int
ripd(int argc, char *argv[])
{
int n, nfd, tflags = 0, ch;
struct timeval *tvp, waittime;
struct itimerval itval;
struct rip *query = msg;
fd_set ibits;
sigset_t sigset, osigset;
while ((ch = getopt(argc, argv, "sqtdg")) != EOF) {
switch (ch) {
case 's': supplier = 1; break;
case 'q': supplier = 0; break;
case 't':
tflags++;
break;
case 'd':
debug++;
setlogmask(LOG_UPTO(LOG_DEBUG));
break;
case 'g': gateway = 1; break;
default:
fprintf(stderr, "%% Incomplete command\r\n");
return(1);
}
}
getkversion();
sock = getsocket();
assert(sock>=0);
openlog("ripd", LOG_PID | LOG_ODELAY, LOG_DAEMON);
if (debug == 0 && tflags == 0) {
switch (fork()) {
case -1: perror("fork"); exit(1);
case 0: break; /* child */
default: exit(0); /* parent */
}
close(0);
close(1);
close(2);
setsid();
setlogmask(LOG_UPTO(LOG_WARNING));
}
else {
setlogmask(LOG_UPTO(LOG_DEBUG));
}
/* pid */
pidfile = fopen( "/var/run/ripd.pid", "w" ) ;
if (pidfile==NULL)
{
fprintf(stderr,"%% Error write pid\n");
return (-1);
}
else fprintf(pidfile,"%d", (int) getpid());
fclose(pidfile);
/*
* Any extra argument is considered
* a tracing log file.
*
* Note: because traceon() redirects stderr, anything planning to
* crash on startup should do so before this point.
*/
if (argc > optind) {
traceon(argv[optind]);
}
while (tflags-- > 0) {
bumploglevel();
}
gettimeofday(&now, NULL);
/*
* Collect an initial view of the world by
* checking the interface configuration and the gateway kludge
* file. Then, send a request packet on all
* directly connected networks to find out what
* everyone else thinks.
*/
rtinit();
ifinit();
gwkludge();
if (gateway > 0) {
rtdefault();
}
if (supplier < 0) {
supplier = 0;
}
query->rip_cmd = RIPCMD_REQUEST;
query->rip_vers = RIPVERSION;
if (sizeof(query->rip_nets[0].rip_dst.sa_family) > 1) {
/* XXX */
query->rip_nets[0].rip_dst.sa_family = htons((u_short)AF_UNSPEC);
}
else {
/* unreachable code (at least on most platforms) */
query->rip_nets[0].rip_dst.sa_family = AF_UNSPEC;
}
query->rip_nets[0].rip_metric = htonl((u_long)HOPCNT_INFINITY);
toall(sndmsg, 0, NULL);
signal(SIGALRM, timer);
signal(SIGHUP, hup);
signal(SIGTERM, hup);
signal(SIGINT, rtdeleteall);
signal(SIGUSR1, sigtrace);
signal(SIGUSR2, sigtrace);
itval.it_interval.tv_sec = TIMER_RATE;
itval.it_value.tv_sec = TIMER_RATE;
itval.it_interval.tv_usec = 0;
itval.it_value.tv_usec = 0;
srandom(time(NULL) ^ getpid());
if (setitimer(ITIMER_REAL, &itval, (struct itimerval *)NULL) < 0) {
syslog(LOG_ERR, "setitimer: %m\n");
}
FD_ZERO(&ibits);
nfd = sock + 1; /* 1 + max(fd's) */
for (;;) {
FD_SET(sock, &ibits);
/*
* If we need a dynamic update that was held off,
* needupdate will be set, and nextbcast is the time
* by which we want select to return. Compute time
* until dynamic update should be sent, and select only
* until then. If we have already passed nextbcast,
* just poll.
*/
if (needupdate) {
waittime = nextbcast;
timevalsub(&waittime, &now);
if (waittime.tv_sec < 0) {
waittime.tv_sec = 0;
waittime.tv_usec = 0;
}
if (traceactions)
fprintf(ftrace,
"select until dynamic update %ld/%ld sec/usec\n",
(long)waittime.tv_sec, (long)waittime.tv_usec);
tvp = &waittime;
}
else {
tvp = (struct timeval *)NULL;
}
n = select(nfd, &ibits, 0, 0, tvp);
if (n <= 0) {
/*
* Need delayed dynamic update if select returned
* nothing and we timed out. Otherwise, ignore
* errors (e.g. EINTR).
