| 1 | package mastodon |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "context" |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "regexp" |
| 9 | "strings" |
| 10 | |
| 11 | "github.com/matterbridge-org/matterbridge/bridge" |
| 12 | "github.com/matterbridge-org/matterbridge/bridge/config" |
| 13 | "github.com/matterbridge-org/matterbridge/bridge/helper" |
| 14 | |
| 15 | mastodon "github.com/mattn/go-mastodon" |
| 16 | ) |
| 17 | |
| 18 | var ( |
| 19 | htmlReplacementTag = regexp.MustCompile("<[^>]*>") |
| 20 | channelTypeHome = "home" |
| 21 | channelTypeLocal = "local" |
| 22 | channelTypeRemote = "remote" |
| 23 | channelTypeDirect = "direct" |
| 24 | ) |
| 25 | |
| 26 | var errInvalidChannel = errors.New("invalid channel name") |
| 27 | |
| 28 | func InvalidChannelError(name string) error { |
| 29 | return fmt.Errorf("%w: %s", errInvalidChannel, name) |
| 30 | } |
| 31 | |
| 32 | type Bmastodon struct { |
| 33 | *bridge.Config |
| 34 | |
| 35 | c *mastodon.Client |
| 36 | account *mastodon.Account |
| 37 | |
| 38 | rooms []string |
| 39 | handles []context.CancelFunc |
| 40 | } |
| 41 | |
| 42 | func New(cfg *bridge.Config) bridge.Bridger { |
| 43 | b := &Bmastodon{Config: cfg} |
| 44 | return b |
| 45 | } |
| 46 | |
| 47 | func (b *Bmastodon) Connect() error { |
| 48 | b.Log.Infof("Connecting %s", b.GetString("Server")) |
| 49 | |
| 50 | cfg := mastodon.Config{ |
| 51 | Server: b.GetString("Server"), |
| 52 | ClientID: b.GetString("ClientID"), |
| 53 | ClientSecret: b.GetString("ClientSecret"), |
| 54 | AccessToken: b.GetString("AccessToken"), |
| 55 | } |
| 56 | b.c = mastodon.NewClient(&cfg) |
| 57 | |
| 58 | var err error |
| 59 | |
| 60 | b.account, err = |
| 61 | b.c.GetAccountCurrentUser(context.Background()) |
| 62 | if err != nil { |
| 63 | return err |
| 64 | } |
| 65 | |
| 66 | return nil |
| 67 | } |
| 68 | |
| 69 | func (b *Bmastodon) Disconnect() error { |
| 70 | for _, ctxCancel := range b.handles { |
| 71 | ctxCancel() |
| 72 | } |
| 73 | |
| 74 | return nil |
| 75 | } |
| 76 | |
| 77 | func (b *Bmastodon) JoinChannel(channel config.ChannelInfo) error { |
| 78 | var ( |
| 79 | channelType string |
| 80 | ch chan mastodon.Event |
| 81 | err error |
| 82 | ) |
| 83 | |
| 84 | ctx, ctxCancel := context.WithCancel(context.Background()) |
| 85 | |
| 86 | switch channel.Name { |
| 87 | case "home": |
| 88 | channelType = channelTypeHome |
| 89 | ch, err = b.c.StreamingUser(ctx) |
| 90 | case "local": |
| 91 | channelType = channelTypeLocal |
| 92 | ch, err = b.c.StreamingPublic(ctx, true) |
| 93 | case "remote": |
| 94 | channelType = channelTypeRemote |
| 95 | ch, err = b.c.StreamingPublic(ctx, false) |
| 96 | default: |
| 97 | if !strings.HasPrefix(channel.Name, "@") { |
| 98 | ctxCancel() |
| 99 | return InvalidChannelError(channel.Name) |
| 100 | } |
| 101 | |
| 102 | channelType = channelTypeDirect |
| 103 | ch, err = b.c.StreamingDirect(ctx) |
| 104 | } |
| 105 | |
| 106 | if err != nil { |
| 107 | ctxCancel() |
| 108 | return err |
| 109 | } |
| 110 | |
| 111 | b.rooms = append(b.rooms, channel.Name) |
| 112 | b.handles = append(b.handles, ctxCancel) |
| 113 | |
| 114 | go func() { |
| 115 | b.Log.Debugf("run golang channel on streaming api call, channel name: %v", channel.Name) |
| 116 | |
| 117 | for msg := range ch { |
| 118 | switch t := msg.(type) { |
| 119 | case *mastodon.UpdateEvent: |
| 120 | switch channelType { |
| 121 | case channelTypeHome, channelTypeLocal, channelTypeRemote: |
| 122 | b.handleSendRemoteStatus(t.Status, channel.Name) |
| 123 | default: |
| 124 | b.Log.Debugf("run UpdateEvent on unsupported channelType: %s", channelType) |
| 125 | } |
| 126 | case *mastodon.ConversationEvent: |
| 127 | switch channelType { |
| 128 | case channelTypeHome, channelTypeLocal, channelTypeRemote: |
| 129 | // Not a conversation |
