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QWClientPrivate.cpp
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QWClientPrivate.cpp
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/*
GNU General Public License version 3 notice
Copyright (C) 2012 Mihawk <[email protected]>. All rights reserved.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see < http://www.gnu.org/licenses/ >.
*/
#include "QWClient.h"
#include "QWClientPrivate.h"
#include "QWPack.h"
#include "QWTables.h"
#include <QUdpSocket>
#include <QTime>
#include <QBuffer>
#include <QFile>
#include <QDir>
#include <QRegExp>
#include <QStringList>
#include <QFileInfoList>
#include <QHostInfo>
#include <QCryptographicHash>
#include <QCoreApplication>
#include <QtEndian>
#include <QRegExp>
#include <QDebug>
const char* QWClientPrivate::ClientName = "libqwclient";
const char* QWClientPrivate::ClientVersion = "0.1";
QWClientPrivate::QWClientPrivate(QWClient* client):
myClient(client),
mySocket(new QUdpSocket),
myTime(new QTime),
myLastServerReplyTime(new QTime),
myDownload(new QFile),
myClientName(ClientName),
myClientVersion(ClientVersion),
myState(QWClient::DisconnectedState),
myGameDir("qw"),
myQuakeDir(QCoreApplication::applicationDirPath()),
myPing(666),
myRate(3000),
myTopColor(0),
myBottomColor(0),
myName(ClientName),
mySpectatorFlag(true),
myTeam("lqwc"),
_mapChecksum(0),
myWrongChecksumFlag(false)
{
/* Setup IO streams */
myInBuffer.setBuffer(&myInData);
myInStream.setDevice(&myInBuffer);
myInStream.setByteOrder(QDataStream::LittleEndian);
myInBuffer.open(QIODevice::ReadOnly);
myUnreliableOutBuffer.setBuffer(&myUnreliableOutData);
myUnreliableOutStream.setDevice(&myUnreliableOutBuffer);
myUnreliableOutBuffer.open(QIODevice::WriteOnly);
myUnreliableOutStream.setByteOrder(QDataStream::LittleEndian);
myReliableOutBuffer.setBuffer(&myReliableOutData);
myReliableOutStream.setDevice(&myReliableOutBuffer);
myReliableOutBuffer.open(QIODevice::WriteOnly);
myReliableOutStream.setByteOrder(QDataStream::LittleEndian);
myOutBuffer.setBuffer(&myOutData);
myOutStream.setDevice(&myOutBuffer);
myOutBuffer.open(QIODevice::ReadWrite);
myOutStream.setByteOrder(QDataStream::LittleEndian);
reloadPackFiles();
}
void QWClientPrivate::setPing(quint16 ping)
{
myPing = qBound<quint16>(13, ping, 999);
}
void QWClientPrivate::reconnect()
{
disconnect();
connect(myHost.toString().toLatin1().data(), myPort);
}
void QWClientPrivate::setRate(quint16 rate)
{
myRate = qBound<quint16>(2500, rate, 30000);
if(myState != QWClient::ConnectedState)
return;
sendCmd("setinfo \"rate\" \"" + QString::number(rate) + "\"");
}
void QWClientPrivate::setSpectator(bool spectate)
{
if(myState == QWClient::ConnectedState)
{
if(spectate && !mySpectatorFlag)
observe();
else if(!spectate && mySpectatorFlag)
join();
return;
}
mySpectatorFlag = spectate;
}
void QWClientPrivate::setPassword(const QString &password)
{
myPassword = password;
}
void QWClientPrivate::setQuakeFolder(const QString &path)
{
myQuakeDir = path;
QDir dir(myQuakeDir);
dir.mkpath(myGameDir);
reloadPackFiles();
}
void QWClientPrivate::join()
{
mySpectatorFlag = false;
if(myState != QWClient::ConnectedState)
return;
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "setinfo \"spectator\" \"\"");
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "join");
}
void QWClientPrivate::observe()
{
mySpectatorFlag = true;
if(myState != QWClient::ConnectedState)
return;
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "setinfo \"spectator\" \"" + QString::number(mySpectatorFlag) + "\"");
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "observe");
}
const QString& QWClientPrivate::gameDir() const
{
return myGameDir;
}
const QString& QWClientPrivate::quakeDir() const
{
return myQuakeDir;
}
void QWClientPrivate::setColor(quint8 bottom, quint8 top)
