Fix teeny typo
[asterisk/asterisk.git] / manager.c
1 /*
2  * Asterisk -- A telephony toolkit for Linux.
3  *
4  * Channel Management and more
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 <stdio.h>
15 #include <stdlib.h>
16 #include <pthread.h>
17 #include <string.h>
18 #include <sys/time.h>
19 #include <sys/types.h>
20 #include <netdb.h>
21 #include <sys/socket.h>
22 #include <netinet/in.h>
23 #include <netinet/tcp.h>
24 #include <arpa/inet.h>
25 #include <signal.h>
26 #include <errno.h>
27 #include <unistd.h>
28 #include <asterisk/channel.h>
29 #include <asterisk/file.h>
30 #include <asterisk/manager.h>
31 #include <asterisk/config.h>
32 #include <asterisk/lock.h>
33 #include <asterisk/logger.h>
34 #include <asterisk/options.h>
35 #include <asterisk/cli.h>
36 #include <asterisk/app.h>
37 #include <asterisk/pbx.h>
38 #include <asterisk/md5.h>
39 #include <asterisk/acl.h>
40
41 static int enabled = 0;
42 static int portno = DEFAULT_MANAGER_PORT;
43 static int asock = -1;
44 static pthread_t t;
45 static pthread_mutex_t sessionlock = AST_MUTEX_INITIALIZER;
46
47 static struct permalias {
48         int num;
49         char *label;
50 } perms[] = {
51         { EVENT_FLAG_SYSTEM, "system" },
52         { EVENT_FLAG_CALL, "call" },
53         { EVENT_FLAG_LOG, "log" },
54         { EVENT_FLAG_VERBOSE, "verbose" },
55         { EVENT_FLAG_COMMAND, "command" },
56         { EVENT_FLAG_AGENT, "agent" },
57         { EVENT_FLAG_USER, "user" },
58         { -1, "all" },
59 };
60
61 static struct mansession *sessions = NULL;
62 static struct manager_action *first_action = NULL;
63 static pthread_mutex_t actionlock = AST_MUTEX_INITIALIZER;
64
65 static int handle_showmancmds(int fd, int argc, char *argv[])
66 {
67         struct manager_action *cur = first_action;
68
69         ast_pthread_mutex_lock(&actionlock);
70         while(cur) { /* Walk the list of actions */
71                 ast_cli(fd, "\t%s  %s\r\n",cur->action, cur->synopsis);
72                 cur = cur->next;
73         }
74
75         ast_pthread_mutex_unlock(&actionlock);
76         return RESULT_SUCCESS;
77 }
78
79 static int handle_showmanconn(int fd, int argc, char *argv[])
80 {
81         struct mansession *s;
82
83         ast_pthread_mutex_lock(&sessionlock);
84         s = sessions;
85         ast_cli(fd, "  Username\tIP Address\n");
86         while(s) {
87                 ast_cli(fd, "  %s\t\t%s\r\n",s->username, inet_ntoa(s->sin.sin_addr));
88                 s = s->next;
89         }
90
91         ast_pthread_mutex_unlock(&sessionlock);
92         return RESULT_SUCCESS;
93 }
94
95 static char showmancmds_help[] = 
96 "Usage: show manager commands\n"
97 "       Prints a listing of all the available manager commands.\n";
98
99 static char showmanconn_help[] = 
100 "Usage: show manager connected\n"
101 "       Prints a listing of the users that are connected to the\n"
102 "manager interface.\n";
103
104 static struct ast_cli_entry show_mancmds_cli =
105         { { "show", "manager", "commands", NULL },
106         handle_showmancmds, "Show manager commands", showmancmds_help };
107
108 static struct ast_cli_entry show_manconn_cli =
109         { { "show", "manager", "connected", NULL },
110         handle_showmanconn, "Show connected manager users", showmanconn_help };
111
112 static void destroy_session(struct mansession *s)
113 {
114         struct mansession *cur, *prev = NULL;
115         ast_pthread_mutex_lock(&sessionlock);
116         cur = sessions;
117         while(cur) {
118                 if (cur == s)
119                         break;
120                 prev = cur;
121                 cur = cur->next;
122         }
123         if (cur) {
124                 if (prev)
125                         prev->next = cur->next;
126                 else
127                         sessions = cur->next;
128                 if (s->fd > -1)
129                         close(s->fd);
130                 free(s);
131         } else
132                 ast_log(LOG_WARNING, "Trying to delete non-existant session %p?\n", s);
133         ast_pthread_mutex_unlock(&sessionlock);
134         
135 }
136
137 char *astman_get_header(struct message *m, char *var)
138 {
139         char cmp[80];
140         int x;
141         snprintf(cmp, sizeof(cmp), "%s: ", var);
142         for (x=0;x<m->hdrcount;x++)
143                 if (!strncasecmp(cmp, m->headers[x], strlen(cmp)))
144                         return m->headers[x] + strlen(cmp);
145         return "";
146 }
147
148 void astman_send_error(struct mansession *s, char *error)
149 {
150         ast_pthread_mutex_lock(&s->lock);
151         ast_cli(s->fd, "Response: Error\r\n");
152         ast_cli(s->fd, "Message: %s\r\n\r\n", error);
153         ast_pthread_mutex_unlock(&s->lock);
154 }
155
156 void astman_send_response(struct mansession *s, char *resp, char *msg)
