src/core/sipe-conf.c

   1 /**
   2  * @file sipe-conf.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2010-2019 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-appshare.h"
  54 #include "sipe-dialog.h"
  55 #include "sipe-http.h"
  56 #include "sipe-im.h"
  57 #include "sipe-media.h"
  58 #include "sipe-nls.h"
  59 #include "sipe-session.h"
  60 #include "sipe-subscriptions.h"
  61 #include "sipe-user.h"
  62 #include "sipe-utils.h"
  63 #include "sipe-xml.h"
  64
  65 /**
  66  * Invite counterparty to join conference.
  67  * @param focus_uri (%s)
  68  * @param subject (%s) of conference
  69  */
  70 #define SIPE_SEND_CONF_INVITE \
  71 "<Conferencing version=\"2.0\">"\
  72         "<focus-uri>%s</focus-uri>"\
  73         "<subject>%s</subject>"\
  74         "<im available=\"true\">"\
  75                 "<first-im/>"\
  76         "</im>"\
  77 "</Conferencing>"
  78
  79 static gboolean
  80 sipe_conf_check_for_lync_url(struct sipe_core_private *sipe_private,
  81                              gchar *uri);
  82
  83 static struct transaction *
  84 cccp_request(struct sipe_core_private *sipe_private, const gchar *method,
  85              const gchar *with, struct sip_dialog *dialog,
  86              TransCallback callback, const gchar *body, ...)
  87 {
  88         gchar *headers;
  89         gchar *request;
  90         gchar *request_body;
  91
  92         gchar *self = sip_uri_self(sipe_private);
  93
  94         va_list args;
  95
  96         struct transaction *trans;
  97
  98         headers = g_strdup_printf(
  99                 "Supported: ms-sender\r\n"
 100                 "Contact: %s\r\n"
 101                 "Content-Type: application/cccp+xml\r\n",
 102                 sipe_private->contact);
 103
 104         /* TODO: put request_id to queue to further compare with incoming one */
 105         request = g_strdup_printf(
 106                 "<?xml version=\"1.0\"?>"
 107                 "<request xmlns=\"urn:ietf:params:xml:ns:cccp\" "
 108                 "xmlns:mscp=\"http://schemas.microsoft.com/rtc/2005/08/cccpextensions\" "
 109                         "C3PVersion=\"1\" "
 110                         "to=\"%s\" "
 111                         "from=\"%s\" "
 112                         "requestId=\"%d\">"
 113                         "%s"
 114                 "</request>",
 115                 with,
 116                 self,
 117                 sipe_private->cccp_request_id++,
 118                 body);
 119         g_free(self);
 120
 121         va_start(args, body);
 122         request_body = g_strdup_vprintf(request, args);
 123         va_end(args);
 124
 125         g_free(request);
 126
 127         trans = sip_transport_request(sipe_private,
 128                                       method,
 129                                       with,
 130                                       with,
 131                                       headers,
 132                                       request_body,
 133                                       dialog,
 134                                       callback);
 135
 136         g_free(headers);
 137         g_free(request_body);
 138
 139         return trans;
 140 }
 141
 142 static gboolean
 143 process_conf_get_capabilities(SIPE_UNUSED_PARAMETER struct sipe_core_private *sipe_private,
 144                               struct sipmsg *msg,
 145                               SIPE_UNUSED_PARAMETER struct transaction *trans)
 146 {
 147         if (msg->response >= 400) {
 148                 SIPE_DEBUG_INFO_NOFORMAT("process_conf_get_capabilities: "
 149                                 "getConferencingCapabilities failed.");
 150                 return FALSE;
 151         }
 152         if (msg->response == 200) {
 153                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 154                 const sipe_xml *node;
 155                 gchar *default_region;
 156
 157                 if (!sipe_strequal("success", sipe_xml_attribute(xn_response, "code"))) {
 158                         return TRUE;
 159                 }
 160
 161                 node = sipe_xml_child(xn_response, "getConferencingCapabilities/mcu-types/mcuType");
 162                 for (;node; node = sipe_xml_twin(node)) {
 163                         sipe_private->conf_mcu_types =
 164                                         g_slist_append(sipe_private->conf_mcu_types,
 165                                                        sipe_xml_data(node));
 166                 }
 167
 168                 g_hash_table_remove_all(sipe_private->access_numbers);
 169                 node = sipe_xml_child(xn_response, "getConferencingCapabilities/pstn-bridging/access-numbers/region");
 170                 for (;node; node = sipe_xml_twin(node)) {
 171                         gchar *name = g_strdup(sipe_xml_attribute(node, "name"));
 172                         gchar *number = sipe_xml_data(sipe_xml_child(node, "access-number/number"));
 173                         if (name && number) {
 174                                 g_hash_table_insert(sipe_private->access_numbers, name, number);
 175                         }
 176                 }
 177
 178                 node = sipe_xml_child(xn_response, "getConferencingCapabilities/pstn-bridging/access-numbers/default-region");
 179                 default_region = sipe_xml_data(node);
 180                 if (default_region) {
 181                         sipe_private->default_access_number =
 182                                         g_hash_table_lookup(sipe_private->access_numbers, default_region);
 183                 }
 184                 g_free(default_region);
 185
 186                 sipe_xml_free(xn_response);
 187         }
 188
 189         return TRUE;
 190 }
 191
 192 void
 193 sipe_conf_get_capabilities(struct sipe_core_private *sipe_private)
 194 {
 195         cccp_request(sipe_private, "SERVICE",
 196                      sipe_private->focus_factory_uri,
 197                      NULL,
 198                      process_conf_get_capabilities,
 199                      "<getConferencingCapabilities />");
 200 }
 201
 202 gboolean
 203 sipe_conf_supports_mcu_type(struct sipe_core_private *sipe_private,
 204                             const gchar *type)
 205 {
 206         return g_slist_find_custom(sipe_private->conf_mcu_types, type,
 207                                    (GCompareFunc)g_strcmp0) != NULL;
 208 }
 209
 210 /**
 211  * Generates random GUID.
