mirror of
https://github.com/42wim/matterbridge.git
synced 2024-11-22 18:52:02 -08:00
664 lines
18 KiB
Go
664 lines
18 KiB
Go
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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package model
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import (
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"encoding/json"
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"errors"
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"io"
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"net/http"
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"regexp"
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"sort"
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"strings"
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"sync"
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"unicode/utf8"
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"github.com/mattermost/mattermost-server/v5/utils/markdown"
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)
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const (
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POST_SYSTEM_MESSAGE_PREFIX = "system_"
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POST_DEFAULT = ""
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POST_SLACK_ATTACHMENT = "slack_attachment"
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POST_SYSTEM_GENERIC = "system_generic"
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POST_JOIN_LEAVE = "system_join_leave" // Deprecated, use POST_JOIN_CHANNEL or POST_LEAVE_CHANNEL instead
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POST_JOIN_CHANNEL = "system_join_channel"
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POST_GUEST_JOIN_CHANNEL = "system_guest_join_channel"
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POST_LEAVE_CHANNEL = "system_leave_channel"
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POST_JOIN_TEAM = "system_join_team"
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POST_LEAVE_TEAM = "system_leave_team"
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POST_AUTO_RESPONDER = "system_auto_responder"
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POST_ADD_REMOVE = "system_add_remove" // Deprecated, use POST_ADD_TO_CHANNEL or POST_REMOVE_FROM_CHANNEL instead
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POST_ADD_TO_CHANNEL = "system_add_to_channel"
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POST_ADD_GUEST_TO_CHANNEL = "system_add_guest_to_chan"
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POST_REMOVE_FROM_CHANNEL = "system_remove_from_channel"
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POST_MOVE_CHANNEL = "system_move_channel"
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POST_ADD_TO_TEAM = "system_add_to_team"
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POST_REMOVE_FROM_TEAM = "system_remove_from_team"
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POST_HEADER_CHANGE = "system_header_change"
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POST_DISPLAYNAME_CHANGE = "system_displayname_change"
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POST_CONVERT_CHANNEL = "system_convert_channel"
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POST_PURPOSE_CHANGE = "system_purpose_change"
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POST_CHANNEL_DELETED = "system_channel_deleted"
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POST_CHANNEL_RESTORED = "system_channel_restored"
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POST_EPHEMERAL = "system_ephemeral"
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POST_CHANGE_CHANNEL_PRIVACY = "system_change_chan_privacy"
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POST_ADD_BOT_TEAMS_CHANNELS = "add_bot_teams_channels"
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POST_FILEIDS_MAX_RUNES = 150
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POST_FILENAMES_MAX_RUNES = 4000
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POST_HASHTAGS_MAX_RUNES = 1000
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POST_MESSAGE_MAX_RUNES_V1 = 4000
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POST_MESSAGE_MAX_BYTES_V2 = 65535 // Maximum size of a TEXT column in MySQL
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POST_MESSAGE_MAX_RUNES_V2 = POST_MESSAGE_MAX_BYTES_V2 / 4 // Assume a worst-case representation
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POST_PROPS_MAX_RUNES = 8000
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POST_PROPS_MAX_USER_RUNES = POST_PROPS_MAX_RUNES - 400 // Leave some room for system / pre-save modifications
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POST_CUSTOM_TYPE_PREFIX = "custom_"
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POST_ME = "me"
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PROPS_ADD_CHANNEL_MEMBER = "add_channel_member"
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POST_PROPS_ADDED_USER_ID = "addedUserId"
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POST_PROPS_DELETE_BY = "deleteBy"
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POST_PROPS_OVERRIDE_ICON_URL = "override_icon_url"
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POST_PROPS_OVERRIDE_ICON_EMOJI = "override_icon_emoji"
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POST_PROPS_MENTION_HIGHLIGHT_DISABLED = "mentionHighlightDisabled"
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POST_PROPS_GROUP_HIGHLIGHT_DISABLED = "disable_group_highlight"
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)
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var AT_MENTION_PATTEN = regexp.MustCompile(`\B@`)
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type Post struct {
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Id string `json:"id"`
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CreateAt int64 `json:"create_at"`
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UpdateAt int64 `json:"update_at"`
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EditAt int64 `json:"edit_at"`
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DeleteAt int64 `json:"delete_at"`
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IsPinned bool `json:"is_pinned"`
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UserId string `json:"user_id"`
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ChannelId string `json:"channel_id"`
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RootId string `json:"root_id"`
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ParentId string `json:"parent_id"`
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OriginalId string `json:"original_id"`
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Message string `json:"message"`
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// MessageSource will contain the message as submitted by the user if Message has been modified
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// by Mattermost for presentation (e.g if an image proxy is being used). It should be used to
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// populate edit boxes if present.
