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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 190286 $")
00031
00032 #include <stdio.h>
00033 #include <string.h>
00034 #include <unistd.h>
00035 #include <sys/socket.h>
00036 #include <errno.h>
00037 #include <stdlib.h>
00038 #include <fcntl.h>
00039 #include <netdb.h>
00040 #include <netinet/in.h>
00041 #include <arpa/inet.h>
00042 #include <sys/signal.h>
00043
00044 #include "asterisk/lock.h"
00045 #include "asterisk/channel.h"
00046 #include "asterisk/config.h"
00047 #include "asterisk/logger.h"
00048 #include "asterisk/module.h"
00049 #include "asterisk/pbx.h"
00050 #include "asterisk/options.h"
00051 #include "asterisk/lock.h"
00052 #include "asterisk/sched.h"
00053 #include "asterisk/io.h"
00054 #include "asterisk/rtp.h"
00055 #include "asterisk/acl.h"
00056 #include "asterisk/callerid.h"
00057 #include "asterisk/file.h"
00058 #include "asterisk/cli.h"
00059 #include "asterisk/app.h"
00060 #include "asterisk/musiconhold.h"
00061 #include "asterisk/manager.h"
00062 #include "asterisk/stringfields.h"
00063 #include "asterisk/devicestate.h"
00064
00065 static const char tdesc[] = "Local Proxy Channel Driver";
00066
00067 #define IS_OUTBOUND(a,b) (a == b->chan ? 1 : 0)
00068
00069 static struct ast_channel *local_request(const char *type, int format, void *data, int *cause);
00070 static int local_digit_begin(struct ast_channel *ast, char digit);
00071 static int local_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
00072 static int local_call(struct ast_channel *ast, char *dest, int timeout);
00073 static int local_hangup(struct ast_channel *ast);
00074 static int local_answer(struct ast_channel *ast);
00075 static struct ast_frame *local_read(struct ast_channel *ast);
00076 static int local_write(struct ast_channel *ast, struct ast_frame *f);
00077 static int local_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen);
00078 static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
00079 static int local_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen);
00080 static int local_sendtext(struct ast_channel *ast, const char *text);
00081 static int local_devicestate(void *data);
00082
00083
00084 static const struct ast_channel_tech local_tech = {
00085 .type = "Local",
00086 .description = tdesc,
00087 .capabilities = -1,
00088 .requester = local_request,
00089 .send_digit_begin = local_digit_begin,
00090 .send_digit_end = local_digit_end,
00091 .call = local_call,
00092 .hangup = local_hangup,
00093 .answer = local_answer,
00094 .read = local_read,
00095 .write = local_write,
00096 .write_video = local_write,
00097 .exception = local_read,
00098 .indicate = local_indicate,
00099 .fixup = local_fixup,
00100 .send_html = local_sendhtml,
00101 .send_text = local_sendtext,
00102 .devicestate = local_devicestate,
00103 };
00104
00105 struct local_pvt {
00106 ast_mutex_t lock;
00107 unsigned int flags;
00108 char context[AST_MAX_CONTEXT];
00109 char exten[AST_MAX_EXTENSION];
00110 int reqformat;
00111 struct ast_channel *owner;
00112 struct ast_channel *chan;
00113 struct ast_module_user *u_owner;
00114 struct ast_module_user *u_chan;