 212  * This method is borrowed from pidgin's msnutils.c
 213  */
 214 static char *
 215 rand_guid()
 216 {
 217         return g_strdup_printf("%4X%4X-%4X-%4X-%4X-%4X%4X%4X",
 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                         rand() % 0xAAFF + 0x1111,
 225                         rand() % 0xAAFF + 0x1111);
 226 }
 227
 228 /** Invite us to the focus callback */
 229 static gboolean
 230 process_invite_conf_focus_response(struct sipe_core_private *sipe_private,
 231                                    struct sipmsg *msg,
 232                                    SIPE_UNUSED_PARAMETER struct transaction *trans)
 233 {
 234         struct sip_session *session = NULL;
 235         char *focus_uri = sipmsg_parse_to_address(msg);
 236
 237         session = sipe_session_find_conference(sipe_private, focus_uri);
 238
 239         if (!session) {
 240                 SIPE_DEBUG_INFO("process_invite_conf_focus_response: unable to find conf session with focus=%s", focus_uri);
 241                 g_free(focus_uri);
 242                 return FALSE;
 243         }
 244
 245         if (!session->focus_dialog) {
 246                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_conf_focus_response: session's focus_dialog is NULL");
 247                 g_free(focus_uri);
 248                 return FALSE;
 249         }
 250
 251         sipe_dialog_parse(session->focus_dialog, msg, TRUE);
 252
 253         if (msg->response >= 200) {
 254                 /* send ACK to focus */
 255                 session->focus_dialog->cseq = 0;
 256                 sip_transport_ack(sipe_private, session->focus_dialog);
 257                 session->focus_dialog->outgoing_invite = NULL;
 258                 session->focus_dialog->is_established = TRUE;
 259         }
 260
 261         if (msg->response >= 400) {
 262                 gchar *reason = sipmsg_get_ms_diagnostics_reason(msg);
 263
 264                 SIPE_DEBUG_INFO_NOFORMAT("process_invite_conf_focus_response: INVITE response is not 200. Failed to join focus.");
 265                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 266                                           _("Failed to join the conference"),
 267                                           reason ? reason : _("no reason given"));
 268                 g_free(reason);
 269
 270                 sipe_session_remove(sipe_private, session);
 271                 g_free(focus_uri);
 272                 return FALSE;
 273         } else if (msg->response == 200) {
 274                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 275                 const gchar *code = sipe_xml_attribute(xn_response, "code");
 276                 if (sipe_strequal(code, "success")) {
 277                         /* subscribe to focus */
 278                         sipe_subscribe_conference(sipe_private,
 279                                                   session->chat_session->id,
 280                                                   FALSE);
 281 #ifdef HAVE_VV
 282                         if (session->is_call)
 283                                 sipe_core_media_connect_conference(SIPE_CORE_PUBLIC,
 284                                                                    session->chat_session);
 285 #endif
 286                 }
 287                 sipe_xml_free(xn_response);
 288         }
 289
 290         g_free(focus_uri);
 291         return TRUE;
 292 }
 293
 294 static gchar *
 295 parse_ocs_focus_uri(const gchar *uri)
 296 {
 297         const gchar *confkey;
 298         size_t uri_len;
 299
 300         if (!uri)
 301                 return NULL;
 302
 303         // URI can have this prefix if it was typed in by the user
 304         if (g_str_has_prefix(uri, "meet:") || g_str_has_prefix(uri, "conf:")) {
 305                 uri += 5;
 306         }
 307
 308         uri_len = strlen(uri);
 309
 310         if (!uri || !g_str_has_prefix(uri, "sip:") ||
 311                 uri_len == 4 || g_strstr_len(uri, -1, "%")) {
 312                 return NULL;
 313         }
 314
 315         confkey = g_strstr_len(uri, -1, "?");
 316         if (confkey) {
 317                 /* TODO: Investigate how conf-key field should be used,
 318                  * ignoring for now */
 319                 uri_len = confkey - uri;
 320         }
 321
 322         return g_strndup(uri, uri_len);
 323 }
 324
 325 static gchar *
 326 extract_uri_from_html(const gchar *body,
 327                       const gchar *prefix,
 328                       guint prefix_skip_chars)
 329 {
 330         gchar *uri = NULL;
 331         const gchar *start = g_strstr_len(body, -1, prefix);
 332
 333         if (start) {
 334                 const gchar *end;
 335
 336                 start += prefix_skip_chars;
 337                 end = strchr(start, '"');
 338
 339                 if (end) {
 340                         gchar *html = g_strndup(start, end - start);
 341
 342                         /* decode HTML entities */
 343                         gchar *html_unescaped = sipe_backend_markup_strip_html(html);
 344                         g_free(html);
 345
 346                         if (!is_empty(html_unescaped)) {
 347                                 uri = sipe_utils_uri_unescape(html_unescaped);
 348                         }
 349
 350                         g_free(html_unescaped);
 351                 }
 352         }
 353
 354         return uri;
 355 }
 356
 357 static void sipe_conf_lync_url_cb(struct sipe_core_private *sipe_private,
 358                                   guint status,
 359                                   SIPE_UNUSED_PARAMETER GSList *headers,
 360                                   const gchar *body,
 361                                   gpointer callback_data)
 362 {
 363         gchar *uri = callback_data;
 364
 365         if (status != (guint) SIPE_HTTP_STATUS_ABORTED) {
 366                 gchar *focus_uri = NULL;
 367
 368                 if (body) {
 369                         /*
 370                          * Extract focus URI from HTML, e.g.
 371                          *
 372                          *  <a ... href="conf&#58;sip&#58;...ABCDEF&#37;3Frequired..." ... >
 373                          */
 374                         gchar *uri = extract_uri_from_html(body, "href=\"conf", 6);
 375                         focus_uri = parse_ocs_focus_uri(uri);
 376                         g_free(uri);
 377                 }
 378
 379                 if (focus_uri) {
 380                         SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: found focus URI"
 381                                         " '%s'", focus_uri);
 382
 383                         sipe_conf_create(sipe_private, NULL, focus_uri);
 384                         g_free(focus_uri);
 385                 } else {
 386                         /*
 387                          * If present, domainOwnerJoinLauncherUrl redirects to
 388                          * a page from where we still may extract the focus URI.
 389                          */
 390                         gchar *launcher_url = NULL;
 391                         static const gchar *launcher_url_prefix[] = {
 392                                 "var domainOwnerJoinLauncherUrl = \"",
 393                                 "sb-data-domainOwnerJoinLauncherUrl=\"",
 394                                 NULL
 395                         };
 396                         const gchar **p;
 397
 398                         SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: no focus URI "
 399                                         "found from URL '%s'", uri);
 400
 401                         for (p = launcher_url_prefix; !launcher_url && *p; ++p) {
 402                                 launcher_url = extract_uri_from_html(body,
 403                                                                      *p,
 404                                                                      strlen(*p));
 405                         }
 406
 407                         if (launcher_url &&
 408                             sipe_conf_check_for_lync_url(sipe_private, launcher_url)) {
 409                                 SIPE_DEBUG_INFO("sipe_conf_lync_url_cb: retrying with URL '%s'",
 410                                                 launcher_url);
 411                                 /* Ownership taken by sipe_conf_check_for_lync_url() */
 412                                 launcher_url = NULL;
 413                         } else {
 414                                 gchar *error;
 415
 416                                 error = g_strdup_printf(_("Can't find a conference URI on this page:\n\n%s"),
 417                                                         uri);
 418
 419                                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 420                                                           _("Failed to join the conference"),
 421                                                           error);
 422                                 g_free(error);
 423                         }
 424
 425                         g_free(launcher_url);
 426                 }
 427         }
 428
 429         g_free(uri);
 430 }
 431
 432 static gboolean sipe_conf_check_for_lync_url(struct sipe_core_private *sipe_private,
 433                                              gchar *uri)
 434 {
 435         struct sipe_http_request *request;
 436
 437         if (!(g_str_has_prefix(uri, "https://") ||
 438               g_str_has_prefix(uri, "http://")))
 439                 return(FALSE);
 440
 441         /* URL points to a HTML page with the conference focus URI */
 442         request = sipe_http_request_get(sipe_private,
 443                                         uri,
 444                                         NULL,
 445                                         sipe_conf_lync_url_cb,
 446                                         uri);
 447
 448         if (request) {
 449                 sipe_http_request_ready(request);
 450                 return(TRUE);
 451         }
 452
 453         return(FALSE);
 454 }
 455
 456 static void sipe_conf_uri_error(struct sipe_core_private *sipe_private,
 457                                 const gchar *uri)
 458 {
 459         gchar *error = g_strdup_printf(_("\"%s\" is not a valid conference URI"),
 460                                        uri ? uri : "");
 461         sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 462                                   _("Failed to join the conference"),
 463                                   error);
 464         g_free(error);
 465 }
 466
 467 void sipe_core_conf_create(struct sipe_core_public *sipe_public,
 468                            const gchar *uri,
 469                            const gchar *organizer,
 470                            const gchar *meeting_id)
 471 {
 472         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 473
 474         /* SIP URI or HTTP URL */
 475         if (uri) {
 476                 gchar *uri_ue = sipe_utils_uri_unescape(uri);
 477
 478                 SIPE_DEBUG_INFO("sipe_core_conf_create: URI '%s' unescaped '%s'",
 479                                 uri,
 480                                 uri_ue ? uri_ue : "<UNDEFINED>");
 481
 482                 /* takes ownership of "uri_ue" if successful */
 483                 if (!sipe_conf_check_for_lync_url(sipe_private, uri_ue)) {
 484                         gchar *focus_uri = parse_ocs_focus_uri(uri_ue);
 485
 486                         if (focus_uri) {
 487                                 sipe_conf_create(sipe_private, NULL, focus_uri);
 488                                 g_free(focus_uri);
 489                         } else
 490                                 sipe_conf_uri_error(sipe_private, uri);
 491
 492                         g_free(uri_ue);
 493                 }
 494
 495         /* Organizer email and meeting ID */
 496         } else if (organizer && meeting_id) {
 497                 gchar *tmp = g_strdup_printf("sip:%s;gruu;opaque=app:conf:focus:id:%s",
 498                                              organizer, meeting_id);
 499                 gchar *focus_uri = parse_ocs_focus_uri(tmp);
 500
 501                 SIPE_DEBUG_INFO("sipe_core_conf_create: organizer '%s' meeting ID '%s'",
 502                                 organizer,
 503                                 meeting_id);
 504
 505                 if (focus_uri) {
 506                         sipe_conf_create(sipe_private, NULL, focus_uri);
 507                         g_free(focus_uri);
 508                 } else
 509                         sipe_conf_uri_error(sipe_private, tmp);
 510                 g_free(tmp);
 511
 512         } else {
 513                 sipe_backend_notify_error(SIPE_CORE_PUBLIC,
 514                                           _("Failed to join the conference"),
 515                                           _("Incomplete conference information provided"));
 516         }
 517 }
 518
 519 /** Create new session with Focus URI */
 520 struct sip_session *
 521 sipe_conf_create(struct sipe_core_private *sipe_private,
 522                  struct sipe_chat_session *chat_session,
 523                  const gchar *focus_uri)
 524 {
 525         /* addUser request to the focus.
