aboutsummaryrefslogtreecommitdiffstats
path: root/manager.c
blob: ba33f132c5d7a58d2a69d507b480ad3730ea8385 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
/*
 * Asterisk -- A telephony toolkit for Linux.
 *
 * Channel Management and more
 * 
 * Copyright (C) 1999, Mark Spencer
 *
 * Mark Spencer <markster@linux-support.net>
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License
 */

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <asterisk/channel.h>
#include <asterisk/file.h>
#include <asterisk/manager.h>
#include <asterisk/config.h>
#include <asterisk/lock.h>
#include <asterisk/logger.h>
#include <asterisk/options.h>
#include <asterisk/cli.h>
#include <asterisk/app.h>
#include <asterisk/pbx.h>
#include <asterisk/md5.h>
#include <asterisk/acl.h>

static int enabled = 0;
static int portno = DEFAULT_MANAGER_PORT;
static int asock = -1;
static pthread_t t;
static ast_mutex_t sessionlock = AST_MUTEX_INITIALIZER;

static struct permalias {
	int num;
	char *label;
} perms[] = {
	{ EVENT_FLAG_SYSTEM, "system" },
	{ EVENT_FLAG_CALL, "call" },
	{ EVENT_FLAG_LOG, "log" },
	{ EVENT_FLAG_VERBOSE, "verbose" },
	{ EVENT_FLAG_COMMAND, "command" },
	{ EVENT_FLAG_AGENT, "agent" },
	{ EVENT_FLAG_USER, "user" },
	{ -1, "all" },
};

static struct mansession *sessions = NULL;
static struct manager_action *first_action = NULL;
static ast_mutex_t actionlock = AST_MUTEX_INITIALIZER;

static int handle_showmancmds(int fd, int argc, char *argv[])
{
	struct manager_action *cur = first_action;

	ast_mutex_lock(&actionlock);
	while(cur) { /* Walk the list of actions */
		ast_cli(fd, "\t%s  %s\r\n",cur->action, cur->synopsis);
		cur = cur->next;
	}

	ast_mutex_unlock(&actionlock);
	return RESULT_SUCCESS;
}

static int handle_showmanconn(int fd, int argc, char *argv[])
{
	struct mansession *s;

	ast_mutex_lock(&sessionlock);
	s = sessions;
	ast_cli(fd, "  Username\tIP Address\n");
	while(s) {
		ast_cli(fd, "  %s\t\t%s\r\n",s->username, inet_ntoa(s->sin.sin_addr));
		s = s->next;
	}

	ast_mutex_unlock(&sessionlock);
	return RESULT_SUCCESS;
}

static char showmancmds_help[] = 
"Usage: show manager commands\n"
"	Prints a listing of all the available manager commands.\n";

static char showmanconn_help[] = 
"Usage: show manager connected\n"
"	Prints a listing of the users that are connected to the\n"
"manager interface.\n";

static struct ast_cli_entry show_mancmds_cli =
	{ { "show", "manager", "commands", NULL },
	handle_showmancmds, "Show manager commands", showmancmds_help };

static struct ast_cli_entry show_manconn_cli =
	{ { "show", "manager", "connected", NULL },
	handle_showmanconn, "Show connected manager users", showmanconn_help };

static void destroy_session(struct mansession *s)
{
	struct mansession *cur, *prev = NULL;
	ast_mutex_lock(&sessionlock);
	cur = sessions;
	while(cur) {
		if (cur == s)
			break;
		prev = cur;
		cur = cur->next;
	}
	if (cur) {
		if (prev)
			prev->next = cur->next;
		else
			sessions = cur->next;
		if (s->fd > -1)
			close(s->fd);
		free(s);
	} else
		ast_log(LOG_WARNING, "Trying to delete non-existant session %p?\n", s);
	ast_mutex_unlock(&sessionlock);
	
