Release v1.25.1 (#1832)

* Improve Slack attachments formatting (slack)

* Add TitleLink
* Add Footer

* Fix linter issues

Dockerfile_whatsappmulti

@@ -0,0 +1,14 @@
+FROM alpine AS builder
+
+COPY . /go/src/matterbridge
+RUN apk --no-cache add go git \
+        && cd /go/src/matterbridge \
+        && CGO_ENABLED=0 go build -tags whatsappmulti -mod vendor -ldflags "-X github.com/42wim/matterbridge/version.GitHash=$(git log --pretty=format:'%h' -n 1)" -o /bin/matterbridge
+
+FROM alpine
+RUN apk --no-cache add ca-certificates mailcap
+COPY --from=builder /bin/matterbridge /bin/matterbridge
+RUN mkdir /etc/matterbridge \
+  && touch /etc/matterbridge/matterbridge.toml \
+  && ln -sf /matterbridge.toml /etc/matterbridge/matterbridge.toml
+ENTRYPOINT ["/bin/matterbridge", "-conf", "/etc/matterbridge/matterbridge.toml"]

README.md

@@ -58,21 +58,22 @@ And more...
     - [Binaries](#binaries)
     - [Packages](#packages)
   - [Building](#building)
+  - [Building with whatsapp (beta) multidevice support](#building-with-whatsapp-beta-multidevice-support)
   - [Configuration](#configuration)
     - [Basic configuration](#basic-configuration)
     - [Settings](#settings)
     - [Advanced configuration](#advanced-configuration)
-    - [Examples](#examples)
-      - [Bridge mattermost (off-topic) - irc (#testing)](#bridge-mattermost-off-topic---irc-testing)
-      - [Bridge slack (#general) - discord (general)](#bridge-slack-general---discord-general)
-  - [Running](#running)
-    - [Docker](#docker)
-    - [Systemd](#systemd)
-  - [Changelog](#changelog)
-  - [FAQ](#faq)
-  - [Related projects](#related-projects)
-  - [Articles / Tutorials](#articles--tutorials)
-  - [Thanks](#thanks)
+      - [Examples](#examples)
+        - [Bridge mattermost (off-topic) - irc (#testing)](#bridge-mattermost-off-topic---irc-testing)
+        - [Bridge slack (#general) - discord (general)](#bridge-slack-general---discord-general)
+    - [Running](#running)
+      - [Docker](#docker)
+      - [Systemd](#systemd)
+    - [Changelog](#changelog)
+    - [FAQ](#faq)
+    - [Related projects](#related-projects)
+    - [Articles / Tutorials](#articles--tutorials)
+    - [Thanks](#thanks)
 
 ## Features
 
@@ -89,6 +90,7 @@ And more...
 
 - [Discord](https://discordapp.com)
 - [Gitter](https://gitter.im)
+- [Harmony](https://harmonyapp.io)
 - [IRC](http://www.mirc.com/servers.html)
 - [Keybase](https://keybase.io)
 - [Matrix](https://matrix.org)
@@ -105,6 +107,8 @@ And more...
 - [Twitch](https://twitch.tv)
 - [VK](https://vk.com/)
 - [WhatsApp](https://www.whatsapp.com/)
+  - Whatsapp legacy is natively supported
+  - Whatsapp multidevice beta is natively supported but you need to build yourself, see [here](#building-with-whatsapp-beta-multidevice-support)
 - [XMPP](https://xmpp.org)
 - [Zulip](https://zulipchat.com)
 
@@ -120,6 +124,8 @@ And more...
 - [Counter-Strike, half-life and more](https://forums.alliedmods.net/showthread.php?t=319430)
 - [MatterAMXX](https://github.com/GabeIggy/MatterAMXX)
 - [Vintage Story](https://github.com/NikkyAI/vs-matterbridge)
+- [Ultima Online Emulator](https://github.com/kuoushi/ServUO-Matterbridge)
+- [Teamspeak](https://github.com/Archeb/ts-matterbridge)
 
 ### API
 
@@ -138,6 +144,8 @@ Used by the projects below. Feel free to make a PR to add your project to this l
 - [matterbabble](https://github.com/DeclanHoare/matterbabble) (Discourse support)
 - [MatterAMXX](https://forums.alliedmods.net/showthread.php?t=319430) (Counter-Strike, half-life and more via AMXX mod)
 - [Vintage Story](https://github.com/NikkyAI/vs-matterbridge)
+- [ServUO-matterbridge](https://github.com/kuoushi/ServUO-Matterbridge) (A matterbridge connector for ServUO servers)
+- [ts-matterbridge](https://github.com/Archeb/ts-matterbridge) (Integrate teamspeak chat with matterbridge)
 
 ## Chat with us
 
@@ -164,10 +172,10 @@ See <https://github.com/42wim/matterbridge/wiki>
 
 ### Binaries
 
-- Latest stable release [v1.24.1](https://github.com/42wim/matterbridge/releases/latest)
+- Latest stable release [v1.25.1](https://github.com/42wim/matterbridge/releases/latest)
 - Development releases (follows master) can be downloaded [here](https://github.com/42wim/matterbridge/actions) selecting the latest green build and then artifacts.
 
-To install or upgrade just download the latest [binary](https://github.com/42wim/matterbridge/releases/latest). On \*nix platforms you may need to make the binary executable - you can do this by running `chmod a+x` on the binary (example: `chmod a+x matterbridge-1.20.0-linux-64bit`). After downloading (and making the binary executable, if necessary), follow the instructions on the [howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) for a step by step walkthrough for creating your configuration.
+To install or upgrade just download the latest [binary](https://github.com/42wim/matterbridge/releases/latest). On \*nix platforms you may need to make the binary executable - you can do this by running `chmod a+x` on the binary (example: `chmod a+x matterbridge-1.24.1-linux-64bit`). After downloading (and making the binary executable, if necessary), follow the instructions on the [howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) for a step by step walkthrough for creating your configuration.
 
 ### Packages
 
@@ -182,16 +190,53 @@ Most people just want to use binaries, you can find those [here](https://github.
 If you really want to build from source, follow these instructions:
 Go 1.17+ is required. Make sure you have [Go](https://golang.org/doc/install) properly installed.
 
+Building the binary with **all** the bridges enabled needs about 3GB RAM to compile.
+You can reduce this memory requirement to 0,5GB RAM by adding the `nomsteams` tag if you don't need/use the Microsoft Teams bridge.
+
+Matterbridge can be build without gcc/c-compiler: If you're running on windows first run `set CGO_ENABLED=0` on other platforms you prepend `CGO_ENABLED=0` to the `go build` command. (eg `CGO_ENABLED=0 go install github.com/42wim/matterbridge`)
+
 To install the latest stable run:
 
 ```bash
-go install github.com/42wim/matterbridge@v1.24.1
+go install github.com/42wim/matterbridge
 ```
 
 To install the latest dev run:
 
 ```bash
-go install github.com/42wim/matterbridge@latest
+go install github.com/42wim/matterbridge@master
+```
+
+To install the latest stable run without msteams or zulip bridge:
+
+```bash
+go install -tags nomsteams,nozulip github.com/42wim/matterbridge
+```
+
+You should now have matterbridge binary in the ~/go/bin directory:
+
+```bash
+$ ls ~/go/bin/
+matterbridge
+```
+
+## Building with whatsapp (beta) multidevice support
+
+Because the library we use for Whatsapp multidevice support includes a GPL3 library we can not provide you binaries.
+(as this would require the Matterbridge to change it license to GPL)
+
+Matterbridge can be build without gcc/c-compiler: If you're running on windows first run `set CGO_ENABLED=0` on other platforms you prepend `CGO_ENABLED=0` to the `go build` command. (eg `CGO_ENABLED=0 go install github.com/42wim/matterbridge`)
+
+So this means you have to build it yourself using the instructions below:
+
+```bash
+go install -tags whatsappmulti github.com/42wim/matterbridge@master
+```
+
+If you're low on memory and don't need msteams:
+
+```bash
+go install -tags nomsteams,whatsappmulti github.com/42wim/matterbridge@master
 ```
 
 You should now have matterbridge binary in the ~/go/bin directory:
@@ -323,6 +368,8 @@ See [FAQ](https://github.com/42wim/matterbridge/wiki/FAQ)
 - [nextcloud talk](https://github.com/nextcloud/talk_matterbridge) (Integrates matterbridge in Nextcloud Talk)
 - [mattercraft](https://github.com/raws/mattercraft) (Minecraft bridge)
 - [vs-matterbridge](https://github.com/NikkyAI/vs-matterbridge) (Vintage Story bridge)
+- [ServUO-matterbridge](https://github.com/kuoushi/ServUO-Matterbridge) (A matterbridge connector for ServUO servers)
+- [ts-matterbridge](https://github.com/Archeb/ts-matterbridge) (Integrate teamspeak chat with matterbridge)
 
 ## Articles / Tutorials
 
@@ -356,6 +403,7 @@ Matterbridge wouldn't exist without these libraries:
 - gops - <https://github.com/google/gops>
 - gozulipbot - <https://github.com/ifo/gozulipbot>
 - gumble - <https://github.com/layeh/gumble>
+- harmony - <https://github.com/harmony-development/shibshib>
 - irc - <https://github.com/lrstanley/girc>
 - keybase - <https://github.com/keybase/go-keybase-chat-bot>
 - matrix - <https://github.com/matrix-org/gomatrix>
@@ -363,6 +411,7 @@ Matterbridge wouldn't exist without these libraries:
 - msgraph.go - <https://github.com/yaegashi/msgraph.go>
 - mumble - <https://github.com/layeh/gumble>
 - nctalk - <https://github.com/gary-kim/go-nc-talk>
+- rocketchat - <https://github.com/RocketChat/Rocket.Chat.Go.SDK>
 - slack - <https://github.com/nlopes/slack>
 - sshchat - <https://github.com/shazow/ssh-chat>
 - steam - <https://github.com/Philipp15b/go-steam>
@@ -370,6 +419,7 @@ Matterbridge wouldn't exist without these libraries:
 - tengo - <https://github.com/d5/tengo>
 - vk - <https://github.com/SevereCloud/vksdk>
 - whatsapp - <https://github.com/Rhymen/go-whatsapp>
+- whatsapp - <https://github.com/tulir/whatsmeow>
 - xmpp - <https://github.com/mattn/go-xmpp>
 - zulip - <https://github.com/ifo/gozulipbot>
 

bridge/discord/discord.go

@@ -272,7 +272,6 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
 	// Handle prefix hint for unthreaded messages.
 	if msg.ParentNotFound() {
 		msg.ParentID = ""
-		msg.Text = fmt.Sprintf("[thread]: %s", msg.Text)
 	}
 
 	// Use webhook to send the message

bridge/matrix/helpers.go

@@ -8,7 +8,7 @@ import (
 	"strings"
 	"time"
 
-	matrix "github.com/matrix-org/gomatrix"
+	matrix "github.com/matterbridge/gomatrix"
 )
 
 func newMatrixUsername(username string) *matrixUsername {

bridge/matrix/matrix.go

@@ -12,7 +12,7 @@ import (
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/bridge/helper"
-	matrix "github.com/matrix-org/gomatrix"
+	matrix "github.com/matterbridge/gomatrix"
 )
 
 var (
@@ -428,12 +428,15 @@ func (b *Bmatrix) handleReply(ev *matrix.Event, rmsg config.Message) bool {
 	}
 
 	body := rmsg.Text
-	for strings.HasPrefix(body, "> ") {
-		lineIdx := strings.IndexRune(body, '\n')
-		if lineIdx == -1 {
-			body = ""
-		} else {
-			body = body[(lineIdx + 1):]
+
+	if !b.GetBool("keepquotedreply") {
+		for strings.HasPrefix(body, "> ") {
+			lineIdx := strings.IndexRune(body, '\n')
+			if lineIdx == -1 {
+				body = ""
+			} else {
+				body = body[(lineIdx + 1):]
+			}
 		}
 	}
 

bridge/mattermost/helpers.go

@@ -183,6 +183,7 @@ func (b *Bmattermost) sendWebhook(msg config.Message) (string, error) {
 	if b.GetBool("PrefixMessagesWithNick") {
 		msg.Text = msg.Username + msg.Text
 	}
+
 	if msg.Extra != nil {
 		// this sends a message only if we received a config.EVENT_FILE_FAILURE_SIZE
 		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
@@ -206,7 +207,7 @@ func (b *Bmattermost) sendWebhook(msg config.Message) (string, error) {
 			for _, f := range msg.Extra["file"] {
 				fi := f.(config.FileInfo)
 				if fi.URL != "" {
-					msg.Text += fi.URL
+					msg.Text += " " + fi.URL
 				}
 			}
 		}

bridge/slack/handlers.go

@@ -282,6 +282,13 @@ func (b *Bslack) handleStatusEvent(ev *slack.MessageEvent, rmsg *config.Message)
 	return false
 }
 
+func getMessageTitle(attach *slack.Attachment) string {
+	if attach.TitleLink != "" {
+		return fmt.Sprintf("[%s](%s)\n", attach.Title, attach.TitleLink)
+	}
+	return attach.Title
+}
+
 func (b *Bslack) handleAttachments(ev *slack.MessageEvent, rmsg *config.Message) {
 	// File comments are set by the system (because there is no username given).
 	if ev.SubType == sFileComment {
@@ -290,12 +297,15 @@ func (b *Bslack) handleAttachments(ev *slack.MessageEvent, rmsg *config.Message)
 
 	// See if we have some text in the attachments.
 	if rmsg.Text == "" {
-		for _, attach := range ev.Attachments {
+		for i, attach := range ev.Attachments {
 			if attach.Text != "" {
 				if attach.Title != "" {
-					rmsg.Text = attach.Title + "\n"
+					rmsg.Text = getMessageTitle(&ev.Attachments[i])
 				}
 				rmsg.Text += attach.Text
+				if attach.Footer != "" {
+					rmsg.Text += "\n\n" + attach.Footer
+				}
 			} else {
 				rmsg.Text = attach.Fallback
 			}

bridge/slack/helpers.go

@@ -87,6 +87,9 @@ func (b *Bslack) populateMessageWithUserInfo(ev *slack.MessageEvent, rmsg *confi
 	if user.Profile.DisplayName != "" {
 		rmsg.Username = user.Profile.DisplayName
 	}
+	if b.GetBool("UseFullName") && user.Profile.RealName != "" {
+		rmsg.Username = user.Profile.RealName
+	}
 	return nil
 }
 
@@ -124,7 +127,7 @@ var (
 	mentionRE        = regexp.MustCompile(`<@([a-zA-Z0-9]+)>`)
 	channelRE        = regexp.MustCompile(`<#[a-zA-Z0-9]+\|(.+?)>`)
 	variableRE       = regexp.MustCompile(`<!((?:subteam\^)?[a-zA-Z0-9]+)(?:\|@?(.+?))?>`)
-	urlRE            = regexp.MustCompile(`<(.*?)(\|.*?)?>`)
+	urlRE            = regexp.MustCompile(`<([^<\|]+)\|([^>]+)>`)
 	codeFenceRE      = regexp.MustCompile(`(?m)^` + "```" + `\w+$`)
 	topicOrPurposeRE = regexp.MustCompile(`(?s)(@.+) (cleared|set)(?: the)? channel (topic|purpose)(?:: (.*))?`)
 )
@@ -178,14 +181,7 @@ func (b *Bslack) replaceVariable(text string) string {
 
 // @see https://api.slack.com/docs/message-formatting#linking_to_urls
 func (b *Bslack) replaceURL(text string) string {
-	for _, r := range urlRE.FindAllStringSubmatch(text, -1) {
-		if len(strings.TrimSpace(r[2])) == 1 { // A display text separator was found, but the text was blank
-			text = strings.Replace(text, r[0], "", 1)
-		} else {
-			text = strings.Replace(text, r[0], r[1], 1)
-		}
-	}
-	return text
+	return urlRE.ReplaceAllString(text, "[${2}](${1})")
 }
 
 func (b *Bslack) replaceb0rkedMarkDown(text string) string {

bridge/slack/slack.go

@@ -321,7 +321,7 @@ func (b *Bslack) sendRTM(msg config.Message) (string, error) {
 	}
 
 	// Upload a file if it exists.
-	if msg.Extra != nil {
+	if len(msg.Extra) > 0 {
 		extraMsgs := helper.HandleExtra(&msg, b.General)
 		for i := range extraMsgs {
 			rmsg := &extraMsgs[i]
@@ -332,7 +332,7 @@ func (b *Bslack) sendRTM(msg config.Message) (string, error) {
 			}
 		}
 		// Upload files if necessary (from Slack, Telegram or Mattermost).
-		b.uploadFile(&msg, channelInfo.ID)
+		return b.uploadFile(&msg, channelInfo.ID)
 	}
 
 	// Post message.
@@ -443,7 +443,8 @@ func (b *Bslack) postMessage(msg *config.Message, channelInfo *slack.Channel) (s
 }
 
 // uploadFile handles native upload of files
-func (b *Bslack) uploadFile(msg *config.Message, channelID string) {
+func (b *Bslack) uploadFile(msg *config.Message, channelID string) (string, error) {
+	var messageID string
 	for _, f := range msg.Extra["file"] {
 		fi, ok := f.(config.FileInfo)
 		if !ok {
@@ -471,13 +472,22 @@ func (b *Bslack) uploadFile(msg *config.Message, channelID string) {
 		})
 		if err != nil {
 			b.Log.Errorf("uploadfile %#v", err)
-			return
+			return "", err
 		}
 		if res.ID != "" {
 			b.Log.Debugf("Adding file ID %s to cache with timestamp %s", res.ID, ts.String())
 			b.cache.Add("file"+res.ID, ts)
+
+			// search for message id by uploaded file in private/public channels, get thread timestamp from uploaded file
+			if v, ok := res.Shares.Private[channelID]; ok && len(v) > 0 {
+				messageID = v[0].Ts
+			}
+			if v, ok := res.Shares.Public[channelID]; ok && len(v) > 0 {
+				messageID = v[0].Ts
+			}
 		}
 	}
+	return messageID, nil
 }
 
 func (b *Bslack) prepareMessageOptions(msg *config.Message) []slack.MsgOption {

bridge/telegram/handlers.go

@@ -71,6 +71,9 @@ func (b *Btelegram) handleForwarded(rmsg *config.Message, message *tgbotapi.Mess
 	if b.GetBool("UseFirstName") {
 		usernameForward = message.ForwardFrom.FirstName
 	}
+	if b.GetBool("UseFullName") {
+		usernameForward = message.ForwardFrom.FirstName + " " + message.ForwardFrom.LastName
+	}
 
 	if usernameForward == "" {
 		usernameForward = message.ForwardFrom.UserName
@@ -94,6 +97,9 @@ func (b *Btelegram) handleQuoting(rmsg *config.Message, message *tgbotapi.Messag
 			if b.GetBool("UseFirstName") {
 				usernameReply = message.ReplyToMessage.From.FirstName
 			}
+			if b.GetBool("UseFullName") {
+				usernameReply = message.ReplyToMessage.From.FirstName + " " + message.ReplyToMessage.From.LastName
+			}
 			if usernameReply == "" {
 				usernameReply = message.ReplyToMessage.From.UserName
 				if usernameReply == "" {
@@ -105,7 +111,11 @@ func (b *Btelegram) handleQuoting(rmsg *config.Message, message *tgbotapi.Messag
 			usernameReply = unknownUser
 		}
 		if !b.GetBool("QuoteDisable") {
-			rmsg.Text = b.handleQuote(rmsg.Text, usernameReply, message.ReplyToMessage.Text)
+			quote := message.ReplyToMessage.Text
+			if quote == "" {
+				quote = message.ReplyToMessage.Caption
+			}
+			rmsg.Text = b.handleQuote(rmsg.Text, usernameReply, quote)
 		}
 	}
 }
@@ -117,6 +127,9 @@ func (b *Btelegram) handleUsername(rmsg *config.Message, message *tgbotapi.Messa
 		if b.GetBool("UseFirstName") {
 			rmsg.Username = message.From.FirstName
 		}
+		if b.GetBool("UseFullName") {
+			rmsg.Username = message.From.FirstName + " " + message.From.LastName
+		}
 		if rmsg.Username == "" {
 			rmsg.Username = message.From.UserName
 			if rmsg.Username == "" {
@@ -134,6 +147,9 @@ func (b *Btelegram) handleUsername(rmsg *config.Message, message *tgbotapi.Messa
 		if b.GetBool("UseFirstName") {
 			rmsg.Username = message.SenderChat.FirstName
 		}
+		if b.GetBool("UseFullName") {
+			rmsg.Username = message.SenderChat.FirstName + " " + message.SenderChat.LastName
+		}
 
 		if rmsg.Username == "" || rmsg.Username == "Channel_Bot" {
 			rmsg.Username = message.SenderChat.UserName
@@ -187,6 +203,11 @@ func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
 		rmsg.ID = strconv.Itoa(message.MessageID)
 		rmsg.Channel = strconv.FormatInt(message.Chat.ID, 10)
 
+		// preserve threading from telegram reply
+		if message.ReplyToMessage != nil {
+			rmsg.ParentID = strconv.Itoa(message.ReplyToMessage.MessageID)
+		}
+
 		// handle entities (adding URLs)
 		b.handleEntities(&rmsg, message)
 
@@ -364,7 +385,7 @@ func (b *Btelegram) getDownloadInfo(id string, suffix string, urlpart bool) (str
 		urlPart := strings.Split(url, "/")
 		name = urlPart[len(urlPart)-1]
 	}
-	if suffix != "" && !strings.HasSuffix(name, suffix) {
+	if suffix != "" && !strings.HasSuffix(name, suffix) && !strings.HasSuffix(name, ".webm") {
 		name += suffix
 	}
 	text := " " + url
@@ -383,7 +404,7 @@ func (b *Btelegram) handleDelete(msg *config.Message, chatid int64) (string, err
 	}
 
 	cfg := tgbotapi.NewDeleteMessage(chatid, msgid)
-	_, err = b.c.Send(cfg)
+	_, err = b.c.Request(cfg)
 
 	return "", err
 }
@@ -422,8 +443,8 @@ func (b *Btelegram) handleEdit(msg *config.Message, chatid int64) (string, error
 }
 
 // handleUploadFile handles native upload of files
-func (b *Btelegram) handleUploadFile(msg *config.Message, chatid int64) string {
-	var c tgbotapi.Chattable
+func (b *Btelegram) handleUploadFile(msg *config.Message, chatid int64, parentID int) (string, error) {
+	var media []interface{}
 	for _, f := range msg.Extra["file"] {
 		fi := f.(config.FileInfo)
 		file := tgbotapi.FileBytes{
@@ -432,32 +453,42 @@ func (b *Btelegram) handleUploadFile(msg *config.Message, chatid int64) string {
 		}
 		switch filepath.Ext(fi.Name) {
 		case ".jpg", ".jpe", ".png":
-			pc := tgbotapi.NewPhoto(chatid, file)
-			pc.Caption, pc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
-			c = pc
+			pc := tgbotapi.NewInputMediaPhoto(file)
+			if fi.Comment != "" {
+				pc.Caption, pc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
+			}
+			media = append(media, pc)
 		case ".mp4", ".m4v":
-			vc := tgbotapi.NewVideo(chatid, file)
-			vc.Caption, vc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
-			c = vc
+			vc := tgbotapi.NewInputMediaVideo(file)
+			if fi.Comment != "" {
+				vc.Caption, vc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
+			}
+			media = append(media, vc)
 		case ".mp3", ".oga":
-			ac := tgbotapi.NewAudio(chatid, file)
-			ac.Caption, ac.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
-			c = ac
+			ac := tgbotapi.NewInputMediaAudio(file)
+			if fi.Comment != "" {
+				ac.Caption, ac.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
+			}
+			media = append(media, ac)
 		case ".ogg":
 			voc := tgbotapi.NewVoice(chatid, file)
 			voc.Caption, voc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
-			c = voc
+			voc.ReplyToMessageID = parentID
+			res, err := b.c.Send(voc)
+			if err != nil {
+				return "", err
+			}
+			return strconv.Itoa(res.MessageID), nil
 		default:
-			dc := tgbotapi.NewDocument(chatid, file)
-			dc.Caption, dc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
-			c = dc
-		}
-		_, err := b.c.Send(c)
-		if err != nil {
-			b.Log.Errorf("file upload failed: %#v", err)
+			dc := tgbotapi.NewInputMediaDocument(file)
+			if fi.Comment != "" {
+				dc.Caption, dc.ParseMode = TGGetParseMode(b, msg.Username, fi.Comment)
+			}
+			media = append(media, dc)
 		}
 	}
-	return ""
+
+	return b.sendMediaFiles(msg, chatid, parentID, media)
 }
 
 func (b *Btelegram) handleQuote(message, quoteNick, quoteMessage string) string {
@@ -486,8 +517,8 @@ func (b *Btelegram) handleEntities(rmsg *config.Message, message *tgbotapi.Messa
 	}
 
 	indexMovedBy := 0
+	prevLinkOffset := -1
 
-	// for now only do URL replacements
 	for _, e := range message.Entities {
 
 		asRunes := utf16.Encode([]rune(rmsg.Text))
@@ -506,6 +537,11 @@ func (b *Btelegram) handleEntities(rmsg *config.Message, message *tgbotapi.Messa
 			}
 			rmsg.Text = string(utf16.Decode(asRunes[:offset+e.Length])) + " (" + url.String() + ")" + string(utf16.Decode(asRunes[offset+e.Length:]))
 			indexMovedBy += len(url.String()) + 3
+			prevLinkOffset = e.Offset
+		}
+
+		if e.Offset == prevLinkOffset {
+			continue
 		}
 
 		if e.Type == "code" {

bridge/telegram/telegram.go

@@ -1,6 +1,7 @@
 package btelegram
 
 import (
+	"fmt"
 	"html"
 	"log"
 	"strconv"
@@ -108,16 +109,27 @@ func (b *Btelegram) Send(msg config.Message) (string, error) {
 		return b.handleDelete(&msg, chatid)
 	}
 
+	// Handle prefix hint for unthreaded messages.
+	if msg.ParentNotFound() {
+		msg.ParentID = ""
+		msg.Text = fmt.Sprintf("[reply]: %s", msg.Text)
+	}
+
+	var parentID int
+	if msg.ParentID != "" {
+		parentID, _ = b.intParentID(msg.ParentID)
+	}
+
 	// Upload a file if it exists
 	if msg.Extra != nil {
 		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
-			if _, msgErr := b.sendMessage(chatid, rmsg.Username, rmsg.Text); msgErr != nil {
+			if _, msgErr := b.sendMessage(chatid, rmsg.Username, rmsg.Text, parentID); msgErr != nil {
 				b.Log.Errorf("sendMessage failed: %s", msgErr)
 			}
 		}
 		// check if we have files to upload (from slack, telegram or mattermost)
 		if len(msg.Extra["file"]) > 0 {
-			b.handleUploadFile(&msg, chatid)
+			return b.handleUploadFile(&msg, chatid, parentID)
 		}
 	}
 
@@ -131,7 +143,7 @@ func (b *Btelegram) Send(msg config.Message) (string, error) {
 	// Ignore empty text field needs for prevent double messages from whatsapp to telegram
 	// when sending media with text caption
 	if msg.Text != "" {
-		return b.sendMessage(chatid, msg.Username, msg.Text)
+		return b.sendMessage(chatid, msg.Username, msg.Text, parentID)
 	}
 
 	return "", nil
@@ -145,10 +157,10 @@ func (b *Btelegram) getFileDirectURL(id string) string {
 	return res
 }
 
-func (b *Btelegram) sendMessage(chatid int64, username, text string) (string, error) {
+func (b *Btelegram) sendMessage(chatid int64, username, text string, parentID int) (string, error) {
 	m := tgbotapi.NewMessage(chatid, "")
 	m.Text, m.ParseMode = TGGetParseMode(b, username, text)
-
+	m.ReplyToMessageID = parentID
 	m.DisableWebPagePreview = b.GetBool("DisableWebPagePreview")
 
 	res, err := b.c.Send(m)
@@ -158,6 +170,29 @@ func (b *Btelegram) sendMessage(chatid int64, username, text string) (string, er
 	return strconv.Itoa(res.MessageID), nil
 }
 
+// sendMediaFiles native upload media files via media group
+func (b *Btelegram) sendMediaFiles(msg *config.Message, chatid int64, parentID int, media []interface{}) (string, error) {
+	if len(media) == 0 {
+		return "", nil
+	}
+	mg := tgbotapi.MediaGroupConfig{ChatID: chatid, ChannelUsername: msg.Username, Media: media, ReplyToMessageID: parentID}
+	messages, err := b.c.SendMediaGroup(mg)
+	if err != nil {
+		return "", err
+	}
+	// return first message id
+	return strconv.Itoa(messages[0].MessageID), nil
+}
+
+// intParentID return integer parent id for telegram message
+func (b *Btelegram) intParentID(parentID string) (int, error) {
+	pid, err := strconv.Atoi(parentID)
+	if err != nil {
+		return 0, err
+	}
+	return pid, nil
+}
+
 func (b *Btelegram) cacheAvatar(msg *config.Message) (string, error) {
 	fi := msg.Extra["file"][0].(config.FileInfo)
 	/* if we have a sha we have successfully uploaded the file to the media server,

bridge/vk/vk.go

@@ -64,7 +64,7 @@ func (b *Bvk) Connect() error {
 	go func() {
 		err := b.lp.Run()
 		if err != nil {
-			b.Log.Fatal("Enable longpoll in group management")
+			b.Log.WithError(err).Fatal("Enable longpoll in group management")
 		}
 	}()
 
@@ -223,7 +223,7 @@ func (b *Bvk) uploadFiles(extra map[string][]interface{}, peerID int) (string, s
 		}
 		a, err := b.uploadFile(fi, peerID)
 		if err != nil {
-			b.Log.Error("File upload error ", fi.Name)
+			b.Log.WithError(err).Error("File upload error ", fi.Name)
 		}
 
 		attachments = append(attachments, a)
@@ -237,7 +237,8 @@ func (b *Bvk) uploadFile(file config.FileInfo, peerID int) (string, error) {
 
 	photoRE := regexp.MustCompile(".(jpg|jpe|png)$")
 	if photoRE.MatchString(file.Name) {
-		p, err := b.c.UploadMessagesPhoto(peerID, r)
+		// BUG(VK): for community chat peerID=0
+		p, err := b.c.UploadMessagesPhoto(0, r)
 		if err != nil {
 			return "", err
 		}

bridge/whatsapp/handlers.go

@@ -1,3 +1,4 @@
+// nolint:goconst
 package bwhatsapp
 
 import (
@@ -134,6 +135,7 @@ func (b *Bwhatsapp) HandleTextMessage(message whatsapp.TextMessage) {
 }
 
 // HandleImageMessage sent from WhatsApp, relay it to the brige
+// nolint:funlen
 func (b *Bwhatsapp) HandleImageMessage(message whatsapp.ImageMessage) {
 	if message.Info.FromMe || message.Info.Timestamp < b.startedAt {
 		return

bridge/whatsapp/helpers.go

@@ -111,8 +111,7 @@ func (b *Bwhatsapp) getSenderName(senderJid string) string {
 	}
 
 	// try to reload this contact
-	_, err := b.conn.Contacts()
-	if err != nil {
+	if _, err := b.conn.Contacts(); err != nil {
 		b.Log.Errorf("error on update of contacts: %v", err)
 	}
 

bridge/whatsapp/whatsapp.go

@@ -40,6 +40,11 @@ type Bwhatsapp struct {
 func New(cfg *bridge.Config) bridge.Bridger {
 	number := cfg.GetString(cfgNumber)
 
+	cfg.Log.Warn("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
+	cfg.Log.Warn("This bridge is deprecated and not supported anymore. Use the new multidevice whatsapp bridge")
+	cfg.Log.Warn("See https://github.com/42wim/matterbridge#building-with-whatsapp-beta-multidevice-support for more info")
+	cfg.Log.Warn("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
+
 	if number == "" {
 		cfg.Log.Fatalf("Missing configuration for WhatsApp bridge: Number")
 	}

bridge/whatsappmulti/handlers.go

@@ -0,0 +1,344 @@
+// +build whatsappmulti
+
+package bwhatsapp
+
+import (
+	"fmt"
+	"mime"
+	"strings"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+
+	"go.mau.fi/whatsmeow/binary/proto"
+	"go.mau.fi/whatsmeow/types"
+	"go.mau.fi/whatsmeow/types/events"
+)
+
+// nolint:gocritic
+func (b *Bwhatsapp) eventHandler(evt interface{}) {
+	switch e := evt.(type) {
+	case *events.Message:
+		b.handleMessage(e)
+	}
+}
+
+func (b *Bwhatsapp) handleMessage(message *events.Message) {
+	msg := message.Message
+	switch {
+	case msg == nil, message.Info.IsFromMe, message.Info.Timestamp.Before(b.startedAt):
+		return
+	}
+
+	b.Log.Infof("Receiving message %#v", msg)
+
+	switch {
+	case msg.Conversation != nil || msg.ExtendedTextMessage != nil:
+		b.handleTextMessage(message.Info, msg)
+	case msg.VideoMessage != nil:
+		b.handleVideoMessage(message)
+	case msg.AudioMessage != nil:
+		b.handleAudioMessage(message)
+	case msg.DocumentMessage != nil:
+		b.handleDocumentMessage(message)
+	case msg.ImageMessage != nil:
+		b.handleImageMessage(message)
+	}
+}
+
+// nolint:funlen
+func (b *Bwhatsapp) handleTextMessage(messageInfo types.MessageInfo, msg *proto.Message) {
+	senderJID := messageInfo.Sender
+	channel := messageInfo.Chat
+
+	senderName := b.getSenderName(messageInfo.Sender)
+	if senderName == "" {
+		senderName = "Someone" // don't expose telephone number
+	}
+
+	if msg.GetExtendedTextMessage() == nil && msg.GetConversation() == "" {
+		b.Log.Debugf("message without text content? %#v", msg)
+		return
+	}
+
+	var text string
+
+	// nolint:nestif
+	if msg.GetExtendedTextMessage() == nil {
+		text = msg.GetConversation()
+	} else {
+		text = msg.GetExtendedTextMessage().GetText()
+		ci := msg.GetExtendedTextMessage().GetContextInfo()
+
+		if senderJID == (types.JID{}) && ci.Participant != nil {
+			senderJID = types.NewJID(ci.GetParticipant(), types.DefaultUserServer)
+		}
+
+		if ci.MentionedJid != nil {
+			// handle user mentions
+			for _, mentionedJID := range ci.MentionedJid {
+				numberAndSuffix := strings.SplitN(mentionedJID, "@", 2)
+
+				// mentions comes as telephone numbers and we don't want to expose it to other bridges
+				// replace it with something more meaninful to others
+				mention := b.getSenderNotify(types.NewJID(numberAndSuffix[0], types.DefaultUserServer))
+				if mention == "" {
+					mention = "someone"
+				}
+
+				text = strings.Replace(text, "@"+numberAndSuffix[0], "@"+mention, 1)
+			}
+		}
+	}
+
+	rmsg := config.Message{
+		UserID:   senderJID.String(),
+		Username: senderName,
+		Text:     text,
+		Channel:  channel.String(),
+		Account:  b.Account,
+		Protocol: b.Protocol,
+		Extra:    make(map[string][]interface{}),
+		//      ParentID: TODO, // TODO handle thread replies  // map from Info.QuotedMessageID string
+		ID: messageInfo.ID,
+	}
+
+	if avatarURL, exists := b.userAvatars[senderJID.String()]; exists {
+		rmsg.Avatar = avatarURL
+	}
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", senderJID, b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+
+	b.Remote <- rmsg
+}
+
+// HandleImageMessage sent from WhatsApp, relay it to the brige
+func (b *Bwhatsapp) handleImageMessage(msg *events.Message) {
+	imsg := msg.Message.GetImageMessage()
+
+	senderJID := msg.Info.Sender
+	senderName := b.getSenderName(senderJID)
+	ci := imsg.GetContextInfo()
+
+	if senderJID == (types.JID{}) && ci.Participant != nil {
+		senderJID = types.NewJID(ci.GetParticipant(), types.DefaultUserServer)
+	}
+
+	rmsg := config.Message{
+		UserID:   senderJID.String(),
+		Username: senderName,
+		Channel:  msg.Info.Chat.String(),
+		Account:  b.Account,
+		Protocol: b.Protocol,
+		Extra:    make(map[string][]interface{}),
+		ID:       msg.Info.ID,
+	}
+
+	if avatarURL, exists := b.userAvatars[senderJID.String()]; exists {
+		rmsg.Avatar = avatarURL
+	}
+
+	fileExt, err := mime.ExtensionsByType(imsg.GetMimetype())
+	if err != nil {
+		b.Log.Errorf("Mimetype detection error: %s", err)
+
+		return
+	}
+
+	// rename .jfif to .jpg https://github.com/42wim/matterbridge/issues/1292
+	if fileExt[0] == ".jfif" {
+		fileExt[0] = ".jpg"
+	}
+
+	// rename .jpe to .jpg https://github.com/42wim/matterbridge/issues/1463
+	if fileExt[0] == ".jpe" {
+		fileExt[0] = ".jpg"
+	}
+
+	filename := fmt.Sprintf("%v%v", msg.Info.ID, fileExt[0])
+
+	b.Log.Debugf("Trying to download %s with type %s", filename, imsg.GetMimetype())
+
+	data, err := b.wc.Download(imsg)
+	if err != nil {
+		b.Log.Errorf("Download image failed: %s", err)
+
+		return
+	}
+
+	// Move file to bridge storage
+	helper.HandleDownloadData(b.Log, &rmsg, filename, imsg.GetCaption(), "", &data, b.General)
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", senderJID, b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+
+	b.Remote <- rmsg
+}
+
+// HandleVideoMessage downloads video messages
+func (b *Bwhatsapp) handleVideoMessage(msg *events.Message) {
+	imsg := msg.Message.GetVideoMessage()
+
+	senderJID := msg.Info.Sender
+	senderName := b.getSenderName(senderJID)
+	ci := imsg.GetContextInfo()
+
+	if senderJID == (types.JID{}) && ci.Participant != nil {
+		senderJID = types.NewJID(ci.GetParticipant(), types.DefaultUserServer)
+	}
+
+	rmsg := config.Message{
+		UserID:   senderJID.String(),
+		Username: senderName,
+		Channel:  msg.Info.Chat.String(),
+		Account:  b.Account,
+		Protocol: b.Protocol,
+		Extra:    make(map[string][]interface{}),
+		ID:       msg.Info.ID,
+	}
+
+	if avatarURL, exists := b.userAvatars[senderJID.String()]; exists {
+		rmsg.Avatar = avatarURL
+	}
+
+	fileExt, err := mime.ExtensionsByType(imsg.GetMimetype())
+	if err != nil {
+		b.Log.Errorf("Mimetype detection error: %s", err)
+
+		return
+	}
+
+	if len(fileExt) == 0 {
+		fileExt = append(fileExt, ".mp4")
+	}
+
+	filename := fmt.Sprintf("%v%v", msg.Info.ID, fileExt[0])
+
+	b.Log.Debugf("Trying to download %s with size %#v and type %s", filename, imsg.GetFileLength(), imsg.GetMimetype())
+
+	data, err := b.wc.Download(imsg)
+	if err != nil {
+		b.Log.Errorf("Download video failed: %s", err)
+
+		return
+	}
+
+	// Move file to bridge storage
+	helper.HandleDownloadData(b.Log, &rmsg, filename, imsg.GetCaption(), "", &data, b.General)
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", senderJID, b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+
+	b.Remote <- rmsg
+}
+
+// HandleAudioMessage downloads audio messages
+func (b *Bwhatsapp) handleAudioMessage(msg *events.Message) {
+	imsg := msg.Message.GetAudioMessage()
+
+	senderJID := msg.Info.Sender
+	senderName := b.getSenderName(senderJID)
+	ci := imsg.GetContextInfo()
+
+	if senderJID == (types.JID{}) && ci.Participant != nil {
+		senderJID = types.NewJID(ci.GetParticipant(), types.DefaultUserServer)
+	}
+
+	rmsg := config.Message{
+		UserID:   senderJID.String(),
+		Username: senderName,
+		Channel:  msg.Info.Chat.String(),
+		Account:  b.Account,
+		Protocol: b.Protocol,
+		Extra:    make(map[string][]interface{}),
+		ID:       msg.Info.ID,
+	}
+
+	if avatarURL, exists := b.userAvatars[senderJID.String()]; exists {
+		rmsg.Avatar = avatarURL
+	}
+
+	fileExt, err := mime.ExtensionsByType(imsg.GetMimetype())
+	if err != nil {
+		b.Log.Errorf("Mimetype detection error: %s", err)
+
+		return
+	}
+
+	if len(fileExt) == 0 {
+		fileExt = append(fileExt, ".ogg")
+	}
+
+	filename := fmt.Sprintf("%v%v", msg.Info.ID, fileExt[0])
+
+	b.Log.Debugf("Trying to download %s with size %#v and type %s", filename, imsg.GetFileLength(), imsg.GetMimetype())
+
+	data, err := b.wc.Download(imsg)
+	if err != nil {
+		b.Log.Errorf("Download video failed: %s", err)
+
+		return
+	}
+
+	// Move file to bridge storage
+	helper.HandleDownloadData(b.Log, &rmsg, filename, "audio message", "", &data, b.General)
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", senderJID, b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+
+	b.Remote <- rmsg
+}
+
+// HandleDocumentMessage downloads documents
+func (b *Bwhatsapp) handleDocumentMessage(msg *events.Message) {
+	imsg := msg.Message.GetDocumentMessage()
+
+	senderJID := msg.Info.Sender
+	senderName := b.getSenderName(senderJID)
+	ci := imsg.GetContextInfo()
+
+	if senderJID == (types.JID{}) && ci.Participant != nil {
+		senderJID = types.NewJID(ci.GetParticipant(), types.DefaultUserServer)
+	}
+
+	rmsg := config.Message{
+		UserID:   senderJID.String(),
+		Username: senderName,
+		Channel:  msg.Info.Chat.String(),
+		Account:  b.Account,
+		Protocol: b.Protocol,
+		Extra:    make(map[string][]interface{}),
+		ID:       msg.Info.ID,
+	}
+
+	if avatarURL, exists := b.userAvatars[senderJID.String()]; exists {
+		rmsg.Avatar = avatarURL
+	}
+
+	fileExt, err := mime.ExtensionsByType(imsg.GetMimetype())
+	if err != nil {
+		b.Log.Errorf("Mimetype detection error: %s", err)
+
+		return
+	}
+
+	filename := fmt.Sprintf("%v", imsg.GetFileName())
+
+	b.Log.Debugf("Trying to download %s with extension %s and type %s", filename, fileExt, imsg.GetMimetype())
+
+	data, err := b.wc.Download(imsg)
+	if err != nil {
+		b.Log.Errorf("Download document message failed: %s", err)
+
+		return
+	}
+
+	// Move file to bridge storage
+	helper.HandleDownloadData(b.Log, &rmsg, filename, "document", "", &data, b.General)
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", senderJID, b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+
+	b.Remote <- rmsg
+}

bridge/whatsappmulti/helpers.go

@@ -0,0 +1,108 @@
+// +build whatsappmulti
+
+package bwhatsapp
+
+import (
+	"fmt"
+	"strings"
+
+	"go.mau.fi/whatsmeow/store"
+	"go.mau.fi/whatsmeow/store/sqlstore"
+	"go.mau.fi/whatsmeow/types"
+)
+
+type ProfilePicInfo struct {
+	URL    string `json:"eurl"`
+	Tag    string `json:"tag"`
+	Status int16  `json:"status"`
+}
+
+func (b *Bwhatsapp) getSenderName(senderJid types.JID) string {
+	if sender, exists := b.contacts[senderJid]; exists {
+		if sender.FullName != "" {
+			return sender.FullName
+		}
+		// if user is not in phone contacts
+		// it is the most obvious scenario unless you sync your phone contacts with some remote updated source
+		// users can change it in their WhatsApp settings -> profile -> click on Avatar
+		if sender.PushName != "" {
+			return sender.PushName
+		}
+
+		if sender.FirstName != "" {
+			return sender.FirstName
+		}
+	}
+
+	// try to reload this contact
+	if _, err := b.wc.Store.Contacts.GetAllContacts(); err != nil {
+		b.Log.Errorf("error on update of contacts: %v", err)
+	}
+
+	allcontacts, err := b.wc.Store.Contacts.GetAllContacts()
+	if err != nil {
+		b.Log.Errorf("error on update of contacts: %v", err)
+	}
+
+	if len(allcontacts) > 0 {
+		b.contacts = allcontacts
+	}
+
+	if sender, exists := b.contacts[senderJid]; exists {
+		if sender.FullName != "" {
+			return sender.FullName
+		}
+		// if user is not in phone contacts
+		// it is the most obvious scenario unless you sync your phone contacts with some remote updated source
+		// users can change it in their WhatsApp settings -> profile -> click on Avatar
+		if sender.PushName != "" {
+			return sender.PushName
+		}
+
+		if sender.FirstName != "" {
+			return sender.FirstName
+		}
+	}
+
+	return "Someone"
+}
+
+func (b *Bwhatsapp) getSenderNotify(senderJid types.JID) string {
+	if sender, exists := b.contacts[senderJid]; exists {
+		return sender.PushName
+	}
+
+	return ""
+}
+
+func (b *Bwhatsapp) GetProfilePicThumb(jid string) (*types.ProfilePictureInfo, error) {
+	pjid, _ := types.ParseJID(jid)
+	info, err := b.wc.GetProfilePictureInfo(pjid, true)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get avatar: %v", err)
+	}
+
+	return info, nil
+}
+
+func isGroupJid(identifier string) bool {
+	return strings.HasSuffix(identifier, "@g.us") ||
+		strings.HasSuffix(identifier, "@temp") ||
+		strings.HasSuffix(identifier, "@broadcast")
+}
+
+func (b *Bwhatsapp) getDevice() (*store.Device, error) {
+	device := &store.Device{}
+
+	storeContainer, err := sqlstore.New("sqlite", "file:"+b.Config.GetString("sessionfile")+".db?_foreign_keys=on&_pragma=busy_timeout=10000", nil)
+	if err != nil {
+		return device, fmt.Errorf("failed to connect to database: %v", err)
+	}
+
+	device, err = storeContainer.GetFirstDevice()
+	if err != nil {
+		return device, fmt.Errorf("failed to get device: %v", err)
+	}
+
+	return device, nil
+}