00115 AST_LIST_ENTRY(local_pvt) list;
00116 };
00117
00118 #define LOCAL_GLARE_DETECT (1 << 0)
00119 #define LOCAL_CANCEL_QUEUE (1 << 1)
00120 #define LOCAL_ALREADY_MASQED (1 << 2)
00121 #define LOCAL_LAUNCHED_PBX (1 << 3)
00122 #define LOCAL_NO_OPTIMIZATION (1 << 4)
00123
00124 static AST_LIST_HEAD_STATIC(locals, local_pvt);
00125
00126
00127 static int local_devicestate(void *data)
00128 {
00129 char *exten = ast_strdupa(data);
00130 char *context = NULL, *opts = NULL;
00131 int res;
00132
00133 if (!(context = strchr(exten, '@'))) {
00134 ast_log(LOG_WARNING, "Someone used Local/%s somewhere without a @context. This is bad.\n", exten);
00135 return AST_DEVICE_INVALID;
00136 }
00137
00138 *context++ = '\0';
00139
00140
00141 if ((opts = strchr(context, '/')))
00142 *opts = '\0';
00143
00144 if (option_debug > 2)
00145 ast_log(LOG_DEBUG, "Checking if extension %s@%s exists (devicestate)\n", exten, context);
00146 res = ast_exists_extension(NULL, context, exten, 1, NULL);
00147 if (!res)
00148 return AST_DEVICE_INVALID;
00149 else
00150 return AST_DEVICE_UNKNOWN;
00151 }
00152
00153
00154
00155
00156 static struct local_pvt *local_pvt_destroy(struct local_pvt *pvt)
00157 {
00158 ast_mutex_destroy(&pvt->lock);
00159 free(pvt);
00160 return NULL;
00161 }
00162
00163 static int local_queue_frame(struct local_pvt *p, int isoutbound, struct ast_frame *f,
00164 struct ast_channel *us, int us_locked)
00165 {
00166 struct ast_channel *other = NULL;
00167
00168
00169 other = isoutbound ? p->owner : p->chan;
00170
00171 if (!other) {
00172 return 0;
00173 }
00174
00175
00176 if (us && us->generator && other->generator) {
00177 return 0;
00178 }
00179
00180
00181 ast_set_flag(p, LOCAL_GLARE_DETECT);
00182
00183
00184 while (other && ast_channel_trylock(other)) {
00185 ast_mutex_unlock(&p->lock);
00186 if (us && us_locked) {
00187 do {
00188 ast_channel_unlock(us);
00189 usleep(1);
00190 ast_channel_lock(us);
00191 } while (ast_mutex_trylock(&p->lock));
00192 } else {
00193 usleep(1);
00194 ast_mutex_lock(&p->lock);
00195 }
00196 other = isoutbound ? p->owner : p->chan;
00197 }
00198
00199
00200
00201
00202 if (ast_test_flag(p, LOCAL_CANCEL_QUEUE)) {
00203
00204
00205 ast_mutex_unlock(&p->lock);
00206 p = local_pvt_destroy(p);
00207 return -1;
00208 }
00209
00210 if (other) {
00211 ast_queue_frame(other, f);
00212 ast_channel_unlock(other);
00213 }
00214
00215 ast_clear_flag(p, LOCAL_GLARE_DETECT);
00216
00217 return 0;
00218 }
00219
00220 static int local_answer(struct ast_channel *ast)
00221 {
00222 struct local_pvt *p = ast->tech_pvt;
00223 int isoutbound;
00224 int res = -1;
00225
00226 if (!p)
00227 return -1;
00228
00229 ast_mutex_lock(&p->lock);
00230 isoutbound = IS_OUTBOUND(ast, p);
00231 if (isoutbound) {
00232
00233 struct ast_frame answer = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER };
00234 res = local_queue_frame(p, isoutbound, &answer, ast, 1);
00235 } else
00236 ast_log(LOG_WARNING, "Huh? Local is being asked to answer?\n");
00237 if (!res)
00238 ast_mutex_unlock(&p->lock);
00239 return res;
00240 }
00241
00242 static void check_bridge(struct local_pvt *p, int isoutbound)
00243 {
00244 struct ast_channel_monitor *tmp;