{
myBottomColor = bottom;
myTopColor = top;
if(myState != QWClient::ConnectedState)
return;
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "setinfo \"bottomcolor\" \"" + QString::number(myBottomColor) + "\"");
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "setinfo \"topcolor\" \"" + QString::number(myTopColor) + "\"");
}
void QWClientPrivate::setName(const char *name)
{
myName = QString(name);
if(myState == QWClient::ConnectedState)
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "setinfo \"name\" \"" + myName + "\"");
}
}
void QWClientPrivate::setTeam(const char *team)
{
myTeam = QString(team);
if(myState == QWClient::ConnectedState)
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "setinfo \"name\" \"" + myTeam + "\"");
}
}
void QWClientPrivate::sendCmd(const QString &cmd)
{
if(myState != QWClient::ConnectedState)
return;
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, cmd);
}
QWClientPrivate::~QWClientPrivate()
{
delete myTime;
delete myLastServerReplyTime;
delete mySocket;
delete myDownload;
}
static QRegExp packRegex("pak[0-9]+\\.pak", Qt::CaseInsensitive);
void QWClientPrivate::reloadPackFiles()
{
for(int i = 0; i < myPacks.size(); ++i)
delete myPacks.at(i);
myPacks.clear();
QDir gameDir(myQuakeDir + "/" + myGameDir);
if(!gameDir.isReadable())
return;
QFileInfoList files = gameDir.entryInfoList(QStringList("*.pak"), QDir::Files);
for(int i = 0; i < files.size(); ++i)
{
if(packRegex.indexIn(files.at(i).fileName()) != -1)
{
QWPack* pack = new QWPack();
if(!pack->load(files.at(i).absoluteFilePath()))
{
delete pack;
continue;
}
myPacks.push_back(pack);
}
}
}
void QWClientPrivate::run()
{
/* Read and parse packets sent by the server */
readPackets();
/* Send something to the server to keep the connection alive */
sendToServer();
}
void QWClientPrivate::sendToServer(bool dontWait)
{
/* Check for resend */
if(myState == QWClient::ConnectingState)
{
if(myTime->elapsed() >= 5000)
{
sendConnectionless("getchallenge\n");
myClient->onChallenge();
myTime->restart();
}
return;
}
/* Go full speed when connecting or downloading a new map */
if(!dontWait && (myState != QWClient::ConnectedState || myDownload->isOpen() ? 12 : myPing) > myTime->elapsed())
return;
sendMovement(); //send some movement every frame
bool sendReliable = false;
if(myIncomingAck > myLastRealiableSeq && myIncomingAckReliableFlag != myOutgoingSeqReliableFlag)
sendReliable = true;
if(!myReliableData.size() && myReliableOutData.size())
{
myReliableData = myReliableOutData;
myOutgoingSeqReliableFlag ^= 1;
sendReliable = true;
myReliableOutData.clear();
myReliableOutStream.device()->seek(0);
}
/* Write packet header */
myOutData.clear();
myOutStream.device()->seek(0);
myOutStream << (myOutgoingSeq | (sendReliable << 31));
myOutStream << (myIncomingSeq | (myIncomingSeqReliableFlag << 31));
myOutStream << myQPort;
myOutgoingSeq++;
/* Write reliable buffer first */
if(sendReliable)
{
myOutData.append(myReliableData);
myLastRealiableSeq = myOutgoingSeq;
}
/* Unreliable part afterwards */
if(myOutData.size() + myUnreliableOutData.size() < MAX_MSGLEN && myUnreliableOutData.size())
{
myOutData.append(myUnreliableOutData);
myUnreliableOutData.clear();
myUnreliableOutStream.device()->seek(0);
}
/* Finally send the packet */
mySocket->write(myOutData);
mySocket->waitForBytesWritten();
myOutData.clear();
myOutStream.device()->seek(0);
myTime->restart();
}
void QWClientPrivate::readPackets()
{
if(!mySocket->isOpen())
return;
if(!mySocket->hasPendingDatagrams())
{
if(myLastServerReplyTime->secsTo(QTime::currentTime()) >= 30)
{
myClient->onError("Client Timed Out.");
disconnect();
return;
}
return;
}
*myLastServerReplyTime = QTime::currentTime();
myInData.resize(mySocket->pendingDatagramSize());
// myInData = mySocket->readAll();
