asterisk.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2005, Digium, Inc.
   5  *
   6  * Mark Spencer <markster@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19
  20 /* Doxygenified Copyright Header */
  21 /*!
  22  * \mainpage Asterisk -- An Open Source Telephony Toolkit
  23  *
  24  * \arg \ref DevDoc
  25  * \arg \ref ConfigFiles
  26  *
  27  * \section copyright Copyright and author
  28  *
  29  * Copyright (C) 1999 - 2005, Digium, Inc.
  30  * Asterisk is a trade mark registered by Digium, Inc.
  31  *
  32  * \author Mark Spencer <markster@digium.com>
  33  * Also see \ref AstCREDITS
  34  *
  35  * \section license License
  36  * See http://www.asterisk.org for more information about
  37  * the Asterisk project. Please do not directly contact
  38  * any of the maintainers of this project for assistance;
  39  * the project provides a web site, mailing lists and IRC
  40  * channels for your use.
  41  *
  42  * This program is free software, distributed under the terms of
  43  * the GNU General Public License Version 2. See the LICENSE file
  44  * at the top of the source tree.
  45  *
  46  * \verbinclude LICENSE
  47  *
  48  */
  49
  50 /*! \file
  51   \brief Top level source file for Asterisk  - the Open Source PBX. Implementation
  52   of PBX core functions and CLI interface.
  53
  54  */
  55
  56 #include <unistd.h>
  57 #include <stdlib.h>
  58 #include <sys/time.h>
  59 #include <fcntl.h>
  60 #include <stdio.h>
  61 #include <signal.h>
  62 #include <sched.h>
  63 #include <sys/socket.h>
  64 #include <sys/un.h>
  65 #include <sys/wait.h>
  66 #include <string.h>
  67 #include <errno.h>
  68 #include <ctype.h>
  69 #include <sys/resource.h>
  70 #include <grp.h>
  71 #include <pwd.h>
  72 #include <sys/stat.h>
  73 #include <regex.h>
  74
  75 #if  defined(__FreeBSD__) || defined( __NetBSD__ ) || defined(SOLARIS)
  76 #include <netdb.h>
  77 #endif
  78
  79 #include "asterisk.h"
  80
  81 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  82
  83 #include "asterisk/logger.h"
  84 #include "asterisk/options.h"
  85 #include "asterisk/cli.h"
  86 #include "asterisk/channel.h"
  87 #include "asterisk/ulaw.h"
  88 #include "asterisk/alaw.h"
  89 #include "asterisk/callerid.h"
  90 #include "asterisk/module.h"
  91 #include "asterisk/image.h"
  92 #include "asterisk/tdd.h"
  93 #include "asterisk/term.h"
  94 #include "asterisk/manager.h"
  95 #include "asterisk/cdr.h"
  96 #include "asterisk/pbx.h"
  97 #include "asterisk/enum.h"
  98 #include "asterisk/rtp.h"
  99 #include "asterisk/app.h"
 100 #include "asterisk/lock.h"
 101 #include "asterisk/utils.h"
 102 #include "asterisk/file.h"
 103 #include "asterisk/io.h"
 104 #include "asterisk/lock.h"
 105 #include "editline/histedit.h"
 106 #include "asterisk/config.h"
 107 #include "asterisk/version.h"
 108 #include "asterisk/linkedlists.h"
 109 #include "asterisk/devicestate.h"
 110
 111 #include "asterisk/doxyref.h"           /* Doxygen documentation */
 112
 113 #include "defaults.h"
 114
 115 #ifndef AF_LOCAL
 116 #define AF_LOCAL AF_UNIX
 117 #define PF_LOCAL PF_UNIX
 118 #endif
 119
 120 #define AST_MAX_CONNECTS 128
 121 #define NUM_MSGS 64
 122
 123 #define WELCOME_MESSAGE ast_verbose( "Asterisk " ASTERISK_VERSION ", Copyright (C) 1999 - 2005 Digium.\n"); \
 124                 ast_verbose( "Written by Mark Spencer <markster@digium.com>\n"); \
 125                 ast_verbose( "=========================================================================\n")
 126
 127 int option_verbose=0;
 128 int option_debug=0;
 129 int option_exec_includes=0;
 130 int option_nofork=0;
 131 int option_quiet=0;
 132 int option_console=0;
 133 int option_highpriority=0;
 134 int option_remote=0;
 135 int option_exec=0;
 136 int option_initcrypto=0;
 137 int option_nocolor;
 138 int option_dumpcore = 0;
 139 int option_cache_record_files = 0;
 140 int option_timestamp = 0;
 141 int option_overrideconfig = 0;
 142 int option_reconnect = 0;
 143 int option_transcode_slin = 1;
 144 int option_transmit_silence_during_record = 0;
 145 int option_maxcalls = 0;
 146 double option_maxload = 0.0;
 147 int option_dontwarn = 0;
 148 int option_priority_jumping = 1;
 149 int fully_booted = 0;
 150 char record_cache_dir[AST_CACHE_DIR_LEN] = AST_TMP_DIR;
 151 char debug_filename[AST_FILENAME_MAX] = "";
 152
 153 static int ast_socket = -1;             /*!< UNIX Socket for allowing remote control */
 154 static int ast_consock = -1;            /*!< UNIX Socket for controlling another asterisk */
 155 int ast_mainpid;
 156 struct console {
 157         int fd;                         /*!< File descriptor */
 158         int p[2];                       /*!< Pipe */
 159         pthread_t t;                    /*!< Thread of handler */
 160 };
 161
 162 static struct ast_atexit {
 163         void (*func)(void);
 164         struct ast_atexit *next;
 165 } *atexits = NULL;
 166
 167 AST_MUTEX_DEFINE_STATIC(atexitslock);
 168
 169 time_t ast_startuptime;
 170 time_t ast_lastreloadtime;
 171
 172 static History *el_hist = NULL;
 173 static EditLine *el = NULL;
 174 static char *remotehostname;
 175
 176 struct console consoles[AST_MAX_CONNECTS];
 177
 178 char defaultlanguage[MAX_LANGUAGE] = DEFAULT_LANGUAGE;
 179
 180 static int ast_el_add_history(char *);
 181 static int ast_el_read_history(char *);
 182 static int ast_el_write_history(char *);
 183
 184 char ast_config_AST_CONFIG_DIR[AST_CONFIG_MAX_PATH];
 185 char ast_config_AST_CONFIG_FILE[AST_CONFIG_MAX_PATH];
 186 char ast_config_AST_MODULE_DIR[AST_CONFIG_MAX_PATH];
 187 char ast_config_AST_SPOOL_DIR[AST_CONFIG_MAX_PATH];
 188 char ast_config_AST_MONITOR_DIR[AST_CONFIG_MAX_PATH];
 189 char ast_config_AST_VAR_DIR[AST_CONFIG_MAX_PATH];
 190 char ast_config_AST_LOG_DIR[AST_CONFIG_MAX_PATH];
 191 char ast_config_AST_AGI_DIR[AST_CONFIG_MAX_PATH];
 192 char ast_config_AST_DB[AST_CONFIG_MAX_PATH];
 193 char ast_config_AST_KEY_DIR[AST_CONFIG_MAX_PATH];
 194 char ast_config_AST_PID[AST_CONFIG_MAX_PATH];
 195 char ast_config_AST_SOCKET[AST_CONFIG_MAX_PATH];
 196 char ast_config_AST_RUN_DIR[AST_CONFIG_MAX_PATH];
 197 char ast_config_AST_CTL_PERMISSIONS[AST_CONFIG_MAX_PATH];
 198 char ast_config_AST_CTL_OWNER[AST_CONFIG_MAX_PATH] = "\0";
 199 char ast_config_AST_CTL_GROUP[AST_CONFIG_MAX_PATH] = "\0";
 200 char ast_config_AST_CTL[AST_CONFIG_MAX_PATH] = "asterisk.ctl";
 201
 202 static char *_argv[256];
 203 static int shuttingdown = 0;
 204 static int restartnow = 0;
 205 static pthread_t consolethread = AST_PTHREADT_NULL;
 206
 207 #if !defined(LOW_MEMORY)
 208 struct file_version {
 209         AST_LIST_ENTRY(file_version) list;
 210         const char *file;
 211         char *version;
 212 };
 213
 214 static AST_LIST_HEAD_STATIC(file_versions, file_version);
 215
 216 void ast_register_file_version(const char *file, const char *version)
 217 {
 218         struct file_version *new;
 219         char *work;
 220         size_t version_length;
 221
 222         work = ast_strdupa(version);
 223         work = ast_strip(ast_strip_quoted(work, "$", "$"));
 224         version_length = strlen(work) + 1;
 225
 226         new = calloc(1, sizeof(*new) + version_length);
 227         if (!new)
 228                 return;
 229
 230         new->file = file;
 231         new->version = (char *) new + sizeof(*new);
 232         memcpy(new->version, work, version_length);
 233         AST_LIST_LOCK(&file_versions);
 234         AST_LIST_INSERT_HEAD(&file_versions, new, list);
 235         AST_LIST_UNLOCK(&file_versions);
 236 }
 237
 238 void ast_unregister_file_version(const char *file)
 239 {
 240         struct file_version *find;
 241
 242         AST_LIST_LOCK(&file_versions);
 243         AST_LIST_TRAVERSE_SAFE_BEGIN(&file_versions, find, list) {
 244                 if (!strcasecmp(find->file, file)) {
 245                         AST_LIST_REMOVE_CURRENT(&file_versions, list);
 246                         break;
 247                 }
 248         }
 249         AST_LIST_TRAVERSE_SAFE_END;
 250         AST_LIST_UNLOCK(&file_versions);
 251         if (find)
 252                 free(find);
 253 }
 254
 255 static char show_version_files_help[] =
 256 "Usage: show version files [like <pattern>]\n"
 257 "       Shows the revision numbers of the files used to build this copy of Asterisk.\n"
 258 "       Optional regular expression pattern is used to filter the file list.\n";
 259
 260 /*! CLI command to list module versions */
 261 static int handle_show_version_files(int fd, int argc, char *argv[])
 262 {
 263 #define FORMAT "%-25.25s %-40.40s\n"
 264         struct file_version *iterator;
 265         regex_t regexbuf;
 266         int havepattern = 0;
 267         int havename = 0;
 268         int count_files = 0;
 269
 270         switch (argc) {
 271         case 5:
 272                 if (!strcasecmp(argv[3], "like")) {
 273                         if (regcomp(&regexbuf, argv[4], REG_EXTENDED | REG_NOSUB))
 274                                 return RESULT_SHOWUSAGE;
 275                         havepattern = 1;
 276                 } else
 277                         return RESULT_SHOWUSAGE;
 278                 break;
 279         case 4:
 280                 havename = 1;
 281                 break;
 282         case 3:
 283                 break;
 284         default:
 285                 return RESULT_SHOWUSAGE;
 286         }
 287
 288         ast_cli(fd, FORMAT, "File", "Revision");
 289         ast_cli(fd, FORMAT, "----", "--------");
 290         AST_LIST_LOCK(&file_versions);
 291         AST_LIST_TRAVERSE(&file_versions, iterator, list) {
 292                 if (havename && strcasecmp(iterator->file, argv[3]))
 293                         continue;
 294
 295                 if (havepattern && regexec(&regexbuf, iterator->file, 0, NULL, 0))
 296                         continue;
 297
 298                 ast_cli(fd, FORMAT, iterator->file, iterator->version);
 299                 count_files++;
 300                 if (havename)
 301                         break;
 302         }
 303         AST_LIST_UNLOCK(&file_versions);
 304         if (!havename) {
 305                 ast_cli(fd, "%d files listed.\n", count_files);
 306         }
 307
 308         if (havepattern)
 309                 regfree(&regexbuf);
 310
 311         return RESULT_SUCCESS;
 312 #undef FORMAT
 313 }
 314
 315 static char *complete_show_version_files(char *line, char *word, int pos, int state)
 316 {
 317         struct file_version *find;
 318         int which = 0;
 319         char *ret = NULL;
 320         int matchlen = strlen(word);
 321
 322         if (pos != 3)
 323                 return NULL;
 324
 325         AST_LIST_LOCK(&file_versions);
 326         AST_LIST_TRAVERSE(&file_versions, find, list) {
 327                 if (!strncasecmp(word, find->file, matchlen)) {
 328                         if (++which > state) {
 329                                 ret = strdup(find->file);
 330                                 break;
 331                         }
 332                 }
 333         }
 334         AST_LIST_UNLOCK(&file_versions);
 335
 336         return ret;
 337 }
 338 #endif /* ! LOW_MEMORY */
 339
 340 int ast_register_atexit(void (*func)(void))
 341 {
 342         int res = -1;
 343         struct ast_atexit *ae;
 344         ast_unregister_atexit(func);
 345         ae = malloc(sizeof(struct ast_atexit));
 346         ast_mutex_lock(&atexitslock);
 347         if (ae) {
 348                 memset(ae, 0, sizeof(struct ast_atexit));
 349                 ae->next = atexits;
 350                 ae->func = func;
 351                 atexits = ae;
 352                 res = 0;
 353         }
 354         ast_mutex_unlock(&atexitslock);
 355         return res;
 356 }
 357
 358 void ast_unregister_atexit(void (*func)(void))
 359 {
 360         struct ast_atexit *ae, *prev = NULL;
 361         ast_mutex_lock(&atexitslock);
 362         ae = atexits;
 363         while(ae) {
 364                 if (ae->func == func) {
 365                         if (prev)
 366                                 prev->next = ae->next;
 367                         else
 368                                 atexits = ae->next;
 369                         break;
 370                 }
 371                 prev = ae;
 372                 ae = ae->next;
 373         }
 374         ast_mutex_unlock(&atexitslock);
 375 }
 376
 377 static int fdprint(int fd, const char *s)
 378 {
 379         return write(fd, s, strlen(s) + 1);
 380 }
 381
 382 /*! NULL handler so we can collect the child exit status */
 383 static void null_sig_handler(int signal)
 384 {
 385
 386 }
 387
 388 AST_MUTEX_DEFINE_STATIC(safe_system_lock);
 389 static unsigned int safe_system_level = 0;
 390 static void *safe_system_prev_handler;
 391
 392 int ast_safe_system(const char *s)
 393 {
