summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Android.bp1
-rw-r--r--core/java/android/net/KeepalivePacketData.java3
-rw-r--r--core/java/android/net/NattKeepalivePacketData.java3
-rw-r--r--core/java/android/net/util/IpUtils.java151
-rw-r--r--packages/Tethering/tests/privileged/src/android/net/ip/DadProxyTest.java2
-rw-r--r--services/core/java/com/android/server/connectivity/KeepaliveTracker.java2
-rw-r--r--services/net/java/android/net/TcpKeepalivePacketData.java3
-rw-r--r--tests/net/java/android/net/util/IpUtilsTest.java166
-rw-r--r--wifi/jarjar-rules.txt1
9 files changed, 8 insertions, 324 deletions
diff --git a/Android.bp b/Android.bp
index 92f79d1fbef4..8e17f5524a38 100644
--- a/Android.bp
+++ b/Android.bp
@@ -769,7 +769,6 @@ filegroup {
name: "framework-services-net-module-wifi-shared-srcs",
srcs: [
"core/java/android/net/DhcpResults.java",
- "core/java/android/net/util/IpUtils.java",
"core/java/android/util/LocalLog.java",
],
}
diff --git a/core/java/android/net/KeepalivePacketData.java b/core/java/android/net/KeepalivePacketData.java
index e21cb44f72d8..5877f1f4e269 100644
--- a/core/java/android/net/KeepalivePacketData.java
+++ b/core/java/android/net/KeepalivePacketData.java
@@ -22,9 +22,10 @@ import static android.net.InvalidPacketException.ERROR_INVALID_PORT;
import android.annotation.IntRange;
import android.annotation.NonNull;
import android.annotation.SystemApi;
-import android.net.util.IpUtils;
import android.util.Log;
+import com.android.net.module.util.IpUtils;
+
import java.net.InetAddress;
/**
diff --git a/core/java/android/net/NattKeepalivePacketData.java b/core/java/android/net/NattKeepalivePacketData.java
index 22288b6205d7..c4f8fc281f25 100644
--- a/core/java/android/net/NattKeepalivePacketData.java
+++ b/core/java/android/net/NattKeepalivePacketData.java
@@ -22,11 +22,12 @@ import static android.net.InvalidPacketException.ERROR_INVALID_PORT;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SystemApi;
-import android.net.util.IpUtils;
import android.os.Parcel;
import android.os.Parcelable;
import android.system.OsConstants;
+import com.android.net.module.util.IpUtils;
+
import java.net.Inet4Address;
import java.net.InetAddress;
import java.nio.ByteBuffer;
diff --git a/core/java/android/net/util/IpUtils.java b/core/java/android/net/util/IpUtils.java
deleted file mode 100644
index e037c4035aca..000000000000
--- a/core/java/android/net/util/IpUtils.java
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * Copyright (C) 2015 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.util;
-
-import java.net.Inet6Address;
-import java.net.InetAddress;
-import java.nio.BufferOverflowException;
-import java.nio.BufferUnderflowException;
-import java.nio.ByteBuffer;
-import java.nio.ShortBuffer;
-
-import static android.system.OsConstants.IPPROTO_TCP;
-import static android.system.OsConstants.IPPROTO_UDP;
-
-/**
- * @hide
- */
-public class IpUtils {
- /**
- * Converts a signed short value to an unsigned int value. Needed
- * because Java does not have unsigned types.
- */
- private static int intAbs(short v) {
- return v & 0xFFFF;
- }
-
- /**
- * Performs an IP checksum (used in IP header and across UDP
- * payload) on the specified portion of a ByteBuffer. The seed
- * allows the checksum to commence with a specified value.
