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-chat.h"
  50 #include "sipe-conf.h"
  51 #include "sipe-core.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 = NULL;
 389                         static const gchar *launcher_url_prefix[] = {
 390                                 "var domainOwnerJoinLauncherUrl = \"",
 391                                 "sb-data-domainOwnerJoinLauncherUrl=\"",
 392                                 NULL
 393                         };
 394                         const gchar **p;
 395
 396                         SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: no focus URI "
 397                                         "found from URL '%s'", uri);
 398
 399                         for (p = launcher_url_prefix; !launcher_url && *p; ++p) {
 400                                 launcher_url = extract_uri_from_html(body,
 401                                                                      *p,
 402                                                                      strlen(*p));
 403                         }
 404
 405                         if (launcher_url &&
 406                             sipe_conf_check_for_lync_url(sipe_private, launcher_url)) {
 407                                 SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: retrying with URL '%s'",
 408                                                 launcher_url);
 409                                 /* Ownership taken by sipe_conf_check_for_lync_url() */
 410                                 launcher_url = NULL;
 411                         } else {
 412                                 gchar *error;
 413
 414                                 error = g_strdup_printf(_("Can't find a conference URI on this page:\n\n%s"),
 415                                                         uri);
 416
 417                                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 418                                                           _("Failed to join the conference"),
 419                                                           error);
 420                                 g_free(error);
 421                         }
 422
 423                         g_free(launcher_url);
 424                 }
 425         }
 426
 427         g_free(uri);
 428 }
 429
 430 static gboolean sipe_conf_check_for_lync_url(struct sipe_core_private *sipe_private,
 431                                              gchar *uri)
 432 {
 433         if (!(g_str_has_prefix(uri, "https://") ||
 434               g_str_has_prefix(uri, "http://")))
 435                 return(FALSE);
 436
 437         /* URL points to a HTML page with the conference focus URI */
 438         return(sipe_http_request_get(sipe_private,
 439                                      uri,
 440                                      NULL,
 441                                      sipe_conf_lync_url_cb,
 442                                      uri)
 443                != NULL);
 444 }
 445
 446 static void sipe_conf_uri_error(struct sipe_core_private *sipe_private,
 447                                 const gchar *uri)
 448 {
 449         gchar *error = g_strdup_printf(_("\"%s\" is not a valid conference URI"),
 450                                        uri ? uri : "");
 451         sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 452                                   _("Failed to join the conference"),
 453                                   error);
 454         g_free(error);
 455 }
 456
 457 void sipe_core_conf_create(struct sipe_core_public *sipe_public,
 458                            const gchar *uri,
 459                            const gchar *organizer,
 460                            const gchar *meeting_id)
 461 {
 462         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 463
 464         /* SIP URI or HTTP URL */
 465         if (uri) {
 466                 gchar *uri_ue = sipe_utils_uri_unescape(uri);
 467
 468                 SIPE_DEBUG_INFO("sipe_core_conf_create: URI '%s' unescaped '%s'",
 469                                 uri,
 470                                 uri_ue ? uri_ue : "<UNDEFINED>");
 471
 472                 /* takes ownership of "uri_ue" if successful */
 473                 if (!sipe_conf_check_for_lync_url(sipe_private, uri_ue)) {
 474                         gchar *focus_uri = parse_ocs_focus_uri(uri_ue);
 475
 476                         if (focus_uri) {
 477                                 sipe_conf_create(sipe_private, NULL, focus_uri);
 478                                 g_free(focus_uri);
 479                         } else
 480                                 sipe_conf_uri_error(sipe_private, uri);
 481
 482                         g_free(uri_ue);
 483                 }
 484
 485         /* Organizer email and meeting ID */
 486         } else if (organizer && meeting_id) {
 487                 gchar *tmp = g_strdup_printf("sip:%s;gruu;opaque=app:conf:focus:id:%s",
 488                                              organizer, meeting_id);
 489                 gchar *focus_uri = parse_ocs_focus_uri(tmp);
 490
 491                 SIPE_DEBUG_INFO("sipe_core_conf_create: organizer '%s' meeting ID '%s'",
 492                                 organizer,
 493                                 meeting_id);
 494
 495                 if (focus_uri) {
 496                         sipe_conf_create(sipe_private, NULL, focus_uri);
 497                         g_free(focus_uri);
 498                 } else
 499                         sipe_conf_uri_error(sipe_private, tmp);
 500                 g_free(tmp);
 501
 502         } else {
 503                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 504                                           _("Failed to join the conference"),
 505                                           _("Incomplete conference information provided"));
 506         }
 507 }
 508
 509 /** Create new session with Focus URI */
 510 struct sip_session *
 511 sipe_conf_create(struct sipe_core_private *sipe_private,
 512                  struct sipe_chat_session *chat_session,
 513                  const gchar *focus_uri)
 514 {
 515         /* addUser request to the focus.
 516          *
 517          * focus_URI, from, endpoint_GUID
 518          */
 519         static const gchar CCCP_ADD_USER[] =
 520                 "<addUser>"
 521                         "<conferenceKeys confEntity=\"%s\"/>"
 522                         "<ci:user xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" entity=\"%s\">"
 523                                 "<ci:roles>"
 524                                         "<ci:entry>attendee</ci:entry>"
 525                                 "</ci:roles>"
 526                                 "<ci:endpoint entity=\"{%s}\" "
 527                                               "xmlns:msci=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\"/>"
 528                         "</ci:user>"
 529                 "</addUser>";
 530
 531         gchar *self;
 532         struct sip_session *session = sipe_session_add_chat(sipe_private,
 533                                                             chat_session,
 534                                                             FALSE,
 535                                                             focus_uri);
 536
 537         session->focus_dialog = g_new0(struct sip_dialog, 1);
 538         session->focus_dialog->callid = gencallid();
 539         session->focus_dialog->with = g_strdup(session->chat_session->id);
 540         session->focus_dialog->endpoint_GUID = rand_guid();
 541         session->focus_dialog->ourtag = gentag();
 542
 543         self = sip_uri_self(sipe_private);
 544         session->focus_dialog->outgoing_invite =
 545                 cccp_request(sipe_private, "INVITE",
 546                              session->focus_dialog->with, session->focus_dialog,
 547                              process_invite_conf_focus_response,
 548                              CCCP_ADD_USER,
 549                              session->focus_dialog->with, self,
 550                              session->focus_dialog->endpoint_GUID);
 551
 552         /* Rejoin existing session? */
 553         if (chat_session) {
 554                 SIPE_DEBUG_INFO("sipe_conf_create: rejoin '%s' (%s)",
 555                                 chat_session->title,
 556                                 chat_session->id);
 557                 sipe_backend_chat_rejoin(SIPE_CORE_PUBLIC,
 558                                          chat_session->backend,
 559                                          self,
 560                                          chat_session->title);
 561         }
 562         g_free(self);
 563
 564         return(session);
 565 }
 566
 567 /** Modify User Role */
 568 void
 569 sipe_conf_modify_user_role(struct sipe_core_private *sipe_private,
 570                            struct sip_session *session,
 571                            const gchar* who)
 572 {
 573         /* modifyUserRoles request to the focus. Makes user a leader.
