380 lines
12 KiB
C
380 lines
12 KiB
C
/*
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* PURPOSE: Load a DLL and run an entry point with the specified parameters
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*
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* Copyright 2002 Alberto Massari
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* Copyright 2001-2003 Aric Stewart for CodeWeavers
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* Copyright 2003 Mike McCormack for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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/*
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*
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* rundll32 dllname,entrypoint [arguments]
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*
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* Documentation for this utility found on KB Q164787
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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/* Exclude rarely-used stuff from Windows headers */
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#define WIN32_LEAN_AND_MEAN
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#include "windows.h"
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#include "wine/winbase16.h"
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#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__
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/* wrapper for dlls that declare the entry point incorrectly */
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extern void call_entry_point( void *func, HWND hwnd, HINSTANCE inst, void *cmdline, int show );
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__ASM_GLOBAL_FUNC( call_entry_point,
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"pushl %ebp\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
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"movl %esp,%ebp\n\t"
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__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
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"pushl %edi\n\t"
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__ASM_CFI(".cfi_rel_offset %edi,-4\n\t")
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"pushl %esi\n\t"
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__ASM_CFI(".cfi_rel_offset %esi,-8\n\t")
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"pushl %ebx\n\t"
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__ASM_CFI(".cfi_rel_offset %ebx,-12\n\t")
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"subl $12,%esp\n\t"
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"pushl 24(%ebp)\n\t"
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"pushl 20(%ebp)\n\t"
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"pushl 16(%ebp)\n\t"
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"pushl 12(%ebp)\n\t"
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"call *8(%ebp)\n\t"
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"leal -12(%ebp),%esp\n\t"
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"popl %ebx\n\t"
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__ASM_CFI(".cfi_same_value %ebx\n\t")
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"popl %esi\n\t"
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__ASM_CFI(".cfi_same_value %esi\n\t")
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"popl %edi\n\t"
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__ASM_CFI(".cfi_same_value %edi\n\t")
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"leave\n\t"
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__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
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__ASM_CFI(".cfi_same_value %ebp\n\t")
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"ret" )
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#else
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static void call_entry_point( void *func, HWND hwnd, HINSTANCE inst, void *cmdline, int show )
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{
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void (WINAPI *entry_point)( HWND hwnd, HINSTANCE inst, void *cmdline, int show ) = func;
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entry_point( hwnd, inst, cmdline, show );
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}
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#endif
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/*
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* Control_RunDLL needs to have a window. So lets make us a very
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* simple window class.
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*/
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static const WCHAR szTitle[] = {'r','u','n','d','l','l','3','2',0};
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static const WCHAR szWindowClass[] = {'c','l','a','s','s','_','r','u','n','d','l','l','3','2',0};
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static const WCHAR kernel32[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
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static const WCHAR shell32[] = {'s','h','e','l','l','3','2','.','d','l','l',0};
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static HINSTANCE16 (WINAPI *pLoadLibrary16)(LPCSTR libname);
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static FARPROC16 (WINAPI *pGetProcAddress16)(HMODULE16 hModule, LPCSTR name);
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static void (WINAPI *pRunDLL_CallEntry16)( FARPROC proc, HWND hwnd, HINSTANCE inst,
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LPCSTR cmdline, INT cmdshow );
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static ATOM register_class(void)
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{
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WNDCLASSEXW wcex;
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wcex.cbSize = sizeof(WNDCLASSEXW);
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wcex.style = CS_HREDRAW | CS_VREDRAW;
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wcex.lpfnWndProc = DefWindowProcW;
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wcex.cbClsExtra = 0;
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wcex.cbWndExtra = 0;
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wcex.hInstance = NULL;
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wcex.hIcon = NULL;
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wcex.hCursor = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
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wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
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wcex.lpszMenuName = NULL;
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wcex.lpszClassName = szWindowClass;
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wcex.hIconSm = NULL;
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return RegisterClassExW(&wcex);
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}
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static HINSTANCE16 load_dll16( LPCWSTR dll )
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{
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HINSTANCE16 ret = 0;
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DWORD len = WideCharToMultiByte( CP_ACP, 0, dll, -1, NULL, 0, NULL, NULL );
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char *dllA = HeapAlloc( GetProcessHeap(), 0, len );
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if (dllA)
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{
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WideCharToMultiByte( CP_ACP, 0, dll, -1, dllA, len, NULL, NULL );
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pLoadLibrary16 = (void *)GetProcAddress( GetModuleHandleW(kernel32), (LPCSTR)35 );
