resolver.h
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/*
* resolver.h
*
* DNS Resolver definitions
*
* a Net::DNS like library for C
*
* (c) NLnet Labs, 2005-2006
*
* See the file LICENSE for the license
*/
#ifndef LDNS_RESOLVER_H
#define LDNS_RESOLVER_H
#include <ldns/error.h>
#include <ldns/common.h>
#include <ldns/rr.h>
#include <ldns/tsig.h>
#include <ldns/rdata.h>
#include <ldns/packet.h>
#include <sys/time.h>
#ifdef __cplusplus
extern "C" {
#endif
#define LDNS_RESOLV_CONF "/etc/resolv.conf"
#define LDNS_RESOLV_HOSTS "/etc/hosts"
#define LDNS_RESOLV_KEYWORD -1
#define LDNS_RESOLV_DEFDOMAIN 0
#define LDNS_RESOLV_NAMESERVER 1
#define LDNS_RESOLV_SEARCH 2
#define LDNS_RESOLV_SORTLIST 3
#define LDNS_RESOLV_OPTIONS 4
#define LDNS_RESOLV_ANCHOR 5
#define LDNS_RESOLV_KEYWORDS 6
#define LDNS_RESOLV_INETANY 0
#define LDNS_RESOLV_INET 1
#define LDNS_RESOLV_INET6 2
#define LDNS_RESOLV_RTT_INF 0 /* infinity */
#define LDNS_RESOLV_RTT_MIN 1 /* reachable */
struct ldns_struct_resolver
{
uint16_t _port;
ldns_rdf **_nameservers;
size_t _nameserver_count; /* how many do we have */
size_t *_rtt;
bool _recursive;
bool _debug;
ldns_rdf *_domain;
ldns_rdf **_searchlist;
size_t _searchlist_count;
uint8_t _retry;
uint8_t _retrans;
bool _fallback;
bool _dnssec;
bool _dnssec_cd;
ldns_rr_list * _dnssec_anchors;
bool _usevc;
bool _igntc;
uint8_t _ip6;
bool _defnames;
bool _dnsrch;
struct timeval _timeout;
bool _fail;
bool _random;
int _socket;
int _axfr_soa_count;
/* when axfring we get complete packets from the server
but we want to give the caller 1 rr at a time, so
keep the current pkt */
ldns_pkt *_cur_axfr_pkt;
uint16_t _axfr_i;
/* EDNS0 available buffer size */
uint16_t _edns_udp_size;
/* serial for IXFR */
uint32_t _serial;
/* Optional tsig key for signing queries,
outgoing messages are signed if and only if both are set
*/
char *_tsig_keyname;
char *_tsig_keydata;
char *_tsig_algorithm;
ldns_rdf *_source;
};
typedef struct ldns_struct_resolver ldns_resolver;
/* prototypes */
/* read access functions */
uint16_t ldns_resolver_port(const ldns_resolver *r);
ldns_rdf *ldns_resolver_source(const ldns_resolver *r);
bool ldns_resolver_recursive(const ldns_resolver *r);
bool ldns_resolver_debug(const ldns_resolver *r);
uint8_t ldns_resolver_retry(const ldns_resolver *r);
uint8_t ldns_resolver_retrans(const ldns_resolver *r);
bool ldns_resolver_fallback(const ldns_resolver *r);
uint8_t ldns_resolver_ip6(const ldns_resolver *r);
uint16_t ldns_resolver_edns_udp_size(const ldns_resolver *r);
bool ldns_resolver_usevc(const ldns_resolver *r);
bool ldns_resolver_fail(const ldns_resolver *r);
bool ldns_resolver_defnames(const ldns_resolver *r);
bool ldns_resolver_dnsrch(const ldns_resolver *r);
bool ldns_resolver_dnssec(const ldns_resolver *r);
bool ldns_resolver_dnssec_cd(const ldns_resolver *r);
ldns_rr_list * ldns_resolver_dnssec_anchors(const ldns_resolver *r);
bool ldns_resolver_igntc(const ldns_resolver *r);
bool ldns_resolver_random(const ldns_resolver *r);
size_t ldns_resolver_nameserver_count(const ldns_resolver *r);
ldns_rdf *ldns_resolver_domain(const ldns_resolver *r);
struct timeval ldns_resolver_timeout(const ldns_resolver *r);
