src/core/sipe-im.c

   1 /**
   2  * @file sipe-im.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2011-12 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-buddy.h"
  37 #include "sipe-chat.h"
  38 #include "sipe-core.h"
  39 #include "sipe-core-private.h"
  40 #include "sipe-dialog.h"
  41 #include "sipe-ft.h"
  42 #include "sipe-groupchat.h"
  43 #include "sipe-im.h"
  44 #include "sipe-incoming.h"
  45 #include "sipe-nls.h"
  46 #include "sipe-session.h"
  47 #include "sipe-user.h"
  48 #include "sipe-utils.h"
  49 #include "sipe-xml.h"
  50
  51 /*
  52  * Hash key template for unconfirmed messages
  53  *
  54  *                                             Call-ID      Recipient URI (or empty)
  55  *                                               |               |
  56  *                                               |  SIP method   |    CSeq
  57  *                                               |     |         |     |             */
  58 #define UNCONFIRMED_KEY_TEMPLATE(method, cseq) "<%s><" method "><%s><" cseq
  59
  60 /* key must be g_free()'d */
  61 static gchar *get_unconfirmed_message_key(const gchar *callid,
  62                                           unsigned int cseq,
  63                                           const gchar *with)
  64 {
  65         return(g_strdup_printf(UNCONFIRMED_KEY_TEMPLATE("%s", "%d>"),
  66                                callid,
  67                                with ? "MESSAGE" : "INVITE",
  68                                with ? with : "",
  69                                cseq));
  70 }
  71
  72 static void insert_unconfirmed_message(struct sip_session *session,
  73                                        struct sip_dialog *dialog,
  74                                        const gchar *with,
  75                                        const gchar *body,
  76                                        const gchar *content_type)
  77 {
  78         gchar *key = get_unconfirmed_message_key(dialog->callid, dialog->cseq + 1, with);
  79         struct queued_message *message = g_new0(struct queued_message, 1);
  80
  81         message->body = g_strdup(body);
  82         if (content_type != NULL)
  83                 message->content_type = g_strdup(content_type);
  84         message->cseq = dialog->cseq + 1;
  85
  86         g_hash_table_insert(session->unconfirmed_messages, key, message);
  87         SIPE_DEBUG_INFO("insert_unconfirmed_message: added %s to list (count=%d)",
  88                         key, g_hash_table_size(session->unconfirmed_messages));
  89 }
  90
  91 static gboolean remove_unconfirmed_message(struct sip_session *session,
  92                                            const gchar *key)
  93 {
  94         gboolean found = g_hash_table_remove(session->unconfirmed_messages, key);
  95         if (found) {
  96                 SIPE_DEBUG_INFO("remove_unconfirmed_message: removed %s from list (count=%d)",
  97                                 key, g_hash_table_size(session->unconfirmed_messages));
  98         } else {
  99                 SIPE_DEBUG_INFO("remove_unconfirmed_message: key %s not found",
 100                                 key);
 101         }
 102         return(found);
 103 }
 104
 105 static void sipe_refer_notify(struct sipe_core_private *sipe_private,
 106                               struct sip_session *session,
 107                               const gchar *who,
 108                               int status,
 109                               const gchar *desc)
 110 {
 111         gchar *hdr;
 112         gchar *body;
 113         struct sip_dialog *dialog = sipe_dialog_find(session, who);
 114
 115         hdr = g_strdup_printf(
 116                 "Event: refer\r\n"
 117                 "Subscription-State: %s\r\n"
 118                 "Content-Type: message/sipfrag\r\n",
 119                 status >= 200 ? "terminated" : "active");
 120
 121         body = g_strdup_printf(
 122                 "SIP/2.0 %d %s\r\n",
 123                 status, desc);
 124
 125         sip_transport_request(sipe_private,
 126                               "NOTIFY",
 127                               who,
 128                               who,
 129                               hdr,
 130                               body,
 131                               dialog,
 132                               NULL);
 133
 134         g_free(hdr);
 135         g_free(body);
 136 }
 137
 138 static gboolean process_invite_response(struct sipe_core_private *sipe_private,
 139                                         struct sipmsg *msg,
 140                                         struct transaction *trans)
 141 {
 142         gchar *with = parse_from(sipmsg_find_header(msg, "To"));
 143         struct sip_session *session;
 144         struct sip_dialog *dialog;
 145         gchar *key;
 146         struct queued_message *message;
 147         struct sipmsg *request_msg = trans->msg;
 148
 149         const gchar *callid = sipmsg_find_header(msg, "Call-ID");
 150         gchar *referred_by;
 151
 152         session = sipe_session_find_chat_or_im(sipe_private, callid, with);
