Move NetworkUtils used by NetworkStack
Depending on usage move into NetworkStackUtils or shared
Inet4AddressUtils.
Test: atest FrameworksNetTests NetworkStackTests
Bug: 112869080
(Cherry-pick of aosp/881952)
Change-Id: Ie20dcee375b377236004a7689890729493aca857
diff --git a/Android.bp b/Android.bp
index 56f3c23..813e98c 100644
--- a/Android.bp
+++ b/Android.bp
@@ -912,6 +912,27 @@
api_dir: "aidl/networkstack",
}
+filegroup {
+ name: "framework-networkstack-shared-srcs",
+ srcs: [
+ // TODO: remove these annotations as soon as we can use andoid.support.annotations.*
+ "core/java/android/annotation/NonNull.java",
+ "core/java/android/annotation/Nullable.java",
+ "core/java/android/annotation/IntDef.java",
+ "core/java/android/annotation/UnsupportedAppUsage.java",
+ "core/java/android/util/LocalLog.java",
+ "core/java/com/android/internal/annotations/VisibleForTesting.java",
+ "core/java/com/android/internal/util/HexDump.java",
+ "core/java/com/android/internal/util/IState.java",
+ "core/java/com/android/internal/util/MessageUtils.java",
+ "core/java/com/android/internal/util/Preconditions.java",
+ "core/java/com/android/internal/util/State.java",
+ "core/java/com/android/internal/util/StateMachine.java",
+ "core/java/com/android/internal/util/WakeupMessage.java",
+ "core/java/android/net/shared/*.java",
+ ]
+}
+
// Build ext.jar
// ============================================================
java_library {
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index c996d01..39db4fe 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -21,8 +21,10 @@
import android.annotation.NonNull;
import android.annotation.UnsupportedAppUsage;
+import android.net.shared.Inet4AddressUtils;
import android.os.Build;
import android.os.Parcel;
+import android.system.ErrnoException;
import android.system.Os;
import android.util.Log;
import android.util.Pair;
@@ -39,8 +41,6 @@
import java.util.Locale;
import java.util.TreeSet;
-import android.system.ErrnoException;
-
/**
* Native methods for managing network interfaces.
*
@@ -177,119 +177,37 @@
FileDescriptor fd) throws IOException;
/**
- * @see #intToInet4AddressHTL(int)
- * @deprecated Use either {@link #intToInet4AddressHTH(int)}
- * or {@link #intToInet4AddressHTL(int)}
+ * @see Inet4AddressUtils#intToInet4AddressHTL(int)
+ * @deprecated Use either {@link Inet4AddressUtils#intToInet4AddressHTH(int)}
+ * or {@link Inet4AddressUtils#intToInet4AddressHTL(int)}
*/
@Deprecated
@UnsupportedAppUsage
public static InetAddress intToInetAddress(int hostAddress) {
- return intToInet4AddressHTL(hostAddress);
+ return Inet4AddressUtils.intToInet4AddressHTL(hostAddress);
}
/**
- * Convert a IPv4 address from an integer to an InetAddress (0x04030201 -> 1.2.3.4)
- *
- * <p>This method uses the higher-order int bytes as the lower-order IPv4 address bytes,
- * which is an unusual convention. Consider {@link #intToInet4AddressHTH(int)} instead.
- * @param hostAddress an int coding for an IPv4 address, where higher-order int byte is
- * lower-order IPv4 address byte
- */
- public static Inet4Address intToInet4AddressHTL(int hostAddress) {
- return intToInet4AddressHTH(Integer.reverseBytes(hostAddress));
- }
-
- /**
- * 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 Inet4Address intToInet4AddressHTH(int hostAddress) {
- byte[] addressBytes = { (byte) (0xff & (hostAddress >> 24)),
- (byte) (0xff & (hostAddress >> 16)),
- (byte) (0xff & (hostAddress >> 8)),
- (byte) (0xff & hostAddress) };
-
- try {
- return (Inet4Address) InetAddress.getByAddress(addressBytes);
- } catch (UnknownHostException e) {
- throw new AssertionError();
- }
- }
-
- /**
- * @see #inet4AddressToIntHTL(Inet4Address)
- * @deprecated Use either {@link #inet4AddressToIntHTH(Inet4Address)}
- * or {@link #inet4AddressToIntHTL(Inet4Address)}
+ * @see Inet4AddressUtils#inet4AddressToIntHTL(Inet4Address)
+ * @deprecated Use either {@link Inet4AddressUtils#inet4AddressToIntHTH(Inet4Address)}
+ * or {@link Inet4AddressUtils#inet4AddressToIntHTL(Inet4Address)}
*/
@Deprecated
public static int inetAddressToInt(Inet4Address inetAddr)
throws IllegalArgumentException {
- return inet4AddressToIntHTL(inetAddr);
+ return Inet4AddressUtils.inet4AddressToIntHTL(inetAddr);
}
/**
- * Convert an IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x01020304)
- *
- * <p>This conversion can help order IP addresses: considering the ordering
- * 192.0.2.1 < 192.0.2.2 < ..., resulting ints will follow that ordering if read as unsigned
- * integers with {@link Integer#toUnsignedLong}.
- * @param inetAddr is an InetAddress corresponding to the IPv4 address
- * @return the IP address as integer
- */
- public static int inet4AddressToIntHTH(Inet4Address inetAddr)
- throws IllegalArgumentException {
- byte [] addr = inetAddr.getAddress();
- return ((addr[0] & 0xff) << 24) | ((addr[1] & 0xff) << 16)
- | ((addr[2] & 0xff) << 8) | (addr[3] & 0xff);
- }
-
- /**
- * Convert a IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x04030201)
- *
- * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
- * which is an unusual convention. Consider {@link #inet4AddressToIntHTH(Inet4Address)} instead.
