x509name.java

这是linux下ssl vpn的实现程序

/*
 *  SSL-Explorer
 *
 *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
 *
 *  This program 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 program 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 program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
			
package com.maverick.crypto.asn1.x509;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;

import com.maverick.crypto.asn1.*;

public class X509Name
    implements DEREncodable
{
    /**
     * country code - StringType(SIZE(2))
     */
    public static final DERObjectIdentifier C = new DERObjectIdentifier("2.5.4.6");

    /**
     * organization - StringType(SIZE(1..64))
     */
    public static final DERObjectIdentifier O = new DERObjectIdentifier("2.5.4.10");

    /**
     * organizational unit name - StringType(SIZE(1..64))
     */
    public static final DERObjectIdentifier OU = new DERObjectIdentifier("2.5.4.11");

    /**
     * Title
     */
    public static final DERObjectIdentifier T = new DERObjectIdentifier("2.5.4.12");

    /**
     * common name - StringType(SIZE(1..64))
     */
    public static final DERObjectIdentifier CN = new DERObjectIdentifier("2.5.4.3");

    /**
     * device serial number name - StringType(SIZE(1..64))
     */
    public static final DERObjectIdentifier SN = new DERObjectIdentifier("2.5.4.5");

    /**
     * locality name - StringType(SIZE(1..64))
     */
    public static final DERObjectIdentifier L = new DERObjectIdentifier("2.5.4.7");

    /**
     * state, or province name - StringType(SIZE(1..64))
     */
    public static final DERObjectIdentifier ST = new DERObjectIdentifier("2.5.4.8");

    /**
     * Naming attributes of type X520name
     */
    public static final DERObjectIdentifier SURNAME = new DERObjectIdentifier("2.5.4.4");
    public static final DERObjectIdentifier GIVENNAME = new DERObjectIdentifier("2.5.4.42");
    public static final DERObjectIdentifier INITIALS = new DERObjectIdentifier("2.5.4.43");
    public static final DERObjectIdentifier GENERATION = new DERObjectIdentifier("2.5.4.44");
	public static final DERObjectIdentifier UNIQUE_IDENTIFIER = new DERObjectIdentifier("2.5.4.45");

    /**
     * Email address (RSA PKCS#9 extension) - IA5String.
     * <p>Note: if you're trying to be ultra orthodox, don't use this! It shouldn't be in here.
     */
    public static final DERObjectIdentifier EmailAddress = new DERObjectIdentifier("1.2.840.113549.1.9.1");

	/**
	 * email address in Verisign certificates
	 */
	public static final DERObjectIdentifier E = EmailAddress;

    /*
     * others...
     */
    public static final DERObjectIdentifier DC = new DERObjectIdentifier("0.9.2342.19200300.100.1.25");

    /**
     * LDAP User id.
     */
    public static final DERObjectIdentifier UID = new DERObjectIdentifier("0.9.2342.19200300.100.1.1");

    /**
     * look up table translating OID values into their common symbols - this static is scheduled for deletion
     */
    public static Hashtable OIDLookUp = new Hashtable();

    /**
     * determines whether or not strings should be processed and printed
     * from back to front.
     */
    public static boolean DefaultReverse = false;

    /**
     * default look up table translating OID values into their common symbols following
     * the convention in RFC 2253 with a few extras
     */
    public static Hashtable DefaultSymbols = OIDLookUp;

    /**
     * look up table translating OID values into their common symbols following the convention in RFC 2253
     * with a few extras
     */
    public static Hashtable RFC2253Symbols = new Hashtable();

    /**
     * look up table translating string values into their OIDS -
     * this static is scheduled for deletion
     */
    public static Hashtable SymbolLookUp = new Hashtable();

    /**
     * look up table translating common symbols into their OIDS.
     */
    public static Hashtable DefaultLookUp = SymbolLookUp;

    static
    {
        DefaultSymbols.put(C, "C");
        DefaultSymbols.put(O, "O");
        DefaultSymbols.put(T, "T");
        DefaultSymbols.put(OU, "OU");
        DefaultSymbols.put(CN, "CN");
        DefaultSymbols.put(L, "L");
        DefaultSymbols.put(ST, "ST");
        DefaultSymbols.put(SN, "SN");
        DefaultSymbols.put(EmailAddress, "E");
        DefaultSymbols.put(DC, "DC");
        DefaultSymbols.put(UID, "UID");
        DefaultSymbols.put(SURNAME, "SURNAME");
        DefaultSymbols.put(GIVENNAME, "GIVENNAME");
        DefaultSymbols.put(INITIALS, "INITIALS");
        DefaultSymbols.put(GENERATION, "GENERATION");