 394         pid_t pid;
 395         int x;
 396         int res;
 397         struct rusage rusage;
 398         int status;
 399         unsigned int level;
 400
 401         /* keep track of how many ast_safe_system() functions
 402            are running at this moment
 403         */
 404         ast_mutex_lock(&safe_system_lock);
 405         level = safe_system_level++;
 406
 407         /* only replace the handler if it has not already been done */
 408         if (level == 0)
 409                 safe_system_prev_handler = signal(SIGCHLD, null_sig_handler);
 410
 411         ast_mutex_unlock(&safe_system_lock);
 412
 413         pid = fork();
 414
 415         if (pid == 0) {
 416                 /* Close file descriptors and launch system command */
 417                 for (x = STDERR_FILENO + 1; x < 4096; x++)
 418                         close(x);
 419                 execl("/bin/sh", "/bin/sh", "-c", s, NULL);
 420                 exit(1);
 421         } else if (pid > 0) {
 422                 for(;;) {
 423                         res = wait4(pid, &status, 0, &rusage);
 424                         if (res > -1) {
 425                                 res = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
 426                                 break;
 427                         } else if (errno != EINTR)
 428                                 break;
 429                 }
 430         } else {
 431                 ast_log(LOG_WARNING, "Fork failed: %s\n", strerror(errno));
 432                 res = -1;
 433         }
 434
 435         ast_mutex_lock(&safe_system_lock);
 436         level = --safe_system_level;
 437
 438         /* only restore the handler if we are the last one */
 439         if (level == 0)
 440                 signal(SIGCHLD, safe_system_prev_handler);
 441
 442         ast_mutex_unlock(&safe_system_lock);
 443
 444         return res;
 445 }
 446
 447 /*!
 448  * write the string to all attached console clients
 449  */
 450 static void ast_network_puts(const char *string)
 451 {
 452         int x;
 453         for (x=0;x<AST_MAX_CONNECTS; x++) {
 454                 if (consoles[x].fd > -1)
 455                         fdprint(consoles[x].p[1], string);
 456         }
 457 }
 458
 459 /*!
 460  * write the string to the console, and all attached
 461  * console clients
 462  */
 463 void ast_console_puts(const char *string)
 464 {
 465         fputs(string, stdout);
 466         fflush(stdout);
 467         ast_network_puts(string);
 468 }
 469
 470 static void network_verboser(const char *s, int pos, int replace, int complete)
 471         /* ARGUSED */
 472 {
 473         if (replace) {
 474                 char *t = alloca(strlen(s) + 2);
 475                 if (t) {
 476                         sprintf(t, "\r%s", s);
 477                         if (complete)
 478                                 ast_network_puts(t);
 479                 } else {
 480                         ast_log(LOG_ERROR, "Out of memory\n");
 481                         ast_network_puts(s);
 482                 }
 483         } else {
 484                 if (complete)
 485                         ast_network_puts(s);
 486         }
 487 }
 488
 489 static pthread_t lthread;
 490
 491 static void *netconsole(void *vconsole)
 492 {
 493         struct console *con = vconsole;
 494         char hostname[MAXHOSTNAMELEN]="";
 495         char tmp[512];
 496         int res;
 497         struct pollfd fds[2];
 498
 499         if (gethostname(hostname, sizeof(hostname)-1))
 500                 ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
 501         snprintf(tmp, sizeof(tmp), "%s/%d/%s\n", hostname, ast_mainpid, ASTERISK_VERSION);
 502         fdprint(con->fd, tmp);
 503         for(;;) {
 504                 fds[0].fd = con->fd;
 505                 fds[0].events = POLLIN;
 506                 fds[0].revents = 0;
 507                 fds[1].fd = con->p[0];
 508                 fds[1].events = POLLIN;
 509                 fds[1].revents = 0;
 510
 511                 res = poll(fds, 2, -1);
 512                 if (res < 0) {
 513                         if (errno != EINTR)
 514                                 ast_log(LOG_WARNING, "poll returned < 0: %s\n", strerror(errno));
 515                         continue;
 516                 }
 517                 if (fds[0].revents) {
 518                         res = read(con->fd, tmp, sizeof(tmp));
 519                         if (res < 1) {
 520                                 break;
 521                         }
 522                         tmp[res] = 0;
 523                         ast_cli_command(con->fd, tmp);
 524                 }
 525                 if (fds[1].revents) {
 526                         res = read(con->p[0], tmp, sizeof(tmp));
 527                         if (res < 1) {
 528                                 ast_log(LOG_ERROR, "read returned %d\n", res);
 529                                 break;
 530                         }
 531                         res = write(con->fd, tmp, res);
 532                         if (res < 1)
 533                                 break;
 534                 }
 535         }
 536         if (option_verbose > 2)
 537                 ast_verbose(VERBOSE_PREFIX_3 "Remote UNIX connection disconnected\n");
 538         close(con->fd);
 539         close(con->p[0]);
 540         close(con->p[1]);
 541         con->fd = -1;
 542
 543         return NULL;
 544 }
 545
 546 static void *listener(void *unused)
 547 {
 548         struct sockaddr_un sunaddr;
 549         int s;
 550         socklen_t len;
 551         int x;
 552         int flags;
 553         struct pollfd fds[1];
 554         pthread_attr_t attr;
 555         pthread_attr_init(&attr);
 556         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 557         for(;;) {
 558                 if (ast_socket < 0)
 559                         return NULL;
 560                 fds[0].fd = ast_socket;
 561                 fds[0].events= POLLIN;
 562                 s = poll(fds, 1, -1);
 563                 if (s < 0) {
 564                         if (errno != EINTR)
 565                                 ast_log(LOG_WARNING, "poll returned error: %s\n", strerror(errno));
 566                         continue;
 567                 }
 568                 len = sizeof(sunaddr);
 569                 s = accept(ast_socket, (struct sockaddr *)&sunaddr, &len);
 570                 if (s < 0) {
 571                         if (errno != EINTR)
 572                                 ast_log(LOG_WARNING, "Accept returned %d: %s\n", s, strerror(errno));
 573                 } else {
 574                         for (x=0;x<AST_MAX_CONNECTS;x++) {
 575                                 if (consoles[x].fd < 0) {
 576                                         if (socketpair(AF_LOCAL, SOCK_STREAM, 0, consoles[x].p)) {
 577                                                 ast_log(LOG_ERROR, "Unable to create pipe: %s\n", strerror(errno));
 578                                                 consoles[x].fd = -1;
 579                                                 fdprint(s, "Server failed to create pipe\n");
 580                                                 close(s);
 581                                                 break;
 582                                         }
 583                                         flags = fcntl(consoles[x].p[1], F_GETFL);
 584                                         fcntl(consoles[x].p[1], F_SETFL, flags | O_NONBLOCK);
 585                                         consoles[x].fd = s;
 586                                         if (ast_pthread_create(&consoles[x].t, &attr, netconsole, &consoles[x])) {
 587                                                 ast_log(LOG_ERROR, "Unable to spawn thread to handle connection: %s\n", strerror(errno));
 588                                                 consoles[x].fd = -1;
 589                                                 fdprint(s, "Server failed to spawn thread\n");
 590                                                 close(s);
 591                                         }
 592                                         break;
 593                                 }
 594                         }
 595                         if (x >= AST_MAX_CONNECTS) {
 596                                 fdprint(s, "No more connections allowed\n");
 597                                 ast_log(LOG_WARNING, "No more connections allowed\n");
 598                                 close(s);
 599                         } else if (consoles[x].fd > -1) {
 600                                 if (option_verbose > 2)
 601                                         ast_verbose(VERBOSE_PREFIX_3 "Remote UNIX connection\n");
 602                         }
 603                 }
 604         }
 605         return NULL;
 606 }
 607
 608 static int ast_makesocket(void)
 609 {
 610         struct sockaddr_un sunaddr;
 611         int res;
 612         int x;
 613         uid_t uid = -1;
 614         gid_t gid = -1;
 615
 616         for (x = 0; x < AST_MAX_CONNECTS; x++)
 617                 consoles[x].fd = -1;
 618         unlink(ast_config_AST_SOCKET);
 619         ast_socket = socket(PF_LOCAL, SOCK_STREAM, 0);
 620         if (ast_socket < 0) {
 621                 ast_log(LOG_WARNING, "Unable to create control socket: %s\n", strerror(errno));
 622                 return -1;
 623         }
 624         memset(&sunaddr, 0, sizeof(sunaddr));
 625         sunaddr.sun_family = AF_LOCAL;
 626         ast_copy_string(sunaddr.sun_path, ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
 627         res = bind(ast_socket, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
 628         if (res) {
 629                 ast_log(LOG_WARNING, "Unable to bind socket to %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
 630                 close(ast_socket);
 631                 ast_socket = -1;
 632                 return -1;
 633         }
 634         res = listen(ast_socket, 2);
 635         if (res < 0) {
 636                 ast_log(LOG_WARNING, "Unable to listen on socket %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
 637                 close(ast_socket);
 638                 ast_socket = -1;
 639                 return -1;
 640         }
 641         ast_register_verbose(network_verboser);
 642         ast_pthread_create(&lthread, NULL, listener, NULL);
 643
 644         if (!ast_strlen_zero(ast_config_AST_CTL_OWNER)) {
 645                 struct passwd *pw;
 646                 if ((pw = getpwnam(ast_config_AST_CTL_OWNER)) == NULL) {
 647                         ast_log(LOG_WARNING, "Unable to find uid of user %s\n", ast_config_AST_CTL_OWNER);
 648                 } else {
 649                         uid = pw->pw_uid;
 650                 }
 651         }
 652
 653         if (!ast_strlen_zero(ast_config_AST_CTL_GROUP)) {
 654                 struct group *grp;
 655                 if ((grp = getgrnam(ast_config_AST_CTL_GROUP)) == NULL) {
 656                         ast_log(LOG_WARNING, "Unable to find gid of group %s\n", ast_config_AST_CTL_GROUP);
 657                 } else {
 658                         gid = grp->gr_gid;
 659                 }
 660         }
 661
 662         if (chown(ast_config_AST_SOCKET, uid, gid) < 0)
 663                 ast_log(LOG_WARNING, "Unable to change ownership of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
 664
 665         if (!ast_strlen_zero(ast_config_AST_CTL_PERMISSIONS)) {
 666                 mode_t p;
 667                 sscanf(ast_config_AST_CTL_PERMISSIONS, "%o", (int *) &p);
 668                 if ((chmod(ast_config_AST_SOCKET, p)) < 0)
 669                         ast_log(LOG_WARNING, "Unable to change file permissions of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
 670         }
 671
 672         return 0;
 673 }
 674
 675 static int ast_tryconnect(void)
 676 {
 677         struct sockaddr_un sunaddr;
 678         int res;
 679         ast_consock = socket(PF_LOCAL, SOCK_STREAM, 0);
 680         if (ast_consock < 0) {
 681                 ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
 682                 return 0;
 683         }
 684         memset(&sunaddr, 0, sizeof(sunaddr));
 685         sunaddr.sun_family = AF_LOCAL;
 686         ast_copy_string(sunaddr.sun_path, (char *)ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
 687         res = connect(ast_consock, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
 688         if (res) {
 689                 close(ast_consock);
 690                 ast_consock = -1;
 691                 return 0;
 692         } else
 693                 return 1;
 694 }
 695
 696 /*! Urgent handler
 697  Called by soft_hangup to interrupt the poll, read, or other
 698  system call.  We don't actually need to do anything though.
