2 * PURPOSE: Load a DLL and run an entry point with the specified parameters
4 * Copyright 2002 Alberto Massari
5 * Copyright 2001-2003 Aric Stewart for CodeWeavers
6 * Copyright 2003 Mike McCormack for CodeWeavers
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
26 * rundll32 dllname,entrypoint [arguments]
28 * Documentation for this utility found on KB Q164787
36 /* Exclude rarely-used stuff from Windows headers */
37 #define WIN32_LEAN_AND_MEAN
39 #include "wine/winbase16.h"
40 #include "wine/unicode.h"
41 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(rundll32);
47 * Control_RunDLL has these parameters
49 typedef void (WINAPI *EntryPointW)(HWND hWnd, HINSTANCE hInst, LPWSTR lpszCmdLine, int nCmdShow);
50 typedef void (WINAPI *EntryPointA)(HWND hWnd, HINSTANCE hInst, LPSTR lpszCmdLine, int nCmdShow);
53 * Control_RunDLL needs to have a window. So lets make us a very
54 * simple window class.
56 static const TCHAR *szTitle = "rundll32";
57 static const TCHAR *szWindowClass = "class_rundll32";
59 static HINSTANCE16 (WINAPI *pLoadLibrary16)(LPCSTR libname);
60 static FARPROC16 (WINAPI *pGetProcAddress16)(HMODULE16 hModule, LPCSTR name);
61 static void (WINAPI *pRunDLL_CallEntry16)( FARPROC proc, HWND hwnd, HINSTANCE inst,
62 LPCSTR cmdline, INT cmdshow );
64 static ATOM register_class(void)
68 wcex.cbSize = sizeof(WNDCLASSEX);
70 wcex.style = CS_HREDRAW | CS_VREDRAW;
71 wcex.lpfnWndProc = DefWindowProc;
74 wcex.hInstance = NULL;
76 wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
77 wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
78 wcex.lpszMenuName = NULL;
79 wcex.lpszClassName = szWindowClass;
82 return RegisterClassEx(&wcex);
85 static HINSTANCE16 load_dll16( LPCWSTR dll )
88 DWORD len = WideCharToMultiByte( CP_ACP, 0, dll, -1, NULL, 0, NULL, NULL );
89 char *dllA = HeapAlloc( GetProcessHeap(), 0, len );
93 WideCharToMultiByte( CP_ACP, 0, dll, -1, dllA, len, NULL, NULL );
94 pLoadLibrary16 = (void *)GetProcAddress( GetModuleHandleA("kernel32.dll"), (LPCSTR)35 );
95 if (pLoadLibrary16) ret = pLoadLibrary16( dllA );
96 HeapFree( GetProcessHeap(), 0, dllA );
101 static FARPROC16 get_entry_point16( HINSTANCE16 inst, LPCWSTR entry )
104 DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
105 char *entryA = HeapAlloc( GetProcessHeap(), 0, len );
109 WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
110 pGetProcAddress16 = (void *)GetProcAddress( GetModuleHandleA("kernel32.dll"), (LPCSTR)37 );
111 if (pGetProcAddress16) ret = pGetProcAddress16( inst, entryA );
112 HeapFree( GetProcessHeap(), 0, entryA );
117 static void *get_entry_point32( HMODULE module, LPCWSTR entry, BOOL *unicode )
120 DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
121 char *entryA = HeapAlloc( GetProcessHeap(), 0, len + 1 );
126 WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
128 /* first try the W version */
130 strcat( entryA, "W" );
131 if (!(ret = GetProcAddress( module, entryA )))
133 /* now the A version */
135 entryA[strlen(entryA)-1] = 'A';
136 if (!(ret = GetProcAddress( module, entryA )))
138 /* now the version without suffix */
139 entryA[strlen(entryA)-1] = 0;
140 ret = GetProcAddress( module, entryA );
143 HeapFree( GetProcessHeap(), 0, entryA );
147 static LPWSTR get_next_arg(LPWSTR *cmdline)
151 int in_quotes,bcount,len=0;
153 /* count the chars */
158 if (*s==0 || ((*s=='\t' || *s==' ') && !in_quotes)) {
159 /* end of this command line argument */
161 } else if (*s=='\\') {
162 /* '\', count them */
164 } else if ((*s=='"') && ((bcount & 1)==0)) {
166 in_quotes=!in_quotes;
169 /* a regular character */
175 arg=HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
184 if ((*s=='\t' || *s==' ') && !in_quotes) {
185 /* end of this command line argument */
187 } else if (*s=='\\') {
191 } else if (*s=='"') {
193 if ((bcount & 1)==0) {
194 /* Preceded by an even number of '\', this is half that
195 * number of '\', plus a quote which we erase.
