main/asterisk.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2008, 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  * \par Developer Documentation for Asterisk
  25  * This is the main developer documentation for Asterisk. It is
  26  * generated by running "make progdocs".
  27  * \par Additional documentation
  28  * \arg \ref DevDoc
  29  * \arg \ref ConfigFiles
  30  *
  31  * \section copyright Copyright and author
  32  *
  33  * Copyright (C) 1999 - 2008, Digium, Inc.
  34  * Asterisk is a trademark registered by Digium, Inc.
  35  *
  36  * \author Mark Spencer <markster@digium.com>
  37  * Also see \ref AstCREDITS
  38  *
  39  * \section license License
  40  * See http://www.asterisk.org for more information about
  41  * the Asterisk project. Please do not directly contact
  42  * any of the maintainers of this project for assistance;
  43  * the project provides a web site, mailing lists and IRC
  44  * channels for your use.
  45  *
  46  * This program is free software, distributed under the terms of
  47  * the GNU General Public License Version 2. See the LICENSE file
  48  * at the top of the source tree.
  49  *
  50  * \verbinclude LICENSE
  51  *
  52  */
  53
  54 /*! \file
  55   \brief Top level source file for Asterisk  - the Open Source PBX. Implementation
  56   of PBX core functions and CLI interface.
  57
  58  */
  59
  60 #include "asterisk.h"
  61
  62 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  63
  64 #include "asterisk/_private.h"
  65
  66 #undef sched_setscheduler
  67 #undef setpriority
  68 #include <sys/time.h>
  69 #include <fcntl.h>
  70 #include <signal.h>
  71 #include <sched.h>
  72 #include <sys/un.h>
  73 #include <sys/wait.h>
  74 #include <ctype.h>
  75 #include <sys/resource.h>
  76 #include <grp.h>
  77 #include <pwd.h>
  78 #include <sys/stat.h>
  79 #if defined(HAVE_SYSINFO)
  80 #include <sys/sysinfo.h>
  81 #endif
  82 #ifdef linux
  83 #include <sys/prctl.h>
  84 #ifdef HAVE_CAP
  85 #include <sys/capability.h>
  86 #endif /* HAVE_CAP */
  87 #endif /* linux */
  88 #include <regex.h>
  89
  90 #if defined(SOLARIS)
  91 int daemon(int, int);  /* defined in libresolv of all places */
  92 #include <sys/loadavg.h>
  93 #endif
  94
  95 #include "asterisk/paths.h"     /* we define here the variables so better agree on the prototype */
  96 #include "asterisk/network.h"
  97 #include "asterisk/cli.h"
  98 #include "asterisk/channel.h"
  99 #include "asterisk/features.h"
 100 #include "asterisk/ulaw.h"
 101 #include "asterisk/alaw.h"
 102 #include "asterisk/callerid.h"
 103 #include "asterisk/image.h"
 104 #include "asterisk/tdd.h"
 105 #include "asterisk/term.h"
 106 #include "asterisk/manager.h"
 107 #include "asterisk/cdr.h"
 108 #include "asterisk/pbx.h"
 109 #include "asterisk/enum.h"
 110 #include "asterisk/rtp.h"
 111 #include "asterisk/http.h"
 112 #include "asterisk/udptl.h"
 113 #include "asterisk/app.h"
 114 #include "asterisk/lock.h"
 115 #include "asterisk/utils.h"
 116 #include "asterisk/file.h"
 117 #include "asterisk/io.h"
 118 #include "editline/histedit.h"
 119 #include "asterisk/config.h"
 120 #include "asterisk/version.h"
 121 #include "asterisk/linkedlists.h"
 122 #include "asterisk/devicestate.h"
 123 #include "asterisk/module.h"
 124
 125 #include "asterisk/doxyref.h"           /* Doxygen documentation */
 126
 127 #include "../defaults.h"
 128
 129 #ifndef AF_LOCAL
 130 #define AF_LOCAL AF_UNIX
 131 #define PF_LOCAL PF_UNIX
 132 #endif
 133
 134 #define AST_MAX_CONNECTS 128
 135 #define NUM_MSGS 64
 136
 137 /*! \brief Welcome message when starting a CLI interface */
 138 #define WELCOME_MESSAGE \
 139     ast_verbose("Asterisk %s, Copyright (C) 1999 - 2008 Digium, Inc. and others.\n" \
 140                 "Created by Mark Spencer <markster@digium.com>\n" \
 141                 "Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.\n" \
 142                 "This is free software, with components licensed under the GNU General Public\n" \
 143                 "License version 2 and other licenses; you are welcome to redistribute it under\n" \
 144                 "certain conditions. Type 'core show license' for details.\n" \
 145                 "=========================================================================\n" \
 146                 "NOTE: This is a development version of Asterisk, and should not be used in\n" \
 147                 "production installations.\n", ast_get_version());
 148
 149 /*! \defgroup main_options Main Configuration Options
 150  * \brief Main configuration options from asterisk.conf or OS command line on starting Asterisk.
 151  * \arg \ref Config_ast "asterisk.conf"
 152  * \note Some of them can be changed in the CLI
 153  */
 154 /*! @{ */
 155
 156 struct ast_flags ast_options = { AST_DEFAULT_OPTIONS };
 157
 158 int option_verbose;                             /*!< Verbosity level */
 159 int option_debug;                               /*!< Debug level */
 160 double option_maxload;                          /*!< Max load avg on system */
 161 int option_maxcalls;                            /*!< Max number of active calls */
 162 int option_maxfiles;                            /*!< Max number of open file handles (files, sockets) */
 163 #if defined(HAVE_SYSINFO)
 164 long option_minmemfree;                         /*!< Minimum amount of free system memory - stop accepting calls if free memory falls below this watermark */
 165 #endif
 166
 167 /*! @} */
 168
 169 /* XXX tmpdir is a subdir of the spool directory, and no way to remap it */
 170 char record_cache_dir[AST_CACHE_DIR_LEN] = DEFAULT_TMP_DIR;
 171
 172 static int ast_socket = -1;             /*!< UNIX Socket for allowing remote control */
 173 static int ast_consock = -1;            /*!< UNIX Socket for controlling another asterisk */
 174 pid_t ast_mainpid;
 175 struct console {
 176         int fd;                         /*!< File descriptor */
 177         int p[2];                       /*!< Pipe */
 178         pthread_t t;                    /*!< Thread of handler */
 179         int mute;                       /*!< Is the console muted for logs */
 180 };
 181
 182 struct ast_atexit {
 183         void (*func)(void);
 184         AST_RWLIST_ENTRY(ast_atexit) list;
 185 };
 186
 187 static AST_RWLIST_HEAD_STATIC(atexits, ast_atexit);
 188
 189 struct timeval ast_startuptime;
 190 struct timeval ast_lastreloadtime;
 191
 192 static History *el_hist;
 193 static EditLine *el;
 194 static char *remotehostname;
 195
 196 struct console consoles[AST_MAX_CONNECTS];
 197
 198 char defaultlanguage[MAX_LANGUAGE] = DEFAULT_LANGUAGE;
 199
 200 static int ast_el_add_history(char *);
 201 static int ast_el_read_history(char *);
 202 static int ast_el_write_history(char *);
 203
 204 struct _cfg_paths {
 205         char config_dir[PATH_MAX];
 206         char module_dir[PATH_MAX];
 207         char spool_dir[PATH_MAX];
 208         char monitor_dir[PATH_MAX];
 209         char var_dir[PATH_MAX];
 210         char data_dir[PATH_MAX];
 211         char log_dir[PATH_MAX];
 212         char agi_dir[PATH_MAX];
 213         char run_dir[PATH_MAX];
 214         char key_dir[PATH_MAX];
 215
 216         char config_file[PATH_MAX];
 217         char db_path[PATH_MAX];
 218         char pid_path[PATH_MAX];
 219         char socket_path[PATH_MAX];
 220         char run_user[PATH_MAX];
 221         char run_group[PATH_MAX];
 222         char system_name[128];
 223 };
 224
 225 static struct _cfg_paths cfg_paths;
 226
 227 const char *ast_config_AST_CONFIG_DIR   = cfg_paths.config_dir;
 228 const char *ast_config_AST_CONFIG_FILE  = cfg_paths.config_file;
 229 const char *ast_config_AST_MODULE_DIR   = cfg_paths.module_dir;
 230 const char *ast_config_AST_SPOOL_DIR    = cfg_paths.spool_dir;
 231 const char *ast_config_AST_MONITOR_DIR  = cfg_paths.monitor_dir;
 232 const char *ast_config_AST_VAR_DIR      = cfg_paths.var_dir;
 233 const char *ast_config_AST_DATA_DIR     = cfg_paths.data_dir;
 234 const char *ast_config_AST_LOG_DIR      = cfg_paths.log_dir;
 235 const char *ast_config_AST_AGI_DIR      = cfg_paths.agi_dir;
 236 const char *ast_config_AST_KEY_DIR      = cfg_paths.key_dir;
 237 const char *ast_config_AST_RUN_DIR      = cfg_paths.run_dir;
 238
 239 const char *ast_config_AST_DB           = cfg_paths.db_path;
 240 const char *ast_config_AST_PID          = cfg_paths.pid_path;
 241 const char *ast_config_AST_SOCKET       = cfg_paths.socket_path;
 242 const char *ast_config_AST_RUN_USER     = cfg_paths.run_user;
 243 const char *ast_config_AST_RUN_GROUP    = cfg_paths.run_group;
 244 const char *ast_config_AST_SYSTEM_NAME  = cfg_paths.system_name;
 245
 246 static char ast_config_AST_CTL_PERMISSIONS[PATH_MAX];
 247 static char ast_config_AST_CTL_OWNER[PATH_MAX] = "\0";
 248 static char ast_config_AST_CTL_GROUP[PATH_MAX] = "\0";
 249 static char ast_config_AST_CTL[PATH_MAX] = "asterisk.ctl";
 250
 251 extern const char *ast_build_hostname;
 252 extern const char *ast_build_kernel;
 253 extern const char *ast_build_machine;
 254 extern const char *ast_build_os;
 255 extern const char *ast_build_date;
 256 extern const char *ast_build_user;
 257
 258 static char *_argv[256];
 259 static int shuttingdown;
 260 static int restartnow;
 261 static pthread_t consolethread = AST_PTHREADT_NULL;
 262 static int canary_pid = 0;
 263 static char canary_filename[128];
 264
 265 static char randompool[256];
 266
 267 static int sig_alert_pipe[2] = { -1, -1 };
 268 static struct {
 269          unsigned int need_reload:1;
 270          unsigned int need_quit:1;
 271 } sig_flags;
 272
 273 #if !defined(LOW_MEMORY)
 274 struct file_version {
 275         AST_RWLIST_ENTRY(file_version) list;
 276         const char *file;
 277         char *version;
 278 };
 279
 280 static AST_RWLIST_HEAD_STATIC(file_versions, file_version);
 281
 282 void ast_register_file_version(const char *file, const char *version)
 283 {
 284         struct file_version *new;
 285         char *work;
 286         size_t version_length;
 287
 288         work = ast_strdupa(version);
 289         work = ast_strip(ast_strip_quoted(work, "$", "$"));
 290         version_length = strlen(work) + 1;
 291
 292         if (!(new = ast_calloc(1, sizeof(*new) + version_length)))
 293                 return;
 294
 295         new->file = file;
 296         new->version = (char *) new + sizeof(*new);
 297         memcpy(new->version, work, version_length);
 298         AST_RWLIST_WRLOCK(&file_versions);
 299         AST_RWLIST_INSERT_HEAD(&file_versions, new, list);
 300         AST_RWLIST_UNLOCK(&file_versions);
 301 }
 302
 303 void ast_unregister_file_version(const char *file)
 304 {
 305         struct file_version *find;
 306
 307         AST_RWLIST_WRLOCK(&file_versions);
 308         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&file_versions, find, list) {
 309                 if (!strcasecmp(find->file, file)) {
 310                         AST_RWLIST_REMOVE_CURRENT(list);
 311                         break;
 312                 }
 313         }
 314         AST_RWLIST_TRAVERSE_SAFE_END;
 315         AST_RWLIST_UNLOCK(&file_versions);
 316
 317         if (find)
 318                 ast_free(find);
 319 }
 320
 321 /*! \brief Find version for given module name */
 322 const char *ast_file_version_find(const char *file)
 323 {
 324         struct file_version *iterator;
 325
 326         AST_RWLIST_WRLOCK(&file_versions);
 327         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&file_versions, iterator, list) {
 328                 if (!strcasecmp(iterator->file, file))
 329                         break;
 330         }
 331         AST_RWLIST_TRAVERSE_SAFE_END;
 332         AST_RWLIST_UNLOCK(&file_versions);
 333         if (iterator)
 334                 return iterator->version;
 335         return NULL;
 336 }
 337
 338
 339
 340 struct thread_list_t {
 341         AST_RWLIST_ENTRY(thread_list_t) list;
 342         char *name;
 343         pthread_t id;
 344 };
 345
 346 static AST_RWLIST_HEAD_STATIC(thread_list, thread_list_t);
 347
 348 void ast_register_thread(char *name)
 349 {
 350         struct thread_list_t *new = ast_calloc(1, sizeof(*new));
 351
 352         if (!new)
 353                 return;
 354         new->id = pthread_self();
 355         new->name = name; /* steal the allocated memory for the thread name */
 356         AST_RWLIST_WRLOCK(&thread_list);
 357         AST_RWLIST_INSERT_HEAD(&thread_list, new, list);
 358         AST_RWLIST_UNLOCK(&thread_list);
 359 }
 360
 361 void ast_unregister_thread(void *id)
 362 {
 363         struct thread_list_t *x;
 364
 365         AST_RWLIST_WRLOCK(&thread_list);
 366         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&thread_list, x, list) {
 367                 if ((void *) x->id == id) {
 368                         AST_RWLIST_REMOVE_CURRENT(list);
 369                         break;
 370                 }
 371         }
 372         AST_RWLIST_TRAVERSE_SAFE_END;
 373         AST_RWLIST_UNLOCK(&thread_list);
 374         if (x) {
 375                 ast_free(x->name);
 376                 ast_free(x);
 377         }
 378 }
 379
 380 /*! \brief Give an overview of core settings */
 381 static char *handle_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 382 {
 383         char buf[BUFSIZ];
 384         struct ast_tm tm;
 385
 386         switch (cmd) {
 387         case CLI_INIT:
 388                 e->command = "core show settings";
 389                 e->usage = "Usage: core show settings\n"
 390                            "       Show core misc settings";
 391                 return NULL;
 392         case CLI_GENERATE:
 393                 return NULL;
 394         }
 395
 396         ast_cli(a->fd, "\nPBX Core settings\n");
 397         ast_cli(a->fd, "-----------------\n");
 398         ast_cli(a->fd, "  Version:                     %s\n", ast_get_version());
 399         if (option_maxcalls)
 400                 ast_cli(a->fd, "  Max. calls:                  %d (Current %d)\n", option_maxcalls, ast_active_channels());
 401         else
 402                 ast_cli(a->fd, "  Max. calls:                  Not set\n");
 403         if (option_maxfiles)
 404                 ast_cli(a->fd, "  Max. open file handles:      %d\n", option_maxfiles);
 405         else
 406                 ast_cli(a->fd, "  Max. open file handles:      Not set\n");
 407         ast_cli(a->fd, "  Verbosity:                   %d\n", option_verbose);
 408         ast_cli(a->fd, "  Debug level:                 %d\n", option_debug);
 409         ast_cli(a->fd, "  Max load avg:                %lf\n", option_maxload);
 410 #if defined(HAVE_SYSINFO)
 411         ast_cli(a->fd, "  Min Free Memory:             %ld MB\n", option_minmemfree);
 412 #endif
 413         if (ast_localtime(&ast_startuptime, &tm, NULL)) {
 414                 ast_strftime(buf, sizeof(buf), "%H:%M:%S", &tm);
 415                 ast_cli(a->fd, "  Startup time:                %s\n", buf);
 416         }
 417         if (ast_localtime(&ast_lastreloadtime, &tm, NULL)) {
 418                 ast_strftime(buf, sizeof(buf), "%H:%M:%S", &tm);
 419                 ast_cli(a->fd, "  Last reload time:            %s\n", buf);
 420         }
 421         ast_cli(a->fd, "  System:                      %s/%s built by %s on %s %s\n", ast_build_os, ast_build_kernel, ast_build_user, ast_build_machine, ast_build_date);
 422         ast_cli(a->fd, "  System name:                 %s\n", ast_config_AST_SYSTEM_NAME);
 423         ast_cli(a->fd, "  Default language:            %s\n", defaultlanguage);
 424         ast_cli(a->fd, "  Language prefix:             %s\n", ast_language_is_prefix ? "Enabled" : "Disabled");
 425         ast_cli(a->fd, "  User name and group:         %s/%s\n", ast_config_AST_RUN_USER, ast_config_AST_RUN_GROUP);
 426         ast_cli(a->fd, "  Executable includes:         %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_EXEC_INCLUDES) ? "Enabled" : "Disabled");
 427         ast_cli(a->fd, "  Transcode via SLIN:          %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_TRANSCODE_VIA_SLIN) ? "Enabled" : "Disabled");
 428         ast_cli(a->fd, "  Internal timing:             %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_INTERNAL_TIMING) ? "Enabled" : "Disabled");
 429         ast_cli(a->fd, "  Transmit silence during rec: %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_INTERNAL_TIMING) ? "Enabled" : "Disabled");
 430
 431         ast_cli(a->fd, "\n* Subsystems\n");
 432         ast_cli(a->fd, "  -------------\n");
 433         ast_cli(a->fd, "  Manager (AMI):               %s\n", check_manager_enabled() ? "Enabled" : "Disabled");
 434         ast_cli(a->fd, "  Web Manager (AMI/HTTP):      %s\n", check_webmanager_enabled() ? "Enabled" : "Disabled");
 435         ast_cli(a->fd, "  Call data records:           %s\n", check_cdr_enabled() ? "Enabled" : "Disabled");
 436         ast_cli(a->fd, "  Realtime Architecture (ARA): %s\n", ast_realtime_enabled() ? "Enabled" : "Disabled");
 437
