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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 |
3dfe78b3 MS |
117 | static gss_cred_id_t get_gss_creds(const char *service_name, |
118 | const char *con_server_name); | |
f7deaa1a | 119 | #endif /* HAVE_GSSAPI */ |
e1d6a774 | 120 | static char *get_md5_password(const char *username, |
121 | const char *group, char passwd[33]); | |
ef416fc2 | 122 | #if HAVE_LIBPAM |
123 | static int pam_func(int, const struct pam_message **, | |
124 | struct pam_response **, void *); | |
f7deaa1a | 125 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 126 | static void to64(char *s, unsigned long v, int n); |
127 | #endif /* HAVE_LIBPAM */ | |
128 | ||
129 | ||
130 | /* | |
131 | * Local structures... | |
132 | */ | |
133 | ||
134 | #if HAVE_LIBPAM | |
135 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
136 | { | |
137 | char username[33], /* Username string */ | |
138 | password[33]; /* Password string */ | |
139 | } cupsd_authdata_t; | |
140 | #endif /* HAVE_LIBPAM */ | |
141 | ||
142 | ||
143 | /* | |
144 | * Local globals... | |
145 | */ | |
146 | ||
f301802f | 147 | #if defined(__hpux) && HAVE_LIBPAM |
b423cd4c | 148 | static cupsd_authdata_t *auth_data; /* Current client being authenticated */ |
ef416fc2 | 149 | #endif /* __hpux && HAVE_LIBPAM */ |
150 | ||
151 | ||
152 | /* | |
153 | * 'cupsdAddLocation()' - Add a location for authorization. | |
154 | */ | |
155 | ||
156 | cupsd_location_t * /* O - Pointer to new location record */ | |
157 | cupsdAddLocation(const char *location) /* I - Location path */ | |
158 | { | |
159 | cupsd_location_t *temp; /* New location */ | |
160 | ||
161 | ||
162 | /* | |
bd7854cb | 163 | * Make sure the locations array is created... |
ef416fc2 | 164 | */ |
165 | ||
bd7854cb | 166 | if (!Locations) |
167 | Locations = cupsArrayNew((cups_array_func_t)compare_locations, NULL); | |
ef416fc2 | 168 | |
bd7854cb | 169 | if (!Locations) |
ef416fc2 | 170 | return (NULL); |
171 | ||
bd7854cb | 172 | /* |
173 | * Try to allocate memory for the new location. | |
174 | */ | |
175 | ||
176 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) | |
177 | return (NULL); | |
ef416fc2 | 178 | |
179 | /* | |
180 | * Initialize the record and copy the name over... | |
181 | */ | |
182 | ||
91c84a35 MS |
183 | if ((temp->location = strdup(location)) == NULL) |
184 | { | |
185 | free(temp); | |
186 | return (NULL); | |
187 | } | |
188 | ||
189 | temp->length = strlen(temp->location); | |
ef416fc2 | 190 | |
bd7854cb | 191 | cupsArrayAdd(Locations, temp); |
192 | ||
193 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: added location \'%s\'", | |
ef416fc2 | 194 | location); |
195 | ||
196 | /* | |
197 | * Return the new record... | |
198 | */ | |
199 | ||
200 | return (temp); | |
201 | } | |
202 | ||
203 | ||
204 | /* | |
205 | * 'cupsdAddName()' - Add a name to a location... | |
206 | */ | |
207 | ||
208 | void | |
209 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
210 | char *name) /* I - Name to add */ | |
211 | { | |
212 | char **temp; /* Pointer to names array */ | |
213 | ||
214 | ||
215 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", | |
216 | loc, name); | |
217 | ||
218 | if (loc->num_names == 0) | |
219 | temp = malloc(sizeof(char *)); | |
220 | else | |
221 | temp = realloc(loc->names, (loc->num_names + 1) * sizeof(char *)); | |
222 | ||
223 | if (temp == NULL) | |
224 | { | |
225 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to add name to location %s: %s", | |
e1d6a774 | 226 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 227 | return; |
228 | } | |
229 | ||
230 | loc->names = temp; | |
231 | ||
232 | if ((temp[loc->num_names] = strdup(name)) == NULL) | |
233 | { | |
234 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
235 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 236 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 237 | return; |
238 | } | |
239 | ||
240 | loc->num_names ++; | |
241 | } | |
242 | ||
243 | ||
244 | /* | |
245 | * 'cupsdAllowHost()' - Add a host name that is allowed to access the location. | |
246 | */ | |
247 | ||
248 | void | |
249 | cupsdAllowHost(cupsd_location_t *loc, /* I - Location to add to */ | |
250 | char *name) /* I - Name of host or domain to add */ | |
251 | { | |
252 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
253 | char ifname[32], /* Interface name */ | |
254 | *ifptr; /* Pointer to end of name */ | |
255 | ||
256 | ||
257 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAllowHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 258 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 259 | |
260 | if ((temp = add_allow(loc)) == NULL) | |
261 | return; | |
262 | ||
bd7854cb | 263 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 264 | { |
265 | /* | |
266 | * Allow *interface*... | |
267 | */ | |
268 | ||
5bd77a73 | 269 | temp->type = CUPSD_AUTH_INTERFACE; |
ef416fc2 | 270 | temp->mask.name.name = strdup("*"); |
271 | temp->mask.name.length = 1; | |
272 | } | |
bd7854cb | 273 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 274 | { |
275 | /* | |
276 | * Allow *interface*... | |
277 | */ | |
278 | ||
279 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
280 | ||
281 | ifptr = ifname + strlen(ifname); | |
282 | ||
283 | if (ifptr[-1] == ')') | |
284 | { | |
285 | ifptr --; | |
286 | *ifptr = '\0'; | |
287 | } | |
288 | ||
5bd77a73 | 289 | temp->type = CUPSD_AUTH_INTERFACE; |
ef416fc2 | 290 | temp->mask.name.name = strdup(ifname); |
291 | temp->mask.name.length = ifptr - ifname; | |
292 | } | |
293 | else | |
294 | { | |
295 | /* | |
296 | * Allow name... | |
297 | */ | |
298 | ||
5bd77a73 | 299 | temp->type = CUPSD_AUTH_NAME; |
ef416fc2 | 300 | temp->mask.name.name = strdup(name); |
301 | temp->mask.name.length = strlen(name); | |
302 | } | |
303 | } | |
304 | ||
305 | ||
306 | /* | |
307 | * 'cupsdAllowIP()' - Add an IP address or network that is allowed to access | |
308 | * the location. | |
309 | */ | |
310 | ||
311 | void | |
ac884b6a MS |
312 | cupsdAllowIP( |
313 | cupsd_location_t *loc, /* I - Location to add to */ | |
314 | const unsigned address[4], /* I - IP address to add */ | |
315 | const unsigned netmask[4]) /* I - Netmask of address */ | |
ef416fc2 | 316 | { |
317 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
318 | ||
319 | ||
320 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
321 | "cupsdAllowIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 322 | loc, loc->location ? loc->location : "nil", |
323 | address[0], address[1], address[2], address[3], | |
324 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 325 | |
326 | if ((temp = add_allow(loc)) == NULL) | |
327 | return; | |
328 | ||
5bd77a73 | 329 | temp->type = CUPSD_AUTH_IP; |
ef416fc2 | 330 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); |
331 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
332 | } | |
333 | ||
334 | ||
335 | /* | |
336 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
337 | */ | |
338 | ||
339 | void | |
340 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
341 | { | |
342 | int type; /* Authentication type */ | |
f7deaa1a | 343 | const char *authorization; /* Pointer into Authorization string */ |
344 | char *ptr, /* Pointer into string */ | |
db1f069b | 345 | username[256], /* Username string */ |
ef416fc2 | 346 | password[33]; /* Password string */ |
db0bd74a | 347 | cupsd_cert_t *localuser; /* Certificate username */ |
ef416fc2 | 348 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ |
349 | md5[33], /* MD5 password */ | |
350 | basicmd5[33]; /* MD5 of Basic password */ | |
351 | static const char * const states[] = /* HTTP client states... */ | |
352 | { | |
353 | "WAITING", | |
354 | "OPTIONS", | |
355 | "GET", | |
356 | "GET", | |
357 | "HEAD", | |
358 | "POST", | |
359 | "POST", | |
360 | "POST", | |
361 | "PUT", | |
362 | "PUT", | |
363 | "DELETE", | |
364 | "TRACE", | |
365 | "CLOSE", | |
366 | "STATUS" | |
367 | }; | |
368 | ||
369 | ||
370 | /* | |
371 | * Locate the best matching location so we know what kind of | |
372 | * authentication to expect... | |
373 | */ | |
374 | ||
375 | con->best = cupsdFindBest(con->uri, con->http.state); | |
5bd77a73 | 376 | con->type = CUPSD_AUTH_NONE; |
ef416fc2 | 377 | |
378 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
379 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
380 | con->uri, con->best, con->best ? con->best->location : ""); | |
381 | ||
5bd77a73 | 382 | if (con->best && con->best->type != CUPSD_AUTH_NONE) |
7ff4fea9 | 383 | { |
5bd77a73 | 384 | if (con->best->type == CUPSD_AUTH_DEFAULT) |
7ff4fea9 MS |
385 | type = DefaultAuthType; |
386 | else | |
387 | type = con->best->type; | |
388 | } | |
ef416fc2 | 389 | else |
390 | type = DefaultAuthType; | |
391 | ||
392 | /* | |
393 | * Decode the Authorization string... | |
394 | */ | |
395 | ||
f7deaa1a | 396 | authorization = httpGetField(&con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 397 | |
398 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
399 | authorization); | |
400 | ||
401 | username[0] = '\0'; | |
402 | password[0] = '\0'; | |
403 | ||
f7deaa1a | 404 | #ifdef HAVE_AUTHORIZATION_H |
405 | if (con->authref) | |
406 | { | |
407 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
408 | con->authref = NULL; | |
409 | } | |
410 | #endif /* HAVE_AUTHORIZATION_H */ | |
411 | ||
2fb76298 | 412 | if (!*authorization) |
ef416fc2 | 413 | { |
414 | /* | |
415 | * No authorization data provided, return early... | |
416 | */ | |
417 | ||
418 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
419 | "cupsdAuthorize: No authentication data provided."); | |
420 | return; | |
421 | } | |
f7deaa1a | 422 | #ifdef HAVE_AUTHORIZATION_H |
423 | else if (!strncmp(authorization, "AuthRef", 6) && | |
424 | !strcasecmp(con->http.hostname, "localhost")) | |
425 | { | |
426 | OSStatus status; /* Status */ | |
427 | int authlen; /* Auth string length */ | |
428 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
429 | ||
430 | /* | |
431 | * Get the Authorization Services data... | |
432 | */ | |
433 | ||
434 | authorization += 7; | |
435 | while (isspace(*authorization & 255)) | |
436 | authorization ++; | |
437 | ||
438 | authlen = sizeof(nonce); | |
439 | httpDecode64_2(nonce, &authlen, authorization); | |
440 | ||
441 | if (authlen != kAuthorizationExternalFormLength) | |
442 | { | |
443 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 444 | "External Authorization reference size is incorrect!"); |
f7deaa1a | 445 | return; |
446 | } | |
447 | ||
448 | if ((status = AuthorizationCreateFromExternalForm( | |
