/* main() for udpxrec module
*/
int udpxrec_main( int argc, char* const argv[] )
{
int rc = 0, ch = 0, custom_log = 0, no_daemon = 0;
static const char OPTMASK[] = "vb:e:M:p:B:n:m:l:c:R:u:T";
time_t now = time(NULL);
char now_buf[ 32 ] = {0}, sel_buf[ 32 ] = {0}, app_finfo[80] = {0};
extern int optind, optopt;
extern const char IPv4_ALL[];
mk_app_info(g_udpxrec_app, g_app_info, sizeof(g_app_info) - 1);
if( argc < 2 ) {
usage( argv[0], stderr );
return ERR_PARAM;
}
rc = init_recopt( &g_recopt );
while( (0 == rc) && (-1 != (ch = getopt( argc, argv, OPTMASK ))) ) {
switch(ch) {
case 'T': no_daemon = 1; break;
case 'v': set_verbose( &g_recopt.is_verbose ); break;
case 'b':
if( (time_t)0 != g_recopt.end_time ) {
(void) fprintf( stderr, "Cannot specify start-recording "
"time after end-recording time has been set\n" );
}
rc = a2time( optarg, &g_recopt.bg_time, time(NULL) );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid time: [%s]\n", optarg );
rc = ERR_PARAM;
}
else {
if( g_recopt.bg_time < now ) {
(void)strncpy( now_buf, Zasctime(localtime( &now )),
sizeof(now_buf) );
(void)strncpy( sel_buf,
Zasctime(localtime( &g_recopt.bg_time )),
sizeof(sel_buf) );
(void) fprintf( stderr,
"Selected %s time is in the past, "
"now=[%s], selected=[%s]\n", "start",
now_buf, sel_buf );
rc = ERR_PARAM;
}
}
break;
case 'e':
if( (time_t)0 == g_recopt.bg_time ) {
g_recopt.bg_time = time(NULL);
(void)fprintf( stderr,
"Start-recording time defaults to now [%s]\n",
Zasctime( localtime( &g_recopt.bg_time ) ) );
}
rc = a2time( optarg, &g_recopt.end_time, g_recopt.bg_time );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid time: [%s]\n", optarg );
rc = ERR_PARAM;
}
else {
if( g_recopt.end_time < now ) {
(void)strncpy( now_buf, Zasctime(localtime( &now )),
sizeof(now_buf) );
(void)strncpy( sel_buf,
Zasctime(localtime( &g_recopt.end_time )),
sizeof(sel_buf) );
(void) fprintf( stderr,
"Selected %s time is in the past, "
"now=[%s], selected=[%s]\n", "end",
now_buf, sel_buf );
rc = ERR_PARAM;
}
}
break;
case 'M':
rc = a2int64( optarg, &g_recopt.max_fsize );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid file size: [%s]\n",
optarg );
rc = ERR_PARAM;
}
break;
case 'p':
g_recopt.pidfile = strdup(optarg);
break;
case 'B':
rc = a2size( optarg, &g_recopt.bufsize );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid buffer size: [%s]\n",
optarg );
rc = ERR_PARAM;
}
else if( (g_recopt.bufsize < MIN_MCACHE_LEN) ||
(g_recopt.bufsize > MAX_MCACHE_LEN)) {
(void) fprintf( stderr,
"Buffer size must be in [%ld-%ld] bytes range\n",
(long)MIN_MCACHE_LEN, (long)MAX_MCACHE_LEN );
rc = ERR_PARAM;
}
break;
case 'n':
g_recopt.nice_incr = atoi( optarg );
if( 0 == g_recopt.nice_incr ) {
(void) fprintf( stderr,
"Invalid nice-value increment: [%s]\n", optarg );
rc = ERR_PARAM;
}
break;
case 'm':
rc = get_ipv4_address( optarg, g_recopt.mcast_addr,
sizeof(g_recopt.mcast_addr) );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid multicast address: [%s]\n",
optarg );
rc = ERR_PARAM;
}
break;
case 'l':
g_flog = fopen( optarg, "a" );
if( NULL == g_flog ) {
rc = errno;
