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b423cd4c | 1 | /* |
2e4ff8af | 2 | * "$Id: auth.c 6947 2007-09-12 21:09:49Z mike $" |
ef416fc2 | 3 | * |
4 | * Authorization routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
080811b1 | 6 | * Copyright 2007-2008 by Apple Inc. |
f7deaa1a | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
8 | * | |
9 | * This file contains Kerberos support code, copyright 2006 by | |
10 | * Jelmer Vernooij. | |
ef416fc2 | 11 | * |
12 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 13 | * property of Apple Inc. and are protected by Federal copyright |
14 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
15 | * which should have been included with this file. If this file is | |
16 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 17 | * |
18 | * Contents: | |
19 | * | |
20 | * cupsdAddLocation() - Add a location for authorization. | |
21 | * cupsdAddName() - Add a name to a location... | |
22 | * cupsdAllowHost() - Add a host name that is allowed to access the | |
23 | * location. | |
080811b1 MS |
24 | * cupsdAllowIP() - Add an IP address or network that is allowed to |
25 | * access the location. | |
89d46774 | 26 | * cupsdAuthorize() - Validate any authorization credentials. |
080811b1 MS |
27 | * cupsdCheckAccess() - Check whether the given address is allowed to |
28 | * access a location. | |
ef416fc2 | 29 | * cupsdCheckAuth() - Check authorization masks. |
30 | * cupsdCheckGroup() - Check for a user's group membership. | |
31 | * cupsdCopyLocation() - Make a copy of a location... | |
89d46774 | 32 | * cupsdDeleteAllLocations() - Free all memory used for location |
33 | * authorization. | |
ef416fc2 | 34 | * cupsdDeleteLocation() - Free all memory used by a location. |
89d46774 | 35 | * cupsdDenyHost() - Add a host name that is not allowed to access |
36 | * the location. | |
37 | * cupsdDenyIP() - Add an IP address or network that is not | |
38 | * allowed to access the location. | |
ef416fc2 | 39 | * cupsdFindBest() - Find the location entry that best matches the |
40 | * resource. | |
41 | * cupsdFindLocation() - Find the named location. | |
ef416fc2 | 42 | * cupsdIsAuthorized() - Check to see if the user is authorized... |
43 | * add_allow() - Add an allow mask to the location. | |
44 | * add_deny() - Add a deny mask to the location. | |
080811b1 MS |
45 | * check_authref() - Check if an authorization services reference |
46 | * has the supplied right. | |
bd7854cb | 47 | * compare_locations() - Compare two locations. |
ef416fc2 | 48 | * cups_crypt() - Encrypt the password using the DES or MD5 |
49 | * algorithms, as needed. | |
f7deaa1a | 50 | * get_gss_creds() - Obtain GSS credentials. |
e1d6a774 | 51 | * get_md5_password() - Get an MD5 password. |
ef416fc2 | 52 | * pam_func() - PAM conversation function. |
53 | * to64() - Base64-encode an integer value... | |
54 | */ | |
55 | ||
56 | /* | |
57 | * Include necessary headers... | |
58 | */ | |
59 | ||
60 | #include "cupsd.h" | |
61 | #include <grp.h> | |
62 | #ifdef HAVE_SHADOW_H | |
63 | # include <shadow.h> | |
64 | #endif /* HAVE_SHADOW_H */ | |
65 | #ifdef HAVE_CRYPT_H | |
66 | # include <crypt.h> | |
67 | #endif /* HAVE_CRYPT_H */ | |
68 | #if HAVE_LIBPAM | |
69 | # ifdef HAVE_PAM_PAM_APPL_H | |
70 | # include <pam/pam_appl.h> | |
71 | # else | |
72 | # include <security/pam_appl.h> | |
73 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
74 | #endif /* HAVE_LIBPAM */ | |
75 | #ifdef HAVE_USERSEC_H | |
76 | # include <usersec.h> | |
77 | #endif /* HAVE_USERSEC_H */ | |
bd7854cb | 78 | #ifdef HAVE_MEMBERSHIP_H |
79 | # include <membership.h> | |
80 | #endif /* HAVE_MEMBERSHIP_H */ | |
f7deaa1a | 81 | #ifdef HAVE_AUTHORIZATION_H |
82 | # include <Security/AuthorizationTags.h> | |
83 | # ifdef HAVE_SECBASEPRIV_H | |
84 | # include <Security/SecBasePriv.h> | |
85 | # else | |
86 | extern const char *cssmErrorString(int error); | |
87 | # endif /* HAVE_SECBASEPRIV_H */ | |
88 | #endif /* HAVE_AUTHORIZATION_H */ | |
db1f069b MS |
89 | #ifdef HAVE_SYS_PARAM_H |
90 | # include <sys/param.h> | |
91 | #endif /* HAVE_SYS_PARAM_H */ | |
bc44d920 | 92 | #ifdef HAVE_SYS_UCRED_H |
93 | # include <sys/ucred.h> | |
94 | typedef struct xucred cupsd_ucred_t; | |
95 | # define CUPSD_UCRED_UID(c) (c).cr_uid | |
96 | #else | |
97 | typedef struct ucred cupsd_ucred_t; | |
98 | # define CUPSD_UCRED_UID(c) (c).uid | |
99 | #endif /* HAVE_SYS_UCRED_H */ | |
ef416fc2 | 100 | |
101 | ||
102 | /* | |
103 | * Local functions... | |
104 | */ | |
105 | ||
106 | static cupsd_authmask_t *add_allow(cupsd_location_t *loc); | |
107 | static cupsd_authmask_t *add_deny(cupsd_location_t *loc); | |
f7deaa1a | 108 | #ifdef HAVE_AUTHORIZATION_H |
109 | static int check_authref(cupsd_client_t *con, const char *right); | |
110 | #endif /* HAVE_AUTHORIZATION_H */ | |
bd7854cb | 111 | static int compare_locations(cupsd_location_t *a, |
112 | cupsd_location_t *b); | |
d09495fa | 113 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 114 | static char *cups_crypt(const char *pw, const char *salt); |
d09495fa | 115 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
f7deaa1a | 116 | #ifdef HAVE_GSSAPI |
117 | static gss_cred_id_t get_gss_creds(const char *service_name); | |
118 | #endif /* HAVE_GSSAPI */ | |
e1d6a774 | 119 | static char *get_md5_password(const char *username, |
120 | const char *group, char passwd[33]); | |
ef416fc2 | 121 | #if HAVE_LIBPAM |
122 | static int pam_func(int, const struct pam_message **, | |
123 | struct pam_response **, void *); | |
f7deaa1a | 124 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 125 | static void to64(char *s, unsigned long v, int n); |
126 | #endif /* HAVE_LIBPAM */ | |
127 | ||
128 | ||
129 | /* | |
130 | * Local structures... | |
131 | */ | |
132 | ||
133 | #if HAVE_LIBPAM | |
134 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
135 | { | |
136 | char username[33], /* Username string */ | |
137 | password[33]; /* Password string */ | |
138 | } cupsd_authdata_t; | |
139 | #endif /* HAVE_LIBPAM */ | |
140 | ||
141 | ||
142 | /* | |
143 | * Local globals... | |
144 | */ | |
145 | ||
f301802f | 146 | #if defined(__hpux) && HAVE_LIBPAM |
b423cd4c | 147 | static cupsd_authdata_t *auth_data; /* Current client being authenticated */ |
ef416fc2 | 148 | #endif /* __hpux && HAVE_LIBPAM */ |
149 | ||
150 | ||
151 | /* | |
152 | * 'cupsdAddLocation()' - Add a location for authorization. | |
153 | */ | |
154 | ||
155 | cupsd_location_t * /* O - Pointer to new location record */ | |
156 | cupsdAddLocation(const char *location) /* I - Location path */ | |
157 | { | |
158 | cupsd_location_t *temp; /* New location */ | |
159 | ||
160 | ||
161 | /* | |
bd7854cb | 162 | * Make sure the locations array is created... |
ef416fc2 | 163 | */ |
164 | ||
bd7854cb | 165 | if (!Locations) |
166 | Locations = cupsArrayNew((cups_array_func_t)compare_locations, NULL); | |
ef416fc2 | 167 | |
bd7854cb | 168 | if (!Locations) |
ef416fc2 | 169 | return (NULL); |
170 | ||
bd7854cb | 171 | /* |
172 | * Try to allocate memory for the new location. | |
173 | */ | |
174 | ||
175 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) | |
176 | return (NULL); | |
ef416fc2 | 177 | |
178 | /* | |
179 | * Initialize the record and copy the name over... | |
180 | */ | |
181 | ||
91c84a35 MS |
182 | if ((temp->location = strdup(location)) == NULL) |
183 | { | |
184 | free(temp); | |
185 | return (NULL); | |
186 | } | |
187 | ||
188 | temp->length = strlen(temp->location); | |
ef416fc2 | 189 | |
bd7854cb | 190 | cupsArrayAdd(Locations, temp); |
191 | ||
192 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: added location \'%s\'", | |
ef416fc2 | 193 | location); |
194 | ||
195 | /* | |
196 | * Return the new record... | |
197 | */ | |
198 | ||
199 | return (temp); | |
200 | } | |
201 | ||
202 | ||
203 | /* | |
204 | * 'cupsdAddName()' - Add a name to a location... | |
205 | */ | |
206 | ||
207 | void | |
208 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
209 | char *name) /* I - Name to add */ | |
210 | { | |
211 | char **temp; /* Pointer to names array */ | |
212 | ||
213 | ||
214 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", | |
215 | loc, name); | |
216 | ||
217 | if (loc->num_names == 0) | |
218 | temp = malloc(sizeof(char *)); | |
219 | else | |
220 | temp = realloc(loc->names, (loc->num_names + 1) * sizeof(char *)); | |
221 | ||
222 | if (temp == NULL) | |
223 | { | |
224 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to add name to location %s: %s", | |
e1d6a774 | 225 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 226 | return; |
227 | } | |
228 | ||
229 | loc->names = temp; | |
230 | ||
231 | if ((temp[loc->num_names] = strdup(name)) == NULL) | |
232 | { | |
233 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
234 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 235 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 236 | return; |
237 | } | |
238 | ||
239 | loc->num_names ++; | |
240 | } | |
241 | ||
242 | ||
243 | /* | |
244 | * 'cupsdAllowHost()' - Add a host name that is allowed to access the location. | |
245 | */ | |
246 | ||
247 | void | |
248 | cupsdAllowHost(cupsd_location_t *loc, /* I - Location to add to */ | |
249 | char *name) /* I - Name of host or domain to add */ | |
250 | { | |
251 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
252 | char ifname[32], /* Interface name */ | |
253 | *ifptr; /* Pointer to end of name */ | |
254 | ||
255 | ||
256 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAllowHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 257 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 258 | |
259 | if ((temp = add_allow(loc)) == NULL) | |
260 | return; | |
261 | ||
bd7854cb | 262 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 263 | { |
264 | /* | |
265 | * Allow *interface*... | |
266 | */ | |
267 | ||
268 | temp->type = AUTH_INTERFACE; | |
269 | temp->mask.name.name = strdup("*"); | |
270 | temp->mask.name.length = 1; | |
271 | } | |
bd7854cb | 272 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 273 | { |
274 | /* | |
275 | * Allow *interface*... | |
276 | */ | |
277 | ||
278 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
279 | ||
280 | ifptr = ifname + strlen(ifname); | |
281 | ||
282 | if (ifptr[-1] == ')') | |
283 | { | |
284 | ifptr --; | |
285 | *ifptr = '\0'; | |
286 | } | |
287 | ||
288 | temp->type = AUTH_INTERFACE; | |
289 | temp->mask.name.name = strdup(ifname); | |
290 | temp->mask.name.length = ifptr - ifname; | |
291 | } | |
292 | else | |
293 | { | |
294 | /* | |
295 | * Allow name... | |
296 | */ | |
297 | ||
298 | temp->type = AUTH_NAME; | |
299 | temp->mask.name.name = strdup(name); | |
300 | temp->mask.name.length = strlen(name); | |
301 | } | |
302 | } | |
303 | ||
304 | ||
305 | /* | |
306 | * 'cupsdAllowIP()' - Add an IP address or network that is allowed to access | |
307 | * the location. | |
308 | */ | |
309 | ||
310 | void | |
