8 #define AVAHI_DNS_PACKET_MAX_SIZE 9000
9 #define AVAHI_DNS_PACKET_HEADER_SIZE 12
11 typedef struct _AvahiDnsPacket {
12 guint size, rindex, max_size;
13 GHashTable *name_table; /* for name compression */
17 #define AVAHI_DNS_PACKET_DATA(p) (((guint8*) p) + sizeof(AvahiDnsPacket))
19 AvahiDnsPacket* avahi_dns_packet_new(guint size);
20 AvahiDnsPacket* avahi_dns_packet_new_query(guint size);
21 AvahiDnsPacket* avahi_dns_packet_new_response(guint size);
23 void avahi_dns_packet_free(AvahiDnsPacket *p);
24 void avahi_dns_packet_set_field(AvahiDnsPacket *p, guint index, guint16 v);
25 guint16 avahi_dns_packet_get_field(AvahiDnsPacket *p, guint index);
27 guint8 *avahi_dns_packet_extend(AvahiDnsPacket *p, guint l);
29 guint8 *avahi_dns_packet_append_uint16(AvahiDnsPacket *p, guint16 v);
30 guint8 *avahi_dns_packet_append_uint32(AvahiDnsPacket *p, guint32 v);
31 guint8 *avahi_dns_packet_append_name(AvahiDnsPacket *p, const gchar *name);
32 guint8 *avahi_dns_packet_append_bytes(AvahiDnsPacket *p, gconstpointer, guint l);
33 guint8* avahi_dns_packet_append_key(AvahiDnsPacket *p, AvahiKey *k, gboolean unicast_response);
34 guint8* avahi_dns_packet_append_record(AvahiDnsPacket *p, AvahiRecord *r, gboolean cache_flush);
35 guint8* avahi_dns_packet_append_string(AvahiDnsPacket *p, const gchar *s);
37 gint avahi_dns_packet_is_query(AvahiDnsPacket *p);
38 gint avahi_dns_packet_check_valid(AvahiDnsPacket *p);
40 gint avahi_dns_packet_consume_uint16(AvahiDnsPacket *p, guint16 *ret_v);
41 gint avahi_dns_packet_consume_uint32(AvahiDnsPacket *p, guint32 *ret_v);
42 gint avahi_dns_packet_consume_name(AvahiDnsPacket *p, gchar *ret_name, guint l);
43 gint avahi_dns_packet_consume_bytes(AvahiDnsPacket *p, gpointer ret_data, guint l);
44 AvahiKey* avahi_dns_packet_consume_key(AvahiDnsPacket *p, gboolean *ret_unicast_response);
45 AvahiRecord* avahi_dns_packet_consume_record(AvahiDnsPacket *p, gboolean *ret_cache_flush);
46 gint avahi_dns_packet_consume_string(AvahiDnsPacket *p, gchar *ret_string, guint l);
48 gconstpointer avahi_dns_packet_get_rptr(AvahiDnsPacket *p);
50 gint avahi_dns_packet_skip(AvahiDnsPacket *p, guint length);
52 gboolean avahi_dns_packet_is_empty(AvahiDnsPacket *p);
53 guint avahi_dns_packet_space(AvahiDnsPacket *p);
55 #define AVAHI_DNS_FIELD_ID 0
56 #define AVAHI_DNS_FIELD_FLAGS 1
57 #define AVAHI_DNS_FIELD_QDCOUNT 2
58 #define AVAHI_DNS_FIELD_ANCOUNT 3
59 #define AVAHI_DNS_FIELD_NSCOUNT 4
60 #define AVAHI_DNS_FIELD_ARCOUNT 5
62 #define AVAHI_DNS_FLAG_QR (1 << 15)
63 #define AVAHI_DNS_FLAG_OPCODE (15 << 11)
64 #define AVAHI_DNS_FLAG_RCODE (15)
65 #define AVAHI_DNS_FLAG_TC (1 << 9)
67 #define AVAHI_DNS_FLAGS(qr, opcode, aa, tc, rd, ra, z, ad, cd, rcode) \
68 (((guint16) !!qr << 15) | \
69 ((guint16) (opcode & 15) << 11) | \
70 ((guint16) !!aa << 10) | \
71 ((guint16) !!tc << 9) | \
72 ((guint16) !!rd << 8) | \
73 ((guint16) !!ra << 7) | \
74 ((guint16) !!ad << 5) | \
75 ((guint16) !!cd << 4) | \
76 ((guint16) (rd & 15)))
79 gchar *avahi_unescape_label(gchar *dest, guint size, const gchar **name);