 526          *
 527          * focus_URI, from, endpoint_GUID
 528          */
 529         static const gchar CCCP_ADD_USER[] =
 530                 "<addUser>"
 531                         "<conferenceKeys confEntity=\"%s\"/>"
 532                         "<ci:user xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" entity=\"%s\">"
 533                                 "<ci:roles>"
 534                                         "<ci:entry>attendee</ci:entry>"
 535                                 "</ci:roles>"
 536                                 "<ci:endpoint entity=\"{%s}\" "
 537                                               "xmlns:msci=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\"/>"
 538                         "</ci:user>"
 539                 "</addUser>";
 540
 541         gchar *self;
 542         struct sip_session *session = sipe_session_add_chat(sipe_private,
 543                                                             chat_session,
 544                                                             FALSE,
 545                                                             focus_uri);
 546
 547         session->focus_dialog = g_new0(struct sip_dialog, 1);
 548         session->focus_dialog->callid = gencallid();
 549         session->focus_dialog->with = g_strdup(session->chat_session->id);
 550         session->focus_dialog->endpoint_GUID = rand_guid();
 551         session->focus_dialog->ourtag = gentag();
 552
 553         self = sip_uri_self(sipe_private);
 554         session->focus_dialog->outgoing_invite =
 555                 cccp_request(sipe_private, "INVITE",
 556                              session->focus_dialog->with, session->focus_dialog,
 557                              process_invite_conf_focus_response,
 558                              CCCP_ADD_USER,
 559                              session->focus_dialog->with, self,
 560                              session->focus_dialog->endpoint_GUID);
 561
 562         /* Rejoin existing session? */
 563         if (chat_session) {
 564                 SIPE_DEBUG_INFO("sipe_conf_create: rejoin '%s' (%s)",
 565                                 chat_session->title,
 566                                 chat_session->id);
 567                 sipe_backend_chat_rejoin(SIPE_CORE_PUBLIC,
 568                                          chat_session->backend,
 569                                          self,
 570                                          chat_session->title);
 571         }
 572         g_free(self);
 573
 574         return(session);
 575 }
 576
 577 /** Modify User Role */
 578 void
 579 sipe_conf_modify_user_role(struct sipe_core_private *sipe_private,
 580                            struct sip_session *session,
 581                            const gchar* who)
 582 {
 583         /* modifyUserRoles request to the focus. Makes user a leader.
 584          *
 585          * focus_uri (%s)
 586          * who (%s)
 587          */
 588         static const gchar CCCP_MODIFY_USER_ROLES[] =
 589                 "<modifyUserRoles>"
 590                         "<userKeys confEntity=\"%s\" userEntity=\"%s\"/>"
 591                         "<user-roles xmlns=\"urn:ietf:params:xml:ns:conference-info\">"
 592                                 "<entry>presenter</entry>"
 593                         "</user-roles>"
 594                 "</modifyUserRoles>";
 595
 596         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 597                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_modify_user_role: no dialog with focus, exiting.");
 598                 return;
 599         }
 600
 601         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 602                      session->focus_dialog, NULL,
 603                      CCCP_MODIFY_USER_ROLES,
 604                      session->focus_dialog->with, who);
 605 }
 606
 607 /**
 608  * Check conference lock status
 609  */
 610 sipe_chat_lock_status sipe_core_chat_lock_status(struct sipe_core_public *sipe_public,
 611                                                  struct sipe_chat_session *chat_session)
 612 {
 613         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 614         sipe_chat_lock_status status = SIPE_CHAT_LOCK_STATUS_NOT_ALLOWED;
 615
 616         if (chat_session &&
 617             (chat_session->type == SIPE_CHAT_TYPE_CONFERENCE)) {
 618                 struct sip_session *session = sipe_session_find_chat(sipe_private,
 619                                                                      chat_session);
 620                 if (session) {
 621                         gchar *self = sip_uri_self(sipe_private);
 622
 623                         /* Only operators are allowed to change the lock status */
 624                         if (sipe_backend_chat_is_operator(chat_session->backend, self)) {
 625                                 status = session->locked ?
 626                                         SIPE_CHAT_LOCK_STATUS_LOCKED :
 627                                         SIPE_CHAT_LOCK_STATUS_UNLOCKED;
 628                         }
 629
 630                         g_free(self);
 631                 }
 632         }
 633
 634         return(status);
 635 }
 636
 637 /**
 638  * Modify Conference Lock
 639  * Sends request to Focus.
 640  * INFO method is a carrier of application/cccp+xml
 641  */
 642 void
 643 sipe_core_chat_modify_lock(struct sipe_core_public *sipe_public,
 644                            struct sipe_chat_session *chat_session,
 645                            const gboolean locked)
 646 {
 647         /* modifyConferenceLock request to the focus. Locks/unlocks conference.
 648          *
 649          * focus_uri (%s)
 650          * locked (%s) "true" or "false" values applicable
 651          */
 652         static const gchar CCCP_MODIFY_CONFERENCE_LOCK[] =
 653                 "<modifyConferenceLock>"
 654                         "<conferenceKeys confEntity=\"%s\"/>"
 655                         "<locked>%s</locked>"
 656                 "</modifyConferenceLock>";
 657
 658         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 659
 660         struct sip_session *session = sipe_session_find_chat(sipe_private,
 661                                                              chat_session);
 662
 663         if (!session) return;
 664         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 665                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_modify_conference_lock: no dialog with focus, exiting.");
 666                 return;
 667         }
 668
 669         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 670                      session->focus_dialog, NULL,
 671                      CCCP_MODIFY_CONFERENCE_LOCK,
 672                      session->focus_dialog->with,
 673                      locked ? "true" : "false");
 674 }
 675
 676 /** Modify Delete User */
 677 void
 678 sipe_conf_delete_user(struct sipe_core_private *sipe_private,
 679                       struct sip_session *session,
 680                       const gchar* who)
 681 {
 682         /* deleteUser request to the focus. Removes a user from the conference.
