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Modules/openssl.include/openssl/provider.h

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+/*
+ * Copyright 2019-2025 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
+ */
+
+#ifndef OPENSSL_PROVIDER_H
+# define OPENSSL_PROVIDER_H
+# pragma once
+
+# include <openssl/core.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* Set and Get a library context search path */
+int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *, const char *path);
+const char *OSSL_PROVIDER_get0_default_search_path(OSSL_LIB_CTX *libctx);
+
+/* Load and unload a provider */
+OSSL_PROVIDER *OSSL_PROVIDER_load(OSSL_LIB_CTX *, const char *name);
+OSSL_PROVIDER *OSSL_PROVIDER_load_ex(OSSL_LIB_CTX *, const char *name,
+                                     OSSL_PARAM *params);
+OSSL_PROVIDER *OSSL_PROVIDER_try_load(OSSL_LIB_CTX *, const char *name,
+                                      int retain_fallbacks);
+OSSL_PROVIDER *OSSL_PROVIDER_try_load_ex(OSSL_LIB_CTX *, const char *name,
+                                         OSSL_PARAM *params,
+                                         int retain_fallbacks);
+int OSSL_PROVIDER_unload(OSSL_PROVIDER *prov);
+int OSSL_PROVIDER_available(OSSL_LIB_CTX *, const char *name);
+int OSSL_PROVIDER_do_all(OSSL_LIB_CTX *ctx,
+                         int (*cb)(OSSL_PROVIDER *provider, void *cbdata),
+                         void *cbdata);
+
+const OSSL_PARAM *OSSL_PROVIDER_gettable_params(const OSSL_PROVIDER *prov);
+int OSSL_PROVIDER_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[]);
+int OSSL_PROVIDER_self_test(const OSSL_PROVIDER *prov);
+int OSSL_PROVIDER_get_capabilities(const OSSL_PROVIDER *prov,
+                                   const char *capability,
+                                   OSSL_CALLBACK *cb,
+                                   void *arg);
+
+/*-
+ * Provider configuration parameters are normally set in the configuration file,
+ * but can also be set early in the main program before a provider is in use by
+ * multiple threads.
+ *
+ * Only UTF8-string values are supported.
+ */
+int OSSL_PROVIDER_add_conf_parameter(OSSL_PROVIDER *prov, const char *name,
+                                     const char *value);
+/*
+ * Retrieves any of the requested configuration parameters for the given
+ * provider that were set in the configuration file or via the above
+ * OSSL_PROVIDER_add_parameter() function.
+ *
+ * The |params| array elements MUST have type OSSL_PARAM_UTF8_PTR, values are
+ * returned by reference, not as copies.
+ */
+int OSSL_PROVIDER_get_conf_parameters(const OSSL_PROVIDER *prov,
+                                      OSSL_PARAM params[]);
+/*
+ * Parse a provider configuration parameter as a boolean value,
+ * or return a default value if unable to retrieve the parameter.
+ * Values like "1", "yes", "true", ... are true (nonzero).
+ * Values like "0", "no", "false", ... are false (zero).
+ */
+int OSSL_PROVIDER_conf_get_bool(const OSSL_PROVIDER *prov,
+                                const char *name, int defval);
+
+const OSSL_ALGORITHM *OSSL_PROVIDER_query_operation(const OSSL_PROVIDER *prov,
+                                                    int operation_id,
+                                                    int *no_cache);
+void OSSL_PROVIDER_unquery_operation(const OSSL_PROVIDER *prov,
+                                     int operation_id, const OSSL_ALGORITHM *algs);
+void *OSSL_PROVIDER_get0_provider_ctx(const OSSL_PROVIDER *prov);
+const OSSL_DISPATCH *OSSL_PROVIDER_get0_dispatch(const OSSL_PROVIDER *prov);
+
+/* Add a built in providers */
+int OSSL_PROVIDER_add_builtin(OSSL_LIB_CTX *, const char *name,
+                              OSSL_provider_init_fn *init_fn);
+
+/* Information */
+const char *OSSL_PROVIDER_get0_name(const OSSL_PROVIDER *prov);
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif