444 lines
14 KiB
C++
444 lines
14 KiB
C++
#include <QFile>
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#include <QMessageBox>
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#include <FileSystem.h>
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#include <updater/GoUpdate.h>
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#include "UpdateController.h"
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#include <QApplication>
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#include <thread>
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#include <chrono>
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#include <LocalPeer.h>
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#include "BuildConfig.h"
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// from <sys/stat.h>
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#ifndef S_IRUSR
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#define __S_IREAD 0400 /* Read by owner. */
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#define __S_IWRITE 0200 /* Write by owner. */
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#define __S_IEXEC 0100 /* Execute by owner. */
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#define S_IRUSR __S_IREAD /* Read by owner. */
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#define S_IWUSR __S_IWRITE /* Write by owner. */
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#define S_IXUSR __S_IEXEC /* Execute by owner. */
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#define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
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#define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
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#define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
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#define S_IROTH (S_IRGRP >> 3) /* Read by others. */
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#define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
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#define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
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#endif
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static QFile::Permissions unixModeToPermissions(const int mode)
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{
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QFile::Permissions perms;
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if (mode & S_IRUSR)
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{
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perms |= QFile::ReadUser;
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}
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if (mode & S_IWUSR)
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{
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perms |= QFile::WriteUser;
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}
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if (mode & S_IXUSR)
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{
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perms |= QFile::ExeUser;
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}
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if (mode & S_IRGRP)
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{
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perms |= QFile::ReadGroup;
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}
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if (mode & S_IWGRP)
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{
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perms |= QFile::WriteGroup;
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}
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if (mode & S_IXGRP)
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{
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perms |= QFile::ExeGroup;
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}
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if (mode & S_IROTH)
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{
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perms |= QFile::ReadOther;
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}
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if (mode & S_IWOTH)
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{
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perms |= QFile::WriteOther;
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}
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if (mode & S_IXOTH)
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{
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perms |= QFile::ExeOther;
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}
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return perms;
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}
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static const QLatin1String liveCheckFile("live.check");
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UpdateController::UpdateController(QWidget * parent, const QString& root, const QString updateFilesDir, GoUpdate::OperationList operations)
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{
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m_parent = parent;
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m_root = root;
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m_updateFilesDir = updateFilesDir;
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m_operations = operations;
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}
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void UpdateController::installUpdates()
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{
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qint64 pid = -1;
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QStringList args;
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bool started = false;
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qDebug() << "Installing updates.";
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#ifdef Q_OS_WIN
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QString finishCmd = QApplication::applicationFilePath();
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#elif defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD) || defined (Q_OS_OPENBSD)
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QString finishCmd = FS::PathCombine(m_root, BuildConfig.LAUNCHER_NAME);
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#elif defined Q_OS_MAC
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QString finishCmd = QApplication::applicationFilePath();
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#else
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#error Unsupported operating system.
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#endif
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QString backupPath = FS::PathCombine(m_root, "update", "backup");
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QDir origin(m_root);
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// clean up the backup folder. it should be empty before we start
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if(!FS::deletePath(backupPath))
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{
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qWarning() << "couldn't remove previous backup folder" << backupPath;
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}
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// and it should exist.