mySocket->readDatagram(myInData.data(), mySocket->pendingDatagramSize());
myInStream.device()->seek(0);
quint32 seq;
myInStream >> seq;
if(seq == 0xffffffff)
parseConnectionless();
else
parseServerMessage();
}
void QWClientPrivate::parseConnectionless()
{
quint8 c;
c = readByte();
switch(c)
{
case S2C_CHALLENGE:
{
QString challenge;
QString connString;
challenge = readString();
connString.append("connect " + QString::number(PROTOCOL_VERSION) + " " + QString::number(myQPort) + " " + challenge);
connString.append(" \"\\rate\\" + QString::number(myRate));
if(!myPassword.isEmpty())
connString.append("\\password\\" + myPassword);
connString.append("\\msg\\1\\noaim\\1\\topcolor\\" + QString::number(myTopColor) + "\\bottomcolor\\" + QString::number(myBottomColor) + "\\w_switch\\2\\b_switch\\2\\*client\\" + myClientName);
connString.append(" " + myClientVersion + "\\name\\" + myName + "\\team\\" + myTeam + "\\spectator\\" + (mySpectatorFlag ? "1" : "0") + "\\pmodel\\33168\\emodel\\6967\\*z_ext\\383\"");
connString.append(QString::asprintf("\n0x%x 0x%x\n", PROTOCOL_VERSION_FTE, FTE_PEXT_FLOATCOORDS));
myInStream.device()->seek(0);
sendConnectionless(connString.toLatin1());
myClient->onConnection();
}
break;
case S2C_CONNECTION:
{
myState = QWClient::ConnectedState;
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "new");
myClient->onConnected();
}
break;
case A2C_PRINT:
myClient->onOOBPrint(readString().toLatin1().data());
break;
case A2C_CLIENT_COMMAND:
myClient->onOOBCommand(readString().toLatin1().data());
break;
case A2A_PING:
sendConnectionless(QString(QChar(A2A_ACK)).toLatin1());
break;
case A2A_ACK:
// qDebug("Ack");
break;
case A2A_NACK:
// qDebug("Nack");
break;
case A2A_ECHO:
myClient->onOOBEcho(readString().toLatin1().data());
break;
}
}
bool QWClientPrivate::fileExists(const QString &filename)
{
/* Search on the gamedir first */
if(QFile::exists(myQuakeDir + "/" + myGameDir + "/" + filename))
return true;
/* Search quake pak files next */
for(int i = 0; i < myPacks.size(); ++i)
{
if(myPacks[i]->exists(filename))
return true;
}
return false;
}
bool QWClientPrivate::readFile(const QString &filename, char **data, quint64 *len)
{
/* Try disk */
QFile file(myQuakeDir + "/" + myGameDir + "/" + filename);
*len = 0;
if(file.open(QIODevice::ReadOnly))
{
*len = file.size();
*data = new char[*len];
file.read(*data, *len);
return true;
}
/* Try packs */
for(int i = 0; i < myPacks.size(); ++i)
{
QWPack* pack = myPacks.at(i);
if(!pack->exists(filename))
continue;
pack->read(filename, data, len);
return true;
}
return false;
}
//int bitCounts[32]; /// just for protocol profiling
void QWClientPrivate::parseDelta(entityState_t *from, entityState_t *to, int bits)
{
int i;
int morebits;
// set everything to the state we are delta'ing from
*to = *from;
to->number = bits & 511;
bits &= ~511;
if(bits & U_MOREBITS)
{ // read in the low order bits
i = readByte();
bits |= i;
}
if(bits & U_FTE_EVENMORE && myFTEProtocolExtensions) {
morebits = readByte();
if (morebits & U_FTE_YETMORE)
morebits |= readByte() << 8;
} else {
morebits = 0;
}
// // count the bits for net profiling
// for (i=0 ; i<16 ; i++)
// if (bits&(1<<i))
// bitCounts[i]++;
to->flags = bits;
if(bits & U_MODEL)
to->modelindex = readByte();
if(bits & U_FRAME)
to->frame = readByte();
if(bits & U_COLORMAP)
to->colormap = readByte();
if(bits & U_SKIN)
to->skinnum = readByte();
if(bits & U_EFFECTS)
to->effects = readByte();
if(bits & U_ORIGIN1)
to->origin[0] = readCoord();
if(bits & U_ANGLE1)
to->angles[0] = readAngle();
if(bits & U_ORIGIN2)
to->origin[1] = readCoord();
if(bits & U_ANGLE2)
to->angles[1] = readAngle();
if(bits & U_ORIGIN3)
to->origin[2] = readCoord();
if(bits & U_ANGLE3)
to->angles[2] = readAngle();
if(bits & U_SOLID)
{}
if(morebits & U_FTE_TRANS && myFTEProtocolExtensions & FTE_PEXT_TRANS)
