YGuard does not obfuscate properly two libraries together

Question

I have an eclipse based application which uses YFiles library. I want to obfuscate YFiles & adjust obfuscated classes of YFiles libraries in my code.

I am executing this obfuscation via a Maven build triggering an ant script. My ant-script has the logic of obfuscation. This looks like--

<project name="obfuscate">
<target name="obf-modeler">
    <taskdef name="yguard" classname="com.yworks.yguard.YGuardTask" classpath="./lib/yguard.jar" />
    <yguard>
        <inoutpair in="yfiles.jar" out="obfyfiles.jar" />
        <inoutpair in="<my-app-jar>" out="<my-app-jar>" />
        <rename replaceClassNameStrings="true">
            <keep>
                <class classes="private" methods="private" fields="private">
                    <patternset>
                        <include name="com.<my-company-name>." />
                    </patternset>
                </class>
                <package>
                    <patternset>
                        <include name="com.<my-company-name>." />
                    </patternset>
                 </package>
            </keep>
            <adjust replaceContent="true">
                <include name="plugin.xml" />
            </adjust>
        </rename>
    </yguard>
</target>

I am obfuscating Yfiles & my code together so that YFiles obfuscation is incorporated in my code as well. I also have a patternset on class & package elements to tell YGaurd that "don't obfuscate my code, only adjust the YFiles obfuscation changes"

Unfortunately, if I run the maven build, Some public YFiles methods with some return type are not getting obfuscated. For example -- y.base.NodeMap class has methods obfuscated which don't have a return type, other methods who return something are still having old method names.

Any clue what is going wrong in my patter-set. Also, if I remove this pattern-set, there is no issue in YFiles obfuscation. However, my code is getting obfuscated too in that case which I don't want.

Thanks & regards Abhinaw

score 0 · Answer 1 · answered Jan 17 '14 at 10:07

It seems that you are subclassing / implementing interfaces or classes of the yFiles library. Note that if you are subclassing a class and tell yGuard to not obfuscate the subclass, the entiry class hierarchy is kept as well (this is necessary for the classloader). Just exclude your classes that extend/implement yFiles API classes in your keep rule. A pitfall here are anonymous classes. To avoid this, transform your anonymous classes to outer or inner classes and exclude these classes explicitly in your keep rule.

YGuard does not obfuscate properly two libraries together

1 Answers1