diff --git a/jode/doc/Makefile.am b/jode/doc/Makefile.am index cc2d74b..55ea4ee 100644 --- a/jode/doc/Makefile.am +++ b/jode/doc/Makefile.am @@ -1,5 +1,12 @@ ## Input file for automake to generate the Makefile.in used by configure EXTRA_DIST = \ - jode.html jode-applet.html jode-obfuscator.html jode-unix.html \ - jode-useapplet.html jode-win.html +applet.html.in \ +download.html.in \ +frame.html \ +history.html \ +jode.html \ +license.html \ +usage.html \ +myproject.jos \ +jode-logo.gif diff --git a/jode/doc/applet.html b/jode/doc/applet.html new file mode 100644 index 0000000..ef5b7c9 --- /dev/null +++ b/jode/doc/applet.html @@ -0,0 +1,95 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + +
JODE
+Homepage +

+ +Jode + +
+

The JODE Applet

+ + + + +

http://www.informatik.uni-oldenburg.de + +Press the start button to decompile Michael's Plasma +applet. You may change the classpath and class name to point to a +class file of your choice. But note that most browsers doesn't allow +loading files from a different server.

+ +Save probably doesn't work, because it is forbidden by the browser.

+ +You may give multiple entries in the class path field separated by a +comma. The components may be local or remote zip or jar files or +directories. Note that browsers forbid accesses to different hosts or +local files that are not in a subdirectory of the applet +directory.

+ + +

Removing security restrictions with Internet Explorer

+ +

This information was submitted by Mihail Popescu + . Please note that this will + give all applets on our web server full access to your computer, + so use it at your own risk.

+ +

Go to the View/Internet Options... dialog
+Select the "Security" tab

+
    +
  • Set "Zone:" to "Trusted sites zone"
  • +
  • Click "Add Sites..." +
    • Add http://www.informatik.uni-oldenburg.de
    • +
    • Uncheck "Requires server verificaton..."
    • +
    • Click "OK"
    • +
  • +
  • Check "Custom (for expert users)"
  • +
  • Click "Settings..." +
    • Under Java/Java permissions, check "Custom"
    • +
    • Click "Java Custom Settings" +
      • Select "Edit Permissions" tab
      • +
      • Under "Unsigned Content"/"Run Unsigned Content", make sure + "Run in sandbox" is checked and then check all the "Enable" + buttons under "Additional Unsigned Permissions"
      • +
      • Click "OK"
      • +
    • +
    • Click "OK"
    • +
  • +
  • Click "OK"
  • +
+
+ +
+ +

+http://www.informatik.uni-oldenburg.de/~delwi/jode/applet.html, last +updated on 24-Okt-1999.

+ + + diff --git a/jode/doc/applet.html.in b/jode/doc/applet.html.in new file mode 100644 index 0000000..2bbca07 --- /dev/null +++ b/jode/doc/applet.html.in @@ -0,0 +1,95 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + +
JODE
+Homepage +

+ +Jode + +
+

The JODE Applet

+ + + + +

http://www.informatik.uni-oldenburg.de + +Press the start button to decompile Michael's Plasma +applet. You may change the classpath and class name to point to a +class file of your choice. But note that most browsers doesn't allow +loading files from a different server.

+ +Save probably doesn't work, because it is forbidden by the browser.

+ +You may give multiple entries in the class path field separated by a +comma. The components may be local or remote zip or jar files or +directories. Note that browsers forbid accesses to different hosts or +local files that are not in a subdirectory of the applet +directory.

+ + +

Removing security restrictions under Internet Explorer

+ +

This information was submitted by Mihail Popescu + . Please note that this will + give all applets on our web server full access to your computer, + so use it at your own risk.

+ +

Go to the View/Internet Options... dialog
+Select the "Security" tab

+
    +
  • Set "Zone:" to "Trusted sites zone"
  • +
  • Click "Add Sites..." +
    • Add http://www.informatik.uni-oldenburg.de
    • +
    • Uncheck "Requires server verificaton..."
    • +
    • Click "OK"
    • +
  • +
  • Check "Custom (for expert users)"
  • +
  • Click "Settings..." +
    • Under Java/Java permissions, check "Custom"
    • +
    • Click "Java Custom Settings" +
      • Select "Edit Permissions" tab
      • +
      • Under "Unsigned Content"/"Run Unsigned Content", make sure + "Run in sandbox" is checked and then check all the "Enable" + buttons under "Additional Unsigned Permissions"
      • +
      • Click "OK"
      • +
    • +
    • Click "OK"
    • +
  • +
  • Click "OK"
  • +
+
+ +
+ +

+http://www.informatik.uni-oldenburg.de/~delwi/jode/applet.html, last +updated on 24-Okt-1999.

