+/*
+ * Copyright 2020 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 "apps.h"
+#include <openssl/err.h>
+#include <openssl/provider.h>
+
+/*
+ * See comments in opt_verify for explanation of this.
+ */
+enum prov_range { OPT_PROV_ENUM };
+
+static int opt_provider_load(const char *provider)
+{
+ OSSL_PROVIDER *prov;
+
+ prov = OSSL_PROVIDER_load(NULL, provider);
+ if (prov == NULL) {
+ opt_printf_stderr("%s: unable to load provider %s\n",
+ opt_getprog(), provider);
+ return 0;
+ }
+ return 1;
+}
+
+static int opt_provider_path(const char *path)
+{
+ if (path != NULL && *path == '\0')
+ path = NULL;
+ return OSSL_PROVIDER_set_default_search_path(NULL, path);
+}
+
+int opt_provider(int opt)
+{
+ switch ((enum prov_range)opt) {
+ case OPT_PROV__FIRST:
+ case OPT_PROV__LAST:
+ return 1;
+ case OPT_PROV_PROVIDER:
+ return opt_provider_load(opt_arg());
+ case OPT_PROV_PROVIDER_PATH:
+ return opt_provider_path(opt_arg());
+ }
+ return 0;
+}