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MessageSource string `json:"message_source,omitempty" db:"-"`
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Type string `json:"type"`
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propsMu sync.RWMutex `db:"-"` // Unexported mutex used to guard Post.Props.
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Props StringInterface `json:"props"` // Deprecated: use GetProps()
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Hashtags string `json:"hashtags"`
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Filenames StringArray `json:"filenames,omitempty"` // Deprecated, do not use this field any more
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FileIds StringArray `json:"file_ids,omitempty"`
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PendingPostId string `json:"pending_post_id" db:"-"`
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HasReactions bool `json:"has_reactions,omitempty"`
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// Transient data populated before sending a post to the client
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ReplyCount int64 `json:"reply_count" db:"-"`
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Metadata *PostMetadata `json:"metadata,omitempty" db:"-"`
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}
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type PostEphemeral struct {
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UserID string `json:"user_id"`
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Post *Post `json:"post"`
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}
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type PostPatch struct {
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IsPinned *bool `json:"is_pinned"`
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Message *string `json:"message"`
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Props *StringInterface `json:"props"`
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FileIds *StringArray `json:"file_ids"`
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HasReactions *bool `json:"has_reactions"`
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}
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type SearchParameter struct {
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Terms *string `json:"terms"`
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IsOrSearch *bool `json:"is_or_search"`
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TimeZoneOffset *int `json:"time_zone_offset"`
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Page *int `json:"page"`
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PerPage *int `json:"per_page"`
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IncludeDeletedChannels *bool `json:"include_deleted_channels"`
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}
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type AnalyticsPostCountsOptions struct {
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TeamId string
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BotsOnly bool
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YesterdayOnly bool
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}
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func (o *PostPatch) WithRewrittenImageURLs(f func(string) string) *PostPatch {
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copy := *o
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if copy.Message != nil {
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*copy.Message = RewriteImageURLs(*o.Message, f)
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}
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return ©
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}
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type PostForExport struct {
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Post
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TeamName string
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ChannelName string
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Username string
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ReplyCount int
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}
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type DirectPostForExport struct {
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Post
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User string
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ChannelMembers *[]string
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}
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type ReplyForExport struct {
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Post
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Username string
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}
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type PostForIndexing struct {
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Post
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TeamId string `json:"team_id"`
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ParentCreateAt *int64 `json:"parent_create_at"`
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}
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// ShallowCopy is an utility function to shallow copy a Post to the given
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// destination without touching the internal RWMutex.
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func (o *Post) ShallowCopy(dst *Post) error {
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if dst == nil {
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return errors.New("dst cannot be nil")
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}
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o.propsMu.RLock()
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defer o.propsMu.RUnlock()
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dst.propsMu.Lock()
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defer dst.propsMu.Unlock()
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dst.Id = o.Id
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dst.CreateAt = o.CreateAt
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dst.UpdateAt = o.UpdateAt
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dst.EditAt = o.EditAt
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dst.DeleteAt = o.DeleteAt
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dst.IsPinned = o.IsPinned
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dst.UserId = o.UserId
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dst.ChannelId = o.ChannelId
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dst.RootId = o.RootId
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dst.ParentId = o.ParentId
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dst.OriginalId = o.OriginalId
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dst.Message = o.Message
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dst.MessageSource = o.MessageSource
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dst.Type = o.Type
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dst.Props = o.Props
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dst.Hashtags = o.Hashtags
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dst.Filenames = o.Filenames
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dst.FileIds = o.FileIds
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dst.PendingPostId = o.PendingPostId
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dst.HasReactions = o.HasReactions
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dst.ReplyCount = o.ReplyCount
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dst.Metadata = o.Metadata
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return nil
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}
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// Clone shallowly copies the post and returns the copy.
