3 * $Id: auth_ntlm.cc,v 1.27 2003/02/04 23:24:42 robertc Exp $
5 * DEBUG: section 29 NTLM Authenticator
6 * AUTHOR: Robert Collins
8 * SQUID Web Proxy Cache http://www.squid-cache.org/
9 * ----------------------------------------------------------
11 * Squid is the result of efforts by numerous individuals from
12 * the Internet community; see the CONTRIBUTORS file for full
13 * details. Many organizations have provided support for Squid's
14 * development; see the SPONSORS file for full details. Squid is
15 * Copyrighted (C) 2001 by the Regents of the University of
16 * California; see the COPYRIGHT file for full details. Squid
17 * incorporates software developed and/or copyrighted by other
18 * sources; see the CREDITS file for full details.
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2 of the License, or
23 * (at your option) any later version.
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
36 /* The functions in this file handle authentication.
37 * They DO NOT perform access control or auditing.
38 * See acl.c for access control and client_side.c for auditing */
42 #include "auth_ntlm.h"
43 #include "authenticate.h"
46 extern AUTHSSETUP authSchemeSetup_ntlm
;
49 authenticateStateFree(authenticateStateData
* r
)
55 static HLPSCB authenticateNTLMHandleReply
;
56 static HLPSCB authenticateNTLMHandleplaceholder
;
57 static AUTHSACTIVE authenticateNTLMActive
;
58 static AUTHSAUTHED authNTLMAuthenticated
;
59 static AUTHSAUTHUSER authenticateNTLMAuthenticateUser
;
60 static AUTHSCONFIGURED authNTLMConfigured
;
61 static AUTHSFIXERR authenticateNTLMFixErrorHeader
;
62 static AUTHSFREE authenticateNTLMFreeUser
;
63 static AUTHSDIRECTION authenticateNTLMDirection
;
64 static AUTHSDECODE authenticateDecodeNTLMAuth
;
65 static AUTHSDUMP authNTLMCfgDump
;
66 static AUTHSFREECONFIG authNTLMFreeConfig
;
67 static AUTHSINIT authNTLMInit
;
68 static AUTHSONCLOSEC authenticateNTLMOnCloseConnection
;
69 static AUTHSCONNLASTHEADER NTLMLastHeader
;
70 static AUTHSUSERNAME authenticateNTLMUsername
;
71 static AUTHSREQFREE authNTLMAURequestFree
;
72 static AUTHSPARSE authNTLMParse
;
73 static AUTHSSTART authenticateNTLMStart
;
74 static AUTHSSTATS authenticateNTLMStats
;
75 static AUTHSSHUTDOWN authNTLMDone
;
77 /* helper callbacks to handle per server state data */
78 static HLPSAVAIL authenticateNTLMHelperServerAvailable
;
79 static HLPSONEQ authenticateNTLMHelperServerOnEmpty
;
81 static statefulhelper
*ntlmauthenticators
= NULL
;
83 CBDATA_TYPE(authenticateStateData
);
85 static int authntlm_initialised
= 0;
87 static MemPool
*ntlm_helper_state_pool
= NULL
;
88 static MemPool
*ntlm_user_pool
= NULL
;
89 static MemPool
*ntlm_request_pool
= NULL
;
90 static MemPool
*ntlm_user_hash_pool
= NULL
;
92 static auth_ntlm_config
*ntlmConfig
= NULL
;
94 static hash_table
*proxy_auth_cache
= NULL
;
105 debug(29, 2) ("authNTLMDone: shutting down NTLM authentication.\n");
106 if (ntlmauthenticators
)
107 helperStatefulShutdown(ntlmauthenticators
);
108 authntlm_initialised
= 0;
111 if (ntlmauthenticators
)
112 helperStatefulFree(ntlmauthenticators
);
113 ntlmauthenticators
= NULL
;
114 if (ntlm_helper_state_pool
) {
115 assert(memPoolInUseCount(ntlm_helper_state_pool
) == 0);
116 memPoolDestroy(&ntlm_helper_state_pool
);
118 if (ntlm_request_pool
) {
119 assert(memPoolInUseCount(ntlm_request_pool
) == 0);
120 memPoolDestroy(&ntlm_request_pool
);
122 if (ntlm_user_pool
) {
123 assert(memPoolInUseCount(ntlm_user_pool
) == 0);
124 memPoolDestroy(&ntlm_user_pool
);
126 debug(29, 2) ("authNTLMDone: NTLM authentication Shutdown.\n");
129 /* free any allocated configuration details */
131 authNTLMFreeConfig(authScheme
* scheme
)
133 if (ntlmConfig
== NULL
)
135 assert(ntlmConfig
== scheme
->scheme_data
);
136 if (ntlmConfig
->authenticate
)
137 wordlistDestroy(&ntlmConfig
->authenticate
);
143 authNTLMCfgDump(StoreEntry
* entry
, const char *name
, authScheme
* scheme
)
145 auth_ntlm_config
*config
= static_cast<auth_ntlm_config
*>(scheme
->scheme_data
);
146 wordlist
*list
= config
->authenticate
;
147 storeAppendPrintf(entry
, "%s %s", name
, "ntlm");
148 while (list
!= NULL
) {
149 storeAppendPrintf(entry
, " %s", list
->key
);
152 storeAppendPrintf(entry
, "\n%s %s children %d\n%s %s max_challenge_reuses %d\n%s %s max_challenge_lifetime %d seconds\n",
153 name
, "ntlm", config
->authenticateChildren
,
154 name
, "ntlm", config
->challengeuses
,
155 name
, "ntlm", (int) config
->challengelifetime
);
160 authNTLMParse(authScheme
* scheme
, int n_configured
, char *param_str
)
162 if (scheme
->scheme_data
== NULL
) {
163 assert(ntlmConfig
== NULL
);
164 /* this is the first param to be found */
165 scheme
->scheme_data
= xmalloc(sizeof(auth_ntlm_config
));
166 memset(scheme
->scheme_data
, 0, sizeof(auth_ntlm_config
));
167 ntlmConfig
= static_cast<auth_ntlm_config
*>(scheme
->scheme_data
);
168 ntlmConfig
->authenticateChildren
= 5;
169 ntlmConfig
->challengeuses
= 0;
170 ntlmConfig
->challengelifetime
= 60;
172 ntlmConfig
= static_cast<auth_ntlm_config
*>(scheme
->scheme_data
);
173 if (strcasecmp(param_str
, "program") == 0) {
174 if (ntlmConfig
->authenticate
)
175 wordlistDestroy(&ntlmConfig
->authenticate
);
176 parse_wordlist(&ntlmConfig
->authenticate
);
177 requirePathnameExists("authparam ntlm program", ntlmConfig
->authenticate
->key
);
178 } else if (strcasecmp(param_str
, "children") == 0) {
179 parse_int(&ntlmConfig
->authenticateChildren
);
180 } else if (strcasecmp(param_str
, "max_challenge_reuses") == 0) {
181 parse_int(&ntlmConfig
->challengeuses
);
182 } else if (strcasecmp(param_str
, "max_challenge_lifetime") == 0) {
183 parse_time_t(&ntlmConfig
->challengelifetime
);
185 debug(28, 0) ("unrecognised ntlm auth scheme parameter '%s'\n", param_str
);
188 * disable client side request pipelining. There is a race with
189 * NTLM when the client sends a second request on an NTLM
190 * connection before the authenticate challenge is sent. With
191 * this patch, the client may fail to authenticate, but squid's
192 * state will be preserved. Caveats: this should be a post-parse
193 * test, but that can wait for the modular parser to be integrated.
