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|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 <QtCore/qbytearray.h>
#include <QtGui/qwsutils_qws.h>
#include <QtGui/qfont.h>
#include <QtCore/qdatastream.h>
#include <QtCore/qvariant.h>
#include <QtCore/qrect.h>
#include <QtGui/qregion.h>
#include <QtCore/qvector.h>
#include <QtCore/qvarlengtharray.h>
#include <QtGui/qwsevent_qws.h>
#include "qwsprotocolitem_qws.h"
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
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<char *>(&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<const QChar*>(d), simpleData.idLen);
}
}
void setId(const QString& i, int lock)
{
id = i;
simpleData.idLen = id.length();
simpleData.idLock = lock;
setData(reinterpret_cast<const char*>(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<char *>(&count)), count(n) {}
int count;
};
struct QWSRegionNameCommand : public QWSCommand
{
QWSRegionNameCommand() :
QWSCommand(QWSCommand::RegionName,
sizeof(simpleData), reinterpret_cast<char *>(&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<const QChar*>(d), simpleData.nameLen/2);
d += simpleData.nameLen;
caption = QString(reinterpret_cast<const QChar*>(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<char*>(&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<QRect*>(ptr), simpleData.nrectangles);
ptr += simpleData.nrectangles * sizeof(QRect);
surfaceKey = QString(reinterpret_cast<QChar*>(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<QRect> rects = reg.rects();
simpleData.windowid = id;
simpleData.surfacekeylength = key.size();
simpleData.surfacedatalength = data.size();
simpleData.nrectangles = rects.count();
QVarLengthArray<char, 256> buffer;
buffer.append(reinterpret_cast<const char*>(rects.constData()),
rects.count() * sizeof(QRect));
buffer.append(reinterpret_cast<const char*>(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<char*>(&simpleData)) {}
struct SimpleData {
int windowid;
uchar opacity;
} simpleData;
};
struct QWSRegionMoveCommand : public QWSCommand
{
QWSRegionMoveCommand() :
QWSCommand(QWSCommand::RegionMove, sizeof(simpleData),
reinterpret_cast<char*>(&simpleData)) {}
struct SimpleData {
int windowid;
int dx;
int dy;
} simpleData;
};
struct QWSRegionDestroyCommand : public QWSCommand
{
QWSRegionDestroyCommand() :
QWSCommand(QWSCommand::RegionDestroy, sizeof(simpleData),
reinterpret_cast<char*>(&simpleData)) {}
struct SimpleData {
int windowid;
} simpleData;
};
struct QWSRequestFocusCommand : public QWSCommand
{
QWSRequestFocusCommand() :
QWSCommand(QWSCommand::RequestFocus, sizeof(simpleData), reinterpret_cast<char*>(&simpleData)) {}
struct SimpleData {
int windowid;
int flag;
} simpleData;
};
struct QWSChangeAltitudeCommand : public QWSCommand
{
QWSChangeAltitudeCommand() :
QWSCommand(QWSCommand::ChangeAltitude, sizeof(simpleData), reinterpret_cast<char*>(&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<char*>(&simpleData)) {}
struct SimpleData {
int windowid, property;
} simpleData;
};
struct QWSSetPropertyCommand : public QWSCommand
{
QWSSetPropertyCommand() :
QWSCommand(QWSCommand::SetProperty, sizeof(simpleData),
reinterpret_cast<char*>(&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<char*>(&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<QRect *>(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<char*>(&simpleData)) {}
struct SimpleData {
int windowid, property;
} simpleData;
};
struct QWSGetPropertyCommand : public QWSCommand
{
QWSGetPropertyCommand() :
QWSCommand(QWSCommand::GetProperty, sizeof(simpleData), reinterpret_cast<char*>(&simpleData)) {}
struct SimpleData {
int windowid, property;
} simpleData;
};
struct QWSSetSelectionOwnerCommand : public QWSCommand
{
QWSSetSelectionOwnerCommand() :
QWSCommand(QWSCommand::SetSelectionOwner,
sizeof(simpleData), reinterpret_cast<char*>(&simpleData)) {}
struct SimpleData {
int windowid;
int hour, minute, sec, ms; // time
} simpleData;
};
struct QWSConvertSelectionCommand : public QWSCommand
{
QWSConvertSelectionCommand() :
QWSCommand(QWSCommand::ConvertSelection,
sizeof(simpleData), reinterpret_cast<char*>(&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<char *>(&simpleData)) {}
void setData(const char *d, int len, bool allocateMem = true) {
QWSCommand::setData(d, len, allocateMem);
data = reinterpret_cast<unsigned char *>(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<char *>(&simpleData)) {}
struct SimpleData {
int windowid;
int id;
} simpleData;
};
struct QWSPositionCursorCommand : public QWSCommand
{
QWSPositionCursorCommand() :
QWSCommand(QWSCommand::PositionCursor,
sizeof(simpleData), reinterpret_cast<char *>(&simpleData)) {}
struct SimpleData {
int newX;
int newY;
} simpleData;
};
struct QWSGrabMouseCommand : public QWSCommand
{
QWSGrabMouseCommand() :
QWSCommand(QWSCommand::GrabMouse,
sizeof(simpleData), reinterpret_cast<char *>(&simpleData)) {}
struct SimpleData {
int windowid;
bool grab; // grab or ungrab?
} simpleData;
};
struct QWSGrabKeyboardCommand : public QWSCommand
{
QWSGrabKeyboardCommand() :
QWSCommand(QWSCommand::GrabKeyboard,
sizeof(simpleData), reinterpret_cast<char *>(&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<char *>(&simpleData)) {}
void setData(const char *d, int len, bool allocateMem) {
QWSCommand::setData(d, len, allocateMem);
filename = QString(reinterpret_cast<QChar*>(rawDataPtr),len/2);
}
void setFileName(const QString& n)
{
setData(reinterpret_cast<const char*>(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<char *>(&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<const QChar*>(d), simpleData.chLen);
}
}
void setChannel(const QString& n)
{
channel = n;
simpleData.chLen = channel.length();
setData(reinterpret_cast<const char*>(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<char *>(&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<const QChar*>(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<char *>(&simpleData)) {}
struct SimpleData {
int windowid;
int state;
int index;
} simpleData;
};
struct QWSIMResponseCommand : public QWSCommand
{
QWSIMResponseCommand() :
QWSCommand(QWSCommand::IMResponse,
sizeof(simpleData), reinterpret_cast<char *>(&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<char *>(&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<char*>(&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<QRect*>(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<QRect> rects = reg.rects();
simpleData.rects = rects.count();
QWSCommand::setData(reinterpret_cast<const char*>(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<char *>(&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<char *>(&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
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