thrasher.c

   1 /*
   2  * Thrasher Bird - XMPP transport via libpurple
   3  * Copyright (C) 2008 Barracuda Networks, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with Thrasher Bird; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  18  */
  19 #include <glib.h>
  20 #include <signal.h>
  21 #include <string.h>
  22 #include <unistd.h>
  23 #include <sys/socket.h>
  24
  25 #include "purple.h"
  26 #include "thrasher.h"
  27 #include "thblist.h"
  28 #include "thconnection.h"
  29 #include "thperl.h"
  30 #include "thft.h"
  31 #include "threquest.h"
  32 #include "thconversations.h"
  33
  34 GHashTable *account_to_connection = NULL;
  35 GHashTable *jid_to_account = NULL;
  36
  37 void debug_print(PurpleDebugLevel level, const char *category, const char *arg_s);
  38 gboolean is_enabled(PurpleDebugLevel level, const char *category);
  39
  40 static PurpleEventLoopUiOps glib_eventloops =
  41 {
  42     thrasher_wrapper_set_timeout_add,
  43     thrasher_wrapper_call_source_remove,
  44     thrasher_wrapper_set_input_add,
  45     thrasher_wrapper_call_source_remove,
  46     NULL,
  47     NULL,
  48
  49     /* padding */
  50     NULL,
  51     NULL,
  52     NULL
  53 };
  54 static PurpleCoreUiOps thrasher_core_uiops =
  55 {
  56     NULL,
  57     NULL,
  58     NULL,
  59     NULL,
  60
  61     /* padding */
  62     NULL,
  63     NULL,
  64     NULL,
  65     NULL
  66 };
  67
  68
  69 static PurpleConnectionUiOps thrasher_conn_uiops =
  70 {
  71     // connect progress
  72     NULL,
  73     // connected,
  74     thrasher_connection,
  75     // disconnected
  76     NULL,
  77     // connection-specific notices, effectively unused
  78     NULL,
  79     // report disconnect
  80     NULL,
  81     // computer network connected
  82     NULL,
  83     // computer network disconnected
  84     NULL,
  85     // report disconnect reason
  86     NULL,
  87     // reserved 1
  88     NULL,
  89     // reserved 2
  90     NULL,
  91     // reserved 3
  92     NULL
  93 };
  94
  95 void thrasher_init()
  96 {
  97      purple_core_set_ui_ops(&thrasher_core_uiops);
  98      purple_eventloop_set_ui_ops(&glib_eventloops);
  99      purple_connections_set_ui_ops(&thrasher_conn_uiops);
 100
 101      if (!purple_core_init(UI_ID))
 102           error(EXIT_FAILURE, 0, "libpurple init failed");
 103
 104      thrasher_blist_init();
 105      thrasher_connection_init();
 106      thrasher_xfer_init();
 107      thrasher_perl_init();
 108      thrasher_request_init();
 109      thrasher_conversations_init();
 110
 111      // This hash table has no ownership on the pointers stored in it
 112      account_to_connection = g_hash_table_new(g_direct_hash,
 113                                               g_direct_equal);
 114      // Automatically cleans up keys, does not own stored pointers
 115      jid_to_account = g_hash_table_new_full(g_str_hash, g_str_equal,
 116                                             g_free, NULL);
 117
 118      purple_set_blist(purple_blist_new());
 119
 120      purple_signal_connect(purple_connections_get_handle(),
 121                            "signing-off",
 122                            thrasher_connection_get_handle(),
 123                            PURPLE_CALLBACK(thrasher_signing_off_cb),
 124                            NULL);
 125 }
 126
 127 void thrasher_whoami (PurpleAccount * pa)
 128 {
 129     if (pa)
 130         purple_debug_info("thrasher",
 131                           "You are user [%s]\n",
 132                           pa->username);
 133 }
 134
 135 void thrasher_signing_off_cb(PurpleConnection *gc) {
 136     g_return_if_fail(gc);
 137
 138     PurpleAccount* pa = purple_connection_get_account(gc);
 139     g_return_if_fail(pa);
 140
 141     if (g_hash_table_lookup(account_to_connection, pa)) {
 142         char *jid = thrasher_account_get_jid(pa);
 143         g_hash_table_remove(jid_to_account, jid);
 144         g_hash_table_remove(account_to_connection, pa);
 145     }
 146 }
 147
 148 void
 149 thrasher_logout (PurpleAccount *pa)
 150 {
 151     g_return_if_fail(pa);
 152
 153     purple_account_set_enabled(pa, UI_ID, FALSE);
 154
 155     // Only disconnect if we haven't already
 156     if (g_hash_table_lookup(account_to_connection, pa)) {
 157         purple_account_disconnect(pa);
 158     } else {
 159         purple_debug_info("thrasher",
 160                           "Declined to log out unconnected account\n");
 161     }
 162
 163     if (pa->ui_data) {
 164         Thrasher_PurpleAccount_UI_Data* ui_data = pa->ui_data;
 165         pa->ui_data = NULL;
 166         g_hash_table_destroy(ui_data->pending_send_file);
 167         g_free(ui_data);
 168     }
 169 }
 170
 171 PurpleAccount * thrasher_get_account_by_jid(const char* jid) {
 172     g_return_val_if_fail(jid, NULL);
 173     return g_hash_table_lookup(jid_to_account, jid);
 174 }
 175
 176 PurpleConnection * thrasher_get_connection_by_account
 177     (const PurpleAccount* account) {
 178     g_return_val_if_fail(account, NULL);
 179     return g_hash_table_lookup(account_to_connection, account);
 180 }
 181
 182 // An error can occur during the login, when the protocol decides
 183 // there's going to be a connection error before it even returns the
 184 // connection to us. In that case, our user data won't exist on the
 185 // connection, but the connection error still needs to propagate back
 186 // to the user. In that case, we use this value. This rather ties
 187 // us to a single thread.
