Package com.ibm.wala.dalvik.ipa.callgraph.androidModel

package com.ibm.wala.dalvik.ipa.callgraph.androidModel
Inserts synthetic code that resembles Androids lifecycle.

It generates a new synthetic class (AndroidModelClass) containing all methods necessary to do so.

To model add a lifecycle-model one has to do the following steps:

1. Scan for the Entrypoints of the application AndroidEntryPointLocator epl = new AndroidEntryPointLocator(options); List<AndroidEntryPoint> entrypoints = epl.getEntryPoints(cha); AndroidEntryPointManager.ENTRIES = entrypoints; 2. Optionally read in the AndroidManifest.xml final AndroidManifestXMLReader reader = new AndroidManifestXMLReader(manifestFile); 3. Optionally change the order of entrypoints and change the instantiation behaviour 4. Create the model and use it as the new entrypoint of the analysis IMethod model = new AndroidModel(cha, p.options, p.scfg.cache).getMethod();

The model generated that way will "start" all components of the App. The various start-calls occurring in these components will not yet call anything useful. To change this there are two possibilities

* Insert a MethodTargetSelector: This works context-insensitive so if a call of "startActivity" is encountered a new model starting _all_ the Activities is generated.

TODO: This is about to change! AnalysisOptions options; ActivityMiniModel activities = new ActivityMiniModel(cha, p.options, p.scfg.cache); options.setSelector(new DelegatingMethodTargetSelector(activities.overrideAll(), options.getMethodTargetSelector()));

* Resolve the calls context-sensitive: In Android all calls to different components use an Intent. The IntentContextSelector remembers all Intents generated in the course of the analysis and attaches them to the start-calls as Context.

The IntentContextInterpreter then replaces the IR of the start-calls to start only the resolved component (or a placeholder like startExternalACTIVITY) final ContextSelector contextSelector = new IntentContextSelector(new DefaultContextSelector(options, cha)) final SSAContextInterpreter contextInterpreter = new FallbackContextInterpreter(new DelegatingSSAContextInterpreter( new IntentContextInterpreter(cha, options, cache), new DefaultSSAInterpreter(options, cache)));

For the context-sensitive stuff to be able to resolve the targets either the AndroidManifest.xml should have been read or overrides been placed manually (or both).

Since:
2013-10-25
Author:
Tobias Blaschke <code@tobiasblaschke.de>