00245 if (ast_test_flag(p, LOCAL_ALREADY_MASQED) || ast_test_flag(p, LOCAL_NO_OPTIMIZATION) || !p->chan || !p->owner || (p->chan->_bridge != ast_bridged_channel(p->chan)))
00246 return;
00247
00248
00249
00250
00251
00252
00253 if (isoutbound && p->chan->_bridge && AST_LIST_EMPTY(&p->owner->readq)) {
00254
00255
00256
00257
00258 if (!ast_mutex_trylock(&(p->chan->_bridge)->lock)) {
00259 if (!p->chan->_bridge->_softhangup) {
00260 if (!ast_mutex_trylock(&p->owner->lock)) {
00261 if (!p->owner->_softhangup) {
00262 if (p->owner->monitor && !p->chan->_bridge->monitor) {
00263
00264
00265
00266
00267
00268 tmp = p->owner->monitor;
00269 p->owner->monitor = p->chan->_bridge->monitor;
00270 p->chan->_bridge->monitor = tmp;
00271 }
00272 if (p->chan->audiohooks) {
00273 struct ast_audiohook_list *audiohooks_swapper;
00274 audiohooks_swapper = p->chan->audiohooks;
00275 p->chan->audiohooks = p->owner->audiohooks;
00276 p->owner->audiohooks = audiohooks_swapper;
00277 }
00278 ast_app_group_update(p->chan, p->owner);
00279 ast_channel_masquerade(p->owner, p->chan->_bridge);
00280 ast_set_flag(p, LOCAL_ALREADY_MASQED);
00281 }
00282 ast_mutex_unlock(&p->owner->lock);
00283 }
00284 ast_mutex_unlock(&(p->chan->_bridge)->lock);
00285 }
00286 }
00287
00288
00289
00290
00291 #if 0
00292 } else if (!isoutbound && p->owner && p->owner->_bridge && p->chan && AST_LIST_EMPTY(&p->chan->readq)) {
00293
00294 if (!ast_mutex_trylock(&(p->owner->_bridge)->lock)) {
00295 if (!p->owner->_bridge->_softhangup) {
00296 if (!ast_mutex_trylock(&p->chan->lock)) {
00297 if (!p->chan->_softhangup) {
00298 ast_channel_masquerade(p->chan, p->owner->_bridge);
00299 ast_set_flag(p, LOCAL_ALREADY_MASQED);
00300 }
00301 ast_mutex_unlock(&p->chan->lock);
00302 }
00303 }
00304 ast_mutex_unlock(&(p->owner->_bridge)->lock);
00305 }
00306 #endif
00307 }
00308 }
00309
00310 static struct ast_frame *local_read(struct ast_channel *ast)
00311 {
00312 return &ast_null_frame;
00313 }
00314
00315 static int local_write(struct ast_channel *ast, struct ast_frame *f)
00316 {
00317 struct local_pvt *p = ast->tech_pvt;
00318 int res = -1;
00319 int isoutbound;
00320
00321 if (!p)
00322 return -1;
00323
00324
00325 ast_mutex_lock(&p->lock);
00326 isoutbound = IS_OUTBOUND(ast, p);
00327 if (f && (f->frametype == AST_FRAME_VOICE || f->frametype == AST_FRAME_VIDEO))
00328 check_bridge(p, isoutbound);
00329 if (!ast_test_flag(p, LOCAL_ALREADY_MASQED))
00330 res = local_queue_frame(p, isoutbound, f, ast, 1);
00331 else {
00332 if (option_debug)
00333 ast_log(LOG_DEBUG, "Not posting to queue since already masked on '%s'\n", ast->name);
00334 res = 0;
00335 }
00336 if (!res)
00337 ast_mutex_unlock(&p->lock);
00338 return res;
00339 }
00340
00341 static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
00342 {
00343 struct local_pvt *p = newchan->tech_pvt;
00344
00345 if (!p)
00346 return -1;
00347
00348 ast_mutex_lock(&p->lock);
00349
00350 if ((p->owner != oldchan) && (p->chan != oldchan)) {
00351 ast_log(LOG_WARNING, "Old channel wasn't %p but was %p/%p\n", oldchan, p->owner, p->chan);
00352 ast_mutex_unlock(&p->lock);
00353 return -1;
00354 }
00355 if (p->owner == oldchan)