 153         if (!session) {
 154                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: unable to find IM session");
 155                 g_free(with);
 156                 return FALSE;
 157         }
 158
 159         dialog = sipe_dialog_find(session, with);
 160         if (!dialog) {
 161                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: session outgoing dialog is NULL");
 162                 g_free(with);
 163                 return FALSE;
 164         }
 165
 166         sipe_dialog_parse(dialog, msg, TRUE);
 167
 168         key = get_unconfirmed_message_key(dialog->callid, sipmsg_parse_cseq(msg), NULL);
 169         message = g_hash_table_lookup(session->unconfirmed_messages, key);
 170
 171         if (msg->response != 200) {
 172                 gchar *alias = sipe_buddy_get_alias(sipe_private, with);
 173                 int warning = sipmsg_parse_warning(msg, NULL);
 174
 175                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: INVITE response not 200");
 176
 177                 /* cancel file transfer as rejected by server */
 178                 if (msg->response == 606 &&     /* Not acceptable all. */
 179                     warning == 309 &&           /* Message contents not allowed by policy */
 180                     message && g_str_has_prefix(message->content_type, "text/x-msmsgsinvite"))
 181                 {
 182                         GSList *parsed_body = sipe_ft_parse_msg_body(message->body);
 183                         sipe_ft_incoming_cancel(dialog, parsed_body);
 184                         sipe_utils_nameval_free(parsed_body);
 185                 }
 186
 187                 if (message) {
 188                         /* generate error for each unprocessed message */
 189                         GSList *entry = session->outgoing_message_queue;
 190                         while (entry) {
 191                                 struct queued_message *queued = entry->data;
 192                                 sipe_user_present_message_undelivered(sipe_private, session, msg->response, warning, alias ? alias : with, queued->body);
 193                                 entry = sipe_session_dequeue_message(session);
 194                         }
 195                 } else {
 196                         /* generate one error and remove all unprocessed messages */
 197                         gchar *tmp_msg = g_strdup_printf(_("Failed to invite %s"), alias ? alias : with);
 198                         sipe_user_present_error(sipe_private, session, tmp_msg);
 199                         g_free(tmp_msg);
 200                         while (sipe_session_dequeue_message(session));
 201                 }
 202                 g_free(alias);
 203
 204                 remove_unconfirmed_message(session, key);
 205                 /* message is no longer valid */
 206                 g_free(key);
 207
 208                 sipe_dialog_remove(session, with);
 209                 g_free(with);
 210
 211                 if (session->is_groupchat) {
 212                         sipe_groupchat_invite_failed(sipe_private, session);
 213                         /* session is no longer valid */
 214                 }
 215
 216                 return FALSE;
 217         }
 218
 219         dialog->cseq = 0;
 220         sip_transport_ack(sipe_private, dialog);
 221         dialog->outgoing_invite = NULL;
 222         dialog->is_established = TRUE;
 223
 224         referred_by = parse_from(sipmsg_find_header(request_msg, "Referred-By"));
 225         if (referred_by) {
 226                 sipe_refer_notify(sipe_private, session, referred_by, 200, "OK");
 227                 g_free(referred_by);
 228         }
 229
 230         /* add user to chat if it is a multiparty session */
 231         if (session->chat_session &&
 232             (session->chat_session->type == SIPE_CHAT_TYPE_MULTIPARTY)) {
 233                 sipe_backend_chat_add(session->chat_session->backend,
 234                                       with,
 235                                       TRUE);
 236         }
 237
 238         if (session->is_groupchat) {
 239                 sipe_groupchat_invite_response(sipe_private, dialog);
 240         }
 241
 242         if(g_slist_find_custom(dialog->supported, "ms-text-format", (GCompareFunc)g_ascii_strcasecmp)) {
 243                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_response: remote system accepted message in INVITE");
 244                 sipe_session_dequeue_message(session);
 245         }
 246
 247         sipe_im_process_queue(sipe_private, session);
 248
 249         remove_unconfirmed_message(session, key);
 250
 251         g_free(key);
 252         g_free(with);
 253         return TRUE;
 254 }
 255
 256 /* EndPoints: "alice alisson" <sip:alice@atlanta.local>, <sip:bob@atlanta.local>;epid=ebca82d94d, <sip:carol@atlanta.local> */
 257 static gchar *get_end_points(struct sipe_core_private *sipe_private,
 258                              struct sip_session *session)
 259 {
