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# sym_iap_util.h Example File
network/qftp/sym_iap_util.h

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     #ifndef QSYM_IAP_UTIL_H
     #define QSYM_IAP_UTIL_H

     // Symbian
     #include <utf.h>
     #include <es_sock.h>
     #include <in_sock.h>
     #include <es_enum.h>
     #include <in_iface.h>
     #include <commdbconnpref.h>
     #include <e32cmn.h>

     // OpenC
     #include <sys/socket.h>
     #include <net/if.h>

     //Qt
     #include <QSettings>
     #include <QStringList>
     //#include <QTextCodec>

     _LIT(KIapNameSetting, "IAP\\Name");             // text - mandatory
     _LIT(KIapDialogPref, "IAP\\DialogPref");        // TUnit32 - optional
     _LIT(KIapService, "IAP\\IAPService");           // TUnit32 - mandatory
     _LIT(KIapServiceType, "IAP\\IAPServiceType");   // text - mandatory
     _LIT(KIapBearer, "IAP\\IAPBearer");             // TUint32 - optional
     _LIT(KIapBearerType, "IAP\\IAPBearerType");     // text - optional
     _LIT(KIapNetwork, "IAP\\IAPNetwork");           // TUint32 - optional

     const QLatin1String qtOrganizationTag("Trolltech");
     const QLatin1String qtNetworkModuleTag("QtNetwork");
     const QLatin1String iapGroupTag("IAP");
     const QLatin1String iapNamesArrayTag("Names");
     const QLatin1String iapNameItemTag("Name");

     static QTextCodec *utf16LETextCodec = 0;

     void clearIapNamesSettings(QSettings &settings) {
         settings.beginGroup(qtNetworkModuleTag);
             settings.beginGroup(iapGroupTag);
                settings.remove(iapNamesArrayTag);
             settings.endGroup();
         settings.endGroup();
     }

     void writeIapNamesSettings(QSettings &settings, const QStringList& iapNames) {
         clearIapNamesSettings(settings);
         settings.beginGroup(qtNetworkModuleTag);
             settings.beginGroup(iapGroupTag);
                 settings.beginWriteArray(iapNamesArrayTag);
                 for (int index = 0; index < iapNames.size(); ++index) {
                     settings.setArrayIndex(index);
                     settings.setValue(iapNameItemTag, iapNames.at(index));
                 }
                 settings.endArray();
             settings.endGroup();
         settings.endGroup();
     }

     void readIapNamesSettings(QSettings &settings, QStringList& iapNames) {
         settings.beginGroup(qtNetworkModuleTag);
             settings.beginGroup(iapGroupTag);
                 int last = settings.beginReadArray(iapNamesArrayTag);
                 for (int index = 0; index < last; ++index) {
                     settings.setArrayIndex(index);
                     iapNames.append(settings.value(iapNameItemTag).toString());
                 }
                 settings.endArray();
             settings.endGroup();
         settings.endGroup();
     }

     static QString qt_TNameToQString(TName data) {
         if(utf16LETextCodec == 0)
             utf16LETextCodec = QTextCodec::codecForName("UTF-16LE");

         QByteArray tmpByteArray = QByteArray::fromRawData((char*)(data.PtrZ()), data.Length() * 2);
         return utf16LETextCodec->toUnicode(tmpByteArray);
     }

     static QString qt_InterfaceInfoL()
     {
         QString output;

         TBuf8<512> buffer;
         TBuf<128> t;
         TAutoClose<RSocketServ> ss;
         User::LeaveIfError(ss.iObj.Connect());
         ss.PushL();

         TAutoClose<RSocket> sock;
         User::LeaveIfError(sock.iObj.Open(ss.iObj, _L("udp")));
         sock.PushL();

         User::LeaveIfError(sock.iObj.SetOpt(KSoInetEnumInterfaces, KSolInetIfCtrl));

         TProtocolDesc in;
         User::LeaveIfError(sock.iObj.Info(in));
         printf("EPOC32 IP Configuration TCPIP Version %d.%d.%d\n", in.iVersion.iMajor, in.iVersion.iMinor, in.iVersion.iBuild);

         TPckgBuf<TSoInetInterfaceInfo> info, next;

