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<A4> address4Factory;
35 private final StringValueObjectFactory<A4NZ> address4NoZoneFactory;
36 private final StringValueObjectFactory<P4> prefix4Factory;
37 private final StringValueObjectFactory<A6> address6Factory;
38 private final StringValueObjectFactory<A6NZ> address6NoZoneFactory;
39 private final StringValueObjectFactory<P6> prefix6Factory;
40 private final Class<A4NZ> addr4nzClass;
41 private final Class<A6NZ> addr6nzClass;
43 protected AbstractIetfInetUtil(final Class<A4> addr4Class, final Class<A4NZ> addr4nzClass,
44 final Class<P4> prefix4Class, final Class<A6> addr6Class, final Class<A6NZ> addr6nzClass,
45 final Class<P6> prefix6Class) {
46 this.addr4nzClass = requireNonNull(addr4nzClass);
47 this.addr6nzClass = requireNonNull(addr6nzClass);
48 this.address4Factory = StringValueObjectFactory.create(addr4Class, "0.0.0.0");
49 this.address4NoZoneFactory = StringValueObjectFactory.create(addr4nzClass, "0.0.0.0");
50 this.prefix4Factory = StringValueObjectFactory.create(prefix4Class, "0.0.0.0/0");
51 this.address6Factory = StringValueObjectFactory.create(addr6Class, "::0");
52 this.address6NoZoneFactory = StringValueObjectFactory.create(addr6nzClass, "::0");
53 this.prefix6Factory = StringValueObjectFactory.create(prefix6Class, "::0/0");
56 protected abstract @NonNull A ipv4Address(@NonNull A4 addr);
58 protected abstract @NonNull ANZ ipv4AddressNoZone(@NonNull A4NZ addr);
60 protected abstract @NonNull A ipv6Address(@NonNull A6 addr);
62 protected abstract @NonNull ANZ ipv6AddressNoZone(@NonNull A6NZ addr);
64 protected abstract @Nullable A4 maybeIpv4Address(@NonNull A addr);
66 protected abstract @Nullable A4NZ maybeIpv4AddressNoZone(@NonNull ANZ addr);
68 protected abstract @Nullable A6 maybeIpv6Address(@NonNull A addr);
70 protected abstract @Nullable A6NZ maybeIpv6AddressNoZone(@NonNull ANZ addr);
72 protected abstract @NonNull P ipv4Prefix(@NonNull P4 addr);
74 protected abstract @NonNull P ipv6Prefix(@NonNull P6 addr);
76 protected abstract @NonNull String ipv4AddressString(@NonNull A4 addr);
78 protected abstract @NonNull String ipv6AddressString(@NonNull A6 addr);
80 protected abstract @NonNull String ipv4PrefixString(@NonNull P4 prefix);
82 protected abstract @NonNull String ipv6PrefixString(@NonNull P6 prefix);
85 * Create an IpAddress by interpreting input bytes as an IPv4 or IPv6 address, based on array length.
87 * @param bytes 4-byte (IPv4) or 6-byte (IPv6) array
88 * @return An IpAddress object
89 * @throws IllegalArgumentException if bytes has length different from 4 or 6
90 * @throws NullPointerException if bytes is null
92 public final @NonNull A ipAddressFor(final byte @NonNull[] bytes) {
93 switch (bytes.length) {
95 return ipv4Address(ipv4AddressFor(bytes));
97 return ipv6Address(ipv6AddressFor(bytes));
99 throw new IllegalArgumentException("Invalid array length " + bytes.length);
103 public final @NonNull A ipAddressFor(final @NonNull InetAddress addr) {
104 requireNonNull(addr, "Address must not be null");
105 if (addr instanceof Inet4Address) {
106 return ipv4Address(ipv4AddressFor(addr));
107 } else if (addr instanceof Inet6Address) {
108 return ipv6Address(ipv6AddressFor(addr));
110 throw new IllegalArgumentException("Unhandled address " + addr);
115 * Create an IpAddress by interpreting input bytes as an IPv4 or IPv6 address, based on array length.
