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.servlet; |
| 20 | |
| 21 | import java.io.IOException; |
| 22 | import java.util.ArrayList; |
| 23 | import java.util.Arrays; |
| 24 | import java.util.Collection; |
| 25 | import java.util.Collections; |
| 26 | import java.util.HashMap; |
| 27 | import java.util.HashSet; |
| 28 | import java.util.List; |
| 29 | import java.util.Map; |
| 30 | import java.util.Set; |
| 31 | import java.util.Stack; |
| 32 | |
| 33 | import javax.servlet.MultipartConfigElement; |
| 34 | import javax.servlet.Servlet; |
| 35 | import javax.servlet.ServletConfig; |
| 36 | import javax.servlet.ServletException; |
| 37 | import javax.servlet.ServletRegistration; |
| 38 | import javax.servlet.ServletContext; |
| 39 | import javax.servlet.ServletRequest; |
| 40 | import javax.servlet.ServletResponse; |
| 41 | import javax.servlet.ServletSecurityElement; |
| 42 | import javax.servlet.SingleThreadModel; |
| 43 | import javax.servlet.UnavailableException; |
| 44 | |
| 45 | import org.eclipse.jetty.security.IdentityService; |
| 46 | import org.eclipse.jetty.security.RunAsToken; |
| 47 | import org.eclipse.jetty.server.Request; |
| 48 | import org.eclipse.jetty.server.UserIdentity; |
| 49 | import org.eclipse.jetty.server.handler.ContextHandler; |
| 50 | import org.eclipse.jetty.util.Loader; |
| 51 | import org.eclipse.jetty.util.log.Log; |
| 52 | import org.eclipse.jetty.util.log.Logger; |
| 53 | |
| 54 | |
| 55 | |
| 56 | |
| 57 | /* --------------------------------------------------------------------- */ |
| 58 | /** Servlet Instance and Context Holder. |
| 59 | * Holds the name, params and some state of a javax.servlet.Servlet |
| 60 | * instance. It implements the ServletConfig interface. |
| 61 | * This class will organise the loading of the servlet when needed or |
| 62 | * requested. |
| 63 | * |
| 64 | * |
| 65 | */ |
| 66 | public class ServletHolder extends Holder<Servlet> implements UserIdentity.Scope, Comparable |
| 67 | { |
| 68 | private static final Logger LOG = Log.getLogger(ServletHolder.class); |
| 69 | |
| 70 | /* ---------------------------------------------------------------- */ |
| 71 | private int _initOrder; |
| 72 | private boolean _initOnStartup=false; |
| 73 | private Map<String, String> _roleMap; |
| 74 | private String _forcedPath; |
| 75 | private String _runAsRole; |
| 76 | private RunAsToken _runAsToken; |
| 77 | private IdentityService _identityService; |
| 78 | private ServletRegistration.Dynamic _registration; |
| 79 | |
| 80 | |
| 81 | private transient Servlet _servlet; |
| 82 | private transient Config _config; |
| 83 | private transient long _unavailable; |
| 84 | private transient boolean _enabled = true; |
| 85 | private transient UnavailableException _unavailableEx; |
| 86 | public static final Map<String,String> NO_MAPPED_ROLES = Collections.emptyMap(); |
| 87 | |
| 88 | /* ---------------------------------------------------------------- */ |
| 89 | /** Constructor . |
| 90 | */ |
| 91 | public ServletHolder() |
| 92 | { |
| 93 | this(Source.EMBEDDED); |
| 94 | } |
| 95 | |
| 96 | /* ---------------------------------------------------------------- */ |
| 97 | /** Constructor . |
| 98 | */ |
| 99 | public ServletHolder(Holder.Source creator) |
| 100 | { |
| 101 | super(creator); |
| 102 | } |
| 103 | |
| 104 | /* ---------------------------------------------------------------- */ |
| 105 | /** Constructor for existing servlet. |
| 106 | */ |
| 107 | public ServletHolder(Servlet servlet) |
| 108 | { |
| 109 | this(Source.EMBEDDED); |
| 110 | setServlet(servlet); |
| 111 | } |
| 112 | |
| 113 | /* ---------------------------------------------------------------- */ |
| 114 | /** Constructor for servlet class. |
| 115 | */ |
| 116 | public ServletHolder(String name, Class<? extends Servlet> servlet) |