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func (o *Post) Clone() *Post {
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copy := &Post{}
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o.ShallowCopy(copy)
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return copy
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}
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func (o *Post) ToJson() string {
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copy := o.Clone()
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copy.StripActionIntegrations()
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b, _ := json.Marshal(copy)
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return string(b)
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}
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func (o *Post) ToUnsanitizedJson() string {
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b, _ := json.Marshal(o)
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return string(b)
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}
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type GetPostsSinceOptions struct {
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ChannelId string
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Time int64
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SkipFetchThreads bool
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}
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type GetPostsOptions struct {
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ChannelId string
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PostId string
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Page int
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PerPage int
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SkipFetchThreads bool
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}
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func PostFromJson(data io.Reader) *Post {
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var o *Post
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json.NewDecoder(data).Decode(&o)
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return o
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}
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func (o *Post) Etag() string {
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return Etag(o.Id, o.UpdateAt)
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}
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func (o *Post) IsValid(maxPostSize int) *AppError {
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if !IsValidId(o.Id) {
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return NewAppError("Post.IsValid", "model.post.is_valid.id.app_error", nil, "", http.StatusBadRequest)
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}
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if o.CreateAt == 0 {
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return NewAppError("Post.IsValid", "model.post.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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if o.UpdateAt == 0 {
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return NewAppError("Post.IsValid", "model.post.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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if !IsValidId(o.UserId) {
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return NewAppError("Post.IsValid", "model.post.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
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}
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if !IsValidId(o.ChannelId) {
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return NewAppError("Post.IsValid", "model.post.is_valid.channel_id.app_error", nil, "", http.StatusBadRequest)
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}
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if !(IsValidId(o.RootId) || len(o.RootId) == 0) {
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return NewAppError("Post.IsValid", "model.post.is_valid.root_id.app_error", nil, "", http.StatusBadRequest)
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}
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if !(IsValidId(o.ParentId) || len(o.ParentId) == 0) {
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return NewAppError("Post.IsValid", "model.post.is_valid.parent_id.app_error", nil, "", http.StatusBadRequest)
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}
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if len(o.ParentId) == 26 && len(o.RootId) == 0 {
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return NewAppError("Post.IsValid", "model.post.is_valid.root_parent.app_error", nil, "", http.StatusBadRequest)
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}
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if !(len(o.OriginalId) == 26 || len(o.OriginalId) == 0) {
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return NewAppError("Post.IsValid", "model.post.is_valid.original_id.app_error", nil, "", http.StatusBadRequest)
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}
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if utf8.RuneCountInString(o.Message) > maxPostSize {
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return NewAppError("Post.IsValid", "model.post.is_valid.msg.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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if utf8.RuneCountInString(o.Hashtags) > POST_HASHTAGS_MAX_RUNES {
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return NewAppError("Post.IsValid", "model.post.is_valid.hashtags.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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switch o.Type {
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case
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POST_DEFAULT,
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POST_SYSTEM_GENERIC,
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POST_JOIN_LEAVE,
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POST_AUTO_RESPONDER,
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POST_ADD_REMOVE,
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POST_JOIN_CHANNEL,
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POST_GUEST_JOIN_CHANNEL,
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POST_LEAVE_CHANNEL,
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POST_JOIN_TEAM,
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POST_LEAVE_TEAM,
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POST_ADD_TO_CHANNEL,
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POST_ADD_GUEST_TO_CHANNEL,
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POST_REMOVE_FROM_CHANNEL,
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POST_MOVE_CHANNEL,
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POST_ADD_TO_TEAM,
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POST_REMOVE_FROM_TEAM,
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POST_SLACK_ATTACHMENT,
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POST_HEADER_CHANGE,
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POST_PURPOSE_CHANGE,
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POST_DISPLAYNAME_CHANGE,
