Sweden-Number/loader/ne/resource.c

512 lines
15 KiB
C

/*
* NE resource functions
*
* Copyright 1993 Robert J. Amstadt
* Copyright 1995 Alexandre Julliard
* Copyright 1997 Alex Korobka
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "windows.h"
#include "global.h"
#include "ldt.h"
#include "module.h"
#include "neexe.h"
#include "resource.h"
#include "callback.h"
#include "debug.h"
#define NEXT_TYPEINFO(pTypeInfo) ((NE_TYPEINFO *)((char*)((pTypeInfo) + 1) + \
(pTypeInfo)->count * sizeof(NE_NAMEINFO)))
/***********************************************************************
* 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(resource, "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(resource," 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 (lstrcmpi32A( 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 (lstrcmpi32A( 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(resource, " 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.
*/
static NE_TYPEINFO* NE_FindTypeSection( NE_MODULE *pModule,
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 = (BYTE*)pModule + pModule->res_table + pTypeInfo->type_id;
if ((*p == len) && !lstrncmpi32A( p+1, str, len ))
{
TRACE(resource, " Found type '%s'\n", str );
return pTypeInfo;
}
}
TRACE(resource, " 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(resource, " Found type %04x\n", id );
return pTypeInfo;
}
TRACE(resource, " 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.
*/
static HRSRC16 NE_FindResourceFromType( NE_MODULE *pModule,
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 = (BYTE *)pModule + pModule->res_table + pNameInfo->id;
if ((*p == len) && !lstrncmpi32A( p+1, str, len ))
return (HRSRC16)((int)pNameInfo - (int)pModule);
}
}
else /* Numeric resource id */
{
WORD id = LOWORD(resId) | 0x8000;
for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
if (pNameInfo->id == id)
return (HRSRC16)((int)pNameInfo - (int)pModule);
}
return 0;
}
/***********************************************************************
* NE_DefResourceHandler
*
* This is the default LoadProc() function.
*/
HGLOBAL16 WINAPI NE_DefResourceHandler( HGLOBAL16 hMemObj, HMODULE16 hModule,
HRSRC16 hRsrc )
{
int fd;
NE_MODULE* pModule = NE_GetPtr( hModule );
if (pModule && (fd = NE_OpenFile( pModule )) >= 0)
{
HGLOBAL16 handle;
WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
TRACE(resource, "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 = AllocResource( hModule, hRsrc, 0 );
if( handle )
{
lseek( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
read( fd, GlobalLock16( handle ), (int)pNameInfo->length << sizeShift );
}
return handle;
}
return (HGLOBAL16)0;
}
/***********************************************************************
* NE_InitResourceHandler
*
* Fill in 'resloader' fields in the resource table.
*/
BOOL32 NE_InitResourceHandler( HMODULE16 hModule )
{
NE_MODULE *pModule = NE_GetPtr( hModule );
NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
FARPROC16 handler = MODULE_GetWndProcEntry16("DefResourceHandler");
TRACE(resource,"InitResourceHandler[%04x]\n", hModule );
while(pTypeInfo->type_id)
{
pTypeInfo->resloader = handler;
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
return TRUE;
}
/**********************************************************************
* SetResourceHandler (KERNEL.43)
*/
FARPROC16 WINAPI SetResourceHandler( HMODULE16 hModule, SEGPTR typeId,
FARPROC16 resourceHandler )
{
FARPROC16 prevHandler = NULL;
NE_MODULE *pModule = NE_GetPtr( hModule );
NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
if (!pModule || !pModule->res_table) return NULL;
TRACE( resource, "module=%04x type=%s\n",
hModule, debugres_a(PTR_SEG_TO_LIN(typeId)) );
for (;;)
{
if (!(pTypeInfo = NE_FindTypeSection( pModule, pTypeInfo, PTR_SEG_TO_LIN(typeId) )))
break;
prevHandler = pTypeInfo->resloader;
pTypeInfo->resloader = resourceHandler;
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
return prevHandler;
}
/**********************************************************************
* NE_FindResource
*/
HRSRC16 NE_FindResource( NE_MODULE *pModule, LPCSTR name, LPCSTR type )
{
NE_TYPEINFO *pTypeInfo;
HRSRC16 hRsrc;
if (!pModule || !pModule->res_table) return 0;
TRACE( resource, "module=%04x name=%s type=%s\n",
pModule->self, debugres_a(PTR_SEG_TO_LIN(name)),
debugres_a(PTR_SEG_TO_LIN(type)) );
if (HIWORD(name)) /* Check for '#xxx' name */
{
LPCSTR ptr = name;
if (ptr[0] == '#')
if (!(name = (LPCSTR)atoi( ptr + 1 )))
{
WARN(resource, "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(resource, "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);
}
}
pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
for (;;)
{
if (!(pTypeInfo = NE_FindTypeSection( pModule, pTypeInfo, type )))
break;
if ((hRsrc = NE_FindResourceFromType(pModule, pTypeInfo, name)))
{
TRACE(resource, " Found id %08lx\n", (DWORD)name );
return hRsrc;
}
TRACE(resource, " Not found, going on\n" );
pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
}
WARN(resource, "failed!\n");
return 0;
}
/**********************************************************************
* AllocResource (KERNEL.66)
*/
HGLOBAL16 WINAPI AllocResource( HMODULE16 hModule, HRSRC16 hRsrc, DWORD size)
{
NE_NAMEINFO *pNameInfo=NULL;
WORD sizeShift;
NE_MODULE *pModule = NE_GetPtr( hModule );
if (!pModule || !pModule->res_table || !hRsrc) return 0;
TRACE( resource, "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;
return GLOBAL_Alloc( GMEM_FIXED, size, hModule, FALSE, FALSE, FALSE );
}
/**********************************************************************
* DirectResAlloc (KERNEL.168)
*
* Check Schulman, p. 232 for details
*/
HGLOBAL16 WINAPI DirectResAlloc( HINSTANCE16 hInstance, WORD wType,
UINT16 wSize )
{
TRACE(resource,"(%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(resource, "(wType=%x)\n", wType);
return GLOBAL_Alloc(GMEM_MOVEABLE, wSize, hInstance, FALSE, FALSE, FALSE);
}
/**********************************************************************
* NE_AccessResource
*/
INT16 NE_AccessResource( NE_MODULE *pModule, HRSRC16 hRsrc )
{
HFILE16 fd;
if (!pModule || !pModule->res_table || !hRsrc) return -1;
TRACE(resource, "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, HRSRC16 hRsrc )
{
NE_NAMEINFO *pNameInfo=NULL;
WORD sizeShift;
if (!pModule || !pModule->res_table) return 0;
TRACE(resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
pNameInfo = (NE_NAMEINFO*)((char*)pModule + 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( resource, "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(resource, " Already loaded, new count=%d\n",
pNameInfo->usage );
}
else
{
if (pTypeInfo->resloader)
pNameInfo->handle = Callbacks->CallResourceHandlerProc(
pTypeInfo->resloader, pNameInfo->handle, pModule->self, hRsrc );
else /* this is really bad */
{
ERR(resource, "[%04x]: Missing resource handler!\n", pModule->self);
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(resource, "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;
}
TRACE(resource, "[%04x]: no intrinsic resource for %04x, assuming DirectResAlloc()!\n",
pModule->self, handle );
GlobalFree16( handle );
return handle;
}