656 lines
15 KiB
C++
656 lines
15 KiB
C++
//#--------------------------------------------------------------
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//
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// File: proxystate.cpp
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//
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// Synopsis: Implementation of CProxyState class methods
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//
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//
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// History: 10/16/97 MKarki Created
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// 08/28/98 MKarki Updated to use perimeter class
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//
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// Copyright (C) 1997-98 Microsoft Corporation
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// All rights reserved.
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//
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//----------------------------------------------------------------
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#include "radcommon.h"
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#include "proxystate.h"
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//++--------------------------------------------------------------
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//
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// Function: CProxyState
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//
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// Synopsis: This is CProxyState class constructor
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//
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// Arguments: NONE
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//
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// Returns: NONE
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//
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//
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// History: MKarki Created 10/16/97
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//
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//----------------------------------------------------------------
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CProxyState::CProxyState()
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{
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m_dwTableIndex = 0;
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m_pProxyStateTable = NULL;
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return;
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} // end of CProxyState constructor
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//++--------------------------------------------------------------
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//
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// Function: ~CProxyState
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//
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// Synopsis: This is CProxyState class destructor
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//
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// Arguments: NONE
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//
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// Returns: NONE
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//
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//
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// History: MKarki Created 10/16/97
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//
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//----------------------------------------------------------------
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CProxyState::~CProxyState()
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{
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if (m_pProxyStateTable)
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{
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HeapFree (GetProcessHeap (), 0, m_pProxyStateTable);
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}
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return;
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} // end of CProxyState destructor
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//++--------------------------------------------------------------
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//
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// Function: Init
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//
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// Synopsis: This is CProxyState class public method used
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// for initializing the class object
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//
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// Arguments:
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// [in] DWORD - proxy state hash table size
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//
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// Returns: BOOL - status
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//
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//
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// History: MKarki Created 11/24/97
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//
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//----------------------------------------------------------------
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BOOL
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CProxyState::Init (
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DWORD dwIPAddress,
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DWORD dwTableSize
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)
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{
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BOOL bRetVal = FALSE;
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__try
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{
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if ((0 == dwIPAddress) || (0 == dwTableSize))
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__leave;
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//
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// initialize the table
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//
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m_pProxyStateTable = static_cast <CProxyInfo**>
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(HeapAlloc (
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GetProcessHeap (),
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0,
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dwTableSize*sizeof (CProxyInfo*)
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));
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if (NULL == m_pProxyStateTable) { __leave; }
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m_dwTableIndex = 0;
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m_dwTableSize = dwTableSize;
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//
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// initialize the IP address
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//
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m_dwIPAddress = dwIPAddress;
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//
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// DEBUGGING CODE START
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//
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/*
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BYTE ClientAuthenticator[AUTHENTICATOR_SIZE];
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BYTE ProxyAuthenticator[AUTHENTICATOR_SIZE];
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DWORD dwClientAddress = 0;
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WORD wClientPort = 0;
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ZeroMemory (ProxyAuthenticator, AUTHENTICATOR_SIZE);
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ProxyAuthenticator[0] = 24;
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CProxyInfo *pCProxyInfo = new CProxyInfo;
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pCProxyInfo->Init (
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ClientAuthenticator,
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ProxyAuthenticator,
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dwClientAddress,
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wClientPort
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);
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m_pProxyStateTable[m_dwTableIndex++] = pCProxyInfo;
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*/
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//
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// DEBUGGING CODE ENDS
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//
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//
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// initialization successfull
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//
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bRetVal = TRUE;
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}
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__finally
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{
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//
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// nothing here for now
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//
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if ((FALSE == bRetVal) && (NULL != m_pProxyStateTable))
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{
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HeapFree (GetProcessHeap (), 0, m_pProxyStateTable);
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}
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}
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return (bRetVal);
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} // end of CProxyState::Init method
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//++--------------------------------------------------------------
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//
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// Function: SetProxyStateInfo
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//
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// Synopsis: This is CProxyState class public method used
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// for setting the Proxy state information, once
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// you have received the attribute
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//
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//
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// Arguments:
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// [in] - CPacketRadius*
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// [in] DWORD - state id
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//
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// Returns: BOOL status
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//
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// History: MKarki Created 10/16/97
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//
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//----------------------------------------------------------------
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BOOL CProxyState::SetProxyStateInfo(
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CPacketRadius *pCPacketRadius,
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DWORD dwProxyStateId,
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PBYTE pbyProxyReqAuthenticator
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)
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{
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BYTE ClientAuthenticator[AUTHENTICATOR_SIZE];
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DWORD dwClientAddress = 0;
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WORD wClientPort = 0;
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BOOL bRetVal = FALSE;
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CProxyInfo *pCProxyInfo = NULL;
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BOOL bStatus = FALSE;
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/*
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__try
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{
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if ((dwProxyStateId > m_dwTableSize) ||
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(NULL == pCPacketRadius)||
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(NULL == pbyProxyReqAuthenticator)
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)
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{ __leave; }
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//
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// extract the NAS authenticator from the packet
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//
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bStatus = pCPacketRadius->GetInRequestAuthenticator (
