/*
* ModeShape (http://www.modeshape.org)
*
* 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.modeshape.web;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.StringTokenizer;
import java.util.logging.Logger;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.modeshape.common.util.Base64;
/**
*
* @author kulikov
*/
public class AuthFilter implements Filter {
private final static Logger logger = Logger.getLogger("AuthFilter");
@Override
public void init(FilterConfig fc) {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
String authHeader = ((HttpServletRequest)request).getHeader("Authorization");
HttpSession session = ((HttpServletRequest)request).getSession(true);
String userID = null;
String pass = null;
if (authHeader != null) {
StringTokenizer st = new StringTokenizer(authHeader);
if (st.hasMoreTokens()) {
String basic = st.nextToken();
if (basic.equalsIgnoreCase("Basic")) {
String userPass = new String(Base64.decode(st.nextToken()));
int p = userPass.indexOf(":");
if (p != -1) {
userID = userPass.substring(0, p);
pass = userPass.substring(p + 1);
}
}
}
} else {
//for based?
/* String params = Stream2String(request.getInputStream());
logger.info("Params=" + params);
String[] credentials = params.split("&");
if (credentials.length != 2) {
throw new ServletException("Unknown authentication method");
}
userID = credentials[0].split("=")[0];
pass = credentials[1].split("=")[0];
*/
}
session.setAttribute("uname", userID);
session.setAttribute("password", pass);
chain.doFilter(request, response);
}
private String Stream2String(InputStream in) throws IOException {
ByteArrayOutputStream bout = new ByteArrayOutputStream();
int b;
while ((b = in.read()) != -1) {
bout.write((byte)b);
}
return bout.toString();
}
@Override
public void destroy() {
}
}