 260         gchar *res;
 261
 262         if (session == NULL) {
 263                 return NULL;
 264         }
 265
 266         res = g_strdup_printf("<sip:%s>", sipe_private->username);
 267
 268         SIPE_DIALOG_FOREACH {
 269                 gchar *tmp = res;
 270                 res = g_strdup_printf("%s, <%s>", res, dialog->with);
 271                 g_free(tmp);
 272
 273                 if (dialog->theirepid) {
 274                         tmp = res;
 275                         res = g_strdup_printf("%s;epid=%s", res, dialog->theirepid);
 276                         g_free(tmp);
 277                 }
 278         } SIPE_DIALOG_FOREACH_END;
 279
 280         return res;
 281 }
 282
 283 void
 284 sipe_im_invite(struct sipe_core_private *sipe_private,
 285                struct sip_session *session,
 286                const gchar *who,
 287                const gchar *msg_body,
 288                const gchar *content_type,
 289                const gchar *referred_by,
 290                const gboolean is_triggered)
 291 {
 292         gchar *hdr;
 293         gchar *to;
 294         gchar *contact;
 295         gchar *body;
 296         gchar *self;
 297         char  *ms_text_format = NULL;
 298         char  *ms_conversation_id = NULL;
 299         gchar *roster_manager;
 300         gchar *end_points;
 301         gchar *referred_by_str;
 302         gboolean is_multiparty =
 303                 session->chat_session &&
 304                 (session->chat_session->type == SIPE_CHAT_TYPE_MULTIPARTY);
 305         struct sip_dialog *dialog = sipe_dialog_find(session, who);
 306
 307         if (dialog && dialog->is_established) {
 308                 SIPE_DEBUG_INFO("session with %s already has a dialog open", who);
 309                 return;
 310         }
 311
 312         if (!dialog) {
 313                 dialog = sipe_dialog_add(session);
 314                 dialog->callid = session->callid ? g_strdup(session->callid) : gencallid();
 315                 dialog->with = g_strdup(who);
 316         }
 317
 318         if (!(dialog->ourtag)) {
 319                 dialog->ourtag = gentag();
 320         }
 321
 322         to = sip_uri(who);
 323
 324         if (msg_body) {
 325                 char *msgtext = NULL;
 326                 char *base64_msg;
 327                 const gchar *msgr = "";
 328                 gchar *tmp = NULL;
 329
 330                 if (!g_str_has_prefix(content_type, "text/x-msmsgsinvite")) {
 331                         char *msgformat;
 332                         gchar *msgr_value;
 333
 334                         sipe_parse_html(msg_body, &msgformat, &msgtext);
 335                         SIPE_DEBUG_INFO("sipe_invite: msgformat=%s", msgformat);
 336
 337                         msgr_value = sipmsg_get_msgr_string(msgformat);
 338                         g_free(msgformat);
 339                         if (msgr_value) {
 340                                 msgr = tmp = g_strdup_printf(";msgr=%s", msgr_value);
 341                                 g_free(msgr_value);
 342                         }
 343
 344                         /* When Sipe reconnects after a crash, we are not able
 345                          * to send messages to contacts with which we had open
 346                          * conversations when the crash occured. Server sends
 347                          * error response with reason="This client has an IM
 348                          * session with the same conversation ID"
 349                          *
 350                          * Setting random Ms-Conversation-ID prevents this problem
 351                          * so we can continue the conversation. */
 352                         ms_conversation_id = g_strdup_printf("Ms-Conversation-ID: %u\r\n",
 353                                                              rand() % 1000000000);
 354                 } else {
 355                         msgtext = g_strdup(msg_body);
 356                 }
 357
 358                 base64_msg = g_base64_encode((guchar*) msgtext, strlen(msgtext));
 359                 ms_text_format = g_strdup_printf("ms-text-format: %s; charset=UTF-8%s;ms-body=%s\r\n",
 360                                                  content_type ? content_type : "text/plain",
 361                                                  msgr,
 362                                                  base64_msg);
 363                 g_free(msgtext);
 364                 g_free(tmp);
 365                 g_free(base64_msg);
 366
 367                 insert_unconfirmed_message(session, dialog, NULL,
 368                                            msg_body, content_type);
 369         }
 370
 371         contact = get_contact(sipe_private);
 372         end_points = get_end_points(sipe_private, session);
 373         self = sip_uri_self(sipe_private);
 374         roster_manager = g_strdup_printf(
 375                 "Roster-Manager: %s\r\n"
 376                 "EndPoints: %s\r\n",
 377                 self,
 378                 end_points);
 379         referred_by_str = referred_by ?