 683          *
 684          * focus_uri (%s)
 685          * who (%s)
 686          */
 687         static const gchar CCCP_DELETE_USER[] =
 688                 "<deleteUser>"
 689                         "<userKeys confEntity=\"%s\" userEntity=\"%s\"/>"
 690                 "</deleteUser>";
 691
 692         if (!session->focus_dialog || !session->focus_dialog->is_established) {
 693                 SIPE_DEBUG_INFO_NOFORMAT("sipe_conf_delete_user: no dialog with focus, exiting.");
 694                 return;
 695         }
 696
 697         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 698                      session->focus_dialog, NULL,
 699                      CCCP_DELETE_USER,
 700                      session->focus_dialog->with, who);
 701 }
 702
 703 void
 704 sipe_conf_announce_audio_mute_state(struct sipe_core_private *sipe_private,
 705                                     struct sip_session *session,
 706                                     gboolean is_muted)
 707 {
 708         // See [MS-CONFAV] 3.2.5.4 and 4.3
 709         static const gchar CCCP_MODIFY_ENDPOINT_MEDIA[] =
 710                 "<modifyEndpointMedia mscp:mcuUri=\"%s\""
 711                 " xmlns:mscp=\"http://schemas.microsoft.com/rtc/2005/08/cccpextensions\">"
 712                         "<mediaKeys confEntity=\"%s\" userEntity=\"%s\""
 713                         " endpointEntity=\"%s\" mediaId=\"%d\"/>"
 714                         "<ci:media"
 715                         " xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" id=\"%d\">"
 716                                 "<ci:type>audio</ci:type>"
 717                                 "<ci:status>%s</ci:status>"
 718                                 "<media-ingress-filter"
 719                                 " xmlns=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\">"
 720                                         "%s"
 721                                 "</media-ingress-filter>"
 722                         "</ci:media>"
 723                 "</modifyEndpointMedia>";
 724
 725         gchar *mcu_uri = sipe_conf_build_uri(session->focus_dialog->with,
 726                                              "audio-video");
 727         gchar *self = sip_uri_self(sipe_private);
 728
 729         cccp_request(sipe_private, "INFO", session->focus_dialog->with,
 730                      session->focus_dialog, NULL,
 731                      CCCP_MODIFY_ENDPOINT_MEDIA,
 732                      mcu_uri, session->focus_dialog->with, self,
 733                      session->audio_video_entity,
 734                      session->audio_media_id, session->audio_media_id,
 735                      is_muted ? "recvonly" : "sendrecv",
 736                      is_muted ? "block" : "unblock");
 737
 738         g_free(mcu_uri);
 739         g_free(self);
 740 }
 741
 742 /** Invite counterparty to join conference callback */
 743 static gboolean
 744 process_invite_conf_response(struct sipe_core_private *sipe_private,
 745                              struct sipmsg *msg,
 746                              SIPE_UNUSED_PARAMETER struct transaction *trans)
 747 {
 748         struct sip_dialog *dialog = g_new0(struct sip_dialog, 1);
 749
 750         dialog->callid = g_strdup(sipmsg_find_call_id_header(msg));
 751         dialog->cseq = sipmsg_parse_cseq(msg);
 752         dialog->with = sipmsg_parse_to_address(msg);
 753         sipe_dialog_parse(dialog, msg, TRUE);
 754
 755         if (msg->response >= 200) {
 756                 /* send ACK to counterparty */
 757                 dialog->cseq--;
 758                 sip_transport_ack(sipe_private, dialog);
 759                 dialog->outgoing_invite = NULL;
 760                 dialog->is_established = TRUE;
 761         }
 762
 763         if (msg->response >= 400) {
 764                 SIPE_DEBUG_INFO("process_invite_conf_response: INVITE response is not 200. Failed to invite %s.", dialog->with);
 765                 /* @TODO notify user of failure to invite counterparty */
 766                 sipe_dialog_free(dialog);
 767                 return FALSE;
 768         }
 769
 770         if (msg->response >= 200) {
 771                 struct sip_session *session = sipe_session_find_im(sipe_private, dialog->with);
 772                 struct sip_dialog *im_dialog = sipe_dialog_find(session, dialog->with);
 773
 774                 /* close IM session to counterparty */
 775                 if (im_dialog) {
 776                         sip_transport_bye(sipe_private, im_dialog);
 777                         sipe_dialog_remove(session, dialog->with);
 778                 }
 779         }
 780
 781         sipe_dialog_free(dialog);
 782         return TRUE;
 783 }
 784
 785 /**
 786  * Invites counterparty to join conference.
 787  */
 788 void
 789 sipe_invite_conf(struct sipe_core_private *sipe_private,
 790                  struct sip_session *session,
 791                  const gchar* who)
 792 {
 793         gchar *hdr;
 794         gchar *contact;
 795         gchar *body;
 796         struct sip_dialog *dialog = NULL;
 797
 798         /* It will be short lived special dialog.
 799          * Will not be stored in session.
 800          */
 801         dialog = g_new0(struct sip_dialog, 1);
 802         dialog->callid = gencallid();
 803         dialog->with = g_strdup(who);
 804         dialog->ourtag = gentag();
 805
 806         contact = get_contact(sipe_private);
 807         hdr = g_strdup_printf(
 808                 "Supported: ms-sender\r\n"
 809                 "Contact: %s\r\n"
 810                 "Content-Type: application/ms-conf-invite+xml\r\n",
 811                 contact);
 812         g_free(contact);
 813
 814         body = g_strdup_printf(
 815                 SIPE_SEND_CONF_INVITE,
 816                 session->chat_session->id,
 817                 session->subject ? session->subject : ""
 818                 );
 819
 820         sip_transport_invite(sipe_private,
 821                              hdr,
 822                              body,
 823                              dialog,
 824                              process_invite_conf_response);
 825
 826         sipe_dialog_free(dialog);
 827         g_free(body);
 828         g_free(hdr);
 829 }
 830
 831 /** Create conference callback */
 832 static gboolean
 833 process_conf_add_response(struct sipe_core_private *sipe_private,
 834                           struct sipmsg *msg,
 835                           struct transaction *trans)
 836 {
 837         if (msg->response >= 400) {
 838                 SIPE_DEBUG_INFO_NOFORMAT("process_conf_add_response: SERVICE response is not 200. Failed to create conference.");
 839                 /* @TODO notify user of failure to create conference */
 840                 return FALSE;
 841         }
 842         if (msg->response == 200) {
 843                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
 844                 if (sipe_strequal("success", sipe_xml_attribute(xn_response, "code")))
 845                 {
 846                         gchar *who = trans->payload->data;
 847                         const sipe_xml *xn_conference_info = sipe_xml_child(xn_response, "addConference/conference-info");
 848                         struct sip_session *session = sipe_conf_create(sipe_private,
 849                                                                        NULL,
 850                                                                        sipe_xml_attribute(xn_conference_info,
 851                                                                                           "entity"));
 852
 853                         SIPE_DEBUG_INFO("process_conf_add_response: session->focus_uri=%s",
 854                                         session->chat_session->id);
 855
 856                         session->pending_invite_queue = sipe_utils_slist_insert_unique_sorted(session->pending_invite_queue,
 857                                                                                               g_strdup(who),
 858                                                                                               (GCompareFunc)strcmp,
 859                                                                                               g_free);
 860                 }
 861                 sipe_xml_free(xn_response);
 862         }
 863
 864         return TRUE;
 865 }
 866
 867 /**
 868  * Creates conference.
 869  */
 870 void
 871 sipe_conf_add(struct sipe_core_private *sipe_private,
 872               const gchar* who)
 873 {
 874         gchar *conference_id;
 875         struct transaction *trans;
 876         time_t expiry = time(NULL) + 7*60*60; /* 7 hours */
 877         char *expiry_time;
 878
 879         /* addConference request to the focus factory.