+ + + diff --git a/jode/doc/download.html.in b/jode/doc/download.html.in new file mode 100644 index 0000000..f821194 --- /dev/null +++ b/jode/doc/download.html.in @@ -0,0 +1,87 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + +
JODE
+Homepage +

+ +Jode + +
+

Download

+The simplest way is to get it in precompiled form. I have two jar +archives: + + + +jode-@VERSION@.tar.gz is the source +code. You need many unix tools to compile this file. It also works +under windows with cygwin and unzip. + +

Other packages you may need

+ +
+
CYGWIN (unix tools for win95/NT)
+
+ http://sourceware.cygnus.com/cygwin/ +
+
JDK 1.1:
+
+ http://java.sun.com/products/jdk/1.1/index.htm +
+
Collection classes and Swing for JDK 1.1:
+
+ http://java.sun.com/beans/infobus/#DOWNLOAD_COLLECTIONS + http://java.sun.com/products/jfc/index.html#download-swing +
+
JDK 1.2:
+
+ http://java.sun.com/products/jdk/1.2/index.html +
+
Getopt:
+
+ http://www.urbanophile.com/arenn/hacking/download.html#getopt +
+
+
+ +
+ +

+http://www.informatik.uni-oldenburg.de/~delwi/jode/download.html, last +updated on 24-Okt-1999.

+ + + + diff --git a/jode/doc/history.html b/jode/doc/history.html new file mode 100644 index 0000000..f16f074 --- /dev/null +++ b/jode/doc/history.html @@ -0,0 +1,59 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + +
JODE
+Homepage +

+ +Jode + +
+

Why did I wrote it?

+ +

Someday I found guavad, a disassembler for java byte +code (it does similar things like javap -c). I used +it on a class file, and found that it was possible to reconstruct the +original java code. First I did it by hand on some small routines, +but I soon realized that it was a rather stupid task, and that I could +write a perl script +that does the same. At the end of the next day I had a working +decompiler.

+ +

Now while it was working, it was not easy to use. You had to +decompile the code first with a disassembler, cut the method, you +wanted to decompile and then run the perl script on it. So I decided +to get some information of the class files and do this all +automatically. I decided to write it in java now, +because it suited best.

+ +

Just for the records: the java code is now more than 50 times +bigger than the original perl script and is still growing.

+
+
+ +

+http://www.informatik.uni-oldenburg.de/~delwi/jode/history.html, last +updated on 24-Okt-1999.

+ + + diff --git a/jode/doc/jode-applet.html b/jode/doc/jode-applet.html deleted file mode 100644 index c71c73f..0000000 --- a/jode/doc/jode-applet.html +++ /dev/null @@ -1,39 +0,0 @@ - - -Jode Test Applet - - - - -Up - -

Test Applet

- - - - -

- -Press the start button to decompile this applet. You may change the -class path and class name to point to a class file of your choice. -But note that most browsers doesn't allow loading files from a -different server.

- -Save probably doesn't work, because it is forbidden by the browser.

- -You may give multiple entries in the class path field separated by a -comma. The components may be local or remote zip or jar files or -directories. Note that browsers forbid accesses to different hosts or -local files that are not in a subdirectory of the applet -directory.

- -BTW: If you just want to read the source, you may browse it -online :-)

- -You can download this, look here for -a description. - - - diff --git a/jode/doc/jode-logo.gif b/jode/doc/jode-logo.gif new file mode 100644 index 0000000..e22ca73 Binary files /dev/null and b/jode/doc/jode-logo.gif differ diff --git a/jode/doc/jode-obfuscator.html b/jode/doc/jode-obfuscator.html deleted file mode 100644 index 995c085..0000000 --- a/jode/doc/jode-obfuscator.html +++ /dev/null @@ -1,15 +0,0 @@ - - - -Using the obfuscator - - -Up - -The obfuscator currently takes a lot of options (I plan to use an -extra file containing the options). You should therefore create a -script (or batch file under Windows) that invokes the obfuscator.
- - - - \ No newline at end of file diff --git a/jode/doc/jode-unix.html b/jode/doc/jode-unix.html deleted file mode 100644 index 6371c53..0000000 --- a/jode/doc/jode-unix.html +++ /dev/null @@ -1,97 +0,0 @@ - - - -Using the decompiler under Unix - - -Up - - -