157 {
158         ast_pthread_mutex_lock(&s->lock);
159         ast_cli(s->fd, "Response: %s\r\n", resp);
160         if (msg)
161                 ast_cli(s->fd, "Message: %s\r\n\r\n", msg);
162         else
163                 ast_cli(s->fd, "\r\n");
164         ast_pthread_mutex_unlock(&s->lock);
165 }
166
167 void astman_send_ack(struct mansession *s, char *msg)
168 {
169         astman_send_response(s, "Success", msg);
170 }
171
172 static int get_perm(char *instr)
173 {
174         char tmp[256];
175         char *c;
176         int x;
177         int ret = 0;
178         char *stringp=NULL;
179         if (!instr)
180                 return 0;
181         strncpy(tmp, instr, sizeof(tmp) - 1);
182         stringp=tmp;
183         c = strsep(&stringp, ",");
184         while(c) {
185                 for (x=0;x<sizeof(perms) / sizeof(perms[0]);x++) {
186                         if (!strcasecmp(perms[x].label, c)) 
187                                 ret |= perms[x].num;
188                 }
189                 c = strsep(&stringp, ",");
190         }
191         return ret;
192 }
193
194 static int authenticate(struct mansession *s, struct message *m)
195 {
196         struct ast_config *cfg;
197         char *cat;
198         char *user = astman_get_header(m, "Username");
199         char *pass = astman_get_header(m, "Secret");
200         char *authtype = astman_get_header(m, "AuthType");
201         char *key = astman_get_header(m, "Key");
202
203         cfg = ast_load("manager.conf");
204         if (!cfg)
205                 return -1;
206         cat = ast_category_browse(cfg, NULL);
207         while(cat) {
208                 if (strcasecmp(cat, "general")) {
209                         /* This is a user */
210                         if (!strcasecmp(cat, user)) {
211                                 struct ast_variable *v;
212                                 struct ast_ha *ha = NULL;
213                                 char *password = NULL;
214                                 v = ast_variable_browse(cfg, cat);
215                                 while (v) {
216                                         if (!strcasecmp(v->name, "secret")) {
217                                                 password = v->value;
218                                         } else if (!strcasecmp(v->name, "permit") ||
219                                                    !strcasecmp(v->name, "deny")) {
220                                                         ha = ast_append_ha(v->name, v->value, ha);
221                                         }                                               
222                                         v = v->next;
223                                 }
224                                 if (ha && !ast_apply_ha(ha, &(s->sin))) {
225                                         ast_log(LOG_NOTICE, "%s failed to pass IP ACL as '%s'\n", inet_ntoa(s->sin.sin_addr), user);
226                                         ast_free_ha(ha);
227                                         ast_destroy(cfg);
228                                         return -1;
229                                 } else if (ha)
230                                         ast_free_ha(ha);
231                                 if (!strcasecmp(authtype, "MD5")) {
232                                         if (key && strlen(key) && s->challenge) {
233                                                 int x;
234                                                 int len=0;
235                                                 char md5key[256] = "";
236                                                 struct MD5Context md5;
237                                                 unsigned char digest[16];
238                                                 MD5Init(&md5);
239                                                 MD5Update(&md5, s->challenge, strlen(s->challenge));
240                                                 MD5Update(&md5, password, strlen(password));
241                                                 MD5Final(digest, &md5);
242                                                 for (x=0;x<16;x++)
243                                                         len += sprintf(md5key + len, "%2.2x", digest[x]);
244                                                 if (!strcmp(md5key, key))
245                                                         break;
246                                                 else {
247                                                         ast_destroy(cfg);
248                                                         return -1;
249                                                 }
250                                         }
251                                 } else if (password && !strcasecmp(password, pass)) {
