using Gee; using Xmpp; using Dino.Entities; namespace Dino { public class ConnectionManager { public signal void stream_opened(Account account, Core.XmppStream stream); public signal void connection_state_changed(Account account, ConnectionState state); public signal void connection_error(Account account, ConnectionError error); public enum ConnectionState { CONNECTED, CONNECTING, DISCONNECTED } private ArrayList connection_todo = new ArrayList(Account.equals_func); private HashMap connections = new HashMap(Account.hash_func, Account.equals_func); private HashMap connection_errors = new HashMap(Account.hash_func, Account.equals_func); private HashMap connection_mutexes = new HashMap(Account.hash_func, Account.equals_func); private NetworkManager? network_manager; private Login1Manager? login1; private NetworkManagerDBusProperties? dbus_properties; private ModuleManager module_manager; public string? log_options; public class ConnectionError { public enum Source { CONNECTION, SASL, STREAM_ERROR } public Source source; public string? identifier; public StreamError.Flag? flag; public ConnectionError(Source source, string? identifier) { this.source = source; this.identifier = identifier; } } private class Connection { public Core.XmppStream stream { get; set; } public ConnectionState connection_state { get; set; default = ConnectionState.DISCONNECTED; } public DateTime established { get; set; } public DateTime last_activity { get; set; } public class Connection(Core.XmppStream stream, DateTime established) { this.stream = stream; this.established = established; } } private class RecMutexWrap { public RecMutex mutex = new RecMutex(); public void lock() { mutex.lock(); } public void unlock() { mutex.unlock(); } public bool trylock() { return mutex.trylock(); } } public ConnectionManager(ModuleManager module_manager) { this.module_manager = module_manager; network_manager = get_network_manager(); if (network_manager != null) { network_manager.StateChanged.connect(on_nm_state_changed); } login1 = get_login1(); if (login1 != null) { login1.PrepareForSleep.connect(on_prepare_for_sleep); } dbus_properties = get_dbus_properties(); if (dbus_properties != null) { dbus_properties.properties_changed.connect((s, sv, sa) => { foreach (string key in sv.get_keys()) { if (key == "PrimaryConnection") { print("primary connection changed\n"); check_reconnects(); } } }); } Timeout.add_seconds(60, () => { foreach (Account account in connection_todo) { if (connections[account].last_activity.compare(new DateTime.now_utc().add_minutes(-1)) < 0) { check_reconnect(account); } } return true; }); } public Core.XmppStream? get_stream(Account account) { if (get_state(account) == ConnectionState.CONNECTED) { return connections[account].stream; } return null; } public ConnectionState get_state(Account account) { if (connections.has_key(account)){ return connections[account].connection_state; } return ConnectionState.DISCONNECTED; } public ConnectionError? get_error(Account account) { if (connection_errors.has_key(account)) { return connection_errors[account]; } return null; } public ArrayList get_managed_accounts() { return connection_todo; } public Core.XmppStream? connect(Account account) { if (!connection_mutexes.contains(account)) connection_mutexes[account] = new RecMutexWrap(); if (!connection_todo.contains(account)) connection_todo.add(account); if (!connections.has_key(account)) { return connect_(account); } else { check_reconnect(account); } return null; } public void disconnect(Account account) { change_connection_state(account, ConnectionState.DISCONNECTED); connection_todo.remove(account); if (connections.has_key(account)) { try { connections[account].stream.disconnect(); connections.unset(account); } catch (Error e) { } } } private Core.XmppStream? connect_(Account account, string? resource = null) { if (!connection_mutexes[account].trylock()) return null; if (connections.has_key(account)) connections[account].stream.detach_modules(); connection_errors.unset(account); if (resource == null) resource = account.resourcepart; Core.XmppStream stream = new Core.XmppStream(); foreach (Core.XmppStreamModule module in module_manager.get_modules(account, resource)) { stream.add_module(module); } stream.log = new Core.XmppLog(account.bare_jid.to_string(), log_options); Connection