libempathy/gossip-chatroom-manager.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2004-2007 Imendio AB
   4  * Copyright (C) 2007 Collabora Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  *
  21  * Authors: Xavier Claessens <xclaesse@gmail.com>
  22  *          Martyn Russell <martyn@imendio.com>
  23  */
  24
  25 #include "config.h"
  26
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30
  31 #include <libxml/parser.h>
  32 #include <libxml/tree.h>
  33
  34 #include <libgnomevfs/gnome-vfs.h>
  35
  36 #include "gossip-debug.h"
  37 #include "gossip-chatroom-manager.h"
  38 #include "gossip-utils.h"
  39
  40 #define DEBUG_DOMAIN "ChatroomManager"
  41
  42 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GOSSIP_TYPE_CHATROOM_MANAGER, GossipChatroomManagerPriv))
  43
  44 #define CHATROOMS_XML_FILENAME "chatrooms.xml"
  45 #define CHATROOMS_DTD_FILENAME "gossip-chatroom-manager.dtd"
  46
  47 struct _GossipChatroomManagerPriv {
  48         GList      *chatrooms;
  49         GHashTable *monitors;
  50 };
  51
  52 static void     gossip_chatroom_manager_class_init (GossipChatroomManagerClass *klass);
  53 static void     gossip_chatroom_manager_init       (GossipChatroomManager      *manager);
  54 static void     chatroom_manager_finalize          (GObject                    *object);
  55 static gboolean chatroom_manager_get_all           (GossipChatroomManager      *manager);
  56 static void     chatroom_manager_file_changed_cb   (GnomeVFSMonitorHandle      *handle,
  57                                                     const gchar                *monitor_uri,
  58                                                     const gchar                *info_uri,
  59                                                     GnomeVFSMonitorEventType    event_type,
  60                                                     GossipChatroomManager      *manager);
  61 static gboolean chatroom_manager_file_parse        (GossipChatroomManager      *manager,
  62                                                     const gchar                *filename);
  63 static void     chatroom_manager_parse_chatroom    (GossipChatroomManager      *manager,
  64                                                     xmlNodePtr                  node);
  65 static gboolean chatroom_manager_file_save         (GossipChatroomManager      *manager);
  66
  67 enum {
  68         CHATROOM_ADDED,
  69         CHATROOM_REMOVED,
  70         LAST_SIGNAL
  71 };
  72
  73 static guint signals[LAST_SIGNAL];
  74
  75 G_DEFINE_TYPE (GossipChatroomManager, gossip_chatroom_manager, G_TYPE_OBJECT);
  76
  77 static void
  78 gossip_chatroom_manager_class_init (GossipChatroomManagerClass *klass)
  79 {
  80         GObjectClass *object_class = G_OBJECT_CLASS (klass);
  81
  82         object_class->finalize = chatroom_manager_finalize;
  83
  84         signals[CHATROOM_ADDED] =
  85                 g_signal_new ("chatroom-added",
  86                               G_TYPE_FROM_CLASS (klass),
  87                               G_SIGNAL_RUN_LAST,
  88                               0,
  89                               NULL, NULL,
  90                               g_cclosure_marshal_VOID__OBJECT,
  91                               G_TYPE_NONE,
  92                               1, GOSSIP_TYPE_CHATROOM);
  93         signals[CHATROOM_REMOVED] =
  94                 g_signal_new ("chatroom-removed",
  95                               G_TYPE_FROM_CLASS (klass),
  96                               G_SIGNAL_RUN_LAST,
  97                               0,
  98                               NULL, NULL,
  99                               g_cclosure_marshal_VOID__OBJECT,
 100                               G_TYPE_NONE,
 101                               1, GOSSIP_TYPE_CHATROOM);
 102
 103         g_type_class_add_private (object_class,
 104                                   sizeof (GossipChatroomManagerPriv));
 105 }
 106
 107 static void
 108 gossip_chatroom_manager_init (GossipChatroomManager *manager)
 109 {
 110         GossipChatroomManagerPriv *priv;
 111
 112         priv = GET_PRIV (manager);
 113
 114         priv->monitors = g_hash_table_new_full (g_str_hash,
 115                                                 g_str_equal,
 116                                                 (GDestroyNotify) g_free,
 117                                                 (GDestroyNotify) gnome_vfs_monitor_cancel);
 118 }
 119
 120 static void
 121 chatroom_manager_finalize (GObject *object)
 122 {
 123         GossipChatroomManagerPriv *priv;
 124
 125         priv = GET_PRIV (object);
 126
 127         g_list_foreach (priv->chatrooms, (GFunc) g_object_unref, NULL);
 128         g_list_free (priv->chatrooms);
 129         g_hash_table_destroy (priv->monitors);
 130
 131         (G_OBJECT_CLASS (gossip_chatroom_manager_parent_class)->finalize) (object);
 132 }
 133
 134 GossipChatroomManager *
 135 gossip_chatroom_manager_new (void)
 136 {
 137         static GossipChatroomManager *manager = NULL;
 138
 139         if (!manager) {
 140                 GossipChatroomManagerPriv *priv;
 141
 142                 manager = g_object_new (GOSSIP_TYPE_CHATROOM_MANAGER, NULL);
 143                 priv = GET_PRIV (manager);
 144                 chatroom_manager_get_all (manager);
 145
 146                 g_object_add_weak_pointer (G_OBJECT (manager), (gpointer) &manager);
 147         } else {
 148                 g_object_ref (manager);
 149         }
 150
 151         return manager;
 152 }
 153
 154 gboolean
 155 gossip_chatroom_manager_add (GossipChatroomManager *manager,
