1 /*******************************************************************************
2 * Copyright (c) 2017 Politecnico di Torino and others.
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Apache License, Version 2.0
6 * which accompanies this distribution, and is available at
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *******************************************************************************/
10 package mcnet.netobjs;
13 import java.util.ArrayList;
14 import java.util.List;
16 import com.microsoft.z3.BoolExpr;
17 import com.microsoft.z3.Context;
18 import com.microsoft.z3.DatatypeExpr;
19 import com.microsoft.z3.Expr;
20 import com.microsoft.z3.FuncDecl;
21 import com.microsoft.z3.IntExpr;
22 import com.microsoft.z3.Solver;
24 import mcnet.components.NetContext;
25 import mcnet.components.Network;
26 import mcnet.components.NetworkObject;
27 /**Error Function objects
30 public class PolitoErrFunction extends NetworkObject{
32 List<BoolExpr> constraints;
34 DatatypeExpr politoErrFunction;
37 FuncDecl isInBlacklist;
39 public PolitoErrFunction(Context ctx, Object[]... args) {
44 protected void init(Context ctx, Object[]... args) {
47 constraints = new ArrayList<BoolExpr>();
48 z3Node = ((NetworkObject)args[0][0]).getZ3Node();
49 politoErrFunction = z3Node;
50 net = (Network)args[0][1];
51 nctx = (NetContext)args[0][2];
57 public DatatypeExpr getZ3Node() {
58 return politoErrFunction;
62 protected void addConstraints(Solver solver) {
63 // System.out.println("[ERR FUNC] Installing rules.");
64 BoolExpr[] constr = new BoolExpr[constraints.size()];
65 solver.add(constraints.toArray(constr));
68 private void errFunctionRules (){
69 Expr n_0 = ctx.mkConst("PolitoErrFunction_"+politoErrFunction+"_n_0", nctx.node);
70 Expr p_0 = ctx.mkConst("PolitoErrFunction_"+politoErrFunction+"_p_0", nctx.packet);
71 IntExpr t_0 = ctx.mkIntConst("PolitoErrFunction_"+politoErrFunction+"_t_0");
73 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
74 // ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
75 // (BoolExpr)nctx.nodeHasAddr.apply(politoErrFunction, nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
76 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
77 // ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
78 // ctx.mkEq(nctx.pf.get("origin").apply(p_0), politoErrFunction)),1,null,null,null,null));
80 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
81 // ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
82 // ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
85 // Constraint1 We want the ErrFunction not to send out any packet
86 // send(politoErrFunction, n_0, p, t_0) -> 1 == 2
87 constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
88 ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
89 ctx.mkEq(ctx.mkInt(1),ctx.mkInt(2))),1,null,null,null,null));
91 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
92 // ctx.mkImplies( (BoolExpr)nctx.send.apply(n_0, politoErrFunction, p_0, t_0),
93 // (BoolExpr)nctx.nodeHasAddr.apply(politoErrFunction, nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));