         TInt res=sock.iObj.GetOpt(KSoInetNextInterface, KSolInetIfCtrl, info);
         if(res!=KErrNone)
             User::Leave(res);
         TInt count = 0;
         while(res==KErrNone) {
             res=sock.iObj.GetOpt(KSoInetNextInterface, KSolInetIfCtrl, next);

             if(info().iName != _L("") && info().iName != _L("loop6") && info().iName != _L("loop4")) {
                 printf("Interface %d\n", count++);

                 printf("Name \"%s\"\n", qt_TNameToQString(info().iName).toLatin1().data());
                 printf("NIF tag \"%s\"\n", qt_TNameToQString(info().iTag).toLatin1().data());

                 printf("State ");
                 switch (info().iState)
                 {
                     case EIfPending:
                         printf("pending\n");
                         break;
                     case EIfUp:
                         printf("up\n");
                         break;
                     case EIfBusy:
                         printf("busy\n");
                         break;
                     default:
                         printf("down\n");
                         break;
                 }

                 printf("Mtu %d\n", info().iMtu);
                 printf("Speed Metric %d\n", info().iSpeedMetric);

                 printf("Features:");
                 info().iFeatures & KIfIsLoopback         ? printf(" loopback") : printf("");
                 info().iFeatures & KIfIsDialup           ? printf(" dialup") : printf("");
                 info().iFeatures & KIfIsPointToPoint     ? printf(" pointtopoint") : printf("");
                 info().iFeatures & KIfCanBroadcast       ? printf(" canbroadcast") : printf("");
                 info().iFeatures & KIfCanMulticast       ? printf(" canmulticast") : printf("");
                 info().iFeatures & KIfCanSetMTU          ? printf(" cansetmtu") : printf("");
                 info().iFeatures & KIfHasHardwareAddr    ? printf(" hardwareaddr") : printf("");
                 info().iFeatures & KIfCanSetHardwareAddr ? printf(" cansethardwareaddr") : printf("");
                 printf("\n");

                 TName address;
                 info().iAddress.Output(address);
                 printf("Addr: %s\n", qt_TNameToQString(address).toLatin1().data());

                 if(info().iAddress.IsLinkLocal()) {
                     printf("  -link local\n");
                 } else if(info().iAddress.IsSiteLocal()) {
                     printf("  -site local\n");
                 } else {
                     printf("  -global\n");
                 }

                 info().iNetMask.Output(address);
                 printf("Netmask %s\n", qt_TNameToQString(address).toLatin1().data());

                 info().iBrdAddr.Output(address);
                 printf("Broadcast address %s\n", qt_TNameToQString(address).toLatin1().data());

                 info().iDefGate.Output(address);
                 printf("Gatew: %s\n", qt_TNameToQString(address).toLatin1().data());

                 info().iNameSer1.Output(address);
                 printf("DNS 1: %s\n", qt_TNameToQString(address).toLatin1().data());

                 info().iNameSer2.Output(address);
                 printf("DNS 2: %s\n", qt_TNameToQString(address).toLatin1().data());

                 if (info().iHwAddr.Family() != KAFUnspec) {
                     printf("Hardware address ");
                     TUint j;
                     for(j = sizeof(SSockAddr) ; j < sizeof(SSockAddr) + 6 ; ++j) {
                         if(j < (TUint)info().iHwAddr.Length()) {
                             printf("%02X", info().iHwAddr[j]);
                         } else {
                             printf("??");
                         }
                         if(j < sizeof(SSockAddr) + 5)
                             printf("-");
                         else
                             printf("\n");
                         }
                     }
                 }
             if(res == KErrNone) {
                 info = next;
                 printf("\n");
             } else {
                 printf("\n");
             }
         }

         sock.Pop();
         ss.Pop();

         return output;
     }

     static QString qt_RouteInfoL() {
         QString output;
         TAutoClose<RSocketServ> ss;
         User::LeaveIfError(ss.iObj.Connect());
         ss.PushL();

         TAutoClose<RSocket> sock;
         User::LeaveIfError(sock.iObj.Open(ss.iObj, _L("udp")));
         sock.PushL();

         TSoInetRouteInfo routeInfo;
         TPckg<TSoInetRouteInfo> routeInfoPkg(routeInfo);