 574          *
 575          * focus_uri (%s)
 576          * who (%s)
 577          */
 578         static const gchar CCCP_MODIFY_USER_ROLES[] =
 579                 "<modifyUserRoles>"
 580                         "<userKeys confEntity=\"%s\" userEntity=\"%s\"/>"
 581                         "<user-roles xmlns=\"urn:ietf:params:xml:ns:conference-info\">"
 582                                 "<entry>presenter</entry>"
 583                         "</user-roles>"
 584                 "</modifyUserRoles>";
 585
 586         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 587                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_modify_user_role: no dialog with focus, exiting.");
 588                 return;
 589         }
 590
 591         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 592                      session->focus_dialog, NULL,
 593                      CCCP_MODIFY_USER_ROLES,
 594                      session->focus_dialog->with, who);
 595 }
 596
 597 /**
 598  * Check conference lock status
 599  */
 600 sipe_chat_lock_status sipe_core_chat_lock_status(struct sipe_core_public *sipe_public,
 601                                                  struct sipe_chat_session *chat_session)
 602 {
 603         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 604         sipe_chat_lock_status status = SIPE_CHAT_LOCK_STATUS_NOT_ALLOWED;
 605
 606         if (chat_session &&
 607             (chat_session->type == SIPE_CHAT_TYPE_CONFERENCE)) {
 608                 struct sip_session *session = sipe_session_find_chat(sipe_private,
 609                                                                      chat_session);
 610                 if (session) {
 611                         gchar *self = sip_uri_self(sipe_private);
 612
 613                         /* Only operators are allowed to change the lock status */
 614                         if (sipe_backend_chat_is_operator(chat_session->backend, self)) {
 615                                 status = session->locked ?
 616                                         SIPE_CHAT_LOCK_STATUS_LOCKED :
 617                                         SIPE_CHAT_LOCK_STATUS_UNLOCKED;
 618                         }
 619
 620                         g_free(self);
 621                 }
 622         }
 623
 624         return(status);
 625 }
 626
 627 /**
 628  * Modify Conference Lock
 629  * Sends request to Focus.
 630  * INFO method is a carrier of application/cccp+xml
 631  */
 632 void
 633 sipe_core_chat_modify_lock(struct sipe_core_public *sipe_public,
 634                            struct sipe_chat_session *chat_session,
 635                            const gboolean locked)
 636 {
 637         /* modifyConferenceLock request to the focus. Locks/unlocks conference.
 638          *
 639          * focus_uri (%s)
 640          * locked (%s) "true" or "false" values applicable
 641          */
 642         static const gchar CCCP_MODIFY_CONFERENCE_LOCK[] =
 643                 "<modifyConferenceLock>"
 644                         "<conferenceKeys confEntity=\"%s\"/>"
 645                         "<locked>%s</locked>"
 646                 "</modifyConferenceLock>";
 647
 648         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 649
 650         struct sip_session *session = sipe_session_find_chat(sipe_private,
 651                                                              chat_session);
 652
 653         if (!session) return;
 654         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 655                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_modify_conference_lock: no dialog with focus, exiting.");
 656                 return;
 657         }
 658
 659         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 660                      session->focus_dialog, NULL,
 661                      CCCP_MODIFY_CONFERENCE_LOCK,
 662                      session->focus_dialog->with,
 663                      locked ? "true" : "false");
 664 }
 665
 666 /** Modify Delete User */
 667 void
 668 sipe_conf_delete_user(struct sipe_core_private *sipe_private,
 669                       struct sip_session *session,
 670                       const gchar* who)
 671 {
 672         /* deleteUser request to the focus. Removes a user from the conference.
