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fix apache#3289. add route rule enhance
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151 changes: 150 additions & 1 deletion
151
dubbo-common/src/main/java/org/apache/dubbo/common/utils/CIDRUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,156 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF licenses this file to You 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. | ||
| */ | ||
| /* | ||
| * The MIT License | ||
| * | ||
| * Copyright (c) 2013 Edin Dazdarevic (edin.dazdarevic@gmail.com) | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| * | ||
| **/ | ||
| package org.apache.dubbo.common.utils; | ||
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| import java.math.BigInteger; | ||
| import java.net.InetAddress; | ||
| import java.net.UnknownHostException; | ||
| import java.nio.ByteBuffer; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
|
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| /** | ||
| * @author cvictory ON 2019-02-27 | ||
| * A class that enables to get an IP range from CIDR specification. It supports | ||
| * both IPv4 and IPv6. | ||
| * <p> | ||
| * From https://github.com/edazdarevic/CIDRUtils/blob/master/CIDRUtils.java | ||
| */ | ||
| public class CIDRUtils { | ||
| private final String cidr; | ||
|
|
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| private InetAddress inetAddress; | ||
| private InetAddress startAddress; | ||
| private InetAddress endAddress; | ||
| private final int prefixLength; | ||
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| public CIDRUtils(String cidr) throws UnknownHostException { | ||
|
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| this.cidr = cidr; | ||
|
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| /* split CIDR to address and prefix part */ | ||
| if (this.cidr.contains("/")) { | ||
| int index = this.cidr.indexOf("/"); | ||
| String addressPart = this.cidr.substring(0, index); | ||
| String networkPart = this.cidr.substring(index + 1); | ||
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| inetAddress = InetAddress.getByName(addressPart); | ||
| prefixLength = Integer.parseInt(networkPart); | ||
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| calculate(); | ||
| } else { | ||
| throw new IllegalArgumentException("not an valid CIDR format!"); | ||
| } | ||
| } | ||
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| private void calculate() throws UnknownHostException { | ||
|
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| ByteBuffer maskBuffer; | ||
| int targetSize; | ||
| if (inetAddress.getAddress().length == 4) { | ||
| maskBuffer = | ||
| ByteBuffer | ||
| .allocate(4) | ||
| .putInt(-1); | ||
| targetSize = 4; | ||
| } else { | ||
| maskBuffer = ByteBuffer.allocate(16) | ||
| .putLong(-1L) | ||
| .putLong(-1L); | ||
| targetSize = 16; | ||
| } | ||
|
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| BigInteger mask = (new BigInteger(1, maskBuffer.array())).not().shiftRight(prefixLength); | ||
|
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| ByteBuffer buffer = ByteBuffer.wrap(inetAddress.getAddress()); | ||
| BigInteger ipVal = new BigInteger(1, buffer.array()); | ||
|
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| BigInteger startIp = ipVal.and(mask); | ||
| BigInteger endIp = startIp.add(mask.not()); | ||
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| byte[] startIpArr = toBytes(startIp.toByteArray(), targetSize); | ||
| byte[] endIpArr = toBytes(endIp.toByteArray(), targetSize); | ||
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| this.startAddress = InetAddress.getByAddress(startIpArr); | ||
| this.endAddress = InetAddress.getByAddress(endIpArr); | ||
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| } | ||
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| private byte[] toBytes(byte[] array, int targetSize) { | ||
| int counter = 0; | ||
| List<Byte> newArr = new ArrayList<Byte>(); | ||
| while (counter < targetSize && (array.length - 1 - counter >= 0)) { | ||
| newArr.add(0, array[array.length - 1 - counter]); | ||
| counter++; | ||
| } | ||
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| int size = newArr.size(); | ||
| for (int i = 0; i < (targetSize - size); i++) { | ||
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| newArr.add(0, (byte) 0); | ||
| } | ||
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| byte[] ret = new byte[newArr.size()]; | ||
| for (int i = 0; i < newArr.size(); i++) { | ||
| ret[i] = newArr.get(i); | ||
| } | ||
| return ret; | ||
| } | ||
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| // public String getNetworkAddress() { | ||
| // | ||
| // return this.startAddress.getHostAddress(); | ||
| // } | ||
| // | ||
| // public String getBroadcastAddress() { | ||
| // return this.endAddress.getHostAddress(); | ||
| // } | ||
|
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| public boolean isInRange(String ipAddress) throws UnknownHostException { | ||
| InetAddress address = InetAddress.getByName(ipAddress); | ||
| BigInteger start = new BigInteger(1, this.startAddress.getAddress()); | ||
| BigInteger end = new BigInteger(1, this.endAddress.getAddress()); | ||
| BigInteger target = new BigInteger(1, address.getAddress()); | ||
|
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| int st = start.compareTo(target); | ||
| int te = target.compareTo(end); | ||
|
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| return (st == -1 || st == 0) && (te == -1 || te == 0); | ||
| } | ||
| } |
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40 changes: 40 additions & 0 deletions
40
dubbo-common/src/test/java/org/apache/dubbo/common/utils/CIDRUtilsTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package org.apache.dubbo.common.utils; | ||
|
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| import org.junit.jupiter.api.Assertions; | ||
| import org.junit.jupiter.api.Test; | ||
|
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| import java.net.UnknownHostException; | ||
|
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| /** | ||
| * @author cvictory ON 2019-02-28 | ||
| */ | ||
| public class CIDRUtilsTest { | ||
|
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| @Test | ||
| public void testIpv4() throws UnknownHostException { | ||
| CIDRUtils cidrUtils = new CIDRUtils("192.168.1.0/26"); | ||
| Assertions.assertTrue(cidrUtils.isInRange("192.168.1.63")); | ||
| Assertions.assertFalse(cidrUtils.isInRange("192.168.1.65")); | ||
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| cidrUtils = new CIDRUtils("192.168.1.192/26"); | ||
| Assertions.assertTrue(cidrUtils.isInRange("192.168.1.199")); | ||
| Assertions.assertFalse(cidrUtils.isInRange("192.168.1.190")); | ||
| } | ||
|
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| @Test | ||
| public void testIpv6() throws UnknownHostException { | ||
| CIDRUtils cidrUtils = new CIDRUtils("234e:0:4567::3d/64"); | ||
| Assertions.assertTrue(cidrUtils.isInRange("234e:0:4567::3e")); | ||
| Assertions.assertTrue(cidrUtils.isInRange("234e:0:4567::ffff:3e")); | ||
| Assertions.assertFalse(cidrUtils.isInRange("234e:1:4567::3d")); | ||
| Assertions.assertFalse(cidrUtils.isInRange("234e:0:4567:1::3d")); | ||
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| cidrUtils = new CIDRUtils("3FFE:FFFF:0:CC00::/54"); | ||
| Assertions.assertTrue(cidrUtils.isInRange("3FFE:FFFF:0:CC00::dd")); | ||
| Assertions.assertTrue(cidrUtils.isInRange("3FFE:FFFF:0:CC00:0000:eeee:0909:dd")); | ||
| Assertions.assertTrue(cidrUtils.isInRange("3FFE:FFFF:0:CC0F:0000:eeee:0909:dd")); | ||
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| Assertions.assertFalse(cidrUtils.isInRange("3EFE:FFFE:0:C107::dd")); | ||
| Assertions.assertFalse(cidrUtils.isInRange("1FFE:FFFE:0:CC00::dd")); | ||
| } | ||
| } |
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