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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
* Copyright (C) 2010 TigerVNC Team
* Copyright (C) 2011-2015 Brian P. Hinz
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
//
// SecTypes.java - constants for the various security types.
//
package com.tigervnc.rfb;
import java.util.*;
public class Security {
public static final int secTypeInvalid = 0;
public static final int secTypeNone = 1;
public static final int secTypeVncAuth = 2;
public static final int secTypeRA2 = 5;
public static final int secTypeRA2ne = 6;
public static final int secTypeSSPI = 7;
public static final int secTypeSSPIne = 8;
public static final int secTypeTight = 16;
public static final int secTypeUltra = 17;
public static final int secTypeTLS = 18;
public static final int secTypeVeNCrypt = 19;
/* VeNCrypt subtypes */
public static final int secTypePlain = 256;
public static final int secTypeTLSNone = 257;
public static final int secTypeTLSVnc = 258;
public static final int secTypeTLSPlain = 259;
public static final int secTypeX509None = 260;
public static final int secTypeX509Vnc = 261;
public static final int secTypeX509Plain = 262;
public static final int secTypeIdent = 265;
public static final int secTypeTLSIdent = 266;
public static final int secTypeX509Ident = 267;
// result types
public static final int secResultOK = 0;
public static final int secResultFailed = 1;
public static final int secResultTooMany = 2; // deprecated
public Security() { }
public Security(StringParameter secTypes)
{
String secTypesStr;
secTypesStr = secTypes.getData();
enabledSecTypes = parseSecTypes(secTypesStr);
secTypesStr = null;
}
private List<Integer> enabledSecTypes = new ArrayList<Integer>();
public final List<Integer> GetEnabledSecTypes()
{
List<Integer> result = new ArrayList<Integer>();
/* Partial workaround for Vino's stupid behaviour. It doesn't allow
* the basic authentication types as part of the VeNCrypt handshake,
* making it impossible for a client to do opportunistic encryption.
* At least make it possible to connect when encryption is explicitly
* disabled. */
for (Iterator<Integer> i = enabledSecTypes.iterator(); i.hasNext(); ) {
int refType = (Integer)i.next();
if (refType >= 0x100) {
result.add(secTypeVeNCrypt);
break;
}
}
for (Iterator<Integer> i = enabledSecTypes.iterator(); i.hasNext(); ) {
int refType = (Integer)i.next();
if (refType < 0x100)
result.add(refType);
}
return (result);
}
public final List<Integer> GetEnabledExtSecTypes()
{
List<Integer> result = new ArrayList<Integer>();
for (Iterator<Integer> i = enabledSecTypes.iterator(); i.hasNext(); ) {
int refType = (Integer)i.next();
if (refType != secTypeVeNCrypt) /* Do not include VeNCrypt to avoid loops */
result.add(refType);
}
return (result);
}
public final void EnableSecType(int secType)
{
for (Iterator<Integer> i = enabledSecTypes.iterator(); i.hasNext(); )
if ((Integer)i.next() == secType)
return;
enabledSecTypes.add(secType);
}
public boolean IsSupported(int secType)
{
Iterator<Integer> i;
for (i = enabledSecTypes.iterator(); i.hasNext(); )
if ((Integer)i.next() == secType)
return true;
if (secType == secTypeVeNCrypt)
return true;
return false;
}
public String ToString()
{
Iterator<Integer> i;
String out = new String("");
boolean firstpass = true;
String name;
for (i = enabledSecTypes.iterator(); i.hasNext(); ) {
name = secTypeName((Integer)i.next());
if (name.startsWith("[")) /* Unknown security type */
continue;
if (!firstpass)
out = out.concat(",");
else
firstpass = false;
out = out.concat(name);
}
return out;
}
public void DisableSecType(int secType) { enabledSecTypes.remove((Object)secType); }
public static int secTypeNum(String name) {
if (name.equalsIgnoreCase("None")) return secTypeNone;
if (name.equalsIgnoreCase("VncAuth")) return secTypeVncAuth;
if (name.equalsIgnoreCase("Tight")) return secTypeTight;
if (name.equalsIgnoreCase("RA2")) return secTypeRA2;
if (name.equalsIgnoreCase("RA2ne")) return secTypeRA2ne;
if (name.equalsIgnoreCase("SSPI")) return secTypeSSPI;
if (name.equalsIgnoreCase("SSPIne")) return secTypeSSPIne;
//if (name.equalsIgnoreCase("ultra")) return secTypeUltra;
//if (name.equalsIgnoreCase("TLS")) return secTypeTLS;
if (name.equalsIgnoreCase("VeNCrypt")) return secTypeVeNCrypt;
/* VeNCrypt subtypes */
if (name.equalsIgnoreCase("Plain")) return secTypePlain;
if (name.equalsIgnoreCase("Ident")) return secTypeIdent;
if (name.equalsIgnoreCase("TLSNone")) return secTypeTLSNone;
if (name.equalsIgnoreCase("TLSVnc")) return secTypeTLSVnc;
if (name.equalsIgnoreCase("TLSPlain")) return secTypeTLSPlain;
if (name.equalsIgnoreCase("TLSIdent")) return secTypeTLSIdent;
if (name.equalsIgnoreCase("X509None")) return secTypeX509None;
if (name.equalsIgnoreCase("X509Vnc")) return secTypeX509Vnc;
if (name.equalsIgnoreCase("X509Plain")) return secTypeX509Plain;
if (name.equalsIgnoreCase("X509Ident")) return secTypeX509Ident;
return secTypeInvalid;
}
public static String secTypeName(int num) {
switch (num) {
case secTypeNone: return "None";
case secTypeVncAuth: return "VncAuth";
case secTypeTight: return "Tight";
case secTypeRA2: return "RA2";
case secTypeRA2ne: return "RA2ne";
case secTypeSSPI: return "SSPI";
case secTypeSSPIne: return "SSPIne";
//case secTypeUltra: return "Ultra";
//case secTypeTLS: return "TLS";
case secTypeVeNCrypt: return "VeNCrypt";
/* VeNCrypt subtypes */
case secTypePlain: return "Plain";
case secTypeIdent: return "Ident";
case secTypeTLSNone: return "TLSNone";
case secTypeTLSVnc: return "TLSVnc";
case secTypeTLSPlain: return "TLSPlain";
case secTypeTLSIdent: return "TLSIdent";
case secTypeX509None: return "X509None";
case secTypeX509Vnc: return "X509Vnc";
case secTypeX509Plain: return "X509Plain";
case secTypeX509Ident: return "X509Ident";
default: return "[unknown secType]";
}
}
public final static List<Integer> parseSecTypes(String types_)
{
List<Integer> result = new ArrayList<Integer>();
String[] types = types_.split(",");
for (int i = 0; i < types.length; i++) {
int typeNum = secTypeNum(types[i]);
if (typeNum != secTypeInvalid)
result.add(typeNum);
}
return (result);
}
public final void SetSecTypes(List<Integer> secTypes) {
enabledSecTypes = secTypes;
}
static LogWriter vlog = new LogWriter("Security");
}
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