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Make FlowDroid's Android entry point creator more extensible #842

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Merged
StevenArzt merged 1 commit into from
Nov 13, 2025
Merged

Make FlowDroid's Android entry point creator more extensible #842

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6 changes: 5 additions & 1 deletion ...src/soot/jimple/infoflow/android/entryPointCreators/AbstractAndroidEntryPointCreator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,11 +29,15 @@ public AbstractAndroidEntryPointCreator(IManifestHandler manifest) {
@Override
public SootMethod createDummyMain() {
// Initialize the utility class
this.entryPointUtils = new AndroidEntryPointUtils();
this.entryPointUtils = createEntryPointUtils();

return super.createDummyMain();
}

protected AndroidEntryPointUtils createEntryPointUtils() {
return new AndroidEntryPointUtils();
}

protected Stmt searchAndBuildMethod(String subsignature, Local classLocal) {
return searchAndBuildMethod(subsignature, classLocal, Collections.<SootClass>emptySet());
}
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20 changes: 14 additions & 6 deletions ...w-android/src/soot/jimple/infoflow/android/entryPointCreators/AndroidEntryPointUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -96,14 +96,14 @@ public ComponentType getComponentType(SootClass currentClass) {

// Check the type of this class
ComponentType ctype = ComponentType.Plain;
FastHierarchy fh = Scene.v().getOrMakeFastHierarchy();
FastHierarchy fh = getFastHierarchy();

if (fh != null) {
// We first look for the specialized types

// (a1) android.app.Fragment
if (osClassFragment != null && Scene.v().getOrMakeFastHierarchy().canStoreType(currentClass.getType(),
osClassFragment.getType()))
if (osClassFragment != null
&& getFastHierarchy().canStoreType(currentClass.getType(), osClassFragment.getType()))
ctype = ComponentType.Fragment;
else if (osClassSupportFragment != null
&& fh.canStoreType(currentClass.getType(), osClassSupportFragment.getType()))
Expand Down Expand Up @@ -168,7 +168,7 @@ else if (osClassContentProvider != null
*/
public boolean isApplicationClass(SootClass clazz) {
return osClassApplication != null
&& Scene.v().getOrMakeFastHierarchy().canStoreType(clazz.getType(), osClassApplication.getType());
&& getFastHierarchy().canStoreType(clazz.getType(), osClassApplication.getType());
}

/**
Expand All @@ -180,7 +180,7 @@ public boolean isApplicationClass(SootClass clazz) {
*/
public boolean isComponentFactoryClass(SootClass clazz) {
return osClassComponentFactory != null
&& Scene.v().getOrMakeFastHierarchy().canStoreType(clazz.getType(), osClassComponentFactory.getType());
&& getFastHierarchy().canStoreType(clazz.getType(), osClassComponentFactory.getType());
}

/**
Expand Down Expand Up @@ -291,7 +291,7 @@ private static Collection<? extends MethodOrMethodContext> getLifecycleMethods(S
SootMethodRepresentationParser parser = SootMethodRepresentationParser.v();

Scene scene = Scene.v();
FastHierarchy fh = Scene.v().getOrMakeFastHierarchy();
FastHierarchy fh = scene.getOrMakeFastHierarchy();
nextMethod: for (String sig : methods) {
SootClass currentClass = sc;
String name = parser.getMethodNameFromSubSignature(sig);
Expand Down Expand Up @@ -328,6 +328,14 @@ private static Collection<? extends MethodOrMethodContext> getLifecycleMethods(S
return lifecycleMethods;
}

/**
* Returns the used fast hierarchy
* @return the used fast hierarchy
*/
protected FastHierarchy getFastHierarchy() {
return Scene.v().getOrMakeFastHierarchy();
}

/**
* Checks whether a method is potentially callable from JavaScript
* @param m the method
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