117 * @param bytes 4-byte (IPv4) or 6-byte (IPv6) array
118 * @return A no-zone IpAddress object
119 * @throws IllegalArgumentException if bytes has length different from 4 or 6
120 * @throws NullPointerException if bytes is null
122 public final @NonNull ANZ ipAddressNoZoneFor(final byte @NonNull[] bytes) {
123 switch (bytes.length) {
125 return ipv4AddressNoZone(ipv4AddressNoZoneFor(bytes));
127 return ipv6AddressNoZone(ipv6AddressNoZoneFor(bytes));
129 throw new IllegalArgumentException("Invalid array length " + bytes.length);
133 public final @NonNull ANZ ipAddressNoZoneFor(final @NonNull InetAddress addr) {
134 requireNonNull(addr, "Address must not be null");
135 if (addr instanceof Inet4Address) {
136 return ipv4AddressNoZone(ipv4AddressNoZoneFor(addr));
137 } else if (addr instanceof Inet6Address) {
138 return ipv6AddressNoZone(ipv6AddressNoZoneFor(addr));
140 throw new IllegalArgumentException("Unhandled address " + addr);
145 * Create an IpPrefix by combining the address with a mask. The address
146 * bytes are interpreted as an address and the specified mask is concatenated to
147 * it. The address bytes are not masked.
149 * @param bytes Input address as a 4-byte (IPv4) or 16-byte (IPv6) array
150 * @param mask Prefix mask
151 * @return An IpPrefix object
152 * @throws IllegalArgumentException if bytes has length different from 4 or 16 or if mask is not
153 * in range 0-32 or 0-128 respectively
154 * @throws NullPointerException if bytes is null
156 public final @NonNull P ipPrefixFor(final byte @NonNull[] bytes, final int mask) {
157 switch (bytes.length) {
159 return ipv4Prefix(ipv4PrefixFor(bytes, mask));
161 return ipv6Prefix(ipv6PrefixFor(bytes, mask));
163 throw new IllegalArgumentException("Invalid array length " + bytes.length);
167 public final @NonNull P ipPrefixFor(final @NonNull InetAddress addr, final int mask) {
168 requireNonNull(addr, "Address must not be null");
169 if (addr instanceof Inet4Address) {
170 return ipv4Prefix(ipv4PrefixFor(addr, mask));
171 } else if (addr instanceof Inet6Address) {
172 return ipv6Prefix(ipv6PrefixFor(addr, mask));
174 throw new IllegalArgumentException("Unhandled address " + addr);
178 public final @NonNull InetAddress inetAddressFor(final @NonNull A addr) {
179 final A4 v4 = maybeIpv4Address(addr);
181 return inet4AddressFor(v4);
183 final A6 v6 = maybeIpv6Address(addr);
184 checkArgument(v6 != null, "Address %s is neither IPv4 nor IPv6", addr);
185 return inet6AddressFor(v6);
188 public final @NonNull InetAddress inetAddressForNoZone(final @NonNull ANZ addr) {
189 final A4NZ v4 = maybeIpv4AddressNoZone(addr);
191 return inet4AddressForNoZone(v4);
193 final A6NZ v6 = maybeIpv6AddressNoZone(addr);
194 checkArgument(v6 != null, "Address %s is neither IPv4 nor IPv6", addr);
195 return inet6AddressForNoZone(v6);
199 public final @NonNull Inet4Address inet4AddressFor(final @NonNull A4 addr) {
201 return (Inet4Address) InetAddress.getByAddress(ipv4AddressBytes(addr));
202 } catch (UnknownHostException e) {
203 throw new IllegalArgumentException("Invalid address " + addr, e);
207 public final @NonNull Inet4Address inet4AddressForNoZone(final @NonNull A4NZ addr) {
209 return (Inet4Address) InetAddress.getByAddress(ipv4AddressNoZoneBytes(addr));
210 } catch (UnknownHostException e) {
211 throw new IllegalArgumentException("Invalid address " + addr, e);
215 public final @NonNull Inet6Address inet6AddressFor(final @NonNull A6 addr) {
217 return (Inet6Address) InetAddress.getByAddress(ipv6AddressBytes(addr));
218 } catch (UnknownHostException e) {
219 throw new IllegalArgumentException("Invalid address " + addr, e);
223 public final @NonNull Inet6Address inet6AddressForNoZone(final @NonNull A6NZ addr) {
225 return (Inet6Address) InetAddress.getByAddress(ipv6AddressNoZoneBytes(addr));
226 } catch (UnknownHostException e) {
227 throw new IllegalArgumentException("Invalid address " + addr, e);
232 * Create an Ipv4Address by interpreting input bytes as an IPv4 address.
