mirror of
https://github.com/reactos/reactos.git
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9ea495ba33
svn path=/branches/header-work/; revision=45691
482 lines
15 KiB
C
482 lines
15 KiB
C
/*
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* ReactOS rundll32
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* Copyright (C) 2003-2004 ReactOS Team
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS rundll32.exe
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* FILE: apps/utils/rundll32/rundll32.c
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* PURPOSE: Run a DLL as a program
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* PROGRAMMER: ShadowFlare (blakflare@hotmail.com)
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*/
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#define WIN32_LEAN_AND_MEAN
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// Both UNICODE and _UNICODE must be either defined or undefined
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// because some headers use UNICODE and others use _UNICODE
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#ifdef UNICODE
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#ifndef _UNICODE
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#define _UNICODE
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#endif
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#else
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#ifdef _UNICODE
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#define UNICODE
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#endif
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#endif
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#include <windows.h>
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#include <stdio.h>
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#include <string.h>
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#include <malloc.h>
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#include <tchar.h>
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#include "resource.h"
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typedef int (WINAPI *DllWinMainW)(
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HWND hWnd,
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HINSTANCE hInstance,
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LPWSTR lpwCmdLine,
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int nCmdShow
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);
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typedef int (WINAPI *DllWinMainA)(
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HWND hWnd,
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HINSTANCE hInstance,
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LPSTR lpCmdLine,
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int nCmdShow
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);
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/*
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LPCTSTR DllNotLoaded = _T("LoadLibrary failed to load \"%s\"");
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LPCTSTR MissingEntry = _T("Missing entry point:%s\nIn %s");
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*/
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LPCTSTR rundll32_wtitle = _T("rundll32");
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LPCTSTR rundll32_wclass = _T("rundll32_window");
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TCHAR ModuleFileName[MAX_PATH+1];
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LPTSTR ModuleTitle;
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// CommandLineToArgv converts a command-line string to argc and
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// argv similar to the ones in the standard main function.
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// This is a specialized version coded specifically for rundll32
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// and is not intended to be used in any other program.
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LPTSTR *WINAPI CommandLineToArgv(LPCTSTR lpCmdLine, int *lpArgc)
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{
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LPTSTR *argv, lpSrc, lpDest, lpArg;
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int argc, nBSlash, nNames;
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BOOL bInQuotes, bFirstChar;
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// If null was passed in for lpCmdLine, there are no arguments
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if (!lpCmdLine) {
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if (lpArgc)
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*lpArgc = 0;
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return 0;
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}
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lpSrc = (LPTSTR)lpCmdLine;
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// Skip spaces at beginning
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while (*lpSrc == _T(' ') || *lpSrc == _T('\t'))
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lpSrc++;
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// If command-line starts with null, there are no arguments
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if (*lpSrc == 0) {
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if (lpArgc)
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*lpArgc = 0;
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return 0;
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}
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lpArg = lpSrc;
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argc = 0;
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nBSlash = 0;
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bInQuotes = FALSE;
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bFirstChar = TRUE;
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nNames = 0;
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// Count the number of arguments
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while (nNames < 4) {
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if (*lpSrc == 0 || (*lpSrc == _T(',') && nNames == 2) || ((*lpSrc == _T(' ') || *lpSrc == _T('\t')) && !bInQuotes)) {
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// Whitespace not enclosed in quotes signals the start of another argument
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argc++;
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// Skip whitespace between arguments
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while (*lpSrc == _T(' ') || *lpSrc == _T('\t') || (*lpSrc == _T(',') && nNames == 2))
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lpSrc++;
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if (*lpSrc == 0)
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break;
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if (nNames >= 3) {
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// Increment the count for the last argument
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argc++;
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break;
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}
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nBSlash = 0;
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bFirstChar = TRUE;
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continue;
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}
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else if (*lpSrc == _T('\\')) {
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// Count consecutive backslashes
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nBSlash++;
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bFirstChar = FALSE;
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}
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else if (*lpSrc == _T('\"') && !(nBSlash & 1)) {
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// Open or close quotes
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bInQuotes = !bInQuotes;
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nBSlash = 0;
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}
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else {
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// Some other character
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nBSlash = 0;
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if (bFirstChar && ((*lpSrc != _T('/') && nNames <= 1) || nNames > 1))
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nNames++;
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bFirstChar = FALSE;
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}
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lpSrc++;
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}
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// Allocate space for the pointers in argv and the strings in one block
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argv = (LPTSTR *)malloc(argc * sizeof(LPTSTR) + (_tcslen(lpArg) + 1) * sizeof(TCHAR));