311 | cupsdAllowIP(cupsd_location_t *loc, /* I - Location to add to */ | |
312 | unsigned address[4], /* I - IP address to add */ | |
313 | unsigned netmask[4]) /* I - Netmask of address */ | |
314 | { | |
315 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
316 | ||
317 | ||
318 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
319 | "cupsdAllowIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 320 | loc, loc->location ? loc->location : "nil", |
321 | address[0], address[1], address[2], address[3], | |
322 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 323 | |
324 | if ((temp = add_allow(loc)) == NULL) | |
325 | return; | |
326 | ||
327 | temp->type = AUTH_IP; | |
328 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
329 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
330 | } | |
331 | ||
332 | ||
333 | /* | |
334 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
335 | */ | |
336 | ||
337 | void | |
338 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
339 | { | |
340 | int type; /* Authentication type */ | |
f7deaa1a | 341 | const char *authorization; /* Pointer into Authorization string */ |
342 | char *ptr, /* Pointer into string */ | |
db1f069b | 343 | username[256], /* Username string */ |
ef416fc2 | 344 | password[33]; /* Password string */ |
345 | const char *localuser; /* Certificate username */ | |
346 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ | |
347 | md5[33], /* MD5 password */ | |
348 | basicmd5[33]; /* MD5 of Basic password */ | |
349 | static const char * const states[] = /* HTTP client states... */ | |
350 | { | |
351 | "WAITING", | |
352 | "OPTIONS", | |
353 | "GET", | |
354 | "GET", | |
355 | "HEAD", | |
356 | "POST", | |
357 | "POST", | |
358 | "POST", | |
359 | "PUT", | |
360 | "PUT", | |
361 | "DELETE", | |
362 | "TRACE", | |
363 | "CLOSE", | |
364 | "STATUS" | |
365 | }; | |
366 | ||
367 | ||
368 | /* | |
369 | * Locate the best matching location so we know what kind of | |
370 | * authentication to expect... | |
371 | */ | |
372 | ||
373 | con->best = cupsdFindBest(con->uri, con->http.state); | |
2fb76298 | 374 | con->type = AUTH_NONE; |
ef416fc2 | 375 | |
376 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
377 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
378 | con->uri, con->best, con->best ? con->best->location : ""); | |
379 | ||
380 | if (con->best && con->best->type != AUTH_NONE) | |
7ff4fea9 MS |
381 | { |
382 | if (con->best->type == AUTH_DEFAULT) | |
383 | type = DefaultAuthType; | |
384 | else | |
385 | type = con->best->type; | |
386 | } | |
ef416fc2 | 387 | else |
388 | type = DefaultAuthType; | |
389 | ||
390 | /* | |
391 | * Decode the Authorization string... | |
392 | */ | |
393 | ||
f7deaa1a | 394 | authorization = httpGetField(&con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 395 | |
396 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
397 | authorization); | |
398 | ||
399 | username[0] = '\0'; | |
400 | password[0] = '\0'; | |
401 | ||
f7deaa1a | 402 | #ifdef HAVE_AUTHORIZATION_H |
403 | if (con->authref) | |
404 | { | |
405 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
406 | con->authref = NULL; | |
407 | } | |
408 | #endif /* HAVE_AUTHORIZATION_H */ | |
409 | ||
2fb76298 | 410 | if (!*authorization) |
ef416fc2 | 411 | { |
412 | /* | |
413 | * No authorization data provided, return early... | |
414 | */ | |
415 | ||
416 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
417 | "cupsdAuthorize: No authentication data provided."); | |
418 | return; | |
419 | } | |
f7deaa1a | 420 | #ifdef HAVE_AUTHORIZATION_H |
421 | else if (!strncmp(authorization, "AuthRef", 6) && | |
422 | !strcasecmp(con->http.hostname, "localhost")) | |
423 | { | |
424 | OSStatus status; /* Status */ | |
425 | int authlen; /* Auth string length */ | |
426 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
427 | ||
428 | /* | |
429 | * Get the Authorization Services data... | |
430 | */ | |
431 | ||
432 | authorization += 7; | |
433 | while (isspace(*authorization & 255)) | |
434 | authorization ++; | |
435 | ||
436 | authlen = sizeof(nonce); | |
437 | httpDecode64_2(nonce, &authlen, authorization); | |
438 | ||
439 | if (authlen != kAuthorizationExternalFormLength) | |
440 | { | |
441 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 442 | "External Authorization reference size is incorrect!"); |
f7deaa1a | 443 | return; |
444 | } | |
445 | ||
446 | if ((status = AuthorizationCreateFromExternalForm( | |
447 | (AuthorizationExternalForm *)nonce, &con->authref)) != 0) | |
448 | { | |
449 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 450 | "AuthorizationCreateFromExternalForm returned %d (%s)", |
f7deaa1a | 451 | (int)status, cssmErrorString(status)); |
452 | return; | |
453 | } | |
454 | ||
455 | if ((status = AuthorizationCopyInfo(con->authref, | |
456 | kAuthorizationEnvironmentUsername, | |
457 | &authinfo)) != 0) | |
458 | { | |
459 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 460 | "AuthorizationCopyInfo returned %d (%s)", |
f7deaa1a | 461 | (int)status, cssmErrorString(status)); |
462 | return; | |
463 | } | |
464 | ||
465 | if (authinfo->count == 1) | |
466 | strlcpy(username, authinfo->items[0].value, sizeof(username)); | |
467 | ||
355e94dc MS |
468 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
469 | "cupsdAuthorize: Authorized as %s using AuthRef", | |
470 | username); | |
471 | ||
f7deaa1a | 472 | AuthorizationFreeItemSet(authinfo); |
2fb76298 MS |
473 | |
474 | con->type = AUTH_BASIC; | |
f7deaa1a | 475 | } |
476 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 477 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
478 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
479 | con->http.hostaddr->addr.sa_family == AF_LOCAL) | |
480 | { | |
481 | /* | |
482 | * Use peer credentials from domain socket connection... | |
483 | */ | |
484 | ||
485 | struct passwd *pwd; /* Password entry for this user */ | |
486 | cupsd_ucred_t peercred; /* Peer credentials */ | |
487 | socklen_t peersize; /* Size of peer credentials */ | |
488 | ||
489 | ||
490 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
491 | { | |
492 | cupsdLogMessage(CUPSD_LOG_ERROR, "User \"%s\" does not exist!", | |
493 | authorization + 9); | |
494 | return; | |
495 | } | |
496 | ||
497 | peersize = sizeof(peercred); | |
498 | ||
499 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) | |
500 | { | |
501 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
502 | strerror(errno)); | |
503 | return; | |
504 | } | |
505 | ||
506 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
507 | { | |
508 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
509 | "Invalid peer credentials for \"%s\" - got %d, " | |
510 | "expected %d!", authorization + 9, | |
511 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); | |
512 | # ifdef HAVE_SYS_UCRED_H | |
513 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_version=%d", | |
514 | peercred.cr_version); | |
515 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_uid=%d", | |
516 | peercred.cr_uid); | |
517 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_ngroups=%d", | |
518 | peercred.cr_ngroups); | |
519 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_groups[0]=%d", | |
520 | peercred.cr_groups[0]); | |
521 | # endif /* HAVE_SYS_UCRED_H */ | |
522 | return; | |
523 | } | |
524 | ||
525 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc MS |
526 | |
527 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
528 | "cupsdAuthorize: Authorized as %s using PeerCred", | |
529 | username); | |
2fb76298 MS |
530 | |
531 | con->type = AUTH_BASIC; | |
bc44d920 | 532 | } |
533 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 534 | else if (!strncmp(authorization, "Local", 5) && |
535 | !strcasecmp(con->http.hostname, "localhost")) | |
536 | { | |
537 | /* | |
538 | * Get Local certificate authentication data... | |
539 | */ | |
540 | ||
541 | authorization += 5; | |
80ca4592 | 542 | while (isspace(*authorization & 255)) |
ef416fc2 | 543 | authorization ++; |
544 | ||
545 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
355e94dc | 546 | { |
ef416fc2 | 547 | strlcpy(username, localuser, sizeof(username)); |
355e94dc MS |
548 | |
549 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
550 | "cupsdAuthorize: Authorized as %s using Local", | |
551 | username); | |
552 | } | |
ef416fc2 | 553 | else |
554 | { | |
555 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
556 | "cupsdAuthorize: Local authentication certificate not " | |
557 | "found!"); | |
558 | return; | |
559 | } | |
2fb76298 MS |
560 | |
561 | con->type = AUTH_BASIC; | |
ef416fc2 | 562 | } |
2fb76298 | 563 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 564 | { |
565 | /* | |
566 | * Get the Basic authentication data... | |
567 | */ | |
568 | ||
569 | int userlen; /* Username:password length */ | |
570 | ||
571 | ||
572 | authorization += 5; | |
80ca4592 | 573 | while (isspace(*authorization & 255)) |
ef416fc2 | 574 | authorization ++; |
575 | ||
576 | userlen = sizeof(username); | |
577 | httpDecode64_2(username, &userlen, authorization); | |
578 | ||
579 | /* | |
580 | * Pull the username and password out... | |
581 | */ | |
582 | ||
583 | if ((ptr = strchr(username, ':')) == NULL) | |
584 | { | |
585 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
586 | "cupsdAuthorize: Missing Basic password!"); | |
587 | return; | |
588 | } | |
589 | ||
590 | *ptr++ = '\0'; | |
591 | ||
592 | if (!username[0]) | |
593 | { | |
594 | /* | |
595 | * Username must not be empty... | |
596 | */ | |
597 | ||
598 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
599 | "cupsdAuthorize: Empty Basic username!"); | |
600 | return; | |
601 | } | |
602 | ||
603 | if (!*ptr) | |
604 | { | |
605 | /* | |
606 | * Password must not be empty... | |
607 | */ | |
608 | ||
609 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
610 | "cupsdAuthorize: Empty Basic password!"); | |
611 | return; | |
612 | } | |
613 | ||
614 | strlcpy(password, ptr, sizeof(password)); | |
615 | ||
616 | /* | |
617 | * Validate the username and password... | |
618 | */ | |
619 | ||
620 | switch (type) | |
621 | { | |
2fb76298 | 622 | default : |
ef416fc2 | 623 | case AUTH_BASIC : |
624 | { | |
625 | #if HAVE_LIBPAM | |
626 | /* | |
627 | * Only use PAM to do authentication. This supports MD5 | |
628 | * passwords, among other things... | |
629 | */ | |
630 | ||
631 | pam_handle_t *pamh; /* PAM authentication handle */ | |
632 | int pamerr; /* PAM error code */ | |
633 | struct pam_conv pamdata;/* PAM conversation data */ | |
634 | cupsd_authdata_t data; /* Authentication data */ | |
635 | ||
636 | ||
637 | strlcpy(data.username, username, sizeof(data.username)); | |
638 | strlcpy(data.password, password, sizeof(data.password)); | |
639 | ||
07725fee | 640 | # if defined(__sun) || defined(__hpux) |
e1d6a774 | 641 | pamdata.conv = (int (*)(int, struct pam_message **, |
642 | struct pam_response **, | |
643 | void *))pam_func; | |
