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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 125740 $")
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
00172 ast_set_flag(p, LOCAL_GLARE_DETECT);
00173 if (ast_test_flag(p, LOCAL_CANCEL_QUEUE)) {
00174
00175
00176 ast_mutex_unlock(&p->lock);
00177 p = local_pvt_destroy(p);
00178 return -1;
00179 }
00180 if (!other) {
00181 ast_clear_flag(p, LOCAL_GLARE_DETECT);
00182 return 0;
00183 }
00184
00185
00186 while (other && ast_channel_trylock(other)) {
00187 ast_mutex_unlock(&p->lock);
00188 if (us && us_locked) {
00189 do {
00190 ast_channel_unlock(us);
00191 usleep(1);
00192 ast_channel_lock(us);
00193 } while (ast_mutex_trylock(&p->lock));
00194 } else {
00195 usleep(1);
00196 ast_mutex_lock(&p->lock);
00197 }
00198 other = isoutbound ? p->owner : p->chan;
00199 }
00200
00201 if (other) {
00202 ast_queue_frame(other, f);
00203 ast_channel_unlock(other);
00204 }
00205
00206 ast_clear_flag(p, LOCAL_GLARE_DETECT);
00207
00208 return 0;
00209 }
00210
00211 static int local_answer(struct ast_channel *ast)
00212 {
00213 struct local_pvt *p = ast->tech_pvt;
00214 int isoutbound;
00215 int res = -1;
00216
00217 if (!p)
00218 return -1;
00219
00220 ast_mutex_lock(&p->lock);
00221 isoutbound = IS_OUTBOUND(ast, p);
00222 if (isoutbound) {
00223
00224 struct ast_frame answer = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER };
00225 res = local_queue_frame(p, isoutbound, &answer, ast, 1);
00226 } else
00227 ast_log(LOG_WARNING, "Huh? Local is being asked to answer?\n");
00228 if (!res)
00229 ast_mutex_unlock(&p->lock);
00230 return res;
00231 }
00232
00233 static void check_bridge(struct local_pvt *p, int isoutbound)
00234 {
00235 struct ast_channel_monitor *tmp;
00236 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)))
00237 return;
00238
00239
00240
00241
00242
00243
00244 if (isoutbound && p->chan->_bridge && AST_LIST_EMPTY(&p->owner->readq)) {
00245
00246
00247
00248
00249 if (!ast_mutex_trylock(&(p->chan->_bridge)->lock)) {
00250 if (!p->chan->_bridge->_softhangup) {
00251 if (!ast_mutex_trylock(&p->owner->lock)) {
00252 if (!p->owner->_softhangup) {
00253 if(p->owner->monitor && !p->chan->_bridge->monitor) {
00254
00255
00256
00257
00258
00259 tmp = p->owner->monitor;
00260 p->owner->monitor = p->chan->_bridge->monitor;
00261 p->chan->_bridge->monitor = tmp;
00262 }
00263 ast_channel_masquerade(p->owner, p->chan->_bridge);
00264 ast_set_flag(p, LOCAL_ALREADY_MASQED);
00265 }
00266 ast_mutex_unlock(&p->owner->lock);
00267 }
00268 ast_mutex_unlock(&(p->chan->_bridge)->lock);
00269 }
00270 }
00271
00272
00273
00274
00275 #if 0
00276 } else if (!isoutbound && p->owner && p->owner->_bridge && p->chan && AST_LIST_EMPTY(&p->chan->readq)) {
00277
00278 if (!ast_mutex_trylock(&(p->owner->_bridge)->lock)) {
00279 if (!p->owner->_bridge->_softhangup) {
00280 if (!ast_mutex_trylock(&p->chan->lock)) {
00281 if (!p->chan->_softhangup) {
00282 ast_channel_masquerade(p->chan, p->owner->_bridge);
00283 ast_set_flag(p, LOCAL_ALREADY_MASQED);
00284 }
00285 ast_mutex_unlock(&p->chan->lock);
00286 }
00287 }
00288 ast_mutex_unlock(&(p->owner->_bridge)->lock);
00289 }
00290 #endif
00291 }
00292 }
00293
00294 static struct ast_frame *local_read(struct ast_channel *ast)