198 in_quotes=!in_quotes;
201 /* Preceded by an odd number of '\', this is half that
202 * number of '\' followed by a '"'
210 /* a regular character */
218 /* skip the remaining spaces */
219 while (**cmdline=='\t' || **cmdline==' ') {
226 int WINAPI WinMain(HINSTANCE instance, HINSTANCE hOldInstance, LPSTR szCmdArgs, int nCmdShow)
230 LPWSTR szDllName,szEntryPoint;
232 BOOL unicode = FALSE, win16;
240 /* Initialize the rundll32 class */
242 hWnd = CreateWindow(szWindowClass, szTitle,
243 WS_OVERLAPPEDWINDOW|WS_VISIBLE,
244 CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, NULL, NULL);
246 /* Skip the rundll32.exe path */
247 szCmdLine=GetCommandLineW();
248 WINE_TRACE("CmdLine=%s\n",wine_dbgstr_w(szCmdLine));
249 szDllName = get_next_arg(&szCmdLine);
250 if (!szDllName || *szDllName==0)
252 HeapFree(GetProcessHeap(),0,szDllName);
254 /* Get the dll name and API EntryPoint */
255 szDllName = get_next_arg(&szCmdLine);
256 if (!szDllName || *szDllName==0)
258 WINE_TRACE("DllName=%s\n",wine_dbgstr_w(szDllName));
259 if ((szEntryPoint = strchrW(szDllName, ',' )))
262 szEntryPoint = get_next_arg(&szCmdLine);
263 WINE_TRACE("EntryPoint=%s\n",wine_dbgstr_w(szEntryPoint));
265 /* Load the library */
266 hDll=LoadLibraryW(szDllName);
270 entry_point = get_entry_point32( hDll, szEntryPoint, &unicode );
274 HINSTANCE16 dll = load_dll16( szDllName );
277 /* Windows has a MessageBox here... */
278 WINE_ERR("Unable to load %s\n",wine_dbgstr_w(szDllName));
283 entry_point = get_entry_point16( dll, szEntryPoint );
288 /* Windows has a MessageBox here... */
289 WINE_ERR( "Unable to find the entry point %s in %s\n",
290 wine_dbgstr_w(szEntryPoint), wine_dbgstr_w(szDllName) );
294 GetStartupInfoW( &info );
295 if (!(info.dwFlags & STARTF_USESHOWWINDOW)) info.wShowWindow = SW_SHOWDEFAULT;
299 EntryPointW pEntryPointW = entry_point;
301 WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
302 hWnd, instance, wine_dbgstr_w(szCmdLine), info.wShowWindow );
304 pEntryPointW( hWnd, instance, szCmdLine, info.wShowWindow );
308 DWORD len = WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, NULL, 0, NULL, NULL );
309 char *cmdline = HeapAlloc( GetProcessHeap(), 0, len );
314 WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, cmdline, len, NULL, NULL );
316 WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
317 hWnd, instance, wine_dbgstr_a(cmdline), info.wShowWindow );
321 HMODULE shell = LoadLibraryA( "shell32.dll" );
322 if (shell) pRunDLL_CallEntry16 = (void *)GetProcAddress( shell, (LPCSTR)122 );
323 if (pRunDLL_CallEntry16)
324 pRunDLL_CallEntry16( entry_point, hWnd, instance, cmdline, info.wShowWindow );
328 EntryPointA pEntryPointA = entry_point;
329 pEntryPointA( hWnd, instance, cmdline, info.wShowWindow );
331 HeapFree( GetProcessHeap(), 0, cmdline );
339 HeapFree(GetProcessHeap(),0,szDllName);
340 return 0; /* rundll32 always returns 0! */