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2d70df72 | 1 | |
2 | /* | |
df80d445 | 3 | * $Id: auth_digest.cc,v 1.32 2003/11/07 17:23:04 hno Exp $ |
2d70df72 | 4 | * |
5 | * DEBUG: section 29 Authenticator | |
6 | * AUTHOR: Robert Collins | |
7 | * | |
8 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ | |
9 | * ---------------------------------------------------------- | |
10 | * | |
11 | * Squid is the result of efforts by numerous individuals from the | |
12 | * Internet community. Development is led by Duane Wessels of the | |
13 | * National Laboratory for Applied Network Research and funded by the | |
14 | * National Science Foundation. Squid is Copyrighted (C) 1998 by | |
15 | * the Regents of the University of California. Please see the | |
16 | * COPYRIGHT file for full details. Squid incorporates software | |
17 | * developed and/or copyrighted by other sources. Please see the | |
18 | * CREDITS file for full details. | |
19 | * | |
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. | |
24 | * | |
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. | |
29 | * | |
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. | |
33 | * | |
34 | */ | |
35 | ||
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 */ | |
39 | ||
40 | ||
41 | #include "squid.h" | |
42 | #include "rfc2617.h" | |
43 | #include "auth_digest.h" | |
e6ccf245 | 44 | #include "authenticate.h" |
45 | #include "Store.h" | |
a2ac85d9 | 46 | #include "HttpRequest.h" |
924f73bc | 47 | #include "HttpReply.h" |
2d70df72 | 48 | |
c78aa667 | 49 | extern AUTHSSETUP authSchemeSetup_digest; |
50 | ||
2d70df72 | 51 | /* Digest Scheme */ |
52 | ||
53 | static HLPCB authenticateDigestHandleReply; | |
54 | static AUTHSACTIVE authenticateDigestActive; | |
2d70df72 | 55 | #if WAITING_FOR_TE |
56 | static AUTHSADDTRAILER authDigestAddTrailer; | |
57 | #endif | |
2d70df72 | 58 | static AUTHSCONFIGURED authDigestConfigured; |
2d70df72 | 59 | static AUTHSDECODE authenticateDigestDecodeAuth; |
60 | static AUTHSDUMP authDigestCfgDump; | |
61 | static AUTHSFIXERR authenticateDigestFixHeader; | |
62 | static AUTHSFREE authenticateDigestUserFree; | |
63 | static AUTHSFREECONFIG authDigestFreeConfig; | |
64 | static AUTHSINIT authDigestInit; | |
65 | static AUTHSPARSE authDigestParse; | |
2d70df72 | 66 | static AUTHSSTART authenticateDigestStart; |
67 | static AUTHSSTATS authenticateDigestStats; | |
68 | static AUTHSUSERNAME authenticateDigestUsername; | |
69 | static AUTHSSHUTDOWN authDigestDone; | |
70 | ||
71 | static helper *digestauthenticators = NULL; | |
72 | ||
73 | static hash_table *digest_nonce_cache; | |
74 | ||
75 | static auth_digest_config *digestConfig = NULL; | |
76 | ||
77 | static int authdigest_initialised = 0; | |
c78aa667 | 78 | static MemPool *digest_nonce_pool = NULL; |
2d70df72 | 79 | |
e6ccf245 | 80 | CBDATA_TYPE(DigestAuthenticateStateData); |
2d70df72 | 81 | |
82 | /* | |
83 | * | |
84 | * Nonce Functions | |
85 | * | |
86 | */ | |
87 | ||
88 | static void authenticateDigestNonceCacheCleanup(void *data); | |
89 | static digest_nonce_h *authenticateDigestNonceFindNonce(const char *nonceb64); | |
c193c972 | 90 | static digest_nonce_h *authenticateDigestNonceNew(void); |
c78aa667 | 91 | static void authenticateDigestNonceDelete(digest_nonce_h * nonce); |
c193c972 | 92 | static void authenticateDigestNonceSetup(void); |
93 | static void authenticateDigestNonceShutdown(void); | |
94 | static void authenticateDigestNonceReconfigure(void); | |
c78aa667 | 95 | static const char *authenticateDigestNonceNonceb64(digest_nonce_h * nonce); |
96 | static int authDigestNonceIsValid(digest_nonce_h * nonce, char nc[9]); | |
97 | static int authDigestNonceIsStale(digest_nonce_h * nonce); | |
98 | static void authDigestNonceEncode(digest_nonce_h * nonce); | |
99 | static int authDigestNonceLastRequest(digest_nonce_h * nonce); | |
100 | static void authDigestNonceLink(digest_nonce_h * nonce); | |
101 | static void authDigestNonceUnlink(digest_nonce_h * nonce); | |
102 | #if NOT_USED | |
103 | static int authDigestNonceLinks(digest_nonce_h * nonce); | |
104 | #endif | |
105 | static void authDigestNonceUserUnlink(digest_nonce_h * nonce); | |
106 | static void authDigestNoncePurge(digest_nonce_h * nonce); | |
2d70df72 | 107 | |
c78aa667 | 108 | static void |
2d70df72 | 109 | authDigestNonceEncode(digest_nonce_h * nonce) |
110 | { | |
111 | if (!nonce) | |
62e76326 | 112 | return; |
113 | ||
4a8b20e8 | 114 | if (nonce->key) |
62e76326 | 115 | xfree(nonce->key); |
116 | ||
4a8b20e8 | 117 | nonce->key = xstrdup(base64_encode_bin((char *) &(nonce->noncedata), sizeof(digest_nonce_data))); |
2d70df72 | 118 | } |
119 | ||
c78aa667 | 120 | static digest_nonce_h * |
c193c972 | 121 | authenticateDigestNonceNew(void) |
2d70df72 | 122 | { |
2f44bd34 | 123 | digest_nonce_h *newnonce = static_cast < digest_nonce_h * >(memPoolAlloc(digest_nonce_pool)); |
2d70df72 | 124 | digest_nonce_h *temp; |
125 | ||
62e76326 | 126 | /* NONCE CREATION - NOTES AND REASONING. RBC 20010108 |
127 | * === EXCERPT FROM RFC 2617 === | |
128 | * The contents of the nonce are implementation dependent. The quality | |
129 | * of the implementation depends on a good choice. A nonce might, for | |
130 | * example, be constructed as the base 64 encoding of | |
131 | * | |
132 | * time-stamp H(time-stamp ":" ETag ":" private-key) | |
133 | * | |
134 | * where time-stamp is a server-generated time or other non-repeating | |
135 | * value, ETag is the value of the HTTP ETag header associated with | |
136 | * the requested entity, and private-key is data known only to the | |
137 | * server. With a nonce of this form a server would recalculate the | |
138 | * hash portion after receiving the client authentication header and | |
139 | * reject the request if it did not match the nonce from that header | |
140 | * or if the time-stamp value is not recent enough. In this way the | |
141 | * server can limit the time of the nonce's validity. The inclusion of | |
142 | * the ETag prevents a replay request for an updated version of the | |
143 | * resource. (Note: including the IP address of the client in the | |
144 | * nonce would appear to offer the server the ability to limit the | |
145 | * reuse of the nonce to the same client that originally got it. | |
146 | * However, that would break proxy farms, where requests from a single | |
147 | * user often go through different proxies in the farm. Also, IP | |
148 | * address spoofing is not that hard.) | |
149 | * ==== | |
150 | * | |
151 | * Now for my reasoning: | |
152 | * We will not accept a unrecognised nonce->we have all recognisable | |
82b045dc | 153 | * nonces stored. If we send out unique base64 encodings we guarantee |
62e76326 | 154 | * that a given nonce applies to only one user (barring attacks or |
155 | * really bad timing with expiry and creation). Using a random | |
156 | * component in the nonce allows us to loop to find a unique nonce. | |
157 | * We use H(nonce_data) so the nonce is meaningless to the reciever. | |
158 | * So our nonce looks like base64(H(timestamp,pointertohash,randomdata)) | |
159 | * And even if our randomness is not very random (probably due to | |
160 | * bad coding on my part) we don't really care - the timestamp and | |
82b045dc | 161 | * memory pointer also guarantee local uniqueness in the input to the hash |
162 | * function. | |
62e76326 | 163 | */ |
2d70df72 | 164 | |
165 | /* create a new nonce */ | |
166 | newnonce->nc = 0; | |
167 | newnonce->flags.valid = 1; | |
168 | newnonce->noncedata.self = newnonce; | |
169 | newnonce->noncedata.creationtime = current_time.tv_sec; | |
b600a19d | 170 | newnonce->noncedata.randomdata = squid_random(); |
2d70df72 | 171 | |
172 | authDigestNonceEncode(newnonce); | |
74830fc8 | 173 | /* |
174 | * loop until we get a unique nonce. The nonce creation must | |
175 | * have a random factor | |
176 | */ | |
62e76326 | 177 | |
2f44bd34 | 178 | while ((temp = authenticateDigestNonceFindNonce((char const *) (newnonce->key)))) { |
62e76326 | 179 | /* create a new nonce */ |
180 | newnonce->noncedata.randomdata = squid_random(); | |