bridge/whatsappmulti/whatsapp.go

@@ -0,0 +1,333 @@
+// +build whatsappmulti
+
+package bwhatsapp
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"mime"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/mdp/qrterminal"
+
+	"go.mau.fi/whatsmeow"
+	"go.mau.fi/whatsmeow/binary/proto"
+	"go.mau.fi/whatsmeow/types"
+	waLog "go.mau.fi/whatsmeow/util/log"
+
+	goproto "google.golang.org/protobuf/proto"
+
+	_ "modernc.org/sqlite" // needed for sqlite
+)
+
+const (
+	// Account config parameters
+	cfgNumber = "Number"
+)
+
+// Bwhatsapp Bridge structure keeping all the information needed for relying
+type Bwhatsapp struct {
+	*bridge.Config
+
+	startedAt   time.Time
+	wc          *whatsmeow.Client
+	contacts    map[types.JID]types.ContactInfo
+	users       map[string]types.ContactInfo
+	userAvatars map[string]string
+}
+
+// New Create a new WhatsApp bridge. This will be called for each [whatsapp.<server>] entry you have in the config file
+func New(cfg *bridge.Config) bridge.Bridger {
+	number := cfg.GetString(cfgNumber)
+
+	if number == "" {
+		cfg.Log.Fatalf("Missing configuration for WhatsApp bridge: Number")
+	}
+
+	b := &Bwhatsapp{
+		Config: cfg,
+
+		users:       make(map[string]types.ContactInfo),
+		userAvatars: make(map[string]string),
+	}
+
+	return b
+}
+
+// Connect to WhatsApp. Required implementation of the Bridger interface
+func (b *Bwhatsapp) Connect() error {
+	device, err := b.getDevice()
+	if err != nil {
+		return err
+	}
+
+	number := b.GetString(cfgNumber)
+	if number == "" {
+		return errors.New("whatsapp's telephone number need to be configured")
+	}
+
+	b.Log.Debugln("Connecting to WhatsApp..")
+
+	b.wc = whatsmeow.NewClient(device, waLog.Stdout("Client", "INFO", true))
+	b.wc.AddEventHandler(b.eventHandler)
+
+	firstlogin := false
+	var qrChan <-chan whatsmeow.QRChannelItem
+	if b.wc.Store.ID == nil {
+		firstlogin = true
+		qrChan, err = b.wc.GetQRChannel(context.Background())
+		if err != nil && !errors.Is(err, whatsmeow.ErrQRStoreContainsID) {
+			return errors.New("failed to to get QR channel:" + err.Error())
+		}
+	}
+
+	err = b.wc.Connect()
+	if err != nil {
+		return errors.New("failed to connect to WhatsApp: " + err.Error())
+	}
+
+	if b.wc.Store.ID == nil {
+		for evt := range qrChan {
+			if evt.Event == "code" {
+				qrterminal.GenerateHalfBlock(evt.Code, qrterminal.L, os.Stdout)
+			} else {
+				b.Log.Infof("QR channel result: %s", evt.Event)
+			}
+		}
+	}
+
+	// disconnect and reconnect on our first login/pairing
+	// for some reason the GetJoinedGroups in JoinChannel doesn't work on first login
+	if firstlogin {
+		b.wc.Disconnect()
+		time.Sleep(time.Second)
+
+		err = b.wc.Connect()
+		if err != nil {
+			return errors.New("failed to connect to WhatsApp: " + err.Error())
+		}
+	}
+
+	b.Log.Infoln("WhatsApp connection successful")
+
+	b.contacts, err = b.wc.Store.Contacts.GetAllContacts()
+	if err != nil {
+		return errors.New("failed to get contacts: " + err.Error())
+	}
+
+	b.startedAt = time.Now()
+
+	// map all the users
+	for id, contact := range b.contacts {
+		if !isGroupJid(id.String()) && id.String() != "status@broadcast" {
+			// it is user
+			b.users[id.String()] = contact
+		}
+	}
+
+	// get user avatar asynchronously
+	b.Log.Info("Getting user avatars..")
+
+	for jid := range b.users {
+		info, err := b.GetProfilePicThumb(jid)
+		if err != nil {
+			b.Log.Warnf("Could not get profile photo of %s: %v", jid, err)
+		} else {
+			b.Lock()
+			if info != nil {
+				b.userAvatars[jid] = info.URL
+			}
+			b.Unlock()
+		}
+	}
+
+	b.Log.Info("Finished getting avatars..")
+
+	return nil
+}
+
+// Disconnect is called while reconnecting to the bridge
+// Required implementation of the Bridger interface
+func (b *Bwhatsapp) Disconnect() error {
+	b.wc.Disconnect()
+
+	return nil
+}
+
+// JoinChannel Join a WhatsApp group specified in gateway config as channel='number-id@g.us' or channel='Channel name'
+// Required implementation of the Bridger interface
+// https://github.com/42wim/matterbridge/blob/2cfd880cdb0df29771bf8f31df8d990ab897889d/bridge/bridge.go#L11-L16
+func (b *Bwhatsapp) JoinChannel(channel config.ChannelInfo) error {
+	byJid := isGroupJid(channel.Name)
+
+	groups, err := b.wc.GetJoinedGroups()
+	if err != nil {
+		return err
+	}
+
+	// verify if we are member of the given group
+	if byJid {
+		gJID, err := types.ParseJID(channel.Name)
+		if err != nil {
+			return err
+		}
+
+		for _, group := range groups {
+			if group.JID == gJID {
+				return nil
+			}
+		}
+	}
+
+	foundGroups := []string{}
+
+	for _, group := range groups {
+		if group.Name == channel.Name {
+			foundGroups = append(foundGroups, group.Name)
+		}
+	}
+
+	switch len(foundGroups) {
+	case 0:
+		// didn't match any group - print out possibilites
+		for _, group := range groups {
+			b.Log.Infof("%s %s", group.JID, group.Name)
+		}
+		return fmt.Errorf("please specify group's JID from the list above instead of the name '%s'", channel.Name)
+	case 1:
+		return fmt.Errorf("group name might change. Please configure gateway with channel=\"%v\" instead of channel=\"%v\"", foundGroups[0], channel.Name)
+	default:
+		return fmt.Errorf("there is more than one group with name '%s'. Please specify one of JIDs as channel name: %v", channel.Name, foundGroups)
+	}
+}
+
+// Post a document message from the bridge to WhatsApp
+func (b *Bwhatsapp) PostDocumentMessage(msg config.Message, filetype string) (string, error) {
+	groupJID, _ := types.ParseJID(msg.Channel)
+
+	fi := msg.Extra["file"][0].(config.FileInfo)
+
+	resp, err := b.wc.Upload(context.Background(), *fi.Data, whatsmeow.MediaDocument)
+	if err != nil {
+		return "", err
+	}
+
+	// Post document message
+	var message proto.Message
+
+	message.DocumentMessage = &proto.DocumentMessage{
+		Title:         &fi.Name,
+		FileName:      &fi.Name,
+		Mimetype:      &filetype,
+		MediaKey:      resp.MediaKey,
+		FileEncSha256: resp.FileEncSHA256,
+		FileSha256:    resp.FileSHA256,
+		FileLength:    goproto.Uint64(resp.FileLength),
+		Url:           &resp.URL,
+	}
+
+	b.Log.Debugf("=> Sending %#v", msg)
+
+	ID := whatsmeow.GenerateMessageID()
+	_, err = b.wc.SendMessage(groupJID, ID, &message)
+
+	return ID, err
+}
+
+// Post an image message from the bridge to WhatsApp
+// Handle, for sure image/jpeg, image/png and image/gif MIME types
+func (b *Bwhatsapp) PostImageMessage(msg config.Message, filetype string) (string, error) {
+	groupJID, _ := types.ParseJID(msg.Channel)
+
+	fi := msg.Extra["file"][0].(config.FileInfo)
+
+	caption := msg.Username + fi.Comment
+
+	resp, err := b.wc.Upload(context.Background(), *fi.Data, whatsmeow.MediaImage)
+	if err != nil {
+		return "", err
+	}
+
+	var message proto.Message
+
+	message.ImageMessage = &proto.ImageMessage{
+		Mimetype:      &filetype,
+		Caption:       &caption,
+		MediaKey:      resp.MediaKey,
+		FileEncSha256: resp.FileEncSHA256,
+		FileSha256:    resp.FileSHA256,
+		FileLength:    goproto.Uint64(resp.FileLength),
+		Url:           &resp.URL,
+	}
+
+	b.Log.Debugf("=> Sending %#v", msg)
+
+	ID := whatsmeow.GenerateMessageID()
+	_, err = b.wc.SendMessage(groupJID, ID, &message)
+
+	return ID, err
+}
+
+// Send a message from the bridge to WhatsApp
+func (b *Bwhatsapp) Send(msg config.Message) (string, error) {
+	groupJID, _ := types.ParseJID(msg.Channel)
+
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		if msg.ID == "" {
+			// No message ID in case action is executed on a message sent before the bridge was started
+			// and then the bridge cache doesn't have this message ID mapped
+			return "", nil
+		}
+
+		_, err := b.wc.RevokeMessage(groupJID, msg.ID)
+
+		return "", err
+	}
+
+	// Edit message
+	if msg.ID != "" {
+		b.Log.Debugf("updating message with id %s", msg.ID)
+
+		if b.GetString("editsuffix") != "" {
+			msg.Text += b.GetString("EditSuffix")
+		} else {
+			msg.Text += " (edited)"
+		}
+	}
+
+	// Handle Upload a file
+	if msg.Extra["file"] != nil {
+		fi := msg.Extra["file"][0].(config.FileInfo)
+		filetype := mime.TypeByExtension(filepath.Ext(fi.Name))
+
+		b.Log.Debugf("Extra file is %#v", filetype)
+
+		// TODO: add different types
+		// TODO: add webp conversion
+		switch filetype {
+		case "image/jpeg", "image/png", "image/gif":
+			return b.PostImageMessage(msg, filetype)
+		default:
+			return b.PostDocumentMessage(msg, filetype)
+		}
+	}
+
+	text := msg.Username + msg.Text
+
+	var message proto.Message
+
+	message.Conversation = &text
+
+	ID := whatsmeow.GenerateMessageID()
+	_, err := b.wc.SendMessage(groupJID, ID, &message)
+
+	return ID, err
+}

changelog.md

@@ -1,3 +1,55 @@
+# v1.25.1
+
+## Enhancements
+
+- matrix: Add KeepQuotedReply option for matrix to fix regression (#1823)
+- slack: Improve Slack attachments formatting (slack) (#1807)
+
+## Bugfix
+
+- general: Update dependencies (#1813,#1822,#1833)
+- mattermost: Add space between filename and URL (mattermost). Fixes #1820
+- matrix: Update matterbridge/gomatrix. Fixes #1772 (#1803)
+- telegram: Do not modify .webm files (telegram). Fixes #17**88 (#1802)
+- telegram: Do not apply any markup to URL entities (telegram) (#1808)
+- telegram: Fix telegram message deletion request (#1818)
+- vk: Fix UploadMessagesPhoto for vk community chat (vk) (#1812)
+
+This release couldn't exist without the following contributors:
+@bd808, @chugunov, @sas1024, @SevereCloud, @ValdikSS
+
+# v1.25.0
+
+## Breaking changes
+
+- whatsapp: deprecated, the library <https://github.com/Rhymen/go-whatsapp> isn't maintained anymore.
+We're switching to <https://github.com/tulir/whatsmeow> but as this uses a GPL3 licensed library we can't provide you with binaries.
+You'll need to build it yourself. More information about this can be found here: <https://github.com/42wim/matterbridge#building-with-whatsapp-beta-multidevice-support>
+
+## New features
+
+- whatsappmulti: whatsapp multidevice support added - more info <https://github.com/42wim/matterbridge#building-with-whatsapp-beta-multidevice-support>
+- general: Add Dockerfile_whatsappmulti for building with WhatsApp Multi-Device support (Whatsmeow) (#1774)
+- telegram: Add UseFullName option (telegram) (#1777)
+- slack: Use slack real name as user name (slack) (#1775)
+
+## Enhancements
+
+- general: Ignore sending file with comment, if comment contains IgnoreMessages value (#1783)
+- general: Update dependencies (#1784)
+- irc: Update lrstanley/girc dep (#1773)
+- slack: Preserve threading for messages with files (slack) (#1781)
+- telegram: Preserve threading from telegram replies (telegram) (#1776)
+- telegram: Multiple media in one message (telegram) (#1779)
+- whatsapp: Add whatsapp deprecation warning (#1792)
+
+## Bugfix
+
+- discord: Change discord non-native threading behaviour (discord) (#1791)
+
+This release couldn't exist without the following contributors:
+@sas1024, @tpxtron
+
 # v1.24.1
 
 ## Enhancements

gateway/bridgemap/bwhatsapp.go

@@ -1,4 +1,5 @@
 // +build !nowhatsapp
+// +build !whatsappmulti
 
 package bridgemap
 

gateway/bridgemap/bwhatsappmulti.go

@@ -0,0 +1,11 @@
+// +build whatsappmulti
+
+package bridgemap
+
+import (
+	bwhatsapp "github.com/42wim/matterbridge/bridge/whatsappmulti"
+)
+
+func init() {
+	FullMap["whatsapp"] = bwhatsapp.New
+}

gateway/gateway.go

@@ -299,13 +299,30 @@ func (gw *Gateway) ignoreMessage(msg *config.Message) bool {
 
 	igNicks := strings.Fields(gw.Bridges[msg.Account].GetString("IgnoreNicks"))
 	igMessages := strings.Fields(gw.Bridges[msg.Account].GetString("IgnoreMessages"))
-	if gw.ignoreTextEmpty(msg) || gw.ignoreText(msg.Username, igNicks) || gw.ignoreText(msg.Text, igMessages) {
+	if gw.ignoreTextEmpty(msg) || gw.ignoreText(msg.Username, igNicks) || gw.ignoreText(msg.Text, igMessages) || gw.ignoreFilesComment(msg.Extra, igMessages) {
 		return true
 	}
 
 	return false
 }
 
+// ignoreFilesComment returns true if we need to ignore a file with matched comment.
+func (gw *Gateway) ignoreFilesComment(extra map[string][]interface{}, igMessages []string) bool {
+	if extra == nil {
+		return false
+	}
+	for _, f := range extra["file"] {
+		fi, ok := f.(config.FileInfo)
+		if !ok {
+			continue
+		}
+		if gw.ignoreText(fi.Comment, igMessages) {
+			return true
+		}
+	}
+	return false
+}
+
 func (gw *Gateway) modifyUsername(msg *config.Message, dest *bridge.Bridge) string {
 	if dest.GetBool("StripNick") {
 		re := regexp.MustCompile("[^a-zA-Z0-9]+")

go.mod

@@ -6,55 +6,60 @@ require (
 	github.com/Benau/tgsconverter v0.0.0-20210809170556-99f4a4f6337f
 	github.com/Philipp15b/go-steam v1.0.1-0.20200727090957-6ae9b3c0a560
 	github.com/Rhymen/go-whatsapp v0.1.2-0.20211102134409-31a2e740845c
-	github.com/SevereCloud/vksdk/v2 v2.13.1
-	github.com/bwmarrin/discordgo v0.24.0
+	github.com/SevereCloud/vksdk/v2 v2.14.0
+	github.com/bwmarrin/discordgo v0.25.0
 	github.com/d5/tengo/v2 v2.10.1
 	github.com/davecgh/go-spew v1.1.1
-	github.com/fsnotify/fsnotify v1.5.1
+	github.com/fsnotify/fsnotify v1.5.4
 	github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1
-	github.com/gomarkdown/markdown v0.0.0-20220310201231-552c6011c0b8
-	github.com/google/gops v0.3.22
+	github.com/gomarkdown/markdown v0.0.0-20220509074759-a57bf950ab8c
+	github.com/google/gops v0.3.23
 	github.com/gorilla/schema v1.2.0
 	github.com/gorilla/websocket v1.5.0
 	github.com/harmony-development/shibshib v0.0.0-20220101224523-c98059d09cfa
 	github.com/hashicorp/golang-lru v0.5.4
 	github.com/jpillora/backoff v1.0.0
-	github.com/keybase/go-keybase-chat-bot v0.0.0-20211201215354-ee4b23828b55
+	github.com/keybase/go-keybase-chat-bot v0.0.0-20220322223021-75d497527469
 	github.com/kyokomi/emoji/v2 v2.2.9
-	github.com/labstack/echo/v4 v4.7.0
-	github.com/lrstanley/girc v0.0.0-20211023233735-147f0ff77566
-	github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16
+	github.com/labstack/echo/v4 v4.7.2
+	github.com/lrstanley/girc v0.0.0-20220507183218-96757fe3d2a2
 	github.com/matterbridge/Rocket.Chat.Go.SDK v0.0.0-20211016222428-79310a412696
 	github.com/matterbridge/go-xmpp v0.0.0-20211030125215-791a06c5f1be
+	github.com/matterbridge/gomatrix v0.0.0-20220411225302-271e5088ea27
 	github.com/matterbridge/gozulipbot v0.0.0-20211023205727-a19d6c1f3b75
 	github.com/matterbridge/logrus-prefixed-formatter v0.5.3-0.20200523233437-d971309a77ba
-	github.com/matterbridge/matterclient v0.0.0-20211107234719-faca3cd42315
+	github.com/matterbridge/matterclient v0.0.0-20220430213656-07aca2731bc9
 	github.com/mattermost/mattermost-server/v5 v5.39.3
-	github.com/mattermost/mattermost-server/v6 v6.4.2
+	github.com/mattermost/mattermost-server/v6 v6.6.1
 	github.com/mattn/godown v0.0.1
-	github.com/nelsonken/gomf v0.0.0-20180504123937-a9dd2f9deae9
+	github.com/mdp/qrterminal v1.0.1
+	github.com/nelsonken/gomf v0.0.0-20190423072027-c65cc0469e94
 	github.com/paulrosania/go-charset v0.0.0-20190326053356-55c9d7a5834c
-	github.com/rs/xid v1.3.0
+	github.com/rs/xid v1.4.0
 	github.com/russross/blackfriday v1.6.0
 	github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca
 	github.com/shazow/ssh-chat v1.10.1
 	github.com/sirupsen/logrus v1.8.1
-	github.com/slack-go/slack v0.10.2
-	github.com/spf13/viper v1.10.1
-	github.com/stretchr/testify v1.7.0
+	github.com/slack-go/slack v0.10.3
+	github.com/spf13/viper v1.11.0
+	github.com/stretchr/testify v1.7.1
 	github.com/vincent-petithory/dataurl v1.0.0
 	github.com/writeas/go-strip-markdown v2.0.1+incompatible
 	github.com/yaegashi/msgraph.go v0.1.4
-	github.com/zfjagann/golang-ring v0.0.0-20210116075443-7c86fdb43134
-	golang.org/x/image v0.0.0-20220302094943-723b81ca9867
-	golang.org/x/oauth2 v0.0.0-20220309155454-6242fa91716a
+	github.com/zfjagann/golang-ring v0.0.0-20220330170733-19bcea1b6289
+	go.mau.fi/whatsmeow v0.0.0-20220504135614-f1f2a9d231fb
+	golang.org/x/image v0.0.0-20220413100746-70e8d0d3baa9
+	golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5
 	golang.org/x/text v0.3.7
 	gomod.garykim.dev/nc-talk v0.3.0
+	google.golang.org/protobuf v1.28.0
 	gopkg.in/olahol/melody.v1 v1.0.0-20170518105555-d52139073376
 	layeh.com/gumble v0.0.0-20200818122324-146f9205029b
+	modernc.org/sqlite v1.17.2
 )
 
 require (
+	filippo.io/edwards25519 v1.0.0-rc.1 // indirect
 	github.com/Benau/go_rlottie v0.0.0-20210807002906-98c1b2421989 // indirect
 	github.com/Jeffail/gabs v1.4.0 // indirect
 	github.com/apex/log v1.9.0 // indirect
@@ -68,15 +73,17 @@ require (
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/gopackage/ddp v0.0.3 // indirect
+	github.com/graph-gophers/graphql-go v1.3.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
 	github.com/kettek/apng v0.0.0-20191108220231-414630eed80f // indirect
-	github.com/klauspost/compress v1.14.2 // indirect
-	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
+	github.com/klauspost/compress v1.15.1 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.11 // indirect
 	github.com/labstack/gommon v0.3.1 // indirect
-	github.com/magiconair/properties v1.8.5 // indirect
+	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mattermost/go-i18n v1.11.1-0.20211013152124-5c415071e404 // indirect
 	github.com/mattermost/ldap v0.0.0-20201202150706-ee0e6284187d // indirect
 	github.com/mattermost/logr v1.0.13 // indirect
@@ -86,7 +93,7 @@ require (
 	github.com/mattn/go-runewidth v0.0.13 // indirect
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
 	github.com/minio/md5-simd v1.1.2 // indirect
-	github.com/minio/minio-go/v7 v7.0.16 // indirect
+	github.com/minio/minio-go/v7 v7.0.23 // indirect
 	github.com/minio/sha256-simd v1.0.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/mapstructure v1.4.3 // indirect
@@ -95,18 +102,21 @@ require (
 	github.com/monaco-io/request v1.0.5 // indirect
 	github.com/mreiferson/go-httpclient v0.0.0-20201222173833-5e475fde3a4d // indirect
 	github.com/mrexodia/wray v0.0.0-20160318003008-78a2c1f284ff // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
 	github.com/pborman/uuid v1.2.1 // indirect
 	github.com/pelletier/go-toml v1.9.4 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.0-beta.8 // indirect
 	github.com/philhofer/fwd v1.1.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 // indirect
 	github.com/rickb777/date v1.12.4 // indirect
 	github.com/rickb777/plural v1.2.0 // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/shazow/rateio v0.0.0-20200113175441-4461efc8bdc4 // indirect
 	github.com/sizeofint/webpanimation v0.0.0-20210809145948-1d2b32119882 // indirect
-	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e // indirect
-	github.com/spf13/afero v1.6.0 // indirect
+	github.com/skip2/go-qrcode v0.0.0-20190110000554-dc11ecdae0a9 // indirect
+	github.com/spf13/afero v1.8.2 // indirect
 	github.com/spf13/cast v1.4.1 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
@@ -119,22 +129,35 @@ require (
 	github.com/wiggin77/cfg v1.0.2 // indirect
 	github.com/wiggin77/merror v1.0.3 // indirect
 	github.com/wiggin77/srslog v1.0.1 // indirect
+	go.mau.fi/libsignal v0.0.0-20220425070825-c40c839ee6a0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.7.0 // indirect
 	go.uber.org/zap v1.17.0 // indirect
-	golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871 // indirect
-	golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd // indirect
-	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect
+	golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 // indirect
+	golang.org/x/mod v0.5.1 // indirect
+	golang.org/x/net v0.0.0-20220412020605-290c469a71a5 // indirect
+	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad // indirect
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
 	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324 // indirect
+	golang.org/x/tools v0.1.9 // indirect
+	golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
-	gopkg.in/ini.v1 v1.66.2 // indirect
+	gopkg.in/ini.v1 v1.66.4 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	lukechampine.com/uint128 v1.1.1 // indirect
+	modernc.org/cc/v3 v3.36.0 // indirect
+	modernc.org/ccgo/v3 v3.16.6 // indirect
+	modernc.org/libc v1.16.7 // indirect
+	modernc.org/mathutil v1.4.1 // indirect
+	modernc.org/memory v1.1.1 // indirect
+	modernc.org/opt v0.1.1 // indirect
+	modernc.org/strutil v1.1.1 // indirect
+	modernc.org/token v1.0.0 // indirect
+	rsc.io/qr v0.2.0 // indirect
 )
 
-replace github.com/matrix-org/gomatrix => github.com/matterbridge/gomatrix v0.0.0-20220205235239-607eb9ee6419
+//replace github.com/matrix-org/gomatrix => github.com/matterbridge/gomatrix v0.0.0-20220205235239-607eb9ee6419
 
 go 1.17

go.sum

@@ -7,6 +7,7 @@ cloud.google.com/go v0.37.1/go.mod h1:SAbnLi6YTSPKSI0dTUEOVLCkyPfKXK8n4ibqiMoj4o
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
 cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
 cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
 cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
@@ -21,6 +22,7 @@ cloud.google.com/go v0.64.0/go.mod h1:xfORb36jGvE+6EexW71nMEtL025s3x6xvuYUKM4JLv
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
 cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
@@ -32,13 +34,18 @@ cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aD
 cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
 cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
 cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
+cloud.google.com/go v0.98.0/go.mod h1:ua6Ush4NALrHk5QXDWnjvZHN93OuF0HfuEPq9I1X0cM=
 cloud.google.com/go v0.99.0/go.mod h1:w0Xx2nLzqWJPuozYQX+hFfCSI8WioryfRDzkoI/Y2ZA=
+cloud.google.com/go v0.100.2/go.mod h1:4Xra9TjzAeYHrl5+oeLlzbM2k3mjVhZh4UqTZ//w99A=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
 cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
 cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
+cloud.google.com/go/compute v0.1.0/go.mod h1:GAesmwr110a34z04OlxYkATPBEfVhkymfTBXtfbBFow=
+cloud.google.com/go/compute v1.3.0/go.mod h1:cCZiE1NHEtai4wiufUhW8I8S1JKkAnhnQJWM7YD99wM=
+cloud.google.com/go/compute v1.5.0/go.mod h1:9SMHyhJlzhlkJqrPAc839t2BZFTSk6Jdj6mkzQJeu0M=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
 cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
@@ -54,6 +61,7 @@ cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0Zeo
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
+cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 code.sajari.com/docconv v1.1.1-0.20210427001343-7b3472bc323a/go.mod h1:KPNt2zuWplps1W0TpOb6ltHj4Xu+j6h7a+YkqGHrxQE=
 code.sajari.com/docconv v1.2.0/go.mod h1:r8yfCP6OKbZ9Xkd87aBa4nfpk6ud/PoyLwex3n6cXSc=
 contrib.go.opencensus.io/exporter/ocagent v0.4.9/go.mod h1:ueLzZcP7LPhPulEBukGn4aLh7Mx9YJwpVJ9nL2FYltw=
@@ -62,6 +70,8 @@ dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7
 dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
 dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
 dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
+filippo.io/edwards25519 v1.0.0-rc.1 h1:m0VOOB23frXZvAOK44usCgLWvtsxIoMCTBGJZlpmGfU=
+filippo.io/edwards25519 v1.0.0-rc.1/go.mod h1:N1IkdkCkiLB6tki+MYJoSx2JTY9NUlxZE7eHn5EwJns=
 gioui.org v0.0.0-20210308172011-57750fc8a0a6/go.mod h1:RSH6KIUZ0p2xy5zHDxgAM4zumjgTw83q2ge/PI+yyw8=
 git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
 git.apache.org/thrift.git v0.12.0/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
@@ -112,7 +122,7 @@ github.com/Masterminds/glide v0.13.2/go.mod h1:STyF5vcenH/rUqTEv+/hBXlSTo7KYwg2o
 github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/Masterminds/squirrel v1.5.0/go.mod h1:NNaOrjSoIDfDA40n7sr2tPNZRfjzjA400rg+riTZj10=
-github.com/Masterminds/squirrel v1.5.1/go.mod h1:NNaOrjSoIDfDA40n7sr2tPNZRfjzjA400rg+riTZj10=
+github.com/Masterminds/squirrel v1.5.2/go.mod h1:NNaOrjSoIDfDA40n7sr2tPNZRfjzjA400rg+riTZj10=
 github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA=
 github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
@@ -149,8 +159,8 @@ github.com/Rhymen/go-whatsapp v0.1.2-0.20211102134409-31a2e740845c/go.mod h1:DNS
 github.com/RoaringBitmap/roaring v0.4.23/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
 github.com/RoaringBitmap/roaring v0.8.0/go.mod h1:jdT9ykXwHFNdJbEtxePexlFYH9LXucApeS0/+/g+p1I=
 github.com/RoaringBitmap/roaring v0.9.4/go.mod h1:icnadbWcNyfEHlYdr+tDlOTih1Bf/h+rzPpv4sbomAA=
-github.com/SevereCloud/vksdk/v2 v2.13.1 h1:D11NaP275mW01v2hRF0ycDHdJaIyZEvasZV4MSkg5Sk=
-github.com/SevereCloud/vksdk/v2 v2.13.1/go.mod h1:UyOgSj/CYt2dByu3Fyf/y1yT1NoahVi4zECvvrbtPU4=
+github.com/SevereCloud/vksdk/v2 v2.14.0 h1:1lciJC4FWhSQIjjFb3NGyJI7x9sPKk/P6aAvR0ibh1o=
+github.com/SevereCloud/vksdk/v2 v2.14.0/go.mod h1:J/iPooVfldjVADo47G5aNxkvlRWAsZnMHpri8sZmck4=
 github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqRtAwp2Xwc6WNPJEufxJ7fx3npB4UV/JOLmbu5I0=
 github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
@@ -206,7 +216,7 @@ github.com/aws/aws-sdk-go v1.17.7/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN
 github.com/aws/aws-sdk-go v1.19.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.20.6/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.38.67/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
-github.com/aws/aws-sdk-go v1.42.11/go.mod h1:585smgzpB/KqRA+K3y/NL/oYRqQvpNJYvLm+LY1U59Q=
+github.com/aws/aws-sdk-go v1.43.6/go.mod h1:y4AeaBuwd2Lk+GepC1E9v0qOiTws0MIWAX4oIKwKHZo=
 github.com/aws/aws-sdk-go-v2 v1.8.0/go.mod h1:xEFuWz+3TYdlPRuo+CqATbeDWIWyaT5uAPwPaWtgse0=
 github.com/aws/aws-sdk-go-v2 v1.9.2/go.mod h1:cK/D0BBs0b/oWPIcX/Z/obahJK1TT7IPVjy53i/mX/4=
 github.com/aws/aws-sdk-go-v2/config v1.6.0/go.mod h1:TNtBVmka80lRPk5+S9ZqVfFszOQAGJJ9KbT3EM3CHNU=
@@ -234,6 +244,7 @@ github.com/aws/aws-sdk-go-v2/service/sts v1.7.2/go.mod h1:8EzeIqfWt2wWT4rJVu3f21
 github.com/aws/smithy-go v1.7.0/go.mod h1:SObp3lf9smib00L/v3U2eAKG8FyQ7iLrJnQiAmR5n+E=
 github.com/aws/smithy-go v1.8.0/go.mod h1:SObp3lf9smib00L/v3U2eAKG8FyQ7iLrJnQiAmR5n+E=
 github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59/go.mod h1:q/89r3U2H7sSsE2t6Kca0lfwTK8JdoNGS/yzM/4iH5I=
+github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
 github.com/aymerick/raymond v2.0.3-0.20180322193309-b565731e1464+incompatible/go.mod h1:osfaiScAUVup+UC9Nfq76eWqDhXlp+4UYaA8uhTBO6g=
 github.com/beevik/etree v1.1.0/go.mod h1:r8Aw8JqVegEf0w2fDnATrX9VpkMcyFeM0FhwO62wh+A=
 github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
@@ -252,7 +263,7 @@ github.com/blang/semver v3.1.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnweb
 github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/blevesearch/bleve v1.0.14/go.mod h1:e/LJTr+E7EaoVdkQZTfoz7dt4KoDNvDbLb8MSKuNTLQ=
-github.com/blevesearch/bleve/v2 v2.3.0/go.mod h1:egW/6gZEhM3oBvRjuHXGvGb92cKZ9867OqPZAmCG8MQ=
+github.com/blevesearch/bleve/v2 v2.3.1/go.mod h1:kAJuWn2L1TNSUyxtPJD4AGma2/PgMSm7GBlx61F9OBs=
 github.com/blevesearch/bleve_index_api v1.0.1/go.mod h1:fiwKS0xLEm+gBRgv5mumf0dhgFr2mDgZah1pqv1c1M4=
 github.com/blevesearch/blevex v1.0.0/go.mod h1:2rNVqoG2BZI8t1/P1awgTKnGlx5MP9ZbtEciQaNhswc=
 github.com/blevesearch/cld2 v0.0.0-20200327141045-8b5f551d37f5/go.mod h1:PN0QNTLs9+j1bKy3d/GB/59wsNBFC4sWLWG3k69lWbc=
@@ -269,11 +280,11 @@ github.com/blevesearch/zap/v12 v12.0.14/go.mod h1:rOnuZOiMKPQj18AEKEHJxuI14236tT
 github.com/blevesearch/zap/v13 v13.0.6/go.mod h1:L89gsjdRKGyGrRN6nCpIScCvvkyxvmeDCwZRcjjPCrw=
 github.com/blevesearch/zap/v14 v14.0.5/go.mod h1:bWe8S7tRrSBTIaZ6cLRbgNH4TUDaC9LZSpRGs85AsGY=
 github.com/blevesearch/zap/v15 v15.0.3/go.mod h1:iuwQrImsh1WjWJ0Ue2kBqY83a0rFtJTqfa9fp1rbVVU=
-github.com/blevesearch/zapx/v11 v11.3.2/go.mod h1:YzTfUm4kS3e8OmTXDHVV8OzC5MWPO/VPJZQgPNVb4Lc=
-github.com/blevesearch/zapx/v12 v12.3.2/go.mod h1:RMl6lOZqF+sTxKvhQDJ5yK2LT3Mu7E2p/jGdjAaiRxs=
-github.com/blevesearch/zapx/v13 v13.3.2/go.mod h1:eppobNM35U4C22yDvTuxV9xPqo10pwfP/jugL4INWG4=
-github.com/blevesearch/zapx/v14 v14.3.2/go.mod h1:zXNcVzukh0AvG57oUtT1T0ndi09H0kELNaNmekEy0jw=
-github.com/blevesearch/zapx/v15 v15.3.2/go.mod h1:C+f/97ZzTzK6vt/7sVlZdzZxKu+5+j4SrGCvr9dJzaY=
+github.com/blevesearch/zapx/v11 v11.3.3/go.mod h1:YzTfUm4kS3e8OmTXDHVV8OzC5MWPO/VPJZQgPNVb4Lc=
+github.com/blevesearch/zapx/v12 v12.3.3/go.mod h1:RMl6lOZqF+sTxKvhQDJ5yK2LT3Mu7E2p/jGdjAaiRxs=
+github.com/blevesearch/zapx/v13 v13.3.3/go.mod h1:eppobNM35U4C22yDvTuxV9xPqo10pwfP/jugL4INWG4=
+github.com/blevesearch/zapx/v14 v14.3.3/go.mod h1:zXNcVzukh0AvG57oUtT1T0ndi09H0kELNaNmekEy0jw=
+github.com/blevesearch/zapx/v15 v15.3.3/go.mod h1:C+f/97ZzTzK6vt/7sVlZdzZxKu+5+j4SrGCvr9dJzaY=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
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@@ -283,8 +294,8 @@ github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7
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@@ -433,6 +444,7 @@ github.com/couchbase/vellum v1.0.2/go.mod h1:FcwrEivFpNi24R3jLOs3n+fs5RnuQnQqCLB
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@@ -537,8 +549,9 @@ github.com/francoispqt/gojay v1.2.13/go.mod h1:ehT5mTG4ua4581f1++1WLG0vPdaA9HaiD
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@@ -547,13 +560,12 @@ github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7/go.mod h1:NR3MbYis
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@@ -580,7 +592,6 @@ github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG
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@@ -590,8 +601,6 @@ github.com/go-openapi/jsonreference v0.19.3/go.mod h1:rjx6GuL8TTa9VaixXglHmQmIL9
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@@ -702,8 +711,8 @@ github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEW
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@@ -722,15 +731,16 @@ github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -744,6 +754,7 @@ github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hf
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@@ -763,15 +774,19 @@ github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+
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@@ -788,6 +803,8 @@ github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/ad
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 github.com/ziutek/mymysql v1.5.4/go.mod h1:LMSpPZ6DbqWFxNCHW77HeMg9I646SAhApZ/wKdgO/C0=
 gitlab.com/nyarla/go-crypt v0.0.0-20160106005555-d9a5dc2b789b/go.mod h1:T3BPAOm2cqquPa0MKWeNkmOM5RQsRhkrwMWonFMN7fE=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
@@ -1693,10 +1751,17 @@ go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
 go.etcd.io/etcd v0.5.0-alpha.5.0.20200910180754-dd1b699fc489/go.mod h1:yVHk9ub3CSBatqGNg7GRmsnfLWtoW60w4eDYfh7vHDg=
 go.etcd.io/etcd/api/v3 v3.5.0/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=
 go.etcd.io/etcd/api/v3 v3.5.1/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=
+go.etcd.io/etcd/api/v3 v3.5.2/go.mod h1:5GB2vv4A4AOn3yk7MftYGHkUfGtDHnEraIjym4dYz5A=
 go.etcd.io/etcd/client/pkg/v3 v3.5.0/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
 go.etcd.io/etcd/client/pkg/v3 v3.5.1/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
+go.etcd.io/etcd/client/pkg/v3 v3.5.2/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
 go.etcd.io/etcd/client/v2 v2.305.0/go.mod h1:h9puh54ZTgAKtEbut2oe9P4L/oqKCVB6xsXlzd7alYQ=
 go.etcd.io/etcd/client/v2 v2.305.1/go.mod h1:pMEacxZW7o8pg4CrFE7pquyCJJzZvkvdD2RibOCCCGs=
+go.etcd.io/etcd/client/v2 v2.305.2/go.mod h1:2D7ZejHVMIfog1221iLSYlQRzrtECw3kz4I4VAQm3qI=
+go.mau.fi/libsignal v0.0.0-20220425070825-c40c839ee6a0 h1:3IQF2bgAyibdo77hTejwuJe4jlypj9QaE4xCQuxrThM=
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 go.mongodb.org/mongo-driver v1.1.0/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qLUO4lqsUM=
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 go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1/go.mod h1:SNgMg+EgDFwmvSmLRTNKC5fegJjB7v23qTQ0XLGUNHk=
@@ -1777,8 +1842,10 @@ golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5y
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871 h1:/pEO3GD/ABYAjuakUS6xSEmmlyVS4kxBNkeA9tLJiTI=
-golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
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@@ -1807,8 +1874,8 @@ golang.org/x/image v0.0.0-20201208152932-35266b937fa6/go.mod h1:FeLwcggjj3mMvU+o
 golang.org/x/image v0.0.0-20210216034530-4410531fe030/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
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@@ -1836,6 +1903,7 @@ golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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+golang.org/x/mod v0.5.1 h1:OJxoQ/rynoF0dcCdI7cLPktw/hR2cueqYfjm43oqK38=
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@@ -1908,16 +1976,19 @@ golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qx
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@@ -1941,8 +2012,10 @@ golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ
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@@ -2053,16 +2126,17 @@ golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -2073,7 +2147,6 @@ golang.org/x/sys v0.0.0-20210616045830-e2b7044e8c71/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/sys v0.0.0-20210816074244-15123e1e1f71/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210816183151-1e6c022a8912/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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@@ -2083,11 +2156,20 @@ golang.org/x/sys v0.0.0-20210908233432-aa78b53d3365/go.mod h1:oPkhp1MJrh7nUepCBc
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@@ -2190,20 +2272,24 @@ golang.org/x/tools v0.0.0-20201208233053-a543418bbed2/go.mod h1:emZCQorbCU4vsT4f
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@@ -2250,7 +2336,12 @@ google.golang.org/api v0.56.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqiv
 google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdrMgI=
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+google.golang.org/api v0.62.0/go.mod h1:dKmwPCydfsad4qCH08MSdgWjfHOyfpd4VtDGgRFdavw=
 google.golang.org/api v0.63.0/go.mod h1:gs4ij2ffTRXwuzzgJl/56BdwJaA194ijkfn++9tDuPo=
+google.golang.org/api v0.67.0/go.mod h1:ShHKP8E60yPsKNw/w8w+VYaj9H6buA5UqDp8dhbQZ6g=
+google.golang.org/api v0.70.0/go.mod h1:Bs4ZM2HGifEvXwd50TtW70ovgJffJYw2oRCOFU/SkfA=
+google.golang.org/api v0.71.0/go.mod h1:4PyU6e6JogV1f9eA4voyrTY2batOLdgZ5qZ5HOCc4j8=
+google.golang.org/api v0.74.0/go.mod h1:ZpfMZOVRMywNyvJFeqL9HRWBgAuRfSjJFpe9QtRRyDs=
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 google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -2312,8 +2403,10 @@ google.golang.org/genproto v0.0.0-20201110150050-8816d57aaa9a/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
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@@ -2341,8 +2434,19 @@ google.golang.org/genproto v0.0.0-20211008145708-270636b82663/go.mod h1:5CzLGKJ6
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@@ -2381,7 +2485,8 @@ google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9K
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-google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.44.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.45.0/go.mod h1:lN7owxKUQEqMfSyQikvvk5tf/6zMPsrK+ONuO11+0rQ=
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@@ -2395,8 +2500,9 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
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-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
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 modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k=
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+rsc.io/qr v0.2.0/go.mod h1:IF+uZjkb9fqyeF/4tlBoynqmQxUoPfWEKh921coOuXs=
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matterbridge.toml.sample

@@ -862,6 +862,10 @@ ShowUserTyping=false
 #Default "<clipped message>"
 MessageClipped="<clipped message>"
 
+#If enabled use the slack "Real Name" as username.
+#OPTIONAL (default false)
+UseFullName=false
+
 ###################################################################
 #discord section
 ###################################################################
@@ -1036,6 +1040,12 @@ DisableWebPagePreview=false
 #OPTIONAL (default false)
 UseFirstName=false
 
+#If enabled use the "Full Name" as username. If this is empty use the Username
+#If disabled use the "Username" as username. If this is empty use the First Name and Last Name as Full Name
+#If all names are empty, username will be "unknown"
+#OPTIONAL (default false)
+UseFullName=false
+
 #WARNING! If enabled this will relay GIF/stickers/documents and other attachments as URLs
 #Those URLs will contain your bot-token. This may not be what you want.
 #For now there is no secure way to relay GIF/stickers/documents without seeing your token.
@@ -1141,6 +1151,12 @@ StripNick=false
 #OPTIONAL (default false)
 ShowTopicChange=false
 
+#Opportunistically preserve threaded replies between Telegram groups.
+#This only works if the parent message is still in the cache.
+#Cache is flushed between restarts.
+#OPTIONAL (default false)
+PreserveThreading=false
+
 ###################################################################
 #rocketchat section
 ###################################################################
@@ -1312,6 +1328,15 @@ HTMLDisable=false
 # UseUserName shows the username instead of the server nickname
 UseUserName=false
 
+# Matrix quotes replies and as of matterbridge 1.24.0 we strip those as this causes
+# issues with bridges support threading and have PreserveThreading enabled.
+# But if you for example use mattermost or discord with webhooks you'll need to enable 
+# this (and keep PreserveThreading disabled) if you want something that looks like a reply from matrix.
+# See issues: 
+# - https://github.com/42wim/matterbridge/issues/1819
+# - https://github.com/42wim/matterbridge/issues/1780
+KeepQuotedReply=false
+
 #Nicks you want to ignore.
 #Regular expressions supported
 #Messages from those users will not be sent to other bridges.

vendor/filippo.io/edwards25519/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/filippo.io/edwards25519/README.md

@@ -0,0 +1,14 @@
+# filippo.io/edwards25519
+
+```
+import "filippo.io/edwards25519"
+```
+
+This library implements the edwards25519 elliptic curve, exposing the necessary APIs to build a wide array of higher-level primitives.
+Read the docs at [pkg.go.dev/filippo.io/edwards25519](https://pkg.go.dev/filippo.io/edwards25519).
+
+The code is originally derived from Adam Langley's internal implementation in the Go standard library, and includes George Tankersley's [performance improvements](https://golang.org/cl/71950). It was then further developed by Henry de Valence for use in ristretto255.
+
+Most users don't need this package, and should instead use `crypto/ed25519` for signatures, `golang.org/x/crypto/curve25519` for Diffie-Hellman, or `github.com/gtank/ristretto255` for prime order group logic. However, for anyone currently using a fork of `crypto/ed25519/internal/edwards25519` or `github.com/agl/edwards25519`, this package should be a safer, faster, and more powerful alternative.
+
+Since this package is meant to curb proliferation of edwards25519 implementations in the Go ecosystem, it welcomes requests for new APIs or reviewable performance improvements.

