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 <sys/poll.h>
  29 #include <asterisk/channel.h>
  30 #include <asterisk/file.h>
  31 #include <asterisk/manager.h>
  32 #include <asterisk/config.h>
  33 #include <asterisk/lock.h>
  34 #include <asterisk/logger.h>
  35 #include <asterisk/options.h>
  36 #include <asterisk/cli.h>
  37 #include <asterisk/app.h>
  38 #include <asterisk/pbx.h>
  39 #include <asterisk/md5.h>
  40 #include <asterisk/acl.h>
  41 #include <asterisk/utils.h>
  42
  43 struct fast_originate_helper
  44 {
  45         char tech[256];
  46         char data[256];
  47         int timeout;
  48         char app[256];
  49         char appdata[256];
  50         char callerid[256];
  51         char variable[256];
  52         char account[256];
  53         char context[256];
  54         char exten[256];
  55         int priority;
  56 };
  57
  58 static int enabled = 0;
  59 static int portno = DEFAULT_MANAGER_PORT;
  60 static int asock = -1;
  61 static pthread_t t;
  62 static ast_mutex_t sessionlock = AST_MUTEX_INITIALIZER;
  63 static int block_sockets = 0;
  64
  65 static struct permalias {
  66         int num;
  67         char *label;
  68 } perms[] = {
  69         { EVENT_FLAG_SYSTEM, "system" },
  70         { EVENT_FLAG_CALL, "call" },
  71         { EVENT_FLAG_LOG, "log" },
  72         { EVENT_FLAG_VERBOSE, "verbose" },
  73         { EVENT_FLAG_COMMAND, "command" },
  74         { EVENT_FLAG_AGENT, "agent" },
  75         { EVENT_FLAG_USER, "user" },
  76         { -1, "all" },
  77 };
  78
  79 static struct mansession *sessions = NULL;
  80 static struct manager_action *first_action = NULL;
  81 static ast_mutex_t actionlock = AST_MUTEX_INITIALIZER;
  82
  83 int ast_carefulwrite(int fd, char *s, int len, int timeoutms)
  84 {
  85         /* Try to write string, but wait no more than ms milliseconds
  86            before timing out */
  87         int res=0;
  88         struct pollfd fds[1];
  89         while(len) {
  90                 res = write(fd, s, len);
  91                 if ((res < 0) && (errno != EAGAIN)) {
  92                         return -1;
  93                 }
  94                 if (res < 0) res = 0;
  95                 len -= res;
  96                 s += res;
  97                 fds[0].fd = fd;
  98                 fds[0].events = POLLOUT;
  99                 /* Wait until writable again */
 100                 res = poll(fds, 1, timeoutms);
 101                 if (res < 1)
 102                         return -1;
 103         }
 104         return res;
 105 }
 106
 107 static int handle_showmancmds(int fd, int argc, char *argv[])
 108 {
 109         struct manager_action *cur = first_action;
 110         char *format = "  %-15.15s  %-45.45s\n";
 111
 112         ast_mutex_lock(&actionlock);
 113         ast_cli(fd, format, "Action", "Synopsis");
 114         while(cur) { /* Walk the list of actions */
 115                 ast_cli(fd, format, cur->action, cur->synopsis);
 116                 cur = cur->next;
 117         }
 118
 119         ast_mutex_unlock(&actionlock);
 120         return RESULT_SUCCESS;
 121 }
 122
 123 static int handle_showmanconn(int fd, int argc, char *argv[])
 124 {
 125         struct mansession *s;
 126         char *format = "  %-15.15s  %-15.15s\n";
 127         ast_mutex_lock(&sessionlock);
 128         s = sessions;
 129         ast_cli(fd, format, "Username", "IP Address");
 130         while(s) {
 131                 ast_cli(fd, format,s->username, inet_ntoa(s->sin.sin_addr));
 132                 s = s->next;
 133         }
 134
 135         ast_mutex_unlock(&sessionlock);
 136         return RESULT_SUCCESS;
 137 }
 138
 139 static char showmancmds_help[] =
 140 "Usage: show manager commands\n"
 141 "       Prints a listing of all the available manager commands.\n";
 142
 143 static char showmanconn_help[] =
 144 "Usage: show manager connected\n"
 145 "       Prints a listing of the users that are connected to the\n"
 146 "manager interface.\n";
 147
 148 static struct ast_cli_entry show_mancmds_cli =
 149         { { "show", "manager", "commands", NULL },
 150         handle_showmancmds, "Show manager commands", showmancmds_help };
 151
 152 static struct ast_cli_entry show_manconn_cli =
 153         { { "show", "manager", "connected", NULL },
 154         handle_showmanconn, "Show connected manager users", showmanconn_help };
 155
 156 static void destroy_session(struct mansession *s)
 157 {
 158         struct mansession *cur, *prev = NULL;
 159         ast_mutex_lock(&sessionlock);
 160         cur = sessions;
 161         while(cur) {
 162                 if (cur == s)
 163                         break;
 164                 prev = cur;
 165                 cur = cur->next;
 166         }
 167         if (cur) {
 168                 if (prev)
 169                         prev->next = cur->next;
 170                 else
 171                         sessions = cur->next;
 172                 if (s->fd > -1)
 173                         close(s->fd);
 174                 free(s);
 175         } else
 176                 ast_log(LOG_WARNING, "Trying to delete non-existant session %p?\n", s);
 177         ast_mutex_unlock(&sessionlock);
 178
 179 }
 180
 181 char *astman_get_header(struct message *m, char *var)
 182 {
 183         char cmp[80];
 184         int x;
 185         snprintf(cmp, sizeof(cmp), "%s: ", var);
 186         for (x=0;x<m->hdrcount;x++)
 187                 if (!strncasecmp(cmp, m->headers[x], strlen(cmp)))
 188                         return m->headers[x] + strlen(cmp);
 189         return "";
 190 }
 191
 192 void astman_send_error(struct mansession *s, struct message *m, char *error)
 193 {
 194         char *id = astman_get_header(m,"ActionID");
 195         ast_mutex_lock(&s->lock);
 196         ast_cli(s->fd, "Response: Error\r\n");
 197         if (id && !ast_strlen_zero(id))
 198                 ast_cli(s->fd, "ActionID: %s\r\n",id);
 199         ast_cli(s->fd, "Message: %s\r\n\r\n", error);
 200         ast_mutex_unlock(&s->lock);
 201 }
 202
 203 void astman_send_response(struct mansession *s, struct message *m, char *resp, char *msg)