 156                              GossipChatroom        *chatroom)
 157 {
 158         GossipChatroomManagerPriv *priv;
 159
 160         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), FALSE);
 161         g_return_val_if_fail (GOSSIP_IS_CHATROOM (chatroom), FALSE);
 162
 163         priv = GET_PRIV (manager);
 164
 165         /* don't add more than once */
 166         if (!gossip_chatroom_manager_find (manager,
 167                                            gossip_chatroom_get_account (chatroom),
 168                                            gossip_chatroom_get_room (chatroom))) {
 169                 priv->chatrooms = g_list_prepend (priv->chatrooms, g_object_ref (chatroom));
 170                 chatroom_manager_file_save (manager);
 171
 172                 g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 173
 174                 return TRUE;
 175         }
 176
 177         return FALSE;
 178 }
 179
 180 void
 181 gossip_chatroom_manager_remove (GossipChatroomManager *manager,
 182                                 GossipChatroom        *chatroom)
 183 {
 184         GossipChatroomManagerPriv *priv;
 185         GList                     *l;
 186
 187         g_return_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager));
 188         g_return_if_fail (GOSSIP_IS_CHATROOM (chatroom));
 189
 190         priv = GET_PRIV (manager);
 191
 192         for (l = priv->chatrooms; l; l = l->next) {
 193                 GossipChatroom *this_chatroom;
 194
 195                 this_chatroom = l->data;
 196
 197                 if (gossip_chatroom_equal (chatroom, this_chatroom)) {
 198                         priv->chatrooms = g_list_delete_link (priv->chatrooms, l);
 199
 200                         chatroom_manager_file_save (manager);
 201
 202                         g_signal_emit (manager, signals[CHATROOM_REMOVED], 0, this_chatroom);
 203                         g_object_unref (this_chatroom);
 204                         break;
 205                 }
 206         }
 207 }
 208
 209 GossipChatroom *
 210 gossip_chatroom_manager_find (GossipChatroomManager *manager,
 211                               McAccount             *account,
 212                               const gchar           *room)
 213 {
 214         GossipChatroomManagerPriv *priv;
 215         GList                     *l;
 216
 217         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), NULL);
 218         g_return_val_if_fail (MC_IS_ACCOUNT (account), NULL);
 219         g_return_val_if_fail (room != NULL, NULL);
 220
 221         priv = GET_PRIV (manager);
 222
 223         for (l = priv->chatrooms; l; l = l->next) {
 224                 GossipChatroom *chatroom;
 225                 McAccount      *this_account;
 226                 const gchar    *this_room;
 227
 228                 chatroom = l->data;
 229                 this_account = gossip_chatroom_get_account (chatroom);
 230                 this_room = gossip_chatroom_get_room (chatroom);
 231
 232                 if (this_account && this_room &&
 233                     gossip_account_equal (account, this_account) &&
 234                     strcmp (this_room, room) == 0) {
 235                         return chatroom;
 236                 }
 237         }
 238
 239         return NULL;
 240 }
 241
 242 GList *
 243 gossip_chatroom_manager_get_chatrooms (GossipChatroomManager *manager,
 244                                        McAccount             *account)
 245 {
 246         GossipChatroomManagerPriv *priv;
 247         GList                     *chatrooms, *l;
 248
 249         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), NULL);
 250
 251         priv = GET_PRIV (manager);
 252
 253         if (!account) {
 254                 return g_list_copy (priv->chatrooms);
 255         }
 256
 257         chatrooms = NULL;
 258         for (l = priv->chatrooms; l; l = l->next) {
 259                 GossipChatroom *chatroom;
 260
 261                 chatroom = l->data;
 262
 263                 if (gossip_account_equal (account,
 264                                           gossip_chatroom_get_account (chatroom))) {
 265                         chatrooms = g_list_append (chatrooms, chatroom);
 266                 }
 267         }
 268
 269         return chatrooms;
 270 }
 271
 272 guint
 273 gossip_chatroom_manager_get_count (GossipChatroomManager *manager,
 274                                    McAccount             *account)
 275 {
 276         GossipChatroomManagerPriv *priv;
 277         GList                     *l;
 278         guint                      count = 0;
 279
 280         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), 0);
 281
 282         priv = GET_PRIV (manager);
 283
 284         if (!account) {
 285                 return g_list_length (priv->chatrooms);
 286         }
 287
 288         for (l = priv->chatrooms; l; l = l->next) {
 289                 GossipChatroom *chatroom;
 290
 291                 chatroom = l->data;
 292
 293                 if (gossip_account_equal (account,
 294                                           gossip_chatroom_get_account (chatroom))) {
 295                         count++;
 296                 }
 297         }
 298
 299         return count;
 300 }
 301
 302 void
 303 gossip_chatroom_manager_store (GossipChatroomManager *manager)
 304 {
 305         g_return_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager));
 306
 307         chatroom_manager_file_save (manager);
 308 }
 309
 310 /*
 311  * API to save/load and parse the chatrooms file.
