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// --- BEGIN COPYRIGHT BLOCK ---
// 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; version 2 of the License.
//
// 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cms.authentication;
import com.netscape.certsrv.base.*;
import com.netscape.certsrv.ldap.*;
import com.netscape.certsrv.authentication.*;
import com.netscape.certsrv.publish.*;
import netscape.ldap.*;
import java.io.*;
import java.util.*;
/**
* class for parsing a DN pattern used to construct a certificate
* subject name from ldap attributes and dn.<p>
*
* dnpattern is a string representing a subject name pattern to formulate from
* the directory attributes and entry dn. If empty or not set, the
* ldap entry DN will be used as the certificate subject name. <p>
*
* The syntax is
* <pre>
* dnPattern := rdnPattern *[ "," rdnPattern ]
* rdnPattern := avaPattern *[ "+" avaPattern ]
* avaPattern := name "=" value |
* name "=" "$attr" "." attrName [ "." attrNumber ] |
* name "=" "$dn" "." attrName [ "." attrNumber ] |
* "$dn" "." "$rdn" "." number
* </pre>
* <pre>
* Example1: <i>E=$attr.mail.1, CN=$attr.cn, OU=$dn.ou.2, O=$dn.o, C=US </i>
* Ldap entry: dn: UID=jjames, OU=IS, OU=people, O=acme.org
* Ldap attributes: cn: Jesse James
* Ldap attributes: mail: jjames@acme.org
* <p>
* The subject name formulated will be : <br>
* E=jjames@acme.org, CN=Jesse James, OU=people, O=acme.org, C=US
* <p>
* E = the first 'mail' ldap attribute value in user's entry. <br>
* CN = the (first) 'cn' ldap attribute value in the user's entry. <br>
* OU = the second 'ou' value in the user's entry DN. <br>
* O = the (first) 'o' value in the user's entry DN. <br>
* C = the string "US"
* <p>
* Example2: <i>E=$attr.mail.1, CN=$attr.cn, OU=$dn.ou.2, O=$dn.o, C=US</i>
* Ldap entry: dn: UID=jjames, OU=IS+OU=people, O=acme.org
* Ldap attributes: cn: Jesse James
* Ldap attributes: mail: jjames@acme.org
* <p>
* The subject name formulated will be : <br>
* E=jjames@acme.org, CN=Jesse James, OU=people, O=acme.org, C=US
* <p>
* E = the first 'mail' ldap attribute value in user's entry. <br>
* CN = the (first) 'cn' ldap attribute value in the user's entry. <br>
* OU = the second 'ou' value in the user's entry DN. note multiple AVAs
* in a RDN in this example. <br>
* O = the (first) 'o' value in the user's entry DN. <br>
* C = the string "US"
* <p>
* </pre>
* <pre>
* Example3: <i>CN=$attr.cn, $rdn.2, O=$dn.o, C=US</i>
* Ldap entry: dn: UID=jjames, OU=IS+OU=people, O=acme.org
* Ldap attributes: cn: Jesse James
* Ldap attributes: mail: jjames@acme.org
* <p>
* The subject name formulated will be : <br>
* CN=Jesse James, OU=IS+OU=people, O=acme.org, C=US
* <p>
* CN = the (first) 'cn' ldap attribute value in the user's entry. <br>
* followed by the second RDN in the user's entry DN. <br>
* O = the (first) 'o' value in the user's entry DN. <br>
* C = the string "US"
* <p>
* Example4: <i>CN=$attr.cn, OU=$dn.ou.2+OU=$dn.ou.1, O=$dn.o, C=US</i>
* Ldap entry: dn: UID=jjames, OU=IS+OU=people, O=acme.org
* Ldap attributes: cn: Jesse James
* Ldap attributes: mail: jjames@acme.org
* <p>
* The subject name formulated will be : <br>
* CN=Jesse James, OU=people+OU=IS, O=acme.org, C=US
* <p>
* CN = the (first) 'cn' ldap attribute value in the user's entry. <br>
* OU = the second 'ou' value in the user's entry DN followed by the
* first 'ou' value in the user's entry. note multiple AVAs
* in a RDN in this example. <br>
* O = the (first) 'o' value in the user's entry DN. <br>
* C = the string "US"
* <p>
* </pre>
* If an attribute or subject DN component does not exist the attribute
* is skipped.
*
* @version $Revision$, $Date$
*/
public class DNPattern {
/* ldap attributes to retrieve */
private String[] mLdapAttrs = null;
/* rdn patterns */
protected RDNPattern[] mRDNPatterns = null;
/* original pattern string */
protected String mPatternString = null;
protected String mTestDN = null;
/**
* Construct a DN pattern by parsing a pattern string.
* @param pattern the DN pattern
* @exception EBaseException If parsing error occurs.
*/
public DNPattern(String pattern)
throws EAuthException {
if (pattern == null || pattern.equals("")) {
// create an attribute list that is the dn.
mLdapAttrs = new String[] { "dn" };
} else {
mPatternString = pattern;
PushbackReader in = new PushbackReader(new StringReader(pattern));
parse(in);
}
}
public DNPattern(PushbackReader in)
throws EAuthException {
parse(in);
}
private void parse(PushbackReader in)
throws EAuthException {
Vector rdnPatterns = new Vector();
RDNPattern rdnPattern = null;
int lastChar = -1;
do {
rdnPattern = new RDNPattern(in);
rdnPatterns.addElement(rdnPattern);
try {
lastChar = in.read();
} catch (IOException e) {
throw new EAuthException("CMS_AUTHENTICATION_INTERNAL_ERROR", e.toString());
}
}
while (lastChar == ',');
mRDNPatterns = new RDNPattern[rdnPatterns.size()];
rdnPatterns.copyInto(mRDNPatterns);
Vector ldapAttrs = new Vector();
for (int i = 0; i < mRDNPatterns.length; i++) {
String[] rdnAttrs = mRDNPatterns[i].getLdapAttrs();
if (rdnAttrs != null && rdnAttrs.length > 0)
for (int j = 0; j < rdnAttrs.length; j++)
ldapAttrs.addElement(rdnAttrs[j]);
}
mLdapAttrs = new String[ldapAttrs.size()];
ldapAttrs.copyInto(mLdapAttrs);
}
/**
* Form a Ldap v3 DN string from results of a ldap search.
* @param entry LDAPentry from a ldap search
* @return Ldap v3 DN string to use for a subject name.
*/
public String formDN(LDAPEntry entry)
throws EAuthException {
StringBuffer formedDN = new StringBuffer();
for (int i = 0; i < mRDNPatterns.length; i++) {
if (mTestDN != null)
mRDNPatterns[i].mTestDN = mTestDN;
String rdn = mRDNPatterns[i].formRDN(entry);
if (rdn != null) {
if (rdn != null && rdn.length() != 0) {
if (formedDN.length() != 0)
formedDN.append(",");
formedDN.append(rdn);
}
}
}
//System.out.println("formed DN "+formedDN.toString());
return formedDN.toString();
}
public String[] getLdapAttrs() {
return (String[]) mLdapAttrs.clone();
}
}
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