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b423cd4c | 1 | /* |
b19ccc9e | 2 | * "$Id: auth.c 7830 2008-08-04 20:38:50Z mike $" |
ef416fc2 | 3 | * |
4 | * Authorization routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
bf3816c7 | 6 | * Copyright 2007-2009 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 | ||
ed6e7faf MS |
457 | strlcpy(username, "_AUTHREF_", sizeof(username)); |
458 | ||
bf3816c7 MS |
459 | if (!AuthorizationCopyInfo(con->authref, kAuthorizationEnvironmentUsername, |
460 | &authinfo)) | |
e4572d57 | 461 | { |
ed6e7faf MS |
462 | if (authinfo->count == 1 && authinfo->items[0].value && |
463 | authinfo->items[0].valueLength >= 2) | |
464 | strlcpy(username, authinfo->items[0].value, sizeof(username)); | |
465 | ||
e4572d57 | 466 | AuthorizationFreeItemSet(authinfo); |
e4572d57 | 467 | } |
355e94dc | 468 | |
e4572d57 MS |
469 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
470 | "cupsdAuthorize: Authorized as \"%s\" using AuthRef", | |
471 | username); | |
5bd77a73 | 472 | con->type = CUPSD_AUTH_BASIC; |
f7deaa1a | 473 | } |
474 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 475 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
476 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
477 | con->http.hostaddr->addr.sa_family == AF_LOCAL) | |
478 | { | |
479 | /* | |
480 | * Use peer credentials from domain socket connection... | |
481 | */ | |
482 | ||
483 | struct passwd *pwd; /* Password entry for this user */ | |
484 | cupsd_ucred_t peercred; /* Peer credentials */ | |
485 | socklen_t peersize; /* Size of peer credentials */ | |
486 | ||
487 | ||
488 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
489 | { | |
490 | cupsdLogMessage(CUPSD_LOG_ERROR, "User \"%s\" does not exist!", | |
491 | authorization + 9); | |
492 | return; | |
493 | } | |
494 | ||
495 | peersize = sizeof(peercred); | |
496 | ||
497 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) | |
498 | { | |
499 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
500 | strerror(errno)); | |
501 | return; | |
502 | } | |
503 | ||
504 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
505 | { | |
506 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
507 | "Invalid peer credentials for \"%s\" - got %d, " | |
508 | "expected %d!", authorization + 9, | |
509 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); | |
510 | # ifdef HAVE_SYS_UCRED_H | |
511 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_version=%d", | |
512 | peercred.cr_version); | |
513 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_uid=%d", | |
514 | peercred.cr_uid); | |
515 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_ngroups=%d", | |
516 | peercred.cr_ngroups); | |
517 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_groups[0]=%d", | |
518 | peercred.cr_groups[0]); | |
519 | # endif /* HAVE_SYS_UCRED_H */ | |
520 | return; | |
521 | } | |
522 | ||
523 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc MS |
524 | |
525 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
526 | "cupsdAuthorize: Authorized as %s using PeerCred", | |
527 | username); | |
2fb76298 | 528 | |
5bd77a73 | 529 | con->type = CUPSD_AUTH_BASIC; |
bc44d920 | 530 | } |
531 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 532 | else if (!strncmp(authorization, "Local", 5) && |
533 | !strcasecmp(con->http.hostname, "localhost")) | |
534 | { | |
535 | /* | |
536 | * Get Local certificate authentication data... | |
537 | */ | |
538 | ||
539 | authorization += 5; | |
80ca4592 | 540 | while (isspace(*authorization & 255)) |
ef416fc2 | 541 | authorization ++; |
542 | ||
543 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
355e94dc | 544 | { |
db0bd74a | 545 | strlcpy(username, localuser->username, sizeof(username)); |
355e94dc MS |
546 | |
547 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
548 | "cupsdAuthorize: Authorized as %s using Local", | |
549 | username); | |
550 | } | |
ef416fc2 | 551 | else |
552 | { | |
553 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
554 | "cupsdAuthorize: Local authentication certificate not " | |
555 | "found!"); | |
556 | return; | |
557 | } | |
2fb76298 | 558 | |
db0bd74a MS |
559 | #ifdef HAVE_GSSAPI |
560 | if (localuser->ccache) | |
561 | con->type = CUPSD_AUTH_NEGOTIATE; | |
562 | else | |
563 | #endif /* HAVE_GSSAPI */ | |
564 | con->type = CUPSD_AUTH_BASIC; | |
ef416fc2 | 565 | } |
2fb76298 | 566 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 567 | { |
568 | /* | |
569 | * Get the Basic authentication data... | |
570 | */ | |
571 | ||
572 | int userlen; /* Username:password length */ | |
573 | ||
574 | ||
575 | authorization += 5; | |
80ca4592 | 576 | while (isspace(*authorization & 255)) |
