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Diffstat (limited to 'external/unbound/iterator/iter_delegpt.h')
| -rw-r--r-- | external/unbound/iterator/iter_delegpt.h | 419 |
1 files changed, 0 insertions, 419 deletions
diff --git a/external/unbound/iterator/iter_delegpt.h b/external/unbound/iterator/iter_delegpt.h deleted file mode 100644 index 4bd79c81a..000000000 --- a/external/unbound/iterator/iter_delegpt.h +++ /dev/null @@ -1,419 +0,0 @@ -/* - * iterator/iter_delegpt.h - delegation point with NS and address information. - * - * Copyright (c) 2007, NLnet Labs. All rights reserved. - * - * This software is open source. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * Neither the name of the NLNET LABS nor the names of its contributors may - * be used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED - * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * \file - * - * This file implements the Delegation Point. It contains a list of name servers - * and their addresses if known. - */ - -#ifndef ITERATOR_ITER_DELEGPT_H -#define ITERATOR_ITER_DELEGPT_H -#include "util/log.h" -struct regional; -struct delegpt_ns; -struct delegpt_addr; -struct dns_msg; -struct ub_packed_rrset_key; -struct msgreply_entry; - -/** - * Delegation Point. - * For a domain name, the NS rrset, and the A and AAAA records for those. - */ -struct delegpt { - /** the domain name of the delegation point. */ - uint8_t* name; - /** length of the delegation point name */ - size_t namelen; - /** number of labels in delegation point */ - int namelabs; - - /** the nameservers, names from the NS RRset rdata. */ - struct delegpt_ns* nslist; - /** the target addresses for delegation */ - struct delegpt_addr* target_list; - /** the list of usable targets; subset of target_list - * the items in this list are not part of the result list. */ - struct delegpt_addr* usable_list; - /** the list of returned targets; subset of target_list */ - struct delegpt_addr* result_list; - - /** if true, the NS RRset was bogus. All info is bad. */ - int bogus; - /** if true, the parent-side NS record has been applied: - * its names have been added and their addresses can follow later. - * Also true if the delegationpoint was created from a delegation - * message and thus contains the parent-side-info already. */ - uint8_t has_parent_side_NS; - /** for assertions on type of delegpt */ - uint8_t dp_type_mlc; - /** use SSL for upstream query */ - uint8_t ssl_upstream; -}; - -/** - * Nameservers for a delegation point. - */ -struct delegpt_ns { - /** next in list */ - struct delegpt_ns* next; - /** name of nameserver */ - uint8_t* name; - /** length of name */ - size_t namelen; - /** - * If the name has been resolved. false if not queried for yet. - * true if the A, AAAA queries have been generated. - * marked true if those queries fail. - * and marked true if got4 and got6 are both true. - */ - int resolved; - /** if the ipv4 address is in the delegpt */ - uint8_t got4; - /** if the ipv6 address is in the delegpt */ - uint8_t got6; - /** - * If the name is parent-side only and thus dispreferred. - * Its addresses become dispreferred as well - */ - uint8_t lame; - /** if the parent-side ipv4 address has been looked up (last resort). - * Also enabled if a parent-side cache entry exists, or a parent-side - * negative-cache entry exists. */ - uint8_t done_pside4; - /** if the parent-side ipv6 address has been looked up (last resort). - * Also enabled if a parent-side cache entry exists, or a parent-side - * negative-cache entry exists. */ - uint8_t done_pside6; -}; - -/** - * Address of target nameserver in delegation point. - */ -struct delegpt_addr { - /** next delegation point in results */ - struct delegpt_addr* next_result; - /** next delegation point in usable list */ - struct delegpt_addr* next_usable; - /** next delegation point in all targets list */ - struct delegpt_addr* next_target; - - /** delegation point address */ - struct sockaddr_storage addr; - /** length of addr */ - socklen_t addrlen; - /** number of attempts for this addr */ - int attempts; - /** rtt stored here in the selection algorithm */ - int sel_rtt; - /** if true, the A or AAAA RR was bogus, so this address is bad. - * Also check the dp->bogus to see if everything is bogus. */ - uint8_t bogus; - /** if true, this address is dispreferred: it is a lame IP address */ - uint8_t lame; - /** if the address is dnsseclame, but this cannot be cached, this - * option is useful to mark the address dnsseclame. - * This value is not copied