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diff --git a/external/unbound/validator/val_anchor.h b/external/unbound/validator/val_anchor.h
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--- a/external/unbound/validator/val_anchor.h
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-/*
- * validator/val_anchor.h - validator trust anchor storage.
- *
- * 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 contains storage for the trust anchors for the validator.
- */
-
-#ifndef VALIDATOR_VAL_ANCHOR_H
-#define VALIDATOR_VAL_ANCHOR_H
-#include "util/rbtree.h"
-#include "util/locks.h"
-struct trust_anchor;
-struct config_file;
-struct ub_packed_rrset_key;
-struct autr_point_data;
-struct autr_global_data;
-struct sldns_buffer;
-
-/**
- * Trust anchor store.
- * The tree must be locked, while no other locks (from trustanchors) are held.
- * And then an anchor searched for.  Which can be locked or deleted.  Then
- * the tree can be unlocked again.  This means you have to release the lock
- * on a trust anchor and look it up again to delete it.
- */
-struct val_anchors {
-	/** lock on trees */
-	lock_basic_type lock;
-	/**
-	 * Anchors are store in this tree. Sort order is chosen, so that
-	 * dnames are in nsec-like order. A lookup on class, name will return
-	 * an exact match of the closest match, with the ancestor needed.
-	 * contents of type trust_anchor.
-	 */
-	rbtree_type* tree;
-	/** The DLV trust anchor (if one is configured, else NULL) */
-	struct trust_anchor* dlv_anchor;
-	/** Autotrust global data, anchors sorted by next probe time */
-	struct autr_global_data* autr;
-};
-
-/**
- * Trust anchor key
- */
-struct ta_key {
-	/** next in list */
-	struct ta_key* next;
-	/** rdata, in wireformat of the key RR. starts with rdlength. */
-	uint8_t* data;
-	/** length of the rdata (including rdlength). */
-	size_t len;
-	/** DNS type (host format) of the key, DS or DNSKEY */
-	uint16_t type;
-};
-
-/**
- * A trust anchor in the trust anchor store.
- * Unique by name, class.
- */
-struct trust_anchor {
-	/** rbtree node, key is this structure */
-	rbnode_type node;
-	/** lock on the entire anchor and its keys; for autotrust changes */
-	lock_basic_type lock;
-	/** name of this trust anchor */
-	uint8_t* name;
-	/** length of name */
-	size_t namelen;
-	/** number of labels in name of rrset */
-	int namelabs;
-	/** the ancestor in the trustanchor tree */
-	struct trust_anchor* parent;
-	/** 
-	 * List of DS or DNSKEY rrs that form the trust anchor.
-	 */
-	struct ta_key* keylist;
-	/** Autotrust anchor point data, or NULL */
-	struct autr_point_data* autr;
-	/** number of DSs in the keylist */
-	size_t numDS;
-	/** number of DNSKEYs in the keylist */
-	size_t numDNSKEY;
-	/** the DS RRset */
-	struct ub_packed_rrset_key* ds_rrset;
-	/** The DNSKEY RRset */
-	struct ub_packed_rrset_key* dnskey_rrset;
-	/** class of the trust anchor */
-	uint16_t dclass;
-};
-
-/**
- * Create trust anchor storage
- * @return new storage or NULL on error.
- */
-struct val_anchors* anchors_create(void);
-
-/**
- * Delete trust anchor storage.
- * @param anchors: to delete.
- */
-void anchors_delete(struct val_anchors* anchors);
-
-/**
- * Process trust anchor config.
- * @param anchors: struct anchor storage
- * @param cfg: config options.
- * @return 0 on error.
- */
-int anchors_apply_cfg(struct val_anchors* anchors, struct config_file* cfg);
-
-/**
- * Recalculate parent pointers.  The caller must hold the lock on the
- * anchors structure (say after removing an item from the rbtree).
- * Caller must not hold any locks on trust anchors.
- * After the call is complete the parent pointers are updated and an item
- * just removed is no longer referenced in parent pointers.
- * @param anchors: the structure to update.
- */
-void anchors_init_parents_locked(struct val_anchors* anchors);
-
-/**
- * Given a qname/qclass combination, find the trust anchor closest above it.
- * Or return NULL if none exists.
- *
- * @param anchors: struct anchor storage
- * @param qname: query name, uncompressed wireformat.
- * @param qname_len: length of qname.
- * @param qclass: class to query for.
- * @return the trust anchor or NULL if none is found. The anchor is locked.
- */
-struct trust_anchor* anchors_lookup(struct val_anchors* anchors,
-	uint8_t* qname, size_t qname_len, uint16_t qclass);
-
-/**
- * Find a trust anchor. Exact matching.
- * @param anchors: anchor storage.
- * @param name: name of trust anchor (wireformat)
- * @param namelabs: labels in name
- * @param namelen: length of name
- * @param dclass: class of trust anchor
- * @return NULL if not found. The anchor is locked.
- */
-struct trust_anchor* anchor_find(struct val_anchors* anchors, 
-	uint8_t* name, int namelabs, size_t namelen, uint16_t dclass);
-
-/**
- * Store one string as trust anchor RR.
- * @param anchors: anchor storage.
- * @param buffer: parsing buffer, to generate the RR wireformat in.
- * @param str: string.
- * @return NULL on error.
- */
-struct trust_anchor* anchor_store_str(struct val_anchors* anchors, 
-	struct sldns_buffer* buffer, const char* str);
-
-/**
- * Get memory in use by the trust anchor storage
- * @param anchors: anchor storage.
- * @return memory in use in bytes.
- */
-size_t anchors_get_mem(struct val_anchors* anchors);
-
-/** compare two trust anchors */
-int anchor_cmp(const void* k1, const void* k2);
-
-/**
- * Add insecure point trust anchor.  For external use (locks and init_parents)
- * @param anchors: anchor storage.
- * @param c: class.
- * @param nm: name of insecure trust point.
- * @return false on alloc failure.
- */
-int anchors_add_insecure(struct val_anchors* anchors, uint16_t c, uint8_t* nm);
-
-/**
- * Delete insecure point trust anchor.  Does not remove if no such point.
- * For external use (locks and init_parents)
- * @param anchors: anchor storage.
- * @param c: class.
- * @param nm: name of insecure trust point.
- */
-void anchors_delete_insecure(struct val_anchors* anchors, uint16_t c,
-	uint8_t* nm);
-
-/**
- * Get a list of keytags for the trust anchor.  Zero tags for insecure points.
- * @param ta: trust anchor (locked by caller).
- * @param list: array of uint16_t.
- * @param num: length of array.
- * @return number of keytags filled into array.  If total number of keytags is
- * bigger than the array, it is truncated at num.  On errors, less keytags
- * are filled in.  The array is sorted.
- */
-size_t anchor_list_keytags(struct trust_anchor* ta, uint16_t* list, size_t num);
-
-#endif /* VALIDATOR_VAL_ANCHOR_H */