1 /*

     2  * Hedgewars, a worms-like game

     3  * Copyright (c) 2006 Igor Ulyanov <iulyanov@gmail.com>

     4  *

     5  * Distributed under the terms of the BSD-modified licence:

     6  *

     7  * Permission is hereby granted, free of charge, to any person obtaining a copy

     8  * of this software and associated documentation files (the "Software"), to deal

     9  * with the Software without restriction, including without limitation the

    10  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

    11  * sell copies of the Software, and to permit persons to whom the Software is

    12  * furnished to do so, subject to the following conditions:

    13  *

    14  * 1. Redistributions of source code must retain the above copyright notice,

    15  *    this list of conditions and the following disclaimer.

    16  * 2. Redistributions in binary form must reproduce the above copyright notice,

    17  *    this list of conditions and the following disclaimer in the documentation

    18  *    and/or other materials provided with the distribution.

    19  * 3. The name of the author may not be used to endorse or promote products

    20  *    derived from this software without specific prior written permission.

    21  *

    22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

    23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

    24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO

    25  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

    28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

    29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

    30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

    31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    32  */

    33 

    34 #include "tcpBase.h"

    35 

    36 #include <QMessageBox>

    37 #include <QList>

    38 

    39 #include <QImage>

    40 

    41 #include "hwconsts.h"

    42 

    43 QList<TCPBase*> srvsList;

    44 

    45 TCPBase::TCPBase() 

    46 {

    47   IPCServer = new QTcpServer(this);

    48   connect(IPCServer, SIGNAL(newConnection()), this, SLOT(NewConnection()));

    49   IPCServer->setMaxPendingConnections(1);

    50 }

    51 

    52 void TCPBase::NewConnection()

    53 {

    54   QTcpSocket * client = IPCServer->nextPendingConnection();

    55   if(!IPCSocket) {

    56     IPCServer->close();

    57     IPCSocket = client;

    58     connect(client, SIGNAL(disconnected()), this, SLOT(ClientDisconnect()));

    59     connect(client, SIGNAL(readyRead()), this, SLOT(ClientRead()));

    60     SendToClientFirst();

    61   } else {

    62     qWarning("2nd IPC client?!");

    63     client->disconnectFromHost();

    64   }

    65 }

    66 

    67 void TCPBase::RealStart()

    68 {

    69   IPCSocket = 0;

    70   if (!IPCServer->listen(QHostAddress::LocalHost, IPC_PORT)) {

    71     QMessageBox::critical(0, tr("Error"),

    72 			  tr("Unable to start the server: %1.")

    73 			  .arg(IPCServer->errorString()));

    74   }

    75   

    76   QProcess * process;

    77   process = new QProcess;

    78   connect(process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(StartProcessError(QProcess::ProcessError)));

    79   QStringList arguments=setArguments();

    80   process->start(bindir->absolutePath() + "/hwengine", arguments);

    81 }

    82 

    83 void TCPBase::ClientDisconnect()

    84 {

    85   IPCSocket->close();

    86   IPCServer->close();

    87 

    88   onClientDisconnect();

    89 

    90   readbuffer.clear();

    91 

    92   if(srvsList.size()==1) srvsList.pop_front();

    93   emit isReadyNow();

    94 }

    95 

    96 void TCPBase::ClientRead()

    97 {

    98   readbuffer.append(IPCSocket->readAll());

    99   onClientRead();

   100 }

   101 

   102 void TCPBase::StartProcessError(QProcess::ProcessError error)

   103 {

   104   QMessageBox::critical(0, tr("Error"),

   105 			tr("Unable to run engine: %1 (")

   106 			.arg(error) + bindir->absolutePath() + "/hwengine)");

   107 }

   108 

   109 void TCPBase::tcpServerReady()

   110 {

   111   disconnect(srvsList.front(), SIGNAL(isReadyNow()), *(++srvsList.begin()), SLOT(tcpServerReady()));

   112   srvsList.pop_front();

   113 

   114   RealStart();

   115 }

   116 

   117 void TCPBase::Start()

   118 {

   119   if(srvsList.isEmpty()) {

   120     srvsList.push_back(this);

   121   } else {

   122     connect(srvsList.back(), SIGNAL(isReadyNow()), this, SLOT(tcpServerReady()));

   123     srvsList.push_back(this);

   124     return;

   125   }

   126   

   127   RealStart();

   128 }

   129 

   130 void TCPBase::onClientRead()

   131 {

   132 }

   133 

   134 void TCPBase::onClientDisconnect()

   135 {

   136 }

   137 

   138 void TCPBase::SendToClientFirst()

   139 {

   140 }