Merged revisions 178508 via svnmerge from
[asterisk/asterisk.git] / 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  *
26  * This is the main developer documentation for Asterisk. It is 
27  * generated by running "make progdocs" from the Asterisk source tree.  
28  *
29  * In addition to the information available on the Asterisk source code, 
30  * please see the appendices for information on coding guidelines, 
31  * release management, commit policies, and more.
32  *
33  * \par Additional documentation
34  * \arg \ref Licensing
35  * \arg \ref DevDoc 
36  * \arg \ref ConfigFiles
37  *
38  * \section copyright Copyright and Author
39  *
40  * Copyright (C) 1999 - 2009, Digium, Inc.
41  * Asterisk is a <a href="http://www.digium.com/en/company/view-policy.php?id=Trademark-Policy">registered trademark</a>
42  * of <a href="http://www.digium.com">Digium, Inc</a>.
43  *
44  * \author Mark Spencer <markster@digium.com>
45  * Also see \ref AstCREDITS
46  *
47  * See http://www.asterisk.org for more information about
48  * the Asterisk project. Please do not directly contact
49  * any of the maintainers of this project for assistance;
50  * the project provides a web site, mailing lists, and IRC
51  * channels for your use.
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 #elif defined(HAVE_SYSCTL)
82 #include <sys/param.h>
83 #include <sys/sysctl.h>
84 #if !defined(__OpenBSD__)
85 #include <sys/vmmeter.h>
86 #if defined(__FreeBSD__)
87 #include <vm/vm_param.h>
88 #endif
89 #endif
90 #if defined(HAVE_SWAPCTL)
91 #include <sys/swap.h>
92 #endif
93 #endif
94 #include <regex.h>
95
96 #if defined(SOLARIS)
97 int daemon(int, int);  /* defined in libresolv of all places */
98 #include <sys/loadavg.h>
99 #endif
100
101 #ifdef linux
102 #include <sys/prctl.h>
103 #ifdef HAVE_CAP
104 #include <sys/capability.h>
105 #endif /* HAVE_CAP */
106 #endif /* linux */
107
108 #include "asterisk/paths.h"     /* we define here the variables so better agree on the prototype */
109 #include "asterisk/network.h"
110 #include "asterisk/cli.h"
111 #include "asterisk/channel.h"
112 #include "asterisk/features.h"
113 #include "asterisk/ulaw.h"
114 #include "asterisk/alaw.h"
115 #include "asterisk/callerid.h"
116 #include "asterisk/image.h"
117 #include "asterisk/tdd.h"
118 #include "asterisk/term.h"
119 #include "asterisk/manager.h"
120 #include "asterisk/cdr.h"
121 #include "asterisk/pbx.h"
122 #include "asterisk/enum.h"
123 #include "asterisk/rtp.h"
124 #include "asterisk/http.h"
125 #include "asterisk/udptl.h"
126 #include "asterisk/app.h"
127 #include "asterisk/lock.h"
128 #include "asterisk/utils.h"
129 #include "asterisk/file.h"
130 #include "asterisk/io.h"
131 #include "editline/histedit.h"
132 #include "asterisk/config.h"
133 #include "asterisk/ast_version.h"
134 #include "asterisk/linkedlists.h"
135 #include "asterisk/devicestate.h"
136 #include "asterisk/module.h"
137 #include "asterisk/dsp.h"
138 #include "asterisk/buildinfo.h"
139 #include "asterisk/xmldoc.h"
140
141 #include "asterisk/doxyref.h"           /* Doxygen documentation */
142
143 #include "../defaults.h"
144
145 #ifndef AF_LOCAL
146 #define AF_LOCAL AF_UNIX
147 #define PF_LOCAL PF_UNIX
148 #endif
149
150 #define AST_MAX_CONNECTS 128
151 #define NUM_MSGS 64
152
153 /*! \brief Welcome message when starting a CLI interface */
154 #define WELCOME_MESSAGE \
155     ast_verbose("Asterisk %s, Copyright (C) 1999 - 2008 Digium, Inc. and others.\n" \
156                 "Created by Mark Spencer <markster@digium.com>\n" \
157                 "Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.\n" \
158                 "This is free software, with components licensed under the GNU General Public\n" \
159                 "License version 2 and other licenses; you are welcome to redistribute it under\n" \
160                 "certain conditions. Type 'core show license' for details.\n" \
161                 "=========================================================================\n", ast_get_version()) \
162
163 /*! \defgroup main_options Main Configuration Options
164  * \brief Main configuration options from asterisk.conf or OS command line on starting Asterisk.
165  * \arg \ref Config_ast "asterisk.conf"
166  * \note Some of them can be changed in the CLI 
167  */
168 /*! @{ */
169
170 struct ast_flags ast_options = { AST_DEFAULT_OPTIONS };
171 struct ast_flags ast_compat = { 7 };
172
173 int option_verbose;                             /*!< Verbosity level */
174 int option_debug;                               /*!< Debug level */
175 double option_maxload;                          /*!< Max load avg on system */
176 int option_maxcalls;                            /*!< Max number of active calls */
177 int option_maxfiles;                            /*!< Max number of open file handles (files, sockets) */
178 #if defined(HAVE_SYSINFO)
179 long option_minmemfree;                         /*!< Minimum amount of free system memory - stop accepting calls if free memory falls below this watermark */
180 #endif
181
182 /*! @} */
183
184 struct ast_eid g_eid;
185
186 /* XXX tmpdir is a subdir of the spool directory, and no way to remap it */
187 char record_cache_dir[AST_CACHE_DIR_LEN] = DEFAULT_TMP_DIR;
188
189 static int ast_socket = -1;             /*!< UNIX Socket for allowing remote control */
190 static int ast_consock = -1;            /*!< UNIX Socket for controlling another asterisk */
191 pid_t ast_mainpid;
192 struct console {
193         int fd;                         /*!< File descriptor */
194         int p[2];                       /*!< Pipe */
195         pthread_t t;                    /*!< Thread of handler */
196         int mute;                       /*!< Is the console muted for logs */
197         int uid;                        /*!< Remote user ID. */
198         int gid;                        /*!< Remote group ID. */
199         int levels[NUMLOGLEVELS];       /*!< Which log levels are enabled for the console */
200 };
201
202 struct ast_atexit {
203         void (*func)(void);
204         AST_RWLIST_ENTRY(ast_atexit) list;
205 };
206
207 static AST_RWLIST_HEAD_STATIC(atexits, ast_atexit);
208
209 struct timeval ast_startuptime;
210 struct timeval ast_lastreloadtime;
211
212 static History *el_hist;
213 static EditLine *el;
214 static char *remotehostname;
215
216 struct console consoles[AST_MAX_CONNECTS];
217
218 char defaultlanguage[MAX_LANGUAGE] = DEFAULT_LANGUAGE;
219
220 static int ast_el_add_history(char *);
221 static int ast_el_read_history(char *);
222 static int ast_el_write_history(char *);
223
224 struct _cfg_paths {
225         char config_dir[PATH_MAX];
226         char module_dir[PATH_MAX];
227         char spool_dir[PATH_MAX];
228         char monitor_dir[PATH_MAX];
229         char var_dir[PATH_MAX];
230         char data_dir[PATH_MAX];
231         char log_dir[PATH_MAX];
232         char agi_dir[PATH_MAX];
233         char run_dir[PATH_MAX];
234         char key_dir[PATH_MAX];
235
236         char config_file[PATH_MAX];
237         char db_path[PATH_MAX];
238         char pid_path[PATH_MAX];
239         char socket_path[PATH_MAX];
240         char run_user[PATH_MAX];
241         char run_group[PATH_MAX];
242         char system_name[128];
243 };
244
245 static struct _cfg_paths cfg_paths;
246
247 const char *ast_config_AST_CONFIG_DIR   = cfg_paths.config_dir;
248 const char *ast_config_AST_CONFIG_FILE  = cfg_paths.config_file;
249 const char *ast_config_AST_MODULE_DIR   = cfg_paths.module_dir;
250 const char *ast_config_AST_SPOOL_DIR    = cfg_paths.spool_dir;
251 const char *ast_config_AST_MONITOR_DIR  = cfg_paths.monitor_dir;
252 const char *ast_config_AST_VAR_DIR      = cfg_paths.var_dir;
253 const char *ast_config_AST_DATA_DIR     = cfg_paths.data_dir;
254 const char *ast_config_AST_LOG_DIR      = cfg_paths.log_dir;
255 const char *ast_config_AST_AGI_DIR      = cfg_paths.agi_dir;
256 const char *ast_config_AST_KEY_DIR      = cfg_paths.key_dir;
257 const char *ast_config_AST_RUN_DIR      = cfg_paths.run_dir;
258
259 const char *ast_config_AST_DB           = cfg_paths.db_path;
260 const char *ast_config_AST_PID          = cfg_paths.pid_path;
261 const char *ast_config_AST_SOCKET       = cfg_paths.socket_path;
262 const char *ast_config_AST_RUN_USER     = cfg_paths.run_user;
263 const char *ast_config_AST_RUN_GROUP    = cfg_paths.run_group;
264 const char *ast_config_AST_SYSTEM_NAME  = cfg_paths.system_name;
265
266 static char ast_config_AST_CTL_PERMISSIONS[PATH_MAX];
267 static char ast_config_AST_CTL_OWNER[PATH_MAX] = "\0";
268 static char ast_config_AST_CTL_GROUP[PATH_MAX] = "\0";
269 static char ast_config_AST_CTL[PATH_MAX] = "asterisk.ctl";
270
271 static char *_argv[256];
272 static int shuttingdown;
273 static int restartnow;
274 static pthread_t consolethread = AST_PTHREADT_NULL;
275 static int canary_pid = 0;
276 static char canary_filename[128];
277 static int canary_pipe = -1;
278
279 static char randompool[256];
280
281 static int sig_alert_pipe[2] = { -1, -1 };
282 static struct {
283          unsigned int need_reload:1;
284          unsigned int need_quit:1;
285 } sig_flags;
286
287 #if !defined(LOW_MEMORY)
288 struct file_version {
289         AST_RWLIST_ENTRY(file_version) list;
290         const char *file;
291         char *version;
292 };
293
294 static AST_RWLIST_HEAD_STATIC(file_versions, file_version);
295
296 void ast_register_file_version(const char *file, const char *version)
297 {
298         struct file_version *new;
299         char *work;
300         size_t version_length;
301
302         work = ast_strdupa(version);
303         work = ast_strip(ast_strip_quoted(work, "$", "$"));
304         version_length = strlen(work) + 1;
305         
306         if (!(new = ast_calloc(1, sizeof(*new) + version_length)))
307                 return;
308
309         new->file = file;
310         new->version = (char *) new + sizeof(*new);
311         memcpy(new->version, work, version_length);
312         AST_RWLIST_WRLOCK(&file_versions);
313         AST_RWLIST_INSERT_HEAD(&file_versions, new, list);
314         AST_RWLIST_UNLOCK(&file_versions);
315 }
316
317 void ast_unregister_file_version(const char *file)
318 {
319         struct file_version *find;
320
321         AST_RWLIST_WRLOCK(&file_versions);
322         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&file_versions, find, list) {
323                 if (!strcasecmp(find->file, file)) {
324                         AST_RWLIST_REMOVE_CURRENT(list);
325                         break;
326                 }
327         }
328         AST_RWLIST_TRAVERSE_SAFE_END;
329         AST_RWLIST_UNLOCK(&file_versions);
330
331         if (find)
332                 ast_free(find);
333 }
334
335 char *ast_complete_source_filename(const char *partial, int n)
336 {
337         struct file_version *find;
338         size_t len = strlen(partial);
339         int count = 0;
340         char *res = NULL;
341
342         AST_RWLIST_RDLOCK(&file_versions);
343         AST_RWLIST_TRAVERSE(&file_versions, find, list) {
344                 if (!strncasecmp(find->file, partial, len) && ++count > n) {
345                         res = ast_strdup(find->file);
346                         break;
347                 }
348         }
349         AST_RWLIST_UNLOCK(&file_versions);
350         return res;
351 }
352
353 /*! \brief Find version for given module name */
354 const char *ast_file_version_find(const char *file)
355 {
356         struct file_version *iterator;
357
358         AST_RWLIST_WRLOCK(&file_versions);
359         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&file_versions, iterator, list) {
360                 if (!strcasecmp(iterator->file, file))
361                         break;
362         }
363         AST_RWLIST_TRAVERSE_SAFE_END;
364         AST_RWLIST_UNLOCK(&file_versions);
365         if (iterator)
366                 return iterator->version;
367         return NULL;
368 }      
369        
370
371
372 struct thread_list_t {
373         AST_RWLIST_ENTRY(thread_list_t) list;
374         char *name;
375         pthread_t id;
376 };
377
378 static AST_RWLIST_HEAD_STATIC(thread_list, thread_list_t);
379
380 void ast_register_thread(char *name)
381
382         struct thread_list_t *new = ast_calloc(1, sizeof(*new));
383
384         if (!new)
385                 return;
386         new->id = pthread_self();
387         new->name = name; /* steal the allocated memory for the thread name */
388         AST_RWLIST_WRLOCK(&thread_list);
389         AST_RWLIST_INSERT_HEAD(&thread_list, new, list);
390         AST_RWLIST_UNLOCK(&thread_list);
391 }
392
393 void ast_unregister_thread(void *id)
394 {
395         struct thread_list_t *x;
396
397         AST_RWLIST_WRLOCK(&thread_list);
398         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&thread_list, x, list) {
399                 if ((void *) x->id == id) {
400                         AST_RWLIST_REMOVE_CURRENT(list);
401                         break;
402                 }
403         }
404         AST_RWLIST_TRAVERSE_SAFE_END;
405         AST_RWLIST_UNLOCK(&thread_list);
406         if (x) {
407                 ast_free(x->name);
408                 ast_free(x);
409         }
410 }
411
412 /*! \brief Give an overview of core settings */
413 static char *handle_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
414 {
415         char buf[BUFSIZ];
416         struct ast_tm tm;
417         char eid_str[128];
418
419         switch (cmd) {
420         case CLI_INIT:
421                 e->command = "core show settings";
422                 e->usage = "Usage: core show settings\n"
423                            "       Show core misc settings";
424                 return NULL;
425         case CLI_GENERATE:
426                 return NULL;
427         }
428
429         ast_eid_to_str(eid_str, sizeof(eid_str), &g_eid);
430
431         ast_cli(a->fd, "\nPBX Core settings\n");
432         ast_cli(a->fd, "-----------------\n");
433         ast_cli(a->fd, "  Version:                     %s\n", ast_get_version());
434         ast_cli(a->fd, "  Build Options:               %s\n", S_OR(AST_BUILDOPTS, "(none)"));
435         if (option_maxcalls)
436                 ast_cli(a->fd, "  Maximum calls:               %d (Current %d)\n", option_maxcalls, ast_active_channels());
437         else
438                 ast_cli(a->fd, "  Maximum calls:               Not set\n");
439         if (option_maxfiles)
440                 ast_cli(a->fd, "  Maximum open file handles:   %d\n", option_maxfiles); 
441         else
442                 ast_cli(a->fd, "  Maximum open file handles:   Not set\n");
443         ast_cli(a->fd, "  Verbosity:                   %d\n", option_verbose);
444         ast_cli(a->fd, "  Debug level:                 %d\n", option_debug);
445         ast_cli(a->fd, "  Maximum load average:        %lf\n", option_maxload);
446 #if defined(HAVE_SYSINFO)
447         ast_cli(a->fd, "  Minimum free memory:         %ld MB\n", option_minmemfree);
448 #endif
449         if (ast_localtime(&ast_startuptime, &tm, NULL)) {
450                 ast_strftime(buf, sizeof(buf), "%H:%M:%S", &tm);
451                 ast_cli(a->fd, "  Startup time:                %s\n", buf);
452         }
453         if (ast_localtime(&ast_lastreloadtime, &tm, NULL)) {
454                 ast_strftime(buf, sizeof(buf), "%H:%M:%S", &tm);
455                 ast_cli(a->fd, "  Last reload time:            %s\n", buf);
456         }
457         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);
458         ast_cli(a->fd, "  System name:                 %s\n", ast_config_AST_SYSTEM_NAME);
459         ast_cli(a->fd, "  Entity ID:                   %s\n", eid_str);
460         ast_cli(a->fd, "  Default language:            %s\n", defaultlanguage);
461         ast_cli(a->fd, "  Language prefix:             %s\n", ast_language_is_prefix ? "Enabled" : "Disabled");
462         ast_cli(a->fd, "  User name and group:         %s/%s\n", ast_config_AST_RUN_USER, ast_config_AST_RUN_GROUP);
463         ast_cli(a->fd, "  Executable includes:         %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_EXEC_INCLUDES) ? "Enabled" : "Disabled");
464         ast_cli(a->fd, "  Transcode via SLIN:          %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_TRANSCODE_VIA_SLIN) ? "Enabled" : "Disabled");
465         ast_cli(a->fd, "  Internal timing:             %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_INTERNAL_TIMING) ? "Enabled" : "Disabled");
466         ast_cli(a->fd, "  Transmit silence during rec: %s\n", ast_test_flag(&ast_options, AST_OPT_FLAG_INTERNAL_TIMING) ? "Enabled" : "Disabled");
467
468         ast_cli(a->fd, "\n* Subsystems\n");
469         ast_cli(a->fd, "  -------------\n");
470         ast_cli(a->fd, "  Manager (AMI):               %s\n", check_manager_enabled() ? "Enabled" : "Disabled");
471         ast_cli(a->fd, "  Web Manager (AMI/HTTP):      %s\n", check_webmanager_enabled() ? "Enabled" : "Disabled");
472         ast_cli(a->fd, "  Call data records:           %s\n", check_cdr_enabled() ? "Enabled" : "Disabled");
473         ast_cli(a->fd, "  Realtime Architecture (ARA): %s\n", ast_realtime_enabled() ? "Enabled" : "Disabled");
474
475         /*! \todo we could check musiconhold, voicemail, smdi, adsi, queues  */
476
477         ast_cli(a->fd, "\n* Directories\n");
478         ast_cli(a->fd, "  -------------\n");
479         ast_cli(a->fd, "  Configuration file:          %s\n", ast_config_AST_CONFIG_FILE);
480         ast_cli(a->fd, "  Configuration directory:     %s\n", ast_config_AST_CONFIG_DIR);
481         ast_cli(a->fd, "  Module directory:            %s\n", ast_config_AST_MODULE_DIR);
482         ast_cli(a->fd, "  Spool directory:             %s\n", ast_config_AST_SPOOL_DIR);
483         ast_cli(a->fd, "  Log directory:               %s\n", ast_config_AST_LOG_DIR);
484         ast_cli(a->fd, "\n\n");
485         return CLI_SUCCESS;
486 }
487
488 static char *handle_show_threads(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
489 {
490         int count = 0;
491         struct thread_list_t *cur;
492         switch (cmd) {
493         case CLI_INIT:
494                 e->command = "core show threads";
495                 e->usage = 
496                         "Usage: core show threads\n"
497                         "       List threads currently active in the system.\n";
498                 return NULL;
499         case CLI_GENERATE:
500                 return NULL;
501         }
502
503         AST_RWLIST_RDLOCK(&thread_list);
504         AST_RWLIST_TRAVERSE(&thread_list, cur, list) {
505                 ast_cli(a->fd, "%p %s\n", (void *)cur->id, cur->name);
506                 count++;
507         }
508         AST_RWLIST_UNLOCK(&thread_list);
509         ast_cli(a->fd, "%d threads listed.\n", count);
510         return CLI_SUCCESS;
511 }
512
513 #if defined (HAVE_SYSCTL) && defined(HAVE_SWAPCTL)
514 /*
515  * swapmode is rewritten by Tobias Weingartner <weingart@openbsd.org>
516  * to be based on the new swapctl(2) system call.