181 | authDigestNonceEncode(newnonce); | |
2d70df72 | 182 | } |
62e76326 | 183 | |
4a8b20e8 | 184 | hash_join(digest_nonce_cache, newnonce); |
2d70df72 | 185 | /* the cache's link */ |
186 | authDigestNonceLink(newnonce); | |
187 | newnonce->flags.incache = 1; | |
2f44bd34 | 188 | debug(29, 5) ("authenticateDigestNonceNew: created nonce %p at %ld\n", newnonce, (long int) newnonce->noncedata.creationtime); |
2d70df72 | 189 | return newnonce; |
190 | } | |
191 | ||
c78aa667 | 192 | static void |
2d70df72 | 193 | authenticateDigestNonceDelete(digest_nonce_h * nonce) |
194 | { | |
195 | if (nonce) { | |
62e76326 | 196 | assert(nonce->references == 0); |
2d70df72 | 197 | #if UNREACHABLECODE |
62e76326 | 198 | |
199 | if (nonce->flags.incache) | |
200 | hash_remove_link(digest_nonce_cache, nonce); | |
201 | ||
2d70df72 | 202 | #endif |
62e76326 | 203 | |
204 | assert(nonce->flags.incache == 0); | |
205 | ||
206 | safe_free(nonce->key); | |
207 | ||
208 | memPoolFree(digest_nonce_pool, nonce); | |
2d70df72 | 209 | } |
210 | } | |
211 | ||
c78aa667 | 212 | static void |
c193c972 | 213 | authenticateDigestNonceSetup(void) |
2d70df72 | 214 | { |
215 | if (!digest_nonce_pool) | |
62e76326 | 216 | digest_nonce_pool = memPoolCreate("Digest Scheme nonce's", sizeof(digest_nonce_h)); |
217 | ||
2d70df72 | 218 | if (!digest_nonce_cache) { |
62e76326 | 219 | digest_nonce_cache = hash_create((HASHCMP *) strcmp, 7921, hash_string); |
220 | assert(digest_nonce_cache); | |
221 | eventAdd("Digest none cache maintenance", authenticateDigestNonceCacheCleanup, NULL, digestConfig->nonceGCInterval, 1); | |
2d70df72 | 222 | } |
223 | } | |
224 | ||
c78aa667 | 225 | static void |
c193c972 | 226 | authenticateDigestNonceShutdown(void) |
2d70df72 | 227 | { |
62e76326 | 228 | /* |
2d70df72 | 229 | * We empty the cache of any nonces left in there. |
230 | */ | |
231 | digest_nonce_h *nonce; | |
62e76326 | 232 | |
2d70df72 | 233 | if (digest_nonce_cache) { |
62e76326 | 234 | debug(29, 2) ("authenticateDigestNonceShutdown: Shutting down nonce cache \n"); |
235 | hash_first(digest_nonce_cache); | |
236 | ||
237 | while ((nonce = ((digest_nonce_h *) hash_next(digest_nonce_cache)))) { | |
238 | assert(nonce->flags.incache); | |
239 | authDigestNoncePurge(nonce); | |
240 | } | |
2d70df72 | 241 | } |
62e76326 | 242 | |
2f44bd34 | 243 | #if DEBUGSHUTDOWN |
2d70df72 | 244 | if (digest_nonce_pool) { |
62e76326 | 245 | memPoolDestroy(&digest_nonce_pool); |
2d70df72 | 246 | } |
62e76326 | 247 | |
2f44bd34 | 248 | #endif |
2d70df72 | 249 | debug(29, 2) ("authenticateDigestNonceShutdown: Nonce cache shutdown\n"); |
250 | } | |
251 | ||
c78aa667 | 252 | static void |
c193c972 | 253 | authenticateDigestNonceReconfigure(void) |
62e76326 | 254 | {} |
2d70df72 | 255 | |
c78aa667 | 256 | static void |
2d70df72 | 257 | authenticateDigestNonceCacheCleanup(void *data) |
258 | { | |
259 | /* | |
74830fc8 | 260 | * We walk the hash by nonceb64 as that is the unique key we |
261 | * use. For big hash tables we could consider stepping through | |
262 | * the cache, 100/200 entries at a time. Lets see how it flies | |
263 | * first. | |
2d70df72 | 264 | */ |
265 | digest_nonce_h *nonce; | |
266 | debug(29, 3) ("authenticateDigestNonceCacheCleanup: Cleaning the nonce cache now\n"); | |
33272404 | 267 | debug(29, 3) ("authenticateDigestNonceCacheCleanup: Current time: %ld\n", |
62e76326 | 268 | (long int) current_time.tv_sec); |
2d70df72 | 269 | hash_first(digest_nonce_cache); |
62e76326 | 270 | |
2d70df72 | 271 | while ((nonce = ((digest_nonce_h *) hash_next(digest_nonce_cache)))) { |
62e76326 | 272 | debug(29, 3) ("authenticateDigestNonceCacheCleanup: nonce entry : %p '%s'\n", nonce, (char *) nonce->key); |
273 | debug(29, 4) ("authenticateDigestNonceCacheCleanup: Creation time: %ld\n", (long int) nonce->noncedata.creationtime); | |
274 | ||
275 | if (authDigestNonceIsStale(nonce)) { | |
276 | debug(29, 4) ("authenticateDigestNonceCacheCleanup: Removing nonce %s from cache due to timeout.\n", (char *) nonce->key); | |
277 | assert(nonce->flags.incache); | |
278 | /* invalidate nonce so future requests fail */ | |
279 | nonce->flags.valid = 0; | |
280 | /* if it is tied to a auth_user, remove the tie */ | |
281 | authDigestNonceUserUnlink(nonce); | |
282 | authDigestNoncePurge(nonce); | |
283 | } | |
2d70df72 | 284 | } |
62e76326 | 285 | |
2d70df72 | 286 | debug(29, 3) ("authenticateDigestNonceCacheCleanup: Finished cleaning the nonce cache.\n"); |
62e76326 | 287 | |
2d70df72 | 288 | if (authenticateDigestActive()) |
62e76326 | 289 | eventAdd("Digest none cache maintenance", authenticateDigestNonceCacheCleanup, NULL, digestConfig->nonceGCInterval, 1); |
2d70df72 | 290 | } |
291 | ||
c78aa667 | 292 | static void |
2d70df72 | 293 | authDigestNonceLink(digest_nonce_h * nonce) |
294 | { | |
295 | assert(nonce != NULL); | |
296 | nonce->references++; | |
33272404 | 297 | debug(29, 9) ("authDigestNonceLink: nonce '%p' now at '%d'.\n", nonce, nonce->references); |
2d70df72 | 298 | } |
299 | ||
c78aa667 | 300 | #if NOT_USED |
301 | static int | |
2d70df72 | 302 | authDigestNonceLinks(digest_nonce_h * nonce) |
303 | { | |
304 | if (!nonce) | |
62e76326 | 305 | return -1; |
306 | ||
2d70df72 | 307 | return nonce->references; |
308 | } | |
62e76326 | 309 | |
c78aa667 | 310 | #endif |
2d70df72 | 311 | |
c78aa667 | 312 | static void |
2d70df72 | 313 | authDigestNonceUnlink(digest_nonce_h * nonce) |
314 | { | |
315 | assert(nonce != NULL); | |
62e76326 | 316 | |
2d70df72 | 317 | if (nonce->references > 0) { |
62e76326 | 318 | nonce->references--; |
2d70df72 | 319 | } else { |
62e76326 | 320 | debug(29, 1) ("authDigestNonceUnlink; Attempt to lower nonce %p refcount below 0!\n", nonce); |
2d70df72 | 321 | } |
62e76326 | 322 | |
33272404 | 323 | debug(29, 9) ("authDigestNonceUnlink: nonce '%p' now at '%d'.\n", nonce, nonce->references); |
62e76326 | 324 | |
2d70df72 | 325 | if (nonce->references == 0) |
62e76326 | 326 | authenticateDigestNonceDelete(nonce); |
2d70df72 | 327 | } |
328 | ||
c78aa667 | 329 | static const char * |
2d70df72 | 330 | authenticateDigestNonceNonceb64(digest_nonce_h * nonce) |
331 | { | |
332 | if (!nonce) | |
62e76326 | 333 | return NULL; |
334 | ||
2f44bd34 | 335 | return (char const *) nonce->key; |
2d70df72 | 336 | } |
337 | ||
c78aa667 | 338 | static digest_nonce_h * |
2d70df72 | 339 | authenticateDigestNonceFindNonce(const char *nonceb64) |
340 | { | |
341 | digest_nonce_h *nonce = NULL; | |
62e76326 | 342 | |
2d70df72 | 343 | if (nonceb64 == NULL) |
62e76326 | 344 | return NULL; |
345 | ||
2d70df72 | 346 | debug(29, 9) ("authDigestNonceFindNonce:looking for nonceb64 '%s' in the nonce cache.\n", nonceb64); |
62e76326 | 347 | |
2f44bd34 | 348 | nonce = static_cast < digest_nonce_h * >(hash_lookup(digest_nonce_cache, nonceb64)); |
62e76326 | 349 | |
e6ccf245 | 350 | if ((nonce == NULL) || (strcmp(authenticateDigestNonceNonceb64(nonce), nonceb64))) |
62e76326 | 351 | return NULL; |
352 | ||
33272404 | 353 | debug(29, 9) ("authDigestNonceFindNonce: Found nonce '%p'\n", nonce); |
62e76326 | 354 | |
2d70df72 | 355 | return nonce; |
356 | } | |
357 | ||
c78aa667 | 358 | static int |
2d70df72 | 359 | authDigestNonceIsValid(digest_nonce_h * nonce, char nc[9]) |
360 | { | |
d205783b | 361 | unsigned long intnc; |
2d70df72 | 362 | /* do we have a nonce ? */ |
62e76326 | 363 | |
2d70df72 | 364 | if (!nonce) |
62e76326 | 365 | return 0; |
366 | ||
d205783b | 367 | intnc = strtol(nc, NULL, 16); |
62e76326 | 368 | |
f5292c64 | 369 | /* has it already been invalidated ? */ |
370 | if (!nonce->flags.valid) { | |
371 | debug(29, 4) ("authDigestNonceIsValid: Nonce already invalidated\n"); | |
372 | return 0; | |
373 | } | |
374 | ||
375 | /* is the nonce-count ok ? */ | |
376 | if (!digestConfig->CheckNonceCount) { | |
377 | nonce->nc++; | |
378 | return -1; /* forced OK by configuration */ | |
379 | } | |
380 | ||
d205783b | 381 | if ((digestConfig->NonceStrictness && intnc != nonce->nc + 1) || |
62e76326 | 382 | intnc < nonce->nc + 1) { |
383 | debug(29, 4) ("authDigestNonceIsValid: Nonce count doesn't match\n"); | |
384 | nonce->flags.valid = 0; | |
385 | return 0; | |
2d70df72 | 386 | } |
