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asterisk/asterisk.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/* Doxygenified Copyright Header */
/*!
* \mainpage Asterisk -- An Open Source Telephony Toolkit
*
* \par Developer Documentation for Asterisk
* This is the main developer documentation for Asterisk. It is
* generated by running "make progdocs".
* \par Additional documentation
* \arg \ref DevDoc
* \arg \ref ConfigFiles
*
* \section copyright Copyright and author
*
* Copyright (C) 1999 - 2005, Digium, Inc.
* Asterisk is a trade mark registered by Digium, Inc.
*
* \author Mark Spencer <markster@digium.com>
* Also see \ref AstCREDITS
*
* \section license License
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*
* \verbinclude LICENSE
*
*/
/*! \file
\brief Top level source file for Asterisk - the Open Source PBX. Implementation
of PBX core functions and CLI interface.
*/
#include <unistd.h>
#include <stdlib.h>
#include <sys/time.h>
#include <fcntl.h>
#include <stdio.h>
#include <signal.h>
#include <sched.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <sys/resource.h>
#include <grp.h>
#include <pwd.h>
#include <sys/stat.h>
#include <regex.h>
#if defined(__FreeBSD__) || defined( __NetBSD__ ) || defined(SOLARIS)
#include <netdb.h>
#endif
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/logger.h"
#include "asterisk/options.h"
#include "asterisk/cli.h"
#include "asterisk/channel.h"
#include "asterisk/ulaw.h"
#include "asterisk/alaw.h"
#include "asterisk/callerid.h"
#include "asterisk/module.h"
#include "asterisk/image.h"
#include "asterisk/tdd.h"
#include "asterisk/term.h"
#include "asterisk/manager.h"
#include "asterisk/cdr.h"
#include "asterisk/pbx.h"
#include "asterisk/enum.h"
#include "asterisk/rtp.h"
#include "asterisk/app.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"
#include "asterisk/file.h"
#include "asterisk/io.h"
#include "asterisk/lock.h"
#include "editline/histedit.h"
#include "asterisk/config.h"
#include "asterisk/version.h"
#include "asterisk/linkedlists.h"
#include "asterisk/devicestate.h"
#include "asterisk/compat.h"
#include "asterisk/doxyref.h" /* Doxygen documentation */
#include "defaults.h"
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#define PF_LOCAL PF_UNIX
#endif
#define AST_MAX_CONNECTS 128
#define NUM_MSGS 64
/*! \brief Welcome message when starting a CLI interface */
#define WELCOME_MESSAGE ast_verbose( "Asterisk " ASTERISK_VERSION ", Copyright (C) 1999 - 2005 Digium.\n"); \
ast_verbose( "Written by Mark Spencer <markster@digium.com>\n"); \
ast_verbose( "=========================================================================\n")
/*! \defgroup main_options
\brief Main configuration options from \ref Config_ast "asterisk.conf" or
the operating system command line when starting Asterisk
Some of them can be changed in the CLI
*/
/*! @{ */
int option_verbose=0; /*!< Verbosity level */
int option_debug=0; /*!< Debug level */
int option_exec_includes=0; /*!< Allow \#exec in config files? */
int option_nofork=0; /*!< Do not fork */
int option_quiet=0; /*!< Keep quiet */
int option_console=0; /*!< Console mode, no background */
int option_highpriority=0; /*!< Run in realtime Linux priority */
int option_remote=0; /*!< Remote CLI */
int option_exec=0; /*!< */
int option_initcrypto=0; /*!< Initialize crypto keys for RSA auth */
int option_nocolor; /*!< Don't use termcap colors */
int option_dumpcore = 0; /*!< Dump core when failing */
int option_cache_record_files = 0; /*!< Cache sound files */
int option_timestamp = 0; /*!< Timestamp in logging */
int option_overrideconfig = 0; /*!< */
int option_reconnect = 0; /*!< */
int option_transcode_slin = 1; /*!< */
int option_maxcalls = 0; /*!< */
double option_maxload = 0.0; /*!< Max load avg on system */
int option_dontwarn = 0; /*!< */
int option_priority_jumping = 1; /*!< Enable priority jumping as result value for apps */
int option_transmit_silence_during_record = 0; /*!< Transmit silence during record() app */
/*! @} */
int fully_booted = 0;
char record_cache_dir[AST_CACHE_DIR_LEN] = AST_TMP_DIR;
char debug_filename[AST_FILENAME_MAX] = "";
static int ast_socket = -1; /*!< UNIX Socket for allowing remote control */
static int ast_consock = -1; /*!< UNIX Socket for controlling another asterisk */
int ast_mainpid;
struct console {
int fd; /*!< File descriptor */
int p[2]; /*!< Pipe */
pthread_t t; /*!< Thread of handler */
};
static struct ast_atexit {
void (*func)(void);
struct ast_atexit *next;
} *atexits = NULL;
AST_MUTEX_DEFINE_STATIC(atexitslock);
time_t ast_startuptime;
time_t ast_lastreloadtime;
static History *el_hist = NULL;
static EditLine *el = NULL;
static char *remotehostname;
struct console consoles[AST_MAX_CONNECTS];
char defaultlanguage[MAX_LANGUAGE] = DEFAULT_LANGUAGE;
static int ast_el_add_history(char *);
static int ast_el_read_history(char *);
static int ast_el_write_history(char *);
char ast_config_AST_CONFIG_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_CONFIG_FILE[AST_CONFIG_MAX_PATH];
char ast_config_AST_MODULE_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_SPOOL_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_MONITOR_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_VAR_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_LOG_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_AGI_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_DB[AST_CONFIG_MAX_PATH];
char ast_config_AST_KEY_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_PID[AST_CONFIG_MAX_PATH];
char ast_config_AST_SOCKET[AST_CONFIG_MAX_PATH];
char ast_config_AST_RUN_DIR[AST_CONFIG_MAX_PATH];
char ast_config_AST_RUN_USER[AST_CONFIG_MAX_PATH];
char ast_config_AST_RUN_GROUP[AST_CONFIG_MAX_PATH];
char ast_config_AST_CTL_PERMISSIONS[AST_CONFIG_MAX_PATH];
char ast_config_AST_CTL_OWNER[AST_CONFIG_MAX_PATH] = "\0";
char ast_config_AST_CTL_GROUP[AST_CONFIG_MAX_PATH] = "\0";
char ast_config_AST_CTL[AST_CONFIG_MAX_PATH] = "asterisk.ctl";
static char *_argv[256];
static int shuttingdown = 0;
static int restartnow = 0;
static pthread_t consolethread = AST_PTHREADT_NULL;
#if !defined(LOW_MEMORY)
struct file_version {
AST_LIST_ENTRY(file_version) list;
const char *file;
char *version;
};
static AST_LIST_HEAD_STATIC(file_versions, file_version);
void ast_register_file_version(const char *file, const char *version)
{
struct file_version *new;
char *work;
size_t version_length;
work = ast_strdupa(version);
work = ast_strip(ast_strip_quoted(work, "$", "$"));
version_length = strlen(work) + 1;
new = calloc(1, sizeof(*new) + version_length);
if (!new)
return;
new->file = file;
new->version = (char *) new + sizeof(*new);
memcpy(new->version, work, version_length);
AST_LIST_LOCK(&file_versions);
AST_LIST_INSERT_HEAD(&file_versions, new, list);
AST_LIST_UNLOCK(&file_versions);
}
void ast_unregister_file_version(const char *file)
{
struct file_version *find;
AST_LIST_LOCK(&file_versions);
AST_LIST_TRAVERSE_SAFE_BEGIN(&file_versions, find, list) {
if (!strcasecmp(find->file, file)) {
AST_LIST_REMOVE_CURRENT(&file_versions, list);
break;
}
}
AST_LIST_TRAVERSE_SAFE_END;
AST_LIST_UNLOCK(&file_versions);
if (find)
free(find);
}
static char show_version_files_help[] =
"Usage: show version files [like <pattern>]\n"
" Shows the revision numbers of the files used to build this copy of Asterisk.\n"
" Optional regular expression pattern is used to filter the file list.\n";
/*! CLI command to list module versions */
static int handle_show_version_files(int fd, int argc, char *argv[])
{
#define FORMAT "%-25.25s %-40.40s\n"
struct file_version *iterator;
regex_t regexbuf;
int havepattern = 0;
int havename = 0;
int count_files = 0;
switch (argc) {
case 5:
if (!strcasecmp(argv[3], "like")) {
if (regcomp(&regexbuf, argv[4], REG_EXTENDED | REG_NOSUB))
return RESULT_SHOWUSAGE;
havepattern = 1;
} else
return RESULT_SHOWUSAGE;
break;
case 4:
havename = 1;
break;
case 3:
break;
default:
return RESULT_SHOWUSAGE;
}
ast_cli(fd, FORMAT, "File", "Revision");
ast_cli(fd, FORMAT, "----", "--------");
AST_LIST_LOCK(&file_versions);
AST_LIST_TRAVERSE(&file_versions, iterator, list) {
if (havename && strcasecmp(iterator->file, argv[3]))
continue;
if (havepattern && regexec(&regexbuf, iterator->file, 0, NULL, 0))
continue;
ast_cli(fd, FORMAT, iterator->file, iterator->version);
count_files++;
if (havename)
break;
}
AST_LIST_UNLOCK(&file_versions);
if (!havename) {
ast_cli(fd, "%d files listed.\n", count_files);
}
if (havepattern)
regfree(&regexbuf);
return RESULT_SUCCESS;
#undef FORMAT
}
static char *complete_show_version_files(char *line, char *word, int pos, int state)