 880          *
 881          * conference_id        (%s) Ex.: 8386E6AEAAA41E4AA6627BA76D43B6D1
 882          * expiry_time          (%s) Ex.: 2009-07-13T17:57:09Z
 883          * conference_view      (%s) Ex.: <msci:entity-view entity="chat"/>
 884          */
 885         static const gchar CCCP_ADD_CONFERENCE[] =
 886                 "<addConference>"
 887                         "<ci:conference-info xmlns:ci=\"urn:ietf:params:xml:ns:conference-info\" "
 888                                              "entity=\"\" "
 889                                              "xmlns:msci=\"http://schemas.microsoft.com/rtc/2005/08/confinfoextensions\">"
 890                                 "<ci:conference-description>"
 891                                         "<ci:subject/>"
 892                                         "<msci:conference-id>%s</msci:conference-id>"
 893                                         "<msci:expiry-time>%s</msci:expiry-time>"
 894                                         "<msci:admission-policy>openAuthenticated</msci:admission-policy>"
 895                                 "</ci:conference-description>"
 896                                 "<msci:conference-view>%s</msci:conference-view>"
 897                         "</ci:conference-info>"
 898                 "</addConference>";
 899
 900         static const gchar *DESIRED_MCU_TYPES[] = {
 901                 "chat",
 902 #ifdef HAVE_VV
 903                 "audio-video",
 904 #endif
 905 #ifdef HAVE_APPSHARE
 906                 "applicationsharing",
 907 #endif
 908                 NULL
 909         };
 910
 911         GString *conference_view = g_string_new("");
 912         const gchar **type;
 913
 914         for (type = DESIRED_MCU_TYPES; *type; ++type ) {
 915                 if (sipe_conf_supports_mcu_type(sipe_private, *type)) {
 916                         g_string_append(conference_view, "<msci:entity-view entity=\"");
 917                         g_string_append(conference_view, *type);
 918                         g_string_append(conference_view, "\"/>");
 919                 }
 920         }
 921
 922         expiry_time = sipe_utils_time_to_str(expiry);
 923         conference_id = genconfid();
 924         trans = cccp_request(sipe_private, "SERVICE", sipe_private->focus_factory_uri,
 925                              NULL, process_conf_add_response,
 926                              CCCP_ADD_CONFERENCE,
 927                              conference_id, expiry_time, conference_view->str);
 928         g_free(conference_id);
 929         g_free(expiry_time);
 930         g_string_free(conference_view, TRUE);
 931
 932         if (trans) {
 933                 struct transaction_payload *payload = g_new0(struct transaction_payload, 1);
 934
 935                 payload->destroy = g_free;
 936                 payload->data = g_strdup(who);
 937                 trans->payload = payload;
 938         }
 939 }
 940
 941 static void
 942 accept_incoming_invite_conf(struct sipe_core_private *sipe_private,
 943                             gchar *focus_uri,
 944                             gboolean audio,
 945                             struct sipmsg *msg)
 946 {
 947         struct sip_session *session;
 948
 949         /* acknowledge invite */
 950         sipmsg_update_to_header_tag(msg);
 951         sip_transport_response(sipe_private, msg, 200, "OK", NULL);
 952
 953         /* add self to conf */
 954         session = sipe_conf_create(sipe_private, NULL, focus_uri);
 955         session->is_call = audio;
 956 }
 957
 958 struct conf_accept_ctx {
 959         gchar *focus_uri;
 960         struct sipmsg *msg;
 961         struct sipe_user_ask_ctx *ask_ctx;
 962
 963         SipeUserAskCb accept_cb;
 964         SipeUserAskCb decline_cb;
 965
 966         gpointer user_data;
 967 };
 968
 969 static void
 970 conf_accept_ctx_free(struct conf_accept_ctx *ctx)
 971 {
 972         g_return_if_fail(ctx != NULL);
 973
 974         sipmsg_free(ctx->msg);
 975         g_free(ctx->focus_uri);
 976         g_free(ctx);
 977 }
 978
 979 static void
 980 conf_accept_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
 981 {
 982         accept_incoming_invite_conf(sipe_private, ctx->focus_uri, TRUE, ctx->msg);
 983 }
 984
 985 static void
 986 conf_decline_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
 987 {
 988         sip_transport_response(sipe_private,
 989                                ctx->msg,
 990                                603, "Decline", NULL);
 991 }
 992
 993 void
 994 sipe_conf_cancel_unaccepted(struct sipe_core_private *sipe_private,
 995                             struct sipmsg *msg)
 996 {
 997         const gchar *callid1 = msg ? sipmsg_find_call_id_header(msg) : NULL;
 998         GSList *it = sipe_private->sessions_to_accept;
 999         while (it) {
1000                 struct conf_accept_ctx *ctx = it->data;
1001                 const gchar *callid2 = NULL;
1002
1003                 if (msg && ctx->msg)
1004                         callid2 = sipmsg_find_call_id_header(ctx->msg);
1005
1006                 if (sipe_strequal(callid1, callid2)) {
1007                         GSList *tmp;
1008
1009                         if (ctx->msg)
1010                                 sip_transport_response(sipe_private, ctx->msg,
1011                                                        487, "Request Terminated", NULL);
1012
1013                         if (msg)
1014                                 sip_transport_response(sipe_private, msg, 200, "OK", NULL);
1015
1016                         sipe_user_close_ask(ctx->ask_ctx);
1017                         conf_accept_ctx_free(ctx);
1018
1019                         tmp = it;
1020                         it = it->next;
1021
1022                         sipe_private->sessions_to_accept =
1023                                 g_slist_delete_link(sipe_private->sessions_to_accept, tmp);
1024
1025                         if (callid1)
1026                                 break;
1027                 } else
1028                         it = it->next;
1029         }
1030 }
1031
1032 static void
1033 accept_invitation_cb(struct sipe_core_private *sipe_private, gpointer data)
1034 {
1035         struct conf_accept_ctx *ctx = data;
1036
1037         sipe_private->sessions_to_accept =
1038                         g_slist_remove(sipe_private->sessions_to_accept, ctx);
1039
1040         if (ctx->accept_cb) {
1041                 ctx->accept_cb(sipe_private, ctx);
1042         }
1043
1044         conf_accept_ctx_free(ctx);
1045 }
1046
1047 static void
1048 decline_invitation_cb(struct sipe_core_private *sipe_private, gpointer data)
1049 {
1050         struct conf_accept_ctx *ctx = data;
1051
1052         sipe_private->sessions_to_accept =
1053                         g_slist_remove(sipe_private->sessions_to_accept, ctx);
1054
1055         if (ctx->decline_cb) {
1056                 ctx->decline_cb(sipe_private, ctx);
1057         }
1058
1059         conf_accept_ctx_free(ctx);
1060 }
1061
1062 static void
1063 ask_accept_invitation(struct sipe_core_private *sipe_private,
1064                       const gchar *focus_uri,
1065                       const gchar *question,
1066                       struct sipmsg *msg,
1067                       SipeUserAskCb accept_cb,
1068                       SipeUserAskCb decline_cb,
1069                       gpointer user_data)
1070 {
1071         gchar **parts;
1072         gchar *alias;
1073         gchar *question_str;
1074         struct conf_accept_ctx *ctx;
1075
1076         parts = g_strsplit(focus_uri, ";", 2);
1077         alias = sipe_buddy_get_alias(sipe_private, parts[0]);
1078
1079         question_str = g_strdup_printf("%s %s", alias ? alias : parts[0], question);
1080
1081         g_free(alias);
1082         g_strfreev(parts);
1083
1084         ctx = g_new0(struct conf_accept_ctx, 1);
1085         sipe_private->sessions_to_accept =
1086                         g_slist_append(sipe_private->sessions_to_accept, ctx);
1087
1088         ctx->focus_uri = g_strdup(focus_uri);
1089         ctx->msg = msg ? sipmsg_copy(msg) : NULL;
1090         ctx->accept_cb = accept_cb;
1091         ctx->decline_cb = decline_cb;
1092         ctx->user_data = user_data;
1093         ctx->ask_ctx = sipe_user_ask(sipe_private, question_str,
1094                                      _("Accept"), accept_invitation_cb,
