src/core/sipe-conf.c

   1 /**
   2  * @file sipe-conf.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2010-2017 SIPE Project <http://sipe.sourceforge.net/>
   7  * Copyright (C) 2009 pier11 <pier11@operamail.com>
   8  *
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 /**
  26  * Documentation references:
  27  *
  28  * Microsoft DevNet: [MS-CONFIM]: Centralized Conference Control Protocol:
  29  *                                Instant Messaging Extensions
  30  *  <http://msdn.microsoft.com/en-us/library/cc431500%28v=office.12%29.aspx>
  31  *
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include "config.h"
  36 #endif
  37
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <time.h>
  41
  42 #include <glib.h>
  43
  44 #include "sipe-common.h"
  45 #include "sipmsg.h"
  46 #include "sip-transport.h"
  47 #include "sipe-backend.h"
  48 #include "sipe-buddy.h"
  49 #include "sipe-core.h"
  50 #include "sipe-chat.h"
  51 #include "sipe-conf.h"
  52 #include "sipe-core-private.h"
  53 #include "sipe-dialog.h"
  54 #include "sipe-http.h"
  55 #include "sipe-im.h"
  56 #include "sipe-nls.h"
  57 #include "sipe-session.h"
  58 #include "sipe-subscriptions.h"
  59 #include "sipe-user.h"
  60 #include "sipe-utils.h"
  61 #include "sipe-xml.h"
  62
  63 /**
  64  * Invite counterparty to join conference.
  65  * @param focus_uri (%s)
  66  * @param subject (%s) of conference
  67  */
  68 #define SIPE_SEND_CONF_INVITE \
  69 "<Conferencing version=\"2.0\">"\
  70         "<focus-uri>%s</focus-uri>"\
  71         "<subject>%s</subject>"\
  72         "<im available=\"true\">"\
  73                 "<first-im/>"\
  74         "</im>"\
  75 "</Conferencing>"
  76
  77 static gboolean
  78 sipe_conf_check_for_lync_url(struct sipe_core_private *sipe_private,
  79                              gchar *uri);
  80
  81 static struct transaction *
  82 cccp_request(struct sipe_core_private *sipe_private, const gchar *method,
  83              const gchar *with, struct sip_dialog *dialog,
  84              TransCallback callback, const gchar *body, ...)
  85 {
  86         gchar *headers;
  87         gchar *request;
  88         gchar *request_body;
  89
  90         gchar *self = sip_uri_self(sipe_private);
  91
  92         va_list args;
  93
  94         struct transaction *trans;
  95
  96         headers = g_strdup_printf(
  97                 "Supported: ms-sender\r\n"
  98                 "Contact: %s\r\n"
  99                 "Content-Type: application/cccp+xml\r\n",
 100                 sipe_private->contact);
 101
 102         /* TODO: put request_id to queue to further compare with incoming one */
 103         request = g_strdup_printf(
 104                 "<?xml version=\"1.0\"?>"
 105                 "<request xmlns=\"urn:ietf:params:xml:ns:cccp\" "
 106                 "xmlns:mscp=\"http://schemas.microsoft.com/rtc/2005/08/cccpextensions\" "
 107                         "C3PVersion=\"1\" "
 108                         "to=\"%s\" "
 109                         "from=\"%s\" "
 110                         "requestId=\"%d\">"
 111                         "%s"
 112                 "</request>",
 113                 with,
 114                 self,
 115                 sipe_private->cccp_request_id++,
 116                 body);
 117         g_free(self);
 118
 119         va_start(args, body);
 120         request_body = g_strdup_vprintf(request, args);
 121         va_end(args);
 122
 123         g_free(request);
 124
 125         trans = sip_transport_request(sipe_private,
 126                                       method,
 127                                       with,
 128                                       with,
 129                                       headers,
 130                                       request_body,
 131                                       dialog,
 132                                       callback);
 133
 134         g_free(headers);
 135         g_free(request_body);
 136
 137         return trans;
 138 }
 139
 140 static gboolean
 141 process_conf_get_capabilities(SIPE_UNUSED_PARAMETER struct sipe_core_private *sipe_private,
 142                               struct sipmsg *msg,
 143                               SIPE_UNUSED_PARAMETER struct transaction *trans)
 144 {
 145         if (msg->response >= 400) {
 146                 SIPE_DEBUG_INFO_NOFORMAT("process_conf_get_capabilities: "
 147                                 "getConferencingCapabilities failed.");
 148                 return FALSE;
 149         }
 150         if (msg->response == 200) {
 151                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 152                 const sipe_xml *node;
 153                 gchar *default_region;
 154
 155                 if (!sipe_strequal("success", sipe_xml_attribute(xn_response, "code"))) {
 156                         return TRUE;
 157                 }
 158
 159                 node = sipe_xml_child(xn_response, "getConferencingCapabilities/mcu-types/mcuType");
 160                 for (;node; node = sipe_xml_twin(node)) {
 161                         sipe_private->conf_mcu_types =
 162                                         g_slist_append(sipe_private->conf_mcu_types,
 163                                                        sipe_xml_data(node));
 164                 }
 165
 166                 g_hash_table_remove_all(sipe_private->access_numbers);
 167                 node = sipe_xml_child(xn_response, "getConferencingCapabilities/pstn-bridging/access-numbers/region");
 168                 for (;node; node = sipe_xml_twin(node)) {
 169                         gchar *name = g_strdup(sipe_xml_attribute(node, "name"));
 170                         gchar *number = sipe_xml_data(sipe_xml_child(node, "access-number/number"));
 171                         if (name && number) {
 172                                 g_hash_table_insert(sipe_private->access_numbers, name, number);
 173                         }
 174                 }
 175
 176                 node = sipe_xml_child(xn_response, "getConferencingCapabilities/pstn-bridging/access-numbers/default-region");
 177                 default_region = sipe_xml_data(node);
 178                 if (default_region) {
 179                         sipe_private->default_access_number =
 180                                         g_hash_table_lookup(sipe_private->access_numbers, default_region);
 181                 }
 182                 g_free(default_region);
 183
 184                 sipe_xml_free(xn_response);
 185         }
 186
 187         return TRUE;
 188 }
 189
 190 void
 191 sipe_conf_get_capabilities(struct sipe_core_private *sipe_private)
 192 {
 193         cccp_request(sipe_private, "SERVICE",
 194                      sipe_private->focus_factory_uri,
 195                      NULL,
 196                      process_conf_get_capabilities,
 197                      "<getConferencingCapabilities />");
 198 }
 199
 200 gboolean
 201 sipe_conf_supports_mcu_type(struct sipe_core_private *sipe_private,
 202                             const gchar *type)
 203 {
 204         return g_slist_find_custom(sipe_private->conf_mcu_types, type,
 205                                    sipe_strcompare) != NULL;
 206 }
 207
 208 /**
 209  * Generates random GUID.