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if (!argv) {
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// Memory allocation failed
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if (lpArgc)
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*lpArgc = 0;
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return 0;
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}
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lpSrc = lpArg;
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lpDest = lpArg = (LPTSTR)(argv + argc);
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argc = 0;
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nBSlash = 0;
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bInQuotes = FALSE;
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bFirstChar = TRUE;
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nNames = 0;
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// Fill the argument array
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while (nNames < 4) {
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if (*lpSrc == 0 || (*lpSrc == _T(',') && nNames == 2) || ((*lpSrc == _T(' ') || *lpSrc == _T('\t')) && !bInQuotes)) {
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// Whitespace not enclosed in quotes signals the start of another argument
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// Null-terminate argument
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*lpDest++ = 0;
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argv[argc++] = lpArg;
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// Skip whitespace between arguments
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while (*lpSrc == _T(' ') || *lpSrc == _T('\t') || (*lpSrc == _T(',') && nNames == 2))
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lpSrc++;
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if (*lpSrc == 0)
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break;
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lpArg = lpDest;
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if (nNames >= 3) {
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// Copy the rest of the command-line to the last argument
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argv[argc++] = lpArg;
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_tcscpy(lpArg,lpSrc);
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break;
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}
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nBSlash = 0;
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bFirstChar = TRUE;
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continue;
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}
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else if (*lpSrc == _T('\\')) {
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*lpDest++ = _T('\\');
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lpSrc++;
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// Count consecutive backslashes
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nBSlash++;
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bFirstChar = FALSE;
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}
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else if (*lpSrc == _T('\"')) {
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if (!(nBSlash & 1)) {
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// If an even number of backslashes are before the quotes,
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// the quotes don't go in the output
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lpDest -= nBSlash / 2;
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bInQuotes = !bInQuotes;
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}
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else {
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// If an odd number of backslashes are before the quotes,
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// output a quote
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lpDest -= (nBSlash + 1) / 2;
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*lpDest++ = _T('\"');
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bFirstChar = FALSE;
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}
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lpSrc++;
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nBSlash = 0;
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}
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else {
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// Copy other characters
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if (bFirstChar && ((*lpSrc != _T('/') && nNames <= 1) || nNames > 1))
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nNames++;
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*lpDest++ = *lpSrc++;
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nBSlash = 0;
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bFirstChar = FALSE;
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}
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}
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if (lpArgc)
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*lpArgc = argc;
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return argv;
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}
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void GetModuleTitle(void)
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{
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LPTSTR lpStr;
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GetModuleFileName(0,ModuleFileName,MAX_PATH);
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ModuleTitle = ModuleFileName;
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for (lpStr = ModuleFileName;*lpStr;lpStr++) {
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if (*lpStr == _T('\\'))
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ModuleTitle = lpStr+1;
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}
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for (lpStr = ModuleTitle;*lpStr;lpStr++) {
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if (_tcsicmp(lpStr,_T(".exe"))==0)
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break;
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}
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*lpStr = 0;
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}
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// The macro ConvertToWideChar takes a tstring parameter and returns
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// a pointer to a unicode string. A conversion is performed if
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// neccessary. FreeConvertedWideChar string should be used on the
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// return value of ConvertToWideChar when the string is no longer
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// needed. The original string or the string that is returned
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// should not be modified until FreeConvertedWideChar has been called.
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#ifdef UNICODE
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#define ConvertToWideChar(lptString) (lptString)
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#define FreeConvertedWideChar(lpwString)
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#else
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LPWSTR ConvertToWideChar(LPCSTR lpString)
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{
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LPWSTR lpwString;
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size_t nStrLen;
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nStrLen = strlen(lpString) + 1;
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lpwString = (LPWSTR)malloc(nStrLen * sizeof(WCHAR));
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MultiByteToWideChar(0,0,lpString,nStrLen,lpwString,nStrLen);
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return lpwString;
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}
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#define FreeConvertedWideChar(lpwString) free(lpwString)
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#endif
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// The macro ConvertToMultiByte takes a tstring parameter and returns
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// a pointer to an ansi string. A conversion is performed if
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// neccessary. FreeConvertedMultiByte string should be used on the
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// return value of ConvertToMultiByte when the string is no longer
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// needed. The original string or the string that is returned
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// should not be modified until FreeConvertedMultiByte has been called.
