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 com.google.common.annotations.Beta;
11 import com.google.common.base.Preconditions;
12 import com.google.common.net.InetAddresses;
13 import com.google.common.primitives.UnsignedBytes;
14 import java.net.Inet4Address;
15 import java.net.Inet6Address;
16 import java.net.InetAddress;
17 import java.net.UnknownHostException;
18 import java.util.AbstractMap.SimpleImmutableEntry;
19 import java.util.Map.Entry;
20 import javax.annotation.Nonnull;
21 import org.opendaylight.yangtools.yang.binding.util.StringValueObjectFactory;
24 * A set of utility methods to efficiently instantiate various ietf-inet-types DTOs.
27 public abstract class AbstractIetfInetUtil<A4, P4, A6, P6, A> {
28 private final StringValueObjectFactory<A4> address4Factory;
29 private final StringValueObjectFactory<P4> prefix4Factory;
30 private final StringValueObjectFactory<A6> address6Factory;
31 private final StringValueObjectFactory<P6> prefix6Factory;
33 protected AbstractIetfInetUtil(final Class<A4> addr4Class, final Class<P4> prefix4Class,
34 final Class<A6> addr6Class, final Class<P6> prefix6Class) {
35 this.address4Factory = StringValueObjectFactory.create(addr4Class, "0.0.0.0");
36 this.prefix4Factory = StringValueObjectFactory.create(prefix4Class, "0.0.0.0/0");
37 this.address6Factory = StringValueObjectFactory.create(addr6Class, "::0");
38 this.prefix6Factory = StringValueObjectFactory.create(prefix6Class, "::0/0");
41 protected abstract A ipv4Address(A4 addr);
42 protected abstract A ipv6Address(A6 addr);
43 protected abstract String ipv4AddressString(A4 addr);
44 protected abstract String ipv6AddressString(A6 addr);
45 protected abstract String ipv4PrefixString(P4 prefix);
46 protected abstract String ipv6PrefixString(P6 prefix);
48 @Nonnull public final A ipAddressFor(@Nonnull final byte[] bytes) {
49 switch (bytes.length) {
51 return ipv4Address(ipv4AddressFor(bytes));
53 return ipv6Address(ipv6AddressFor(bytes));
55 throw new IllegalArgumentException("Invalid array length " + bytes.length);
59 @Nonnull public final A ipAddressFor(@Nonnull final InetAddress addr) {
60 Preconditions.checkNotNull(addr, "Address must not be null");
61 if (addr instanceof Inet4Address) {
62 return ipv4Address(ipv4AddressFor(addr));
63 } else if (addr instanceof Inet6Address) {
64 return ipv6Address(ipv6AddressFor(addr));
66 throw new IllegalArgumentException("Unhandled address " + addr);
71 * Create an Ipv4Address by interpreting input bytes as an IPv4 address.
73 * @param bytes 4-byte array
74 * @return An Ipv4Address object
75 * @throws IllegalArgumentException if bytes has length different from 4
76 * @throws NullPointerException if bytes is null
78 @Nonnull public final A4 ipv4AddressFor(@Nonnull final byte[] bytes) {
79 return address4Factory.newInstance(addressStringV4(bytes));
83 * Create an Ipv4Address by interpreting an {@link Inet4Address}.
85 * @param addr An {@link Inet4Address}
86 * @return An Ipv4Address object
87 * @throws IllegalArgumentException if addr is not an {@link Inet4Address}
88 * @throws NullPointerException if addr is null
90 @Nonnull public final A4 ipv4AddressFor(@Nonnull final InetAddress addr) {
91 Preconditions.checkNotNull(addr, "Address must not be null");
92 Preconditions.checkArgument(addr instanceof Inet4Address, "Address has to be an Inet4Address");
93 return address4Factory.newInstance(addr.getHostAddress());
96 @Nonnull public final A4 ipv4AddressFrom(@Nonnull final P4 prefix) {
97 return prefixToAddress(address4Factory, ipv4PrefixString(prefix));
101 * Create a /32 Ipv4Prefix by interpreting input bytes as an IPv4 address.
103 * @param bytes four-byte array
104 * @return An Ipv4Prefix object
105 * @throws IllegalArgumentException if bytes has length different from 4
106 * @throws NullPointerException if bytes is null
108 @Nonnull public final P4 ipv4PrefixFor(@Nonnull final byte[] bytes) {
109 return prefix4Factory.newInstance(prefixStringV4(bytes));
113 * Create a Ipv4Prefix by combining the address with a mask. The address
114 * bytes are interpreted as an address and the specified mask is concatenated to
115 * it. The address bytes are not masked, hence input <code>address = { 1, 2, 3, 4 }</code>
116 * and <code>mask=24</code> will result in <code>1.2.3.4/24</code>.