{
struct file_version *find;
int which = 0;
char *ret = NULL;
int matchlen = strlen(word);
if (pos != 3)
return NULL;
AST_LIST_LOCK(&file_versions);
AST_LIST_TRAVERSE(&file_versions, find, list) {
if (!strncasecmp(word, find->file, matchlen)) {
if (++which > state) {
ret = strdup(find->file);
break;
}
}
}
AST_LIST_UNLOCK(&file_versions);
return ret;
}
#endif /* ! LOW_MEMORY */
int ast_register_atexit(void (*func)(void))
{
int res = -1;
struct ast_atexit *ae;
ast_unregister_atexit(func);
ae = malloc(sizeof(struct ast_atexit));
ast_mutex_lock(&atexitslock);
if (ae) {
memset(ae, 0, sizeof(struct ast_atexit));
ae->next = atexits;
ae->func = func;
atexits = ae;
res = 0;
}
ast_mutex_unlock(&atexitslock);
return res;
}
void ast_unregister_atexit(void (*func)(void))
{
struct ast_atexit *ae, *prev = NULL;
ast_mutex_lock(&atexitslock);
ae = atexits;
while(ae) {
if (ae->func == func) {
if (prev)
prev->next = ae->next;
else
atexits = ae->next;
break;
}
prev = ae;
ae = ae->next;
}
ast_mutex_unlock(&atexitslock);
}
static int fdprint(int fd, const char *s)
{
return write(fd, s, strlen(s) + 1);
}
/*! NULL handler so we can collect the child exit status */
static void null_sig_handler(int signal)
{
}
AST_MUTEX_DEFINE_STATIC(safe_system_lock);
static unsigned int safe_system_level = 0;
static void *safe_system_prev_handler;
int ast_safe_system(const char *s)
{
pid_t pid;
int x;
int res;
struct rusage rusage;
int status;
unsigned int level;
/* keep track of how many ast_safe_system() functions
are running at this moment
*/
ast_mutex_lock(&safe_system_lock);
level = safe_system_level++;
/* only replace the handler if it has not already been done */
if (level == 0)
safe_system_prev_handler = signal(SIGCHLD, null_sig_handler);
ast_mutex_unlock(&safe_system_lock);
pid = fork();
if (pid == 0) {
/* Close file descriptors and launch system command */
for (x = STDERR_FILENO + 1; x < 4096; x++)
close(x);
execl("/bin/sh", "/bin/sh", "-c", s, NULL);
exit(1);
} else if (pid > 0) {
for(;;) {
res = wait4(pid, &status, 0, &rusage);
if (res > -1) {
res = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
break;
} else if (errno != EINTR)
break;
}
} else {
ast_log(LOG_WARNING, "Fork failed: %s\n", strerror(errno));
res = -1;
}
ast_mutex_lock(&safe_system_lock);
level = --safe_system_level;
/* only restore the handler if we are the last one */
if (level == 0)
signal(SIGCHLD, safe_system_prev_handler);
ast_mutex_unlock(&safe_system_lock);
return res;
}
/*!
* write the string to all attached console clients
*/
static void ast_network_puts(const char *string)
{
int x;
for (x=0;x<AST_MAX_CONNECTS; x++) {
if (consoles[x].fd > -1)
fdprint(consoles[x].p[1], string);
}
}
/*!
* write the string to the console, and all attached
* console clients
*/
void ast_console_puts(const char *string)
{
fputs(string, stdout);
fflush(stdout);
ast_network_puts(string);
}
static void network_verboser(const char *s, int pos, int replace, int complete)
/* ARGUSED */
{
if (replace) {
char *t = alloca(strlen(s) + 2);
if (t) {
sprintf(t, "\r%s", s);
if (complete)
ast_network_puts(t);
} else {
ast_log(LOG_ERROR, "Out of memory\n");
ast_network_puts(s);
}
} else {
if (complete)
ast_network_puts(s);
}
}
static pthread_t lthread;
static void *netconsole(void *vconsole)
{
struct console *con = vconsole;
char hostname[MAXHOSTNAMELEN]="";
char tmp[512];
int res;
struct pollfd fds[2];
if (gethostname(hostname, sizeof(hostname)-1))
ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
snprintf(tmp, sizeof(tmp), "%s/%d/%s\n", hostname, ast_mainpid, ASTERISK_VERSION);
fdprint(con->fd, tmp);
for(;;) {
fds[0].fd = con->fd;
fds[0].events = POLLIN;
fds[0].revents = 0;
fds[1].fd = con->p[0];
fds[1].events = POLLIN;
fds[1].revents = 0;
res = poll(fds, 2, -1);
if (res < 0) {
if (errno != EINTR)
ast_log(LOG_WARNING, "poll returned < 0: %s\n", strerror(errno));
continue;
}
if (fds[0].revents) {
res = read(con->fd, tmp, sizeof(tmp));
if (res < 1) {
break;
}
tmp[res] = 0;
ast_cli_command(con->fd, tmp);
}
if (fds[1].revents) {
res = read(con->p[0], tmp, sizeof(tmp));
if (res < 1) {
ast_log(LOG_ERROR, "read returned %d\n", res);
break;
}
res = write(con->fd, tmp, res);
if (res < 1)
break;
}
}
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Remote UNIX connection disconnected\n");
close(con->fd);
close(con->p[0]);
close(con->p[1]);
con->fd = -1;
return NULL;
}
static void *listener(void *unused)
{
struct sockaddr_un sunaddr;
int s;
socklen_t len;
int x;
int flags;
struct pollfd fds[1];
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
for(;;) {
if (ast_socket < 0)
return NULL;
fds[0].fd = ast_socket;
fds[0].events= POLLIN;
s = poll(fds, 1, -1);
if (s < 0) {
if (errno != EINTR)
ast_log(LOG_WARNING, "poll returned error: %s\n", strerror(errno));
continue;
}
len = sizeof(sunaddr);
s = accept(ast_socket, (struct sockaddr *)&sunaddr, &len);
if (s < 0) {
if (errno != EINTR)
ast_log(LOG_WARNING, "Accept returned %d: %s\n", s, strerror(errno));
} else {
for (x=0;x<AST_MAX_CONNECTS;x++) {
if (consoles[x].fd < 0) {
if (socketpair(AF_LOCAL, SOCK_STREAM, 0, consoles[x].p)) {
ast_log(LOG_ERROR, "Unable to create pipe: %s\n", strerror(errno));
consoles[x].fd = -1;
fdprint(s, "Server failed to create pipe\n");
close(s);
break;
}
flags = fcntl(consoles[x].p[1], F_GETFL);
fcntl(consoles[x].p[1], F_SETFL, flags | O_NONBLOCK);
consoles[x].fd = s;
if (ast_pthread_create(&consoles[x].t, &attr, netconsole, &consoles[x])) {
ast_log(LOG_ERROR, "Unable to spawn thread to handle connection: %s\n", strerror(errno));
consoles[x].fd = -1;
fdprint(s, "Server failed to spawn thread\n");
close(s);
}
break;
}
}
if (x >= AST_MAX_CONNECTS) {
fdprint(s, "No more connections allowed\n");
ast_log(LOG_WARNING, "No more connections allowed\n");
close(s);
} else if (consoles[x].fd > -1) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Remote UNIX connection\n");
}
}
}
return NULL;
}
static int ast_makesocket(void)
{
struct sockaddr_un sunaddr;
int res;
int x;
uid_t uid = -1;
gid_t gid = -1;
for (x = 0; x < AST_MAX_CONNECTS; x++)
consoles[x].fd = -1;
unlink(ast_config_AST_SOCKET);
ast_socket = socket(PF_LOCAL, SOCK_STREAM, 0);
if (ast_socket < 0) {
ast_log(LOG_WARNING, "Unable to create control socket: %s\n", strerror(errno));
return -1;
}
memset(&sunaddr, 0, sizeof(sunaddr));
sunaddr.sun_family = AF_LOCAL;
ast_copy_string(sunaddr.sun_path, ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
res = bind(ast_socket, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
if (res) {
ast_log(LOG_WARNING, "Unable to bind socket to %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
close(ast_socket);
ast_socket = -1;
return -1;
}
res = listen(ast_socket, 2);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to listen on socket %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
close(ast_socket);
ast_socket = -1;
return -1;
}
ast_register_verbose(network_verboser);
ast_pthread_create(&lthread, NULL, listener, NULL);
if (!ast_strlen_zero(ast_config_AST_CTL_OWNER)) {
struct passwd *pw;
if ((pw = getpwnam(ast_config_AST_CTL_OWNER)) == NULL) {
ast_log(LOG_WARNING, "Unable to find uid of user %s\n", ast_config_AST_CTL_OWNER);
} else {
uid = pw->pw_uid;
}
}
if (!ast_strlen_zero(ast_config_AST_CTL_GROUP)) {
struct group *grp;
if ((grp = getgrnam(ast_config_AST_CTL_GROUP)) == NULL) {
ast_log(LOG_WARNING, "Unable to find gid of group %s\n", ast_config_AST_CTL_GROUP);
} else {
gid = grp->gr_gid;
}
}
if (chown(ast_config_AST_SOCKET, uid, gid) < 0)
ast_log(LOG_WARNING, "Unable to change ownership of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
if (!ast_strlen_zero(ast_config_AST_CTL_PERMISSIONS)) {
mode_t p;
sscanf(ast_config_AST_CTL_PERMISSIONS, "%o", (int *) &p);
if ((chmod(ast_config_AST_SOCKET, p)) < 0)
ast_log(LOG_WARNING, "Unable to change file permissions of %s: %s\n", ast_config_AST_SOCKET, strerror(errno));
}
return 0;
}
static int ast_tryconnect(void)
{
struct sockaddr_un sunaddr;
int res;
ast_consock = socket(PF_LOCAL, SOCK_STREAM, 0);
if (ast_consock < 0) {
ast_log(LOG_WARNING, "Unable to create socket: %s\n", strerror(errno));
return 0;
}
memset(&sunaddr, 0, sizeof(sunaddr));
sunaddr.sun_family = AF_LOCAL;
ast_copy_string(sunaddr.sun_path, (char *)ast_config_AST_SOCKET, sizeof(sunaddr.sun_path));
res = connect(ast_consock, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
if (res) {
close(ast_consock);
ast_consock = -1;
return 0;
} else
return 1;
}
/*! Urgent handler
Called by soft_hangup to interrupt the poll, read, or other
system call. We don't actually need to do anything though.
