diff options
Diffstat (limited to 'verigraph/src/it/polito/verigraph/mcnet/netobjs/PolitoFieldModifier.java')
| -rw-r--r-- | verigraph/src/it/polito/verigraph/mcnet/netobjs/PolitoFieldModifier.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/verigraph/src/it/polito/verigraph/mcnet/netobjs/PolitoFieldModifier.java b/verigraph/src/it/polito/verigraph/mcnet/netobjs/PolitoFieldModifier.java new file mode 100644 index 0000000..38b842b --- /dev/null +++ b/verigraph/src/it/polito/verigraph/mcnet/netobjs/PolitoFieldModifier.java @@ -0,0 +1,89 @@ +/******************************************************************************* + * 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 it.polito.verigraph.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 it.polito.verigraph.mcnet.components.NetContext; +import it.polito.verigraph.mcnet.components.Network; +import it.polito.verigraph.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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