| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.nifi.web.security; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.nifi.authorization.user.NiFiUserUtils; |
| import org.apache.nifi.util.NiFiProperties; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.security.authentication.AuthenticationManager; |
| import org.springframework.security.authentication.AuthenticationServiceException; |
| import org.springframework.security.core.Authentication; |
| import org.springframework.security.core.AuthenticationException; |
| import org.springframework.security.core.context.SecurityContextHolder; |
| import org.springframework.web.filter.GenericFilterBean; |
| |
| import javax.servlet.FilterChain; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| |
| /** |
| * The NiFiAuthenticationFilter abstract class defines the base methods for NiFi's various existing and future |
| * authentication mechanisms. The subclassed filters are applied in NiFiWebApiSecurityConfiguration. |
| */ |
| public abstract class NiFiAuthenticationFilter extends GenericFilterBean { |
| |
| private static final Logger log = LoggerFactory.getLogger(NiFiAuthenticationFilter.class); |
| |
| private AuthenticationManager authenticationManager; |
| private NiFiProperties properties; |
| |
| @Override |
| public void doFilter(final ServletRequest request, final ServletResponse response, final FilterChain chain) throws IOException, ServletException { |
| final Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); |
| if (log.isDebugEnabled()) { |
| log.debug("Checking secure context token: " + authentication); |
| } |
| |
| if (requiresAuthentication((HttpServletRequest) request)) { |
| authenticate((HttpServletRequest) request, (HttpServletResponse) response, chain); |
| } else { |
| chain.doFilter(request, response); |
| } |
| |
| } |
| |
| private boolean requiresAuthentication(final HttpServletRequest request) { |
| return NiFiUserUtils.getNiFiUser() == null; |
| } |
| |
| private void authenticate(final HttpServletRequest request, final HttpServletResponse response, final FilterChain chain) throws IOException, ServletException { |
| try { |
| final Authentication authenticationRequest = attemptAuthentication(request); |
| if (authenticationRequest != null) { |
| // log the request attempt - response details will be logged later |
| log.info(String.format("Attempting request for (%s) %s %s (source ip: %s)", authenticationRequest.toString(), request.getMethod(), |
| request.getRequestURL().toString(), request.getRemoteAddr())); |
| |
| // attempt to authenticate the user |
| final Authentication authenticated = authenticationManager.authenticate(authenticationRequest); |
| successfulAuthentication(request, response, authenticated); |
| } |
| } catch (final AuthenticationException ae) { |
| // invalid authentication - always error out |
| unsuccessfulAuthentication(request, response, ae); |
| return; |
| } catch (final Exception e) { |
| log.error(String.format("Unable to authenticate: %s", e.getMessage()), e); |
| |
| // set the response status |
| response.setContentType("text/plain"); |
| response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); |
| |
| // other exception - always error out |
| PrintWriter out = response.getWriter(); |
| out.println(String.format("Failed to authenticate request. Please contact the system administrator.")); |
| return; |
| } |
| |
| // continue |
| chain.doFilter(request, response); |
| } |
| |
| /** |
| * Attempt to extract an authentication attempt from the specified request. |
| * |
| * @param request The request |
| * @return The authentication attempt or null if none is found int he request |
| */ |
| public abstract Authentication attemptAuthentication(HttpServletRequest request); |
| |
| /** |
| * If authentication was successful, apply the successful authentication result to the security context and add |
| * proxy headers to the response if the request was made via a proxy. |
| * |
| * @param request The original client request that was successfully authenticated. |
| * @param response Servlet response to the client containing the successful authentication details. |
| * @param authResult The Authentication 'token'/object created by one of the various NiFiAuthenticationFilter subclasses. |
| */ |
| protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, Authentication authResult) { |
| log.info("Authentication success for " + authResult); |
| |
| SecurityContextHolder.getContext().setAuthentication(authResult); |
| ProxiedEntitiesUtils.successfulAuthentication(request, response); |
| } |
| |
| /** |
| * If authentication was unsuccessful, update the response with the appropriate status and give the reason for why |
| * the user was not able to be authenticated. Update the response with proxy headers if the request was made via a proxy. |
| * |
| * @param request The original client request that failed to be authenticated. |
| * @param response Servlet response to the client containing the unsuccessful authentication attempt details. |
| * @param ae The related exception thrown and explanation for the unsuccessful authentication attempt. |
| */ |
| protected void unsuccessfulAuthentication(HttpServletRequest request, HttpServletResponse response, AuthenticationException ae) throws IOException { |
| // populate the response |
| ProxiedEntitiesUtils.unsuccessfulAuthentication(request, response, ae); |
| |
| // set the response status |
| response.setContentType("text/plain"); |
| |
| // write the response message |
| PrintWriter out = response.getWriter(); |
| |
| // use the type of authentication exception to determine the response code |
| if (ae instanceof InvalidAuthenticationException) { |
| response.setStatus(HttpServletResponse.SC_UNAUTHORIZED); |
| out.println(ae.getMessage()); |
| } else if (ae instanceof UntrustedProxyException) { |
| response.setStatus(HttpServletResponse.SC_FORBIDDEN); |
| out.println(ae.getMessage()); |
| } else if (ae instanceof AuthenticationServiceException) { |
| log.error(String.format("Unable to authenticate: %s", ae.getMessage()), ae); |
| response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); |
| out.println(String.format("Unable to authenticate: %s", ae.getMessage())); |
| } else { |
| log.error(String.format("Unable to authenticate: %s", ae.getMessage()), ae); |
| response.setStatus(HttpServletResponse.SC_FORBIDDEN); |
| out.println("Access is denied."); |
| } |
| |
| // log the failure |
| log.warn(String.format("Rejecting access to web api: %s", ae.getMessage())); |
| |
| // optionally log the stack trace |
| if (log.isDebugEnabled()) { |
| log.debug(StringUtils.EMPTY, ae); |
| } |
| } |
| |
| @Override |
| public void destroy() { |
| } |
| |
| public void setAuthenticationManager(AuthenticationManager authenticationManager) { |
| this.authenticationManager = authenticationManager; |
| } |
| |
| public void setProperties(NiFiProperties properties) { |
| this.properties = properties; |
| } |
| |
| public NiFiProperties getProperties() { |
| return properties; |
| } |
| } |