Remember: Cannot EVER ast_log from within a signal handler
SLD: seems to be some pthread activity relating to the printf anyway:
which is leading to a deadlock?
*/
static void urg_handler(int num)
{
#if 0
if (option_debug > 2)
printf("-- Asterisk Urgent handler\n");
#endif
signal(num, urg_handler);
return;
}
static void hup_handler(int num)
{
if (option_verbose > 1)
printf("Received HUP signal -- Reloading configs\n");
if (restartnow)
execvp(_argv[0], _argv);
/* XXX This could deadlock XXX */
ast_module_reload(NULL);
signal(num, hup_handler);
}
static void child_handler(int sig)
{
/* Must not ever ast_log or ast_verbose within signal handler */
int n, status;
/*
* Reap all dead children -- not just one
*/
for (n = 0; wait4(-1, &status, WNOHANG, NULL) > 0; n++)
;
if (n == 0 && option_debug)
printf("Huh? Child handler, but nobody there?\n");
signal(sig, child_handler);
}
/*! Set an X-term or screen title */
static void set_title(char *text)
{
if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
fprintf(stdout, "\033]2;%s\007", text);
}
static void set_icon(char *text)
{
if (getenv("TERM") && strstr(getenv("TERM"), "xterm"))
fprintf(stdout, "\033]1;%s\007", text);
}
/*! We set ourselves to a high priority, that we might pre-empt everything
else. If your PBX has heavy activity on it, this is a good thing. */
int ast_set_priority(int pri)
{
struct sched_param sched;
memset(&sched, 0, sizeof(sched));
#ifdef __linux__
if (pri) {
sched.sched_priority = 10;
if (sched_setscheduler(0, SCHED_RR, &sched)) {
ast_log(LOG_WARNING, "Unable to set high priority\n");
return -1;
} else
if (option_verbose)
ast_verbose("Set to realtime thread\n");
} else {
sched.sched_priority = 0;
if (sched_setscheduler(0, SCHED_OTHER, &sched)) {
ast_log(LOG_WARNING, "Unable to set normal priority\n");
return -1;
}
}
#else
if (pri) {
if (setpriority(PRIO_PROCESS, 0, -10) == -1) {
ast_log(LOG_WARNING, "Unable to set high priority\n");
return -1;
} else
if (option_verbose)
ast_verbose("Set to high priority\n");
} else {
if (setpriority(PRIO_PROCESS, 0, 0) == -1) {
ast_log(LOG_WARNING, "Unable to set normal priority\n");
return -1;
}
}
#endif
return 0;
}
static void ast_run_atexits(void)
{
struct ast_atexit *ae;
ast_mutex_lock(&atexitslock);
ae = atexits;
while(ae) {
if (ae->func)
ae->func();
ae = ae->next;
}
ast_mutex_unlock(&atexitslock);
}
static void quit_handler(int num, int nice, int safeshutdown, int restart)
{
char filename[80] = "";
time_t s,e;
int x;
/* Try to get as many CDRs as possible submitted to the backend engines (if in batch mode) */
ast_cdr_engine_term();
if (safeshutdown) {
shuttingdown = 1;
if (!nice) {
/* Begin shutdown routine, hanging up active channels */
ast_begin_shutdown(1);
if (option_verbose && option_console)
ast_verbose("Beginning asterisk %s....\n", restart ? "restart" : "shutdown");
time(&s);
for(;;) {
time(&e);
/* Wait up to 15 seconds for all channels to go away */
if ((e - s) > 15)
break;
if (!ast_active_channels())
break;
if (!shuttingdown)
break;
/* Sleep 1/10 of a second */
usleep(100000);
}
} else {
if (nice < 2)
ast_begin_shutdown(0);
if (option_verbose && option_console)
ast_verbose("Waiting for inactivity to perform %s...\n", restart ? "restart" : "halt");
for(;;) {
if (!ast_active_channels())
break;
if (!shuttingdown)
break;
sleep(1);
}
}
if (!shuttingdown) {
if (option_verbose && option_console)
ast_verbose("Asterisk %s cancelled.\n", restart ? "restart" : "shutdown");
return;
}
}
if (option_console || option_remote) {
if (getenv("HOME"))
snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
if (!ast_strlen_zero(filename))
ast_el_write_history(filename);
if (el != NULL)
el_end(el);
if (el_hist != NULL)
history_end(el_hist);
}
if (option_verbose)
ast_verbose("Executing last minute cleanups\n");
ast_run_atexits();
/* Called on exit */
if (option_verbose && option_console)
ast_verbose("Asterisk %s ending (%d).\n", ast_active_channels() ? "uncleanly" : "cleanly", num);
else if (option_debug)
ast_log(LOG_DEBUG, "Asterisk ending (%d).\n", num);
manager_event(EVENT_FLAG_SYSTEM, "Shutdown", "Shutdown: %s\r\nRestart: %s\r\n", ast_active_channels() ? "Uncleanly" : "Cleanly", restart ? "True" : "False");
if (ast_socket > -1) {
close(ast_socket);
ast_socket = -1;
}
if (ast_consock > -1)
close(ast_consock);
if (ast_socket > -1)
unlink((char *)ast_config_AST_SOCKET);
if (!option_remote) unlink((char *)ast_config_AST_PID);
printf(term_quit());
if (restart) {
if (option_verbose || option_console)
ast_verbose("Preparing for Asterisk restart...\n");
/* Mark all FD's for closing on exec */
for (x=3;x<32768;x++) {
fcntl(x, F_SETFD, FD_CLOEXEC);
}
if (option_verbose || option_console)
ast_verbose("Restarting Asterisk NOW...\n");
restartnow = 1;
/* close logger */
close_logger();
/* If there is a consolethread running send it a SIGHUP
so it can execvp, otherwise we can do it ourselves */
if ((consolethread != AST_PTHREADT_NULL) && (consolethread != pthread_self())) {
pthread_kill(consolethread, SIGHUP);
/* Give the signal handler some time to complete */
sleep(2);
} else
execvp(_argv[0], _argv);
} else {
/* close logger */
close_logger();
}
exit(0);
}
static void __quit_handler(int num)
{
quit_handler(num, 0, 1, 0);
}
static const char *fix_header(char *outbuf, int maxout, const char *s, char *cmp)
{
const char *c;
if (!strncmp(s, cmp, strlen(cmp))) {
c = s + strlen(cmp);
term_color(outbuf, cmp, COLOR_GRAY, 0, maxout);
return c;
}
return NULL;
}
static void console_verboser(const char *s, int pos, int replace, int complete)
{
char tmp[80];
const char *c=NULL;
/* Return to the beginning of the line */
if (!pos) {
fprintf(stdout, "\r");
if ((c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_4)) ||
(c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_3)) ||
(c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_2)) ||
(c = fix_header(tmp, sizeof(tmp), s, VERBOSE_PREFIX_1)))
fputs(tmp, stdout);
}
if (c)
fputs(c + pos,stdout);
else
fputs(s + pos,stdout);
fflush(stdout);
if (complete) {
/* Wake up a poll()ing console */
if (option_console && consolethread != AST_PTHREADT_NULL)
pthread_kill(consolethread, SIGURG);
}
}
static int ast_all_zeros(char *s)
{
while(*s) {
if (*s > 32)
return 0;
s++;
}
return 1;
}
static void consolehandler(char *s)
{
printf(term_end());
fflush(stdout);
/* Called when readline data is available */
if (s && !ast_all_zeros(s))
ast_el_add_history(s);
/* Give the console access to the shell */
if (s) {
/* The real handler for bang */
if (s[0] == '!') {
if (s[1])
ast_safe_system(s+1);
else
ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
} else
ast_cli_command(STDOUT_FILENO, s);
} else
fprintf(stdout, "\nUse \"quit\" to exit\n");
}
static int remoteconsolehandler(char *s)
{
int ret = 0;
/* Called when readline data is available */
if (s && !ast_all_zeros(s))
ast_el_add_history(s);
/* Give the console access to the shell */
if (s) {
