File indexing completed on 2024-05-12 16:42:16

 /*
     SPDX-FileCopyrightText: 2017 Thomas Baumgart <tbaumgart@kde.org>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "webconnect.h"
 
 #include <QLocalSocket>
 #include <QLocalServer>
 #include <QStandardPaths>
 #include <QDataStream>
 #include <QUrl>
 
 Q_LOGGING_CATEGORY(WebConnectLog, "WebConnect")
 
 class WebConnect::Private
 {
 public:
     explicit Private(WebConnect* parent)
         : q(parent)
         , clientSocket(new QLocalSocket(parent))
         , serverSocket(0)
         , server(new QLocalServer(parent))
         , serverFail(false)
         , blockSize(0)
     {
     }
 
     WebConnect* q;
 
     QString         socketName;
     QLocalSocket*   clientSocket;
     QLocalSocket*   serverSocket;
     QLocalServer*   server;
     bool            serverFail;
     quint32         blockSize;
 
     void startup()
     {
         // create a per user socket name
         socketName = QString("%1/KMyMoney-WebConnect").arg(QStandardPaths::writableLocation(QStandardPaths::RuntimeLocation));
         // try to find a server
         if (!connectToServer()) {
             // no other instance seems to be running, so we start the server
             if (!server->listen(socketName)) {
                 qCInfo(WebConnectLog) << "Starting server failed. Try to remove stale socket.";
                 server->removeServer(socketName);
                 if(!server->listen(socketName)) {
                     qCWarning(WebConnectLog) << "Starting server failed again. WebConnect not available.";
                     serverFail = true;
                 }
             }
             if (!serverFail) {
                 qCInfo(WebConnectLog) << "Running in server mode";
             } else {
                 qCWarning(WebConnectLog) << "Unable to start server mode";
             }
         } else {
             qCInfo(WebConnectLog) << "Running in client mode";
             clientSocket->disconnectFromServer();
         }
     }
 
     bool connectToServer()
     {
         // try to find a server
         qCDebug(WebConnectLog) << "Try to connect to WebConnect server";
         clientSocket->setServerName(socketName);
         clientSocket->connectToServer();
         bool rc = clientSocket->waitForConnected(200);
         qCDebug(WebConnectLog) << "Connect to server" << (rc ? "is ok" : "failed");
         return rc;
     }
 };
 
 WebConnect::WebConnect(QObject* parent)
     : QObject(parent)
     , d(new Private(this))
 {
     connect(d->clientSocket, &QLocalSocket::connected, this, &WebConnect::serverConnected);
     connect(d->clientSocket, &QLocalSocket::disconnected, this, &WebConnect::serverDisconnected);
     connect(d->server, &QLocalServer::newConnection, this, &WebConnect::clientConnected);
 
     d->startup();
 }
 
 WebConnect::~WebConnect()
 {
     if (d->server->isListening()) {
         d->server->close();
     }
     delete d;
 }
 
 void WebConnect::clientConnected()
 {
     qCDebug(WebConnectLog) << "Client connected";
     disconnect(d->server, &QLocalServer::newConnection, this, &WebConnect::clientConnected);
     if (!d->serverSocket) {
         qCDebug(WebConnectLog) << "Get next pending connection";
         // Reset to beginning of stream
         d->blockSize = 0;
         d->serverSocket = d->server->nextPendingConnection();
         connect(d->serverSocket, &QLocalSocket::disconnected, this, &WebConnect::clientDisconnected);
         connect(d->serverSocket, &QLocalSocket::readyRead, this, &WebConnect::dataAvailable);
     }
 }
 
 void WebConnect::clientDisconnected()
 {
     qCDebug(WebConnectLog) << "Client disconnected";
     d->serverSocket->deleteLater();
     d->serverSocket = 0;
     if (d->server->hasPendingConnections()) {
         qCDebug(WebConnectLog) << "Processing next pending connection";
         clientConnected();
     } else {
         qCDebug(WebConnectLog) << "Wait for next client";
         connect(d->server, &QLocalServer::newConnection, this, &WebConnect::clientConnected);
     }
 }
 
 void WebConnect::serverConnected()
 {
     qCDebug(WebConnectLog) << "Server connected";
 }
 
 void WebConnect::serverDisconnected()
 {
     qCDebug(WebConnectLog) << "Server disconnected";
 }
 
 void WebConnect::dataAvailable()
 {
     QDataStream in(d->serverSocket);
     in.setVersion(QDataStream::Qt_4_0);
 
     if (d->blockSize == 0) {
         // Relies on the fact that we put the length into the QDataStream
         if (d->serverSocket->bytesAvailable() < (int)sizeof(quint32)) {
             return;
         }
         in >> d->blockSize;
     }
 
     if (d->serverSocket->bytesAvailable() < (int)sizeof(quint32) || d->serverSocket->atEnd()) {
         return;
     }
     QUrl url;
     in >> url;
     qCDebug(WebConnectLog) << "Processing" << url;
     emit gotUrl(url);
 }
 
 void WebConnect::loadFile(const QUrl& url)
 {
     if (d->connectToServer()) {
         qCDebug(WebConnectLog) << "Pass to server" << url;
         // transfer filename
         QByteArray block;
         QDataStream stream(&block, QIODevice::WriteOnly);
         stream.setVersion(QDataStream::Qt_4_0);
         stream << (quint32) 0;
         stream << url;
         stream.device()->seek(0);
         stream << (quint32)(block.size() - sizeof(quint32));
         d->clientSocket->write(block);
         d->clientSocket->flush();
         d->clientSocket->disconnectFromServer();
     } else {
         qCWarning(WebConnectLog) << "Webconnect loadfile connection failed on client side";
     }
 }
 
 bool WebConnect::isClient() const
 {
     return !d->server->isListening() && !d->serverFail;
 }