diff options
author | Lennart Poettering <lennart@poettering.net> | 2005-01-21 22:08:15 +0000 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2005-01-21 22:08:15 +0000 |
commit | 4ba1a4b0b4488e5058af67b789187735b529075e (patch) | |
tree | d1d0f8ee6c36659b552fc371cad67678ae90b7c8 /dns.h | |
parent | b25580915c7223c276348c39d5e7ed496a58a26e (diff) |
add infrastrtcur for creating and sending DNS packets
git-svn-id: file:///home/lennart/svn/public/avahi/trunk@10 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
Diffstat (limited to 'dns.h')
-rw-r--r-- | dns.h | 55 |
1 files changed, 55 insertions, 0 deletions
@@ -0,0 +1,55 @@ +#ifndef foodnshfoo +#define foodnshfoo + +#include <glib.h> + +#define FLX_DNS_MAX_PACKET_SIZE 9000 + +typedef struct _flxDnsPacket { + guint size, rindex; + guint8 data[FLX_DNS_MAX_PACKET_SIZE]; +} flxDnsPacket; + +flxDnsPacket* flx_dns_packet_new(void); +void flx_dns_packet_free(flxDnsPacket *p); +void flx_dns_packet_set_field(flxDnsPacket *p, guint index, guint16 v); +guint16 flx_dns_packet_get_field(flxDnsPacket *p, guint index); + +guint8 *flx_dns_packet_append_uint16(flxDnsPacket *p, guint16 v); +guint8 *flx_dns_packet_append_name(flxDnsPacket *p, const gchar *name); +guint8 *flx_dns_packet_append_name_compressed(flxDnsPacket *p, const gchar *name, guint8 *prev); +guint8 *flx_dns_packet_extend(flxDnsPacket *p, guint l); +gint flx_dns_packet_check_valid_response(flxDnsPacket *p); +gint flx_dns_packet_check_valid(flxDnsPacket *p); + +gint flx_dns_packet_consume_name(flxDnsPacket *p, gchar *ret_name, guint l); +gint flx_dns_packet_consume_uint16(flxDnsPacket *p, guint16 *ret_v); +gint flx_dns_packet_consume_uint32(flxDnsPacket *p, guint32 *ret_v); +gint flx_dns_packet_consume_bytes(flxDnsPacket *p, gpointer ret_data, guint l); +gint flx_dns_packet_skip(flxDnsPacket *p, guint length); + +#define DNS_FIELD_ID 0 +#define DNS_FIELD_FLAGS 1 +#define DNS_FIELD_QDCOUNT 2 +#define DNS_FIELD_ANCOUNT 3 +#define DNS_FIELD_NSCOUNT 4 +#define DNS_FIELD_ARCOUNT 5 + +#define DNS_FLAG_QR (1 << 15) +#define DNS_FLAG_OPCODE (15 << 11) +#define DNS_FLAG_RCODE (15) + +#define DNS_FLAGS(qr, opcode, aa, tc, rd, ra, z, ad, cd, rcode) \ + (((guint16) !!qr << 15) | \ + ((guint16) (opcode & 15) << 11) | \ + ((guint16) !!aa << 10) | \ + ((guint16) !!tc << 9) | \ + ((guint16) !!rd << 8) | \ + ((guint16) !!ra << 7) | \ + ((guint16) !!ad << 5) | \ + ((guint16) !!cd << 4) | \ + ((guint16) (rd & 15))) + + +#endif + |