 188
 189 static char *current_login_jid = NULL;
 190 static uint got_error = 0;
 191
 192 char * get_current_login_jid () {
 193     return current_login_jid;
 194 }
 195
 196 void set_got_error (uint new_val) {
 197     got_error = new_val;
 198 }
 199
 200
 201 static void
 202 thrasher_prefs_init() {
 203     purple_prefs_load();
 204
 205     /* Disable all logging to disk because it might leave files under
 206      * USER_ROOT_DIR open.
 207      */
 208     purple_prefs_set_bool("/purple/logging/log_ims", FALSE);
 209     purple_prefs_set_bool("/purple/logging/log_chats", FALSE);
 210     purple_prefs_set_bool("/purple/logging/log_system", FALSE);
 211 }
 212
 213 PurpleAccount *
 214 thrasher_login (char *service, char *username, char *password, char *jid,
 215                 GHashTable *other_args)
 216 {
 217     got_error = 0;
 218     current_login_jid = jid;
 219     gchar *user_dir;
 220
 221     if (purple_get_core() == 0)
 222         error(EXIT_FAILURE, 0, "Purple core is uninitialized");
 223
 224     purple_debug_info("thrasher",
 225                       "Thrasher login initiated\n");
 226
 227     /* Test service for validity */
 228
 229     /* Test user for validity */
 230     /* We need to verify there is NO path redirection in the user name! */
 231     /* We also need to verify username is NOT longer than MAX_NAME_LEN */
 232
 233     /* Test password for validity */
 234
 235
 236     /* Validate the root_dir and build us a filename */
 237     user_dir = g_build_filename(USER_ROOT_DIR, service, username, NULL);
 238
 239     purple_util_set_user_dir(user_dir);
 240
 241     g_free(user_dir);
 242
 243     PurpleAccount *account;
 244     PurpleSavedStatus *status;
 245
 246     /* Need to research these... */
 247     purple_blist_load();
 248     thrasher_prefs_init();
 249     purple_pounces_load(); /* Don't believe we need this */
 250
 251     /* Setup the account and throw it back */
 252     account = purple_account_new(username, service);
 253     g_hash_table_insert(jid_to_account, g_strdup(jid), account);
 254     purple_account_set_password(account, password);
 255
 256     Thrasher_PurpleAccount_UI_Data* ui_data
 257         = g_new(Thrasher_PurpleAccount_UI_Data, 1);
 258     ui_data->jid = g_strdup(jid); /* Store the JID with the account */
 259     ui_data->pending_send_file = g_hash_table_new(g_str_hash,
 260                                                   g_str_equal);
 261     account->ui_data = ui_data;
 262
 263     if (other_args) {
 264         GHashTableIter iter;
 265         gpointer key, value;
 266         char *char_key, *char_value;
 267
 268         g_hash_table_iter_init(&iter, other_args);
 269         while (g_hash_table_iter_next(&iter, &key, &value)) {
 270             char_value = (char *)value;
 271             char_key = (char *)key;
 272             if (!strncmp(key, "int_", 4))
 273             {
 274                 char_key += 4;
 275                 int int_value = atoi(char_value);
 276                 purple_debug_info("thrasher",
 277                                   "Setting account #: %s -> %d\n",
 278                                   char_key, int_value);
 279                 purple_account_set_int(account, char_key, atoi(char_value));
 280             } else if (!strncmp(key, "bool_", 5)) {
 281                 char_key += 5;
 282                 int value = (*char_value == '0' ||
 283                              *char_value == 0) ? FALSE: TRUE;
 284                 purple_debug_info("thrasher",
 285                                   "Setting account bool: %s -> %d\n",
 286                                   char_key, value);
 287                 purple_account_set_bool(account, char_key, value);
 288             } else {
 289                 purple_debug_info("thrasher",
 290                                   "Setting account string: %s -> %s\n",
 291                                   char_key, char_value);
 292                 purple_account_set_string(account, char_key,
 293                                           char_value);
 294             }
 295         }
 296     }
 297
 298     purple_account_set_enabled(account, UI_ID, TRUE);
 299     status = purple_savedstatus_new(NULL, PURPLE_STATUS_AVAILABLE);