 380                 g_strdup_printf(
 381                         "Referred-By: %s\r\n",
 382                         referred_by)
 383                 : g_strdup("");
 384         hdr = g_strdup_printf(
 385                 "Supported: ms-sender\r\n"
 386                 "%s"
 387                 "%s"
 388                 "%s"
 389                 "%s"
 390                 "Contact: %s\r\n%s"
 391                 "%s"
 392                 "Content-Type: application/sdp\r\n",
 393                 is_multiparty && sipe_strcase_equal(session->chat_session->id, self) ? roster_manager : "",
 394                 referred_by_str,
 395                 is_triggered ? "TriggeredInvite: TRUE\r\n" : "",
 396                 is_triggered || is_multiparty ? "Require: com.microsoft.rtc-multiparty\r\n" : "",
 397                 contact,
 398                 ms_text_format ? ms_text_format : "",
 399                 ms_conversation_id ? ms_conversation_id : "");
 400         g_free(ms_text_format);
 401         g_free(ms_conversation_id);
 402         g_free(self);
 403
 404         body = g_strdup_printf(
 405                 "v=0\r\n"
 406                 "o=- 0 0 IN IP4 %s\r\n"
 407                 "s=session\r\n"
 408                 "c=IN IP4 %s\r\n"
 409                 "t=0 0\r\n"
 410                 "m=%s %d sip null\r\n"
 411                 "a=accept-types:" SDP_ACCEPT_TYPES "\r\n",
 412                 sipe_backend_network_ip_address(SIPE_CORE_PUBLIC),
 413                 sipe_backend_network_ip_address(SIPE_CORE_PUBLIC),
 414                 SIPE_CORE_PRIVATE_FLAG_IS(OCS2007) ? "message" : "x-ms-message",
 415                 sip_transport_port(sipe_private));
 416
 417         dialog->outgoing_invite = sip_transport_request(sipe_private,
 418                                                         "INVITE",
 419                                                         to,
 420                                                         to,
 421                                                         hdr,
 422                                                         body,
 423                                                         dialog,
 424                                                         process_invite_response);
 425
 426         g_free(to);
 427         g_free(roster_manager);
 428         g_free(end_points);
 429         g_free(referred_by_str);
 430         g_free(body);
 431         g_free(hdr);
 432         g_free(contact);
 433 }
 434
 435 static gboolean
 436 process_message_response(struct sipe_core_private *sipe_private,
 437                          struct sipmsg *msg,
 438                          SIPE_UNUSED_PARAMETER struct transaction *trans)
 439 {
 440         gboolean ret = TRUE;
 441         gchar *with = parse_from(sipmsg_find_header(msg, "To"));
 442         const gchar *callid = sipmsg_find_header(msg, "Call-ID");
 443         struct sip_session *session = sipe_session_find_chat_or_im(sipe_private, callid, with);
 444         struct sip_dialog *dialog;
 445         gchar *key;
 446         struct queued_message *message;
 447
 448         if (!session) {
 449                 SIPE_DEBUG_INFO_NOFORMAT("process_message_response: unable to find IM session");
 450                 g_free(with);
 451                 return FALSE;
 452         }
 453
 454         dialog = sipe_dialog_find(session, with);
 455         if (!dialog) {
 456                 SIPE_DEBUG_INFO_NOFORMAT("process_message_response: session outgoing dialog is NULL");
 457                 g_free(with);
 458                 return FALSE;
 459         }
 460
 461         key = get_unconfirmed_message_key(sipmsg_find_header(msg, "Call-ID"), sipmsg_parse_cseq(msg), with);
 462         message = g_hash_table_lookup(session->unconfirmed_messages, key);
 463
 464         if (msg->response >= 400) {
 465                 int warning = sipmsg_parse_warning(msg, NULL);
 466
 467                 SIPE_DEBUG_INFO_NOFORMAT("process_message_response: MESSAGE response >= 400");
 468
 469                 /* cancel file transfer as rejected by server */
 470                 if (msg->response == 606 &&     /* Not acceptable all. */
 471                     warning == 309 &&           /* Message contents not allowed by policy */
 472                     message && g_str_has_prefix(message->content_type, "text/x-msmsgsinvite"))
 473                 {
 474                         GSList *parsed_body = sipe_ft_parse_msg_body(msg->body);
 475                         sipe_ft_incoming_cancel(dialog, parsed_body);
 476                         sipe_utils_nameval_free(parsed_body);
