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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <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/types.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 <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 "dprint.h"
#include "daemonize.h"
#include "route.h"
#include "udp_server.h"
#include "bin_interface.h"
#include "globals.h"
#include "mem/mem.h"
#ifdef SHM_MEM
#include "mem/shm_mem.h"
#endif
#include "sr_module.h"
#include "timer.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 "blacklists.h"
#include "pt.h"
#include "ut.h"
#include "serialize.h"
#include "statistics.h"
#include "core_stats.h"
#include "pvar.h"
#ifdef USE_TCP
#include "poll_types.h"
#include "tcp_init.h"
#include "tcp_conn.h"
#ifdef USE_TLS
#include "tls/tls_init.h"
#endif
#endif
#ifdef USE_SCTP
#include "sctp_server.h"
#endif
#include "version.h"
#include "mi/mi_core.h"
#include "db/db_insertq.h"
static char* version=OPENSIPS_FULL_VERSION;
static char* flags=OPENSIPS_COMPILE_FLAGS;
char compiled[]= __TIME__ " " __DATE__ ;
/**
* 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 );
#ifdef USE_TCP
printf("poll method support: %s.\n", poll_support);
#endif
#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 */
int children_no = 0; /* number of children processing requests */
#ifdef USE_TCP
int tcp_children_no = 0;
int tcp_disable = 0; /* 1 if tcp is disabled */
int tcp_crlf_pingpong = 1; /* 0: send CRLF pong to incoming CRLFCRLF ping */
int tcp_max_msg_chunks = TCP_CHILD_MAX_MSG_CHUNK; /* Max number of chunks that
we except to receive a SIP
message - anything above will
lead to the connection
being treat as broken & closed */
int tcp_max_msg_time = TCP_CHILD_MAX_MSG_TIME; /* Max number of seconds that
we except a full SIP message
to arrive in - anything above
will lead to the connection to
closed */
int tcp_async = 0; /* 1 if TCP connect & write should be async */
int tcp_async_local_connect_timeout = 10000; /* Number of microseconds that a
worker will block waiting for a local
connect - if connect op exceeds this, it
will get passed to TCP main*/
int tcp_async_local_write_timeout = 10000; /* Number of microseconds that a
worker will block waiting for a local
write - if write op exceeds this, it
will get passed to TCP main*/
int tcp_async_max_postponed_chunks = 32; /* maximum number of write chunks that
will be queued per TCP connection -
if we exceed this number, we just
drop the connection */
#endif
#ifdef USE_TLS
int tls_disable = 1; /* 1 if tls is disabled */
#endif
#ifdef USE_SCTP
int sctp_disable = 0; /* 1 if sctp is disabled */
#endif
int sig_flag = 0; /* last signal received */
#ifdef CHANGEABLE_DEBUG_LEVEL
int debug_init = L_NOTICE;
int *debug = &debug_init;
#else
int debug = L_NOTICE;
#endif
int dont_fork = 0;
int no_daemon_mode = 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 + 10;
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* udp_listen=0;
#ifdef USE_TCP
struct socket_info* tcp_listen=0;
#endif
#ifdef USE_TLS
struct socket_info* tls_listen=0;
#endif
#ifdef USE_SCTP
struct socket_info* sctp_listen=0;
#endif
struct socket_info* bind_address=0; /* pointer to the crt. proc.
