| /** |
| * 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.knox.gateway.service.knoxsso; |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.net.URLDecoder; |
| import java.security.Principal; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import javax.annotation.PostConstruct; |
| import javax.servlet.ServletContext; |
| import javax.servlet.http.Cookie; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import javax.servlet.http.HttpSession; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.POST; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.WebApplicationException; |
| |
| import org.apache.knox.gateway.i18n.messages.MessagesFactory; |
| import org.apache.knox.gateway.services.GatewayServices; |
| import org.apache.knox.gateway.services.security.token.JWTokenAuthority; |
| import org.apache.knox.gateway.services.security.token.TokenServiceException; |
| import org.apache.knox.gateway.services.security.token.impl.JWT; |
| import org.apache.knox.gateway.util.RegExUtils; |
| import org.apache.knox.gateway.util.Urls; |
| import org.apache.knox.gateway.util.WhitelistUtils; |
| |
| import static javax.ws.rs.core.MediaType.APPLICATION_JSON; |
| import static javax.ws.rs.core.MediaType.APPLICATION_XML; |
| |
| @Path( WebSSOResource.RESOURCE_PATH ) |
| public class WebSSOResource { |
| private static final String SSO_COOKIE_NAME = "knoxsso.cookie.name"; |
| private static final String SSO_COOKIE_SECURE_ONLY_INIT_PARAM = "knoxsso.cookie.secure.only"; |
| private static final String SSO_COOKIE_MAX_AGE_INIT_PARAM = "knoxsso.cookie.max.age"; |
| private static final String SSO_COOKIE_DOMAIN_SUFFIX_PARAM = "knoxsso.cookie.domain.suffix"; |
| private static final String SSO_COOKIE_TOKEN_TTL_PARAM = "knoxsso.token.ttl"; |
| private static final String SSO_COOKIE_TOKEN_AUDIENCES_PARAM = "knoxsso.token.audiences"; |
| private static final String SSO_COOKIE_TOKEN_SIG_ALG = "knoxsso.token.sigalg"; |
| private static final String SSO_COOKIE_TOKEN_WHITELIST_PARAM = "knoxsso.redirect.whitelist.regex"; |
| private static final String SSO_ENABLE_SESSION_PARAM = "knoxsso.enable.session"; |
| private static final String ORIGINAL_URL_REQUEST_PARAM = "originalUrl"; |
| private static final String ORIGINAL_URL_COOKIE_NAME = "original-url"; |
| private static final String DEFAULT_SSO_COOKIE_NAME = "hadoop-jwt"; |
| private static final long TOKEN_TTL_DEFAULT = 30000L; |
| static final String RESOURCE_PATH = "/api/v1/websso"; |
| private static KnoxSSOMessages log = MessagesFactory.get( KnoxSSOMessages.class ); |
| private String cookieName = null; |
| private boolean secureOnly = true; |
| private int maxAge = -1; |
| private long tokenTTL = TOKEN_TTL_DEFAULT; |
| private String whitelist = null; |
| private String domainSuffix = null; |
| private List<String> targetAudiences = new ArrayList<>(); |
| private boolean enableSession = false; |
| private String signatureAlgorithm = "RS256"; |
| |
| @Context |
| HttpServletRequest request; |
| |
| @Context |
| HttpServletResponse response; |
| |
| @Context |
| ServletContext context; |
| |
| @PostConstruct |
| public void init() { |
| |
| // configured cookieName |
| cookieName = context.getInitParameter(SSO_COOKIE_NAME); |
| if (cookieName == null) { |
| cookieName = DEFAULT_SSO_COOKIE_NAME; |
| } |
| |
| String secure = context.getInitParameter(SSO_COOKIE_SECURE_ONLY_INIT_PARAM); |
| if (secure != null) { |
| secureOnly = ("false".equals(secure) ? false : true); |
| if (!secureOnly) { |
| log.cookieSecureOnly(secureOnly); |
| } |
| } |
| |
| String age = context.getInitParameter(SSO_COOKIE_MAX_AGE_INIT_PARAM); |