}

char *astman_get_header(struct message *m, char *var)
{
	char cmp[80];
	int x;
	snprintf(cmp, sizeof(cmp), "%s: ", var);
	for (x=0;x<m->hdrcount;x++)
		if (!strncasecmp(cmp, m->headers[x], strlen(cmp)))
			return m->headers[x] + strlen(cmp);
	return "";
}

void astman_send_error(struct mansession *s, struct message *m, char *error)
{
	char *id = astman_get_header(m,"ActionID");
	ast_mutex_lock(&s->lock);
	ast_cli(s->fd, "Response: Error\r\n");
	if (id && strlen(id))
		ast_cli(s->fd, "ActionID: %s\r\n",id);
	ast_cli(s->fd, "Message: %s\r\n\r\n", error);
	ast_mutex_unlock(&s->lock);
}

void astman_send_response(struct mansession *s, struct message *m, char *resp, char *msg)
{
	char *id = astman_get_header(m,"ActionID");
	ast_mutex_lock(&s->lock);
	ast_cli(s->fd, "Response: %s\r\n", resp);
	if (id && strlen(id))
		ast_cli(s->fd, "ActionID: %s\r\n",id);
	if (msg)
		ast_cli(s->fd, "Message: %s\r\n\r\n", msg);
	else
		ast_cli(s->fd, "\r\n");
	ast_mutex_unlock(&s->lock);
}

void astman_send_ack(struct mansession *s, struct message *m, char *msg)
{
	astman_send_response(s, m, "Success", msg);
}

static int get_perm(char *instr)
{
	char tmp[256];
	char *c;
	int x;
	int ret = 0;
	char *stringp=NULL;
	if (!instr)
		return 0;
	strncpy(tmp, instr, sizeof(tmp) - 1);
	stringp=tmp;
	c = strsep(&stringp, ",");
	while(c) {
		for (x=0;x<sizeof(perms) / sizeof(perms[0]);x++) {
			if (!strcasecmp(perms[x].label, c)) 
				ret |= perms[x].num;
		}
		c = strsep(&stringp, ",");
	}
	return ret;
}

static int authenticate(struct mansession *s, struct message *m)
{
	struct ast_config *cfg;
	char *cat;
	char *user = astman_get_header(m, "Username");
	char *pass = astman_get_header(m, "Secret");
	char *authtype = astman_get_header(m, "AuthType");
	char *key = astman_get_header(m, "Key");

	cfg = ast_load("manager.conf");
	if (!cfg)
		return -1;
	cat = ast_category_browse(cfg, NULL);
	while(cat) {
		if (strcasecmp(cat, "general")) {
			/* This is a user */
			if (!strcasecmp(cat, user)) {
				struct ast_variable *v;
				struct ast_ha *ha = NULL;
				char *password = NULL;
				v = ast_variable_browse(cfg, cat);
				while (v) {
					if (!strcasecmp(v->name, "secret")) {
						password = v->value;
					} else if (!strcasecmp(v->name, "permit") ||
						   !strcasecmp(v->name, "deny")) {
							ha = ast_append_ha(v->name, v->value, ha);
					}						
					v = v->next;
				}
				if (ha && !ast_apply_ha(ha, &(s->sin))) {
					ast_log(LOG_NOTICE, "%s failed to pass IP ACL as '%s'\n", inet_ntoa(s->sin.sin_addr), user);
					ast_free_ha(ha);
					ast_destroy(cfg);
					return -1;
				} else if (ha)
					ast_free_ha(ha);
				if (!strcasecmp(authtype, "MD5")) {
					if (key && strlen(key) && s->challenge) {
						int x;
						int len=0;
						char md5key[256] = "";
						struct MD5Context md5;
						unsigned char digest[16];
						MD5Init(&md5);
						MD5Update(&md5, s->challenge, strlen(s->challenge));
						MD5Update(&md5, password, strlen(password));
						MD5Final(digest, &md5);
						for (x=0;x<16;x++)
							len += sprintf(md5key + len, "%2.2x", digest[x]);
						if (!strcmp(md5key, key))
							break;
						else {
							ast_destroy(cfg);
							return -1;
						}
					}
				} else if (password && !strcasecmp(password, pass)) {
					break;
				} else {
					ast_log(LOG_NOTICE, "%s failed to authenticate as '%s'\n", inet_ntoa(s->sin.sin_addr), user);
					ast_destroy(cfg);
					return -1;
				}	
			}
		}
		cat = ast_category_browse(cfg, cat);
	}
	if (cat) {
		strncpy(s->username, cat, sizeof(s->username) - 1);
		s->readperm = get_perm(ast_variable_retrieve(cfg, cat, "read"));
		s->writeperm = get_perm(ast_variable_retrieve(cfg, cat, "write"));
		ast_destroy(cfg);
		return 0;
	}
	ast_log(LOG_NOTICE, "%s tried to authenticate with non-existant user '%s'\n", inet_ntoa(s->sin.sin_addr), user);
	ast_destroy(cfg);
	return -1;
}

