/usr/include/dnsdb/zdb_rr_label.h is in libyadifa-dev 2.1.6-1.
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*
* Copyright (c) 2011-2016, EURid. All rights reserved.
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/** @defgroup records_labels Internal functions for the database: zoned resource records label.
* @ingroup dnsdb
* @brief Internal functions for the database: zoned resource records label.
*
* Internal functions for the database: zoned resource records label.
*
* @{
*/
#ifndef _RR_LABEL_H
#define _RR_LABEL_H
#include <dnsdb/zdb_record.h>
#ifdef __cplusplus
extern "C" {
#endif
#define ZDB_RR_LABEL_DELETE_NODE COLLECTION_PROCESS_DELETENODE /* = 2 matches the dictionary delete node */
#define ZDB_RR_LABEL_DELETE_TREE 3 /* */
#define ZDB_RRLABEL_TAG 0x4c424c525242445a /** "ZDBRRLBL" */
/**
* Instanciate a new rr_label.
*/
zdb_rr_label* zdb_rr_label_new_instance(const u8* label_name);
/**
* @brief Finds the resource record label matching a path of labels starting from another rr label
*
* Finds the resource record label matching a path of labels starting from another rr label
* Typically the starting label is a zone cut.
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[in] path_index the index of the top of the stack
*
* @return the matching label or NULL if it has not been found
*/
/* 3 USES */
zdb_rr_label* zdb_rr_label_find_exact(zdb_rr_label* apex,dnslabel_vector_reference path,s32 path_index);
/**
* @brief Finds the resource record label matching a path of labels starting from another rr label or the wildcard label
*
* Finds the resource record label matching a path of labels starting from another rr label or the wildcard label
* Typically the starting label is a zone cut.
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[in] path_index the index of the top of the stack
*
* @return the matching label, the * label or NULL if none of them has not been found
*/
/* NOT USED (YET) */
zdb_rr_label* zdb_rr_label_find(zdb_rr_label* apex, dnslabel_vector_reference sections, s32 index);
zdb_rr_label* zdb_rr_label_find_from_name(zdb_rr_label* apex, const u8 *fqdn);
zdb_rr_label*
zdb_rr_label_stack_find(zdb_rr_label* apex, dnslabel_stack_reference sections, s32 pos, s32 index);
zdb_rr_label* zdb_rr_label_find_child(zdb_rr_label* parent, const u8* dns_label);
/**
* @brief Finds the closest resource record label matching a path of labels starting from another rr label
*
* Finds the resource record label matching a path of labels starting from another rr label
* Typically the starting label is a zone cut.
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[inout] path_index the index of the top of the stack, set the index of the label in the stack at return
*
* @return the matching label or the apex if none has been found
*/
/* 3 USES */
zdb_rr_label* zdb_rr_label_find_closest(zdb_rr_label* apex, dnslabel_vector_reference path, s32* closest_level);
zdb_rr_label* zdb_rr_label_find_closest_authority(zdb_rr_label* apex, dnslabel_vector_reference path, s32* closest_level);
struct zdb_rr_label_find_ext_data
{
zdb_rr_label *authority;
zdb_rr_label *closest;
zdb_rr_label *answer;
s32 authority_index;
s32 closest_index;
};
typedef struct zdb_rr_label_find_ext_data zdb_rr_label_find_ext_data;
zdb_rr_label* zdb_rr_label_find_ext(zdb_rr_label* apex, dnslabel_vector_reference sections, s32 index_, zdb_rr_label_find_ext_data *ext);
/**
* @brief Returns the authority fqdn
*
* Returns the pointer to the authority fqdn located inside the qname (based on the rr_label_info)
*
* @param qname
* @param rr_label_info
* @return
*/
static inline const u8 *
zdb_rr_label_info_get_authority_qname(const u8 *qname, const zdb_rr_label_find_ext_data *rr_label_info)
{
const u8 * authority_qname = qname;
s32 i = rr_label_info->authority_index;
while(i > 0)
{
authority_qname += authority_qname[0] + 1;
i--;
}
return authority_qname;
}
/**
* @brief Adds the resource record label matching a path of labels starting from another rr label
*
* Adds the resource record label matching a path of labels starting from another rr label
* Typically the starting label is a zone cut.
