diff options
| author | Lennart Poettering <lennart@poettering.net> | 2014-07-16 18:03:46 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2014-07-16 18:03:46 +0200 |
| commit | 3cb10d3a0b1b6a7c44f307f2abb5215104e16941 (patch) | |
| tree | b6e20ffbbbb982bdff0766e69304866a5004c72e /src/resolve/resolved-dns-packet.h | |
| parent | acbc5016027950efd543e0b054e6370a8a4e17f9 (diff) | |
dns-domain: introduce macros for accessing all DNS header fields
Diffstat (limited to 'src/resolve/resolved-dns-packet.h')
| -rw-r--r-- | src/resolve/resolved-dns-packet.h | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h index 18ed4ba0d7..77edc05a19 100644 --- a/src/resolve/resolved-dns-packet.h +++ b/src/resolve/resolved-dns-packet.h @@ -62,6 +62,26 @@ static inline uint8_t* DNS_PACKET_DATA(DnsPacket *p) { } #define DNS_PACKET_HEADER(p) ((DnsPacketHeader*) DNS_PACKET_DATA(p)) +#define DNS_PACKET_ID(p) DNS_PACKET_HEADER(p)->id +#define DNS_PACKET_QR(p) ((be16toh(DNS_PACKET_HEADER(p)->flags) >> 15) & 1) +#define DNS_PACKET_OPCODE(p) ((be16toh(DNS_PACKET_HEADER(p)->flags) >> 11) & 15) +#define DNS_PACKET_RCODE(p) (be16toh(DNS_PACKET_HEADER(p)->flags) & 15) +#define DNS_PACKET_QDCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->qdcount) +#define DNS_PACKET_ANCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->ancount) +#define DNS_PACKET_NSCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->nscount) +#define DNS_PACKET_ARCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->arcount) + +#define DNS_PACKET_MAKE_FLAGS(qr, opcode, aa, tc, rd, ra, ad, cd, rcode) \ + (((uint16_t) !!qr << 15) | \ + ((uint16_t) (opcode & 15) << 11) | \ + ((uint16_t) !!aa << 10) | \ + ((uint16_t) !!tc << 9) | \ + ((uint16_t) !!rd << 8) | \ + ((uint16_t) !!ra << 7) | \ + ((uint16_t) !!ad << 5) | \ + ((uint16_t) !!cd << 4) | \ + ((uint16_t) (rcode & 15))) + int dns_packet_new(DnsPacket **p, size_t mtu); int dns_packet_new_query(DnsPacket **p, size_t mtu); @@ -92,19 +112,6 @@ int dns_packet_read_rr(DnsPacket *p, DnsResourceRecord **ret, size_t *start); int dns_packet_skip_question(DnsPacket *p); -#define DNS_PACKET_MAKE_FLAGS(qr, opcode, aa, tc, rd, ra, ad, cd, rcode) \ - (((uint16_t) !!qr << 15) | \ - ((uint16_t) (opcode & 15) << 11) | \ - ((uint16_t) !!aa << 10) | \ - ((uint16_t) !!tc << 9) | \ - ((uint16_t) !!rd << 8) | \ - ((uint16_t) !!ra << 7) | \ - ((uint16_t) !!ad << 5) | \ - ((uint16_t) !!cd << 4) | \ - ((uint16_t) (rcode & 15))) - -#define DNS_PACKET_RCODE(p) (be16toh(DNS_PACKET_HEADER(p)->flags) & 15) - enum { DNS_RCODE_SUCCESS = 0, DNS_RCODE_FORMERR = 1, |