static int action_ping(struct mansession *s, struct message *m)
{
	astman_send_response(s, m, "Pong", NULL);
	return 0;
}

static int action_logoff(struct mansession *s, struct message *m)
{
	astman_send_response(s, m, "Goodbye", "Thanks for all the fish.");
	return -1;
}

static int action_hangup(struct mansession *s, struct message *m)
{
	struct ast_channel *c = NULL;
	char *name = astman_get_header(m, "Channel");
	if (!strlen(name)) {
		astman_send_error(s, m, "No channel specified");
		return 0;
	}
	c = ast_channel_walk(NULL);
	while(c) {
		if (!strcasecmp(c->name, name)) {
			break;
		}
		c = ast_channel_walk(c);
	}
	if (!c) {
		astman_send_error(s, m, "No such channel");
		return 0;
	}
	ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
	astman_send_ack(s, m, "Channel Hungup");
	return 0;
}

static int action_status(struct mansession *s, struct message *m)
{
	char *id = astman_get_header(m,"ActionID");
	char idText[256] = "";
	struct ast_channel *c;
	char bridge[256];
	astman_send_ack(s, m, "Channel status will follow");
	c = ast_channel_walk(NULL);
        if (id && strlen(id))
                snprintf(idText,256,"ActionID: %s\r\n",id);
	while(c) {
		if (c->bridge)
			snprintf(bridge, sizeof(bridge), "Link: %s\r\n", c->bridge->name);
		else
			strcpy(bridge, "");
		if (c->pbx) {
			ast_cli(s->fd,
			"Event: Status\r\n"
			"Channel: %s\r\n"
			"CallerID: %s\r\n"
			"State: %s\r\n"
			"Context: %s\r\n"
			"Extension: %s\r\n"
			"Priority: %d\r\n"
			"%s"
			"Uniqueid: %s\r\n"
			"%s"
			"\r\n",
			c->name, c->callerid ? c->callerid : "<unknown>", 
			ast_state2str(c->_state), c->context,
			c->exten, c->priority, bridge, c->uniqueid, idText);
		} else {
			ast_cli(s->fd,
			"Event: Status\r\n"
			"Channel: %s\r\n"
			"CallerID: %s\r\n"
			"State: %s\r\n"
			"%s"
			"Uniqueid: %s\r\n"
			"%s"
			"\r\n",
			c->name, c->callerid ? c->callerid : "<unknown>", 
			ast_state2str(c->_state), bridge, c->uniqueid, idText);
		}
		c = ast_channel_walk(c);
	}
	return 0;
}

static int action_redirect(struct mansession *s, struct message *m)
{
	char *name = astman_get_header(m, "Channel");
	char *name2 = astman_get_header(m, "ExtraChannel");
	char *exten = astman_get_header(m, "Exten");
	char *context = astman_get_header(m, "Context");
	char *priority = astman_get_header(m, "Priority");
	int pi = 0;
	int res;
	if (!name || !strlen(name)) {
		astman_send_error(s, m, "Channel not specified");
		return 0;
	}
	if (strlen(priority) && (sscanf(priority, "%d", &pi) != 1)) {
		astman_send_error(s, m, "Invalid priority\n");
		return 0;
	}
	res = ast_async_goto_by_name(name, context, exten, pi);
	if (!res) {
		if (strlen(name2)) {
			res = ast_async_goto_by_name(name2, context, exten, pi);
			if (!res)
				astman_send_ack(s, m, "Dual Redirect successful");
			else
				astman_send_error(s, m, "Secondary redirect failed");
		} else
			astman_send_ack(s, m, "Redirect successful");
	} else
		astman_send_error(s, m, "Redirect failed");
	return 0;
}

