init of deob

src/main/java/info/sigterm/deob/attributes/Attribute.java

@@ -0,0 +1,32 @@
+package info.sigterm.deob.attributes;
+
+import info.sigterm.deob.Attributes;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+
+public class Attribute
+{
+	private Attributes attributes;
+	private AttributeType type;
+	private int length;
+
+	Attribute(Attributes attr, AttributeType type) throws IOException
+	{
+		this.attributes = attr;
+		this.type = type;
+
+		DataInputStream is = attr.getStream();
+		this.length = is.readInt();
+	}
+
+	public Attributes getAttributes()
+	{
+		return attributes;
+	}
+
+	public int getLength()
+	{
+		return length;
+	}
+}

src/main/java/info/sigterm/deob/attributes/AttributeType.java

@@ -0,0 +1,36 @@
+package info.sigterm.deob.attributes;
+
+public enum AttributeType
+{
+	CONSTANT_VALUE("ConstantValue", ConstantValue.class),
+	CODE("Code", Code.class),
+	UNKNOWN(null, Unknown.class);
+
+	private String name;
+	private Class<? extends Attribute> clazz;
+
+	AttributeType(String name, Class<? extends Attribute> clazz)
+	{
+		this.name = name;
+		this.clazz = clazz;
+	}
+
+	public String getName()
+	{
+		return name;
+	}
+
+	public Class<? extends Attribute> getAttributeClass()
+	{
+		return clazz;
+	}
+
+	public static AttributeType findType(String name)
+	{
+		for (AttributeType t : AttributeType.values())
+			if (t.getName() != null && t.getName().equals(name))
+				return t;
+
+		return UNKNOWN;
+	}
+}

src/main/java/info/sigterm/deob/attributes/Code.java

@@ -0,0 +1,31 @@
+package info.sigterm.deob.attributes;
+
+import info.sigterm.deob.Attributes;
+import info.sigterm.deob.attributes.code.Exceptions;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+
+public class Code extends Attribute
+{
+	private int maxStack;
+	private int maxLocals;
+	private Exceptions exceptions;
+	private Attributes attributes;
+
+	public Code(Attributes attributes) throws IOException
+	{
+		super(attributes, AttributeType.CODE);
+
+		DataInputStream is = attributes.getStream();
+
+		maxStack = is.readUnsignedShort();
+		maxLocals = is.readUnsignedShort();
+
+		int codeLen = is.readInt();
+		is.skip(codeLen);
+
+		exceptions = new Exceptions(this);
+		attributes = new Attributes(this);
+	}
+}

src/main/java/info/sigterm/deob/attributes/ConstantValue.java

@@ -0,0 +1,19 @@
+package info.sigterm.deob.attributes;
+
+import info.sigterm.deob.Attributes;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+
+public class ConstantValue extends Attribute
+{
+	private int constantVlaueIndex;
+
+	public ConstantValue(Attributes attributes) throws IOException
+	{
+		super(attributes, AttributeType.CONSTANT_VALUE);
+
+		DataInputStream is = attributes.getStream();
+		constantVlaueIndex = is.readUnsignedShort();
+	}
+}

src/main/java/info/sigterm/deob/attributes/Unknown.java

@@ -0,0 +1,34 @@
+package info.sigterm.deob.attributes;
+
+import info.sigterm.deob.Attributes;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+
+public class Unknown extends Attribute
+{
+	private byte[] data;
+
+	public Unknown(Attributes attributes) throws IOException
+	{
+		super(attributes, AttributeType.UNKNOWN);
+
+		int len = this.getLength();
+		DataInputStream is = attributes.getStream();
+
+		data = new byte[len];
+
+		int read = 0;
+		while (read < len)
+		{
+			int i = is.read(data, read, len - read);
+
+			if (i < 0)
+				throw new IOException("EOF");
+
+			read += i;
+		}
+
+		assert read == len;
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/Exception.java

@@ -0,0 +1,26 @@
+package info.sigterm.deob.attributes.code;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+
+class Exception
+{
+	private Exceptions exceptions;
+
+	private int startPc;
+	private int endPc;
+	private int handlerPc;
+	private int catchType;
+
+	Exception(Exceptions exceptions) throws IOException
+	{
+		this.exceptions = exceptions;
+
+		DataInputStream is = exceptions.getCode().getAttributes().getStream();
+
+		startPc = is.readUnsignedShort();
+		endPc = is.readUnsignedShort();
+		handlerPc = is.readUnsignedShort();
+		catchType = is.readUnsignedShort();
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/Exceptions.java

@@ -0,0 +1,30 @@
+package info.sigterm.deob.attributes.code;
+
+import info.sigterm.deob.attributes.Code;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+
+public class Exceptions
+{
+	private Code code;
+	private Exception[] exceptions;
+
+	public Exceptions(Code code) throws IOException
+	{
+		this.code = code;
+
+		DataInputStream is = code.getAttributes().getStream();
+
+		int count = is.readUnsignedShort();
+		exceptions = new Exception[count];
+
+		for (int i = 0; i < count; ++i)
+			exceptions[i] = new Exception(this);
+	}
+
+	public Code getCode()
+	{
+		return code;
+	}
+}