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Diffstat (limited to 'logic/MMCZip.cpp')
-rw-r--r-- | logic/MMCZip.cpp | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/logic/MMCZip.cpp b/logic/MMCZip.cpp new file mode 100644 index 00000000..e2c6d1f5 --- /dev/null +++ b/logic/MMCZip.cpp @@ -0,0 +1,332 @@ +/* +Copyright (C) 2010 Roberto Pompermaier +Copyright (C) 2005-2014 Sergey A. Tachenov + +Parts of this file were part of QuaZIP. + +QuaZIP is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation, either version 2.1 of the License, or +(at your option) any later version. + +QuaZIP 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 Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with QuaZIP. If not, see <http://www.gnu.org/licenses/>. + +See COPYING file for the full LGPL text. + +Original ZIP package is copyrighted by Gilles Vollant and contributors, +see quazip/(un)MMCZip.h files for details. Basically it's the zlib license. +*/ + +#include <pathutils.h> +#include <quazip.h> +#include <JlCompress.h> +#include "MMCZip.h" + +#include <QDebug> + +bool copyData(QIODevice &inFile, QIODevice &outFile) +{ + while (!inFile.atEnd()) + { + char buf[4096]; + qint64 readLen = inFile.read(buf, 4096); + if (readLen <= 0) + return false; + if (outFile.write(buf, readLen) != readLen) + return false; + } + return true; +} + +QStringList MMCZip::extractDir(QString fileCompressed, QString dir) +{ + return JlCompress::extractDir(fileCompressed, dir); +} + +bool compressFile(QuaZip *zip, QString fileName, QString fileDest) +{ + if (!zip) + { + return false; + } + if (zip->getMode() != QuaZip::mdCreate && zip->getMode() != QuaZip::mdAppend && + zip->getMode() != QuaZip::mdAdd) + { + return false; + } + + QFile inFile; + inFile.setFileName(fileName); + if (!inFile.open(QIODevice::ReadOnly)) + { + return false; + } + + QuaZipFile outFile(zip); + if (!outFile.open(QIODevice::WriteOnly, QuaZipNewInfo(fileDest, inFile.fileName()))) + { + return false; + } + + if (!copyData(inFile, outFile) || outFile.getZipError() != UNZ_OK) + { + return false; + } + + outFile.close(); + if (outFile.getZipError() != UNZ_OK) + { + return false; + } + inFile.close(); + + return true; +} + +bool MMCZip::compressSubDir(QuaZip* zip, QString dir, QString origDir, QSet<QString>& added, QString prefix) +{ + if (!zip) return false; + if (zip->getMode()!=QuaZip::mdCreate && zip->getMode()!=QuaZip::mdAppend && zip->getMode()!=QuaZip::mdAdd) + { + return false; + } + + QDir directory(dir); + if (!directory.exists()) + { + return false; + } + + QDir origDirectory(origDir); + if (dir != origDir) + { + QuaZipFile dirZipFile(zip); + auto dirPrefix = PathCombine(prefix, origDirectory.relativeFilePath(dir)) + "/"; + if (!dirZipFile.open(QIODevice::WriteOnly, QuaZipNewInfo(dirPrefix, dir), 0, 0, 0)) + { + return false; + } + dirZipFile.close(); + } + + QFileInfoList files = directory.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot | QDir::Hidden); + for (auto file: files) + { + if(!file.isDir()) + { + continue; + } + if(!compressSubDir(zip,file.absoluteFilePath(),origDir, added, prefix)) + { + return false; + } + } + + files = directory.entryInfoList(QDir::Files); + for (auto file: files) + { + if(!file.isFile()) + { + continue; + } + + if(file.absoluteFilePath()==zip->getZipName()) + { + continue; + } + + QString filename = origDirectory.relativeFilePath(file.absoluteFilePath()); + if(prefix.size()) + { + filename = PathCombine(prefix, filename); + } + added.insert(filename); + if (!compressFile(zip,file.absoluteFilePath(),filename)) + { + return false; + } + } + + return true; +} + +bool MMCZip::mergeZipFiles(QuaZip *into, QFileInfo from, QSet<QString> &contained, + std::function<bool(QString)> filter) +{ + QuaZip modZip(from.filePath()); + modZip.open(QuaZip::mdUnzip); + + QuaZipFile fileInsideMod(&modZip); + QuaZipFile zipOutFile(into); + for (bool more = modZip.goToFirstFile(); more; more = modZip.goToNextFile()) + { + QString filename = modZip.getCurrentFileName(); + if (!filter(filename)) + { + qDebug() << "Skipping file " << filename << " from " + << from.fileName() << " - filtered"; + continue; + } + if (contained.contains(filename)) + { + qDebug() << "Skipping already contained file " << filename << " from " + << from.fileName(); + continue; + } + contained.insert(filename); + + if (!fileInsideMod.open(QIODevice::ReadOnly)) + { + qCritical() << "Failed to open " << filename << " from " << from.fileName(); + return false; + } + + QuaZipNewInfo info_out(fileInsideMod.getActualFileName()); + + if (!zipOutFile.open(QIODevice::WriteOnly, info_out)) + { + qCritical() << "Failed to open " << filename << " in the jar"; + fileInsideMod.close(); + return false; + } + if (!copyData(fileInsideMod, zipOutFile)) + { + zipOutFile.close(); + fileInsideMod.close(); + qCritical() << "Failed to copy data of " << filename << " into the jar"; + return false; + } + zipOutFile.close(); + fileInsideMod.close(); + } + return true; +} + +bool MMCZip::createModdedJar(QString sourceJarPath, QString targetJarPath, const QList<Mod>& mods) +{ + QuaZip zipOut(targetJarPath); + if (!zipOut.open(QuaZip::mdCreate)) + { + QFile::remove(targetJarPath); + qCritical() << "Failed to open the minecraft.jar for modding"; + return false; + } + // Files already added to the jar. + // These files will be skipped. + QSet<QString> addedFiles; + + // Modify the jar + QListIterator<Mod> i(mods); + i.toBack(); + while (i.hasPrevious()) + { + const Mod &mod = i.previous(); + // do not merge disabled mods. + if (!mod.enabled()) + continue; + if (mod.type() == Mod::MOD_ZIPFILE) + { + if (!mergeZipFiles(&zipOut, mod.filename(), addedFiles, noFilter)) + { + zipOut.close(); + QFile::remove(targetJarPath); + qCritical() << "Failed to add" << mod.filename().fileName() << "to the jar."; + return false; + } + } + else if (mod.type() == Mod::MOD_SINGLEFILE) + { + auto filename = mod.filename(); + if (!compressFile(&zipOut, filename.absoluteFilePath(), + filename.fileName())) + { + zipOut.close(); + QFile::remove(targetJarPath); + qCritical() << "Failed to add" << mod.filename().fileName() << "to the jar."; + return false; + } + addedFiles.insert(filename.fileName()); + } + else if (mod.type() == Mod::MOD_FOLDER) + { + auto filename = mod.filename(); + QString what_to_zip = filename.absoluteFilePath(); + QDir dir(what_to_zip); + dir.cdUp(); + QString parent_dir = dir.absolutePath(); + if (!compressSubDir(&zipOut, what_to_zip, parent_dir, addedFiles)) + { + zipOut.close(); + QFile::remove(targetJarPath); + qCritical() << "Failed to add" << mod.filename().fileName() << "to the jar."; + return false; + } + qDebug() << "Adding folder " << filename.fileName() << " from " + << filename.absoluteFilePath(); + } + } + + if (!mergeZipFiles(&zipOut, QFileInfo(sourceJarPath), addedFiles, metaInfFilter)) + { + zipOut.close(); + QFile::remove(targetJarPath); + qCritical() << "Failed to insert minecraft.jar contents."; + return false; + } + + // Recompress the jar + zipOut.close(); + if (zipOut.getZipError() != 0) + { + QFile::remove(targetJarPath); + qCritical() << "Failed to finalize minecraft.jar!"; + return false; + } + return true; +} + +bool MMCZip::noFilter(QString) +{ + return true; +} + +bool MMCZip::metaInfFilter(QString key) +{ + if(key.contains("META-INF")) + { + return false; + } + return true; +} + +bool MMCZip::compressDir(QString zipFile, QString dir, QString prefix) +{ + QuaZip zip(zipFile); + QDir().mkpath(QFileInfo(zipFile).absolutePath()); + if(!zip.open(QuaZip::mdCreate)) + { + QFile::remove(zipFile); + return false; + } + + QSet<QString> added; + if (!compressSubDir(&zip, dir, dir, added, prefix)) + { + QFile::remove(zipFile); + return false; + } + zip.close(); + if(zip.getZipError()!=0) + { + QFile::remove(zipFile); + return false; + } + return true; +} + |