ldns_rdf** ldns_resolver_searchlist(const ldns_resolver *r);
ldns_rdf** ldns_resolver_nameservers(const ldns_resolver *r);
size_t * ldns_resolver_rtt(const ldns_resolver *r);
size_t ldns_resolver_nameserver_rtt(const ldns_resolver *r, size_t pos);
const char *ldns_resolver_tsig_keyname(const ldns_resolver *r);
const char *ldns_resolver_tsig_algorithm(const ldns_resolver *r);
const char *ldns_resolver_tsig_keydata(const ldns_resolver *r);
ldns_rdf* ldns_resolver_pop_nameserver(ldns_resolver *r);
size_t ldns_resolver_searchlist_count(const ldns_resolver *r);
/* write access function */
void ldns_resolver_set_port(ldns_resolver *r, uint16_t p);
void ldns_resolver_set_source(ldns_resolver *r, ldns_rdf *s);
void ldns_resolver_set_recursive(ldns_resolver *r, bool b);
void ldns_resolver_set_debug(ldns_resolver *r, bool b);
void ldns_resolver_incr_nameserver_count(ldns_resolver *r);
void ldns_resolver_dec_nameserver_count(ldns_resolver *r);
void ldns_resolver_set_nameserver_count(ldns_resolver *r, size_t c);
void ldns_resolver_set_nameservers(ldns_resolver *r, ldns_rdf **rd);
void ldns_resolver_set_domain(ldns_resolver *r, ldns_rdf *rd);
void ldns_resolver_set_timeout(ldns_resolver *r, struct timeval timeout);
void ldns_resolver_push_searchlist(ldns_resolver *r, ldns_rdf *rd);
void ldns_resolver_set_defnames(ldns_resolver *r, bool b);
void ldns_resolver_set_usevc(ldns_resolver *r, bool b);
void ldns_resolver_set_dnsrch(ldns_resolver *r, bool b);
void ldns_resolver_set_dnssec(ldns_resolver *r, bool b);
void ldns_resolver_set_dnssec_cd(ldns_resolver *r, bool b);
void ldns_resolver_set_dnssec_anchors(ldns_resolver *r, ldns_rr_list * l);
ldns_status ldns_resolver_push_dnssec_anchor(ldns_resolver *r, ldns_rr *rr);
void ldns_resolver_set_retrans(ldns_resolver *r, uint8_t re);
void ldns_resolver_set_fallback(ldns_resolver *r, bool fallback);
void ldns_resolver_set_retry(ldns_resolver *r, uint8_t re);
void ldns_resolver_set_ip6(ldns_resolver *r, uint8_t i);
void ldns_resolver_set_fail(ldns_resolver *r, bool b);
void ldns_resolver_set_igntc(ldns_resolver *r, bool b);
void ldns_resolver_set_edns_udp_size(ldns_resolver *r, uint16_t s);
void ldns_resolver_set_tsig_keyname(ldns_resolver *r, const char *tsig_keyname);
void ldns_resolver_set_tsig_algorithm(ldns_resolver *r, const char *tsig_algorithm);
void ldns_resolver_set_tsig_keydata(ldns_resolver *r, const char *tsig_keydata);
void ldns_resolver_set_rtt(ldns_resolver *r, size_t *rtt);
void ldns_resolver_set_nameserver_rtt(ldns_resolver *r, size_t pos, size_t value);
void ldns_resolver_set_random(ldns_resolver *r, bool b);
ldns_status ldns_resolver_push_nameserver(ldns_resolver *r, const ldns_rdf *n);
ldns_status ldns_resolver_push_nameserver_rr(ldns_resolver *r, const ldns_rr *rr);
ldns_status ldns_resolver_push_nameserver_rr_list(ldns_resolver *r, const ldns_rr_list *rrlist);
ldns_pkt* ldns_resolver_search(const ldns_resolver *r, const ldns_rdf *rdf, ldns_rr_type t, ldns_rr_class c, uint16_t flags);
ldns_status ldns_resolver_search_status(ldns_pkt** pkt, ldns_resolver *r, const ldns_rdf *rdf, ldns_rr_type t, ldns_rr_class c, uint16_t flags);