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[in] path_index the index of the top of the stack
*
* @return the matching label or NULL if it has not been found
*/
/* 1 USE */
zdb_rr_label* zdb_rr_label_add(zdb_zone* zone, dnslabel_vector_reference sections, s32 index);
/**
* @brief Deletes the resource record of the given type on the label matching a path of labels starting from another rr label
*
* Deletes the resource record of the given type on the label matching a path of labels starting from another rr label
* Typically the starting label is a zone cut.
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[in] path_index the index of the top of the stack
*
* @return the matching label or NULL if it has not been found
*/
/* 2 USES */
ya_result zdb_rr_label_delete_record(zdb_zone* zone, dnslabel_vector_reference path, s32 path_index, u16 type);
/**
* @brief Deletes the resource record of the given type, ttl and rdata on the label matching a path of labels starting from another rr label
*
* Deletes the resource record of the given type, ttl and rdata on the label matching a path of labels starting from another rr label
* Typically the starting label is a zone cut.
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[in] path_index the index of the top of the stack
*
* @return the matching label or NULL if it has not been found
*/
/* 1 USE */
ya_result zdb_rr_label_delete_record_exact(zdb_zone* zone,dnslabel_vector_reference path,s32 path_index,u16 type,zdb_ttlrdata* ttlrdata);
/**
* @brief Deletes an EMPTY label
*
* Deletes an EMPTY label an all it's EMPTY parents
* Parents bound to an NSEC structures are not removed
*
* @param[in] apex the starting label
* @param[in] path a stack of labels
* @param[in] path_index the index of the top of the stack
*
* @return the matching label or NULL if it has not been found
*/
static inline zdb_packed_ttlrdata* zdb_rr_label_get_rrset(zdb_rr_label *rr_label, u16 type)
{
zdb_packed_ttlrdata* rrset = zdb_record_find(&rr_label->resource_record_set, type);
return rrset;
}
/**
* @brief Destroys a zone label and its contents
*
* Destroys a zone label and its contents
*
* @param[in] zone_labep a pointer to a pointer to the label to destroy
*
*/
/* 1 USE */
void zdb_rr_label_destroy(zdb_zone* zone, zdb_rr_label** rr_labelp);
void zdb_rr_label_truncate(zdb_zone* zone, zdb_rr_label* rr_labelp);
static inline bool zdb_rr_label_is_glue(zdb_rr_label* label)
{
return (label->flags & (ZDB_RR_LABEL_UNDERDELEGATION | ZDB_RR_LABEL_DELEGATION)) == ZDB_RR_LABEL_UNDERDELEGATION;
}
#if ZDB_HAS_DNSSEC_SUPPORT != 0
/* 2 USES */
#define RR_LABEL_RELEVANT(rr_label_) ((dictionary_notempty(&(rr_label_)->sub))||(btree_notempty((rr_label_)->resource_record_set))||(rr_label_->nsec.dnssec != NULL))
/* label is only alive because of NSEC3 */
#define RR_LABEL_HASSUB(rr_label_) (dictionary_notempty(&(rr_label_)->sub))
#define RR_LABEL_HASSUBORREC(rr_label_)((dictionary_notempty(&(rr_label_)->sub))||(btree_notempty((rr_label_)->resource_record_set)))
#define RR_LABEL_NOSUBNORREC(rr_label_)((dictionary_notempty(&(rr_label_)->sub))&&(btree_notempty((rr_label_)->resource_record_set)))
/* 9 USES */
#define RR_LABEL_IRRELEVANT(rr_label_) ((dictionary_isempty(&(rr_label_)->sub))&&(btree_isempty((rr_label_)->resource_record_set))&&(rr_label_->nsec.dnssec == NULL))
#else
/* 2 USES */
#define RR_LABEL_RELEVANT(rr_label_) (dictionary_notempty(&(rr_label_)->sub)||btree_notempty(&(rr_label_)->resource_record_set))
/* 9 USES */
#define RR_LABEL_IRRELEVANT(rr_label_) (dictionary_isempty(&(rr_label_)->sub)&&btree_isempty(&(rr_label_)->resource_record_set))
#endif
/* 0 USES */
static inline bool zdb_rr_label_has_records(zdb_rr_label *rr_label)
{
bool ret = btree_notempty(rr_label->resource_record_set);
return ret;
}
#ifdef DEBUG
void zdb_rr_label_print_indented(zdb_rr_label* rr_label, output_stream *os, int indent);
void zdb_rr_label_print(zdb_rr_label* zone_label, output_stream *os);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _rr_LABEL_H */
/** @} */
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