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#include "dns.h"
/** Request the name (PTR) record for an IPv6 address. */
int dns_name6_r(struct dns_transmit *tx, struct dns_result* out, const ipv6addr* ip)
{
char name[DNS_NAME6_DOMAIN];
if (ipv6_isv4mapped(ip))
return dns_name4_r(tx, out, (ipv4addr*)&ip->addr[12]);
dns_name6_domain(name,ip);
if (dns_resolve(tx,name,DNS_T_PTR) == -1) return -1;
if (dns_name_packet(out,tx->packet,tx->packetlen) == -1) return -1;
dns_transmit_free(tx);
return 0;
}
/** \fn dns_name6(struct dns_result*, const ipv6addr*)
Request the name (PTR) record for an IPv6 address.
*/
DNS_R_FN_WRAP(name6, const ipv6addr*)
#ifdef SELFTEST_MAIN
#include "dns-responder.c"
DUMP {
int i;
for (i = 0; i < count; i++) {
obuf_putc(&outbuf, ' ');
obuf_puts(&outbuf, rr->name[i]);
}
NL();
}
RESPONSE responses[] = {
{ 1, 1, 0, {
{ "\300\014", 2, DNS_T_PTR, DNS_C_IN, 86400, "\003one\007example\003com\000", 17 },
{ "\300\014", 2, DNS_T_NS, DNS_C_IN, 123456, "\003ns1\007example\003org\000", 17 },
}
},
{ 1, 1, 0, {
{ "\300\014", 2, DNS_T_PTR, DNS_C_IN, 86400, "\003two\007example\003com\000", 17 },
{ "\300\014", 2, DNS_T_NS, DNS_C_IN, 123456, "\003ns1\007example\003com\000", 17 },
}
},
};
void doit(const ipv6addr* addr)
{
struct dns_result out = {0};
debugfn(dns_name6(&out, addr));
obuf_putf(&outbuf, "s{: count=}d{\n}", ipv6_format(addr), out.count);
dump_rrs(out.count, &out.rr);
obuf_flush(&outbuf);
}
MAIN
{
ipv6addr addr1 = {{ 0,1,2,3,4,5,6,7,8,9,0xa,0xb,0xc,0xd,0xe,0xf }};
ipv6addr addr2 = {{ 0,0,0,0,0,0,0,0,0,0,0xff,0xff,0xab,10,42,99 }};
start_dns_responder(responses, 2);
doit(&addr1);
doit(&addr2);
wait_dns_responder();
}
#endif
#ifdef SELFTEST_EXP
90: ID=XX QR=0 opcode=0 AA=0 TC=0 RD=1 RA=0 Z=0 RCODE=0 QDCOUNT=1 ANCOUNT=0 NSCOUNT=0 ARCOUNT=0
Question: f.0.e.0.d.0.c.0.b.0.a.0.9.0.8.0.7.0.6.0.5.0.4.0.3.0.2.0.1.0.0.0.ip6.arpa. QTYPE=12 QCLASS=1
result=0
1:203:405:607:809:a0b:c0d:e0f: count=1
one.example.com
43: ID=XX QR=0 opcode=0 AA=0 TC=0 RD=1 RA=0 Z=0 RCODE=0 QDCOUNT=1 ANCOUNT=0 NSCOUNT=0 ARCOUNT=0
Question: 99.42.10.171.in-addr.arpa. QTYPE=12 QCLASS=1
result=0
::ffff:171.10.42.99: count=1
two.example.com
#endif
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