 438         /*! \todo we could check musiconhold, voicemail, smdi, adsi, queues  */
 439
 440         ast_cli(a->fd, "\n* Directories\n");
 441         ast_cli(a->fd, "  -------------\n");
 442         ast_cli(a->fd, "  Configuration file:          %s\n", ast_config_AST_CONFIG_FILE);
 443         ast_cli(a->fd, "  Configuration directory:     %s\n", ast_config_AST_CONFIG_DIR);
 444         ast_cli(a->fd, "  Module directory:            %s\n", ast_config_AST_MODULE_DIR);
 445         ast_cli(a->fd, "  Spool directory:             %s\n", ast_config_AST_SPOOL_DIR);
 446         ast_cli(a->fd, "  Log directory:               %s\n", ast_config_AST_LOG_DIR);
 447         ast_cli(a->fd, "\n\n");
 448         return CLI_SUCCESS;
 449 }
 450
 451 static char *handle_show_threads(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 452 {
 453         int count = 0;
 454         struct thread_list_t *cur;
 455         switch (cmd) {
 456         case CLI_INIT:
 457                 e->command = "core show threads";
 458                 e->usage =
 459                         "Usage: core show threads\n"
 460                         "       List threads currently active in the system.\n";
 461                 return NULL;
 462         case CLI_GENERATE:
 463                 return NULL;
 464         }
 465
 466         AST_RWLIST_RDLOCK(&thread_list);
 467         AST_RWLIST_TRAVERSE(&thread_list, cur, list) {
 468                 ast_cli(a->fd, "%p %s\n", (void *)cur->id, cur->name);
 469                 count++;
 470         }
 471         AST_RWLIST_UNLOCK(&thread_list);
 472         ast_cli(a->fd, "%d threads listed.\n", count);
 473         return CLI_SUCCESS;
 474 }
 475
 476 #if defined(HAVE_SYSINFO)
 477 /*! \brief Give an overview of system statistics */
 478 static char *handle_show_sysinfo(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 479 {
 480         struct sysinfo sys_info;
 481         switch (cmd) {
 482         case CLI_INIT:
 483                 e->command = "core show sysinfo";
 484                 e->usage =
 485                         "Usage: core show sysinfo\n"
 486                         "       List current system information.\n";
 487                 return NULL;
 488         case CLI_GENERATE:
 489                 return NULL;
 490         }
 491         if (sysinfo(&sys_info)) {
 492                 ast_cli(a->fd, "FAILED to retrieve system information\n\n");
 493                 return CLI_FAILURE;
 494         }
 495         ast_cli(a->fd, "\nSystem Statistics\n");
 496         ast_cli(a->fd, "-----------------\n");
 497         ast_cli(a->fd, "  System Uptime:             %ld hours\n", sys_info.uptime/3600);
 498         ast_cli(a->fd, "  Total RAM:                 %ld KiB\n", (sys_info.totalram / sys_info.mem_unit)/1024);
 499         ast_cli(a->fd, "  Free RAM:                  %ld KiB\n", (sys_info.freeram / sys_info.mem_unit)/1024);
 500         ast_cli(a->fd, "  Buffer RAM:                %ld KiB\n", (sys_info.bufferram / sys_info.mem_unit)/1024);
 501         ast_cli(a->fd, "  Total Swap Space:          %ld KiB\n", (sys_info.totalswap / sys_info.mem_unit)/1024);
 502         ast_cli(a->fd, "  Free Swap Space:           %ld KiB\n\n", (sys_info.freeswap / sys_info.mem_unit)/1024);
 503         ast_cli(a->fd, "  Number of Processes:       %d \n\n", sys_info.procs);
 504         return CLI_SUCCESS;
 505 }
 506 #endif
 507
 508 struct profile_entry {
 509         const char *name;
 510         uint64_t        scale;  /* if non-zero, values are scaled by this */
 511         int64_t mark;
 512         int64_t value;
 513         int64_t events;
 514 };
 515
 516 struct profile_data {
 517         int entries;
 518         int max_size;
 519         struct profile_entry e[0];
 520 };
 521
 522 static struct profile_data *prof_data;
 523
 524 /*! \brief allocates a counter with a given name and scale.
 525  * \return Returns the identifier of the counter.
 526  */
 527 int ast_add_profile(const char *name, uint64_t scale)
 528 {
 529         int l = sizeof(struct profile_data);
 530         int n = 10;     /* default entries */
 531
 532         if (prof_data == NULL) {
 533                 prof_data = ast_calloc(1, l + n*sizeof(struct profile_entry));
 534                 if (prof_data == NULL)
 535                         return -1;
 536                 prof_data->entries = 0;
 537                 prof_data->max_size = n;
 538         }
 539         if (prof_data->entries >= prof_data->max_size) {
 540                 void *p;
 541                 n = prof_data->max_size + 20;
 542                 p = ast_realloc(prof_data, l + n*sizeof(struct profile_entry));
 543                 if (p == NULL)
 544                         return -1;
 545                 prof_data = p;
 546                 prof_data->max_size = n;
 547         }
 548         n = prof_data->entries++;
 549         prof_data->e[n].name = ast_strdup(name);
 550         prof_data->e[n].value = 0;
 551         prof_data->e[n].events = 0;
 552         prof_data->e[n].mark = 0;
 553         prof_data->e[n].scale = scale;
 554         return n;
 555 }
 556
 557 int64_t ast_profile(int i, int64_t delta)
 558 {
 559         if (!prof_data || i < 0 || i > prof_data->entries)      /* invalid index */
 560                 return 0;
 561         if (prof_data->e[i].scale > 1)
 562                 delta /= prof_data->e[i].scale;
 563         prof_data->e[i].value += delta;
 564         prof_data->e[i].events++;
 565         return prof_data->e[i].value;
 566 }
 567
 568 #if defined ( __i386__) && (defined(__FreeBSD__) || defined(linux))
 569 #if defined(__FreeBSD__)
 570 #include <machine/cpufunc.h>
 571 #elif defined(linux)
 572 static __inline uint64_t
 573 rdtsc(void)
 574 {
 575         uint64_t rv;
 576
 577         __asm __volatile(".byte 0x0f, 0x31" : "=A" (rv));
 578         return (rv);
 579 }
 580 #endif
 581 #else   /* supply a dummy function on other platforms */
 582 static __inline uint64_t
 583 rdtsc(void)
 584 {
 585         return 0;
 586 }
 587 #endif
 588
 589 int64_t ast_mark(int i, int startstop)
 590 {
 591         if (!prof_data || i < 0 || i > prof_data->entries) /* invalid index */
 592                 return 0;
 593         if (startstop == 1)
 594                 prof_data->e[i].mark = rdtsc();
 595         else {
 596                 prof_data->e[i].mark = (rdtsc() - prof_data->e[i].mark);
 597                 if (prof_data->e[i].scale > 1)
 598                         prof_data->e[i].mark /= prof_data->e[i].scale;
 599                 prof_data->e[i].value += prof_data->e[i].mark;
 600                 prof_data->e[i].events++;
 601         }
 602         return prof_data->e[i].mark;
 603 }
 604
 605 #define DEFINE_PROFILE_MIN_MAX_VALUES min = 0; \
 606         max = prof_data->entries;\
 607         if  (a->argc > 3) { /* specific entries */ \
 608                 if (isdigit(a->argv[3][0])) { \
 609                         min = atoi(a->argv[3]); \
 610                         if (a->argc == 5 && strcmp(a->argv[4], "-")) \
 611                                 max = atoi(a->argv[4]); \
 612                 } else \
 613                         search = a->argv[3]; \
 614         } \
 615         if (max > prof_data->entries) \
 616                 max = prof_data->entries;
 617
 618 static char *handle_show_profile(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 619 {
 620         int i, min, max;
 621         char *search = NULL;
 622         switch (cmd) {
 623         case CLI_INIT:
 624                 e->command = "core show profile";
 625                 e->usage = "Usage: core show profile\n"
 626                            "       show profile information";
 627                 return NULL;
 628         case CLI_GENERATE:
 629                 return NULL;
 630         }
 631
 632         if (prof_data == NULL)
 633                 return 0;
 634
 635         DEFINE_PROFILE_MIN_MAX_VALUES;
 636         ast_cli(a->fd, "profile values (%d, allocated %d)\n-------------------\n",
 637                 prof_data->entries, prof_data->max_size);
 638         ast_cli(a->fd, "%6s   %8s  %10s %12s %12s  %s\n", "ID", "Scale", "Events",
 639                         "Value", "Average", "Name");
 640         for (i = min; i < max; i++) {
 641                 struct profile_entry *e = &prof_data->e[i];
 642                 if (!search || strstr(prof_data->e[i].name, search))
 643                     ast_cli(a->fd, "%6d: [%8ld] %10ld %12lld %12lld  %s\n",
 644                         i,
 645                         (long)e->scale,
 646                         (long)e->events, (long long)e->value,
 647                         (long long)(e->events ? e->value / e->events : e->value),
 648                         e->name);
 649         }
 650         return CLI_SUCCESS;
 651 }
 652
 653 static char *handle_clear_profile(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 654 {
 655         int i, min, max;
 656         char *search = NULL;
 657         switch (cmd) {
 658         case CLI_INIT:
 659                 e->command = "core clear profile";
 660                 e->usage = "Usage: core clear profile\n"
 661                            "       clear profile information";
 662                 return NULL;
 663         case CLI_GENERATE:
 664                 return NULL;
 665         }
 666
 667         if (prof_data == NULL)
 668                 return 0;
 669
 670         DEFINE_PROFILE_MIN_MAX_VALUES;
 671         for (i= min; i < max; i++) {
 672                 if (!search || strstr(prof_data->e[i].name, search)) {
 673                         prof_data->e[i].value = 0;
 674                         prof_data->e[i].events = 0;
 675                 }
 676         }
 677         return CLI_SUCCESS;
 678 }
 679 #undef DEFINE_PROFILE_MIN_MAX_VALUES
 680
 681 /*! \brief CLI command to list module versions */
 682 static char *handle_show_version_files(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 683 {
 684 #define FORMAT "%-25.25s %-40.40s\n"
 685         struct file_version *iterator;
 686         regex_t regexbuf;
 687         int havepattern = 0;
 688         int havename = 0;
 689         int count_files = 0;
 690         char *ret = NULL;
 691         int matchlen, which = 0;
 692         struct file_version *find;
 693
 694         switch (cmd) {
 695         case CLI_INIT:
 696                 e->command = "core show file version [like]";
 697                 e->usage =
 698                         "Usage: core show file version [like <pattern>]\n"
 699                         "       Lists the revision numbers of the files used to build this copy of Asterisk.\n"
 700                         "       Optional regular expression pattern is used to filter the file list.\n";
 701                 return NULL;
 702         case CLI_GENERATE:
 703                 matchlen = strlen(a->word);
 704                 if (a->pos != 3)
 705                         return NULL;
 706                 AST_RWLIST_RDLOCK(&file_versions);
 707                 AST_RWLIST_TRAVERSE(&file_versions, find, list) {
 708                         if (!strncasecmp(a->word, find->file, matchlen) && ++which > a->n) {
 709                                 ret = ast_strdup(find->file);
 710                                 break;
 711                         }
 712                 }
 713                 AST_RWLIST_UNLOCK(&file_versions);
 714                 return ret;
 715         }
 716
 717
 718         switch (a->argc) {
 719         case 6:
 720                 if (!strcasecmp(a->argv[4], "like")) {
 721                         if (regcomp(&regexbuf, a->argv[5], REG_EXTENDED | REG_NOSUB))
 722                                 return CLI_SHOWUSAGE;
 723                         havepattern = 1;
 724                 } else
 725                         return CLI_SHOWUSAGE;
 726                 break;
 727         case 5:
 728                 havename = 1;
 729                 break;
 730         case 4:
 731                 break;
 732         default:
 733                 return CLI_SHOWUSAGE;
 734         }
 735
 736         ast_cli(a->fd, FORMAT, "File", "Revision");
 737         ast_cli(a->fd, FORMAT, "----", "--------");
 738         AST_RWLIST_RDLOCK(&file_versions);
 739         AST_RWLIST_TRAVERSE(&file_versions, iterator, list) {
 740                 if (havename && strcasecmp(iterator->file, a->argv[4]))
 741                         continue;
 742
 743                 if (havepattern && regexec(&regexbuf, iterator->file, 0, NULL, 0))
 744                         continue;
 745
 746                 ast_cli(a->fd, FORMAT, iterator->file, iterator->version);
 747                 count_files++;
 748                 if (havename)
 749                         break;
 750         }
 751         AST_RWLIST_UNLOCK(&file_versions);
 752         if (!havename) {
 753                 ast_cli(a->fd, "%d files listed.\n", count_files);
 754         }
 755
 756         if (havepattern)
 757                 regfree(&regexbuf);
 758
 759         return CLI_SUCCESS;
 760 #undef FORMAT
 761 }
 762
 763 #endif /* ! LOW_MEMORY */
 764
 765 int ast_register_atexit(void (*func)(void))
 766 {
 767         struct ast_atexit *ae;
 768
 769         if (!(ae = ast_calloc(1, sizeof(*ae))))
 770                 return -1;
 771
 772         ae->func = func;
 773
 774         ast_unregister_atexit(func);
 775
 776         AST_RWLIST_WRLOCK(&atexits);
 777         AST_RWLIST_INSERT_HEAD(&atexits, ae, list);
 778         AST_RWLIST_UNLOCK(&atexits);
 779
 780         return 0;
 781 }
 782
 783 void ast_unregister_atexit(void (*func)(void))
 784 {
 785         struct ast_atexit *ae = NULL;
 786
 787         AST_RWLIST_WRLOCK(&atexits);
 788         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&atexits, ae, list) {
 789                 if (ae->func == func) {
 790                         AST_RWLIST_REMOVE_CURRENT(list);
 791                         break;
 792                 }
 793         }
 794         AST_RWLIST_TRAVERSE_SAFE_END;
 795         AST_RWLIST_UNLOCK(&atexits);
 796
 797         if (ae)
 798                 free(ae);
 799 }
 800
 801 static int fdprint(int fd, const char *s)
 802 {
 803         return write(fd, s, strlen(s) + 1);
 804 }
 805
 806 /*! \brief NULL handler so we can collect the child exit status */
 807 static void null_sig_handler(int signal)
 808 {
 809
 810 }
 811
 812 AST_MUTEX_DEFINE_STATIC(safe_system_lock);
 813 /*! \brief Keep track of how many threads are currently trying to wait*() on
 814  *  a child process */
 815 static unsigned int safe_system_level = 0;
 816 static void *safe_system_prev_handler;
 817
 818 void ast_replace_sigchld(void)
 819 {
 820         unsigned int level;
 821
 822         ast_mutex_lock(&safe_system_lock);
 823         level = safe_system_level++;
 824
 825         /* only replace the handler if it has not already been done */
 826         if (level == 0)
 827                 safe_system_prev_handler = signal(SIGCHLD, null_sig_handler);
 828
 829         ast_mutex_unlock(&safe_system_lock);
 830 }
 831
 832 void ast_unreplace_sigchld(void)
 833 {
 834         unsigned int level;
 835
 836         ast_mutex_lock(&safe_system_lock);
 837         level = --safe_system_level;
 838
 839         /* only restore the handler if we are the last one */
 840         if (level == 0)
 841                 signal(SIGCHLD, safe_system_prev_handler);
 842
 843         ast_mutex_unlock(&safe_system_lock);
 844 }
 845
 846 int ast_safe_system(const char *s)
 847 {
 848         pid_t pid;
 849 #ifdef HAVE_WORKING_FORK
 850         int x;
 851 #endif
 852         int res;
 853         struct rusage rusage;
 854         int status;
 855
 856 #if defined(HAVE_WORKING_FORK) || defined(HAVE_WORKING_VFORK)
 857         ast_replace_sigchld();
 858
 859 #ifdef HAVE_WORKING_FORK
 860         pid = fork();
 861 #else
 862         pid = vfork();
 863 #endif
 864
 865         if (pid == 0) {
 866 #ifdef HAVE_WORKING_FORK
 867                 if (ast_opt_high_priority)
 868                         ast_set_priority(0);
 869                 /* Close file descriptors and launch system command */
 870                 for (x = STDERR_FILENO + 1; x < 4096; x++)
 871                         close(x);
 872 #endif
 873                 execl("/bin/sh", "/bin/sh", "-c", s, (char *) NULL);
 874                 _exit(1);
 875         } else if (pid > 0) {
 876                 for (;;) {
 877                         res = wait4(pid, &status, 0, &rusage);
 878                         if (res > -1) {
 879                                 res = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
 880                                 break;
 881                         } else if (errno != EINTR)
 882                                 break;
 883                 }
 884         } else {
 885                 ast_log(LOG_WARNING, "Fork failed: %s\n", strerror(errno));
 886                 res = -1;
 887         }
 888
 889         ast_unreplace_sigchld();
 890 #else
 891         res = -1;
 892 #endif
 893
 894         return res;
 895 }
 896
 897 /*!
