512 lines
15 KiB
C
512 lines
15 KiB
C
/*
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* NE resource functions
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*
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* Copyright 1993 Robert J. Amstadt
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* Copyright 1995 Alexandre Julliard
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* Copyright 1997 Alex Korobka
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "windows.h"
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#include "global.h"
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#include "ldt.h"
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#include "module.h"
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#include "neexe.h"
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#include "resource.h"
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#include "callback.h"
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#include "debug.h"
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#define NEXT_TYPEINFO(pTypeInfo) ((NE_TYPEINFO *)((char*)((pTypeInfo) + 1) + \
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(pTypeInfo)->count * sizeof(NE_NAMEINFO)))
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/***********************************************************************
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* NE_FindNameTableId
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*
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* Find the type and resource id from their names.
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* Return value is MAKELONG( typeId, resId ), or 0 if not found.
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*/
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static DWORD NE_FindNameTableId( NE_MODULE *pModule, LPCSTR typeId, LPCSTR resId )
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{
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NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
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NE_NAMEINFO *pNameInfo;
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HGLOBAL16 handle;
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WORD *p;
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DWORD ret = 0;
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int count;
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for (; pTypeInfo->type_id != 0;
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pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo+1) +
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pTypeInfo->count * sizeof(NE_NAMEINFO)))
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{
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if (pTypeInfo->type_id != 0x800f) continue;
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pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
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for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
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{
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TRACE(resource, "NameTable entry: type=%04x id=%04x\n",
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pTypeInfo->type_id, pNameInfo->id );
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handle = LoadResource16( pModule->self,
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(HRSRC16)((int)pNameInfo - (int)pModule) );
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for(p = (WORD*)LockResource16(handle); p && *p; p = (WORD *)((char*)p+*p))
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{
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TRACE(resource," type=%04x '%s' id=%04x '%s'\n",
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p[1], (char *)(p+3), p[2],
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(char *)(p+3)+strlen((char *)(p+3))+1 );
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/* Check for correct type */
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if (p[1] & 0x8000)
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{
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if (!HIWORD(typeId)) continue;
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if (lstrcmpi32A( typeId,
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(char *)(p + 3) )) continue;
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}
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else if (HIWORD(typeId) || (((DWORD)typeId & ~0x8000)!= p[1]))
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continue;
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/* Now check for the id */
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if (p[2] & 0x8000)
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{
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if (!HIWORD(resId)) continue;
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if (lstrcmpi32A( resId,
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(char*)(p+3)+strlen((char*)(p+3))+1 )) continue;
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}
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else if (HIWORD(resId) || (((DWORD)resId & ~0x8000) != p[2]))
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continue;
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/* If we get here, we've found the entry */
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TRACE(resource, " Found!\n" );
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ret = MAKELONG( p[1], p[2] );
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break;
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}
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FreeResource16( handle );
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if (ret) return ret;
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}
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}
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return 0;
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}
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/***********************************************************************
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* NE_FindTypeSection
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*
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* Find header struct for a particular resource type.
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*/
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static NE_TYPEINFO* NE_FindTypeSection( NE_MODULE *pModule,
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NE_TYPEINFO *pTypeInfo, LPCSTR typeId )
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{
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/* start from pTypeInfo */
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if (HIWORD(typeId) != 0) /* Named type */
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{
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LPCSTR str = typeId;
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BYTE len = strlen( str );
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while (pTypeInfo->type_id)
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{
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if (!(pTypeInfo->type_id & 0x8000))
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{
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BYTE *p = (BYTE*)pModule + pModule->res_table + pTypeInfo->type_id;
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if ((*p == len) && !lstrncmpi32A( p+1, str, len ))
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{
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TRACE(resource, " Found type '%s'\n", str );
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return pTypeInfo;
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}
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}
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TRACE(resource, " Skipping type %04x\n", pTypeInfo->type_id );
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pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
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}
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}
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else /* Numeric type id */
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{
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WORD id = LOWORD(typeId) | 0x8000;
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while (pTypeInfo->type_id)
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{
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if (pTypeInfo->type_id == id)
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{
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TRACE(resource, " Found type %04x\n", id );
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return pTypeInfo;
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}
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TRACE(resource, " Skipping type %04x\n", pTypeInfo->type_id );
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pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
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}
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}
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return NULL;
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}
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/***********************************************************************
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* NE_FindResourceFromType
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*
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* Find a resource once the type info structure has been found.
