2 * Copyright (c) 2016 Pantheon Technologies s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.model.ietf.util;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import com.google.common.net.InetAddresses;
15 import java.net.Inet4Address;
16 import java.net.Inet6Address;
17 import java.net.InetAddress;
18 import java.net.UnknownHostException;
19 import java.util.AbstractMap.SimpleImmutableEntry;
20 import java.util.Map.Entry;
21 import org.eclipse.jdt.annotation.NonNull;
22 import org.eclipse.jdt.annotation.Nullable;
23 import org.opendaylight.mdsal.binding.spec.reflect.StringValueObjectFactory;
26 * A set of utility methods to efficiently instantiate various ietf-inet-types DTOs.
29 @SuppressWarnings("checkstyle:classTypeParameterName")
30 public abstract class AbstractIetfInetUtil<A4, A4NZ extends A4, P4, A6, A6NZ extends A6, P6, A, ANZ, P> {
31 private static final int INET4_LENGTH = 4;
32 private static final int INET6_LENGTH = 16;
34 private final StringValueObjectFactory<A4NZ> address4NoZoneFactory;
35 private final StringValueObjectFactory<P4> prefix4Factory;
36 private final StringValueObjectFactory<A6NZ> address6NoZoneFactory;
37 private final StringValueObjectFactory<P6> prefix6Factory;
38 private final Class<A4NZ> addr4nzClass;
39 private final Class<A6NZ> addr6nzClass;
41 protected AbstractIetfInetUtil(final Class<A4NZ> addr4nzClass, final Class<P4> prefix4Class,
42 final Class<A6NZ> addr6nzClass, final Class<P6> prefix6Class) {
43 this.addr4nzClass = requireNonNull(addr4nzClass);
44 this.addr6nzClass = requireNonNull(addr6nzClass);
45 this.address4NoZoneFactory = StringValueObjectFactory.create(addr4nzClass, "0.0.0.0");
46 this.prefix4Factory = StringValueObjectFactory.create(prefix4Class, "0.0.0.0/0");
47 this.address6NoZoneFactory = StringValueObjectFactory.create(addr6nzClass, "::0");
48 this.prefix6Factory = StringValueObjectFactory.create(prefix6Class, "::0/0");
51 protected abstract @NonNull A ipv4Address(@NonNull A4NZ addr);
53 protected abstract @NonNull ANZ ipv4AddressNoZone(@NonNull A4NZ addr);
55 protected abstract @NonNull A ipv6Address(@NonNull A6NZ addr);
57 protected abstract @NonNull ANZ ipv6AddressNoZone(@NonNull A6NZ addr);
59 protected abstract @Nullable A4 maybeIpv4Address(@NonNull A addr);
61 protected abstract @Nullable A4NZ maybeIpv4AddressNoZone(@NonNull ANZ addr);
63 protected abstract @Nullable A6 maybeIpv6Address(@NonNull A addr);
65 protected abstract @Nullable A6NZ maybeIpv6AddressNoZone(@NonNull ANZ addr);
67 protected abstract @NonNull P ipv4Prefix(@NonNull P4 addr);
69 protected abstract @NonNull P ipv6Prefix(@NonNull P6 addr);
71 protected abstract @NonNull String ipv4AddressString(@NonNull A4 addr);
73 protected abstract @NonNull String ipv6AddressString(@NonNull A6 addr);
75 protected abstract @NonNull String ipv4PrefixString(@NonNull P4 prefix);
77 protected abstract @NonNull String ipv6PrefixString(@NonNull P6 prefix);
80 * Create an IpAddress by interpreting input bytes as an IPv4 or IPv6 address, based on array length.
