diff options
author | Jannis Hoffmann <jannis@fehcom.de> | 2024-07-09 13:58:20 +0200 |
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committer | Jannis Hoffmann <jannis@fehcom.de> | 2024-07-09 13:58:20 +0200 |
commit | 249866e3d1e11dc72eaa1305f4bb479ded92ef38 (patch) | |
tree | 7118c5f58e29fe61c100e4d067bb90ba8d52589e /dnsstub/dns_name.c | |
parent | 96cf8dffe4f7b0b910f790066ae622dc429eb522 (diff) |
reorganized file structure
Moved c files into src/.
Corrected VERSION file.
Removed BUILD and FILES.
Diffstat (limited to 'dnsstub/dns_name.c')
-rw-r--r-- | dnsstub/dns_name.c | 80 |
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); -} |