252                                         break;
253                                 } else {
254                                         ast_log(LOG_NOTICE, "%s failed to authenticate as '%s'\n", inet_ntoa(s->sin.sin_addr), user);
255                                         ast_destroy(cfg);
256                                         return -1;
257                                 }       
258                         }
259                 }
260                 cat = ast_category_browse(cfg, cat);
261         }
262         if (cat) {
263                 strncpy(s->username, cat, sizeof(s->username) - 1);
264                 s->readperm = get_perm(ast_variable_retrieve(cfg, cat, "read"));
265                 s->writeperm = get_perm(ast_variable_retrieve(cfg, cat, "write"));
266                 ast_destroy(cfg);
267                 return 0;
268         }
269         ast_log(LOG_NOTICE, "%s tried to authenticate with non-existant user '%s'\n", inet_ntoa(s->sin.sin_addr), user);
270         ast_destroy(cfg);
271         return -1;
272 }
273
274 static int action_ping(struct mansession *s, struct message *m)
275 {
276         astman_send_response(s, "Pong", NULL);
277         return 0;
278 }
279
280 static int action_logoff(struct mansession *s, struct message *m)
281 {
282         astman_send_response(s, "Goodbye", "Thanks for all the fish.");
283         return -1;
284 }
285
286 static int action_hangup(struct mansession *s, struct message *m)
287 {
288         struct ast_channel *c = NULL;
289         char *name = astman_get_header(m, "Channel");
290         if (!strlen(name)) {
291                 astman_send_error(s, "No channel specified");
292                 return 0;
293         }
294         c = ast_channel_walk(NULL);
295         while(c) {
296                 if (!strcasecmp(c->name, name)) {
297                         break;
298                 }
299                 c = ast_channel_walk(c);
300         }
301         if (!c) {
302                 astman_send_error(s, "No such channel");
303                 return 0;
304         }
305         ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
306         astman_send_ack(s, "Channel Hungup");
307         return 0;
308 }
309
310 static int action_status(struct mansession *s, struct message *m)
311 {
312         struct ast_channel *c;
313         char bridge[256];
314         astman_send_ack(s, "Channel status will follow");
315         c = ast_channel_walk(NULL);
316         while(c) {
317                 if (c->bridge)
318                         snprintf(bridge, sizeof(bridge), "Link: %s\r\n", c->bridge->name);
319                 else
320                         strcpy(bridge, "");
321                 if (c->pbx) {
322                         ast_cli(s->fd,
323                         "Event: Status\r\n"
324                         "Channel: %s\r\n"
325                         "CallerID: %s\r\n"
326                         "State: %s\r\n"
327                         "Context: %s\r\n"
328                         "Extension: %s\r\n"
329                         "Priority: %d\r\n"
330                         "%s"
331                         "Uniqueid: %s\r\n"
332                         "\r\n",
333                         c->name, c->callerid ? c->callerid : "<unknown>", 
334                         ast_state2str(c->_state), c->context,
335                         c->exten, c->priority, bridge, c->uniqueid);
336                 } else {
337                         ast_cli(s->fd,
338                         "Event: Status\r\n"
339                         "Channel: %s\r\n"
340                         "CallerID: %s\r\n"
341                         "State: %s\r\n"
342                         "%s"
343                         "\r\n"
344                         "Uniqueid: %s\r\n",
345                         c->name, c->callerid ? c->callerid : "<unknown>", 
346                         ast_state2str(c->_state), bridge, c->uniqueid);
347                 }
348                 c = ast_channel_walk(c);
349         }
350         return 0;
351 }
352
353 static int action_redirect(struct mansession *s, struct message *m)
354 {
355         char *name = astman_get_header(m, "Channel");
356         char *name2 = astman_get_header(m, "ExtraChannel");
357         char *exten = astman_get_header(m, "Exten");
358         char *context = astman_get_header(m, "Context");
359         char *priority = astman_get_header(m, "Priority");
360         int pi = 0;
361         int res;
362         if (!name || !strlen(name)) {
363                 astman_send_error(s, "Channel not specified");
364                 return 0;
365         }
366         if (strlen(priority) && (sscanf(priority, "%d", &pi) != 1)) {
367                 astman_send_error(s, "Invalid priority\n");
368                 return 0;
