1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
| /*
* 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.catalina.authenticator;
import java.io.IOException;
import java.io.InputStream;
import java.security.Principal;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Locale;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import org.apache.catalina.Globals;
import org.apache.catalina.Realm;
import org.apache.catalina.Session;
import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.Response;
import org.apache.catalina.deploy.LoginConfig;
import org.apache.coyote.ActionCode;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.buf.ByteChunk;
import org.apache.tomcat.util.buf.CharChunk;
import org.apache.tomcat.util.buf.MessageBytes;
import org.apache.tomcat.util.http.MimeHeaders;
/**
* An <b>Authenticator</b> and <b>Valve</b> implementation of FORM BASED
* Authentication, as described in the Servlet API Specification, Version 2.2.
*
* @author Craig R. McClanahan
* @author Remy Maucherat
* @version $Revision: 892804 $ $Date: 2009-12-21 13:56:09 +0100 (Mon, 21 Dec 2009) $
*/
public class MyFormAuthenticator
extends AuthenticatorBase {
private static Log log = LogFactory.getLog(MyFormAuthenticator.class);
// ----------------------------------------------------- Instance Variables
/**
* Descriptive information about this implementation.
*/
protected static final String info =
"org.apache.catalina.authenticator.FormAuthenticator/1.0";
/**
* Character encoding to use to read the username and password parameters
* from the request. If not set, the encoding of the request body will be
* used.
*/
protected String characterEncoding = null;
// ------------------------------------------------------------- Properties
/**
* Return descriptive information about this Valve implementation.
*/
public String getInfo() {
return (info);
}
/**
* Return the character encoding to use to read the username and password.
*/
public String getCharacterEncoding() {
return characterEncoding;
}
/**
* Set the character encoding to be used to read the username and password.
*/
public void setCharacterEncoding(String encoding) {
characterEncoding = encoding;
}
// --------------------------------------------------------- Public Methods
/**
* Authenticate the user making this request, based on the specified
* login configuration. Return <code>true</code> if any specified
* constraint has been satisfied, or <code>false</code> if we have
* created a response challenge already.
*
* @param request Request we are processing
* @param response Response we are creating
* @param config Login configuration describing how authentication
* should be performed
*
* @exception IOException if an input/output error occurs
*/
public boolean authenticate(Request request,
Response response,
LoginConfig config)
throws IOException {
/** DEBUT DE LA MODIFICATION **/
String formUser = request.getParameter(Constants.FORM_USERNAME);
String formPassword = request.getParameter(Constants.FORM_PASSWORD);
String formAuthenticate = request.getParameter("j_authenticate");
if(formUser!=null && !formUser.equals("") && formPassword!=null && !formPassword.equals("") && formAuthenticate!=null && formAuthenticate.equals("true")){
Session session = request.getSessionInternal(true);
Principal principal = null;
principal = context.getRealm().authenticate(formUser, formPassword);
if (principal != null) {
log.debug("Authenticate OK ! Continue");
session.setNote(Constants.FORM_PRINCIPAL_NOTE, principal);
if (!matchRequest(request)) {
register(request, response, principal, Constants.FORM_METHOD, formUser, formPassword);
return (true);
}
} else {
log.debug("Go to error page");
forwardToErrorPage(request, response, config);
return (false);
}
}
/** FIN DE LA MODIFICATION **/
// References to objects we will need later
Session session = null;
// Have we already authenticated someone?
Principal principal = request.getUserPrincipal();
String ssoId = (String) request.getNote(Constants.REQ_SSOID_NOTE);
if (principal != null) {
if (log.isDebugEnabled())
log.debug("Already authenticated '" +
principal.getName() + "'");
// Associate the session with any existing SSO session
if (ssoId != null)
associate(ssoId, request.getSessionInternal(true));
return (true);
}
// Is there an SSO session against which we can try to reauthenticate?
if (ssoId != null) {
if (log.isDebugEnabled())
log.debug("SSO Id " + ssoId + " set; attempting " +
"reauthentication");
// Try to reauthenticate using data cached by SSO. If this fails,
// either the original SSO logon was of DIGEST or SSL (which
// we can't reauthenticate ourselves because there is no
// cached username and password), or the realm denied
// the user's reauthentication for some reason.