 210  * This method is borrowed from pidgin's msnutils.c
 211  */
 212 static char *
 213 rand_guid()
 214 {
 215         return g_strdup_printf("%4X%4X-%4X-%4X-%4X-%4X%4X%4X",
 216                         rand() % 0xAAFF + 0x1111,
 217                         rand() % 0xAAFF + 0x1111,
 218                         rand() % 0xAAFF + 0x1111,
 219                         rand() % 0xAAFF + 0x1111,
 220                         rand() % 0xAAFF + 0x1111,
 221                         rand() % 0xAAFF + 0x1111,
 222                         rand() % 0xAAFF + 0x1111,
 223                         rand() % 0xAAFF + 0x1111);
 224 }
 225
 226 /** Invite us to the focus callback */
 227 static gboolean
 228 process_invite_conf_focus_response(struct sipe_core_private *sipe_private,
 229                                    struct sipmsg *msg,
 230                                    SIPE_UNUSED_PARAMETER struct transaction *trans)
 231 {
 232         struct sip_session *session = NULL;
 233         char *focus_uri = parse_from(sipmsg_find_header(msg, "To"));
 234
 235         session = sipe_session_find_conference(sipe_private, focus_uri);
 236
 237         if (!session) {
 238                 SIPE_DEBUG_INFO("process_invite_conf_focus_response: unable to find conf session with focus=%s", focus_uri);
 239                 g_free(focus_uri);
 240                 return FALSE;
 241         }
 242
 243         if (!session->focus_dialog) {
 244                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_conf_focus_response: session's focus_dialog is NULL");
 245                 g_free(focus_uri);
 246                 return FALSE;
 247         }
 248
 249         sipe_dialog_parse(session->focus_dialog, msg, TRUE);
 250
 251         if (msg->response >= 200) {
 252                 /* send ACK to focus */
 253                 session->focus_dialog->cseq = 0;
 254                 sip_transport_ack(sipe_private, session->focus_dialog);
 255                 session->focus_dialog->outgoing_invite = NULL;
 256                 session->focus_dialog->is_established = TRUE;
 257         }
 258
 259         if (msg->response >= 400) {
 260                 gchar *reason = sipmsg_get_ms_diagnostics_reason(msg);
 261
 262                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_conf_focus_response: INVITE response is not 200. Failed to join focus.");
 263                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 264                                           _("Failed to join the conference"),
 265                                           reason ? reason : _("no reason given"));
 266                 g_free(reason);
 267
 268                 sipe_session_remove(sipe_private, session);
 269                 g_free(focus_uri);
 270                 return FALSE;
 271         } else if (msg->response == 200) {
 272                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 273                 const gchar *code = sipe_xml_attribute(xn_response, "code");
 274                 if (sipe_strequal(code, "success")) {
 275                         /* subscribe to focus */
 276                         sipe_subscribe_conference(sipe_private,
 277                                                   session->chat_session->id,
 278                                                   FALSE);
 279 #ifdef HAVE_VV
 280                         if (session->is_call)
 281                                 sipe_core_media_connect_conference(SIPE_CORE_PUBLIC,
 282                                                                    session->chat_session);
 283 #endif
 284                 }
 285                 sipe_xml_free(xn_response);
 286         }
 287
 288         g_free(focus_uri);
 289         return TRUE;
 290 }
 291
 292 static gchar *
 293 parse_ocs_focus_uri(const gchar *uri)
 294 {
 295         const gchar *confkey;
 296         size_t uri_len;
 297
 298         if (!uri)
 299                 return NULL;
 300
 301         // URI can have this prefix if it was typed in by the user
 302         if (g_str_has_prefix(uri, "meet:") || g_str_has_prefix(uri, "conf:")) {
 303                 uri += 5;
 304         }
 305
 306         uri_len = strlen(uri);
 307
 308         if (!uri || !g_str_has_prefix(uri, "sip:") ||
 309                 uri_len == 4 || g_strstr_len(uri, -1, "%")) {
 310                 return NULL;
 311         }
 312
 313         confkey = g_strstr_len(uri, -1, "?");
 314         if (confkey) {
 315                 /* TODO: Investigate how conf-key field should be used,
 316                  * ignoring for now */
 317                 uri_len = confkey - uri;
 318         }
 319
 320         return g_strndup(uri, uri_len);
 321 }
 322
 323 static gchar *
 324 extract_uri_from_html(const gchar *body,
 325                       const gchar *prefix,
 326                       guint prefix_skip_chars)
 327 {
 328         gchar *uri = NULL;
 329         const gchar *start = g_strstr_len(body, -1, prefix);
 330
 331         if (start) {
 332                 const gchar *end;
 333
 334                 start += prefix_skip_chars;
 335                 end = strchr(start, '"');
 336
 337                 if (end) {
 338                         gchar *html = g_strndup(start, end - start);
 339
 340                         /* decode HTML entities */
 341                         gchar *html_unescaped = sipe_backend_markup_strip_html(html);
 342                         g_free(html);
 343
 344                         if (!is_empty(html_unescaped)) {
 345                                 uri = sipe_utils_uri_unescape(html_unescaped);
 346                         }
 347
 348                         g_free(html_unescaped);
 349                 }
 350         }
 351
 352         return uri;
 353 }
 354
 355 static void sipe_conf_lync_url_cb(struct sipe_core_private *sipe_private,
 356                                   guint status,
 357                                   SIPE_UNUSED_PARAMETER GSList *headers,
 358                                   const gchar *body,
 359                                   gpointer callback_data)
 360 {
 361         gchar *uri = callback_data;
 362
 363         if (status != (guint) SIPE_HTTP_STATUS_ABORTED) {
 364                 gchar *focus_uri = NULL;
 365
 366                 if (body) {
 367                         /*
 368                          * Extract focus URI from HTML, e.g.
 369                          *
 370                          *  <a ... href="conf&#58;sip&#58;...ABCDEF&#37;3Frequired..." ... >
 371                          */
 372                         gchar *uri = extract_uri_from_html(body, "href=\"conf", 6);
 373                         focus_uri = parse_ocs_focus_uri(uri);
 374                         g_free(uri);
 375                 }
 376
 377                 if (focus_uri) {
 378                         SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: found focus URI"
 379                                         " '%s'", focus_uri);
 380
 381                         sipe_conf_create(sipe_private, NULL, focus_uri);
 382                         g_free(focus_uri);
 383                 } else {
 384                         /*
 385                          * If present, domainOwnerJoinLauncherUrl redirects to
 386                          * a page from where we still may extract the focus URI.
 387                          */
 388                         gchar *launcher_url;
 389                         static const gchar launcher_url_prefix[] =
 390                                         "var domainOwnerJoinLauncherUrl = \"";
 391
 392                         SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: no focus URI "
 393                                         "found from URL '%s'", uri);
 394
 395                         launcher_url = extract_uri_from_html(body,
 396                                                              launcher_url_prefix,
 397                                                              sizeof (launcher_url_prefix) - 1);
 398
 399                         if (launcher_url &&
 400                             sipe_conf_check_for_lync_url(sipe_private, launcher_url)) {
 401                                 SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: retrying with URL '%s'",
 402                                                 launcher_url);
 403                                 /* Ownership taken by sipe_conf_check_for_lync_url() */
 404                                 launcher_url = NULL;
 405                         } else {
 406                                 gchar *error;
 407
 408                                 error = g_strdup_printf(_("Can't find a conference URI on this page:\n\n%s"),
 409                                                         uri);
 410
 411                                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 412                                                           _("Failed to join the conference"),
 413                                                           error);
 414                                 g_free(error);
 415                         }
 416
 417                         g_free(launcher_url);
 418                 }
 419         }
 420
 421         g_free(uri);
 422 }
 423
 424 static gboolean sipe_conf_check_for_lync_url(struct sipe_core_private *sipe_private,
 425                                              gchar *uri)
 426 {
 427         if (!(g_str_has_prefix(uri, "https://") ||
 428               g_str_has_prefix(uri, "http://")))
 429                 return(FALSE);
 430
 431         /* URL points to a HTML page with the conference focus URI */
 432         return(sipe_http_request_get(sipe_private,
 433                                      uri,
 434                                      NULL,
 435                                      sipe_conf_lync_url_cb,
 436                                      uri)
 437                != NULL);
 438 }
 439
 440 static void sipe_conf_uri_error(struct sipe_core_private *sipe_private,
 441                                 const gchar *uri)
 442 {
 443         gchar *error = g_strdup_printf(_("\"%s\" is not a valid conference URI"),
 444                                        uri ? uri : "");
 445         sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 446                                   _("Failed to join the conference"),
 447                                   error);
 448         g_free(error);
 449 }
 450
 451 void sipe_core_conf_create(struct sipe_core_public *sipe_public,
 452                            const gchar *uri,
 453                            const gchar *organizer,
 454                            const gchar *meeting_id)
 455 {
 456         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 457
 458         /* SIP URI or HTTP URL */
 459         if (uri) {
 460                 gchar *uri_ue = sipe_utils_uri_unescape(uri);
 461
 462                 SIPE_DEBUG_INFO("sipe_core_conf_create: URI '%s' unescaped '%s'",
 463                                 uri,
 464                                 uri_ue ? uri_ue : "<UNDEFINED>");
 465
 466                 /* takes ownership of "uri_ue" if successful */
 467                 if (!sipe_conf_check_for_lync_url(sipe_private, uri_ue)) {
 468                         gchar *focus_uri = parse_ocs_focus_uri(uri_ue);
 469
 470                         if (focus_uri) {
 471                                 sipe_conf_create(sipe_private, NULL, focus_uri);
 472                                 g_free(focus_uri);
 473                         } else
 474                                 sipe_conf_uri_error(sipe_private, uri);
 475
 476                         g_free(uri_ue);
 477                 }
 478
 479         /* Organizer email and meeting ID */
 480         } else if (organizer && meeting_id) {
 481                 gchar *tmp = g_strdup_printf("sip:%s;gruu;opaque=app:conf:focus:id:%s",
 482                                              organizer, meeting_id);
 483                 gchar *focus_uri = parse_ocs_focus_uri(tmp);
 484
 485                 SIPE_DEBUG_INFO("sipe_core_conf_create: organizer '%s' meeting ID '%s'",
 486                                 organizer,
 487                                 meeting_id);
 488
 489                 if (focus_uri) {
 490                         sipe_conf_create(sipe_private, NULL, focus_uri);
 491                         g_free(focus_uri);
 492                 } else
 493                         sipe_conf_uri_error(sipe_private, tmp);
 494                 g_free(tmp);
 495
 496         } else {
 497                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 498                                           _("Failed to join the conference"),
 499                                           _("Incomplete conference information provided"));
 500         }
 501 }
 502
 503 /** Create new session with Focus URI */
 504 struct sip_session *
 505 sipe_conf_create(struct sipe_core_private *sipe_private,
 506                  struct sipe_chat_session *chat_session,
 507                  const gchar *focus_uri)
 508 {
 509         /* addUser request to the focus.
