Sweden-Number/programs/rundll32/rundll32.c

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/*
* PURPOSE: Load a DLL and run an entry point with the specified parameters
*
* Copyright 2002 Alberto Massari
* Copyright 2001-2003 Aric Stewart for CodeWeavers
* Copyright 2003 Mike McCormack for CodeWeavers
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*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
*/
/*
*
* rundll32 dllname,entrypoint [arguments]
*
* Documentation for this utility found on KB Q164787
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/* Exclude rarely-used stuff from Windows headers */
#define WIN32_LEAN_AND_MEAN
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#include "windows.h"
#include "wine/winbase16.h"
#include "wine/asm.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(rundll32);
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#ifdef __i386__
/* wrapper for dlls that declare the entry point incorrectly */
extern void call_entry_point( void *func, HWND hwnd, HINSTANCE inst, void *cmdline, int show );
__ASM_GLOBAL_FUNC( call_entry_point,
"pushl %ebp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
"movl %esp,%ebp\n\t"
__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
"pushl %edi\n\t"
__ASM_CFI(".cfi_rel_offset %edi,-4\n\t")
"pushl %esi\n\t"
__ASM_CFI(".cfi_rel_offset %esi,-8\n\t")
"pushl %ebx\n\t"
__ASM_CFI(".cfi_rel_offset %ebx,-12\n\t")
"subl $12,%esp\n\t"
"pushl 24(%ebp)\n\t"
"pushl 20(%ebp)\n\t"
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"call *8(%ebp)\n\t"
"leal -12(%ebp),%esp\n\t"
"popl %ebx\n\t"
__ASM_CFI(".cfi_same_value %ebx\n\t")
"popl %esi\n\t"
__ASM_CFI(".cfi_same_value %esi\n\t")
"popl %edi\n\t"
__ASM_CFI(".cfi_same_value %edi\n\t")
"leave\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret" )
#else
static void call_entry_point( void *func, HWND hwnd, HINSTANCE inst, void *cmdline, int show )
{
void (WINAPI *entry_point)( HWND hwnd, HINSTANCE inst, void *cmdline, int show ) = func;
entry_point( hwnd, inst, cmdline, show );
}
#endif
static HINSTANCE16 (WINAPI *pLoadLibrary16)(LPCSTR libname);
static FARPROC16 (WINAPI *pGetProcAddress16)(HMODULE16 hModule, LPCSTR name);
static void (WINAPI *pRunDLL_CallEntry16)( FARPROC proc, HWND hwnd, HINSTANCE inst,
LPCSTR cmdline, INT cmdshow );
/*
* Control_RunDLL needs to have a window. So lets make us a very simple window class.
*/
static ATOM register_class(void)
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{
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WNDCLASSEXW wcex;
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wcex.cbSize = sizeof(WNDCLASSEXW);
wcex.style = CS_HREDRAW | CS_VREDRAW;
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wcex.lpfnWndProc = DefWindowProcW;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = NULL;
wcex.hIcon = NULL;
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wcex.hCursor = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = L"class_rundll32";
wcex.hIconSm = NULL;
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return RegisterClassExW(&wcex);
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}
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static HINSTANCE16 load_dll16( LPCWSTR dll )
{
HINSTANCE16 ret = 0;
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DWORD len = WideCharToMultiByte( CP_ACP, 0, dll, -1, NULL, 0, NULL, NULL );
char *dllA = HeapAlloc( GetProcessHeap(), 0, len );
if (dllA)
{
WideCharToMultiByte( CP_ACP, 0, dll, -1, dllA, len, NULL, NULL );
pLoadLibrary16 = (void *)GetProcAddress( GetModuleHandleW(L"kernel32.dll"), (LPCSTR)35 );
if (pLoadLibrary16) ret = pLoadLibrary16( dllA );
HeapFree( GetProcessHeap(), 0, dllA );
}
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return ret;
}
static FARPROC16 get_entry_point16( HINSTANCE16 inst, LPCWSTR entry )
{
FARPROC16 ret = 0;
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DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
char *entryA = HeapAlloc( GetProcessHeap(), 0, len );
if (entryA)
{
WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
pGetProcAddress16 = (void *)GetProcAddress( GetModuleHandleW(L"kernel32.dll"), (LPCSTR)37 );
if (pGetProcAddress16) ret = pGetProcAddress16( inst, entryA );
HeapFree( GetProcessHeap(), 0, entryA );
}
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return ret;
}
static void *get_entry_point32( HMODULE module, LPCWSTR entry, BOOL *unicode )
{
void *ret;
/* determine if the entry point is an ordinal */
if (entry[0] == '#')
{
INT_PTR ordinal = wcstol( entry + 1, NULL, 10 );
if (ordinal <= 0)
return NULL;
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*unicode = TRUE;
ret = GetProcAddress( module, (LPCSTR)ordinal );
}
else
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{
DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
char *entryA = HeapAlloc( GetProcessHeap(), 0, len + 1 );
if (!entryA)
return NULL;
WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
/* first try the W version */
*unicode = TRUE;
strcat( entryA, "W" );
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if (!(ret = GetProcAddress( module, entryA )))
{
/* now the A version */
*unicode = FALSE;
entryA[strlen(entryA)-1] = 'A';
if (!(ret = GetProcAddress( module, entryA )))
{
/* now the version without suffix */
entryA[strlen(entryA)-1] = 0;
ret = GetProcAddress( module, entryA );
}
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}
HeapFree( GetProcessHeap(), 0, entryA );
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}
return ret;
}
static LPWSTR get_next_arg(LPWSTR *cmdline)
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{
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LPWSTR s;
LPWSTR arg,d;
BOOL in_quotes;
int bcount,len=0;
/* count the chars */
bcount=0;
in_quotes=FALSE;
s=*cmdline;
while (1) {
if (*s==0 || ((*s=='\t' || *s==' ') && !in_quotes)) {
/* end of this command line argument */
break;
} else if (*s=='\\') {
/* '\', count them */
bcount++;
} else if ((*s=='"') && ((bcount & 1)==0)) {
/* unescaped '"' */
in_quotes=!in_quotes;
bcount=0;
} else {
/* a regular character */
bcount=0;
}
s++;
len++;
}
arg=HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
if (!arg)
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return NULL;
bcount=0;
in_quotes=FALSE;
d=arg;
s=*cmdline;
while (*s) {
if ((*s=='\t' || *s==' ') && !in_quotes) {
/* end of this command line argument */
break;
} else if (*s=='\\') {
/* '\\' */
*d++=*s++;
bcount++;
} else if (*s=='"') {
/* '"' */
if ((bcount & 1)==0) {
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/* Preceded by an even number of '\', this is half that
* number of '\', plus a quote which we erase.
