2 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/ossl_typ.h>
12 #include <openssl/evp.h>
13 #include <openssl/core.h>
14 #include "internal/cryptlib.h"
15 #include "internal/thread_once.h"
16 #include "internal/property.h"
17 #include "internal/core.h"
18 #include "internal/namemap.h"
19 #include "internal/evp_int.h" /* evp_locl.h needs it */
22 static void default_method_store_free(void *vstore)
24 ossl_method_store_free(vstore);
27 static void *default_method_store_new(OPENSSL_CTX *ctx)
29 return ossl_method_store_new(ctx);
33 static const OPENSSL_CTX_METHOD default_method_store_method = {
34 default_method_store_new,
35 default_method_store_free,
38 /* Data to be passed through ossl_method_construct() */
39 struct method_data_st {
43 OSSL_METHOD_CONSTRUCT_METHOD *mcm;
44 void *(*method_from_dispatch)(int nid, const OSSL_DISPATCH *,
46 int (*refcnt_up_method)(void *method);
47 void (*destruct_method)(void *method);
48 int (*nid_method)(void *method);
52 * Generic routines to fetch / create EVP methods with ossl_method_construct()
54 static void *alloc_tmp_method_store(OPENSSL_CTX *ctx)
56 return ossl_method_store_new(ctx);
59 static void dealloc_tmp_method_store(void *store)
62 ossl_method_store_free(store);
65 static OSSL_METHOD_STORE *get_default_method_store(OPENSSL_CTX *libctx)
67 return openssl_ctx_get_data(libctx, OPENSSL_CTX_DEFAULT_METHOD_STORE_INDEX,
68 &default_method_store_method);
71 static void *get_method_from_store(OPENSSL_CTX *libctx, void *store,
72 const char *name, const char *propquery,
75 struct method_data_st *methdata = data;
77 OSSL_NAMEMAP *namemap;
81 && (store = get_default_method_store(libctx)) == NULL)
84 if ((namemap = ossl_namemap_stored(libctx)) == NULL
85 || (id = ossl_namemap_add(namemap, name)) == 0)
88 (void)ossl_method_store_fetch(store, id, propquery, &method);
91 && !methdata->refcnt_up_method(method)) {
97 static int put_method_in_store(OPENSSL_CTX *libctx, void *store,
98 void *method, const char *name,
99 const char *propdef, void *data)
101 struct method_data_st *methdata = data;
102 OSSL_NAMEMAP *namemap;
105 if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL
106 || (id = ossl_namemap_add(namemap, name)) == 0)
110 && (store = get_default_method_store(libctx)) == NULL)
113 if (methdata->refcnt_up_method(method)
114 && ossl_method_store_add(store, id, propdef, method,
115 methdata->destruct_method))
120 static void *construct_method(const char *name, const OSSL_DISPATCH *fns,
121 OSSL_PROVIDER *prov, void *data)
123 struct method_data_st *methdata = data;
124 /* TODO(3.0) get rid of the need for legacy NIDs */
125 int legacy_nid = OBJ_sn2nid(name);
127 return methdata->method_from_dispatch(legacy_nid, fns, prov);
130 static void destruct_method(void *method, void *data)
132 struct method_data_st *methdata = data;
134 methdata->destruct_method(method);
137 void *evp_generic_fetch(OPENSSL_CTX *libctx, int operation_id,
138 const char *name, const char *properties,
139 void *(*new_method)(int nid, const OSSL_DISPATCH *fns,
140 OSSL_PROVIDER *prov),
141 int (*upref_method)(void *),
142 void (*free_method)(void *),
143 int (*nid_method)(void *))
145 OSSL_METHOD_STORE *store = get_default_method_store(libctx);
146 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
150 if (store == NULL || namemap == NULL)
153 if ((id = ossl_namemap_number(namemap, name)) == 0
154 || !ossl_method_store_cache_get(store, id, properties, &method)) {
155 OSSL_METHOD_CONSTRUCT_METHOD mcm = {
156 alloc_tmp_method_store,
157 dealloc_tmp_method_store,
158 get_method_from_store,
163 struct method_data_st mcmdata;
166 mcmdata.libctx = libctx;
167 mcmdata.method_from_dispatch = new_method;
168 mcmdata.destruct_method = free_method;
169 mcmdata.refcnt_up_method = upref_method;
170 mcmdata.destruct_method = free_method;
171 mcmdata.nid_method = nid_method;
172 method = ossl_method_construct(libctx, operation_id, name,
173 properties, 0 /* !force_cache */,
175 ossl_method_store_cache_set(store, id, properties, method);
177 upref_method(method);
183 int EVP_set_default_properties(OPENSSL_CTX *libctx, const char *propq)
185 OSSL_METHOD_STORE *store = get_default_method_store(libctx);
188 return ossl_method_store_set_global_properties(store, propq);
189 EVPerr(EVP_F_EVP_SET_DEFAULT_PROPERTIES, ERR_R_INTERNAL_ERROR);