ldns_status ldns_resolver_prepare_query_pkt(ldns_pkt **q, ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t f);
ldns_status ldns_resolver_send(ldns_pkt **answer, ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t flags);
ldns_status ldns_resolver_send_pkt(ldns_pkt **answer, ldns_resolver *r, ldns_pkt *query_pkt);
ldns_status ldns_resolver_query_status(ldns_pkt** pkt, ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t flags);
ldns_pkt* ldns_resolver_query(const ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t flags);
ldns_resolver* ldns_resolver_new(void);
ldns_resolver* ldns_resolver_clone(ldns_resolver *r);
ldns_status ldns_resolver_new_frm_fp(ldns_resolver **r, FILE *fp);
ldns_status ldns_resolver_new_frm_fp_l(ldns_resolver **r, FILE *fp, int *line_nr);
ldns_status ldns_resolver_new_frm_file(ldns_resolver **r, const char *filename);
void ldns_resolver_free(ldns_resolver *res);
void ldns_resolver_deep_free(ldns_resolver *res);
ldns_rr* ldns_axfr_next(ldns_resolver *resolver);
void ldns_axfr_abort(ldns_resolver *resolver);
bool ldns_axfr_complete(const ldns_resolver *resolver);
ldns_pkt *ldns_axfr_last_pkt(const ldns_resolver *res);
void ldns_resolver_set_ixfr_serial(ldns_resolver *r, uint32_t serial);
uint32_t ldns_resolver_get_ixfr_serial(const ldns_resolver *res);
void ldns_resolver_nameservers_randomize(ldns_resolver *r);
bool ldns_resolver_trusted_key(const ldns_resolver *r, ldns_rr_list * keys, ldns_rr_list * trusted_keys);
#ifdef __cplusplus
}
#endif
#endif /* LDNS_RESOLVER_H */
common.h
Common definitions for LDNS.
error.h
Defines error numbers and functions to translate those to a readable string.
ldns_status
enum ldns_enum_status ldns_status
Definition error.h:148
packet.h
Contains the definition of ldns_pkt and its parts, as well as functions to manipulate those.
rdata.h
Defines ldns_rdf and functions to manipulate those.
ldns_resolver_set_edns_udp_size
void ldns_resolver_set_edns_udp_size(ldns_resolver *r, uint16_t s)
Set maximum udp size.
Definition resolver.c:373
ldns_resolver_set_retrans
void ldns_resolver_set_retrans(ldns_resolver *r, uint8_t re)
Set the resolver retrans timeout (in seconds)
Definition resolver.c:476
ldns_resolver_rtt
size_t * ldns_resolver_rtt(const ldns_resolver *r)
Return the used round trip times for the nameservers.
Definition resolver.c:177
ldns_resolver_push_nameserver_rr_list
ldns_status ldns_resolver_push_nameserver_rr_list(ldns_resolver *r, const ldns_rr_list *rrlist)
Push a new nameserver rr_list to the resolver.
Definition resolver.c:351
ldns_resolver_dnssec_anchors
ldns_rr_list * ldns_resolver_dnssec_anchors(const ldns_resolver *r)
Get the resolver's DNSSEC anchors.
Definition resolver.c:132
ldns_resolver_set_tsig_algorithm
void ldns_resolver_set_tsig_algorithm(ldns_resolver *r, const char *tsig_algorithm)
Set the tsig algorithm.
Definition resolver.c:587
ldns_resolver_set_fail
void ldns_resolver_set_fail(ldns_resolver *r, signed char b)
Whether or not to fail after one failed query.
ldns_resolver_tsig_keydata
const char * ldns_resolver_tsig_keydata(const ldns_resolver *r)
Return the tsig keydata as used by the nameserver.