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POST_CONVERT_CHANNEL,
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POST_CHANNEL_DELETED,
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POST_CHANNEL_RESTORED,
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POST_CHANGE_CHANNEL_PRIVACY,
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POST_ME,
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POST_ADD_BOT_TEAMS_CHANNELS:
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default:
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if !strings.HasPrefix(o.Type, POST_CUSTOM_TYPE_PREFIX) {
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return NewAppError("Post.IsValid", "model.post.is_valid.type.app_error", nil, "id="+o.Type, http.StatusBadRequest)
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}
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}
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if utf8.RuneCountInString(ArrayToJson(o.Filenames)) > POST_FILENAMES_MAX_RUNES {
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return NewAppError("Post.IsValid", "model.post.is_valid.filenames.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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if utf8.RuneCountInString(ArrayToJson(o.FileIds)) > POST_FILEIDS_MAX_RUNES {
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return NewAppError("Post.IsValid", "model.post.is_valid.file_ids.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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if utf8.RuneCountInString(StringInterfaceToJson(o.GetProps())) > POST_PROPS_MAX_RUNES {
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return NewAppError("Post.IsValid", "model.post.is_valid.props.app_error", nil, "id="+o.Id, http.StatusBadRequest)
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}
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return nil
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}
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func (o *Post) SanitizeProps() {
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membersToSanitize := []string{
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PROPS_ADD_CHANNEL_MEMBER,
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}
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for _, member := range membersToSanitize {
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if _, ok := o.GetProps()[member]; ok {
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o.DelProp(member)
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}
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}
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}
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func (o *Post) PreSave() {
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if o.Id == "" {
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o.Id = NewId()
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}
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o.OriginalId = ""
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if o.CreateAt == 0 {
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o.CreateAt = GetMillis()
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}
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o.UpdateAt = o.CreateAt
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o.PreCommit()
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}
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func (o *Post) PreCommit() {
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if o.GetProps() == nil {
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o.SetProps(make(map[string]interface{}))
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}
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if o.Filenames == nil {
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o.Filenames = []string{}
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}
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if o.FileIds == nil {
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o.FileIds = []string{}
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}
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o.GenerateActionIds()
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// There's a rare bug where the client sends up duplicate FileIds so protect against that
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o.FileIds = RemoveDuplicateStrings(o.FileIds)
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}
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func (o *Post) MakeNonNil() {
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if o.GetProps() == nil {
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o.SetProps(make(map[string]interface{}))
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}
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}
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func (o *Post) DelProp(key string) {
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o.propsMu.Lock()
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defer o.propsMu.Unlock()
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propsCopy := make(map[string]interface{}, len(o.Props)-1)
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for k, v := range o.Props {
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propsCopy[k] = v
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}
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delete(propsCopy, key)
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o.Props = propsCopy
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}
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func (o *Post) AddProp(key string, value interface{}) {
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o.propsMu.Lock()
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defer o.propsMu.Unlock()
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propsCopy := make(map[string]interface{}, len(o.Props)+1)
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for k, v := range o.Props {
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propsCopy[k] = v
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}
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propsCopy[key] = value
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o.Props = propsCopy
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}
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func (o *Post) GetProps() StringInterface {
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o.propsMu.RLock()
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defer o.propsMu.RUnlock()
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return o.Props
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}
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func (o *Post) SetProps(props StringInterface) {
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o.propsMu.Lock()
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defer o.propsMu.Unlock()
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o.Props = props
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}
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func (o *Post) GetProp(key string) interface{} {
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o.propsMu.RLock()
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defer o.propsMu.RUnlock()
