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/* $Id: VBoxPeSetVersion.cpp $ */
/** @file
* IPRT - Change the OS and SubSystem version to value suitable for NT v3.1.
*
* Also make sure the IAT is writable, since NT v3.1 expects this. These are
* tricks necessary to make binaries created by newer Visual C++ linkers work
* on ancient NT version like W2K, NT4 and NT 3.x.
*/
/*
* Copyright (C) 2012-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* 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, in version 3 of the
* License.
*
* 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, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/formats/mz.h>
#include <iprt/formats/pecoff.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*********************************************************************************************************************************
* Defined Constants And Macros *
*********************************************************************************************************************************/
#define MK_VER(a_uHi, a_uLo) ( ((a_uHi) << 8) | (a_uLo))
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
static const char *g_pszFilename;
static unsigned g_cVerbosity = 0;
static int Error(const char *pszFormat, ...)
{
va_list va;
va_start(va, pszFormat);
char szTmp[1024];
_vsnprintf(szTmp, sizeof(szTmp), pszFormat, va);
va_end(va);
fprintf(stderr, "VBoxPeSetVersion: %s: error: %s\n", g_pszFilename, szTmp);
return RTEXITCODE_FAILURE;
}
static void Info(unsigned iLevel, const char *pszFormat, ...)
{
if (iLevel <= g_cVerbosity)
{
va_list va;
va_start(va, pszFormat);
char szTmp[1024];
_vsnprintf(szTmp, sizeof(szTmp), pszFormat, va);
va_end(va);
fprintf(stderr, "VBoxPeSetVersion: %s: info: %s\n", g_pszFilename, szTmp);
}
}
static int UpdateFile(FILE *pFile, unsigned uNtVersion, PIMAGE_SECTION_HEADER *ppaShdr)
{
/*
* Locate and read the PE header.
*
* Note! We'll be reading the 64-bit size even for 32-bit since the difference
* is 16 bytes, which is less than a section header, so it won't be a problem.
*/
unsigned long offNtHdrs;
{
IMAGE_DOS_HEADER MzHdr;
if (fread(&MzHdr, sizeof(MzHdr), 1, pFile) != 1)
return Error("Failed to read MZ header: %s", strerror(errno));
if (MzHdr.e_magic != IMAGE_DOS_SIGNATURE)
return Error("Invalid MZ magic: %#x", MzHdr.e_magic);
offNtHdrs = MzHdr.e_lfanew;
}
if (fseek(pFile, offNtHdrs, SEEK_SET) != 0)
return Error("Failed to seek to PE header at %#lx: %s", offNtHdrs, strerror(errno));
union
{
IMAGE_NT_HEADERS32 x32;
IMAGE_NT_HEADERS64 x64;
} NtHdrs,
NtHdrsNew;
if (fread(&NtHdrs, sizeof(NtHdrs), 1, pFile) != 1)
return Error("Failed to read PE header at %#lx: %s", offNtHdrs, strerror(errno));
/*
* Validate it a little bit.
*/
if (NtHdrs.x32.Signature != IMAGE_NT_SIGNATURE)
return Error("Invalid PE signature: %#x", NtHdrs.x32.Signature);
uint32_t cbNewHdrs;
if (NtHdrs.x32.FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
{
if (NtHdrs.x64.FileHeader.SizeOfOptionalHeader != sizeof(NtHdrs.x64.OptionalHeader))
return Error("Invalid optional header size: %#x", NtHdrs.x64.FileHeader.SizeOfOptionalHeader);
if (NtHdrs.x64.OptionalHeader.Magic != IMAGE_NT_OPTIONAL_HDR64_MAGIC)
return Error("Invalid optional header magic: %#x", NtHdrs.x64.OptionalHeader.Magic);
if (!uNtVersion)
uNtVersion = MK_VER(5, 2);
else if (uNtVersion < MK_VER(5, 2))
return Error("Selected version is too old for AMD64: %u.%u", uNtVersion >> 8, uNtVersion & 0xff);
cbNewHdrs = sizeof(NtHdrsNew.x64);
}
else if (NtHdrs.x32.FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
return Error("Not I386 or AMD64 machine: %#x", NtHdrs.x32.FileHeader.Machine);
else
{
if (NtHdrs.x32.FileHeader.SizeOfOptionalHeader != sizeof(NtHdrs.x32.OptionalHeader))
return Error("Invalid optional header size: %#x", NtHdrs.x32.FileHeader.SizeOfOptionalHeader);
if (NtHdrs.x32.OptionalHeader.Magic != IMAGE_NT_OPTIONAL_HDR32_MAGIC)
return Error("Invalid optional header magic: %#x", NtHdrs.x32.OptionalHeader.Magic);
if (!uNtVersion)
uNtVersion = MK_VER(3, 10);
cbNewHdrs = sizeof(NtHdrsNew.x32);
}
/*
* Do the header modifications.
