/
main.c
1479 lines (1312 loc) · 36.8 KB
/
main.c
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/*
* Copyright (C) 2001-2003 FhG Fokus
* Copyright (C) 2005-2006 Voice Sistem S.R.L
*
* This file is part of opensips, a free SIP server.
*
* opensips is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* opensips is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* History:
* -------
* 2002-01-29 argc/argv globalized via my_{argc|argv} (jiri)
* 2003-01-23 mhomed added (jiri)
* 2003-03-19 replaced all malloc/frees w/ pkg_malloc/pkg_free (andrei)
* 2003-03-29 pkg cleaners for fifo and script callbacks introduced (jiri)
* 2003-03-31 removed snmp part (obsolete & no place in core) (andrei)
* 2003-04-06 child_init called in all processes (janakj)
* 2003-04-08 init_mallocs split into init_{pkg,shm}_mallocs and
* init_shm_mallocs called after cmd. line parsing (andrei)
* 2003-04-15 added tcp_disable support (andrei)
* 2003-05-09 closelog() before openlog to force opening a new fd
* (needed on solaris) (andrei)
* 2003-06-11 moved all signal handlers init. in install_sigs and moved it
* after daemonize (so that we won't catch anymore our own
* SIGCHLD generated when becoming session leader) (andrei)
* changed is_main default value to 1 (andrei)
* 2003-06-28 kill_all_children is now used instead of kill(0, sig)
* see comment above it for explanations. (andrei)
* 2003-06-29 replaced port_no_str snprintf w/ int2str (andrei)
* 2003-10-10 added switch for config check (-c) (andrei)
* 2003-10-24 converted to the new socket_info lists (andrei)
* 2004-03-30 core dump is enabled by default
* added support for increasing the open files limit (andrei)
* 2004-04-28 sock_{user,group,uid,gid,mode} added
* user2uid() & user2gid() added (andrei)
* 2004-09-11 added timeout on children shutdown and final cleanup
* (if it takes more than 60s => something is definitely wrong
* => kill all or abort) (andrei)
* force a shm_unlock before cleaning-up, in case we have a
* crashed childvwhich still holds the lock (andrei)
* 2004-12-02 removed -p, extended -l to support [proto:]address[:port],
* added parse_phostport, parse_proto (andrei)
* 2005-06-16 always record the pid in pt[process_no].pid twice: once in the
* parent & once in the child to avoid a short window when one
* of them might use it "unset" (andrei)
* 2005-12-22 added tos configurability (thanks to Andreas Granig)
* 2006-04-26 2-stage TLS init: before and after config file parsing (klaus)
*/
/*!
* \file main.c
* \brief Command line parsing, initializiation and server startup.
*
* Contains methods for parsing the command line, the initialization of
* the execution environment (signals, config file parsing) and forking
* the TCP, UDP, timer and fifo children.
*/
#include "reactor_defs.h" /*keep this first*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <netdb.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <pwd.h>
#include <grp.h>
#include <signal.h>
#include <time.h>
#include <locale.h>
#include <sys/ioctl.h>
#include <net/if.h>
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#include "help_msg.h"
#include "config.h"
#include "cfg_pp.h"
#include "dprint.h"
#include "daemonize.h"
#include "route.h"
#include "bin_interface.h"
#include "globals.h"
#include "mem/mem.h"
#include "mem/shm_mem.h"
#include "mem/rpm_mem.h"
#include "sr_module.h"
#include "timer.h"
#include "ipc.h"
#include "parser/msg_parser.h"
#include "ip_addr.h"
#include "resolve.h"
#include "parser/parse_hname2.h"
#include "parser/digest/digest_parser.h"
#include "name_alias.h"
#include "hash_func.h"