vendor/filippo.io/edwards25519/doc.go

@@ -0,0 +1,20 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package edwards25519 implements group logic for the twisted Edwards curve
+//
+//     -x^2 + y^2 = 1 + -(121665/121666)*x^2*y^2
+//
+// This is better known as the Edwards curve equivalent to Curve25519, and is
+// the curve used by the Ed25519 signature scheme.
+//
+// Most users don't need this package, and should instead use crypto/ed25519 for
+// signatures, golang.org/x/crypto/curve25519 for Diffie-Hellman, or
+// github.com/gtank/ristretto255 for prime order group logic.
+//
+// However, developers who do need to interact with low-level edwards25519
+// operations can use this package, which is an extended version of
+// crypto/ed25519/internal/edwards25519 from the standard library repackaged as
+// an importable module.
+package edwards25519

vendor/filippo.io/edwards25519/edwards25519.go

@@ -0,0 +1,428 @@
+// Copyright (c) 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import (
+	"errors"
+
+	"filippo.io/edwards25519/field"
+)
+
+// Point types.
+
+type projP1xP1 struct {
+	X, Y, Z, T field.Element
+}
+
+type projP2 struct {
+	X, Y, Z field.Element
+}
+
+// Point represents a point on the edwards25519 curve.
+//
+// This type works similarly to math/big.Int, and all arguments and receivers
+// are allowed to alias.
+//
+// The zero value is NOT valid, and it may be used only as a receiver.
+type Point struct {
+	// The point is internally represented in extended coordinates (X, Y, Z, T)
+	// where x = X/Z, y = Y/Z, and xy = T/Z per https://eprint.iacr.org/2008/522.
+	x, y, z, t field.Element
+
+	// Make the type not comparable (i.e. used with == or as a map key), as
+	// equivalent points can be represented by different Go values.
+	_ incomparable
+}
+
+type incomparable [0]func()
+
+func checkInitialized(points ...*Point) {
+	for _, p := range points {
+		if p.x == (field.Element{}) && p.y == (field.Element{}) {
+			panic("edwards25519: use of uninitialized Point")
+		}
+	}
+}
+
+type projCached struct {
+	YplusX, YminusX, Z, T2d field.Element
+}
+
+type affineCached struct {
+	YplusX, YminusX, T2d field.Element
+}
+
+// Constructors.
+
+func (v *projP2) Zero() *projP2 {
+	v.X.Zero()
+	v.Y.One()
+	v.Z.One()
+	return v
+}
+
+// identity is the point at infinity.
+var identity, _ = new(Point).SetBytes([]byte{
+	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+
+// NewIdentityPoint returns a new Point set to the identity.
+func NewIdentityPoint() *Point {
+	return new(Point).Set(identity)
+}
+
+// generator is the canonical curve basepoint. See TestGenerator for the
+// correspondence of this encoding with the values in RFC 8032.
+var generator, _ = new(Point).SetBytes([]byte{
+	0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66})
+
+// NewGeneratorPoint returns a new Point set to the canonical generator.
+func NewGeneratorPoint() *Point {
+	return new(Point).Set(generator)
+}
+
+func (v *projCached) Zero() *projCached {
+	v.YplusX.One()
+	v.YminusX.One()
+	v.Z.One()
+	v.T2d.Zero()
+	return v
+}
+
+func (v *affineCached) Zero() *affineCached {
+	v.YplusX.One()
+	v.YminusX.One()
+	v.T2d.Zero()
+	return v
+}
+
+// Assignments.
+
+// Set sets v = u, and returns v.
+func (v *Point) Set(u *Point) *Point {
+	*v = *u
+	return v
+}
+
+// Encoding.
+
+// Bytes returns the canonical 32-byte encoding of v, according to RFC 8032,
+// Section 5.1.2.
+func (v *Point) Bytes() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var buf [32]byte
+	return v.bytes(&buf)
+}
+
+func (v *Point) bytes(buf *[32]byte) []byte {
+	checkInitialized(v)
+
+	var zInv, x, y field.Element
+	zInv.Invert(&v.z)       // zInv = 1 / Z
+	x.Multiply(&v.x, &zInv) // x = X / Z
+	y.Multiply(&v.y, &zInv) // y = Y / Z
+
+	out := copyFieldElement(buf, &y)
+	out[31] |= byte(x.IsNegative() << 7)
+	return out
+}
+
+var feOne = new(field.Element).One()
+
+// SetBytes sets v = x, where x is a 32-byte encoding of v. If x does not
+// represent a valid point on the curve, SetBytes returns nil and an error and
+// the receiver is unchanged. Otherwise, SetBytes returns v.
+//
+// Note that SetBytes accepts all non-canonical encodings of valid points.
+// That is, it follows decoding rules that match most implementations in
+// the ecosystem rather than RFC 8032.
+func (v *Point) SetBytes(x []byte) (*Point, error) {
+	// Specifically, the non-canonical encodings that are accepted are
+	//   1) the ones where the field element is not reduced (see the
+	//      (*field.Element).SetBytes docs) and
+	//   2) the ones where the x-coordinate is zero and the sign bit is set.
+	//
+	// This is consistent with crypto/ed25519/internal/edwards25519. Read more
+	// at https://hdevalence.ca/blog/2020-10-04-its-25519am, specifically the
+	// "Canonical A, R" section.
+
+	y, err := new(field.Element).SetBytes(x)
+	if err != nil {
+		return nil, errors.New("edwards25519: invalid point encoding length")
+	}
+
+	// -x² + y² = 1 + dx²y²
+	// x² + dx²y² = x²(dy² + 1) = y² - 1
+	// x² = (y² - 1) / (dy² + 1)
+
+	// u = y² - 1
+	y2 := new(field.Element).Square(y)
+	u := new(field.Element).Subtract(y2, feOne)
+
+	// v = dy² + 1
+	vv := new(field.Element).Multiply(y2, d)
+	vv = vv.Add(vv, feOne)
+
+	// x = +√(u/v)
+	xx, wasSquare := new(field.Element).SqrtRatio(u, vv)
+	if wasSquare == 0 {
+		return nil, errors.New("edwards25519: invalid point encoding")
+	}
+
+	// Select the negative square root if the sign bit is set.
+	xxNeg := new(field.Element).Negate(xx)
+	xx = xx.Select(xxNeg, xx, int(x[31]>>7))
+
+	v.x.Set(xx)
+	v.y.Set(y)
+	v.z.One()
+	v.t.Multiply(xx, y) // xy = T / Z
+
+	return v, nil
+}
+
+func copyFieldElement(buf *[32]byte, v *field.Element) []byte {
+	copy(buf[:], v.Bytes())
+	return buf[:]
+}
+
+// Conversions.
+
+func (v *projP2) FromP1xP1(p *projP1xP1) *projP2 {
+	v.X.Multiply(&p.X, &p.T)
+	v.Y.Multiply(&p.Y, &p.Z)
+	v.Z.Multiply(&p.Z, &p.T)
+	return v
+}
+
+func (v *projP2) FromP3(p *Point) *projP2 {
+	v.X.Set(&p.x)
+	v.Y.Set(&p.y)
+	v.Z.Set(&p.z)
+	return v
+}
+
+func (v *Point) fromP1xP1(p *projP1xP1) *Point {
+	v.x.Multiply(&p.X, &p.T)
+	v.y.Multiply(&p.Y, &p.Z)
+	v.z.Multiply(&p.Z, &p.T)
+	v.t.Multiply(&p.X, &p.Y)
+	return v
+}
+
+func (v *Point) fromP2(p *projP2) *Point {
+	v.x.Multiply(&p.X, &p.Z)
+	v.y.Multiply(&p.Y, &p.Z)
+	v.z.Square(&p.Z)
+	v.t.Multiply(&p.X, &p.Y)
+	return v
+}
+
+// d is a constant in the curve equation.
+var d, _ = new(field.Element).SetBytes([]byte{
+	0xa3, 0x78, 0x59, 0x13, 0xca, 0x4d, 0xeb, 0x75,
+	0xab, 0xd8, 0x41, 0x41, 0x4d, 0x0a, 0x70, 0x00,
+	0x98, 0xe8, 0x79, 0x77, 0x79, 0x40, 0xc7, 0x8c,
+	0x73, 0xfe, 0x6f, 0x2b, 0xee, 0x6c, 0x03, 0x52})
+var d2 = new(field.Element).Add(d, d)
+
+func (v *projCached) FromP3(p *Point) *projCached {
+	v.YplusX.Add(&p.y, &p.x)
+	v.YminusX.Subtract(&p.y, &p.x)
+	v.Z.Set(&p.z)
+	v.T2d.Multiply(&p.t, d2)
+	return v
+}
+
+func (v *affineCached) FromP3(p *Point) *affineCached {
+	v.YplusX.Add(&p.y, &p.x)
+	v.YminusX.Subtract(&p.y, &p.x)
+	v.T2d.Multiply(&p.t, d2)
+
+	var invZ field.Element
+	invZ.Invert(&p.z)
+	v.YplusX.Multiply(&v.YplusX, &invZ)
+	v.YminusX.Multiply(&v.YminusX, &invZ)
+	v.T2d.Multiply(&v.T2d, &invZ)
+	return v
+}
+
+// (Re)addition and subtraction.
+
+// Add sets v = p + q, and returns v.
+func (v *Point) Add(p, q *Point) *Point {
+	checkInitialized(p, q)
+	qCached := new(projCached).FromP3(q)
+	result := new(projP1xP1).Add(p, qCached)
+	return v.fromP1xP1(result)
+}
+
+// Subtract sets v = p - q, and returns v.
+func (v *Point) Subtract(p, q *Point) *Point {
+	checkInitialized(p, q)
+	qCached := new(projCached).FromP3(q)
+	result := new(projP1xP1).Sub(p, qCached)
+	return v.fromP1xP1(result)
+}
+
+func (v *projP1xP1) Add(p *Point, q *projCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, ZZ2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YplusX)
+	MM.Multiply(&YminusX, &q.YminusX)
+	TT2d.Multiply(&p.t, &q.T2d)
+	ZZ2.Multiply(&p.z, &q.Z)
+
+	ZZ2.Add(&ZZ2, &ZZ2)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Add(&ZZ2, &TT2d)
+	v.T.Subtract(&ZZ2, &TT2d)
+	return v
+}
+
+func (v *projP1xP1) Sub(p *Point, q *projCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, ZZ2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YminusX) // flipped sign
+	MM.Multiply(&YminusX, &q.YplusX) // flipped sign
+	TT2d.Multiply(&p.t, &q.T2d)
+	ZZ2.Multiply(&p.z, &q.Z)
+
+	ZZ2.Add(&ZZ2, &ZZ2)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Subtract(&ZZ2, &TT2d) // flipped sign
+	v.T.Add(&ZZ2, &TT2d)      // flipped sign
+	return v
+}
+
+func (v *projP1xP1) AddAffine(p *Point, q *affineCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, Z2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YplusX)
+	MM.Multiply(&YminusX, &q.YminusX)
+	TT2d.Multiply(&p.t, &q.T2d)
+
+	Z2.Add(&p.z, &p.z)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Add(&Z2, &TT2d)
+	v.T.Subtract(&Z2, &TT2d)
+	return v
+}
+
+func (v *projP1xP1) SubAffine(p *Point, q *affineCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, Z2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YminusX) // flipped sign
+	MM.Multiply(&YminusX, &q.YplusX) // flipped sign
+	TT2d.Multiply(&p.t, &q.T2d)
+
+	Z2.Add(&p.z, &p.z)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Subtract(&Z2, &TT2d) // flipped sign
+	v.T.Add(&Z2, &TT2d)      // flipped sign
+	return v
+}
+
+// Doubling.
+
+func (v *projP1xP1) Double(p *projP2) *projP1xP1 {
+	var XX, YY, ZZ2, XplusYsq field.Element
+
+	XX.Square(&p.X)
+	YY.Square(&p.Y)
+	ZZ2.Square(&p.Z)
+	ZZ2.Add(&ZZ2, &ZZ2)
+	XplusYsq.Add(&p.X, &p.Y)
+	XplusYsq.Square(&XplusYsq)
+
+	v.Y.Add(&YY, &XX)
+	v.Z.Subtract(&YY, &XX)
+
+	v.X.Subtract(&XplusYsq, &v.Y)
+	v.T.Subtract(&ZZ2, &v.Z)
+	return v
+}
+
+// Negation.
+
+// Negate sets v = -p, and returns v.
+func (v *Point) Negate(p *Point) *Point {
+	checkInitialized(p)
+	v.x.Negate(&p.x)
+	v.y.Set(&p.y)
+	v.z.Set(&p.z)
+	v.t.Negate(&p.t)
+	return v
+}
+
+// Equal returns 1 if v is equivalent to u, and 0 otherwise.
+func (v *Point) Equal(u *Point) int {
+	checkInitialized(v, u)
+
+	var t1, t2, t3, t4 field.Element
+	t1.Multiply(&v.x, &u.z)
+	t2.Multiply(&u.x, &v.z)
+	t3.Multiply(&v.y, &u.z)
+	t4.Multiply(&u.y, &v.z)
+
+	return t1.Equal(&t2) & t3.Equal(&t4)
+}
+
+// Constant-time operations
+
+// Select sets v to a if cond == 1 and to b if cond == 0.
+func (v *projCached) Select(a, b *projCached, cond int) *projCached {
+	v.YplusX.Select(&a.YplusX, &b.YplusX, cond)
+	v.YminusX.Select(&a.YminusX, &b.YminusX, cond)
+	v.Z.Select(&a.Z, &b.Z, cond)
+	v.T2d.Select(&a.T2d, &b.T2d, cond)
+	return v
+}
+
+// Select sets v to a if cond == 1 and to b if cond == 0.
+func (v *affineCached) Select(a, b *affineCached, cond int) *affineCached {
+	v.YplusX.Select(&a.YplusX, &b.YplusX, cond)
+	v.YminusX.Select(&a.YminusX, &b.YminusX, cond)
+	v.T2d.Select(&a.T2d, &b.T2d, cond)
+	return v
+}
+
+// CondNeg negates v if cond == 1 and leaves it unchanged if cond == 0.
+func (v *projCached) CondNeg(cond int) *projCached {
+	v.YplusX.Swap(&v.YminusX, cond)
+	v.T2d.Select(new(field.Element).Negate(&v.T2d), &v.T2d, cond)
+	return v
+}
+
+// CondNeg negates v if cond == 1 and leaves it unchanged if cond == 0.
+func (v *affineCached) CondNeg(cond int) *affineCached {
+	v.YplusX.Swap(&v.YminusX, cond)
+	v.T2d.Select(new(field.Element).Negate(&v.T2d), &v.T2d, cond)
+	return v
+}

vendor/filippo.io/edwards25519/extra.go

@@ -0,0 +1,343 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+// This file contains additional functionality that is not included in the
+// upstream crypto/ed25519/internal/edwards25519 package.
+
+import (
+	"errors"
+
+	"filippo.io/edwards25519/field"
+)
+
+// ExtendedCoordinates returns v in extended coordinates (X:Y:Z:T) where
+// x = X/Z, y = Y/Z, and xy = T/Z as in https://eprint.iacr.org/2008/522.
+func (v *Point) ExtendedCoordinates() (X, Y, Z, T *field.Element) {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap. Don't change the style without making
+	// sure it doesn't increase the inliner cost.
+	var e [4]field.Element
+	X, Y, Z, T = v.extendedCoordinates(&e)
+	return
+}
+
+func (v *Point) extendedCoordinates(e *[4]field.Element) (X, Y, Z, T *field.Element) {
+	checkInitialized(v)
+	X = e[0].Set(&v.x)
+	Y = e[1].Set(&v.y)
+	Z = e[2].Set(&v.z)
+	T = e[3].Set(&v.t)
+	return
+}
+
+// SetExtendedCoordinates sets v = (X:Y:Z:T) in extended coordinates where
+// x = X/Z, y = Y/Z, and xy = T/Z as in https://eprint.iacr.org/2008/522.
+//
+// If the coordinates are invalid or don't represent a valid point on the curve,
+// SetExtendedCoordinates returns nil and an error and the receiver is
+// unchanged. Otherwise, SetExtendedCoordinates returns v.
+func (v *Point) SetExtendedCoordinates(X, Y, Z, T *field.Element) (*Point, error) {
+	if !isOnCurve(X, Y, Z, T) {
+		return nil, errors.New("edwards25519: invalid point coordinates")
+	}
+	v.x.Set(X)
+	v.y.Set(Y)
+	v.z.Set(Z)
+	v.t.Set(T)
+	return v, nil
+}
+
+func isOnCurve(X, Y, Z, T *field.Element) bool {
+	var lhs, rhs field.Element
+	XX := new(field.Element).Square(X)
+	YY := new(field.Element).Square(Y)
+	ZZ := new(field.Element).Square(Z)
+	TT := new(field.Element).Square(T)
+	// -x² + y² = 1 + dx²y²
+	// -(X/Z)² + (Y/Z)² = 1 + d(T/Z)²
+	// -X² + Y² = Z² + dT²
+	lhs.Subtract(YY, XX)
+	rhs.Multiply(d, TT).Add(&rhs, ZZ)
+	if lhs.Equal(&rhs) != 1 {
+		return false
+	}
+	// xy = T/Z
+	// XY/Z² = T/Z
+	// XY = TZ
+	lhs.Multiply(X, Y)
+	rhs.Multiply(T, Z)
+	return lhs.Equal(&rhs) == 1
+}
+
+// BytesMontgomery converts v to a point on the birationally-equivalent
+// Curve25519 Montgomery curve, and returns its canonical 32 bytes encoding
+// according to RFC 7748.
+//
+// Note that BytesMontgomery only encodes the u-coordinate, so v and -v encode
+// to the same value. If v is the identity point, BytesMontgomery returns 32
+// zero bytes, analogously to the X25519 function.
+func (v *Point) BytesMontgomery() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var buf [32]byte
+	return v.bytesMontgomery(&buf)
+}
+
+func (v *Point) bytesMontgomery(buf *[32]byte) []byte {
+	checkInitialized(v)
+
+	// RFC 7748, Section 4.1 provides the bilinear map to calculate the
+	// Montgomery u-coordinate
+	//
+	//              u = (1 + y) / (1 - y)
+	//
+	// where y = Y / Z.
+
+	var y, recip, u field.Element
+
+	y.Multiply(&v.y, y.Invert(&v.z))        // y = Y / Z
+	recip.Invert(recip.Subtract(feOne, &y)) // r = 1/(1 - y)
+	u.Multiply(u.Add(feOne, &y), &recip)    // u = (1 + y)*r
+
+	return copyFieldElement(buf, &u)
+}
+
+// MultByCofactor sets v = 8 * p, and returns v.
+func (v *Point) MultByCofactor(p *Point) *Point {
+	checkInitialized(p)
+	result := projP1xP1{}
+	pp := (&projP2{}).FromP3(p)
+	result.Double(pp)
+	pp.FromP1xP1(&result)
+	result.Double(pp)
+	pp.FromP1xP1(&result)
+	result.Double(pp)
+	return v.fromP1xP1(&result)
+}
+
+// Given k > 0, set s = s**(2*i).
+func (s *Scalar) pow2k(k int) {
+	for i := 0; i < k; i++ {
+		s.Multiply(s, s)
+	}
+}
+
+// Invert sets s to the inverse of a nonzero scalar v, and returns s.
+//
+// If t is zero, Invert returns zero.
+func (s *Scalar) Invert(t *Scalar) *Scalar {
+	// Uses a hardcoded sliding window of width 4.
+	var table [8]Scalar
+	var tt Scalar
+	tt.Multiply(t, t)
+	table[0] = *t
+	for i := 0; i < 7; i++ {
+		table[i+1].Multiply(&table[i], &tt)
+	}
+	// Now table = [t**1, t**3, t**7, t**11, t**13, t**15]
+	// so t**k = t[k/2] for odd k
+
+	// To compute the sliding window digits, use the following Sage script:
+
+	// sage: import itertools
+	// sage: def sliding_window(w,k):
+	// ....:     digits = []
+	// ....:     while k > 0:
+	// ....:         if k % 2 == 1:
+	// ....:             kmod = k % (2**w)
+	// ....:             digits.append(kmod)
+	// ....:             k = k - kmod
+	// ....:         else:
+	// ....:             digits.append(0)
+	// ....:         k = k // 2
+	// ....:     return digits
+
+	// Now we can compute s roughly as follows:
+
+	// sage: s = 1
+	// sage: for coeff in reversed(sliding_window(4,l-2)):
+	// ....:     s = s*s
+	// ....:     if coeff > 0 :
+	// ....:         s = s*t**coeff
+
+	// This works on one bit at a time, with many runs of zeros.
+	// The digits can be collapsed into [(count, coeff)] as follows:
+
+	// sage: [(len(list(group)),d) for d,group in itertools.groupby(sliding_window(4,l-2))]
+
+	// Entries of the form (k, 0) turn into pow2k(k)
+	// Entries of the form (1, coeff) turn into a squaring and then a table lookup.
+	// We can fold the squaring into the previous pow2k(k) as pow2k(k+1).
+
+	*s = table[1/2]
+	s.pow2k(127 + 1)
+	s.Multiply(s, &table[1/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[11/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[13/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[5/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[1/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[11/2])
+	s.pow2k(5 + 1)
+	s.Multiply(s, &table[11/2])
+	s.pow2k(9 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[13/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[11/2])
+
+	return s
+}
+
+// MultiScalarMult sets v = sum(scalars[i] * points[i]), and returns v.
+//
+// Execution time depends only on the lengths of the two slices, which must match.
+func (v *Point) MultiScalarMult(scalars []*Scalar, points []*Point) *Point {
+	if len(scalars) != len(points) {
+		panic("edwards25519: called MultiScalarMult with different size inputs")
+	}
+	checkInitialized(points...)
+
+	// Proceed as in the single-base case, but share doublings
+	// between each point in the multiscalar equation.
+
+	// Build lookup tables for each point
+	tables := make([]projLookupTable, len(points))
+	for i := range tables {
+		tables[i].FromP3(points[i])
+	}
+	// Compute signed radix-16 digits for each scalar
+	digits := make([][64]int8, len(scalars))
+	for i := range digits {
+		digits[i] = scalars[i].signedRadix16()
+	}
+
+	// Unwrap first loop iteration to save computing 16*identity
+	multiple := &projCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	// Lookup-and-add the appropriate multiple of each input point
+	for j := range tables {
+		tables[j].SelectInto(multiple, digits[j][63])
+		tmp1.Add(v, multiple) // tmp1 = v + x_(j,63)*Q in P1xP1 coords
+		v.fromP1xP1(tmp1)     // update v
+	}
+	tmp2.FromP3(v) // set up tmp2 = v in P2 coords for next iteration
+	for i := 62; i >= 0; i-- {
+		tmp1.Double(tmp2)    // tmp1 =  2*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  2*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  4*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  4*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  8*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  8*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 = 16*(prev) in P1xP1 coords
+		v.fromP1xP1(tmp1)    //    v = 16*(prev) in P3 coords
+		// Lookup-and-add the appropriate multiple of each input point
+		for j := range tables {
+			tables[j].SelectInto(multiple, digits[j][i])
+			tmp1.Add(v, multiple) // tmp1 = v + x_(j,i)*Q in P1xP1 coords
+			v.fromP1xP1(tmp1)     // update v
+		}
+		tmp2.FromP3(v) // set up tmp2 = v in P2 coords for next iteration
+	}
+	return v
+}
+
+// VarTimeMultiScalarMult sets v = sum(scalars[i] * points[i]), and returns v.
+//
+// Execution time depends on the inputs.
+func (v *Point) VarTimeMultiScalarMult(scalars []*Scalar, points []*Point) *Point {
+	if len(scalars) != len(points) {
+		panic("edwards25519: called VarTimeMultiScalarMult with different size inputs")
+	}
+	checkInitialized(points...)
+
+	// Generalize double-base NAF computation to arbitrary sizes.
+	// Here all the points are dynamic, so we only use the smaller
+	// tables.
+
+	// Build lookup tables for each point
+	tables := make([]nafLookupTable5, len(points))
+	for i := range tables {
+		tables[i].FromP3(points[i])
+	}
+	// Compute a NAF for each scalar
+	nafs := make([][256]int8, len(scalars))
+	for i := range nafs {
+		nafs[i] = scalars[i].nonAdjacentForm(5)
+	}
+
+	multiple := &projCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	tmp2.Zero()
+
+	// Move from high to low bits, doubling the accumulator
+	// at each iteration and checking whether there is a nonzero
+	// coefficient to look up a multiple of.
+	//
+	// Skip trying to find the first nonzero coefficent, because
+	// searching might be more work than a few extra doublings.
+	for i := 255; i >= 0; i-- {
+		tmp1.Double(tmp2)
+
+		for j := range nafs {
+			if nafs[j][i] > 0 {
+				v.fromP1xP1(tmp1)
+				tables[j].SelectInto(multiple, nafs[j][i])
+				tmp1.Add(v, multiple)
+			} else if nafs[j][i] < 0 {
+				v.fromP1xP1(tmp1)
+				tables[j].SelectInto(multiple, -nafs[j][i])
+				tmp1.Sub(v, multiple)
+			}
+		}
+
+		tmp2.FromP1xP1(tmp1)
+	}
+
+	v.fromP2(tmp2)
+	return v
+}

vendor/filippo.io/edwards25519/field/fe.go

@@ -0,0 +1,419 @@
+// Copyright (c) 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package field implements fast arithmetic modulo 2^255-19.
+package field
+
+import (
+	"crypto/subtle"
+	"encoding/binary"
+	"errors"
+	"math/bits"
+)
+
+// Element represents an element of the field GF(2^255-19). Note that this
+// is not a cryptographically secure group, and should only be used to interact
+// with edwards25519.Point coordinates.
+//
+// This type works similarly to math/big.Int, and all arguments and receivers
+// are allowed to alias.
+//
+// The zero value is a valid zero element.
+type Element struct {
+	// An element t represents the integer
+	//     t.l0 + t.l1*2^51 + t.l2*2^102 + t.l3*2^153 + t.l4*2^204
+	//
+	// Between operations, all limbs are expected to be lower than 2^52.
+	l0 uint64
+	l1 uint64
+	l2 uint64
+	l3 uint64
+	l4 uint64
+}
+
+const maskLow51Bits uint64 = (1 << 51) - 1
+
+var feZero = &Element{0, 0, 0, 0, 0}
+
+// Zero sets v = 0, and returns v.
+func (v *Element) Zero() *Element {
+	*v = *feZero
+	return v
+}
+
+var feOne = &Element{1, 0, 0, 0, 0}
+
+// One sets v = 1, and returns v.
+func (v *Element) One() *Element {
+	*v = *feOne
+	return v
+}
+
+// reduce reduces v modulo 2^255 - 19 and returns it.
+func (v *Element) reduce() *Element {
+	v.carryPropagate()
+
+	// After the light reduction we now have a field element representation
+	// v < 2^255 + 2^13 * 19, but need v < 2^255 - 19.
+
+	// If v >= 2^255 - 19, then v + 19 >= 2^255, which would overflow 2^255 - 1,
+	// generating a carry. That is, c will be 0 if v < 2^255 - 19, and 1 otherwise.
+	c := (v.l0 + 19) >> 51
+	c = (v.l1 + c) >> 51
+	c = (v.l2 + c) >> 51
+	c = (v.l3 + c) >> 51
+	c = (v.l4 + c) >> 51
+
+	// If v < 2^255 - 19 and c = 0, this will be a no-op. Otherwise, it's
+	// effectively applying the reduction identity to the carry.
+	v.l0 += 19 * c
+
+	v.l1 += v.l0 >> 51
+	v.l0 = v.l0 & maskLow51Bits
+	v.l2 += v.l1 >> 51
+	v.l1 = v.l1 & maskLow51Bits
+	v.l3 += v.l2 >> 51
+	v.l2 = v.l2 & maskLow51Bits
+	v.l4 += v.l3 >> 51
+	v.l3 = v.l3 & maskLow51Bits
+	// no additional carry
+	v.l4 = v.l4 & maskLow51Bits
+
+	return v
+}
+
+// Add sets v = a + b, and returns v.
+func (v *Element) Add(a, b *Element) *Element {
+	v.l0 = a.l0 + b.l0
+	v.l1 = a.l1 + b.l1
+	v.l2 = a.l2 + b.l2
+	v.l3 = a.l3 + b.l3
+	v.l4 = a.l4 + b.l4
+	// Using the generic implementation here is actually faster than the
+	// assembly. Probably because the body of this function is so simple that
+	// the compiler can figure out better optimizations by inlining the carry
+	// propagation.
+	return v.carryPropagateGeneric()
+}
+
+// Subtract sets v = a - b, and returns v.
+func (v *Element) Subtract(a, b *Element) *Element {
+	// We first add 2 * p, to guarantee the subtraction won't underflow, and
+	// then subtract b (which can be up to 2^255 + 2^13 * 19).
+	v.l0 = (a.l0 + 0xFFFFFFFFFFFDA) - b.l0
+	v.l1 = (a.l1 + 0xFFFFFFFFFFFFE) - b.l1
+	v.l2 = (a.l2 + 0xFFFFFFFFFFFFE) - b.l2
+	v.l3 = (a.l3 + 0xFFFFFFFFFFFFE) - b.l3
+	v.l4 = (a.l4 + 0xFFFFFFFFFFFFE) - b.l4
+	return v.carryPropagate()
+}
+
+// Negate sets v = -a, and returns v.
+func (v *Element) Negate(a *Element) *Element {
+	return v.Subtract(feZero, a)
+}
+
+// Invert sets v = 1/z mod p, and returns v.
+//
+// If z == 0, Invert returns v = 0.
+func (v *Element) Invert(z *Element) *Element {
+	// Inversion is implemented as exponentiation with exponent p − 2. It uses the
+	// same sequence of 255 squarings and 11 multiplications as [Curve25519].
+	var z2, z9, z11, z2_5_0, z2_10_0, z2_20_0, z2_50_0, z2_100_0, t Element
+
+	z2.Square(z)             // 2
+	t.Square(&z2)            // 4
+	t.Square(&t)             // 8
+	z9.Multiply(&t, z)       // 9
+	z11.Multiply(&z9, &z2)   // 11
+	t.Square(&z11)           // 22
+	z2_5_0.Multiply(&t, &z9) // 31 = 2^5 - 2^0
+
+	t.Square(&z2_5_0) // 2^6 - 2^1
+	for i := 0; i < 4; i++ {
+		t.Square(&t) // 2^10 - 2^5
+	}
+	z2_10_0.Multiply(&t, &z2_5_0) // 2^10 - 2^0
+
+	t.Square(&z2_10_0) // 2^11 - 2^1
+	for i := 0; i < 9; i++ {
+		t.Square(&t) // 2^20 - 2^10
+	}
+	z2_20_0.Multiply(&t, &z2_10_0) // 2^20 - 2^0
+
+	t.Square(&z2_20_0) // 2^21 - 2^1
+	for i := 0; i < 19; i++ {
+		t.Square(&t) // 2^40 - 2^20
+	}
+	t.Multiply(&t, &z2_20_0) // 2^40 - 2^0
+
+	t.Square(&t) // 2^41 - 2^1
+	for i := 0; i < 9; i++ {
+		t.Square(&t) // 2^50 - 2^10
+	}
+	z2_50_0.Multiply(&t, &z2_10_0) // 2^50 - 2^0
+
+	t.Square(&z2_50_0) // 2^51 - 2^1
+	for i := 0; i < 49; i++ {
+		t.Square(&t) // 2^100 - 2^50
+	}
+	z2_100_0.Multiply(&t, &z2_50_0) // 2^100 - 2^0
+
+	t.Square(&z2_100_0) // 2^101 - 2^1
+	for i := 0; i < 99; i++ {
+		t.Square(&t) // 2^200 - 2^100
+	}
+	t.Multiply(&t, &z2_100_0) // 2^200 - 2^0
+
+	t.Square(&t) // 2^201 - 2^1
+	for i := 0; i < 49; i++ {
+		t.Square(&t) // 2^250 - 2^50
+	}
+	t.Multiply(&t, &z2_50_0) // 2^250 - 2^0
+
+	t.Square(&t) // 2^251 - 2^1
+	t.Square(&t) // 2^252 - 2^2
+	t.Square(&t) // 2^253 - 2^3
+	t.Square(&t) // 2^254 - 2^4
+	t.Square(&t) // 2^255 - 2^5
+
+	return v.Multiply(&t, &z11) // 2^255 - 21
+}
+
+// Set sets v = a, and returns v.
+func (v *Element) Set(a *Element) *Element {
+	*v = *a
+	return v
+}
+
+// SetBytes sets v to x, where x is a 32-byte little-endian encoding. If x is
+// not of the right length, SetUniformBytes returns nil and an error, and the
+// receiver is unchanged.
+//
+// Consistent with RFC 7748, the most significant bit (the high bit of the
+// last byte) is ignored, and non-canonical values (2^255-19 through 2^255-1)
+// are accepted. Note that this is laxer than specified by RFC 8032.
+func (v *Element) SetBytes(x []byte) (*Element, error) {
+	if len(x) != 32 {
+		return nil, errors.New("edwards25519: invalid field element input size")
+	}
+
+	// Bits 0:51 (bytes 0:8, bits 0:64, shift 0, mask 51).
+	v.l0 = binary.LittleEndian.Uint64(x[0:8])
+	v.l0 &= maskLow51Bits
+	// Bits 51:102 (bytes 6:14, bits 48:112, shift 3, mask 51).
+	v.l1 = binary.LittleEndian.Uint64(x[6:14]) >> 3
+	v.l1 &= maskLow51Bits
+	// Bits 102:153 (bytes 12:20, bits 96:160, shift 6, mask 51).
+	v.l2 = binary.LittleEndian.Uint64(x[12:20]) >> 6
+	v.l2 &= maskLow51Bits
+	// Bits 153:204 (bytes 19:27, bits 152:216, shift 1, mask 51).
+	v.l3 = binary.LittleEndian.Uint64(x[19:27]) >> 1
+	v.l3 &= maskLow51Bits
+	// Bits 204:251 (bytes 24:32, bits 192:256, shift 12, mask 51).
+	// Note: not bytes 25:33, shift 4, to avoid overread.
+	v.l4 = binary.LittleEndian.Uint64(x[24:32]) >> 12
+	v.l4 &= maskLow51Bits
+
+	return v, nil
+}
+
+// Bytes returns the canonical 32-byte little-endian encoding of v.
+func (v *Element) Bytes() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var out [32]byte
+	return v.bytes(&out)
+}
+
+func (v *Element) bytes(out *[32]byte) []byte {
+	t := *v
+	t.reduce()
+
+	var buf [8]byte
+	for i, l := range [5]uint64{t.l0, t.l1, t.l2, t.l3, t.l4} {
+		bitsOffset := i * 51
+		binary.LittleEndian.PutUint64(buf[:], l<<uint(bitsOffset%8))
+		for i, bb := range buf {
+			off := bitsOffset/8 + i
+			if off >= len(out) {
+				break
+			}
+			out[off] |= bb
+		}
+	}
+
+	return out[:]
+}
+
+// Equal returns 1 if v and u are equal, and 0 otherwise.
+func (v *Element) Equal(u *Element) int {
+	sa, sv := u.Bytes(), v.Bytes()
+	return subtle.ConstantTimeCompare(sa, sv)
+}
+
+// mask64Bits returns 0xffffffff if cond is 1, and 0 otherwise.
+func mask64Bits(cond int) uint64 { return ^(uint64(cond) - 1) }
+
+// Select sets v to a if cond == 1, and to b if cond == 0.
+func (v *Element) Select(a, b *Element, cond int) *Element {
+	m := mask64Bits(cond)
+	v.l0 = (m & a.l0) | (^m & b.l0)
+	v.l1 = (m & a.l1) | (^m & b.l1)
+	v.l2 = (m & a.l2) | (^m & b.l2)
+	v.l3 = (m & a.l3) | (^m & b.l3)
+	v.l4 = (m & a.l4) | (^m & b.l4)
+	return v
+}
+
+// Swap swaps v and u if cond == 1 or leaves them unchanged if cond == 0, and returns v.
+func (v *Element) Swap(u *Element, cond int) {
+	m := mask64Bits(cond)
+	t := m & (v.l0 ^ u.l0)
+	v.l0 ^= t
+	u.l0 ^= t
+	t = m & (v.l1 ^ u.l1)
+	v.l1 ^= t
+	u.l1 ^= t
+	t = m & (v.l2 ^ u.l2)
+	v.l2 ^= t
+	u.l2 ^= t
+	t = m & (v.l3 ^ u.l3)
+	v.l3 ^= t
+	u.l3 ^= t
+	t = m & (v.l4 ^ u.l4)
+	v.l4 ^= t
+	u.l4 ^= t
+}
+
+// IsNegative returns 1 if v is negative, and 0 otherwise.
+func (v *Element) IsNegative() int {
+	return int(v.Bytes()[0] & 1)
+}
+
+// Absolute sets v to |u|, and returns v.
+func (v *Element) Absolute(u *Element) *Element {
+	return v.Select(new(Element).Negate(u), u, u.IsNegative())
+}
+
+// Multiply sets v = x * y, and returns v.
+func (v *Element) Multiply(x, y *Element) *Element {
+	feMul(v, x, y)
+	return v
+}
+
+// Square sets v = x * x, and returns v.
+func (v *Element) Square(x *Element) *Element {
+	feSquare(v, x)
+	return v
+}
+
+// Mult32 sets v = x * y, and returns v.
+func (v *Element) Mult32(x *Element, y uint32) *Element {
+	x0lo, x0hi := mul51(x.l0, y)
+	x1lo, x1hi := mul51(x.l1, y)
+	x2lo, x2hi := mul51(x.l2, y)
+	x3lo, x3hi := mul51(x.l3, y)
+	x4lo, x4hi := mul51(x.l4, y)
+	v.l0 = x0lo + 19*x4hi // carried over per the reduction identity
+	v.l1 = x1lo + x0hi
+	v.l2 = x2lo + x1hi
+	v.l3 = x3lo + x2hi
+	v.l4 = x4lo + x3hi
+	// The hi portions are going to be only 32 bits, plus any previous excess,
+	// so we can skip the carry propagation.
+	return v
+}
+
+// mul51 returns lo + hi * 2⁵¹ = a * b.
+func mul51(a uint64, b uint32) (lo uint64, hi uint64) {
+	mh, ml := bits.Mul64(a, uint64(b))
+	lo = ml & maskLow51Bits
+	hi = (mh << 13) | (ml >> 51)
+	return
+}
+
+// Pow22523 set v = x^((p-5)/8), and returns v. (p-5)/8 is 2^252-3.
+func (v *Element) Pow22523(x *Element) *Element {
+	var t0, t1, t2 Element
+
+	t0.Square(x)             // x^2
+	t1.Square(&t0)           // x^4
+	t1.Square(&t1)           // x^8
+	t1.Multiply(x, &t1)      // x^9
+	t0.Multiply(&t0, &t1)    // x^11
+	t0.Square(&t0)           // x^22
+	t0.Multiply(&t1, &t0)    // x^31
+	t1.Square(&t0)           // x^62
+	for i := 1; i < 5; i++ { // x^992
+		t1.Square(&t1)
+	}
+	t0.Multiply(&t1, &t0)     // x^1023 -> 1023 = 2^10 - 1
+	t1.Square(&t0)            // 2^11 - 2
+	for i := 1; i < 10; i++ { // 2^20 - 2^10
+		t1.Square(&t1)
+	}
+	t1.Multiply(&t1, &t0)     // 2^20 - 1
+	t2.Square(&t1)            // 2^21 - 2
+	for i := 1; i < 20; i++ { // 2^40 - 2^20
+		t2.Square(&t2)
+	}
+	t1.Multiply(&t2, &t1)     // 2^40 - 1
+	t1.Square(&t1)            // 2^41 - 2
+	for i := 1; i < 10; i++ { // 2^50 - 2^10
+		t1.Square(&t1)
+	}
+	t0.Multiply(&t1, &t0)     // 2^50 - 1
+	t1.Square(&t0)            // 2^51 - 2
+	for i := 1; i < 50; i++ { // 2^100 - 2^50
+		t1.Square(&t1)
+	}
+	t1.Multiply(&t1, &t0)      // 2^100 - 1
+	t2.Square(&t1)             // 2^101 - 2
+	for i := 1; i < 100; i++ { // 2^200 - 2^100
+		t2.Square(&t2)
+	}
+	t1.Multiply(&t2, &t1)     // 2^200 - 1
+	t1.Square(&t1)            // 2^201 - 2
+	for i := 1; i < 50; i++ { // 2^250 - 2^50
+		t1.Square(&t1)
+	}
+	t0.Multiply(&t1, &t0)     // 2^250 - 1
+	t0.Square(&t0)            // 2^251 - 2
+	t0.Square(&t0)            // 2^252 - 4
+	return v.Multiply(&t0, x) // 2^252 - 3 -> x^(2^252-3)
+}
+
+// sqrtM1 is 2^((p-1)/4), which squared is equal to -1 by Euler's Criterion.
+var sqrtM1 = &Element{1718705420411056, 234908883556509,
+	2233514472574048, 2117202627021982, 765476049583133}
+
+// SqrtRatio sets r to the non-negative square root of the ratio of u and v.
+//
+// If u/v is square, SqrtRatio returns r and 1. If u/v is not square, SqrtRatio
+// sets r according to Section 4.3 of draft-irtf-cfrg-ristretto255-decaf448-00,
+// and returns r and 0.
+func (r *Element) SqrtRatio(u, v *Element) (rr *Element, wasSquare int) {
+	var a, b Element
+
+	// r = (u * v3) * (u * v7)^((p-5)/8)
+	v2 := a.Square(v)
+	uv3 := b.Multiply(u, b.Multiply(v2, v))
+	uv7 := a.Multiply(uv3, a.Square(v2))
+	r.Multiply(uv3, r.Pow22523(uv7))
+
+	check := a.Multiply(v, a.Square(r)) // check = v * r^2
+
+	uNeg := b.Negate(u)
+	correctSignSqrt := check.Equal(u)
+	flippedSignSqrt := check.Equal(uNeg)
+	flippedSignSqrtI := check.Equal(uNeg.Multiply(uNeg, sqrtM1))
+
+	rPrime := b.Multiply(r, sqrtM1) // r_prime = SQRT_M1 * r
+	// r = CT_SELECT(r_prime IF flipped_sign_sqrt | flipped_sign_sqrt_i ELSE r)
+	r.Select(rPrime, r, flippedSignSqrt|flippedSignSqrtI)
+
+	r.Absolute(r) // Choose the nonnegative square root.
+	return r, correctSignSqrt | flippedSignSqrt
+}

vendor/filippo.io/edwards25519/field/fe_amd64.go

@@ -0,0 +1,13 @@
+// Code generated by command: go run fe_amd64_asm.go -out ../fe_amd64.s -stubs ../fe_amd64.go -pkg field. DO NOT EDIT.
+
+// +build amd64,gc,!purego
+
+package field
+
+// feMul sets out = a * b. It works like feMulGeneric.
+//go:noescape
+func feMul(out *Element, a *Element, b *Element)
+
+// feSquare sets out = a * a. It works like feSquareGeneric.
+//go:noescape
+func feSquare(out *Element, a *Element)

