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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 116038 $")
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 ast_channel_unlock(us);
00190 }
00191 usleep(1);
00192 if (us && us_locked) {
00193 ast_channel_lock(us);
00194 }
00195 ast_mutex_lock(&p->lock);
00196 other = isoutbound ? p->owner : p->chan;
00197 }
00198
00199 if (other) {
00200 ast_queue_frame(other, f);
00201 ast_channel_unlock(other);
00202 }
00203
00204 ast_clear_flag(p, LOCAL_GLARE_DETECT);
00205
00206 return 0;
00207 }
00208
00209 static int local_answer(struct ast_channel *ast)
00210 {
00211 struct local_pvt *p = ast->tech_pvt;
00212 int isoutbound;
00213 int res = -1;
00214
00215 if (!p)
00216 return -1;
00217
00218 ast_mutex_lock(&p->lock);
00219 isoutbound = IS_OUTBOUND(ast, p);
00220 if (isoutbound) {
00221
00222 struct ast_frame answer = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER };
00223 res = local_queue_frame(p, isoutbound, &answer, ast, 1);
00224 } else
00225 ast_log(LOG_WARNING, "Huh? Local is being asked to answer?\n");
00226 if (!res)
00227 ast_mutex_unlock(&p->lock);
00228 return res;
00229 }
00230
00231 static void check_bridge(struct local_pvt *p, int isoutbound)
00232 {
00233 struct ast_channel_monitor *tmp;
00234 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)))
00235 return;
00236
00237
00238
00239
00240
00241
00242 if (isoutbound && p->chan->_bridge && AST_LIST_EMPTY(&p->owner->readq)) {
00243
00244
00245
00246
00247 if (!ast_mutex_trylock(&(p->chan->_bridge)->lock)) {
00248 if (!p->chan->_bridge->_softhangup) {
00249 if (!ast_mutex_trylock(&p->owner->lock)) {
00250 if (!p->owner->_softhangup) {
00251 if(p->owner->monitor && !p->chan->_bridge->monitor) {
00252
00253
00254
00255
00256
00257 tmp = p->owner->monitor;
00258 p->owner->monitor = p->chan->_bridge->monitor;
00259 p->chan->_bridge->monitor = tmp;
00260 }
00261 ast_channel_masquerade(p->owner, p->chan->_bridge);
00262 ast_set_flag(p, LOCAL_ALREADY_MASQED);
00263 }
00264 ast_mutex_unlock(&p->owner->lock);
00265 }
00266 ast_mutex_unlock(&(p->chan->_bridge)->lock);
00267 }
00268 }
00269
00270
00271
00272
00273 #if 0
00274 } else if (!isoutbound && p->owner && p->owner->_bridge && p->chan && AST_LIST_EMPTY(&p->chan->readq)) {
00275
00276 if (!ast_mutex_trylock(&(p->owner->_bridge)->lock)) {
00277 if (!p->owner->_bridge->_softhangup) {
00278 if (!ast_mutex_trylock(&p->chan->lock)) {
00279 if (!p->chan->_softhangup) {
00280 ast_channel_masquerade(p->chan, p->owner->_bridge);
00281 ast_set_flag(p, LOCAL_ALREADY_MASQED);
00282 }
00283 ast_mutex_unlock(&p->chan->lock);
00284 }
00285 }
00286 ast_mutex_unlock(&(p->owner->_bridge)->lock);
00287 }
00288 #endif
00289 }
00290 }
00291
00292 static struct ast_frame *local_read(struct ast_channel *ast)
00293 {
00294 return &ast_null_frame;
00295 }
00296
00297 static int local_write(struct ast_channel *ast, struct ast_frame *f)
00298 {
00299 struct local_pvt *p = ast->tech_pvt;
00300 int res = -1;
00301 int isoutbound;
00302
00303 if (!p)
00304 return -1;
00305
00306
00307 ast_mutex_lock(&p->lock);
00308 isoutbound = IS_OUTBOUND(ast, p);
