vpnengine/ikev1lib/inc/ikev1private.h
author Simon Howkins <simonh@symbian.org>
Tue, 16 Nov 2010 11:03:59 +0000
branchRCL_3
changeset 52 efc64fd8bd10
parent 0 33413c0669b9
permissions -rw-r--r--
Fixed path to IBY files to be exported
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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* This module contains the private vendor specific extension of IKE.
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* All of the current private extensions are related to Nokia VPN gateway
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* and shall be used ONLY when the EPOC IKE is acting as a Nokia VPN remote
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* access client.
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* The following private extension are implemented:
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*
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* 1) Internal Address payload usage
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*    Internal address payload is used to the deliver a secure network
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*    adderess and secure network DNS address(es) from VPN gateway to a client.
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*    The Internal address payloads are used in the last two IKE main mode
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*    messages as follows:
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*
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*    Client (initiator)                           Gateway (responder)
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*    .. SA, KE ...             --->
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*                              <---               ..SA, KE ...
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*    HDR*, INT_ADDR            --->
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*                              <---               HDR*, INT_ADDR
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*
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*    Client sends an INT_ADDR payload with PRI_INTERNAL_ADDRESS attribute
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*    Attribute value is 0.0.0.0.
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*
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*    Gateway responds with an INT_ADDR payload with PRI_INTERNAL_ADDRESS
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*    attribute containing client internal address x.y.z.w
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*    Gateway INT_ADDR payload may also contain attributes PRI_INTERNAL_DNS and
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*    PRI_INTERNAL_WINS. PRI_INTERNAL_DNS contains a list of DNS IP addresses and
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*    PRI_INTERNAL_WINS a list of WINS IP addresses.
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*        
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*
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* 2) The NAT Traversal probing
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*    The expanded Vendor-Id payload usage for the NAT Traversal probing.
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*    The expanded Vendor-Id payloads contains the following information:
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*
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*    Client (initiator)                           Gateway (responder)
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*    VID(hash, ip_addr, port)  --->
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*                              <---               VID(hash, detected_ip_addr,
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*                                                           detected_port)
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* 
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*    Client sends a expanded Vendor-Id payload containing the following information:
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*    hash    = Nokia VPN vendor specific hash data (used to recognize peer)
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*    ip_addr = Client IKE own IP address
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*    port    = Client IKE own port (=500)
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*
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*    Gateway responds with expanded Vendor-Id payload containing the following information:
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*    hash    = Nokia VPN vendor specific hash data (used to recognize peer)
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*    detected_ip_addr = Client IP address as detected in received IKE message
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*                       IP header (=source IP address)
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*    detected_port    = Client port as detected in received IKE message
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*                       UDP header (=source port)
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*
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*    Both client and gateway do the following examination
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*    if ( ip_addr != detected_ip_addr ) || ( port != detected_port )
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*    then NAT Traversal shall be used IPSEC ESP traffic between
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*    the client and gateway
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*
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*    Nokia VPN specific NAT Traversal means that IPSEC ESP traffic shall be
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*    capsulated with UDP header.
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*    The used UDP port for that purpose is 9872
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*/
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#ifndef IKEV1PRIVATE_H
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#define IKEV1PRIVATE_H
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#include <f32file.h>
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#include "ikemsgheader.h"
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class TIkev1IsakmpStream;
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class CIkeIPSocket;
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class CIkeData;
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class TVendorISAKMP;
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class TINTNETISAKMP;
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class CInternalAddress;
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class TInetAddr;
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TInt ConstructVendorId(TBool  aNATProbe,
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                       TUint8 *aICOOKIE,
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                       TUint8 *aRCOOKIE,
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                       TInetAddr &aLocalAddr,
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                       TVendorISAKMP *vendor_payload);
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TInt BuildVendorIdHash(TUint8 *aICOOKIE,
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                       TUint8 *aRCOOKIE,
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                       TUint8 *hash_data);
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TBool ProcessVendorId(TBool  *aFamiliarPeer,
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                      TUint8 *aICOOKIE,
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                      TUint8 *aRCOOKIE,
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                      TInetAddr &aLocalAddr,
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                      TVendorISAKMP *aVendorPayload);
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void BuildDPDVendorId(TIkev1IsakmpStream &aMsg);
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TBool CheckDPDVendorId(const TVendorISAKMP *aVendorPayload);
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CInternalAddress* ProcessIntNetL(TINTNETISAKMP *aIntNetpayload);
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TBool InsertVPNInterfaceL(CInternalAddress *aInternalAddr, CIkeIPSocket *aSocket, TUint32 *aIfNbr, RFs *aFS);
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TBool RemoveVPNInterfaceL(CInternalAddress *aInternalAddr, CIkeIPSocket *aSocket, TUint32 *aIfNbr, RFs *aFS);
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TBool AddVPNRoute(CInternalAddress *aInternalAddr, CIkeIPSocket *aSocket,
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                  TInetAddr &aDstAddr, TInetAddr &aDstMask);
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TInt CheckCredentials(CIkeData *aHostData);
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/*---------------------------------------------------------------------------
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 *
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 *  Expanded Vendor Id payload option VENDOR_OPTION_NAT_TRAVERSAL handling:
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 *                      1                   2                   3
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 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 *  !    sin_lth    !   sin_family  !           sin_port            !
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 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 *  !                        sin_addr                               !
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 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 *  !                                                               !
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 *  .                     Zero * 2(?)                               .
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 *  !                                                               ! 
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 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 *
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 *
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 *---------------------------------------------------------------------------*/
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#define SIN_LTH        16   // VENDOR_OPTION_NAT_TRAVERSAL data part length
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#define SIN_FAMILY      2   // = IPv4 Address 
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class TNATTOption
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    {
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public:
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    inline void InitOption() { Mem::FillZ(&u.iData8[0], SIN_LTH);
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                               u.iData8[0] = SIN_LTH; u.iData8[1] = SIN_FAMILY;}
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    inline void SetPort(TUint16 aPort) { PUT16(&u.iData8[2], aPort);}   
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    inline void SetAddress(TUint32 aAddr) { PUT32(&u.iData8[4], aAddr);}
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    inline TUint16 GetPort() {return (TUint16)GET16(&u.iData8[2]);} 
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    inline TUint32 GetAddress() {return (TUint32)GET32(&u.iData8[4]);}  
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private:
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    union
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        {
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        TUint32 iData32[4];
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        TUint16 iData16[8];
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        TUint8  iData8[16];
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        } u;
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    };
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/*---------------------------------------------------------------------------
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 *
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 *  Expanded Vendor Id payload option VENDOR_OPTION_VERSION handling:
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 *                      1                   2                   3
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 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 
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 *  !        MAJOR VERSION          !         MINOR VERSION         !
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 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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  *
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 *---------------------------------------------------------------------------*/
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#define VERSION_LTH     4   // VENDOR_OPTION_VERSION data part length
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#define MAJOR_VERSION   3   // ???????????!!!!!!!!!!!!!!!!????????????
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#define MINOR_VERSION   3   // ???????????!!!!!!!!!!!!!!!!????????????
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class TVersionOption
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    {
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public:
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    inline void SetVersion(TUint16 aMajor,
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                           TUint16 aMinor) { PUT16(&u.iData8[0], aMajor);
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                                             PUT16(&u.iData8[2], aMinor);}   
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private:
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    union
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        {
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        TUint32 iData32[1];
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        TUint16 iData16[2];
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        TUint8  iData8[4];
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        } u;
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    };
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#endif // IKEV1PRIVATE_H