*/
memcpy(&NtHdrsNew, &NtHdrs, sizeof(NtHdrsNew));
NtHdrsNew.x32.OptionalHeader.MajorOperatingSystemVersion = uNtVersion >> 8;
NtHdrsNew.x32.OptionalHeader.MinorOperatingSystemVersion = uNtVersion & 0xff;
NtHdrsNew.x32.OptionalHeader.MajorSubsystemVersion = uNtVersion >> 8;
NtHdrsNew.x32.OptionalHeader.MinorSubsystemVersion = uNtVersion & 0xff;
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MajorOperatingSystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MajorOperatingSystemVersion);
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MinorOperatingSystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MinorOperatingSystemVersion);
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MajorSubsystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MajorSubsystemVersion);
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MinorSubsystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MinorSubsystemVersion);
if (uNtVersion <= MK_VER(3, 50))
{
NtHdrsNew.x32.OptionalHeader.MajorOperatingSystemVersion = 1;
NtHdrsNew.x32.OptionalHeader.MinorOperatingSystemVersion = 0;
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MajorOperatingSystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MajorOperatingSystemVersion);
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MinorOperatingSystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MinorOperatingSystemVersion);
}
if (memcmp(&NtHdrsNew, &NtHdrs, sizeof(NtHdrs)))
{
/** @todo calc checksum. */
NtHdrsNew.x32.OptionalHeader.CheckSum = 0;
AssertCompileMembersAtSameOffset(IMAGE_NT_HEADERS32, OptionalHeader.MinorOperatingSystemVersion, IMAGE_NT_HEADERS64, OptionalHeader.MinorOperatingSystemVersion);
if ( NtHdrsNew.x32.OptionalHeader.MajorOperatingSystemVersion != NtHdrs.x32.OptionalHeader.MajorOperatingSystemVersion
|| NtHdrsNew.x32.OptionalHeader.MinorOperatingSystemVersion != NtHdrs.x32.OptionalHeader.MinorOperatingSystemVersion)
Info(1,"OperatingSystemVersion %u.%u -> %u.%u",
NtHdrs.x32.OptionalHeader.MajorOperatingSystemVersion, NtHdrs.x32.OptionalHeader.MinorOperatingSystemVersion,
NtHdrsNew.x32.OptionalHeader.MajorOperatingSystemVersion, NtHdrsNew.x32.OptionalHeader.MinorOperatingSystemVersion);
if ( NtHdrsNew.x32.OptionalHeader.MajorSubsystemVersion != NtHdrs.x32.OptionalHeader.MajorSubsystemVersion
|| NtHdrsNew.x32.OptionalHeader.MinorSubsystemVersion != NtHdrs.x32.OptionalHeader.MinorSubsystemVersion)
Info(1,"SubsystemVersion %u.%u -> %u.%u",
NtHdrs.x32.OptionalHeader.MajorSubsystemVersion, NtHdrs.x32.OptionalHeader.MinorSubsystemVersion,
NtHdrsNew.x32.OptionalHeader.MajorSubsystemVersion, NtHdrsNew.x32.OptionalHeader.MinorSubsystemVersion);
if (fseek(pFile, offNtHdrs, SEEK_SET) != 0)
return Error("Failed to seek to PE header at %#lx: %s", offNtHdrs, strerror(errno));
if (fwrite(&NtHdrsNew, cbNewHdrs, 1, pFile) != 1)
return Error("Failed to write PE header at %#lx: %s", offNtHdrs, strerror(errno));
}
/*
* Make the IAT writable for NT 3.1 and drop the non-cachable flag from .bss.
