}
return (addVMCode(FirstByte, vmCode, Length));
}
private boolean addVMCode(int firstByte, List<Byte> vmCode, int length) {
BitInput Inp = new BitInput();
Inp.InitBitInput();
// memcpy(Inp.InBuf,Code,Min(BitInput::MAX_SIZE,CodeSize));
for (int i = 0; i < Math.min(BitInput.MAX_SIZE, vmCode.size()); i++) {
Inp.getInBuf()[i] = vmCode.get(i);
}
rarVM.init();
int FiltPos;
if ((firstByte & 0x80) != 0) {
FiltPos = RarVM.ReadData(Inp);
if (FiltPos == 0) {
initFilters();
} else {
FiltPos--;
}
} else
FiltPos = lastFilter; // use the same filter as last time
if (FiltPos > filters.size() || FiltPos > oldFilterLengths.size()) {
return (false);
}
lastFilter = FiltPos;
boolean NewFilter = (FiltPos == filters.size());
UnpackFilter StackFilter = new UnpackFilter(); // new filter for
// PrgStack
UnpackFilter Filter;
if (NewFilter) // new filter code, never used before since VM reset
{
// too many different filters, corrupt archive
if (FiltPos > 1024) {
return (false);
}
// Filters[Filters.Size()-1]=Filter=new UnpackFilter;
Filter = new UnpackFilter();
filters.add(Filter);
StackFilter.setParentFilter(filters.size() - 1);
oldFilterLengths.add(0);
Filter.setExecCount(0);
} else // filter was used in the past
{
Filter = filters.get(FiltPos);
StackFilter.setParentFilter(FiltPos);
Filter.setExecCount(Filter.getExecCount() + 1);// ->ExecCount++;
}
prgStack.add(StackFilter);
StackFilter.setExecCount(Filter.getExecCount());// ->ExecCount;
int BlockStart = RarVM.ReadData(Inp);
if ((firstByte & 0x40) != 0) {
BlockStart += 258;
}
StackFilter.setBlockStart((BlockStart + unpPtr) & Compress.MAXWINMASK);
if ((firstByte & 0x20) != 0) {
StackFilter.setBlockLength(RarVM.ReadData(Inp));
} else {
StackFilter
.setBlockLength(FiltPos < oldFilterLengths.size() ? oldFilterLengths
.get(FiltPos)
: 0);
}
StackFilter.setNextWindow((wrPtr != unpPtr)
&& ((wrPtr - unpPtr) & Compress.MAXWINMASK) <= BlockStart);
// DebugLog("\nNextWindow: UnpPtr=%08x WrPtr=%08x
// BlockStart=%08x",UnpPtr,WrPtr,BlockStart);
oldFilterLengths.set(FiltPos, StackFilter.getBlockLength());
// memset(StackFilter->Prg.InitR,0,sizeof(StackFilter->Prg.InitR));
Arrays.fill(StackFilter.getPrg().getInitR(), 0);
StackFilter.getPrg().getInitR()[3] = RarVM.VM_GLOBALMEMADDR;// StackFilter->Prg.InitR[3]=VM_GLOBALMEMADDR;
StackFilter.getPrg().getInitR()[4] = StackFilter.getBlockLength();// StackFilter->Prg.InitR[4]=StackFilter->BlockLength;
StackFilter.getPrg().getInitR()[5] = StackFilter.getExecCount();// StackFilter->Prg.InitR[5]=StackFilter->ExecCount;
if ((firstByte & 0x10) != 0) // set registers to optional parameters
// if any
{
int InitMask = Inp.fgetbits() >>> 9;
Inp.faddbits(7);
for (int I = 0; I < 7; I++) {
if ((InitMask & (1 << I)) != 0) {
// StackFilter->Prg.InitR[I]=RarVM::ReadData(Inp);
StackFilter.getPrg().getInitR()[I] = RarVM.ReadData(Inp);
}
}
}
if (NewFilter) {
int VMCodeSize = RarVM.ReadData(Inp);
