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/*
* Implementation of VERSION.DLL - Resource Access routines
*
* Copyright 1996,1997 Marcus Meissner
* Copyright 1997 David Cuthbert
* Copyright 1999 Ulrich Weigand
*
* 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
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "lzexpand.h"
#include "winver.h"
#include "wine/unicode.h"
#include "wine/debug.h"
typedef struct
{
WORD offset;
WORD length;
WORD flags;
WORD id;
WORD handle;
WORD usage;
} NE_NAMEINFO;
typedef struct
{
WORD type_id;
WORD count;
DWORD resloader;
} NE_TYPEINFO;
WINE_DEFAULT_DEBUG_CHANNEL(ver);
/**********************************************************************
* find_entry_by_id
*
* Find an entry by id in a resource directory
* Copied from loader/pe_resource.c
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
WORD id, const void *root )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
int min, max, pos;
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
min = dir->NumberOfNamedEntries;
max = min + dir->NumberOfIdEntries - 1;
while (min <= max)
{
pos = (min + max) / 2;
if (entry[pos].u1.s2.Id == id)
return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s3.OffsetToDirectory);
if (entry[pos].u1.s2.Id > id) max = pos - 1;
else min = pos + 1;
}
return NULL;
}
/**********************************************************************
* find_entry_default
*
* Find a default entry in a resource directory
* Copied from loader/pe_resource.c
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
const void *root )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s3.OffsetToDirectory);
}
/***********************************************************************
* read_xx_header [internal]
*/
static int read_xx_header( HFILE lzfd )
{
IMAGE_DOS_HEADER mzh;
char magic[3];
LZSeek( lzfd, 0, SEEK_SET );
if ( sizeof(mzh) != LZRead( lzfd, (LPSTR)&mzh, sizeof(mzh) ) )
return 0;
if ( mzh.e_magic != IMAGE_DOS_SIGNATURE )
{
if (!memcmp( &mzh, "\177ELF", 4 )) return 1; /* ELF */
if (*(UINT *)&mzh == 0xfeedface || *(UINT *)&mzh == 0xcefaedfe) return 1; /* Mach-O */
return 0;
}
LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
if ( 2 != LZRead( lzfd, magic, 2 ) )
return 0;
LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
if ( magic[0] == 'N' && magic[1] == 'E' )
return IMAGE_OS2_SIGNATURE;
if ( magic[0] == 'P' && magic[1] == 'E' )
return IMAGE_NT_SIGNATURE;
magic[2] = '\0';
WARN("Can't handle %s files.\n", magic );
return 0;
}
/***********************************************************************
* find_ne_resource [internal]
*/
static BOOL find_ne_resource( HFILE lzfd, DWORD *resLen, DWORD *resOff )
{
const WORD typeid = VS_FILE_INFO | 0x8000;
const WORD resid = VS_VERSION_INFO | 0x8000;
IMAGE_OS2_HEADER nehd;
NE_TYPEINFO *typeInfo;
NE_NAMEINFO *nameInfo;
DWORD nehdoffset;
LPBYTE resTab;
DWORD resTabSize;
int count;
/* Read in NE header */
nehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
if ( sizeof(nehd) != LZRead( lzfd, (LPSTR)&nehd, sizeof(nehd) ) ) return 0;
resTabSize = nehd.ne_restab - nehd.ne_rsrctab;
if ( !resTabSize )
{
TRACE("No resources in NE dll\n" );
return FALSE;
}
/* Read in resource table */
resTab = HeapAlloc( GetProcessHeap(), 0, resTabSize );
if ( !resTab ) return FALSE;
LZSeek( lzfd, nehd.ne_rsrctab + nehdoffset, SEEK_SET );
if ( resTabSize != LZRead( lzfd, (char*)resTab, resTabSize ) )
{
HeapFree( GetProcessHeap(), 0, resTab );
return FALSE;
}
/* Find resource */
typeInfo = (NE_TYPEINFO *)(resTab + 2);
while (typeInfo->type_id)
{
if (typeInfo->type_id == typeid) goto found_type;
typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
typeInfo->count * sizeof(NE_NAMEINFO));
}
TRACE("No typeid entry found\n" );
HeapFree( GetProcessHeap(), 0, resTab );
return FALSE;
found_type:
nameInfo = (NE_NAMEINFO *)(typeInfo + 1);
for (count = typeInfo->count; count > 0; count--, nameInfo++)
if (nameInfo->id == resid) goto found_name;
TRACE("No resid entry found\n" );
HeapFree( GetProcessHeap(), 0, resTab );
return FALSE;
found_name:
/* Return resource data */
if ( resLen ) *resLen = nameInfo->length << *(WORD *)resTab;
if ( resOff ) *resOff = nameInfo->offset << *(WORD *)resTab;
