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wine/loader/ne/resource.c
Mike McCormack f5d21eb2bf Don't cache file handles for NE executable modules so that we don't 
lock the CDROM.
2002-08-27 02:05:21 +00:00

566 lines
17 KiB
C
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/*
* NE resource functions
*
* Copyright 1993 Robert J. Amstadt
* Copyright 1995 Alexandre Julliard
* Copyright 1997 Alex Korobka
*
* 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 "wine/port.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "windef.h"
#include "wine/winbase16.h"
#include "wine/library.h"
#include "module.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(resource);
#define NEXT_TYPEINFO(pTypeInfo) ((NE_TYPEINFO *)((char*)((pTypeInfo) + 1) + \
(pTypeInfo)->count * sizeof(NE_NAMEINFO)))
static FARPROC16 DefResourceHandlerProc = (FARPROC16)0xffffffff;
/* already defined in segment.c glue code */
extern WORD CALLBACK NE_CallTo16_word_www(FARPROC16,WORD,WORD,WORD);
/***********************************************************************
* NE_FindNameTableId
*
* Find the type and resource id from their names.
* Return value is MAKELONG( typeId, resId ), or 0 if not found.
*/
static DWORD NE_FindNameTableId( NE_MODULE *pModule, LPCSTR typeId, LPCSTR resId )
{
NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
NE_NAMEINFO *pNameInfo;
HGLOBAL16 handle;
WORD *p;
DWORD ret = 0;
int count;
for (; pTypeInfo->type_id != 0;
pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo+1) +
pTypeInfo->count * sizeof(NE_NAMEINFO)))
{
if (pTypeInfo->type_id != 0x800f) continue;
pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
{
TRACE("NameTable entry: type=%04x id=%04x\n",
pTypeInfo->type_id, pNameInfo->id );
handle = LoadResource16( pModule->self,
(HRSRC16)((int)pNameInfo - (int)pModule) );
for(p = (WORD*)LockResource16(handle); p && *p; p = (WORD *)((char*)p+*p))
{
TRACE(" type=%04x '%s' id=%04x '%s'\n",
p[1], (char *)(p+3), p[2],
(char *)(p+3)+strlen((char *)(p+3))+1 );
/* Check for correct type */
if (p[1] & 0x8000)
{
if (!HIWORD(typeId)) continue;
if (strcasecmp( typeId, (char *)(p + 3) )) continue;
}
else if (HIWORD(typeId) || (((DWORD)typeId & ~0x8000)!= p[1]))
continue;
/* Now check for the id */
if (p[2] & 0x8000)
{
if (!HIWORD(resId)) continue;
if (strcasecmp( resId, (char*)(p+3)+strlen((char*)(p+3))+1 )) continue;
}
else if (HIWORD(resId) || (((DWORD)resId & ~0x8000) != p[2]))
continue;
/* If we get here, we've found the entry */
TRACE(" Found!\n" );
ret = MAKELONG( p[1], p[2] );
break;
}
FreeResource16( handle );
if (ret) return ret;
}
}
return 0;
}
/***********************************************************************
* NE_FindTypeSection
*
* Find header struct for a particular resource type.
*/
NE_TYPEINFO *NE_FindTypeSection( LPBYTE pResTab,
NE_TYPEINFO *pTypeInfo, LPCSTR typeId )
{
/* start from pTypeInfo */
if (HIWORD(typeId) != 0) /* Named type */
{
LPCSTR str = typeId;
BYTE len = strlen( str );
while (pTypeInfo->type_id)
{
if (!(pTypeInfo->type_id & 0x8000))
{
BYTE *p = pResTab + pTypeInfo->type_id;
if ((*p == len) && !strncasecmp( p+1, str, len ))
{
TRACE(" Found type '%s'\n", str );
return pTypeInfo;
}
}
TRACE(" Skipping type %04x\n", pTypeInfo->type_id );
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
}
else /* Numeric type id */
{
WORD id = LOWORD(typeId) | 0x8000;
while (pTypeInfo->type_id)
{
if (pTypeInfo->type_id == id)
{
TRACE(" Found type %04x\n", id );
return pTypeInfo;
}
TRACE(" Skipping type %04x\n", pTypeInfo->type_id );
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
}
return NULL;
}
/***********************************************************************
* NE_FindResourceFromType
*
* Find a resource once the type info structure has been found.
