mirror of
https://github.com/qTox/qTox.git
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135 lines
4.1 KiB
C++
135 lines
4.1 KiB
C++
/*
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Copyright © 2014-2018 by The qTox Project Contributors
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This file is part of qTox, a Qt-based graphical interface for Tox.
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qTox 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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qTox 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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with qTox. If not, see <http://www.gnu.org/licenses/>
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*/
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#include "update.h"
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#include "serialize.h"
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#include "widget.h"
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#include <QCoreApplication>
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#include <QDebug>
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#include <QDir>
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#include <QFile>
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#include <QMessageBox>
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unsigned char key[crypto_sign_PUBLICKEYBYTES] = {0x20, 0x89, 0x39, 0xaa, 0x9a, 0xe8, 0xb5, 0x21,
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0x0e, 0xac, 0x02, 0xa9, 0xc4, 0x92, 0xd9, 0xa2,
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0x17, 0x83, 0xbd, 0x78, 0x0a, 0xda, 0x33, 0xcd,
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0xa5, 0xc6, 0x44, 0xc7, 0xfc, 0xed, 0x00, 0x13};
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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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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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bool isUpToDate(UpdateFileMeta fileMeta)
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{
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QString appDir = qApp->applicationDirPath();
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QFile file(appDir + QDir::separator() + fileMeta.installpath);
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if (!file.open(QIODevice::ReadOnly))
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return false;
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// If the data we have is corrupted or old, mark it for update
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QByteArray data = file.readAll();
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if (crypto_sign_verify_detached(fileMeta.sig, (unsigned char*)data.data(), data.size(), key) != 0)
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return false;
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return true;
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}
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QList<UpdateFileMeta> genUpdateDiff(QList<UpdateFileMeta> updateFlist, Widget* w)
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{
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QList<UpdateFileMeta> diff;
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float progressDiff = 45;
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float progress = 5;
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for (UpdateFileMeta file : updateFlist) {
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if (!isUpToDate(file))
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diff += file;
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progress += progressDiff / updateFlist.size();
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w->setProgress(progress);
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}
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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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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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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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qWarning() << "AutoUpdater::parseflist: Truncated data";
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return flist;
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} else {
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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)
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!= 0) {
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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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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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