ef416fc2 | 577 | authorization ++; |
578 | ||
579 | userlen = sizeof(username); | |
580 | httpDecode64_2(username, &userlen, authorization); | |
581 | ||
582 | /* | |
583 | * Pull the username and password out... | |
584 | */ | |
585 | ||
586 | if ((ptr = strchr(username, ':')) == NULL) | |
587 | { | |
588 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
589 | "cupsdAuthorize: Missing Basic password!"); | |
590 | return; | |
591 | } | |
592 | ||
593 | *ptr++ = '\0'; | |
594 | ||
595 | if (!username[0]) | |
596 | { | |
597 | /* | |
598 | * Username must not be empty... | |
599 | */ | |
600 | ||
601 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
602 | "cupsdAuthorize: Empty Basic username!"); | |
603 | return; | |
604 | } | |
605 | ||
606 | if (!*ptr) | |
607 | { | |
608 | /* | |
609 | * Password must not be empty... | |
610 | */ | |
611 | ||
612 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
613 | "cupsdAuthorize: Empty Basic password!"); | |
614 | return; | |
615 | } | |
616 | ||
617 | strlcpy(password, ptr, sizeof(password)); | |
618 | ||
619 | /* | |
620 | * Validate the username and password... | |
621 | */ | |
622 | ||
623 | switch (type) | |
624 | { | |
2fb76298 | 625 | default : |
5bd77a73 | 626 | case CUPSD_AUTH_BASIC : |
ef416fc2 | 627 | { |
628 | #if HAVE_LIBPAM | |
629 | /* | |
630 | * Only use PAM to do authentication. This supports MD5 | |
631 | * passwords, among other things... | |
632 | */ | |
633 | ||
634 | pam_handle_t *pamh; /* PAM authentication handle */ | |
635 | int pamerr; /* PAM error code */ | |
636 | struct pam_conv pamdata;/* PAM conversation data */ | |
637 | cupsd_authdata_t data; /* Authentication data */ | |
638 | ||
639 | ||
640 | strlcpy(data.username, username, sizeof(data.username)); | |
641 | strlcpy(data.password, password, sizeof(data.password)); | |
642 | ||
07725fee | 643 | # if defined(__sun) || defined(__hpux) |
e1d6a774 | 644 | pamdata.conv = (int (*)(int, struct pam_message **, |
645 | struct pam_response **, | |
646 | void *))pam_func; | |
647 | # else | |
ef416fc2 | 648 | pamdata.conv = pam_func; |
07725fee | 649 | # endif /* __sun || __hpux */ |
ef416fc2 | 650 | pamdata.appdata_ptr = &data; |
651 | ||
652 | # ifdef __hpux | |
653 | /* | |
654 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
655 | * more info... | |
656 | */ | |
657 | ||
658 | auth_data = &data; | |
659 | # endif /* __hpux */ | |
660 | ||
661 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
662 | if (pamerr != PAM_SUCCESS) | |
663 | { | |
664 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
75bd9771 | 665 | "cupsdAuthorize: pam_start() returned %d (%s)!", |
ef416fc2 | 666 | pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 667 | return; |
668 | } | |
669 | ||
ee571f26 MS |
670 | # ifdef HAVE_PAM_SET_ITEM |
671 | # ifdef PAM_RHOST | |
a4924f6c MS |
672 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http.hostname); |
673 | if (pamerr != PAM_SUCCESS) | |
674 | cupsdLogMessage(CUPSD_LOG_WARN, | |
ee571f26 MS |
675 | "cupsdAuthorize: pam_set_item(PAM_RHOST) " |
676 | "returned %d (%s)!", pamerr, | |
677 | pam_strerror(pamh, pamerr)); | |
678 | # endif /* PAM_RHOST */ | |
679 | ||
680 | # ifdef PAM_TTY | |
681 | pamerr = pam_set_item(pamh, PAM_TTY, "cups"); | |
682 | if (pamerr != PAM_SUCCESS) | |
683 | cupsdLogMessage(CUPSD_LOG_WARN, | |
684 | "cupsdAuthorize: pam_set_item(PAM_TTY) " | |
685 | "returned %d (%s)!", pamerr, | |
686 | pam_strerror(pamh, pamerr)); | |
687 | # endif /* PAM_TTY */ | |
688 | # endif /* HAVE_PAM_SET_ITEM */ | |
689 | ||
690 | # ifdef HAVE_PAM_SETCRED | |
691 | pamerr = pam_setcred(pamh, PAM_ESTABLISH_CRED | PAM_SILENT); | |
692 | if (pamerr != PAM_SUCCESS) | |
693 | cupsdLogMessage(CUPSD_LOG_WARN, | |
694 | "cupsdAuthorize: pam_setcred() " | |
695 | "returned %d (%s)!", pamerr, | |
696 | pam_strerror(pamh, pamerr)); | |
697 | # endif /* HAVE_PAM_SETCRED */ | |
a4924f6c | 698 | |
ef416fc2 | 699 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
700 | if (pamerr != PAM_SUCCESS) | |
701 | { | |
702 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
703 | "cupsdAuthorize: pam_authenticate() returned %d " | |
75bd9771 | 704 | "(%s)!", |
ef416fc2 | 705 | pamerr, pam_strerror(pamh, pamerr)); |
706 | pam_end(pamh, 0); | |
707 | return; | |
708 | } | |
709 | ||
710 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); | |
711 | if (pamerr != PAM_SUCCESS) | |
712 | { | |
713 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
714 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
75bd9771 | 715 | "(%s)!", |
ef416fc2 | 716 | pamerr, pam_strerror(pamh, pamerr)); |
717 | pam_end(pamh, 0); | |
718 | return; | |
719 | } | |