 699  Remember: Cannot EVER ast_log from within a signal handler
 700  SLD: seems to be some pthread activity relating to the printf anyway:
 701  which is leading to a deadlock?
 702  */
 703 static void urg_handler(int num)
 704 {
 705 #if 0
 706         if (option_debug > 2)
 707                 printf("-- Asterisk Urgent handler\n");
 708 #endif
 709         signal(num, urg_handler);
 710         return;
 711 }
 712
 713 static void hup_handler(int num)
 714 {
 715         if (option_verbose > 1)
 716                 printf("Received HUP signal -- Reloading configs\n");
 717         if (restartnow)
 718                 execvp(_argv[0], _argv);
 719         /* XXX This could deadlock XXX */
 720         ast_module_reload(NULL);
 721         signal(num, hup_handler);
 722 }
 723
 724 static void child_handler(int sig)
 725 {
 726         /* Must not ever ast_log or ast_verbose within signal handler */
 727         int n, status;
 728
 729         /*
 730          * Reap all dead children -- not just one
 731          */
 732         for (n = 0; wait4(-1, &status, WNOHANG, NULL) > 0; n++)
 733                 ;
 734         if (n == 0 && option_debug)
 735                 printf("Huh?  Child handler, but nobody there?\n");
 736         signal(sig, child_handler);
 737 }
 738
 739 /*! Set an X-term or screen title */
 740 static void set_title(char *text)
 741 {
 742         if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
 743                 fprintf(stdout, "\033]2;%s\007", text);
 744 }
 745
 746 static void set_icon(char *text)
 747 {
 748         if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
 749                 fprintf(stdout, "\033]1;%s\007", text);
 750 }
 751
 752 /*! We set ourselves to a high priority, that we might pre-empt everything
 753    else.  If your PBX has heavy activity on it, this is a good thing.  */
 754 int ast_set_priority(int pri)
 755 {
 756         struct sched_param sched;
 757         memset(&sched, 0, sizeof(sched));
 758 #ifdef __linux__
 759         if (pri) {
 760                 sched.sched_priority = 10;
 761                 if (sched_setscheduler(0, SCHED_RR, &sched)) {
 762                         ast_log(LOG_WARNING, "Unable to set high priority\n");
 763                         return -1;
 764                 } else
 765                         if (option_verbose)
 766                                 ast_verbose("Set to realtime thread\n");
 767         } else {
 768                 sched.sched_priority = 0;
 769                 if (sched_setscheduler(0, SCHED_OTHER, &sched)) {
 770                         ast_log(LOG_WARNING, "Unable to set normal priority\n");
 771                         return -1;
 772                 }
 773         }
 774 #else
 775         if (pri) {
 776                 if (setpriority(PRIO_PROCESS, 0, -10) == -1) {
 777                         ast_log(LOG_WARNING, "Unable to set high priority\n");
 778                         return -1;
 779                 } else
 780                         if (option_verbose)
 781                                 ast_verbose("Set to high priority\n");
 782         } else {
 783                 if (setpriority(PRIO_PROCESS, 0, 0) == -1) {
 784                         ast_log(LOG_WARNING, "Unable to set normal priority\n");
 785                         return -1;
 786                 }
 787         }
 788 #endif
 789         return 0;
 790 }
 791
 792 static void ast_run_atexits(void)
 793 {
 794         struct ast_atexit *ae;
 795         ast_mutex_lock(&atexitslock);
 796         ae = atexits;
 797         while(ae) {
 798                 if (ae->func)
 799                         ae->func();
 800                 ae = ae->next;
 801         }
 802         ast_mutex_unlock(&atexitslock);
 803 }
 804
 805 static void quit_handler(int num, int nice, int safeshutdown, int restart)
 806 {
 807         char filename[80] = "";
 808         time_t s,e;
 809         int x;
 810         /* Try to get as many CDRs as possible submitted to the backend engines (if in batch mode) */
 811         ast_cdr_engine_term();
 812         if (safeshutdown) {
 813                 shuttingdown = 1;
 814                 if (!nice) {
 815                         /* Begin shutdown routine, hanging up active channels */
 816                         ast_begin_shutdown(1);
 817                         if (option_verbose && option_console)
 818                                 ast_verbose("Beginning asterisk %s....\n", restart ? "restart" : "shutdown");
 819                         time(&s);
 820                         for(;;) {
 821                                 time(&e);
 822                                 /* Wait up to 15 seconds for all channels to go away */
 823                                 if ((e - s) > 15)
 824                                         break;
 825                                 if (!ast_active_channels())
 826                                         break;
 827                                 if (!shuttingdown)
 828                                         break;
 829                                 /* Sleep 1/10 of a second */
 830                                 usleep(100000);
 831                         }
 832                 } else {
 833                         if (nice < 2)
 834                                 ast_begin_shutdown(0);
 835                         if (option_verbose && option_console)
 836                                 ast_verbose("Waiting for inactivity to perform %s...\n", restart ? "restart" : "halt");
 837                         for(;;) {
 838                                 if (!ast_active_channels())
 839                                         break;
 840                                 if (!shuttingdown)
 841                                         break;
 842                                 sleep(1);
 843                         }
 844                 }
 845
 846                 if (!shuttingdown) {
 847                         if (option_verbose && option_console)
 848                                 ast_verbose("Asterisk %s cancelled.\n", restart ? "restart" : "shutdown");
 849                         return;
 850                 }
 851         }
 852         if (option_console || option_remote) {
 853                 if (getenv("HOME"))
 854                         snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
 855                 if (!ast_strlen_zero(filename))
 856                         ast_el_write_history(filename);
 857                 if (el != NULL)
 858                         el_end(el);
 859                 if (el_hist != NULL)
 860                         history_end(el_hist);
 861         }
 862         if (option_verbose)
 863                 ast_verbose("Executing last minute cleanups\n");
 864         ast_run_atexits();
 865         /* Called on exit */
 866         if (option_verbose && option_console)
 867                 ast_verbose("Asterisk %s ending (%d).\n", ast_active_channels() ? "uncleanly" : "cleanly", num);
 868         else if (option_debug)
 869                 ast_log(LOG_DEBUG, "Asterisk ending (%d).\n", num);
 870         manager_event(EVENT_FLAG_SYSTEM, "Shutdown", "Shutdown: %s\r\nRestart: %s\r\n", ast_active_channels() ? "Uncleanly" : "Cleanly", restart ? "True" : "False");
 871         if (ast_socket > -1) {
 872                 close(ast_socket);
 873                 ast_socket = -1;
 874         }
 875         if (ast_consock > -1)
 876                 close(ast_consock);
 877         if (ast_socket > -1)
 878                 unlink((char *)ast_config_AST_SOCKET);
 879         if (!option_remote) unlink((char *)ast_config_AST_PID);
 880         printf(term_quit());
 881         if (restart) {
 882                 if (option_verbose || option_console)
 883                         ast_verbose("Preparing for Asterisk restart...\n");
 884                 /* Mark all FD's for closing on exec */
 885                 for (x=3;x<32768;x++) {
 886                         fcntl(x, F_SETFD, FD_CLOEXEC);
 887                 }
 888                 if (option_verbose || option_console)
 889                         ast_verbose("Restarting Asterisk NOW...\n");
 890                 restartnow = 1;
 891
 892                 /* close logger */
 893                 close_logger();
 894
 895                 /* If there is a consolethread running send it a SIGHUP
 896                    so it can execvp, otherwise we can do it ourselves */
 897                 if ((consolethread != AST_PTHREADT_NULL) && (consolethread != pthread_self())) {
 898                         pthread_kill(consolethread, SIGHUP);
 899                         /* Give the signal handler some time to complete */
 900                         sleep(2);
 901                 } else
 902                         execvp(_argv[0], _argv);
 903
 904         } else {
 905                 /* close logger */
 906                 close_logger();
 907         }
 908         exit(0);
 909 }
 910
 911 static void __quit_handler(int num)
 912 {
 913         quit_handler(num, 0, 1, 0);
 914 }
 915
 916 static const char *fix_header(char *outbuf, int maxout, const char *s, char *cmp)
 917 {
 918         const char *c;
 919         if (!strncmp(s, cmp, strlen(cmp))) {
 920                 c = s + strlen(cmp);
 921                 term_color(outbuf, cmp, COLOR_GRAY, 0, maxout);
 922                 return c;
 923         }
 924         return NULL;
 925 }
 926
 927 static void console_verboser(const char *s, int pos, int replace, int complete)
 928 {
 929         char tmp[80];
 930         const char *c=NULL;
 931         /* Return to the beginning of the line */
 932         if (!pos) {
 933                 fprintf(stdout, "\r");
 934                 if ((c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_4)) ||
 935                         (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_3)) ||
 936                         (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_2)) ||
 937                         (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_1)))
 938                         fputs(tmp, stdout);
 939         }
 940         if (c)
 941                 fputs(c + pos,stdout);
 942         else
 943                 fputs(s + pos,stdout);
 944         fflush(stdout);
 945         if (complete) {
 946                 /* Wake up a poll()ing console */
 947                 if (option_console && consolethread != AST_PTHREADT_NULL)
 948                         pthread_kill(consolethread, SIGURG);
 949         }
 950 }
 951
 952 static int ast_all_zeros(char *s)
 953 {
 954         while(*s) {
 955                 if (*s > 32)
 956                         return 0;
 957                 s++;
 958         }
 959         return 1;
 960 }
 961
 962 static void consolehandler(char *s)
 963 {
 964         printf(term_end());
 965         fflush(stdout);
 966         /* Called when readline data is available */
 967         if (s && !ast_all_zeros(s))
 968                 ast_el_add_history(s);
 969         /* Give the console access to the shell */
 970         if (s) {
 971                 /* The real handler for bang */
 972                 if (s[0] == '!') {
 973                         if (s[1])
 974                                 ast_safe_system(s+1);
 975                         else
 976                                 ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
 977                 } else
 978                 ast_cli_command(STDOUT_FILENO, s);
 979         } else
 980                 fprintf(stdout, "\nUse \"quit\" to exit\n");
 981 }
 982
 983 static int remoteconsolehandler(char *s)
 984 {
 985         int ret = 0;
 986         /* Called when readline data is available */
 987         if (s && !ast_all_zeros(s))
 988                 ast_el_add_history(s);
 989         /* Give the console access to the shell */
 990         if (s) {
 991                 /* The real handler for bang */
 992                 if (s[0] == '!') {
 993                         if (s[1])
 994                                 ast_safe_system(s+1);
 995                         else
 996                                 ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
 997                         ret = 1;
 998                 }
 999                 if ((strncasecmp(s, "quit", 4) == 0 || strncasecmp(s, "exit", 4) == 0) &&