HeapFree( GetProcessHeap(), 0, resTab );
return TRUE;
}
/***********************************************************************
* find_pe_resource [internal]
*/
static BOOL find_pe_resource( HFILE lzfd, DWORD *resLen, DWORD *resOff )
{
union
{
IMAGE_NT_HEADERS32 nt32;
IMAGE_NT_HEADERS64 nt64;
} pehd;
DWORD pehdoffset;
PIMAGE_DATA_DIRECTORY resDataDir;
PIMAGE_SECTION_HEADER sections;
LPBYTE resSection;
DWORD section_size, data_size;
const void *resDir;
const IMAGE_RESOURCE_DIRECTORY *resPtr;
const IMAGE_RESOURCE_DATA_ENTRY *resData;
int i, len, nSections;
BOOL ret = FALSE;
/* Read in PE header */
pehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
len = LZRead( lzfd, (LPSTR)&pehd, sizeof(pehd) );
if (len < sizeof(pehd.nt32.FileHeader)) return 0;
if (len < sizeof(pehd)) memset( (char *)&pehd + len, 0, sizeof(pehd) - len );
switch (pehd.nt32.OptionalHeader.Magic)
{
case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
resDataDir = pehd.nt32.OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_RESOURCE;
break;
case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
resDataDir = pehd.nt64.OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_RESOURCE;
break;
default:
return 0;
}
if ( !resDataDir->Size )
{
TRACE("No resources in PE dll\n" );
return FALSE;
}
/* Read in section table */
nSections = pehd.nt32.FileHeader.NumberOfSections;
sections = HeapAlloc( GetProcessHeap(), 0,
nSections * sizeof(IMAGE_SECTION_HEADER) );
if ( !sections ) return FALSE;
len = FIELD_OFFSET( IMAGE_NT_HEADERS32, OptionalHeader ) + pehd.nt32.FileHeader.SizeOfOptionalHeader;
LZSeek( lzfd, pehdoffset + len, SEEK_SET );
if ( nSections * sizeof(IMAGE_SECTION_HEADER) !=
LZRead( lzfd, (LPSTR)sections, nSections * sizeof(IMAGE_SECTION_HEADER) ) )
{
HeapFree( GetProcessHeap(), 0, sections );
return FALSE;
}
/* Find resource section */
for ( i = 0; i < nSections; i++ )
if ( resDataDir->VirtualAddress >= sections[i].VirtualAddress
&& resDataDir->VirtualAddress < sections[i].VirtualAddress +
sections[i].SizeOfRawData )
break;
if ( i == nSections )
{
HeapFree( GetProcessHeap(), 0, sections );
TRACE("Couldn't find resource section\n" );
return FALSE;
}
/* Read in resource section */
data_size = sections[i].SizeOfRawData;
section_size = max( data_size, sections[i].Misc.VirtualSize );
resSection = HeapAlloc( GetProcessHeap(), 0, section_size );
if ( !resSection )
{
HeapFree( GetProcessHeap(), 0, sections );
return FALSE;
}
LZSeek( lzfd, sections[i].PointerToRawData, SEEK_SET );
if (data_size != LZRead( lzfd, (char*)resSection, data_size )) goto done;
if (data_size < section_size) memset( (char *)resSection + data_size, 0, section_size - data_size );
/* Find resource */
resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);
resPtr = resDir;
resPtr = find_entry_by_id( resPtr, VS_FILE_INFO, resDir );
if ( !resPtr )
{
TRACE("No typeid entry found\n" );
goto done;
}
resPtr = find_entry_by_id( resPtr, VS_VERSION_INFO, resDir );
if ( !resPtr )
{
TRACE("No resid entry found\n" );
goto done;
}
resPtr = find_entry_default( resPtr, resDir );
if ( !resPtr )
{
TRACE("No default language entry found\n" );
goto done;
}
/* Find resource data section */
resData = (const IMAGE_RESOURCE_DATA_ENTRY*)resPtr;
for ( i = 0; i < nSections; i++ )
if ( resData->OffsetToData >= sections[i].VirtualAddress
&& resData->OffsetToData < sections[i].VirtualAddress +
sections[i].SizeOfRawData )
break;
if ( i == nSections )
{
TRACE("Couldn't find resource data section\n" );
goto done;
}
/* Return resource data */
if ( resLen ) *resLen = resData->Size;
if ( resOff ) *resOff = resData->OffsetToData - sections[i].VirtualAddress
+ sections[i].PointerToRawData;
ret = TRUE;
done:
HeapFree( GetProcessHeap(), 0, resSection );
HeapFree( GetProcessHeap(), 0, sections );
return ret;
}
/***********************************************************************
* find_version_resource [internal]
*/
DWORD find_version_resource( HFILE lzfd, DWORD *reslen, DWORD *offset )
{
DWORD magic = read_xx_header( lzfd );
switch (magic)
{
case IMAGE_OS2_SIGNATURE:
if (!find_ne_resource( lzfd, reslen, offset )) magic = 0;
break;
case IMAGE_NT_SIGNATURE:
if (!find_pe_resource( lzfd, reslen, offset )) magic = 0;
break;
}
return magic;
}