mirror of
https://github.com/MultiMC/MultiMC5.git
synced 2024-09-03 05:29:10 +00:00
199 lines
6.4 KiB
C++
199 lines
6.4 KiB
C++
#include "GoUpdate.h"
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#include <QDebug>
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#include <QDomDocument>
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#include <QFile>
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#include <FileSystem.h>
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#include "net/Download.h"
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#include "net/ChecksumValidator.h"
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namespace GoUpdate
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{
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bool parseVersionInfo(const QByteArray &data, VersionFileList &list, QString &error)
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{
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QJsonParseError jsonError;
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QJsonDocument jsonDoc = QJsonDocument::fromJson(data, &jsonError);
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if (jsonError.error != QJsonParseError::NoError)
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{
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error = QString("Failed to parse version info JSON: %1 at %2")
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.arg(jsonError.errorString())
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.arg(jsonError.offset);
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qCritical() << error;
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return false;
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}
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QJsonObject json = jsonDoc.object();
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qDebug() << data;
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qDebug() << "Loading version info from JSON.";
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QJsonArray filesArray = json.value("Files").toArray();
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for (QJsonValue fileValue : filesArray)
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{
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QJsonObject fileObj = fileValue.toObject();
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QString file_path = fileObj.value("Path").toString();
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VersionFileEntry file{file_path, fileObj.value("Perms").toVariant().toInt(),
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FileSourceList(), fileObj.value("MD5").toString(), };
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qDebug() << "File" << file.path << "with perms" << file.mode;
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QJsonArray sourceArray = fileObj.value("Sources").toArray();
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for (QJsonValue val : sourceArray)
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{
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QJsonObject sourceObj = val.toObject();
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QString type = sourceObj.value("SourceType").toString();
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if (type == "http")
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{
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file.sources.append(FileSource("http", sourceObj.value("Url").toString()));
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}
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else
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{
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qWarning() << "Unknown source type" << type << "ignored.";
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}
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}
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qDebug() << "Loaded info for" << file.path;
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list.append(file);
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}
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return true;
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}
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bool processFileLists
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(
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const VersionFileList ¤tVersion,
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const VersionFileList &newVersion,
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const QString &rootPath,
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const QString &tempPath,
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NetJob::Ptr job,
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OperationList &ops
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)
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{
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// First, if we've loaded the current version's file list, we need to iterate through it and
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// delete anything in the current one version's list that isn't in the new version's list.
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for (VersionFileEntry entry : currentVersion)
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{
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QFileInfo toDelete(FS::PathCombine(rootPath, entry.path));
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if (!toDelete.exists())
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{
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qCritical() << "Expected file " << toDelete.absoluteFilePath()
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<< " doesn't exist!";
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}
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bool keep = false;
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//
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for (VersionFileEntry newEntry : newVersion)
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{
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if (newEntry.path == entry.path)
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{
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qDebug() << "Not deleting" << entry.path
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<< "because it is still present in the new version.";
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keep = true;
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break;
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}
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}
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// If the loop reaches the end and we didn't find a match, delete the file.
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if (!keep)
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{
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if (toDelete.exists())
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ops.append(Operation::DeleteOp(entry.path));
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}
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}
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// Next, check each file in MultiMC's folder and see if we need to update them.
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for (VersionFileEntry entry : newVersion)
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{
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// TODO: Let's not MD5sum a ton of files on the GUI thread. We should probably find a
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// way to do this in the background.
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QString fileMD5;
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QString realEntryPath = FS::PathCombine(rootPath, entry.path);
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QFile entryFile(realEntryPath);
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QFileInfo entryInfo(realEntryPath);
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bool needs_upgrade = false;
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if (!entryFile.exists())
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{
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needs_upgrade = true;
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}
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else
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{
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bool pass = true;
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if (!entryInfo.isReadable())
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{
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qCritical() << "File " << realEntryPath << " is not readable.";
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pass = false;
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}
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if (!entryInfo.isWritable())
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{
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qCritical() << "File " << realEntryPath << " is not writable.";
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pass = false;
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}
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if (!entryFile.open(QFile::ReadOnly))
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{
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qCritical() << "File " << realEntryPath << " cannot be opened for reading.";
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pass = false;
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}
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if (!pass)
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{
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ops.clear();
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return false;
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}
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}
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if(!needs_upgrade)
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{
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QCryptographicHash hash(QCryptographicHash::Md5);
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auto foo = entryFile.readAll();
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hash.addData(foo);
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fileMD5 = hash.result().toHex();
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if ((fileMD5 != entry.md5))
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{
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qDebug() << "MD5Sum does not match!";
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qDebug() << "Expected:'" << entry.md5 << "'";
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qDebug() << "Got: '" << fileMD5 << "'";
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needs_upgrade = true;
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}
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}
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// skip file. it doesn't need an upgrade.
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if (!needs_upgrade)
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{
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qDebug() << "File" << realEntryPath << " does not need updating.";
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continue;
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}
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// yep. this file actually needs an upgrade. PROCEED.
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qDebug() << "Found file" << realEntryPath << " that needs updating.";
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// Go through the sources list and find one to use.
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// TODO: Make a NetAction that takes a source list and tries each of them until one
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// works. For now, we'll just use the first http one.
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for (FileSource source : entry.sources)
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{
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if (source.type != "http")
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continue;
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qDebug() << "Will download" << entry.path << "from" << source.url;
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// Download it to updatedir/<filepath>-<md5> where filepath is the file's
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// path with slashes replaced by underscores.
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QString dlPath = FS::PathCombine(tempPath, QString(entry.path).replace("/", "_"));
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// We need to download the file to the updatefiles folder and add a task
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// to copy it to its install path.
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auto download = Net::Download::makeFile(source.url, dlPath);
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auto rawMd5 = QByteArray::fromHex(entry.md5.toLatin1());
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download->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
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job->addNetAction(download);
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ops.append(Operation::CopyOp(dlPath, entry.path, entry.mode));
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}
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}
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return true;
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}
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}
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