- * @param inetAddr is an InetAddress corresponding to the IPv4 address
- * @return the IP address as integer
- */
- public static int inet4AddressToIntHTL(Inet4Address inetAddr) {
- return Integer.reverseBytes(inet4AddressToIntHTH(inetAddr));
- }
-
- /**
- * @see #prefixLengthToV4NetmaskIntHTL(int)
- * @deprecated Use either {@link #prefixLengthToV4NetmaskIntHTH(int)}
- * or {@link #prefixLengthToV4NetmaskIntHTL(int)}
+ * @see Inet4AddressUtils#prefixLengthToV4NetmaskIntHTL(int)
+ * @deprecated Use either {@link Inet4AddressUtils#prefixLengthToV4NetmaskIntHTH(int)}
+ * or {@link Inet4AddressUtils#prefixLengthToV4NetmaskIntHTL(int)}
*/
@Deprecated
@UnsupportedAppUsage
public static int prefixLengthToNetmaskInt(int prefixLength)
throws IllegalArgumentException {
- return prefixLengthToV4NetmaskIntHTL(prefixLength);
- }
-
- /**
- * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0xffff8000)
- * @return the IPv4 netmask as an integer
- */
- public static int prefixLengthToV4NetmaskIntHTH(int prefixLength)
- throws IllegalArgumentException {
- if (prefixLength < 0 || prefixLength > 32) {
- throw new IllegalArgumentException("Invalid prefix length (0 <= prefix <= 32)");
- }
- // (int)a << b is equivalent to a << (b & 0x1f): can't shift by 32 (-1 << 32 == -1)
- return prefixLength == 0 ? 0 : 0xffffffff << (32 - prefixLength);
- }
-
- /**
- * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0x0080ffff).
- *
- * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
- * which is an unusual convention. Consider {@link #prefixLengthToV4NetmaskIntHTH(int)} instead.
- * @return the IPv4 netmask as an integer
- */
- public static int prefixLengthToV4NetmaskIntHTL(int prefixLength)
- throws IllegalArgumentException {
- return Integer.reverseBytes(prefixLengthToV4NetmaskIntHTH(prefixLength));
+ return Inet4AddressUtils.prefixLengthToV4NetmaskIntHTL(prefixLength);
}
/**
@@ -307,17 +225,13 @@
* @return the network prefix length
* @throws IllegalArgumentException the specified netmask was not contiguous.
* @hide
+ * @deprecated use {@link Inet4AddressUtils#netmaskToPrefixLength(Inet4Address)}
*/
@UnsupportedAppUsage
+ @Deprecated
public static int netmaskToPrefixLength(Inet4Address netmask) {
- // inetAddressToInt returns an int in *network* byte order.
- int i = Integer.reverseBytes(inetAddressToInt(netmask));
- int prefixLength = Integer.bitCount(i);
- int trailingZeros = Integer.numberOfTrailingZeros(i);
- if (trailingZeros != 32 - prefixLength) {
- throw new IllegalArgumentException("Non-contiguous netmask: " + Integer.toHexString(i));
- }
- return prefixLength;
+ // This is only here because some apps seem to be using it (@UnsupportedAppUsage).
+ return Inet4AddressUtils.netmaskToPrefixLength(netmask);
}
@@ -408,16 +322,8 @@
*/
@UnsupportedAppUsage
public static int getImplicitNetmask(Inet4Address address) {
- int firstByte = address.getAddress()[0] & 0xff; // Convert to an unsigned value.
- if (firstByte < 128) {
- return 8;
- } else if (firstByte < 192) {
- return 16;
- } else if (firstByte < 224) {
- return 24;
- } else {
- return 32; // Will likely not end well for other reasons.
- }
+ // Only here because it seems to be used by apps
+ return Inet4AddressUtils.getImplicitNetmask(address);
}
/**
@@ -445,28 +351,6 @@
}
/**
- * 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.
*/
diff --git a/core/java/android/net/shared/Inet4AddressUtils.java b/core/java/android/net/shared/Inet4AddressUtils.java
new file mode 100644
index 0000000..bec0c84
--- /dev/null
+++ b/core/java/android/net/shared/Inet4AddressUtils.java
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2019 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.shared;
+
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+/**
+ * Collection of utilities to work with IPv4 addresses.
+ * @hide
+ */
+public class Inet4AddressUtils {
+
+ /**
+ * Convert a IPv4 address from an integer to an InetAddress (0x04030201 -> 1.2.3.4)
+ *
+ * <p>This method uses the higher-order int bytes as the lower-order IPv4 address bytes,
+ * which is an unusual convention. Consider {@link #intToInet4AddressHTH(int)} instead.
+ * @param hostAddress an int coding for an IPv4 address, where higher-order int byte is
+ * lower-order IPv4 address byte
+ */
+ public static Inet4Address intToInet4AddressHTL(int hostAddress) {
+ return intToInet4AddressHTH(Integer.reverseBytes(hostAddress));
+ }
+
+ /**
+ * 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 Inet4Address intToInet4AddressHTH(int hostAddress) {
+ byte[] addressBytes = { (byte) (0xff & (hostAddress >> 24)),
+ (byte) (0xff & (hostAddress >> 16)),
+ (byte) (0xff & (hostAddress >> 8)),
+ (byte) (0xff & hostAddress) };
+
+ try {
+ return (Inet4Address) InetAddress.getByAddress(addressBytes);
+ } catch (UnknownHostException e) {
+ throw new AssertionError();
+ }
+ }
+
+ /**
+ * Convert an IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x01020304)
+ *
+ * <p>This conversion can help order IP addresses: considering the ordering
+ * 192.0.2.1 < 192.0.2.2 < ..., resulting ints will follow that ordering if read as unsigned
+ * integers with {@link Integer#toUnsignedLong}.