*/
if (n < 0) {
if (errno == EINTR)
continue;
syslog(LOG_ERR, "select: %m");
}
sigemptyset(&sigset);
sigaddset(&sigset, SIGALRM);
sigprocmask(SIG_BLOCK, &sigset, &osigset);
if (n == 0 && needupdate) {
if (traceactions)
fprintf(ftrace,
"send delayed dynamic update\n");
(void) gettimeofday(&now,
(struct timezone *)NULL);
toall(supply, RTS_CHANGED,
(struct interface *)NULL);
lastbcast = now;
needupdate = 0;
nextbcast.tv_sec = 0;
}
sigprocmask(SIG_SETMASK, &osigset, NULL);
continue;
}
gettimeofday(&now, (struct timezone *)NULL);
sigemptyset(&sigset);
sigaddset(&sigset, SIGALRM);
sigprocmask(SIG_BLOCK, &sigset, &osigset);
if (FD_ISSET(sock, &ibits)) {
process(sock);
}
/* handle ICMP redirects */
sigprocmask(SIG_SETMASK, &osigset, NULL);
}
}
int
main(int argc, char *argv[])
{
int _argc = 0;
char *_argv[5];
pid_t pid;
int execed = 0;
int n, nfd, tflags = 0, ch;
struct timeval *tvp, waittime;
struct itimerval itval;
fd_set ibits;
sigset_t sigset, osigset;
while ((ch = getopt(argc, argv, "D012bsqtdg")) != EOF) {
switch (ch) {
case 'D':
execed = 1;
break;
case '0': ripversion = 0; break;
case '1': ripversion = 1; break;
case '2': ripversion = 2; break;
case 'b': multicast = 0; break;
case 's': supplier = 1; break;
case 'q': supplier = 0; break;
case 't':
tflags++;
break;
case 'd':
debug++;
setlogmask(LOG_UPTO(LOG_DEBUG));
break;
case 'g': gateway = 1; break;
default:
fprintf(stderr, "usage: routed [ -1bsqtdg ]\n");
exit(1);
}
}
// Modified by Mason Yu
sleep(2);
/*
if(!check_pid()) {
// Commented by Mason Yu
//write_cfg();
exit(1);
}
*/
if (!execed) {
if ((pid = vfork()) < 0) {
fprintf(stderr, "vfork failed\n");
exit(1);
} else if (pid != 0) {
exit(0);
}
for (_argc=0; _argc < argc; _argc++ )
_argv[_argc] = argv[_argc];
_argv[0] = runPath;
_argv[argc++] = "-D";
_argv[argc++] = NULL;
execv(_argv[0], _argv);
/* Not reached */
fprintf(stderr, "Couldn't exec\n");
_exit(1);
} else {
setsid();
}
getkversion();
sock = getsocket();
assert(sock>=0);
openlog("routed", LOG_PID | LOG_ODELAY, LOG_DAEMON);
#if 0
if (debug == 0 && tflags == 0) {
#ifndef EMBED
switch (fork()) {
case -1: perror("fork"); exit(1);
case 0: break; /* child */
default: exit(0); /* parent */
}
#endif
close(0);
close(1);
close(2);
setsid();
setlogmask(LOG_UPTO(LOG_WARNING));
}
else
#endif
{
setlogmask(LOG_UPTO(LOG_DEBUG));
}
/*
* Any extra argument is considered
* a tracing log file.
*
* Note: because traceon() redirects stderr, anything planning to
* crash on startup should do so before this point.
*/
if (argc > 1) {
traceon(argv[argc - 1]);
}
while (tflags-- > 0) {
bumploglevel();
}
gettimeofday(&now, NULL);
/*
* Collect an initial view of the world by
* checking the interface configuration and the gateway kludge
* file. Then, send a request packet on all
* directly connected networks to find out what
* everyone else thinks.
*/
read_cfg();
rtinit();
ifinit();
gwkludge();
if (gateway > 0) {
rtdefault();
}
if (supplier < 0) {
supplier = 0;
}
signal(SIGALRM, timer);
signal(SIGHUP, hup);
signal(SIGTERM, hup);
signal(SIGTERM, terminate_routed); //RTK WiSOC modify for deleting all route entry
signal(SIGINT, rtdeleteall);
signal(SIGUSR1, sigtrace);
signal(SIGUSR2, sigtrace);
itval.it_interval.tv_sec = TIMER_RATE;
itval.it_value.tv_sec = TIMER_RATE;
itval.it_interval.tv_usec = 0;
itval.it_value.tv_usec = 0;
srandom(time(NULL) ^ getpid());
if (setitimer(ITIMER_REAL, &itval, (struct itimerval *)NULL) < 0) {
syslog(LOG_ERR, "setitimer: %m\n");
}
// Kaohj
//#ifdef EMBED //WiSOC we use pid file for system init
write_pid();
//#endif
rip_request_send();
rip_input_init();
DISPLAY_BANNER;
FD_ZERO(&ibits);
nfd = sock + 1; /* 1 + max(fd's) */
for (;;) {
FD_SET(sock, &ibits);
/*
* If we need a dynamic update that was held off,
* needupdate will be set, and nextbcast is the time
* by which we want select to return. Compute time
* until dynamic update should be sent, and select only
* until then. If we have already passed nextbcast,
* just poll.
*/
if (needupdate) {
waittime = nextbcast;
timevalsub(&waittime, &now);
if (waittime.tv_sec < 0) {
waittime.tv_sec = 0;
waittime.tv_usec = 0;
}
if (traceactions)
fprintf(ftrace,
"select until dynamic update %ld/%ld sec/usec\n",
(long)waittime.tv_sec, (long)waittime.tv_usec);
tvp = &waittime;
}
else {
tvp = (struct timeval *)NULL;
}
n = select(nfd, &ibits, 0, 0, tvp);
if (n <= 0) {
/*
* Need delayed dynamic update if select returned
* nothing and we timed out. Otherwise, ignore
* errors (e.g. EINTR).
*/
if (n < 0) {
if (errno == EINTR)
continue;
syslog(LOG_ERR, "select: %m");
}
sigemptyset(&sigset);
sigaddset(&sigset, SIGALRM);
sigprocmask(SIG_BLOCK, &sigset, &osigset);
if (n == 0 && needupdate) {
if (traceactions)
fprintf(ftrace,
"send delayed dynamic update\n");
(void) gettimeofday(&now,
(struct timezone *)NULL);
toall(supply, RTS_CHANGED,
(struct interface *)NULL);
lastbcast = now;
needupdate = 0;
nextbcast.tv_sec = 0;
}
sigprocmask(SIG_SETMASK, &osigset, NULL);
continue;
}
gettimeofday(&now, (struct timezone *)NULL);
sigemptyset(&sigset);
sigaddset(&sigset, SIGALRM);
sigprocmask(SIG_BLOCK, &sigset, &osigset);
if (FD_ISSET(sock, &ibits)) {
process(sock);
}
/* handle ICMP redirects */
sigprocmask(SIG_SETMASK, &osigset, NULL);
}
}