- */
- private static int checksum(ByteBuffer buf, int seed, int start, int end) {
- int sum = seed;
- final int bufPosition = buf.position();
-
- // set position of original ByteBuffer, so that the ShortBuffer
- // will be correctly initialized
- buf.position(start);
- ShortBuffer shortBuf = buf.asShortBuffer();
-
- // re-set ByteBuffer position
- buf.position(bufPosition);
-
- final int numShorts = (end - start) / 2;
- for (int i = 0; i < numShorts; i++) {
- sum += intAbs(shortBuf.get(i));
- }
- start += numShorts * 2;
-
- // see if a singleton byte remains
- if (end != start) {
- short b = buf.get(start);
-
- // make it unsigned
- if (b < 0) {
- b += 256;
- }
-
- sum += b * 256;
- }
-
- sum = ((sum >> 16) & 0xFFFF) + (sum & 0xFFFF);
- sum = ((sum + ((sum >> 16) & 0xFFFF)) & 0xFFFF);
- int negated = ~sum;
- return intAbs((short) negated);
- }
-
- private static int pseudoChecksumIPv4(
- ByteBuffer buf, int headerOffset, int protocol, int transportLen) {
- int partial = protocol + transportLen;
- partial += intAbs(buf.getShort(headerOffset + 12));
- partial += intAbs(buf.getShort(headerOffset + 14));
- partial += intAbs(buf.getShort(headerOffset + 16));
- partial += intAbs(buf.getShort(headerOffset + 18));
- return partial;
- }
-
- private static int pseudoChecksumIPv6(
- ByteBuffer buf, int headerOffset, int protocol, int transportLen) {
- int partial = protocol + transportLen;
- for (int offset = 8; offset < 40; offset += 2) {
- partial += intAbs(buf.getShort(headerOffset + offset));
- }
- return partial;
- }
-
- private static byte ipversion(ByteBuffer buf, int headerOffset) {
- return (byte) ((buf.get(headerOffset) & (byte) 0xf0) >> 4);
- }
-
- public static short ipChecksum(ByteBuffer buf, int headerOffset) {
- byte ihl = (byte) (buf.get(headerOffset) & 0x0f);
- return (short) checksum(buf, 0, headerOffset, headerOffset + ihl * 4);
- }
-
- private static short transportChecksum(ByteBuffer buf, int protocol,
- int ipOffset, int transportOffset, int transportLen) {
- if (transportLen < 0) {
- throw new IllegalArgumentException("Transport length < 0: " + transportLen);
- }
- int sum;
- byte ver = ipversion(buf, ipOffset);
- if (ver == 4) {
- sum = pseudoChecksumIPv4(buf, ipOffset, protocol, transportLen);
- } else if (ver == 6) {
- sum = pseudoChecksumIPv6(buf, ipOffset, protocol, transportLen);
- } else {
- throw new UnsupportedOperationException("Checksum must be IPv4 or IPv6");
- }
-
- sum = checksum(buf, sum, transportOffset, transportOffset + transportLen);
- if (protocol == IPPROTO_UDP && sum == 0) {
- sum = (short) 0xffff;
- }
- return (short) sum;
- }
-
- public static short udpChecksum(ByteBuffer buf, int ipOffset, int transportOffset) {
- int transportLen = intAbs(buf.getShort(transportOffset + 4));
- return transportChecksum(buf, IPPROTO_UDP, ipOffset, transportOffset, transportLen);
- }
-
- public static short tcpChecksum(ByteBuffer buf, int ipOffset, int transportOffset,
- int transportLen) {
- return transportChecksum(buf, IPPROTO_TCP, ipOffset, transportOffset, transportLen);
- }
-
- public static String addressAndPortToString(InetAddress address, int port) {
- return String.format(
- (address instanceof Inet6Address) ? "[%s]:%d" : "%s:%d",
- address.getHostAddress(), port);
- }
-
- public static boolean isValidUdpOrTcpPort(int port) {
- return port > 0 && port < 65536;
- }
-}
diff --git a/packages/Tethering/tests/privileged/src/android/net/ip/DadProxyTest.java b/packages/Tethering/tests/privileged/src/android/net/ip/DadProxyTest.java
index 747d3e803026..95e36fa18f42 100644
--- a/packages/Tethering/tests/privileged/src/android/net/ip/DadProxyTest.java
+++ b/packages/Tethering/tests/privileged/src/android/net/ip/DadProxyTest.java
@@ -33,7 +33,6 @@ import android.net.MacAddress;
import android.net.TestNetworkInterface;
import android.net.TestNetworkManager;
import android.net.util.InterfaceParams;
-import android.net.util.IpUtils;
import android.net.util.TetheringUtils;
import android.os.Handler;
import android.os.HandlerThread;
@@ -46,6 +45,7 @@ import androidx.test.InstrumentationRegistry;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
+import com.android.net.module.util.IpUtils;
import com.android.testutils.TapPacketReader;
import org.junit.After;
diff --git a/services/core/java/com/android/server/connectivity/KeepaliveTracker.java b/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
index 01fa9e755bd6..8625a6f470c5 100644
--- a/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
+++ b/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