00309 if (f && (f->frametype == AST_FRAME_VOICE || f->frametype == AST_FRAME_VIDEO))
00310 check_bridge(p, isoutbound);
00311 if (!ast_test_flag(p, LOCAL_ALREADY_MASQED))
00312 res = local_queue_frame(p, isoutbound, f, ast, 1);
00313 else {
00314 if (option_debug)
00315 ast_log(LOG_DEBUG, "Not posting to queue since already masked on '%s'\n", ast->name);
00316 res = 0;
00317 }
00318 if (!res)
00319 ast_mutex_unlock(&p->lock);
00320 return res;
00321 }
00322
00323 static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
00324 {
00325 struct local_pvt *p = newchan->tech_pvt;
00326
00327 if (!p)
00328 return -1;
00329
00330 ast_mutex_lock(&p->lock);
00331
00332 if ((p->owner != oldchan) && (p->chan != oldchan)) {
00333 ast_log(LOG_WARNING, "Old channel wasn't %p but was %p/%p\n", oldchan, p->owner, p->chan);
00334 ast_mutex_unlock(&p->lock);
00335 return -1;
00336 }
00337 if (p->owner == oldchan)
00338 p->owner = newchan;
00339 else
00340 p->chan = newchan;
00341 ast_mutex_unlock(&p->lock);
00342 return 0;
00343 }
00344
00345 static int local_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
00346 {
00347 struct local_pvt *p = ast->tech_pvt;
00348 int res = 0;
00349 struct ast_frame f = { AST_FRAME_CONTROL, };
00350 int isoutbound;
00351
00352 if (!p)
00353 return -1;
00354
00355
00356 if (condition == AST_CONTROL_HOLD) {
00357 ast_moh_start(ast, data, NULL);
00358 } else if (condition == AST_CONTROL_UNHOLD) {
00359 ast_moh_stop(ast);
00360 } else {
00361
00362 ast_mutex_lock(&p->lock);
00363 isoutbound = IS_OUTBOUND(ast, p);
00364 f.subclass = condition;
00365 f.data = (void*)data;
00366 f.datalen = datalen;
00367 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 1)))
00368 ast_mutex_unlock(&p->lock);
00369 }
00370
00371 return res;
00372 }
00373
00374 static int local_digit_begin(struct ast_channel *ast, char digit)
00375 {
00376 struct local_pvt *p = ast->tech_pvt;
00377 int res = -1;
00378 struct ast_frame f = { AST_FRAME_DTMF_BEGIN, };
00379 int isoutbound;
00380
00381 if (!p)
00382 return -1;
00383
00384 ast_mutex_lock(&p->lock);
00385 isoutbound = IS_OUTBOUND(ast, p);
00386 f.subclass = digit;
00387 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00388 ast_mutex_unlock(&p->lock);
00389
00390 return res;
00391 }
00392
00393 static int local_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
00394 {
00395 struct local_pvt *p = ast->tech_pvt;
00396 int res = -1;
00397 struct ast_frame f = { AST_FRAME_DTMF_END, };
00398 int isoutbound;
00399
00400 if (!p)
00401 return -1;
00402
00403 ast_mutex_lock(&p->lock);
00404 isoutbound = IS_OUTBOUND(ast, p);
00405 f.subclass = digit;
00406 f.len = duration;
00407 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00408 ast_mutex_unlock(&p->lock);
00409
00410 return res;
00411 }
00412
00413 static int local_sendtext(struct ast_channel *ast, const char *text)
00414 {
00415 struct local_pvt *p = ast->tech_pvt;
00416 int res = -1;
00417 struct ast_frame f = { AST_FRAME_TEXT, };
00418 int isoutbound;
00419
00420 if (!p)
00421 return -1;
00422
00423 ast_mutex_lock(&p->lock);
00424 isoutbound = IS_OUTBOUND(ast, p);
00425 f.data = (char *) text;