195 if (ntlmConfig
->authenticate
)
196 Config
.onoff
.pipeline_prefetch
= 0;
201 authSchemeSetup_ntlm(authscheme_entry_t
* authscheme
)
203 assert(!authntlm_initialised
);
204 authscheme
->Active
= authenticateNTLMActive
;
205 authscheme
->configured
= authNTLMConfigured
;
206 authscheme
->parse
= authNTLMParse
;
207 authscheme
->dump
= authNTLMCfgDump
;
208 authscheme
->requestFree
= authNTLMAURequestFree
;
209 authscheme
->freeconfig
= authNTLMFreeConfig
;
210 authscheme
->init
= authNTLMInit
;
211 authscheme
->authAuthenticate
= authenticateNTLMAuthenticateUser
;
212 authscheme
->authenticated
= authNTLMAuthenticated
;
213 authscheme
->authFixHeader
= authenticateNTLMFixErrorHeader
;
214 authscheme
->FreeUser
= authenticateNTLMFreeUser
;
215 authscheme
->authStart
= authenticateNTLMStart
;
216 authscheme
->authStats
= authenticateNTLMStats
;
217 authscheme
->authUserUsername
= authenticateNTLMUsername
;
218 authscheme
->getdirection
= authenticateNTLMDirection
;
219 authscheme
->decodeauth
= authenticateDecodeNTLMAuth
;
220 authscheme
->donefunc
= authNTLMDone
;
221 authscheme
->oncloseconnection
= authenticateNTLMOnCloseConnection
;
222 authscheme
->authConnLastHeader
= NTLMLastHeader
;
225 /* Initialize helpers and the like for this auth scheme. Called AFTER parsing the
228 authNTLMInit(authScheme
* scheme
)
230 static int ntlminit
= 0;
231 if (ntlmConfig
->authenticate
) {
232 if (!ntlm_helper_state_pool
)
233 ntlm_helper_state_pool
= memPoolCreate("NTLM Helper State data", sizeof(ntlm_helper_state_t
));
235 ntlm_user_pool
= memPoolCreate("NTLM Scheme User Data", sizeof(ntlm_user_t
));
236 if (!ntlm_request_pool
)
237 ntlm_request_pool
= memPoolCreate("NTLM Scheme Request Data", sizeof(ntlm_request_t
));
238 if (!ntlm_user_hash_pool
)
239 ntlm_user_hash_pool
= memPoolCreate("NTLM Header Hash Data", sizeof(struct ProxyAuthCachePointer
));
240 authntlm_initialised
= 1;
241 if (ntlmauthenticators
== NULL
)
242 ntlmauthenticators
= helperStatefulCreate("ntlmauthenticator");
243 if (!proxy_auth_cache
)
244 proxy_auth_cache
= hash_create((HASHCMP
*) strcmp
, 7921, hash_string
);
245 assert(proxy_auth_cache
);
246 ntlmauthenticators
->cmdline
= ntlmConfig
->authenticate
;
247 ntlmauthenticators
->n_to_start
= ntlmConfig
->authenticateChildren
;
248 ntlmauthenticators
->ipc_type
= IPC_STREAM
;
249 ntlmauthenticators
->datapool
= ntlm_helper_state_pool
;
250 ntlmauthenticators
->IsAvailable
= authenticateNTLMHelperServerAvailable
;
251 ntlmauthenticators
->OnEmptyQueue
= authenticateNTLMHelperServerOnEmpty
;
252 helperStatefulOpenServers(ntlmauthenticators
);
254 * TODO: In here send the initial YR to preinitialise the
258 * Think about this... currently we ask when the challenge
262 cachemgrRegister("ntlmauthenticator",
263 "NTLM User Authenticator Stats",
264 authenticateNTLMStats
, 0, 1);
267 CBDATA_INIT_TYPE(authenticateStateData
);
272 authenticateNTLMActive()
274 return (authntlm_initialised
== 1) ? 1 : 0;
281 if ((ntlmConfig
!= NULL
) && (ntlmConfig
->authenticate
!= NULL
) && (ntlmConfig
->authenticateChildren
!= 0) && (ntlmConfig
->challengeuses
> -1) && (ntlmConfig
->challengelifetime
> -1)) {
282 debug(29, 9) ("authNTLMConfigured: returning configured\n");
285 debug(29, 9) ("authNTLMConfigured: returning unconfigured\n");
292 authenticateNTLMDirection(auth_user_request_t
* auth_user_request
)
294 ntlm_request_t
*ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
295 /* null auth_user is checked for by authenticateDirection */
296 switch (ntlm_request
->auth_state
) {
297 case AUTHENTICATE_STATE_NONE
: /* no progress at all. */
298 debug(29, 1) ("authenticateNTLMDirection: called before NTLM Authenticate!. Report a bug to squid-dev. au %p\n", auth_user_request
);
300 case AUTHENTICATE_STATE_FAILED
:
302 case AUTHENTICATE_STATE_NEGOTIATE
: /* send to helper */
303 case AUTHENTICATE_STATE_RESPONSE
: /*send to helper */
305 case AUTHENTICATE_STATE_CHALLENGE
: /* send to client */
307 case AUTHENTICATE_STATE_DONE
: /* do nothing.. */
314 * Send the authenticate error header(s). Note: IE has a bug and the NTLM header
315 * must be first. To ensure that, the configure use --enable-auth=ntlm, anything
319 authenticateNTLMFixErrorHeader(auth_user_request_t
* auth_user_request
, HttpReply
* rep
, http_hdr_type type
, request_t
* request
)
321 ntlm_request_t
*ntlm_request
;
322 if (ntlmConfig
->authenticate
) {
323 /* New request, no user details */
324 if (auth_user_request
== NULL
) {
325 debug(29, 9) ("authenticateNTLMFixErrorHeader: Sending type:%d header: 'NTLM'\n", type
);
326 httpHeaderPutStrf(&rep
->header
, type
, "NTLM");
327 /* drop the connection */
328 httpHeaderDelByName(&rep
->header
, "keep-alive");
329 /* NTLM has problems if the initial connection is not dropped
330 * I haven't checked the RFC compliance of this hack - RBCollins */
331 request
->flags