 204 {
 205         char *id = astman_get_header(m,"ActionID");
 206         ast_mutex_lock(&s->lock);
 207         ast_cli(s->fd, "Response: %s\r\n", resp);
 208         if (id && !ast_strlen_zero(id))
 209                 ast_cli(s->fd, "ActionID: %s\r\n",id);
 210         if (msg)
 211                 ast_cli(s->fd, "Message: %s\r\n\r\n", msg);
 212         else
 213                 ast_cli(s->fd, "\r\n");
 214         ast_mutex_unlock(&s->lock);
 215 }
 216
 217 void astman_send_ack(struct mansession *s, struct message *m, char *msg)
 218 {
 219         astman_send_response(s, m, "Success", msg);
 220 }
 221
 222 static int get_perm(char *instr)
 223 {
 224         char tmp[256];
 225         char *c;
 226         int x;
 227         int ret = 0;
 228         char *stringp=NULL;
 229         if (!instr)
 230                 return 0;
 231         strncpy(tmp, instr, sizeof(tmp) - 1);
 232         stringp=tmp;
 233         c = strsep(&stringp, ",");
 234         while(c) {
 235                 for (x=0;x<sizeof(perms) / sizeof(perms[0]);x++) {
 236                         if (!strcasecmp(perms[x].label, c))
 237                                 ret |= perms[x].num;
 238                 }
 239                 c = strsep(&stringp, ",");
 240         }
 241         return ret;
 242 }
 243
 244 static int set_eventmask(struct mansession *s, char *eventmask)
 245 {
 246         if (!eventmask)
 247                 return -1;
 248         if (!strcasecmp(eventmask, "on") || ast_true(eventmask)) {
 249                 ast_mutex_lock(&s->lock);
 250                 s->send_events = 1;
 251                 ast_mutex_unlock(&s->lock);
 252                 return 1;
 253         } else if (!strcasecmp(eventmask, "off") || ast_false(eventmask)) {
 254                 ast_mutex_lock(&s->lock);
 255                 s->send_events = 0;
 256                 ast_mutex_unlock(&s->lock);
 257                 return 0;
 258         }
 259         return -1;
 260 }
 261
 262 static int authenticate(struct mansession *s, struct message *m)
 263 {
 264         struct ast_config *cfg;
 265         char *cat;
 266         char *user = astman_get_header(m, "Username");
 267         char *pass = astman_get_header(m, "Secret");
 268         char *authtype = astman_get_header(m, "AuthType");
 269         char *key = astman_get_header(m, "Key");
 270         char *events = astman_get_header(m, "Events");
 271
 272         cfg = ast_load("manager.conf");
 273         if (!cfg)
 274                 return -1;
 275         cat = ast_category_browse(cfg, NULL);
 276         while(cat) {
 277                 if (strcasecmp(cat, "general")) {
 278                         /* This is a user */
 279                         if (!strcasecmp(cat, user)) {
 280                                 struct ast_variable *v;
 281                                 struct ast_ha *ha = NULL;
 282                                 char *password = NULL;
 283                                 v = ast_variable_browse(cfg, cat);
 284                                 while (v) {
 285                                         if (!strcasecmp(v->name, "secret")) {
 286                                                 password = v->value;
 287                                         } else if (!strcasecmp(v->name, "permit") ||
 288                                                    !strcasecmp(v->name, "deny")) {
 289                                                         ha = ast_append_ha(v->name, v->value, ha);
 290                                         }
 291                                         v = v->next;
 292                                 }
 293                                 if (ha && !ast_apply_ha(ha, &(s->sin))) {
 294                                         ast_log(LOG_NOTICE, "%s failed to pass IP ACL as '%s'\n", inet_ntoa(s->sin.sin_addr), user);
 295                                         ast_free_ha(ha);
 296                                         ast_destroy(cfg);
 297                                         return -1;
 298                                 } else if (ha)
 299                                         ast_free_ha(ha);
 300                                 if (!strcasecmp(authtype, "MD5")) {
 301                                         if (key && !ast_strlen_zero(key) && s->challenge) {
 302                                                 int x;
 303                                                 int len=0;
 304                                                 char md5key[256] = "";
 305                                                 struct MD5Context md5;
 306                                                 unsigned char digest[16];
 307                                                 MD5Init(&md5);
 308                                                 MD5Update(&md5, s->challenge, strlen(s->challenge));
 309                                                 MD5Update(&md5, password, strlen(password));
 310                                                 MD5Final(digest, &md5);
 311                                                 for (x=0;x<16;x++)
 312                                                         len += sprintf(md5key + len, "%2.2x", digest[x]);
 313                                                 if (!strcmp(md5key, key))
 314                                                         break;
 315                                                 else {
 316                                                         ast_destroy(cfg);
 317                                                         return -1;
 318                                                 }
 319                                         }
 320                                 } else if (password && !strcasecmp(password, pass)) {
 321                                         break;
 322                                 } else {
 323                                         ast_log(LOG_NOTICE, "%s failed to authenticate as '%s'\n", inet_ntoa(s->sin.sin_addr), user);
 324                                         ast_destroy(cfg);
 325                                         return -1;