*/
NE_NAMEINFO *NE_FindResourceFromType( LPBYTE pResTab,
NE_TYPEINFO *pTypeInfo, LPCSTR resId )
{
BYTE *p;
int count;
NE_NAMEINFO *pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
if (HIWORD(resId) != 0) /* Named resource */
{
LPCSTR str = resId;
BYTE len = strlen( str );
for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
{
if (pNameInfo->id & 0x8000) continue;
p = pResTab + pNameInfo->id;
if ((*p == len) && !strncasecmp( p+1, str, len ))
return pNameInfo;
}
}
else /* Numeric resource id */
{
WORD id = LOWORD(resId) | 0x8000;
for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
if (pNameInfo->id == id)
return pNameInfo;
}
return NULL;
}
/***********************************************************************
* DefResourceHandler (KERNEL.456)
*
* This is the default LoadProc() function.
*/
HGLOBAL16 WINAPI NE_DefResourceHandler( HGLOBAL16 hMemObj, HMODULE16 hModule,
HRSRC16 hRsrc )
{
HANDLE fd;
NE_MODULE* pModule = NE_GetPtr( hModule );
if (pModule && (pModule->flags & NE_FFLAGS_BUILTIN))
{
HGLOBAL16 handle;
WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
if ( hMemObj )
handle = GlobalReAlloc16( hMemObj, pNameInfo->length << sizeShift, 0 );
else
handle = AllocResource16( hModule, hRsrc, 0 );
if ( handle )
{
/* NOTE: hRsrcMap points to start of built-in resource data */
memcpy( GlobalLock16( handle ),
(char *)pModule->hRsrcMap + (pNameInfo->offset << sizeShift),
pNameInfo->length << sizeShift );
}
return handle;
}
if (pModule && (fd = NE_OpenFile( pModule )) != INVALID_HANDLE_VALUE)
{
HGLOBAL16 handle;
WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
TRACE("loading, pos=%d, len=%d\n",
(int)pNameInfo->offset << sizeShift,
(int)pNameInfo->length << sizeShift );
if( hMemObj )
handle = GlobalReAlloc16( hMemObj, pNameInfo->length << sizeShift, 0 );
else
handle = AllocResource16( hModule, hRsrc, 0 );
if( handle )
{
DWORD res;
SetFilePointer( fd, (int)pNameInfo->offset << sizeShift, NULL, SEEK_SET );
ReadFile( fd, GlobalLock16( handle ), (int)pNameInfo->length << sizeShift,
&res, NULL );
}
CloseHandle(fd);
return handle;
}
return (HGLOBAL16)0;
}
/***********************************************************************
* NE_InitResourceHandler
*
* Fill in 'resloader' fields in the resource table.