| 117 | { |
| 118 | this(Source.EMBEDDED); |
| 119 | setName(name); |
| 120 | setHeldClass(servlet); |
| 121 | } |
| 122 | |
| 123 | /* ---------------------------------------------------------------- */ |
| 124 | /** Constructor for servlet class. |
| 125 | */ |
| 126 | public ServletHolder(String name, Servlet servlet) |
| 127 | { |
| 128 | this(Source.EMBEDDED); |
| 129 | setName(name); |
| 130 | setServlet(servlet); |
| 131 | } |
| 132 | |
| 133 | /* ---------------------------------------------------------------- */ |
| 134 | /** Constructor for servlet class. |
| 135 | */ |
| 136 | public ServletHolder(Class<? extends Servlet> servlet) |
| 137 | { |
| 138 | this(Source.EMBEDDED); |
| 139 | setHeldClass(servlet); |
| 140 | } |
| 141 | |
| 142 | /* ---------------------------------------------------------------- */ |
| 143 | /** |
| 144 | * @return The unavailable exception or null if not unavailable |
| 145 | */ |
| 146 | public UnavailableException getUnavailableException() |
| 147 | { |
| 148 | return _unavailableEx; |
| 149 | } |
| 150 | |
| 151 | /* ------------------------------------------------------------ */ |
| 152 | public synchronized void setServlet(Servlet servlet) |
| 153 | { |
| 154 | if (servlet==null || servlet instanceof SingleThreadModel) |
| 155 | throw new IllegalArgumentException(); |
| 156 | |
| 157 | _extInstance=true; |
| 158 | _servlet=servlet; |
| 159 | setHeldClass(servlet.getClass()); |
| 160 | if (getName()==null) |
| 161 | setName(servlet.getClass().getName()+"-"+super.hashCode()); |
| 162 | } |
| 163 | |
| 164 | /* ------------------------------------------------------------ */ |
| 165 | public int getInitOrder() |
| 166 | { |
| 167 | return _initOrder; |
| 168 | } |
| 169 | |
| 170 | /* ------------------------------------------------------------ */ |
| 171 | /** Set the initialize order. |
| 172 | * Holders with order<0, are initialized on use. Those with |
| 173 | * order>=0 are initialized in increasing order when the handler |
| 174 | * is started. |
| 175 | */ |
| 176 | public void setInitOrder(int order) |
| 177 | { |
| 178 | _initOnStartup=true; |
| 179 | _initOrder = order; |
| 180 | } |
| 181 | |
| 182 | public boolean isSetInitOrder() |
| 183 | { |
| 184 | return _initOnStartup; |
| 185 | } |
| 186 | |
| 187 | /* ------------------------------------------------------------ */ |
| 188 | /** Comparitor by init order. |
| 189 | */ |
| 190 | public int compareTo(Object o) |
| 191 | { |
| 192 | if (o instanceof ServletHolder) |
| 193 | { |
| 194 | ServletHolder sh= (ServletHolder)o; |
| 195 | if (sh==this) |
| 196 | return 0; |
| 197 | if (sh._initOrder<_initOrder) |
| 198 | return 1; |
| 199 | if (sh._initOrder>_initOrder) |
| 200 | return -1; |
| 201 | |
| 202 | int c=(_className!=null && sh._className!=null)?_className.compareTo(sh._className):0; |
| 203 | if (c==0) |
| 204 | c=_name.compareTo(sh._name); |
| 205 | return c; |
| 206 | } |
| 207 | return 1; |
| 208 | } |
| 209 | |
| 210 | /* ------------------------------------------------------------ */ |
| 211 | public boolean equals(Object o) |
| 212 | { |
| 213 | return compareTo(o)==0; |
| 214 | } |
| 215 | |
| 216 | /* ------------------------------------------------------------ */ |
| 217 | public int hashCode() |
| 218 | { |
| 219 | return _name==null?System.identityHashCode(this):_name.hashCode(); |
| 220 | } |
| 221 | |
| 222 | /* ------------------------------------------------------------ */ |
| 223 | /** Link a user role. |
| 224 | * Translate the role name used by a servlet, to the link name |
| 225 | * used by the container. |
| 226 | * @param name The role name as used by the servlet |
| 227 | * @param link The role name as used by the container. |
| 228 | */ |