| if (age != null) { |
| try { |
| log.setMaxAge(age); |
| maxAge = Integer.parseInt(age); |
| } |
| catch (NumberFormatException nfe) { |
| log.invalidMaxAgeEncountered(age); |
| } |
| } |
| |
| domainSuffix = context.getInitParameter(SSO_COOKIE_DOMAIN_SUFFIX_PARAM); |
| |
| whitelist = context.getInitParameter(SSO_COOKIE_TOKEN_WHITELIST_PARAM); |
| if (whitelist == null) { |
| whitelist = WhitelistUtils.getDispatchWhitelist(request); |
| } |
| |
| String audiences = context.getInitParameter(SSO_COOKIE_TOKEN_AUDIENCES_PARAM); |
| if (audiences != null) { |
| String[] auds = audiences.split(","); |
| for (int i = 0; i < auds.length; i++) { |
| targetAudiences.add(auds[i].trim()); |
| } |
| } |
| |
| String ttl = context.getInitParameter(SSO_COOKIE_TOKEN_TTL_PARAM); |
| if (ttl != null) { |
| try { |
| tokenTTL = Long.parseLong(ttl); |
| if (tokenTTL < -1 || (tokenTTL + System.currentTimeMillis() < 0)) { |
| log.invalidTokenTTLEncountered(ttl); |
| tokenTTL = TOKEN_TTL_DEFAULT; |
| } |
| } |
| catch (NumberFormatException nfe) { |
| log.invalidTokenTTLEncountered(ttl); |
| } |
| } |
| |
| String enableSession = context.getInitParameter(SSO_ENABLE_SESSION_PARAM); |
| this.enableSession = ("true".equals(enableSession)); |
| |
| String sigAlg = context.getInitParameter(SSO_COOKIE_TOKEN_SIG_ALG); |
| if (sigAlg != null) { |
| signatureAlgorithm = sigAlg; |
| } |
| } |
| |
| @GET |
| @Produces({APPLICATION_JSON, APPLICATION_XML}) |
| public Response doGet() { |
| return getAuthenticationToken(HttpServletResponse.SC_TEMPORARY_REDIRECT); |
| } |
| |
| @POST |
| @Produces({APPLICATION_JSON, APPLICATION_XML}) |
| public Response doPost() { |
| return getAuthenticationToken(HttpServletResponse.SC_SEE_OTHER); |
| } |
| |
| private Response getAuthenticationToken(int statusCode) { |
| GatewayServices services = |
| (GatewayServices) request.getServletContext().getAttribute(GatewayServices.GATEWAY_SERVICES_ATTRIBUTE); |
| boolean removeOriginalUrlCookie = true; |
| String original = getCookieValue((HttpServletRequest) request, ORIGINAL_URL_COOKIE_NAME); |
| if (original == null) { |
| // in the case where there are no SAML redirects done before here |
| // we need to get it from the request parameters |
| removeOriginalUrlCookie = false; |
| original = getOriginalUrlFromQueryParams(); |
| if (original.isEmpty()) { |
| log.originalURLNotFound(); |
| throw new WebApplicationException("Original URL not found in the request.", Response.Status.BAD_REQUEST); |
| } |
| |
| boolean validRedirect = true; |
| |
| // If there is a whitelist defined, then the original URL must be validated against it. |
| // If there is no whitelist, then everything is valid. |
| if (whitelist != null) { |
| String decodedOriginal = null; |
| try { |
| decodedOriginal = URLDecoder.decode(original, "UTF-8"); |
| } catch (UnsupportedEncodingException e) { |
| // |
| } |
| |
| validRedirect = RegExUtils.checkWhitelist(whitelist, (decodedOriginal != null ? decodedOriginal : original)); |
| } |
| |
| if (!validRedirect) { |
| log.whiteListMatchFail(original, whitelist); |
| throw new WebApplicationException("Original URL not valid according to the configured whitelist.", |
| Response.Status.BAD_REQUEST); |
| } |
| } |
| |
| JWTokenAuthority ts = services.getService(GatewayServices.TOKEN_SERVICE); |
| Principal p = ((HttpServletRequest)request).getUserPrincipal(); |
| |
| try { |
| JWT token = null; |
| if (targetAudiences.isEmpty()) { |
| token = ts.issueToken(p, signatureAlgorithm, getExpiry()); |
| } else { |
| token = ts.issueToken(p, targetAudiences, signatureAlgorithm, getExpiry()); |