listening address*/
struct socket_info* sendipv4; /* ipv4 socket to use when msg. comes from ipv6*/
struct socket_info* sendipv6; /* same as above for ipv6 */
#ifdef USE_TCP
struct socket_info* sendipv4_tcp;
struct socket_info* sendipv6_tcp;
#endif
#ifdef USE_TLS
struct socket_info* sendipv4_tls;
struct socket_info* sendipv6_tls;
#endif
#ifdef USE_SCTP
struct socket_info* sendipv4_sctp;
struct socket_info* sendipv6_sctp;
#endif
/* 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;
unsigned short port_no=0; /* default port*/
#ifdef USE_TLS
unsigned short tls_port_no=0; /* default port */
#endif
/* 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;
/*
* adaptive image of OpenSIPS's memory usage during runtime
* used to fragment the shared memory pool at daemon startup
*/
char *mem_warming_pattern_file;
int mem_warming_enabled;
/*
* percentage of shared memory which will be fragmented at startup
* common values are between [0, 75]
*/
int mem_warming_percentage = -1;
/* export command-line to anywhere else */
int my_argc;
char **my_argv;
extern FILE* yyin;
extern int yyparse();
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 in case
some process crashed and let it locked; this will
allow an almost gracious shutdown */
if (mem_lock)
#ifdef HP_MALLOC
{
int i;
for (i = 0; i < HP_HASH_SIZE; i++)
shm_unlock(i);
}
#else
shm_unlock();
#endif
handle_ql_shutdown();
destroy_modules();
#ifdef USE_TCP
destroy_tcp();
#endif
#ifdef USE_TLS
destroy_tls();
#endif
destroy_timer();
destroy_stats_collector();
destroy_script_cb();
pv_free_extra_list();
destroy_argv_list();
destroy_black_lists();
#ifdef CHANGEABLE_DEBUG_LEVEL
if (debug!=&debug_init) {
reset_proc_debug_level();
debug_init = *debug;
shm_free(debug);
debug = &debug_init;
}
#endif
#ifdef PKG_MALLOC
if (show_status){
LM_GEN1(memdump, "Memory status (pkg):\n");
pkg_status();
}
#endif
#ifdef SHM_MEM
if (pt) 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();
#endif
if (pid_file) unlink(pid_file);
if (pgid_file) unlink(pgid_file);
}
/**
* Tries to send a signal to all our processes
* If daemonized is ok to send the signal to all the process group,
* however if not daemonized we might end up sending the signal also
* to the shell which launched us => most signals will kill it if
* it's not in interactive mode and we don't want this. The non-daemonized
* case can occur when an error is encountered before daemonize is called
* (e.g. when parsing the config file) or when opensips is started in
* "dont-fork" mode.
* \param signum signal for killing the children
*/
static void kill_all_children(int signum)
{
int r;
if (own_pgid) kill(0, signum);
else if (pt)
for (r=1; r<counted_processes; r++)
if (pt[r].pid) kill(pt[r].pid, signum);
}
/**
* Timeout handler during wait for children exit.
* If this handler is called, a critical timeout has occured while
* waiting for the children to finish => we should kill everything and exit
* \param signo signal for killing the children
*/
static void sig_alarm_kill(int signo)
{
kill_all_children(SIGKILL); /* this will kill the whole group
including "this" process;
for debugging replace with SIGABRT
(but warning: it might generate lots
of cores) */
}
/**
* Timeout handler during wait for children exit.
* like sig_alarm_kill, but the timeout has occured when cleaning up,
* try to leave a core for future diagnostics
* \param signo signal for killing the children
* \see sig_alarm_kill
*/
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...");
abort();
}
/**
* Signal handler for the server.
