284 lines
8.5 KiB
C++
284 lines
8.5 KiB
C++
/* Copyright 2013-2021 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <quazip.h>
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#include <quazipdir.h>
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#include <quazipfile.h>
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#include <JlCompress.h>
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#include "MMCZip.h"
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#include "FileSystem.h"
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#include <QDebug>
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// ours
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bool MMCZip::mergeZipFiles(QuaZip *into, QFileInfo from, QSet<QString> &contained, const JlCompress::FilterFunction filter)
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{
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QuaZip modZip(from.filePath());
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modZip.open(QuaZip::mdUnzip);
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QuaZipFile fileInsideMod(&modZip);
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QuaZipFile zipOutFile(into);
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for (bool more = modZip.goToFirstFile(); more; more = modZip.goToNextFile())
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{
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QString filename = modZip.getCurrentFileName();
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if (filter && !filter(filename))
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{
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qDebug() << "Skipping file " << filename << " from "
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<< from.fileName() << " - filtered";
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continue;
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}
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if (contained.contains(filename))
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{
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qDebug() << "Skipping already contained file " << filename << " from "
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<< from.fileName();
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continue;
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}
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contained.insert(filename);
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if (!fileInsideMod.open(QIODevice::ReadOnly))
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{
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qCritical() << "Failed to open " << filename << " from " << from.fileName();
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return false;
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}
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QuaZipNewInfo info_out(fileInsideMod.getActualFileName());
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if (!zipOutFile.open(QIODevice::WriteOnly, info_out))
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{
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qCritical() << "Failed to open " << filename << " in the jar";
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fileInsideMod.close();
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return false;
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}
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if (!JlCompress::copyData(fileInsideMod, zipOutFile))
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{
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zipOutFile.close();
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fileInsideMod.close();
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qCritical() << "Failed to copy data of " << filename << " into the jar";
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return false;
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}
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zipOutFile.close();
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fileInsideMod.close();
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}
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return true;
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}
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// ours
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bool MMCZip::createModdedJar(QString sourceJarPath, QString targetJarPath, const QList<Mod>& mods)
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{
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QuaZip zipOut(targetJarPath);
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if (!zipOut.open(QuaZip::mdCreate))
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{
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QFile::remove(targetJarPath);
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qCritical() << "Failed to open the minecraft.jar for modding";
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return false;
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}
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// Files already added to the jar.
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// These files will be skipped.
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QSet<QString> addedFiles;
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// Modify the jar
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QListIterator<Mod> i(mods);
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i.toBack();
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while (i.hasPrevious())
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{
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const Mod &mod = i.previous();
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// do not merge disabled mods.
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if (!mod.enabled())
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continue;
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if (mod.type() == Mod::MOD_ZIPFILE)
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{
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if (!mergeZipFiles(&zipOut, mod.filename(), addedFiles))
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{
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zipOut.close();
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QFile::remove(targetJarPath);
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qCritical() << "Failed to add" << mod.filename().fileName() << "to the jar.";
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return false;
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}
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}
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else if (mod.type() == Mod::MOD_SINGLEFILE)
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{
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// FIXME: buggy - does not work with addedFiles
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auto filename = mod.filename();
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if (!JlCompress::compressFile(&zipOut, filename.absoluteFilePath(), filename.fileName()))
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{
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zipOut.close();
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QFile::remove(targetJarPath);
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qCritical() << "Failed to add" << mod.filename().fileName() << "to the jar.";
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return false;
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}
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addedFiles.insert(filename.fileName());
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}
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else if (mod.type() == Mod::MOD_FOLDER)
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{
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// FIXME: buggy - does not work with addedFiles
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auto filename = mod.filename();
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QString what_to_zip = filename.absoluteFilePath();
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QDir dir(what_to_zip);
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dir.cdUp();
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QString parent_dir = dir.absolutePath();
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if (!JlCompress::compressSubDir(&zipOut, what_to_zip, parent_dir, addedFiles))
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{
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zipOut.close();
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QFile::remove(targetJarPath);
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qCritical() << "Failed to add" << mod.filename().fileName() << "to the jar.";
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return false;
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}
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qDebug() << "Adding folder " << filename.fileName() << " from "
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<< filename.absoluteFilePath();
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}
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else
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{
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// Make sure we do not continue launching when something is missing or undefined...