234 * @param bytes 4-byte array
235 * @return An Ipv4Address object
236 * @throws IllegalArgumentException if bytes has length different from 4
237 * @throws NullPointerException if bytes is null
239 public final @NonNull A4 ipv4AddressFor(final byte @NonNull[] bytes) {
240 return address4Factory.newInstance(addressStringV4(bytes));
244 * Create an Ipv4Address by interpreting an {@link Inet4Address}.
246 * @param addr An {@link Inet4Address}
247 * @return An Ipv4Address object
248 * @throws IllegalArgumentException if addr is not an {@link Inet4Address}
249 * @throws NullPointerException if addr is null
251 public final @NonNull A4 ipv4AddressFor(final @NonNull InetAddress addr) {
252 return address4Factory.newInstance(addressStringV4(addr));
256 * Create an Ipv4Address by interpreting input 32 bits as an IPv4 address in big-endian format.
258 * @param bits 32 bits, big endian
259 * @return An Ipv4Address object
261 public final @NonNull A4 ipv4AddressFor(final int bits) {
262 return address4Factory.newInstance(Ipv4Utils.addressString(bits));
266 * Create an Ipv4AddressNoZone by interpreting input bytes as an IPv4 address.
268 * @param bytes 4-byte array
269 * @return An Ipv4AddressNoZone object
270 * @throws IllegalArgumentException if bytes has length different from 4
271 * @throws NullPointerException if bytes is null
273 public final @NonNull A4NZ ipv4AddressNoZoneFor(final byte @NonNull[] bytes) {
274 return address4NoZoneFactory.newInstance(addressStringV4(bytes));
278 * Create an Ipv4AddressNoZone by interpreting an {@link Inet4Address}.
280 * @param addr An {@link Inet4Address}
281 * @return An Ipv4AddressNoZone object
282 * @throws IllegalArgumentException if addr is not an {@link Inet4Address}
283 * @throws NullPointerException if addr is null
285 public final @NonNull A4NZ ipv4AddressNoZoneFor(final @NonNull InetAddress addr) {
286 return address4NoZoneFactory.newInstance(addressStringV4(addr));
290 * Create an Ipv4AddressNoZone by interpreting input 32 bits as an IPv4 address in big-endian format.
292 * @param bits 32 bits, big endian
293 * @return An Ipv4AddressNoZone object
295 public final @NonNull A4NZ ipv4AddressNoZoneFor(final int bits) {
296 return address4NoZoneFactory.newInstance(Ipv4Utils.addressString(bits));
300 * Create an Ipv4AddressNoZone by interpreting an Ipv4Address.
302 * @param addr An Ipv4Address
303 * @return An Ipv4AddressNoZone object
304 * @throws NullPointerException if addr is null
306 public final @NonNull A4NZ ipv4AddressNoZoneFor(final @NonNull A4 addr) {
307 requireNonNull(addr, "Address must not be null");
308 return addr4nzClass.isInstance(addr) ? addr4nzClass.cast(addr)
309 : address4NoZoneFactory.newInstance(stripZone(ipv4AddressString(addr)));
312 public final @NonNull A4 ipv4AddressFrom(final @NonNull P4 prefix) {
313 return prefixToAddress(address4Factory, ipv4PrefixString(prefix));
316 public final @NonNull A4NZ ipv4AddressNoZoneFrom(final @NonNull P4 prefix) {
317 return prefixToAddress(address4NoZoneFactory, ipv4PrefixString(prefix));
320 public final byte @NonNull[] ipv4AddressBytes(final @NonNull A4 addr) {
322 * This implementation relies heavily on the input string having been validated to comply with
323 * the Ipv4Address pattern, which may include a zone index.
325 final String str = ipv4AddressString(addr);
326 final int percent = str.indexOf('%');
327 return Ipv4Utils.addressBytes(str, percent == -1 ? str.length() : percent);
330 public final int ipv4AddressBits(final @NonNull A4 addr) {
331 final String str = ipv4AddressString(addr);
332 final int percent = str.indexOf('%');
333 return Ipv4Utils.addressBits(str, percent == -1 ? str.length() : percent);
336 public final byte @NonNull[] ipv4AddressNoZoneBytes(final @NonNull A4NZ addr) {
338 * This implementation relies heavily on the input string having been validated to comply with
339 * the Ipv4AddressNoZone pattern, which must not include a zone index.
