From edc69e287ae8c3158835824486f3b73e47cfee5b Mon Sep 17 00:00:00 2001 From: hoenicke Date: Fri, 30 Jun 2000 11:38:40 +0000 Subject: [PATCH] Updated web pages. git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@1239 379699f6-c40d-0410-875b-85095c16579e --- jode/doc/applet.html | 146 +++++----- jode/doc/applet.php | 36 +++ jode/doc/bluesky.html | 90 +++--- jode/doc/bluesky.php | 72 +++++ jode/doc/download.html | 92 ++++++ jode/doc/download.html.in | 94 ------- jode/doc/download.php | 40 +++ jode/doc/footer.inc | 14 + jode/doc/header.inc | 42 +++ jode/doc/history.html | 97 ++++--- jode/doc/history.php | 23 ++ jode/doc/index.html | 131 +++++++++ jode/doc/index.php | 69 +++++ jode/doc/jode.html | 137 --------- jode/doc/license.html | 574 ++++---------------------------------- jode/doc/license.php | 15 + jode/doc/links.html | 117 ++++++-- jode/doc/links.php | 62 ++++ jode/doc/menu.inc | 115 ++++++++ jode/doc/usage.html | 111 ++++---- jode/doc/usage.php | 230 +++++++++++++++ 21 files changed, 1337 insertions(+), 970 deletions(-) create mode 100644 jode/doc/applet.php create mode 100644 jode/doc/bluesky.php create mode 100644 jode/doc/download.html delete mode 100644 jode/doc/download.html.in create mode 100644 jode/doc/download.php create mode 100644 jode/doc/footer.inc create mode 100644 jode/doc/header.inc create mode 100644 jode/doc/history.php create mode 100644 jode/doc/index.html create mode 100644 jode/doc/index.php delete mode 100644 jode/doc/jode.html create mode 100644 jode/doc/license.php create mode 100644 jode/doc/links.php create mode 100644 jode/doc/menu.inc create mode 100644 jode/doc/usage.php diff --git a/jode/doc/applet.html b/jode/doc/applet.html index 1b8a2cd..c8b5034 100644 --- a/jode/doc/applet.html +++ b/jode/doc/applet.html @@ -2,98 +2,96 @@ Java Optimize and Decompile Environment (JODE) - - + + + + - + - - + - +Save probably doesn't work, because it is forbidden by your browser.

+
+ JODE
-Homepage -

- -Jode - + + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
 +

The JODE Applet

+Please be patience, loading the applet may take some time.

+ +
- + +

Sorry you need a java enabled browser to test a java applet ;-)

Don't read the rest, it only contains information about the applet.

-

+ +

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 don't allow -loading files from a different server.

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

+href="http://www.informatik.uni-oldenburg.de/~mw/plasma.html">Michael's +Plasma applet (and give the decompiler some time to download the +jar file).

-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 deny accesses to different hosts or -local files that are not in a subdirectory of the applet -directory.

+You may change the classpath to point to a zip or jar file of your +choice, using a similar syntax. Use %3a instead of a +colon `:' in the url. You can also point it to a directory containing +the class-files (include a slash `/' at the end in this case), but +this is not recommended, since it is very slow. You may give +multiple entries in the class path field separated by a comma.

+You can't use this applet for local files; the class files must be on +a server that is accessible from sourceforge. You can try to give +local filenames directly without the load.html wrapper, but that is +probably forbidden by your browser. Most browser only allow loading +files from the same server as the applet, and this is the reason why +you have to use such a cryptic URL.

-

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"
    • -
-
+ + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
-
- -

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

- - - + + diff --git a/jode/doc/applet.php b/jode/doc/applet.php new file mode 100644 index 0000000..a523e35 --- /dev/null +++ b/jode/doc/applet.php @@ -0,0 +1,36 @@ + +

The JODE Applet

+ +Please be patience, loading the applet may take some time.