vendor/filippo.io/edwards25519/field/fe_amd64.s

@@ -0,0 +1,378 @@
+// Code generated by command: go run fe_amd64_asm.go -out ../fe_amd64.s -stubs ../fe_amd64.go -pkg field. DO NOT EDIT.
+
+// +build amd64,gc,!purego
+
+#include "textflag.h"
+
+// func feMul(out *Element, a *Element, b *Element)
+TEXT ·feMul(SB), NOSPLIT, $0-24
+	MOVQ a+8(FP), CX
+	MOVQ b+16(FP), BX
+
+	// r0 = a0×b0
+	MOVQ (CX), AX
+	MULQ (BX)
+	MOVQ AX, DI
+	MOVQ DX, SI
+
+	// r0 += 19×a1×b4
+	MOVQ   8(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r0 += 19×a2×b3
+	MOVQ   16(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r0 += 19×a3×b2
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   16(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r0 += 19×a4×b1
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   8(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r1 = a0×b1
+	MOVQ (CX), AX
+	MULQ 8(BX)
+	MOVQ AX, R9
+	MOVQ DX, R8
+
+	// r1 += a1×b0
+	MOVQ 8(CX), AX
+	MULQ (BX)
+	ADDQ AX, R9
+	ADCQ DX, R8
+
+	// r1 += 19×a2×b4
+	MOVQ   16(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, R9
+	ADCQ   DX, R8
+
+	// r1 += 19×a3×b3
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(BX)
+	ADDQ   AX, R9
+	ADCQ   DX, R8
+
+	// r1 += 19×a4×b2
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   16(BX)
+	ADDQ   AX, R9
+	ADCQ   DX, R8
+
+	// r2 = a0×b2
+	MOVQ (CX), AX
+	MULQ 16(BX)
+	MOVQ AX, R11
+	MOVQ DX, R10
+
+	// r2 += a1×b1
+	MOVQ 8(CX), AX
+	MULQ 8(BX)
+	ADDQ AX, R11
+	ADCQ DX, R10
+
+	// r2 += a2×b0
+	MOVQ 16(CX), AX
+	MULQ (BX)
+	ADDQ AX, R11
+	ADCQ DX, R10
+
+	// r2 += 19×a3×b4
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, R11
+	ADCQ   DX, R10
+
+	// r2 += 19×a4×b3
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(BX)
+	ADDQ   AX, R11
+	ADCQ   DX, R10
+
+	// r3 = a0×b3
+	MOVQ (CX), AX
+	MULQ 24(BX)
+	MOVQ AX, R13
+	MOVQ DX, R12
+
+	// r3 += a1×b2
+	MOVQ 8(CX), AX
+	MULQ 16(BX)
+	ADDQ AX, R13
+	ADCQ DX, R12
+
+	// r3 += a2×b1
+	MOVQ 16(CX), AX
+	MULQ 8(BX)
+	ADDQ AX, R13
+	ADCQ DX, R12
+
+	// r3 += a3×b0
+	MOVQ 24(CX), AX
+	MULQ (BX)
+	ADDQ AX, R13
+	ADCQ DX, R12
+
+	// r3 += 19×a4×b4
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, R13
+	ADCQ   DX, R12
+
+	// r4 = a0×b4
+	MOVQ (CX), AX
+	MULQ 32(BX)
+	MOVQ AX, R15
+	MOVQ DX, R14
+
+	// r4 += a1×b3
+	MOVQ 8(CX), AX
+	MULQ 24(BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// r4 += a2×b2
+	MOVQ 16(CX), AX
+	MULQ 16(BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// r4 += a3×b1
+	MOVQ 24(CX), AX
+	MULQ 8(BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// r4 += a4×b0
+	MOVQ 32(CX), AX
+	MULQ (BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// First reduction chain
+	MOVQ   $0x0007ffffffffffff, AX
+	SHLQ   $0x0d, DI, SI
+	SHLQ   $0x0d, R9, R8
+	SHLQ   $0x0d, R11, R10
+	SHLQ   $0x0d, R13, R12
+	SHLQ   $0x0d, R15, R14
+	ANDQ   AX, DI
+	IMUL3Q $0x13, R14, R14
+	ADDQ   R14, DI
+	ANDQ   AX, R9
+	ADDQ   SI, R9
+	ANDQ   AX, R11
+	ADDQ   R8, R11
+	ANDQ   AX, R13
+	ADDQ   R10, R13
+	ANDQ   AX, R15
+	ADDQ   R12, R15
+
+	// Second reduction chain (carryPropagate)
+	MOVQ   DI, SI
+	SHRQ   $0x33, SI
+	MOVQ   R9, R8
+	SHRQ   $0x33, R8
+	MOVQ   R11, R10
+	SHRQ   $0x33, R10
+	MOVQ   R13, R12
+	SHRQ   $0x33, R12
+	MOVQ   R15, R14
+	SHRQ   $0x33, R14
+	ANDQ   AX, DI
+	IMUL3Q $0x13, R14, R14
+	ADDQ   R14, DI
+	ANDQ   AX, R9
+	ADDQ   SI, R9
+	ANDQ   AX, R11
+	ADDQ   R8, R11
+	ANDQ   AX, R13
+	ADDQ   R10, R13
+	ANDQ   AX, R15
+	ADDQ   R12, R15
+
+	// Store output
+	MOVQ out+0(FP), AX
+	MOVQ DI, (AX)
+	MOVQ R9, 8(AX)
+	MOVQ R11, 16(AX)
+	MOVQ R13, 24(AX)
+	MOVQ R15, 32(AX)
+	RET
+
+// func feSquare(out *Element, a *Element)
+TEXT ·feSquare(SB), NOSPLIT, $0-16
+	MOVQ a+8(FP), CX
+
+	// r0 = l0×l0
+	MOVQ (CX), AX
+	MULQ (CX)
+	MOVQ AX, SI
+	MOVQ DX, BX
+
+	// r0 += 38×l1×l4
+	MOVQ   8(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, SI
+	ADCQ   DX, BX
+
+	// r0 += 38×l2×l3
+	MOVQ   16(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   24(CX)
+	ADDQ   AX, SI
+	ADCQ   DX, BX
+
+	// r1 = 2×l0×l1
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 8(CX)
+	MOVQ AX, R8
+	MOVQ DX, DI
+
+	// r1 += 38×l2×l4
+	MOVQ   16(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, R8
+	ADCQ   DX, DI
+
+	// r1 += 19×l3×l3
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(CX)
+	ADDQ   AX, R8
+	ADCQ   DX, DI
+
+	// r2 = 2×l0×l2
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 16(CX)
+	MOVQ AX, R10
+	MOVQ DX, R9
+
+	// r2 += l1×l1
+	MOVQ 8(CX), AX
+	MULQ 8(CX)
+	ADDQ AX, R10
+	ADCQ DX, R9
+
+	// r2 += 38×l3×l4
+	MOVQ   24(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, R10
+	ADCQ   DX, R9
+
+	// r3 = 2×l0×l3
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 24(CX)
+	MOVQ AX, R12
+	MOVQ DX, R11
+
+	// r3 += 2×l1×l2
+	MOVQ   8(CX), AX
+	IMUL3Q $0x02, AX, AX
+	MULQ   16(CX)
+	ADDQ   AX, R12
+	ADCQ   DX, R11
+
+	// r3 += 19×l4×l4
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, R12
+	ADCQ   DX, R11
+
+	// r4 = 2×l0×l4
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 32(CX)
+	MOVQ AX, R14
+	MOVQ DX, R13
+
+	// r4 += 2×l1×l3
+	MOVQ   8(CX), AX
+	IMUL3Q $0x02, AX, AX
+	MULQ   24(CX)
+	ADDQ   AX, R14
+	ADCQ   DX, R13
+
+	// r4 += l2×l2
+	MOVQ 16(CX), AX
+	MULQ 16(CX)
+	ADDQ AX, R14
+	ADCQ DX, R13
+
+	// First reduction chain
+	MOVQ   $0x0007ffffffffffff, AX
+	SHLQ   $0x0d, SI, BX
+	SHLQ   $0x0d, R8, DI
+	SHLQ   $0x0d, R10, R9
+	SHLQ   $0x0d, R12, R11
+	SHLQ   $0x0d, R14, R13
+	ANDQ   AX, SI
+	IMUL3Q $0x13, R13, R13
+	ADDQ   R13, SI
+	ANDQ   AX, R8
+	ADDQ   BX, R8
+	ANDQ   AX, R10
+	ADDQ   DI, R10
+	ANDQ   AX, R12
+	ADDQ   R9, R12
+	ANDQ   AX, R14
+	ADDQ   R11, R14
+
+	// Second reduction chain (carryPropagate)
+	MOVQ   SI, BX
+	SHRQ   $0x33, BX
+	MOVQ   R8, DI
+	SHRQ   $0x33, DI
+	MOVQ   R10, R9
+	SHRQ   $0x33, R9
+	MOVQ   R12, R11
+	SHRQ   $0x33, R11
+	MOVQ   R14, R13
+	SHRQ   $0x33, R13
+	ANDQ   AX, SI
+	IMUL3Q $0x13, R13, R13
+	ADDQ   R13, SI
+	ANDQ   AX, R8
+	ADDQ   BX, R8
+	ANDQ   AX, R10
+	ADDQ   DI, R10
+	ANDQ   AX, R12
+	ADDQ   R9, R12
+	ANDQ   AX, R14
+	ADDQ   R11, R14
+
+	// Store output
+	MOVQ out+0(FP), AX
+	MOVQ SI, (AX)
+	MOVQ R8, 8(AX)
+	MOVQ R10, 16(AX)
+	MOVQ R12, 24(AX)
+	MOVQ R14, 32(AX)
+	RET

vendor/filippo.io/edwards25519/field/fe_amd64_noasm.go

@@ -0,0 +1,12 @@
+// Copyright (c) 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !amd64 || !gc || purego
+// +build !amd64 !gc purego
+
+package field
+
+func feMul(v, x, y *Element) { feMulGeneric(v, x, y) }
+
+func feSquare(v, x *Element) { feSquareGeneric(v, x) }

vendor/filippo.io/edwards25519/field/fe_arm64.go

@@ -0,0 +1,16 @@
+// Copyright (c) 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build arm64 && gc && !purego
+// +build arm64,gc,!purego
+
+package field
+
+//go:noescape
+func carryPropagate(v *Element)
+
+func (v *Element) carryPropagate() *Element {
+	carryPropagate(v)
+	return v
+}

vendor/filippo.io/edwards25519/field/fe_arm64.s

@@ -0,0 +1,42 @@
+// Copyright (c) 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm64,gc,!purego
+
+#include "textflag.h"
+
+// carryPropagate works exactly like carryPropagateGeneric and uses the
+// same AND, ADD, and LSR+MADD instructions emitted by the compiler, but
+// avoids loading R0-R4 twice and uses LDP and STP.
+//
+// See https://golang.org/issues/43145 for the main compiler issue.
+//
+// func carryPropagate(v *Element)
+TEXT ·carryPropagate(SB),NOFRAME|NOSPLIT,$0-8
+	MOVD v+0(FP), R20
+
+	LDP 0(R20), (R0, R1)
+	LDP 16(R20), (R2, R3)
+	MOVD 32(R20), R4
+
+	AND $0x7ffffffffffff, R0, R10
+	AND $0x7ffffffffffff, R1, R11
+	AND $0x7ffffffffffff, R2, R12
+	AND $0x7ffffffffffff, R3, R13
+	AND $0x7ffffffffffff, R4, R14
+
+	ADD R0>>51, R11, R11
+	ADD R1>>51, R12, R12
+	ADD R2>>51, R13, R13
+	ADD R3>>51, R14, R14
+	// R4>>51 * 19 + R10 -> R10
+	LSR $51, R4, R21
+	MOVD $19, R22
+	MADD R22, R10, R21, R10
+
+	STP (R10, R11), 0(R20)
+	STP (R12, R13), 16(R20)
+	MOVD R14, 32(R20)
+
+	RET

vendor/filippo.io/edwards25519/field/fe_arm64_noasm.go

@@ -0,0 +1,12 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !arm64 || !gc || purego
+// +build !arm64 !gc purego
+
+package field
+
+func (v *Element) carryPropagate() *Element {
+	return v.carryPropagateGeneric()
+}

vendor/filippo.io/edwards25519/field/fe_generic.go

@@ -0,0 +1,264 @@
+// Copyright (c) 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package field
+
+import "math/bits"
+
+// uint128 holds a 128-bit number as two 64-bit limbs, for use with the
+// bits.Mul64 and bits.Add64 intrinsics.
+type uint128 struct {
+	lo, hi uint64
+}
+
+// mul64 returns a * b.
+func mul64(a, b uint64) uint128 {
+	hi, lo := bits.Mul64(a, b)
+	return uint128{lo, hi}
+}
+
+// addMul64 returns v + a * b.
+func addMul64(v uint128, a, b uint64) uint128 {
+	hi, lo := bits.Mul64(a, b)
+	lo, c := bits.Add64(lo, v.lo, 0)
+	hi, _ = bits.Add64(hi, v.hi, c)
+	return uint128{lo, hi}
+}
+
+// shiftRightBy51 returns a >> 51. a is assumed to be at most 115 bits.
+func shiftRightBy51(a uint128) uint64 {
+	return (a.hi << (64 - 51)) | (a.lo >> 51)
+}
+
+func feMulGeneric(v, a, b *Element) {
+	a0 := a.l0
+	a1 := a.l1
+	a2 := a.l2
+	a3 := a.l3
+	a4 := a.l4
+
+	b0 := b.l0
+	b1 := b.l1
+	b2 := b.l2
+	b3 := b.l3
+	b4 := b.l4
+
+	// Limb multiplication works like pen-and-paper columnar multiplication, but
+	// with 51-bit limbs instead of digits.
+	//
+	//                          a4   a3   a2   a1   a0  x
+	//                          b4   b3   b2   b1   b0  =
+	//                         ------------------------
+	//                        a4b0 a3b0 a2b0 a1b0 a0b0  +
+	//                   a4b1 a3b1 a2b1 a1b1 a0b1       +
+	//              a4b2 a3b2 a2b2 a1b2 a0b2            +
+	//         a4b3 a3b3 a2b3 a1b3 a0b3                 +
+	//    a4b4 a3b4 a2b4 a1b4 a0b4                      =
+	//   ----------------------------------------------
+	//      r8   r7   r6   r5   r4   r3   r2   r1   r0
+	//
+	// We can then use the reduction identity (a * 2²⁵⁵ + b = a * 19 + b) to
+	// reduce the limbs that would overflow 255 bits. r5 * 2²⁵⁵ becomes 19 * r5,
+	// r6 * 2³⁰⁶ becomes 19 * r6 * 2⁵¹, etc.
+	//
+	// Reduction can be carried out simultaneously to multiplication. For
+	// example, we do not compute r5: whenever the result of a multiplication
+	// belongs to r5, like a1b4, we multiply it by 19 and add the result to r0.
+	//
+	//            a4b0    a3b0    a2b0    a1b0    a0b0  +
+	//            a3b1    a2b1    a1b1    a0b1 19×a4b1  +
+	//            a2b2    a1b2    a0b2 19×a4b2 19×a3b2  +
+	//            a1b3    a0b3 19×a4b3 19×a3b3 19×a2b3  +
+	//            a0b4 19×a4b4 19×a3b4 19×a2b4 19×a1b4  =
+	//           --------------------------------------
+	//              r4      r3      r2      r1      r0
+	//
+	// Finally we add up the columns into wide, overlapping limbs.
+
+	a1_19 := a1 * 19
+	a2_19 := a2 * 19
+	a3_19 := a3 * 19
+	a4_19 := a4 * 19
+
+	// r0 = a0×b0 + 19×(a1×b4 + a2×b3 + a3×b2 + a4×b1)
+	r0 := mul64(a0, b0)
+	r0 = addMul64(r0, a1_19, b4)
+	r0 = addMul64(r0, a2_19, b3)
+	r0 = addMul64(r0, a3_19, b2)
+	r0 = addMul64(r0, a4_19, b1)
+
+	// r1 = a0×b1 + a1×b0 + 19×(a2×b4 + a3×b3 + a4×b2)
+	r1 := mul64(a0, b1)
+	r1 = addMul64(r1, a1, b0)
+	r1 = addMul64(r1, a2_19, b4)
+	r1 = addMul64(r1, a3_19, b3)
+	r1 = addMul64(r1, a4_19, b2)
+
+	// r2 = a0×b2 + a1×b1 + a2×b0 + 19×(a3×b4 + a4×b3)
+	r2 := mul64(a0, b2)
+	r2 = addMul64(r2, a1, b1)
+	r2 = addMul64(r2, a2, b0)
+	r2 = addMul64(r2, a3_19, b4)
+	r2 = addMul64(r2, a4_19, b3)
+
+	// r3 = a0×b3 + a1×b2 + a2×b1 + a3×b0 + 19×a4×b4
+	r3 := mul64(a0, b3)
+	r3 = addMul64(r3, a1, b2)
+	r3 = addMul64(r3, a2, b1)
+	r3 = addMul64(r3, a3, b0)
+	r3 = addMul64(r3, a4_19, b4)
+
+	// r4 = a0×b4 + a1×b3 + a2×b2 + a3×b1 + a4×b0
+	r4 := mul64(a0, b4)
+	r4 = addMul64(r4, a1, b3)
+	r4 = addMul64(r4, a2, b2)
+	r4 = addMul64(r4, a3, b1)
+	r4 = addMul64(r4, a4, b0)
+
+	// After the multiplication, we need to reduce (carry) the five coefficients
+	// to obtain a result with limbs that are at most slightly larger than 2⁵¹,
+	// to respect the Element invariant.
+	//
+	// Overall, the reduction works the same as carryPropagate, except with
+	// wider inputs: we take the carry for each coefficient by shifting it right
+	// by 51, and add it to the limb above it. The top carry is multiplied by 19
+	// according to the reduction identity and added to the lowest limb.
+	//
+	// The largest coefficient (r0) will be at most 111 bits, which guarantees
+	// that all carries are at most 111 - 51 = 60 bits, which fits in a uint64.
+	//
+	//     r0 = a0×b0 + 19×(a1×b4 + a2×b3 + a3×b2 + a4×b1)
+	//     r0 < 2⁵²×2⁵² + 19×(2⁵²×2⁵² + 2⁵²×2⁵² + 2⁵²×2⁵² + 2⁵²×2⁵²)
+	//     r0 < (1 + 19 × 4) × 2⁵² × 2⁵²
+	//     r0 < 2⁷ × 2⁵² × 2⁵²
+	//     r0 < 2¹¹¹
+	//
+	// Moreover, the top coefficient (r4) is at most 107 bits, so c4 is at most
+	// 56 bits, and c4 * 19 is at most 61 bits, which again fits in a uint64 and
+	// allows us to easily apply the reduction identity.
+	//
+	//     r4 = a0×b4 + a1×b3 + a2×b2 + a3×b1 + a4×b0
+	//     r4 < 5 × 2⁵² × 2⁵²
+	//     r4 < 2¹⁰⁷
+	//
+
+	c0 := shiftRightBy51(r0)
+	c1 := shiftRightBy51(r1)
+	c2 := shiftRightBy51(r2)
+	c3 := shiftRightBy51(r3)
+	c4 := shiftRightBy51(r4)
+
+	rr0 := r0.lo&maskLow51Bits + c4*19
+	rr1 := r1.lo&maskLow51Bits + c0
+	rr2 := r2.lo&maskLow51Bits + c1
+	rr3 := r3.lo&maskLow51Bits + c2
+	rr4 := r4.lo&maskLow51Bits + c3
+
+	// Now all coefficients fit into 64-bit registers but are still too large to
+	// be passed around as a Element. We therefore do one last carry chain,
+	// where the carries will be small enough to fit in the wiggle room above 2⁵¹.
+	*v = Element{rr0, rr1, rr2, rr3, rr4}
+	v.carryPropagate()
+}
+
+func feSquareGeneric(v, a *Element) {
+	l0 := a.l0
+	l1 := a.l1
+	l2 := a.l2
+	l3 := a.l3
+	l4 := a.l4
+
+	// Squaring works precisely like multiplication above, but thanks to its
+	// symmetry we get to group a few terms together.
+	//
+	//                          l4   l3   l2   l1   l0  x
+	//                          l4   l3   l2   l1   l0  =
+	//                         ------------------------
+	//                        l4l0 l3l0 l2l0 l1l0 l0l0  +
+	//                   l4l1 l3l1 l2l1 l1l1 l0l1       +
+	//              l4l2 l3l2 l2l2 l1l2 l0l2            +
+	//         l4l3 l3l3 l2l3 l1l3 l0l3                 +
+	//    l4l4 l3l4 l2l4 l1l4 l0l4                      =
+	//   ----------------------------------------------
+	//      r8   r7   r6   r5   r4   r3   r2   r1   r0
+	//
+	//            l4l0    l3l0    l2l0    l1l0    l0l0  +
+	//            l3l1    l2l1    l1l1    l0l1 19×l4l1  +
+	//            l2l2    l1l2    l0l2 19×l4l2 19×l3l2  +
+	//            l1l3    l0l3 19×l4l3 19×l3l3 19×l2l3  +
+	//            l0l4 19×l4l4 19×l3l4 19×l2l4 19×l1l4  =
+	//           --------------------------------------
+	//              r4      r3      r2      r1      r0
+	//
+	// With precomputed 2×, 19×, and 2×19× terms, we can compute each limb with
+	// only three Mul64 and four Add64, instead of five and eight.
+
+	l0_2 := l0 * 2
+	l1_2 := l1 * 2
+
+	l1_38 := l1 * 38
+	l2_38 := l2 * 38
+	l3_38 := l3 * 38
+
+	l3_19 := l3 * 19
+	l4_19 := l4 * 19
+
+	// r0 = l0×l0 + 19×(l1×l4 + l2×l3 + l3×l2 + l4×l1) = l0×l0 + 19×2×(l1×l4 + l2×l3)
+	r0 := mul64(l0, l0)
+	r0 = addMul64(r0, l1_38, l4)
+	r0 = addMul64(r0, l2_38, l3)
+
+	// r1 = l0×l1 + l1×l0 + 19×(l2×l4 + l3×l3 + l4×l2) = 2×l0×l1 + 19×2×l2×l4 + 19×l3×l3
+	r1 := mul64(l0_2, l1)
+	r1 = addMul64(r1, l2_38, l4)
+	r1 = addMul64(r1, l3_19, l3)
+
+	// r2 = l0×l2 + l1×l1 + l2×l0 + 19×(l3×l4 + l4×l3) = 2×l0×l2 + l1×l1 + 19×2×l3×l4
+	r2 := mul64(l0_2, l2)
+	r2 = addMul64(r2, l1, l1)
+	r2 = addMul64(r2, l3_38, l4)
+
+	// r3 = l0×l3 + l1×l2 + l2×l1 + l3×l0 + 19×l4×l4 = 2×l0×l3 + 2×l1×l2 + 19×l4×l4
+	r3 := mul64(l0_2, l3)
+	r3 = addMul64(r3, l1_2, l2)
+	r3 = addMul64(r3, l4_19, l4)
+
+	// r4 = l0×l4 + l1×l3 + l2×l2 + l3×l1 + l4×l0 = 2×l0×l4 + 2×l1×l3 + l2×l2
+	r4 := mul64(l0_2, l4)
+	r4 = addMul64(r4, l1_2, l3)
+	r4 = addMul64(r4, l2, l2)
+
+	c0 := shiftRightBy51(r0)
+	c1 := shiftRightBy51(r1)
+	c2 := shiftRightBy51(r2)
+	c3 := shiftRightBy51(r3)
+	c4 := shiftRightBy51(r4)
+
+	rr0 := r0.lo&maskLow51Bits + c4*19
+	rr1 := r1.lo&maskLow51Bits + c0
+	rr2 := r2.lo&maskLow51Bits + c1
+	rr3 := r3.lo&maskLow51Bits + c2
+	rr4 := r4.lo&maskLow51Bits + c3
+
+	*v = Element{rr0, rr1, rr2, rr3, rr4}
+	v.carryPropagate()
+}
+
+// carryPropagate brings the limbs below 52 bits by applying the reduction
+// identity (a * 2²⁵⁵ + b = a * 19 + b) to the l4 carry.
+func (v *Element) carryPropagateGeneric() *Element {
+	c0 := v.l0 >> 51
+	c1 := v.l1 >> 51
+	c2 := v.l2 >> 51
+	c3 := v.l3 >> 51
+	c4 := v.l4 >> 51
+
+	v.l0 = v.l0&maskLow51Bits + c4*19
+	v.l1 = v.l1&maskLow51Bits + c0
+	v.l2 = v.l2&maskLow51Bits + c1
+	v.l3 = v.l3&maskLow51Bits + c2
+	v.l4 = v.l4&maskLow51Bits + c3
+
+	return v
+}

vendor/filippo.io/edwards25519/scalarmult.go

@@ -0,0 +1,214 @@
+// Copyright (c) 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import "sync"
+
+// basepointTable is a set of 32 affineLookupTables, where table i is generated
+// from 256i * basepoint. It is precomputed the first time it's used.
+func basepointTable() *[32]affineLookupTable {
+	basepointTablePrecomp.initOnce.Do(func() {
+		p := NewGeneratorPoint()
+		for i := 0; i < 32; i++ {
+			basepointTablePrecomp.table[i].FromP3(p)
+			for j := 0; j < 8; j++ {
+				p.Add(p, p)
+			}
+		}
+	})
+	return &basepointTablePrecomp.table
+}
+
+var basepointTablePrecomp struct {
+	table    [32]affineLookupTable
+	initOnce sync.Once
+}
+
+// ScalarBaseMult sets v = x * B, where B is the canonical generator, and
+// returns v.
+//
+// The scalar multiplication is done in constant time.
+func (v *Point) ScalarBaseMult(x *Scalar) *Point {
+	basepointTable := basepointTable()
+
+	// Write x = sum(x_i * 16^i) so  x*B = sum( B*x_i*16^i )
+	// as described in the Ed25519 paper
+	//
+	// Group even and odd coefficients
+	// x*B     = x_0*16^0*B + x_2*16^2*B + ... + x_62*16^62*B
+	//         + x_1*16^1*B + x_3*16^3*B + ... + x_63*16^63*B
+	// x*B     = x_0*16^0*B + x_2*16^2*B + ... + x_62*16^62*B
+	//    + 16*( x_1*16^0*B + x_3*16^2*B + ... + x_63*16^62*B)
+	//
+	// We use a lookup table for each i to get x_i*16^(2*i)*B
+	// and do four doublings to multiply by 16.
+	digits := x.signedRadix16()
+
+	multiple := &affineCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+
+	// Accumulate the odd components first
+	v.Set(NewIdentityPoint())
+	for i := 1; i < 64; i += 2 {
+		basepointTable[i/2].SelectInto(multiple, digits[i])
+		tmp1.AddAffine(v, multiple)
+		v.fromP1xP1(tmp1)
+	}
+
+	// Multiply by 16
+	tmp2.FromP3(v)       // tmp2 =    v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 =  2*v in P1xP1 coords
+	tmp2.FromP1xP1(tmp1) // tmp2 =  2*v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 =  4*v in P1xP1 coords
+	tmp2.FromP1xP1(tmp1) // tmp2 =  4*v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 =  8*v in P1xP1 coords
+	tmp2.FromP1xP1(tmp1) // tmp2 =  8*v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 = 16*v in P1xP1 coords
+	v.fromP1xP1(tmp1)    // now v = 16*(odd components)
+
+	// Accumulate the even components
+	for i := 0; i < 64; i += 2 {
+		basepointTable[i/2].SelectInto(multiple, digits[i])
+		tmp1.AddAffine(v, multiple)
+		v.fromP1xP1(tmp1)
+	}
+
+	return v
+}
+
+// ScalarMult sets v = x * q, and returns v.
+//
+// The scalar multiplication is done in constant time.
+func (v *Point) ScalarMult(x *Scalar, q *Point) *Point {
+	checkInitialized(q)
+
+	var table projLookupTable
+	table.FromP3(q)
+
+	// Write x = sum(x_i * 16^i)
+	// so  x*Q = sum( Q*x_i*16^i )
+	//         = Q*x_0 + 16*(Q*x_1 + 16*( ... + Q*x_63) ... )
+	//           <------compute inside out---------
+	//
+	// We use the lookup table to get the x_i*Q values
+	// and do four doublings to compute 16*Q
+	digits := x.signedRadix16()
+
+	// Unwrap first loop iteration to save computing 16*identity
+	multiple := &projCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	table.SelectInto(multiple, digits[63])
+
+	v.Set(NewIdentityPoint())
+	tmp1.Add(v, multiple) // tmp1 = x_63*Q in P1xP1 coords
+	for i := 62; i >= 0; i-- {
+		tmp2.FromP1xP1(tmp1) // tmp2 =    (prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  2*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  2*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  4*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  4*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  8*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  8*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 = 16*(prev) in P1xP1 coords
+		v.fromP1xP1(tmp1)    //    v = 16*(prev) in P3 coords
+		table.SelectInto(multiple, digits[i])
+		tmp1.Add(v, multiple) // tmp1 = x_i*Q + 16*(prev) in P1xP1 coords
+	}
+	v.fromP1xP1(tmp1)
+	return v
+}
+
+// basepointNafTable is the nafLookupTable8 for the basepoint.
+// It is precomputed the first time it's used.
+func basepointNafTable() *nafLookupTable8 {
+	basepointNafTablePrecomp.initOnce.Do(func() {
+		basepointNafTablePrecomp.table.FromP3(NewGeneratorPoint())
+	})
+	return &basepointNafTablePrecomp.table
+}
+
+var basepointNafTablePrecomp struct {
+	table    nafLookupTable8
+	initOnce sync.Once
+}
+
+// VarTimeDoubleScalarBaseMult sets v = a * A + b * B, where B is the canonical
+// generator, and returns v.
+//
+// Execution time depends on the inputs.
+func (v *Point) VarTimeDoubleScalarBaseMult(a *Scalar, A *Point, b *Scalar) *Point {
+	checkInitialized(A)
+
+	// Similarly to the single variable-base approach, we compute
+	// digits and use them with a lookup table.  However, because
+	// we are allowed to do variable-time operations, we don't
+	// need constant-time lookups or constant-time digit
+	// computations.
+	//
+	// So we use a non-adjacent form of some width w instead of
+	// radix 16.  This is like a binary representation (one digit
+	// for each binary place) but we allow the digits to grow in
+	// magnitude up to 2^{w-1} so that the nonzero digits are as
+	// sparse as possible.  Intuitively, this "condenses" the
+	// "mass" of the scalar onto sparse coefficients (meaning
+	// fewer additions).
+
+	basepointNafTable := basepointNafTable()
+	var aTable nafLookupTable5
+	aTable.FromP3(A)
+	// Because the basepoint is fixed, we can use a wider NAF
+	// corresponding to a bigger table.
+	aNaf := a.nonAdjacentForm(5)
+	bNaf := b.nonAdjacentForm(8)
+
+	// Find the first nonzero coefficient.
+	i := 255
+	for j := i; j >= 0; j-- {
+		if aNaf[j] != 0 || bNaf[j] != 0 {
+			break
+		}
+	}
+
+	multA := &projCached{}
+	multB := &affineCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	tmp2.Zero()
+
+	// Move from high to low bits, doubling the accumulator
+	// at each iteration and checking whether there is a nonzero
+	// coefficient to look up a multiple of.
+	for ; i >= 0; i-- {
+		tmp1.Double(tmp2)
+
+		// Only update v if we have a nonzero coeff to add in.
+		if aNaf[i] > 0 {
+			v.fromP1xP1(tmp1)
+			aTable.SelectInto(multA, aNaf[i])
+			tmp1.Add(v, multA)
+		} else if aNaf[i] < 0 {
+			v.fromP1xP1(tmp1)
+			aTable.SelectInto(multA, -aNaf[i])
+			tmp1.Sub(v, multA)
+		}
+
+		if bNaf[i] > 0 {
+			v.fromP1xP1(tmp1)
+			basepointNafTable.SelectInto(multB, bNaf[i])
+			tmp1.AddAffine(v, multB)
+		} else if bNaf[i] < 0 {
+			v.fromP1xP1(tmp1)
+			basepointNafTable.SelectInto(multB, -bNaf[i])
+			tmp1.SubAffine(v, multB)
+		}
+
+		tmp2.FromP1xP1(tmp1)
+	}
+
+	v.fromP2(tmp2)
+	return v
+}

vendor/filippo.io/edwards25519/tables.go

@@ -0,0 +1,129 @@
+// Copyright (c) 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import (
+	"crypto/subtle"
+)
+
+// A dynamic lookup table for variable-base, constant-time scalar muls.
+type projLookupTable struct {
+	points [8]projCached
+}
+
+// A precomputed lookup table for fixed-base, constant-time scalar muls.
+type affineLookupTable struct {
+	points [8]affineCached
+}
+
+// A dynamic lookup table for variable-base, variable-time scalar muls.
+type nafLookupTable5 struct {
+	points [8]projCached
+}
+
+// A precomputed lookup table for fixed-base, variable-time scalar muls.
+type nafLookupTable8 struct {
+	points [64]affineCached
+}
+
+// Constructors.
+
+// Builds a lookup table at runtime. Fast.
+func (v *projLookupTable) FromP3(q *Point) {
+	// Goal: v.points[i] = (i+1)*Q, i.e., Q, 2Q, ..., 8Q
+	// This allows lookup of -8Q, ..., -Q, 0, Q, ..., 8Q
+	v.points[0].FromP3(q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 7; i++ {
+		// Compute (i+1)*Q as Q + i*Q and convert to a ProjCached
+		// This is needlessly complicated because the API has explicit
+		// recievers instead of creating stack objects and relying on RVO
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.Add(q, &v.points[i])))
+	}
+}
+
+// This is not optimised for speed; fixed-base tables should be precomputed.
+func (v *affineLookupTable) FromP3(q *Point) {
+	// Goal: v.points[i] = (i+1)*Q, i.e., Q, 2Q, ..., 8Q
+	// This allows lookup of -8Q, ..., -Q, 0, Q, ..., 8Q
+	v.points[0].FromP3(q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 7; i++ {
+		// Compute (i+1)*Q as Q + i*Q and convert to AffineCached
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.AddAffine(q, &v.points[i])))
+	}
+}
+
+// Builds a lookup table at runtime. Fast.
+func (v *nafLookupTable5) FromP3(q *Point) {
+	// Goal: v.points[i] = (2*i+1)*Q, i.e., Q, 3Q, 5Q, ..., 15Q
+	// This allows lookup of -15Q, ..., -3Q, -Q, 0, Q, 3Q, ..., 15Q
+	v.points[0].FromP3(q)
+	q2 := Point{}
+	q2.Add(q, q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 7; i++ {
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.Add(&q2, &v.points[i])))
+	}
+}
+
+// This is not optimised for speed; fixed-base tables should be precomputed.
+func (v *nafLookupTable8) FromP3(q *Point) {
+	v.points[0].FromP3(q)
+	q2 := Point{}
+	q2.Add(q, q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 63; i++ {
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.AddAffine(&q2, &v.points[i])))
+	}
+}
+
+// Selectors.
+
+// Set dest to x*Q, where -8 <= x <= 8, in constant time.
+func (v *projLookupTable) SelectInto(dest *projCached, x int8) {
+	// Compute xabs = |x|
+	xmask := x >> 7
+	xabs := uint8((x + xmask) ^ xmask)
+
+	dest.Zero()
+	for j := 1; j <= 8; j++ {
+		// Set dest = j*Q if |x| = j
+		cond := subtle.ConstantTimeByteEq(xabs, uint8(j))
+		dest.Select(&v.points[j-1], dest, cond)
+	}
+	// Now dest = |x|*Q, conditionally negate to get x*Q
+	dest.CondNeg(int(xmask & 1))
+}
+
+// Set dest to x*Q, where -8 <= x <= 8, in constant time.
+func (v *affineLookupTable) SelectInto(dest *affineCached, x int8) {
+	// Compute xabs = |x|
+	xmask := x >> 7
+	xabs := uint8((x + xmask) ^ xmask)
+
+	dest.Zero()
+	for j := 1; j <= 8; j++ {
+		// Set dest = j*Q if |x| = j
+		cond := subtle.ConstantTimeByteEq(xabs, uint8(j))
+		dest.Select(&v.points[j-1], dest, cond)
+	}
+	// Now dest = |x|*Q, conditionally negate to get x*Q
+	dest.CondNeg(int(xmask & 1))
+}
+
+// Given odd x with 0 < x < 2^4, return x*Q (in variable time).
+func (v *nafLookupTable5) SelectInto(dest *projCached, x int8) {
+	*dest = v.points[x/2]
+}
+
+// Given odd x with 0 < x < 2^7, return x*Q (in variable time).
+func (v *nafLookupTable8) SelectInto(dest *affineCached, x int8) {
+	*dest = v.points[x/2]
+}

vendor/github.com/SevereCloud/vksdk/v2/README.md

@@ -1,7 +1,7 @@
 # VK SDK for Golang
 
 [![PkgGoDev](https://pkg.go.dev/badge/github.com/SevereCloud/vksdk/v2/v2)](https://pkg.go.dev/github.com/SevereCloud/vksdk/v2?tab=subdirectories)
-[![VK Developers](https://img.shields.io/badge/developers-%234a76a8.svg?logo=VK&logoColor=white)](https://vk.com/dev/)
+[![VK Developers](https://img.shields.io/badge/developers-%234a76a8.svg?logo=VK&logoColor=white)](https://dev.vk.com/)
 [![codecov](https://codecov.io/gh/SevereCloud/vksdk/branch/master/graph/badge.svg)](https://codecov.io/gh/SevereCloud/vksdk)
 [![VK chat](https://img.shields.io/badge/VK%20chat-%234a76a8.svg?logo=VK&logoColor=white)](https://vk.me/join/AJQ1d6Or8Q00Y_CSOESfbqGt)
 [![release](https://img.shields.io/github/v/tag/SevereCloud/vksdk?label=release)](https://github.com/SevereCloud/vksdk/releases)

vendor/github.com/SevereCloud/vksdk/v2/api/account.go

@@ -141,6 +141,8 @@ func (vk *VK) AccountSetInfo(params Params) (response int, err error) {
 // AccountSetNameInMenu sets an application screen name
 // (up to 17 characters), that is shown to the user in the left menu.
 //
+// Deprecated: This method is deprecated and may be disabled soon, please avoid
+//
 // https://vk.com/dev/account.setNameInMenu
 func (vk *VK) AccountSetNameInMenu(params Params) (response int, err error) {
 	err = vk.RequestUnmarshal("account.setNameInMenu", &response, params)

vendor/github.com/SevereCloud/vksdk/v2/api/store.go

@@ -1,4 +1,4 @@
-package api // import "github.com/SevereCloud/vksdk/api"
+package api // import "github.com/SevereCloud/vksdk/v2/api"
 
 import (
 	"github.com/SevereCloud/vksdk/v2/object"

vendor/github.com/SevereCloud/vksdk/v2/api/video.go

@@ -235,6 +235,17 @@ func (vk *VK) VideoGetCommentsExtended(params Params) (response VideoGetComments
 	return
 }
 
+// VideoLiveGetCategoriesResponse struct.
+type VideoLiveGetCategoriesResponse []object.VideoLiveCategory
+
+// VideoLiveGetCategories method.
+//
+// https://vk.com/dev/video.liveGetCategories
+func (vk *VK) VideoLiveGetCategories(params Params) (response VideoLiveGetCategoriesResponse, err error) {
+	err = vk.RequestUnmarshal("video.liveGetCategories", &response, params)
+	return
+}
+
 // VideoRemoveFromAlbum allows you to remove the video from the album.
 //
 // https://vk.com/dev/video.removeFromAlbum
@@ -336,3 +347,27 @@ func (vk *VK) VideoSearchExtended(params Params) (response VideoSearchExtendedRe
 
 	return
 }
+
+// VideoStartStreamingResponse struct.
+type VideoStartStreamingResponse object.VideoLive
+
+// VideoStartStreaming method.
+//
+// https://vk.com/dev/video.startStreaming
+func (vk *VK) VideoStartStreaming(params Params) (response VideoStartStreamingResponse, err error) {
+	err = vk.RequestUnmarshal("video.startStreaming", &response, params)
+	return
+}
+
+// VideoStopStreamingResponse struct.
+type VideoStopStreamingResponse struct {
+	UniqueViewers int `json:"unique_viewers"`
+}
+
+// VideoStopStreaming method.
+//
+// https://vk.com/dev/video.stopStreaming
+func (vk *VK) VideoStopStreaming(params Params) (response VideoStopStreamingResponse, err error) {
+	err = vk.RequestUnmarshal("video.stopStreaming", &response, params)
+	return
+}

vendor/github.com/SevereCloud/vksdk/v2/doc.go

@@ -7,6 +7,6 @@ package vksdk
 
 // Module constants.
 const (
-	Version = "2.13.1"
+	Version = "2.14.0"
 	API     = "5.131"
 )

vendor/github.com/SevereCloud/vksdk/v2/events/context.go

@@ -15,3 +15,8 @@ func GroupIDFromContext(ctx context.Context) int {
 func EventIDFromContext(ctx context.Context) string {
 	return ctx.Value(internal.EventIDKey).(string)
 }
+
+// VersionFromContext returns the version from context.
+func VersionFromContext(ctx context.Context) string {
+	return ctx.Value(internal.EventVersionKey).(string)
+}

vendor/github.com/SevereCloud/vksdk/v2/events/events.go

@@ -81,6 +81,7 @@ type GroupEvent struct {
 	Object  json.RawMessage `json:"object"`
 	GroupID int             `json:"group_id"`
 	EventID string          `json:"event_id"`
+	V       string          `json:"v"`
 	Secret  string          `json:"secret"`
 }
 
@@ -158,6 +159,7 @@ func NewFuncList() *FuncList {
 func (fl FuncList) Handler(ctx context.Context, e GroupEvent) error { // nolint:gocyclo
 	ctx = context.WithValue(ctx, internal.GroupIDKey, e.GroupID)
 	ctx = context.WithValue(ctx, internal.EventIDKey, e.EventID)
+	ctx = context.WithValue(ctx, internal.EventVersionKey, e.V)
 
 	if sliceFunc, ok := fl.special[e.Type]; ok {
 		for _, f := range sliceFunc {

vendor/github.com/SevereCloud/vksdk/v2/internal/transport.go

@@ -28,6 +28,7 @@ const (
 	CallbackRetryCounterKey
 	CallbackRetryAfterKey
 	CallbackRemove
+	EventVersionKey
 )
 
 // ContextClient return *http.Client.

vendor/github.com/SevereCloud/vksdk/v2/object/account.go

@@ -84,7 +84,6 @@ type AccountAccountCounters struct {
 
 // AccountInfo struct.
 type AccountInfo struct {
-
 	// Country code.
 	Country string `json:"country"`
 

vendor/github.com/SevereCloud/vksdk/v2/object/messages.go

@@ -409,7 +409,6 @@ type MessageContentSource struct {
 	Type                        string `json:"type"`
 	MessageContentSourceMessage        // type message
 	MessageContentSourceURL            // type url
-
 }
 
 // NewMessageContentSourceMessage ...