.proxy_keepalive
= 0;
333 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
334 switch (ntlm_request
->auth_state
) {
335 case AUTHENTICATE_STATE_NONE
:
336 case AUTHENTICATE_STATE_FAILED
:
337 debug(29, 9) ("authenticateNTLMFixErrorHeader: Sending type:%d header: 'NTLM'\n", type
);
338 httpHeaderPutStrf(&rep
->header
, type
, "NTLM");
339 /* drop the connection */
340 httpHeaderDelByName(&rep
->header
, "keep-alive");
341 /* NTLM has problems if the initial connection is not dropped
342 * I haven't checked the RFC compliance of this hack - RBCollins */
343 request
->flags
.proxy_keepalive
= 0;
345 case AUTHENTICATE_STATE_CHALLENGE
:
346 /* we are 'waiting' for a response */
347 /* pass the challenge to the client */
348 debug(29, 9) ("authenticateNTLMFixErrorHeader: Sending type:%d header: 'NTLM %s'\n", type
, ntlm_request
->authchallenge
);
349 httpHeaderPutStrf(&rep
->header
, type
, "NTLM %s", ntlm_request
->authchallenge
);
352 debug(29, 0) ("authenticateNTLMFixErrorHeader: state %d.\n", ntlm_request
->auth_state
);
353 fatal("unexpected state in AuthenticateNTLMFixErrorHeader.\n");
360 authNTLMRequestFree(ntlm_request_t
* ntlm_request
)
364 if (ntlm_request
->ntlmnegotiate
)
365 xfree(ntlm_request
->ntlmnegotiate
);
366 if (ntlm_request
->authchallenge
)
367 xfree(ntlm_request
->authchallenge
);
368 if (ntlm_request
->ntlmauthenticate
)
369 xfree(ntlm_request
->ntlmauthenticate
);
370 if (ntlm_request
->authserver
!= NULL
&& ntlm_request
->authserver_deferred
) {
371 debug(29, 9) ("authenticateNTLMRequestFree: releasing server '%p'\n", ntlm_request
->authserver
);
372 helperStatefulReleaseServer(ntlm_request
->authserver
);
373 ntlm_request
->authserver
= NULL
;
375 memPoolFree(ntlm_request_pool
, ntlm_request
);
379 authNTLMAURequestFree(auth_user_request_t
* auth_user_request
)
381 if (auth_user_request
->scheme_data
)
382 authNTLMRequestFree(static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
));
383 auth_user_request
->scheme_data
= NULL
;
387 authenticateNTLMFreeUser(auth_user_t
* auth_user
)
389 dlink_node
*link
, *tmplink
;
390 ntlm_user_t
*ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
391 ProxyAuthCachePointer
*proxy_auth_hash
;
393 debug(29, 5) ("authenticateNTLMFreeUser: Clearing NTLM scheme data\n");
394 if (ntlm_user
->username
)
395 xfree(ntlm_user
->username
);
396 /* were they linked in by one or more proxy-authenticate headers */
397 link
= ntlm_user
->proxy_auth_list
.head
;
399 debug(29, 9) ("authenticateFreeProxyAuthUser: removing proxy_auth hash entry '%p'\n", link
->data
);
400 proxy_auth_hash
= static_cast<ProxyAuthCachePointer
*>(link
->data
);
403 dlinkDelete(tmplink
, &ntlm_user
->proxy_auth_list
);
404 hash_remove_link(proxy_auth_cache
, (hash_link
*) proxy_auth_hash
);
405 /* free the key (usually the proxy_auth header) */
406 xfree(proxy_auth_hash
->key
);
407 memPoolFree(ntlm_user_hash_pool
, proxy_auth_hash
);
409 memPoolFree(ntlm_user_pool
, ntlm_user
);
410 auth_user
->scheme_data
= NULL
;
413 static stateful_helper_callback_t
414 authenticateNTLMHandleplaceholder(void *data
, void *lastserver
, char *reply
)
416 authenticateStateData
*r
= static_cast<authenticateStateData
*>(data
);
417 stateful_helper_callback_t result
= S_HELPER_UNKNOWN
;
418 /* we should only be called for placeholder requests - which have no reply string */
419 assert(reply
== NULL
);
420 assert(r
->auth_user_request
);
421 /* standard callback stuff */
422 if (!cbdataReferenceValid(r
->data
)) {
423 debug(29, 1) ("AuthenticateNTLMHandlePlacheholder: invalid callback data.\n");
426 /* call authenticateNTLMStart to retry this request */
427 debug(29, 9) ("authenticateNTLMHandleplaceholder: calling authenticateNTLMStart\n");
428 authenticateNTLMStart(r
->auth_user_request
, r
->handler
, r
->data
);
429 cbdataReferenceDone(r
->data
);
430 authenticateStateFree(r
);
434 static stateful_helper_callback_t
435 authenticateNTLMHandleReply(void *data
, void *lastserver
, char *reply
)
437 authenticateStateData
*r
= static_cast<authenticateStateData
*>(data
);
438 ntlm_helper_state_t
*helperstate
;
439 stateful_helper_callback_t result
= S_HELPER_UNKNOWN
;
441 auth_user_request_t
*auth_user_request
;
442 auth_user_t
*auth_user
;
443 ntlm_user_t
*ntlm_user
;
444 ntlm_request_t
*ntlm_request
;
445 debug(29, 9) ("authenticateNTLMHandleReply: Helper: '%p' {%s}\n", lastserver
, reply
? reply
: "<NULL>");
446 if (!cbdataReferenceValid(r
->data
)) {
447 debug(29, 1) ("AuthenticateNTLMHandleReply: invalid callback data. Releasing helper '%p'.\n", lastserver
);
448 cbdataReferenceDone(r
->data
);
449 authenticateStateFree(r
);
450 debug(29, 9) ("NTLM HandleReply, telling stateful helper : %d\n", S_HELPER_RELEASE
);
451 return S_HELPER_RELEASE
;
455 * TODO: this occurs when a helper crashes. We should clean
456 * up that helpers resources and queued requests.
