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Diffstat (limited to 'src/dnsstub/dns_name.c')
-rw-r--r--src/dnsstub/dns_name.c56
1 files changed, 30 insertions, 26 deletions
diff --git a/src/dnsstub/dns_name.c b/src/dnsstub/dns_name.c
index 0723a8f..db4565a 100644
--- a/src/dnsstub/dns_name.c
+++ b/src/dnsstub/dns_name.c
@@ -1,8 +1,8 @@
-#include "stralloc.h"
-#include "uint_t.h"
#include "byte.h"
-#include "ip.h"
#include "dnsresolv.h"
+#include "ip.h"
+#include "stralloc.h"
+#include "uint_t.h"
/**
@file dns_name.c
@@ -13,28 +13,32 @@
static char *q = 0;
-int dns_name_packet(stralloc *out,const char *buf,unsigned int len)
+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;
+ 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 = 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;
+ 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;
@@ -43,38 +47,38 @@ int dns_name_packet(stralloc *out,const char *buf,unsigned int len)
return 0;
}
-int dns_name4(stralloc *out,const char ip[4])
+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_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 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_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])
+int dns_name(stralloc *out, const char ip[16])
{
if (ip6_isv4mapped(ip))
- return dns_name4(out,ip+12);
+ return dns_name4(out, ip + 12);
else
- return dns_name6(out,ip);
+ return dns_name6(out, ip);
}