static int action_command(struct mansession *s, struct message *m)
{
	char *cmd = astman_get_header(m, "Command");
	ast_mutex_lock(&s->lock);
	s->blocking = 1;
	ast_mutex_unlock(&s->lock);
	ast_cli(s->fd, "Response: Follows\r\n");
	/* FIXME: Wedge a ActionID response in here, waiting for later changes */
	ast_cli_command(s->fd, cmd);
	ast_cli(s->fd, "--END COMMAND--\r\n\r\n");
	ast_mutex_lock(&s->lock);
	s->blocking = 0;
	ast_mutex_unlock(&s->lock);
	return 0;
}

static int action_originate(struct mansession *s, struct message *m)
{
	char *name = astman_get_header(m, "Channel");
	char *exten = astman_get_header(m, "Exten");
	char *context = astman_get_header(m, "Context");
	char *priority = astman_get_header(m, "Priority");
	char *timeout = astman_get_header(m, "Timeout");
	char *callerid = astman_get_header(m, "CallerID");
	char *app = astman_get_header(m, "Application");
	char *appdata = astman_get_header(m, "Data");
	char *tech, *data;
	int pi = 0;
	int res;
	int to = 30000;
	int reason = 0;
	char tmp[256];
	if (!name) {
		astman_send_error(s, m, "Channel not specified");
		return 0;
	}
	if (strlen(priority) && (sscanf(priority, "%d", &pi) != 1)) {
		astman_send_error(s, m, "Invalid priority\n");
		return 0;
	}
	if (strlen(timeout) && (sscanf(timeout, "%d", &to) != 1)) {
		astman_send_error(s, m, "Invalid timeout\n");
		return 0;
	}
	strncpy(tmp, name, sizeof(tmp) - 1);
	tech = tmp;
	data = strchr(tmp, '/');
	if (!data) {
		astman_send_error(s, m, "Invalid channel\n");
		return 0;
	}
	*data = '\0';
	data++;
	if (strlen(app)) {
           res = ast_pbx_outgoing_app(tech, AST_FORMAT_SLINEAR, data, to, app, appdata, &reason, 0, strlen(callerid) ? callerid : NULL, NULL );
       	} else {
	   res = ast_pbx_outgoing_exten(tech, AST_FORMAT_SLINEAR, data, to, context, exten, pi, &reason, 0, strlen(callerid) ? callerid : NULL, NULL );
	}   
	if (!res)
		astman_send_ack(s, m, "Originate successfully queued");
	else
		astman_send_error(s, m, "Originate failed");
	return 0;
}

static int action_mailboxstatus(struct mansession *s, struct message *m)
{
	char *mailbox = astman_get_header(m, "Mailbox");
	char *id = astman_get_header(m,"ActionID");
	char idText[256] = "";
	if (!mailbox || !strlen(mailbox)) {
		astman_send_error(s, m, "Mailbox not specified");
		return 0;
	}
        if (id && strlen(id))
                snprintf(idText,256,"ActionID: %s\r\n",id);
	ast_cli(s->fd, "Response: Success\r\n"
				   "%s"
				   "Message: Mailbox Status\r\n"
				   "Mailbox: %s\r\n"
		 		   "Waiting: %d\r\n\r\n", idText, mailbox, ast_app_has_voicemail(mailbox));
	return 0;
}

static int action_mailboxcount(struct mansession *s, struct message *m)
{
	char *mailbox = astman_get_header(m, "Mailbox");
	char *id = astman_get_header(m,"ActionID");
	char idText[256] = "";
	int newmsgs = 0, oldmsgs = 0;
	if (!mailbox || !strlen(mailbox)) {
		astman_send_error(s, m, "Mailbox not specified");
		return 0;
	}
	ast_app_messagecount(mailbox, &newmsgs, &oldmsgs);
        if (id && strlen(id)) {
                snprintf(idText,256,"ActionID: %s\r\n",id);
        }
	ast_cli(s->fd, "Response: Success\r\n"
				   "%s"
				   "Message: Mailbox Message Count\r\n"
				   "Mailbox: %s\r\n"
		 		   "NewMessages: %d\r\n"
				   "OldMessages: %d\r\n" 
				   "\r\n",
				    idText,mailbox, newmsgs, oldmsgs);
	return 0;
}