+ * @param inetAddr is an InetAddress corresponding to the IPv4 address
+ * @return the IP address as integer
+ */
+ public static int inet4AddressToIntHTH(Inet4Address inetAddr)
+ throws IllegalArgumentException {
+ byte [] addr = inetAddr.getAddress();
+ return ((addr[0] & 0xff) << 24) | ((addr[1] & 0xff) << 16)
+ | ((addr[2] & 0xff) << 8) | (addr[3] & 0xff);
+ }
+
+ /**
+ * Convert a IPv4 address from an InetAddress to an integer (1.2.3.4 -> 0x04030201)
+ *
+ * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
+ * which is an unusual convention. Consider {@link #inet4AddressToIntHTH(Inet4Address)} instead.
+ * @param inetAddr is an InetAddress corresponding to the IPv4 address
+ * @return the IP address as integer
+ */
+ public static int inet4AddressToIntHTL(Inet4Address inetAddr) {
+ return Integer.reverseBytes(inet4AddressToIntHTH(inetAddr));
+ }
+
+ /**
+ * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0xffff8000)
+ * @return the IPv4 netmask as an integer
+ */
+ public static int prefixLengthToV4NetmaskIntHTH(int prefixLength)
+ throws IllegalArgumentException {
+ if (prefixLength < 0 || prefixLength > 32) {
+ throw new IllegalArgumentException("Invalid prefix length (0 <= prefix <= 32)");
+ }
+ // (int)a << b is equivalent to a << (b & 0x1f): can't shift by 32 (-1 << 32 == -1)
+ return prefixLength == 0 ? 0 : 0xffffffff << (32 - prefixLength);
+ }
+
+ /**
+ * Convert a network prefix length to an IPv4 netmask integer (prefixLength 17 -> 0x0080ffff).
+ *
+ * <p>This method stores the higher-order IPv4 address bytes in the lower-order int bytes,
+ * which is an unusual convention. Consider {@link #prefixLengthToV4NetmaskIntHTH(int)} instead.
+ * @return the IPv4 netmask as an integer
+ */
+ public static int prefixLengthToV4NetmaskIntHTL(int prefixLength)
+ throws IllegalArgumentException {
+ return Integer.reverseBytes(prefixLengthToV4NetmaskIntHTH(prefixLength));
+ }
+
+ /**
+ * Convert an IPv4 netmask to a prefix length, checking that the netmask is contiguous.
+ * @param netmask as a {@code Inet4Address}.
+ * @return the network prefix length
+ * @throws IllegalArgumentException the specified netmask was not contiguous.
+ * @hide
+ */
+ public static int netmaskToPrefixLength(Inet4Address netmask) {
+ // inetAddressToInt returns an int in *network* byte order.
+ int i = inet4AddressToIntHTH(netmask);
+ int prefixLength = Integer.bitCount(i);
+ int trailingZeros = Integer.numberOfTrailingZeros(i);
+ if (trailingZeros != 32 - prefixLength) {
+ throw new IllegalArgumentException("Non-contiguous netmask: " + Integer.toHexString(i));
+ }
+ return prefixLength;
+ }
+
+ /**
+ * Returns the implicit netmask of an IPv4 address, as was the custom before 1993.
+ */
+ public static int getImplicitNetmask(Inet4Address address) {
+ int firstByte = address.getAddress()[0] & 0xff; // Convert to an unsigned value.
+ if (firstByte < 128) {
+ return 8;
+ } else if (firstByte < 192) {
+ return 16;
+ } else if (firstByte < 224) {
+ return 24;
+ } else {
+ return 32; // Will likely not end well for other reasons.
+ }
+ }
+
+ /**
+ * 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);
+ }
+
+ /**
+ * 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));
+ }
+}
diff --git a/packages/NetworkStack/Android.bp b/packages/NetworkStack/Android.bp
index a2da0a0..9b0d896 100644
--- a/packages/NetworkStack/Android.bp
+++ b/packages/NetworkStack/Android.bp
@@ -21,6 +21,7 @@
installable: true,
srcs: [
"src/**/*.java",
+ ":framework-networkstack-shared-srcs",
":services-networkstack-shared-srcs",
],
static_libs: [
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java b/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java
index 0d298de..8187279 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpLeaseRepository.java
@@ -16,11 +16,11 @@
package android.net.dhcp;
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
-import static android.net.NetworkUtils.prefixLengthToV4NetmaskIntHTH;
import static android.net.dhcp.DhcpLease.EXPIRATION_NEVER;
import static android.net.dhcp.DhcpLease.inet4AddrToString;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTH;
import static com.android.server.util.NetworkStackConstants.IPV4_ADDR_BITS;
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java b/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java
index ce8b7e7..74c4e72 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpPacket.java
@@ -3,8 +3,8 @@
import android.annotation.Nullable;
import android.net.DhcpResults;
import android.net.LinkAddress;
-import android.net.NetworkUtils;
import android.net.metrics.DhcpErrorEvent;
+import android.net.shared.Inet4AddressUtils;
import android.os.Build;
import android.os.SystemProperties;
import android.system.OsConstants;
@@ -1222,13 +1222,13 @@
int prefixLength;
if (mSubnetMask != null) {
try {
- prefixLength = NetworkUtils.netmaskToPrefixLength(mSubnetMask);
+ prefixLength = Inet4AddressUtils.netmaskToPrefixLength(mSubnetMask);
} catch (IllegalArgumentException e) {
// Non-contiguous netmask.
