Make PGM interface configurable

1 files changed, 60 insertions, 1 deletions

diff --git a/src/gui/clientConfigDialog.cpp b/src/gui/clientConfigDialog.cpp
index 76b4f5e..3867118 100644
--- a/src/gui/clientConfigDialog.cpp
+++ b/src/gui/clientConfigDialog.cpp
@@ -16,15 +16,32 @@
  # -----------------------------------------------------------------------------
  */
 
+#include <QtDebug>
 #include "clientConfigDialog.h"
+#include <cerrno>
+#include <cstdlib>
+#include <cstring>
+
+// For getting the network interface list:
+#ifdef __linux
+# include <sys/ioctl.h>
+# include <net/if.h>
+#endif
+
+using namespace std;
 
 ClientConfigDialog::ClientConfigDialog(QWidget *parent) :
-        QDialog(parent)
+        QDialog(parent),
+        _interfaceListModel(0)
 {
     setupUi(this);
     connect(this, SIGNAL(accepted()), this, SLOT(writeSettings()));
     connect(radioButtonOtherRO, SIGNAL(clicked()), this,
             SLOT(checkPermissions()));
+    connect(reloadInterfaceListButton, SIGNAL(clicked()), this, SLOT(reloadNetworkInterfaceList()));
+    reloadNetworkInterfaceList();
+    interfaceList->setModel(_interfaceListModel);
+    interfaceList->setModelColumn(0);
 
 }
 
@@ -66,6 +83,9 @@ void ClientConfigDialog::readSettings()
     checkBoxAllowFiletransfer->setChecked(_settings.value(
                                               "Permissions/allow_filetransfer").toBool());
 
+    if(!_settings.value("Muticast/interface").isNull())
+        interfaceList->setEditText(_settings.value("Multicast/interface").toString());
+
     qDebug("[%s] Setting read from: '%s'", metaObject()->className(),
            qPrintable(_settings.fileName()));
 }
@@ -88,6 +108,7 @@ void ClientConfigDialog::writeSettings()
     _settings.setValue("Permissions/allow_chat", checkBoxAllowChat->isChecked());
     _settings.setValue("Permissions/allow_filetransfer",
                        checkBoxAllowFiletransfer->isChecked());
+    _settings.setValue("Multicast/interface", interfaceList->currentText());
     _settings.sync();
     emit configChanged();
 
@@ -103,3 +124,41 @@ void ClientConfigDialog::checkPermissions()
     if (radioButtonLecturerNO->isChecked() && radioButtonOtherRO->isChecked())
         radioButtonLecturerRO->setChecked(true);
 }
+
+void ClientConfigDialog::reloadNetworkInterfaceList()
+{
+#ifdef __linux
+    static struct ifreq ifreqs[20];
+    ifconf ifconfigs;
+    memset(&ifconfigs, 0, sizeof(ifconfigs));
+    ifconfigs.ifc_len = sizeof(ifreqs);
+    ifconfigs.ifc_buf = (char*)&ifreqs;
+
+    int nosock = socket(AF_INET, SOCK_STREAM, 0);
+    if (nosock < 0)
+    {
+        qWarning() << "Could not get a socket descriptor:" << strerror(errno);
+    }
+    int retval;
+    if ((retval = ioctl(nosock, SIOCGIFCONF, (char*)(&ifconfigs))) < 0)
+    {
+        qWarning() << "Could not  get the list of interfaces:" << strerror(errno);
+        return;
+    }
+
+    QStringList interfaces;
+    for(int i = 0; i < ifconfigs.ifc_len/sizeof(struct ifreq); i++)
+    {
+        char ifname[IFNAMSIZ + 1];
+        strncpy(ifname, ifreqs[i].ifr_name, IFNAMSIZ);
+        ifname[IFNAMSIZ] = '\0';
+        interfaces << QString::fromLocal8Bit(ifname);
+    }
+    if(!_interfaceListModel)
+        _interfaceListModel = new QStringListModel(interfaces, this);
+    else
+        _interfaceListModel->setStringList(interfaces);
+#else
+# warning "We have no way to get your system's network interface list. Some porting may be required."
+#endif
+}