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
|
/*
* Copyright (C) 2018 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 com.android.internal.telephony.uicc.euicc;
import com.android.internal.telephony.uicc.asn1.Asn1Decoder;
import com.android.internal.telephony.uicc.asn1.Asn1Node;
import com.android.internal.telephony.uicc.asn1.InvalidAsn1DataException;
import com.android.internal.telephony.uicc.asn1.TagNotFoundException;
import com.android.telephony.Rlog;
import java.util.Arrays;
/**
* This represents the version of GSMA SGP.22 spec in the form of 3 numbers: major, minor, and
* revision.
*/
public final class EuiccSpecVersion implements Comparable<EuiccSpecVersion> {
private static final String LOG_TAG = "EuiccSpecVer";
// ASN.1 Tags
private static final int TAG_ISD_R_APP_TEMPLATE = 0xE0;
private static final int TAG_VERSION = 0x82;
private final int[] mVersionValues = new int[3];
/**
* Parses the response of opening a logical channel to get spec version of the eUICC card.
*
* @return Parsed spec version. If any error is encountered, null will be returned.
*/
public static EuiccSpecVersion fromOpenChannelResponse(byte[] response) {
Asn1Node node;
try {
Asn1Decoder decoder = new Asn1Decoder(response);
if (!decoder.hasNextNode()) {
return null;
}
node = decoder.nextNode();
} catch (InvalidAsn1DataException e) {
Rlog.e(LOG_TAG, "Cannot parse the select response of ISD-R.", e);
return null;
}
try {
byte[] versionType;
if (node.getTag() == TAG_ISD_R_APP_TEMPLATE) {
versionType = node.getChild(TAG_VERSION).asBytes();
} else {
versionType =
node.getChild(TAG_ISD_R_APP_TEMPLATE, TAG_VERSION).asBytes();
}
if (versionType.length == 3) {
return new EuiccSpecVersion(versionType);
} else {
Rlog.e(LOG_TAG, "Cannot parse select response of ISD-R: " + node.toHex());
}
} catch (InvalidAsn1DataException | TagNotFoundException e) {
Rlog.e(LOG_TAG, "Cannot parse select response of ISD-R: " + node.toHex());
}
return null;
}
public EuiccSpecVersion(int major, int minor, int revision) {
mVersionValues[0] = major;
mVersionValues[1] = minor;
mVersionValues[2] = revision;
}
/**
* @param version The version bytes from ASN1 data. The length must be 3.
*/
public EuiccSpecVersion(byte[] version) {
mVersionValues[0] = version[0] & 0xFF;
mVersionValues[1] = version[1] & 0xFF;
mVersionValues[2] = version[2] & 0xFF;
}
public int getMajor() {
return mVersionValues[0];
}
public int getMinor() {
return mVersionValues[1];
}
public int getRevision() {
return mVersionValues[2];
}
@Override
public int compareTo(EuiccSpecVersion that) {
if (getMajor() > that.getMajor()) {
return 1;
} else if (getMajor() < that.getMajor()) {
return -1;
}
if (getMinor() > that.getMinor()) {
return 1;
} else if (getMinor() < that.getMinor()) {
return -1;
}
if (getRevision() > that.getRevision()) {
return 1;
} else if (getRevision() < that.getRevision()) {
return -1;
}
return 0;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
return Arrays.equals(mVersionValues, ((EuiccSpecVersion) obj).mVersionValues);
}
@Override
public int hashCode() {
return Arrays.hashCode(mVersionValues);
}
@Override
public String toString() {
return mVersionValues[0] + "." + mVersionValues[1] + "." + mVersionValues[2];
}
}
|