00356 p->owner = newchan;
00357 else
00358 p->chan = newchan;
00359 ast_mutex_unlock(&p->lock);
00360 return 0;
00361 }
00362
00363 static int local_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
00364 {
00365 struct local_pvt *p = ast->tech_pvt;
00366 int res = 0;
00367 struct ast_frame f = { AST_FRAME_CONTROL, };
00368 int isoutbound;
00369
00370 if (!p)
00371 return -1;
00372
00373
00374 if (condition == AST_CONTROL_HOLD) {
00375 ast_moh_start(ast, data, NULL);
00376 } else if (condition == AST_CONTROL_UNHOLD) {
00377 ast_moh_stop(ast);
00378 } else {
00379
00380 ast_mutex_lock(&p->lock);
00381 isoutbound = IS_OUTBOUND(ast, p);
00382 f.subclass = condition;
00383 f.data = (void*)data;
00384 f.datalen = datalen;
00385 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 1)))
00386 ast_mutex_unlock(&p->lock);
00387 }
00388
00389 return res;
00390 }
00391
00392 static int local_digit_begin(struct ast_channel *ast, char digit)
00393 {
00394 struct local_pvt *p = ast->tech_pvt;
00395 int res = -1;
00396 struct ast_frame f = { AST_FRAME_DTMF_BEGIN, };
00397 int isoutbound;
00398
00399 if (!p)
00400 return -1;
00401
00402 ast_mutex_lock(&p->lock);
00403 isoutbound = IS_OUTBOUND(ast, p);
00404 f.subclass = digit;
00405 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00406 ast_mutex_unlock(&p->lock);
00407
00408 return res;
00409 }
00410
00411 static int local_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
00412 {
00413 struct local_pvt *p = ast->tech_pvt;
00414 int res = -1;
00415 struct ast_frame f = { AST_FRAME_DTMF_END, };
00416 int isoutbound;
00417
00418 if (!p)
00419 return -1;
00420
00421 ast_mutex_lock(&p->lock);
00422 isoutbound = IS_OUTBOUND(ast, p);
00423 f.subclass = digit;
00424 f.len = duration;
00425 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00426 ast_mutex_unlock(&p->lock);
00427
00428 return res;
00429 }
00430
00431 static int local_sendtext(struct ast_channel *ast, const char *text)
00432 {
00433 struct local_pvt *p = ast->tech_pvt;
00434 int res = -1;
00435 struct ast_frame f = { AST_FRAME_TEXT, };
00436 int isoutbound;
00437
00438 if (!p)
00439 return -1;
00440
00441 ast_mutex_lock(&p->lock);
00442 isoutbound = IS_OUTBOUND(ast, p);
00443 f.data = (char *) text;
00444 f.datalen = strlen(text) + 1;
00445 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00446 ast_mutex_unlock(&p->lock);
00447 return res;
00448 }
00449
00450 static int local_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
00451 {
00452 struct local_pvt *p = ast->tech_pvt;
00453 int res = -1;
00454 struct ast_frame f = { AST_FRAME_HTML, };
00455 int isoutbound;
00456
00457 if (!p)
00458 return -1;
00459
00460 ast_mutex_lock(&p->lock);
00461 isoutbound = IS_OUTBOUND(ast, p);
00462 f.subclass = subclass;
00463 f.data = (char *)data;
00464 f.datalen = datalen;
00465 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00466 ast_mutex_unlock(&p->lock);
00467 return res;
00468 }
00469
00470
00471
00472 static int local_call(struct ast_channel *ast, char *dest, int timeout)
00473 {
00474 struct local_pvt *p = ast->tech_pvt;
00475 int res;
00476 struct ast_var_t *varptr = NULL, *new;