static int action_extensionstate(struct mansession *s, struct message *m)
{
	char *exten = astman_get_header(m, "Exten");
	char *context = astman_get_header(m, "Context");
	char *id = astman_get_header(m,"ActionID");
	char idText[256] = "";
	char hint[256] = "";
	int status;
	if (!exten || !strlen(exten)) {
		astman_send_error(s, m, "Extension not specified");
		return 0;
	}
	if (!context || !strlen(context))
		context = "default";
	status = ast_extension_state(NULL, context, exten);
	ast_get_hint(hint, sizeof(hint) - 1, NULL, context, exten);
        if (id && strlen(id)) {
                snprintf(idText,256,"ActionID: %s\r\n",id);
        }
	ast_cli(s->fd, "Response: Success\r\n"
			           "%s"
				   "Message: Extension Status\r\n"
				   "Exten: %s\r\n"
				   "Context: %s\r\n"
				   "Hint: %s\r\n"
		 		   "Status: %d\r\n\r\n",
				   idText,exten, context, hint, status);
	return 0;
}

static int action_timeout(struct mansession *s, struct message *m)
{
	struct ast_channel *c = NULL;
	char *name = astman_get_header(m, "Channel");
	int timeout = atoi(astman_get_header(m, "Timeout"));
	if (!strlen(name)) {
		astman_send_error(s, m, "No channel specified");
		return 0;
	}
	if (!timeout) {
		astman_send_error(s, m, "No timeout specified");
		return 0;
	}
	c = ast_channel_walk(NULL);
	while(c) {
		if (!strcasecmp(c->name, name)) {
			break;
		}
		c = ast_channel_walk(c);
	}
	if (!c) {
		astman_send_error(s, m, "No such channel");
		return 0;
	}
	ast_channel_setwhentohangup(c, timeout);
	astman_send_ack(s, m, "Timeout Set");
	return 0;
}

static int process_message(struct mansession *s, struct message *m)
{
	char action[80];
	struct manager_action *tmp = first_action;
	char *id = astman_get_header(m,"ActionID");
	char idText[256] = "";

	strncpy(action, astman_get_header(m, "Action"), sizeof(action));
	ast_log( LOG_DEBUG, "Manager received command '%s'\n", action );

	if (!strlen(action)) {
		astman_send_error(s, m, "Missing action in request");
		return 0;
	}
        if (id && strlen(id)) {
                snprintf(idText,256,"ActionID: %s\r\n",id);
        }
	if (!s->authenticated) {
		if (!strcasecmp(action, "Challenge")) {
			char *authtype;
			authtype = astman_get_header(m, "AuthType");
			if (!strcasecmp(authtype, "MD5")) {
				if (!s->challenge || !strlen(s->challenge)) {
					ast_mutex_lock(&s->lock);
					snprintf(s->challenge, sizeof(s->challenge), "%d", rand());
					ast_mutex_unlock(&s->lock);
				}
				ast_cli(s->fd, "Response: Success\r\n"
						"%s"
						"Challenge: %s\r\n\r\n",
						idText,s->challenge);
				return 0;
			} else {
				astman_send_error(s, m, "Must specify AuthType");
				return 0;
			}
		} else if (!strcasecmp(action, "Login")) {
			if (authenticate(s, m)) {
				sleep(1);
				astman_send_error(s, m, "Authentication failed");
				return -1;
			} else {
				s->authenticated = 1;
				if (option_verbose > 1) 
					ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged on from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
				ast_log(LOG_EVENT, "Manager '%s' logged on from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
				astman_send_ack(s, m, "Authentication accepted");
			}
		} else if (!strcasecmp(action, "Logoff")) {
			astman_send_ack(s, m, "See ya");
			return -1;
		} else
			astman_send_error(s, m, "Authentication Required");
	} else {
		while( tmp ) { 		
			if (!strcasecmp(action, tmp->action)) {
				if ((s->writeperm & tmp->authority) == tmp->authority) {
					if (tmp->func(s, m))
						return -1;
				} else {
					astman_send_error(s, m, "Permission denied");
				}
				return 0;
			}
			tmp = tmp->next;
		}
		astman_send_error(s, m, "Invalid/unknown command");
	}
	return 0;
}

