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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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 android.net;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Log;
import java.net.InetAddress;
import java.net.UnknownHostException;
/** @hide */
public final class IpSecConfig implements Parcelable {
private static final String TAG = "IpSecConfig";
//MODE_TRANSPORT or MODE_TUNNEL
int mode;
// For tunnel mode
InetAddress localAddress;
InetAddress remoteAddress;
// Limit selection by network interface
Network network;
public static class Flow {
// Minimum requirements for identifying a transform
// SPI identifying the IPsec flow in packet processing
// and a remote IP address
int spiResourceId;
// Encryption Algorithm
IpSecAlgorithm encryption;
// Authentication Algorithm
IpSecAlgorithm authentication;
@Override
public String toString() {
return new StringBuilder()
.append("{spiResourceId=")
.append(spiResourceId)
.append(", encryption=")
.append(encryption)
.append(", authentication=")
.append(authentication)
.append("}")
.toString();
}
}
final Flow[] flow = new Flow[] {new Flow(), new Flow()};
// For tunnel mode IPv4 UDP Encapsulation
// IpSecTransform#ENCAP_ESP_*, such as ENCAP_ESP_OVER_UDP_IKE
int encapType;
int encapLocalPortResourceId;
int encapRemotePort;
// An interval, in seconds between the NattKeepalive packets
int nattKeepaliveInterval;
// Transport or Tunnel
public int getMode() {
return mode;
}
public InetAddress getLocalAddress() {
return localAddress;
}
public int getSpiResourceId(int direction) {
return flow[direction].spiResourceId;
}
public InetAddress getRemoteAddress() {
return remoteAddress;
}
public IpSecAlgorithm getEncryption(int direction) {
return flow[direction].encryption;
}
public IpSecAlgorithm getAuthentication(int direction) {
return flow[direction].authentication;
}
public Network getNetwork() {
return network;
}
public int getEncapType() {
return encapType;
}
public int getEncapLocalResourceId() {
return encapLocalPortResourceId;
}
public int getEncapRemotePort() {
return encapRemotePort;
}
public int getNattKeepaliveInterval() {
return nattKeepaliveInterval;
}
// Parcelable Methods
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
// TODO: Use a byte array or other better method for storing IPs that can also include scope
out.writeString((localAddress != null) ? localAddress.getHostAddress() : null);
// TODO: Use a byte array or other better method for storing IPs that can also include scope
out.writeString((remoteAddress != null) ? remoteAddress.getHostAddress() : null);
out.writeParcelable(network, flags);
out.writeInt(flow[IpSecTransform.DIRECTION_IN].spiResourceId);
out.writeParcelable(flow[IpSecTransform.DIRECTION_IN].encryption, flags);
out.writeParcelable(flow[IpSecTransform.DIRECTION_IN].authentication, flags);
out.writeInt(flow[IpSecTransform.DIRECTION_OUT].spiResourceId);
out.writeParcelable(flow[IpSecTransform.DIRECTION_OUT].encryption, flags);
out.writeParcelable(flow[IpSecTransform.DIRECTION_OUT].authentication, flags);
out.writeInt(encapType);
out.writeInt(encapLocalPortResourceId);
out.writeInt(encapRemotePort);
}
// Package Private: Used by the IpSecTransform.Builder;
// there should be no public constructor for this object
IpSecConfig() {}
private static InetAddress readInetAddressFromParcel(Parcel in) {
String addrString = in.readString();
if (addrString == null) {
return null;
}
try {
return InetAddress.getByName(addrString);
} catch (UnknownHostException e) {
Log.wtf(TAG, "Invalid IpAddress " + addrString);
return null;
}
}
private IpSecConfig(Parcel in) {
localAddress = readInetAddressFromParcel(in);
remoteAddress = readInetAddressFromParcel(in);
network = (Network) in.readParcelable(Network.class.getClassLoader());
flow[IpSecTransform.DIRECTION_IN].spiResourceId = in.readInt();
flow[IpSecTransform.DIRECTION_IN].encryption =
(IpSecAlgorithm) in.readParcelable(IpSecAlgorithm.class.getClassLoader());
flow[IpSecTransform.DIRECTION_IN].authentication =
(IpSecAlgorithm) in.readParcelable(IpSecAlgorithm.class.getClassLoader());
flow[IpSecTransform.DIRECTION_OUT].spiResourceId = in.readInt();
flow[IpSecTransform.DIRECTION_OUT].encryption =
(IpSecAlgorithm) in.readParcelable(IpSecAlgorithm.class.getClassLoader());
flow[IpSecTransform.DIRECTION_OUT].authentication =
(IpSecAlgorithm) in.readParcelable(IpSecAlgorithm.class.getClassLoader());
encapType = in.readInt();
encapLocalPortResourceId = in.readInt();
encapRemotePort = in.readInt();
}
@Override
public String toString() {
StringBuilder strBuilder = new StringBuilder();
strBuilder
.append("{mode=")
.append(mode == IpSecTransform.MODE_TUNNEL ? "TUNNEL" : "TRANSPORT")
.append(", localAddress=")
.append(localAddress)
.append(", remoteAddress=")
.append(remoteAddress)
.append(", network=")
.append(network)
.append(", encapType=")
.append(encapType)
.append(", encapLocalPortResourceId=")
.append(encapLocalPortResourceId)
.append(", encapRemotePort=")
.append(encapRemotePort)
.append(", nattKeepaliveInterval=")
.append(nattKeepaliveInterval)
.append(", flow[OUT]=")
.append(flow[IpSecTransform.DIRECTION_OUT])
.append(", flow[IN]=")
.append(flow[IpSecTransform.DIRECTION_IN])
.append("}");
return strBuilder.toString();
}
public static final Parcelable.Creator<IpSecConfig> CREATOR =
new Parcelable.Creator<IpSecConfig>() {
public IpSecConfig createFromParcel(Parcel in) {
return new IpSecConfig(in);
}
public IpSecConfig[] newArray(int size) {
return new IpSecConfig[size];
}
};
}
|