82 * @param bytes 4-byte (IPv4) or 6-byte (IPv6) array
83 * @return An IpAddress object
84 * @throws IllegalArgumentException if bytes has length different from 4 or 6
85 * @throws NullPointerException if bytes is null
87 public final @NonNull A ipAddressFor(final byte @NonNull[] bytes) {
88 switch (bytes.length) {
90 return ipv4Address(ipv4AddressFor(bytes));
92 return ipv6Address(ipv6AddressFor(bytes));
94 throw new IllegalArgumentException("Invalid array length " + bytes.length);
98 public final @NonNull A ipAddressFor(final @NonNull InetAddress addr) {
99 requireNonNull(addr, "Address must not be null");
100 if (addr instanceof Inet4Address) {
101 return ipv4Address(ipv4AddressFor(addr));
102 } else if (addr instanceof Inet6Address) {
103 return ipv6Address(ipv6AddressFor(addr));
105 throw new IllegalArgumentException("Unhandled address " + addr);
110 * Create an IpAddress by interpreting input bytes as an IPv4 or IPv6 address, based on array length.
112 * @param bytes 4-byte (IPv4) or 6-byte (IPv6) array
113 * @return A no-zone IpAddress object
114 * @throws IllegalArgumentException if bytes has length different from 4 or 6
115 * @throws NullPointerException if bytes is null
117 public final @NonNull ANZ ipAddressNoZoneFor(final byte @NonNull[] bytes) {
118 switch (bytes.length) {
120 return ipv4AddressNoZone(ipv4AddressFor(bytes));
122 return ipv6AddressNoZone(ipv6AddressFor(bytes));
124 throw new IllegalArgumentException("Invalid array length " + bytes.length);
128 public final @NonNull ANZ ipAddressNoZoneFor(final @NonNull InetAddress addr) {
129 requireNonNull(addr, "Address must not be null");
130 if (addr instanceof Inet4Address) {
131 return ipv4AddressNoZone(ipv4AddressFor(addr));
132 } else if (addr instanceof Inet6Address) {
133 return ipv6AddressNoZone(ipv6AddressFor(addr));
135 throw new IllegalArgumentException("Unhandled address " + addr);
140 * Create an IpPrefix by combining the address with a mask. The address
141 * bytes are interpreted as an address and the specified mask is concatenated to
142 * it. The address bytes are not masked.
144 * @param bytes Input address as a 4-byte (IPv4) or 16-byte (IPv6) array
145 * @param mask Prefix mask
146 * @return An IpPrefix object
147 * @throws IllegalArgumentException if bytes has length different from 4 or 16 or if mask is not
148 * in range 0-32 or 0-128 respectively
149 * @throws NullPointerException if bytes is null
151 public final @NonNull P ipPrefixFor(final byte @NonNull[] bytes, final int mask) {
152 switch (bytes.length) {
154 return ipv4Prefix(ipv4PrefixFor(bytes, mask));
156 return ipv6Prefix(ipv6PrefixFor(bytes, mask));
158 throw new IllegalArgumentException("Invalid array length " + bytes.length);
162 public final @NonNull P ipPrefixFor(final @NonNull InetAddress addr, final int mask) {
163 requireNonNull(addr, "Address must not be null");
164 if (addr instanceof Inet4Address) {
165 return ipv4Prefix(ipv4PrefixFor(addr, mask));
166 } else if (addr instanceof Inet6Address) {
167 return ipv6Prefix(ipv6PrefixFor(addr, mask));
169 throw new IllegalArgumentException("Unhandled address " + addr);
173 public final @NonNull InetAddress inetAddressFor(final @NonNull A addr) {
174 final A4 v4 = maybeIpv4Address(addr);
176 return inet4AddressFor(v4);
178 final A6 v6 = maybeIpv6Address(addr);
179 checkArgument(v6 != null, "Address %s is neither IPv4 nor IPv6", addr);
180 return inet6AddressFor(v6);
183 public final @NonNull InetAddress inetAddressForNoZone(final @NonNull ANZ addr) {
184 final A4NZ v4 = maybeIpv4AddressNoZone(addr);
186 return inet4AddressForNoZone(v4);
188 final A6NZ v6 = maybeIpv6AddressNoZone(addr);
189 checkArgument(v6 != null, "Address %s is neither IPv4 nor IPv6", addr);
190 return inet6AddressForNoZone(v6);
194 public final @NonNull Inet4Address inet4AddressFor(final @NonNull A4 addr) {
196 return (Inet4Address) InetAddress.getByAddress(ipv4AddressBytes(addr));
197 } catch (UnknownHostException e) {
198 throw new IllegalArgumentException("Invalid address " + addr, e);
202 public final @NonNull Inet4Address inet4AddressForNoZone(final @NonNull A4NZ addr) {
204 return (Inet4Address) InetAddress.getByAddress(ipv4AddressNoZoneBytes(addr));
205 } catch (UnknownHostException e) {
206 throw new IllegalArgumentException("Invalid address " + addr, e);
210 public final @NonNull Inet6Address inet6AddressFor(final @NonNull A6 addr) {
212 return (Inet6Address) InetAddress.getByAddress(ipv6AddressBytes(addr));
213 } catch (UnknownHostException e) {
214 throw new IllegalArgumentException("Invalid address " + addr, e);
218 public final @NonNull Inet6Address inet6AddressForNoZone(final @NonNull A6NZ addr) {
220 return (Inet6Address) InetAddress.getByAddress(ipv6AddressNoZoneBytes(addr));
221 } catch (UnknownHostException e) {
222 throw new IllegalArgumentException("Invalid address " + addr, e);
227 * Create an Ipv4AddressNoZone by interpreting input bytes as an IPv4 address.