369         }
370         res = ast_async_goto_by_name(name, context, exten, pi);
371         if (!res) {
372                 if (strlen(name2)) {
373                         res = ast_async_goto_by_name(name2, context, exten, pi);
374                         if (!res)
375                                 astman_send_ack(s, "Dual Redirect successful");
376                         else
377                                 astman_send_error(s, "Secondary redirect failed");
378                 } else
379                         astman_send_ack(s, "Redirect successful");
380         } else
381                 astman_send_error(s, "Redirect failed");
382         return 0;
383 }
384
385 static int action_command(struct mansession *s, struct message *m)
386 {
387         char *cmd = astman_get_header(m, "Command");
388         ast_pthread_mutex_lock(&s->lock);
389         s->blocking = 1;
390         ast_pthread_mutex_unlock(&s->lock);
391         ast_cli(s->fd, "Response: Follows\r\n");
392         ast_cli_command(s->fd, cmd);
393         ast_cli(s->fd, "--END COMMAND--\r\n\r\n");
394         ast_pthread_mutex_lock(&s->lock);
395         s->blocking = 0;
396         ast_pthread_mutex_unlock(&s->lock);
397         return 0;
398 }
399
400 static int action_originate(struct mansession *s, struct message *m)
401 {
402         char *name = astman_get_header(m, "Channel");
403         char *exten = astman_get_header(m, "Exten");
404         char *context = astman_get_header(m, "Context");
405         char *priority = astman_get_header(m, "Priority");
406         char *timeout = astman_get_header(m, "Timeout");
407         char *callerid = astman_get_header(m, "CallerID");
408         char *tech, *data;
409         int pi = 0;
410         int res;
411         int to = 30000;
412         int reason = 0;
413         char tmp[256];
414         if (!name) {
415                 astman_send_error(s, "Channel not specified");
416                 return 0;
417         }
418         if (strlen(priority) && (sscanf(priority, "%d", &pi) != 1)) {
419                 astman_send_error(s, "Invalid priority\n");
420                 return 0;
421         }
422         if (strlen(timeout) && (sscanf(timeout, "%d", &to) != 1)) {
423                 astman_send_error(s, "Invalid timeout\n");
424                 return 0;
425         }
426         strncpy(tmp, name, sizeof(tmp) - 1);
427         tech = tmp;
428         data = strchr(tmp, '/');
429         if (!data) {
430                 astman_send_error(s, "Invalid channel\n");
431                 return 0;
432         }
433         *data = '\0';
434         data++;
435         res = ast_pbx_outgoing_exten(tech, AST_FORMAT_SLINEAR, data, to, context, exten, pi, &reason, 0, strlen(callerid) ? callerid : NULL, NULL );
436         if (!res)
437                 astman_send_ack(s, "Originate successfully queued");
438         else
439                 astman_send_error(s, "Originate failed");
440         return 0;
441 }
442
443 static int action_mailboxstatus(struct mansession *s, struct message *m)
444 {
445         char *mailbox = astman_get_header(m, "Mailbox");
446         if (!mailbox || !strlen(mailbox)) {
447                 astman_send_error(s, "Mailbox not specified");
448                 return 0;
449         }
450         ast_cli(s->fd, "Response: Success\r\n"
451                                    "Message: Mailbox Status\r\n"
452                                    "Mailbox: %s\r\n"
453                                    "Waiting: %d\r\n\r\n", mailbox, ast_app_has_voicemail(mailbox));
454         return 0;
455 }
456
457 static int action_extensionstate(struct mansession *s, struct message *m)
458 {
459         char *exten = astman_get_header(m, "Exten");
460         char *context = astman_get_header(m, "Context");
461         char hint[256] = "";
462         int status;
463         if (!exten || !strlen(exten)) {
464                 astman_send_error(s, "Extension not specified");
465                 return 0;
466         }
467         if (!context || !strlen(context))
468                 context = "default";
469         status = ast_extension_state(NULL, context, exten);
470         ast_get_hint(hint, sizeof(hint) - 1, NULL, context, exten);
471         ast_cli(s->fd, "Response: Success\r\n"
472                                    "Message: Extension Status\r\n"
473                                    "Exten: %s\r\n"
474                                    "Context: %s\r\n"
475                                    "Hint: %s\r\n"
476                                    "Status: %d\r\n\r\n", exten, context, hint, status);
477         return 0;
478 }
479
480 static int action_timeout(struct mansession *s, struct message *m)
481 {
482         struct ast_channel *c = NULL;
483         char *name = astman_get_header(m, "Channel");
