diff options
Diffstat (limited to '')
| -rw-r--r-- | external/unbound/util/data/msgreply.h | 242 |
1 files changed, 238 insertions, 4 deletions
diff --git a/external/unbound/util/data/msgreply.h b/external/unbound/util/data/msgreply.h index 708897950..acbdd3deb 100644 --- a/external/unbound/util/data/msgreply.h +++ b/external/unbound/util/data/msgreply.h @@ -49,8 +49,14 @@ struct alloc_cache; struct iovec; struct regional; struct edns_data; +struct edns_option; +struct inplace_cb; +struct module_qstate; +struct module_env; struct msg_parse; struct rrset_parse; +struct local_rrset; +struct dns_msg; /** calculate the prefetch TTL as 90% of original. Calculation * without numerical overflow (uin32_t) */ @@ -73,6 +79,23 @@ struct query_info { uint16_t qtype; /** qclass, host byte order */ uint16_t qclass; + /** + * Alias local answer(s) for the qname. If 'qname' is an alias defined + * in a local zone, this field will be set to the corresponding local + * RRset when the alias is determined. + * In the initial implementation this can only be a single CNAME RR + * (or NULL), but it could possibly be extended to be a DNAME or a + * chain of aliases. + * Users of this structure are responsible to initialize this field + * to be NULL; otherwise other part of query handling code may be + * confused. + * Users also have to be careful about the lifetime of data. On return + * from local zone lookup, it may point to data derived from + * configuration that may be dynamically invalidated or data allocated + * in an ephemeral regional allocator. A deep copy of the data may + * have to be generated if it has to be kept during iterative + * resolution. */ + struct local_rrset* local_alias; }; /** @@ -82,7 +105,7 @@ struct rrset_ref { /** the key with lock, and ptr to packed data. */ struct ub_packed_rrset_key* key; /** id needed */ - rrset_id_t id; + rrset_id_type id; }; /** @@ -307,7 +330,7 @@ void reply_info_delete(void* d, void* arg); /** calculate hash value of query_info, lowercases the qname, * uses CD flag for AAAA qtype */ -hashvalue_t query_info_hash(struct query_info *q, uint16_t flags); +hashvalue_type query_info_hash(struct query_info *q, uint16_t flags); /** * Setup query info entry @@ -317,7 +340,7 @@ hashvalue_t query_info_hash(struct query_info *q, uint16_t flags); * @return: newly allocated message reply cache item. */ struct msgreply_entry* query_info_entrysetup(struct query_info* q, - struct reply_info* r, hashvalue_t h); + struct reply_info* r, hashvalue_type h); /** * Copy reply_info and all rrsets in it and allocate. @@ -334,6 +357,21 @@ struct reply_info* reply_info_copy(struct reply_info* rep, struct alloc_cache* alloc, struct regional* region); /** + * Allocate (special) rrset keys. + * @param rep: reply info in which the rrset keys to be allocated, rrset[] + * array should have bee allocated with NULL pointers. + * @param alloc: how to allocate rrset keys. + * Not used if region!=NULL, it can be NULL in that case. + * @param region: if this parameter is NULL then the alloc is used. + * otherwise, rrset keys are allocated in this region. + * In a region, no special rrset key structures are needed (not shared). + * and no rrset_ref array in the reply needs to be built up. + * @return 1 on success, 0 on error + */ +int reply_info_alloc_rrset_keys(struct reply_info* rep, + struct alloc_cache* alloc, struct regional* region); + +/** * Copy a parsed rrset into given key, decompressing and allocating rdata. * @param pkt: packet for decompression * @param msg: the parser message (for flags for trust). @@ -425,10 +463,27 @@ struct ub_packed_rrset_key* reply_find_rrset(struct reply_info* rep, * @param qinfo: query section. * @param rep: rest of message. */ -void log_dns_msg(const char* str, struct query_info* qinfo, +void log_dns_msg(const char* str, struct query_info* qinfo, struct reply_info* rep); /** + * Print string with neat domain name, type, class, + * status code from, and size of a query response. + * + * @param v: at what verbosity level to print this. + * @param qinf: query section. + * @param addr: address of the client. + * @param addrlen: length of the client address. + * @param dur: how long it took to complete the query. + * @param cached: whether or not the reply is coming from + * the cache, or an outside network. + * @param rmsg: sldns buffer packet. + */ +void log_reply_info(enum verbosity_value v, struct query_info *qinf, + struct sockaddr_storage *addr, socklen_t addrlen, struct timeval dur, + int cached, struct sldns_buffer *rmsg); + +/** * Print string with neat domain name, type, class from query info. * @param v: at what verbosity level to print this. * @param str: string of message. @@ -437,4 +492,183 @@ void log_dns_msg(const char* str, struct query_info* qinfo, void log_query_info(enum verbosity_value v, const char* str, struct query_info* qinf); +/** + * Append edns option to edns data structure + * @param edns: the edns data structure to append the edns option to. + * @param region: region to allocate the new edns option. + * @param code: the edns option's code. + * @param len: the edns option's length. + * @param data: the edns option's data. + * @return false on failure. + */ +int edns_opt_append(struct edns_data* edns, struct regional* region, + uint16_t code, size_t len, uint8_t* data); + +/** + * Append edns option to edns option list + * @param list: the edns option list to append the edns option to. + * @param code: the edns option's code. + * @param len: the edns option's length. + * @param data: the edns option's data. + * @param region: region to allocate the new edns option. + * @return false on failure. + */ +int edns_opt_list_append(struct edns_option** list, uint16_t code, size_t len, + uint8_t* data, struct regional* region); + +/** + * Remove any option found on the edns option list that matches the code. + * @param