62e76326 | 387 | |
2d70df72 | 388 | /* seems ok */ |
d205783b | 389 | /* increment the nonce count - we've already checked that intnc is a |
390 | * valid representation for us, so we don't need the test here. | |
391 | */ | |
392 | nonce->nc = intnc; | |
62e76326 | 393 | |
2d70df72 | 394 | return -1; |
395 | } | |
396 | ||
c78aa667 | 397 | static int |
2d70df72 | 398 | authDigestNonceIsStale(digest_nonce_h * nonce) |
399 | { | |
400 | /* do we have a nonce ? */ | |
62e76326 | 401 | |
2d70df72 | 402 | if (!nonce) |
62e76326 | 403 | return -1; |
404 | ||
2d70df72 | 405 | /* has it's max duration expired? */ |
406 | if (nonce->noncedata.creationtime + digestConfig->noncemaxduration < current_time.tv_sec) { | |
62e76326 | 407 | debug(29, 4) ("authDigestNonceIsStale: Nonce is too old. %ld %d %ld\n", (long int) nonce->noncedata.creationtime, (int) digestConfig->noncemaxduration, (long int) current_time.tv_sec); |
408 | nonce->flags.valid = 0; | |
409 | return -1; | |
2d70df72 | 410 | } |
62e76326 | 411 | |
2d70df72 | 412 | if (nonce->nc > 99999998) { |
62e76326 | 413 | debug(29, 4) ("authDigestNonceIsStale: Nonce count overflow\n"); |
414 | nonce->flags.valid = 0; | |
415 | return -1; | |
2d70df72 | 416 | } |
62e76326 | 417 | |
2d70df72 | 418 | if (nonce->nc > digestConfig->noncemaxuses) { |
62e76326 | 419 | debug(29, 4) ("authDigestNoncelastRequest: Nonce count over user limit\n"); |
420 | nonce->flags.valid = 0; | |
421 | return -1; | |
2d70df72 | 422 | } |
62e76326 | 423 | |
2d70df72 | 424 | /* seems ok */ |
425 | return 0; | |
426 | } | |
427 | ||
62e76326 | 428 | /* return -1 if the digest will be stale on the next request */ |
c78aa667 | 429 | static int |
2d70df72 | 430 | authDigestNonceLastRequest(digest_nonce_h * nonce) |
431 | { | |
432 | if (!nonce) | |
62e76326 | 433 | return -1; |
434 | ||
2d70df72 | 435 | if (nonce->nc == 99999997) { |
62e76326 | 436 | debug(29, 4) ("authDigestNoncelastRequest: Nonce count about to overflow\n"); |
437 | return -1; | |
2d70df72 | 438 | } |
62e76326 | 439 | |
d205783b | 440 | if (nonce->nc >= digestConfig->noncemaxuses - 1) { |
62e76326 | 441 | debug(29, 4) ("authDigestNoncelastRequest: Nonce count about to hit user limit\n"); |
442 | return -1; | |
2d70df72 | 443 | } |
62e76326 | 444 | |
2d70df72 | 445 | /* and other tests are possible. */ |
446 | return 0; | |
447 | } | |
448 | ||
c78aa667 | 449 | static void |
2d70df72 | 450 | authDigestNoncePurge(digest_nonce_h * nonce) |
451 | { | |
452 | if (!nonce) | |
62e76326 | 453 | return; |
454 | ||
2d70df72 | 455 | if (!nonce->flags.incache) |
62e76326 | 456 | return; |
457 | ||
4a8b20e8 | 458 | hash_remove_link(digest_nonce_cache, nonce); |
62e76326 | 459 | |
2d70df72 | 460 | nonce->flags.incache = 0; |
62e76326 | 461 | |
2d70df72 | 462 | /* the cache's link */ |
463 | authDigestNonceUnlink(nonce); | |
464 | } | |
465 | ||
62e76326 | 466 | /* USER related functions */ |
2d70df72 | 467 | |
468 | ||
c78aa667 | 469 | #if NOT_USED |
470 | static int | |
2d70df72 | 471 | authDigestUsercmpname(digest_user_h * u1, digest_user_h * u2) |
472 | { | |
473 | return strcmp(u1->username, u2->username); | |
474 | } | |
62e76326 | 475 | |
c78aa667 | 476 | #endif |
2d70df72 | 477 | |
c78aa667 | 478 | static auth_user_t * |
2d70df72 | 479 | authDigestUserFindUsername(const char *username) |
480 | { | |
481 | auth_user_hash_pointer *usernamehash; | |
482 | auth_user_t *auth_user; | |
483 | debug(29, 9) ("authDigestUserFindUsername: Looking for user '%s'\n", username); | |
62e76326 | 484 | |
2f44bd34 | 485 | if (username && (usernamehash = static_cast < auth_user_hash_pointer * >(hash_lookup(proxy_auth_username_cache, username)))) { |
62e76326 | 486 | while ((authUserHashPointerUser(usernamehash)->auth_type != AUTH_DIGEST) && |
487 | (usernamehash->next)) | |
488 | usernamehash = static_cast < auth_user_hash_pointer * >(usernamehash->next); | |
489 | ||
490 | auth_user = NULL; | |
491 | ||
492 | if (authUserHashPointerUser(usernamehash)->auth_type == AUTH_DIGEST) { | |
493 | auth_user = authUserHashPointerUser(usernamehash); | |
494 | } | |
495 | ||
496 | return auth_user; | |
2d70df72 | 497 | } |
62e76326 | 498 | |
2d70df72 | 499 | return NULL; |
500 | } | |
501 | ||
c78aa667 | 502 | static void |
c193c972 | 503 | authDigestUserShutdown(void) |
2d70df72 | 504 | { |
505 | /* | |
506 | * Future work: the auth framework could flush it's cache | |
507 | */ | |
508 | auth_user_hash_pointer *usernamehash; | |
509 | auth_user_t *auth_user; | |
510 | hash_first(proxy_auth_username_cache); | |
62e76326 | 511 | |
2d70df72 | 512 | while ((usernamehash = ((auth_user_hash_pointer *) hash_next(proxy_auth_username_cache)))) { |
62e76326 | 513 | auth_user = authUserHashPointerUser(usernamehash); |
514 | ||
515 | if (authscheme_list[auth_user->auth_module - 1].typestr && | |
516 | strcmp(authscheme_list[auth_user->auth_module - 1].typestr, "digest") == 0) | |
517 | /* it's digest */ | |
518 | authenticateAuthUserUnlock(auth_user); | |
2d70df72 | 519 | } |
2d70df72 | 520 | } |
521 | ||
522 | ||
523 | /* request related functions */ | |
524 | ||
82b045dc | 525 | /* delete the digest request structure. Does NOT delete related structures */ |
526 | digest_request_h::~digest_request_h() | |
2d70df72 | 527 | { |
82b045dc | 528 | safe_free (nonceb64); |
529 | safe_free (cnonce); | |
530 | safe_free (realm); | |
531 | safe_free (pszPass); | |
532 | safe_free (algorithm); | |
533 | safe_free (pszMethod); | |
534 | safe_free (qop); | |
535 | safe_free (uri); | |
536 | safe_free (response); | |
537 | ||
538 | if (nonce) | |
539 | authDigestNonceUnlink(nonce); | |
540 | ||
541 | if (theUser) | |
542 | authenticateAuthUserUnlock(theUser); | |
2d70df72 | 543 | } |
544 | ||
c78aa667 | 545 | static void |
2d70df72 | 546 | authDigestDone(void) |
547 | { | |
548 | if (digestauthenticators) | |
62e76326 | 549 | helperShutdown(digestauthenticators); |
550 | ||
2d70df72 | 551 | authdigest_initialised = 0; |
62e76326 | 552 | |
2d70df72 | 553 | if (!shutting_down) { |
62e76326 | 554 | authenticateDigestNonceReconfigure(); |
555 | return; | |
2d70df72 | 556 | } |
62e76326 | 557 | |
2d70df72 | 558 | if (digestauthenticators) { |
62e76326 | 559 | helperFree(digestauthenticators); |
560 | digestauthenticators = NULL; | |
2d70df72 | 561 | } |
62e76326 | 562 | |
2d70df72 | 563 | authDigestUserShutdown(); |
564 | authenticateDigestNonceShutdown(); | |
565 | debug(29, 2) ("authenticateDigestDone: Digest authentication shut down.\n"); | |
566 | } | |
567 | ||
568 | static void | |
569 | authDigestCfgDump(StoreEntry * entry, const char *name, authScheme * scheme) | |
570 | { | |
2f44bd34 | 571 | auth_digest_config *config = static_cast < auth_digest_config * >(scheme->scheme_data); |
2d70df72 | 572 | wordlist *list = config->authenticate; |
573 | debug(29, 9) ("authDigestCfgDump: Dumping configuration\n"); | |
574 | storeAppendPrintf(entry, "%s %s", name, "digest"); | |
62e76326 | 575 | |
2d70df72 | 576 | while (list != NULL) { |
62e76326 | 577 | storeAppendPrintf(entry, " %s", list->key); |
578 | list = list->next; | |
2d70df72 | 579 | } |
62e76326 | 580 | |
2d70df72 | 581 | storeAppendPrintf(entry, "\n%s %s realm %s\n%s %s children %d\n%s %s nonce_max_count %d\n%s %s nonce_max_duration %d seconds\n%s %s nonce_garbage_interval %d seconds\n", |
62e76326 | 582 | name, "digest", config->digestAuthRealm, |
583 | name, "digest", config->authenticateChildren, | |
584 | name, "digest", config->noncemaxuses, | |
585 | name, "digest", (int) config->noncemaxduration, | |
586 | name, "digest", (int) config->nonceGCInterval); | |
2d70df72 | 587 | } |
588 | ||
589 | void | |
590 | authSchemeSetup_digest(authscheme_entry_t * authscheme) | |
591 | { | |
592 | assert(!authdigest_initialised); | |
593 | authscheme->Active = authenticateDigestActive; | |
594 | authscheme->configured = authDigestConfigured; | |
595 | authscheme->parse = authDigestParse; | |
596 | authscheme->freeconfig = authDigestFreeConfig; | |
597 | authscheme->dump = authDigestCfgDump; | |
598 | authscheme->init = authDigestInit; | |
82b045dc | 599 | authscheme->authAuthenticate = NULL; |
600 | authscheme->authenticated = NULL; | |
