git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@1269 379699f6-c40d-0410-875b-85095c16579emaster
hoenicke
24 years ago
parent
1a0fc97111
commit
571bb071fe
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options = tabwidth,indent,style,linewidth,import,verbose,lvt,inner,anonymous,push,pretty,decrypt,onetime,immediate,verify,contrafo,debug |
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|
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tabwidth.0=<n> |
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tabwidth.1=Set tab width to n. |
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tabwidth.2=This means that Jode uses tabs to replace n spaces. \ |
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Don't confound this with the indent option. Use 0 if you don't want \ |
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tabs. Default is 8. |
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|
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indent.0=<n> |
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indent.1=Indent blocks by n spaces. |
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|
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style.0={sun|gnu} |
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style.1=Specify indentation style. |
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|
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linewidth.0=<n> |
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linewidth.1=Set maximum line width to n. |
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linewidth.2=Jode breaks lines that are longer than this. It tries it's best \ |
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to make all lines fit in this limit, but sometimes this won't succeed. |
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|
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import.0=<pkglimit>,<clslimit> |
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import.1=import classes if they occur more than clslimit times and packages \ |
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with more than pkglimit used classes. Default is 0,1 which means that all \ |
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used classes are imported, but never a whole package. |
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|
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verbose.0=<n> |
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verbose.1=Be verbose (higher n means more verbose). |
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verbose.2=This prints some information about the currently decompiled \ |
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class or method to the console. |
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|
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debug.0=<flag>,... |
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debug.1=Enable debugging options. Useful to track errors in the decompiler. |
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debug.2=Possible flags are: \ |
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"bytecode", to print raw bytecode. \ |
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"lvt", dump LocalVariableTable. \ |
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"verifier", to trace bytecode verification. \ |
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"check", do time consuming sanity checks; useful to spot serious errors. \ |
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"types", to see the type intersections. \ |
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"flow", for a very verbose trace of the decompile process. \ |
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"analyze", briefly inform about "T1/T2" analyzation. \ |
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"inout", to view the in/out local variable analyzation. \ |
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"locals", to see how local variable merging is done. \ |
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"constructors", to trace constructor transformation. \ |
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"interpreter", to follow the execution of the interpreter \ |
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(the interpreter is used for string decryption). |
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|
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inner.0={yes|no} |
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inner.1=(Don't) decompiler inner classes. |
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|
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anonymous.0={yes|no} |
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anonymous.1=(Don't) decompiler method scoped classes. |
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|
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contrafo.0={yes|no} |
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contrafo.1=(Don't) transform constructors. |
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|
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lvt.0={yes|no} |
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lvt.1=(Don't) use the local variable table. |
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lvt.2=Turning it off is useful if an obfuscator filled it with bogus values. |
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|
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pretty.0={yes|no} |
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pretty.1=(Don't) use `pretty' names for local variables. |
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pretty.2=The non pretty names have the advantage, that their names are \ |
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unique. This make search & replace possible. |
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|
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push.0={yes|no} |
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push.1=Allow PUSH pseudo instructions in output. |
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push.2=Sometimes, when methods were inlined, Jode can't reconstruct \ |
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the original expression. It has to split a complex expression into \ |
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several ones, using temporary variables. If this option is on, it won't \ |
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use the temporary variables, but uses pseudo PUSH/POP instructions instead, \ |
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as they are in the bytecode. |
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|
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decrypt.0={yes|no} |
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decrypt.1=(Don't) decrypt encrypted strings. |
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decrypt.2=Some obfuscators encrypt all strings. To decrypt them at runtime \ |
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they add a small decryption routine to the code. If Jode detects such a \ |
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decryption routine it interprets it to decrypt the strings at decompile time. |
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|
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onetime.0={yes|no} |
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onetime.1=(Don't) remove locals that written and then immediately read. |
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onetime.2=When javac inlines a method it uses temporary local variables for \ |
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the parameters. Often these local variables can be removed, which makes \ |
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the code much better to read. |
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immediate.0={yes|no} |
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immediate.1=Output the source immediately as it gets decompiled. |
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immediate.2=This leads to more instant output, but has many disadvantages.\ |
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For one the import statements can't be correct. But it also may lead to \ |
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buggy code. The advantage is, that you can get partial output even if an |