517  */
518 static int swapmode(int *used, int *total)
519 {
520         struct swapent *swdev;
521         int nswap, rnswap, i;
522
523         nswap = swapctl(SWAP_NSWAP, 0, 0);
524         if (nswap == 0)
525                 return 0;
526
527         swdev = ast_calloc(nswap, sizeof(*swdev));
528         if (swdev == NULL)
529                 return 0;
530
531         rnswap = swapctl(SWAP_STATS, swdev, nswap);
532         if (rnswap == -1) {
533                 ast_free(swdev);
534                 return 0;
535         }
536
537         /* if rnswap != nswap, then what? */
538
539         /* Total things up */
540         *total = *used = 0;
541         for (i = 0; i < nswap; i++) {
542                 if (swdev[i].se_flags & SWF_ENABLE) {
543                         *used += (swdev[i].se_inuse / (1024 / DEV_BSIZE));
544                         *total += (swdev[i].se_nblks / (1024 / DEV_BSIZE));
545                 }
546         }
547         ast_free(swdev);
548         return 1;
549 }
550 #elif defined(HAVE_SYSCTL) && !defined(HAVE_SYSINFO)
551 static int swapmode(int *used, int *total)
552 {
553         *used = *total = 0;
554         return 1;
555 }
556 #endif
557
558 #if defined(HAVE_SYSINFO) || defined(HAVE_SYSCTL)
559 /*! \brief Give an overview of system statistics */
560 static char *handle_show_sysinfo(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
561 {
562         int64_t physmem, freeram;
563         int totalswap = 0, freeswap = 0, nprocs = 0;
564         long uptime = 0;
565 #if defined(HAVE_SYSINFO)
566         struct sysinfo sys_info;
567         sysinfo(&sys_info);
568         uptime = sys_info.uptime/3600;
569         physmem = sys_info.totalram * sys_info.mem_unit;
570         freeram = (sys_info.freeram * sys_info.mem_unit) / 1024;
571         totalswap = (sys_info.totalswap * sys_info.mem_unit) / 1024;
572         freeswap = (sys_info.freeswap * sys_info.mem_unit) / 1024;
573         nprocs = sys_info.procs;
574 #elif defined(HAVE_SYSCTL)
575         static int pageshift;
576         struct vmtotal vmtotal;
577         struct timeval  boottime;
578         time_t  now;
579         int mib[2], pagesize, usedswap = 0;
580         size_t len;
581         /* calculate the uptime by looking at boottime */
582         time(&now);
583         mib[0] = CTL_KERN;
584         mib[1] = KERN_BOOTTIME;
585         len = sizeof(boottime);
586         if (sysctl(mib, 2, &boottime, &len, NULL, 0) != -1) {
587                 uptime = now - boottime.tv_sec;
588         }
589         uptime = uptime/3600;
590         /* grab total physical memory  */
591         mib[0] = CTL_HW;
592 #if defined(HW_PHYSMEM64)
593         mib[1] = HW_PHYSMEM64;
594 #else
595         mib[1] = HW_PHYSMEM;
596 #endif
597         len = sizeof(physmem);
598         sysctl(mib, 2, &physmem, &len, NULL, 0);
599
600         pagesize = getpagesize();
601         pageshift = 0;
602         while (pagesize > 1) {
603                 pageshift++;
604                 pagesize >>= 1;
605         }
606
607         /* we only need the amount of log(2)1024 for our conversion */
608         pageshift -= 10;
609
610         /* grab vm totals */
611         mib[0] = CTL_VM;
612         mib[1] = VM_METER;
613         len = sizeof(vmtotal);
614         sysctl(mib, 2, &vmtotal, &len, NULL, 0);
615         freeram = (vmtotal.t_free << pageshift);
616         /* generate swap usage and totals */
617         swapmode(&usedswap, &totalswap); 
618         freeswap = (totalswap - usedswap);
619         /* grab number of processes */
620 #if defined(__OpenBSD__)
621         mib[0] = CTL_KERN;
622         mib[1] = KERN_NPROCS;
623         len = sizeof(nprocs);
624         sysctl(mib, 2, &nprocs, &len, NULL, 0);
625 #endif
626 #endif
627
628         switch (cmd) {
629         case CLI_INIT:
630                 e->command = "core show sysinfo";
631                 e->usage =
632                         "Usage: core show sysinfo\n"
633                         "       List current system information.\n";
634                 return NULL;
635         case CLI_GENERATE:
636                 return NULL;
637         }
638
639         ast_cli(a->fd, "\nSystem Statistics\n");
640         ast_cli(a->fd, "-----------------\n");
641         ast_cli(a->fd, "  System Uptime:             %ld hours\n", uptime);
642         ast_cli(a->fd, "  Total RAM:                 %ld KiB\n", (long)physmem/1024);
643         ast_cli(a->fd, "  Free RAM:                  %ld KiB\n", (long)freeram);
644 #if defined(HAVE_SYSINFO)
645         ast_cli(a->fd, "  Buffer RAM:                %ld KiB\n", (sys_info.bufferram * sys_info.mem_unit)/1024);
646 #endif
647         ast_cli(a->fd, "  Total Swap Space:          %ld KiB\n", (long)totalswap);
648         ast_cli(a->fd, "  Free Swap Space:           %ld KiB\n\n", (long)freeswap);
649         ast_cli(a->fd, "  Number of Processes:       %d \n\n", nprocs);
650         return CLI_SUCCESS;
651 }
652 #endif
653
654 struct profile_entry {
655         const char *name;
656         uint64_t        scale;  /* if non-zero, values are scaled by this */
657         int64_t mark;
658         int64_t value;
659         int64_t events;
660 };
661
662 struct profile_data {
663         int entries;
664         int max_size;
665         struct profile_entry e[0];
666 };
667
668 static struct profile_data *prof_data;
669
670 /*! \brief allocates a counter with a given name and scale.
671  * \return Returns the identifier of the counter.
672  */
673 int ast_add_profile(const char *name, uint64_t scale)
674 {
675         int l = sizeof(struct profile_data);
676         int n = 10;     /* default entries */
677
678         if (prof_data == NULL) {
679                 prof_data = ast_calloc(1, l + n*sizeof(struct profile_entry));
680                 if (prof_data == NULL)
681                         return -1;
682                 prof_data->entries = 0;
683                 prof_data->max_size = n;
684         }
685         if (prof_data->entries >= prof_data->max_size) {
686                 void *p;
687                 n = prof_data->max_size + 20;
688                 p = ast_realloc(prof_data, l + n*sizeof(struct profile_entry));
689                 if (p == NULL)
690                         return -1;
691                 prof_data = p;
692                 prof_data->max_size = n;
693         }
694         n = prof_data->entries++;
695         prof_data->e[n].name = ast_strdup(name);
696         prof_data->e[n].value = 0;
697         prof_data->e[n].events = 0;
698         prof_data->e[n].mark = 0;
699         prof_data->e[n].scale = scale;
700         return n;
701 }
702
703 int64_t ast_profile(int i, int64_t delta)
704 {
705         if (!prof_data || i < 0 || i > prof_data->entries)      /* invalid index */
706                 return 0;
707         if (prof_data->e[i].scale > 1)
708                 delta /= prof_data->e[i].scale;
709         prof_data->e[i].value += delta;
710         prof_data->e[i].events++;
711         return prof_data->e[i].value;
712 }
713
714 /* The RDTSC instruction was introduced on the Pentium processor and is not
715  * implemented on certain clones, like the Cyrix 586. Hence, the previous
716  * expectation of __i386__ was in error. */
717 #if defined ( __i686__) && (defined(__FreeBSD__) || defined(linux))
718 #if defined(__FreeBSD__)
719 #include <machine/cpufunc.h>
720 #elif defined(linux)
721 static __inline uint64_t
722 rdtsc(void)
723
724         uint64_t rv;
725
726         __asm __volatile(".byte 0x0f, 0x31" : "=A" (rv));
727         return (rv);
728 }
729 #endif
730 #else   /* supply a dummy function on other platforms */
731 static __inline uint64_t
732 rdtsc(void)
733 {
734         return 0;
735 }
736 #endif
737
738 int64_t ast_mark(int i, int startstop)
739 {
740         if (!prof_data || i < 0 || i > prof_data->entries) /* invalid index */
741                 return 0;
742         if (startstop == 1)
743                 prof_data->e[i].mark = rdtsc();
744         else {
745                 prof_data->e[i].mark = (rdtsc() - prof_data->e[i].mark);
746                 if (prof_data->e[i].scale > 1)
747                         prof_data->e[i].mark /= prof_data->e[i].scale;
748                 prof_data->e[i].value += prof_data->e[i].mark;
749                 prof_data->e[i].events++;
750         }
751         return prof_data->e[i].mark;
752 }
753
754 #define DEFINE_PROFILE_MIN_MAX_VALUES min = 0; \
755         max = prof_data->entries;\
756         if  (a->argc > 3) { /* specific entries */ \
757                 if (isdigit(a->argv[3][0])) { \
758                         min = atoi(a->argv[3]); \
759                         if (a->argc == 5 && strcmp(a->argv[4], "-")) \
760                                 max = atoi(a->argv[4]); \
761                 } else \
762                         search = a->argv[3]; \
763         } \
764         if (max > prof_data->entries) \
765                 max = prof_data->entries;
766
767 static char *handle_show_profile(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
768 {
769         int i, min, max;
770         char *search = NULL;
771         switch (cmd) {
772         case CLI_INIT:
773                 e->command = "core show profile";
774                 e->usage = "Usage: core show profile\n"
775                            "       show profile information";
776                 return NULL;
777         case CLI_GENERATE:
778                 return NULL;
779         }
780
781         if (prof_data == NULL)
782                 return 0;
783
784         DEFINE_PROFILE_MIN_MAX_VALUES;
785         ast_cli(a->fd, "profile values (%d, allocated %d)\n-------------------\n",
786                 prof_data->entries, prof_data->max_size);
787         ast_cli(a->fd, "%6s   %8s  %10s %12s %12s  %s\n", "ID", "Scale", "Events",
788                         "Value", "Average", "Name");
789         for (i = min; i < max; i++) {
790                 struct profile_entry *entry = &prof_data->e[i];
791                 if (!search || strstr(entry->name, search))
792                     ast_cli(a->fd, "%6d: [%8ld] %10ld %12lld %12lld  %s\n",
793                         i,
794                         (long)entry->scale,
795                         (long)entry->events, (long long)entry->value,
796                         (long long)(entry->events ? entry->value / entry->events : entry->value),
797                         entry->name);
798         }
799         return CLI_SUCCESS;
800 }
801
802 static char *handle_clear_profile(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
803 {
804         int i, min, max;
805         char *search = NULL;
806         switch (cmd) {
807         case CLI_INIT:
808                 e->command = "core clear profile";
809                 e->usage = "Usage: core clear profile\n"
810                            "       clear profile information";
811                 return NULL;
812         case CLI_GENERATE:
813                 return NULL;
814         }
815
816         if (prof_data == NULL)
817                 return 0;
818
819         DEFINE_PROFILE_MIN_MAX_VALUES;
820         for (i= min; i < max; i++) {
821                 if (!search || strstr(prof_data->e[i].name, search)) {
