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Sweden-Number/dlls/ntdll/resource.c

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/*
* PE file resources
*
* Copyright 1995 Thomas Sandford
* Copyright 1996 Martin von Loewis
* Copyright 2003 Alexandre Julliard
*
* Based on the Win16 resource handling code in loader/resource.c
* Copyright 1993 Robert J. Amstadt
* Copyright 1995 Alexandre Julliard
* Copyright 1997 Marcus Meissner
*
* 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 <sys/types.h>
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winnt.h"
#include "winternl.h"
#include "winerror.h"
#include "thread.h"
#include "excpt.h"
#include "wine/exception.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(resource);
static LCID user_lcid, system_lcid;
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
/**********************************************************************
* is_data_file_module
*
* Check if a module handle is for a LOAD_LIBRARY_AS_DATAFILE module.
*/
inline static int is_data_file_module( HMODULE hmod )
{
return (ULONG_PTR)hmod & 1;
}
/**********************************************************************
* push_language
*
* push a language in the list of languages to try
*/
static inline int push_language( WORD *list, int pos, WORD lang )
{
int i;
for (i = 0; i < pos; i++) if (list[i] == lang) return pos;
list[pos++] = lang;
return pos;
}
/**********************************************************************
* find_first_entry
*
* Find the first suitable entry in a resource directory
*/
static const IMAGE_RESOURCE_DIRECTORY *find_first_entry( const IMAGE_RESOURCE_DIRECTORY *dir,
const void *root, int want_dir )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
int pos;
for (pos = 0; pos < dir->NumberOfNamedEntries + dir->NumberOfIdEntries; pos++)
{
if (!entry[pos].u2.s3.DataIsDirectory == !want_dir)
return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
}
return NULL;
}
/**********************************************************************
* find_entry_by_id
*
* Find an entry by id in a resource directory
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
WORD id, const void *root, int want_dir )
{
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)
{
if (!entry[pos].u2.s3.DataIsDirectory == !want_dir)
{
TRACE("root %p dir %p id %04x ret %p\n",
root, dir, id, (char *)root + entry[pos].u2.s3.OffsetToDirectory);
return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
}
break;
}
if (entry[pos].u1.s2.Id > id) max = pos - 1;
else min = pos + 1;
}
TRACE("root %p dir %p id %04x not found\n", root, dir, id );
return NULL;
}
/**********************************************************************
* find_entry_by_name
*
* Find an entry by name in a resource directory
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_name( const IMAGE_RESOURCE_DIRECTORY *dir,
LPCWSTR name, const void *root,
int want_dir )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
const IMAGE_RESOURCE_DIR_STRING_U *str;
int min, max, res, pos, namelen;
if (!HIWORD(name)) return find_entry_by_id( dir, LOWORD(name), root, want_dir );
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
namelen = strlenW(name);
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 = strncmpW( name, str->NameString, str->Length );
if (!res && namelen == str->Length)
{
