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)(const OSSL_DISPATCH *, OSSL_PROVIDER *);
45 int (*refcnt_up_method)(void *method);
46 void (*destruct_method)(void *method);
50 * Generic routines to fetch / create EVP methods with ossl_method_construct()
52 static void *alloc_tmp_method_store(OPENSSL_CTX *ctx)
54 return ossl_method_store_new(ctx);
57 static void dealloc_tmp_method_store(void *store)
60 ossl_method_store_free(store);
63 static OSSL_METHOD_STORE *get_default_method_store(OPENSSL_CTX *libctx)
65 return openssl_ctx_get_data(libctx, OPENSSL_CTX_DEFAULT_METHOD_STORE_INDEX,
66 &default_method_store_method);
69 static void *get_method_from_store(OPENSSL_CTX *libctx, void *store,
70 const char *name, const char *propquery,
73 struct method_data_st *methdata = data;
75 OSSL_NAMEMAP *namemap;
79 && (store = get_default_method_store(libctx)) == NULL)
82 if ((namemap = ossl_namemap_stored(libctx)) == NULL
83 || (id = ossl_namemap_add(namemap, name)) == 0)
86 (void)ossl_method_store_fetch(store, id, propquery, &method);
89 && !methdata->refcnt_up_method(method)) {
95 static int put_method_in_store(OPENSSL_CTX *libctx, void *store,
96 void *method, const char *name,
97 const char *propdef, void *data)
99 struct method_data_st *methdata = data;
100 OSSL_NAMEMAP *namemap;
103 if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL
104 || (id = ossl_namemap_add(namemap, name)) == 0)
108 && (store = get_default_method_store(libctx)) == NULL)
111 if (methdata->refcnt_up_method(method)
112 && ossl_method_store_add(store, id, propdef, method,
113 methdata->destruct_method))
118 static void *construct_method(const char *name, const OSSL_DISPATCH *fns,
119 OSSL_PROVIDER *prov, void *data)
121 struct method_data_st *methdata = data;
123 return methdata->method_from_dispatch(fns, prov);
126 static void destruct_method(void *method, void *data)
128 struct method_data_st *methdata = data;
130 methdata->destruct_method(method);
133 void *evp_generic_fetch(OPENSSL_CTX *libctx, int operation_id,
134 const char *name, const char *properties,
135 void *(*new_method)(const OSSL_DISPATCH *fns,
136 OSSL_PROVIDER *prov),
137 int (*upref_method)(void *),
138 void (*free_method)(void *))
140 OSSL_METHOD_STORE *store = get_default_method_store(libctx);
141 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
145 if (store == NULL || namemap == NULL)
148 if ((id = ossl_namemap_number(namemap, name)) == 0
149 || !ossl_method_store_cache_get(store, id, properties, &method)) {
150 OSSL_METHOD_CONSTRUCT_METHOD mcm = {
151 alloc_tmp_method_store,
152 dealloc_tmp_method_store,
153 get_method_from_store,
158 struct method_data_st mcmdata;
161 mcmdata.libctx = libctx;
162 mcmdata.method_from_dispatch = new_method;
163 mcmdata.destruct_method = free_method;
164 mcmdata.refcnt_up_method = upref_method;
165 mcmdata.destruct_method = free_method;
166 method = ossl_method_construct(libctx, operation_id, name,
167 properties, 0 /* !force_cache */,
169 ossl_method_store_cache_set(store, id, properties, method);
171 upref_method(method);
177 int EVP_set_default_properties(OPENSSL_CTX *libctx, const char *propq)
179 OSSL_METHOD_STORE *store = get_default_method_store(libctx);
182 return ossl_method_store_set_global_properties(store, propq);
183 EVPerr(EVP_F_EVP_SET_DEFAULT_PROPERTIES, ERR_R_INTERNAL_ERROR);