 326                                 }
 327                         }
 328                 }
 329                 cat = ast_category_browse(cfg, cat);
 330         }
 331         if (cat) {
 332                 strncpy(s->username, cat, sizeof(s->username) - 1);
 333                 s->readperm = get_perm(ast_variable_retrieve(cfg, cat, "read"));
 334                 s->writeperm = get_perm(ast_variable_retrieve(cfg, cat, "write"));
 335                 ast_destroy(cfg);
 336                 if (events)
 337                         set_eventmask(s, events);
 338                 return 0;
 339         }
 340         ast_log(LOG_NOTICE, "%s tried to authenticate with non-existant user '%s'\n", inet_ntoa(s->sin.sin_addr), user);
 341         ast_destroy(cfg);
 342         return -1;
 343 }
 344
 345 static int action_ping(struct mansession *s, struct message *m)
 346 {
 347         astman_send_response(s, m, "Pong", NULL);
 348         return 0;
 349 }
 350
 351 static int action_events(struct mansession *s, struct message *m)
 352 {
 353         char *mask = astman_get_header(m, "EventMask");
 354         int res;
 355
 356         res = set_eventmask(s, mask);
 357         if (res > 0)
 358                 astman_send_response(s, m, "Events On", NULL);
 359         else if (res == 0)
 360                 astman_send_response(s, m, "Events Off", NULL);
 361         else
 362                 astman_send_response(s, m, "EventMask parse error", NULL);
 363         return 0;
 364 }
 365
 366 static int action_logoff(struct mansession *s, struct message *m)
 367 {
 368         astman_send_response(s, m, "Goodbye", "Thanks for all the fish.");
 369         return -1;
 370 }
 371
 372 static int action_hangup(struct mansession *s, struct message *m)
 373 {
 374         struct ast_channel *c = NULL;
 375         char *name = astman_get_header(m, "Channel");
 376         if (ast_strlen_zero(name)) {
 377                 astman_send_error(s, m, "No channel specified");
 378                 return 0;
 379         }
 380         c = ast_channel_walk_locked(NULL);
 381         while(c) {
 382                 if (!strcasecmp(c->name, name)) {
 383                         break;
 384                 }
 385                 ast_mutex_unlock(&c->lock);
 386                 c = ast_channel_walk_locked(c);
 387         }
 388         if (!c) {
 389                 astman_send_error(s, m, "No such channel");
 390                 return 0;
 391         }
 392         ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
 393         ast_mutex_unlock(&c->lock);
 394         astman_send_ack(s, m, "Channel Hungup");
 395         return 0;
 396 }
 397
 398 static int action_status(struct mansession *s, struct message *m)
 399 {
 400         char *id = astman_get_header(m,"ActionID");
 401         char idText[256] = "";
 402         struct ast_channel *c;
 403         char bridge[256];
 404         astman_send_ack(s, m, "Channel status will follow");
 405         c = ast_channel_walk_locked(NULL);
 406         if (id && !ast_strlen_zero(id))
 407                 snprintf(idText,256,"ActionID: %s\r\n",id);
 408         while(c) {
 409                 if (c->bridge)
 410                         snprintf(bridge, sizeof(bridge), "Link: %s\r\n", c->bridge->name);
 411                 else
 412                         strcpy(bridge, "");
 413                 if (c->pbx) {
 414                         ast_cli(s->fd,
 415                         "Event: Status\r\n"
 416                         "Channel: %s\r\n"
 417                         "CallerID: %s\r\n"
 418                         "State: %s\r\n"
 419                         "Context: %s\r\n"
 420                         "Extension: %s\r\n"
 421                         "Priority: %d\r\n"
 422                         "%s"
 423                         "Uniqueid: %s\r\n"
 424                         "%s"
 425                         "\r\n",
 426                         c->name, c->callerid ? c->callerid : "<unknown>",
 427                         ast_state2str(c->_state), c->context,
 428                         c->exten, c->priority, bridge, c->uniqueid, idText);
 429                 } else {
 430                         ast_cli(s->fd,
 431                         "Event: Status\r\n"
 432                         "Channel: %s\r\n"
 433                         "CallerID: %s\r\n"
 434                         "State: %s\r\n"
 435                         "%s"
 436                         "Uniqueid: %s\r\n"
 437                         "%s"
 438                         "\r\n",
 439                         c->name, c->callerid ? c->callerid : "<unknown>",
 440                         ast_state2str(c->_state), bridge, c->uniqueid, idText);
 441                 }
 442                 ast_mutex_unlock(&c->lock);
 443                 c = ast_channel_walk_locked(c);
 444         }
 445         ast_cli(s->fd,
 446         "Event: StatusComplete\r\n"
 447         "%s"
 448         "\r\n",idText);
 449         return 0;
 450 }
 451
 452 static int action_redirect(struct mansession *s, struct message *m)
 453 {
 454         char *name = astman_get_header(m, "Channel");
 455         char *name2 = astman_get_header(m, "ExtraChannel");
 456         char *exten = astman_get_header(m, "Exten");
 457         char *context = astman_get_header(m, "Context");
 458         char *priority = astman_get_header(m, "Priority");
 459         struct ast_channel *chan, *chan2 = NULL;
 460         int pi = 0;
 461         int res;
 462         if (!name || ast_strlen_zero(name)) {
 463                 astman_send_error(s, m, "Channel not specified");
 464                 return 0;
 465         }
 466         if (!ast_strlen_zero(priority) && (sscanf(priority, "%d", &pi) != 1)) {
 467                 astman_send_error(s, m, "Invalid priority\n");
 468                 return 0;
 469         }
 470         chan = ast_get_channel_by_name_locked(name);
 471         if (!chan) {
 472                 astman_send_error(s, m, "Channel not existant");
 473                 return 0;
 474         }
 475         if (!ast_strlen_zero(name2))
 476                 chan2 = ast_get_channel_by_name_locked(name2);