| } |
| |
| // Coverity CID 1327959 |
| if( token != null ) { |
| addJWTHadoopCookie( original, token ); |
| } |
| |
| if (removeOriginalUrlCookie) { |
| removeOriginalUrlCookie(response); |
| } |
| |
| log.aboutToRedirectToOriginal(original); |
| response.setStatus(statusCode); |
| response.setHeader("Location", original); |
| try { |
| response.getOutputStream().close(); |
| } catch (IOException e) { |
| log.unableToCloseOutputStream(e.getMessage(), Arrays.toString(e.getStackTrace())); |
| } |
| } |
| catch (TokenServiceException e) { |
| log.unableToIssueToken(e); |
| } |
| URI location = null; |
| try { |
| location = new URI(original); |
| } |
| catch(URISyntaxException urise) { |
| // todo log return error response |
| } |
| |
| if (!enableSession) { |
| // invalidate the session to avoid autologin |
| // Coverity CID 1352857 |
| HttpSession session = request.getSession(false); |
| if( session != null ) { |
| session.invalidate(); |
| } |
| } |
| |
| return Response.seeOther(location).entity("{ \"redirectTo\" : " + original + " }").build(); |
| } |
| |
| private String getOriginalUrlFromQueryParams() { |
| String original = request.getParameter(ORIGINAL_URL_REQUEST_PARAM); |
| StringBuffer buf = new StringBuffer(original); |
| |
| // Add any other query params. |
| // Probably not ideal but will not break existing integrations by requiring |
| // some encoding. |
| Map<String, String[]> params = request.getParameterMap(); |
| for (Entry<String, String[]> entry : params.entrySet()) { |
| if (!ORIGINAL_URL_REQUEST_PARAM.equals(entry.getKey()) |
| && !original.contains(entry.getKey() + "=")) { |
| buf.append("&").append(entry.getKey()); |
| String[] values = entry.getValue(); |
| if (values.length > 0 && values[0] != null) { |
| buf.append("="); |
| } |
| for (int i = 0; i < values.length; i++) { |
| if (values[0] != null) { |
| buf.append(values[i]); |
| if (i < values.length-1) { |
| buf.append("&").append(entry.getKey()).append("="); |
| } |
| } |
| } |
| } |
| } |
| |
| return buf.toString(); |
| } |
| |
| private long getExpiry() { |
| long expiry = 0l; |
| if (tokenTTL == -1) { |
| expiry = -1; |
| } |
| else { |
| expiry = System.currentTimeMillis() + tokenTTL; |
| } |
| return expiry; |
| } |
| |
| private void addJWTHadoopCookie(String original, JWT token) { |
| log.addingJWTCookie(token.toString()); |
| Cookie c = new Cookie(cookieName, token.toString()); |
| c.setPath("/"); |
| try { |
| String domain = Urls.getDomainName(original, domainSuffix); |
| if (domain != null) { |
| c.setDomain(domain); |
| } |
| c.setHttpOnly(true); |
| if (secureOnly) { |
| c.setSecure(true); |
| } |
| if (maxAge != -1) { |
| c.setMaxAge(maxAge); |
| } |
| response.addCookie(c); |
| log.addedJWTCookie(); |
| } |
| catch(Exception e) { |
| log.unableAddCookieToResponse(e.getMessage(), Arrays.toString(e.getStackTrace())); |
| throw new WebApplicationException("Unable to add JWT cookie to response."); |
| } |
| } |
| |
| private void removeOriginalUrlCookie(HttpServletResponse response) { |
| Cookie c = new Cookie(ORIGINAL_URL_COOKIE_NAME, null); |
| c.setMaxAge(0); |
| c.setPath(RESOURCE_PATH); |
| response.addCookie(c); |
| } |
| |
| private String getCookieValue(HttpServletRequest request, String name) { |
| Cookie[] cookies = request.getCookies(); |
| String value = null; |
| if (cookies != null) { |
| for(Cookie cookie : cookies){ |
| if(name.equals(cookie.getName())){ |
| value = cookie.getValue(); |
| } |
| } |
| } |
| if (value == null) { |
| log.cookieNotFound(name); |
| } |
| return value; |
| } |
| } |