449 | (AuthorizationExternalForm *)nonce, &con->authref)) != 0) | |
450 | { | |
451 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 452 | "AuthorizationCreateFromExternalForm returned %d (%s)", |
f7deaa1a | 453 | (int)status, cssmErrorString(status)); |
454 | return; | |
455 | } | |
456 | ||
457 | if ((status = AuthorizationCopyInfo(con->authref, | |
458 | kAuthorizationEnvironmentUsername, | |
459 | &authinfo)) != 0) | |
460 | { | |
461 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 462 | "AuthorizationCopyInfo returned %d (%s)", |
f7deaa1a | 463 | (int)status, cssmErrorString(status)); |
464 | return; | |
465 | } | |
466 | ||
467 | if (authinfo->count == 1) | |
468 | strlcpy(username, authinfo->items[0].value, sizeof(username)); | |
469 | ||
355e94dc MS |
470 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
471 | "cupsdAuthorize: Authorized as %s using AuthRef", | |
472 | username); | |
473 | ||
f7deaa1a | 474 | AuthorizationFreeItemSet(authinfo); |
2fb76298 | 475 | |
5bd77a73 | 476 | con->type = CUPSD_AUTH_BASIC; |
f7deaa1a | 477 | } |
478 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 479 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
480 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
481 | con->http.hostaddr->addr.sa_family == AF_LOCAL) | |
482 | { | |
483 | /* | |
484 | * Use peer credentials from domain socket connection... | |
485 | */ | |
486 | ||
487 | struct passwd *pwd; /* Password entry for this user */ | |
488 | cupsd_ucred_t peercred; /* Peer credentials */ | |
489 | socklen_t peersize; /* Size of peer credentials */ | |
490 | ||
491 | ||
492 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
493 | { | |
494 | cupsdLogMessage(CUPSD_LOG_ERROR, "User \"%s\" does not exist!", | |
495 | authorization + 9); | |
496 | return; | |
497 | } | |
498 | ||
499 | peersize = sizeof(peercred); | |
500 | ||
501 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) | |
502 | { | |
503 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
504 | strerror(errno)); | |
505 | return; | |
506 | } | |
507 | ||
508 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
509 | { | |
510 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
511 | "Invalid peer credentials for \"%s\" - got %d, " | |
512 | "expected %d!", authorization + 9, | |
513 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); | |
514 | # ifdef HAVE_SYS_UCRED_H | |
515 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_version=%d", | |
516 | peercred.cr_version); | |
517 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_uid=%d", | |
518 | peercred.cr_uid); | |
519 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_ngroups=%d", | |
520 | peercred.cr_ngroups); | |
521 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_groups[0]=%d", | |
522 | peercred.cr_groups[0]); | |
523 | # endif /* HAVE_SYS_UCRED_H */ | |
524 | return; | |
525 | } | |
526 | ||
527 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc MS |
528 | |
529 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
530 | "cupsdAuthorize: Authorized as %s using PeerCred", | |
531 | username); | |
2fb76298 | 532 | |
5bd77a73 | 533 | con->type = CUPSD_AUTH_BASIC; |
bc44d920 | 534 | } |
535 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 536 | else if (!strncmp(authorization, "Local", 5) && |
537 | !strcasecmp(con->http.hostname, "localhost")) | |
538 | { | |
539 | /* | |
540 | * Get Local certificate authentication data... | |
541 | */ | |
542 | ||
543 | authorization += 5; | |
80ca4592 | 544 | while (isspace(*authorization & 255)) |
ef416fc2 | 545 | authorization ++; |
546 | ||
547 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
355e94dc | 548 | { |
db0bd74a | 549 | strlcpy(username, localuser->username, sizeof(username)); |
355e94dc MS |
550 | |
551 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
552 | "cupsdAuthorize: Authorized as %s using Local", | |
553 | username); | |
554 | } | |
ef416fc2 | 555 | else |
556 | { | |
557 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
558 | "cupsdAuthorize: Local authentication certificate not " | |
559 | "found!"); | |
560 | return; | |
561 | } | |
2fb76298 | 562 | |
db0bd74a MS |
563 | #ifdef HAVE_GSSAPI |
564 | if (localuser->ccache) | |
565 | con->type = CUPSD_AUTH_NEGOTIATE; | |
566 | else | |
567 | #endif /* HAVE_GSSAPI */ | |
568 | con->type = CUPSD_AUTH_BASIC; | |
ef416fc2 | 569 | } |
2fb76298 | 570 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 571 | { |
572 | /* | |
573 | * Get the Basic authentication data... | |
574 | */ | |
575 | ||
576 | int userlen; /* Username:password length */ | |
577 | ||
578 | ||
579 | authorization += 5; | |
80ca4592 | 580 | while (isspace(*authorization & 255)) |
ef416fc2 | 581 | authorization ++; |
582 | ||
583 | userlen = sizeof(username); | |
584 | httpDecode64_2(username, &userlen, authorization); | |
585 | ||
586 | /* | |
587 | * Pull the username and password out... | |
588 | */ | |
589 | ||
590 | if ((ptr = strchr(username, ':')) == NULL) | |
591 | { | |
592 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
593 | "cupsdAuthorize: Missing Basic password!"); | |
594 | return; | |
595 | } | |
596 | ||
597 | *ptr++ = '\0'; | |
598 | ||
599 | if (!username[0]) | |
600 | { | |
601 | /* | |
602 | * Username must not be empty... | |
603 | */ | |
604 | ||
605 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
606 | "cupsdAuthorize: Empty Basic username!"); | |
607 | return; | |
608 | } | |
609 | ||
610 | if (!*ptr) | |
611 | { | |
612 | /* | |
613 | * Password must not be empty... | |
614 | */ | |
615 | ||
616 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
617 | "cupsdAuthorize: Empty Basic password!"); | |
618 | return; | |
619 | } | |
620 | ||
621 | strlcpy(password, ptr, sizeof(password)); | |
622 | ||
623 | /* | |
624 | * Validate the username and password... | |
625 | */ | |
626 | ||
627 | switch (type) | |
628 | { | |
2fb76298 | 629 | default : |
5bd77a73 | 630 | case CUPSD_AUTH_BASIC : |
ef416fc2 | 631 | { |
632 | #if HAVE_LIBPAM | |
633 | /* | |
634 | * Only use PAM to do authentication. This supports MD5 | |
635 | * passwords, among other things... | |
636 | */ | |
637 | ||
638 | pam_handle_t *pamh; /* PAM authentication handle */ | |
639 | int pamerr; /* PAM error code */ | |
640 | struct pam_conv pamdata;/* PAM conversation data */ | |
641 | cupsd_authdata_t data; /* Authentication data */ | |
642 | ||
643 | ||
644 | strlcpy(data.username, username, sizeof(data.username)); | |
645 | strlcpy(data.password, password, sizeof(data.password)); | |
646 | ||
07725fee | 647 | # if defined(__sun) || defined(__hpux) |
e1d6a774 | 648 | pamdata.conv = (int (*)(int, struct pam_message **, |
649 | struct pam_response **, | |
650 | void *))pam_func; | |
651 | # else | |
ef416fc2 | 652 | pamdata.conv = pam_func; |
07725fee | 653 | # endif /* __sun || __hpux */ |
ef416fc2 | 654 | pamdata.appdata_ptr = &data; |
655 | ||
656 | # ifdef __hpux | |
657 | /* | |
658 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
659 | * more info... | |
660 | */ | |
661 | ||
662 | auth_data = &data; | |
663 | # endif /* __hpux */ | |
664 | ||
665 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
666 | if (pamerr != PAM_SUCCESS) | |
667 | { | |
668 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
669 | "cupsdAuthorize: pam_start() returned %d (%s)!\n", | |
670 | pamerr, pam_strerror(pamh, pamerr)); | |
ef416fc2 | 671 | return; |
672 | } | |
673 | ||
a4924f6c MS |
674 | # if defined(HAVE_PAM_SET_ITEM) && defined(PAM_RHOST) |
675 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http.hostname); | |
676 | if (pamerr != PAM_SUCCESS) | |
677 | cupsdLogMessage(CUPSD_LOG_WARN, | |
678 | "cupsdAuthorize: pam_set_item() returned %d " | |
679 | "(%s)!\n", pamerr, pam_strerror(pamh, pamerr)); | |
680 | # endif /* HAVE_PAM_SET_ITEM && PAM_RHOST */ | |
681 | ||
ef416fc2 | 682 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
683 | if (pamerr != PAM_SUCCESS) | |
684 | { | |
685 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
686 | "cupsdAuthorize: pam_authenticate() returned %d " | |
687 | "(%s)!\n", | |
688 | pamerr, pam_strerror(pamh, pamerr)); | |
689 | pam_end(pamh, 0); | |
690 | return; | |
691 | } | |
692 | ||
693 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); | |
694 | if (pamerr != PAM_SUCCESS) | |
695 | { | |
696 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
697 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
698 | "(%s)!\n", | |
699 | pamerr, pam_strerror(pamh, pamerr)); | |
700 | pam_end(pamh, 0); | |
701 | return; | |
702 | } | |
703 | ||
704 | pam_end(pamh, PAM_SUCCESS); | |
705 | ||
706 | #elif defined(HAVE_USERSEC_H) | |
707 | /* | |
708 | * Use AIX authentication interface... | |
709 | */ | |
710 | ||
711 | char *authmsg; /* Authentication message */ | |
ef416fc2 | 712 | int reenter; /* ??? */ |
713 | ||
714 | ||
715 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
716 | "cupsdAuthorize: AIX authenticate of username \"%s\"", | |
717 | username); | |
718 | ||
719 | reenter = 1; | |
720 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
721 | { | |
722 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
723 | "cupsdAuthorize: Unable to authenticate username " | |
724 | "\"%s\": %s", | |
725 | username, strerror(errno)); | |
726 | return; | |
727 | } | |
728 | ||
729 | #else | |
730 | /* | |
731 | * Use normal UNIX password file-based authentication... | |
732 | */ | |
733 | ||
734 | char *pass; /* Encrypted password */ | |
735 | struct passwd *pw; /* User password data */ | |
736 | # ifdef HAVE_SHADOW_H | |
737 | struct spwd *spw; /* Shadow password data */ | |
738 | # endif /* HAVE_SHADOW_H */ | |
739 | ||
740 | ||
741 | pw = getpwnam(username); /* Get the current password */ | |
742 | endpwent(); /* Close the password file */ | |
743 | ||
744 | if (!pw) | |
745 | { | |
746 | /* | |
747 | * No such user... | |
748 | */ | |
749 | ||
750 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
751 | "cupsdAuthorize: Unknown username \"%s\"!", | |
752 | username); | |
80ca4592 | 753 | return; |
ef416fc2 | 754 | } |
755 | ||
756 | # ifdef HAVE_SHADOW_H | |
757 | spw = getspnam(username); | |
758 | endspent(); | |
759 | ||
760 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
761 | { | |
762 | /* | |
763 | * Don't allow blank passwords! | |
764 | */ | |
765 | ||
766 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
767 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
768 | "password!", username); | |
769 | return; | |
770 | } | |
771 | ||
772 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
773 | # else | |