458 fatal("authenticateNTLMHandleReply: called with no result string\n");
460 /* seperate out the useful data */
461 if (strncasecmp(reply
, "TT ", 3) == 0) {
463 /* we have been given a Challenge */
464 /* we should check we weren't given an empty challenge */
465 /* copy the challenge to the state data */
466 helperstate
= static_cast<ntlm_helper_state_t
*>(helperStatefulServerGetData(static_cast<helper_stateful_server
*>(lastserver
)));
467 if (helperstate
== NULL
)
468 fatal("lost NTLM helper state! quitting\n");
469 helperstate
->challenge
= xstrndup(reply
, NTLM_CHALLENGE_SZ
+ 5);
470 helperstate
->challengeuses
= 0;
471 helperstate
->renewed
= squid_curtime
;
472 /* and we satisfy the request that happended on the refresh boundary */
473 /* note this code is now in two places FIXME */
474 assert(r
->auth_user_request
!= NULL
);
475 assert(r
->auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
476 auth_user_request
= r
->auth_user_request
;
477 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
478 assert(ntlm_request
!= NULL
);
479 result
= S_HELPER_DEFER
;
480 /* reserve the server for future authentication */
481 ntlm_request
->authserver_deferred
= 1;
482 debug(29, 9) ("authenticateNTLMHandleReply: helper '%p'\n", lastserver
);
483 assert(ntlm_request
->auth_state
== AUTHENTICATE_STATE_NEGOTIATE
);
484 ntlm_request
->authserver
= static_cast<helper_stateful_server
*>(lastserver
);
485 ntlm_request
->authchallenge
= xstrndup(reply
, NTLM_CHALLENGE_SZ
+ 5);
486 } else if (strncasecmp(reply
, "AF ", 3) == 0) {
487 /* we're finished, release the helper */
489 assert(r
->auth_user_request
!= NULL
);
490 assert(r
->auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
491 auth_user_request
= r
->auth_user_request
;
492 assert(auth_user_request
->scheme_data
!= NULL
);
493 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
494 auth_user
= auth_user_request
->auth_user
;
495 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user_request
->auth_user
->scheme_data
);
496 assert(ntlm_user
!= NULL
);
497 result
= S_HELPER_RELEASE
;
498 /* we only expect OK when finishing the handshake */
499 assert(ntlm_request
->auth_state
== AUTHENTICATE_STATE_RESPONSE
);
500 ntlm_user
->username
= xstrndup(reply
, MAX_LOGIN_SZ
);
501 ntlm_request
->authserver
= NULL
;
502 #ifdef NTLM_FAIL_OPEN
503 } else if (strncasecmp(reply
, "LD ", 3) == 0) {
504 /* This is a variant of BH, which rather than deny access
505 * allows the user through. The helper is starved and then refreshed
506 * via YR, all pending authentications are likely to fail also.
507 * It is meant for those helpers which occasionally fail for
508 * no reason at all (casus belli, NTLMSSP helper on NT domain,
509 * failing about 1 auth out of 1k.
510 * The code is a merge from the BH case with snippets of the AF
512 /* AF code: mark user as authenticated */
514 assert(r
->auth_user_request
!= NULL
);
515 assert(r
->auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
516 auth_user_request
= r
->auth_user_request
;
517 assert(auth_user_request
->scheme_data
!= NULL
);
518 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
519 auth_user
= auth_user_request
->auth_user
;
520 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user_request
->auth_user
->scheme_data
);
521 assert(ntlm_user
!= NULL
);
522 result
= S_HELPER_RELEASE
;
523 /* we only expect LD when finishing the handshake */
524 assert(ntlm_request
->auth_state
== AUTHENTICATE_STATE_RESPONSE
);
525 ntlm_user
->username
= xstrndup(reply
, MAX_LOGIN_SZ
);
526 helperstate
= helperStatefulServerGetData(ntlm_request
->authserver
);
527 ntlm_request
->authserver
= NULL
;
528 /* BH code: mark helper as broken */
529 /* mark it for starving */
530 helperstate
->starve
= 1;
532 } else if (strncasecmp(reply
, "NA ", 3) == 0) {
533 /* TODO: only work with auth_user here if it exists */
534 assert(r
->auth_user_request
!= NULL
);
535 assert(r
->auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
536 auth_user_request
= r
->auth_user_request
;
537 auth_user
= auth_user_request
->auth_user
;
538 assert(auth_user
!= NULL
);
539 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
540 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
541 assert((ntlm_user
!= NULL
) && (ntlm_request
!= NULL
));
542 /* todo: action of Negotiate state on error */
543 result
= S_HELPER_RELEASE
; /*some error has occured. no more requests */
544 ntlm_request
->authserver
= NULL
;
545 debug(29, 4) ("authenticateNTLMHandleReply: Error validating user via NTLM. Error returned '%s'\n", reply
);
546 ntlm_request
->auth_state
= AUTHENTICATE_STATE_FAILED
;
547 if ((t
= strchr(reply
, ' '))) /* strip after a space */
549 } else if (strncasecmp(reply
, "NA", 2) == 0) {
550 /* NTLM Helper protocol violation! */
551 fatal("NTLM Helper returned invalid response \"NA\" - a error message MUST be attached\n");
552 } else if (strncasecmp(reply
, "BH ", 3) == 0) {
553 /* TODO kick off a refresh process. This can occur after a YR or after
554 * a KK. If after a YR release the helper and resubmit the request via
555 * Authenticate NTLM start.
