337 lines
15 KiB
Java
337 lines
15 KiB
Java
/*
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* This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html.
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*
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* This file is a derivative of code released under the terms listed below.
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*
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*/
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/*
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* Copyright (c) 2013,
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* Tobias Blaschke <code@tobiasblaschke.de>
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The names of the contributors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.ibm.wala.dalvik.ipa.callgraph.androidModel.stubs;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.logging.Logger;
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import com.ibm.wala.classLoader.CallSiteReference;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.dalvik.ipa.callgraph.androidModel.AndroidModel;
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import com.ibm.wala.dalvik.ipa.callgraph.androidModel.AndroidModelClass;
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import com.ibm.wala.dalvik.ipa.callgraph.androidModel.MiniModel;
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import com.ibm.wala.dalvik.ipa.callgraph.androidModel.parameters.Instantiator;
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import com.ibm.wala.dalvik.ipa.callgraph.impl.AndroidEntryPoint;
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import com.ibm.wala.dalvik.util.AndroidComponent;
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import com.ibm.wala.dalvik.util.AndroidEntryPointManager;
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import com.ibm.wala.ipa.callgraph.AnalysisCache;
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import com.ibm.wala.ipa.callgraph.AnalysisOptions;
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import com.ibm.wala.ipa.cha.IClassHierarchy;
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import com.ibm.wala.ipa.summaries.MethodSummary;
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import com.ibm.wala.ipa.summaries.SummarizedMethod;
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import com.ibm.wala.ipa.summaries.VolatileMethodSummary;
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import com.ibm.wala.shrikeBT.IInvokeInstruction;
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import com.ibm.wala.ssa.SSAInstruction;
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import com.ibm.wala.types.Descriptor;
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import com.ibm.wala.types.MethodReference;
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import com.ibm.wala.types.TypeName;
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import com.ibm.wala.types.TypeReference;
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import com.ibm.wala.util.CancelException;
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import com.ibm.wala.util.ssa.ParameterAccessor;
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import com.ibm.wala.util.ssa.SSAValue;
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import com.ibm.wala.util.ssa.SSAValueManager;
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import com.ibm.wala.util.ssa.TypeSafeInstructionFactory;
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import com.ibm.wala.util.strings.Atom;
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/**
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* This Model is used to start an Android-Component of unknown Target.
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*
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* All internal Components of a Type (if given) then an ExternalModel is called.
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* Used by the IntentContextInterpreter.
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*
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* @see com.ibm.wala.dalvik.ipa.callgraph.propagation.cfa.IntentContextInterpreter
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*
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* @author Tobias Blaschke <code@tobiasblaschke.de>
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* @since 2013-10-18
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*/
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public class UnknownTargetModel extends AndroidModel {
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public final Atom name;
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private boolean doMini = true;
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private MiniModel miniModel = null;
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private ExternalModel externalModel = null;
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private final AndroidComponent target;
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// uses AndroidModel.cha;
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/**
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* The UnknownTargetModel does not call any entrypoints on it's own.
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*
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* Instead it first creates a restricted AndroidModel and an ExternalModel.
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* These are actually called.
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*/
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@Override
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protected boolean selectEntryPoint(AndroidEntryPoint ep) {
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return false;
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}
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/**
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* @param target Component Type, may be null: No restrictions are imposed on AndroidModel then
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*/
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public UnknownTargetModel(final IClassHierarchy cha, final AnalysisOptions options, final AnalysisCache cache,
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AndroidComponent target) throws CancelException {
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super(cha, options, cache);
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if (target == null) { // TODO: Enable
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throw new IllegalArgumentException("The component type requested to create an UnknownTargetModel for was null");
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}
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String sName = target.toString();
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String cName = Character.toUpperCase(sName.charAt(0)) + sName.substring(1).toLowerCase();
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this.name = Atom.findOrCreateAsciiAtom("startUnknown" + cName);
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this.target = target;
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//this.allInternal = new MiniModel(cha, options, cache, target);
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//this.external = new ExternalModel(cha, options, cache, target);
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}
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//@Override
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private void register(SummarizedMethod model) {
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AndroidModelClass mClass = AndroidModelClass.getInstance(cha);
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if (!(mClass.containsMethod(model.getSelector()))) {
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mClass.addMethod(model);
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}
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}
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@Override
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public SummarizedMethod getMethod() throws CancelException {
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if (!built) {
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super.build(this.name);
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this.register(super.model);
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}
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return super.model;
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}
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@Override
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protected void build(Atom name, Collection<? extends AndroidEntryPoint> entrypoints) throws CancelException {
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assert ((entrypoints == null) || (! entrypoints.iterator().hasNext()));
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{ // Check if this Application has components, that implement target. If not we don't
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// have to build a MiniModel.