if (!entry[pos].u2.s3.DataIsDirectory == !want_dir)
{
TRACE("root %p dir %p name %s ret %p\n",
root, dir, debugstr_w(name), (char *)root + entry[pos].u2.s3.OffsetToDirectory);
return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
}
break;
}
if (res < 0) max = pos - 1;
else min = pos + 1;
}
TRACE("root %p dir %p name %s not found\n", root, dir, debugstr_w(name) );
return NULL;
}
/**********************************************************************
* find_entry
*
* Find a resource entry
*/
static NTSTATUS find_entry( HMODULE hmod, const LDR_RESOURCE_INFO *info,
ULONG level, const void **ret, int want_dir )
{
ULONG size;
const void *root;
const IMAGE_RESOURCE_DIRECTORY *resdirptr;
WORD list[9]; /* list of languages to try */
int i, pos = 0;
root = RtlImageDirectoryEntryToData( hmod, TRUE, IMAGE_DIRECTORY_ENTRY_RESOURCE, &size );
if (!root) return STATUS_RESOURCE_DATA_NOT_FOUND;
resdirptr = root;
if (!level--) goto done;
if (!(*ret = find_entry_by_name( resdirptr, (LPCWSTR)info->Type, root, want_dir || level )))
return STATUS_RESOURCE_TYPE_NOT_FOUND;
if (!level--) return STATUS_SUCCESS;
resdirptr = *ret;
if (!(*ret = find_entry_by_name( resdirptr, (LPCWSTR)info->Name, root, want_dir || level )))
return STATUS_RESOURCE_NAME_NOT_FOUND;
if (!level--) return STATUS_SUCCESS;
if (level) return STATUS_INVALID_PARAMETER; /* level > 3 */
/* 1. specified language */
pos = push_language( list, pos, info->Language );
/* 2. specified language with neutral sublanguage */
pos = push_language( list, pos, MAKELANGID( PRIMARYLANGID(info->Language), SUBLANG_NEUTRAL ) );
/* 3. neutral language with neutral sublanguage */
pos = push_language( list, pos, MAKELANGID( LANG_NEUTRAL, SUBLANG_NEUTRAL ) );
/* if no explicitly specified language, try some defaults */
if (PRIMARYLANGID(info->Language) == LANG_NEUTRAL)
{
/* user defaults, unless SYS_DEFAULT sublanguage specified */
if (SUBLANGID(info->Language) != SUBLANG_SYS_DEFAULT)
{
/* 4. current thread locale language */
pos = push_language( list, pos, LANGIDFROMLCID(NtCurrentTeb()->CurrentLocale) );
/* 5. user locale language */
pos = push_language( list, pos, LANGIDFROMLCID(user_lcid) );
/* 6. user locale language with neutral sublanguage */
pos = push_language( list, pos, MAKELANGID( PRIMARYLANGID(user_lcid), SUBLANG_NEUTRAL ) );
}
/* now system defaults */
/* 7. system locale language */
pos = push_language( list, pos, LANGIDFROMLCID( system_lcid ) );
/* 8. system locale language with neutral sublanguage */
pos = push_language( list, pos, MAKELANGID( PRIMARYLANGID(system_lcid), SUBLANG_NEUTRAL ) );
/* 9. English */
pos = push_language( list, pos, MAKELANGID( LANG_ENGLISH, SUBLANG_DEFAULT ) );
}
resdirptr = *ret;
for (i = 0; i < pos; i++)
if ((*ret = find_entry_by_id( resdirptr, list[i], root, want_dir ))) return STATUS_SUCCESS;
/* if no explicitly specified language, return the first entry */
if (PRIMARYLANGID(info->Language) == LANG_NEUTRAL)
{
if ((*ret = find_first_entry( resdirptr, root, want_dir ))) return STATUS_SUCCESS;
}
return STATUS_RESOURCE_LANG_NOT_FOUND;
done:
*ret = resdirptr;
return STATUS_SUCCESS;
}
/**********************************************************************
* LdrFindResourceDirectory_U (NTDLL.@)
*/
NTSTATUS WINAPI LdrFindResourceDirectory_U( HMODULE hmod, const LDR_RESOURCE_INFO *info,
ULONG level, const IMAGE_RESOURCE_DIRECTORY **dir )
{
const void *res;
NTSTATUS status;
