1 /*
2 * Copyright (C) 2018 Rafael Ostertag
3 *
4 * This file is part of YAPET.
5 *
6 * YAPET is free software: you can redistribute it and/or modify it under the
7 * terms of the GNU General Public License as published by the Free Software
8 * Foundation, either version 3 of the License, or (at your option) any later
9 * version.
10 *
11 * YAPET is distributed in the hope that it will be useful, but WITHOUT ANY
12 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14 * details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * YAPET. If not, see <http://www.gnu.org/licenses/>.
18 *
19 * Additional permission under GNU GPL version 3 section 7
20 *
21 * If you modify this program, or any covered work, by linking or combining it
22 * with the OpenSSL project's OpenSSL library (or a modified version of that
23 * library), containing parts covered by the terms of the OpenSSL or SSLeay
24 * licenses, Rafael Ostertag grants you additional permission to convey the
25 * resulting work. Corresponding Source for a non-source form of such a
26 * combination shall include the source code for the parts of OpenSSL used as
27 * well as that of the covered work.
28 */
29
30 #include <unistd.h>
31 #include <exception>
32
33 #include "consts.h"
34 #include "fileerror.hh"
35 #include "logger.hh"
36 #include "yapet20file.hh"
37
38 using namespace yapet;
39
40 constexpr std::uint8_t Yapet20File::RECOGNITION_STRING[];
41
Yapet20File(const std::string & filename,bool create,bool secure)42 Yapet20File::Yapet20File(const std::string& filename, bool create, bool secure)
43 : Yapet10File{filename, create, secure} {}
44
Yapet20File(Yapet20File && other)45 Yapet20File::Yapet20File(Yapet20File&& other) : Yapet10File{std::move(other)} {}
46
operator =(Yapet20File && other)47 Yapet20File& Yapet20File::operator=(Yapet20File&& other) {
48 if (&other == this) {
49 return *this;
50 }
51
52 YapetFile::operator=(std::move(other));
53
54 return *this;
55 }
56
~Yapet20File()57 Yapet20File::~Yapet20File() {}
58
readUnencryptedMetaData()59 SecureArray Yapet20File::readUnencryptedMetaData() {
60 RawFile& rawFile{getRawFile()};
61 // Skip the recognition string.
62 rawFile.seekAbsolute(recognitionStringSize());
63
64 auto resultPair{rawFile.read()};
65 if (resultPair.second == false) {
66 char msg[YAPET::Consts::EXCEPTION_MESSAGE_BUFFER_SIZE];
67 std::snprintf(msg, YAPET::Consts::EXCEPTION_MESSAGE_BUFFER_SIZE,
68 _("Cannot read unencrypted meta data from file '%s'"),
69 rawFile.filename().c_str());
70 throw FileFormatError{msg};
71 }
72
73 LOG_MESSAGE(std::string{__func__} + ": " + getRawFile().filename());
74 return resultPair.first;
75 }
76
writeUnencryptedMetaData(const SecureArray & metaData)77 void Yapet20File::writeUnencryptedMetaData(const SecureArray& metaData) {
78 RawFile& rawFile{getRawFile()};
79
80 rawFile.seekAbsolute(recognitionStringSize());
81
82 rawFile.write(metaData);
83 rawFile.flush();
84 LOG_MESSAGE(std::string{__func__} + ": " + getRawFile().filename());
85 }
86
recognitionString() const87 const std::uint8_t* Yapet20File::recognitionString() const {
88 return Yapet20File::RECOGNITION_STRING;
89 }
90
recognitionStringSize() const91 int Yapet20File::recognitionStringSize() const {
92 return Yapet20File::RECOGNITION_STRING_SIZE;
93 }