res/res_features.c

   1 /*
   2  * Asterisk -- A telephony toolkit for Linux.
   3  *
   4  * Routines implementing call parking
   5  *
   6  * Copyright (C) 1999, Mark Spencer
   7  *
   8  * Mark Spencer <markster@linux-support.net>
   9  *
  10  * This program is free software, distributed under the terms of
  11  * the GNU General Public License
  12  */
  13
  14 #include <asterisk/lock.h>
  15 #include <asterisk/file.h>
  16 #include <asterisk/logger.h>
  17 #include <asterisk/channel.h>
  18 #include <asterisk/pbx.h>
  19 #include <asterisk/options.h>
  20 #include <asterisk/module.h>
  21 #include <asterisk/translate.h>
  22 #include <asterisk/say.h>
  23 #include <asterisk/channel_pvt.h>
  24 #include <asterisk/features.h>
  25 #include <asterisk/musiconhold.h>
  26 #include <asterisk/config.h>
  27 #include <asterisk/cli.h>
  28 #include <asterisk/manager.h>
  29 #include <asterisk/utils.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <unistd.h>
  33 #include <string.h>
  34 #include <stdlib.h>
  35 #include <stdio.h>
  36 #include <sys/time.h>
  37 #include <sys/signal.h>
  38 #include <netinet/in.h>
  39
  40 #define DEFAULT_PARK_TIME 45000
  41
  42 static char *parkedcall = "ParkedCall";
  43
  44 /* No more than 45 seconds parked before you do something with them */
  45 static int parkingtime = DEFAULT_PARK_TIME;
  46
  47 /* Context for which parking is made accessible */
  48 static char parking_con[AST_MAX_EXTENSION] = "parkedcalls";
  49
  50 /* Extension you type to park the call */
  51 static char parking_ext[AST_MAX_EXTENSION] = "700";
  52
  53 static char pickup_ext[AST_MAX_EXTENSION] = "*8";
  54
  55 /* First available extension for parking */
  56 static int parking_start = 701;
  57
  58 /* Last available extension for parking */
  59 static int parking_stop = 750;
  60
  61 /* Registrar for operations */
  62 static char *registrar = "res_parking";
  63
  64 static char *synopsis = "Answer a parked call";
  65
  66 static char *descrip = "ParkedCall(exten):"
  67 "Used to connect to a parked call.  This Application is always\n"
  68 "registered internally and does not need to be explicitly added\n"
  69 "into the dialplan, although you should include the 'parkedcalls'\n"
  70 "context.\n";
  71
  72 struct parkeduser {
  73         struct ast_channel *chan;
  74         struct timeval start;
  75         int parkingnum;
  76         /* Where to go if our parking time expires */
  77         char context[AST_MAX_EXTENSION];
  78         char exten[AST_MAX_EXTENSION];
  79         int priority;
  80         int parkingtime;
  81         struct parkeduser *next;
  82 };
  83
  84 static struct parkeduser *parkinglot;
  85
  86 AST_MUTEX_DEFINE_STATIC(parking_lock);
  87
  88 static pthread_t parking_thread;
  89
  90 STANDARD_LOCAL_USER;
  91
  92 LOCAL_USER_DECL;
  93
  94 char *ast_parking_ext(void)
  95 {
  96         return parking_ext;
  97 }
  98
  99 char *ast_pickup_ext(void)
 100 {
 101         return pickup_ext;
 102 }
 103
 104 int ast_park_call(struct ast_channel *chan, struct ast_channel *peer, int timeout, int *extout)
 105 {
 106         /* We put the user in the parking list, then wake up the parking thread to be sure it looks
 107            after these channels too */
 108         struct parkeduser *pu, *cur;
 109         int x;
 110         pu = malloc(sizeof(struct parkeduser));
 111         if (pu) {
 112                 ast_mutex_lock(&parking_lock);
 113                 for (x=parking_start;x<=parking_stop;x++) {
 114                         cur = parkinglot;
 115                         while(cur) {
 116                                 if (cur->parkingnum == x)
 117                                         break;
 118                                 cur = cur->next;
 119                         }
 120                         if (!cur)
 121                                 break;
 122                 }
 123                 if (x <= parking_stop) {
 124                         chan->appl = "Parked Call";
 125                         chan->data = NULL;
 126
 127                         pu->chan = chan;
 128                         /* Start music on hold */
 129                         ast_moh_start(pu->chan, NULL);
 130                         gettimeofday(&pu->start, NULL);
 131                         pu->parkingnum = x;
 132                         if (timeout > 0)
 133                                 pu->parkingtime = timeout;
 134                         else
 135                                 pu->parkingtime = parkingtime;
 136                         if (extout)
 137                                 *extout = x;
 138                         /* Remember what had been dialed, so that if the parking
 139                            expires, we try to come back to the same place */
 140                         if (strlen(chan->macrocontext))
 141                                 strncpy(pu->context, chan->macrocontext, sizeof(pu->context)-1);
 142                         else