229 * @param bytes 4-byte array
230 * @return An Ipv4AddressNoZone object
231 * @throws IllegalArgumentException if bytes has length different from 4
232 * @throws NullPointerException if bytes is null
234 public final @NonNull A4NZ ipv4AddressFor(final byte @NonNull[] bytes) {
235 return address4NoZoneFactory.newInstance(addressStringV4(bytes));
239 * Create an Ipv4AddressNoZone by interpreting an {@link Inet4Address}.
241 * @param addr An {@link Inet4Address}
242 * @return An Ipv4AddressNoZone object
243 * @throws IllegalArgumentException if addr is not an {@link Inet4Address}
244 * @throws NullPointerException if addr is null
246 public final @NonNull A4NZ ipv4AddressFor(final @NonNull InetAddress addr) {
247 return address4NoZoneFactory.newInstance(addressStringV4(addr));
251 * Create an Ipv4AddressNoZone by interpreting input 32 bits as an IPv4 address in big-endian format.
253 * @param bits 32 bits, big endian
254 * @return An Ipv4AddressNoZone object
256 public final @NonNull A4NZ ipv4AddressFor(final int bits) {
257 return address4NoZoneFactory.newInstance(Ipv4Utils.addressString(bits));
261 * Create an Ipv4AddressNoZone by interpreting an Ipv4Address.
263 * @param addr An Ipv4Address
264 * @return An Ipv4AddressNoZone object
265 * @throws NullPointerException if addr is null
267 public final @NonNull A4NZ ipv4AddressNoZoneFor(final @NonNull A4 addr) {
268 requireNonNull(addr, "Address must not be null");
269 return addr4nzClass.isInstance(addr) ? addr4nzClass.cast(addr)
270 : address4NoZoneFactory.newInstance(stripZone(ipv4AddressString(addr)));
273 public final @NonNull A4NZ ipv4AddressFrom(final @NonNull P4 prefix) {
274 return prefixToAddress(address4NoZoneFactory, ipv4PrefixString(prefix));
277 @Deprecated(forRemoval = true)
278 public final @NonNull A4NZ ipv4AddressNoZoneFrom(final @NonNull P4 prefix) {
279 return ipv4AddressFrom(prefix);
282 public final byte @NonNull[] ipv4AddressBytes(final @NonNull A4 addr) {
284 * This implementation relies heavily on the input string having been validated to comply with
285 * the Ipv4Address pattern, which may include a zone index.
287 final String str = ipv4AddressString(addr);
288 final int percent = str.indexOf('%');
289 return Ipv4Utils.addressBytes(str, percent == -1 ? str.length() : percent);
292 public final int ipv4AddressBits(final @NonNull A4 addr) {
293 final String str = ipv4AddressString(addr);
294 final int percent = str.indexOf('%');
295 return Ipv4Utils.addressBits(str, percent == -1 ? str.length() : percent);
298 public final byte @NonNull[] ipv4AddressNoZoneBytes(final @NonNull A4NZ addr) {
300 * This implementation relies heavily on the input string having been validated to comply with
301 * the Ipv4AddressNoZone pattern, which must not include a zone index.