if (info) TRACE( "module %p type %s name %s lang %04lx level %ld\n",
hmod, debugstr_w((LPCWSTR)info->Type),
debugstr_w((LPCWSTR)info->Name), info->Language, level );
__TRY
{
status = find_entry( hmod, info, level, &res, TRUE );
if (status == STATUS_SUCCESS) *dir = res;
}
__EXCEPT(page_fault)
{
return GetExceptionCode();
}
__ENDTRY;
return status;
}
/**********************************************************************
* LdrFindResource_U (NTDLL.@)
*/
NTSTATUS WINAPI LdrFindResource_U( HMODULE hmod, const LDR_RESOURCE_INFO *info,
ULONG level, const IMAGE_RESOURCE_DATA_ENTRY **entry )
{
const void *res;
NTSTATUS status;
if (info) TRACE( "module %p type %s name %s lang %04lx level %ld\n",
hmod, debugstr_w((LPCWSTR)info->Type),
debugstr_w((LPCWSTR)info->Name), info->Language, level );
__TRY
{
status = find_entry( hmod, info, level, &res, FALSE );
if (status == STATUS_SUCCESS) *entry = res;
}
__EXCEPT(page_fault)
{
return GetExceptionCode();
}
__ENDTRY;
return status;
}
/**********************************************************************
* LdrAccessResource (NTDLL.@)
*/
NTSTATUS WINAPI LdrAccessResource( HMODULE hmod, const IMAGE_RESOURCE_DATA_ENTRY *entry,
void **ptr, ULONG *size )
{
NTSTATUS status;
__TRY
{
ULONG dirsize;
if (!RtlImageDirectoryEntryToData( hmod, TRUE, IMAGE_DIRECTORY_ENTRY_RESOURCE, &dirsize ))
status = STATUS_RESOURCE_DATA_NOT_FOUND;
else
{
if (ptr)
{
if (is_data_file_module(hmod))
{
HMODULE mod = (HMODULE)((ULONG_PTR)hmod & ~1);
*ptr = RtlImageRvaToVa( RtlImageNtHeader(mod), mod, entry->OffsetToData, NULL );
}
else *ptr = (char *)hmod + entry->OffsetToData;
}
if (size) *size = entry->Size;
status = STATUS_SUCCESS;
}
}
__EXCEPT(page_fault)
{
return GetExceptionCode();
}
__ENDTRY;
return status;
}
/**********************************************************************
* RtlFindMessage (NTDLL.@)
*/
NTSTATUS WINAPI RtlFindMessage( HMODULE hmod, ULONG type, ULONG lang,
ULONG msg_id, const MESSAGE_RESOURCE_ENTRY **ret )
{
const MESSAGE_RESOURCE_DATA *data;
const MESSAGE_RESOURCE_BLOCK *block;
const IMAGE_RESOURCE_DATA_ENTRY *rsrc;
LDR_RESOURCE_INFO info;
NTSTATUS status;
void *ptr;
int i;
info.Type = type;
info.Name = 1;
info.Language = lang;
if ((status = LdrFindResource_U( hmod, &info, 3, &rsrc )) != STATUS_SUCCESS)
return status;
if ((status = LdrAccessResource( hmod, rsrc, &ptr, NULL )) != STATUS_SUCCESS)
return status;
data = ptr;
block = data->Blocks;
for (i = 0; i < data->NumberOfBlocks; i++, block++)
{
if (msg_id >= block->LowId && msg_id <= block->HighId)
{
const MESSAGE_RESOURCE_ENTRY *entry;
entry = (MESSAGE_RESOURCE_ENTRY *)((char *)data + block->OffsetToEntries);
for (i = msg_id - block->LowId; i > 0; i--)
entry = (MESSAGE_RESOURCE_ENTRY *)((char *)entry + entry->Length);
*ret = entry;
return STATUS_SUCCESS;
}
}
return STATUS_MESSAGE_NOT_FOUND;
}
/**********************************************************************
* NtQueryDefaultLocale (NTDLL.@)
*/
NTSTATUS WINAPI NtQueryDefaultLocale( BOOLEAN user, LCID *lcid )
{
*lcid = user ? user_lcid : system_lcid;
return STATUS_SUCCESS;
}
/**********************************************************************
* NtSetDefaultLocale (NTDLL.@)
*/
NTSTATUS WINAPI NtSetDefaultLocale( BOOLEAN user, LCID lcid )
{
if (user) user_lcid = lcid;
else system_lcid = lcid;
return STATUS_SUCCESS;
}
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