org.rzo.netty.ahessian.auth.AuthTokenList.java Source code

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Here is the source code for org.rzo.netty.ahessian.auth.AuthTokenList.java

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/*******************************************************************************
 * Copyright  2015 rzorzorzo@users.sf.net
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package org.rzo.netty.ahessian.auth;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class AuthTokenList implements AuthToken {

    private Map<ByteArrayWrapper, AuthToken> _tokens;
    int _receivedLength = 0;
    byte[] _receivedBytes;
    AuthToken _currentToken;
    boolean _uniqueLogon;
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(SimpleAuthToken.class);

    public AuthTokenList(Map<ByteArrayWrapper, AuthToken> tokens, int bytesLength, boolean uniqueLogon) {
        _tokens = tokens;
        _receivedBytes = new byte[bytesLength];
        _uniqueLogon = uniqueLogon;
    }

    public static AuthTokenList fromList(List<AuthToken> tokens, boolean uniqueLogon) {
        Map<ByteArrayWrapper, AuthToken> tks = new HashMap<ByteArrayWrapper, AuthToken>();
        int bytesLength = 0;
        for (AuthToken token : tokens) {
            byte[] pwd = ((SimpleAuthToken) token).getPassword();
            tks.put(new ByteArrayWrapper(pwd), token);
            if (bytesLength < pwd.length)
                bytesLength = pwd.length;
        }
        return new AuthTokenList(tks, bytesLength, uniqueLogon);
    }

    public static AuthTokenList fromList(List<AuthToken> tokens) {
        return fromList(tokens, false);
    }

    public int authenticate(ChannelHandlerContext ctx, ByteBuf e) {
        ByteBuf b = e;
        int toCopy = Math.min(_receivedBytes.length - _receivedLength, b.readableBytes());
        byte[] bytes = new byte[toCopy];
        b.readBytes(bytes);
        System.arraycopy(bytes, 0, _receivedBytes, _receivedLength, bytes.length);
        _receivedLength += toCopy;
        if (_receivedLength == _receivedBytes.length) {
            _currentToken = _tokens.get(new ByteArrayWrapper(_receivedBytes));
            if (_currentToken != null && (_uniqueLogon || _currentToken.isLoggedOn())) {
                logger.info("authenticated");
                ((SimpleAuthToken) _currentToken).setLoggedOn(true);
                if (b.readableBytes() != 0)
                    ctx.fireChannelRead(e);
                return PASSED;
            } else {
                _currentToken = null;
                return FAILED;
            }
        } else
            return NOT_COMPLETE;

    }

    public AuthToken authenticate(String password) throws Exception {
        ByteArrayWrapper input = new ByteArrayWrapper(password.getBytes("UTF-8"));
        AuthToken result = _tokens.get(input);
        if (result == null)
            return null;
        if (_uniqueLogon && result.isLoggedOn())
            return null;
        ((SimpleAuthToken) result).setLoggedOn(true);
        return result;
    }

    public void sendPassword(ChannelHandlerContext ctx) {
        ;
    }

    public boolean isLoggedOn() {
        return _currentToken != null;
    }

    public void setLoggedOn(boolean value) {
        if (!value && _currentToken != null) {
            ((SimpleAuthToken) _currentToken).setLoggedOn(false);
            _currentToken = null;
        }
    }

    public void disconnected() {
        setLoggedOn(false);
    }

}