00426 f.datalen = strlen(text) + 1;
00427 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00428 ast_mutex_unlock(&p->lock);
00429 return res;
00430 }
00431
00432 static int local_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
00433 {
00434 struct local_pvt *p = ast->tech_pvt;
00435 int res = -1;
00436 struct ast_frame f = { AST_FRAME_HTML, };
00437 int isoutbound;
00438
00439 if (!p)
00440 return -1;
00441
00442 ast_mutex_lock(&p->lock);
00443 isoutbound = IS_OUTBOUND(ast, p);
00444 f.subclass = subclass;
00445 f.data = (char *)data;
00446 f.datalen = datalen;
00447 if (!(res = local_queue_frame(p, isoutbound, &f, ast, 0)))
00448 ast_mutex_unlock(&p->lock);
00449 return res;
00450 }
00451
00452
00453
00454 static int local_call(struct ast_channel *ast, char *dest, int timeout)
00455 {
00456 struct local_pvt *p = ast->tech_pvt;
00457 int res;
00458 struct ast_var_t *varptr = NULL, *new;
00459 size_t len, namelen;
00460
00461 if (!p)
00462 return -1;
00463
00464 ast_mutex_lock(&p->lock);
00465
00466
00467
00468
00469
00470 p->chan->cid.cid_num = ast_strdup(p->owner->cid.cid_num);
00471 p->chan->cid.cid_name = ast_strdup(p->owner->cid.cid_name);
00472 p->chan->cid.cid_rdnis = ast_strdup(p->owner->cid.cid_rdnis);
00473 p->chan->cid.cid_ani = ast_strdup(p->owner->cid.cid_ani);
00474 p->chan->cid.cid_pres = p->owner->cid.cid_pres;
00475 ast_string_field_set(p->chan, language, p->owner->language);
00476 ast_string_field_set(p->chan, accountcode, p->owner->accountcode);
00477 ast_cdr_update(p->chan);
00478 p->chan->cdrflags = p->owner->cdrflags;
00479
00480
00481
00482 AST_LIST_TRAVERSE(&p->owner->varshead, varptr, entries) {
00483 namelen = strlen(varptr->name);
00484 len = sizeof(struct ast_var_t) + namelen + strlen(varptr->value) + 2;
00485 if ((new = ast_calloc(1, len))) {
00486 memcpy(new, varptr, len);
00487 new->value = &(new->name[0]) + namelen + 1;
00488 AST_LIST_INSERT_TAIL(&p->chan->varshead, new, entries);
00489 }
00490 }
00491 ast_channel_datastore_inherit(p->owner, p->chan);
00492
00493
00494 if (!(res = ast_pbx_start(p->chan)))
00495 ast_set_flag(p, LOCAL_LAUNCHED_PBX);
00496
00497 ast_mutex_unlock(&p->lock);
00498 return res;
00499 }
00500
00501
00502 static int local_hangup(struct ast_channel *ast)
00503 {
00504 struct local_pvt *p = ast->tech_pvt;
00505 int isoutbound;
00506 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP };
00507 struct ast_channel *ochan = NULL;
00508 int glaredetect = 0, res = 0;
00509
00510 if (!p)
00511 return -1;
00512
00513 ast_mutex_lock(&p->lock);
00514 isoutbound = IS_OUTBOUND(ast, p);
00515 if (isoutbound) {
00516 const char *status = pbx_builtin_getvar_helper(p->chan, "DIALSTATUS");
00517 if ((status) && (p->owner)) {
00518
00519 while (p->owner && ast_channel_trylock(p->owner)) {
00520 ast_mutex_unlock(&p->lock);
00521 if (ast) {
00522 ast_channel_unlock(ast);
00523 }
00524 usleep(1);
00525 if (ast) {
00526 ast_channel_lock(ast);
00527 }
00528 ast_mutex_lock(&p->lock);
00529 }
00530 if (p->owner) {
00531 pbx_builtin_setvar_helper(p->owner, "CHANLOCALSTATUS", status);
00532 ast_channel_unlock(p->owner);
00533 }
00534 }
00535 p->chan = NULL;