 300     purple_savedstatus_activate(status);
 301
 302     current_login_jid = NULL;
 303
 304     if (got_error) {
 305         purple_debug_info("thrasher",
 306                           "got an error during initial login\n");
 307         return NULL;
 308     }
 309
 310 #ifdef TH_DEBUG
 311     purple_debug_info("thrasher",
 312                       "Supported protocols\n");
 313     GList *iter; int i;
 314     iter = purple_plugins_get_protocols();
 315     for (i = 0; iter; iter = iter->next) {
 316         PurplePlugin *plugin = iter->data;
 317         PurplePluginInfo *info = plugin->info;
 318         if (info && info->name) {
 319             purple_debug_info("thrasher",
 320                               "\t%d: %s\n",
 321                               i++,
 322                               info->name);
 323         }
 324     }
 325 #endif
 326
 327
 328 /* Not sure how I got in this state, but write a catch nonetheless */
 329     if (!purple_plugins_get_protocols())
 330         error(EXIT_FAILURE, 0, "libpurple reports NO supported protocols, this is a BAD thing");
 331
 332     return account;
 333 }
 334
 335 /*
 336  * How to send message to remote user
 337  *
 338  * pa      = PurpleAccount ptr
 339  * name    = recipient name char*
 340  * message = message char*
 341  *
 342  * If the conversation data can be created this returns TRUE, else it returns FALSE
 343  *
 344  * Get the conversation if it already exists
 345  * (Per the code flow, we may be able to set type to NULL and let it figure it out.)
 346 */
 347
 348 gboolean
 349 thrasher_send_msg (PurpleAccount *pa, const char *name, const char *message)
 350 {
 351     PurpleConversation *conv = thrasher_find_conversation_with_account(pa,
 352                                                                        name);
 353     PurpleConvIm       *im;
 354
 355     /* Get the IM specific data */
 356     im = purple_conversation_get_im_data(conv);
 357
 358     if (im) {
 359         purple_conv_im_send(im, message);
 360         return TRUE;
 361     }
 362
 363     purple_debug_info("thrasher",
 364                       "Failed in purple_conv_im_send\n");
 365
 366     return FALSE;
 367 }
 368
 369 void thrasher_connection (PurpleConnection *conn)
 370 {
 371      PurpleAccount *account = purple_connection_get_account(conn);
 372
 373      g_hash_table_insert(account_to_connection, account, conn);
 374
 375      thrasher_wrapper_connection(thrasher_account_get_jid(account));
 376 }
 377
 378 PurpleConnection* thrasher_connection_for_account(PurpleAccount
 379                                                   *account) {
 380     g_return_val_if_fail(account, NULL);
 381
 382     return g_hash_table_lookup(account_to_connection, account);
 383 }
 384
 385 /*
 386  * thrasher_account_get_jid
 387  */
 388 gchar*
 389 thrasher_account_get_jid(PurpleAccount *account)
 390 {
 391     g_return_val_if_fail(account, NULL);
 392
 393     Thrasher_PurpleAccount_UI_Data* ui_data = account->ui_data;
 394     return ui_data->jid;
 395 }
 396
 397 /*
 398  * thrasher_account_get_pending_send_file
 399  */
 400 GHashTable*
 401 thrasher_account_get_pending_send_file(PurpleAccount *account) {
 402     g_return_val_if_fail(account, NULL);
 403
 404     Thrasher_PurpleAccount_UI_Data* ui_data = account->ui_data;
 405     g_return_val_if_fail(ui_data, NULL);
 406     return ui_data->pending_send_file;
 407 }
 408
 409 gboolean
 410 thrasher_account_buddy_is_authorized(PurpleAccount *account,
 411                                      PurpleBuddy *buddy) {
 412     /* FIXME: There's no cross-prpl call for this? Get tricky. */
 413     g_return_val_if_fail(account, 1);
 414     g_return_val_if_fail(buddy, 1);
 415
 416     PurplePlugin *prpl
 417         = purple_find_prpl(purple_account_get_protocol_id(buddy->account));;
 418     g_return_val_if_fail(prpl, 1);
 419
 420     PurplePluginProtocolInfo *prpl_info = PURPLE_PLUGIN_PROTOCOL_INFO(prpl);
 421     g_return_val_if_fail(prpl_info, 1);
 422
 423     if (prpl_info->list_emblem) {
 424         const char *emblem_name = prpl_info->list_emblem(buddy);
 425         if (emblem_name && 0 == strcmp(emblem_name, "not-authorized")) {
 426             return 0;
 427         }
 428     }
 429
 430     return 1;
 431 }