int initialize_rip (rip_table_t * pointer, int port){
int flag = udp_open (port);
if (flag == -1) {
print_alert ("Unable to open port\n");
printf("\tripv2.c: initialize_rip(): udp_open = -1\n");
} else
join_multicast( RIP_MULTICAST_IPv4 );
pointer->num_entries = 0;
return flag;
}
static void nl_newaddress(time_t now)
{
if (option_bool(OPT_CLEVERBIND) || daemon->doing_dhcp6 || daemon->doing_ra)
enumerate_interfaces();
if (option_bool(OPT_CLEVERBIND))
create_bound_listeners(0);
#ifdef HAVE_DHCP6
if (daemon->doing_dhcp6 || daemon->doing_ra)
{
join_multicast(0);
dhcp_construct_contexts(now);
}
if (daemon->doing_dhcp6)
lease_find_interfaces(now);
#endif
}
static int
distribution_probe(void)
{
if (c_ip) {
int err;
char s[INET6_ADDRSTRLEN];
struct addrinfo hints = {
.ai_socktype = SOCK_DGRAM,
.ai_family = c_ipv6 ? PF_INET6 : PF_INET,
};
struct addrinfo *res = NULL, *t;
if (c_ipv6 && !strcmp(c_ip, "224.0.0.1"))
c_ip = "ff01::1";
if ((err = getaddrinfo(c_ip, c_port, &hints, &res)) < 0)
quit("getaddrinfo failed: %s\n", gai_strerror(err));
for (t = res; t; t = t->ai_next) {
if (c_debug) {
const char *x = xinet_ntop(t->ai_addr, s, sizeof(s));
fprintf(stderr, "Trying %s...", x ? x : "null");
}
recv_fd = socket(t->ai_family, t->ai_socktype, 0);
if (recv_fd < 0) {
if (c_debug)
fprintf(stderr, "socket() failed: %s\n", strerror(errno));
continue;
}
if (c_multicast) {
if (join_multicast(recv_fd, t->ai_addr, c_iface) < 0)
continue;
if (!c_bind)
goto skip_bind;
}
if (bind(recv_fd, t->ai_addr, t->ai_addrlen) < 0) {
if (c_debug)
fprintf(stderr, "bind() failed: %s\n", strerror(errno));
continue;
}
skip_bind:
if (c_debug)
fprintf(stderr, "OK\n");
goto ok;
}
fprintf(stderr, "Could not create and connect a datagram " \
"socket, tried:\n");
for (t = res; t; t = t->ai_next) {
const char *x = xinet_ntop(t->ai_addr, s, sizeof(s));
fprintf(stderr, "\t%s\n", x ? x : "null");
}
quit("Last error message was: %s\n", strerror(errno));
} else {
if (c_ipv6) {
struct sockaddr_in6 addr = {
.sin6_family = AF_INET6,
.sin6_addr = IN6ADDR_ANY_INIT,
.sin6_port = htons(c_port_int),
};
recv_fd = socket(AF_INET6, SOCK_DGRAM, 0);
if (recv_fd < 0)
goto try_4;
if (bind(recv_fd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
goto try_4;
goto ok;
}
try_4:
recv_fd = socket(AF_INET, SOCK_DGRAM, 0);
if (recv_fd < 0)
quit("socket creation failed: %s\n", strerror(errno));
{
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_port = htons(c_port_int),
};
/*
* Guess what, NetBSD is f****d up so this can't be in the
* initializer
*/
addr.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(recv_fd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
quit("bind failed: %s\n", strerror(errno));
}
goto ok;
}
ok:
{
int flags;
if ((flags = fcntl(recv_fd, F_GETFL)) < 0)
quit("fcntl failed: %s\n", strerror(errno));
if (fcntl(recv_fd, F_SETFL, flags | O_NONBLOCK) < 0)
quit("fcntl failed: %s\n", strerror(errno));
}
return 1;
}