*/
void handle_sigs(void)
{
pid_t chld;
int chld_status,overall_status=0;
int i;
int do_exit;
const unsigned int shutdown_time = 60; /* one minute close timeout */
switch(sig_flag){
case 0: break; /* do nothing*/
case SIGPIPE:
/* SIGPIPE might be rarely received on use of
exec module; simply ignore it
*/
LM_WARN("SIGPIPE received and ignored\n");
break;
case SIGINT:
case SIGTERM:
/* we end the program in all these cases */
if (sig_flag==SIGINT)
LM_DBG("INT received, program terminates\n");
else
LM_DBG("SIGTERM received, program terminates\n");
/* first of all, kill the children also */
kill_all_children(SIGTERM);
if (signal(SIGALRM, sig_alarm_kill) == SIG_ERR ) {
LM_ERR("could not install SIGALARM handler\n");
/* continue, the process will die anyway if no
* alarm is installed which is exactly what we want */
}
alarm(shutdown_time);
while(wait(0) > 0); /* Wait for all the children to terminate */
signal(SIGALRM, sig_alarm_abort);
cleanup(1); /* cleanup & show status*/
alarm(0);
signal(SIGALRM, SIG_IGN);
dprint("Thank you for flying " NAME "\n");
exit(0);
break;
case SIGUSR1:
#ifdef PKG_MALLOC
LM_GEN1(memdump, "Memory status (pkg):\n");
pkg_status();
#endif
#ifdef SHM_MEM
LM_GEN1(memdump, "Memory status (shm):\n");
shm_status();
#endif
break;
case SIGUSR2:
#ifdef PKG_MALLOC
set_pkg_stats( get_pkg_status_holder(process_no) );
#endif
break;
case SIGCHLD:
do_exit = 0;
while ((chld=waitpid( -1, &chld_status, WNOHANG ))>0) {
/* is it a process we know about? */
for( i=0 ; i<counted_processes ; i++ )
if (pt[i].pid==chld) break;
if (i==counted_processes) {
LM_DBG("unkown child process %d ended. Ignoring\n",chld);
continue;
}
do_exit = 1;
/* process the signal */
overall_status |= chld_status;
LM_DBG("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));
}
if (!do_exit)
break;
LM_INFO("terminating due to SIGCHLD\n");
/* exit */
kill_all_children(SIGTERM);
if (signal(SIGALRM, sig_alarm_kill) == SIG_ERR ) {
LM_ERR("could not install SIGALARM handler\n");
/* continue, the process will die anyway if no
* alarm is installed which is exactly what we want */
}
alarm(shutdown_time);
while(wait(0) > 0); /* wait for all the children to terminate*/
signal(SIGALRM, sig_alarm_abort);
cleanup(1); /* cleanup & show status*/
alarm(0);
signal(SIGALRM, SIG_IGN);
LM_DBG("terminating due to SIGCHLD\n");
exit(overall_status ? -1 : 0);
break;
case SIGHUP: /* ignoring it*/
LM_DBG("SIGHUP received, ignoring it\n");
break;
default:
LM_CRIT("unhandled signal %d\n", sig_flag);
}
sig_flag=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)
{
if (is_main){
if (sig_flag==0) sig_flag=signo;
else /* previous sig. not processed yet, ignoring? */
return; ;
if (dont_fork)
/* only one proc, doing everything from the sig handler,
unsafe, but this is only for debugging mode*/
handle_sigs();
}else{
/* process the important signals */
switch(signo){
case SIGPIPE:
LM_INFO("signal %d received\n", signo);
break;
case SIGINT:
case SIGTERM:
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 SIGUSR1:
/* statistics -> show only pkg mem */
#ifdef PKG_MALLOC
LM_GEN1(memdump, "Memory status (pkg):\n");
pkg_status();
#endif
break;
case SIGUSR2:
#ifdef PKG_MALLOC
set_pkg_stats( get_pkg_status_holder(process_no) );
#endif
break;
case SIGHUP:
/* ignored*/
break;
case SIGCHLD:
LM_DBG("SIGCHLD received: "
"we do not worry about grand-children\n");
}
}
}
/**
* Install the signal handlers.