 477                 }
 478
 479                 /* drop dangling IM sessions: assume that BYE from remote never reached us */
 480                 if (msg->response == 408 || /* Request timeout */
 481                     msg->response == 480 || /* Temporarily Unavailable */
 482                     msg->response == 481) { /* Call/Transaction Does Not Exist */
 483                         sipe_im_cancel_dangling(sipe_private, session, dialog, with,
 484                                                 sipe_im_cancel_unconfirmed);
 485                         /* dialog is no longer valid */
 486                 } else {
 487                         gchar *alias = sipe_buddy_get_alias(sipe_private, with);
 488                         sipe_user_present_message_undelivered(sipe_private, session,
 489                                                               msg->response, warning,
 490                                                               alias ? alias : with,
 491                                                               message ? message->body : NULL);
 492                         remove_unconfirmed_message(session, key);
 493                         /* message is no longer valid */
 494                         g_free(alias);
 495                 }
 496
 497                 ret = FALSE;
 498         } else {
 499                 const gchar *message_id = sipmsg_find_header(msg, "Message-Id");
 500                 if (message_id) {
 501                         g_hash_table_insert(session->conf_unconfirmed_messages, g_strdup(message_id), g_strdup(message->body));
 502                         SIPE_DEBUG_INFO("process_message_response: added message with id %s to conf_unconfirmed_messages(count=%d)",
 503                                         message_id, g_hash_table_size(session->conf_unconfirmed_messages));
 504                 }
 505                 remove_unconfirmed_message(session, key);
 506         }
 507
 508         g_free(key);
 509         g_free(with);
 510
 511         if (ret) sipe_im_process_queue(sipe_private, session);
 512         return ret;
 513 }
 514
 515 #ifndef ENABLE_OCS2005_MESSAGE_HACK
 516 /*
 517  * Hack to circumvent problems reported in the bug report
 518  *
 519  *        #3267073 - False "could not be delivered" errors
 520  *
 521  * The logs provided by the reporters indicate that OCS2005 clients DO NOT
 522  * acknowledge our SIP MESSAGEs. Therefore the message timeout is triggered
 523  * and messages are reported to the user as not delivered.
 524  *
 525  * Either this is a bug in the OCS2005 client or we do something wrong in our
 526  * SIP MESSAGEs. This hack removes the message timeout and is provided for
 527  * users who need to communicate with a still existing OCS2005 user base.
 528  *
 529  * Do not enable it by default!
 530  */
 531 static gboolean
 532 process_message_timeout(struct sipe_core_private *sipe_private,
 533                         struct sipmsg *msg,
 534                         SIPE_UNUSED_PARAMETER struct transaction *trans)
 535 {
 536         gchar *with = parse_from(sipmsg_find_header(msg, "To"));
 537         const gchar *callid = sipmsg_find_header(msg, "Call-ID");
 538         struct sip_session *session = sipe_session_find_chat_or_im(sipe_private, callid, with);
 539         gchar *key;
 540         gboolean found;
 541
 542         if (!session) {
 543                 SIPE_DEBUG_INFO_NOFORMAT("process_message_timeout: unable to find IM session");
 544                 g_free(with);
 545                 return TRUE;
 546         }
 547
 548         /* Remove timed-out message from unconfirmed list */
 549         key = get_unconfirmed_message_key(sipmsg_find_header(msg, "Call-ID"), sipmsg_parse_cseq(msg), with);
 550         found = remove_unconfirmed_message(session, key);
 551         g_free(key);
 552
 553         if (found) {
 554                 gchar *alias = sipe_buddy_get_alias(sipe_private, with);
 555                 sipe_user_present_message_undelivered(sipe_private, session, -1, -1,
 556                                                       alias ? alias : with,
 557                                                       msg->body);
 558                 g_free(alias);
 559         }
 560
 561         g_free(with);
 562         return TRUE;
 563 }
 564 #endif
 565
 566 static void sipe_im_send_message(struct sipe_core_private *sipe_private,
 567                                  struct sip_dialog *dialog,
 568                                  const gchar *msg_body,
