/*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html.
*
* This file is a derivative of code released under the terms listed below.
*
*/
/**
*
* Copyright (c) 2009-2012,
*
* Galois, Inc. (Aaron Tomb <atomb@galois.com>,
* Rogan Creswick <creswick@galois.com>,
* Adam Foltzer <acfoltzer@galois.com>)
* Steve Suh <suhsteve@gmail.com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The names of the contributors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
*/
package org.scandroid.flow.functions;
import org.scandroid.domain.CodeElement;
import org.scandroid.domain.DomainElement;
import org.scandroid.domain.IFDSTaintDomain;
import org.scandroid.flow.types.FlowType;
import com.ibm.wala.dataflow.IFDS.IUnaryFlowFunction;
import com.ibm.wala.ssa.ISSABasicBlock;
import com.ibm.wala.util.intset.IntSet;
import com.ibm.wala.util.intset.MutableSparseIntSet;
public final class CallNoneToReturnFunction <E extends ISSABasicBlock> implements IUnaryFlowFunction {
private IFDSTaintDomain<E> domain;
public CallNoneToReturnFunction(IFDSTaintDomain<E> domain) {
this.domain = domain;
}
@Override
public IntSet getTargets(int d) {
if (0 == d) {
return TaintTransferFunctions.ZERO_SET;
}
MutableSparseIntSet set = MutableSparseIntSet.makeEmpty();
// TODO: this is questionable
// We don't know anything about the function called,
// so we have to make some assumptions. The safest assumption
// is that everything goes to everything:
// this effectively taints everything in the heap that we've seen before.
DomainElement de = domain.getMappedObject(d);
@SuppressWarnings("unchecked")
FlowType<E> taint = de.taintSource;
for (CodeElement ce : domain.codeElements() ){
int elt = domain.getMappedIndex(new DomainElement(ce, taint));
set.add(elt);
}
return set;
}
}