484         int timeout = atoi(astman_get_header(m, "Timeout"));
485         if (!strlen(name)) {
486                 astman_send_error(s, "No channel specified");
487                 return 0;
488         }
489         if (!timeout) {
490                 astman_send_error(s, "No timeout specified");
491                 return 0;
492         }
493         c = ast_channel_walk(NULL);
494         while(c) {
495                 if (!strcasecmp(c->name, name)) {
496                         break;
497                 }
498                 c = ast_channel_walk(c);
499         }
500         if (!c) {
501                 astman_send_error(s, "No such channel");
502                 return 0;
503         }
504         ast_channel_setwhentohangup(c, timeout);
505         astman_send_ack(s, "Timeout Set");
506         return 0;
507 }
508
509 static int process_message(struct mansession *s, struct message *m)
510 {
511         char action[80];
512         struct manager_action *tmp = first_action;
513
514         strncpy(action, astman_get_header(m, "Action"), sizeof(action));
515         ast_log( LOG_DEBUG, "Manager received command '%s'\n", action );
516
517         if (!strlen(action)) {
518                 astman_send_error(s, "Missing action in request");
519                 return 0;
520         }
521         if (!s->authenticated) {
522                 if (!strcasecmp(action, "Challenge")) {
523                         char *authtype;
524                         authtype = astman_get_header(m, "AuthType");
525                         if (!strcasecmp(authtype, "MD5")) {
526                                 if (!s->challenge || !strlen(s->challenge)) {
527                                         ast_pthread_mutex_lock(&s->lock);
528                                         snprintf(s->challenge, sizeof(s->challenge), "%d", rand());
529                                         ast_pthread_mutex_unlock(&s->lock);
530                                 }
531                                 ast_cli(s->fd, "Response: Success\r\nChallenge: %s\r\n\r\n", s->challenge);
532                                 return 0;
533                         } else {
534                                 astman_send_error(s, "Must specify AuthType");
535                                 return 0;
536                         }
537                 } else if (!strcasecmp(action, "Login")) {
538                         if (authenticate(s, m)) {
539                                 sleep(1);
540                                 astman_send_error(s, "Authentication failed");
541                                 return -1;
542                         } else {
543                                 s->authenticated = 1;
544                                 if (option_verbose > 1) 
545                                         ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged on from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
546                                 ast_log(LOG_EVENT, "Manager '%s' logged on from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
547                                 astman_send_ack(s, "Authentication accepted");
548                         }
549                 } else 
550                         astman_send_error(s, "Authentication Required");
551         } else {
552                 while( tmp ) {          
553                         if (!strcasecmp(action, tmp->action)) {
554                                 if ((s->writeperm & tmp->authority) == tmp->authority) {
555                                         if (tmp->func(s, m))
556                                                 return -1;
557                                 } else {
558                                         astman_send_error(s, "Permission denied");
559                                 }
560                                 return 0;
561                         }
562                         tmp = tmp->next;
563                 }
564                 astman_send_error(s, "Invalid/unknown command");
565         }
566         return 0;
567 }
568
569 static int get_input(struct mansession *s, char *output)
570 {
571         /* output must have at least sizeof(s->inbuf) space */
572         int res;
573         int x;
574         fd_set fds;
575         for (x=1;x<s->inlen;x++) {
576                 if ((s->inbuf[x] == '\n') && (s->inbuf[x-1] == '\r')) {
577                         /* Copy output data up to and including \r\n */
578                         memcpy(output, s->inbuf, x + 1);
579                         /* Add trailing \0 */
580                         output[x+1] = '\0';
581                         /* Move remaining data back to the front */
582                         memmove(s->inbuf, s->inbuf + x + 1, s->inlen - x);
583                         s->inlen -= (x + 1);
584                         return 1;
