using Gee; using Xmpp; using Dino.Entities; 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 MessageListenerHolder received_pipeline = new MessageListenerHolder(); private StreamInteractor stream_interactor; private Database db; private Object lock_send_unsent; 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; stream_interactor.account_added.connect(on_account_added); stream_interactor.connection_manager.connection_state_changed.connect((account, state) => { if (state == ConnectionManager.ConnectionState.CONNECTED) send_unsent_messages(account); }); received_pipeline.connect(new DeduplicateMessageListener(db)); received_pipeline.connect(new StoreMessageListener(stream_interactor)); received_pipeline.connect(new MamMessageListener(stream_interactor)); received_pipeline.connect(new SlackMessageListener()); } 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(MessageStorage.IDENTITY).add_message(message, conversation); send_xmpp_message(message, conversation); message_sent(message, conversation); return message; } public void send_unsent_messages(Account account, Jid? jid = null) { Gee.List unsend_messages = db.get_unsend_messages(account, jid); foreach (Entities.Message message in unsend_messages) { Conversation? msg_conv = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(message.counterpart, account); if (msg_conv != null) { send_xmpp_message(message, msg_conv, true); } } } 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.Xep.MessageArchiveManagement.Module.IDENTITY).feature_available.connect( (stream) => { DateTime start_time = account.mam_earliest_synced.to_unix() > 60 ? account.mam_earliest_synced.add_minutes(-1) : account.mam_earliest_synced; stream.get_module(Xep.MessageArchiveManagement.Module.IDENTITY).query_archive(stream, null, start_time, null); }); } private async void on_message_received(Account account, Xmpp.MessageStanza message_stanza) { if (message_stanza.body == null) return; Entities.Message message = yield create_in_message(account, message_stanza); Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation_for_message(message); if (conversation != null) { 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); } } private async Entities.Message create_in_message(Account account, Xmpp.MessageStanza message) { Entities.Message new_message = new Entities.Message(message.body); new_message.account = account; new_message.stanza_id = message.id; if (!account.bare_jid.equals_bare(message.from) || message.from.equals(stream_interactor.get_module(MucManager.IDENTITY).get_own_jid(message.from.bare_jid, account))) { new_message.direction = Entities.Message.DIRECTION_RECEIVED; } else { new_message.direction = Entities.Message.DIRECTION_SENT; } new_message.counterpart = 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; new_message.stanza = message; Xep.MessageArchiveManagement.MessageFlag? mam_message_flag = Xep.MessageArchiveManagement.MessageFlag.get_flag(message); if (mam_message_flag != null) new_message.local_time = mam_message_flag.server_time; if (new_message.local_time == null || new_message.local_time.compare(new DateTime.now_utc()) > 0) new_message.local_time = new DateTime.now_utc(); 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 { SourceFunc callback = determine_message_type.callback; XmppStream stream = stream_interactor.get_stream(account); if (stream != null) stream.get_module(Xep.ServiceDiscovery.Module.IDENTITY).get_entity_categories(stream, message.counterpart.bare_jid, (stream, identities) => { if (identities == null) { message.type_ = Entities.Message.Type.CHAT; Idle.add((owned) callback); return; } foreach (Xep.ServiceDiscovery.Identity identity in identities) { if (identity.category == Xep.ServiceDiscovery.Identity.CATEGORY_CONFERENCE) { message.type_ = Entities.Message.Type.GROUPCHAT_PM; } else { message.type_ = Entities.Message.Type.CHAT; } } Idle.add((owned) callback); }); yield; } } return Entities.Message.Type.CHAT; } private class DeduplicateMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "" }; public override string action_group { get { return "DEDUPLICATE"; } } public override string[] after_actions { get { return after_actions_const; } } private Database db; public DeduplicateMessageListener(Database db) { this.db = db; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { 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); bool new_uuid_msg = is_uuid && !db.contains_message_by_stanza_id(message.stanza_id, conversation.account); bool new_misc_msg = !is_uuid && !db.contains_message(message, conversation.account); bool new_msg = new_uuid_msg || new_misc_msg; return !new_msg; } } private class StoreMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "DEDUPLICATE" }; public override string action_group { get { return "STORE"; } } public override string[] after_actions { get { return after_actions_const; } } private StreamInteractor stream_interactor; public StoreMessageListener(StreamInteractor stream_interactor) { this.stream_interactor = stream_interactor; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { stream_interactor.get_module(MessageStorage.IDENTITY).add_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 = Xep.MessageArchiveManagement.MessageFlag.get_flag(stanza) != null; XmppStream? stream = stream_interactor.get_stream(conversation.account); Xep.MessageArchiveManagement.Flag? mam_flag = stream != null ? stream.get_flag(Xep.MessageArchiveManagement.Flag.IDENTITY) : null; if (is_mam_message || (mam_flag != null && mam_flag.cought_up == true)) { conversation.account.mam_earliest_synced = message.local_time; } return false; } } private class SlackMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "DEDUPLICATE" }; public override string action_group { get { return "SLACK"; } } public override string[] after_actions { get { return after_actions_const; } } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { // Slack non-standard behavior Account account = conversation.account; if (account.domainpart.index_of("xmpp.slack.com") == account.domainpart.length - 14) { if (message.counterpart.equals_bare(account.bare_jid)) { // Ignore messages from us, because we neither know which conversation they belong to, nor can match // them to one of our send messages because of timestamp mismatches. return true; } if (message.direction == Entities.Message.DIRECTION_RECEIVED && stanza.type_ == "chat" && message.body.index_of("["+account.localpart+"] ") == 0) { // That is the best thing we can do, although allowing for attacks. message.direction = Entities.Message.DIRECTION_SENT; message.body = message.body.substring(account.localpart.length + 3); } if (stanza.stanza.get_attribute("ts") != null) { message.time = new DateTime.from_unix_utc((int64) double.parse(stanza.stanza.get_attribute("ts"))); } } 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; message.time = new DateTime.now_utc(); message.local_time = new DateTime.now_utc(); message.direction = Entities.Message.DIRECTION_SENT; message.counterpart = conversation.counterpart; if (conversation.type_ in new Conversation.Type[]{Conversation.Type.GROUPCHAT, Conversation.Type.GROUPCHAT_PM}) { 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.bare_jid.with_resource(conversation.account.resourcepart); } message.marked = Entities.Message.Marked.UNSENT; message.encryption = conversation.encryption; return message; } public void send_xmpp_message(Entities.Message message, Conversation conversation, bool delayed = false) { lock (lock_send_unsent) { XmppStream stream = stream_interactor.get_stream(conversation.account); message.marked = Entities.Message.Marked.NONE; if (stream != null) { Xmpp.MessageStanza new_message = new Xmpp.MessageStanza(message.stanza_id); new_message.to = message.counterpart; new_message.body = message.body; if (conversation.type_ == Conversation.Type.GROUPCHAT) { new_message.type_ = Xmpp.MessageStanza.TYPE_GROUPCHAT; } else { new_message.type_ = Xmpp.MessageStanza.TYPE_CHAT; } 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) { Xmpp.Xep.DelayedDelivery.Module.set_message_delay(new_message, message.time); } stream.get_module(Xmpp.MessageModule.IDENTITY).send_message(stream, new_message); message.stanza_id = new_message.id; message.stanza = new_message; } else { message.marked = Entities.Message.Marked.UNSENT; } } } } 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; } } }