00477 size_t len, namelen;
00478
00479 if (!p)
00480 return -1;
00481
00482 ast_mutex_lock(&p->lock);
00483
00484
00485
00486
00487
00488 p->chan->cid.cid_dnid = ast_strdup(p->owner->cid.cid_dnid);
00489 p->chan->cid.cid_num = ast_strdup(p->owner->cid.cid_num);
00490 p->chan->cid.cid_name = ast_strdup(p->owner->cid.cid_name);
00491 p->chan->cid.cid_rdnis = ast_strdup(p->owner->cid.cid_rdnis);
00492 p->chan->cid.cid_ani = ast_strdup(p->owner->cid.cid_ani);
00493 p->chan->cid.cid_pres = p->owner->cid.cid_pres;
00494 p->chan->cid.cid_ani2 = p->owner->cid.cid_ani2;
00495 p->chan->cid.cid_ton = p->owner->cid.cid_ton;
00496 p->chan->cid.cid_tns = p->owner->cid.cid_tns;
00497 ast_string_field_set(p->chan, language, p->owner->language);
00498 ast_string_field_set(p->chan, accountcode, p->owner->accountcode);
00499 ast_string_field_set(p->chan, musicclass, p->owner->musicclass);
00500 ast_cdr_update(p->chan);
00501 p->chan->cdrflags = p->owner->cdrflags;
00502
00503 if (!ast_exists_extension(NULL, p->chan->context, p->chan->exten, 1, p->owner->cid.cid_num)) {
00504 ast_log(LOG_NOTICE, "No such extension/context %s@%s while calling Local channel\n", p->chan->exten, p->chan->context);
00505 ast_mutex_unlock(&p->lock);
00506 return -1;
00507 }
00508
00509
00510
00511 AST_LIST_TRAVERSE(&p->owner->varshead, varptr, entries) {
00512 namelen = strlen(varptr->name);
00513 len = sizeof(struct ast_var_t) + namelen + strlen(varptr->value) + 2;
00514 if ((new = ast_calloc(1, len))) {
00515 memcpy(new, varptr, len);
00516 new->value = &(new->name[0]) + namelen + 1;
00517 AST_LIST_INSERT_TAIL(&p->chan->varshead, new, entries);
00518 }
00519 }
00520 ast_channel_datastore_inherit(p->owner, p->chan);
00521
00522
00523 if (!(res = ast_pbx_start(p->chan)))
00524 ast_set_flag(p, LOCAL_LAUNCHED_PBX);
00525
00526 ast_mutex_unlock(&p->lock);
00527 return res;
00528 }
00529
00530
00531 static int local_hangup(struct ast_channel *ast)
00532 {
00533 struct local_pvt *p = ast->tech_pvt;
00534 int isoutbound;
00535 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP };
00536 struct ast_channel *ochan = NULL;
00537 int glaredetect = 0, res = 0;
00538
00539 if (!p)
00540 return -1;
00541
00542 while (ast_mutex_trylock(&p->lock)) {
00543 ast_channel_unlock(ast);
00544 usleep(1);
00545 ast_channel_lock(ast);
00546 }
00547
00548 isoutbound = IS_OUTBOUND(ast, p);
00549 if (isoutbound) {
00550 const char *status = pbx_builtin_getvar_helper(p->chan, "DIALSTATUS");
00551 if ((status) && (p->owner)) {
00552
00553 while (p->owner && ast_channel_trylock(p->owner)) {
00554 ast_mutex_unlock(&p->lock);
00555 if (ast) {
00556 ast_channel_unlock(ast);
00557 }
00558 usleep(1);
00559 if (ast) {
00560 ast_channel_lock(ast);
00561 }
00562 ast_mutex_lock(&p->lock);
00563 }
00564 if (p->owner) {
00565 pbx_builtin_setvar_helper(p->owner, "CHANLOCALSTATUS", status);
00566 ast_channel_unlock(p->owner);
00567 }
00568 }
00569 p->chan = NULL;
00570 ast_clear_flag(p, LOCAL_LAUNCHED_PBX);
00571 ast_module_user_remove(p->u_chan);
00572 } else {
00573 p->owner = NULL;
00574 ast_module_user_remove(p->u_owner);
00575 while (p->chan && ast_channel_trylock(p->chan)) {
00576 DEADLOCK_AVOIDANCE(&p->lock);