00295 {
00296 return &ast_null_frame;
00297 }
00298
00299 static int local_write(struct ast_channel *ast, struct ast_frame *f)
00300 {
00301 struct local_pvt *p = ast->tech_pvt;
00302 int res = -1;
00303 int isoutbound;
00304
00305 if (!p)
00306 return -1;
00307
00308
00309 ast_mutex_lock(&p->lock);
00310 isoutbound = IS_OUTBOUND(ast, p);
00311 if (f && (f->frametype == AST_FRAME_VOICE || f->frametype == AST_FRAME_VIDEO))
00312 check_bridge(p, isoutbound);
00313 if (!ast_test_flag(p, LOCAL_ALREADY_MASQED))
00314 res = local_queue_frame(p, isoutbound, f, ast, 1);
00315 else {
00316 if (option_debug)
00317 ast_log(LOG_DEBUG, "Not posting to queue since already masked on '%s'\n", ast->name);
00318 res = 0;
00319 }
00320 if (!res)
00321 ast_mutex_unlock(&p->lock);
00322 return res;
00323 }
00324
00325 static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
00326 {
00327 struct local_pvt *p = newchan->tech_pvt;
00328
00329 if (!p)
00330 return -1;
00331
00332 ast_mutex_lock(&p->lock);
00333
00334 if ((p->owner != oldchan) && (p->chan != oldchan)) {
00335 ast_log(LOG_WARNING, "Old channel wasn't %p but was %p/%p\n", oldchan, p->owner, p->chan);
00336 ast_mutex_unlock(&p->lock);
00337 return -1;
00338 }
00339 if (p->owner == oldchan)
00340 p->owner = newchan;
00341 else
00342 p->chan = newchan;
00343 ast_mutex_unlock(&p->lock);
00344 return 0;
00345 }
00346
00347 static int local_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
00348 {
00349 struct local_pvt *p = ast->tech_pvt;
00350 int res = 0;
00351 struct ast_frame f = { AST_FRAME_CONTROL, };
00352 int isoutbound;
00353
00354 if (!p)
00355 return -1;
00356
00357
00358 if (condition == AST_CONTROL_HOLD) {
00359 ast_moh_start(ast, data, NULL);
00360 } else if (condition == AST_CONTROL_UNHOLD) {
00361 ast_moh_stop(ast);
00362 } else {
00363
00364 ast_mutex_lock(&p->lock);
00365 isoutbound = IS_OUTBOUND(ast, p);
00366 f.subclass = condition;
00367 f.data = (void*)data;
00368 f.datalen = datalen;
00369 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 1)))
00370 ast_mutex_unlock(&p->lock);
00371 }
00372
00373 return res;
00374 }
00375
00376 static int local_digit_begin(struct ast_channel *ast, char digit)
00377 {
00378 struct local_pvt *p = ast->tech_pvt;
00379 int res = -1;
00380 struct ast_frame f = { AST_FRAME_DTMF_BEGIN, };
00381 int isoutbound;
00382
00383 if (!p)
00384 return -1;
00385
00386 ast_mutex_lock(&p->lock);
00387 isoutbound = IS_OUTBOUND(ast, p);
00388 f.subclass = digit;
00389 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00390 ast_mutex_unlock(&p->lock);
00391
00392 return res;
00393 }
00394
00395 static int local_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
00396 {
00397 struct local_pvt *p = ast->tech_pvt;
00398 int res = -1;
00399 struct ast_frame f = { AST_FRAME_DTMF_END, };
00400 int isoutbound;
00401
00402 if (!p)
00403 return -1;
00404
00405 ast_mutex_lock(&p->lock);
00406 isoutbound = IS_OUTBOUND(ast, p);
00407 f.subclass = digit;
00408 f.len = duration;
00409 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00410 ast_mutex_unlock(&p->lock);
00411
00412 return res;
00413 }
00414
00415 static int local_sendtext(struct ast_channel *ast, const char *text)
00416 {
00417 struct local_pvt *p = ast->tech_pvt;