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return o.Props[key]
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}
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func (o *Post) IsSystemMessage() bool {
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return len(o.Type) >= len(POST_SYSTEM_MESSAGE_PREFIX) && o.Type[:len(POST_SYSTEM_MESSAGE_PREFIX)] == POST_SYSTEM_MESSAGE_PREFIX
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}
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func (o *Post) IsJoinLeaveMessage() bool {
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return o.Type == POST_JOIN_LEAVE ||
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o.Type == POST_ADD_REMOVE ||
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o.Type == POST_JOIN_CHANNEL ||
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o.Type == POST_LEAVE_CHANNEL ||
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o.Type == POST_JOIN_TEAM ||
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o.Type == POST_LEAVE_TEAM ||
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o.Type == POST_ADD_TO_CHANNEL ||
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o.Type == POST_REMOVE_FROM_CHANNEL ||
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o.Type == POST_ADD_TO_TEAM ||
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o.Type == POST_REMOVE_FROM_TEAM
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}
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func (o *Post) Patch(patch *PostPatch) {
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if patch.IsPinned != nil {
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o.IsPinned = *patch.IsPinned
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}
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if patch.Message != nil {
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o.Message = *patch.Message
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}
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if patch.Props != nil {
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newProps := *patch.Props
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o.SetProps(newProps)
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}
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if patch.FileIds != nil {
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o.FileIds = *patch.FileIds
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}
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if patch.HasReactions != nil {
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o.HasReactions = *patch.HasReactions
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}
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}
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func (o *PostPatch) ToJson() string {
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b, err := json.Marshal(o)
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if err != nil {
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return ""
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}
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return string(b)
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}
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|
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func PostPatchFromJson(data io.Reader) *PostPatch {
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decoder := json.NewDecoder(data)
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var post PostPatch
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err := decoder.Decode(&post)
|
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if err != nil {
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return nil
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}
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|
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return &post
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}
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func (o *SearchParameter) SearchParameterToJson() string {
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b, err := json.Marshal(o)
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if err != nil {
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return ""
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}
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return string(b)
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}
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|
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func SearchParameterFromJson(data io.Reader) *SearchParameter {
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decoder := json.NewDecoder(data)
|
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var searchParam SearchParameter
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err := decoder.Decode(&searchParam)
|
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if err != nil {
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|
return nil
|
|
}
|
|
|
|
return &searchParam
|
|
}
|
|
|
|
func (o *Post) ChannelMentions() []string {
|
|
return ChannelMentions(o.Message)
|
|
}
|
|
|
|
// DisableMentionHighlights disables a posts mention highlighting and returns the first channel mention that was present in the message.
|
|
func (o *Post) DisableMentionHighlights() string {
|
|
mention, hasMentions := findAtChannelMention(o.Message)
|
|
if hasMentions {
|
|
o.AddProp(POST_PROPS_MENTION_HIGHLIGHT_DISABLED, true)
|
|
}
|
|
return mention
|
|
}
|
|
|
|
// DisableMentionHighlights disables mention highlighting for a post patch if required.
|
|
func (o *PostPatch) DisableMentionHighlights() {
|
|
if _, hasMentions := findAtChannelMention(*o.Message); hasMentions {
|
|
if o.Props == nil {
|
|
o.Props = &StringInterface{}
|
|
}
|
|
(*o.Props)[POST_PROPS_MENTION_HIGHLIGHT_DISABLED] = true
|
|
}
|
|
}
|
|
|
|
func findAtChannelMention(message string) (mention string, found bool) {
|
|
re := regexp.MustCompile(`(?i)\B@(channel|all|here)\b`)
|
|
matched := re.FindStringSubmatch(message)
|
|
if found = (len(matched) > 0); found {
|
|
mention = strings.ToLower(matched[0])
|
|
}
|
|
return
|
|
}
|
|
|
|
func (o *Post) Attachments() []*SlackAttachment {
|
|
if attachments, ok := o.GetProp("attachments").([]*SlackAttachment); ok {
|
|
return attachments
|
|
}
|
|
var ret []*SlackAttachment
|
|
if attachments, ok := o.GetProp("attachments").([]interface{}); ok {
|
|
for _, attachment := range attachments {
|
|
if enc, err := json.Marshal(attachment); err == nil {
|
|
var decoded SlackAttachment
|
|
if json.Unmarshal(enc, &decoded) == nil {
|
|
ret = append(ret, &decoded)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (o *Post) AttachmentsEqual(input *Post) bool {
|
|
attachments := o.Attachments()
|
|
inputAttachments := input.Attachments()
|
|
|
|
if len(attachments) != len(inputAttachments) {
|
|
return false
|
|
}
|
|
|
|
for i := range attachments {
|
|
if !attachments[i].Equals(inputAttachments[i]) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
var markdownDestinationEscaper = strings.NewReplacer(
|
|
`\`, `\\`,
|
|
`<`, `\<`,
|
|
`>`, `\>`,
|
|
`(`, `\(`,
|
|
`)`, `\)`,
|
|
)
|
|
|
|
// WithRewrittenImageURLs returns a new shallow copy of the post where the message has been
|
|
// rewritten via RewriteImageURLs.
