Branching for wide-area publishing work

  


git-svn-id: file:///home/lennart/svn/public/avahi/branches/federico@1344 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe

1 files changed, 112 insertions, 0 deletions

diff --git a/trunk/avahi-core/dns.h b/trunk/avahi-core/dns.h
new file mode 100644
index 0000000..d1c06a5
--- /dev/null
+++ b/trunk/avahi-core/dns.h
@@ -0,0 +1,112 @@
+#ifndef foodnshfoo
+#define foodnshfoo
+
+/* $Id$ */
+
+/***
+  This file is part of avahi.
+ 
+  avahi is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+ 
+  avahi is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+  Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public
+  License along with avahi; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#include "rr.h"
+#include "hashmap.h"
+
+#define AVAHI_DNS_PACKET_SIZE_MAX 9000
+#define AVAHI_DNS_PACKET_HEADER_SIZE 12
+#define AVAHI_DNS_PACKET_EXTRA_SIZE 48
+#define AVAHI_DNS_LABELS_MAX 127
+
+typedef struct AvahiDnsPacket {
+    size_t size, rindex, max_size;
+    AvahiHashmap *name_table; /* for name compression */
+    uint8_t *data;
+} AvahiDnsPacket;
+
+#define AVAHI_DNS_PACKET_DATA(p) ((p)->data ? (p)->data : ((uint8_t*) p) + sizeof(AvahiDnsPacket))
+
+AvahiDnsPacket* avahi_dns_packet_new(unsigned mtu);
+AvahiDnsPacket* avahi_dns_packet_new_query(unsigned mtu);
+AvahiDnsPacket* avahi_dns_packet_new_response(unsigned mtu, int aa);
+
+AvahiDnsPacket* avahi_dns_packet_new_reply(AvahiDnsPacket* p, unsigned mtu, int copy_queries, int aa);
+
+void avahi_dns_packet_free(AvahiDnsPacket *p);
+void avahi_dns_packet_set_field(AvahiDnsPacket *p, unsigned idx, uint16_t v);
+uint16_t avahi_dns_packet_get_field(AvahiDnsPacket *p, unsigned idx);
+void avahi_dns_packet_inc_field(AvahiDnsPacket *p, unsigned idx);
+
+uint8_t *avahi_dns_packet_extend(AvahiDnsPacket *p, size_t l);
+
+uint8_t *avahi_dns_packet_append_uint16(AvahiDnsPacket *p, uint16_t v);
+uint8_t *avahi_dns_packet_append_uint32(AvahiDnsPacket *p, uint32_t v);
+uint8_t *avahi_dns_packet_append_name(AvahiDnsPacket *p, const char *name);
+uint8_t *avahi_dns_packet_append_bytes(AvahiDnsPacket  *p, const void *d, size_t l);
+uint8_t* avahi_dns_packet_append_key(AvahiDnsPacket *p, AvahiKey *k, int unicast_response);
+uint8_t* avahi_dns_packet_append_record(AvahiDnsPacket *p, AvahiRecord *r, int cache_flush, unsigned max_ttl);
+uint8_t* avahi_dns_packet_append_string(AvahiDnsPacket *p, const char *s);
+
+int avahi_dns_packet_is_query(AvahiDnsPacket *p);
+int avahi_dns_packet_check_valid(AvahiDnsPacket *p);
+int avahi_dns_packet_check_valid_multicast(AvahiDnsPacket *p);
+
+int avahi_dns_packet_consume_uint16(AvahiDnsPacket *p, uint16_t *ret_v);
+int avahi_dns_packet_consume_uint32(AvahiDnsPacket *p, uint32_t *ret_v);
+int avahi_dns_packet_consume_name(AvahiDnsPacket *p, char *ret_name, size_t l);
+int avahi_dns_packet_consume_bytes(AvahiDnsPacket *p, void* ret_data, size_t l);
+AvahiKey* avahi_dns_packet_consume_key(AvahiDnsPacket *p, int *ret_unicast_response);
+AvahiRecord* avahi_dns_packet_consume_record(AvahiDnsPacket *p, int *ret_cache_flush);
+int avahi_dns_packet_consume_string(AvahiDnsPacket *p, char *ret_string, size_t l);
+
+const void* avahi_dns_packet_get_rptr(AvahiDnsPacket *p);
+
+int avahi_dns_packet_skip(AvahiDnsPacket *p, size_t length);
+
+int avahi_dns_packet_is_empty(AvahiDnsPacket *p);
+size_t avahi_dns_packet_space(AvahiDnsPacket *p);
+
+#define AVAHI_DNS_FIELD_ID 0
+#define AVAHI_DNS_FIELD_FLAGS 1
+#define AVAHI_DNS_FIELD_QDCOUNT 2
+#define AVAHI_DNS_FIELD_ANCOUNT 3
+#define AVAHI_DNS_FIELD_NSCOUNT 4
+#define AVAHI_DNS_FIELD_ARCOUNT 5
+
+#define AVAHI_DNS_FLAG_QR (1 << 15)
+#define AVAHI_DNS_FLAG_OPCODE (15 << 11)
+#define AVAHI_DNS_FLAG_RCODE (15)
+#define AVAHI_DNS_FLAG_TC (1 << 9)
+#define AVAHI_DNS_FLAG_AA (1 << 10)
+
+#define AVAHI_DNS_FLAGS(qr, opcode, aa, tc, rd, ra, z, ad, cd, rcode) \
+        (((uint16_t) !!qr << 15) |  \
+         ((uint16_t) (opcode & 15) << 11) | \
+         ((uint16_t) !!aa << 10) | \
+         ((uint16_t) !!tc << 9) | \
+         ((uint16_t) !!rd << 8) | \
+         ((uint16_t) !!ra << 7) | \
+         ((uint16_t) !!ad << 5) | \
+         ((uint16_t) !!cd << 4) | \
+         ((uint16_t) (rcode & 15)))
+
+#define AVAHI_MDNS_SUFFIX_LOCAL "local"
+#define AVAHI_MDNS_SUFFIX_ADDR_IPV4 "254.169.in-addr.arpa"
+#define AVAHI_MDNS_SUFFIX_ADDR_IPV6 "0.8.e.f.ip6.arpa"
+
+#define AVAHI_DNS_RDATA_MAX 65535
+
+#endif
+