src/core/sipe-im.c

   1 /**
   2  * @file sipe-im.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2011 SIPE Project <http://sipe.sourceforge.net/>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include <glib.h>
  31
  32 #include "sipe-common.h"
  33 #include "sipmsg.h"
  34 #include "sip-transport.h"
  35 #include "sipe-backend.h"
  36 #include "sipe-chat.h"
  37 #include "sipe-core.h"
  38 #include "sipe-core-private.h"
  39 #include "sipe-dialog.h"
  40 #include "sipe-ft.h"
  41 #include "sipe-groupchat.h"
  42 #include "sipe-im.h"
  43 #include "sipe-nls.h"
  44 #include "sipe-session.h"
  45 #include "sipe-user.h"
  46 #include "sipe-utils.h"
  47 #include "sipe-xml.h"
  48
  49 /*
  50  * Hash key template for unconfirmed messages
  51  *
  52  *                                             Call-ID      Recipient URI (or empty)
  53  *                                               |               |
  54  *                                               |  SIP method   |    CSeq
  55  *                                               |     |         |     |             */
  56 #define UNCONFIRMED_KEY_TEMPLATE(method, cseq) "<%s><" method "><%s><" cseq
  57
  58 /* key must be g_free()'d */
  59 static gchar *get_unconfirmed_message_key(const gchar *callid,
  60                                           unsigned int cseq,
  61                                           const gchar *with)
  62 {
  63         return(g_strdup_printf(UNCONFIRMED_KEY_TEMPLATE("%s", "%d>"),
  64                                callid,
  65                                with ? "MESSAGE" : "INVITE",
  66                                with ? with : "",
  67                                cseq));
  68 }
  69
  70 static void insert_unconfirmed_message(struct sip_session *session,
  71                                        struct sip_dialog *dialog,
  72                                        const gchar *with,
  73                                        const gchar *body,
  74                                        const gchar *content_type)
  75 {
  76         gchar *key = get_unconfirmed_message_key(dialog->callid, dialog->cseq + 1, with);
  77         struct queued_message *message = g_new0(struct queued_message, 1);
  78
  79         message->body = g_strdup(body);
  80         if (content_type != NULL)
  81                 message->content_type = g_strdup(content_type);
  82         message->cseq = dialog->cseq + 1;
  83
  84         g_hash_table_insert(session->unconfirmed_messages, key, message);
  85         SIPE_DEBUG_INFO("insert_unconfirmed_message: added %s to list (count=%d)",
  86                         key, g_hash_table_size(session->unconfirmed_messages));
  87 }
  88
  89 static gboolean remove_unconfirmed_message(struct sip_session *session,
  90                                            const gchar *key)
  91 {
  92         gboolean found = g_hash_table_remove(session->unconfirmed_messages, key);
  93         if (found) {
  94                 SIPE_DEBUG_INFO("remove_unconfirmed_message: removed %s from list (count=%d)",
  95                                 key, g_hash_table_size(session->unconfirmed_messages));
  96         } else {
  97                 SIPE_DEBUG_INFO("remove_unconfirmed_message: key %s not found",
  98                                 key);
  99         }
 100         return(found);
 101 }
 102
 103 static void sipe_refer_notify(struct sipe_core_private *sipe_private,
 104                               struct sip_session *session,
 105                               const gchar *who,
 106                               int status,
 107                               const gchar *desc)
 108 {
 109         gchar *hdr;
 110         gchar *body;
 111         struct sip_dialog *dialog = sipe_dialog_find(session, who);
 112
 113         hdr = g_strdup_printf(
 114                 "Event: refer\r\n"
 115                 "Subscription-State: %s\r\n"
 116                 "Content-Type: message/sipfrag\r\n",
 117                 status >= 200 ? "terminated" : "active");
 118
 119         body = g_strdup_printf(
 120                 "SIP/2.0 %d %s\r\n",
 121                 status, desc);
 122
 123         sip_transport_request(sipe_private,
 124                               "NOTIFY",
 125                               who,
 126                               who,
 127                               hdr,
 128                               body,
 129                               dialog,
 130                               NULL);
 131
 132         g_free(hdr);
 133         g_free(body);
 134 }
 135
 136 static gchar *get_buddy_alias(struct sipe_core_private *sipe_private,
 137                               const gchar *with)
 138 {