static int get_input(struct mansession *s, char *output)
{
	/* output must have at least sizeof(s->inbuf) space */
	int res;
	int x;
	fd_set fds;
	for (x=1;x<s->inlen;x++) {
		if ((s->inbuf[x] == '\n') && (s->inbuf[x-1] == '\r')) {
			/* Copy output data up to and including \r\n */
			memcpy(output, s->inbuf, x + 1);
			/* Add trailing \0 */
			output[x+1] = '\0';
			/* Move remaining data back to the front */
			memmove(s->inbuf, s->inbuf + x + 1, s->inlen - x);
			s->inlen -= (x + 1);
			return 1;
		}
	} 
	if (s->inlen >= sizeof(s->inbuf) - 1) {
		ast_log(LOG_WARNING, "Dumping long line with no return from %s: %s\n", inet_ntoa(s->sin.sin_addr), s->inbuf);
		s->inlen = 0;
	}
	FD_ZERO(&fds);
	FD_SET(s->fd, &fds);
	res = ast_select(s->fd + 1, &fds, NULL, NULL, NULL);
	if (res < 0) {
		ast_log(LOG_WARNING, "Select returned error: %s\n", strerror(errno));
	} else if (res > 0) {
		ast_mutex_lock(&s->lock);
		res = read(s->fd, s->inbuf + s->inlen, sizeof(s->inbuf) - 1 - s->inlen);
		ast_mutex_unlock(&s->lock);
		if (res < 1)
			return -1;
	}
	s->inlen += res;
	s->inbuf[s->inlen] = '\0';
	return 0;
}

static void *session_do(void *data)
{
	struct mansession *s = data;
	struct message m;
	int res;
	
	ast_mutex_lock(&s->lock);
	ast_cli(s->fd, "Asterisk Call Manager/1.0\r\n");
	ast_mutex_unlock(&s->lock);
	memset(&m, 0, sizeof(&m));
	for (;;) {
		res = get_input(s, m.headers[m.hdrcount]);
		if (res > 0) {
			/* Strip trailing \r\n */
			if (strlen(m.headers[m.hdrcount]) < 2)
				continue;
			m.headers[m.hdrcount][strlen(m.headers[m.hdrcount]) - 2] = '\0';
			if (!strlen(m.headers[m.hdrcount])) {
				if (process_message(s, &m))
					break;
				memset(&m, 0, sizeof(&m));
			} else if (m.hdrcount < MAX_HEADERS - 1)
				m.hdrcount++;
		} else if (res < 0)
			break;
	}
	if (s->authenticated) {
		if (option_verbose > 1) 
			ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged off from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
		ast_log(LOG_EVENT, "Manager '%s' logged off from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
	} else {
		if (option_verbose > 1)
			ast_verbose(VERBOSE_PREFIX_2 "Connect attempt from '%s' unable to authenticate\n", inet_ntoa(s->sin.sin_addr));
		ast_log(LOG_EVENT, "Failed attempt from %s\n", inet_ntoa(s->sin.sin_addr));
	}
	destroy_session(s);
	return NULL;
}

static void *accept_thread(void *ignore)
{
	int as;
	struct sockaddr_in sin;
	int sinlen;
	struct mansession *s;
	struct protoent *p;
	int arg = 1;
	pthread_attr_t attr;

	pthread_attr_init(&attr);
	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);