@@ -47,7 +47,6 @@ import android.net.NetworkAgent;
import android.net.NetworkUtils;
import android.net.SocketKeepalive.InvalidSocketException;
import android.net.TcpKeepalivePacketData;
-import android.net.util.IpUtils;
import android.net.util.KeepaliveUtils;
import android.os.Binder;
import android.os.Handler;
@@ -63,6 +62,7 @@ import android.util.Pair;
import com.android.internal.R;
import com.android.internal.util.HexDump;
import com.android.internal.util.IndentingPrintWriter;
+import com.android.net.module.util.IpUtils;
import java.io.FileDescriptor;
import java.net.InetAddress;
diff --git a/services/net/java/android/net/TcpKeepalivePacketData.java b/services/net/java/android/net/TcpKeepalivePacketData.java
index c0c386b3046e..4875c7cc4263 100644
--- a/services/net/java/android/net/TcpKeepalivePacketData.java
+++ b/services/net/java/android/net/TcpKeepalivePacketData.java
@@ -19,11 +19,12 @@ import static android.net.SocketKeepalive.ERROR_INVALID_IP_ADDRESS;
import android.annotation.NonNull;
import android.annotation.Nullable;
-import android.net.util.IpUtils;
import android.os.Parcel;
import android.os.Parcelable;
import android.system.OsConstants;
+import com.android.net.module.util.IpUtils;
+
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
diff --git a/tests/net/java/android/net/util/IpUtilsTest.java b/tests/net/java/android/net/util/IpUtilsTest.java
deleted file mode 100644
index 193d85d0013a..000000000000
--- a/tests/net/java/android/net/util/IpUtilsTest.java
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Copyright (C) 2015 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.util;
-
-import static org.junit.Assert.assertEquals;
-
-import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.nio.ByteBuffer;
-
-@RunWith(AndroidJUnit4.class)
-@SmallTest
-public class IpUtilsTest {
-
- private static final int IPV4_HEADER_LENGTH = 20;
- private static final int IPV6_HEADER_LENGTH = 40;
- private static final int TCP_HEADER_LENGTH = 20;
- private static final int UDP_HEADER_LENGTH = 8;
- private static final int IP_CHECKSUM_OFFSET = 10;
- private static final int TCP_CHECKSUM_OFFSET = 16;
- private static final int UDP_CHECKSUM_OFFSET = 6;
-
- private int getUnsignedByte(ByteBuffer buf, int offset) {
- return buf.get(offset) & 0xff;
- }
-
- private int getChecksum(ByteBuffer buf, int offset) {
- return getUnsignedByte(buf, offset) * 256 + getUnsignedByte(buf, offset + 1);
- }
-
- private void assertChecksumEquals(int expected, short actual) {
- assertEquals(Integer.toHexString(expected), Integer.toHexString(actual & 0xffff));
- }
-
- // Generate test packets using Python code like this::
- //
- // from scapy import all as scapy
- //
- // def JavaPacketDefinition(bytes):
- // out = " ByteBuffer packet = ByteBuffer.wrap(new byte[] {\n "
- // for i in xrange(len(bytes)):
- // out += "(byte) 0x%02x" % ord(bytes[i])
- // if i < len(bytes) - 1:
- // if i % 4 == 3:
- // out += ",\n "
- // else:
- // out += ", "
- // out += "\n });"
- // return out
- //
- // packet = (scapy.IPv6(src="2001:db8::1", dst="2001:db8::2") /
- // scapy.UDP(sport=12345, dport=7) /
- // "hello")
- // print JavaPacketDefinition(str(packet))
-
- @Test
- public void testIpv6TcpChecksum() throws Exception {
- // packet = (scapy.IPv6(src="2001:db8::1", dst="2001:db8::2", tc=0x80) /
- // scapy.TCP(sport=12345, dport=7,
- // seq=1692871236, ack=128376451, flags=16,
- // window=32768) /
- // "hello, world")
- ByteBuffer packet = ByteBuffer.wrap(new byte[] {
- (byte) 0x68, (byte) 0x00, (byte) 0x00, (byte) 0x00,
- (byte) 0x00, (byte) 0x20, (byte) 0x06, (byte) 0x40,
- (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
- (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
- (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
- (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
- (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
- (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
- (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
- (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x02,
- (byte) 0x30, (byte) 0x39, (byte) 0x00, (byte) 0x07,
- (byte) 0x64, (byte) 0xe7, (byte) 0x2a, (byte) 0x44,
- (byte) 0x07, (byte) 0xa6, (byte) 0xde, (byte) 0x83,
- (byte) 0x50, (byte) 0x10, (byte) 0x80, (byte) 0x00,
- (byte) 0xee, (byte) 0x71, (byte) 0x00, (byte) 0x00,
- (byte) 0x68, (byte) 0x65, (byte) 0x6c, (byte) 0x6c,
- (byte) 0x6f, (byte) 0x2c, (byte) 0x20, (byte) 0x77,
- (byte) 0x6f, (byte) 0x72, (byte) 0x6c, (byte) 0x64
- });
-
- // Check that a valid packet has checksum 0.