 143                                 strncpy(pu->context, chan->context, sizeof(pu->context)-1);
 144                         if (strlen(chan->macroexten))
 145                                 strncpy(pu->exten, chan->macroexten, sizeof(pu->exten)-1);
 146                         else
 147                                 strncpy(pu->exten, chan->exten, sizeof(pu->exten)-1);
 148                         if (chan->macropriority)
 149                                 pu->priority = chan->macropriority;
 150                         else
 151                                 pu->priority = chan->priority;
 152                         pu->next = parkinglot;
 153                         parkinglot = pu;
 154                         ast_mutex_unlock(&parking_lock);
 155                         /* Wake up the (presumably select()ing) thread */
 156                         pthread_kill(parking_thread, SIGURG);
 157                         if (option_verbose > 1)
 158                                 ast_verbose(VERBOSE_PREFIX_2 "Parked %s on %d\n", pu->chan->name, pu->parkingnum);
 159
 160                         manager_event(EVENT_FLAG_CALL, "ParkedCall",
 161                                 "Exten: %d\r\n"
 162                                 "Channel: %s\r\n"
 163                                 "From: %s\r\n"
 164                                 "Timeout: %ld\r\n"
 165                                 "CallerID: %s\r\n"
 166                                 ,pu->parkingnum, pu->chan->name, peer->name
 167                                 ,(long)pu->start.tv_sec + (long)(pu->parkingtime/1000) - (long)time(NULL)
 168                                 ,(pu->chan->callerid ? pu->chan->callerid : "")
 169                                 );
 170
 171                         if (peer)
 172                                 ast_say_digits(peer, pu->parkingnum, "", peer->language);
 173                         return 0;
 174                 } else {
 175                         ast_log(LOG_WARNING, "No more parking spaces\n");
 176                         free(pu);
 177                         ast_mutex_unlock(&parking_lock);
 178                         return -1;
 179                 }
 180         } else {
 181                 ast_log(LOG_WARNING, "Out of memory\n");
 182                 return -1;
 183         }
 184         return 0;
 185 }
 186
 187 int ast_masq_park_call(struct ast_channel *rchan, struct ast_channel *peer, int timeout, int *extout)
 188 {
 189         struct ast_channel *chan;
 190         struct ast_frame *f;
 191         /* Make a new, fake channel that we'll use to masquerade in the real one */
 192         chan = ast_channel_alloc(0);
 193         if (chan) {
 194                 /* Let us keep track of the channel name */
 195                 snprintf(chan->name, sizeof (chan->name), "Parked/%s",rchan->name);
 196                 /* Make formats okay */
 197                 chan->readformat = rchan->readformat;
 198                 chan->writeformat = rchan->writeformat;
 199                 ast_channel_masquerade(chan, rchan);
 200                 /* Setup the extensions and such */
 201                 strncpy(chan->context, rchan->context, sizeof(chan->context) - 1);
 202                 strncpy(chan->exten, rchan->exten, sizeof(chan->exten) - 1);
 203                 chan->priority = rchan->priority;
 204                 /* Make the masq execute */
 205                 f = ast_read(chan);
 206                 if (f)
 207                         ast_frfree(f);
 208                 ast_park_call(chan, peer, timeout, extout);
 209         } else {
 210                 ast_log(LOG_WARNING, "Unable to create parked channel\n");
 211                 return -1;
 212         }
 213         return 0;
 214 }
 215
 216 int ast_bridge_call(struct ast_channel *chan,struct ast_channel *peer,struct ast_bridge_config *config)
 217 {
 218         /* Copy voice back and forth between the two channels.  Give the peer
 219            the ability to transfer calls with '#<extension' syntax. */
 220         int len;
 221         struct ast_frame *f;
 222         struct ast_channel *who;
 223         char newext[256], *ptr;
 224         int res;
 225         struct ast_option_header *aoh;
 226         struct ast_channel *transferer;
 227         struct ast_channel *transferee;
 228         char *transferer_real_context;
 229         int allowdisconnect,allowredirect_in,allowredirect_out;
 230
 231         allowdisconnect = config->allowdisconnect;
 232         allowredirect_in = config->allowredirect_in;
 233         allowredirect_out = config->allowredirect_out;
 234
 235         /* Answer if need be */
 236         if (ast_answer(chan))
 237                 return -1;
 238         peer->appl = "Bridged Call";
 239         peer->data = chan->name;
 240         /* copy the userfield from the B-leg to A-leg if applicable */
 241         if (chan->cdr && peer->cdr && strlen(peer->cdr->userfield)) {
 242                 char tmp[256];
 243                 if (strlen(chan->cdr->userfield)) {