644 | # else | |
ef416fc2 | 645 | pamdata.conv = pam_func; |
07725fee | 646 | # endif /* __sun || __hpux */ |
ef416fc2 | 647 | pamdata.appdata_ptr = &data; |
648 | ||
649 | # ifdef __hpux | |
650 | /* | |
651 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
652 | * more info... | |
653 | */ | |
654 | ||
655 | auth_data = &data; | |
656 | # endif /* __hpux */ | |
657 | ||
658 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
659 | if (pamerr != PAM_SUCCESS) | |
660 | { | |
661 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
662 | "cupsdAuthorize: pam_start() returned %d (%s)!\n", | |
663 | pamerr, pam_strerror(pamh, pamerr)); | |
664 | pam_end(pamh, 0); | |
665 | return; | |
666 | } | |
667 | ||
a4924f6c MS |
668 | # if defined(HAVE_PAM_SET_ITEM) && defined(PAM_RHOST) |
669 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http.hostname); | |
670 | if (pamerr != PAM_SUCCESS) | |
671 | cupsdLogMessage(CUPSD_LOG_WARN, | |
672 | "cupsdAuthorize: pam_set_item() returned %d " | |
673 | "(%s)!\n", pamerr, pam_strerror(pamh, pamerr)); | |
674 | # endif /* HAVE_PAM_SET_ITEM && PAM_RHOST */ | |
675 | ||
ef416fc2 | 676 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
677 | if (pamerr != PAM_SUCCESS) | |
678 | { | |
679 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
680 | "cupsdAuthorize: pam_authenticate() returned %d " | |
681 | "(%s)!\n", | |
682 | pamerr, pam_strerror(pamh, pamerr)); | |
683 | pam_end(pamh, 0); | |
684 | return; | |
685 | } | |
686 | ||
687 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); | |
688 | if (pamerr != PAM_SUCCESS) | |
689 | { | |
690 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
691 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
692 | "(%s)!\n", | |
693 | pamerr, pam_strerror(pamh, pamerr)); | |
694 | pam_end(pamh, 0); | |
695 | return; | |
696 | } | |
697 | ||
698 | pam_end(pamh, PAM_SUCCESS); | |
699 | ||
700 | #elif defined(HAVE_USERSEC_H) | |
701 | /* | |
702 | * Use AIX authentication interface... | |
703 | */ | |
704 | ||
705 | char *authmsg; /* Authentication message */ | |
ef416fc2 | 706 | int reenter; /* ??? */ |
707 | ||
708 | ||
709 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
710 | "cupsdAuthorize: AIX authenticate of username \"%s\"", | |
711 | username); | |
712 | ||
713 | reenter = 1; | |
714 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
715 | { | |
716 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
717 | "cupsdAuthorize: Unable to authenticate username " | |
718 | "\"%s\": %s", | |
719 | username, strerror(errno)); | |
720 | return; | |
721 | } | |
722 | ||
723 | #else | |
724 | /* | |
725 | * Use normal UNIX password file-based authentication... | |
726 | */ | |
727 | ||
728 | char *pass; /* Encrypted password */ | |
729 | struct passwd *pw; /* User password data */ | |
730 | # ifdef HAVE_SHADOW_H | |
731 | struct spwd *spw; /* Shadow password data */ | |
732 | # endif /* HAVE_SHADOW_H */ | |
733 | ||
734 | ||
735 | pw = getpwnam(username); /* Get the current password */ | |
736 | endpwent(); /* Close the password file */ | |
737 | ||
738 | if (!pw) | |
739 | { | |
740 | /* | |
741 | * No such user... | |
742 | */ | |
743 | ||
744 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
745 | "cupsdAuthorize: Unknown username \"%s\"!", | |
746 | username); | |
80ca4592 | 747 | return; |
ef416fc2 | 748 | } |
749 | ||
750 | # ifdef HAVE_SHADOW_H | |
751 | spw = getspnam(username); | |
752 | endspent(); | |
753 | ||
754 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
755 | { | |
756 | /* | |
757 | * Don't allow blank passwords! | |
758 | */ | |
759 | ||
760 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
761 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
762 | "password!", username); | |
763 | return; | |
764 | } | |
765 | ||
766 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
767 | # else | |
768 | if (!pw->pw_passwd[0]) | |
769 | # endif /* HAVE_SHADOW_H */ | |
770 | { | |
771 | /* | |
772 | * Don't allow blank passwords! | |
773 | */ | |
774 | ||
775 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
776 | "cupsdAuthorize: Username \"%s\" has no password!", | |
777 | username); | |
778 | return; | |
779 | } | |
780 | ||
781 | /* | |
782 | * OK, the password isn't blank, so compare with what came from the | |
783 | * client... | |
784 | */ | |
785 | ||
786 | pass = cups_crypt(password, pw->pw_passwd); | |
787 | ||
788 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
789 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
790 | pw->pw_passwd, pass); | |
791 | ||
792 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
793 | { | |
794 | # ifdef HAVE_SHADOW_H | |
795 | if (spw) | |
796 | { | |
797 | pass = cups_crypt(password, spw->sp_pwdp); | |
798 | ||
799 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
800 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
801 | spw->sp_pwdp, pass); | |
802 | ||
803 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
804 | { | |
805 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
806 | "cupsdAuthorize: Authentication failed for " | |
807 | "user \"%s\"!", | |
808 | username); | |
809 | return; | |
810 | } | |
811 | } | |
812 | else | |
813 | # endif /* HAVE_SHADOW_H */ | |
814 | { | |
815 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
816 | "cupsdAuthorize: Authentication failed for " | |
817 | "user \"%s\"!", | |
818 | username); | |
819 | return; | |
820 | } | |
821 | } | |
822 | #endif /* HAVE_LIBPAM */ | |
823 | } | |
355e94dc MS |
824 | |
825 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
826 | "cupsdAuthorize: Authorized as %s using Basic", | |
827 | username); | |
ef416fc2 | 828 | break; |
829 | ||
830 | case AUTH_BASICDIGEST : | |
831 | /* | |
832 | * Do Basic authentication with the Digest password file... | |
833 | */ | |
834 | ||
e1d6a774 | 835 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 836 | { |
837 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
838 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
839 | username); | |
840 | return; | |
841 | } | |
842 | ||
843 | httpMD5(username, "CUPS", password, basicmd5); | |
844 | ||
845 | if (strcmp(md5, basicmd5)) | |
846 | { | |
847 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
848 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
849 | username); | |
850 | return; | |
851 | } | |
355e94dc MS |
852 | |
853 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
854 | "cupsdAuthorize: Authorized as %s using BasicDigest", | |
855 | username); | |
ef416fc2 | 856 | break; |
857 | } | |
2fb76298 MS |
858 | |
859 | con->type = type; | |
ef416fc2 | 860 | } |
2fb76298 | 861 | else if (!strncmp(authorization, "Digest", 6)) |
ef416fc2 | 862 | { |
863 | /* | |
864 | * Get the username, password, and nonce from the Digest attributes... | |
865 | */ | |
866 | ||
867 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
868 | username, sizeof(username)) || !username[0]) | |
869 | { | |
870 | /* | |
871 | * Username must not be empty... | |
872 | */ | |
873 | ||
874 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
875 | "cupsdAuthorize: Empty or missing Digest username!"); | |
876 | return; | |
877 | } | |
878 | ||
879 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
880 | password, sizeof(password)) || !password[0]) | |
881 | { | |
882 | /* | |
883 | * Password must not be empty... | |
884 | */ | |
885 | ||
886 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
887 | "cupsdAuthorize: Empty or missing Digest password!"); | |
888 | return; | |
889 | } | |
890 | ||
891 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
892 | nonce)) | |
893 | { | |
894 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
895 | "cupsdAuthorize: No nonce value for Digest " | |
896 | "authentication!"); | |
897 | return; | |
898 | } | |
899 | ||
900 | if (strcmp(con->http.hostname, nonce)) | |
901 | { | |
902 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
903 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
904 | "got \"%s\"!", con->http.hostname, nonce); | |
905 | return; | |
906 | } | |
907 | ||
908 | /* | |
909 | * Validate the username and password... | |
910 | */ | |
911 | ||
e1d6a774 | 912 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 913 | { |
914 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
915 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
916 | username); | |
917 | return; | |
918 | } | |
919 | ||
920 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
921 | ||
922 | if (strcmp(md5, password)) | |
923 | { | |
924 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
925 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
926 | username); | |
927 | return; | |
928 | } | |
355e94dc MS |
929 | |
930 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
931 | "cupsdAuthorize: Authorized as %s using Digest", | |
932 | username); | |
2fb76298 MS |
933 | |
934 | con->type = AUTH_DIGEST; | |
ef416fc2 | 935 | } |
f7deaa1a | 936 | #ifdef HAVE_GSSAPI |
db1f069b | 937 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 938 | { |
939 | int len; /* Length of authorization string */ | |
940 | gss_cred_id_t server_creds; /* Server credentials */ | |
941 | gss_ctx_id_t context; /* Authorization context */ | |
942 | OM_uint32 major_status, /* Major status code */ | |
943 | minor_status; /* Minor status code */ | |
944 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
945 | /* Input token from string */ | |
946 | output_token = GSS_C_EMPTY_BUFFER; | |
947 | /* Output token for username */ | |
948 | gss_name_t client_name; /* Client name */ | |
c24d2134 | 949 | unsigned int ret_flags; /* Credential flags */ |
f7deaa1a | 950 | |
951 | ||
f42414bf | 952 | # ifdef __APPLE__ |
953 | /* | |
954 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
955 | * to use it... | |
956 | */ | |
957 | ||
958 | if (gss_init_sec_context == NULL) | |
959 | { | |
960 | cupsdLogMessage(CUPSD_LOG_WARN, | |
961 | "GSSAPI/Kerberos authentication failed because the " | |
962 | "Kerberos framework is not present."); | |
963 | return; | |
964 | } | |
965 | # endif /* __APPLE__ */ | |
966 | ||
f7deaa1a | 967 | con->gss_output_token.length = 0; |
968 | ||
969 | /* | |
970 | * Find the start of the Kerberos input token... | |
971 | */ | |
972 | ||
973 | authorization += 9; | |
974 | while (isspace(*authorization & 255)) | |
975 | authorization ++; | |
976 | ||
977 | if (!*authorization) | |
978 | { | |
979 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
980 | "cupsdAuthorize: No authentication data specified."); | |
981 | return; | |
982 | } | |
983 | ||
984 | /* | |
985 | * Get the server credentials... | |
986 | */ | |
987 | ||
988 | if ((server_creds = get_gss_creds(GSSServiceName)) == NULL) | |
f7deaa1a | 989 | return; |
f7deaa1a | 990 | |
991 | /* | |
992 | * Decode the authorization string to get the input token... | |
993 | */ | |
994 | ||
995 | len = strlen(authorization); | |
996 | input_token.value = malloc(len); | |