Definition resolver.c:219
ldns_resolver_set_timeout
void ldns_resolver_set_timeout(ldns_resolver *r, struct timeval timeout)
Set the resolver's socket time out when talking to remote hosts.
Definition resolver.c:551
ldns_resolver_set_retry
void ldns_resolver_set_retry(ldns_resolver *r, uint8_t re)
Set the number of times a resolver should retry a nameserver before the next one is tried.
Definition resolver.c:470
ldns_resolver_prepare_query_pkt
ldns_status ldns_resolver_prepare_query_pkt(ldns_pkt **q, ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t f)
Form a query packet from a resolver and name/type/class combo.
Definition resolver.c:1229
ldns_resolver_set_tsig_keydata
void ldns_resolver_set_tsig_keydata(ldns_resolver *r, const char *tsig_keydata)
Set the tsig key data.
Definition resolver.c:594
ldns_resolver_set_dnssec_anchors
void ldns_resolver_set_dnssec_anchors(ldns_resolver *r, ldns_rr_list *l)
Set the resolver's DNSSEC anchor list directly.
Definition resolver.c:397
ldns_axfr_next
ldns_rr * ldns_axfr_next(ldns_resolver *resolver)
Get the next stream of RRs in a AXFR.
Definition resolver.c:1407
ldns_resolver_dnssec_cd
signed char ldns_resolver_dnssec_cd(const ldns_resolver *r)
Does the resolver set the CD bit.
Definition resolver.c:126
ldns_resolver_fail
signed char ldns_resolver_fail(const ldns_resolver *r)
Does the resolver only try the first nameserver.
Definition resolver.c:84
ldns_resolver_searchlist
ldns_rdf ** ldns_resolver_searchlist(const ldns_resolver *r)
What is the searchlist as used by the resolver.
Definition resolver.c:102
ldns_resolver_set_dnsrch
void ldns_resolver_set_dnsrch(ldns_resolver *r, signed char b)
Whether the resolver uses the searchlist.
ldns_resolver_set_nameserver_rtt
void ldns_resolver_set_nameserver_rtt(ldns_resolver *r, size_t pos, size_t value)
Set round trip time for a specific nameserver.
Definition resolver.c:506
ldns_axfr_complete
signed char ldns_axfr_complete(const ldns_resolver *resolver)
Returns true if the axfr transfer has completed (i.e.
Definition resolver.c:1514
ldns_resolver_new_frm_fp_l
ldns_status ldns_resolver_new_frm_fp_l(ldns_resolver **r, FILE *fp, int *line_nr)
Create a resolver structure from a file like /etc/resolv.conf.
Definition resolver.c:765
ldns_resolver_recursive
signed char ldns_resolver_recursive(const ldns_resolver *r)
Is the resolver set to recurse.
Definition resolver.c:66
ldns_resolver_searchlist_count
size_t ldns_resolver_searchlist_count(const ldns_resolver *r)
Return the resolver's searchlist count.
Definition resolver.c:231
ldns_resolver_tsig_keyname
const char * ldns_resolver_tsig_keyname(const ldns_resolver *r)
Return the tsig keyname as used by the nameserver.
Definition resolver.c:207
ldns_resolver_dnsrch
signed char ldns_resolver_dnsrch(const ldns_resolver *r)
Does the resolver apply search list.
Definition resolver.c:78
ldns_resolver_set_ip6
void ldns_resolver_set_ip6(ldns_resolver *r, uint8_t i)
Whether the resolver uses ip6.
Definition resolver.c:440
ldns_resolver_fallback
signed char ldns_resolver_fallback(const ldns_resolver *r)
Get the truncation fallback status.
Definition resolver.c:54
ldns_resolver_set_fallback
void ldns_resolver_set_fallback(ldns_resolver *r, signed char fallback)
Set whether the resolvers truncation fallback mechanism is used when ldns_resolver_query() is called.
ldns_resolver_nameserver_count
size_t ldns_resolver_nameserver_count(const ldns_resolver *r)
How many nameserver are configured in the resolver.