774 | if (!pw->pw_passwd[0]) | |
775 | # endif /* HAVE_SHADOW_H */ | |
776 | { | |
777 | /* | |
778 | * Don't allow blank passwords! | |
779 | */ | |
780 | ||
781 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
782 | "cupsdAuthorize: Username \"%s\" has no password!", | |
783 | username); | |
784 | return; | |
785 | } | |
786 | ||
787 | /* | |
788 | * OK, the password isn't blank, so compare with what came from the | |
789 | * client... | |
790 | */ | |
791 | ||
792 | pass = cups_crypt(password, pw->pw_passwd); | |
793 | ||
794 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
795 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
796 | pw->pw_passwd, pass); | |
797 | ||
798 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
799 | { | |
800 | # ifdef HAVE_SHADOW_H | |
801 | if (spw) | |
802 | { | |
803 | pass = cups_crypt(password, spw->sp_pwdp); | |
804 | ||
805 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
806 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
807 | spw->sp_pwdp, pass); | |
808 | ||
809 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
810 | { | |
811 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
812 | "cupsdAuthorize: Authentication failed for " | |
813 | "user \"%s\"!", | |
814 | username); | |
815 | return; | |
816 | } | |
817 | } | |
818 | else | |
819 | # endif /* HAVE_SHADOW_H */ | |
820 | { | |
821 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
822 | "cupsdAuthorize: Authentication failed for " | |
823 | "user \"%s\"!", | |
824 | username); | |
825 | return; | |
826 | } | |
827 | } | |
828 | #endif /* HAVE_LIBPAM */ | |
829 | } | |
355e94dc MS |
830 | |
831 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
832 | "cupsdAuthorize: Authorized as %s using Basic", | |
833 | username); | |
ef416fc2 | 834 | break; |
835 | ||
5bd77a73 | 836 | case CUPSD_AUTH_BASICDIGEST : |
ef416fc2 | 837 | /* |
838 | * Do Basic authentication with the Digest password file... | |
839 | */ | |
840 | ||
e1d6a774 | 841 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 842 | { |
843 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
844 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
845 | username); | |
846 | return; | |
847 | } | |
848 | ||
849 | httpMD5(username, "CUPS", password, basicmd5); | |
850 | ||
851 | if (strcmp(md5, basicmd5)) | |
852 | { | |
853 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
854 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
855 | username); | |
856 | return; | |
857 | } | |
355e94dc MS |
858 | |
859 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
860 | "cupsdAuthorize: Authorized as %s using BasicDigest", | |
861 | username); | |
ef416fc2 | 862 | break; |
863 | } | |
2fb76298 MS |
864 | |
865 | con->type = type; | |
ef416fc2 | 866 | } |
2fb76298 | 867 | else if (!strncmp(authorization, "Digest", 6)) |
ef416fc2 | 868 | { |
869 | /* | |
870 | * Get the username, password, and nonce from the Digest attributes... | |
871 | */ | |
872 | ||
873 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
874 | username, sizeof(username)) || !username[0]) | |
875 | { | |
876 | /* | |
877 | * Username must not be empty... | |
878 | */ | |
879 | ||
880 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
881 | "cupsdAuthorize: Empty or missing Digest username!"); | |
882 | return; | |
883 | } | |
884 | ||
885 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
886 | password, sizeof(password)) || !password[0]) | |
887 | { | |
888 | /* | |
889 | * Password must not be empty... | |
890 | */ | |
891 | ||
892 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
893 | "cupsdAuthorize: Empty or missing Digest password!"); | |
894 | return; | |
895 | } | |
896 | ||
897 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
898 | nonce)) | |
899 | { | |
900 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
901 | "cupsdAuthorize: No nonce value for Digest " | |
902 | "authentication!"); | |
903 | return; | |
904 | } | |
905 | ||
906 | if (strcmp(con->http.hostname, nonce)) | |
907 | { | |
908 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
909 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
910 | "got \"%s\"!", con->http.hostname, nonce); | |
911 | return; | |
912 | } | |
913 | ||
914 | /* | |
915 | * Validate the username and password... | |
916 | */ | |
917 | ||
e1d6a774 | 918 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 919 | { |
920 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
921 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
922 | username); | |
923 | return; | |
924 | } | |
925 | ||
926 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
927 | ||
928 | if (strcmp(md5, password)) | |
929 | { | |
930 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
931 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
932 | username); | |
933 | return; | |
934 | } | |
355e94dc MS |
935 | |
936 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
937 | "cupsdAuthorize: Authorized as %s using Digest", | |
938 | username); | |
2fb76298 | 939 | |
5bd77a73 | 940 | con->type = CUPSD_AUTH_DIGEST; |
ef416fc2 | 941 | } |
f7deaa1a | 942 | #ifdef HAVE_GSSAPI |
db1f069b | 943 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 944 | { |
945 | int len; /* Length of authorization string */ | |
946 | gss_cred_id_t server_creds; /* Server credentials */ | |
947 | gss_ctx_id_t context; /* Authorization context */ | |
948 | OM_uint32 major_status, /* Major status code */ | |
949 | minor_status; /* Minor status code */ | |
950 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
951 | /* Input token from string */ | |
952 | output_token = GSS_C_EMPTY_BUFFER; | |
953 | /* Output token for username */ | |
954 | gss_name_t client_name; /* Client name */ | |
c24d2134 | 955 | unsigned int ret_flags; /* Credential flags */ |
f7deaa1a | 956 | |
957 | ||
f42414bf | 958 | # ifdef __APPLE__ |
959 | /* | |
960 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
961 | * to use it... | |
962 | */ | |
963 | ||
964 | if (gss_init_sec_context == NULL) | |
965 | { | |
966 | cupsdLogMessage(CUPSD_LOG_WARN, | |
967 | "GSSAPI/Kerberos authentication failed because the " | |
968 | "Kerberos framework is not present."); | |
969 | return; | |
970 | } | |
971 | # endif /* __APPLE__ */ | |
972 | ||
f7deaa1a | 973 | con->gss_output_token.length = 0; |
974 | ||
975 | /* | |
976 | * Find the start of the Kerberos input token... | |
977 | */ | |
978 | ||
979 | authorization += 9; | |
980 | while (isspace(*authorization & 255)) | |
981 | authorization ++; | |
982 | ||
983 | if (!*authorization) | |
984 | { | |
985 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
986 | "cupsdAuthorize: No authentication data specified."); | |
987 | return; | |
988 | } | |
989 | ||
990 | /* | |
991 | * Get the server credentials... | |
992 | */ | |
993 | ||
3dfe78b3 | 994 | if ((server_creds = get_gss_creds(GSSServiceName, con->servername)) == NULL) |
f7deaa1a | 995 | return; |
f7deaa1a | 996 | |
997 | /* | |
998 | * Decode the authorization string to get the input token... | |
999 | */ | |
1000 | ||
1001 | len = strlen(authorization); | |
1002 | input_token.value = malloc(len); | |
1003 | input_token.value = httpDecode64_2(input_token.value, &len, | |
1004 | authorization); | |
1005 | input_token.length = len; | |
1006 | ||
1007 | /* | |
1008 | * Accept the input token to get the authorization info... | |
1009 | */ | |
1010 | ||
1011 | context = GSS_C_NO_CONTEXT; | |
1012 | client_name = GSS_C_NO_NAME; | |
1013 | major_status = gss_accept_sec_context(&minor_status, | |
1014 | &context, | |
1015 | server_creds, | |
1016 | &input_token, | |
1017 | GSS_C_NO_CHANNEL_BINDINGS, | |
1018 | &client_name, | |
1019 | NULL, | |
1020 | &con->gss_output_token, | |
c24d2134 | 1021 | &ret_flags, |
f7deaa1a | 1022 | NULL, |
1023 | &con->gss_delegated_cred); | |
1024 | ||
1025 | if (GSS_ERROR(major_status)) | |
1026 | { | |
1027 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1028 | "cupsdAuthorize: Error accepting GSSAPI security " | |
1029 | "context"); | |
1030 | ||
1031 | if (context != GSS_C_NO_CONTEXT) | |
1032 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
76cd9e37 MS |
1033 | |
1034 | gss_release_cred(&minor_status, &server_creds); | |
f7deaa1a | 1035 | return; |
1036 | } | |
1037 | ||
1038 | /* | |
76cd9e37 MS |
1039 | * Release our credentials... |
1040 | */ | |
1041 | ||
1042 | gss_release_cred(&minor_status, &server_creds); | |
1043 | ||
1044 | /* | |
1045 | * Get the username associated with the client's credentials... | |
f7deaa1a | 1046 | */ |
1047 | ||
355e94dc MS |
1048 | if (!con->gss_delegated_cred) |
1049 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1050 | "cupsdAuthorize: No delegated credentials!"); | |
1051 | ||
1052 | if (major_status == GSS_S_CONTINUE_NEEDED) | |
1053 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1054 | "cupsdAuthorize: Credentials not complete"); | |
1055 | else if (major_status == GSS_S_COMPLETE) | |
f7deaa1a | 1056 | { |
1057 | major_status = gss_display_name(&minor_status, client_name, | |
1058 | &output_token, NULL); | |
1059 | ||
1060 | if (GSS_ERROR(major_status)) | |
1061 | { | |
1062 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1063 | "cupsdAuthorize: Error getting username"); | |
1064 | gss_release_name(&minor_status, &client_name); | |
1065 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1066 | return; |
1067 | } | |
1068 | ||
1069 | gss_release_name(&minor_status, &client_name); | |
1070 | strlcpy(username, output_token.value, sizeof(username)); | |
355e94dc MS |
1071 | |
1072 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1073 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1074 | username); | |
f7deaa1a | 1075 | |
1076 | gss_release_buffer(&minor_status, &output_token); | |
1077 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
09a101d6 | 1078 | |
1079 | con->gss_have_creds = 1; | |
2fb76298 | 1080 | |
5bd77a73 | 1081 | con->type = CUPSD_AUTH_NEGOTIATE; |
f7deaa1a | 1082 | } |
1083 | else | |
1084 | gss_release_name(&minor_status, &client_name); | |
1085 | } | |
1086 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 1087 | else |
ef416fc2 | 1088 | { |
355e94dc | 1089 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
1090 | |
1091 | ||
1092 | if (sscanf(authorization, "%255s", scheme) != 1) | |
1093 | strcpy(scheme, "UNKNOWN"); | |
1094 | ||
2fb76298 MS |
1095 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\"", |
1096 | scheme); | |
ef416fc2 | 1097 | return; |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * If we get here, then we were able to validate the username and | |
