tsig.c File Reference

#include "config.h"
#include "compat.h"
#include "duration.h"
#include "file.h"
#include "log.h"
#include "status.h"
#include "util.h"
#include "wire/buffer.h"
#include "wire/tsig.h"
#include "wire/tsig-openssl.h"
#include <arpa/inet.h>

Go to the source code of this file.

Data Structures
struct	tsig_key_table_struct
struct	tsig_algo_table_struct

Macros
#define	TSIG_SIGNED_TIME_FUDGE   300

Typedefs
typedef struct tsig_key_table_struct	tsig_key_table_type
typedef struct tsig_algo_table_struct	tsig_algo_table_type

Functions
void	tsig_handler_add_key (tsig_key_type *key)
void	tsig_handler_add_algo (tsig_algo_type *algo)
ods_status	tsig_handler_init ()
void	tsig_handler_cleanup (void)
tsig_type *	tsig_create (char *name, char *algo, char *secret)
tsig_type *	tsig_lookup_by_name (tsig_type *tsig, const char *name)
tsig_algo_type *	tsig_lookup_algo (const char *name)
tsig_rr_type *	tsig_rr_create ()
void	tsig_rr_reset (tsig_rr_type *trr, tsig_algo_type *algo, tsig_key_type *key)
int	tsig_rr_parse (tsig_rr_type *trr, buffer_type *buffer)
int	tsig_rr_find (tsig_rr_type *trr, buffer_type *buffer)
int	tsig_rr_lookup (tsig_rr_type *trr)
void	tsig_rr_prepare (tsig_rr_type *trr)
void	tsig_rr_update (tsig_rr_type *trr, buffer_type *buffer, size_t length)
void	tsig_rr_sign (tsig_rr_type *trr)
int	tsig_rr_verify (tsig_rr_type *trr)
void	tsig_rr_append (tsig_rr_type *trr, buffer_type *buffer)
size_t	tsig_rr_reserved_space (tsig_rr_type *trr)
void	tsig_rr_error (tsig_rr_type *trr)
const char *	tsig_status2str (tsig_status status)
const char *	tsig_strerror (uint16_t error)
void	tsig_rr_free (tsig_rr_type *trr)
void	tsig_rr_cleanup (tsig_rr_type *trr)
void	tsig_cleanup (tsig_type *tsig)

Macro Definition Documentation

TSIG_SIGNED_TIME_FUDGE

#define TSIG_SIGNED_TIME_FUDGE   300

TSIG.

Definition at line 47 of file tsig.c.

Referenced by tsig_rr_sign().

Typedef Documentation

tsig_algo_table_type

typedef struct tsig_algo_table_struct tsig_algo_table_type

algorithm table

Definition at line 58 of file tsig.c.

tsig_key_table_type

typedef struct tsig_key_table_struct tsig_key_table_type

key table

Definition at line 51 of file tsig.c.

Function Documentation

tsig_cleanup()

void tsig_cleanup

(

tsig_type *

tsig

)

Clean up TSIG.

Definition at line 847 of file tsig.c.

References tsig_struct::algorithm, tsig_struct::name, tsig_struct::next, tsig_struct::secret, and tsig_cleanup().

Referenced by dnsin_cleanup(), dnsout_cleanup(), and tsig_cleanup().

tsig_create()

tsig_type* tsig_create	(	char *	name,
		char *	algo,
		char *	secret
	)

Create new TSIG.

Definition at line 208 of file tsig.c.

References tsig_struct::algorithm, tsig_struct::key, tsig_struct::name, tsig_struct::next, and tsig_struct::secret.

tsig_handler_add_algo()

void tsig_handler_add_algo

(

tsig_algo_type *

algo

)

Add algorithm to TSIG handler.

Definition at line 93 of file tsig.c.

References tsig_algo_table_struct::algorithm, and tsig_algo_table_struct::next.

tsig_handler_add_key()

void tsig_handler_add_key

(

tsig_key_type *

key

)

Add key to TSIG handler.

Definition at line 73 of file tsig.c.

References tsig_key_table_struct::key, and tsig_key_table_struct::next.

tsig_handler_cleanup()

void tsig_handler_cleanup

(

void

)

Clean up TSIG handler.