Definition resolver.c:114
ldns_resolver_free
void ldns_resolver_free(ldns_resolver *res)
Frees the allocated space for this resolver.
Definition resolver.c:998
ldns_resolver_clone
ldns_resolver * ldns_resolver_clone(ldns_resolver *r)
Clone a resolver.
Definition resolver.c:665
ldns_resolver_nameservers
ldns_rdf ** ldns_resolver_nameservers(const ldns_resolver *r)
Return the configured nameserver ip address.
Definition resolver.c:108
ldns_resolver_set_rtt
void ldns_resolver_set_rtt(ldns_resolver *r, size_t *rtt)
Set round trip time for all nameservers.
Definition resolver.c:500
ldns_resolver_dec_nameserver_count
void ldns_resolver_dec_nameserver_count(ldns_resolver *r)
Decrement the resolver's nameserver count.
Definition resolver.c:532
ldns_resolver_query_status
ldns_status ldns_resolver_query_status(ldns_pkt **pkt, ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t flags)
Send a query to a nameserver.
Definition resolver.c:1108
ldns_resolver_set_ixfr_serial
void ldns_resolver_set_ixfr_serial(ldns_resolver *r, uint32_t serial)
Get the serial for requesting IXFR.
Definition resolver.c:1527
ldns_resolver_retrans
uint8_t ldns_resolver_retrans(const ldns_resolver *r)
Get the retransmit interval.
Definition resolver.c:48
ldns_resolver_domain
ldns_rdf * ldns_resolver_domain(const ldns_resolver *r)
What is the default dname to add to relative queries.
Definition resolver.c:96
ldns_resolver_set_port
void ldns_resolver_set_port(ldns_resolver *r, uint16_t p)
Set the port the resolver should use.
Definition resolver.c:238
ldns_resolver_nameserver_rtt
size_t ldns_resolver_nameserver_rtt(const ldns_resolver *r, size_t pos)
Return the used round trip time for a specific nameserver.
Definition resolver.c:183
ldns_resolver_nameservers_randomize
void ldns_resolver_nameservers_randomize(ldns_resolver *r)
Randomize the nameserver list in the resolver.
Definition resolver.c:1541
ldns_resolver_get_ixfr_serial
uint32_t ldns_resolver_get_ixfr_serial(const ldns_resolver *res)
Get the serial for requesting IXFR.
Definition resolver.c:1533
ldns_resolver_new
ldns_resolver * ldns_resolver_new(void)
Create a new resolver structure.
Definition resolver.c:608
ldns_resolver_defnames
signed char ldns_resolver_defnames(const ldns_resolver *r)
Does the resolver apply default domain name.
Definition resolver.c:90
ldns_resolver_edns_udp_size
uint16_t ldns_resolver_edns_udp_size(const ldns_resolver *r)
Get the resolver's udp size.
Definition resolver.c:36
ldns_resolver_set_debug
void ldns_resolver_set_debug(ldns_resolver *r, signed char b)
Set the resolver debugging.
ldns_resolver_set_nameserver_count
void ldns_resolver_set_nameserver_count(ldns_resolver *r, size_t c)
Set the resolver's nameserver count directly.
Definition resolver.c:458
ldns_resolver_search
ldns_pkt * ldns_resolver_search(const ldns_resolver *r, const ldns_rdf *rdf, ldns_rr_type t, ldns_rr_class c, uint16_t flags)
Send the query for using the resolver and take the search list into account The search algorithm is a...
Definition resolver.c:1095
ldns_resolver_trusted_key
signed char ldns_resolver_trusted_key(const ldns_resolver *r, ldns_rr_list *keys, ldns_rr_list *trusted_keys)
Returns true if at least one of the provided keys is a trust anchor.
Definition resolver.c:138
ldns_resolver_dnssec
signed char ldns_resolver_dnssec(const ldns_resolver *r)
Does the resolver do DNSSEC.
Definition resolver.c:120
ldns_resolver_timeout
struct timeval ldns_resolver_timeout(const ldns_resolver *r)
What is the timeout on socket connections.