/* The real handler for bang */
if (s[0] == '!') {
if (s[1])
ast_safe_system(s+1);
else
ast_safe_system(getenv("SHELL") ? getenv("SHELL") : "/bin/sh");
ret = 1;
}
if ((strncasecmp(s, "quit", 4) == 0 || strncasecmp(s, "exit", 4) == 0) &&
(s[4] == '\0' || isspace(s[4]))) {
quit_handler(0, 0, 0, 0);
ret = 1;
}
} else
fprintf(stdout, "\nUse \"quit\" to exit\n");
return ret;
}
static char abort_halt_help[] =
"Usage: abort shutdown\n"
" Causes Asterisk to abort an executing shutdown or restart, and resume normal\n"
" call operations.\n";
static char shutdown_now_help[] =
"Usage: stop now\n"
" Shuts down a running Asterisk immediately, hanging up all active calls .\n";
static char shutdown_gracefully_help[] =
"Usage: stop gracefully\n"
" Causes Asterisk to not accept new calls, and exit when all\n"
" active calls have terminated normally.\n";
static char shutdown_when_convenient_help[] =
"Usage: stop when convenient\n"
" Causes Asterisk to perform a shutdown when all active calls have ended.\n";
static char restart_now_help[] =
"Usage: restart now\n"
" Causes Asterisk to hangup all calls and exec() itself performing a cold\n"
" restart.\n";
static char restart_gracefully_help[] =
"Usage: restart gracefully\n"
" Causes Asterisk to stop accepting new calls and exec() itself performing a cold\n"
" restart when all active calls have ended.\n";
static char restart_when_convenient_help[] =
"Usage: restart when convenient\n"
" Causes Asterisk to perform a cold restart when all active calls have ended.\n";
static char bang_help[] =
"Usage: !<command>\n"
" Executes a given shell command\n";
#if 0
static int handle_quit(int fd, int argc, char *argv[])
{
if (argc != 1)
return RESULT_SHOWUSAGE;
quit_handler(0, 0, 1, 0);
return RESULT_SUCCESS;
}
#endif
static int handle_shutdown_now(int fd, int argc, char *argv[])
{
if (argc != 2)
return RESULT_SHOWUSAGE;
quit_handler(0, 0 /* Not nice */, 1 /* safely */, 0 /* not restart */);
return RESULT_SUCCESS;
}
static int handle_shutdown_gracefully(int fd, int argc, char *argv[])
{
if (argc != 2)
return RESULT_SHOWUSAGE;
quit_handler(0, 1 /* nicely */, 1 /* safely */, 0 /* no restart */);
return RESULT_SUCCESS;
}
static int handle_shutdown_when_convenient(int fd, int argc, char *argv[])
{
if (argc != 3)
return RESULT_SHOWUSAGE;
quit_handler(0, 2 /* really nicely */, 1 /* safely */, 0 /* don't restart */);
return RESULT_SUCCESS;
}
static int handle_restart_now(int fd, int argc, char *argv[])
{
if (argc != 2)
return RESULT_SHOWUSAGE;
quit_handler(0, 0 /* not nicely */, 1 /* safely */, 1 /* restart */);
return RESULT_SUCCESS;
}
static int handle_restart_gracefully(int fd, int argc, char *argv[])
{
if (argc != 2)
return RESULT_SHOWUSAGE;
quit_handler(0, 1 /* nicely */, 1 /* safely */, 1 /* restart */);
return RESULT_SUCCESS;
}
static int handle_restart_when_convenient(int fd, int argc, char *argv[])
{
if (argc != 3)
return RESULT_SHOWUSAGE;
quit_handler(0, 2 /* really nicely */, 1 /* safely */, 1 /* restart */);
return RESULT_SUCCESS;
}
static int handle_abort_halt(int fd, int argc, char *argv[])
{
if (argc != 2)
return RESULT_SHOWUSAGE;
ast_cancel_shutdown();
shuttingdown = 0;
return RESULT_SUCCESS;
}
static int handle_bang(int fd, int argc, char *argv[])
{
return RESULT_SUCCESS;
}
#define ASTERISK_PROMPT "*CLI> "
#define ASTERISK_PROMPT2 "%s*CLI> "
static struct ast_cli_entry core_cli[] = {
{ { "abort", "halt", NULL }, handle_abort_halt,
"Cancel a running halt", abort_halt_help },
{ { "stop", "now", NULL }, handle_shutdown_now,
"Shut down Asterisk immediately", shutdown_now_help },
{ { "stop", "gracefully", NULL }, handle_shutdown_gracefully,
"Gracefully shut down Asterisk", shutdown_gracefully_help },
{ { "stop", "when","convenient", NULL }, handle_shutdown_when_convenient,
"Shut down Asterisk at empty call volume", shutdown_when_convenient_help },
{ { "restart", "now", NULL }, handle_restart_now,
"Restart Asterisk immediately", restart_now_help },
{ { "restart", "gracefully", NULL }, handle_restart_gracefully,
"Restart Asterisk gracefully", restart_gracefully_help },
{ { "restart", "when", "convenient", NULL }, handle_restart_when_convenient,
"Restart Asterisk at empty call volume", restart_when_convenient_help },
{ { "!", NULL }, handle_bang,
"Execute a shell command", bang_help },
#if !defined(LOW_MEMORY)
{ { "show", "version", "files", NULL }, handle_show_version_files,
"Show versions of files used to build Asterisk", show_version_files_help, complete_show_version_files },
#endif /* ! LOW_MEMORY */
};
static int ast_el_read_char(EditLine *el, char *cp)
{
int num_read=0;
int lastpos=0;
struct pollfd fds[2];
int res;
int max;
char buf[512];
for (;;) {
max = 1;
fds[0].fd = ast_consock;
fds[0].events = POLLIN;
if (!option_exec) {
fds[1].fd = STDIN_FILENO;
fds[1].events = POLLIN;
max++;
}
res = poll(fds, max, -1);
if (res < 0) {
if (errno == EINTR)
continue;
ast_log(LOG_ERROR, "poll failed: %s\n", strerror(errno));
break;
}
if (!option_exec && fds[1].revents) {
num_read = read(STDIN_FILENO, cp, 1);
if (num_read < 1) {
break;
} else
return (num_read);
}
if (fds[0].revents) {
res = read(ast_consock, buf, sizeof(buf) - 1);
/* if the remote side disappears exit */
if (res < 1) {
fprintf(stderr, "\nDisconnected from Asterisk server\n");
if (!option_reconnect) {
quit_handler(0, 0, 0, 0);
} else {
int tries;
int reconnects_per_second = 20;
fprintf(stderr, "Attempting to reconnect for 30 seconds\n");
for (tries=0;tries<30 * reconnects_per_second;tries++) {
if (ast_tryconnect()) {
fprintf(stderr, "Reconnect succeeded after %.3f seconds\n", 1.0 / reconnects_per_second * tries);
printf(term_quit());
WELCOME_MESSAGE;
break;
} else {
usleep(1000000 / reconnects_per_second);
}
}
if (tries >= 30 * reconnects_per_second) {
fprintf(stderr, "Failed to reconnect for 30 seconds. Quitting.\n");
quit_handler(0, 0, 0, 0);
}
}
}
buf[res] = '\0';
if (!option_exec && !lastpos)
write(STDOUT_FILENO, "\r", 1);
write(STDOUT_FILENO, buf, res);
if ((buf[res-1] == '\n') || (buf[res-2] == '\n')) {
*cp = CC_REFRESH;
return(1);
} else {
lastpos = 1;
}
}
}
*cp = '\0';
return (0);
}
static char *cli_prompt(EditLine *el)
{
static char prompt[200];
char *pfmt;
int color_used=0;
char term_code[20];
if ((pfmt = getenv("ASTERISK_PROMPT"))) {
char *t = pfmt, *p = prompt;
memset(prompt, 0, sizeof(prompt));
while (*t != '\0' && *p < sizeof(prompt)) {
if (*t == '%') {
char hostname[MAXHOSTNAMELEN]="";
int i;
struct timeval tv;
struct tm tm;
#ifdef linux
FILE *LOADAVG;
#endif
int fgcolor = COLOR_WHITE, bgcolor = COLOR_BLACK;
t++;
switch (*t) {
case 'C': /* color */
t++;
if (sscanf(t, "%d;%d%n", &fgcolor, &bgcolor, &i) == 2) {
strncat(p, term_color_code(term_code, fgcolor, bgcolor, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
t += i - 1;
} else if (sscanf(t, "%d%n", &fgcolor, &i) == 1) {
strncat(p, term_color_code(term_code, fgcolor, 0, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
