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860 lines
13 KiB
860 lines
13 KiB
/*++
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Copyright (c) 1994-1998 Microsoft Corporation
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Module Name :
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ipa.cpp
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Abstract:
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IP Address value and helper functions
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Author:
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Ronald Meijer (ronaldm)
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Project:
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Internet Services Manager
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Revision History:
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--*/
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//
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// Include Files
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//
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#include "stdafx.h"
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#include "comprop.h"
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#include <winsock2.h>
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/* static */
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DWORD
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CIPAddress::StringToLong(
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IN LPCTSTR lpstr,
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IN int nLength
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)
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/*++
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Routine Description:
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Static function to convert an ip address string of the form "1.2.3.4"
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to a a single 32 bit number.
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Arguments:
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LPCTSTR lpstr : String ip address
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int nLength : Length of string
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Return Value:
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32 bit ip address.
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--*/
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{
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DWORD dwIPValue = 0L;
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if (nLength > 0)
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{
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u_long ul;
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#ifdef UNICODE
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try
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{
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//
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// Convert to ANSI
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//
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LPSTR pszDest = AllocAnsiString(lpstr);
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ul = ::inet_addr(pszDest);
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FreeMem(pszDest);
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}
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catch(CException * e)
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{
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TRACEEOLID("!!!Exception converting string to ip address");
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e->ReportError();
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e->Delete();
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}
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#else
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ul = ::inet_addr(lpstr);
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#endif // UNICODE
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//
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// Convert to host byte order.
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//
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dwIPValue = (DWORD)::ntohl(ul);
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}
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return dwIPValue;
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}
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/* static */
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LPTSTR
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CIPAddress::LongToString(
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IN const DWORD dwIPAddress,
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OUT LPTSTR lpStr,
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IN int cbSize
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)
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/*++
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Routine Description:
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Static function to convert a 32 bit number to a CString of the format
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"1.2.3.4"
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Arguments:
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const DWORD dwIPAddress : 32 bit ip address to be converted to string
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LPTSTR lpStr : Destination string
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int cbSize : Size of destination string
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Return Value:
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Pointer to string buffer
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--*/
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{
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struct in_addr ipaddr;
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//
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// Convert the unsigned long to network byte order
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//
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ipaddr.s_addr = ::htonl((u_long)dwIPAddress);
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//
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// Convert the IP address value to a string
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//
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LPCSTR pchAddr = ::inet_ntoa(ipaddr);
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#ifdef UNICODE
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VERIFY(::MultiByteToWideChar(CP_ACP, 0L, pchAddr, -1, lpStr, cbSize));
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#else
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::lstrcpy(lpStr, pchAddr);
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#endif // UNICODE
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return lpStr;
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}
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/* static */
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LPCTSTR
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CIPAddress::LongToString(
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IN const DWORD dwIPAddress,
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OUT CString & str
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)
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/*++
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Routine Description:
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Static function to convert a 32 bit number to a CString of the format
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"1.2.3.4"
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Arguments:
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const DWORD dwIPAddress : 32 bit ip address to be converted to string
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CString & str : Destination string
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Return Value:
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Pointer to string buffer
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--*/
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{
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struct in_addr ipaddr;
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//
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// Convert the unsigned long to network byte order
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//
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ipaddr.s_addr = ::htonl((u_long)dwIPAddress);
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//
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// Convert the IP address value to a string
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//
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LPCSTR pchAddr = ::inet_ntoa(ipaddr);
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try
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{
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str = pchAddr;
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}
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catch(CMemoryException * e)
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{
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TRACEEOLID("!!!Exception converting ip address to string");
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e->ReportError();
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e->Delete();
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}
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return (LPCTSTR)str;
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}
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/* static */
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LPBYTE
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CIPAddress::DWORDtoLPBYTE(
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IN DWORD dw,
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OUT LPBYTE lpBytes
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)
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/*++
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Routine Description:
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Convert a DWORD to a byte array of 4 bytes. No size
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checking is performed.
