pingfunc.c

Ping test program based on windows ce

#include "windows.h"
#include "Icmpapi.h"
#include "winsock.h"

// return : -1 error in address , 0 - ping FALSE ; 1 - ping TRUE 
int Ping( TCHAR *Address , int iTtl , int iWaitTime , TCHAR *szName , int *prtt )
{
	IPAddr                ipAddress ;
	IP_OPTION_INFORMATION ipInfo ;
	ICMP_ECHO_REPLY       icmpEcho;	
	HANDLE                hFile;	
	char                  strHost  [ MAX_PATH ] ;
	TCHAR                 szPCName [ MAX_PATH ]  = { TEXT( "" ) } ;
	int                   iRet = -1 ;
	struct in_addr iaDest;		// Internet address structure
    LPHOSTENT pHost;			// Pointer to host entry structure

	_tcscpy( szName , TEXT("") );
	WideCharToMultiByte( CP_ACP, 0, Address , -1, strHost, sizeof( strHost ), NULL, FALSE );
    ipAddress = inet_addr(strHost);
    iaDest.s_addr = inet_addr(strHost);
    if (iaDest.s_addr == INADDR_NONE)
	{
        pHost = gethostbyname(strHost);
	    if( pHost )
		{
			char *pIP ;
			iaDest.S_un.S_addr = *(DWORD *)(*pHost->h_addr_list) ;
			pIP = inet_ntoa( iaDest ) ;
		    if( strlen( pIP ) )
	           MultiByteToWideChar( CP_ACP, 0, pIP , -1, szPCName, sizeof( szPCName ) );
		    if( _tcslen( szPCName ) )
		        _tcscpy( szName , szPCName );
		}
	}
    else
	{
        pHost = gethostbyaddr((const char *)&iaDest, 
                        sizeof(struct in_addr), AF_INET);
	    if( pHost )
		{
	        MultiByteToWideChar( CP_ACP, 0, pHost->h_name , -1, szPCName, sizeof( szPCName ) );
		    if( _tcslen( szPCName ) )
		        _tcscpy( szName , szPCName );
		}
	}
	if( pHost )
		ipAddress = *(DWORD *)(*pHost->h_addr_list) ;
    if (ipAddress != INADDR_NONE)
	{	
		iRet = 0 ;
		hFile = IcmpCreateFile();

		// Set some reasonable default values
		ipInfo.Ttl   = iTtl ;
		ipInfo.Tos   = 0;
		ipInfo.Flags = 0;
		ipInfo.OptionsSize = 0 ;
		ipInfo.OptionsData = NULL ;
		icmpEcho.Status    = IP_SUCCESS ;
		IcmpSendEcho( hFile , ipAddress , NULL , 0 ,
			          (PIP_OPTION_INFORMATION)&ipInfo,
			          &icmpEcho , sizeof(ICMP_ECHO_REPLY) , iWaitTime ) ;	
		IcmpCloseHandle(hFile) ;
		if ( icmpEcho.Status == IP_SUCCESS )
            iRet = 1 ;
		*prtt = icmpEcho.RoundTripTime ;
	}
	return iRet ;
}