blob: d2a07def4e6335a7a5c7d9d62099808caf8e89e0 (
plain)
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
|
/*
Copyright (C) 2024 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "info_file_checker.h"
#include <dcp/filesystem.h>
#include "i18n.h"
using std::shared_ptr;
InfoFileChecker::InfoFileChecker(shared_ptr<InfoFileHandle> file)
: _file(file)
, _next(_file)
{
}
void
InfoFileChecker::check(int64_t offset, uint8_t const* data, int length)
{
while (_next && offset <= static_cast<int64_t>(_next->offset) && _next->offset < static_cast<uint64_t>(offset + length)) {
auto hash_start_offset = _next->offset - offset;
auto hash_length = std::min(_next->size, length - hash_start_offset);
_digester.add(data + hash_start_offset, hash_length);
_next->offset += hash_length;
_next->size -= hash_length;
if (_next->size == 0) {
if (_digester.get_vector() != _next->hash) {
throw EncodeError(_("File on disk is corrupted"));
}
_next = boost::none;
try {
_next = J2KFrameInfo(_file);
} catch (...) {}
_digester = Digester();
}
}
}
|
