blob: 3327a8e78653a9b9d4ecb929941e3f332324775d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed 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.
*/
package org.onlab.packet.pim;
import org.onlab.packet.DeserializationException;
import org.onlab.packet.Ip4Address;
import org.onlab.packet.Ip6Address;
import org.onlab.packet.IpAddress;
import org.onlab.packet.PIM;
import java.nio.ByteBuffer;
import static org.onlab.packet.PacketUtils.checkInput;
public class PIMAddrUnicast {
private byte family;
private byte encType;
IpAddress addr;
public static final int ENC_UNICAST_IPV4_BYTE_LENGTH = 2 + Ip4Address.BYTE_LENGTH;
public static final int ENC_UNICAST_IPV6_BYTE_LENGTH = 2 + Ip6Address.BYTE_LENGTH;
/**
* PIM Encoded Source Address.
*/
public PIMAddrUnicast() {
this.family = PIM.ADDRESS_FAMILY_IP4;
this.encType = 0;
}
/**
* PIM Encoded Source Address.
*
* @param addr IPv4 or IPv6
*/
public PIMAddrUnicast(String addr) {
this.addr = IpAddress.valueOf(addr);
if (this.addr.isIp4()) {
this.family = PIM.ADDRESS_FAMILY_IP4;
} else {
this.family = PIM.ADDRESS_FAMILY_IP6;
}
this.encType = 0;
}
/**
* PIM Encoded Source Address.
*
* @param addr IPv4 or IPv6
*/
public void setAddr(IpAddress addr) {
this.addr = addr;
if (this.addr.isIp4()) {
this.family = PIM.ADDRESS_FAMILY_IP4;
} else {
this.family = PIM.ADDRESS_FAMILY_IP6;
}
}
/**
* Get the address of this encoded address.
*
* @return source address
*/
public IpAddress getAddr() {
return this.addr;
}
/**
* Get the IP family of this address: 4 or 6.
*
* @return the IP address family
*/
public int getFamily() {
return this.family;
}
/**
* The size in bytes of a serialized address.
*
* @return the number of bytes when serialized
*/
public int getByteSize() {
int size = 2;
if (addr != null) {
size += addr.isIp4() ? 4 : 16;
} else {
size += 4;
}
return size;
}
public byte[] serialize() {
int len = getByteSize();
final byte[] data = new byte[len];
final ByteBuffer bb = ByteBuffer.wrap(data);
bb.put(family);
bb.put(encType);
bb.put(addr.toOctets());
return data;
}
public PIMAddrUnicast deserialize(ByteBuffer bb) throws DeserializationException {
// Assume IPv4 for check length until we read the encoded family.
checkInput(bb.array(), bb.position(), bb.limit() - bb.position(), ENC_UNICAST_IPV4_BYTE_LENGTH);
this.family = bb.get();
// If we have IPv6 we need to ensure we have adequate buffer space.
if (this.family != PIM.ADDRESS_FAMILY_IP4 && this.family != PIM.ADDRESS_FAMILY_IP6) {
throw new DeserializationException("Invalid address family: " + this.family);
} else if (this.family == PIM.ADDRESS_FAMILY_IP6) {
// Subtract -1 from ENC_UNICAST_IPv6 BYTE_LENGTH because we read one byte for family previously.
checkInput(bb.array(), bb.position(), bb.limit() - bb.position(), ENC_UNICAST_IPV6_BYTE_LENGTH - 1);
}
this.encType = bb.get();
if (this.family == PIM.ADDRESS_FAMILY_IP4) {
this.addr = IpAddress.valueOf(bb.getInt());
} else if (this.family == PIM.ADDRESS_FAMILY_IP6) {
this.addr = Ip6Address.valueOf(bb.array(), 2);
}
return this;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 2521;
int result = super.hashCode();
result = prime * result + this.family;
result = prime * result + this.encType;
result = prime * result + this.addr.hashCode();
return result;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof PIMAddrUnicast)) {
return false;
}
final PIMAddrUnicast other = (PIMAddrUnicast) obj;
if (this.family != other.family) {
return false;
}
if (this.encType != other.encType) {
return false;
}
if (!this.addr.equals(other.addr)) {
return false;
}
return true;
}
}
|