 898  * \brief mute or unmute a console from logging
 899  */
 900 void ast_console_toggle_mute(int fd, int silent) {
 901         int x;
 902         for (x = 0;x < AST_MAX_CONNECTS; x++) {
 903                 if (fd == consoles[x].fd) {
 904                         if (consoles[x].mute) {
 905                                 consoles[x].mute = 0;
 906                                 if (!silent)
 907                                         ast_cli(fd, "Console is not muted anymore.\n");
 908                         } else {
 909                                 consoles[x].mute = 1;
 910                                 if (!silent)
 911                                         ast_cli(fd, "Console is muted.\n");
 912                         }
 913                         return;
 914                 }
 915         }
 916         ast_cli(fd, "Couldn't find remote console.\n");
 917 }
 918
 919 /*!
 920  * \brief log the string to all attached console clients
 921  */
 922 static void ast_network_puts_mutable(const char *string)
 923 {
 924         int x;
 925         for (x = 0;x < AST_MAX_CONNECTS; x++) {
 926                 if (consoles[x].mute)
 927                         continue;
 928                 if (consoles[x].fd > -1)
 929                         fdprint(consoles[x].p[1], string);
 930         }
 931 }
 932
 933 /*!
 934  * \brief log the string to the console, and all attached
 935  * console clients
 936  */
 937 void ast_console_puts_mutable(const char *string)
 938 {
 939         fputs(string, stdout);
 940         fflush(stdout);
 941         ast_network_puts_mutable(string);
 942 }
 943
 944 /*!
 945  * \brief write the string to all attached console clients
 946  */
 947 static void ast_network_puts(const char *string)
 948 {
 949         int x;
 950         for (x = 0; x < AST_MAX_CONNECTS; x++) {
 951                 if (consoles[x].fd > -1)
 952                         fdprint(consoles[x].p[1], string);
 953         }
 954 }
 955
 956 /*!
 957  * write the string to the console, and all attached
 958  * console clients
 959  */
 960 void ast_console_puts(const char *string)
 961 {
 962         fputs(string, stdout);
 963         fflush(stdout);
 964         ast_network_puts(string);
 965 }
 966
 967 static void network_verboser(const char *s)
 968 {
 969         ast_network_puts_mutable(s);
 970 }
 971
 972 static pthread_t lthread;
 973
 974 static void *netconsole(void *vconsole)
 975 {
 976         struct console *con = vconsole;
 977         char hostname[MAXHOSTNAMELEN] = "";
 978         char tmp[512];
 979         int res;
 980         struct pollfd fds[2];
 981
 982         if (gethostname(hostname, sizeof(hostname)-1))
 983                 ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
 984         snprintf(tmp, sizeof(tmp), "%s/%ld/%s\n", hostname, (long)ast_mainpid, ast_get_version());
 985         fdprint(con->fd, tmp);
 986         for (;;) {
 987                 fds[0].fd = con->fd;
 988                 fds[0].events = POLLIN;
 989                 fds[0].revents = 0;
 990                 fds[1].fd = con->p[0];
 991                 fds[1].events = POLLIN;
 992                 fds[1].revents = 0;
 993
 994                 res = poll(fds, 2, -1);
 995                 if (res < 0) {
 996                         if (errno != EINTR)
 997                                 ast_log(LOG_WARNING, "poll returned < 0: %s\n", strerror(errno));
 998                         continue;
 999                 }
1000                 if (fds[0].revents) {
1001                         res = read(con->fd, tmp, sizeof(tmp));
1002                         if (res < 1) {
1003                                 break;
1004                         }
1005                         tmp[res] = 0;
1006                         ast_cli_command_multiple(con->fd, res, tmp);
1007                 }
1008                 if (fds[1].revents) {
1009                         res = read(con->p[0], tmp, sizeof(tmp));
1010                         if (res < 1) {
1011                                 ast_log(LOG_ERROR, "read returned %d\n", res);
1012                                 break;
1013                         }
1014                         res = write(con->fd, tmp, res);
1015                         if (res < 1)
1016                                 break;
1017                 }
1018         }
1019         ast_verb(3, "Remote UNIX connection disconnected\n");
1020         close(con->fd);
1021         close(con->p[0]);
1022         close(con->p[1]);
1023         con->fd = -1;
1024
1025         return NULL;
1026 }
1027
1028 static void *listener(void *unused)
1029 {
1030         struct sockaddr_un sunaddr;
1031         int s;
1032         socklen_t len;
1033         int x;
1034         int flags;
1035         struct pollfd fds[1];
1036         for (;;) {
1037                 if (ast_socket < 0)
1038                         return NULL;
1039                 fds[0].fd = ast_socket;
1040                 fds[0].events = POLLIN;
1041                 s = poll(fds, 1, -1);
1042                 pthread_testcancel();
1043                 if (s < 0) {
1044                         if (errno != EINTR)
1045                                 ast_log(LOG_WARNING, "poll returned error: %s\n", strerror(errno));
1046                         continue;
1047                 }
1048                 len = sizeof(sunaddr);
1049                 s = accept(ast_socket, (struct sockaddr *)&sunaddr, &len);
1050                 if (s < 0) {
1051                         if (errno != EINTR)
1052                                 ast_log(LOG_WARNING, "Accept returned %d: %s\n", s, strerror(errno));
1053                 } else {
1054                         for (x = 0; x < AST_MAX_CONNECTS; x++) {
1055                                 if (consoles[x].fd < 0) {
1056                                         if (socketpair(AF_LOCAL, SOCK_STREAM, 0, consoles[x].p)) {
1057                                                 ast_log(LOG_ERROR, "Unable to create pipe: %s\n", strerror(errno));
1058                                                 consoles[x].fd = -1;
1059                                                 fdprint(s, "Server failed to create pipe\n");
1060                                                 close(s);
1061                                                 break;
1062                                         }
1063                                         flags = fcntl(consoles[x].p[1], F_GETFL);
1064                                         fcntl(consoles[x].p[1], F_SETFL, flags | O_NONBLOCK);
1065                                         consoles[x].fd = s;
1066                                         consoles[x].mute = 1; /* Default is muted, we will un-mute if necessary */
1067                                         if (ast_pthread_create_detached_background(&consoles[x].t, NULL, netconsole, &consoles[x])) {
1068                                                 ast_log(LOG_ERROR, "Unable to spawn thread to handle connection: %s\n", strerror(errno));
1069                                                 close(consoles[x].p[0]);
1070                                                 close(consoles[x].p[1]);
1071                                                 consoles[x].fd = -1;
1072                                                 fdprint(s, "Server failed to spawn thread\n");
1073                                                 close(s);
1074                                         }
1075                                         break;
1076                                 }
1077                         }
1078                         if (x >= AST_MAX_CONNECTS) {
1079                                 fdprint(s, "No more connections allowed\n");
1080                                 ast_log(LOG_WARNING, "No more connections allowed\n");
1081                                 close(s);
1082                         } else if (consoles[x].fd > -1)
1083                                 ast_verb(3, "Remote UNIX connection\n");
1084                 }
1085         }
1086         return NULL;
1087 }
1088
1089 static int ast_makesocket(void)
1090 {
1091         struct sockaddr_un sunaddr;
1092         int res;
1093         int x;
1094         uid_t uid = -1;
1095         gid_t gid = -1;
1096
1097         for (x = 0; x < AST_MAX_CONNECTS; x++)
1098                 consoles[x].fd = -1;
1099         unlink(ast_config_AST_SOCKET);
1100         ast_socket = socket(PF_LOCAL, SOCK_STREAM, 0);
1101         if (ast_socket < 0) {
1102                 ast_log(LOG_WARNING, "Unable to create control socket: %s\n", strerror(errno));
1103                 return -1;
1104         }
1105         memset(&sunaddr, 0, sizeof(sunaddr));
1106         sunaddr.sun_family = AF_LOCAL;
1107         ast_copy_string(sunaddr.sun_path, ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
1108         res = bind(ast_socket, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
1109         if (res) {
1110                 ast_log(LOG_WARNING, "Unable to bind socket to %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1111                 close(ast_socket);
1112                 ast_socket = -1;
1113                 return -1;
1114         }
1115         res = listen(ast_socket, 2);
1116         if (res < 0) {
1117                 ast_log(LOG_WARNING, "Unable to listen on socket %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1118                 close(ast_socket);
1119                 ast_socket = -1;
1120                 return -1;
1121         }
1122         ast_register_verbose(network_verboser);
1123         ast_pthread_create_background(&lthread, NULL, listener, NULL);
1124
1125         if (!ast_strlen_zero(ast_config_AST_CTL_OWNER)) {
1126                 struct passwd *pw;
1127                 if ((pw = getpwnam(ast_config_AST_CTL_OWNER)) == NULL)
1128                         ast_log(LOG_WARNING, "Unable to find uid of user %s\n", ast_config_AST_CTL_OWNER);
1129                 else
1130                         uid = pw->pw_uid;
1131         }
1132
1133         if (!ast_strlen_zero(ast_config_AST_CTL_GROUP)) {
1134                 struct group *grp;
1135                 if ((grp = getgrnam(ast_config_AST_CTL_GROUP)) == NULL)
1136                         ast_log(LOG_WARNING, "Unable to find gid of group %s\n", ast_config_AST_CTL_GROUP);
1137                 else
1138                         gid = grp->gr_gid;
1139         }
1140
1141         if (chown(ast_config_AST_SOCKET, uid, gid) < 0)
1142                 ast_log(LOG_WARNING, "Unable to change ownership of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1143
1144         if (!ast_strlen_zero(ast_config_AST_CTL_PERMISSIONS)) {
1145                 int p1;
1146                 mode_t p;
1147                 sscanf(ast_config_AST_CTL_PERMISSIONS, "%o", &p1);
1148                 p = p1;
1149                 if ((chmod(ast_config_AST_SOCKET, p)) < 0)
1150                         ast_log(LOG_WARNING, "Unable to change file permissions of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1151         }
1152
1153         return 0;
1154 }
1155
1156 static int ast_tryconnect(void)
1157 {
1158         struct sockaddr_un sunaddr;
1159         int res;
1160         ast_consock = socket(PF_LOCAL, SOCK_STREAM, 0);
1161         if (ast_consock < 0) {
1162                 ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
1163                 return 0;
1164         }
1165         memset(&sunaddr, 0, sizeof(sunaddr));
1166         sunaddr.sun_family = AF_LOCAL;
1167         ast_copy_string(sunaddr.sun_path, ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
1168         res = connect(ast_consock, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
1169         if (res) {
1170                 close(ast_consock);
1171                 ast_consock = -1;
1172                 return 0;
1173         } else
1174                 return 1;
1175 }
1176
1177 /*! \brief Urgent handler
1178
1179  Called by soft_hangup to interrupt the poll, read, or other
1180  system call.  We don't actually need to do anything though.