 477         res = ast_async_goto(chan, context, exten, pi);
 478         if (!res) {
 479                 if (!ast_strlen_zero(name2)) {
 480                         if (chan2)
 481                                 res = ast_async_goto(chan2, context, exten, pi);
 482                         else
 483                                 res = -1;
 484                         if (!res)
 485                                 astman_send_ack(s, m, "Dual Redirect successful");
 486                         else
 487                                 astman_send_error(s, m, "Secondary redirect failed");
 488                 } else
 489                         astman_send_ack(s, m, "Redirect successful");
 490         } else
 491                 astman_send_error(s, m, "Redirect failed");
 492         if (chan)
 493                 ast_mutex_unlock(&chan->lock);
 494         if (chan2)
 495                 ast_mutex_unlock(&chan2->lock);
 496         return 0;
 497 }
 498
 499 static int action_command(struct mansession *s, struct message *m)
 500 {
 501         char *cmd = astman_get_header(m, "Command");
 502         char *id = astman_get_header(m, "ActionID");
 503         ast_mutex_lock(&s->lock);
 504         s->blocking = 1;
 505         ast_mutex_unlock(&s->lock);
 506         ast_cli(s->fd, "Response: Follows\r\n");
 507         if (id && !ast_strlen_zero(id))
 508                 ast_cli(s->fd, "ActionID: %s\r\n", id);
 509         /* FIXME: Wedge a ActionID response in here, waiting for later changes */
 510         ast_cli_command(s->fd, cmd);
 511         ast_cli(s->fd, "--END COMMAND--\r\n\r\n");
 512         ast_mutex_lock(&s->lock);
 513         s->blocking = 0;
 514         ast_mutex_unlock(&s->lock);
 515         return 0;
 516 }
 517
 518 static void *fast_originate(void *data)
 519 {
 520         struct fast_originate_helper *in = data;
 521         int res;
 522         int reason = 0;
 523         if (!ast_strlen_zero(in->app)) {
 524                 res = ast_pbx_outgoing_app(in->tech, AST_FORMAT_SLINEAR, in->data, in->timeout, in->app, in->appdata, &reason, 1, !ast_strlen_zero(in->callerid) ? in->callerid : NULL, in->variable, in->account);
 525         } else {
 526                 res = ast_pbx_outgoing_exten(in->tech, AST_FORMAT_SLINEAR, in->data, in->timeout, in->context, in->exten, in->priority, &reason, 1, !ast_strlen_zero(in->callerid) ? in->callerid : NULL, in->variable, in->account);
 527         }
 528         free(in);
 529         return NULL;
 530 }
 531
 532 static int action_originate(struct mansession *s, struct message *m)
 533 {
 534         char *name = astman_get_header(m, "Channel");
 535         char *exten = astman_get_header(m, "Exten");
 536         char *context = astman_get_header(m, "Context");
 537         char *priority = astman_get_header(m, "Priority");
 538         char *timeout = astman_get_header(m, "Timeout");
 539         char *callerid = astman_get_header(m, "CallerID");
 540         char *variable = astman_get_header(m, "Variable");
 541         char *account = astman_get_header(m, "Account");
 542         char *app = astman_get_header(m, "Application");
 543         char *appdata = astman_get_header(m, "Data");
 544         char *async = astman_get_header(m, "Async");
 545         char *tech, *data;
 546         int pi = 0;
 547         int res;
 548         int to = 30000;
 549         int reason = 0;
 550         char tmp[256];
 551         pthread_t th;
 552         pthread_attr_t attr;
 553         if (!name) {
 554                 astman_send_error(s, m, "Channel not specified");
 555                 return 0;
 556         }
 557         if (!ast_strlen_zero(priority) && (sscanf(priority, "%d", &pi) != 1)) {
 558                 astman_send_error(s, m, "Invalid priority\n");
 559                 return 0;
 560         }
 561         if (!ast_strlen_zero(timeout) && (sscanf(timeout, "%d", &to) != 1)) {
 562                 astman_send_error(s, m, "Invalid timeout\n");
 563                 return 0;
 564         }
 565         strncpy(tmp, name, sizeof(tmp) - 1);
 566         tech = tmp;
 567         data = strchr(tmp, '/');
 568         if (!data) {
 569                 astman_send_error(s, m, "Invalid channel\n");
 570                 return 0;
 571         }
 572         *data = '\0';
 573         data++;
 574         if (ast_true(async))
 575         {
 576                 struct fast_originate_helper *fast = malloc(sizeof(struct fast_originate_helper));
 577                 if (!fast)
 578                 {
 579                         res = -1;
 580                 }
 581                 else
 582                 {
 583                         memset(fast, 0, sizeof(struct fast_originate_helper));
 584                         strncpy(fast->tech, tech, sizeof(fast->tech) - 1);
 585                         strncpy(fast->data, data, sizeof(fast->data) - 1);
 586                         strncpy(fast->app, app, sizeof(fast->app) - 1);
 587                         strncpy(fast->appdata, appdata, sizeof(fast->appdata) - 1);
 588                         strncpy(fast->callerid, callerid, sizeof(fast->callerid) - 1);
 589                         strncpy(fast->variable, variable, sizeof(fast->variable) - 1);
 590                         strncpy(fast->account, account, sizeof(fast->account) - 1);
 591                         strncpy(fast->context, context, sizeof(fast->context) - 1);
 592                         strncpy(fast->exten, exten, sizeof(fast->exten) - 1);
 593                         fast->timeout = to;
 594                         fast->priority = pi;
 595                         pthread_attr_init(&attr);
 596                         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 597                         if (pthread_create(&th, &attr, fast_originate, fast))
 598                         {
 599                                 res = -1;
 600                         }
 601                         else
 602                         {
 603                                 res = 0;
 604                         }
 605                 }
 606         } else if (!ast_strlen_zero(app)) {