00577 }
00578 if (p->chan) {
00579 ast_queue_hangup(p->chan);
00580 ast_channel_unlock(p->chan);
00581 }
00582 }
00583
00584 ast->tech_pvt = NULL;
00585
00586 if (!p->owner && !p->chan) {
00587
00588 glaredetect = ast_test_flag(p, LOCAL_GLARE_DETECT);
00589
00590
00591 if (glaredetect)
00592 ast_set_flag(p, LOCAL_CANCEL_QUEUE);
00593
00594 AST_LIST_LOCK(&locals);
00595 AST_LIST_REMOVE(&locals, p, list);
00596 AST_LIST_UNLOCK(&locals);
00597 ast_mutex_unlock(&p->lock);
00598
00599 if (!glaredetect) {
00600 p = local_pvt_destroy(p);
00601 }
00602 return 0;
00603 }
00604 if (p->chan && !ast_test_flag(p, LOCAL_LAUNCHED_PBX))
00605
00606 ochan = p->chan;
00607 else
00608 res = local_queue_frame(p, isoutbound, &f, NULL, 1);
00609 if (!res)
00610 ast_mutex_unlock(&p->lock);
00611 if (ochan)
00612 ast_hangup(ochan);
00613 return 0;
00614 }
00615
00616
00617 static struct local_pvt *local_alloc(const char *data, int format)
00618 {
00619 struct local_pvt *tmp = NULL;
00620 char *c = NULL, *opts = NULL;
00621
00622 if (!(tmp = ast_calloc(1, sizeof(*tmp))))
00623 return NULL;
00624
00625
00626 ast_mutex_init(&tmp->lock);
00627 ast_copy_string(tmp->exten, data, sizeof(tmp->exten));
00628
00629
00630 if ((opts = strchr(tmp->exten, '/'))) {
00631 *opts++ = '\0';
00632 if (strchr(opts, 'n'))
00633 ast_set_flag(tmp, LOCAL_NO_OPTIMIZATION);
00634 }
00635
00636
00637 if ((c = strchr(tmp->exten, '@')))
00638 *c++ = '\0';
00639
00640 ast_copy_string(tmp->context, c ? c : "default", sizeof(tmp->context));
00641
00642 tmp->reqformat = format;
00643
00644 #if 0
00645
00646
00647
00648 if (!ast_exists_extension(NULL, tmp->context, tmp->exten, 1, NULL)) {
00649 ast_log(LOG_NOTICE, "No such extension/context %s@%s creating local channel\n", tmp->exten, tmp->context);
00650 tmp = local_pvt_destroy(tmp);
00651 } else {
00652 #endif
00653
00654 AST_LIST_LOCK(&locals);
00655 AST_LIST_INSERT_HEAD(&locals, tmp, list);
00656 AST_LIST_UNLOCK(&locals);
00657 #if 0
00658 }
00659 #endif
00660
00661 return tmp;
00662 }
00663
00664
00665 static struct ast_channel *local_new(struct local_pvt *p, int state)
00666 {
00667 struct ast_channel *tmp = NULL, *tmp2 = NULL;
00668 int randnum = ast_random() & 0xffff, fmt = 0;
00669 const char *t;
00670 int ama;
00671
00672
00673
00674 if (p->owner && p->owner->accountcode)
00675 t = p->owner->accountcode;
00676 else
00677 t = "";
00678
00679 if (p->owner)
00680 ama = p->owner->amaflags;
00681 else
00682 ama = 0;
00683 if (!(tmp = ast_channel_alloc(1, state, 0, 0, t, p->exten, p->context, ama, "Local/%s@%s-%04x,1", p->exten, p->context, randnum))
00684 || !(tmp2 = ast_channel_alloc(1, AST_STATE_RING, 0, 0, t, p->exten, p->context, ama, "Local/%s@%s-%04x,2", p->exten, p->context, randnum))) {
00685 if (tmp)
00686 ast_channel_free(tmp);
00687 if (tmp2)
00688 ast_channel_free(tmp2);
00689 ast_log(LOG_WARNING, "Unable to allocate channel structure(s)\n");
00690 return NULL;
00691 }
00692
00693 tmp2->tech = tmp->tech = &local_tech;
00694
00695 tmp->nativeformats = p->reqformat;
00696 tmp2->nativeformats = p->reqformat;
00697
00698
00699 fmt = ast_best_codec(p->reqformat);
00700 tmp->writeformat = fmt;
