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Rewrite whatsapp bridge to use whatsmeow

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This commit is contained in:
Wim
2022-01-31 00:13:37 +01:00
parent 17da95b094
commit e7b193788a
3 changed files with 295 additions and 412 deletions
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260
bridge/whatsapp/whatsapp.go
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@@ -1,38 +1,41 @@
package bwhatsapp
import (
"bytes"
"crypto/rand"
"encoding/hex"
"context"
"errors"
"fmt"
"mime"
"os"
"path/filepath"
"strings"
"time"
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
"github.com/Rhymen/go-whatsapp"
"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"
qrOnWhiteTerminal = "QrOnWhiteTerminal"
sessionFile = "SessionFile"
cfgNumber = "Number"
)
// Bwhatsapp Bridge structure keeping all the information needed for relying
type Bwhatsapp struct {
*bridge.Config
session *whatsapp.Session
conn *whatsapp.Conn
startedAt uint64
users map[string]whatsapp.Contact
startedAt time.Time
wc *whatsmeow.Client
contacts map[types.JID]types.ContactInfo
users map[string]types.ContactInfo
userAvatars map[string]string
}
@@ -47,7 +50,7 @@ func New(cfg *bridge.Config) bridge.Bridger {
b := &Bwhatsapp{
Config: cfg,
users: make(map[string]whatsapp.Contact),
users: make(map[string]types.ContactInfo),
userAvatars: make(map[string]string),
}
@@ -56,54 +59,56 @@ func New(cfg *bridge.Config) bridge.Bridger {
// 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..")
conn, err := whatsapp.NewConn(20 * time.Second)
b.wc = whatsmeow.NewClient(device, waLog.Stdout("Client", "INFO", true))
b.wc.AddEventHandler(b.eventHandler)
// No ID stored, new login
qrChan, err := b.wc.GetQRChannel(context.Background())
// This error means that we're already logged in, so ignore it.
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())
}
b.conn = conn
b.conn.AddHandler(b)
b.Log.Debugln("WhatsApp connection successful")
// load existing session in order to keep it between restarts
b.session, err = b.restoreSession()
if err != nil {
b.Log.Warn(err.Error())
}
// login to a new session
if b.session == nil {
if err = b.Login(); err != nil {
return err
for evt := range qrChan {
if evt.Event == "code" {
// Render the QR code here
qrterminal.GenerateHalfBlock(evt.Code, qrterminal.L, os.Stdout)
} else {
b.Log.Infof("QR channel result: %s", evt.Event)
}
}
b.startedAt = uint64(time.Now().Unix())
b.Log.Infoln("WhatsApp connection successful")
_, err = b.conn.Contacts()
b.contacts, err = b.wc.Store.Contacts.GetAllContacts()
if err != nil {
return fmt.Errorf("error on update of contacts: %v", err)
return errors.New("failed to get contacts: " + err.Error())
}
// see https://github.com/Rhymen/go-whatsapp/issues/137#issuecomment-480316013
for len(b.conn.Store.Contacts) == 0 {
b.conn.Contacts() // nolint:errcheck
<-time.After(1 * time.Second)
}
b.startedAt = time.Now()
// map all the users
for id, contact := range b.conn.Store.Contacts {
if !isGroupJid(id) && id != "status@broadcast" {
for id, contact := range b.contacts {
if !isGroupJid(id.String()) && id.String() != "status@broadcast" {
// it is user
b.users[id] = contact
b.users[id.String()] = contact
}
}
@@ -128,38 +133,11 @@ func (b *Bwhatsapp) Connect() error {
return nil
}
// Login to WhatsApp creating a new session. This will require to scan a QR code on your mobile device
func (b *Bwhatsapp) Login() error {
b.Log.Debugln("Logging in..")