 673          *
 674          * focus_uri (%s)
 675          * who (%s)
 676          */
 677         static const gchar CCCP_DELETE_USER[] =
 678                 "<deleteUser>"
 679                         "<userKeys confEntity=\"%s\" userEntity=\"%s\"/>"
 680                 "</deleteUser>";
 681
 682         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 683                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_delete_user: no dialog with focus, exiting.");
 684                 return;
 685         }
 686
 687         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 688                      session->focus_dialog, NULL,
 689                      CCCP_DELETE_USER,
 690                      session->focus_dialog->with, who);
 691 }
 692
 693 void
 694 sipe_conf_announce_audio_mute_state(struct sipe_core_private *sipe_private,
 695                                     struct sip_session *session,
 696                                     gboolean is_muted)
 697 {
 698         // See [MS-CONFAV] 3.2.5.4 and 4.3
 699         static const gchar CCCP_MODIFY_ENDPOINT_MEDIA[] =
 700                 "<modifyEndpointMedia mscp:mcuUri=\"%s\""
 701                 " xmlns:mscp=\"http://schemas.microsoft.com/rtc/2005/08/cccpextensions\">"
 702                         "<mediaKeys confEntity=\"%s\" userEntity=\"%s\""
 703                         " endpointEntity=\"%s\" mediaId=\"%d\"/>"
 704                         "<ci:media"
 705                         " xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" id=\"%d\">"
 706                                 "<ci:type>audio</ci:type>"
 707                                 "<ci:status>%s</ci:status>"
 708                                 "<media-ingress-filter"
 709                                 " xmlns=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\">"
 710                                         "%s"
 711                                 "</media-ingress-filter>"
 712                         "</ci:media>"
 713                 "</modifyEndpointMedia>";
 714
 715         gchar *mcu_uri = sipe_conf_build_uri(session->focus_dialog->with,
 716                                              "audio-video");
 717         gchar *self = sip_uri_self(sipe_private);
 718
 719         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 720                      session->focus_dialog, NULL,
 721                      CCCP_MODIFY_ENDPOINT_MEDIA,
 722                      mcu_uri, session->focus_dialog->with, self,
 723                      session->audio_video_entity,
 724                      session->audio_media_id, session->audio_media_id,
 725                      is_muted ? "recvonly" : "sendrecv",
 726                      is_muted ? "block" : "unblock");
 727
 728         g_free(mcu_uri);
 729         g_free(self);
 730 }
 731
 732 /** Invite counterparty to join conference callback */
 733 static gboolean
 734 process_invite_conf_response(struct sipe_core_private *sipe_private,
 735                              struct sipmsg *msg,
 736                              SIPE_UNUSED_PARAMETER struct transaction *trans)
 737 {
 738         struct sip_dialog *dialog = g_new0(struct sip_dialog, 1);
 739
 740         dialog->callid = g_strdup(sipmsg_find_header(msg, "Call-ID"));
 741         dialog->cseq = sipmsg_parse_cseq(msg);
 742         dialog->with = parse_from(sipmsg_find_header(msg, "To"));
 743         sipe_dialog_parse(dialog, msg, TRUE);
 744
 745         if (msg->response >= 200) {
 746                 /* send ACK to counterparty */
 747                 dialog->cseq--;
 748                 sip_transport_ack(sipe_private, dialog);
 749                 dialog->outgoing_invite = NULL;
 750                 dialog->is_established = TRUE;
 751         }
 752
 753         if (msg->response >= 400) {
 754                 SIPE_DEBUG_INFO("process_invite_conf_response: INVITE response is not 200. Failed to invite %s.", dialog->with);
 755                 /* @TODO notify user of failure to invite counterparty */
 756                 sipe_dialog_free(dialog);
 757                 return FALSE;
 758         }
 759
 760         if (msg->response >= 200) {
 761                 struct sip_session *session = sipe_session_find_im(sipe_private, dialog->with);
 762                 struct sip_dialog *im_dialog = sipe_dialog_find(session, dialog->with);
 763
 764                 /* close IM session to counterparty */
 765                 if (im_dialog) {
 766                         sip_transport_bye(sipe_private, im_dialog);
 767                         sipe_dialog_remove(session, dialog->with);
 768                 }
 769         }
 770
 771         sipe_dialog_free(dialog);
 772         return TRUE;
 773 }
 774
 775 /**
 776  * Invites counterparty to join conference.
 777  */
 778 void
 779 sipe_invite_conf(struct sipe_core_private *sipe_private,
 780                  struct sip_session *session,
 781                  const gchar* who)
 782 {
 783         gchar *hdr;
 784         gchar *contact;
 785         gchar *body;
 786         struct sip_dialog *dialog = NULL;
 787
 788         /* It will be short lived special dialog.
 789          * Will not be stored in session.
 790          */
 791         dialog = g_new0(struct sip_dialog, 1);
 792         dialog->callid = gencallid();
 793         dialog->with = g_strdup(who);
 794         dialog->ourtag = gentag();
 795
 796         contact = get_contact(sipe_private);
 797         hdr = g_strdup_printf(
 798                 "Supported: ms-sender\r\n"
 799                 "Contact: %s\r\n"
 800                 "Content-Type: application/ms-conf-invite+xml\r\n",
 801                 contact);
 802         g_free(contact);
 803
 804         body = g_strdup_printf(
 805                 SIPE_SEND_CONF_INVITE,
 806                 session->chat_session->id,
 807                 session->subject ? session->subject : ""
 808                 );
 809
 810         sip_transport_invite(sipe_private,
 811                              hdr,
 812                              body,
 813                              dialog,
 814                              process_invite_conf_response);
 815
 816         sipe_dialog_free(dialog);
 817         g_free(body);
 818         g_free(hdr);
 819 }
 820
 821 /** Create conference callback */
 822 static gboolean
 823 process_conf_add_response(struct sipe_core_private *sipe_private,
 824                           struct sipmsg *msg,
 825                           struct transaction *trans)
 826 {
 827         if (msg->response >= 400) {
 828                 SIPE_DEBUG_INFO_NOFORMAT("process_conf_add_response: SERVICE response is not 200. Failed to create conference.");
 829                 /* @TODO notify user of failure to create conference */
 830                 return FALSE;
 831         }
 832         if (msg->response == 200) {
 833                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 834                 if (sipe_strequal("success", sipe_xml_attribute(xn_response, "code")))
 835                 {
 836                         gchar *who = trans->payload->data;
 837                         const sipe_xml *xn_conference_info = sipe_xml_child(xn_response, "addConference/conference-info");
 838                         struct sip_session *session = sipe_conf_create(sipe_private,
 839                                                                        NULL,
 840                                                                        sipe_xml_attribute(xn_conference_info,
 841                                                                                           "entity"));
 842
 843                         SIPE_DEBUG_INFO("process_conf_add_response: session->focus_uri=%s",
 844                                         session->chat_session->id);
 845
 846                         session->pending_invite_queue = sipe_utils_slist_insert_unique_sorted(session->pending_invite_queue,
 847                                                                                               g_strdup(who),
 848                                                                                               (GCompareFunc)strcmp,
 849                                                                                               g_free);
 850                 }
 851                 sipe_xml_free(xn_response);
 852         }
 853
 854         return TRUE;
 855 }
 856
 857 /**
 858  * Creates conference.
 859  */
 860 void
 861 sipe_conf_add(struct sipe_core_private *sipe_private,
 862               const gchar* who)
 863 {
 864         gchar *conference_id;
 865         struct transaction *trans;
 866         time_t expiry = time(NULL) + 7*60*60; /* 7 hours */
 867         char *expiry_time;
 868
 869         /* addConference request to the focus factory.