1181  Remember: Cannot EVER ast_log from within a signal handler
1182  */
1183 static void urg_handler(int num)
1184 {
1185         signal(num, urg_handler);
1186         return;
1187 }
1188
1189 static void hup_handler(int num)
1190 {
1191         int a = 0;
1192         if (option_verbose > 1)
1193                 printf("Received HUP signal -- Reloading configs\n");
1194         if (restartnow)
1195                 execvp(_argv[0], _argv);
1196         sig_flags.need_reload = 1;
1197         if (sig_alert_pipe[1] != -1)
1198                 write(sig_alert_pipe[1], &a, sizeof(a));
1199         signal(num, hup_handler);
1200 }
1201
1202 static void child_handler(int sig)
1203 {
1204         /* Must not ever ast_log or ast_verbose within signal handler */
1205         int n, status;
1206
1207         /*
1208          * Reap all dead children -- not just one
1209          */
1210         for (n = 0; wait4(-1, &status, WNOHANG, NULL) > 0; n++)
1211                 ;
1212         if (n == 0 && option_debug)
1213                 printf("Huh?  Child handler, but nobody there?\n");
1214         signal(sig, child_handler);
1215 }
1216
1217 /*! \brief Set maximum open files */
1218 static void set_ulimit(int value)
1219 {
1220         struct rlimit l = {0, 0};
1221
1222         if (value <= 0) {
1223                 ast_log(LOG_WARNING, "Unable to change max files open to invalid value %i\n",value);
1224                 return;
1225         }
1226
1227         l.rlim_cur = value;
1228         l.rlim_max = value;
1229
1230         if (setrlimit(RLIMIT_NOFILE, &l)) {
1231                 ast_log(LOG_WARNING, "Unable to disable core size resource limit: %s\n",strerror(errno));
1232                 return;
1233         }
1234
1235         ast_log(LOG_NOTICE, "Setting max files open to %d\n",value);
1236
1237         return;
1238 }
1239
1240 /*! \brief Set an X-term or screen title */
1241 static void set_title(char *text)
1242 {
1243         if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
1244                 fprintf(stdout, "\033]2;%s\007", text);
1245 }
1246
1247 static void set_icon(char *text)
1248 {
1249         if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
1250                 fprintf(stdout, "\033]1;%s\007", text);
1251 }
1252
1253 /*! \brief We set ourselves to a high priority, that we might pre-empt everything
1254    else.  If your PBX has heavy activity on it, this is a good thing.  */
1255 int ast_set_priority(int pri)
1256 {
1257         struct sched_param sched;
1258         memset(&sched, 0, sizeof(sched));
1259 #ifdef __linux__
1260         if (pri) {
1261                 sched.sched_priority = 10;
1262                 if (sched_setscheduler(0, SCHED_RR, &sched)) {
1263                         ast_log(LOG_WARNING, "Unable to set high priority\n");
1264                         return -1;
1265                 } else
1266                         if (option_verbose)
1267                                 ast_verbose("Set to realtime thread\n");
1268         } else {
1269                 sched.sched_priority = 0;
1270                 /* According to the manpage, these parameters can never fail. */
1271                 sched_setscheduler(0, SCHED_OTHER, &sched);
1272         }
1273 #else
1274         if (pri) {
1275                 if (setpriority(PRIO_PROCESS, 0, -10) == -1) {
1276                         ast_log(LOG_WARNING, "Unable to set high priority\n");
1277                         return -1;
1278                 } else
1279                         if (option_verbose)
1280                                 ast_verbose("Set to high priority\n");
1281         } else {
1282                 /* According to the manpage, these parameters can never fail. */
1283                 setpriority(PRIO_PROCESS, 0, 0);
1284         }
1285 #endif
1286         return 0;
1287 }
1288
1289 static void ast_run_atexits(void)
1290 {
1291         struct ast_atexit *ae;
1292         AST_RWLIST_RDLOCK(&atexits);
1293         AST_RWLIST_TRAVERSE(&atexits, ae, list) {
1294                 if (ae->func)
1295                         ae->func();
1296         }
1297         AST_RWLIST_UNLOCK(&atexits);
1298 }
1299
1300 static void quit_handler(int num, int nice, int safeshutdown, int restart)
1301 {
1302         char filename[80] = "";
1303         time_t s,e;
1304         int x;
1305         /* Try to get as many CDRs as possible submitted to the backend engines (if in batch mode) */
1306         ast_cdr_engine_term();
1307         if (safeshutdown) {
1308                 shuttingdown = 1;
1309                 if (!nice) {
1310                         /* Begin shutdown routine, hanging up active channels */
1311                         ast_begin_shutdown(1);
1312                         if (option_verbose && ast_opt_console)
1313                                 ast_verbose("Beginning asterisk %s....\n", restart ? "restart" : "shutdown");
1314                         time(&s);
1315                         for (;;) {
1316                                 time(&e);
1317                                 /* Wait up to 15 seconds for all channels to go away */
1318                                 if ((e - s) > 15)
1319                                         break;
1320                                 if (!ast_active_channels())
1321                                         break;
1322                                 if (!shuttingdown)
1323                                         break;
1324                                 /* Sleep 1/10 of a second */
1325                                 usleep(100000);
1326                         }
1327                 } else {
1328                         if (nice < 2)
1329                                 ast_begin_shutdown(0);
1330                         if (option_verbose && ast_opt_console)
1331                                 ast_verbose("Waiting for inactivity to perform %s...\n", restart ? "restart" : "halt");
1332                         for (;;) {
1333                                 if (!ast_active_channels())
1334                                         break;
1335                                 if (!shuttingdown)
1336                                         break;
1337                                 sleep(1);
1338                         }
1339                 }
1340
1341                 if (!shuttingdown) {
1342                         if (option_verbose && ast_opt_console)
1343                                 ast_verbose("Asterisk %s cancelled.\n", restart ? "restart" : "shutdown");
1344                         return;
1345                 }
1346
1347                 if (nice)
1348                         ast_module_shutdown();
1349         }
1350         if (ast_opt_console || ast_opt_remote) {
1351                 if (getenv("HOME"))
1352                         snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
1353                 if (!ast_strlen_zero(filename))
1354                         ast_el_write_history(filename);
1355                 if (el != NULL)
1356                         el_end(el);
1357                 if (el_hist != NULL)
1358                         history_end(el_hist);
1359         }
1360         if (option_verbose)
1361                 ast_verbose("Executing last minute cleanups\n");
1362         ast_run_atexits();
1363         /* Called on exit */
1364         if (option_verbose && ast_opt_console)
1365                 ast_verbose("Asterisk %s ending (%d).\n", ast_active_channels() ? "uncleanly" : "cleanly", num);
1366         ast_debug(1, "Asterisk ending (%d).\n", num);
1367         manager_event(EVENT_FLAG_SYSTEM, "Shutdown", "Shutdown: %s\r\nRestart: %s\r\n", ast_active_channels() ? "Uncleanly" : "Cleanly", restart ? "True" : "False");
1368         if (ast_socket > -1) {
1369                 pthread_cancel(lthread);
1370                 close(ast_socket);
1371                 ast_socket = -1;
1372                 unlink(ast_config_AST_SOCKET);
1373         }
1374         if (ast_consock > -1)
1375                 close(ast_consock);
1376         if (!ast_opt_remote)
1377                 unlink(ast_config_AST_PID);
1378         printf(term_quit());
1379         if (restart) {
1380                 if (option_verbose || ast_opt_console)
1381                         ast_verbose("Preparing for Asterisk restart...\n");
1382                 /* Mark all FD's for closing on exec */
1383                 for (x=3; x < 32768; x++) {
1384                         fcntl(x, F_SETFD, FD_CLOEXEC);
1385                 }
1386                 if (option_verbose || ast_opt_console)
1387                         ast_verbose("Asterisk is now restarting...\n");
1388                 restartnow = 1;
1389
1390                 /* close logger */
1391                 close_logger();
1392
1393                 /* If there is a consolethread running send it a SIGHUP
1394                    so it can execvp, otherwise we can do it ourselves */
1395                 if ((consolethread != AST_PTHREADT_NULL) && (consolethread != pthread_self())) {
1396                         pthread_kill(consolethread, SIGHUP);
1397                         /* Give the signal handler some time to complete */
1398                         sleep(2);
1399                 } else
1400                         execvp(_argv[0], _argv);
1401
1402         } else {
1403                 /* close logger */
1404                 close_logger();
1405         }
1406         exit(0);
1407 }
1408
1409 static void __quit_handler(int num)
1410 {
1411         int a = 0;
1412         sig_flags.need_quit = 1;
1413         if (sig_alert_pipe[1] != -1)
1414                 write(sig_alert_pipe[1], &a, sizeof(a));
1415         /* There is no need to restore the signal handler here, since the app
1416          * is going to exit */
1417 }
1418
1419 static const char *fix_header(char *outbuf, int maxout, const char *s, char *cmp)
1420 {
1421         const char *c;
1422         if (!strncmp(s, cmp, strlen(cmp))) {
1423                 c = s + strlen(cmp);
1424                 term_color(outbuf, cmp, COLOR_GRAY, 0, maxout);
1425                 return c;
1426         }
1427         return NULL;
1428 }
1429
1430 static void console_verboser(const char *s)
1431 {
1432         char tmp[80];
1433         const char *c = NULL;
1434
1435         if ((c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_4)) ||
1436             (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_3)) ||
1437             (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_2)) ||
1438             (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_1))) {
1439                 fputs(tmp, stdout);
1440                 fputs(c, stdout);
1441         } else
1442                 fputs(s, stdout);
1443
1444         fflush(stdout);
1445
1446         /* Wake up a poll()ing console */
1447         if (ast_opt_console && consolethread != AST_PTHREADT_NULL)
1448                 pthread_kill(consolethread, SIGURG);
1449 }
1450
1451 static int ast_all_zeros(char *s)
1452 {
1453         while (*s) {
1454                 if (*s > 32)
1455                         return 0;
1456                 s++;
1457         }
1458         return 1;
1459 }
1460
1461 static void consolehandler(char *s)
1462 {
1463         printf(term_end());
1464         fflush(stdout);
1465
1466         /* Called when readline data is available */
1467         if (!ast_all_zeros(s))
1468                 ast_el_add_history(s);
1469         /* The real handler for bang */
1470         if (s[0] == '!') {
1471                 if (s[1])
1472                         ast_safe_system(s+1);
1473                 else
1474                         ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
1475         } else
1476                 ast_cli_command(STDOUT_FILENO, s);
1477 }
1478
1479 static int remoteconsolehandler(char *s)
1480 {
1481         int ret = 0;
1482
1483         /* Called when readline data is available */
1484         if (!ast_all_zeros(s))
1485                 ast_el_add_history(s);
1486         /* The real handler for bang */
1487         if (s[0] == '!') {
1488                 if (s[1])
1489                         ast_safe_system(s+1);
1490                 else
1491                         ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
1492                 ret = 1;
1493         }
1494         if ((strncasecmp(s, "quit", 4) == 0 || strncasecmp(s, "exit", 4) == 0) &&
1495             (s[4] == '\0' || isspace(s[4]))) {
1496                 quit_handler(0, 0, 0, 0);
1497                 ret = 1;
1498         }
1499
1500         return ret;
1501 }
1502
1503 static char *handle_version(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1504 {
1505         switch (cmd) {
1506         case CLI_INIT:
1507                 e->command = "core show version";
1508                 e->usage =
1509                         "Usage: core show version\n"
1510                         "       Shows Asterisk version information.\n";
1511                 return NULL;
1512         case CLI_GENERATE:
1513                 return NULL;
1514         }
1515
1516         if (a->argc != 3)
1517                 return CLI_SHOWUSAGE;
1518         ast_cli(a->fd, "Asterisk %s built by %s @ %s on a %s running %s on %s\n",
1519                 ast_get_version(), ast_build_user, ast_build_hostname,
1520                 ast_build_machine, ast_build_os, ast_build_date);
1521         return CLI_SUCCESS;
1522 }
1523
1524 #if 0
1525 static int handle_quit(int fd, int argc, char *argv[])
1526 {
1527         if (argc != 1)
1528                 return RESULT_SHOWUSAGE;
1529         quit_handler(0, 0, 1, 0);
1530         return RESULT_SUCCESS;
1531 }
1532 #endif
1533
1534 static char *handle_stop_now(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1535 {
1536         switch (cmd) {
1537         case CLI_INIT:
1538                 e->command = "core stop now";
1539                 e->usage =
1540                         "Usage: core stop now\n"
1541                         "       Shuts down a running Asterisk immediately, hanging up all active calls .\n";
1542                 return NULL;
1543         case CLI_GENERATE:
1544                 return NULL;
1545         }
1546
1547         if (a->argc != e->args)
1548                 return CLI_SHOWUSAGE;
1549         quit_handler(0, 0 /* Not nice */, 1 /* safely */, 0 /* not restart */);
1550         return CLI_SUCCESS;
1551 }
1552
1553 static char *handle_stop_now_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1554 {
1555         char *res = handle_stop_now(e, cmd, a);
1556         if (cmd == CLI_INIT)
1557                 e->command = "stop now";
1558         return res;
1559 }
1560
1561 static char *handle_stop_gracefully(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1562 {
1563         switch (cmd) {
1564         case CLI_INIT:
1565                 e->command = "core stop gracefully";
1566                 e->usage =
1567                         "Usage: core stop gracefully\n"
1568                         "       Causes Asterisk to not accept new calls, and exit when all\n"
1569                         "       active calls have terminated normally.\n";
1570                 return NULL;
1571         case CLI_GENERATE:
1572                 return NULL;
1573         }
1574
1575         if (a->argc != e->args)
1576                 return CLI_SHOWUSAGE;
1577         quit_handler(0, 1 /* nicely */, 1 /* safely */, 0 /* no restart */);
1578         return CLI_SUCCESS;
1579 }
1580
1581 static char *handle_stop_gracefully_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1582 {
1583         char *res = handle_stop_gracefully(e, cmd, a);
1584         if (cmd == CLI_INIT)
1585                 e->command = "stop gracefully";
1586         return res;
1587 }
1588
1589 static char *handle_stop_when_convenient(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1590 {
1591         switch (cmd) {
1592         case CLI_INIT:
1593                 e->command = "core stop when convenient";
1594                 e->usage =
1595                         "Usage: core stop when convenient\n"
1596                         "       Causes Asterisk to perform a shutdown when all active calls have ended.\n";
1597                 return NULL;
1598         case CLI_GENERATE:
1599                 return NULL;
1600         }
1601
1602         if (a->argc != e->args)
1603                 return CLI_SHOWUSAGE;
1604         ast_cli(a->fd, "Waiting for inactivity to perform halt\n");
1605         quit_handler(0, 2 /* really nicely */, 1 /* safely */, 0 /* don't restart */);
1606         return CLI_SUCCESS;
1607 }
1608
1609 static char *handle_stop_when_convenient_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1610 {
1611         char *res = handle_stop_when_convenient(e, cmd, a);
1612         if (cmd == CLI_INIT)
1613                 e->command = "stop when convenient";
1614         return res;
1615 }
1616
1617 static char *handle_restart_now(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1618 {
1619         switch (cmd) {
1620         case CLI_INIT:
1621                 e->command = "core restart now";
1622                 e->usage =
1623                         "Usage: core restart now\n"
1624                         "       Causes Asterisk to hangup all calls and exec() itself performing a cold\n"
1625                         "       restart.\n";
1626                 return NULL;
1627         case CLI_GENERATE:
1628                 return NULL;
1629         }
1630
1631         if (a->argc != e->args)
1632                 return CLI_SHOWUSAGE;
1633         quit_handler(0, 0 /* not nicely */, 1 /* safely */, 1 /* restart */);
1634         return CLI_SUCCESS;
1635 }
1636
1637 static char *handle_restart_now_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1638 {
1639         char *res = handle_restart_now(e, cmd, a);
1640         if (cmd == CLI_INIT)
1641                 e->command = "restart now";
1642         return res;
1643 }
1644
1645 static char *handle_restart_gracefully(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1646 {
1647         switch (cmd) {
1648         case CLI_INIT:
1649                 e->command = "core restart gracefully";
