diff options
Diffstat (limited to 'services/localzone.h')
| -rw-r--r-- | services/localzone.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/services/localzone.h b/services/localzone.h index bf9c9bf489cb..658f28024ef4 100644 --- a/services/localzone.h +++ b/services/localzone.h @@ -46,6 +46,7 @@ #include "util/storage/dnstree.h" #include "util/module.h" #include "services/view.h" +struct packed_rrset_data; struct ub_packed_rrset_key; struct regional; struct config_file; @@ -389,4 +390,111 @@ void local_zones_del_data(struct local_zones* zones, */ int parse_dname(const char* str, uint8_t** res, size_t* len, int* labs); +/** + * Find local data tag string match for the given type (in qinfo) in the list. + * If found, 'r' will be filled with corresponding rrset information. + * @param qinfo: contains name, type, and class for the data + * @param list: stores local tag data to be searched + * @param r: rrset key to be filled for matched data + * @param temp: region to allocate rrset in 'r' + * @return 1 if a match is found and rrset is built; otherwise 0 including + * errors. + */ +int local_data_find_tag_datas(const struct query_info* qinfo, + struct config_strlist* list, struct ub_packed_rrset_key* r, + struct regional* temp); + +/** + * See if two sets of tag lists (in the form of bitmap) have the same tag that + * has an action. If so, '*tag' will be set to the found tag index, and the + * corresponding action will be returned in the form of local zone type. + * Otherwise the passed type (lzt) will be returned as the default action. + * Pointers except tagactions must not be NULL. + * @param taglist: 1st list of tags + * @param taglen: size of taglist in bytes + * @param taglist2: 2nd list of tags + * @param taglen2: size of taglist2 in bytes + * @param tagactions: local data actions for tags. May be NULL. + * @param tagactionssize: length of the tagactions. + * @param lzt: default action (local zone type) if no tag action is found. + * @param tag: see above. + * @param tagname: array of tag name strings (for debug output). + * @param num_tags: number of items in tagname array. + * @return found tag action or the default action. + */ +enum localzone_type local_data_find_tag_action(const uint8_t* taglist, + size_t taglen, const uint8_t* taglist2, size_t taglen2, + const uint8_t* tagactions, size_t tagactionssize, + enum localzone_type lzt, int* tag, char* const* tagname, int num_tags); + +/** + * Parses resource record string into wire format, also returning its field values. + * @param str: input resource record + * @param nm: domain name field + * @param type: record type field + * @param dclass: record class field + * @param ttl: ttl field + * @param rr: buffer for the parsed rr in wire format + * @param len: buffer length + * @param rdata: rdata field + * @param rdata_len: rdata field length + * @return 1 on success; 0 otherwise. + */ +int rrstr_get_rr_content(const char* str, uint8_t** nm, uint16_t* type, + uint16_t* dclass, time_t* ttl, uint8_t* rr, size_t len, + uint8_t** rdata, size_t* rdata_len); + +/** + * Insert specified rdata into the specified resource record. + * @param region: allocator + * @param pd: data portion of the destination resource record + * @param rdata: source rdata + * @param rdata_len: source rdata length + * @param ttl: time to live + * @param rrstr: resource record in text form (for logging) + * @return 1 on success; 0 otherwise. + */ +int rrset_insert_rr(struct regional* region, struct packed_rrset_data* pd, + uint8_t* rdata, size_t rdata_len, time_t ttl, const char* rrstr); + +/** + * Valid response ip actions for the IP-response-driven-action feature; + * defined here instead of in the respip module to enable sharing of enum + * values with the localzone_type enum. + * Note that these values except 'none' are the same as localzone types of + * the 'same semantics'. It's intentional as we use these values via + * access-control-tags, which can be shared for both response ip actions and + * local zones. + */ +enum respip_action { + /** no respip action */ + respip_none = local_zone_unset, + /** don't answer */ + respip_deny = local_zone_deny, + /** redirect as per provided data */ + respip_redirect = local_zone_redirect, + /** log query source and answer query */ + respip_inform = local_zone_inform, + /** log query source and don't answer query */ + respip_inform_deny = local_zone_inform_deny, + /** resolve normally, even when there is response-ip data */ + respip_always_transparent = local_zone_always_transparent, + /** answer with 'refused' response */ + respip_always_refuse = local_zone_always_refuse, + /** answer with 'no such domain' response */ + respip_always_nxdomain = local_zone_always_nxdomain, + + /* The rest of the values are only possible as + * access-control-tag-action */ + + /** serves response data (if any), else, drops queries. */ + respip_refuse = local_zone_refuse, + /** serves response data, else, nodata answer. */ + respip_static = local_zone_static, + /** gives response data (if any), else nodata answer. */ + respip_transparent = local_zone_transparent, + /** gives response data (if any), else nodata answer. */ + respip_typetransparent = local_zone_typetransparent, +}; + #endif /* SERVICES_LOCALZONE_H */ |