| 130 | b.Log.Debugf("run ConversationEvent on unsupported channelType: %s", channelType) |
| 131 | default: |
| 132 | b.handleSendRemoteStatus(t.Conversation.LastStatus, channel.Name) |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | }() |
| 137 | |
| 138 | return nil |
| 139 | } |
| 140 | |
| 141 | func (b *Bmastodon) Send(msg config.Message) (string, error) { |
| 142 | ctx := context.Background() |
| 143 | |
| 144 | // Standard Message Send |
| 145 | if msg.Event == "" { |
| 146 | sentMessage, err := b.handleSendingMessage(ctx, &msg) |
| 147 | if err != nil { |
| 148 | b.Log.Errorf("Could not send message to room %v from %v: %v", msg.Channel, msg.Username, err) |
| 149 | |
| 150 | return "", nil |
| 151 | } |
| 152 | |
| 153 | return string(sentMessage.ID), nil |
| 154 | } |
| 155 | |
| 156 | // Message Deletion |
| 157 | if msg.Event == config.EventMsgDelete { |
| 158 | if msg.UserID != string(b.account.ID) { |
| 159 | b.Log.Errorf("Can not delete a status that is owned by a different account") |
| 160 | return "", nil |
| 161 | } |
| 162 | |
| 163 | err := b.c.DeleteStatus(context.Background(), mastodon.ID(msg.ID)) |
| 164 | |
| 165 | return "", err |
| 166 | } |
| 167 | |
| 168 | // Message is not a type that is currently supported |
| 169 | return "", nil |
| 170 | } |
| 171 | |
| 172 | func (b *Bmastodon) handleSendRemoteStatus(msg *mastodon.Status, channel string) { |
| 173 | if msg.Account.ID == b.account.ID { |
| 174 | // Ignore messages that are from the bot user |
| 175 | return |
| 176 | } |
| 177 | |
| 178 | remoteMessage := config.Message{ |
| 179 | Text: htmlReplacementTag.ReplaceAllString(msg.Content, ""), |
| 180 | Channel: channel, |
| 181 | Username: msg.Account.DisplayName, |
| 182 | UserID: string(msg.Account.ID), |
| 183 | Account: b.Account, |
| 184 | Avatar: msg.Account.Avatar, |
| 185 | ID: string(msg.ID), |
| 186 | Extra: map[string][]any{}, |
| 187 | } |
| 188 | if len(msg.MediaAttachments) > 0 { |
| 189 | remoteMessage.Extra["file"] = []any{} |
| 190 | } |
| 191 | |
| 192 | for _, media := range msg.MediaAttachments { |
| 193 | b, err2 := helper.DownloadFile(media.RemoteURL) |
| 194 | if err2 != nil { |
| 195 | // TODO: log |
| 196 | continue |
| 197 | } |
| 198 | |
| 199 | remoteMessage.Extra["file"] = append(remoteMessage.Extra["file"], config.FileInfo{ |
| 200 | Name: media.Description, |
| 201 | Data: b, |
| 202 | Size: int64(len(*b)), |
| 203 | Avatar: false, |
| 204 | }) |
| 205 | } |
| 206 | |
| 207 | b.Log.Debugf("<= Message is %#v", remoteMessage) |
| 208 | |
| 209 | b.Remote <- remoteMessage |
| 210 | } |
| 211 | |
| 212 | func (b *Bmastodon) handleSendingMessage(ctx context.Context, msg *config.Message) (*mastodon.Status, error) { |
| 213 | toot := mastodon.Toot{ |
| 214 | Status: msg.Text, |
| 215 | InReplyToID: "", |
| 216 | MediaIDs: []mastodon.ID{}, |
| 217 | Sensitive: false, |
| 218 | SpoilerText: "", |
| 219 | Visibility: "public", |
| 220 | Language: "", |
| 221 | } |
| 222 | if strings.HasPrefix(msg.Channel, "#") { |
| 223 | toot.Status += " " + msg.Channel |
| 224 | } |
| 225 | |
| 226 | if strings.HasPrefix(msg.Channel, "@") { |
| 227 | toot.Visibility = "private" |
| 228 | } |
| 229 | |
| 230 | if msg.ParentID != "" { |
| 231 | toot.InReplyToID = mastodon.ID(msg.ParentID) |
| 232 | if toot.Visibility == "public" { |
| 233 | toot.Visibility = "unlisted" |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | for _, file := range *msg.GetFileInfos(b.Log) { |
| 238 | attachment, err := b.c.UploadMediaFromMedia(ctx, &mastodon.Media{ |
| 239 | File: bytes.NewReader(*file.Data), |
| 240 | Description: file.Comment, |
| 241 | }) |
| 242 | if err != nil { |
| 243 | b.Log.Error(err) |
| 244 | continue |
| 245 | } |
| 246 | |
| 247 | toot.MediaIDs = append(toot.MediaIDs, attachment.ID) |
| 248 | } |
| 249 | |
| 250 | return b.c.PostStatus(ctx, &toot) |
| 251 | } |
| 252 | |