         TName destAddr;
         TName netMask;
         TName gateway;
         TName ifAddr;

         // Begins enumeration of routes by setting this option
         User::LeaveIfError(sock.iObj.SetOpt(KSoInetEnumRoutes, KSolInetRtCtrl));

         // The TSoInetRouteInfo contains information for a new route each time GetOpt returns KErrNone
         for(TInt i = 0; sock.iObj.GetOpt(KSoInetNextRoute, KSolInetRtCtrl, routeInfoPkg) == KErrNone ; i++)
         {
           // Extract the destination and netmask
           routeInfo.iDstAddr.Output(destAddr);
           routeInfo.iNetMask.Output(netMask);
           routeInfo.iGateway.Output(gateway);
           routeInfo.iIfAddr.Output(ifAddr);
     /*
           if(destAddr.Length() <= 2)
               continue;

           if(netMask.Find(_L("255.255.255.255")) != KErrNotFound
                   || netMask.Find(_L("0.0.0.0")) != KErrNotFound
                   || netMask.Find(_L("ffff:ffff:ffff:ffff")) != KErrNotFound)
               continue;
     */
           printf("Route Info #[%i]\n", i);
           printf("DstAddr %s\n", qt_TNameToQString(destAddr).toLatin1().data());
           printf("NetMask %s\n", qt_TNameToQString(netMask).toLatin1().data());
           printf("Gateway %s\n", qt_TNameToQString(gateway).toLatin1().data());
           printf("IfAddr %s\n", qt_TNameToQString(ifAddr).toLatin1().data());
           printf("\n");
         }

         sock.Pop();
         ss.Pop();

         return output;
     }

     QString qt_TDesC2QStringL(const TDesC& aDescriptor)
     {
     #ifdef QT_NO_UNICODE
         return QString::fromLocal8Bit(aDescriptor.Ptr(), aDescriptor.Length());
     #else
         return QString::fromUtf16(aDescriptor.Ptr(), aDescriptor.Length());
     #endif
     }

     static bool qt_SetDefaultIapName(const QString &iapName, int &error) {
         struct ifreq ifReq;
         // clear structure
         memset(&ifReq, 0, sizeof(struct ifreq));
         // set IAP name value
         // make sure it is in UTF8
         strcpy(ifReq.ifr_name, iapName.toUtf8().data());

         if(setdefaultif(&ifReq) == 0) {
             // OK
             error = 0;
             return true;
         } else {
             error = errno;
             return false;
         }

     }
     static bool qt_SetDefaultSnapId(const int snapId, int &error) {
         struct ifreq ifReq;
         // clear structure
         memset(&ifReq, 0, sizeof(struct ifreq));
         // set SNAP ID value
         ifReq.ifr_ifru.snap_id = snapId;

         if(setdefaultif(&ifReq) == 0) {
             // OK
             error = 0;
             return true;
         } else {
             error = errno;
             return false;
         }

     }

     static void qt_SaveIapName(QSettings& settings, QStringList& iapNames, QString& iapNameValue) {
         if(iapNames.contains(iapNameValue) && iapNames.first() == iapNameValue) {
             // no need to update
         } else {
             if(iapNameValue != QString("Easy WLAN")) {
                 // new selection alway on top
                 iapNames.removeAll(iapNameValue);
                 iapNames.prepend(iapNameValue);
                 writeIapNamesSettings(settings, iapNames);
             } else {
                 // Unbeliveable ... if IAP dodn't exist before
                 // no matter what you choose from IAP selection list
                 // you will get "Easy WLAN" as IAP name value

                 // somehow commsdb is not in sync
             }
         }
     }

     static QString qt_OfferIapDialog() {
         TBuf8<256> iapName;

         RSocketServ socketServ;
         CleanupClosePushL(socketServ);

         RConnection connection;
         CleanupClosePushL(connection);

         socketServ.Connect();
         connection.Open(socketServ);
         connection.Start();

         connection.GetDesSetting(TPtrC(KIapNameSetting), iapName);