997 | input_token.value = httpDecode64_2(input_token.value, &len, | |
998 | authorization); | |
999 | input_token.length = len; | |
1000 | ||
1001 | /* | |
1002 | * Accept the input token to get the authorization info... | |
1003 | */ | |
1004 | ||
1005 | context = GSS_C_NO_CONTEXT; | |
1006 | client_name = GSS_C_NO_NAME; | |
1007 | major_status = gss_accept_sec_context(&minor_status, | |
1008 | &context, | |
1009 | server_creds, | |
1010 | &input_token, | |
1011 | GSS_C_NO_CHANNEL_BINDINGS, | |
1012 | &client_name, | |
1013 | NULL, | |
1014 | &con->gss_output_token, | |
c24d2134 | 1015 | &ret_flags, |
f7deaa1a | 1016 | NULL, |
1017 | &con->gss_delegated_cred); | |
1018 | ||
1019 | if (GSS_ERROR(major_status)) | |
1020 | { | |
1021 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1022 | "cupsdAuthorize: Error accepting GSSAPI security " | |
1023 | "context"); | |
1024 | ||
1025 | if (context != GSS_C_NO_CONTEXT) | |
1026 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
76cd9e37 MS |
1027 | |
1028 | gss_release_cred(&minor_status, &server_creds); | |
f7deaa1a | 1029 | return; |
1030 | } | |
1031 | ||
1032 | /* | |
76cd9e37 MS |
1033 | * Release our credentials... |
1034 | */ | |
1035 | ||
1036 | gss_release_cred(&minor_status, &server_creds); | |
1037 | ||
1038 | /* | |
1039 | * Get the username associated with the client's credentials... | |
f7deaa1a | 1040 | */ |
1041 | ||
355e94dc MS |
1042 | if (!con->gss_delegated_cred) |
1043 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1044 | "cupsdAuthorize: No delegated credentials!"); | |
1045 | ||
1046 | if (major_status == GSS_S_CONTINUE_NEEDED) | |
1047 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1048 | "cupsdAuthorize: Credentials not complete"); | |
1049 | else if (major_status == GSS_S_COMPLETE) | |
f7deaa1a | 1050 | { |
1051 | major_status = gss_display_name(&minor_status, client_name, | |
1052 | &output_token, NULL); | |
1053 | ||
1054 | if (GSS_ERROR(major_status)) | |
1055 | { | |
1056 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1057 | "cupsdAuthorize: Error getting username"); | |
1058 | gss_release_name(&minor_status, &client_name); | |
1059 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1060 | return; |
1061 | } | |
1062 | ||
1063 | gss_release_name(&minor_status, &client_name); | |
1064 | strlcpy(username, output_token.value, sizeof(username)); | |
355e94dc MS |
1065 | |
1066 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1067 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1068 | username); | |
f7deaa1a | 1069 | |
1070 | gss_release_buffer(&minor_status, &output_token); | |
1071 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
09a101d6 | 1072 | |
1073 | con->gss_have_creds = 1; | |
2fb76298 MS |
1074 | |
1075 | con->type = AUTH_NEGOTIATE; | |
f7deaa1a | 1076 | } |
1077 | else | |
1078 | gss_release_name(&minor_status, &client_name); | |
1079 | } | |
1080 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 1081 | else |
ef416fc2 | 1082 | { |
355e94dc | 1083 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
1084 | |
1085 | ||
1086 | if (sscanf(authorization, "%255s", scheme) != 1) | |
1087 | strcpy(scheme, "UNKNOWN"); | |
1088 | ||
2fb76298 MS |
1089 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\"", |
1090 | scheme); | |
ef416fc2 | 1091 | return; |
1092 | } | |
1093 | ||
1094 | /* | |
1095 | * If we get here, then we were able to validate the username and | |
1096 | * password - copy the validated username and password to the client | |
1097 | * data and return... | |
1098 | */ | |
1099 | ||
1100 | strlcpy(con->username, username, sizeof(con->username)); | |
1101 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1102 | } |
1103 | ||
1104 | ||
080811b1 MS |
1105 | /* |
1106 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
1107 | * access a location. | |
1108 | */ | |
1109 | ||
1110 | int /* O - 1 if allowed, 0 otherwise */ | |
1111 | cupsdCheckAccess( | |
1112 | unsigned ip[4], /* I - Client address */ | |
1113 | char *name, /* I - Client hostname */ | |
1114 | int namelen, /* I - Length of hostname */ | |
1115 | cupsd_location_t *loc) /* I - Location to check */ | |
1116 | { | |
1117 | int allow; /* 1 if allowed, 0 otherwise */ | |
1118 | ||
1119 | ||
1120 | if (!strcasecmp(name, "localhost")) | |
1121 | { | |
1122 | /* | |
1123 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
1124 | */ | |
1125 | ||
1126 | return (1); | |
1127 | } | |
1128 | else | |
1129 | { | |
1130 | /* | |
1131 | * Do authorization checks on the domain/address... | |
1132 | */ | |
1133 | ||
1134 | switch (loc->order_type) | |
1135 | { | |
1136 | default : | |
1137 | allow = 0; /* anti-compiler-warning-code */ | |
1138 | break; | |
1139 | ||
1140 | case AUTH_ALLOW : /* Order Deny,Allow */ | |
1141 | allow = 1; | |
1142 | ||
1143 | if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny)) | |
1144 | allow = 0; | |
1145 | ||
1146 | if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow)) | |
1147 | allow = 1; | |
1148 | break; | |
1149 | ||
1150 | case AUTH_DENY : /* Order Allow,Deny */ | |
1151 | allow = 0; | |
1152 | ||
1153 | if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow)) | |
1154 | allow = 1; | |
1155 | ||
1156 | if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny)) | |
1157 | allow = 0; | |
1158 | break; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | return (allow); | |
1163 | } | |
1164 | ||
1165 | ||
ef416fc2 | 1166 | /* |
1167 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1168 | */ | |
1169 | ||
1170 | int /* O - 1 if mask matches, 0 otherwise */ | |
1171 | cupsdCheckAuth( | |
1172 | unsigned ip[4], /* I - Client address */ | |
1173 | char *name, /* I - Client hostname */ | |
1174 | int name_len, /* I - Length of hostname */ | |
1175 | int num_masks, /* I - Number of masks */ | |
1176 | cupsd_authmask_t *masks) /* I - Masks */ | |
1177 | { | |
1178 | int i; /* Looping var */ | |
1179 | cupsd_netif_t *iface; /* Network interface */ | |
1180 | unsigned netip4; /* IPv4 network address */ | |
1181 | #ifdef AF_INET6 | |
1182 | unsigned netip6[4]; /* IPv6 network address */ | |
1183 | #endif /* AF_INET6 */ | |
1184 | ||
1185 | while (num_masks > 0) | |
1186 | { | |
1187 | switch (masks->type) | |
1188 | { | |
1189 | case AUTH_INTERFACE : | |
1190 | /* | |
1191 | * Check for a match with a network interface... | |
1192 | */ | |
1193 | ||
1194 | netip4 = htonl(ip[3]); | |
1195 | ||
1196 | #ifdef AF_INET6 | |
1197 | netip6[0] = htonl(ip[0]); | |
1198 | netip6[1] = htonl(ip[1]); | |
1199 | netip6[2] = htonl(ip[2]); | |
1200 | netip6[3] = htonl(ip[3]); | |
1201 | #endif /* AF_INET6 */ | |
1202 | ||
1203 | if (!strcmp(masks->mask.name.name, "*")) | |
1204 | { | |
1205 | /* | |
1206 | * Check against all local interfaces... | |
1207 | */ | |
1208 | ||
1209 | cupsdNetIFUpdate(); | |
1210 | ||
e00b005a | 1211 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1212 | iface; | |
1213 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1214 | { |
1215 | /* | |
1216 | * Only check local interfaces... | |
1217 | */ | |
1218 | ||
1219 | if (!iface->is_local) | |
1220 | continue; | |
1221 | ||
1222 | if (iface->address.addr.sa_family == AF_INET) | |
1223 | { | |
1224 | /* | |
1225 | * Check IPv4 address... | |
1226 | */ | |
1227 | ||
1228 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1229 | (iface->address.ipv4.sin_addr.s_addr & | |
1230 | iface->mask.ipv4.sin_addr.s_addr)) | |
1231 | return (1); | |
1232 | } | |
1233 | #ifdef AF_INET6 | |
1234 | else | |
1235 | { | |
1236 | /* | |
1237 | * Check IPv6 address... | |
1238 | */ | |
1239 | ||
1240 | for (i = 0; i < 4; i ++) | |
1241 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1242 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1243 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1244 | break; | |
1245 | ||
1246 | if (i == 4) | |
1247 | return (1); | |
1248 | } | |
1249 | #endif /* AF_INET6 */ | |
1250 | } | |
1251 | } | |
1252 | else | |
1253 | { | |
1254 | /* | |
1255 | * Check the named interface... | |
1256 | */ | |
1257 | ||
e00b005a | 1258 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1259 | iface; |
e00b005a | 1260 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1261 | { |
ed486911 | 1262 | if (strcmp(masks->mask.name.name, iface->name)) |
1263 | continue; | |
1264 | ||
ef416fc2 | 1265 | if (iface->address.addr.sa_family == AF_INET) |
1266 | { | |
1267 | /* | |
1268 | * Check IPv4 address... | |
1269 | */ | |
1270 | ||
1271 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1272 | (iface->address.ipv4.sin_addr.s_addr & | |
1273 | iface->mask.ipv4.sin_addr.s_addr)) | |
1274 | return (1); | |
1275 | } | |
1276 | #ifdef AF_INET6 | |
1277 | else | |
1278 | { | |
1279 | /* | |
1280 | * Check IPv6 address... | |
1281 | */ | |
1282 | ||
1283 | for (i = 0; i < 4; i ++) | |
1284 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1285 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1286 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1287 | break; | |
1288 | ||
1289 | if (i == 4) | |
1290 | return (1); | |
1291 | } | |
1292 | #endif /* AF_INET6 */ | |
1293 | } | |
1294 | } | |
1295 | break; | |
1296 | ||
1297 | case AUTH_NAME : | |
1298 | /* | |
1299 | * Check for exact name match... | |
1300 | */ | |
1301 | ||
1302 | if (!strcasecmp(name, masks->mask.name.name)) | |
1303 | return (1); | |
1304 | ||
1305 | /* | |
1306 | * Check for domain match... | |
1307 | */ | |
1308 | ||
1309 | if (name_len >= masks->mask.name.length && | |
1310 | masks->mask.name.name[0] == '.' && | |
bd7854cb | 1311 | !strcasecmp(name + name_len - masks->mask.name.length, |
1312 | masks->mask.name.name)) | |
ef416fc2 | 1313 | return (1); |
1314 | break; | |
1315 | ||
1316 | case AUTH_IP : | |
1317 | /* | |
1318 | * Check for IP/network address match... | |
1319 | */ | |
1320 | ||
1321 | for (i = 0; i < 4; i ++) | |
1322 | if ((ip[i] & masks->mask.ip.netmask[i]) != | |
1323 | masks->mask.ip.address[i]) | |
1324 | break; | |
1325 | ||
1326 | if (i == 4) | |
1327 | return (1); | |
1328 | break; | |
1329 | } | |
1330 | ||
1331 | masks ++; | |
1332 | num_masks --; | |
1333 | } | |
1334 | ||
1335 | return (0); | |
1336 | } | |
1337 | ||
1338 | ||
1339 | /* | |
1340 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1341 | */ | |
1342 | ||
1343 | int /* O - 1 if user is a member, 0 otherwise */ | |
1344 | cupsdCheckGroup( | |
1345 | const char *username, /* I - User name */ | |
1346 | struct passwd *user, /* I - System user info */ | |
1347 | const char *groupname) /* I - Group name */ | |
1348 | { | |
1349 | int i; /* Looping var */ | |
1350 | struct group *group; /* System group info */ | |
1351 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 1352 | #ifdef HAVE_MBR_UID_TO_UUID |
1353 | uuid_t useruuid, /* UUID for username */ | |
1354 | groupuuid; /* UUID for groupname */ | |
1355 | int is_member; /* True if user is a member of group */ | |
1356 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