00536 ast_clear_flag(p, LOCAL_LAUNCHED_PBX);
00537 ast_module_user_remove(p->u_chan);
00538 } else {
00539 p->owner = NULL;
00540 ast_module_user_remove(p->u_owner);
00541 }
00542
00543 ast->tech_pvt = NULL;
00544
00545 if (!p->owner && !p->chan) {
00546
00547 glaredetect = ast_test_flag(p, LOCAL_GLARE_DETECT);
00548
00549
00550 if (glaredetect)
00551 ast_set_flag(p, LOCAL_CANCEL_QUEUE);
00552 ast_mutex_unlock(&p->lock);
00553
00554 AST_LIST_LOCK(&locals);
00555 AST_LIST_REMOVE(&locals, p, list);
00556 AST_LIST_UNLOCK(&locals);
00557
00558 ast_mutex_lock(&p->lock);
00559 ast_mutex_unlock(&p->lock);
00560
00561 if (!glaredetect) {
00562 p = local_pvt_destroy(p);
00563 }
00564 return 0;
00565 }
00566 if (p->chan && !ast_test_flag(p, LOCAL_LAUNCHED_PBX))
00567
00568 ochan = p->chan;
00569 else
00570 res = local_queue_frame(p, isoutbound, &f, NULL, 1);
00571 if (!res)
00572 ast_mutex_unlock(&p->lock);
00573 if (ochan)
00574 ast_hangup(ochan);
00575 return 0;
00576 }
00577
00578
00579 static struct local_pvt *local_alloc(const char *data, int format)
00580 {
00581 struct local_pvt *tmp = NULL;
00582 char *c = NULL, *opts = NULL;
00583
00584 if (!(tmp = ast_calloc(1, sizeof(*tmp))))
00585 return NULL;
00586
00587
00588 ast_mutex_init(&tmp->lock);
00589 ast_copy_string(tmp->exten, data, sizeof(tmp->exten));
00590
00591
00592 if ((opts = strchr(tmp->exten, '/'))) {
00593 *opts++ = '\0';
00594 if (strchr(opts, 'n'))
00595 ast_set_flag(tmp, LOCAL_NO_OPTIMIZATION);
00596 }
00597
00598
00599 if ((c = strchr(tmp->exten, '@')))
00600 *c++ = '\0';
00601
00602 ast_copy_string(tmp->context, c ? c : "default", sizeof(tmp->context));
00603
00604 tmp->reqformat = format;
00605
00606 if (!ast_exists_extension(NULL, tmp->context, tmp->exten, 1, NULL)) {
00607 ast_log(LOG_NOTICE, "No such extension/context %s@%s creating local channel\n", tmp->exten, tmp->context);
00608 tmp = local_pvt_destroy(tmp);
00609 } else {
00610
00611 AST_LIST_LOCK(&locals);
00612 AST_LIST_INSERT_HEAD(&locals, tmp, list);
00613 AST_LIST_UNLOCK(&locals);
00614 }
00615
00616 return tmp;
00617 }
00618
00619
00620 static struct ast_channel *local_new(struct local_pvt *p, int state)
00621 {
00622 struct ast_channel *tmp = NULL, *tmp2 = NULL;
00623 int randnum = ast_random() & 0xffff, fmt = 0;
00624 const char *t;
00625 int ama;
00626
00627
00628
00629 if (p->owner && p->owner->accountcode)
00630 t = p->owner->accountcode;
00631 else
00632 t = "";
00633
00634 if (p->owner)
00635 ama = p->owner->amaflags;
00636 else
00637 ama = 0;
00638 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))
00639 || !(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))) {
00640 if (tmp)
00641 ast_channel_free(tmp);
00642 if (tmp2)
00643 ast_channel_free(tmp2);
00644 ast_log(LOG_WARNING, "Unable to allocate channel structure(s)\n");
00645 return NULL;
00646 }
00647
00648 tmp2->tech = tmp->tech = &local_tech;
00649
00650 tmp->nativeformats = p->reqformat;
00651 tmp2->nativeformats = p->reqformat;
00652
00653
00654 fmt = ast_best_codec(p->reqformat);
00655 tmp->writeformat = fmt;
00656 tmp2->writeformat = fmt;
00657 tmp->rawwriteformat = fmt;
