1 /*
2   Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
3 
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License, version 2.0,
6   as published by the Free Software Foundation.
7 
8   This program is also distributed with certain software (including
9   but not limited to OpenSSL) that is licensed under separate terms,
10   as designated in a particular file or component or in included license
11   documentation.  The authors of MySQL hereby grant you an additional
12   permission to link the program and your derivative works with the
13   separately licensed software that they have included with MySQL.
14 
15   This program is distributed in the hope that it will be useful,
16   but WITHOUT ANY WARRANTY; without even the implied warranty of
17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18   GNU General Public License for more details.
19 
20   You should have received a copy of the GNU General Public License
21   along with this program; if not, write to the Free Software
22   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
23 */
24 
25 #ifndef MYSQL_HARNESS_KEYRING_FILE_INCLUDED
26 #define MYSQL_HARNESS_KEYRING_FILE_INCLUDED
27 
28 #include <iostream>
29 #include "keyring_memory.h"
30 
31 namespace mysql_harness {
32 
33 /**
34  * KeyringFile class.
35  *
36  * Implements Keyring interface and provides additional methods for loading and
37  * saving keyring to file.
38  */
39 class HARNESS_EXPORT KeyringFile : public KeyringMemory {
40  public:
41   KeyringFile() = default;
42 
43   /**
44    * Sets additional data to be stored with the file but will not be
45    * encrypted.
46    *
47    * @param[in] data to store in header
48    */
49   void set_header(const std::string &data);
50 
51   /**
52    * Saves keyring to file.
53    *
54    * @param[in] file_name Keyring file name.
55    * @param[in] key Key used for encryption.
56    *
57    * @exception std::exception Saving to file failed.
58    */
59   void save(const std::string &file_name, const std::string &key) const;
60 
61   /**
62    * Load keyring from file.
63    *
64    * @param[in] file_name Keyring file name.
65    * @param[in] key Key used for decryption.
66    *
67    * @exception std::exception Loading from file failed.
68    */
69   void load(const std::string &file_name, const std::string &key);
70 
71   /**
72    * Read header data from file.
73    *
74    * @param[in] file_name Keyring file name.
75    *
76    * @exception std::exception Loading from file failed.
77    */
78   std::string read_header(const std::string &file_name);
79 
80  private:
81   std::string header_;
82 };
83 
84 }  // namespace mysql_harness
85 
86 #endif  // MYSQL_HARNESS_KEYRING_FILE_INCLUDED
87