*/
d-=bcount/2;
in_quotes=!in_quotes;
s++;
} else {
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/* Preceded by an odd number of '\', this is half that
* number of '\' followed by a '"'
*/
d=d-bcount/2-1;
*d++='"';
s++;
}
bcount=0;
} else {
/* a regular character */
*d++=*s++;
bcount=0;
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}
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}
*d=0;
*cmdline=s;
/* skip the remaining spaces */
while (**cmdline=='\t' || **cmdline==' ') {
(*cmdline)++;
}
return arg;
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}
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int WINAPI wWinMain(HINSTANCE instance, HINSTANCE hOldInstance, LPWSTR szCmdLine, int nCmdShow)
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{
HWND hWnd;
LPWSTR szDllName,szEntryPoint;
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void *entry_point;
BOOL unicode = FALSE, win16;
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STARTUPINFOW info;
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HMODULE hDll;
hWnd=NULL;
hDll=NULL;
szDllName=NULL;
/* Initialize the rundll32 class */
register_class();
hWnd = CreateWindowW(L"class_rundll32", L"rundll32", WS_OVERLAPPEDWINDOW|WS_VISIBLE,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, NULL, NULL);
/* Get the dll name and API EntryPoint */
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WINE_TRACE("CmdLine=%s\n",wine_dbgstr_w(szCmdLine));
szDllName = get_next_arg(&szCmdLine);
if (!szDllName || *szDllName==0)
goto CLEANUP;
WINE_TRACE("DllName=%s\n",wine_dbgstr_w(szDllName));
if ((szEntryPoint = wcschr(szDllName, ',' )))
*szEntryPoint++=0;
else
szEntryPoint = get_next_arg(&szCmdLine);
WINE_TRACE("EntryPoint=%s\n",wine_dbgstr_w(szEntryPoint));
/* Load the library */
hDll=LoadLibraryW(szDllName);
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if (hDll)
{
win16 = FALSE;
entry_point = get_entry_point32( hDll, szEntryPoint, &unicode );
}
else
{
HINSTANCE16 dll = load_dll16( szDllName );
if (dll <= 32)
{
/* Windows has a MessageBox here... */
WINE_ERR("Unable to load %s\n",wine_dbgstr_w(szDllName));
goto CLEANUP;
}
win16 = TRUE;
unicode = FALSE;
entry_point = get_entry_point16( dll, szEntryPoint );
}
if (!entry_point)
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{
/* Windows has a MessageBox here... */
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WINE_ERR( "Unable to find the entry point %s in %s\n",
wine_dbgstr_w(szEntryPoint), wine_dbgstr_w(szDllName) );
goto CLEANUP;
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}
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GetStartupInfoW( &info );
if (!(info.dwFlags & STARTF_USESHOWWINDOW)) info.wShowWindow = SW_SHOWDEFAULT;
if (unicode)
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{
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WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
hWnd, instance, wine_dbgstr_w(szCmdLine), info.wShowWindow );
call_entry_point( entry_point, hWnd, instance, szCmdLine, info.wShowWindow );
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}
else
{
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DWORD len = WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, NULL, 0, NULL, NULL );
char *cmdline = HeapAlloc( GetProcessHeap(), 0, len );
if (!cmdline)
goto CLEANUP;
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WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, cmdline, len, NULL, NULL );
WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
hWnd, instance, wine_dbgstr_a(cmdline), info.wShowWindow );
if (win16)
{
HMODULE shell = LoadLibraryW( L"shell32.dll" );
if (shell) pRunDLL_CallEntry16 = (void *)GetProcAddress( shell, (LPCSTR)122 );
if (pRunDLL_CallEntry16)
pRunDLL_CallEntry16( entry_point, hWnd, instance, cmdline, info.wShowWindow );
}
else call_entry_point( entry_point, hWnd, instance, cmdline, info.wShowWindow );
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HeapFree( GetProcessHeap(), 0, cmdline );
}
CLEANUP:
if (hWnd)
DestroyWindow(hWnd);
if (hDll)
FreeLibrary(hDll);
HeapFree(GetProcessHeap(),0,szDllName);
return 0; /* rundll32 always returns 0! */
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}