1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  *             of Java bytecode.
4  *
5  * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.wtk;
22 
23 import com.sun.kvem.environment.Obfuscator;
24 import proguard.*;
25 
26 import java.io.*;
27 
28 
29 /**
30  * ProGuard plug-in for the J2ME Wireless Toolkit.
31  * <p>
32  * In order to integrate this plug-in in the toolkit, you'll have to put the
33  * following lines in the file
34  * {j2mewtk.dir}<code>/wtklib/Linux/ktools.properties</code> or
35  * {j2mewtk.dir}<code>\wtklib\Windows\ktools.properties</code> (whichever is
36  * applicable).
37  * <p>
38  * <pre>
39  * obfuscator.runner.class.name: proguard.wtk.ProGuardObfuscator
40  * obfuscator.runner.classpath: /usr/local/java/proguard1.6/lib/proguard.jar
41  * </pre>
42  * Please make sure the class path is set correctly for your system.
43  *
44  * @author Eric Lafortune
45  */
46 public class ProGuardObfuscator implements Obfuscator
47 {
48     private static final String DEFAULT_CONFIGURATION = "default.pro";
49 
50 
51     // Implementations for Obfuscator.
52 
createScriptFile(File jadFile, File projectDir)53     public void createScriptFile(File jadFile,
54                                  File projectDir)
55     {
56         // We don't really need to create a script file;
57         // we'll just fill out all options in the run method.
58     }
59 
60 
run(File obfuscatedJarFile, String wtkBinDir, String wtkLibDir, String jarFileName, String projectDirName, String classPath, String emptyAPI)61     public void run(File   obfuscatedJarFile,
62                     String wtkBinDir,
63                     String wtkLibDir,
64                     String jarFileName,
65                     String projectDirName,
66                     String classPath,
67                     String emptyAPI)
68     throws IOException
69     {
70         // Create the ProGuard configuration.
71         Configuration configuration = new Configuration();
72 
73         // Parse the default configuration file.
74         ConfigurationParser parser = new ConfigurationParser(this.getClass().getResource(DEFAULT_CONFIGURATION),
75                                                              System.getProperties());
76 
77         try
78         {
79             parser.parse(configuration);
80 
81             // Fill out the library class path.
82             configuration.libraryJars = classPath(classPath);
83 
84             // Fill out the program class path (input and output).
85             configuration.programJars = new ClassPath();
86             configuration.programJars.add(new ClassPathEntry(new File(jarFileName), false));
87             configuration.programJars.add(new ClassPathEntry(obfuscatedJarFile, true));
88 
89             // The preverify tool seems to unpack the resulting classes,
90             // so we must not use mixed-case class names on Windows.
91             configuration.useMixedCaseClassNames =
92                 !System.getProperty("os.name").regionMatches(true, 0, "windows", 0, 7);
93 
94             // Run ProGuard with these options.
95             ProGuard proGuard = new ProGuard(configuration);
96             proGuard.execute();
97 
98         }
99         catch (ParseException ex)
100         {
101             throw new IOException(ex.getMessage());
102         }
103         finally
104         {
105             parser.close();
106         }
107     }
108 
109 
110     /**
111      * Converts the given class path String into a ClassPath object.
112      */
classPath(String classPathString)113     private ClassPath classPath(String classPathString)
114     {
115         ClassPath classPath = new ClassPath();
116 
117         String separator = System.getProperty("path.separator");
118 
119         int index = 0;
120         while (index < classPathString.length())
121         {
122             // Find the next separator, or the end of the String.
123             int next_index = classPathString.indexOf(separator, index);
124             if (next_index < 0)
125             {
126                 next_index = classPathString.length();
127             }
128 
129             // Create and add the found class path entry.
130             ClassPathEntry classPathEntry =
131                 new ClassPathEntry(new File(classPathString.substring(index, next_index)),
132                                    false);
133 
134             classPath.add(classPathEntry);
135 
136             // Continue after the separator.
137             index = next_index + 1;
138         }
139 
140         return classPath;
141     }
142 }
143