Jake Slack | 03928ae | 2014-05-13 18:41:56 -0700 | [diff] [blame] | 1 | // |
| 2 | // ======================================================================== |
| 3 | // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| 4 | // ------------------------------------------------------------------------ |
| 5 | // All rights reserved. This program and the accompanying materials |
| 6 | // are made available under the terms of the Eclipse Public License v1.0 |
| 7 | // and Apache License v2.0 which accompanies this distribution. |
| 8 | // |
| 9 | // The Eclipse Public License is available at |
| 10 | // http://www.eclipse.org/legal/epl-v10.html |
| 11 | // |
| 12 | // The Apache License v2.0 is available at |
| 13 | // http://www.opensource.org/licenses/apache2.0.php |
| 14 | // |
| 15 | // You may elect to redistribute this code under either of these licenses. |
| 16 | // ======================================================================== |
| 17 | // |
| 18 | |
| 19 | package org.eclipse.jetty.security.authentication; |
| 20 | |
| 21 | import java.io.IOException; |
| 22 | import java.util.Collections; |
| 23 | import java.util.Enumeration; |
| 24 | import java.util.Locale; |
| 25 | |
| 26 | import javax.servlet.RequestDispatcher; |
| 27 | import javax.servlet.ServletException; |
| 28 | import javax.servlet.ServletRequest; |
| 29 | import javax.servlet.ServletResponse; |
| 30 | import javax.servlet.http.HttpServletRequest; |
| 31 | import javax.servlet.http.HttpServletRequestWrapper; |
| 32 | import javax.servlet.http.HttpServletResponse; |
| 33 | import javax.servlet.http.HttpServletResponseWrapper; |
| 34 | import javax.servlet.http.HttpSession; |
| 35 | |
| 36 | import org.eclipse.jetty.http.HttpHeaders; |
| 37 | import org.eclipse.jetty.http.HttpMethods; |
| 38 | import org.eclipse.jetty.http.MimeTypes; |
| 39 | import org.eclipse.jetty.security.ServerAuthException; |
| 40 | import org.eclipse.jetty.security.UserAuthentication; |
| 41 | import org.eclipse.jetty.server.AbstractHttpConnection; |
| 42 | import org.eclipse.jetty.server.Authentication; |
| 43 | import org.eclipse.jetty.server.Authentication.User; |
| 44 | import org.eclipse.jetty.server.Request; |
| 45 | import org.eclipse.jetty.server.UserIdentity; |
| 46 | import org.eclipse.jetty.util.MultiMap; |
| 47 | import org.eclipse.jetty.util.StringUtil; |
| 48 | import org.eclipse.jetty.util.URIUtil; |
| 49 | import org.eclipse.jetty.util.log.Log; |
| 50 | import org.eclipse.jetty.util.log.Logger; |
| 51 | import org.eclipse.jetty.util.security.Constraint; |
| 52 | |
| 53 | /** |
| 54 | * FORM Authenticator. |
| 55 | * |
| 56 | * <p>This authenticator implements form authentication will use dispatchers to |
| 57 | * the login page if the {@link #__FORM_DISPATCH} init parameter is set to true. |
| 58 | * Otherwise it will redirect.</p> |
| 59 | * |
| 60 | * <p>The form authenticator redirects unauthenticated requests to a log page |
| 61 | * which should use a form to gather username/password from the user and send them |
| 62 | * to the /j_security_check URI within the context. FormAuthentication uses |
| 63 | * {@link SessionAuthentication} to wrap Authentication results so that they |
| 64 | * are associated with the session.</p> |
| 65 | * |
| 66 | * |
| 67 | */ |
| 68 | public class FormAuthenticator extends LoginAuthenticator |
| 69 | { |
| 70 | private static final Logger LOG = Log.getLogger(FormAuthenticator.class); |
| 71 | |
| 72 | public final static String __FORM_LOGIN_PAGE="org.eclipse.jetty.security.form_login_page"; |
| 73 | public final static String __FORM_ERROR_PAGE="org.eclipse.jetty.security.form_error_page"; |
| 74 | public final static String __FORM_DISPATCH="org.eclipse.jetty.security.dispatch"; |
| 75 | public final static String __J_URI = "org.eclipse.jetty.security.form_URI"; |
| 76 | public final static String __J_POST = "org.eclipse.jetty.security.form_POST"; |