Step by Step

- -You need java version 1.1 or higher. In the following description I -assume you have the JDK 1.1, residing in /usr/lib/java. -For other installations you have to adopt the paths. Also I use the -bourne shell syntax. - -
    -
  1. Set the classpath. It should include the jode_cls.zip as well as - the directory where the class files you want to decompile resides. - You can also specify a zip file instead of a directory. It is - also a good idea to include the zip resp. jar file containing the - basic java.* class files. -
    -export CLASSPATH=$HOME/jode_cls.zip:$HOME/download:/usr/lib/java/lib/classes.zip
    -
    -
  2. -
  3. Now you can start the graphical interface as following (Note the - case of the parameter) -
        
    -java jode.JodeWindow
    -
    -
  4. -
  5. The classpath field should already contain the classpath you set - above. The class field contains jode.JodeWindow and - you may push start immediately to decompile this class. -
  6. -
  7. If you want to decompile your own .class file, enter - the name of the file without .class extension and - push the start button. Change the class path if it doesn't point - to the right directory. -
  8. -
  9. After decompiling, you can save the file using the save button. -
  10. -
- -

Packaged classes

- -If the class file belongs to a package (like jode.JodeWindow) you -have to give the full qualified class name (the package names -separated by a dot followed by the class name). The class path should -point to the directory containing the package sub directories in this -case.

- -

Command line utility

- -There is also a command line utility which is much more powerful, but -also more difficult to use. You can start it (after setting the -classpath) with -
-java jode.Decompiler
-
-and get a list of the supported parameters. To decompile the whole -decompiler you can use these magic lines: -
-mkdir src
-CLASSPATH=jode_cls.zip java jode.Decompiler --dest src \
-  `unzip -v jode_cls.zip|grep .class|cut -c59-|sed s/.class//|sed s?/?.?g`
-
- -

Obfuscator

- -So you want to protect your classes from decompiling? Well that is -your choice. You may use my obfuscator. The class files are -decompileable again (except when using -strong option, but this is -reversable by obfuscating again), but at least the information about -the names of identifiers are completely lost.

- -The obfuscator is quite difficult to use (this is why I hided this -section here) and there is only a short description of the command -line parameters: -
-CLASSPATH=jode_cls.zip java jode.Obfuscator
-
- -As a hint, to obfuscate the obfuscator use the following command line: -
-CLASSPATH=jode_cls.zip java jode.Obfuscator \
-  -cp jode_cls.zip:/usr/lib/java/lib/classes.zip -d obfuscated.zip \
-  -weak -revtable translate.tbl -swaporder \
-  -preserve jode.Obfuscator.main jode
-
- -The options -unique and -table can be -helpful to deobfuscate obfuscated code. - - - diff --git a/jode/doc/jode-useapplet.html b/jode/doc/jode-useapplet.html deleted file mode 100644 index 24bcc3a..0000000 --- a/jode/doc/jode-useapplet.html +++ /dev/null @@ -1,49 +0,0 @@ - - - -Using the decompiler as applet (locally) - - -Up - -

Step by Step

- -If you want to use the applet version you need a recent Internet -Explorer or Netscape which supports java 1.1. You can also use the -appletviewer of the java development kit. - -
    -
  1. Copy jode-applet.html into a local directory. -
  2. -
  3. Copy jode_cls.zip to the same directory. -
  4. -
  5. Copy the .class file or zip file, you - want to decompile, to that directory. -
  6. -
  7. Load the html file into Netscape or Internet Explorer. -
  8. -
  9. Set the classpath simply to `.' (without quotes). - You may also specify a zip or jar file here. Note that applet and - class files must be in the same directory due to security policy.
    - You can also change the default classpath in the html file. -
  10. -
  11. Enter the name of the class without .class - extension. -
  12. -
  13. Press start button in applet.
  14. -
  15. Press save button to save the decompiled code.
  16. -
- -