1102 | * password - copy the validated username and password to the client | |
1103 | * data and return... | |
1104 | */ | |
1105 | ||
1106 | strlcpy(con->username, username, sizeof(con->username)); | |
1107 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1108 | } |
1109 | ||
1110 | ||
080811b1 MS |
1111 | /* |
1112 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
1113 | * access a location. | |
1114 | */ | |
1115 | ||
1116 | int /* O - 1 if allowed, 0 otherwise */ | |
1117 | cupsdCheckAccess( | |
1118 | unsigned ip[4], /* I - Client address */ | |
1119 | char *name, /* I - Client hostname */ | |
1120 | int namelen, /* I - Length of hostname */ | |
1121 | cupsd_location_t *loc) /* I - Location to check */ | |
1122 | { | |
1123 | int allow; /* 1 if allowed, 0 otherwise */ | |
1124 | ||
1125 | ||
1126 | if (!strcasecmp(name, "localhost")) | |
1127 | { | |
1128 | /* | |
1129 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
1130 | */ | |
1131 | ||
1132 | return (1); | |
1133 | } | |
1134 | else | |
1135 | { | |
1136 | /* | |
1137 | * Do authorization checks on the domain/address... | |
1138 | */ | |
1139 | ||
1140 | switch (loc->order_type) | |
1141 | { | |
1142 | default : | |
1143 | allow = 0; /* anti-compiler-warning-code */ | |
1144 | break; | |
1145 | ||
5bd77a73 | 1146 | case CUPSD_AUTH_ALLOW : /* Order Deny,Allow */ |
080811b1 MS |
1147 | allow = 1; |
1148 | ||
1149 | if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny)) | |
1150 | allow = 0; | |
1151 | ||
1152 | if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow)) | |
1153 | allow = 1; | |
1154 | break; | |
1155 | ||
5bd77a73 | 1156 | case CUPSD_AUTH_DENY : /* Order Allow,Deny */ |
080811b1 MS |
1157 | allow = 0; |
1158 | ||
1159 | if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow)) | |
1160 | allow = 1; | |
1161 | ||
1162 | if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny)) | |
1163 | allow = 0; | |
1164 | break; | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | return (allow); | |
1169 | } | |
1170 | ||
1171 | ||
ef416fc2 | 1172 | /* |
1173 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1174 | */ | |
1175 | ||
1176 | int /* O - 1 if mask matches, 0 otherwise */ | |
1177 | cupsdCheckAuth( | |
1178 | unsigned ip[4], /* I - Client address */ | |
1179 | char *name, /* I - Client hostname */ | |
1180 | int name_len, /* I - Length of hostname */ | |
1181 | int num_masks, /* I - Number of masks */ | |
1182 | cupsd_authmask_t *masks) /* I - Masks */ | |
1183 | { | |
1184 | int i; /* Looping var */ | |
1185 | cupsd_netif_t *iface; /* Network interface */ | |
1186 | unsigned netip4; /* IPv4 network address */ | |
1187 | #ifdef AF_INET6 | |
1188 | unsigned netip6[4]; /* IPv6 network address */ | |
1189 | #endif /* AF_INET6 */ | |
1190 | ||
1191 | while (num_masks > 0) | |
1192 | { | |
1193 | switch (masks->type) | |
1194 | { | |
5bd77a73 | 1195 | case CUPSD_AUTH_INTERFACE : |
ef416fc2 | 1196 | /* |
1197 | * Check for a match with a network interface... | |
1198 | */ | |
1199 | ||
1200 | netip4 = htonl(ip[3]); | |
1201 | ||
1202 | #ifdef AF_INET6 | |
1203 | netip6[0] = htonl(ip[0]); | |
1204 | netip6[1] = htonl(ip[1]); | |
1205 | netip6[2] = htonl(ip[2]); | |
1206 | netip6[3] = htonl(ip[3]); | |
1207 | #endif /* AF_INET6 */ | |
1208 | ||
1209 | if (!strcmp(masks->mask.name.name, "*")) | |
1210 | { | |
1211 | /* | |
1212 | * Check against all local interfaces... | |
1213 | */ | |
1214 | ||
1215 | cupsdNetIFUpdate(); | |
1216 | ||
e00b005a | 1217 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1218 | iface; | |
1219 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1220 | { |
1221 | /* | |
1222 | * Only check local interfaces... | |
1223 | */ | |
1224 | ||
1225 | if (!iface->is_local) | |
1226 | continue; | |
1227 | ||
1228 | if (iface->address.addr.sa_family == AF_INET) | |
1229 | { | |
1230 | /* | |
1231 | * Check IPv4 address... | |
1232 | */ | |
1233 | ||
1234 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1235 | (iface->address.ipv4.sin_addr.s_addr & | |
1236 | iface->mask.ipv4.sin_addr.s_addr)) | |
1237 | return (1); | |
1238 | } | |
1239 | #ifdef AF_INET6 | |
1240 | else | |
1241 | { | |
1242 | /* | |
1243 | * Check IPv6 address... | |
1244 | */ | |
1245 | ||
1246 | for (i = 0; i < 4; i ++) | |
1247 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1248 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1249 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1250 | break; | |
1251 | ||
1252 | if (i == 4) | |
1253 | return (1); | |
1254 | } | |
1255 | #endif /* AF_INET6 */ | |
1256 | } | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | /* | |
1261 | * Check the named interface... | |
1262 | */ | |
1263 | ||
e00b005a | 1264 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1265 | iface; |
e00b005a | 1266 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1267 | { |
ed486911 | 1268 | if (strcmp(masks->mask.name.name, iface->name)) |
1269 | continue; | |
1270 | ||
ef416fc2 | 1271 | if (iface->address.addr.sa_family == AF_INET) |
1272 | { | |
1273 | /* | |
1274 | * Check IPv4 address... | |
1275 | */ | |
1276 | ||
1277 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1278 | (iface->address.ipv4.sin_addr.s_addr & | |
1279 | iface->mask.ipv4.sin_addr.s_addr)) | |
1280 | return (1); | |
1281 | } | |
1282 | #ifdef AF_INET6 | |
1283 | else | |
1284 | { | |
1285 | /* | |
1286 | * Check IPv6 address... | |
1287 | */ | |
1288 | ||
1289 | for (i = 0; i < 4; i ++) | |
1290 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1291 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1292 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1293 | break; | |
1294 | ||
1295 | if (i == 4) | |
1296 | return (1); | |
1297 | } | |
1298 | #endif /* AF_INET6 */ | |
1299 | } | |
1300 | } | |
1301 | break; | |
1302 | ||
5bd77a73 | 1303 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1304 | /* |
1305 | * Check for exact name match... | |
1306 | */ | |
1307 | ||
1308 | if (!strcasecmp(name, masks->mask.name.name)) | |
1309 | return (1); | |
1310 | ||
1311 | /* | |
1312 | * Check for domain match... | |
1313 | */ | |
1314 | ||
1315 | if (name_len >= masks->mask.name.length && | |
1316 | masks->mask.name.name[0] == '.' && | |
bd7854cb | 1317 | !strcasecmp(name + name_len - masks->mask.name.length, |
1318 | masks->mask.name.name)) | |
ef416fc2 | 1319 | return (1); |
1320 | break; | |
1321 | ||
5bd77a73 | 1322 | case CUPSD_AUTH_IP : |
ef416fc2 | 1323 | /* |
1324 | * Check for IP/network address match... | |
1325 | */ | |
1326 | ||
1327 | for (i = 0; i < 4; i ++) | |
1328 | if ((ip[i] & masks->mask.ip.netmask[i]) != | |
1329 | masks->mask.ip.address[i]) | |
1330 | break; | |
1331 | ||
1332 | if (i == 4) | |
1333 | return (1); | |
1334 | break; | |
1335 | } | |
1336 | ||
1337 | masks ++; | |
1338 | num_masks --; | |
1339 | } | |
1340 | ||
1341 | return (0); | |
1342 | } | |
1343 | ||
1344 | ||
1345 | /* | |
1346 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1347 | */ | |
1348 | ||
1349 | int /* O - 1 if user is a member, 0 otherwise */ | |
1350 | cupsdCheckGroup( | |
1351 | const char *username, /* I - User name */ | |
1352 | struct passwd *user, /* I - System user info */ | |
1353 | const char *groupname) /* I - Group name */ | |
1354 | { | |
8922323b MS |
1355 | int i; /* Looping var */ |
1356 | struct group *group; /* System group info */ | |
1357 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 1358 | #ifdef HAVE_MBR_UID_TO_UUID |
8922323b MS |
1359 | uuid_t useruuid, /* UUID for username */ |
1360 | groupuuid; /* UUID for groupname */ | |
1361 | int is_member; /* True if user is a member of group */ | |
bd7854cb | 1362 | #endif /* HAVE_MBR_UID_TO_UUID */ |
ef416fc2 | 1363 | |
1364 | ||
1365 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1366 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1367 | username, user, groupname); | |
1368 | ||
1369 | /* | |
1370 | * Validate input... | |
1371 | */ | |
1372 | ||
1373 | if (!username || !groupname) | |
1374 | return (0); | |
1375 | ||
1376 | /* | |
1377 | * Check to see if the user is a member of the named group... | |
1378 | */ | |
1379 | ||
1380 | group = getgrnam(groupname); | |
1381 | endgrent(); | |
1382 | ||
1383 | if (group != NULL) | |
1384 | { | |
1385 | /* | |
1386 | * Group exists, check it... | |
1387 | */ | |
1388 | ||
1389 | for (i = 0; group->gr_mem[i]; i ++) | |
1390 | if (!strcasecmp(username, group->gr_mem[i])) | |
1391 | return (1); | |
1392 | } | |
1393 | ||
1394 | /* | |
1395 | * Group doesn't exist or user not in group list, check the group ID | |
1396 | * against the user's group ID... | |
1397 | */ | |
1398 | ||
1399 | if (user && group && group->gr_gid == user->pw_gid) | |
1400 | return (1); | |
1401 | ||
bd7854cb | 1402 | #ifdef HAVE_MBR_UID_TO_UUID |
1403 | /* | |
1404 | * Check group membership through MacOS X membership API... | |
1405 | */ | |
1406 | ||
8922323b | 1407 | if (!mbr_uid_to_uuid(user->pw_uid, useruuid)) |
c9fc04c6 | 1408 | { |
8922323b MS |
1409 | if (group) |
1410 | { | |
1411 | /* | |
1412 | * Map group name to UUID and check membership... | |
1413 | */ | |
c9fc04c6 | 1414 | |
8922323b MS |
1415 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) |
1416 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1417 | if (is_member) | |
1418 | return (1); | |
1419 | } | |
1420 | else if (groupname[0] == '#') | |
1421 | { | |
1422 | /* | |
1423 | * Use UUID directly and check for equality (user UUID) and | |
1424 | * membership (group UUID)... | |
1425 | */ | |
1426 | ||
1427 | if (!uuid_parse((char *)groupname + 1, groupuuid)) | |
1428 | { | |
1429 | if (!uuid_compare(useruuid, groupuuid)) | |
c9fc04c6 | 1430 | return (1); |
8922323b MS |
1431 | else if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1432 | if (is_member) | |
1433 | return (1); | |
1434 | } | |
1435 | ||
1436 | return (0); | |
1437 | } | |
1438 | } | |
1439 | else if (groupname[0] == '#') | |
1440 | return (0); | |
bd7854cb | 1441 | #endif /* HAVE_MBR_UID_TO_UUID */ |
1442 | ||
ef416fc2 | 1443 | /* |
1444 | * Username not found, group not found, or user is not part of the | |
1445 | * system group... Check for a user and group in the MD5 password | |
1446 | * file... | |
1447 | */ | |
1448 | ||
e1d6a774 | 1449 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1450 | return (1); |
1451 | ||
1452 | /* | |
1453 | * If we get this far, then the user isn't part of the named group... | |
1454 | */ | |
1455 | ||
1456 | return (0); | |
1457 | } | |
1458 | ||
1459 | ||
1460 | /* | |
1461 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1462 | */ | |
