Source code of Windows XP (NT5)
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398 lines
10 KiB

#include <stdio.h>
#include <windows.h>
#include <tchar.h>
#include <oleauto.h>
int __cdecl main(int ,char *argv[]);
void ShowHelp(void);
int DoesFileExist(char *input_filespec);
int ProcessFile(char szTheFileName[]);
DWORD CallProcedureInDll(LPCTSTR lpszDLLFile, LPCTSTR lpszProcedureToCall, BOOL bInitOleFlag);
int g_Param_A = FALSE;
int g_Param_B = FALSE;
//-------------------------------------------------------------------
// purpose: main
//-------------------------------------------------------------------
int __cdecl main(int argc,char *argv[])
{
int argno;
int nflags=0;
char szTempFileName1[_MAX_PATH];
char szTempFileName2[_MAX_PATH];
int iLen = 0;
szTempFileName1[0] = '\0';
szTempFileName2[0] = '\0';
// process command line arguments
for(argno=1; argno<argc; argno++)
{
if ( argv[argno][0] == '-' || argv[argno][0] == '/' )
{
nflags++;
switch (argv[argno][1])
{
case 'a':
g_Param_A = TRUE;
break;
case 'b':
g_Param_B = TRUE;
break;
case '?':
goto exit_with_help;
break;
}
} // if switch character found
else
{
if ( *szTempFileName1 == '\0' )
{
strcpy(szTempFileName1, argv[argno]);
}
else
{
if ( *szTempFileName2 == '\0' )
{
strcpy(szTempFileName2, argv[argno]);
}
}
} // non-switch char found
} // for all arguments
// check if filename was specified
if ( *szTempFileName1 == '\0')
{
_tprintf("Too few arguments, argc=%d\n\n",argc);
goto exit_with_help;
}
// Check if the file exists!
if (FALSE == DoesFileExist(szTempFileName1))
{
_tprintf("File '%s', does not exist!\r\n", szTempFileName1);
goto exit_gracefully;
}
if (g_Param_A)
{
if ( *szTempFileName2 == '\0')
{
_tprintf("Calling DllRegisterServer() in %s\r\n",szTempFileName1);
CallProcedureInDll(szTempFileName1,_T("DllRegisterServer"),TRUE);
}
else
{
_tprintf("Calling %s() in %s\r\n", szTempFileName2,szTempFileName1);
CallProcedureInDll(szTempFileName1,szTempFileName2,TRUE);
}
}
else
{
// run the function to do everything
ProcessFile(szTempFileName1);
}
exit_gracefully:
_tprintf("Done.\n");
return TRUE;
exit_with_help:
ShowHelp();
return FALSE;
}
//-------------------------------------------------------------------
// purpose:
//-------------------------------------------------------------------
int ProcessFile(char szTheFileName[])
{
HINSTANCE hLibHandle;
if ( ( hLibHandle = LoadLibrary( szTheFileName ) ) != NULL )
{
_tprintf("LoadLibarary Successfull.\n");
{
FreeLibrary(hLibHandle);
return TRUE;
}
}
else
{
_tprintf("LoadLibarary Failed.\n");
return FALSE;
}
}
//-------------------------------------------------------------------
// purpose:
//-------------------------------------------------------------------
void ShowHelp()
{
_tprintf("\n");
_tprintf("LoadLib - does a loadlibrary call on the specified file.\n");
_tprintf("Usage: LoadLib <input file> \n");
return;
}
//-------------------------------------------------------------------
// purpose:
//-------------------------------------------------------------------
int DoesFileExist(char *input_filespec)
{
if (GetFileAttributes(input_filespec) == -1) {return(FALSE);}
return (TRUE);
}
BOOL IsFileExist(LPCTSTR szFile)
{
// Check if the file has expandable Environment strings
LPTSTR pch = NULL;
pch = _tcschr( (LPTSTR) szFile, _T('%'));
if (pch)
{
TCHAR szValue[_MAX_PATH];
_tcscpy(szValue,szFile);
if (!ExpandEnvironmentStrings( (LPCTSTR)szFile, szValue, sizeof(szValue)/sizeof(TCHAR)))
{_tcscpy(szValue,szFile);}
return (GetFileAttributes(szValue) != 0xFFFFFFFF);
}
else
{
return (GetFileAttributes(szFile) != 0xFFFFFFFF);
}
}
int iOleInitialize(void)
{
int iBalanceOLE = FALSE;
HRESULT hInitRes = NULL;
hInitRes = OleInitialize(NULL);
if ( SUCCEEDED(hInitRes) || hInitRes == RPC_E_CHANGED_MODE )
{
if ( SUCCEEDED(hInitRes))
{
iBalanceOLE = TRUE;
}
else
{
_tprintf("iOleInitialize failed 1\n");
}
}
else
{
_tprintf("iOleInitialize failed 2\n");
}
return iBalanceOLE;
}
void iOleUnInitialize(int iBalanceOLE)
{
if (iBalanceOLE)
{
OleUninitialize();
}
return;
}
void InetGetFilePath(LPCTSTR szFile, LPTSTR szPath)
{
// if UNC name \\computer\share\local1\local2
if (*szFile == _T('\\') && *(_tcsinc(szFile)) == _T('\\')) {
TCHAR szTemp[_MAX_PATH], szLocal[_MAX_PATH];
TCHAR *p = NULL;
int i = 0;
_tcscpy(szTemp, szFile);
p = szTemp;
while (*p) {
if (*p == _T('\\'))
i++;
if (i == 4) {
*p = _T('\0');
p = _tcsinc(p); // p is now pointing at local1\local2
break;
}
p = _tcsinc(p);
}
_tcscpy(szPath, szTemp); // now szPath contains \\computer\share
if (i == 4 && *p) { // p is pointing the local path now
_tcscpy(szLocal, p);
p = _tcsrchr(szLocal, _T('\\'));
if (p)
*p = _T('\0');
_tcscat(szPath, _T("\\"));
_tcscat(szPath, szLocal); // szPath contains \\computer\share\local1
}
} else { // NOT UNC name
TCHAR *p;
if (GetFullPathName(szFile, _MAX_PATH, szPath, &p)) {
p = _tcsrchr(szPath, _T('\\'));
if (p)
{
TCHAR *p2 = NULL;
p2 = _tcsdec(szPath, p);
if (p2)
{
if (*p2 == _T(':') )
{p = _tcsinc(p);}
}
*p = _T('\0');
}
} else {
_tprintf("InetGetFilePath failed\n");
}
}
return;
}
typedef HRESULT (CALLBACK *HCRET)(void);
DWORD CallProcedureInDll(LPCTSTR lpszDLLFile, LPCTSTR lpszProcedureToCall, BOOL bInitOleFlag)
{
TCHAR szErrorString[100];
DWORD dwReturn = ERROR_SUCCESS;
HINSTANCE hDll = NULL;
// Diferent function prototypes...