| 229 | public synchronized void setUserRoleLink(String name,String link) |
| 230 | { |
| 231 | if (_roleMap==null) |
| 232 | _roleMap=new HashMap<String, String>(); |
| 233 | _roleMap.put(name,link); |
| 234 | } |
| 235 | |
| 236 | /* ------------------------------------------------------------ */ |
| 237 | /** get a user role link. |
| 238 | * @param name The name of the role |
| 239 | * @return The name as translated by the link. If no link exists, |
| 240 | * the name is returned. |
| 241 | */ |
| 242 | public String getUserRoleLink(String name) |
| 243 | { |
| 244 | if (_roleMap==null) |
| 245 | return name; |
| 246 | String link= _roleMap.get(name); |
| 247 | return (link==null)?name:link; |
| 248 | } |
| 249 | |
| 250 | /* ------------------------------------------------------------ */ |
| 251 | public Map<String, String> getRoleMap() |
| 252 | { |
| 253 | return _roleMap == null? NO_MAPPED_ROLES : _roleMap; |
| 254 | } |
| 255 | |
| 256 | /* ------------------------------------------------------------ */ |
| 257 | /** |
| 258 | * @return Returns the forcedPath. |
| 259 | */ |
| 260 | public String getForcedPath() |
| 261 | { |
| 262 | return _forcedPath; |
| 263 | } |
| 264 | |
| 265 | /* ------------------------------------------------------------ */ |
| 266 | /** |
| 267 | * @param forcedPath The forcedPath to set. |
| 268 | */ |
| 269 | public void setForcedPath(String forcedPath) |
| 270 | { |
| 271 | _forcedPath = forcedPath; |
| 272 | } |
| 273 | |
| 274 | public boolean isEnabled() |
| 275 | { |
| 276 | return _enabled; |
| 277 | } |
| 278 | |
| 279 | |
| 280 | public void setEnabled(boolean enabled) |
| 281 | { |
| 282 | _enabled = enabled; |
| 283 | } |
| 284 | |
| 285 | |
| 286 | /* ------------------------------------------------------------ */ |
| 287 | public void doStart() |
| 288 | throws Exception |
| 289 | { |
| 290 | _unavailable=0; |
| 291 | if (!_enabled) |
| 292 | return; |
| 293 | |
| 294 | |
| 295 | //check servlet has a class (ie is not a preliminary registration). If preliminary, fail startup. |
| 296 | try |
| 297 | { |
| 298 | super.doStart(); |
| 299 | } |
| 300 | catch (UnavailableException ue) |
| 301 | { |
| 302 | makeUnavailable(ue); |
| 303 | if (_servletHandler.isStartWithUnavailable()) |
| 304 | { |
| 305 | LOG.ignore(ue); |
| 306 | return; |
| 307 | } |
| 308 | else |
| 309 | throw ue; |
| 310 | } |
| 311 | |
| 312 | |
| 313 | //servlet is not an instance of javax.servlet.Servlet |
| 314 | try |
| 315 | { |
| 316 | checkServletType(); |
| 317 | } |
| 318 | catch (UnavailableException ue) |
| 319 | { |
| 320 | makeUnavailable(ue); |
| 321 | if (_servletHandler.isStartWithUnavailable()) |
| 322 | { |
| 323 | LOG.ignore(ue); |
| 324 | return; |
| 325 | } |
| 326 | else |
| 327 | throw ue; |
| 328 | } |
| 329 | |
| 330 | |
| 331 | _identityService = _servletHandler.getIdentityService(); |
| 332 | if (_identityService!=null && _runAsRole!=null) |
| 333 | _runAsToken=_identityService.newRunAsToken(_runAsRole); |
| 334 | |
| 335 | _config=new Config(); |
| 336 | |
| 337 | if (_class!=null && javax.servlet.SingleThreadModel.class.isAssignableFrom(_class)) |
| 338 | _servlet = new SingleThreadedWrapper(); |
| 339 | |
| 340 | if (_extInstance || _initOnStartup) |
| 341 | { |
| 342 | try |
| 343 | { |
| 344 | initServlet(); |
| 345 | } |
| 346 | catch(Exception e) |
| 347 | { |
| 348 | if (_servletHandler.isStartWithUnavailable()) |
| 349 | LOG.ignore(e); |
| 350 | else |
| 351 | throw e; |
| 352 | } |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | /* ------------------------------------------------------------ */ |
| 357 | public void doStop() |
| 358 | throws Exception |
| 359 | { |
| 360 | Object old_run_as = null; |
| 361 | if (_servlet!=null) |
| 362 | { |
| 363 | try |
| 364 | { |
| 365 | if (_identityService!=null) |