*
* The latter is a trick we use to prevent the linker from merging .data and .bss,
* because NT 3.1 does not honor Misc.VirtualSize and won't zero padd the .bss part
* if it's not zero padded in the file. This seemed simpler than adding zero padding.
*/
if ( uNtVersion <= MK_VER(3, 10)
&& NtHdrsNew.x32.FileHeader.NumberOfSections > 0)
{
uint32_t cbShdrs = sizeof(IMAGE_SECTION_HEADER) * NtHdrsNew.x32.FileHeader.NumberOfSections;
PIMAGE_SECTION_HEADER paShdrs = (PIMAGE_SECTION_HEADER)calloc(1, cbShdrs);
if (!paShdrs)
return Error("Out of memory");
*ppaShdr = paShdrs;
unsigned long offShdrs = offNtHdrs
+ RT_UOFFSETOF_DYN(IMAGE_NT_HEADERS32,
OptionalHeader.DataDirectory[NtHdrsNew.x32.OptionalHeader.NumberOfRvaAndSizes]);
if (fseek(pFile, offShdrs, SEEK_SET) != 0)
return Error("Failed to seek to section headers at %#lx: %s", offShdrs, strerror(errno));
if (fread(paShdrs, cbShdrs, 1, pFile) != 1)
return Error("Failed to read section headers at %#lx: %s", offShdrs, strerror(errno));
bool fFoundBss = false;
uint32_t uRvaEnd = NtHdrsNew.x32.OptionalHeader.SizeOfImage;
uint32_t uRvaIat = NtHdrsNew.x32.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IAT].Size > 0
? NtHdrsNew.x32.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IAT].VirtualAddress : UINT32_MAX;
uint32_t i = NtHdrsNew.x32.FileHeader.NumberOfSections;
while (i-- > 0)
if (!(paShdrs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD))
{
bool fModified = false;
if (uRvaIat >= paShdrs[i].VirtualAddress && uRvaIat < uRvaEnd)
{
if (!(paShdrs[i].Characteristics & IMAGE_SCN_MEM_WRITE))
{
paShdrs[i].Characteristics |= IMAGE_SCN_MEM_WRITE;
fModified = true;
}
uRvaIat = UINT32_MAX;
}
if ( !fFoundBss
&& strcmp((const char *)paShdrs[i].Name, ".bss") == 0)
{
if (paShdrs[i].Characteristics & IMAGE_SCN_MEM_NOT_CACHED)
{
paShdrs[i].Characteristics &= ~IMAGE_SCN_MEM_NOT_CACHED;
fModified = true;
}
fFoundBss = true;
}
if (fModified)
{
unsigned long offShdr = offShdrs + i * sizeof(IMAGE_SECTION_HEADER);
if (fseek(pFile, offShdr, SEEK_SET) != 0)
return Error("Failed to seek to section header #%u at %#lx: %s", i, offShdr, strerror(errno));
if (fwrite(&paShdrs[i], sizeof(IMAGE_SECTION_HEADER), 1, pFile) != 1)
return Error("Failed to write %8.8s section header header at %#lx: %s",
paShdrs[i].Name, offShdr, strerror(errno));
if (uRvaIat == UINT32_MAX && fFoundBss)
break;
}
/* Advance */
uRvaEnd = paShdrs[i].VirtualAddress;
}
}
return RTEXITCODE_SUCCESS;
}
static int Usage(FILE *pOutput)
{
fprintf(pOutput,
"Usage: VBoxPeSetVersion [options] <PE-image>\n"
"Options:\n"
" -v, --verbose\n"
" Increases verbosity.\n"
" -q, --quiet\n"
" Quiet operation (default).\n"
" --nt31, --nt350, --nt351, --nt4, --w2k, --xp, --w2k3, --vista,\n"
" --w7, --w8, --w81, --w10\n"
" Which version to set. Default: --nt31\n"
);
return RTEXITCODE_SYNTAX;
}
/** @todo Rewrite this so it can take options and print out error messages. */
int main(int argc, char **argv)
{
/*
* Parse arguments.
