Add DhcpServingParams
Those parameters will be used to start DhcpServer or update its
configuration.
Test: runtest DhcpServingParamsTest.java
Bug: b/109584964
Change-Id: Id8d3dcf62d66dcb02accffa8d8500e30f07af452
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index 451435c..34e9476 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -161,7 +161,7 @@
* @param hostAddress an int coding for an IPv4 address, where higher-order int byte is
* lower-order IPv4 address byte
*/
- public static InetAddress intToInet4AddressHTL(int hostAddress) {
+ public static Inet4Address intToInet4AddressHTL(int hostAddress) {
return intToInet4AddressHTH(Integer.reverseBytes(hostAddress));
}
@@ -169,14 +169,14 @@
* Convert a IPv4 address from an integer to an InetAddress (0x01020304 -> 1.2.3.4)
* @param hostAddress an int coding for an IPv4 address
*/
- public static InetAddress intToInet4AddressHTH(int hostAddress) {
+ public static Inet4Address intToInet4AddressHTH(int hostAddress) {
byte[] addressBytes = { (byte) (0xff & (hostAddress >> 24)),
(byte) (0xff & (hostAddress >> 16)),
(byte) (0xff & (hostAddress >> 8)),
(byte) (0xff & hostAddress) };
try {
- return InetAddress.getByAddress(addressBytes);
+ return (Inet4Address) InetAddress.getByAddress(addressBytes);
} catch (UnknownHostException e) {
throw new AssertionError();
}
@@ -409,6 +409,28 @@
}
/**
+ * Get a prefix mask as Inet4Address for a given prefix length.
+ *
+ * <p>For example 20 -> 255.255.240.0
+ */
+ public static Inet4Address getPrefixMaskAsInet4Address(int prefixLength)
+ throws IllegalArgumentException {
+ return intToInet4AddressHTH(prefixLengthToV4NetmaskIntHTH(prefixLength));
+ }
+
+ /**
+ * Get the broadcast address for a given prefix.
+ *
+ * <p>For example 192.168.0.1/24 -> 192.168.0.255
+ */
+ public static Inet4Address getBroadcastAddress(Inet4Address addr, int prefixLength)
+ throws IllegalArgumentException {
+ final int intBroadcastAddr = inet4AddressToIntHTH(addr)
+ | ~prefixLengthToV4NetmaskIntHTH(prefixLength);
+ return intToInet4AddressHTH(intBroadcastAddr);
+ }
+
+ /**
* Check if IP address type is consistent between two InetAddress.
* @return true if both are the same type. False otherwise.
*/