bool hasObjectKey(intptr_t aIntObjectKey) { return (objectKey()==aIntObjectKey); };
Object *Object::parseObject( ResourceManager *resMgr, Module *module, SSIZE_T &off ) {
Object *obj;
ObjectLocation loc;
BYTE buf[BIOP_MAX_HEADER];
SSIZE_T offset = 0;
SIZE_T len = module->read( off, buf, BIOP_MAX_HEADER );
if (len < BIOP_MAX_HEADER) {
printf( "[dsmcc::Object] Warning: Not enough buffer: len=%ld, offset=%ld\n", len, offset );
return NULL;
}
DWORD magic = RDW(buf,offset);
if (magic != BIOP_MAGIC) {
printf( "[dsmcc::Object] Warning: Bad magic number: magic=%x, found=%lx\n", BIOP_MAGIC, magic );
return NULL;
}
WORD biopVersion = RW(buf,offset);
if (biopVersion != BIOP_VER) {
printf( "[dsmcc::Object] Warning: Invalid version\n" );
return NULL;
}
BYTE byteOrder = RB(buf,offset);
if (byteOrder) {
printf( "[dsmcc::Object] Warning: Invalid byte order\n" );
return NULL;
}
BYTE msgType = RB(buf,offset);
if (msgType) {
printf( "[dsmcc::Object] Warning: Invalid type\n" );
return NULL;
}
// Check BIOP message size
DWORD msgSize = RDW(buf,offset);
if (module->size()-off-offset < msgSize) {
printf( "[dsmcc::Object] Warning: Not enough bytes for BIOP message: msgSize=%ld, rest%ld\n", msgSize, module->size()-off-offset );
return NULL;
}
// 12 bytes parsed = BIOP_MIN_HEADER
offset += objectKey( buf+offset, len-offset, loc.keyID );
DWORD objectKindLen = RDW(buf,offset);
if (objectKindLen != 4) {
printf( "[dsmcc::Object] Warning: Invalid object kind\n" );
return NULL;
}
// Chapter 11: The downloadID field of the DownloadDataBlock messages shall have the same value
// as the carouselID field of the U-U Object Carousel
loc.carouselID = module->downloadID();
loc.moduleID = module->id();
DWORD objectKind = RDW(buf,offset);
switch (objectKind) {
case BIOP_OBJECT_FILE:
obj = new File( loc );
break;
case BIOP_OBJECT_DIR:
case BIOP_OBJECT_GW:
obj = new Directory( loc );
break;
// case BIOP_OBJECT_STR:
// break;
case BIOP_OBJECT_STE:
obj = new StreamEvent( loc );
break;
default:
obj = NULL;
printf( "[dsmcc::Object] Warning: BIOP object kind %lx not processed\n", objectKind );
}
WORD objectInfoLen = RW(buf,offset);
// Update offset (27 bytes parsed = BIOP_MAX_HEADER)
off += offset;
if (obj && !obj->parse( resMgr, module, off, objectInfoLen )) {
delete obj;
obj = NULL;
}
return obj;
}
/// checks
bool hasObjectKey(char &aMemAddrObjectKey) { return (objectKey()==(intptr_t)&aMemAddrObjectKey); };
