Add an option to automatically detect the external IP(v4)

src/libtomahawk/TomahawkSettings.cpp

@@ -782,6 +782,20 @@ TomahawkSettings::setSongChangeNotificationEnabled(bool enable)
 }
 
 
+bool
+TomahawkSettings::autoDetectExternalIp() const
+{
+    return value( "network/auto-detect-external-ip" ).toBool();
+}
+
+
+void
+TomahawkSettings::setAutoDetectExternalIp( bool autoDetect )
+{
+    setValue( "network/auto-detect-external-ip", autoDetect );
+}
+
+
 unsigned int
 TomahawkSettings::volume() const
 {

src/libtomahawk/TomahawkSettings.h

@@ -147,6 +147,9 @@ public:
     bool songChangeNotificationEnabled() const; /// true by default
     void setSongChangeNotificationEnabled( bool enable );
 
+    bool autoDetectExternalIp() const;
+    void setAutoDetectExternalIp( bool autoDetect );
+
     QString externalHostname() const;
     void setExternalHostname( const QString& externalHostname );
 

src/libtomahawk/network/Servent.cpp

@@ -127,6 +127,8 @@ Servent::~Servent()
 bool
 Servent::startListening( QHostAddress ha, bool upnp, int port )
 {
+    Q_D( Servent );
+
     d_func()->externalAddresses = QList<QHostAddress>();
     d_func()->port = port;
     int defPort = TomahawkSettings::instance()->defaultPort();
@@ -181,11 +183,20 @@ Servent::startListening( QHostAddress ha, bool upnp, int port )
     switch ( mode )
     {
         case TomahawkSettings::Static:
-            d_func()->externalHostname = TomahawkSettings::instance()->externalHostname();
-            d_func()->externalPort = TomahawkSettings::instance()->externalPort();
-            d_func()->ready = true;
-            // All setup is made, were done.
-            emit ready();
+            d->externalPort = TomahawkSettings::instance()->externalPort();
+            if ( TomahawkSettings::instance()->autoDetectExternalIp() )
+            {
+                QNetworkReply* reply = TomahawkUtils::nam()->get( QNetworkRequest( QUrl( "http://toma.hk/?stat=1" ) ) );
+                connect( reply, SIGNAL( finished() ), SLOT( ipDetected() ) );
+                // Not emitting ready here as we are not done.
+            }
+            else
+            {
+                d->externalHostname = TomahawkSettings::instance()->externalHostname();
+                d->ready = true;
+                // All setup is made, were done.
+                emit ready();
+            }
             break;
 
         case TomahawkSettings::Lan:
@@ -950,6 +961,39 @@ Servent::checkACLResult( const QString& nodeid, const QString& username, Tomahaw
     d_func()->queuedForACLResult[username].remove( nodeid );
 }
 
+void
+Servent::ipDetected()
+{
+    Q_D( Servent );
+    QNetworkReply* reply = qobject_cast<QNetworkReply*>( sender() );
+
+    if ( reply->error() == QNetworkReply::NoError )
+    {
+        QJson::Parser p;
+        bool ok;
+        const QVariantMap res = p.parse( reply, &ok ).toMap();
+        if ( !ok )
+        {
+            tLog() << Q_FUNC_INFO << "Failed parsing ip-autodetection response";
+            d->externalPort = -1;
+        }
+        else
+        {
+            QString externalIP = res.value( "ip" ).toString();
+            tLog( LOGVERBOSE ) << Q_FUNC_INFO << "Found external IP:" << externalIP;
+            d->externalHostname = externalIP;
+        }
+    }
+    else
+    {
+        d->externalPort = -1;
+        tLog() << Q_FUNC_INFO << "ip-autodetection returned an error:" << reply->errorString();
+    }
+
+    d->ready = true;
+    emit ready();
+}
+
 
 void
 Servent::reverseOfferRequest( ControlConnection* orig_conn, const QString& theirdbid, const QString& key, const QString& theirkey )

src/libtomahawk/network/Servent.h

@@ -162,6 +162,7 @@ private slots:
     void readyRead();
     void socketError( QAbstractSocket::SocketError e );
     void checkACLResult( const QString &nodeid, const QString &username, Tomahawk::ACLStatus::Type peerStatus );
+    void ipDetected();
 
     Connection* claimOffer( ControlConnection* cc, const QString &nodeid, const QString &key, const QHostAddress peer = QHostAddress::Any );
 

src/tomahawk/SettingsDialog.cpp

@@ -108,7 +108,7 @@ SettingsDialog::SettingsDialog(QObject *parent )
         m_advancedWidgetUi->upnpRadioButton->setChecked( true );
 