#include "pt.h"
#include "script_cb.h"
#include "dset.h"
#include "blacklists.h"
#include "xlog.h"
#include "ipc.h"
#include "pt.h"
#include "ut.h"
#include "serialize.h"
#include "statistics.h"
#include "core_stats.h"
#include "pvar.h"
#include "poll_types.h"
#include "net/net_tcp.h"
#include "net/net_udp.h"
#include "version.h"
#include "mi/mi_core.h"
#include "db/db_insertq.h"
#include "cachedb/cachedb.h"
#include "net/trans.h"
#include "test/unit_tests.h"
/*
* when enabled ("-T" cmdline param), OpenSIPS startup will unfold as follows:
* - enable debug mode
* - fork workers normally
* - run all currently enabled unit tests
* - print the unit test summary
* - exit with 0 on success, non-zero otherwise
*/
int testing_framework;
static char* version=OPENSIPS_FULL_VERSION;
static char* flags=OPENSIPS_COMPILE_FLAGS;
#ifdef VERSION_NODATE
char compiled[] = "" ;
#else
#ifdef VERSION_DATE
const char compiled[] = VERSION_DATE ;
#else
const char compiled[] = __TIME__ " " __DATE__ ;
#endif
#endif
/**
* Print compile-time constants
*/
void print_ct_constants(void)
{
#ifdef ADAPTIVE_WAIT
printf("ADAPTIVE_WAIT_LOOPS=%d, ", ADAPTIVE_WAIT_LOOPS);
#endif
printf("MAX_RECV_BUFFER_SIZE %d, MAX_LISTEN %d,"
" MAX_URI_SIZE %d, BUF_SIZE %d\n",
MAX_RECV_BUFFER_SIZE, MAX_LISTEN, MAX_URI_SIZE,
BUF_SIZE );
printf("poll method support: %s.\n", poll_support);
#ifdef VERSIONTYPE
printf("%s revision: %s\n", VERSIONTYPE, THISREVISION);
#endif
}
/* global vars */
int own_pgid = 0; /* whether or not we have our own pgid (and it's ok
to use kill(0, sig) */
char* cfg_file = 0;
unsigned int maxbuffer = MAX_RECV_BUFFER_SIZE; /* maximum buffer size we do
not want to exceed during the
auto-probing procedure; may
be re-configured */
/* number of UDP workers processing requests */
int udp_workers_no = UDP_WORKERS_NO;
/* if the auto-scaling engine is enabled or not - this is autodetected */
int auto_scaling_enabled = 0;
/* auto-scaling sampling and checking time cycle is 1 sec by default */
int auto_scaling_cycle = 1;
/*!< by default choose the best method */
enum poll_types io_poll_method=0;
/* last signal received */
int sig_flag = 0;
/* activate debug mode */
int debug_mode = 0;
/* do not become daemon, stay attached to the console */
int no_daemon_mode = 0;
/* assertion statements in script. disabled by default */
int enable_asserts = 0;
/* abort process on failed assertion. disabled by default */
int abort_on_assert = 0;
/* start by logging to stderr */
int log_stderr = 1;
/* log facility (see syslog(3)) */
int log_facility = LOG_DAEMON;
/* the id to be printed in syslog */
char *log_name = 0;
int config_check = 0;
/* check if reply first via host==us */
int check_via = 0;
/* debugging level for memory stats */
int memlog = L_DBG + 11;
int memdump = L_DBG + 10;
/* debugging in case msg processing takes. too long disabled by default */
int execmsgthreshold = 0;
/* debugging in case dns takes too long. disabled by default */
int execdnsthreshold = 0;
/* debugging in case tcp stuff take too long. disabled by default */
int tcpthreshold = 0;
/* should replies include extensive warnings? by default yes,
good for trouble-shooting
*/
int sip_warning = 0;
/* should localy-generated messages include server's signature? */
int server_signature=1;
/* Server header to be used when proxy generates request as UAS.
Default is to use SERVER_HDR CRLF (assigned later).
*/
str server_header = {SERVER_HDR,sizeof(SERVER_HDR)-1};
/* User-Agent header to be used when proxy generates request as UAC.
Default is to use USER_AGENT CRLF (assigned later).
