verigraph/service/src/mcnet/netobjs/PolitoErrFunction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2017 Politecnico di Torino and others.
   3  *
   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  *******************************************************************************/
   9
  10 package mcnet.netobjs;
  11
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  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;
  23
  24 import mcnet.components.NetContext;
  25 import mcnet.components.Network;
  26 import mcnet.components.NetworkObject;
  27 /**Error Function objects
  28  *
  29  */
  30 public class PolitoErrFunction extends NetworkObject{
  31
  32                 List<BoolExpr> constraints;
  33                 Context ctx;
  34                 DatatypeExpr politoErrFunction;
  35                 Network net;
  36                 NetContext nctx;
  37                 FuncDecl isInBlacklist;
  38
  39                 public PolitoErrFunction(Context ctx, Object[]... args) {
  40                         super(ctx, args);
  41                 }
  42
  43                 @Override
  44                 protected void init(Context ctx, Object[]... args) {
  45                         this.ctx = ctx;
  46                         isEndHost=true;
  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];
  52                 errFunctionRules();
  53                 //net.saneSend(this);
  54             }
  55
  56                 @Override
  57                 public DatatypeExpr getZ3Node() {
  58                         return politoErrFunction;
  59                 }
  60
  61                 @Override
  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));
  66                 }
  67
  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");
  72
  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));
  79 //
  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));
  83
  84
  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));
  90
  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));
  94
  95             }
  96         }