|
|
func (o *Post) WithRewrittenImageURLs(f func(string) string) *Post {
|
|
copy := o.Clone()
|
|
copy.Message = RewriteImageURLs(o.Message, f)
|
|
if copy.MessageSource == "" && copy.Message != o.Message {
|
|
copy.MessageSource = o.Message
|
|
}
|
|
return copy
|
|
}
|
|
|
|
func (o *PostEphemeral) ToUnsanitizedJson() string {
|
|
b, _ := json.Marshal(o)
|
|
return string(b)
|
|
}
|
|
|
|
// RewriteImageURLs takes a message and returns a copy that has all of the image URLs replaced
|
|
// according to the function f. For each image URL, f will be invoked, and the resulting markdown
|
|
// will contain the URL returned by that invocation instead.
|
|
//
|
|
// Image URLs are destination URLs used in inline images or reference definitions that are used
|
|
// anywhere in the input markdown as an image.
|
|
func RewriteImageURLs(message string, f func(string) string) string {
|
|
if !strings.Contains(message, "![") {
|
|
return message
|
|
}
|
|
|
|
var ranges []markdown.Range
|
|
|
|
markdown.Inspect(message, func(blockOrInline interface{}) bool {
|
|
switch v := blockOrInline.(type) {
|
|
case *markdown.ReferenceImage:
|
|
ranges = append(ranges, v.ReferenceDefinition.RawDestination)
|
|
case *markdown.InlineImage:
|
|
ranges = append(ranges, v.RawDestination)
|
|
default:
|
|
return true
|
|
}
|
|
return true
|
|
})
|
|
|
|
if ranges == nil {
|
|
return message
|
|
}
|
|
|
|
sort.Slice(ranges, func(i, j int) bool {
|
|
return ranges[i].Position < ranges[j].Position
|
|
})
|
|
|
|
copyRanges := make([]markdown.Range, 0, len(ranges))
|
|
urls := make([]string, 0, len(ranges))
|
|
resultLength := len(message)
|
|
|
|
start := 0
|
|
for i, r := range ranges {
|
|
switch {
|
|
case i == 0:
|
|
case r.Position != ranges[i-1].Position:
|
|
start = ranges[i-1].End
|
|
default:
|
|
continue
|
|
}
|
|
original := message[r.Position:r.End]
|
|
replacement := markdownDestinationEscaper.Replace(f(markdown.Unescape(original)))
|
|
resultLength += len(replacement) - len(original)
|
|
copyRanges = append(copyRanges, markdown.Range{Position: start, End: r.Position})
|
|
urls = append(urls, replacement)
|
|
}
|
|
|
|
result := make([]byte, resultLength)
|
|
|
|
offset := 0
|
|
for i, r := range copyRanges {
|
|
offset += copy(result[offset:], message[r.Position:r.End])
|
|
offset += copy(result[offset:], urls[i])
|
|
}
|
|
copy(result[offset:], message[ranges[len(ranges)-1].End:])
|
|
|
|
return string(result)
|
|
}
|