 607                 res = ast_pbx_outgoing_app(tech, AST_FORMAT_SLINEAR, data, to, app, appdata, &reason, 0, !ast_strlen_zero(callerid) ? callerid : NULL, variable, account);
 608         } else {
 609                 if (exten && context && pi)
 610                         res = ast_pbx_outgoing_exten(tech, AST_FORMAT_SLINEAR, data, to, context, exten, pi, &reason, 0, !ast_strlen_zero(callerid) ? callerid : NULL, variable, account);
 611                 else {
 612                         astman_send_error(s, m, "Originate with 'Exten' requires 'Context' and 'Priority'");
 613                         return 0;
 614                 }
 615         }
 616         if (!res)
 617                 astman_send_ack(s, m, "Originate successfully queued");
 618         else
 619                 astman_send_error(s, m, "Originate failed");
 620         return 0;
 621 }
 622
 623 static int action_mailboxstatus(struct mansession *s, struct message *m)
 624 {
 625         char *mailbox = astman_get_header(m, "Mailbox");
 626         char *id = astman_get_header(m,"ActionID");
 627         char idText[256] = "";
 628         if (!mailbox || ast_strlen_zero(mailbox)) {
 629                 astman_send_error(s, m, "Mailbox not specified");
 630                 return 0;
 631         }
 632         if (id && !ast_strlen_zero(id))
 633                 snprintf(idText,256,"ActionID: %s\r\n",id);
 634         ast_cli(s->fd, "Response: Success\r\n"
 635                                    "%s"
 636                                    "Message: Mailbox Status\r\n"
 637                                    "Mailbox: %s\r\n"
 638                                    "Waiting: %d\r\n\r\n", idText, mailbox, ast_app_has_voicemail(mailbox));
 639         return 0;
 640 }
 641
 642 static int action_mailboxcount(struct mansession *s, struct message *m)
 643 {
 644         char *mailbox = astman_get_header(m, "Mailbox");
 645         char *id = astman_get_header(m,"ActionID");
 646         char idText[256] = "";
 647         int newmsgs = 0, oldmsgs = 0;
 648         if (!mailbox || ast_strlen_zero(mailbox)) {
 649                 astman_send_error(s, m, "Mailbox not specified");
 650                 return 0;
 651         }
 652         ast_app_messagecount(mailbox, &newmsgs, &oldmsgs);
 653         if (id && !ast_strlen_zero(id)) {
 654                 snprintf(idText,256,"ActionID: %s\r\n",id);
 655         }
 656         ast_cli(s->fd, "Response: Success\r\n"
 657                                    "%s"
 658                                    "Message: Mailbox Message Count\r\n"
 659                                    "Mailbox: %s\r\n"
 660                                    "NewMessages: %d\r\n"
 661                                    "OldMessages: %d\r\n"
 662                                    "\r\n",
 663                                     idText,mailbox, newmsgs, oldmsgs);
 664         return 0;
 665 }
 666
 667 static int action_extensionstate(struct mansession *s, struct message *m)
 668 {
 669         char *exten = astman_get_header(m, "Exten");
 670         char *context = astman_get_header(m, "Context");
 671         char *id = astman_get_header(m,"ActionID");
 672         char idText[256] = "";
 673         char hint[256] = "";
 674         int status;
 675         if (!exten || ast_strlen_zero(exten)) {
 676                 astman_send_error(s, m, "Extension not specified");
 677                 return 0;
 678         }
 679         if (!context || ast_strlen_zero(context))
 680                 context = "default";
 681         status = ast_extension_state(NULL, context, exten);
 682         ast_get_hint(hint, sizeof(hint) - 1, NULL, context, exten);
 683         if (id && !ast_strlen_zero(id)) {
 684                 snprintf(idText,256,"ActionID: %s\r\n",id);
 685         }
 686         ast_cli(s->fd, "Response: Success\r\n"
 687                                    "%s"
 688                                    "Message: Extension Status\r\n"
 689                                    "Exten: %s\r\n"
 690                                    "Context: %s\r\n"
 691                                    "Hint: %s\r\n"
 692                                    "Status: %d\r\n\r\n",
 693                                    idText,exten, context, hint, status);
 694         return 0;
 695 }
 696
 697 static int action_timeout(struct mansession *s, struct message *m)
 698 {
 699         struct ast_channel *c = NULL;
 700         char *name = astman_get_header(m, "Channel");
 701         int timeout = atoi(astman_get_header(m, "Timeout"));
 702         if (ast_strlen_zero(name)) {
 703                 astman_send_error(s, m, "No channel specified");
 704                 return 0;
 705         }
 706         if (!timeout) {
 707                 astman_send_error(s, m, "No timeout specified");
 708                 return 0;
 709         }
 710         c = ast_channel_walk_locked(NULL);
 711         while(c) {
 712                 if (!strcasecmp(c->name, name)) {
 713                         break;
 714                 }
 715                 ast_mutex_unlock(&c->lock);
 716                 c = ast_channel_walk_locked(c);
 717         }
 718         if (!c) {
 719                 astman_send_error(s, m, "No such channel");
 720                 return 0;
 721         }
 722         ast_channel_setwhentohangup(c, timeout);
 723         ast_mutex_unlock(&c->lock);
 724         astman_send_ack(s, m, "Timeout Set");
 725         return 0;
 726 }
 727
 728 static int process_message(struct mansession *s, struct message *m)
 729 {
 730         char action[80];
 731         struct manager_action *tmp = first_action;
 732         char *id = astman_get_header(m,"ActionID");
 733         char idText[256] = "";
 734
 735         strncpy(action, astman_get_header(m, "Action"), sizeof(action));
 736         ast_log( LOG_DEBUG, "Manager received command '%s'\n", action );
 737
 738         if (ast_strlen_zero(action)) {
 739                 astman_send_error(s, m, "Missing action in request");
 740                 return 0;
 741         }
 742         if (id && !ast_strlen_zero(id)) {