| 366 | old_run_as=_identityService.setRunAs(_identityService.getSystemUserIdentity(),_runAsToken); |
| 367 | |
| 368 | destroyInstance(_servlet); |
| 369 | } |
| 370 | catch (Exception e) |
| 371 | { |
| 372 | LOG.warn(e); |
| 373 | } |
| 374 | finally |
| 375 | { |
| 376 | if (_identityService!=null) |
| 377 | _identityService.unsetRunAs(old_run_as); |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | if (!_extInstance) |
| 382 | _servlet=null; |
| 383 | |
| 384 | _config=null; |
| 385 | } |
| 386 | |
| 387 | /* ------------------------------------------------------------ */ |
| 388 | public void destroyInstance (Object o) |
| 389 | throws Exception |
| 390 | { |
| 391 | if (o==null) |
| 392 | return; |
| 393 | Servlet servlet = ((Servlet)o); |
| 394 | getServletHandler().destroyServlet(servlet); |
| 395 | servlet.destroy(); |
| 396 | } |
| 397 | |
| 398 | /* ------------------------------------------------------------ */ |
| 399 | /** Get the servlet. |
| 400 | * @return The servlet |
| 401 | */ |
| 402 | public synchronized Servlet getServlet() |
| 403 | throws ServletException |
| 404 | { |
| 405 | // Handle previous unavailability |
| 406 | if (_unavailable!=0) |
| 407 | { |
| 408 | if (_unavailable<0 || _unavailable>0 && System.currentTimeMillis()<_unavailable) |
| 409 | throw _unavailableEx; |
| 410 | _unavailable=0; |
| 411 | _unavailableEx=null; |
| 412 | } |
| 413 | |
| 414 | if (_servlet==null) |
| 415 | initServlet(); |
| 416 | return _servlet; |
| 417 | } |
| 418 | |
| 419 | /* ------------------------------------------------------------ */ |
| 420 | /** Get the servlet instance (no initialization done). |
| 421 | * @return The servlet or null |
| 422 | */ |
| 423 | public Servlet getServletInstance() |
| 424 | { |
| 425 | return _servlet; |
| 426 | } |
| 427 | |
| 428 | /* ------------------------------------------------------------ */ |
| 429 | /** |
| 430 | * Check to ensure class of servlet is acceptable. |
| 431 | * @throws UnavailableException |
| 432 | */ |
| 433 | public void checkServletType () |
| 434 | throws UnavailableException |
| 435 | { |
| 436 | if (_class==null || !javax.servlet.Servlet.class.isAssignableFrom(_class)) |
| 437 | { |
| 438 | throw new UnavailableException("Servlet "+_class+" is not a javax.servlet.Servlet"); |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | /* ------------------------------------------------------------ */ |
| 443 | /** |
| 444 | * @return true if the holder is started and is not unavailable |
| 445 | */ |
| 446 | public boolean isAvailable() |
| 447 | { |
| 448 | if (isStarted()&& _unavailable==0) |
| 449 | return true; |
| 450 | try |
| 451 | { |
| 452 | getServlet(); |
| 453 | } |
| 454 | catch(Exception e) |
| 455 | { |
| 456 | LOG.ignore(e); |
| 457 | } |
| 458 | |
| 459 | return isStarted()&& _unavailable==0; |
| 460 | } |
| 461 | |
| 462 | /* ------------------------------------------------------------ */ |
| 463 | private void makeUnavailable(UnavailableException e) |
| 464 | { |
| 465 | if (_unavailableEx==e && _unavailable!=0) |
| 466 | return; |
| 467 | |
| 468 | _servletHandler.getServletContext().log("unavailable",e); |
| 469 | |
| 470 | _unavailableEx=e; |
| 471 | _unavailable=-1; |
| 472 | if (e.isPermanent()) |
| 473 | _unavailable=-1; |
| 474 | else |
| 475 | { |
| 476 | if (_unavailableEx.getUnavailableSeconds()>0) |
| 477 | _unavailable=System.currentTimeMillis()+1000*_unavailableEx.getUnavailableSeconds(); |
| 478 | else |
| 479 | _unavailable=System.currentTimeMillis()+5000; // TODO configure |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | /* ------------------------------------------------------------ */ |
| 484 | |
| 485 | private void makeUnavailable(final Throwable e) |
| 486 | { |
| 487 | if (e instanceof UnavailableException) |