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zipOut.close();
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QFile::remove(targetJarPath);
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qCritical() << "Failed to add unknown mod type" << mod.filename().fileName() << "to the jar.";
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return false;
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}
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}
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if (!mergeZipFiles(&zipOut, QFileInfo(sourceJarPath), addedFiles, [](const QString key){return !key.contains("META-INF");}))
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{
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zipOut.close();
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QFile::remove(targetJarPath);
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qCritical() << "Failed to insert minecraft.jar contents.";
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return false;
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}
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// Recompress the jar
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zipOut.close();
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if (zipOut.getZipError() != 0)
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{
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QFile::remove(targetJarPath);
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qCritical() << "Failed to finalize minecraft.jar!";
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return false;
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}
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return true;
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}
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// ours
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QString MMCZip::findFolderOfFileInZip(QuaZip * zip, const QString & what, const QString &root)
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{
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QuaZipDir rootDir(zip, root);
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for(auto fileName: rootDir.entryList(QDir::Files))
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{
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if(fileName == what)
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return root;
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}
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for(auto fileName: rootDir.entryList(QDir::Dirs))
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{
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QString result = findFolderOfFileInZip(zip, what, root + fileName);
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if(!result.isEmpty())
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{
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return result;
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}
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}
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return QString();
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}
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// ours
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bool MMCZip::findFilesInZip(QuaZip * zip, const QString & what, QStringList & result, const QString &root)
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{
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QuaZipDir rootDir(zip, root);
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for(auto fileName: rootDir.entryList(QDir::Files))
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{
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if(fileName == what)
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{
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result.append(root);
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return true;
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}
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}
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for(auto fileName: rootDir.entryList(QDir::Dirs))
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{
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findFilesInZip(zip, what, result, root + fileName);
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}
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return !result.isEmpty();
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}
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// ours
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QStringList MMCZip::extractSubDir(QuaZip *zip, const QString & subdir, const QString &target)
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{
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QDir directory(target);
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QStringList extracted;
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qDebug() << "Extracting subdir" << subdir << "from" << zip->getZipName() << "to" << target;
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if (!zip->goToFirstFile())
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{
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qWarning() << "Failed to seek to first file in zip";
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return QStringList();
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}
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do
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{
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QString name = zip->getCurrentFileName();
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if(!name.startsWith(subdir))
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{
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continue;
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}
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name.remove(0, subdir.size());
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QString absFilePath = directory.absoluteFilePath(name);
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if(name.isEmpty())
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{
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absFilePath += "/";
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}
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if (!JlCompress::extractFile(zip, "", absFilePath))
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{
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qWarning() << "Failed to extract file" << name << "to" << absFilePath;
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JlCompress::removeFile(extracted);
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return QStringList();
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}
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extracted.append(absFilePath);
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qDebug() << "Extracted file" << name;
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} while (zip->goToNextFile());
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return extracted;
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}
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// ours
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bool MMCZip::extractRelFile(QuaZip *zip, const QString &file, const QString &target)
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{
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return JlCompress::extractFile(zip, file, target);
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}
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// ours
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QStringList MMCZip::extractDir(QString fileCompressed, QString dir)
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{
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QuaZip zip(fileCompressed);
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if (!zip.open(QuaZip::mdUnzip))
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{
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return {};
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}
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return MMCZip::extractSubDir(&zip, "", dir);
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}
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// ours
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QStringList MMCZip::extractDir(QString fileCompressed, QString subdir, QString dir)
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{
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QuaZip zip(fileCompressed);
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if (!zip.open(QuaZip::mdUnzip))
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{
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return {};
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}
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return MMCZip::extractSubDir(&zip, subdir, dir);
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}
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// ours
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bool MMCZip::extractFile(QString fileCompressed, QString file, QString target)
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{
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QuaZip zip(fileCompressed);
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if (!zip.open(QuaZip::mdUnzip))
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{
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return {};
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}
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return MMCZip::extractRelFile(&zip, file, target);
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}
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