1 files changed, 175 insertions, 0 deletions
diff --git a/libjava/java/net/DatagramPacket.java b/libjava/java/net/DatagramPacket.java
new file mode 100644
index 00000000000..72b7bbdd4bb
--- /dev/null
+++ b/libjava/java/net/DatagramPacket.java
@@ -0,0 +1,175 @@
+// DatagramPacket.java - Represents packets in a connectionless protocol.
+
+/* Copyright (C) 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+package java.net;
+
+/**
+ * @author Warren Levy <warrenl@cygnus.com>
+ * @date April 28, 1999.
+ */
+
+/**
+ * Written using on-line Java Platform 1.2 API Specification, as well
+ * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
+ * Status:  Believed complete and correct.
+ */
+
+public final class DatagramPacket
+{
+  private byte[] buffer;
+  private int offset;
+  private int length;
+  private InetAddress address;
+  private int port;
+
+  // JDK1.2
+  public DatagramPacket(byte[] buf, int offset, int length)
+  {
+    // FIXME: We can't currently rely on NullPointerException being
+    // thrown when we invoke a method on a null object.
+    if (buf == null)
+      throw new NullPointerException("Null buffer");
+    if (offset < 0)
+      throw new IllegalArgumentException("Invalid offset: " + offset);
+    if (length < 0)
+      throw new IllegalArgumentException("Invalid length: " + length);
+    if (offset + length > buf.length)
+      throw new IllegalArgumentException("Potential buffer overflow - offset: "
+			+ offset + " length: " + length);
+
+    buffer = buf;
+    this.offset = offset;
+    this.length = length;
+    this.address = null;
+    this.port = -1;
+  }
+
+  public DatagramPacket(byte[] buf, int length)
+  {
+    this(buf, 0, length);
+  }
+
+  // JDK1.2
+  public DatagramPacket(byte[] buf, int offset, int length,
+	InetAddress address, int port)
+  {
+    // FIXME: We can't currently rely on NullPointerException being
+    // thrown when we invoke a method on a null object.
+    if (buf == null)
+      throw new NullPointerException("Null buffer");
+    if (offset < 0)
+      throw new IllegalArgumentException("Invalid offset: " + offset);
+    if (length < 0)
+      throw new IllegalArgumentException("Invalid length: " + length);
+    if (offset + length > buf.length)
+      throw new IllegalArgumentException("Potential buffer overflow - offset: "
+			+ offset + " length: " + length);
+    if (port < 0 || port > 65535)
+      throw new IllegalArgumentException("Invalid port: " + port);
+    if (address == null)
+      throw new NullPointerException("Null address");
+
+    buffer = buf;
+    this.offset = offset;
+    this.length = length;
+    this.address = address;
+    this.port = port;
+  }
+
+  public DatagramPacket(byte[] buf, int length, InetAddress address, int port)
+  {
+    this(buf, 0, length, address, port);
+  }
+
+  public synchronized InetAddress getAddress()
+  {
+    return address;
+  }
+
+  public synchronized int getPort()
+  {
+    return port;
+  }
+
+  public synchronized byte[] getData()
+  {
+    return buffer;
+  }
+
+  // JDK1.2
+  public synchronized int getOffset()
+  {
+    return offset;
+  }
+
+  public synchronized int getLength()
+  {
+    return length;
+  }
+
+  public synchronized void setAddress(InetAddress iaddr)
+  {
+    if (iaddr == null)
+      throw new NullPointerException("Null address");
+
+    address = iaddr;
+  }
+
+  public synchronized void setPort(int iport)
+  {
+    if (iport < 0 || iport > 65535)
+      throw new IllegalArgumentException("Invalid port: " + iport);
+
+    port = iport;
+  }
+
+  public synchronized void setData(byte[] buf)
+  {
+    // This form of setData requires setLength to be called separately
+    // and subsequently.
+    if (buf == null)
+      throw new NullPointerException("Null buffer");
+
+    buffer = buf;
+  }
+
+  // JDK1.2
+  public synchronized void setData(byte[] buf, int offset, int length)
+  {
+    // This form of setData must be used if offset is to be changed.
+
+    // FIXME: We can't currently rely on NullPointerException being
+    // thrown when we invoke a method on a null object.
+    if (buf == null)
+      throw new NullPointerException("Null buffer");
+    if (offset < 0)
+      throw new IllegalArgumentException("Invalid offset: " + offset);
+    if (length < 0)
+      throw new IllegalArgumentException("Invalid length: " + length);
+    if (offset + length > buf.length)
+      throw new IllegalArgumentException("Potential buffer overflow - offset: "
+			+ offset + " length: " + length);
+
+    buffer = buf;
+    this.offset = offset;
+    this.length = length;
+  }
+
+  public synchronized void setLength(int length)
+  {
+    if (length < 0)
+      throw new IllegalArgumentException("Invalid length: " + length);
+    if (offset + length > buffer.length)
+      throw new IllegalArgumentException("Potential buffer overflow - offset: "
+			+ offset + " length: " + length);
+
+    this.length = length;
+  }
+}