     m_advancedWidgetUi->staticHostNamePortLabel->setEnabled( m_advancedWidgetUi->staticIpRadioButton->isChecked() );
-    m_advancedWidgetUi->staticHostName->setEnabled( m_advancedWidgetUi->staticIpRadioButton->isChecked() );
+    m_advancedWidgetUi->staticHostName->setEnabled( m_advancedWidgetUi->staticIpRadioButton->isChecked() && !s->autoDetectExternalIp() );
     m_advancedWidgetUi->staticPort->setEnabled( m_advancedWidgetUi->staticIpRadioButton->isChecked() );
     m_advancedWidgetUi->staticHostNameLabel->setEnabled( m_advancedWidgetUi->staticIpRadioButton->isChecked() );
     m_advancedWidgetUi->staticPortLabel->setEnabled( m_advancedWidgetUi->staticIpRadioButton->isChecked() );
@@ -173,6 +173,7 @@ SettingsDialog::SettingsDialog(QObject *parent )
     m_advancedWidgetUi->staticHostName->setText( s->externalHostname() );
     m_advancedWidgetUi->staticPort->setValue( s->externalPort() );
     m_advancedWidgetUi->proxyButton->setVisible( true );
+    m_advancedWidgetUi->autoDetectIpCheckBox->setChecked( s->autoDetectExternalIp() );
 
     m_collectionWidgetUi->checkBoxWatchForChanges->setChecked( s->watchForChanges() );
     m_collectionWidgetUi->scannerTimeSpinBox->setValue( s->scannerTime() );
@@ -248,6 +249,7 @@ SettingsDialog::SettingsDialog(QObject *parent )
     connect( m_advancedWidgetUi->lanOnlyRadioButton, SIGNAL( toggled(bool) ), SLOT( toggleRemoteMode() ) );
     connect( m_advancedWidgetUi->staticIpRadioButton, SIGNAL( toggled(bool) ), SLOT( toggleRemoteMode() ) );
     connect( m_advancedWidgetUi->upnpRadioButton, SIGNAL( toggled(bool) ), SLOT( toggleRemoteMode() ) );
+    connect( m_advancedWidgetUi->autoDetectIpCheckBox, SIGNAL( toggled( bool ) ), SLOT( toggleAutoDetectIp( bool ) ) );
     connect( m_advancedWidgetUi->enableProxyCheckBox, SIGNAL( toggled(bool) ), SLOT( toggleProxyEnabled() ) );
     connect( m_advancedWidgetUi->enableProxyCheckBox, SIGNAL( toggled(bool) ), SLOT( requiresRestart() ) );
 
@@ -268,6 +270,7 @@ SettingsDialog::saveSettings()
     s->setSongChangeNotificationEnabled( m_advancedWidgetUi->checkBoxSongChangeNotifications->checkState() == Qt::Checked );
     s->setProxyType( m_advancedWidgetUi->enableProxyCheckBox->isChecked() ? QNetworkProxy::Socks5Proxy : QNetworkProxy::NoProxy );
     s->setExternalAddressMode( m_advancedWidgetUi->upnpRadioButton->isChecked() ? TomahawkSettings::Upnp : ( m_advancedWidgetUi->lanOnlyRadioButton->isChecked() ? TomahawkSettings::Lan : TomahawkSettings::Static ) );
+    s->setAutoDetectExternalIp( m_advancedWidgetUi->autoDetectIpCheckBox->isChecked() );
 
     s->setExternalHostname( m_advancedWidgetUi->staticHostName->text() );
     s->setExternalPort( m_advancedWidgetUi->staticPort->value() );
@@ -385,6 +388,13 @@ SettingsDialog::toggleProxyEnabled()
 }
 
 
+void
+SettingsDialog::toggleAutoDetectIp( bool checked )
+{
+    m_advancedWidgetUi->staticHostName->setEnabled( !checked );
+}
+
+
 void
 SettingsDialog::updateScanOptionsView()
 {

src/tomahawk/SettingsDialog.h

@@ -39,16 +39,16 @@ class QToolbarTabDialog;
 
 namespace Ui
 {
-    class ProxyDialog;
+class ProxyDialog;
 }
 
 namespace Tomahawk
 {
-    namespace Accounts
-    {
-        class AccountModel;
-        class Account;
-        class AccountFactory;
+namespace Accounts
+{
+class AccountModel;
+class Account;
+class AccountFactory;
 class Account;
 class AccountModelFilterProxy;
 }
@@ -60,7 +60,7 @@ Q_OBJECT
 
 public:
     explicit ProxyDialog( QWidget* parent = 0 );
-    ~ProxyDialog() {};
+    ~ProxyDialog() {}
 
     void saveSettings();
 
@@ -85,6 +85,7 @@ private slots:
 
     void toggleRemoteMode();
     void toggleProxyEnabled();
+    void toggleAutoDetectIp( bool checked );
     void showProxySettings();
 
     void accountsFilterChanged( int );

src/tomahawk/Settings_Advanced.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>469</width>
+    <width>473</width>
     <height>475</height>
    </rect>
   </property>
@@ -109,6 +109,33 @@
         </item>
        </layout>
       </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout">
+        <item>
+         <spacer name="horizontalSpacer">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeType">
+           <enum>QSizePolicy::Fixed</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>40</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
+        <item>
+         <widget class="QCheckBox" name="autoDetectIpCheckBox">
+          <property name="text">
+           <string>Automatically detect external IP address</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
      </layout>
     </widget>
    </item>