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upnp.cpp
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upnp.cpp
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/*
* Copyright (c) 2016-2017 dresden elektronik ingenieurtechnik gmbh.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
*/
#include <QString>
#include <QTcpSocket>
#include <QTimer>
#include <QFile>
#include <QUdpSocket>
#include <QVariantMap>
#include "de_web_plugin.h"
#include "de_web_plugin_private.h"
#include "gateway_scanner.h"
/*! Inits the UPnP discorvery. */
void DeRestPluginPrivate::initUpnpDiscovery()
{
DBG_Assert(udpSock == 0);
initDescriptionXml();
if (deCONZ::appArgumentNumeric("--upnp", 1) == 0)
{
udpSock = 0;
joinedMulticastGroup = false;
return;
}
udpSock = new QUdpSocket(this);
joinedMulticastGroup = false;
connect(udpSock, SIGNAL(readyRead()),
this, SLOT(upnpReadyRead()));
upnpTimer = new QTimer(this);
upnpTimer->setSingleShot(false);
connect(upnpTimer, SIGNAL(timeout()),
this, SLOT(announceUpnp()));
upnpTimer->start(1000); // setup phase fast interval
}
/*! Replaces description_in.xml template with dynamic content. */
void DeRestPluginPrivate::initDescriptionXml()
{
deCONZ::ApsController *apsCtrl = deCONZ::ApsController::instance();
QString serverRoot = apsCtrl->getParameter(deCONZ::ParamHttpRoot);
if (!serverRoot.isEmpty())
{
descriptionXml.clear();
QFile f(serverRoot + "/description_in.xml");
if (f.open(QFile::ReadOnly))
{
QByteArray line;
do {
line = f.readLine(320);
if (!line.isEmpty())
{
line.replace(QString("{{IPADDRESS}}"), qPrintable(gwIPAddress));
line.replace(QString("{{PORT}}"), qPrintable(QString::number(gwPort)));
line.replace(QString("{{GWNAME}}"), qPrintable(gwName));
line.replace(QString("{{SERIAL}}"), qPrintable(gwBridgeId.left(6) + gwBridgeId.right(6)));
line.replace(QString("{{UUID}}"), qPrintable(gwUuid));
descriptionXml.append(line);
DBG_Printf(DBG_INFO_L2, "%s", line.constData());
}
} while (!line.isEmpty());
}
}
}
/*! Sends SSDP broadcast for announcement. */
void DeRestPluginPrivate::announceUpnp()
{
if (udpSock->state() != QAbstractSocket::BoundState)
{
joinedMulticastGroup = false;
DBG_Printf(DBG_ERROR, "UPNP socket not bound, state: %d\n", udpSock->state());
// retry
if (!udpSock->bind(QHostAddress("0.0.0.0"), 1900, QUdpSocket::ShareAddress | QUdpSocket::ReuseAddressHint)) // SSDP
{
DBG_Printf(DBG_ERROR, "UPNP error %s\n", qPrintable(udpSock->errorString()));
}
return;
}
if (!joinedMulticastGroup)
{
QHostAddress groupAddress("239.255.255.250");
if (!udpSock->joinMulticastGroup(groupAddress))
{
DBG_Printf(DBG_ERROR, "UPNP error %s\n", qPrintable(udpSock->errorString()));
return;
}
joinedMulticastGroup = true;
}
if (upnpTimer->interval() != (20 * 1000))
upnpTimer->start(20 * 1000);
QByteArray datagram = QString(QLatin1String(
"NOTIFY * HTTP/1.1\r\n"
"HOST: 239.255.255.250:1900\r\n"
"CACHE-CONTROL: max-age=100\r\n"
"LOCATION: http://%1:%2/description.xml\r\n"
"SERVER: Linux/3.14.0 UPnP/1.0 IpBridge/1.26.0\r\n"
"GWID.phoscon.de: %3\r\n"
"hue-bridgeid: %3\r\n"
"NTS: ssdp:alive\r\n"))
.arg(gwConfig["ipaddress"].toString())
.arg(gwConfig["port"].toDouble())
.arg(gwBridgeId.toUpper()).toLocal8Bit();
QByteArray nt1 = QString(QLatin1String(
"NT: upnp:rootdevice\r\n"
"USN: uuid:%1::upnp:rootdevice\r\n")).arg(gwConfig["uuid"].toString()).toLocal8Bit();
QByteArray nt2 = QString(QLatin1String(
"NT: uuid:%1\r\n"
"USN: uuid:%1\r\n")).arg(gwConfig["uuid"].toString()).toLocal8Bit();
QByteArray nt3 = QString(QLatin1String(
"NT: urn:schemas-upnp-org:device:basic:1\r\n"
"USN: uuid:%1::urn:schemas-upnp-org:device:basic:1\r\n")).arg(gwConfig["uuid"].toString()).toLocal8Bit();
quint16 port = 1900;
QHostAddress host;
host.setAddress(QLatin1String("239.255.255.250"));
if (udpSock->writeDatagram(datagram + nt1 + "\r\n", host, port) == -1)
{
DBG_Printf(DBG_ERROR, "UDP send error %s\n", qPrintable(udpSock->errorString()));
}
if (udpSock->writeDatagram(datagram + nt2 + "\r\n", host, port) == -1)
{