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Arguments:
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DWORD dw : 32 bit ip address
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LPBYTE lpBytes : Byte stream
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Return Value:
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Pointer to the input buffer.
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--*/
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{
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lpBytes[0] = (BYTE)GETIP_FIRST(dw);
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lpBytes[1] = (BYTE)GETIP_SECOND(dw);
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lpBytes[2] = (BYTE)GETIP_THIRD(dw);
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lpBytes[3] = (BYTE)GETIP_FOURTH(dw);
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return lpBytes;
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}
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CIPAddress::CIPAddress()
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/*++
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Routine Description:
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Constructor
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Arguments:
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None
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Return Value:
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N/A
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--*/
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: m_dwIPAddress(0L)
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{
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}
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CIPAddress::CIPAddress(
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IN DWORD dwIPAddress,
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IN BOOL fNetworkByteOrder
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)
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/*++
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Routine Description:
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Constructor.
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Arguments:
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DWORD dwIPAddress : IP address value
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BOOL fNetworkByteOrder : if TRUE, value must be converted to host byte
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order, otherwise is assumed to already be in
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host byte order.
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Return Value:
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N/A
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--*/
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{
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if (fNetworkByteOrder)
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{
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//
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// Convert to host byte order
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//
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dwIPAddress = (DWORD)::ntohl((u_long)dwIPAddress);
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}
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m_dwIPAddress = dwIPAddress;
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}
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CIPAddress::CIPAddress(
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IN BYTE b1,
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IN BYTE b2,
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IN BYTE b3,
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IN BYTE b4
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)
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/*++
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Routine Description:
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Constructor.
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Arguments:
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BYTE b1 : First octet
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BYTE b2 : Second octet
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BYTE b3 : Third octet
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BYTE b4 : Fourth octet
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Return Value:
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N/A
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Notes:
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This is already assumed to be in host order
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--*/
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: m_dwIPAddress(MAKEIPADDRESS(b1, b2, b3, b4))
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{
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}
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CIPAddress::CIPAddress(
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IN LPBYTE lpBytes,
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IN BOOL fNetworkByteOrder OPTIONAL
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)
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/*++
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Routine Description:
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Construct from byte stream
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Arguments:
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LPBYTE lpBytes : Byte stream
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BOOL fNetworkByteOrder : TRUE if the byte stream is in network byte order
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Return Value:
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N/A
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--*/
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{
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}
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CIPAddress::CIPAddress(
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IN const CIPAddress & ia
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)
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/*++
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Routine Description:
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Copy Constructor.
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Arguments:
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const CIPAddress & ia
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Return Value:
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N/A
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--*/
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: m_dwIPAddress(ia.m_dwIPAddress)
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{
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}
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CIPAddress::CIPAddress(
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IN LPCTSTR lpstr,
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IN int nLength
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)
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/*++
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Routine Description:
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Constructor.
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Arguments:
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LPCTSTR lpstr : string ip value
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int nLength : length of string
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Return Value:
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N/A
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--*/
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{
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m_dwIPAddress = CIPAddress::StringToLong(lpstr, nLength);
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}
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CIPAddress::CIPAddress(
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const CString & str
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)
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/*++
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Routine Description:
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Constructor.
