Security-55163.44.tar.gz

[apple/security.git] / sec / securityd / policytree.h

diff --git a/sec/securityd/policytree.h b/sec/securityd/policytree.h
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+/*
+ * Copyright (c) 2009-2010 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*!
+    @header policytree
+    The functions provided in policytree.h provide an interface to
+    a policy_tree implementation as specified in section 6 of rfc5280.
+*/
+
+#ifndef _SECURITY_POLICYTREE_H_
+#define _SECURITY_POLICYTREE_H_
+
+#include <libDER/libDER.h>
+#include <sys/queue.h>
+#include <stdbool.h>
+#include <Security/certextensions.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#define oid_equal(oid1, oid2) DEROidCompare(&oid1, &oid2)
+typedef DERItem oid_t;
+typedef DERItem der_t;
+
+typedef struct policy_set *policy_set_t;
+struct policy_set {
+    oid_t oid;
+    policy_set_t oid_next;
+};
+
+typedef const DERItem *policy_qualifier_t;
+
+typedef struct policy_tree *policy_tree_t;
+struct policy_tree {
+    oid_t valid_policy;
+    policy_qualifier_t qualifier_set;
+    policy_set_t expected_policy_set;
+    policy_tree_t children;
+    policy_tree_t siblings;
+};
+
+void policy_set_add(policy_set_t *policy_set, const oid_t *p_oid);
+void policy_set_intersect(policy_set_t *policy_set, policy_set_t other_set);
+bool policy_set_contains(policy_set_t policy_set, const oid_t *oid);
+void policy_set_free(policy_set_t policy_set);
+
+policy_tree_t policy_tree_create(const oid_t *p_oid, policy_qualifier_t p_q);
+
+bool policy_tree_walk_depth(policy_tree_t root, int depth,
+    bool(*callback)(policy_tree_t, void *), void *ctx);
+
+void policy_tree_prune(policy_tree_t *node);
+void policy_tree_prune_childless(policy_tree_t *root, int depth);
+void policy_tree_add_child(policy_tree_t parent,
+    const oid_t *p_oid, policy_qualifier_t p_q);
+void policy_tree_set_expected_policy(policy_tree_t node,
+    policy_set_t p_expected);
+
+/* noop unless !defined NDEBUG */
+void policy_tree_dump(policy_tree_t node);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* !_SECURITY_POLICYTREE_H_ */