126 lines
3.9 KiB
C++
126 lines
3.9 KiB
C++
/**
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* Copyright 2013 Albert Vaca <albertvaka@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "landevicelink.h"
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <netdb.h>
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#include "../linkprovider.h"
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#include "uploadjob.h"
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#include "downloadjob.h"
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LanDeviceLink::LanDeviceLink(const QString& d, LinkProvider* a, QTcpSocket* socket)
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: DeviceLink(d, a)
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{
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mSocket = socket;
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int fd = socket->socketDescriptor();
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int enableKeepAlive = 1;
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setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &enableKeepAlive, sizeof(enableKeepAlive));
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int maxIdle = 60; /* seconds */
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setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &maxIdle, sizeof(maxIdle));
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int count = 3; // send up to 3 keepalive packets out, then disconnect if no response
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setsockopt(fd, getprotobyname("TCP")->p_proto, TCP_KEEPCNT, &count, sizeof(count));
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int interval = 5; // send a keepalive packet out every 2 seconds (after the 5 second idle period)
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setsockopt(fd, getprotobyname("TCP")->p_proto, TCP_KEEPINTVL, &interval, sizeof(interval));
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connect(mSocket, SIGNAL(disconnected()),
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this, SLOT(deleteLater()));
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connect(mSocket, SIGNAL(readyRead()),
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this, SLOT(dataReceived()));
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}
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bool LanDeviceLink::sendPackageEncrypted(QCA::PublicKey& key, NetworkPackage& np)
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{
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if (np.hasPayload()) {
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UploadJob* job = new UploadJob(np.payload());
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job->start();
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np.setPayloadTransferInfo(job->getTransferInfo());
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}
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np.encrypt(key);
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int written = mSocket->write(np.serialize());
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return (written != -1);
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}
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bool LanDeviceLink::sendPackage(NetworkPackage& np)
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{
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if (np.hasPayload()) {
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UploadJob* job = new UploadJob(np.payload());
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job->start();
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np.setPayloadTransferInfo(job->getTransferInfo());
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}
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int written = mSocket->write(np.serialize());
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return (written != -1);
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}
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void LanDeviceLink::dataReceived()
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{
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//qDebug() << "LanDeviceLink dataReceived";
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QByteArray data = mSocket->readAll();
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QList<QByteArray> packages = data.split('\n');
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Q_FOREACH(const QByteArray& package, packages) {
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if (package.length() < 3) continue;
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NetworkPackage unserialized(QString::null);
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NetworkPackage::unserialize(package, &unserialized);
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if (unserialized.isEncrypted()) {
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//mPrivateKey should always be set when device link is added to device, no null-checking done here
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NetworkPackage decrypted(QString::null);
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unserialized.decrypt(mPrivateKey, &decrypted);
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if (decrypted.hasPayloadTransferInfo()) {
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qDebug() << "HasPayloadTransferInfo";
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DownloadJob* job = new DownloadJob(mSocket->peerAddress(), decrypted.payloadTransferInfo());
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job->start();
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decrypted.setPayload(job->getPayload());
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}
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Q_EMIT receivedPackage(decrypted);
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} else {
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if (unserialized.hasPayloadTransferInfo()) {
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//Lets ignore unencrypted payloads
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}
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Q_EMIT receivedPackage(unserialized);
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}
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}
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}
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void LanDeviceLink::readyRead()
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{
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}
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