diff options
Diffstat (limited to 'verigraph/service/src/mcnet/netobjs/PolitoWebServer.java')
| -rw-r--r-- | verigraph/service/src/mcnet/netobjs/PolitoWebServer.java | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoWebServer.java b/verigraph/service/src/mcnet/netobjs/PolitoWebServer.java new file mode 100644 index 0000000..54710d9 --- /dev/null +++ b/verigraph/service/src/mcnet/netobjs/PolitoWebServer.java @@ -0,0 +1,114 @@ +/******************************************************************************* + * 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; +/** + * WebServer object + * + */ +public class PolitoWebServer extends NetworkObject{ + + List<BoolExpr> constraints; + Context ctx; + DatatypeExpr node; + Network net; + NetContext nctx; + FuncDecl isInBlacklist; + + public PolitoWebServer(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(); + node = z3Node; + net = (Network)args[0][1]; + nctx = (NetContext)args[0][2]; + webServerRules(); + } + + @Override + public DatatypeExpr getZ3Node() { + return node; + } + + @Override + protected void addConstraints(Solver solver) { + BoolExpr[] constr = new BoolExpr[constraints.size()]; + solver.add(constraints.toArray(constr)); + } + + private void webServerRules (){ + Expr n_0 = ctx.mkConst("webserver_"+node+"_n_0", nctx.node); + Expr p_0 = ctx.mkConst("webserver_"+node+"_p_0", nctx.packet); + Expr p_1 = ctx.mkConst("webserver_"+node+"_p_1", nctx.packet); + IntExpr t_0 = ctx.mkIntConst("webserver_"+node+"_t_0"); + IntExpr t_1 = ctx.mkIntConst("webserver_"+node+"_t_1"); + + //Constraint1 send(politoWebServer, n_0, p, t_0) -> nodeHasAddr(politoWebServer,p.src) + constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, + ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0), + (BoolExpr)nctx.nodeHasAddr.apply(node,nctx.pf.get("src").apply(p_0))),1,null,null,null,null)); + + //Constraint2 send(politoWebServer, n_0, p, t_0) -> p.origin == politoWebServer + constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, + ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0), + ctx.mkEq(nctx.pf.get("origin").apply(p_0),node)),1,null,null,null,null)); + + //Constraint3 send(politoWebServer, 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(node, 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, politoWebServer, p, t_0) -> nodeHasAddr(politoWebServer,p.dest) + constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, + ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,node, p_0, t_0), + (BoolExpr)nctx.nodeHasAddr.apply(node,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null)); + + //Constraint5 + // send(politoWebServer, n_0, p, t_0) -> + // (exist p_1,t_1 : + // (t_1 < t_0 && recv(n_0, politoWebServer, p_1, t_1) && + // p_0.proto == HTTP_RESP && p_1.proto == HTTP_REQ && + // p_0.dest == p_1.src && p_0.src == p_1.dest && p_0.url == p_1.url) + constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, + ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0), + ctx.mkExists(new Expr[]{p_1, t_1}, + ctx.mkAnd( + ctx.mkLt(t_1, t_0), + ctx.mkEq(nctx.pf.get("url").apply(p_0), nctx.pf.get("url").apply(p_1)), + (BoolExpr)nctx.recv.apply(n_0, node, p_1, t_1), + ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_RESPONSE)), + ctx.mkEq(nctx.pf.get("proto").apply(p_1), ctx.mkInt(nctx.HTTP_REQUEST)), + ctx.mkEq(nctx.pf.get("dest").apply(p_0), nctx.pf.get("src").apply(p_1)), + ctx.mkEq(nctx.pf.get("src").apply(p_0), nctx.pf.get("dest").apply(p_1))), + 1,null,null,null,null)),1,null,null,null,null)); + } +} |