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/trace.h>
12 #include <openssl/err.h>
13 #include <openssl/conf.h>
14 #include <openssl/safestack.h>
15 #include "internal/provider.h"
17 /* PROVIDER config module */
19 DEFINE_STACK_OF(OSSL_PROVIDER)
20 static STACK_OF(OSSL_PROVIDER) *activated_providers = NULL;
22 static const char *skip_dot(const char *name)
24 const char *p = strchr(name, '.');
31 static int provider_conf_params(OSSL_PROVIDER *prov,
32 const char *name, const char *value,
35 STACK_OF(CONF_VALUE) *sect;
38 sect = NCONF_get_section(cnf, value);
42 size_t buffer_len = 0;
44 OSSL_TRACE1(CONF, "Provider params: start section %s\n", value);
47 OPENSSL_strlcpy(buffer, name, sizeof(buffer));
48 OPENSSL_strlcat(buffer, ".", sizeof(buffer));
49 buffer_len = strlen(buffer);
52 for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
53 CONF_VALUE *sectconf = sk_CONF_VALUE_value(sect, i);
55 if (buffer_len + strlen(sectconf->name) >= sizeof(buffer))
57 buffer[buffer_len] = '\0';
58 OPENSSL_strlcat(buffer, sectconf->name, sizeof(buffer));
59 if (!provider_conf_params(prov, buffer, sectconf->value, cnf))
63 OSSL_TRACE1(CONF, "Provider params: finish section %s\n", value);
65 OSSL_TRACE2(CONF, "Provider params: %s = %s\n", name, value);
66 ok = ossl_provider_add_parameter(prov, name, value);
72 static int provider_conf_load(OPENSSL_CTX *libctx, const char *name,
73 const char *value, const CONF *cnf)
76 STACK_OF(CONF_VALUE) *ecmds;
78 OSSL_PROVIDER *prov = NULL;
79 const char *path = NULL;
83 name = skip_dot(name);
84 OSSL_TRACE1(CONF, "Configuring provider %s\n", name);
85 /* Value is a section containing PROVIDER commands */
86 ecmds = NCONF_get_section(cnf, value);
89 CRYPTOerr(CRYPTO_F_PROVIDER_CONF_LOAD, CRYPTO_R_PROVIDER_SECTION_ERROR);
93 /* Find the needed data first */
94 for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
95 CONF_VALUE *ecmd = sk_CONF_VALUE_value(ecmds, i);
96 const char *confname = skip_dot(ecmd->name);
97 const char *confvalue = ecmd->value;
99 OSSL_TRACE2(CONF, "Provider command: %s = %s\n",
100 confname, confvalue);
102 /* First handle some special pseudo confs */
104 /* Override provider name to use */
105 if (strcmp(confname, "identity") == 0)
107 else if (strcmp(confname, "soft_load") == 0)
109 /* Load a dynamic PROVIDER */
110 else if (strcmp(confname, "module") == 0)
112 else if (strcmp(confname, "activate") == 0)
116 prov = ossl_provider_new(libctx, name, NULL);
124 ossl_provider_set_module_path(prov, path);
126 ok = provider_conf_params(prov, NULL, value, cnf);
128 if (ok && activate) {
129 if (!ossl_provider_activate(prov)) {
132 if (activated_providers == NULL)
133 activated_providers = sk_OSSL_PROVIDER_new_null();
134 sk_OSSL_PROVIDER_push(activated_providers, prov);
139 if (!(activate && ok))
140 ossl_provider_free(prov);
145 static int provider_conf_init(CONF_IMODULE *md, const CONF *cnf)
147 STACK_OF(CONF_VALUE) *elist;
151 OSSL_TRACE1(CONF, "Loading providers module: section %s\n",
152 CONF_imodule_get_value(md));
154 /* Value is a section containing PROVIDERs to configure */
155 elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
158 CRYPTOerr(CRYPTO_F_PROVIDER_CONF_INIT,
159 CRYPTO_R_PROVIDER_SECTION_ERROR);
163 for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
164 cval = sk_CONF_VALUE_value(elist, i);
165 if (!provider_conf_load(NULL, cval->name, cval->value, cnf))
173 static void provider_conf_deinit(CONF_IMODULE *md)
175 sk_OSSL_PROVIDER_pop_free(activated_providers, ossl_provider_free);
176 activated_providers = NULL;
177 OSSL_TRACE(CONF, "Cleaned up providers\n");
180 void ossl_provider_add_conf_module(void)
182 OSSL_TRACE(CONF, "Adding config module 'providers'\n");
183 CONF_module_add("providers", provider_conf_init, provider_conf_deinit);