822                         prof_data->e[i].value = 0;
823                         prof_data->e[i].events = 0;
824                 }
825         }
826         return CLI_SUCCESS;
827 }
828 #undef DEFINE_PROFILE_MIN_MAX_VALUES
829
830 /*! \brief CLI command to list module versions */
831 static char *handle_show_version_files(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
832 {
833 #define FORMAT "%-25.25s %-40.40s\n"
834         struct file_version *iterator;
835         regex_t regexbuf;
836         int havepattern = 0;
837         int havename = 0;
838         int count_files = 0;
839         char *ret = NULL;
840         int matchlen, which = 0;
841         struct file_version *find;
842
843         switch (cmd) {
844         case CLI_INIT:
845                 e->command = "core show file version [like]";
846                 e->usage = 
847                         "Usage: core show file version [like <pattern>]\n"
848                         "       Lists the revision numbers of the files used to build this copy of Asterisk.\n"
849                         "       Optional regular expression pattern is used to filter the file list.\n";
850                 return NULL;
851         case CLI_GENERATE:
852                 matchlen = strlen(a->word);
853                 if (a->pos != 3)
854                         return NULL;
855                 AST_RWLIST_RDLOCK(&file_versions);
856                 AST_RWLIST_TRAVERSE(&file_versions, find, list) {
857                         if (!strncasecmp(a->word, find->file, matchlen) && ++which > a->n) {
858                                 ret = ast_strdup(find->file);
859                                 break;
860                         }
861                 }
862                 AST_RWLIST_UNLOCK(&file_versions);
863                 return ret;
864         }
865
866
867         switch (a->argc) {
868         case 6:
869                 if (!strcasecmp(a->argv[4], "like")) {
870                         if (regcomp(&regexbuf, a->argv[5], REG_EXTENDED | REG_NOSUB))
871                                 return CLI_SHOWUSAGE;
872                         havepattern = 1;
873                 } else
874                         return CLI_SHOWUSAGE;
875                 break;
876         case 5:
877                 havename = 1;
878                 break;
879         case 4:
880                 break;
881         default:
882                 return CLI_SHOWUSAGE;
883         }
884
885         ast_cli(a->fd, FORMAT, "File", "Revision");
886         ast_cli(a->fd, FORMAT, "----", "--------");
887         AST_RWLIST_RDLOCK(&file_versions);
888         AST_RWLIST_TRAVERSE(&file_versions, iterator, list) {
889                 if (havename && strcasecmp(iterator->file, a->argv[4]))
890                         continue;
891
892                 if (havepattern && regexec(&regexbuf, iterator->file, 0, NULL, 0))
893                         continue;
894
895                 ast_cli(a->fd, FORMAT, iterator->file, iterator->version);
896                 count_files++;
897                 if (havename)
898                         break;
899         }
900         AST_RWLIST_UNLOCK(&file_versions);
901         if (!havename) {
902                 ast_cli(a->fd, "%d files listed.\n", count_files);
903         }
904
905         if (havepattern)
906                 regfree(&regexbuf);
907
908         return CLI_SUCCESS;
909 #undef FORMAT
910 }
911
912 #endif /* ! LOW_MEMORY */
913
914 int ast_register_atexit(void (*func)(void))
915 {
916         struct ast_atexit *ae;
917
918         if (!(ae = ast_calloc(1, sizeof(*ae))))
919                 return -1;
920
921         ae->func = func;
922
923         ast_unregister_atexit(func);    
924
925         AST_RWLIST_WRLOCK(&atexits);
926         AST_RWLIST_INSERT_HEAD(&atexits, ae, list);
927         AST_RWLIST_UNLOCK(&atexits);
928
929         return 0;
930 }
931
932 void ast_unregister_atexit(void (*func)(void))
933 {
934         struct ast_atexit *ae = NULL;
935
936         AST_RWLIST_WRLOCK(&atexits);
937         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&atexits, ae, list) {
938                 if (ae->func == func) {
939                         AST_RWLIST_REMOVE_CURRENT(list);
940                         break;
941                 }
942         }
943         AST_RWLIST_TRAVERSE_SAFE_END;
944         AST_RWLIST_UNLOCK(&atexits);
945
946         if (ae)
947                 free(ae);
948 }
949
950 /* Sending commands from consoles back to the daemon requires a terminating NULL */
951 static int fdsend(int fd, const char *s)
952 {
953         return write(fd, s, strlen(s) + 1);
954 }
955
956 /* Sending messages from the daemon back to the display requires _excluding_ the terminating NULL */
957 static int fdprint(int fd, const char *s)
958 {
959         return write(fd, s, strlen(s));
960 }
961
962 /*! \brief NULL handler so we can collect the child exit status */
963 static void null_sig_handler(int sig)
964 {
965
966 }
967
968 AST_MUTEX_DEFINE_STATIC(safe_system_lock);
969 /*! \brief Keep track of how many threads are currently trying to wait*() on
970  *  a child process */
971 static unsigned int safe_system_level = 0;
972 static void *safe_system_prev_handler;
973
974 void ast_replace_sigchld(void)
975 {
976         unsigned int level;
977
978         ast_mutex_lock(&safe_system_lock);
979         level = safe_system_level++;
980
981         /* only replace the handler if it has not already been done */
982         if (level == 0)
983                 safe_system_prev_handler = signal(SIGCHLD, null_sig_handler);
984
985         ast_mutex_unlock(&safe_system_lock);
986 }
987
988 void ast_unreplace_sigchld(void)
989 {
990         unsigned int level;
991
992         ast_mutex_lock(&safe_system_lock);
993         level = --safe_system_level;
994
995         /* only restore the handler if we are the last one */
996         if (level == 0)
997                 signal(SIGCHLD, safe_system_prev_handler);
998
999         ast_mutex_unlock(&safe_system_lock);
1000 }
1001
1002 int ast_safe_system(const char *s)
1003 {
1004         pid_t pid;
1005         int res;
1006         struct rusage rusage;
1007         int status;
1008
1009 #if defined(HAVE_WORKING_FORK) || defined(HAVE_WORKING_VFORK)
1010         ast_replace_sigchld();
1011
1012 #ifdef HAVE_WORKING_FORK
1013         pid = fork();
1014 #else
1015         pid = vfork();
1016 #endif  
1017
1018         if (pid == 0) {
1019 #ifdef HAVE_CAP
1020                 cap_t cap = cap_from_text("cap_net_admin-eip");
1021
1022                 if (cap_set_proc(cap)) {
1023                         /* Careful with order! Logging cannot happen after we close FDs */
1024                         ast_log(LOG_WARNING, "Unable to remove capabilities.\n");
1025                 }
1026                 cap_free(cap);
1027 #endif
1028 #ifdef HAVE_WORKING_FORK
1029                 if (ast_opt_high_priority)
1030                         ast_set_priority(0);
1031                 /* Close file descriptors and launch system command */
1032                 ast_close_fds_above_n(STDERR_FILENO);
1033 #endif
1034                 execl("/bin/sh", "/bin/sh", "-c", s, (char *) NULL);
1035                 _exit(1);
1036         } else if (pid > 0) {
1037                 for (;;) {
1038                         res = wait4(pid, &status, 0, &rusage);
1039                         if (res > -1) {
1040                                 res = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
1041                                 break;
1042                         } else if (errno != EINTR) 
1043                                 break;
1044                 }
1045         } else {
1046                 ast_log(LOG_WARNING, "Fork failed: %s\n", strerror(errno));
1047                 res = -1;
1048         }
1049
1050         ast_unreplace_sigchld();
1051 #else /* !defined(HAVE_WORKING_FORK) && !defined(HAVE_WORKING_VFORK) */
1052         res = -1;
1053 #endif
1054
1055         return res;
1056 }
1057
1058 void ast_console_toggle_loglevel(int fd, int level, int state)
1059 {
1060         int x;
1061         for (x = 0;x < AST_MAX_CONNECTS; x++) {
1062                 if (fd == consoles[x].fd) {
1063                         consoles[x].levels[level] = state;
1064                         return;
1065                 }
1066         }
1067 }
1068
1069 /*!
1070  * \brief mute or unmute a console from logging
1071  */
1072 void ast_console_toggle_mute(int fd, int silent) {
1073         int x;
1074         for (x = 0;x < AST_MAX_CONNECTS; x++) {
1075                 if (fd == consoles[x].fd) {
1076                         if (consoles[x].mute) {
1077                                 consoles[x].mute = 0;
1078                                 if (!silent)
1079                                         ast_cli(fd, "Console is not muted anymore.\n");
1080                         } else {
1081                                 consoles[x].mute = 1;
1082                                 if (!silent)
1083                                         ast_cli(fd, "Console is muted.\n");
1084                         }
1085                         return;
1086                 }
1087         }
1088         ast_cli(fd, "Couldn't find remote console.\n");
1089 }
1090
1091 /*!
1092  * \brief log the string to all attached console clients
1093  */
1094 static void ast_network_puts_mutable(const char *string, int level)
1095 {
1096         int x;
1097         for (x = 0;x < AST_MAX_CONNECTS; x++) {
1098                 if (consoles[x].mute)
1099                         continue;
1100                 if (consoles[x].fd > -1) {
1101                         if (!consoles[x].levels[level]) 
1102                                 fdprint(consoles[x].p[1], string);
1103                 }
1104         }
1105 }
1106
1107 /*!
1108  * \brief log the string to the console, and all attached
1109  * console clients
1110  */
1111 void ast_console_puts_mutable(const char *string, int level)
1112 {
1113         fputs(string, stdout);
1114         fflush(stdout);
1115         ast_network_puts_mutable(string, level);
1116 }
1117
1118 /*!
1119  * \brief write the string to all attached console clients
1120  */
1121 static void ast_network_puts(const char *string)
1122 {
1123         int x;
1124         for (x = 0; x < AST_MAX_CONNECTS; x++) {
1125                 if (consoles[x].fd > -1) 
1126                         fdprint(consoles[x].p[1], string);
1127         }
1128 }
1129
1130 /*!
1131  * write the string to the console, and all attached
1132  * console clients
1133  */
1134 void ast_console_puts(const char *string)
1135 {
1136         fputs(string, stdout);
1137         fflush(stdout);
1138         ast_network_puts(string);
1139 }
1140
1141 static void network_verboser(const char *s)
1142 {
1143         ast_network_puts_mutable(s, __LOG_VERBOSE);
1144 }
1145
1146 static pthread_t lthread;
1147
1148 /*!
1149  * \brief read() function supporting the reception of user credentials.
1150  *
1151  * \param fd Socket file descriptor.
1152  * \param buffer Receive buffer.
1153  * \param size 'buffer' size.
1154  * \param con Console structure to set received credentials
1155  * \retval -1 on error
1156  * \retval the number of bytes received on success.