// In either case we have to prompt the user for a logon */
if (reauthenticateFromSSO(ssoId, request))
return true;
}
// Have we authenticated this user before but have caching disabled?
if (!cache) {
session = request.getSessionInternal(true);
if (log.isDebugEnabled())
log.debug("Checking for reauthenticate in session " + session);
String username =
(String) session.getNote(Constants.SESS_USERNAME_NOTE);
String password =
(String) session.getNote(Constants.SESS_PASSWORD_NOTE);
if ((username != null) && (password != null)) {
if (log.isDebugEnabled())
log.debug("Reauthenticating username '" + username + "'");
principal =
context.getRealm().authenticate(username, password);
if (principal != null) {
session.setNote(Constants.FORM_PRINCIPAL_NOTE, principal);
if (!matchRequest(request)) {
register(request, response, principal,
Constants.FORM_METHOD,
username, password);
return (true);
}
}
if (log.isDebugEnabled())
log.debug("Reauthentication failed, proceed normally");
}
}
// Is this the re-submit of the original request URI after successful
// authentication? If so, forward the *original* request instead.
if (matchRequest(request)) {
session = request.getSessionInternal(true);
if (log.isDebugEnabled())
log.debug("Restore request from session '"
+ session.getIdInternal()
+ "'");
principal = (Principal)
session.getNote(Constants.FORM_PRINCIPAL_NOTE);
register(request, response, principal, Constants.FORM_METHOD,
(String) session.getNote(Constants.SESS_USERNAME_NOTE),
(String) session.getNote(Constants.SESS_PASSWORD_NOTE));
// If we're caching principals we no longer need the username
// and password in the session, so remove them
if (cache) {
session.removeNote(Constants.SESS_USERNAME_NOTE);
session.removeNote(Constants.SESS_PASSWORD_NOTE);
}
if (restoreRequest(request, session)) {
if (log.isDebugEnabled())
log.debug("Proceed to restored request");
return (true);
} else {
if (log.isDebugEnabled())
log.debug("Restore of original request failed");
response.sendError(HttpServletResponse.SC_BAD_REQUEST);
return (false);
}
}
// Acquire references to objects we will need to evaluate
MessageBytes uriMB = MessageBytes.newInstance();
CharChunk uriCC = uriMB.getCharChunk();
uriCC.setLimit(-1);
String contextPath = request.getContextPath();
String requestURI = request.getDecodedRequestURI();
response.setContext(request.getContext());
log.debug("contextPath : "+contextPath);
log.debug("requestURI : "+requestURI);
log.debug("request.getParameter(Constants.FORM_USERNAME) : "+request.getParameter(Constants.FORM_USERNAME));
log.debug("request.getParameter(Constants.FORM_PASSWORD) : "+request.getParameter(Constants.FORM_PASSWORD));
// Is this the action request from the login page?
boolean loginAction =
requestURI.startsWith(contextPath) &&
requestURI.endsWith(Constants.FORM_ACTION);
// No -- Save this request and redirect to the form login page
if (!loginAction) {
session = request.getSessionInternal(true);
if (log.isDebugEnabled())
log.debug("Save request in session '" + session.getIdInternal() + "'");
try {
saveRequest(request, session);
} catch (IOException ioe) {
log.debug("Request body too big to save during authentication");
response.sendError(HttpServletResponse.SC_FORBIDDEN,
sm.getString("authenticator.requestBodyTooBig"));
return (false);
}
forwardToLoginPage(request, response, config);
return (false);
}
// Yes -- Validate the specified credentials and redirect
// to the error page if they are not correct
Realm realm = context.getRealm();
if (characterEncoding != null) {
request.setCharacterEncoding(characterEncoding);
}
String username = request.getParameter(Constants.FORM_USERNAME);
String password = request.getParameter(Constants.FORM_PASSWORD);
if (log.isDebugEnabled())
log.debug("Authenticating username '" + username + "'");
principal = realm.authenticate(username, password);
if (principal == null) {
forwardToErrorPage(request, response, config);
return (false);
}
if (log.isDebugEnabled())
log.debug("Authentication of '" + username + "' was successful");
if (session == null)
session = request.getSessionInternal(false);
if (session == null) {
if (containerLog.isDebugEnabled())
containerLog.debug
("User took so long to log on the session expired");
response.sendError(HttpServletResponse.SC_REQUEST_TIMEOUT,
sm.getString("authenticator.sessionExpired"));
return (false);
}
// Save the authenticated Principal in our session
session.setNote(Constants.FORM_PRINCIPAL_NOTE, principal);
