X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-core%2Frr.h;h=794b83fb1f4aa7f242f2c9bca09c2104c2ce0e76;hb=9c0f9c65093cfa53d45f9b68782321eb8063a032;hp=63dc18d202b1ba7ddbfa79b73a8449cb7a562cc0;hpb=943a6b93697fc0a7bcd0cc574744d7de609c189c;p=catta diff --git a/avahi-core/rr.h b/avahi-core/rr.h index 63dc18d..794b83f 100644 --- a/avahi-core/rr.h +++ b/avahi-core/rr.h @@ -1,21 +1,19 @@ #ifndef foorrhfoo #define foorrhfoo -/* $Id$ */ - /*** 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 @@ -33,40 +31,28 @@ AVAHI_C_DECL_BEGIN -/** DNS record types, see RFC 1035 */ +/** DNS record types, see RFC 1035, in addition to those defined in defs.h */ enum { - AVAHI_DNS_TYPE_A = 0x01, - AVAHI_DNS_TYPE_NS = 0x02, - AVAHI_DNS_TYPE_CNAME = 0x05, - AVAHI_DNS_TYPE_SOA = 0x06, - AVAHI_DNS_TYPE_PTR = 0x0C, - AVAHI_DNS_TYPE_HINFO = 0x0D, - AVAHI_DNS_TYPE_MX = 0x0F, - AVAHI_DNS_TYPE_TXT = 0x10, - AVAHI_DNS_TYPE_AAAA = 0x1C, - AVAHI_DNS_TYPE_SRV = 0x21, - AVAHI_DNS_TYPE_ANY = 0xFF /**< Special query type for requesting all records */ + AVAHI_DNS_TYPE_ANY = 0xFF, /**< Special query type for requesting all records */ + AVAHI_DNS_TYPE_OPT = 41, /**< EDNS0 option */ + AVAHI_DNS_TYPE_TKEY = 249, + AVAHI_DNS_TYPE_TSIG = 250, + AVAHI_DNS_TYPE_IXFR = 251, + AVAHI_DNS_TYPE_AXFR = 252 }; -/** DNS record classes, see RFC 1035 */ +/** DNS record classes, see RFC 1035, in addition to those defined in defs.h */ enum { - AVAHI_DNS_CLASS_IN = 0x01, /**< Probably the only class we will ever use */ AVAHI_DNS_CLASS_ANY = 0xFF, /**< Special query type for requesting all records */ AVAHI_DNS_CACHE_FLUSH = 0x8000, /**< Not really a class but a bit which may be set in response packets, see mDNS spec for more information */ AVAHI_DNS_UNICAST_RESPONSE = 0x8000 /**< Not really a class but a bit which may be set in query packets, see mDNS spec for more information */ }; -/** The default TTL for RRs which contain a host name of some kind. */ -#define AVAHI_DEFAULT_TTL_HOST_NAME (120) - -/** The default TTL for all other records. */ -#define AVAHI_DEFAULT_TTL (75*60) - /** Encapsulates a DNS query key consisting of class, type and name. Use avahi_key_ref()/avahi_key_unref() for manipulating the reference counter. The structure is intended to be treated as "immutable", no changes should be imposed after creation */ -typedef struct { +typedef struct AvahiKey { int ref; /**< Reference counter */ char *name; /**< Record name */ uint16_t clazz; /**< Record class, one of the AVAHI_DNS_CLASS_xxx constants */ @@ -76,19 +62,19 @@ typedef struct { /** Encapsulates a DNS resource record. The structure is intended to * be treated as "immutable", no changes should be imposed after * creation. */ -typedef struct { +typedef struct AvahiRecord { int ref; /**< Reference counter */ AvahiKey *key; /**< Reference to the query key of this record */ - + uint32_t ttl; /**< DNS TTL of this record */ union { - + struct { void* data; uint16_t size; } generic; /**< Generic record data for unknown types */ - + struct { uint16_t priority; uint16_t weight; @@ -98,7 +84,7 @@ typedef struct { struct { char *name; - } ptr; /**< Data for PTR an CNAME records */ + } ptr, ns, cname; /**< Data for PTR, NS and CNAME records */ struct { char *cpu; @@ -118,15 +104,12 @@ typedef struct { } aaaa; /**< Data for AAAA records */ } data; /**< Record data */ - + } AvahiRecord; /** Create a new AvahiKey object. The reference counter will be set to 1. */ AvahiKey *avahi_key_new(const char *name, uint16_t clazz, uint16_t type); -/** Creaze new AvahiKey object based on an existing key but replaceing the type by CNAME */ -AvahiKey *avahi_key_new_cname(AvahiKey *key); - /** Increase the reference counter of an AvahiKey object by one */ AvahiKey *avahi_key_ref(AvahiKey *k); @@ -136,18 +119,7 @@ void avahi_key_unref(AvahiKey *k); /** Check whether two AvahiKey object contain the same * data. AVAHI_DNS_CLASS_ANY/AVAHI_DNS_TYPE_ANY are treated like any * other class/type. */ -int avahi_key_equal(const AvahiKey *a, const AvahiKey *b); - -/** Match a key to a key pattern. The pattern has a type of -AVAHI_DNS_CLASS_ANY, the classes are taken to be equal. Same for the -type. If the pattern has neither class nor type with ANY constants, -this function is identical to avahi_key_equal(). In contrast to -avahi_equal() this function is not commutative. */ -int avahi_key_pattern_match(const AvahiKey *pattern, const AvahiKey *k); - -/** Check whether a key is a pattern key, i.e. the class/type has a - * value of AVAHI_DNS_CLASS_ANY/AVAHI_DNS_TYPE_ANY */ -int avahi_key_is_pattern(const AvahiKey *k); +int avahi_key_equal(const AvahiKey *a, const AvahiKey *b); /** Return a numeric hash value for a key for usage in hash tables. */ unsigned avahi_key_hash(const AvahiKey *k); @@ -178,30 +150,11 @@ char *avahi_key_to_string(const AvahiKey *k); /** Create a textual representation of the specified record, similar * in style to BIND zone file data. avahi_free() the result! */ -char *avahi_record_to_string(const AvahiRecord *r); +char *avahi_record_to_string(const AvahiRecord *r); /** Check whether two records are equal (regardless of the TTL */ int avahi_record_equal_no_ttl(const AvahiRecord *a, const AvahiRecord *b); -/** Make a deep copy of an AvahiRecord object */ -AvahiRecord *avahi_record_copy(AvahiRecord *r); - -/** Returns a maximum estimate for the space that is needed to store - * this key in a DNS packet. */ -size_t avahi_key_get_estimate_size(AvahiKey *k); - -/** Returns a maximum estimate for the space that is needed to store - * the record in a DNS packet. */ -size_t avahi_record_get_estimate_size(AvahiRecord *r); - -/** Do a mDNS spec conforming lexicographical comparison of the two - * records. Return a negative value if a < b, a positive if a > b, - * zero if equal. */ -int avahi_record_lexicographical_compare(AvahiRecord *a, AvahiRecord *b); - -/** Return 1 if the specified record is an mDNS goodbye record. i.e. TTL is zero. */ -int avahi_record_is_goodbye(AvahiRecord *r); - /** Check whether the specified key is valid */ int avahi_key_is_valid(AvahiKey *k); @@ -214,6 +167,9 @@ int avahi_rdata_parse(AvahiRecord *record, const void* rdata, size_t size); /** Serialize an AvahiRecord object into binary rdata. This function is actually implemented in dns.c */ size_t avahi_rdata_serialize(AvahiRecord *record, void *rdata, size_t max_size); +/** Return TRUE if the AvahiRecord object is a link-local A or AAAA address */ +int avahi_record_is_link_local_address(const AvahiRecord *r); + AVAHI_C_DECL_END #endif