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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.net;
import com.google.common.net.InetAddresses;
import ai.vespa.net.CidrBlock;
import org.junit.Test;
import java.net.InetAddress;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* @author valerijf
*/
public class CidrBlockTest {
@Test(expected = IllegalArgumentException.class)
public void negative_prefix_size_fails() {
new CidrBlock(InetAddresses.forString("10.0.0.1"), -1);
}
@Test(expected = IllegalArgumentException.class)
public void too_large_ipv4_prefix_size_fails() {
new CidrBlock(InetAddresses.forString("10.0.0.1"), 35);
}
@Test(expected = IllegalArgumentException.class)
public void too_large_ipv6_prefix_size_fails() {
new CidrBlock(InetAddresses.forString("::1"), 130);
}
@Test
public void bits_after_prefix_are_ignored() {
withHostIdentifierCleared("10.3.0.0/16", "10.3.12.180/16", "10.3.128.3/16");
withHostIdentifierCleared("1234:5600::/25", "1234:5678::123/25", "1234:5600::725/25");
}
private void withHostIdentifierCleared(String canonical, String... aliases) {
CidrBlock canonicalBlock = CidrBlock.fromString(canonical);
assertEquals(canonical, canonicalBlock.toString());
for (String alias : aliases) {
CidrBlock aliasBlock = CidrBlock.fromString(alias).clearHostIdentifier();
assertEquals(canonicalBlock, aliasBlock);
assertEquals(canonical, aliasBlock.toString());
}
}
@Test
public void parse_from_string_test() {
assertEquals(new CidrBlock(InetAddresses.forString("10.0.0.1"), 12), CidrBlock.fromString("10.0.0.1/12"));
assertEquals(new CidrBlock(InetAddresses.forString("1234:5678::1"), 64), CidrBlock.fromString("1234:5678:0000::1/64"));
}
@Test
public void ipv4_overlap_test() {
CidrBlock base = CidrBlock.fromString("10.3.0.0/16");
assertTrue(base.overlapsWith(CidrBlock.fromString("10.3.0.0/16")));
assertTrue(base.overlapsWith(CidrBlock.fromString("10.0.0.0/8")));
assertTrue(base.overlapsWith(CidrBlock.fromString("10.3.128.0/17")));
assertFalse(base.overlapsWith(CidrBlock.fromString("10.4.0.0/16")));
assertFalse(base.overlapsWith(CidrBlock.fromString("11.0.0.0/8")));
}
@Test
public void ipv6_overlap_test() {
CidrBlock base = CidrBlock.fromString("1234:5678:abcd::/48");
assertTrue(base.overlapsWith(CidrBlock.fromString("1234:5678:abcd::/48")));
assertTrue(base.overlapsWith(CidrBlock.fromString("1234:5678::/32")));
assertTrue(base.overlapsWith(CidrBlock.fromString("1234:5678:abcd:8000::/49")));
assertFalse(base.overlapsWith(CidrBlock.fromString("1234:5678:abce::/48")));
assertFalse(base.overlapsWith(CidrBlock.fromString("1234:5679::/32")));
}
@Test
public void domain_name_test() {
assertEquals("3.10.in-addr.arpa.", CidrBlock.fromString("10.3.0.0/16").getDomainName());
assertEquals("128.192.in-addr.arpa.", CidrBlock.fromString("192.128.0.0/9").getDomainName());
assertEquals("d.c.b.a.8.7.6.5.4.3.2.1.ip6.arpa.", CidrBlock.fromString("1234:5678:abcd::/48").getDomainName());
assertEquals("8.c.b.a.8.7.6.5.4.3.2.1.ip6.arpa.", CidrBlock.fromString("1234:5678:abc8::/45").getDomainName());
}
@Test
public void iterableCidrs() {
CidrBlock superBlock = CidrBlock.fromString("10.12.14.0/24");