 569                                  const gchar *content_type)
 570 {
 571         gchar *hdr;
 572         gchar *tmp;
 573         char *msgtext = NULL;
 574         const gchar *msgr = "";
 575         gchar *tmp2 = NULL;
 576
 577         if (content_type == NULL)
 578                 content_type = "text/plain";
 579
 580         if (!g_str_has_prefix(content_type, "text/x-msmsgsinvite")) {
 581                 char *msgformat;
 582                 gchar *msgr_value;
 583
 584                 sipe_parse_html(msg_body, &msgformat, &msgtext);
 585                 SIPE_DEBUG_INFO("sipe_send_message: msgformat=%s", msgformat);
 586
 587                 msgr_value = sipmsg_get_msgr_string(msgformat);
 588                 g_free(msgformat);
 589                 if (msgr_value) {
 590                         msgr = tmp2 = g_strdup_printf(";msgr=%s", msgr_value);
 591                         g_free(msgr_value);
 592                 }
 593         } else {
 594                 msgtext = g_strdup(msg_body);
 595         }
 596
 597         tmp = get_contact(sipe_private);
 598         //hdr = g_strdup("Content-Type: text/plain; charset=UTF-8\r\n");
 599         //hdr = g_strdup("Content-Type: text/rtf\r\n");
 600         //hdr = g_strdup("Content-Type: text/plain; charset=UTF-8;msgr=WAAtAE0ATQBTAC....AoADQA\r\nSupported: timer\r\n");
 601
 602         hdr = g_strdup_printf("Contact: %s\r\nContent-Type: %s; charset=UTF-8%s\r\n", tmp, content_type, msgr);
 603         g_free(tmp);
 604         g_free(tmp2);
 605
 606 #ifdef ENABLE_OCS2005_MESSAGE_HACK
 607         sip_transport_request(
 608 #else
 609         sip_transport_request_timeout(
 610 #endif
 611                                       sipe_private,
 612                                       "MESSAGE",
 613                                       dialog->with,
 614                                       dialog->with,
 615                                       hdr,
 616                                       msgtext,
 617                                       dialog,
 618                                       process_message_response
 619 #ifndef ENABLE_OCS2005_MESSAGE_HACK
 620                                       ,
 621                                       60,
 622                                       process_message_timeout
 623 #endif
 624                                      );
 625         g_free(msgtext);
 626         g_free(hdr);
 627 }
 628
 629 void sipe_im_process_queue(struct sipe_core_private *sipe_private,
 630                            struct sip_session *session)
 631 {
 632         GSList *entry2 = session->outgoing_message_queue;
 633         while (entry2) {
 634                 struct queued_message *msg = entry2->data;
 635
 636                 /* for multiparty chat or conference */
 637                 if (session->chat_session) {
 638                         gchar *who = sip_uri_self(sipe_private);
 639                         sipe_backend_chat_message(SIPE_CORE_PUBLIC,
 640                                                   session->chat_session->backend,
 641                                                   who,
 642                                                   msg->body);
 643                         g_free(who);
 644                 }
 645
 646                 SIPE_DIALOG_FOREACH {
 647                         if (dialog->outgoing_invite) continue; /* do not send messages as INVITE is not responded. */
 648
 649                         insert_unconfirmed_message(session, dialog, dialog->with,
 650                                                    msg->body, msg->content_type);
 651
 652                         sipe_im_send_message(sipe_private, dialog, msg->body, msg->content_type);
 653                 } SIPE_DIALOG_FOREACH_END;
 654
 655                 entry2 = sipe_session_dequeue_message(session);
 656         }
 657 }
 658
 659 struct unconfirmed_callback_data {
 660         const gchar *prefix;
 661         GSList *list;
 662 };
 663
 664 struct unconfirmed_message {
 665         const gchar *key;
 666         const struct queued_message *msg;
 667 };
 668
 669 static gint compare_cseq(gconstpointer a,
 670                          gconstpointer b)
 671 {
 672         return(((struct unconfirmed_message *) a)->msg->cseq -
 673                ((struct unconfirmed_message *) b)->msg->cseq);
 674 }
 675
 676 static void unconfirmed_message_callback(gpointer key,
 677                                          gpointer value,
 678                                          gpointer user_data)
 679 {
 680         const gchar *message_key = key;