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*/
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static HRSRC16 NE_FindResourceFromType( NE_MODULE *pModule,
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NE_TYPEINFO *pTypeInfo, LPCSTR resId )
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{
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BYTE *p;
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int count;
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NE_NAMEINFO *pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
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if (HIWORD(resId) != 0) /* Named resource */
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{
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LPCSTR str = resId;
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BYTE len = strlen( str );
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for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
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{
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if (pNameInfo->id & 0x8000) continue;
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p = (BYTE *)pModule + pModule->res_table + pNameInfo->id;
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if ((*p == len) && !lstrncmpi32A( p+1, str, len ))
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return (HRSRC16)((int)pNameInfo - (int)pModule);
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}
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}
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else /* Numeric resource id */
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{
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WORD id = LOWORD(resId) | 0x8000;
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for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
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if (pNameInfo->id == id)
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return (HRSRC16)((int)pNameInfo - (int)pModule);
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}
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return 0;
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}
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/***********************************************************************
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* NE_DefResourceHandler
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*
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* This is the default LoadProc() function.
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*/
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HGLOBAL16 WINAPI NE_DefResourceHandler( HGLOBAL16 hMemObj, HMODULE16 hModule,
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HRSRC16 hRsrc )
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{
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int fd;
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NE_MODULE* pModule = NE_GetPtr( hModule );
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if (pModule && (fd = NE_OpenFile( pModule )) >= 0)
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{
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HGLOBAL16 handle;
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WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
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NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
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TRACE(resource, "loading, pos=%d, len=%d\n",
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(int)pNameInfo->offset << sizeShift,
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(int)pNameInfo->length << sizeShift );
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if( hMemObj )
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handle = GlobalReAlloc16( hMemObj, pNameInfo->length << sizeShift, 0 );
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else
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handle = AllocResource( hModule, hRsrc, 0 );
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if( handle )
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{
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lseek( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
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read( fd, GlobalLock16( handle ), (int)pNameInfo->length << sizeShift );
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}
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return handle;
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}
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return (HGLOBAL16)0;
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}
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/***********************************************************************
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* NE_InitResourceHandler
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*
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* Fill in 'resloader' fields in the resource table.
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*/
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BOOL32 NE_InitResourceHandler( HMODULE16 hModule )
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{
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NE_MODULE *pModule = NE_GetPtr( hModule );
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NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
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FARPROC16 handler = MODULE_GetWndProcEntry16("DefResourceHandler");
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TRACE(resource,"InitResourceHandler[%04x]\n", hModule );
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while(pTypeInfo->type_id)
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{
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pTypeInfo->resloader = handler;
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pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
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}
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return TRUE;
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}
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/**********************************************************************
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* SetResourceHandler (KERNEL.43)
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*/
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FARPROC16 WINAPI SetResourceHandler( HMODULE16 hModule, SEGPTR typeId,
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FARPROC16 resourceHandler )
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{
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FARPROC16 prevHandler = NULL;
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NE_MODULE *pModule = NE_GetPtr( hModule );
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NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
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if (!pModule || !pModule->res_table) return NULL;
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TRACE( resource, "module=%04x type=%s\n",
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hModule, debugres_a(PTR_SEG_TO_LIN(typeId)) );
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for (;;)
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{
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if (!(pTypeInfo = NE_FindTypeSection( pModule, pTypeInfo, PTR_SEG_TO_LIN(typeId) )))
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break;
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prevHandler = pTypeInfo->resloader;
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pTypeInfo->resloader = resourceHandler;
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pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
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}
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return prevHandler;
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}
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/**********************************************************************
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* NE_FindResource
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*/
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HRSRC16 NE_FindResource( NE_MODULE *pModule, LPCSTR name, LPCSTR type )