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#ifdef UNICODE
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#define ConvertToMultiByte(lptString) DuplicateToMultiByte(lptString,0)
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#define FreeConvertedMultiByte(lpaString) free(lpaString)
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#else
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#define ConvertToMultiByte(lptString) (lptString)
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#define FreeConvertedMultiByte(lpaString)
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#endif
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// DuplicateToMultiByte takes a tstring parameter and always returns
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// a pointer to a duplicate ansi string. If nBufferSize is zero,
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// the buffer length is the exact size of the string plus the
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// terminating null. If nBufferSize is nonzero, the buffer length
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// is equal to nBufferSize. As with strdup, free should be called
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// for the returned string when it is no longer needed.
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LPSTR DuplicateToMultiByte(LPCTSTR lptString, size_t nBufferSize)
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{
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LPSTR lpString;
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size_t nStrLen;
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nStrLen = _tcslen(lptString) + 1;
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if (nBufferSize == 0) nBufferSize = nStrLen;
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lpString = (LPSTR)malloc(nBufferSize);
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#ifdef UNICODE
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WideCharToMultiByte(0,0,lptString,nStrLen,lpString,nBufferSize,0,0);
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#else
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strncpy(lpString,lptString,nBufferSize);
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#endif
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return lpString;
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}
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LRESULT CALLBACK EmptyWindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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return DefWindowProc(hWnd, uMsg, wParam, lParam);
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}
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// Registers a minimal window class for passing to the dll function
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BOOL RegisterBlankClass(HINSTANCE hInstance, HINSTANCE hPrevInstance)
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{
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WNDCLASSEX wcex;
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wcex.cbSize = sizeof(WNDCLASSEX);
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wcex.style = 0;
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wcex.lpfnWndProc = EmptyWindowProc;
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wcex.cbClsExtra = 0;
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wcex.cbWndExtra = 0;
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wcex.hInstance = hInstance;
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wcex.hIcon = 0;
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wcex.hCursor = 0;
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wcex.hbrBackground = 0;
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wcex.lpszMenuName = 0;
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wcex.lpszClassName = rundll32_wclass;
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wcex.hIconSm = 0;
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return (RegisterClassEx(&wcex) != (ATOM)0);
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}
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int WINAPI _tWinMain(
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HINSTANCE hInstance,
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HINSTANCE hPrevInstance,
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LPTSTR lpCmdLine,
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int nCmdShow
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)
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{
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int argc;
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TCHAR szMsg[RC_STRING_MAX_SIZE];
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LPTSTR *argv;
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LPTSTR lptCmdLine,lptDllName,lptFuncName,lptMsgBuffer;
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LPSTR lpFuncName,lpaCmdLine;
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LPWSTR lpwCmdLine;
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HMODULE hDll;
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DllWinMainW fnDllWinMainW;
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DllWinMainA fnDllWinMainA;
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HWND hWindow;
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int nRetVal,i;
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size_t nStrLen;
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// Get command-line in argc-argv format
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argv = CommandLineToArgv(GetCommandLine(),&argc);
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// Skip all beginning arguments starting with a slash (/)
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for (i = 1; i < argc; i++)
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if (*argv[i] != _T('/')) break;
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// If no dll was specified, there is nothing to do
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if (i >= argc) {
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if (argv) free(argv);
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return 0;
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}
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lptDllName = argv[i++];
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// The next argument, which specifies the name of the dll function,
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// can either have a comma between it and the dll filename or a space.