1000                     (s[4] == '\0' || isspace(s[4]))) {
1001                         quit_handler(0, 0, 0, 0);
1002                         ret = 1;
1003                 }
1004         } else
1005                 fprintf(stdout, "\nUse \"quit\" to exit\n");
1006
1007         return ret;
1008 }
1009
1010 static char abort_halt_help[] =
1011 "Usage: abort shutdown\n"
1012 "       Causes Asterisk to abort an executing shutdown or restart, and resume normal\n"
1013 "       call operations.\n";
1014
1015 static char shutdown_now_help[] =
1016 "Usage: stop now\n"
1017 "       Shuts down a running Asterisk immediately, hanging up all active calls .\n";
1018
1019 static char shutdown_gracefully_help[] =
1020 "Usage: stop gracefully\n"
1021 "       Causes Asterisk to not accept new calls, and exit when all\n"
1022 "       active calls have terminated normally.\n";
1023
1024 static char shutdown_when_convenient_help[] =
1025 "Usage: stop when convenient\n"
1026 "       Causes Asterisk to perform a shutdown when all active calls have ended.\n";
1027
1028 static char restart_now_help[] =
1029 "Usage: restart now\n"
1030 "       Causes Asterisk to hangup all calls and exec() itself performing a cold\n"
1031 "       restart.\n";
1032
1033 static char restart_gracefully_help[] =
1034 "Usage: restart gracefully\n"
1035 "       Causes Asterisk to stop accepting new calls and exec() itself performing a cold\n"
1036 "       restart when all active calls have ended.\n";
1037
1038 static char restart_when_convenient_help[] =
1039 "Usage: restart when convenient\n"
1040 "       Causes Asterisk to perform a cold restart when all active calls have ended.\n";
1041
1042 static char bang_help[] =
1043 "Usage: !<command>\n"
1044 "       Executes a given shell command\n";
1045
1046 #if 0
1047 static int handle_quit(int fd, int argc, char *argv[])
1048 {
1049         if (argc != 1)
1050                 return RESULT_SHOWUSAGE;
1051         quit_handler(0, 0, 1, 0);
1052         return RESULT_SUCCESS;
1053 }
1054 #endif
1055
1056 static int handle_shutdown_now(int fd, int argc, char *argv[])
1057 {
1058         if (argc != 2)
1059                 return RESULT_SHOWUSAGE;
1060         quit_handler(0, 0 /* Not nice */, 1 /* safely */, 0 /* not restart */);
1061         return RESULT_SUCCESS;
1062 }
1063
1064 static int handle_shutdown_gracefully(int fd, int argc, char *argv[])
1065 {
1066         if (argc != 2)
1067                 return RESULT_SHOWUSAGE;
1068         quit_handler(0, 1 /* nicely */, 1 /* safely */, 0 /* no restart */);
1069         return RESULT_SUCCESS;
1070 }
1071
1072 static int handle_shutdown_when_convenient(int fd, int argc, char *argv[])
1073 {
1074         if (argc != 3)
1075                 return RESULT_SHOWUSAGE;
1076         quit_handler(0, 2 /* really nicely */, 1 /* safely */, 0 /* don't restart */);
1077         return RESULT_SUCCESS;
1078 }
1079
1080 static int handle_restart_now(int fd, int argc, char *argv[])
1081 {
1082         if (argc != 2)
1083                 return RESULT_SHOWUSAGE;
1084         quit_handler(0, 0 /* not nicely */, 1 /* safely */, 1 /* restart */);
1085         return RESULT_SUCCESS;
1086 }
1087
1088 static int handle_restart_gracefully(int fd, int argc, char *argv[])
1089 {
1090         if (argc != 2)
1091                 return RESULT_SHOWUSAGE;
1092         quit_handler(0, 1 /* nicely */, 1 /* safely */, 1 /* restart */);
1093         return RESULT_SUCCESS;
1094 }
1095
1096 static int handle_restart_when_convenient(int fd, int argc, char *argv[])
1097 {
1098         if (argc != 3)
1099                 return RESULT_SHOWUSAGE;
1100         quit_handler(0, 2 /* really nicely */, 1 /* safely */, 1 /* restart */);
1101         return RESULT_SUCCESS;
1102 }
1103
1104 static int handle_abort_halt(int fd, int argc, char *argv[])
1105 {
1106         if (argc != 2)
1107                 return RESULT_SHOWUSAGE;
1108         ast_cancel_shutdown();
1109         shuttingdown = 0;
1110         return RESULT_SUCCESS;
1111 }
1112
1113 static int handle_bang(int fd, int argc, char *argv[])
1114 {
1115         return RESULT_SUCCESS;
1116 }
1117
1118 #define ASTERISK_PROMPT "*CLI> "
1119
1120 #define ASTERISK_PROMPT2 "%s*CLI> "
1121
1122 static struct ast_cli_entry core_cli[] = {
1123         { { "abort", "halt", NULL }, handle_abort_halt,
1124           "Cancel a running halt", abort_halt_help },
1125         { { "stop", "now", NULL }, handle_shutdown_now,
1126           "Shut down Asterisk immediately", shutdown_now_help },
1127         { { "stop", "gracefully", NULL }, handle_shutdown_gracefully,
1128           "Gracefully shut down Asterisk", shutdown_gracefully_help },
1129         { { "stop", "when","convenient", NULL }, handle_shutdown_when_convenient,
1130           "Shut down Asterisk at empty call volume", shutdown_when_convenient_help },
1131         { { "restart", "now", NULL }, handle_restart_now,
1132           "Restart Asterisk immediately", restart_now_help },
1133         { { "restart", "gracefully", NULL }, handle_restart_gracefully,
1134           "Restart Asterisk gracefully", restart_gracefully_help },
1135         { { "restart", "when", "convenient", NULL }, handle_restart_when_convenient,
1136           "Restart Asterisk at empty call volume", restart_when_convenient_help },
1137         { { "!", NULL }, handle_bang,
1138           "Execute a shell command", bang_help },
1139 #if !defined(LOW_MEMORY)
1140         { { "show", "version", "files", NULL }, handle_show_version_files,
1141           "Show versions of files used to build Asterisk", show_version_files_help, complete_show_version_files },
1142 #endif /* ! LOW_MEMORY */
1143 };
1144
1145 static int ast_el_read_char(EditLine *el, char *cp)
1146 {
1147         int num_read=0;
1148         int lastpos=0;
1149         struct pollfd fds[2];
1150         int res;
1151         int max;
1152         char buf[512];
1153
1154         for (;;) {
1155                 max = 1;
1156                 fds[0].fd = ast_consock;
1157                 fds[0].events = POLLIN;
1158                 if (!option_exec) {
1159                         fds[1].fd = STDIN_FILENO;
1160                         fds[1].events = POLLIN;
1161                         max++;
1162                 }
1163                 res = poll(fds, max, -1);
1164                 if (res < 0) {
1165                         if (errno == EINTR)
1166                                 continue;
1167                         ast_log(LOG_ERROR, "poll failed: %s\n", strerror(errno));
1168                         break;
1169                 }
1170
1171                 if (!option_exec && fds[1].revents) {
1172                         num_read = read(STDIN_FILENO, cp, 1);
1173                         if (num_read < 1) {
1174                                 break;
1175                         } else
1176                                 return (num_read);
1177                 }
1178                 if (fds[0].revents) {
1179                         res = read(ast_consock, buf, sizeof(buf) - 1);
1180                         /* if the remote side disappears exit */
1181                         if (res < 1) {
1182                                 fprintf(stderr, "\nDisconnected from Asterisk server\n");
1183                                 if (!option_reconnect) {
1184                                         quit_handler(0, 0, 0, 0);
1185                                 } else {
1186                                         int tries;
1187                                         int reconnects_per_second = 20;
1188                                         fprintf(stderr, "Attempting to reconnect for 30 seconds\n");
1189                                         for (tries=0;tries<30 * reconnects_per_second;tries++) {
1190                                                 if (ast_tryconnect()) {
1191                                                         fprintf(stderr, "Reconnect succeeded after %.3f seconds\n", 1.0 / reconnects_per_second * tries);
1192                                                         printf(term_quit());
1193                                                         WELCOME_MESSAGE;
1194                                                         break;
1195                                                 } else {
1196                                                         usleep(1000000 / reconnects_per_second);
1197                                                 }
1198                                         }
1199                                         if (tries >= 30 * reconnects_per_second) {
1200                                                 fprintf(stderr, "Failed to reconnect for 30 seconds.  Quitting.\n");
1201                                                 quit_handler(0, 0, 0, 0);
1202                                         }
1203                                 }
1204                         }
1205
1206                         buf[res] = '\0';
1207
1208                         if (!option_exec && !lastpos)
1209                                 write(STDOUT_FILENO, "\r", 1);
1210                         write(STDOUT_FILENO, buf, res);
1211                         if ((buf[res-1] == '\n') || (buf[res-2] == '\n')) {
1212                                 *cp = CC_REFRESH;
1213                                 return(1);
1214                         } else {
1215                                 lastpos = 1;
1216                         }
1217                 }
1218         }
1219
1220         *cp = '\0';
1221         return (0);
1222 }
1223
1224 static char *cli_prompt(EditLine *el)
1225 {
1226         static char prompt[200];
1227         char *pfmt;
1228         int color_used=0;
1229         char term_code[20];
1230
1231         if ((pfmt = getenv("ASTERISK_PROMPT"))) {
1232                 char *t = pfmt, *p = prompt;
1233                 memset(prompt, 0, sizeof(prompt));
1234                 while (*t != '\0' && *p < sizeof(prompt)) {
1235                         if (*t == '%') {
1236                                 char hostname[MAXHOSTNAMELEN]="";
1237                                 int i;
1238                                 struct timeval tv;
1239                                 struct tm tm;
1240 #ifdef linux
1241                                 FILE *LOADAVG;
1242 #endif
1243                                 int fgcolor = COLOR_WHITE, bgcolor = COLOR_BLACK;
1244
1245                                 t++;
1246                                 switch (*t) {
1247                                         case 'C': /* color */
1248                                                 t++;
1249                                                 if (sscanf(t, "%d;%d%n", &fgcolor, &bgcolor, &i) == 2) {
1250                                                         strncat(p, term_color_code(term_code, fgcolor, bgcolor, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
1251                                                         t += i - 1;
1252                                                 } else if (sscanf(t, "%d%n", &fgcolor, &i) == 1) {
1253                                                         strncat(p, term_color_code(term_code, fgcolor, 0, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
1254                                                         t += i - 1;
1255                                                 }
1256
1257                                                 /* If the color has been reset correctly, then there's no need to reset it later */
1258                                                 if ((fgcolor == COLOR_WHITE) && (bgcolor == COLOR_BLACK)) {
1259                                                         color_used = 0;
1260                                                 } else {
1261                                                         color_used = 1;
1262                                                 }
1263                                                 break;
1264                                         case 'd': /* date */
1265                                                 memset(&tm, 0, sizeof(struct tm));
1266                                                 tv = ast_tvnow();
1267                                                 if (localtime_r(&(tv.tv_sec), &tm)) {
1268                                                         strftime(p, sizeof(prompt) - strlen(prompt), "%Y-%m-%d", &tm);