return null;
}
} else {
- prefixLength = NetworkUtils.getImplicitNetmask(ipAddress);
+ prefixLength = Inet4AddressUtils.getImplicitNetmask(ipAddress);
}
DhcpResults results = new DhcpResults();
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java b/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java
index 7b112df..c41c1c9 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpServer.java
@@ -16,8 +16,6 @@
package android.net.dhcp;
-import static android.net.NetworkUtils.getBroadcastAddress;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
import static android.net.TrafficStats.TAG_SYSTEM_DHCP_SERVER;
import static android.net.dhcp.DhcpPacket.DHCP_CLIENT;
import static android.net.dhcp.DhcpPacket.DHCP_HOST_NAME;
@@ -25,6 +23,8 @@
import static android.net.dhcp.DhcpPacket.ENCAP_BOOTP;
import static android.net.dhcp.IDhcpServer.STATUS_INVALID_ARGUMENT;
import static android.net.dhcp.IDhcpServer.STATUS_SUCCESS;
+import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
import static android.system.OsConstants.AF_INET;
import static android.system.OsConstants.IPPROTO_UDP;
import static android.system.OsConstants.SOCK_DGRAM;
diff --git a/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java b/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java
index 868f3be..31ce95b 100644
--- a/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java
+++ b/packages/NetworkStack/src/android/net/dhcp/DhcpServingParams.java
@@ -16,8 +16,8 @@
package android.net.dhcp;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
import static com.android.server.util.NetworkStackConstants.INFINITE_LEASE;
import static com.android.server.util.NetworkStackConstants.IPV4_MAX_MTU;
@@ -29,7 +29,7 @@
import android.annotation.Nullable;
import android.net.IpPrefix;
import android.net.LinkAddress;
-import android.net.NetworkUtils;
+import android.net.shared.Inet4AddressUtils;
import android.util.ArraySet;
import java.net.Inet4Address;
@@ -164,7 +164,8 @@
*/
@NonNull
public Inet4Address getBroadcastAddress() {
- return NetworkUtils.getBroadcastAddress(getServerInet4Addr(), serverAddr.getPrefixLength());
+ return Inet4AddressUtils.getBroadcastAddress(
+ getServerInet4Addr(), serverAddr.getPrefixLength());
}
/**
diff --git a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java
index a592809..38f45f7 100644
--- a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java
+++ b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpPacketTest.java
@@ -16,9 +16,27 @@
package android.net.dhcp;
-import static android.net.NetworkUtils.getBroadcastAddress;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
-import static android.net.dhcp.DhcpPacket.*;
+import static android.net.dhcp.DhcpPacket.DHCP_BROADCAST_ADDRESS;
+import static android.net.dhcp.DhcpPacket.DHCP_DNS_SERVER;
+import static android.net.dhcp.DhcpPacket.DHCP_DOMAIN_NAME;
+import static android.net.dhcp.DhcpPacket.DHCP_LEASE_TIME;
+import static android.net.dhcp.DhcpPacket.DHCP_MESSAGE_TYPE_ACK;
+import static android.net.dhcp.DhcpPacket.DHCP_MESSAGE_TYPE_OFFER;
+import static android.net.dhcp.DhcpPacket.DHCP_MTU;
+import static android.net.dhcp.DhcpPacket.DHCP_REBINDING_TIME;
+import static android.net.dhcp.DhcpPacket.DHCP_RENEWAL_TIME;
+import static android.net.dhcp.DhcpPacket.DHCP_ROUTER;
+import static android.net.dhcp.DhcpPacket.DHCP_SUBNET_MASK;
+import static android.net.dhcp.DhcpPacket.DHCP_VENDOR_INFO;
+import static android.net.dhcp.DhcpPacket.ENCAP_BOOTP;
+import static android.net.dhcp.DhcpPacket.ENCAP_L2;
+import static android.net.dhcp.DhcpPacket.ENCAP_L3;
+import static android.net.dhcp.DhcpPacket.INADDR_ANY;
+import static android.net.dhcp.DhcpPacket.INFINITE_LEASE;
+import static android.net.dhcp.DhcpPacket.ParseException;
+import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
+
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
@@ -30,11 +48,15 @@
import android.net.LinkAddress;
import android.net.NetworkUtils;
import android.net.metrics.DhcpErrorEvent;
-import android.support.test.runner.AndroidJUnit4;
import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
import com.android.internal.util.HexDump;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
import java.io.ByteArrayOutputStream;
import java.net.Inet4Address;
import java.nio.ByteBuffer;
@@ -44,10 +66,6 @@
import java.util.Collections;
import java.util.Random;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
@RunWith(AndroidJUnit4.class)
@SmallTest
public class DhcpPacketTest {
diff --git a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java
index 3ca0564..1004382 100644
--- a/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java
+++ b/packages/NetworkStack/tests/src/android/net/dhcp/DhcpServingParamsTest.java
@@ -17,8 +17,8 @@
package android.net.dhcp;
import static android.net.InetAddresses.parseNumericAddress;
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
import static android.net.dhcp.DhcpServingParams.MTU_UNSET;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertFalse;
@@ -27,8 +27,8 @@
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.net.LinkAddress;