| 488 | makeUnavailable((UnavailableException)e); |
| 489 | else |
| 490 | { |
| 491 | ServletContext ctx = _servletHandler.getServletContext(); |
| 492 | if (ctx==null) |
| 493 | LOG.info("unavailable",e); |
| 494 | else |
| 495 | ctx.log("unavailable",e); |
| 496 | _unavailableEx=new UnavailableException(String.valueOf(e),-1) |
| 497 | { |
| 498 | { |
| 499 | initCause(e); |
| 500 | } |
| 501 | }; |
| 502 | _unavailable=-1; |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | /* ------------------------------------------------------------ */ |
| 507 | private void initServlet() |
| 508 | throws ServletException |
| 509 | { |
| 510 | Object old_run_as = null; |
| 511 | try |
| 512 | { |
| 513 | if (_servlet==null) |
| 514 | _servlet=newInstance(); |
| 515 | if (_config==null) |
| 516 | _config=new Config(); |
| 517 | |
| 518 | // Handle run as |
| 519 | if (_identityService!=null) |
| 520 | { |
| 521 | old_run_as=_identityService.setRunAs(_identityService.getSystemUserIdentity(),_runAsToken); |
| 522 | } |
| 523 | |
| 524 | // Handle configuring servlets that implement org.apache.jasper.servlet.JspServlet |
| 525 | if (isJspServlet()) |
| 526 | { |
| 527 | initJspServlet(); |
| 528 | } |
| 529 | |
| 530 | initMultiPart(); |
| 531 | |
| 532 | _servlet.init(_config); |
| 533 | } |
| 534 | catch (UnavailableException e) |
| 535 | { |
| 536 | makeUnavailable(e); |
| 537 | _servlet=null; |
| 538 | _config=null; |
| 539 | throw e; |
| 540 | } |
| 541 | catch (ServletException e) |
| 542 | { |
| 543 | makeUnavailable(e.getCause()==null?e:e.getCause()); |
| 544 | _servlet=null; |
| 545 | _config=null; |
| 546 | throw e; |
| 547 | } |
| 548 | catch (Exception e) |
| 549 | { |
| 550 | makeUnavailable(e); |
| 551 | _servlet=null; |
| 552 | _config=null; |
| 553 | throw new ServletException(this.toString(),e); |
| 554 | } |
| 555 | finally |
| 556 | { |
| 557 | // pop run-as role |
| 558 | if (_identityService!=null) |
| 559 | _identityService.unsetRunAs(old_run_as); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | |
| 564 | /* ------------------------------------------------------------ */ |
| 565 | /** |
| 566 | * @throws Exception |
| 567 | */ |
| 568 | protected void initJspServlet () throws Exception |
| 569 | { |
| 570 | ContextHandler ch = ((ContextHandler.Context)getServletHandler().getServletContext()).getContextHandler(); |
| 571 | |
| 572 | /* Set the webapp's classpath for Jasper */ |
| 573 | ch.setAttribute("org.apache.catalina.jsp_classpath", ch.getClassPath()); |
| 574 | |
| 575 | /* Set the system classpath for Jasper */ |
| 576 | setInitParameter("com.sun.appserv.jsp.classpath", Loader.getClassPath(ch.getClassLoader().getParent())); |
| 577 | |
| 578 | /* Set up other classpath attribute */ |
| 579 | if ("?".equals(getInitParameter("classpath"))) |
| 580 | { |
| 581 | String classpath = ch.getClassPath(); |
| 582 | LOG.debug("classpath=" + classpath); |
| 583 | if (classpath != null) |
| 584 | setInitParameter("classpath", classpath); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /* ------------------------------------------------------------ */ |
| 589 | /** |
| 590 | * Register a ServletRequestListener that will ensure tmp multipart |
| 591 | * files are deleted when the request goes out of scope. |
| 592 | * |
| 593 | * @throws Exception |
| 594 | */ |
| 595 | protected void initMultiPart () throws Exception |
| 596 | { |
| 597 | //if this servlet can handle multipart requests, ensure tmp files will be |
| 598 | //cleaned up correctly |
| 599 | if (((Registration)getRegistration()).getMultipartConfig() != null) |
| 600 | { |
| 601 | //Register a listener to delete tmp files that are created as a result of this |
| 602 | //servlet calling Request.getPart() or Request.getParts() |