585                 }
586         } 
587         if (s->inlen >= sizeof(s->inbuf) - 1) {
588                 ast_log(LOG_WARNING, "Dumping long line with no return from %s: %s\n", inet_ntoa(s->sin.sin_addr), s->inbuf);
589                 s->inlen = 0;
590         }
591         FD_ZERO(&fds);
592         FD_SET(s->fd, &fds);
593         res = ast_select(s->fd + 1, &fds, NULL, NULL, NULL);
594         if (res < 0) {
595                 ast_log(LOG_WARNING, "Select returned error: %s\n", strerror(errno));
596         } else if (res > 0) {
597                 ast_pthread_mutex_lock(&s->lock);
598                 res = read(s->fd, s->inbuf + s->inlen, sizeof(s->inbuf) - 1 - s->inlen);
599                 ast_pthread_mutex_unlock(&s->lock);
600                 if (res < 1)
601                         return -1;
602         }
603         s->inlen += res;
604         s->inbuf[s->inlen] = '\0';
605         return 0;
606 }
607
608 static void *session_do(void *data)
609 {
610         struct mansession *s = data;
611         struct message m;
612         int res;
613         
614         ast_pthread_mutex_lock(&s->lock);
615         ast_cli(s->fd, "Asterisk Call Manager/1.0\r\n");
616         ast_pthread_mutex_unlock(&s->lock);
617         memset(&m, 0, sizeof(&m));
618         for (;;) {
619                 res = get_input(s, m.headers[m.hdrcount]);
620                 if (res > 0) {
621                         /* Strip trailing \r\n */
622                         if (strlen(m.headers[m.hdrcount]) < 2)
623                                 continue;
624                         m.headers[m.hdrcount][strlen(m.headers[m.hdrcount]) - 2] = '\0';
625                         if (!strlen(m.headers[m.hdrcount])) {
626                                 if (process_message(s, &m))
627                                         break;
628                                 memset(&m, 0, sizeof(&m));
629                         } else if (m.hdrcount < MAX_HEADERS - 1)
630                                 m.hdrcount++;
631                 } else if (res < 0)
632                         break;
633         }
634         if (s->authenticated) {
635                 if (option_verbose > 1) 
636                         ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged off from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
637                 ast_log(LOG_EVENT, "Manager '%s' logged off from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
638         } else {
639                 if (option_verbose > 1)
640                         ast_verbose(VERBOSE_PREFIX_2 "Connect attempt from '%s' unable to authenticate\n", inet_ntoa(s->sin.sin_addr));
641                 ast_log(LOG_EVENT, "Failed attempt from %s\n", inet_ntoa(s->sin.sin_addr));
642         }
643         destroy_session(s);
644         return NULL;
645 }
646
647 static void *accept_thread(void *ignore)
648 {
649         int as;
650         struct sockaddr_in sin;
651         int sinlen;
652         struct mansession *s;
653         struct protoent *p;
654         int arg = 1;
655         pthread_attr_t attr;
656
657         pthread_attr_init(&attr);
658         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
659
660         for (;;) {
661                 sinlen = sizeof(sin);
662                 as = accept(asock, &sin, &sinlen);
663                 if (as < 0) {
664                         ast_log(LOG_NOTICE, "Accept returned -1: %s\n", strerror(errno));
665                         continue;
666                 }
667                 p = getprotobyname("tcp");
668                 if( p ) {
669                         if( setsockopt(as, p->p_proto, TCP_NODELAY, (char *)&arg, sizeof(arg) ) < 0 ) {
670                                 ast_log(LOG_WARNING, "Failed to set manager tcp connection to TCP_NODELAY mode: %s\n", strerror(errno));
671                         }
672                 }
673                 s = malloc(sizeof(struct mansession));
674                 if (!s) {
675                         ast_log(LOG_WARNING, "Failed to allocate management session: %s\n", strerror(errno));
676                         continue;
677                 } 
678                 memset(s, 0, sizeof(struct mansession));
679                 memcpy(&s->sin, &sin, sizeof(sin));
680                 ast_pthread_mutex_init(&s->lock);
681                 s->fd = as;
682                 ast_pthread_mutex_lock(&sessionlock);
683                 s->next = sessions;
684                 sessions = s;
685                 ast_pthread_mutex_unlock(&sessionlock);
686                 if (pthread_create(&t, &attr, session_do, s))
687                         destroy_session(s);
688         }
689         pthread_attr_destroy(&attr);
690         return NULL;
691 }
692
693 int manager_event(int category, char *event, char *fmt, ...)