(void) fprintf( stderr, "Error opening logfile [%s]: %s\n",
optarg, strerror(rc) );
rc = ERR_PARAM; break;
}
Setlinebuf( g_flog );
custom_log = 1;
break;
case 'c':
rc = get_addrport( optarg, g_recopt.rec_channel,
sizeof( g_recopt.rec_channel ),
&g_recopt.rec_port );
if( 0 != rc ) rc = ERR_PARAM;
break;
case 'R':
g_recopt.rbuf_msgs = atoi( optarg );
if( (g_recopt.rbuf_msgs <= 0) && (-1 != g_recopt.rbuf_msgs) ) {
(void) fprintf( stderr,
"Invalid rcache size: [%s]\n", optarg );
rc = ERR_PARAM;
}
break;
case 'u':
g_recopt.waitupd_sec = atoi(optarg);
if( g_recopt.waitupd_sec <= 0 ) {
(void) fprintf( stderr, "Invalid wait-update value [%s] "
"(must be a number > 0)\n", optarg );
rc = ERR_PARAM;
}
break;
case ':':
(void) fprintf( stderr, "Option [-%c] requires an argument\n",
optopt );
rc = ERR_PARAM; break;
case '?':
(void) fprintf( stderr, "Unrecognized option: [-%c]\n", optopt );
rc = ERR_PARAM; break;
default:
usage( argv[0], stderr );
rc = ERR_PARAM; break;
} /* switch */
} /* while getopt */
if( 0 == rc ) {
if( optind >= argc ) {
(void) fputs( "Missing destination file parameter\n", stderr );
rc = ERR_PARAM;
}
else {
g_recopt.dstfile = strdup( argv[optind] );
}
if( !(g_recopt.max_fsize > 0 || g_recopt.end_time) ) {
(void) fputs( "Must specify either max file [-M] size "
"or end time [-e]\n", stderr );
rc = ERR_PARAM;
}
if( !g_recopt.rec_channel[0] || !g_recopt.rec_port ) {
(void) fputs( "Must specify multicast channel to record from\n",
stderr );
rc = ERR_PARAM;
}
}
if( rc ) {
free_recopt( &g_recopt );
return rc;
}
do {
if( '\0' == g_recopt.mcast_addr[0] ) {
(void) strncpy( g_recopt.mcast_addr, IPv4_ALL,
sizeof(g_recopt.mcast_addr) - 1 );
}
if( !custom_log ) {
/* in debug mode output goes to stderr, otherwise to /dev/null */
g_flog = ((uf_TRUE == g_recopt.is_verbose)
? stderr
: fopen( "/dev/null", "a" ));
if( NULL == g_flog ) {
perror("fopen");
rc = ERR_INTERNAL; break;
}
}
if( 0 == geteuid() ) {
if( !no_daemon ) {
if( stderr == g_flog ) {
(void) fprintf( stderr,
"Logfile must be specified to run "
"in verbose mode in background\n" );
rc = ERR_PARAM; break;
}
if( NULL == g_recopt.pidfile ) {
(void) fprintf( stderr, "pidfile must be specified "
"to run as daemon\n" );
rc = ERR_PARAM; break;
}
if( 0 != (rc = daemonize(0, g_flog)) ) {
rc = ERR_INTERNAL; break;
}
}
} /* 0 == geteuid() */
if( NULL != g_recopt.pidfile ) {
rc = make_pidfile( g_recopt.pidfile, getpid(), g_flog );
if( 0 != rc ) break;
}
(void) set_nice( g_recopt.nice_incr, g_flog );
if( 0 != (rc = setup_signals()) ) break;
TRACE( fprint_recopt( g_flog, &g_recopt ) );
TRACE( printcmdln( g_flog, g_app_info, argc, argv ) );
if( g_recopt.bg_time ) {
if( 0 != (rc = verify_channel()) || g_quit )
break;
rc = wait_till( g_recopt.bg_time, g_recopt.waitupd_sec );
if( rc || g_quit ) break;
}
rc = record();
if( NULL != g_recopt.pidfile ) {
if( -1 == unlink(g_recopt.pidfile) ) {
mperror( g_flog, errno, "unlink [%s]", g_recopt.pidfile );
}
}
}
while(0);
if( g_flog ) {
(void)tmfprintf( g_flog, "%s is exiting with rc=[%d]\n",
app_finfo, rc );
}
if( g_flog && (stderr != g_flog) ) {
(void) fclose(g_flog);
}
free_recopt( &g_recopt );