+ +
+ + + + +

Sorry you need a java enabled browser to test a java applet ;-)

+

Don't read the rest, it only contains information about the applet.

+ +

+ +Press the start button to decompile Michael's +Plasma applet (and give the decompiler some time to download the +jar file).

+ +You may change the classpath to point to a zip or jar file of your +choice, using a similar syntax. Use %3a instead of a +colon `:' in the url. You can also point it to a directory containing +the class-files (include a slash `/' at the end in this case), but +this is not recommended, since it is very slow. You may give +multiple entries in the class path field separated by a comma.

+ +You can't use this applet for local files; the class files must be on +a server that is accessible from sourceforge. You can try to give +local filenames directly without the load.php wrapper, but that is +probably forbidden by your browser. Most browser only allow loading +files from the same server as the applet, and this is the reason why +you have to use such a cryptic URL.

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

+ diff --git a/jode/doc/bluesky.html b/jode/doc/bluesky.html index dfcf9c4..81c3537 100644 --- a/jode/doc/bluesky.html +++ b/jode/doc/bluesky.html @@ -2,35 +2,51 @@ Java Optimize and Decompile Environment (JODE) - + + - - - + - + - - - + + - -
JODE
+ JODE
-Homepage -

-Jode - + + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
 +

Blue Sky

This section contains features that I think would be great to have, @@ -60,7 +76,7 @@ names the variable after the type with a unifying number appended. A method containing very much objects of the same type looks very ugly.

-

My plans here are to look at the assignments. If we have locals in +

My plan is looking at the assignments. If we have locals in assignments 

 int l_1 = array.length
@@ -81,7 +97,7 @@ weighted hints and constructing the name in an intelligent way. 

 
 
Better deobfuscation features

 
First there should be a good Renamer: Methods that simply
-return a fields value should be renamed to getFieldName.
+return a field value should be renamed to getFieldName.
 Fields should be named after their type, maybe also by assignments
 (see section about local variable names).

 
@@ -97,15 +113,21 @@ it should change the parameter according to the rename function. 

 
It would be nice if the decompiler could merge the javadoc comments
 into the class file.  More and more people use javadoc to comment the
 public api of their java classes.  It shouldn't be too difficult to
-take them and back into the java code. 

-
- -
+copy them back into the java code.

-

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

- - - +

This doesn't need to be built into the decompiler. A script that takes +the javadoc pages and the decompiled code can easily merge them.

+ + + + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
+ + + diff --git a/jode/doc/bluesky.php b/jode/doc/bluesky.php new file mode 100644 index 0000000..968e891 --- /dev/null +++ b/jode/doc/bluesky.php @@ -0,0 +1,72 @@ + +

Blue Sky

+ +

This section contains features that I think would be great to have, +but are also very hard to implement. The name of the section is +inspired, by Mozilla.

+ +

Currently this are all my own ideas. But if you send me an idea +for an interesting feature, I will add it to this list.

+ +

Outline inlined methods

+ +

If java gets called with `-O' switch, it inlines methods, +that are private, final, or static and contain no loops. When +decompiling this it sometimes produces really ugly code. The right +way to solve this would be to outline the code again. This is +possible but requires to find the inlined method.

+ +

The name `outline' was suggested by Michael. +

+ +

Better names of local variables

+ +

The local variable naming is very stupid. Even with pretty it just +names the variable after the type with a unifying number appended. A +method containing very much objects of the same type looks very +ugly.

+ +

My plan is looking at the assignments. If we have locals in +assignments +

+int l_1 = array.length
+String l_2 = object.getName()
+
+we could name them "length" and "name". If we +have assignments: +
+MenuItem local_1 = new MenuItem("Open");
+MenuItem local_2 = new MenuItem("Save");
+
+good names would be miOpen and miSave.

+ +

It is currently possible to assign a (hint name,type) pair +to a local. If the type matches, the local will be named after +hint name. This could be extended by giving them several +weighted hints and constructing the name in an intelligent way.