 244                         snprintf(tmp, sizeof(tmp), "%s;%s",chan->cdr->userfield, peer->cdr->userfield);
 245                         ast_cdr_appenduserfield(chan, tmp);
 246                 } else
 247                         ast_cdr_setuserfield(chan, peer->cdr->userfield);
 248                 /* free the peer's cdr without ast_cdr_free complaining */
 249                 free(peer->cdr);
 250                 peer->cdr = NULL;
 251         }
 252         for (;;) {
 253           res = ast_channel_bridge(chan,peer,config,&f, &who);
 254                 if (res < 0) {
 255                         ast_log(LOG_WARNING, "Bridge failed on channels %s and %s\n", chan->name, peer->name);
 256                         return -1;
 257                 }
 258
 259                 if (!f || ((f->frametype == AST_FRAME_CONTROL) && ((f->subclass == AST_CONTROL_HANGUP) || (f->subclass == AST_CONTROL_BUSY) ||
 260                         (f->subclass == AST_CONTROL_CONGESTION)))) {
 261                                 res = -1;
 262                                 break;
 263                 }
 264                 if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RINGING)) {
 265                         if (who == chan)
 266                                 ast_indicate(peer, AST_CONTROL_RINGING);
 267                         else
 268                                 ast_indicate(chan, AST_CONTROL_RINGING);
 269                 }
 270                 if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == -1)) {
 271                         if (who == chan)
 272                                 ast_indicate(peer, -1);
 273                         else
 274                                 ast_indicate(chan, -1);
 275                 }
 276                 if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_OPTION)) {
 277                         aoh = f->data;
 278                         /* Forward option Requests */
 279                         if (aoh && (aoh->flag == AST_OPTION_FLAG_REQUEST)) {
 280                                 if (who == chan)
 281                                         ast_channel_setoption(peer, ntohs(aoh->option), aoh->data, f->datalen - sizeof(struct ast_option_header), 0);
 282                                 else
 283                                         ast_channel_setoption(chan, ntohs(aoh->option), aoh->data, f->datalen - sizeof(struct ast_option_header), 0);
 284                         }
 285                 }
 286             if (f && (f->frametype == AST_FRAME_DTMF) && (who == chan) && allowdisconnect &&
 287                      (f->subclass == '*')) {
 288                 if (option_verbose > 3)
 289                         ast_verbose(VERBOSE_PREFIX_3 "User hit %c to disconnect call.\n", f->subclass);
 290                         res = -1;
 291                         break;
 292
 293                         }
 294
 295                 if ((f->frametype == AST_FRAME_DTMF) &&
 296                         ((allowredirect_in && who == peer) || (allowredirect_out && who == chan)) &&
 297                         (f->subclass == '#')) {
 298                                 if(allowredirect_in &&  who == peer) {
 299                                         transferer = peer;
 300                                         transferee = chan;
 301                                 }
 302                                 else {
 303                                         transferer = chan;
 304                                         transferee = peer;
 305                                 }
 306                                 if(!(transferer_real_context=pbx_builtin_getvar_helper(transferee, "TRANSFER_CONTEXT")) &&
 307                                    !(transferer_real_context=pbx_builtin_getvar_helper(transferer, "TRANSFER_CONTEXT"))) {
 308                                         /* Use the non-macro context to transfer the call */
 309                                         if(strlen(transferer->macrocontext))
 310                                                 transferer_real_context=transferer->macrocontext;
 311                                         else
 312                                                 transferer_real_context=transferer->context;
 313                                 }
 314                                 /* Start autoservice on chan while we talk
 315                                    to the originator */
 316                                 ast_autoservice_start(transferee);
 317                                 ast_moh_start(transferee, NULL);
 318
 319                                 memset(newext, 0, sizeof(newext));
 320                                 ptr = newext;
 321
 322                                         /* Transfer */
 323                                 if ((res=ast_streamfile(transferer, "pbx-transfer", transferer->language))) {
 324                                         ast_moh_stop(transferee);
 325                                         ast_autoservice_stop(transferee);
 326                                         break;