341 final String str = ipv4AddressString(addr);
342 return Ipv4Utils.addressBytes(str, str.length());
345 public final int ipv4AddressNoZoneBits(final @NonNull A4NZ addr) {
346 final String str = ipv4AddressString(addr);
347 return Ipv4Utils.addressBits(str, str.length());
351 * Create a /32 Ipv4Prefix by interpreting input bytes as an IPv4 address.
353 * @param bytes four-byte array
354 * @return An Ipv4Prefix object
355 * @throws IllegalArgumentException if bytes has length different from 4
356 * @throws NullPointerException if bytes is null
358 public final @NonNull P4 ipv4PrefixFor(final byte @NonNull[] bytes) {
359 return prefix4Factory.newInstance(prefixStringV4(bytes));
363 * Create a Ipv4Prefix by combining the address with a mask. The address
364 * bytes are interpreted as an address and the specified mask is concatenated to
365 * it. The address bytes are not masked, hence input <code>address = { 1, 2, 3, 4 }</code>
366 * and <code>mask=24</code> will result in <code>1.2.3.4/24</code>.
368 * @param address Input address as a 4-byte array
369 * @param mask Prefix mask
370 * @return An Ipv4Prefix object
371 * @throws IllegalArgumentException if bytes has length different from 4 or if mask is not in range 0-32
372 * @throws NullPointerException if bytes is null
374 public final @NonNull P4 ipv4PrefixFor(final byte @NonNull[] address, final int mask) {
375 return prefix4Factory.newInstance(prefixStringV4(address, mask));
379 * Create a /32 Ipv4Prefix for an {@link Inet4Address}.
381 * @param addr An {@link Inet4Address}
382 * @return An Ipv4Prefix object
383 * @throws IllegalArgumentException if addr is not an Inet4Address
384 * @throws NullPointerException if addr is null
386 public final @NonNull P4 ipv4PrefixFor(final @NonNull InetAddress addr) {
387 return prefix4Factory.newInstance(addressStringV4(addr) + "/32");
391 * Create a Ipv4Prefix by combining the address with a mask. The address bytes are not masked.
393 * @param addr An {@link Inet4Address}
394 * @param mask Prefix mask
395 * @return An Ipv4Prefix object
396 * @throws IllegalArgumentException if addr is not an Inet4Address or if mask is not in range 0-32
397 * @throws NullPointerException if addr is null
399 public final @NonNull P4 ipv4PrefixFor(final @NonNull InetAddress addr, final int mask) {
400 return newIpv4Prefix(addressStringV4(addr), mask);
403 public final @NonNull P4 ipv4PrefixFor(final @NonNull A4 addr) {
404 requireNonNull(addr, "Address must not be null");
405 return prefix4Factory.newInstance(stripZone(ipv4AddressString(addr)) + "/32");
408 public final @NonNull P4 ipv4PrefixFor(final @NonNull A4 addr, final int mask) {
409 requireNonNull(addr, "Address must not be null");
410 return newIpv4Prefix(stripZone(ipv4AddressString(addr)), mask);
413 public final @NonNull P4 ipv4PrefixForNoZone(final @NonNull A4NZ addr) {
414 requireNonNull(addr, "Address must not be null");
415 return prefix4Factory.newInstance(ipv4AddressString(addr) + "/32");
418 public final @NonNull P4 ipv4PrefixForNoZone(final @NonNull A4NZ addr, final int mask) {
419 requireNonNull(addr, "Address must not be null");
420 return newIpv4Prefix(ipv4AddressString(addr), mask);
423 public final @NonNull P4 ipv4PrefixForShort(final byte @NonNull[] address, final int mask) {
425 // Easy case, reuse the template
426 return prefix4Factory.getTemplate();
429 return v4PrefixForShort(address, 0, mask / Byte.SIZE + (mask % Byte.SIZE == 0 ? 0 : 1), mask);
432 public final @NonNull P4 ipv4PrefixForShort(final byte @NonNull[] array, final int startOffset, final int mask) {
434 // Easy case, reuse the template
435 return prefix4Factory.getTemplate();
438 return v4PrefixForShort(array, startOffset, mask / Byte.SIZE + (mask % Byte.SIZE == 0 ? 0 : 1), mask);
441 private static String stripZone(final String str) {
442 final int percent = str.indexOf('%');
443 return percent == -1 ? str : str.substring(0, percent);
446 private @NonNull P4 newIpv4Prefix(final String addr, final int mask) {
447 checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
448 return prefix4Factory.newInstance(addr + '/' + mask);
451 public final @NonNull Entry<A4, Integer> splitIpv4Prefix(final @NonNull P4 prefix) {
452 return splitPrefix(address4Factory, ipv4PrefixString(prefix));
455 public final @NonNull Entry<A4NZ, Integer> splitIpv4PrefixNoZone(final @NonNull P4 prefix) {
456 return splitPrefix(address4NoZoneFactory, ipv4PrefixString(prefix));
459 public final byte @NonNull[] ipv4PrefixToBytes(final @NonNull P4 prefix) {
460 final String str = ipv4PrefixString(prefix);
461 final int slash = str.lastIndexOf('/');
463 final byte[] bytes = new byte[INET4_LENGTH + 1];
464 Ipv4Utils.fillIpv4Bytes(bytes, 0, str, 0, slash);
465 bytes[INET4_LENGTH] = (byte)Integer.parseInt(str.substring(slash + 1), 10);
470 * Create an Ipv6Address by interpreting input bytes as an IPv6 address.
