158 lines
5.5 KiB
Java
158 lines
5.5 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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*
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* Copyright (c) 2009-2012,
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*
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* Galois, Inc. (Aaron Tomb <atomb@galois.com>,
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* Rogan Creswick <creswick@galois.com>,
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* Adam Foltzer <acfoltzer@galois.com>)
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* Steve Suh <suhsteve@gmail.com>
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*
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* All rights reserved.
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*
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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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*
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*/
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package org.scandroid.spec;
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import java.util.Map;
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import java.util.Set;
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import org.scandroid.domain.CodeElement;
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import org.scandroid.domain.InstanceKeyElement;
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import org.scandroid.domain.StaticFieldElement;
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import org.scandroid.flow.InflowAnalysis;
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import org.scandroid.flow.types.FlowType;
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import org.scandroid.flow.types.StaticFieldFlow;
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import org.scandroid.util.CGAnalysisContext;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IField;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.dataflow.IFDS.ISupergraph;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.CallGraph;
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import com.ibm.wala.ipa.callgraph.propagation.ConcreteTypeKey;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
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import com.ibm.wala.ipa.callgraph.propagation.PointerAnalysis;
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import com.ibm.wala.ipa.callgraph.propagation.PointerKey;
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import com.ibm.wala.ipa.cfg.BasicBlockInContext;
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import com.ibm.wala.ipa.cha.IClassHierarchy;
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import com.ibm.wala.ssa.ISSABasicBlock;
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import com.ibm.wala.ssa.SSAInvokeInstruction;
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import com.ibm.wala.types.TypeReference;
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import com.ibm.wala.util.collections.HashSetFactory;
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import com.ibm.wala.util.intset.OrdinalSet;
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/**
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* @author creswick
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*
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*/
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public class StaticFieldSourceSpec extends SourceSpec {
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private final IField field;
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public StaticFieldSourceSpec(IField field) {
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this.field = field;
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argNums = null;
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}
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/* (non-Javadoc)
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* @see org.scandroid.spec.SourceSpec#addDomainElements(java.util.Map, com.ibm.wala.classLoader.IMethod, com.ibm.wala.ipa.cfg.BasicBlockInContext, com.ibm.wala.ssa.SSAInvokeInstruction, int[], com.ibm.wala.dataflow.IFDS.ISupergraph, com.ibm.wala.ipa.callgraph.propagation.PointerAnalysis, com.ibm.wala.ipa.callgraph.CallGraph)
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*/
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@Override
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public <E extends ISSABasicBlock> void addDomainElements(
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CGAnalysisContext<E> ctx,
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Map<BasicBlockInContext<E>, Map<FlowType<E>, Set<CodeElement>>> taintMap,
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IMethod im,
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BasicBlockInContext<E> block,
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SSAInvokeInstruction invInst,
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int[] newArgNums,
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ISupergraph<BasicBlockInContext<E>, CGNode> graph,
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PointerAnalysis<InstanceKey> pa,
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CallGraph cg) {
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Set<CodeElement> valueElements = HashSetFactory.make();
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valueElements.add(new StaticFieldElement(field.getReference()));
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FlowType<E> flow = new StaticFieldFlow<E>(block, field, true);
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TypeReference typeRef = field.getFieldTypeReference();
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if (typeRef.isPrimitiveType()) {
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InflowAnalysis.addDomainElements(taintMap, block, flow, valueElements);
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return;
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}
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// else, handle reference types:
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PointerKey pk = pa.getHeapModel().getPointerKeyForStaticField(field);
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OrdinalSet<InstanceKey> pointsToSet = pa.getPointsToSet(pk);
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if (pointsToSet.isEmpty()) {
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IClassHierarchy cha = im.getClassHierarchy();
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if (null == cha.lookupClass(typeRef)) {
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return;
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}
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if (cha.isInterface(typeRef)) {
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// TODO we could find all implementations of the interface, and add a concrete type key for each.
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// we aren't doing that yet.
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InflowAnalysis.addDomainElements(taintMap, block, flow, valueElements);
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return;
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}
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IClass clazz = cha.lookupClass(typeRef);
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if (null == clazz) {
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} else {
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InstanceKey ik = new ConcreteTypeKey(clazz);
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valueElements.add(new InstanceKeyElement(ik));
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}
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}
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for (InstanceKey ik : pointsToSet) {
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valueElements.add(new InstanceKeyElement(ik));
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}
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InflowAnalysis.addDomainElements(taintMap, block, flow, valueElements);
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}
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@Override
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public String toString() {
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return "StaticFieldSourceSpec [field=" + field + "]";
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}
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}
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