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{
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NE_TYPEINFO *pTypeInfo;
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HRSRC16 hRsrc;
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if (!pModule || !pModule->res_table) return 0;
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TRACE( resource, "module=%04x name=%s type=%s\n",
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pModule->self, debugres_a(PTR_SEG_TO_LIN(name)),
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debugres_a(PTR_SEG_TO_LIN(type)) );
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if (HIWORD(name)) /* Check for '#xxx' name */
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{
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LPCSTR ptr = name;
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if (ptr[0] == '#')
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if (!(name = (LPCSTR)atoi( ptr + 1 )))
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{
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WARN(resource, "Incorrect resource name: %s\n", ptr);
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return 0;
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}
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}
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if (HIWORD(type)) /* Check for '#xxx' type */
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{
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LPCSTR ptr = type;
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if (ptr[0] == '#')
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if (!(type = (LPCSTR)atoi( ptr + 1 )))
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{
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WARN(resource, "Incorrect resource type: %s\n", ptr);
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return 0;
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}
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}
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if (HIWORD(type) || HIWORD(name))
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{
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DWORD id = NE_FindNameTableId( pModule, type, name );
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if (id) /* found */
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{
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type = (LPCSTR)(int)LOWORD(id);
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name = (LPCSTR)(int)HIWORD(id);
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}
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}
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pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
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for (;;)
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{
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if (!(pTypeInfo = NE_FindTypeSection( pModule, pTypeInfo, type )))
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break;
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if ((hRsrc = NE_FindResourceFromType(pModule, pTypeInfo, name)))
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{
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TRACE(resource, " Found id %08lx\n", (DWORD)name );
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return hRsrc;
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}
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TRACE(resource, " Not found, going on\n" );
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pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
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}
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WARN(resource, "failed!\n");
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return 0;
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}
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/**********************************************************************
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* AllocResource (KERNEL.66)
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*/
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HGLOBAL16 WINAPI AllocResource( HMODULE16 hModule, HRSRC16 hRsrc, DWORD size)
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{
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NE_NAMEINFO *pNameInfo=NULL;
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WORD sizeShift;
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NE_MODULE *pModule = NE_GetPtr( hModule );
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if (!pModule || !pModule->res_table || !hRsrc) return 0;
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TRACE( resource, "module=%04x res=%04x size=%ld\n", hModule, hRsrc, size );
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sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
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pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
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if (size < (DWORD)pNameInfo->length << sizeShift)
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size = (DWORD)pNameInfo->length << sizeShift;
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return GLOBAL_Alloc( GMEM_FIXED, size, hModule, FALSE, FALSE, FALSE );
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}
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/**********************************************************************
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* DirectResAlloc (KERNEL.168)
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*
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* Check Schulman, p. 232 for details
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*/
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HGLOBAL16 WINAPI DirectResAlloc( HINSTANCE16 hInstance, WORD wType,
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UINT16 wSize )
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{
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TRACE(resource,"(%04x,%04x,%04x)\n",
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hInstance, wType, wSize );
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if (!(hInstance = GetExePtr( hInstance ))) return 0;
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if(wType != 0x10) /* 0x10 is the only observed value, passed from
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CreateCursorIndirect. */
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TRACE(resource, "(wType=%x)\n", wType);
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return GLOBAL_Alloc(GMEM_MOVEABLE, wSize, hInstance, FALSE, FALSE, FALSE);
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}
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/**********************************************************************
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* NE_AccessResource
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*/
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INT16 NE_AccessResource( NE_MODULE *pModule, HRSRC16 hRsrc )
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{
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HFILE16 fd;
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if (!pModule || !pModule->res_table || !hRsrc) return -1;
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TRACE(resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
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if ((fd = _lopen16( NE_MODULE_NAME(pModule), OF_READ )) != HFILE_ERROR16)
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{
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WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
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NE_NAMEINFO *pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
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_llseek16( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
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}
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return fd;
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}
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/**********************************************************************
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* NE_SizeofResource
