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Diffstat (limited to 'dnsstub/dns_name.c')
-rw-r--r--dnsstub/dns_name.c80
1 files changed, 0 insertions, 80 deletions
diff --git a/dnsstub/dns_name.c b/dnsstub/dns_name.c
deleted file mode 100644
index 0723a8f..0000000
--- a/dnsstub/dns_name.c
+++ /dev/null
@@ -1,80 +0,0 @@
-#include "stralloc.h"
-#include "uint_t.h"
-#include "byte.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_name.c
- @author djb, fefe, feh
- @source ucspi-tcp
- @brief DNS name query (ptr)
-*/
-
-static char *q = 0;
-
-int dns_name_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[12];
- uint16 numanswers;
- uint16 datalen;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_PTR))
- if (byte_equal(header + 2,2,DNS_C_IN)) {
- if (!dns_packet_getname(buf,len,pos,&q)) return DNS_ERR;
- if (dns_domain_todot_cat(out,q) <= 0) return DNS_ERR;
- return 1;
- }
- pos += datalen;
- }
-
- return 0;
-}
-
-int dns_name4(stralloc *out,const char ip[4])
-{
- int rc;
- char name[DNS_NAME4_DOMAIN];
-
- dns_name4_domain(name,ip);
- if (dns_resolve(name,DNS_T_PTR) < 0) return DNS_ERR;
- if ((rc = dns_name_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
-
- return rc;
-}
-
-int dns_name6(stralloc *out,const char ip[16])
-{
- int rc;
- char name[DNS_NAME6_DOMAIN];
-
- dns_name6_domain(name,ip);
- if (dns_resolve(name,DNS_T_PTR) < 0) return DNS_ERR;
- if ((rc = dns_name_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
-
- return rc;
-}
-
-int dns_name(stralloc *out,const char ip[16])
-{
- if (ip6_isv4mapped(ip))
- return dns_name4(out,ip+12);
- else
- return dns_name6(out,ip);
-}