*/
str user_agent_header = {USER_AGENT,sizeof(USER_AGENT)-1};
/* should opensips try to locate outbound interface on multihomed
* host? by default not -- too expensive
*/
int mhomed=0;
/* use dns and/or rdns or to see if we need to add
a ;received=x.x.x.x to via: */
int received_dns = 0;
char* working_dir = 0;
char* chroot_dir = 0;
char* user=0;
char* group=0;
int uid = 0;
int gid = 0;
/* more config stuff */
int disable_core_dump=0; /* by default enabled */
int open_files_limit=-1; /* don't touch it by default */
#ifdef USE_MCAST
int mcast_loopback = 0;
int mcast_ttl = -1; /* if -1, don't touch it, use the default (usually 1) */
#endif /* USE_MCAST */
int tos = IPTOS_LOWDELAY;
struct socket_info* bind_address=0; /* pointer to the crt. proc.
listening address*/
/* if aliases should be automatically discovered and added
* during fixing listening sockets */
int auto_aliases=1;
/* if the stateless forwarding support in core should be
* disabled or not */
int sl_fwd_disabled=-1;
/* process number - 0 is the main process */
int process_no = 0;
/* cfg parsing */
int cfg_errors=0;
/* start-up time */
time_t startup_time = 0;
/* shared memory (in MB) */
unsigned long shm_mem_size=SHM_MEM_SIZE * 1024 * 1024;
unsigned int shm_hash_split_percentage = DEFAULT_SHM_HASH_SPLIT_PERCENTAGE;
unsigned int shm_secondary_hash_size = DEFAULT_SHM_SECONDARY_HASH_SIZE;
/* packaged memory (in MB) */
unsigned long pkg_mem_size=PKG_MEM_SIZE * 1024 * 1024;
/* export command-line to anywhere else */
int my_argc;
char **my_argv;
int is_main = 1; /* flag = is this the "main" process? */
char* pid_file = 0; /* filename as asked by user */
char* pgid_file = 0;
/**
* Clean up on exit. This should be called before exiting.
* \param show_status set to one to display the mem status
*/
void cleanup(int show_status)
{
LM_INFO("cleanup\n");
/*clean-up*/
/* hack: force-unlock the shared memory lock(s) in case
some process crashed and let it locked; this will
allow an almost gracious shutdown */
if (0
#if defined F_MALLOC || defined Q_MALLOC
|| mem_lock
#endif
#ifdef HP_MALLOC
|| mem_locks
#endif
) {
#if defined HP_MALLOC && (defined F_MALLOC || defined Q_MALLOC)
if (mem_allocator_shm == MM_HP_MALLOC ||
mem_allocator_shm == MM_HP_MALLOC_DBG) {
int i;
for (i = 0; i < HP_HASH_SIZE; i++)
lock_release(&mem_locks[i]);
} else {
shm_unlock();
}
#elif defined HP_MALLOC
int i;
for (i = 0; i < HP_HASH_SIZE; i++)
lock_release(&mem_locks[i]);
#else
shm_unlock();
#endif
}
handle_ql_shutdown();
destroy_modules();
udp_destroy();
tcp_destroy();
destroy_timer();
destroy_stats_collector();
destroy_script_cb();
pv_free_extra_list();
tr_free_extra_list();
destroy_argv_list();
destroy_black_lists();
#ifdef PKG_MALLOC
if (show_status){
LM_GEN1(memdump, "Memory status (pkg):\n");
pkg_status();
}
#endif
cleanup_log_level();
if (pt && (0
#if defined F_MALLOC || defined Q_MALLOC
|| mem_lock
#endif
#ifdef HP_MALLOC
|| mem_locks
#endif
))
shm_free(pt);
pt=0;
if (show_status){
LM_GEN1(memdump, "Memory status (shm):\n");
shm_status();
}
/* zero all shmem alloc vars that we still use */
shm_mem_destroy();
if (pid_file) unlink(pid_file);
if (pgid_file) unlink(pgid_file);
}
/**
* Send a signal to all child processes
* \param signum signal for killing the children
*/
static void kill_all_children(int signum)
{
int r;
if (!pt)
return;
for (r = 1; r < counted_max_processes; r++) {
if (pt[r].pid == -1 || (pt[r].flags & OSS_PROC_DOING_DUMP))
continue;
/* as the PIDs are filled in by child processes, a 0 PID means
* an un-initalized procees; killing an uninitialized proc is
* very dangerous, so better wait for it to finish its init
* sequence by blocking until the pid is populated */
while (pt[r].pid == 0)
usleep(1000);
kill(pt[r].pid, signum);
}
}
/**
* SIGALRM "timeout" handler during the attendant's final cleanup,
* try to leave a core for future diagnostics.