Definition resolver.c:201
ldns_resolver_push_nameserver
ldns_status ldns_resolver_push_nameserver(ldns_resolver *r, const ldns_rdf *n)
Push a new nameserver to the resolver.
Definition resolver.c:288
ldns_axfr_last_pkt
ldns_pkt * ldns_axfr_last_pkt(const ldns_resolver *res)
Returns a pointer to the last ldns_pkt that was sent by the server in the AXFR transfer usable for in...
Definition resolver.c:1521
ldns_resolver_ip6
uint8_t ldns_resolver_ip6(const ldns_resolver *r)
Does the resolver use ip6 or ip4.
Definition resolver.c:60
ldns_resolver_random
signed char ldns_resolver_random(const ldns_resolver *r)
Does the resolver randomize the nameserver before usage.
Definition resolver.c:225
ldns_resolver_set_nameservers
void ldns_resolver_set_nameservers(ldns_resolver *r, ldns_rdf **rd)
Set the resolver's nameserver count directly by using an rdf list.
Definition resolver.c:488
ldns_resolver_push_dnssec_anchor
ldns_status ldns_resolver_push_dnssec_anchor(ldns_resolver *r, ldns_rr *rr)
Push a new trust anchor to the resolver.
Definition resolver.c:403
ldns_resolver_set_source
void ldns_resolver_set_source(ldns_resolver *r, ldns_rdf *s)
Set the source rdf (address) the resolver should use.
Definition resolver.c:244
ldns_resolver_retry
uint8_t ldns_resolver_retry(const ldns_resolver *r)
Get the number of retries.
Definition resolver.c:42
ldns_resolver_source
ldns_rdf * ldns_resolver_source(const ldns_resolver *r)
Get the source address the resolver should use.
Definition resolver.c:30
ldns_axfr_abort
void ldns_axfr_abort(ldns_resolver *resolver)
Abort a transfer that is in progress.
Definition resolver.c:1499
ldns_resolver_set_defnames
void ldns_resolver_set_defnames(ldns_resolver *r, signed char b)
Whether the resolver uses the name set with _set_domain.
ldns_resolver_push_nameserver_rr
ldns_status ldns_resolver_push_nameserver_rr(ldns_resolver *r, const ldns_rr *rr)
Push a new nameserver to the resolver.
Definition resolver.c:335
ldns_resolver_incr_nameserver_count
void ldns_resolver_incr_nameserver_count(ldns_resolver *r)
Incremental the resolver's nameserver count.
Definition resolver.c:523
ldns_resolver_set_domain
void ldns_resolver_set_domain(ldns_resolver *r, ldns_rdf *rd)
Set the resolver's default domain.
Definition resolver.c:545
ldns_resolver_pop_nameserver
ldns_rdf * ldns_resolver_pop_nameserver(ldns_resolver *r)
pop the last nameserver from the resolver.
Definition resolver.c:250
ldns_resolver_search_status
ldns_status ldns_resolver_search_status(ldns_pkt **pkt, ldns_resolver *r, const ldns_rdf *rdf, ldns_rr_type t, ldns_rr_class c, uint16_t flags)
Send the query for using the resolver and take the search list into account The search algorithm is a...
Definition resolver.c:1051
ldns_resolver_set_usevc
void ldns_resolver_set_usevc(ldns_resolver *r, signed char b)
Whether the resolver uses a virtual circuit (TCP)
ldns_resolver_usevc
signed char ldns_resolver_usevc(const ldns_resolver *r)
Does the resolver use tcp or udp.
Definition resolver.c:171
ldns_resolver_set_tsig_keyname
void ldns_resolver_set_tsig_keyname(ldns_resolver *r, const char *tsig_keyname)
Set the tsig key name.