* \return 0 on success, -1 on error
*/
int install_sigs(void)
{
/* added by jku: add exit handler */
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 i,rc;
pid_t pid;
struct socket_info* si;
int* startup_done = NULL;
stat_var *load_p = NULL;
chd_rank=0;
if (dont_fork){
if (create_status_pipe() < 0) {
LM_ERR("failed to create status pipe");
goto error;
}
if (udp_listen==0){
LM_ERR("no fork mode requires at least one"
" udp listen address, exiting...\n");
goto error;
}
/* only one address, we ignore all the others */
if (udp_init(udp_listen)==-1) goto error;
bind_address=udp_listen;
sendipv4=bind_address;
sendipv6=bind_address; /*FIXME*/
if (udp_listen->next){
LM_WARN("using only the first listen address (no fork)\n");
}
/* try to drop privileges */
if (do_suid(uid, gid)==-1)
goto error;
if (start_module_procs()!=0) {
LM_ERR("failed to fork module processes\n");
goto error;
}
/* we need another process to act as the timer*/
if (start_timer_processes()!=0) {
LM_CRIT("cannot start timer process(es)\n");
goto error;
}
/* main process, receive loop */
set_proc_attrs("stand-alone SIP receiver %.*s",
bind_address->sock_str.len, bind_address->sock_str.s );
/* We will call child_init even if we
* do not fork - and it will be called with rank 1 because
* in fact we behave like a child, not like main process */
if (init_child(1) < 0) {
LM_ERR("init_child failed in don't fork\n");
goto error;
}
if (startup_rlist.a)
run_startup_route();
is_main=1;
if (register_udp_load_stat(&udp_listen->sock_str,
&pt[process_no].load, 1)!=0) {
LM_ERR("failed to init udp load statistics\n");
goto error;
}
clean_write_pipeend();
LM_DBG("waiting for status code from children\n");
rc = wait_for_all_children();
if (rc < 0) {
LM_ERR("failed to succesfully init children\n");
return rc;
}
return udp_rcv_loop();
} else { /* don't fork */
for(si=udp_listen;si;si=si->next){
/* create the listening socket (for each address)*/
/* udp */
if (udp_init(si)==-1) goto error;
/* get first ipv4/ipv6 socket*/
if ((si->address.af==AF_INET)&&
((sendipv4==0)||(sendipv4->flags&SI_IS_LO)))
sendipv4=si;
#ifdef USE_IPV6
if((sendipv6==0)&&(si->address.af==AF_INET6))
sendipv6=si;
#endif
}
#ifdef USE_TCP
if (!tcp_disable){
for(si=tcp_listen; si; si=si->next){
/* same thing for tcp */
if (tcp_init(si)==-1) goto error;
/* get first ipv4/ipv6 socket*/
if ((si->address.af==AF_INET)&
((sendipv4_tcp==0)||(sendipv4_tcp->flags&SI_IS_LO)))
sendipv4_tcp=si;
#ifdef USE_IPV6
if((sendipv6_tcp==0)&&(si->address.af==AF_INET6))
sendipv6_tcp=si;
#endif
}
}
#ifdef USE_TLS
if (!tls_disable){
for(si=tls_listen; si; si=si->next){
/* same as for tcp*/
if (tls_init(si)==-1) goto error;
/* get first ipv4/ipv6 socket*/
if ((si->address.af==AF_INET)&&
((sendipv4_tls==0)||(sendipv4_tls->flags&SI_IS_LO)))
sendipv4_tls=si;
#ifdef USE_IPV6
if((sendipv6_tls==0)&&(si->address.af==AF_INET6))
sendipv6_tls=si;
#endif
}
}
#endif /* USE_TLS */
#endif /* USE_TCP */
#ifdef USE_SCTP
if (!sctp_disable){
for(si=sctp_listen; si; si=si->next){
/* same thing for sctp */
if (sctp_server_init(si)==-1) goto error;
/* get first ipv4/ipv6 socket*/
if ((si->address.af==AF_INET)&&
((sendipv4_sctp==0)||(sendipv4_sctp->flags&SI_IS_LO)))
sendipv4_sctp=si;
#ifdef USE_IPV6
if((sendipv6_sctp==0)&&(si->address.af==AF_INET6))
sendipv6_sctp=si;
#endif
}
}
#endif /* USE_SCTP */