Definition at line 135 of file tsig.c.

tsig_handler_init()

ods_status tsig_handler_init

(

void

)

Initialize TSIG handler.

Definition at line 116 of file tsig.c.

tsig_lookup_algo()

tsig_algo_type* tsig_lookup_algo

(

const char *

name

)

Lookup TSIG algorithm by name.

Definition at line 257 of file tsig.c.

References tsig_algo_table_struct::algorithm, tsig_algo_table_struct::next, and tsig_algo_struct::txt_name.

tsig_lookup_by_name()

tsig_type* tsig_lookup_by_name	(	tsig_type *	tsig,
		const char *	name
	)

Lookup TSIG by key name.

Definition at line 235 of file tsig.c.

References tsig_struct::name, and tsig_struct::next.

Referenced by acl_create().

tsig_rr_append()

void tsig_rr_append	(	tsig_rr_type *	trr,
		buffer_type *	buffer
	)

Append TSIG RR.

Definition at line 672 of file tsig.c.

References tsig_rr_struct::algo_name, buffer_position(), buffer_skip(), buffer_write(), buffer_write_rdf(), buffer_write_u16(), buffer_write_u16_at(), buffer_write_u32(), buffer_write_u8(), tsig_rr_struct::error_code, tsig_rr_struct::key_name, tsig_rr_struct::mac_data, tsig_rr_struct::mac_size, tsig_rr_struct::original_query_id, tsig_rr_struct::other_data, tsig_rr_struct::other_size, tsig_rr_struct::signed_time_fudge, tsig_rr_struct::signed_time_high, and tsig_rr_struct::signed_time_low.

Referenced by query_add_optional().

tsig_rr_cleanup()

void tsig_rr_cleanup

(

tsig_rr_type *

trr

)

Cleanup TSIG RR.

Definition at line 832 of file tsig.c.

References tsig_rr_free().

Referenced by notify_cleanup(), and query_cleanup().

tsig_rr_create()

tsig_rr_type* tsig_rr_create

(

void

)

Create new TSIG RR.

Definition at line 274 of file tsig.c.

References tsig_rr_struct::algo_name, tsig_rr_struct::key_name, tsig_rr_struct::mac_data, tsig_rr_struct::other_data, and tsig_rr_reset().

Referenced by query_create(), and xfrd_create().

tsig_rr_error()

void tsig_rr_error

(

tsig_rr_type *

trr

)

Reply with error TSIG RR.

Definition at line 742 of file tsig.c.

References tsig_rr_struct::mac_data, and tsig_rr_struct::mac_size.

Referenced by query_add_optional().

tsig_rr_find()

int tsig_rr_find	(	tsig_rr_type *	trr,
		buffer_type *	buffer
	)

Find TSIG RR.

Definition at line 435 of file tsig.c.

References buffer_pkt_ancount(), buffer_pkt_arcount(), BUFFER_PKT_HEADER_SIZE, buffer_pkt_nscount(), buffer_pkt_qdcount(), buffer_position(), buffer_set_position(), buffer_skip_rr(), tsig_rr_struct::status, TSIG_NOT_PRESENT, and tsig_rr_parse().

tsig_rr_free()

void tsig_rr_free

(

tsig_rr_type *

trr

)

Free TSIG RR.

Definition at line 811 of file tsig.c.

References tsig_rr_struct::algo_name, tsig_rr_struct::key_name, tsig_rr_struct::mac_data, and tsig_rr_struct::other_data.

Referenced by tsig_rr_cleanup(), and tsig_rr_reset().

tsig_rr_lookup()

int tsig_rr_lookup

(

tsig_rr_type *

trr

)

Lookup TSIG RR.

Definition at line 469 of file tsig.c.

References tsig_rr_struct::algo, tsig_rr_struct::algo_name, tsig_algo_table_struct::algorithm, tsig_key_struct::dname, tsig_key_table_struct::key, tsig_rr_struct::key, tsig_rr_struct::key_name, tsig_key_table_struct::next, tsig_algo_table_struct::next, tsig_rr_struct::status, TSIG_OK, and tsig_algo_struct::wf_name.

tsig_rr_parse()

int tsig_rr_parse	(	tsig_rr_type *	trr,
		buffer_type *	buffer
	)

Parse TSIG RR.

