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| /* ### | |
| * IP: Public Domain | |
| */ | |
| package mobiledevices.dmg.decmpfs; | |
| import java.io.IOException; | |
| import mobiledevices.dmg.ghidra.GBinaryReader; | |
| import mobiledevices.dmg.ghidra.GStringUtilities; | |
| public class DecmpfsHeader /*implements StructConverter*/ { | |
| private int compression_magic; | |
| private int compression_type; | |
| private long uncompressed_size; | |
| private byte [] attr_bytes; | |
| public DecmpfsHeader(GBinaryReader reader, int size) throws IOException { | |
| long index = reader.getPointerIndex(); | |
| this.compression_magic = reader.readNextInt(); | |
| boolean originalEndian = reader.isLittleEndian(); | |
| reader.setLittleEndian( true ); | |
| this.compression_type = reader.readNextInt(); | |
| this.uncompressed_size = reader.readNextLong(); | |
| reader.setLittleEndian( originalEndian ); | |
| long endIndex = index + size + 1; //TODO always add 1???? | |
| if ( ( endIndex % 2 ) != 0 ) { | |
| endIndex = endIndex - 1; | |
| } | |
| long nElements = endIndex - reader.getPointerIndex(); | |
| if ( ( nElements % 2 ) != 0 ) {//TODO | |
| ++nElements; | |
| } | |
| else if ( nElements < 0 ) {//TODO | |
| System.err.println( "here" ); | |
| } | |
| this.attr_bytes = reader.readNextByteArray( (int)nElements ); | |
| } | |
| public String getCompressionMagic() { | |
| return GStringUtilities.toString( compression_magic ); | |
| } | |
| public int getCompressionType() { | |
| return compression_type; | |
| } | |
| public long getUncompressedSize() { | |
| return uncompressed_size; | |
| } | |
| public byte [] getAttrBytes() { | |
| return attr_bytes; | |
| } | |
| // @Override | |
| // public DataType toDataType() throws DuplicateNameException, IOException { | |
| // String name = StructConverterUtil.parseName( DecmpfsHeader.class ); | |
| // Structure struct = new StructureDataType( name + "_" + attr_bytes.length, 0 ); | |
| // | |
| // struct.add( STRING, 4, "compression_magic", null ); | |
| // struct.add( DWORD, "compression_type", null ); | |
| // struct.add( QWORD, "uncompressed_size", null ); | |
| // | |
| // if ( attr_bytes.length > 0 ) { | |
| // ArrayDataType byteArrayDT = new ArrayDataType( BYTE , attr_bytes.length, BYTE.getLength() ); | |
| // struct.add( byteArrayDT, "attr_bytes", null ); | |
| // } | |
| // return struct; | |
| // } | |
| } |