[Soot-list] Soot not finding class without a main for call graph

[Fogo Tunde-Onadele]

Good day,

I have been trying to get Soot working on analyzing the call graph of
external libraries/apps. Specifically, I want to get the call graph of a
class, ‘DefaultServlet’, within a Tomcat jar file, ‘catalina.jar’. First, I
followed tutorials that analyze a simple class/file with a main method.
However, the classes I want to analyze don’t typically have main methods.
So I found and followed examples that utilize entrypoints but Soot is still
unable to find the class. Please, I would appreciate some help. Here is the
latest main piece of code I have tried.


```

> public class IFDSDataFlowTransformer extends SceneTransformer {
>
> static LinkedList<String> excludeList;
> static String mainclass = "DefaultServlet";
> static String mainmethod = "doGet"; // "doPut";
>
> public static void main(String[] args) {
>
> // Set Soot's internal classpath
>    String javapath = System.getProperty("java.class.path");
>    String jredir = System.getProperty("java.home")+"/lib/rt.jar";
>    String path = javapath+File.pathSeparator+jredir;
>    Options.v().set_soot_classpath(path);
>
>         // Enable whole-program mode
>         Options.v().set_whole_program(true);
>         Options.v().set_app(true);
>
>         // Call-graph options
>         Options.v().setPhaseOption("cg", "safe-newinstance:true");
>         Options.v().setPhaseOption("cg.cha","enabled:false");
>
>         // Enable SPARK call-graph construction
>         Options.v().setPhaseOption("cg.spark","enabled:true");
>         Options.v().setPhaseOption("cg.spark","verbose:true");
>         Options.v().setPhaseOption("cg.spark","on-fly-cg:true");
>
>         Options.v().set_allow_phantom_refs(true);
>
>         // Set the main class of the application to be analysed
>         Options.v().set_main_class(mainclass);
>
>         // Load the main class
>         SootClass c = Scene.v().loadClass(mainclass, SootClass.BODIES);
>         c.setApplicationClass();
>
>         // Load the "main" method of the main class and set it as a Soot
> entry point
> //        SootMethod entryPoint = c.getMethodByName("main");
>         SootMethod entryPoint = c.getMethodByName(mainmethod);
>         List<SootMethod> entryPoints = new ArrayList<SootMethod>();
>         entryPoints.add(entryPoint);
>         Scene.v().setEntryPoints(entryPoints);
>
>         PackManager.v().getPack("wjtp").add(new
> Transform("wjtp.herosifds", new IFDSDataFlowTransformer()));
>
> //        soot.Main.main();
>         //start working
>    PackManager.v().runPacks();
> }



```


I am using Soot 3.3.1, Java 1.8 and I have exported my eclipse project in a
zip below (project structure in photo). The files, IFDSDataFlowTransformer
and TestSootCallGraph, start two separate trials.

Do I have to create a new class with a main that would start a request
(e.g. http or curl request) to the Tomcat application? If so, that would
require including more Tomcat jars/files in the project. However, I figured
that Soot did not need specific inputs or all files in an application to
statically analyze code.

Thank you,

Fogo




--
Fogo Tunde-Onadele
PhD student
Computer Science
North Carolina State University
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