 870          *
 871          * conference_id        (%s) Ex.: 8386E6AEAAA41E4AA6627BA76D43B6D1
 872          * expiry_time          (%s) Ex.: 2009-07-13T17:57:09Z
 873          * conference_view      (%s) Ex.: <msci:entity-view entity="chat"/>
 874          */
 875         static const gchar CCCP_ADD_CONFERENCE[] =
 876                 "<addConference>"
 877                         "<ci:conference-info xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" "
 878                                              "entity=\"\" "
 879                                              "xmlns:msci=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\">"
 880                                 "<ci:conference-description>"
 881                                         "<ci:subject/>"
 882                                         "<msci:conference-id>%s</msci:conference-id>"
 883                                         "<msci:expiry-time>%s</msci:expiry-time>"
 884                                         "<msci:admission-policy>openAuthenticated</msci:admission-policy>"
 885                                 "</ci:conference-description>"
 886                                 "<msci:conference-view>%s</msci:conference-view>"
 887                         "</ci:conference-info>"
 888                 "</addConference>";
 889
 890         static const gchar *DESIRED_MCU_TYPES[] = {
 891                 "chat",
 892 #ifdef HAVE_VV
 893                 "audio-video",
 894 #endif
 895 #ifdef HAVE_APPSHARE
 896                 "applicationsharing",
 897 #endif
 898                 NULL
 899         };
 900
 901         GString *conference_view = g_string_new("");
 902         const gchar **type;
 903
 904         for (type = DESIRED_MCU_TYPES; *type; ++type ) {
 905                 if (sipe_conf_supports_mcu_type(sipe_private, *type)) {
 906                         g_string_append(conference_view, "<msci:entity-view entity=\"");
 907                         g_string_append(conference_view, *type);
 908                         g_string_append(conference_view, "\"/>");
 909                 }
 910         }
 911
 912         expiry_time = sipe_utils_time_to_str(expiry);
 913         conference_id = genconfid();
 914         trans = cccp_request(sipe_private, "SERVICE", sipe_private->focus_factory_uri,
 915                              NULL, process_conf_add_response,
 916                              CCCP_ADD_CONFERENCE,
 917                              conference_id, expiry_time, conference_view->str);
 918         g_free(conference_id);
 919         g_free(expiry_time);
 920         g_string_free(conference_view, TRUE);
 921
 922         if (trans) {
 923                 struct transaction_payload *payload = g_new0(struct transaction_payload, 1);
 924
 925                 payload->destroy = g_free;
 926                 payload->data = g_strdup(who);
 927                 trans->payload = payload;
 928         }
 929 }
 930
 931 static void
 932 accept_incoming_invite_conf(struct sipe_core_private *sipe_private,
 933                             gchar *focus_uri,
 934                             gboolean audio,
 935                             struct sipmsg *msg)
 936 {
 937         struct sip_session *session;
 938         gchar *newTag = gentag();
 939         const gchar *oldHeader = sipmsg_find_header(msg, "To");
 940         gchar *newHeader;
 941
 942         newHeader = g_strdup_printf("%s;tag=%s", oldHeader, newTag);
 943         g_free(newTag);
 944         sipmsg_remove_header_now(msg, "To");
 945         sipmsg_add_header_now(msg, "To", newHeader);
 946         g_free(newHeader);
 947
 948         /* acknowledge invite */
 949         sip_transport_response(sipe_private, msg, 200, "OK", NULL);
 950
 951         /* add self to conf */
 952         session = sipe_conf_create(sipe_private, NULL, focus_uri);
 953         session->is_call = audio;
 954 }
 955
 956 struct conf_accept_ctx {
 957         gchar *focus_uri;
 958         struct sipmsg *msg;
 959         struct sipe_user_ask_ctx *ask_ctx;
 960
 961         SipeUserAskCb accept_cb;
 962         SipeUserAskCb decline_cb;
 963
 964         gpointer user_data;
 965 };
 966
 967 static void
 968 conf_accept_ctx_free(struct conf_accept_ctx *ctx)
 969 {
 970         g_return_if_fail(ctx != NULL);
 971
 972         sipmsg_free(ctx->msg);
 973         g_free(ctx->focus_uri);
 974         g_free(ctx);
 975 }
 976
 977 static void
 978 conf_accept_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
 979 {
 980         accept_incoming_invite_conf(sipe_private, ctx->focus_uri, TRUE, ctx->msg);
 981 }
 982
 983 static void
 984 conf_decline_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
 985 {
 986         sip_transport_response(sipe_private,
 987                                ctx->msg,
 988                                603, "Decline", NULL);
 989 }
 990
 991 void
 992 sipe_conf_cancel_unaccepted(struct sipe_core_private *sipe_private,
 993                             struct sipmsg *msg)
 994 {
 995         const gchar *callid1 = msg ? sipmsg_find_header(msg, "Call-ID") : NULL;
 996         GSList *it = sipe_private->sessions_to_accept;
 997         while (it) {
 998                 struct conf_accept_ctx *ctx = it->data;
 999                 const gchar *callid2 = NULL;
1000
1001                 if (msg && ctx->msg)
1002                         callid2 = sipmsg_find_header(ctx->msg, "Call-ID");
1003
1004                 if (sipe_strequal(callid1, callid2)) {
1005                         GSList *tmp;
1006
1007                         if (ctx->msg)
1008                                 sip_transport_response(sipe_private, ctx->msg,
1009                                                        487, "Request Terminated", NULL);
1010
1011                         if (msg)
1012                                 sip_transport_response(sipe_private, msg, 200, "OK", NULL);
1013
1014                         sipe_user_close_ask(ctx->ask_ctx);
1015                         conf_accept_ctx_free(ctx);
1016
1017                         tmp = it;
1018                         it = it->next;
1019
1020                         sipe_private->sessions_to_accept =
1021                                 g_slist_delete_link(sipe_private->sessions_to_accept, tmp);
1022
1023                         if (callid1)
1024                                 break;
1025                 } else
1026                         it = it->next;
1027         }
1028 }
1029
1030 static void
1031 accept_invitation_cb(struct sipe_core_private *sipe_private, gpointer data)
1032 {
1033         struct conf_accept_ctx *ctx = data;
1034
1035         sipe_private->sessions_to_accept =
1036                         g_slist_remove(sipe_private->sessions_to_accept, ctx);
1037
1038         if (ctx->accept_cb) {
1039                 ctx->accept_cb(sipe_private, ctx);
1040         }
1041
1042         conf_accept_ctx_free(ctx);
1043 }
1044
1045 static void
1046 decline_invitation_cb(struct sipe_core_private *sipe_private, gpointer data)
1047 {
1048         struct conf_accept_ctx *ctx = data;
1049
1050         sipe_private->sessions_to_accept =