+ +

Better deobfuscation features

+

First there should be a good Renamer: Methods that simply +return a field value should be renamed to getFieldName. +Fields should be named after their type, maybe also by assignments +(see section about local variable names).

+ +

The deobfuscator should detect inner and anonymous variables, +synthetic methods and so on, and rename them accordingly.

+ +

Handling of Class.forName in obfuscator

+

The obfuscator should detect Class.forName constructs (and +similarly for methods and fields) and if their parameters are constant +it should change the parameter according to the rename function.

+ +

Merging javadoc comments

+

It would be nice if the decompiler could merge the javadoc comments +into the class file. More and more people use javadoc to comment the +public api of their java classes. It shouldn't be too difficult to +copy them back into the java code.

+ +

This doesn't need to be built into the decompiler. A script that takes +the javadoc pages and the decompiled code can easily merge them.

+ diff --git a/jode/doc/download.html b/jode/doc/download.html new file mode 100644 index 0000000..674563f --- /dev/null +++ b/jode/doc/download.html @@ -0,0 +1,92 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + + +
+ JODE
+ + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
+		 +

Download

+ +The latest source code of JODE is available at the project page. +You need several other packages to build JODE, check the links page.

+ +The simplest way to get it, especially for non unix users, is in +precompiled form, though. I have two jar archives at the ftp server. You may +need to press shift while clicking on the link, depending on your +browser. + + +
  • jode-1.0.93-1.1.jar is for JDK 1.1. It already +contains Getopt and the collection classes from the GNU Classpath +project. If you want to use the swing interface, you have to download +swing separately.
    • + +
  • jode-1.0.93-1.2.jar is for JDK 1.2. It already +contains Getopt, so you don't need any other package.
+ +

CVS Repository

+ +You can get the latest sources from the CVS repository. +Follow the instruction on that page; use jode as +modulename. Then change to the directory jode and run + +
aclocal && automake -a && autoconf
+ +Afterwards follow the instruction in the INSTALL file. +
+ + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
+ + + diff --git a/jode/doc/download.html.in b/jode/doc/download.html.in deleted file mode 100644 index 43c9eaf..0000000 --- a/jode/doc/download.html.in +++ /dev/null @@ -1,94 +0,0 @@ - - - -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@-1.1.jar is for -JDK 1.1. It already contains Getopt and the collection classes -from the GNU Classpath project. If you want to use the swing -interface, you have to download swing separately.
    • - -
  • jode-@VERSION@-1.2.jar is for -JDK 1.2. It already contains Getopt, so you don't need any other -package.
    • -
- -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 -
-
Swing for JDK 1.1:
-
- 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 -
-
Collection Classes:
-
I have written a small script that puts the collection classes -from the GNU Classpath Project into -its own package (org.gnu.java.util.collections). You can -download the source code (including -the script), or a precompiled jar file. -
-
-
- -
- -

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

- - - - diff --git a/jode/doc/download.php b/jode/doc/download.php new file mode 100644 index 0000000..d8c5001 --- /dev/null +++ b/jode/doc/download.php @@ -0,0 +1,40 @@ + +

Download

+ +The latest source code of JODE is available at the project page. +You need several other packages to build JODE, check the links page.

+ +The simplest way to get it, especially for non unix users, is in +precompiled form, though. I have two jar archives at the ftp server. You may +need to press shift while clicking on the link, depending on your +browser. + +jode-".$version.$what.".jar"; +} ?> + + + +