 510          *
 511          * focus_URI, from, endpoint_GUID
 512          */
 513         static const gchar CCCP_ADD_USER[] =
 514                 "<addUser>"
 515                         "<conferenceKeys confEntity=\"%s\"/>"
 516                         "<ci:user xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" entity=\"%s\">"
 517                                 "<ci:roles>"
 518                                         "<ci:entry>attendee</ci:entry>"
 519                                 "</ci:roles>"
 520                                 "<ci:endpoint entity=\"{%s}\" "
 521                                               "xmlns:msci=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\"/>"
 522                         "</ci:user>"
 523                 "</addUser>";
 524
 525         gchar *self;
 526         struct sip_session *session = sipe_session_add_chat(sipe_private,
 527                                                             chat_session,
 528                                                             FALSE,
 529                                                             focus_uri);
 530
 531         session->focus_dialog = g_new0(struct sip_dialog, 1);
 532         session->focus_dialog->callid = gencallid();
 533         session->focus_dialog->with = g_strdup(session->chat_session->id);
 534         session->focus_dialog->endpoint_GUID = rand_guid();
 535         session->focus_dialog->ourtag = gentag();
 536
 537         self = sip_uri_self(sipe_private);
 538         session->focus_dialog->outgoing_invite =
 539                 cccp_request(sipe_private, "INVITE",
 540                              session->focus_dialog->with, session->focus_dialog,
 541                              process_invite_conf_focus_response,
 542                              CCCP_ADD_USER,
 543                              session->focus_dialog->with, self,
 544                              session->focus_dialog->endpoint_GUID);
 545
 546         /* Rejoin existing session? */
 547         if (chat_session) {
 548                 SIPE_DEBUG_INFO("sipe_conf_create: rejoin '%s' (%s)",
 549                                 chat_session->title,
 550                                 chat_session->id);
 551                 sipe_backend_chat_rejoin(SIPE_CORE_PUBLIC,
 552                                          chat_session->backend,
 553                                          self,
 554                                          chat_session->title);
 555         }
 556         g_free(self);
 557
 558         return(session);
 559 }
 560
 561 /** Modify User Role */
 562 void
 563 sipe_conf_modify_user_role(struct sipe_core_private *sipe_private,
 564                            struct sip_session *session,
 565                            const gchar* who)
 566 {
 567         /* modifyUserRoles request to the focus. Makes user a leader.
 568          *
 569          * focus_uri (%s)
 570          * who (%s)
 571          */
 572         static const gchar CCCP_MODIFY_USER_ROLES[] =
 573                 "<modifyUserRoles>"
 574                         "<userKeys confEntity=\"%s\" userEntity=\"%s\"/>"
 575                         "<user-roles xmlns=\"urn:ietf:params:xml:ns:conference-info\">"
 576                                 "<entry>presenter</entry>"
 577                         "</user-roles>"
 578                 "</modifyUserRoles>";
 579
 580         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 581                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_modify_user_role: no dialog with focus, exiting.");
 582                 return;
 583         }
 584
 585         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 586                      session->focus_dialog, NULL,
 587                      CCCP_MODIFY_USER_ROLES,
 588                      session->focus_dialog->with, who);
 589 }
 590
 591 /**
 592  * Check conference lock status
 593  */
 594 sipe_chat_lock_status sipe_core_chat_lock_status(struct sipe_core_public *sipe_public,
 595                                                  struct sipe_chat_session *chat_session)
 596 {
 597         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 598         sipe_chat_lock_status status = SIPE_CHAT_LOCK_STATUS_NOT_ALLOWED;
 599
 600         if (chat_session &&
 601             (chat_session->type == SIPE_CHAT_TYPE_CONFERENCE)) {
 602                 struct sip_session *session = sipe_session_find_chat(sipe_private,
 603                                                                      chat_session);
 604                 if (session) {
 605                         gchar *self = sip_uri_self(sipe_private);
 606
 607                         /* Only operators are allowed to change the lock status */
 608                         if (sipe_backend_chat_is_operator(chat_session->backend, self)) {
 609                                 status = session->locked ?
 610                                         SIPE_CHAT_LOCK_STATUS_LOCKED :
 611                                         SIPE_CHAT_LOCK_STATUS_UNLOCKED;
 612                         }
 613
 614                         g_free(self);
 615                 }
 616         }
 617
 618         return(status);
 619 }
 620
 621 /**
 622  * Modify Conference Lock
 623  * Sends request to Focus.
 624  * INFO method is a carrier of application/cccp+xml
 625  */
 626 void
 627 sipe_core_chat_modify_lock(struct sipe_core_public *sipe_public,
 628                            struct sipe_chat_session *chat_session,
 629                            const gboolean locked)
 630 {
 631         /* modifyConferenceLock request to the focus. Locks/unlocks conference.
 632          *
 633          * focus_uri (%s)
 634          * locked (%s) "true" or "false" values applicable
 635          */
 636         static const gchar CCCP_MODIFY_CONFERENCE_LOCK[] =
 637                 "<modifyConferenceLock>"
 638                         "<conferenceKeys confEntity=\"%s\"/>"
 639                         "<locked>%s</locked>"
 640                 "</modifyConferenceLock>";
 641
 642         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 643
 644         struct sip_session *session = sipe_session_find_chat(sipe_private,
 645                                                              chat_session);
 646
 647         if (!session) return;
 648         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 649                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_modify_conference_lock: no dialog with focus, exiting.");
 650                 return;
 651         }
 652
 653         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 654                      session->focus_dialog, NULL,
 655                      CCCP_MODIFY_CONFERENCE_LOCK,
 656                      session->focus_dialog->with,
 657                      locked ? "true" : "false");
 658 }
 659
 660 /** Modify Delete User */
 661 void
 662 sipe_conf_delete_user(struct sipe_core_private *sipe_private,
 663                       struct sip_session *session,
 664                       const gchar* who)
 665 {
 666         /* deleteUser request to the focus. Removes a user from the conference.
