/*
* Initialize all "candidate" interfaces that are in the system
* configuration list. A "candidate" is up, not loopback and not
* point to point.
*/
void
deviceInitAll(void)
{
struct ifaddrs *ifap, *ifa;
if (getifaddrs(&ifap) != 0)
mopLogErr("deviceInitAll: socket");
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
#ifdef AF_LINK
struct sockaddr_dl *sdl;
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER ||
sdl->sdl_alen != 6)
continue;
#endif
if ((ifa->ifa_flags &
(IFF_UP | IFF_LOOPBACK | IFF_POINTOPOINT)) != IFF_UP)
continue;
deviceInitOne(ifa->ifa_name);
}
freeifaddrs(ifap);
}
int
main(int argc, char **argv)
{
int c, pid;
extern char version[];
while ((c = getopt(argc, argv, "34adfs:v")) != -1) {
switch (c) {
case '3':
Not3Flag++;
break;
case '4':
Not4Flag++;
break;
case 'a':
AllFlag++;
break;
case 'd':
DebugFlag++;
break;
case 'f':
ForegroundFlag++;
break;
case 's':
MopdDir = optarg;
break;
case 'v':
VersionFlag++;
break;
default:
Usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (VersionFlag) {
fprintf(stdout,"%s: version %s\n", getprogname(), version);
exit(0);
}
if ((AllFlag && argc != 0) || (!AllFlag && argc == 0) ||
(Not3Flag && Not4Flag))
Usage();
/* All error reporting is done through syslogs. */
openlog("mopd", LOG_PID, LOG_DAEMON);
if ((!ForegroundFlag) && DebugFlag)
fprintf(stdout,
"%s: not running as daemon, -d given.\n", getprogname());
if ((!ForegroundFlag) && (!DebugFlag)) {
pid = fork();
if (pid > 0)
/* Parent exits, leaving child in background. */
exit(0);
else
if (pid == -1) {
syslog(LOG_ERR, "cannot fork");
exit(0);
}
/* Fade into the background */
daemon(0, 0);
pidfile(NULL);
}
syslog(LOG_INFO, "%s %s started.", getprogname(), version);
if (AllFlag)
deviceInitAll();
else {
while (argc--)
deviceInitOne(*argv++);
}
Loop();
/* NOTREACHED */
return (0);
}
int
main(int argc, char *argv[])
{
int c;
char *interface;
struct passwd *pw;
extern char version[];
while ((c = getopt(argc, argv, "34adfv")) != -1)
switch (c) {
case '3':
Not3Flag = 1;
break;
case '4':
Not4Flag = 1;
break;
case 'a':
AllFlag = 1;
break;
case 'd':
DebugFlag++;
break;
case 'f':
ForegroundFlag = 1;
break;
case 'v':
VersionFlag = 1;
break;
default:
Usage();
/* NOTREACHED */
}
if (VersionFlag) {
fprintf(stdout,"%s: version %s\n", __progname, version);
exit(0);
}
interface = argv[optind++];
if ((AllFlag && interface) || (!AllFlag && interface == 0) ||
(argc > optind) || (Not3Flag && Not4Flag))
Usage();
/* All error reporting is done through syslogs. */
openlog(__progname, LOG_PID | LOG_CONS, LOG_DAEMON);
tzset();
if ((pw = getpwnam("_mopd")) == NULL)
err(1, "getpwnam");
if ((!ForegroundFlag) && DebugFlag)
fprintf(stdout, "%s: not running as daemon, -d given.\n",
__progname);
if ((!ForegroundFlag) && (!DebugFlag))
if (daemon(0, 0) == -1)
err(1, NULL);
syslog(LOG_INFO, "%s %s started.", __progname, version);
if (AllFlag)
deviceInitAll();
else
deviceInitOne(interface);
if (chroot(MOP_FILE_PATH) == -1) {
syslog(LOG_CRIT, "chroot %s: %m", MOP_FILE_PATH);
exit(1);
}
if (chdir("/") == -1) {
syslog(LOG_CRIT, "chdir(\"/\"): %m");
exit(1);
}
if (setgroups(1, &pw->pw_gid) ||
setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) {
syslog(LOG_CRIT, "can't drop privileges: %m");
exit(1);
}
endpwent();
Loop();
/* NOTREACHED */
}