*/
BOOL NE_InitResourceHandler( HMODULE16 hModule )
{
NE_MODULE *pModule = NE_GetPtr( hModule );
NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
if ( DefResourceHandlerProc == (FARPROC16)0xffffffff )
{
HMODULE16 hModule = GetModuleHandle16( "KERNEL" );
int ordinal = hModule? NE_GetOrdinal( hModule, "DefResourceHandler" ) : 0;
if ( ordinal )
DefResourceHandlerProc = NE_GetEntryPointEx( hModule, ordinal, FALSE );
else
DefResourceHandlerProc = NULL;
}
TRACE("InitResourceHandler[%04x]\n", hModule );
while(pTypeInfo->type_id)
{
memcpy( &pTypeInfo->resloader, &DefResourceHandlerProc, sizeof(FARPROC16) );
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
return TRUE;
}
/**********************************************************************
* SetResourceHandler (KERNEL.67)
*/
FARPROC16 WINAPI SetResourceHandler16( HMODULE16 hModule, LPCSTR typeId,
FARPROC16 resourceHandler )
{
FARPROC16 prevHandler = NULL;
NE_MODULE *pModule = NE_GetPtr( hModule );
LPBYTE pResTab = (LPBYTE)pModule + pModule->res_table;
NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)(pResTab + 2);
if (!pModule || !pModule->res_table) return NULL;
TRACE("module=%04x type=%s\n", hModule, debugstr_a(typeId) );
for (;;)
{
if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, typeId )))
break;
memcpy( &prevHandler, &pTypeInfo->resloader, sizeof(FARPROC16) );
memcpy( &pTypeInfo->resloader, &resourceHandler, sizeof(FARPROC16) );
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
return prevHandler;
}
/**********************************************************************
* NE_FindResource
*/
HRSRC NE_FindResource( NE_MODULE *pModule, LPCSTR name, LPCSTR type )
{
NE_TYPEINFO *pTypeInfo;
NE_NAMEINFO *pNameInfo;
LPBYTE pResTab;
if (!pModule || !pModule->res_table) return 0;
TRACE("module=%04x name=%s type=%s\n", pModule->self, debugstr_a(name), debugstr_a(type) );
if (HIWORD(name)) /* Check for '#xxx' name */
{
LPCSTR ptr = name;
if (ptr[0] == '#')
if (!(name = (LPCSTR)atoi( ptr + 1 )))
{
WARN("Incorrect resource name: %s\n", ptr);
return 0;
}
}
if (HIWORD(type)) /* Check for '#xxx' type */
{
LPCSTR ptr = type;
if (ptr[0] == '#')
if (!(type = (LPCSTR)atoi( ptr + 1 )))
{
WARN("Incorrect resource type: %s\n", ptr);
return 0;
}
}
if (HIWORD(type) || HIWORD(name))
{
DWORD id = NE_FindNameTableId( pModule, type, name );
if (id) /* found */
{
type = (LPCSTR)(int)LOWORD(id);
name = (LPCSTR)(int)HIWORD(id);
}
}
pResTab = (LPBYTE)pModule + pModule->res_table;
pTypeInfo = (NE_TYPEINFO *)( pResTab + 2 );
for (;;)
{
if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, type )))
break;
if ((pNameInfo = NE_FindResourceFromType( pResTab, pTypeInfo, name )))
{
TRACE(" Found id %08lx\n", (DWORD)name );
return (HRSRC)( (char *)pNameInfo - (char *)pModule );
}
TRACE(" Not found, going on\n" );
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
WARN("failed!\n");
return 0;
}
/**********************************************************************
* AllocResource (KERNEL.66)
*/
HGLOBAL16 WINAPI AllocResource16( HMODULE16 hModule, HRSRC16 hRsrc, DWORD size)
{
NE_NAMEINFO *pNameInfo=NULL;
WORD sizeShift;
HGLOBAL16 ret;
NE_MODULE *pModule = NE_GetPtr( hModule );
if (!pModule || !pModule->res_table || !hRsrc) return 0;
TRACE("module=%04x res=%04x size=%ld\n", hModule, hRsrc, size );
sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
if (size < (DWORD)pNameInfo->length << sizeShift)
size = (DWORD)pNameInfo->length << sizeShift;
ret = GlobalAlloc16( GMEM_FIXED, size );
if (ret) FarSetOwner16( ret, hModule );
return ret;
}
/**********************************************************************
* DirectResAlloc (KERNEL.168)
*
* Check Schulman, p. 232 for details
*/
HGLOBAL16 WINAPI DirectResAlloc16( HINSTANCE16 hInstance, WORD wType,