 667          *
 668          * focus_uri (%s)
 669          * who (%s)
 670          */
 671         static const gchar CCCP_DELETE_USER[] =
 672                 "<deleteUser>"
 673                         "<userKeys confEntity=\"%s\" userEntity=\"%s\"/>"
 674                 "</deleteUser>";
 675
 676         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 677                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_delete_user: no dialog with focus, exiting.");
 678                 return;
 679         }
 680
 681         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 682                      session->focus_dialog, NULL,
 683                      CCCP_DELETE_USER,
 684                      session->focus_dialog->with, who);
 685 }
 686
 687 void
 688 sipe_conf_announce_audio_mute_state(struct sipe_core_private *sipe_private,
 689                                     struct sip_session *session,
 690                                     gboolean is_muted)
 691 {
 692         // See [MS-CONFAV] 3.2.5.4 and 4.3
 693         static const gchar CCCP_MODIFY_ENDPOINT_MEDIA[] =
 694                 "<modifyEndpointMedia mscp:mcuUri=\"%s\""
 695                 " xmlns:mscp=\"http://schemas.microsoft.com/rtc/2005/08/cccpextensions\">"
 696                         "<mediaKeys confEntity=\"%s\" userEntity=\"%s\""
 697                         " endpointEntity=\"%s\" mediaId=\"%d\"/>"
 698                         "<ci:media"
 699                         " xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" id=\"%d\">"
 700                                 "<ci:type>audio</ci:type>"
 701                                 "<ci:status>%s</ci:status>"
 702                                 "<media-ingress-filter"
 703                                 " xmlns=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\">"
 704                                         "%s"
 705                                 "</media-ingress-filter>"
 706                         "</ci:media>"
 707                 "</modifyEndpointMedia>";
 708
 709         gchar *mcu_uri = sipe_conf_build_uri(session->focus_dialog->with,
 710                                              "audio-video");
 711         gchar *self = sip_uri_self(sipe_private);
 712
 713         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 714                      session->focus_dialog, NULL,
 715                      CCCP_MODIFY_ENDPOINT_MEDIA,
 716                      mcu_uri, session->focus_dialog->with, self,
 717                      session->audio_video_entity,
 718                      session->audio_media_id, session->audio_media_id,
 719                      is_muted ? "recvonly" : "sendrecv",
 720                      is_muted ? "block" : "unblock");
 721
 722         g_free(mcu_uri);
 723         g_free(self);
 724 }
 725
 726 /** Invite counterparty to join conference callback */
 727 static gboolean
 728 process_invite_conf_response(struct sipe_core_private *sipe_private,
 729                              struct sipmsg *msg,
 730                              SIPE_UNUSED_PARAMETER struct transaction *trans)
 731 {
 732         struct sip_dialog *dialog = g_new0(struct sip_dialog, 1);
 733
 734         dialog->callid = g_strdup(sipmsg_find_header(msg, "Call-ID"));
 735         dialog->cseq = sipmsg_parse_cseq(msg);
 736         dialog->with = parse_from(sipmsg_find_header(msg, "To"));
 737         sipe_dialog_parse(dialog, msg, TRUE);
 738
 739         if (msg->response >= 200) {
 740                 /* send ACK to counterparty */
 741                 dialog->cseq--;
 742                 sip_transport_ack(sipe_private, dialog);
 743                 dialog->outgoing_invite = NULL;
 744                 dialog->is_established = TRUE;
 745         }
 746
 747         if (msg->response >= 400) {
 748                 SIPE_DEBUG_INFO("process_invite_conf_response: INVITE response is not 200. Failed to invite %s.", dialog->with);
 749                 /* @TODO notify user of failure to invite counterparty */
 750                 sipe_dialog_free(dialog);
 751                 return FALSE;
 752         }
 753
 754         if (msg->response >= 200) {
 755                 struct sip_session *session = sipe_session_find_im(sipe_private, dialog->with);
 756                 struct sip_dialog *im_dialog = sipe_dialog_find(session, dialog->with);
 757
 758                 /* close IM session to counterparty */
 759                 if (im_dialog) {
 760                         sip_transport_bye(sipe_private, im_dialog);
 761                         sipe_dialog_remove(session, dialog->with);
 762                 }
 763         }
 764
 765         sipe_dialog_free(dialog);
 766         return TRUE;
 767 }
 768
 769 /**
 770  * Invites counterparty to join conference.
 771  */
 772 void
 773 sipe_invite_conf(struct sipe_core_private *sipe_private,
 774                  struct sip_session *session,
 775                  const gchar* who)
 776 {
 777         gchar *hdr;
 778         gchar *contact;
 779         gchar *body;
 780         struct sip_dialog *dialog = NULL;
 781
 782         /* It will be short lived special dialog.
 783          * Will not be stored in session.
 784          */
 785         dialog = g_new0(struct sip_dialog, 1);
 786         dialog->callid = gencallid();
 787         dialog->with = g_strdup(who);
 788         dialog->ourtag = gentag();
 789
 790         contact = get_contact(sipe_private);
 791         hdr = g_strdup_printf(
 792                 "Supported: ms-sender\r\n"
 793                 "Contact: %s\r\n"
 794                 "Content-Type: application/ms-conf-invite+xml\r\n",
 795                 contact);
 796         g_free(contact);
 797
 798         body = g_strdup_printf(
 799                 SIPE_SEND_CONF_INVITE,
 800                 session->chat_session->id,
 801                 session->subject ? session->subject : ""
 802                 );
 803
 804         sip_transport_invite(sipe_private,
 805                              hdr,
 806                              body,
 807                              dialog,
 808                              process_invite_conf_response);
 809
 810         sipe_dialog_free(dialog);
 811         g_free(body);
 812         g_free(hdr);
 813 }
 814
 815 /** Create conference callback */
 816 static gboolean
 817 process_conf_add_response(struct sipe_core_private *sipe_private,
 818                           struct sipmsg *msg,
 819                           struct transaction *trans)
 820 {
 821         if (msg->response >= 400) {
 822                 SIPE_DEBUG_INFO_NOFORMAT("process_conf_add_response: SERVICE response is not 200. Failed to create conference.");
 823                 /* @TODO notify user of failure to create conference */
 824                 return FALSE;
 825         }
 826         if (msg->response == 200) {
 827                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 828                 if (sipe_strequal("success", sipe_xml_attribute(xn_response, "code")))
 829                 {
 830                         gchar *who = trans->payload->data;
 831                         const sipe_xml *xn_conference_info = sipe_xml_child(xn_response, "addConference/conference-info");
 832                         struct sip_session *session = sipe_conf_create(sipe_private,
 833                                                                        NULL,
 834                                                                        sipe_xml_attribute(xn_conference_info,
 835                                                                                           "entity"));
 836
 837                         SIPE_DEBUG_INFO("process_conf_add_response: session->focus_uri=%s",
 838                                         session->chat_session->id);
 839
 840                         session->pending_invite_queue = sipe_utils_slist_insert_unique_sorted(session->pending_invite_queue,
 841                                                                                               g_strdup(who),
 842                                                                                               (GCompareFunc)strcmp,
 843                                                                                               g_free);
 844                 }
 845                 sipe_xml_free(xn_response);
 846         }
 847
 848         return TRUE;
 849 }
 850
 851 /**
 852  * Creates conference.
 853  */
 854 void
 855 sipe_conf_add(struct sipe_core_private *sipe_private,
 856               const gchar* who)
 857 {
 858         gchar *conference_id;
 859         struct transaction *trans;
 860         time_t expiry = time(NULL) + 7*60*60; /* 7 hours */
 861         char *expiry_time;
 862
 863         /* addConference request to the focus factory.