303 final String str = ipv4AddressString(addr);
304 return Ipv4Utils.addressBytes(str, str.length());
307 public final int ipv4AddressNoZoneBits(final @NonNull A4NZ addr) {
308 final String str = ipv4AddressString(addr);
309 return Ipv4Utils.addressBits(str, str.length());
313 * Create a /32 Ipv4Prefix by interpreting input bytes as an IPv4 address.
315 * @param bytes four-byte array
316 * @return An Ipv4Prefix object
317 * @throws IllegalArgumentException if bytes has length different from 4
318 * @throws NullPointerException if bytes is null
320 public final @NonNull P4 ipv4PrefixFor(final byte @NonNull[] bytes) {
321 return prefix4Factory.newInstance(prefixStringV4(bytes));
325 * Create a Ipv4Prefix by combining the address with a mask. The address
326 * bytes are interpreted as an address and the specified mask is concatenated to
327 * it. The address bytes are not masked, hence input <code>address = { 1, 2, 3, 4 }</code>
328 * and <code>mask=24</code> will result in <code>1.2.3.4/24</code>.
330 * @param address Input address as a 4-byte array
331 * @param mask Prefix mask
332 * @return An Ipv4Prefix object
333 * @throws IllegalArgumentException if bytes has length different from 4 or if mask is not in range 0-32
334 * @throws NullPointerException if bytes is null
336 public final @NonNull P4 ipv4PrefixFor(final byte @NonNull[] address, final int mask) {
337 return prefix4Factory.newInstance(prefixStringV4(address, mask));
341 * Create a /32 Ipv4Prefix for an {@link Inet4Address}.
343 * @param addr An {@link Inet4Address}
344 * @return An Ipv4Prefix object
345 * @throws IllegalArgumentException if addr is not an Inet4Address
346 * @throws NullPointerException if addr is null
348 public final @NonNull P4 ipv4PrefixFor(final @NonNull InetAddress addr) {
349 return prefix4Factory.newInstance(addressStringV4(addr) + "/32");
353 * Create a Ipv4Prefix by combining the address with a mask. The address bytes are not masked.
355 * @param addr An {@link Inet4Address}
356 * @param mask Prefix mask
357 * @return An Ipv4Prefix object
358 * @throws IllegalArgumentException if addr is not an Inet4Address or if mask is not in range 0-32
359 * @throws NullPointerException if addr is null
361 public final @NonNull P4 ipv4PrefixFor(final @NonNull InetAddress addr, final int mask) {
362 return newIpv4Prefix(addressStringV4(addr), mask);
365 public final @NonNull P4 ipv4PrefixFor(final @NonNull A4 addr) {
366 requireNonNull(addr, "Address must not be null");
367 return prefix4Factory.newInstance(stripZone(ipv4AddressString(addr)) + "/32");
370 public final @NonNull P4 ipv4PrefixFor(final @NonNull A4 addr, final int mask) {
371 requireNonNull(addr, "Address must not be null");
372 return newIpv4Prefix(stripZone(ipv4AddressString(addr)), mask);
375 public final @NonNull P4 ipv4PrefixForNoZone(final @NonNull A4NZ addr) {
376 requireNonNull(addr, "Address must not be null");
377 return prefix4Factory.newInstance(ipv4AddressString(addr) + "/32");
380 public final @NonNull P4 ipv4PrefixForNoZone(final @NonNull A4NZ addr, final int mask) {
381 requireNonNull(addr, "Address must not be null");
382 return newIpv4Prefix(ipv4AddressString(addr), mask);
385 public final @NonNull P4 ipv4PrefixForShort(final byte @NonNull[] address, final int mask) {
387 // Easy case, reuse the template
388 return prefix4Factory.getTemplate();
391 return v4PrefixForShort(address, 0, mask / Byte.SIZE + (mask % Byte.SIZE == 0 ? 0 : 1), mask);
394 public final @NonNull P4 ipv4PrefixForShort(final byte @NonNull[] array, final int startOffset, final int mask) {