720 | ||
721 | pam_end(pamh, PAM_SUCCESS); | |
722 | ||
723 | #elif defined(HAVE_USERSEC_H) | |
724 | /* | |
725 | * Use AIX authentication interface... | |
726 | */ | |
727 | ||
728 | char *authmsg; /* Authentication message */ | |
ef416fc2 | 729 | int reenter; /* ??? */ |
730 | ||
731 | ||
732 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
75bd9771 MS |
733 | "cupsdAuthorize: AIX authenticate of username " |
734 | "\"%s\"", username); | |
ef416fc2 | 735 | |
736 | reenter = 1; | |
737 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
738 | { | |
739 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
740 | "cupsdAuthorize: Unable to authenticate username " | |
741 | "\"%s\": %s", | |
742 | username, strerror(errno)); | |
743 | return; | |
744 | } | |
745 | ||
746 | #else | |
747 | /* | |
748 | * Use normal UNIX password file-based authentication... | |
749 | */ | |
750 | ||
751 | char *pass; /* Encrypted password */ | |
752 | struct passwd *pw; /* User password data */ | |
753 | # ifdef HAVE_SHADOW_H | |
754 | struct spwd *spw; /* Shadow password data */ | |
755 | # endif /* HAVE_SHADOW_H */ | |
756 | ||
757 | ||
758 | pw = getpwnam(username); /* Get the current password */ | |
759 | endpwent(); /* Close the password file */ | |
760 | ||
761 | if (!pw) | |
762 | { | |
763 | /* | |
764 | * No such user... | |
765 | */ | |
766 | ||
767 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
768 | "cupsdAuthorize: Unknown username \"%s\"!", | |
769 | username); | |
80ca4592 | 770 | return; |
ef416fc2 | 771 | } |
772 | ||
773 | # ifdef HAVE_SHADOW_H | |
774 | spw = getspnam(username); | |
775 | endspent(); | |
776 | ||
777 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
778 | { | |
779 | /* | |
780 | * Don't allow blank passwords! | |
781 | */ | |
782 | ||
783 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
784 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
785 | "password!", username); | |
786 | return; | |
787 | } | |
788 | ||
789 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
790 | # else | |
791 | if (!pw->pw_passwd[0]) | |
792 | # endif /* HAVE_SHADOW_H */ | |
793 | { | |
794 | /* | |
795 | * Don't allow blank passwords! | |
796 | */ | |
797 | ||
798 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
799 | "cupsdAuthorize: Username \"%s\" has no password!", | |
800 | username); | |
801 | return; | |
802 | } | |
803 | ||
804 | /* | |
805 | * OK, the password isn't blank, so compare with what came from the | |
806 | * client... | |
807 | */ | |
808 | ||
809 | pass = cups_crypt(password, pw->pw_passwd); | |
810 | ||
811 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
812 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
813 | pw->pw_passwd, pass); | |
814 | ||
815 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
816 | { | |
817 | # ifdef HAVE_SHADOW_H | |
818 | if (spw) | |
819 | { | |
820 | pass = cups_crypt(password, spw->sp_pwdp); | |
821 | ||
822 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
823 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
824 | spw->sp_pwdp, pass); | |
825 | ||
826 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
827 | { | |
828 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
829 | "cupsdAuthorize: Authentication failed for " | |
830 | "user \"%s\"!", | |
831 | username); | |
832 | return; | |
833 | } | |
834 | } | |
835 | else | |
836 | # endif /* HAVE_SHADOW_H */ | |
837 | { | |
838 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
839 | "cupsdAuthorize: Authentication failed for " | |
840 | "user \"%s\"!", | |
841 | username); | |
842 | return; | |
843 | } | |
844 | } | |
845 | #endif /* HAVE_LIBPAM */ | |
846 | } | |
355e94dc MS |
847 | |
848 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
849 | "cupsdAuthorize: Authorized as %s using Basic", | |
850 | username); | |
ef416fc2 | 851 | break; |
852 | ||
5bd77a73 | 853 | case CUPSD_AUTH_BASICDIGEST : |
ef416fc2 | 854 | /* |
855 | * Do Basic authentication with the Digest password file... | |
856 | */ | |
857 | ||
e1d6a774 | 858 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 859 | { |
860 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
861 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
862 | username); | |
863 | return; | |
864 | } | |
865 | ||
866 | httpMD5(username, "CUPS", password, basicmd5); | |
867 | ||
868 | if (strcmp(md5, basicmd5)) | |
869 | { | |
870 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
871 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
872 | username); | |
873 | return; | |
874 | } | |
355e94dc MS |
875 | |
876 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
877 | "cupsdAuthorize: Authorized as %s using BasicDigest", | |