readByte();
if(morebits & U_FTE_ENTITYDBL)
{}
if(morebits & U_FTE_ENTITYDBL2)
{}
if(morebits & U_FTE_MODELDBL)
{}
}
//========================================================================
// Parser
quint32 QWClientPrivate::littleLong(quint32 l)
{
if(QSysInfo::ByteOrder == QSysInfo::LittleEndian)
return qToLittleEndian<quint32>(l);
else
return l;
}
quint16 QWClientPrivate::littleShort(quint16 s)
{
if(QSysInfo::ByteOrder == QSysInfo::LittleEndian)
return qToLittleEndian<quint16>(s);
else
return s;
}
float QWClientPrivate::littleFloat(float f)
{
if(QSysInfo::ByteOrder == QSysInfo::LittleEndian)
return qToLittleEndian<float>(f);
else
return f;
}
bool QWClientPrivate::checkForBadRead(quint8 typeSize)
{
if(myInStream.device()->pos()+typeSize > myInStream.device()->size())
{
myBadReadFlag = true;
return true;
}
return false;
}
float QWClientPrivate::readAngle()
{
if (!(this->myFTEProtocolExtensions & FTE_PEXT_FLOATCOORDS))
{
if(checkForBadRead(1))
return -1;
quint8 angle;
myInStream >> angle;
return angle * (360.0f/256);
}
else
{
return readAngle16();
}
}
float QWClientPrivate::readAngle16()
{
if(checkForBadRead(2))
return -1;
quint16 angle;
myInStream >> angle;
return angle * (360.0f/65536);
}
float QWClientPrivate::readCoord()
{
if (! (this->myFTEProtocolExtensions & FTE_PEXT_FLOATCOORDS))
{
if(checkForBadRead(2))
return -1;
quint16 coord;
myInStream >> coord;
return coord * (1.0f/8);
}
else
{
if(checkForBadRead(4))
return -1;
return readFloat();
}
}
quint8 QWClientPrivate::readByte()
{
if(checkForBadRead(1))
return 0xff;
quint8 byte;
myInStream >> byte;
return byte;
}
float QWClientPrivate::readFloat()
{
union
{
quint8 b[4];
int l;
float f;
} d;
d.b[0] = readByte();
d.b[1] = readByte();
d.b[2] = readByte();
d.b[3] = readByte();
return littleFloat(d.f);
}
const QString QWClientPrivate::readString()
{
QString str;
quint8 c;
c = readByte();
while(c && c != 255) //bad read or null terminator
{
str.append(c);
c = readByte();
}
return str;
}
qint32 QWClientPrivate::readLong()
{
if(checkForBadRead(4))
return -1;
quint32 l;
myInStream >> l;
return l;
}
qint16 QWClientPrivate::readShort()
{
if(checkForBadRead(2))
return -1;
qint16 s;
myInStream >> s;
return s;
}
//========================================================================
void QWClientPrivate::parseSvcNoop()
{
}
void QWClientPrivate::parseSvcDisconnect()
{
mySocket->close();
myState = QWClient::DisconnectedState;
myClient->onDisconnect();
if (myWrongChecksumFlag) {
reconnect();
myWrongChecksumFlag = false;
return;
}
}
static QRegExp mapChecksumRegex("^Map model file does not match \\(maps\\/\\w+\\.bsp\\), -?\\d+ != (-?\\d+)\\/(-?\\d+)\\.");
void QWClientPrivate::parseSvcPrint()
{
quint8 level = readByte();
QString msg = readString();
if (mapChecksumRegex.indexIn(msg) != -1) {
_mapChecksum = mapChecksumRegex.capturedTexts().at(1).toInt();
myWrongChecksumFlag = true;
return;
}
myClient->onPrint(level, msg.toLatin1().data());
}
void QWClientPrivate::parseSvcCenterPrint()
{
myClient->onCenterPrint(readString().toLatin1().data());
}
void QWClientPrivate::parseSvcStuffText()
{
QStringList commands = readString().split("\n");
for(int i = 0; i < commands.size(); ++i)
{
QString cmd = commands.at(i);
if(cmd == "reconnect" || cmd == "cmd new")
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "new");
}
else if(cmd == "cmd pext")
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, "pext 0x00000000 0x00000000 0x00000000");
}
else if(cmd.startsWith("cmd spawn"))
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, cmd.section(' ', 1));
}
else if(cmd.startsWith("cmd prespawn"))
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, cmd.section(' ', 1));
}
else if(cmd == "skins")
{
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, QString("begin " + QString::number(myServerCount)));
