8 #define FLX_DNS_MAX_PACKET_SIZE 9000
10 typedef struct _flxDnsPacket {
12 guint8 data[FLX_DNS_MAX_PACKET_SIZE];
15 flxDnsPacket* flx_dns_packet_new(void);
16 void flx_dns_packet_free(flxDnsPacket *p);
17 void flx_dns_packet_set_field(flxDnsPacket *p, guint index, guint16 v);
18 guint16 flx_dns_packet_get_field(flxDnsPacket *p, guint index);
20 guint8 *flx_dns_packet_extend(flxDnsPacket *p, guint l);
22 guint8 *flx_dns_packet_append_uint16(flxDnsPacket *p, guint16 v);
23 guint8 *flx_dns_packet_append_uint32(flxDnsPacket *p, guint32 v);
24 guint8 *flx_dns_packet_append_name(flxDnsPacket *p, const gchar *name);
25 guint8 *flx_dns_packet_append_name_compressed(flxDnsPacket *p, const gchar *name, guint8 *prev);
26 guint8 *flx_dns_packet_append_bytes(flxDnsPacket *p, gconstpointer, guint l);
27 guint8* flx_dns_packet_append_key(flxDnsPacket *p, flxKey *k);
28 guint8* flx_dns_packet_append_record(flxDnsPacket *p, flxRecord *r, gboolean cache_flush);
30 gint flx_dns_packet_is_query(flxDnsPacket *p);
31 gint flx_dns_packet_check_valid(flxDnsPacket *p);
33 gint flx_dns_packet_consume_uint16(flxDnsPacket *p, guint16 *ret_v);
34 gint flx_dns_packet_consume_uint32(flxDnsPacket *p, guint32 *ret_v);
35 gint flx_dns_packet_consume_name(flxDnsPacket *p, gchar *ret_name, guint l);
36 gint flx_dns_packet_consume_bytes(flxDnsPacket *p, gpointer ret_data, guint l);
37 flxKey* flx_dns_packet_consume_key(flxDnsPacket *p);
38 flxRecord* flx_dns_packet_consume_record(flxDnsPacket *p, gboolean *ret_cache_flush);
40 gconstpointer flx_dns_packet_get_rptr(flxDnsPacket *p);
44 gint flx_dns_packet_skip(flxDnsPacket *p, guint length);
46 #define DNS_FIELD_ID 0
47 #define DNS_FIELD_FLAGS 1
48 #define DNS_FIELD_QDCOUNT 2
49 #define DNS_FIELD_ANCOUNT 3
50 #define DNS_FIELD_NSCOUNT 4
51 #define DNS_FIELD_ARCOUNT 5
53 #define DNS_FLAG_QR (1 << 15)
54 #define DNS_FLAG_OPCODE (15 << 11)
55 #define DNS_FLAG_RCODE (15)
57 #define DNS_FLAGS(qr, opcode, aa, tc, rd, ra, z, ad, cd, rcode) \
58 (((guint16) !!qr << 15) | \
59 ((guint16) (opcode & 15) << 11) | \
60 ((guint16) !!aa << 10) | \
61 ((guint16) !!tc << 9) | \
62 ((guint16) !!rd << 8) | \
63 ((guint16) !!ra << 7) | \
64 ((guint16) !!ad << 5) | \
65 ((guint16) !!cd << 4) | \
66 ((guint16) (rd & 15)))
69 #define MDNS_CACHE_FLUSH 0x8000