 743                 snprintf(idText,256,"ActionID: %s\r\n",id);
 744         }
 745         if (!s->authenticated) {
 746                 if (!strcasecmp(action, "Challenge")) {
 747                         char *authtype;
 748                         authtype = astman_get_header(m, "AuthType");
 749                         if (!strcasecmp(authtype, "MD5")) {
 750                                 if (!s->challenge || ast_strlen_zero(s->challenge)) {
 751                                         ast_mutex_lock(&s->lock);
 752                                         snprintf(s->challenge, sizeof(s->challenge), "%d", rand());
 753                                         ast_mutex_unlock(&s->lock);
 754                                 }
 755                                 ast_cli(s->fd, "Response: Success\r\n"
 756                                                 "%s"
 757                                                 "Challenge: %s\r\n\r\n",
 758                                                 idText,s->challenge);
 759                                 return 0;
 760                         } else {
 761                                 astman_send_error(s, m, "Must specify AuthType");
 762                                 return 0;
 763                         }
 764                 } else if (!strcasecmp(action, "Login")) {
 765                         if (authenticate(s, m)) {
 766                                 sleep(1);
 767                                 astman_send_error(s, m, "Authentication failed");
 768                                 return -1;
 769                         } else {
 770                                 s->authenticated = 1;
 771                                 if (option_verbose > 1)
 772                                         ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged on from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
 773                                 ast_log(LOG_EVENT, "Manager '%s' logged on from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
 774                                 astman_send_ack(s, m, "Authentication accepted");
 775                         }
 776                 } else if (!strcasecmp(action, "Logoff")) {
 777                         astman_send_ack(s, m, "See ya");
 778                         return -1;
 779                 } else
 780                         astman_send_error(s, m, "Authentication Required");
 781         } else {
 782                 while( tmp ) {
 783                         if (!strcasecmp(action, tmp->action)) {
 784                                 if ((s->writeperm & tmp->authority) == tmp->authority) {
 785                                         if (tmp->func(s, m))
 786                                                 return -1;
 787                                 } else {
 788                                         astman_send_error(s, m, "Permission denied");
 789                                 }
 790                                 return 0;
 791                         }
 792                         tmp = tmp->next;
 793                 }
 794                 astman_send_error(s, m, "Invalid/unknown command");
 795         }
 796         return 0;
 797 }
 798
 799 static int get_input(struct mansession *s, char *output)
 800 {
 801         /* output must have at least sizeof(s->inbuf) space */
 802         int res;
 803         int x;
 804         struct pollfd fds[1];
 805         for (x=1;x<s->inlen;x++) {
 806                 if ((s->inbuf[x] == '\n') && (s->inbuf[x-1] == '\r')) {
 807                         /* Copy output data up to and including \r\n */
 808                         memcpy(output, s->inbuf, x + 1);
 809                         /* Add trailing \0 */
 810                         output[x+1] = '\0';
 811                         /* Move remaining data back to the front */
 812                         memmove(s->inbuf, s->inbuf + x + 1, s->inlen - x);
 813                         s->inlen -= (x + 1);
 814                         return 1;
 815                 }
 816         }
 817         if (s->inlen >= sizeof(s->inbuf) - 1) {
 818                 ast_log(LOG_WARNING, "Dumping long line with no return from %s: %s\n", inet_ntoa(s->sin.sin_addr), s->inbuf);
 819                 s->inlen = 0;
 820         }
 821         fds[0].fd = s->fd;
 822         fds[0].events = POLLIN;
 823         res = poll(fds, 1, -1);
 824         if (res < 0) {
 825                 ast_log(LOG_WARNING, "Select returned error: %s\n", strerror(errno));
 826         } else if (res > 0) {
 827                 ast_mutex_lock(&s->lock);
 828                 res = read(s->fd, s->inbuf + s->inlen, sizeof(s->inbuf) - 1 - s->inlen);
 829                 ast_mutex_unlock(&s->lock);
 830                 if (res < 1)
 831                         return -1;
 832         }
 833         s->inlen += res;
 834         s->inbuf[s->inlen] = '\0';
 835         return 0;
 836 }
 837
 838 static void *session_do(void *data)
 839 {
 840         struct mansession *s = data;
 841         struct message m;
 842         int res;
 843
 844         ast_mutex_lock(&s->lock);
 845         ast_cli(s->fd, "Asterisk Call Manager/1.0\r\n");
 846         ast_mutex_unlock(&s->lock);
 847         memset(&m, 0, sizeof(&m));
 848         for (;;) {
 849                 res = get_input(s, m.headers[m.hdrcount]);
 850                 if (res > 0) {
 851                         /* Strip trailing \r\n */
 852                         if (strlen(m.headers[m.hdrcount]) < 2)
 853                                 continue;
 854                         m.headers[m.hdrcount][strlen(m.headers[m.hdrcount]) - 2] = '\0';
 855                         if (ast_strlen_zero(m.headers[m.hdrcount])) {
 856                                 if (process_message(s, &m))
 857                                         break;
 858                                 memset(&m, 0, sizeof(&m));
 859                         } else if (m.hdrcount < MAX_HEADERS - 1)
 860                                 m.hdrcount++;
 861                 } else if (res < 0)
 862                         break;
 863         }