1095                                      _("Decline"), decline_invitation_cb,
1096                                      ctx);
1097
1098         g_free(question_str);
1099 }
1100
1101 static void
1102 ask_accept_voice_conference(struct sipe_core_private *sipe_private,
1103                             const gchar *focus_uri,
1104                             struct sipmsg *msg,
1105                             SipeUserAskCb accept_cb,
1106                             SipeUserAskCb decline_cb)
1107 {
1108         gchar *question;
1109         const gchar *novv_note;
1110
1111 #ifdef HAVE_VV
1112         novv_note = "";
1113 #else
1114         novv_note = _("\n\nAs this client was not compiled with voice call "
1115                       "support, if you accept, you will be able to contact "
1116                       "the other participants only via IM session.");
1117 #endif
1118
1119         question = g_strdup_printf(_("wants to invite you "
1120                                      "to a conference call%s"), novv_note);
1121
1122         ask_accept_invitation(sipe_private, focus_uri, question, msg,
1123                               accept_cb, decline_cb, NULL);
1124
1125         g_free(question);
1126 }
1127
1128 void
1129 process_incoming_invite_conf(struct sipe_core_private *sipe_private,
1130                              struct sipmsg *msg)
1131 {
1132         sipe_xml *xn_conferencing = sipe_xml_parse(msg->body, msg->bodylen);
1133         const sipe_xml *xn_focus_uri = sipe_xml_child(xn_conferencing, "focus-uri");
1134         const sipe_xml *xn_audio = sipe_xml_child(xn_conferencing, "audio");
1135         gchar *focus_uri = sipe_xml_data(xn_focus_uri);
1136         gboolean audio = sipe_strequal(sipe_xml_attribute(xn_audio, "available"), "true");
1137
1138         sipe_xml_free(xn_conferencing);
1139
1140         SIPE_DEBUG_INFO("We have received invitation to Conference. Focus URI=%s", focus_uri);
1141
1142         if (audio) {
1143                 sip_transport_response(sipe_private, msg, 180, "Ringing", NULL);
1144                 ask_accept_voice_conference(sipe_private, focus_uri, msg,
1145                                             (SipeUserAskCb) conf_accept_cb,
1146                                             (SipeUserAskCb) conf_decline_cb);
1147
1148         } else {
1149                 accept_incoming_invite_conf(sipe_private, focus_uri, FALSE, msg);
1150         }
1151
1152         g_free(focus_uri);
1153 }
1154
1155 #ifdef HAVE_VV
1156
1157 static void
1158 process_conference_av_endpoint(const sipe_xml *endpoint,
1159                                const gchar *user_uri,
1160                                const gchar *self_uri,
1161                                struct sip_session *session)
1162 {
1163         const sipe_xml *media;
1164         const gchar *new_entity;
1165
1166         if (!sipe_strequal(user_uri, self_uri)) {
1167                 /* We are interested only in our own endpoint data. */
1168                 return;
1169         }
1170
1171         new_entity = sipe_xml_attribute(endpoint, "entity");
1172         if (!sipe_strequal(session->audio_video_entity, new_entity)) {
1173                 g_free(session->audio_video_entity);
1174                 session->audio_video_entity = g_strdup(new_entity);
1175         }
1176
1177         session->audio_media_id = 0;
1178
1179         media = sipe_xml_child(endpoint, "media");
1180         for (; media; media = sipe_xml_twin(media)) {
1181                 gchar *type = sipe_xml_data(sipe_xml_child(media, "type"));
1182
1183                 if (sipe_strequal(type, "audio")) {
1184                         session->audio_media_id =
1185                                         sipe_xml_int_attribute(media, "id", 0);
1186                 }
1187
1188                 g_free(type);
1189
1190                 if (session->audio_media_id != 0) {
1191                         break;
1192                 }
1193         }
1194 }
1195
1196 static void
1197 call_accept_cb(struct sipe_core_private *sipe_private, struct conf_accept_ctx *ctx)
1198 {
1199         struct sip_session *session;
1200         session = sipe_session_find_conference(sipe_private, ctx->focus_uri);
1201
1202         if (session) {
1203                 sipe_core_media_connect_conference(SIPE_CORE_PUBLIC,
1204                                                    session->chat_session);
1205         }
1206 }
1207
1208 #ifdef HAVE_APPSHARE
1209 sipe_appshare_role
1210 sipe_core_conf_get_appshare_role(struct sipe_core_public *sipe_public,
1211                                  struct sipe_chat_session *chat_session)
1212 {
1213         if (chat_session) {
1214                 gchar *mcu_uri;
1215                 struct sipe_media_call *call;
1216
1217                 mcu_uri = sipe_conf_build_uri(chat_session->id, "applicationsharing");
1218
1219                 call = sipe_media_call_find(SIPE_CORE_PRIVATE, mcu_uri);
1220
1221                 g_free(mcu_uri);
1222
1223                 if (call) {
1224                         return sipe_appshare_get_role(call);
1225                 }
1226         }
1227
1228         return SIPE_APPSHARE_ROLE_NONE;
1229 }
1230
1231 static gboolean
1232 process_conference_appshare_endpoint(const sipe_xml *endpoint)
1233 {
1234         gboolean presentation_added = FALSE;
1235         const sipe_xml *media;
1236
1237         for (media = sipe_xml_child(endpoint, "media");
1238              media && !presentation_added;
1239              media = sipe_xml_twin(media)) {
1240                 gchar *type;
1241                 gchar *media_state;
1242                 gchar *status;
1243
1244                 type = sipe_xml_data(sipe_xml_child(media, "type"));
1245                 media_state = sipe_xml_data(sipe_xml_child(media, "media-state"));
1246                 status = sipe_xml_data(sipe_xml_child(media, "status"));
1247
1248                 if (sipe_strequal(type, "applicationsharing") &&
1249                     sipe_strequal(media_state, "connected") &&
1250                     sipe_strequal(status, "sendonly")) {
1251                         presentation_added = TRUE;
1252                 }
1253
1254                 g_free(type);
1255                 g_free(media_state);
1256                 g_free(status);
1257         }
1258
1259         return(presentation_added);
1260 }
1261 #endif // HAVE_APPSHARE
1262 #endif // HAVE_VV
1263
1264 void
1265 sipe_process_conference(struct sipe_core_private *sipe_private,
1266                         struct sipmsg *msg)
1267 {
1268         sipe_xml *xn_conference_info;
1269         const sipe_xml *node;
1270         const sipe_xml *xn_subject;
1271         const gchar *focus_uri;
1272         struct sip_session *session;
1273         gboolean just_joined = FALSE;
1274 #ifdef HAVE_VV
1275         gboolean audio_was_added = FALSE;
1276 #ifdef HAVE_APPSHARE
1277         gboolean presentation_was_added = FALSE;
1278 #endif
1279 #endif // HAVE_VV
1280
1281         if (msg->response != 0 && msg->response != 200) return;
1282
1283         if (msg->bodylen == 0 || msg->body == NULL || !sipe_strequal(sipmsg_find_event_header(msg), "conference")) return;
1284
1285         xn_conference_info = sipe_xml_parse(msg->body, msg->bodylen);
1286         if (!xn_conference_info) return;
1287
1288         focus_uri = sipe_xml_attribute(xn_conference_info, "entity");
1289         session = sipe_session_find_conference(sipe_private, focus_uri);
1290
1291         if (!session) {
1292                 SIPE_DEBUG_INFO("sipe_process_conference: unable to find conf session with focus=%s", focus_uri);
1293                 return;
1294         }
1295
1296         if (!session->chat_session->backend) {
1297                 gchar *self = sip_uri_self(sipe_private);
1298
1299                 /* create chat */
1300                 session->chat_session->backend = sipe_backend_chat_create(SIPE_CORE_PUBLIC,
1301                                                                           session->chat_session,
1302                                                                           session->chat_session->title,
1303                                                                           self);
1304                 just_joined = TRUE;
1305                 /* @TODO ask for full state (re-subscribe) if it was a partial one -
1306                  * this is to obtain full list of conference participants.
