auto import from //depot/cupcake/@135843
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
new file mode 100644
index 0000000..1153648
--- /dev/null
+++ b/core/java/android/net/NetworkUtils.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2008 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;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+/**
+ * Native methods for managing network interfaces.
+ *
+ * {@hide}
+ */
+public class NetworkUtils {
+ /** Bring the named network interface down. */
+ public native static int disableInterface(String interfaceName);
+
+ /** Add a route to the specified host via the named interface. */
+ public native static int addHostRoute(String interfaceName, int hostaddr);
+
+ /** Add a default route for the named interface. */
+ public native static int setDefaultRoute(String interfaceName, int gwayAddr);
+
+ /** Return the gateway address for the default route for the named interface. */
+ public native static int getDefaultRoute(String interfaceName);
+
+ /** Remove host routes that uses the named interface. */
+ public native static int removeHostRoutes(String interfaceName);
+
+ /** Remove the default route for the named interface. */
+ public native static int removeDefaultRoute(String interfaceName);
+
+ /** Reset any sockets that are connected via the named interface. */
+ public native static int resetConnections(String interfaceName);
+
+ /**
+ * Start the DHCP client daemon, in order to have it request addresses
+ * for the named interface, and then configure the interface with those
+ * addresses. This call blocks until it obtains a result (either success
+ * or failure) from the daemon.
+ * @param interfaceName the name of the interface to configure
+ * @param ipInfo if the request succeeds, this object is filled in with
+ * the IP address information.
+ * @return {@code true} for success, {@code false} for failure
+ */
+ public native static boolean runDhcp(String interfaceName, DhcpInfo ipInfo);
+
+ /**
+ * Shut down the DHCP client daemon.
+ * @param interfaceName the name of the interface for which the daemon
+ * should be stopped
+ * @return {@code true} for success, {@code false} for failure
+ */
+ public native static boolean stopDhcp(String interfaceName);
+
+ /**
+ * Release the current DHCP lease.
+ * @param interfaceName the name of the interface for which the lease should
+ * be released
+ * @return {@code true} for success, {@code false} for failure
+ */
+ public native static boolean releaseDhcpLease(String interfaceName);
+
+ /**
+ * Return the last DHCP-related error message that was recorded.
+ * <p/>NOTE: This string is not localized, but currently it is only
+ * used in logging.
+ * @return the most recent error message, if any
+ */
+ public native static String getDhcpError();
+
+ /**
+ * When static IP configuration has been specified, configure the network
+ * interface according to the values supplied.
+ * @param interfaceName the name of the interface to configure
+ * @param ipInfo the IP address, default gateway, and DNS server addresses
+ * with which to configure the interface.
+ * @return {@code true} for success, {@code false} for failure
+ */
+ public static boolean configureInterface(String interfaceName, DhcpInfo ipInfo) {
+ return configureNative(interfaceName,
+ ipInfo.ipAddress,
+ ipInfo.netmask,
+ ipInfo.gateway,
+ ipInfo.dns1,
+ ipInfo.dns2);
+ }
+
+ private native static boolean configureNative(
+ String interfaceName, int ipAddress, int netmask, int gateway, int dns1, int dns2);
+
+ /**
+ * Look up a host name and return the result as an int. Works if the argument
+ * is an IP address in dot notation. Obviously, this can only be used for IPv4
+ * addresses.
+ * @param hostname the name of the host (or the IP address)
+ * @return the IP address as an {@code int} in network byte order
+ */
+ public static int lookupHost(String hostname) {
+ InetAddress inetAddress;
+ try {
+ inetAddress = InetAddress.getByName(hostname);
+ } catch (UnknownHostException e) {
+ return -1;
+ }
+ byte[] addrBytes;
+ int addr;
+ addrBytes = inetAddress.getAddress();
+ addr = ((addrBytes[3] & 0xff) << 24)
+ | ((addrBytes[2] & 0xff) << 16)
+ | ((addrBytes[1] & 0xff) << 8)
+ | (addrBytes[0] & 0xff);
+ return addr;
+ }
+}