878 | username); | |
ef416fc2 | 879 | break; |
880 | } | |
2fb76298 MS |
881 | |
882 | con->type = type; | |
ef416fc2 | 883 | } |
2fb76298 | 884 | else if (!strncmp(authorization, "Digest", 6)) |
ef416fc2 | 885 | { |
886 | /* | |
887 | * Get the username, password, and nonce from the Digest attributes... | |
888 | */ | |
889 | ||
890 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
891 | username, sizeof(username)) || !username[0]) | |
892 | { | |
893 | /* | |
894 | * Username must not be empty... | |
895 | */ | |
896 | ||
897 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
898 | "cupsdAuthorize: Empty or missing Digest username!"); | |
899 | return; | |
900 | } | |
901 | ||
902 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
903 | password, sizeof(password)) || !password[0]) | |
904 | { | |
905 | /* | |
906 | * Password must not be empty... | |
907 | */ | |
908 | ||
909 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
910 | "cupsdAuthorize: Empty or missing Digest password!"); | |
911 | return; | |
912 | } | |
913 | ||
914 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
915 | nonce)) | |
916 | { | |
917 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
918 | "cupsdAuthorize: No nonce value for Digest " | |
919 | "authentication!"); | |
920 | return; | |
921 | } | |
922 | ||
923 | if (strcmp(con->http.hostname, nonce)) | |
924 | { | |
925 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
926 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
927 | "got \"%s\"!", con->http.hostname, nonce); | |
928 | return; | |
929 | } | |
930 | ||
931 | /* | |
932 | * Validate the username and password... | |
933 | */ | |
934 | ||
e1d6a774 | 935 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 936 | { |
937 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
938 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
939 | username); | |
940 | return; | |
941 | } | |
942 | ||
943 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
944 | ||
945 | if (strcmp(md5, password)) | |
946 | { | |
947 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
948 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
949 | username); | |
950 | return; | |
951 | } | |
355e94dc MS |
952 | |
953 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
954 | "cupsdAuthorize: Authorized as %s using Digest", | |
955 | username); | |
2fb76298 | 956 | |
5bd77a73 | 957 | con->type = CUPSD_AUTH_DIGEST; |
ef416fc2 | 958 | } |
f7deaa1a | 959 | #ifdef HAVE_GSSAPI |
db1f069b | 960 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 961 | { |
962 | int len; /* Length of authorization string */ | |
963 | gss_cred_id_t server_creds; /* Server credentials */ | |
964 | gss_ctx_id_t context; /* Authorization context */ | |
965 | OM_uint32 major_status, /* Major status code */ | |
966 | minor_status; /* Minor status code */ | |
967 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
968 | /* Input token from string */ | |
969 | output_token = GSS_C_EMPTY_BUFFER; | |
970 | /* Output token for username */ | |
971 | gss_name_t client_name; /* Client name */ | |
c24d2134 | 972 | unsigned int ret_flags; /* Credential flags */ |
f7deaa1a | 973 | |
974 | ||
f42414bf | 975 | # ifdef __APPLE__ |
976 | /* | |
977 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
978 | * to use it... | |
979 | */ | |
980 | ||
981 | if (gss_init_sec_context == NULL) | |
982 | { | |
983 | cupsdLogMessage(CUPSD_LOG_WARN, | |
984 | "GSSAPI/Kerberos authentication failed because the " | |
985 | "Kerberos framework is not present."); | |
986 | return; | |
987 | } | |
988 | # endif /* __APPLE__ */ | |
989 | ||
f7deaa1a | 990 | con->gss_output_token.length = 0; |
991 | ||
992 | /* | |
993 | * Find the start of the Kerberos input token... | |
994 | */ | |
995 | ||
996 | authorization += 9; | |
997 | while (isspace(*authorization & 255)) | |
998 | authorization ++; | |
999 | ||
1000 | if (!*authorization) | |
1001 | { | |
1002 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1003 | "cupsdAuthorize: No authentication data specified."); | |
1004 | return; | |
1005 | } | |
1006 | ||
1007 | /* | |
1008 | * Get the server credentials... | |
1009 | */ | |
1010 | ||
3dfe78b3 | 1011 | if ((server_creds = get_gss_creds(GSSServiceName, con->servername)) == NULL) |
f7deaa1a | 1012 | return; |
f7deaa1a | 1013 | |
1014 | /* | |
1015 | * Decode the authorization string to get the input token... | |
1016 | */ | |
1017 | ||
1018 | len = strlen(authorization); | |
1019 | input_token.value = malloc(len); | |
1020 | input_token.value = httpDecode64_2(input_token.value, &len, | |
1021 | authorization); | |
1022 | input_token.length = len; | |
1023 | ||
1024 | /* | |