2d70df72 | 601 | authscheme->authFixHeader = authenticateDigestFixHeader; |
602 | authscheme->FreeUser = authenticateDigestUserFree; | |
2d70df72 | 603 | #if WAITING_FOR_TE |
62e76326 | 604 | |
2d70df72 | 605 | authscheme->AddTrailer = authDigestAddTrailer; |
606 | #endif | |
62e76326 | 607 | |
2d70df72 | 608 | authscheme->authStart = authenticateDigestStart; |
609 | authscheme->authStats = authenticateDigestStats; | |
610 | authscheme->authUserUsername = authenticateDigestUsername; | |
82b045dc | 611 | authscheme->getdirection = NULL; |
2d70df72 | 612 | authscheme->oncloseconnection = NULL; |
613 | authscheme->decodeauth = authenticateDigestDecodeAuth; | |
614 | authscheme->donefunc = authDigestDone; | |
82b045dc | 615 | authscheme->requestFree = NULL; |
60d096f4 | 616 | authscheme->authConnLastHeader = NULL; |
2d70df72 | 617 | } |
618 | ||
c78aa667 | 619 | static int |
c193c972 | 620 | authenticateDigestActive(void) |
2d70df72 | 621 | { |
622 | return (authdigest_initialised == 1) ? 1 : 0; | |
623 | } | |
62e76326 | 624 | |
c78aa667 | 625 | static int |
c193c972 | 626 | authDigestConfigured(void) |
2d70df72 | 627 | { |
628 | if ((digestConfig != NULL) && (digestConfig->authenticate != NULL) && | |
62e76326 | 629 | (digestConfig->authenticateChildren != 0) && |
630 | (digestConfig->digestAuthRealm != NULL) && (digestConfig->noncemaxduration > -1)) | |
631 | return 1; | |
632 | ||
2d70df72 | 633 | return 0; |
634 | } | |
635 | ||
82b045dc | 636 | int |
637 | digest_request_h::authenticated() const | |
2d70df72 | 638 | { |
82b045dc | 639 | if (credentials() == Ok) |
62e76326 | 640 | return 1; |
82b045dc | 641 | |
642 | return 0; | |
2d70df72 | 643 | } |
644 | ||
645 | /* log a digest user in | |
646 | */ | |
82b045dc | 647 | void |
190154cf | 648 | digest_request_h::authenticate(HttpRequest * request, ConnStateData::Pointer conn, http_hdr_type type) |
2d70df72 | 649 | { |
650 | auth_user_t *auth_user; | |
651 | digest_request_h *digest_request; | |
652 | digest_user_h *digest_user; | |
653 | ||
654 | HASHHEX SESSIONKEY; | |
655 | HASHHEX HA2 = ""; | |
656 | HASHHEX Response; | |
657 | ||
82b045dc | 658 | assert(authUser() != NULL); |
659 | auth_user = authUser(); | |
2d70df72 | 660 | |
2d70df72 | 661 | assert(auth_user->scheme_data != NULL); |
2f44bd34 | 662 | digest_user = static_cast < digest_user_h * >(auth_user->scheme_data); |
2d70df72 | 663 | |
9bea1d5b | 664 | /* if the check has corrupted the user, just return */ |
62e76326 | 665 | |
82b045dc | 666 | if (credentials() == Failed) { |
62e76326 | 667 | return; |
bd507204 | 668 | } |
62e76326 | 669 | |
82b045dc | 670 | digest_request = this; |
2d70df72 | 671 | |
672 | /* do we have the HA1 */ | |
62e76326 | 673 | |
2d70df72 | 674 | if (!digest_user->HA1created) { |
82b045dc | 675 | credentials(Pending); |
62e76326 | 676 | return; |
2d70df72 | 677 | } |
62e76326 | 678 | |
2d70df72 | 679 | if (digest_request->nonce == NULL) { |
62e76326 | 680 | /* this isn't a nonce we issued */ |
82b045dc | 681 | credentials(Failed); |
62e76326 | 682 | return; |
2d70df72 | 683 | } |
62e76326 | 684 | |
2d70df72 | 685 | DigestCalcHA1(digest_request->algorithm, NULL, NULL, NULL, |
62e76326 | 686 | authenticateDigestNonceNonceb64(digest_request->nonce), |
687 | digest_request->cnonce, | |
688 | digest_user->HA1, SESSIONKEY); | |
2d70df72 | 689 | DigestCalcResponse(SESSIONKEY, authenticateDigestNonceNonceb64(digest_request->nonce), |
62e76326 | 690 | digest_request->nc, digest_request->cnonce, digest_request->qop, |
691 | RequestMethodStr[request->method], digest_request->uri, HA2, Response); | |
2d70df72 | 692 | |
693 | debug(29, 9) ("\nResponse = '%s'\n" | |
62e76326 | 694 | "squid is = '%s'\n", digest_request->response, Response); |
2d70df72 | 695 | |
df80d445 | 696 | if (strcasecmp(digest_request->response, Response) != 0) { |
697 | if (!digest_request->flags.helper_queried) { | |
698 | /* Query the helper in case the password has changed */ | |
699 | digest_request->flags.helper_queried = 1; | |
700 | digest_request->credentials_ok = Pending; | |
701 | return; | |
702 | } | |
703 | ||
f5292c64 | 704 | if (digestConfig->PostWorkaround && request->method != METHOD_GET) { |
705 | /* Ugly workaround for certain very broken browsers using the | |
706 | * wrong method to calculate the request-digest on POST request. | |
707 | * This should be deleted once Digest authentication becomes more | |
708 | * widespread and such broken browsers no longer are commonly | |
709 | * used. | |
710 | */ | |
711 | DigestCalcResponse(SESSIONKEY, authenticateDigestNonceNonceb64(digest_request->nonce), | |
712 | digest_request->nc, digest_request->cnonce, digest_request->qop, | |
713 | RequestMethodStr[METHOD_GET], digest_request->uri, HA2, Response); | |
714 | ||
715 | if (strcasecmp(digest_request->response, Response)) { | |
716 | credentials(Failed); | |
717 | return; | |
718 | } else { | |
719 | const char *useragent = httpHeaderGetStr(&request->header, HDR_USER_AGENT); | |
720 | ||
c3edaed6 | 721 | static struct in_addr last_broken_addr; |
722 | static int seen_broken_client = 0; | |
723 | ||
724 | if (!seen_broken_client) { | |
725 | last_broken_addr = no_addr; | |
726 | seen_broken_client = 1; | |
727 | } | |
f5292c64 | 728 | |
729 | if (memcmp(&last_broken_addr, &request->client_addr, sizeof(last_broken_addr)) != 0) { | |
730 | debug(29, 1) ("\nDigest POST bug detected from %s using '%s'. Please upgrade browser. See Bug #630 for details.\n", inet_ntoa(request->client_addr), useragent ? useragent : "-"); | |
731 | last_broken_addr = request->client_addr; | |
732 | } | |
733 | } | |
734 | } else { | |
735 | credentials(Failed); | |
736 | return; | |
737 | } | |
738 | ||
739 | /* check for stale nonce */ | |
740 | if (!authDigestNonceIsValid(digest_request->nonce, digest_request->nc)) { | |
741 | debug(29, 3) ("authenticateDigestAuthenticateuser: user '%s' validated OK but nonce stale\n", | |
742 | digest_user->username); | |
743 | digest_request->flags.nonce_stale = 1; | |
744 | credentials(Failed); | |
745 | return; | |
746 | } | |
2d70df72 | 747 | } |
62e76326 | 748 | |
82b045dc | 749 | credentials(Ok); |
f5292c64 | 750 | |
2d70df72 | 751 | /* password was checked and did match */ |
752 | debug(29, 4) ("authenticateDigestAuthenticateuser: user '%s' validated OK\n", | |
62e76326 | 753 | digest_user->username); |
2d70df72 | 754 | |
755 | /* auth_user is now linked, we reset these values | |
756 | * after external auth occurs anyway */ | |
757 | auth_user->expiretime = current_time.tv_sec; | |
2d70df72 | 758 | return; |
759 | } | |
760 | ||
82b045dc | 761 | int |
762 | digest_request_h::direction() | |
2d70df72 | 763 | { |
82b045dc | 764 | switch (credentials()) { |
62e76326 | 765 | |
82b045dc | 766 | case Unchecked: |
62e76326 | 767 | return -1; |
768 | ||
82b045dc | 769 | case Ok: |
62e76326 | 770 | |
62e76326 | 771 | return 0; |
772 | ||
82b045dc | 773 | case Pending: |
62e76326 | 774 | return -1; |
775 | ||
82b045dc | 776 | case Failed: |
f5292c64 | 777 | |
88d7e7f4 | 778 | if (flags.nonce_stale) |
f5292c64 | 779 | /* nonce is stale, send new challenge */ |
780 | return 1; | |
781 | ||
62e76326 | 782 | return -2; |
2d70df72 | 783 | } |
62e76326 | 784 | |
2d70df72 | 785 | return -2; |
786 | } | |
787 | ||
788 | /* add the [proxy]authorisation header */ | |
82b045dc | 789 | void |
790 | digest_request_h::addHeader(HttpReply * rep, int accel) | |
2d70df72 | 791 | { |
6e3d4bbc | 792 | http_hdr_type type; |
62e76326 | 793 | |
2d70df72 | 794 | /* don't add to authentication error pages */ |
82b045dc | 795 | |
2d70df72 | 796 | if ((!accel && rep->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED) |
62e76326 | 797 | || (accel && rep->sline.status == HTTP_UNAUTHORIZED)) |
798 | return; | |
799 | ||
2d70df72 | 800 | type = accel ? HDR_AUTHENTICATION_INFO : HDR_PROXY_AUTHENTICATION_INFO; |
801 | ||
802 | #if WAITING_FOR_TE | |
803 | /* test for http/1.1 transfer chunked encoding */ | |
804 | if (chunkedtest) | |
62e76326 | 805 | return; |
806 | ||
2d70df72 | 807 | #endif |
808 | ||
82b045dc | 809 | if ((digestConfig->authenticate) && authDigestNonceLastRequest(nonce)) { |