- int transportLen = packet.limit() - IPV6_HEADER_LENGTH;
- assertEquals(0, IpUtils.tcpChecksum(packet, 0, IPV6_HEADER_LENGTH, transportLen));
-
- // Check that we can calculate the checksum from scratch.
- int sumOffset = IPV6_HEADER_LENGTH + TCP_CHECKSUM_OFFSET;
- int sum = getUnsignedByte(packet, sumOffset) * 256 + getUnsignedByte(packet, sumOffset + 1);
- assertEquals(0xee71, sum);
-
- packet.put(sumOffset, (byte) 0);
- packet.put(sumOffset + 1, (byte) 0);
- assertChecksumEquals(sum, IpUtils.tcpChecksum(packet, 0, IPV6_HEADER_LENGTH, transportLen));
-
- // Check that writing the checksum back into the packet results in a valid packet.
- packet.putShort(
- sumOffset,
- IpUtils.tcpChecksum(packet, 0, IPV6_HEADER_LENGTH, transportLen));
- assertEquals(0, IpUtils.tcpChecksum(packet, 0, IPV6_HEADER_LENGTH, transportLen));
- }
-
- @Test
- public void testIpv4UdpChecksum() {
- // packet = (scapy.IP(src="192.0.2.1", dst="192.0.2.2", tos=0x40) /
- // scapy.UDP(sport=32012, dport=4500) /
- // "\xff")
- ByteBuffer packet = ByteBuffer.wrap(new byte[] {
- (byte) 0x45, (byte) 0x40, (byte) 0x00, (byte) 0x1d,
- (byte) 0x00, (byte) 0x01, (byte) 0x00, (byte) 0x00,
- (byte) 0x40, (byte) 0x11, (byte) 0xf6, (byte) 0x8b,
- (byte) 0xc0, (byte) 0x00, (byte) 0x02, (byte) 0x01,
- (byte) 0xc0, (byte) 0x00, (byte) 0x02, (byte) 0x02,
- (byte) 0x7d, (byte) 0x0c, (byte) 0x11, (byte) 0x94,
- (byte) 0x00, (byte) 0x09, (byte) 0xee, (byte) 0x36,
- (byte) 0xff
- });
-
- // Check that a valid packet has IP checksum 0 and UDP checksum 0xffff (0 is not a valid
- // UDP checksum, so the udpChecksum rewrites 0 to 0xffff).
- assertEquals(0, IpUtils.ipChecksum(packet, 0));
- assertEquals((short) 0xffff, IpUtils.udpChecksum(packet, 0, IPV4_HEADER_LENGTH));
-
- // Check that we can calculate the checksums from scratch.
- final int ipSumOffset = IP_CHECKSUM_OFFSET;
- final int ipSum = getChecksum(packet, ipSumOffset);
- assertEquals(0xf68b, ipSum);
-
- packet.put(ipSumOffset, (byte) 0);
- packet.put(ipSumOffset + 1, (byte) 0);
- assertChecksumEquals(ipSum, IpUtils.ipChecksum(packet, 0));
-
- final int udpSumOffset = IPV4_HEADER_LENGTH + UDP_CHECKSUM_OFFSET;
- final int udpSum = getChecksum(packet, udpSumOffset);
- assertEquals(0xee36, udpSum);
-
- packet.put(udpSumOffset, (byte) 0);
- packet.put(udpSumOffset + 1, (byte) 0);
- assertChecksumEquals(udpSum, IpUtils.udpChecksum(packet, 0, IPV4_HEADER_LENGTH));
-
- // Check that writing the checksums back into the packet results in a valid packet.
- packet.putShort(ipSumOffset, IpUtils.ipChecksum(packet, 0));
- packet.putShort(udpSumOffset, IpUtils.udpChecksum(packet, 0, IPV4_HEADER_LENGTH));
- assertEquals(0, IpUtils.ipChecksum(packet, 0));
- assertEquals((short) 0xffff, IpUtils.udpChecksum(packet, 0, IPV4_HEADER_LENGTH));
- }
-}
diff --git a/wifi/jarjar-rules.txt b/wifi/jarjar-rules.txt
index e253ae25659e..eef08b54f570 100644
--- a/wifi/jarjar-rules.txt
+++ b/wifi/jarjar-rules.txt
@@ -70,7 +70,6 @@ rule android.net.util.NetworkConstants* com.android.wifi.x.@0
rule android.net.util.InterfaceParams* com.android.wifi.x.@0
rule android.net.util.SharedLog* com.android.wifi.x.@0
rule android.net.util.NetUtils* com.android.wifi.x.@0
-rule android.net.util.IpUtils* com.android.wifi.x.@0
rule androidx.annotation.** com.android.wifi.x.@0
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-03 05:09:30 +0000