return rc;
}
int
udpxy_main( int argc, char* const argv[] )
{
int rc = 0, ch = 0, port = -1,
custom_log = 0, no_daemon = 0;
char ipaddr[IPADDR_STR_SIZE] = "\0",
mcast_addr[IPADDR_STR_SIZE] = "\0";
char pidfile[ MAXPATHLEN ] = "\0";
u_short MIN_MCAST_REFRESH = 0, MAX_MCAST_REFRESH = 0;
/* support for -r -w (file read/write) option is disabled by default;
* those features are experimental and for dev debugging ONLY
* */
#ifdef UDPXY_FILEIO
static const char UDPXY_OPTMASK[] = "TvSa:l:p:m:c:B:n:R:r:w:H:M:";
#else
static const char UDPXY_OPTMASK[] = "TvSa:l:p:m:c:B:n:R:H:M:";
#endif
struct sigaction qact, iact, cact, oldact;
init_app_info();
(void) get_pidstr( PID_RESET, "S" );
rc = init_uopt( &g_uopt );
while( (0 == rc) && (-1 != (ch = getopt(argc, argv, UDPXY_OPTMASK))) ) {
switch( ch ) {
case 'v': set_verbose( &g_uopt.is_verbose );
break;
case 'T': no_daemon = 1;
break;
case 'S': g_uopt.cl_tpstat = uf_TRUE;
break;
case 'a':
rc = get_ipv4_address( optarg, ipaddr, sizeof(ipaddr) );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid address: [%s]\n",
optarg );
rc = ERR_PARAM;
}
break;
case 'p':
port = atoi( optarg );
if( port <= 0 ) {
(void) fprintf( stderr, "Invalid port number: [%d]\n",
port );
rc = ERR_PARAM;
}
break;
case 'm':
rc = get_ipv4_address( optarg, mcast_addr,
sizeof(mcast_addr) );
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid multicast address: "
"[%s]\n", optarg );
rc = ERR_PARAM;
}
break;
case 'c':
g_uopt.max_clients = atoi( optarg );
if( (g_uopt.max_clients < MIN_CLIENT_COUNT) ||
(g_uopt.max_clients > MAX_CLIENT_COUNT) ) {
(void) fprintf( stderr,
"Client count should be between %d and %d\n",
MIN_CLIENT_COUNT, MAX_CLIENT_COUNT );
rc = ERR_PARAM;
}
break;
case 'l':
g_flog = fopen( optarg, "a" );
if( NULL == g_flog ) {
rc = errno;
(void) fprintf( stderr, "Error opening logfile "
"[%s]: %s\n",
optarg, strerror(rc) );
rc = ERR_PARAM;
break;
}
Setlinebuf( g_flog );
custom_log = 1;
break;
case 'B':
rc = a2size(optarg, &g_uopt.rbuf_len);
if( 0 != rc ) {
(void) fprintf( stderr, "Invalid buffer size: [%s]\n",
optarg );
exit( ERR_PARAM );
}
else if( (g_uopt.rbuf_len < MIN_MCACHE_LEN) ||
(g_uopt.rbuf_len > MAX_MCACHE_LEN) ) {
fprintf(stderr, "Buffer size "
"must be within [%ld-%ld] bytes\n",
(long)MIN_MCACHE_LEN, (long)MAX_MCACHE_LEN );
rc = ERR_PARAM;
}
break;
case 'n':
g_uopt.nice_incr = atoi( optarg );
if( 0 == g_uopt.nice_incr ) {
(void) fprintf( stderr,
"Invalid nice-value increment: [%s]\n", optarg );
rc = ERR_PARAM;
break;
}
break;
case 'R':
g_uopt.rbuf_msgs = atoi( optarg );
if( (g_uopt.rbuf_msgs <= 0) && (-1 != g_uopt.rbuf_msgs) ) {
(void) fprintf( stderr,
"Invalid Rmsgs size: [%s]\n", optarg );
rc = ERR_PARAM;
break;
}
break;
case 'H':
g_uopt.dhold_tmout = (time_t)atoi( optarg );
if( (0 == g_uopt.dhold_tmout) ||
((g_uopt.dhold_tmout) < 0 && (-1 != g_uopt.dhold_tmout)) ) {
(void) fprintf( stderr, "Invalid value for max time "
"to hold buffered data: [%s]\n", optarg );
rc = ERR_PARAM;
break;
}
break;
#ifdef UDPXY_FILEIO
case 'r':
if( 0 != access(optarg, R_OK) ) {
perror("source file - access");
rc = ERR_PARAM;
break;
