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ABCPolicy.java
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179 lines (155 loc) · 5.09 KB
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package guideforce.policy;
import guideforce.interproc.CallingContext;
import guideforce.interproc.Location;
import guideforce.policy.automata.Automaton;
import guideforce.policy.automata.AutomatonAbstractDomain;
import guideforce.regions.AllocationSiteRegion;
import guideforce.regions.Region;
import guideforce.regions.SpecialRegion;
import guideforce.types.Monad;
import soot.SootMethodRef;
import soot.VoidType;
import soot.jimple.AnyNewExpr;
import soot.jimple.StringConstant;
import javax.annotation.Nonnull;
import java.util.List;
public class ABCPolicy implements Policy {
private final AutomatonAbstractDomain abstractDomain;
public ABCPolicy() {
Automaton a = new Automaton();
a.addAlphabetSymbol(Token.A);
a.addAlphabetSymbol(Token.B);
a.addAlphabetSymbol(Token.C);
a.addState("s0");
a.addState("sa");
a.addState("saa");
a.addState("sab");
a.addState("sac");
a.addState("sb");
a.addState("sba");
a.addState("sbb");
a.addState("sbc");
a.addState("sc");
a.addState("sca");
a.addState("scb");
a.addState("scc");
a.addState("saaa");
a.addState("sbbb");
a.addState("sccc");
a.addState("s1");
a.addEdge("s0", "sa", Token.A);
a.addEdge("s0", "sb", Token.B);
a.addEdge("s0", "sc", Token.C);
a.addEdge("sa", "saa", Token.A);
a.addEdge("sa", "sab", Token.B);
a.addEdge("sa", "sac", Token.C);
a.addEdge("sb", "sba", Token.A);
a.addEdge("sb", "sbb", Token.B);
a.addEdge("sb", "sbc", Token.C);
a.addEdge("sc", "sca", Token.A);
a.addEdge("sc", "scb", Token.B);
a.addEdge("sc", "scc", Token.C);
a.addEdge("saa", "saaa", Token.A);
a.addEdge("saa", "s1", Token.B);
a.addEdge("saa", "s1", Token.C);
a.addEdge("sab", "s1", Token.A);
a.addEdge("sab", "s1", Token.B);
a.addEdge("sab", "s1", Token.C);
a.addEdge("sac", "s1", Token.A);
a.addEdge("sac", "s1", Token.B);
a.addEdge("sac", "s1", Token.C);
a.addEdge("sba", "s1", Token.A);
a.addEdge("sba", "s1", Token.B);
a.addEdge("sba", "s1", Token.C);
a.addEdge("sbb", "s1", Token.A);
a.addEdge("sbb", "sbbb", Token.B);
a.addEdge("sbb", "s1", Token.C);
a.addEdge("sbc", "s1", Token.A);
a.addEdge("sbc", "s1", Token.B);
a.addEdge("sbc", "s1", Token.C);
a.addEdge("sca", "s1", Token.A);
a.addEdge("sca", "s1", Token.B);
a.addEdge("sca", "s1", Token.C);
a.addEdge("scb", "s1", Token.A);
a.addEdge("scb", "s1", Token.B);
a.addEdge("scb", "s1", Token.C);
a.addEdge("scc", "s1", Token.A);
a.addEdge("scc", "s1", Token.B);
a.addEdge("scc", "sccc", Token.C);
a.addEdge("saaa", "saaa" , Token.A);
a.addEdge("saaa", "s1" , Token.B);
a.addEdge("saaa", "s1" , Token.C);
a.addEdge("sbbb", "s1" , Token.A);
a.addEdge("sbbb", "sbbb" , Token.B);
a.addEdge("sbbb", "s1" , Token.C);
a.addEdge("sccc", "s1" , Token.A);
a.addEdge("sccc", "s1" , Token.B);
a.addEdge("sccc", "sccc" , Token.C);
a.addEdge("s1", "s1", Token.A);
a.addEdge("s1", "s1", Token.B);
a.addEdge("s1", "s1", Token.C);
a.setInitialState("s0");
a.addFinalState("s0");
a.addFinalState("sa");
a.addFinalState("saa");
a.addFinalState("sab");
a.addFinalState("sac");
a.addFinalState("sb");
a.addFinalState("sba");
a.addFinalState("sbb");
a.addFinalState("sbc");
a.addFinalState("sc");
a.addFinalState("sca");
a.addFinalState("scb");
a.addFinalState("scc");
a.addFinalState("saaa");
a.addFinalState("sbbb");
a.addFinalState("sccc");
a.addFinalState("s1");
this.abstractDomain = new AutomatonAbstractDomain(a);
}
@Override
public AbstractDomain getAbstractDomain() {
return this.abstractDomain;
}
@Override
public Region getRegion(CallingContext ctx, Location location, StringConstant v) {
return new AllocationSiteRegion(v, ctx, location);
}
@Override
public Region getRegion(CallingContext ctx, Location location, AnyNewExpr v) {
return new AllocationSiteRegion(v, ctx, location);
}
@Override
public Intrinsic getIntrinsicMethod(SootMethodRef method) {
switch (method.getSignature()) {
case "<ourlib.nonapp.TaintAPI: void emitA()>":
return emitIntrinsic(method, Token.A);
case "<ourlib.nonapp.TaintAPI: void emitB()>":
return emitIntrinsic(method, Token.B);
case "<ourlib.nonapp.TaintAPI: void emitC()>":
return emitIntrinsic(method, Token.C);
default:
return null;
}
}
private Intrinsic emitIntrinsic(SootMethodRef method, Token token) {
return new Intrinsic() {
@Nonnull
@Override
public Monad<Region> getReturnType(Region region, List<Region> argumentTypes) {
assert method.getReturnType().equals(VoidType.v());
return Monad.pure(abstractDomain, (Region)SpecialRegion.BASETYPE_REGION)
.then(abstractDomain.makeFinitary(abstractDomain.read(token)));
}
@Nonnull
@Override
public Monad<Region> getExceptionalType(Region region, List<Region> argumentTypes) {
return Monad.empty(abstractDomain);
}
};
}
public enum Token {
A, B, C
}
}