Definition at line 322 of file tsig.c.

References buffer_position(), buffer_set_position(), buffer_skip_dname(), tsig_rr_struct::position, tsig_rr_struct::status, and TSIG_NOT_PRESENT.

Referenced by tsig_rr_find().

tsig_rr_prepare()

void tsig_rr_prepare

(

tsig_rr_type *

trr

)

Prepare TSIG RR.

Definition at line 537 of file tsig.c.

References tsig_rr_struct::algo, tsig_rr_struct::context, tsig_algo_struct::hmac_create, tsig_algo_struct::hmac_init, tsig_algo_struct::hmac_update, tsig_rr_struct::key, tsig_algo_struct::max_digest_size, tsig_rr_struct::prior_mac_data, tsig_rr_struct::prior_mac_size, and tsig_rr_struct::update_since_last_prepare.

Referenced by query_add_optional().

tsig_rr_reserved_space()

size_t tsig_rr_reserved_space

(

tsig_rr_type *

trr

)

Definition at line 713 of file tsig.c.

References tsig_rr_struct::algo_name, tsig_rr_struct::key_name, tsig_rr_struct::status, and TSIG_NOT_PRESENT.

Referenced by query_prepare().

tsig_rr_reset()

void tsig_rr_reset	(	tsig_rr_type *	trr,
		tsig_algo_type *	algo,
		tsig_key_type *	key
	)

Reset TSIG RR.

Definition at line 292 of file tsig.c.

References tsig_rr_struct::algo, tsig_rr_struct::context, tsig_rr_struct::error_code, tsig_key_table_struct::key, tsig_rr_struct::key, tsig_rr_struct::mac_size, tsig_rr_struct::original_query_id, tsig_rr_struct::other_size, tsig_rr_struct::position, tsig_rr_struct::prior_mac_data, tsig_rr_struct::prior_mac_size, tsig_rr_struct::response_count, tsig_rr_struct::signed_time_fudge, tsig_rr_struct::signed_time_high, tsig_rr_struct::signed_time_low, tsig_rr_struct::status, TSIG_NOT_PRESENT, tsig_rr_free(), and tsig_rr_struct::update_since_last_prepare.

Referenced by query_reset(), and tsig_rr_create().

tsig_rr_sign()

void tsig_rr_sign

(

tsig_rr_type *

trr

)

Sign TSIG RR.

Definition at line 629 of file tsig.c.

References tsig_rr_struct::context, tsig_rr_struct::signed_time_fudge, tsig_rr_struct::signed_time_high, tsig_rr_struct::signed_time_low, and TSIG_SIGNED_TIME_FUDGE.

Referenced by query_add_optional().

tsig_rr_update()

void tsig_rr_update	(	tsig_rr_type *	trr,
		buffer_type *	buffer,
		size_t	length
	)

Update TSIG RR.

Definition at line 559 of file tsig.c.

References tsig_rr_struct::algo, buffer_at(), buffer_limit(), buffer_pkt_qr(), tsig_rr_struct::context, tsig_algo_struct::hmac_update, tsig_rr_struct::original_query_id, tsig_rr_struct::response_count, and tsig_rr_struct::update_since_last_prepare.

Referenced by query_add_optional().

tsig_rr_verify()

int tsig_rr_verify

(

tsig_rr_type *

trr

)

Verify TSIG RR.

Definition at line 650 of file tsig.c.

References tsig_rr_struct::algo.

tsig_status2str()

const char* tsig_status2str

(

tsig_status

status

)

Print TSIG status.

Definition at line 759 of file tsig.c.

References TSIG_ERROR, TSIG_NOT_PRESENT, and TSIG_OK.

tsig_strerror()

const char* tsig_strerror

(

uint16_t

error

)

Get human readable TSIG error code.

Definition at line 778 of file tsig.c.

References TSIG_ERROR_BADKEY, TSIG_ERROR_BADSIG, and TSIG_ERROR_BADTIME.