2019-03-20 23:53:19 +08:00
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/*
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2021-03-11 21:27:36 +08:00
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* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
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2019-03-20 23:53:19 +08:00
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <openssl/trace.h>
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#include <openssl/err.h>
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#include <openssl/conf.h>
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#include <openssl/safestack.h>
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#include "internal/provider.h"
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2021-04-26 21:58:40 +08:00
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#include "internal/cryptlib.h"
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2019-03-20 23:53:19 +08:00
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2019-12-20 06:30:24 +08:00
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DEFINE_STACK_OF(OSSL_PROVIDER)
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2019-03-20 23:53:19 +08:00
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/* PROVIDER config module */
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2021-04-26 21:58:40 +08:00
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typedef struct {
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STACK_OF(OSSL_PROVIDER) *activated_providers;
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} PROVIDER_CONF_GLOBAL;
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static void *prov_conf_ossl_ctx_new(OSSL_LIB_CTX *libctx)
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{
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PROVIDER_CONF_GLOBAL *pcgbl = OPENSSL_zalloc(sizeof(*pcgbl));
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if (pcgbl == NULL)
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return NULL;
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return pcgbl;
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}
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static void prov_conf_ossl_ctx_free(void *vpcgbl)
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{
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PROVIDER_CONF_GLOBAL *pcgbl = vpcgbl;
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sk_OSSL_PROVIDER_pop_free(pcgbl->activated_providers,
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ossl_provider_free);
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OSSL_TRACE(CONF, "Cleaned up providers\n");
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OPENSSL_free(pcgbl);
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}
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static const OSSL_LIB_CTX_METHOD provider_conf_ossl_ctx_method = {
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2021-04-26 18:35:17 +08:00
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/* Must be freed before the provider store is freed */
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2021-04-29 23:37:42 +08:00
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OSSL_LIB_CTX_METHOD_PRIORITY_2,
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prov_conf_ossl_ctx_new,
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prov_conf_ossl_ctx_free,
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};
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2019-03-20 23:53:19 +08:00
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static const char *skip_dot(const char *name)
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{
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const char *p = strchr(name, '.');
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if (p != NULL)
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return p + 1;
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return name;
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}
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static int provider_conf_params(OSSL_PROVIDER *prov,
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const char *name, const char *value,
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const CONF *cnf)
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{
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STACK_OF(CONF_VALUE) *sect;
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int ok = 1;
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sect = NCONF_get_section(cnf, value);
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if (sect != NULL) {
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int i;
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char buffer[512];
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size_t buffer_len = 0;
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE1(CONF, "Provider params: start section %s\n", value);
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2019-03-20 23:53:19 +08:00
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if (name != NULL) {
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OPENSSL_strlcpy(buffer, name, sizeof(buffer));
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OPENSSL_strlcat(buffer, ".", sizeof(buffer));
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buffer_len = strlen(buffer);
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}
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for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
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CONF_VALUE *sectconf = sk_CONF_VALUE_value(sect, i);
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if (buffer_len + strlen(sectconf->name) >= sizeof(buffer))
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return 0;
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buffer[buffer_len] = '\0';
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OPENSSL_strlcat(buffer, sectconf->name, sizeof(buffer));
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if (!provider_conf_params(prov, buffer, sectconf->value, cnf))
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return 0;
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}
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE1(CONF, "Provider params: finish section %s\n", value);
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2019-03-20 23:53:19 +08:00
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} else {
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE2(CONF, "Provider params: %s = %s\n", name, value);
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2019-03-20 23:53:19 +08:00
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ok = ossl_provider_add_parameter(prov, name, value);
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}
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return ok;
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}
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2020-10-15 17:55:50 +08:00
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static int provider_conf_load(OSSL_LIB_CTX *libctx, const char *name,
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2019-03-20 23:53:19 +08:00
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const char *value, const CONF *cnf)
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{
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int i;
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STACK_OF(CONF_VALUE) *ecmds;
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int soft = 0;
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OSSL_PROVIDER *prov = NULL;
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const char *path = NULL;
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long activate = 0;
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int ok = 0;
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2021-04-26 21:58:40 +08:00
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PROVIDER_CONF_GLOBAL *pcgbl
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= ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_CONF_INDEX,
