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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "winbase.h"
#include "lzexpand.h"
#include "wine/unicode.h"
#include "wine/winbase16.h"
#include "wine/winuser16.h"
#include "winver.h"
#include "wine/debug.h"
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 (IMAGE_RESOURCE_DIRECTORY *)((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 (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
}
/**********************************************************************
* find_entry_by_name
*
* Find an entry by name in a resource directory
* Copied from loader/pe_resource.c
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_name( const IMAGE_RESOURCE_DIRECTORY *dir,
LPCSTR name, const void *root )
{
const IMAGE_RESOURCE_DIRECTORY *ret = NULL;
LPWSTR nameW;
DWORD namelen;
if (!HIWORD(name)) return find_entry_by_id( dir, LOWORD(name), root );
if (name[0] == '#')
{
return find_entry_by_id( dir, atoi(name+1), root );
}
namelen = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
if ((nameW = HeapAlloc( GetProcessHeap(), 0, namelen * sizeof(WCHAR) )))
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
const IMAGE_RESOURCE_DIR_STRING_U *str;
int min, max, res, pos;
MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, namelen );
namelen--; /* remove terminating null */
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
min = 0;
max = dir->NumberOfNamedEntries - 1;
while (min <= max)
{
pos = (min + max) / 2;
str = (IMAGE_RESOURCE_DIR_STRING_U *)((char *)root + entry[pos].u1.s1.NameOffset);
res = strncmpiW( nameW, str->NameString, str->Length );
if (!res && namelen == str->Length)
{
ret = (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
break;
}
if (res < 0) max = pos - 1;
else min = pos + 1;
}
HeapFree( GetProcessHeap(), 0, nameW );
}
return ret;
}
/***********************************************************************
* 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 )
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;
}
/***********************************************************************
* load_ne_resource [internal]
*/
static BOOL find_ne_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
DWORD *resLen, DWORD *resOff )
{
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, resTab, resTabSize ) )
{
HeapFree( GetProcessHeap(), 0, resTab );
return FALSE;
}
/* Find resource */
typeInfo = (NE_TYPEINFO *)(resTab + 2);
if (HIWORD(typeid) != 0) /* named type */
{
BYTE len = strlen( typeid );
while (typeInfo->type_id)
{
if (!(typeInfo->type_id & 0x8000))
{
BYTE *p = resTab + typeInfo->type_id;
if ((*p == len) && !strncasecmp( p+1, typeid, len )) goto found_type;
}
typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
typeInfo->count * sizeof(NE_NAMEINFO));
}
}
else /* numeric type id */
{
WORD id = LOWORD(typeid) | 0x8000;
while (typeInfo->type_id)
{
if (typeInfo->type_id == id) goto found_type;
typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
typeInfo->count * sizeof(NE_NAMEINFO));
}
}
TRACE("No typeid entry found for %p\n", typeid );
HeapFree( GetProcessHeap(), 0, resTab );
return FALSE;
found_type:
nameInfo = (NE_NAMEINFO *)(typeInfo + 1);
if (HIWORD(resid) != 0) /* named resource */
{
BYTE len = strlen( resid );
for (count = typeInfo->count; count > 0; count--, nameInfo++)
{
BYTE *p = resTab + nameInfo->id;
if (nameInfo->id & 0x8000) continue;
if ((*p == len) && !strncasecmp( p+1, resid, len )) goto found_name;
}
}
else /* numeric resource id */
{
WORD id = LOWORD(resid) | 0x8000;
for (count = typeInfo->count; count > 0; count--, nameInfo++)
if (nameInfo->id == id) goto found_name;
}
TRACE("No resid entry found for %p\n", typeid );
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;
}
/***********************************************************************
* load_pe_resource [internal]