556 * If after a KK deny the user's request w/ 407 and mark the helper as
558 assert(r
->auth_user_request
!= NULL
);
559 assert(r
->auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
560 auth_user_request
= r
->auth_user_request
;
561 auth_user
= auth_user_request
->auth_user
;
562 assert(auth_user
!= NULL
);
563 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
564 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
565 assert((ntlm_user
!= NULL
) && (ntlm_request
!= NULL
));
566 result
= S_HELPER_RELEASE
; /*some error has occured. no more requests for
568 assert(ntlm_request
->authserver
? ntlm_request
->authserver
== lastserver
: 1);
569 helperstate
= static_cast<ntlm_helper_state_t
*>(helperStatefulServerGetData(ntlm_request
->authserver
));
570 ntlm_request
->authserver
= NULL
;
571 if (ntlm_request
->auth_state
== AUTHENTICATE_STATE_NEGOTIATE
) {
572 /* The helper broke on YR. It automatically
574 debug(29, 1) ("authenticateNTLMHandleReply: Error obtaining challenge from helper: %p. Error returned '%s'\n", lastserver
, reply
);
575 /* mark it for starving */
576 helperstate
->starve
= 1;
577 /* resubmit the request. This helper is currently busy, so we will get
578 * a different one. Our auth state stays the same */
579 authenticateNTLMStart(auth_user_request
, r
->handler
, r
->data
);
580 /* don't call the callback */
581 cbdataReferenceDone(r
->data
);
582 authenticateStateFree(r
);
583 debug(29, 9) ("NTLM HandleReply, telling stateful helper : %d\n", result
);
586 /* the helper broke on a KK */
587 /* first the standard KK stuff */
588 debug(29, 4) ("authenticateNTLMHandleReply: Error validating user via NTLM. Error returned '%s'\n", reply
);
589 if ((t
= strchr(reply
, ' '))) /* strip after a space */
591 /* now we mark the helper for resetting. */
592 helperstate
->starve
= 1;
593 ntlm_request
->auth_state
= AUTHENTICATE_STATE_FAILED
;
595 /* TODO: only work with auth_user here if it exists */
596 /* TODO: take the request state into consideration */
597 assert(r
->auth_user_request
!= NULL
);
598 assert(r
->auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
599 auth_user_request
= r
->auth_user_request
;
600 auth_user
= auth_user_request
->auth_user
;
601 assert(auth_user
!= NULL
);
602 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
603 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
604 assert((ntlm_user
!= NULL
) && (ntlm_request
!= NULL
));
605 debug(29, 1) ("authenticateNTLMHandleReply: *** Unsupported helper response ***, '%s'\n", reply
);
606 /* **** NOTE THIS CODE IS EFFECTIVELY UNTESTED **** */
607 /* restart the authentication process */
608 ntlm_request
->auth_state
= AUTHENTICATE_STATE_NONE
;
609 assert(ntlm_request
->authserver
? ntlm_request
->authserver
== lastserver
: 1);
610 ntlm_request
->authserver
= NULL
;
612 r
->handler(r
->data
, NULL
);
613 cbdataReferenceDone(r
->data
);
614 authenticateStateFree(r
);
615 debug(29, 9) ("NTLM HandleReply, telling stateful helper : %d\n", result
);
620 authenticateNTLMStats(StoreEntry
* sentry
)
622 storeAppendPrintf(sentry
, "NTLM Authenticator Statistics:\n");
623 helperStatefulStats(sentry
, ntlmauthenticators
);
626 /* is a particular challenge still valid ? */
628 authenticateNTLMValidChallenge(ntlm_helper_state_t
* helperstate
)
630 debug(29, 9) ("authenticateNTLMValidChallenge: Challenge is %s\n", helperstate
->challenge
? "Valid" : "Invalid");
631 if (helperstate
->challenge
== NULL
)
636 /* does our policy call for changing the challenge now? */
638 authenticateNTLMChangeChallenge_p(ntlm_helper_state_t
* helperstate
)
640 /* don't check for invalid challenges just for expiry choices */
641 /* this is needed because we have to starve the helper until all old
642 * requests have been satisfied */
643 if (!helperstate
->renewed
) {
644 /* first use, no challenge has been set. Without this check, it will
646 debug(29, 5) ("authenticateNTLMChangeChallenge_p: first use\n");
649 if (helperstate
->challengeuses
> ntlmConfig
->challengeuses
) {
650 debug(29, 4) ("authenticateNTLMChangeChallenge_p: Challenge uses (%d) exceeded max uses (%d)\n", helperstate
->challengeuses
, ntlmConfig
->challengeuses
);
653 if (helperstate
->renewed
+ ntlmConfig
->challengelifetime
< squid_curtime
) {
654 debug(29, 4) ("authenticateNTLMChangeChallenge_p: Challenge exceeded max lifetime by %d seconds\n", (int) (squid_curtime
- (helperstate
->renewed
+ ntlmConfig
->challengelifetime
)));
657 debug(29, 9) ("Challenge is to be reused\n");
661 /* send the initial data to a stateful ntlm authenticator module */
663 authenticateNTLMStart(auth_user_request_t
* auth_user_request
, RH
* handler
, void *data
)
665 authenticateStateData
*r
= NULL
;
666 helper_stateful_server
*server
;
667 ntlm_helper_state_t
*helperstate
;
669 char *sent_string
= NULL
;
670 ntlm_user_t
*ntlm_user
;
671 ntlm_request_t
*ntlm_request
;
672 auth_user_t
*auth_user
;
674 assert(auth_user_request
);
675 auth_user
= auth_user_request
->auth_user
;
676 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
677 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
679 assert(ntlm_request
);
682 assert(auth_user
->auth_type
= AUTH_NTLM
);
683 debug(29, 9) ("authenticateNTLMStart: auth state '%d'\n", ntlm_request
->auth_state
);
684 switch (ntlm_request
->auth_state
) {
685 case AUTHENTICATE_STATE_NEGOTIATE
:
686 sent_string
= ntlm_request
->ntlmnegotiate
;
688 case AUTHENTICATE_STATE_RESPONSE
:
689 sent_string
= ntlm_request
->ntlmauthenticate
;
690 assert(ntlm_request
->authserver
);
691 debug(29, 9) ("authenticateNTLMStart: Asking NTLMauthenticator '%p'.\n", ntlm_request
->authserver
);
694 fatal("Invalid authenticate state for NTLMStart");
697 while (!xisspace(*sent_string
)) /*trim NTLM */
700 while (xisspace(*sent_string
)) /*trim leading spaces */
703 debug(29, 9) ("authenticateNTLMStart: state '%d'\n", ntlm_request
->auth_state
);
704 debug(29, 9) ("authenticateNTLMStart: '%s'\n", sent_string
);
705 if (ntlmConfig
->authenticate
== NULL
) {
706 debug(29, 0) ("authenticateNTLMStart: no NTLM program specified:'%s'\n", sent_string
);
710 /* this is ugly TODO: move the challenge generation routines to their own function and
711 * tidy the logic up to make use of the efficiency we now have */
712 switch (ntlm_request
->auth_state
) {
713 case AUTHENTICATE_STATE_NEGOTIATE
:
715 * 1: get a helper server
716 * 2: does it have a challenge?