1650                 e->usage =
1651                         "Usage: core restart gracefully\n"
1652                         "       Causes Asterisk to stop accepting new calls and exec() itself performing a cold\n"
1653                         "       restart when all active calls have ended.\n";
1654                 return NULL;
1655         case CLI_GENERATE:
1656                 return NULL;
1657         }
1658
1659         if (a->argc != e->args)
1660                 return CLI_SHOWUSAGE;
1661         quit_handler(0, 1 /* nicely */, 1 /* safely */, 1 /* restart */);
1662         return CLI_SUCCESS;
1663 }
1664
1665 static char *handle_restart_gracefully_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1666 {
1667         char *res = handle_restart_gracefully(e, cmd, a);
1668         if (cmd == CLI_INIT)
1669                 e->command = "restart gracefully";
1670         return res;
1671 }
1672
1673 static char *handle_restart_when_convenient(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1674 {
1675         switch (cmd) {
1676         case CLI_INIT:
1677                 e->command = "core restart when convenient";
1678                 e->usage =
1679                         "Usage: core restart when convenient\n"
1680                         "       Causes Asterisk to perform a cold restart when all active calls have ended.\n";
1681                 return NULL;
1682         case CLI_GENERATE:
1683                 return NULL;
1684         }
1685
1686         if (a->argc != e->args)
1687                 return CLI_SHOWUSAGE;
1688         ast_cli(a->fd, "Waiting for inactivity to perform restart\n");
1689         quit_handler(0, 2 /* really nicely */, 1 /* safely */, 1 /* restart */);
1690         return CLI_SUCCESS;
1691 }
1692
1693 static char *handle_restart_when_convenient_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1694 {
1695         char *res = handle_restart_when_convenient(e, cmd, a);
1696         if (cmd == CLI_INIT)
1697                 e->command = "restart when convenient";
1698         return res;
1699 }
1700
1701 static char *handle_abort_shutdown(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1702 {
1703         switch (cmd) {
1704         case CLI_INIT:
1705                 e->command = "core abort shutdown";
1706                 e->usage =
1707                         "Usage: core abort shutdown\n"
1708                         "       Causes Asterisk to abort an executing shutdown or restart, and resume normal\n"
1709                         "       call operations.\n";
1710                 return NULL;
1711         case CLI_GENERATE:
1712                 return NULL;
1713         }
1714
1715         if (a->argc != e->args)
1716                 return CLI_SHOWUSAGE;
1717         ast_cancel_shutdown();
1718         shuttingdown = 0;
1719         return CLI_SUCCESS;
1720 }
1721
1722 static char *handle_abort_shutdown_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1723 {
1724         char *res = handle_abort_shutdown(e, cmd, a);
1725         if (cmd == CLI_INIT)
1726                 e->command = "abort shutdown";
1727         return res;
1728 }
1729
1730 static char *handle_bang(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1731 {
1732         switch (cmd) {
1733         case CLI_INIT:
1734                 e->command = "!";
1735                 e->usage =
1736                         "Usage: !<command>\n"
1737                         "       Executes a given shell command\n";
1738                 return NULL;
1739         case CLI_GENERATE:
1740                 return NULL;
1741         }
1742
1743         return CLI_SUCCESS;
1744 }
1745 static const char warranty_lines[] = {
1746         "\n"
1747         "                           NO WARRANTY\n"
1748         "\n"
1749         "BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY\n"
1750         "FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN\n"
1751         "OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES\n"
1752         "PROVIDE THE PROGRAM \"AS IS\" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED\n"
1753         "OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\n"
1754         "MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS\n"
1755         "TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE\n"
1756         "PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,\n"
1757         "REPAIR OR CORRECTION.\n"
1758         "\n"
1759         "IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING\n"
1760         "WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR\n"
1761         "REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,\n"
1762         "INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING\n"
1763         "OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED\n"
1764         "TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY\n"
1765         "YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER\n"
1766         "PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE\n"
1767         "POSSIBILITY OF SUCH DAMAGES.\n"
1768 };
1769
1770 static char *show_warranty(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1771 {
1772         switch (cmd) {
1773         case CLI_INIT:
1774                 e->command = "core show warranty";
1775                 e->usage =
1776                         "Usage: core show warranty\n"
1777                         "       Shows the warranty (if any) for this copy of Asterisk.\n";
1778                 return NULL;
1779         case CLI_GENERATE:
1780                 return NULL;
1781         }
1782
1783         ast_cli(a->fd, warranty_lines);
1784
1785         return CLI_SUCCESS;
1786 }
1787
1788 static const char license_lines[] = {
1789         "\n"
1790         "This program is free software; you can redistribute it and/or modify\n"
1791         "it under the terms of the GNU General Public License version 2 as\n"
1792         "published by the Free Software Foundation.\n"
1793         "\n"
1794         "This program also contains components licensed under other licenses.\n"
1795         "They include:\n"
1796         "\n"
1797         "This program is distributed in the hope that it will be useful,\n"
1798         "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1799         "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
1800         "GNU General Public License for more details.\n"
1801         "\n"
1802         "You should have received a copy of the GNU General Public License\n"
1803         "along with this program; if not, write to the Free Software\n"
1804         "Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\n"
1805 };
1806
1807 static char *show_license(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1808 {
1809         switch (cmd) {
1810         case CLI_INIT:
1811                 e->command = "core show license";
1812                 e->usage =
1813                         "Usage: core show license\n"
1814                         "       Shows the license(s) for this copy of Asterisk.\n";
1815                 return NULL;
1816         case CLI_GENERATE:
1817                 return NULL;
1818         }
1819
1820         ast_cli(a->fd, license_lines);
1821
1822         return CLI_SUCCESS;
1823 }
1824
1825 #define ASTERISK_PROMPT "*CLI> "
1826
1827 #define ASTERISK_PROMPT2 "%s*CLI> "
1828
1829 /* deprecated cli entries */
1830 static struct ast_cli_entry cli_abort_shutdown_deprecated = AST_CLI_DEFINE(handle_abort_shutdown_deprecated, "Cancel a running shutdown.");
1831 static struct ast_cli_entry cli_stop_now_deprecated = AST_CLI_DEFINE(handle_stop_now_deprecated, "Shut down Asterisk immediately.");
1832 static struct ast_cli_entry cli_stop_gracefully_deprecated = AST_CLI_DEFINE(handle_stop_gracefully_deprecated, "Gracefully shut down Asterisk.");
1833 static struct ast_cli_entry cli_stop_when_convenient_deprecated = AST_CLI_DEFINE(handle_stop_when_convenient_deprecated, "Shut down Asterisk at empty call volume.");
1834 static struct ast_cli_entry cli_restart_now_deprecated = AST_CLI_DEFINE(handle_restart_now_deprecated, "Restart Asterisk immediately.");
1835 static struct ast_cli_entry cli_restart_gracefully_deprecated = AST_CLI_DEFINE(handle_restart_gracefully_deprecated, "Restart Asterisk gracefully.");
1836 static struct ast_cli_entry cli_restart_when_convenient_deprecated = AST_CLI_DEFINE(handle_restart_when_convenient_deprecated, "Restart Asterisk at empty call volume.");
1837 /* end deprecated cli entries */
1838
1839 static struct ast_cli_entry cli_asterisk[] = {
1840         AST_CLI_DEFINE(handle_abort_shutdown, "Cancel a running shutdown", .deprecate_cmd = &cli_abort_shutdown_deprecated),
1841         AST_CLI_DEFINE(handle_stop_now, "Shut down Asterisk immediately", .deprecate_cmd = &cli_stop_now_deprecated),
1842         AST_CLI_DEFINE(handle_stop_gracefully, "Gracefully shut down Asterisk", .deprecate_cmd = &cli_stop_gracefully_deprecated),
1843         AST_CLI_DEFINE(handle_stop_when_convenient, "Shut down Asterisk at empty call volume", .deprecate_cmd = &cli_stop_when_convenient_deprecated),
1844         AST_CLI_DEFINE(handle_restart_now, "Restart Asterisk immediately", .deprecate_cmd = &cli_restart_now_deprecated),
1845         AST_CLI_DEFINE(handle_restart_gracefully, "Restart Asterisk gracefully", .deprecate_cmd = &cli_restart_gracefully_deprecated),
1846         AST_CLI_DEFINE(handle_restart_when_convenient, "Restart Asterisk at empty call volume", .deprecate_cmd = &cli_restart_when_convenient_deprecated),
1847         AST_CLI_DEFINE(show_warranty, "Show the warranty (if any) for this copy of Asterisk"),
1848         AST_CLI_DEFINE(show_license, "Show the license(s) for this copy of Asterisk"),
1849         AST_CLI_DEFINE(handle_version, "Display version info"),
1850         AST_CLI_DEFINE(handle_bang, "Execute a shell command"),
1851 #if !defined(LOW_MEMORY)
1852         AST_CLI_DEFINE(handle_show_version_files, "List versions of files used to build Asterisk"),
1853         AST_CLI_DEFINE(handle_show_threads, "Show running threads"),
1854 #if defined(HAVE_SYSINFO)
1855         AST_CLI_DEFINE(handle_show_sysinfo, "Show System Information"),
1856 #endif
1857         AST_CLI_DEFINE(handle_show_profile, "Display profiling info"),
1858         AST_CLI_DEFINE(handle_show_settings, "Show some core settings"),
1859         AST_CLI_DEFINE(handle_clear_profile, "Clear profiling info"),
1860 #endif /* ! LOW_MEMORY */
1861 };
1862
1863 static int ast_el_read_char(EditLine *el, char *cp)
1864 {
1865         int num_read = 0;
1866         int lastpos = 0;
1867         struct pollfd fds[2];
1868         int res;
1869         int max;
1870 #define EL_BUF_SIZE 512
1871         char buf[EL_BUF_SIZE];
1872
1873         for (;;) {
1874                 max = 1;
1875                 fds[0].fd = ast_consock;
1876                 fds[0].events = POLLIN;
1877                 if (!ast_opt_exec) {
1878                         fds[1].fd = STDIN_FILENO;
1879                         fds[1].events = POLLIN;
1880                         max++;
1881                 }
1882                 res = poll(fds, max, -1);
1883                 if (res < 0) {
1884                         if (errno == EINTR)
1885                                 continue;
1886                         ast_log(LOG_ERROR, "poll failed: %s\n", strerror(errno));
1887                         break;
1888                 }
1889
1890                 if (!ast_opt_exec && fds[1].revents) {
1891                         num_read = read(STDIN_FILENO, cp, 1);
1892                         if (num_read < 1) {
1893                                 break;
1894                         } else
1895                                 return (num_read);
1896                 }
1897                 if (fds[0].revents) {
1898                         res = read(ast_consock, buf, sizeof(buf) - 1);
1899                         /* if the remote side disappears exit */
1900                         if (res < 1) {
1901                                 fprintf(stderr, "\nDisconnected from Asterisk server\n");
1902                                 if (!ast_opt_reconnect) {
1903                                         quit_handler(0, 0, 0, 0);
1904                                 } else {
1905                                         int tries;
1906                                         int reconnects_per_second = 20;
1907                                         fprintf(stderr, "Attempting to reconnect for 30 seconds\n");
1908                                         for (tries = 0; tries < 30 * reconnects_per_second; tries++) {
1909                                                 if (ast_tryconnect()) {
1910                                                         fprintf(stderr, "Reconnect succeeded after %.3f seconds\n", 1.0 / reconnects_per_second * tries);
1911                                                         printf(term_quit());
1912                                                         WELCOME_MESSAGE;
1913                                                         if (!ast_opt_mute)
1914                                                                 fdprint(ast_consock, "logger mute silent");
1915                                                         else
1916                                                                 printf("log and verbose output currently muted ('logger mute' to unmute)\n");
1917                                                         break;
1918                                                 } else
1919                                                         usleep(1000000 / reconnects_per_second);
1920                                         }
1921                                         if (tries >= 30 * reconnects_per_second) {
1922                                                 fprintf(stderr, "Failed to reconnect for 30 seconds.  Quitting.\n");
1923                                                 quit_handler(0, 0, 0, 0);
1924                                         }
1925                                 }
1926                         }
1927
1928                         buf[res] = '\0';
1929
1930                         if (!ast_opt_exec && !lastpos)
1931                                 write(STDOUT_FILENO, "\r", 1);
1932                         write(STDOUT_FILENO, buf, res);
1933                         if ((res < EL_BUF_SIZE - 1) && ((buf[res-1] == '\n') || (buf[res-2] == '\n'))) {
1934                                 *cp = CC_REFRESH;
1935                                 return(1);
1936                         } else
1937                                 lastpos = 1;
1938                 }
1939         }
1940
1941         *cp = '\0';
1942         return (0);
1943 }
1944
1945 static char *cli_prompt(EditLine *el)
1946 {
1947         static char prompt[200];
1948         char *pfmt;
1949         int color_used = 0;
1950         char term_code[20];
1951
1952         if ((pfmt = getenv("ASTERISK_PROMPT"))) {
1953                 char *t = pfmt, *p = prompt;
1954                 memset(prompt, 0, sizeof(prompt));
1955                 while (*t != '\0' && *p < sizeof(prompt)) {
1956                         if (*t == '%') {
1957                                 char hostname[MAXHOSTNAMELEN]="";
1958                                 int i;
1959                                 struct timeval ts = ast_tvnow();
1960                                 struct ast_tm tm = { 0, };
1961 #ifdef linux
1962                                 FILE *LOADAVG;
1963 #endif
1964                                 int fgcolor = COLOR_WHITE, bgcolor = COLOR_BLACK;
1965
1966                                 t++;
1967                                 switch (*t) {
1968                                 case 'C': /* color */
1969                                         t++;
1970                                         if (sscanf(t, "%d;%d%n", &fgcolor, &bgcolor, &i) == 2) {
1971                                                 strncat(p, term_color_code(term_code, fgcolor, bgcolor, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
1972                                                 t += i - 1;
1973                                         } else if (sscanf(t, "%d%n", &fgcolor, &i) == 1) {
1974                                                 strncat(p, term_color_code(term_code, fgcolor, 0, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
1975                                                 t += i - 1;
1976                                         }
1977
1978                                         /* If the color has been reset correctly, then there's no need to reset it later */
1979                                         color_used = ((fgcolor == COLOR_WHITE) && (bgcolor == COLOR_BLACK)) ? 0 : 1;
1980                                         break;
1981                                 case 'd': /* date */
1982                                         if (ast_localtime(&ts, &tm, NULL))
1983                                                 ast_strftime(p, sizeof(prompt) - strlen(prompt), "%Y-%m-%d", &tm);
1984                                         break;
1985                                 case 'h': /* hostname */
1986                                         if (!gethostname(hostname, sizeof(hostname) - 1))
1987                                                 strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
1988                                         else
1989                                                 strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
1990                                         break;
1991                                 case 'H': /* short hostname */
1992                                         if (!gethostname(hostname, sizeof(hostname) - 1)) {
1993                                                 for (i = 0; i < sizeof(hostname); i++) {
1994                                                         if (hostname[i] == '.') {
1995                                                                 hostname[i] = '\0';
1996                                                                 break;
1997                                                         }
1998                                                 }