1463 | ||
1464 | cupsd_location_t * /* O - New location */ | |
1465 | cupsdCopyLocation( | |
1466 | cupsd_location_t **loc) /* IO - Original location */ | |
1467 | { | |
1468 | int i; /* Looping var */ | |
ef416fc2 | 1469 | cupsd_location_t *temp; /* New location */ |
1470 | char location[HTTP_MAX_URI]; | |
1471 | /* Location of resource */ | |
1472 | ||
1473 | ||
ef416fc2 | 1474 | /* |
1475 | * Use a local copy of location because cupsdAddLocation may cause | |
1476 | * this memory to be moved... | |
1477 | */ | |
1478 | ||
1479 | strlcpy(location, (*loc)->location, sizeof(location)); | |
1480 | ||
1481 | if ((temp = cupsdAddLocation(location)) == NULL) | |
1482 | return (NULL); | |
1483 | ||
ef416fc2 | 1484 | /* |
1485 | * Copy the information from the original location to the new one. | |
1486 | */ | |
1487 | ||
1488 | temp->limit = (*loc)->limit; | |
1489 | temp->order_type = (*loc)->order_type; | |
1490 | temp->type = (*loc)->type; | |
1491 | temp->level = (*loc)->level; | |
1492 | temp->satisfy = (*loc)->satisfy; | |
1493 | temp->encryption = (*loc)->encryption; | |
1494 | ||
1495 | if ((temp->num_names = (*loc)->num_names) > 0) | |
1496 | { | |
1497 | /* | |
1498 | * Copy the names array... | |
1499 | */ | |
1500 | ||
1501 | if ((temp->names = calloc(temp->num_names, sizeof(char *))) == NULL) | |
1502 | { | |
1503 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1504 | "cupsdCopyLocation: Unable to allocate memory for %d names: %s", | |
1505 | temp->num_names, strerror(errno)); | |
bd7854cb | 1506 | |
1507 | cupsdDeleteLocation(temp); | |
ef416fc2 | 1508 | return (NULL); |
1509 | } | |
1510 | ||
1511 | for (i = 0; i < temp->num_names; i ++) | |
1512 | if ((temp->names[i] = strdup((*loc)->names[i])) == NULL) | |
1513 | { | |
1514 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1515 | "cupsdCopyLocation: Unable to copy name \"%s\": %s", | |
1516 | (*loc)->names[i], strerror(errno)); | |
1517 | ||
bd7854cb | 1518 | cupsdDeleteLocation(temp); |
ef416fc2 | 1519 | return (NULL); |
1520 | } | |
1521 | } | |
1522 | ||
1523 | if ((temp->num_allow = (*loc)->num_allow) > 0) | |
1524 | { | |
1525 | /* | |
1526 | * Copy allow rules... | |
1527 | */ | |
1528 | ||
1529 | if ((temp->allow = calloc(temp->num_allow, sizeof(cupsd_authmask_t))) == NULL) | |
1530 | { | |
1531 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1532 | "cupsdCopyLocation: Unable to allocate memory for %d allow rules: %s", | |
1533 | temp->num_allow, strerror(errno)); | |
bd7854cb | 1534 | cupsdDeleteLocation(temp); |
ef416fc2 | 1535 | return (NULL); |
1536 | } | |
1537 | ||
1538 | for (i = 0; i < temp->num_allow; i ++) | |
1539 | switch (temp->allow[i].type = (*loc)->allow[i].type) | |
1540 | { | |
5bd77a73 | 1541 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1542 | temp->allow[i].mask.name.length = (*loc)->allow[i].mask.name.length; |
1543 | temp->allow[i].mask.name.name = strdup((*loc)->allow[i].mask.name.name); | |
1544 | ||
1545 | if (temp->allow[i].mask.name.name == NULL) | |
1546 | { | |
1547 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1548 | "cupsdCopyLocation: Unable to copy allow name \"%s\": %s", | |
1549 | (*loc)->allow[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1550 | cupsdDeleteLocation(temp); |
ef416fc2 | 1551 | return (NULL); |
1552 | } | |
1553 | break; | |
5bd77a73 | 1554 | case CUPSD_AUTH_IP : |
ef416fc2 | 1555 | memcpy(&(temp->allow[i].mask.ip), &((*loc)->allow[i].mask.ip), |
1556 | sizeof(cupsd_ipmask_t)); | |
1557 | break; | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | if ((temp->num_deny = (*loc)->num_deny) > 0) | |
1562 | { | |
1563 | /* | |
1564 | * Copy deny rules... | |
1565 | */ | |
1566 | ||
1567 | if ((temp->deny = calloc(temp->num_deny, sizeof(cupsd_authmask_t))) == NULL) | |
1568 | { | |
1569 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1570 | "cupsdCopyLocation: Unable to allocate memory for %d deny rules: %s", | |
1571 | temp->num_deny, strerror(errno)); | |
bd7854cb | 1572 | cupsdDeleteLocation(temp); |
ef416fc2 | 1573 | return (NULL); |
1574 | } | |
1575 | ||
1576 | for (i = 0; i < temp->num_deny; i ++) | |
1577 | switch (temp->deny[i].type = (*loc)->deny[i].type) | |
1578 | { | |
5bd77a73 | 1579 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1580 | temp->deny[i].mask.name.length = (*loc)->deny[i].mask.name.length; |
1581 | temp->deny[i].mask.name.name = strdup((*loc)->deny[i].mask.name.name); | |
1582 | ||
1583 | if (temp->deny[i].mask.name.name == NULL) | |
1584 | { | |
1585 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1586 | "cupsdCopyLocation: Unable to copy deny name \"%s\": %s", | |
1587 | (*loc)->deny[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1588 | cupsdDeleteLocation(temp); |
ef416fc2 | 1589 | return (NULL); |
1590 | } | |
1591 | break; | |
5bd77a73 | 1592 | case CUPSD_AUTH_IP : |
ef416fc2 | 1593 | memcpy(&(temp->deny[i].mask.ip), &((*loc)->deny[i].mask.ip), |
1594 | sizeof(cupsd_ipmask_t)); | |
1595 | break; | |
1596 | } | |
1597 | } | |
1598 | ||
1599 | return (temp); | |
1600 | } | |
1601 | ||
1602 | ||
1603 | /* | |
1604 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1605 | */ | |
1606 | ||
1607 | void | |
1608 | cupsdDeleteAllLocations(void) | |
1609 | { | |
ef416fc2 | 1610 | cupsd_location_t *loc; /* Current location */ |
1611 | ||
1612 | ||
1613 | /* | |
1614 | * Free all of the allow/deny records first... | |
1615 | */ | |
1616 | ||
bd7854cb | 1617 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1618 | loc; | |
1619 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1620 | cupsdDeleteLocation(loc); |
1621 | ||
1622 | /* | |
1623 | * Then free the location array... | |
1624 | */ | |
1625 | ||
bd7854cb | 1626 | cupsArrayDelete(Locations); |
1627 | Locations = NULL; | |
ef416fc2 | 1628 | } |
1629 | ||
1630 | ||
1631 | /* | |
1632 | * 'cupsdDeleteLocation()' - Free all memory used by a location. | |
1633 | */ | |
1634 | ||
1635 | void | |
1636 | cupsdDeleteLocation( | |
1637 | cupsd_location_t *loc) /* I - Location to delete */ | |
1638 | { | |
1639 | int i; /* Looping var */ | |
1640 | cupsd_authmask_t *mask; /* Current mask */ | |
1641 | ||
1642 | ||
bd7854cb | 1643 | cupsArrayRemove(Locations, loc); |
1644 | ||
ef416fc2 | 1645 | for (i = loc->num_names - 1; i >= 0; i --) |
1646 | free(loc->names[i]); | |
1647 | ||
1648 | if (loc->num_names > 0) | |
1649 | free(loc->names); | |
1650 | ||
1651 | for (i = loc->num_allow, mask = loc->allow; i > 0; i --, mask ++) | |
5bd77a73 | 1652 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) |
ef416fc2 | 1653 | free(mask->mask.name.name); |
1654 | ||
1655 | if (loc->num_allow > 0) | |
1656 | free(loc->allow); | |
1657 | ||
1658 | for (i = loc->num_deny, mask = loc->deny; i > 0; i --, mask ++) | |
5bd77a73 | 1659 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) |
ef416fc2 | 1660 | free(mask->mask.name.name); |
1661 | ||
1662 | if (loc->num_deny > 0) | |
1663 | free(loc->deny); | |
bd7854cb | 1664 | |
1665 | free(loc->location); | |
1666 | free(loc); | |
ef416fc2 | 1667 | } |
1668 | ||
1669 | ||
1670 | /* | |
1671 | * 'cupsdDenyHost()' - Add a host name that is not allowed to access the | |
1672 | * location. | |
1673 | */ | |
1674 | ||
1675 | void | |
1676 | cupsdDenyHost(cupsd_location_t *loc, /* I - Location to add to */ | |
1677 | char *name) /* I - Name of host or domain to add */ | |
1678 | { | |
1679 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1680 | char ifname[32], /* Interface name */ | |
1681 | *ifptr; /* Pointer to end of name */ | |
1682 | ||
1683 | ||
1684 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdDenyHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 1685 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 1686 | |
1687 | if ((temp = add_deny(loc)) == NULL) | |
1688 | return; | |
1689 | ||
bd7854cb | 1690 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 1691 | { |
1692 | /* | |
1693 | * Deny *interface*... | |
1694 | */ | |
1695 | ||
5bd77a73 | 1696 | temp->type = CUPSD_AUTH_INTERFACE; |
ef416fc2 | 1697 | temp->mask.name.name = strdup("*"); |
1698 | temp->mask.name.length = 1; | |
1699 | } | |
bd7854cb | 1700 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 1701 | { |
1702 | /* | |
1703 | * Deny *interface*... | |
1704 | */ | |
1705 | ||
1706 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
1707 | ||
1708 | ifptr = ifname + strlen(ifname); | |
1709 | ||
1710 | if (ifptr[-1] == ')') | |
1711 | { | |
1712 | ifptr --; | |
1713 | *ifptr = '\0'; | |
1714 | } | |
1715 | ||
5bd77a73 | 1716 | temp->type = CUPSD_AUTH_INTERFACE; |
ef416fc2 | 1717 | temp->mask.name.name = strdup(ifname); |
1718 | temp->mask.name.length = ifptr - ifname; | |
1719 | } | |
1720 | else | |
1721 | { | |
1722 | /* | |
1723 | * Deny name... | |
1724 | */ | |
1725 | ||
5bd77a73 | 1726 | temp->type = CUPSD_AUTH_NAME; |
ef416fc2 | 1727 | temp->mask.name.name = strdup(name); |
1728 | temp->mask.name.length = strlen(name); | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | ||
1733 | /* | |
1734 | * 'cupsdDenyIP()' - Add an IP address or network that is not allowed to | |
1735 | * access the location. | |
1736 | */ | |
1737 | ||
1738 | void | |
1739 | cupsdDenyIP(cupsd_location_t *loc, /* I - Location to add to */ | |
ac884b6a MS |
1740 | const unsigned address[4],/* I - IP address to add */ |
1741 | const unsigned netmask[4])/* I - Netmask of address */ | |
ef416fc2 | 1742 | { |
1743 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1744 | ||
1745 | ||
1746 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1747 | "cupsdDenyIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 1748 | loc, loc->location ? loc->location : "nil", |
1749 | address[0], address[1], address[2], address[3], | |
1750 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 1751 | |
1752 | if ((temp = add_deny(loc)) == NULL) | |
1753 | return; | |
1754 | ||
5bd77a73 | 1755 | temp->type = CUPSD_AUTH_IP; |
ef416fc2 | 1756 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); |
1757 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
1758 | } | |
1759 | ||
1760 | ||
1761 | /* | |
1762 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1763 | */ | |
1764 | ||
1765 | cupsd_location_t * /* O - Location that matches */ | |
1766 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1767 | http_state_t state) /* I - HTTP state/request */ | |
1768 | { | |
ef416fc2 | 1769 | char uri[HTTP_MAX_URI], |
1770 | /* URI in request... */ | |
1771 | *uriptr; /* Pointer into URI */ | |
1772 | cupsd_location_t *loc, /* Current location */ | |
1773 | *best; /* Best match for location so far */ | |
