2 * Copyright 2019-2021 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/trace.h>
12 #include <openssl/err.h>
13 #include <openssl/conf.h>
14 #include <openssl/safestack.h>
15 #include "internal/provider.h"
16 #include "internal/cryptlib.h"
18 DEFINE_STACK_OF(OSSL_PROVIDER)
20 /* PROVIDER config module */
23 STACK_OF(OSSL_PROVIDER) *activated_providers;
24 } PROVIDER_CONF_GLOBAL;
26 static void *prov_conf_ossl_ctx_new(OSSL_LIB_CTX *libctx)
28 PROVIDER_CONF_GLOBAL *pcgbl = OPENSSL_zalloc(sizeof(*pcgbl));
36 static void prov_conf_ossl_ctx_free(void *vpcgbl)
38 PROVIDER_CONF_GLOBAL *pcgbl = vpcgbl;
40 sk_OSSL_PROVIDER_pop_free(pcgbl->activated_providers,
43 OSSL_TRACE(CONF, "Cleaned up providers\n");
47 static const OSSL_LIB_CTX_METHOD provider_conf_ossl_ctx_method = {
48 /* Must be freed before the provider store is freed */
49 OSSL_LIB_CTX_METHOD_PRIORITY_2,
50 prov_conf_ossl_ctx_new,
51 prov_conf_ossl_ctx_free,
54 static const char *skip_dot(const char *name)
56 const char *p = strchr(name, '.');
63 static int provider_conf_params(OSSL_PROVIDER *prov,
64 const char *name, const char *value,
67 STACK_OF(CONF_VALUE) *sect;
70 sect = NCONF_get_section(cnf, value);
74 size_t buffer_len = 0;
76 OSSL_TRACE1(CONF, "Provider params: start section %s\n", value);
79 OPENSSL_strlcpy(buffer, name, sizeof(buffer));
80 OPENSSL_strlcat(buffer, ".", sizeof(buffer));
81 buffer_len = strlen(buffer);
84 for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
85 CONF_VALUE *sectconf = sk_CONF_VALUE_value(sect, i);
87 if (buffer_len + strlen(sectconf->name) >= sizeof(buffer))
89 buffer[buffer_len] = '\0';
90 OPENSSL_strlcat(buffer, sectconf->name, sizeof(buffer));
91 if (!provider_conf_params(prov, buffer, sectconf->value, cnf))
95 OSSL_TRACE1(CONF, "Provider params: finish section %s\n", value);
97 OSSL_TRACE2(CONF, "Provider params: %s = %s\n", name, value);
98 ok = ossl_provider_add_parameter(prov, name, value);
104 static int provider_conf_load(OSSL_LIB_CTX *libctx, const char *name,
105 const char *value, const CONF *cnf)
108 STACK_OF(CONF_VALUE) *ecmds;
110 OSSL_PROVIDER *prov = NULL;
111 const char *path = NULL;
114 PROVIDER_CONF_GLOBAL *pcgbl
115 = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_CONF_INDEX,
116 &provider_conf_ossl_ctx_method);
118 name = skip_dot(name);
119 OSSL_TRACE1(CONF, "Configuring provider %s\n", name);
120 /* Value is a section containing PROVIDER commands */
121 ecmds = NCONF_get_section(cnf, value);
124 ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
125 "section=%s not found", value);
129 /* Find the needed data first */
130 for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
131 CONF_VALUE *ecmd = sk_CONF_VALUE_value(ecmds, i);
132 const char *confname = skip_dot(ecmd->name);
133 const char *confvalue = ecmd->value;
135 OSSL_TRACE2(CONF, "Provider command: %s = %s\n",
136 confname, confvalue);
138 /* First handle some special pseudo confs */
140 /* Override provider name to use */
141 if (strcmp(confname, "identity") == 0)
143 else if (strcmp(confname, "soft_load") == 0)
145 /* Load a dynamic PROVIDER */
146 else if (strcmp(confname, "module") == 0)
148 else if (strcmp(confname, "activate") == 0)
152 prov = ossl_provider_find(libctx, name, 1);
154 prov = ossl_provider_new(libctx, name, NULL, 1);
162 ossl_provider_set_module_path(prov, path);
164 ok = provider_conf_params(prov, NULL, value, cnf);
166 if (ok && activate) {
167 if (!ossl_provider_activate(prov, 0, 1)) {
170 if (pcgbl->activated_providers == NULL)
171 pcgbl->activated_providers = sk_OSSL_PROVIDER_new_null();
172 sk_OSSL_PROVIDER_push(pcgbl->activated_providers, prov);
177 if (!(activate && ok))
178 ossl_provider_free(prov);
183 static int provider_conf_init(CONF_IMODULE *md, const CONF *cnf)
185 STACK_OF(CONF_VALUE) *elist;
189 OSSL_TRACE1(CONF, "Loading providers module: section %s\n",
190 CONF_imodule_get_value(md));
192 /* Value is a section containing PROVIDERs to configure */
193 elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
196 ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR);
200 for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
201 cval = sk_CONF_VALUE_value(elist, i);
202 if (!provider_conf_load(cnf->libctx, cval->name, cval->value, cnf))
209 void ossl_provider_add_conf_module(void)
211 OSSL_TRACE(CONF, "Adding config module 'providers'\n");
212 CONF_module_add("providers", provider_conf_init, NULL);