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if (pLoadLibrary16) ret = pLoadLibrary16( dllA );
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HeapFree( GetProcessHeap(), 0, dllA );
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}
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return ret;
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}
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static FARPROC16 get_entry_point16( HINSTANCE16 inst, LPCWSTR entry )
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{
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FARPROC16 ret = 0;
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DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
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char *entryA = HeapAlloc( GetProcessHeap(), 0, len );
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if (entryA)
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{
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WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
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pGetProcAddress16 = (void *)GetProcAddress( GetModuleHandleW(kernel32), (LPCSTR)37 );
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if (pGetProcAddress16) ret = pGetProcAddress16( inst, entryA );
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HeapFree( GetProcessHeap(), 0, entryA );
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}
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return ret;
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}
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static void *get_entry_point32( HMODULE module, LPCWSTR entry, BOOL *unicode )
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{
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void *ret;
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/* determine if the entry point is an ordinal */
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if (entry[0] == '#')
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{
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INT_PTR ordinal = wcstol( entry + 1, NULL, 10 );
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if (ordinal <= 0)
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return NULL;
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*unicode = TRUE;
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ret = GetProcAddress( module, (LPCSTR)ordinal );
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}
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else
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{
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DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
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char *entryA = HeapAlloc( GetProcessHeap(), 0, len + 1 );
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if (!entryA)
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return NULL;
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WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
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/* first try the W version */
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*unicode = TRUE;
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strcat( entryA, "W" );
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if (!(ret = GetProcAddress( module, entryA )))
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{
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/* now the A version */
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*unicode = FALSE;
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entryA[strlen(entryA)-1] = 'A';
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if (!(ret = GetProcAddress( module, entryA )))
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{
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/* now the version without suffix */
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entryA[strlen(entryA)-1] = 0;
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ret = GetProcAddress( module, entryA );
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}
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}
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HeapFree( GetProcessHeap(), 0, entryA );
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}
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return ret;
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}
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static LPWSTR get_next_arg(LPWSTR *cmdline)
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{
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LPWSTR s;
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LPWSTR arg,d;
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BOOL in_quotes;
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int bcount,len=0;
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/* count the chars */
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bcount=0;
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in_quotes=FALSE;
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s=*cmdline;
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while (1) {
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if (*s==0 || ((*s=='\t' || *s==' ') && !in_quotes)) {
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/* end of this command line argument */
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break;
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} else if (*s=='\\') {
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/* '\', count them */
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bcount++;
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} else if ((*s=='"') && ((bcount & 1)==0)) {
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/* unescaped '"' */
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in_quotes=!in_quotes;
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bcount=0;
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} else {
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/* a regular character */
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bcount=0;
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}
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s++;
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len++;
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}
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arg=HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
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if (!arg)
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return NULL;
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bcount=0;
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in_quotes=FALSE;
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d=arg;
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s=*cmdline;
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while (*s) {
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if ((*s=='\t' || *s==' ') && !in_quotes) {
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/* end of this command line argument */
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break;
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} else if (*s=='\\') {
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/* '\\' */
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*d++=*s++;
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bcount++;
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} else if (*s=='"') {
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/* '"' */
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if ((bcount & 1)==0) {
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/* Preceded by an even number of '\', this is half that
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* number of '\', plus a quote which we erase.