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exception is thrown. |
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|
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verify.0={yes|no} |
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verify.1=(Don't) verify code before decompiling it. |
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verify.2=Jode assumes at many places that your byte code is legal. To \ |
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be sure it verifies it before decompiling. If verification fails it \ |
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rejects the code. Since verification can fail for legal code if the \ |
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type hierarchy is not known, you can turn this option off. |
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@ -0,0 +1,50 @@ |
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/* IdentityRenamer Copyright (C) 1999 Jochen Hoenicke. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2, or (at your option) |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; see the file COPYING. If not, write to |
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* $Id$ |
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*/ |
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|
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package jode.obfuscator.modules; |
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import jode.obfuscator.Renamer; |
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import jode.obfuscator.Identifier; |
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///#def COLLECTIONS java.util
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import java.util.Iterator; |
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///#enddef
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///#def COLLECTIONEXTRA java.lang
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import java.lang.UnsupportedOperationException; |
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///#enddef
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public class IdentityRenamer implements Renamer { |
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public Iterator generateNames(Identifier ident) { |
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final String base = ident.getName(); |
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return new Iterator() { |
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int last = 0; |
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public boolean hasNext() { |
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return true; |
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} |
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public Object next() { |
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return (last++ == 0 ? base : base + last); |
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} |
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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}; |
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} |
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} |
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@ -0,0 +1,134 @@ |
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#!/usr/bin/perl |
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# createStackDelta.pl Copyright (C) 1999 Jochen Hoenicke. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2, or (at your option) |
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# any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; see the file COPYING. If not, write to |
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# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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# |
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# $Id$ |
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# This perl script creates the stackDelta string needed by |
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# jode.bytecode.Instruction. |
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my $OPCODEFILE="jode/bytecode/Opcodes.java"; |
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my @delta; |
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my $lastOpcode = 0; |
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my $nr; |
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open OPCODES, "<$OPCODEFILE"; |
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while (<OPCODES>) { |
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next unless /opc_([a-z0-9_]+)\s*=\s*(\d+)/; |
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$_ = $1; |
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$nr = $2; |
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if (/^(nop|iinc)$/) { |
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# no pop, no push |
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$delta[$nr] = "000"; |
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} elsif (/^([aif](const|load).*|[sb]ipush|ldc(_w)?)$/) { |
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# no pop, one push |
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$delta[$nr] = "010"; |
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} elsif (/^([ld](const|load).*|ldc2_w)$/) { |
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# no pop, two push |
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$delta[$nr] = "020"; |
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} elsif (/^([aif]store.*|pop)$/) { |
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# one pop, no push |
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$delta[$nr] = "001"; |
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} elsif (/^([ld]store.*|pop2)$/) { |
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# two pop, no push |
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$delta[$nr] = "002"; |
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} elsif (/^[aifbcs]aload$/) { |
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# two pop, one push |
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$delta[$nr] = "012"; |
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} elsif (/^[dl]aload$/) { |
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# two pop, two push |
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$delta[$nr] = "022"; |
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} elsif (/^[aifbcs]astore$/) { |
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# three pop, no push |
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$delta[$nr] = "003"; |
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} elsif (/^[dl]astore$/) { |
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# four pop, no push |
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$delta[$nr] = "004"; |
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} elsif (/^dup(2)?(_x([12]))?$/) { |
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$count = $1 ? 2 : 1; |
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$depth = $2 ? $3 : 0; |
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$pop = $count + $depth; |
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$push = $pop + $count; |
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$delta[$nr] = "0".$push.$pop; |
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} elsif (/^swap$/) { |
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# two pop, two push |
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$delta[$nr] = "022"; |
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} elsif (/^[if](add|sub|mul|div|rem|u?sh[lr]|and|or|xor)$/) { |
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# two pop, one push |
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$delta[$nr] = "012"; |
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} elsif (/^[ld](add|sub|mul|div|rem|and|or|xor)$/) { |
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# four pop, two push |
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$delta[$nr] = "024"; |
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} elsif (/^[if]neg$/) { |
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# one pop, one push |
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$delta[$nr] = "011"; |
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} elsif (/^[ld]neg$/) { |
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# two pop, two push |