 864          *
 865          * conference_id        (%s) Ex.: 8386E6AEAAA41E4AA6627BA76D43B6D1
 866          * expiry_time          (%s) Ex.: 2009-07-13T17:57:09Z
 867          * conference_view      (%s) Ex.: <msci:entity-view entity="chat"/>
 868          */
 869         static const gchar CCCP_ADD_CONFERENCE[] =
 870                 "<addConference>"
 871                         "<ci:conference-info xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" "
 872                                              "entity=\"\" "
 873                                              "xmlns:msci=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\">"
 874                                 "<ci:conference-description>"
 875                                         "<ci:subject/>"
 876                                         "<msci:conference-id>%s</msci:conference-id>"
 877                                         "<msci:expiry-time>%s</msci:expiry-time>"
 878                                         "<msci:admission-policy>openAuthenticated</msci:admission-policy>"
 879                                 "</ci:conference-description>"
 880                                 "<msci:conference-view>%s</msci:conference-view>"
 881                         "</ci:conference-info>"
 882                 "</addConference>";
 883
 884         static const gchar *DESIRED_MCU_TYPES[] = {
 885                 "chat",
 886 #ifdef HAVE_VV
 887                 "audio-video",
 888 #endif
 889 #ifdef HAVE_APPSHARE
 890                 "applicationsharing",
 891 #endif
 892                 NULL
 893         };
 894
 895         GString *conference_view = g_string_new("");
 896         const gchar **type;
 897
 898         for (type = DESIRED_MCU_TYPES; *type; ++type ) {
 899                 if (sipe_conf_supports_mcu_type(sipe_private, *type)) {
 900                         g_string_append(conference_view, "<msci:entity-view entity=\"");
 901                         g_string_append(conference_view, *type);
 902                         g_string_append(conference_view, "\"/>");
 903                 }
 904         }
 905
 906         expiry_time = sipe_utils_time_to_str(expiry);
 907         conference_id = genconfid();
 908         trans = cccp_request(sipe_private, "SERVICE", sipe_private->focus_factory_uri,
 909                              NULL, process_conf_add_response,
 910                              CCCP_ADD_CONFERENCE,
 911                              conference_id, expiry_time, conference_view->str);
 912         g_free(conference_id);
 913         g_free(expiry_time);
 914         g_string_free(conference_view, TRUE);
 915
 916         if (trans) {
 917                 struct transaction_payload *payload = g_new0(struct transaction_payload, 1);
 918
 919                 payload->destroy = g_free;
 920                 payload->data = g_strdup(who);
 921                 trans->payload = payload;
 922         }
 923 }
 924
 925 static void
 926 accept_incoming_invite_conf(struct sipe_core_private *sipe_private,
 927                             gchar *focus_uri,
 928                             gboolean audio,
 929                             struct sipmsg *msg)
 930 {
 931         struct sip_session *session;
 932         gchar *newTag = gentag();
 933         const gchar *oldHeader = sipmsg_find_header(msg, "To");
 934         gchar *newHeader;
 935
 936         newHeader = g_strdup_printf("%s;tag=%s", oldHeader, newTag);
 937         g_free(newTag);
 938         sipmsg_remove_header_now(msg, "To");
 939         sipmsg_add_header_now(msg, "To", newHeader);
 940         g_free(newHeader);
 941
 942         /* acknowledge invite */
 943         sip_transport_response(sipe_private, msg, 200, "OK", NULL);
 944
 945         /* add self to conf */
 946         session = sipe_conf_create(sipe_private, NULL, focus_uri);
 947         session->is_call = audio;
 948 }
 949
 950 struct conf_accept_ctx {
 951         gchar *focus_uri;
 952         struct sipmsg *msg;
 953         struct sipe_user_ask_ctx *ask_ctx;
 954
 955         SipeUserAskCb accept_cb;
 956         SipeUserAskCb decline_cb;
 957
 958         gpointer user_data;
 959 };
 960
 961 static void
 962 conf_accept_ctx_free(struct conf_accept_ctx *ctx)
 963 {
 964         g_return_if_fail(ctx != NULL);
 965
 966         sipmsg_free(ctx->msg);
 967         g_free(ctx->focus_uri);
 968         g_free(ctx);
 969 }
 970
 971 static void
 972 conf_accept_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
 973 {
 974         accept_incoming_invite_conf(sipe_private, ctx->focus_uri, TRUE, ctx->msg);
 975 }
 976
 977 static void
 978 conf_decline_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
 979 {
 980         sip_transport_response(sipe_private,
 981                                ctx->msg,
 982                                603, "Decline", NULL);
 983 }
 984
 985 void
 986 sipe_conf_cancel_unaccepted(struct sipe_core_private *sipe_private,
 987                             struct sipmsg *msg)
 988 {
 989         const gchar *callid1 = msg ? sipmsg_find_header(msg, "Call-ID") : NULL;
 990         GSList *it = sipe_private->sessions_to_accept;
 991         while (it) {
 992                 struct conf_accept_ctx *ctx = it->data;
 993                 const gchar *callid2 = NULL;
 994
 995                 if (msg && ctx->msg)
 996                         callid2 = sipmsg_find_header(ctx->msg, "Call-ID");
 997
 998                 if (sipe_strequal(callid1, callid2)) {
 999                         GSList *tmp;
1000
1001                         if (ctx->msg)
1002                                 sip_transport_response(sipe_private, ctx->msg,
1003                                                        487, "Request Terminated", NULL);
1004
1005                         if (msg)
1006                                 sip_transport_response(sipe_private, msg, 200, "OK", NULL);
1007
1008                         sipe_user_close_ask(ctx->ask_ctx);
1009                         conf_accept_ctx_free(ctx);
1010
1011                         tmp = it;
1012                         it = it->next;
1013
1014                         sipe_private->sessions_to_accept =
1015                                 g_slist_delete_link(sipe_private->sessions_to_accept, tmp);
1016
1017                         if (callid1)
1018                                 break;
1019                 } else
1020                         it = it->next;
1021         }
1022 }
1023
1024 static void
1025 accept_invitation_cb(struct sipe_core_private *sipe_private, gpointer data)
1026 {
1027         struct conf_accept_ctx *ctx = data;
1028
1029         sipe_private->sessions_to_accept =
1030                         g_slist_remove(sipe_private->sessions_to_accept, ctx);
1031
1032         if (ctx->accept_cb) {
1033                 ctx->accept_cb(sipe_private, ctx);
1034         }
1035
1036         conf_accept_ctx_free(ctx);
1037 }
1038
1039 static void
1040 decline_invitation_cb(struct sipe_core_private *sipe_private, gpointer data)
1041 {
1042         struct conf_accept_ctx *ctx = data;
1043
1044         sipe_private->sessions_to_accept =
1045                         g_slist_remove(sipe_private->sessions_to_accept, ctx);
1046
1047         if (ctx->decline_cb) {
1048                 ctx->decline_cb(sipe_private, ctx);
1049         }
1050
1051         conf_accept_ctx_free(ctx);
1052 }
1053
1054 static void
1055 ask_accept_invitation(struct sipe_core_private *sipe_private,
1056                       const gchar *focus_uri,
1057                       const gchar *question,
1058                       struct sipmsg *msg,
1059                       SipeUserAskCb accept_cb,
1060                       SipeUserAskCb decline_cb,
1061                       gpointer user_data)
1062 {
1063         gchar **parts;
1064         gchar *alias;
1065         gchar *question_str;
1066         struct conf_accept_ctx *ctx;
1067
1068         parts = g_strsplit(focus_uri, ";", 2);
1069         alias = sipe_buddy_get_alias(sipe_private, parts[0]);
1070
1071         question_str = g_strdup_printf("%s %s", alias ? alias : parts[0], question);
1072
1073         g_free(alias);
1074         g_strfreev(parts);
1075
1076         ctx = g_new0(struct conf_accept_ctx, 1);
1077         sipe_private->sessions_to_accept =
1078                         g_slist_append(sipe_private->sessions_to_accept, ctx);
1079
1080         ctx->focus_uri = g_strdup(focus_uri);
1081         ctx->msg = msg ? sipmsg_copy(msg) : NULL;
1082         ctx->accept_cb = accept_cb;
1083         ctx->decline_cb = decline_cb;
1084         ctx->user_data = user_data;
1085         ctx->ask_ctx = sipe_user_ask(sipe_private, question_str,
1086                                      _("Accept"), accept_invitation_cb,
