/* void adns_getaddr(struct irc_inaddr *addr, int aftype,
* struct DNSQuery *req, int arpa_type);
* Input: An address, an address family, a DNSQuery structure.
* arpa_type is used for deciding on using ip6.int or ip6.arpa
* 0 is ip6.arpa and 1 is ip6.int, of course this applies to ipv6
* connections only and has no effect on ipv4.
* Output: None
* Side effects: Sets up a query entry and sends it to the DNS server to
* resolve an IP address to a domain name.
*/
void adns_getaddr(struct irc_inaddr *addr, int aftype,
struct DNSQuery *req, int arpa_type)
{
struct irc_sockaddr ipn;
#ifdef IPV6
char *domain;
#endif
memset(&ipn, 0, sizeof(struct irc_sockaddr));
assert(dns_state->nservers > 0);
#ifdef IPV6
if (aftype == AF_INET6)
{
if(!arpa_type)
domain = "ip6.arpa";
else
domain = "ip6.int";
ipn.sins.sin6.sin6_family = AF_INET6;
ipn.sins.sin6.sin6_port = 0;
memcpy(&ipn.sins.sin6.sin6_addr.s6_addr, &addr->sins.sin6.s6_addr,
sizeof(struct in6_addr));
adns_submit_reverse_ip6(dns_state,(struct sockaddr *)&ipn.sins.sin6,domain,
adns_r_ptr_ip6,
adns_qf_owner|adns_qf_cname_loose|adns_qf_quoteok_anshost,
req, &req->query);
}
else
{
ipn.sins.sin.sin_family = AF_INET;
ipn.sins.sin.sin_port = 0;
ipn.sins.sin.sin_addr.s_addr = addr->sins.sin.s_addr;
adns_submit_reverse(dns_state, (struct sockaddr *)&ipn.sins.sin, adns_r_ptr,
adns_qf_owner|adns_qf_cname_loose|adns_qf_quoteok_anshost,
req, &req->query);
}
#else
ipn.sins.sin.sin_family = AF_INET;
ipn.sins.sin.sin_port = 0;
ipn.sins.sin.sin_addr.s_addr = addr->sins.sin.s_addr;
adns_submit_reverse(dns_state, (struct sockaddr *)&ipn.sins.sin, adns_r_ptr,
adns_qf_owner|adns_qf_cname_loose|adns_qf_quoteok_anshost,
req, &req->query);
#endif
}
/* int adns_getaddr(struct irc_inaddr *addr, int aftype,
* struct DNSQuery *req, int arpa_type);
* Input: An address, an address family, a DNSQuery structure.
* Output: None
* Side effects: Sets up a query entry and sends it to the DNS server to
* resolve an IP address to a domain name.
*/
int
adns_getaddr(struct sockaddr *addr, int aftype, struct DNSQuery *req)
{
int result;
int flags = adns_r_ptr;
assert(dns_state->nservers > 0);
#ifdef IPV6
if(addr->sa_family == AF_INET6)
flags = adns_r_ptr_ip6;
#endif
result = adns_submit_reverse(dns_state,
(struct sockaddr *) addr,
flags,
adns_qf_owner | adns_qf_cname_loose |
adns_qf_quoteok_anshost, req, &req->query);
dns_select();
return result;
}