*/
static BOOL find_pe_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
DWORD *resLen, DWORD *resOff )
{
IMAGE_NT_HEADERS pehd;
DWORD pehdoffset;
PIMAGE_DATA_DIRECTORY resDataDir;
PIMAGE_SECTION_HEADER sections;
LPBYTE resSection;
DWORD resSectionSize;
const void *resDir;
const IMAGE_RESOURCE_DIRECTORY *resPtr;
const IMAGE_RESOURCE_DATA_ENTRY *resData;
int i, nSections;
BOOL ret = FALSE;
/* Read in PE header */
pehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
if ( sizeof(pehd) != LZRead( lzfd, (LPSTR)&pehd, sizeof(pehd) ) ) return 0;
resDataDir = pehd.OptionalHeader.DataDirectory+IMAGE_FILE_RESOURCE_DIRECTORY;
if ( !resDataDir->Size )
{
TRACE("No resources in PE dll\n" );
return FALSE;
}
/* Read in section table */
nSections = pehd.FileHeader.NumberOfSections;
sections = HeapAlloc( GetProcessHeap(), 0,
nSections * sizeof(IMAGE_SECTION_HEADER) );
if ( !sections ) return FALSE;
LZSeek( lzfd, pehdoffset +
sizeof(DWORD) + /* Signature */
sizeof(IMAGE_FILE_HEADER) +
pehd.FileHeader.SizeOfOptionalHeader, 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 */
resSectionSize = sections[i].SizeOfRawData;
resSection = HeapAlloc( GetProcessHeap(), 0, resSectionSize );
if ( !resSection )
{
HeapFree( GetProcessHeap(), 0, sections );
return FALSE;
}
LZSeek( lzfd, sections[i].PointerToRawData, SEEK_SET );
if ( resSectionSize != LZRead( lzfd, resSection, resSectionSize ) ) goto done;
/* Find resource */
resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);
resPtr = (PIMAGE_RESOURCE_DIRECTORY)resDir;
resPtr = find_entry_by_name( resPtr, typeid, resDir );
if ( !resPtr )
{
TRACE("No typeid entry found for %p\n", typeid );
goto done;
}
resPtr = find_entry_by_name( resPtr, resid, resDir );
if ( !resPtr )
{
TRACE("No resid entry found for %p\n", resid );
goto done;
}
resPtr = find_entry_default( resPtr, resDir );
if ( !resPtr )
{
TRACE("No default language entry found for %p\n", resid );
goto done;
}
/* Find resource data section */
resData = (PIMAGE_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;
}
/*************************************************************************
* GetFileResourceSize [VER.2]
*/
DWORD WINAPI GetFileResourceSize16( LPCSTR lpszFileName, LPCSTR lpszResType,
LPCSTR lpszResId, LPDWORD lpdwFileOffset )
{
BOOL retv = FALSE;
HFILE lzfd;
OFSTRUCT ofs;
DWORD reslen;
TRACE("(%s,type=0x%lx,id=0x%lx,off=%p)\n",
debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
lpszResId );
lzfd = LZOpenFileA( (LPSTR)lpszFileName, &ofs, OF_READ );
if ( lzfd < 0 ) return 0;
switch ( read_xx_header( lzfd ) )
{
case IMAGE_OS2_SIGNATURE:
retv = find_ne_resource( lzfd, lpszResType, lpszResId,
&reslen, lpdwFileOffset );
break;
case IMAGE_NT_SIGNATURE:
retv = find_pe_resource( lzfd, lpszResType, lpszResId,
&reslen, lpdwFileOffset );
break;
}
LZClose( lzfd );
return retv? reslen : 0;
}
/*************************************************************************
* GetFileResource [VER.3]
*/
DWORD WINAPI GetFileResource16( LPCSTR lpszFileName, LPCSTR lpszResType,
LPCSTR lpszResId, DWORD dwFileOffset,
DWORD dwResLen, LPVOID lpvData )
{
BOOL retv = FALSE;
HFILE lzfd;
OFSTRUCT ofs;
DWORD reslen = dwResLen;
TRACE("(%s,type=0x%lx,id=0x%lx,off=%ld,len=%ld,data=%p)\n",
debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
dwFileOffset, dwResLen, lpvData );
lzfd = LZOpenFileA( (LPSTR)lpszFileName, &ofs, OF_READ );
if ( lzfd < 0 ) return 0;
if ( !dwFileOffset )
{
switch ( read_xx_header( lzfd ) )
{
case IMAGE_OS2_SIGNATURE:
retv = find_ne_resource( lzfd, lpszResType, lpszResId,
&reslen, &dwFileOffset );
break;
case IMAGE_NT_SIGNATURE:
retv = find_pe_resource( lzfd, lpszResType, lpszResId,
&reslen, &dwFileOffset );
break;
}
if ( !retv )
{
LZClose( lzfd );
return 0;
}
}
LZSeek( lzfd, dwFileOffset, SEEK_SET );
reslen = LZRead( lzfd, lpvData, min( reslen, dwResLen ) );
LZClose( lzfd );
return reslen;
}