int
procket_open_socket(PROCKET_STATE *ps)
{
switch (ps->protocol) {
case IPPROTO_ICMP:
/* getaddrinfo(3): node for SOCK_RAW must not be NULL */
if (ps->address == NULL) {
char *ipaddr = ps->family == AF_INET6 ? "::" : "0.0.0.0";
ps->address = strdup(ipaddr);
if (ps->address == NULL)
return -1;
}
/* getaddrinfo(3): port for SOCK_RAW must NULL */
free(ps->port);
ps->port = NULL;
/* fall through */
case IPPROTO_TCP:
case IPPROTO_UDP:
if (procket_lookup_socket(ps) < 0)
return -1;
break;
default:
if (procket_create_socket(ps) < 0)
return -1;
break;
}
return 0;
}
int
procket_open_socket(PROCKET_STATE *ps)
{
switch (ps->protocol) {
case IPPROTO_TCP:
case IPPROTO_UDP:
if (procket_lookup_socket(ps) < 0)
return -1;
break;
default:
if (procket_create_socket(ps) < 0)
return -1;
break;
}
return 0;
}
int
procket_lookup_socket(PROCKET_STATE *ps)
{
struct addrinfo hints = {0};
struct addrinfo *res = NULL;
struct addrinfo *rp = NULL;
int err = 0;
hints.ai_family = ps->family;
hints.ai_socktype = ps->type;
hints.ai_protocol = ps->protocol;
hints.ai_flags = AI_NUMERICHOST | AI_NUMERICSERV | AI_PASSIVE;
err = getaddrinfo(ps->address, ps->port, &hints, &res);
switch (err) {
case 0:
break;
case EAI_SYSTEM:
return -1;
/* fake errno values */
#ifdef EAI_ADDRFAMILY
case EAI_ADDRFAMILY:
errno = EAFNOSUPPORT;
return -1;
#endif
case EAI_AGAIN:
errno = EAGAIN;
return -1;
case EAI_FAMILY:
errno = EPFNOSUPPORT;
return -1;
case EAI_MEMORY:
errno = EAI_MEMORY;
return -1;
case EAI_SERVICE:
case EAI_SOCKTYPE:
errno = ESOCKTNOSUPPORT;
return -1;
default:
errno = EINVAL;
return -1;
}
for (rp = res; rp != NULL; rp = rp->ai_next) {
ps->family = rp->ai_family;
ps->type = rp->ai_socktype;
ps->protocol = rp->ai_protocol;
if (procket_create_socket(ps) == 0) {
if (bind(ps->s, rp->ai_addr, rp->ai_addrlen) < 0)
return -1;
break;
}
}
freeaddrinfo(res);
if (ps->s < 0)
return -1;
return 0;
}