 312  */
 313
 314 static gboolean
 315 chatroom_manager_get_all (GossipChatroomManager *manager)
 316 {
 317         GossipChatroomManagerPriv *priv;
 318         gchar                     *dir;
 319         gchar                     *file_with_path = NULL;
 320
 321         priv = GET_PRIV (manager);
 322
 323         dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
 324         if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
 325                 g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 326         }
 327
 328         file_with_path = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 329         g_free (dir);
 330
 331         /* read file in */
 332         if (g_file_test (file_with_path, G_FILE_TEST_EXISTS) &&
 333             !chatroom_manager_file_parse (manager, file_with_path)) {
 334                 g_free (file_with_path);
 335                 return FALSE;
 336         }
 337
 338         g_free (file_with_path);
 339
 340         return TRUE;
 341 }
 342
 343 static void
 344 chatroom_manager_file_changed_cb (GnomeVFSMonitorHandle    *handle,
 345                                   const gchar              *monitor_uri,
 346                                   const gchar              *info_uri,
 347                                   GnomeVFSMonitorEventType  event_type,
 348                                   GossipChatroomManager    *manager)
 349 {
 350         GossipChatroomManagerPriv *priv;
 351         GList                     *l;
 352
 353         priv = GET_PRIV (manager);
 354
 355         gossip_debug (DEBUG_DOMAIN, "Reload file: %s", monitor_uri);
 356
 357         /* FIXME: This is not optimised */
 358         for (l = priv->chatrooms; l; l = l->next) {
 359                 g_signal_emit (manager, signals[CHATROOM_REMOVED], 0, l->data);
 360                 g_object_unref (l->data);
 361         }
 362         g_list_free (priv->chatrooms);
 363         priv->chatrooms = NULL;
 364
 365         chatroom_manager_get_all (manager);
 366 }
 367
 368 static gboolean
 369 chatroom_manager_file_parse (GossipChatroomManager *manager,
 370                              const gchar           *filename)
 371 {
 372         GossipChatroomManagerPriv *priv;
 373         xmlParserCtxtPtr           ctxt;
 374         xmlDocPtr                  doc;
 375         xmlNodePtr                 chatrooms;
 376         xmlNodePtr                 node;
 377
 378         priv = GET_PRIV (manager);
 379
 380         /* Do not monitor this file twice if it's already monitored */
 381         if (!g_hash_table_lookup (priv->monitors, filename)) {
 382                 GnomeVFSMonitorHandle *handle;
 383
 384                 gnome_vfs_monitor_add (&handle,
 385                                        filename,
 386                                        GNOME_VFS_MONITOR_FILE,
 387                                        (GnomeVFSMonitorCallback) chatroom_manager_file_changed_cb,
 388                                        manager);
 389
 390                 g_hash_table_insert (priv->monitors, g_strdup (filename), handle);
 391         }
 392
 393         gossip_debug (DEBUG_DOMAIN, "Attempting to parse file:'%s'...", filename);
 394
 395         ctxt = xmlNewParserCtxt ();
 396
 397         /* Parse and validate the file. */
 398         doc = xmlCtxtReadFile (ctxt, filename, NULL, 0);
 399         if (!doc) {
 400                 g_warning ("Failed to parse file:'%s'", filename);
 401                 xmlFreeParserCtxt (ctxt);
 402                 return FALSE;
 403         }
 404
 405         if (!gossip_xml_validate (doc, CHATROOMS_DTD_FILENAME)) {
 406                 g_warning ("Failed to validate file:'%s'", filename);
 407                 xmlFreeDoc(doc);
 408                 xmlFreeParserCtxt (ctxt);
 409                 return FALSE;
 410         }
 411
 412         /* The root node, chatrooms. */
 413         chatrooms = xmlDocGetRootElement (doc);
 414
 415         for (node = chatrooms->children; node; node = node->next) {
 416                 if (strcmp ((gchar *) node->name, "chatroom") == 0) {
 417                         chatroom_manager_parse_chatroom (manager, node);
 418                 }
 419         }
 420
 421         gossip_debug (DEBUG_DOMAIN,
 422                       "Parsed %d chatrooms",
 423                       g_list_length (priv->chatrooms));
 424
 425         xmlFreeDoc(doc);
 426         xmlFreeParserCtxt (ctxt);
 427
 428         return TRUE;
 429 }
 430
 431 static void
 432 chatroom_manager_parse_chatroom (GossipChatroomManager *manager,