1157  */
1158 static int read_credentials(int fd, char *buffer, size_t size, struct console *con)
1159 {
1160 #if defined(SO_PEERCRED)
1161         struct ucred cred;
1162         socklen_t len = sizeof(cred);
1163 #endif
1164 #if defined(HAVE_GETPEEREID)
1165         uid_t uid;
1166         gid_t gid;
1167 #else
1168         int uid, gid;
1169 #endif
1170         int result;
1171
1172         result = read(fd, buffer, size);
1173         if (result < 0) {
1174                 return result;
1175         }
1176
1177 #if defined(SO_PEERCRED)
1178         if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cred, &len)) {
1179                 return result;
1180         }
1181         uid = cred.uid;
1182         gid = cred.gid;
1183 #elif defined(HAVE_GETPEEREID)
1184         if (getpeereid(fd, &uid, &gid)) {
1185                 return result;
1186         }
1187 #else
1188         return result;
1189 #endif
1190         con->uid = uid;
1191         con->gid = gid;
1192
1193         return result;
1194 }
1195
1196 static void *netconsole(void *vconsole)
1197 {
1198         struct console *con = vconsole;
1199         char hostname[MAXHOSTNAMELEN] = "";
1200         char tmp[512];
1201         int res;
1202         struct pollfd fds[2];
1203         
1204         if (gethostname(hostname, sizeof(hostname)-1))
1205                 ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
1206         snprintf(tmp, sizeof(tmp), "%s/%ld/%s\n", hostname, (long)ast_mainpid, ast_get_version());
1207         fdprint(con->fd, tmp);
1208         for (;;) {
1209                 fds[0].fd = con->fd;
1210                 fds[0].events = POLLIN;
1211                 fds[0].revents = 0;
1212                 fds[1].fd = con->p[0];
1213                 fds[1].events = POLLIN;
1214                 fds[1].revents = 0;
1215
1216                 res = poll(fds, 2, -1);
1217                 if (res < 0) {
1218                         if (errno != EINTR)
1219                                 ast_log(LOG_WARNING, "poll returned < 0: %s\n", strerror(errno));
1220                         continue;
1221                 }
1222                 if (fds[0].revents) {
1223                         res = read_credentials(con->fd, tmp, sizeof(tmp), con);
1224                         if (res < 1) {
1225                                 break;
1226                         }
1227                         tmp[res] = 0;
1228                         if (strncmp(tmp, "cli quit after ", 15) == 0) {
1229                                 ast_cli_command_multiple_full(con->uid, con->gid, con->fd, res - 15, tmp + 15);
1230                                 break;
1231                         }
1232                         ast_cli_command_multiple_full(con->uid, con->gid, con->fd, res, tmp);
1233                 }
1234                 if (fds[1].revents) {
1235                         res = read_credentials(con->p[0], tmp, sizeof(tmp), con);
1236                         if (res < 1) {
1237                                 ast_log(LOG_ERROR, "read returned %d\n", res);
1238                                 break;
1239                         }
1240                         res = write(con->fd, tmp, res);
1241                         if (res < 1)
1242                                 break;
1243                 }
1244         }
1245         if (!ast_opt_hide_connect) {
1246                 ast_verb(3, "Remote UNIX connection disconnected\n");
1247         }
1248         close(con->fd);
1249         close(con->p[0]);
1250         close(con->p[1]);
1251         con->fd = -1;
1252         
1253         return NULL;
1254 }
1255
1256 static void *listener(void *unused)
1257 {
1258         struct sockaddr_un sunaddr;
1259         int s;
1260         socklen_t len;
1261         int x;
1262         int flags;
1263         struct pollfd fds[1];
1264         for (;;) {
1265                 if (ast_socket < 0)
1266                         return NULL;
1267                 fds[0].fd = ast_socket;
1268                 fds[0].events = POLLIN;
1269                 s = poll(fds, 1, -1);
1270                 pthread_testcancel();
1271                 if (s < 0) {
1272                         if (errno != EINTR)
1273                                 ast_log(LOG_WARNING, "poll returned error: %s\n", strerror(errno));
1274                         continue;
1275                 }
1276                 len = sizeof(sunaddr);
1277                 s = accept(ast_socket, (struct sockaddr *)&sunaddr, &len);
1278                 if (s < 0) {
1279                         if (errno != EINTR)
1280                                 ast_log(LOG_WARNING, "Accept returned %d: %s\n", s, strerror(errno));
1281                 } else {
1282 #if !defined(SO_PASSCRED)
1283                         {
1284 #else
1285                         int sckopt = 1;
1286                         /* turn on socket credentials passing. */
1287                         if (setsockopt(s, SOL_SOCKET, SO_PASSCRED, &sckopt, sizeof(sckopt)) < 0) {
1288                                 ast_log(LOG_WARNING, "Unable to turn on socket credentials passing\n");
1289                         } else {
1290 #endif
1291                                 for (x = 0; x < AST_MAX_CONNECTS; x++) {
1292                                         if (consoles[x].fd >= 0) {
1293                                                 continue;
1294                                         }
1295                                         if (socketpair(AF_LOCAL, SOCK_STREAM, 0, consoles[x].p)) {
1296                                                 ast_log(LOG_ERROR, "Unable to create pipe: %s\n", strerror(errno));
1297                                                 consoles[x].fd = -1;
1298                                                 fdprint(s, "Server failed to create pipe\n");
1299                                                 close(s);
1300                                                 break;
1301                                         }
1302                                         flags = fcntl(consoles[x].p[1], F_GETFL);
1303                                         fcntl(consoles[x].p[1], F_SETFL, flags | O_NONBLOCK);
1304                                         consoles[x].fd = s;
1305                                         consoles[x].mute = 1; /* Default is muted, we will un-mute if necessary */
1306                                         /* Default uid and gid to -2, so then in cli.c/cli_has_permissions() we will be able
1307                                            to know if the user didn't send the credentials. */
1308                                         consoles[x].uid = -2;
1309                                         consoles[x].gid = -2;
1310                                         if (ast_pthread_create_detached_background(&consoles[x].t, NULL, netconsole, &consoles[x])) {
1311                                                 ast_log(LOG_ERROR, "Unable to spawn thread to handle connection: %s\n", strerror(errno));
1312                                                 close(consoles[x].p[0]);
1313                                                 close(consoles[x].p[1]);
1314                                                 consoles[x].fd = -1;
1315                                                 fdprint(s, "Server failed to spawn thread\n");
1316                                                 close(s);
1317                                         }
1318                                         break;
1319                                 }
1320                                 if (x >= AST_MAX_CONNECTS) {
1321                                         fdprint(s, "No more connections allowed\n");
1322                                         ast_log(LOG_WARNING, "No more connections allowed\n");
1323                                         close(s);
1324                                 } else if ((consoles[x].fd > -1) && (!ast_opt_hide_connect)) {
1325                                         ast_verb(3, "Remote UNIX connection\n");
1326                                 }
1327                         }
1328                 }
1329         }
1330         return NULL;
1331 }
1332
1333 static int ast_makesocket(void)
1334 {
1335         struct sockaddr_un sunaddr;
1336         int res;
1337         int x;
1338         uid_t uid = -1;
1339         gid_t gid = -1;
1340
1341         for (x = 0; x < AST_MAX_CONNECTS; x++)  
1342                 consoles[x].fd = -1;
1343         unlink(ast_config_AST_SOCKET);
1344         ast_socket = socket(PF_LOCAL, SOCK_STREAM, 0);
1345         if (ast_socket < 0) {
1346                 ast_log(LOG_WARNING, "Unable to create control socket: %s\n", strerror(errno));
1347                 return -1;
1348         }               
1349         memset(&sunaddr, 0, sizeof(sunaddr));
1350         sunaddr.sun_family = AF_LOCAL;
1351         ast_copy_string(sunaddr.sun_path, ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
1352         res = bind(ast_socket, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
1353         if (res) {
1354                 ast_log(LOG_WARNING, "Unable to bind socket to %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1355                 close(ast_socket);
1356                 ast_socket = -1;
1357                 return -1;
1358         }
1359         res = listen(ast_socket, 2);
1360         if (res < 0) {
1361                 ast_log(LOG_WARNING, "Unable to listen on socket %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1362                 close(ast_socket);
1363                 ast_socket = -1;
1364                 return -1;
1365         }
1366         if (ast_register_verbose(network_verboser)) {
1367                 ast_log(LOG_WARNING, "Unable to register network verboser?\n");
1368         }
1369
1370         ast_pthread_create_background(&lthread, NULL, listener, NULL);
1371
1372         if (!ast_strlen_zero(ast_config_AST_CTL_OWNER)) {
1373                 struct passwd *pw;
1374                 if ((pw = getpwnam(ast_config_AST_CTL_OWNER)) == NULL)
1375                         ast_log(LOG_WARNING, "Unable to find uid of user %s\n", ast_config_AST_CTL_OWNER);
1376                 else
1377                         uid = pw->pw_uid;
1378         }
1379                 
1380         if (!ast_strlen_zero(ast_config_AST_CTL_GROUP)) {
1381                 struct group *grp;
1382                 if ((grp = getgrnam(ast_config_AST_CTL_GROUP)) == NULL)
1383                         ast_log(LOG_WARNING, "Unable to find gid of group %s\n", ast_config_AST_CTL_GROUP);
1384                 else
1385                         gid = grp->gr_gid;
1386         }
1387
1388         if (chown(ast_config_AST_SOCKET, uid, gid) < 0)
1389                 ast_log(LOG_WARNING, "Unable to change ownership of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1390
1391         if (!ast_strlen_zero(ast_config_AST_CTL_PERMISSIONS)) {
1392                 int p1;
1393                 mode_t p;
1394                 sscanf(ast_config_AST_CTL_PERMISSIONS, "%o", &p1);
1395                 p = p1;
1396                 if ((chmod(ast_config_AST_SOCKET, p)) < 0)
1397                         ast_log(LOG_WARNING, "Unable to change file permissions of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
1398         }
1399
1400         return 0;
1401 }
1402
1403 static int ast_tryconnect(void)
1404 {
1405         struct sockaddr_un sunaddr;
1406         int res;
1407         ast_consock = socket(PF_LOCAL, SOCK_STREAM, 0);
1408         if (ast_consock < 0) {
1409                 ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
1410                 return 0;
1411         }
1412         memset(&sunaddr, 0, sizeof(sunaddr));
1413         sunaddr.sun_family = AF_LOCAL;
1414         ast_copy_string(sunaddr.sun_path, ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
1415         res = connect(ast_consock, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
1416         if (res) {
1417                 close(ast_consock);
1418                 ast_consock = -1;
1419                 return 0;
1420         } else
1421                 return 1;
1422 }
1423
1424 /*! \brief Urgent handler
1425
1426  Called by soft_hangup to interrupt the poll, read, or other
1427  system call.  We don't actually need to do anything though.  
1428  Remember: Cannot EVER ast_log from within a signal handler 
1429  */
1430 static void urg_handler(int num)
1431 {
1432         signal(num, urg_handler);
1433         return;
1434 }
1435
1436 static void hup_handler(int num)
1437 {
1438         int a = 0;
1439         if (option_verbose > 1) 
1440                 printf("Received HUP signal -- Reloading configs\n");
1441         if (restartnow)
1442                 execvp(_argv[0], _argv);
1443         sig_flags.need_reload = 1;
1444         if (sig_alert_pipe[1] != -1) {
1445                 if (write(sig_alert_pipe[1], &a, sizeof(a)) < 0) {
1446                         fprintf(stderr, "hup_handler: write() failed: %s\n", strerror(errno));
1447                 }
1448         }
1449         signal(num, hup_handler);
1450 }
1451
1452 static void child_handler(int sig)
1453 {
1454         /* Must not ever ast_log or ast_verbose within signal handler */
1455         int n, status;
1456
1457         /*
1458          * Reap all dead children -- not just one
1459          */
1460         for (n = 0; wait4(-1, &status, WNOHANG, NULL) > 0; n++)
1461                 ;
1462         if (n == 0 && option_debug)     
1463                 printf("Huh?  Child handler, but nobody there?\n");
1464         signal(sig, child_handler);
1465 }
1466
1467 /*! \brief Set maximum open files */
1468 static void set_ulimit(int value)
1469 {
1470         struct rlimit l = {0, 0};
1471         
1472         if (value <= 0) {
1473                 ast_log(LOG_WARNING, "Unable to change max files open to invalid value %i\n",value);
1474                 return;
1475         }
1476         
1477         l.rlim_cur = value;
1478         l.rlim_max = value;
1479         
1480         if (setrlimit(RLIMIT_NOFILE, &l)) {
1481                 ast_log(LOG_WARNING, "Unable to disable core size resource limit: %s\n",strerror(errno));
1482                 return;
1483         }
1484         
1485         ast_log(LOG_NOTICE, "Setting max files open to %d\n",value);
1486         
1487         return;
1488 }
1489
1490 /*! \brief Set an X-term or screen title */
1491 static void set_title(char *text)
1492 {
1493         if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
1494                 fprintf(stdout, "\033]2;%s\007", text);
1495 }
1496
1497 static void set_icon(char *text)
1498 {
1499         if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
1500                 fprintf(stdout, "\033]1;%s\007", text);
1501 }
1502
1503 /*! \brief We set ourselves to a high priority, that we might pre-empt everything
1504    else.  If your PBX has heavy activity on it, this is a good thing.  */
1505 int ast_set_priority(int pri)
1506 {
1507         struct sched_param sched;
1508         memset(&sched, 0, sizeof(sched));
1509 #ifdef __linux__
1510         if (pri) {  
1511                 sched.sched_priority = 10;
1512                 if (sched_setscheduler(0, SCHED_RR, &sched)) {
1513                         ast_log(LOG_WARNING, "Unable to set high priority\n");
1514                         return -1;
1515                 } else
1516                         if (option_verbose)
1517                                 ast_verbose("Set to realtime thread\n");
1518         } else {
1519                 sched.sched_priority = 0;
1520                 /* According to the manpage, these parameters can never fail. */
1521                 sched_setscheduler(0, SCHED_OTHER, &sched);
1522         }
1523 #else
1524         if (pri) {
1525                 if (setpriority(PRIO_PROCESS, 0, -10) == -1) {
1526                         ast_log(LOG_WARNING, "Unable to set high priority\n");
1527                         return -1;
1528                 } else
1529                         if (option_verbose)
1530                                 ast_verbose("Set to high priority\n");
1531         } else {
1532                 /* According to the manpage, these parameters can never fail. */
1533                 setpriority(PRIO_PROCESS, 0, 0);
1534         }
1535 #endif
1536         return 0;
1537 }
1538
1539 static void ast_run_atexits(void)
1540 {
1541         struct ast_atexit *ae;
1542         AST_RWLIST_RDLOCK(&atexits);
1543         AST_RWLIST_TRAVERSE(&atexits, ae, list) {
1544                 if (ae->func) 
1545                         ae->func();
1546         }
1547         AST_RWLIST_UNLOCK(&atexits);
1548 }
1549
1550 static void quit_handler(int num, int niceness, int safeshutdown, int restart)
1551 {
1552         char filename[80] = "";
1553         time_t s,e;
1554         int x;
1555         /* Try to get as many CDRs as possible submitted to the backend engines (if in batch mode) */
1556         ast_cdr_engine_term();
1557         if (safeshutdown) {
1558                 shuttingdown = 1;
1559                 if (!niceness) {
1560                         /* Begin shutdown routine, hanging up active channels */
1561                         ast_begin_shutdown(1);
1562                         if (option_verbose && ast_opt_console)
1563                                 ast_verbose("Beginning asterisk %s....\n", restart ? "restart" : "shutdown");
1564                         time(&s);
1565                         for (;;) {
1566                                 time(&e);
1567                                 /* Wait up to 15 seconds for all channels to go away */
1568                                 if ((e - s) > 15)
1569                                         break;
1570                                 if (!ast_active_channels())
1571                                         break;
1572                                 if (!shuttingdown)
1573                                         break;
1574                                 /* Sleep 1/10 of a second */
1575                                 usleep(100000);
1576                         }
1577                 } else {
1578                         if (niceness < 2)
1579                                 ast_begin_shutdown(0);
1580                         if (option_verbose && ast_opt_console)
1581                                 ast_verbose("Waiting for inactivity to perform %s...\n", restart ? "restart" : "halt");
