/*
* @returns 0 on success, -1 on error.
*/
int uping_init(void)
{
struct sockaddr_in from = { 0 };
int fd;
memset(&from, 0, sizeof(from));
from.sin_addr = VirtualHost.sin_addr;
from.sin_port = htons(atoi(UDP_PORT));
from.sin_family = AF_INET;
if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
Debug((DEBUG_ERROR, "UPING: UDP listener socket call failed: %s",
(strerror(errno)) ? strerror(errno) : "Unknown error"));
return -1;
}
if (!os_set_reuseaddr(fd)) {
log_write(LS_SOCKET, L_ERROR, 0,
"UPING: set reuseaddr on UDP listener failed: %m (fd %d)", fd);
Debug((DEBUG_ERROR, "UPING: set reuseaddr on UDP listener failed: %s",
(strerror(errno)) ? strerror(errno) : "Unknown error"));
close(fd);
return -1;
}
if (bind(fd, (struct sockaddr*) &from, sizeof(from)) == -1) {
log_write(LS_SOCKET, L_ERROR, 0,
"UPING: bind on UDP listener (%d fd %d) failed: %m",
htons(from.sin_port), fd);
Debug((DEBUG_ERROR, "UPING: bind on UDP listener failed : %s",
(strerror(errno)) ? strerror(errno) : "Unknown error"));
close(fd);
return -1;
}
if (!os_set_nonblocking(fd)) {
Debug((DEBUG_ERROR, "UPING: set non-blocking: %s",
(strerror(errno)) ? strerror(errno) : "Unknown error"));
close(fd);
return -1;
}
if (!socket_add(&upingSock, uping_echo_callback, 0, SS_DATAGRAM,
SOCK_EVENT_READABLE, fd)) {
Debug((DEBUG_ERROR, "UPING: Unable to queue fd to event system"));
close(fd);
return -1;
}
UPingFileDescriptor = fd;
return fd;
}
/** Open a TCP or UDP socket on a particular address.
* @param[in] local Local address to bind to.
* @param[in] type SOCK_STREAM or SOCK_DGRAM.
* @param[in] port_name Port name (used in error diagnostics).
* @param[in] family A specific address family to use, or 0 for automatic.
* @return Bound descriptor, or -1 on error.
*/
int os_socket(const struct irc_sockaddr* local, int type, const char* port_name, int family)
{
struct sockaddr_native addr;
int size, fd;
assert(local != 0);
size = sockaddr_from_irc(&addr, local, -1, family);
fd = socket(addr.sn_family, type, 0);
if (fd < 0) {
report_error(SOCKET_ERROR_MSG, port_name, errno);
return -1;
}
if (fd > MAXCLIENTS - 1) {
report_error(CONNLIMIT_ERROR_MSG, port_name, 0);
close(fd);
return -1;
}
if (!os_set_reuseaddr(fd)) {
report_error(REUSEADDR_ERROR_MSG, port_name, errno);
close(fd);
return -1;
}
if (!os_set_nonblocking(fd)) {
report_error(NONB_ERROR_MSG, port_name, errno);
close(fd);
return -1;
}
if (local) {
#if defined(IPV6_V6ONLY)
int on = 1;
if (family == AF_INET6 && irc_in_addr_unspec(&local->addr))
setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
#endif
if (bind(fd, (struct sockaddr*)&addr, size)) {
report_error(BIND_ERROR_MSG, port_name, errno);
close(fd);
return -1;
}
}
return fd;
}