1307                  */
1308                  g_free(self);
1309         }
1310
1311         /* subject */
1312         if ((xn_subject = sipe_xml_child(xn_conference_info, "conference-description/subject"))) {
1313                 g_free(session->subject);
1314                 session->subject = sipe_xml_data(xn_subject);
1315                 sipe_backend_chat_topic(session->chat_session->backend, session->subject);
1316                 SIPE_DEBUG_INFO("sipe_process_conference: subject=%s", session->subject ? session->subject : "");
1317         }
1318
1319         /* IM MCU URI */
1320         if (!session->im_mcu_uri) {
1321                 for (node = sipe_xml_child(xn_conference_info, "conference-description/conf-uris/entry");
1322                      node;
1323                      node = sipe_xml_twin(node))
1324                 {
1325                         gchar *purpose = sipe_xml_data(sipe_xml_child(node, "purpose"));
1326
1327                         if (sipe_strequal("chat", purpose)) {
1328                                 g_free(purpose);
1329                                 session->im_mcu_uri = sipe_xml_data(sipe_xml_child(node, "uri"));
1330                                 SIPE_DEBUG_INFO("sipe_process_conference: im_mcu_uri=%s", session->im_mcu_uri);
1331                                 break;
1332                         }
1333                         g_free(purpose);
1334                 }
1335         }
1336
1337         /* organizer */
1338         if (!session->chat_session->organizer) {
1339                 node = sipe_xml_child(xn_conference_info, "conference-description/organizer/display-name");
1340                 if (node) {
1341                         session->chat_session->organizer = sipe_xml_data(node);
1342                 }
1343         }
1344
1345         /* join URL */
1346         if (!session->chat_session->join_url) {
1347                 node = sipe_xml_child(xn_conference_info, "conference-description/join-url");
1348                 if (node) {
1349                         session->chat_session->join_url = sipe_xml_data(node);
1350                 }
1351         }
1352
1353         /* dial-in conference id */
1354         if (!session->chat_session->dial_in_conf_id) {
1355                 node = sipe_xml_child(xn_conference_info, "conference-description/pstn-access/id");
1356                 if (node) {
1357                         session->chat_session->dial_in_conf_id = sipe_xml_data(node);
1358                 }
1359         }
1360
1361         /* users */
1362         for (node = sipe_xml_child(xn_conference_info, "users/user"); node; node = sipe_xml_twin(node)) {
1363                 const gchar *user_uri = sipe_xml_attribute(node, "entity");
1364                 const gchar *state = sipe_xml_attribute(node, "state");
1365                 gchar *role = sipe_xml_data(sipe_xml_child(node, "roles/entry"));
1366                 gboolean is_operator = sipe_strequal(role, "presenter");
1367                 gboolean is_in_im_mcu = FALSE;
1368                 gchar *self = sip_uri_self(sipe_private);
1369
1370                 if (sipe_strequal("deleted", state)) {
1371                         if (sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1372                                 sipe_backend_chat_remove(session->chat_session->backend,
1373                                                          user_uri);
1374                         }
1375                 } else {
1376                         /* endpoints */
1377                         const sipe_xml *endpoint;
1378                         for (endpoint = sipe_xml_child(node, "endpoint"); endpoint; endpoint = sipe_xml_twin(endpoint)) {
1379                                 const gchar *session_type;
1380                                 gchar *status = sipe_xml_data(sipe_xml_child(endpoint, "status"));
1381                                 gboolean connected = sipe_strequal("connected", status);
1382                                 g_free(status);
1383
1384                                 if (!connected)
1385                                         continue;
1386
1387                                 session_type = sipe_xml_attribute(endpoint, "session-type");
1388
1389                                 if (sipe_strequal("chat", session_type)) {
1390                                         is_in_im_mcu = TRUE;
1391                                         if (!sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1392                                                 sipe_backend_chat_add(session->chat_session->backend,
1393                                                                       user_uri,
1394                                                                       !just_joined && g_ascii_strcasecmp(user_uri, self));
1395                                         }
1396                                         if (is_operator) {
1397                                                 sipe_backend_chat_operator(session->chat_session->backend,
1398                                                                            user_uri);
1399                                         }
1400                                 } else if (sipe_strequal("audio-video", session_type)) {
1401 #ifdef HAVE_VV
1402                                         if (!session->is_call)
1403                                                 audio_was_added = TRUE;
1404                                         process_conference_av_endpoint(endpoint,
1405                                                                        user_uri,
1406                                                                        self,
1407                                                                        session);
1408 #endif
1409                                 } else if (sipe_strequal("applicationsharing", session_type)) {
1410 #ifdef HAVE_APPSHARE
1411                                         if (sipe_core_conf_get_appshare_role(SIPE_CORE_PUBLIC,
1412                                                                              session->chat_session) == SIPE_APPSHARE_ROLE_NONE &&
1413                                             !sipe_strequal(user_uri, self)) {
1414                                                 presentation_was_added = process_conference_appshare_endpoint(endpoint);
1415                                         }
1416 #endif
1417                                 }
1418                         }
1419                         if (!is_in_im_mcu) {
1420                                 if (sipe_backend_chat_find(session->chat_session->backend, user_uri)) {
1421                                         sipe_backend_chat_remove(session->chat_session->backend,
1422                                                                  user_uri);
1423                                 }
1424                         }
1425                 }
1426                 g_free(role);
1427                 g_free(self);
1428         }
1429
1430 #ifdef HAVE_VV
1431         if (audio_was_added) {
1432                 session->is_call = TRUE;
1433                 ask_accept_voice_conference(sipe_private, focus_uri, NULL,
1434                                             (SipeUserAskCb) call_accept_cb,
1435                                             NULL);
1436         }
1437 #ifdef HAVE_APPSHARE
1438         if (presentation_was_added) {
1439                 sipe_core_appshare_connect_conference(SIPE_CORE_PUBLIC,
1440                                                       session->chat_session,
1441                                                       TRUE);
1442         }
1443 #endif
1444 #endif // HAVE_VV
1445
1446         /* entity-view, locked */
1447         for (node = sipe_xml_child(xn_conference_info, "conference-view/entity-view");
1448              node;
1449              node = sipe_xml_twin(node)) {
1450
1451                 const sipe_xml *xn_type = sipe_xml_child(node, "entity-state/media/entry/type");
1452                 gchar *tmp = NULL;
1453                 if (xn_type && sipe_strequal("chat", (tmp = sipe_xml_data(xn_type)))) {
1454                         const sipe_xml *xn_locked = sipe_xml_child(node, "entity-state/locked");
1455                         if (xn_locked) {
1456                                 gchar *locked = sipe_xml_data(xn_locked);
1457                                 gboolean prev_locked = session->locked;
1458                                 session->locked = sipe_strequal(locked, "true");
1459                                 if (prev_locked && !session->locked) {
1460                                         sipe_user_present_info(sipe_private, session,
1461                                                                _("This conference is no longer locked. Additional participants can now join."));