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Arguments:
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const CString & str : IP Address string
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Return Value:
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N/A
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--*/
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{
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m_dwIPAddress = CIPAddress::StringToLong(str);
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}
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const CIPAddress &
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CIPAddress::operator =(
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IN const CIPAddress & ia
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)
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/*++
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Routine Description:
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Assignment operator
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Arguments:
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const CIPAddress & ia : Source ip address
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Return Value:
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Current object
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--*/
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{
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m_dwIPAddress = ia.m_dwIPAddress;
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return *this;
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}
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const CIPAddress &
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CIPAddress::operator =(
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IN const DWORD dwIPAddress
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)
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/*++
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Routine Description:
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Assignment operator
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Arguments:
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const DWORD dwIPAddress : Source ip address
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Return Value:
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Current object
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--*/
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{
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m_dwIPAddress = dwIPAddress;
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return *this;
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}
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const CIPAddress &
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CIPAddress::operator =(
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IN LPCTSTR lpstr
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)
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/*++
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Routine Description:
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Assignment operator
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Arguments:
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LPCTSTR lpstr : Source string
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Return Value:
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Current object
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--*/
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{
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m_dwIPAddress = CIPAddress::StringToLong(lpstr, ::lstrlen(lpstr));
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return *this;
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}
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const CIPAddress &
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CIPAddress::operator =(
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IN const CString & str
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)
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/*++
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Routine Description:
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Assignment operator
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Arguments:
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const CString & str : Source string
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Return Value:
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Current object
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--*/
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{
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m_dwIPAddress = CIPAddress::StringToLong(str);
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return *this;
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}
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int
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CIPAddress::CompareItem(
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IN const CIPAddress & ia
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) const
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/*++
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Routine Description:
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Compare two ip addresses
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Arguments:
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const CIPAddress & ia : IP Address to compare this to
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Return Value:
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+1 if the current ip address is greater,
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0 if the two ip addresses are the same
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-1 if the current ip address is less,
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--*/
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{
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return (DWORD)ia < m_dwIPAddress
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? +1
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: (DWORD)ia == m_dwIPAddress
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? 0
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: -1;
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}
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CIPAddress::operator LPCTSTR() const
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/*++
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Routine Description:
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Conversion operator
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Arguments:
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N/A
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Return Value:
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Pointer to converted string
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--*/
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{
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static TCHAR szIPAddress[] = _T("xxx.xxx.xxx.xxx");
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return CIPAddress::LongToString(
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m_dwIPAddress,
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szIPAddress,
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ARRAY_SIZE(szIPAddress)
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);
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}
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CIPAddress::operator CString() const
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/*++
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Routine Description:
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Conversion operator
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Arguments:
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N/A
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Return Value:
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Converted string
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--*/
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{
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CString str;
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CIPAddress::LongToString(m_dwIPAddress, str);
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return str;
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}
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DWORD
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CIPAddress::QueryIPAddress(
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IN BOOL fNetworkByteOrder
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) const
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/*++
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Routine Description:
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Get the ip address as a 32 bit number
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Arguments:
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BOOL fNetworkByteOrder : If TRUE, convert to network byte order
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Return Value:
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32 bit ip address
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--*/
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{
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return fNetworkByteOrder
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? ::htonl((u_long)m_dwIPAddress)
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: m_dwIPAddress;
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}
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//
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// IP Address helper functions
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//
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// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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DWORD
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PopulateComboWithKnownIpAddresses(
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IN LPCTSTR lpszServer,
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IN CComboBox & combo,
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IN CIPAddress & iaIpAddress,
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OUT CObListPlus & oblIpAddresses,
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OUT int & nIpAddressSel
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)
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/*++
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Routine Description:
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Fill a combo box with known ip addresses
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Arguments:
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LPCTSTR lpszServer : Server whose ip addresses to obtain
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(can be computer name or ip address)
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CComboBox & combo : Combo box to populate
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CIPAddress & iaIpAddress : IP Address to select
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CObListPlus & oblIpAddresses : Returns an oblist of CIPAddress objects
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int & nIpAddressSel : Returns selected IP address
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Return Value:
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Error return code
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--*/
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{
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//
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// Start clean
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//
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oblIpAddresses.RemoveAll();
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combo.ResetContent();
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//
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// Don't like \\names
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//
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lpszServer = PURE_COMPUTER_NAME(lpszServer);
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struct hostent * pHostEntry = NULL;
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if (_istdigit(*lpszServer))
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{
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//
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// Get by ip address
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//
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u_long ul = (DWORD)CIPAddress(lpszServer);
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ul = ::htonl(ul); // convert to network order.