717 * 3: tell it to get a challenge, or give ntlmauthdone the challenge
719 server
= helperStatefulDefer(ntlmauthenticators
);
720 helperstate
= server
? static_cast<ntlm_helper_state_t
*>(helperStatefulServerGetData(server
)) : NULL
;
721 while ((server
!= NULL
) && authenticateNTLMChangeChallenge_p(helperstate
)) {
722 /* flag this helper for challenge changing */
723 helperstate
->starve
= 1;
724 /* and release the deferred request */
725 helperStatefulReleaseServer(server
);
726 /* Get another deferrable server */
727 server
= helperStatefulDefer(ntlmauthenticators
);
728 helperstate
= server
? static_cast<ntlm_helper_state_t
*>(helperStatefulServerGetData(server
)) : NULL
;
731 debug(29, 9) ("unable to get a deferred ntlm helper... all helpers are refreshing challenges. Queuing as a placeholder request.\n");
733 ntlm_request
->authserver
= server
;
734 /* tell the log what helper we have been given */
735 debug(29, 9) ("authenticateNTLMStart: helper '%p' assigned\n", server
);
736 /* server and valid challenge? */
737 if ((server
== NULL
) || !authenticateNTLMValidChallenge(helperstate
)) {
738 /* No server, or server with invalid challenge */
739 r
= cbdataAlloc(authenticateStateData
);
740 r
->handler
= handler
;
741 r
->data
= cbdataReference(data
);
742 r
->auth_user_request
= auth_user_request
;
743 if (server
== NULL
) {
744 helperStatefulSubmit(ntlmauthenticators
, NULL
, authenticateNTLMHandleplaceholder
, r
, NULL
);
746 /* Server with invalid challenge */
747 snprintf(buf
, 8192, "YR\n");
748 helperStatefulSubmit(ntlmauthenticators
, buf
, authenticateNTLMHandleReply
, r
, ntlm_request
->authserver
);
751 /* (server != NULL and we have a valid challenge) */
752 /* TODO: turn the below into a function and call from here and handlereply */
753 /* increment the challenge uses */
754 helperstate
->challengeuses
++;
755 /* assign the challenge */
756 ntlm_request
->authchallenge
= xstrndup(helperstate
->challenge
, NTLM_CHALLENGE_SZ
+ 5);
757 /* we're not actually submitting a request, so we need to release the helper
758 * should the connection close unexpectedly
760 ntlm_request
->authserver_deferred
= 1;
765 case AUTHENTICATE_STATE_RESPONSE
:
766 r
= cbdataAlloc(authenticateStateData
);
767 r
->handler
= handler
;
768 r
->data
= cbdataReference(data
);
769 r
->auth_user_request
= auth_user_request
;
770 snprintf(buf
, 8192, "KK %s\n", sent_string
);
771 /* getting rid of deferred request status */
772 ntlm_request
->authserver_deferred
= 0;
773 helperStatefulSubmit(ntlmauthenticators
, buf
, authenticateNTLMHandleReply
, r
, ntlm_request
->authserver
);
774 debug(29, 9) ("authenticateNTLMstart: finished\n");
777 fatal("Invalid authenticate state for NTLMStart");
781 /* callback used by stateful helper routines */
783 authenticateNTLMHelperServerAvailable(void *data
)
785 ntlm_helper_state_t
*statedata
= static_cast<ntlm_helper_state_t
*>(data
);
786 if (statedata
!= NULL
) {
787 if (statedata
->starve
) {
788 debug(29, 4) ("authenticateNTLMHelperServerAvailable: starving - returning 0\n");
791 debug(29, 4) ("authenticateNTLMHelperServerAvailable: not starving - returning 1\n");
795 debug(29, 4) ("authenticateNTLMHelperServerAvailable: no state data - returning 0\n");
800 authenticateNTLMHelperServerOnEmpty(void *data
)
802 ntlm_helper_state_t
*statedata
= static_cast<ntlm_helper_state_t
*>(data
);
803 if (statedata
== NULL
)
805 if (statedata
->starve
) {
806 /* we have been starving the helper */
807 debug(29, 9) ("authenticateNTLMHelperServerOnEmpty: resetting challenge details\n");
808 statedata
->starve
= 0;
809 statedata
->challengeuses
= 0;
810 statedata
->renewed
= 0;
811 xfree(statedata
->challenge
);
812 statedata
->challenge
= NULL
;
817 /* clear the NTLM helper of being reserved for future requests */
819 authenticateNTLMReleaseServer(auth_user_request_t
* auth_user_request
)
821 ntlm_request_t
*ntlm_request
;
822 assert(auth_user_request
->auth_user
->auth_type
== AUTH_NTLM
);
823 assert(auth_user_request
->scheme_data
!= NULL
);
824 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
825 debug(29, 9) ("authenticateNTLMReleaseServer: releasing server '%p'\n", ntlm_request
->authserver
);
826 helperStatefulReleaseServer(ntlm_request
->authserver
);
827 ntlm_request
->authserver
= NULL
;
830 /* clear any connection related authentication details */
832 authenticateNTLMOnCloseConnection(ConnStateData
* conn
)
834 ntlm_request_t
*ntlm_request
;
835 assert(conn
!= NULL
);
836 if (conn
->auth_user_request
!= NULL
) {
837 assert(conn
->auth_user_request
->scheme_data
!= NULL
);
838 ntlm_request
= static_cast< ntlm_request_t
*>(conn
->auth_user_request
->scheme_data
);
839 assert(ntlm_request
->conn
== conn
);
840 if (ntlm_request
->authserver
!= NULL
&& ntlm_request
->authserver_deferred
)
841 authenticateNTLMReleaseServer(conn
->auth_user_request
);
842 /* unlock the connection based lock */
843 debug(29, 9) ("authenticateNTLMOnCloseConnection: Unlocking auth_user from the connection.\n");
844 /* This still breaks the abstraction, but is at least read only now */
845 /* Ensure that the auth user request will be getting closed */
846 /* IFF we start persisting the struct after the conn closes - say for logging
847 * then this test may become invalid
849 assert(authenticateRequestRefCount(conn
->auth_user_request
) == 1);
850 authenticateAuthUserRequestUnlock(conn
->auth_user_request
);
851 conn
->auth_user_request
= NULL
;
855 /* authenticateUserUsername: return a pointer to the username in the */
857 authenticateNTLMUsername(auth_user_t
const * auth_user
)
859 ntlm_user_t
*ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
861 return ntlm_user
->username
;
865 /* NTLMLastHeader: return a pointer to the last header used in authenticating
866 * the request/conneciton
869 NTLMLastHeader(auth_user_request_t
* auth_user_request
)
871 ntlm_request_t
*ntlm_request
;
872 assert(auth_user_request
!= NULL
);
873 assert(auth_user_request
->scheme_data
!= NULL
);
874 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
875 return ntlm_request
->ntlmauthenticate
;
879 * Decode an NTLM [Proxy-]Auth string, placing the results in the passed
880 * Auth_user structure.