694 {
695         struct mansession *s;
696         char tmp[4096];
697         va_list ap;
698
699         ast_pthread_mutex_lock(&sessionlock);
700         s = sessions;
701         while(s) {
702                 if ((s->readperm & category) == category) {
703                         ast_pthread_mutex_lock(&s->lock);
704                         if (!s->blocking) {
705                                 ast_cli(s->fd, "Event: %s\r\n", event);
706                                 va_start(ap, fmt);
707                                 vsnprintf(tmp, sizeof(tmp), fmt, ap);
708                                 va_end(ap);
709                                 write(s->fd, tmp, strlen(tmp));
710                                 ast_cli(s->fd, "\r\n");
711                         }
712                         ast_pthread_mutex_unlock(&s->lock);
713                 }
714                 s = s->next;
715         }
716         ast_pthread_mutex_unlock(&sessionlock);
717         return 0;
718 }
719
720 int ast_manager_unregister( char *action ) {
721         struct manager_action *cur = first_action, *prev = first_action;
722
723         ast_pthread_mutex_lock(&actionlock);
724         while( cur ) {          
725                 if (!strcasecmp(action, cur->action)) {
726                         prev->next = cur->next;
727                         free(cur);
728                         if (option_verbose > 1) 
729                                 ast_verbose(VERBOSE_PREFIX_2 "Manager unregistered action %s\n", action);
730                         ast_pthread_mutex_unlock(&actionlock);
731                         return 0;
732                 }
733                 prev = cur;
734                 cur = cur->next;
735         }
736         ast_pthread_mutex_unlock(&actionlock);
737         return 0;
738 }
739
740 static int manager_state_cb(char *context, char *exten, int state, void *data)
741 {
742         /* Notify managers of change */
743         manager_event(EVENT_FLAG_CALL, "ExtensionStatus", "Exten: %s\r\nContext: %s\r\nStatus: %d\r\n", exten, context, state);
744         return 0;
745 }
746
747 int ast_manager_register( char *action, int auth, 
748         int (*func)(struct mansession *s, struct message *m), char *synopsis)
749 {
750         struct manager_action *cur = first_action, *prev = NULL;
751
752         ast_pthread_mutex_lock(&actionlock);
753         while(cur) { /* Walk the list of actions */
754                 prev = cur; 
755                 cur = cur->next;
756         }
757         cur = malloc( sizeof(struct manager_action) );
758         if( !cur ) {
759                 ast_log(LOG_WARNING, "Manager: out of memory trying to register action\n");
760                 ast_pthread_mutex_unlock(&actionlock);
761                 return -1;
762         }
763         strncpy( cur->action, action, 255 );
764         cur->authority = auth;
765         cur->func = func;
766         cur->synopsis = synopsis;
767         cur->next = NULL;
768
769         if( prev ) prev->next = cur;
770         else first_action = cur;
771
772         if (option_verbose > 1) 
773                 ast_verbose(VERBOSE_PREFIX_2 "Manager registered action %s\n", action);
774         ast_pthread_mutex_unlock(&actionlock);
775         return 0;
776 }
777
778 static int registered = 0;
779
780 int init_manager(void)
781 {
782         struct ast_config *cfg;
783         char *val;
784         int oldportno = portno;
785         static struct sockaddr_in ba;
786         int x = 1;
787         if (!registered) {
788                 /* Register default actions */
789                 ast_manager_register( "Ping", 0, action_ping, "Ping" );
790                 ast_manager_register( "Logoff", 0, action_logoff, "Logoff Manager" );
791                 ast_manager_register( "Hangup", EVENT_FLAG_CALL, action_hangup, "Hangup Channel" );
792                 ast_manager_register( "Status", EVENT_FLAG_CALL, action_status, "Status" );
