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
222
223
224
225
226
|
/*
* Copyright (C) 2012 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.motorolamobility.studio.android.certmanager.packaging.sign;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.Attributes;
import java.util.jar.Manifest;
import org.bouncycastle.util.encoders.Base64Encoder;
import com.motorola.studio.android.common.log.StudioLogger;
import com.motorolamobility.studio.android.certmanager.CertificateManagerActivator;
import com.motorolamobility.studio.android.certmanager.packaging.PackageFile;
/**
* This class implements the package signature file, that follows the jar
* signing process.
*/
public class SignatureFile
{
/**
* The package file
*/
private final PackageFile packageFile;
/**
* The base encoder
*/
private Base64Encoder encoder = new Base64Encoder();
/**
* Manifest Created-By attribute
*/
private final String createdBy;
/**
* Default Constructor
*
* @param packageFile
* the signed package file to be signed
* @param alias
* the certificate alias
* @param encoder
* the BASE64 encoder
* @param createdBy
* Created-By manifest attribute
*/
public SignatureFile(PackageFile packageFile, String alias, Base64Encoder encoder,
String createdBy)
{
this.packageFile = packageFile;
this.encoder = encoder;
this.createdBy = createdBy;
}
/**
* Return the filename with relative path from root (normally
* META-INF/alias.SF).
*/
@Override
public String toString()
{
return CertificateManagerActivator.METAFILES_DIR
+ CertificateManagerActivator.JAR_SEPARATOR + ISignConstants.SIGNATURE_FILE_NAME
+ ISignConstants.SIGNATURE_FILE_NAME_EXTENSION;
}
/**
* Writes this file to an output stream.
*
* @param outputStream
* the stream to write this file
* @throws IOException
* if an I/O error occurs during the signing process
* @throws SignException
* if a processing error occurs during the signing process
*/
public void write(OutputStream outputStream) throws IOException, SignException
{
// the manifest file
Manifest manifestFile = this.packageFile.getManifest();
// the manifest digester
ManifestDigester manifestDigester = new ManifestDigester(manifestFile);
// the signature file to be constructed
Manifest signatureFile = new Manifest();
// the manifest digested main attributes
byte[] digestedMainAttributes = manifestDigester.getDigestedManifestMainAttributes();
// the digest of entire manifest
byte[] digestedManifest = manifestDigester.getDigestedManifest();
// put the required main attributes to a valid signature file
// (Version, CreatedBy, Main Attrib digest, Manifest digest)
Attributes signatureFileMainAtt = signatureFile.getMainAttributes();
signatureFileMainAtt.putValue(ISignConstants.SIGNATURE_VERSION_KEY,
ISignConstants.SIGNATURE_VERSION_VALUE);
signatureFileMainAtt.putValue(CertificateManagerActivator.CREATED_BY_FIELD, this.createdBy);
ByteArrayOutputStream stream = null;
try
{
stream = new ByteArrayOutputStream();
encoder.encode(digestedMainAttributes, 0, digestedMainAttributes.length, stream);
String encodedMainAttributesDigest = stream.toString();
stream.reset();
encoder.encode(digestedManifest, 0, digestedManifest.length, stream);
String encodedManifestDigest = stream.toString();
signatureFileMainAtt.putValue(ISignConstants.SHA1_DIGEST_MANIFEST_MAIN,
encodedMainAttributesDigest);
signatureFileMainAtt.putValue(ISignConstants.SHA1_DIGEST_MANIFEST,
encodedManifestDigest);
}
finally
{
if (stream != null)
{
try
{
stream.close();
}
catch (IOException e)
{
StudioLogger.error("Could not close stream writing signature file. "
+ e.getMessage());
}
}
}
// calculate the digest from each entry of manifest
ByteArrayOutputStream baos = null;
try
{
baos = new ByteArrayOutputStream();
manifestFile.write(baos);
Map<String, Attributes> manifestEntries = manifestFile.getEntries();
Map<String, Attributes> signatureFileEntries = signatureFile.getEntries();
HashMap<String, ManifestEntry> entries = manifestDigester.getEntries();
for (String manifestEntryKey : manifestEntries.keySet())
{
ManifestEntry signatureFileEntry = entries.get(manifestEntryKey);
byte[] digestedArray = signatureFileEntry.digest();
ByteArrayOutputStream encodedStream = null;
try
{
encodedStream = new ByteArrayOutputStream();
this.encoder.encode(digestedArray, 0, digestedArray.length, encodedStream);
String digestedValue = encodedStream.toString();
Attributes signatureFileAtt = new Attributes();
signatureFileAtt.putValue(ISignConstants.SHA1_DIGEST, digestedValue);
signatureFileEntries.put(manifestEntryKey, signatureFileAtt);
}
finally
{
try
{
if (encodedStream != null)
{
encodedStream.close();
}
}
catch (IOException e)
{
StudioLogger.error("Could not close stream: " + e.getMessage());
}
}
}
}
catch (IOException e)
{
StudioLogger.error(SignatureFile.class,
"I/O error digesting manifest entries: " + e.getMessage());
throw new SignException("I/O error digesting manifest entries", e);
}
finally
{
try
{
if (baos != null)
{
baos.close();
}
}
catch (IOException e)
{
StudioLogger.error("Could not close stream: " + e.getMessage());
}
}
// I/O exceptions below are thrown unmodified
signatureFile.write(outputStream);
StudioLogger.info(SignatureFile.class, "Signature file was written");
}
}
|