1582                         for (;;) {
1583                                 if (!ast_active_channels())
1584                                         break;
1585                                 if (!shuttingdown)
1586                                         break;
1587                                 sleep(1);
1588                         }
1589                 }
1590
1591                 if (!shuttingdown) {
1592                         if (option_verbose && ast_opt_console)
1593                                 ast_verbose("Asterisk %s cancelled.\n", restart ? "restart" : "shutdown");
1594                         return;
1595                 }
1596
1597                 if (niceness)
1598                         ast_module_shutdown();
1599         }
1600         if (ast_opt_console || (ast_opt_remote && !ast_opt_exec)) {
1601                 if (getenv("HOME")) 
1602                         snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
1603                 if (!ast_strlen_zero(filename))
1604                         ast_el_write_history(filename);
1605                 if (el != NULL)
1606                         el_end(el);
1607                 if (el_hist != NULL)
1608                         history_end(el_hist);
1609         }
1610         if (option_verbose)
1611                 ast_verbose("Executing last minute cleanups\n");
1612         ast_run_atexits();
1613         /* Called on exit */
1614         if (option_verbose && ast_opt_console)
1615                 ast_verbose("Asterisk %s ending (%d).\n", ast_active_channels() ? "uncleanly" : "cleanly", num);
1616         ast_debug(1, "Asterisk ending (%d).\n", num);
1617         manager_event(EVENT_FLAG_SYSTEM, "Shutdown", "Shutdown: %s\r\nRestart: %s\r\n", ast_active_channels() ? "Uncleanly" : "Cleanly", restart ? "True" : "False");
1618         if (ast_socket > -1) {
1619                 pthread_cancel(lthread);
1620                 close(ast_socket);
1621                 ast_socket = -1;
1622                 unlink(ast_config_AST_SOCKET);
1623         }
1624         if (ast_consock > -1)
1625                 close(ast_consock);
1626         if (!ast_opt_remote)
1627                 unlink(ast_config_AST_PID);
1628         printf("%s", term_quit());
1629         if (restart) {
1630                 if (option_verbose || ast_opt_console)
1631                         ast_verbose("Preparing for Asterisk restart...\n");
1632                 /* Mark all FD's for closing on exec */
1633                 for (x=3; x < 32768; x++) {
1634                         fcntl(x, F_SETFD, FD_CLOEXEC);
1635                 }
1636                 if (option_verbose || ast_opt_console)
1637                         ast_verbose("Asterisk is now restarting...\n");
1638                 restartnow = 1;
1639
1640                 /* close logger */
1641                 close_logger();
1642
1643                 /* If there is a consolethread running send it a SIGHUP 
1644                    so it can execvp, otherwise we can do it ourselves */
1645                 if ((consolethread != AST_PTHREADT_NULL) && (consolethread != pthread_self())) {
1646                         pthread_kill(consolethread, SIGHUP);
1647                         /* Give the signal handler some time to complete */
1648                         sleep(2);
1649                 } else
1650                         execvp(_argv[0], _argv);
1651         
1652         } else {
1653                 /* close logger */
1654                 close_logger();
1655         }
1656         exit(0);
1657 }
1658
1659 static void __quit_handler(int num)
1660 {
1661         int a = 0;
1662         sig_flags.need_quit = 1;
1663         if (sig_alert_pipe[1] != -1) {
1664                 if (write(sig_alert_pipe[1], &a, sizeof(a)) < 0) {
1665                         fprintf(stderr, "hup_handler: write() failed: %s\n", strerror(errno));
1666                 }
1667         }
1668         /* There is no need to restore the signal handler here, since the app
1669          * is going to exit */
1670 }
1671
1672 static void __remote_quit_handler(int num)
1673 {
1674         sig_flags.need_quit = 1;
1675 }
1676
1677 static const char *fix_header(char *outbuf, int maxout, const char *s, char *cmp)
1678 {
1679         const char *c;
1680
1681         /* Check for verboser preamble */
1682         if (*s == 127) {
1683                 s++;
1684         }
1685
1686         if (!strncmp(s, cmp, strlen(cmp))) {
1687                 c = s + strlen(cmp);
1688                 term_color(outbuf, cmp, COLOR_GRAY, 0, maxout);
1689                 return c;
1690         }
1691         return NULL;
1692 }
1693
1694 static void console_verboser(const char *s)
1695 {
1696         char tmp[80];
1697         const char *c = NULL;
1698
1699         if ((c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_4)) ||
1700             (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_3)) ||
1701             (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_2)) ||
1702             (c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_1))) {
1703                 fputs(tmp, stdout);
1704                 fputs(c, stdout);
1705         } else {
1706                 if (*s == 127) {
1707                         s++;
1708                 }
1709                 fputs(s, stdout);
1710         }
1711
1712         fflush(stdout);
1713         
1714         /* Wake up a poll()ing console */
1715         if (ast_opt_console && consolethread != AST_PTHREADT_NULL)
1716                 pthread_kill(consolethread, SIGURG);
1717 }
1718
1719 static int ast_all_zeros(char *s)
1720 {
1721         while (*s) {
1722                 if (*s > 32)
1723                         return 0;
1724                 s++;  
1725         }
1726         return 1;
1727 }
1728
1729 static void consolehandler(char *s)
1730 {
1731         printf("%s", term_end());
1732         fflush(stdout);
1733
1734         /* Called when readline data is available */
1735         if (!ast_all_zeros(s))
1736                 ast_el_add_history(s);
1737         /* The real handler for bang */
1738         if (s[0] == '!') {
1739                 if (s[1])
1740                         ast_safe_system(s+1);
1741                 else
1742                         ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
1743         } else 
1744                 ast_cli_command(STDOUT_FILENO, s);
1745 }
1746
1747 static int remoteconsolehandler(char *s)
1748 {
1749         int ret = 0;
1750
1751         /* Called when readline data is available */
1752         if (!ast_all_zeros(s))
1753                 ast_el_add_history(s);
1754         /* The real handler for bang */
1755         if (s[0] == '!') {
1756                 if (s[1])
1757                         ast_safe_system(s+1);
1758                 else
1759                         ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
1760                 ret = 1;
1761         }
1762         if ((strncasecmp(s, "quit", 4) == 0 || strncasecmp(s, "exit", 4) == 0) &&
1763             (s[4] == '\0' || isspace(s[4]))) {
1764                 quit_handler(0, 0, 0, 0);
1765                 ret = 1;
1766         }
1767
1768         return ret;
1769 }
1770
1771 static char *handle_version(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1772 {
1773         switch (cmd) {
1774         case CLI_INIT:
1775                 e->command = "core show version";
1776                 e->usage = 
1777                         "Usage: core show version\n"
1778                         "       Shows Asterisk version information.\n";
1779                 return NULL;
1780         case CLI_GENERATE:
1781                 return NULL;
1782         }
1783
1784         if (a->argc != 3)
1785                 return CLI_SHOWUSAGE;
1786         ast_cli(a->fd, "Asterisk %s built by %s @ %s on a %s running %s on %s\n",
1787                 ast_get_version(), ast_build_user, ast_build_hostname,
1788                 ast_build_machine, ast_build_os, ast_build_date);
1789         return CLI_SUCCESS;
1790 }
1791
1792 #if 0
1793 static int handle_quit(int fd, int argc, char *argv[])
1794 {
1795         if (argc != 1)
1796                 return RESULT_SHOWUSAGE;
1797         quit_handler(0, 0, 1, 0);
1798         return RESULT_SUCCESS;
1799 }
1800 #endif
1801
1802 static char *handle_stop_now(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1803 {
1804         switch (cmd) {
1805         case CLI_INIT:
1806                 e->command = "core stop now";
1807                 e->usage = 
1808                         "Usage: core stop now\n"
1809                         "       Shuts down a running Asterisk immediately, hanging up all active calls .\n";
1810                 return NULL;
1811         case CLI_GENERATE:
1812                 return NULL;
1813         }
1814
1815         if (a->argc != e->args)
1816                 return CLI_SHOWUSAGE;
1817         quit_handler(0, 0 /* Not nice */, 1 /* safely */, 0 /* not restart */);
1818         return CLI_SUCCESS;
1819 }
1820
1821 static char *handle_stop_gracefully(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1822 {
1823         switch (cmd) {
1824         case CLI_INIT:
1825                 e->command = "core stop gracefully";
1826                 e->usage = 
1827                         "Usage: core stop gracefully\n"
1828                         "       Causes Asterisk to not accept new calls, and exit when all\n"
1829                         "       active calls have terminated normally.\n";
1830                 return NULL;
1831         case CLI_GENERATE:
1832                 return NULL;
1833         }
1834
1835         if (a->argc != e->args)
1836                 return CLI_SHOWUSAGE;
1837         quit_handler(0, 1 /* nicely */, 1 /* safely */, 0 /* no restart */);
1838         return CLI_SUCCESS;
1839 }
1840
1841 static char *handle_stop_when_convenient(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1842 {
1843         switch (cmd) {
1844         case CLI_INIT:
1845                 e->command = "core stop when convenient";
1846                 e->usage = 
1847                         "Usage: core stop when convenient\n"
1848                         "       Causes Asterisk to perform a shutdown when all active calls have ended.\n";
1849                 return NULL;
1850         case CLI_GENERATE:
1851                 return NULL;
1852         }
1853
1854         if (a->argc != e->args)
1855                 return CLI_SHOWUSAGE;
1856         ast_cli(a->fd, "Waiting for inactivity to perform halt\n");
1857         quit_handler(0, 2 /* really nicely */, 1 /* safely */, 0 /* don't restart */);
1858         return CLI_SUCCESS;
1859 }
1860
1861 static char *handle_restart_now(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1862 {
1863         switch (cmd) {
1864         case CLI_INIT:
1865                 e->command = "core restart now";
1866                 e->usage = 
1867                         "Usage: core restart now\n"
1868                         "       Causes Asterisk to hangup all calls and exec() itself performing a cold\n"
1869                         "       restart.\n";
1870                 return NULL;
1871         case CLI_GENERATE:
1872                 return NULL;
1873         }
1874
1875         if (a->argc != e->args)
1876                 return CLI_SHOWUSAGE;
1877         quit_handler(0, 0 /* not nicely */, 1 /* safely */, 1 /* restart */);
1878         return CLI_SUCCESS;
1879 }
1880
1881 static char *handle_restart_gracefully(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1882 {
1883         switch (cmd) {
1884         case CLI_INIT:
1885                 e->command = "core restart gracefully";
1886                 e->usage = 
1887                         "Usage: core restart gracefully\n"
1888                         "       Causes Asterisk to stop accepting new calls and exec() itself performing a cold\n"
1889                         "       restart when all active calls have ended.\n";
1890                 return NULL;
1891         case CLI_GENERATE:
1892                 return NULL;
1893         }
1894
1895         if (a->argc != e->args)
1896                 return CLI_SHOWUSAGE;
1897         quit_handler(0, 1 /* nicely */, 1 /* safely */, 1 /* restart */);
1898         return CLI_SUCCESS;
1899 }
1900
1901 static char *handle_restart_when_convenient(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1902 {
1903         switch (cmd) {
1904         case CLI_INIT:
1905                 e->command = "core restart when convenient";
1906                 e->usage = 
1907                         "Usage: core restart when convenient\n"
1908                         "       Causes Asterisk to perform a cold restart when all active calls have ended.\n";
1909                 return NULL;
1910         case CLI_GENERATE:
1911                 return NULL;
1912         }
1913
1914         if (a->argc != e->args)
1915                 return CLI_SHOWUSAGE;
1916         ast_cli(a->fd, "Waiting for inactivity to perform restart\n");
1917         quit_handler(0, 2 /* really nicely */, 1 /* safely */, 1 /* restart */);
1918         return CLI_SUCCESS;
1919 }
1920
1921 static char *handle_abort_shutdown(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1922 {
1923         switch (cmd) {
1924         case CLI_INIT:
1925                 e->command = "core abort shutdown";
1926                 e->usage = 
1927                         "Usage: core abort shutdown\n"
1928                         "       Causes Asterisk to abort an executing shutdown or restart, and resume normal\n"
1929                         "       call operations.\n";
1930                 return NULL;
1931         case CLI_GENERATE:
1932                 return NULL;
1933         }
1934
1935         if (a->argc != e->args)
1936                 return CLI_SHOWUSAGE;
1937         ast_cancel_shutdown();
1938         shuttingdown = 0;
1939         return CLI_SUCCESS;
1940 }
1941
1942 static char *handle_bang(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1943 {
1944         switch (cmd) {
1945         case CLI_INIT:
1946                 e->command = "!";
1947                 e->usage = 
1948                         "Usage: !<command>\n"
1949                         "       Executes a given shell command\n";
1950                 return NULL;
1951         case CLI_GENERATE:
1952                 return NULL;
1953         }
1954
1955         return CLI_SUCCESS;
1956 }
1957 static const char warranty_lines[] = {
1958         "\n"
1959         "                           NO WARRANTY\n"
1960         "\n"
1961         "BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY\n"
1962         "FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN\n"
1963         "OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES\n"
1964         "PROVIDE THE PROGRAM \"AS IS\" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED\n"
1965         "OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\n"
1966         "MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS\n"
1967         "TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE\n"
1968         "PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,\n"
1969         "REPAIR OR CORRECTION.\n"
1970         "\n"
1971         "IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING\n"
1972         "WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR\n"
1973         "REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,\n"
1974         "INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING\n"
1975         "OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED\n"
1976         "TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY\n"
1977         "YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER\n"
1978         "PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE\n"
1979         "POSSIBILITY OF SUCH DAMAGES.\n"
1980 };
1981
1982 static char *show_warranty(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1983 {
1984         switch (cmd) {
1985         case CLI_INIT:
1986                 e->command = "core show warranty";
1987                 e->usage = 
1988                         "Usage: core show warranty\n"
1989                         "       Shows the warranty (if any) for this copy of Asterisk.\n";
1990                 return NULL;
1991         case CLI_GENERATE:
1992                 return NULL;
1993         }
1994
1995         ast_cli(a->fd, "%s", warranty_lines);
1996
1997         return CLI_SUCCESS;
1998 }
1999
2000 static const char license_lines[] = {
2001         "\n"
2002         "This program is free software; you can redistribute it and/or modify\n"
2003         "it under the terms of the GNU General Public License version 2 as\n"
2004         "published by the Free Software Foundation.\n"
2005         "\n"
2006         "This program also contains components licensed under other licenses.\n"
2007         "They include:\n"
2008         "\n"
2009         "This program is distributed in the hope that it will be useful,\n"
2010         "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
2011         "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
2012         "GNU General Public License for more details.\n"
2013         "\n"
2014         "You should have received a copy of the GNU General Public License\n"
2015         "along with this program; if not, write to the Free Software\n"
2016         "Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\n"
2017 };
2018
2019 static char *show_license(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2020 {
2021         switch (cmd) {
2022         case CLI_INIT:
2023                 e->command = "core show license";
2024                 e->usage = 
2025                         "Usage: core show license\n"
2026                         "       Shows the license(s) for this copy of Asterisk.\n";
2027                 return NULL;
2028         case CLI_GENERATE:
2029                 return NULL;
2030         }
2031
2032         ast_cli(a->fd, "%s", license_lines);
2033
2034         return CLI_SUCCESS;
2035 }
2036
2037 #define ASTERISK_PROMPT "*CLI> "
2038
2039 #define ASTERISK_PROMPT2 "%s*CLI> "
2040
2041 static struct ast_cli_entry cli_asterisk[] = {
2042         AST_CLI_DEFINE(handle_abort_shutdown, "Cancel a running shutdown"),
2043         AST_CLI_DEFINE(handle_stop_now, "Shut down Asterisk immediately"),