1025 | * Accept the input token to get the authorization info... | |
1026 | */ | |
1027 | ||
1028 | context = GSS_C_NO_CONTEXT; | |
1029 | client_name = GSS_C_NO_NAME; | |
1030 | major_status = gss_accept_sec_context(&minor_status, | |
1031 | &context, | |
1032 | server_creds, | |
1033 | &input_token, | |
1034 | GSS_C_NO_CHANNEL_BINDINGS, | |
1035 | &client_name, | |
1036 | NULL, | |
1037 | &con->gss_output_token, | |
c24d2134 | 1038 | &ret_flags, |
f7deaa1a | 1039 | NULL, |
1040 | &con->gss_delegated_cred); | |
1041 | ||
1042 | if (GSS_ERROR(major_status)) | |
1043 | { | |
1044 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1045 | "cupsdAuthorize: Error accepting GSSAPI security " | |
1046 | "context"); | |
1047 | ||
1048 | if (context != GSS_C_NO_CONTEXT) | |
1049 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
76cd9e37 MS |
1050 | |
1051 | gss_release_cred(&minor_status, &server_creds); | |
f7deaa1a | 1052 | return; |
1053 | } | |
1054 | ||
1055 | /* | |
76cd9e37 MS |
1056 | * Release our credentials... |
1057 | */ | |
1058 | ||
1059 | gss_release_cred(&minor_status, &server_creds); | |
1060 | ||
1061 | /* | |
1062 | * Get the username associated with the client's credentials... | |
f7deaa1a | 1063 | */ |
1064 | ||
355e94dc MS |
1065 | if (!con->gss_delegated_cred) |
1066 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1067 | "cupsdAuthorize: No delegated credentials!"); | |
1068 | ||
1069 | if (major_status == GSS_S_CONTINUE_NEEDED) | |
1070 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1071 | "cupsdAuthorize: Credentials not complete"); | |
1072 | else if (major_status == GSS_S_COMPLETE) | |
f7deaa1a | 1073 | { |
1074 | major_status = gss_display_name(&minor_status, client_name, | |
1075 | &output_token, NULL); | |
1076 | ||
1077 | if (GSS_ERROR(major_status)) | |
1078 | { | |
1079 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1080 | "cupsdAuthorize: Error getting username"); | |
1081 | gss_release_name(&minor_status, &client_name); | |
1082 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1083 | return; |
1084 | } | |
1085 | ||
1086 | gss_release_name(&minor_status, &client_name); | |
1087 | strlcpy(username, output_token.value, sizeof(username)); | |
355e94dc MS |
1088 | |
1089 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1090 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1091 | username); | |
f7deaa1a | 1092 | |
1093 | gss_release_buffer(&minor_status, &output_token); | |
1094 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
09a101d6 | 1095 | |
1096 | con->gss_have_creds = 1; | |
2fb76298 | 1097 | |
5bd77a73 | 1098 | con->type = CUPSD_AUTH_NEGOTIATE; |
f7deaa1a | 1099 | } |
1100 | else | |
1101 | gss_release_name(&minor_status, &client_name); | |
1102 | } | |
1103 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 1104 | else |
ef416fc2 | 1105 | { |
355e94dc | 1106 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
1107 | |
1108 | ||
1109 | if (sscanf(authorization, "%255s", scheme) != 1) | |
1110 | strcpy(scheme, "UNKNOWN"); | |
1111 | ||
2fb76298 MS |
1112 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\"", |
1113 | scheme); | |
ef416fc2 | 1114 | return; |
1115 | } | |
1116 | ||
1117 | /* | |
1118 | * If we get here, then we were able to validate the username and | |
1119 | * password - copy the validated username and password to the client | |
1120 | * data and return... | |
1121 | */ | |
1122 | ||
1123 | strlcpy(con->username, username, sizeof(con->username)); | |
1124 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1125 | } |
1126 | ||
1127 | ||
080811b1 MS |
1128 | /* |
1129 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
1130 | * access a location. | |
1131 | */ | |
1132 | ||
1133 | int /* O - 1 if allowed, 0 otherwise */ | |
1134 | cupsdCheckAccess( | |
1135 | unsigned ip[4], /* I - Client address */ | |
1136 | char *name, /* I - Client hostname */ | |
1137 | int namelen, /* I - Length of hostname */ | |
1138 | cupsd_location_t *loc) /* I - Location to check */ | |
1139 | { | |
1140 | int allow; /* 1 if allowed, 0 otherwise */ | |
1141 | ||
1142 | ||
1143 | if (!strcasecmp(name, "localhost")) | |
1144 | { | |
1145 | /* | |
1146 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
1147 | */ | |
1148 | ||
1149 | return (1); | |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | /* | |
1154 | * Do authorization checks on the domain/address... | |
1155 | */ | |
1156 | ||
1157 | switch (loc->order_type) | |
1158 | { | |
1159 | default : | |
1160 | allow = 0; /* anti-compiler-warning-code */ | |
1161 | break; | |
1162 | ||
5bd77a73 | 1163 | case CUPSD_AUTH_ALLOW : /* Order Deny,Allow */ |
080811b1 MS |
1164 | allow = 1; |
1165 | ||