810 | flags.authinfo_sent = 1; | |
811 | debug(29, 9) ("authDigestAddHead: Sending type:%d header: 'nextnonce=\"%s\"", type, authenticateDigestNonceNonceb64(nonce)); | |
812 | httpHeaderPutStrf(&rep->header, type, "nextnonce=\"%s\"", authenticateDigestNonceNonceb64(nonce)); | |
2d70df72 | 813 | } |
814 | } | |
815 | ||
816 | #if WAITING_FOR_TE | |
817 | /* add the [proxy]authorisation header */ | |
c78aa667 | 818 | static void |
2d70df72 | 819 | authDigestAddTrailer(auth_user_request_t * auth_user_request, HttpReply * rep, int accel) |
820 | { | |
821 | int type; | |
822 | digest_request_h *digest_request; | |
62e76326 | 823 | |
2d70df72 | 824 | if (!auth_user_request) |
62e76326 | 825 | return; |
826 | ||
82b045dc | 827 | digest_request = dynamic_cast < digest_request_h * >(auth_user_request->state()); |
62e76326 | 828 | |
2d70df72 | 829 | /* has the header already been send? */ |
830 | if (digest_request->flags.authinfo_sent) | |
62e76326 | 831 | return; |
832 | ||
2d70df72 | 833 | /* don't add to authentication error pages */ |
834 | if ((!accel && rep->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED) | |
62e76326 | 835 | || (accel && rep->sline.status == HTTP_UNAUTHORIZED)) |
836 | return; | |
837 | ||
2d70df72 | 838 | type = accel ? HDR_AUTHENTICATION_INFO : HDR_PROXY_AUTHENTICATION_INFO; |
839 | ||
840 | if ((digestConfig->authenticate) && authDigestNonceLastRequest(digest_request->nonce)) { | |
62e76326 | 841 | debug(29, 9) ("authDigestAddTrailer: Sending type:%d header: 'nextnonce=\"%s\"", type, authenticateDigestNonceNonceb64(digest_request->nonce)); |
842 | httpTrailerPutStrf(&rep->header, type, "nextnonce=\"%s\"", authenticateDigestNonceNonceb64(digest_request->nonce)); | |
2d70df72 | 843 | } |
844 | } | |
62e76326 | 845 | |
2d70df72 | 846 | #endif |
847 | ||
848 | /* add the [www-|Proxy-]authenticate header on a 407 or 401 reply */ | |
849 | void | |
190154cf | 850 | authenticateDigestFixHeader(auth_user_request_t * auth_user_request, HttpReply * rep, http_hdr_type type, HttpRequest * request) |
2d70df72 | 851 | { |
82b045dc | 852 | if (!digestConfig->authenticate) |
853 | return; | |
854 | ||
2d70df72 | 855 | int stale = 0; |
62e76326 | 856 | |
82b045dc | 857 | if (auth_user_request && auth_user_request->state()) { |
858 | digest_request_h *digest_request; | |
859 | digest_request = dynamic_cast < digest_request_h * >(auth_user_request->state()); | |
860 | assert (digest_request); | |
62e76326 | 861 | |
f5292c64 | 862 | stale = digest_request->flags.nonce_stale; |
2d70df72 | 863 | } |
82b045dc | 864 | |
865 | /* on a 407 or 401 we always use a new nonce */ | |
866 | digest_nonce_h *nonce = authenticateDigestNonceNew(); | |
867 | ||
868 | debug(29, 9) ("authenticateFixHeader: Sending type:%d header: 'Digest realm=\"%s\", nonce=\"%s\", qop=\"%s\", stale=%s\n", type, digestConfig->digestAuthRealm, authenticateDigestNonceNonceb64(nonce), QOP_AUTH, stale ? "true" : "false"); | |
869 | ||
870 | /* in the future, for WWW auth we may want to support the domain entry */ | |
871 | httpHeaderPutStrf(&rep->header, type, "Digest realm=\"%s\", nonce=\"%s\", qop=\"%s\", stale=%s", digestConfig->digestAuthRealm, authenticateDigestNonceNonceb64(nonce), QOP_AUTH, stale ? "true" : "false"); | |
2d70df72 | 872 | } |
873 | ||
c78aa667 | 874 | static void |
2d70df72 | 875 | authenticateDigestUserFree(auth_user_t * auth_user) |
876 | { | |
2f44bd34 | 877 | digest_user_h *digest_user = static_cast < digest_user_h * >(auth_user->scheme_data); |
2d70df72 | 878 | debug(29, 9) ("authenticateDigestFreeUser: Clearing Digest scheme data\n"); |
62e76326 | 879 | |
2d70df72 | 880 | if (!digest_user) |
62e76326 | 881 | return; |
882 | ||
82b045dc | 883 | delete digest_user; |
2d70df72 | 884 | |
82b045dc | 885 | auth_user->scheme_data = NULL; |
886 | } | |
887 | ||
888 | digest_user_h::~digest_user_h() | |
889 | { | |
890 | safe_free(username); | |
891 | ||
892 | dlink_node *link, *tmplink; | |
893 | link = nonces.head; | |
62e76326 | 894 | |
2d70df72 | 895 | while (link) { |
62e76326 | 896 | tmplink = link; |
897 | link = link->next; | |
82b045dc | 898 | dlinkDelete(tmplink, &nonces); |
62e76326 | 899 | authDigestNoncePurge(static_cast < digest_nonce_h * >(tmplink->data)); |
900 | authDigestNonceUnlink(static_cast < digest_nonce_h * >(tmplink->data)); | |
901 | dlinkNodeDelete(tmplink); | |
2d70df72 | 902 | } |
2d70df72 | 903 | } |
904 | ||
905 | static void | |
906 | authenticateDigestHandleReply(void *data, char *reply) | |
907 | { | |
82b045dc | 908 | DigestAuthenticateStateData *replyData = static_cast < DigestAuthenticateStateData * >(data); |
2d70df72 | 909 | auth_user_request_t *auth_user_request; |
910 | digest_request_h *digest_request; | |
911 | digest_user_h *digest_user; | |
2d70df72 | 912 | char *t = NULL; |
fa80a8ef | 913 | void *cbdata; |
2d70df72 | 914 | debug(29, 9) ("authenticateDigestHandleReply: {%s}\n", reply ? reply : "<NULL>"); |
62e76326 | 915 | |
2d70df72 | 916 | if (reply) { |
62e76326 | 917 | if ((t = strchr(reply, ' '))) |
918 | *t = '\0'; | |
919 | ||
920 | if (*reply == '\0') | |
921 | reply = NULL; | |
2d70df72 | 922 | } |
62e76326 | 923 | |
82b045dc | 924 | assert(replyData->auth_user_request != NULL); |
925 | auth_user_request = replyData->auth_user_request; | |
926 | assert(auth_user_request->state() != NULL); | |
927 | digest_request = dynamic_cast < digest_request_h * >(auth_user_request->state()); | |
2f44bd34 | 928 | digest_user = static_cast < digest_user_h * >(auth_user_request->auth_user->scheme_data); |
62e76326 | 929 | |
2d70df72 | 930 | if (reply && (strncasecmp(reply, "ERR", 3) == 0)) |
82b045dc | 931 | digest_request->credentials(digest_request_h::Failed); |
2d70df72 | 932 | else { |
62e76326 | 933 | CvtBin(reply, digest_user->HA1); |
934 | digest_user->HA1created = 1; | |
2d70df72 | 935 | } |
62e76326 | 936 | |
82b045dc | 937 | if (cbdataReferenceValidDone(replyData->data, &cbdata)) |
938 | replyData->handler(cbdata, NULL); | |
62e76326 | 939 | |
82b045dc | 940 | cbdataFree(replyData); |
2d70df72 | 941 | } |
942 | ||
943 | /* Initialize helpers and the like for this auth scheme. Called AFTER parsing the | |
944 | * config file */ | |
945 | static void | |
946 | authDigestInit(authScheme * scheme) | |
947 | { | |
948 | static int init = 0; | |
62e76326 | 949 | |
2d70df72 | 950 | if (digestConfig->authenticate) { |
62e76326 | 951 | authenticateDigestNonceSetup(); |
952 | authdigest_initialised = 1; | |
953 | ||
954 | if (digestauthenticators == NULL) | |
955 | digestauthenticators = helperCreate("digestauthenticator"); | |
956 | ||
957 | digestauthenticators->cmdline = digestConfig->authenticate; | |
958 | ||
959 | digestauthenticators->n_to_start = digestConfig->authenticateChildren; | |
960 | ||
961 | digestauthenticators->ipc_type = IPC_STREAM; | |
962 | ||
963 | helperOpenServers(digestauthenticators); | |
964 | ||
965 | if (!init) { | |
966 | cachemgrRegister("digestauthenticator", "Digest User Authenticator Stats", | |
967 | authenticateDigestStats, 0, 1); | |
968 | init++; | |
969 | } | |
970 | ||
971 | CBDATA_INIT_TYPE(DigestAuthenticateStateData); | |
2d70df72 | 972 | } |
973 | } | |
974 | ||
975 | ||
976 | /* free any allocated configuration details */ | |
977 | void | |
978 | authDigestFreeConfig(authScheme * scheme) | |
979 | { | |
980 | if (digestConfig == NULL) | |
62e76326 | 981 | return; |
982 | ||
2d70df72 | 983 | assert(digestConfig == scheme->scheme_data); |
62e76326 | 984 | |
2d70df72 | 985 | if (digestConfig->authenticate) |
62e76326 | 986 | wordlistDestroy(&digestConfig->authenticate); |
987 | ||
e6ccf245 | 988 | safe_free(digestConfig->digestAuthRealm); |
62e76326 | 989 | |
2d70df72 | 990 | xfree(digestConfig); |
62e76326 | 991 | |
2d70df72 | 992 | digestConfig = NULL; |
993 | } | |
994 | ||
995 | static void | |
996 | authDigestParse(authScheme * scheme, int n_configured, char *param_str) | |
997 | { | |
998 | if (scheme->scheme_data == NULL) { | |
62e76326 | 999 | assert(digestConfig == NULL); |
1000 | /* this is the first param to be found */ | |
1001 | scheme->scheme_data = xmalloc(sizeof(auth_digest_config)); | |