*/
static void sig_alarm_abort(int signo)
{
/* LOG is not signal safe, but who cares, we are abort-ing anyway :-) */
LM_CRIT("BUG - shutdown timeout triggered, dying...\n");
abort();
}
/* RPC function send by main process to all worker processes supporting
* IPC in order to force a gracefull termination
*/
static void rpc_process_terminate(int sender_id, void *code)
{
#ifdef PKG_MALLOC
LM_GEN1(memdump, "Memory status (pkg):\n");
pkg_status();
#endif
/* simply terminate the process */
LM_DBG("Process %d exiting with code %d...\n",
process_no, (int)(long)code);
exit( (int)(long)code );
}
/* Implements full shutdown sequence (terminate processes and cleanup)
* To be called ONLY from MAIN process, not from workers !!!
*/
static void shutdown_opensips( int status )
{
pid_t proc;
int i, n, p;
int chld_status;
set_osips_state( STATE_TERMINATING );
/* terminate all processes */
/* first we try to terminate the processes via the IPC channel */
for( i=1,n=0 ; i<counted_max_processes; i++) {
/* Depending on the processes status, its PID may be:
* -1 - process not forked yet
* 0 - process forked but not fully configured by core
* >0 - process fully running
*/
if (pt[i].pid!=-1) {
/* use IPC (if avaiable) for a graceful termination */
if ( IPC_FD_WRITE(i)>0 ) {
LM_DBG("Asking process %d [%s] to terminate\n", i, pt[i].desc);
if (ipc_send_rpc( i, rpc_process_terminate, (void*)0)<0) {
LM_ERR("failed to trigger RPC termination for "
"process %d\n", i );
}
} else {
while (pt[i].pid==0) usleep(1000);
kill(pt[i].pid, SIGTERM);
}
n++;
}
}
/* now wait for the processes to finish */
i = GRACEFUL_SHUTDOWN_TIMEOUT * 100;
while( i && n ) {
proc = waitpid( -1, &chld_status, WNOHANG);
if (proc<=0) {
/* no process exited so far, do a small sleep before retry */
usleep(10000);
i--;
} else {
if ( (p=get_process_ID_by_PID(proc)) == -1 ) {
LM_DBG("unknown child process %d ended. Ignoring\n",proc);
} else {
LM_INFO("process %d(%d) [%s] terminated, "
"still waiting for %d more\n", p, proc, pt[p].desc, n-1);
/* mark the child process as terminated / not running */
pt[p].pid = -1;
status |= chld_status;
n--;
}
}
}
if (i==0 && n!=0) {
LM_DBG("force termination for all processes\n");
kill_all_children(SIGKILL);
}
/* Only one process is running now. Clean up and return overall status */
signal(SIGALRM, sig_alarm_abort);
alarm(SHUTDOWN_TIMEOUT - i / 100);
cleanup(1);
alarm(0);
signal(SIGALRM, SIG_IGN);
dprint("Thank you for running " NAME "\n");
exit( status );
}
/**
* Signal handler for the server.
