1 files changed, 71 insertions, 0 deletions
diff --git a/src/android/net/dhcp/DhcpRequestPacket.java b/src/android/net/dhcp/DhcpRequestPacket.java
new file mode 100644
index 0000000..231d045
--- /dev/null
+++ b/src/android/net/dhcp/DhcpRequestPacket.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.dhcp;
+
+import android.util.Log;
+
+import java.net.Inet4Address;
+import java.nio.ByteBuffer;
+
+/**
+ * This class implements the DHCP-REQUEST packet.
+ */
+class DhcpRequestPacket extends DhcpPacket {
+    /**
+     * Generates a REQUEST packet with the specified parameters.
+     */
+    DhcpRequestPacket(int transId, short secs, Inet4Address clientIp, Inet4Address relayIp,
+            byte[] clientMac, boolean broadcast) {
+        super(transId, secs, clientIp, INADDR_ANY, INADDR_ANY, relayIp, clientMac, broadcast);
+    }
+
+    public String toString() {
+        String s = super.toString();
+        return s + " REQUEST, desired IP " + mRequestedIp + " from host '"
+            + mHostName + "', param list length "
+            + (mRequestedParams == null ? 0 : mRequestedParams.length);
+    }
+
+    /**
+     * Fills in a packet with the requested REQUEST attributes.
+     */
+    public ByteBuffer buildPacket(int encap, short destUdp, short srcUdp) {
+        ByteBuffer result = ByteBuffer.allocate(MAX_LENGTH);
+
+        fillInPacket(encap, INADDR_BROADCAST, INADDR_ANY, destUdp, srcUdp,
+            result, DHCP_BOOTREQUEST, mBroadcast);
+        result.flip();
+        return result;
+    }
+
+    /**
+     * Adds the optional parameters to the client-generated REQUEST packet.
+     */
+    void finishPacket(ByteBuffer buffer) {
+        addTlv(buffer, DHCP_MESSAGE_TYPE, DHCP_MESSAGE_TYPE_REQUEST);
+        addTlv(buffer, DHCP_CLIENT_IDENTIFIER, getClientId());
+        if (!INADDR_ANY.equals(mRequestedIp)) {
+            addTlv(buffer, DHCP_REQUESTED_IP, mRequestedIp);
+        }
+        if (!INADDR_ANY.equals(mServerIdentifier)) {
+            addTlv(buffer, DHCP_SERVER_IDENTIFIER, mServerIdentifier);
+        }
+        addCommonClientTlvs(buffer);
+        addTlv(buffer, DHCP_PARAMETER_LIST, mRequestedParams);
+        addTlvEnd(buffer);
+    }
+}