ef416fc2 | 1357 | |
1358 | ||
1359 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1360 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1361 | username, user, groupname); | |
1362 | ||
1363 | /* | |
1364 | * Validate input... | |
1365 | */ | |
1366 | ||
1367 | if (!username || !groupname) | |
1368 | return (0); | |
1369 | ||
1370 | /* | |
1371 | * Check to see if the user is a member of the named group... | |
1372 | */ | |
1373 | ||
1374 | group = getgrnam(groupname); | |
1375 | endgrent(); | |
1376 | ||
1377 | if (group != NULL) | |
1378 | { | |
1379 | /* | |
1380 | * Group exists, check it... | |
1381 | */ | |
1382 | ||
1383 | for (i = 0; group->gr_mem[i]; i ++) | |
1384 | if (!strcasecmp(username, group->gr_mem[i])) | |
1385 | return (1); | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * Group doesn't exist or user not in group list, check the group ID | |
1390 | * against the user's group ID... | |
1391 | */ | |
1392 | ||
1393 | if (user && group && group->gr_gid == user->pw_gid) | |
1394 | return (1); | |
1395 | ||
bd7854cb | 1396 | #ifdef HAVE_MBR_UID_TO_UUID |
1397 | /* | |
1398 | * Check group membership through MacOS X membership API... | |
1399 | */ | |
1400 | ||
1401 | if (user && group) | |
1402 | if (!mbr_uid_to_uuid(user->pw_uid, useruuid)) | |
1403 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) | |
1404 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1405 | if (is_member) | |
1406 | return (1); | |
1407 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
1408 | ||
ef416fc2 | 1409 | /* |
1410 | * Username not found, group not found, or user is not part of the | |
1411 | * system group... Check for a user and group in the MD5 password | |
1412 | * file... | |
1413 | */ | |
1414 | ||
e1d6a774 | 1415 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1416 | return (1); |
1417 | ||
1418 | /* | |
1419 | * If we get this far, then the user isn't part of the named group... | |
1420 | */ | |
1421 | ||
1422 | return (0); | |
1423 | } | |
1424 | ||
1425 | ||
1426 | /* | |
1427 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1428 | */ | |
1429 | ||
1430 | cupsd_location_t * /* O - New location */ | |
1431 | cupsdCopyLocation( | |
1432 | cupsd_location_t **loc) /* IO - Original location */ | |
1433 | { | |
1434 | int i; /* Looping var */ | |
ef416fc2 | 1435 | cupsd_location_t *temp; /* New location */ |
1436 | char location[HTTP_MAX_URI]; | |
1437 | /* Location of resource */ | |
1438 | ||
1439 | ||
ef416fc2 | 1440 | /* |
1441 | * Use a local copy of location because cupsdAddLocation may cause | |
1442 | * this memory to be moved... | |
1443 | */ | |
1444 | ||
1445 | strlcpy(location, (*loc)->location, sizeof(location)); | |
1446 | ||
1447 | if ((temp = cupsdAddLocation(location)) == NULL) | |
1448 | return (NULL); | |
1449 | ||
ef416fc2 | 1450 | /* |
1451 | * Copy the information from the original location to the new one. | |
1452 | */ | |
1453 | ||
1454 | temp->limit = (*loc)->limit; | |
1455 | temp->order_type = (*loc)->order_type; | |
1456 | temp->type = (*loc)->type; | |
1457 | temp->level = (*loc)->level; | |
1458 | temp->satisfy = (*loc)->satisfy; | |
1459 | temp->encryption = (*loc)->encryption; | |
1460 | ||
1461 | if ((temp->num_names = (*loc)->num_names) > 0) | |
1462 | { | |
1463 | /* | |
1464 | * Copy the names array... | |
1465 | */ | |
1466 | ||
1467 | if ((temp->names = calloc(temp->num_names, sizeof(char *))) == NULL) | |
1468 | { | |
1469 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1470 | "cupsdCopyLocation: Unable to allocate memory for %d names: %s", | |
1471 | temp->num_names, strerror(errno)); | |
bd7854cb | 1472 | |
1473 | cupsdDeleteLocation(temp); | |
ef416fc2 | 1474 | return (NULL); |
1475 | } | |
1476 | ||
1477 | for (i = 0; i < temp->num_names; i ++) | |
1478 | if ((temp->names[i] = strdup((*loc)->names[i])) == NULL) | |
1479 | { | |
1480 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1481 | "cupsdCopyLocation: Unable to copy name \"%s\": %s", | |
1482 | (*loc)->names[i], strerror(errno)); | |
1483 | ||
bd7854cb | 1484 | cupsdDeleteLocation(temp); |
ef416fc2 | 1485 | return (NULL); |
1486 | } | |
1487 | } | |
1488 | ||
1489 | if ((temp->num_allow = (*loc)->num_allow) > 0) | |
1490 | { | |
1491 | /* | |
1492 | * Copy allow rules... | |
1493 | */ | |
1494 | ||
1495 | if ((temp->allow = calloc(temp->num_allow, sizeof(cupsd_authmask_t))) == NULL) | |
1496 | { | |
1497 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1498 | "cupsdCopyLocation: Unable to allocate memory for %d allow rules: %s", | |
1499 | temp->num_allow, strerror(errno)); | |
bd7854cb | 1500 | cupsdDeleteLocation(temp); |
ef416fc2 | 1501 | return (NULL); |
1502 | } | |
1503 | ||
1504 | for (i = 0; i < temp->num_allow; i ++) | |
1505 | switch (temp->allow[i].type = (*loc)->allow[i].type) | |
1506 | { | |
1507 | case AUTH_NAME : | |
1508 | temp->allow[i].mask.name.length = (*loc)->allow[i].mask.name.length; | |
1509 | temp->allow[i].mask.name.name = strdup((*loc)->allow[i].mask.name.name); | |
1510 | ||
1511 | if (temp->allow[i].mask.name.name == NULL) | |
1512 | { | |
1513 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1514 | "cupsdCopyLocation: Unable to copy allow name \"%s\": %s", | |
1515 | (*loc)->allow[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1516 | cupsdDeleteLocation(temp); |
ef416fc2 | 1517 | return (NULL); |
1518 | } | |
1519 | break; | |
1520 | case AUTH_IP : | |
1521 | memcpy(&(temp->allow[i].mask.ip), &((*loc)->allow[i].mask.ip), | |
1522 | sizeof(cupsd_ipmask_t)); | |
1523 | break; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | if ((temp->num_deny = (*loc)->num_deny) > 0) | |
1528 | { | |
1529 | /* | |
1530 | * Copy deny rules... | |
1531 | */ | |
1532 | ||
1533 | if ((temp->deny = calloc(temp->num_deny, sizeof(cupsd_authmask_t))) == NULL) | |
1534 | { | |
1535 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1536 | "cupsdCopyLocation: Unable to allocate memory for %d deny rules: %s", | |
1537 | temp->num_deny, strerror(errno)); | |
bd7854cb | 1538 | cupsdDeleteLocation(temp); |
ef416fc2 | 1539 | return (NULL); |
1540 | } | |
1541 | ||
1542 | for (i = 0; i < temp->num_deny; i ++) | |
1543 | switch (temp->deny[i].type = (*loc)->deny[i].type) | |
1544 | { | |
1545 | case AUTH_NAME : | |
1546 | temp->deny[i].mask.name.length = (*loc)->deny[i].mask.name.length; | |
1547 | temp->deny[i].mask.name.name = strdup((*loc)->deny[i].mask.name.name); | |
1548 | ||
1549 | if (temp->deny[i].mask.name.name == NULL) | |
1550 | { | |
1551 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1552 | "cupsdCopyLocation: Unable to copy deny name \"%s\": %s", | |
1553 | (*loc)->deny[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1554 | cupsdDeleteLocation(temp); |
ef416fc2 | 1555 | return (NULL); |
1556 | } | |
1557 | break; | |
1558 | case AUTH_IP : | |
1559 | memcpy(&(temp->deny[i].mask.ip), &((*loc)->deny[i].mask.ip), | |
1560 | sizeof(cupsd_ipmask_t)); | |
1561 | break; | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | return (temp); | |
1566 | } | |
1567 | ||
1568 | ||
1569 | /* | |
1570 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1571 | */ | |
1572 | ||
1573 | void | |
1574 | cupsdDeleteAllLocations(void) | |
1575 | { | |
ef416fc2 | 1576 | cupsd_location_t *loc; /* Current location */ |
1577 | ||
1578 | ||
1579 | /* | |
1580 | * Free all of the allow/deny records first... | |
1581 | */ | |
1582 | ||
bd7854cb | 1583 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1584 | loc; | |
1585 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1586 | cupsdDeleteLocation(loc); |
1587 | ||
1588 | /* | |
1589 | * Then free the location array... | |
1590 | */ | |
1591 | ||
bd7854cb | 1592 | cupsArrayDelete(Locations); |
1593 | Locations = NULL; | |
ef416fc2 | 1594 | } |
1595 | ||
1596 | ||
1597 | /* | |
1598 | * 'cupsdDeleteLocation()' - Free all memory used by a location. | |
1599 | */ | |
1600 | ||
1601 | void | |
1602 | cupsdDeleteLocation( | |
1603 | cupsd_location_t *loc) /* I - Location to delete */ | |
1604 | { | |
1605 | int i; /* Looping var */ | |
1606 | cupsd_authmask_t *mask; /* Current mask */ | |
1607 | ||
1608 | ||
bd7854cb | 1609 | cupsArrayRemove(Locations, loc); |
1610 | ||
ef416fc2 | 1611 | for (i = loc->num_names - 1; i >= 0; i --) |
1612 | free(loc->names[i]); | |
1613 | ||
1614 | if (loc->num_names > 0) | |
1615 | free(loc->names); | |
1616 | ||
1617 | for (i = loc->num_allow, mask = loc->allow; i > 0; i --, mask ++) | |
1618 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1619 | free(mask->mask.name.name); | |
1620 | ||
1621 | if (loc->num_allow > 0) | |
1622 | free(loc->allow); | |
1623 | ||
1624 | for (i = loc->num_deny, mask = loc->deny; i > 0; i --, mask ++) | |
1625 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1626 | free(mask->mask.name.name); | |
1627 | ||
1628 | if (loc->num_deny > 0) | |
1629 | free(loc->deny); | |
bd7854cb | 1630 | |
1631 | free(loc->location); | |
1632 | free(loc); | |
ef416fc2 | 1633 | } |
1634 | ||
1635 | ||
1636 | /* | |
1637 | * 'cupsdDenyHost()' - Add a host name that is not allowed to access the | |
1638 | * location. | |
1639 | */ | |
1640 | ||
1641 | void | |
1642 | cupsdDenyHost(cupsd_location_t *loc, /* I - Location to add to */ | |
1643 | char *name) /* I - Name of host or domain to add */ | |
1644 | { | |
1645 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1646 | char ifname[32], /* Interface name */ | |
1647 | *ifptr; /* Pointer to end of name */ | |
1648 | ||
1649 | ||
1650 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdDenyHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 1651 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 1652 | |
1653 | if ((temp = add_deny(loc)) == NULL) | |
1654 | return; | |
1655 | ||
bd7854cb | 1656 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 1657 | { |
1658 | /* | |
1659 | * Deny *interface*... | |
1660 | */ | |
1661 | ||
1662 | temp->type = AUTH_INTERFACE; | |
1663 | temp->mask.name.name = strdup("*"); | |
1664 | temp->mask.name.length = 1; | |
1665 | } | |
bd7854cb | 1666 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 1667 | { |
1668 | /* | |
1669 | * Deny *interface*... | |
1670 | */ | |
1671 | ||
1672 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
1673 | ||
1674 | ifptr = ifname + strlen(ifname); | |
1675 | ||
1676 | if (ifptr[-1] == ')') | |
1677 | { | |
1678 | ifptr --; | |
1679 | *ifptr = '\0'; | |
1680 | } | |
1681 | ||
1682 | temp->type = AUTH_INTERFACE; | |
1683 | temp->mask.name.name = strdup(ifname); | |
1684 | temp->mask.name.length = ifptr - ifname; | |
1685 | } | |
1686 | else | |
1687 | { | |
1688 | /* | |
1689 | * Deny name... | |
1690 | */ | |
1691 | ||
1692 | temp->type = AUTH_NAME; | |
1693 | temp->mask.name.name = strdup(name); | |
1694 | temp->mask.name.length = strlen(name); | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | ||
1699 | /* | |
1700 | * 'cupsdDenyIP()' - Add an IP address or network that is not allowed to | |
