key entry.

git-svn-id: file:///svn/unbound/trunk@490 be551aaa-1e26-0410-a405-d3ace91eadb9

doc/Changelog

@@ -5,6 +5,7 @@
 	  DS and DNSKEY entries.
 	- unit test trust anchor storage.
 	- trust anchors converted to packed rrsets.
+	- key entry definition.
 
 2 August 2007: Wouter
 	- configure change for latest libevent trunk version (needs -lrt).

validator/val_kentry.c

@@ -0,0 +1,100 @@
+/*
+ * validator/val_kentry.c - validator key entry definition.
+ *
+ * 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 REGENTS 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 functions for dealing with validator key entries.
+ */
+#include "config.h"
+#include "validator/val_kentry.h"
+#include "util/data/packed_rrset.h"
+#include "util/data/dname.h"
+#include "util/storage/lookup3.h"
+
+size_t 
+key_entry_sizefunc_t(void* key, void* data)
+{
+	struct key_entry_key* kk = (struct key_entry_key*)key;
+	struct key_entry_data* kd = (struct key_entry_data*)data;
+	size_t s = sizeof(*kk) + kk->namelen;
+	s += sizeof(*kd);
+	if(kd->rrset_data)
+		s += packed_rrset_sizeof(kd->rrset_data);
+	return s;
+}
+
+int 
+key_entry_compfunc_t(void* k1, void* k2)
+{
+	struct key_entry_key* n1 = (struct key_entry_key*)k1;
+	struct key_entry_key* n2 = (struct key_entry_key*)k2;
+	if(n1->key_class != n2->key_class) {
+		if(n1->key_class < n2->key_class)
+			return -1;
+		return 1;
+	}
+	return query_dname_compare(n1->name, n2->name);
+}
+
+void 
+key_entry_delkeyfunc_t(void* key, void* ATTR_UNUSED(userarg), int islocked)
+{
+	struct key_entry_key* kk = (struct key_entry_key*)key;
+	if(!key)
+		return;
+	if(islocked) {
+		lock_rw_unlock(&kk->entry.lock);
+	}
+	free(kk->name);
+	free(kk);
+}
+
+void 
+key_entry_deldatafunc_t(void* data, void* ATTR_UNUSED(userarg))
+{
+	struct key_entry_data* kd = (struct key_entry_data*)data;
+	free(kd->rrset_data);
+	free(kd);
+}
+
+void 
+key_entry_hash(struct key_entry_key* kk)
+{
+	kk->entry.hash = 0x654;
+	kk->entry.hash = hashlittle(&kk->key_class, sizeof(kk->key_class), 
+		kk->entry.hash);
+	kk->entry.hash = dname_query_hash(kk->name, kk->entry.hash);
+}

validator/val_kentry.h

@@ -0,0 +1,102 @@
+/*
+ * validator/val_kentry.h - validator key entry definition.
+ *
+ * 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 REGENTS 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 functions for dealing with validator key entries.
+ */
+
+#ifndef VALIDATOR_VAL_KENTRY_H
+#define VALIDATOR_VAL_KENTRY_H
+struct packed_rrset_data;
+#include "util/storage/lruhash.h"
+
+/**
+ * A key entry for the validator.
+ * This may or may not be a trusted key.
+ * This is what is stored in the key cache.
+ * This is the key part for the cache; the key entry key.
+ */
+struct key_entry_key {
+	/** lru hash entry */
+	struct lruhash_entry entry;
+	/** name of the key */
+	uint8_t* name;
+	/** length of name */
+	size_t namelen;
+	/** class of the key, host byteorder */
+	uint16_t key_class;
+};
+
+/**
+ * Key entry for the validator.
+ * Contains key status.
+ * This is the data part for the cache, the key entry data.
+ *
+ * Can be in three basic states:
+ * 	isbad=0:		good key
+ * 	isbad=1:		bad key
+ * 	isbad=0 && rrset=0:	insecure space.
+ */
+struct key_entry_data {
+	/** the TTL of this entry (absolute time) */
+	uint32_t ttl;
+	/** the key rrdata. can be NULL to signal keyless name. */
+	struct packed_rrset_data* rrset_data;
+	/** DNS RR type of the rrset data */
+	uint16_t rrset_type;
+	/** if the key is bad: Bogus or malformed */
+	uint8_t isbad;
+};
+
+/** function for lruhash operation */
+size_t key_entry_sizefunc_t(void* key, void* data);
+
+/** function for lruhash operation */
+int key_entry_compfunc_t(void* k1, void* k2);
+
+/** function for lruhash operation */
+void key_entry_delkeyfunc_t(void* key, void* userarg, int islocked);
+
+/** function for lruhash operation */
+void key_entry_deldatafunc_t(void* data, void* userarg);
+
+/** calculate hash for key entry 
+ * @param kk: key entry. The lruhash entry.hash value is filled in.
+ */
+void key_entry_hash(struct key_entry_key* kk);
+
+#endif /* VALIDATOR_VAL_KENTRY_H */