396 // Easy case, reuse the template
397 return prefix4Factory.getTemplate();
400 return v4PrefixForShort(array, startOffset, mask / Byte.SIZE + (mask % Byte.SIZE == 0 ? 0 : 1), mask);
403 private static String stripZone(final String str) {
404 final int percent = str.indexOf('%');
405 return percent == -1 ? str : str.substring(0, percent);
408 private @NonNull P4 newIpv4Prefix(final String addr, final int mask) {
409 checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
410 return prefix4Factory.newInstance(addr + '/' + mask);
413 public final @NonNull Entry<A4NZ, Integer> splitIpv4Prefix(final @NonNull P4 prefix) {
414 return splitPrefix(address4NoZoneFactory, ipv4PrefixString(prefix));
417 @Deprecated(forRemoval = true)
418 public final @NonNull Entry<A4NZ, Integer> splitIpv4PrefixNoZone(final @NonNull P4 prefix) {
419 return splitIpv4Prefix(prefix);
422 public final byte @NonNull[] ipv4PrefixToBytes(final @NonNull P4 prefix) {
423 final String str = ipv4PrefixString(prefix);
424 final int slash = str.lastIndexOf('/');
426 final byte[] bytes = new byte[INET4_LENGTH + 1];
427 Ipv4Utils.fillIpv4Bytes(bytes, 0, str, 0, slash);
428 bytes[INET4_LENGTH] = (byte)Integer.parseInt(str.substring(slash + 1), 10);
433 * Create an Ipv6Address by interpreting input bytes as an IPv6 address.
435 * @param bytes 16-byte array
436 * @return An Ipv6Address object
437 * @throws IllegalArgumentException if bytes has length different from 16
438 * @throws NullPointerException if bytes is null
440 public final @NonNull A6NZ ipv6AddressFor(final byte @NonNull[] bytes) {
441 return address6NoZoneFactory.newInstance(addressStringV6(bytes));
445 * Create an Ipv6Address by interpreting an {@link Inet6Address}.
447 * @param addr An {@link Inet6Address}
448 * @return An Ipv6Address object
449 * @throws IllegalArgumentException if addr is not an {@link Inet6Address}
450 * @throws NullPointerException if addr is null
452 public final @NonNull A6NZ ipv6AddressFor(final @NonNull InetAddress addr) {
453 return address6NoZoneFactory.newInstance(addressStringV6(addr));
457 * Create an Ipv6AddressNoZone by interpreting an Ipv6Address.
459 * @param addr An Ipv6Address
460 * @return An Ipv6AddressNoZone object
461 * @throws NullPointerException if addr is null
463 public final @NonNull A6NZ ipv6AddressNoZoneFor(final @NonNull A6 addr) {
464 requireNonNull(addr, "Address must not be null");
465 return addr6nzClass.isInstance(addr) ? addr6nzClass.cast(addr)
466 : address6NoZoneFactory.newInstance(stripZone(ipv6AddressString(addr)));
469 public final @NonNull A6NZ ipv6AddressFrom(final @NonNull P6 prefix) {
470 return prefixToAddress(address6NoZoneFactory, ipv6PrefixString(prefix));
473 @Deprecated(forRemoval = true)
474 public final @NonNull A6NZ ipv6AddressNoZoneFrom(final @NonNull P6 prefix) {
475 return ipv6AddressFrom(prefix);
478 public final byte @NonNull[] ipv6AddressBytes(final @NonNull A6 addr) {
479 final String str = ipv6AddressString(addr);
480 final int percent = str.indexOf('%');
481 return ipv6StringBytes(str, percent == -1 ? str.length() : percent);
484 public final byte @NonNull[] ipv6AddressNoZoneBytes(final @NonNull A6NZ addr) {
485 final String str = ipv6AddressString(addr);
486 return ipv6StringBytes(str, str.length());
489 private static byte @NonNull[] ipv6StringBytes(final @NonNull String str, final int limit) {
490 final byte[] bytes = new byte[INET6_LENGTH];
491 Ipv6Utils.fillIpv6Bytes(bytes, str, limit);
496 * Create a /128 Ipv6Prefix by interpreting input bytes as an IPv6 address.
