diff options
Diffstat (limited to 'dns_name.c')
-rw-r--r-- | dns_name.c | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -2,6 +2,7 @@ #include "uint16.h" #include "byte.h" #include "dns.h" +#include "ip6.h" static char *q = 0; @@ -46,3 +47,24 @@ int dns_name4(stralloc *out,const char ip[4]) dns_domain_free(&q); return 0; } + +int dns_name6_inner(stralloc *out,const char ip[16],int t) +{ + char name[DNS_NAME6_DOMAIN]; + + dns_name6_domain(name,ip,t); + if (dns_resolve(name,DNS_T_PTR) == -1) return -1; + if (dns_name_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen) == -1) return -1; + dns_transmit_free(&dns_resolve_tx); + dns_domain_free(&q); + return 0; +} + +int dns_name6(stralloc *out,const char ip[16]) +{ + if (ip6_isv4mapped(ip)) + return dns_name4(out,ip+12); + if (dns_name6_inner(out,ip,DNS_IP6_ARPA)) return -1; + if (!out->len) return dns_name6_inner(out,ip,DNS_IP6_INT); + return 0; +} |