 681         struct unconfirmed_callback_data *data = user_data;
 682
 683         SIPE_DEBUG_INFO("unconfirmed_message_callback: key %s", message_key);
 684
 685         /* Put messages with the same prefix on a list sorted by CSeq */
 686         if (g_str_has_prefix(message_key, data->prefix)) {
 687                 struct unconfirmed_message *msg = g_malloc(sizeof(struct unconfirmed_message));
 688                 msg->key = message_key;
 689                 msg->msg = value;
 690                 data->list = g_slist_insert_sorted(data->list, msg,
 691                                                    compare_cseq);
 692         }
 693 }
 694
 695 static void foreach_unconfirmed_message(struct sipe_core_private *sipe_private,
 696                                         struct sip_session *session,
 697                                         const gchar *callid,
 698                                         const gchar *with,
 699                                         unconfirmed_callback callback,
 700                                         const gchar *callback_data)
 701 {
 702         gchar *prefix = g_strdup_printf(UNCONFIRMED_KEY_TEMPLATE("MESSAGE", ""),
 703                                         callid, with);
 704         struct unconfirmed_callback_data data = { prefix, NULL };
 705
 706         SIPE_DEBUG_INFO("foreach_unconfirmed_message: prefix %s", prefix);
 707
 708         /* Generate list of matching unconfirmed messages */
 709         g_hash_table_foreach(session->unconfirmed_messages,
 710                              unconfirmed_message_callback,
 711                              &data);
 712         g_free(prefix);
 713
 714         /* Process list unconfirmed messages */
 715         if (data.list) {
 716                 GSList *entry;
 717
 718                 while ((entry = data.list) != NULL) {
 719                         struct unconfirmed_message *unconfirmed = entry->data;
 720                         data.list = g_slist_remove(data.list, unconfirmed);
 721
 722                         SIPE_DEBUG_INFO("foreach_unconfirmed_message: %s", unconfirmed->key);
 723                         (*callback)(sipe_private, session, unconfirmed->msg->body, callback_data);
 724
 725                         g_hash_table_remove(session->unconfirmed_messages, unconfirmed->key);
 726                         g_free(unconfirmed);
 727                 }
 728         }
 729 }
 730
 731 static void cancel_callback(struct sipe_core_private *sipe_private,
 732                             struct sip_session *session,
 733                             const gchar *body,
 734                             const gchar *with)
 735 {
 736         sipe_user_present_message_undelivered(sipe_private, session,
 737                                               -1, -1, with, body);
 738 }
 739
 740 void sipe_im_cancel_unconfirmed(struct sipe_core_private *sipe_private,
 741                                 struct sip_session *session,
 742                                 const gchar *callid,
 743                                 const gchar *with)
 744 {
 745         gchar *alias = sipe_buddy_get_alias(sipe_private, with);
 746
 747         SIPE_DEBUG_INFO("sipe_im_cancel_unconfirmed: with %s callid '%s'",
 748                         with, callid);
 749
 750         foreach_unconfirmed_message(sipe_private, session, callid, with,
 751                                     cancel_callback, alias ? alias : with);
 752         g_free(alias);
 753 }
 754
 755 static void reenqueue_callback(SIPE_UNUSED_PARAMETER struct sipe_core_private *sipe_private,
 756                                struct sip_session *session,
 757                                const gchar *body,
 758                                SIPE_UNUSED_PARAMETER const gchar *with)
 759 {
 760         sipe_session_enqueue_message(session, body, NULL);
 761 }
 762
 763 void sipe_im_reenqueue_unconfirmed(struct sipe_core_private *sipe_private,
 764                                    struct sip_session *session,
 765                                    const gchar *callid,
 766                                    const gchar *with)
 767 {
 768         /* Remember original list, start with an empty list  */
 769         GSList *first = session->outgoing_message_queue;
 770         session->outgoing_message_queue = NULL;
 771
 772         SIPE_DEBUG_INFO("sipe_im_reenqueue_unconfirmed: with %s callid '%s'",
 773                         with, callid);
 774
 775         /* Enqueue unconfirmed messages */
 776         foreach_unconfirmed_message(sipe_private, session, callid, with,