}
g_uopt.srcfile = strdup( optarg );
break;
case 'w':
g_uopt.dstfile = strdup( optarg );
break;
#endif /* UDPXY_FILEIO */
case 'M':
g_uopt.mcast_refresh = (u_short)atoi( optarg );
MIN_MCAST_REFRESH = 30;
MAX_MCAST_REFRESH = 64000;
if( g_uopt.mcast_refresh &&
(g_uopt.mcast_refresh < MIN_MCAST_REFRESH ||
g_uopt.mcast_refresh > MAX_MCAST_REFRESH )) {
(void) fprintf( stderr,
"Invalid multicast refresh period [%d] seconds, "
"min=[%d] sec, max=[%d] sec\n",
(int)g_uopt.mcast_refresh,
(int)MIN_MCAST_REFRESH, (int)MAX_MCAST_REFRESH );
rc = ERR_PARAM;
break;
}
break;
case ':':
(void) fprintf( stderr,
"Option [-%c] requires an argument\n",
optopt );
rc = ERR_PARAM;
break;
case '?':
(void) fprintf( stderr,
"Unrecognized option: [-%c]\n", optopt );
rc = ERR_PARAM;
break;
default:
usage( argv[0], stderr );
rc = ERR_PARAM;
break;
}
} /* while getopt */
if (rc) {
free_uopt( &g_uopt );
return rc;
}
openlog( g_udpxy_app, LOG_CONS | LOG_PID, LOG_LOCAL0 );
do {
if( (argc < 2) || (port <= 0) || (rc != 0) ) {
usage( argv[0], stderr );
rc = ERR_PARAM; break;
}
if( '\0' == mcast_addr[0] ) {
(void) strncpy( mcast_addr, IPv4_ALL, sizeof(mcast_addr) - 1 );
}
if( !custom_log ) {
/* in debug mode output goes to stderr, otherwise to /dev/null */
g_flog = ((uf_TRUE == g_uopt.is_verbose)
? stderr
: fopen( "/dev/null", "a" ));
if( NULL == g_flog ) {
perror("fopen");
rc = ERR_INTERNAL; break;
}
}
if( 0 == geteuid() ) {
if( !no_daemon ) {
if( stderr == g_flog ) {
(void) fprintf( stderr,
"Logfile must be specified to run "
"in verbose mode in background\n" );
rc = ERR_PARAM; break;
}
if( 0 != (rc = daemonize(0, g_flog)) ) {
rc = ERR_INTERNAL; break;
}
}
rc = set_pidfile( g_udpxy_app, port, pidfile, sizeof(pidfile) );
if( 0 != rc ) {
mperror( g_flog, errno, "set_pidfile" );
rc = ERR_INTERNAL; break;
}
if( 0 != (rc = make_pidfile( pidfile, getpid(), g_flog )) )
break;
}
qact.sa_handler = handle_quitsigs;
sigemptyset(&qact.sa_mask);
qact.sa_flags = 0;
if( (sigaction(SIGTERM, &qact, &oldact) < 0) ||
(sigaction(SIGQUIT, &qact, &oldact) < 0) ||
(sigaction(SIGINT, &qact, &oldact) < 0)) {
perror("sigaction-quit");
rc = ERR_INTERNAL; break;
}
iact.sa_handler = SIG_IGN;
sigemptyset(&iact.sa_mask);
iact.sa_flags = 0;
if( (sigaction(SIGPIPE, &iact, &oldact) < 0) ) {
perror("sigaction-ignore");
rc = ERR_INTERNAL; break;
}
cact.sa_handler = handle_sigchld;
sigemptyset(&cact.sa_mask);
cact.sa_flags = 0;
if( sigaction(SIGCHLD, &cact, &oldact) < 0 ) {
perror("sigaction-sigchld");
rc = ERR_INTERNAL; break;
}
syslog( LOG_NOTICE, "%s is starting\n", g_udpxy_finfo );
TRACE( printcmdln( g_flog, g_udpxy_finfo, argc, argv ) );
rc = srv_loop( ipaddr, port, mcast_addr );
syslog( LOG_NOTICE, "%s is exiting with rc=[%d]\n",
g_udpxy_finfo, rc);
TRACE( tmfprintf( g_flog, "%s is exiting with rc=[%d]\n",
g_udpxy_app, rc ) );
TRACE( printcmdln( g_flog, g_udpxy_finfo, argc, argv ) );
} while(0);
if( '\0' != pidfile[0] ) {
if( -1 == unlink(pidfile) ) {
mperror( g_flog, errno, "unlink [%s]", pidfile );
}
}
if( g_flog && (stderr != g_flog) ) {
(void) fclose(g_flog);
}
closelog();
free_uopt( &g_uopt );
return rc;
}