1087                                      _("Decline"), decline_invitation_cb,
1088                                      ctx);
1089
1090         g_free(question_str);
1091 }
1092
1093 static void
1094 ask_accept_voice_conference(struct sipe_core_private *sipe_private,
1095                             const gchar *focus_uri,
1096                             struct sipmsg *msg,
1097                             SipeUserAskCb accept_cb,
1098                             SipeUserAskCb decline_cb)
1099 {
1100         gchar *question;
1101         const gchar *novv_note;
1102
1103 #ifdef HAVE_VV
1104         novv_note = "";
1105 #else
1106         novv_note = _("\n\nAs this client was not compiled with voice call "
1107                       "support, if you accept, you will be able to contact "
1108                       "the other participants only via IM session.");
1109 #endif
1110
1111         question = g_strdup_printf(_("wants to invite you "
1112                                      "to a conference call%s"), novv_note);
1113
1114         ask_accept_invitation(sipe_private, focus_uri, question, msg,
1115                               accept_cb, decline_cb, NULL);
1116
1117         g_free(question);
1118 }
1119
1120 void
1121 process_incoming_invite_conf(struct sipe_core_private *sipe_private,
1122                              struct sipmsg *msg)
1123 {
1124         sipe_xml *xn_conferencing = sipe_xml_parse(msg->body, msg->bodylen);
1125         const sipe_xml *xn_focus_uri = sipe_xml_child(xn_conferencing, "focus-uri");
1126         const sipe_xml *xn_audio = sipe_xml_child(xn_conferencing, "audio");
1127         gchar *focus_uri = sipe_xml_data(xn_focus_uri);
1128         gboolean audio = sipe_strequal(sipe_xml_attribute(xn_audio, "available"), "true");
1129
1130         sipe_xml_free(xn_conferencing);
1131
1132         SIPE_DEBUG_INFO("We have received invitation to Conference. Focus URI=%s", focus_uri);
1133
1134         if (audio) {
1135                 sip_transport_response(sipe_private, msg, 180, "Ringing", NULL);
1136                 ask_accept_voice_conference(sipe_private, focus_uri, msg,
1137                                             (SipeUserAskCb) conf_accept_cb,
1138                                             (SipeUserAskCb) conf_decline_cb);
1139
1140         } else {
1141                 accept_incoming_invite_conf(sipe_private, focus_uri, FALSE, msg);
1142         }
1143
1144         g_free(focus_uri);
1145 }
1146
1147 #ifdef HAVE_VV
1148
1149 static void
1150 process_conference_av_endpoint(const sipe_xml *endpoint,
1151                                const gchar *user_uri,
1152                                const gchar *self_uri,
1153                                struct sip_session *session)
1154 {
1155         const sipe_xml *media;
1156         const gchar *new_entity;
1157
1158         if (!sipe_strequal(user_uri, self_uri)) {
1159                 /* We are interested only in our own endpoint data. */
1160                 return;
1161         }
1162
1163         new_entity = sipe_xml_attribute(endpoint, "entity");
1164         if (!sipe_strequal(session->audio_video_entity, new_entity)) {
1165                 g_free(session->audio_video_entity);
1166                 session->audio_video_entity = g_strdup(new_entity);
1167         }
1168
1169         session->audio_media_id = 0;
1170
1171         media = sipe_xml_child(endpoint, "media");
1172         for (; media; media = sipe_xml_twin(media)) {
1173                 gchar *type = sipe_xml_data(sipe_xml_child(media, "type"));
1174
1175                 if (sipe_strequal(type, "audio")) {
1176                         session->audio_media_id =
1177                                         sipe_xml_int_attribute(media, "id", 0);
1178                 }
1179
1180                 g_free(type);
1181
1182                 if (session->audio_media_id != 0) {
1183                         break;
1184                 }
1185         }
1186 }
1187
1188 static void
1189 call_accept_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
1190 {
1191         struct sip_session *session;
1192         session = sipe_session_find_conference(sipe_private, ctx->focus_uri);
1193
1194         if (session) {
1195                 sipe_core_media_connect_conference(SIPE_CORE_PUBLIC,
1196                                                    session->chat_session);
1197         }
1198 }
1199
1200 #ifdef HAVE_APPSHARE
1201 gboolean
1202 sipe_core_conf_is_viewing_appshare(struct sipe_core_public *sipe_public,
1203                                    struct sipe_chat_session *chat_session)
1204 {
1205         if (chat_session) {
1206                 gchar *mcu_uri;
1207                 GList *calls;
1208
1209                 mcu_uri = sipe_conf_build_uri(chat_session->id, "applicationsharing");
1210                 calls = g_hash_table_get_values(SIPE_CORE_PRIVATE->media_calls);
1211
1212                 for (; calls; calls = g_list_delete_link(calls, calls)) {
1213                         struct sipe_media_call *call = calls->data;
1214                         if (sipe_strequal(call->with, mcu_uri)) {
1215                                 break;
1216                         }
1217                 }
1218
1219                 g_free(mcu_uri);
1220
1221                 if (calls != NULL) {
1222                         g_list_free(calls);
1223                         return TRUE;
1224                 }
1225         }
1226
1227         return FALSE;
1228 }
1229
1230 static gboolean
1231 process_conference_appshare_endpoint(const sipe_xml *endpoint)
1232 {
1233         gboolean presentation_added = FALSE;
1234         const sipe_xml *media;
1235
1236         for (media = sipe_xml_child(endpoint, "media");
1237              media && !presentation_added;
1238              media = sipe_xml_twin(media)) {
1239                 gchar *type;
1240                 gchar *media_state;
1241                 gchar *status;
1242
1243                 type = sipe_xml_data(sipe_xml_child(media, "type"));
1244                 media_state = sipe_xml_data(sipe_xml_child(media, "media-state"));
1245                 status = sipe_xml_data(sipe_xml_child(media, "status"));
1246
1247                 if (sipe_strequal(type, "applicationsharing") &&
1248                     sipe_strequal(media_state, "connected") &&
1249                     sipe_strequal(status, "sendonly")) {
1250                         presentation_added = TRUE;
1251                 }
1252
1253                 g_free(type);
1254                 g_free(media_state);
1255                 g_free(status);
1256         }
1257
1258         return(presentation_added);
1259 }
1260 #endif // HAVE_APPSHARE
1261 #endif // HAVE_VV
1262
1263 void
1264 sipe_process_conference(struct sipe_core_private *sipe_private,
1265                         struct sipmsg *msg)
1266 {
1267         sipe_xml *xn_conference_info;
1268         const sipe_xml *node;
1269         const sipe_xml *xn_subject;
1270         const gchar *focus_uri;
1271         struct sip_session *session;
1272         gboolean just_joined = FALSE;
1273 #ifdef HAVE_VV
1274         gboolean audio_was_added = FALSE;
1275 #ifdef HAVE_APPSHARE
1276         gboolean presentation_was_added = FALSE;
1277 #endif
1278 #endif // HAVE_VV
1279
1280         if (msg->response != 0 && msg->response != 200) return;
1281
1282         if (msg->bodylen == 0 || msg->body == NULL || !sipe_strequal(sipmsg_find_header(msg, "Event"), "conference")) return;
1283
1284         xn_conference_info = sipe_xml_parse(msg->body, msg->bodylen);
1285         if (!xn_conference_info) return;
1286
1287         focus_uri = sipe_xml_attribute(xn_conference_info, "entity");
1288         session = sipe_session_find_conference(sipe_private, focus_uri);
1289
1290         if (!session) {
1291                 SIPE_DEBUG_INFO("sipe_process_conference: unable to find conf session with focus=%s", focus_uri);
1292                 return;
1293         }
1294
1295         if (!session->chat_session->backend) {
1296                 gchar *self = sip_uri_self(sipe_private);
1297
1298                 /* create chat */
1299                 session->chat_session->backend = sipe_backend_chat_create(SIPE_CORE_PUBLIC,
1300                                                                           session->chat_session,
1301                                                                           session->chat_session->title,
1302                                                                           self);
1303                 just_joined = TRUE;
1304                 /* @TODO ask for full state (re-subscribe) if it was a partial one -
1305                  * this is to obtain full list of conference participants.