 327                                 }
 328                                 if ((res=ast_waitstream(transferer, AST_DIGIT_ANY)) < 0) {
 329                                         ast_moh_stop(transferee);
 330                                         ast_autoservice_stop(transferee);
 331                                         break;
 332                                 }
 333                                 ast_stopstream(transferer);
 334                                 if (res > 0) {
 335                                         /* If they've typed a digit already, handle it */
 336                                         newext[0] = res;
 337                                         ptr++;
 338                                         len --;
 339                                 }
 340                                 res = 0;
 341                                 while(strlen(newext) < sizeof(newext) - 1) {
 342                                         res = ast_waitfordigit(transferer, 3000);
 343                                         if (res < 1)
 344                                                 break;
 345                                         if (res == '#')
 346                                                 break;
 347                                         *(ptr++) = res;
 348                                         if (!ast_matchmore_extension(transferer, transferer_real_context
 349                                                                 , newext, 1, transferer->callerid)) {
 350                                                 break;
 351                                         }
 352                                 }
 353
 354                                 if (res < 0) {
 355                                         ast_moh_stop(transferee);
 356                                         ast_autoservice_stop(transferee);
 357                                         break;
 358                                 }
 359                                 if (!strcmp(newext, ast_parking_ext())) {
 360                                         ast_moh_stop(transferee);
 361
 362                                         if (ast_autoservice_stop(transferee))
 363                                                 res = -1;
 364                                         else if (!ast_park_call(transferee, transferer, 0, NULL)) {
 365                                                 /* We return non-zero, but tell the PBX not to hang the channel when
 366                                                    the thread dies -- We have to be careful now though.  We are responsible for
 367                                                    hanging up the channel, else it will never be hung up! */
 368
 369                                                 if(transferer==peer)
 370                                                         res=AST_PBX_KEEPALIVE;
 371                                                 else
 372                                                         res=AST_PBX_NO_HANGUP_PEER;
 373                                                 break;
 374                                         } else {
 375                                                 ast_log(LOG_WARNING, "Unable to park call %s\n", transferee->name);
 376                                         }
 377                                         /* XXX Maybe we should have another message here instead of invalid extension XXX */
 378                                 } else if (ast_exists_extension(transferee, transferer_real_context, newext, 1, transferer->callerid)) {
 379                                         ast_moh_stop(transferee);
 380                                         res=ast_autoservice_stop(transferee);
 381                                         if (!transferee->pbx) {
 382                                                 /* Doh!  Use our handy async_goto funcitons */
 383                                                 if (option_verbose > 2)
 384                                                         ast_verbose(VERBOSE_PREFIX_3 "Transferring %s to '%s' (context %s) priority 1\n"
 385                                                                 ,transferee->name, newext, transferer_real_context);
 386                                                 if (ast_async_goto(transferee, transferer_real_context, newext, 1))
 387                                                         ast_log(LOG_WARNING, "Async goto fialed :(\n");
 388                                                 res = -1;
 389                                         } else {
 390                                                 /* Set the channel's new extension, since it exists, using transferer context */
 391                                                 strncpy(transferee->exten, newext, sizeof(transferee->exten)-1);
 392                                                 strncpy(transferee->context, transferer_real_context, sizeof(transferee->context)-1);