| 603 | ContextHandler ch = ((ContextHandler.Context)getServletHandler().getServletContext()).getContextHandler(); |
| 604 | ch.addEventListener(new Request.MultiPartCleanerListener()); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | /* ------------------------------------------------------------ */ |
| 609 | /** |
| 610 | * @see org.eclipse.jetty.server.UserIdentity.Scope#getContextPath() |
| 611 | */ |
| 612 | public String getContextPath() |
| 613 | { |
| 614 | return _config.getServletContext().getContextPath(); |
| 615 | } |
| 616 | |
| 617 | /* ------------------------------------------------------------ */ |
| 618 | /** |
| 619 | * @see org.eclipse.jetty.server.UserIdentity.Scope#getRoleRefMap() |
| 620 | */ |
| 621 | public Map<String, String> getRoleRefMap() |
| 622 | { |
| 623 | return _roleMap; |
| 624 | } |
| 625 | |
| 626 | /* ------------------------------------------------------------ */ |
| 627 | public String getRunAsRole() |
| 628 | { |
| 629 | return _runAsRole; |
| 630 | } |
| 631 | |
| 632 | /* ------------------------------------------------------------ */ |
| 633 | public void setRunAsRole(String role) |
| 634 | { |
| 635 | _runAsRole = role; |
| 636 | } |
| 637 | |
| 638 | /* ------------------------------------------------------------ */ |
| 639 | /** Service a request with this servlet. |
| 640 | */ |
| 641 | public void handle(Request baseRequest, |
| 642 | ServletRequest request, |
| 643 | ServletResponse response) |
| 644 | throws ServletException, |
| 645 | UnavailableException, |
| 646 | IOException |
| 647 | { |
| 648 | if (_class==null) |
| 649 | throw new UnavailableException("Servlet Not Initialized"); |
| 650 | |
| 651 | Servlet servlet=_servlet; |
| 652 | synchronized(this) |
| 653 | { |
| 654 | if (!isStarted()) |
| 655 | throw new UnavailableException("Servlet not initialized", -1); |
| 656 | if (_unavailable!=0 || !_initOnStartup) |
| 657 | servlet=getServlet(); |
| 658 | if (servlet==null) |
| 659 | throw new UnavailableException("Could not instantiate "+_class); |
| 660 | } |
| 661 | |
| 662 | // Service the request |
| 663 | boolean servlet_error=true; |
| 664 | Object old_run_as = null; |
| 665 | boolean suspendable = baseRequest.isAsyncSupported(); |
| 666 | try |
| 667 | { |
| 668 | // Handle aliased path |
| 669 | if (_forcedPath!=null) |
| 670 | // TODO complain about poor naming to the Jasper folks |
| 671 | request.setAttribute("org.apache.catalina.jsp_file",_forcedPath); |
| 672 | |
| 673 | // Handle run as |
| 674 | if (_identityService!=null) |
| 675 | old_run_as=_identityService.setRunAs(baseRequest.getResolvedUserIdentity(),_runAsToken); |
| 676 | |
| 677 | if (!isAsyncSupported()) |
| 678 | baseRequest.setAsyncSupported(false); |
| 679 | |
| 680 | MultipartConfigElement mpce = ((Registration)getRegistration()).getMultipartConfig(); |
| 681 | if (mpce != null) |
| 682 | request.setAttribute(Request.__MULTIPART_CONFIG_ELEMENT, mpce); |
| 683 | |
| 684 | servlet.service(request,response); |
| 685 | servlet_error=false; |
| 686 | } |
| 687 | catch(UnavailableException e) |
| 688 | { |
| 689 | makeUnavailable(e); |
| 690 | throw _unavailableEx; |
| 691 | } |
| 692 | finally |
| 693 | { |
| 694 | baseRequest.setAsyncSupported(suspendable); |
| 695 | |
| 696 | // pop run-as role |
| 697 | if (_identityService!=null) |
| 698 | _identityService.unsetRunAs(old_run_as); |
| 699 | |
| 700 | // Handle error params. |
| 701 | if (servlet_error) |
| 702 | request.setAttribute("javax.servlet.error.servlet_name",getName()); |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | |
| 707 | /* ------------------------------------------------------------ */ |
| 708 | private boolean isJspServlet () |
| 709 | { |
| 710 | if (_servlet == null) |
| 711 | return false; |
| 712 | |
| 713 | Class c = _servlet.getClass(); |