vendor/github.com/SevereCloud/vksdk/v2/object/users.go

@@ -24,110 +24,113 @@ const (
 
 // UsersUser struct.
 type UsersUser struct {
-	ID                     int                   `json:"id"`
-	FirstName              string                `json:"first_name"`
-	LastName               string                `json:"last_name"`
-	FirstNameNom           string                `json:"first_name_nom"`
-	FirstNameGen           string                `json:"first_name_gen"`
-	FirstNameDat           string                `json:"first_name_dat"`
-	FirstNameAcc           string                `json:"first_name_acc"`
-	FirstNameIns           string                `json:"first_name_ins"`
-	FirstNameAbl           string                `json:"first_name_abl"`
-	LastNameNom            string                `json:"last_name_nom"`
-	LastNameGen            string                `json:"last_name_gen"`
-	LastNameDat            string                `json:"last_name_dat"`
-	LastNameAcc            string                `json:"last_name_acc"`
-	LastNameIns            string                `json:"last_name_ins"`
-	LastNameAbl            string                `json:"last_name_abl"`
-	MaidenName             string                `json:"maiden_name"`
-	Sex                    int                   `json:"sex"`
-	Nickname               string                `json:"nickname"`
-	Domain                 string                `json:"domain"`
-	ScreenName             string                `json:"screen_name"`
-	Bdate                  string                `json:"bdate"`
-	City                   BaseObject            `json:"city"`
-	Country                BaseObject            `json:"country"`
-	Photo50                string                `json:"photo_50"`
-	Photo100               string                `json:"photo_100"`
-	Photo200               string                `json:"photo_200"`
-	PhotoMax               string                `json:"photo_max"`
-	Photo200Orig           string                `json:"photo_200_orig"`
-	Photo400Orig           string                `json:"photo_400_orig"`
-	PhotoMaxOrig           string                `json:"photo_max_orig"`
-	PhotoID                string                `json:"photo_id"`
-	FriendStatus           int                   `json:"friend_status"` // see FriendStatus const
-	OnlineApp              int                   `json:"online_app"`
-	Online                 BaseBoolInt           `json:"online"`
-	OnlineMobile           BaseBoolInt           `json:"online_mobile"`
-	HasPhoto               BaseBoolInt           `json:"has_photo"`
-	HasMobile              BaseBoolInt           `json:"has_mobile"`
-	IsClosed               BaseBoolInt           `json:"is_closed"`
-	IsFriend               BaseBoolInt           `json:"is_friend"`
-	IsFavorite             BaseBoolInt           `json:"is_favorite"`
-	IsHiddenFromFeed       BaseBoolInt           `json:"is_hidden_from_feed"`
-	CanAccessClosed        BaseBoolInt           `json:"can_access_closed"`
-	CanBeInvitedGroup      BaseBoolInt           `json:"can_be_invited_group"`
-	CanPost                BaseBoolInt           `json:"can_post"`
-	CanSeeAllPosts         BaseBoolInt           `json:"can_see_all_posts"`
-	CanSeeAudio            BaseBoolInt           `json:"can_see_audio"`
-	CanWritePrivateMessage BaseBoolInt           `json:"can_write_private_message"`
-	CanSendFriendRequest   BaseBoolInt           `json:"can_send_friend_request"`
-	CanCallFromGroup       BaseBoolInt           `json:"can_call_from_group"`
-	Verified               BaseBoolInt           `json:"verified"`
-	Trending               BaseBoolInt           `json:"trending"`
-	Blacklisted            BaseBoolInt           `json:"blacklisted"`
-	BlacklistedByMe        BaseBoolInt           `json:"blacklisted_by_me"`
-	Facebook               string                `json:"facebook"`
-	FacebookName           string                `json:"facebook_name"`
-	Twitter                string                `json:"twitter"`
-	Instagram              string                `json:"instagram"`
-	Site                   string                `json:"site"`
-	Status                 string                `json:"status"`
-	StatusAudio            AudioAudio            `json:"status_audio"`
-	LastSeen               UsersLastSeen         `json:"last_seen"`
-	CropPhoto              UsersCropPhoto        `json:"crop_photo"`
-	FollowersCount         int                   `json:"followers_count"`
-	CommonCount            int                   `json:"common_count"`
-	Occupation             UsersOccupation       `json:"occupation"`
-	Career                 []UsersCareer         `json:"career"`
-	Military               []UsersMilitary       `json:"military"`
-	University             int                   `json:"university"`
-	UniversityName         string                `json:"university_name"`
-	Faculty                int                   `json:"faculty"`
-	FacultyName            string                `json:"faculty_name"`
-	Graduation             int                   `json:"graduation"`
-	EducationForm          string                `json:"education_form"`
-	EducationStatus        string                `json:"education_status"`
-	HomeTown               string                `json:"home_town"`
-	Relation               int                   `json:"relation"`
-	Personal               UsersPersonal         `json:"personal"`
-	Interests              string                `json:"interests"`
-	Music                  string                `json:"music"`
-	Activities             string                `json:"activities"`
-	Movies                 string                `json:"movies"`
-	Tv                     string                `json:"tv"`
-	Books                  string                `json:"books"`
-	Games                  string                `json:"games"`
-	Universities           []UsersUniversity     `json:"universities"`
-	Schools                []UsersSchool         `json:"schools"`
-	About                  string                `json:"about"`
-	Relatives              []UsersRelative       `json:"relatives"`
-	Quotes                 string                `json:"quotes"`
-	Lists                  []int                 `json:"lists"`
-	Deactivated            string                `json:"deactivated"`
-	WallDefault            string                `json:"wall_default"`
-	Timezone               int                   `json:"timezone"`
-	Exports                UsersExports          `json:"exports"`
-	Counters               UsersUserCounters     `json:"counters"`
-	MobilePhone            string                `json:"mobile_phone"`
-	HomePhone              string                `json:"home_phone"`
-	FoundWith              int                   `json:"found_with"` // TODO: check it
-	OnlineInfo             UsersOnlineInfo       `json:"online_info"`
-	Mutual                 FriendsRequestsMutual `json:"mutual"`
-	TrackCode              string                `json:"track_code"`
-	RelationPartner        UsersUserMin          `json:"relation_partner"`
-	Type                   string                `json:"type"`
-	Skype                  string                `json:"skype"`
+	ID                     int         `json:"id"`
+	FirstName              string      `json:"first_name"`
+	LastName               string      `json:"last_name"`
+	FirstNameNom           string      `json:"first_name_nom"`
+	FirstNameGen           string      `json:"first_name_gen"`
+	FirstNameDat           string      `json:"first_name_dat"`
+	FirstNameAcc           string      `json:"first_name_acc"`
+	FirstNameIns           string      `json:"first_name_ins"`
+	FirstNameAbl           string      `json:"first_name_abl"`
+	LastNameNom            string      `json:"last_name_nom"`
+	LastNameGen            string      `json:"last_name_gen"`
+	LastNameDat            string      `json:"last_name_dat"`
+	LastNameAcc            string      `json:"last_name_acc"`
+	LastNameIns            string      `json:"last_name_ins"`
+	LastNameAbl            string      `json:"last_name_abl"`
+	MaidenName             string      `json:"maiden_name"`
+	Sex                    int         `json:"sex"`
+	Nickname               string      `json:"nickname"`
+	Domain                 string      `json:"domain"`
+	ScreenName             string      `json:"screen_name"`
+	Bdate                  string      `json:"bdate"`
+	City                   BaseObject  `json:"city"`
+	Country                BaseObject  `json:"country"`
+	Photo50                string      `json:"photo_50"`
+	Photo100               string      `json:"photo_100"`
+	Photo200               string      `json:"photo_200"`
+	PhotoMax               string      `json:"photo_max"`
+	Photo200Orig           string      `json:"photo_200_orig"`
+	Photo400Orig           string      `json:"photo_400_orig"`
+	PhotoMaxOrig           string      `json:"photo_max_orig"`
+	PhotoID                string      `json:"photo_id"`
+	FriendStatus           int         `json:"friend_status"` // see FriendStatus const
+	OnlineApp              int         `json:"online_app"`
+	Online                 BaseBoolInt `json:"online"`
+	OnlineMobile           BaseBoolInt `json:"online_mobile"`
+	HasPhoto               BaseBoolInt `json:"has_photo"`
+	HasMobile              BaseBoolInt `json:"has_mobile"`
+	IsClosed               BaseBoolInt `json:"is_closed"`
+	IsFriend               BaseBoolInt `json:"is_friend"`
+	IsFavorite             BaseBoolInt `json:"is_favorite"`
+	IsHiddenFromFeed       BaseBoolInt `json:"is_hidden_from_feed"`
+	CanAccessClosed        BaseBoolInt `json:"can_access_closed"`
+	CanBeInvitedGroup      BaseBoolInt `json:"can_be_invited_group"`
+	CanPost                BaseBoolInt `json:"can_post"`
+	CanSeeAllPosts         BaseBoolInt `json:"can_see_all_posts"`
+	CanSeeAudio            BaseBoolInt `json:"can_see_audio"`
+	CanWritePrivateMessage BaseBoolInt `json:"can_write_private_message"`
+	CanSendFriendRequest   BaseBoolInt `json:"can_send_friend_request"`
+	CanCallFromGroup       BaseBoolInt `json:"can_call_from_group"`
+	Verified               BaseBoolInt `json:"verified"`
+	Trending               BaseBoolInt `json:"trending"`
+	Blacklisted            BaseBoolInt `json:"blacklisted"`
+	BlacklistedByMe        BaseBoolInt `json:"blacklisted_by_me"`
+	// Deprecated: Facebook и Instagram запрещены в России, Meta признана экстремистской организацией...
+	Facebook string `json:"facebook"`
+	// Deprecated: Facebook и Instagram запрещены в России, Meta признана экстремистской организацией...
+	FacebookName string `json:"facebook_name"`
+	// Deprecated: Facebook и Instagram запрещены в России, Meta признана экстремистской организацией...
+	Instagram       string                `json:"instagram"`
+	Twitter         string                `json:"twitter"`
+	Site            string                `json:"site"`
+	Status          string                `json:"status"`
+	StatusAudio     AudioAudio            `json:"status_audio"`
+	LastSeen        UsersLastSeen         `json:"last_seen"`
+	CropPhoto       UsersCropPhoto        `json:"crop_photo"`
+	FollowersCount  int                   `json:"followers_count"`
+	CommonCount     int                   `json:"common_count"`
+	Occupation      UsersOccupation       `json:"occupation"`
+	Career          []UsersCareer         `json:"career"`
+	Military        []UsersMilitary       `json:"military"`
+	University      int                   `json:"university"`
+	UniversityName  string                `json:"university_name"`
+	Faculty         int                   `json:"faculty"`
+	FacultyName     string                `json:"faculty_name"`
+	Graduation      int                   `json:"graduation"`
+	EducationForm   string                `json:"education_form"`
+	EducationStatus string                `json:"education_status"`
+	HomeTown        string                `json:"home_town"`
+	Relation        int                   `json:"relation"`
+	Personal        UsersPersonal         `json:"personal"`
+	Interests       string                `json:"interests"`
+	Music           string                `json:"music"`
+	Activities      string                `json:"activities"`
+	Movies          string                `json:"movies"`
+	Tv              string                `json:"tv"`
+	Books           string                `json:"books"`
+	Games           string                `json:"games"`
+	Universities    []UsersUniversity     `json:"universities"`
+	Schools         []UsersSchool         `json:"schools"`
+	About           string                `json:"about"`
+	Relatives       []UsersRelative       `json:"relatives"`
+	Quotes          string                `json:"quotes"`
+	Lists           []int                 `json:"lists"`
+	Deactivated     string                `json:"deactivated"`
+	WallDefault     string                `json:"wall_default"`
+	Timezone        int                   `json:"timezone"`
+	Exports         UsersExports          `json:"exports"`
+	Counters        UsersUserCounters     `json:"counters"`
+	MobilePhone     string                `json:"mobile_phone"`
+	HomePhone       string                `json:"home_phone"`
+	FoundWith       int                   `json:"found_with"` // TODO: check it
+	OnlineInfo      UsersOnlineInfo       `json:"online_info"`
+	Mutual          FriendsRequestsMutual `json:"mutual"`
+	TrackCode       string                `json:"track_code"`
+	RelationPartner UsersUserMin          `json:"relation_partner"`
+	Type            string                `json:"type"`
+	Skype           string                `json:"skype"`
 }
 
 // ToMention return mention.

vendor/github.com/SevereCloud/vksdk/v2/object/video.go

@@ -297,3 +297,27 @@ type VideoVideoImage struct {
 	BaseImage
 	WithPadding BaseBoolInt `json:"with_padding"`
 }
+
+// VideoLive struct.
+type VideoLive struct {
+	OwnerID     int             `json:"owner_id"`
+	VideoID     int             `json:"video_id"`
+	Name        string          `json:"name"`
+	Description string          `json:"description"`
+	AccessKey   string          `json:"access_key"`
+	Stream      VideoLiveStream `json:"stream"`
+}
+
+// VideoLiveStream struct.
+type VideoLiveStream struct {
+	URL     string `json:"url"`
+	Key     string `json:"key"`
+	OKMPURL string `json:"okmp_url"`
+}
+
+// VideoLiveCategory struct.
+type VideoLiveCategory struct {
+	ID      int                 `json:"id"`
+	Label   string              `json:"label"`
+	Sublist []VideoLiveCategory `json:"sublist,omitempty"`
+}

vendor/github.com/bwmarrin/discordgo/.travis.yml

@@ -4,6 +4,8 @@ go:
     - 1.14.x
     - 1.15.x
     - 1.16.x
+    - 1.17.x
+    - 1.18.x
 env:
     - GO111MODULE=on
 install:

vendor/github.com/bwmarrin/discordgo/components.go

@@ -70,7 +70,7 @@ type ActionsRow struct {
 func (r ActionsRow) MarshalJSON() ([]byte, error) {
 	type actionsRow ActionsRow
 
-	return json.Marshal(struct {
+	return Marshal(struct {
 		actionsRow
 		Type ComponentType `json:"type"`
 	}{
@@ -145,7 +145,7 @@ func (b Button) MarshalJSON() ([]byte, error) {
 		b.Style = PrimaryButton
 	}
 
-	return json.Marshal(struct {
+	return Marshal(struct {
 		button
 		Type ComponentType `json:"type"`
 	}{
@@ -192,7 +192,7 @@ func (SelectMenu) Type() ComponentType {
 func (m SelectMenu) MarshalJSON() ([]byte, error) {
 	type selectMenu SelectMenu
 
-	return json.Marshal(struct {
+	return Marshal(struct {
 		selectMenu
 		Type ComponentType `json:"type"`
 	}{
@@ -208,7 +208,7 @@ type TextInput struct {
 	Style       TextInputStyle `json:"style"`
 	Placeholder string         `json:"placeholder,omitempty"`
 	Value       string         `json:"value,omitempty"`
-	Required    bool           `json:"required,omitempty"`
+	Required    bool           `json:"required"`
 	MinLength   int            `json:"min_length,omitempty"`
 	MaxLength   int            `json:"max_length,omitempty"`
 }
@@ -222,7 +222,7 @@ func (TextInput) Type() ComponentType {
 func (m TextInput) MarshalJSON() ([]byte, error) {
 	type inputText TextInput
 
-	return json.Marshal(struct {
+	return Marshal(struct {
 		inputText
 		Type ComponentType `json:"type"`
 	}{

vendor/github.com/bwmarrin/discordgo/discord.go

@@ -20,7 +20,7 @@ import (
 )
 
 // VERSION of DiscordGo, follows Semantic Versioning. (http://semver.org/)
-const VERSION = "0.24.0"
+const VERSION = "0.25.0"
 
 // New creates a new Discord session with provided token.
 // If the token is for a bot, it must be prefixed with "Bot "
@@ -36,6 +36,7 @@ func New(token string) (s *Session, err error) {
 		StateEnabled:           true,
 		Compress:               true,
 		ShouldReconnectOnError: true,
+		ShouldRetryOnRateLimit: true,
 		ShardID:                0,
 		ShardCount:             1,
 		MaxRestRetries:         3,
@@ -49,7 +50,6 @@ func New(token string) (s *Session, err error) {
 	// These can be modified prior to calling Open()
 	s.Identify.Compress = true
 	s.Identify.LargeThreshold = 250
-	s.Identify.GuildSubscriptions = true
 	s.Identify.Properties.OS = runtime.GOOS
 	s.Identify.Properties.Browser = "DiscordGo v" + VERSION
 	s.Identify.Intents = IntentsAllWithoutPrivileged

vendor/github.com/bwmarrin/discordgo/endpoints.go

@@ -23,15 +23,16 @@ var (
 	EndpointSmActive   = EndpointSm + "active.json"
 	EndpointSmUpcoming = EndpointSm + "upcoming.json"
 
-	EndpointDiscord    = "https://discord.com/"
-	EndpointAPI        = EndpointDiscord + "api/v" + APIVersion + "/"
-	EndpointGuilds     = EndpointAPI + "guilds/"
-	EndpointChannels   = EndpointAPI + "channels/"
-	EndpointUsers      = EndpointAPI + "users/"
-	EndpointGateway    = EndpointAPI + "gateway"
-	EndpointGatewayBot = EndpointGateway + "/bot"
-	EndpointWebhooks   = EndpointAPI + "webhooks/"
-	EndpointStickers   = EndpointAPI + "stickers/"
+	EndpointDiscord        = "https://discord.com/"
+	EndpointAPI            = EndpointDiscord + "api/v" + APIVersion + "/"
+	EndpointGuilds         = EndpointAPI + "guilds/"
+	EndpointChannels       = EndpointAPI + "channels/"
+	EndpointUsers          = EndpointAPI + "users/"
+	EndpointGateway        = EndpointAPI + "gateway"
+	EndpointGatewayBot     = EndpointGateway + "/bot"
+	EndpointWebhooks       = EndpointAPI + "webhooks/"
+	EndpointStickers       = EndpointAPI + "stickers/"
+	EndpointStageInstances = EndpointAPI + "stage-instances"
 
 	EndpointCDN             = "https://cdn.discordapp.com/"
 	EndpointCDNAttachments  = EndpointCDN + "attachments/"
@@ -72,6 +73,7 @@ var (
 	EndpointGuildPreview             = func(gID string) string { return EndpointGuilds + gID + "/preview" }
 	EndpointGuildChannels            = func(gID string) string { return EndpointGuilds + gID + "/channels" }
 	EndpointGuildMembers             = func(gID string) string { return EndpointGuilds + gID + "/members" }
+	EndpointGuildMembersSearch       = func(gID string) string { return EndpointGuildMembers(gID) + "/search" }
 	EndpointGuildMember              = func(gID, uID string) string { return EndpointGuilds + gID + "/members/" + uID }
 	EndpointGuildMemberRole          = func(gID, uID, rID string) string { return EndpointGuilds + gID + "/members/" + uID + "/roles/" + rID }
 	EndpointGuildBans                = func(gID string) string { return EndpointGuilds + gID + "/bans" }
@@ -94,6 +96,7 @@ var (
 	EndpointGuildBanner              = func(gID, hash string) string { return EndpointCDNBanners + gID + "/" + hash + ".png" }
 	EndpointGuildStickers            = func(gID string) string { return EndpointGuilds + gID + "/stickers" }
 	EndpointGuildSticker             = func(gID, sID string) string { return EndpointGuilds + gID + "/stickers/" + sID }
+	EndpointStageInstance            = func(cID string) string { return EndpointStageInstances + "/" + cID }
 	EndpointGuildScheduledEvents     = func(gID string) string { return EndpointGuilds + gID + "/scheduled-events" }
 	EndpointGuildScheduledEvent      = func(gID, eID string) string { return EndpointGuilds + gID + "/scheduled-events/" + eID }
 	EndpointGuildScheduledEventUsers = func(gID, eID string) string { return EndpointGuildScheduledEvent(gID, eID) + "/users" }

vendor/github.com/bwmarrin/discordgo/eventhandlers.go

@@ -7,62 +7,67 @@ package discordgo
 // Event type values are used to match the events returned by Discord.
 // EventTypes surrounded by __ are synthetic and are internal to DiscordGo.
 const (
-	channelCreateEventType             = "CHANNEL_CREATE"
-	channelDeleteEventType             = "CHANNEL_DELETE"
-	channelPinsUpdateEventType         = "CHANNEL_PINS_UPDATE"
-	channelUpdateEventType             = "CHANNEL_UPDATE"
-	connectEventType                   = "__CONNECT__"
-	disconnectEventType                = "__DISCONNECT__"
-	eventEventType                     = "__EVENT__"
-	guildBanAddEventType               = "GUILD_BAN_ADD"
-	guildBanRemoveEventType            = "GUILD_BAN_REMOVE"
-	guildCreateEventType               = "GUILD_CREATE"
-	guildDeleteEventType               = "GUILD_DELETE"
-	guildEmojisUpdateEventType         = "GUILD_EMOJIS_UPDATE"
-	guildIntegrationsUpdateEventType   = "GUILD_INTEGRATIONS_UPDATE"
-	guildMemberAddEventType            = "GUILD_MEMBER_ADD"
-	guildMemberRemoveEventType         = "GUILD_MEMBER_REMOVE"
-	guildMemberUpdateEventType         = "GUILD_MEMBER_UPDATE"
-	guildMembersChunkEventType         = "GUILD_MEMBERS_CHUNK"
-	guildRoleCreateEventType           = "GUILD_ROLE_CREATE"
-	guildRoleDeleteEventType           = "GUILD_ROLE_DELETE"
-	guildRoleUpdateEventType           = "GUILD_ROLE_UPDATE"
-	guildUpdateEventType               = "GUILD_UPDATE"
-	guildScheduledEventCreateEventType = "GUILD_SCHEDULED_EVENT_CREATE"
-	guildScheduledEventUpdateEventType = "GUILD_SCHEDULED_EVENT_UPDATE"
-	guildScheduledEventDeleteEventType = "GUILD_SCHEDULED_EVENT_DELETE"
-	interactionCreateEventType         = "INTERACTION_CREATE"
-	inviteCreateEventType              = "INVITE_CREATE"
-	inviteDeleteEventType              = "INVITE_DELETE"
-	messageAckEventType                = "MESSAGE_ACK"
-	messageCreateEventType             = "MESSAGE_CREATE"
-	messageDeleteEventType             = "MESSAGE_DELETE"
-	messageDeleteBulkEventType         = "MESSAGE_DELETE_BULK"
-	messageReactionAddEventType        = "MESSAGE_REACTION_ADD"
-	messageReactionRemoveEventType     = "MESSAGE_REACTION_REMOVE"
-	messageReactionRemoveAllEventType  = "MESSAGE_REACTION_REMOVE_ALL"
-	messageUpdateEventType             = "MESSAGE_UPDATE"
-	presenceUpdateEventType            = "PRESENCE_UPDATE"
-	presencesReplaceEventType          = "PRESENCES_REPLACE"
-	rateLimitEventType                 = "__RATE_LIMIT__"
-	readyEventType                     = "READY"
-	relationshipAddEventType           = "RELATIONSHIP_ADD"
-	relationshipRemoveEventType        = "RELATIONSHIP_REMOVE"
-	resumedEventType                   = "RESUMED"
-	threadCreateEventType              = "THREAD_CREATE"
-	threadDeleteEventType              = "THREAD_DELETE"
-	threadListSyncEventType            = "THREAD_LIST_SYNC"
-	threadMemberUpdateEventType        = "THREAD_MEMBER_UPDATE"
-	threadMembersUpdateEventType       = "THREAD_MEMBERS_UPDATE"
-	threadUpdateEventType              = "THREAD_UPDATE"
-	typingStartEventType               = "TYPING_START"
-	userGuildSettingsUpdateEventType   = "USER_GUILD_SETTINGS_UPDATE"
-	userNoteUpdateEventType            = "USER_NOTE_UPDATE"
-	userSettingsUpdateEventType        = "USER_SETTINGS_UPDATE"
-	userUpdateEventType                = "USER_UPDATE"
-	voiceServerUpdateEventType         = "VOICE_SERVER_UPDATE"
-	voiceStateUpdateEventType          = "VOICE_STATE_UPDATE"
-	webhooksUpdateEventType            = "WEBHOOKS_UPDATE"
+	channelCreateEventType                 = "CHANNEL_CREATE"
+	channelDeleteEventType                 = "CHANNEL_DELETE"
+	channelPinsUpdateEventType             = "CHANNEL_PINS_UPDATE"
+	channelUpdateEventType                 = "CHANNEL_UPDATE"
+	connectEventType                       = "__CONNECT__"
+	disconnectEventType                    = "__DISCONNECT__"
+	eventEventType                         = "__EVENT__"
+	guildBanAddEventType                   = "GUILD_BAN_ADD"
+	guildBanRemoveEventType                = "GUILD_BAN_REMOVE"
+	guildCreateEventType                   = "GUILD_CREATE"
+	guildDeleteEventType                   = "GUILD_DELETE"
+	guildEmojisUpdateEventType             = "GUILD_EMOJIS_UPDATE"
+	guildIntegrationsUpdateEventType       = "GUILD_INTEGRATIONS_UPDATE"
+	guildMemberAddEventType                = "GUILD_MEMBER_ADD"
+	guildMemberRemoveEventType             = "GUILD_MEMBER_REMOVE"
+	guildMemberUpdateEventType             = "GUILD_MEMBER_UPDATE"
+	guildMembersChunkEventType             = "GUILD_MEMBERS_CHUNK"
+	guildRoleCreateEventType               = "GUILD_ROLE_CREATE"
+	guildRoleDeleteEventType               = "GUILD_ROLE_DELETE"
+	guildRoleUpdateEventType               = "GUILD_ROLE_UPDATE"
+	guildStageInstanceCreateEventType      = "STAGE_INSTANCE_CREATE"
+	guildStageInstanceUpdateEventType      = "STAGE_INSTANCE_UPDATE"
+	guildStageInstanceDeleteEventType      = "STAGE_INSTANCE_DELETE"
+	guildScheduledEventCreateEventType     = "GUILD_SCHEDULED_EVENT_CREATE"
+	guildScheduledEventDeleteEventType     = "GUILD_SCHEDULED_EVENT_DELETE"
+	guildScheduledEventUpdateEventType     = "GUILD_SCHEDULED_EVENT_UPDATE"
+	guildScheduledEventUserAddEventType    = "GUILD_SCHEDULED_EVENT_USER_ADD"
+	guildScheduledEventUserRemoveEventType = "GUILD_SCHEDULED_EVENT_USER_REMOVE"
+	guildUpdateEventType                   = "GUILD_UPDATE"
+	interactionCreateEventType             = "INTERACTION_CREATE"
+	inviteCreateEventType                  = "INVITE_CREATE"
+	inviteDeleteEventType                  = "INVITE_DELETE"
+	messageAckEventType                    = "MESSAGE_ACK"
+	messageCreateEventType                 = "MESSAGE_CREATE"
+	messageDeleteEventType                 = "MESSAGE_DELETE"
+	messageDeleteBulkEventType             = "MESSAGE_DELETE_BULK"
+	messageReactionAddEventType            = "MESSAGE_REACTION_ADD"
+	messageReactionRemoveEventType         = "MESSAGE_REACTION_REMOVE"
+	messageReactionRemoveAllEventType      = "MESSAGE_REACTION_REMOVE_ALL"
+	messageUpdateEventType                 = "MESSAGE_UPDATE"
+	presenceUpdateEventType                = "PRESENCE_UPDATE"
+	presencesReplaceEventType              = "PRESENCES_REPLACE"
+	rateLimitEventType                     = "__RATE_LIMIT__"
+	readyEventType                         = "READY"
+	relationshipAddEventType               = "RELATIONSHIP_ADD"
+	relationshipRemoveEventType            = "RELATIONSHIP_REMOVE"
+	resumedEventType                       = "RESUMED"
+	threadCreateEventType                  = "THREAD_CREATE"
+	threadDeleteEventType                  = "THREAD_DELETE"
+	threadListSyncEventType                = "THREAD_LIST_SYNC"
+	threadMemberUpdateEventType            = "THREAD_MEMBER_UPDATE"
+	threadMembersUpdateEventType           = "THREAD_MEMBERS_UPDATE"
+	threadUpdateEventType                  = "THREAD_UPDATE"
+	typingStartEventType                   = "TYPING_START"
+	userGuildSettingsUpdateEventType       = "USER_GUILD_SETTINGS_UPDATE"
+	userNoteUpdateEventType                = "USER_NOTE_UPDATE"
+	userSettingsUpdateEventType            = "USER_SETTINGS_UPDATE"
+	userUpdateEventType                    = "USER_UPDATE"
+	voiceServerUpdateEventType             = "VOICE_SERVER_UPDATE"
+	voiceStateUpdateEventType              = "VOICE_STATE_UPDATE"
+	webhooksUpdateEventType                = "WEBHOOKS_UPDATE"
 )
 
 // channelCreateEventHandler is an event handler for ChannelCreate events.
@@ -310,66 +315,6 @@ func (eh guildIntegrationsUpdateEventHandler) Handle(s *Session, i interface{})
 	}
 }
 
-// guildScheduledEventCreateEventHandler is an event handler for GuildScheduledEventCreate events.
-type guildScheduledEventCreateEventHandler func(*Session, *GuildScheduledEventCreate)
-
-// Type returns the event type for GuildScheduledEventCreate events.
-func (eh guildScheduledEventCreateEventHandler) Type() string {
-	return guildScheduledEventCreateEventType
-}
-
-// New returns a new instance of GuildScheduledEventCreate.
-func (eh guildScheduledEventCreateEventHandler) New() interface{} {
-	return &GuildScheduledEventCreate{}
-}
-
-// Handle is the handler for GuildScheduledEventCreate events.
-func (eh guildScheduledEventCreateEventHandler) Handle(s *Session, i interface{}) {
-	if t, ok := i.(*GuildScheduledEventCreate); ok {
-		eh(s, t)
-	}
-}
-
-// guildScheduledEventUpdateEventHandler is an event handler for GuildScheduledEventUpdate events.
-type guildScheduledEventUpdateEventHandler func(*Session, *GuildScheduledEventUpdate)
-
-// Type returns the event type for GuildScheduledEventUpdate events.
-func (eh guildScheduledEventUpdateEventHandler) Type() string {
-	return guildScheduledEventUpdateEventType
-}
-
-// New returns a new instance of GuildScheduledEventUpdate.
-func (eh guildScheduledEventUpdateEventHandler) New() interface{} {
-	return &GuildScheduledEventUpdate{}
-}
-
-// Handle is the handler for GuildScheduledEventUpdate events.
-func (eh guildScheduledEventUpdateEventHandler) Handle(s *Session, i interface{}) {
-	if t, ok := i.(*GuildScheduledEventUpdate); ok {
-		eh(s, t)
-	}
-}
-
-// guildScheduledEventDeleteEventHandler is an event handler for GuildScheduledEventDelete events.
-type guildScheduledEventDeleteEventHandler func(*Session, *GuildScheduledEventDelete)
-
-// Type returns the event type for GuildScheduledEventDelete events.
-func (eh guildScheduledEventDeleteEventHandler) Type() string {
-	return guildScheduledEventDeleteEventType
-}
-
-// New returns a new instance of GuildScheduledEventDelete.
-func (eh guildScheduledEventDeleteEventHandler) New() interface{} {
-	return &GuildScheduledEventDelete{}
-}
-
-// Handle is the handler for GuildScheduledEventDelete events.
-func (eh guildScheduledEventDeleteEventHandler) Handle(s *Session, i interface{}) {
-	if t, ok := i.(*GuildScheduledEventDelete); ok {
-		eh(s, t)
-	}
-}
-
 // guildMemberAddEventHandler is an event handler for GuildMemberAdd events.
 type guildMemberAddEventHandler func(*Session, *GuildMemberAdd)
 
@@ -510,6 +455,166 @@ func (eh guildRoleUpdateEventHandler) Handle(s *Session, i interface{}) {
 	}
 }
 
+// guildStageInstanceEventCreateHandler is an event handler for StageInstanceEventCreate events.
+type guildStageInstanceEventCreateHandler func(*Session, *StageInstanceEventCreate)
+
+// Type returns the event type for StageInstanceEventCreate events.
+func (eh guildStageInstanceEventCreateHandler) Type() string {
+	return guildStageInstanceCreateEventType
+}
+
+// New returns a new instance of StageInstanceEventCreate.
+func (eh guildStageInstanceEventCreateHandler) New() interface{} {
+	return &StageInstanceEventCreate{}
+}
+
+// Handle is the handler for StageInstanceEventCreate events.
+func (eh guildStageInstanceEventCreateHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*StageInstanceEventCreate); ok {
+		eh(s, t)
+	}
+}
+
+// guildStageInstanceEventUpdateHandler is an event handler for StageInstanceEventUpdate events.
+type guildStageInstanceEventUpdateHandler func(*Session, *StageInstanceEventUpdate)
+
+// Type returns the event type for StageInstanceEventUpdate events.
+func (eh guildStageInstanceEventUpdateHandler) Type() string {
+	return guildStageInstanceCreateEventType
+}
+
+// New returns a new instance of StageInstanceEventUpdate.
+func (eh guildStageInstanceEventUpdateHandler) New() interface{} {
+	return &StageInstanceEventUpdate{}
+}
+
+// Handle is the handler for StageInstanceEventUpdate events.
+func (eh guildStageInstanceEventUpdateHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*StageInstanceEventUpdate); ok {
+		eh(s, t)
+	}
+}
+
+// guildStageInstanceEventDeleteHandler is an event handler for StageInstanceEventDelete events.
+type guildStageInstanceEventDeleteHandler func(*Session, *StageInstanceEventDelete)
+
+// Type returns the event type for StageInstanceEventDelete events.
+func (eh guildStageInstanceEventDeleteHandler) Type() string {
+	return guildStageInstanceCreateEventType
+}
+
+// New returns a new instance of StageInstanceEventDelete.
+func (eh guildStageInstanceEventDeleteHandler) New() interface{} {
+	return &StageInstanceEventDelete{}
+}
+
+// Handle is the handler for StageInstanceEventDelete events.
+func (eh guildStageInstanceEventDeleteHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*StageInstanceEventDelete); ok {
+		eh(s, t)
+	}
+}
+
+// guildScheduledEventCreateEventHandler is an event handler for GuildScheduledEventCreate events.
+type guildScheduledEventCreateEventHandler func(*Session, *GuildScheduledEventCreate)
+
+// Type returns the event type for GuildScheduledEventCreate events.
+func (eh guildScheduledEventCreateEventHandler) Type() string {
+	return guildScheduledEventCreateEventType
+}
+
+// New returns a new instance of GuildScheduledEventCreate.
+func (eh guildScheduledEventCreateEventHandler) New() interface{} {
+	return &GuildScheduledEventCreate{}
+}
+
+// Handle is the handler for GuildScheduledEventCreate events.
+func (eh guildScheduledEventCreateEventHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*GuildScheduledEventCreate); ok {
+		eh(s, t)
+	}
+}
+
+// guildScheduledEventDeleteEventHandler is an event handler for GuildScheduledEventDelete events.
+type guildScheduledEventDeleteEventHandler func(*Session, *GuildScheduledEventDelete)
+
+// Type returns the event type for GuildScheduledEventDelete events.
+func (eh guildScheduledEventDeleteEventHandler) Type() string {
+	return guildScheduledEventDeleteEventType
+}
+
+// New returns a new instance of GuildScheduledEventDelete.
+func (eh guildScheduledEventDeleteEventHandler) New() interface{} {
+	return &GuildScheduledEventDelete{}
+}
+
+// Handle is the handler for GuildScheduledEventDelete events.
+func (eh guildScheduledEventDeleteEventHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*GuildScheduledEventDelete); ok {
+		eh(s, t)
+	}
+}
+
+// guildScheduledEventUpdateEventHandler is an event handler for GuildScheduledEventUpdate events.
+type guildScheduledEventUpdateEventHandler func(*Session, *GuildScheduledEventUpdate)
+
+// Type returns the event type for GuildScheduledEventUpdate events.
+func (eh guildScheduledEventUpdateEventHandler) Type() string {
+	return guildScheduledEventUpdateEventType
+}
+
+// New returns a new instance of GuildScheduledEventUpdate.
+func (eh guildScheduledEventUpdateEventHandler) New() interface{} {
+	return &GuildScheduledEventUpdate{}
+}
+
+// Handle is the handler for GuildScheduledEventUpdate events.
+func (eh guildScheduledEventUpdateEventHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*GuildScheduledEventUpdate); ok {
+		eh(s, t)
+	}
+}
+
+// guildScheduledEventUserAddEventHandler is an event handler for GuildScheduledEventUserAdd events.
+type guildScheduledEventUserAddEventHandler func(*Session, *GuildScheduledEventUserAdd)
+
+// Type returns the event type for GuildScheduledEventUserAdd events.
+func (eh guildScheduledEventUserAddEventHandler) Type() string {
+	return guildScheduledEventUserAddEventType
+}
+
+// New returns a new instance of GuildScheduledEventUserAdd.
+func (eh guildScheduledEventUserAddEventHandler) New() interface{} {
+	return &GuildScheduledEventUserAdd{}
+}
+
+// Handle is the handler for GuildScheduledEventUserAdd events.
+func (eh guildScheduledEventUserAddEventHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*GuildScheduledEventUserAdd); ok {
+		eh(s, t)
+	}
+}
+
+// guildScheduledEventUserRemoveEventHandler is an event handler for GuildScheduledEventUserRemove events.
+type guildScheduledEventUserRemoveEventHandler func(*Session, *GuildScheduledEventUserRemove)
+
+// Type returns the event type for GuildScheduledEventUserRemove events.
+func (eh guildScheduledEventUserRemoveEventHandler) Type() string {
+	return guildScheduledEventUserRemoveEventType
+}
+
+// New returns a new instance of GuildScheduledEventUserRemove.
+func (eh guildScheduledEventUserRemoveEventHandler) New() interface{} {
+	return &GuildScheduledEventUserRemove{}
+}
+
+// Handle is the handler for GuildScheduledEventUserRemove events.
+func (eh guildScheduledEventUserRemoveEventHandler) Handle(s *Session, i interface{}) {
+	if t, ok := i.(*GuildScheduledEventUserRemove); ok {
+		eh(s, t)
+	}
+}
+
 // guildUpdateEventHandler is an event handler for GuildUpdate events.
 type guildUpdateEventHandler func(*Session, *GuildUpdate)
 
@@ -1195,12 +1300,6 @@ func handlerForInterface(handler interface{}) EventHandler {
 		return guildEmojisUpdateEventHandler(v)
 	case func(*Session, *GuildIntegrationsUpdate):
 		return guildIntegrationsUpdateEventHandler(v)
-	case func(*Session, *GuildScheduledEventCreate):
-		return guildScheduledEventCreateEventHandler(v)
-	case func(*Session, *GuildScheduledEventUpdate):
-		return guildScheduledEventUpdateEventHandler(v)
-	case func(*Session, *GuildScheduledEventDelete):
-		return guildScheduledEventDeleteEventHandler(v)
 	case func(*Session, *GuildMemberAdd):
 		return guildMemberAddEventHandler(v)
 	case func(*Session, *GuildMemberRemove):
@@ -1215,6 +1314,16 @@ func handlerForInterface(handler interface{}) EventHandler {
 		return guildRoleDeleteEventHandler(v)
 	case func(*Session, *GuildRoleUpdate):
 		return guildRoleUpdateEventHandler(v)
+	case func(*Session, *GuildScheduledEventCreate):
+		return guildScheduledEventCreateEventHandler(v)
+	case func(*Session, *GuildScheduledEventDelete):
+		return guildScheduledEventDeleteEventHandler(v)
+	case func(*Session, *GuildScheduledEventUpdate):
+		return guildScheduledEventUpdateEventHandler(v)
+	case func(*Session, *GuildScheduledEventUserAdd):
+		return guildScheduledEventUserAddEventHandler(v)
+	case func(*Session, *GuildScheduledEventUserRemove):
+		return guildScheduledEventUserRemoveEventHandler(v)
 	case func(*Session, *GuildUpdate):
 		return guildUpdateEventHandler(v)
 	case func(*Session, *InteractionCreate):
@@ -1297,9 +1406,6 @@ func init() {
 	registerInterfaceProvider(guildDeleteEventHandler(nil))
 	registerInterfaceProvider(guildEmojisUpdateEventHandler(nil))
 	registerInterfaceProvider(guildIntegrationsUpdateEventHandler(nil))
-	registerInterfaceProvider(guildScheduledEventCreateEventHandler(nil))
-	registerInterfaceProvider(guildScheduledEventUpdateEventHandler(nil))
-	registerInterfaceProvider(guildScheduledEventDeleteEventHandler(nil))
 	registerInterfaceProvider(guildMemberAddEventHandler(nil))
 	registerInterfaceProvider(guildMemberRemoveEventHandler(nil))
 	registerInterfaceProvider(guildMemberUpdateEventHandler(nil))
@@ -1307,6 +1413,11 @@ func init() {
 	registerInterfaceProvider(guildRoleCreateEventHandler(nil))
 	registerInterfaceProvider(guildRoleDeleteEventHandler(nil))
 	registerInterfaceProvider(guildRoleUpdateEventHandler(nil))
+	registerInterfaceProvider(guildScheduledEventCreateEventHandler(nil))
+	registerInterfaceProvider(guildScheduledEventDeleteEventHandler(nil))
+	registerInterfaceProvider(guildScheduledEventUpdateEventHandler(nil))
+	registerInterfaceProvider(guildScheduledEventUserAddEventHandler(nil))
+	registerInterfaceProvider(guildScheduledEventUserRemoveEventHandler(nil))
 	registerInterfaceProvider(guildUpdateEventHandler(nil))
 	registerInterfaceProvider(interactionCreateEventHandler(nil))
 	registerInterfaceProvider(inviteCreateEventHandler(nil))

vendor/github.com/bwmarrin/discordgo/events.go

@@ -191,7 +191,9 @@ type GuildMembersChunk struct {
 	Members    []*Member   `json:"members"`
 	ChunkIndex int         `json:"chunk_index"`
 	ChunkCount int         `json:"chunk_count"`
+	NotFound   []string    `json:"not_found,omitempty"`
 	Presences  []*Presence `json:"presences,omitempty"`
+	Nonce      string      `json:"nonce,omitempty"`
 }
 
 // GuildIntegrationsUpdate is the data for a GuildIntegrationsUpdate event.
@@ -199,6 +201,21 @@ type GuildIntegrationsUpdate struct {
 	GuildID string `json:"guild_id"`
 }
 
+// StageInstanceEventCreate is the data for a StageInstanceEventCreate event.
+type StageInstanceEventCreate struct {
+	*StageInstance
+}
+
+// StageInstanceEventUpdate is the data for a StageInstanceEventUpdate event.
+type StageInstanceEventUpdate struct {
+	*StageInstance
+}
+
+// StageInstanceEventDelete is the data for a StageInstanceEventDelete event.
+type StageInstanceEventDelete struct {
+	*StageInstance
+}
+
 // GuildScheduledEventCreate is the data for a GuildScheduledEventCreate event.
 type GuildScheduledEventCreate struct {
 	*GuildScheduledEvent
@@ -214,6 +231,20 @@ type GuildScheduledEventDelete struct {
 	*GuildScheduledEvent
 }
 
+// GuildScheduledEventUserAdd is the data for a GuildScheduledEventUserAdd event.
+type GuildScheduledEventUserAdd struct {
+	GuildScheduledEventID string `json:"guild_scheduled_event_id"`
+	UserID                string `json:"user_id"`
+	GuildID               string `json:"guild_id"`
+}
+
+// GuildScheduledEventUserRemove is the data for a GuildScheduledEventUserRemove event.
+type GuildScheduledEventUserRemove struct {
+	GuildScheduledEventID string `json:"guild_scheduled_event_id"`
+	UserID                string `json:"user_id"`
+	GuildID               string `json:"guild_id"`
+}
+
 // MessageAck is the data for a MessageAck event.
 type MessageAck struct {
 	MessageID string `json:"message_id"`

vendor/github.com/bwmarrin/discordgo/interactions.go

@@ -35,12 +35,14 @@ type ApplicationCommand struct {
 	Version           string                 `json:"version,omitempty"`
 	Type              ApplicationCommandType `json:"type,omitempty"`
 	Name              string                 `json:"name"`
+	NameLocalizations *map[Locale]string     `json:"name_localizations,omitempty"`
 	DefaultPermission *bool                  `json:"default_permission,omitempty"`
 
 	// NOTE: Chat commands only. Otherwise it mustn't be set.
 