CVS Repository

+ +You can get the latest sources from the +CVS repository. +Follow the instruction on that page; use jode as +modulename. Then change to the directory jode and run + +
aclocal && automake -a && autoconf
+ +Afterwards follow the instruction in the INSTALL file. + diff --git a/jode/doc/footer.inc b/jode/doc/footer.inc new file mode 100644 index 0000000..01862e5 --- /dev/null +++ b/jode/doc/footer.inc @@ -0,0 +1,14 @@ + + + + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 30-Jun-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
+ + + diff --git a/jode/doc/header.inc b/jode/doc/header.inc new file mode 100644 index 0000000..eb6bc8e --- /dev/null +++ b/jode/doc/header.inc @@ -0,0 +1,42 @@ +"; +} + +function sflink($link) { + echo ""; +} +?> + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + +
+Under Construction,
+beware broken links */ ?> +		 JODE
+ + diff --git a/jode/doc/history.html b/jode/doc/history.html index 89bafcc..d093ec8 100644 --- a/jode/doc/history.html +++ b/jode/doc/history.html @@ -2,60 +2,83 @@ Java Optimize and Decompile Environment (JODE) - - + + + + - + - - + - +
+ JODE
-Homepage -

- -Jode - + + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
 -

Why did I wrote it?

+		 +

History

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.

+but I soon realized that it was a rather stupid task. So I wrote a +small perl script that +did this process automatically. At the end of the next day I had my +first 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.

+

Now while the perl script is working, it is not easy +to use. You have to decompile the code first with a disassembler, cut +out the code of a single method, and run the perl script on it. I +decided to get the bytecode directly out 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.

-
-
+ + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
-

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

+ + - - diff --git a/jode/doc/history.php b/jode/doc/history.php new file mode 100644 index 0000000..de602ca --- /dev/null +++ b/jode/doc/history.php @@ -0,0 +1,23 @@ + +

History

+ +

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. So I wrote a +small perl script that +did this process automatically. At the end of the next day I had my +first working decompiler.

+ +

Now while the perl script is working, it is not easy +to use. You have to decompile the code first with a disassembler, cut +out the code of a single method, and run the perl script on it. I +decided to get the bytecode directly out 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.

+ + diff --git a/jode/doc/index.html b/jode/doc/index.html new file mode 100644 index 0000000..51dff88 --- /dev/null +++ b/jode/doc/index.html @@ -0,0 +1,131 @@ + + + +Java Optimize and Decompile Environment (JODE) + + + + + + + + + + + + + + +
+ JODE
+ + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
+		 + + +

JODE is a java package containing a decompiler and an +optimizer for java. This package is freely available under the GPL +(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, +obfuscated, 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

+ +
    +
  • JODE is now hosted by SourceForge.
    • +
  • The latest CVS version breaks long lines
    • +
  • I can now decompile inner and anonymous classes.
    • +
  • The optimizer (aka obfuscator) can be customized via a small +config file
    • +
  • Jode is autoconfigured.
    • +
+ +

Limitations

+ +

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 types may be incorrect. There's sometimes no way to + guess the right type, if you don't have access the full class + hierarchie.
+ + This is not a bug in the verifier: java will complain the same way, + if it is run with bytecode verification turned on. And if you don't + have the dependent classes, you can't compile the code again.

+ +

There may be situations, where the code doesn't understand complex +expressions. In this case 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.

+ +

Sometimes this program may exit with an Exception or +produce incorrect code. Most time the code can't be compiled, so that +it can be easily spotted. If you have one of these problems (except +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 JODE generates some GOTO expression and labels. +This shouldn't happen any more with code produced by javac or jikes. +But some flow obfuscator may provoke this. In that case you can run +the Obfuscator first (to optimize away the flow obfuscation ;-).

+
+ + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
+ + + diff --git a/jode/doc/index.php b/jode/doc/index.php new file mode 100644 index 0000000..98addb1 --- /dev/null +++ b/jode/doc/index.php @@ -0,0 +1,69 @@ + + +

JODE is a java package containing a decompiler and an +optimizer for java. This package is freely available under the GPL +(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, +obfuscated, 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

+ +
    +
  • JODE is now hosted by SourceForge.
    • +
  • The latest CVS version breaks long lines
    • +
  • I can now decompile inner and anonymous classes.
    • +
  • The optimizer (aka obfuscator) can be customized via a small +config file
    • +
  • Jode is autoconfigured.
    • +
+ +

Limitations

+ +

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 types may be incorrect. There's sometimes no way to + guess the right type, if you don't have access the full class + hierarchie.
+ + This is not a bug in the verifier: java will complain the same way, + if it is run with bytecode verification turned on. And if you don't + have the dependent classes, you can't compile the code again.