2044         AST_CLI_DEFINE(handle_stop_gracefully, "Gracefully shut down Asterisk"),
2045         AST_CLI_DEFINE(handle_stop_when_convenient, "Shut down Asterisk at empty call volume"),
2046         AST_CLI_DEFINE(handle_restart_now, "Restart Asterisk immediately"), 
2047         AST_CLI_DEFINE(handle_restart_gracefully, "Restart Asterisk gracefully"),
2048         AST_CLI_DEFINE(handle_restart_when_convenient, "Restart Asterisk at empty call volume"),
2049         AST_CLI_DEFINE(show_warranty, "Show the warranty (if any) for this copy of Asterisk"),
2050         AST_CLI_DEFINE(show_license, "Show the license(s) for this copy of Asterisk"),
2051         AST_CLI_DEFINE(handle_version, "Display version info"),
2052         AST_CLI_DEFINE(handle_bang, "Execute a shell command"),
2053 #if !defined(LOW_MEMORY)
2054         AST_CLI_DEFINE(handle_show_version_files, "List versions of files used to build Asterisk"),
2055         AST_CLI_DEFINE(handle_show_threads, "Show running threads"),
2056 #if defined(HAVE_SYSINFO) || defined(HAVE_SYSCTL)
2057         AST_CLI_DEFINE(handle_show_sysinfo, "Show System Information"),
2058 #endif
2059         AST_CLI_DEFINE(handle_show_profile, "Display profiling info"),
2060         AST_CLI_DEFINE(handle_show_settings, "Show some core settings"),
2061         AST_CLI_DEFINE(handle_clear_profile, "Clear profiling info"),
2062 #endif /* ! LOW_MEMORY */
2063 };
2064
2065 static int ast_el_read_char(EditLine *editline, char *cp)
2066 {
2067         int num_read = 0;
2068         int lastpos = 0;
2069         struct pollfd fds[2];
2070         int res;
2071         int max;
2072 #define EL_BUF_SIZE 512
2073         char buf[EL_BUF_SIZE];
2074
2075         for (;;) {
2076                 max = 1;
2077                 fds[0].fd = ast_consock;
2078                 fds[0].events = POLLIN;
2079                 if (!ast_opt_exec) {
2080                         fds[1].fd = STDIN_FILENO;
2081                         fds[1].events = POLLIN;
2082                         max++;
2083                 }
2084                 res = poll(fds, max, -1);
2085                 if (res < 0) {
2086                         if (sig_flags.need_quit)
2087                                 break;
2088                         if (errno == EINTR)
2089                                 continue;
2090                         ast_log(LOG_ERROR, "poll failed: %s\n", strerror(errno));
2091                         break;
2092                 }
2093
2094                 if (!ast_opt_exec && fds[1].revents) {
2095                         num_read = read(STDIN_FILENO, cp, 1);
2096                         if (num_read < 1) {
2097                                 break;
2098                         } else 
2099                                 return (num_read);
2100                 }
2101                 if (fds[0].revents) {
2102                         char *tmp;
2103                         res = read(ast_consock, buf, sizeof(buf) - 1);
2104                         /* if the remote side disappears exit */
2105                         if (res < 1) {
2106                                 fprintf(stderr, "\nDisconnected from Asterisk server\n");
2107                                 if (!ast_opt_reconnect) {
2108                                         quit_handler(0, 0, 0, 0);
2109                                 } else {
2110                                         int tries;
2111                                         int reconnects_per_second = 20;
2112                                         fprintf(stderr, "Attempting to reconnect for 30 seconds\n");
2113                                         for (tries = 0; tries < 30 * reconnects_per_second; tries++) {
2114                                                 if (ast_tryconnect()) {
2115                                                         fprintf(stderr, "Reconnect succeeded after %.3f seconds\n", 1.0 / reconnects_per_second * tries);
2116                                                         printf("%s", term_quit());
2117                                                         WELCOME_MESSAGE;
2118                                                         if (!ast_opt_mute)
2119                                                                 fdsend(ast_consock, "logger mute silent");
2120                                                         else 
2121                                                                 printf("log and verbose output currently muted ('logger mute' to unmute)\n");
2122                                                         break;
2123                                                 } else
2124                                                         usleep(1000000 / reconnects_per_second);
2125                                         }
2126                                         if (tries >= 30 * reconnects_per_second) {
2127                                                 fprintf(stderr, "Failed to reconnect for 30 seconds.  Quitting.\n");
2128                                                 quit_handler(0, 0, 0, 0);
2129                                         }
2130                                 }
2131                         }
2132
2133                         buf[res] = '\0';
2134
2135                         /* Strip preamble from asynchronous events, too */
2136                         for (tmp = buf; *tmp; tmp++) {
2137                                 if (*tmp == 127) {
2138                                         memmove(tmp, tmp + 1, strlen(tmp));
2139                                         tmp--;
2140                                         res--;
2141                                 }
2142                         }
2143
2144                         /* Write over the CLI prompt */
2145                         if (!ast_opt_exec && !lastpos) {
2146                                 if (write(STDOUT_FILENO, "\r", 1) < 0) {
2147                                 }
2148                         }
2149                         if (write(STDOUT_FILENO, buf, res) < 0) {
2150                         }
2151                         if ((res < EL_BUF_SIZE - 1) && ((buf[res-1] == '\n') || (buf[res-2] == '\n'))) {
2152                                 *cp = CC_REFRESH;
2153                                 return(1);
2154                         } else
2155                                 lastpos = 1;
2156                 }
2157         }
2158
2159         *cp = '\0';
2160         return (0);
2161 }
2162
2163 static struct ast_str *prompt = NULL;
2164
2165 static char *cli_prompt(EditLine *editline)
2166 {
2167         char tmp[100];
2168         char *pfmt;
2169         int color_used = 0;
2170         static int cli_prompt_changes = 0;
2171         char term_code[20];
2172         struct passwd *pw;
2173         struct group *gr;
2174
2175         if (prompt == NULL) {
2176                 prompt = ast_str_create(100);
2177         } else if (!cli_prompt_changes) {
2178                 return ast_str_buffer(prompt);
2179         } else {
2180                 ast_str_reset(prompt);
2181         }
2182
2183         if ((pfmt = getenv("ASTERISK_PROMPT"))) {
2184                 char *t = pfmt;
2185                 struct timeval ts = ast_tvnow();
2186                 while (*t != '\0') {
2187                         if (*t == '%') {
2188                                 char hostname[MAXHOSTNAMELEN] = "";
2189                                 int i, which;
2190                                 struct ast_tm tm = { 0, };
2191                                 int fgcolor = COLOR_WHITE, bgcolor = COLOR_BLACK;
2192
2193                                 t++;
2194                                 switch (*t) {
2195                                 case 'C': /* color */
2196                                         t++;
2197                                         if (sscanf(t, "%d;%d%n", &fgcolor, &bgcolor, &i) == 2) {
2198                                                 ast_str_append(&prompt, 0, "%s", term_color_code(term_code, fgcolor, bgcolor, sizeof(term_code)));
2199                                                 t += i - 1;
2200                                         } else if (sscanf(t, "%d%n", &fgcolor, &i) == 1) {
2201                                                 ast_str_append(&prompt, 0, "%s", term_color_code(term_code, fgcolor, 0, sizeof(term_code)));
2202                                                 t += i - 1;
2203                                         }
2204
2205                                         /* If the color has been reset correctly, then there's no need to reset it later */
2206                                         color_used = ((fgcolor == COLOR_WHITE) && (bgcolor == COLOR_BLACK)) ? 0 : 1;
2207                                         break;
2208                                 case 'd': /* date */
2209                                         if (ast_localtime(&ts, &tm, NULL)) {
2210                                                 ast_strftime(tmp, sizeof(tmp), "%Y-%m-%d", &tm);
2211                                                 ast_str_append(&prompt, 0, "%s", tmp);
2212                                                 cli_prompt_changes++;
2213                                         }
2214                                         break;
2215                                 case 'g': /* group */
2216                                         if ((gr = getgrgid(getgid()))) {
2217                                                 ast_str_append(&prompt, 0, "%s", gr->gr_name);
2218                                         }
2219                                         break;
2220                                 case 'h': /* hostname */
2221                                         if (!gethostname(hostname, sizeof(hostname) - 1)) {
2222                                                 ast_str_append(&prompt, 0, "%s", hostname);
2223                                         } else {
2224                                                 ast_str_append(&prompt, 0, "%s", "localhost");
2225                                         }
2226                                         break;
2227                                 case 'H': /* short hostname */
2228                                         if (!gethostname(hostname, sizeof(hostname) - 1)) {
2229                                                 char *dotptr;
2230                                                 if ((dotptr = strchr(hostname, '.'))) {
2231                                                         *dotptr = '\0';
2232                                                 }
2233                                                 ast_str_append(&prompt, 0, "%s", hostname);
2234                                         } else {
2235                                                 ast_str_append(&prompt, 0, "%s", "localhost");
2236                                         }
2237                                         break;
2238 #ifdef HAVE_GETLOADAVG
2239                                 case 'l': /* load avg */
2240                                         t++;
2241                                         if (sscanf(t, "%d", &which) == 1 && which > 0 && which <= 3) {
2242                                                 double list[3];
2243                                                 getloadavg(list, 3);
2244                                                 ast_str_append(&prompt, 0, "%.2f", list[which - 1]);
2245                                                 cli_prompt_changes++;
2246                                         }
2247                                         break;
2248 #endif
2249                                 case 's': /* Asterisk system name (from asterisk.conf) */
2250                                         ast_str_append(&prompt, 0, "%s", ast_config_AST_SYSTEM_NAME);
2251                                         break;
2252                                 case 't': /* time */
2253                                         if (ast_localtime(&ts, &tm, NULL)) {
2254                                                 ast_strftime(tmp, sizeof(tmp), "%H:%M:%S", &tm);
2255                                                 ast_str_append(&prompt, 0, "%s", tmp);
2256                                                 cli_prompt_changes++;
2257                                         }
2258                                         break;
2259                                 case 'u': /* username */
2260                                         if ((pw = getpwuid(getuid()))) {
2261                                                 ast_str_append(&prompt, 0, "%s", pw->pw_name);
2262                                         }
2263                                         break;
2264                                 case '#': /* process console or remote? */
2265                                         ast_str_append(&prompt, 0, "%c", ast_opt_remote ? '>' : '#');
2266                                         break;
2267                                 case '%': /* literal % */
2268                                         ast_str_append(&prompt, 0, "%c", '%');
2269                                         break;
2270                                 case '\0': /* % is last character - prevent bug */
2271                                         t--;
2272                                         break;
2273                                 }
2274                         } else {
2275                                 ast_str_append(&prompt, 0, "%c", *t);
2276                         }
2277                         t++;
2278                 }
2279                 if (color_used) {
2280                         /* Force colors back to normal at end */
2281                         ast_str_append(&prompt, 0, "%s", term_color_code(term_code, 0, 0, sizeof(term_code)));
2282                 }
2283         } else if (remotehostname) {
2284                 ast_str_set(&prompt, 0, ASTERISK_PROMPT2, remotehostname);
2285         } else {
2286                 ast_str_set(&prompt, 0, "%s", ASTERISK_PROMPT);
2287         }
2288
2289         return ast_str_buffer(prompt);  
2290 }
2291
2292 static char **ast_el_strtoarr(char *buf)
2293 {
2294         char **match_list = NULL, **match_list_tmp, *retstr;
2295         size_t match_list_len;
2296         int matches = 0;
2297
2298         match_list_len = 1;
2299         while ( (retstr = strsep(&buf, " ")) != NULL) {
2300
2301                 if (!strcmp(retstr, AST_CLI_COMPLETE_EOF))
2302                         break;
2303                 if (matches + 1 >= match_list_len) {
2304                         match_list_len <<= 1;
2305                         if ((match_list_tmp = ast_realloc(match_list, match_list_len * sizeof(char *)))) {
2306                                 match_list = match_list_tmp;
2307                         } else {
2308                                 if (match_list)
2309                                         ast_free(match_list);
2310                                 return (char **) NULL;
2311                         }
2312                 }
2313
2314                 match_list[matches++] = ast_strdup(retstr);
2315         }
2316
2317         if (!match_list)
2318                 return (char **) NULL;
2319
2320         if (matches >= match_list_len) {
2321                 if ((match_list_tmp = ast_realloc(match_list, (match_list_len + 1) * sizeof(char *)))) {
2322                         match_list = match_list_tmp;
2323                 } else {
2324                         if (match_list)
2325                                 ast_free(match_list);
2326                         return (char **) NULL;
2327                 }
2328         }
2329
2330         match_list[matches] = (char *) NULL;
2331
2332         return match_list;
2333 }
2334
2335 static int ast_el_sort_compare(const void *i1, const void *i2)
2336 {
2337         char *s1, *s2;
2338
2339         s1 = ((char **)i1)[0];
2340         s2 = ((char **)i2)[0];
2341
2342         return strcasecmp(s1, s2);
2343 }
2344
2345 static int ast_cli_display_match_list(char **matches, int len, int max)
2346 {
2347         int i, idx, limit, count;
2348         int screenwidth = 0;
2349         int numoutput = 0, numoutputline = 0;
2350
2351         screenwidth = ast_get_termcols(STDOUT_FILENO);
2352
2353         /* find out how many entries can be put on one line, with two spaces between strings */
2354         limit = screenwidth / (max + 2);
2355         if (limit == 0)
2356                 limit = 1;
2357
2358         /* how many lines of output */
2359         count = len / limit;
2360         if (count * limit < len)
2361                 count++;
2362
2363         idx = 1;
2364
2365         qsort(&matches[0], (size_t)(len), sizeof(char *), ast_el_sort_compare);
2366
2367         for (; count > 0; count--) {
2368                 numoutputline = 0;
2369                 for (i = 0; i < limit && matches[idx]; i++, idx++) {
2370
2371                         /* Don't print dupes */
2372                         if ( (matches[idx+1] != NULL && strcmp(matches[idx], matches[idx+1]) == 0 ) ) {
2373                                 i--;
2374                                 ast_free(matches[idx]);
2375                                 matches[idx] = NULL;
2376                                 continue;
2377                         }
2378
2379                         numoutput++;
2380                         numoutputline++;
2381                         fprintf(stdout, "%-*s  ", max, matches[idx]);
2382                         ast_free(matches[idx]);
2383                         matches[idx] = NULL;
2384                 }
2385                 if (numoutputline > 0)
2386                         fprintf(stdout, "\n");
2387         }
2388
2389         return numoutput;
2390 }
2391
2392
2393 static char *cli_complete(EditLine *editline, int ch)
2394 {
2395         int len = 0;
2396         char *ptr;
2397         int nummatches = 0;
2398         char **matches;
2399         int retval = CC_ERROR;
2400         char buf[2048];
2401         int res;
2402
2403         LineInfo *lf = (LineInfo *)el_line(editline);
2404
2405         *(char *)lf->cursor = '\0';
2406         ptr = (char *)lf->cursor;
2407         if (ptr) {
2408                 while (ptr > lf->buffer) {
2409                         if (isspace(*ptr)) {
2410                                 ptr++;
2411                                 break;
2412                         }
2413                         ptr--;