00418 int res = -1;
00419 struct ast_frame f = { AST_FRAME_TEXT, };
00420 int isoutbound;
00421
00422 if (!p)
00423 return -1;
00424
00425 ast_mutex_lock(&p->lock);
00426 isoutbound = IS_OUTBOUND(ast, p);
00427 f.data = (char *) text;
00428 f.datalen = strlen(text) + 1;
00429 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00430 ast_mutex_unlock(&p->lock);
00431 return res;
00432 }
00433
00434 static int local_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
00435 {
00436 struct local_pvt *p = ast->tech_pvt;
00437 int res = -1;
00438 struct ast_frame f = { AST_FRAME_HTML, };
00439 int isoutbound;
00440
00441 if (!p)
00442 return -1;
00443
00444 ast_mutex_lock(&p->lock);
00445 isoutbound = IS_OUTBOUND(ast, p);
00446 f.subclass = subclass;
00447 f.data = (char *)data;
00448 f.datalen = datalen;
00449 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00450 ast_mutex_unlock(&p->lock);
00451 return res;
00452 }
00453
00454
00455
00456 static int local_call(struct ast_channel *ast, char *dest, int timeout)
00457 {
00458 struct local_pvt *p = ast->tech_pvt;
00459 int res;
00460 struct ast_var_t *varptr = NULL, *new;
00461 size_t len, namelen;
00462
00463 if (!p)
00464 return -1;
00465
00466 ast_mutex_lock(&p->lock);
00467
00468
00469
00470
00471
00472 p->chan->cid.cid_num = ast_strdup(p->owner->cid.cid_num);
00473 p->chan->cid.cid_name = ast_strdup(p->owner->cid.cid_name);
00474 p->chan->cid.cid_rdnis = ast_strdup(p->owner->cid.cid_rdnis);
00475 p->chan->cid.cid_ani = ast_strdup(p->owner->cid.cid_ani);
00476 p->chan->cid.cid_pres = p->owner->cid.cid_pres;
00477 ast_string_field_set(p->chan, language, p->owner->language);
00478 ast_string_field_set(p->chan, accountcode, p->owner->accountcode);
00479 ast_cdr_update(p->chan);
00480 p->chan->cdrflags = p->owner->cdrflags;
00481
00482
00483
00484 AST_LIST_TRAVERSE(&p->owner->varshead, varptr, entries) {
00485 namelen = strlen(varptr->name);
00486 len = sizeof(struct ast_var_t) + namelen + strlen(varptr->value) + 2;
00487 if ((new = ast_calloc(1, len))) {
00488 memcpy(new, varptr, len);
00489 new->value = &(new->name[0]) + namelen + 1;
00490 AST_LIST_INSERT_TAIL(&p->chan->varshead, new, entries);
00491 }
00492 }
00493 ast_channel_datastore_inherit(p->owner, p->chan);
00494
00495
00496 if (!(res = ast_pbx_start(p->chan)))
00497 ast_set_flag(p, LOCAL_LAUNCHED_PBX);
00498
00499 ast_mutex_unlock(&p->lock);
00500 return res;
00501 }
00502
00503
00504 static int local_hangup(struct ast_channel *ast)
00505 {
00506 struct local_pvt *p = ast->tech_pvt;
00507 int isoutbound;
00508 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP };
00509 struct ast_channel *ochan = NULL;
00510 int glaredetect = 0, res = 0;
00511
00512 if (!p)
00513 return -1;
00514
00515 while (ast_mutex_trylock(&p->lock)) {
00516 ast_channel_unlock(ast);
00517 usleep(1);
00518 ast_channel_lock(ast);
00519 }
00520
00521 isoutbound = IS_OUTBOUND(ast, p);
00522 if (isoutbound) {
00523 const char *status = pbx_builtin_getvar_helper(p->chan, "DIALSTATUS");
00524 if ((status) && (p->owner)) {
00525
00526 while (p->owner && ast_channel_trylock(p->owner)) {
00527 ast_mutex_unlock(&p->lock);
00528 if (ast) {
00529 ast_channel_unlock(ast);
00530 }
00531 usleep(1);
00532 if (ast) {
00533 ast_channel_lock(ast);