 393                                                 transferee->priority = 0;
 394                                                 ast_frfree(f);
 395                                         }
 396                                         break;
 397                                 } else {
 398                                         if (option_verbose > 2)
 399                                                 ast_verbose(VERBOSE_PREFIX_3 "Unable to find extension '%s' in context '%s'\n", newext, transferer_real_context);
 400                                 }
 401                                 res = ast_streamfile(transferer, "pbx-invalid", transferee->language);
 402                                 if (res) {
 403                                         ast_moh_stop(transferee);
 404                                         ast_autoservice_stop(transferee);
 405                                         break;
 406                                 }
 407                                 res = ast_waitstream(transferer, AST_DIGIT_ANY);
 408                                 ast_stopstream(transferer);
 409                                 ast_moh_stop(transferee);
 410                                 res = ast_autoservice_stop(transferee);
 411                                 if (res) {
 412                                         if (option_verbose > 1)
 413                                                 ast_verbose(VERBOSE_PREFIX_2 "Hungup during autoservice stop on '%s'\n", transferee->name);
 414                                 }
 415                         } else {
 416             if (f && (f->frametype == AST_FRAME_DTMF)) {
 417                   if (who == peer)
 418                         ast_write(chan, f);
 419                   else
 420                         ast_write(peer, f);
 421             }
 422 #if 1
 423                                 ast_log(LOG_DEBUG, "Read from %s (%d,%d)\n", who->name, f->frametype, f->subclass);
 424 #endif
 425                         }
 426          if (f)
 427                ast_frfree(f);
 428         }
 429         return res;
 430 }
 431
 432 static void *do_parking_thread(void *ignore)
 433 {
 434         int ms, tms, max;
 435         struct parkeduser *pu, *pl, *pt = NULL;
 436         struct timeval tv;
 437         struct ast_frame *f;
 438         int x;
 439         fd_set rfds, efds;
 440         fd_set nrfds, nefds;
 441         FD_ZERO(&rfds);
 442         FD_ZERO(&efds);
 443         for (;;) {
 444                 ms = -1;
 445                 max = -1;
 446                 ast_mutex_lock(&parking_lock);
 447                 pl = NULL;
 448                 pu = parkinglot;
 449                 gettimeofday(&tv, NULL);
 450                 FD_ZERO(&nrfds);
 451                 FD_ZERO(&nefds);
 452                 while(pu) {
 453                         tms = (tv.tv_sec - pu->start.tv_sec) * 1000 + (tv.tv_usec - pu->start.tv_usec) / 1000;
 454                         if (tms > pu->parkingtime) {
 455                                 /* They've been waiting too long, send them back to where they came.  Theoretically they
 456                                    should have their original extensions and such, but we copy to be on the safe side */
 457                                 strncpy(pu->chan->exten, pu->exten, sizeof(pu->chan->exten)-1);
 458                                 strncpy(pu->chan->context, pu->context, sizeof(pu->chan->context)-1);
 459                                 pu->chan->priority = pu->priority;
 460                                 /* Stop music on hold */
 461                                 ast_moh_stop(pu->chan);
 462                                 /* Start up the PBX, or hang them up */
 463                                 if (ast_pbx_start(pu->chan))  {
 464                                         ast_log(LOG_WARNING, "Unable to restart the PBX for user on '%s', hanging them up...\n", pu->chan->name);
 465                                         ast_hangup(pu->chan);
 466                                 }
 467                                 /* And take them out of the parking lot */
 468                                 if (pl)
 469                                         pl->next = pu->next;
 470                                 else
 471                                         parkinglot = pu->next;
 472                                 pt = pu;
 473                                 pu = pu->next;
 474                                 free(pt);
 475                         } else {
 476                                 for (x=0;x<AST_MAX_FDS;x++) {
 477                                         if ((pu->chan->fds[x] > -1) && (FD_ISSET(pu->chan->fds[x], &rfds) || FD_ISSET(pu->chan->fds[x], &efds))) {
 478                                                 if (FD_ISSET(pu->chan->fds[x], &efds))
 479                                                         pu->chan->exception = 1;
 480                                                 pu->chan->fdno = x;
 481                                                 /* See if they need servicing */