 777                                     reenqueue_callback, NULL);
 778
 779         /* Append or restore original list */
 780         if (session->outgoing_message_queue) {
 781                 GSList *last = g_slist_last(session->outgoing_message_queue);
 782                 last->next = first;
 783         } else {
 784                 session->outgoing_message_queue = first;
 785         }
 786 }
 787
 788 void sipe_core_im_send(struct sipe_core_public *sipe_public,
 789                        const gchar *who,
 790                        const gchar *what)
 791 {
 792         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 793         struct sip_session *session;
 794         struct sip_dialog *dialog;
 795         gchar *uri = sip_uri(who);
 796
 797         SIPE_DEBUG_INFO("sipe_core_im_send: '%s'", what);
 798
 799         session = sipe_session_find_or_add_im(sipe_private, uri);
 800         dialog = sipe_dialog_find(session, uri);
 801
 802         /* Queue the message */
 803         sipe_session_enqueue_message(session, what, NULL);
 804
 805         if (dialog && !dialog->outgoing_invite) {
 806                 if (dialog->delayed_invite)
 807                         sipe_incoming_cancel_delayed_invite(sipe_private,
 808                                                             dialog);
 809                 sipe_im_process_queue(sipe_private, session);
 810         } else if (!dialog || !dialog->outgoing_invite) {
 811                 /* Need to send the INVITE to get the outgoing dialog setup */
 812                 sipe_im_invite(sipe_private, session, uri, what, NULL, NULL, FALSE);
 813         }
 814
 815         g_free(uri);
 816 }
 817
 818 void sipe_core_im_close(struct sipe_core_public *sipe_public,
 819                         const gchar *who)
 820 {
 821         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 822
 823         SIPE_DEBUG_INFO("sipe_core_im_close: conversation with %s closed", who);
 824         sipe_session_close(sipe_private,
 825                            sipe_session_find_im(sipe_private, who));
 826 }
 827
 828 void sipe_im_cancel_dangling(struct sipe_core_private *sipe_private,
 829                              struct sip_session *session,
 830                              struct sip_dialog *dialog,
 831                              const gchar *with,
 832                              unconfirmed_callback callback)
 833 {
 834         SIPE_DEBUG_INFO_NOFORMAT("sipe_im_cancel_dangling: assuming dangling IM session, dropping it.");
 835         sip_transport_bye(sipe_private, dialog);
 836
 837         (*callback)(sipe_private, session, dialog->callid, with);
 838
 839         /* We might not get a valid reply to our BYE,
 840            so make sure the dialog is removed for sure. */
 841         sipe_dialog_remove(session, with);
 842         /* dialog is no longer valid */
 843 }
 844
 845 void sipe_im_topic(struct sipe_core_private *sipe_private,
 846                    struct sip_session *session,
 847                    const gchar *topic)
 848 {
 849         g_free(session->subject);
 850         session->subject = g_strdup(topic);
 851         sipe_backend_im_topic(SIPE_CORE_PUBLIC, session->with, topic);
 852 }
 853
 854 void process_incoming_info_conversation(struct sipe_core_private *sipe_private,
 855                                         struct sipmsg *msg)
 856 {
 857         sipe_xml *xml = sipe_xml_parse(msg->body, msg->bodylen);
 858         const gchar *from = NULL;
 859         const gchar *subject = NULL;
 860
 861
 862         if (!xml)
 863                 return;
 864
 865         if (sipe_strequal(sipe_xml_name(xml), "ConversationInfo")) {
 866                 const sipe_xml *node = sipe_xml_child(xml, "From");
 867                 if (node)
 868                         from = sipe_xml_attribute(node, "uri");
 869
 870                 node = sipe_xml_child(xml, "Subject");
 871                 if (node)
 872                         subject = sipe_xml_data(node);
 873         }
 874
 875         if (from && subject) {
 876                 struct sip_session *session;
 877                 session = sipe_session_find_im(sipe_private, from);
 878
 879                 if (session)
 880                         sipe_im_topic(sipe_private, session, subject);
 881         }
 882
 883         sipe_xml_free(xml);
 884
 885         sip_transport_response(sipe_private, msg, 200, "OK", NULL);
 886 }
 887
 888 /*
 889   Local Variables:
 890   mode: c
 891   c-file-style: "bsd"
 892   indent-tabs-mode: t
 893   tab-width: 8
 894   End:
 895 */