/
asterisk.c
executable file
·1685 lines (1500 loc) · 43.8 KB
/
asterisk.c
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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Top level source file for asterisk
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <unistd.h>
#include <stdlib.h>
#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/pbx.h>
#include <asterisk/enum.h>
#include <asterisk/rtp.h>
#include <sys/resource.h>
#include <fcntl.h>
#include <stdio.h>
#include <signal.h>
#include <sched.h>
#include <asterisk/io.h>
#include <asterisk/lock.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/select.h>
#include <sys/wait.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "editline/histedit.h"
#include "asterisk.h"
#include <asterisk/config.h>
#include <asterisk/lock.h>
#if defined(__FreeBSD__)
#include <netdb.h>
#endif
#define AST_MAX_CONNECTS 128
#define NUM_MSGS 64
int option_verbose=0;
int option_debug=0;
int option_nofork=0;
int option_quiet=0;
int option_console=0;
int option_highpriority=0;
int option_remote=0;
int option_exec=0;
int option_initcrypto=0;
int option_nocolor;
int option_dumpcore = 0;
int option_overrideconfig = 0;
int fully_booted = 0;
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;
static ast_mutex_t atexitslock = AST_MUTEX_INITIALIZER;
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_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];
static char *_argv[256];
static int shuttingdown = 0;
static int restartnow = 0;
static pthread_t consolethread = AST_PTHREADT_NULL;
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);
}
/*
* 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 */
{
ast_network_puts(s);
}
static pthread_t lthread;
static void *netconsole(void *vconsole)
{
struct console *con = vconsole;
char hostname[256];
char tmp[512];
int res;
int max;
fd_set rfds;
if (gethostname(hostname, sizeof(hostname)))
strncpy(hostname, "<Unknown>", sizeof(hostname)-1);
snprintf(tmp, sizeof(tmp), "%s/%d/%s\n", hostname, ast_mainpid, ASTERISK_VERSION);
fdprint(con->fd, tmp);
for(;;) {
FD_ZERO(&rfds);
FD_SET(con->fd, &rfds);
FD_SET(con->p[0], &rfds);
max = con->fd;
if (con->p[0] > max)
max = con->p[0];
res = ast_select(max + 1, &rfds, NULL, NULL, NULL);
if (res < 0) {
ast_log(LOG_WARNING, "select returned < 0: %s\n", strerror(errno));
continue;
}
if (FD_ISSET(con->fd, &rfds)) {
res = read(con->fd, tmp, sizeof(tmp));
if (res < 1) {
break;
}
tmp[res] = 0;
ast_cli_command(con->fd, tmp);
}
if (FD_ISSET(con->p[0], &rfds)) {
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 sun;
fd_set fds;
int s;
int len;
int x;
int flags;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
for(;;) {
if (ast_socket < 0)
return NULL;
FD_ZERO(&fds);
FD_SET(ast_socket, &fds);
s = ast_select(ast_socket + 1, &fds, NULL, NULL, NULL);
if (s < 0) {
if (errno != EINTR)
ast_log(LOG_WARNING, "Select returned error: %s\n", strerror(errno));
continue;
}
len = sizeof(sun);
s = accept(ast_socket, (struct sockaddr *)&sun, &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 (pthread_create(&consoles[x].t, &attr, netconsole, &consoles[x])) {
ast_log(LOG_ERROR, "Unable to spawn thread to handle connection\n");
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 sun;
int res;
int x;
for (x=0;x<AST_MAX_CONNECTS;x++)
consoles[x].fd = -1;
unlink((char *)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(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
strncpy(sun.sun_path, (char *)ast_config_AST_SOCKET, sizeof(sun.sun_path)-1);
res = bind(ast_socket, (struct sockaddr *)&sun, sizeof(sun));
if (res) {
ast_log(LOG_WARNING, "Unable to bind socket to %s: %s\n", (char *)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", (char *)ast_config_AST_SOCKET, strerror(errno));
close(ast_socket);
ast_socket = -1;
return -1;
}
ast_register_verbose(network_verboser);
pthread_create(<hread, NULL, listener, NULL);
return 0;
}
static int ast_tryconnect(void)
{
struct sockaddr_un sun;
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(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
strncpy(sun.sun_path, (char *)ast_config_AST_SOCKET, sizeof(sun.sun_path)-1);
res = connect(ast_consock, (struct sockaddr *)&sun, sizeof(sun));
if (res) {
close(ast_consock);
ast_consock = -1;
return 0;
} else
return 1;
}
static void urg_handler(int num)
{
/* Called by soft_hangup to interrupt the select, read, or other