-	Description string                      `json:"description,omitempty"`
-	Options     []*ApplicationCommandOption `json:"options"`
+	Description              string                      `json:"description,omitempty"`
+	DescriptionLocalizations *map[Locale]string          `json:"description_localizations,omitempty"`
+	Options                  []*ApplicationCommandOption `json:"options"`
 }
 
 // ApplicationCommandOptionType indicates the type of a slash command's option.
@@ -91,9 +93,11 @@ func (t ApplicationCommandOptionType) String() string {
 
 // ApplicationCommandOption represents an option/subcommand/subcommands group.
 type ApplicationCommandOption struct {
-	Type        ApplicationCommandOptionType `json:"type"`
-	Name        string                       `json:"name"`
-	Description string                       `json:"description,omitempty"`
+	Type                     ApplicationCommandOptionType `json:"type"`
+	Name                     string                       `json:"name"`
+	NameLocalizations        map[Locale]string            `json:"name_localizations,omitempty"`
+	Description              string                       `json:"description,omitempty"`
+	DescriptionLocalizations map[Locale]string            `json:"description_localizations,omitempty"`
 	// NOTE: This feature was on the API, but at some point developers decided to remove it.
 	// So I commented it, until it will be officially on the docs.
 	// Default     bool                              `json:"default"`
@@ -113,8 +117,9 @@ type ApplicationCommandOption struct {
 
 // ApplicationCommandOptionChoice represents a slash command option choice.
 type ApplicationCommandOptionChoice struct {
-	Name  string      `json:"name"`
-	Value interface{} `json:"value"`
+	Name              string            `json:"name"`
+	NameLocalizations map[Locale]string `json:"name_localizations,omitempty"`
+	Value             interface{}       `json:"value"`
 }
 
 // ApplicationCommandPermissions represents a single user or role permission for a command.
@@ -175,6 +180,7 @@ func (t InteractionType) String() string {
 // Interaction represents data of an interaction.
 type Interaction struct {
 	ID        string          `json:"id"`
+	AppID     string          `json:"application_id"`
 	Type      InteractionType `json:"type"`
 	Data      InteractionData `json:"data"`
 	GuildID   string          `json:"guild_id"`
@@ -509,7 +515,7 @@ type InteractionResponseData struct {
 	TTS             bool                    `json:"tts"`
 	Content         string                  `json:"content"`
 	Components      []MessageComponent      `json:"components"`
-	Embeds          []*MessageEmbed         `json:"embeds,omitempty"`
+	Embeds          []*MessageEmbed         `json:"embeds"`
 	AllowedMentions *MessageAllowedMentions `json:"allowed_mentions,omitempty"`
 	Flags           uint64                  `json:"flags,omitempty"`
 	Files           []*File                 `json:"-"`

vendor/github.com/bwmarrin/discordgo/message.go

@@ -199,7 +199,9 @@ const (
 	MessageFlagsCrossPosted MessageFlags = 1 << 0
 	// MessageFlagsIsCrossPosted this message originated from a message in another channel (via Channel Following).
 	MessageFlagsIsCrossPosted MessageFlags = 1 << 1
-	// MessageFlagsSupressEmbeds do not include any embeds when serializing this message.
+	// MessageFlagsSuppressEmbeds do not include any embeds when serializing this message.
+	MessageFlagsSuppressEmbeds MessageFlags = 1 << 2
+	// TODO: deprecated, remove when compatibility is not needed
 	MessageFlagsSupressEmbeds MessageFlags = 1 << 2
 	// MessageFlagsSourceMessageDeleted the source message for this crosspost has been deleted (via Channel Following).
 	MessageFlagsSourceMessageDeleted MessageFlags = 1 << 3
@@ -225,7 +227,7 @@ type File struct {
 // MessageSend stores all parameters you can send with ChannelMessageSendComplex.
 type MessageSend struct {
 	Content         string                  `json:"content,omitempty"`
-	Embeds          []*MessageEmbed         `json:"embeds,omitempty"`
+	Embeds          []*MessageEmbed         `json:"embeds"`
 	TTS             bool                    `json:"tts"`
 	Components      []MessageComponent      `json:"components"`
 	Files           []*File                 `json:"-"`
@@ -244,8 +246,9 @@ type MessageSend struct {
 type MessageEdit struct {
 	Content         *string                 `json:"content,omitempty"`
 	Components      []MessageComponent      `json:"components"`
-	Embeds          []*MessageEmbed         `json:"embeds,omitempty"`
+	Embeds          []*MessageEmbed         `json:"embeds"`
 	AllowedMentions *MessageAllowedMentions `json:"allowed_mentions,omitempty"`
+	Flags           MessageFlags            `json:"flags,omitempty"`
 
 	ID      string
 	Channel string
@@ -342,7 +345,7 @@ type MessageEmbedFooter struct {
 
 // MessageEmbedImage is a part of a MessageEmbed struct.
 type MessageEmbedImage struct {
-	URL      string `json:"url,omitempty"`
+	URL      string `json:"url"`
 	ProxyURL string `json:"proxy_url,omitempty"`
 	Width    int    `json:"width,omitempty"`
 	Height   int    `json:"height,omitempty"`
@@ -350,7 +353,7 @@ type MessageEmbedImage struct {
 
 // MessageEmbedThumbnail is a part of a MessageEmbed struct.
 type MessageEmbedThumbnail struct {
-	URL      string `json:"url,omitempty"`
+	URL      string `json:"url"`
 	ProxyURL string `json:"proxy_url,omitempty"`
 	Width    int    `json:"width,omitempty"`
 	Height   int    `json:"height,omitempty"`
@@ -372,7 +375,7 @@ type MessageEmbedProvider struct {
 // MessageEmbedAuthor is a part of a MessageEmbed struct.
 type MessageEmbedAuthor struct {
 	URL          string `json:"url,omitempty"`
-	Name         string `json:"name,omitempty"`
+	Name         string `json:"name"`
 	IconURL      string `json:"icon_url,omitempty"`
 	ProxyIconURL string `json:"proxy_icon_url,omitempty"`
 }

vendor/github.com/bwmarrin/discordgo/restapi.go

@@ -39,6 +39,59 @@ var (
 	ErrUnauthorized            = errors.New("HTTP request was unauthorized. This could be because the provided token was not a bot token. Please add \"Bot \" to the start of your token. https://discord.com/developers/docs/reference#authentication-example-bot-token-authorization-header")
 )
 
+var (
+	// Marshal defines function used to encode JSON payloads
+	Marshal func(v interface{}) ([]byte, error) = json.Marshal
+	// Unmarshal defines function used to decode JSON payloads
+	Unmarshal func(src []byte, v interface{}) error = json.Unmarshal
+)
+
+// RESTError stores error information about a request with a bad response code.
+// Message is not always present, there are cases where api calls can fail
+// without returning a json message.
+type RESTError struct {
+	Request      *http.Request
+	Response     *http.Response
+	ResponseBody []byte
+
+	Message *APIErrorMessage // Message may be nil.
+}
+
+// newRestError returns a new REST API error.
+func newRestError(req *http.Request, resp *http.Response, body []byte) *RESTError {
+	restErr := &RESTError{
+		Request:      req,
+		Response:     resp,
+		ResponseBody: body,
+	}
+
+	// Attempt to decode the error and assume no message was provided if it fails
+	var msg *APIErrorMessage
+	err := Unmarshal(body, &msg)
+	if err == nil {
+		restErr.Message = msg
+	}
+
+	return restErr
+}
+
+// Error returns a Rest API Error with its status code and body.
+func (r RESTError) Error() string {
+	return "HTTP " + r.Response.Status + ", " + string(r.ResponseBody)
+}
+
+// RateLimitError is returned when a request exceeds a rate limit
+// and ShouldRetryOnRateLimit is false. The request may be manually
+// retried after waiting the duration specified by RetryAfter.
+type RateLimitError struct {
+	*RateLimit
+}
+
+// Error returns a rate limit error with rate limited endpoint and retry time.
+func (e RateLimitError) Error() string {
+	return "Rate limit exceeded on " + e.URL + ", retry after " + e.RetryAfter.String()
+}
+
 // Request is the same as RequestWithBucketID but the bucket id is the same as the urlStr
 func (s *Session) Request(method, urlStr string, data interface{}) (response []byte, err error) {
 	return s.RequestWithBucketID(method, urlStr, data, strings.SplitN(urlStr, "?", 2)[0])
@@ -48,7 +101,7 @@ func (s *Session) Request(method, urlStr string, data interface{}) (response []b
 func (s *Session) RequestWithBucketID(method, urlStr string, data interface{}, bucketID string) (response []byte, err error) {
 	var body []byte
 	if data != nil {
-		body, err = json.Marshal(data)
+		body, err = Marshal(data)
 		if err != nil {
 			return
 		}
@@ -108,7 +161,7 @@ func (s *Session) RequestWithLockedBucket(method, urlStr, contentType string, b
 	}
 	defer func() {
 		err2 := resp.Body.Close()
-		if err2 != nil {
+		if s.Debug && err2 != nil {
 			log.Println("error closing resp body")
 		}
 	}()
@@ -147,19 +200,24 @@ func (s *Session) RequestWithLockedBucket(method, urlStr, contentType string, b
 		}
 	case 429: // TOO MANY REQUESTS - Rate limiting
 		rl := TooManyRequests{}
-		err = json.Unmarshal(response, &rl)
+		err = Unmarshal(response, &rl)
 		if err != nil {
 			s.log(LogError, "rate limit unmarshal error, %s", err)
 			return
 		}
-		s.log(LogInformational, "Rate Limiting %s, retry in %v", urlStr, rl.RetryAfter)
-		s.handleEvent(rateLimitEventType, &RateLimit{TooManyRequests: &rl, URL: urlStr})
 
-		time.Sleep(rl.RetryAfter)
-		// we can make the above smarter
-		// this method can cause longer delays than required
+		if s.ShouldRetryOnRateLimit {
+			s.log(LogInformational, "Rate Limiting %s, retry in %v", urlStr, rl.RetryAfter)
+			s.handleEvent(rateLimitEventType, &RateLimit{TooManyRequests: &rl, URL: urlStr})
 
-		response, err = s.RequestWithLockedBucket(method, urlStr, contentType, b, s.Ratelimiter.LockBucketObject(bucket), sequence)
+			time.Sleep(rl.RetryAfter)
+			// we can make the above smarter
+			// this method can cause longer delays than required
+
+			response, err = s.RequestWithLockedBucket(method, urlStr, contentType, b, s.Ratelimiter.LockBucketObject(bucket), sequence)
+		} else {
+			err = &RateLimitError{&RateLimit{TooManyRequests: &rl, URL: urlStr}}
+		}
 	case http.StatusUnauthorized:
 		if strings.Index(s.Token, "Bot ") != 0 {
 			s.log(LogInformational, ErrUnauthorized.Error())
@@ -174,7 +232,7 @@ func (s *Session) RequestWithLockedBucket(method, urlStr, contentType string, b
 }
 
 func unmarshal(data []byte, v interface{}) error {
-	err := json.Unmarshal(data, v)
+	err := Unmarshal(data, v)
 	if err != nil {
 		return fmt.Errorf("%w: %s", ErrJSONUnmarshal, err)
 	}
@@ -438,6 +496,19 @@ func (s *Session) Guild(guildID string) (st *Guild, err error) {
 	return
 }
 
+// GuildWithCounts returns a Guild structure of a specific Guild with approximate member and presence counts.
+// guildID    : The ID of a Guild
+func (s *Session) GuildWithCounts(guildID string) (st *Guild, err error) {
+
+	body, err := s.RequestWithBucketID("GET", EndpointGuild(guildID)+"?with_counts=true", nil, EndpointGuild(guildID))
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &st)
+	return
+}
+
 // GuildPreview returns a GuildPreview structure of a specific public Guild.
 // guildID   : The ID of a Guild
 func (s *Session) GuildPreview(guildID string) (st *GuildPreview, err error) {
@@ -481,7 +552,7 @@ func (s *Session) GuildEdit(guildID string, g GuildParams) (st *Guild, err error
 		}
 	}
 
-	//Bounds checking for regions
+	// Bounds checking for regions
 	if g.Region != "" {
 		isValid := false
 		regions, _ := s.VoiceRegions()
@@ -530,12 +601,30 @@ func (s *Session) GuildLeave(guildID string) (err error) {
 	return
 }
 
-// GuildBans returns an array of GuildBan structures for all bans of a
-// given guild.
-// guildID   : The ID of a Guild.
-func (s *Session) GuildBans(guildID string) (st []*GuildBan, err error) {
+// GuildBans returns an array of GuildBan structures for bans in the given guild.
+//  guildID   : The ID of a Guild
+//  limit     : Max number of bans to return (max 1000)
+//  beforeID  : If not empty all returned users will be after the given id
+//  afterID   : If not empty all returned users will be before the given id
+func (s *Session) GuildBans(guildID string, limit int, beforeID, afterID string) (st []*GuildBan, err error) {
+	uri := EndpointGuildBans(guildID)
 
-	body, err := s.RequestWithBucketID("GET", EndpointGuildBans(guildID), nil, EndpointGuildBans(guildID))
+	v := url.Values{}
+	if limit != 0 {
+		v.Set("limit", strconv.Itoa(limit))
+	}
+	if beforeID != "" {
+		v.Set("before", beforeID)
+	}
+	if afterID != "" {
+		v.Set("after", afterID)
+	}
+
+	if len(v) > 0 {
+		uri += "?" + v.Encode()
+	}
+
+	body, err := s.RequestWithBucketID("GET", uri, nil, EndpointGuildBans(guildID))
 	if err != nil {
 		return
 	}
@@ -631,6 +720,29 @@ func (s *Session) GuildMembers(guildID string, after string, limit int) (st []*M
 	return
 }
 
+// GuildMembersSearch returns a list of guild member objects whose username or nickname starts with a provided string
+// guildID  : The ID of a Guild
+// query    : Query string to match username(s) and nickname(s) against
+// limit    : Max number of members to return (default 1, min 1, max 1000)
+func (s *Session) GuildMembersSearch(guildID, query string, limit int) (st []*Member, err error) {
+
+	uri := EndpointGuildMembersSearch(guildID)
+
+	queryParams := url.Values{}
+	queryParams.Set("query", query)
+	if limit > 1 {
+		queryParams.Set("limit", strconv.Itoa(limit))
+	}
+
+	body, err := s.RequestWithBucketID("GET", uri+"?"+queryParams.Encode(), nil, uri)
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &st)
+	return
+}
+
 // GuildMember returns a member of a guild.
 //  guildID   : The ID of a Guild.
 //  userID    : The ID of a User
@@ -710,6 +822,21 @@ func (s *Session) GuildMemberEdit(guildID, userID string, roles []string) (err e
 	return
 }
 
+// GuildMemberEditComplex edits the nickname and roles of a member.
+// guildID  : The ID of a Guild.
+// userID   : The ID of a User.
+// data     : A GuildMemberEditData struct with the new nickname and roles
+func (s *Session) GuildMemberEditComplex(guildID, userID string, data GuildMemberParams) (st *Member, err error) {
+	var body []byte
+	body, err = s.RequestWithBucketID("PATCH", EndpointGuildMember(guildID, userID), data, EndpointGuildMember(guildID, ""))
+	if err != nil {
+		return nil, err
+	}
+
+	err = unmarshal(body, &st)
+	return
+}
+
 // GuildMemberMove moves a guild member from one voice channel to another/none
 //  guildID   : The ID of a Guild.
 //  userID    : The ID of a User.
@@ -1218,6 +1345,20 @@ func (s *Session) GuildEmojis(guildID string) (emoji []*Emoji, err error) {
 	return
 }
 
+// GuildEmoji returns specified emoji.
+// guildID : The ID of a Guild
+// emojiID : The ID of an Emoji to retrieve
+func (s *Session) GuildEmoji(guildID, emojiID string) (emoji *Emoji, err error) {
+	var body []byte
+	body, err = s.RequestWithBucketID("GET", EndpointGuildEmoji(guildID, emojiID), nil, EndpointGuildEmoji(guildID, emojiID))
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &emoji)
+	return
+}
+
 // GuildEmojiCreate creates a new emoji
 // guildID : The ID of a Guild.
 // name    : The Name of the Emoji.
@@ -1244,12 +1385,12 @@ func (s *Session) GuildEmojiCreate(guildID, name, image string, roles []string)
 // guildID : The ID of a Guild.
 // emojiID : The ID of an Emoji.
 // name    : The Name of the Emoji.
-// roles   : The roles for which this emoji will be whitelisted, can be nil.
+// roles   : The roles for which this emoji will be whitelisted, if nil or empty the roles will be reset.
 func (s *Session) GuildEmojiEdit(guildID, emojiID, name string, roles []string) (emoji *Emoji, err error) {
 
 	data := struct {
 		Name  string   `json:"name"`
-		Roles []string `json:"roles,omitempty"`
+		Roles []string `json:"roles"`
 	}{name, roles}
 
 	body, err := s.RequestWithBucketID("PATCH", EndpointGuildEmoji(guildID, emojiID), data, EndpointGuildEmojis(guildID))
@@ -1851,6 +1992,37 @@ func (s *Session) InviteWithCounts(inviteID string) (st *Invite, err error) {
 	return
 }
 
+// InviteComplex returns an Invite structure of the given invite including specified fields.
+//  inviteID                  : The invite code
+//  guildScheduledEventID     : If specified, includes specified guild scheduled event.
+//  withCounts                : Whether to include approximate member counts or not
+//  withExpiration            : Whether to include expiration time or not
+func (s *Session) InviteComplex(inviteID, guildScheduledEventID string, withCounts, withExpiration bool) (st *Invite, err error) {
+	endpoint := EndpointInvite(inviteID)
+	v := url.Values{}
+	if guildScheduledEventID != "" {
+		v.Set("guild_scheduled_event_id", guildScheduledEventID)
+	}
+	if withCounts {
+		v.Set("with_counts", "true")
+	}
+	if withExpiration {
+		v.Set("with_expiration", "true")
+	}
+
+	if len(v) != 0 {
+		endpoint += "?" + v.Encode()
+	}
+
+	body, err := s.RequestWithBucketID("GET", endpoint, nil, EndpointInvite(""))
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &st)
+	return
+}
+
 // InviteDelete deletes an existing invite
 // inviteID   : the code of an invite
 func (s *Session) InviteDelete(inviteID string) (st *Invite, err error) {
@@ -2158,7 +2330,7 @@ func (s *Session) WebhookMessage(webhookID, token, messageID string) (message *M
 		return
 	}
 
-	err = json.Unmarshal(body, &message)
+	err = Unmarshal(body, &message)
 
 	return
 }
@@ -2207,7 +2379,7 @@ func (s *Session) WebhookMessageDelete(webhookID, token, messageID string) (err
 // MessageReactionAdd creates an emoji reaction to a message.
 // channelID : The channel ID.
 // messageID : The message ID.
-// emojiID   : Either the unicode emoji for the reaction, or a guild emoji identifier.
+// emojiID   : Either the unicode emoji for the reaction, or a guild emoji identifier in name:id format (e.g. "hello:1234567654321")
 func (s *Session) MessageReactionAdd(channelID, messageID, emojiID string) error {
 
 	// emoji such as  #⃣ need to have # escaped
@@ -2687,10 +2859,9 @@ func (s *Session) ApplicationCommandPermissionsBatchEdit(appID, guildID string,
 }
 
 // InteractionRespond creates the response to an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
 // resp        : Response message data.
-func (s *Session) InteractionRespond(interaction *Interaction, resp *InteractionResponse) (err error) {
+func (s *Session) InteractionRespond(interaction *Interaction, resp *InteractionResponse) error {
 	endpoint := EndpointInteractionResponse(interaction.ID, interaction.Token)
 
 	if resp.Data != nil && len(resp.Data.Files) > 0 {
@@ -2700,32 +2871,30 @@ func (s *Session) InteractionRespond(interaction *Interaction, resp *Interaction
 		}
 
 		_, err = s.request("POST", endpoint, contentType, body, endpoint, 0)
-	} else {
-		_, err = s.RequestWithBucketID("POST", endpoint, *resp, endpoint)
+		return err
 	}
+
+	_, err := s.RequestWithBucketID("POST", endpoint, *resp, endpoint)
 	return err
 }
 
 // InteractionResponse gets the response to an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
-func (s *Session) InteractionResponse(appID string, interaction *Interaction) (*Message, error) {
-	return s.WebhookMessage(appID, interaction.Token, "@original")
+func (s *Session) InteractionResponse(interaction *Interaction) (*Message, error) {
+	return s.WebhookMessage(interaction.AppID, interaction.Token, "@original")
 }
 
 // InteractionResponseEdit edits the response to an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
 // newresp     : Updated response message data.
-func (s *Session) InteractionResponseEdit(appID string, interaction *Interaction, newresp *WebhookEdit) (*Message, error) {
-	return s.WebhookMessageEdit(appID, interaction.Token, "@original", newresp)
+func (s *Session) InteractionResponseEdit(interaction *Interaction, newresp *WebhookEdit) (*Message, error) {
+	return s.WebhookMessageEdit(interaction.AppID, interaction.Token, "@original", newresp)
 }
 
 // InteractionResponseDelete deletes the response to an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
-func (s *Session) InteractionResponseDelete(appID string, interaction *Interaction) error {
-	endpoint := EndpointInteractionResponseActions(appID, interaction.Token)
+func (s *Session) InteractionResponseDelete(interaction *Interaction) error {
+	endpoint := EndpointInteractionResponseActions(interaction.AppID, interaction.Token)
 
 	_, err := s.RequestWithBucketID("DELETE", endpoint, nil, endpoint)
 
@@ -2733,29 +2902,76 @@ func (s *Session) InteractionResponseDelete(appID string, interaction *Interacti
 }
 
 // FollowupMessageCreate creates the followup message for an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
 // wait        : Waits for server confirmation of message send and ensures that the return struct is populated (it is nil otherwise)
 // data        : Data of the message to send.
-func (s *Session) FollowupMessageCreate(appID string, interaction *Interaction, wait bool, data *WebhookParams) (*Message, error) {
-	return s.WebhookExecute(appID, interaction.Token, wait, data)
+func (s *Session) FollowupMessageCreate(interaction *Interaction, wait bool, data *WebhookParams) (*Message, error) {
+	return s.WebhookExecute(interaction.AppID, interaction.Token, wait, data)
 }
 
 // FollowupMessageEdit edits a followup message of an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
 // messageID   : The followup message ID.
 // data        : Data to update the message
-func (s *Session) FollowupMessageEdit(appID string, interaction *Interaction, messageID string, data *WebhookEdit) (*Message, error) {
-	return s.WebhookMessageEdit(appID, interaction.Token, messageID, data)
+func (s *Session) FollowupMessageEdit(interaction *Interaction, messageID string, data *WebhookEdit) (*Message, error) {
+	return s.WebhookMessageEdit(interaction.AppID, interaction.Token, messageID, data)
 }
 
 // FollowupMessageDelete deletes a followup message of an interaction.
-// appID       : The application ID.
 // interaction : Interaction instance.
 // messageID   : The followup message ID.
-func (s *Session) FollowupMessageDelete(appID string, interaction *Interaction, messageID string) error {
-	return s.WebhookMessageDelete(appID, interaction.Token, messageID)
+func (s *Session) FollowupMessageDelete(interaction *Interaction, messageID string) error {
+	return s.WebhookMessageDelete(interaction.AppID, interaction.Token, messageID)
+}
+
+// ------------------------------------------------------------------------------------------------
+// Functions specific to stage instances
+// ------------------------------------------------------------------------------------------------
+
+// StageInstanceCreate creates and returns a new Stage instance associated to a Stage channel.
+// data : Parameters needed to create a stage instance.
+// data : The data of the Stage instance to create
+func (s *Session) StageInstanceCreate(data *StageInstanceParams) (si *StageInstance, err error) {
+	body, err := s.RequestWithBucketID("POST", EndpointStageInstances, data, EndpointStageInstances)
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &si)
+	return
+}
+
+// StageInstance will retrieve a Stage instance by ID of the Stage channel.
+// channelID : The ID of the Stage channel
+func (s *Session) StageInstance(channelID string) (si *StageInstance, err error) {
+	body, err := s.RequestWithBucketID("GET", EndpointStageInstance(channelID), nil, EndpointStageInstance(channelID))
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &si)
+	return
+}
+
+// StageInstanceEdit will edit a Stage instance by ID of the Stage channel.
+// channelID : The ID of the Stage channel
+// data : The data to edit the Stage instance
+func (s *Session) StageInstanceEdit(channelID string, data *StageInstanceParams) (si *StageInstance, err error) {
+
+	body, err := s.RequestWithBucketID("PATCH", EndpointStageInstance(channelID), data, EndpointStageInstance(channelID))
+	if err != nil {
+		return
+	}
+
+	err = unmarshal(body, &si)
+	return
+}
+
+// StageInstanceDelete will delete a Stage instance by ID of the Stage channel.
+// channelID : The ID of the Stage channel
+func (s *Session) StageInstanceDelete(channelID string) (err error) {
+	_, err = s.RequestWithBucketID("DELETE", EndpointStageInstance(channelID), nil, EndpointStageInstance(channelID))
+	return
 }
 
 // ------------------------------------------------------------------------------------------------

vendor/github.com/bwmarrin/discordgo/state.go

@@ -979,8 +979,9 @@ func (s *State) OnInterface(se *Session, i interface{}) (err error) {
 
 		err = s.GuildRemove(t.Guild)
 	case *GuildMemberAdd:
+		var guild *Guild
 		// Updates the MemberCount of the guild.
-		guild, err := s.Guild(t.Member.GuildID)
+		guild, err = s.Guild(t.Member.GuildID)
 		if err != nil {
 			return err
 		}
@@ -995,8 +996,9 @@ func (s *State) OnInterface(se *Session, i interface{}) (err error) {
 			err = s.MemberAdd(t.Member)
 		}
 	case *GuildMemberRemove:
+		var guild *Guild
 		// Updates the MemberCount of the guild.
-		guild, err := s.Guild(t.Member.GuildID)
+		guild, err = s.Guild(t.Member.GuildID)
 		if err != nil {
 			return err
 		}

vendor/github.com/bwmarrin/discordgo/structs.go

@@ -43,6 +43,9 @@ type Session struct {
 	// Should the session reconnect the websocket on errors.
 	ShouldReconnectOnError bool
 
+	// Should the session retry requests when rate limited.
+	ShouldRetryOnRateLimit bool
+
 	// Identify is sent during initial handshake with the discord gateway.
 	// https://discord.com/developers/docs/topics/gateway#identify
 	Identify Identify
@@ -260,6 +263,7 @@ const (
 	ChannelTypeGuildNewsThread    ChannelType = 10
 	ChannelTypeGuildPublicThread  ChannelType = 11
 	ChannelTypeGuildPrivateThread ChannelType = 12
+	ChannelTypeGuildStageVoice    ChannelType = 13
 )
 
 // A Channel holds all data related to an individual Discord channel.
@@ -360,7 +364,7 @@ type ChannelEdit struct {
 	UserLimit            int                    `json:"user_limit,omitempty"`
 	PermissionOverwrites []*PermissionOverwrite `json:"permission_overwrites,omitempty"`
 	ParentID             string                 `json:"parent_id,omitempty"`
-	RateLimitPerUser     int                    `json:"rate_limit_per_user,omitempty"`
+	RateLimitPerUser     *int                   `json:"rate_limit_per_user,omitempty"`
 
 	// NOTE: threads only
 
@@ -552,6 +556,17 @@ const (
 	ExplicitContentFilterAllMembers          ExplicitContentFilterLevel = 2
 )
 
+// GuildNSFWLevel type definition
+type GuildNSFWLevel int
+
+// Constants for GuildNSFWLevel levels from 0 to 3 inclusive
+const (
+	GuildNSFWLevelDefault       GuildNSFWLevel = 0
+	GuildNSFWLevelExplicit      GuildNSFWLevel = 1
+	GuildNSFWLevelSafe          GuildNSFWLevel = 2
+	GuildNSFWLevelAgeRestricted GuildNSFWLevel = 3
+)
+
 // MfaLevel type definition
 type MfaLevel int
 
@@ -675,6 +690,9 @@ type Guild struct {
 	// The explicit content filter level
 	ExplicitContentFilter ExplicitContentFilterLevel `json:"explicit_content_filter"`
 
+	// The NSFW Level of the guild
+	NSFWLevel GuildNSFWLevel `json:"nsfw_level"`
+
 	// The list of enabled guild features
 	Features []string `json:"features"`
 
@@ -731,6 +749,9 @@ type Guild struct {
 
 	// Permissions of our user
 	Permissions int64 `json:"permissions,string"`
+
+	// Stage instances in the guild
+	StageInstances []*StageInstance `json:"stage_instances"`
 }
 
 // A GuildPreview holds data related to a specific public Discord Guild, even if the user is not in the guild.
@@ -757,16 +778,31 @@ type GuildPreview struct {
 	// The list of enabled guild features
 	Features []string `json:"features"`
 
-	// Approximate number of members in this guild, returned from the GET /guild/<id> endpoint when with_counts is true
+	// Approximate number of members in this guild
+	// NOTE: this field is only filled when using GuildWithCounts
 	ApproximateMemberCount int `json:"approximate_member_count"`
 
-	// Approximate number of non-offline members in this guild, returned from the GET /guild/<id> endpoint when with_counts is true
+	// Approximate number of non-offline members in this guild
+	// NOTE: this field is only filled when using GuildWithCounts
 	ApproximatePresenceCount int `json:"approximate_presence_count"`
 
 	// the description for the guild
 	Description string `json:"description"`
 }
 
+// IconURL returns a URL to the guild's icon.
+func (g *GuildPreview) IconURL() string {
+	if g.Icon == "" {
+		return ""
+	}
+
+	if strings.HasPrefix(g.Icon, "a_") {
+		return EndpointGuildIconAnimated(g.ID, g.Icon)
+	}
+
+	return EndpointGuildIcon(g.ID, g.Icon)
+}
+
 // GuildScheduledEvent is a representation of a scheduled event in a guild. Only for retrieval of the data.
 // https://discord.com/developers/docs/resources/guild-scheduled-event#guild-scheduled-event
 type GuildScheduledEvent struct {
@@ -842,7 +878,7 @@ func (p GuildScheduledEventParams) MarshalJSON() ([]byte, error) {
 	type guildScheduledEventParams GuildScheduledEventParams
 
 	if p.EntityType == GuildScheduledEventEntityTypeExternal && p.ChannelID == "" {
-		return json.Marshal(struct {
+		return Marshal(struct {
 			guildScheduledEventParams
 			ChannelID json.RawMessage `json:"channel_id"`
 		}{
@@ -851,7 +887,7 @@ func (p GuildScheduledEventParams) MarshalJSON() ([]byte, error) {
 		})
 	}
 
-	return json.Marshal(guildScheduledEventParams(p))
+	return Marshal(guildScheduledEventParams(p))
 }
 
 // GuildScheduledEventEntityMetadata holds additional metadata for guild scheduled event.
@@ -1093,7 +1129,7 @@ func (t *TimeStamps) UnmarshalJSON(b []byte) error {
 		End   float64 `json:"end,omitempty"`
 		Start float64 `json:"start,omitempty"`
 	}{}
-	err := json.Unmarshal(b, &temp)
+	err := Unmarshal(b, &temp)
 	if err != nil {
 		return err
 	}
@@ -1231,7 +1267,7 @@ func (t *TooManyRequests) UnmarshalJSON(b []byte) error {
 		Message    string  `json:"message"`
 		RetryAfter float64 `json:"retry_after"`
 	}{}
-	err := json.Unmarshal(b, &u)
+	err := Unmarshal(b, &u)
 	if err != nil {
 		return err
 	}
@@ -1566,6 +1602,15 @@ type UserGuildSettingsEdit struct {
 	ChannelOverrides     map[string]*UserGuildSettingsChannelOverride `json:"channel_overrides"`
 }
 
+// GuildMemberParams stores data needed to update a member
+// https://discord.com/developers/docs/resources/guild#modify-guild-member
+type GuildMemberParams struct {
+	// Value to set user's nickname to
+	Nick string `json:"nick,omitempty"`
+	// Array of role ids the member is assigned
+	Roles *[]string `json:"roles,omitempty"`
+}
+
 // An APIErrorMessage is an api error message returned from discord
 type APIErrorMessage struct {
 	Code    int    `json:"code"`
@@ -1642,7 +1687,7 @@ func (activity *Activity) UnmarshalJSON(b []byte) error {
 		Instance      bool         `json:"instance,omitempty"`
 		Flags         int          `json:"flags,omitempty"`
 	}{}
-	err := json.Unmarshal(b, &temp)
+	err := Unmarshal(b, &temp)
 	if err != nil {
 		return err
 	}
@@ -1695,14 +1740,13 @@ const (
 // Identify is sent during initial handshake with the discord gateway.
 // https://discord.com/developers/docs/topics/gateway#identify
 type Identify struct {
-	Token              string              `json:"token"`
-	Properties         IdentifyProperties  `json:"properties"`
-	Compress           bool                `json:"compress"`
-	LargeThreshold     int                 `json:"large_threshold"`
-	Shard              *[2]int             `json:"shard,omitempty"`
-	Presence           GatewayStatusUpdate `json:"presence,omitempty"`
-	GuildSubscriptions bool                `json:"guild_subscriptions"`
-	Intents            Intent              `json:"intents"`
+	Token          string              `json:"token"`
+	Properties     IdentifyProperties  `json:"properties"`
+	Compress       bool                `json:"compress"`
+	LargeThreshold int                 `json:"large_threshold"`
+	Shard          *[2]int             `json:"shard,omitempty"`
+	Presence       GatewayStatusUpdate `json:"presence,omitempty"`
+	Intents        Intent              `json:"intents"`
 }
 
 // IdentifyProperties contains the "properties" portion of an Identify packet
@@ -1715,6 +1759,49 @@ type IdentifyProperties struct {
 	ReferringDomain string `json:"$referring_domain"`
 }
 
+// StageInstance holds information about a live stage.
+// https://discord.com/developers/docs/resources/stage-instance#stage-instance-resource
+type StageInstance struct {
+	// The id of this Stage instance
+	ID string `json:"id"`
+	// The guild id of the associated Stage channel
+	GuildID string `json:"guild_id"`
+	// The id of the associated Stage channel
+	ChannelID string `json:"channel_id"`
+	// The topic of the Stage instance (1-120 characters)
+	Topic string `json:"topic"`
+	// The privacy level of the Stage instance
+	// https://discord.com/developers/docs/resources/stage-instance#stage-instance-object-privacy-level
+	PrivacyLevel StageInstancePrivacyLevel `json:"privacy_level"`
+	// Whether or not Stage Discovery is disabled (deprecated)
+	DiscoverableDisabled bool `json:"discoverable_disabled"`
+	// The id of the scheduled event for this Stage instance
+	GuildScheduledEventID string `json:"guild_scheduled_event_id"`
+}
+
+// StageInstanceParams represents the parameters needed to create or edit a stage instance
+type StageInstanceParams struct {
+	// ChannelID represents the id of the Stage channel
+	ChannelID string `json:"channel_id,omitempty"`
+	// Topic of the Stage instance (1-120 characters)
+	Topic string `json:"topic,omitempty"`
+	// PrivacyLevel of the Stage instance (default GUILD_ONLY)
+	PrivacyLevel StageInstancePrivacyLevel `json:"privacy_level,omitempty"`
+	// SendStartNotification will notify @everyone that a Stage instance has started
+	SendStartNotification bool `json:"send_start_notification,omitempty"`
+}
+
+// StageInstancePrivacyLevel represents the privacy level of a Stage instance
+// https://discord.com/developers/docs/resources/stage-instance#stage-instance-object-privacy-level
+type StageInstancePrivacyLevel int
+
+const (
+	// StageInstancePrivacyLevelPublic The Stage instance is visible publicly. (deprecated)
+	StageInstancePrivacyLevelPublic StageInstancePrivacyLevel = 1
+	// StageInstancePrivacyLevelGuildOnly The Stage instance is visible to only guild members.
+	StageInstancePrivacyLevelGuildOnly StageInstancePrivacyLevel = 2
+)
+
 // Constants for the different bit offsets of text channel permissions
 const (
 	// Deprecated: PermissionReadMessages has been replaced with PermissionViewChannel for text and voice channels
@@ -1731,6 +1818,7 @@ const (
 	PermissionManageThreads         = 0x0000000400000000
 	PermissionCreatePublicThreads   = 0x0000000800000000
 	PermissionCreatePrivateThreads  = 0x0000001000000000
+	PermissionUseExternalStickers   = 0x0000002000000000
 	PermissionSendMessagesInThreads = 0x0000004000000000
 )
 
@@ -1745,6 +1833,7 @@ const (
 	PermissionVoiceMoveMembers     = 0x0000000001000000
 	PermissionVoiceUseVAD          = 0x0000000002000000
 	PermissionVoiceRequestToSpeak  = 0x0000000100000000
+	PermissionUseActivities        = 0x0000008000000000
 )
 
 // Constants for general management.
@@ -1754,6 +1843,7 @@ const (
 	PermissionManageRoles     = 0x0000000010000000
 	PermissionManageWebhooks  = 0x0000000020000000
 	PermissionManageEmojis    = 0x0000000040000000
+	PermissionManageEvents    = 0x0000000200000000
 )
 
 // Constants for the different bit offsets of general permissions

vendor/github.com/bwmarrin/discordgo/types.go

@@ -1,47 +0,0 @@
-// Discordgo - Discord bindings for Go
-// Available at https://github.com/bwmarrin/discordgo
-
-// Copyright 2015-2016 Bruce Marriner <bruce@sqls.net>.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This file contains custom types, currently only a timestamp wrapper.
-
-package discordgo
-
-import (
-	"encoding/json"
-	"net/http"
-)
-
-// RESTError stores error information about a request with a bad response code.
-// Message is not always present, there are cases where api calls can fail
-// without returning a json message.
-type RESTError struct {
-	Request      *http.Request
-	Response     *http.Response
-	ResponseBody []byte
-
-	Message *APIErrorMessage // Message may be nil.
-}
-
-func newRestError(req *http.Request, resp *http.Response, body []byte) *RESTError {
-	restErr := &RESTError{
-		Request:      req,
-		Response:     resp,
-		ResponseBody: body,
-	}
-
-	// Attempt to decode the error and assume no message was provided if it fails
-	var msg *APIErrorMessage
-	err := json.Unmarshal(body, &msg)
-	if err == nil {
-		restErr.Message = msg
-	}
-
-	return restErr
-}
-
-func (r RESTError) Error() string {
-	return "HTTP " + r.Response.Status + ", " + string(r.ResponseBody)
-}

vendor/github.com/bwmarrin/discordgo/util.go

@@ -2,7 +2,6 @@ package discordgo
 
 import (
 	"bytes"
-	"encoding/json"
 	"fmt"
 	"io"
 	"mime/multipart"
@@ -30,7 +29,7 @@ func MultipartBodyWithJSON(data interface{}, files []*File) (requestContentType
 	body := &bytes.Buffer{}
 	bodywriter := multipart.NewWriter(body)
 
-	payload, err := json.Marshal(data)
+	payload, err := Marshal(data)
 	if err != nil {
 		return
 	}

vendor/github.com/bwmarrin/discordgo/wsapi.go

@@ -409,10 +409,13 @@ func (s *Session) UpdateStatusComplex(usd UpdateStatusData) (err error) {
 }
 
 type requestGuildMembersData struct {
-	GuildIDs  []string `json:"guild_id"`
-	Query     string   `json:"query"`
-	Limit     int      `json:"limit"`
-	Presences bool     `json:"presences"`
+	// TODO: Deprecated. Use string instead of []string
+	GuildIDs  []string  `json:"guild_id"`
+	Query     *string   `json:"query,omitempty"`
+	UserIDs   *[]string `json:"user_ids,omitempty"`
+	Limit     int       `json:"limit"`
+	Nonce     string    `json:"nonce,omitempty"`
+	Presences bool      `json:"presences"`
 }
 
 type requestGuildMembersOp struct {
@@ -425,16 +428,21 @@ type requestGuildMembersOp struct {
 // guildID   : Single Guild ID to request members of
 // query     : String that username starts with, leave empty to return all members
 // limit     : Max number of items to return, or 0 to request all members matched
+// nonce     : Nonce to identify the Guild Members Chunk response
 // presences : Whether to request presences of guild members
-func (s *Session) RequestGuildMembers(guildID string, query string, limit int, presences bool) (err error) {
-	data := requestGuildMembersData{
-		GuildIDs:  []string{guildID},
-		Query:     query,
-		Limit:     limit,
-		Presences: presences,
-	}
-	err = s.requestGuildMembers(data)
-	return
+func (s *Session) RequestGuildMembers(guildID, query string, limit int, nonce string, presences bool) error {
+	return s.RequestGuildMembersBatch([]string{guildID}, query, limit, nonce, presences)
+}
+
+// RequestGuildMembersList requests guild members from the gateway
+// The gateway responds with GuildMembersChunk events
+// guildID   : Single Guild ID to request members of
+// userIDs   : IDs of users to fetch
+// limit     : Max number of items to return, or 0 to request all members matched
+// nonce     : Nonce to identify the Guild Members Chunk response
+// presences : Whether to request presences of guild members
+func (s *Session) RequestGuildMembersList(guildID string, userIDs []string, limit int, nonce string, presences bool) error {
+	return s.RequestGuildMembersBatchList([]string{guildID}, userIDs, limit, nonce, presences)
 }
 
 // RequestGuildMembersBatch requests guild members from the gateway
@@ -442,12 +450,37 @@ func (s *Session) RequestGuildMembers(guildID string, query string, limit int, p
 // guildID   : Slice of guild IDs to request members of
 // query     : String that username starts with, leave empty to return all members
 // limit     : Max number of items to return, or 0 to request all members matched
+// nonce     : Nonce to identify the Guild Members Chunk response
 // presences : Whether to request presences of guild members
-func (s *Session) RequestGuildMembersBatch(guildIDs []string, query string, limit int, presences bool) (err error) {
+//
+// NOTE: this function is deprecated, please use RequestGuildMembers instead
+func (s *Session) RequestGuildMembersBatch(guildIDs []string, query string, limit int, nonce string, presences bool) (err error) {
 	data := requestGuildMembersData{
 		GuildIDs:  guildIDs,
-		Query:     query,
+		Query:     &query,
 		Limit:     limit,
+		Nonce:     nonce,
+		Presences: presences,
+	}
+	err = s.requestGuildMembers(data)
+	return
+}
+
+// RequestGuildMembersBatchList requests guild members from the gateway
+// The gateway responds with GuildMembersChunk events
+// guildID   : Slice of guild IDs to request members of
+// userIDs   : IDs of users to fetch
+// limit     : Max number of items to return, or 0 to request all members matched
+// nonce     : Nonce to identify the Guild Members Chunk response
+// presences : Whether to request presences of guild members
+//
+// NOTE: this function is deprecated, please use RequestGuildMembersList instead
+func (s *Session) RequestGuildMembersBatchList(guildIDs []string, userIDs []string, limit int, nonce string, presences bool) (err error) {
+	data := requestGuildMembersData{
+		GuildIDs:  guildIDs,
+		UserIDs:   &userIDs,
+		Limit:     limit,
+		Nonce:     nonce,
 		Presences: presences,
 	}
 	err = s.requestGuildMembers(data)

vendor/github.com/fsnotify/fsnotify/CHANGELOG.md

@@ -7,9 +7,27 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.5.4] - 2022-04-25
+
+* Windows: add missing defer to `Watcher.WatchList` [#447](https://github.com/fsnotify/fsnotify/pull/447)
+* go.mod: use latest x/sys [#444](https://github.com/fsnotify/fsnotify/pull/444)
+* Fix compilation for OpenBSD [#443](https://github.com/fsnotify/fsnotify/pull/443)
+
+## [1.5.3] - 2022-04-22
+
+* This version is retracted. An incorrect branch is published accidentally [#445](https://github.com/fsnotify/fsnotify/issues/445)
+
+## [1.5.2] - 2022-04-21
+
+* Add a feature to return the directories and files that are being monitored [#374](https://github.com/fsnotify/fsnotify/pull/374)
+* Fix potential crash on windows if `raw.FileNameLength` exceeds `syscall.MAX_PATH` [#361](https://github.com/fsnotify/fsnotify/pull/361)
+* Allow build on unsupported GOOS [#424](https://github.com/fsnotify/fsnotify/pull/424)
+* Don't set `poller.fd` twice in `newFdPoller` [#406](https://github.com/fsnotify/fsnotify/pull/406)
+* fix go vet warnings: call to `(*T).Fatalf` from a non-test goroutine [#416](https://github.com/fsnotify/fsnotify/pull/416)
+
 ## [1.5.1] - 2021-08-24
 
-* Revert Add AddRaw to not follow symlinks
+* Revert Add AddRaw to not follow symlinks [#394](https://github.com/fsnotify/fsnotify/pull/394)
 
 ## [1.5.0] - 2021-08-20
 

vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md

@@ -48,18 +48,6 @@ fsnotify uses build tags to compile different code on Linux, BSD, macOS, and Win
 
 Before doing a pull request, please do your best to test your changes on multiple platforms, and list which platforms you were able/unable to test on.
 
-To aid in cross-platform testing there is a Vagrantfile for Linux and BSD.
-
-* Install [Vagrant](http://www.vagrantup.com/) and [VirtualBox](https://www.virtualbox.org/)
-* Setup [Vagrant Gopher](https://github.com/nathany/vagrant-gopher) in your `src` folder.
-* Run `vagrant up` from the project folder. You can also setup just one box with `vagrant up linux` or `vagrant up bsd` (note: the BSD box doesn't support Windows hosts at this time, and NFS may prompt for your host OS password)
-* Once setup, you can run the test suite on a given OS with a single command `vagrant ssh linux -c 'cd fsnotify/fsnotify; go test'`.
-* When you're done, you will want to halt or destroy the Vagrant boxes.
-
-Notice: fsnotify file system events won't trigger in shared folders. The tests get around this limitation by using the /tmp directory.
-
-Right now there is no equivalent solution for Windows and macOS, but there are Windows VMs [freely available from Microsoft](http://www.modern.ie/en-us/virtualization-tools#downloads).
-
 ### Maintainers
 
 Help maintaining fsnotify is welcome. To be a maintainer:
@@ -67,11 +55,6 @@ Help maintaining fsnotify is welcome. To be a maintainer:
 * Submit a pull request and sign the CLA as above.
 * You must be able to run the test suite on Mac, Windows, Linux and BSD.
 
-To keep master clean, the fsnotify project uses the "apply mail" workflow outlined in Nathaniel Talbott's post ["Merge pull request" Considered Harmful][am]. This requires installing [hub][].
-
 All code changes should be internal pull requests.
 
 Releases are tagged using [Semantic Versioning](http://semver.org/).
-
-[hub]: https://github.com/github/hub
-[am]: http://blog.spreedly.com/2014/06/24/merge-pull-request-considered-harmful/#.VGa5yZPF_Zs

vendor/github.com/fsnotify/fsnotify/README.md

@@ -1,12 +1,8 @@
 # File system notifications for Go
 
-[![GoDoc](https://godoc.org/github.com/fsnotify/fsnotify?status.svg)](https://godoc.org/github.com/fsnotify/fsnotify) [![Go Report Card](https://goreportcard.com/badge/github.com/fsnotify/fsnotify)](https://goreportcard.com/report/github.com/fsnotify/fsnotify)
+[![Go Reference](https://pkg.go.dev/badge/github.com/fsnotify/fsnotify.svg)](https://pkg.go.dev/github.com/fsnotify/fsnotify) [![Go Report Card](https://goreportcard.com/badge/github.com/fsnotify/fsnotify)](https://goreportcard.com/report/github.com/fsnotify/fsnotify) [![Maintainers Wanted](https://img.shields.io/badge/maintainers-wanted-red.svg)](https://github.com/fsnotify/fsnotify/issues/413)
 
-fsnotify utilizes [golang.org/x/sys](https://godoc.org/golang.org/x/sys) rather than `syscall` from the standard library. Ensure you have the latest version installed by running:
-
-```console
-go get -u golang.org/x/sys/...
-```
+fsnotify utilizes [`golang.org/x/sys`](https://pkg.go.dev/golang.org/x/sys) rather than [`syscall`](https://pkg.go.dev/syscall) from the standard library.
 
 Cross platform: Windows, Linux, BSD and macOS.
 
@@ -16,22 +12,20 @@ Cross platform: Windows, Linux, BSD and macOS.
 | kqueue                | BSD, macOS, iOS\*                | Supported |
 | ReadDirectoryChangesW | Windows                          | Supported |
 | FSEvents              | macOS                            | [Planned](https://github.com/fsnotify/fsnotify/issues/11)                                                                       |
-| FEN                   | Solaris 11                       | [In Progress](https://github.com/fsnotify/fsnotify/issues/12)                                                                   |
-| fanotify              | Linux 2.6.37+                    | [Planned](https://github.com/fsnotify/fsnotify/issues/114)                                                                      |
+| FEN                   | Solaris 11                       | [In Progress](https://github.com/fsnotify/fsnotify/pull/371)                                                                   |
+| fanotify              | Linux 2.6.37+                    | [Maybe](https://github.com/fsnotify/fsnotify/issues/114)                                                                      |
 | USN Journals          | Windows                          | [Maybe](https://github.com/fsnotify/fsnotify/issues/53)                                                                         |
 | Polling               | *All*                            | [Maybe](https://github.com/fsnotify/fsnotify/issues/9)                                                                          |
 
 \* Android and iOS are untested.
 
-Please see [the documentation](https://godoc.org/github.com/fsnotify/fsnotify) and consult the [FAQ](#faq) for usage information.
+Please see [the documentation](https://pkg.go.dev/github.com/fsnotify/fsnotify) and consult the [FAQ](#faq) for usage information.
 
 ## API stability
 
-fsnotify is a fork of [howeyc/fsnotify](https://godoc.org/github.com/howeyc/fsnotify) with a new API as of v1.0. The API is based on [this design document](http://goo.gl/MrYxyA). 
+fsnotify is a fork of [howeyc/fsnotify](https://github.com/howeyc/fsnotify) with a new API as of v1.0. The API is based on [this design document](http://goo.gl/MrYxyA).
 
-All [releases](https://github.com/fsnotify/fsnotify/releases) are tagged based on [Semantic Versioning](http://semver.org/). Further API changes are [planned](https://github.com/fsnotify/fsnotify/milestones), and will be tagged with a new major revision number.
-
-Go 1.6 supports dependencies located in the `vendor/` folder. Unless you are creating a library, it is recommended that you copy fsnotify into `vendor/github.com/fsnotify/fsnotify` within your project, and likewise for `golang.org/x/sys`.
+All [releases](https://github.com/fsnotify/fsnotify/releases) are tagged based on [Semantic Versioning](http://semver.org/).
 
 ## Usage
 
@@ -84,10 +78,6 @@ func main() {
 
 Please refer to [CONTRIBUTING][] before opening an issue or pull request.
 