 482                                                 f = ast_read(pu->chan);
 483                                                 if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass ==  AST_CONTROL_HANGUP))) {
 484                                                         /* There's a problem, hang them up*/
 485                                                         if (option_verbose > 1)
 486                                                                 ast_verbose(VERBOSE_PREFIX_2 "%s got tired of being parked\n", pu->chan->name);
 487                                                         ast_hangup(pu->chan);
 488                                                         /* And take them out of the parking lot */
 489                                                         if (pl)
 490                                                                 pl->next = pu->next;
 491                                                         else
 492                                                                 parkinglot = pu->next;
 493                                                         pt = pu;
 494                                                         pu = pu->next;
 495                                                         free(pt);
 496                                                         break;
 497                                                 } else {
 498                                                         /* XXX Maybe we could do something with packets, like dial "0" for operator or something XXX */
 499                                                         ast_frfree(f);
 500                                                         goto std;       /* XXX Ick: jumping into an else statement??? XXX */
 501                                                 }
 502                                         }
 503                                 }
 504                                 if (x >= AST_MAX_FDS) {
 505 std:                                    for (x=0;x<AST_MAX_FDS;x++) {
 506                                                 /* Keep this one for next one */
 507                                                 if (pu->chan->fds[x] > -1) {
 508                                                         FD_SET(pu->chan->fds[x], &nrfds);
 509                                                         FD_SET(pu->chan->fds[x], &nefds);
 510                                                         if (pu->chan->fds[x] > max)
 511                                                                 max = pu->chan->fds[x];
 512                                                 }
 513                                         }
 514                                         /* Keep track of our longest wait */
 515                                         if ((tms < ms) || (ms < 0))
 516                                                 ms = tms;
 517                                         pl = pu;
 518                                         pu = pu->next;
 519                                 }
 520                         }
 521                 }
 522                 ast_mutex_unlock(&parking_lock);
 523                 rfds = nrfds;
 524                 efds = nefds;
 525                 tv.tv_sec = ms / 1000;
 526                 tv.tv_usec = (ms % 1000) * 1000;
 527                 /* Wait for something to happen */
 528                 ast_select(max + 1, &rfds, NULL, &efds, (ms > -1) ? &tv : NULL);
 529                 pthread_testcancel();
 530         }
 531         return NULL;    /* Never reached */
 532 }
 533
 534 static int park_exec(struct ast_channel *chan, void *data)
 535 {
 536         int res=0;
 537         struct localuser *u;
 538         struct ast_channel *peer=NULL;
 539         struct parkeduser *pu, *pl=NULL;
 540         int park;
 541         int dres;
 542         struct ast_bridge_config config;
 543
 544         if (!data) {
 545                 ast_log(LOG_WARNING, "Park requires an argument (extension number)\n");
 546                 return -1;
 547         }
 548         LOCAL_USER_ADD(u);
 549         park = atoi((char *)data);
 550         ast_mutex_lock(&parking_lock);
 551         pu = parkinglot;
 552         while(pu) {
 553                 if (pu->parkingnum == park) {
 554                         if (pl)
 555                                 pl->next = pu->next;
 556                         else
 557                                 parkinglot = pu->next;
 558                         break;
 559                 }
 560                 pl = pu;
 561                 pu = pu->next;
 562         }
 563         ast_mutex_unlock(&parking_lock);
 564         if (pu) {
 565                 peer = pu->chan;
 566                 free(pu);
 567         }
 568         /* JK02: it helps to answer the channel if not already up */
 569         if (chan->_state != AST_STATE_UP) {
 570                 ast_answer(chan);
 571         }
 572
 573         if (peer) {
 574                 ast_moh_stop(peer);