system call. We don't actually need to do anything though. */
/* Cannot EVER ast_log from within a signal handler */
if (option_debug)
printf("Urgent handler\n");
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();
}
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");
}
static void set_title(char *text)
{
/* Set an X-term or screen title */
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);
}
static int set_priority(int pri)
{
struct sched_param sched;
memset(&sched, 0, sizeof(sched));
/* 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. */
#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;
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 (strlen(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;
/* 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) {
pthread_kill(consolethread, SIGHUP);
/* Give the signal handler some time to complete */
sleep(2);
} else
execvp(_argv[0], _argv);
}
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 select()ing console */
if (option_console && consolethread != AST_PTHREADT_NULL)
pthread_kill(consolethread, SIGURG);
}
static void consolehandler(char *s)
{
printf(term_end());
fflush(stdout);
/* Called when readline data is available */
if (s && strlen(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])
system(s+1);
else
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 && strlen(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])
system(s+1);
else
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 quit_help[] =
"Usage: quit\n"
" Exits Asterisk.\n";
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 no_more_quit(int fd, int argc, char *argv[])
{
if (argc != 1)
return RESULT_SHOWUSAGE;
ast_cli(fd, "The QUIT and EXIT commands may no longer be used to shutdown the PBX.\n"
"Please use STOP NOW instead, if you wish to shutdown the PBX.\n");
return RESULT_SUCCESS;
}
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 aborthalt = { { "abort", "halt", NULL }, handle_abort_halt, "Cancel a running halt", abort_halt_help };
static struct ast_cli_entry quit = { { "quit", NULL }, no_more_quit, "Exit Asterisk", quit_help };
static struct ast_cli_entry astexit = { { "exit", NULL }, no_more_quit, "Exit Asterisk", quit_help };
static struct ast_cli_entry astshutdownnow = { { "stop", "now", NULL }, handle_shutdown_now, "Shut down Asterisk immediately", shutdown_now_help };
static struct ast_cli_entry astshutdowngracefully = { { "stop", "gracefully", NULL }, handle_shutdown_gracefully, "Gracefully shut down Asterisk", shutdown_gracefully_help };
static struct ast_cli_entry astshutdownwhenconvenient = { { "stop", "when","convenient", NULL }, handle_shutdown_when_convenient, "Shut down Asterisk at empty call volume", shutdown_when_convenient_help };
static struct ast_cli_entry astrestartnow = { { "restart", "now", NULL }, handle_restart_now, "Restart Asterisk immediately", restart_now_help };
static struct ast_cli_entry astrestartgracefully = { { "restart", "gracefully", NULL }, handle_restart_gracefully, "Restart Asterisk gracefully", restart_gracefully_help };
static struct ast_cli_entry astrestartwhenconvenient= { { "restart", "when", "convenient", NULL }, handle_restart_when_convenient, "Restart Asterisk at empty call volume", restart_when_convenient_help };
static struct ast_cli_entry astbang = { { "!", NULL }, handle_bang, "Execute a shell command", bang_help };
static int ast_el_read_char(EditLine *el, char *cp)
{
int num_read=0;
int lastpos=0;
fd_set rfds;
int res;
int max;
char buf[512];
for (;;) {
FD_ZERO(&rfds);
FD_SET(ast_consock, &rfds);
max = ast_consock;
if (!option_exec) {
FD_SET(STDIN_FILENO, &rfds);
if (STDIN_FILENO > max)
max = STDIN_FILENO;
}
res = ast_select(max+1, &rfds, NULL, NULL, NULL);
if (res < 0) {
if (errno == EINTR)
continue;
ast_log(LOG_ERROR, "select failed: %s\n", strerror(errno));
break;
}
if (FD_ISSET(STDIN_FILENO, &rfds)) {
num_read = read(STDIN_FILENO, cp, 1);
if (num_read < 1) {
break;
} else
return (num_read);
}
if (FD_ISSET(ast_consock, &rfds)) {
res = read(ast_consock, buf, sizeof(buf) - 1);
/* if the remote side disappears exit */
if (res < 1) {
fprintf(stderr, "\nDisconnected from Asterisk server\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[80];
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--;
continue;
}
numoutput++; numoutputline++;
fprintf(stdout, "%-*s ", max, matches[idx]);
}
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';