| 714 | |
| 715 | boolean result = false; |
| 716 | while (c != null && !result) |
| 717 | { |
| 718 | result = isJspServlet(c.getName()); |
| 719 | c = c.getSuperclass(); |
| 720 | } |
| 721 | |
| 722 | return result; |
| 723 | } |
| 724 | |
| 725 | |
| 726 | /* ------------------------------------------------------------ */ |
| 727 | private boolean isJspServlet (String classname) |
| 728 | { |
| 729 | if (classname == null) |
| 730 | return false; |
| 731 | return ("org.apache.jasper.servlet.JspServlet".equals(classname)); |
| 732 | } |
| 733 | |
| 734 | |
| 735 | /* ------------------------------------------------------------ */ |
| 736 | /* ------------------------------------------------------------ */ |
| 737 | /* ------------------------------------------------------------ */ |
| 738 | protected class Config extends HolderConfig implements ServletConfig |
| 739 | { |
| 740 | /* -------------------------------------------------------- */ |
| 741 | public String getServletName() |
| 742 | { |
| 743 | return getName(); |
| 744 | } |
| 745 | |
| 746 | } |
| 747 | |
| 748 | /* -------------------------------------------------------- */ |
| 749 | /* -------------------------------------------------------- */ |
| 750 | /* -------------------------------------------------------- */ |
| 751 | public class Registration extends HolderRegistration implements ServletRegistration.Dynamic |
| 752 | { |
| 753 | protected MultipartConfigElement _multipartConfig; |
| 754 | |
| 755 | public Set<String> addMapping(String... urlPatterns) |
| 756 | { |
| 757 | illegalStateIfContextStarted(); |
| 758 | Set<String> clash=null; |
| 759 | for (String pattern : urlPatterns) |
| 760 | { |
| 761 | ServletMapping mapping = _servletHandler.getServletMapping(pattern); |
| 762 | if (mapping!=null) |
| 763 | { |
| 764 | //if the servlet mapping was from a default descriptor, then allow it to be overridden |
| 765 | if (!mapping.isDefault()) |
| 766 | { |
| 767 | if (clash==null) |
| 768 | clash=new HashSet<String>(); |
| 769 | clash.add(pattern); |
| 770 | } |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | //if there were any clashes amongst the urls, return them |
| 775 | if (clash!=null) |
| 776 | return clash; |
| 777 | |
| 778 | //otherwise apply all of them |
| 779 | ServletMapping mapping = new ServletMapping(); |
| 780 | mapping.setServletName(ServletHolder.this.getName()); |
| 781 | mapping.setPathSpecs(urlPatterns); |
| 782 | _servletHandler.addServletMapping(mapping); |
| 783 | |
| 784 | return Collections.emptySet(); |
| 785 | } |
| 786 | |
| 787 | public Collection<String> getMappings() |
| 788 | { |
| 789 | ServletMapping[] mappings =_servletHandler.getServletMappings(); |
| 790 | List<String> patterns=new ArrayList<String>(); |
| 791 | if (mappings!=null) |
| 792 | { |
| 793 | for (ServletMapping mapping : mappings) |
| 794 | { |
| 795 | if (!mapping.getServletName().equals(getName())) |
| 796 | continue; |
| 797 | String[] specs=mapping.getPathSpecs(); |
| 798 | if (specs!=null && specs.length>0) |
| 799 | patterns.addAll(Arrays.asList(specs)); |
| 800 | } |
| 801 | } |
| 802 | return patterns; |
| 803 | } |
| 804 | |
| 805 | @Override |
| 806 | public String getRunAsRole() |
| 807 | { |
| 808 | return _runAsRole; |
| 809 | } |
| 810 | |
| 811 | @Override |
| 812 | public void setLoadOnStartup(int loadOnStartup) |
| 813 | { |
| 814 | illegalStateIfContextStarted(); |
| 815 | ServletHolder.this.setInitOrder(loadOnStartup); |
| 816 | } |
| 817 | |
| 818 | public int getInitOrder() |
| 819 | { |
| 820 | return ServletHolder.this.getInitOrder(); |
| 821 | } |
| 822 | |
| 823 | @Override |
| 824 | public void setMultipartConfig(MultipartConfigElement element) |
| 825 | { |
| 826 | _multipartConfig = element; |
| 827 | } |
| 828 | |
