diff options
Diffstat (limited to 'verigraph/service/src/mcnet/netobjs/PolitoAntispam.java')
| -rw-r--r-- | verigraph/service/src/mcnet/netobjs/PolitoAntispam.java | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoAntispam.java b/verigraph/service/src/mcnet/netobjs/PolitoAntispam.java deleted file mode 100644 index abb4615..0000000 --- a/verigraph/service/src/mcnet/netobjs/PolitoAntispam.java +++ /dev/null @@ -1,124 +0,0 @@ -/******************************************************************************* - * 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; - -/** - * Model of an anti-spam node - * - */ -public class PolitoAntispam extends NetworkObject{ - - List<BoolExpr> constraints; - Context ctx; - DatatypeExpr politoAntispam; - Network net; - NetContext nctx; - FuncDecl isInBlacklist; - - public PolitoAntispam(Context ctx, Object[]... args) { - super(ctx, args); - } - - @Override - protected void init(Context ctx, Object[]... args) { - this.ctx = ctx; - isEndHost=false; - constraints = new ArrayList<BoolExpr>(); - z3Node = ((NetworkObject)args[0][0]).getZ3Node(); - politoAntispam = z3Node; - net = (Network)args[0][1]; - nctx = (NetContext)args[0][2]; - //net.saneSend(this); - } - - @Override - public DatatypeExpr getZ3Node() { - return politoAntispam; - } - - @Override - protected void addConstraints(Solver solver) { - BoolExpr[] constr = new BoolExpr[constraints.size()]; - solver.add(constraints.toArray(constr)); - } - - public void installAntispam (int[] blackList){ - Expr n_0 = ctx.mkConst(politoAntispam+"_n_0", nctx.node); - Expr n_1 = ctx.mkConst(politoAntispam+"_n_1", nctx.node); - Expr p_0 = ctx.mkConst(politoAntispam+"_p_0", nctx.packet); - IntExpr t_0 = ctx.mkIntConst(politoAntispam+"_t_0"); - IntExpr t_1 = ctx.mkIntConst(politoAntispam+"_t_1"); - IntExpr ef_0 = ctx.mkIntConst(politoAntispam+"_ef_0"); - - isInBlacklist = ctx.mkFuncDecl(politoAntispam+"_isInBlacklist", ctx.mkIntSort(), ctx.mkBoolSort()); - BoolExpr[] blConstraint = new BoolExpr[blackList.length]; - if(blackList.length != 0){ - for (int i=0;i<blackList.length;i++) - blConstraint[i]=(ctx.mkEq(ef_0,ctx.mkInt(blackList[i]))); - //Constraint1a if(isInBlackList(ef_0) == or(for bl in blacklist (ef_0==bl)) ? true : false - constraints.add(ctx.mkForall(new Expr[]{ef_0}, ctx.mkIff((BoolExpr)isInBlacklist.apply(ef_0),ctx.mkOr(blConstraint)),1,null,null,null,null)); - }else{ - //Constraint1b isInblackList(ef_0) == false - constraints.add(ctx.mkForall(new Expr[]{ef_0}, ctx.mkEq((BoolExpr)isInBlacklist.apply(ef_0), ctx.mkBool(false)),1,null,null,null,null)); - } - - //Constraint2 send(politoAntispam, n_0, p, t_0) && p.proto(POP3_RESP) -> - // (exist n_1,t_1 : (recv(n_1, politoAntispam, p, t_1) && t_1 < t_0)) && !isInBlackList(p.emailFrom) - constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, - ctx.mkImplies(ctx.mkAnd((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0), ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_RESPONSE))), - ctx.mkAnd( ctx.mkExists(new Expr[]{n_1, t_1}, - ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoAntispam, p_0, t_1), ctx.mkLt(t_1 , t_0)),1,null,null,null,null), - ctx.mkNot((BoolExpr)isInBlacklist.apply(nctx.pf.get("emailFrom").apply(p_0))))),1,null,null,null,null)); - - //Constraint3 send(politoAntispam, n_0, p, t_0) && p.proto(POP3_REQ) -> - // (exist n_1,t_1 : (recv(n_1, politoAntispam, p, t_1) && t_1 < t_0)) - constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, - ctx.mkImplies(ctx.mkAnd((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0), ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_REQUEST))), - ctx.mkAnd(ctx.mkExists(new Expr[]{n_1, t_1}, - ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoAntispam, p_0, t_1), - ctx.mkLt(t_1 , t_0)),1,null,null,null,null))),1,null,null,null,null)); - - //Constraint4 send(politoAntispam, politoErrFunction, p, t_0) -> - // (exist n_1,t_1 : (recv(n_1, politoAntispam, p, t_1) && t_1 < t_0 && p.emailFrom ==1)) - constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, - ctx.mkImplies((BoolExpr)nctx.send.apply(politoAntispam, nctx.nm.get("politoErrFunction").getZ3Node(), p_0, t_0), - ctx.mkAnd(ctx.mkExists(new Expr[]{n_1, t_1}, - ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoAntispam, p_0, t_1), - ctx.mkLt(t_1 , t_0), - ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0),ctx.mkInt(1))),1,null,null,null,null))),1,null,null,null,null)); - - //Constraint5 send(politoAntispam, n_0, p, t_0) -> p.proto == POP_REQ || p.protpo == POP_RESP - constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, - ctx.mkImplies((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0), - ctx.mkOr( ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_REQUEST)), - ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_RESPONSE)))),1,null,null,null,null)); - - //Constraint6 send(politoAntispam, n_0, p, t_0) -> nodeHasAddr(politoAntispam,p.src) - constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0}, - ctx.mkImplies((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0), - ctx.mkNot((BoolExpr)nctx.nodeHasAddr.apply(politoAntispam,nctx.pf.get("src").apply(p_0)))),1,null,null,null,null)); - } - }
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