 139         sipe_backend_buddy pbuddy;
 140         gchar *alias = NULL;
 141         if ((pbuddy = sipe_backend_buddy_find(SIPE_CORE_PUBLIC, with, NULL))) {
 142                 alias = sipe_backend_buddy_get_alias(SIPE_CORE_PUBLIC, pbuddy);
 143         }
 144         return(alias);
 145 }
 146
 147 static gboolean process_invite_response(struct sipe_core_private *sipe_private,
 148                                         struct sipmsg *msg,
 149                                         struct transaction *trans)
 150 {
 151         gchar *with = parse_from(sipmsg_find_header(msg, "To"));
 152         struct sip_session *session;
 153         struct sip_dialog *dialog;
 154         gchar *key;
 155         struct queued_message *message;
 156         struct sipmsg *request_msg = trans->msg;
 157
 158         const gchar *callid = sipmsg_find_header(msg, "Call-ID");
 159         gchar *referred_by;
 160
 161         session = sipe_session_find_chat_or_im(sipe_private, callid, with);
 162         if (!session) {
 163                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: unable to find IM session");
 164                 g_free(with);
 165                 return FALSE;
 166         }
 167
 168         dialog = sipe_dialog_find(session, with);
 169         if (!dialog) {
 170                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: session outgoing dialog is NULL");
 171                 g_free(with);
 172                 return FALSE;
 173         }
 174
 175         sipe_dialog_parse(dialog, msg, TRUE);
 176
 177         key = get_unconfirmed_message_key(dialog->callid, sipmsg_parse_cseq(msg), NULL);
 178         message = g_hash_table_lookup(session->unconfirmed_messages, key);
 179
 180         if (msg->response != 200) {
 181                 gchar *alias = get_buddy_alias(sipe_private, with);
 182                 const char *warn_hdr = sipmsg_find_header(msg, "Warning");
 183                 int warning = -1;
 184
 185                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: INVITE response not 200");
 186
 187                 if (warn_hdr) {
 188                         gchar **parts = g_strsplit(warn_hdr, " ", 2);
 189                         if (parts[0]) {
 190                                 warning = atoi(parts[0]);
 191                         }
 192                         g_strfreev(parts);
 193                 }
 194
 195                 /* cancel file transfer as rejected by server */
 196                 if (msg->response == 606 &&     /* Not acceptable all. */
 197                     warning == 309 &&           /* Message contents not allowed by policy */
 198                     message && g_str_has_prefix(message->content_type, "text/x-msmsgsinvite"))
 199                 {
 200                         GSList *parsed_body = sipe_ft_parse_msg_body(message->body);
 201                         sipe_ft_incoming_cancel(dialog, parsed_body);
 202                         sipe_utils_nameval_free(parsed_body);
 203                 }
 204
 205                 if (message) {
 206                         /* generate error for each unprocessed message */
 207                         GSList *entry = session->outgoing_message_queue;
 208                         while (entry) {
 209                                 struct queued_message *queued = entry->data;
 210                                 sipe_user_present_message_undelivered(sipe_private, session, msg->response, warning, alias ? alias : with, queued->body);
 211                                 entry = sipe_session_dequeue_message(session);
 212                         }
 213                 } else {
 214                         /* generate one error and remove all unprocessed messages */
 215                         gchar *tmp_msg = g_strdup_printf(_("Failed to invite %s"), alias ? alias : with);
 216                         sipe_user_present_error(sipe_private, session, tmp_msg);
 217                         g_free(tmp_msg);
 218                         while (sipe_session_dequeue_message(session));
 219                 }
 220                 g_free(alias);
 221
 222                 remove_unconfirmed_message(session, key);
 223                 /* message is no longer valid */
 224                 g_free(key);
 225
 226                 sipe_dialog_remove(session, with);
 227                 g_free(with);
 228
 229                 if (session->is_groupchat) {
 230                         sipe_groupchat_invite_failed(sipe_private, session);
 231                         /* session is no longer valid */
 232                 }
 233
 234                 return FALSE;
 235         }
 236
 237         dialog->cseq = 0;