1051                         g_slist_remove(sipe_private->sessions_to_accept, ctx);
1052
1053         if (ctx->decline_cb) {
1054                 ctx->decline_cb(sipe_private, ctx);
1055         }
1056
1057         conf_accept_ctx_free(ctx);
1058 }
1059
1060 static void
1061 ask_accept_invitation(struct sipe_core_private *sipe_private,
1062                       const gchar *focus_uri,
1063                       const gchar *question,
1064                       struct sipmsg *msg,
1065                       SipeUserAskCb accept_cb,
1066                       SipeUserAskCb decline_cb,
1067                       gpointer user_data)
1068 {
1069         gchar **parts;
1070         gchar *alias;
1071         gchar *question_str;
1072         struct conf_accept_ctx *ctx;
1073
1074         parts = g_strsplit(focus_uri, ";", 2);
1075         alias = sipe_buddy_get_alias(sipe_private, parts[0]);
1076
1077         question_str = g_strdup_printf("%s %s", alias ? alias : parts[0], question);
1078
1079         g_free(alias);
1080         g_strfreev(parts);
1081
1082         ctx = g_new0(struct conf_accept_ctx, 1);
1083         sipe_private->sessions_to_accept =
1084                         g_slist_append(sipe_private->sessions_to_accept, ctx);
1085
1086         ctx->focus_uri = g_strdup(focus_uri);
1087         ctx->msg = msg ? sipmsg_copy(msg) : NULL;
1088         ctx->accept_cb = accept_cb;
1089         ctx->decline_cb = decline_cb;
1090         ctx->user_data = user_data;
1091         ctx->ask_ctx = sipe_user_ask(sipe_private, question_str,
1092                                      _("Accept"), accept_invitation_cb,
1093                                      _("Decline"), decline_invitation_cb,
1094                                      ctx);
1095
1096         g_free(question_str);
1097 }
1098
1099 static void
1100 ask_accept_voice_conference(struct sipe_core_private *sipe_private,
1101                             const gchar *focus_uri,
1102                             struct sipmsg *msg,
1103                             SipeUserAskCb accept_cb,
1104                             SipeUserAskCb decline_cb)
1105 {
1106         gchar *question;
1107         const gchar *novv_note;
1108
1109 #ifdef HAVE_VV
1110         novv_note = "";
1111 #else
1112         novv_note = _("\n\nAs this client was not compiled with voice call "
1113                       "support, if you accept, you will be able to contact "
1114                       "the other participants only via IM session.");
1115 #endif
1116
1117         question = g_strdup_printf(_("wants to invite you "
1118                                      "to a conference call%s"), novv_note);
1119
1120         ask_accept_invitation(sipe_private, focus_uri, question, msg,
1121                               accept_cb, decline_cb, NULL);
1122
1123         g_free(question);
1124 }
1125
1126 void
1127 process_incoming_invite_conf(struct sipe_core_private *sipe_private,
1128                              struct sipmsg *msg)
1129 {
1130         sipe_xml *xn_conferencing = sipe_xml_parse(msg->body, msg->bodylen);
1131         const sipe_xml *xn_focus_uri = sipe_xml_child(xn_conferencing, "focus-uri");
1132         const sipe_xml *xn_audio = sipe_xml_child(xn_conferencing, "audio");
1133         gchar *focus_uri = sipe_xml_data(xn_focus_uri);
1134         gboolean audio = sipe_strequal(sipe_xml_attribute(xn_audio, "available"), "true");
1135
1136         sipe_xml_free(xn_conferencing);
1137
1138         SIPE_DEBUG_INFO("We have received invitation to Conference. Focus URI=%s", focus_uri);
1139
1140         if (audio) {
1141                 sip_transport_response(sipe_private, msg, 180, "Ringing", NULL);
1142                 ask_accept_voice_conference(sipe_private, focus_uri, msg,
1143                                             (SipeUserAskCb) conf_accept_cb,
1144                                             (SipeUserAskCb) conf_decline_cb);
1145
1146         } else {
1147                 accept_incoming_invite_conf(sipe_private, focus_uri, FALSE, msg);
1148         }
1149
1150         g_free(focus_uri);
1151 }
1152
1153 #ifdef HAVE_VV
1154
1155 static void
1156 process_conference_av_endpoint(const sipe_xml *endpoint,
1157                                const gchar *user_uri,
1158                                const gchar *self_uri,
1159                                struct sip_session *session)
1160 {
1161         const sipe_xml *media;
1162         const gchar *new_entity;
1163
1164         if (!sipe_strequal(user_uri, self_uri)) {
1165                 /* We are interested only in our own endpoint data. */
1166                 return;
1167         }
1168
1169         new_entity = sipe_xml_attribute(endpoint, "entity");
1170         if (!sipe_strequal(session->audio_video_entity, new_entity)) {
1171                 g_free(session->audio_video_entity);
1172                 session->audio_video_entity = g_strdup(new_entity);
1173         }
1174
1175         session->audio_media_id = 0;
1176
1177         media = sipe_xml_child(endpoint, "media");
1178         for (; media; media = sipe_xml_twin(media)) {
1179                 gchar *type = sipe_xml_data(sipe_xml_child(media, "type"));
1180
1181                 if (sipe_strequal(type, "audio")) {
1182                         session->audio_media_id =
1183                                         sipe_xml_int_attribute(media, "id", 0);
1184                 }
1185
1186                 g_free(type);
1187
1188                 if (session->audio_media_id != 0) {
1189                         break;
1190                 }
1191         }
1192 }
1193
1194 static void
1195 call_accept_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
1196 {
1197         struct sip_session *session;
1198         session = sipe_session_find_conference(sipe_private, ctx->focus_uri);
1199
1200         if (session) {
1201                 sipe_core_media_connect_conference(SIPE_CORE_PUBLIC,
1202                                                    session->chat_session);
1203         }
1204 }
1205
1206 #ifdef HAVE_APPSHARE
1207 gboolean
1208 sipe_core_conf_is_viewing_appshare(struct sipe_core_public *sipe_public,
1209                                    struct sipe_chat_session *chat_session)
1210 {
1211         if (chat_session) {
1212                 gchar *mcu_uri;
1213                 GList *calls;
1214
1215                 mcu_uri = sipe_conf_build_uri(chat_session->id, "applicationsharing");
1216                 calls = g_hash_table_get_values(SIPE_CORE_PRIVATE->media_calls);
1217
1218                 for (; calls; calls = g_list_delete_link(calls, calls)) {
1219                         struct sipe_media_call *call = calls->data;
1220                         if (sipe_strequal(call->with, mcu_uri)) {
1221                                 break;
1222                         }
1223                 }
1224
1225                 g_free(mcu_uri);
1226
1227                 if (calls != NULL) {
1228                         g_list_free(calls);
1229                         return TRUE;
1230                 }
1231         }
1232
1233         return FALSE;
1234 }
1235
1236 static gboolean