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&provider_conf_ossl_ctx_method);
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2019-03-20 23:53:19 +08:00
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name = skip_dot(name);
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE1(CONF, "Configuring provider %s\n", name);
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2019-03-20 23:53:19 +08:00
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/* Value is a section containing PROVIDER commands */
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ecmds = NCONF_get_section(cnf, value);
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if (!ecmds) {
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2020-11-04 23:14:00 +08:00
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ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR,
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"section=%s not found", value);
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2019-03-20 23:53:19 +08:00
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return 0;
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}
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/* Find the needed data first */
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for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
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CONF_VALUE *ecmd = sk_CONF_VALUE_value(ecmds, i);
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const char *confname = skip_dot(ecmd->name);
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const char *confvalue = ecmd->value;
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE2(CONF, "Provider command: %s = %s\n",
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2019-03-20 23:53:19 +08:00
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confname, confvalue);
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/* First handle some special pseudo confs */
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/* Override provider name to use */
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if (strcmp(confname, "identity") == 0)
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name = confvalue;
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else if (strcmp(confname, "soft_load") == 0)
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soft = 1;
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/* Load a dynamic PROVIDER */
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else if (strcmp(confname, "module") == 0)
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path = confvalue;
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else if (strcmp(confname, "activate") == 0)
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activate = 1;
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}
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2019-07-30 23:42:53 +08:00
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prov = ossl_provider_find(libctx, name, 1);
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2019-07-15 17:55:33 +08:00
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if (prov == NULL)
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2019-07-30 23:42:53 +08:00
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prov = ossl_provider_new(libctx, name, NULL, 1);
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2019-03-20 23:53:19 +08:00
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if (prov == NULL) {
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if (soft)
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ERR_clear_error();
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return 0;
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}
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if (path != NULL)
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ossl_provider_set_module_path(prov, path);
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ok = provider_conf_params(prov, NULL, value, cnf);
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if (ok && activate) {
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2021-04-29 23:37:42 +08:00
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if (!ossl_provider_activate(prov, 0, 1)) {
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2019-03-20 23:53:19 +08:00
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ok = 0;
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} else {
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2021-04-26 21:58:40 +08:00
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if (pcgbl->activated_providers == NULL)
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pcgbl->activated_providers = sk_OSSL_PROVIDER_new_null();
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sk_OSSL_PROVIDER_push(pcgbl->activated_providers, prov);
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2019-03-20 23:53:19 +08:00
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ok = 1;
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}
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}
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if (!(activate && ok))
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ossl_provider_free(prov);
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return ok;
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}
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static int provider_conf_init(CONF_IMODULE *md, const CONF *cnf)
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{
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STACK_OF(CONF_VALUE) *elist;
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CONF_VALUE *cval;
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int i;
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE1(CONF, "Loading providers module: section %s\n",
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CONF_imodule_get_value(md));
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2019-03-20 23:53:19 +08:00
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/* Value is a section containing PROVIDERs to configure */
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elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
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if (!elist) {
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2020-11-04 19:23:19 +08:00
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ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR);
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2019-03-20 23:53:19 +08:00
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return 0;
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}
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for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
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cval = sk_CONF_VALUE_value(elist, i);
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2021-05-26 02:48:41 +08:00
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if (!provider_conf_load(NCONF_get0_libctx((CONF *)cnf),
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cval->name, cval->value, cnf))
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2019-03-20 23:53:19 +08:00
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return 0;
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}
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return 1;
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}
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void ossl_provider_add_conf_module(void)
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{
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2019-04-05 16:58:16 +08:00
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OSSL_TRACE(CONF, "Adding config module 'providers'\n");
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2021-04-26 21:58:40 +08:00
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CONF_module_add("providers", provider_conf_init, NULL);
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2019-03-20 23:53:19 +08:00
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}
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