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/*
 * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

/*
 * $Id: PasswordValidationCallback.java,v 1.2 2010-10-21 15:37:24 snajper Exp $
 */

package com.sun.xml.wss.impl.callback;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;

import javax.security.auth.callback.*;

import com.sun.xml.wss.impl.misc.Base64;
import org.apache.xml.security.exceptions.Base64DecodingException;
import com.sun.xml.wss.RealmAuthenticationAdapter;

/**
 * This Callback is intended for Username-Password validation.
 * A validator that implements the PasswordValidator interface 
 * should be set on the callback by the callback handler.
 *
 * 

Note: A validator for WSS Digested Username-Password is provided * as part of this callback. * * @author XWS-Security Team */ public class PasswordValidationCallback extends XWSSCallback implements Callback { private Request request; private boolean result = false; private PasswordValidator validator; private RealmAuthenticationAdapter authenticator = null; public PasswordValidationCallback(Request request) { this.request = request; } public boolean getResult() { try { if (validator != null) result = validator.validate(request); }catch (ClassCastException e){ throw e; }catch (Exception e) { return false; } return result; } public Request getRequest() { return request; } /** * This method must be invoked by the CallbackHandler while handling * this callback. */ public void setValidator(PasswordValidator validator) { this.validator = validator; if (this.validator instanceof ValidatorExtension) { ((ValidatorExtension)this.validator).setRuntimeProperties(this.getRuntimeProperties()); } } public PasswordValidator getValidator() { return this.validator; } public void setRealmAuthentcationAdapter(RealmAuthenticationAdapter adapter) { this.authenticator = adapter; } public RealmAuthenticationAdapter getRealmAuthenticationAdapter() { return this.authenticator; } public static interface Request { } /** * Represents a validation request when the password in the username token * is in plain text. */ public static class PlainTextPasswordRequest implements Request { private String password; private String userName; /** * Constructor. * * @param userName java.lang.String representation of User name. * @param password java.lang.String representation of password. */ public PlainTextPasswordRequest(String userName, String password) { this.password = password; this.userName = userName; } /** * Get the username stored in this Request. * * @return java.lang.String representation of username. */ public String getUsername() { return userName; } /** * Get the password stored in the Request. * * @return java.lang.String representation of password. */ public String getPassword() { return password; } } /** * Represents a validation request when the password in the username token * is in digested form. */ public static class DigestPasswordRequest implements Request { private String password; private String userName; private String digest; private String nonce; private String created; /** * Constructor. * * @param userName java.lang.String representing Username. * @param digest java.lang.String Base64 encoded form of Digested Password. * @param nonce java.lang.String representation of unique Nonce * used for calculating Digested password. * @param created java.security.String representation of created time * used for password digest calculation. * */ public DigestPasswordRequest( String userName, String digest, String nonce, String created) { this.userName = userName; this.digest = digest; this.nonce = nonce; this.created = created; } /** * This method must be invoked by the CallbackHandler while handling * Callback initialized with DigestPasswordRequest. */ public void setPassword(String password) { this.password = password; } public String getPassword() { return password; } public String getUsername() { return userName; } public String getDigest() { return digest; } public String getNonce() { return nonce; } public String getCreated() { return created; } } public static class DerivedKeyPasswordRequest implements Request { private String userName; private String password; private String created; public DerivedKeyPasswordRequest( String userName //String created ) { this.userName = userName; //this.created = created; } public void setPassword(String password){ this.password = password; } public String getPassword() { return password; } public String getUsername() { return userName; } public void setUsername(String name){ this.userName = name; } public String getCreated() { return created; } } /** * Interface for validating password. */ public static interface PasswordValidator { /** * @param request PasswordValidationRequest * @return true if password validation succeeds else false */ public boolean validate(Request request) throws PasswordValidationException; } /** * Implements WSS digest Password Validation. * The method to compute password digest is described in http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0.pdf */ public static class DigestPasswordValidator implements PasswordValidator { public boolean validate(Request request) throws PasswordValidationException { DigestPasswordRequest req = (DigestPasswordRequest)request; String passwd = req.getPassword(); String nonce = req.getNonce(); String created = req.getCreated(); String passwordDigest = req.getDigest(); //String username = req.getUsername(); if (null == passwd) return false; byte[] decodedNonce = null; if (null != nonce) { try { decodedNonce = Base64.decode(nonce); } catch (Base64DecodingException bde) { throw new PasswordValidationException(bde); } } String utf8String = ""; if (created != null) { utf8String += created; } utf8String += passwd; byte[] utf8Bytes; try { utf8Bytes = utf8String.getBytes("utf-8"); } catch (UnsupportedEncodingException uee) { throw new PasswordValidationException(uee); } byte[] bytesToHash; if (decodedNonce != null) { bytesToHash = new byte[utf8Bytes.length + decodedNonce.length]; for (int i = 0; i < decodedNonce.length; i++) bytesToHash[i] = decodedNonce[i]; for (int i = decodedNonce.length; i < utf8Bytes.length + decodedNonce.length; i++) bytesToHash[i] = utf8Bytes[i - decodedNonce.length]; } else { bytesToHash = utf8Bytes; } byte[] hash; try { MessageDigest sha = MessageDigest.getInstance("SHA-1"); hash = sha.digest(bytesToHash); } catch (Exception e) { throw new PasswordValidationException( "Password Digest could not be created" + e); } return (passwordDigest.equals(Base64.encode(hash))); } } public abstract static class WsitDigestPasswordValidator extends DigestPasswordValidator { public abstract void setPassword(Request request); } public abstract static class DerivedKeyPasswordValidator implements PasswordValidator { public abstract void setPassword(Request request); } public static class PasswordValidationException extends Exception { public PasswordValidationException(String message) { super(message); } public PasswordValidationException(String message, Throwable cause) { super(message, cause); } public PasswordValidationException(Throwable cause) { super(cause); } } }





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