git.meshlink.io Git - catta/blob - libavahi-core/dns.h

   1 #ifndef foodnshfoo
   2 #define foodnshfoo
   3
   4 #include <glib.h>
   5
   6 #include "rr.h"
   7
   8 #define AVAHI_DNS_PACKET_MAX_SIZE 9000
   9 #define AVAHI_DNS_PACKET_HEADER_SIZE 12
  10
  11 typedef struct _AvahiDnsPacket {
  12     guint size, rindex, max_size;
  13     GHashTable *name_table; /* for name compression */
  14 } AvahiDnsPacket;
  15
  16
  17 #define AVAHI_DNS_PACKET_DATA(p) (((guint8*) p) + sizeof(AvahiDnsPacket))
  18
  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);
  22
  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);
  26
  27 guint8 *avahi_dns_packet_extend(AvahiDnsPacket *p, guint l);
  28
  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);
  36
  37 gint avahi_dns_packet_is_query(AvahiDnsPacket *p);
  38 gint avahi_dns_packet_check_valid(AvahiDnsPacket *p);
  39
  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);
  47
  48 gconstpointer avahi_dns_packet_get_rptr(AvahiDnsPacket *p);
  49
  50 gint avahi_dns_packet_skip(AvahiDnsPacket *p, guint length);
  51
  52 gboolean avahi_dns_packet_is_empty(AvahiDnsPacket *p);
  53 guint avahi_dns_packet_space(AvahiDnsPacket *p);
  54
  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
  61
  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)
  66
  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)))
  77
  78
  79 gchar *avahi_unescape_label(gchar *dest, guint size, const gchar **name);
  80
  81 #endif
  82