 238         sip_transport_ack(sipe_private, dialog);
 239         dialog->outgoing_invite = NULL;
 240         dialog->is_established = TRUE;
 241
 242         referred_by = parse_from(sipmsg_find_header(request_msg, "Referred-By"));
 243         if (referred_by) {
 244                 sipe_refer_notify(sipe_private, session, referred_by, 200, "OK");
 245                 g_free(referred_by);
 246         }
 247
 248         /* add user to chat if it is a multiparty session */
 249         if (session->chat_session &&
 250             (session->chat_session->type == SIPE_CHAT_TYPE_MULTIPARTY)) {
 251                 sipe_backend_chat_add(session->chat_session->backend,
 252                                       with,
 253                                       TRUE);
 254         }
 255
 256         if (session->is_groupchat) {
 257                 sipe_groupchat_invite_response(sipe_private, dialog);
 258         }
 259
 260         if(g_slist_find_custom(dialog->supported, "ms-text-format", (GCompareFunc)g_ascii_strcasecmp)) {
 261                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: remote system accepted message in INVITE");
 262                 sipe_session_dequeue_message(session);
 263         }
 264
 265         sipe_im_process_queue(sipe_private, session);
 266
 267         remove_unconfirmed_message(session, key);
 268
 269         g_free(key);
 270         g_free(with);
 271         return TRUE;
 272 }
 273
 274 /* EndPoints: "alice alisson" <sip:alice@atlanta.local>, <sip:bob@atlanta.local>;epid=ebca82d94d, <sip:carol@atlanta.local> */
 275 static gchar *get_end_points(struct sipe_core_private *sipe_private,
 276                              struct sip_session *session)
 277 {
 278         gchar *res;
 279
 280         if (session == NULL) {
 281                 return NULL;
 282         }
 283
 284         res = g_strdup_printf("<sip:%s>", sipe_private->username);
 285
 286         SIPE_DIALOG_FOREACH {
 287                 gchar *tmp = res;
 288                 res = g_strdup_printf("%s, <%s>", res, dialog->with);
 289                 g_free(tmp);
 290
 291                 if (dialog->theirepid) {
 292                         tmp = res;
 293                         res = g_strdup_printf("%s;epid=%s", res, dialog->theirepid);
 294                         g_free(tmp);
 295                 }
 296         } SIPE_DIALOG_FOREACH_END;
 297
 298         return res;
 299 }
 300
 301 void
 302 sipe_im_invite(struct sipe_core_private *sipe_private,
 303                struct sip_session *session,
 304                const gchar *who,
 305                const gchar *msg_body,
 306                const gchar *content_type,
 307                const gchar *referred_by,
 308                const gboolean is_triggered)
 309 {
 310         gchar *hdr;
 311         gchar *to;
 312         gchar *contact;
 313         gchar *body;
 314         gchar *self;
 315         char  *ms_text_format = NULL;
 316         char  *ms_conversation_id = NULL;
 317         gchar *roster_manager;
 318         gchar *end_points;
 319         gchar *referred_by_str;
 320         gboolean is_multiparty =
 321                 session->chat_session &&
 322                 (session->chat_session->type == SIPE_CHAT_TYPE_MULTIPARTY);
 323         struct sip_dialog *dialog = sipe_dialog_find(session, who);
 324
 325         if (dialog && dialog->is_established) {
 326                 SIPE_DEBUG_INFO("session with %s already has a dialog open", who);
 327                 return;
 328         }
 329
 330         if (!dialog) {
 331                 dialog = sipe_dialog_add(session);
 332                 dialog->callid = session->callid ? g_strdup(session->callid) : gencallid();
 333                 dialog->with = g_strdup(who);
 334         }
 335
 336         if (!(dialog->ourtag)) {
 337                 dialog->ourtag = gentag();
 338         }
 339
 340         to = sip_uri(who);
 341
 342         if (msg_body) {
 343                 char *msgtext = NULL;
 344                 char *base64_msg;
 345                 const gchar *msgr = "";
 346                 gchar *tmp = NULL;
 347
 348                 if (!g_str_has_prefix(content_type, "text/x-msmsgsinvite")) {
 349                         char *msgformat;
 350                         gchar *msgr_value;
 351
 352                         sipe_parse_html(msg_body, &msgformat, &msgtext);
 353                         SIPE_DEBUG_INFO("sipe_invite: msgformat=%s", msgformat);
 354
 355                         msgr_value = sipmsg_get_msgr_string(msgformat);
 356                         g_free(msgformat);
 357                         if (msgr_value) {
 358                                 msgr = tmp = g_strdup_printf(";msgr=%s", msgr_value);