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$delta[$nr] = "022"; |
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} elsif (/^lu?sh[lr]$/) { |
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# 3 pop, two push |
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$delta[$nr] = "023"; |
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} elsif (/^[if]2[ifbcs]$/) { |
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# one pop, one push |
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$delta[$nr] = "011"; |
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} elsif (/^[if]2[ld]$/) { |
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# one pop, two push |
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$delta[$nr] = "021"; |
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} elsif (/^[ld]2[if]$/) { |
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# two pop, one push |
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$delta[$nr] = "012"; |
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} elsif (/^[ld]2[ld]$/) { |
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# two pop, two push |
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$delta[$nr] = "022"; |
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} elsif (/^fcmp[lg]$/) { |
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$delta[$nr] = "012"; |
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} elsif (/^[ld]cmp[lg]?$/) { |
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$delta[$nr] = "014"; |
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} elsif (/^if_[ia]cmp(eq|ne|lt|ge|le|gt)$/) { |
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$delta[$nr] = "002"; |
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} elsif (/^(if(eq|ne|lt|ge|le|gt|(non)?null)|tableswitch|lookupswitch)$/) { |
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# order does matter |
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$delta[$nr] = "001"; |
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} elsif (/^(goto(_w)?|jsr(_w)?|ret|return)$/) { |
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$delta[$nr] = "000"; |
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} elsif (/^([ifa]return)$/) { |
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$delta[$nr] = "001"; |
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} elsif (/^([ld]return)$/) { |
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$delta[$nr] = "002"; |
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} elsif (/^(new)$/) { |
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$delta[$nr] = "010"; |
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} elsif (/^(multianewarray|(get|put|invoke).*)$/) { |
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# unknown |
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$delta[$nr] = "100"; |
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} elsif (/^(athrow|monitor(enter|exit))$/) { |
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$delta[$nr] = "001"; |
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} elsif (/^(a?newarray|arraylength|checkcast|instanceof)$/) { |
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$delta[$nr] = "011"; |
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} else { |
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# illegal |
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next; |
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} |
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$lastOpcode = $nr |
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if ($nr > $lastOpcode); |
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} |
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print " private final static String stackDelta = \n\t\""; |
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for ($nr = 0; $nr <= $lastOpcode; $nr ++) { |
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defined $delta[$nr] or $delta[$nr] = "177"; |
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print "\\$delta[$nr]"; |
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} |
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print "\";\n"; |
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@ -0,0 +1,40 @@ |
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public class CheckPrivate { |
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private class InnerClass { |
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private int field; |
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private InnerClass(int j) { |
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field = j; |
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} |
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private int method(int a) { |
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int old = field; |
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field = a; |
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return old; |
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} |
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private void test() { |
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outerField = 4; |
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outerMethod(); |
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System.err.println(outerField); |
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new CheckPrivate(); |
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} |
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} |
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private int outerField; |
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private int outerMethod() { |
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return outerField; |
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} |
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private CheckPrivate() { |
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InnerClass inner = new InnerClass(1); |
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inner.field = 3; |
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inner.method(inner.field); |
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} |
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public static void main(String[] test) { |
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new CheckPrivate(); |
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} |
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} |
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@ -0,0 +1,28 @@ |
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public class CheckSuperRemove { |
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public class Inner { |
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public void test() { |
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class MyInner extends Inner { |
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} |
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MyInner myInner = new MyInner(); |
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Inner anonInner = new Inner() { |
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public void test() {} |
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}; |
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MyInner anonInner2 = new MyInner() { |
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public void test() {} |
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}; |
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} |
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} |
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public class SubInner extends Inner { |
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public SubInner(int a) { |
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} |
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public SubInner() { |
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} |
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} |
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public static void main(String[] param) { |
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new CheckSuperRemove().new SubInner(); |
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new CheckSuperRemove().new SubInner(1); |
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} |
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} |
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