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doMini = false;
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for (final AndroidEntryPoint ep : AndroidEntryPointManager.ENTRIES) {
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if (ep.belongsTo(this.target)) {
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doMini = true;
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break;
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}
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}
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}
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if (doMini) {
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miniModel = new MiniModel(this.cha, this.options, this.cache, this.target);
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}
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externalModel = new ExternalModel(this.cha, this.options, this.cache, this.target);
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final Descriptor descr;
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// final Selector selector;
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{
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if (doMini) {
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final TypeName[] othersA = miniModel.getDescriptor().getParameters();
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final Set<TypeName> others;
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if (othersA != null) {
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others = new HashSet<TypeName>(Arrays.asList(othersA));
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} else {
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others = new HashSet<TypeName>();
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}
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doMini = others.size() > 0;
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others.addAll(Arrays.asList(externalModel.getDescriptor().getParameters()));
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descr = Descriptor.findOrCreate(others.toArray(new TypeName[] {}), TypeReference.VoidName); // Return the intent of external? TODO
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} else {
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descr = Descriptor.findOrCreate(externalModel.getDescriptor().getParameters(), TypeReference.VoidName);
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}
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// selector = new Selector(name, descr);
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}
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/*{ // Skip construction if there already exists a model wit this name. This should
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// not happen.
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final AndroidModelClass mClass = AndroidModelClass.getInstance(this.cha);
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if (mClass.containsMethod(selector)) {
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this.built = true;
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this.model = (SummarizedMethod) mClass.getMethod(selector);
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return;
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}
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} // */
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{ // Set some properties of the later method
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this.klass = AndroidModelClass.getInstance(this.cha);
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this.mRef = MethodReference.findOrCreate(AndroidModelClass.ANDROID_MODEL_CLASS, name, descr);
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this.body = new VolatileMethodSummary(new MethodSummary(this.mRef));
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this.body.setStatic(true);
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}
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{ // Start building
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populate(null);
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this.model = new SummarizedMethod(this.mRef, this.body.getMethodSummary(), this.klass) {
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@Override
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public TypeReference getParameterType (int i) {
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IClassHierarchy cha = getClassHierarchy();
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TypeReference tRef = super.getParameterType(i);
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if (tRef.isClassType()) {
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if (cha.lookupClass(tRef) != null) {
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return tRef;
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} else {
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for (IClass c : cha) {
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if (c.getName().toString().equals(tRef.getName().toString())) {
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return c.getReference();
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}
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}
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}
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throw new IllegalStateException("Error looking up " + tRef);
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} else {
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return tRef;
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}
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}
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}; // of this.model
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}
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this.built = true;
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}
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/**
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* Fill the model with instructions.