+ +

There may be situations, where the code doesn't understand complex +expressions. In this case 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.

+ +

Sometimes this program may exit with an Exception or +produce incorrect code. Most time the code can't be compiled, so that +it can be easily spotted. If you have one of these problems (except +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 JODE generates some GOTO expression and labels. +This shouldn't happen any more with code produced by javac or jikes. +But some flow obfuscator may provoke this. In that case you can run +the Obfuscator first (to optimize away the flow obfuscation ;-).

+ diff --git a/jode/doc/jode.html b/jode/doc/jode.html deleted file mode 100644 index 7f24581..0000000 --- a/jode/doc/jode.html +++ /dev/null @@ -1,137 +0,0 @@ - - - -Java Optimize and Decompile Environment (JODE) - - - - - - - - - - - - - - - - - -
JODE
-Homepage -

- -Jode (WWW) - -		 -

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

- -
    -
  • 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
    • -
- -

Older News

-
    -
  • There is a swing interface
    • -
  • Jode handles zip and jar archives as both input and output.
    • -
- -

Known Bugs

- -

Small bugs, that should be fixed in the next release:

-
    -
  • If there is more than one assignment to a final local variable -(they can be conditionally, so that only one is actually excuted), -jode refuses to mark it as final. This can make decompilation of -method scoped classes wrong.
    • - -
  • There's probably a bug in LocalOptimizer (part of the obfuscator). -It is triggered very seldom, and may produces incorrect code. If your -application doesn't work after obfuscation, or is refused by the -bytecode verifier, try again without the LocalOptimizer. If this was -the reason send me your class file ;-) -
    • -
- -

Now follows a list of oddities, that will probably never get -completely fixed.

- -

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.
- - This is not a bug in the verifier: java will complain the same way, - if it is run with bytecode verification turned on. And if you don't - have the dependent classes, you can't compile the code again.

- -

There may be situations, where the code doesn't understand complex -expressions. In this case 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.

- -

Sometimes this program may exit with an Exception or -produce incorrect code. Most time the code can't be compiled, so that -it can be easily spotted. If you have one of these problems (except -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 JODE generates some GOTO expression and labels. -This shouldn't happen any more with code produced by javac or jikes. -But some flow obfuscator 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 24-Jan-2000.

- - - diff --git a/jode/doc/license.html b/jode/doc/license.html index f6db54f..c4a5636 100644 --- a/jode/doc/license.html +++ b/jode/doc/license.html @@ -1,532 +1,76 @@ -GNU General Public License - GNU Project - Free Software Foundation (FSF) - - +Java Optimize and Decompile Environment (JODE) + + + + - + - - + - +
+ JODE
-Homepage -

- -Jode - + + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
 -

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
+
 +

JODE is Copyright © 1998-2000 by Jochen Hoenicke.

-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 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 +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.

- - - + + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
+ + + diff --git a/jode/doc/license.php b/jode/doc/license.php new file mode 100644 index 0000000..76ae787 --- /dev/null +++ b/jode/doc/license.php @@ -0,0 +1,15 @@ + +

JODE is Copyright © 1998-2000 by Jochen Hoenicke.