-import android.net.NetworkUtils;
import android.net.dhcp.DhcpServingParams.InvalidParameterException;
+import android.net.shared.Inet4AddressUtils;
import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
@@ -200,7 +200,7 @@
}
private static int[] toIntArray(Collection<Inet4Address> addrs) {
- return addrs.stream().mapToInt(NetworkUtils::inet4AddressToIntHTH).toArray();
+ return addrs.stream().mapToInt(Inet4AddressUtils::inet4AddressToIntHTH).toArray();
}
private static <T> void assertContains(@NonNull Set<T> set, @NonNull Set<T> subset) {
diff --git a/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java b/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java
index e99dd4f..bbecc63 100644
--- a/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java
+++ b/services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java
@@ -16,6 +16,9 @@
package com.android.server.net.ipmemorystore;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.ContentValues;
@@ -27,7 +30,6 @@
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQuery;
-import android.net.NetworkUtils;
import android.net.ipmemorystore.NetworkAttributes;
import android.net.ipmemorystore.Status;
import android.util.Log;
@@ -200,7 +202,7 @@
if (null == attributes) return values;
if (null != attributes.assignedV4Address) {
values.put(NetworkAttributesContract.COLNAME_ASSIGNEDV4ADDRESS,
- NetworkUtils.inet4AddressToIntHTH(attributes.assignedV4Address));
+ inet4AddressToIntHTH(attributes.assignedV4Address));
}
if (null != attributes.groupHint) {
values.put(NetworkAttributesContract.COLNAME_GROUPHINT, attributes.groupHint);
@@ -254,7 +256,7 @@
getBlob(cursor, NetworkAttributesContract.COLNAME_DNSADDRESSES);
final int mtu = getInt(cursor, NetworkAttributesContract.COLNAME_MTU, -1);
if (0 != assignedV4AddressInt) {
- builder.setAssignedV4Address(NetworkUtils.intToInet4AddressHTH(assignedV4AddressInt));
+ builder.setAssignedV4Address(intToInet4AddressHTH(assignedV4AddressInt));
}
builder.setGroupHint(groupHint);
if (null != dnsAddressesBlob) {
diff --git a/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java b/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java
index f068c3a..1fe2328 100644
--- a/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java
+++ b/services/net/java/android/net/dhcp/DhcpServingParamsParcelExt.java
@@ -16,7 +16,7 @@
package android.net.dhcp;
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
import android.annotation.NonNull;
import android.net.LinkAddress;
diff --git a/tests/net/java/android/net/NetworkUtilsTest.java b/tests/net/java/android/net/NetworkUtilsTest.java
index 3452819..ba6e0f2 100644
--- a/tests/net/java/android/net/NetworkUtilsTest.java
+++ b/tests/net/java/android/net/NetworkUtilsTest.java
@@ -16,161 +16,19 @@
package android.net;
-import static android.net.NetworkUtils.getImplicitNetmask;
-import static android.net.NetworkUtils.inet4AddressToIntHTH;
-import static android.net.NetworkUtils.inet4AddressToIntHTL;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
-import static android.net.NetworkUtils.intToInet4AddressHTL;
-import static android.net.NetworkUtils.netmaskToPrefixLength;
-import static android.net.NetworkUtils.prefixLengthToV4NetmaskIntHTH;
-import static android.net.NetworkUtils.prefixLengthToV4NetmaskIntHTL;
-import static android.net.NetworkUtils.getBroadcastAddress;
-import static android.net.NetworkUtils.getPrefixMaskAsInet4Address;
-
import static junit.framework.Assert.assertEquals;
-import static org.junit.Assert.fail;
-
import android.support.test.runner.AndroidJUnit4;
-import java.math.BigInteger;
-import java.net.Inet4Address;
-import java.net.InetAddress;
-import java.util.TreeSet;
-
import org.junit.Test;
import org.junit.runner.RunWith;
+import java.math.BigInteger;
+import java.util.TreeSet;
+
@RunWith(AndroidJUnit4.class)
@android.support.test.filters.SmallTest
public class NetworkUtilsTest {
-
- private InetAddress Address(String addr) {
- return InetAddress.parseNumericAddress(addr);
- }
-
- private Inet4Address IPv4Address(String addr) {
- return (Inet4Address) Address(addr);
- }
-
- @Test
- public void testGetImplicitNetmask() {
- assertEquals(8, getImplicitNetmask(IPv4Address("4.2.2.2")));
- assertEquals(8, getImplicitNetmask(IPv4Address("10.5.6.7")));
- assertEquals(16, getImplicitNetmask(IPv4Address("173.194.72.105")));
- assertEquals(16, getImplicitNetmask(IPv4Address("172.23.68.145")));
- assertEquals(24, getImplicitNetmask(IPv4Address("192.0.2.1")));
- assertEquals(24, getImplicitNetmask(IPv4Address("192.168.5.1")));
- assertEquals(32, getImplicitNetmask(IPv4Address("224.0.0.1")));
- assertEquals(32, getImplicitNetmask(IPv4Address("255.6.7.8")));
- }
-
- private void assertInvalidNetworkMask(Inet4Address addr) {
- try {
- netmaskToPrefixLength(addr);
- fail("Invalid netmask " + addr.getHostAddress() + " did not cause exception");
- } catch (IllegalArgumentException expected) {
- }
- }
-
- @Test
- public void testInet4AddressToIntHTL() {
- assertEquals(0, inet4AddressToIntHTL(IPv4Address("0.0.0.0")));
- assertEquals(0x000080ff, inet4AddressToIntHTL(IPv4Address("255.128.0.0")));
