void check_maxfiles()
{
int sock = -1, sock1 = -1 , bogus = 0, failed_close = 0;
#ifdef USE_IPV6
sock1 = getsock(0, AF_INET); /* fill up any lower avail */
sock = getsock(0, AF_INET);
#else
sock1 = getsock(0);
sock = getsock(0);
#endif
if (sock1 != -1)
killsock(sock1);
if (sock == -1) {
return;
} else
killsock(sock);
bogus = sock - socks_total - 4; //4 for stdin/stdout/stderr/dns
if (bogus >= 50) { /* Attempt to close them */
sdprintf("SOCK: %d BOGUS: %d SOCKS_TOTAL: %d", sock, bogus, socks_total);
for (int i = 10; i < sock; i++) /* dont close lower sockets, they're probably legit */
if (!findanysnum(i)) {
if ((close(i)) == -1) /* try to close the BOGUS fd (likely a KQUEUE) */
failed_close++;
else
bogus--;
}
if (bogus >= 150 || failed_close >= 50) {
if (tands > 0) {
botnet_send_chat(-1, conf.bot->nick, "Max FD reached, restarting...");
botnet_send_bye("Max FD reached, restarting...");
}
nuke_server("brb");
cycle_time = 0;
restart(-1);
} else if (bogus >= 100 && (bogus % 10) == 0) {
putlog(LOG_WARN, "*", "* WARNING: $b%d$b bogus file descriptors detected, auto restart at 150", bogus);
}
}
}
int socket_create(const char *dest_ip, int dest_port, const char *src_ip, int src_port, int flags)
{
char *passive[] = {"::", "0.0.0.0"};
int sock = -1, pfamily, try_ok;
sockname_t dest_name, src_name;
/* If no source ip address is given, try :: and 0.0.0.0 (passive). */
for (try_ok = 0; try_ok < 2; try_ok++) {
/* Resolve the ip addresses. */
socket_name(&dest_name, dest_ip ? dest_ip : passive[try_ok], dest_port);
socket_name(&src_name, src_ip ? src_ip : passive[try_ok], src_port);
if (src_ip || src_port) flags |= SOCKET_BIND;
if (flags & SOCKET_CLIENT) pfamily = dest_name.family;
else if (flags & SOCKET_SERVER) pfamily = src_name.family;
else {
errno = EADDRNOTAVAIL;
return(-1);
}
/* Create the socket. */
if (flags & SOCKET_UDP) sock = socket(pfamily, SOCK_DGRAM, 0);
else sock = socket(pfamily, SOCK_STREAM, 0);
if (sock >= 0) break;
}
if (sock < 0) return(-2);
allocsock(sock, 0);
if (flags & SOCKET_NONBLOCK) socket_set_nonblock(sock, 1);
/* Do the bind if necessary. */
if (flags & (SOCKET_SERVER|SOCKET_BIND)) {
int yes = 1;
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));
if (bind(sock, &src_name.u.addr, src_name.len) != 0) {
killsock(sock);
return(-3);
}
if (flags & SOCKET_SERVER) listen(sock, 50);
}
if (flags & SOCKET_CLIENT) {
int i = -1;
if ((i = findanysnum(sock)) != -1) {
socklist[i].flags = (socklist[i].flags & ~SOCK_VIRTUAL) | SOCK_CONNECT | SOCK_PASS;
socklist[i].host = strdup(dest_ip);
socklist[i].port = dest_port;
}
if (connect(sock, &dest_name.u.addr, dest_name.len) != 0) {
if (errno != EINPROGRESS) {
killsock(sock);
return(-4);
}
}
}
errno = 0;
/* Yay, we're done. */
return(sock);
}