1774 | int bestlen; /* Length of best match */ | |
1775 | int limit; /* Limit field */ | |
5bd77a73 | 1776 | static const int limits[] = /* Map http_status_t to CUPSD_AUTH_LIMIT_xyz */ |
ef416fc2 | 1777 | { |
5bd77a73 MS |
1778 | CUPSD_AUTH_LIMIT_ALL, |
1779 | CUPSD_AUTH_LIMIT_OPTIONS, | |
1780 | CUPSD_AUTH_LIMIT_GET, | |
1781 | CUPSD_AUTH_LIMIT_GET, | |
1782 | CUPSD_AUTH_LIMIT_HEAD, | |
1783 | CUPSD_AUTH_LIMIT_POST, | |
1784 | CUPSD_AUTH_LIMIT_POST, | |
1785 | CUPSD_AUTH_LIMIT_POST, | |
1786 | CUPSD_AUTH_LIMIT_PUT, | |
1787 | CUPSD_AUTH_LIMIT_PUT, | |
1788 | CUPSD_AUTH_LIMIT_DELETE, | |
1789 | CUPSD_AUTH_LIMIT_TRACE, | |
1790 | CUPSD_AUTH_LIMIT_ALL, | |
1791 | CUPSD_AUTH_LIMIT_ALL | |
ef416fc2 | 1792 | }; |
1793 | ||
1794 | ||
1795 | /* | |
1796 | * First copy the connection URI to a local string so we have drop | |
1797 | * any .ppd extension from the pathname in /printers or /classes | |
1798 | * URIs... | |
1799 | */ | |
1800 | ||
1801 | strlcpy(uri, path, sizeof(uri)); | |
1802 | ||
1803 | if (!strncmp(uri, "/printers/", 10) || | |
1804 | !strncmp(uri, "/classes/", 9)) | |
1805 | { | |
1806 | /* | |
1807 | * Check if the URI has .ppd on the end... | |
1808 | */ | |
1809 | ||
1810 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1811 | ||
1812 | if (!strcmp(uriptr, ".ppd")) | |
1813 | *uriptr = '\0'; | |
1814 | } | |
1815 | ||
1816 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1817 | ||
1818 | /* | |
1819 | * Loop through the list of locations to find a match... | |
1820 | */ | |
1821 | ||
1822 | limit = limits[state]; | |
1823 | best = NULL; | |
1824 | bestlen = 0; | |
1825 | ||
bd7854cb | 1826 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1827 | loc; | |
1828 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1829 | { |
1830 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1831 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1832 | |
1833 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1834 | { | |
1835 | /* | |
1836 | * Use case-insensitive comparison for queue names... | |
1837 | */ | |
1838 | ||
e1d6a774 | 1839 | if (loc->length > bestlen && loc->location && |
bd7854cb | 1840 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1841 | loc->location[0] == '/' && |
1842 | (limit & loc->limit) != 0) | |
1843 | { | |
1844 | best = loc; | |
1845 | bestlen = loc->length; | |
1846 | } | |
1847 | } | |
1848 | else | |
1849 | { | |
1850 | /* | |
1851 | * Use case-sensitive comparison for other URIs... | |
1852 | */ | |
1853 | ||
e1d6a774 | 1854 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1855 | !strncmp(uri, loc->location, loc->length) && |
1856 | loc->location[0] == '/' && | |
1857 | (limit & loc->limit) != 0) | |
1858 | { | |
1859 | best = loc; | |
1860 | bestlen = loc->length; | |
1861 | } | |
1862 | } | |
1863 | } | |
1864 | ||
1865 | /* | |
1866 | * Return the match, if any... | |
1867 | */ | |
1868 | ||
1869 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1870 | best ? best->location : "NONE"); | |
1871 | ||
1872 | return (best); | |
1873 | } | |
1874 | ||
1875 | ||
1876 | /* | |
1877 | * 'cupsdFindLocation()' - Find the named location. | |
1878 | */ | |
1879 | ||
1880 | cupsd_location_t * /* O - Location that matches */ | |
1881 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1882 | { | |
bd7854cb | 1883 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1884 | |
1885 | ||
bd7854cb | 1886 | key.location = (char *)location; |
ef416fc2 | 1887 | |
bd7854cb | 1888 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1889 | } |
1890 | ||
1891 | ||
ef416fc2 | 1892 | /* |
1893 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1894 | */ | |
1895 | ||
1896 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1897 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1898 | const char *owner)/* I - Owner of object */ | |
1899 | { | |
1900 | int i, j, /* Looping vars */ | |
2fb76298 MS |
1901 | auth, /* Authorization status */ |
1902 | type; /* Type of authentication */ | |
ef416fc2 | 1903 | unsigned address[4]; /* Authorization address */ |
1904 | cupsd_location_t *best; /* Best match for location so far */ | |
1905 | int hostlen; /* Length of hostname */ | |
db1f069b MS |
1906 | char username[256], /* Username to authorize */ |
1907 | ownername[256], /* Owner name to authorize */ | |
1908 | *ptr; /* Pointer into username */ | |
ef416fc2 | 1909 | struct passwd *pw; /* User password data */ |
1910 | static const char * const levels[] = /* Auth levels */ | |
1911 | { | |
1912 | "ANON", | |
1913 | "USER", | |
1914 | "GROUP" | |
1915 | }; | |
1916 | static const char * const types[] = /* Auth types */ | |
1917 | { | |
2fb76298 MS |
1918 | "None", |
1919 | "Basic", | |
1920 | "Digest", | |
1921 | "BasicDigest", | |
1922 | "Negotiate" | |
ef416fc2 | 1923 | }; |
1924 | ||
1925 | ||
1926 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1927 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
f301802f | 1928 | con->uri, con->best, con->best ? con->best->location ? |
1929 | con->best->location : "(null)" : ""); | |
fa73b229 | 1930 | if (owner) |
1931 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1932 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1933 | |
1934 | /* | |
1935 | * If there is no "best" authentication rule for this request, then | |
1936 | * access is allowed from the local system and denied from other | |
1937 | * addresses... | |
1938 | */ | |
1939 | ||
1940 | if (!con->best) | |
1941 | { | |
1942 | if (!strcmp(con->http.hostname, "localhost") || | |
1943 | !strcmp(con->http.hostname, ServerName)) | |
1944 | return (HTTP_OK); | |
1945 | else | |
1946 | return (HTTP_FORBIDDEN); | |
1947 | } | |
1948 | ||
1949 | best = con->best; | |
1950 | ||
5bd77a73 | 1951 | if ((type = best->type) == CUPSD_AUTH_DEFAULT) |
2fb76298 MS |
1952 | type = DefaultAuthType; |
1953 | ||
ef416fc2 | 1954 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
5bd77a73 MS |
1955 | "cupsdIsAuthorized: level=CUPSD_AUTH_%s, type=%s, " |
1956 | "satisfy=CUPSD_AUTH_SATISFY_%s, num_names=%d", | |
2fb76298 | 1957 | levels[best->level], types[type], |
ef416fc2 | 1958 | best->satisfy ? "ANY" : "ALL", best->num_names); |
1959 | ||
5bd77a73 | 1960 | if (best->limit == CUPSD_AUTH_LIMIT_IPP) |
ef416fc2 | 1961 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", |
1962 | best->op, ippOpString(best->op)); | |
1963 | ||
1964 | /* | |
1965 | * Check host/ip-based accesses... | |
1966 | */ | |
1967 | ||
1968 | #ifdef AF_INET6 | |
1969 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1970 | { | |
1971 | /* | |
1972 | * Copy IPv6 address... | |
1973 | */ | |
1974 | ||
1975 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1976 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1977 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1978 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1979 | } | |
1980 | else | |
1981 | #endif /* AF_INET6 */ | |
1982 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
1983 | { | |
1984 | /* | |
1985 | * Copy IPv4 address... | |
1986 | */ | |
1987 | ||
1988 | address[0] = 0; | |
1989 | address[1] = 0; | |
1990 | address[2] = 0; | |
1991 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
1992 | } | |
1993 | else | |
1994 | memset(address, 0, sizeof(address)); | |
1995 | ||
1996 | hostlen = strlen(con->http.hostname); | |
1997 | ||
080811b1 | 1998 | auth = cupsdCheckAccess(address, con->http.hostname, hostlen, best) |
5bd77a73 | 1999 | ? CUPSD_AUTH_ALLOW : CUPSD_AUTH_DENY; |
ef416fc2 | 2000 | |
5bd77a73 | 2001 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=CUPSD_AUTH_%s...", |
ef416fc2 | 2002 | auth ? "DENY" : "ALLOW"); |
2003 | ||
5bd77a73 | 2004 | if (auth == CUPSD_AUTH_DENY && best->satisfy == CUPSD_AUTH_SATISFY_ALL) |
ef416fc2 | 2005 | return (HTTP_FORBIDDEN); |
2006 | ||
2007 | #ifdef HAVE_SSL | |
2008 | /* | |
2009 | * See if encryption is required... | |
2010 | */ | |
2011 | ||
f7deaa1a | 2012 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
a74454a7 | 2013 | strcasecmp(con->http.hostname, "localhost") && |
5bd77a73 MS |
2014 | best->satisfy == CUPSD_AUTH_SATISFY_ALL) && |
2015 | !(type == CUPSD_AUTH_NEGOTIATE || | |
2016 | (type == CUPSD_AUTH_NONE && DefaultAuthType == CUPSD_AUTH_NEGOTIATE))) | |
ef416fc2 | 2017 | { |
355e94dc | 2018 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2019 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
2020 | return (HTTP_UPGRADE_REQUIRED); | |
2021 | } | |
2022 | #endif /* HAVE_SSL */ | |
2023 | ||
2024 | /* | |
2025 | * Now see what access level is required... | |
2026 | */ | |
2027 | ||
5bd77a73 MS |
2028 | if (best->level == CUPSD_AUTH_ANON || /* Anonymous access - allow it */ |
2029 | (type == CUPSD_AUTH_NONE && best->num_names == 0)) | |
ef416fc2 | 2030 | return (HTTP_OK); |
2031 | ||
5bd77a73 MS |
2032 | if (!con->username[0] && type == CUPSD_AUTH_NONE && |
2033 | best->limit == CUPSD_AUTH_LIMIT_IPP) | |
ef416fc2 | 2034 | { |
2035 | /* | |
2036 | * Check for unauthenticated username... | |
2037 | */ | |
2038 | ||
2039 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
2040 | ||
2041 | ||
2042 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
2043 | if (attr) | |
2044 | { | |
355e94dc | 2045 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2046 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
2047 | attr->values[0].string.text); | |
db1f069b | 2048 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 2049 | } |
5bd77a73 | 2050 | else if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
ef416fc2 | 2051 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2052 | else | |
2053 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2054 | } | |
fa73b229 | 2055 | else |
2056 | { | |
355e94dc | 2057 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 2058 | con->username); |
2059 | ||
f7deaa1a | 2060 | #ifdef HAVE_AUTHORIZATION_H |
2061 | if (!con->username[0] && !con->authref) | |
2062 | #else | |
fa73b229 | 2063 | if (!con->username[0]) |
f7deaa1a | 2064 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 2065 | { |
5bd77a73 | 2066 | if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
fa73b229 | 2067 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2068 | else | |
2069 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2070 | } | |
2071 | ||
5bd77a73 MS |
2072 | if (con->type != type && type != CUPSD_AUTH_NONE && |
2073 | (con->type != CUPSD_AUTH_BASIC || type != CUPSD_AUTH_BASICDIGEST)) | |
2fb76298 MS |
2074 | { |
2075 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s!", | |
2076 | types[con->type], types[type]); | |
2077 | ||
2078 | return (HTTP_UNAUTHORIZED); | |
2079 | } | |
2080 | ||