1999                                                 strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
2000                                         } else
2001                                                 strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
2002                                         break;
2003 #ifdef linux
2004                                 case 'l': /* load avg */
2005                                         t++;
2006                                         if ((LOADAVG = fopen("/proc/loadavg", "r"))) {
2007                                                 float avg1, avg2, avg3;
2008                                                 int actproc, totproc, npid, which;
2009                                                 fscanf(LOADAVG, "%f %f %f %d/%d %d",
2010                                                         &avg1, &avg2, &avg3, &actproc, &totproc, &npid);
2011                                                 if (sscanf(t, "%d", &which) == 1) {
2012                                                         switch (which) {
2013                                                         case 1:
2014                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg1);
2015                                                                 break;
2016                                                         case 2:
2017                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg2);
2018                                                                 break;
2019                                                         case 3:
2020                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg3);
2021                                                                 break;
2022                                                         case 4:
2023                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%d/%d", actproc, totproc);
2024                                                                 break;
2025                                                         case 5:
2026                                                                 snprintf(p, sizeof(prompt) - strlen(prompt), "%d", npid);
2027                                                                 break;
2028                                                         }
2029                                                 }
2030                                         }
2031                                         break;
2032 #endif
2033                                 case 's': /* Asterisk system name (from asterisk.conf) */
2034                                         strncat(p, ast_config_AST_SYSTEM_NAME, sizeof(prompt) - strlen(prompt) - 1);
2035                                         break;
2036                                 case 't': /* time */
2037                                         if (ast_localtime(&ts, &tm, NULL))
2038                                                 ast_strftime(p, sizeof(prompt) - strlen(prompt), "%H:%M:%S", &tm);
2039                                         break;
2040                                 case '#': /* process console or remote? */
2041                                         if (!ast_opt_remote)
2042                                                 strncat(p, "#", sizeof(prompt) - strlen(prompt) - 1);
2043                                         else
2044                                                 strncat(p, ">", sizeof(prompt) - strlen(prompt) - 1);
2045                                         break;
2046                                 case '%': /* literal % */
2047                                         strncat(p, "%", sizeof(prompt) - strlen(prompt) - 1);
2048                                         break;
2049                                 case '\0': /* % is last character - prevent bug */
2050                                         t--;
2051                                         break;
2052                                 }
2053                                 while (*p != '\0')
2054                                         p++;
2055                                 t++;
2056                         } else {
2057                                 *p = *t;
2058                                 p++;
2059                                 t++;
2060                         }
2061                 }
2062                 if (color_used) {
2063                         /* Force colors back to normal at end */
2064                         term_color_code(term_code, COLOR_WHITE, COLOR_BLACK, sizeof(term_code));
2065                         if (strlen(term_code) > sizeof(prompt) - strlen(prompt))
2066                                 strncat(prompt + sizeof(prompt) - strlen(term_code) - 1, term_code, strlen(term_code));
2067                         else
2068                                 strncat(p, term_code, sizeof(term_code));
2069                 }
2070         } else if (remotehostname)
2071                 snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT2, remotehostname);
2072         else
2073                 ast_copy_string(prompt, ASTERISK_PROMPT, sizeof(prompt));
2074
2075         return(prompt);
2076 }
2077
2078 static char **ast_el_strtoarr(char *buf)
2079 {
2080         char **match_list = NULL, **match_list_tmp, *retstr;
2081         size_t match_list_len;
2082         int matches = 0;
2083
2084         match_list_len = 1;
2085         while ( (retstr = strsep(&buf, " ")) != NULL) {
2086
2087                 if (!strcmp(retstr, AST_CLI_COMPLETE_EOF))
2088                         break;
2089                 if (matches + 1 >= match_list_len) {
2090                         match_list_len <<= 1;
2091                         if ((match_list_tmp = ast_realloc(match_list, match_list_len * sizeof(char *)))) {
2092                                 match_list = match_list_tmp;
2093                         } else {
2094                                 if (match_list)
2095                                         ast_free(match_list);
2096                                 return (char **) NULL;
2097                         }
2098                 }
2099
2100                 match_list[matches++] = ast_strdup(retstr);
2101         }
2102
2103         if (!match_list)
2104                 return (char **) NULL;
2105
2106         if (matches >= match_list_len) {
2107                 if ((match_list_tmp = ast_realloc(match_list, (match_list_len + 1) * sizeof(char *)))) {
2108                         match_list = match_list_tmp;
2109                 } else {
2110                         if (match_list)
2111                                 ast_free(match_list);
2112                         return (char **) NULL;
2113                 }
2114         }
2115
2116         match_list[matches] = (char *) NULL;
2117
2118         return match_list;
2119 }
2120
2121 static int ast_el_sort_compare(const void *i1, const void *i2)
2122 {
2123         char *s1, *s2;
2124
2125         s1 = ((char **)i1)[0];
2126         s2 = ((char **)i2)[0];
2127
2128         return strcasecmp(s1, s2);
2129 }
2130
2131 static int ast_cli_display_match_list(char **matches, int len, int max)
2132 {
2133         int i, idx, limit, count;
2134         int screenwidth = 0;
2135         int numoutput = 0, numoutputline = 0;
2136
2137         screenwidth = ast_get_termcols(STDOUT_FILENO);
2138
2139         /* find out how many entries can be put on one line, with two spaces between strings */
2140         limit = screenwidth / (max + 2);
2141         if (limit == 0)
2142                 limit = 1;
2143
2144         /* how many lines of output */
2145         count = len / limit;
2146         if (count * limit < len)
2147                 count++;
2148
2149         idx = 1;
2150
2151         qsort(&matches[0], (size_t)(len), sizeof(char *), ast_el_sort_compare);
2152
2153         for (; count > 0; count--) {
2154                 numoutputline = 0;
2155                 for (i = 0; i < limit && matches[idx]; i++, idx++) {
2156
2157                         /* Don't print dupes */
2158                         if ( (matches[idx+1] != NULL && strcmp(matches[idx], matches[idx+1]) == 0 ) ) {
2159                                 i--;
2160                                 ast_free(matches[idx]);
2161                                 matches[idx] = NULL;
2162                                 continue;
2163                         }
2164
2165                         numoutput++;
2166                         numoutputline++;
2167                         fprintf(stdout, "%-*s  ", max, matches[idx]);
2168                         ast_free(matches[idx]);
2169                         matches[idx] = NULL;
2170                 }
2171                 if (numoutputline > 0)
2172                         fprintf(stdout, "\n");
2173         }
2174
2175         return numoutput;
2176 }
2177
2178
2179 static char *cli_complete(EditLine *el, int ch)
2180 {
2181         int len = 0;
2182         char *ptr;
2183         int nummatches = 0;
2184         char **matches;
2185         int retval = CC_ERROR;
2186         char buf[2048];
2187         int res;
2188
2189         LineInfo *lf = (LineInfo *)el_line(el);
2190
2191         *(char *)lf->cursor = '\0';
2192         ptr = (char *)lf->cursor;
2193         if (ptr) {
2194                 while (ptr > lf->buffer) {
2195                         if (isspace(*ptr)) {
2196                                 ptr++;
2197                                 break;
2198                         }
2199                         ptr--;
2200                 }
2201         }
2202
2203         len = lf->cursor - ptr;
2204
2205         if (ast_opt_remote) {
2206                 snprintf(buf, sizeof(buf),"_COMMAND NUMMATCHES \"%s\" \"%s\"", lf->buffer, ptr);
2207                 fdprint(ast_consock, buf);
2208                 res = read(ast_consock, buf, sizeof(buf));
2209                 buf[res] = '\0';
2210                 nummatches = atoi(buf);
2211
2212                 if (nummatches > 0) {
2213                         char *mbuf;
2214                         int mlen = 0, maxmbuf = 2048;
2215                         /* Start with a 2048 byte buffer */
2216                         if (!(mbuf = ast_malloc(maxmbuf)))
2217                                 return (char *)(CC_ERROR);
2218                         snprintf(buf, sizeof(buf),"_COMMAND MATCHESARRAY \"%s\" \"%s\"", lf->buffer, ptr);
2219                         fdprint(ast_consock, buf);
2220                         res = 0;
2221                         mbuf[0] = '\0';
2222                         while (!strstr(mbuf, AST_CLI_COMPLETE_EOF) && res != -1) {
2223                                 if (mlen + 1024 > maxmbuf) {
2224                                         /* Every step increment buffer 1024 bytes */
2225                                         maxmbuf += 1024;
2226                                         if (!(mbuf = ast_realloc(mbuf, maxmbuf)))
2227                                                 return (char *)(CC_ERROR);
2228                                 }
2229                                 /* Only read 1024 bytes at a time */
2230                                 res = read(ast_consock, mbuf + mlen, 1024);
2231                                 if (res > 0)
2232                                         mlen += res;
2233                         }
2234                         mbuf[mlen] = '\0';
2235
2236                         matches = ast_el_strtoarr(mbuf);
2237                         ast_free(mbuf);
2238                 } else
2239                         matches = (char **) NULL;
2240         } else {
2241                 char **p, *oldbuf=NULL;
2242                 nummatches = 0;
2243                 matches = ast_cli_completion_matches((char *)lf->buffer,ptr);
2244                 for (p = matches; p && *p; p++) {
2245                         if (!oldbuf || strcmp(*p,oldbuf))
2246                                 nummatches++;
2247                         oldbuf = *p;
2248                 }
2249         }
2250
2251         if (matches) {
2252                 int i;
2253                 int matches_num, maxlen, match_len;
2254
2255                 if (matches[0][0] != '\0') {
2256                         el_deletestr(el, (int) len);
2257                         el_insertstr(el, matches[0]);
2258                         retval = CC_REFRESH;
2259                 }
2260
2261                 if (nummatches == 1) {
2262                         /* Found an exact match */
2263                         el_insertstr(el, " ");
2264                         retval = CC_REFRESH;
2265                 } else {
2266                         /* Must be more than one match */
2267                         for (i = 1, maxlen = 0; matches[i]; i++) {
2268                                 match_len = strlen(matches[i]);
2269                                 if (match_len > maxlen)
2270                                         maxlen = match_len;
2271                         }
2272                         matches_num = i - 1;
2273                         if (matches_num >1) {
2274                                 fprintf(stdout, "\n");
2275                                 ast_cli_display_match_list(matches, nummatches, maxlen);
2276                                 retval = CC_REDISPLAY;
2277                         } else {
2278                                 el_insertstr(el," ");
2279                                 retval = CC_REFRESH;
2280                         }
2281                 }
2282                 for (i = 0; matches[i]; i++)
2283                         ast_free(matches[i]);
2284                 ast_free(matches);
2285         }
2286
2287         return (char *)(long)retval;
2288 }
2289
2290 static int ast_el_initialize(void)
2291 {
2292         HistEvent ev;
2293         char *editor = getenv("AST_EDITOR");
2294
2295         if (el != NULL)
2296                 el_end(el);
2297         if (el_hist != NULL)
2298                 history_end(el_hist);
2299
2300         el = el_init("asterisk", stdin, stdout, stderr);
2301         el_set(el, EL_PROMPT, cli_prompt);
2302
2303         el_set(el, EL_EDITMODE, 1);
2304         el_set(el, EL_EDITOR, editor ? editor : "emacs");
2305         el_hist = history_init();
2306         if (!el || !el_hist)
2307                 return -1;
2308
2309         /* setup history with 100 entries */
2310         history(el_hist, &ev, H_SETSIZE, 100);
2311
2312         el_set(el, EL_HIST, history, el_hist);
2313
2314         el_set(el, EL_ADDFN, "ed-complete", "Complete argument", cli_complete);
2315         /* Bind <tab> to command completion */
2316         el_set(el, EL_BIND, "^I", "ed-complete", NULL);
2317         /* Bind ? to command completion */
2318         el_set(el, EL_BIND, "?", "ed-complete", NULL);
2319         /* Bind ^D to redisplay */
2320         el_set(el, EL_BIND, "^D", "ed-redisplay", NULL);
2321
2322         return 0;
2323 }
2324
2325 static int ast_el_add_history(char *buf)
2326 {
2327         HistEvent ev;
2328
2329         if (el_hist == NULL || el == NULL)
2330                 ast_el_initialize();
2331         if (strlen(buf) > 256)
2332                 return 0;
2333         return (history(el_hist, &ev, H_ENTER, buf));
2334 }
2335
2336 static int ast_el_write_history(char *filename)
2337 {
2338         HistEvent ev;
2339
2340         if (el_hist == NULL || el == NULL)
2341                 ast_el_initialize();
2342
2343         return (history(el_hist, &ev, H_SAVE, filename));
2344 }
2345
2346 static int ast_el_read_history(char *filename)
2347 {
2348         char buf[256];
2349         FILE *f;
2350         int ret = -1;
2351
2352         if (el_hist == NULL || el == NULL)
2353                 ast_el_initialize();
2354
2355         if ((f = fopen(filename, "r")) == NULL)
2356                 return ret;
2357
2358         while (!feof(f)) {
2359                 fgets(buf, sizeof(buf), f);
2360                 if (!strcmp(buf, "_HiStOrY_V2_\n"))
2361                         continue;
2362                 if (ast_all_zeros(buf))
2363                         continue;
2364                 if ((ret = ast_el_add_history(buf)) == -1)
2365                         break;
2366         }
2367         fclose(f);
2368
2369         return ret;
2370 }
2371
2372 static void ast_remotecontrol(char * data)
2373 {
2374         char buf[80];
2375         int res;
2376         char filename[80] = "";
2377         char *hostname;
2378         char *cpid;
2379         char *version;
2380         int pid;
2381         char tmp[80];
2382         char *stringp = NULL;
2383
2384         char *ebuf;
2385         int num = 0;
2386
2387         read(ast_consock, buf, sizeof(buf));
2388         if (data)
2389                 write(ast_consock, data, strlen(data) + 1);
2390         stringp = buf;
2391         hostname = strsep(&stringp, "/");
2392         cpid = strsep(&stringp, "/");
2393         version = strsep(&stringp, "\n");
2394         if (!version)
2395                 version = "<Version Unknown>";
2396         stringp = hostname;
2397         strsep(&stringp, ".");
2398         if (cpid)
2399                 pid = atoi(cpid);
2400         else
2401                 pid = -1;
2402         if (!data) {
2403                 snprintf(tmp, sizeof(tmp), "core set verbose atleast %d", option_verbose);
2404                 fdprint(ast_consock, tmp);
2405                 snprintf(tmp, sizeof(tmp), "core set debug atleast %d", option_debug);
2406                 fdprint(ast_consock, tmp);
2407                 if (!ast_opt_mute)
2408                         fdprint(ast_consock, "logger mute silent");
2409                 else
2410                         printf("log and verbose output currently muted ('logger mute' to unmute)\n");
2411         }
2412         ast_verbose("Connected to Asterisk %s currently running on %s (pid = %d)\n", version, hostname, pid);
2413         remotehostname = hostname;
2414         if (getenv("HOME"))
2415                 snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
2416         if (el_hist == NULL || el == NULL)
2417                 ast_el_initialize();
2418
2419         el_set(el, EL_GETCFN, ast_el_read_char);
2420