 359                                 g_free(msgr_value);
 360                         }
 361
 362                         /* When Sipe reconnects after a crash, we are not able
 363                          * to send messages to contacts with which we had open
 364                          * conversations when the crash occured. Server sends
 365                          * error response with reason="This client has an IM
 366                          * session with the same conversation ID"
 367                          *
 368                          * Setting random Ms-Conversation-ID prevents this problem
 369                          * so we can continue the conversation. */
 370                         ms_conversation_id = g_strdup_printf("Ms-Conversation-ID: %u\r\n",
 371                                                              rand() % 1000000000);
 372                 } else {
 373                         msgtext = g_strdup(msg_body);
 374                 }
 375
 376                 base64_msg = g_base64_encode((guchar*) msgtext, strlen(msgtext));
 377                 ms_text_format = g_strdup_printf("ms-text-format: %s; charset=UTF-8%s;ms-body=%s\r\n",
 378                                                  content_type ? content_type : "text/plain",
 379                                                  msgr,
 380                                                  base64_msg);
 381                 g_free(msgtext);
 382                 g_free(tmp);
 383                 g_free(base64_msg);
 384
 385                 insert_unconfirmed_message(session, dialog, NULL,
 386                                            msg_body, content_type);
 387         }
 388
 389         contact = get_contact(sipe_private);
 390         end_points = get_end_points(sipe_private, session);
 391         self = sip_uri_self(sipe_private);
 392         roster_manager = g_strdup_printf(
 393                 "Roster-Manager: %s\r\n"
 394                 "EndPoints: %s\r\n",
 395                 self,
 396                 end_points);
 397         referred_by_str = referred_by ?
 398                 g_strdup_printf(
 399                         "Referred-By: %s\r\n",
 400                         referred_by)
 401                 : g_strdup("");
 402         hdr = g_strdup_printf(
 403                 "Supported: ms-sender\r\n"
 404                 "%s"
 405                 "%s"
 406                 "%s"
 407                 "%s"
 408                 "Contact: %s\r\n%s"
 409                 "%s"
 410                 "Content-Type: application/sdp\r\n",
 411                 is_multiparty && sipe_strcase_equal(session->chat_session->id, self) ? roster_manager : "",
 412                 referred_by_str,
 413                 is_triggered ? "TriggeredInvite: TRUE\r\n" : "",
 414                 is_triggered || is_multiparty ? "Require: com.microsoft.rtc-multiparty\r\n" : "",
 415                 contact,
 416                 ms_text_format ? ms_text_format : "",
 417                 ms_conversation_id ? ms_conversation_id : "");
 418         g_free(ms_text_format);
 419         g_free(ms_conversation_id);
 420         g_free(self);
 421
 422         body = g_strdup_printf(
 423                 "v=0\r\n"
 424                 "o=- 0 0 IN IP4 %s\r\n"
 425                 "s=session\r\n"
 426                 "c=IN IP4 %s\r\n"
 427                 "t=0 0\r\n"
 428                 "m=%s %d sip null\r\n"
 429                 "a=accept-types:" SDP_ACCEPT_TYPES "\r\n",
 430                 sipe_backend_network_ip_address(),
 431                 sipe_backend_network_ip_address(),
 432                 SIPE_CORE_PRIVATE_FLAG_IS(OCS2007) ? "message" : "x-ms-message",
 433                 sip_transport_port(sipe_private));
 434
 435         dialog->outgoing_invite = sip_transport_request(sipe_private,
 436                                                         "INVITE",
 437                                                         to,
 438                                                         to,
 439                                                         hdr,
 440                                                         body,
 441                                                         dialog,
 442                                                         process_invite_response);
 443
 444         g_free(to);
 445         g_free(roster_manager);
 446         g_free(end_points);
 447         g_free(referred_by_str);
 448         g_free(body);
 449         g_free(hdr);
 450         g_free(contact);
 451 }
 452
 453 static gboolean
 454 process_message_response(struct sipe_core_private *sipe_private,
 455                          struct sipmsg *msg,