db1f069b | 2081 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 2082 | } |
ef416fc2 | 2083 | |
2084 | /* | |
fa73b229 | 2085 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 2086 | * access... (root always matches) |
2087 | */ | |
2088 | ||
fa73b229 | 2089 | if (!strcmp(username, "root")) |
ef416fc2 | 2090 | return (HTTP_OK); |
2091 | ||
db1f069b MS |
2092 | /* |
2093 | * Strip any @domain or @KDC from the username and owner... | |
2094 | */ | |
2095 | ||
2096 | if ((ptr = strchr(username, '@')) != NULL) | |
2097 | *ptr = '\0'; | |
2098 | ||
2099 | if (owner) | |
2100 | { | |
2101 | strlcpy(ownername, owner, sizeof(ownername)); | |
2102 | ||
2103 | if ((ptr = strchr(ownername, '@')) != NULL) | |
2104 | *ptr = '\0'; | |
2105 | } | |
2106 | else | |
2107 | ownername[0] = '\0'; | |
2108 | ||
ef416fc2 | 2109 | /* |
2110 | * Get the user info... | |
2111 | */ | |
2112 | ||
f7deaa1a | 2113 | if (username[0]) |
2114 | { | |
2115 | pw = getpwnam(username); | |
2116 | endpwent(); | |
2117 | } | |
2118 | else | |
2119 | pw = NULL; | |
ef416fc2 | 2120 | |
5bd77a73 | 2121 | if (best->level == CUPSD_AUTH_USER) |
ef416fc2 | 2122 | { |
2123 | /* | |
2124 | * If there are no names associated with this location, then | |
2125 | * any valid user is OK... | |
2126 | */ | |
2127 | ||
2128 | if (best->num_names == 0) | |
2129 | return (HTTP_OK); | |
2130 | ||
2131 | /* | |
2132 | * Otherwise check the user list and return OK if this user is | |
2133 | * allowed... | |
2134 | */ | |
2135 | ||
2136 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2137 | "cupsdIsAuthorized: Checking user membership..."); | |
2138 | ||
f7deaa1a | 2139 | #ifdef HAVE_AUTHORIZATION_H |
2140 | /* | |
2141 | * If an authorization reference was supplied it must match a right name... | |
2142 | */ | |
2143 | ||
2144 | if (con->authref) | |
2145 | { | |
2146 | for (i = 0; i < best->num_names; i ++) | |
2147 | { | |
2148 | if (!strncasecmp(best->names[i], "@AUTHKEY(", 9) && | |
2149 | check_authref(con, best->names[i] + 9)) | |
2150 | return (HTTP_OK); | |
2151 | else if (!strcasecmp(best->names[i], "@SYSTEM") && | |
2152 | SystemGroupAuthKey && | |
2153 | check_authref(con, SystemGroupAuthKey)) | |
2154 | return (HTTP_OK); | |
2155 | } | |
2156 | ||
2157 | return (HTTP_UNAUTHORIZED); | |
2158 | } | |
2159 | #endif /* HAVE_AUTHORIZATION_H */ | |
2160 | ||
ef416fc2 | 2161 | for (i = 0; i < best->num_names; i ++) |
2162 | { | |
2163 | if (!strcasecmp(best->names[i], "@OWNER") && owner && | |
db1f069b | 2164 | !strcasecmp(username, ownername)) |
ef416fc2 | 2165 | return (HTTP_OK); |
2166 | else if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2167 | { | |
2168 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2169 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2170 | return (HTTP_OK); |
2171 | } | |
2172 | else if (best->names[i][0] == '@') | |
2173 | { | |
fa73b229 | 2174 | if (cupsdCheckGroup(username, pw, best->names[i] + 1)) |
ef416fc2 | 2175 | return (HTTP_OK); |
2176 | } | |
fa73b229 | 2177 | else if (!strcasecmp(username, best->names[i])) |
ef416fc2 | 2178 | return (HTTP_OK); |
2179 | } | |
2180 | ||
2181 | return (HTTP_UNAUTHORIZED); | |
2182 | } | |
2183 | ||
2184 | /* | |
2185 | * Check to see if this user is in any of the named groups... | |
2186 | */ | |
2187 | ||
2188 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2189 | "cupsdIsAuthorized: Checking group membership..."); | |
2190 | ||
2191 | /* | |
2192 | * Check to see if this user is in any of the named groups... | |
2193 | */ | |
2194 | ||
2195 | for (i = 0; i < best->num_names; i ++) | |
2196 | { | |
2197 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2198 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
2199 | best->names[i]); | |
2200 | ||
2201 | if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2202 | { | |
2203 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2204 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2205 | return (HTTP_OK); |
2206 | } | |
fa73b229 | 2207 | else if (cupsdCheckGroup(username, pw, best->names[i])) |
ef416fc2 | 2208 | return (HTTP_OK); |
2209 | } | |
2210 | ||
2211 | /* | |
2212 | * The user isn't part of the specified group, so deny access... | |
2213 | */ | |
2214 | ||
355e94dc | 2215 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2216 | "cupsdIsAuthorized: User not in group(s)!"); |
2217 | ||
2218 | return (HTTP_UNAUTHORIZED); | |
2219 | } | |
2220 | ||
2221 | ||
2222 | /* | |
2223 | * 'add_allow()' - Add an allow mask to the location. | |
2224 | */ | |
2225 | ||
2226 | static cupsd_authmask_t * /* O - New mask record */ | |
2227 | add_allow(cupsd_location_t *loc) /* I - Location to add to */ | |
2228 | { | |
2229 | cupsd_authmask_t *temp; /* New mask record */ | |
2230 | ||
2231 | ||
2232 | /* | |
2233 | * Range-check... | |
2234 | */ | |
2235 | ||
2236 | if (loc == NULL) | |
2237 | return (NULL); | |
2238 | ||
2239 | /* | |
2240 | * Try to allocate memory for the record... | |
2241 | */ | |
2242 | ||
2243 | if (loc->num_allow == 0) | |
2244 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2245 | else | |
2246 | temp = realloc(loc->allow, sizeof(cupsd_authmask_t) * (loc->num_allow + 1)); | |
2247 | ||
2248 | if (temp == NULL) | |
2249 | return (NULL); | |
2250 | ||
2251 | loc->allow = temp; | |
2252 | temp += loc->num_allow; | |
2253 | loc->num_allow ++; | |
2254 | ||
2255 | /* | |
2256 | * Clear the mask record and return... | |
2257 | */ | |
2258 | ||
2259 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2260 | return (temp); | |
2261 | } | |
2262 | ||
2263 | ||
2264 | /* | |
2265 | * 'add_deny()' - Add a deny mask to the location. | |
2266 | */ | |
2267 | ||
2268 | static cupsd_authmask_t * /* O - New mask record */ | |
2269 | add_deny(cupsd_location_t *loc) /* I - Location to add to */ | |
2270 | { | |
2271 | cupsd_authmask_t *temp; /* New mask record */ | |
2272 | ||
2273 | ||
2274 | /* | |
2275 | * Range-check... | |
2276 | */ | |
2277 | ||
2278 | if (loc == NULL) | |
2279 | return (NULL); | |
2280 | ||
2281 | /* | |
2282 | * Try to allocate memory for the record... | |
2283 | */ | |
2284 | ||
2285 | if (loc->num_deny == 0) | |
2286 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2287 | else | |
2288 | temp = realloc(loc->deny, sizeof(cupsd_authmask_t) * (loc->num_deny + 1)); | |
2289 | ||
2290 | if (temp == NULL) | |
2291 | return (NULL); | |
2292 | ||
2293 | loc->deny = temp; | |
2294 | temp += loc->num_deny; | |
2295 | loc->num_deny ++; | |
2296 | ||
2297 | /* | |
2298 | * Clear the mask record and return... | |
2299 | */ | |
2300 | ||
2301 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2302 | return (temp); | |
2303 | } | |
2304 | ||
2305 | ||
f7deaa1a | 2306 | #ifdef HAVE_AUTHORIZATION_H |
2307 | /* | |
2308 | * 'check_authref()' - Check if an authorization services reference has the | |
2309 | * supplied right. | |
2310 | */ | |
2311 | ||
2312 | static int /* O - 1 if right is valid, 0 otherwise */ | |
2313 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
2314 | const char *right) /* I - Right name */ | |
2315 | { | |
2316 | OSStatus status; /* OS Status */ | |
2317 | AuthorizationItem authright; /* Authorization right */ | |
2318 | AuthorizationRights authrights; /* Authorization rights */ | |
2319 | AuthorizationFlags authflags; /* Authorization flags */ | |
2320 | ||
2321 | ||
2322 | /* | |
2323 | * Check to see if the user is allowed to perform the task... | |
2324 | */ | |
2325 | ||
2326 | if (!con->authref) | |
2327 | return (0); | |
2328 | ||
2329 | authright.name = right; | |
2330 | authright.valueLength = 0; | |
2331 | authright.value = NULL; | |
2332 | authright.flags = 0; | |
2333 | ||
2334 | authrights.count = 1; | |
2335 | authrights.items = &authright; | |
2336 | ||
2337 | authflags = kAuthorizationFlagDefaults | | |
2338 | kAuthorizationFlagExtendRights; | |
2339 | ||
2340 | if ((status = AuthorizationCopyRights(con->authref, &authrights, | |
2341 | kAuthorizationEmptyEnvironment, | |
2342 | authflags, NULL)) != 0) | |
2343 | { | |
2344 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2345 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2346 | authright.name, (int)status, cssmErrorString(status)); | |
2347 | return (0); | |
2348 | } | |
2349 | ||
2350 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2351 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2352 | authright.name); | |
2353 | ||
2354 | return (1); | |
2355 | } | |
2356 | #endif /* HAVE_AUTHORIZATION_H */ | |
2357 | ||
2358 | ||
bd7854cb | 2359 | /* |
2360 | * 'compare_locations()' - Compare two locations. | |
2361 | */ | |
2362 | ||
2363 | static int /* O - Result of comparison */ | |
2364 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2365 | cupsd_location_t *b) /* I - Second location */ | |
2366 | { | |
2367 | return (strcmp(b->location, a->location)); | |
2368 | } | |
2369 | ||
2370 | ||
d09495fa | 2371 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 2372 | /* |
2373 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2374 | * as needed. | |
2375 | */ | |
2376 | ||
2377 | static char * /* O - Encrypted password */ | |
2378 | cups_crypt(const char *pw, /* I - Password string */ | |
2379 | const char *salt) /* I - Salt (key) string */ | |
2380 | { | |
bd7854cb | 2381 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2382 | { |
2383 | /* | |
2384 | * Use MD5 passwords without the benefit of PAM; this is for | |
2385 | * Slackware Linux, and the algorithm was taken from the | |
2386 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2387 | */ | |
2388 | ||
2389 | int i; /* Looping var */ | |
2390 | unsigned long n; /* Output number */ | |
2391 | int pwlen; /* Length of password string */ | |
2392 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2393 | char *ptr; /* Pointer into result string */ | |
2394 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2395 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2396 | unsigned char digest[16]; /* MD5 digest result */ | |
2397 | static char result[120]; /* Final password string */ | |
2398 | ||
2399 | ||
2400 | /* | |
2401 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2402 | * Get a maximum of 8 characters of salt data after $1$... | |
2403 | */ | |
2404 | ||
2405 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2406 | if (*salt_end == '$') | |
2407 | break; | |
2408 | ||
2409 | /* | |
2410 | * Compute the MD5 sum we need... | |
2411 | */ | |
2412 | ||
2413 | pwlen = strlen(pw); | |
2414 | ||
757d2cad | 2415 | _cupsMD5Init(&state); |
2416 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2417 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2418 | |