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if(!FS::ensureFolderPathExists(backupPath))
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{
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qWarning() << "couldn't create folder" << backupPath;
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return;
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}
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bool useXPHack = false;
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QString exePath;
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QString exeOrigin;
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QString exeBackup;
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// perform the update operations
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for(auto op: m_operations)
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{
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switch(op.type)
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{
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// replace = move original out to backup, if it exists, move the new file in its place
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case GoUpdate::Operation::OP_REPLACE:
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{
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#ifdef Q_OS_WIN32
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QString windowsExeName = BuildConfig.LAUNCHER_NAME + ".exe";
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// hack for people renaming the .exe because ... reasons :)
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if(op.destination == windowsExeName)
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{
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op.destination = QFileInfo(QApplication::applicationFilePath()).fileName();
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}
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#endif
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QFileInfo destination (FS::PathCombine(m_root, op.destination));
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if(destination.exists())
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{
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QString backupName = op.destination;
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backupName.replace('/', '_');
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QString backupFilePath = FS::PathCombine(backupPath, backupName);
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if(!QFile::rename(destination.absoluteFilePath(), backupFilePath))
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{
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qWarning() << "Couldn't move:" << destination.absoluteFilePath() << "to" << backupFilePath;
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m_failedOperationType = Replace;
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m_failedFile = op.destination;
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fail();
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return;
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}
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BackupEntry be;
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be.original = destination.absoluteFilePath();
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be.backup = backupFilePath;
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be.update = op.source;
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m_replace_backups.append(be);
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}
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// make sure the folder we are putting this into exists
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if(!FS::ensureFilePathExists(destination.absoluteFilePath()))
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{
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qWarning() << "REPLACE: Couldn't create folder:" << destination.absoluteFilePath();
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m_failedOperationType = Replace;
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m_failedFile = op.destination;
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fail();
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return;
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}
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// now move the new file in
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if(!QFile::rename(op.source, destination.absoluteFilePath()))
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{
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qWarning() << "REPLACE: Couldn't move:" << op.source << "to" << destination.absoluteFilePath();
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m_failedOperationType = Replace;
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m_failedFile = op.destination;
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fail();
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return;
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}
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QFile::setPermissions(destination.absoluteFilePath(), unixModeToPermissions(op.destinationMode));
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}
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break;
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// delete = move original to backup
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case GoUpdate::Operation::OP_DELETE:
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{
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QString destFilePath = FS::PathCombine(m_root, op.destination);
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if(QFile::exists(destFilePath))
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{
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QString backupName = op.destination;
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backupName.replace('/', '_');
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QString trashFilePath = FS::PathCombine(backupPath, backupName);
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if(!QFile::rename(destFilePath, trashFilePath))
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{
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qWarning() << "DELETE: Couldn't move:" << op.destination << "to" << trashFilePath;
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m_failedFile = op.destination;
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m_failedOperationType = Delete;
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fail();
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return;
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}
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BackupEntry be;
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be.original = destFilePath;
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be.backup = trashFilePath;
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m_delete_backups.append(be);
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}
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}
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break;
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}
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}
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// try to start the new binary
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args = qApp->arguments();
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args.removeFirst();
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// on old Windows, do insane things... no error checking here, this is just to have something.
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if(useXPHack)
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{
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QString script;
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auto nativePath = QDir::toNativeSeparators(exePath);
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auto nativeOriginPath = QDir::toNativeSeparators(exeOrigin);
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auto nativeBackupPath = QDir::toNativeSeparators(exeBackup);
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// so we write this vbscript thing...
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QTextStream out(&script);
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out << "WScript.Sleep 1000\n";
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out << "Set fso=CreateObject(\"Scripting.FileSystemObject\")\n";
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out << "Set shell=CreateObject(\"WScript.Shell\")\n";
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out << "fso.MoveFile \"" << nativePath << "\", \"" << nativeBackupPath << "\"\n";
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out << "fso.MoveFile \"" << nativeOriginPath << "\", \"" << nativePath << "\"\n";
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out << "shell.Run \"" << nativePath << "\"\n";
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QString scriptPath = FS::PathCombine(m_root, "update", "update.vbs");
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// we save it
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QFile scriptFile(scriptPath);
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scriptFile.open(QIODevice::WriteOnly);
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scriptFile.write(script.toLocal8Bit().replace("\n", "\r\n"));
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scriptFile.close();
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// we run it
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started = QProcess::startDetached("wscript", {scriptPath}, m_root);
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// and we quit. conscious thought.