Packaged classes

- -If the class file belongs to a package (like jode.JodeWindow) you -have to give the full qualified class name (the package names -separated by a dot followed by the class name). The class path should -point to the directory containing the package sub directories in this -case. - - diff --git a/jode/doc/jode-win.html b/jode/doc/jode-win.html deleted file mode 100644 index 99d9927..0000000 --- a/jode/doc/jode-win.html +++ /dev/null @@ -1,62 +0,0 @@ - - - -Using the decompiler under Windows - - -Up - -

Step by Step

- -You need java version 1.1 or higher. I suggest using the Sun JDK or -JRE 1.1 or 1.2. In the following description I assume Sun JDK 1.2, -for other virtual machines the paths and the name of the java -interpreter (c:\jdk1.2\java) may differ.

- -
    -
  1. Set the classpath. It should include the jode_cls.zip as well as - the directory where the class files you want to decompile resides. - You can also specify a zip file instead of a directory. It is - also a good Idea to include the zip resp. jar file containing the - basic java.* class files. -
    -set CLASSPATH=c:\temp\jode_cls.zip;c:\temp;c:\jdk1.2\jre\lib\rt.jar
    -
    -
  2. -
  3. Now you can start the graphical interface as following (Note the - case of the parameter) -
        
    -c:\jdk1.2\java jode.JodeWindow
    -
    -
  4. -
  5. The classpath field should already contain the classpath you set - above. The class field contains jode.JodeWindow and - you may push start immediately to decompile this class. -
  6. -
  7. If you want to decompile your own .class file, enter - the name of the file without .class extension and - push the start button. Change the class path if it doesn't point - to the right directory. -
  8. -
  9. After decompiling, you can save the file using the save button. -
  10. -
- -

Packaged classes

- -If the class file belongs to a package (like jode.JodeWindow) you -have to give the full qualified class name (the package names -separated by a dot followed by the class name). The class path should -point to the directory containing the package sub directories in this -case.

- -

Command line utility

- -There is also a command line utility which is much more powerful, but -also more difficult to use. You can start it (after setting the -classpath) with -
-c:\jdk1.2\java jode.Decompiler
-
-and get a list of the supported parameters. - diff --git a/jode/doc/jode.html b/jode/doc/jode.html index 38175bd..180c2d2 100644 --- a/jode/doc/jode.html +++ b/jode/doc/jode.html @@ -1,70 +1,96 @@ - JOchens' java-DEcompiler (JODE) +Java Optimize and Decompile Environment (JODE) - + - -An uptodate version of this page is located here.

- -

What is it?

- -

This is a decompiler for java I have written in my spare time. It -takes class-files as input and produces something similar to the -original java-File. Of course this can't be perfect: There is no way -to produce the comments or the names of local variables (except when -compiled with -g) and there are often more ways to write -the same thing. But it does its job quite well.

- -

Quick Test

-I have now an applet interface to the decompiler. -Check it out. - -

How to get it

-

You can donwload the files in zip form. -The sources contain only the -java files, the classes -contain only the class files.

- -

I also have a tar.gz file containing only -the RCS directories. This is the form I maintain the -project, but you probably need unix and a few tools to use them.

- -

There are also some snapshots that have new -features like inner and anonymous classes.

- -

Click here to browse the files online. -

+ + + + + + + + +
JODE
+Homepage +

+ +Jode + +
+

JODE is a java package containing a decompiler and an +optimizer (aka obfuscator ;-) for java. This package was totally +written in my spare time and is available for free (see license).

+ +

The decompiler takes class files as input and produces +something similar to the original java file. Of course this +can't be perfect: There is no way to produce the comments or the names +of local variables (except when compiled with debuging) and there are +often more ways to write the same thing. But JODE does its job +quite well, so you should give it a try: start +the applet.