757d2cad | 2419 | _cupsMD5Init(&state2); |
2420 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2421 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2422 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2423 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2424 | |
2425 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2426 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2427 | |
2428 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2429 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2430 | |
757d2cad | 2431 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2432 | |
2433 | for (i = 0; i < 1000; i ++) | |
2434 | { | |
757d2cad | 2435 | _cupsMD5Init(&state); |
ef416fc2 | 2436 | |
2437 | if (i & 1) | |
757d2cad | 2438 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2439 | else |
757d2cad | 2440 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2441 | |
2442 | if (i % 3) | |
757d2cad | 2443 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2444 | |
2445 | if (i % 7) | |
757d2cad | 2446 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2447 | |
2448 | if (i & 1) | |
757d2cad | 2449 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2450 | else |
757d2cad | 2451 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2452 | |
757d2cad | 2453 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2454 | } |
2455 | ||
2456 | /* | |
2457 | * Copy the final sum to the result string and return... | |
2458 | */ | |
2459 | ||
2460 | memcpy(result, salt, salt_end - salt); | |
2461 | ptr = result + (salt_end - salt); | |
2462 | *ptr++ = '$'; | |
2463 | ||
2464 | for (i = 0; i < 5; i ++, ptr += 4) | |
2465 | { | |
2466 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2467 | ||
2468 | if (i < 4) | |
2469 | n |= digest[i + 12]; | |
2470 | else | |
2471 | n |= digest[5]; | |
2472 | ||
2473 | to64(ptr, n, 4); | |
2474 | } | |
2475 | ||
2476 | to64(ptr, digest[11], 2); | |
2477 | ptr += 2; | |
2478 | *ptr = '\0'; | |
2479 | ||
2480 | return (result); | |
2481 | } | |
2482 | else | |
2483 | { | |
2484 | /* | |
2485 | * Use the standard crypt() function... | |
2486 | */ | |
2487 | ||
2488 | return (crypt(pw, salt)); | |
2489 | } | |
2490 | } | |
d09495fa | 2491 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
ef416fc2 | 2492 | |
2493 | ||
f7deaa1a | 2494 | #ifdef HAVE_GSSAPI |
2495 | /* | |
2496 | * 'get_gss_creds()' - Obtain GSS credentials. | |
2497 | */ | |
2498 | ||
2499 | static gss_cred_id_t /* O - Server credentials */ | |
3dfe78b3 MS |
2500 | get_gss_creds( |
2501 | const char *service_name, /* I - Service name */ | |
2502 | const char *con_server_name) /* I - Hostname of server */ | |
f7deaa1a | 2503 | { |
2504 | OM_uint32 major_status, /* Major status code */ | |
2505 | minor_status; /* Minor status code */ | |
2506 | gss_name_t server_name; /* Server name */ | |
2507 | gss_cred_id_t server_creds; /* Server credentials */ | |
2508 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
2509 | /* Service name token */ | |
3dfe78b3 | 2510 | char buf[1024]; /* Service name buffer */ |
f7deaa1a | 2511 | |
2512 | ||
3dfe78b3 | 2513 | snprintf(buf, sizeof(buf), "%s@%s", service_name, con_server_name); |
f7deaa1a | 2514 | |
2515 | token.value = buf; | |
2516 | token.length = strlen(buf); | |
2517 | server_name = GSS_C_NO_NAME; | |
2518 | major_status = gss_import_name(&minor_status, &token, | |
2519 | GSS_C_NT_HOSTBASED_SERVICE, | |
2520 | &server_name); | |
2521 | ||
2522 | memset(&token, 0, sizeof(token)); | |
2523 | ||
2524 | if (GSS_ERROR(major_status)) | |
2525 | { | |
2526 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2527 | "gss_import_name() failed"); | |
2528 | return (NULL); | |
2529 | } | |
2530 | ||
2531 | major_status = gss_display_name(&minor_status, server_name, &token, NULL); | |
2532 | ||
2533 | if (GSS_ERROR(major_status)) | |
2534 | { | |
2535 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2536 | "gss_display_name() failed"); | |
2537 | return (NULL); | |
2538 | } | |
2539 | ||
c24d2134 MS |
2540 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2541 | "get_gss_creds: Attempting to acquire credentials for %s...", | |
f7deaa1a | 2542 | (char *)token.value); |
2543 | ||
2544 | server_creds = GSS_C_NO_CREDENTIAL; | |
2545 | major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE, | |
2546 | GSS_C_NO_OID_SET, GSS_C_ACCEPT, | |
2547 | &server_creds, NULL, NULL); | |
2548 | if (GSS_ERROR(major_status)) | |
2549 | { | |
2550 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2551 | "gss_acquire_cred() failed"); | |
2552 | gss_release_name(&minor_status, &server_name); | |
2553 | gss_release_buffer(&minor_status, &token); | |
2554 | return (NULL); | |
2555 | } | |
2556 | ||
c24d2134 MS |
2557 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2558 | "get_gss_creds: Credentials acquired successfully for %s.", | |
f7deaa1a | 2559 | (char *)token.value); |
2560 | ||
2561 | gss_release_name(&minor_status, &server_name); | |
2562 | gss_release_buffer(&minor_status, &token); | |
2563 | ||
2564 | return (server_creds); | |
2565 | } | |
2566 | #endif /* HAVE_GSSAPI */ | |
2567 | ||
2568 | ||
e1d6a774 | 2569 | /* |
2570 | * 'get_md5_password()' - Get an MD5 password. | |
2571 | */ | |
2572 | ||
2573 | static char * /* O - MD5 password string */ | |
2574 | get_md5_password(const char *username, /* I - Username */ | |
2575 | const char *group, /* I - Group */ | |
2576 | char passwd[33]) /* O - MD5 password string */ | |
2577 | { | |
2578 | cups_file_t *fp; /* passwd.md5 file */ | |
2579 | char filename[1024], /* passwd.md5 filename */ | |
2580 | line[256], /* Line from file */ | |
2581 | tempuser[33], /* User from file */ | |
2582 | tempgroup[33]; /* Group from file */ | |
2583 | ||
2584 | ||
2585 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2586 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2587 | username, group ? group : "(null)", passwd); | |
2588 | ||
2589 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2590 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2591 | { | |
2592 | if (errno != ENOENT) | |
2593 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2594 | strerror(errno)); | |
2595 | ||
2596 | return (NULL); | |
2597 | } | |
2598 | ||
2599 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2600 | { | |
2601 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2602 | { | |
2603 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2604 | continue; | |
2605 | } | |
2606 | ||
2607 | if (!strcmp(username, tempuser) && | |
2608 | (group == NULL || !strcmp(group, tempgroup))) | |
2609 | { | |
2610 | /* | |
2611 | * Found the password entry! | |
2612 | */ | |
2613 | ||
2614 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2615 | username, tempgroup); | |
2616 | ||
2617 | cupsFileClose(fp); | |
2618 | return (passwd); | |
2619 | } | |
2620 | } | |
2621 | ||
2622 | /* | |
2623 | * Didn't find a password entry - return NULL! | |
2624 | */ | |
2625 | ||
2626 | cupsFileClose(fp); | |
2627 | return (NULL); | |
2628 | } | |
2629 | ||
2630 | ||
ef416fc2 | 2631 | #if HAVE_LIBPAM |
2632 | /* | |
2633 | * 'pam_func()' - PAM conversation function. | |
2634 | */ | |
2635 | ||
2636 | static int /* O - Success or failure */ | |
2637 | pam_func( | |
2638 | int num_msg, /* I - Number of messages */ | |
2639 | const struct pam_message **msg, /* I - Messages */ | |
2640 | struct pam_response **resp, /* O - Responses */ | |
2641 | void *appdata_ptr) | |
2642 | /* I - Pointer to connection */ | |
2643 | { | |
2644 | int i; /* Looping var */ | |
2645 | struct pam_response *replies; /* Replies */ | |
2646 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2647 | ||
2648 | ||
2649 | /* | |
2650 | * Allocate memory for the responses... | |
2651 | */ | |
2652 | ||
2653 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2654 | return (PAM_CONV_ERR); | |
2655 | ||
2656 | /* | |
2657 | * Answer all of the messages... | |
2658 | */ | |
2659 | ||
2660 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2661 | ||
2662 | #ifdef __hpux | |
2663 | /* | |
2664 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2665 | * module. This is a workaround... | |
2666 | */ | |
2667 | ||
2668 | data = auth_data; | |
2669 | (void)appdata_ptr; | |
2670 | #else | |
2671 | data = (cupsd_authdata_t *)appdata_ptr; | |
2672 | #endif /* __hpux */ | |
2673 | ||
2674 | for (i = 0; i < num_msg; i ++) | |
2675 | { | |
2676 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2677 | ||
2678 | switch (msg[i]->msg_style) | |
2679 | { | |
2680 | case PAM_PROMPT_ECHO_ON: | |
2681 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2682 | data->username)); | |
2683 | replies[i].resp_retcode = PAM_SUCCESS; | |
2684 | replies[i].resp = strdup(data->username); | |
2685 | break; | |
2686 | ||
2687 | case PAM_PROMPT_ECHO_OFF: | |
2688 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2689 | data->password)); | |
2690 | replies[i].resp_retcode = PAM_SUCCESS; | |
2691 | replies[i].resp = strdup(data->password); | |
2692 | break; | |
2693 | ||
2694 | case PAM_TEXT_INFO: | |
2695 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2696 | replies[i].resp_retcode = PAM_SUCCESS; | |
2697 | replies[i].resp = NULL; | |
2698 | break; | |
2699 | ||
2700 | case PAM_ERROR_MSG: | |
2701 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2702 | replies[i].resp_retcode = PAM_SUCCESS; | |
2703 | replies[i].resp = NULL; | |
2704 | break; | |
2705 | ||
2706 | default: | |
2707 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2708 | msg[i]->msg_style)); | |
2709 | free(replies); | |
2710 | return (PAM_CONV_ERR); | |
2711 | } | |
2712 | } | |
2713 | ||
2714 | /* | |
2715 | * Return the responses back to PAM... | |
2716 | */ | |
2717 | ||
2718 | *resp = replies; | |
2719 | ||
2720 | return (PAM_SUCCESS); | |
2721 | } | |
f7deaa1a | 2722 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 2723 | |
2724 | ||
2725 | /* | |
2726 | * 'to64()' - Base64-encode an integer value... | |
2727 | */ | |
2728 | ||
2729 | static void | |
2730 | to64(char *s, /* O - Output string */ | |
2731 | unsigned long v, /* I - Value to encode */ | |
2732 | int n) /* I - Number of digits */ | |
2733 | { | |
2734 | const char *itoa64 = "./0123456789" | |
2735 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2736 | "abcdefghijklmnopqrstuvwxyz"; | |
2737 | ||
2738 | ||
2739 | for (; n > 0; n --, v >>= 6) | |
2740 | *s++ = itoa64[v & 0x3f]; | |
2741 | } | |
2742 | #endif /* HAVE_LIBPAM */ | |
2743 | ||
2744 | ||
2745 | /* | |
2e4ff8af | 2746 | * End of "$Id: auth.c 6947 2007-09-12 21:09:49Z mike $". |
ef416fc2 | 2747 | */ |