*/
void handle_sigs(void)
{
pid_t chld;
int chld_status,overall_status=0;
int i;
int do_exit;
switch(sig_flag){
case 0: break; /* do nothing*/
case SIGPIPE:
/* SIGPIPE might be rarely received on use of
exec module; simply ignore it
*/
case SIGUSR1:
case SIGUSR2:
case SIGHUP:
/* ignoring it*/
break;
case SIGINT:
case SIGTERM:
/* we end the program in all these cases */
if (sig_flag==SIGINT)
LM_DBG("SIGINT received, program terminates\n");
else
LM_DBG("SIGTERM received, program terminates\n");
shutdown_opensips( 0/*status*/ );
break;
case SIGCHLD:
do_exit = 0;
while ((chld=waitpid( -1, &chld_status, WNOHANG ))>0) {
/* is it a process we know about? */
if ( (i=get_process_ID_by_PID( chld )) == -1 ) {
LM_DBG("unknown child process %d ended. Ignoring\n",chld);
continue;
}
if (pt[i].flags & OSS_PROC_SELFEXIT) {
LM_NOTICE("process %d/%d did selfexit with "
"status %d\n", i, chld, WTERMSIG(chld_status));
reset_process_slot(i);
continue;
}
do_exit = 1;
/* process the signal */
overall_status |= chld_status;
LM_DBG("OpenSIPS exit status = %d\n",overall_status);
if (WIFEXITED(chld_status))
LM_INFO("child process %d exited normally,"
" status=%d\n", chld,
WEXITSTATUS(chld_status));
else if (WIFSIGNALED(chld_status)) {
LM_INFO("child process %d exited by a signal"
" %d\n", chld, WTERMSIG(chld_status));
#ifdef WCOREDUMP
LM_INFO("core was %sgenerated\n",
WCOREDUMP(chld_status) ? "" : "not " );
#endif
}else if (WIFSTOPPED(chld_status))
LM_INFO("child process %d stopped by a"
" signal %d\n", chld,
WSTOPSIG(chld_status));
/* mark the child process as terminated / not running */
pt[i].pid = -1;
}
if (!do_exit)
break;
LM_INFO("terminating due to SIGCHLD\n");
/* exit */
shutdown_opensips( overall_status );
break;
default:
LM_CRIT("unhandled signal %d\n", sig_flag);
}
sig_flag=0;
}
/* the initial SIGSEGV handler, provided by the OS */
static struct sigaction sa_sys_segv;
static char sa_sys_is_valid;
static inline int restore_segv_handler(void)
{
LM_DBG("restoring SIGSEGV handler...\n");
if (!sa_sys_is_valid)
return 1;
if (sigaction(SIGSEGV, &sa_sys_segv, NULL) < 0) {
LM_ERR("failed to restore system SIGSEGV handler\n");
return -1;
}
LM_DBG("successfully restored system SIGSEGV handler\n");
return 0;
}
/**
* Exit regulary on a specific signal.
* This is good for profiling which only works if exited regularly
* and not by default signal handlers
* \param signo The signal that should be handled
*/
static void sig_usr(int signo)
{
int status;
pid_t pid;
UNUSED(pid);
if (is_main){
if (signo == SIGSEGV) {
LM_CRIT("segfault in attendant (starter) process!\n");
if (restore_segv_handler() != 0)
exit(-1);
return;
}
if (sig_flag == 0)
sig_flag = signo;
else /* previous sig. not processed yet, ignoring? */
return;
}else{
/* process the important signals */
switch(signo){
case SIGPIPE:
case SIGINT:
case SIGUSR1:
case SIGUSR2:
case SIGHUP:
/* ignored*/
break;
case SIGTERM:
/* ignore any SIGTERM if not in shutdown sequance (this
* is marked by the attendent process) */
if (get_osips_state()!=STATE_TERMINATING)
return;
/* if some shutdown already in progress, ignore this one */
if (sig_flag==0) sig_flag=signo;
else return;
/* do the termination */
LM_INFO("signal %d received\n", signo);
/* print memory stats for non-main too */
#ifdef PKG_MALLOC
LM_GEN1(memdump, "Memory status (pkg):\n");
pkg_status();
#endif
exit(0);
break;
case SIGCHLD:
pid = waitpid(-1, &status, WNOHANG);
LM_DBG("SIGCHLD received from %ld (status=%d), ignoring\n",
(long)pid,status);
break;
case SIGSEGV:
/* looks like we ate some spicy SIP */
LM_CRIT("segfault in process pid: %d, id: %d\n",
pt[process_no].pid, process_no);
pt[process_no].flags |= OSS_PROC_DOING_DUMP;
if (restore_segv_handler() != 0)
exit(-1);
}
}
}
/**
* Install the signal handlers.