1269                                                 }
1270                                                 break;
1271                                         case 'h': /* hostname */
1272                                                 if (!gethostname(hostname, sizeof(hostname) - 1)) {
1273                                                         strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
1274                                                 } else {
1275                                                         strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
1276                                                 }
1277                                                 break;
1278                                         case 'H': /* short hostname */
1279                                                 if (!gethostname(hostname, sizeof(hostname) - 1)) {
1280                                                         for (i=0;i<sizeof(hostname);i++) {
1281                                                                 if (hostname[i] == '.') {
1282                                                                         hostname[i] = '\0';
1283                                                                         break;
1284                                                                 }
1285                                                         }
1286                                                         strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
1287                                                 } else {
1288                                                         strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
1289                                                 }
1290                                                 break;
1291 #ifdef linux
1292                                         case 'l': /* load avg */
1293                                                 t++;
1294                                                 if ((LOADAVG = fopen("/proc/loadavg", "r"))) {
1295                                                         float avg1, avg2, avg3;
1296                                                         int actproc, totproc, npid, which;
1297                                                         fscanf(LOADAVG, "%f %f %f %d/%d %d",
1298                                                                 &avg1, &avg2, &avg3, &actproc, &totproc, &npid);
1299                                                         if (sscanf(t, "%d", &which) == 1) {
1300                                                                 switch (which) {
1301                                                                         case 1:
1302                                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg1);
1303                                                                                 break;
1304                                                                         case 2:
1305                                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg2);
1306                                                                                 break;
1307                                                                         case 3:
1308                                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg3);
1309                                                                                 break;
1310                                                                         case 4:
1311                                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%d/%d", actproc, totproc);
1312                                                                                 break;
1313                                                                         case 5:
1314                                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%d", npid);
1315                                                                                 break;
1316                                                                 }
1317                                                         }
1318                                                 }
1319                                                 break;
1320 #endif
1321                                         case 't': /* time */
1322                                                 memset(&tm, 0, sizeof(struct tm));
1323                                                 tv = ast_tvnow();
1324                                                 if (localtime_r(&(tv.tv_sec), &tm)) {
1325                                                         strftime(p, sizeof(prompt) - strlen(prompt), "%H:%M:%S", &tm);
1326                                                 }
1327                                                 break;
1328                                         case '#': /* process console or remote? */
1329                                                 if (! option_remote) {
1330                                                         strncat(p, "#", sizeof(prompt) - strlen(prompt) - 1);
1331                                                 } else {
1332                                                         strncat(p, ">", sizeof(prompt) - strlen(prompt) - 1);
1333                                                 }
1334                                                 break;
1335                                         case '%': /* literal % */
1336                                                 strncat(p, "%", sizeof(prompt) - strlen(prompt) - 1);
1337                                                 break;
1338                                         case '\0': /* % is last character - prevent bug */
1339                                                 t--;
1340                                                 break;
1341                                 }
1342                                 while (*p != '\0') {
1343                                         p++;
1344                                 }
1345                                 t++;
1346                         } else {
1347                                 *p = *t;
1348                                 p++;
1349                                 t++;
1350                         }
1351                 }
1352                 if (color_used) {
1353                         /* Force colors back to normal at end */
1354                         term_color_code(term_code, COLOR_WHITE, COLOR_BLACK, sizeof(term_code));
1355                         if (strlen(term_code) > sizeof(prompt) - strlen(prompt)) {
1356                                 strncat(prompt + sizeof(prompt) - strlen(term_code) - 1, term_code, strlen(term_code));
1357                         } else {
1358                                 strncat(p, term_code, sizeof(term_code));
1359                         }
1360                 }
1361         } else if (remotehostname)
1362                 snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT2, remotehostname);
1363         else
1364                 snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT);
1365
1366         return(prompt);
1367 }
1368
1369 static char **ast_el_strtoarr(char *buf)
1370 {
1371         char **match_list = NULL, *retstr;
1372         size_t match_list_len;
1373         int matches = 0;
1374
1375         match_list_len = 1;
1376         while ( (retstr = strsep(&buf, " ")) != NULL) {
1377
1378                 if (!strcmp(retstr, AST_CLI_COMPLETE_EOF))
1379                         break;
1380                 if (matches + 1 >= match_list_len) {
1381                         match_list_len <<= 1;
1382                         match_list = realloc(match_list, match_list_len * sizeof(char *));
1383                 }
1384
1385                 match_list[matches++] = strdup(retstr);
1386         }
1387
1388         if (!match_list)
1389                 return (char **) NULL;
1390
1391         if (matches>= match_list_len)
1392                 match_list = realloc(match_list, (match_list_len + 1) * sizeof(char *));
1393
1394         match_list[matches] = (char *) NULL;
1395
1396         return match_list;
1397 }
1398
1399 static int ast_el_sort_compare(const void *i1, const void *i2)
1400 {
1401         char *s1, *s2;
1402
1403         s1 = ((char **)i1)[0];
1404         s2 = ((char **)i2)[0];
1405
1406         return strcasecmp(s1, s2);
1407 }
1408
1409 static int ast_cli_display_match_list(char **matches, int len, int max)
1410 {
1411         int i, idx, limit, count;
1412         int screenwidth = 0;
1413         int numoutput = 0, numoutputline = 0;
1414
1415         screenwidth = ast_get_termcols(STDOUT_FILENO);
1416
1417         /* find out how many entries can be put on one line, with two spaces between strings */
1418         limit = screenwidth / (max + 2);
1419         if (limit == 0)
1420                 limit = 1;
1421
1422         /* how many lines of output */
1423         count = len / limit;
1424         if (count * limit < len)
1425                 count++;
1426
1427         idx = 1;
1428
1429         qsort(&matches[0], (size_t)(len + 1), sizeof(char *), ast_el_sort_compare);
1430
1431         for (; count > 0; count--) {
1432                 numoutputline = 0;
1433                 for (i=0; i < limit && matches[idx]; i++, idx++) {
1434
1435                         /* Don't print dupes */
1436                         if ( (matches[idx+1] != NULL && strcmp(matches[idx], matches[idx+1]) == 0 ) ) {
1437                                 i--;
1438                                 free(matches[idx]);
1439                                 matches[idx] = NULL;
1440                                 continue;
1441                         }
1442
1443                         numoutput++;
1444                         numoutputline++;
1445                         fprintf(stdout, "%-*s  ", max, matches[idx]);
1446                         free(matches[idx]);
1447                         matches[idx] = NULL;
1448                 }
1449                 if (numoutputline > 0)
1450                         fprintf(stdout, "\n");
1451         }
1452
1453         return numoutput;
1454 }
1455
1456
1457 static char *cli_complete(EditLine *el, int ch)
1458 {
1459         int len=0;
1460         char *ptr;
1461         int nummatches = 0;
1462         char **matches;
1463         int retval = CC_ERROR;
1464         char buf[2048];
1465         int res;
1466
1467         LineInfo *lf = (LineInfo *)el_line(el);
1468
1469         *(char *)lf->cursor = '\0';
1470         ptr = (char *)lf->cursor;
1471         if (ptr) {
1472                 while (ptr > lf->buffer) {
1473                         if (isspace(*ptr)) {
1474                                 ptr++;
1475                                 break;
1476                         }
1477                         ptr--;
1478                 }
1479         }
1480
1481         len = lf->cursor - ptr;
1482
1483         if (option_remote) {
1484                 snprintf(buf, sizeof(buf),"_COMMAND NUMMATCHES \"%s\" \"%s\"", lf->buffer, ptr);
1485                 fdprint(ast_consock, buf);
1486                 res = read(ast_consock, buf, sizeof(buf));
1487                 buf[res] = '\0';
1488                 nummatches = atoi(buf);
1489
1490                 if (nummatches > 0) {
1491                         char *mbuf;
1492                         int mlen = 0, maxmbuf = 2048;
1493                         /* Start with a 2048 byte buffer */
1494                         mbuf = malloc(maxmbuf);
1495                         if (!mbuf)
1496                                 return (char *)(CC_ERROR);
1497                         snprintf(buf, sizeof(buf),"_COMMAND MATCHESARRAY \"%s\" \"%s\"", lf->buffer, ptr);
1498                         fdprint(ast_consock, buf);
1499                         res = 0;
1500                         mbuf[0] = '\0';
1501                         while (!strstr(mbuf, AST_CLI_COMPLETE_EOF) && res != -1) {
1502                                 if (mlen + 1024 > maxmbuf) {
1503                                         /* Every step increment buffer 1024 bytes */
1504                                         maxmbuf += 1024;
1505                                         mbuf = realloc(mbuf, maxmbuf);
1506                                         if (!mbuf)
1507                                                 return (char *)(CC_ERROR);