118 * @param address Input address as a 4-byte array
119 * @param mask Prefix mask
120 * @return An Ipv4Prefix object
121 * @throws IllegalArgumentException if bytes has length different from 4 or if mask is not in range 0-32
122 * @throws NullPointerException if bytes is null
124 @Nonnull public final P4 ipv4PrefixFor(@Nonnull final byte[] address, final int mask) {
125 return prefix4Factory.newInstance(prefixStringV4(address, mask));
129 * Create a /32 Ipv4Prefix for an {@link Inet4Address}
131 * @param addr An {@link Inet4Address}
132 * @return An Ipv4Prefix object
133 * @throws IllegalArgumentException if addr is not an Inet4Address
134 * @throws NullPointerException if adds is null
136 @Nonnull public final P4 ipv4PrefixFor(@Nonnull final InetAddress addr) {
137 Preconditions.checkNotNull(addr, "Address must not be null");
138 Preconditions.checkArgument(addr instanceof Inet4Address, "Address has to be an Inet4Address");
139 return prefix4Factory.newInstance(addr.getHostAddress() + "/32");
143 * Create a Ipv4Prefix by combining the address with a mask. The address bytes are not masked.
145 * @param addr An {@link Inet4Address}
146 * @param mask Prefix mask
147 * @return An Ipv4Prefix object
148 * @throws IllegalArgumentException if addr is not an Inet4Address or if mask is not in range 0-32
149 * @throws NullPointerException if addr is null
151 @Nonnull public final P4 ipv4PrefixFor(@Nonnull final InetAddress addr, final int mask) {
152 Preconditions.checkNotNull(addr, "Address must not be null");
153 Preconditions.checkArgument(addr instanceof Inet4Address, "Address has to be an Inet4Address");
154 Preconditions.checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
155 return prefix4Factory.newInstance(addr.getHostAddress() + '/' + mask);
158 @Nonnull public final P4 ipv4PrefixFor(@Nonnull final A4 addr) {
159 Preconditions.checkNotNull(addr, "Address must not be null");
160 return prefix4Factory.newInstance(ipv4AddressString(addr) + "/32");
163 @Nonnull public final P4 ipv4PrefixFor(@Nonnull final A4 addr, final int mask) {
164 Preconditions.checkNotNull(addr, "Address must not be null");
165 Preconditions.checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
166 return prefix4Factory.newInstance(ipv4AddressString(addr) + '/' + mask);
169 @Nonnull public final Entry<A4, Integer> splitIpv4Prefix(@Nonnull final P4 prefix) {
170 return splitPrefix(address4Factory, ipv4PrefixString(prefix));
174 * Create an Ipv6Address by interpreting input bytes as an IPv6 address.
176 * @param bytes 16-byte array
177 * @return An Ipv6Address object
178 * @throws IllegalArgumentException if bytes has length different from 16
179 * @throws NullPointerException if bytes is null
181 @Nonnull public final A6 ipv6AddressFor(@Nonnull final byte[] bytes) {
182 return address6Factory.newInstance(addressStringV6(bytes));
186 * Create an Ipv6Address by interpreting an {@link Inet6Address}.
188 * @param addr An {@link Inet6Address}
189 * @return An Ipv6Address object
190 * @throws IllegalArgumentException if addr is not an {@link Inet6Address}
191 * @throws NullPointerException if addr is null
193 @Nonnull public final A6 ipv6AddressFor(@Nonnull final InetAddress addr) {
194 Preconditions.checkNotNull(addr, "Address must not be null");
195 Preconditions.checkArgument(addr instanceof Inet6Address, "Address has to be an Inet6Address");
196 return address6Factory.newInstance(addressStringV6(addr));
199 @Nonnull public final A6 ipv6AddressFrom(@Nonnull final P6 prefix) {
200 return prefixToAddress(address6Factory, ipv6PrefixString(prefix));
204 * Create a /128 Ipv6Prefix by interpreting input bytes as an IPv6 address.
206 * @param bytes four-byte array
207 * @return An Ipv6Prefix object
208 * @throws IllegalArgumentException if bytes has length different from 16
209 * @throws NullPointerException if bytes is null
211 @Nonnull public final P6 ipv6PrefixFor(@Nonnull final byte[] bytes) {
212 return prefix6Factory.newInstance(addressStringV6(bytes) + "/128");
216 * Create a Ipv6Prefix by combining the address with a mask. The address
217 * bytes are interpreted as an address and the specified mask is concatenated to
218 * it. The address bytes are not masked.