498 * @param bytes four-byte array
499 * @return An Ipv6Prefix object
500 * @throws IllegalArgumentException if bytes has length different from 16
501 * @throws NullPointerException if bytes is null
503 public final @NonNull P6 ipv6PrefixFor(final byte @NonNull[] bytes) {
504 return prefix6Factory.newInstance(addressStringV6(bytes) + "/128");
508 * Create a Ipv6Prefix by combining the address with a mask. The address
509 * bytes are interpreted as an address and the specified mask is concatenated to
510 * it. The address bytes are not masked.
512 * @param address Input address as a 16-byte array
513 * @param mask Prefix mask
514 * @return An Ipv6Prefix object
515 * @throws IllegalArgumentException if bytes has length different from 16 or if mask is not in range 0-128
516 * @throws NullPointerException if bytes is null
518 public final @NonNull P6 ipv6PrefixFor(final byte @NonNull[] address, final int mask) {
519 checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
520 return prefix6Factory.newInstance(addressStringV6(address) + '/' + mask);
524 * Create a /128 Ipv6Prefix by interpreting input bytes as an IPv6 address.
526 * @param addr an {@link Inet6Address}
527 * @return An Ipv6Prefix object
528 * @throws IllegalArgumentException if addr is not an Inet6Address
529 * @throws NullPointerException if addr is null
531 public final @NonNull P6 ipv6PrefixFor(final @NonNull InetAddress addr) {
532 return prefix6Factory.newInstance(addressStringV6(addr) + "/128");
536 * Create a Ipv6Prefix by combining the address with a mask. The address
537 * bytes are interpreted as an address and the specified mask is concatenated to
538 * it. The address bytes are not masked.
540 * @param addr Input address
541 * @param mask Prefix mask
542 * @return An Ipv6Prefix object
543 * @throws IllegalArgumentException if addr is not an Inet6Address or if mask is not in range 0-128
544 * @throws NullPointerException if addr is null
546 public final @NonNull P6 ipv6PrefixFor(final @NonNull InetAddress addr, final int mask) {
547 checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
548 return prefix6Factory.newInstance(addressStringV6(addr) + '/' + mask);
551 public final @NonNull P6 ipv6PrefixFor(final @NonNull A6 addr) {
552 requireNonNull(addr, "Address must not be null");
553 return prefix6Factory.newInstance(stripZone(ipv6AddressString(addr)) + "/128");
556 public final @NonNull P6 ipv6PrefixFor(final @NonNull A6 addr, final int mask) {
557 requireNonNull(addr, "Address must not be null");
558 return newIpv6Prefix(stripZone(ipv6AddressString(addr)), mask);
561 public final @NonNull P6 ipv6PrefixForNoZone(final @NonNull A6NZ addr) {
562 requireNonNull(addr, "Address must not be null");
563 return prefix6Factory.newInstance(ipv6AddressString(addr) + "/128");
566 public final @NonNull P6 ipv6PrefixForNoZone(final @NonNull A6NZ addr, final int mask) {
567 requireNonNull(addr, "Address must not be null");
568 return newIpv6Prefix(ipv6AddressString(addr), mask);
571 public final @NonNull P6 ipv6PrefixForShort(final byte @NonNull[] address, final int mask) {
572 return ipv6PrefixForShort(address, 0, mask);
575 public final @NonNull P6 ipv6PrefixForShort(final byte @NonNull[] array, final int startOffset, final int mask) {
577 // Easy case, reuse the template
578 return prefix6Factory.getTemplate();
581 checkArgument(mask > 0 && mask <= 128, "Invalid mask %s", mask);
582 final int size = mask / Byte.SIZE + (mask % Byte.SIZE == 0 ? 0 : 1);
584 // Until we can instantiate an IPv6 address for a partial array, use a temporary buffer
585 byte[] tmp = new byte[INET6_LENGTH];
586 System.arraycopy(array, startOffset, tmp, 0, size);
587 return ipv6PrefixFor(tmp, mask);
590 private P6 newIpv6Prefix(final String addr, final int mask) {
591 checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
