beginning of branch i2p.i2p.i2p

router/java/src/net/i2p/data/i2np/GarlicMessage.java

@@ -0,0 +1,84 @@
+package net.i2p.data.i2np;
+/*
+ * free (adj.): unencumbered; not under the control of others
+ * Written by jrandom in 2003 and released into the public domain 
+ * with no warranty of any kind, either expressed or implied.  
+ * It probably won't make your computer catch on fire, or eat 
+ * your children, but it might.  Use at your own risk.
+ *
+ */
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import net.i2p.data.DataFormatException;
+import net.i2p.data.DataHelper;
+import net.i2p.util.Log;
+
+/**
+ * Defines the wrapped garlic message
+ *
+ * @author jrandom
+ */
+public class GarlicMessage extends I2NPMessageImpl {
+    private final static Log _log = new Log(GarlicMessage.class);
+    public final static int MESSAGE_TYPE = 11;
+    private byte[] _data;
+    
+    public GarlicMessage() { 
+	setData(null);
+    }
+    
+    public byte[] getData() { return _data; }
+    public void setData(byte[] data) { _data = data; }
+    
+    public void readMessage(InputStream in, int type) throws I2NPMessageException, IOException {
+	if (type != MESSAGE_TYPE) throw new I2NPMessageException("Message type is incorrect for this message");
+        try {
+	    long len = DataHelper.readLong(in, 4);
+	    _data = new byte[(int)len];
+	    int read = read(in, _data);
+	    if (read != len) 
+		throw new I2NPMessageException("Incorrect size read");
+        } catch (DataFormatException dfe) {
+            throw new I2NPMessageException("Unable to load the message data", dfe);
+        }
+    }
+    
+    protected byte[] writeMessage() throws I2NPMessageException, IOException {
+	if ( (_data == null) || (_data.length <= 0) ) throw new I2NPMessageException("Not enough data to write out");
+	
+        ByteArrayOutputStream os = new ByteArrayOutputStream(32);
+        try {
+	    DataHelper.writeLong(os, 4, _data.length);
+	    os.write(_data);
+        } catch (DataFormatException dfe) {
+            throw new I2NPMessageException("Error writing out the message data", dfe);
+        }
+        return os.toByteArray();
+    }
+    
+    public int getType() { return MESSAGE_TYPE; }
+    
+    public int hashCode() {
+	return DataHelper.hashCode(getData());
+    }
+    
+    public boolean equals(Object object) {
+        if ( (object != null) && (object instanceof GarlicMessage) ) {
+            GarlicMessage msg = (GarlicMessage)object;
+            return DataHelper.eq(getData(),msg.getData());
+        } else {
+            return false;
+        }
+    }
+    
+    public String toString() { 
+        StringBuffer buf = new StringBuffer();
+        buf.append("[GarlicMessage: ");
+        buf.append("\n\tData length: ").append(getData().length).append(" bytes");
+        buf.append("]");
+        return buf.toString();
+    }
+}