/* Utilities - Win32 utilities (Windows NT and Windows '95)
Copyright (C) 1994, 1995, 1996 the Free Software Foundation.
Written 1996 by Juan Grigera<grigera@isis.unlp.edu.ar>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <windows.h>
#include "util_win32.h"
#include "trace_nt.h"
/* int win32_GetPlatform ()
Checks in which OS Midnight Commander is running.
Returns:
OS_WinNT - Windows NT 3.x
OS_Win95 - Windows 4.x
Note: GetVersionEx (Win32API) is called only once.
*/
int win32_GetPlatform ()
{
static int platform = 0;
return (platform ? platform : (platform = win32_GetVersionEx()) );
}
/* int win32_GetVersionEx ()
intended for use by win32_GetPlatform only
*/
int win32_GetVersionEx ()
{
OSVERSIONINFO ovi;
ovi.dwOSVersionInfoSize = sizeof(ovi);
win32APICALL( GetVersionEx(&ovi) );
return ovi.dwPlatformId;
}
/* int win32_GetEXEType (const char* filename)
Determines whether filename (an Executable) is
a Console application (CUI) or a Graphical application(GUI).
filename - Name of executable file to check
Returns: EXE_win16 - Windows 3.x archive or OS/2
EXE_win32CUI - NT or Chicago Console API, also OS/2
EXE_win32GUI - NT or Chicago GUI API
EXE_otherCUI - DOS COM, MZ, ZM, Phar Lap
EXE_Unknown - Unknown
EXE_Error - Couldn't read file/EXE image
TODO: better management of OS/2 images
EXE_CompressedArchive can be easily implemented
Notes: This function parses the executable header (the only ugly way
to do it). If header is not found or not understood,
0 is returned.
Information on NE, LE, LX and MZ taken from Ralf Brown's interrupt
list, under INT 21-function 4B ("EXEC" - LOAD AND/OR EXECUTE PROGRAM),
Tables 0806 - 836.
Parsing of PE header (Win32 signature, "Portable Executable")
taken from MSKBase article Number: Q90493.
*/
/* ---- Executable Signatures ---- */
/* Alternative DOS signagure */
#define IMAGE_DOS_SIGNATURE_ALTERNATIVE 0x4D5A /* ZM */
/* Phar Lap .EXP files */
#define IMAGE_OLDPHARLAP_SIGNATURE 0x504D /* MP */
#define IMAGE_NEWPHARLAP_286_SIGNATURE 0x3250 /* P2 */
#define IMAGE_NEWPHARLAP_386_SIGNATURE 0x3350 /* P3 */
/* New Executables */
#define IMAGE_LX_SIGNATURE 0x584C /* LX */
#define IMAGE_PE_SIGNATURE 0x4550 /* PE */
int win32_GetEXEType (const char* a_szFileName)
{
/* FIXME: MinGW cannot compile this code */
#ifndef __MINGW32__
HANDLE hImage;
DWORD dwDumm;
DWORD SectionOffset;
DWORD CoffHeaderOffset;
WORD wSignature;
/* DWORD MoreDosHeader[16]; */
IMAGE_DOS_HEADER image_dos_header;
IMAGE_FILE_HEADER image_file_header;
IMAGE_OPTIONAL_HEADER image_optional_header;
/* IMAGE_SECTION_HEADER image_section_header; */
/* Open the EXE file - Use Native API for SHARE compatibility */
hImage = CreateFile(a_szFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hImage == INVALID_HANDLE_VALUE) {
win32Trace (("win32_GetEXEType: Could not open file %s. API Error %d.", a_szFileName, GetLastError()));
return EXE_Error;
}
/* Read the MZ (DOS) image header. */
win32APICALL( ReadFile (hImage, (LPVOID)&image_dos_header, sizeof(IMAGE_DOS_HEADER), &dwDumm, NULL) );
switch (image_dos_header.e_magic) {
case IMAGE_DOS_SIGNATURE: /* MZ or ZM */
case IMAGE_DOS_SIGNATURE_ALTERNATIVE:
break;
case IMAGE_OLDPHARLAP_SIGNATURE: /* MP, P2, P3: Phar Lap executables */
case IMAGE_NEWPHARLAP_286_SIGNATURE:
case IMAGE_NEWPHARLAP_386_SIGNATURE:
return EXE_otherCUI;
default:
return EXE_otherCUI; /* Probably .COM? */
}
/* Read more MS-DOS header. */
/* win32APICALL( ReadFile (hImage, MoreDosHeader, sizeof(MoreDosHeader)); */
/* Get new executable header */
CoffHeaderOffset = SetFilePointer(hImage, image_dos_header.e_lfanew, NULL, FILE_BEGIN);
/* + sizeof(ULONG); */
win32APICALL( ReadFile (hImage, (LPVOID) &wSignature, sizeof(WORD), &dwDumm, NULL) );
switch (wSignature) {
case IMAGE_PE_SIGNATURE: /* PE - Portable Executable */
break;
case IMAGE_OS2_SIGNATURE: /* NE - New Executable OS/2 and Windows 3.x */
case IMAGE_OS2_SIGNATURE_LE: /* LE - Linear Execuable (Windows 3.x) */
case IMAGE_LX_SIGNATURE: /* LX - Linear Execuable (OS/2) */
return EXE_win16;
default:
return EXE_Unknown; /* unknown New Executable or bad pointer */
}
/* Continue parsing PE (COFF-like) */
SectionOffset = CoffHeaderOffset + IMAGE_SIZEOF_FILE_HEADER + IMAGE_SIZEOF_NT_OPTIONAL_HEADER;
win32APICALL( ReadFile(hImage, (LPVOID) &image_file_header, IMAGE_SIZEOF_FILE_HEADER, &dwDumm, NULL) );
/* Read optional header. */
win32APICALL( ReadFile(hImage, (LPVOID) &image_optional_header, IMAGE_SIZEOF_NT_OPTIONAL_HEADER, &dwDumm, NULL) );
switch (image_optional_header.Subsystem) {
case IMAGE_SUBSYSTEM_WINDOWS_GUI:
return EXE_win32GUI;
case IMAGE_SUBSYSTEM_WINDOWS_CUI:
case IMAGE_SUBSYSTEM_OS2_CUI:
case IMAGE_SUBSYSTEM_POSIX_CUI:
return EXE_win32CUI;
case IMAGE_SUBSYSTEM_UNKNOWN:
case IMAGE_SUBSYSTEM_NATIVE:
return EXE_Unknown; /* FIXME: what is "NATIVE??" */
default:
win32Trace(("Unknown type %u.\n", image_optional_header.Subsystem));
return EXE_Unknown;
}
#else
return EXE_Unknown;
#endif /* !__MINGW32__ */
}