1002 | memset(scheme->scheme_data, 0, sizeof(auth_digest_config)); | |
1003 | digestConfig = static_cast < auth_digest_config * >(scheme->scheme_data); | |
1004 | digestConfig->authenticateChildren = 5; | |
1005 | /* 5 minutes */ | |
1006 | digestConfig->nonceGCInterval = 5 * 60; | |
1007 | /* 30 minutes */ | |
1008 | digestConfig->noncemaxduration = 30 * 60; | |
1009 | /* 50 requests */ | |
1010 | digestConfig->noncemaxuses = 50; | |
f5292c64 | 1011 | /* Not strict nonce count behaviour */ |
1012 | digestConfig->NonceStrictness = 0; | |
1013 | /* Verify nonce count */ | |
1014 | digestConfig->CheckNonceCount = 1; | |
2d70df72 | 1015 | } |
62e76326 | 1016 | |
2f44bd34 | 1017 | digestConfig = static_cast < auth_digest_config * >(scheme->scheme_data); |
62e76326 | 1018 | |
2d70df72 | 1019 | if (strcasecmp(param_str, "program") == 0) { |
62e76326 | 1020 | if (digestConfig->authenticate) |
1021 | wordlistDestroy(&digestConfig->authenticate); | |
1022 | ||
1023 | parse_wordlist(&digestConfig->authenticate); | |
1024 | ||
1025 | requirePathnameExists("authparam digest program", digestConfig->authenticate->key); | |
2d70df72 | 1026 | } else if (strcasecmp(param_str, "children") == 0) { |
62e76326 | 1027 | parse_int(&digestConfig->authenticateChildren); |
2d70df72 | 1028 | } else if (strcasecmp(param_str, "realm") == 0) { |
62e76326 | 1029 | parse_eol(&digestConfig->digestAuthRealm); |
2d70df72 | 1030 | } else if (strcasecmp(param_str, "nonce_garbage_interval") == 0) { |
62e76326 | 1031 | parse_time_t(&digestConfig->nonceGCInterval); |
2d70df72 | 1032 | } else if (strcasecmp(param_str, "nonce_max_duration") == 0) { |
62e76326 | 1033 | parse_time_t(&digestConfig->noncemaxduration); |
2d70df72 | 1034 | } else if (strcasecmp(param_str, "nonce_max_count") == 0) { |
62e76326 | 1035 | parse_int((int *) &digestConfig->noncemaxuses); |
d205783b | 1036 | } else if (strcasecmp(param_str, "nonce_strictness") == 0) { |
62e76326 | 1037 | parse_onoff(&digestConfig->NonceStrictness); |
f5292c64 | 1038 | } else if (strcasecmp(param_str, "check_nonce_count") == 0) { |
1039 | parse_onoff(&digestConfig->CheckNonceCount); | |
1040 | } else if (strcasecmp(param_str, "post_workaround") == 0) { | |
1041 | parse_onoff(&digestConfig->PostWorkaround); | |
2d70df72 | 1042 | } else { |
62e76326 | 1043 | debug(28, 0) ("unrecognised digest auth scheme parameter '%s'\n", param_str); |
2d70df72 | 1044 | } |
1045 | } | |
1046 | ||
1047 | ||
1048 | static void | |
1049 | authenticateDigestStats(StoreEntry * sentry) | |
1050 | { | |
1051 | storeAppendPrintf(sentry, "Digest Authenticator Statistics:\n"); | |
1052 | helperStats(sentry, digestauthenticators); | |
1053 | } | |
1054 | ||
1055 | /* NonceUserUnlink: remove the reference to auth_user and unlink the node from the list */ | |
1056 | ||
c78aa667 | 1057 | static void |
2d70df72 | 1058 | authDigestNonceUserUnlink(digest_nonce_h * nonce) |
1059 | { | |
1060 | digest_user_h *digest_user; | |
1061 | dlink_node *link, *tmplink; | |
62e76326 | 1062 | |
2d70df72 | 1063 | if (!nonce) |
62e76326 | 1064 | return; |
1065 | ||
2d70df72 | 1066 | if (!nonce->auth_user) |
62e76326 | 1067 | return; |
1068 | ||
2f44bd34 | 1069 | digest_user = static_cast < digest_user_h * >(nonce->auth_user->scheme_data); |
62e76326 | 1070 | |
1071 | /* unlink from the user list. Yes we're crossing structures but this is the only | |
2d70df72 | 1072 | * time this code is needed |
1073 | */ | |
1074 | link = digest_user->nonces.head; | |
62e76326 | 1075 | |
2d70df72 | 1076 | while (link) { |
62e76326 | 1077 | tmplink = link; |
1078 | link = link->next; | |
1079 | ||
1080 | if (tmplink->data == nonce) { | |
1081 | dlinkDelete(tmplink, &digest_user->nonces); | |
1082 | authDigestNonceUnlink(static_cast < digest_nonce_h * >(tmplink->data)); | |
1083 | dlinkNodeDelete(tmplink); | |
1084 | link = NULL; | |
1085 | } | |
2d70df72 | 1086 | } |
62e76326 | 1087 | |
2d70df72 | 1088 | /* this reference to auth_user was not locked because freeeing the auth_user frees |
1089 | * the nonce too. | |
1090 | */ | |
1091 | nonce->auth_user = NULL; | |
1092 | } | |
1093 | ||
1094 | /* authDigestUserLinkNonce: add a nonce to a given user's struct */ | |
1095 | ||
c78aa667 | 1096 | static void |
2d70df72 | 1097 | authDigestUserLinkNonce(auth_user_t * auth_user, digest_nonce_h * nonce) |
1098 | { | |
1099 | dlink_node *node; | |
1100 | digest_user_h *digest_user; | |
62e76326 | 1101 | |
2d70df72 | 1102 | if (!auth_user || !nonce) |
62e76326 | 1103 | return; |
1104 | ||
2d70df72 | 1105 | if (!auth_user->scheme_data) |
62e76326 | 1106 | return; |
1107 | ||
2f44bd34 | 1108 | digest_user = static_cast < digest_user_h * >(auth_user->scheme_data); |
62e76326 | 1109 | |
2d70df72 | 1110 | node = digest_user->nonces.head; |
62e76326 | 1111 | |
2d70df72 | 1112 | while (node && (node->data != nonce)) |
62e76326 | 1113 | node = node->next; |
1114 | ||
2d70df72 | 1115 | if (node) |
62e76326 | 1116 | return; |
1117 | ||
2d70df72 | 1118 | node = dlinkNodeNew(); |
62e76326 | 1119 | |
2d70df72 | 1120 | dlinkAddTail(nonce, node, &digest_user->nonces); |
62e76326 | 1121 | |
2d70df72 | 1122 | authDigestNonceLink(nonce); |
62e76326 | 1123 | |
2d70df72 | 1124 | /* ping this nonce to this auth user */ |
1125 | assert((nonce->auth_user == NULL) || (nonce->auth_user = auth_user)); | |
62e76326 | 1126 | |
1127 | /* we don't lock this reference because removing the auth_user removes the | |
2d70df72 | 1128 | * hash too. Of course if that changes we're stuffed so read the code huh? |
1129 | */ | |
1130 | nonce->auth_user = auth_user; | |
1131 | } | |
1132 | ||
1133 | /* authenticateDigestUsername: return a pointer to the username in the */ | |
e6ccf245 | 1134 | static char const * |
2f44bd34 | 1135 | authenticateDigestUsername(auth_user_t const *auth_user) |
2d70df72 | 1136 | { |
2f44bd34 | 1137 | digest_user_h *digest_user = static_cast < digest_user_h * >(auth_user->scheme_data); |
62e76326 | 1138 | |
2d70df72 | 1139 | if (digest_user) |
62e76326 | 1140 | return digest_user->username; |
1141 | ||
2d70df72 | 1142 | return NULL; |
1143 | } | |
1144 | ||
1145 | /* setup the necessary info to log the username */ | |
c78aa667 | 1146 | static void |
2d70df72 | 1147 | authDigestLogUsername(auth_user_request_t * auth_user_request, char *username) |
1148 | { | |
1149 | auth_user_t *auth_user; | |
1150 | digest_user_h *digest_user; | |
1151 | dlink_node *node; | |
1152 | ||
1153 | /* log the username */ | |
1154 | debug(29, 9) ("authBasicDecodeAuth: Creating new user for logging '%s'\n", username); | |
1155 | /* new auth_user */ | |
1156 | auth_user = authenticateAuthUserNew("digest"); | |
1157 | /* new scheme data */ | |
82b045dc | 1158 | digest_user = new digest_user_h; |
2d70df72 | 1159 | /* save the credentials */ |
1160 | digest_user->username = username; | |
1161 | /* link the scheme data in */ | |
1162 | auth_user->scheme_data = digest_user; | |
1163 | /* set the auth_user type */ | |
1164 | auth_user->auth_type = AUTH_BROKEN; | |
1165 | /* link the request to the user */ | |
1166 | auth_user_request->auth_user = auth_user; | |
1167 | /* lock for the auth_user_request link */ | |
1168 | authenticateAuthUserLock(auth_user); | |
1169 | node = dlinkNodeNew(); | |
1170 | dlinkAdd(auth_user_request, node, &auth_user->requests); | |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * Decode a Digest [Proxy-]Auth string, placing the results in the passed | |
1175 | * Auth_user structure. | |
1176 | */ | |
1177 | ||
1178 | static void | |
1179 | authenticateDigestDecodeAuth(auth_user_request_t * auth_user_request, const char *proxy_auth) | |
1180 | { | |
2d70df72 | 1181 | const char *item; |
1182 | const char *p; | |
1183 | const char *pos = NULL; | |
1184 | char *username = NULL; | |
1185 | digest_nonce_h *nonce; | |
1186 | int ilen; | |
1187 | digest_request_h *digest_request; | |
1188 | digest_user_h *digest_user; | |
1189 | auth_user_t *auth_user; | |
1190 | dlink_node *node; | |
1191 | ||
1192 | debug(29, 9) ("authenticateDigestDecodeAuth: beginning\n"); | |
1193 | assert(auth_user_request != NULL); | |
82b045dc | 1194 | assert (auth_user_request->state() == NULL); |
2d70df72 | 1195 | |