 433                                  xmlNodePtr             node)
 434 {
 435         GossipChatroomManagerPriv *priv;
 436         GossipChatroom            *chatroom;
 437         McAccount                 *account;
 438         xmlNodePtr                 child;
 439         gchar                     *str;
 440         gchar                     *name;
 441         gchar                     *room;
 442         gchar                     *account_id;
 443         gboolean                   auto_connect;
 444
 445         priv = GET_PRIV (manager);
 446
 447         /* default values. */
 448         name = NULL;
 449         room = NULL;
 450         auto_connect = TRUE;
 451         account_id = NULL;
 452
 453         for (child = node->children; child; child = child->next) {
 454                 gchar *tag;
 455
 456                 if (xmlNodeIsText (child)) {
 457                         continue;
 458                 }
 459
 460                 tag = (gchar *) child->name;
 461                 str = (gchar *) xmlNodeGetContent (child);
 462
 463                 if (strcmp (tag, "name") == 0) {
 464                         name = g_strdup (str);
 465                 }
 466                 else if (strcmp (tag, "room") == 0) {
 467                         room = g_strdup (str);
 468                 }
 469                 else if (strcmp (tag, "auto_connect") == 0) {
 470                         if (strcmp (str, "yes") == 0) {
 471                                 auto_connect = TRUE;
 472                         } else {
 473                                 auto_connect = FALSE;
 474                         }
 475                 }
 476                 else if (strcmp (tag, "account") == 0) {
 477                         account_id = g_strdup (str);
 478                 }
 479
 480                 xmlFree (str);
 481         }
 482
 483         account = mc_account_lookup (account_id);
 484         if (!account) {
 485                 g_free (name);
 486                 g_free (room);
 487                 g_free (account_id);
 488                 return;
 489         }
 490
 491         chatroom = gossip_chatroom_new_full (account, room, name, auto_connect);
 492         priv->chatrooms = g_list_prepend (priv->chatrooms, chatroom);
 493         g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 494
 495         g_object_unref (account);
 496         g_free (name);
 497         g_free (room);
 498         g_free (account_id);
 499 }
 500
 501 static gboolean
 502 chatroom_manager_file_save (GossipChatroomManager *manager)
 503 {
 504         GossipChatroomManagerPriv *priv;
 505         xmlDocPtr                  doc;
 506         xmlNodePtr                 root;
 507         GList                     *l;
 508         gchar                     *dir;
 509         gchar                     *file;
 510
 511         priv = GET_PRIV (manager);
 512
 513         dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
 514         if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
 515                 g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 516         }
 517
 518         file = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 519         g_free (dir);
 520
 521         doc = xmlNewDoc ("1.0");
 522         root = xmlNewNode (NULL, "chatrooms");
 523         xmlDocSetRootElement (doc, root);
 524
 525         for (l = priv->chatrooms; l; l = l->next) {
 526                 GossipChatroom *chatroom;
 527                 xmlNodePtr      node;
 528                 const gchar    *account_id;
 529
 530                 chatroom = l->data;
 531                 account_id = mc_account_get_unique_name (gossip_chatroom_get_account (chatroom));
 532
 533                 node = xmlNewChild (root, NULL, "chatroom", NULL);
 534                 xmlNewTextChild (node, NULL, "name", gossip_chatroom_get_name (chatroom));
 535                 xmlNewTextChild (node, NULL, "room", gossip_chatroom_get_room (chatroom));
 536                 xmlNewTextChild (node, NULL, "account", account_id);
 537                 xmlNewTextChild (node, NULL, "auto_connect", gossip_chatroom_get_auto_connect (chatroom) ? "yes" : "no");
 538         }
 539
 540         /* Make sure the XML is indented properly */
 541         xmlIndentTreeOutput = 1;
 542
 543         gossip_debug (DEBUG_DOMAIN, "Saving file:'%s'", file);
 544         xmlSaveFormatFileEnc (file, doc, "utf-8", 1);
 545         xmlFreeDoc (doc);
 546
 547         xmlCleanupParser ();
 548         xmlMemoryDump ();
 549
 550         g_free (file);
 551
 552         return TRUE;
 553 }