 864         if (s->authenticated) {
 865                 if (option_verbose > 1)
 866                         ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged off from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
 867                 ast_log(LOG_EVENT, "Manager '%s' logged off from %s\n", s->username, inet_ntoa(s->sin.sin_addr));
 868         } else {
 869                 if (option_verbose > 1)
 870                         ast_verbose(VERBOSE_PREFIX_2 "Connect attempt from '%s' unable to authenticate\n", inet_ntoa(s->sin.sin_addr));
 871                 ast_log(LOG_EVENT, "Failed attempt from %s\n", inet_ntoa(s->sin.sin_addr));
 872         }
 873         destroy_session(s);
 874         return NULL;
 875 }
 876
 877 static void *accept_thread(void *ignore)
 878 {
 879         int as;
 880         struct sockaddr_in sin;
 881         int sinlen;
 882         struct mansession *s;
 883         struct protoent *p;
 884         int arg = 1;
 885         int flags;
 886         pthread_attr_t attr;
 887
 888         pthread_attr_init(&attr);
 889         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 890
 891         for (;;) {
 892                 sinlen = sizeof(sin);
 893                 as = accept(asock, (struct sockaddr *)&sin, &sinlen);
 894                 if (as < 0) {
 895                         ast_log(LOG_NOTICE, "Accept returned -1: %s\n", strerror(errno));
 896                         continue;
 897                 }
 898                 p = getprotobyname("tcp");
 899                 if( p ) {
 900                         if( setsockopt(as, p->p_proto, TCP_NODELAY, (char *)&arg, sizeof(arg) ) < 0 ) {
 901                                 ast_log(LOG_WARNING, "Failed to set manager tcp connection to TCP_NODELAY mode: %s\n", strerror(errno));
 902                         }
 903                 }
 904                 s = malloc(sizeof(struct mansession));
 905                 if (!s) {
 906                         ast_log(LOG_WARNING, "Failed to allocate management session: %s\n", strerror(errno));
 907                         continue;
 908                 }
 909                 memset(s, 0, sizeof(struct mansession));
 910                 memcpy(&s->sin, &sin, sizeof(sin));
 911
 912                 if(! block_sockets) {
 913                         /* For safety, make sure socket is non-blocking */
 914                         flags = fcntl(as, F_GETFL);
 915                         fcntl(as, F_SETFL, flags | O_NONBLOCK);
 916                 }
 917                 ast_mutex_init(&s->lock);
 918                 s->fd = as;
 919                 s->send_events = 1;
 920                 ast_mutex_lock(&sessionlock);
 921                 s->next = sessions;
 922                 sessions = s;
 923                 ast_mutex_unlock(&sessionlock);
 924                 if (pthread_create(&t, &attr, session_do, s))
 925                         destroy_session(s);
 926         }
 927         pthread_attr_destroy(&attr);
 928         return NULL;
 929 }
 930
 931 int manager_event(int category, char *event, char *fmt, ...)
 932 {
 933         struct mansession *s;
 934         char tmp[4096];
 935         va_list ap;
 936
 937         ast_mutex_lock(&sessionlock);
 938         s = sessions;
 939         while(s) {
 940                 if (((s->readperm & category) == category) && s->send_events) {
 941                         ast_mutex_lock(&s->lock);
 942                         if (!s->blocking) {
 943                                 ast_cli(s->fd, "Event: %s\r\n", event);
 944                                 va_start(ap, fmt);
 945                                 vsnprintf(tmp, sizeof(tmp), fmt, ap);
 946                                 va_end(ap);
 947                                 ast_carefulwrite(s->fd,tmp,strlen(tmp),100);
 948                                 ast_cli(s->fd, "\r\n");
 949                         }
 950                         ast_mutex_unlock(&s->lock);
 951                 }
 952                 s = s->next;
 953         }
 954         ast_mutex_unlock(&sessionlock);
 955         return 0;
 956 }
 957
 958 int ast_manager_unregister( char *action ) {
 959         struct manager_action *cur = first_action, *prev = first_action;
 960
 961         ast_mutex_lock(&actionlock);
 962         while( cur ) {
 963                 if (!strcasecmp(action, cur->action)) {
 964                         prev->next = cur->next;
 965                         free(cur);
 966                         if (option_verbose > 1)
 967                                 ast_verbose(VERBOSE_PREFIX_2 "Manager unregistered action %s\n", action);
 968                         ast_mutex_unlock(&actionlock);
 969                         return 0;
 970                 }
 971                 prev = cur;
 972                 cur = cur->next;
 973         }
 974         ast_mutex_unlock(&actionlock);
 975         return 0;
 976 }
 977
 978 static int manager_state_cb(char *context, char *exten, int state, void *data)
 979 {
 980         /* Notify managers of change */
 981         manager_event(EVENT_FLAG_CALL, "ExtensionStatus", "Exten: %s\r\nContext: %s\r\nStatus: %d\r\n", exten, context, state);
 982         return 0;
 983 }
 984
 985 int ast_manager_register( char *action, int auth,
 986         int (*func)(struct mansession *s, struct message *m), char *synopsis)
 987 {
 988         struct manager_action *cur = first_action, *prev = NULL;
 989
 990         ast_mutex_lock(&actionlock);
 991         while(cur) { /* Walk the list of actions */
 992                 if (!strcasecmp(cur->action, action)) {
 993                         ast_log(LOG_WARNING, "Manager: Action '%s' already registered\n", action);
 994                         ast_mutex_unlock(&actionlock);
 995                         return -1;
 996                 }
 997                 prev = cur;
 998                 cur = cur->next;
 999         }
1000         cur = malloc( sizeof(struct manager_action) );
1001         if( !cur ) {
1002                 ast_log(LOG_WARNING, "Manager: out of memory trying to register action\n");
1003                 ast_mutex_unlock(&actionlock);