220 * @param address Input address as a 4-byte array
221 * @param mask Prefix mask
222 * @return An Ipv6Prefix object
223 * @throws IllegalArgumentException if bytes has length different from 16 or if mask is not in range 0-128
224 * @throws NullPointerException if bytes is null
226 @Nonnull public final P6 ipv6PrefixFor(@Nonnull final byte[] address, final int mask) {
227 Preconditions.checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
228 return prefix6Factory.newInstance(addressStringV6(address) + '/' + mask);
232 * Create a /128 Ipv6Prefix by interpreting input bytes as an IPv4 address.
234 * @param addr an {@link Inet6Address}
235 * @return An Ipv6Prefix object
236 * @throws IllegalArgumentException if addr is not an Inet6Address or if mask is not in range 0-128
237 * @throws NullPointerException if addr is null
239 @Nonnull public final P6 ipv6PrefixFor(@Nonnull final InetAddress addr) {
240 return prefix6Factory.newInstance(addressStringV6(addr) + "/128");
244 * Create a Ipv6Prefix by combining the address with a mask. The address
245 * bytes are interpreted as an address and the specified mask is concatenated to
246 * it. The address bytes are not masked.
248 * @param addr Input address
249 * @param mask Prefix mask
250 * @return An Ipv6Prefix object
251 * @throws IllegalArgumentException if addr is not an Inet6Address or if mask is not in range 0-128
252 * @throws NullPointerException if addr is null
254 @Nonnull public final P6 ipv6PrefixFor(@Nonnull final InetAddress addr, final int mask) {
255 Preconditions.checkNotNull(addr, "Address must not be null");
256 Preconditions.checkArgument(addr instanceof Inet6Address, "Address has to be an Inet6Address");
257 Preconditions.checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
258 return prefix6Factory.newInstance(addressStringV6(addr) + '/' + mask);
261 @Nonnull public final P6 ipv6PrefixFor(@Nonnull final A6 addr) {
262 Preconditions.checkNotNull(addr, "Address must not be null");
263 return prefix6Factory.newInstance(ipv6AddressString(addr) + "/128");
266 @Nonnull public final P6 ipv6PrefixFor(@Nonnull final A6 addr, final int mask) {
267 Preconditions.checkNotNull(addr, "Address must not be null");
268 Preconditions.checkArgument(mask >= 0 && mask <= 128, "Invalid mask %s", mask);
269 return prefix6Factory.newInstance(ipv6AddressString(addr) + '/' + mask);
272 @Nonnull public final Entry<A6, Integer> splitIpv6Prefix(@Nonnull final P6 prefix) {
273 return splitPrefix(address6Factory, ipv6PrefixString(prefix));
276 private static <T> T prefixToAddress(final StringValueObjectFactory<T> factory, final String str) {
277 return factory.newInstance(str.substring(0, str.lastIndexOf('/')));
280 private static <T> Entry<T, Integer> splitPrefix(final StringValueObjectFactory<T> factory, final String str) {
281 final int slash = str.lastIndexOf('/');
282 return new SimpleImmutableEntry<>(factory.newInstance(str.substring(0, slash)),
283 Integer.valueOf(str.substring(slash + 1)));
286 private static void appendIpv4String(final StringBuilder sb, final byte[] bytes) {
287 Preconditions.checkArgument(bytes.length == 4, "IPv4 address length is 4 bytes");
289 sb.append(UnsignedBytes.toInt(bytes[0]));
290 for (int i = 1; i < 4; ++i) {
292 sb.append(UnsignedBytes.toInt(bytes[i]));
296 private static String addressStringV4(final byte[] bytes) {
297 final StringBuilder sb = new StringBuilder(15);
298 appendIpv4String(sb, bytes);
299 return sb.toString();
302 private static String addressStringV6(final byte[] bytes) {
303 Preconditions.checkArgument(bytes.length == 16, "IPv6 address length is 16 bytes");
306 return addressStringV6(Inet6Address.getByAddress(bytes));
307 } catch (UnknownHostException e) {
308 throw new IllegalArgumentException(String.format("Invalid input %s", bytes), e);
312 private static String addressStringV6(final InetAddress addr) {
313 return InetAddresses.toAddrString(addr);
316 private static String prefixStringV4(final byte[] bytes) {
317 final StringBuilder sb = new StringBuilder(18);
318 appendIpv4String(sb, bytes);
320 return sb.toString();
323 private static String prefixStringV4(final byte[] bytes, final int mask) {
324 Preconditions.checkArgument(mask >= 0 && mask <= 32, "Invalid mask %s", mask);
326 final StringBuilder sb = new StringBuilder(18);
327 appendIpv4String(sb, bytes);
330 return sb.toString();