- assertEquals(0x0080ff0a, inet4AddressToIntHTL(IPv4Address("10.255.128.0")));
- assertEquals(0x00feff0a, inet4AddressToIntHTL(IPv4Address("10.255.254.0")));
- assertEquals(0xfeffa8c0, inet4AddressToIntHTL(IPv4Address("192.168.255.254")));
- assertEquals(0xffffa8c0, inet4AddressToIntHTL(IPv4Address("192.168.255.255")));
- }
-
- @Test
- public void testIntToInet4AddressHTL() {
- assertEquals(IPv4Address("0.0.0.0"), intToInet4AddressHTL(0));
- assertEquals(IPv4Address("255.128.0.0"), intToInet4AddressHTL(0x000080ff));
- assertEquals(IPv4Address("10.255.128.0"), intToInet4AddressHTL(0x0080ff0a));
- assertEquals(IPv4Address("10.255.254.0"), intToInet4AddressHTL(0x00feff0a));
- assertEquals(IPv4Address("192.168.255.254"), intToInet4AddressHTL(0xfeffa8c0));
- assertEquals(IPv4Address("192.168.255.255"), intToInet4AddressHTL(0xffffa8c0));
- }
-
- @Test
- public void testInet4AddressToIntHTH() {
- assertEquals(0, inet4AddressToIntHTH(IPv4Address("0.0.0.0")));
- assertEquals(0xff800000, inet4AddressToIntHTH(IPv4Address("255.128.0.0")));
- assertEquals(0x0aff8000, inet4AddressToIntHTH(IPv4Address("10.255.128.0")));
- assertEquals(0x0afffe00, inet4AddressToIntHTH(IPv4Address("10.255.254.0")));
- assertEquals(0xc0a8fffe, inet4AddressToIntHTH(IPv4Address("192.168.255.254")));
- assertEquals(0xc0a8ffff, inet4AddressToIntHTH(IPv4Address("192.168.255.255")));
- }
-
- @Test
- public void testIntToInet4AddressHTH() {
- assertEquals(IPv4Address("0.0.0.0"), intToInet4AddressHTH(0));
- assertEquals(IPv4Address("255.128.0.0"), intToInet4AddressHTH(0xff800000));
- assertEquals(IPv4Address("10.255.128.0"), intToInet4AddressHTH(0x0aff8000));
- assertEquals(IPv4Address("10.255.254.0"), intToInet4AddressHTH(0x0afffe00));
- assertEquals(IPv4Address("192.168.255.254"), intToInet4AddressHTH(0xc0a8fffe));
- assertEquals(IPv4Address("192.168.255.255"), intToInet4AddressHTH(0xc0a8ffff));
- }
-
- @Test
- public void testNetmaskToPrefixLength() {
- assertEquals(0, netmaskToPrefixLength(IPv4Address("0.0.0.0")));
- assertEquals(9, netmaskToPrefixLength(IPv4Address("255.128.0.0")));
- assertEquals(17, netmaskToPrefixLength(IPv4Address("255.255.128.0")));
- assertEquals(23, netmaskToPrefixLength(IPv4Address("255.255.254.0")));
- assertEquals(31, netmaskToPrefixLength(IPv4Address("255.255.255.254")));
- assertEquals(32, netmaskToPrefixLength(IPv4Address("255.255.255.255")));
-
- assertInvalidNetworkMask(IPv4Address("0.0.0.1"));
- assertInvalidNetworkMask(IPv4Address("255.255.255.253"));
- assertInvalidNetworkMask(IPv4Address("255.255.0.255"));
- }
-
- @Test
- public void testPrefixLengthToV4NetmaskIntHTL() {
- assertEquals(0, prefixLengthToV4NetmaskIntHTL(0));
- assertEquals(0x000080ff /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTL(9));
- assertEquals(0x0080ffff /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTL(17));
- assertEquals(0x00feffff /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTL(23));
- assertEquals(0xfeffffff /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTL(31));
- assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTL(32));
- }
-
- @Test
- public void testPrefixLengthToV4NetmaskIntHTH() {
- assertEquals(0, prefixLengthToV4NetmaskIntHTH(0));
- assertEquals(0xff800000 /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTH(9));
- assertEquals(0xffff8000 /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTH(17));
- assertEquals(0xfffffe00 /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTH(23));
- assertEquals(0xfffffffe /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTH(31));
- assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTH(32));
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testPrefixLengthToV4NetmaskIntHTH_NegativeLength() {
- prefixLengthToV4NetmaskIntHTH(-1);
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testPrefixLengthToV4NetmaskIntHTH_LengthTooLarge() {
- prefixLengthToV4NetmaskIntHTH(33);
- }
-
- private void checkAddressMasking(String expectedAddr, String addr, int prefixLength) {
- final int prefix = prefixLengthToV4NetmaskIntHTH(prefixLength);
- final int addrInt = inet4AddressToIntHTH(IPv4Address(addr));
- assertEquals(IPv4Address(expectedAddr), intToInet4AddressHTH(prefix & addrInt));
- }
-
- @Test
- public void testPrefixLengthToV4NetmaskIntHTH_MaskAddr() {
- checkAddressMasking("192.168.0.0", "192.168.128.1", 16);
- checkAddressMasking("255.240.0.0", "255.255.255.255", 12);
- checkAddressMasking("255.255.255.255", "255.255.255.255", 32);
- checkAddressMasking("0.0.0.0", "255.255.255.255", 0);
- }
-
@Test
public void testRoutedIPv4AddressCount() {
final TreeSet<IpPrefix> set = new TreeSet<>(IpPrefix.lengthComparator());
@@ -267,44 +125,4 @@
assertEquals(BigInteger.valueOf(7l - 4 + 4 + 16 + 65536),
NetworkUtils.routedIPv6AddressCount(set));
}
-
- @Test
- public void testGetPrefixMaskAsAddress() {
- assertEquals("255.255.240.0", getPrefixMaskAsInet4Address(20).getHostAddress());
- assertEquals("255.0.0.0", getPrefixMaskAsInet4Address(8).getHostAddress());
- assertEquals("0.0.0.0", getPrefixMaskAsInet4Address(0).getHostAddress());