+ +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. + + diff --git a/jode/doc/links.html b/jode/doc/links.html index 622e907..9b4e626 100644 --- a/jode/doc/links.html +++ b/jode/doc/links.html @@ -2,35 +2,55 @@ Java Optimize and Decompile Environment (JODE) - - + + + + - + - - + - +

Miscellanous packages needed to run JODE

+
+
CYGWIN (unix tools for win95/NT)
+
+ http://sourceware.cygnus.com/cygwin/ +
+
JDK 1.1:
+
+ http://java.sun.com/products/jdk/1.1/ +
+
Swing for JDK 1.1:
+
+ http://java.sun.com/products/jfc/index.html#download-swing +
+
JDK 1.2:
+
+ http://java.sun.com/products/jdk/1.2/ +
+
Getopt:
+
+ http://www.urbanophile.com/arenn/hacking/download.html#getopt +
+
Collection Classes:
+
I have written a small script that puts the collection classes +from the GNU Classpath Project into +its own package (org.gnu.java.util.collections). You can +download the source code (including +the script), or a precompiled jar file. +
+
+
+ JODE
-Homepage -

-Jode - + + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
 +

JODE Links

Other decompilers

+ + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
-

- -

-http://www.informatik.uni-oldenburg.de/~delwi/jode/usage.html, last -updated on 24-Jan-2000.

- - - + + diff --git a/jode/doc/links.php b/jode/doc/links.php new file mode 100644 index 0000000..14ee011 --- /dev/null +++ b/jode/doc/links.php @@ -0,0 +1,62 @@ + +

JODE Links

+

Other decompilers

+ +

Other obfuscators

+
    +
  • The Open Directory list
    • +
  • Hashjava is another free obfuscator. It is no longer maintained, though, since its successor was commercialized.
    • +
  • Zelix +Klassmaster does a very good flow optimization and also decrypts +strings. But JODE's deobfuscator can undo both.
    • +
  • Christian S. Collberg has some really interesting papers about non reversible obfuscations.
    • +
+

