6 #define FLX_DNS_MAX_PACKET_SIZE 9000
8 typedef struct _flxDnsPacket {
10 guint8 data[FLX_DNS_MAX_PACKET_SIZE];
13 flxDnsPacket* flx_dns_packet_new(void);
14 void flx_dns_packet_free(flxDnsPacket *p);
15 void flx_dns_packet_set_field(flxDnsPacket *p, guint index, guint16 v);
16 guint16 flx_dns_packet_get_field(flxDnsPacket *p, guint index);
18 guint8 *flx_dns_packet_append_uint16(flxDnsPacket *p, guint16 v);
19 guint8 *flx_dns_packet_append_name(flxDnsPacket *p, const gchar *name);
20 guint8 *flx_dns_packet_append_name_compressed(flxDnsPacket *p, const gchar *name, guint8 *prev);
21 guint8 *flx_dns_packet_extend(flxDnsPacket *p, guint l);
22 gint flx_dns_packet_check_valid_response(flxDnsPacket *p);
23 gint flx_dns_packet_check_valid(flxDnsPacket *p);
25 gint flx_dns_packet_consume_name(flxDnsPacket *p, gchar *ret_name, guint l);
26 gint flx_dns_packet_consume_uint16(flxDnsPacket *p, guint16 *ret_v);
27 gint flx_dns_packet_consume_uint32(flxDnsPacket *p, guint32 *ret_v);
28 gint flx_dns_packet_consume_bytes(flxDnsPacket *p, gpointer ret_data, guint l);
29 gint flx_dns_packet_skip(flxDnsPacket *p, guint length);
31 #define DNS_FIELD_ID 0
32 #define DNS_FIELD_FLAGS 1
33 #define DNS_FIELD_QDCOUNT 2
34 #define DNS_FIELD_ANCOUNT 3
35 #define DNS_FIELD_NSCOUNT 4
36 #define DNS_FIELD_ARCOUNT 5
38 #define DNS_FLAG_QR (1 << 15)
39 #define DNS_FLAG_OPCODE (15 << 11)
40 #define DNS_FLAG_RCODE (15)
42 #define DNS_FLAGS(qr, opcode, aa, tc, rd, ra, z, ad, cd, rcode) \
43 (((guint16) !!qr << 15) | \
44 ((guint16) (opcode & 15) << 11) | \
45 ((guint16) !!aa << 10) | \
46 ((guint16) !!tc << 9) | \
47 ((guint16) !!rd << 8) | \
48 ((guint16) !!ra << 7) | \
49 ((guint16) !!ad << 5) | \
50 ((guint16) !!cd << 4) | \
51 ((guint16) (rd & 15)))