HCRET hProc = NULL;
int iTempProcGood = FALSE;
HRESULT hRes = 0;
BOOL bBalanceOLE = FALSE;
HRESULT hInitRes = NULL;
int err = NOERROR;
// Variables to changing and saving dirs
TCHAR szDirName[_MAX_PATH], szFilePath[_MAX_PATH];
// Variable to set error string
TCHAR szErrString[256];
_tcscpy(szDirName, _T(""));
_tcscpy(szErrString, _T(""));
_tprintf("CallProcedureInDll start\n");
// If we need to initialize the ole library then init it.
if (bInitOleFlag)
{
bBalanceOLE = iOleInitialize();
if (FALSE == bBalanceOLE)
{
hInitRes = OleInitialize(NULL);
// Ole Failed.
dwReturn = hInitRes;
SetLastError(dwReturn);
_tprintf("CallProcedureInDll failed 1\n");
goto CallProcedureInDll_Exit;
}
}
// Check if the file exists
if (!IsFileExist(lpszDLLFile))
{
dwReturn = ERROR_FILE_NOT_FOUND;
_tprintf("CallProcedureInDll failed 2\n");
SetLastError(dwReturn);
goto CallProcedureInDll_Exit;
}
// Change Directory
GetCurrentDirectory( _MAX_PATH, szDirName );
InetGetFilePath(lpszDLLFile, szFilePath);
// Change to The Drive.
if (SetCurrentDirectory(szFilePath) == 0) {}
// Try to load the module,dll,ocx.
hDll = LoadLibraryEx(lpszDLLFile, NULL, LOAD_WITH_ALTERED_SEARCH_PATH );
if (!hDll)
{
// Failed to load library, Probably because some .dll file is missing.
// Show the error message.
dwReturn = TYPE_E_CANTLOADLIBRARY;
_tprintf("CallProcedureInDll failed 3\n");
SetLastError(dwReturn);
goto CallProcedureInDll_Exit;
}
// Ok module was successfully loaded. now let's try to get the Address of the Procedure
// Convert the function name to ascii before passing it to GetProcAddress()
char AsciiProcedureName[255];
#if defined(UNICODE) || defined(_UNICODE)
// convert to ascii
WideCharToMultiByte( CP_ACP, 0, (TCHAR *)lpszProcedureToCall, -1, AsciiProcedureName, 255, NULL, NULL );
#else
// the is already ascii so just copy
strcpy(AsciiProcedureName, lpszProcedureToCall);
#endif
iTempProcGood = TRUE;
hProc = (HCRET)GetProcAddress(hDll, AsciiProcedureName);
if (!hProc){iTempProcGood = FALSE;}
if (!iTempProcGood)
{
// failed to load,find or whatever this function.
dwReturn = ERROR_PROC_NOT_FOUND;
_tprintf("CallProcedureInDll failed 4\n");
SetLastError(dwReturn);
goto CallProcedureInDll_Exit;
}
// Call the function that we got the handle to
__try
{
hRes = (*hProc)();
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
_tprintf(szErrorString, _T("\r\n\r\nException Caught in CallProcedureInDll(). GetExceptionCode()=0x%x.\r\n\r\n"), GetExceptionCode());
_tprintf(szErrorString);
}
if (FAILED(hRes))
{
dwReturn = E_FAIL;
_tprintf("CallProcedureInDll failed 5\n");
// this function returns E_FAIL but
// the actual error is in GetLastError()
// set the last error to whatever was returned from the function call
SetLastError(hRes);
}
else
{
}
CallProcedureInDll_Exit:
if (hDll)
{
FreeLibrary(hDll);
}
else
{
}
if (_tcscmp(szDirName, _T("")) != 0){SetCurrentDirectory(szDirName);}
// To close the library gracefully, each successful call to OleInitialize,
// including those that return S_FALSE, must be balanced by a corresponding
// call to the OleUninitialize function.
iOleUnInitialize(bBalanceOLE);
return dwReturn;
}