/* all processes should have access to all the sockets (for sending)
* so we open all first*/
if (do_suid(uid, gid)==-1) goto error; /* try to drop privileges */
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;
}
if (fix_socket_list(&bin) != 0) {
LM_ERR("failed to initialize binary interface socket list!\n");
goto error;
}
/* OpenSIPS <--> OpenSIPS communication interface */
if (bin && start_bin_receivers() != 0) {
LM_CRIT("cannot start binary interface receiver processes!\n");
goto error;
}
/* udp processes */
for(si=udp_listen; si; si=si->next){
if(register_udp_load_stat(&si->sock_str,&load_p,si->children)!=0){
LM_ERR("failed to init load statistics\n");
goto error;
}
for(i=0;i<si->children;i++){
chd_rank++;
if ( (pid=internal_fork( "UDP receiver"))<0 ) {
LM_CRIT("cannot fork UDP process\n");
goto error;
} else {
if (pid==0) {
/* new UDP process */
/* set a more detailed description */
set_proc_attrs("SIP receiver %.*s ",
si->sock_str.len, si->sock_str.s);
bind_address=si; /* shortcut */
if (init_child(chd_rank) < 0) {
LM_ERR("init_child failed for UDP listener\n");
if (send_status_code(-1) < 0)
LM_ERR("failed to send status code\n");
clean_write_pipeend();
if (chd_rank == 1 && startup_done)
*startup_done = -1;
exit(-1);
}
/* first UDP proc runs statup_route (if defined) */
if(chd_rank == 1 && startup_done!=NULL) {
LM_DBG("runing startup for first UDP\n");
if(run_startup_route()< 0) {
if (send_status_code(-1) < 0)
LM_ERR("failed to send status code\n");
clean_write_pipeend();
*startup_done = -1;
LM_ERR("Startup route processing failed\n");
exit(-1);
}
*startup_done = 1;
}
if (!no_daemon_mode && send_status_code(0) < 0)
LM_ERR("failed to send status code\n");
clean_write_pipeend();
/* all UDP listeners on same interface
* have same SHM load pointer */
pt[process_no].load = load_p;
udp_rcv_loop();
exit(-1);
}
else {
/* wait for first proc to finish the startup route */
if(chd_rank == 1 && startup_done!=NULL)
while( !(*startup_done) ) {usleep(5);handle_sigs();}
}
}
}
/*parent*/
/*close(udp_sock)*/; /*if it's closed=>sendto invalid fd errors?*/
}
}
#ifdef USE_SCTP
if(!sctp_disable){
for(si=sctp_listen; si; si=si->next){
for(i=0;i<si->children;i++){
chd_rank++;
if ( (pid=internal_fork( "SCTP receiver"))<0 ) {
LM_CRIT("cannot fork SCTP process\n");
goto error;
} else if (pid==0){
/* new SCTP process */
/* set a more detailed description */
set_proc_attrs("SIP receiver %.*s ",
si->sock_str.len, si->sock_str.s);
bind_address=si; /* shortcut */
if (init_child(chd_rank) < 0) {
LM_ERR("init_child failed\n");
if (send_status_code(-1) < 0)
LM_ERR("failed to send status code\n");
clean_write_pipeend();
if( (si==sctp_listen && i==0) && startup_done)
*startup_done = -1;
exit(-1);
}
/* was startup route executed so far ? if not, run it only by the
* first SCTP proc (first proc from first interface) */
if( (si==sctp_listen && i==0) && startup_done!=NULL && *startup_done==0) {
LM_DBG("runing startup for first SCTP\n");
if(run_startup_route()< 0) {
LM_ERR("Startup route processing failed\n");
if (send_status_code(-1) < 0)
LM_ERR("failed to send status code\n");
clean_write_pipeend();
*startup_done = -1;
exit(-1);
}
*startup_done = 1;
}
if (!no_daemon_mode && send_status_code(0) < 0)
LM_ERR("failed to send status code\n");
clean_write_pipeend();
sctp_server_rcv_loop();