174 lines
4.5 KiB
C++
174 lines
4.5 KiB
C++
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//##--------------------------------------------------------------
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//
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// File: portparser.cpp
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//
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// Synopsis: Implementation of CPortParser class responsible
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// for obtaining port information for the Radius
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// protocol component
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//
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//
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// History: 10/22/98 MKarki Created
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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 <ias.h>
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#include <winsock2.h>
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#include <portparser.h>
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//
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// delimiters defined here
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//
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const WCHAR TOKEN_DELIMITER = L':';
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const WCHAR OBJECT_DELIMITER = L';';
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const WCHAR PORT_DELIMITER = L',';
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const WCHAR NUL = L'\0';
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//
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// maximum port value
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//
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const DWORD MAX_PORT_VALUE = 0xffff;
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//++--------------------------------------------------------------
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//
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// Function: GetIPAddress
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//
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// Synopsis: This is CPortParser class public method which
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// gets the IP Address from the string
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//
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// Arguments: [in] PDWORD - return IP Address
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//
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// Returns: HRESULT
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//
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// History: MKarki Created 10/22/97
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//
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//----------------------------------------------------------------
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HRESULT CPortParser::GetIPAddress (PDWORD pdwIPAddress) throw ()
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{
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HRESULT hr = S_OK;
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_ASSERT (current && pdwIPAddress);
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if (NUL == *m_pEnd) {return (S_FALSE);}
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try
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{
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current = m_pObjstart = m_pEnd;
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for (; NUL != *m_pEnd; ++m_pEnd)
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{
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if (OBJECT_DELIMITER == *m_pEnd)
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{
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++m_pEnd;
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break;
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}
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}
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if ((NUL == *seekNext (TOKEN_DELIMITER)) || (current >= m_pEnd))
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{
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//
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// no IP address
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//
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*pdwIPAddress = INADDR_ANY;
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m_pPort = m_pObjstart;
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}
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else
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{
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//
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// convert the IP address from WideChar to MultiByte
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//
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INT iSize = static_cast <INT> (current - m_pObjstart);
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CHAR szIPAddress[ADDRESS_BUFFER_SIZE +1];
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INT iRetVal = ::WideCharToMultiByte (
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CP_ACP,
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0,
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reinterpret_cast <LPCWSTR> (m_pObjstart),
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iSize,
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szIPAddress,
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ADDRESS_BUFFER_SIZE,
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NULL,
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NULL
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);
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if (0 != iRetVal)
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{
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szIPAddress[iSize] = NUL;
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*pdwIPAddress = inet_addr (szIPAddress);
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if (INADDR_NONE == *pdwIPAddress)
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{
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IASTracePrintf (
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"Unable to obtain IP address through inet_addr "
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"while parsing interface and port info"
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);
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hr = E_FAIL;
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}
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}
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else
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{
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IASTracePrintf (
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"Unable to convert IP Address to multi-byte string"
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);
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hr = E_FAIL;
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}
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m_pPort = (PWCHAR)(++current);
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}
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}
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catch (...)
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{
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}
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current = m_pObjstart;
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return (hr);
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} // end of CPortParser::GetIPAddress method
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//++--------------------------------------------------------------
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//
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// Function: GetNextPort
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//
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// Synopsis: This is CPortParser class public method which
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// gets the Next Port number from the string
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//
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// Arguments: [in] PDWORD - return Port
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//
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// Returns: HRESULT
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//
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// History: MKarki Created 10/22/97
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//
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//----------------------------------------------------------------
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HRESULT CPortParser::GetNextPort (PWORD pwPort) throw ()
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{
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HRESULT hr = S_FALSE;
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_ASSERT (current && pwPort);
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try
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{
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if ((NUL != *m_pPort) && (m_pPort != m_pEnd))
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{
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current = m_pPort;
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DWORD dwValue = extractUnsignedLong ();
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if (dwValue <= MAX_PORT_VALUE)
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{
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*pwPort = static_cast <USHORT> (dwValue);
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m_pPort = ((PORT_DELIMITER == *current) ||
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(OBJECT_DELIMITER == *current))?
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(PWCHAR)(++current):
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(PWCHAR)current;
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hr = S_OK;
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}
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else
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{
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hr = E_FAIL;
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}
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}
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}
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catch (...)
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{
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}
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current = m_pObjstart;
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return (hr);
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} // end of CPortParser::GetNextPort method
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