1508                                 }
1509                                 /* Only read 1024 bytes at a time */
1510                                 res = read(ast_consock, mbuf + mlen, 1024);
1511                                 if (res > 0)
1512                                         mlen += res;
1513                         }
1514                         mbuf[mlen] = '\0';
1515
1516                         matches = ast_el_strtoarr(mbuf);
1517                         free(mbuf);
1518                 } else
1519                         matches = (char **) NULL;
1520
1521
1522         } else {
1523
1524                 nummatches = ast_cli_generatornummatches((char *)lf->buffer,ptr);
1525                 matches = ast_cli_completion_matches((char *)lf->buffer,ptr);
1526         }
1527
1528         if (matches) {
1529                 int i;
1530                 int matches_num, maxlen, match_len;
1531
1532                 if (matches[0][0] != '\0') {
1533                         el_deletestr(el, (int) len);
1534                         el_insertstr(el, matches[0]);
1535                         retval = CC_REFRESH;
1536                 }
1537
1538                 if (nummatches == 1) {
1539                         /* Found an exact match */
1540                         el_insertstr(el, " ");
1541                         retval = CC_REFRESH;
1542                 } else {
1543                         /* Must be more than one match */
1544                         for (i=1, maxlen=0; matches[i]; i++) {
1545                                 match_len = strlen(matches[i]);
1546                                 if (match_len > maxlen)
1547                                         maxlen = match_len;
1548                         }
1549                         matches_num = i - 1;
1550                         if (matches_num >1) {
1551                                 fprintf(stdout, "\n");
1552                                 ast_cli_display_match_list(matches, nummatches, maxlen);
1553                                 retval = CC_REDISPLAY;
1554                         } else {
1555                                 el_insertstr(el," ");
1556                                 retval = CC_REFRESH;
1557                         }
1558                 }
1559         free(matches);
1560         }
1561
1562         return (char *)(long)retval;
1563 }
1564
1565 static int ast_el_initialize(void)
1566 {
1567         HistEvent ev;
1568         char *editor = getenv("AST_EDITOR");
1569
1570         if (el != NULL)
1571                 el_end(el);
1572         if (el_hist != NULL)
1573                 history_end(el_hist);
1574
1575         el = el_init("asterisk", stdin, stdout, stderr);
1576         el_set(el, EL_PROMPT, cli_prompt);
1577
1578         el_set(el, EL_EDITMODE, 1);
1579         el_set(el, EL_EDITOR, editor ? editor : "emacs");
1580         el_hist = history_init();
1581         if (!el || !el_hist)
1582                 return -1;
1583
1584         /* setup history with 100 entries */
1585         history(el_hist, &ev, H_SETSIZE, 100);
1586
1587         el_set(el, EL_HIST, history, el_hist);
1588
1589         el_set(el, EL_ADDFN, "ed-complete", "Complete argument", cli_complete);
1590         /* Bind <tab> to command completion */
1591         el_set(el, EL_BIND, "^I", "ed-complete", NULL);
1592         /* Bind ? to command completion */
1593         el_set(el, EL_BIND, "?", "ed-complete", NULL);
1594         /* Bind ^D to redisplay */
1595         el_set(el, EL_BIND, "^D", "ed-redisplay", NULL);
1596
1597         return 0;
1598 }
1599
1600 static int ast_el_add_history(char *buf)
1601 {
1602         HistEvent ev;
1603
1604         if (el_hist == NULL || el == NULL)
1605                 ast_el_initialize();
1606         if (strlen(buf) > 256)
1607                 return 0;
1608         return (history(el_hist, &ev, H_ENTER, buf));
1609 }
1610
1611 static int ast_el_write_history(char *filename)
1612 {
1613         HistEvent ev;
1614
1615         if (el_hist == NULL || el == NULL)
1616                 ast_el_initialize();
1617
1618         return (history(el_hist, &ev, H_SAVE, filename));
1619 }
1620
1621 static int ast_el_read_history(char *filename)
1622 {
1623         char buf[256];
1624         FILE *f;
1625         int ret = -1;
1626
1627         if (el_hist == NULL || el == NULL)
1628                 ast_el_initialize();
1629
1630         if ((f = fopen(filename, "r")) == NULL)
1631                 return ret;
1632
1633         while (!feof(f)) {
1634                 fgets(buf, sizeof(buf), f);
1635                 if (!strcmp(buf, "_HiStOrY_V2_\n"))
1636                         continue;
1637                 if (ast_all_zeros(buf))
1638                         continue;
1639                 if ((ret = ast_el_add_history(buf)) == -1)
1640                         break;
1641         }
1642         fclose(f);
1643
1644         return ret;
1645 }
1646
1647 static void ast_remotecontrol(char * data)
1648 {
1649         char buf[80];
1650         int res;
1651         char filename[80] = "";
1652         char *hostname;
1653         char *cpid;
1654         char *version;
1655         int pid;
1656         char tmp[80];
1657         char *stringp=NULL;
1658
1659         char *ebuf;
1660         int num = 0;
1661
1662         read(ast_consock, buf, sizeof(buf));
1663         if (data)
1664                 write(ast_consock, data, strlen(data) + 1);
1665         stringp=buf;
1666         hostname = strsep(&stringp, "/");
1667         cpid = strsep(&stringp, "/");
1668         version = strsep(&stringp, "\n");
1669         if (!version)
1670                 version = "<Version Unknown>";
1671         stringp=hostname;
1672         strsep(&stringp, ".");
1673         if (cpid)
1674                 pid = atoi(cpid);
1675         else
1676                 pid = -1;
1677         snprintf(tmp, sizeof(tmp), "set verbose atleast %d", option_verbose);
1678         fdprint(ast_consock, tmp);
1679         snprintf(tmp, sizeof(tmp), "set debug atleast %d", option_debug);
1680         fdprint(ast_consock, tmp);
1681         ast_verbose("Connected to Asterisk %s currently running on %s (pid = %d)\n", version, hostname, pid);
1682         remotehostname = hostname;
1683         if (getenv("HOME"))
1684                 snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
1685         if (el_hist == NULL || el == NULL)
1686                 ast_el_initialize();
1687
1688         el_set(el, EL_GETCFN, ast_el_read_char);
1689
1690         if (!ast_strlen_zero(filename))
1691                 ast_el_read_history(filename);
1692
1693         if (option_exec && data) {  /* hack to print output then exit if asterisk -rx is used */
1694                 char tempchar;
1695                 struct pollfd fds[0];
1696                 fds[0].fd = ast_consock;
1697                 fds[0].events = POLLIN;
1698                 fds[0].revents = 0;
1699                 while(poll(fds, 1, 100) > 0) {
1700                         ast_el_read_char(el, &tempchar);
1701                 }
1702                 return;
1703         }
1704         for(;;) {
1705                 ebuf = (char *)el_gets(el, &num);
1706
1707                 if (!ast_strlen_zero(ebuf)) {
1708                         if (ebuf[strlen(ebuf)-1] == '\n')
1709                                 ebuf[strlen(ebuf)-1] = '\0';
1710                         if (!remoteconsolehandler(ebuf)) {
1711                                 res = write(ast_consock, ebuf, strlen(ebuf) + 1);
1712                                 if (res < 1) {
1713                                         ast_log(LOG_WARNING, "Unable to write: %s\n", strerror(errno));
1714                                         break;
1715                                 }
1716                         }
1717                 }
1718         }
1719         printf("\nDisconnected from Asterisk server\n");
1720 }
1721
1722 static int show_version(void)
1723 {
1724         printf("Asterisk " ASTERISK_VERSION "\n");
1725         return 0;
1726 }
1727
1728 static int show_cli_help(void) {
1729         printf("Asterisk " ASTERISK_VERSION ", Copyright (C) 2000 - 2005, Digium.\n");
1730         printf("Usage: asterisk [OPTIONS]\n");
1731         printf("Valid Options:\n");
1732         printf("   -V              Display version number and exit\n");
1733         printf("   -C <configfile> Use an alternate configuration file\n");
1734         printf("   -G <group>      Run as a group other than the caller\n");
1735         printf("   -U <user>       Run as a user other than the caller\n");
1736         printf("   -c              Provide console CLI\n");
1737         printf("   -d              Enable extra debugging\n");
1738         printf("   -f              Do not fork\n");
1739         printf("   -g              Dump core in case of a crash\n");
1740         printf("   -h              This help screen\n");
1741         printf("   -i              Initialize crypto keys at startup\n");
1742         printf("   -n              Disable console colorization\n");
1743         printf("   -p              Run as pseudo-realtime thread\n");
1744         printf("   -q              Quiet mode (suppress output)\n");
1745         printf("   -r              Connect to Asterisk on this machine\n");
1746         printf("   -R              Connect to Asterisk, and attempt to reconnect if disconnected\n");
1747         printf("   -t              Record soundfiles in /var/tmp and move them where they belong after they are done.\n");
1748         printf("   -T              Display the time in [Mmm dd hh:mm:ss] format for each line of output to the CLI.\n");
1749         printf("   -v              Increase verbosity (multiple v's = more verbose)\n");
1750         printf("   -x <cmd>        Execute command <cmd> (only valid with -r)\n");
1751         printf("\n");
1752         return 0;
1753 }
1754
1755 static void ast_readconfig(void) {
1756         struct ast_config *cfg;
1757         struct ast_variable *v;
1758         char *config = AST_CONFIG_FILE;
1759
1760         if (option_overrideconfig == 1) {
1761                 cfg = ast_config_load(ast_config_AST_CONFIG_FILE);
1762                 if (!cfg)
1763                         ast_log(LOG_WARNING, "Unable to open specified master config file '%s', using built-in defaults\n", ast_config_AST_CONFIG_FILE);
1764         } else {
1765                 cfg = ast_config_load(config);
1766         }
1767
1768         /* init with buildtime config */
1769         ast_copy_string(ast_config_AST_CONFIG_DIR, AST_CONFIG_DIR, sizeof(ast_config_AST_CONFIG_DIR));
1770         ast_copy_string(ast_config_AST_SPOOL_DIR, AST_SPOOL_DIR, sizeof(ast_config_AST_SPOOL_DIR));
1771         ast_copy_string(ast_config_AST_MODULE_DIR, AST_MODULE_DIR, sizeof(ast_config_AST_VAR_DIR));
1772         snprintf(ast_config_AST_MONITOR_DIR, sizeof(ast_config_AST_MONITOR_DIR) - 1, "%s/monitor", ast_config_AST_SPOOL_DIR);
1773         ast_copy_string(ast_config_AST_VAR_DIR, AST_VAR_DIR, sizeof(ast_config_AST_VAR_DIR));
1774         ast_copy_string(ast_config_AST_LOG_DIR, AST_LOG_DIR, sizeof(ast_config_AST_LOG_DIR));
1775         ast_copy_string(ast_config_AST_AGI_DIR, AST_AGI_DIR, sizeof(ast_config_AST_AGI_DIR));
1776         ast_copy_string(ast_config_AST_DB, AST_DB, sizeof(ast_config_AST_DB));
1777         ast_copy_string(ast_config_AST_KEY_DIR, AST_KEY_DIR, sizeof(ast_config_AST_KEY_DIR));
1778         ast_copy_string(ast_config_AST_PID, AST_PID, sizeof(ast_config_AST_PID));
1779         ast_copy_string(ast_config_AST_SOCKET, AST_SOCKET, sizeof(ast_config_AST_SOCKET));
1780         ast_copy_string(ast_config_AST_RUN_DIR, AST_RUN_DIR, sizeof(ast_config_AST_RUN_DIR));
1781
1782         /* no asterisk.conf? no problem, use buildtime config! */
1783         if (!cfg) {
1784                 return;
1785         }
1786         v = ast_variable_browse(cfg, "files");
1787         while (v) {
1788                 if (!strcasecmp(v->name, "astctlpermissions")) {
1789                         ast_copy_string(ast_config_AST_CTL_PERMISSIONS, v->value, sizeof(ast_config_AST_CTL_PERMISSIONS));
1790                 } else if (!strcasecmp(v->name, "astctlowner")) {
1791                         ast_copy_string(ast_config_AST_CTL_OWNER, v->value, sizeof(ast_config_AST_CTL_OWNER));