assertEquals(List.of("10.12.14.200/29", "10.12.14.208/29", "10.12.14.216/29", "10.12.14.224/29", "10.12.14.232/29", "10.12.14.240/29", "10.12.14.248/29"),
StreamSupport.stream(CidrBlock.fromString("10.12.14.200/29").iterableCidrs().spliterator(), false)
.takeWhile(superBlock::overlapsWith)
.map(CidrBlock::asString)
.collect(Collectors.toList()));
assertEquals(StreamSupport.stream(superBlock.iterableIps().spliterator(), false)
.skip(24)
.map(ip -> InetAddresses.toAddrString(ip) + "/32")
.collect(Collectors.toList()),
StreamSupport.stream(CidrBlock.fromString("10.12.14.24/32").iterableCidrs().spliterator(), false)
.takeWhile(superBlock::overlapsWith)
.map(CidrBlock::asString)
.collect(Collectors.toList()));
}
@Test
public void iterableIps() {
assertEquals(List.of("10.12.14.24", "10.12.14.25", "10.12.14.26", "10.12.14.27", "10.12.14.28", "10.12.14.29", "10.12.14.30", "10.12.14.31"),
StreamSupport.stream(CidrBlock.fromString("10.12.14.24/29").iterableIps().spliterator(), false)
.map(InetAddresses::toAddrString)
.collect(Collectors.toList()));
assertEquals(List.of("10.12.14.24"),
StreamSupport.stream(CidrBlock.fromString("10.12.14.24/32").iterableIps().spliterator(), false)
.map(InetAddresses::toAddrString)
.collect(Collectors.toList()));
}
@Test
public void testByteAccessors() {
CidrBlock ipv4Block = CidrBlock.fromString("11.22.33.44/24");
assertEquals(11, ipv4Block.getByte(0));
assertEquals(22, ipv4Block.getByte(1));
assertEquals(33, ipv4Block.getByte(2));
assertEquals(44, ipv4Block.getByte(3));
assertEquals(24, ipv4Block.prefixLength());
assertEquals("12.22.33.44/24", ipv4Block.addByte(0, 1).asString());
assertEquals("11.22.33.45/24", ipv4Block.addByte(3, 1).asString());
assertEquals("55.22.33.44/24", ipv4Block.setByte(0, 55).asString());
assertEquals("11.22.33.55/24", ipv4Block.setByte(3, 55).asString());
CidrBlock ipv6Block = CidrBlock.fromString("de63:aca:dcdc:e2a8:1fb4:542:b80d:f7c3/24");
assertEquals(0xde, ipv6Block.getByte(0));
assertEquals(0x63, ipv6Block.getByte(1));
assertEquals(0x0a, ipv6Block.getByte(2));
assertEquals(0xc3, ipv6Block.getByte(15));
assertEquals(24, ipv6Block.prefixLength());
assertEquals("df63:aca:dcdc:e2a8:1fb4:542:b80d:f7c3/24", ipv6Block.addByte(0, 1).asString());
assertEquals("ab63:aca:dcdc:e2a8:1fb4:542:b80d:f7c3/24", ipv6Block.setByte(0, 0xab).asString());
assertEquals("de63:aca:dcdc:e2a8:1fb4:542:b80d:f7c4/24", ipv6Block.addByte(15, 1).asString());
assertEquals("de63:aca:dcdc:e2a8:1fb4:542:b80d:f7fe/24", ipv6Block.setByte(15, 0xfe).asString());
}
@Test
public void testContainment() {
CidrBlock block = CidrBlock.fromString("1234:5678::/32");
assertFalse(block.contains(toInetAddress("1234:5677:ffff:ffff:ffff:ffff:ffff:ffff")));
assertTrue( block.contains(toInetAddress("1234:5678:0000:0000:0000:0000:0000:0000")));
assertTrue( block.contains(toInetAddress("1234:5678:0000:0000:0000:0000:0000:0001")));
assertTrue( block.contains(toInetAddress("1234:5678:ffff:ffff:ffff:ffff:ffff:ffff")));
assertFalse(block.contains(toInetAddress("1234:5679:0000:0000:0000:0000:0000:0001")));
}
private InetAddress toInetAddress(String address) {
return InetAddresses.forString(address);
}
}
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