Definition resolver.c:580
ldns_resolver_set_dnssec
void ldns_resolver_set_dnssec(ldns_resolver *r, signed char b)
Whether the resolver uses DNSSEC.
ldns_resolver_igntc
signed char ldns_resolver_igntc(const ldns_resolver *r)
Does the resolver ignore the TC bit (truncated)
Definition resolver.c:165
ldns_resolver_set_random
void ldns_resolver_set_random(ldns_resolver *r, signed char b)
Should the nameserver list be randomized before each use.
ldns_resolver_tsig_algorithm
const char * ldns_resolver_tsig_algorithm(const ldns_resolver *r)
Return the tsig algorithm as used by the nameserver.
Definition resolver.c:213
ldns_resolver_port
uint16_t ldns_resolver_port(const ldns_resolver *r)
Get the port the resolver should use.
Definition resolver.c:24
ldns_resolver_debug
signed char ldns_resolver_debug(const ldns_resolver *r)
Get the debug status of the resolver.
Definition resolver.c:72
ldns_resolver_push_searchlist
void ldns_resolver_push_searchlist(ldns_resolver *r, ldns_rdf *rd)
Push a new rd to the resolver's searchlist.
Definition resolver.c:558
ldns_resolver_set_recursive
void ldns_resolver_set_recursive(ldns_resolver *r, signed char b)
Set the resolver recursion.
ldns_resolver_set_igntc
void ldns_resolver_set_igntc(ldns_resolver *r, signed char b)
Whether or not to ignore the TC bit.
ldns_resolver_new_frm_fp
ldns_status ldns_resolver_new_frm_fp(ldns_resolver **r, FILE *fp)
Create a resolver structure from a file like /etc/resolv.conf.
Definition resolver.c:759
ldns_resolver_send_pkt
ldns_status ldns_resolver_send_pkt(ldns_pkt **answer, ldns_resolver *r, ldns_pkt *query_pkt)
Send the given packet to a nameserver.
Definition resolver.c:1171
ldns_resolver_send
ldns_status ldns_resolver_send(ldns_pkt **answer, ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t flags)
Send the query for name as-is.
Definition resolver.c:1340
ldns_resolver_query
ldns_pkt * ldns_resolver_query(const ldns_resolver *r, const ldns_rdf *name, ldns_rr_type t, ldns_rr_class c, uint16_t flags)
Send a query to a nameserver.
Definition resolver.c:1129
ldns_resolver_set_dnssec_cd
void ldns_resolver_set_dnssec_cd(ldns_resolver *r, signed char b)
Whether the resolver uses the checking disable bit.
ldns_resolver_deep_free
void ldns_resolver_deep_free(ldns_resolver *res)
Frees the allocated space for this resolver and all it's data.
Definition resolver.c:1004
ldns_resolver_new_frm_file
ldns_status ldns_resolver_new_frm_file(ldns_resolver **r, const char *filename)
Configure a resolver by means of a resolv.conf file The file may be NULL in which case there will be ...
Definition resolver.c:967
rr.h
Contains the definition of ldns_rr and functions to manipulate those.
ldns_rr_type
enum ldns_enum_rr_type ldns_rr_type
Definition rr.h:251
ldns_rr_class
enum ldns_enum_rr_class ldns_rr_class
Definition rr.h:61
ldns_struct_pkt
DNS packet.
Definition packet.h:235
ldns_struct_rdf
Resource record data field.
Definition rdata.h:197
ldns_struct_resolver
DNS stub resolver structure.
Definition resolver.h:60
ldns_struct_resolver::_cur_axfr_pkt
ldns_pkt * _cur_axfr_pkt
Packet currently handled when doing part of an AXFR.
Definition resolver.h:126
ldns_struct_resolver::_socket
int _socket
Keep some things to make AXFR possible.
Definition resolver.h:117
ldns_struct_resolver::_axfr_i
uint16_t _axfr_i
Counter for within the AXFR packets.
Definition resolver.h:128
ldns_struct_resolver::_tsig_keyname
char * _tsig_keyname
Name of the key to use with TSIG, if _tsig_keyname and _tsig_keydata both contain values,...
Definition resolver.h:138
ldns_struct_resolver::_retrans
uint8_t _retrans
Time to wait before retrying.
