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+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_JSON_TOKEN_H
+#define GRPC_CORE_LIB_SECURITY_JSON_TOKEN_H
+
+#include <grpc/support/slice.h>
+#include <openssl/rsa.h>
+
+#include "src/core/lib/json/json.h"
+
+/* --- Constants. --- */
+
+#define GRPC_JWT_OAUTH2_AUDIENCE "https://www.googleapis.com/oauth2/v3/token"
+
+#define GRPC_AUTH_JSON_TYPE_INVALID "invalid"
+#define GRPC_AUTH_JSON_TYPE_SERVICE_ACCOUNT "service_account"
+#define GRPC_AUTH_JSON_TYPE_AUTHORIZED_USER "authorized_user"
+
+/* --- auth_json_key parsing. --- */
+
+typedef struct {
+ const char *type;
+ char *private_key_id;
+ char *client_id;
+ char *client_email;
+ RSA *private_key;
+} grpc_auth_json_key;
+
+/* Returns 1 if the object is valid, 0 otherwise. */
+int grpc_auth_json_key_is_valid(const grpc_auth_json_key *json_key);
+
+/* Creates a json_key object from string. Returns an invalid object if a parsing
+ error has been encountered. */
+grpc_auth_json_key grpc_auth_json_key_create_from_string(
+ const char *json_string);
+
+/* Creates a json_key object from parsed json. Returns an invalid object if a
+ parsing error has been encountered. */
+grpc_auth_json_key grpc_auth_json_key_create_from_json(const grpc_json *json);
+
+/* Destructs the object. */
+void grpc_auth_json_key_destruct(grpc_auth_json_key *json_key);
+
+/* --- json token encoding and signing. --- */
+
+/* Caller is responsible for calling gpr_free on the returned value. May return
+ NULL on invalid input. The scope parameter may be NULL. */
+char *grpc_jwt_encode_and_sign(const grpc_auth_json_key *json_key,
+ const char *audience,
+ gpr_timespec token_lifetime, const char *scope);
+
+/* Override encode_and_sign function for testing. */
+typedef char *(*grpc_jwt_encode_and_sign_override)(
+ const grpc_auth_json_key *json_key, const char *audience,
+ gpr_timespec token_lifetime, const char *scope);
+
+/* Set a custom encode_and_sign override for testing. */
+void grpc_jwt_encode_and_sign_set_override(
+ grpc_jwt_encode_and_sign_override func);
+
+/* --- auth_refresh_token parsing. --- */
+
+typedef struct {
+ const char *type;
+ char *client_id;
+ char *client_secret;
+ char *refresh_token;
+} grpc_auth_refresh_token;
+
+/* Returns 1 if the object is valid, 0 otherwise. */
+int grpc_auth_refresh_token_is_valid(
+ const grpc_auth_refresh_token *refresh_token);
+
+/* Creates a refresh token object from string. Returns an invalid object if a
+ parsing error has been encountered. */
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_string(
+ const char *json_string);
+
+/* Creates a refresh token object from parsed json. Returns an invalid object if
+ a parsing error has been encountered. */
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_json(
+ const grpc_json *json);
+
+/* Destructs the object. */
+void grpc_auth_refresh_token_destruct(grpc_auth_refresh_token *refresh_token);
+
+#endif /* GRPC_CORE_LIB_SECURITY_JSON_TOKEN_H */