472 * @param bytes 16-byte array
473 * @return An Ipv6Address object
474 * @throws IllegalArgumentException if bytes has length different from 16
475 * @throws NullPointerException if bytes is null
477 public final @NonNull A6 ipv6AddressFor(final byte @NonNull[] bytes) {
478 return address6Factory.newInstance(addressStringV6(bytes));
482 * Create an Ipv6Address by interpreting an {@link Inet6Address}.
484 * @param addr An {@link Inet6Address}
485 * @return An Ipv6Address object
486 * @throws IllegalArgumentException if addr is not an {@link Inet6Address}
487 * @throws NullPointerException if addr is null
489 public final @NonNull A6 ipv6AddressFor(final @NonNull InetAddress addr) {
490 return address6Factory.newInstance(addressStringV6(addr));
494 * Create an Ipv6AddressNoZone by interpreting input bytes as an IPv6 address.
496 * @param bytes 16-byte array
497 * @return An Ipv6Address object
498 * @throws IllegalArgumentException if bytes has length different from 16
499 * @throws NullPointerException if bytes is null
501 public final @NonNull A6NZ ipv6AddressNoZoneFor(final byte @NonNull[] bytes) {
502 return address6NoZoneFactory.newInstance(addressStringV6(bytes));
506 * Create an Ipv6AddressNoZone by interpreting an {@link Inet6Address}.
508 * @param addr An {@link Inet6Address}
509 * @return An Ipv6AddressNoZone object
510 * @throws IllegalArgumentException if addr is not an {@link Inet6Address}
511 * @throws NullPointerException if addr is null
513 public final @NonNull A6NZ ipv6AddressNoZoneFor(final @NonNull InetAddress addr) {
514 return address6NoZoneFactory.newInstance(addressStringV6(addr));
518 * Create an Ipv6AddressNoZone by interpreting an Ipv6Address.
520 * @param addr An Ipv6Address
521 * @return An Ipv6AddressNoZone object
522 * @throws NullPointerException if addr is null
524 public final @NonNull A6NZ ipv6AddressNoZoneFor(final @NonNull A6 addr) {
525 requireNonNull(addr, "Address must not be null");
526 return addr6nzClass.isInstance(addr) ? addr6nzClass.cast(addr)
527 : address6NoZoneFactory.newInstance(stripZone(ipv6AddressString(addr)));
530 public final @NonNull A6 ipv6AddressFrom(final @NonNull P6 prefix) {
531 return prefixToAddress(address6Factory, ipv6PrefixString(prefix));
534 public final @NonNull A6NZ ipv6AddressNoZoneFrom(final @NonNull P6 prefix) {
535 return prefixToAddress(address6NoZoneFactory, ipv6PrefixString(prefix));
538 public final byte @NonNull[] ipv6AddressBytes(final @NonNull A6 addr) {
539 final String str = ipv6AddressString(addr);
540 final int percent = str.indexOf('%');
541 return ipv6StringBytes(str, percent == -1 ? str.length() : percent);
544 public final byte @NonNull[] ipv6AddressNoZoneBytes(final @NonNull A6NZ addr) {
545 final String str = ipv6AddressString(addr);
546 return ipv6StringBytes(str, str.length());
549 private static byte @NonNull[] ipv6StringBytes(final @NonNull String str, final int limit) {
550 final byte[] bytes = new byte[INET6_LENGTH];
551 Ipv6Utils.fillIpv6Bytes(bytes, str, limit);
556 * Create a /128 Ipv6Prefix by interpreting input bytes as an IPv6 address.