00534 }
00535 ast_mutex_lock(&p->lock);
00536 }
00537 if (p->owner) {
00538 pbx_builtin_setvar_helper(p->owner, "CHANLOCALSTATUS", status);
00539 ast_channel_unlock(p->owner);
00540 }
00541 }
00542 p->chan = NULL;
00543 ast_clear_flag(p, LOCAL_LAUNCHED_PBX);
00544 ast_module_user_remove(p->u_chan);
00545 } else {
00546 p->owner = NULL;
00547 ast_module_user_remove(p->u_owner);
00548 if (p->chan) {
00549 ast_queue_hangup(p->chan);
00550 }
00551 }
00552
00553 ast->tech_pvt = NULL;
00554
00555 if (!p->owner && !p->chan) {
00556
00557 glaredetect = ast_test_flag(p, LOCAL_GLARE_DETECT);
00558
00559
00560 if (glaredetect)
00561 ast_set_flag(p, LOCAL_CANCEL_QUEUE);
00562 ast_mutex_unlock(&p->lock);
00563
00564 AST_LIST_LOCK(&locals);
00565 AST_LIST_REMOVE(&locals, p, list);
00566 AST_LIST_UNLOCK(&locals);
00567
00568 ast_mutex_lock(&p->lock);
00569 ast_mutex_unlock(&p->lock);
00570
00571 if (!glaredetect) {
00572 p = local_pvt_destroy(p);
00573 }
00574 return 0;
00575 }
00576 if (p->chan && !ast_test_flag(p, LOCAL_LAUNCHED_PBX))
00577
00578 ochan = p->chan;
00579 else
00580 res = local_queue_frame(p, isoutbound, &f, NULL, 1);
00581 if (!res)
00582 ast_mutex_unlock(&p->lock);
00583 if (ochan)
00584 ast_hangup(ochan);
00585 return 0;
00586 }
00587
00588
00589 static struct local_pvt *local_alloc(const char *data, int format)
00590 {
00591 struct local_pvt *tmp = NULL;
00592 char *c = NULL, *opts = NULL;
00593
00594 if (!(tmp = ast_calloc(1, sizeof(*tmp))))
00595 return NULL;
00596
00597
00598 ast_mutex_init(&tmp->lock);
00599 ast_copy_string(tmp->exten, data, sizeof(tmp->exten));
00600
00601
00602 if ((opts = strchr(tmp->exten, '/'))) {
00603 *opts++ = '\0';
00604 if (strchr(opts, 'n'))
00605 ast_set_flag(tmp, LOCAL_NO_OPTIMIZATION);
00606 }
00607
00608
00609 if ((c = strchr(tmp->exten, '@')))
00610 *c++ = '\0';
00611
00612 ast_copy_string(tmp->context, c ? c : "default", sizeof(tmp->context));
00613
00614 tmp->reqformat = format;
00615
00616 if (!ast_exists_extension(NULL, tmp->context, tmp->exten, 1, NULL)) {
00617 ast_log(LOG_NOTICE, "No such extension/context %s@%s creating local channel\n", tmp->exten, tmp->context);
00618 tmp = local_pvt_destroy(tmp);
00619 } else {
00620
00621 AST_LIST_LOCK(&locals);
00622 AST_LIST_INSERT_HEAD(&locals, tmp, list);
00623 AST_LIST_UNLOCK(&locals);
00624 }
00625
00626 return tmp;
00627 }
00628
00629
00630 static struct ast_channel *local_new(struct local_pvt *p, int state)
00631 {
00632 struct ast_channel *tmp = NULL, *tmp2 = NULL;
00633 int randnum = ast_random() & 0xffff, fmt = 0;
00634 const char *t;
00635 int ama;
00636
00637
00638
00639 if (p->owner && p->owner->accountcode)
00640 t = p->owner->accountcode;
00641 else
00642 t = "";
00643
00644 if (p->owner)
00645 ama = p->owner->amaflags;
00646 else
00647 ama = 0;
00648 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))
00649 || !(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))) {
00650 if (tmp)
00651 ast_channel_free(tmp);
00652 if (tmp2)
00653 ast_channel_free(tmp2);
00654 ast_log(LOG_WARNING, "Unable to allocate channel structure(s)\n");
00655 return NULL;
00656 }
00657
00658 tmp2->tech = tmp->tech = &local_tech;
00659
00660 tmp->nativeformats = p->reqformat;
00661 tmp2->nativeformats = p->reqformat;
