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 "gossip-debug.h"
  35 #include "gossip-chatroom-manager.h"
  36 #include "gossip-utils.h"
  37
  38 #define DEBUG_DOMAIN "ChatroomManager"
  39
  40 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GOSSIP_TYPE_CHATROOM_MANAGER, GossipChatroomManagerPriv))
  41
  42 #define CHATROOMS_XML_FILENAME "chatrooms.xml"
  43 #define CHATROOMS_DTD_FILENAME "gossip-chatroom-manager.dtd"
  44
  45 struct _GossipChatroomManagerPriv {
  46         GList *chatrooms;
  47 };
  48
  49 static void     gossip_chatroom_manager_class_init (GossipChatroomManagerClass *klass);
  50 static void     gossip_chatroom_manager_init       (GossipChatroomManager      *manager);
  51 static void     chatroom_manager_finalize          (GObject                    *object);
  52 static gboolean chatroom_manager_get_all           (GossipChatroomManager      *manager);
  53 static gboolean chatroom_manager_file_parse        (GossipChatroomManager      *manager,
  54                                                     const gchar                *filename);
  55 static void     chatroom_manager_parse_chatroom    (GossipChatroomManager      *manager,
  56                                                     xmlNodePtr                  node);
  57 static gboolean chatroom_manager_file_save         (GossipChatroomManager      *manager);
  58
  59 enum {
  60         CHATROOM_ADDED,
  61         CHATROOM_REMOVED,
  62         LAST_SIGNAL
  63 };
  64
  65 static guint signals[LAST_SIGNAL];
  66
  67 G_DEFINE_TYPE (GossipChatroomManager, gossip_chatroom_manager, G_TYPE_OBJECT);
  68
  69 static void
  70 gossip_chatroom_manager_class_init (GossipChatroomManagerClass *klass)
  71 {
  72         GObjectClass *object_class = G_OBJECT_CLASS (klass);
  73
  74         object_class->finalize = chatroom_manager_finalize;
  75
  76         signals[CHATROOM_ADDED] =
  77                 g_signal_new ("chatroom-added",
  78                               G_TYPE_FROM_CLASS (klass),
  79                               G_SIGNAL_RUN_LAST,
  80                               0,
  81                               NULL, NULL,
  82                               g_cclosure_marshal_VOID__OBJECT,
  83                               G_TYPE_NONE,
  84                               1, GOSSIP_TYPE_CHATROOM);
  85         signals[CHATROOM_REMOVED] =
  86                 g_signal_new ("chatroom-removed",
  87                               G_TYPE_FROM_CLASS (klass),
  88                               G_SIGNAL_RUN_LAST,
  89                               0,
  90                               NULL, NULL,
  91                               g_cclosure_marshal_VOID__OBJECT,
  92                               G_TYPE_NONE,
  93                               1, GOSSIP_TYPE_CHATROOM);
  94
  95         g_type_class_add_private (object_class,
  96                                   sizeof (GossipChatroomManagerPriv));
  97 }
  98
  99 static void
 100 gossip_chatroom_manager_init (GossipChatroomManager *manager)
 101 {
 102 }
 103
 104 static void
 105 chatroom_manager_finalize (GObject *object)
 106 {
 107         GossipChatroomManagerPriv *priv;
 108
 109         priv = GET_PRIV (object);
 110
 111         g_list_foreach (priv->chatrooms, (GFunc) g_object_unref, NULL);
 112         g_list_free (priv->chatrooms);
 113
 114         (G_OBJECT_CLASS (gossip_chatroom_manager_parent_class)->finalize) (object);
 115 }
 116
 117 GossipChatroomManager *
 118 gossip_chatroom_manager_new (void)
 119 {
 120         static GossipChatroomManager *manager = NULL;
 121
 122         if (!manager) {
 123                 GossipChatroomManagerPriv *priv;
 124
 125                 manager = g_object_new (GOSSIP_TYPE_CHATROOM_MANAGER, NULL);
 126                 priv = GET_PRIV (manager);
 127                 chatroom_manager_get_all (manager);
 128
 129                 g_object_add_weak_pointer (G_OBJECT (manager), (gpointer) &manager);
 130         } else {
 131                 g_object_ref (manager);
 132         }
 133
 134         return manager;
 135 }
 136
 137 gboolean
 138 gossip_chatroom_manager_add (GossipChatroomManager *manager,
 139                              GossipChatroom        *chatroom)
 140 {
 141         GossipChatroomManagerPriv *priv;
 142
 143         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), FALSE);
 144         g_return_val_if_fail (GOSSIP_IS_CHATROOM (chatroom), FALSE);
 145
 146         priv = GET_PRIV (manager);
 147
 148         /* don't add more than once */
 149         if (!gossip_chatroom_manager_find (manager,
 150                                            gossip_chatroom_get_account (chatroom),
 151                                            gossip_chatroom_get_room (chatroom))) {
 152                 priv->chatrooms = g_list_append (priv->chatrooms, g_object_ref (chatroom));