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reinterpret_cast <PBYTE> (ClientAuthenticator)
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);
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if (FALSE == bStatus)
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__leave;
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//
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// get the NAS IP address
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//
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dwClientAddress = pCPacketRadius->GetInAddress ();
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//
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// get the NAS UDP port
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//
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wClientPort = pCPacketRadius->GetPort ();
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//
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// get a new CProxyInfo class object
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//
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pCProxyInfo = new CProxyInfo ();
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if (NULL == pCProxyInfo)
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__leave;
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//
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// set the values in the object now
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//
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bStatus = pCProxyInfo->Init (
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ClientAuthenticator,
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pbyProxyReqAuthenticator,
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dwClientAddress,
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wClientPort
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);
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if (FALSE == bStatus) {__leave;}
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//
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// lock the ProxyStateTable for write
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//
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LockExclusive ();
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//
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// insert the CProxyInfo object into the table
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//
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m_pProxyStateTable[dwProxyStateId] = pCProxyInfo;
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//
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// unlock the table now
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//
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Unlock ();
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//
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// we have successfully store the proxy information
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//
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bRetVal = TRUE;
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}
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__finally
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{
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}
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*/
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return (bRetVal);
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} // end of CProxyState::SetProxyInfo method
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//++--------------------------------------------------------------
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//
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// Function: GenerateProxyState
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//
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// Synopsis: This is CProxyState class public method used
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// to generate a proxy state RADIUS attribute to
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// be added to the outbound packet
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//
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// Arguments:
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// [in] CPacketRadius*
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// [out] PDWORD - returns the Proxy state id
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//
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// Returns: BOOL - status
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//
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//
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// History: MKarki Created 11/24/97
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//
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//
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//----------------------------------------------------------------
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BOOL
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CProxyState::GenerateProxyState (
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CPacketRadius *pCPacketRadius,
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PDWORD pdwProxyStateId
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)
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{
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BOOL bRetVal = FALSE;
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BOOL bStatus = FALSE;
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DWORD dwCheckSum = 0;
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PROXYSTATE ProxyState;
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const DWORD PROXY_STATE_SIZE = sizeof (PROXYSTATE);
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DWORD dwSize = 0;
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/*
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__try
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{
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if ((NULL == pCPacketRadius) || (NULL == pdwProxyStateId))
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{
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__leave;
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}
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//
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// get a new attribute from CPacketRadius
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//
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bStatus = pCPacketRadius->CreateOutAttribute (
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&pCAttribute,
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PROXY_STATE_SIZE
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);
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if (FALSE == bStatus) { __leave; }
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if (dwSize < PROXY_STATE_SIZE) { __leave; }
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//
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// set Index value
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//
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LockExclusive ();
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ProxyState.dwIndex = htonl (m_dwTableIndex);
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m_dwTableIndex = (m_dwTableIndex + 1) % m_dwTableSize;
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Unlock ();
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//
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// set IP address
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//
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ProxyState.dwIPAddress = htonl (m_dwIPAddress);
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//
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// get check sum
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//
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bStatus = CalculateCheckSum (&ProxyState,&dwCheckSum);
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if (FALSE == bStatus)
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__leave;
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//
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// set checksum
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//
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ProxyState.dwCheckSum = htonl (dwCheckSum);
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//
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// set the attribute information
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//
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bStatus = pCAttribute->SetInfo (
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PROXY_STATE_ATTRIB,
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reinterpret_cast <PBYTE> (&ProxyState),
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PROXY_STATE_SIZE
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);
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if (FALSE == bStatus)
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__leave;
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//
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// store this CAttribute class object now
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//
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bStatus = pCPacketRadius->StoreOutAttribute (pCAttribute);
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if (FALSE == bStatus)
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__leave;
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//
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// set the proxy id to be returned
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//
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*pdwProxyStateId = ProxyState.dwIndex;
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//
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// attribute generated successfully
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//
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bRetVal = TRUE;
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}
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__finally
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{
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//
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// nothing here for now
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//
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}
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*/
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return (bRetVal);
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} // end of CProxyState::GenerateProxyState method
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//++--------------------------------------------------------------
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//
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// Function: Validate
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//
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// Synopsis: This is CProxyState class private method used
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// for carrying out validation of the proxy state
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// attribute
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//
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// Arguments:
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// [out] PROXYSTATE
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//
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// Returns: BOOL - status
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//
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//
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// History: MKarki Created 11/24/97
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//
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// Called By: CProxyState::GetProxyStateInfo method
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//
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//----------------------------------------------------------------
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BOOL
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CProxyState::Validate (
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PPROXYSTATE pProxyState
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)
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{
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BOOL bRetVal = FALSE;
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BOOL bStatus = FALSE;
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DWORD dwLength = 0;
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DWORD dwCalculatedCheckSum = 0;
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/*
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__try
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{
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if ((NULL == pCAttribute) || (NULL == pProxyState))
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{
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__leave;
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}
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//