82b045dc | 1196 | digest_request = new digest_request_h; |
2d70df72 | 1197 | |
1198 | /* trim DIGEST from string */ | |
62e76326 | 1199 | |
2d70df72 | 1200 | while (!xisspace(*proxy_auth)) |
62e76326 | 1201 | proxy_auth++; |
2d70df72 | 1202 | |
1203 | /* Trim leading whitespace before decoding */ | |
1204 | while (xisspace(*proxy_auth)) | |
62e76326 | 1205 | proxy_auth++; |
2d70df72 | 1206 | |
2f44bd34 | 1207 | String temp(proxy_auth); |
62e76326 | 1208 | |
2d70df72 | 1209 | while (strListGetItem(&temp, ',', &item, &ilen, &pos)) { |
62e76326 | 1210 | if ((p = strchr(item, '=')) && (p - item < ilen)) |
1211 | ilen = p++ - item; | |
1212 | ||
1213 | if (!strncmp(item, "username", ilen)) { | |
1214 | /* white space */ | |
1215 | ||
1216 | while (xisspace(*p)) | |
1217 | p++; | |
1218 | ||
1219 | /* quote mark */ | |
1220 | p++; | |
1221 | ||
1222 | username = xstrndup(p, strchr(p, '"') + 1 - p); | |
1223 | ||
1224 | debug(29, 9) ("authDigestDecodeAuth: Found Username '%s'\n", username); | |
1225 | } else if (!strncmp(item, "realm", ilen)) { | |
1226 | /* white space */ | |
1227 | ||
1228 | while (xisspace(*p)) | |
1229 | p++; | |
1230 | ||
1231 | /* quote mark */ | |
1232 | p++; | |
1233 | ||
1234 | digest_request->realm = xstrndup(p, strchr(p, '"') + 1 - p); | |
1235 | ||
1236 | debug(29, 9) ("authDigestDecodeAuth: Found realm '%s'\n", digest_request->realm); | |
1237 | } else if (!strncmp(item, "qop", ilen)) { | |
1238 | /* white space */ | |
1239 | ||
1240 | while (xisspace(*p)) | |
1241 | p++; | |
1242 | ||
1243 | if (*p == '\"') | |
1244 | /* quote mark */ | |
1245 | p++; | |
1246 | ||
1247 | digest_request->qop = xstrndup(p, strcspn(p, "\" \t\r\n()<>@,;:\\/[]?={}") + 1); | |
1248 | ||
1249 | debug(29, 9) ("authDigestDecodeAuth: Found qop '%s'\n", digest_request->qop); | |
1250 | } else if (!strncmp(item, "algorithm", ilen)) { | |
1251 | /* white space */ | |
1252 | ||
1253 | while (xisspace(*p)) | |
1254 | p++; | |
1255 | ||
1256 | if (*p == '\"') | |
1257 | /* quote mark */ | |
1258 | p++; | |
1259 | ||
1260 | digest_request->algorithm = xstrndup(p, strcspn(p, "\" \t\r\n()<>@,;:\\/[]?={}") + 1); | |
1261 | ||
1262 | debug(29, 9) ("authDigestDecodeAuth: Found algorithm '%s'\n", digest_request->algorithm); | |
1263 | } else if (!strncmp(item, "uri", ilen)) { | |
1264 | /* white space */ | |
1265 | ||
1266 | while (xisspace(*p)) | |
1267 | p++; | |
1268 | ||
1269 | /* quote mark */ | |
1270 | p++; | |
1271 | ||
1272 | digest_request->uri = xstrndup(p, strchr(p, '"') + 1 - p); | |
1273 | ||
1274 | debug(29, 9) ("authDigestDecodeAuth: Found uri '%s'\n", digest_request->uri); | |
1275 | } else if (!strncmp(item, "nonce", ilen)) { | |
1276 | /* white space */ | |
1277 | ||
1278 | while (xisspace(*p)) | |
1279 | p++; | |
1280 | ||
1281 | /* quote mark */ | |
1282 | p++; | |
1283 | ||
1284 | digest_request->nonceb64 = xstrndup(p, strchr(p, '"') + 1 - p); | |
1285 | ||
1286 | debug(29, 9) ("authDigestDecodeAuth: Found nonce '%s'\n", digest_request->nonceb64); | |
1287 | } else if (!strncmp(item, "nc", ilen)) { | |
1288 | /* white space */ | |
1289 | ||
1290 | while (xisspace(*p)) | |
1291 | p++; | |
1292 | ||
1293 | xstrncpy(digest_request->nc, p, 9); | |
1294 | ||
1295 | debug(29, 9) ("authDigestDecodeAuth: Found noncecount '%s'\n", digest_request->nc); | |
1296 | } else if (!strncmp(item, "cnonce", ilen)) { | |
1297 | /* white space */ | |
1298 | ||
1299 | while (xisspace(*p)) | |
1300 | p++; | |
1301 | ||
1302 | /* quote mark */ | |
1303 | p++; | |
1304 | ||
1305 | digest_request->cnonce = xstrndup(p, strchr(p, '"') + 1 - p); | |
1306 | ||
1307 | debug(29, 9) ("authDigestDecodeAuth: Found cnonce '%s'\n", digest_request->cnonce); | |
1308 | } else if (!strncmp(item, "response", ilen)) { | |
1309 | /* white space */ | |
1310 | ||
1311 | while (xisspace(*p)) | |
1312 | p++; | |
1313 | ||
1314 | /* quote mark */ | |
1315 | p++; | |
1316 | ||
1317 | digest_request->response = xstrndup(p, strchr(p, '"') + 1 - p); | |
1318 | ||
1319 | debug(29, 9) ("authDigestDecodeAuth: Found response '%s'\n", digest_request->response); | |
1320 | } | |
2d70df72 | 1321 | } |
62e76326 | 1322 | |
528b2c61 | 1323 | temp.clean(); |
2d70df72 | 1324 | |
1325 | ||
1326 | /* now we validate the data given to us */ | |
1327 | ||
74830fc8 | 1328 | /* |
1329 | * TODO: on invalid parameters we should return 400, not 407. | |
1330 | * Find some clean way of doing this. perhaps return a valid | |
1331 | * struct, and set the direction to clientwards combined with | |
1332 | * a change to the clientwards handling code (ie let the | |
1333 | * clientwards call set the error type (but limited to known | |
1334 | * correct values - 400/401/407 | |
1335 | */ | |
2d70df72 | 1336 | |
1337 | /* first the NONCE count */ | |
62e76326 | 1338 | |
2d70df72 | 1339 | if (digest_request->cnonce && strlen(digest_request->nc) != 8) { |
62e76326 | 1340 | debug(29, 4) ("authenticateDigestDecode: nonce count length invalid\n"); |
1341 | authDigestLogUsername(auth_user_request, username); | |
2d70df72 | 1342 | |
62e76326 | 1343 | /* we don't need the scheme specific data anymore */ |
82b045dc | 1344 | delete digest_request; |
62e76326 | 1345 | return; |
2d70df72 | 1346 | } |
62e76326 | 1347 | |
2d70df72 | 1348 | /* now the nonce */ |
1349 | nonce = authenticateDigestNonceFindNonce(digest_request->nonceb64); | |
62e76326 | 1350 | |
f5292c64 | 1351 | if (!nonce) { |
62e76326 | 1352 | /* we couldn't find a matching nonce! */ |
1353 | debug(29, 4) ("authenticateDigestDecode: Unexpected or invalid nonce recieved\n"); | |
1354 | authDigestLogUsername(auth_user_request, username); | |
1355 | ||
1356 | /* we don't need the scheme specific data anymore */ | |
82b045dc | 1357 | delete digest_request; |
62e76326 | 1358 | return; |
2d70df72 | 1359 | } |
62e76326 | 1360 | |
2d70df72 | 1361 | digest_request->nonce = nonce; |
2d70df72 | 1362 | authDigestNonceLink(nonce); |
1363 | ||
62e76326 | 1364 | /* check the qop is what we expected. Note that for compatability with |
d205783b | 1365 | * RFC 2069 we should support a missing qop. Tough. */ |
62e76326 | 1366 | |
d205783b | 1367 | if (!digest_request->qop || strcmp(digest_request->qop, QOP_AUTH)) { |
62e76326 | 1368 | /* we recieved a qop option we didn't send */ |
1369 | debug(29, 4) ("authenticateDigestDecode: Invalid qop option recieved\n"); | |
1370 | authDigestLogUsername(auth_user_request, username); | |
1371 | ||
1372 | /* we don't need the scheme specific data anymore */ | |
82b045dc | 1373 | delete digest_request; |
62e76326 | 1374 | return; |
2d70df72 | 1375 | } |
62e76326 | 1376 | |
74830fc8 | 1377 | /* we can't check the URI just yet. We'll check it in the |
9bea1d5b | 1378 | * authenticate phase */ |
2d70df72 | 1379 | |
1380 | /* is the response the correct length? */ | |
1381 | ||
1382 | if (!digest_request->response || strlen(digest_request->response) != 32) { | |
62e76326 | 1383 | debug(29, 4) ("authenticateDigestDecode: Response length invalid\n"); |
1384 | authDigestLogUsername(auth_user_request, username); | |
2d70df72 | 1385 | |
62e76326 | 1386 | /* we don't need the scheme specific data anymore */ |
82b045dc | 1387 | delete digest_request; |
62e76326 | 1388 | return; |
2d70df72 | 1389 | } |
62e76326 | 1390 | |
2d70df72 | 1391 | /* do we have a username ? */ |
1392 | if (!username || username[0] == '\0') { | |
62e76326 | 1393 | debug(29, 4) ("authenticateDigestDecode: Empty or not present username\n"); |
1394 | authDigestLogUsername(auth_user_request, username); | |
2d70df72 | 1395 | |
62e76326 | 1396 | /* we don't need the scheme specific data anymore */ |
82b045dc | 1397 | delete digest_request; |
62e76326 | 1398 | return; |
2d70df72 | 1399 | } |
62e76326 | 1400 | |
2d70df72 | 1401 | /* check that we're not being hacked / the username hasn't changed */ |
e6ccf245 | 1402 | if (nonce->auth_user && strcmp(username, nonce->auth_user->username())) { |
62e76326 | 1403 | debug(29, 4) ("authenticateDigestDecode: Username for the nonce does not equal the username for the request\n"); |
1404 | authDigestLogUsername(auth_user_request, username); | |
2d70df72 | 1405 | |
62e76326 | 1406 | /* we don't need the scheme specific data anymore */ |