1792                 } else if (!strcasecmp(v->name, "astctlgroup")) {
1793                         ast_copy_string(ast_config_AST_CTL_GROUP, v->value, sizeof(ast_config_AST_CTL_GROUP));
1794                 } else if (!strcasecmp(v->name, "astctl")) {
1795                         ast_copy_string(ast_config_AST_CTL, v->value, sizeof(ast_config_AST_CTL));
1796                 }
1797                 v = v->next;
1798         }
1799         v = ast_variable_browse(cfg, "directories");
1800         while(v) {
1801                 if (!strcasecmp(v->name, "astetcdir")) {
1802                         ast_copy_string(ast_config_AST_CONFIG_DIR, v->value, sizeof(ast_config_AST_CONFIG_DIR));
1803                 } else if (!strcasecmp(v->name, "astspooldir")) {
1804                         ast_copy_string(ast_config_AST_SPOOL_DIR, v->value, sizeof(ast_config_AST_SPOOL_DIR));
1805                         snprintf(ast_config_AST_MONITOR_DIR, sizeof(ast_config_AST_MONITOR_DIR) - 1, "%s/monitor", v->value);
1806                 } else if (!strcasecmp(v->name, "astvarlibdir")) {
1807                         ast_copy_string(ast_config_AST_VAR_DIR, v->value, sizeof(ast_config_AST_VAR_DIR));
1808                         snprintf(ast_config_AST_DB, sizeof(ast_config_AST_DB), "%s/%s", v->value, "astdb");
1809                 } else if (!strcasecmp(v->name, "astlogdir")) {
1810                         ast_copy_string(ast_config_AST_LOG_DIR, v->value, sizeof(ast_config_AST_LOG_DIR));
1811                 } else if (!strcasecmp(v->name, "astagidir")) {
1812                         ast_copy_string(ast_config_AST_AGI_DIR, v->value, sizeof(ast_config_AST_AGI_DIR));
1813                 } else if (!strcasecmp(v->name, "astrundir")) {
1814                         snprintf(ast_config_AST_PID, sizeof(ast_config_AST_PID), "%s/%s", v->value, "asterisk.pid");
1815                         snprintf(ast_config_AST_SOCKET, sizeof(ast_config_AST_SOCKET), "%s/%s", v->value, ast_config_AST_CTL);
1816                         ast_copy_string(ast_config_AST_RUN_DIR, v->value, sizeof(ast_config_AST_RUN_DIR));
1817                 } else if (!strcasecmp(v->name, "astmoddir")) {
1818                         ast_copy_string(ast_config_AST_MODULE_DIR, v->value, sizeof(ast_config_AST_MODULE_DIR));
1819                 }
1820                 v = v->next;
1821         }
1822         v = ast_variable_browse(cfg, "options");
1823         while(v) {
1824                 /* verbose level (-v at startup) */
1825                 if (!strcasecmp(v->name, "verbose")) {
1826                         option_verbose = atoi(v->value);
1827                 /* whether or not to force timestamping. (-T at startup) */
1828                 } else if (!strcasecmp(v->name, "timestamp")) {
1829                         option_timestamp = ast_true(v->value);
1830                 /* whether or not to support #exec in config files */
1831                 } else if (!strcasecmp(v->name, "execincludes")) {
1832                         option_exec_includes = ast_true(v->value);
1833                 /* debug level (-d at startup) */
1834                 } else if (!strcasecmp(v->name, "debug")) {
1835                         option_debug = 0;
1836                         if (sscanf(v->value, "%d", &option_debug) != 1) {
1837                                 option_debug = ast_true(v->value);
1838                         }
1839                 /* Disable forking (-f at startup) */
1840                 } else if (!strcasecmp(v->name, "nofork")) {
1841                         option_nofork = ast_true(v->value);
1842                 /* Run quietly (-q at startup ) */
1843                 } else if (!strcasecmp(v->name, "quiet")) {
1844                         option_quiet = ast_true(v->value);
1845                 /* Run as console (-c at startup, implies nofork) */
1846                 } else if (!strcasecmp(v->name, "console")) {
1847                         option_console = ast_true(v->value);
1848                 /* Run with highg priority if the O/S permits (-p at startup) */
1849                 } else if (!strcasecmp(v->name, "highpriority")) {
1850                         option_highpriority = ast_true(v->value);
1851                 /* Initialize RSA auth keys (IAX2) (-i at startup) */
1852                 } else if (!strcasecmp(v->name, "initcrypto")) {
1853                         option_initcrypto = ast_true(v->value);
1854                 /* Disable ANSI colors for console (-c at startup) */
1855                 } else if (!strcasecmp(v->name, "nocolor")) {
1856                         option_nocolor = ast_true(v->value);
1857                 /* Disable some usage warnings for picky people :p */
1858                 } else if (!strcasecmp(v->name, "dontwarn")) {
1859                         option_dontwarn = ast_true(v->value);
1860                 /* Dump core in case of crash (-g) */
1861                 } else if (!strcasecmp(v->name, "dumpcore")) {
1862                         option_dumpcore = ast_true(v->value);
1863                 /* Cache recorded sound files to another directory during recording */
1864                 } else if (!strcasecmp(v->name, "cache_record_files")) {
1865                         option_cache_record_files = ast_true(v->value);
1866                 /* Specify cache directory */
1867                 }  else if (!strcasecmp(v->name, "record_cache_dir")) {
1868                         ast_copy_string(record_cache_dir, v->value, AST_CACHE_DIR_LEN);
1869                 /* Build transcode paths via SLINEAR, instead of directly */
1870                 } else if (!strcasecmp(v->name, "transcode_via_sln")) {
1871                         option_transcode_slin = ast_true(v->value);
1872                 /* Transmit SLINEAR silence while a channel is being recorded */
1873                 } else if (!strcasecmp(v->name, "transmit_silence_during_record")) {
1874                         option_transmit_silence_during_record = ast_true(v->value);
1875                 } else if (!strcasecmp(v->name, "maxcalls")) {
1876                         if ((sscanf(v->value, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0)) {
1877                                 option_maxcalls = 0;
1878                         }
1879                 } else if (!strcasecmp(v->name, "maxload")) {
1880                         double test[1];
1881
1882                         if (getloadavg(test, 1) == -1) {
1883                                 ast_log(LOG_ERROR, "Cannot obtain load average on this system. 'maxload' option disabled.\n");
1884                                 option_maxload = 0.0;
1885                         } else if ((sscanf(v->value, "%lf", &option_maxload) != 1) || (option_maxload < 0.0)) {
1886                                 option_maxload = 0.0;
1887                         }
1888                 }
1889                 v = v->next;
1890         }
1891         ast_config_destroy(cfg);
1892 }
1893
1894 int main(int argc, char *argv[])
1895 {
1896         int c;
1897         char filename[80] = "";
1898         char hostname[MAXHOSTNAMELEN]="";
1899         char tmp[80];
1900         char * xarg = NULL;
1901         int x;
1902         FILE *f;
1903         sigset_t sigs;
1904         int num;
1905         int is_child_of_nonroot=0;
1906         char *buf;
1907         char *runuser=NULL, *rungroup=NULL;
1908
1909         /* Remember original args for restart */
1910         if (argc > sizeof(_argv) / sizeof(_argv[0]) - 1) {
1911                 fprintf(stderr, "Truncating argument size to %d\n", (int)(sizeof(_argv) / sizeof(_argv[0])) - 1);
1912                 argc = sizeof(_argv) / sizeof(_argv[0]) - 1;
1913         }
1914         for (x=0;x<argc;x++)
1915                 _argv[x] = argv[x];
1916         _argv[x] = NULL;
1917
1918         /* if the progname is rasterisk consider it a remote console */
1919         if (argv[0] && (strstr(argv[0], "rasterisk")) != NULL) {
1920                 option_remote++;
1921                 option_nofork++;
1922         }
1923         if (gethostname(hostname, sizeof(hostname)-1))
1924                 ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
1925         ast_mainpid = getpid();
1926         ast_ulaw_init();
1927         ast_alaw_init();
1928         callerid_init();
1929         ast_utils_init();
1930         tdd_init();
1931         /* When Asterisk restarts after it has dropped the root privileges,
1932          * it can't issue setuid(), setgid(), setgroups() or set_priority()
1933          * */
1934         if (getenv("ASTERISK_ALREADY_NONROOT"))
1935                 is_child_of_nonroot=1;
1936         if (getenv("HOME"))
1937                 snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
1938         /* Check if we're root */
1939         /*
1940         if (geteuid()) {
1941                 ast_log(LOG_ERROR, "Must be run as root\n");
1942                 exit(1);
1943         }
1944         */
1945         /* Check for options */
1946         while((c=getopt(argc, argv, "tThfdvVqprRgcinx:U:G:C:L:M:")) != -1) {
1947                 switch(c) {
1948                 case 'd':
1949                         option_debug++;
1950                         option_nofork++;
1951                         break;
1952                 case 'c':
1953                         option_console++;
1954                         option_nofork++;
1955                         break;
1956                 case 'f':
1957                         option_nofork++;
1958                         break;
1959                 case 'n':
1960                         option_nocolor++;
1961                         break;
1962                 case 'r':
1963                         option_remote++;
1964                         option_nofork++;
1965                         break;
1966                 case 'R':
1967                         option_remote++;
1968                         option_nofork++;
1969                         option_reconnect++;
1970                         break;
1971                 case 'p':
1972                         option_highpriority++;
1973                         break;
1974                 case 'v':
1975                         option_verbose++;
1976                         option_nofork++;
1977                         break;
1978                 case 'M':
1979                         if ((sscanf(optarg, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0))
1980                                 option_maxcalls = 0;
1981                         break;
1982                 case 'L':
1983                         if ((sscanf(optarg, "%lf", &option_maxload) != 1) || (option_maxload < 0.0))
1984                                 option_maxload = 0.0;
1985                         break;
1986                 case 'q':
1987                         option_quiet++;
1988                         break;
1989                 case 't':
1990                         option_cache_record_files++;
1991                         break;
1992                 case 'T':
1993                         option_timestamp++;
1994                         break;
1995                 case 'x':
1996                         option_exec++;
1997                         xarg = optarg;
1998                         break;
1999                 case 'C':
2000                         ast_copy_string((char *)ast_config_AST_CONFIG_FILE,optarg,sizeof(ast_config_AST_CONFIG_FILE));
2001                         option_overrideconfig++;
2002                         break;
2003                 case 'i':
2004                         option_initcrypto++;
2005                         break;
2006                 case'g':
2007                         option_dumpcore++;
2008                         break;
2009                 case 'h':
2010                         show_cli_help();
2011                         exit(0);
2012                 case 'V':
2013                         show_version();
2014                         exit(0);
2015                 case 'U':
2016                         runuser = optarg;
2017                         break;
2018                 case 'G':
2019                         rungroup = optarg;
2020                         break;
2021                 case '?':
2022                         exit(1);
2023                 }
2024         }
2025
2026         /* For remote connections, change the name of the remote connection.
