src/daemon/plugins/plugind/gsignond-plugin-daemon.c

   1 /* vi: set et sw=4 ts=4 cino=t0,(0: */
   2 /* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   3 /*
   4  * This file is part of gsignond
   5  *
   6  * Copyright (C) 2013 Intel Corporation.
   7  *
   8  * Contact: Imran Zaman <imran.zaman@intel.com>
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  23  * 02110-1301 USA
  24  */
  25
  26 #include "gsignond/gsignond-plugin-interface.h"
  27 #include "gsignond/gsignond-log.h"
  28 #include "gsignond/gsignond-error.h"
  29 #include "common/gsignond-plugin-loader.h"
  30 #include "common/gsignond-pipe-stream.h"
  31 #include "daemon/dbus/gsignond-dbus-remote-plugin-gen.h"
  32 #include "daemon/dbus/gsignond-dbus.h"
  33 #include "gsignond-plugin-daemon.h"
  34
  35 struct _GSignondPluginDaemonPrivate
  36 {
  37     GDBusConnection   *connection;
  38     GSignondDbusRemotePlugin *dbus_remote_plugin;
  39     GSignondPlugin *plugin;
  40     gchar *plugin_type;
  41 };
  42
  43 G_DEFINE_TYPE (GSignondPluginDaemon, gsignond_plugin_daemon, G_TYPE_OBJECT)
  44
  45
  46 #define GSIGNOND_PLUGIN_DAEMON_GET_PRIV(obj) \
  47     G_TYPE_INSTANCE_GET_PRIVATE ((obj), GSIGNOND_TYPE_PLUGIN_DAEMON,\
  48             GSignondPluginDaemonPrivate)
  49
  50 static void
  51 _dispose (GObject *object)
  52 {
  53     GSignondPluginDaemon *self = GSIGNOND_PLUGIN_DAEMON (object);
  54
  55     if (self->priv->dbus_remote_plugin) {
  56         g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (
  57                 self->priv->dbus_remote_plugin));
  58         g_object_unref (self->priv->dbus_remote_plugin);
  59         self->priv->dbus_remote_plugin = NULL;
  60     }
  61
  62     if (self->priv->connection) {
  63         g_object_unref (self->priv->connection);
  64         self->priv->connection = NULL;
  65     }
  66
  67     if (self->priv->plugin) {
  68         g_object_unref (self->priv->plugin);
  69         self->priv->plugin = NULL;
  70     }
  71
  72     G_OBJECT_CLASS (gsignond_plugin_daemon_parent_class)->dispose (object);
  73 }
  74
  75 static void
  76 _finalize (GObject *object)
  77 {
  78     GSignondPluginDaemon *self = GSIGNOND_PLUGIN_DAEMON (object);
  79
  80     if (self->priv->plugin_type) {
  81         g_free (self->priv->plugin_type);
  82         self->priv->plugin_type = NULL;
  83     }
  84
  85     G_OBJECT_CLASS (gsignond_plugin_daemon_parent_class)->finalize (object);
  86 }
  87
  88 static void
  89 gsignond_plugin_daemon_class_init (
  90         GSignondPluginDaemonClass *klass)
  91 {
  92     GObjectClass* object_class = G_OBJECT_CLASS (klass);
  93
  94     g_type_class_add_private (object_class, sizeof (
  95             GSignondPluginDaemonPrivate));
  96
  97     object_class->dispose = _dispose;
  98     object_class->finalize = _finalize;
  99
 100 }
 101
 102 static void
 103 gsignond_plugin_daemon_init (
 104         GSignondPluginDaemon *self)
 105 {
 106     self->priv = GSIGNOND_PLUGIN_DAEMON_GET_PRIV(self);
 107     self->priv->connection = NULL;
 108     self->priv->dbus_remote_plugin = NULL;
 109     self->priv->plugin_type = NULL;
 110     self->priv->plugin = NULL;
 111 }
 112
 113 static void
 114 _on_connection_closed (
 115         GDBusConnection *connection,
 116         gboolean         remote_peer_vanished,
 117         GError          *error,
 118         gpointer         user_data)
 119 {
 120     GSignondPluginDaemon *daemon = GSIGNOND_PLUGIN_DAEMON (user_data);
 121
 122     g_signal_handlers_disconnect_by_func (connection, _on_connection_closed,
 123             user_data);
 124     DBG("dbus connection(%p) closed (peer vanished : %d)", connection,
 125             remote_peer_vanished);
 126     if (error) {
 127        DBG("...reason : %s", error->message);
 128     }
 129     g_object_unref (daemon);
 130 }
 131
 132 static gboolean
 133 _handle_cancel_from_dbus (
 134         GSignondPluginDaemon *self,
 135         GDBusMethodInvocation *invocation,