// Save the username and password as well
session.setNote(Constants.SESS_USERNAME_NOTE, username);
session.setNote(Constants.SESS_PASSWORD_NOTE, password);
// Redirect the user to the original request URI (which will cause
// the original request to be restored)
requestURI = savedRequestURL(session);
if (log.isDebugEnabled())
log.debug("Redirecting to original '" + requestURI + "'");
if (requestURI == null)
response.sendError(HttpServletResponse.SC_BAD_REQUEST,
sm.getString("authenticator.formlogin"));
else
response.sendRedirect(response.encodeRedirectURL(requestURI));
return (false);
}
// ------------------------------------------------------ Protected Methods
/**
* Called to forward to the login page
*
* @param request Request we are processing
* @param response Response we are creating
* @param config Login configuration describing how authentication
* should be performed
* @throws IOException If the forward to the login page fails and the call
* to {@link HttpServletResponse#sendError(int, String)
* throws an {@link IOException}
*/
protected void forwardToLoginPage(Request request, Response response,
LoginConfig config) throws IOException {
RequestDispatcher disp =
context.getServletContext().getRequestDispatcher
(config.getLoginPage());
try {
disp.forward(request.getRequest(), response.getResponse());
response.finishResponse();
} catch (Throwable t) {
String msg = sm.getString("formAuthenticator.forwardLoginFail");
log.warn(msg, t);
request.setAttribute(Globals.EXCEPTION_ATTR, t);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
msg);
}
}
/**
* Called to forward to the error page
*
* @param request Request we are processing
* @param response Response we are creating
* @param config Login configuration describing how authentication
* should be performed
* @throws IOException If the forward to the error page fails and the call
* to {@link HttpServletResponse#sendError(int, String)
* throws an {@link IOException}
*/
protected void forwardToErrorPage(Request request, Response response,
LoginConfig config) throws IOException {
RequestDispatcher disp =
context.getServletContext().getRequestDispatcher
(config.getErrorPage());
try {
disp.forward(request.getRequest(), response.getResponse());
} catch (Throwable t) {
String msg = sm.getString("formAuthenticator.forwardErrorFail");
log.warn(msg, t);
request.setAttribute(Globals.EXCEPTION_ATTR, t);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
msg);
}
}
/**
* Does this request match the saved one (so that it must be the redirect
* we signalled after successful authentication?
*
* @param request The request to be verified
*/
protected boolean matchRequest(Request request) {
// Has a session been created?
Session session = request.getSessionInternal(false);
if (session == null)
return (false);
// Is there a saved request?
SavedRequest sreq = (SavedRequest)
session.getNote(Constants.FORM_REQUEST_NOTE);
if (sreq == null)
return (false);
// Is there a saved principal?
if (session.getNote(Constants.FORM_PRINCIPAL_NOTE) == null)
return (false);
// Does the request URI match?
String requestURI = request.getRequestURI();
if (requestURI == null)
return (false);
return (requestURI.equals(sreq.getRequestURI()));
}
/**
* Restore the original request from information stored in our session.
* If the original request is no longer present (because the session
* timed out), return <code>false</code>; otherwise, return
* <code>true</code>.
*
* @param request The request to be restored
* @param session The session containing the saved information
*/
protected boolean restoreRequest(Request request, Session session)
throws IOException {
// Retrieve and remove the SavedRequest object from our session
SavedRequest saved = (SavedRequest)
session.getNote(Constants.FORM_REQUEST_NOTE);
session.removeNote(Constants.FORM_REQUEST_NOTE);
session.removeNote(Constants.FORM_PRINCIPAL_NOTE);
if (saved == null)
return (false);
// Modify our current request to reflect the original one
request.clearCookies();
Iterator cookies = saved.getCookies();
while (cookies.hasNext()) {
request.addCookie((Cookie) cookies.next());
}
MimeHeaders rmh = request.getCoyoteRequest().getMimeHeaders();
rmh.recycle();
boolean cachable = "GET".equalsIgnoreCase(saved.getMethod()) ||
"HEAD".equalsIgnoreCase(saved.getMethod());
Iterator names = saved.getHeaderNames();
while (names.hasNext()) {
String name = (String) names.next();
// The browser isn't expecting this conditional response now.