* \return 0 on success, -1 on error
*/
int install_sigs(void)
{
struct sigaction act;
memset(&act, 0, sizeof act);
act.sa_handler = sig_usr;
if (sigaction(SIGSEGV, &act, &sa_sys_segv) < 0) {
LM_INFO("failed to install custom SIGSEGV handler -- corefiles must "
"now be written within %d sec to avoid truncation!\n",
GRACEFUL_SHUTDOWN_TIMEOUT);
} else {
LM_DBG("override SIGSEGV handler: success\n");
sa_sys_is_valid = 1;
}
if (signal(SIGINT, sig_usr) == SIG_ERR ) {
LM_ERR("no SIGINT signal handler can be installed\n");
goto error;
}
/* if we debug and write to a pipe, we want to exit nicely too */
if (signal(SIGPIPE, sig_usr) == SIG_ERR ) {
LM_ERR("no SIGINT signal handler can be installed\n");
goto error;
}
if (signal(SIGUSR1, sig_usr) == SIG_ERR ) {
LM_ERR("no SIGUSR1 signal handler can be installed\n");
goto error;
}
if (signal(SIGCHLD , sig_usr) == SIG_ERR ) {
LM_ERR("no SIGCHLD signal handler can be installed\n");
goto error;
}
if (signal(SIGTERM , sig_usr) == SIG_ERR ) {
LM_ERR("no SIGTERM signal handler can be installed\n");
goto error;
}
if (signal(SIGHUP , sig_usr) == SIG_ERR ) {
LM_ERR("no SIGHUP signal handler can be installed\n");
goto error;
}
if (signal(SIGUSR2 , sig_usr) == SIG_ERR ) {
LM_ERR("no SIGUSR2 signal handler can be installed\n");
goto error;
}
return 0;
error:
return -1;
}
/**
* Main loop, forks the children, bind to addresses,
* handle signals.
* \return don't return on sucess, -1 on error
*/
static int main_loop(void)
{
static int chd_rank;
int* startup_done = NULL;
utime_t last_check = 0;
int rc;
chd_rank=0;
if (start_module_procs()!=0) {
LM_ERR("failed to fork module processes\n");
goto error;
}
if(startup_rlist.a) {/* if a startup route was defined */
startup_done = (int*)shm_malloc(sizeof(int));
if(startup_done == NULL) {
LM_ERR("No more shared memory\n");
goto error;
}
*startup_done = 0;
}
/* fork for the timer process*/
if (start_timer_processes()!=0) {
LM_CRIT("cannot start timer process(es)\n");
goto error;
}
/* fork all processes required by UDP network layer */
if (udp_start_processes( &chd_rank, startup_done)<0) {
LM_CRIT("cannot start UDP processes\n");
goto error;
}
/* fork all processes required by TCP network layer */
if (tcp_start_processes( &chd_rank, startup_done)<0) {
LM_CRIT("cannot start TCP processes\n");
goto error;
}
/* fork for the extra timer processes */
if (start_timer_extra_processes( &chd_rank )!=0) {
LM_CRIT("cannot start timer extra process(es)\n");
goto error;
}
/* fork the TCP listening process */
if (tcp_start_listener()<0) {
LM_CRIT("cannot start TCP listener process\n");
goto error;
}
/* this is the main process -> it shouldn't send anything */
bind_address=0;
if (startup_done) {
if (*startup_done==0)
LM_CRIT("BUG: startup route defined, but not run :( \n");
shm_free(startup_done);
}
set_osips_state( STATE_RUNNING );
/* main process left */
is_main=1;
set_proc_attrs("attendant");
pt[process_no].flags |= OSS_PROC_NO_IPC|OSS_PROC_NO_LOAD;
if (testing_framework) {
if (init_child(1) < 0) {
LM_ERR("error in init_child for PROC_MAIN\n");
report_failure_status();
goto error;
}
rc = run_unit_tests();
shutdown_opensips(rc);
}
if (init_child(PROC_MAIN) < 0) {
LM_ERR("error in init_child for PROC_MAIN\n");
report_failure_status();