invert := b.GetBool(qrOnWhiteTerminal) // false is the default
qrChan := qrFromTerminal(invert)
session, err := b.conn.Login(qrChan)
if err != nil {
b.Log.Warnln("Failed to log in:", err)
return err
}
b.session = &session
b.Log.Infof("Logged into session: %#v", session)
b.Log.Infof("Connection: %#v", b.conn)
err = b.writeSession(session)
if err != nil {
fmt.Fprintf(os.Stderr, "error saving session: %v\n", err)
}
return nil
}
// Disconnect is called while reconnecting to the bridge
// Required implementation of the Bridger interface
func (b *Bwhatsapp) Disconnect() error {
// We could Logout, but that would close the session completely and would require a new QR code scan
// https://github.com/Rhymen/go-whatsapp/blob/c31092027237441cffba1b9cb148eadf7c83c3d2/session.go#L377-L381
b.wc.Disconnect()
return nil
}
@@ -169,16 +147,19 @@ func (b *Bwhatsapp) Disconnect() error {
func (b *Bwhatsapp) JoinChannel(channel config.ChannelInfo) error {
byJid := isGroupJid(channel.Name)
// see https://github.com/Rhymen/go-whatsapp/issues/137#issuecomment-480316013
for len(b.conn.Store.Contacts) == 0 {
b.conn.Contacts() // nolint:errcheck
<-time.After(1 * time.Second)
}
// verify if we are member of the given group
if byJid {
gJID, err := types.ParseJID(channel.Name)
if err != nil {
return err
}
// channel.Name specifies static group jID, not the name
if _, exists := b.conn.Store.Contacts[channel.Name]; !exists {
info, err := b.wc.Store.Contacts.GetContact(gJID)
if err != nil {
return err
}
if !info.Found {
return fmt.Errorf("account doesn't belong to group with jid %s", channel.Name)
}
@@ -187,18 +168,22 @@ func (b *Bwhatsapp) JoinChannel(channel config.ChannelInfo) error {
// channel.Name specifies group name that might change, warn about it
var jids []string
for id, contact := range b.conn.Store.Contacts {
if isGroupJid(id) && contact.Name == channel.Name {
jids = append(jids, id)
allContacts, err := b.wc.Store.Contacts.GetAllContacts()
if err != nil {
return err
}
for id := range allContacts {
if isGroupJid(id.String()) && id.String() == channel.Name {
jids = append(jids, id.String())
}
}
switch len(jids) {
case 0:
// didn't match any group - print out possibilites
for id, contact := range b.conn.Store.Contacts {
if isGroupJid(id) {
b.Log.Infof("%s %s", contact.Jid, contact.Name)
for id, contact := range allContacts {
if isGroupJid(id.String()) {
b.Log.Infof("%s %s", id, contact.FullName)
}
}
@@ -212,68 +197,75 @@ func (b *Bwhatsapp) JoinChannel(channel config.ChannelInfo) error {
// 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
message := whatsapp.DocumentMessage{
Info: whatsapp.MessageInfo{
RemoteJid: msg.Channel,
},
Title: fi.Name,
FileName: fi.Name,
Type: filetype,
Content: bytes.NewReader(*fi.Data),
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)
// create message ID
// TODO follow and act if https://github.com/Rhymen/go-whatsapp/issues/101 implemented
idBytes := make([]byte, 10)
if _, err := rand.Read(idBytes); err != nil {
b.Log.Warn(err.Error())
}
ID := whatsmeow.GenerateMessageID()
_, err = b.wc.SendMessage(groupJID, ID, &message)
message.Info.Id = strings.ToUpper(hex.EncodeToString(idBytes))
_, err := b.conn.Send(message)
return message.Info.Id, err
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)
// Post image message
message := whatsapp.ImageMessage{
Info: whatsapp.MessageInfo{
RemoteJid: msg.Channel,
},
Type: filetype,
Caption: msg.Username + fi.Comment,
Content: bytes.NewReader(*fi.Data),
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)
// create message ID
// TODO follow and act if https://github.com/Rhymen/go-whatsapp/issues/101 implemented
idBytes := make([]byte, 10)
if _, err := rand.Read(idBytes); err != nil {
b.Log.Warn(err.Error())
}
ID := whatsmeow.GenerateMessageID()
_, err = b.wc.SendMessage(groupJID, ID, &message)
message.Info.Id = strings.ToUpper(hex.EncodeToString(idBytes))
_, err := b.conn.Send(message)
return message.Info.Id, err
return ID, err
}
// Send a message from the bridge to WhatsApp
// Required implementation of the Bridger interface
// https://github.com/42wim/matterbridge/blob/2cfd880cdb0df29771bf8f31df8d990ab897889d/bridge/bridge.go#L11-L16
func (b *Bwhatsapp) Send(msg config.Message) (string, error) {
groupJID, _ := types.ParseJID(msg.Channel)
b.Log.Debugf("=> Receiving %#v", msg)
// Delete message
@@ -284,7 +276,7 @@ func (b *Bwhatsapp) Send(msg config.Message) (string, error) {
return "", nil
}
_, err := b.conn.RevokeMessage(msg.Channel, msg.ID, true)
_, err := b.wc.RevokeMessage(groupJID, msg.ID)
return "", err
}
@@ -317,20 +309,18 @@ func (b *Bwhatsapp) Send(msg config.Message) (string, error) {
}
}
// Post text message
message := whatsapp.TextMessage{
Info: whatsapp.MessageInfo{
RemoteJid: msg.Channel, // which equals to group id
},
Text: msg.Username + msg.Text,
var message proto.Message
text := msg.Username + msg.Text
message.ExtendedTextMessage = &proto.ExtendedTextMessage{
Text: &text,
}
b.Log.Debugf("=> Sending %#v", msg)
return b.conn.Send(message)
}
ID := whatsmeow.GenerateMessageID()
_, err := b.wc.SendMessage(groupJID, ID, &message)
// TODO do we want that? to allow login with QR code from a bridged channel? https://github.com/tulir/mautrix-whatsapp/blob/513eb18e2d59bada0dd515ee1abaaf38a3bfe3d5/commands.go#L76
//func (b *Bwhatsapp) Command(cmd string) string {
// return ""
//}
return ID, err
}