 153                 chatroom_manager_file_save (manager);
 154
 155                 g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 156
 157                 return TRUE;
 158         }
 159
 160         return FALSE;
 161 }
 162
 163 void
 164 gossip_chatroom_manager_remove (GossipChatroomManager *manager,
 165                                 GossipChatroom        *chatroom)
 166 {
 167         GossipChatroomManagerPriv *priv;
 168         GList                     *l;
 169
 170         g_return_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager));
 171         g_return_if_fail (GOSSIP_IS_CHATROOM (chatroom));
 172
 173         priv = GET_PRIV (manager);
 174
 175         for (l = priv->chatrooms; l; l = l->next) {
 176                 GossipChatroom *this_chatroom;
 177
 178                 this_chatroom = l->data;
 179
 180                 if (gossip_chatroom_equal (chatroom, this_chatroom)) {
 181                         priv->chatrooms = g_list_delete_link (priv->chatrooms, l);
 182
 183                         chatroom_manager_file_save (manager);
 184
 185                         g_signal_emit (manager, signals[CHATROOM_REMOVED], 0, this_chatroom);
 186                         g_object_unref (this_chatroom);
 187                         break;
 188                 }
 189         }
 190 }
 191
 192 GossipChatroom *
 193 gossip_chatroom_manager_find (GossipChatroomManager *manager,
 194                               McAccount             *account,
 195                               const gchar           *room)
 196 {
 197         GossipChatroomManagerPriv *priv;
 198         GList                     *l;
 199
 200         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), NULL);
 201         g_return_val_if_fail (MC_IS_ACCOUNT (account), NULL);
 202         g_return_val_if_fail (room != NULL, NULL);
 203
 204         priv = GET_PRIV (manager);
 205
 206         for (l = priv->chatrooms; l; l = l->next) {
 207                 GossipChatroom *chatroom;
 208                 McAccount      *this_account;
 209                 const gchar    *this_room;
 210
 211                 chatroom = l->data;
 212                 this_account = gossip_chatroom_get_account (chatroom);
 213                 this_room = gossip_chatroom_get_room (chatroom);
 214
 215                 if (gossip_account_equal (account, this_account) &&
 216                     strcmp (this_room, room) == 0) {
 217                         return chatroom;
 218                 }
 219         }
 220
 221         return NULL;
 222 }
 223
 224 GList *
 225 gossip_chatroom_manager_get_chatrooms (GossipChatroomManager *manager,
 226                                        McAccount             *account)
 227 {
 228         GossipChatroomManagerPriv *priv;
 229         GList                     *chatrooms, *l;
 230
 231         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), NULL);
 232
 233         priv = GET_PRIV (manager);
 234
 235         if (!account) {
 236                 return g_list_copy (priv->chatrooms);
 237         }
 238
 239         chatrooms = NULL;
 240         for (l = priv->chatrooms; l; l = l->next) {
 241                 GossipChatroom *chatroom;
 242
 243                 chatroom = l->data;
 244
 245                 if (gossip_account_equal (account,
 246                                           gossip_chatroom_get_account (chatroom))) {
 247                         chatrooms = g_list_append (chatrooms, chatroom);
 248                 }
 249         }
 250
 251         return chatrooms;
 252 }
 253
 254 guint
 255 gossip_chatroom_manager_get_count (GossipChatroomManager *manager,
 256                                    McAccount             *account)
 257 {
 258         GossipChatroomManagerPriv *priv;
 259         GList                     *l;
 260         guint                      count = 0;
 261
 262         g_return_val_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager), 0);
 263
 264         priv = GET_PRIV (manager);
 265
 266         if (!account) {
 267                 return g_list_length (priv->chatrooms);
 268         }
 269
 270         for (l = priv->chatrooms; l; l = l->next) {
 271                 GossipChatroom *chatroom;
 272
 273                 chatroom = l->data;
 274
 275                 if (gossip_account_equal (account,
 276                                           gossip_chatroom_get_account (chatroom))) {
 277                         count++;
 278                 }
 279         }
 280
 281         return count;
 282 }
 283
 284 void
 285 gossip_chatroom_manager_store (GossipChatroomManager *manager)
 286 {
 287         g_return_if_fail (GOSSIP_IS_CHATROOM_MANAGER (manager));
 288
 289         chatroom_manager_file_save (manager);
 290 }
 291
 292 /*
 293  * API to save/load and parse the chatrooms file.
