Allow listing MUC owners

telegram/utils.go

@@ -91,6 +91,7 @@ const (
 	MembersListBanned
 	MembersListBannedAndAdministrators
 	MembersListAdministrators
+	MembersListCreators
 )
 
 const (
@@ -221,6 +222,18 @@ func (c *Client) GetContactByID(id int64, chat *client.Chat) (*client.Chat, *cli
 	return chat, user, nil
 }
 
+// GetChatByID gets exactly a chat from a cache, or error if chat is not found
+func (c *Client) GetChatByID(id int64, chat *client.Chat) (*client.Chat, error) {
+	chat, _, err := c.GetContactByID(id, nil)
+	if err != nil {
+		return nil, err
+	} else if chat == nil {
+		return nil, errors.New("Chat not found")
+	}
+
+	return chat, nil
+}
+
 // GetChatType obtains chat type from its information
 func (c *Client) GetChatType(id int64) (ChatType, *client.Chat, error) {
 	if !c.Online() || id == 0 {
@@ -2620,6 +2633,38 @@ func (c *Client) sendMessagesReverse(chatID int64, messages []*client.Message, p
 
 // GetChatMembers retrieves a list of chat members. "Limited" mode works only if there are no more than 20 members at all
 func (c *Client) GetChatMembers(chatID int64, limited bool, query string, membersList MembersList) ([]*client.ChatMember, error) {
+	if membersList == MembersListCreators {
+		chat, err := c.GetChatByID(chatID, nil)
+		if err != nil {
+			return nil, err
+		}
+
+		chatType := chat.Type.ChatTypeType()
+		if chatType == client.TypeChatTypeBasicGroup {
+			basicGroupType, _ := chat.Type.(*client.ChatTypeBasicGroup)
+			fullInfo, err := c.client.GetBasicGroupFullInfo(&client.GetBasicGroupFullInfoRequest{
+				BasicGroupId: basicGroupType.BasicGroupId,
+			})
+			if err != nil {
+				return nil, err
+			}
+
+			if fullInfo.CreatorUserId != 0 {
+				chatMember, err := c.client.GetChatMember(&client.GetChatMemberRequest{
+					ChatId:   chatID,
+					MemberId: &client.MessageSenderUser{UserId: fullInfo.CreatorUserId},
+				})
+				if err != nil {
+					return nil, err
+				}
+
+				return []*client.ChatMember{chatMember}, nil
+			}
+		}
+
+		return nil, errors.New("Creator not found")
+	}
+
 	var filters []client.ChatMembersFilter
 	switch membersList {
 	case MembersListMembers:
@@ -2638,11 +2683,9 @@ func (c *Client) GetChatMembers(chatID int64, limited bool, query string, member
 	if limited {
 		limit = 20
 
-		chat, _, err := c.GetContactByID(chatID, nil)
+		chat, err := c.GetChatByID(chatID, nil)
 		if err != nil {
 			return nil, err
-		} else if chat == nil {
-			return nil, errors.New("Chat not found")
 		}
 
 		chatType := chat.Type.ChatTypeType()

xmpp/handlers.go

@@ -1233,8 +1233,7 @@ func handleGetQueryMucAdmin(s xmpp.Sender, iq *stanza.IQ, query *extensions.Quer
 	}
 	switch item.Affiliation {
 	case "owner":
-		iqAnswerSetError(answer, 403)
-		return
+		membersList = telegram.MembersListCreators
 	case "admin":
 		membersList = telegram.MembersListAdministrators
 	case "member":