00662
00663
00664 fmt = ast_best_codec(p->reqformat);
00665 tmp->writeformat = fmt;
00666 tmp2->writeformat = fmt;
00667 tmp->rawwriteformat = fmt;
00668 tmp2->rawwriteformat = fmt;
00669 tmp->readformat = fmt;
00670 tmp2->readformat = fmt;
00671 tmp->rawreadformat = fmt;
00672 tmp2->rawreadformat = fmt;
00673
00674 tmp->tech_pvt = p;
00675 tmp2->tech_pvt = p;
00676
00677 p->owner = tmp;
00678 p->chan = tmp2;
00679 p->u_owner = ast_module_user_add(p->owner);
00680 p->u_chan = ast_module_user_add(p->chan);
00681
00682 ast_copy_string(tmp->context, p->context, sizeof(tmp->context));
00683 ast_copy_string(tmp2->context, p->context, sizeof(tmp2->context));
00684 ast_copy_string(tmp2->exten, p->exten, sizeof(tmp->exten));
00685 tmp->priority = 1;
00686 tmp2->priority = 1;
00687
00688 return tmp;
00689 }
00690
00691
00692 static struct ast_channel *local_request(const char *type, int format, void *data, int *cause)
00693 {
00694 struct local_pvt *p = NULL;
00695 struct ast_channel *chan = NULL;
00696
00697
00698 if ((p = local_alloc(data, format))) {
00699 if (!(chan = local_new(p, AST_STATE_DOWN))) {
00700 AST_LIST_LOCK(&locals);
00701 AST_LIST_REMOVE(&locals, p, list);
00702 AST_LIST_UNLOCK(&locals);
00703 p = local_pvt_destroy(p);
00704 }
00705 }
00706
00707 return chan;
00708 }
00709
00710
00711 static int locals_show(int fd, int argc, char **argv)
00712 {
00713 struct local_pvt *p = NULL;
00714
00715 if (argc != 3)
00716 return RESULT_SHOWUSAGE;
00717
00718 AST_LIST_LOCK(&locals);
00719 if (!AST_LIST_EMPTY(&locals)) {
00720 AST_LIST_TRAVERSE(&locals, p, list) {
00721 ast_mutex_lock(&p->lock);
00722 ast_cli(fd, "%s -- %s@%s\n", p->owner ? p->owner->name : "<unowned>", p->exten, p->context);
00723 ast_mutex_unlock(&p->lock);
00724 }
00725 } else
00726 ast_cli(fd, "No local channels in use\n");
00727 AST_LIST_UNLOCK(&locals);
00728
00729 return RESULT_SUCCESS;
00730 }
00731
00732 static char show_locals_usage[] =
00733 "Usage: local show channels\n"
00734 " Provides summary information on active local proxy channels.\n";
00735
00736 static struct ast_cli_entry cli_local[] = {
00737 { { "local", "show", "channels", NULL },
00738 locals_show, "List status of local channels",
00739 show_locals_usage },
00740 };
00741
00742
00743 static int load_module(void)
00744 {
00745
00746 if (ast_channel_register(&local_tech)) {
00747 ast_log(LOG_ERROR, "Unable to register channel class 'Local'\n");
00748 return -1;
00749 }
00750 ast_cli_register_multiple(cli_local, sizeof(cli_local) / sizeof(struct ast_cli_entry));
00751 return 0;
00752 }
00753
00754
00755 static int unload_module(void)
00756 {
00757 struct local_pvt *p = NULL;
00758
00759
00760 ast_cli_unregister_multiple(cli_local, sizeof(cli_local) / sizeof(struct ast_cli_entry));
00761 ast_channel_unregister(&local_tech);
00762 if (!AST_LIST_LOCK(&locals)) {
00763
00764 AST_LIST_TRAVERSE(&locals, p, list) {
00765 if (p->owner)
00766 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
00767 }
00768 AST_LIST_UNLOCK(&locals);
00769 } else {
00770 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
00771 return -1;
00772 }
00773 return 0;
00774 }
00775
00776 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Local Proxy Channel (Note: used internally by other modules)");