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*/
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d-=bcount/2;
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in_quotes=!in_quotes;
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s++;
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} else {
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/* Preceded by an odd number of '\', this is half that
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* number of '\' followed by a '"'
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*/
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d=d-bcount/2-1;
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*d++='"';
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s++;
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}
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bcount=0;
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} else {
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/* a regular character */
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*d++=*s++;
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bcount=0;
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}
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}
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*d=0;
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*cmdline=s;
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/* skip the remaining spaces */
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while (**cmdline=='\t' || **cmdline==' ') {
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(*cmdline)++;
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}
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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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{
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HWND hWnd;
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LPWSTR szDllName,szEntryPoint;
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void *entry_point;
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BOOL unicode = FALSE, win16;
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STARTUPINFOW info;
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HMODULE hDll;
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hWnd=NULL;
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hDll=NULL;
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szDllName=NULL;
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/* Initialize the rundll32 class */
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register_class();
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hWnd = CreateWindowW(szWindowClass, szTitle,
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WS_OVERLAPPEDWINDOW|WS_VISIBLE,
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CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, NULL, NULL);
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/* Get the dll name and API EntryPoint */
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WINE_TRACE("CmdLine=%s\n",wine_dbgstr_w(szCmdLine));
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szDllName = get_next_arg(&szCmdLine);
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if (!szDllName || *szDllName==0)
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goto CLEANUP;
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WINE_TRACE("DllName=%s\n",wine_dbgstr_w(szDllName));
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if ((szEntryPoint = wcschr(szDllName, ',' )))
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*szEntryPoint++=0;
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else
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szEntryPoint = get_next_arg(&szCmdLine);
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WINE_TRACE("EntryPoint=%s\n",wine_dbgstr_w(szEntryPoint));
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/* Load the library */
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hDll=LoadLibraryW(szDllName);
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if (hDll)
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{
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win16 = FALSE;
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entry_point = get_entry_point32( hDll, szEntryPoint, &unicode );
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}
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else
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{
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HINSTANCE16 dll = load_dll16( szDllName );
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if (dll <= 32)
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{
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/* Windows has a MessageBox here... */
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WINE_ERR("Unable to load %s\n",wine_dbgstr_w(szDllName));
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goto CLEANUP;
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}
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win16 = TRUE;
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unicode = FALSE;
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entry_point = get_entry_point16( dll, szEntryPoint );
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}
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if (!entry_point)
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{
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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",
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wine_dbgstr_w(szEntryPoint), wine_dbgstr_w(szDllName) );
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goto CLEANUP;
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}
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GetStartupInfoW( &info );
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if (!(info.dwFlags & STARTF_USESHOWWINDOW)) info.wShowWindow = SW_SHOWDEFAULT;
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if (unicode)
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{
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WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
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hWnd, instance, wine_dbgstr_w(szCmdLine), info.wShowWindow );
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call_entry_point( entry_point, hWnd, instance, szCmdLine, info.wShowWindow );
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}
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else
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{
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DWORD len = WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, NULL, 0, NULL, NULL );
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char *cmdline = HeapAlloc( GetProcessHeap(), 0, len );
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if (!cmdline)
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goto CLEANUP;
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WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, cmdline, len, NULL, NULL );
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WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
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hWnd, instance, wine_dbgstr_a(cmdline), info.wShowWindow );
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if (win16)
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{
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HMODULE shell = LoadLibraryW( shell32 );
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if (shell) pRunDLL_CallEntry16 = (void *)GetProcAddress( shell, (LPCSTR)122 );
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if (pRunDLL_CallEntry16)
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pRunDLL_CallEntry16( entry_point, hWnd, instance, cmdline, info.wShowWindow );
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}
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else call_entry_point( entry_point, hWnd, instance, cmdline, info.wShowWindow );
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HeapFree( GetProcessHeap(), 0, cmdline );
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}
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CLEANUP:
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if (hWnd)
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DestroyWindow(hWnd);
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if (hDll)
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FreeLibrary(hDll);
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HeapFree(GetProcessHeap(),0,szDllName);
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return 0; /* rundll32 always returns 0! */
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}
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