forked from jshiffer/matterbridge
726 lines
20 KiB
Go
726 lines
20 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/v6/shared/markdown"
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)
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const (
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PostSystemMessagePrefix = "system_"
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PostTypeDefault = ""
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PostTypeSlackAttachment = "slack_attachment"
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PostTypeSystemGeneric = "system_generic"
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PostTypeJoinLeave = "system_join_leave" // Deprecated, use PostJoinChannel or PostLeaveChannel instead
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PostTypeJoinChannel = "system_join_channel"
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PostTypeGuestJoinChannel = "system_guest_join_channel"
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PostTypeLeaveChannel = "system_leave_channel"
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PostTypeJoinTeam = "system_join_team"
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PostTypeLeaveTeam = "system_leave_team"
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PostTypeAutoResponder = "system_auto_responder"
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PostTypeAddRemove = "system_add_remove" // Deprecated, use PostAddToChannel or PostRemoveFromChannel instead
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PostTypeAddToChannel = "system_add_to_channel"
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PostTypeAddGuestToChannel = "system_add_guest_to_chan"
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PostTypeRemoveFromChannel = "system_remove_from_channel"
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PostTypeMoveChannel = "system_move_channel"
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PostTypeAddToTeam = "system_add_to_team"
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PostTypeRemoveFromTeam = "system_remove_from_team"
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PostTypeHeaderChange = "system_header_change"
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PostTypeDisplaynameChange = "system_displayname_change"
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PostTypeConvertChannel = "system_convert_channel"
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PostTypePurposeChange = "system_purpose_change"
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PostTypeChannelDeleted = "system_channel_deleted"
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PostTypeChannelRestored = "system_channel_restored"
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PostTypeEphemeral = "system_ephemeral"
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PostTypeChangeChannelPrivacy = "system_change_chan_privacy"
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PostTypeAddBotTeamsChannels = "add_bot_teams_channels"
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PostTypeSystemWarnMetricStatus = "warn_metric_status"
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PostTypeMe = "me"
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PostCustomTypePrefix = "custom_"
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PostFileidsMaxRunes = 300
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PostFilenamesMaxRunes = 4000
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PostHashtagsMaxRunes = 1000
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PostMessageMaxRunesV1 = 4000
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PostMessageMaxBytesV2 = 65535 // Maximum size of a TEXT column in MySQL
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PostMessageMaxRunesV2 = PostMessageMaxBytesV2 / 4 // Assume a worst-case representation
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PostPropsMaxRunes = 800000
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PostPropsMaxUserRunes = PostPropsMaxRunes - 40000 // Leave some room for system / pre-save modifications
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PropsAddChannelMember = "add_channel_member"
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PostPropsAddedUserId = "addedUserId"
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PostPropsDeleteBy = "deleteBy"
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PostPropsOverrideIconURL = "override_icon_url"
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PostPropsOverrideIconEmoji = "override_icon_emoji"
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PostPropsMentionHighlightDisabled = "mentionHighlightDisabled"
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PostPropsGroupHighlightDisabled = "disable_group_highlight"
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PostPropsPreviewedPost = "previewed_post"
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)
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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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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"`
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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:"-"` // 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"`
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HasReactions bool `json:"has_reactions,omitempty"`
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RemoteId *string `json:"remote_id,omitempty"`
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// Transient data populated before sending a post to the client
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ReplyCount int64 `json:"reply_count"`
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LastReplyAt int64 `json:"last_reply_at"`
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Participants []*User `json:"participants"`
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IsFollowing *bool `json:"is_following,omitempty"` // for root posts in collapsed thread mode indicates if the current user is following this thread
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Metadata *PostMetadata `json:"metadata,omitempty"`
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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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type FileForIndexing struct {
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FileInfo
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ChannelId string `json:"channel_id"`
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Content string `json:"content"`
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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.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.Participants = o.Participants
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dst.LastReplyAt = o.LastReplyAt
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dst.Metadata = o.Metadata
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if o.IsFollowing != nil {
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dst.IsFollowing = NewBool(*o.IsFollowing)
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}
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dst.RemoteId = o.RemoteId
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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, error) {
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copy := o.Clone()
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copy.StripActionIntegrations()
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b, err := json.Marshal(copy)
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return string(b), err
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}
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func (o *Post) EncodeJSON(w io.Writer) error {
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o.StripActionIntegrations()
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return json.NewEncoder(w).Encode(o)
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}
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type GetPostsSinceOptions struct {
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UserId string
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ChannelId string
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Time int64
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SkipFetchThreads bool
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CollapsedThreads bool
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CollapsedThreadsExtended bool
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SortAscending bool
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}
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type GetPostsSinceForSyncCursor struct {
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LastPostUpdateAt int64
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LastPostId string
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}
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type GetPostsSinceForSyncOptions struct {
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ChannelId string
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ExcludeRemoteId string
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IncludeDeleted bool
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}
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type GetPostsOptions struct {
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UserId string
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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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CollapsedThreads bool
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CollapsedThreadsExtended bool
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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) || o.RootId == "") {
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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 !(len(o.OriginalId) == 26 || o.OriginalId == "") {
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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) > PostHashtagsMaxRunes {
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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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PostTypeDefault,
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PostTypeSystemGeneric,
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PostTypeJoinLeave,
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PostTypeAutoResponder,
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PostTypeAddRemove,
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PostTypeJoinChannel,
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PostTypeGuestJoinChannel,
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PostTypeLeaveChannel,
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PostTypeJoinTeam,
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PostTypeLeaveTeam,
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PostTypeAddToChannel,
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PostTypeAddGuestToChannel,
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PostTypeRemoveFromChannel,
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PostTypeMoveChannel,
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PostTypeAddToTeam,
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PostTypeRemoveFromTeam,
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PostTypeSlackAttachment,
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PostTypeHeaderChange,
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PostTypePurposeChange,
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PostTypeDisplaynameChange,
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PostTypeConvertChannel,
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PostTypeChannelDeleted,
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PostTypeChannelRestored,
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PostTypeChangeChannelPrivacy,
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PostTypeAddBotTeamsChannels,
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PostTypeSystemWarnMetricStatus,
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PostTypeMe:
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default:
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if !strings.HasPrefix(o.Type, PostCustomTypePrefix) {
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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)) > PostFilenamesMaxRunes {
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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)) > PostFileidsMaxRunes {
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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())) > PostPropsMaxRunes {
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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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if o == nil {
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return
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}
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membersToSanitize := []string{
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PropsAddChannelMember,
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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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for _, p := range o.Participants {
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p.Sanitize(map[string]bool{})
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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(PostSystemMessagePrefix) && o.Type[:len(PostSystemMessagePrefix)] == PostSystemMessagePrefix
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}
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// IsRemote returns true if the post originated on a remote cluster.