793                 ast_manager_register( "Redirect", EVENT_FLAG_CALL, action_redirect, "Redirect" );
794                 ast_manager_register( "Originate", EVENT_FLAG_CALL, action_originate, "Originate Call" );
795                 ast_manager_register( "MailboxStatus", EVENT_FLAG_CALL, action_mailboxstatus, "Check Mailbox" );
796                 ast_manager_register( "Command", EVENT_FLAG_COMMAND, action_command, "Execute Command" );
797                 ast_manager_register( "ExtensionState", EVENT_FLAG_CALL, action_extensionstate, "Check Extension Status" );
798                 ast_manager_register( "AbsoluteTimeout", EVENT_FLAG_CALL, action_timeout, "Set Absolute Timeout" );
799
800                 ast_cli_register(&show_mancmds_cli);
801                 ast_cli_register(&show_manconn_cli);
802                 ast_extension_state_add(NULL, NULL, manager_state_cb, NULL);
803                 registered = 1;
804         }
805         portno = DEFAULT_MANAGER_PORT;
806         cfg = ast_load("manager.conf");
807         if (!cfg) {
808                 ast_log(LOG_NOTICE, "Unable to open management configuration manager.conf.  Call management disabled.\n");
809                 return 0;
810         }
811         memset(&ba, 0, sizeof(ba));
812         val = ast_variable_retrieve(cfg, "general", "enabled");
813         if (val)
814                 enabled = ast_true(val);
815
816         if ((val = ast_variable_retrieve(cfg, "general", "portno"))) {
817                 if (sscanf(val, "%d", &portno) != 1) {
818                         ast_log(LOG_WARNING, "Invalid port number '%s'\n", val);
819                         portno = DEFAULT_MANAGER_PORT;
820                 }
821         }
822         
823         ba.sin_family = AF_INET;
824         ba.sin_port = htons(portno);
825         memset(&ba.sin_addr, 0, sizeof(ba.sin_addr));
826         
827         if ((val = ast_variable_retrieve(cfg, "general", "bindaddr"))) {
828                 if (!inet_aton(val, &ba.sin_addr)) { 
829                         ast_log(LOG_WARNING, "Invalid address '%s' specified, using 0.0.0.0\n", val);
830                         memset(&ba.sin_addr, 0, sizeof(ba.sin_addr));
831                 }
832         }
833
834         if ((asock > -1) && ((portno != oldportno) || !enabled)) {
835 #if 0
836                 /* Can't be done yet */
837                 close(asock);
838                 asock = -1;
839 #else
840                 ast_log(LOG_WARNING, "Unable to change management port / enabled\n");
841 #endif
842         }
843         /* If not enabled, do nothing */
844         if (!enabled)
845                 return 0;
846         if (asock < 0) {
847                 asock = socket(AF_INET, SOCK_STREAM, 0);
848                 if (asock < 0) {
849                         ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
850                         return -1;
851                 }
852                 setsockopt(asock, SOL_SOCKET, SO_REUSEADDR, &x, sizeof(x));
853                 if (bind(asock, &ba, sizeof(ba))) {
854                         ast_log(LOG_WARNING, "Unable to bind socket: %s\n", strerror(errno));
855                         close(asock);
856                         asock = -1;
857                         return -1;
858                 }
859                 if (listen(asock, 2)) {
860                         ast_log(LOG_WARNING, "Unable to listen on socket: %s\n", strerror(errno));
861                         close(asock);
862                         asock = -1;
863                         return -1;
864                 }
865                 if (option_verbose)
866                         ast_verbose("Asterisk Management interface listening on port %d\n", portno);
867                 pthread_create(&t, NULL, accept_thread, NULL);
868         }
869         ast_destroy(cfg);
870         return 0;
871 }
872
873 int reload_manager(void)
874 {
875         manager_event(EVENT_FLAG_SYSTEM, "Reload", "Message: Reload Requested\r\n");
876         return init_manager();
877 }