1306                  */
1307                  g_free(self);
1308         }
1309
1310         /* subject */
1311         if ((xn_subject = sipe_xml_child(xn_conference_info, "conference-description/subject"))) {
1312                 g_free(session->subject);
1313                 session->subject = sipe_xml_data(xn_subject);
1314                 sipe_backend_chat_topic(session->chat_session->backend, session->subject);
1315                 SIPE_DEBUG_INFO("sipe_process_conference: subject=%s", session->subject ? session->subject : "");
1316         }
1317
1318         /* IM MCU URI */
1319         if (!session->im_mcu_uri) {
1320                 for (node = sipe_xml_child(xn_conference_info, "conference-description/conf-uris/entry");
1321                      node;
1322                      node = sipe_xml_twin(node))
1323                 {
1324                         gchar *purpose = sipe_xml_data(sipe_xml_child(node, "purpose"));
1325
1326                         if (sipe_strequal("chat", purpose)) {
1327                                 g_free(purpose);
1328                                 session->im_mcu_uri = sipe_xml_data(sipe_xml_child(node, "uri"));
1329                                 SIPE_DEBUG_INFO("sipe_process_conference: im_mcu_uri=%s", session->im_mcu_uri);
1330                                 break;
1331                         }
1332                         g_free(purpose);
1333                 }
1334         }
1335
1336         /* organizer */
1337         if (!session->chat_session->organizer) {
1338                 node = sipe_xml_child(xn_conference_info, "conference-description/organizer/display-name");
1339                 if (node) {
1340                         session->chat_session->organizer = sipe_xml_data(node);
1341                 }
1342         }
1343
1344         /* join URL */
1345         if (!session->chat_session->join_url) {
1346                 node = sipe_xml_child(xn_conference_info, "conference-description/join-url");
1347                 if (node) {
1348                         session->chat_session->join_url = sipe_xml_data(node);
1349                 }
1350         }
1351
1352         /* dial-in conference id */
1353         if (!session->chat_session->dial_in_conf_id) {
1354                 node = sipe_xml_child(xn_conference_info, "conference-description/pstn-access/id");
1355                 if (node) {
1356                         session->chat_session->dial_in_conf_id = sipe_xml_data(node);
1357                 }
1358         }
1359
1360         /* users */
1361         for (node = sipe_xml_child(xn_conference_info, "users/user"); node; node = sipe_xml_twin(node)) {
1362                 const gchar *user_uri = sipe_xml_attribute(node, "entity");
1363                 const gchar *state = sipe_xml_attribute(node, "state");
1364                 gchar *role = sipe_xml_data(sipe_xml_child(node, "roles/entry"));
1365                 gboolean is_operator = sipe_strequal(role, "presenter");
1366                 gboolean is_in_im_mcu = FALSE;
1367                 gchar *self = sip_uri_self(sipe_private);
1368
1369                 if (sipe_strequal("deleted", state)) {
1370                         if (sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1371                                 sipe_backend_chat_remove(session->chat_session->backend,
1372                                                          user_uri);
1373                         }
1374                 } else {
1375                         /* endpoints */
1376                         const sipe_xml *endpoint;
1377                         for (endpoint = sipe_xml_child(node, "endpoint"); endpoint; endpoint = sipe_xml_twin(endpoint)) {
1378                                 const gchar *session_type;
1379                                 gchar *status = sipe_xml_data(sipe_xml_child(endpoint, "status"));
1380                                 gboolean connected = sipe_strequal("connected", status);
1381                                 g_free(status);
1382
1383                                 if (!connected)
1384                                         continue;
1385
1386                                 session_type = sipe_xml_attribute(endpoint, "session-type");
1387
1388                                 if (sipe_strequal("chat", session_type)) {
1389                                         is_in_im_mcu = TRUE;
1390                                         if (!sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1391                                                 sipe_backend_chat_add(session->chat_session->backend,
1392                                                                       user_uri,
1393                                                                       !just_joined && g_ascii_strcasecmp(user_uri, self));
1394                                         }
1395                                         if (is_operator) {
1396                                                 sipe_backend_chat_operator(session->chat_session->backend,
1397                                                                            user_uri);
1398                                         }
1399                                 } else if (sipe_strequal("audio-video", session_type)) {
1400 #ifdef HAVE_VV
1401                                         if (!session->is_call)
1402                                                 audio_was_added = TRUE;
1403                                         process_conference_av_endpoint(endpoint,
1404                                                                        user_uri,
1405                                                                        self,
1406                                                                        session);
1407 #endif
1408                                 } else if (sipe_strequal("applicationsharing", session_type)) {
1409 #ifdef HAVE_APPSHARE
1410                                         if (!sipe_core_conf_is_viewing_appshare(SIPE_CORE_PUBLIC,
1411                                                                                 session->chat_session)) {
1412                                                 presentation_was_added = process_conference_appshare_endpoint(endpoint);
1413                                         }
1414 #endif
1415                                 }
1416                         }
1417                         if (!is_in_im_mcu) {
1418                                 if (sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1419                                         sipe_backend_chat_remove(session->chat_session->backend,
1420                                                                  user_uri);
1421                                 }
1422                         }
1423                 }
1424                 g_free(role);
1425                 g_free(self);
1426         }
1427
1428 #ifdef HAVE_VV
1429         if (audio_was_added) {
1430                 session->is_call = TRUE;
1431                 ask_accept_voice_conference(sipe_private, focus_uri, NULL,
1432                                             (SipeUserAskCb) call_accept_cb,
1433                                             NULL);
1434         }
1435 #ifdef HAVE_APPSHARE
1436         if (presentation_was_added) {
1437                 sipe_core_appshare_connect_conference(SIPE_CORE_PUBLIC,
1438                                                       session->chat_session,
1439                                                       TRUE);
1440         }
1441 #endif
1442 #endif // HAVE_VV
1443
1444         /* entity-view, locked */
1445         for (node = sipe_xml_child(xn_conference_info, "conference-view/entity-view");
1446              node;
1447              node = sipe_xml_twin(node)) {
1448
1449                 const sipe_xml *xn_type = sipe_xml_child(node, "entity-state/media/entry/type");
1450                 gchar *tmp = NULL;
1451                 if (xn_type && sipe_strequal("chat", (tmp = sipe_xml_data(xn_type)))) {
1452                         const sipe_xml *xn_locked = sipe_xml_child(node, "entity-state/locked");
1453                         if (xn_locked) {
1454                                 gchar *locked = sipe_xml_data(xn_locked);
1455                                 gboolean prev_locked = session->locked;
1456                                 session->locked = sipe_strequal(locked, "true");
1457                                 if (prev_locked && !session->locked) {
1458                                         sipe_user_present_info(sipe_private, session,
1459                                                                _("This conference is no longer locked. Additional participants can now join."));
1460                                 }
1461                                 if (!prev_locked && session->locked) {
1462                                         sipe_user_present_info(sipe_private, session,
1463                                                                _("This conference is locked. Nobody else can join the conference while it is locked."));
1464                                 }
1465
