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package com.sun.enterprise.iiop.security;
/**
* GSSUPToken class creates a mechanism specific gssapi token for
* the username, password mechanism
* @author Sekhar Vajjhala
*/
import java.io.IOException;
import org.omg.CORBA.*;
import org.omg.PortableInterceptor.*;
import org.omg.IOP.*;
import java.util.*;
/* Import CSIV2 idl generated classes */
import com.sun.corba.ee.org.omg.CSI.*;
import com.sun.corba.ee.org.omg.GSSUP.*;
import com.sun.corba.ee.org.omg.CSIIOP.*;
import com.sun.enterprise.iiop.security.GSSUtils;
import com.sun.enterprise.security.auth.login.PasswordCredential;
import java.util.logging.*;
import com.sun.logging.*;
/**
* GSSUPToken Represents the on the wire username/password credential on the
* client side and the server side.
* @author Sekhar Vajjhala
* @author Harpreet Singh
*/
public class GSSUPToken {
private static java.util.logging.Logger _logger=null;
static{
_logger=LogDomains.getLogger(LogDomains.CORBA_LOGGER);
}
//START OF IASRI 4825735.
// to allow for usernames of the type user@foobar.com
// Will be represented as user\\@foobar.com@domain
public static final String DELIMITER_REGEXP = "\\@";
// backslash for regexp is denoted as \\
public static final String ESCAPE_CHAR_REGEXP = "\\\\\\@";
public static final String ESCAPE_CHAR = "\\";
//START OF IASRI 4825735
public static final String DELIMITER = "@" ;
public static final String DEFAULT_REALM_NAME = "default";
/**
* cdr_encoded_token is the GSSAPI mechanism specific token
* for the user, password mechanism. The mechanism specific
* token is stored in the CDR encoded form.
*/
private byte[] cdr_encoded_token = {} ;
/* PasswordCredential that contains the username, password and realm */
PasswordCredential pwdcred = null;
/**
* Constructs mechanism token from a password credential, called from
* the client side interceptors
* @param orb the ORB
* @param codec the codec for translation
* @param pwdcred the Password credential, populated with username/password
* and the realm name
* @return GSSUPToken instance of the GSSUPToken class.
* @since 1.4
*/
public static GSSUPToken getClientSideInstance(ORB orb, Codec codec,
PasswordCredential pwdcred){
return new GSSUPToken(orb, codec, pwdcred);
}
/**
* Creates a GSSUPToken instance on the server side
* @param orb the orb
* @param codec the codec
* @param authok the authtoken received on the wire.
* @throws SecurityMechanismException if a name/value pair is not found in
* the authtok
* @since 1.4
*/
public static GSSUPToken getServerSideInstance(ORB orb, Codec codec,
byte[] authtok) throws SecurityMechanismException{
return new GSSUPToken(orb, codec, authtok);
}
/**
* Constructor used to construct a mechansim token from a
* PasswordCredential. This is used by a context initiator.