         //connection.Stop();

         iapName.ZeroTerminate();
         QString strIapName((char*)iapName.Ptr());

         int error = 0;
         if(!qt_SetDefaultIapName(strIapName, error)) {
             //printf("failed setdefaultif @ %i with %s and errno = %d \n", __LINE__, strIapName.toUtf8().data(), error);
             strIapName = QString("");
         }

         CleanupStack::PopAndDestroy(&connection);
         CleanupStack::PopAndDestroy(&socketServ);

         return strIapName;
     }

     static QString qt_CheckForActiveConnection() {
         TUint count;

         RSocketServ serv;
         CleanupClosePushL(serv);

         RConnection conn;
         CleanupClosePushL(conn);

         serv.Connect();
         conn.Open(serv);

         TConnectionInfoBuf connInfo;

         TBuf8<256> iapName;
         TBuf8<256> iapServiceType;

         QString strIapName;

         if (conn.EnumerateConnections(count) == KErrNone) {
             if(count > 0) {
                 for (TUint i = 1; i <= count; i++) {
                     if (conn.GetConnectionInfo(i, connInfo) == KErrNone) {
                         RConnection tempConn;
                         CleanupClosePushL(tempConn);
                         tempConn.Open(serv);
                         if (tempConn.Attach(connInfo, RConnection::EAttachTypeNormal) == KErrNone) {
                            tempConn.GetDesSetting(TPtrC(KIapNameSetting), iapName);
                            tempConn.GetDesSetting(TPtrC(KIapServiceType), iapServiceType);
                            //tempConn.Stop();
                            iapName.ZeroTerminate();
                                    iapServiceType.ZeroTerminate();

     //                        if(iapServiceType.Find(_L8("LANService")) != KErrNotFound) {
     //                            activeLanConnectionFound = ETrue;
     //                            break;
     //                        }
                                         strIapName = QString((char*)iapName.Ptr());
                             int error = 0;
                             if(!qt_SetDefaultIapName(strIapName, error)) {
                                 //printf("failed setdefaultif @ %i with %s and errno = %d \n", __LINE__, strIapName.toUtf8().data(), error);
                                 strIapName = QString("");
                             }

                             CleanupStack::PopAndDestroy(&tempConn);
                             break;
                         }
                     }
                 }
             }
         }

         //conn.Stop();

         CleanupStack::PopAndDestroy(&conn);
         CleanupStack::PopAndDestroy(&serv);

         return strIapName;
     }

     static QString qt_CheckSettingsForConnection(QStringList& iapNames) {
         QString strIapName;
         for(int index = 0; index < iapNames.size(); ++index) {
             strIapName = iapNames.at(index);
             int error = 0;
             if(!qt_SetDefaultIapName(strIapName, error)) {
                 //printf("failed setdefaultif @ %i with %s and errno = %d \n", __LINE__, strIapName.toUtf8().data(), error);
                 strIapName = QString("");
             } else {
                 return strIapName;
             }
         }
         return strIapName;
     }

     static void qt_SetDefaultIapL()
     {
         // settings @ /c/data/.config/Trolltech.com
         QSettings settings(QSettings::UserScope, qtOrganizationTag);
         // populate iap name list
         QStringList iapNames;
         readIapNamesSettings(settings, iapNames);

         QString iapNameValue;

         iapNameValue = qt_CheckForActiveConnection();

         if(!iapNameValue.isEmpty()) {
             qt_SaveIapName(settings, iapNames, iapNameValue);
             return;
         }

         iapNameValue = qt_CheckSettingsForConnection(iapNames);

         if(!iapNameValue.isEmpty()) {
             qt_SaveIapName(settings, iapNames, iapNameValue);
             return;
         }

         /*
          * no active LAN connections yet
          * no IAP in settings
          * offer IAP dialog to user
          */
         iapNameValue = qt_OfferIapDialog();
         qt_SaveIapName(settings, iapNames, iapNameValue);
         return;

     }

     static int qt_SetDefaultIap()
     {
     #ifndef __WINS__
         TRAPD(err1, qt_SetDefaultIapL());
     //    TRAPD(err2, qt_InterfaceInfoL());
     //    TRAPD(err3, qt_RouteInfoL());
         return err1;
     #else
         return 0; // IAP dialog not required for emulator
     #endif
     }

     #endif // QSYM_IAP_UTIL_H