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*/
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DWORD NE_SizeofResource( NE_MODULE *pModule, HRSRC16 hRsrc )
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{
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NE_NAMEINFO *pNameInfo=NULL;
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WORD sizeShift;
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if (!pModule || !pModule->res_table) return 0;
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TRACE(resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
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sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
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pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
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return (DWORD)pNameInfo->length << sizeShift;
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}
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/**********************************************************************
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* NE_LoadResource
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*/
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HGLOBAL16 NE_LoadResource( NE_MODULE *pModule, HRSRC16 hRsrc )
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{
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NE_TYPEINFO *pTypeInfo;
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NE_NAMEINFO *pNameInfo = NULL;
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int d;
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TRACE( resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
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if (!hRsrc || !pModule || !pModule->res_table) return 0;
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/* First, verify hRsrc (just an offset from pModule to the needed pNameInfo) */
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d = pModule->res_table + 2;
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pTypeInfo = (NE_TYPEINFO *)((char *)pModule + d);
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while( hRsrc > d )
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{
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if (pTypeInfo->type_id == 0)
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break; /* terminal entry */
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d += sizeof(NE_TYPEINFO) + pTypeInfo->count * sizeof(NE_NAMEINFO);
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if (hRsrc < d)
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{
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if( ((d - hRsrc)%sizeof(NE_NAMEINFO)) == 0 )
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{
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pNameInfo = (NE_NAMEINFO *)(((char *)pModule) + hRsrc);
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break;
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}
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else
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break; /* NE_NAMEINFO boundary mismatch */
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}
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pTypeInfo = (NE_TYPEINFO *)(((char *)pModule) + d);
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}
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if (pNameInfo)
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{
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if (pNameInfo->handle
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&& !(GlobalFlags16(pNameInfo->handle) & GMEM_DISCARDED))
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{
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pNameInfo->usage++;
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TRACE(resource, " Already loaded, new count=%d\n",
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pNameInfo->usage );
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}
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else
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{
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if (pTypeInfo->resloader)
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pNameInfo->handle = Callbacks->CallResourceHandlerProc(
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pTypeInfo->resloader, pNameInfo->handle, pModule->self, hRsrc );
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else /* this is really bad */
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{
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ERR(resource, "[%04x]: Missing resource handler!\n", pModule->self);
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pNameInfo->handle = NE_DefResourceHandler(
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pNameInfo->handle, pModule->self, hRsrc );
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}
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if (pNameInfo->handle)
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{
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pNameInfo->usage++;
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pNameInfo->flags |= NE_SEGFLAGS_LOADED;
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}
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}
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return pNameInfo->handle;
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}
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return 0;
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}
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/**********************************************************************
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* NE_FreeResource
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*/
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BOOL16 NE_FreeResource( NE_MODULE *pModule, HGLOBAL16 handle )
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{
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NE_TYPEINFO *pTypeInfo;
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NE_NAMEINFO *pNameInfo;
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WORD count;
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if (!handle || !pModule || !pModule->res_table) return handle;
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TRACE(resource, "handle=%04x\n", handle );
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pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
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while (pTypeInfo->type_id)
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{
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pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
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for (count = pTypeInfo->count; count > 0; count--)
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{
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if (pNameInfo->handle == handle)
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{
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if (pNameInfo->usage > 0) pNameInfo->usage--;
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if (pNameInfo->usage == 0)
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{
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GlobalFree16( pNameInfo->handle );
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pNameInfo->handle = 0;
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pNameInfo->flags &= ~NE_SEGFLAGS_LOADED;
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}
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return 0;
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}
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pNameInfo++;
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}
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pTypeInfo = (NE_TYPEINFO *)pNameInfo;
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}
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TRACE(resource, "[%04x]: no intrinsic resource for %04x, assuming DirectResAlloc()!\n",
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pModule->self, handle );
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GlobalFree16( handle );
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return handle;
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}
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