| 77 | public final static String __J_SECURITY_CHECK = "/j_security_check"; |
| 78 | public final static String __J_USERNAME = "j_username"; |
| 79 | public final static String __J_PASSWORD = "j_password"; |
| 80 | |
| 81 | private String _formErrorPage; |
| 82 | private String _formErrorPath; |
| 83 | private String _formLoginPage; |
| 84 | private String _formLoginPath; |
| 85 | private boolean _dispatch; |
| 86 | private boolean _alwaysSaveUri; |
| 87 | |
| 88 | public FormAuthenticator() |
| 89 | { |
| 90 | } |
| 91 | |
| 92 | /* ------------------------------------------------------------ */ |
| 93 | public FormAuthenticator(String login,String error,boolean dispatch) |
| 94 | { |
| 95 | this(); |
| 96 | if (login!=null) |
| 97 | setLoginPage(login); |
| 98 | if (error!=null) |
| 99 | setErrorPage(error); |
| 100 | _dispatch=dispatch; |
| 101 | } |
| 102 | |
| 103 | /* ------------------------------------------------------------ */ |
| 104 | /** |
| 105 | * If true, uris that cause a redirect to a login page will always |
| 106 | * be remembered. If false, only the first uri that leads to a login |
| 107 | * page redirect is remembered. |
| 108 | * See https://bugs.eclipse.org/bugs/show_bug.cgi?id=379909 |
| 109 | * @param alwaysSave |
| 110 | */ |
| 111 | public void setAlwaysSaveUri (boolean alwaysSave) |
| 112 | { |
| 113 | _alwaysSaveUri = alwaysSave; |
| 114 | } |
| 115 | |
| 116 | |
| 117 | /* ------------------------------------------------------------ */ |
| 118 | public boolean getAlwaysSaveUri () |
| 119 | { |
| 120 | return _alwaysSaveUri; |
| 121 | } |
| 122 | |
| 123 | /* ------------------------------------------------------------ */ |
| 124 | /** |
| 125 | * @see org.eclipse.jetty.security.authentication.LoginAuthenticator#setConfiguration(org.eclipse.jetty.security.Authenticator.AuthConfiguration) |
| 126 | */ |
| 127 | @Override |
| 128 | public void setConfiguration(AuthConfiguration configuration) |
| 129 | { |
| 130 | super.setConfiguration(configuration); |
| 131 | String login=configuration.getInitParameter(FormAuthenticator.__FORM_LOGIN_PAGE); |
| 132 | if (login!=null) |
| 133 | setLoginPage(login); |
| 134 | String error=configuration.getInitParameter(FormAuthenticator.__FORM_ERROR_PAGE); |
| 135 | if (error!=null) |
| 136 | setErrorPage(error); |
| 137 | String dispatch=configuration.getInitParameter(FormAuthenticator.__FORM_DISPATCH); |
| 138 | _dispatch = dispatch==null?_dispatch:Boolean.valueOf(dispatch); |
| 139 | } |
| 140 | |
| 141 | /* ------------------------------------------------------------ */ |
| 142 | public String getAuthMethod() |
| 143 | { |
| 144 | return Constraint.__FORM_AUTH; |
| 145 | } |
| 146 | |
| 147 | /* ------------------------------------------------------------ */ |
| 148 | private void setLoginPage(String path) |
| 149 | { |
| 150 | if (!path.startsWith("/")) |
| 151 | { |
| 152 | LOG.warn("form-login-page must start with /"); |
| 153 | path = "/" + path; |
| 154 | } |
| 155 | _formLoginPage = path; |
| 156 | _formLoginPath = path; |
| 157 | if (_formLoginPath.indexOf('?') > 0) |
| 158 | _formLoginPath = _formLoginPath.substring(0, _formLoginPath.indexOf('?')); |
| 159 | } |
| 160 | |
| 161 | /* ------------------------------------------------------------ */ |
| 162 | private void setErrorPage(String path) |
| 163 | { |
| 164 | if (path == null || path.trim().length() == 0) |
| 165 | { |
| 166 | _formErrorPath = null; |
| 167 | _formErrorPage = null; |
| 168 | } |
| 169 | else |
| 170 | { |
| 171 | if (!path.startsWith("/")) |
| 172 | { |
| 173 | LOG.warn("form-error-page must start with /"); |
| 174 | path = "/" + path; |
| 175 | } |
| 176 | _formErrorPage = path; |
| 177 | _formErrorPath = path; |
| 178 | |
| 179 | if (_formErrorPath.indexOf('?') > 0) |
| 180 | _formErrorPath = _formErrorPath.substring(0, _formErrorPath.indexOf('?')); |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | |
| 185 | /* ------------------------------------------------------------ */ |
| 186 | @Override |
| 187 | public UserIdentity login(String username, Object password, ServletRequest request) |
| 188 | { |
| 189 | |
| 190 | UserIdentity user = super.login(username,password,request); |
| 191 | if (user!=null) |
| 192 | { |
| 193 | HttpSession session = ((HttpServletRequest)request).getSession(true); |
| 194 | Authentication cached=new SessionAuthentication(getAuthMethod(),user,password); |
| 195 | session.setAttribute(SessionAuthentication.__J_AUTHENTICATED, cached); |
| 196 | } |
| 197 | return user; |
| 198 | } |
| 199 | |
| 200 | /* ------------------------------------------------------------ */ |
| 201 | public Authentication validateRequest(ServletRequest req, ServletResponse res, boolean mandatory) throws ServerAuthException |
| 202 | { |
| 203 | HttpServletRequest request = (HttpServletRequest)req; |
| 204 | HttpServletResponse response = (HttpServletResponse)res; |
| 205 | String uri = request.getRequestURI(); |
| 206 | if (uri==null) |
| 207 | uri=URIUtil.SLASH; |
| 208 | |
| 209 | mandatory|=isJSecurityCheck(uri); |
| 210 | if (!mandatory) |
| 211 | return new DeferredAuthentication(this); |
| 212 | |
| 213 | if (isLoginOrErrorPage(URIUtil.addPaths(request.getServletPath(),request.getPathInfo())) &&!DeferredAuthentication.isDeferred(response)) |
| 214 | return new DeferredAuthentication(this); |
| 215 | |
| 216 | HttpSession session = request.getSession(true); |
| 217 | |
| 218 | try |
| 219 | { |
| 220 | // Handle a request for authentication. |
| 221 | if (isJSecurityCheck(uri)) |
| 222 | { |
| 223 | final String username = request.getParameter(__J_USERNAME); |
| 224 | final String password = request.getParameter(__J_PASSWORD); |
| 225 | |
| 226 | UserIdentity user = login(username, password, request); |
| 227 | session = request.getSession(true); |
| 228 | if (user!=null) |
| 229 | { |
| 230 | // Redirect to original request |
| 231 | String nuri; |
| 232 | synchronized(session) |
| 233 | { |
| 234 | nuri = (String) session.getAttribute(__J_URI); |
| 235 | |
| 236 | if (nuri == null || nuri.length() == 0) |
| 237 | { |
| 238 | nuri = request.getContextPath(); |
| 239 | if (nuri.length() == 0) |
| 240 | nuri = URIUtil.SLASH; |
| 241 | } |
| 242 | } |
| 243 | response.setContentLength(0); |
| 244 | response.sendRedirect(response.encodeRedirectURL(nuri)); |
| 245 | |
| 246 | return new FormAuthentication(getAuthMethod(),user); |
| 247 | } |
| 248 | |
| 249 | // not authenticated |
| 250 | if (LOG.isDebugEnabled()) |
| 251 | LOG.debug("Form authentication FAILED for " + StringUtil.printable(username)); |
| 252 | if (_formErrorPage == null) |
| 253 | { |
| 254 | if (response != null) |
| 255 | response.sendError(HttpServletResponse.SC_FORBIDDEN); |
| 256 | } |
| 257 | else if (_dispatch) |
| 258 | { |
| 259 | RequestDispatcher dispatcher = request.getRequestDispatcher(_formErrorPage); |
| 260 | response.setHeader(HttpHeaders.CACHE_CONTROL,"No-cache"); |
| 261 | response.setDateHeader(HttpHeaders.EXPIRES,1); |
| 262 | dispatcher.forward(new FormRequest(request), new FormResponse(response)); |
| 263 | } |
| 264 | else |
| 265 | { |
| 266 | response.sendRedirect(response.encodeRedirectURL(URIUtil.addPaths(request.getContextPath(),_formErrorPage))); |
| 267 | } |
| 268 | |
| 269 | return Authentication.SEND_FAILURE; |
| 270 | } |
| 271 | |
| 272 | // Look for cached authentication |
| 273 | Authentication authentication = (Authentication) session.getAttribute(SessionAuthentication.__J_AUTHENTICATED); |
| 274 | if (authentication != null) |
| 275 | { |
| 276 | // Has authentication been revoked? |
| 277 | if (authentication instanceof Authentication.User && |
| 278 | _loginService!=null && |
| 279 | !_loginService.validate(((Authentication.User)authentication).getUserIdentity())) |
| 280 | { |
| 281 | |
| 282 | session.removeAttribute(SessionAuthentication.__J_AUTHENTICATED); |