1166 | if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny)) | |
1167 | allow = 0; | |
1168 | ||
1169 | if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow)) | |
1170 | allow = 1; | |
1171 | break; | |
1172 | ||
5bd77a73 | 1173 | case CUPSD_AUTH_DENY : /* Order Allow,Deny */ |
080811b1 MS |
1174 | allow = 0; |
1175 | ||
1176 | if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow)) | |
1177 | allow = 1; | |
1178 | ||
1179 | if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny)) | |
1180 | allow = 0; | |
1181 | break; | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | return (allow); | |
1186 | } | |
1187 | ||
1188 | ||
ef416fc2 | 1189 | /* |
1190 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1191 | */ | |
1192 | ||
1193 | int /* O - 1 if mask matches, 0 otherwise */ | |
1194 | cupsdCheckAuth( | |
1195 | unsigned ip[4], /* I - Client address */ | |
1196 | char *name, /* I - Client hostname */ | |
1197 | int name_len, /* I - Length of hostname */ | |
1198 | int num_masks, /* I - Number of masks */ | |
1199 | cupsd_authmask_t *masks) /* I - Masks */ | |
1200 | { | |
1201 | int i; /* Looping var */ | |
1202 | cupsd_netif_t *iface; /* Network interface */ | |
1203 | unsigned netip4; /* IPv4 network address */ | |
1204 | #ifdef AF_INET6 | |
1205 | unsigned netip6[4]; /* IPv6 network address */ | |
1206 | #endif /* AF_INET6 */ | |
1207 | ||
1208 | while (num_masks > 0) | |
1209 | { | |
1210 | switch (masks->type) | |
1211 | { | |
5bd77a73 | 1212 | case CUPSD_AUTH_INTERFACE : |
ef416fc2 | 1213 | /* |
1214 | * Check for a match with a network interface... | |
1215 | */ | |
1216 | ||
1217 | netip4 = htonl(ip[3]); | |
1218 | ||
1219 | #ifdef AF_INET6 | |
1220 | netip6[0] = htonl(ip[0]); | |
1221 | netip6[1] = htonl(ip[1]); | |
1222 | netip6[2] = htonl(ip[2]); | |
1223 | netip6[3] = htonl(ip[3]); | |
1224 | #endif /* AF_INET6 */ | |
1225 | ||
1226 | if (!strcmp(masks->mask.name.name, "*")) | |
1227 | { | |
1228 | /* | |
1229 | * Check against all local interfaces... | |
1230 | */ | |
1231 | ||
1232 | cupsdNetIFUpdate(); | |
1233 | ||
e00b005a | 1234 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1235 | iface; | |
1236 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1237 | { |
1238 | /* | |
1239 | * Only check local interfaces... | |
1240 | */ | |
1241 | ||
1242 | if (!iface->is_local) | |
1243 | continue; | |
1244 | ||
1245 | if (iface->address.addr.sa_family == AF_INET) | |
1246 | { | |
1247 | /* | |
1248 | * Check IPv4 address... | |
1249 | */ | |
1250 | ||
1251 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1252 | (iface->address.ipv4.sin_addr.s_addr & | |
1253 | iface->mask.ipv4.sin_addr.s_addr)) | |
1254 | return (1); | |
1255 | } | |
1256 | #ifdef AF_INET6 | |
1257 | else | |
1258 | { | |
1259 | /* | |
1260 | * Check IPv6 address... | |
1261 | */ | |
1262 | ||
1263 | for (i = 0; i < 4; i ++) | |
1264 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1265 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1266 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1267 | break; | |
1268 | ||
1269 | if (i == 4) | |
1270 | return (1); | |
1271 | } | |
1272 | #endif /* AF_INET6 */ | |
1273 | } | |
1274 | } | |
1275 | else | |
1276 | { | |
1277 | /* | |
1278 | * Check the named interface... | |
1279 | */ | |
1280 | ||
e00b005a | 1281 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1282 | iface; |
e00b005a | 1283 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1284 | { |
ed486911 | 1285 | if (strcmp(masks->mask.name.name, iface->name)) |
1286 | continue; | |
1287 | ||
ef416fc2 | 1288 | if (iface->address.addr.sa_family == AF_INET) |
1289 | { | |
1290 | /* | |
1291 | * Check IPv4 address... | |
1292 | */ | |
1293 | ||
1294 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1295 | (iface->address.ipv4.sin_addr.s_addr & | |
1296 | iface->mask.ipv4.sin_addr.s_addr)) | |
1297 | return (1); | |
1298 | } | |
1299 | #ifdef AF_INET6 | |
1300 | else | |
1301 | { | |
1302 | /* | |
1303 | * Check IPv6 address... | |
1304 | */ | |
1305 | ||
1306 | for (i = 0; i < 4; i ++) | |
1307 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1308 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1309 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1310 | break; | |
1311 | ||
1312 | if (i == 4) | |
1313 | return (1); | |
1314 | } | |
1315 | #endif /* AF_INET6 */ | |
1316 | } | |
1317 | } | |
1318 | break; | |
1319 | ||
5bd77a73 | 1320 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1321 | /* |
1322 | * Check for exact name match... | |
1323 | */ | |
1324 | ||
1325 | if (!strcasecmp(name, masks->mask.name.name)) | |
1326 | return (1); | |
1327 | ||
1328 | /* | |
1329 | * Check for domain match... | |