 456                          SIPE_UNUSED_PARAMETER struct transaction *trans)
 457 {
 458         gboolean ret = TRUE;
 459         gchar *with = parse_from(sipmsg_find_header(msg, "To"));
 460         struct sip_session *session = sipe_session_find_im(sipe_private, with);
 461         struct sip_dialog *dialog;
 462         gchar *key;
 463         struct queued_message *message;
 464
 465         if (!session) {
 466                 SIPE_DEBUG_INFO_NOFORMAT("process_message_response: unable to find IM session");
 467                 g_free(with);
 468                 return FALSE;
 469         }
 470
 471         dialog = sipe_dialog_find(session, with);
 472         if (!dialog) {
 473                 SIPE_DEBUG_INFO_NOFORMAT("process_message_response: session outgoing dialog is NULL");
 474                 g_free(with);
 475                 return FALSE;
 476         }
 477
 478         key = get_unconfirmed_message_key(sipmsg_find_header(msg, "Call-ID"), sipmsg_parse_cseq(msg), with);
 479         message = g_hash_table_lookup(session->unconfirmed_messages, key);
 480
 481         if (msg->response >= 400) {
 482                 const char *warn_hdr = sipmsg_find_header(msg, "Warning");
 483                 int warning = -1;
 484
 485                 SIPE_DEBUG_INFO_NOFORMAT("process_message_response: MESSAGE response >= 400");
 486
 487                 if (warn_hdr) {
 488                         gchar **parts = g_strsplit(warn_hdr, " ", 2);
 489                         if (parts[0]) {
 490                                 warning = atoi(parts[0]);
 491                         }
 492                         g_strfreev(parts);
 493                 }
 494
 495                 /* cancel file transfer as rejected by server */
 496                 if (msg->response == 606 &&     /* Not acceptable all. */
 497                     warning == 309 &&           /* Message contents not allowed by policy */
 498                     message && g_str_has_prefix(message->content_type, "text/x-msmsgsinvite"))
 499                 {
 500                         GSList *parsed_body = sipe_ft_parse_msg_body(msg->body);
 501                         sipe_ft_incoming_cancel(dialog, parsed_body);
 502                         sipe_utils_nameval_free(parsed_body);
 503                 }
 504
 505                 /* drop dangling IM sessions: assume that BYE from remote never reached us */
 506                 if (msg->response == 408 || /* Request timeout */
 507                     msg->response == 480 || /* Temporarily Unavailable */
 508                     msg->response == 481) { /* Call/Transaction Does Not Exist */
 509                         sipe_im_cancel_dangling(sipe_private, session, dialog, with,
 510                                                 sipe_im_cancel_unconfirmed);
 511                         /* dialog is no longer valid */
 512                 } else {
 513                         gchar *alias = get_buddy_alias(sipe_private, with);
 514                         sipe_user_present_message_undelivered(sipe_private, session,
 515                                                               msg->response, warning,
 516                                                               alias ? alias : with,
 517                                                               message ? message->body : NULL);
 518                         remove_unconfirmed_message(session, key);
 519                         /* message is no longer valid */
 520                         g_free(alias);
 521                 }
 522
 523                 ret = FALSE;
 524         } else {
 525                 const gchar *message_id = sipmsg_find_header(msg, "Message-Id");
 526                 if (message_id) {
 527                         g_hash_table_insert(session->conf_unconfirmed_messages, g_strdup(message_id), g_strdup(message->body));
 528                         SIPE_DEBUG_INFO("process_message_response: added message with id %s to conf_unconfirmed_messages(count=%d)",
 529                                         message_id, g_hash_table_size(session->conf_unconfirmed_messages));
 530                 }
 531                 remove_unconfirmed_message(session, key);
 532         }
 533
 534         g_free(key);
 535         g_free(with);
 536
 537         if (ret) sipe_im_process_queue(sipe_private, session);
 538         return ret;
 539 }
 540
 541 static gboolean
 542 process_message_timeout(struct sipe_core_private *sipe_private,
 543                         struct sipmsg *msg,
 544                         SIPE_UNUSED_PARAMETER struct transaction *trans)
 545 {
 546         gchar *with = parse_from(sipmsg_find_header(msg, "To"));
 547         struct sip_session *session = sipe_session_find_im(sipe_private, with);