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// Using a comma here is the preferred method
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if (i < argc)
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lptFuncName = argv[i++];
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else
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lptFuncName = _T("");
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// If no function name was specified, nothing needs to be done
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if (!*lptFuncName) {
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if (argv) free(argv);
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return 0;
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}
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// The rest of the arguments will be passed to dll function
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if (i < argc)
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lptCmdLine = argv[i];
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else
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lptCmdLine = _T("");
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nRetVal = 0;
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// Everything is all setup, so load the dll now
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hDll = LoadLibrary(lptDllName);
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if (hDll) {
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nStrLen = _tcslen(lptFuncName);
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// Make a non-unicode version of the function name,
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// since that is all GetProcAddress accepts
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lpFuncName = DuplicateToMultiByte(lptFuncName,nStrLen + 2);
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#ifdef UNICODE
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lpFuncName[nStrLen] = 'W';
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lpFuncName[nStrLen+1] = 0;
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// Get address of unicode version of the dll function if it exists
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fnDllWinMainW = (DllWinMainW)GetProcAddress(hDll,lpFuncName);
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fnDllWinMainA = 0;
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if (!fnDllWinMainW) {
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// If no unicode function was found, get the address of the non-unicode function
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lpFuncName[nStrLen] = 'A';
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fnDllWinMainA = (DllWinMainA)GetProcAddress(hDll,lpFuncName);
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if (!fnDllWinMainA) {
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// If first non-unicode function was not found, get the address
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// of the other non-unicode function
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lpFuncName[nStrLen] = 0;
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fnDllWinMainA = (DllWinMainA)GetProcAddress(hDll,lpFuncName);
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}
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}
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#else
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// Get address of non-unicode version of the dll function if it exists
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fnDllWinMainA = (DllWinMainA)GetProcAddress(hDll,lpFuncName);
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fnDllWinMainW = 0;
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if (!fnDllWinMainA) {
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// If first non-unicode function was not found, get the address
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// of the other non-unicode function
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lpFuncName[nStrLen] = 'A';
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lpFuncName[nStrLen+1] = 0;
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fnDllWinMainA = (DllWinMainA)GetProcAddress(hDll,lpFuncName);
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if (!fnDllWinMainA) {
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// If non-unicode function was not found, get the address of the unicode function
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lpFuncName[nStrLen] = 'W';
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fnDllWinMainW = (DllWinMainW)GetProcAddress(hDll,lpFuncName);
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}
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}
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#endif
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free(lpFuncName);
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if (!RegisterBlankClass(hInstance, hPrevInstance))
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{
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return 0;
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}
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// Create a window so we can pass a window handle to
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// the dll function; this is required
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hWindow = CreateWindowEx(0,rundll32_wclass,rundll32_wtitle,0,CW_USEDEFAULT,0,CW_USEDEFAULT,0,0,0,hInstance,0);
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if (fnDllWinMainW) {
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// Convert the command-line string to unicode and call the dll function
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lpwCmdLine = ConvertToWideChar(lptCmdLine);
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nRetVal = fnDllWinMainW(hWindow,hInstance,lpwCmdLine,nCmdShow);
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FreeConvertedWideChar(lpwCmdLine);
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}
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else if (fnDllWinMainA) {
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// Convert the command-line string to ansi and call the dll function
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lpaCmdLine = ConvertToMultiByte(lptCmdLine);
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nRetVal = fnDllWinMainA(hWindow,hInstance,lpaCmdLine,nCmdShow);
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FreeConvertedMultiByte(lpaCmdLine);
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}
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else {
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// The specified dll function was not found; display an error message
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GetModuleTitle();
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LoadString( GetModuleHandle(NULL), IDS_MissingEntry, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
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lptMsgBuffer = (LPTSTR)malloc((_tcslen(szMsg) - 4 + _tcslen(lptFuncName) + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
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_stprintf(lptMsgBuffer,szMsg,lptFuncName,lptDllName);
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MessageBox(0,lptMsgBuffer,ModuleTitle,MB_ICONERROR);
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free(lptMsgBuffer);
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}
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DestroyWindow(hWindow);
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UnregisterClass(rundll32_wclass,hInstance);
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// The dll function has finished executing, so unload it
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FreeLibrary(hDll);
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}
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else {
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// The dll could not be loaded; display an error message
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GetModuleTitle();
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LoadString( GetModuleHandle(NULL), IDS_DllNotLoaded, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
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lptMsgBuffer = (LPTSTR)malloc((_tcslen(szMsg) - 2 + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
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_stprintf(lptMsgBuffer,szMsg,lptDllName);
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MessageBox(0,lptMsgBuffer,ModuleTitle,MB_ICONERROR);
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free(lptMsgBuffer);
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}
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if (argv) free(argv);
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return nRetVal;
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}
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