sandmark.obfuscate.UltimateReorderer.ConstantPoolReorderer
Class CPReorderer

java.lang.Object
  |
  +--sandmark.Algorithm
        |
        +--sandmark.obfuscate.GeneralObfuscator
              |
              +--sandmark.obfuscate.AppObfuscator
                    |
                    +--sandmark.obfuscate.UltimateReorderer.ConstantPoolReorderer.CPReorderer

public class CPReorderer

extends AppObfuscator

CPReorderer ,reorders all the constants in the constantpool. The constantpool indices are randomly assigned some unique index within the length of the constantpool, and changes should also be made to reflect w.r.to indices in the constant pool.

Author:

Ashok Purushotham Ramasamy Venkatraj (ashok@cs.arizona.edu)

Field Summary

(package private) int	cplen
(package private) int	cur_mtd
(package private) boolean	errflag
(package private) de.fub.bytecode.generic.Instruction[]	in
(package private) int	lvindex
(package private) int	no_of_locals

Constructor Summary

CPReorderer()
Constructor

Method Summary

void	apply(ClassFileCollection cfc) Calls the other methods to obfuscate the class file
void	dump(ClassFileCollection cfc) Dump the changes back to the jar file
int	editIndex(int instrtype, int k, int newval, de.fub.bytecode.generic.InstructionList local_il, int[] local_pos)
java.lang.String	getAlgHTML() Gives a description of what the algorithm does.
java.lang.String	getAlgURL() Specifies the URL of where the user can find more information about the algorithm.
java.lang.String	getAuthor() Specifies the author of the algorithm.
java.lang.String	getAuthorEmail() Specifies the email address author of the algorithm.
ConfigProperties	getConfigProperties() Get the properties of NodeSplitter
java.lang.String	getDescription() Specifies what this algorithm does, briefly.
java.lang.String	getLongName() Specifies this algorithm's long name.
ModificationProperty[]	getMutations() Specifies the types of modifications that the algorithm makes.
java.lang.String	getShortName() Specifies this algorithm's short name.
int	initialize(ClassFileCollection cfc, java.lang.String classname) Gets all the BCEL bytecode editing class objects up and running
void	makechangestoClassGen(java.util.Hashtable ht)
void	makechangestoCode(java.util.Hashtable ht, de.fub.bytecode.generic.ConstantPoolGen newone)
void	randomCPindexgen(java.lang.String classname) The main function that coordinates the calls to all other functions which actually do the algorithm
int	search(int[] intf, int index)
void	setConfigProperties(ConfigProperties props) Set the properties of NodeSplitter

Methods inherited from class sandmark.obfuscate.AppObfuscator

toString

Methods inherited from class sandmark.Algorithm

getPostprohibited, getPostrequisites, getPostsuggestions, getPreprohibited, getPrerequisites, getPresuggestions, getReferences

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

in

de.fub.bytecode.generic.Instruction[] in

errflag

boolean errflag

no_of_locals

int no_of_locals

lvindex

int lvindex

cur_mtd

int cur_mtd

cplen

int cplen

Constructor Detail

CPReorderer

public CPReorderer()

Constructor

Method Detail

initialize

public int initialize(ClassFileCollection cfc,
                      java.lang.String classname)

Gets all the BCEL bytecode editing class objects up and running

Parameters:

cfc -

classname -

makechangestoClassGen

public void makechangestoClassGen(java.util.Hashtable ht)

search

public int search(int[] intf,
                  int index)

randomCPindexgen

public void randomCPindexgen(java.lang.String classname)

The main function that coordinates the calls to all other functions which actually do the algorithm

makechangestoCode

public void makechangestoCode(java.util.Hashtable ht,
                              de.fub.bytecode.generic.ConstantPoolGen newone)

editIndex

public int editIndex(int instrtype,
                     int k,
                     int newval,
                     de.fub.bytecode.generic.InstructionList local_il,
                     int[] local_pos)

apply

public void apply(ClassFileCollection cfc)
           throws java.lang.Exception

Calls the other methods to obfuscate the class file

Specified by:

apply in class AppObfuscator

Parameters:

cfc -

java.lang.Exception

dump

public void dump(ClassFileCollection cfc)

Dump the changes back to the jar file

Parameters:

cfc -

getMutations

public ModificationProperty[] getMutations()

Description copied from class: Algorithm

Specifies the types of modifications that the algorithm makes. For more information see ModificationProperty.

Specified by:

getMutations in class Algorithm

Returns:

a list of mutations that this algorithm may do on the code

getConfigProperties

public ConfigProperties getConfigProperties()

Get the properties of NodeSplitter

Specified by:

getConfigProperties in class Algorithm

Returns:

the parameters for this run of the algorithm

setConfigProperties

public void setConfigProperties(ConfigProperties props)

Set the properties of NodeSplitter

Specified by:

setConfigProperties in class Algorithm

Parameters:

props -

getShortName

public java.lang.String getShortName()

Description copied from class: Algorithm

Specifies this algorithm's short name. A short name should be no longer than 20 characters, and contain capitalized space delimited words (i.e. title case). For example, an obfuscation that sets all of the fields in a jar file to public scoping should have a short name like "Set Fields Public".

Specified by:

getShortName in class Algorithm

Returns:

the short name for this algorithm

getDescription

public java.lang.String getDescription()

Description copied from class: Algorithm

Specifies what this algorithm does, briefly. This description is displayed to the user in the log of execution in Sandmark.

Specified by:

getDescription in class Algorithm

Returns:

a brief description of the algorithm

getAuthor

public java.lang.String getAuthor()

Description copied from class: Algorithm

Specifies the author of the algorithm.

Specified by:

getAuthor in class Algorithm

Returns:

the name of the author of the algorithm

getAuthorEmail

public java.lang.String getAuthorEmail()

Description copied from class: Algorithm

Specifies the email address author of the algorithm.

Specified by:

getAuthorEmail in class Algorithm

Returns:

the email address of the author of the algorithm

getLongName

public java.lang.String getLongName()

Description copied from class: Algorithm

Specifies this algorithm's long name. There is no limit on the size of the long name, but it should be in title case.

Specified by:

getLongName in class Algorithm

Returns:

the long name for this algorithm

getAlgHTML

public java.lang.String getAlgHTML()

Description copied from class: Algorithm

Gives a description of what the algorithm does. This should not be a long description of what your code does, rather a brief description as to what effect it has on the program. For example, a good algorithm description would be "Set Fields Public changes the scope of all static and non-static fields to public."; a bad algorithm description would be "Set Fields Public creates a BCEL object for each class and makes modifications to it, then stores it back into the jar file."

Specified by:

getAlgHTML in class Algorithm

Returns:

an HTML formatted description of what the algorithm does.

getAlgURL

public java.lang.String getAlgURL()

Description copied from class: Algorithm

Specifies the URL of where the user can find more information about the algorithm. This URL should point to the help.html file in the doc directory where the algorithm resides, starting from the sandmark directory. For example, the URL for the static_template watermarking sample would be sandmark/watermark/static_template/doc/help.html

Specified by:

getAlgURL in class Algorithm

Returns:

a URL to the help.html file for the algorithm