--- /dev/null
+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <string.h>
+#include <openssl/trace.h>
+#include <openssl/err.h>
+#include <openssl/conf.h>
+#include <openssl/safestack.h>
+#include "internal/provider.h"
+
+/* PROVIDER config module */
+
+DEFINE_STACK_OF(OSSL_PROVIDER)
+static STACK_OF(OSSL_PROVIDER) *activated_providers = NULL;
+
+static const char *skip_dot(const char *name)
+{
+ const char *p = strchr(name, '.');
+
+ if (p != NULL)
+ return p + 1;
+ return name;
+}
+
+static int provider_conf_params(OSSL_PROVIDER *prov,
+ const char *name, const char *value,
+ const CONF *cnf)
+{
+ STACK_OF(CONF_VALUE) *sect;
+ int ok = 1;
+
+ OSSL_TRACE2(PROVIDER_CONF, "PROVIDER conf: %s = %s\n", name, value);
+
+ sect = NCONF_get_section(cnf, value);
+ if (sect != NULL) {
+ int i;
+ char buffer[512];
+ size_t buffer_len = 0;
+
+ if (name != NULL) {
+ OPENSSL_strlcpy(buffer, name, sizeof(buffer));
+ OPENSSL_strlcat(buffer, ".", sizeof(buffer));
+ buffer_len = strlen(buffer);
+ }
+
+ for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
+ CONF_VALUE *sectconf = sk_CONF_VALUE_value(sect, i);
+
+ if (buffer_len + strlen(sectconf->name) >= sizeof(buffer))
+ return 0;
+ buffer[buffer_len] = '\0';
+ OPENSSL_strlcat(buffer, sectconf->name, sizeof(buffer));
+ if (!provider_conf_params(prov, buffer, sectconf->value, cnf))
+ return 0;
+ }
+ } else {
+ ok = ossl_provider_add_parameter(prov, name, value);
+ }
+
+ return ok;
+}
+
+static int provider_conf_load(OPENSSL_CTX *libctx, const char *name,
+ const char *value, const CONF *cnf)
+{
+ int i;
+ STACK_OF(CONF_VALUE) *ecmds;
+ int soft = 0;
+ OSSL_PROVIDER *prov = NULL;
+ const char *path = NULL;
+ long activate = 0;
+ int ok = 0;
+
+ name = skip_dot(name);
+ OSSL_TRACE1(PROVIDER_CONF, "Configuring provider %s\n", name);
+ /* Value is a section containing PROVIDER commands */
+ ecmds = NCONF_get_section(cnf, value);
+
+ if (!ecmds) {
+ CRYPTOerr(CRYPTO_F_PROVIDER_CONF_LOAD, CRYPTO_R_PROVIDER_SECTION_ERROR);
+ return 0;
+ }
+
+ /* Find the needed data first */
+ for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
+ CONF_VALUE *ecmd = sk_CONF_VALUE_value(ecmds, i);
+ const char *confname = skip_dot(ecmd->name);
+ const char *confvalue = ecmd->value;
+
+ OSSL_TRACE2(PROVIDER_CONF, "PROVIDER conf: %s = %s\n",
+ confname, confvalue);
+
+ /* First handle some special pseudo confs */
+
+ /* Override provider name to use */
+ if (strcmp(confname, "identity") == 0)
+ name = confvalue;
+ else if (strcmp(confname, "soft_load") == 0)
+ soft = 1;
+ /* Load a dynamic PROVIDER */
+ else if (strcmp(confname, "module") == 0)
+ path = confvalue;
+ else if (strcmp(confname, "activate") == 0)
+ activate = 1;
+ }
+
+ prov = ossl_provider_new(libctx, name, NULL);
+ if (prov == NULL) {
+ if (soft)
+ ERR_clear_error();
+ return 0;
+ }
+
+ if (path != NULL)
+ ossl_provider_set_module_path(prov, path);
+
+ ok = provider_conf_params(prov, NULL, value, cnf);
+
+ if (ok && activate) {
+ if (!ossl_provider_activate(prov)) {
+ ok = 0;
+ } else {
+ if (activated_providers == NULL)
+ activated_providers = sk_OSSL_PROVIDER_new_null();
+ sk_OSSL_PROVIDER_push(activated_providers, prov);
+ ok = 1;
+ }
+ }
+
+ if (!(activate && ok))
+ ossl_provider_free(prov);
+
+ return ok;
+}
+
+static int provider_conf_init(CONF_IMODULE *md, const CONF *cnf)
+{
+ STACK_OF(CONF_VALUE) *elist;
+ CONF_VALUE *cval;
+ int i;
+
+ OSSL_TRACE2(PROVIDER_CONF, "Loading provider module: name %s, value %s\n",
+ CONF_imodule_get_name(md), CONF_imodule_get_value(md));
+ /* Value is a section containing PROVIDERs to configure */
+ elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
+
+ if (!elist) {
+ CRYPTOerr(CRYPTO_F_PROVIDER_CONF_INIT,
+ CRYPTO_R_PROVIDER_SECTION_ERROR);
+ return 0;
+ }
+
+ for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
+ cval = sk_CONF_VALUE_value(elist, i);
+ if (!provider_conf_load(NULL, cval->name, cval->value, cnf))
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static void provider_conf_deinit(CONF_IMODULE *md)
+{
+ sk_OSSL_PROVIDER_pop_free(activated_providers, ossl_provider_free);
+ activated_providers = NULL;
+ OSSL_TRACE(PROVIDER_CONF, "Cleaned up providers\n");
+}
+
+void ossl_provider_add_conf_module(void)
+{
+ CONF_module_add("providers", provider_conf_init, provider_conf_deinit);
+}
projects / oweals / openssl.git / commitdiff