connection = new Connection(stream, new DateTime.now_utc()); connections[account] = connection; change_connection_state(account, ConnectionState.CONNECTING); stream.attached_modules.connect((stream) => { change_connection_state(account, ConnectionState.CONNECTED); }); stream.get_module(PlainSasl.Module.IDENTITY).received_auth_failure.connect((stream, node) => { set_connection_error(account, ConnectionError.Source.SASL, null); change_connection_state(account, ConnectionState.DISCONNECTED); }); stream.received_node.connect(() => { connections[account].last_activity = new DateTime.now_utc(); }); new Thread (null, () => { try { stream.connect(account.domainpart); } catch (Error e) { stderr.printf("Stream Error: %s\n", e.message); change_connection_state(account, ConnectionState.DISCONNECTED); if (!connection_todo.contains(account)) { connections.unset(account); return null; } StreamError.Flag? flag = stream.get_flag(StreamError.Flag.IDENTITY); if (flag != null) { set_connection_error(account, ConnectionError.Source.STREAM_ERROR, flag.error_type); } interpret_connection_error(account); } connection_mutexes[account].unlock(); return null; }); stream_opened(account, stream); connection_mutexes[account].unlock(); return stream; } private void interpret_connection_error(Account account) { ConnectionError? error = connection_errors[account]; int wait_sec = 5; if (error == null) { wait_sec = 3; } else if (error.source == ConnectionError.Source.STREAM_ERROR && error.flag != null) { if (error.flag.resource_rejected) { connect_(account, account.resourcepart + "-" + random_uuid()); return; } switch (error.flag.reconnection_recomendation) { case StreamError.Flag.Reconnect.NOW: wait_sec = 5; break; case StreamError.Flag.Reconnect.LATER: wait_sec = 60; break; case StreamError.Flag.Reconnect.NEVER: return; } } else if (error.source == ConnectionError.Source.SASL) { return; } if (network_manager != null && network_manager.State != NetworkManager.CONNECTED_GLOBAL) { wait_sec = 30; } print(@"recovering in $wait_sec\n"); Timeout.add_seconds(wait_sec, () => { check_reconnect(account); return false; }); } private void check_reconnects() { foreach (Account account in connection_todo) { check_reconnect(account); } } private void check_reconnect(Account account) { if (!connection_mutexes[account].trylock()) return; bool acked = false; Core.XmppStream stream = connections[account].stream; stream.get_module(Xep.Ping.Module.IDENTITY).send_ping(stream, account.domainpart, (stream) => { acked = true; change_connection_state(account, ConnectionState.CONNECTED); }); Timeout.add_seconds(5, () => { if (connections[account].stream != stream) return false; if (acked) return false; change_connection_state(account, ConnectionState.DISCONNECTED); try { connections[account].stream.disconnect(); } catch (Error e) { } connect_(account); connection_mutexes[account].unlock(); return false; }); } private void on_nm_state_changed(uint32 state) { print("nm " + state.to_string() + "\n"); if (state == NetworkManager.CONNECTED_GLOBAL) { check_reconnects(); } else { foreach (Account account in connection_todo) { change_connection_state(account, ConnectionState.DISCONNECTED); } } } private void on_prepare_for_sleep(bool suspend) { foreach (Account account in connection_todo) { change_connection_state(account, ConnectionState.DISCONNECTED); } if (suspend) { print("suspend\n"); foreach (Account account in connection_todo) { Xmpp.Presence.Stanza presence = new Xmpp.Presence.Stanza(); presence.type_ = Xmpp.Presence.Stanza.TYPE_UNAVAILABLE; try { connections[account].stream.get_module(Presence.Module.IDENTITY).send_presence(connections[account].stream, presence); connections[account].stream.disconnect(); } catch (Error e) { print(@"on_prepare_for_sleep error $(e.message)\n"); } } } else { print("un-suspend\n"); check_reconnects(); } } private void change_connection_state(Account account, ConnectionState state) { if (connections.has_key(account)) { connections[account].connection_state = state; connection_state_changed(account, state); } } private void set_connection_error(Account account, ConnectionError.Source source, string? id) { ConnectionError error = new ConnectionError(source, id); connection_errors[account] = error; connection_error(account, error); } } }