2414                 }
2415         }
2416
2417         len = lf->cursor - ptr;
2418
2419         if (ast_opt_remote) {
2420                 snprintf(buf, sizeof(buf), "_COMMAND NUMMATCHES \"%s\" \"%s\"", lf->buffer, ptr); 
2421                 fdsend(ast_consock, buf);
2422                 res = read(ast_consock, buf, sizeof(buf));
2423                 buf[res] = '\0';
2424                 nummatches = atoi(buf);
2425
2426                 if (nummatches > 0) {
2427                         char *mbuf;
2428                         int mlen = 0, maxmbuf = 2048;
2429                         /* Start with a 2048 byte buffer */                     
2430                         if (!(mbuf = ast_malloc(maxmbuf)))
2431                                 return (char *)(CC_ERROR);
2432                         snprintf(buf, sizeof(buf), "_COMMAND MATCHESARRAY \"%s\" \"%s\"", lf->buffer, ptr); 
2433                         fdsend(ast_consock, buf);
2434                         res = 0;
2435                         mbuf[0] = '\0';
2436                         while (!strstr(mbuf, AST_CLI_COMPLETE_EOF) && res != -1) {
2437                                 if (mlen + 1024 > maxmbuf) {
2438                                         /* Every step increment buffer 1024 bytes */
2439                                         maxmbuf += 1024;                                        
2440                                         if (!(mbuf = ast_realloc(mbuf, maxmbuf)))
2441                                                 return (char *)(CC_ERROR);
2442                                 }
2443                                 /* Only read 1024 bytes at a time */
2444                                 res = read(ast_consock, mbuf + mlen, 1024);
2445                                 if (res > 0)
2446                                         mlen += res;
2447                         }
2448                         mbuf[mlen] = '\0';
2449
2450                         matches = ast_el_strtoarr(mbuf);
2451                         ast_free(mbuf);
2452                 } else
2453                         matches = (char **) NULL;
2454         } else {
2455                 char **p, *oldbuf=NULL;
2456                 nummatches = 0;
2457                 matches = ast_cli_completion_matches((char *)lf->buffer,ptr);
2458                 for (p = matches; p && *p; p++) {
2459                         if (!oldbuf || strcmp(*p,oldbuf))
2460                                 nummatches++;
2461                         oldbuf = *p;
2462                 }
2463         }
2464
2465         if (matches) {
2466                 int i;
2467                 int matches_num, maxlen, match_len;
2468
2469                 if (matches[0][0] != '\0') {
2470                         el_deletestr(editline, (int) len);
2471                         el_insertstr(editline, matches[0]);
2472                         retval = CC_REFRESH;
2473                 }
2474
2475                 if (nummatches == 1) {
2476                         /* Found an exact match */
2477                         el_insertstr(editline, " ");
2478                         retval = CC_REFRESH;
2479                 } else {
2480                         /* Must be more than one match */
2481                         for (i = 1, maxlen = 0; matches[i]; i++) {
2482                                 match_len = strlen(matches[i]);
2483                                 if (match_len > maxlen)
2484                                         maxlen = match_len;
2485                         }
2486                         matches_num = i - 1;
2487                         if (matches_num >1) {
2488                                 fprintf(stdout, "\n");
2489                                 ast_cli_display_match_list(matches, nummatches, maxlen);
2490                                 retval = CC_REDISPLAY;
2491                         } else { 
2492                                 el_insertstr(editline," ");
2493                                 retval = CC_REFRESH;
2494                         }
2495                 }
2496                 for (i = 0; matches[i]; i++)
2497                         ast_free(matches[i]);
2498                 ast_free(matches);
2499         }
2500
2501         return (char *)(long)retval;
2502 }
2503
2504 static int ast_el_initialize(void)
2505 {
2506         HistEvent ev;
2507         char *editor = getenv("AST_EDITOR");
2508
2509         if (el != NULL)
2510                 el_end(el);
2511         if (el_hist != NULL)
2512                 history_end(el_hist);
2513
2514         el = el_init("asterisk", stdin, stdout, stderr);
2515         el_set(el, EL_PROMPT, cli_prompt);
2516
2517         el_set(el, EL_EDITMODE, 1);             
2518         el_set(el, EL_EDITOR, editor ? editor : "emacs");               
2519         el_hist = history_init();
2520         if (!el || !el_hist)
2521                 return -1;
2522
2523         /* setup history with 100 entries */
2524         history(el_hist, &ev, H_SETSIZE, 100);
2525
2526         el_set(el, EL_HIST, history, el_hist);
2527
2528         el_set(el, EL_ADDFN, "ed-complete", "Complete argument", cli_complete);
2529         /* Bind <tab> to command completion */
2530         el_set(el, EL_BIND, "^I", "ed-complete", NULL);
2531         /* Bind ? to command completion */
2532         el_set(el, EL_BIND, "?", "ed-complete", NULL);
2533         /* Bind ^D to redisplay */
2534         el_set(el, EL_BIND, "^D", "ed-redisplay", NULL);
2535
2536         return 0;
2537 }
2538
2539 #define MAX_HISTORY_COMMAND_LENGTH 256
2540
2541 static int ast_el_add_history(char *buf)
2542 {
2543         HistEvent ev;
2544
2545         if (el_hist == NULL || el == NULL)
2546                 ast_el_initialize();
2547         if (strlen(buf) > (MAX_HISTORY_COMMAND_LENGTH - 1))
2548                 return 0;
2549         return (history(el_hist, &ev, H_ENTER, ast_strip(ast_strdupa(buf))));
2550 }
2551
2552 static int ast_el_write_history(char *filename)
2553 {
2554         HistEvent ev;
2555
2556         if (el_hist == NULL || el == NULL)
2557                 ast_el_initialize();
2558
2559         return (history(el_hist, &ev, H_SAVE, filename));
2560 }
2561
2562 static int ast_el_read_history(char *filename)
2563 {
2564         char buf[MAX_HISTORY_COMMAND_LENGTH];
2565         FILE *f;
2566         int ret = -1;
2567
2568         if (el_hist == NULL || el == NULL)
2569                 ast_el_initialize();
2570
2571         if ((f = fopen(filename, "r")) == NULL)
2572                 return ret;
2573
2574         while (!feof(f)) {
2575                 if (!fgets(buf, sizeof(buf), f))
2576                         break;
2577                 if (!strcmp(buf, "_HiStOrY_V2_\n"))
2578                         continue;
2579                 if (ast_all_zeros(buf))
2580                         continue;
2581                 if ((ret = ast_el_add_history(buf)) == -1)
2582                         break;
2583         }
2584         fclose(f);
2585
2586         return ret;
2587 }
2588
2589 static void ast_remotecontrol(char *data)
2590 {
2591         char buf[80];
2592         int res;
2593         char filename[80] = "";
2594         char *hostname;
2595         char *cpid;
2596         char *version;
2597         int pid;
2598         char *stringp = NULL;
2599
2600         char *ebuf;
2601         int num = 0;
2602
2603         memset(&sig_flags, 0, sizeof(sig_flags));
2604         signal(SIGINT, __remote_quit_handler);
2605         signal(SIGTERM, __remote_quit_handler);
2606         signal(SIGHUP, __remote_quit_handler);
2607
2608         if (read(ast_consock, buf, sizeof(buf)) < 0) {
2609                 ast_log(LOG_ERROR, "read() failed: %s\n", strerror(errno));
2610                 return;
2611         }
2612         if (data) {
2613                 char prefix[] = "cli quit after ";
2614                 char *tmp = alloca(strlen(data) + strlen(prefix) + 1);
2615                 sprintf(tmp, "%s%s", prefix, data);
2616                 if (write(ast_consock, tmp, strlen(tmp) + 1) < 0) {
2617                         ast_log(LOG_ERROR, "write() failed: %s\n", strerror(errno));
2618                         if (sig_flags.need_quit == 1) {
2619                                 return;
2620                         }
2621                 }
2622         }
2623         stringp = buf;
2624         hostname = strsep(&stringp, "/");
2625         cpid = strsep(&stringp, "/");
2626         version = strsep(&stringp, "\n");
2627         if (!version)
2628                 version = "<Version Unknown>";
2629         stringp = hostname;
2630         strsep(&stringp, ".");
2631         if (cpid)
2632                 pid = atoi(cpid);
2633         else
2634                 pid = -1;
2635         if (!data) {
2636                 char tmp[80];
2637                 snprintf(tmp, sizeof(tmp), "core set verbose atleast %d", option_verbose);
2638                 fdsend(ast_consock, tmp);
2639                 snprintf(tmp, sizeof(tmp), "core set debug atleast %d", option_debug);
2640                 fdsend(ast_consock, tmp);
2641                 if (!ast_opt_mute)
2642                         fdsend(ast_consock, "logger mute silent");
2643                 else 
2644                         printf("log and verbose output currently muted ('logger mute' to unmute)\n");
2645         }
2646
2647         if (ast_opt_exec && data) {  /* hack to print output then exit if asterisk -rx is used */
2648                 struct pollfd fds;
2649                 fds.fd = ast_consock;
2650                 fds.events = POLLIN;
2651                 fds.revents = 0;
2652                 while (poll(&fds, 1, 500) > 0) {
2653                         char buffer[512] = "", *curline = buffer, *nextline;
2654                         int not_written = 1;
2655
2656                         if (sig_flags.need_quit == 1) {
2657                                 break;
2658                         }
2659
2660                         if (read(ast_consock, buffer, sizeof(buffer) - 1) <= 0) {
2661                                 break;
2662                         }
2663
2664                         do {
2665                                 if ((nextline = strchr(curline, '\n'))) {
2666                                         nextline++;
2667                                 } else {
2668                                         nextline = strchr(curline, '\0');
2669                                 }
2670
2671                                 /* Skip verbose lines */
2672                                 if (*curline != 127) {
2673                                         not_written = 0;
2674                                         if (write(STDOUT_FILENO, curline, nextline - curline) < 0) {
2675                                                 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
2676                                         }
2677                                 }
2678                                 curline = nextline;
2679                         } while (!ast_strlen_zero(curline));
2680
2681                         /* No non-verbose output in 500ms */
2682                         if (not_written) {
2683                                 break;
2684                         }
2685                 }
2686                 return;
2687         }
2688
2689         ast_verbose("Connected to Asterisk %s currently running on %s (pid = %d)\n", version, hostname, pid);
2690         remotehostname = hostname;
2691         if (getenv("HOME")) 
2692                 snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
2693         if (el_hist == NULL || el == NULL)
2694                 ast_el_initialize();
2695
2696         el_set(el, EL_GETCFN, ast_el_read_char);
2697
2698         if (!ast_strlen_zero(filename))
2699                 ast_el_read_history(filename);
2700
2701         for (;;) {
2702                 ebuf = (char *)el_gets(el, &num);
2703
2704                 if (sig_flags.need_quit == 1) {
2705                         break;
2706                 }
2707
2708                 if (!ebuf && write(1, "", 1) < 0)
2709                         break;
2710
2711                 if (!ast_strlen_zero(ebuf)) {
2712                         if (ebuf[strlen(ebuf)-1] == '\n')
2713                                 ebuf[strlen(ebuf)-1] = '\0';
2714                         if (!remoteconsolehandler(ebuf)) {
2715                                 /* Strip preamble from output */
2716                                 char *temp;
2717                                 for (temp = ebuf; *temp; temp++) {
2718                                         if (*temp == 127) {
2719                                                 memmove(temp, temp + 1, strlen(temp));
2720                                                 temp--;
2721                                         }
2722                                 }
2723                                 res = write(ast_consock, ebuf, strlen(ebuf) + 1);
2724                                 if (res < 1) {
2725                                         ast_log(LOG_WARNING, "Unable to write: %s\n", strerror(errno));
2726                                         break;
2727                                 }
2728                         }
2729                 }
2730         }
2731         printf("\nDisconnected from Asterisk server\n");
2732 }
2733
2734 static int show_version(void)
2735 {
2736         printf("Asterisk %s\n", ast_get_version());
2737         return 0;
2738 }
2739
2740 static int show_cli_help(void) {
2741         printf("Asterisk %s, Copyright (C) 1999 - 2008, Digium, Inc. and others.\n", ast_get_version());
2742         printf("Usage: asterisk [OPTIONS]\n");
2743         printf("Valid Options:\n");
2744         printf("   -V              Display version number and exit\n");
2745         printf("   -C <configfile> Use an alternate configuration file\n");
2746         printf("   -G <group>      Run as a group other than the caller\n");
2747         printf("   -U <user>       Run as a user other than the caller\n");
2748         printf("   -c              Provide console CLI\n");
2749         printf("   -d              Enable extra debugging\n");
2750 #if HAVE_WORKING_FORK
2751         printf("   -f              Do not fork\n");
2752         printf("   -F              Always fork\n");
2753 #endif
2754         printf("   -g              Dump core in case of a crash\n");
2755         printf("   -h              This help screen\n");
2756         printf("   -i              Initialize crypto keys at startup\n");
2757         printf("   -I              Enable internal timing if DAHDI timer is available\n");
2758         printf("   -L <load>       Limit the maximum load average before rejecting new calls\n");
2759         printf("   -M <value>      Limit the maximum number of calls to the specified value\n");
2760         printf("   -m              Mute debugging and console output on the console\n");
2761         printf("   -n              Disable console colorization\n");
2762         printf("   -p              Run as pseudo-realtime thread\n");
2763         printf("   -q              Quiet mode (suppress output)\n");
2764         printf("   -r              Connect to Asterisk on this machine\n");
2765         printf("   -R              Same as -r, except attempt to reconnect if disconnected\n");
2766         printf("   -s <socket>     Connect to Asterisk via socket <socket> (only valid with -r)\n");
2767         printf("   -t              Record soundfiles in /var/tmp and move them where they\n");
2768         printf("                   belong after they are done\n");
2769         printf("   -T              Display the time in [Mmm dd hh:mm:ss] format for each line\n");
2770         printf("                   of output to the CLI\n");
2771         printf("   -v              Increase verbosity (multiple v's = more verbose)\n");
2772         printf("   -x <cmd>        Execute command <cmd> (only valid with -r)\n");
2773         printf("   -W              Adjust terminal colors to compensate for a light background\n");
2774         printf("\n");
2775         return 0;
2776 }
2777
2778 static void ast_readconfig(void) 
2779 {
2780         struct ast_config *cfg;
2781         struct ast_variable *v;
2782         char *config = DEFAULT_CONFIG_FILE;
2783         char hostname[MAXHOSTNAMELEN] = "";
2784         struct ast_flags config_flags = { 0 };
2785         struct {
2786                 unsigned int dbdir:1;
2787                 unsigned int keydir:1;
2788         } found = { 0, 0 };
2789
2790         if (ast_opt_override_config) {
2791                 cfg = ast_config_load2(ast_config_AST_CONFIG_FILE, "" /* core, can't reload */, config_flags);
2792                 if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID)
2793                         ast_log(LOG_WARNING, "Unable to open specified master config file '%s', using built-in defaults\n", ast_config_AST_CONFIG_FILE);
2794         } else 
2795                 cfg = ast_config_load2(config, "" /* core, can't reload */, config_flags);
2796
2797         /* init with buildtime config */
2798         ast_copy_string(cfg_paths.config_dir, DEFAULT_CONFIG_DIR, sizeof(cfg_paths.config_dir));
2799         ast_copy_string(cfg_paths.spool_dir, DEFAULT_SPOOL_DIR, sizeof(cfg_paths.spool_dir));
2800         ast_copy_string(cfg_paths.module_dir, DEFAULT_MODULE_DIR, sizeof(cfg_paths.module_dir));
2801         snprintf(cfg_paths.monitor_dir, sizeof(cfg_paths.monitor_dir), "%s/monitor", cfg_paths.spool_dir);
2802         ast_copy_string(cfg_paths.var_dir, DEFAULT_VAR_DIR, sizeof(cfg_paths.var_dir));
2803         ast_copy_string(cfg_paths.data_dir, DEFAULT_DATA_DIR, sizeof(cfg_paths.data_dir));
2804         ast_copy_string(cfg_paths.log_dir, DEFAULT_LOG_DIR, sizeof(cfg_paths.log_dir));
2805         ast_copy_string(cfg_paths.agi_dir, DEFAULT_AGI_DIR, sizeof(cfg_paths.agi_dir));
2806         ast_copy_string(cfg_paths.db_path, DEFAULT_DB, sizeof(cfg_paths.db_path));
2807         ast_copy_string(cfg_paths.key_dir, DEFAULT_KEY_DIR, sizeof(cfg_paths.key_dir));
2808         ast_copy_string(cfg_paths.pid_path, DEFAULT_PID, sizeof(cfg_paths.pid_path));
2809         ast_copy_string(cfg_paths.socket_path, DEFAULT_SOCKET, sizeof(cfg_paths.socket_path));
2810         ast_copy_string(cfg_paths.run_dir, DEFAULT_RUN_DIR, sizeof(cfg_paths.run_dir));
2811
2812         ast_set_default_eid(&g_eid);
2813