goto error;
}
report_conditional_status( (!no_daemon_mode), 0);
if (auto_scaling_enabled) {
/* re-create the status pipes to collect the status of the
* dynamically forked processes */
if (create_status_pipe(1) < 0) {
LM_ERR("failed to create status pipe\n");
goto error;
}
/* keep both ends on the status pipe as we will keep forking
* processes, so we will need to pass write-end to the new children;
* of course, we will need the read-end, here in the main proc */
last_check = get_uticks();
}
for(;;){
handle_sigs();
if (auto_scaling_enabled) {
sleep( auto_scaling_cycle );
if ( (get_uticks()-last_check) >= auto_scaling_cycle*1000000) {
do_workers_auto_scaling();
last_check = get_uticks();
} else {
sleep_us( last_check + auto_scaling_cycle*1000000 -
get_uticks() );
}
} else
pause();
}
/*return 0; */
error:
is_main=1; /* if we are here, we are the "main process",
any forked children should exit with exit(-1) and not
ever use return */
report_failure_status();
return -1;
}
/**
* Main routine, start of the program execution.
* \param argc the number of arguments
* \param argv pointer to the arguments array
* \return don't return on sucess, -1 on error
* \see main_loop
*/
int main(int argc, char** argv)
{
/* configure by default logging to syslog */
int cfg_log_stderr = 1;
int c,r;
char *tmp, *preproc = NULL;
int tmp_len;
int port;
int proto;
int protos_no;
char *options;
int ret;
unsigned int seed;
int rfd;
/*init*/
ret=-1;
my_argc=argc; my_argv=argv;
/* process pkg mem size from command line */
opterr=0;
options="f:cCm:M:b:l:n:N:rRvdDFEVhw:t:u:g:p:P:G:W:o:a:k:s:"
#ifdef UNIT_TESTS
"T"
#endif
;
while((c=getopt(argc,argv,options))!=-1){
switch(c){
case 'M':
pkg_mem_size=strtol(optarg, &tmp, 10) * 1024 * 1024;
if (tmp &&(*tmp)){
LM_ERR("bad pkgmem size number: -m %s\n", optarg);
goto error00;
};
break;
case 'm':
shm_mem_size=strtol(optarg, &tmp, 10) * 1024 * 1024;
if (tmp &&(*tmp)){
LM_ERR("bad shmem size number: -m %s\n", optarg);
goto error00;
};
break;
case 'u':
user=optarg;
break;
case 'g':
group=optarg;
break;
case 'a':
if (set_global_mm(optarg) < 0) {
LM_ERR("current build does not support "
"this allocator (-a %s)\n", optarg);
goto error00;
}
break;
case 'k':
if (set_pkg_mm(optarg) < 0) {
LM_ERR("current build does not support "
"this allocator (-k %s)\n", optarg);
goto error00;
}
break;
case 's':
if (set_shm_mm(optarg) < 0) {
LM_ERR("current build does not support "
"this allocator (-s %s)\n", optarg);
goto error00;
}
break;
case 'e':
if (set_rpm_mm(optarg) < 0) {
LM_ERR("current build does not support "
"this allocator (-e %s)\n", optarg);
goto error00;
}
break;
}
}
/* get uid/gid */
if (user){
if (user2uid(&uid, &gid, user)<0){
LM_ERR("bad user name/uid number: -u %s\n", user);
goto error00;
}
}
if (group){
if (group2gid(&gid, group)<0){
LM_ERR("bad group name/gid number: -u %s\n", group);
goto error00;
}
}
/*init pkg mallocs (before parsing cfg but after parsing cmd line !)*/
if (init_pkg_mallocs()==-1)
goto error00;
init_route_lists();
/* we want to be sure that from now on, all the floating numbers are
* using the dot as separator. This is a real issue when printing the
* floats for SQL ops, where the dot must be used */
setlocale( LC_NUMERIC, "POSIX");