a85b5759f3
These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
209 lines
6.2 KiB
C
209 lines
6.2 KiB
C
/*
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* validator/autotrust.h - RFC5011 trust anchor management for unbound.
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*
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* Copyright (c) 2009, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* Contains autotrust definitions.
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*/
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#ifndef VALIDATOR_AUTOTRUST_H
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#define VALIDATOR_AUTOTRUST_H
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#include "util/rbtree.h"
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#include "util/data/packed_rrset.h"
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struct val_anchors;
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struct trust_anchor;
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struct ub_packed_rrset_key;
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struct module_env;
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struct val_env;
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struct sldns_buffer;
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/** Autotrust anchor states */
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typedef enum {
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AUTR_STATE_START = 0,
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AUTR_STATE_ADDPEND = 1,
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AUTR_STATE_VALID = 2,
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AUTR_STATE_MISSING = 3,
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AUTR_STATE_REVOKED = 4,
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AUTR_STATE_REMOVED = 5
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} autr_state_type;
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/**
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* Autotrust metadata for one trust anchor key.
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*/
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struct autr_ta {
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/** next key */
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struct autr_ta* next;
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/** the RR */
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uint8_t* rr;
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/** length of rr */
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size_t rr_len, dname_len;
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/** last update of key state (new pending count keeps date the same) */
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time_t last_change;
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/** 5011 state */
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autr_state_type s;
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/** pending count */
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uint8_t pending_count;
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/** fresh TA was seen */
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uint8_t fetched;
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/** revoked TA was seen */
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uint8_t revoked;
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};
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/**
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* Autotrust metadata for a trust point.
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* This is part of the struct trust_anchor data.
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*/
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struct autr_point_data {
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/** file to store the trust point in. chrootdir already applied. */
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char* file;
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/** rbtree node for probe sort, key is struct trust_anchor */
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rbnode_type pnode;
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/** the keys */
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struct autr_ta* keys;
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/** last queried DNSKEY set
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* Not all failures are captured in this entry.
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* If the validator did not even start (e.g. timeout or localservfail),
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* then the last_queried and query_failed values are not updated.
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*/
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time_t last_queried;
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/** last successful DNSKEY set */
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time_t last_success;
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/** next probe time */
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time_t next_probe_time;
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/** when to query if !failed */
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time_t query_interval;
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/** when to retry if failed */
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time_t retry_time;
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/**
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* How many times did it fail. diagnostic only (has no effect).
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* Only updated if there was a dnskey rrset that failed to verify.
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*/
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uint8_t query_failed;
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/** true if the trust point has been revoked */
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uint8_t revoked;
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};
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/**
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* Autotrust global metadata.
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*/
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struct autr_global_data {
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/** rbtree of autotrust anchors sorted by next probe time.
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* When time is equal, sorted by anchor class, name. */
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rbtree_type probe;
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};
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/**
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* Create new global 5011 data structure.
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* @return new structure or NULL on malloc failure.
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*/
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struct autr_global_data* autr_global_create(void);
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/**
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* Delete global 5011 data structure.
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* @param global: global autotrust state to delete.
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*/
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void autr_global_delete(struct autr_global_data* global);
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/**
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* See if autotrust anchors are configured and how many.
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* @param anchors: the trust anchors structure.
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* @return number of autotrust trust anchors
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*/
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size_t autr_get_num_anchors(struct val_anchors* anchors);
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/**
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* Process probe timer. Add new probes if needed.
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* @param env: module environment with time, with anchors and with the mesh.
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* @return time of next probe (in seconds from now).
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* If 0, then there is no next probe anymore (trust points deleted).
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*/
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time_t autr_probe_timer(struct module_env* env);
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/** probe tree compare function */
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int probetree_cmp(const void* x, const void* y);
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/**
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* Read autotrust file.
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* @param anchors: the anchors structure.
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* @param nm: name of the file (copied).
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* @return false on failure.
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*/
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int autr_read_file(struct val_anchors* anchors, const char* nm);
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/**
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* Write autotrust file.
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* @param env: environment with scratch space.
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* @param tp: trust point to write.
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*/
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void autr_write_file(struct module_env* env, struct trust_anchor* tp);
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/**
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* Delete autr anchor, deletes the autr data but does not do
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* unlinking from trees, caller does that.
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* @param tp: trust point to delete.
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*/
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void autr_point_delete(struct trust_anchor* tp);
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/**
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* Perform autotrust processing.
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* @param env: qstate environment with the anchors structure.
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* @param ve: validator environment for verification of rrsigs.
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* @param tp: trust anchor to process.
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* @param dnskey_rrset: DNSKEY rrset probed (can be NULL if bad prime result).
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* allocated in a region. Has not been validated yet.
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* @return false if trust anchor was revoked completely.
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* Otherwise logs errors to log, does not change return value.
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* On errors, likely the trust point has been unchanged.
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*/
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int autr_process_prime(struct module_env* env, struct val_env* ve,
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struct trust_anchor* tp, struct ub_packed_rrset_key* dnskey_rrset);
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/**
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* Debug printout of rfc5011 tracked anchors
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* @param anchors: all the anchors.
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*/
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void autr_debug_print(struct val_anchors* anchors);
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/** callback for query answer to 5011 probe */
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void probe_answer_cb(void* arg, int rcode, struct sldns_buffer* buf,
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enum sec_status sec, char* errinf);
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#endif /* VALIDATOR_AUTOTRUST_H */
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