2814         /* no asterisk.conf? no problem, use buildtime config! */
2815         if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
2816                 return;
2817         }
2818
2819         for (v = ast_variable_browse(cfg, "files"); v; v = v->next) {
2820                 if (!strcasecmp(v->name, "astctlpermissions"))
2821                         ast_copy_string(ast_config_AST_CTL_PERMISSIONS, v->value, sizeof(ast_config_AST_CTL_PERMISSIONS));
2822                 else if (!strcasecmp(v->name, "astctlowner"))
2823                         ast_copy_string(ast_config_AST_CTL_OWNER, v->value, sizeof(ast_config_AST_CTL_OWNER));
2824                 else if (!strcasecmp(v->name, "astctlgroup"))
2825                         ast_copy_string(ast_config_AST_CTL_GROUP, v->value, sizeof(ast_config_AST_CTL_GROUP));
2826                 else if (!strcasecmp(v->name, "astctl"))
2827                         ast_copy_string(ast_config_AST_CTL, v->value, sizeof(ast_config_AST_CTL));
2828         }
2829
2830         for (v = ast_variable_browse(cfg, "directories"); v; v = v->next) {
2831                 if (!strcasecmp(v->name, "astetcdir")) {
2832                         ast_copy_string(cfg_paths.config_dir, v->value, sizeof(cfg_paths.config_dir));
2833                 } else if (!strcasecmp(v->name, "astspooldir")) {
2834                         ast_copy_string(cfg_paths.spool_dir, v->value, sizeof(cfg_paths.spool_dir));
2835                         snprintf(cfg_paths.monitor_dir, sizeof(cfg_paths.monitor_dir), "%s/monitor", v->value);
2836                 } else if (!strcasecmp(v->name, "astvarlibdir")) {
2837                         ast_copy_string(cfg_paths.var_dir, v->value, sizeof(cfg_paths.var_dir));
2838                         if (!found.dbdir)
2839                                 snprintf(cfg_paths.db_path, sizeof(cfg_paths.db_path), "%s/astdb", v->value);
2840                 } else if (!strcasecmp(v->name, "astdbdir")) {
2841                         snprintf(cfg_paths.db_path, sizeof(cfg_paths.db_path), "%s/astdb", v->value);
2842                         found.dbdir = 1;
2843                 } else if (!strcasecmp(v->name, "astdatadir")) {
2844                         ast_copy_string(cfg_paths.data_dir, v->value, sizeof(cfg_paths.data_dir));
2845                         if (!found.keydir)
2846                                 snprintf(cfg_paths.key_dir, sizeof(cfg_paths.key_dir), "%s/keys", v->value);
2847                 } else if (!strcasecmp(v->name, "astkeydir")) {
2848                         snprintf(cfg_paths.key_dir, sizeof(cfg_paths.key_dir), "%s/keys", v->value);
2849                         found.keydir = 1;
2850                 } else if (!strcasecmp(v->name, "astlogdir")) {
2851                         ast_copy_string(cfg_paths.log_dir, v->value, sizeof(cfg_paths.log_dir));
2852                 } else if (!strcasecmp(v->name, "astagidir")) {
2853                         ast_copy_string(cfg_paths.agi_dir, v->value, sizeof(cfg_paths.agi_dir));
2854                 } else if (!strcasecmp(v->name, "astrundir")) {
2855                         snprintf(cfg_paths.pid_path, sizeof(cfg_paths.pid_path), "%s/%s", v->value, "asterisk.pid");
2856                         snprintf(cfg_paths.socket_path, sizeof(cfg_paths.socket_path), "%s/%s", v->value, ast_config_AST_CTL);
2857                         ast_copy_string(cfg_paths.run_dir, v->value, sizeof(cfg_paths.run_dir));
2858                 } else if (!strcasecmp(v->name, "astmoddir")) {
2859                         ast_copy_string(cfg_paths.module_dir, v->value, sizeof(cfg_paths.module_dir));
2860                 }
2861         }
2862
2863         for (v = ast_variable_browse(cfg, "options"); v; v = v->next) {
2864                 /* verbose level (-v at startup) */
2865                 if (!strcasecmp(v->name, "verbose")) {
2866                         option_verbose = atoi(v->value);
2867                 /* whether or not to force timestamping in CLI verbose output. (-T at startup) */
2868                 } else if (!strcasecmp(v->name, "timestamp")) {
2869                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_TIMESTAMP);
2870                 /* whether or not to support #exec in config files */
2871                 } else if (!strcasecmp(v->name, "execincludes")) {
2872                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_EXEC_INCLUDES);
2873                 /* debug level (-d at startup) */
2874                 } else if (!strcasecmp(v->name, "debug")) {
2875                         option_debug = 0;
2876                         if (sscanf(v->value, "%d", &option_debug) != 1) {
2877                                 option_debug = ast_true(v->value);
2878                         }
2879 #if HAVE_WORKING_FORK
2880                 /* Disable forking (-f at startup) */
2881                 } else if (!strcasecmp(v->name, "nofork")) {
2882                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_NO_FORK);
2883                 /* Always fork, even if verbose or debug are enabled (-F at startup) */
2884                 } else if (!strcasecmp(v->name, "alwaysfork")) {
2885                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_ALWAYS_FORK);
2886 #endif
2887                 /* Run quietly (-q at startup ) */
2888                 } else if (!strcasecmp(v->name, "quiet")) {
2889                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_QUIET);
2890                 /* Run as console (-c at startup, implies nofork) */
2891                 } else if (!strcasecmp(v->name, "console")) {
2892                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_CONSOLE);
2893                 /* Run with high priority if the O/S permits (-p at startup) */
2894                 } else if (!strcasecmp(v->name, "highpriority")) {
2895                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_HIGH_PRIORITY);
2896                 /* Initialize RSA auth keys (IAX2) (-i at startup) */
2897                 } else if (!strcasecmp(v->name, "initcrypto")) {
2898                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_INIT_KEYS);
2899                 /* Disable ANSI colors for console (-c at startup) */
2900                 } else if (!strcasecmp(v->name, "nocolor")) {
2901                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_NO_COLOR);
2902                 /* Disable some usage warnings for picky people :p */
2903                 } else if (!strcasecmp(v->name, "dontwarn")) {
2904                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_DONT_WARN);
2905                 /* Dump core in case of crash (-g) */
2906                 } else if (!strcasecmp(v->name, "dumpcore")) {
2907                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_DUMP_CORE);
2908                 /* Cache recorded sound files to another directory during recording */
2909                 } else if (!strcasecmp(v->name, "cache_record_files")) {
2910                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_CACHE_RECORD_FILES);
2911                 /* Specify cache directory */
2912                 }  else if (!strcasecmp(v->name, "record_cache_dir")) {
2913                         ast_copy_string(record_cache_dir, v->value, AST_CACHE_DIR_LEN);
2914                 /* Build transcode paths via SLINEAR, instead of directly */
2915                 } else if (!strcasecmp(v->name, "transcode_via_sln")) {
2916                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_TRANSCODE_VIA_SLIN);
2917                 /* Transmit SLINEAR silence while a channel is being recorded or DTMF is being generated on a channel */
2918                 } else if (!strcasecmp(v->name, "transmit_silence_during_record") || !strcasecmp(v->name, "transmit_silence")) {
2919                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_TRANSMIT_SILENCE);
2920                 /* Enable internal timing */
2921                 } else if (!strcasecmp(v->name, "internal_timing")) {
2922                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_INTERNAL_TIMING);
2923                 } else if (!strcasecmp(v->name, "maxcalls")) {
2924                         if ((sscanf(v->value, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0)) {
2925                                 option_maxcalls = 0;
2926                         }
2927                 } else if (!strcasecmp(v->name, "maxload")) {
2928                         double test[1];
2929
2930                         if (getloadavg(test, 1) == -1) {
2931                                 ast_log(LOG_ERROR, "Cannot obtain load average on this system. 'maxload' option disabled.\n");
2932                                 option_maxload = 0.0;
2933                         } else if ((sscanf(v->value, "%lf", &option_maxload) != 1) || (option_maxload < 0.0)) {
2934                                 option_maxload = 0.0;
2935                         }
2936                 /* Set the maximum amount of open files */
2937                 } else if (!strcasecmp(v->name, "maxfiles")) {
2938                         option_maxfiles = atoi(v->value);
2939                         set_ulimit(option_maxfiles);
2940                 /* What user to run as */
2941                 } else if (!strcasecmp(v->name, "runuser")) {
2942                         ast_copy_string(cfg_paths.run_user, v->value, sizeof(cfg_paths.run_user));
2943                 /* What group to run as */
2944                 } else if (!strcasecmp(v->name, "rungroup")) {
2945                         ast_copy_string(cfg_paths.run_group, v->value, sizeof(cfg_paths.run_group));
2946                 } else if (!strcasecmp(v->name, "systemname")) {
2947                         ast_copy_string(cfg_paths.system_name, v->value, sizeof(cfg_paths.system_name));
2948                 } else if (!strcasecmp(v->name, "autosystemname")) {
2949                         if (ast_true(v->value)) {
2950                                 if (!gethostname(hostname, sizeof(hostname) - 1))
2951                                         ast_copy_string(cfg_paths.system_name, hostname, sizeof(cfg_paths.system_name));
2952                                 else {
2953                                         if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)){
2954                                                 ast_copy_string(cfg_paths.system_name, "localhost", sizeof(cfg_paths.system_name));
2955                                         }
2956                                         ast_log(LOG_ERROR, "Cannot obtain hostname for this system.  Using '%s' instead.\n", ast_config_AST_SYSTEM_NAME);
2957                                 }
2958                         }
2959                 } else if (!strcasecmp(v->name, "languageprefix")) {
2960                         ast_language_is_prefix = ast_true(v->value);
2961                 } else if (!strcasecmp(v->name, "lockmode")) {
2962                         if (!strcasecmp(v->value, "lockfile")) {
2963                                 ast_set_lock_type(AST_LOCK_TYPE_LOCKFILE);
2964                         } else if (!strcasecmp(v->value, "flock")) {
2965                                 ast_set_lock_type(AST_LOCK_TYPE_FLOCK);
2966                         } else {
2967                                 ast_log(LOG_WARNING, "'%s' is not a valid setting for the lockmode option, "
2968                                         "defaulting to 'lockfile'\n", v->value);
2969                                 ast_set_lock_type(AST_LOCK_TYPE_LOCKFILE);
2970                         }
2971 #if defined(HAVE_SYSINFO)
2972                 } else if (!strcasecmp(v->name, "minmemfree")) {
2973                         /* specify the minimum amount of free memory to retain.  Asterisk should stop accepting new calls
2974                          * if the amount of free memory falls below this watermark */
2975                         if ((sscanf(v->value, "%ld", &option_minmemfree) != 1) || (option_minmemfree < 0)) {
2976                                 option_minmemfree = 0;
2977                         }
2978 #endif
2979                 } else if (!strcasecmp(v->name, "entityid")) {
2980                         struct ast_eid tmp_eid;
2981                         if (!ast_str_to_eid(&tmp_eid, v->value)) {
2982                                 ast_verbose("Successfully set global EID to '%s'\n", v->value);
2983                                 g_eid = tmp_eid;
2984                         } else
2985                                 ast_verbose("Invalid Entity ID '%s' provided\n", v->value);
2986                 } else if (!strcasecmp(v->name, "lightbackground")) {
2987                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_LIGHT_BACKGROUND);
2988                 } else if (!strcasecmp(v->name, "forceblackbackground")) {
2989                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_FORCE_BLACK_BACKGROUND);
2990                 } else if (!strcasecmp(v->name, "hideconnect")) {
2991                         ast_set2_flag(&ast_options, ast_true(v->value), AST_OPT_FLAG_HIDE_CONSOLE_CONNECT);
2992                 }
2993         }
2994         for (v = ast_variable_browse(cfg, "compat"); v; v = v->next) {
2995                 float version;
2996                 if (sscanf(v->value, "%f", &version) != 1) {
2997                         ast_log(LOG_WARNING, "Compatibility version for option '%s' is not a number: '%s'\n", v->name, v->value);
2998                         continue;
2999                 }
3000                 if (!strcasecmp(v->name, "app_set")) {
3001                         ast_set2_flag(&ast_compat, version < 1.5 ? 1 : 0, AST_COMPAT_APP_SET);
3002                 } else if (!strcasecmp(v->name, "res_agi")) {
3003                         ast_set2_flag(&ast_compat, version < 1.5 ? 1 : 0, AST_COMPAT_DELIM_RES_AGI);
3004                 } else if (!strcasecmp(v->name, "pbx_realtime")) {
3005                         ast_set2_flag(&ast_compat, version < 1.5 ? 1 : 0, AST_COMPAT_DELIM_PBX_REALTIME);
3006                 }
3007         }
3008         ast_config_destroy(cfg);
3009 }
3010
3011 static void *monitor_sig_flags(void *unused)
3012 {
3013         for (;;) {
3014                 struct pollfd p = { sig_alert_pipe[0], POLLIN, 0 };
3015                 int a;
3016                 poll(&p, 1, -1);
3017                 if (sig_flags.need_reload) {
3018                         sig_flags.need_reload = 0;
3019                         ast_module_reload(NULL);
3020                 }
3021                 if (sig_flags.need_quit) {
3022                         sig_flags.need_quit = 0;
3023                         quit_handler(0, 0, 1, 0);
3024                 }
3025                 if (read(sig_alert_pipe[0], &a, sizeof(a)) != sizeof(a)) {
3026                 }
3027         }
3028
3029         return NULL;
3030 }
3031
3032 static void *canary_thread(void *unused)
3033 {
3034         struct stat canary_stat;
3035         struct timeval now;
3036
3037         /* Give the canary time to sing */
3038         sleep(120);
3039
3040         for (;;) {
3041                 stat(canary_filename, &canary_stat);
3042                 now = ast_tvnow();
3043                 if (now.tv_sec > canary_stat.st_mtime + 60) {
3044                         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");
3045                         ast_set_priority(0);
3046                         pthread_exit(NULL);
3047                 }
3048
3049                 /* Check the canary once a minute */
3050                 sleep(60);
3051         }
3052 }
3053
3054 /* Used by libc's atexit(3) function */
3055 static void canary_exit(void)
3056 {
3057         if (canary_pid > 0)
3058                 kill(canary_pid, SIGKILL);
3059 }
3060
3061 static void run_startup_commands(void)
3062 {
3063         int fd;
3064         struct ast_config *cfg;
3065         struct ast_flags cfg_flags = { 0 };
3066         struct ast_variable *v;
3067
3068         if (!(cfg = ast_config_load2("cli.conf", "" /* core, can't reload */, cfg_flags)))
3069                 return;
3070         if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
3071                 return;
3072         }
3073
3074         fd = open("/dev/null", O_RDWR);
3075         if (fd < 0) {
3076                 ast_config_destroy(cfg);
3077                 return;
3078         }
3079
3080         for (v = ast_variable_browse(cfg, "startup_commands"); v; v = v->next) {
3081                 if (ast_true(v->value))
3082                         ast_cli_command(fd, v->name);
3083         }
3084
3085         close(fd);
3086         ast_config_destroy(cfg);
3087 }
3088
3089 int main(int argc, char *argv[])
3090 {
3091         int c;
3092         char filename[80] = "";
3093         char hostname[MAXHOSTNAMELEN] = "";
3094         char tmp[80];
3095         char * xarg = NULL;
3096         int x;
3097         FILE *f;
3098         sigset_t sigs;
3099         int num;
3100         int isroot = 1;
3101         char *buf;
3102         const char *runuser = NULL, *rungroup = NULL;
3103         char *remotesock = NULL;
3104
3105         /* Remember original args for restart */
3106         if (argc > ARRAY_LEN(_argv) - 1) {
3107                 fprintf(stderr, "Truncating argument size to %d\n", (int)ARRAY_LEN(_argv) - 1);
3108                 argc = ARRAY_LEN(_argv) - 1;
3109         }
3110         for (x = 0; x < argc; x++)
3111                 _argv[x] = argv[x];
3112         _argv[x] = NULL;
3113
3114         if (geteuid() != 0)
3115                 isroot = 0;
3116
3117         /* if the progname is rasterisk consider it a remote console */
3118         if (argv[0] && (strstr(argv[0], "rasterisk")) != NULL) {
3119                 ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE);
3120         }
3121         if (gethostname(hostname, sizeof(hostname)-1))
3122                 ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
3123         ast_mainpid = getpid();
3124         ast_ulaw_init();
3125         ast_alaw_init();
3126         callerid_init();
3127         ast_builtins_init();
3128         ast_utils_init();
3129         tdd_init();
3130         ast_tps_init();
3131
3132         if (getenv("HOME")) 
3133                 snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
3134         /* Check for options */
3135         while ((c = getopt(argc, argv, "mtThfFdvVqprRgciInx:U:G:C:L:M:e:s:WB")) != -1) {