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func (o *Post) IsRemote() bool {
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return o.RemoteId != nil && *o.RemoteId != ""
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}
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// GetRemoteID safely returns the remoteID or empty string if not remote.
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func (o *Post) GetRemoteID() string {
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if o.RemoteId != nil {
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return *o.RemoteId
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}
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return ""
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}
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func (o *Post) IsJoinLeaveMessage() bool {
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return o.Type == PostTypeJoinLeave ||
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o.Type == PostTypeAddRemove ||
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o.Type == PostTypeJoinChannel ||
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o.Type == PostTypeLeaveChannel ||
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o.Type == PostTypeJoinTeam ||
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o.Type == PostTypeLeaveTeam ||
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o.Type == PostTypeAddToChannel ||
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o.Type == PostTypeRemoveFromChannel ||
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o.Type == PostTypeAddToTeam ||
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o.Type == PostTypeRemoveFromTeam
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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 *Post) ChannelMentions() []string {
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return ChannelMentions(o.Message)
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}
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// DisableMentionHighlights disables a posts mention highlighting and returns the first channel mention that was present in the message.
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func (o *Post) DisableMentionHighlights() string {
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mention, hasMentions := findAtChannelMention(o.Message)
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if hasMentions {
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o.AddProp(PostPropsMentionHighlightDisabled, true)
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}
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return mention
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}
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// DisableMentionHighlights disables mention highlighting for a post patch if required.
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func (o *PostPatch) DisableMentionHighlights() {
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if o.Message == nil {
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return
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}
|
|
if _, hasMentions := findAtChannelMention(*o.Message); hasMentions {
|
|
if o.Props == nil {
|
|
o.Props = &StringInterface{}
|
|
}
|
|
(*o.Props)[PostPropsMentionHighlightDisabled] = 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 {
|
|
// Ignoring nil actions
|
|
i := 0
|
|
for _, action := range decoded.Actions {
|
|
if action != nil {
|
|
decoded.Actions[i] = action
|
|
i++
|
|
}
|
|
}
|
|
decoded.Actions = decoded.Actions[:i]
|
|
|
|
// Ignoring nil fields
|
|
i = 0
|
|
for _, field := range decoded.Fields {
|
|
if field != nil {
|
|
decoded.Fields[i] = field
|
|
i++
|
|
}
|
|
}
|
|
decoded.Fields = decoded.Fields[:i]
|
|
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
|
|
}
|
|
|
|
// 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)
|
|
}
|
|
|
|
func (o *Post) IsFromOAuthBot() bool {
|
|
props := o.GetProps()
|
|
return props["from_webhook"] == "true" && props["override_username"] != ""
|
|
}
|
|
|
|
func (o *Post) ToNilIfInvalid() *Post {
|
|
if o.Id == "" {
|
|
return nil
|
|
}
|
|
return o
|
|
}
|
|
|
|
func (o *Post) RemovePreviewPost() {
|
|
if o.Metadata == nil || o.Metadata.Embeds == nil {
|
|
return
|
|
}
|
|
n := 0
|
|
for _, embed := range o.Metadata.Embeds {
|
|
if embed.Type != PostEmbedPermalink {
|
|
o.Metadata.Embeds[n] = embed
|
|
n++
|
|
}
|
|
}
|
|
o.Metadata.Embeds = o.Metadata.Embeds[:n]
|
|
}
|
|
|
|
func (o *Post) GetPreviewPost() *PreviewPost {
|
|
for _, embed := range o.Metadata.Embeds {
|
|
if embed.Type == PostEmbedPermalink {
|
|
if previewPost, ok := embed.Data.(*PreviewPost); ok {
|
|
return previewPost
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (o *Post) GetPreviewedPostProp() string {
|
|
if val, ok := o.GetProp(PostPropsPreviewedPost).(string); ok {
|
|
return val
|
|
}
|
|
return ""
|
|
}
|