1330 | */ | |
1331 | ||
1332 | if (name_len >= masks->mask.name.length && | |
1333 | masks->mask.name.name[0] == '.' && | |
bd7854cb | 1334 | !strcasecmp(name + name_len - masks->mask.name.length, |
1335 | masks->mask.name.name)) | |
ef416fc2 | 1336 | return (1); |
1337 | break; | |
1338 | ||
5bd77a73 | 1339 | case CUPSD_AUTH_IP : |
ef416fc2 | 1340 | /* |
1341 | * Check for IP/network address match... | |
1342 | */ | |
1343 | ||
1344 | for (i = 0; i < 4; i ++) | |
1345 | if ((ip[i] & masks->mask.ip.netmask[i]) != | |
1346 | masks->mask.ip.address[i]) | |
1347 | break; | |
1348 | ||
1349 | if (i == 4) | |
1350 | return (1); | |
1351 | break; | |
1352 | } | |
1353 | ||
1354 | masks ++; | |
1355 | num_masks --; | |
1356 | } | |
1357 | ||
1358 | return (0); | |
1359 | } | |
1360 | ||
1361 | ||
1362 | /* | |
1363 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1364 | */ | |
1365 | ||
1366 | int /* O - 1 if user is a member, 0 otherwise */ | |
1367 | cupsdCheckGroup( | |
1368 | const char *username, /* I - User name */ | |
1369 | struct passwd *user, /* I - System user info */ | |
1370 | const char *groupname) /* I - Group name */ | |
1371 | { | |
8922323b MS |
1372 | int i; /* Looping var */ |
1373 | struct group *group; /* System group info */ | |
1374 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 1375 | #ifdef HAVE_MBR_UID_TO_UUID |
8922323b MS |
1376 | uuid_t useruuid, /* UUID for username */ |
1377 | groupuuid; /* UUID for groupname */ | |
1378 | int is_member; /* True if user is a member of group */ | |
bd7854cb | 1379 | #endif /* HAVE_MBR_UID_TO_UUID */ |
ef416fc2 | 1380 | |
1381 | ||
1382 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1383 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1384 | username, user, groupname); | |
1385 | ||
1386 | /* | |
1387 | * Validate input... | |
1388 | */ | |
1389 | ||
1390 | if (!username || !groupname) | |
1391 | return (0); | |
1392 | ||
1393 | /* | |
1394 | * Check to see if the user is a member of the named group... | |
1395 | */ | |
1396 | ||
1397 | group = getgrnam(groupname); | |
1398 | endgrent(); | |
1399 | ||
1400 | if (group != NULL) | |
1401 | { | |
1402 | /* | |
1403 | * Group exists, check it... | |
1404 | */ | |
1405 | ||
1406 | for (i = 0; group->gr_mem[i]; i ++) | |
1407 | if (!strcasecmp(username, group->gr_mem[i])) | |
1408 | return (1); | |
1409 | } | |
1410 | ||
1411 | /* | |
1412 | * Group doesn't exist or user not in group list, check the group ID | |
1413 | * against the user's group ID... | |
1414 | */ | |
1415 | ||
1416 | if (user && group && group->gr_gid == user->pw_gid) | |
1417 | return (1); | |
1418 | ||
bd7854cb | 1419 | #ifdef HAVE_MBR_UID_TO_UUID |
1420 | /* | |
1421 | * Check group membership through MacOS X membership API... | |
1422 | */ | |
1423 | ||
dd1abb6b | 1424 | if (user && !mbr_uid_to_uuid(user->pw_uid, useruuid)) |
c9fc04c6 | 1425 | { |
8922323b MS |
1426 | if (group) |
1427 | { | |
1428 | /* | |
1429 | * Map group name to UUID and check membership... | |
1430 | */ | |
c9fc04c6 | 1431 | |
8922323b MS |
1432 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) |
1433 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1434 | if (is_member) | |
1435 | return (1); | |
1436 | } | |
1437 | else if (groupname[0] == '#') | |
1438 | { | |
1439 | /* | |
1440 | * Use UUID directly and check for equality (user UUID) and | |
1441 | * membership (group UUID)... | |
1442 | */ | |
1443 | ||
1444 | if (!uuid_parse((char *)groupname + 1, groupuuid)) | |
1445 | { | |
1446 | if (!uuid_compare(useruuid, groupuuid)) | |
c9fc04c6 | 1447 | return (1); |
8922323b MS |
1448 | else if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1449 | if (is_member) | |
1450 | return (1); | |
1451 | } | |
1452 | ||
1453 | return (0); | |
1454 | } | |
1455 | } | |
1456 | else if (groupname[0] == '#') | |
1457 | return (0); | |
bd7854cb | 1458 | #endif /* HAVE_MBR_UID_TO_UUID */ |
1459 | ||
ef416fc2 | 1460 | /* |
1461 | * Username not found, group not found, or user is not part of the | |
1462 | * system group... Check for a user and group in the MD5 password | |
1463 | * file... | |
1464 | */ | |
1465 | ||
e1d6a774 | 1466 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1467 | return (1); |
1468 | ||
1469 | /* | |
1470 | * If we get this far, then the user isn't part of the named group... | |
1471 | */ | |
1472 | ||
1473 | return (0); | |
1474 | } | |
1475 | ||
1476 | ||
1477 | /* | |
1478 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1479 | */ | |
1480 | ||
1481 | cupsd_location_t * /* O - New location */ | |
1482 | cupsdCopyLocation( | |
1483 | cupsd_location_t **loc) /* IO - Original location */ | |
1484 | { | |
1485 | int i; /* Looping var */ | |
