using Gee; using Xmpp; using Xmpp.Xep; using Dino.Entities; using Qlite; namespace Dino { public class MessageCorrection : StreamInteractionModule, MessageListener { public static ModuleIdentity IDENTITY = new ModuleIdentity("message_correction"); public string id { get { return IDENTITY.id; } } public signal void received_correction(ContentItem content_item); private StreamInteractor stream_interactor; private Database db; private HashMap> last_messages = new HashMap>(Conversation.hash_func, Conversation.equals_func); private HashMap outstanding_correction_nodes = new HashMap(); public static void start(StreamInteractor stream_interactor, Database db) { MessageCorrection m = new MessageCorrection(stream_interactor, db); stream_interactor.add_module(m); } public MessageCorrection(StreamInteractor stream_interactor, Database db) { this.stream_interactor = stream_interactor; this.db = db; stream_interactor.account_added.connect(on_account_added); stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(this); stream_interactor.get_module(MessageProcessor.IDENTITY).build_message_stanza.connect(check_add_correction_node); stream_interactor.get_module(PresenceManager.IDENTITY).received_offline_presence.connect((jid, account) => { Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(jid.bare_jid, account, Conversation.Type.GROUPCHAT); if (conversation != null) { if (last_messages.has_key(conversation)) last_messages[conversation].unset(jid); } }); } public void send_correction(Conversation conversation, Message old_message, string correction_text) { string stanza_id = old_message.edit_to ?? old_message.stanza_id; Message out_message = stream_interactor.get_module(MessageProcessor.IDENTITY).create_out_message(correction_text, conversation); out_message.edit_to = stanza_id; out_message.quoted_item_id = old_message.quoted_item_id; outstanding_correction_nodes[out_message.stanza_id] = stanza_id; stream_interactor.get_module(MessageProcessor.IDENTITY).send_xmpp_message(out_message, conversation); db.message_correction.insert() .value(db.message_correction.message_id, out_message.id) .value(db.message_correction.to_stanza_id, stanza_id) .perform(); db.content_item.update() .with(db.content_item.foreign_id, "=", old_message.id) .with(db.content_item.content_type, "=", 1) .set(db.content_item.foreign_id, out_message.id) .perform(); on_received_correction(conversation, out_message.id); } public bool is_own_correction_allowed(Conversation conversation, Message message) { string stanza_id = message.edit_to ?? message.stanza_id; Jid? own_jid = null; if (conversation.type_ == Conversation.Type.CHAT) { own_jid = conversation.account.full_jid; } else if (conversation.type_ == Conversation.Type.GROUPCHAT) { own_jid = stream_interactor.get_module(MucManager.IDENTITY).get_own_jid(conversation.counterpart, conversation.account); } if (own_jid == null) return false; return last_messages.has_key(conversation) && last_messages[conversation].has_key(own_jid) && last_messages[conversation][own_jid].stanza_id == stanza_id; } private void check_add_correction_node(Entities.Message message, Xmpp.MessageStanza message_stanza, Conversation conversation) { if (outstanding_correction_nodes.has_key(message.stanza_id)) { LastMessageCorrection.set_replace_id(message_stanza, outstanding_correction_nodes[message.stanza_id]); outstanding_correction_nodes.unset(message.stanza_id); } else { if (!last_messages.has_key(conversation)) { last_messages[conversation] = new HashMap(Jid.hash_func, Jid.equals_func); } last_messages[conversation][message.from] = message; } } public string[] after_actions_const = new string[]{ "DEDUPLICATE", "DECRYPT", "FILTER_EMPTY" }; public override string action_group { get { return "CORRECTION"; } } public override string[] after_actions { get { return after_actions_const; } } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { if (conversation.type_ != Conversation.Type.CHAT) { // Don't process messages or corrections from MUC history DateTime? mam_delay = Xep.DelayedDelivery.get_time_for_message(stanza, message.from.bare_jid); if (mam_delay != null) return false; } string? replace_id = Xep.LastMessageCorrection.get_replace_id(stanza); if (replace_id == null) { if (!last_messages.has_key(conversation)) { last_messages[conversation] = new HashMap(Jid.hash_func, Jid.equals_func); } last_messages[conversation][message.from] = message; return false; } if (!last_messages.has_key(conversation) || !last_messages[conversation].has_key(message.from)) return false; Message original_message = last_messages[conversation][message.from]; if (original_message.stanza_id != replace_id) return false; int message_id_to_be_updated = get_latest_correction_message_id(conversation.account.id, replace_id, db.get_jid_id(message.counterpart), message.counterpart.resourcepart); if (message_id_to_be_updated == -1) { message_id_to_be_updated = original_message.id; } db.message_correction.insert() .value(db.message_correction.message_id, message.id) .value(db.message_correction.to_stanza_id, replace_id) .perform(); int current_correction_message_id = get_latest_correction_message_id(conversation.account.id, replace_id, db.get_jid_id(message.counterpart), message.counterpart.resourcepart); if (current_correction_message_id != message_id_to_be_updated) { db.content_item.update() .with(db.content_item.foreign_id, "=", message_id_to_be_updated) .with(db.content_item.content_type, "=", 1) .set(db.content_item.foreign_id, current_correction_message_id) .perform(); message.edit_to = replace_id; on_received_correction(conversation, current_correction_message_id); return true; } return false; } private void on_received_correction(Conversation conversation, int message_id) { ContentItem? content_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item_by_foreign(conversation, 1, message_id); if (content_item != null) { received_correction(content_item); } } private int get_latest_correction_message_id(int account_id, string stanza_id, int counterpart_jid_id, string? counterpart_resource) { var qry = db.message_correction.select({db.message.id}) .join_with(db.message, db.message.id, db.message_correction.message_id) .with(db.message.account_id, "=", account_id) .with(db.message.counterpart_id, "=", counterpart_jid_id) .with(db.message_correction.to_stanza_id, "=", stanza_id) .order_by(db.message.time, "DESC"); if (counterpart_resource != null) { qry.with(db.message.counterpart_resource, "=", counterpart_resource); } RowOption row = qry.single().row(); if (row.is_present()) { return row[db.message.id]; } return -1; } private void on_account_added(Account account) { Gee.List conversations = stream_interactor.get_module(ConversationManager.IDENTITY).get_active_conversations(account); foreach (Conversation conversation in conversations) { if (conversation.type_ != Conversation.Type.CHAT) continue; HashMap last_conversation_messages = new HashMap(Jid.hash_func, Jid.equals_func); Gee.List messages = stream_interactor.get_module(MessageStorage.IDENTITY).get_messages(conversation); for (int i = messages.size - 1; i > 0; i--) { Message message = messages[i]; if (!last_conversation_messages.has_key(message.from) && message.edit_to == null) { last_conversation_messages[message.from] = message; } } last_messages[conversation] = last_conversation_messages; } } } }