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https://github.com/qTox/qTox.git
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45e20187cc
The auto-updater is essentially done, except for the GUI. For now this is only an API. The API works, but the tools to manage the update server would need some love
116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
/*
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Copyright (C) 2014 by Project Tox <https://tox.im>
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This file is part of qTox, a Qt-based graphical interface for Tox.
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This program is libre software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the COPYING file for more details.
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*/
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#include "update.h"
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#include "serialize.h"
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#include <QFile>
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#include <QDebug>
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unsigned char key[crypto_sign_PUBLICKEYBYTES] =
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{
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0xa5, 0x80, 0xf3, 0xb7, 0xd0, 0x10, 0xc0, 0xf9, 0xd6, 0xcf, 0x48, 0x15, 0x99, 0x70, 0x92, 0x49,
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0xf6, 0xe8, 0xe5, 0xe2, 0x6c, 0x73, 0x8c, 0x48, 0x25, 0xed, 0x01, 0x72, 0xf7, 0x6c, 0x17, 0x28
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};
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QByteArray getLocalFlist()
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{
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QByteArray flist;
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QFile flistFile("flist");
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if (!flistFile.open(QIODevice::ReadOnly))
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{
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qWarning() << "getLocalFlist: Can't open local flist";
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return flist;
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}
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flist = flistFile.readAll();
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flistFile.close();
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return flist;
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}
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QList<UpdateFileMeta> genUpdateDiff(QList<UpdateFileMeta> updateFlist)
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{
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QList<UpdateFileMeta> diff;
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QList<UpdateFileMeta> localFlist = parseFlist(getLocalFlist());
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for (UpdateFileMeta file : updateFlist)
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if (!localFlist.contains(file))
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diff += file;
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return diff;
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}
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QList<UpdateFileMeta> parseFlist(QByteArray flistData)
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{
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QList<UpdateFileMeta> flist;
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if (flistData.isEmpty())
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{
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qWarning() << "AutoUpdater::parseflist: Empty data";
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return flist;
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}
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// Check version
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if (flistData[0] != '1')
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{
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qWarning() << "AutoUpdater: parseflist: Bad version "<<(uint8_t)flistData[0];
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return flist;
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}
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flistData = flistData.mid(1);
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// Check signature
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if (flistData.size() < (int)(crypto_sign_BYTES))
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{
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qWarning() << "AutoUpdater::parseflist: Truncated data";
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return flist;
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}
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else
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{
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QByteArray msgData = flistData.mid(crypto_sign_BYTES);
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unsigned char* msg = (unsigned char*)msgData.data();
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if (crypto_sign_verify_detached((unsigned char*)flistData.data(), msg, msgData.size(), key) != 0)
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{
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qCritical() << "AutoUpdater: parseflist: FORGED FLIST FILE";
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return flist;
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}
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flistData = flistData.mid(crypto_sign_BYTES);
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}
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// Parse. We assume no errors handling needed since the signature is valid.
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while (!flistData.isEmpty())
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{
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UpdateFileMeta newFile;
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memcpy(newFile.sig, flistData.data(), crypto_sign_BYTES);
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flistData = flistData.mid(crypto_sign_BYTES);
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newFile.id = dataToString(flistData);
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flistData = flistData.mid(newFile.id.size() + getVUint32Size(flistData));
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newFile.installpath = dataToString(flistData);
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flistData = flistData.mid(newFile.installpath.size() + getVUint32Size(flistData));
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newFile.size = dataToUint64(flistData);
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flistData = flistData.mid(8);
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flist += newFile;
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}
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return flist;
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}
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