00658 tmp2->rawwriteformat = fmt;
00659 tmp->readformat = fmt;
00660 tmp2->readformat = fmt;
00661 tmp->rawreadformat = fmt;
00662 tmp2->rawreadformat = fmt;
00663
00664 tmp->tech_pvt = p;
00665 tmp2->tech_pvt = p;
00666
00667 p->owner = tmp;
00668 p->chan = tmp2;
00669 p->u_owner = ast_module_user_add(p->owner);
00670 p->u_chan = ast_module_user_add(p->chan);
00671
00672 ast_copy_string(tmp->context, p->context, sizeof(tmp->context));
00673 ast_copy_string(tmp2->context, p->context, sizeof(tmp2->context));
00674 ast_copy_string(tmp2->exten, p->exten, sizeof(tmp->exten));
00675 tmp->priority = 1;
00676 tmp2->priority = 1;
00677
00678 return tmp;
00679 }
00680
00681
00682 static struct ast_channel *local_request(const char *type, int format, void *data, int *cause)
00683 {
00684 struct local_pvt *p = NULL;
00685 struct ast_channel *chan = NULL;
00686
00687
00688 if ((p = local_alloc(data, format))) {
00689 if (!(chan = local_new(p, AST_STATE_DOWN))) {
00690 AST_LIST_LOCK(&locals);
00691 AST_LIST_REMOVE(&locals, p, list);
00692 AST_LIST_UNLOCK(&locals);
00693 p = local_pvt_destroy(p);
00694 }
00695 }
00696
00697 return chan;
00698 }
00699
00700
00701 static int locals_show(int fd, int argc, char **argv)
00702 {
00703 struct local_pvt *p = NULL;
00704
00705 if (argc != 3)
00706 return RESULT_SHOWUSAGE;
00707
00708 AST_LIST_LOCK(&locals);
00709 if (!AST_LIST_EMPTY(&locals)) {
00710 AST_LIST_TRAVERSE(&locals, p, list) {
00711 ast_mutex_lock(&p->lock);
00712 ast_cli(fd, "%s -- %s@%s\n", p->owner ? p->owner->name : "<unowned>", p->exten, p->context);
00713 ast_mutex_unlock(&p->lock);
00714 }
00715 } else
00716 ast_cli(fd, "No local channels in use\n");
00717 AST_LIST_UNLOCK(&locals);
00718
00719 return RESULT_SUCCESS;
00720 }
00721
00722 static char show_locals_usage[] =
00723 "Usage: local show channels\n"
00724 " Provides summary information on active local proxy channels.\n";
00725
00726 static struct ast_cli_entry cli_local[] = {
00727 { { "local", "show", "channels", NULL },
00728 locals_show, "List status of local channels",
00729 show_locals_usage },
00730 };
00731
00732
00733 static int load_module(void)
00734 {
00735
00736 if (ast_channel_register(&local_tech)) {
00737 ast_log(LOG_ERROR, "Unable to register channel class 'Local'\n");
00738 return -1;
00739 }
00740 ast_cli_register_multiple(cli_local, sizeof(cli_local) / sizeof(struct ast_cli_entry));
00741 return 0;
00742 }
00743
00744
00745 static int unload_module(void)
00746 {
00747 struct local_pvt *p = NULL;
00748
00749
00750 ast_cli_unregister_multiple(cli_local, sizeof(cli_local) / sizeof(struct ast_cli_entry));
00751 ast_channel_unregister(&local_tech);
00752 if (!AST_LIST_LOCK(&locals)) {
00753
00754 AST_LIST_TRAVERSE(&locals, p, list) {
00755 if (p->owner)
00756 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
00757 }
00758 AST_LIST_UNLOCK(&locals);
00759 AST_LIST_HEAD_DESTROY(&locals);
00760 } else {
00761 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
00762 return -1;
00763 }
00764 return 0;
00765 }
00766
00767 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Local Proxy Channel (Note: used internally by other modules)");