using Gee; using Xmpp; using Xmpp.Xep; using Dino.Entities; using Qlite; namespace Dino { public class MessageProcessor : StreamInteractionModule, Object { public static ModuleIdentity IDENTITY = new ModuleIdentity("message_processor"); public string id { get { return IDENTITY.id; } } public signal void message_received(Entities.Message message, Conversation conversation); public signal void build_message_stanza(Entities.Message message, Xmpp.MessageStanza message_stanza, Conversation conversation); public signal void pre_message_send(Entities.Message message, Xmpp.MessageStanza message_stanza, Conversation conversation); public signal void message_sent(Entities.Message message, Conversation conversation); public signal void message_sent_or_received(Entities.Message message, Conversation conversation); public signal void history_synced(Account account); public HistorySync history_sync; public MessageListenerHolder received_pipeline = new MessageListenerHolder(); private StreamInteractor stream_interactor; private Database db; public static void start(StreamInteractor stream_interactor, Database db) { MessageProcessor m = new MessageProcessor(stream_interactor, db); stream_interactor.add_module(m); } private MessageProcessor(StreamInteractor stream_interactor, Database db) { this.stream_interactor = stream_interactor; this.db = db; this.history_sync = new HistorySync(db, stream_interactor); received_pipeline.connect(new DeduplicateMessageListener(this)); received_pipeline.connect(new FilterMessageListener()); received_pipeline.connect(new StoreMessageListener(this, stream_interactor)); received_pipeline.connect(new StoreContentItemListener(stream_interactor)); received_pipeline.connect(new MamMessageListener(stream_interactor)); stream_interactor.account_added.connect(on_account_added); stream_interactor.stream_negotiated.connect(send_unsent_chat_messages); stream_interactor.stream_resumed.connect(send_unsent_chat_messages); } public Entities.Message send_text(string text, Conversation conversation) { Entities.Message message = create_out_message(text, conversation); return send_message(message, conversation); } public Entities.Message send_message(Entities.Message message, Conversation conversation) { stream_interactor.get_module(ContentItemStore.IDENTITY).insert_message(message, conversation); send_xmpp_message(message, conversation); message_sent(message, conversation); return message; } private void convert_sending_to_unsent_msgs(Account account) { db.message.update() .with(db.message.account_id, "=", account.id) .with(db.message.marked, "=", Message.Marked.SENDING) .set(db.message.marked, Message.Marked.UNSENT) .perform(); } private void send_unsent_chat_messages(Account account) { var select = db.message.select() .with(db.message.account_id, "=", account.id) .with(db.message.marked, "=", (int) Message.Marked.UNSENT) .with(db.message.type_, "=", (int) Message.Type.CHAT); send_unsent_messages(account, select); } public void send_unsent_muc_messages(Account account, Jid muc_jid) { var select = db.message.select() .with(db.message.account_id, "=", account.id) .with(db.message.marked, "=", (int) Message.Marked.UNSENT) .with(db.message.counterpart_id, "=", db.get_jid_id(muc_jid)); send_unsent_messages(account, select); } private void send_unsent_messages(Account account, QueryBuilder select) { foreach (Row row in select) { try { Message message = new Message.from_row(db, row); Conversation? msg_conv = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(message.counterpart, account, Util.get_conversation_type_for_message(message)); if (msg_conv != null) { Message cached_msg = stream_interactor.get_module(MessageStorage.IDENTITY).get_message_by_id(message.id, msg_conv); send_xmpp_message(cached_msg ?? message, msg_conv, true); } } catch (InvalidJidError e) { warning("Ignoring message with invalid Jid: %s", e.message); } } } private void on_account_added(Account account) { stream_interactor.module_manager.get_module(account, Xmpp.MessageModule.IDENTITY).received_message.connect( (stream, message) => { on_message_received.begin(account, message); }); stream_interactor.module_manager.get_module(account, Xmpp.MessageModule.IDENTITY).received_error.connect((stream, message_stanza, error_stanza) => { Message? message = null; Gee.List conversations = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversations(message_stanza.from, account); foreach (Conversation conversation in conversations) { message = stream_interactor.get_module(MessageStorage.IDENTITY).get_message_by_stanza_id(message_stanza.id, conversation); if (message != null) break; } if (message == null) return; // We don't care about delivery errors if our counterpart already ACKed the message. if (message.marked in Message.MARKED_RECEIVED) return; warning("Message delivery error from %s. Type: %s, Condition: %s, Text: %s", message_stanza.from.to_string(), error_stanza.type_ ?? "-", error_stanza.condition, error_stanza.text ?? "-"); if (error_stanza.condition == Xmpp.ErrorStanza.CONDITION_RECIPIENT_UNAVAILABLE && error_stanza.type_ == Xmpp.ErrorStanza.TYPE_CANCEL) return; message.marked = Message.Marked.ERROR; }); convert_sending_to_unsent_msgs(account); } private async void on_message_received(Account account, Xmpp.MessageStanza message_stanza) { // If it's a message from MAM, it's going to be processed by HistorySync which calls run_pipeline_announce later. if (history_sync.process(account, message_stanza)) return; run_pipeline_announce.begin(account, message_stanza); } public async void run_pipeline_announce(Account account, Xmpp.MessageStanza message_stanza) { Entities.Message message = yield parse_message_stanza(account, message_stanza); Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation_for_message(message); if (conversation == null) return; bool abort = yield received_pipeline.run(message, message_stanza, conversation); if (abort) return; if (message.direction == Entities.Message.DIRECTION_RECEIVED) { message_received(message, conversation); } else if (message.direction == Entities.Message.DIRECTION_SENT) { message_sent(message, conversation); } message_sent_or_received(message, conversation); } public async Entities.Message parse_message_stanza(Account account, Xmpp.MessageStanza message) { string? body = message.body; if (body != null) body = body.strip(); Entities.Message new_message = new Entities.Message(body); new_message.account = account; new_message.stanza_id = Xep.UniqueStableStanzaIDs.get_origin_id(message) ?? message.id; Jid? counterpart_override = null; if (message.from.equals(stream_interactor.get_module(MucManager.IDENTITY).get_own_jid(message.from.bare_jid, account))) { new_message.direction = Entities.Message.DIRECTION_SENT; counterpart_override = message.from.bare_jid; } else if (account.bare_jid.equals_bare(message.from)) { new_message.direction = Entities.Message.DIRECTION_SENT; } else { new_message.direction = Entities.Message.DIRECTION_RECEIVED; } new_message.counterpart = counterpart_override ?? (new_message.direction == Entities.Message.DIRECTION_SENT ? message.to : message.from); new_message.ourpart = new_message.direction == Entities.Message.DIRECTION_SENT ? message.from : message.to; XmppStream? stream = stream_interactor.get_stream(account); Xmpp.MessageArchiveManagement.MessageFlag? mam_message_flag = Xmpp.MessageArchiveManagement.MessageFlag.get_flag(message); EntityInfo entity_info = stream_interactor.get_module(EntityInfo.IDENTITY); if (mam_message_flag != null && mam_message_flag.mam_id != null) { bool server_does_mam = entity_info.has_feature_cached(account, account.bare_jid, Xmpp.MessageArchiveManagement.NS_URI); if (server_does_mam) { new_message.server_id = mam_message_flag.mam_id; } } else if (message.type_ == Xmpp.MessageStanza.TYPE_GROUPCHAT) { bool server_supports_sid = (yield entity_info.has_feature(account, new_message.counterpart.bare_jid, Xep.UniqueStableStanzaIDs.NS_URI)) || (yield entity_info.has_feature(account, new_message.counterpart.bare_jid, Xmpp.MessageArchiveManagement.NS_URI)); if (server_supports_sid) { new_message.server_id = Xep.UniqueStableStanzaIDs.get_stanza_id(message, new_message.counterpart.bare_jid); } } else if (message.type_ == Xmpp.MessageStanza.TYPE_CHAT) { bool server_supports_sid = (yield entity_info.has_feature(account, account.bare_jid, Xep.UniqueStableStanzaIDs.NS_URI)) || (yield entity_info.has_feature(account, account.bare_jid, Xmpp.MessageArchiveManagement.NS_URI)); if (server_supports_sid) { new_message.server_id = Xep.UniqueStableStanzaIDs.get_stanza_id(message, account.bare_jid); } } if (mam_message_flag != null) new_message.local_time = mam_message_flag.server_time; DateTime now = new DateTime.from_unix_utc(new DateTime.now_utc().to_unix()); // Remove milliseconds. They are not stored in the db and might lead to ordering issues when compared with times from the db. if (new_message.local_time == null || new_message.local_time.compare(now) > 0) new_message.local_time = now; Xep.DelayedDelivery.MessageFlag? delayed_message_flag = Xep.DelayedDelivery.MessageFlag.get_flag(message); if (delayed_message_flag != null) new_message.time = delayed_message_flag.datetime; if (new_message.time == null || new_message.time.compare(new_message.local_time) > 0) new_message.time = new_message.local_time; new_message.type_ = yield determine_message_type(account, message, new_message); return new_message; } private async Entities.Message.Type determine_message_type(Account account, Xmpp.MessageStanza message_stanza, Entities.Message message) { if (message_stanza.type_ == Xmpp.MessageStanza.TYPE_GROUPCHAT) { return Entities.Message.Type.GROUPCHAT; } if (message_stanza.type_ == Xmpp.MessageStanza.TYPE_CHAT) { Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(message.counterpart.bare_jid, account); if (conversation != null) { if (conversation.type_ == Conversation.Type.CHAT) { return Entities.Message.Type.CHAT; } else if (conversation.type_ == Conversation.Type.GROUPCHAT) { return Entities.Message.Type.GROUPCHAT_PM; } } else { XmppStream stream = stream_interactor.get_stream(account); if (stream != null) { Gee.Set? identities = yield stream.get_module(Xep.ServiceDiscovery.Module.IDENTITY).get_entity_identities(stream, message.counterpart.bare_jid); if (identities == null) { return Entities.Message.Type.CHAT; } foreach (Xep.ServiceDiscovery.Identity identity in identities) { if (identity.category == Xep.ServiceDiscovery.Identity.CATEGORY_CONFERENCE) { return Entities.Message.Type.GROUPCHAT_PM; } else { return Entities.Message.Type.CHAT; } } } } } return Entities.Message.Type.CHAT; } private bool is_duplicate(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { Account account = conversation.account; // Deduplicate by server_id if (message.server_id != null) { QueryBuilder builder = db.message.select() .with(db.message.server_id, "=", message.server_id) .with(db.message.counterpart_id, "=", db.get_jid_id(message.counterpart)) .with(db.message.account_id, "=", account.id); // If the message is a duplicate if (builder.count() > 0) { history_sync.on_server_id_duplicate(account, stanza, message); return true; } } // Deduplicate messages by uuid bool is_uuid = message.stanza_id != null && Regex.match_simple("""[0-9A-Fa-f]{8}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{12}""", message.stanza_id); if (is_uuid) { QueryBuilder builder = db.message.select() .with(db.message.stanza_id, "=", message.stanza_id) .with(db.message.counterpart_id, "=", db.get_jid_id(message.counterpart)) .with(db.message.account_id, "=", account.id); if (message.direction == Message.DIRECTION_RECEIVED) { if (message.counterpart.resourcepart != null) { builder.with(db.message.counterpart_resource, "=", message.counterpart.resourcepart); } else { builder.with_null(db.message.counterpart_resource); } } else if (message.direction == Message.DIRECTION_SENT) { if (message.ourpart.resourcepart != null) { builder.with(db.message.our_resource, "=", message.ourpart.resourcepart); } else { builder.with_null(db.message.our_resource); } } bool duplicate = builder.single().row().is_present(); return duplicate; } // Deduplicate messages based on content and metadata QueryBuilder builder = db.message.select() .with(db.message.account_id, "=", account.id) .with(db.message.counterpart_id, "=", db.get_jid_id(message.counterpart)) .with(db.message.body, "=", message.body) .with(db.message.time, "<", (long) message.time.add_minutes(1).to_unix()) .with(db.message.time, ">", (long) message.time.add_minutes(-1).to_unix()); if (message.stanza_id != null) { builder.with(db.message.stanza_id, "=", message.stanza_id); } else { builder.with_null(db.message.stanza_id); } if (message.counterpart.resourcepart != null) { builder.with(db.message.counterpart_resource, "=", message.counterpart.resourcepart); } else { builder.with_null(db.message.counterpart_resource); } return builder.count() > 0; } private class DeduplicateMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "FILTER_EMPTY", "MUC" }; public override string action_group { get { return "DEDUPLICATE"; } } public override string[] after_actions { get { return after_actions_const; } } private MessageProcessor outer; public DeduplicateMessageListener(MessageProcessor outer) { this.outer = outer; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { return outer.is_duplicate(message, stanza, conversation); } } private class FilterMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "DECRYPT" }; public override string action_group { get { return "FILTER_EMPTY"; } } public override string[] after_actions { get { return after_actions_const; } } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { return (message.body == null); } } private class StoreMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "DEDUPLICATE", "DECRYPT", "FILTER_EMPTY" }; public override string action_group { get { return "STORE"; } } public override string[] after_actions { get { return after_actions_const; } } private MessageProcessor outer; private StreamInteractor stream_interactor; public StoreMessageListener(MessageProcessor outer, StreamInteractor stream_interactor) { this.outer = outer; this.stream_interactor = stream_interactor; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { if (message.body == null || outer.is_duplicate(message, stanza, conversation)) return true; stream_interactor.get_module(MessageStorage.IDENTITY).add_message(message, conversation); return false; } } private class StoreContentItemListener : MessageListener { public string[] after_actions_const = new string[]{ "DEDUPLICATE", "DECRYPT", "FILTER_EMPTY", "STORE", "CORRECTION", "MESSAGE_REINTERPRETING" }; public override string action_group { get { return "STORE_CONTENT_ITEM"; } } public override string[] after_actions { get { return after_actions_const; } } private StreamInteractor stream_interactor; public StoreContentItemListener(StreamInteractor stream_interactor) { this.stream_interactor = stream_interactor; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { if (message.body == null) return true; stream_interactor.get_module(ContentItemStore.IDENTITY).insert_message(message, conversation); return false; } } private class MamMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "DEDUPLICATE" }; public override string action_group { get { return "MAM_NODE"; } } public override string[] after_actions { get { return after_actions_const; } } private StreamInteractor stream_interactor; public MamMessageListener(StreamInteractor stream_interactor) { this.stream_interactor = stream_interactor; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { bool is_mam_message = Xmpp.MessageArchiveManagement.MessageFlag.get_flag(stanza) != null; XmppStream? stream = stream_interactor.get_stream(conversation.account); Xmpp.MessageArchiveManagement.Flag mam_flag = Xmpp.MessageArchiveManagement.Flag.get_flag(stream); if (is_mam_message || (mam_flag != null && mam_flag.cought_up == true)) { conversation.account.mam_earliest_synced = message.local_time; } return false; } } public Entities.Message create_out_message(string text, Conversation conversation) { Entities.Message message = new Entities.Message(text); message.type_ = Util.get_message_type_for_conversation(conversation); message.stanza_id = random_uuid(); message.account = conversation.account; message.body = text; DateTime now = new DateTime.from_unix_utc(new DateTime.now_utc().to_unix()); // Remove milliseconds. They are not stored in the db and might lead to ordering issues when compared with times from the db. message.time = now; message.local_time = now; message.direction = Entities.Message.DIRECTION_SENT; message.counterpart = conversation.counterpart; if (conversation.type_ == Conversation.Type.GROUPCHAT) { message.ourpart = stream_interactor.get_module(MucManager.IDENTITY).get_own_jid(conversation.counterpart, conversation.account) ?? conversation.account.bare_jid; message.real_jid = conversation.account.bare_jid; } else { message.ourpart = conversation.account.full_jid; } message.marked = Entities.Message.Marked.UNSENT; message.encryption = conversation.encryption; stream_interactor.get_module(MessageStorage.IDENTITY).add_message(message, conversation); return message; } public void send_xmpp_message(Entities.Message message, Conversation conversation, bool delayed = false) { XmppStream stream = stream_interactor.get_stream(conversation.account); message.marked = Entities.Message.Marked.SENDING; if (stream == null) { message.marked = Entities.Message.Marked.UNSENT; return; } MessageStanza new_message = new MessageStanza(message.stanza_id); new_message.to = message.counterpart; new_message.body = message.body; if (conversation.type_ == Conversation.Type.GROUPCHAT) { new_message.type_ = MessageStanza.TYPE_GROUPCHAT; } else { new_message.type_ = MessageStanza.TYPE_CHAT; } string? fallback = get_fallback_body_set_infos(message, new_message, conversation); new_message.body = fallback == null ? message.body : fallback + message.body; build_message_stanza(message, new_message, conversation); pre_message_send(message, new_message, conversation); if (message.marked == Entities.Message.Marked.UNSENT || message.marked == Entities.Message.Marked.WONTSEND) return; if (delayed) { DelayedDelivery.Module.set_message_delay(new_message, message.time); } // Set an origin ID if a MUC doen't guarantee to keep IDs if (conversation.type_ == Conversation.Type.GROUPCHAT) { Xep.Muc.Flag? flag = stream.get_flag(Xep.Muc.Flag.IDENTITY); if (flag == null) { message.marked = Entities.Message.Marked.UNSENT; return; } if(!flag.has_room_feature(conversation.counterpart, Xep.Muc.Feature.STABLE_ID)) { UniqueStableStanzaIDs.set_origin_id(new_message, message.stanza_id); } } if (conversation.get_send_typing_setting(stream_interactor) == Conversation.Setting.ON) { ChatStateNotifications.add_state_to_message(new_message, ChatStateNotifications.STATE_ACTIVE); } stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, new_message, (_, res) => { try { stream.get_module(MessageModule.IDENTITY).send_message.end(res); if (message.marked == Message.Marked.SENDING) { message.marked = Message.Marked.SENT; } // The server might not have given us the resource we asked for. In that case, store the actual resource the message was sent with. Relevant for deduplication. Jid? current_own_jid = stream.get_flag(Bind.Flag.IDENTITY).my_jid; if (!conversation.type_.is_muc_semantic() && current_own_jid != null && !current_own_jid.equals(message.ourpart)) { message.ourpart = current_own_jid; } } catch (IOError e) { message.marked = Entities.Message.Marked.UNSENT; if (stream != stream_interactor.get_stream(conversation.account)) { Timeout.add_seconds(3, () => { send_unsent_chat_messages(conversation.account); return false; }); } } }); } public string? get_fallback_body_set_infos(Entities.Message message, MessageStanza new_stanza, Conversation conversation) { if (message.quoted_item_id == 0) return null; ContentItem? content_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item_by_id(conversation, message.quoted_item_id); if (content_item == null) return null; Jid? quoted_sender = stream_interactor.get_module(ContentItemStore.IDENTITY).get_message_sender_for_content_item(conversation, content_item); string? quoted_stanza_id = stream_interactor.get_module(ContentItemStore.IDENTITY).get_message_id_for_content_item(conversation, content_item); if (quoted_sender != null && quoted_stanza_id != null) { Xep.Replies.set_reply_to(new_stanza, new Xep.Replies.ReplyTo(quoted_sender, quoted_stanza_id)); } string fallback = FallbackBody.get_quoted_fallback_body(content_item); long fallback_length = fallback.length; var fallback_location = new Xep.FallbackIndication.FallbackLocation(0, (int)fallback_length); Xep.FallbackIndication.set_fallback(new_stanza, new Xep.FallbackIndication.Fallback(Xep.Replies.NS_URI, new Xep.FallbackIndication.FallbackLocation[] { fallback_location })); return fallback; } } public abstract class MessageListener : Xmpp.OrderedListener { public abstract async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation); } public class MessageListenerHolder : Xmpp.ListenerHolder { public async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { foreach (OrderedListener ol in listeners) { MessageListener l = ol as MessageListener; bool stop = yield l.run(message, stanza, conversation); if (stop) return true; } return false; } } }