1701 | * access the location. | |
1702 | */ | |
1703 | ||
1704 | void | |
1705 | cupsdDenyIP(cupsd_location_t *loc, /* I - Location to add to */ | |
1706 | unsigned address[4],/* I - IP address to add */ | |
1707 | unsigned netmask[4])/* I - Netmask of address */ | |
1708 | { | |
1709 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1710 | ||
1711 | ||
1712 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1713 | "cupsdDenyIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 1714 | loc, loc->location ? loc->location : "nil", |
1715 | address[0], address[1], address[2], address[3], | |
1716 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 1717 | |
1718 | if ((temp = add_deny(loc)) == NULL) | |
1719 | return; | |
1720 | ||
1721 | temp->type = AUTH_IP; | |
1722 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
1723 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
1724 | } | |
1725 | ||
1726 | ||
1727 | /* | |
1728 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1729 | */ | |
1730 | ||
1731 | cupsd_location_t * /* O - Location that matches */ | |
1732 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1733 | http_state_t state) /* I - HTTP state/request */ | |
1734 | { | |
ef416fc2 | 1735 | char uri[HTTP_MAX_URI], |
1736 | /* URI in request... */ | |
1737 | *uriptr; /* Pointer into URI */ | |
1738 | cupsd_location_t *loc, /* Current location */ | |
1739 | *best; /* Best match for location so far */ | |
1740 | int bestlen; /* Length of best match */ | |
1741 | int limit; /* Limit field */ | |
1742 | static const int limits[] = /* Map http_status_t to AUTH_LIMIT_xyz */ | |
1743 | { | |
1744 | AUTH_LIMIT_ALL, | |
1745 | AUTH_LIMIT_OPTIONS, | |
1746 | AUTH_LIMIT_GET, | |
1747 | AUTH_LIMIT_GET, | |
1748 | AUTH_LIMIT_HEAD, | |
1749 | AUTH_LIMIT_POST, | |
1750 | AUTH_LIMIT_POST, | |
1751 | AUTH_LIMIT_POST, | |
1752 | AUTH_LIMIT_PUT, | |
1753 | AUTH_LIMIT_PUT, | |
1754 | AUTH_LIMIT_DELETE, | |
1755 | AUTH_LIMIT_TRACE, | |
1756 | AUTH_LIMIT_ALL, | |
1757 | AUTH_LIMIT_ALL | |
1758 | }; | |
1759 | ||
1760 | ||
1761 | /* | |
1762 | * First copy the connection URI to a local string so we have drop | |
1763 | * any .ppd extension from the pathname in /printers or /classes | |
1764 | * URIs... | |
1765 | */ | |
1766 | ||
1767 | strlcpy(uri, path, sizeof(uri)); | |
1768 | ||
1769 | if (!strncmp(uri, "/printers/", 10) || | |
1770 | !strncmp(uri, "/classes/", 9)) | |
1771 | { | |
1772 | /* | |
1773 | * Check if the URI has .ppd on the end... | |
1774 | */ | |
1775 | ||
1776 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1777 | ||
1778 | if (!strcmp(uriptr, ".ppd")) | |
1779 | *uriptr = '\0'; | |
1780 | } | |
1781 | ||
1782 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1783 | ||
1784 | /* | |
1785 | * Loop through the list of locations to find a match... | |
1786 | */ | |
1787 | ||
1788 | limit = limits[state]; | |
1789 | best = NULL; | |
1790 | bestlen = 0; | |
1791 | ||
bd7854cb | 1792 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1793 | loc; | |
1794 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1795 | { |
1796 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1797 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1798 | |
1799 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1800 | { | |
1801 | /* | |
1802 | * Use case-insensitive comparison for queue names... | |
1803 | */ | |
1804 | ||
e1d6a774 | 1805 | if (loc->length > bestlen && loc->location && |
bd7854cb | 1806 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1807 | loc->location[0] == '/' && |
1808 | (limit & loc->limit) != 0) | |
1809 | { | |
1810 | best = loc; | |
1811 | bestlen = loc->length; | |
1812 | } | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | /* | |
1817 | * Use case-sensitive comparison for other URIs... | |
1818 | */ | |
1819 | ||
e1d6a774 | 1820 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1821 | !strncmp(uri, loc->location, loc->length) && |
1822 | loc->location[0] == '/' && | |
1823 | (limit & loc->limit) != 0) | |
1824 | { | |
1825 | best = loc; | |
1826 | bestlen = loc->length; | |
1827 | } | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | /* | |
1832 | * Return the match, if any... | |
1833 | */ | |
1834 | ||
1835 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1836 | best ? best->location : "NONE"); | |
1837 | ||
1838 | return (best); | |
1839 | } | |
1840 | ||
1841 | ||
1842 | /* | |
1843 | * 'cupsdFindLocation()' - Find the named location. | |
1844 | */ | |
1845 | ||
1846 | cupsd_location_t * /* O - Location that matches */ | |
1847 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1848 | { | |
bd7854cb | 1849 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1850 | |
1851 | ||
bd7854cb | 1852 | key.location = (char *)location; |
ef416fc2 | 1853 | |
bd7854cb | 1854 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1855 | } |
1856 | ||
1857 | ||
ef416fc2 | 1858 | /* |
1859 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1860 | */ | |
1861 | ||
1862 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1863 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1864 | const char *owner)/* I - Owner of object */ | |
1865 | { | |
1866 | int i, j, /* Looping vars */ | |
2fb76298 MS |
1867 | auth, /* Authorization status */ |
1868 | type; /* Type of authentication */ | |
ef416fc2 | 1869 | unsigned address[4]; /* Authorization address */ |
1870 | cupsd_location_t *best; /* Best match for location so far */ | |
1871 | int hostlen; /* Length of hostname */ | |
db1f069b MS |
1872 | char username[256], /* Username to authorize */ |
1873 | ownername[256], /* Owner name to authorize */ | |
1874 | *ptr; /* Pointer into username */ | |
ef416fc2 | 1875 | struct passwd *pw; /* User password data */ |
1876 | static const char * const levels[] = /* Auth levels */ | |
1877 | { | |
1878 | "ANON", | |
1879 | "USER", | |
1880 | "GROUP" | |
1881 | }; | |
1882 | static const char * const types[] = /* Auth types */ | |
1883 | { | |
2fb76298 MS |
1884 | "None", |
1885 | "Basic", | |
1886 | "Digest", | |
1887 | "BasicDigest", | |
1888 | "Negotiate" | |
ef416fc2 | 1889 | }; |
1890 | ||
1891 | ||
1892 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1893 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
f301802f | 1894 | con->uri, con->best, con->best ? con->best->location ? |
1895 | con->best->location : "(null)" : ""); | |
fa73b229 | 1896 | if (owner) |
1897 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1898 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1899 | |
1900 | /* | |
1901 | * If there is no "best" authentication rule for this request, then | |
1902 | * access is allowed from the local system and denied from other | |
1903 | * addresses... | |
1904 | */ | |
1905 | ||
1906 | if (!con->best) | |
1907 | { | |
1908 | if (!strcmp(con->http.hostname, "localhost") || | |
1909 | !strcmp(con->http.hostname, ServerName)) | |
1910 | return (HTTP_OK); | |
1911 | else | |
1912 | return (HTTP_FORBIDDEN); | |
1913 | } | |
1914 | ||
1915 | best = con->best; | |
1916 | ||
2fb76298 MS |
1917 | if ((type = best->type) == AUTH_DEFAULT) |
1918 | type = DefaultAuthType; | |
1919 | ||
ef416fc2 | 1920 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
2fb76298 | 1921 | "cupsdIsAuthorized: level=AUTH_%s, type=%s, " |
bd7854cb | 1922 | "satisfy=AUTH_SATISFY_%s, num_names=%d", |
2fb76298 | 1923 | levels[best->level], types[type], |
ef416fc2 | 1924 | best->satisfy ? "ANY" : "ALL", best->num_names); |
1925 | ||
1926 | if (best->limit == AUTH_LIMIT_IPP) | |
1927 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", | |
1928 | best->op, ippOpString(best->op)); | |
1929 | ||
1930 | /* | |
1931 | * Check host/ip-based accesses... | |
1932 | */ | |
1933 | ||
1934 | #ifdef AF_INET6 | |
1935 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1936 | { | |
1937 | /* | |
1938 | * Copy IPv6 address... | |
1939 | */ | |
1940 | ||
1941 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1942 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1943 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1944 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1945 | } | |
1946 | else | |
1947 | #endif /* AF_INET6 */ | |
1948 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
1949 | { | |
1950 | /* | |
1951 | * Copy IPv4 address... | |
1952 | */ | |
1953 | ||
1954 | address[0] = 0; | |
1955 | address[1] = 0; | |
1956 | address[2] = 0; | |
1957 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
1958 | } | |
1959 | else | |
1960 | memset(address, 0, sizeof(address)); | |
1961 | ||
1962 | hostlen = strlen(con->http.hostname); | |
1963 | ||
080811b1 MS |
1964 | auth = cupsdCheckAccess(address, con->http.hostname, hostlen, best) |
1965 | ? AUTH_ALLOW : AUTH_DENY; | |
ef416fc2 | 1966 | |
1967 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=AUTH_%s...", | |
1968 | auth ? "DENY" : "ALLOW"); | |
1969 | ||
1970 | if (auth == AUTH_DENY && best->satisfy == AUTH_SATISFY_ALL) | |
1971 | return (HTTP_FORBIDDEN); | |
1972 | ||
1973 | #ifdef HAVE_SSL | |
1974 | /* | |
1975 | * See if encryption is required... | |
1976 | */ | |
1977 | ||
f7deaa1a | 1978 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
a74454a7 | 1979 | strcasecmp(con->http.hostname, "localhost") && |
f7deaa1a | 1980 | best->satisfy == AUTH_SATISFY_ALL) && |
2fb76298 MS |
1981 | !(type == AUTH_NEGOTIATE || |
1982 | (type == AUTH_NONE && DefaultAuthType == AUTH_NEGOTIATE))) | |
ef416fc2 | 1983 | { |
355e94dc | 1984 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1985 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
1986 | return (HTTP_UPGRADE_REQUIRED); | |
1987 | } | |
1988 | #endif /* HAVE_SSL */ | |
1989 | ||
1990 | /* | |
1991 | * Now see what access level is required... | |
1992 | */ | |
1993 | ||
1994 | if (best->level == AUTH_ANON || /* Anonymous access - allow it */ | |
2fb76298 | 1995 | (type == AUTH_NONE && best->num_names == 0)) |
ef416fc2 | 1996 | return (HTTP_OK); |
1997 | ||
2fb76298 | 1998 | if (!con->username[0] && type == AUTH_NONE && |
fa73b229 | 1999 | best->limit == AUTH_LIMIT_IPP) |
ef416fc2 | 2000 | { |
2001 | /* | |
2002 | * Check for unauthenticated username... | |
2003 | */ | |
2004 | ||
2005 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
2006 | ||
2007 | ||
2008 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
2009 | if (attr) | |
2010 | { | |
355e94dc | 2011 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2012 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
2013 | attr->values[0].string.text); | |
db1f069b | 2014 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 2015 | } |
fa73b229 | 2016 | else if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) |
ef416fc2 | 2017 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2018 | else | |
2019 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2020 | } | |
fa73b229 | 2021 | else |
2022 | { | |
355e94dc | 2023 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 2024 | con->username); |
2025 | ||