 294  */
 295
 296 static gboolean
 297 chatroom_manager_get_all (GossipChatroomManager *manager)
 298 {
 299         GossipChatroomManagerPriv *priv;
 300         gchar                     *dir;
 301         gchar                     *file_with_path = NULL;
 302
 303         priv = GET_PRIV (manager);
 304
 305         dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
 306         if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
 307                 g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 308         }
 309
 310         file_with_path = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 311         g_free (dir);
 312
 313         /* read file in */
 314         if (g_file_test (file_with_path, G_FILE_TEST_EXISTS) &&
 315             !chatroom_manager_file_parse (manager, file_with_path)) {
 316                 g_free (file_with_path);
 317                 return FALSE;
 318         }
 319
 320         g_free (file_with_path);
 321
 322         return TRUE;
 323 }
 324
 325 static gboolean
 326 chatroom_manager_file_parse (GossipChatroomManager *manager,
 327                              const gchar           *filename)
 328 {
 329         GossipChatroomManagerPriv *priv;
 330         xmlParserCtxtPtr           ctxt;
 331         xmlDocPtr                  doc;
 332         xmlNodePtr                 chatrooms;
 333         xmlNodePtr                 node;
 334
 335         priv = GET_PRIV (manager);
 336
 337         gossip_debug (DEBUG_DOMAIN, "Attempting to parse file:'%s'...", filename);
 338
 339         ctxt = xmlNewParserCtxt ();
 340
 341         /* Parse and validate the file. */
 342         doc = xmlCtxtReadFile (ctxt, filename, NULL, 0);
 343         if (!doc) {
 344                 g_warning ("Failed to parse file:'%s'", filename);
 345                 xmlFreeParserCtxt (ctxt);
 346                 return FALSE;
 347         }
 348
 349         if (!gossip_xml_validate (doc, CHATROOMS_DTD_FILENAME)) {
 350                 g_warning ("Failed to validate file:'%s'", filename);
 351                 xmlFreeDoc(doc);
 352                 xmlFreeParserCtxt (ctxt);
 353                 return FALSE;
 354         }
 355
 356         /* The root node, chatrooms. */
 357         chatrooms = xmlDocGetRootElement (doc);
 358
 359         for (node = chatrooms->children; node; node = node->next) {
 360                 if (strcmp ((gchar *) node->name, "chatroom") == 0) {
 361                         chatroom_manager_parse_chatroom (manager, node);
 362                 }
 363         }
 364
 365         gossip_debug (DEBUG_DOMAIN,
 366                       "Parsed %d chatrooms",
 367                       g_list_length (priv->chatrooms));
 368
 369         xmlFreeDoc(doc);
 370         xmlFreeParserCtxt (ctxt);
 371
 372         return TRUE;
 373 }
 374
 375 static void
 376 chatroom_manager_parse_chatroom (GossipChatroomManager *manager,
 377                                  xmlNodePtr             node)
 378 {
 379         GossipChatroomManagerPriv *priv;
 380         GossipChatroom            *chatroom;
 381         McAccount                 *account;
 382         xmlNodePtr                 child;
 383         gchar                     *str;
 384         gchar                     *name;
 385         gchar                     *room;
 386         gchar                     *account_id;
 387         gboolean                   auto_connect;
 388
 389         priv = GET_PRIV (manager);
 390
 391         /* default values. */
 392         name = NULL;
 393         room = NULL;
 394         auto_connect = TRUE;
 395         account_id = NULL;
 396
 397         for (child = node->children; child; child = child->next) {
 398                 gchar *tag;
 399
 400                 if (xmlNodeIsText (child)) {