592 return prefix6Factory.newInstance(addr + '/' + mask);
595 public final @NonNull Entry<A6NZ, Integer> splitIpv6Prefix(final @NonNull P6 prefix) {
596 return splitPrefix(address6NoZoneFactory, ipv6PrefixString(prefix));
599 @Deprecated(forRemoval = true)
600 public final @NonNull Entry<A6NZ, Integer> splitIpv6PrefixNoZone(final @NonNull P6 prefix) {
601 return splitIpv6Prefix(prefix);
604 private static <T> @NonNull T prefixToAddress(final StringValueObjectFactory<T> factory, final String str) {
605 return factory.newInstance(str.substring(0, str.lastIndexOf('/')));
608 private static <T> @NonNull Entry<T, Integer> splitPrefix(final StringValueObjectFactory<T> factory,
610 final int slash = str.lastIndexOf('/');
611 return new SimpleImmutableEntry<>(factory.newInstance(str.substring(0, slash)),
612 Integer.valueOf(str.substring(slash + 1)));
615 public final byte @NonNull[] ipv6PrefixToBytes(final @NonNull P6 prefix) {
616 final String str = ipv6PrefixString(prefix);
617 final byte[] bytes = new byte[INET6_LENGTH + 1];
618 final int slash = str.lastIndexOf('/');
619 Ipv6Utils.fillIpv6Bytes(bytes, str, slash);
620 bytes[INET6_LENGTH] = (byte)Integer.parseInt(str.substring(slash + 1), 10);
624 private static void appendIpv4String(final StringBuilder sb, final byte @NonNull[] bytes) {
625 checkArgument(bytes.length == INET4_LENGTH, "IPv4 address length is 4 bytes");
627 sb.append(Byte.toUnsignedInt(bytes[0]));
628 for (int i = 1; i < INET4_LENGTH; ++i) {
629 sb.append('.').append(Byte.toUnsignedInt(bytes[i]));
633 static String addressStringV4(final byte @NonNull[] bytes) {
634 final StringBuilder sb = new StringBuilder(15);
635 appendIpv4String(sb, bytes);
636 return sb.toString();
639 private static @NonNull String addressStringV4(final InetAddress addr) {
640 requireNonNull(addr, "Address must not be null");
641 checkArgument(addr instanceof Inet4Address, "Address has to be an Inet4Address");
642 return addr.getHostAddress();
645 private static String addressStringV6(final byte @NonNull[] bytes) {
646 checkArgument(bytes.length == INET6_LENGTH, "IPv6 address length is 16 bytes");
649 return addressStringV6(Inet6Address.getByAddress(null, bytes, null));
650 } catch (UnknownHostException e) {
651 throw new IllegalArgumentException(String.format("Invalid input %s", bytes), e);
655 private static String addressStringV6(final InetAddress addr) {
656 requireNonNull(addr, "Address must not be null");
657 checkArgument(addr instanceof Inet6Address, "Address has to be an Inet6Address");
658 return addressStringV6((Inet6Address) addr);
661 private static String addressStringV6(final Inet6Address addr) {
662 return InetAddresses.toAddrString(addr);
665 private static String prefixStringV4(final byte @NonNull[] bytes) {
666 final StringBuilder sb = new StringBuilder(18);
667 appendIpv4String(sb, bytes);
668 return sb.append("/32").toString();
671 private static String prefixStringV4(final byte @NonNull[] bytes, final int mask) {
672 checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
674 final StringBuilder sb = new StringBuilder(18);
675 appendIpv4String(sb, bytes);
676 return sb.append('/').append(mask).toString();
679 private P4 v4PrefixForShort(final byte @NonNull[] array, final int startOffset, final int size, final int mask) {
680 if (startOffset == 0 && size == INET4_LENGTH && array.length == INET4_LENGTH) {
681 // Easy case, fall back to non-short
682 return ipv4PrefixFor(array, mask);
685 final StringBuilder sb = new StringBuilder(18);
688 sb.append(Byte.toUnsignedInt(array[startOffset]));
689 for (int i = 1; i < size; i++) {
690 sb.append('.').append(Byte.toUnsignedInt(array[startOffset + i]));
694 for (int i = size; i < INET4_LENGTH; i++) {
699 checkArgument(mask > 0 && mask <= 32, "Invalid mask %s", mask);
700 sb.append('/').append(mask);
702 return prefix4Factory.newInstance(sb.toString());