/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QWSCOMMAND_QWS_P_H #define QWSCOMMAND_QWS_P_H // // W A R N I N G // ------------- // // This file is not part of the Qt API. It exists purely as an // implementation detail. This header file may change from version to // version without notice, or even be removed. // // We mean it. // // When reading commands "off the wire" in the server, the rawLen is read // and then that many bytes are allocated. If the rawLen is corrupted (or // the protocol is being attacked) too many bytes can be allocated. Set // a hard limit here for security. #define MAX_COMMAND_SIZE (16 * 1024) #include #include #include #include #include #include #include #include #include #include #include "qwsprotocolitem_qws.h" QT_BEGIN_NAMESPACE QT_MODULE(Gui) #define QTE_PIPE "QtEmbedded-%1" class QRect; /********************************************************************* * * Functions to read/write commands on/from a socket * *********************************************************************/ #ifndef QT_NO_QWS_MULTIPROCESS void qws_write_command(QIODevice *socket, int type, char *simpleData, int simpleLen, char *rawData, int rawLen); bool qws_read_command(QIODevice *socket, char *&simpleData, int &simpleLen, char *&rawData, int &rawLen, int &bytesRead); #endif struct QWSCommand : QWSProtocolItem { QWSCommand(int t, int len, char *ptr) : QWSProtocolItem(t,len,ptr) {} enum Type { Unknown = 0, Create, Shutdown, Region, RegionMove, RegionDestroy, SetProperty, AddProperty, RemoveProperty, GetProperty, SetSelectionOwner, ConvertSelection, RequestFocus, ChangeAltitude, SetOpacity, DefineCursor, SelectCursor, PositionCursor, GrabMouse, PlaySound, QCopRegisterChannel, QCopSend, RegionName, Identify, GrabKeyboard, RepaintRegion, IMMouse, IMUpdate, IMResponse, Embed, Font, ScreenTransform }; static QWSCommand *factory(int type); }; const char *qws_getCommandTypeString( QWSCommand::Type tp ); #ifndef QT_NO_DEBUG class QDebug; QDebug &operator<<(QDebug &dbg, QWSCommand::Type tp); #endif // QT_NO_DEBUG /********************************************************************* * * Commands * *********************************************************************/ struct QWSIdentifyCommand : public QWSCommand { QWSIdentifyCommand() : QWSCommand(QWSCommand::Identify, sizeof(simpleData), reinterpret_cast(&simpleData)) { simpleData.idLen = 0; simpleData.idLock = -1; } void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); if ( simpleData.idLen > MAX_COMMAND_SIZE ) { qWarning( "Identify command - name length %d - too big!", simpleData.idLen ); simpleData.idLen = MAX_COMMAND_SIZE; } if ( simpleData.idLen * int(sizeof(QChar)) > len ) { qWarning( "Identify command - name length %d - buffer size %d - buffer overrun!", simpleData.idLen, len ); } else { id = QString(reinterpret_cast(d), simpleData.idLen); } } void setId(const QString& i, int lock) { id = i; simpleData.idLen = id.length(); simpleData.idLock = lock; setData(reinterpret_cast(id.unicode()), simpleData.idLen*2, true); } struct SimpleData { int idLen; int idLock; } simpleData; QString id; }; struct QWSCreateCommand : public QWSCommand { QWSCreateCommand(int n = 1) : QWSCommand(QWSCommand::Create, sizeof(count), reinterpret_cast(&count)), count(n) {} int count; }; struct QWSRegionNameCommand : public QWSCommand { QWSRegionNameCommand() : QWSCommand(QWSCommand::RegionName, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); if ( simpleData.nameLen > MAX_COMMAND_SIZE ) { qWarning( "region name command - name length too big!" ); simpleData.nameLen = MAX_COMMAND_SIZE; } if ( simpleData.captionLen > MAX_COMMAND_SIZE ) { qWarning( "region name command - caption length too big!" ); simpleData.captionLen = MAX_COMMAND_SIZE; } if ( simpleData.nameLen + simpleData.captionLen > len ) { qWarning( "region name command - name length %d - caption length %d - buffer size %d - buffer overrun!", simpleData.nameLen, simpleData.captionLen, len ); } else { name = QString(reinterpret_cast(d), simpleData.nameLen/2); d += simpleData.nameLen; caption = QString(reinterpret_cast(d), simpleData.captionLen/2); } } void setName(const QString& n, const QString &c) { name = n; caption = c; int l = simpleData.nameLen = name.length()*2; l += simpleData.captionLen = caption.length()*2; char *d = new char[l]; memcpy(d, name.unicode(), simpleData.nameLen); memcpy(d+simpleData.nameLen, caption.unicode(), simpleData.captionLen); setData(d, l, true); delete[] d; } struct SimpleData { int windowid; int nameLen; int captionLen; } simpleData; QString name; QString caption; }; struct QWSRegionCommand : public QWSCommand { QWSRegionCommand() : QWSCommand(QWSCommand::Region, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem = true) { QWSCommand::setData(d, len, allocateMem); if( simpleData.nrectangles * int(sizeof(QRect)) + simpleData.surfacekeylength * int(sizeof(QChar)) + simpleData.surfacedatalength * int(sizeof(char)) > len ) { qWarning( "region command - rectangle count %d - surface key length %d - region data size %d - buffer size %d - buffer overrun!", simpleData.nrectangles, simpleData.surfacekeylength, simpleData.surfacedatalength, len ); } else { char *ptr = rawDataPtr; region.setRects(reinterpret_cast(ptr), simpleData.nrectangles); ptr += simpleData.nrectangles * sizeof(QRect); surfaceKey = QString(reinterpret_cast(ptr), simpleData.surfacekeylength); ptr += simpleData.surfacekeylength * sizeof(QChar); surfaceData = QByteArray(ptr, simpleData.surfacedatalength); } } void setData(int id, const QString &key, const QByteArray &data, const QRegion ®) { surfaceKey = key; surfaceData = data; region = reg; const QVector rects = reg.rects(); simpleData.windowid = id; simpleData.surfacekeylength = key.size(); simpleData.surfacedatalength = data.size(); simpleData.nrectangles = rects.count(); QVarLengthArray buffer; buffer.append(reinterpret_cast(rects.constData()), rects.count() * sizeof(QRect)); buffer.append(reinterpret_cast(key.constData()), key.size() * sizeof(QChar)); buffer.append(data, data.size()); QWSCommand::setData(buffer.constData(), buffer.size(), true); } /* XXX this will pad out in a compiler dependent way, should move nrectangles to before windowtype, and add reserved bytes. Symptom will be valgrind reported uninitialized memory usage */ struct SimpleData { int windowid; int surfacekeylength; int surfacedatalength; int nrectangles; } simpleData; QString surfaceKey; QByteArray surfaceData; QRegion region; }; struct QWSSetOpacityCommand : public QWSCommand { QWSSetOpacityCommand() : QWSCommand(QWSCommand::SetOpacity, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; uchar opacity; } simpleData; }; struct QWSRegionMoveCommand : public QWSCommand { QWSRegionMoveCommand() : QWSCommand(QWSCommand::RegionMove, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; int dx; int dy; } simpleData; }; struct QWSRegionDestroyCommand : public QWSCommand { QWSRegionDestroyCommand() : QWSCommand(QWSCommand::RegionDestroy, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; } simpleData; }; struct QWSRequestFocusCommand : public QWSCommand { QWSRequestFocusCommand() : QWSCommand(QWSCommand::RequestFocus, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; int flag; } simpleData; }; struct QWSChangeAltitudeCommand : public QWSCommand { QWSChangeAltitudeCommand() : QWSCommand(QWSCommand::ChangeAltitude, sizeof(simpleData), reinterpret_cast(&simpleData)) {} enum Altitude { Lower = -1, Raise = 0, StaysOnTop = 1 }; struct SimpleData { int windowid; Altitude altitude; bool fixed; } simpleData; }; struct QWSAddPropertyCommand : public QWSCommand { QWSAddPropertyCommand() : QWSCommand(QWSCommand::AddProperty, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid, property; } simpleData; }; struct QWSSetPropertyCommand : public QWSCommand { QWSSetPropertyCommand() : QWSCommand(QWSCommand::SetProperty, sizeof(simpleData), reinterpret_cast(&simpleData)) { data = 0; } void setData(const char *d, int len, bool allocateMem = true) { QWSCommand::setData(d, len, allocateMem); data = rawDataPtr; } struct SimpleData { int windowid, property, mode; } simpleData; char *data; }; struct QWSRepaintRegionCommand : public QWSCommand { QWSRepaintRegionCommand() : QWSCommand(QWSCommand::RepaintRegion, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem = true) { QWSCommand::setData(d, len, allocateMem); if( simpleData.nrectangles * int(sizeof(QRect)) > len ) { qWarning( "repaint region command - region rectangle count %d - buffer size %d - buffer overrun", simpleData.nrectangles, len ); simpleData.nrectangles = len / sizeof(QRect); } rectangles = reinterpret_cast(rawDataPtr); } struct SimpleData { int windowid; int windowFlags; bool opaque; int nrectangles; } simpleData; QRect * rectangles; }; struct QWSRemovePropertyCommand : public QWSCommand { QWSRemovePropertyCommand() : QWSCommand(QWSCommand::RemoveProperty, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid, property; } simpleData; }; struct QWSGetPropertyCommand : public QWSCommand { QWSGetPropertyCommand() : QWSCommand(QWSCommand::GetProperty, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid, property; } simpleData; }; struct QWSSetSelectionOwnerCommand : public QWSCommand { QWSSetSelectionOwnerCommand() : QWSCommand(QWSCommand::SetSelectionOwner, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; int hour, minute, sec, ms; // time } simpleData; }; struct QWSConvertSelectionCommand : public QWSCommand { QWSConvertSelectionCommand() : QWSCommand(QWSCommand::ConvertSelection, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int requestor; // requestor window of the selection int selection; // property on requestor into which the selection should be stored int mimeTypes; // property ion requestor in which the mimetypes, in which the selection may be, are stored } simpleData; }; struct QWSDefineCursorCommand : public QWSCommand { QWSDefineCursorCommand() : QWSCommand(QWSCommand::DefineCursor, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem = true) { QWSCommand::setData(d, len, allocateMem); data = reinterpret_cast(rawDataPtr); if (simpleData.height * ((simpleData.width+7) / 8) > len) { qWarning("define cursor command - width %d height %d- buffer size %d - buffer overrun", simpleData.width, simpleData.height, len ); simpleData.width = simpleData.height = 0; } } struct SimpleData { int width; int height; int hotX; int hotY; int id; } simpleData; unsigned char *data; }; struct QWSSelectCursorCommand : public QWSCommand { QWSSelectCursorCommand() : QWSCommand(QWSCommand::SelectCursor, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; int id; } simpleData; }; struct QWSPositionCursorCommand : public QWSCommand { QWSPositionCursorCommand() : QWSCommand(QWSCommand::PositionCursor, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int newX; int newY; } simpleData; }; struct QWSGrabMouseCommand : public QWSCommand { QWSGrabMouseCommand() : QWSCommand(QWSCommand::GrabMouse, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; bool grab; // grab or ungrab? } simpleData; }; struct QWSGrabKeyboardCommand : public QWSCommand { QWSGrabKeyboardCommand() : QWSCommand(QWSCommand::GrabKeyboard, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; bool grab; // grab or ungrab? } simpleData; }; #ifndef QT_NO_SOUND struct QWSPlaySoundCommand : public QWSCommand { QWSPlaySoundCommand() : QWSCommand(QWSCommand::PlaySound, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); filename = QString(reinterpret_cast(rawDataPtr),len/2); } void setFileName(const QString& n) { setData(reinterpret_cast(n.unicode()), n.length()*2, true); } struct SimpleData { int windowid; } simpleData; QString filename; }; #endif #ifndef QT_NO_COP struct QWSQCopRegisterChannelCommand : public QWSCommand { QWSQCopRegisterChannelCommand() : QWSCommand(QWSCommand::QCopRegisterChannel, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); if ( simpleData.chLen > MAX_COMMAND_SIZE ) { qWarning( "Command channel name too large!" ); simpleData.chLen = MAX_COMMAND_SIZE; } if( simpleData.chLen * int(sizeof(QChar)) > len ) { qWarning( "register qcop channel command - channel name length %d - buffer size %d - buffer overrun!", simpleData.chLen, len ); } else { channel = QString(reinterpret_cast(d), simpleData.chLen); } } void setChannel(const QString& n) { channel = n; simpleData.chLen = channel.length(); setData(reinterpret_cast(channel.unicode()), simpleData.chLen*2, true); } struct SimpleData { int chLen; } simpleData; QString channel; }; struct QWSQCopSendCommand : public QWSCommand { QWSQCopSendCommand() : QWSCommand(QWSCommand::QCopSend, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); if( simpleData.clen * int(sizeof(QChar)) + simpleData.mlen * int(sizeof(QChar)) + simpleData.dlen * int(sizeof(char)) > len ) { qWarning( "qcop send command - channel name length %d - message name length %d - data size %d - buffer size %d - buffer overrun!", simpleData.clen, simpleData.mlen, simpleData.dlen, len ); } else { const QChar *cd = reinterpret_cast(d); channel = QString(cd,simpleData.clen); cd += simpleData.clen; message = QString(cd,simpleData.mlen); d += simpleData.clen*sizeof(QChar) + simpleData.mlen*sizeof(QChar); data = QByteArray(d, simpleData.dlen); } } void setMessage(const QString &c, const QString &m, const QByteArray &data) { this->channel = c; this->message = m; this->data = data; simpleData.clen = c.length(); simpleData.mlen = m.length(); simpleData.dlen = data.size(); int l = simpleData.clen*sizeof(QChar); l += simpleData.mlen*sizeof(QChar); l += simpleData.dlen; char *tmp = new char[l]; char *d = tmp; memcpy(d, c.unicode(), simpleData.clen*sizeof(QChar)); d += simpleData.clen*sizeof(QChar); memcpy(d, m.unicode(), simpleData.mlen*sizeof(QChar)); d += simpleData.mlen*sizeof(QChar); memcpy(d, data.data(), simpleData.dlen); QWSCommand::setData(tmp, l, false); deleteRaw = true; } struct SimpleData { int clen; int mlen; int dlen; } simpleData; QString channel; QString message; QByteArray data; }; #endif #ifndef QT_NO_QWS_INPUTMETHODS struct QWSIMMouseCommand : public QWSCommand { QWSIMMouseCommand() : QWSCommand(QWSCommand::IMMouse, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; int state; int index; } simpleData; }; struct QWSIMResponseCommand : public QWSCommand { QWSIMResponseCommand() : QWSCommand(QWSCommand::IMResponse, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); QByteArray tmp = QByteArray::fromRawData(d, len); QDataStream s(tmp); s >> result; } void setResult(const QVariant & v) { QByteArray tmp; QDataStream s(&tmp, QIODevice::WriteOnly); s << v; setData(tmp.data(), tmp.size(), true); } struct SimpleData { int windowid; int property; } simpleData; QVariant result; }; struct QWSIMUpdateCommand: public QWSCommand { QWSIMUpdateCommand() : QWSCommand(QWSCommand::IMUpdate, sizeof(simpleData), reinterpret_cast(&simpleData)) {} struct SimpleData { int windowid; int type; int widgetid; } simpleData; }; #endif #ifndef QT_NO_QWSEMBEDWIDGET struct QWSEmbedCommand : public QWSCommand { QWSEmbedCommand() : QWSCommand(QWSCommand::Embed, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem = true) { QWSCommand::setData(d, len, allocateMem); if( simpleData.rects * int(sizeof(QRect)) > len ) { qWarning( "embed command - region rectangle count %d - buffer size %d - buffer overrun!", simpleData.rects, len ); } else { region.setRects(reinterpret_cast(rawDataPtr), simpleData.rects); } } void setData(WId embedder, WId embedded, QWSEmbedEvent::Type type, const QRegion reg = QRegion()) { simpleData.embedder = embedder; simpleData.embedded = embedded; simpleData.type = type; region = reg; const QVector rects = reg.rects(); simpleData.rects = rects.count(); QWSCommand::setData(reinterpret_cast(rects.constData()), rects.count() * sizeof(QRect)); } struct { WId embedder; WId embedded; QWSEmbedEvent::Type type; int rects; } simpleData; QRegion region; }; #endif // QT_NO_QWSEMBEDWIDGET struct QWSFontCommand : public QWSCommand { enum CommandType { StartedUsingFont, StoppedUsingFont }; QWSFontCommand() : QWSCommand(QWSCommand::Font, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setData(const char *d, int len, bool allocateMem) { QWSCommand::setData(d, len, allocateMem); fontName = QByteArray(d, len); } void setFontName(const QByteArray &name) { setData(name.constData(), name.size(), true); } struct SimpleData { int type; } simpleData; QByteArray fontName; }; struct QWSScreenTransformCommand : public QWSCommand { QWSScreenTransformCommand() : QWSCommand(QWSCommand::ScreenTransform, sizeof(simpleData), reinterpret_cast(&simpleData)) {} void setTransformation(int screen, int transformation) { simpleData.screen = screen; simpleData.transformation = transformation; } struct SimpleData { int screen; int transformation; } simpleData; }; QT_END_NAMESPACE #endif // QWSCOMMAND_QWS_P_H