 548         gchar *key;
 549         gboolean found;
 550
 551         if (!session) {
 552                 SIPE_DEBUG_INFO_NOFORMAT("process_message_timeout: unable to find IM session");
 553                 g_free(with);
 554                 return TRUE;
 555         }
 556
 557         /* Remove timed-out message from unconfirmed list */
 558         key = get_unconfirmed_message_key(sipmsg_find_header(msg, "Call-ID"), sipmsg_parse_cseq(msg), with);
 559         found = remove_unconfirmed_message(session, key);
 560         g_free(key);
 561
 562         if (found) {
 563                 gchar *alias = get_buddy_alias(sipe_private, with);
 564                 sipe_user_present_message_undelivered(sipe_private, session, -1, -1,
 565                                                       alias ? alias : with,
 566                                                       msg->body);
 567                 g_free(alias);
 568         }
 569
 570         g_free(with);
 571         return TRUE;
 572 }
 573
 574 static void sipe_im_send_message(struct sipe_core_private *sipe_private,
 575                                  struct sip_dialog *dialog,
 576                                  const gchar *msg_body,
 577                                  const gchar *content_type)
 578 {
 579         gchar *hdr;
 580         gchar *tmp;
 581         char *msgtext = NULL;
 582         const gchar *msgr = "";
 583         gchar *tmp2 = NULL;
 584
 585         if (content_type == NULL)
 586                 content_type = "text/plain";
 587
 588         if (!g_str_has_prefix(content_type, "text/x-msmsgsinvite")) {
 589                 char *msgformat;
 590                 gchar *msgr_value;
 591
 592                 sipe_parse_html(msg_body, &msgformat, &msgtext);
 593                 SIPE_DEBUG_INFO("sipe_send_message: msgformat=%s", msgformat);
 594
 595                 msgr_value = sipmsg_get_msgr_string(msgformat);
 596                 g_free(msgformat);
 597                 if (msgr_value) {
 598                         msgr = tmp2 = g_strdup_printf(";msgr=%s", msgr_value);
 599                         g_free(msgr_value);
 600                 }
 601         } else {
 602                 msgtext = g_strdup(msg_body);
 603         }
 604
 605         tmp = get_contact(sipe_private);
 606         //hdr = g_strdup("Content-Type: text/plain; charset=UTF-8\r\n");
 607         //hdr = g_strdup("Content-Type: text/rtf\r\n");
 608         //hdr = g_strdup("Content-Type: text/plain; charset=UTF-8;msgr=WAAtAE0ATQBTAC....AoADQA\r\nSupported: timer\r\n");
 609
 610         hdr = g_strdup_printf("Contact: %s\r\nContent-Type: %s; charset=UTF-8%s\r\n", tmp, content_type, msgr);
 611         g_free(tmp);
 612         g_free(tmp2);
 613
 614         sip_transport_request_timeout(sipe_private,
 615                                       "MESSAGE",
 616                                       dialog->with,
 617                                       dialog->with,
 618                                       hdr,
 619                                       msgtext,
 620                                       dialog,
 621                                       process_message_response,
 622                                       60,
 623                                       process_message_timeout);
 624         g_free(msgtext);
 625         g_free(hdr);
 626 }
 627
 628 void sipe_im_process_queue(struct sipe_core_private *sipe_private,
 629                            struct sip_session *session)
 630 {
 631         GSList *entry2 = session->outgoing_message_queue;
 632         while (entry2) {
 633                 struct queued_message *msg = entry2->data;
 634
 635                 /* for multiparty chat or conference */
 636                 if (session->chat_session) {
 637                         gchar *who = sip_uri_self(sipe_private);
 638                         sipe_backend_chat_message(SIPE_CORE_PUBLIC,
 639                                                   session->chat_session->backend,
 640                                                   who,
 641                                                   msg->body);
 642                         g_free(who);
 643                 }
 644
 645                 SIPE_DIALOG_FOREACH {
 646                         if (dialog->outgoing_invite) continue; /* do not send messages as INVITE is not responded. */
 647
 648                         insert_unconfirmed_message(session, dialog, dialog->with,
 649                                                    msg->body, msg->content_type);
 650
 651                         sipe_im_send_message(sipe_private, dialog, msg->body, msg->content_type);
