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11 package org.eclipse.pde.internal.build.jarprocessor;
12 import java.io.*;
13 import java.util.Enumeration  ;
14 import java.util.jar.JarFile ;
15 import java.util.jar.Manifest ;
16 import java.util.zip.*;
17
18
21 public class Unsigner {
22 private static final String META_INF = "META-INF"; private static final String DSA_EXT = ".DSA"; private static final String RSA_EXT = ".RSA"; private static final String SF_EXT = ".SF"; private static final String META_INF_PREFIX = META_INF + '/';
27
28 private String [] signers;
29 private File jarFile;
30 private boolean keepManifestContent = false;
31
32 private boolean isSigned(File file) {
33 ZipFile jar = null;
34 try {
35 jar = new ZipFile(file);
36
37 if (signers != null) {
38 for (int i = 0; i < signers.length; i++) {
39 if (jar.getEntry((META_INF_PREFIX + signers[i] + SF_EXT).toUpperCase()) != null)
40 return true;
41 }
42 } else {
43 Enumeration entries = jar.entries();
44 while (entries.hasMoreElements()) {
45 ZipEntry entry = (ZipEntry) entries.nextElement();
46 String entryName = entry.getName();
47 if(entryName.endsWith(SF_EXT) && entryName.startsWith(META_INF))
48 return true;
49 }
50 }
51 return false;
52 } catch (ZipException e) {
53 return false;
54 } catch (IOException e) {
55 return false;
56 } finally {
57 if (jar != null)
58 try {
59 jar.close();
60 } catch (IOException e) {
61 }
63 }
64 }
65
66 public void execute() {
67 processJar(jarFile);
68 }
69
70 private void processJar(File inputFile) {
71 if (!isSigned(inputFile))
72 return;
73
74 try {
75 ZipInputStream input = new ZipInputStream(new BufferedInputStream(new FileInputStream(inputFile)));
76 File outputFile = File.createTempFile("removing.", ".signature", inputFile.getParentFile()); ZipOutputStream output = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(outputFile)));
78
79 ZipEntry inputZe = input.getNextEntry();
80 byte[] b = new byte[8192];
81 while (inputZe != null) {
82 byte remove = shouldRemove(inputZe);
83 if (remove == 2) {
84 inputZe = input.getNextEntry();
85 continue;
86 }
87
88 if (remove == 1) {
90 output.putNextEntry(new ZipEntry(inputZe.getName()));
91 Manifest m = new Manifest ();
92 m.read(input);
93 m.getEntries().clear(); m.write(output);
95 } else {
96 output.putNextEntry(inputZe);
97 while (input.available() != 0) {
98 int read = input.read(b);
99 if (read != -1)
100 output.write(b, 0, read);
101 }
102 }
103 output.closeEntry();
104 input.closeEntry();
105
106 inputZe = input.getNextEntry();
107 }
108 output.close();
109 input.close();
110 inputFile.delete();
111 outputFile.renameTo(inputFile);
112 } catch (FileNotFoundException e) {
113 } catch (IOException e) {
115 e.printStackTrace();
116 }
117 }
118
119 private byte shouldRemove(ZipEntry entry) {
120 String entryName = entry.getName();
121 if(keepManifestContent == false && entryName.equalsIgnoreCase(JarFile.MANIFEST_NAME)) {
122 return 1;
123 }
124 if (signers != null) {
125 for (int i = 0; i < signers.length; i++) {
126 if (entryName.equalsIgnoreCase(META_INF_PREFIX + signers[i] + SF_EXT) || entryName.equalsIgnoreCase(META_INF_PREFIX + signers[i] + RSA_EXT) || entryName.equalsIgnoreCase(META_INF_PREFIX + signers[i] + DSA_EXT))
127 return 2;
128 }
129 } else {
130 if (entryName.startsWith(META_INF) && (entryName.endsWith(SF_EXT) || entryName.endsWith(RSA_EXT) || entryName.endsWith(DSA_EXT)))
131 return 2;
132 }
133 return 0;
134 }
135
136 public void setRemoveSigners(String [] fileName) {
137 signers = fileName;
138 }
139
140 public void setJar(File file) {
141 jarFile = file;
142 }
143
144 public void setKeepManifestEntries(boolean keep) {
145 keepManifestContent = keep;
146 }
147 }
148 |
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