How to tell proguard to keep enum constants and fields

Question

I've try obfuscate our web application which use spring, jaxb and relies on annotations, and reflection heavily. I apply many recipes found in internet to keep some classes, attributes, annotations and enumerations. But with enumerations still have problem. I've able preserve enum constants apply configuration from http://proguard.sourceforge.net/manual/examples.html#enumerations:

-keepclassmembers,allowoptimization enum * {     public static **[] values();     public static ** valueOf(java.lang.String); } 

At first glance it looks like working solution and constant preserved, so (Class.getEnumConstants()) return correct list of values. But I got NoSuchFieldException when I try retrieve field by any of that by name.

Problem come from jaxb reflection navigator, please look at code:

public Field[] getEnumConstants(Class clazz) {     try {         Object[] values = clazz.getEnumConstants();         Field[] fields = new Field[values.length];         for (int i = 0; i < values.length; i++) {             fields[i] = clazz.getField(((Enum) values[i]).name());         }         return fields;     } catch (NoSuchFieldException e) {         // impossible         throw new NoSuchFieldError(e.getMessage());     } } 

I fall exactly into "impossible" branch. I think it will be easy understandable to look at debug session screenshot (there also listed constants):

And if I try obtain fields, they are listed obfuscated as a, b, c, d, e, f:

My proguard configuration now look like (strip out some library listing and kipp particular classes, fields and methods about proguard complain):

-injars  core-3.15.rc5.6.jar -outjars core-3.15.rc5.6.proguard.jar  -libraryjars <java.home>/lib/rt.jar  -libraryjars ... # Other libs listed, strip out for shortness  -printmapping core-3.15.rc5.6.proguard.map  -keep public class ru.rlh.egais.portal.backend.controller.rest.** -keep public class ru.rlh.egais.portal.backend.integration.soap.service.**  # http://midgetontoes.com/blog/2015/06/26/tips-for-using-proguard-with-spring-framework -optimizations !class/marking/final  -adaptresourcefilecontents **.properties,META-INF/MANIFEST.MF,META-INF/spring.*,spring/*  -keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,*Annotation*,EnclosingMethod # Also tried: # -keepattributes **  -allowaccessmodification -dontshrink -dontoptimize -dontusemixedcaseclassnames -keepdirectories -keep @org.springframework.transaction.annotation.Transactional class * -keep @org.springframework.stereotype.Service class * -keep @org.springframework.stereotype.Repository class * -keep @org.springframework.stereotype.Controller class * -keep @org.springframework.stereotype.Component class * -keep @org.springframework.beans.factory.annotation.Autowired class * -keep @org.springframework.web.bind.annotation.ResponseBody class * -keep @org.springframework.web.bind.annotation.RequestMapping class * -keep @org.springframework.stereotype.Repository class * -keep @javax.annotation.Resource class * -keep @org.springframework.cache.annotation.EnableCaching class * -keep @org.springframework.context.annotation.Configuration class *  -keepclassmembers class * {     @org.springframework.beans.factory.annotation.* *;     @org.springframework.beans.factory.annotation.Qualifier *;     @org.springframework.beans.factory.annotation.Value *;     @org.springframework.beans.factory.annotation.Required *;     @org.springframework.context.annotation.Bean *;     @javax.annotation.PostConstruct *;     @javax.annotation.PreDestroy *;     @org.aspectj.lang.annotation.AfterReturning *;     @org.aspectj.lang.annotation.Pointcut *;     @org.aspectj.lang.annotation.AfterThrowing *;     @org.aspectj.lang.annotation.Around *; }  -keepclassmembers enum * {     public static **[] values();     public static ** valueOf(java.lang.String); } 

So, my question how I could fully keep public enums from obfuscation? In both cases - use its constants (class.getEnumConstants()) and fields (class.getFields()).

Answer 1

Thanks to http://sourceforge.net/p/proguard/discussion/182455/thread/1c28f199/ I found solution for my question (<⁠fields> must be added):

-keepclassmembers class * extends java.lang.Enum {     <fields>;     public static **[] values();     public static ** valueOf(java.lang.String); } 

Answer 2

This worked fine for me.

-keep public enum com.company.appname.**{     *; } 

Where ** is package and subpackages.