in addr-copy and dp-copy. */ - uint8_t dnsseclame; -}; - -/** - * Create new delegation point. - * @param regional: where to allocate it. - * @return new delegation point or NULL on error. - */ -struct delegpt* delegpt_create(struct regional* regional); - -/** - * Create a copy of a delegation point. - * @param dp: delegation point to copy. - * @param regional: where to allocate it. - * @return new delegation point or NULL on error. - */ -struct delegpt* delegpt_copy(struct delegpt* dp, struct regional* regional); - -/** - * Set name of delegation point. - * @param dp: delegation point. - * @param regional: where to allocate the name copy. - * @param name: name to use. - * @return false on error. - */ -int delegpt_set_name(struct delegpt* dp, struct regional* regional, - uint8_t* name); - -/** - * Add a name to the delegation point. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param name: domain name in wire format. - * @param lame: name is lame, disprefer it. - * @return false on error. - */ -int delegpt_add_ns(struct delegpt* dp, struct regional* regional, - uint8_t* name, uint8_t lame); - -/** - * Add NS rrset; calls add_ns repeatedly. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param ns_rrset: NS rrset. - * @param lame: rrset is lame, disprefer it. - * @return 0 on alloc error. - */ -int delegpt_rrset_add_ns(struct delegpt* dp, struct regional* regional, - struct ub_packed_rrset_key* ns_rrset, uint8_t lame); - -/** - * Add target address to the delegation point. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param name: name for which target was found (must be in nslist). - * This name is marked resolved. - * @param namelen: length of name. - * @param addr: the address. - * @param addrlen: the length of addr. - * @param bogus: security status for the address, pass true if bogus. - * @param lame: address is lame. - * @return false on error. - */ -int delegpt_add_target(struct delegpt* dp, struct regional* regional, - uint8_t* name, size_t namelen, struct sockaddr_storage* addr, - socklen_t addrlen, uint8_t bogus, uint8_t lame); - -/** - * Add A RRset to delegpt. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param rrset: RRset A to add. - * @param lame: rrset is lame, disprefer it. - * @return 0 on alloc error. - */ -int delegpt_add_rrset_A(struct delegpt* dp, struct regional* regional, - struct ub_packed_rrset_key* rrset, uint8_t lame); - -/** - * Add AAAA RRset to delegpt. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param rrset: RRset AAAA to add. - * @param lame: rrset is lame, disprefer it. - * @return 0 on alloc error. - */ -int delegpt_add_rrset_AAAA(struct delegpt* dp, struct regional* regional, - struct ub_packed_rrset_key* rrset, uint8_t lame); - -/** - * Add any RRset to delegpt. - * Does not check for duplicates added. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param rrset: RRset to add, NS, A, AAAA. - * @param lame: rrset is lame, disprefer it. - * @return 0 on alloc error. - */ -int delegpt_add_rrset(struct delegpt* dp, struct regional* regional, - struct ub_packed_rrset_key* rrset, uint8_t lame); - -/** - * Add address to the delegation point. No servername is associated or checked. - * @param dp: delegation point. - * @param regional: where to allocate the info. - * @param addr: the address. - * @param addrlen: the length of addr. - * @param bogus: if address is bogus. - * @param lame: if address is lame. - * @return false on error. - */ -int delegpt_add_addr(struct delegpt* dp, struct regional* regional, - struct sockaddr_storage* addr, socklen_t addrlen, - uint8_t bogus, uint8_t lame); - -/** - * Find NS record in name list of delegation point. - * @param dp: delegation point. - * @param name: name of nameserver to look for, uncompressed wireformat. - * @param namelen: length of name. - * @return the ns structure or NULL if not found. - */ -struct delegpt_ns* delegpt_find_ns(struct delegpt* dp, uint8_t* name, - size_t namelen); - -/** - * Find address record in total list of delegation point. - * @param dp: delegation point. - * @param addr: address - * @param addrlen: length of addr - * @return the addr structure or NULL if not found. - */ -struct delegpt_addr* delegpt_find_addr(struct delegpt* dp, - struct sockaddr_storage* addr, socklen_t addrlen); - -/** - * Print the delegation point to the log. For debugging. - * @param v: verbosity value that is needed to emit to log. - * @param dp: delegation point. - */ -void delegpt_log(enum verbosity_value v, struct delegpt* dp); - -/** count NS and number