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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.FuncDecl;
import com.microsoft.z3.IntExpr;
import com.microsoft.z3.Solver;
import mcnet.components.NetContext;
import mcnet.components.Network;
import mcnet.components.NetworkObject;
/**
* MailClient objects
*
*/
public class PolitoMailClient extends NetworkObject{
List<BoolExpr> constraints;
Context ctx;
DatatypeExpr politoMailClient;
Network net;
NetContext nctx;
FuncDecl isInBlacklist;
public PolitoMailClient(Context ctx, Object[]... args) {
super(ctx, args);
}
@Override
protected void init(Context ctx, Object[]... args) {
this.ctx = ctx;
isEndHost=true;
constraints = new ArrayList<BoolExpr>();
z3Node = ((NetworkObject)args[0][0]).getZ3Node();
politoMailClient = z3Node;
net = (Network)args[0][1];
nctx = (NetContext)args[0][2];
DatatypeExpr ipServer = (DatatypeExpr) args[0][3];
mailClientRules(ipServer);
//net.saneSend(this);
}
@Override
public DatatypeExpr getZ3Node() {
return politoMailClient;
}
@Override
protected void addConstraints(Solver solver) {
// System.out.println("[MailClient] Installing rules.");
BoolExpr[] constr = new BoolExpr[constraints.size()];
solver.add(constraints.toArray(constr));
}
private void mailClientRules (DatatypeExpr ipServer){
Expr n_0 = ctx.mkConst("PolitoMailClient_"+politoMailClient+"_n_0", nctx.node);
Expr p_0 = ctx.mkConst("PolitoMailClient_"+politoMailClient+"_p_0", nctx.packet);
IntExpr t_0 = ctx.mkIntConst("PolitoMailClient_"+politoMailClient+"_t_0");
// Constraint1 send(politoMailClient, n_0, p, t_0) -> nodeHasAddr(politoMailClient,p.src)
constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
(BoolExpr)nctx.nodeHasAddr.apply(politoMailClient,nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
// Constraint2 send(politoMailClient, n_0, p, t_0) -> p.origin == politoMailClient
constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
ctx.mkEq(nctx.pf.get("origin").apply(p_0),politoMailClient)),1,null,null,null,null));
// Constraint3 send(politoMailClient, n_0, p, t_0) -> p.orig_body == p.body
constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
// Constraint4 recv(n_0, politoMailClient, p, t_0) -> nodeHasAddr(politoMailClient,p.dest)
constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,politoMailClient, p_0, t_0),
(BoolExpr)nctx.nodeHasAddr.apply(politoMailClient,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
// Constraint5 This client is only able to produce POP3 requests
// send(politoMailClient, n_0, p, t_0) -> p.proto == POP3_REQ
constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_REQUEST))),1,null,null,null,null));
// Constraint6 send(politoMailClient, n_0, p, t_0) -> p.dest == ip_mailServer
constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
ctx.mkEq(nctx.pf.get("dest").apply(p_0), ipServer)),1,null,null,null,null));
}
}
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