Graphical User Interface

+ +

Miscellanous packages needed to run JODE

+
+
CYGWIN (unix tools for win95/NT)
+
+ http://sourceware.cygnus.com/cygwin/ +
+
JDK 1.1:
+
+ http://java.sun.com/products/jdk/1.1/ +
+
Swing for JDK 1.1:
+
+ http://java.sun.com/products/jfc/index.html#download-swing +
+
JDK 1.2:
+
+ http://java.sun.com/products/jdk/1.2/ +
+
Getopt:
+
+ http://www.urbanophile.com/arenn/hacking/download.html#getopt +
+
Collection Classes:
+
I have written a small script that puts the collection classes +from the GNU Classpath Project into +its own package (org.gnu.java.util.collections). You can +download the source code (including +the script), or a precompiled jar file. +
+
+ + diff --git a/jode/doc/menu.inc b/jode/doc/menu.inc new file mode 100644 index 0000000..fff205f --- /dev/null +++ b/jode/doc/menu.inc @@ -0,0 +1,115 @@ +Home" , "selflink", "jode", + "Project page" , "sflink", "project/", + "-", "-", "-", + "Applet" , "selflink", "applet", + "Download" , "selflink", "download", + "Documentation", "selflink", "usage", + "License" , "selflink", "license", + "History" , "selflink", "history", + "Links" , "selflink", "links", + "Blue Sky" , "selflink", "bluesky"), + "Feedback", + array("Bug Tracking" , "sflink", "bugs/", + "Public Forums" , "sflink", "forum/", + "Mailing List" , "link", + "http://lists.sourceforge.net/mailman/listinfo/jode-users", + "Private Mail" , "link", + "http://sourceforge.net/sendmessage.php?touser=18252"), + "Download", + array("FTP server", "link", "ftp://jode.sourceforge.net/pub/jode/", + "Source releases", "sflink", "project/filelist.php")); + +$images = array( + "Powered by ", "http://sourceforge.net/sflogo.php?group_id=3790&type=1", + "SourceForge", "http://sourceforge.net", + "Best viewed with ", "a-logo.gif", + "Any Browser", "http://www.anybrowser.org/campaign/"); + +if (eregi("^Lynx", $HTTP_USER_AGENT)) { + + reset($menu); + while (list($dummy, $header) = each($menu)) { + list($dummy, $subitems) = each($menu); + + echo "$header:\n"; + reset($subitems); + while (list($dummy, $name) = each($subitems)) { + list($dummy, $type) = each($subitems); + list($dummy, $link) = each($subitems); + if ($type == "selflink") { + selflink($link); + } else if ($type == "sflink") { + sflink($link); + } else if ($type == "-") { + echo "
\n"; + continue; + } else if ($type == "link") { + echo ""; + } + $name = ereg_replace(" ", " ", $name); + echo "$name"; + if (current($subitems)) { + echo " |\n"; + } + } + echo "
\n\n"; + } + echo "\n"; + reset($images); + while (list($dummy, $label) = each($images)) { + list($dummy, $src) = each($images); + list($dummy, $alt) = each($images); + list($dummy, $link) = each($images); + echo "$label\"$alt\"\n"; + } + echo "\n"; +} else { + echo "\n"; + + reset($menu); + while (list($dummy, $header) = each($menu)) { + list($dummy, $subitems) = each($menu); + echo "\n\n"; + echo "\n"; + echo "
"; + echo "$header
\n"; + reset($subitems); + while (list($dummy, $name) = each($subitems)) { + list($dummy, $type) = each($subitems); + list($dummy, $link) = each($subitems); + if ($type == "selflink") { + selflink($link); + } else if ($type == "sflink") { + sflink($link); + } else if ($type == "-") { + echo "
\n"; + continue; + } else if ($type == "link") { + echo ""; + } + $name = ereg_replace(" ", " ", $name); + echo "$name"; + if (current($subitems)) { + echo "
\n"; + } + } + } + echo "
"; + + reset($images); + while (list($dummy, $label) = each($images)) { + list($dummy, $src) = each($images); + list($dummy, $alt) = each($images); + list($dummy, $link) = each($images); + echo "
$label
\n"; + echo "\"$alt\"
\n"; + } + echo "
\n"; +} +?> diff --git a/jode/doc/usage.html b/jode/doc/usage.html index d556c68..e04302e 100644 --- a/jode/doc/usage.html +++ b/jode/doc/usage.html @@ -2,42 +2,54 @@ Java Optimize and Decompile Environment (JODE) - - + + + + - + - - + - +
+ JODE
-Homepage -

-Jode - + + + + + + + + +
Jode
+Home
+Project page
+
+Applet
+Download
+Documentation
+License
+History
+Links
+Blue Sky
Feedback
+Bug Tracking
+Public Forums
+Mailing List
+Private Mail
Download
+FTP server
+Source releases

Powered by
+SourceForge
+
Best viewed with
+Any Browser
+
 +

Using the Decompiler

 -After you have downloaded the necessary +After you have downloaded the necessary packages, put them into your CLASSPATH:
  • Under Windows you have to start a MSDOS session and type @@ -71,10 +83,9 @@ following command will give a complete list of the available commands:

    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 +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.decompiler.Window
    In the classpath line you can enter a number of jar files, zip files @@ -86,7 +97,7 @@ 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 +available swing package (see link page. You can invoke it like this: 
     java jode.swingui.Main --classpath classes.jar
@@ -106,13 +117,15 @@ you won't find a save option there.
    
 
    Java Interface
    
 
 If you want to integrate JODE into your own java program, you
-can use the jode.decompiler.Decompile class.  Note that
-the GPL only allows you to integrate JODE into GPL programs.
-Please contact me if, so I can put you on my link
-page and keep you informed about new releases.
    
+can use the jode.decompiler.Decompiler
+class.  Note that the GPL only allows you to integrate JODE
+into GPL programs.  Please contact me if you use JODE in this
+way.
    
 
-You may use this stripped down jar
-archive containing all necessery classes.
+You may use this stripped
+down jar archive containing all necessary classes.
 