// Assuming that it can quietly recover from an unexpected 412.
// BZ 43687
if(!("If-Modified-Since".equalsIgnoreCase(name) ||
(cachable && "If-None-Match".equalsIgnoreCase(name)))) {
Iterator values = saved.getHeaderValues(name);
while (values.hasNext()) {
rmh.addValue(name).setString( (String)values.next() );
}
}
}
request.clearLocales();
Iterator locales = saved.getLocales();
while (locales.hasNext()) {
request.addLocale((Locale) locales.next());
}
request.getCoyoteRequest().getParameters().recycle();
request.getCoyoteRequest().getParameters().setQueryStringEncoding(
request.getConnector().getURIEncoding());
if ("POST".equalsIgnoreCase(saved.getMethod())) {
ByteChunk body = saved.getBody();
if (body != null) {
request.getCoyoteRequest().action
(ActionCode.ACTION_REQ_SET_BODY_REPLAY, body);
// Set content type
MessageBytes contentType = MessageBytes.newInstance();
//If no content type specified, use default for POST
String savedContentType = saved.getContentType();
if (savedContentType == null) {
savedContentType = "application/x-www-form-urlencoded";
}
contentType.setString(savedContentType);
request.getCoyoteRequest().setContentType(contentType);
}
}
request.getCoyoteRequest().method().setString(saved.getMethod());
request.getCoyoteRequest().queryString().setString
(saved.getQueryString());
request.getCoyoteRequest().requestURI().setString
(saved.getRequestURI());
return (true);
}
/**
* Save the original request information into our session.
*
* @param request The request to be saved
* @param session The session to contain the saved information
* @throws IOException
*/
protected void saveRequest(Request request, Session session)
throws IOException {
// Create and populate a SavedRequest object for this request
SavedRequest saved = new SavedRequest();
Cookie cookies[] = request.getCookies();
if (cookies != null) {
for (int i = 0; i < cookies.length; i++)
saved.addCookie(cookies[i]);
}
Enumeration names = request.getHeaderNames();
while (names.hasMoreElements()) {
String name = (String) names.nextElement();
Enumeration values = request.getHeaders(name);
while (values.hasMoreElements()) {
String value = (String) values.nextElement();
saved.addHeader(name, value);
}
}
Enumeration locales = request.getLocales();
while (locales.hasMoreElements()) {
Locale locale = (Locale) locales.nextElement();
saved.addLocale(locale);
}
if ("POST".equalsIgnoreCase(request.getMethod())) {
ByteChunk body = new ByteChunk();
body.setLimit(request.getConnector().getMaxSavePostSize());
byte[] buffer = new byte[4096];
int bytesRead;
InputStream is = request.getInputStream();
while ( (bytesRead = is.read(buffer) ) >= 0) {
body.append(buffer, 0, bytesRead);
}
saved.setContentType(request.getContentType());
saved.setBody(body);
}
saved.setMethod(request.getMethod());
saved.setQueryString(request.getQueryString());
saved.setRequestURI(request.getRequestURI());
// Stash the SavedRequest in our session for later use
session.setNote(Constants.FORM_REQUEST_NOTE, saved);
}
/**
* Return the request URI (with the corresponding query string, if any)
* from the saved request so that we can redirect to it.
*
* @param session Our current session
*/
protected String savedRequestURL(Session session) {
SavedRequest saved =
(SavedRequest) session.getNote(Constants.FORM_REQUEST_NOTE);
if (saved == null)
return (null);
StringBuffer sb = new StringBuffer(saved.getRequestURI());
if (saved.getQueryString() != null) {
sb.append('?');
sb.append(saved.getQueryString());
}
return (sb.toString());
}
} |
[Tomcat 6] FormRealm et auto-authentification
Répondre avec citation
Envoyé par ZeKiD
Partager