	for (;;) {
		sinlen = sizeof(sin);
		as = accept(asock, (struct sockaddr *)&sin, &sinlen);
		if (as < 0) {
			ast_log(LOG_NOTICE, "Accept returned -1: %s\n", strerror(errno));
			continue;
		}
		p = getprotobyname("tcp");
		if( p ) {
			if( setsockopt(as, p->p_proto, TCP_NODELAY, (char *)&arg, sizeof(arg) ) < 0 ) {
				ast_log(LOG_WARNING, "Failed to set manager tcp connection to TCP_NODELAY mode: %s\n", strerror(errno));
			}
		}
		s = malloc(sizeof(struct mansession));
		if (!s) {
			ast_log(LOG_WARNING, "Failed to allocate management session: %s\n", strerror(errno));
			continue;
		} 
		memset(s, 0, sizeof(struct mansession));
		memcpy(&s->sin, &sin, sizeof(sin));
		ast_mutex_init(&s->lock);
		s->fd = as;
		ast_mutex_lock(&sessionlock);
		s->next = sessions;
		sessions = s;
		ast_mutex_unlock(&sessionlock);
		if (pthread_create(&t, &attr, session_do, s))
			destroy_session(s);
	}
	pthread_attr_destroy(&attr);
	return NULL;
}

int manager_event(int category, char *event, char *fmt, ...)
{
	struct mansession *s;
	char tmp[4096];
	va_list ap;

	ast_mutex_lock(&sessionlock);
	s = sessions;
	while(s) {
		if ((s->readperm & category) == category) {
			ast_mutex_lock(&s->lock);
			if (!s->blocking) {
				ast_cli(s->fd, "Event: %s\r\n", event);
				va_start(ap, fmt);
				vsnprintf(tmp, sizeof(tmp), fmt, ap);
				va_end(ap);
				write(s->fd, tmp, strlen(tmp));
				ast_cli(s->fd, "\r\n");
			}
			ast_mutex_unlock(&s->lock);
		}
		s = s->next;
	}
	ast_mutex_unlock(&sessionlock);
	return 0;
}

int ast_manager_unregister( char *action ) {
	struct manager_action *cur = first_action, *prev = first_action;

	ast_mutex_lock(&actionlock);
	while( cur ) { 		
		if (!strcasecmp(action, cur->action)) {
			prev->next = cur->next;
			free(cur);
			if (option_verbose > 1) 
				ast_verbose(VERBOSE_PREFIX_2 "Manager unregistered action %s\n", action);
			ast_mutex_unlock(&actionlock);
			return 0;
		}
		prev = cur;
		cur = cur->next;
	}
	ast_mutex_unlock(&actionlock);
	return 0;
}

static int manager_state_cb(char *context, char *exten, int state, void *data)
{
	/* Notify managers of change */
	manager_event(EVENT_FLAG_CALL, "ExtensionStatus", "Exten: %s\r\nContext: %s\r\nStatus: %d\r\n", exten, context, state);
	return 0;
}

int ast_manager_register( char *action, int auth, 
	int (*func)(struct mansession *s, struct message *m), char *synopsis)
{
	struct manager_action *cur = first_action, *prev = NULL;

	ast_mutex_lock(&actionlock);
	while(cur) { /* Walk the list of actions */
		prev = cur; 
		cur = cur->next;
	}
	cur = malloc( sizeof(struct manager_action) );
	if( !cur ) {
		ast_log(LOG_WARNING, "Manager: out of memory trying to register action\n");
		ast_mutex_unlock(&actionlock);
		return -1;
	}
	strncpy( cur->action, action, 255 );
	cur->authority = auth;
	cur->func = func;
	cur->synopsis = synopsis;
	cur->next = NULL;

	if( prev ) prev->next = cur;
	else first_action = cur;

	if (option_verbose > 1) 
		ast_verbose(VERBOSE_PREFIX_2 "Manager registered action %s\n", action);
	ast_mutex_unlock(&actionlock);
	return 0;
}

static int registered = 0;

