blob: f07e43b260a25ba0e9fb7c375265fc5d59f59030 [file] [log] [blame]
/*
* 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;
}
}