1462                                 }
1463                                 if (!prev_locked && session->locked) {
1464                                         sipe_user_present_info(sipe_private, session,
1465                                                                _("This conference is locked. Nobody else can join the conference while it is locked."));
1466                                 }
1467
1468                                 SIPE_DEBUG_INFO("sipe_process_conference: session->locked=%s",
1469                                                 session->locked ? "TRUE" : "FALSE");
1470                                 g_free(locked);
1471                         }
1472                 }
1473                 g_free(tmp);
1474         }
1475         sipe_xml_free(xn_conference_info);
1476
1477         if (session->im_mcu_uri) {
1478                 struct sip_dialog *dialog = sipe_dialog_find(session, session->im_mcu_uri);
1479                 if (!dialog) {
1480                         dialog = sipe_dialog_add(session);
1481
1482                         dialog->callid = g_strdup(session->callid);
1483                         dialog->with = g_strdup(session->im_mcu_uri);
1484
1485                         /* send INVITE to IM MCU */
1486                         sipe_im_invite(sipe_private, session, dialog->with, NULL, NULL, NULL, FALSE);
1487                 }
1488         }
1489
1490         sipe_process_pending_invite_queue(sipe_private, session);
1491 }
1492
1493 void
1494 sipe_conf_immcu_closed(struct sipe_core_private *sipe_private,
1495                        struct sip_session *session)
1496 {
1497         sipe_user_present_info(sipe_private, session,
1498                                _("You have been disconnected from this conference."));
1499         sipe_backend_chat_close(session->chat_session->backend);
1500 }
1501
1502 void
1503 conf_session_close(struct sipe_core_private *sipe_private,
1504                    struct sip_session *session)
1505 {
1506         if (session) {
1507                 /* unsubscribe from focus */
1508                 sipe_subscribe_conference(sipe_private,
1509                                           session->chat_session->id, TRUE);
1510
1511                 if (session->focus_dialog) {
1512                         /* send BYE to focus */
1513                         sip_transport_bye(sipe_private, session->focus_dialog);
1514                 }
1515         }
1516 }
1517
1518 void
1519 sipe_process_imdn(struct sipe_core_private *sipe_private,
1520                   struct sipmsg *msg)
1521 {
1522         gchar *with = sipmsg_parse_from_address(msg);
1523         const gchar *callid = sipmsg_find_call_id_header(msg);
1524         static struct sip_session *session;
1525         sipe_xml *xn_imdn;
1526         const sipe_xml *node;
1527         gchar *message_id;
1528         gchar *message;
1529
1530         session = sipe_session_find_chat_or_im(sipe_private, callid, with);
1531         if (!session) {
1532                 SIPE_DEBUG_INFO("sipe_process_imdn: unable to find conf session with callid=%s", callid);
1533                 g_free(with);
1534                 return;
1535         }
1536
1537         xn_imdn = sipe_xml_parse(msg->body, msg->bodylen);
1538         message_id = sipe_xml_data(sipe_xml_child(xn_imdn, "message-id"));
1539
1540         message = g_hash_table_lookup(session->conf_unconfirmed_messages, message_id);
1541
1542         /* recipient */
1543         for (node = sipe_xml_child(xn_imdn, "recipient"); node; node = sipe_xml_twin(node)) {
1544                 gchar *tmp = parse_from(sipe_xml_attribute(node, "uri"));
1545                 gchar *uri = parse_from(tmp);
1546                 gchar *status = sipe_xml_data(sipe_xml_child(node, "status"));
1547                 guint error = status ? g_ascii_strtoull(status, NULL, 10) : 0;
1548                 /* default to error if missing or conversion failed */
1549                 if ((error == 0) || (error >= 300))
1550                         sipe_user_present_message_undelivered(sipe_private,
1551                                                               session,
1552                                                               error,
1553                                                               -1,
1554                                                               uri,
1555                                                               message);
1556                 g_free(status);
1557                 g_free(tmp);
1558                 g_free(uri);
1559         }
1560
1561         sipe_xml_free(xn_imdn);
1562
1563         g_hash_table_remove(session->conf_unconfirmed_messages, message_id);
1564         SIPE_DEBUG_INFO("sipe_process_imdn: removed message %s from conf_unconfirmed_messages(count=%d)",
1565                         message_id, g_hash_table_size(session->conf_unconfirmed_messages));
1566         g_free(message_id);
1567         g_free(with);
1568 }
1569
1570 void sipe_core_conf_make_leader(struct sipe_core_public *sipe_public,
1571                                 gpointer parameter,
1572                                 const gchar *buddy_name)
1573 {
1574         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
1575         struct sipe_chat_session *chat_session = parameter;
1576         struct sip_session *session;
1577
1578         SIPE_DEBUG_INFO("sipe_core_conf_make_leader: chat_title=%s",
1579                         chat_session->title);
1580
1581         session = sipe_session_find_chat(sipe_private, chat_session);
1582         sipe_conf_modify_user_role(sipe_private, session, buddy_name);
1583 }
1584
1585 void sipe_core_conf_remove_from(struct sipe_core_public *sipe_public,
1586                                 gpointer parameter,
1587                                 const gchar *buddy_name)
1588 {
1589         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
1590         struct sipe_chat_session *chat_session = parameter;
1591         struct sip_session *session;
1592
1593         SIPE_DEBUG_INFO("sipe_core_conf_remove_from: chat_title=%s",
1594                         chat_session->title);
1595
1596         session = sipe_session_find_chat(sipe_private, chat_session);
1597         sipe_conf_delete_user(sipe_private, session, buddy_name);
1598 }
1599
1600 gchar *
1601 sipe_conf_build_uri(const gchar *focus_uri, const gchar *session_type)
1602 {
1603         gchar **parts = g_strsplit(focus_uri, ":focus:", 2);
1604         gchar *result = NULL;
1605
1606         if (g_strv_length(parts) == 2) {
1607                 result = g_strconcat(parts[0], ":", session_type, ":", parts[1],
1608                                      NULL);
1609         }
1610
1611         g_strfreev(parts);
1612         return result;
1613 }
1614
1615 static gchar *
1616 access_numbers_info(struct sipe_core_public *sipe_public)
1617 {
1618         GString *result = g_string_new("");
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
1633         return g_string_free(result, FALSE);
1634 }
1635
1636 gchar *
1637 sipe_core_conf_entry_info(struct sipe_core_public *sipe_public,
1638                           struct sipe_chat_session *chat_session)
1639 {
1640         gchar *access_info = access_numbers_info(sipe_public);
1641         gchar *result = g_strdup_printf(
1642                         "<b><font size=\"+1\">%s</font></b><br/>"
1643                         "<b>%s:</b> %s<br/>"
1644                         "<b>%s:</b> %s<br/>"
1645                         "<br/>"
1646                         "<b>%s:</b><br/>"
1647                         "%s<br/>"
1648                         "<br/>"
1649                         "<b>%s:</b> %s<br/>"
1650                         "<br/>"
1651                         "<b><font size=\"+1\">%s</font></b><br/>"
1652                         "%s",
1653                         _("Dial-in info"),
1654                         _("Number"),
1655                         SIPE_CORE_PRIVATE->default_access_number ? SIPE_CORE_PRIVATE->default_access_number : "",
1656                         _("Conference ID"),
1657                         chat_session->dial_in_conf_id ? chat_session->dial_in_conf_id : "",
1658                         _("Meeting link"),
1659                         chat_session->join_url ? chat_session->join_url : "",
1660                         _("Organizer"),
1661                         chat_session->organizer ? chat_session->organizer : "",
1662                         _("Alternative dial-in numbers"),
1663                         access_info);
1664
1665         g_free(access_info);
1666
1667         return result;
1668 }
1669
1670 /*
1671   Local Variables:
1672   mode: c
1673   c-file-style: "bsd"
1674   indent-tabs-mode: t
1675   tab-width: 8
1676   End:
1677 */