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Correctly sanitise DNS header bits in answer when recreating query for retry.

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swigger
2015-06-01 20:54:59 +01:00
committed by Simon Kelley
parent 403de05925
commit bd7bfa21c4
2 changed files with 9 additions and 8 deletions
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14
src/dns-protocol.h
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@@ -84,15 +84,15 @@ struct dns_header {
u16 qdcount,ancount,nscount,arcount;
};
#define HB3_QR 0x80
#define HB3_QR 0x80 /* Query */
#define HB3_OPCODE 0x78
#define HB3_AA 0x04
#define HB3_TC 0x02
#define HB3_RD 0x01
#define HB3_AA 0x04 /* Authoritative Answer */
#define HB3_TC 0x02 /* TrunCated */
#define HB3_RD 0x01 /* Recursion Desired */
#define HB4_RA 0x80
#define HB4_AD 0x20
#define HB4_CD 0x10
#define HB4_RA 0x80 /* Recursion Available */
#define HB4_AD 0x20 /* Authenticated Data */
#define HB4_CD 0x10 /* Checking Disabled */
#define HB4_RCODE 0x0f
#define OPCODE(x) (((x)->hb3 & HB3_OPCODE) >> 3)