blob: f098c4bb04e17cde5604032029571da397e7e16d (
plain) (
blame)
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
|
/*******************************************************************************
* Copyright (c) 2007 compeople AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* compeople AG (Stefan Liebig) - initial API and implementation
* IBM - continuing development
*******************************************************************************/
package org.eclipse.equinox.internal.p2.artifact.processors.verifier;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.equinox.internal.p2.artifact.processors.Activator;
import org.eclipse.equinox.p2.artifact.repository.IArtifactDescriptor;
import org.eclipse.equinox.p2.artifact.repository.processing.ProcessingStep;
import org.eclipse.equinox.p2.artifact.repository.processing.ProcessingStepDescriptor;
public class MD5Verifier extends ProcessingStep {
protected String md5Test;
private MessageDigest md5;
public MD5Verifier() {
super();
}
public MD5Verifier(String md5Test) {
super();
this.md5Test = md5Test;
basicInitialize(null);
}
public void initialize(ProcessingStepDescriptor descriptor, IArtifactDescriptor context) {
super.initialize(descriptor, context);
String data = descriptor.getData();
if (data.equals("download"))
md5Test = context.getProperty(IArtifactDescriptor.DOWNLOAD_MD5);
else if (data.equals("artifact"))
md5Test = context.getProperty(IArtifactDescriptor.ARTIFACT_MD5);
else
md5Test = data;
basicInitialize(descriptor);
}
private void basicInitialize(ProcessingStepDescriptor descriptor) {
int code;
if (descriptor == null)
code = IStatus.ERROR;
else
code = descriptor.isRequired() ? IStatus.ERROR : IStatus.INFO;
if (md5Test == null || md5Test.length() != 32)
status = new Status(code, Activator.ID, "MD5 value not available or incorrect size");
try {
md5 = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
status = new Status(code, Activator.ID, "Could not create MD5 algorithm", e);
}
}
public void write(int b) throws IOException {
if (b != -1)
md5.update((byte) b);
destination.write(b);
}
public void close() throws IOException {
super.close();
byte[] digest = md5.digest();
StringBuffer buf = new StringBuffer();
for (int i = 0; i < digest.length; i++) {
if ((digest[i] & 0xFF) < 0x10)
buf.append('0');
buf.append(Integer.toHexString(digest[i] & 0xFF));
}
// if the hashes don't line up set the status to error.
if (!buf.toString().equals(md5Test)) {
String message = "Error processing stream. MD5 hash is not as expected.";
status = new Status(IStatus.ERROR, "plugin id", message);
} else
status = Status.OK_STATUS;
}
}
|