        RFC2253Symbols.put(C, "C");
        RFC2253Symbols.put(O, "O");
        RFC2253Symbols.put(T, "T");
        RFC2253Symbols.put(OU, "OU");
        RFC2253Symbols.put(CN, "CN");
        RFC2253Symbols.put(L, "L");
        RFC2253Symbols.put(ST, "ST");
        RFC2253Symbols.put(SN, "SN");
        RFC2253Symbols.put(EmailAddress, "EMAILADDRESS");
        RFC2253Symbols.put(DC, "DC");
        RFC2253Symbols.put(UID, "UID");
        RFC2253Symbols.put(SURNAME, "SURNAME");
        RFC2253Symbols.put(GIVENNAME, "GIVENNAME");
        RFC2253Symbols.put(INITIALS, "INITIALS");
        RFC2253Symbols.put(GENERATION, "GENERATION");

        DefaultLookUp.put("c", C);
        DefaultLookUp.put("o", O);
        DefaultLookUp.put("t", T);
        DefaultLookUp.put("ou", OU);
        DefaultLookUp.put("cn", CN);
        DefaultLookUp.put("l", L);
        DefaultLookUp.put("st", ST);
        DefaultLookUp.put("sn", SN);
        DefaultLookUp.put("emailaddress", E);
        DefaultLookUp.put("dc", DC);
        DefaultLookUp.put("e", E);
        DefaultLookUp.put("uid", UID);
        DefaultLookUp.put("surname", SURNAME);
        DefaultLookUp.put("givenname", GIVENNAME);
        DefaultLookUp.put("initials", INITIALS);
        DefaultLookUp.put("generation", GENERATION);
    }

    private Vector                  ordering = new Vector();
    private Vector                  values = new Vector();
	private Vector                  added = new Vector();

    private ASN1Sequence            seq;

    public static X509Name getInstance(
        ASN1TaggedObject obj,
        boolean          explicit)
    {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }

    public static X509Name getInstance(
        Object  obj)
    {
        if (obj == null || obj instanceof X509Name)
        {
            return (X509Name)obj;
        }
        else if (obj instanceof ASN1Sequence)
        {
            return new X509Name((ASN1Sequence)obj);
        }

        throw new IllegalArgumentException("unknown object in factory");
    }

    /**
     * Constructor from ASN1Sequence
     *
     * the principal will be a list of constructed sets, each containing an (OID, String) pair.
     */
    public X509Name(
        ASN1Sequence  seq)
    {
        this.seq = seq;

        Enumeration e = seq.getObjects();

        while (e.hasMoreElements())
        {
            ASN1Set         set = (ASN1Set)e.nextElement();

			for (int i = 0; i < set.size(); i++)
			{
				   ASN1Sequence s = (ASN1Sequence)set.getObjectAt(i);

				   ordering.addElement(s.getObjectAt(0));
				   values.addElement(((DERString) s.getObjectAt(1)).getString());
				   added.addElement((i != 0) ? new Boolean(true) : new Boolean(false));
			}
        }
    }

    /**
     * constructor from a table of attributes.
     * <p>
     * it's is assumed the table contains OID/String pairs, and the contents
     * of the table are copied into an internal table as part of the
     * construction process.
     * <p>
     * <b>Note:</b> if the name you are trying to generate should be
     * following a specific ordering, you should use the constructor
     * with the ordering specified below.
     */
    public X509Name(
        Hashtable  attributes)
    {
        this(null, attributes);
    }

    /**
     * Constructor from a table of attributes with ordering.
     * <p>
     * it's is assumed the table contains OID/String pairs, and the contents
     * of the table are copied into an internal table as part of the
     * construction process. The ordering vector should contain the OIDs
     * in the order they are meant to be encoded or printed in toString.
     */
    public X509Name(
        Vector      ordering,
        Hashtable   attributes)
    {
        if (ordering != null)
        {
            for (int i = 0; i != ordering.size(); i++)
            {
                this.ordering.addElement(ordering.elementAt(i));
                this.added.addElement(new Boolean(false));
            }
        }
        else
        {
            Enumeration     e = attributes.keys();

            while (e.hasMoreElements())
            {
                this.ordering.addElement(e.nextElement());
				this.added.addElement(new Boolean(false));
            }
        }

        for (int i = 0; i != this.ordering.size(); i++)
        {
            DERObjectIdentifier     oid = (DERObjectIdentifier)this.ordering.elementAt(i);

            if (attributes.get(oid) == null)
            {
                throw new IllegalArgumentException("No attribute for object id - " + oid.getId() + " - passed to distinguished name");
            }

            this.values.addElement(attributes.get(oid)); // copy the hash table
        }
    }