}
else if(cmd.startsWith("packet"))
{
QRegExp regex("\"(.+)\"");
int pos = regex.indexIn(cmd);
if(pos != -1)
sendConnectionless(regex.capturedTexts().at(1).toLatin1());
}
myClient->onStuffedCmd(cmd.toLatin1().data());
}
}
void QWClientPrivate::parseSvcDamage()
{
int armor = readByte();
int blood = readByte();
myClient->onDamage(armor, blood);
readCoord();
readCoord();
readCoord();
}
void QWClientPrivate::parseSvcServerData()
{
while (1) {
myProtocolVersion = readLong();
if(myProtocolVersion == PROTOCOL_VERSION_FTE)
{
myFTEProtocolExtensions = readLong();
continue;
}
if (myProtocolVersion == PROTOCOL_VERSION_FTE2)
{
myFTEProtocolExtensions2 = readLong();
continue;
}
if(myProtocolVersion == PROTOCOL_VERSION)
break;
}
myServerCount = readLong();
myGameDir = readString();
QDir quakeDir(myQuakeDir);
if(!quakeDir.cd(myGameDir))
quakeDir.mkdir(myGameDir);
quint8 playerNum = readByte(); //playernum
if(playerNum & 0x80)
{
mySpectatorFlag = true;
playerNum &= ~0x80;
}
else
mySpectatorFlag = false;
QString lvlName = readString();
float a = readFloat();
float b = readFloat();
float c = readFloat();
float d = readFloat();
float e = readFloat();
float f = readFloat();
float g = readFloat();
float h = readFloat();
float i = readFloat();
float j = readFloat();
myClient->onLevelChanged(
playerNum,
lvlName.toLatin1().data(),
a,b,c,d,e,f,g,h,i,j
);
writeByte(&myReliableOutStream, clc_stringcmd);
writeString(&myReliableOutStream, QString("soundlist " + QString::number(myServerCount) + " 0"));
if(myDownload->isOpen())
myDownload->close();
}
void QWClientPrivate::parseSvcSetAngle()
{
readAngle();
readAngle();
readAngle();
}
void QWClientPrivate::parseSvcLightStyle()
{
readByte();
readString();
}
void QWClientPrivate::parseSvcSound()
{
quint16 channel;
channel = readShort();
if (channel & SND_VOLUME)
readByte();
if (channel & SND_ATTENUATION)
readByte();
myClient->onPlaySound(readByte());
readCoord();
readCoord();
readCoord();
}
void QWClientPrivate::parseSvcStopSound()
{
readShort();
}
void QWClientPrivate::parseSvcUpdateFrags()
{
//printf("svc_updatefrags\n");
quint8 playerNum = readByte();
quint16 frags = readShort();
myClient->onUpdateFrags(playerNum, frags);
}
void QWClientPrivate::parseSvcUpdatePing()
{
quint8 playerNum = readByte();
quint16 ping = readShort();
myClient->onUpdatePing(playerNum, ping);
}
void QWClientPrivate::parseSvcUpdatePL()
{
quint8 playerNum = readByte();
quint8 pl = readByte();
myClient->onUpdatePL(playerNum, pl);
}
void QWClientPrivate::parseSvcUpdateEnterTime()
{
readByte();
readFloat();
}
void QWClientPrivate::parseSvcSpawnBaseLine()
{
//printf("svc_spawnbaseline\n");
readShort();
readByte();
readByte();
readByte();
readByte();
for(int i = 0; i < 3; i++)
{
readCoord();
readAngle();
}
}
void QWClientPrivate::parseSvcSpawnStatic()
{
//printf("svc_spawnstatic\n");
//rawReadShort();
readByte();
readByte();
readByte();
readByte();
for(int i = 0; i < 3; i++)
{
readCoord();
readAngle();
}
}
void QWClientPrivate::parseSvcTempEntity()
{
//printf("svc_temp_entity\n");
quint8 c = readByte();
bool parsed = false;
switch(c)
{
case TE_LIGHTNING1:
case TE_LIGHTNING2:
case TE_LIGHTNING3:
readShort();
readCoord();
readCoord();
readCoord();
readCoord();
readCoord();
readCoord();
parsed = true;
break;
case TE_GUNSHOT:
readByte();
readCoord();
readCoord();
readCoord();
parsed = true;
break;
case TE_BLOOD:
readByte();
readCoord();
readCoord();
readCoord();
parsed = true;
break;
case TE_LIGHTNINGBLOOD:
readCoord();
readCoord();
readCoord();
parsed = true;
break;
}
if(!parsed)
{
readCoord();
readCoord();
readCoord();
}
}
void QWClientPrivate::parseSvcUpdateStat()
{
readByte();
readByte();
}
void QWClientPrivate::parseSvcUpdateStatLong()
{
//printf("svc_updatestatlong\n");
readByte();
readLong();
}