+ +

The optimizer transforms class files in various ways with +can be controlled by a script file. It supports the following +operations:

+
    +
  • Renaming class, method, field and local names to shorter or unique +names or according to a given translation table
  • +
  • Removing debugging information
  • +
  • Removing dead code (classes, fields, methods) and constant +fields
  • +
  • Optimizing local variable allocation
  • +
+

News

-

How to use it

+
    +
  • I can now decompile inner and anonymous classes.
  • +
  • The optimizer (aka obfuscator) can now be customized via a small +config file
  • +
  • Jode is now autoconfigured.
  • +
  • I use the getopt package
  • +
-

I have some simple step by step pages. There are three -possibilities: +

Older News

    -
  • Using the applet version. -This can make problem due to java's security policy, but is the -simplest way and works on most platforms. -
  • -
  • If you use Windows, you should look on this page.
  • -
  • Unix users should look on this page. +
  • There is a swing interface
  • +
  • Jode handles zip and jar archives as both input and output.
-

Known bugs

+

Known Bugs

+ +

If not all dependent classes can be found, the verifier (which is + run before decompilation starts) may exit with a type error. You + can decompile it with --verify=off, but take the warning + serious, that the types may be incorrect. There's sometimes no way + to guess the right type, if you don't have access the full class + hierarchie.
+ + But if you don't have the dependent classes, you can't compile the + code again, anyway, so why do you want to decompile it?

There may be situations, where the code doesn't understand complex expressions. In this many ugly temporary variables are used, but the code should still be compileable. This does especially happen when -you compile with `-O' flag and javac has inlined some methods.

+you compile with `-O' flag and javac has inlined some +methods.

Sometimes this program may exit with an Exception or produce incorrect code. Most time the code can't be compiled, so that @@ -73,53 +99,19 @@ those that occur on some of the jode.test files, I would be very interested in a bug report (including the class file, if possible).

-

Sometimes it generates some GOTO expression and -labels. This can't be compiled, but shouldn't happen any more with -javac or jikes.

- -

It doesn't handle inner and anonymous classes, yet. You can -decompile them separately, though (use `+$' switch under -jikes), but there is a bug in javac, so that a final variable is twice -initialized. If you encounter this problem just remove the doubled -line by hand.

- -

New! The latest snapshot can handle -inner and anonymous classes.

- - -

Why did I wrote it?

- -

Someday I found guavad, a disassembler for java byte -code (it does similar things like javap -c). I used -it on a class file, and found that it was possible to reconstruct the -original java code. First I did it by hand on some small routines, -but I soon realized that it was a rather stupid task, and that I could -write a perl script -that does the same. At the end of the next day I had a working -decompiler.

- -

Now while it was working, it was not easy to use. You had to -decompile the code first with a disassembler, cut the method, you -wanted to decompile and then run the perl script on it. So I decided -to get some information of the class files and do this all -automatically. I decided to write it in java now, -because it suited best.

- -

Just for the records: the java code is now more than 50 times -bigger than the original perl script and is still growing.

- -

License

- -

This code is under GNU GPL. That basically means, that you can copy -or modify this code, as long as you put all your modification under -the GPL again. Look -here for the complete license.

+

Sometimes JODE generates some GOTO expression and labels. This + shouldn't happen any more with code produced by javac or jikes. + But some flow obfuscator likes Zelix Klassmaster may provoke this. + In that case you can run the Obfuscator first (to optimize away the + flow obfuscation ;-).

+

http://www.informatik.uni-oldenburg.de/~delwi/jode/jode.html, last -updated on 17-Jun-1999.

+updated on 24-Okt-1999.

diff --git a/jode/doc/license.html b/jode/doc/license.html new file mode 100644 index 0000000..8c14502 --- /dev/null +++ b/jode/doc/license.html @@ -0,0 +1,530 @@ + + + +GNU General Public License - GNU Project - Free Software Foundation (FSF) + + + + + + + + + + + + + +
JODE
+Homepage +

+ +Jode + +
+

License

+ +

JODE is Copyright 1998,1999 by Jochen Hoenicke. It is +released under GNU GPL. That basically means, that you can copy or +modify this code, as long as you put all your modification under the +GPL again. Here is the complete license:

+ +

Table of Contents

+ + +

+ +


+ +

+ + + +

GNU GENERAL PUBLIC LICENSE

+

+Version 2, June 1991 + +

+ +
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.  
+59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+ + + +

Preamble

+ +

+ The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + +

+

+ When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + +

+

+ To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + +

+

+ For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + +

+

+ We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + +

+

+ Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + +

+

+ Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + +

+

+ The precise terms and conditions for copying, distribution and +modification follow. + +