1004                 return -1;
1005         }
1006         strncpy( cur->action, action, 255 );
1007         cur->authority = auth;
1008         cur->func = func;
1009         cur->synopsis = synopsis;
1010         cur->next = NULL;
1011
1012         if( prev ) prev->next = cur;
1013         else first_action = cur;
1014
1015         if (option_verbose > 1)
1016                 ast_verbose(VERBOSE_PREFIX_2 "Manager registered action %s\n", action);
1017         ast_mutex_unlock(&actionlock);
1018         return 0;
1019 }
1020
1021 static int registered = 0;
1022
1023 int init_manager(void)
1024 {
1025         struct ast_config *cfg;
1026         char *val;
1027         int oldportno = portno;
1028         static struct sockaddr_in ba;
1029         int x = 1;
1030         if (!registered) {
1031                 /* Register default actions */
1032                 ast_manager_register( "Ping", 0, action_ping, "Ping" );
1033                 ast_manager_register( "Events", 0, action_events, "Contol Event Flow" );
1034                 ast_manager_register( "Logoff", 0, action_logoff, "Logoff Manager" );
1035                 ast_manager_register( "Hangup", EVENT_FLAG_CALL, action_hangup, "Hangup Channel" );
1036                 ast_manager_register( "Status", EVENT_FLAG_CALL, action_status, "Status" );
1037                 ast_manager_register( "Redirect", EVENT_FLAG_CALL, action_redirect, "Redirect" );
1038                 ast_manager_register( "Originate", EVENT_FLAG_CALL, action_originate, "Originate Call" );
1039                 ast_manager_register( "MailboxStatus", EVENT_FLAG_CALL, action_mailboxstatus, "Check Mailbox" );
1040                 ast_manager_register( "Command", EVENT_FLAG_COMMAND, action_command, "Execute Command" );
1041                 ast_manager_register( "ExtensionState", EVENT_FLAG_CALL, action_extensionstate, "Check Extension Status" );
1042                 ast_manager_register( "AbsoluteTimeout", EVENT_FLAG_CALL, action_timeout, "Set Absolute Timeout" );
1043                 ast_manager_register( "MailboxCount", EVENT_FLAG_CALL, action_mailboxcount, "Check Mailbox Message Count" );
1044
1045                 ast_cli_register(&show_mancmds_cli);
1046                 ast_cli_register(&show_manconn_cli);
1047                 ast_extension_state_add(NULL, NULL, manager_state_cb, NULL);
1048                 registered = 1;
1049         }
1050         portno = DEFAULT_MANAGER_PORT;
1051         cfg = ast_load("manager.conf");
1052         if (!cfg) {
1053                 ast_log(LOG_NOTICE, "Unable to open management configuration manager.conf.  Call management disabled.\n");
1054                 return 0;
1055         }
1056         memset(&ba, 0, sizeof(ba));
1057         val = ast_variable_retrieve(cfg, "general", "enabled");
1058         if (val)
1059                 enabled = ast_true(val);
1060
1061         val = ast_variable_retrieve(cfg, "general", "block-sockets");
1062         if(val)
1063                 block_sockets = ast_true(val);
1064
1065         if ((val = ast_variable_retrieve(cfg, "general", "port"))) {
1066                 if (sscanf(val, "%d", &portno) != 1) {
1067                         ast_log(LOG_WARNING, "Invalid port number '%s'\n", val);
1068                         portno = DEFAULT_MANAGER_PORT;
1069                 }
1070         } else if ((val = ast_variable_retrieve(cfg, "general", "portno"))) {
1071                 if (sscanf(val, "%d", &portno) != 1) {
1072                         ast_log(LOG_WARNING, "Invalid port number '%s'\n", val);
1073                         portno = DEFAULT_MANAGER_PORT;
1074                 }
1075                 ast_log(LOG_NOTICE, "Use of portno in manager.conf deprecated.  Please use 'port=%s' instead.\n", val);
1076         }
1077
1078         ba.sin_family = AF_INET;
1079         ba.sin_port = htons(portno);
1080         memset(&ba.sin_addr, 0, sizeof(ba.sin_addr));
1081
1082         if ((val = ast_variable_retrieve(cfg, "general", "bindaddr"))) {
1083                 if (!inet_aton(val, &ba.sin_addr)) {
1084                         ast_log(LOG_WARNING, "Invalid address '%s' specified, using 0.0.0.0\n", val);
1085                         memset(&ba.sin_addr, 0, sizeof(ba.sin_addr));
1086                 }
1087         }
1088
1089         if ((asock > -1) && ((portno != oldportno) || !enabled)) {
1090 #if 0
1091                 /* Can't be done yet */
1092                 close(asock);
1093                 asock = -1;
1094 #else
1095                 ast_log(LOG_WARNING, "Unable to change management port / enabled\n");
1096 #endif
1097         }
1098         ast_destroy(cfg);
1099
1100         /* If not enabled, do nothing */
1101         if (!enabled) {
1102                 return 0;
1103         }
1104         if (asock < 0) {
1105                 asock = socket(AF_INET, SOCK_STREAM, 0);
1106                 if (asock < 0) {
1107                         ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
1108                         return -1;
1109                 }
1110                 setsockopt(asock, SOL_SOCKET, SO_REUSEADDR, &x, sizeof(x));
1111                 if (bind(asock, (struct sockaddr *)&ba, sizeof(ba))) {
1112                         ast_log(LOG_WARNING, "Unable to bind socket: %s\n", strerror(errno));
1113                         close(asock);
1114                         asock = -1;
1115                         return -1;
1116                 }
1117                 if (listen(asock, 2)) {
1118                         ast_log(LOG_WARNING, "Unable to listen on socket: %s\n", strerror(errno));
1119                         close(asock);
1120                         asock = -1;
1121                         return -1;
1122                 }
1123                 if (option_verbose)
1124                         ast_verbose("Asterisk Management interface listening on port %d\n", portno);
1125                 pthread_create(&t, NULL, accept_thread, NULL);
1126         }
1127         return 0;
1128 }
1129
1130 int reload_manager(void)
1131 {
1132         manager_event(EVENT_FLAG_SYSTEM, "Reload", "Message: Reload Requested\r\n");
1133         return init_manager();
1134 }