2027          * We do this for the benefit of init scripts (which need to know if/when
2028          * the main asterisk process has died yet). */
2029         if (option_remote) {
2030                 strcpy(argv[0], "rasterisk");
2031                 for (x = 1; x < argc; x++) {
2032                         argv[x] = argv[0] + 10;
2033                 }
2034         }
2035
2036         if (option_dumpcore) {
2037                 struct rlimit l;
2038                 memset(&l, 0, sizeof(l));
2039                 l.rlim_cur = RLIM_INFINITY;
2040                 l.rlim_max = RLIM_INFINITY;
2041                 if (setrlimit(RLIMIT_CORE, &l)) {
2042                         ast_log(LOG_WARNING, "Unable to disable core size resource limit: %s\n", strerror(errno));
2043                 }
2044         }
2045
2046         if (option_console && !option_verbose)
2047                 ast_verbose("[ Reading Master Configuration ]");
2048         ast_readconfig();
2049
2050 #ifndef __CYGWIN__
2051
2052         if (!is_child_of_nonroot && ast_set_priority(option_highpriority)) {
2053                 exit(1);
2054         }
2055
2056         if (!is_child_of_nonroot && rungroup) {
2057                 struct group *gr;
2058                 gr = getgrnam(rungroup);
2059                 if (!gr) {
2060                         ast_log(LOG_WARNING, "No such group '%s'!\n", rungroup);
2061                         exit(1);
2062                 }
2063                 if (setgid(gr->gr_gid)) {
2064                         ast_log(LOG_WARNING, "Unable to setgid to %d (%s)\n", gr->gr_gid, rungroup);
2065                         exit(1);
2066                 }
2067                 if (option_verbose)
2068                         ast_verbose("Running as group '%s'\n", rungroup);
2069         }
2070
2071         if (!is_child_of_nonroot && runuser) {
2072                 struct passwd *pw;
2073                 pw = getpwnam(runuser);
2074                 if (!pw) {
2075                         ast_log(LOG_WARNING, "No such user '%s'!\n", runuser);
2076                         exit(1);
2077                 }
2078                 if (setuid(pw->pw_uid)) {
2079                         ast_log(LOG_WARNING, "Unable to setuid to %d (%s)\n", pw->pw_uid, runuser);
2080                         exit(1);
2081                 }
2082                 setenv("ASTERISK_ALREADY_NONROOT","yes",1);
2083                 if (option_verbose)
2084                         ast_verbose("Running as user '%s'\n", runuser);
2085         }
2086
2087 #endif /* __CYGWIN__ */
2088
2089         term_init();
2090         printf(term_end());
2091         fflush(stdout);
2092
2093         if (option_console && !option_verbose)
2094                 ast_verbose("[ Initializing Custom Configuration Options ]");
2095         /* custom config setup */
2096         register_config_cli();
2097         read_config_maps();
2098
2099
2100         if (option_console) {
2101                 if (el_hist == NULL || el == NULL)
2102                         ast_el_initialize();
2103
2104                 if (!ast_strlen_zero(filename))
2105                         ast_el_read_history(filename);
2106         }
2107
2108         if (ast_tryconnect()) {
2109                 /* One is already running */
2110                 if (option_remote) {
2111                         if (option_exec) {
2112                                 ast_remotecontrol(xarg);
2113                                 quit_handler(0, 0, 0, 0);
2114                                 exit(0);
2115                         }
2116                         printf(term_quit());
2117                         ast_register_verbose(console_verboser);
2118                         WELCOME_MESSAGE;
2119                         ast_remotecontrol(NULL);
2120                         quit_handler(0, 0, 0, 0);
2121                         exit(0);
2122                 } else {
2123                         ast_log(LOG_ERROR, "Asterisk already running on %s.  Use 'asterisk -r' to connect.\n", (char *)ast_config_AST_SOCKET);
2124                         printf(term_quit());
2125                         exit(1);
2126                 }
2127         } else if (option_remote || option_exec) {
2128                 ast_log(LOG_ERROR, "Unable to connect to remote asterisk (does %s exist?)\n",ast_config_AST_SOCKET);
2129                 printf(term_quit());
2130                 exit(1);
2131         }
2132         /* Blindly write pid file since we couldn't connect */
2133         unlink((char *)ast_config_AST_PID);
2134         f = fopen((char *)ast_config_AST_PID, "w");
2135         if (f) {
2136                 fprintf(f, "%d\n", getpid());
2137                 fclose(f);
2138         } else
2139                 ast_log(LOG_WARNING, "Unable to open pid file '%s': %s\n", (char *)ast_config_AST_PID, strerror(errno));
2140
2141         if (!option_verbose && !option_debug && !option_nofork && !option_console) {
2142                 daemon(0,0);
2143                 /* Blindly re-write pid file since we are forking */
2144                 unlink((char *)ast_config_AST_PID);
2145                 f = fopen((char *)ast_config_AST_PID, "w");
2146                 if (f) {
2147                         fprintf(f, "%d\n", getpid());
2148                         fclose(f);
2149                 } else
2150                         ast_log(LOG_WARNING, "Unable to open pid file '%s': %s\n", (char *)ast_config_AST_PID, strerror(errno));
2151         }
2152
2153         /* Test recursive mutex locking. */
2154         if (test_for_thread_safety())
2155                 ast_verbose("Warning! Asterisk is not thread safe.\n");
2156
2157         ast_makesocket();
2158         sigemptyset(&sigs);
2159         sigaddset(&sigs, SIGHUP);
2160         sigaddset(&sigs, SIGTERM);
2161         sigaddset(&sigs, SIGINT);
2162         sigaddset(&sigs, SIGPIPE);
2163         sigaddset(&sigs, SIGWINCH);
2164         pthread_sigmask(SIG_BLOCK, &sigs, NULL);
2165         if (option_console || option_verbose || option_remote)
2166                 ast_register_verbose(console_verboser);
2167         /* Print a welcome message if desired */
2168         if (option_verbose || option_console) {
2169                 WELCOME_MESSAGE;
2170         }
2171         if (option_console && !option_verbose)
2172                 ast_verbose("[ Booting...");
2173
2174         signal(SIGURG, urg_handler);
2175         signal(SIGINT, __quit_handler);
2176         signal(SIGTERM, __quit_handler);
2177         signal(SIGHUP, hup_handler);
2178         signal(SIGCHLD, child_handler);
2179         signal(SIGPIPE, SIG_IGN);
2180
2181         /* ensure that the random number generators are seeded with a different value every time
2182            Asterisk is started
2183         */
2184         srand((unsigned int) getpid() + (unsigned int) time(NULL));
2185         srandom((unsigned int) getpid() + (unsigned int) time(NULL));
2186
2187         if (init_logger()) {
2188                 printf(term_quit());
2189                 exit(1);
2190         }
2191         if (dnsmgr_init()) {
2192                 printf(term_quit());
2193                 exit(1);
2194         }
2195         /* load 'preload' modules, required for access to Realtime-mapped configuration files */
2196         if (load_modules(1)) {
2197                 printf(term_quit());
2198                 exit(1);
2199         }
2200         ast_channels_init();
2201         if (init_manager()) {
2202                 printf(term_quit());
2203                 exit(1);
2204         }
2205         if (ast_cdr_engine_init()) {
2206                 printf(term_quit());
2207                 exit(1);
2208         }
2209         if (ast_device_state_engine_init()) {
2210                 printf(term_quit());
2211                 exit(1);
2212         }
2213         ast_rtp_init();
2214         if (ast_image_init()) {
2215                 printf(term_quit());
2216                 exit(1);
2217         }
2218         if (ast_file_init()) {
2219                 printf(term_quit());
2220                 exit(1);
2221         }
2222         if (load_pbx()) {
2223                 printf(term_quit());
2224                 exit(1);
2225         }
2226         if (load_modules(0)) {
2227                 printf(term_quit());
2228                 exit(1);
2229         }
2230         if (init_framer()) {
2231                 printf(term_quit());
2232                 exit(1);
2233         }
2234         if (astdb_init()) {
2235                 printf(term_quit());
2236                 exit(1);
2237         }
2238         if (ast_enum_init()) {
2239                 printf(term_quit());
2240                 exit(1);
2241         }
2242 #if 0
2243         /* This should no longer be necessary */
2244         /* sync cust config and reload some internals in case a custom config handler binded to them */
2245         read_ast_cust_config();
2246         reload_logger(0);
2247         reload_manager();
2248         ast_enum_reload();
2249         ast_rtp_reload();
2250 #endif
2251
2252
2253         /* We might have the option of showing a console, but for now just
2254            do nothing... */
2255         if (option_console && !option_verbose)
2256                 ast_verbose(" ]\n");
2257         if (option_verbose || option_console)
2258                 ast_verbose(term_color(tmp, "Asterisk Ready.\n", COLOR_BRWHITE, COLOR_BLACK, sizeof(tmp)));
2259         if (option_nofork)
2260                 consolethread = pthread_self();
2261         fully_booted = 1;
2262         pthread_sigmask(SIG_UNBLOCK, &sigs, NULL);
2263 #ifdef __AST_DEBUG_MALLOC
2264         __ast_mm_init();
2265 #endif
2266         time(&ast_startuptime);
2267         ast_cli_register_multiple(core_cli, sizeof(core_cli) / sizeof(core_cli[0]));
2268         if (option_console) {
2269                 /* Console stuff now... */
2270                 /* Register our quit function */
2271                 char title[256];
2272                 set_icon("Asterisk");
2273                 snprintf(title, sizeof(title), "Asterisk Console on '%s' (pid %d)", hostname, ast_mainpid);
2274                 set_title(title);
2275
2276                 for (;;) {
2277                         buf = (char *)el_gets(el, &num);
2278                         if (buf) {
2279                                 if (buf[strlen(buf)-1] == '\n')
2280                                         buf[strlen(buf)-1] = '\0';
2281
2282                                 consolehandler((char *)buf);
2283                         } else {
2284                                 if (write(STDOUT_FILENO, "\nUse EXIT or QUIT to exit the asterisk console\n",
2285                                                                   strlen("\nUse EXIT or QUIT to exit the asterisk console\n")) < 0) {
2286                                         /* Whoa, stdout disappeared from under us... Make /dev/null's */
2287                                         int fd;
2288                                         fd = open("/dev/null", O_RDWR);
2289                                         if (fd > -1) {
2290                                                 dup2(fd, STDOUT_FILENO);
2291                                                 dup2(fd, STDIN_FILENO);
2292                                         } else
2293                                                 ast_log(LOG_WARNING, "Failed to open /dev/null to recover from dead console.  Bad things will happen!\n");
2294                                         break;
2295                                 }
2296                         }
2297                 }
2298
2299         }
2300         /* Do nothing */
2301         for(;;)  {      /* apparently needed for the MACos */
2302                 struct pollfd p = { -1 /* no descriptor */, 0, 0 };
2303                 poll(&p, 0, -1);
2304         }
2305         return 0;
2306 }