| 829 | public MultipartConfigElement getMultipartConfig() |
| 830 | { |
| 831 | return _multipartConfig; |
| 832 | } |
| 833 | |
| 834 | @Override |
| 835 | public void setRunAsRole(String role) |
| 836 | { |
| 837 | _runAsRole = role; |
| 838 | } |
| 839 | |
| 840 | @Override |
| 841 | public Set<String> setServletSecurity(ServletSecurityElement securityElement) |
| 842 | { |
| 843 | return _servletHandler.setServletSecurity(this, securityElement); |
| 844 | } |
| 845 | } |
| 846 | |
| 847 | public ServletRegistration.Dynamic getRegistration() |
| 848 | { |
| 849 | if (_registration == null) |
| 850 | _registration = new Registration(); |
| 851 | return _registration; |
| 852 | } |
| 853 | |
| 854 | /* -------------------------------------------------------- */ |
| 855 | /* -------------------------------------------------------- */ |
| 856 | /* -------------------------------------------------------- */ |
| 857 | private class SingleThreadedWrapper implements Servlet |
| 858 | { |
| 859 | Stack<Servlet> _stack=new Stack<Servlet>(); |
| 860 | |
| 861 | public void destroy() |
| 862 | { |
| 863 | synchronized(this) |
| 864 | { |
| 865 | while(_stack.size()>0) |
| 866 | try { (_stack.pop()).destroy(); } catch (Exception e) { LOG.warn(e); } |
| 867 | } |
| 868 | } |
| 869 | |
| 870 | public ServletConfig getServletConfig() |
| 871 | { |
| 872 | return _config; |
| 873 | } |
| 874 | |
| 875 | public String getServletInfo() |
| 876 | { |
| 877 | return null; |
| 878 | } |
| 879 | |
| 880 | public void init(ServletConfig config) throws ServletException |
| 881 | { |
| 882 | synchronized(this) |
| 883 | { |
| 884 | if(_stack.size()==0) |
| 885 | { |
| 886 | try |
| 887 | { |
| 888 | Servlet s = newInstance(); |
| 889 | s.init(config); |
| 890 | _stack.push(s); |
| 891 | } |
| 892 | catch (ServletException e) |
| 893 | { |
| 894 | throw e; |
| 895 | } |
| 896 | catch (Exception e) |
| 897 | { |
| 898 | throw new ServletException(e); |
| 899 | } |
| 900 | } |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException |
| 905 | { |
| 906 | Servlet s; |
| 907 | synchronized(this) |
| 908 | { |
| 909 | if(_stack.size()>0) |
| 910 | s=(Servlet)_stack.pop(); |
| 911 | else |
| 912 | { |
| 913 | try |
| 914 | { |
| 915 | s = newInstance(); |
| 916 | s.init(_config); |
| 917 | } |
| 918 | catch (ServletException e) |
| 919 | { |
| 920 | throw e; |
| 921 | } |
| 922 | catch (Exception e) |
| 923 | { |
| 924 | throw new ServletException(e); |
| 925 | } |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | try |
| 930 | { |
| 931 | s.service(req,res); |
| 932 | } |
| 933 | finally |
| 934 | { |
| 935 | synchronized(this) |
| 936 | { |
| 937 | _stack.push(s); |
| 938 | } |
| 939 | } |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | /* ------------------------------------------------------------ */ |
| 944 | /** |
| 945 | * @return the newly created Servlet instance |
| 946 | * @throws ServletException |
| 947 | * @throws IllegalAccessException |
| 948 | * @throws InstantiationException |
| 949 | */ |
| 950 | protected Servlet newInstance() throws ServletException, IllegalAccessException, InstantiationException |
| 951 | { |
| 952 | try |
| 953 | { |
| 954 | ServletContext ctx = getServletHandler().getServletContext(); |
| 955 | if (ctx==null) |
| 956 | return getHeldClass().newInstance(); |
| 957 | return ((ServletContextHandler.Context)ctx).createServlet(getHeldClass()); |
| 958 | } |
| 959 | catch (ServletException se) |
| 960 | { |
| 961 | Throwable cause = se.getRootCause(); |
| 962 | if (cause instanceof InstantiationException) |
| 963 | throw (InstantiationException)cause; |
| 964 | if (cause instanceof IllegalAccessException) |
| 965 | throw (IllegalAccessException)cause; |
| 966 | throw se; |
| 967 | } |
| 968 | } |
| 969 | } |