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Diffstat (limited to 'src/libs/kdtools/kdupdaterupdateoperations.cpp')
| -rw-r--r-- | src/libs/kdtools/kdupdaterupdateoperations.cpp | 1058 |
1 files changed, 1058 insertions, 0 deletions
diff --git a/src/libs/kdtools/kdupdaterupdateoperations.cpp b/src/libs/kdtools/kdupdaterupdateoperations.cpp new file mode 100644 index 000000000..681631542 --- /dev/null +++ b/src/libs/kdtools/kdupdaterupdateoperations.cpp @@ -0,0 +1,1058 @@ +/**************************************************************************** +** Copyright (C) 2001-2010 Klaralvdalens Datakonsult AB. All rights reserved. +** +** This file is part of the KD Tools library. +** +** Licensees holding valid commercial KD Tools licenses may use this file in +** accordance with the KD Tools Commercial License Agreement provided with +** the Software. +** +** +** This file may be distributed and/or modified under the terms of the +** GNU Lesser General Public License version 2 and version 3 as published by the +** Free Software Foundation and appearing in the file LICENSE.LGPL included. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** Contact info@kdab.com if any conditions of this licensing are not +** clear to you. +** +**********************************************************************/ + +#include "kdupdaterupdateoperations.h" +#include "kdupdaterapplication.h" +#include "kdupdaterpackagesinfo.h" +#include "environment.h" + +#include <QFile> +#include <QDir> +#include <QDirIterator> +#include <QProcess> +#include <QTextStream> +#include <QDebug> +#include <QTemporaryFile> + + +#include <cerrno> + +#define SUPPORT_DETACHED_PROCESS_EXECUTION + +#ifdef SUPPORT_DETACHED_PROCESS_EXECUTION +#ifdef Q_WS_WIN +#include <windows.h> +#endif +#endif + +using namespace KDUpdater; + +static bool removeDirectory(const QString &path, QString *errorString) +{ + Q_ASSERT(errorString); + const QFileInfoList entries = QDir(path).entryInfoList(QDir::NoDotAndDotDot | QDir::AllEntries | QDir::Hidden); + for (QFileInfoList::const_iterator it = entries.constBegin(); it != entries.constEnd(); ++it) { + if (it->isDir() && !it->isSymLink()) { + removeDirectory(it->filePath(), errorString); + } else { + QFile f(it->filePath()); + if (!f.remove()) + return false; + } + } + + errno = 0; + const bool success = QDir().rmdir(path); + if (errno) + *errorString = QLatin1String(strerror(errno)); + return success; +} +/* + * \internal + * Returns a filename for a temporary file based on \a templateName + */ +static QString backupFileName(const QString &templateName) +{ + QTemporaryFile file(templateName); + file.open(); + const QString name = file.fileName(); + file.close(); + file.remove(); + return name; +} + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::CopyOperation +//////////////////////////////////////////////////////////////////////////// + +CopyOperation::CopyOperation() +{ + setName(QLatin1String("Copy")); +} + +CopyOperation::~CopyOperation() +{ + deleteFileNowOrLater(value(QLatin1String("backupOfExistingDestination")).toString()); +} + +void CopyOperation::backup() +{ + const QString dest = arguments().last(); + if (!QFile::exists(dest)) { + clearValue(QLatin1String("backupOfExistingDestination")); + return; + } + + setValue(QLatin1String("backupOfExistingDestination"), backupFileName(dest)); + + // race condition: The backup file could get created + // by another process right now. But this is the same + // in QFile::copy... + const bool success = QFile::rename(dest, value(QLatin1String("backupOfExistingDestination")).toString()); + if (!success) + setError(UserDefinedError, tr("Could not backup file %1.").arg(dest)); +} + +bool CopyOperation::performOperation() +{ + // We need two args to complete the copy operation. + // First arg provides the complete file name of source + // Second arg provides the complete file name of dest + QStringList args = this->arguments(); + if (args.count() != 2) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 2 expected.").arg(args.count())); + return false; + } + QString source = args.first(); + QString dest = args.last(); + + // If destination file exists, then we cannot use QFile::copy() + // because it does not overwrite an existing file. So we remove + // the destination file. + if (QFile::exists(dest)) { + QFile file(dest); + if (!file.remove()) { + setError(UserDefinedError); + setErrorString(tr("Could not remove destination file %1: %2").arg(dest, file.errorString())); + return false; + } + } + + QFile file(source); + const bool copied = file.copy(dest); + if (!copied) { + setError(UserDefinedError); + setErrorString(tr("Could not copy %1 to %2: %3").arg(source, dest, file.errorString())); + } + return copied; +} + +bool CopyOperation::undoOperation() +{ + const QString dest = arguments().last(); + + QFile destF(dest); + // first remove the dest + if (!destF.remove()) { + setError(UserDefinedError, tr("Could not delete file %1: %2").arg(dest, destF.errorString())); + return false; + } + + // no backup was done: + // the copy destination file wasn't existing yet - that's no error + if (!hasValue(QLatin1String("backupOfExistingDestination"))) + return true; + + QFile backupF(value(QLatin1String("backupOfExistingDestination")).toString()); + // otherwise we have to copy the backup back: + const bool success = backupF.rename(dest); + if (!success) + setError(UserDefinedError, tr("Could not restore backup file into %1: %2").arg(dest, backupF.errorString())); + return success; +} + +/*! + \reimp + */ +QDomDocument CopyOperation::toXml() const +{ + // we don't want to save the backupOfExistingDestination + if (!hasValue(QLatin1String("backupOfExistingDestination"))) + return UpdateOperation::toXml(); + + CopyOperation *const me = const_cast<CopyOperation *>(this); + + const QVariant v = value(QLatin1String("backupOfExistingDestination")); + me->clearValue(QLatin1String("backupOfExistingDestination")); + const QDomDocument xml = UpdateOperation::toXml(); + me->setValue(QLatin1String("backupOfExistingDestination"), v); + return xml; +} + +bool CopyOperation::testOperation() +{ + // TODO + return true; +} + +CopyOperation *CopyOperation::clone() const +{ + return new CopyOperation(); +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::MoveOperation +//////////////////////////////////////////////////////////////////////////// + +MoveOperation::MoveOperation() +{ + setName(QLatin1String("Move")); +} + +MoveOperation::~MoveOperation() +{ + deleteFileNowOrLater(value(QLatin1String("backupOfExistingDestination")).toString()); +} + +void MoveOperation::backup() +{ + const QString dest = arguments().last(); + if (!QFile::exists(dest)) { + clearValue(QLatin1String("backupOfExistingDestination")); + return; + } + + setValue(QLatin1String("backupOfExistingDestination"), backupFileName(dest)); + + // race condition: The backup file could get created + // by another process right now. But this is the same + // in QFile::copy... + const bool success = QFile::rename(dest, value(QLatin1String("backupOfExistingDestination")).toString()); + if (!success) + setError(UserDefinedError, tr("Could not backup file %1.").arg(dest)); +} + +bool MoveOperation::performOperation() +{ + // We need two args to complete the copy operation. + // First arg provides the complete file name of source + // Second arg provides the complete file name of dest + QStringList args = this->arguments(); + if (args.count() != 2) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 2 expected.").arg(args.count())); + return false; + } + + QString source = args.first(); + QString dest = args.last(); + + // If destination file exists, then we cannot use QFile::copy() + // because it does not overwrite an existing file. So we remove + // the destination file. + if (QFile::exists(dest)) { + QFile file(dest); + if (!file.remove(dest)) { + setError(UserDefinedError); + setErrorString(tr("Could not remove destination file %1: %2").arg(dest, file.errorString())); + return false; + } + } + + // Copy source to destination. + QFile file(source); + const bool copied = file.copy(source, dest); + if (!copied) { + setError(UserDefinedError); + setErrorString(tr("Could not copy %1 to %2: %3").arg(source, dest, file.errorString())); + return false; + } + + return deleteFileNowOrLater(source); +} + +bool MoveOperation::undoOperation() +{ + const QStringList args = arguments(); + const QString& source = args.first(); + const QString& dest = args.last(); + + // first: copy back the destination to source + QFile destF(dest); + if (!destF.copy(source)) { + setError(UserDefinedError, tr("Cannot copy %1 to %2: %3").arg(dest, source, destF.errorString())); + return false; + } + + // second: delete the move destination + if (!deleteFileNowOrLater(dest)) { + setError(UserDefinedError, tr("Cannot remove file %1.")); + return false; + } + + // no backup was done: + // the move destination file wasn't existing yet - that's no error + if (!hasValue(QLatin1String("backupOfExistingDestination"))) + return true; + + // otherwise we have to copy the backup back: + QFile backupF(value(QLatin1String("backupOfExistingDestination")).toString()); + const bool success = backupF.rename(dest); + if (!success) + setError(UserDefinedError, tr("Cannot restore backup file for %1: %2").arg(dest, backupF.errorString())); + + return success; +} + +bool MoveOperation::testOperation() +{ + // TODO + return true; +} + +MoveOperation *MoveOperation::clone() const +{ + return new MoveOperation; +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::DeleteOperation +//////////////////////////////////////////////////////////////////////////// + +DeleteOperation::DeleteOperation() +{ + setName(QLatin1String("Delete")); +} + +DeleteOperation::~DeleteOperation() +{ + deleteFileNowOrLater(value(QLatin1String("backupOfExistingFile")).toString()); +} + +void DeleteOperation::backup() +{ + const QString fileName = arguments().first(); + setValue(QLatin1String("backupOfExistingFile"), backupFileName(fileName)); + QFile file(fileName); + const bool success = file.copy(value(QLatin1String("backupOfExistingFile")).toString()); + if (!success) + setError(UserDefinedError, tr("Cannot create backup of %1: %2").arg(fileName, file.errorString())); +} + +bool DeleteOperation::performOperation() +{ + // Requires only one parameter. That is the name of + // the file to remove. + QStringList args = this->arguments(); + if (args.count() != 1) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 1 expected.").arg(args.count())); + return false; + } + + const QString fName = args.first(); + return deleteFileNowOrLater(fName); +} + +bool DeleteOperation::undoOperation() +{ + if (!hasValue(QLatin1String("backupOfExistingFile"))) + return true; + + const QString fileName = arguments().first(); + QFile backupF(value(QLatin1String("backupOfExistingFile")).toString()); + const bool success = backupF.copy(fileName) && deleteFileNowOrLater(backupF.fileName()); + if (!success) + setError(UserDefinedError, tr("Cannot restore backup file for %1: %2").arg(fileName, backupF.errorString())); + + return success; +} + +bool DeleteOperation::testOperation() +{ + // TODO + return true; +} + +DeleteOperation *DeleteOperation::clone() const +{ + return new DeleteOperation; +} + +/*! + \reimp + */ +QDomDocument DeleteOperation::toXml() const +{ + // we don't want to save the backupOfExistingFile + if (!hasValue(QLatin1String("backupOfExistingFile"))) + return UpdateOperation::toXml(); + + DeleteOperation *const me = const_cast<DeleteOperation *>(this); + + const QVariant v = value(QLatin1String("backupOfExistingFile")); + me->clearValue(QLatin1String("backupOfExistingFile")); + const