    /**
     * Takes two vectors one of the oids and the other of the values.
     */
    public X509Name(
        Vector  oids,
        Vector  values)
    {
        if (oids.size() != values.size())
        {
            throw new IllegalArgumentException("oids vector must be same length as values.");
        }

        for (int i = 0; i < oids.size(); i++)
        {
            this.ordering.addElement(oids.elementAt(i));
            this.values.addElement(values.elementAt(i));
			this.added.addElement(new Boolean(false));
        }
    }

    /**
     * Takes an X509 dir name as a string of the format "C=AU, ST=Victoria", or
     * some such, converting it into an ordered set of name attributes.
     */
    public X509Name(
        String  dirName)
    {
        this(DefaultReverse, DefaultLookUp, dirName);
    }

    /**
     * Takes an X509 dir name as a string of the format "C=AU, ST=Victoria", or
     * some such, converting it into an ordered set of name attributes. If reverse
     * is true, create the encoded version of the sequence starting from the
     * last element in the string.
     */
    public X509Name(
        boolean reverse,
        String  dirName)
    {
        this(reverse, DefaultLookUp, dirName);
    }

    /**
     * Takes an X509 dir name as a string of the format "C=AU, ST=Victoria", or
     * some such, converting it into an ordered set of name attributes. lookUp
     * should provide a table of lookups, indexed by lowercase only strings and
     * yielding a DERObjectIdentifier, other than that OID. and numeric oids
     * will be processed automatically.
     * <br>
     * If reverse is true, create the encoded version of the sequence
     * starting from the last element in the string.
     * @param reverse true if we should start scanning from the end (RFC 2553).
     * @param lookUp table of names and their oids.
     * @param dirName the X.500 string to be parsed.
     */
    public X509Name(
        boolean     reverse,
        Hashtable   lookUp,
        String      dirName)
    {
        X509NameTokenizer   nTok = new X509NameTokenizer(dirName);

        while (nTok.hasMoreTokens())
        {
            String  token = nTok.nextToken();
            int     index = token.indexOf('=');

            if (index == -1)
            {
                throw new IllegalArgumentException("badly formated directory string");
            }

            String              name = token.substring(0, index);
            String              value = token.substring(index + 1);
            DERObjectIdentifier oid = null;

            if (name.toUpperCase().startsWith("OID."))
            {
                oid = new DERObjectIdentifier(name.substring(4));
            }
            else if (name.charAt(0) >= '0' && name.charAt(0) <= '9')
            {
                oid = new DERObjectIdentifier(name);
            }
            else
            {
                oid = (DERObjectIdentifier)lookUp.get(name.toLowerCase());
                if (oid == null)
                {
                    throw new IllegalArgumentException("Unknown object id - " + name + " - passed to distinguished name");
                }
            }

            this.ordering.addElement(oid);
            this.values.addElement(value);
            this.added.addElement(new Boolean(false));
        }

        if (reverse)
        {
            Vector  o = new Vector();
            Vector  v = new Vector();

            for (int i = this.ordering.size() - 1; i >= 0; i--)
            {
                o.addElement(this.ordering.elementAt(i));
                v.addElement(this.values.elementAt(i));
				this.added.addElement(new Boolean(false));
            }

            this.ordering = o;
            this.values = v;
        }
    }

    /**
     * return a vector of the oids in the name, in the order they were found.
     */
    public Vector getOIDs()
    {
        Vector  v = new Vector();

        for (int i = 0; i != ordering.size(); i++)
        {
            v.addElement(ordering.elementAt(i));
        }

        return v;
    }

    /**
     * return a vector of the values found in the name, in the order they
     * were found.
     */
    public Vector getValues()
    {
        Vector  v = new Vector();

        for (int i = 0; i != values.size(); i++)
        {
            v.addElement(values.elementAt(i));
        }

        return v;