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// get the length of the attribute
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//
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dwLength = pCAttribute->GetLength ();
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//
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// check if the length of the proxy state is equal
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// to what is should be
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//
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if ((dwLength - ATTRIBUTE_HEADER_SIZE) != sizeof (PROXYSTATE))
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{
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__leave;
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}
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//
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// get the proxy state value now
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//
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bStatus = pCAttribute->GetValue (
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reinterpret_cast <PBYTE> (pProxyState),
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&dwLength
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);
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if (FALSE == bStatus) { __leave; }
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//
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// calculate the check sum
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//
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bStatus = CalculateCheckSum (
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pProxyState,
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&dwCalculatedCheckSum
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);
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if (FALSE == bStatus) { __leave; }
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//
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// verify the check sum
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//
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if (dwCalculatedCheckSum != ntohl (pProxyState->dwCheckSum))
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{
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__leave;
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}
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//
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// verify IP address
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//
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if (m_dwIPAddress != ntohl (pProxyState->dwIPAddress)) { __leave;}
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//
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// validation successful
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//
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bRetVal = TRUE;
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}
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__finally
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{
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//
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// nothing here for now
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//
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}
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*/
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return (bRetVal);
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} // end of CProxyState::Validate method
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//++--------------------------------------------------------------
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//
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// Function: CalculateCheckSum
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//
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// Synopsis: This is CProxyState class private method used
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// for calculating the checksum over the stream
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// of bytes in the proxy state attributes
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//
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// Algo: We just do the XOR on 2 DWORDs for now
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// Arguments:
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// [in] PPROXYSTATE
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// [out] PDWORD - pdwCheckSum
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//
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// Returns: NONE
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//
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//
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// History: MKarki Created 10/16/97
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//
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// Called By: CProxyState::Validate method
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//
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//----------------------------------------------------------------
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BOOL
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CProxyState::CalculateCheckSum (
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PPROXYSTATE pProxyState,
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PDWORD pdwCheckSum
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)
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{
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DWORD dwCount = 0;
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BOOL bStatus = FALSE;
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BOOL bRetVal = FALSE;
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/*
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__try
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{
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if ((NULL == pProxyState) || (NULL == pdwCheckSum)) { __leave; }
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*pdwCheckSum = ntohl (pProxyState->dwIPAddress) ^
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ntohl (pProxyState->dwIndex);
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//
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// successfully calculated checksum
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//
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bRetVal = TRUE;
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}
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__finally
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{
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//
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// nothing here for now
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//
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}
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*/
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return (bRetVal);
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} // end of CProxyState::CalculateCheckSum method
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//++--------------------------------------------------------------
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//
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// Function: ValidateProxyState
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//
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// Synopsis: This is CProxyState class public method
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// that validates the proxy state returned by the
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// server
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//
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// Arguments: [in] - CPacketRadius*
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// [out] PBYTE - Proxy Request Authenticator
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//
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// Returns: BOOL - status
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//
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//
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// History: MKarki Created 9/28/97
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//
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// Called By: CValidatorProxyPkt::ValidateInPacket method
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//
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//----------------------------------------------------------------
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BOOL
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CProxyState::ValidateProxyState (
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CPacketRadius *pCPacketRadius,
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PBYTE pbyReqAuthenticator
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)
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{
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BOOL bStatus = FALSE;
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BOOL bRetVal = FALSE;
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/*
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__try
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{
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//
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// now get the attributes collection from the radius packet
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//
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pCAttribColl = pCPacketRadius->GetInAttributes ();
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//
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// get the last proxy attribute, as we append a proxy attribute
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// at the end
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//
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bStatus = pCAttribColl->GetLast (
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PROXY_STATE_ATTRIB,
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&pCAttrib
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);
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if (FALSE == bStatus) { __leave; }
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|
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//
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// validate the proxy state found
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//
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bStatus = GetProxyStateInfo (
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pCAttrib,
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pCPacketRadius,
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pbyReqAuthenticator
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);
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if (FALSE == bStatus)
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{
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//
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// if could not validate
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// find a new one and try again
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//
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while (TRUE)
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{
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bStatus = pCAttribColl->GetPrevious (
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PROXY_STATE_ATTRIB,
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&pCAttrib
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);
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if (FALSE == bStatus) { __leave; }
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bStatus = GetProxyStateInfo (
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pCAttrib,
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pCPacketRadius,
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pbyReqAuthenticator
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);
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if (TRUE == bStatus) {break;}
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}
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}
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//
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// we have successfully validated the proxy state
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//
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bRetVal = TRUE;
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} // __try
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__finally
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{
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//
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// nothing here for now
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//
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}
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*/
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return (bRetVal);
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} // end of CProxyState::ValidateProxyState method
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