* This is called on the Client Side
*/
private GSSUPToken(ORB orb, Codec codec, PasswordCredential pwdcred)
{
byte[] name_utf8 = {}; // username in UTF8 format
byte[] password_utf8 = {}; // password in UTF8 format
if(_logger.isLoggable(Level.FINE)){
_logger.log(Level.FINE,"IIOP: Going to construct a GSSUPToken:");
_logger.log(Level.FINE, pwdcred.toString());
}
try {
String _name_ = new String(pwdcred.getUser());
// if username is of type user@sun.com, realm - foo
// do the following
// create user\\@sun.com
// if username is already of the type user\\@foo, dont do anything
int index = _name_.indexOf(DELIMITER);
if(index == -1){
// no @ - ignore
}else{ // check if it is already escaped
int escaped_index = _name_.indexOf(ESCAPE_CHAR);
if(escaped_index == -1){ // delimiter not escaped, escape it
_name_ = _name_.replaceAll(DELIMITER_REGEXP, ESCAPE_CHAR_REGEXP);
}else{ // some are escaped, some may be not
// rather than traversing the string and escaping
// some that are not escaped
// just remove the escape on all escaped delimiters
// and then re-escape them
_name_ = _name_.replaceAll(ESCAPE_CHAR_REGEXP, DELIMITER_REGEXP);
_name_ = _name_.replaceAll(DELIMITER_REGEXP, ESCAPE_CHAR_REGEXP);
}
}
String realm = pwdcred.getRealm();
// concatenation of name+realm
if(realm != null){
// cannot use StringBuffer, as StringBuffer eats away a \
_name_ = _name_ + DELIMITER + realm;
}
name_utf8 = _name_.toString().getBytes("UTF8");
password_utf8 = pwdcred.getPassword().getBytes("UTF8");
} catch (Exception e) {
_logger.log(Level.SEVERE,"iiop.password_exception",e);
}
/* Get the target name from the IOR. The IOR is stored in the
* ConnectionContext object
*/
SecurityMechanismSelector sms = new SecurityMechanismSelector();
ConnectionContext cc = sms.getClientConnectionContext();
CompoundSecMech mech = cc.getMechanism();
byte[] target_name = mech.as_context_mech.target_name;
if(_logger.isLoggable(Level.FINE)){
_logger.fine("Username (UTF8) " + GSSUtils.dumpHex(name_utf8));
_logger.fine("Password (UTF8) " + GSSUtils.dumpHex(password_utf8));
_logger.fine("Targetname " + GSSUtils.dumpHex(target_name));
}
/* Create an InitialContextToken */
InitialContextToken inctxToken =
new InitialContextToken(name_utf8, password_utf8, target_name);
/* Generate a CDR encoding */
Any a = orb.create_any();
InitialContextTokenHelper.insert(a, inctxToken);
try {
cdr_encoded_token = codec.encode_value(a);
} catch (Exception e) {
_logger.log(Level.SEVERE,"iiop.encode_exception",e);
}
if(_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE,"IIOP:Mech specific token length (CDR encoded) = " + cdr_encoded_token.length);
}
}
/* Constructor used to construct a mechansim token from a CDR encoded
* mechanism specific token. This is used by a context acceptor.
* This is called on the server side.
*/
private GSSUPToken(ORB orb, Codec codec, byte[] authtok)
throws SecurityMechanismException
{
byte[] name_utf8 = {}; // username in UTF8 format
byte[] password_utf8 = {}; // password in UTF8 format
byte[] target_name = {} ; // target name
String username = "";
String userpwd = "";
String realm = "";
byte[] encoded_token = {} ;
if(_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "IIOP:Going to construct a GSSUPToken:");
_logger.log(Level.FINE, "IIOP:Getting CDR encoded GSSUP mechanism token from client authentication token");
}
/* get CDR encoded mechanism specific token */
encoded_token = GSSUtils.getMechToken(GSSUtils.GSSUP_MECH_OID, authtok);
/* create a GSSUPToken from the authentication token */
if(_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE,"CDR encoded mech specific token length = "+ encoded_token.length);
}
/* Decode the cdr encoded token */
Any a = orb.create_any();
try {
a = codec.decode_value(encoded_token, InitialContextTokenHelper.type());
} catch (Exception e) {
_logger.log(Level.SEVERE,"iiop.decode_exception",e);
}
InitialContextToken inctxToken = InitialContextTokenHelper.extract(a);
/* get UTF8 encodings from initial context token */