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*
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* Call both models: ExternalModel, MiniModel
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*/
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//@Override
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private void populate(Iterable<? extends AndroidEntryPoint> entrypoints) throws CancelException {
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assert ((entrypoints == null) || (! entrypoints.iterator().hasNext()));
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assert (! built) : "You can only build once";
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final TypeSafeInstructionFactory instructionFactory = new TypeSafeInstructionFactory(this.cha);
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final ParameterAccessor pAcc = new ParameterAccessor(this.mRef, /* hasImplicitThis */ false);
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final SSAValueManager pm = new SSAValueManager(pAcc);
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final Instantiator instantiator = new Instantiator(this.body, instructionFactory, pm, this.cha, this.mRef, this.scope);
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if (doMini) { // Call a MiniModel
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//final MiniModel miniModel = new MiniModel(this.cha, this.options, this.cache, this.target);
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final IMethod mini = miniModel.getMethod();
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final ParameterAccessor miniAcc = new ParameterAccessor(mini);
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final List<SSAValue> params = pAcc.connectThrough(miniAcc, null, null, this.cha, instantiator, false, null, null);
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final SSAValue excpetion = pm.getException();
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final int pc = this.body.getNextProgramCounter();
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final CallSiteReference site = CallSiteReference.make(pc, mini.getReference(), IInvokeInstruction.Dispatch.STATIC);
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final SSAInstruction invokation = instructionFactory.InvokeInstruction(pc, params, excpetion, site);
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this.body.addStatement(invokation);
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}
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final SSAValue extRet;
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{ // Call the externalTarget Model
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//final ExternalModel externalModel = new ExternalModel(this.cha, this.options, this.cache, this.target);
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final IMethod external = externalModel.getMethod();
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final ParameterAccessor externalAcc = new ParameterAccessor(external);
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final List<SSAValue> params = pAcc.connectThrough(externalAcc, null, null, this.cha, instantiator, false, null, null);
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final SSAValue excpetion = pm.getException();
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extRet = pm.getUnmanaged(external.getReturnType() , "extRet");
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final int pc = this.body.getNextProgramCounter();
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final CallSiteReference site = CallSiteReference.make(pc, external.getReference(), IInvokeInstruction.Dispatch.STATIC);
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final SSAInstruction invokation = instructionFactory.InvokeInstruction(pc, extRet, params, excpetion, site);
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this.body.addStatement(invokation);
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}
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// TODO: Do somethig with extRet?
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this.body.setLocalNames(pm.makeLocalNames());
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}
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/*
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final ParameterAccessor internalAcc = new ParameterAccessor(this.allInternal.getMethod());
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final ParameterAccessor externalAcc = new ParameterAccessor(this.external.getMethod());
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final ParameterAccessor thisAcc = new ParameterAccessor(this.mRef, false);
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final SSAValueManager pm = new SSAValueManager(thisAcc);
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final JavaInstructionFactory instructionFactory = new JavaInstructionFactory(); // TODO: Use a typesafe factory?
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final Instantiator instantiator = new Instantiator(this.body, new TypeSafeInstructionFactory(getClassHierarchy()),
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pm, getClassHierarchy(), this.mRef, this.scope);
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int nextLocal = thisAcc.getFirstAfter(); // TODO: Use manager?
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final List<SSAValue> internalArgs;
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{ // Call the MiniModel
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// Map through the parameters of this.mRef to this.allInternal
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final List<SSAValue> args = thisAcc.connectThrough(internalAcc, null, null, getClassHierarchy(), instantiator, false,
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null, null);
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internalArgs = args;
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final IMethod allInternalMethod = this.allInternal.getMethod();
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{
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logger.debug("Calling {} using {}", this.allInternal.getMethod(), args);
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final int callPC = this.body.getNextProgramCounter();
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final CallSiteReference site = CallSiteReference.make(callPC, allInternalMethod.getReference(),
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IInvokeInstruction.Dispatch.STATIC);
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final int exception = nextLocal++;
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assert (exception > 0);
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final SSAInstruction invokation = instructionFactory.InvokeInstruction(callPC,
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internalAcc.forInvokeStatic(args), exception, site);
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this.body.addStatement(invokation);
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}
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}
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final int externalReturnIntent = nextLocal++;
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{ // Call the external model
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final List<SSAValue> args = thisAcc.connectThrough(externalAcc, null, null , getClassHierarchy(), instantiator,
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false, null, null);
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final IMethod externalMethod = this.external.getMethod();
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{
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final int callPC = this.body.getNextProgramCounter();
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final CallSiteReference site = CallSiteReference.make(callPC, externalMethod.getReference(),
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IInvokeInstruction.Dispatch.STATIC);
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final int exception = nextLocal++;
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final SSAInstruction invokation = instructionFactory.InvokeInstruction(callPC, externalReturnIntent,
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externalAcc.forInvokeStatic(args), exception, site);
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this.body.addStatement(invokation);
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}
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}
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// TODO: Phi-Together returnIntents and return it. Or at least handle external
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}*/
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}
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