DBG_Printf(DBG_ERROR, "UDP send error %s\n", qPrintable(udpSock->errorString()));
}
if (udpSock->writeDatagram(datagram + nt3 + "\r\n", host, port) == -1)
{
DBG_Printf(DBG_ERROR, "UDP send error %s\n", qPrintable(udpSock->errorString()));
}
}
/*! Handles SSDP packets. */
void DeRestPluginPrivate::upnpReadyRead()
{
while (udpSock->hasPendingDatagrams())
{
quint16 port;
QHostAddress host;
QByteArray datagram;
datagram.resize(udpSock->pendingDatagramSize());
udpSock->readDatagram(datagram.data(), datagram.size(), &host, &port);
QTextStream stream(datagram);
enum ST { SearchTargetOther, SearchTargetAll, SearchTargetRoot, SearchTargetUUID, SearchTargetBasic };
ST st = SearchTargetOther;
QString location;
QString gwid;
if (DBG_IsEnabled(DBG_HTTP))
{
DBG_Printf(DBG_HTTP, "%s\n", qPrintable(datagram));
}
if (datagram.startsWith("M-SEARCH *"))
{
while (!stream.atEnd())
{
QString line = stream.readLine();
if (line.startsWith(QLatin1String("ST:")))
{
if (line.contains(QLatin1String("ssdp:all")))
{
st = SearchTargetAll;
break;
}
else if (line.contains(QLatin1String("upnp:rootdevice")))
{
st = SearchTargetRoot;
break;
}
else if (line.contains(QString(QLatin1String("ST: uuid:%1")).arg(gwConfig["uuid"].toString())))
{
st = SearchTargetUUID;
break;
}
else if (line.contains(QLatin1String("urn:schemas-upnp-org:device:basic:1")))
{
st = SearchTargetBasic;
break;
}
}
}
if (st != SearchTargetOther)
{
QByteArray response = QString(QLatin1String(
"HTTP/1.1 200 OK\r\n"
"CACHE-CONTROL: max-age=100\r\n"
"EXT:\r\n"
"LOCATION: http://%1:%2/description.xml\r\n"
"SERVER: Linux/3.14.0 UPnP/1.0 IpBridge/1.26.0\r\n"
"GWID.phoscon.de: %3\r\n"
"hue-bridgeid: %3\r\n"))
.arg(gwConfig["ipaddress"].toString())
.arg(gwConfig["port"].toDouble())
.arg(gwBridgeId.toUpper()).toLocal8Bit();
QByteArray st1 = QString(QLatin1String(
"ST: upnp:rootdevice\r\n"
"USN: uuid:%1::upnp:rootdevice\r\n")).arg(gwConfig["uuid"].toString()).toLocal8Bit();
QByteArray st2 = QString(QLatin1String(
"ST: uuid:%1\r\n"
"USN: uuid:%1\r\n")).arg(gwConfig["uuid"].toString()).toLocal8Bit();
QByteArray st3 = QString(QLatin1String(
"ST: urn:schemas-upnp-org:device:basic:1\r\n"
"USN: uuid:%1::urn:schemas-upnp-org:device:basic:1\r\n")).arg(gwConfig["uuid"].toString()).toLocal8Bit();
datagram.clear();
if (st == SearchTargetAll || st == SearchTargetRoot)
{
datagram.append(response);
datagram.append(st1);
datagram.append("\r\n");
if (udpSock->writeDatagram(datagram.data(), datagram.size(), host, port) == -1)
{
DBG_Printf(DBG_ERROR, "UDP send error %s\n", qPrintable(udpSock->errorString()));
}
datagram.clear();
}
if (st == SearchTargetAll || st == SearchTargetUUID)
{
datagram.append(response);
datagram.append(st2);
datagram.append("\r\n");
if (udpSock->writeDatagram(datagram.data(), datagram.size(), host, port) == -1)
{
DBG_Printf(DBG_ERROR, "UDP send error %s\n", qPrintable(udpSock->errorString()));
}
datagram.clear();
}
if (st == SearchTargetAll || st == SearchTargetBasic)
{
datagram.append(response);
datagram.append(st3);
datagram.append("\r\n");
if (udpSock->writeDatagram(datagram.data(), datagram.size(), host, port) == -1)
{
DBG_Printf(DBG_ERROR, "UDP send error %s\n", qPrintable(udpSock->errorString()));
}
datagram.clear();
}
}
else if (datagram.startsWith("NOTIFY *") && !location.isEmpty())
{
while (!stream.atEnd())
{
QString line = stream.readLine();
if (line.startsWith(QLatin1String("LOCATION:")))
{
location = line;
}
else if (line.startsWith(QLatin1String("GWID.phoscon.de")))
{
gwid = line;
break;
}
else if (line.startsWith(QLatin1String("hue-bridgeid")))
{
gwid = line;
break;
}
}
// phoscon gateway or hue bridge
QStringList ls = gwid.split(' ');
if (ls.size() != 2)
{
continue;
}
if (ls[1] == gwBridgeId)
{
continue; // self
}
ls = location.split(' ');
if (ls.size() != 2 || !ls[1].startsWith(QLatin1String("http://")))
{
continue;
}
// http://192.168.14.103:80/description.xml
QUrl url(ls[1]);
location = QString("http://%1:%2/api/config").arg(url.host()).arg(url.port(80));
gwScanner->queryGateway(location);
}
}
}
}