int init_manager(void)
{
	struct ast_config *cfg;
	char *val;
	int oldportno = portno;
	static struct sockaddr_in ba;
	int x = 1;
	if (!registered) {
		/* Register default actions */
		ast_manager_register( "Ping", 0, action_ping, "Ping" );
		ast_manager_register( "Logoff", 0, action_logoff, "Logoff Manager" );
		ast_manager_register( "Hangup", EVENT_FLAG_CALL, action_hangup, "Hangup Channel" );
		ast_manager_register( "Status", EVENT_FLAG_CALL, action_status, "Status" );
		ast_manager_register( "Redirect", EVENT_FLAG_CALL, action_redirect, "Redirect" );
		ast_manager_register( "Originate", EVENT_FLAG_CALL, action_originate, "Originate Call" );
		ast_manager_register( "MailboxStatus", EVENT_FLAG_CALL, action_mailboxstatus, "Check Mailbox" );
		ast_manager_register( "Command", EVENT_FLAG_COMMAND, action_command, "Execute Command" );
		ast_manager_register( "ExtensionState", EVENT_FLAG_CALL, action_extensionstate, "Check Extension Status" );
		ast_manager_register( "AbsoluteTimeout", EVENT_FLAG_CALL, action_timeout, "Set Absolute Timeout" );
		ast_manager_register( "MailboxCount", EVENT_FLAG_CALL, action_mailboxcount, "Check Mailbox Message Count" );

		ast_cli_register(&show_mancmds_cli);
		ast_cli_register(&show_manconn_cli);
		ast_extension_state_add(NULL, NULL, manager_state_cb, NULL);
		registered = 1;
	}
	portno = DEFAULT_MANAGER_PORT;
	cfg = ast_load("manager.conf");
	if (!cfg) {
		ast_log(LOG_NOTICE, "Unable to open management configuration manager.conf.  Call management disabled.\n");
		return 0;
	}
	memset(&ba, 0, sizeof(ba));
	val = ast_variable_retrieve(cfg, "general", "enabled");
	if (val)
		enabled = ast_true(val);

	if ((val = ast_variable_retrieve(cfg, "general", "portno"))) {
		if (sscanf(val, "%d", &portno) != 1) {
			ast_log(LOG_WARNING, "Invalid port number '%s'\n", val);
			portno = DEFAULT_MANAGER_PORT;
		}
	}
	
	ba.sin_family = AF_INET;
	ba.sin_port = htons(portno);
	memset(&ba.sin_addr, 0, sizeof(ba.sin_addr));
	
	if ((val = ast_variable_retrieve(cfg, "general", "bindaddr"))) {
		if (!inet_aton(val, &ba.sin_addr)) { 
			ast_log(LOG_WARNING, "Invalid address '%s' specified, using 0.0.0.0\n", val);
			memset(&ba.sin_addr, 0, sizeof(ba.sin_addr));
		}
	}

	if ((asock > -1) && ((portno != oldportno) || !enabled)) {
#if 0
		/* Can't be done yet */
		close(asock);
		asock = -1;
#else
		ast_log(LOG_WARNING, "Unable to change management port / enabled\n");
#endif
	}
	ast_destroy(cfg);
	
	/* If not enabled, do nothing */
	if (!enabled) {
		return 0;
	}
	if (asock < 0) {
		asock = socket(AF_INET, SOCK_STREAM, 0);
		if (asock < 0) {
			ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
			return -1;
		}
		setsockopt(asock, SOL_SOCKET, SO_REUSEADDR, &x, sizeof(x));
		if (bind(asock, (struct sockaddr *)&ba, sizeof(ba))) {
			ast_log(LOG_WARNING, "Unable to bind socket: %s\n", strerror(errno));
			close(asock);
			asock = -1;
			return -1;
		}
		if (listen(asock, 2)) {
			ast_log(LOG_WARNING, "Unable to listen on socket: %s\n", strerror(errno));
			close(asock);
			asock = -1;
			return -1;
		}
		if (option_verbose)
			ast_verbose("Asterisk Management interface listening on port %d\n", portno);
		pthread_create(&t, NULL, accept_thread, NULL);
	}
	return 0;
}

int reload_manager(void)
{
	manager_event(EVENT_FLAG_SYSTEM, "Reload", "Message: Reload Requested\r\n");
	return init_manager();
}