558 * @param bytes four-byte array
559 * @return An Ipv6Prefix object
560 * @throws IllegalArgumentException if bytes has length different from 16
561 * @throws NullPointerException if bytes is null
563 public final @NonNull P6 ipv6PrefixFor(final byte @NonNull[] bytes) {
564 return prefix6Factory.newInstance(addressStringV6(bytes) + "/128");
568 * Create a Ipv6Prefix by combining the address with a mask. The address
569 * bytes are interpreted as an address and the specified mask is concatenated to
570 * it. The address bytes are not masked.
572 * @param address Input address as a 16-byte array
573 * @param mask Prefix mask
574 * @return An Ipv6Prefix object
575 * @throws IllegalArgumentException if bytes has length different from 16 or if mask is not in range 0-128
576 * @throws NullPointerException if bytes is null
578 public final @NonNull P6 ipv6PrefixFor(final byte @NonNull[] address, final int mask) {
579 checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
580 return prefix6Factory.newInstance(addressStringV6(address) + '/' + mask);
584 * Create a /128 Ipv6Prefix by interpreting input bytes as an IPv6 address.
586 * @param addr an {@link Inet6Address}
587 * @return An Ipv6Prefix object
588 * @throws IllegalArgumentException if addr is not an Inet6Address
589 * @throws NullPointerException if addr is null
591 public final @NonNull P6 ipv6PrefixFor(final @NonNull InetAddress addr) {
592 return prefix6Factory.newInstance(addressStringV6(addr) + "/128");
596 * Create a Ipv6Prefix by combining the address with a mask. The address
597 * bytes are interpreted as an address and the specified mask is concatenated to
598 * it. The address bytes are not masked.
600 * @param addr Input address
601 * @param mask Prefix mask
602 * @return An Ipv6Prefix object
603 * @throws IllegalArgumentException if addr is not an Inet6Address or if mask is not in range 0-128
604 * @throws NullPointerException if addr is null
606 public final @NonNull P6 ipv6PrefixFor(final @NonNull InetAddress addr, final int mask) {
607 checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
608 return prefix6Factory.newInstance(addressStringV6(addr) + '/' + mask);
611 public final @NonNull P6 ipv6PrefixFor(final @NonNull A6 addr) {
612 requireNonNull(addr, "Address must not be null");
613 return prefix6Factory.newInstance(stripZone(ipv6AddressString(addr)) + "/128");
616 public final @NonNull P6 ipv6PrefixFor(final @NonNull A6 addr, final int mask) {
617 requireNonNull(addr, "Address must not be null");
618 return newIpv6Prefix(stripZone(ipv6AddressString(addr)), mask);
621 public final @NonNull P6 ipv6PrefixForNoZone(final @NonNull A6NZ addr) {
622 requireNonNull(addr, "Address must not be null");
623 return prefix6Factory.newInstance(ipv6AddressString(addr) + "/128");
626 public final @NonNull P6 ipv6PrefixForNoZone(final @NonNull A6NZ addr, final int mask) {
627 requireNonNull(addr, "Address must not be null");
628 return newIpv6Prefix(ipv6AddressString(addr), mask);
631 public final @NonNull P6 ipv6PrefixForShort(final byte @NonNull[] address, final int mask) {
632 return ipv6PrefixForShort(address, 0, mask);
635 public final @NonNull P6 ipv6PrefixForShort(final byte @NonNull[] array, final int startOffset, final int mask) {
637 // Easy case, reuse the template
638 return prefix6Factory.getTemplate();
641 checkArgument(mask > 0 && mask <= 128, "Invalid mask %s", mask);
642 final int size = mask / Byte.SIZE + (mask % Byte.SIZE == 0 ? 0 : 1);
644 // Until we can instantiate an IPv6 address for a partial array, use a temporary buffer
645 byte[] tmp = new byte[INET6_LENGTH];
646 System.arraycopy(array, startOffset, tmp, 0, size);
647 return ipv6PrefixFor(tmp, mask);
650 private P6 newIpv6Prefix(final String addr, final int mask) {
651 checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