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qApp->quit();
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return;
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}
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bool doLiveCheck = true;
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bool startFailed = false;
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// remove live check file, if any
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if(QFile::exists(liveCheckFile))
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{
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if(!QFile::remove(liveCheckFile))
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{
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qWarning() << "Couldn't remove the" << liveCheckFile << "file! We will proceed without :(";
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doLiveCheck = false;
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}
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}
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if(doLiveCheck)
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{
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if(!args.contains("--alive"))
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{
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args.append("--alive");
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}
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}
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// FIXME: reparse args and construct a safe variant from scratch. This is a workaround for GH-1874:
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QStringList realargs;
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int skip = 0;
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for(auto & arg: args)
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{
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if(skip)
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{
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skip--;
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continue;
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}
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if(arg == "-l")
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{
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skip = 1;
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continue;
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}
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realargs.append(arg);
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}
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// start the updated application
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started = QProcess::startDetached(finishCmd, realargs, QDir::currentPath(), &pid);
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// much dumber check - just find out if the call
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if(!started || pid == -1)
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{
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qWarning() << "Couldn't start new process properly!";
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startFailed = true;
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}
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if(!startFailed && doLiveCheck)
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{
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int attempts = 0;
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while(attempts < 10)
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{
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attempts++;
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QString key;
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std::this_thread::sleep_for(std::chrono::milliseconds(250));
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if(!QFile::exists(liveCheckFile))
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{
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qWarning() << "Couldn't find the" << liveCheckFile << "file!";
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startFailed = true;
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continue;
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}
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try
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{
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key = QString::fromUtf8(FS::read(liveCheckFile));
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auto id = ApplicationId::fromRawString(key);
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LocalPeer peer(nullptr, id);
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if(peer.isClient())
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{
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startFailed = false;
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qDebug() << "Found process started with key " << key;
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break;
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}
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else
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{
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startFailed = true;
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qDebug() << "Process started with key " << key << "apparently died or is not reponding...";
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break;
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}
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}
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catch (const Exception &e)
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{
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qWarning() << "Couldn't read the" << liveCheckFile << "file!";
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startFailed = true;
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continue;
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}
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}
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}
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if(startFailed)
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{
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m_failedOperationType = Start;
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fail();
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return;
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}
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else
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{
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origin.rmdir(m_updateFilesDir);
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qApp->quit();
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return;
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}
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}
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void UpdateController::fail()
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{
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qWarning() << "Update failed!";
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QString msg;
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bool doRollback = false;
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QString failTitle = QObject::tr("Update failed!");
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QString rollFailTitle = QObject::tr("Rollback failed!");
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switch (m_failedOperationType)
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{
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case Replace:
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{
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msg = QObject::tr(
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"Couldn't replace file %1. Changes will be reverted.\n"
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"See the %2 log file for details."
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).arg(m_failedFile, BuildConfig.LAUNCHER_DISPLAYNAME);
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doRollback = true;
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QMessageBox::critical(m_parent, failTitle, msg);
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break;
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}
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case Delete:
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{
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msg = QObject::tr(
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"Couldn't remove file %1. Changes will be reverted.\n"
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"See the %2 log file for details."
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).arg(m_failedFile, BuildConfig.LAUNCHER_DISPLAYNAME);
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doRollback = true;
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QMessageBox::critical(m_parent, failTitle, msg);
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break;
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}
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case Start:
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{
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msg = QObject::tr("The new version didn't start or is too old and doesn't respond to startup checks.\n"
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"\n"
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"Roll back to previous version?");
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auto result = QMessageBox::critical(
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m_parent,
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failTitle,
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msg,
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QMessageBox::Yes | QMessageBox::No,
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QMessageBox::Yes
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);
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doRollback = (result == QMessageBox::Yes);
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break;
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}
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case Nothing:
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default:
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return;
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}
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if(doRollback)
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{
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auto rollbackOK = rollback();
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if(!rollbackOK)
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{
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msg = QObject::tr("The rollback failed too.\n"
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"You will have to repair %1 manually.\n"
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"Please let us know why and how this happened.").arg(BuildConfig.LAUNCHER_DISPLAYNAME);
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QMessageBox::critical(m_parent, rollFailTitle, msg);
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qApp->quit();
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}
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}
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else
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{
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qApp->quit();
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}
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}
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bool UpdateController::rollback()
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{
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bool revertOK = true;
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// if the above failed, roll back changes
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for(auto backup:m_replace_backups)
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{
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qWarning() << "restoring" << backup.original << "from" << backup.backup;
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if(!QFile::rename(backup.original, backup.update))
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{
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revertOK = false;
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qWarning() << "moving new" << backup.original << "back to" << backup.update << "failed!";
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continue;
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}
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if(!QFile::rename(backup.backup, backup.original))
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{
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revertOK = false;
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qWarning() << "restoring" << backup.original << "failed!";
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}
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}
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for(auto backup:m_delete_backups)
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{
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qWarning() << "restoring" << backup.original << "from" << backup.backup;
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if(!QFile::rename(backup.backup, backup.original))
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{
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revertOK = false;
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qWarning() << "restoring" << backup.original << "failed!";
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}
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}
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return revertOK;
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}
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