-## Example
-
-See [example_test.go](https://github.com/fsnotify/fsnotify/blob/master/example_test.go).
-
 ## FAQ
 
 **When a file is moved to another directory is it still being watched?**

vendor/github.com/fsnotify/fsnotify/fsnotify_unsupported.go

@@ -0,0 +1,36 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !darwin && !dragonfly && !freebsd && !openbsd && !linux && !netbsd && !solaris && !windows
+// +build !darwin,!dragonfly,!freebsd,!openbsd,!linux,!netbsd,!solaris,!windows
+
+package fsnotify
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct{}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+	return nil, fmt.Errorf("fsnotify not supported on %s", runtime.GOOS)
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+	return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+	return nil
+}
+
+// Remove stops watching the the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+	return nil
+}

vendor/github.com/fsnotify/fsnotify/inotify.go

@@ -163,6 +163,19 @@ func (w *Watcher) Remove(name string) error {
 	return nil
 }
 
+// WatchList returns the directories and files that are being monitered.
+func (w *Watcher) WatchList() []string {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	entries := make([]string, 0, len(w.watches))
+	for pathname := range w.watches {
+		entries = append(entries, pathname)
+	}
+
+	return entries
+}
+
 type watch struct {
 	wd    uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall)
 	flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags)

vendor/github.com/fsnotify/fsnotify/inotify_poller.go

@@ -38,7 +38,6 @@ func newFdPoller(fd int) (*fdPoller, error) {
 			poller.close()
 		}
 	}()
-	poller.fd = fd
 
 	// Create epoll fd
 	poller.epfd, errno = unix.EpollCreate1(unix.EPOLL_CLOEXEC)

vendor/github.com/fsnotify/fsnotify/kqueue.go

@@ -148,6 +148,19 @@ func (w *Watcher) Remove(name string) error {
 	return nil
 }
 
+// WatchList returns the directories and files that are being monitered.
+func (w *Watcher) WatchList() []string {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	entries := make([]string, 0, len(w.watches))
+	for pathname := range w.watches {
+		entries = append(entries, pathname)
+	}
+
+	return entries
+}
+
 // Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE)
 const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME
 

vendor/github.com/fsnotify/fsnotify/windows.go

@@ -12,6 +12,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"reflect"
 	"runtime"
 	"sync"
 	"syscall"
@@ -96,6 +97,21 @@ func (w *Watcher) Remove(name string) error {
 	return <-in.reply
 }
 
+// WatchList returns the directories and files that are being monitered.
+func (w *Watcher) WatchList() []string {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	entries := make([]string, 0, len(w.watches))
+	for _, entry := range w.watches {
+		for _, watchEntry := range entry {
+			entries = append(entries, watchEntry.path)
+		}
+	}
+
+	return entries
+}
+
 const (
 	// Options for AddWatch
 	sysFSONESHOT = 0x80000000
@@ -452,8 +468,16 @@ func (w *Watcher) readEvents() {
 
 			// Point "raw" to the event in the buffer
 			raw := (*syscall.FileNotifyInformation)(unsafe.Pointer(&watch.buf[offset]))
-			buf := (*[syscall.MAX_PATH]uint16)(unsafe.Pointer(&raw.FileName))
-			name := syscall.UTF16ToString(buf[:raw.FileNameLength/2])
+			// TODO: Consider using unsafe.Slice that is available from go1.17
+			// https://stackoverflow.com/questions/51187973/how-to-create-an-array-or-a-slice-from-an-array-unsafe-pointer-in-golang
+			// instead of using a fixed syscall.MAX_PATH buf, we create a buf that is the size of the path name
+			size := int(raw.FileNameLength / 2)
+			var buf []uint16
+			sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
+			sh.Data = uintptr(unsafe.Pointer(&raw.FileName))
+			sh.Len = size
+			sh.Cap = size
+			name := syscall.UTF16ToString(buf)
 			fullname := filepath.Join(watch.path, name)
 
 			var mask uint64

vendor/github.com/gomarkdown/markdown/README.md

@@ -1,6 +1,6 @@
 # Markdown Parser and HTML Renderer for Go
 
-[![pkg.go.dev](https://pkg.go.dev/badge/github.com/gomarkdown/markdown)](https://pkg.go.dev/badge/github.com/gomarkdown/markdown)
+[![pkg.go.dev](https://pkg.go.dev/badge/github.com/gomarkdown/markdown)](https://pkg.go.dev/github.com/gomarkdown/markdown)
 
 Package `github.com/gomarkdown/markdown` is a very fast Go library for parsing [Markdown](https://daringfireball.net/projects/markdown/) documents and rendering them to HTML.
 

vendor/github.com/gomarkdown/markdown/html/doc.go

@@ -26,8 +26,8 @@ links or code blocks.
 
 	// a very dummy render hook that will output "code_replacements" instead of
 	// <code>${content}</code> emitted by html.Renderer
-	func renderHookCodeBlock(w io.Writer, node *ast.Node, entering bool) (ast.WalkStatus, bool) {
-		_, ok := node.Data.(*ast.CodeBlockData)
+	func renderHookCodeBlock(w io.Writer, node ast.Node, entering bool) (ast.WalkStatus, bool) {
+		_, ok := node.(*ast.CodeBlock)
 		if !ok {
 			return ast.GoToNext, false
 		}

vendor/github.com/gomarkdown/markdown/parser/block.go

@@ -858,12 +858,9 @@ func isFenceLine(data []byte, syntax *string, oldmarker string) (end int, marker
 		return 0, ""
 	}
 
-	// TODO(shurcooL): It's probably a good idea to simplify the 2 code paths here
-	// into one, always get the syntax, and discard it if the caller doesn't care.
-	if syntax != nil {
-		syn := 0
+	// if just read the beginning marker, read the syntax
+	if oldmarker == "" {
 		i = skipChar(data, i, ' ')
-
 		if i >= n {
 			if i == n {
 				return i, marker
@@ -871,41 +868,15 @@ func isFenceLine(data []byte, syntax *string, oldmarker string) (end int, marker
 			return 0, ""
 		}
 
-		syntaxStart := i
-
-		if data[i] == '{' {
-			i++
-			syntaxStart++
-
-			for i < n && data[i] != '}' && data[i] != '\n' {
-				syn++
-				i++
-			}
-
-			if i >= n || data[i] != '}' {
-				return 0, ""
-			}
-
-			// strip all whitespace at the beginning and the end
-			// of the {} block
-			for syn > 0 && isSpace(data[syntaxStart]) {
-				syntaxStart++
-				syn--
-			}
-
-			for syn > 0 && isSpace(data[syntaxStart+syn-1]) {
-				syn--
-			}
-
-			i++
-		} else {
-			for i < n && !isSpace(data[i]) {
-				syn++
-				i++
-			}
+		syntaxStart, syntaxLen := syntaxRange(data, &i)
+		if syntaxStart == 0 && syntaxLen == 0 {
+			return 0, ""
 		}
 
-		*syntax = string(data[syntaxStart : syntaxStart+syn])
+		// caller wants the syntax
+		if syntax != nil {
+			*syntax = string(data[syntaxStart : syntaxStart+syntaxLen])
+		}
 	}
 
 	i = skipChar(data, i, ' ')
@@ -918,6 +889,47 @@ func isFenceLine(data []byte, syntax *string, oldmarker string) (end int, marker
 	return i + 1, marker // Take newline into account.
 }
 
+func syntaxRange(data []byte, iout *int) (int, int) {
+	n := len(data)
+	syn := 0
+	i := *iout
+	syntaxStart := i
+	if data[i] == '{' {
+		i++
+		syntaxStart++
+
+		for i < n && data[i] != '}' && data[i] != '\n' {
+			syn++
+			i++
+		}
+
+		if i >= n || data[i] != '}' {
+			return 0, 0
+		}
+
+		// strip all whitespace at the beginning and the end
+		// of the {} block
+		for syn > 0 && isSpace(data[syntaxStart]) {
+			syntaxStart++
+			syn--
+		}
+
+		for syn > 0 && isSpace(data[syntaxStart+syn-1]) {
+			syn--
+		}
+
+		i++
+	} else {
+		for i < n && !isSpace(data[i]) {
+			syn++
+			i++
+		}
+	}
+
+	*iout = i
+	return syntaxStart, syn
+}
+
 // fencedCodeBlock returns the end index if data contains a fenced code block at the beginning,
 // or 0 otherwise. It writes to out if doRender is true, otherwise it has no side effects.
 // If doRender is true, a final newline is mandatory to recognize the fenced code block.
@@ -1416,7 +1428,7 @@ gatherlines:
 			// we need to add leadingWhiteSpaces + 1 spaces in the beginning of the chunk
 			if indentIndex >= 4 && p.dliPrefix(chunk) <= 0 {
 				leadingWhiteSpaces := skipChar(chunk, 0, ' ')
-				chunk = data[ line+indentIndex - (leadingWhiteSpaces + 1) : i]
+				chunk = data[line+indentIndex-(leadingWhiteSpaces+1) : i]
 			}
 
 			// to be a nested list, it must be indented more

vendor/github.com/gomarkdown/markdown/parser/inline.go

@@ -131,7 +131,11 @@ func codeSpan(p *Parser, data []byte, offset int) (int, ast.Node) {
 
 	// find the next delimiter
 	i, end := 0, 0
+	hasLFBeforeDelimiter := false
 	for end = nb; end < len(data) && i < nb; end++ {
+		if data[end] == '\n' {
+			hasLFBeforeDelimiter = true
+		}
 		if data[end] == '`' {
 			i++
 		} else {
@@ -144,6 +148,18 @@ func codeSpan(p *Parser, data []byte, offset int) (int, ast.Node) {
 		return 0, nil
 	}
 
+	// If there are non-space chars after the ending delimiter and before a '\n',
+	// flag that this is not a well formed fenced code block.
+	hasCharsAfterDelimiter := false
+	for j := end; j < len(data); j++ {
+		if data[j] == '\n' {
+			break
+		}
+		if !isSpace(data[j]) {
+			hasCharsAfterDelimiter = true
+		}
+	}
+
 	// trim outside whitespace
 	fBegin := nb
 	for fBegin < end && data[fBegin] == ' ' {
@@ -155,14 +171,31 @@ func codeSpan(p *Parser, data []byte, offset int) (int, ast.Node) {
 		fEnd--
 	}
 
-	// render the code span
-	if fBegin != fEnd {
-		code := &ast.Code{}
-		code.Literal = data[fBegin:fEnd]
-		return end, code
+	if fBegin == fEnd {
+		return end, nil
 	}
 
-	return end, nil
+	// if delimiter has 3 backticks
+	if nb == 3 {
+		i := fBegin
+		syntaxStart, syntaxLen := syntaxRange(data, &i)
+
+		// If we found a '\n' before the end marker and there are only spaces
+		// after the end marker, then this is a code block.
+		if hasLFBeforeDelimiter && !hasCharsAfterDelimiter {
+			codeblock := &ast.CodeBlock{
+				IsFenced: true,
+				Info:     data[syntaxStart : syntaxStart+syntaxLen],
+			}
+			codeblock.Literal = data[i:fEnd]
+			return end, codeblock
+		}
+	}
+
+	// render the code span
+	code := &ast.Code{}
+	code.Literal = data[fBegin:fEnd]
+	return end, code
 }
 
 // newline preceded by two spaces becomes <br>
@@ -781,7 +814,7 @@ func entity(p *Parser, data []byte, offset int) (int, ast.Node) {
 		codepoint, err = strconv.ParseUint(string(ent[2:len(ent)-1]), 10, 64)
 	}
 	if err == nil { // only if conversion was valid return here.
-		return end, newTextNode([]byte(string(codepoint)))
+		return end, newTextNode([]byte(string(rune(codepoint))))
 	}
 
 	return end, newTextNode(ent)

vendor/github.com/graph-gophers/graphql-go/.gitignore

@@ -0,0 +1,5 @@
+/.idea
+/.vscode
+/internal/validation/testdata/graphql-js
+/internal/validation/testdata/node_modules
+/vendor

vendor/github.com/graph-gophers/graphql-go/.golangci.yml

@@ -0,0 +1,35 @@
+run:
+  timeout: 5m
+
+linters-settings:
+  gofmt:
+    simplify: true
+  govet:
+    check-shadowing: true
+    enable-all: true
+    disable:
+      - fieldalignment
+      - deepequalerrors # remove later
+
+linters:
+  disable-all: true
+  enable:
+    - deadcode
+    - gofmt
+    - gosimple
+    - govet
+    - ineffassign
+    - exportloopref
+    - structcheck
+    - staticcheck
+    - unconvert
+    - unused
+    - varcheck
+    - misspell
+    - goimports
+
+issues:
+  exclude-rules:
+    - linters:
+      - unused
+      path: "graphql_test.go"

vendor/github.com/graph-gophers/graphql-go/CHANGELOG.md

@@ -0,0 +1,10 @@
+CHANGELOG
+
+[v1.1.0](https://github.com/graph-gophers/graphql-go/releases/tag/v1.1.0) Release v1.1.0
+* [FEATURE] Add types package #437
+* [FEATURE] Expose `packer.Unmarshaler` as `decode.Unmarshaler` to the public #450
+* [FEATURE] Add location fields to type definitions #454 
+* [FEATURE] `errors.Errorf` preserves original error similar to `fmt.Errorf` #456
+* [BUGFIX] Fix duplicated __typename in response (fixes #369) #443
+
+[v1.0.0](https://github.com/graph-gophers/graphql-go/releases/tag/v1.0.0) Initial release

vendor/github.com/graph-gophers/graphql-go/CONTRIBUTING.md

@@ -0,0 +1,13 @@
+## Contributing 
+
+- With issues:
+  - Use the search tool before opening a new issue.
+  - Please provide source code and commit sha if you found a bug.
+  - Review existing issues and provide feedback or react to them.
+
+- With pull requests:
+  - Open your pull request against `master`
+  - Your pull request should have no more than two commits, if not you should squash them.
+  - It should pass all tests in the available continuous integrations systems such as TravisCI.
+  - You should add/modify tests to cover your proposed code changes.
+  - If your pull request contains a new feature, please document it on the README.

vendor/github.com/graph-gophers/graphql-go/LICENSE

@@ -0,0 +1,24 @@
+Copyright (c) 2016 Richard Musiol. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/graph-gophers/graphql-go/README.md

@@ -0,0 +1,169 @@
+# graphql-go [![Sourcegraph](https://sourcegraph.com/github.com/graph-gophers/graphql-go/-/badge.svg)](https://sourcegraph.com/github.com/graph-gophers/graphql-go?badge) [![Build Status](https://graph-gophers.semaphoreci.com/badges/graphql-go/branches/master.svg?style=shields)](https://graph-gophers.semaphoreci.com/projects/graphql-go) [![GoDoc](https://godoc.org/github.com/graph-gophers/graphql-go?status.svg)](https://godoc.org/github.com/graph-gophers/graphql-go)
+
+<p align="center"><img src="docs/img/logo.png" width="300"></p>
+
+The goal of this project is to provide full support of the [GraphQL draft specification](https://facebook.github.io/graphql/draft) with a set of idiomatic, easy to use Go packages.
+
+While still under heavy development (`internal` APIs are almost certainly subject to change), this library is
+safe for production use.
+
+## Features
+
+- minimal API
+- support for `context.Context`
+- support for the `OpenTracing` standard
+- schema type-checking against resolvers
+- resolvers are matched to the schema based on method sets (can resolve a GraphQL schema with a Go interface or Go struct).
+- handles panics in resolvers
+- parallel execution of resolvers
+- subscriptions
+   - [sample WS transport](https://github.com/graph-gophers/graphql-transport-ws)
+
+## Roadmap
+
+We're trying out the GitHub Project feature to manage `graphql-go`'s [development roadmap](https://github.com/graph-gophers/graphql-go/projects/1).
+Feedback is welcome and appreciated.
+
+## (Some) Documentation
+
+### Basic Sample
+
+```go
+package main
+
+import (
+        "log"
+        "net/http"
+
+        graphql "github.com/graph-gophers/graphql-go"
+        "github.com/graph-gophers/graphql-go/relay"
+)
+
+type query struct{}
+
+func (_ *query) Hello() string { return "Hello, world!" }
+
+func main() {
+        s := `
+                type Query {
+                        hello: String!
+                }
+        `
+        schema := graphql.MustParseSchema(s, &query{})
+        http.Handle("/query", &relay.Handler{Schema: schema})
+        log.Fatal(http.ListenAndServe(":8080", nil))
+}
+```
+
+To test:
+	    
+```sh
+curl -XPOST -d '{"query": "{ hello }"}' localhost:8080/query
+```
+
+### Resolvers
+
+A resolver must have one method or field for each field of the GraphQL type it resolves. The method or field name has to be [exported](https://golang.org/ref/spec#Exported_identifiers) and match the schema's field's name in a non-case-sensitive way.
+You can use struct fields as resolvers by using `SchemaOpt: UseFieldResolvers()`. For example,
+```
+opts := []graphql.SchemaOpt{graphql.UseFieldResolvers()}
+schema := graphql.MustParseSchema(s, &query{}, opts...)
+```   
+
+When using `UseFieldResolvers` schema option, a struct field will be used *only* when:
+- there is no method for a struct field
+- a struct field does not implement an interface method
+- a struct field does not have arguments
+
+The method has up to two arguments:
+
+- Optional `context.Context` argument.
+- Mandatory `*struct { ... }` argument if the corresponding GraphQL field has arguments. The names of the struct fields have to be [exported](https://golang.org/ref/spec#Exported_identifiers) and have to match the names of the GraphQL arguments in a non-case-sensitive way.
+
+The method has up to two results:
+
+- The GraphQL field's value as determined by the resolver.
+- Optional `error` result.
+
+Example for a simple resolver method:
+
+```go
+func (r *helloWorldResolver) Hello() string {
+	return "Hello world!"
+}
+```
+
+The following signature is also allowed:
+
+```go
+func (r *helloWorldResolver) Hello(ctx context.Context) (string, error) {
+	return "Hello world!", nil
+}
+```
+
+### Schema Options
+
+- `UseStringDescriptions()` enables the usage of double quoted and triple quoted. When this is not enabled, comments are parsed as descriptions instead.
+- `UseFieldResolvers()` specifies whether to use struct field resolvers.
+- `MaxDepth(n int)` specifies the maximum field nesting depth in a query. The default is 0 which disables max depth checking.
+- `MaxParallelism(n int)` specifies the maximum number of resolvers per request allowed to run in parallel. The default is 10.
+- `Tracer(tracer trace.Tracer)` is used to trace queries and fields. It defaults to `trace.OpenTracingTracer`.
+- `ValidationTracer(tracer trace.ValidationTracer)` is used to trace validation errors. It defaults to `trace.NoopValidationTracer`.
+- `Logger(logger log.Logger)` is used to log panics during query execution. It defaults to `exec.DefaultLogger`.
+- `PanicHandler(panicHandler errors.PanicHandler)` is used to transform panics into errors during query execution. It defaults to `errors.DefaultPanicHandler`.
+- `DisableIntrospection()` disables introspection queries.
+
+### Custom Errors
+
+Errors returned by resolvers can include custom extensions by implementing the `ResolverError` interface:
+
+```go
+type ResolverError interface {
+	error
+	Extensions() map[string]interface{}
+}
+```
+
+Example of a simple custom error:
+
+```go
+type droidNotFoundError struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
+func (e droidNotFoundError) Error() string {
+	return fmt.Sprintf("error [%s]: %s", e.Code, e.Message)
+}
+
+func (e droidNotFoundError) Extensions() map[string]interface{} {
+	return map[string]interface{}{
+		"code":    e.Code,
+		"message": e.Message,
+	}
+}
+```
+
+Which could produce a GraphQL error such as:
+
+```go
+{
+  "errors": [
+    {
+      "message": "error [NotFound]: This is not the droid you are looking for",
+      "path": [
+        "droid"
+      ],
+      "extensions": {
+        "code": "NotFound",
+        "message": "This is not the droid you are looking for"
+      }
+    }
+  ],
+  "data": null
+}
+```
+
+### [Examples](https://github.com/graph-gophers/graphql-go/wiki/Examples)
+
+### [Companies that use this library](https://github.com/graph-gophers/graphql-go/wiki/Users)

vendor/github.com/graph-gophers/graphql-go/decode/decode.go

@@ -0,0 +1,13 @@
+package decode
+
+// Unmarshaler defines the api of Go types mapped to custom GraphQL scalar types
+type Unmarshaler interface {
+	// ImplementsGraphQLType maps the implementing custom Go type
+	// to the GraphQL scalar type in the schema.
+	ImplementsGraphQLType(name string) bool
+	// UnmarshalGraphQL is the custom unmarshaler for the implementing type
+	//
+	// This function will be called whenever you use the
+	// custom GraphQL scalar type as an input
+	UnmarshalGraphQL(input interface{}) error
+}

vendor/github.com/graph-gophers/graphql-go/errors/errors.go

@@ -0,0 +1,59 @@
+package errors
+
+import (
+	"fmt"
+)
+
+type QueryError struct {
+	Err           error                  `json:"-"` // Err holds underlying if available
+	Message       string                 `json:"message"`
+	Locations     []Location             `json:"locations,omitempty"`
+	Path          []interface{}          `json:"path,omitempty"`
+	Rule          string                 `json:"-"`
+	ResolverError error                  `json:"-"`
+	Extensions    map[string]interface{} `json:"extensions,omitempty"`
+}
+
+type Location struct {
+	Line   int `json:"line"`
+	Column int `json:"column"`
+}
+
+func (a Location) Before(b Location) bool {
+	return a.Line < b.Line || (a.Line == b.Line && a.Column < b.Column)
+}
+
+func Errorf(format string, a ...interface{}) *QueryError {
+	// similar to fmt.Errorf, Errorf will wrap the last argument if it is an instance of error
+	var err error
+	if n := len(a); n > 0 {
+		if v, ok := a[n-1].(error); ok {
+			err = v
+		}
+	}
+
+	return &QueryError{
+		Err:     err,
+		Message: fmt.Sprintf(format, a...),
+	}
+}
+
+func (err *QueryError) Error() string {
+	if err == nil {
+		return "<nil>"
+	}
+	str := fmt.Sprintf("graphql: %s", err.Message)
+	for _, loc := range err.Locations {
+		str += fmt.Sprintf(" (line %d, column %d)", loc.Line, loc.Column)
+	}
+	return str
+}
+
+func (err *QueryError) Unwrap() error {
+	if err == nil {
+		return nil
+	}
+	return err.Err
+}
+
+var _ error = &QueryError{}

vendor/github.com/graph-gophers/graphql-go/errors/panic_handler.go

@@ -0,0 +1,18 @@
+package errors
+
+import (
+	"context"
+)
+
+// PanicHandler is the interface used to create custom panic errors that occur during query execution
+type PanicHandler interface {
+	MakePanicError(ctx context.Context, value interface{}) *QueryError
+}
+
+// DefaultPanicHandler is the default PanicHandler
+type DefaultPanicHandler struct{}
+
+// MakePanicError creates a new QueryError from a panic that occurred during execution
+func (h *DefaultPanicHandler) MakePanicError(ctx context.Context, value interface{}) *QueryError {
+	return Errorf("panic occurred: %v", value)
+}

vendor/github.com/graph-gophers/graphql-go/graphql.go

@@ -0,0 +1,339 @@
+package graphql
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/graph-gophers/graphql-go/errors"
+	"github.com/graph-gophers/graphql-go/internal/common"
+	"github.com/graph-gophers/graphql-go/internal/exec"
+	"github.com/graph-gophers/graphql-go/internal/exec/resolvable"
+	"github.com/graph-gophers/graphql-go/internal/exec/selected"
+	"github.com/graph-gophers/graphql-go/internal/query"
+	"github.com/graph-gophers/graphql-go/internal/schema"
+	"github.com/graph-gophers/graphql-go/internal/validation"
+	"github.com/graph-gophers/graphql-go/introspection"
+	"github.com/graph-gophers/graphql-go/log"
+	"github.com/graph-gophers/graphql-go/trace"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+// ParseSchema parses a GraphQL schema and attaches the given root resolver. It returns an error if
+// the Go type signature of the resolvers does not match the schema. If nil is passed as the
+// resolver, then the schema can not be executed, but it may be inspected (e.g. with ToJSON).
+func ParseSchema(schemaString string, resolver interface{}, opts ...SchemaOpt) (*Schema, error) {
+	s := &Schema{
+		schema:         schema.New(),
+		maxParallelism: 10,
+		tracer:         trace.OpenTracingTracer{},
+		logger:         &log.DefaultLogger{},
+		panicHandler:   &errors.DefaultPanicHandler{},
+	}
+	for _, opt := range opts {
+		opt(s)
+	}
+
+	if s.validationTracer == nil {
+		if tracer, ok := s.tracer.(trace.ValidationTracerContext); ok {
+			s.validationTracer = tracer
+		} else {
+			s.validationTracer = &validationBridgingTracer{tracer: trace.NoopValidationTracer{}}
+		}
+	}
+
+	if err := schema.Parse(s.schema, schemaString, s.useStringDescriptions); err != nil {
+		return nil, err
+	}
+	if err := s.validateSchema(); err != nil {
+		return nil, err
+	}
+
+	r, err := resolvable.ApplyResolver(s.schema, resolver)
+	if err != nil {
+		return nil, err
+	}
+	s.res = r
+
+	return s, nil
+}
+
+// MustParseSchema calls ParseSchema and panics on error.
+func MustParseSchema(schemaString string, resolver interface{}, opts ...SchemaOpt) *Schema {
+	s, err := ParseSchema(schemaString, resolver, opts...)
+	if err != nil {
+		panic(err)
+	}
+	return s
+}
+
+// Schema represents a GraphQL schema with an optional resolver.
+type Schema struct {
+	schema *types.Schema
+	res    *resolvable.Schema
+
+	maxDepth                 int
+	maxParallelism           int
+	tracer                   trace.Tracer
+	validationTracer         trace.ValidationTracerContext
+	logger                   log.Logger
+	panicHandler             errors.PanicHandler
+	useStringDescriptions    bool
+	disableIntrospection     bool
+	subscribeResolverTimeout time.Duration
+}
+
+func (s *Schema) ASTSchema() *types.Schema {
+	return s.schema
+}
+
+// SchemaOpt is an option to pass to ParseSchema or MustParseSchema.
+type SchemaOpt func(*Schema)
+
+// UseStringDescriptions enables the usage of double quoted and triple quoted
+// strings as descriptions as per the June 2018 spec
+// https://facebook.github.io/graphql/June2018/. When this is not enabled,
+// comments are parsed as descriptions instead.
+func UseStringDescriptions() SchemaOpt {
+	return func(s *Schema) {
+		s.useStringDescriptions = true
+	}
+}
+
+// UseFieldResolvers specifies whether to use struct field resolvers
+func UseFieldResolvers() SchemaOpt {
+	return func(s *Schema) {
+		s.schema.UseFieldResolvers = true
+	}
+}
+
+// MaxDepth specifies the maximum field nesting depth in a query. The default is 0 which disables max depth checking.
+func MaxDepth(n int) SchemaOpt {
+	return func(s *Schema) {
+		s.maxDepth = n
+	}
+}
+
+// MaxParallelism specifies the maximum number of resolvers per request allowed to run in parallel. The default is 10.
+func MaxParallelism(n int) SchemaOpt {
+	return func(s *Schema) {
+		s.maxParallelism = n
+	}
+}
+
+// Tracer is used to trace queries and fields. It defaults to trace.OpenTracingTracer.
+func Tracer(tracer trace.Tracer) SchemaOpt {
+	return func(s *Schema) {
+		s.tracer = tracer
+	}
+}
+
+// ValidationTracer is used to trace validation errors. It defaults to trace.NoopValidationTracer.
+// Deprecated: context is needed to support tracing correctly. Use a Tracer which implements trace.ValidationTracerContext.
+func ValidationTracer(tracer trace.ValidationTracer) SchemaOpt { //nolint:staticcheck
+	return func(s *Schema) {
+		s.validationTracer = &validationBridgingTracer{tracer: tracer}
+	}
+}
+
+// Logger is used to log panics during query execution. It defaults to exec.DefaultLogger.
+func Logger(logger log.Logger) SchemaOpt {
+	return func(s *Schema) {
+		s.logger = logger
+	}
+}
+
+// PanicHandler is used to customize the panic errors during query execution.
+// It defaults to errors.DefaultPanicHandler.
+func PanicHandler(panicHandler errors.PanicHandler) SchemaOpt {
+	return func(s *Schema) {
+		s.panicHandler = panicHandler
+	}
+}
+
+// DisableIntrospection disables introspection queries.
+func DisableIntrospection() SchemaOpt {
+	return func(s *Schema) {
+		s.disableIntrospection = true
+	}
+}
+
+// SubscribeResolverTimeout is an option to control the amount of time
+// we allow for a single subscribe message resolver to complete it's job
+// before it times out and returns an error to the subscriber.
+func SubscribeResolverTimeout(timeout time.Duration) SchemaOpt {
+	return func(s *Schema) {
+		s.subscribeResolverTimeout = timeout
+	}
+}
+
+// Response represents a typical response of a GraphQL server. It may be encoded to JSON directly or
+// it may be further processed to a custom response type, for example to include custom error data.
+// Errors are intentionally serialized first based on the advice in https://github.com/facebook/graphql/commit/7b40390d48680b15cb93e02d46ac5eb249689876#diff-757cea6edf0288677a9eea4cfc801d87R107
+type Response struct {
+	Errors     []*errors.QueryError   `json:"errors,omitempty"`
+	Data       json.RawMessage        `json:"data,omitempty"`
+	Extensions map[string]interface{} `json:"extensions,omitempty"`
+}
+
+// Validate validates the given query with the schema.
+func (s *Schema) Validate(queryString string) []*errors.QueryError {
+	return s.ValidateWithVariables(queryString, nil)
+}
+
+// ValidateWithVariables validates the given query with the schema and the input variables.
+func (s *Schema) ValidateWithVariables(queryString string, variables map[string]interface{}) []*errors.QueryError {
+	doc, qErr := query.Parse(queryString)
+	if qErr != nil {
+		return []*errors.QueryError{qErr}
+	}
+
+	return validation.Validate(s.schema, doc, variables, s.maxDepth)
+}
+
+// Exec executes the given query with the schema's resolver. It panics if the schema was created
+// without a resolver. If the context get cancelled, no further resolvers will be called and a
+// the context error will be returned as soon as possible (not immediately).
+func (s *Schema) Exec(ctx context.Context, queryString string, operationName string, variables map[string]interface{}) *Response {
+	if !s.res.Resolver.IsValid() {
+		panic("schema created without resolver, can not exec")
+	}
+	return s.exec(ctx, queryString, operationName, variables, s.res)
+}
+
+func (s *Schema) exec(ctx context.Context, queryString string, operationName string, variables map[string]interface{}, res *resolvable.Schema) *Response {
+	doc, qErr := query.Parse(queryString)
+	if qErr != nil {
+		return &Response{Errors: []*errors.QueryError{qErr}}
+	}
+
+	validationFinish := s.validationTracer.TraceValidation(ctx)
+	errs := validation.Validate(s.schema, doc, variables, s.maxDepth)
+	validationFinish(errs)
+	if len(errs) != 0 {
+		return &Response{Errors: errs}
+	}
+
+	op, err := getOperation(doc, operationName)
+	if err != nil {
+		return &Response{Errors: []*errors.QueryError{errors.Errorf("%s", err)}}
+	}
+
+	// If the optional "operationName" POST parameter is not provided then
+	// use the query's operation name for improved tracing.
+	if operationName == "" {
+		operationName = op.Name.Name
+	}
+
+	// Subscriptions are not valid in Exec. Use schema.Subscribe() instead.
+	if op.Type == query.Subscription {
+		return &Response{Errors: []*errors.QueryError{{Message: "graphql-ws protocol header is missing"}}}
+	}
+	if op.Type == query.Mutation {
+		if _, ok := s.schema.EntryPoints["mutation"]; !ok {
+			return &Response{Errors: []*errors.QueryError{{Message: "no mutations are offered by the schema"}}}
+		}
+	}
+
+	// Fill in variables with the defaults from the operation
+	if variables == nil {
+		variables = make(map[string]interface{}, len(op.Vars))
+	}
+	for _, v := range op.Vars {
+		if _, ok := variables[v.Name.Name]; !ok && v.Default != nil {
+			variables[v.Name.Name] = v.Default.Deserialize(nil)
+		}
+	}
+
+	r := &exec.Request{
+		Request: selected.Request{
+			Doc:                  doc,
+			Vars:                 variables,
+			Schema:               s.schema,
+			DisableIntrospection: s.disableIntrospection,
+		},
+		Limiter:      make(chan struct{}, s.maxParallelism),
+		Tracer:       s.tracer,
+		Logger:       s.logger,
+		PanicHandler: s.panicHandler,
+	}
+	varTypes := make(map[string]*introspection.Type)
+	for _, v := range op.Vars {
+		t, err := common.ResolveType(v.Type, s.schema.Resolve)
+		if err != nil {
+			return &Response{Errors: []*errors.QueryError{err}}
+		}
+		varTypes[v.Name.Name] = introspection.WrapType(t)
+	}
+	traceCtx, finish := s.tracer.TraceQuery(ctx, queryString, operationName, variables, varTypes)
+	data, errs := r.Execute(traceCtx, res, op)
+	finish(errs)
+
+	return &Response{
+		Data:   data,
+		Errors: errs,
+	}
+}
+
+func (s *Schema) validateSchema() error {
+	// https://graphql.github.io/graphql-spec/June2018/#sec-Root-Operation-Types
+	// > The query root operation type must be provided and must be an Object type.
+	if err := validateRootOp(s.schema, "query", true); err != nil {
+		return err
+	}
+	// > The mutation root operation type is optional; if it is not provided, the service does not support mutations.
+	// > If it is provided, it must be an Object type.
+	if err := validateRootOp(s.schema, "mutation", false); err != nil {
+		return err
+	}
+	// > Similarly, the subscription root operation type is also optional; if it is not provided, the service does not
+	// > support subscriptions. If it is provided, it must be an Object type.
+	if err := validateRootOp(s.schema, "subscription", false); err != nil {
+		return err
+	}
+	return nil
+}
+
+type validationBridgingTracer struct {
+	tracer trace.ValidationTracer //nolint:staticcheck
+}
+
+func (t *validationBridgingTracer) TraceValidation(context.Context) trace.TraceValidationFinishFunc {
+	return t.tracer.TraceValidation()
+}
+
+func validateRootOp(s *types.Schema, name string, mandatory bool) error {
+	t, ok := s.EntryPoints[name]
+	if !ok {
+		if mandatory {
+			return fmt.Errorf("root operation %q must be defined", name)
+		}
+		return nil
+	}
+	if t.Kind() != "OBJECT" {
+		return fmt.Errorf("root operation %q must be an OBJECT", name)
+	}
+	return nil
+}
+
+func getOperation(document *types.ExecutableDefinition, operationName string) (*types.OperationDefinition, error) {
+	if len(document.Operations) == 0 {
+		return nil, fmt.Errorf("no operations in query document")
+	}
+
+	if operationName == "" {
+		if len(document.Operations) > 1 {
+			return nil, fmt.Errorf("more than one operation in query document and no operation name given")
+		}
+		for _, op := range document.Operations {
+			return op, nil // return the one and only operation
+		}
+	}
+
+	op := document.Operations.Get(operationName)
+	if op == nil {
+		return nil, fmt.Errorf("no operation with name %q", operationName)
+	}
+	return op, nil
+}

vendor/github.com/graph-gophers/graphql-go/id.go

@@ -0,0 +1,30 @@
+package graphql
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// ID represents GraphQL's "ID" scalar type. A custom type may be used instead.
+type ID string
+
+func (ID) ImplementsGraphQLType(name string) bool {
+	return name == "ID"
+}
+
+func (id *ID) UnmarshalGraphQL(input interface{}) error {
+	var err error
+	switch input := input.(type) {
+	case string:
+		*id = ID(input)
+	case int32:
+		*id = ID(strconv.Itoa(int(input)))
+	default:
+		err = fmt.Errorf("wrong type for ID: %T", input)
+	}
+	return err
+}
+
+func (id ID) MarshalJSON() ([]byte, error) {
+	return strconv.AppendQuote(nil, string(id)), nil
+}

vendor/github.com/graph-gophers/graphql-go/internal/common/blockstring.go

@@ -0,0 +1,103 @@
+// MIT License
+//
+// Copyright (c) 2019 GraphQL Contributors
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// This implementation has been adapted from the graphql-js reference implementation
+// https://github.com/graphql/graphql-js/blob/5eb7c4ded7ceb83ac742149cbe0dae07a8af9a30/src/language/blockString.js
+// which is released under the MIT License above.
+
+package common
+
+import (
+	"strings"
+)
+
+// Produces the value of a block string from its parsed raw value, similar to
+// CoffeeScript's block string, Python's docstring trim or Ruby's strip_heredoc.
+//
+// This implements the GraphQL spec's BlockStringValue() static algorithm.
+func blockString(raw string) string {
+	lines := strings.Split(raw, "\n")
+
+	// Remove common indentation from all lines except the first (which has none)
+	ind := blockStringIndentation(lines)
+	if ind > 0 {
+		for i := 1; i < len(lines); i++ {
+			l := lines[i]
+			if len(l) < ind {
+				lines[i] = ""
+				continue
+			}
+			lines[i] = l[ind:]
+		}
+	}
+
+	// Remove leading and trailing blank lines
+	trimStart := 0
+	for i := 0; i < len(lines) && isBlank(lines[i]); i++ {
+		trimStart++
+	}
+	lines = lines[trimStart:]
+	trimEnd := 0
+	for i := len(lines) - 1; i > 0 && isBlank(lines[i]); i-- {
+		trimEnd++
+	}
+	lines = lines[:len(lines)-trimEnd]
+
+	return strings.Join(lines, "\n")
+}
+
+func blockStringIndentation(lines []string) int {
+	var commonIndent *int
+	for i := 1; i < len(lines); i++ {
+		l := lines[i]
+		indent := leadingWhitespace(l)
+		if indent == len(l) {
+			// don't consider blank/empty lines
+			continue
+		}
+		if indent == 0 {
+			return 0
+		}
+		if commonIndent == nil || indent < *commonIndent {
+			commonIndent = &indent
+		}
+	}
+	if commonIndent == nil {
+		return 0
+	}
+	return *commonIndent
+}
+
+func isBlank(s string) bool {
+	return len(s) == 0 || leadingWhitespace(s) == len(s)
+}
+
+func leadingWhitespace(s string) int {
+	i := 0
+	for _, r := range s {
+		if r != '\t' && r != ' ' {
+			break
+		}
+		i++
+	}
+	return i
+}

vendor/github.com/graph-gophers/graphql-go/internal/common/directive.go

@@ -0,0 +1,18 @@
+package common
+
+import "github.com/graph-gophers/graphql-go/types"
+
+func ParseDirectives(l *Lexer) types.DirectiveList {
+	var directives types.DirectiveList
+	for l.Peek() == '@' {
+		l.ConsumeToken('@')
+		d := &types.Directive{}
+		d.Name = l.ConsumeIdentWithLoc()
+		d.Name.Loc.Column--
+		if l.Peek() == '(' {
+			d.Arguments = ParseArgumentList(l)
+		}
+		directives = append(directives, d)
+	}
+	return directives
+}

vendor/github.com/graph-gophers/graphql-go/internal/common/lexer.go

@@ -0,0 +1,229 @@
+package common
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+	"strings"
+	"text/scanner"
+
+	"github.com/graph-gophers/graphql-go/errors"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+type syntaxError string
+
+type Lexer struct {
+	sc                    *scanner.Scanner
+	next                  rune
+	comment               bytes.Buffer
+	useStringDescriptions bool
+}
+
+type Ident struct {
+	Name string
+	Loc  errors.Location
+}
+
+func NewLexer(s string, useStringDescriptions bool) *Lexer {
+	sc := &scanner.Scanner{
+		Mode: scanner.ScanIdents | scanner.ScanInts | scanner.ScanFloats | scanner.ScanStrings,
+	}
+	sc.Init(strings.NewReader(s))
+
+	l := Lexer{sc: sc, useStringDescriptions: useStringDescriptions}
+	l.sc.Error = l.CatchScannerError
+
+	return &l
+}
+
+func (l *Lexer) CatchSyntaxError(f func()) (errRes *errors.QueryError) {
+	defer func() {
+		if err := recover(); err != nil {
+			if err, ok := err.(syntaxError); ok {
+				errRes = errors.Errorf("syntax error: %s", err)
+				errRes.Locations = []errors.Location{l.Location()}
+				return
+			}
+			panic(err)
+		}
+	}()
+
+	f()
+	return
+}
+
+func (l *Lexer) Peek() rune {
+	return l.next
+}
+
+// ConsumeWhitespace consumes whitespace and tokens equivalent to whitespace (e.g. commas and comments).
+//
+// Consumed comment characters will build the description for the next type or field encountered.
+// The description is available from `DescComment()`, and will be reset every time `ConsumeWhitespace()` is
+// executed unless l.useStringDescriptions is set.
+func (l *Lexer) ConsumeWhitespace() {
+	l.comment.Reset()
+	for {
+		l.next = l.sc.Scan()
+
+		if l.next == ',' {
+			// Similar to white space and line terminators, commas (',') are used to improve the
+			// legibility of source text and separate lexical tokens but are otherwise syntactically and
+			// semantically insignificant within GraphQL documents.
+			//
+			// http://facebook.github.io/graphql/draft/#sec-Insignificant-Commas
+			continue
+		}
+
+		if l.next == '#' {
+			// GraphQL source documents may contain single-line comments, starting with the '#' marker.
+			//
+			// A comment can contain any Unicode code point except `LineTerminator` so a comment always
+			// consists of all code points starting with the '#' character up to but not including the
+			// line terminator.
+			l.consumeComment()
+			continue
+		}
+
+		break
+	}
+}
+
+// consumeDescription optionally consumes a description based on the June 2018 graphql spec if any are present.
+//
+// Single quote strings are also single line. Triple quote strings can be multi-line. Triple quote strings
+// whitespace trimmed on both ends.
+// If a description is found, consume any following comments as well
+//
+// http://facebook.github.io/graphql/June2018/#sec-Descriptions
+func (l *Lexer) consumeDescription() string {
+	// If the next token is not a string, we don't consume it
+	if l.next != scanner.String {
+		return ""
+	}
+	// Triple quote string is an empty "string" followed by an open quote due to the way the parser treats strings as one token
+	var desc string
+	if l.sc.Peek() == '"' {
+		desc = l.consumeTripleQuoteComment()
+	} else {
+		desc = l.consumeStringComment()
+	}
+	l.ConsumeWhitespace()
+	return desc
+}
+
+func (l *Lexer) ConsumeIdent() string {
+	name := l.sc.TokenText()
+	l.ConsumeToken(scanner.Ident)
+	return name
+}
+
+func (l *Lexer) ConsumeIdentWithLoc() types.Ident {
+	loc := l.Location()
+	name := l.sc.TokenText()
+	l.ConsumeToken(scanner.Ident)
+	return types.Ident{Name: name, Loc: loc}
+}
+
+func (l *Lexer) ConsumeKeyword(keyword string) {
+	if l.next != scanner.Ident || l.sc.TokenText() != keyword {
+		l.SyntaxError(fmt.Sprintf("unexpected %q, expecting %q", l.sc.TokenText(), keyword))
+	}
+	l.ConsumeWhitespace()
+}
+
+func (l *Lexer) ConsumeLiteral() *types.PrimitiveValue {
+	lit := &types.PrimitiveValue{Type: l.next, Text: l.sc.TokenText()}
+	l.ConsumeWhitespace()
+	return lit
+}
+
+func (l *Lexer) ConsumeToken(expected rune) {
+	if l.next != expected {
+		l.SyntaxError(fmt.Sprintf("unexpected %q, expecting %s", l.sc.TokenText(), scanner.TokenString(expected)))
+	}
+	l.ConsumeWhitespace()
+}
+
+func (l *Lexer) DescComment() string {
+	comment := l.comment.String()
+	desc := l.consumeDescription()
+	if l.useStringDescriptions {
+		return desc
+	}
+	return comment
+}
+
+func (l *Lexer) SyntaxError(message string) {
+	panic(syntaxError(message))
+}
+
+func (l *Lexer) Location() errors.Location {
+	return errors.Location{
+		Line:   l.sc.Line,
+		Column: l.sc.Column,
+	}
+}
+
+func (l *Lexer) consumeTripleQuoteComment() string {
+	l.next = l.sc.Next()
+	if l.next != '"' {
+		panic("consumeTripleQuoteComment used in wrong context: no third quote?")
+	}
+
+	var buf bytes.Buffer
+	var numQuotes int
+	for {
+		l.next = l.sc.Next()
+		if l.next == '"' {
+			numQuotes++
+		} else {
+			numQuotes = 0
+		}
+		buf.WriteRune(l.next)
+		if numQuotes == 3 || l.next == scanner.EOF {
+			break
+		}
+	}
+	val := buf.String()
+	val = val[:len(val)-numQuotes]
+	return blockString(val)
+}
+
+func (l *Lexer) consumeStringComment() string {
+	val, err := strconv.Unquote(l.sc.TokenText())
+	if err != nil {
+		panic(err)
+	}
+	return val
+}
+
+// consumeComment consumes all characters from `#` to the first encountered line terminator.
+// The characters are appended to `l.comment`.
+func (l *Lexer) consumeComment() {
+	if l.next != '#' {
+		panic("consumeComment used in wrong context")
+	}
+
+	// TODO: count and trim whitespace so we can dedent any following lines.
+	if l.sc.Peek() == ' ' {
+		l.sc.Next()
+	}
+
+	if l.comment.Len() > 0 {
+		l.comment.WriteRune('\n')
+	}
+
+	for {
+		next := l.sc.Next()
+		if next == '\r' || next == '\n' || next == scanner.EOF {
+			break
+		}
+		l.comment.WriteRune(next)
+	}
+}
+
+func (l *Lexer) CatchScannerError(s *scanner.Scanner, msg string) {
+	l.SyntaxError(msg)
+}