Definition resolver.h:90
ldns_struct_resolver::_fallback
signed char _fallback
Use new fallback mechanism (try EDNS, then do TCP)
Definition resolver.h:92
ldns_struct_resolver::_source
ldns_rdf * _source
Source address to query from.
Definition resolver.h:145
ldns_struct_resolver::_dnssec
signed char _dnssec
Whether to do DNSSEC.
Definition resolver.h:95
ldns_struct_resolver::_edns_udp_size
uint16_t _edns_udp_size
Definition resolver.h:130
ldns_struct_resolver::_recursive
signed char _recursive
Whether or not to be recursive.
Definition resolver.h:73
ldns_struct_resolver::_dnsrch
signed char _dnsrch
If true apply the search list.
Definition resolver.h:109
ldns_struct_resolver::_usevc
signed char _usevc
Whether to use tcp or udp (tcp if the value is true)
Definition resolver.h:101
ldns_struct_resolver::_defnames
signed char _defnames
If true append the default domain.
Definition resolver.h:107
ldns_struct_resolver::_dnssec_anchors
ldns_rr_list * _dnssec_anchors
Optional trust anchors for complete DNSSEC validation.
Definition resolver.h:99
ldns_struct_resolver::_nameserver_count
size_t _nameserver_count
Number of nameservers in _nameservers.
Definition resolver.h:67
ldns_struct_resolver::_searchlist
ldns_rdf ** _searchlist
Searchlist array, add the names in this array if a query cannot be found.
Definition resolver.h:82
ldns_struct_resolver::_igntc
signed char _igntc
Whether to ignore the tc bit.
Definition resolver.h:103
ldns_struct_resolver::_ip6
uint8_t _ip6
Whether to use ip6: 0->does not matter, 1 is IPv4, 2 is IPv6.
Definition resolver.h:105
ldns_struct_resolver::_nameservers
ldns_rdf ** _nameservers
Array of nameservers to query (IP addresses or dnames)
Definition resolver.h:65
ldns_struct_resolver::_tsig_keydata
char * _tsig_keydata
Secret key data to use with TSIG, if _tsig_keyname and _tsig_keydata both contain values,...
Definition resolver.h:140
ldns_struct_resolver::_rtt
size_t * _rtt
Round trip time; 0 -> infinity.
Definition resolver.h:70
ldns_struct_resolver::_fail
signed char _fail
Only try the first nameserver, and return with an error directly if it fails.
Definition resolver.h:113
ldns_struct_resolver::_serial
uint32_t _serial
Definition resolver.h:132
ldns_struct_resolver::_tsig_algorithm
char * _tsig_algorithm
TSIG signing algorithm.
Definition resolver.h:142
ldns_struct_resolver::_axfr_soa_count
int _axfr_soa_count
Count the number of LDNS_RR_TYPE_SOA RRs we have seen so far (the second one signifies the end of the...
Definition resolver.h:121
ldns_struct_resolver::_dnssec_cd
signed char _dnssec_cd
Whether to set the CD bit on DNSSEC requests.
Definition resolver.h:97
ldns_struct_resolver::_searchlist_count
size_t _searchlist_count
Number of entries in the searchlist array.
Definition resolver.h:85
ldns_struct_resolver::_timeout
struct timeval _timeout
Timeout for socket connections.
Definition resolver.h:111
ldns_struct_resolver::_debug
signed char _debug
Print debug information.
Definition resolver.h:76
ldns_struct_resolver::_random
signed char _random
Randomly choose a nameserver.
Definition resolver.h:115
ldns_struct_resolver::_retry
uint8_t _retry
Number of times to retry before giving up.
Definition resolver.h:88
ldns_struct_resolver::_domain
ldns_rdf * _domain
Default domain to add to non fully qualified domain names.
Definition resolver.h:79
ldns_struct_resolver::_port
uint16_t _port
Port to send queries to.
Definition resolver.h:62
ldns_struct_rr_list
List or Set of Resource Records.
Definition rr.h:346
ldns_struct_rr
Resource Record.
Definition rr.h:318
tsig.h
Defines functions for TSIG usage.