 652                 } SIPE_DIALOG_FOREACH_END;
 653
 654                 entry2 = sipe_session_dequeue_message(session);
 655         }
 656 }
 657
 658 struct unconfirmed_callback_data {
 659         const gchar *prefix;
 660         GSList *list;
 661 };
 662
 663 struct unconfirmed_message {
 664         const gchar *key;
 665         const struct queued_message *msg;
 666 };
 667
 668 static gint compare_cseq(gconstpointer a,
 669                          gconstpointer b)
 670 {
 671         return(((struct unconfirmed_message *) a)->msg->cseq -
 672                ((struct unconfirmed_message *) b)->msg->cseq);
 673 }
 674
 675 static void unconfirmed_message_callback(gpointer key,
 676                                          gpointer value,
 677                                          gpointer user_data)
 678 {
 679         const gchar *message_key = key;
 680         struct unconfirmed_callback_data *data = user_data;
 681
 682         SIPE_DEBUG_INFO("unconfirmed_message_callback: key %s", message_key);
 683
 684         /* Put messages with the same prefix on a list sorted by CSeq */
 685         if (g_str_has_prefix(message_key, data->prefix)) {
 686                 struct unconfirmed_message *msg = g_malloc(sizeof(struct unconfirmed_message));
 687                 msg->key = message_key;
 688                 msg->msg = value;
 689                 data->list = g_slist_insert_sorted(data->list, msg,
 690                                                    compare_cseq);
 691         }
 692 }
 693
 694 static void foreach_unconfirmed_message(struct sipe_core_private *sipe_private,
 695                                         struct sip_session *session,
 696                                         const gchar *callid,
 697                                         const gchar *with,
 698                                         unconfirmed_callback callback,
 699                                         const gchar *callback_data)
 700 {
 701         gchar *prefix = g_strdup_printf(UNCONFIRMED_KEY_TEMPLATE("MESSAGE", ""),
 702                                         callid, with);
 703         struct unconfirmed_callback_data data = { prefix, NULL };
 704
 705         SIPE_DEBUG_INFO("foreach_unconfirmed_message: prefix %s", prefix);
 706
 707         /* Generate list of matching unconfirmed messages */
 708         g_hash_table_foreach(session->unconfirmed_messages,
 709                              unconfirmed_message_callback,
 710                              &data);
 711         g_free(prefix);
 712
 713         /* Process list unconfirmed messages */
 714         if (data.list) {
 715                 GSList *entry;
 716
 717                 while ((entry = data.list) != NULL) {
 718                         struct unconfirmed_message *unconfirmed = entry->data;
 719                         data.list = g_slist_remove(data.list, unconfirmed);
 720
 721                         SIPE_DEBUG_INFO("foreach_unconfirmed_message: %s", unconfirmed->key);
 722                         (*callback)(sipe_private, session, unconfirmed->msg->body, callback_data);
 723
 724                         g_hash_table_remove(session->unconfirmed_messages, unconfirmed->key);
 725                         g_free(unconfirmed);
 726                 }
 727         }
 728 }
 729
 730 static void cancel_callback(struct sipe_core_private *sipe_private,
 731                             struct sip_session *session,
 732                             const gchar *body,
 733                             const gchar *with)
 734 {
 735         sipe_user_present_message_undelivered(sipe_private, session,
 736                                               -1, -1, with, body);
 737 }
 738
 739 void sipe_im_cancel_unconfirmed(struct sipe_core_private *sipe_private,
 740                                 struct sip_session *session,
 741                                 const gchar *callid,
 742                                 const gchar *with)
 743 {
 744         gchar *alias = get_buddy_alias(sipe_private, with);
 745
 746         SIPE_DEBUG_INFO("sipe_im_cancel_unconfirmed: with %s callid '%s'",
 747                         with, callid);
 748
 749         foreach_unconfirmed_message(sipe_private, session, callid, with,
 750                                     cancel_callback, alias ? alias : with);
 751         g_free(alias);
 752 }
 753
 754 static void reenqueue_callback(SIPE_UNUSED_PARAMETER struct sipe_core_private *sipe_private,
 755                                struct sip_session *session,
 756                                const gchar *body,
 757                                SIPE_UNUSED_PARAMETER const gchar *with)
 758 {
 759         sipe_session_enqueue_message(session, body, NULL);