UINT16 wSize )
{
HGLOBAL16 ret;
TRACE("(%04x,%04x,%04x)\n", hInstance, wType, wSize );
if (!(hInstance = GetExePtr( hInstance ))) return 0;
if(wType != 0x10) /* 0x10 is the only observed value, passed from
CreateCursorIndirect. */
TRACE("(wType=%x)\n", wType);
ret = GlobalAlloc16( GMEM_MOVEABLE, wSize );
if (ret) FarSetOwner16( ret, hInstance );
return ret;
}
/**********************************************************************
* AccessResource (KERNEL.64)
*/
INT16 WINAPI AccessResource16( HINSTANCE16 hModule, HRSRC16 hRsrc )
{
HFILE16 fd;
NE_MODULE *pModule = NE_GetPtr( hModule );
if (!pModule || !pModule->res_table || !hRsrc) return -1;
TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
if ((fd = _lopen16( NE_MODULE_NAME(pModule), OF_READ )) != HFILE_ERROR16)
{
WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
NE_NAMEINFO *pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
_llseek16( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
}
return fd;
}
/**********************************************************************
* NE_SizeofResource
*/
DWORD NE_SizeofResource( NE_MODULE *pModule, HRSRC hRsrc )
{
NE_NAMEINFO *pNameInfo=NULL;
WORD sizeShift;
if (!pModule || !pModule->res_table) return 0;
TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
pNameInfo = (NE_NAMEINFO*)((char*)pModule + LOWORD(hRsrc));
return (DWORD)pNameInfo->length << sizeShift;
}
/**********************************************************************
* NE_LoadResource
*/
HGLOBAL16 NE_LoadResource( NE_MODULE *pModule, HRSRC16 hRsrc )
{
NE_TYPEINFO *pTypeInfo;
NE_NAMEINFO *pNameInfo = NULL;
int d;
TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
if (!hRsrc || !pModule || !pModule->res_table) return 0;
/* First, verify hRsrc (just an offset from pModule to the needed pNameInfo) */
d = pModule->res_table + 2;
pTypeInfo = (NE_TYPEINFO *)((char *)pModule + d);
while( hRsrc > d )
{
if (pTypeInfo->type_id == 0)
break; /* terminal entry */
d += sizeof(NE_TYPEINFO) + pTypeInfo->count * sizeof(NE_NAMEINFO);
if (hRsrc < d)
{
if( ((d - hRsrc)%sizeof(NE_NAMEINFO)) == 0 )
{
pNameInfo = (NE_NAMEINFO *)(((char *)pModule) + hRsrc);
break;
}
else
break; /* NE_NAMEINFO boundary mismatch */
}
pTypeInfo = (NE_TYPEINFO *)(((char *)pModule) + d);
}
if (pNameInfo)
{
if (pNameInfo->handle
&& !(GlobalFlags16(pNameInfo->handle) & GMEM_DISCARDED))
{
pNameInfo->usage++;
TRACE(" Already loaded, new count=%d\n",
pNameInfo->usage );
}
else
{
FARPROC16 resloader;
memcpy( &resloader, &pTypeInfo->resloader, sizeof(FARPROC16) );
if ( resloader && resloader != DefResourceHandlerProc )
pNameInfo->handle = NE_CallTo16_word_www(
resloader, pNameInfo->handle, pModule->self, hRsrc );
else
pNameInfo->handle = NE_DefResourceHandler(
pNameInfo->handle, pModule->self, hRsrc );
if (pNameInfo->handle)
{
pNameInfo->usage++;
pNameInfo->flags |= NE_SEGFLAGS_LOADED;
}
}
return pNameInfo->handle;
}
return 0;
}
/**********************************************************************
* NE_FreeResource
*/
BOOL16 NE_FreeResource( NE_MODULE *pModule, HGLOBAL16 handle )
{
NE_TYPEINFO *pTypeInfo;
NE_NAMEINFO *pNameInfo;
WORD count;
if (!handle || !pModule || !pModule->res_table) return handle;
TRACE("handle=%04x\n", handle );
pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
while (pTypeInfo->type_id)
{
pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
for (count = pTypeInfo->count; count > 0; count--)
{
if (pNameInfo->handle == handle)
{
if (pNameInfo->usage > 0) pNameInfo->usage--;
if (pNameInfo->usage == 0)
{
GlobalFree16( pNameInfo->handle );
pNameInfo->handle = 0;
pNameInfo->flags &= ~NE_SEGFLAGS_LOADED;
}
return 0;
}
pNameInfo++;
}
pTypeInfo = (NE_TYPEINFO *)pNameInfo;
}
return handle;
}
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