1237 process_conference_appshare_endpoint(const sipe_xml *endpoint)
1238 {
1239         gboolean presentation_added = FALSE;
1240         const sipe_xml *media;
1241
1242         for (media = sipe_xml_child(endpoint, "media");
1243              media && !presentation_added;
1244              media = sipe_xml_twin(media)) {
1245                 gchar *type;
1246                 gchar *media_state;
1247                 gchar *status;
1248
1249                 type = sipe_xml_data(sipe_xml_child(media, "type"));
1250                 media_state = sipe_xml_data(sipe_xml_child(media, "media-state"));
1251                 status = sipe_xml_data(sipe_xml_child(media, "status"));
1252
1253                 if (sipe_strequal(type, "applicationsharing") &&
1254                     sipe_strequal(media_state, "connected") &&
1255                     sipe_strequal(status, "sendonly")) {
1256                         presentation_added = TRUE;
1257                 }
1258
1259                 g_free(type);
1260                 g_free(media_state);
1261                 g_free(status);
1262         }
1263
1264         return(presentation_added);
1265 }
1266 #endif // HAVE_APPSHARE
1267 #endif // HAVE_VV
1268
1269 void
1270 sipe_process_conference(struct sipe_core_private *sipe_private,
1271                         struct sipmsg *msg)
1272 {
1273         sipe_xml *xn_conference_info;
1274         const sipe_xml *node;
1275         const sipe_xml *xn_subject;
1276         const gchar *focus_uri;
1277         struct sip_session *session;
1278         gboolean just_joined = FALSE;
1279 #ifdef HAVE_VV
1280         gboolean audio_was_added = FALSE;
1281 #ifdef HAVE_APPSHARE
1282         gboolean presentation_was_added = FALSE;
1283 #endif
1284 #endif // HAVE_VV
1285
1286         if (msg->response != 0 && msg->response != 200) return;
1287
1288         if (msg->bodylen == 0 || msg->body == NULL || !sipe_strequal(sipmsg_find_header(msg, "Event"), "conference")) return;
1289
1290         xn_conference_info = sipe_xml_parse(msg->body, msg->bodylen);
1291         if (!xn_conference_info) return;
1292
1293         focus_uri = sipe_xml_attribute(xn_conference_info, "entity");
1294         session = sipe_session_find_conference(sipe_private, focus_uri);
1295
1296         if (!session) {
1297                 SIPE_DEBUG_INFO("sipe_process_conference: unable to find conf session with focus=%s", focus_uri);
1298                 return;
1299         }
1300
1301         if (!session->chat_session->backend) {
1302                 gchar *self = sip_uri_self(sipe_private);
1303
1304                 /* create chat */
1305                 session->chat_session->backend = sipe_backend_chat_create(SIPE_CORE_PUBLIC,
1306                                                                           session->chat_session,
1307                                                                           session->chat_session->title,
1308                                                                           self);
1309                 just_joined = TRUE;
1310                 /* @TODO ask for full state (re-subscribe) if it was a partial one -
1311                  * this is to obtain full list of conference participants.
1312                  */
1313                  g_free(self);
1314         }
1315
1316         /* subject */
1317         if ((xn_subject = sipe_xml_child(xn_conference_info, "conference-description/subject"))) {
1318                 g_free(session->subject);
1319                 session->subject = sipe_xml_data(xn_subject);
1320                 sipe_backend_chat_topic(session->chat_session->backend, session->subject);
1321                 SIPE_DEBUG_INFO("sipe_process_conference: subject=%s", session->subject ? session->subject : "");
1322         }
1323
1324         /* IM MCU URI */
1325         if (!session->im_mcu_uri) {
1326                 for (node = sipe_xml_child(xn_conference_info, "conference-description/conf-uris/entry");
1327                      node;
1328                      node = sipe_xml_twin(node))
1329                 {
1330                         gchar *purpose = sipe_xml_data(sipe_xml_child(node, "purpose"));
1331
1332                         if (sipe_strequal("chat", purpose)) {
1333                                 g_free(purpose);
1334                                 session->im_mcu_uri = sipe_xml_data(sipe_xml_child(node, "uri"));
1335                                 SIPE_DEBUG_INFO("sipe_process_conference: im_mcu_uri=%s", session->im_mcu_uri);
1336                                 break;
1337                         }
1338                         g_free(purpose);
1339                 }
1340         }
1341
1342         /* organizer */
1343         if (!session->chat_session->organizer) {
1344                 node = sipe_xml_child(xn_conference_info, "conference-description/organizer/display-name");
1345                 if (node) {
1346                         session->chat_session->organizer = sipe_xml_data(node);
1347                 }
1348         }
1349
1350         /* join URL */
1351         if (!session->chat_session->join_url) {
1352                 node = sipe_xml_child(xn_conference_info, "conference-description/join-url");
1353                 if (node) {
1354                         session->chat_session->join_url = sipe_xml_data(node);
1355                 }
1356         }
1357
1358         /* dial-in conference id */
1359         if (!session->chat_session->dial_in_conf_id) {
1360                 node = sipe_xml_child(xn_conference_info, "conference-description/pstn-access/id");
1361                 if (node) {
1362                         session->chat_session->dial_in_conf_id = sipe_xml_data(node);
1363                 }
1364         }
1365
1366         /* users */
1367         for (node = sipe_xml_child(xn_conference_info, "users/user"); node; node = sipe_xml_twin(node)) {
1368                 const gchar *user_uri = sipe_xml_attribute(node, "entity");
1369                 const gchar *state = sipe_xml_attribute(node, "state");
1370                 gchar *role = sipe_xml_data(sipe_xml_child(node, "roles/entry"));
1371                 gboolean is_operator = sipe_strequal(role, "presenter");
1372                 gboolean is_in_im_mcu = FALSE;
1373                 gchar *self = sip_uri_self(sipe_private);
1374
1375                 if (sipe_strequal("deleted", state)) {
1376                         if (sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1377                                 sipe_backend_chat_remove(session->chat_session->backend,
1378                                                          user_uri);
1379                         }
1380                 } else {
1381                         /* endpoints */
1382                         const sipe_xml *endpoint;
1383                         for (endpoint = sipe_xml_child(node, "endpoint"); endpoint; endpoint = sipe_xml_twin(endpoint)) {
1384                                 const gchar *session_type;
1385                                 gchar *status = sipe_xml_data(sipe_xml_child(endpoint, "status"));
1386                                 gboolean connected = sipe_strequal("connected", status);