884 authenticateDecodeNTLMAuth(auth_user_request_t
* auth_user_request
, const char *proxy_auth
)
887 assert(auth_user_request
->auth_user
== NULL
);
888 auth_user_request
->auth_user
= authenticateAuthUserNew("ntlm");
889 auth_user_request
->auth_user
->auth_type
= AUTH_NTLM
;
890 auth_user_request
->auth_user
->scheme_data
= memPoolAlloc(ntlm_user_pool
);
891 auth_user_request
->scheme_data
= memPoolAlloc(ntlm_request_pool
);
892 memset(auth_user_request
->scheme_data
, '\0', sizeof(ntlm_request_t
));
893 /* lock for the auth_user_request link */
894 authenticateAuthUserLock(auth_user_request
->auth_user
);
895 node
= dlinkNodeNew();
896 dlinkAdd(auth_user_request
, node
, &auth_user_request
->auth_user
->requests
);
898 /* all we have to do is identify that it's NTLM - the helper does the rest */
899 debug(29, 9) ("authenticateDecodeNTLMAuth: NTLM authentication\n");
904 authenticateNTLMcmpUsername(ntlm_user_t
* u1
, ntlm_user_t
* u2
)
906 return strcmp(u1
->username
, u2
->username
);
910 /* there is a known race where a single client recieves the same challenge
911 * and sends the same response to squid on a single select cycle.
912 * Check for this and if found ignore the new link
915 authenticateProxyAuthCacheAddLink(const char *key
, auth_user_t
* auth_user
)
917 struct ProxyAuthCachePointer
*proxy_auth_hash
;
919 ntlm_user_t
*ntlm_user
;
920 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
921 node
= ntlm_user
->proxy_auth_list
.head
;
922 /* prevent duplicates */
924 if (!strcmp(key
, (char const *)((struct ProxyAuthCachePointer
*) node
->data
)->key
))
928 proxy_auth_hash
= static_cast<ProxyAuthCachePointer
*>(memPoolAlloc(ntlm_user_hash_pool
));
929 proxy_auth_hash
->key
= xstrdup(key
);
930 proxy_auth_hash
->auth_user
= auth_user
;
931 dlinkAddTail(proxy_auth_hash
, &proxy_auth_hash
->link
, &ntlm_user
->proxy_auth_list
);
932 hash_join(proxy_auth_cache
, (hash_link
*) proxy_auth_hash
);
937 authNTLMAuthenticated(auth_user_request_t
* auth_user_request
)
939 ntlm_request_t
*ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
940 if (ntlm_request
->auth_state
== AUTHENTICATE_STATE_DONE
)
942 debug(29, 9) ("User not fully authenticated.\n");
947 authenticateNTLMAuthenticateUser(auth_user_request_t
* auth_user_request
, request_t
* request
, ConnStateData
* conn
, http_hdr_type type
)
949 const char *proxy_auth
;
950 struct ProxyAuthCachePointer
*proxy_auth_hash
= NULL
;
951 auth_user_hash_pointer
*usernamehash
;
952 auth_user_t
*auth_user
;
953 ntlm_request_t
*ntlm_request
;
954 ntlm_user_t
*ntlm_user
;
955 LOCAL_ARRAY(char, ntlmhash
, NTLM_CHALLENGE_SZ
* 2);
957 proxy_auth
= httpHeaderGetStr(&request
->header
, type
);
959 auth_user
= auth_user_request
->auth_user
;
961 assert(auth_user
->auth_type
== AUTH_NTLM
);
962 assert(auth_user
->scheme_data
!= NULL
);
963 assert(auth_user_request
->scheme_data
!= NULL
);
964 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
965 ntlm_request
= static_cast< ntlm_request_t
*>(auth_user_request
->scheme_data
);
966 /* Check that we are in the client side, where we can generate
969 ntlm_request
->auth_state
= AUTHENTICATE_STATE_FAILED
;
970 debug(29, 1) ("authenticateNTLMAuthenticateUser: attempt to perform authentication without a connection!\n");
974 switch (ntlm_request
->auth_state
) {
975 case AUTHENTICATE_STATE_NONE
:
976 /* we've recieved a negotiate request. pass to a helper */
977 debug(29, 9) ("authenticateNTLMAuthenticateUser: auth state ntlm none. %s\n", proxy_auth
);
978 ntlm_request
->auth_state
= AUTHENTICATE_STATE_NEGOTIATE
;
979 ntlm_request
->ntlmnegotiate
= xstrndup(proxy_auth
, NTLM_CHALLENGE_SZ
+ 5);
980 conn
->auth_type
= AUTH_NTLM
;
981 conn
->auth_user_request
= auth_user_request
;
982 ntlm_request
->conn
= conn
;
983 /* and lock for the connection duration */
984 debug(29, 9) ("authenticateNTLMAuthenticateUser: Locking auth_user from the connection.\n");
985 authenticateAuthUserRequestLock(auth_user_request
);
988 case AUTHENTICATE_STATE_NEGOTIATE
:
989 ntlm_request
->auth_state
= AUTHENTICATE_STATE_CHALLENGE
;
990 /* We _MUST_ have the auth challenge by now */
991 assert(ntlm_request
->authchallenge
);
994 case AUTHENTICATE_STATE_CHALLENGE
:
995 /* we should have recieved a NTLM challenge. pass it to the same
997 debug(29, 9) ("authenticateNTLMAuthenticateUser: auth state challenge with header %s.\n", proxy_auth
);
998 /* do a cache lookup here. If it matches it's a successful ntlm