* This stucks
*/
unsigned uNtVersion = 0;
const char *pszFilename = NULL;
bool fAcceptOptions = true;
for (int i = 1; i < argc; i++)
{
const char *psz = argv[i];
if (fAcceptOptions && *psz == '-')
{
char ch = psz[1];
psz += 2;
if (ch == '-')
{
if (!*psz)
{
fAcceptOptions = false;
continue;
}
if (strcmp(psz, "verbose") == 0)
ch = 'v';
else if (strcmp(psz, "quiet") == 0)
ch = 'q';
else if (strcmp(psz, "help") == 0)
ch = 'h';
else if (strcmp(psz, "version") == 0)
ch = 'V';
else
{
if (strcmp(psz, "nt31") == 0)
uNtVersion = MK_VER(3,10);
else if (strcmp(psz, "nt350") == 0)
uNtVersion = MK_VER(3,50);
else if (strcmp(psz, "nt351") == 0)
uNtVersion = MK_VER(3,51);
else if (strcmp(psz, "nt4") == 0)
uNtVersion = MK_VER(4,0);
else if (strcmp(psz, "w2k") == 0)
uNtVersion = MK_VER(5,0);
else if (strcmp(psz, "xp") == 0)
uNtVersion = MK_VER(5,1);
else if (strcmp(psz, "w2k3") == 0)
uNtVersion = MK_VER(5,2);
else if (strcmp(psz, "vista") == 0)
uNtVersion = MK_VER(6,0);
else if (strcmp(psz, "w7") == 0)
uNtVersion = MK_VER(6,1);
else if (strcmp(psz, "w8") == 0)
uNtVersion = MK_VER(6,2);
else if (strcmp(psz, "w81") == 0)
uNtVersion = MK_VER(6,3);
else if (strcmp(psz, "w10") == 0)
uNtVersion = MK_VER(10,0);
else
{
fprintf(stderr, "VBoxPeSetVersion: syntax error: Unknown option: --%s\n", psz);
return RTEXITCODE_SYNTAX;
}
continue;
}
psz = " ";
}
do
{
switch (ch)
{
case 'q':
g_cVerbosity = 0;
break;
case 'v':
g_cVerbosity++;
break;
case 'V':
printf("2.0\n");
return RTEXITCODE_SUCCESS;
case 'h':
Usage(stdout);
return RTEXITCODE_SUCCESS;
default:
fprintf(stderr, "VBoxPeSetVersion: syntax error: Unknown option: -%c\n", ch ? ch : ' ');
return RTEXITCODE_SYNTAX;
}
} while ((ch = *psz++) != '\0');
}
else if (!pszFilename)
pszFilename = psz;
else
{
fprintf(stderr, "VBoxPeSetVersion: syntax error: More than one PE-image specified!\n");
return RTEXITCODE_SYNTAX;
}
}
if (!pszFilename)
{
fprintf(stderr, "VBoxPeSetVersion: syntax error: No PE-image specified!\n");
return RTEXITCODE_SYNTAX;
}
g_pszFilename = pszFilename;
/*
* Process the file.
*/
int rcExit;
FILE *pFile = fopen(pszFilename, "r+b");
if (pFile)
{
PIMAGE_SECTION_HEADER paShdrs = NULL;
rcExit = UpdateFile(pFile, uNtVersion, &paShdrs);
if (paShdrs)
free(paShdrs);
if (fclose(pFile) != 0)
rcExit = Error("fclose failed on '%s': %s", pszFilename, strerror(errno));
}
else
rcExit = Error("Failed to open '%s' for updating: %s", pszFilename, strerror(errno));
return rcExit;
}
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