1387                                 g_free(status);
1388
1389                                 if (!connected)
1390                                         continue;
1391
1392                                 session_type = sipe_xml_attribute(endpoint, "session-type");
1393
1394                                 if (sipe_strequal("chat", session_type)) {
1395                                         is_in_im_mcu = TRUE;
1396                                         if (!sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1397                                                 sipe_backend_chat_add(session->chat_session->backend,
1398                                                                       user_uri,
1399                                                                       !just_joined && g_ascii_strcasecmp(user_uri, self));
1400                                         }
1401                                         if (is_operator) {
1402                                                 sipe_backend_chat_operator(session->chat_session->backend,
1403                                                                            user_uri);
1404                                         }
1405                                 } else if (sipe_strequal("audio-video", session_type)) {
1406 #ifdef HAVE_VV
1407                                         if (!session->is_call)
1408                                                 audio_was_added = TRUE;
1409                                         process_conference_av_endpoint(endpoint,
1410                                                                        user_uri,
1411                                                                        self,
1412                                                                        session);
1413 #endif
1414                                 } else if (sipe_strequal("applicationsharing", session_type)) {
1415 #ifdef HAVE_APPSHARE
1416                                         if (!sipe_core_conf_is_viewing_appshare(SIPE_CORE_PUBLIC,
1417                                                                                 session->chat_session)) {
1418                                                 presentation_was_added = process_conference_appshare_endpoint(endpoint);
1419                                         }
1420 #endif
1421                                 }
1422                         }
1423                         if (!is_in_im_mcu) {
1424                                 if (sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1425                                         sipe_backend_chat_remove(session->chat_session->backend,
1426                                                                  user_uri);
1427                                 }
1428                         }
1429                 }
1430                 g_free(role);
1431                 g_free(self);
1432         }
1433
1434 #ifdef HAVE_VV
1435         if (audio_was_added) {
1436                 session->is_call = TRUE;
1437                 ask_accept_voice_conference(sipe_private, focus_uri, NULL,
1438                                             (SipeUserAskCb) call_accept_cb,
1439                                             NULL);
1440         }
1441 #ifdef HAVE_APPSHARE
1442         if (presentation_was_added) {
1443                 sipe_core_appshare_connect_conference(SIPE_CORE_PUBLIC,
1444                                                       session->chat_session,
1445                                                       TRUE);
1446         }
1447 #endif
1448 #endif // HAVE_VV
1449
1450         /* entity-view, locked */
1451         for (node = sipe_xml_child(xn_conference_info, "conference-view/entity-view");
1452              node;
1453              node = sipe_xml_twin(node)) {
1454
1455                 const sipe_xml *xn_type = sipe_xml_child(node, "entity-state/media/entry/type");
1456                 gchar *tmp = NULL;
1457                 if (xn_type && sipe_strequal("chat", (tmp = sipe_xml_data(xn_type)))) {
1458                         const sipe_xml *xn_locked = sipe_xml_child(node, "entity-state/locked");
1459                         if (xn_locked) {
1460                                 gchar *locked = sipe_xml_data(xn_locked);
1461                                 gboolean prev_locked = session->locked;
1462                                 session->locked = sipe_strequal(locked, "true");
1463                                 if (prev_locked && !session->locked) {
1464                                         sipe_user_present_info(sipe_private, session,
1465                                                                _("This conference is no longer locked. Additional participants can now join."));
1466                                 }
1467                                 if (!prev_locked && session->locked) {
1468                                         sipe_user_present_info(sipe_private, session,
1469                                                                _("This conference is locked. Nobody else can join the conference while it is locked."));
1470                                 }
1471
1472                                 SIPE_DEBUG_INFO("sipe_process_conference: session->locked=%s",
1473                                                 session->locked ? "TRUE" : "FALSE");
1474                                 g_free(locked);
1475                         }
1476                 }
1477                 g_free(tmp);
1478         }
1479         sipe_xml_free(xn_conference_info);
1480
1481         if (session->im_mcu_uri) {
1482                 struct sip_dialog *dialog = sipe_dialog_find(session, session->im_mcu_uri);
1483                 if (!dialog) {
1484                         dialog = sipe_dialog_add(session);
1485
1486                         dialog->callid = g_strdup(session->callid);
1487                         dialog->with = g_strdup(session->im_mcu_uri);
1488
1489                         /* send INVITE to IM MCU */
1490                         sipe_im_invite(sipe_private, session, dialog->with, NULL, NULL, NULL, FALSE);
1491                 }
1492         }
1493
1494         sipe_process_pending_invite_queue(sipe_private, session);
1495 }
1496
1497 void
1498 sipe_conf_immcu_closed(struct sipe_core_private *sipe_private,
1499                        struct sip_session *session)
1500 {
1501         sipe_user_present_info(sipe_private, session,
1502                                _("You have been disconnected from this conference."));
1503         sipe_backend_chat_close(session->chat_session->backend);
1504 }
1505
1506 void
1507 conf_session_close(struct sipe_core_private *sipe_private,
1508                    struct sip_session *session)
1509 {
1510         if (session) {
1511                 /* unsubscribe from focus */
1512                 sipe_subscribe_conference(sipe_private,
1513                                           session->chat_session->id, TRUE);
1514
1515                 if (session->focus_dialog) {
1516                         /* send BYE to focus */
1517                         sip_transport_bye(sipe_private, session->focus_dialog);
