verigraph/service/src/mcnet/netobjs/PolitoWebClient.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
  28 /**
  29  * WebClient
  30  */
  31 public class PolitoWebClient extends NetworkObject{
  32
  33                 List<BoolExpr> constraints;
  34                 Context ctx;
  35                 DatatypeExpr politoWebClient;
  36                 Network net;
  37                 NetContext nctx;
  38                 FuncDecl isInBlacklist;
  39
  40                 public PolitoWebClient(Context ctx, Object[]... args) {
  41                         super(ctx, args);
  42                 }
  43
  44                 @Override
  45                 protected void init(Context ctx, Object[]... args) {
  46                         this.ctx = ctx;
  47                     isEndHost=true;
  48                         constraints = new ArrayList<BoolExpr>();
  49                         z3Node = ((NetworkObject)args[0][0]).getZ3Node();
  50                         politoWebClient = z3Node;
  51                         net = (Network)args[0][1];
  52                         nctx = (NetContext)args[0][2];
  53                         DatatypeExpr ipServer = (DatatypeExpr) args[0][3];
  54                         webClientRules(ipServer);
  55                         //net.saneSend(this);
  56             }
  57
  58                 @Override
  59                 public DatatypeExpr getZ3Node() {
  60                         return politoWebClient;
  61                 }
  62
  63                 @Override
  64                 protected void addConstraints(Solver solver) {
  65 //                      System.out.println("[MailClient] Installing rules.");
  66                         BoolExpr[] constr = new BoolExpr[constraints.size()];
  67                         solver.add(constraints.toArray(constr));
  68                 }
  69
  70             private void webClientRules (DatatypeExpr ipServer){
  71                 Expr n_0 = ctx.mkConst("PolitoWebClient_"+politoWebClient+"_n_0", nctx.node);
  72                 Expr p_0 = ctx.mkConst("PolitoWebClient_"+politoWebClient+"_p_0", nctx.packet);
  73                 IntExpr t_0 = ctx.mkIntConst("PolitoWebClient_"+politoWebClient+"_t_0");
  74
  75                 //Constraint1           send(politoWebClient, n_0, p, t_0) -> nodeHasAddr(politoWebClient,p.src)
  76                         constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
  77                     ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
  78                                 (BoolExpr)nctx.nodeHasAddr.apply(politoWebClient,nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
  79
  80                         //Constraint2           send(politoWebClient, n_0, p, t_0) -> p.origin == politoWebClient
  81                         constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
  82                     ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
  83                                 ctx.mkEq(nctx.pf.get("origin").apply(p_0),politoWebClient)),1,null,null,null,null));
  84
  85                         //Constraint3           send(politoWebClient, n_0, p, t_0) -> p.orig_body == p.body
  86                         constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
  87                     ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
  88                                 ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
  89
  90                         //Constraint4           recv(n_0, politoWebClient, p, t_0) -> nodeHasAddr(politoWebClient,p.dest)
  91                         constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
  92                     ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,politoWebClient, p_0, t_0),
  93                                 (BoolExpr)nctx.nodeHasAddr.apply(politoWebClient,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
  94
  95
  96                         //Constraint5           This client is only able to produce HTTP requests
  97                         //                                      send(politoWebClient, n_0, p, t_0) -> p.proto == HTTP_REQ
  98             constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
  99                     ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
 100                         ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_REQUEST))),1,null,null,null,null));
 101
 102             //Constraint6               send(politoWebClient, n_0, p, t_0) -> p.dest == ipServer
 103             constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
 104                     ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
 105                             ctx.mkEq(nctx.pf.get("dest").apply(p_0), ipServer)),1,null,null,null,null));
 106             }
 107         }