 575                 res = ast_channel_make_compatible(chan, peer);
 576                 if (res < 0) {
 577                         ast_log(LOG_WARNING, "Could not make channels %s and %s compatible for bridge\n", chan->name, peer->name);
 578                         ast_hangup(peer);
 579                         return -1;
 580                 }
 581                 /* This runs sorta backwards, since we give the incoming channel control, as if it
 582                    were the person called. */
 583                 if (option_verbose > 2)
 584                         ast_verbose(VERBOSE_PREFIX_3 "Channel %s connected to parked call %d\n", chan->name, park);
 585
 586                 memset(&config,0,sizeof(struct ast_bridge_config));
 587                 config.allowredirect_in = 1;
 588                 config.allowredirect_out = 1;
 589                 config.allowdisconnect = 0;
 590                 config.timelimit = 0;
 591                 config.play_warning = 0;
 592                 config.warning_freq = 0;
 593                 config.warning_sound=NULL;
 594                 res = ast_bridge_call(chan,peer,&config);
 595
 596                 /* Simulate the PBX hanging up */
 597                 if (res != AST_PBX_NO_HANGUP_PEER)
 598                         ast_hangup(peer);
 599                 return res;
 600         } else {
 601                 /* XXX Play a message XXX */
 602           dres = ast_streamfile(chan, "pbx-invalidpark", chan->language);
 603           if (!dres)
 604             dres = ast_waitstream(chan, "");
 605           else {
 606             ast_log(LOG_WARNING, "ast_streamfile of %s failed on %s\n", "pbx-invalidpark", chan->name);
 607             dres = 0;
 608           }
 609                 if (option_verbose > 2)
 610                         ast_verbose(VERBOSE_PREFIX_3 "Channel %s tried to talk to non-existant parked call %d\n", chan->name, park);
 611                 res = -1;
 612         }
 613         LOCAL_USER_REMOVE(u);
 614         return res;
 615 }
 616
 617 static int handle_parkedcalls(int fd, int argc, char *argv[])
 618 {
 619         struct parkeduser *cur;
 620
 621         ast_cli(fd, "%4s %25s (%-15s %-12s %-4s) %-6s \n", "Num", "Channel"
 622                 , "Context", "Extension", "Pri", "Timeout");
 623
 624         ast_mutex_lock(&parking_lock);
 625
 626         cur=parkinglot;
 627         while(cur) {
 628                 ast_cli(fd, "%4d %25s (%-15s %-12s %-4d) %6lds\n"
 629                         ,cur->parkingnum, cur->chan->name, cur->context, cur->exten
 630                         ,cur->priority, cur->start.tv_sec + (cur->parkingtime/1000) - time(NULL));
 631
 632                 cur = cur->next;
 633         }
 634
 635         ast_mutex_unlock(&parking_lock);
 636
 637         return RESULT_SUCCESS;
 638 }
 639
 640 static char showparked_help[] =
 641 "Usage: show parkedcalls\n"
 642 "       Lists currently parked calls.\n";
 643
 644 static struct ast_cli_entry showparked =
 645 { { "show", "parkedcalls", NULL }, handle_parkedcalls, "Lists parked calls", showparked_help };
 646 /* Dump lot status */
 647 static int manager_parking_status( struct mansession *s, struct message *m )
 648 {
 649         struct parkeduser *cur;
 650         char *id = astman_get_header(m,"ActionID");
 651         char idText[256] = "";
 652
 653         if (id && !ast_strlen_zero(id))
 654                 snprintf(idText,256,"ActionID: %s\r\n",id);
 655
 656         astman_send_ack(s, m, "Parked calls will follow");
 657
 658         ast_mutex_lock(&parking_lock);
 659
 660         cur=parkinglot;
 661         while(cur) {
 662                 ast_cli(s->fd, "Event: ParkedCall\r\n"
 663                         "Exten: %d\r\n"
 664                         "Channel: %s\r\n"
 665                         "Timeout: %ld\r\n"
 666                         "CallerID: %s\r\n"
 667                         "%s"
 668                         "\r\n"
 669                         ,cur->parkingnum, cur->chan->name
 670                         ,(long)cur->start.tv_sec + (long)(cur->parkingtime/1000) - (long)time(NULL)
 671                         ,(cur->chan->callerid ? cur->chan->callerid : "")
 672                         ,idText);
 673
 674                 cur = cur->next;
 675         }
 676
 677         ast_cli(s->fd,
 678         "Event: ParkedCallsComplete\r\n"
 679         "%s"
 680         "\r\n",idText);
 681
 682         ast_mutex_unlock(&parking_lock);
 683
 684         return RESULT_SUCCESS;
 685 }
 686
 687
 688
 689 int load_module(void)
 690 {
 691         int res;
 692         int x;
 693         int start, end;
 694         struct ast_context *con;
 695         char exten[AST_MAX_EXTENSION];
 696         struct ast_config *cfg;
 697         struct ast_variable *var;
 698
 699         ast_cli_register(&showparked);
 700
 701         cfg = ast_load("features.conf");
 702         if (!cfg) {
 703                 cfg = ast_load("parking.conf");
 704                 if (cfg)
 705                         ast_log(LOG_NOTICE, "parking.conf is deprecated in favor of 'features.conf'.  Please rename it.\n");