password_utf8 = inctxToken.password;
name_utf8 = inctxToken.username;
target_name = inctxToken.target_name;
if(_logger.isLoggable(Level.FINE)){
_logger.fine("IIOP:Username (UTF8) " + GSSUtils.dumpHex(name_utf8));
_logger.fine("IIOP:Password (UTF8) " + GSSUtils.dumpHex(password_utf8));
_logger.fine("IIOP:Targetname " + GSSUtils.dumpHex(target_name));
}
/* Construct a PasswordCredential */
try {
username = new String(name_utf8, "UTF8");
userpwd = new String(password_utf8, "UTF8");
} catch (Exception e) {
_logger.log(Level.SEVERE,"iiop.user_password_exception",e);
}
/**
* decode the username and realm as specified by CSIV2
*/
String name;
int index = username.indexOf(DELIMITER);
int esc_index = username.indexOf(ESCAPE_CHAR);
if ( index == -1 ) {
name = username;
}
else if ( index == 0 || esc_index == 0) {
// username is of the form "@realm" or
// \\@realm or starts with a escape character
throw new SecurityMechanismException("No name_value in username");
} else if (esc_index != -1){
// START IASRI 4825735 - Changed from 7.0 UR1 to take
// care of realm-per-app features
// username\\@sun.com@realm type
if (esc_index+2 >= username.length()){
// string ends at username\\@ - nothing follows
name = username.replaceAll(ESCAPE_CHAR_REGEXP, DELIMITER);
if(_logger.isLoggable(Level.FINE)){
_logger.log(Level.FINE, "IIOP:No Realm specified, "+
" creating a default realm for login");
}
realm = DEFAULT_REALM_NAME;
}else {
// locate the second @ token
// index+2 starts from the first @ sign and thus
// returns the index of the first @ sign
// index +3 skips this @ and gives the index of second @
int second_at_index = username.indexOf(DELIMITER, esc_index+3);
if (second_at_index == -1){
// user\\@foobar.com - no realm specified
name = username.replaceAll(ESCAPE_CHAR_REGEXP, DELIMITER);
if(_logger.isLoggable(Level.FINE)){
_logger.log(Level.FINE, "IIOP:No Realm specified, "+
" creating a default realm for login");
}
realm = DEFAULT_REALM_NAME;
}else {
name = username.substring(0, second_at_index);
name = name.replaceAll(ESCAPE_CHAR_REGEXP, DELIMITER);
realm = username.substring(second_at_index+1);
if(realm == null){
// user\\@foo.com@ type
if(_logger.isLoggable(Level.FINE)){
_logger.log(Level.FINE, "IIOP:No Realm specified, "+
" creating a default realm for login");
}
realm = DEFAULT_REALM_NAME;
}
}
}
// End IASRI 4825735 - Changed from 7.0 UR1
} else {
// parse the name and realm tokens
StringTokenizer strtok = new StringTokenizer(username, DELIMITER);
name = strtok.nextToken();
// this checking is neccessary if the username="name@"
if ( strtok.hasMoreTokens() ) {
realm = strtok.nextToken();
// for realm-per-app
// if ( !realm.equals("default") )
// throw new SecurityMechanismException("Unknown realm");
if(realm == null){
if(_logger.isLoggable(Level.FINE)){
_logger.log(Level.FINE, "IIOP:No Realm specified, "+
" creating a default realm for login");
}
realm = DEFAULT_REALM_NAME;
}
}
}
pwdcred = new PasswordCredential(name, userpwd, realm, target_name);
if(_logger.isLoggable(Level.FINE)){
_logger.log(Level.FINE, pwdcred.toString());
}
}
/**
* Returns the GSSToken for the GSSUPToken name that conforms to
* the GSSUP Mechanism id
* @return byte[] the byte array representation of the GSSToken
*/
byte[] getGSSToken() throws IOException
{
if(_logger.isLoggable(Level.FINER)){
_logger.log(Level.FINER, "IIOP:GSSUP mech token : " + GSSUtils.dumpHex(cdr_encoded_token));
}
/* construct a GSSAPI token ( hdr + mechanism token ) */
byte[] gsstoken = GSSUtils.createMechIndToken(GSSUtils.GSSUP_MECH_OID, cdr_encoded_token);
if(_logger.isLoggable(Level.FINER)){
_logger.log(Level.FINER, "IIOP:GSSUP token length : " + gsstoken.length);
_logger.log(Level.FINER, "IIOP:GSSUP token: " + GSSUtils.dumpHex(gsstoken));
}
return gsstoken;
}
/**
* @return PasswordCredential the PasswordCredential object that has the
* username and password. This is called from the server side interceptor
*/
PasswordCredential getPwdcred()
{
return pwdcred;
}
}
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