 
    Using the Obfuscator
    
 
@@ -252,15 +265,17 @@ change the bytecode interface.
    
 
     post = new LocalOptimizer, new RemovePopAnalyzer
 
    
-
-
- -
- -

-http://www.informatik.uni-oldenburg.de/~delwi/jode/usage.html, last -updated on 30-Jan-2000.

- - - + + + + +
+ All trademarks and copyrights on this page are properties of their respective owners.
+ Last updated on 8-May-2000, + Copyright © 1998-2000 by Jochen Hoenicke. +
+ + + diff --git a/jode/doc/usage.php b/jode/doc/usage.php new file mode 100644 index 0000000..5ea9192 --- /dev/null +++ b/jode/doc/usage.php @@ -0,0 +1,230 @@ + +Decompiler
+   Command Line
+   AWT Interface
+   Swing Interface
+   Java Interface
+Obfuscator
+*/ ?> + +

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
    +
+
+There is also a batch file for windows and a script file for unix, +that you can use. Adapt the CLASSPATH in the file and put it to a +convenient location. +
+  jar -xvf jode-xxx.jar bin/jode.bat resp. bin/jode
+
+ +

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.Main with the options. The +following command will give a complete list of the available commands: + +
java jode.decompiler.Main --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.decompiler.Window
+ +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 link +page. You can invoke it like this: +
+java jode.swingui.Main --classpath classes.jar
+
+ +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 useful to browse through class files if +you don't have the source code. You can also use it to trace bugs in +library code. It is not meant to generate java files and so +you won't find a save option there.
+ +

Java Interface

 + +If you want to integrate JODE into your own java program, you +can use the jode.decompiler.Decompiler +class. Note that the GPL only allows you to integrate JODE +into GPL programs. Please contact me if you use JODE in this +way.
+ +You may use this stripped +down jar archive containing all necessary classes. + +

Using the Obfuscator

+ +To use the obfuscator you should first create a script file, say myproject.jos. Then you can invoke the +obfuscator with: +
+java jode.obfuscator.Main myproject.jos
+
+ +

The script file should contain the following options:

+ +

First select the classpath. You should include everything in the +classpath that you need to run your application. This also includes +the system class files (Sun puts them into classes.zip or +rt.jar))

+
+classpath = "c:\\jdk1.2\\jre\\lib\\rt.jar","d:\\project\\java",
+     "ftp://www.myorg.org/pub/classlib.jar"
+
+ +

Specify where you want the obfuscated classes to go. I recommend +to write them directly into a zip file, but you can also give a +directory.

+
+dest = "obfuscated.zip"
+
+ +

You can make JODE write its translation table. This table +can be used later to undo the name obfuscation, or you can look there +to decrypt exceptions you may get.

+
+revtable = "translat.tbl"
+
+ +

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. If you give a +package, all classes and subpackages are loaded. You can also use +* as wild card, that matches everything (including dots). +

+
+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.ApplicationClass.main.*" },
+           new WildCard { value = "org.myorg.AppletClass.<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 not legal bytecode either. Some paranoid +web browsers refuse to run applets containing keywords as identifiers +(and they are completely within the Java VM spec).
+
+
+renamer = new StrongRenamer
+
+ +

You can also create a renaming table with the same format as the +table written by revtable. The entries in the table get precedence +over renamer. Entries not in the table will get renamed by the +renamer.

+

+table = "translat.tbl"
+
+ +

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 of the constant, or +remove them completely.
This analyzer is especially useful to +revert the flow obfuscation of some other obfuscators.
+
+

+
+analyzer = new ConstantAnalyzer
+
+ +

Pre- and Post transformers transform the bytecode before +resp. after the Analyzer runs. Using this default should be okay. +You may remove the LocalOptimizer, though, if you have problems.

+

In the future I may add some new post transformers, that do string +encryption, flow obfuscation and similar things. If you want to write +your own Transformers please contact me, since the next version will +change the bytecode interface.

+
+post = new LocalOptimizer, new RemovePopAnalyzer
+
+