| 283 | } |
| 284 | else |
| 285 | { |
| 286 | String j_uri=(String)session.getAttribute(__J_URI); |
| 287 | if (j_uri!=null) |
| 288 | { |
| 289 | MultiMap<String> j_post = (MultiMap<String>)session.getAttribute(__J_POST); |
| 290 | if (j_post!=null) |
| 291 | { |
| 292 | StringBuffer buf = request.getRequestURL(); |
| 293 | if (request.getQueryString() != null) |
| 294 | buf.append("?").append(request.getQueryString()); |
| 295 | |
| 296 | if (j_uri.equals(buf.toString())) |
| 297 | { |
| 298 | // This is a retry of an original POST request |
| 299 | // so restore method and parameters |
| 300 | |
| 301 | session.removeAttribute(__J_POST); |
| 302 | Request base_request = (req instanceof Request)?(Request)req:AbstractHttpConnection.getCurrentConnection().getRequest(); |
| 303 | base_request.setMethod(HttpMethods.POST); |
| 304 | base_request.setParameters(j_post); |
| 305 | } |
| 306 | } |
| 307 | else |
| 308 | session.removeAttribute(__J_URI); |
| 309 | |
| 310 | } |
| 311 | return authentication; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | // if we can't send challenge |
| 316 | if (DeferredAuthentication.isDeferred(response)) |
| 317 | { |
| 318 | LOG.debug("auth deferred {}",session.getId()); |
| 319 | return Authentication.UNAUTHENTICATED; |
| 320 | } |
| 321 | |
| 322 | // remember the current URI |
| 323 | synchronized (session) |
| 324 | { |
| 325 | // But only if it is not set already, or we save every uri that leads to a login form redirect |
| 326 | if (session.getAttribute(__J_URI)==null || _alwaysSaveUri) |
| 327 | { |
| 328 | StringBuffer buf = request.getRequestURL(); |
| 329 | if (request.getQueryString() != null) |
| 330 | buf.append("?").append(request.getQueryString()); |
| 331 | session.setAttribute(__J_URI, buf.toString()); |
| 332 | |
| 333 | if (MimeTypes.FORM_ENCODED.equalsIgnoreCase(req.getContentType()) && HttpMethods.POST.equals(request.getMethod())) |
| 334 | { |
| 335 | Request base_request = (req instanceof Request)?(Request)req:AbstractHttpConnection.getCurrentConnection().getRequest(); |
| 336 | base_request.extractParameters(); |
| 337 | session.setAttribute(__J_POST, new MultiMap<String>(base_request.getParameters())); |
| 338 | } |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | // send the the challenge |
| 343 | if (_dispatch) |
| 344 | { |
| 345 | RequestDispatcher dispatcher = request.getRequestDispatcher(_formLoginPage); |
| 346 | response.setHeader(HttpHeaders.CACHE_CONTROL,"No-cache"); |
| 347 | response.setDateHeader(HttpHeaders.EXPIRES,1); |
| 348 | dispatcher.forward(new FormRequest(request), new FormResponse(response)); |
| 349 | } |
| 350 | else |
| 351 | { |
| 352 | response.sendRedirect(response.encodeRedirectURL(URIUtil.addPaths(request.getContextPath(),_formLoginPage))); |
| 353 | } |
| 354 | return Authentication.SEND_CONTINUE; |
| 355 | |
| 356 | |
| 357 | } |
| 358 | catch (IOException e) |
| 359 | { |
| 360 | throw new ServerAuthException(e); |
| 361 | } |
| 362 | catch (ServletException e) |
| 363 | { |
| 364 | throw new ServerAuthException(e); |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | /* ------------------------------------------------------------ */ |
| 369 | public boolean isJSecurityCheck(String uri) |
| 370 | { |
| 371 | int jsc = uri.indexOf(__J_SECURITY_CHECK); |
| 372 | |
| 373 | if (jsc<0) |
| 374 | return false; |
| 375 | int e=jsc+__J_SECURITY_CHECK.length(); |
| 376 | if (e==uri.length()) |
| 377 | return true; |
| 378 | char c = uri.charAt(e); |
| 379 | return c==';'||c=='#'||c=='/'||c=='?'; |
| 380 | } |
| 381 | |
| 382 | /* ------------------------------------------------------------ */ |
| 383 | public boolean isLoginOrErrorPage(String pathInContext) |
| 384 | { |
| 385 | return pathInContext != null && (pathInContext.equals(_formErrorPath) || pathInContext.equals(_formLoginPath)); |
| 386 | } |
| 387 | |