2421         if (!ast_strlen_zero(filename))
2422                 ast_el_read_history(filename);
2423
2424         if (ast_opt_exec && data) {  /* hack to print output then exit if asterisk -rx is used */
2425                 char tempchar;
2426                 struct pollfd fds;
2427                 fds.fd = ast_consock;
2428                 fds.events = POLLIN;
2429                 fds.revents = 0;
2430                 while (poll(&fds, 1, 100) > 0)
2431                         ast_el_read_char(el, &tempchar);
2432                 return;
2433         }
2434         for (;;) {
2435                 ebuf = (char *)el_gets(el, &num);
2436
2437                 if (!ebuf && write(1, "", 1) < 0)
2438                         break;
2439
2440                 if (!ast_strlen_zero(ebuf)) {
2441                         if (ebuf[strlen(ebuf)-1] == '\n')
2442                                 ebuf[strlen(ebuf)-1] = '\0';
2443                         if (!remoteconsolehandler(ebuf)) {
2444                                 res = write(ast_consock, ebuf, strlen(ebuf) + 1);
2445                                 if (res < 1) {
2446                                         ast_log(LOG_WARNING, "Unable to write: %s\n", strerror(errno));
2447                                         break;
2448                                 }
2449                         }
2450                 }
2451         }
2452         printf("\nDisconnected from Asterisk server\n");
2453 }
2454
2455 static int show_version(void)
2456 {
2457         printf("Asterisk %s\n", ast_get_version());
2458         return 0;
2459 }
2460
2461 static int show_cli_help(void) {
2462         printf("Asterisk %s, Copyright (C) 1999 - 2008, Digium, Inc. and others.\n", ast_get_version());
2463         printf("Usage: asterisk [OPTIONS]\n");
2464         printf("Valid Options:\n");
2465         printf("   -V              Display version number and exit\n");
2466         printf("   -C <configfile> Use an alternate configuration file\n");
2467         printf("   -G <group>      Run as a group other than the caller\n");
2468         printf("   -U <user>       Run as a user other than the caller\n");
2469         printf("   -c              Provide console CLI\n");
2470         printf("   -d              Enable extra debugging\n");
2471 #if HAVE_WORKING_FORK
2472         printf("   -f              Do not fork\n");
2473         printf("   -F              Always fork\n");
2474 #endif
2475         printf("   -g              Dump core in case of a crash\n");
2476         printf("   -h              This help screen\n");
2477         printf("   -i              Initialize crypto keys at startup\n");
2478         printf("   -I              Enable internal timing if Zaptel timer is available\n");
2479         printf("   -L <load>       Limit the maximum load average before rejecting new calls\n");
2480         printf("   -M <value>      Limit the maximum number of calls to the specified value\n");
2481         printf("   -m              Mute debugging and console output on the console\n");
2482         printf("   -n              Disable console colorization\n");
2483         printf("   -p              Run as pseudo-realtime thread\n");
2484         printf("   -q              Quiet mode (suppress output)\n");
2485         printf("   -r              Connect to Asterisk on this machine\n");
2486         printf("   -R              Same as -r, except attempt to reconnect if disconnected\n");
2487         printf("   -t              Record soundfiles in /var/tmp and move them where they\n");
2488         printf("                   belong after they are done\n");
2489         printf("   -T              Display the time in [Mmm dd hh:mm:ss] format for each line\n");
2490         printf("                   of output to the CLI\n");
2491         printf("   -v              Increase verbosity (multiple v's = more verbose)\n");
2492         printf("   -x <cmd>        Execute command <cmd> (only valid with -r)\n");
2493         printf("   -s <socket>     Connect to Asterisk via socket <socket> (only valid with -r)\n");
2494         printf("\n");
2495         return 0;
2496 }
2497
2498 static void ast_readconfig(void)
2499 {
2500         struct ast_config *cfg;
2501         struct ast_variable *v;
2502         char *config = DEFAULT_CONFIG_FILE;
2503         char hostname[MAXHOSTNAMELEN] = "";
2504         struct ast_flags config_flags = { 0 };
2505         struct {
2506                 unsigned int dbdir:1;
2507                 unsigned int keydir:1;
2508         } found = { 0, 0 };
2509
2510         if (ast_opt_override_config) {
2511                 cfg = ast_config_load(ast_config_AST_CONFIG_FILE, config_flags);
2512                 if (!cfg)
2513                         ast_log(LOG_WARNING, "Unable to open specified master config file '%s', using built-in defaults\n", ast_config_AST_CONFIG_FILE);
2514         } else
2515                 cfg = ast_config_load(config, config_flags);
2516
2517         /* init with buildtime config */
2518         ast_copy_string(cfg_paths.config_dir, DEFAULT_CONFIG_DIR, sizeof(cfg_paths.config_dir));
2519         ast_copy_string(cfg_paths.spool_dir, DEFAULT_SPOOL_DIR, sizeof(cfg_paths.spool_dir));
2520         ast_copy_string(cfg_paths.module_dir, DEFAULT_MODULE_DIR, sizeof(cfg_paths.module_dir));
2521         snprintf(cfg_paths.monitor_dir, sizeof(cfg_paths.monitor_dir) - 1, "%s/monitor", cfg_paths.spool_dir);
2522         ast_copy_string(cfg_paths.var_dir, DEFAULT_VAR_DIR, sizeof(cfg_paths.var_dir));
2523         ast_copy_string(cfg_paths.data_dir, DEFAULT_DATA_DIR, sizeof(cfg_paths.data_dir));
2524         ast_copy_string(cfg_paths.log_dir, DEFAULT_LOG_DIR, sizeof(cfg_paths.log_dir));
2525         ast_copy_string(cfg_paths.agi_dir, DEFAULT_AGI_DIR, sizeof(cfg_paths.agi_dir));
2526         ast_copy_string(cfg_paths.db_path, DEFAULT_DB, sizeof(cfg_paths.db_path));
2527         ast_copy_string(cfg_paths.key_dir, DEFAULT_KEY_DIR, sizeof(cfg_paths.key_dir));
2528         ast_copy_string(cfg_paths.pid_path, DEFAULT_PID, sizeof(cfg_paths.pid_path));
2529         ast_copy_string(cfg_paths.socket_path, DEFAULT_SOCKET, sizeof(cfg_paths.socket_path));
2530         ast_copy_string(cfg_paths.run_dir, DEFAULT_RUN_DIR, sizeof(cfg_paths.run_dir));
2531
2532         /* no asterisk.conf? no problem, use buildtime config! */
2533         if (!cfg) {
2534                 return;
2535         }
2536
2537         for (v = ast_variable_browse(cfg, "files"); v; v = v->next) {
2538                 if (!strcasecmp(v->name, "astctlpermissions"))
2539                         ast_copy_string(ast_config_AST_CTL_PERMISSIONS, v->value, sizeof(ast_config_AST_CTL_PERMISSIONS));
2540                 else if (!strcasecmp(v->name, "astctlowner"))
2541                         ast_copy_string(ast_config_AST_CTL_OWNER, v->value, sizeof(ast_config_AST_CTL_OWNER));
2542                 else if (!strcasecmp(v->name, "astctlgroup"))
2543                         ast_copy_string(ast_config_AST_CTL_GROUP, v->value, sizeof(ast_config_AST_CTL_GROUP));
2544                 else if (!strcasecmp(v->name, "astctl"))
2545                         ast_copy_string(ast_config_AST_CTL, v->value, sizeof(ast_config_AST_CTL));
2546         }
2547
2548         for (v = ast_variable_browse(cfg, "directories"); v; v = v->next) {
2549                 if (!strcasecmp(v->name, "astetcdir")) {
2550                         ast_copy_string(cfg_paths.config_dir, v->value, sizeof(cfg_paths.config_dir));
2551                 } else if (!strcasecmp(v->name, "astspooldir")) {
2552                         ast_copy_string(cfg_paths.spool_dir, v->value, sizeof(cfg_paths.spool_dir));
2553                         snprintf(cfg_paths.monitor_dir, sizeof(cfg_paths.monitor_dir) - 1, "%s/monitor", v->value);
2554                 } else if (!strcasecmp(v->name, "astvarlibdir")) {
2555                         ast_copy_string(cfg_paths.var_dir, v->value, sizeof(cfg_paths.var_dir));
2556                         if (!found.dbdir)
2557                                 snprintf(cfg_paths.db_path, sizeof(cfg_paths.db_path), "%s/astdb", v->value);
2558                 } else if (!strcasecmp(v->name, "astdbdir")) {
2559                         snprintf(cfg_paths.db_path, sizeof(cfg_paths.db_path), "%s/astdb", v->value);
2560                         found.dbdir = 1;
2561                 } else if (!strcasecmp(v->name, "astdatadir")) {
2562                         ast_copy_string(cfg_paths.data_dir, v->value, sizeof(cfg_paths.data_dir));
2563                         if (!found.keydir)
2564                                 snprintf(cfg_paths.key_dir, sizeof(cfg_paths.key_dir), "%s/keys", v->value);
2565                 } else if (!strcasecmp(v->name, "astkeydir")) {
2566                         snprintf(cfg_paths.key_dir, sizeof(cfg_paths.key_dir), "%s/keys", v->value);
2567                         found.keydir = 1;
2568                 } else if (!strcasecmp(v->name, "astlogdir")) {
2569                         ast_copy_string(cfg_paths.log_dir, v->value, sizeof(cfg_paths.log_dir));
2570                 } else if (!strcasecmp(v->name, "astagidir")) {
2571                         ast_copy_string(cfg_paths.agi_dir, v->value, sizeof(cfg_paths.agi_dir));
2572                 } else if (!strcasecmp(v->name, "astrundir")) {
2573                         snprintf(cfg_paths.pid_path, sizeof(cfg_paths.pid_path), "%s/%s", v->value, "asterisk.pid");
2574                         snprintf(cfg_paths.socket_path, sizeof(cfg_paths.socket_path), "%s/%s", v->value, ast_config_AST_CTL);
2575                         ast_copy_string(cfg_paths.run_dir, v->value, sizeof(cfg_paths.run_dir));
2576                 } else if (!strcasecmp(v->name, "astmoddir")) {
2577                         ast_copy_string(cfg_paths.module_dir, v->value, sizeof(cfg_paths.module_dir));
2578                 }
2579         }
2580
2581         for (v = ast_variable_browse(cfg, "options"); v; v = v->next) {
2582                 /* verbose level (-v at startup) */
2583                 if (!strcasecmp(v->name, "verbose")) {
2584                         option_verbose = atoi(v->value);
2585                 /* whether or not to force timestamping in CLI verbose output. (-T at startup) */
2586                 } else if (!strcasecmp(v->name, "timestamp")) {
2587                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_TIMESTAMP);
2588                 /* whether or not to support #exec in config files */
2589                 } else if (!strcasecmp(v->name, "execincludes")) {
2590                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_EXEC_INCLUDES);
2591                 /* debug level (-d at startup) */
2592                 } else if (!strcasecmp(v->name, "debug")) {
2593                         option_debug = 0;
2594                         if (sscanf(v->value, "%d", &option_debug) != 1) {
2595                                 option_debug = ast_true(v->value);
2596                         }
2597 #if HAVE_WORKING_FORK
2598                 /* Disable forking (-f at startup) */
2599                 } else if (!strcasecmp(v->name, "nofork")) {
2600                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_NO_FORK);
2601                 /* Always fork, even if verbose or debug are enabled (-F at startup) */
2602                 } else if (!strcasecmp(v->name, "alwaysfork")) {
2603                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_ALWAYS_FORK);
2604 #endif
2605                 /* Run quietly (-q at startup ) */
2606                 } else if (!strcasecmp(v->name, "quiet")) {
2607                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_QUIET);
2608                 /* Run as console (-c at startup, implies nofork) */
2609                 } else if (!strcasecmp(v->name, "console")) {
2610                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_CONSOLE);
2611                 /* Run with high priority if the O/S permits (-p at startup) */
2612                 } else if (!strcasecmp(v->name, "highpriority")) {
2613                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_HIGH_PRIORITY);
2614                 /* Initialize RSA auth keys (IAX2) (-i at startup) */
2615                 } else if (!strcasecmp(v->name, "initcrypto")) {
2616                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_INIT_KEYS);
2617                 /* Disable ANSI colors for console (-c at startup) */
2618                 } else if (!strcasecmp(v->name, "nocolor")) {
2619                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_NO_COLOR);
2620                 /* Disable some usage warnings for picky people :p */
2621                 } else if (!strcasecmp(v->name, "dontwarn")) {
2622                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_DONT_WARN);
2623                 /* Dump core in case of crash (-g) */
2624                 } else if (!strcasecmp(v->name, "dumpcore")) {
2625                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_DUMP_CORE);
2626                 /* Cache recorded sound files to another directory during recording */
2627                 } else if (!strcasecmp(v->name, "cache_record_files")) {
2628                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_CACHE_RECORD_FILES);
2629                 /* Specify cache directory */
2630                 }  else if (!strcasecmp(v->name, "record_cache_dir")) {
2631                         ast_copy_string(record_cache_dir, v->value, AST_CACHE_DIR_LEN);
2632                 /* Build transcode paths via SLINEAR, instead of directly */
2633                 } else if (!strcasecmp(v->name, "transcode_via_sln")) {
2634                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_TRANSCODE_VIA_SLIN);
2635                 /* Transmit SLINEAR silence while a channel is being recorded */
2636                 } else if (!strcasecmp(v->name, "transmit_silence_during_record")) {
2637                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_TRANSMIT_SILENCE);
2638                 /* Enable internal timing */
2639                 } else if (!strcasecmp(v->name, "internal_timing")) {
2640                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_INTERNAL_TIMING);
2641                 } else if (!strcasecmp(v->name, "maxcalls")) {
2642                         if ((sscanf(v->value, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0)) {
2643                                 option_maxcalls = 0;
2644                         }
2645                 } else if (!strcasecmp(v->name, "maxload")) {
2646                         double test[1];
2647
2648                         if (getloadavg(test, 1) == -1) {
2649                                 ast_log(LOG_ERROR, "Cannot obtain load average on this system. 'maxload' option disabled.\n");
2650                                 option_maxload = 0.0;
2651                         } else if ((sscanf(v->value, "%lf", &option_maxload) != 1) || (option_maxload < 0.0)) {
2652                                 option_maxload = 0.0;
2653                         }
2654                 /* Set the maximum amount of open files */
2655                 } else if (!strcasecmp(v->name, "maxfiles")) {
2656                         option_maxfiles = atoi(v->value);
2657                         set_ulimit(option_maxfiles);
2658                 /* What user to run as */
2659                 } else if (!strcasecmp(v->name, "runuser")) {
2660                         ast_copy_string(cfg_paths.run_user, v->value, sizeof(cfg_paths.run_user));
2661                 /* What group to run as */
2662                 } else if (!strcasecmp(v->name, "rungroup")) {
2663                         ast_copy_string(cfg_paths.run_group, v->value, sizeof(cfg_paths.run_group));
2664                 } else if (!strcasecmp(v->name, "systemname")) {
2665                         ast_copy_string(cfg_paths.system_name, v->value, sizeof(cfg_paths.system_name));
2666                 } else if (!strcasecmp(v->name, "autosystemname")) {
2667                         if (ast_true(v->value)) {
2668                                 if (!gethostname(hostname, sizeof(hostname) - 1))
2669                                         ast_copy_string(cfg_paths.system_name, hostname, sizeof(cfg_paths.system_name));
2670                                 else {
2671                                         if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)){
2672                                                 ast_copy_string(cfg_paths.system_name, "localhost", sizeof(cfg_paths.system_name));
2673                                         }
2674                                         ast_log(LOG_ERROR, "Cannot obtain hostname for this system.  Using '%s' instead.\n", ast_config_AST_SYSTEM_NAME);
2675                                 }
2676                         }
2677                 } else if (!strcasecmp(v->name, "languageprefix")) {
2678                         ast_language_is_prefix = ast_true(v->value);
2679                 } else if (!strcasecmp(v->name, "lockmode")) {
2680                         if (!strcasecmp(v->value, "lockfile")) {
2681                                 ast_set_lock_type(AST_LOCK_TYPE_LOCKFILE);
2682                         } else if (!strcasecmp(v->value, "flock")) {
2683                                 ast_set_lock_type(AST_LOCK_TYPE_FLOCK);
2684                         } else {
2685                                 ast_log(LOG_WARNING, "'%s' is not a valid setting for the lockmode option, "
2686                                         "defaulting to 'lockfile'\n", v->value);
2687                                 ast_set_lock_type(AST_LOCK_TYPE_LOCKFILE);
2688                         }
2689 #if defined(HAVE_SYSINFO)
2690                 } else if (!strcasecmp(v->name, "minmemfree")) {
2691                         /* specify the minimum amount of free memory to retain.  Asterisk should stop accepting new calls
2692                          * if the amount of free memory falls below this watermark */
2693                         if ((sscanf(v->value, "%ld", &option_minmemfree) != 1) || (option_minmemfree < 0)) {