00701 tmp2->writeformat = fmt;
00702 tmp->rawwriteformat = fmt;
00703 tmp2->rawwriteformat = fmt;
00704 tmp->readformat = fmt;
00705 tmp2->readformat = fmt;
00706 tmp->rawreadformat = fmt;
00707 tmp2->rawreadformat = fmt;
00708
00709 tmp->tech_pvt = p;
00710 tmp2->tech_pvt = p;
00711
00712 p->owner = tmp;
00713 p->chan = tmp2;
00714 p->u_owner = ast_module_user_add(p->owner);
00715 p->u_chan = ast_module_user_add(p->chan);
00716
00717 ast_copy_string(tmp->context, p->context, sizeof(tmp->context));
00718 ast_copy_string(tmp2->context, p->context, sizeof(tmp2->context));
00719 ast_copy_string(tmp2->exten, p->exten, sizeof(tmp->exten));
00720 tmp->priority = 1;
00721 tmp2->priority = 1;
00722
00723 return tmp;
00724 }
00725
00726
00727 static struct ast_channel *local_request(const char *type, int format, void *data, int *cause)
00728 {
00729 struct local_pvt *p = NULL;
00730 struct ast_channel *chan = NULL;
00731
00732
00733 if ((p = local_alloc(data, format))) {
00734 if (!(chan = local_new(p, AST_STATE_DOWN))) {
00735 AST_LIST_LOCK(&locals);
00736 AST_LIST_REMOVE(&locals, p, list);
00737 AST_LIST_UNLOCK(&locals);
00738 p = local_pvt_destroy(p);
00739 }
00740 }
00741
00742 return chan;
00743 }
00744
00745
00746 static int locals_show(int fd, int argc, char **argv)
00747 {
00748 struct local_pvt *p = NULL;
00749
00750 if (argc != 3)
00751 return RESULT_SHOWUSAGE;
00752
00753 AST_LIST_LOCK(&locals);
00754 if (!AST_LIST_EMPTY(&locals)) {
00755 AST_LIST_TRAVERSE(&locals, p, list) {
00756 ast_mutex_lock(&p->lock);
00757 ast_cli(fd, "%s -- %s@%s\n", p->owner ? p->owner->name : "<unowned>", p->exten, p->context);
00758 ast_mutex_unlock(&p->lock);
00759 }
00760 } else
00761 ast_cli(fd, "No local channels in use\n");
00762 AST_LIST_UNLOCK(&locals);
00763
00764 return RESULT_SUCCESS;
00765 }
00766
00767 static char show_locals_usage[] =
00768 "Usage: local show channels\n"
00769 " Provides summary information on active local proxy channels.\n";
00770
00771 static struct ast_cli_entry cli_local[] = {
00772 { { "local", "show", "channels", NULL },
00773 locals_show, "List status of local channels",
00774 show_locals_usage },
00775 };
00776
00777
00778 static int load_module(void)
00779 {
00780
00781 if (ast_channel_register(&local_tech)) {
00782 ast_log(LOG_ERROR, "Unable to register channel class 'Local'\n");
00783 return -1;
00784 }
00785 ast_cli_register_multiple(cli_local, sizeof(cli_local) / sizeof(struct ast_cli_entry));
00786 return 0;
00787 }
00788
00789
00790 static int unload_module(void)
00791 {
00792 struct local_pvt *p = NULL;
00793
00794
00795 ast_cli_unregister_multiple(cli_local, sizeof(cli_local) / sizeof(struct ast_cli_entry));
00796 ast_channel_unregister(&local_tech);
00797 if (!AST_LIST_LOCK(&locals)) {
00798
00799 AST_LIST_TRAVERSE(&locals, p, list) {
00800 if (p->owner)
00801 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
00802 }
00803 AST_LIST_UNLOCK(&locals);
00804 } else {
00805 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
00806 return -1;
00807 }
00808 return 0;
00809 }
00810
00811 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Local Proxy Channel (Note: used internally by other modules)");