 136         gpointer user_data)
 137 {
 138     DBG ("");
 139     g_return_val_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self), FALSE);
 140     gsignond_dbus_remote_plugin_complete_cancel (self->priv->dbus_remote_plugin,
 141             invocation);
 142
 143     gsignond_plugin_cancel (self->priv->plugin);
 144     return TRUE;
 145 }
 146
 147 static gboolean
 148 _handle_request_from_dbus (
 149         GSignondPluginDaemon *self,
 150         GDBusMethodInvocation *invocation,
 151         const GVariant *session_data,
 152         gpointer user_data)
 153 {
 154     DBG ("");
 155     g_return_val_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self), FALSE);
 156
 157     gsignond_dbus_remote_plugin_complete_request (
 158             self->priv->dbus_remote_plugin, invocation);
 159
 160     GSignondSessionData *data = (GSignondSessionData *)
 161             gsignond_dictionary_new_from_variant ((GVariant *)session_data);
 162     gsignond_plugin_request (self->priv->plugin, data);
 163     gsignond_dictionary_unref (data);
 164     return TRUE;
 165 }
 166
 167 static void
 168 _handle_response_final_from_plugin (
 169         GSignondPluginDaemon *self,
 170         GSignondSessionData *session_data,
 171         gpointer user_data);
 172
 173 static gboolean
 174 _handle_request_initial_from_dbus (
 175         GSignondPluginDaemon *self,
 176         GDBusMethodInvocation *invocation,
 177         const GVariant *session_data,
 178         const gchar *mechanism,
 179         gpointer user_data)
 180 {
 181     DBG ("");
 182     g_return_val_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self), FALSE);
 183
 184     gsignond_dbus_remote_plugin_complete_request_initial (
 185             self->priv->dbus_remote_plugin, invocation);
 186
 187     GSignondSessionData *data = (GSignondSessionData *)
 188             gsignond_dictionary_new_from_variant ((GVariant *)session_data);
 189     gsignond_plugin_request_initial (self->priv->plugin, data, mechanism);
 190     gsignond_dictionary_unref (data);
 191
 192     return TRUE;
 193 }
 194
 195 static gboolean
 196 _handle_user_action_finished_from_dbus (
 197         GSignondPluginDaemon *self,
 198         GDBusMethodInvocation *invocation,
 199         const GVariant *ui_data,
 200         gpointer user_data)
 201 {
 202     DBG ("");
 203     g_return_val_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self), FALSE);
 204
 205     gsignond_dbus_remote_plugin_complete_user_action_finished (
 206             self->priv->dbus_remote_plugin, invocation);
 207
 208     GSignondSignonuiData *data = (GSignondSignonuiData *)
 209             gsignond_signonui_data_new_from_variant ((GVariant *)ui_data);
 210     gsignond_plugin_user_action_finished (self->priv->plugin, data);
 211     gsignond_signonui_data_unref (data);
 212     return TRUE;
 213 }
 214
 215 static gboolean
 216 _handle_refresh_from_dbus (
 217         GSignondPluginDaemon *self,
 218         GDBusMethodInvocation *invocation,
 219         const GVariant *ui_data,
 220         gpointer user_data)
 221 {
 222     DBG ("");
 223     g_return_val_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self), FALSE);
 224
 225     gsignond_dbus_remote_plugin_complete_refresh (
 226             self->priv->dbus_remote_plugin, invocation);
 227
 228     GSignondSignonuiData *data = (GSignondSignonuiData *)
 229             gsignond_signonui_data_new_from_variant ((GVariant *)ui_data);
 230     gsignond_plugin_refresh (self->priv->plugin, data);
 231     gsignond_signonui_data_unref (data);
 232     return TRUE;
 233 }
 234
 235 static gboolean
 236 _handle_get_info_from_dbus (
 237         GSignondPluginDaemon *self,
 238         GDBusMethodInvocation *invocation,
 239         gpointer user_data)
 240 {
 241     DBG ("");
 242     g_return_val_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self), FALSE);
 243     gchar *type = NULL;
 244     gchar **mechanisms = NULL;
 245