2694                                 option_minmemfree = 0;
2695                         }
2696 #endif
2697                 }
2698         }
2699         ast_config_destroy(cfg);
2700 }
2701
2702 static void *monitor_sig_flags(void *unused)
2703 {
2704         for (;;) {
2705                 struct pollfd p = { sig_alert_pipe[0], POLLIN, 0 };
2706                 int a;
2707                 poll(&p, 1, -1);
2708                 if (sig_flags.need_reload) {
2709                         sig_flags.need_reload = 0;
2710                         ast_module_reload(NULL);
2711                 }
2712                 if (sig_flags.need_quit) {
2713                         sig_flags.need_quit = 0;
2714                         quit_handler(0, 0, 1, 0);
2715                 }
2716                 read(sig_alert_pipe[0], &a, sizeof(a));
2717         }
2718
2719         return NULL;
2720 }
2721
2722 static void *canary_thread(void *unused)
2723 {
2724         struct stat canary_stat;
2725         struct timeval tv;
2726
2727         /* Give the canary time to sing */
2728         sleep(120);
2729
2730         for (;;) {
2731                 stat(canary_filename, &canary_stat);
2732                 tv = ast_tvnow();
2733                 if (tv.tv_sec > canary_stat.st_mtime + 60) {
2734                         ast_log(LOG_WARNING, "The canary is no more.  He has ceased to be!  He's expired and gone to meet his maker!  He's a stiff!  Bereft of life, he rests in peace.  His metabolic processes are now history!  He's off the twig!  He's kicked the bucket.  He's shuffled off his mortal coil, run down the curtain, and joined the bleeding choir invisible!!  THIS is an EX-CANARY.  (Reducing priority)\n");
2735                         ast_set_priority(0);
2736                         pthread_exit(NULL);
2737                 }
2738
2739                 /* Check the canary once a minute */
2740                 sleep(60);
2741         }
2742 }
2743
2744 /* Used by libc's atexit(3) function */
2745 static void canary_exit(void)
2746 {
2747         if (canary_pid > 0)
2748                 kill(canary_pid, SIGKILL);
2749 }
2750
2751 static void run_startup_commands(void)
2752 {
2753         int fd;
2754         struct ast_config *cfg;
2755         struct ast_flags cfg_flags = { 0 };
2756         struct ast_variable *v;
2757
2758         if (!(cfg = ast_config_load("cli.conf", cfg_flags)))
2759                 return;
2760
2761         fd = open("/dev/null", O_RDWR);
2762         if (fd < 0)
2763                 return;
2764
2765         for (v = ast_variable_browse(cfg, "startup_commands"); v; v = v->next) {
2766                 if (ast_true(v->value))
2767                         ast_cli_command(fd, v->name);
2768         }
2769
2770         close(fd);
2771         ast_config_destroy(cfg);
2772 }
2773
2774 int main(int argc, char *argv[])
2775 {
2776         int c;
2777         char filename[80] = "";
2778         char hostname[MAXHOSTNAMELEN] = "";
2779         char tmp[80];
2780         char * xarg = NULL;
2781         int x;
2782         FILE *f;
2783         sigset_t sigs;
2784         int num;
2785         int isroot = 1;
2786         char *buf;
2787         const char *runuser = NULL, *rungroup = NULL;
2788         char *remotesock = NULL;
2789
2790         /* Remember original args for restart */
2791         if (argc > sizeof(_argv) / sizeof(_argv[0]) - 1) {
2792                 fprintf(stderr, "Truncating argument size to %d\n", (int)(sizeof(_argv) / sizeof(_argv[0])) - 1);
2793                 argc = sizeof(_argv) / sizeof(_argv[0]) - 1;
2794         }
2795         for (x = 0; x < argc; x++)
2796                 _argv[x] = argv[x];
2797         _argv[x] = NULL;
2798
2799         if (geteuid() != 0)
2800                 isroot = 0;
2801
2802         /* if the progname is rasterisk consider it a remote console */
2803         if (argv[0] && (strstr(argv[0], "rasterisk")) != NULL) {
2804                 ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE);
2805         }
2806         if (gethostname(hostname, sizeof(hostname)-1))
2807                 ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
2808         ast_mainpid = getpid();
2809         ast_ulaw_init();
2810         ast_alaw_init();
2811         callerid_init();
2812         ast_builtins_init();
2813         ast_utils_init();
2814         tdd_init();
2815
2816         if (getenv("HOME"))
2817                 snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
2818         /* Check for options */
2819         while ((c = getopt(argc, argv, "mtThfFdvVqprRgciInx:U:G:C:L:M:e:s:")) != -1) {
2820                 switch (c) {
2821 #if defined(HAVE_SYSINFO)
2822                 case 'e':
2823                         if ((sscanf(&optarg[1], "%ld", &option_minmemfree) != 1) || (option_minmemfree < 0)) {
2824                                 option_minmemfree = 0;
2825                         }
2826                         break;
2827 #endif
2828 #if HAVE_WORKING_FORK
2829                 case 'F':
2830                         ast_set_flag(&ast_options, AST_OPT_FLAG_ALWAYS_FORK);
2831                         break;
2832                 case 'f':
2833                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK);
2834                         break;
2835 #endif
2836                 case 'd':
2837                         option_debug++;
2838                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK);
2839                         break;
2840                 case 'c':
2841                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_CONSOLE);
2842                         break;
2843                 case 'n':
2844                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_COLOR);
2845                         break;
2846                 case 'r':
2847                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE);
2848                         break;
2849                 case 'R':
2850                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE | AST_OPT_FLAG_RECONNECT);
2851                         break;
2852                 case 'p':
2853                         ast_set_flag(&ast_options, AST_OPT_FLAG_HIGH_PRIORITY);
2854                         break;
2855                 case 'v':
2856                         option_verbose++;
2857                         ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK);
2858                         break;
2859                 case 'm':
2860                         ast_set_flag(&ast_options, AST_OPT_FLAG_MUTE);
2861                         break;
2862                 case 'M':
2863                         if ((sscanf(optarg, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0))
2864                                 option_maxcalls = 0;
2865                         break;
2866                 case 'L':
2867                         if ((sscanf(optarg, "%lf", &option_maxload) != 1) || (option_maxload < 0.0))
2868                                 option_maxload = 0.0;
2869                         break;
2870                 case 'q':
2871                         ast_set_flag(&ast_options, AST_OPT_FLAG_QUIET);
2872                         break;
2873                 case 't':
2874                         ast_set_flag(&ast_options, AST_OPT_FLAG_CACHE_RECORD_FILES);
2875                         break;
2876                 case 'T':
2877                         ast_set_flag(&ast_options, AST_OPT_FLAG_TIMESTAMP);
2878                         break;
2879                 case 'x':
2880                         ast_set_flag(&ast_options, AST_OPT_FLAG_EXEC);
2881                         xarg = ast_strdupa(optarg);
2882                         break;
2883                 case 'C':
2884                         ast_copy_string(cfg_paths.config_file, optarg, sizeof(cfg_paths.config_file));
2885                         ast_set_flag(&ast_options, AST_OPT_FLAG_OVERRIDE_CONFIG);
2886                         break;
2887                 case 'I':
2888                         ast_set_flag(&ast_options, AST_OPT_FLAG_INTERNAL_TIMING);
2889                         break;
2890                 case 'i':
2891                         ast_set_flag(&ast_options, AST_OPT_FLAG_INIT_KEYS);
2892                         break;
2893                 case 'g':
2894                         ast_set_flag(&ast_options, AST_OPT_FLAG_DUMP_CORE);
2895                         break;
2896                 case 'h':
2897                         show_cli_help();
2898                         exit(0);
2899                 case 'V':
2900                         show_version();
2901                         exit(0);
2902                 case 'U':
2903                         runuser = ast_strdupa(optarg);
2904                         break;
2905                 case 'G':
2906                         rungroup = ast_strdupa(optarg);
2907                         break;
2908                 case 's':
2909                         remotesock = ast_strdupa(optarg);
2910                         break;
2911                 case '?':
2912                         exit(1);
2913                 }
2914         }
2915
2916         if (ast_opt_console || option_verbose || (ast_opt_remote && !ast_opt_exec)) {
2917                 ast_register_verbose(console_verboser);
2918                 WELCOME_MESSAGE;
2919         }
2920
2921         if (ast_opt_console && !option_verbose)
2922                 ast_verbose("[ Booting...\n");
2923
2924         if (ast_opt_always_fork && (ast_opt_remote || ast_opt_console)) {
2925                 ast_log(LOG_WARNING, "'alwaysfork' is not compatible with console or remote console mode; ignored\n");
2926                 ast_clear_flag(&ast_options, AST_OPT_FLAG_ALWAYS_FORK);
2927         }
2928
2929         /* For remote connections, change the name of the remote connection.
2930          * We do this for the benefit of init scripts (which need to know if/when
2931          * the main asterisk process has died yet). */
2932         if (ast_opt_remote) {
2933                 strcpy(argv[0], "rasterisk");
2934                 for (x = 1; x < argc; x++) {
2935                         argv[x] = argv[0] + 10;
2936                 }
2937         }
2938
2939         if (ast_opt_console && !option_verbose)
2940                 ast_verbose("[ Reading Master Configuration ]\n");
2941         ast_readconfig();
2942
2943         if (ast_opt_remote && remotesock != NULL)
2944                 ast_copy_string((char *) cfg_paths.socket_path, remotesock, sizeof(cfg_paths.socket_path));
2945
2946         if (!ast_language_is_prefix && !ast_opt_remote)
2947                 ast_log(LOG_WARNING, "The 'languageprefix' option in asterisk.conf is deprecated; in a future release it will be removed, and your sound files will need to be organized in the 'new style' language layout.\n");
2948
2949         if (ast_opt_dump_core) {
2950                 struct rlimit l;
2951                 memset(&l, 0, sizeof(l));
2952                 l.rlim_cur = RLIM_INFINITY;
2953                 l.rlim_max = RLIM_INFINITY;
2954                 if (setrlimit(RLIMIT_CORE, &l)) {
2955                         ast_log(LOG_WARNING, "Unable to disable core size resource limit: %s\n", strerror(errno));
2956                 }
2957         }
2958
2959         if ((!rungroup) && !ast_strlen_zero(ast_config_AST_RUN_GROUP))
2960                 rungroup = ast_config_AST_RUN_GROUP;
2961         if ((!runuser) && !ast_strlen_zero(ast_config_AST_RUN_USER))
2962                 runuser = ast_config_AST_RUN_USER;
2963
2964         /* Must install this signal handler up here to ensure that if the canary
2965          * fails to execute that it doesn't kill the Asterisk process.
2966          */
2967         signal(SIGCHLD, child_handler);
2968
2969 #ifndef __CYGWIN__
2970
2971         if (isroot) {
2972                 ast_set_priority(ast_opt_high_priority);
2973                 if (ast_opt_high_priority) {
2974                         snprintf(canary_filename, sizeof(canary_filename), "%s/alt.asterisk.canary.tweet.tweet.tweet", ast_config_AST_RUN_DIR);
2975
2976                         canary_pid = fork();
2977                         if (canary_pid == 0) {
2978                                 char canary_binary[128], *lastslash;
2979                                 int fd;
2980
2981                                 /* Reset signal handler */
2982                                 signal(SIGCHLD, SIG_DFL);
2983
2984                                 for (fd = 0; fd < 100; fd++)
2985                                         close(fd);
2986
2987                                 execlp("astcanary", "astcanary", canary_filename, (char *)NULL);
2988
2989                                 /* If not found, try the same path as used to execute asterisk */
2990                                 ast_copy_string(canary_binary, argv[0], sizeof(canary_binary));
2991                                 if ((lastslash = strrchr(canary_binary, '/'))) {
2992                                         ast_copy_string(lastslash + 1, "astcanary", sizeof(canary_binary) + canary_binary - (lastslash + 1));
2993                                         execl(canary_binary, "astcanary", canary_filename, (char *)NULL);
2994                                 }
2995
2996                                 /* Should never happen */
2997                                 _exit(1);
2998                         } else if (canary_pid > 0) {
2999                                 pthread_t dont_care;
3000                                 ast_pthread_create_detached(&dont_care, NULL, canary_thread, NULL);
3001                         }
3002
3003                         /* Kill the canary when we exit */
3004                         atexit(canary_exit);
3005                 }
3006         }
3007
3008         if (isroot && rungroup) {
3009                 struct group *gr;
3010                 gr = getgrnam(rungroup);
3011                 if (!gr) {
3012                         ast_log(LOG_WARNING, "No such group '%s'!\n", rungroup);
3013                         exit(1);
3014                 }
3015                 if (setgid(gr->gr_gid)) {
3016                         ast_log(LOG_WARNING, "Unable to setgid to %d (%s)\n", (int)gr->gr_gid, rungroup);
3017                         exit(1);
3018                 }
3019                 if (setgroups(0, NULL)) {
3020                         ast_log(LOG_WARNING, "Unable to drop unneeded groups\n");
3021                         exit(1);
3022                 }
3023                 if (option_verbose)
3024                         ast_verbose("Running as group '%s'\n", rungroup);
3025         }
3026
3027         if (runuser && !ast_test_flag(&ast_options, AST_OPT_FLAG_REMOTE)) {
3028 #ifdef HAVE_CAP
3029                 int has_cap = 1;
3030 #endif /* HAVE_CAP */
3031                 struct passwd *pw;
3032                 pw = getpwnam(runuser);
3033                 if (!pw) {
3034                         ast_log(LOG_WARNING, "No such user '%s'!\n", runuser);
3035                         exit(1);
3036                 }
3037 #ifdef HAVE_CAP
3038                 if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0)) {
3039                         ast_log(LOG_WARNING, "Unable to keep capabilities.\n");
3040                         has_cap = 0;
3041                 }
3042 #endif /* HAVE_CAP */
3043                 if (!isroot && pw->pw_uid != geteuid()) {
3044                         ast_log(LOG_ERROR, "Asterisk started as nonroot, but runuser '%s' requested.\n", runuser);
3045                         exit(1);
3046                 }
3047                 if (!rungroup) {
3048                         if (setgid(pw->pw_gid)) {
3049                                 ast_log(LOG_WARNING, "Unable to setgid to %d!\n", (int)pw->pw_gid);
3050                                 exit(1);
3051                         }
3052                         if (isroot && initgroups(pw->pw_name, pw->pw_gid)) {
3053                                 ast_log(LOG_WARNING, "Unable to init groups for '%s'\n", runuser);
3054                                 exit(1);
3055                         }
3056                 }
3057                 if (setuid(pw->pw_uid)) {
3058                         ast_log(LOG_WARNING, "Unable to setuid to %d (%s)\n", (int)pw->pw_uid, runuser);
3059                         exit(1);
3060                 }
3061                 if (option_verbose)
3062                         ast_verbose("Running as user '%s'\n", runuser);
3063 #ifdef HAVE_CAP
3064                 if (has_cap) {
3065                         cap_t cap;
3066
3067                         cap = cap_from_text("cap_net_admin=ep");
3068
3069                         if (cap_set_proc(cap))
3070                                 ast_log(LOG_WARNING, "Unable to install capabilities.\n");
3071
3072                         if (cap_free(cap))
3073                                 ast_log(LOG_WARNING, "Unable to drop capabilities.\n");
3074                 }
3075 #endif /* HAVE_CAP */
3076         }
3077
3078 #endif /* __CYGWIN__ */
3079
3080 #ifdef linux
3081         if (geteuid() && ast_opt_dump_core) {
3082                 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) < 0) {
3083                         ast_log(LOG_WARNING, "Unable to set the process for core dumps after changing to a non-root user. %s\n", strerror(errno));
3084                 }
3085         }
3086 #endif
3087
3088         ast_term_init();
3089         printf(term_end());
3090         fflush(stdout);
3091
3092         if (ast_opt_console && !option_verbose)
3093                 ast_verbose("[ Initializing Custom Configuration Options ]\n");
3094         /* custom config setup */
3095         register_config_cli();
3096         read_config_maps();
3097
3098         if (ast_opt_console) {
3099                 if (el_hist == NULL || el == NULL)
3100                         ast_el_initialize();
3101
3102                 if (!ast_strlen_zero(filename))
3103                         ast_el_read_history(filename);
3104         }
3105
3106         if (ast_tryconnect()) {
3107                 /* One is already running */
3108                 if (ast_opt_remote) {
3109                         if (ast_opt_exec) {