+ + +

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

+ + +

+ +0. + This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". +

+ +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + +

+ +1. + You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. +

+ +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. +

+ +2. + You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: +

+ +

    + +
  • a) + You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + +

    +

  • b) + You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + +

    +

  • c) + If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) +
+ +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. +

+ +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. +

+ +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + +

+ +3. + You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + + + +

    + +
  • a) + Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + +

    +

  • b) + Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + +

    +

  • c) + Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) +
+ +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. +

+ +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. +

+ +4. + You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + +

+ +5. + You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + +

+ +6. + Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + +

+ +7. + If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. +

+ +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. +

+ +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. +

+ +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + +

+ +8. + If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + +

+ +9. + The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. +

+ +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + +

+ + +10. + If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + + +

NO WARRANTY

+ +

+ +11. + BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + +

+ +12. + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + +

+ + +

END OF TERMS AND CONDITIONS

+ + + +

How to Apply These Terms to Your New Programs

+ +

+ If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + +

+

+ To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + +

+ +
+one line to give the program's name and an idea of what it does.
+Copyright (C) yyyy  name of author
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+ +

+Also add information on how to contact you by electronic and paper mail. + +

+

+If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + +

+ +
+Gnomovision version 69, Copyright (C) yyyy name of author
+Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
+type `show w'.  This is free software, and you are welcome
+to redistribute it under certain conditions; type `show c' 
+for details.
+
+ +

+The hypothetical commands `show w' and `show c' should show +the appropriate parts of the General Public License. Of course, the +commands you use may be called something other than `show w' and +`show c'; they could even be mouse-clicks or menu items--whatever +suits your program. + +

+

+You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + +

+ +
+Yoyodyne, Inc., hereby disclaims all copyright
+interest in the program `Gnomovision'
+(which makes passes at compilers) written 
+by James Hacker.
+
+signature of Ty Coon, 1 April 1989
+Ty Coon, President of Vice
+
+ +

+This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. +

+
+ +

+http://www.informatik.uni-oldenburg.de/~delwi/jode/history.html, last +updated on 24-Okt-1999.

+ + + diff --git a/jode/doc/myproject.jos b/jode/doc/myproject.jos new file mode 100644 index 0000000..285f779 --- /dev/null +++ b/jode/doc/myproject.jos @@ -0,0 +1,28 @@ +# This is a sample script file to obfuscate my project + +strip = "unreach","lvt","inner" + +load = new WildCard { value = "org.myorg.myproject" }, + new WildCard { value = "org.myorg.mylib*" }, + new WildCard { value = "org.otherorg.shortlib" } + +preserve = new WildCard { value = "org.myorg.application.main.*" }, + new WildCard { value = "org.myorg.applet..()V" }, + new WildCard { value = "org.resources.bundle*..()V" }, + new MultiIdentifierMatcher { + and = new WildCard { value = "org.myorg.publiclib.*" }, + new ModifierMatcher { access = "PUBLIC" } + } + +renamer = ney KeywordRenamer { + backup = new StrongRenamer { + charsetStart = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + charsetPart = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_" + charsetPackage = "abcdefghijklmnopqrstuvwxyz" + charsetClass = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + } +} + +analyzer = new SimpleAnalyzer +post = new LocalOptimizer, new RemovePopAnalyzer diff --git a/jode/doc/usage.html b/jode/doc/usage.html new file mode 100644 index 0000000..c6a2243 --- /dev/null +++ b/jode/doc/usage.html @@ -0,0 +1,201 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + +
JODE
+Homepage +

+Jode + +
+ +

Using the Decompiler

+After you have downloaded the necessary +packages, put them into your CLASSPATH: + +
  • Under Windows you have to start a MSDOS session and type +something like: +
    +set CLASSPATH=C:\download\jode-xxx.jar;C:\swing\swingall.jar
    +
    +
  • Under Unix you start a shell and type (for bourne shell): +
    export CLASSPATH=/tmp/jode-xxx.jar:/usr/local/swing/swingall.jar
    +or for csh: +
    setenv CLASSPATH /tmp/jode-xxx.jar:/usr/local/swing/swingall.jar
    +
+ +

Command Line Interface

+ +The most powerful way to start JODE's decompiler is the command +line interface. Some people don't like long command lines; they +should go to the next section.
+ +Start the class jode.Decompiler with the options. The +following command will give a complete list of the available commands: + +
java jode.Decompiler --help
+ +