 401                         continue;
 402                 }
 403
 404                 tag = (gchar *) child->name;
 405                 str = (gchar *) xmlNodeGetContent (child);
 406
 407                 if (strcmp (tag, "name") == 0) {
 408                         name = g_strdup (str);
 409                 }
 410                 else if (strcmp (tag, "room") == 0) {
 411                         room = g_strdup (str);
 412                 }
 413                 else if (strcmp (tag, "auto_connect") == 0) {
 414                         if (strcmp (str, "yes") == 0) {
 415                                 auto_connect = TRUE;
 416                         } else {
 417                                 auto_connect = FALSE;
 418                         }
 419                 }
 420                 else if (strcmp (tag, "account") == 0) {
 421                         account_id = g_strdup (str);
 422                 }
 423
 424                 xmlFree (str);
 425         }
 426
 427         account = mc_account_lookup (account_id);
 428         if (!account) {
 429                 g_free (name);
 430                 g_free (room);
 431                 g_free (account_id);
 432                 return;
 433         }
 434
 435         chatroom = gossip_chatroom_new_full (account,
 436                                              room,
 437                                              name,
 438                                              auto_connect);
 439
 440         priv->chatrooms = g_list_prepend (priv->chatrooms, chatroom);
 441
 442         g_object_unref (account);
 443         g_free (name);
 444         g_free (room);
 445         g_free (account_id);
 446 }
 447
 448 static gboolean
 449 chatroom_manager_file_save (GossipChatroomManager *manager)
 450 {
 451         GossipChatroomManagerPriv *priv;
 452         xmlDocPtr                  doc;
 453         xmlNodePtr                 root;
 454         GList                     *l;
 455         gchar                     *dir;
 456         gchar                     *file;
 457
 458         priv = GET_PRIV (manager);
 459
 460         dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
 461         if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
 462                 g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 463         }
 464
 465         file = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 466         g_free (dir);
 467
 468         doc = xmlNewDoc ("1.0");
 469         root = xmlNewNode (NULL, "chatrooms");
 470         xmlDocSetRootElement (doc, root);
 471
 472         for (l = priv->chatrooms; l; l = l->next) {
 473                 GossipChatroom *chatroom;
 474                 xmlNodePtr      node;
 475                 const gchar    *account_id;
 476
 477                 chatroom = l->data;
 478                 account_id = mc_account_get_unique_name (gossip_chatroom_get_account (chatroom));
 479
 480                 node = xmlNewChild (root, NULL, "chatroom", NULL);
 481                 xmlNewTextChild (node, NULL, "name", gossip_chatroom_get_name (chatroom));
 482                 xmlNewTextChild (node, NULL, "room", gossip_chatroom_get_room (chatroom));
 483                 xmlNewTextChild (node, NULL, "account", account_id);
 484                 xmlNewTextChild (node, NULL, "auto_connect", gossip_chatroom_get_auto_connect (chatroom) ? "yes" : "no");
 485         }
 486
 487         /* Make sure the XML is indented properly */
 488         xmlIndentTreeOutput = 1;
 489
 490         gossip_debug (DEBUG_DOMAIN, "Saving file:'%s'", file);
 491         xmlSaveFormatFileEnc (file, doc, "utf-8", 1);
 492         xmlFreeDoc (doc);
 493
 494         xmlCleanupParser ();
 495         xmlMemoryDump ();
 496
 497         g_free (file);
 498
 499         return TRUE;
 500 }