1466                                 SIPE_DEBUG_INFO("sipe_process_conference: session->locked=%s",
1467                                                 session->locked ? "TRUE" : "FALSE");
1468                                 g_free(locked);
1469                         }
1470                 }
1471                 g_free(tmp);
1472         }
1473         sipe_xml_free(xn_conference_info);
1474
1475         if (session->im_mcu_uri) {
1476                 struct sip_dialog *dialog = sipe_dialog_find(session, session->im_mcu_uri);
1477                 if (!dialog) {
1478                         dialog = sipe_dialog_add(session);
1479
1480                         dialog->callid = g_strdup(session->callid);
1481                         dialog->with = g_strdup(session->im_mcu_uri);
1482
1483                         /* send INVITE to IM MCU */
1484                         sipe_im_invite(sipe_private, session, dialog->with, NULL, NULL, NULL, FALSE);
1485                 }
1486         }
1487
1488         sipe_process_pending_invite_queue(sipe_private, session);
1489 }
1490
1491 void
1492 sipe_conf_immcu_closed(struct sipe_core_private *sipe_private,
1493                        struct sip_session *session)
1494 {
1495         sipe_user_present_info(sipe_private, session,
1496                                _("You have been disconnected from this conference."));
1497         sipe_backend_chat_close(session->chat_session->backend);
1498 }
1499
1500 void
1501 conf_session_close(struct sipe_core_private *sipe_private,
1502                    struct sip_session *session)
1503 {
1504         if (session) {
1505                 /* unsubscribe from focus */
1506                 sipe_subscribe_conference(sipe_private,
1507                                           session->chat_session->id, TRUE);
1508
1509                 if (session->focus_dialog) {
1510                         /* send BYE to focus */
1511                         sip_transport_bye(sipe_private, session->focus_dialog);
1512                 }
1513         }
1514 }
1515
1516 void
1517 sipe_process_imdn(struct sipe_core_private *sipe_private,
1518                   struct sipmsg *msg)
1519 {
1520         gchar *with = parse_from(sipmsg_find_header(msg, "From"));
1521         const gchar *callid = sipmsg_find_header(msg, "Call-ID");
1522         static struct sip_session *session;
1523         sipe_xml *xn_imdn;
1524         const sipe_xml *node;
1525         gchar *message_id;
1526         gchar *message;
1527
1528         session = sipe_session_find_chat_or_im(sipe_private, callid, with);
1529         if (!session) {
1530                 SIPE_DEBUG_INFO("sipe_process_imdn: unable to find conf session with callid=%s", callid);
1531                 g_free(with);
1532                 return;
1533         }
1534
1535         xn_imdn = sipe_xml_parse(msg->body, msg->bodylen);
1536         message_id = sipe_xml_data(sipe_xml_child(xn_imdn, "message-id"));
1537
1538         message = g_hash_table_lookup(session->conf_unconfirmed_messages, message_id);
1539
1540         /* recipient */
1541         for (node = sipe_xml_child(xn_imdn, "recipient"); node; node = sipe_xml_twin(node)) {
1542                 gchar *tmp = parse_from(sipe_xml_attribute(node, "uri"));
1543                 gchar *uri = parse_from(tmp);
1544                 gchar *status = sipe_xml_data(sipe_xml_child(node, "status"));
1545                 guint error = status ? g_ascii_strtoull(status, NULL, 10) : 0;
1546                 /* default to error if missing or conversion failed */
1547                 if ((error == 0) || (error >= 300))
1548                         sipe_user_present_message_undelivered(sipe_private,
1549                                                               session,
1550                                                               error,
1551                                                               -1,
1552                                                               uri,
1553                                                               message);
1554                 g_free(status);
1555                 g_free(tmp);
1556                 g_free(uri);
1557         }
1558
1559         sipe_xml_free(xn_imdn);
1560
1561         g_hash_table_remove(session->conf_unconfirmed_messages, message_id);
1562         SIPE_DEBUG_INFO("sipe_process_imdn: removed message %s from conf_unconfirmed_messages(count=%d)",
1563                         message_id, g_hash_table_size(session->conf_unconfirmed_messages));
1564         g_free(message_id);
1565         g_free(with);
1566 }
1567
1568 void sipe_core_conf_make_leader(struct sipe_core_public *sipe_public,
1569                                 gpointer parameter,
1570                                 const gchar *buddy_name)
1571 {
1572         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
1573         struct sipe_chat_session *chat_session = parameter;
1574         struct sip_session *session;
1575
1576         SIPE_DEBUG_INFO("sipe_core_conf_make_leader: chat_title=%s",
1577                         chat_session->title);
1578
1579         session = sipe_session_find_chat(sipe_private, chat_session);
1580         sipe_conf_modify_user_role(sipe_private, session, buddy_name);
1581 }
1582
1583 void sipe_core_conf_remove_from(struct sipe_core_public *sipe_public,
1584                                 gpointer parameter,
1585                                 const gchar *buddy_name)
1586 {
1587         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
1588         struct sipe_chat_session *chat_session = parameter;
1589         struct sip_session *session;
1590
1591         SIPE_DEBUG_INFO("sipe_core_conf_remove_from: chat_title=%s",
1592                         chat_session->title);
1593
1594         session = sipe_session_find_chat(sipe_private, chat_session);
1595         sipe_conf_delete_user(sipe_private, session, buddy_name);
1596 }
1597
1598 gchar *
1599 sipe_conf_build_uri(const gchar *focus_uri, const gchar *session_type)
1600 {
1601         gchar **parts = g_strsplit(focus_uri, ":focus:", 2);
1602         gchar *result = NULL;
1603
1604         if (g_strv_length(parts) == 2) {
1605                 result = g_strconcat(parts[0], ":", session_type, ":", parts[1],
1606                                      NULL);
1607         }
1608
1609         g_strfreev(parts);
1610         return result;
1611 }
1612
1613 static gchar *
1614 access_numbers_info(struct sipe_core_public *sipe_public)
1615 {
1616         GString *result = g_string_new("");
1617
1618 #if GLIB_CHECK_VERSION(2,16,0)
1619         GList *keys = g_hash_table_get_keys(SIPE_CORE_PRIVATE->access_numbers);
1620         keys = g_list_sort(keys, (GCompareFunc)g_strcmp0);
1621
1622         for (; keys; keys = g_list_delete_link(keys, keys)) {
1623                 gchar *value;
1624                 value = g_hash_table_lookup(SIPE_CORE_PRIVATE->access_numbers,
1625                                             keys->data);
1626
1627                 g_string_append(result, keys->data);
1628                 g_string_append(result, "&nbsp;&nbsp;&nbsp;&nbsp;");
1629                 g_string_append(result, value);
1630                 g_string_append(result, "<br/>");
1631         }
1632 #else
1633         (void)sipe_public; /* keep compiler happy */
1634 #endif
1635
1636         return g_string_free(result, FALSE);
1637 }
1638
1639 gchar *
1640 sipe_core_conf_entry_info(struct sipe_core_public *sipe_public,
1641                           struct sipe_chat_session *chat_session)
1642 {
1643         gchar *access_info = access_numbers_info(sipe_public);
1644         gchar *result = g_strdup_printf(
1645                         "<b><font size=\"+1\">%s</font></b><br/>"
1646                         "<b>%s:</b> %s<br/>"
1647                         "<b>%s:</b> %s<br/>"
1648                         "<br/>"
1649                         "<b>%s:</b><br/>"
1650                         "%s<br/>"
1651                         "<br/>"
1652                         "<b>%s:</b> %s<br/>"
1653                         "<br/>"
1654                         "<b><font size=\"+1\">%s</font></b><br/>"
1655                         "%s",
1656                         _("Dial-in info"),
1657                         _("Number"),
1658                         SIPE_CORE_PRIVATE->default_access_number ? SIPE_CORE_PRIVATE->default_access_number : "",
1659                         _("Conference ID"),
1660                         chat_session->dial_in_conf_id ? chat_session->dial_in_conf_id : "",
1661                         _("Meeting link"),
1662                         chat_session->join_url ? chat_session->join_url : "",
1663                         _("Organizer"),
1664                         chat_session->organizer ? chat_session->organizer : "",
1665                         _("Alternative dial-in numbers"),
1666                         access_info);
1667
1668         g_free(access_info);
1669
1670         return result;
1671 }
1672
1673 /*
1674   Local Variables:
1675   mode: c
1676   c-file-style: "bsd"
1677   indent-tabs-mode: t
1678   tab-width: 8
1679   End:
1680 */