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 WCHAR szTitle[] = {'r','u','n','d','l','l','3','2',0};
57 static const WCHAR szWindowClass[] = {'c','l','a','s','s','_','r','u','n','d','l','l','3','2',0};
58 static const WCHAR kernel32[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
59 static const WCHAR shell32[] = {'s','h','e','l','l','3','2','.','d','l','l',0};
61 static HINSTANCE16 (WINAPI *pLoadLibrary16)(LPCSTR libname);
62 static FARPROC16 (WINAPI *pGetProcAddress16)(HMODULE16 hModule, LPCSTR name);
63 static void (WINAPI *pRunDLL_CallEntry16)( FARPROC proc, HWND hwnd, HINSTANCE inst,
64 LPCSTR cmdline, INT cmdshow );
66 static ATOM register_class(void)
70 wcex.cbSize = sizeof(WNDCLASSEXW);
72 wcex.style = CS_HREDRAW | CS_VREDRAW;
73 wcex.lpfnWndProc = DefWindowProcW;
76 wcex.hInstance = NULL;
78 wcex.hCursor = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
79 wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
80 wcex.lpszMenuName = NULL;
81 wcex.lpszClassName = szWindowClass;
84 return RegisterClassExW(&wcex);
87 static HINSTANCE16 load_dll16( LPCWSTR dll )
90 DWORD len = WideCharToMultiByte( CP_ACP, 0, dll, -1, NULL, 0, NULL, NULL );
91 char *dllA = HeapAlloc( GetProcessHeap(), 0, len );
95 WideCharToMultiByte( CP_ACP, 0, dll, -1, dllA, len, NULL, NULL );
96 pLoadLibrary16 = (void *)GetProcAddress( GetModuleHandleW(kernel32), (LPCSTR)35 );
97 if (pLoadLibrary16) ret = pLoadLibrary16( dllA );
98 HeapFree( GetProcessHeap(), 0, dllA );
103 static FARPROC16 get_entry_point16( HINSTANCE16 inst, LPCWSTR entry )
106 DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
107 char *entryA = HeapAlloc( GetProcessHeap(), 0, len );
111 WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
112 pGetProcAddress16 = (void *)GetProcAddress( GetModuleHandleW(kernel32), (LPCSTR)37 );
113 if (pGetProcAddress16) ret = pGetProcAddress16( inst, entryA );
114 HeapFree( GetProcessHeap(), 0, entryA );
119 static void *get_entry_point32( HMODULE module, LPCWSTR entry, BOOL *unicode )
123 /* determine if the entry point is an ordinal */
126 INT_PTR ordinal = atoiW( entry + 1 );
131 ret = GetProcAddress( module, (LPCSTR)ordinal );
135 DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
136 char *entryA = HeapAlloc( GetProcessHeap(), 0, len + 1 );
141 WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
143 /* first try the W version */
145 strcat( entryA, "W" );
146 if (!(ret = GetProcAddress( module, entryA )))
148 /* now the A version */
150 entryA[strlen(entryA)-1] = 'A';
151 if (!(ret = GetProcAddress( module, entryA )))
153 /* now the version without suffix */
154 entryA[strlen(entryA)-1] = 0;
155 ret = GetProcAddress( module, entryA );
158 HeapFree( GetProcessHeap(), 0, entryA );
163 static LPWSTR get_next_arg(LPWSTR *cmdline)
167 int in_quotes,bcount,len=0;
169 /* count the chars */
174 if (*s==0 || ((*s=='\t' || *s==' ') && !in_quotes)) {
175 /* end of this command line argument */
177 } else if (*s=='\\') {
178 /* '\', count them */
180 } else if ((*s=='"') && ((bcount & 1)==0)) {
182 in_quotes=!in_quotes;
185 /* a regular character */
191 arg=HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
200 if ((*s=='\t' || *s==' ') && !in_quotes) {
201 /* end of this command line argument */
203 } else if (*s=='\\') {
207 } else if (*s=='"') {
209 if ((bcount & 1)==0) {
210 /* Preceded by an even number of '\', this is half that
211 * number of '\', plus a quote which we erase.
214 in_quotes=!in_quotes;
217 /* Preceded by an odd number of '\', this is half that
218 * number of '\' followed by a '"'
226 /* a regular character */
234 /* skip the remaining spaces */
235 while (**cmdline=='\t' || **cmdline==' ') {
242 int WINAPI wWinMain(HINSTANCE instance, HINSTANCE hOldInstance, LPWSTR szCmdLine, int nCmdShow)
245 LPWSTR szDllName,szEntryPoint;
247 BOOL unicode = FALSE, win16;
255 /* Initialize the rundll32 class */
257 hWnd = CreateWindowW(szWindowClass, szTitle,
258 WS_OVERLAPPEDWINDOW|WS_VISIBLE,
259 CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, NULL, NULL);
261 /* Get the dll name and API EntryPoint */
262 WINE_TRACE("CmdLine=%s\n",wine_dbgstr_w(szCmdLine));
263 szDllName = get_next_arg(&szCmdLine);
264 if (!szDllName || *szDllName==0)
266 WINE_TRACE("DllName=%s\n",wine_dbgstr_w(szDllName));
267 if ((szEntryPoint = strchrW(szDllName, ',' )))
270 szEntryPoint = get_next_arg(&szCmdLine);
271 WINE_TRACE("EntryPoint=%s\n",wine_dbgstr_w(szEntryPoint));
273 /* Load the library */
274 hDll=LoadLibraryW(szDllName);
278 entry_point = get_entry_point32( hDll, szEntryPoint, &unicode );
282 HINSTANCE16 dll = load_dll16( szDllName );
285 /* Windows has a MessageBox here... */
286 WINE_ERR("Unable to load %s\n",wine_dbgstr_w(szDllName));
291 entry_point = get_entry_point16( dll, szEntryPoint );
296 /* Windows has a MessageBox here... */
297 WINE_ERR( "Unable to find the entry point %s in %s\n",
298 wine_dbgstr_w(szEntryPoint), wine_dbgstr_w(szDllName) );
302 GetStartupInfoW( &info );
303 if (!(info.dwFlags & STARTF_USESHOWWINDOW)) info.wShowWindow = SW_SHOWDEFAULT;
307 EntryPointW pEntryPointW = entry_point;
309 WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
310 hWnd, instance, wine_dbgstr_w(szCmdLine), info.wShowWindow );
312 pEntryPointW( hWnd, instance, szCmdLine, info.wShowWindow );
316 DWORD len = WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, NULL, 0, NULL, NULL );
317 char *cmdline = HeapAlloc( GetProcessHeap(), 0, len );
322 WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, cmdline, len, NULL, NULL );
324 WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
325 hWnd, instance, wine_dbgstr_a(cmdline), info.wShowWindow );
329 HMODULE shell = LoadLibraryW( shell32 );
330 if (shell) pRunDLL_CallEntry16 = (void *)GetProcAddress( shell, (LPCSTR)122 );
331 if (pRunDLL_CallEntry16)
332 pRunDLL_CallEntry16( entry_point, hWnd, instance, cmdline, info.wShowWindow );
336 EntryPointA pEntryPointA = entry_point;
337 pEntryPointA( hWnd, instance, cmdline, info.wShowWindow );
339 HeapFree( GetProcessHeap(), 0, cmdline );
347 HeapFree(GetProcessHeap(),0,szDllName);
348 return 0; /* rundll32 always returns 0! */