[Soot-list] Can I ask for a code snippet of creating call graph for a library (no main class)?

[Yi Lin]

Hi,

I finally solved this. I will attach my code at the end (it may help 
others perhaps, and any improvements are welcome).

But I now have another problem with Soot. Basically I need AST and call 
graph for my work. I got call graph now, but how can I get AST from 
soot? I see that Dava could decompile bytecode and construct AST. But I 
assume soot should maintian ASTs when it do transformation. What is a 
straightforward way to get AST in soot?

Thank you very much.

Regards,
Yi

-------------------
code for generating call graph for library (no main class):

build call graph:
     // PackManager manages the packs containing the various phases and 
their options
     PackManager.v().getPack("wjtp").add(new Transform("wjtp.myTrans", 
new SceneTransformer() {
       @Override
       protected void internalTransform(String phaseName, Map options) {
         CHATransformer.v().transform();
       }
     }));

     Options.v().set_whole_program(true);
     Options.v().set_process_dir(Arrays.asList(libDir)); //library dir
Options.v().set_soot_classpath("../rt.jar:"+libDir+":../jce.jar:."); 
//library dir along with rt.jar/jce.jar from JRE/JDK

     Scene.v().setEntryPoints(getAllMethods());
     Scene.v().loadNecessaryClasses();
     PackManager.v().getPack("wjtp").apply();

get all methods (as entrypoints):

public List<SootMethod> getAllMethods() {
     ArrayList<SootMethod> entrypoints = new ArrayList<SootMethod>();
     for (String klassName : allClasses) {
         // klassName such as org.abc.MyClass
         Scene.v().forceResolve(klassName, SootClass.SIGNATURES);
         SootClass klass = Scene.v().getSootClass(klassName);

         // adding all non-abstract method as entrypoint
         for (SootMethod m : klass.getMethods()) {
           if (!m.isAbstract()) {
             entrypoints.add(m);
           }
         }
       }
     return entrypoints;
}

use call graph:

     SootClass klass = Scene.v().getSootClass(someClassYouAreInterested);
     SootMethod method = klass.getMethodByName(someMethodYouAreInterested);
     CallGraph cg = Scene.v().getCallGraph();
     Iterator<MethodOrMethodContext> sources = new 
Sources(cg.edgesInto(focus));
     while (sources.hasNext()) {
       SootMethod src = (SootMethod)sources.next();
       System.out.println(method + " is called by " + src);
     }

On 26/06/12 14:17 , Z wrote:
> It  might be more efficient that you learn them like -w, entrypoints
> etc... one by one. Most of them can be found in the survivor's guide.
>
> If you don't know whether to use such such options, try them!
>
> Cheers,
> Zell.
>
>> long list of questions, like whether to use whole program mode '-w',
>> what should be set as 'entrypoints', whether to use
>> CHATransformer.v().transform() or
>> PhaseOptions.v().setPhaseOption("cg.cha", "enabled:true") then
>> runPacks(), what is the timing to do that, etc. A code snippet would
>> answer all those annoying questions for me...
>>
>> Thank you very much.
>>
>> Regards,
>> Yi
>> _______________________________________________
>> Soot-list mailing list
>> Soot-list at sable.mcgill.ca
>> http://mailman.cs.mcgill.ca/mailman/listinfo/soot-list
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