652 return prefix6Factory.newInstance(addr + '/' + mask);
655 public final @NonNull Entry<A6, Integer> splitIpv6Prefix(final @NonNull P6 prefix) {
656 return splitPrefix(address6Factory, ipv6PrefixString(prefix));
659 public final @NonNull Entry<A6NZ, Integer> splitIpv6PrefixNoZone(final @NonNull P6 prefix) {
660 return splitPrefix(address6NoZoneFactory, ipv6PrefixString(prefix));
663 private static <T> @NonNull T prefixToAddress(final StringValueObjectFactory<T> factory, final String str) {
664 return factory.newInstance(str.substring(0, str.lastIndexOf('/')));
667 private static <T> @NonNull Entry<T, Integer> splitPrefix(final StringValueObjectFactory<T> factory,
669 final int slash = str.lastIndexOf('/');
670 return new SimpleImmutableEntry<>(factory.newInstance(str.substring(0, slash)),
671 Integer.valueOf(str.substring(slash + 1)));
674 public final byte @NonNull[] ipv6PrefixToBytes(final @NonNull P6 prefix) {
675 final String str = ipv6PrefixString(prefix);
676 final byte[] bytes = new byte[INET6_LENGTH + 1];
677 final int slash = str.lastIndexOf('/');
678 Ipv6Utils.fillIpv6Bytes(bytes, str, slash);
679 bytes[INET6_LENGTH] = (byte)Integer.parseInt(str.substring(slash + 1), 10);
683 private static void appendIpv4String(final StringBuilder sb, final byte @NonNull[] bytes) {
684 checkArgument(bytes.length == INET4_LENGTH, "IPv4 address length is 4 bytes");
686 sb.append(Byte.toUnsignedInt(bytes[0]));
687 for (int i = 1; i < INET4_LENGTH; ++i) {
688 sb.append('.').append(Byte.toUnsignedInt(bytes[i]));
692 static String addressStringV4(final byte @NonNull[] bytes) {
693 final StringBuilder sb = new StringBuilder(15);
694 appendIpv4String(sb, bytes);
695 return sb.toString();
698 private static @NonNull String addressStringV4(final InetAddress addr) {
699 requireNonNull(addr, "Address must not be null");
700 checkArgument(addr instanceof Inet4Address, "Address has to be an Inet4Address");
701 return addr.getHostAddress();
704 private static String addressStringV6(final byte @NonNull[] bytes) {
705 checkArgument(bytes.length == INET6_LENGTH, "IPv6 address length is 16 bytes");
708 return addressStringV6(Inet6Address.getByAddress(null, bytes, null));
709 } catch (UnknownHostException e) {
710 throw new IllegalArgumentException(String.format("Invalid input %s", bytes), e);
714 private static String addressStringV6(final InetAddress addr) {
715 requireNonNull(addr, "Address must not be null");
716 checkArgument(addr instanceof Inet6Address, "Address has to be an Inet6Address");
717 return addressStringV6((Inet6Address) addr);
720 private static String addressStringV6(final Inet6Address addr) {
721 return InetAddresses.toAddrString(addr);
724 private static String prefixStringV4(final byte @NonNull[] bytes) {
725 final StringBuilder sb = new StringBuilder(18);
726 appendIpv4String(sb, bytes);
727 return sb.append("/32").toString();
730 private static String prefixStringV4(final byte @NonNull[] bytes, final int mask) {
731 checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
733 final StringBuilder sb = new StringBuilder(18);
734 appendIpv4String(sb, bytes);
735 return sb.append('/').append(mask).toString();
738 private P4 v4PrefixForShort(final byte @NonNull[] array, final int startOffset, final int size, final int mask) {
739 if (startOffset == 0 && size == INET4_LENGTH && array.length == INET4_LENGTH) {
740 // Easy case, fall back to non-short
741 return ipv4PrefixFor(array, mask);
744 final StringBuilder sb = new StringBuilder(18);
747 sb.append(Byte.toUnsignedInt(array[startOffset]));
748 for (int i = 1; i < size; i++) {
749 sb.append('.').append(Byte.toUnsignedInt(array[startOffset + i]));
753 for (int i = size; i < INET4_LENGTH; i++) {
758 checkArgument(mask > 0 && mask <= 32, "Invalid mask %s", mask);
759 sb.append('/').append(mask);
761 return prefix4Factory.newInstance(sb.toString());