vendor/github.com/graph-gophers/graphql-go/internal/common/literals.go

@@ -0,0 +1,58 @@
+package common
+
+import (
+	"text/scanner"
+
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+func ParseLiteral(l *Lexer, constOnly bool) types.Value {
+	loc := l.Location()
+	switch l.Peek() {
+	case '$':
+		if constOnly {
+			l.SyntaxError("variable not allowed")
+			panic("unreachable")
+		}
+		l.ConsumeToken('$')
+		return &types.Variable{Name: l.ConsumeIdent(), Loc: loc}
+
+	case scanner.Int, scanner.Float, scanner.String, scanner.Ident:
+		lit := l.ConsumeLiteral()
+		if lit.Type == scanner.Ident && lit.Text == "null" {
+			return &types.NullValue{Loc: loc}
+		}
+		lit.Loc = loc
+		return lit
+	case '-':
+		l.ConsumeToken('-')
+		lit := l.ConsumeLiteral()
+		lit.Text = "-" + lit.Text
+		lit.Loc = loc
+		return lit
+	case '[':
+		l.ConsumeToken('[')
+		var list []types.Value
+		for l.Peek() != ']' {
+			list = append(list, ParseLiteral(l, constOnly))
+		}
+		l.ConsumeToken(']')
+		return &types.ListValue{Values: list, Loc: loc}
+
+	case '{':
+		l.ConsumeToken('{')
+		var fields []*types.ObjectField
+		for l.Peek() != '}' {
+			name := l.ConsumeIdentWithLoc()
+			l.ConsumeToken(':')
+			value := ParseLiteral(l, constOnly)
+			fields = append(fields, &types.ObjectField{Name: name, Value: value})
+		}
+		l.ConsumeToken('}')
+		return &types.ObjectValue{Fields: fields, Loc: loc}
+
+	default:
+		l.SyntaxError("invalid value")
+		panic("unreachable")
+	}
+}

vendor/github.com/graph-gophers/graphql-go/internal/common/types.go

@@ -0,0 +1,67 @@
+package common
+
+import (
+	"github.com/graph-gophers/graphql-go/errors"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+func ParseType(l *Lexer) types.Type {
+	t := parseNullType(l)
+	if l.Peek() == '!' {
+		l.ConsumeToken('!')
+		return &types.NonNull{OfType: t}
+	}
+	return t
+}
+
+func parseNullType(l *Lexer) types.Type {
+	if l.Peek() == '[' {
+		l.ConsumeToken('[')
+		ofType := ParseType(l)
+		l.ConsumeToken(']')
+		return &types.List{OfType: ofType}
+	}
+
+	return &types.TypeName{Ident: l.ConsumeIdentWithLoc()}
+}
+
+type Resolver func(name string) types.Type
+
+// ResolveType attempts to resolve a type's name against a resolving function.
+// This function is used when one needs to check if a TypeName exists in the resolver (typically a Schema).
+//
+// In the example below, ResolveType would be used to check if the resolving function
+// returns a valid type for Dimension:
+//
+// type Profile {
+//    picture(dimensions: Dimension): Url
+// }
+//
+// ResolveType recursively unwraps List and NonNull types until a NamedType is reached.
+func ResolveType(t types.Type, resolver Resolver) (types.Type, *errors.QueryError) {
+	switch t := t.(type) {
+	case *types.List:
+		ofType, err := ResolveType(t.OfType, resolver)
+		if err != nil {
+			return nil, err
+		}
+		return &types.List{OfType: ofType}, nil
+	case *types.NonNull:
+		ofType, err := ResolveType(t.OfType, resolver)
+		if err != nil {
+			return nil, err
+		}
+		return &types.NonNull{OfType: ofType}, nil
+	case *types.TypeName:
+		refT := resolver(t.Name)
+		if refT == nil {
+			err := errors.Errorf("Unknown type %q.", t.Name)
+			err.Rule = "KnownTypeNames"
+			err.Locations = []errors.Location{t.Loc}
+			return nil, err
+		}
+		return refT, nil
+	default:
+		return t, nil
+	}
+}

vendor/github.com/graph-gophers/graphql-go/internal/common/values.go

@@ -0,0 +1,37 @@
+package common
+
+import (
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+func ParseInputValue(l *Lexer) *types.InputValueDefinition {
+	p := &types.InputValueDefinition{}
+	p.Loc = l.Location()
+	p.Desc = l.DescComment()
+	p.Name = l.ConsumeIdentWithLoc()
+	l.ConsumeToken(':')
+	p.TypeLoc = l.Location()
+	p.Type = ParseType(l)
+	if l.Peek() == '=' {
+		l.ConsumeToken('=')
+		p.Default = ParseLiteral(l, true)
+	}
+	p.Directives = ParseDirectives(l)
+	return p
+}
+
+func ParseArgumentList(l *Lexer) types.ArgumentList {
+	var args types.ArgumentList
+	l.ConsumeToken('(')
+	for l.Peek() != ')' {
+		name := l.ConsumeIdentWithLoc()
+		l.ConsumeToken(':')
+		value := ParseLiteral(l, false)
+		args = append(args, &types.Argument{
+			Name:  name,
+			Value: value,
+		})
+	}
+	l.ConsumeToken(')')
+	return args
+}

vendor/github.com/graph-gophers/graphql-go/internal/exec/exec.go

@@ -0,0 +1,381 @@
+package exec
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"sync"
+	"time"
+
+	"github.com/graph-gophers/graphql-go/errors"
+	"github.com/graph-gophers/graphql-go/internal/exec/resolvable"
+	"github.com/graph-gophers/graphql-go/internal/exec/selected"
+	"github.com/graph-gophers/graphql-go/internal/query"
+	"github.com/graph-gophers/graphql-go/log"
+	"github.com/graph-gophers/graphql-go/trace"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+type Request struct {
+	selected.Request
+	Limiter                  chan struct{}
+	Tracer                   trace.Tracer
+	Logger                   log.Logger
+	PanicHandler             errors.PanicHandler
+	SubscribeResolverTimeout time.Duration
+}
+
+func (r *Request) handlePanic(ctx context.Context) {
+	if value := recover(); value != nil {
+		r.Logger.LogPanic(ctx, value)
+		r.AddError(r.PanicHandler.MakePanicError(ctx, value))
+	}
+}
+
+type extensionser interface {
+	Extensions() map[string]interface{}
+}
+
+func (r *Request) Execute(ctx context.Context, s *resolvable.Schema, op *types.OperationDefinition) ([]byte, []*errors.QueryError) {
+	var out bytes.Buffer
+	func() {
+		defer r.handlePanic(ctx)
+		sels := selected.ApplyOperation(&r.Request, s, op)
+		r.execSelections(ctx, sels, nil, s, s.Resolver, &out, op.Type == query.Mutation)
+	}()
+
+	if err := ctx.Err(); err != nil {
+		return nil, []*errors.QueryError{errors.Errorf("%s", err)}
+	}
+
+	return out.Bytes(), r.Errs
+}
+
+type fieldToExec struct {
+	field    *selected.SchemaField
+	sels     []selected.Selection
+	resolver reflect.Value
+	out      *bytes.Buffer
+}
+
+func resolvedToNull(b *bytes.Buffer) bool {
+	return bytes.Equal(b.Bytes(), []byte("null"))
+}
+
+func (r *Request) execSelections(ctx context.Context, sels []selected.Selection, path *pathSegment, s *resolvable.Schema, resolver reflect.Value, out *bytes.Buffer, serially bool) {
+	async := !serially && selected.HasAsyncSel(sels)
+
+	var fields []*fieldToExec
+	collectFieldsToResolve(sels, s, resolver, &fields, make(map[string]*fieldToExec))
+
+	if async {
+		var wg sync.WaitGroup
+		wg.Add(len(fields))
+		for _, f := range fields {
+			go func(f *fieldToExec) {
+				defer wg.Done()
+				defer r.handlePanic(ctx)
+				f.out = new(bytes.Buffer)
+				execFieldSelection(ctx, r, s, f, &pathSegment{path, f.field.Alias}, true)
+			}(f)
+		}
+		wg.Wait()
+	} else {
+		for _, f := range fields {
+			f.out = new(bytes.Buffer)
+			execFieldSelection(ctx, r, s, f, &pathSegment{path, f.field.Alias}, true)
+		}
+	}
+
+	out.WriteByte('{')
+	for i, f := range fields {
+		// If a non-nullable child resolved to null, an error was added to the
+		// "errors" list in the response, so this field resolves to null.
+		// If this field is non-nullable, the error is propagated to its parent.
+		if _, ok := f.field.Type.(*types.NonNull); ok && resolvedToNull(f.out) {
+			out.Reset()
+			out.Write([]byte("null"))
+			return
+		}
+
+		if i > 0 {
+			out.WriteByte(',')
+		}
+		out.WriteByte('"')
+		out.WriteString(f.field.Alias)
+		out.WriteByte('"')
+		out.WriteByte(':')
+		out.Write(f.out.Bytes())
+	}
+	out.WriteByte('}')
+}
+
+func collectFieldsToResolve(sels []selected.Selection, s *resolvable.Schema, resolver reflect.Value, fields *[]*fieldToExec, fieldByAlias map[string]*fieldToExec) {
+	for _, sel := range sels {
+		switch sel := sel.(type) {
+		case *selected.SchemaField:
+			field, ok := fieldByAlias[sel.Alias]
+			if !ok { // validation already checked for conflict (TODO)
+				field = &fieldToExec{field: sel, resolver: resolver}
+				fieldByAlias[sel.Alias] = field
+				*fields = append(*fields, field)
+			}
+			field.sels = append(field.sels, sel.Sels...)
+
+		case *selected.TypenameField:
+			_, ok := fieldByAlias[sel.Alias]
+			if !ok {
+				res := reflect.ValueOf(typeOf(sel, resolver))
+				f := s.FieldTypename
+				f.TypeName = res.String()
+
+				sf := &selected.SchemaField{
+					Field:       f,
+					Alias:       sel.Alias,
+					FixedResult: res,
+				}
+
+				field := &fieldToExec{field: sf, resolver: resolver}
+				*fields = append(*fields, field)
+				fieldByAlias[sel.Alias] = field
+			}
+
+		case *selected.TypeAssertion:
+			out := resolver.Method(sel.MethodIndex).Call(nil)
+			if !out[1].Bool() {
+				continue
+			}
+			collectFieldsToResolve(sel.Sels, s, out[0], fields, fieldByAlias)
+
+		default:
+			panic("unreachable")
+		}
+	}
+}
+
+func typeOf(tf *selected.TypenameField, resolver reflect.Value) string {
+	if len(tf.TypeAssertions) == 0 {
+		return tf.Name
+	}
+	for name, a := range tf.TypeAssertions {
+		out := resolver.Method(a.MethodIndex).Call(nil)
+		if out[1].Bool() {
+			return name
+		}
+	}
+	return ""
+}
+
+func execFieldSelection(ctx context.Context, r *Request, s *resolvable.Schema, f *fieldToExec, path *pathSegment, applyLimiter bool) {
+	if applyLimiter {
+		r.Limiter <- struct{}{}
+	}
+
+	var result reflect.Value
+	var err *errors.QueryError
+
+	traceCtx, finish := r.Tracer.TraceField(ctx, f.field.TraceLabel, f.field.TypeName, f.field.Name, !f.field.Async, f.field.Args)
+	defer func() {
+		finish(err)
+	}()
+
+	err = func() (err *errors.QueryError) {
+		defer func() {
+			if panicValue := recover(); panicValue != nil {
+				r.Logger.LogPanic(ctx, panicValue)
+				err = r.PanicHandler.MakePanicError(ctx, panicValue)
+				err.Path = path.toSlice()
+			}
+		}()
+
+		if f.field.FixedResult.IsValid() {
+			result = f.field.FixedResult
+			return nil
+		}
+
+		if err := traceCtx.Err(); err != nil {
+			return errors.Errorf("%s", err) // don't execute any more resolvers if context got cancelled
+		}
+
+		res := f.resolver
+		if f.field.UseMethodResolver() {
+			var in []reflect.Value
+			if f.field.HasContext {
+				in = append(in, reflect.ValueOf(traceCtx))
+			}
+			if f.field.ArgsPacker != nil {
+				in = append(in, f.field.PackedArgs)
+			}
+			callOut := res.Method(f.field.MethodIndex).Call(in)
+			result = callOut[0]
+			if f.field.HasError && !callOut[1].IsNil() {
+				resolverErr := callOut[1].Interface().(error)
+				err := errors.Errorf("%s", resolverErr)
+				err.Path = path.toSlice()
+				err.ResolverError = resolverErr
+				if ex, ok := callOut[1].Interface().(extensionser); ok {
+					err.Extensions = ex.Extensions()
+				}
+				return err
+			}
+		} else {
+			// TODO extract out unwrapping ptr logic to a common place
+			if res.Kind() == reflect.Ptr {
+				res = res.Elem()
+			}
+			result = res.FieldByIndex(f.field.FieldIndex)
+		}
+		return nil
+	}()
+
+	if applyLimiter {
+		<-r.Limiter
+	}
+
+	if err != nil {
+		// If an error occurred while resolving a field, it should be treated as though the field
+		// returned null, and an error must be added to the "errors" list in the response.
+		r.AddError(err)
+		f.out.WriteString("null")
+		return
+	}
+
+	r.execSelectionSet(traceCtx, f.sels, f.field.Type, path, s, result, f.out)
+}
+
+func (r *Request) execSelectionSet(ctx context.Context, sels []selected.Selection, typ types.Type, path *pathSegment, s *resolvable.Schema, resolver reflect.Value, out *bytes.Buffer) {
+	t, nonNull := unwrapNonNull(typ)
+
+	// a reflect.Value of a nil interface will show up as an Invalid value
+	if resolver.Kind() == reflect.Invalid || ((resolver.Kind() == reflect.Ptr || resolver.Kind() == reflect.Interface) && resolver.IsNil()) {
+		// If a field of a non-null type resolves to null (either because the
+		// function to resolve the field returned null or because an error occurred),
+		// add an error to the "errors" list in the response.
+		if nonNull {
+			err := errors.Errorf("graphql: got nil for non-null %q", t)
+			err.Path = path.toSlice()
+			r.AddError(err)
+		}
+		out.WriteString("null")
+		return
+	}
+
+	switch t.(type) {
+	case *types.ObjectTypeDefinition, *types.InterfaceTypeDefinition, *types.Union:
+		r.execSelections(ctx, sels, path, s, resolver, out, false)
+		return
+	}
+
+	// Any pointers or interfaces at this point should be non-nil, so we can get the actual value of them
+	// for serialization
+	if resolver.Kind() == reflect.Ptr || resolver.Kind() == reflect.Interface {
+		resolver = resolver.Elem()
+	}
+
+	switch t := t.(type) {
+	case *types.List:
+		r.execList(ctx, sels, t, path, s, resolver, out)
+
+	case *types.ScalarTypeDefinition:
+		v := resolver.Interface()
+		data, err := json.Marshal(v)
+		if err != nil {
+			panic(errors.Errorf("could not marshal %v: %s", v, err))
+		}
+		out.Write(data)
+
+	case *types.EnumTypeDefinition:
+		var stringer fmt.Stringer = resolver
+		if s, ok := resolver.Interface().(fmt.Stringer); ok {
+			stringer = s
+		}
+		name := stringer.String()
+		var valid bool
+		for _, v := range t.EnumValuesDefinition {
+			if v.EnumValue == name {
+				valid = true
+				break
+			}
+		}
+		if !valid {
+			err := errors.Errorf("Invalid value %s.\nExpected type %s, found %s.", name, t.Name, name)
+			err.Path = path.toSlice()
+			r.AddError(err)
+			out.WriteString("null")
+			return
+		}
+		out.WriteByte('"')
+		out.WriteString(name)
+		out.WriteByte('"')
+
+	default:
+		panic("unreachable")
+	}
+}
+
+func (r *Request) execList(ctx context.Context, sels []selected.Selection, typ *types.List, path *pathSegment, s *resolvable.Schema, resolver reflect.Value, out *bytes.Buffer) {
+	l := resolver.Len()
+	entryouts := make([]bytes.Buffer, l)
+
+	if selected.HasAsyncSel(sels) {
+		// Limit the number of concurrent goroutines spawned as it can lead to large
+		// memory spikes for large lists.
+		concurrency := cap(r.Limiter)
+		sem := make(chan struct{}, concurrency)
+		for i := 0; i < l; i++ {
+			sem <- struct{}{}
+			go func(i int) {
+				defer func() { <-sem }()
+				defer r.handlePanic(ctx)
+				r.execSelectionSet(ctx, sels, typ.OfType, &pathSegment{path, i}, s, resolver.Index(i), &entryouts[i])
+			}(i)
+		}
+		for i := 0; i < concurrency; i++ {
+			sem <- struct{}{}
+		}
+	} else {
+		for i := 0; i < l; i++ {
+			r.execSelectionSet(ctx, sels, typ.OfType, &pathSegment{path, i}, s, resolver.Index(i), &entryouts[i])
+		}
+	}
+
+	_, listOfNonNull := typ.OfType.(*types.NonNull)
+
+	out.WriteByte('[')
+	for i, entryout := range entryouts {
+		// If the list wraps a non-null type and one of the list elements
+		// resolves to null, then the entire list resolves to null.
+		if listOfNonNull && resolvedToNull(&entryout) {
+			out.Reset()
+			out.WriteString("null")
+			return
+		}
+
+		if i > 0 {
+			out.WriteByte(',')
+		}
+		out.Write(entryout.Bytes())
+	}
+	out.WriteByte(']')
+}
+
+func unwrapNonNull(t types.Type) (types.Type, bool) {
+	if nn, ok := t.(*types.NonNull); ok {
+		return nn.OfType, true
+	}
+	return t, false
+}
+
+type pathSegment struct {
+	parent *pathSegment
+	value  interface{}
+}
+
+func (p *pathSegment) toSlice() []interface{} {
+	if p == nil {
+		return nil
+	}
+	return append(p.parent.toSlice(), p.value)
+}

vendor/github.com/graph-gophers/graphql-go/internal/exec/packer/packer.go

@@ -0,0 +1,390 @@
+package packer
+
+import (
+	"fmt"
+	"math"
+	"reflect"
+	"strings"
+
+	"github.com/graph-gophers/graphql-go/decode"
+	"github.com/graph-gophers/graphql-go/errors"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+type packer interface {
+	Pack(value interface{}) (reflect.Value, error)
+}
+
+type Builder struct {
+	packerMap     map[typePair]*packerMapEntry
+	structPackers []*StructPacker
+}
+
+type typePair struct {
+	graphQLType  types.Type
+	resolverType reflect.Type
+}
+
+type packerMapEntry struct {
+	packer  packer
+	targets []*packer
+}
+
+func NewBuilder() *Builder {
+	return &Builder{
+		packerMap: make(map[typePair]*packerMapEntry),
+	}
+}
+
+func (b *Builder) Finish() error {
+	for _, entry := range b.packerMap {
+		for _, target := range entry.targets {
+			*target = entry.packer
+		}
+	}
+
+	for _, p := range b.structPackers {
+		p.defaultStruct = reflect.New(p.structType).Elem()
+		for _, f := range p.fields {
+			if defaultVal := f.field.Default; defaultVal != nil {
+				v, err := f.fieldPacker.Pack(defaultVal.Deserialize(nil))
+				if err != nil {
+					return err
+				}
+				p.defaultStruct.FieldByIndex(f.fieldIndex).Set(v)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (b *Builder) assignPacker(target *packer, schemaType types.Type, reflectType reflect.Type) error {
+	k := typePair{schemaType, reflectType}
+	ref, ok := b.packerMap[k]
+	if !ok {
+		ref = &packerMapEntry{}
+		b.packerMap[k] = ref
+		var err error
+		ref.packer, err = b.makePacker(schemaType, reflectType)
+		if err != nil {
+			return err
+		}
+	}
+	ref.targets = append(ref.targets, target)
+	return nil
+}
+
+func (b *Builder) makePacker(schemaType types.Type, reflectType reflect.Type) (packer, error) {
+	t, nonNull := unwrapNonNull(schemaType)
+	if !nonNull {
+		if reflectType.Kind() == reflect.Ptr {
+			elemType := reflectType.Elem()
+			addPtr := true
+			if _, ok := t.(*types.InputObject); ok {
+				elemType = reflectType // keep pointer for input objects
+				addPtr = false
+			}
+			elem, err := b.makeNonNullPacker(t, elemType)
+			if err != nil {
+				return nil, err
+			}
+			return &nullPacker{
+				elemPacker: elem,
+				valueType:  reflectType,
+				addPtr:     addPtr,
+			}, nil
+		} else if isNullable(reflectType) {
+			elemType := reflectType
+			addPtr := false
+			elem, err := b.makeNonNullPacker(t, elemType)
+			if err != nil {
+				return nil, err
+			}
+			return &nullPacker{
+				elemPacker: elem,
+				valueType:  reflectType,
+				addPtr:     addPtr,
+			}, nil
+		} else {
+			return nil, fmt.Errorf("%s is not a pointer or a nullable type", reflectType)
+		}
+	}
+
+	return b.makeNonNullPacker(t, reflectType)
+}
+
+func (b *Builder) makeNonNullPacker(schemaType types.Type, reflectType reflect.Type) (packer, error) {
+	if u, ok := reflect.New(reflectType).Interface().(decode.Unmarshaler); ok {
+		if !u.ImplementsGraphQLType(schemaType.String()) {
+			return nil, fmt.Errorf("can not unmarshal %s into %s", schemaType, reflectType)
+		}
+		return &unmarshalerPacker{
+			ValueType: reflectType,
+		}, nil
+	}
+
+	switch t := schemaType.(type) {
+	case *types.ScalarTypeDefinition:
+		return &ValuePacker{
+			ValueType: reflectType,
+		}, nil
+
+	case *types.EnumTypeDefinition:
+		if reflectType.Kind() != reflect.String {
+			return nil, fmt.Errorf("wrong type, expected %s", reflect.String)
+		}
+		return &ValuePacker{
+			ValueType: reflectType,
+		}, nil
+
+	case *types.InputObject:
+		e, err := b.MakeStructPacker(t.Values, reflectType)
+		if err != nil {
+			return nil, err
+		}
+		return e, nil
+
+	case *types.List:
+		if reflectType.Kind() != reflect.Slice {
+			return nil, fmt.Errorf("expected slice, got %s", reflectType)
+		}
+		p := &listPacker{
+			sliceType: reflectType,
+		}
+		if err := b.assignPacker(&p.elem, t.OfType, reflectType.Elem()); err != nil {
+			return nil, err
+		}
+		return p, nil
+
+	case *types.ObjectTypeDefinition, *types.InterfaceTypeDefinition, *types.Union:
+		return nil, fmt.Errorf("type of kind %s can not be used as input", t.Kind())
+
+	default:
+		panic("unreachable")
+	}
+}
+
+func (b *Builder) MakeStructPacker(values []*types.InputValueDefinition, typ reflect.Type) (*StructPacker, error) {
+	structType := typ
+	usePtr := false
+	if typ.Kind() == reflect.Ptr {
+		structType = typ.Elem()
+		usePtr = true
+	}
+	if structType.Kind() != reflect.Struct {
+		return nil, fmt.Errorf("expected struct or pointer to struct, got %s (hint: missing `args struct { ... }` wrapper for field arguments?)", typ)
+	}
+
+	var fields []*structPackerField
+	for _, v := range values {
+		fe := &structPackerField{field: v}
+		fx := func(n string) bool {
+			return strings.EqualFold(stripUnderscore(n), stripUnderscore(v.Name.Name))
+		}
+
+		sf, ok := structType.FieldByNameFunc(fx)
+		if !ok {
+			return nil, fmt.Errorf("%s does not define field %q (hint: missing `args struct { ... }` wrapper for field arguments, or missing field on input struct)", typ, v.Name.Name)
+		}
+		if sf.PkgPath != "" {
+			return nil, fmt.Errorf("field %q must be exported", sf.Name)
+		}
+		fe.fieldIndex = sf.Index
+
+		ft := v.Type
+		if v.Default != nil {
+			ft, _ = unwrapNonNull(ft)
+			ft = &types.NonNull{OfType: ft}
+		}
+
+		if err := b.assignPacker(&fe.fieldPacker, ft, sf.Type); err != nil {
+			return nil, fmt.Errorf("field %q: %s", sf.Name, err)
+		}
+
+		fields = append(fields, fe)
+	}
+
+	p := &StructPacker{
+		structType: structType,
+		usePtr:     usePtr,
+		fields:     fields,
+	}
+	b.structPackers = append(b.structPackers, p)
+	return p, nil
+}
+
+type StructPacker struct {
+	structType    reflect.Type
+	usePtr        bool
+	defaultStruct reflect.Value
+	fields        []*structPackerField
+}
+
+type structPackerField struct {
+	field       *types.InputValueDefinition
+	fieldIndex  []int
+	fieldPacker packer
+}
+
+func (p *StructPacker) Pack(value interface{}) (reflect.Value, error) {
+	if value == nil {
+		return reflect.Value{}, errors.Errorf("got null for non-null")
+	}
+
+	values := value.(map[string]interface{})
+	v := reflect.New(p.structType)
+	v.Elem().Set(p.defaultStruct)
+	for _, f := range p.fields {
+		if value, ok := values[f.field.Name.Name]; ok {
+			packed, err := f.fieldPacker.Pack(value)
+			if err != nil {
+				return reflect.Value{}, err
+			}
+			v.Elem().FieldByIndex(f.fieldIndex).Set(packed)
+		}
+	}
+	if !p.usePtr {
+		return v.Elem(), nil
+	}
+	return v, nil
+}
+
+type listPacker struct {
+	sliceType reflect.Type
+	elem      packer
+}
+
+func (e *listPacker) Pack(value interface{}) (reflect.Value, error) {
+	list, ok := value.([]interface{})
+	if !ok {
+		list = []interface{}{value}
+	}
+
+	v := reflect.MakeSlice(e.sliceType, len(list), len(list))
+	for i := range list {
+		packed, err := e.elem.Pack(list[i])
+		if err != nil {
+			return reflect.Value{}, err
+		}
+		v.Index(i).Set(packed)
+	}
+	return v, nil
+}
+
+type nullPacker struct {
+	elemPacker packer
+	valueType  reflect.Type
+	addPtr     bool
+}
+
+func (p *nullPacker) Pack(value interface{}) (reflect.Value, error) {
+	if value == nil && !isNullable(p.valueType) {
+		return reflect.Zero(p.valueType), nil
+	}
+
+	v, err := p.elemPacker.Pack(value)
+	if err != nil {
+		return reflect.Value{}, err
+	}
+
+	if p.addPtr {
+		ptr := reflect.New(p.valueType.Elem())
+		ptr.Elem().Set(v)
+		return ptr, nil
+	}
+
+	return v, nil
+}
+
+type ValuePacker struct {
+	ValueType reflect.Type
+}
+
+func (p *ValuePacker) Pack(value interface{}) (reflect.Value, error) {
+	if value == nil {
+		return reflect.Value{}, errors.Errorf("got null for non-null")
+	}
+
+	coerced, err := unmarshalInput(p.ValueType, value)
+	if err != nil {
+		return reflect.Value{}, fmt.Errorf("could not unmarshal %#v (%T) into %s: %s", value, value, p.ValueType, err)
+	}
+	return reflect.ValueOf(coerced), nil
+}
+
+type unmarshalerPacker struct {
+	ValueType reflect.Type
+}
+
+func (p *unmarshalerPacker) Pack(value interface{}) (reflect.Value, error) {
+	if value == nil && !isNullable(p.ValueType) {
+		return reflect.Value{}, errors.Errorf("got null for non-null")
+	}
+
+	v := reflect.New(p.ValueType)
+	if err := v.Interface().(decode.Unmarshaler).UnmarshalGraphQL(value); err != nil {
+		return reflect.Value{}, err
+	}
+	return v.Elem(), nil
+}
+
+func unmarshalInput(typ reflect.Type, input interface{}) (interface{}, error) {
+	if reflect.TypeOf(input) == typ {
+		return input, nil
+	}
+
+	switch typ.Kind() {
+	case reflect.Int32:
+		switch input := input.(type) {
+		case int:
+			if input < math.MinInt32 || input > math.MaxInt32 {
+				return nil, fmt.Errorf("not a 32-bit integer")
+			}
+			return int32(input), nil
+		case float64:
+			coerced := int32(input)
+			if input < math.MinInt32 || input > math.MaxInt32 || float64(coerced) != input {
+				return nil, fmt.Errorf("not a 32-bit integer")
+			}
+			return coerced, nil
+		}
+
+	case reflect.Float64:
+		switch input := input.(type) {
+		case int32:
+			return float64(input), nil
+		case int:
+			return float64(input), nil
+		}
+
+	case reflect.String:
+		if reflect.TypeOf(input).ConvertibleTo(typ) {
+			return reflect.ValueOf(input).Convert(typ).Interface(), nil
+		}
+	}
+
+	return nil, fmt.Errorf("incompatible type")
+}
+
+func unwrapNonNull(t types.Type) (types.Type, bool) {
+	if nn, ok := t.(*types.NonNull); ok {
+		return nn.OfType, true
+	}
+	return t, false
+}
+
+func stripUnderscore(s string) string {
+	return strings.Replace(s, "_", "", -1)
+}
+
+// NullUnmarshaller is an unmarshaller that can handle a nil input
+type NullUnmarshaller interface {
+	decode.Unmarshaler
+	Nullable()
+}
+
+func isNullable(t reflect.Type) bool {
+	_, ok := reflect.New(t).Interface().(NullUnmarshaller)
+	return ok
+}

vendor/github.com/graph-gophers/graphql-go/internal/exec/resolvable/meta.go

@@ -0,0 +1,70 @@
+package resolvable
+
+import (
+	"reflect"
+
+	"github.com/graph-gophers/graphql-go/introspection"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+// Meta defines the details of the metadata schema for introspection.
+type Meta struct {
+	FieldSchema   Field
+	FieldType     Field
+	FieldTypename Field
+	Schema        *Object
+	Type          *Object
+}
+
+func newMeta(s *types.Schema) *Meta {
+	var err error
+	b := newBuilder(s)
+
+	metaSchema := s.Types["__Schema"].(*types.ObjectTypeDefinition)
+	so, err := b.makeObjectExec(metaSchema.Name, metaSchema.Fields, nil, false, reflect.TypeOf(&introspection.Schema{}))
+	if err != nil {
+		panic(err)
+	}
+
+	metaType := s.Types["__Type"].(*types.ObjectTypeDefinition)
+	t, err := b.makeObjectExec(metaType.Name, metaType.Fields, nil, false, reflect.TypeOf(&introspection.Type{}))
+	if err != nil {
+		panic(err)
+	}
+
+	if err := b.finish(); err != nil {
+		panic(err)
+	}
+
+	fieldTypename := Field{
+		FieldDefinition: types.FieldDefinition{
+			Name: "__typename",
+			Type: &types.NonNull{OfType: s.Types["String"]},
+		},
+		TraceLabel: "GraphQL field: __typename",
+	}
+
+	fieldSchema := Field{
+		FieldDefinition: types.FieldDefinition{
+			Name: "__schema",
+			Type: s.Types["__Schema"],
+		},
+		TraceLabel: "GraphQL field: __schema",
+	}
+
+	fieldType := Field{
+		FieldDefinition: types.FieldDefinition{
+			Name: "__type",
+			Type: s.Types["__Type"],
+		},
+		TraceLabel: "GraphQL field: __type",
+	}
+
+	return &Meta{
+		FieldSchema:   fieldSchema,
+		FieldTypename: fieldTypename,
+		FieldType:     fieldType,
+		Schema:        so,
+		Type:          t,
+	}
+}

vendor/github.com/graph-gophers/graphql-go/internal/exec/resolvable/resolvable.go

@@ -0,0 +1,453 @@
+package resolvable
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/graph-gophers/graphql-go/decode"
+	"github.com/graph-gophers/graphql-go/internal/exec/packer"
+	"github.com/graph-gophers/graphql-go/types"
+)
+
+type Schema struct {
+	*Meta
+	types.Schema
+	Query        Resolvable
+	Mutation     Resolvable
+	Subscription Resolvable
+	Resolver     reflect.Value
+}
+
+type Resolvable interface {
+	isResolvable()
+}
+
+type Object struct {
+	Name           string
+	Fields         map[string]*Field
+	TypeAssertions map[string]*TypeAssertion
+}
+
+type Field struct {
+	types.FieldDefinition
+	TypeName    string
+	MethodIndex int
+	FieldIndex  []int
+	HasContext  bool
+	HasError    bool
+	ArgsPacker  *packer.StructPacker
+	ValueExec   Resolvable
+	TraceLabel  string
+}
+
+func (f *Field) UseMethodResolver() bool {
+	return len(f.FieldIndex) == 0
+}
+
+type TypeAssertion struct {
+	MethodIndex int
+	TypeExec    Resolvable
+}
+
+type List struct {
+	Elem Resolvable
+}
+
+type Scalar struct{}
+
+func (*Object) isResolvable() {}
+func (*List) isResolvable()   {}
+func (*Scalar) isResolvable() {}
+
+func ApplyResolver(s *types.Schema, resolver interface{}) (*Schema, error) {
+	if resolver == nil {
+		return &Schema{Meta: newMeta(s), Schema: *s}, nil
+	}
+
+	b := newBuilder(s)
+
+	var query, mutation, subscription Resolvable
+
+	if t, ok := s.EntryPoints["query"]; ok {
+		if err := b.assignExec(&query, t, reflect.TypeOf(resolver)); err != nil {
+			return nil, err
+		}
+	}
+
+	if t, ok := s.EntryPoints["mutation"]; ok {
+		if err := b.assignExec(&mutation, t, reflect.TypeOf(resolver)); err != nil {
+			return nil, err
+		}
+	}
+
+	if t, ok := s.EntryPoints["subscription"]; ok {
+		if err := b.assignExec(&subscription, t, reflect.TypeOf(resolver)); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := b.finish(); err != nil {
+		return nil, err
+	}
+
+	return &Schema{
+		Meta:         newMeta(s),
+		Schema:       *s,
+		Resolver:     reflect.ValueOf(resolver),
+		Query:        query,
+		Mutation:     mutation,
+		Subscription: subscription,
+	}, nil
+}
+
+type execBuilder struct {
+	schema        *types.Schema
+	resMap        map[typePair]*resMapEntry
+	packerBuilder *packer.Builder
+}
+
+type typePair struct {
+	graphQLType  types.Type
+	resolverType reflect.Type
+}
+
+type resMapEntry struct {
+	exec    Resolvable
+	targets []*Resolvable
+}
+
+func newBuilder(s *types.Schema) *execBuilder {
+	return &execBuilder{
+		schema:        s,
+		resMap:        make(map[typePair]*resMapEntry),
+		packerBuilder: packer.NewBuilder(),
+	}
+}
+
+func (b *execBuilder) finish() error {
+	for _, entry := range b.resMap {
+		for _, target := range entry.targets {
+			*target = entry.exec
+		}
+	}
+
+	return b.packerBuilder.Finish()
+}
+
+func (b *execBuilder) assignExec(target *Resolvable, t types.Type, resolverType reflect.Type) error {
+	k := typePair{t, resolverType}
+	ref, ok := b.resMap[k]
+	if !ok {
+		ref = &resMapEntry{}
+		b.resMap[k] = ref
+		var err error
+		ref.exec, err = b.makeExec(t, resolverType)
+		if err != nil {
+			return err
+		}
+	}
+	ref.targets = append(ref.targets, target)
+	return nil
+}
+
+func (b *execBuilder) makeExec(t types.Type, resolverType reflect.Type) (Resolvable, error) {
+	var nonNull bool
+	t, nonNull = unwrapNonNull(t)
+
+	switch t := t.(type) {
+	case *types.ObjectTypeDefinition:
+		return b.makeObjectExec(t.Name, t.Fields, nil, nonNull, resolverType)
+
+	case *types.InterfaceTypeDefinition:
+		return b.makeObjectExec(t.Name, t.Fields, t.PossibleTypes, nonNull, resolverType)
+
+	case *types.Union:
+		return b.makeObjectExec(t.Name, nil, t.UnionMemberTypes, nonNull, resolverType)
+	}
+
+	if !nonNull {
+		if resolverType.Kind() != reflect.Ptr {
+			return nil, fmt.Errorf("%s is not a pointer", resolverType)
+		}
+		resolverType = resolverType.Elem()
+	}
+
+	switch t := t.(type) {
+	case *types.ScalarTypeDefinition:
+		return makeScalarExec(t, resolverType)
+
+	case *types.EnumTypeDefinition:
+		return &Scalar{}, nil
+
+	case *types.List:
+		if resolverType.Kind() != reflect.Slice {
+			return nil, fmt.Errorf("%s is not a slice", resolverType)
+		}
+		e := &List{}
+		if err := b.assignExec(&e.Elem, t.OfType, resolverType.Elem()); err != nil {
+			return nil, err
+		}
+		return e, nil
+
+	default:
+		panic("invalid type: " + t.String())
+	}
+}
+
+func makeScalarExec(t *types.ScalarTypeDefinition, resolverType reflect.Type) (Resolvable, error) {
+	implementsType := false
+	switch r := reflect.New(resolverType).Interface().(type) {
+	case *int32:
+		implementsType = t.Name == "Int"
+	case *float64:
+		implementsType = t.Name == "Float"
+	case *string:
+		implementsType = t.Name == "String"
+	case *bool:
+		implementsType = t.Name == "Boolean"
+	case decode.Unmarshaler:
+		implementsType = r.ImplementsGraphQLType(t.Name)
+	}
+
+	if !implementsType {
+		return nil, fmt.Errorf("can not use %s as %s", resolverType, t.Name)
+	}
+	return &Scalar{}, nil
+}
+
+func (b *execBuilder) makeObjectExec(typeName string, fields types.FieldsDefinition, possibleTypes []*types.ObjectTypeDefinition,
+	nonNull bool, resolverType reflect.Type) (*Object, error) {
+	if !nonNull {
+		if resolverType.Kind() != reflect.Ptr && resolverType.Kind() != reflect.Interface {
+			return nil, fmt.Errorf("%s is not a pointer or interface", resolverType)
+		}
+	}
+
+	methodHasReceiver := resolverType.Kind() != reflect.Interface
+
+	Fields := make(map[string]*Field)
+	rt := unwrapPtr(resolverType)
+	fieldsCount := fieldCount(rt, map[string]int{})
+	for _, f := range fields {
+		var fieldIndex []int
+		methodIndex := findMethod(resolverType, f.Name)
+		if b.schema.UseFieldResolvers && methodIndex == -1 {
+			if fieldsCount[strings.ToLower(stripUnderscore(f.Name))] > 1 {
+				return nil, fmt.Errorf("%s does not resolve %q: ambiguous field %q", resolverType, typeName, f.Name)
+			}
+			fieldIndex = findField(rt, f.Name, []int{})
+		}
+		if methodIndex == -1 && len(fieldIndex) == 0 {
+			hint := ""
+			if findMethod(reflect.PtrTo(resolverType), f.Name) != -1 {
+				hint = " (hint: the method exists on the pointer type)"
+			}
+			return nil, fmt.Errorf("%s does not resolve %q: missing method for field %q%s", resolverType, typeName, f.Name, hint)
+		}
+
+		var m reflect.Method
+		var sf reflect.StructField
+		if methodIndex != -1 {
+			m = resolverType.Method(methodIndex)
+		} else {
+			sf = rt.FieldByIndex(fieldIndex)
+		}
+		fe, err := b.makeFieldExec(typeName, f, m, sf, methodIndex, fieldIndex, methodHasReceiver)
+		if err != nil {
+			var resolverName string
+			if methodIndex != -1 {
+				resolverName = m.Name
+			} else {
+				resolverName = sf.Name
+			}
+			return nil, fmt.Errorf("%s\n\tused by (%s).%s", err, resolverType, resolverName)
+		}
+		Fields[f.Name] = fe
+	}
+
+	// Check type assertions when
+	//	1) using method resolvers
+	//	2) Or resolver is not an interface type
+	typeAssertions := make(map[string]*TypeAssertion)
+	if !b.schema.UseFieldResolvers || resolverType.Kind() != reflect.Interface {
+		for _, impl := range possibleTypes {
+			methodIndex := findMethod(resolverType, "To"+impl.Name)
+			if methodIndex == -1 {
+				return nil, fmt.Errorf("%s does not resolve %q: missing method %q to convert to %q", resolverType, typeName, "To"+impl.Name, impl.Name)
+			}
+			if resolverType.Method(methodIndex).Type.NumOut() != 2 {
+				return nil, fmt.Errorf("%s does not resolve %q: method %q should return a value and a bool indicating success", resolverType, typeName, "To"+impl.Name)
+			}
+			a := &TypeAssertion{
+				MethodIndex: methodIndex,
+			}
+			if err := b.assignExec(&a.TypeExec, impl, resolverType.Method(methodIndex).Type.Out(0)); err != nil {
+				return nil, err
+			}
+			typeAssertions[impl.Name] = a
+		}
+	}
+
+	return &Object{
+		Name:           typeName,
+		Fields:         Fields,
+		TypeAssertions: typeAssertions,
+	}, nil
+}
+
+var contextType = reflect.TypeOf((*context.Context)(nil)).Elem()
+var errorType = reflect.TypeOf((*error)(nil)).Elem()
+
+func (b *execBuilder) makeFieldExec(typeName string, f *types.FieldDefinition, m reflect.Method, sf reflect.StructField,
+	methodIndex int, fieldIndex []int, methodHasReceiver bool) (*Field, error) {
+
+	var argsPacker *packer.StructPacker
+	var hasError bool
+	var hasContext bool
+
+	// Validate resolver method only when there is one
+	if methodIndex != -1 {
+		in := make([]reflect.Type, m.Type.NumIn())
+		for i := range in {
+			in[i] = m.Type.In(i)
+		}
+		if methodHasReceiver {
+			in = in[1:] // first parameter is receiver
+		}
+
+		hasContext = len(in) > 0 && in[0] == contextType
+		if hasContext {
+			in = in[1:]
+		}
+
+		if len(f.Arguments) > 0 {
+			if len(in) == 0 {
+				return nil, fmt.Errorf("must have parameter for field arguments")
+			}
+			var err error
+			argsPacker, err = b.packerBuilder.MakeStructPacker(f.Arguments, in[0])
+			if err != nil {
+				return nil, err
+			}
+			in = in[1:]
+		}
+
+		if len(in) > 0 {
+			return nil, fmt.Errorf("too many parameters")
+		}
+
+		maxNumOfReturns := 2
+		if m.Type.NumOut() < maxNumOfReturns-1 {
+			return nil, fmt.Errorf("too few return values")
+		}
+
+		if m.Type.NumOut() > maxNumOfReturns {
+			return nil, fmt.Errorf("too many return values")
+		}
+
+		hasError = m.Type.NumOut() == maxNumOfReturns
+		if hasError {
+			if m.Type.Out(maxNumOfReturns-1) != errorType {
+				return nil, fmt.Errorf(`must have "error" as its last return value`)
+			}
+		}
+	}
+
+	fe := &Field{
+		FieldDefinition: *f,
+		TypeName:        typeName,
+		MethodIndex:     methodIndex,
+		FieldIndex:      fieldIndex,
+		HasContext:      hasContext,
+		ArgsPacker:      argsPacker,
+		HasError:        hasError,
+		TraceLabel:      fmt.Sprintf("GraphQL field: %s.%s", typeName, f.Name),
+	}
+
+	var out reflect.Type
+	if methodIndex != -1 {
+		out = m.Type.Out(0)
+		sub, ok := b.schema.EntryPoints["subscription"]
+		if ok && typeName == sub.TypeName() && out.Kind() == reflect.Chan {
+			out = m.Type.Out(0).Elem()
+		}
+	} else {
+		out = sf.Type
+	}
+	if err := b.assignExec(&fe.ValueExec, f.Type, out); err != nil {
+		return nil, err
+	}
+
+	return fe, nil
+}
+
+func findMethod(t reflect.Type, name string) int {
+	for i := 0; i < t.NumMethod(); i++ {
+		if strings.EqualFold(stripUnderscore(name), stripUnderscore(t.Method(i).Name)) {
+			return i
+		}
+	}
+	return -1
+}
+
+func findField(t reflect.Type, name string, index []int) []int {
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+
+		if field.Type.Kind() == reflect.Struct && field.Anonymous {
+			newIndex := findField(field.Type, name, []int{i})
+			if len(newIndex) > 1 {
+				return append(index, newIndex...)
+			}
+		}
+
+		if strings.EqualFold(stripUnderscore(name), stripUnderscore(field.Name)) {
+			return append(index, i)
+		}
+	}
+
+	return index
+}
+
+// fieldCount helps resolve ambiguity when more than one embedded struct contains fields with the same name.
+func fieldCount(t reflect.Type, count map[string]int) map[string]int {
+	if t.Kind() != reflect.Struct {
+		return nil
+	}
+
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		fieldName := strings.ToLower(stripUnderscore(field.Name))
+
+		if field.Type.Kind() == reflect.Struct && field.Anonymous {
+			count = fieldCount(field.Type, count)
+		} else {
+			if _, ok := count[fieldName]; !ok {
+				count[fieldName] = 0
+			}
+			count[fieldName]++
+		}
+	}
+
+	return count
+}
+
+func unwrapNonNull(t types.Type) (types.Type, bool) {
+	if nn, ok := t.(*types.NonNull); ok {
+		return nn.OfType, true
+	}
+	return t, false
+}
+
+func stripUnderscore(s string) string {
+	return strings.Replace(s, "_", "", -1)
+}
+
+func unwrapPtr(t reflect.Type) reflect.Type {
+	if t.Kind() == reflect.Ptr {
+		return t.Elem()
+	}
+	return t
+}