f7deaa1a | 2026 | #ifdef HAVE_AUTHORIZATION_H |
2027 | if (!con->username[0] && !con->authref) | |
2028 | #else | |
fa73b229 | 2029 | if (!con->username[0]) |
f7deaa1a | 2030 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 2031 | { |
2032 | if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) | |
2033 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ | |
2034 | else | |
2035 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2036 | } | |
2037 | ||
2fb76298 MS |
2038 | if (con->type != type && type != AUTH_NONE && |
2039 | (con->type != AUTH_BASIC || type != AUTH_BASICDIGEST)) | |
2040 | { | |
2041 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s!", | |
2042 | types[con->type], types[type]); | |
2043 | ||
2044 | return (HTTP_UNAUTHORIZED); | |
2045 | } | |
2046 | ||
db1f069b | 2047 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 2048 | } |
ef416fc2 | 2049 | |
2050 | /* | |
fa73b229 | 2051 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 2052 | * access... (root always matches) |
2053 | */ | |
2054 | ||
fa73b229 | 2055 | if (!strcmp(username, "root")) |
ef416fc2 | 2056 | return (HTTP_OK); |
2057 | ||
db1f069b MS |
2058 | /* |
2059 | * Strip any @domain or @KDC from the username and owner... | |
2060 | */ | |
2061 | ||
2062 | if ((ptr = strchr(username, '@')) != NULL) | |
2063 | *ptr = '\0'; | |
2064 | ||
2065 | if (owner) | |
2066 | { | |
2067 | strlcpy(ownername, owner, sizeof(ownername)); | |
2068 | ||
2069 | if ((ptr = strchr(ownername, '@')) != NULL) | |
2070 | *ptr = '\0'; | |
2071 | } | |
2072 | else | |
2073 | ownername[0] = '\0'; | |
2074 | ||
ef416fc2 | 2075 | /* |
2076 | * Get the user info... | |
2077 | */ | |
2078 | ||
f7deaa1a | 2079 | if (username[0]) |
2080 | { | |
2081 | pw = getpwnam(username); | |
2082 | endpwent(); | |
2083 | } | |
2084 | else | |
2085 | pw = NULL; | |
ef416fc2 | 2086 | |
2087 | if (best->level == AUTH_USER) | |
2088 | { | |
2089 | /* | |
2090 | * If there are no names associated with this location, then | |
2091 | * any valid user is OK... | |
2092 | */ | |
2093 | ||
2094 | if (best->num_names == 0) | |
2095 | return (HTTP_OK); | |
2096 | ||
2097 | /* | |
2098 | * Otherwise check the user list and return OK if this user is | |
2099 | * allowed... | |
2100 | */ | |
2101 | ||
2102 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2103 | "cupsdIsAuthorized: Checking user membership..."); | |
2104 | ||
f7deaa1a | 2105 | #ifdef HAVE_AUTHORIZATION_H |
2106 | /* | |
2107 | * If an authorization reference was supplied it must match a right name... | |
2108 | */ | |
2109 | ||
2110 | if (con->authref) | |
2111 | { | |
2112 | for (i = 0; i < best->num_names; i ++) | |
2113 | { | |
2114 | if (!strncasecmp(best->names[i], "@AUTHKEY(", 9) && | |
2115 | check_authref(con, best->names[i] + 9)) | |
2116 | return (HTTP_OK); | |
2117 | else if (!strcasecmp(best->names[i], "@SYSTEM") && | |
2118 | SystemGroupAuthKey && | |
2119 | check_authref(con, SystemGroupAuthKey)) | |
2120 | return (HTTP_OK); | |
2121 | } | |
2122 | ||
2123 | return (HTTP_UNAUTHORIZED); | |
2124 | } | |
2125 | #endif /* HAVE_AUTHORIZATION_H */ | |
2126 | ||
ef416fc2 | 2127 | for (i = 0; i < best->num_names; i ++) |
2128 | { | |
2129 | if (!strcasecmp(best->names[i], "@OWNER") && owner && | |
db1f069b | 2130 | !strcasecmp(username, ownername)) |
ef416fc2 | 2131 | return (HTTP_OK); |
2132 | else if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2133 | { | |
2134 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2135 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2136 | return (HTTP_OK); |
2137 | } | |
2138 | else if (best->names[i][0] == '@') | |
2139 | { | |
fa73b229 | 2140 | if (cupsdCheckGroup(username, pw, best->names[i] + 1)) |
ef416fc2 | 2141 | return (HTTP_OK); |
2142 | } | |
fa73b229 | 2143 | else if (!strcasecmp(username, best->names[i])) |
ef416fc2 | 2144 | return (HTTP_OK); |
2145 | } | |
2146 | ||
2147 | return (HTTP_UNAUTHORIZED); | |
2148 | } | |
2149 | ||
2150 | /* | |
2151 | * Check to see if this user is in any of the named groups... | |
2152 | */ | |
2153 | ||
2154 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2155 | "cupsdIsAuthorized: Checking group membership..."); | |
2156 | ||
2157 | /* | |
2158 | * Check to see if this user is in any of the named groups... | |
2159 | */ | |
2160 | ||
2161 | for (i = 0; i < best->num_names; i ++) | |
2162 | { | |
2163 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2164 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
2165 | best->names[i]); | |
2166 | ||
2167 | if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2168 | { | |
2169 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2170 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2171 | return (HTTP_OK); |
2172 | } | |
fa73b229 | 2173 | else if (cupsdCheckGroup(username, pw, best->names[i])) |
ef416fc2 | 2174 | return (HTTP_OK); |
2175 | } | |
2176 | ||
2177 | /* | |
2178 | * The user isn't part of the specified group, so deny access... | |
2179 | */ | |
2180 | ||
355e94dc | 2181 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2182 | "cupsdIsAuthorized: User not in group(s)!"); |
2183 | ||
2184 | return (HTTP_UNAUTHORIZED); | |
2185 | } | |
2186 | ||
2187 | ||
2188 | /* | |
2189 | * 'add_allow()' - Add an allow mask to the location. | |
2190 | */ | |
2191 | ||
2192 | static cupsd_authmask_t * /* O - New mask record */ | |
2193 | add_allow(cupsd_location_t *loc) /* I - Location to add to */ | |
2194 | { | |
2195 | cupsd_authmask_t *temp; /* New mask record */ | |
2196 | ||
2197 | ||
2198 | /* | |
2199 | * Range-check... | |
2200 | */ | |
2201 | ||
2202 | if (loc == NULL) | |
2203 | return (NULL); | |
2204 | ||
2205 | /* | |
2206 | * Try to allocate memory for the record... | |
2207 | */ | |
2208 | ||
2209 | if (loc->num_allow == 0) | |
2210 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2211 | else | |
2212 | temp = realloc(loc->allow, sizeof(cupsd_authmask_t) * (loc->num_allow + 1)); | |
2213 | ||
2214 | if (temp == NULL) | |
2215 | return (NULL); | |
2216 | ||
2217 | loc->allow = temp; | |
2218 | temp += loc->num_allow; | |
2219 | loc->num_allow ++; | |
2220 | ||
2221 | /* | |
2222 | * Clear the mask record and return... | |
2223 | */ | |
2224 | ||
2225 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2226 | return (temp); | |
2227 | } | |
2228 | ||
2229 | ||
2230 | /* | |
2231 | * 'add_deny()' - Add a deny mask to the location. | |
2232 | */ | |
2233 | ||
2234 | static cupsd_authmask_t * /* O - New mask record */ | |
2235 | add_deny(cupsd_location_t *loc) /* I - Location to add to */ | |
2236 | { | |
2237 | cupsd_authmask_t *temp; /* New mask record */ | |
2238 | ||
2239 | ||
2240 | /* | |
2241 | * Range-check... | |
2242 | */ | |
2243 | ||
2244 | if (loc == NULL) | |
2245 | return (NULL); | |
2246 | ||
2247 | /* | |
2248 | * Try to allocate memory for the record... | |
2249 | */ | |
2250 | ||
2251 | if (loc->num_deny == 0) | |
2252 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2253 | else | |
2254 | temp = realloc(loc->deny, sizeof(cupsd_authmask_t) * (loc->num_deny + 1)); | |
2255 | ||
2256 | if (temp == NULL) | |
2257 | return (NULL); | |
2258 | ||
2259 | loc->deny = temp; | |
2260 | temp += loc->num_deny; | |
2261 | loc->num_deny ++; | |
2262 | ||
2263 | /* | |
2264 | * Clear the mask record and return... | |
2265 | */ | |
2266 | ||
2267 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2268 | return (temp); | |
2269 | } | |
2270 | ||
2271 | ||
f7deaa1a | 2272 | #ifdef HAVE_AUTHORIZATION_H |
2273 | /* | |
2274 | * 'check_authref()' - Check if an authorization services reference has the | |
2275 | * supplied right. | |
2276 | */ | |
2277 | ||
2278 | static int /* O - 1 if right is valid, 0 otherwise */ | |
2279 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
2280 | const char *right) /* I - Right name */ | |
2281 | { | |
2282 | OSStatus status; /* OS Status */ | |
2283 | AuthorizationItem authright; /* Authorization right */ | |
2284 | AuthorizationRights authrights; /* Authorization rights */ | |
2285 | AuthorizationFlags authflags; /* Authorization flags */ | |
2286 | ||
2287 | ||
2288 | /* | |
2289 | * Check to see if the user is allowed to perform the task... | |
2290 | */ | |
2291 | ||
2292 | if (!con->authref) | |
2293 | return (0); | |
2294 | ||
2295 | authright.name = right; | |
2296 | authright.valueLength = 0; | |
2297 | authright.value = NULL; | |
2298 | authright.flags = 0; | |
2299 | ||
2300 | authrights.count = 1; | |
2301 | authrights.items = &authright; | |
2302 | ||
2303 | authflags = kAuthorizationFlagDefaults | | |
2304 | kAuthorizationFlagExtendRights; | |
2305 | ||
2306 | if ((status = AuthorizationCopyRights(con->authref, &authrights, | |
2307 | kAuthorizationEmptyEnvironment, | |
2308 | authflags, NULL)) != 0) | |
2309 | { | |
2310 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2311 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2312 | authright.name, (int)status, cssmErrorString(status)); | |
2313 | return (0); | |
2314 | } | |
2315 | ||
2316 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2317 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2318 | authright.name); | |
2319 | ||
2320 | return (1); | |
2321 | } | |
2322 | #endif /* HAVE_AUTHORIZATION_H */ | |
2323 | ||
2324 | ||
bd7854cb | 2325 | /* |
2326 | * 'compare_locations()' - Compare two locations. | |
2327 | */ | |
2328 | ||
2329 | static int /* O - Result of comparison */ | |
2330 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2331 | cupsd_location_t *b) /* I - Second location */ | |
2332 | { | |
2333 | return (strcmp(b->location, a->location)); | |
2334 | } | |
2335 | ||
2336 | ||
d09495fa | 2337 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 2338 | /* |
2339 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2340 | * as needed. | |
2341 | */ | |
2342 | ||
2343 | static char * /* O - Encrypted password */ | |
2344 | cups_crypt(const char *pw, /* I - Password string */ | |
2345 | const char *salt) /* I - Salt (key) string */ | |
2346 | { | |
bd7854cb | 2347 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2348 | { |
2349 | /* | |
2350 | * Use MD5 passwords without the benefit of PAM; this is for | |
2351 | * Slackware Linux, and the algorithm was taken from the | |
2352 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2353 | */ | |
2354 | ||
2355 | int i; /* Looping var */ | |
2356 | unsigned long n; /* Output number */ | |
2357 | int pwlen; /* Length of password string */ | |
2358 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2359 | char *ptr; /* Pointer into result string */ | |
2360 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2361 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2362 | unsigned char digest[16]; /* MD5 digest result */ | |
2363 | static char result[120]; /* Final password string */ | |
2364 | ||
2365 | ||
2366 | /* | |
2367 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2368 | * Get a maximum of 8 characters of salt data after $1$... | |
