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/*******************************************************************************
* Copyright (c) 2017 Politecnico di Torino and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution, and is available at
* http://www.apache.org/licenses/LICENSE-2.0
*******************************************************************************/
package mcnet.netobjs;
import java.util.ArrayList;
import java.util.List;
import com.microsoft.z3.BoolExpr;
import com.microsoft.z3.Context;
import com.microsoft.z3.DatatypeExpr;
import com.microsoft.z3.Expr;
import com.microsoft.z3.IntExpr;
import com.microsoft.z3.Solver;
import mcnet.components.NetContext;
import mcnet.components.Network;
import mcnet.components.NetworkObject;
public class PolitoFieldModifier extends NetworkObject {
List<BoolExpr> constraints;
Context ctx;
DatatypeExpr politoFieldModifier;
Network net;
NetContext nctx;
public PolitoFieldModifier(Context ctx, Object[]... args) {
super(ctx, args);
}
@Override
public DatatypeExpr getZ3Node() {
return politoFieldModifier;
}
@Override
protected void init(Context ctx, Object[]... args) {
this.ctx = ctx;
isEndHost=false;
constraints = new ArrayList<BoolExpr>();
z3Node = ((NetworkObject)args[0][0]).getZ3Node();
politoFieldModifier = z3Node;
net = (Network)args[0][1];
nctx = (NetContext)args[0][2];
}
@Override
protected void addConstraints(Solver solver) {
BoolExpr[] constr = new BoolExpr[constraints.size()];
solver.add(constraints.toArray(constr));
}
public void installFieldModifier (){
Expr x = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_x", nctx.node);
Expr y = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_y", nctx.node);
Expr p_0 = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_p_0", nctx.packet);
Expr p_1 = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_p_1", nctx.packet);
IntExpr t_0 = ctx.mkIntConst("politoFieldModifier_"+politoFieldModifier+"_t_0");
IntExpr t_1 = ctx.mkIntConst("politoFieldModifier_"+politoFieldModifier+"_t_1");
constraints.add(
ctx.mkForall(new Expr[]{t_0, p_0, x},
ctx.mkImplies((BoolExpr)nctx.send.apply(politoFieldModifier,x,p_0,t_0),
ctx.mkExists(new Expr[]{y, p_1, t_1},
ctx.mkAnd(ctx.mkLt(t_1, t_0),
(BoolExpr)nctx.recv.apply(y, politoFieldModifier, p_1, t_1),
ctx.mkEq(nctx.pf.get("encrypted").apply(p_0), nctx.pf.get("encrypted").apply(p_1)),
ctx.mkEq(nctx.pf.get("src").apply(p_0), nctx.pf.get("src").apply(p_1)),
ctx.mkEq(nctx.pf.get("dest").apply(p_0), nctx.pf.get("dest").apply(p_1)),
ctx.mkEq(nctx.pf.get("inner_src").apply(p_0), nctx.pf.get("inner_src").apply(p_1)),
ctx.mkEq(nctx.pf.get("inner_dest").apply(p_0), nctx.pf.get("inner_dest").apply(p_1)),
ctx.mkEq(nctx.pf.get("origin").apply(p_0), nctx.pf.get("origin").apply(p_1)),
ctx.mkEq(nctx.pf.get("orig_body").apply(p_0), nctx.pf.get("orig_body").apply(p_1)),
ctx.mkEq(nctx.pf.get("body").apply(p_0), nctx.pf.get("body").apply(p_1)),
ctx.mkEq(nctx.pf.get("seq").apply(p_0), nctx.pf.get("seq").apply(p_1)),
ctx.mkEq(nctx.pf.get("proto").apply(p_0), nctx.pf.get("proto").apply(p_1)),
ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0), nctx.pf.get("emailFrom").apply(p_1)),
ctx.mkNot(ctx.mkEq(nctx.pf.get("url").apply(p_0), nctx.pf.get("url").apply(p_1))),
ctx.mkEq(nctx.pf.get("options").apply(p_0), nctx.pf.get("options").apply(p_1))),1,null,null,null,null)),
1,null,null,null,null));
}
}
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