QDomDocument xml = UpdateOperation::toXml(); + me->setValue(QLatin1String("backupOfExistingFile"), v); + return xml; +} + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::MkdirOperation +//////////////////////////////////////////////////////////////////////////// + +MkdirOperation::MkdirOperation() +{ + setName(QLatin1String("Mkdir")); +} + +void MkdirOperation::backup() +{ + static const QRegExp re(QLatin1String("\\\\|/")); + static const QLatin1String sep("/"); + + QString path = arguments().first(); + path.replace(re, sep); + + QDir createdDir = QDir::root(); + + // find out, which part of the path is the first one we actually need to create + int end = 0; + while (true) { + QString p = path.section(sep, 0, ++end); + createdDir = QDir(p); + if (!createdDir.exists()) + break; + if (p == path) { + // everything did already exist -> nothing to do for us (nothing to revert then, either) + createdDir = QDir::root(); + break; + } + } + + setValue(QLatin1String("createddir"), createdDir.absolutePath()); +} + +bool MkdirOperation::performOperation() +{ + // Requires only one parameter. That is the name of + // the file to remove. + QStringList args = this->arguments(); + if (args.count() != 1) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 1 expected.").arg(args.count())); + return false; + } + QString dirName = args.first(); + const bool created = QDir::root().mkpath(dirName); + if (!created) { + setError(UserDefinedError); + setErrorString(tr("Could not create folder %1: Unknown error.").arg(dirName)); + } + return created; +} + +bool MkdirOperation::undoOperation() +{ + Q_ASSERT(arguments().count() == 1); + + QDir createdDir = QDir(value(QLatin1String("createddir")).toString()); + const bool forceremoval = QVariant(value(QLatin1String("forceremoval"))).toBool(); + + // Since refactoring we know the mkdir operation which is creating the target path. If we do a full + // uninstall prevent removing the full path including target, instead remove the target only. (QTIFW-46) + if (hasValue(QLatin1String("uninstall-only")) && value(QLatin1String("uninstall-only")).toBool()) + createdDir = QDir(arguments().first()); + + if (createdDir == QDir::root()) + return true; + + if (!createdDir.exists()) + return true; + + QString errorString; + if (forceremoval) + return removeDirectory(createdDir.path(), &errorString); + + // even remove some hidden, OS-created files in there +#if defined Q_WS_MAC + QFile::remove(createdDir.path() + QLatin1String("/.DS_Store")); +#elif defined Q_WS_WIN + QFile::remove(createdDir.path() + QLatin1String("/Thumbs.db")); +#endif + + errno = 0; + const bool result = QDir::root().rmdir(createdDir.path()); + if (!result) { + if (errorString.isEmpty()) + setError(UserDefinedError, tr("Cannot remove directory %1: %2").arg(createdDir.path(), errorString)); + else + setError(UserDefinedError, tr("Cannot remove directory %1: %2").arg(createdDir.path(), QLatin1String(strerror(errno)))); + } + return result; +} + +bool KDUpdater::MkdirOperation::testOperation() +{ + // TODO + return true; +} + +MkdirOperation *MkdirOperation::clone() const +{ + return new MkdirOperation; +} + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::RmdirOperation +//////////////////////////////////////////////////////////////////////////// + +RmdirOperation::RmdirOperation() +{ + setValue(QLatin1String("removed"), false); + setName(QLatin1String("Rmdir")); +} + +void RmdirOperation::backup() +{ + // nothing to backup - rollback will just create the directory +} + +bool RmdirOperation::performOperation() +{ + // Requires only one parameter. That is the name of + // the file to remove. + QStringList args = this->arguments(); + if (args.count() != 1) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 1 expected.").arg(args.count())); + return false; + } + + QString dirName = args.first(); + QDir dir(dirName); + if (!dir.exists()) { + setError(UserDefinedError); + setErrorString(tr("Could not remove folder %1: The folder does not exist.").arg(dirName)); + return false; + } + + errno = 0; + const bool removed = dir.rmdir(dirName); + setValue(QLatin1String("removed"), removed); + if (!removed) { + setError(UserDefinedError); + setErrorString(tr("Could not remove folder %1: %2").arg(dirName, QLatin1String(strerror(errno)))); + } + return removed; +} + +bool RmdirOperation::undoOperation() +{ + if (!value(QLatin1String("removed")).toBool()) + return true; + + const QFileInfo fi(arguments().first()); + errno = 0; + const bool success = fi.dir().mkdir(fi.fileName()); + if( !success) + setError(UserDefinedError, tr("Cannot recreate directory %1: %2").arg(fi.fileName(), QLatin1String(strerror(errno)))); + + return success; +} + +bool RmdirOperation::testOperation() +{ + // TODO + return true; +} + +RmdirOperation *RmdirOperation::clone() const +{ + return new RmdirOperation; +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::AppendFileOperation +//////////////////////////////////////////////////////////////////////////// + +AppendFileOperation::AppendFileOperation() +{ + setName(QLatin1String("AppendFile")); +} + +void AppendFileOperation::backup() +{ + const QString filename = arguments().first(); + + QFile file(filename); + if (!file.exists()) + return; // nothing to backup + + setValue(QLatin1String("backupOfFile"), backupFileName(filename)); + if (!file.copy(value(QLatin1String("backupOfFile")).toString())) { + setError(UserDefinedError, tr("Cannot backup file %1: %2").arg(filename, file.errorString())); + clearValue(QLatin1String("backupOfFile")); + } +} + +bool AppendFileOperation::performOperation() +{ + // This operation takes two arguments. First argument is the name + // of the file into which a text has to be appended. Second argument + // is the text to append. + QStringList args = this->arguments(); + if (args.count() != 2) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 2 expected.").arg(args.count())); + return false; + } + + QString fName = args.first(); + QString text = args.last(); + + QFile file(fName); + if (!file.open(QFile::Append)) { + // first we rename the file, then we copy it to the real target and open the copy - the renamed original is then marked for deletion + const QString newName = backupFileName(fName); + if (!QFile::rename(fName, newName) && QFile::copy(newName, fName) && file.open(QFile::Append)) { + QFile::rename(newName, fName); + setError(UserDefinedError); + setErrorString(tr("Could not open file %1 for writing: %2").arg(file.fileName(), file.errorString())); + return false; + } + deleteFileNowOrLater(newName); + } + + QTextStream ts(&file); + ts << text; + file.close(); + + return true; +} + +bool AppendFileOperation::undoOperation() +{ + // backupOfFile being empty -> file didn't exist before -> no error + const QString filename = arguments().first(); + const QString backupOfFile = value(QLatin1String("backupOfFile")).toString(); + if (!backupOfFile.isEmpty() && !QFile::exists(backupOfFile)) { + setError(UserDefinedError, tr("Cannot find backup file for %1.").arg(filename)); + return false; + } + + const bool removed = deleteFileNowOrLater(filename); + if (!removed) { + setError(UserDefinedError, tr("Could not restore backup file for %1.").arg(filename)); + return false; + } + + // got deleted? We might be done, if it didn't exist before + if (backupOfFile.isEmpty()) + return true; + + QFile backupFile(backupOfFile); + const bool success = backupFile.rename(filename); + if (!success) + setError(UserDefinedError, tr("Could not restore backup file for %1: %2").arg(filename, backupFile.errorString())); + return success; +} + +bool AppendFileOperation::testOperation() +{ + // TODO + return true; +} + +AppendFileOperation *AppendFileOperation::clone() const +{ + return new AppendFileOperation; +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::PrependFileOperation +//////////////////////////////////////////////////////////////////////////// + +PrependFileOperation::PrependFileOperation() +{ + setName(QLatin1String("PrependFile")); +} + +void PrependFileOperation::backup() +{ + const QString filename = arguments().first(); + + QFile file(filename); + if (!file.exists()) + return; // nothing to backup + + setValue(QLatin1String("backupOfFile"), backupFileName(filename)); + if (!file.copy(value(QLatin1String("backupOfFile")).toString())) { + setError(UserDefinedError, tr("Cannot backup file %1: %2").arg(filename, file.errorString())); + clearValue(QLatin1String("backupOfFile")); + } +} + +bool PrependFileOperation::performOperation() +{ + // This operation takes two arguments. First argument is the name + // of the file into which a text has to be appended. Second argument + // is the text to append. + QStringList args = this->arguments(); + if (args.count() != 2) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 2 expected.").arg(args.count())); + return false; + } + + QString fName = args.first(); + QString text = args.last(); + + // Load the file first. + QFile file(fName); + if (!file.open(QFile::ReadOnly)) { + setError(UserDefinedError); + setErrorString(tr("Could not open file %1 for reading: %2").arg(file.fileName(), file.errorString())); + return false; + } + QString fContents(QLatin1String(file.readAll())); + file.close(); + + // Prepend text to the file text + fContents = text + fContents; + + // Now re-open the file in write only mode. + if (!file.open(QFile::WriteOnly)) { + // first we rename the file, then we copy it to the real target and open the copy - the renamed original is then marked for deletion + const QString newName = backupFileName(fName); + if (!QFile::rename(fName, newName) && QFile::copy(newName, fName) && file.open(QFile::WriteOnly)) { + QFile::rename(newName, fName); + setError(UserDefinedError); + setErrorString(tr("Could not open file %1 for writing: %2").arg(file.fileName(), file.errorString())); + return false; + } + deleteFileNowOrLater(newName); + } + QTextStream ts(&file); + ts << fContents; + file.close(); + + return true; +} + +bool PrependFileOperation::undoOperation() +{ + // bockupOfFile being empty -> file didn't exist before -> no error + const QString filename = arguments().first(); + const QString backupOfFile = value(QLatin1String("backupOfFile")).toString(); + if (!backupOfFile.isEmpty() && !QFile::exists(backupOfFile)) { + setError(UserDefinedError, tr("Cannot find backup file for %1.").arg(filename)); + return false; + } + + if (!deleteFileNowOrLater(filename)) { + setError(UserDefinedError, tr("Cannot restore backup file for %1.").arg(filename)); + return false; + } + + // got deleted? We might be done, if it didn't exist before + if (backupOfFile.isEmpty()) + return true; + + QFile backupF(backupOfFile); + const bool success = backupF.rename(filename); + if (!success) + setError(UserDefinedError, tr("Cannot restore backup file for %1: %2").arg(filename, backupF.errorString())); + + return success; +} + +bool PrependFileOperation::testOperation() +{ + // TODO + return true; +} + +PrependFileOperation *PrependFileOperation::clone() const +{ + return new PrependFileOperation; +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::ExecuteOperation +//////////////////////////////////////////////////////////////////////////// + +ExecuteOperation::ExecuteOperation() + : QObject() +{ + setName(QLatin1String("Execute")); +} + +void ExecuteOperation::backup() +{ + // this is not possible, since the process can do whatever... +} + +#if defined(SUPPORT_DETACHED_PROCESS_EXECUTION) && defined(Q_WS_WIN) +// stolen from qprocess_win.cpp +static QString qt_create_commandline(const QString &program, const QStringList &arguments) +{ + QString args; + if (!program.isEmpty()) { + QString programName = program; + if (!programName.startsWith(QLatin1Char('\"')) && !programName.endsWith(QLatin1Char('\"')) && programName.contains(QLatin1Char(' '))) + programName = QLatin1Char('\"') + programName + QLatin1Char('\"'); + programName.replace(QLatin1Char('/'), QLatin1Char('\\')); + + // add the prgram as the first arg ... it works better + args = programName + QLatin1Char(' '); + } + + for (int i = 0; i < arguments.size(); ++i) { + QString tmp = arguments.at(i); + // in the case of \" already being in the string the \ must also be escaped + tmp.replace(QLatin1String("\\\""), QLatin1String("\\\\\"")); + // escape a single " because the arguments will be parsed + tmp.replace(QLatin1Char('\"'), QLatin1String("\\\"")); + if (tmp.isEmpty() || tmp.contains(QLatin1Char(' ')) || tmp.contains(QLatin1Char('\t'))) { + // The argument must not end with a \ since this would be interpreted + // as escaping the quote -- rather put the \ behind the quote: e.g. + // rather use "foo"\ than "foo\" + QString endQuote(QLatin1Char('\"')); + int i = tmp.length(); + while (i > 0 && tmp.at(i - 1) == QLatin1Char('\\')) { + --i; + endQuote += QLatin1Char('\\'); + } + args += QLatin1String(" \"") + tmp.left(i) + endQuote; + } else { + args += QLatin1Char(' ') + tmp; + } + } + return args; +} +#endif + +bool ExecuteOperation::performOperation() +{ + // This operation receives only one argument. It is the complete + // command line of the external program to execute. + QStringList args = this->arguments(); + if (args.isEmpty()) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments: %1 arguments given, 2 expected.").arg(args.count())); + return false; + } + + QList<int> allowedExitCodes; + + QRegExp re(QLatin1String("^\\{((-?\\d+,)*-?\\d+)\\}$")); + if (re.exactMatch(args.first())) { + const QStringList numbers = re.cap(1).split(QLatin1Char(',')); + for (QStringList::const_iterator it = numbers.begin(); it != numbers.end(); ++it) + allowedExitCodes.push_back(it->toInt()); + args.pop_front(); + } else { + allowedExitCodes.push_back(0); + } + + bool success = false; +#ifdef SUPPORT_DETACHED_PROCESS_EXECUTION + // unix style: when there's an ampersand after the command, it's started detached + if (args.count() >= 2 && args.last() == QLatin1String("&")) { + args.pop_back(); +#ifdef Q_WS_WIN + QString arguments = qt_create_commandline(args.front(), args.mid(1)); + + PROCESS_INFORMATION pinfo; + + STARTUPINFOW startupInfo = { sizeof(STARTUPINFO), 0, 0, 0, + static_cast< ulong >(CW_USEDEFAULT), static_cast< ulong >(CW_USEDEFAULT), + static_cast< ulong >(CW_USEDEFAULT), static_cast< ulong >(CW_USEDEFAULT), + 0, 0, 0, STARTF_USESHOWWINDOW, SW_HIDE, 0, 0, 0, 0, 0 + }; + success = CreateProcess(0, const_cast< wchar_t* >(static_cast< const wchar_t* >(arguments.utf16())), + 0, 0, FALSE, CREATE_UNICODE_ENVIRONMENT | CREATE_NEW_CONSOLE, 0, + 0, + &startupInfo, &pinfo); + +#else + success = QProcess::startDetached(args.front(), args.mid(1)); +#endif + } + else +#endif + { + Environment::instance().applyTo(&process); //apply non-persistent variables + process.start(args.front(), args.mid(1)); + + QEventLoop loop; + QObject::connect(&process, SIGNAL(finished(int, QProcess::ExitStatus)), &loop, SLOT(quit())); + QObject::connect(&process, SIGNAL(readyRead()), this, SLOT(readProcessOutput())); + success = process.waitForStarted(-1); + if (success) { + loop.exec(); + setValue(QLatin1String("ExitCode"), process.exitCode()); + success = allowedExitCodes.contains(process.exitCode()); + } + } + if (!success) { + setError(UserDefinedError); + setErrorString(tr("Execution failed: %1").arg(args.join(QLatin1String(" ")))); + } + + return success; +} + +/*! + Cancels the ExecuteOperation. This methods tries to terminate the process + gracefully by calling QProcess::terminate. After 10 seconds, the process gets killed. + */ +void ExecuteOperation::cancelOperation() +{ + if (process.state() == QProcess::Running) + process.terminate(); + if (!process.waitForFinished(10000)) + process.kill(); +} + +void ExecuteOperation::readProcessOutput() +{ + QByteArray output = process.readAll(); + if (!output.isEmpty()) + emit outputTextChanged(QString::fromLocal8Bit(output)); +} + +bool ExecuteOperation::undoOperation() +{ + // this is not possible, since the process can do whatever... + return false; +} + +bool ExecuteOperation::testOperation() +{ + // TODO + return true; +} + +ExecuteOperation *ExecuteOperation::clone() const +{ + return new ExecuteOperation; +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::UpdatePackageOperation +//////////////////////////////////////////////////////////////////////////// + +UpdatePackageOperation::UpdatePackageOperation() +{ + setName(QLatin1String("UpdatePackage")); +} + +void UpdatePackageOperation::backup() +{ + const PackageInfo info = application()->packagesInfo()->packageInfo(application()->packagesInfo()->findPackageInfo(arguments().first())); + setValue(QLatin1String("oldVersion"), info.version); + setValue(QLatin1String("oldDate"), info.lastUpdateDate); +} + +bool UpdatePackageOperation::performOperation() +{ + // This operation receives three arguments : the name of the package + // the new version and the release date + const QStringList args = this->arguments(); + if (args.count() != 3) { + setError(InvalidArguments, tr("Invalid arguments: %1 arguments given, 3 expected.").arg(args.count())); + return false; + } + + const QString &packageName = args.at(0); + const QString &version = args.at(1); + const QDate date = QDate::fromString(args.at(2)); + const bool success = application()->packagesInfo()->updatePackage(packageName, version, date); + if (!success) + setError(UserDefinedError, tr("Cannot update %1-%2").arg(packageName, version)); + + return success; +} + +bool UpdatePackageOperation::undoOperation() +{ + const QString packageName = arguments().first(); + const QString version = arguments().at(1); + const QString oldVersion = value(QLatin1String("oldVersion")).toString(); + const QDate oldDate = value(QLatin1String("oldDate")).toDate(); + const bool success = application()->packagesInfo()->updatePackage(packageName, oldVersion, oldDate); + if (!success) + setError(UserDefinedError, tr("Cannot restore %1-%2").arg(packageName, version)); + + return success; +} + +bool UpdatePackageOperation::testOperation() +{ + // TODO + return true; +} + +UpdatePackageOperation *UpdatePackageOperation::clone() const +{ + return new UpdatePackageOperation; +} + + +//////////////////////////////////////////////////////////////////////////// +// KDUpdater::UpdateCompatOperation +//////////////////////////////////////////////////////////////////////////// + +UpdateCompatOperation::UpdateCompatOperation() +{ + setName(QLatin1String("UpdateCompatLevel")); +} + +void UpdateCompatOperation::backup() +{ + setValue(QLatin1String("oldCompatLevel"), application()->packagesInfo()->compatLevel()); +} + +bool UpdateCompatOperation::performOperation() +{ + // This operation receives one argument : the new compat level + const QStringList args = this->arguments(); + if (args.count() != 1) { + setError(InvalidArguments, tr("Invalid arguments: %1 arguments given, 1 expected.").arg(args.count())); + return false; + } + + const int level = args.first().toInt(); + application()->packagesInfo()->setCompatLevel(level); + return true; +} + +bool UpdateCompatOperation::undoOperation() +{ + if (!hasValue(QLatin1String("oldCompatLevel"))) { + setError(UserDefinedError, tr("Cannot restore previous compat-level")); + return false; + } + + application()->packagesInfo()->setCompatLevel(value(QLatin1String("oldCompatLevel")).toInt()); + return true; +} + +bool UpdateCompatOperation::testOperation() +{ + // TODO + return true; +} + +UpdateCompatOperation *UpdateCompatOperation::clone() const +{ + return new UpdateCompatOperation; +} |