 246     g_object_get (self->priv->plugin, "type", &type, "mechanisms", &mechanisms,
 247             NULL);
 248     gsignond_dbus_remote_plugin_complete_get_info (
 249             self->priv->dbus_remote_plugin, invocation, (const gchar*)type,
 250             (const gchar *const *)mechanisms);
 251     g_free (type);
 252     g_strfreev (mechanisms);
 253     return TRUE;
 254 }
 255
 256 static void
 257 _handle_response_from_plugin (
 258         GSignondPluginDaemon *self,
 259         GSignondSessionData *session_data,
 260         gpointer user_data)
 261 {
 262     DBG ("");
 263     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 264
 265     GVariant *data = gsignond_dictionary_to_variant (
 266             (GSignondDictionary *)session_data);
 267     gsignond_dbus_remote_plugin_emit_response (self->priv->dbus_remote_plugin,
 268             data);
 269 }
 270
 271 static void
 272 _handle_response_final_from_plugin (
 273         GSignondPluginDaemon *self,
 274         GSignondSessionData *session_data,
 275         gpointer user_data)
 276 {
 277     DBG ("");
 278     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 279
 280     GVariant *data = gsignond_dictionary_to_variant (
 281             (GSignondDictionary *)session_data);
 282     gsignond_dbus_remote_plugin_emit_response_final (
 283             self->priv->dbus_remote_plugin, data);
 284 }
 285
 286 static void
 287 _handle_store_from_plugin (
 288         GSignondPluginDaemon *self,
 289         GSignondSessionData *session_data,
 290         gpointer user_data)
 291 {
 292     DBG ("");
 293     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 294
 295     GVariant *data = gsignond_dictionary_to_variant (
 296             (GSignondDictionary *)session_data);
 297     gsignond_dbus_remote_plugin_emit_store (self->priv->dbus_remote_plugin,
 298             data);
 299 }
 300
 301 static void
 302 _handle_error_from_plugin (
 303         GSignondPluginDaemon *self,
 304         GError *gerror,
 305         gpointer user_data)
 306 {
 307     DBG ("");
 308     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 309
 310     GVariant *error = gsignond_error_to_variant (gerror);
 311     gsignond_dbus_remote_plugin_emit_error (self->priv->dbus_remote_plugin,
 312             error);
 313 }
 314
 315 static void
 316 _handle_user_action_required_from_plugin (
 317         GSignondPluginDaemon *self,
 318         GSignondSignonuiData *ui_data,
 319         gpointer user_data)
 320 {
 321     DBG ("");
 322     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 323
 324     GVariant *data = gsignond_signonui_data_to_variant (ui_data);
 325     gsignond_dbus_remote_plugin_emit_user_action_required (
 326             self->priv->dbus_remote_plugin, data);
 327 }
 328
 329 static void
 330 _handle_refreshed_from_plugin(
 331         GSignondPluginDaemon *self,
 332         GSignondSignonuiData *ui_data,
 333         gpointer user_data)
 334 {
 335     DBG ("");
 336     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 337
 338     GVariant *data = gsignond_signonui_data_to_variant (ui_data);
 339     gsignond_dbus_remote_plugin_emit_refreshed (self->priv->dbus_remote_plugin,
 340             data);
 341 }
 342
 343 static void
 344 _handle_status_changed_from_plugin (
 345         GSignondPluginDaemon *self,
 346         GSignondPluginState status,
 347         gchar *message,
 348         gpointer user_data)
 349 {
 350     DBG ("");
 351     g_return_if_fail (self && GSIGNOND_IS_PLUGIN_DAEMON (self));
 352
 353     gsignond_dbus_remote_plugin_emit_status_changed (
 354             self->priv->dbus_remote_plugin, (gint)status,
 355             (const gchar *)message);
 356 }
 357
 358 GSignondPluginDaemon *
 359 gsignond_plugin_daemon_new (
 360         const gchar* filename,
 361         const gchar* plugin_type,
 362         gint in_fd,
 363         gint out_fd)
 364 {
 365     GError *error = NULL;
 366     GSignondPipeStream *stream = NULL;
 367
