1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*************************************************************************/
/* file_access_encrypted.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef FILE_ACCESS_ENCRYPTED_H
#define FILE_ACCESS_ENCRYPTED_H
#include "os/file_access.h"
class FileAccessEncrypted : public FileAccess {
public:
enum Mode {
MODE_READ,
MODE_WRITE_AES256,
MODE_MAX
};
private:
Mode mode;
Vector<uint8_t> key;
bool writing;
FileAccess *file;
size_t base;
size_t length;
Vector<uint8_t> data;
mutable size_t pos;
mutable bool eofed;
public:
Error open_and_parse(FileAccess *p_base,const Vector<uint8_t>& p_key,Mode p_mode);
Error open_and_parse_password(FileAccess *p_base,const String& p_key,Mode p_mode);
virtual Error _open(const String& p_path, int p_mode_flags); ///< open a file
virtual void close(); ///< close a file
virtual bool is_open() const; ///< true when file is open
virtual void seek(size_t p_position); ///< seek to a given position
virtual void seek_end(int64_t p_position=0); ///< seek from the end of file
virtual size_t get_pos() const; ///< get position in the file
virtual size_t get_len() const; ///< get size of the file
virtual bool eof_reached() const; ///< reading passed EOF
virtual uint8_t get_8() const; ///< get a byte
virtual int get_buffer(uint8_t *p_dst, int p_length) const;
virtual Error get_error() const; ///< get last error
virtual void store_8(uint8_t p_dest); ///< store a byte
virtual void store_buffer(const uint8_t *p_src,int p_length); ///< store an array of bytes
virtual bool file_exists(const String& p_name); ///< return true if a file exists
virtual uint64_t _get_modified_time(const String& p_file);
FileAccessEncrypted();
~FileAccessEncrypted();
};
#endif // FILE_ACCESS_ENCRYPTED_H
|