t += i - 1;
}
/* If the color has been reset correctly, then there's no need to reset it later */
if ((fgcolor == COLOR_WHITE) && (bgcolor == COLOR_BLACK)) {
color_used = 0;
} else {
color_used = 1;
}
break;
case 'd': /* date */
memset(&tm, 0, sizeof(struct tm));
tv = ast_tvnow();
if (localtime_r(&(tv.tv_sec), &tm)) {
strftime(p, sizeof(prompt) - strlen(prompt), "%Y-%m-%d", &tm);
}
break;
case 'h': /* hostname */
if (!gethostname(hostname, sizeof(hostname) - 1)) {
strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
} else {
strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
}
break;
case 'H': /* short hostname */
if (!gethostname(hostname, sizeof(hostname) - 1)) {
for (i=0;i<sizeof(hostname);i++) {
if (hostname[i] == '.') {
hostname[i] = '\0';
break;
}
}
strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
} else {
strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
}
break;
#ifdef linux
case 'l': /* load avg */
t++;
if ((LOADAVG = fopen("/proc/loadavg", "r"))) {
float avg1, avg2, avg3;
int actproc, totproc, npid, which;
fscanf(LOADAVG, "%f %f %f %d/%d %d",
&avg1, &avg2, &avg3, &actproc, &totproc, &npid);
if (sscanf(t, "%d", &which) == 1) {
switch (which) {
case 1:
snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg1);
break;
case 2:
snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg2);
break;
case 3:
snprintf(p, sizeof(prompt) - strlen(prompt), "%.2f", avg3);
break;
case 4:
snprintf(p, sizeof(prompt) - strlen(prompt), "%d/%d", actproc, totproc);
break;
case 5:
snprintf(p, sizeof(prompt) - strlen(prompt), "%d", npid);
break;
}
}
}
break;
#endif
case 't': /* time */
memset(&tm, 0, sizeof(struct tm));
tv = ast_tvnow();
if (localtime_r(&(tv.tv_sec), &tm)) {
strftime(p, sizeof(prompt) - strlen(prompt), "%H:%M:%S", &tm);
}
break;
case '#': /* process console or remote? */
if (! option_remote) {
strncat(p, "#", sizeof(prompt) - strlen(prompt) - 1);
} else {
strncat(p, ">", sizeof(prompt) - strlen(prompt) - 1);
}
break;
case '%': /* literal % */
strncat(p, "%", sizeof(prompt) - strlen(prompt) - 1);
break;
case '\0': /* % is last character - prevent bug */
t--;
break;
}
while (*p != '\0') {
p++;
}
t++;
} else {
*p = *t;
p++;
t++;
}
}
if (color_used) {
/* Force colors back to normal at end */
term_color_code(term_code, COLOR_WHITE, COLOR_BLACK, sizeof(term_code));
if (strlen(term_code) > sizeof(prompt) - strlen(prompt)) {
strncat(prompt + sizeof(prompt) - strlen(term_code) - 1, term_code, strlen(term_code));
} else {
strncat(p, term_code, sizeof(term_code));
}
}
} else if (remotehostname)
snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT2, remotehostname);
else
snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT);
return(prompt);
}
static char **ast_el_strtoarr(char *buf)
{
char **match_list = NULL, *retstr;
size_t match_list_len;
int matches = 0;
match_list_len = 1;
while ( (retstr = strsep(&buf, " ")) != NULL) {
if (!strcmp(retstr, AST_CLI_COMPLETE_EOF))
break;
if (matches + 1 >= match_list_len) {
match_list_len <<= 1;
match_list = realloc(match_list, match_list_len * sizeof(char *));
}
match_list[matches++] = strdup(retstr);
}
if (!match_list)
return (char **) NULL;
if (matches>= match_list_len)
match_list = realloc(match_list, (match_list_len + 1) * sizeof(char *));
match_list[matches] = (char *) NULL;
return match_list;
}
static int ast_el_sort_compare(const void *i1, const void *i2)
{
char *s1, *s2;
s1 = ((char **)i1)[0];
s2 = ((char **)i2)[0];
return strcasecmp(s1, s2);
}
static int ast_cli_display_match_list(char **matches, int len, int max)
{
int i, idx, limit, count;
int screenwidth = 0;
int numoutput = 0, numoutputline = 0;
screenwidth = ast_get_termcols(STDOUT_FILENO);
/* find out how many entries can be put on one line, with two spaces between strings */
limit = screenwidth / (max + 2);
if (limit == 0)
limit = 1;
/* how many lines of output */
count = len / limit;
if (count * limit < len)
count++;
idx = 1;
qsort(&matches[0], (size_t)(len + 1), sizeof(char *), ast_el_sort_compare);
for (; count > 0; count--) {
numoutputline = 0;
for (i=0; i < limit && matches[idx]; i++, idx++) {
/* Don't print dupes */
if ( (matches[idx+1] != NULL && strcmp(matches[idx], matches[idx+1]) == 0 ) ) {
i--;
free(matches[idx]);
matches[idx] = NULL;
continue;
}
numoutput++;
numoutputline++;
fprintf(stdout, "%-*s ", max, matches[idx]);
free(matches[idx]);
matches[idx] = NULL;
}
if (numoutputline > 0)
fprintf(stdout, "\n");
}
return numoutput;
}
static char *cli_complete(EditLine *el, int ch)
{
int len=0;
char *ptr;
int nummatches = 0;
char **matches;
int retval = CC_ERROR;
char buf[2048];
int res;
LineInfo *lf = (LineInfo *)el_line(el);
*(char *)lf->cursor = '\0';
ptr = (char *)lf->cursor;
if (ptr) {
while (ptr > lf->buffer) {
if (isspace(*ptr)) {
ptr++;
break;
}
ptr--;
}
}
len = lf->cursor - ptr;
if (option_remote) {
snprintf(buf, sizeof(buf),"_COMMAND NUMMATCHES \"%s\" \"%s\"", lf->buffer, ptr);
fdprint(ast_consock, buf);
res = read(ast_consock, buf, sizeof(buf));
buf[res] = '\0';
nummatches = atoi(buf);
if (nummatches > 0) {
char *mbuf;
int mlen = 0, maxmbuf = 2048;
/* Start with a 2048 byte buffer */
mbuf = malloc(maxmbuf);
if (!mbuf)
return (char *)(CC_ERROR);
snprintf(buf, sizeof(buf),"_COMMAND MATCHESARRAY \"%s\" \"%s\"", lf->buffer, ptr);
fdprint(ast_consock, buf);
res = 0;
mbuf[0] = '\0';
while (!strstr(mbuf, AST_CLI_COMPLETE_EOF) && res != -1) {
if (mlen + 1024 > maxmbuf) {
/* Every step increment buffer 1024 bytes */
maxmbuf += 1024;
mbuf = realloc(mbuf, maxmbuf);
if (!mbuf)
return (char *)(CC_ERROR);
}
/* Only read 1024 bytes at a time */
res = read(ast_consock, mbuf + mlen, 1024);
if (res > 0)
mlen += res;
}
mbuf[mlen] = '\0';
matches = ast_el_strtoarr(mbuf);
free(mbuf);
} else
matches = (char **) NULL;
} else {
nummatches = ast_cli_generatornummatches((char *)lf->buffer,ptr);
matches = ast_cli_completion_matches((char *)lf->buffer,ptr);
}
if (matches) {
int i;
int matches_num, maxlen, match_len;
if (matches[0][0] != '\0') {
el_deletestr(el, (int) len);
el_insertstr(el, matches[0]);
retval = CC_REFRESH;
}
if (nummatches == 1) {
/* Found an exact match */
el_insertstr(el, " ");
retval = CC_REFRESH;
} else {
/* Must be more than one match */
for (i=1, maxlen=0; matches[i]; i++) {
match_len = strlen(matches[i]);
if (match_len > maxlen)
maxlen = match_len;
}
matches_num = i - 1;
if (matches_num >1) {
fprintf(stdout, "\n");
ast_cli_display_match_list(matches, nummatches, maxlen);
retval = CC_REDISPLAY;
} else {
el_insertstr(el," ");
retval = CC_REFRESH;
}
}
free(matches);
}
return (char *)(long)retval;
}
static int ast_el_initialize(void)
{
HistEvent ev;
char *editor = getenv("AST_EDITOR");
if (el != NULL)
el_end(el);
if (el_hist != NULL)
history_end(el_hist);
el = el_init("asterisk", stdin, stdout, stderr);
el_set(el, EL_PROMPT, cli_prompt);
el_set(el, EL_EDITMODE, 1);
el_set(el, EL_EDITOR, editor ? editor : "emacs");
