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
|
/*
* Copyright (C) 2014-2015 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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.openintents.openpgp.util;
import java.io.Serializable;
import java.util.List;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.text.TextUtils;
public class OpenPgpUtils {
public static final Pattern PGP_MESSAGE = Pattern.compile(
".*?(-----BEGIN PGP MESSAGE-----.*?-----END PGP MESSAGE-----).*",
Pattern.DOTALL);
public static final Pattern PGP_SIGNED_MESSAGE = Pattern.compile(
".*?(-----BEGIN PGP SIGNED MESSAGE-----.*?-----BEGIN PGP SIGNATURE-----.*?-----END PGP SIGNATURE-----).*",
Pattern.DOTALL);
public static final int PARSE_RESULT_NO_PGP = -1;
public static final int PARSE_RESULT_MESSAGE = 0;
public static final int PARSE_RESULT_SIGNED_MESSAGE = 1;
public static int parseMessage(String message) {
Matcher matcherSigned = PGP_SIGNED_MESSAGE.matcher(message);
Matcher matcherMessage = PGP_MESSAGE.matcher(message);
if (matcherMessage.matches()) {
return PARSE_RESULT_MESSAGE;
} else if (matcherSigned.matches()) {
return PARSE_RESULT_SIGNED_MESSAGE;
} else {
return PARSE_RESULT_NO_PGP;
}
}
public static boolean isAvailable(Context context) {
Intent intent = new Intent(OpenPgpApi.SERVICE_INTENT_2);
List<ResolveInfo> resInfo = context.getPackageManager().queryIntentServices(intent, 0);
return !resInfo.isEmpty();
}
public static String convertKeyIdToHex(long keyId) {
return "0x" + convertKeyIdToHex32bit(keyId >> 32) + convertKeyIdToHex32bit(keyId);
}
private static String convertKeyIdToHex32bit(long keyId) {
String hexString = Long.toHexString(keyId & 0xffffffffL).toLowerCase(Locale.ENGLISH);
while (hexString.length() < 8) {
hexString = "0" + hexString;
}
return hexString;
}
private static final Pattern USER_ID_PATTERN = Pattern.compile("^(.*?)(?: \\((.*)\\))?(?: <(.*)>)?$");
private static final Pattern EMAIL_PATTERN = Pattern.compile("^.*@.*\\..*$");
/**
* Splits userId string into naming part, email part, and comment part
* <p/>
* User ID matching:
* http://fiddle.re/t4p6f
*/
public static UserId splitUserId(final String userId) {
if (!TextUtils.isEmpty(userId)) {
final Matcher matcher = USER_ID_PATTERN.matcher(userId);
if (matcher.matches()) {
String name = matcher.group(1).isEmpty() ? null : matcher.group(1);
String comment = matcher.group(2);
String email = matcher.group(3);
if (comment == null && email == null && name != null && EMAIL_PATTERN.matcher(name).matches()) {
email = name;
name = null;
}
return new UserId(name, email, comment);
}
}
return new UserId(null, null, null);
}
/**
* Returns a composed user id. Returns null if name, email and comment are empty.
*/
public static String createUserId(UserId userId) {
StringBuilder userIdBuilder = new StringBuilder();
if (!TextUtils.isEmpty(userId.name)) {
userIdBuilder.append(userId.name);
}
if (!TextUtils.isEmpty(userId.comment)) {
userIdBuilder.append(" (");
userIdBuilder.append(userId.comment);
userIdBuilder.append(")");
}
if (!TextUtils.isEmpty(userId.email)) {
userIdBuilder.append(" <");
userIdBuilder.append(userId.email);
userIdBuilder.append(">");
}
return userIdBuilder.length() == 0 ? null : userIdBuilder.toString();
}
public static class UserId implements Serializable {
public final String name;
public final String email;
public final String comment;
public UserId(String name, String email, String comment) {
this.name = name;
this.email = email;
this.comment = comment;
}
}
}
|