82b045dc | 1407 | delete digest_request; |
62e76326 | 1408 | return; |
2d70df72 | 1409 | } |
62e76326 | 1410 | |
2d70df72 | 1411 | /* if we got a qop, did we get a cnonce or did we get a cnonce wihtout a qop? */ |
1412 | if ((digest_request->qop && !digest_request->cnonce) | |
62e76326 | 1413 | || (!digest_request->qop && digest_request->cnonce)) { |
1414 | debug(29, 4) ("authenticateDigestDecode: qop without cnonce, or vice versa!\n"); | |
1415 | authDigestLogUsername(auth_user_request, username); | |
1416 | ||
1417 | /* we don't need the scheme specific data anymore */ | |
82b045dc | 1418 | delete digest_request; |
62e76326 | 1419 | return; |
2d70df72 | 1420 | } |
62e76326 | 1421 | |
2d70df72 | 1422 | /* check the algorithm is present and supported */ |
d205783b | 1423 | if (!digest_request->algorithm) |
62e76326 | 1424 | digest_request->algorithm = xstrndup("MD5", 4); |
d205783b | 1425 | else if (strcmp(digest_request->algorithm, "MD5") |
62e76326 | 1426 | && strcmp(digest_request->algorithm, "MD5-sess")) { |
1427 | debug(29, 4) ("authenticateDigestDecode: invalid algorithm specified!\n"); | |
1428 | authDigestLogUsername(auth_user_request, username); | |
1429 | ||
1430 | /* we don't need the scheme specific data anymore */ | |
82b045dc | 1431 | delete digest_request; |
62e76326 | 1432 | return; |
2d70df72 | 1433 | } |
62e76326 | 1434 | |
2d70df72 | 1435 | /* the method we'll check at the authenticate step as well */ |
1436 | ||
1437 | ||
1438 | /* we don't send or parse opaques. Ok so we're flexable ... */ | |
1439 | ||
1440 | /* find the user */ | |
1441 | ||
1442 | if ((auth_user = authDigestUserFindUsername(username)) == NULL) { | |
62e76326 | 1443 | /* the user doesn't exist in the username cache yet */ |
1444 | debug(29, 9) ("authDigestDecodeAuth: Creating new digest user '%s'\n", username); | |
1445 | /* new auth_user */ | |
1446 | auth_user = authenticateAuthUserNew("digest"); | |
1447 | /* new scheme user data */ | |
82b045dc | 1448 | digest_user = new digest_user_h; |
62e76326 | 1449 | /* save the username */ |
1450 | digest_user->username = username; | |
1451 | /* link the primary struct in */ | |
1452 | auth_user->scheme_data = digest_user; | |
1453 | /* set the user type */ | |
1454 | auth_user->auth_type = AUTH_DIGEST; | |
1455 | /* this auth_user struct is the one to get added to the | |
1456 | * username cache */ | |
1457 | /* store user in hash's */ | |
1458 | authenticateUserNameCacheAdd(auth_user); | |
df80d445 | 1459 | |
62e76326 | 1460 | /* |
1461 | * Add the digest to the user so we can tell if a hacking | |
1462 | * or spoofing attack is taking place. We do this by assuming | |
1463 | * the user agent won't change user name without warning. | |
1464 | */ | |
1465 | authDigestUserLinkNonce(auth_user, nonce); | |
2d70df72 | 1466 | } else { |
62e76326 | 1467 | debug(29, 9) ("authDigestDecodeAuth: Found user '%s' in the user cache as '%p'\n", username, auth_user); |
1468 | digest_user = static_cast < digest_user_h * >(auth_user->scheme_data); | |
1469 | xfree(username); | |
2d70df72 | 1470 | } |
62e76326 | 1471 | |
2d70df72 | 1472 | /*link the request and the user */ |
1473 | auth_user_request->auth_user = auth_user; | |
62e76326 | 1474 | |
82b045dc | 1475 | auth_user_request->state(digest_request); |
1476 | ||
1477 | digest_request->authUser (auth_user); | |
62e76326 | 1478 | |
2d70df72 | 1479 | /* lock for the request link */ |
1480 | authenticateAuthUserLock(auth_user); | |
62e76326 | 1481 | |
2d70df72 | 1482 | node = dlinkNodeNew(); |
62e76326 | 1483 | |
2d70df72 | 1484 | dlinkAdd(auth_user_request, node, &auth_user->requests); |
1485 | ||
33272404 | 1486 | debug(29, 9) ("username = '%s'\nrealm = '%s'\nqop = '%s'\nalgorithm = '%s'\nuri = '%s'\nnonce = '%s'\nnc = '%s'\ncnonce = '%s'\nresponse = '%s'\ndigestnonce = '%p'\n", |
62e76326 | 1487 | digest_user->username, digest_request->realm, |
1488 | digest_request->qop, digest_request->algorithm, | |
1489 | digest_request->uri, digest_request->nonceb64, | |
1490 | digest_request->nc, digest_request->cnonce, digest_request->response, nonce); | |
2d70df72 | 1491 | |
1492 | return; | |
1493 | } | |
1494 | ||
1495 | /* send the initial data to a digest authenticator module */ | |
1496 | static void | |
1497 | authenticateDigestStart(auth_user_request_t * auth_user_request, RH * handler, void *data) | |
1498 | { | |
e6ccf245 | 1499 | DigestAuthenticateStateData *r = NULL; |
2d70df72 | 1500 | char buf[8192]; |
1501 | digest_request_h *digest_request; | |
1502 | digest_user_h *digest_user; | |
1503 | assert(auth_user_request); | |
1504 | assert(handler); | |
1505 | assert(auth_user_request->auth_user->auth_type == AUTH_DIGEST); | |
1506 | assert(auth_user_request->auth_user->scheme_data != NULL); | |
82b045dc | 1507 | digest_request = dynamic_cast < digest_request_h * >(auth_user_request->state()); |
1508 | assert(digest_request); | |
2f44bd34 | 1509 | digest_user = static_cast < digest_user_h * >(auth_user_request->auth_user->scheme_data); |
2d70df72 | 1510 | debug(29, 9) ("authenticateStart: '\"%s\":\"%s\"'\n", digest_user->username, |
62e76326 | 1511 | digest_request->realm); |
1512 | ||
2d70df72 | 1513 | if (digestConfig->authenticate == NULL) { |
62e76326 | 1514 | handler(data, NULL); |
1515 | return; | |
2d70df72 | 1516 | } |
62e76326 | 1517 | |
e6ccf245 | 1518 | r = cbdataAlloc(DigestAuthenticateStateData); |
2d70df72 | 1519 | r->handler = handler; |
fa80a8ef | 1520 | r->data = cbdataReference(data); |
2d70df72 | 1521 | r->auth_user_request = auth_user_request; |
1522 | snprintf(buf, 8192, "\"%s\":\"%s\"\n", digest_user->username, digest_request->realm); | |
1523 | helperSubmit(digestauthenticators, buf, authenticateDigestHandleReply, r); | |
1524 | } | |
82b045dc | 1525 | |
1526 | ||
bf5113eb | 1527 | MemPool (*digest_user_h::Pool)(NULL); |
82b045dc | 1528 | void * |
1529 | digest_user_h::operator new (size_t byteCount) | |
1530 | { | |
1531 | /* derived classes with different sizes must implement their own new */ | |
1532 | assert (byteCount == sizeof (digest_user_h)); | |
1533 | ||
1534 | if (!Pool) | |
1535 | Pool = memPoolCreate("digest_user_h", sizeof (digest_user_h)); | |
1536 | ||
1537 | return memPoolAlloc(Pool); | |
1538 | } | |
1539 | ||
1540 | void | |
1541 | digest_user_h::operator delete (void *address) | |
1542 | { | |
1543 | memPoolFree (Pool, address); | |
1544 | } | |
1545 | ||
82b045dc | 1546 | digest_user_h::digest_user_h () : username (NULL), HA1created (0) |
1547 | {} | |
1548 | ||
bf5113eb | 1549 | MemPool (*digest_request_h::Pool)(NULL); |
82b045dc | 1550 | void * |
1551 | digest_request_h::operator new (size_t byteCount) | |
1552 | { | |
1553 | /* derived classes with different sizes must implement their own new */ | |
1554 | assert (byteCount == sizeof (digest_request_h)); | |
1555 | ||
1556 | if (!Pool) | |
1557 | Pool = memPoolCreate("digest_request_h", sizeof (digest_request_h)); | |
1558 | ||
1559 | return memPoolAlloc(Pool); | |
1560 | } | |
1561 | ||
1562 | void | |
1563 | digest_request_h::operator delete (void *address) | |
1564 | { | |
1565 | memPoolFree (Pool, address); | |
1566 | } | |
1567 | ||
82b045dc | 1568 | digest_request_h::digest_request_h () : theUser (NULL) |
1569 | , credentials_ok (Unchecked) | |
1570 | {} | |
1571 | ||
1572 | digest_request_h::digest_request_h (auth_user_t *aUser) : theUser (aUser) | |
1573 | , credentials_ok (Unchecked) | |
1574 | { | |
1575 | authenticateAuthUserLock(theUser); | |
1576 | } | |
1577 | ||
1578 | auth_user_t * | |
1579 | digest_request_h::authUser() const | |
1580 | { | |
1581 | return theUser; | |
1582 | } | |
1583 | ||
1584 | void | |
1585 | digest_request_h::authUser(auth_user_t *aUser) | |
1586 | { | |
1587 | assert (!authUser()); | |
1588 | authenticateAuthUserLock(aUser); | |
1589 | theUser = aUser; | |
1590 | } | |
1591 | ||
1592 | digest_request_h::CredentialsState | |
1593 | digest_request_h::credentials() const | |
1594 | { | |
1595 | return credentials_ok; | |
1596 | ||
1597 | } | |
1598 | ||
1599 | void | |
1600 | digest_request_h::credentials(CredentialsState newCreds) | |
1601 | { | |
1602 | credentials_ok = newCreds; | |
1603 | } |