el_hist = history_init();
if (!el || !el_hist)
return -1;
/* setup history with 100 entries */
history(el_hist, &ev, H_SETSIZE, 100);
el_set(el, EL_HIST, history, el_hist);
el_set(el, EL_ADDFN, "ed-complete", "Complete argument", cli_complete);
/* Bind <tab> to command completion */
el_set(el, EL_BIND, "^I", "ed-complete", NULL);
/* Bind ? to command completion */
el_set(el, EL_BIND, "?", "ed-complete", NULL);
/* Bind ^D to redisplay */
el_set(el, EL_BIND, "^D", "ed-redisplay", NULL);
return 0;
}
static int ast_el_add_history(char *buf)
{
HistEvent ev;
if (el_hist == NULL || el == NULL)
ast_el_initialize();
if (strlen(buf) > 256)
return 0;
return (history(el_hist, &ev, H_ENTER, buf));
}
static int ast_el_write_history(char *filename)
{
HistEvent ev;
if (el_hist == NULL || el == NULL)
ast_el_initialize();
return (history(el_hist, &ev, H_SAVE, filename));
}
static int ast_el_read_history(char *filename)
{
char buf[256];
FILE *f;
int ret = -1;
if (el_hist == NULL || el == NULL)
ast_el_initialize();
if ((f = fopen(filename, "r")) == NULL)
return ret;
while (!feof(f)) {
fgets(buf, sizeof(buf), f);
if (!strcmp(buf, "_HiStOrY_V2_\n"))
continue;
if (ast_all_zeros(buf))
continue;
if ((ret = ast_el_add_history(buf)) == -1)
break;
}
fclose(f);
return ret;
}
static void ast_remotecontrol(char * data)
{
char buf[80];
int res;
char filename[80] = "";
char *hostname;
char *cpid;
char *version;
int pid;
char tmp[80];
char *stringp=NULL;
char *ebuf;
int num = 0;
read(ast_consock, buf, sizeof(buf));
if (data)
write(ast_consock, data, strlen(data) + 1);
stringp=buf;
hostname = strsep(&stringp, "/");
cpid = strsep(&stringp, "/");
version = strsep(&stringp, "\n");
if (!version)
version = "<Version Unknown>";
stringp=hostname;
strsep(&stringp, ".");
if (cpid)
pid = atoi(cpid);
else
pid = -1;
snprintf(tmp, sizeof(tmp), "set verbose atleast %d", option_verbose);
fdprint(ast_consock, tmp);
snprintf(tmp, sizeof(tmp), "set debug atleast %d", option_debug);
fdprint(ast_consock, tmp);
ast_verbose("Connected to Asterisk %s currently running on %s (pid = %d)\n", version, hostname, pid);
remotehostname = hostname;
if (getenv("HOME"))
snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
if (el_hist == NULL || el == NULL)
ast_el_initialize();
el_set(el, EL_GETCFN, ast_el_read_char);
if (!ast_strlen_zero(filename))
ast_el_read_history(filename);
if (option_exec && data) { /* hack to print output then exit if asterisk -rx is used */
char tempchar;
struct pollfd fds[0];
fds[0].fd = ast_consock;
fds[0].events = POLLIN;
fds[0].revents = 0;
while(poll(fds, 1, 100) > 0) {
ast_el_read_char(el, &tempchar);
}
return;
}
for(;;) {
ebuf = (char *)el_gets(el, &num);
if (!ast_strlen_zero(ebuf)) {
if (ebuf[strlen(ebuf)-1] == '\n')
ebuf[strlen(ebuf)-1] = '\0';
if (!remoteconsolehandler(ebuf)) {
res = write(ast_consock, ebuf, strlen(ebuf) + 1);
if (res < 1) {
ast_log(LOG_WARNING, "Unable to write: %s\n", strerror(errno));
break;
}
}
}
}
printf("\nDisconnected from Asterisk server\n");
}
static int show_version(void)
{
printf("Asterisk " ASTERISK_VERSION "\n");
return 0;
}
static int show_cli_help(void) {
printf("Asterisk " ASTERISK_VERSION ", Copyright (C) 2000 - 2005, Digium.\n");
printf("Usage: asterisk [OPTIONS]\n");
printf("Valid Options:\n");
printf(" -V Display version number and exit\n");
printf(" -C <configfile> Use an alternate configuration file\n");
printf(" -G <group> Run as a group other than the caller\n");
printf(" -U <user> Run as a user other than the caller\n");
printf(" -c Provide console CLI\n");
printf(" -d Enable extra debugging\n");
printf(" -f Do not fork\n");
printf(" -g Dump core in case of a crash\n");
printf(" -h This help screen\n");
printf(" -i Initialize crypto keys at startup\n");
printf(" -n Disable console colorization\n");
printf(" -p Run as pseudo-realtime thread\n");
printf(" -q Quiet mode (suppress output)\n");
printf(" -r Connect to Asterisk on this machine\n");
printf(" -R Connect to Asterisk, and attempt to reconnect if disconnected\n");
printf(" -t Record soundfiles in /var/tmp and move them where they belong after they are done.\n");
printf(" -T Display the time in [Mmm dd hh:mm:ss] format for each line of output to the CLI.\n");
printf(" -v Increase verbosity (multiple v's = more verbose)\n");
printf(" -x <cmd> Execute command <cmd> (only valid with -r)\n");
printf("\n");
return 0;
}
static void ast_readconfig(void) {
struct ast_config *cfg;
struct ast_variable *v;
char *config = AST_CONFIG_FILE;
if (option_overrideconfig == 1) {
cfg = ast_config_load(ast_config_AST_CONFIG_FILE);
if (!cfg)
ast_log(LOG_WARNING, "Unable to open specified master config file '%s', using built-in defaults\n", ast_config_AST_CONFIG_FILE);
} else {
cfg = ast_config_load(config);
}
/* init with buildtime config */
ast_copy_string(ast_config_AST_CONFIG_DIR, AST_CONFIG_DIR, sizeof(ast_config_AST_CONFIG_DIR));
ast_copy_string(ast_config_AST_SPOOL_DIR, AST_SPOOL_DIR, sizeof(ast_config_AST_SPOOL_DIR));
ast_copy_string(ast_config_AST_MODULE_DIR, AST_MODULE_DIR, sizeof(ast_config_AST_VAR_DIR));
snprintf(ast_config_AST_MONITOR_DIR, sizeof(ast_config_AST_MONITOR_DIR) - 1, "%s/monitor", ast_config_AST_SPOOL_DIR);
ast_copy_string(ast_config_AST_VAR_DIR, AST_VAR_DIR, sizeof(ast_config_AST_VAR_DIR));
ast_copy_string(ast_config_AST_LOG_DIR, AST_LOG_DIR, sizeof(ast_config_AST_LOG_DIR));
ast_copy_string(ast_config_AST_AGI_DIR, AST_AGI_DIR, sizeof(ast_config_AST_AGI_DIR));
ast_copy_string(ast_config_AST_DB, AST_DB, sizeof(ast_config_AST_DB));
ast_copy_string(ast_config_AST_KEY_DIR, AST_KEY_DIR, sizeof(ast_config_AST_KEY_DIR));
ast_copy_string(ast_config_AST_PID, AST_PID, sizeof(ast_config_AST_PID));
ast_copy_string(ast_config_AST_SOCKET, AST_SOCKET, sizeof(ast_config_AST_SOCKET));
ast_copy_string(ast_config_AST_RUN_DIR, AST_RUN_DIR, sizeof(ast_config_AST_RUN_DIR));
/* no asterisk.conf? no problem, use buildtime config! */
if (!cfg) {
return;
}
v = ast_variable_browse(cfg, "files");
while (v) {
if (!strcasecmp(v->name, "astctlpermissions")) {
ast_copy_string(ast_config_AST_CTL_PERMISSIONS, v->value, sizeof(ast_config_AST_CTL_PERMISSIONS));
} else if (!strcasecmp(v->name, "astctlowner")) {
ast_copy_string(ast_config_AST_CTL_OWNER, v->value, sizeof(ast_config_AST_CTL_OWNER));
} else if (!strcasecmp(v->name, "astctlgroup")) {
ast_copy_string(ast_config_AST_CTL_GROUP, v->value, sizeof(ast_config_AST_CTL_GROUP));
} else if (!strcasecmp(v->name, "astctl")) {
ast_copy_string(ast_config_AST_CTL, v->value, sizeof(ast_config_AST_CTL));
}
v = v->next;
}
v = ast_variable_browse(cfg, "directories");
while(v) {
if (!strcasecmp(v->name, "astetcdir")) {
ast_copy_string(ast_config_AST_CONFIG_DIR, v->value, sizeof(ast_config_AST_CONFIG_DIR));
} else if (!strcasecmp(v->name, "astspooldir")) {
ast_copy_string(ast_config_AST_SPOOL_DIR, v->value, sizeof(ast_config_AST_SPOOL_DIR));
