2 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
12 #include <openssl/err.h>
13 #include <openssl/lhash.h>
14 #include "internal/propertyerr.h"
15 #include "internal/property.h"
16 #include "property_lcl.h"
19 * Implement a property definition cache.
20 * These functions assume that they are called under a write lock.
21 * No attempt is made to clean out the cache, except when it is shut down.
26 OSSL_PROPERTY_LIST *defn;
30 DEFINE_LHASH_OF(PROPERTY_DEFN_ELEM);
32 static LHASH_OF(PROPERTY_DEFN_ELEM) *property_defns = NULL;
34 static unsigned long property_defn_hash(const PROPERTY_DEFN_ELEM *a)
36 return OPENSSL_LH_strhash(a->prop);
39 static int property_defn_cmp(const PROPERTY_DEFN_ELEM *a,
40 const PROPERTY_DEFN_ELEM *b)
42 return strcmp(a->prop, b->prop);
45 static void property_defn_free(PROPERTY_DEFN_ELEM *elem)
47 ossl_property_free(elem->defn);
51 int ossl_prop_defn_init(void)
53 property_defns = lh_PROPERTY_DEFN_ELEM_new(&property_defn_hash,
55 return property_defns != NULL;
58 void ossl_prop_defn_cleanup(void)
60 if (property_defns != NULL) {
61 lh_PROPERTY_DEFN_ELEM_doall(property_defns, &property_defn_free);
62 lh_PROPERTY_DEFN_ELEM_free(property_defns);
63 property_defns = NULL;
67 OSSL_PROPERTY_LIST *ossl_prop_defn_get(const char *prop)
69 PROPERTY_DEFN_ELEM elem, *r;
72 r = lh_PROPERTY_DEFN_ELEM_retrieve(property_defns, &elem);
73 return r != NULL ? r->defn : NULL;
76 int ossl_prop_defn_set(const char *prop, OSSL_PROPERTY_LIST *pl)
78 PROPERTY_DEFN_ELEM elem, *old, *p = NULL;
86 lh_PROPERTY_DEFN_ELEM_delete(property_defns, &elem);
90 p = OPENSSL_malloc(sizeof(*p) + len);
94 memcpy(p->body, prop, len + 1);
95 old = lh_PROPERTY_DEFN_ELEM_insert(property_defns, p);
97 property_defn_free(old);
100 if (!lh_PROPERTY_DEFN_ELEM_error(property_defns))