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pHostEntry = ::gethostbyaddr((CHAR *)&ul, sizeof(ul), PF_INET);
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}
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else
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{
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//
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// Get by domain name
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//
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const char FAR * lpszAnsiServer = NULL;
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#ifdef UNICODE
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CHAR szAnsi[255];
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if (::WideCharToMultiByte(CP_ACP, 0L, lpszServer, -1, szAnsi,
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sizeof(szAnsi), NULL, NULL) > 0)
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{
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lpszAnsiServer = szAnsi;
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}
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#else
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lpszAnsiServer = lpszServer;
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#endif // UNICODE
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if (lpszAnsiServer)
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{
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pHostEntry = ::gethostbyname(lpszAnsiServer);
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}
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}
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//
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// We'll always have the 'default' server id
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// selected
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//
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CString strDefault, str;
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VERIFY(strDefault.LoadString(IDS_DEFAULT));
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nIpAddressSel = -1;
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CIPAddress * pia = new CIPAddress;
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if (pia == NULL) {
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return ERROR_NOT_ENOUGH_MEMORY;
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}
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oblIpAddresses.AddTail(pia);
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int nNewSel = combo.AddString(strDefault);
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|
|
if (iaIpAddress == *pia)
|
|
{
|
|
//
|
|
// Remember selection
|
|
//
|
|
nIpAddressSel = nNewSel;
|
|
}
|
|
|
|
if (pHostEntry != NULL)
|
|
{
|
|
int n = 0;
|
|
while (((DWORD *)pHostEntry->h_addr_list[n]) != NULL)
|
|
{
|
|
//
|
|
// Convert from network byte order
|
|
//
|
|
pia = new CIPAddress(
|
|
*((DWORD *)(pHostEntry->h_addr_list[n++])), TRUE);
|
|
nNewSel = combo.AddString(pia->QueryIPAddress(str));
|
|
oblIpAddresses.AddTail(pia);
|
|
|
|
if (iaIpAddress == *pia)
|
|
{
|
|
//
|
|
// This is our current ip address, save index
|
|
// for selection
|
|
//
|
|
nIpAddressSel = nNewSel;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nIpAddressSel < 0)
|
|
{
|
|
//
|
|
// Ok, the IP address selected is not part of the
|
|
// list. Add it to the list, and select it.
|
|
//
|
|
pia = new CIPAddress(iaIpAddress);
|
|
nIpAddressSel = combo.AddString(pia->QueryIPAddress(str));
|
|
oblIpAddresses.AddTail(pia);
|
|
}
|
|
|
|
combo.SetCurSel(nIpAddressSel);
|
|
|
|
return ERROR_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
BOOL
|
|
FetchIpAddressFromCombo(
|
|
IN CComboBox & combo,
|
|
IN CObListPlus & oblIpAddresses,
|
|
OUT CIPAddress & ia
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Helper function to fetch an ip address from the combo box.
|
|
The combo box may not have a selection, in which case whatever
|
|
is in the edit box is used
|
|
|
|
Arguments:
|
|
|
|
CComboBox & combo : Combo box
|
|
CObListPlus & oblIpAddresses : Oblist of ip addresses
|
|
CIPAddress & ia : Returns the ip address
|
|
|
|
Return Value:
|
|
|
|
TRUE if a valid IP address is found, FALSE otherwise.
|
|
|
|
--*/
|
|
{
|
|
int nSel = combo.GetCurSel();
|
|
|
|
if (nSel >= 0)
|
|
{
|
|
//
|
|
// Fetch selected item
|
|
//
|
|
CIPAddress * pia = (CIPAddress *)oblIpAddresses.Index(nSel);
|
|
ASSERT(pia != NULL);
|
|
if (pia != NULL)
|
|
ia = *pia;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
//
|
|
// Try to make an ip address out of what's in the editbox
|
|
//
|
|
CString str;
|
|
combo.GetWindowText(str);
|
|
if (!str.IsEmpty())
|
|
{
|
|
ia = str;
|
|
if (!ia.IsZeroValue() && !ia.IsBadValue())
|
|
{
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
//
|
|
// No good
|
|
//
|
|
::AfxMessageBox(IDS_IP_INVALID);
|
|
|
|
return FALSE;
|
|
}
|