missing for logging */ -void delegpt_count_ns(struct delegpt* dp, size_t* numns, size_t* missing); - -/** count addresses, and number in result and available lists, for logging */ -void delegpt_count_addr(struct delegpt* dp, size_t* numaddr, size_t* numres, - size_t* numavail); - -/** - * Add all usable targets to the result list. - * @param dp: delegation point. - */ -void delegpt_add_unused_targets(struct delegpt* dp); - -/** - * Count number of missing targets. These are ns names with no resolved flag. - * @param dp: delegation point. - * @return number of missing targets (or 0). - */ -size_t delegpt_count_missing_targets(struct delegpt* dp); - -/** count total number of targets in dp */ -size_t delegpt_count_targets(struct delegpt* dp); - -/** - * Create new delegation point from a dns message - * - * Note that this method does not actually test to see if the message is an - * actual referral. It really is just checking to see if it can construct a - * delegation point, so the message could be of some other type (some ANSWER - * messages, some CNAME messages, generally.) Note that the resulting - * DelegationPoint will contain targets for all "relevant" glue (i.e., - * address records whose ownernames match the target of one of the NS - * records), so if policy dictates that some glue should be discarded beyond - * that, discard it before calling this method. Note that this method will - * find "glue" in either the ADDITIONAL section or the ANSWER section. - * - * @param msg: the dns message, referral. - * @param regional: where to allocate delegation point. - * @return new delegation point or NULL on alloc error, or if the - * message was not appropriate. - */ -struct delegpt* delegpt_from_message(struct dns_msg* msg, - struct regional* regional); - -/** - * Add negative message to delegation point. - * @param dp: delegation point. - * @param msg: the message added, marks off A or AAAA from an NS entry. - */ -void delegpt_add_neg_msg(struct delegpt* dp, struct msgreply_entry* msg); - -/** - * Register the fact that there is no ipv6 and thus AAAAs are not going - * to be queried for or be useful. - * @param dp: the delegation point. Updated to reflect no ipv6. - */ -void delegpt_no_ipv6(struct delegpt* dp); - -/** - * Register the fact that there is no ipv4 and thus As are not going - * to be queried for or be useful. - * @param dp: the delegation point. Updated to reflect no ipv4. - */ -void delegpt_no_ipv4(struct delegpt* dp); - -/** - * create malloced delegation point, with the given name - * @param name: uncompressed wireformat of delegpt name. - * @return NULL on alloc failure - */ -struct delegpt* delegpt_create_mlc(uint8_t* name); - -/** - * free malloced delegation point. - * @param dp: must have been created with delegpt_create_mlc, free'd. - */ -void delegpt_free_mlc(struct delegpt* dp); - -/** - * Set name of delegation point. - * @param dp: delegation point. malloced. - * @param name: name to use. - * @return false on error. - */ -int delegpt_set_name_mlc(struct delegpt* dp, uint8_t* name); - -/** - * add a name to malloced delegation point. - * @param dp: must have been created with delegpt_create_mlc. - * @param name: the name to add. - * @param lame: the name is lame, disprefer. - * @return false on error. - */ -int delegpt_add_ns_mlc(struct delegpt* dp, uint8_t* name, uint8_t lame); - -/** - * add an address to a malloced delegation point. - * @param dp: must have been created with delegpt_create_mlc. - * @param addr: the address. - * @param addrlen: the length of addr. - * @param bogus: if address is bogus. - * @param lame: if address is lame. - * @return false on error. - */ -int delegpt_add_addr_mlc(struct delegpt* dp, struct sockaddr_storage* addr, - socklen_t addrlen, uint8_t bogus, uint8_t lame); - -/** - * Add target address to the delegation point. - * @param dp: must have been created with delegpt_create_mlc. - * @param name: name for which target was found (must be in nslist). - * This name is marked resolved. - * @param namelen: length of name. - * @param addr: the address. - * @param addrlen: the length of addr. - * @param bogus: security status for the address, pass true if bogus. - * @param lame: address is lame. - * @return false on error. - */ -int delegpt_add_target_mlc(struct delegpt* dp, uint8_t* name, size_t namelen, - struct sockaddr_storage* addr, socklen_t addrlen, uint8_t bogus, - uint8_t lame); - -/** get memory in use by dp */ -size_t delegpt_get_mem(struct delegpt* dp); - -#endif /* ITERATOR_ITER_DELEGPT_H */ |