- assertEquals("255.255.255.255", getPrefixMaskAsInet4Address(32).getHostAddress());
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testGetPrefixMaskAsAddress_PrefixTooLarge() {
- getPrefixMaskAsInet4Address(33);
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testGetPrefixMaskAsAddress_NegativePrefix() {
- getPrefixMaskAsInet4Address(-1);
- }
-
- @Test
- public void testGetBroadcastAddress() {
- assertEquals("192.168.15.255",
- getBroadcastAddress(IPv4Address("192.168.0.123"), 20).getHostAddress());
- assertEquals("192.255.255.255",
- getBroadcastAddress(IPv4Address("192.168.0.123"), 8).getHostAddress());
- assertEquals("192.168.0.123",
- getBroadcastAddress(IPv4Address("192.168.0.123"), 32).getHostAddress());
- assertEquals("255.255.255.255",
- getBroadcastAddress(IPv4Address("192.168.0.123"), 0).getHostAddress());
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testGetBroadcastAddress_PrefixTooLarge() {
- getBroadcastAddress(IPv4Address("192.168.0.123"), 33);
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testGetBroadcastAddress_NegativePrefix() {
- getBroadcastAddress(IPv4Address("192.168.0.123"), -1);
- }
}
diff --git a/tests/net/java/android/net/ip/IpServerTest.java b/tests/net/java/android/net/ip/IpServerTest.java
index 80aac04..f7542a7 100644
--- a/tests/net/java/android/net/ip/IpServerTest.java
+++ b/tests/net/java/android/net/ip/IpServerTest.java
@@ -22,11 +22,11 @@
import static android.net.ConnectivityManager.TETHER_ERROR_ENABLE_NAT_ERROR;
import static android.net.ConnectivityManager.TETHER_ERROR_NO_ERROR;
import static android.net.ConnectivityManager.TETHER_ERROR_TETHER_IFACE_ERROR;
-import static android.net.NetworkUtils.intToInet4AddressHTH;
import static android.net.dhcp.IDhcpServer.STATUS_SUCCESS;
import static android.net.ip.IpServer.STATE_AVAILABLE;
import static android.net.ip.IpServer.STATE_TETHERED;
import static android.net.ip.IpServer.STATE_UNAVAILABLE;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
diff --git a/tests/net/java/android/net/shared/Inet4AddressUtilsTest.java b/tests/net/java/android/net/shared/Inet4AddressUtilsTest.java
new file mode 100644
index 0000000..6da8514
--- /dev/null
+++ b/tests/net/java/android/net/shared/Inet4AddressUtilsTest.java
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2019 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.shared;
+
+import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
+import static android.net.shared.Inet4AddressUtils.getImplicitNetmask;
+import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
+import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTL;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
+import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTL;
+import static android.net.shared.Inet4AddressUtils.netmaskToPrefixLength;
+import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTH;
+import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTL;
+
+import static junit.framework.Assert.assertEquals;
+
+import static org.junit.Assert.fail;
+
+import android.net.InetAddresses;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class Inet4AddressUtilsTest {
+
+ @Test
+ public void testInet4AddressToIntHTL() {
+ assertEquals(0, inet4AddressToIntHTL(ipv4Address("0.0.0.0")));
+ assertEquals(0x000080ff, inet4AddressToIntHTL(ipv4Address("255.128.0.0")));
+ assertEquals(0x0080ff0a, inet4AddressToIntHTL(ipv4Address("10.255.128.0")));
+ assertEquals(0x00feff0a, inet4AddressToIntHTL(ipv4Address("10.255.254.0")));
+ assertEquals(0xfeffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.254")));
+ assertEquals(0xffffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.255")));
+ }
+
+ @Test
+ public void testIntToInet4AddressHTL() {
+ assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTL(0));
+ assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTL(0x000080ff));
+ assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTL(0x0080ff0a));
+ assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTL(0x00feff0a));
+ assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTL(0xfeffa8c0));
+ assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTL(0xffffa8c0));
+ }
+
+ @Test
+ public void testInet4AddressToIntHTH() {
+ assertEquals(0, inet4AddressToIntHTH(ipv4Address("0.0.0.0")));
+ assertEquals(0xff800000, inet4AddressToIntHTH(ipv4Address("255.128.0.0")));
+ assertEquals(0x0aff8000, inet4AddressToIntHTH(ipv4Address("10.255.128.0")));
+ assertEquals(0x0afffe00, inet4AddressToIntHTH(ipv4Address("10.255.254.0")));
+ assertEquals(0xc0a8fffe, inet4AddressToIntHTH(ipv4Address("192.168.255.254")));
+ assertEquals(0xc0a8ffff, inet4AddressToIntHTH(ipv4Address("192.168.255.255")));
+ }
+
+ @Test
+ public void testIntToInet4AddressHTH() {
+ assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTH(0));
+ assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTH(0xff800000));
+ assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTH(0x0aff8000));
+ assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTH(0x0afffe00));
+ assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTH(0xc0a8fffe));
+ assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTH(0xc0a8ffff));
+ }
+
+
+ @Test
+ public void testPrefixLengthToV4NetmaskIntHTL() {
+ assertEquals(0, prefixLengthToV4NetmaskIntHTL(0));
+ assertEquals(0x000080ff /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTL(9));
+ assertEquals(0x0080ffff /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTL(17));
+ assertEquals(0x00feffff /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTL(23));
+ assertEquals(0xfeffffff /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTL(31));
+ assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTL(32));
+ }
+
+ @Test
+ public void testPrefixLengthToV4NetmaskIntHTH() {
+ assertEquals(0, prefixLengthToV4NetmaskIntHTH(0));
+ assertEquals(0xff800000 /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTH(9));
+ assertEquals(0xffff8000 /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTH(17));
+ assertEquals(0xfffffe00 /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTH(23));
+ assertEquals(0xfffffffe /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTH(31));
+ assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTH(32));
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void testPrefixLengthToV4NetmaskIntHTH_NegativeLength() {
+ prefixLengthToV4NetmaskIntHTH(-1);
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void testPrefixLengthToV4NetmaskIntHTH_LengthTooLarge() {
+ prefixLengthToV4NetmaskIntHTH(33);
+ }
+
+ private void checkAddressMasking(String expectedAddr, String addr, int prefixLength) {
+ final int prefix = prefixLengthToV4NetmaskIntHTH(prefixLength);
+ final int addrInt = inet4AddressToIntHTH(ipv4Address(addr));
+ assertEquals(ipv4Address(expectedAddr), intToInet4AddressHTH(prefix & addrInt));
+ }
+
+ @Test
+ public void testPrefixLengthToV4NetmaskIntHTH_MaskAddr() {
+ checkAddressMasking("192.168.0.0", "192.168.128.1", 16);
+ checkAddressMasking("255.240.0.0", "255.255.255.255", 12);
+ checkAddressMasking("255.255.255.255", "255.255.255.255", 32);
+ checkAddressMasking("0.0.0.0", "255.255.255.255", 0);
+ }
+
+ @Test
+ public void testGetImplicitNetmask() {
+ assertEquals(8, getImplicitNetmask(ipv4Address("4.2.2.2")));
+ assertEquals(8, getImplicitNetmask(ipv4Address("10.5.6.7")));
+ assertEquals(16, getImplicitNetmask(ipv4Address("173.194.72.105")));
+ assertEquals(16, getImplicitNetmask(ipv4Address("172.23.68.145")));
+ assertEquals(24, getImplicitNetmask(ipv4Address("192.0.2.1")));
+ assertEquals(24, getImplicitNetmask(ipv4Address("192.168.5.1")));
+ assertEquals(32, getImplicitNetmask(ipv4Address("224.0.0.1")));
+ assertEquals(32, getImplicitNetmask(ipv4Address("255.6.7.8")));
+ }
+
+ private void assertInvalidNetworkMask(Inet4Address addr) {
+ try {
+ netmaskToPrefixLength(addr);
+ fail("Invalid netmask " + addr.getHostAddress() + " did not cause exception");
+ } catch (IllegalArgumentException expected) {
+ }
+ }
+
+ @Test
+ public void testNetmaskToPrefixLength() {
+ assertEquals(0, netmaskToPrefixLength(ipv4Address("0.0.0.0")));
+ assertEquals(9, netmaskToPrefixLength(ipv4Address("255.128.0.0")));
+ assertEquals(17, netmaskToPrefixLength(ipv4Address("255.255.128.0")));
+ assertEquals(23, netmaskToPrefixLength(ipv4Address("255.255.254.0")));
+ assertEquals(31, netmaskToPrefixLength(ipv4Address("255.255.255.254")));
+ assertEquals(32, netmaskToPrefixLength(ipv4Address("255.255.255.255")));
+
+ assertInvalidNetworkMask(ipv4Address("0.0.0.1"));
+ assertInvalidNetworkMask(ipv4Address("255.255.255.253"));
+ assertInvalidNetworkMask(ipv4Address("255.255.0.255"));
+ }
+
+ @Test
+ public void testGetPrefixMaskAsAddress() {
+ assertEquals("255.255.240.0", getPrefixMaskAsInet4Address(20).getHostAddress());
+ assertEquals("255.0.0.0", getPrefixMaskAsInet4Address(8).getHostAddress());
+ assertEquals("0.0.0.0", getPrefixMaskAsInet4Address(0).getHostAddress());
+ assertEquals("255.255.255.255", getPrefixMaskAsInet4Address(32).getHostAddress());
+ }
+
+ @Test
+ public void testGetBroadcastAddress() {
+ assertEquals("192.168.15.255",
+ getBroadcastAddress(ipv4Address("192.168.0.123"), 20).getHostAddress());
+ assertEquals("192.255.255.255",
+ getBroadcastAddress(ipv4Address("192.168.0.123"), 8).getHostAddress());
+ assertEquals("192.168.0.123",
+ getBroadcastAddress(ipv4Address("192.168.0.123"), 32).getHostAddress());
+ assertEquals("255.255.255.255",
+ getBroadcastAddress(ipv4Address("192.168.0.123"), 0).getHostAddress());
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void testGetBroadcastAddress_PrefixTooLarge() {
+ getBroadcastAddress(ipv4Address("192.168.0.123"), 33);
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void testGetBroadcastAddress_NegativePrefix() {
+ getBroadcastAddress(ipv4Address("192.168.0.123"), -1);
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void testGetPrefixMaskAsAddress_PrefixTooLarge() {
+ getPrefixMaskAsInet4Address(33);
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void testGetPrefixMaskAsAddress_NegativePrefix() {
+ getPrefixMaskAsInet4Address(-1);
+ }
+
+ private Inet4Address ipv4Address(String addr) {
+ return (Inet4Address) InetAddresses.parseNumericAddress(addr);
+ }
+}