list: the list of edns options. + * @param code: the opt code to remove. + * @return true when at least one edns option was removed, false otherwise. + */ +int edns_opt_list_remove(struct edns_option** list, uint16_t code); + +/** + * Find edns option in edns list + * @param list: list of edns options (eg. edns.opt_list) + * @param code: opt code to find. + * @return NULL or the edns_option element. + */ +struct edns_option* edns_opt_list_find(struct edns_option* list, uint16_t code); + +/** + * Call the registered functions in the inplace_cb_reply linked list. + * This function is going to get called while answering with a resolved query. + * @param env: module environment. + * @param qinfo: query info. + * @param qstate: module qstate. + * @param rep: Reply info. Could be NULL. + * @param rcode: return code. + * @param edns: edns data of the reply. + * @param region: region to store data. + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_reply_call(struct module_env* env, struct query_info* qinfo, + struct module_qstate* qstate, struct reply_info* rep, int rcode, + struct edns_data* edns, struct regional* region); + +/** + * Call the registered functions in the inplace_cb_reply_cache linked list. + * This function is going to get called while answering from cache. + * @param env: module environment. + * @param qinfo: query info. + * @param qstate: module qstate. NULL when replying from cache. + * @param rep: Reply info. + * @param rcode: return code. + * @param edns: edns data of the reply. Edns input can be found here. + * @param region: region to store data. + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_reply_cache_call(struct module_env* env, + struct query_info* qinfo, struct module_qstate* qstate, + struct reply_info* rep, int rcode, struct edns_data* edns, + struct regional* region); + +/** + * Call the registered functions in the inplace_cb_reply_local linked list. + * This function is going to get called while answering with local data. + * @param env: module environment. + * @param qinfo: query info. + * @param qstate: module qstate. NULL when replying from cache. + * @param rep: Reply info. + * @param rcode: return code. + * @param edns: edns data of the reply. Edns input can be found here. + * @param region: region to store data. + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_reply_local_call(struct module_env* env, + struct query_info* qinfo, struct module_qstate* qstate, + struct reply_info* rep, int rcode, struct edns_data* edns, + struct regional* region); + +/** + * Call the registered functions in the inplace_cb_reply linked list. + * This function is going to get called while answering with a servfail. + * @param env: module environment. + * @param qinfo: query info. + * @param qstate: module qstate. Contains the edns option lists. Could be NULL. + * @param rep: Reply info. NULL when servfail. + * @param rcode: return code. LDNS_RCODE_SERVFAIL. + * @param edns: edns data of the reply. Edns input can be found here if qstate + * is NULL. + * @param region: region to store data. + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_reply_servfail_call(struct module_env* env, + struct query_info* qinfo, struct module_qstate* qstate, + struct reply_info* rep, int rcode, struct edns_data* edns, + struct regional* region); + +/** + * Call the registered functions in the inplace_cb_query linked list. + * This function is going to get called just before sending a query to a + * nameserver. + * @param env: module environment. + * @param qinfo: query info. + * @param flags: flags of the query. + * @param addr: to which server to send the query. + * @param addrlen: length of addr. + * @param zone: name of the zone of the delegation point. wireformat dname. + * This is the delegation point name for which the server is deemed + * authoritative. + * @param zonelen: length of zone. + * @param qstate: module qstate. + * @param region: region to store data. + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_query_call(struct module_env* env, struct query_info* qinfo, + uint16_t flags, struct sockaddr_storage* addr, socklen_t addrlen, + uint8_t* zone, size_t zonelen, struct module_qstate* qstate, + struct regional* region); + +/** + * Call the registered functions in the inplace_cb_edns_back_parsed linked list. + * This function is going to get called after parsing the EDNS data on the + * reply from a nameserver. + * @param env: module environment. + * @param qstate: module qstate. + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_edns_back_parsed_call(struct module_env* env, + struct module_qstate* qstate); + +/** + * Call the registered functions in the inplace_cb_query_reponse linked list. + * This function is going to get called after receiving a reply from a + * nameserver. + * @param env: module environment. + * @param qstate: module qstate. + * @param response: received response + * @return false on failure (a callback function returned an error). + */ +int inplace_cb_query_response_call(struct module_env* env, + struct module_qstate* qstate, struct dns_msg* response); + +/** + * Copy edns option list allocated to the new region + */ +struct edns_option* edns_opt_copy_region(struct edns_option* list, + struct regional* region); + +/** + * Copy edns option list allocated with malloc + */ +struct edns_option* edns_opt_copy_alloc(struct edns_option* list); + +/** + * Free edns option list allocated with malloc + */ +void edns_opt_list_free(struct edns_option* list); + +/** + * Compare an edns option. (not entire list). Also compares contents. + */ +int edns_opt_compare(struct edns_option* p, struct edns_option* q); + +/** + * Compare edns option lists, also the order and contents of edns-options. + */ +int edns_opt_list_compare(struct edns_option* p, struct edns_option* q); + #endif /* UTIL_DATA_MSGREPLY_H */ |