snprintf(ast_config_AST_MONITOR_DIR, sizeof(ast_config_AST_MONITOR_DIR) - 1, "%s/monitor", v->value);
} else if (!strcasecmp(v->name, "astvarlibdir")) {
ast_copy_string(ast_config_AST_VAR_DIR, v->value, sizeof(ast_config_AST_VAR_DIR));
snprintf(ast_config_AST_DB, sizeof(ast_config_AST_DB), "%s/%s", v->value, "astdb");
} else if (!strcasecmp(v->name, "astlogdir")) {
ast_copy_string(ast_config_AST_LOG_DIR, v->value, sizeof(ast_config_AST_LOG_DIR));
} else if (!strcasecmp(v->name, "astagidir")) {
ast_copy_string(ast_config_AST_AGI_DIR, v->value, sizeof(ast_config_AST_AGI_DIR));
} else if (!strcasecmp(v->name, "astrundir")) {
snprintf(ast_config_AST_PID, sizeof(ast_config_AST_PID), "%s/%s", v->value, "asterisk.pid");
snprintf(ast_config_AST_SOCKET, sizeof(ast_config_AST_SOCKET), "%s/%s", v->value, ast_config_AST_CTL);
ast_copy_string(ast_config_AST_RUN_DIR, v->value, sizeof(ast_config_AST_RUN_DIR));
} else if (!strcasecmp(v->name, "astmoddir")) {
ast_copy_string(ast_config_AST_MODULE_DIR, v->value, sizeof(ast_config_AST_MODULE_DIR));
}
v = v->next;
}
v = ast_variable_browse(cfg, "options");
while(v) {
/* verbose level (-v at startup) */
if (!strcasecmp(v->name, "verbose")) {
option_verbose = atoi(v->value);
/* whether or not to force timestamping. (-T at startup) */
} else if (!strcasecmp(v->name, "timestamp")) {
option_timestamp = ast_true(v->value);
/* whether or not to support #exec in config files */
} else if (!strcasecmp(v->name, "execincludes")) {
option_exec_includes = ast_true(v->value);
/* debug level (-d at startup) */
} else if (!strcasecmp(v->name, "debug")) {
option_debug = 0;
if (sscanf(v->value, "%d", &option_debug) != 1) {
option_debug = ast_true(v->value);
}
/* Disable forking (-f at startup) */
} else if (!strcasecmp(v->name, "nofork")) {
option_nofork = ast_true(v->value);
/* Run quietly (-q at startup ) */
} else if (!strcasecmp(v->name, "quiet")) {
option_quiet = ast_true(v->value);
/* Run as console (-c at startup, implies nofork) */
} else if (!strcasecmp(v->name, "console")) {
option_console = ast_true(v->value);
/* Run with highg priority if the O/S permits (-p at startup) */
} else if (!strcasecmp(v->name, "highpriority")) {
option_highpriority = ast_true(v->value);
/* Initialize RSA auth keys (IAX2) (-i at startup) */
} else if (!strcasecmp(v->name, "initcrypto")) {
option_initcrypto = ast_true(v->value);
/* Disable ANSI colors for console (-c at startup) */
} else if (!strcasecmp(v->name, "nocolor")) {
option_nocolor = ast_true(v->value);
/* Disable some usage warnings for picky people :p */
} else if (!strcasecmp(v->name, "dontwarn")) {
option_dontwarn = ast_true(v->value);
/* Dump core in case of crash (-g) */
} else if (!strcasecmp(v->name, "dumpcore")) {
option_dumpcore = ast_true(v->value);
/* Cache recorded sound files to another directory during recording */
} else if (!strcasecmp(v->name, "cache_record_files")) {
option_cache_record_files = ast_true(v->value);
/* Specify cache directory */
} else if (!strcasecmp(v->name, "record_cache_dir")) {
ast_copy_string(record_cache_dir, v->value, AST_CACHE_DIR_LEN);
/* Build transcode paths via SLINEAR, instead of directly */
} else if (!strcasecmp(v->name, "transcode_via_sln")) {
option_transcode_slin = ast_true(v->value);
/* Transmit SLINEAR silence while a channel is being recorded */
} else if (!strcasecmp(v->name, "transmit_silence_during_record")) {
option_transmit_silence_during_record = ast_true(v->value);
} else if (!strcasecmp(v->name, "maxcalls")) {
if ((sscanf(v->value, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0)) {
option_maxcalls = 0;
}
} else if (!strcasecmp(v->name, "maxload")) {
double test[1];
if (getloadavg(test, 1) == -1) {
ast_log(LOG_ERROR, "Cannot obtain load average on this system. 'maxload' option disabled.\n");
option_maxload = 0.0;
} else if ((sscanf(v->value, "%lf", &option_maxload) != 1) || (option_maxload < 0.0)) {
option_maxload = 0.0;
}
/* What user to run as */
} else if (!strcasecmp(v->name, "runuser")) {
ast_copy_string(ast_config_AST_RUN_USER, v->value, sizeof(ast_config_AST_RUN_USER));
/* What group to run as */
} else if (!strcasecmp(v->name, "rungroup")) {
ast_copy_string(ast_config_AST_RUN_GROUP, v->value, sizeof(ast_config_AST_RUN_GROUP));
}
v = v->next;
}
ast_config_destroy(cfg);
}
int main(int argc, char *argv[])
{
int c;
char filename[80] = "";
char hostname[MAXHOSTNAMELEN]="";
char tmp[80];
char * xarg = NULL;
int x;
FILE *f;
sigset_t sigs;
int num;
int is_child_of_nonroot=0;
char *buf;
char *runuser=NULL, *rungroup=NULL;
/* Remember original args for restart */
if (argc > sizeof(_argv) / sizeof(_argv[0]) - 1) {
fprintf(stderr, "Truncating argument size to %d\n", (int)(sizeof(_argv) / sizeof(_argv[0])) - 1);
argc = sizeof(_argv) / sizeof(_argv[0]) - 1;
}
for (x=0;x<argc;x++)
_argv[x] = argv[x];
_argv[x] = NULL;
/* if the progname is rasterisk consider it a remote console */
if (argv[0] && (strstr(argv[0], "rasterisk")) != NULL) {
option_remote++;
option_nofork++;
}
if (gethostname(hostname, sizeof(hostname)-1))
ast_copy_string(hostname, "<Unknown>", sizeof(hostname));
ast_mainpid = getpid();
ast_ulaw_init();
ast_alaw_init();
callerid_init();
ast_utils_init();
tdd_init();
/* When Asterisk restarts after it has dropped the root privileges,
* it can't issue setuid(), setgid(), setgroups() or set_priority()
* */
if (getenv("ASTERISK_ALREADY_NONROOT"))
is_child_of_nonroot=1;
if (getenv("HOME"))
snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
/* Check if we're root */
/*
if (geteuid()) {
ast_log(LOG_ERROR, "Must be run as root\n");
exit(1);
}
*/
/* Check for options */
while((c=getopt(argc, argv, "tThfdvVqprRgcinx:U:G:C:L:M:")) != -1) {
switch(c) {
case 'd':
option_debug++;
option_nofork++;
break;
case 'c':
option_console++;
option_nofork++;
break;
case 'f':
option_nofork++;
break;
case 'n':
option_nocolor++;
break;
case 'r':
option_remote++;
option_nofork++;
break;
case 'R':
option_remote++;
option_nofork++;
option_reconnect++;
break;
case 'p':
option_highpriority++;
break;
case 'v':
option_verbose++;
option_nofork++;
break;
case 'M':
if ((sscanf(optarg, "%d", &option_maxcalls) != 1) || (option_maxcalls < 0))
option_maxcalls = 0;
break;
case 'L':
if ((sscanf(optarg, "%lf", &option_maxload) != 1) || (option_maxload < 0.0))
option_maxload = 0.0;
break;
case 'q':
option_quiet++;
break;
case 't':
option_cache_record_files++;
break;
case 'T':
option_timestamp++;
break;
case 'x':
option_exec++;
xarg = optarg;
break;
case 'C':
ast_copy_string((char *)ast_config_AST_CONFIG_FILE,optarg,sizeof(ast_config_AST_CONFIG_FILE));
option_overrideconfig++;
break;
case 'i':
option_initcrypto++;
break;
case'g':
option_dumpcore++;
break;
case 'h':
show_cli_help();
exit(0);
case 'V':
show_version();
exit(0);
case 'U':
runuser = optarg;
break;
case 'G':
rungroup = optarg;
break;
case '?':
exit(1);
}
}
/* For remote connections, change the name of the remote connection.
