/*
 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
 * All rights reserved.
 * This component and the accompanying materials are made available
 * under the terms of "Eclipse Public License v1.0"
 * which accompanies this distribution, and is available
 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
 *
 * Initial Contributors:
 * Nokia Corporation - initial contribution.
 *
 * Contributors:
 *
 * Description:  ApnSettings.app
 *
 */

#include <es_enum.h>
#include <es_sock.h>
#include <in_sock.h>
#include "socketlocalhostinfo.h"
#include "logger.h"
#include "connectionmanager.h"

int GetlocalIPAdressL(char *localaddr, int aMidletIapId, int aApType);

int SocketLocalHostInfo::getLocalAddress(int /* aSd */, char *aLocalAddr,
        int aMidletIapId, int aApType)
{
    TRAPD(err,GetlocalIPAdressL(aLocalAddr,aMidletIapId, aApType););
    return err;

}

/**
 *In Symbian, when a server connection is opened, it is not bound to any interface
 *so the openC calls returns "0.0.0.0" as the local address.
 *To fetch the proper address (as in native apps), we check for any active connection(s)
 *on the device. If there is an active con and is same as midlet configured AP or device default AP
 *then the IP address of that interface is fetched and returned.
 */

int GetlocalIPAdressL(char *localaddr, int aMidletIapId, int aType)
{
    JELOG2(ESOCKET);

    TUint32 activeIapId = 0;
    TConnectionInfoBuf connectionInfo;
    TUint count = 0;
    bool flg = false;
    RSocketServ socketServ;
    RSocket sock;
    RConnection conn;

    User::LeaveIfError(socketServ.Connect());
    User::LeaveIfError(sock.Open(socketServ, KAfInet, KSockStream,
                                 KProtocolInetTcp));
    User::LeaveIfError(conn.Open(socketServ));
    User::LeaveIfError(conn.EnumerateConnections(count));

    ILOG1(ESOCKET, "Active connections count = %d ", count);
    strcpy(localaddr, "0.0.0.0");
    if (count <= 0)
    {
        // no active connections on the device , return "0.0.0.0"
        return KErrNone;
    }
    else
    {
        // We have an active connection

        for (int j = 1; j <= count; j++)    // loop thru all active connection(s)
        {
            User::LeaveIfError(conn.GetConnectionInfo(j, connectionInfo));
            activeIapId = connectionInfo().iIapId;
            ILOG1(ESOCKET, "Active connection iap id = %d ", activeIapId);
            if (aType > 0)
            {
                switch (aType)
                {
                case 2:
                    flg = ConnectionManager::isIapDefault(activeIapId, aMidletIapId,false);
                    if (!flg)
                        continue;
                    break;
                case 3:
                    if (activeIapId != aMidletIapId)
                        continue; // go to the next active IAP
                    break;
                default:
                    break;
                }


            }
            else
            {
                // no access point configured for the midlet, check system default
                bool flag = ConnectionManager::isIapDefault(activeIapId, 0);
                ILOG1(ESOCKET, "Connection Manager isIapDefault returned %d ",
                      flag);
                if (!flag)
                    continue; // go to the next active IAP
            }

            //  find the ip address of the active interface

            TSoInetInterfaceInfo ifInfo;
            TPckg<TSoInetInterfaceInfo> ifInfoPkg(ifInfo);
            TSoInetIfQuery ifQuery;
            TPckg<TSoInetIfQuery> ifQueryPkg(ifQuery);
            // To find out which interfaces are using our current IAP, we must
            // enumerate and go through all of them and make a query by name for each.
            ILOG(ESOCKET, "Looping thru all the destinations and ap \n\n");
            User::LeaveIfError(sock.SetOpt(KSoInetEnumInterfaces,
                                           KSolInetIfCtrl));
            while (sock.GetOpt(KSoInetNextInterface, KSolInetIfCtrl, ifInfoPkg)
                    == KErrNone)
            {
                ifQuery.iName = ifInfo.iName;
                TInt err = sock.GetOpt(KSoInetIfQueryByName, KSolInetIfQuery,
                                       ifQueryPkg);

                if ((err == KErrNone) && (ifQuery.iZone[1] == activeIapId))
                {
                    //TUint32 t5 = (TUint32)(ifQuery.iZone[15]);                    
                    ILOG2(ESOCKET, "Network id = %d, IAP id = %d ",(TUint32)(ifQuery.iZone[15]),(TUint32)ifQuery.iZone[1]);
                    
                    // IAP ID is index 1 of iZone
                    // We have found an interface using the IAP we are interested in.
                    if (ifInfo.iAddress.Address() > 0)
                        if (!ifInfo.iAddress.IsUnspecified()
                                && !ifInfo.iAddress.IsLoopback()
                                && !ifInfo.iAddress.IsLinkLocal())
                        {
                            // found a IPv4 address
                            TBuf8<20> aIP8;
                            TBuf<20> aIP;
                            TInetAddr aAddr;
                            aAddr = ifInfo.iAddress;
                            aAddr.ConvertToV4();
                            aAddr.Output(aIP);
                            aIP8.Copy(aIP);

                            strncpy(localaddr, (char*) aIP8.Ptr(),
                                    aIP8.Length());
                            localaddr[aIP8.Length()] = '\0';
                            ILOG1(ESOCKET, "GetlocalIPAdressL , ip = %s",
                                  localaddr);
                            sock.Close();
                            return KErrNone;
                        }
                }
                else if (err != KErrNone)
                {
                    sock.Close();
                    return err; // return with error
                }
            } // end while
        } // end for loop

    } // end else active connection

    sock.Close();
    return KErrNotFound; // return with KErrNotFound


}