2369 | */ | |
2370 | ||
2371 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2372 | if (*salt_end == '$') | |
2373 | break; | |
2374 | ||
2375 | /* | |
2376 | * Compute the MD5 sum we need... | |
2377 | */ | |
2378 | ||
2379 | pwlen = strlen(pw); | |
2380 | ||
757d2cad | 2381 | _cupsMD5Init(&state); |
2382 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2383 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2384 | |
757d2cad | 2385 | _cupsMD5Init(&state2); |
2386 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2387 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2388 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2389 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2390 | |
2391 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2392 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2393 | |
2394 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2395 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2396 | |
757d2cad | 2397 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2398 | |
2399 | for (i = 0; i < 1000; i ++) | |
2400 | { | |
757d2cad | 2401 | _cupsMD5Init(&state); |
ef416fc2 | 2402 | |
2403 | if (i & 1) | |
757d2cad | 2404 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2405 | else |
757d2cad | 2406 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2407 | |
2408 | if (i % 3) | |
757d2cad | 2409 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2410 | |
2411 | if (i % 7) | |
757d2cad | 2412 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2413 | |
2414 | if (i & 1) | |
757d2cad | 2415 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2416 | else |
757d2cad | 2417 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2418 | |
757d2cad | 2419 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2420 | } |
2421 | ||
2422 | /* | |
2423 | * Copy the final sum to the result string and return... | |
2424 | */ | |
2425 | ||
2426 | memcpy(result, salt, salt_end - salt); | |
2427 | ptr = result + (salt_end - salt); | |
2428 | *ptr++ = '$'; | |
2429 | ||
2430 | for (i = 0; i < 5; i ++, ptr += 4) | |
2431 | { | |
2432 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2433 | ||
2434 | if (i < 4) | |
2435 | n |= digest[i + 12]; | |
2436 | else | |
2437 | n |= digest[5]; | |
2438 | ||
2439 | to64(ptr, n, 4); | |
2440 | } | |
2441 | ||
2442 | to64(ptr, digest[11], 2); | |
2443 | ptr += 2; | |
2444 | *ptr = '\0'; | |
2445 | ||
2446 | return (result); | |
2447 | } | |
2448 | else | |
2449 | { | |
2450 | /* | |
2451 | * Use the standard crypt() function... | |
2452 | */ | |
2453 | ||
2454 | return (crypt(pw, salt)); | |
2455 | } | |
2456 | } | |
d09495fa | 2457 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
ef416fc2 | 2458 | |
2459 | ||
f7deaa1a | 2460 | #ifdef HAVE_GSSAPI |
2461 | /* | |
2462 | * 'get_gss_creds()' - Obtain GSS credentials. | |
2463 | */ | |
2464 | ||
2465 | static gss_cred_id_t /* O - Server credentials */ | |
2466 | get_gss_creds(const char *service_name) /* I - Service name */ | |
2467 | { | |
2468 | OM_uint32 major_status, /* Major status code */ | |
2469 | minor_status; /* Minor status code */ | |
2470 | gss_name_t server_name; /* Server name */ | |
2471 | gss_cred_id_t server_creds; /* Server credentials */ | |
2472 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
2473 | /* Service name token */ | |
2474 | char buf[1024], /* Service name buffer */ | |
2475 | fqdn[HTTP_MAX_URI]; /* Hostname of server */ | |
2476 | ||
2477 | ||
2478 | snprintf(buf, sizeof(buf), "%s@%s", service_name, | |
2479 | httpGetHostname(NULL, fqdn, sizeof(fqdn))); | |
2480 | ||
2481 | token.value = buf; | |
2482 | token.length = strlen(buf); | |
2483 | server_name = GSS_C_NO_NAME; | |
2484 | major_status = gss_import_name(&minor_status, &token, | |
2485 | GSS_C_NT_HOSTBASED_SERVICE, | |
2486 | &server_name); | |
2487 | ||
2488 | memset(&token, 0, sizeof(token)); | |
2489 | ||
2490 | if (GSS_ERROR(major_status)) | |
2491 | { | |
2492 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2493 | "gss_import_name() failed"); | |
2494 | return (NULL); | |
2495 | } | |
2496 | ||
2497 | major_status = gss_display_name(&minor_status, server_name, &token, NULL); | |
2498 | ||
2499 | if (GSS_ERROR(major_status)) | |
2500 | { | |
2501 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2502 | "gss_display_name() failed"); | |
2503 | return (NULL); | |
2504 | } | |
2505 | ||
c24d2134 MS |
2506 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2507 | "get_gss_creds: Attempting to acquire credentials for %s...", | |
f7deaa1a | 2508 | (char *)token.value); |
2509 | ||
2510 | server_creds = GSS_C_NO_CREDENTIAL; | |
2511 | major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE, | |
2512 | GSS_C_NO_OID_SET, GSS_C_ACCEPT, | |
2513 | &server_creds, NULL, NULL); | |
2514 | if (GSS_ERROR(major_status)) | |
2515 | { | |
2516 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2517 | "gss_acquire_cred() failed"); | |
2518 | gss_release_name(&minor_status, &server_name); | |
2519 | gss_release_buffer(&minor_status, &token); | |
2520 | return (NULL); | |
2521 | } | |
2522 | ||
c24d2134 MS |
2523 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2524 | "get_gss_creds: Credentials acquired successfully for %s.", | |
f7deaa1a | 2525 | (char *)token.value); |
2526 | ||
2527 | gss_release_name(&minor_status, &server_name); | |
2528 | gss_release_buffer(&minor_status, &token); | |
2529 | ||
2530 | return (server_creds); | |
2531 | } | |
2532 | #endif /* HAVE_GSSAPI */ | |
2533 | ||
2534 | ||
e1d6a774 | 2535 | /* |
2536 | * 'get_md5_password()' - Get an MD5 password. | |
2537 | */ | |
2538 | ||
2539 | static char * /* O - MD5 password string */ | |
2540 | get_md5_password(const char *username, /* I - Username */ | |
2541 | const char *group, /* I - Group */ | |
2542 | char passwd[33]) /* O - MD5 password string */ | |
2543 | { | |
2544 | cups_file_t *fp; /* passwd.md5 file */ | |
2545 | char filename[1024], /* passwd.md5 filename */ | |
2546 | line[256], /* Line from file */ | |
2547 | tempuser[33], /* User from file */ | |
2548 | tempgroup[33]; /* Group from file */ | |
2549 | ||
2550 | ||
2551 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2552 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2553 | username, group ? group : "(null)", passwd); | |
2554 | ||
2555 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2556 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2557 | { | |
2558 | if (errno != ENOENT) | |
2559 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2560 | strerror(errno)); | |
2561 | ||
2562 | return (NULL); | |
2563 | } | |
2564 | ||
2565 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2566 | { | |
2567 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2568 | { | |
2569 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2570 | continue; | |
2571 | } | |
2572 | ||
2573 | if (!strcmp(username, tempuser) && | |
2574 | (group == NULL || !strcmp(group, tempgroup))) | |
2575 | { | |
2576 | /* | |
2577 | * Found the password entry! | |
2578 | */ | |
2579 | ||
2580 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2581 | username, tempgroup); | |
2582 | ||
2583 | cupsFileClose(fp); | |
2584 | return (passwd); | |
2585 | } | |
2586 | } | |
2587 | ||
2588 | /* | |
2589 | * Didn't find a password entry - return NULL! | |
2590 | */ | |
2591 | ||
2592 | cupsFileClose(fp); | |
2593 | return (NULL); | |
2594 | } | |
2595 | ||
2596 | ||
ef416fc2 | 2597 | #if HAVE_LIBPAM |
2598 | /* | |
2599 | * 'pam_func()' - PAM conversation function. | |
2600 | */ | |
2601 | ||
2602 | static int /* O - Success or failure */ | |
2603 | pam_func( | |
2604 | int num_msg, /* I - Number of messages */ | |
2605 | const struct pam_message **msg, /* I - Messages */ | |
2606 | struct pam_response **resp, /* O - Responses */ | |
2607 | void *appdata_ptr) | |
2608 | /* I - Pointer to connection */ | |
2609 | { | |
2610 | int i; /* Looping var */ | |
2611 | struct pam_response *replies; /* Replies */ | |
2612 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2613 | ||
2614 | ||
2615 | /* | |
2616 | * Allocate memory for the responses... | |
2617 | */ | |
2618 | ||
2619 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2620 | return (PAM_CONV_ERR); | |
2621 | ||
2622 | /* | |
2623 | * Answer all of the messages... | |
2624 | */ | |
2625 | ||
2626 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2627 | ||
2628 | #ifdef __hpux | |
2629 | /* | |
2630 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2631 | * module. This is a workaround... | |
2632 | */ | |
2633 | ||
2634 | data = auth_data; | |
2635 | (void)appdata_ptr; | |
2636 | #else | |
2637 | data = (cupsd_authdata_t *)appdata_ptr; | |
2638 | #endif /* __hpux */ | |
2639 | ||
2640 | for (i = 0; i < num_msg; i ++) | |
2641 | { | |
2642 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2643 | ||
2644 | switch (msg[i]->msg_style) | |
2645 | { | |
2646 | case PAM_PROMPT_ECHO_ON: | |
2647 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2648 | data->username)); | |
2649 | replies[i].resp_retcode = PAM_SUCCESS; | |
2650 | replies[i].resp = strdup(data->username); | |
2651 | break; | |
2652 | ||
2653 | case PAM_PROMPT_ECHO_OFF: | |
2654 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2655 | data->password)); | |
2656 | replies[i].resp_retcode = PAM_SUCCESS; | |
2657 | replies[i].resp = strdup(data->password); | |
2658 | break; | |
2659 | ||
2660 | case PAM_TEXT_INFO: | |
2661 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2662 | replies[i].resp_retcode = PAM_SUCCESS; | |
2663 | replies[i].resp = NULL; | |
2664 | break; | |
2665 | ||
2666 | case PAM_ERROR_MSG: | |
2667 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2668 | replies[i].resp_retcode = PAM_SUCCESS; | |
2669 | replies[i].resp = NULL; | |
2670 | break; | |
2671 | ||
2672 | default: | |
2673 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2674 | msg[i]->msg_style)); | |
2675 | free(replies); | |
2676 | return (PAM_CONV_ERR); | |
2677 | } | |
2678 | } | |
2679 | ||
2680 | /* | |
2681 | * Return the responses back to PAM... | |
2682 | */ | |
2683 | ||
2684 | *resp = replies; | |
2685 | ||
2686 | return (PAM_SUCCESS); | |
2687 | } | |
f7deaa1a | 2688 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 2689 | |
2690 | ||
2691 | /* | |
2692 | * 'to64()' - Base64-encode an integer value... | |
2693 | */ | |
2694 | ||
2695 | static void | |
2696 | to64(char *s, /* O - Output string */ | |
2697 | unsigned long v, /* I - Value to encode */ | |
2698 | int n) /* I - Number of digits */ | |
2699 | { | |
2700 | const char *itoa64 = "./0123456789" | |
2701 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2702 | "abcdefghijklmnopqrstuvwxyz"; | |
2703 | ||
2704 | ||
2705 | for (; n > 0; n --, v >>= 6) | |
2706 | *s++ = itoa64[v & 0x3f]; | |
2707 | } | |
2708 | #endif /* HAVE_LIBPAM */ | |
2709 | ||
2710 | ||
2711 | /* | |
2e4ff8af | 2712 | * End of "$Id: auth.c 6947 2007-09-12 21:09:49Z mike $". |
ef416fc2 | 2713 | */ |