 368     g_return_val_if_fail (filename != NULL && plugin_type != NULL, NULL);
 369
 370     GSignondPluginDaemon *daemon = GSIGNOND_PLUGIN_DAEMON (g_object_new (
 371             GSIGNOND_TYPE_PLUGIN_DAEMON, NULL));
 372
 373     /* Load plugin */
 374     daemon->priv->plugin = gsignond_load_plugin_with_filename (
 375             (gchar *)plugin_type, (gchar *)filename);
 376     if (!daemon->priv->plugin) {
 377         DBG ("failed to load plugin");
 378         g_object_unref (daemon);
 379         return NULL;
 380     }
 381
 382     daemon->priv->plugin_type = g_strdup (plugin_type);
 383
 384     /* Create dbus connection */
 385     stream = gsignond_pipe_stream_new (in_fd, out_fd, TRUE);
 386     daemon->priv->connection = g_dbus_connection_new_sync (G_IO_STREAM (stream),
 387             NULL, G_DBUS_CONNECTION_FLAGS_DELAY_MESSAGE_PROCESSING, NULL, NULL,
 388             NULL);
 389     g_object_unref (stream);
 390
 391     /* Create dbus object */
 392     daemon->priv->dbus_remote_plugin =
 393             gsignond_dbus_remote_plugin_skeleton_new ();
 394
 395     g_dbus_interface_skeleton_export (
 396                 G_DBUS_INTERFACE_SKELETON(daemon->priv->dbus_remote_plugin),
 397                 daemon->priv->connection, GSIGNOND_PLUGIN_OBJECTPATH, &error);
 398     if (error) {
 399         DBG ("failed to register object: %s", error->message);
 400         g_error_free (error);
 401         g_object_unref (daemon);
 402         return NULL;
 403     }
 404     DBG("Started plugin daemon '%p' at path '%s' on conneciton '%p'",
 405             daemon, GSIGNOND_PLUGIN_OBJECTPATH, daemon->priv->connection);
 406
 407     /* Connect dbus remote plugin signals to handlers */
 408     g_signal_connect_swapped (daemon->priv->dbus_remote_plugin,
 409             "handle-cancel", G_CALLBACK (_handle_cancel_from_dbus), daemon);
 410     g_signal_connect_swapped (daemon->priv->dbus_remote_plugin,
 411             "handle-request", G_CALLBACK(_handle_request_from_dbus), daemon);
 412     g_signal_connect_swapped (daemon->priv->dbus_remote_plugin,
 413             "handle-request-initial",
 414             G_CALLBACK(_handle_request_initial_from_dbus), daemon);
 415     g_signal_connect_swapped (daemon->priv->dbus_remote_plugin,
 416             "handle-user-action-finished",
 417             G_CALLBACK(_handle_user_action_finished_from_dbus), daemon);
 418     g_signal_connect_swapped (daemon->priv->dbus_remote_plugin,
 419             "handle-refresh", G_CALLBACK(_handle_refresh_from_dbus), daemon);
 420     g_signal_connect_swapped (daemon->priv->dbus_remote_plugin,
 421             "handle-get-info", G_CALLBACK(_handle_get_info_from_dbus), daemon);
 422
 423     /* Connect plugin signals to handlers */
 424     g_signal_connect_swapped (daemon->priv->plugin, "response",
 425             G_CALLBACK (_handle_response_from_plugin), daemon);
 426     g_signal_connect_swapped (daemon->priv->plugin, "response-final",
 427             G_CALLBACK(_handle_response_final_from_plugin), daemon);
 428     g_signal_connect_swapped (daemon->priv->plugin, "store",
 429             G_CALLBACK(_handle_store_from_plugin), daemon);
 430     g_signal_connect_swapped (daemon->priv->plugin, "error",
 431             G_CALLBACK(_handle_error_from_plugin), daemon);
 432     g_signal_connect_swapped (daemon->priv->plugin, "user-action-required",
 433             G_CALLBACK(_handle_user_action_required_from_plugin), daemon);
 434     g_signal_connect_swapped (daemon->priv->plugin, "refreshed",
 435             G_CALLBACK(_handle_refreshed_from_plugin), daemon);
 436     g_signal_connect_swapped (daemon->priv->plugin, "status-changed",
 437             G_CALLBACK(_handle_status_changed_from_plugin), daemon);
 438
 439     g_signal_connect (daemon->priv->connection, "closed",
 440             G_CALLBACK(_on_connection_closed), daemon);
 441
 442     g_dbus_connection_start_message_processing (daemon->priv->connection);
 443
 444     return daemon;
 445 }
 446