| 388 | /* ------------------------------------------------------------ */ |
| 389 | public boolean secureResponse(ServletRequest req, ServletResponse res, boolean mandatory, User validatedUser) throws ServerAuthException |
| 390 | { |
| 391 | return true; |
| 392 | } |
| 393 | |
| 394 | /* ------------------------------------------------------------ */ |
| 395 | /* ------------------------------------------------------------ */ |
| 396 | protected static class FormRequest extends HttpServletRequestWrapper |
| 397 | { |
| 398 | public FormRequest(HttpServletRequest request) |
| 399 | { |
| 400 | super(request); |
| 401 | } |
| 402 | |
| 403 | @Override |
| 404 | public long getDateHeader(String name) |
| 405 | { |
| 406 | if (name.toLowerCase(Locale.ENGLISH).startsWith("if-")) |
| 407 | return -1; |
| 408 | return super.getDateHeader(name); |
| 409 | } |
| 410 | |
| 411 | @Override |
| 412 | public String getHeader(String name) |
| 413 | { |
| 414 | if (name.toLowerCase(Locale.ENGLISH).startsWith("if-")) |
| 415 | return null; |
| 416 | return super.getHeader(name); |
| 417 | } |
| 418 | |
| 419 | @Override |
| 420 | public Enumeration getHeaderNames() |
| 421 | { |
| 422 | return Collections.enumeration(Collections.list(super.getHeaderNames())); |
| 423 | } |
| 424 | |
| 425 | @Override |
| 426 | public Enumeration getHeaders(String name) |
| 427 | { |
| 428 | if (name.toLowerCase(Locale.ENGLISH).startsWith("if-")) |
| 429 | return Collections.enumeration(Collections.EMPTY_LIST); |
| 430 | return super.getHeaders(name); |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | /* ------------------------------------------------------------ */ |
| 435 | /* ------------------------------------------------------------ */ |
| 436 | protected static class FormResponse extends HttpServletResponseWrapper |
| 437 | { |
| 438 | public FormResponse(HttpServletResponse response) |
| 439 | { |
| 440 | super(response); |
| 441 | } |
| 442 | |
| 443 | @Override |
| 444 | public void addDateHeader(String name, long date) |
| 445 | { |
| 446 | if (notIgnored(name)) |
| 447 | super.addDateHeader(name,date); |
| 448 | } |
| 449 | |
| 450 | @Override |
| 451 | public void addHeader(String name, String value) |
| 452 | { |
| 453 | if (notIgnored(name)) |
| 454 | super.addHeader(name,value); |
| 455 | } |
| 456 | |
| 457 | @Override |
| 458 | public void setDateHeader(String name, long date) |
| 459 | { |
| 460 | if (notIgnored(name)) |
| 461 | super.setDateHeader(name,date); |
| 462 | } |
| 463 | |
| 464 | @Override |
| 465 | public void setHeader(String name, String value) |
| 466 | { |
| 467 | if (notIgnored(name)) |
| 468 | super.setHeader(name,value); |
| 469 | } |
| 470 | |
| 471 | private boolean notIgnored(String name) |
| 472 | { |
| 473 | if (HttpHeaders.CACHE_CONTROL.equalsIgnoreCase(name) || |
| 474 | HttpHeaders.PRAGMA.equalsIgnoreCase(name) || |
| 475 | HttpHeaders.ETAG.equalsIgnoreCase(name) || |
| 476 | HttpHeaders.EXPIRES.equalsIgnoreCase(name) || |
| 477 | HttpHeaders.LAST_MODIFIED.equalsIgnoreCase(name) || |
| 478 | HttpHeaders.AGE.equalsIgnoreCase(name)) |
| 479 | return false; |
| 480 | return true; |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | /* ------------------------------------------------------------ */ |
| 485 | /** This Authentication represents a just completed Form authentication. |
| 486 | * Subsequent requests from the same user are authenticated by the presents |
| 487 | * of a {@link SessionAuthentication} instance in their session. |
| 488 | */ |
| 489 | public static class FormAuthentication extends UserAuthentication implements Authentication.ResponseSent |
| 490 | { |
| 491 | public FormAuthentication(String method, UserIdentity userIdentity) |
| 492 | { |
| 493 | super(method,userIdentity); |
| 494 | } |
| 495 | |
| 496 | @Override |
| 497 | public String toString() |
| 498 | { |
| 499 | return "Form"+super.toString(); |
| 500 | } |
| 501 | } |
| 502 | } |