if (VMCodeSize >= 0x10000 || VMCodeSize == 0) {
return (false);
}
byte[] VMCode = new byte[VMCodeSize];
for (int I = 0; I < VMCodeSize; I++) {
if (Inp.Overflow(3)) {
return (false);
}
VMCode[I] = (byte) (Inp.fgetbits() >> 8);
Inp.faddbits(8);
}
// VM.Prepare(&VMCode[0],VMCodeSize,&Filter->Prg);
rarVM.prepare(VMCode, VMCodeSize, Filter.getPrg());
}
StackFilter.getPrg().setAltCmd(Filter.getPrg().getCmd());// StackFilter->Prg.AltCmd=&Filter->Prg.Cmd[0];
StackFilter.getPrg().setCmdCount(Filter.getPrg().getCmdCount());// StackFilter->Prg.CmdCount=Filter->Prg.CmdCount;
int StaticDataSize = Filter.getPrg().getStaticData().size();
if (StaticDataSize > 0 && StaticDataSize < RarVM.VM_GLOBALMEMSIZE) {
// read statically defined data contained in DB commands
// StackFilter->Prg.StaticData.Add(StaticDataSize);
StackFilter.getPrg().setStaticData(Filter.getPrg().getStaticData());
// memcpy(&StackFilter->Prg.StaticData[0],&Filter->Prg.StaticData[0],StaticDataSize);
}
if (StackFilter.getPrg().getGlobalData().size() < RarVM.VM_FIXEDGLOBALSIZE) {
// StackFilter->Prg.GlobalData.Reset();
// StackFilter->Prg.GlobalData.Add(VM_FIXEDGLOBALSIZE);
StackFilter.getPrg().getGlobalData().clear();
StackFilter.getPrg().getGlobalData().setSize(
RarVM.VM_FIXEDGLOBALSIZE);
}
// byte *GlobalData=&StackFilter->Prg.GlobalData[0];
Vector<Byte> globalData = StackFilter.getPrg().getGlobalData();
for (int I = 0; I < 7; I++) {
rarVM.setLowEndianValue(globalData, I * 4, StackFilter.getPrg()
.getInitR()[I]);
}
// VM.SetLowEndianValue((uint
// *)&GlobalData[0x1c],StackFilter->BlockLength);
rarVM.setLowEndianValue(globalData, 0x1c, StackFilter.getBlockLength());
// VM.SetLowEndianValue((uint *)&GlobalData[0x20],0);
rarVM.setLowEndianValue(globalData, 0x20, 0);
rarVM.setLowEndianValue(globalData, 0x24, 0);
rarVM.setLowEndianValue(globalData, 0x28, 0);
// VM.SetLowEndianValue((uint
// *)&GlobalData[0x2c],StackFilter->ExecCount);
rarVM.setLowEndianValue(globalData, 0x2c, StackFilter.getExecCount());
// memset(&GlobalData[0x30],0,16);
for (int i = 0; i < 16; i++) {
globalData.set(0x30 + i, Byte.valueOf((byte) (0)));
}
if ((firstByte & 8) != 0) // put data block passed as parameter if any
{
if (Inp.Overflow(3)) {
return (false);
}
int DataSize = RarVM.ReadData(Inp);
if (DataSize > RarVM.VM_GLOBALMEMSIZE - RarVM.VM_FIXEDGLOBALSIZE) {
return (false);
}
int CurSize = StackFilter.getPrg().getGlobalData().size();
if (CurSize < DataSize + RarVM.VM_FIXEDGLOBALSIZE) {
// StackFilter->Prg.GlobalData.Add(DataSize+VM_FIXEDGLOBALSIZE-CurSize);
StackFilter.getPrg().getGlobalData().setSize(
DataSize + RarVM.VM_FIXEDGLOBALSIZE - CurSize);
}
int offset = RarVM.VM_FIXEDGLOBALSIZE;
globalData = StackFilter.getPrg().getGlobalData();
for (int I = 0; I < DataSize; I++) {
if (Inp.Overflow(3)) {
return (false);
}
globalData.set(offset + I, Byte
.valueOf((byte) (Inp.fgetbits() >>> 8)));
Inp.faddbits(8);
}
}
return (true);
}