 706         }
 707         if (cfg) {
 708                 var = ast_variable_browse(cfg, "general");
 709                 while(var) {
 710                         if (!strcasecmp(var->name, "parkext")) {
 711                                 strncpy(parking_ext, var->value, sizeof(parking_ext) - 1);
 712                         } else if (!strcasecmp(var->name, "context")) {
 713                                 strncpy(parking_con, var->value, sizeof(parking_con) - 1);
 714                         } else if (!strcasecmp(var->name, "parkingtime")) {
 715                                 if ((sscanf(var->value, "%d", &parkingtime) != 1) || (parkingtime < 1)) {
 716                                         ast_log(LOG_WARNING, "%s is not a valid parkingtime\n", var->value);
 717                                         parkingtime = DEFAULT_PARK_TIME;
 718                                 } else
 719                                         parkingtime = parkingtime * 1000;
 720                         } else if (!strcasecmp(var->name, "parkpos")) {
 721                                 if (sscanf(var->value, "%i-%i", &start, &end) != 2) {
 722                                         ast_log(LOG_WARNING, "Format for parking positions is a-b, where a and b are numbers at line %d of parking.conf\n", var->lineno);
 723                                 } else {
 724                                         parking_start = start;
 725                                         parking_stop = end;
 726                                 }
 727                         }
 728                         var = var->next;
 729                 }
 730                 ast_destroy(cfg);
 731         }
 732         con = ast_context_find(parking_con);
 733         if (!con) {
 734                 con = ast_context_create(NULL,parking_con, registrar);
 735                 if (!con) {
 736                         ast_log(LOG_ERROR, "Parking context '%s' does not exist and unable to create\n", parking_con);
 737                         return -1;
 738                 }
 739         }
 740         for(x=parking_start; x<=parking_stop;x++) {
 741                 snprintf(exten, sizeof(exten), "%d", x);
 742                 ast_add_extension2(con, 1, exten, 1, NULL, parkedcall, strdup(exten), free, registrar);
 743         }
 744         pthread_create(&parking_thread, NULL, do_parking_thread, NULL);
 745         res = ast_register_application(parkedcall, park_exec, synopsis, descrip);
 746         if (!res) {
 747                 ast_manager_register( "ParkedCalls", 0, manager_parking_status, "List parked calls" );
 748         }
 749         return res;
 750 }
 751
 752 int ast_pickup_call(struct ast_channel *chan)
 753 {
 754         struct ast_channel *cur;
 755         int res = -1;
 756         cur = ast_channel_walk_locked(NULL);
 757         while(cur) {
 758                 if (!cur->pbx &&
 759                         (cur != chan) &&
 760                         (chan->pickupgroup & cur->callgroup) &&
 761                         ((cur->_state == AST_STATE_RINGING) ||
 762                          (cur->_state == AST_STATE_RING))) {
 763                                 break;
 764                 }
 765                 ast_mutex_unlock(&cur->lock);
 766                 cur = ast_channel_walk_locked(cur);
 767         }
 768         if (cur) {
 769                 ast_log(LOG_DEBUG, "Call pickup on chan '%s' by '%s'\n",cur->name, chan->name);
 770                 res = ast_answer(chan);
 771                 if (res)
 772                         ast_log(LOG_WARNING, "Unable to answer '%s'\n", chan->name);
 773                 res = ast_queue_control(chan, AST_CONTROL_ANSWER);
 774                 if (res)
 775                         ast_log(LOG_WARNING, "Unable to queue answer on '%s'\n", chan->name);
 776                 res = ast_channel_masquerade(cur, chan);
 777                 if (res)
 778                         ast_log(LOG_WARNING, "Unable to masquerade '%s' into '%s'\n", chan->name, cur->name);           /* Done */
 779                 ast_mutex_unlock(&cur->lock);
 780         } else  {
 781                 ast_log(LOG_DEBUG, "No call pickup possible...\n");
 782         }
 783         return res;
 784 }
 785
 786 int unload_module(void)
 787 {
 788         STANDARD_HANGUP_LOCALUSERS;
 789
 790         ast_manager_unregister( "ParkedCalls" );
 791         ast_cli_unregister(&showparked);
 792
 793         return ast_unregister_application(parkedcall);
 794 }
 795
 796 char *description(void)
 797 {
 798         return "Call Parking Resource";
 799 }
 800
 801 int usecount(void)
 802 {
 803         /* Never allow parking to be unloaded because it will
 804            unresolve needed symbols in the dialer */
 805 #if 0
 806         int res;
 807         STANDARD_USECOUNT(res);
 808         return res;
 809 #else
 810         return 1;
 811 #endif
 812 }
 813
 814 char *key()
 815 {
 816         return ASTERISK_GPL_KEY;
 817 }