AWT Interface

+ +The AWT Interface looks exactly like the applet. In fact the applet uses the AWT +Interface. You start it after setting the CLASSPATH (see above), with +
java jode.JodeWindow
+ +In the classpath line you can enter a number of jar files, zip files +and directories separated by comma(,). Then enter the +dot(.) separated name of the class you want to decompile. +Press the start button and the decompiled class should +appear. You can save it via the save button. + +

Swing Interface

+ +For the swing interface you need java version 1.2 or the separately +available swing package (see download +page.
+ +The swing interface will show the package hierarchie of all classes +in the classpath on the left side. You can now select a class and the +decompiled code will appear on the right side. Via the menu, you may +change the classpath or switch between package hierarchie tree and +class inheritence tree.
+ +The swing interface is very nice, if you just want to work how +something works, and you don't have the source code. It is especially +useful to trace bugs through library code. It is not meant to +generate java files and so you won't find a save option +there.
+ +

Using the Obfuscator

+ +To use the obfuscator you have to create a script file, say
myproject.jos, with +the following contents (You have to adapt it to match your project, of +course). It should contain the following options: + +

First select what you want to strip. There are several +possibilities, which can be separated by comma(,):

+
+
unreach
+
strip unreachable methods and classes.
+
source
+
remove the name of the java file (exceptions will get unreadable).
+
lnt
+
remove the line number table (exceptions will get unreadable).
+
lvt
+
remove the local variable table (debugging doesn't work).
+
inner
+
strip inner class info (reflection doesn't work correctly).
+
+
+strip = "unreach","lvt","inner"
+
+ +

Select the packages and classes you want to obfuscate. You +should only include libraries, that you don't ship separately.

+
+load = new WildCard { value = "org.myorg.myproject" },
+       new WildCard { value = "org.myorg.mylib*" },
+       new WildCard { value = "org.otherorg.shortlib" }
+
+ +

Select the methods and classes you want to preserve. This is +the main method for applications and the default constructor +<init>.()V for applets, resource bundles and other classes +that you load manually at runtime.
You have to give the method +name and the type signature to identify your method. javap +-s will show you the type signatures for your classes, but you +may also use *, to select all methods with that name.

+
+preserve = new WildCard { value = "org.myorg.application.main.*" },
+           new WildCard { value = "org.myorg.applet.<init>.()V" },
+           new WildCard { value = "org.resources.bundle*.<init>.()V" }
+
+ +

If you want to obfuscate (or just shorten) the identifier you can +specify a renamer. There are currently following renamer +available

+
StrongRenamer
+
Renames to the shortest possible name. You can give a charset +that should be used. It uses the same name as much as possible.
+
UniqueRenamer
+
Renames to unique identifier of the form xxx123. Useful +to reduce name conflicts, before you decompile an obfuscated package.
+
NameSwapper
+
This renamer just swaps the names. This is a funny obfuscation +option that is not very strong, but very confusing.
+
KeywordRenamer
+
Renames identifiers to keyword. You can give your own list of +keywords as parameters. Resulting code is not decompilable directly, +but it is legal bytecode.
+
+
+renamer = new KeywordRenamer
+
+ + +

Now you can select the analyzer. The purpose of the +analyzer is to mark all reachable methods, find out which methods +needs to get the same name (overloading), and which method names +mustn't change (overload of library methods, e.g. nextElement +for Enumerations). There are currently two analyzers. +

SimpleAnalyzer
+
Straight forward analyzer. It is fast and will remove dead code +on method basis.
+
ConstantAnalyzer
+ +
Strong analyzer that will determine, which fields and instructions +have constant values. It will remove dead code on instruction basis +and replace constant instruction with a load constant, or remove them +completely.
This analyzer is especially useful to revert Zelix +Klassmaster's flow obfuscation.
+
+

+
+analyzer = new SimpleAnalyzer
+
+ +

Pre- and Post transformers transform the bytecode before +resp. after the Analyzer runs. Using this defaults should be +okay.

+
+post = new LocalOptimizer, new RemovePopAnalyzer
+
+ +
+ +
+ +

+http://www.informatik.uni-oldenburg.de/~delwi/jode/usage.html, last +updated on 24-Okt-1999.

+ + + +