999 * challenge - release the helper and use the existing auth_user
1001 if (strncmp("NTLM ", proxy_auth
, 5) == 0) {
1002 ntlm_request
->ntlmauthenticate
= xstrdup(proxy_auth
);
1004 fatal("Incorrect scheme in auth header\n");
1005 /* TODO: more fault tolerance.. reset the auth scheme here */
1007 /* cache entries have authenticateauthheaderchallengestring */
1008 snprintf(ntlmhash
, sizeof(ntlmhash
) - 1, "%s%s",
1009 ntlm_request
->ntlmauthenticate
,
1010 ntlm_request
->authchallenge
);
1011 /* see if we already know this user's authenticate */
1012 debug(29, 9) ("aclMatchProxyAuth: cache lookup with key '%s'\n", ntlmhash
);
1013 assert(proxy_auth_cache
!= NULL
);
1014 proxy_auth_hash
= static_cast<ProxyAuthCachePointer
*>(hash_lookup(proxy_auth_cache
, ntlmhash
));
1015 if (!proxy_auth_hash
) { /* not in the hash table */
1016 debug(29, 4) ("authenticateNTLMAuthenticateUser: proxy-auth cache miss.\n");
1017 ntlm_request
->auth_state
= AUTHENTICATE_STATE_RESPONSE
;
1018 /* verify with the ntlm helper */
1020 debug(29, 4) ("authenticateNTLMAuthenticateUser: ntlm proxy-auth cache hit\n");
1021 /* throw away the temporary entry */
1022 ntlm_request
->authserver_deferred
= 0;
1023 authenticateNTLMReleaseServer(auth_user_request
);
1024 authenticateAuthUserMerge(auth_user
, proxy_auth_hash
->auth_user
);
1025 auth_user
= proxy_auth_hash
->auth_user
;
1026 auth_user_request
->auth_user
= auth_user
;
1027 ntlm_request
->auth_state
= AUTHENTICATE_STATE_DONE
;
1029 debug(29, 9) ("found matching cache entry\n");
1030 assert(auth_user
->auth_type
== AUTH_NTLM
);
1031 /* get the existing entries details */
1032 ntlm_user
= static_cast<ntlm_user_t
*>(auth_user
->scheme_data
);
1033 debug(29, 9) ("Username to be used is %s\n", ntlm_user
->username
);
1034 /* on ntlm auth we do not unlock the auth_user until the
1035 * connection is dropped. Thank MS for this quirk */
1036 auth_user
->expiretime
= current_time
.tv_sec
;
1040 case AUTHENTICATE_STATE_RESPONSE
:
1041 /* auth-challenge pair cache miss. We've just got the response from the helper */
1042 /*add to cache and let them through */
1043 ntlm_request
->auth_state
= AUTHENTICATE_STATE_DONE
;
1044 /* this connection is authenticated */
1045 debug(29, 4) ("authenticated\nch %s\nauth %s\nauthuser %s\n",
1046 ntlm_request
->authchallenge
,
1047 ntlm_request
->ntlmauthenticate
,
1048 ntlm_user
->username
);
1049 /* cache entries have authenticateauthheaderchallengestring */
1050 snprintf(ntlmhash
, sizeof(ntlmhash
) - 1, "%s%s",
1051 ntlm_request
->ntlmauthenticate
,
1052 ntlm_request
->authchallenge
);
1053 /* see if this is an existing user with a different proxy_auth
1055 if ((usernamehash
= static_cast<AuthUserHashPointer
*>(hash_lookup(proxy_auth_username_cache
, ntlm_user
->username
)))) {
1056 while ((authUserHashPointerUser(usernamehash
)->auth_type
!= auth_user
->auth_type
) && (usernamehash
->next
) && !authenticateNTLMcmpUsername(static_cast<ntlm_user_t
*>(authUserHashPointerUser(usernamehash
)->scheme_data
), ntlm_user
))
1057 usernamehash
= static_cast<AuthUserHashPointer
*>(usernamehash
->next
);
1058 if (authUserHashPointerUser(usernamehash
)->auth_type
== auth_user
->auth_type
) {
1060 * add another link from the new proxy_auth to the
1061 * auth_user structure and update the information */
1062 assert(proxy_auth_hash
== NULL
);
1063 authenticateProxyAuthCacheAddLink(ntlmhash
, authUserHashPointerUser(usernamehash
));
1064 /* we can't seamlessly recheck the username due to the
1065 * challenge nature of the protocol. Just free the
1066 * temporary auth_user */
1067 authenticateAuthUserMerge(auth_user
, authUserHashPointerUser(usernamehash
));
1068 auth_user
= authUserHashPointerUser(usernamehash
);
1069 auth_user_request
->auth_user
= auth_user
;
1072 /* store user in hash's */
1073 authenticateUserNameCacheAdd(auth_user
);
1074 authenticateProxyAuthCacheAddLink(ntlmhash
, auth_user
);
1076 /* set these to now because this is either a new login from an
1077 * existing user or a new user */
1078 auth_user
->expiretime
= current_time
.tv_sec
;
1081 case AUTHENTICATE_STATE_DONE
:
1082 fatal("authenticateNTLMAuthenticateUser: unexpect auth state DONE! Report a bug to the squid developers.\n");
1084 case AUTHENTICATE_STATE_FAILED
:
1085 /* we've failed somewhere in authentication */
1086 debug(29, 9) ("authenticateNTLMAuthenticateUser: auth state ntlm failed. %s\n", proxy_auth
);