 760 }
 761
 762 void sipe_im_reenqueue_unconfirmed(struct sipe_core_private *sipe_private,
 763                                    struct sip_session *session,
 764                                    const gchar *callid,
 765                                    const gchar *with)
 766 {
 767         /* Remember original list, start with an empty list  */
 768         GSList *first = session->outgoing_message_queue;
 769         session->outgoing_message_queue = NULL;
 770
 771         SIPE_DEBUG_INFO("sipe_im_reenqueue_unconfirmed: with %s callid '%s'",
 772                         with, callid);
 773
 774         /* Enqueue unconfirmed messages */
 775         foreach_unconfirmed_message(sipe_private, session, callid, with,
 776                                     reenqueue_callback, NULL);
 777
 778         /* Append or restore original list */
 779         if (session->outgoing_message_queue) {
 780                 GSList *last = g_slist_last(session->outgoing_message_queue);
 781                 last->next = first;
 782         } else {
 783                 session->outgoing_message_queue = first;
 784         }
 785 }
 786
 787 void sipe_core_im_send(struct sipe_core_public *sipe_public,
 788                        const gchar *who,
 789                        const gchar *what)
 790 {
 791         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 792         struct sip_session *session;
 793         struct sip_dialog *dialog;
 794         gchar *uri = sip_uri(who);
 795
 796         SIPE_DEBUG_INFO("sipe_core_im_send: '%s'", what);
 797
 798         session = sipe_session_find_or_add_im(sipe_private, uri);
 799         dialog = sipe_dialog_find(session, uri);
 800
 801         /* Queue the message */
 802         sipe_session_enqueue_message(session, what, NULL);
 803
 804         if (dialog && !dialog->outgoing_invite) {
 805                 sipe_im_process_queue(sipe_private, session);
 806         } else if (!dialog || !dialog->outgoing_invite) {
 807                 /* Need to send the INVITE to get the outgoing dialog setup */
 808                 sipe_im_invite(sipe_private, session, uri, what, NULL, NULL, FALSE);
 809         }
 810
 811         g_free(uri);
 812 }
 813
 814 void sipe_im_cancel_dangling(struct sipe_core_private *sipe_private,
 815                              struct sip_session *session,
 816                              struct sip_dialog *dialog,
 817                              const gchar *with,
 818                              unconfirmed_callback callback)
 819 {
 820         SIPE_DEBUG_INFO_NOFORMAT("sipe_im_cancel_dangling: assuming dangling IM session, dropping it.");
 821         sip_transport_bye(sipe_private, dialog);
 822
 823         (*callback)(sipe_private, session, dialog->callid, with);
 824
 825         /* We might not get a valid reply to our BYE,
 826            so make sure the dialog is removed for sure. */
 827         sipe_dialog_remove(session, with);
 828         /* dialog is no longer valid */
 829 }
 830
 831 void sipe_im_topic(struct sipe_core_private *sipe_private,
 832                    struct sip_session *session,
 833                    const gchar *topic)
 834 {
 835         g_free(session->subject);
 836         session->subject = g_strdup(topic);
 837         sipe_backend_im_topic(SIPE_CORE_PUBLIC, session->with, topic);
 838 }
 839
 840 void process_incoming_info_conversation(struct sipe_core_private *sipe_private,
 841                                         struct sipmsg *msg)
 842 {
 843         sipe_xml *xml = sipe_xml_parse(msg->body, msg->bodylen);
 844         const gchar *from = NULL;
 845         const gchar *subject = NULL;
 846
 847
 848         if (!xml)
 849                 return;
 850
 851         if (sipe_strequal(sipe_xml_name(xml), "ConversationInfo")) {
 852                 const sipe_xml *node = sipe_xml_child(xml, "From");
 853                 if (node)
 854                         from = sipe_xml_attribute(node, "uri");
 855
 856                 node = sipe_xml_child(xml, "Subject");
 857                 if (node)
 858                         subject = sipe_xml_data(node);
 859         }
 860
 861         if (from && subject) {
 862                 struct sip_session *session;
 863                 session = sipe_session_find_im(sipe_private, from);
 864
 865                 if (session)
 866                         sipe_im_topic(sipe_private, session, subject);
 867         }
 868
 869         sipe_xml_free(xml);
 870
 871         sip_transport_response(sipe_private, msg, 200, "OK", NULL);
 872 }
 873
 874 /*
 875   Local Variables:
 876   mode: c
 877   c-file-style: "bsd"
 878   indent-tabs-mode: t
 879   tab-width: 8
 880   End:
 881 */