* We do this for the benefit of init scripts (which need to know if/when
* the main asterisk process has died yet). */
if (option_remote) {
strcpy(argv[0], "rasterisk");
for (x = 1; x < argc; x++) {
argv[x] = argv[0] + 10;
}
}
if (option_dumpcore) {
struct rlimit l;
memset(&l, 0, sizeof(l));
l.rlim_cur = RLIM_INFINITY;
l.rlim_max = RLIM_INFINITY;
if (setrlimit(RLIMIT_CORE, &l)) {
ast_log(LOG_WARNING, "Unable to disable core size resource limit: %s\n", strerror(errno));
}
}
if (option_console && !option_verbose)
ast_verbose("[ Reading Master Configuration ]");
ast_readconfig();
if ((!rungroup) && !ast_strlen_zero(ast_config_AST_RUN_GROUP))
rungroup = ast_config_AST_RUN_GROUP;
if ((!runuser) && !ast_strlen_zero(ast_config_AST_RUN_USER))
runuser = ast_config_AST_RUN_USER;
#ifndef __CYGWIN__
if (!is_child_of_nonroot)
ast_set_priority(option_highpriority);
if (!is_child_of_nonroot && rungroup) {
struct group *gr;
gr = getgrnam(rungroup);
if (!gr) {
ast_log(LOG_WARNING, "No such group '%s'!\n", rungroup);
exit(1);
}
if (setgid(gr->gr_gid)) {
ast_log(LOG_WARNING, "Unable to setgid to %d (%s)\n", gr->gr_gid, rungroup);
exit(1);
}
if (setgroups(0, NULL)) {
ast_log(LOG_WARNING, "Unable to drop unneeded groups\n");
exit(1);
}
if (option_verbose)
ast_verbose("Running as group '%s'\n", rungroup);
}
if (!is_child_of_nonroot && runuser) {
struct passwd *pw;
pw = getpwnam(runuser);
if (!pw) {
ast_log(LOG_WARNING, "No such user '%s'!\n", runuser);
exit(1);
}
if (setuid(pw->pw_uid)) {
ast_log(LOG_WARNING, "Unable to setuid to %d (%s)\n", pw->pw_uid, runuser);
exit(1);
}
setenv("ASTERISK_ALREADY_NONROOT","yes",1);
if (option_verbose)
ast_verbose("Running as user '%s'\n", runuser);
}
#endif /* __CYGWIN__ */
term_init();
printf(term_end());
fflush(stdout);
if (option_console && !option_verbose)
ast_verbose("[ Initializing Custom Configuration Options ]");
/* custom config setup */
register_config_cli();
read_config_maps();
if (option_console) {
if (el_hist == NULL || el == NULL)
ast_el_initialize();
if (!ast_strlen_zero(filename))
ast_el_read_history(filename);
}
if (ast_tryconnect()) {
/* One is already running */
if (option_remote) {
if (option_exec) {
ast_remotecontrol(xarg);
quit_handler(0, 0, 0, 0);
exit(0);
}
printf(term_quit());
ast_register_verbose(console_verboser);
WELCOME_MESSAGE;
ast_remotecontrol(NULL);
quit_handler(0, 0, 0, 0);
exit(0);
} else {
ast_log(LOG_ERROR, "Asterisk already running on %s. Use 'asterisk -r' to connect.\n", (char *)ast_config_AST_SOCKET);
printf(term_quit());
exit(1);
}
} else if (option_remote || option_exec) {
ast_log(LOG_ERROR, "Unable to connect to remote asterisk (does %s exist?)\n",ast_config_AST_SOCKET);
printf(term_quit());
exit(1);
}
/* Blindly write pid file since we couldn't connect */
unlink((char *)ast_config_AST_PID);
f = fopen((char *)ast_config_AST_PID, "w");
if (f) {
fprintf(f, "%d\n", getpid());
fclose(f);
} else
ast_log(LOG_WARNING, "Unable to open pid file '%s': %s\n", (char *)ast_config_AST_PID, strerror(errno));
if (!option_verbose && !option_debug && !option_nofork && !option_console) {
daemon(0,0);
/* Blindly re-write pid file since we are forking */
unlink((char *)ast_config_AST_PID);
f = fopen((char *)ast_config_AST_PID, "w");
if (f) {
fprintf(f, "%d\n", getpid());
fclose(f);
} else
ast_log(LOG_WARNING, "Unable to open pid file '%s': %s\n", (char *)ast_config_AST_PID, strerror(errno));
}
/* Test recursive mutex locking. */
if (test_for_thread_safety())
ast_verbose("Warning! Asterisk is not thread safe.\n");
ast_makesocket();
sigemptyset(&sigs);
sigaddset(&sigs, SIGHUP);
sigaddset(&sigs, SIGTERM);
sigaddset(&sigs, SIGINT);
sigaddset(&sigs, SIGPIPE);
sigaddset(&sigs, SIGWINCH);
pthread_sigmask(SIG_BLOCK, &sigs, NULL);
if (option_console || option_verbose || option_remote)
ast_register_verbose(console_verboser);
/* Print a welcome message if desired */
if (option_verbose || option_console) {
WELCOME_MESSAGE;
}
if (option_console && !option_verbose)
ast_verbose("[ Booting...");
signal(SIGURG, urg_handler);
signal(SIGINT, __quit_handler);
signal(SIGTERM, __quit_handler);
signal(SIGHUP, hup_handler);
signal(SIGCHLD, child_handler);
signal(SIGPIPE, SIG_IGN);
/* ensure that the random number generators are seeded with a different value every time
Asterisk is started
*/
srand((unsigned int) getpid() + (unsigned int) time(NULL));
srandom((unsigned int) getpid() + (unsigned int) time(NULL));
if (init_logger()) {
printf(term_quit());
exit(1);
}
if (dnsmgr_init()) {
printf(term_quit());
exit(1);
}
/* load 'preload' modules, required for access to Realtime-mapped configuration files */
if (load_modules(1)) {
printf(term_quit());
exit(1);
}
ast_channels_init();
if (init_manager()) {
printf(term_quit());
exit(1);
}
if (ast_cdr_engine_init()) {
printf(term_quit());
exit(1);
}
if (ast_device_state_engine_init()) {
printf(term_quit());
exit(1);
}
ast_rtp_init();
if (ast_image_init()) {
printf(term_quit());
exit(1);
}
if (ast_file_init()) {
printf(term_quit());
exit(1);
}
if (load_pbx()) {
printf(term_quit());
exit(1);
}
if (load_modules(0)) {
printf(term_quit());
exit(1);
}
if (init_framer()) {
printf(term_quit());
exit(1);
}
if (astdb_init()) {
printf(term_quit());
exit(1);
}
if (ast_enum_init()) {
printf(term_quit());
exit(1);
}
dnsmgr_start_refresh();
#if 0
/* This should no longer be necessary */
/* sync cust config and reload some internals in case a custom config handler binded to them */
read_ast_cust_config();
reload_logger(0);
reload_manager();
ast_enum_reload();
ast_rtp_reload();
#endif
/* We might have the option of showing a console, but for now just
do nothing... */
if (option_console && !option_verbose)
ast_verbose(" ]\n");
if (option_verbose || option_console)
ast_verbose(term_color(tmp, "Asterisk Ready.\n", COLOR_BRWHITE, COLOR_BLACK, sizeof(tmp)));
if (option_nofork)
consolethread = pthread_self();
fully_booted = 1;
pthread_sigmask(SIG_UNBLOCK, &sigs, NULL);
#ifdef __AST_DEBUG_MALLOC
__ast_mm_init();
#endif
time(&ast_startuptime);
ast_cli_register_multiple(core_cli, sizeof(core_cli) / sizeof(core_cli[0]));
if (option_console) {
/* Console stuff now... */
/* Register our quit function */
char title[256];
set_icon("Asterisk");
snprintf(title, sizeof(title), "Asterisk Console on '%s' (pid %d)", hostname, ast_mainpid);
set_title(title);
for (;;) {
buf = (char *)el_gets(el, &num);
if (buf) {
if (buf[strlen(buf)-1] == '\n')
buf[strlen(buf)-1] = '\0';
consolehandler((char *)buf);
} else {
if (write(STDOUT_FILENO, "\nUse EXIT or QUIT to exit the asterisk console\n",
strlen("\nUse EXIT or QUIT to exit the asterisk console\n")) < 0) {
/* Whoa, stdout disappeared from under us... Make /dev/null's */
int fd;
fd = open("/dev/null", O_RDWR);
if (fd > -1) {
dup2(fd, STDOUT_FILENO);
dup2(fd, STDIN_FILENO);
} else
ast_log(LOG_WARNING, "Failed to open /dev/null to recover from dead console. Bad things will happen!\n");
break;
}
}
}
}
/* Do nothing */
for(;;) { /* apparently needed for the MACos */
struct pollfd p = { -1 /* no descriptor */, 0, 0 };
poll(&p, 0, -1);
}
return 0;
}
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