1518                 }
1519         }
1520 }
1521
1522 void
1523 sipe_process_imdn(struct sipe_core_private *sipe_private,
1524                   struct sipmsg *msg)
1525 {
1526         gchar *with = parse_from(sipmsg_find_header(msg, "From"));
1527         const gchar *callid = sipmsg_find_header(msg, "Call-ID");
1528         static struct sip_session *session;
1529         sipe_xml *xn_imdn;
1530         const sipe_xml *node;
1531         gchar *message_id;
1532         gchar *message;
1533
1534         session = sipe_session_find_chat_or_im(sipe_private, callid, with);
1535         if (!session) {
1536                 SIPE_DEBUG_INFO("sipe_process_imdn: unable to find conf session with callid=%s", callid);
1537                 g_free(with);
1538                 return;
1539         }
1540
1541         xn_imdn = sipe_xml_parse(msg->body, msg->bodylen);
1542         message_id = sipe_xml_data(sipe_xml_child(xn_imdn, "message-id"));
1543
1544         message = g_hash_table_lookup(session->conf_unconfirmed_messages, message_id);
1545
1546         /* recipient */
1547         for (node = sipe_xml_child(xn_imdn, "recipient"); node; node = sipe_xml_twin(node)) {
1548                 gchar *tmp = parse_from(sipe_xml_attribute(node, "uri"));
1549                 gchar *uri = parse_from(tmp);
1550                 gchar *status = sipe_xml_data(sipe_xml_child(node, "status"));
1551                 guint error = status ? g_ascii_strtoull(status, NULL, 10) : 0;
1552                 /* default to error if missing or conversion failed */
1553                 if ((error == 0) || (error >= 300))
1554                         sipe_user_present_message_undelivered(sipe_private,
1555                                                               session,
1556                                                               error,
1557                                                               -1,
1558                                                               uri,
1559                                                               message);
1560                 g_free(status);
1561                 g_free(tmp);
1562                 g_free(uri);
1563         }
1564
1565         sipe_xml_free(xn_imdn);
1566
1567         g_hash_table_remove(session->conf_unconfirmed_messages, message_id);
1568         SIPE_DEBUG_INFO("sipe_process_imdn: removed message %s from conf_unconfirmed_messages(count=%d)",
1569                         message_id, g_hash_table_size(session->conf_unconfirmed_messages));
1570         g_free(message_id);
1571         g_free(with);
1572 }
1573
1574 void sipe_core_conf_make_leader(struct sipe_core_public *sipe_public,
1575                                 gpointer parameter,
1576                                 const gchar *buddy_name)
1577 {
1578         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
1579         struct sipe_chat_session *chat_session = parameter;
1580         struct sip_session *session;
1581
1582         SIPE_DEBUG_INFO("sipe_core_conf_make_leader: chat_title=%s",
1583                         chat_session->title);
1584
1585         session = sipe_session_find_chat(sipe_private, chat_session);
1586         sipe_conf_modify_user_role(sipe_private, session, buddy_name);
1587 }
1588
1589 void sipe_core_conf_remove_from(struct sipe_core_public *sipe_public,
1590                                 gpointer parameter,
1591                                 const gchar *buddy_name)
1592 {
1593         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
1594         struct sipe_chat_session *chat_session = parameter;
1595         struct sip_session *session;
1596
1597         SIPE_DEBUG_INFO("sipe_core_conf_remove_from: chat_title=%s",
1598                         chat_session->title);
1599
1600         session = sipe_session_find_chat(sipe_private, chat_session);
1601         sipe_conf_delete_user(sipe_private, session, buddy_name);
1602 }
1603
1604 gchar *
1605 sipe_conf_build_uri(const gchar *focus_uri, const gchar *session_type)
1606 {
1607         gchar **parts = g_strsplit(focus_uri, ":focus:", 2);
1608         gchar *result = NULL;
1609
1610         if (g_strv_length(parts) == 2) {
1611                 result = g_strconcat(parts[0], ":", session_type, ":", parts[1],
1612                                      NULL);
1613         }
1614
1615         g_strfreev(parts);
1616         return result;
1617 }
1618
1619 static gchar *
1620 access_numbers_info(struct sipe_core_public *sipe_public)
1621 {
1622         GString *result = g_string_new("");
1623
1624 #if GLIB_CHECK_VERSION(2,16,0)
1625         GList *keys = g_hash_table_get_keys(SIPE_CORE_PRIVATE->access_numbers);
1626         keys = g_list_sort(keys, (GCompareFunc)g_strcmp0);
1627
1628         for (; keys; keys = g_list_delete_link(keys, keys)) {
1629                 gchar *value;
1630                 value = g_hash_table_lookup(SIPE_CORE_PRIVATE->access_numbers,
1631                                             keys->data);
1632
1633                 g_string_append(result, keys->data);
1634                 g_string_append(result, "&nbsp;&nbsp;&nbsp;&nbsp;");
1635                 g_string_append(result, value);
1636                 g_string_append(result, "<br/>");
1637         }
1638 #else
1639         (void)sipe_public; /* keep compiler happy */
1640 #endif
1641
1642         return g_string_free(result, FALSE);
1643 }
1644
1645 gchar *
1646 sipe_core_conf_entry_info(struct sipe_core_public *sipe_public,
1647                           struct sipe_chat_session *chat_session)
1648 {
1649         gchar *access_info = access_numbers_info(sipe_public);
1650         gchar *result = g_strdup_printf(
1651                         "<b><font size=\"+1\">%s</font></b><br/>"
1652                         "<b>%s:</b> %s<br/>"
1653                         "<b>%s:</b> %s<br/>"
1654                         "<br/>"
1655                         "<b>%s:</b><br/>"
1656                         "%s<br/>"
1657                         "<br/>"
1658                         "<b>%s:</b> %s<br/>"
1659                         "<br/>"
1660                         "<b><font size=\"+1\">%s</font></b><br/>"
1661                         "%s",
1662                         _("Dial-in info"),
1663                         _("Number"),
1664                         SIPE_CORE_PRIVATE->default_access_number ? SIPE_CORE_PRIVATE->default_access_number : "",
1665                         _("Conference ID"),
1666                         chat_session->dial_in_conf_id ? chat_session->dial_in_conf_id : "",
1667                         _("Meeting link"),
1668                         chat_session->join_url ? chat_session->join_url : "",
1669                         _("Organizer"),
1670                         chat_session->organizer ? chat_session->organizer : "",
1671                         _("Alternative dial-in numbers"),
1672                         access_info);
1673
1674         g_free(access_info);
1675
1676         return result;
1677 }
1678
1679 /*
1680   Local Variables:
1681   mode: c
1682   c-file-style: "bsd"
1683   indent-tabs-mode: t
1684   tab-width: 8
1685   End:
1686 */