ef416fc2 | 1486 | cupsd_location_t *temp; /* New location */ |
1487 | char location[HTTP_MAX_URI]; | |
1488 | /* Location of resource */ | |
1489 | ||
1490 | ||
ef416fc2 | 1491 | /* |
1492 | * Use a local copy of location because cupsdAddLocation may cause | |
1493 | * this memory to be moved... | |
1494 | */ | |
1495 | ||
1496 | strlcpy(location, (*loc)->location, sizeof(location)); | |
1497 | ||
1498 | if ((temp = cupsdAddLocation(location)) == NULL) | |
1499 | return (NULL); | |
1500 | ||
ef416fc2 | 1501 | /* |
1502 | * Copy the information from the original location to the new one. | |
1503 | */ | |
1504 | ||
1505 | temp->limit = (*loc)->limit; | |
1506 | temp->order_type = (*loc)->order_type; | |
1507 | temp->type = (*loc)->type; | |
1508 | temp->level = (*loc)->level; | |
1509 | temp->satisfy = (*loc)->satisfy; | |
1510 | temp->encryption = (*loc)->encryption; | |
1511 | ||
1512 | if ((temp->num_names = (*loc)->num_names) > 0) | |
1513 | { | |
1514 | /* | |
1515 | * Copy the names array... | |
1516 | */ | |
1517 | ||
1518 | if ((temp->names = calloc(temp->num_names, sizeof(char *))) == NULL) | |
1519 | { | |
1520 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1521 | "cupsdCopyLocation: Unable to allocate memory for %d names: %s", | |
1522 | temp->num_names, strerror(errno)); | |
bd7854cb | 1523 | |
1524 | cupsdDeleteLocation(temp); | |
ef416fc2 | 1525 | return (NULL); |
1526 | } | |
1527 | ||
1528 | for (i = 0; i < temp->num_names; i ++) | |
1529 | if ((temp->names[i] = strdup((*loc)->names[i])) == NULL) | |
1530 | { | |
1531 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1532 | "cupsdCopyLocation: Unable to copy name \"%s\": %s", | |
1533 | (*loc)->names[i], strerror(errno)); | |
1534 | ||
bd7854cb | 1535 | cupsdDeleteLocation(temp); |
ef416fc2 | 1536 | return (NULL); |
1537 | } | |
1538 | } | |
1539 | ||
1540 | if ((temp->num_allow = (*loc)->num_allow) > 0) | |
1541 | { | |
1542 | /* | |
1543 | * Copy allow rules... | |
1544 | */ | |
1545 | ||
1546 | if ((temp->allow = calloc(temp->num_allow, sizeof(cupsd_authmask_t))) == NULL) | |
1547 | { | |
1548 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1549 | "cupsdCopyLocation: Unable to allocate memory for %d allow rules: %s", | |
1550 | temp->num_allow, strerror(errno)); | |
bd7854cb | 1551 | cupsdDeleteLocation(temp); |
ef416fc2 | 1552 | return (NULL); |
1553 | } | |
1554 | ||
1555 | for (i = 0; i < temp->num_allow; i ++) | |
1556 | switch (temp->allow[i].type = (*loc)->allow[i].type) | |
1557 | { | |
5bd77a73 | 1558 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1559 | temp->allow[i].mask.name.length = (*loc)->allow[i].mask.name.length; |
1560 | temp->allow[i].mask.name.name = strdup((*loc)->allow[i].mask.name.name); | |
1561 | ||
1562 | if (temp->allow[i].mask.name.name == NULL) | |
1563 | { | |
1564 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1565 | "cupsdCopyLocation: Unable to copy allow name \"%s\": %s", | |
1566 | (*loc)->allow[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1567 | cupsdDeleteLocation(temp); |
ef416fc2 | 1568 | return (NULL); |
1569 | } | |
1570 | break; | |
5bd77a73 | 1571 | case CUPSD_AUTH_IP : |
ef416fc2 | 1572 | memcpy(&(temp->allow[i].mask.ip), &((*loc)->allow[i].mask.ip), |
1573 | sizeof(cupsd_ipmask_t)); | |
1574 | break; | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | if ((temp->num_deny = (*loc)->num_deny) > 0) | |
1579 | { | |
1580 | /* | |
1581 | * Copy deny rules... | |
1582 | */ | |
1583 | ||
1584 | if ((temp->deny = calloc(temp->num_deny, sizeof(cupsd_authmask_t))) == NULL) | |
1585 | { | |
1586 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1587 | "cupsdCopyLocation: Unable to allocate memory for %d deny rules: %s", | |
1588 | temp->num_deny, strerror(errno)); | |
bd7854cb | 1589 | cupsdDeleteLocation(temp); |
ef416fc2 | 1590 | return (NULL); |
1591 | } | |
1592 | ||
1593 | for (i = 0; i < temp->num_deny; i ++) | |
1594 | switch (temp->deny[i].type = (*loc)->deny[i].type) | |
1595 | { | |
5bd77a73 | 1596 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1597 | temp->deny[i].mask.name.length = (*loc)->deny[i].mask.name.length; |
1598 | temp->deny[i].mask.name.name = strdup((*loc)->deny[i].mask.name.name); | |
1599 | ||
1600 | if (temp->deny[i].mask.name.name == NULL) | |
1601 | { | |
1602 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1603 | "cupsdCopyLocation: Unable to copy deny name \"%s\": %s", | |
1604 | (*loc)->deny[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1605 | cupsdDeleteLocation(temp); |
ef416fc2 | 1606 | return (NULL); |
1607 | } | |
1608 | break; | |
5bd77a73 | 1609 | case CUPSD_AUTH_IP : |
ef416fc2 | 1610 | memcpy(&(temp->deny[i].mask.ip), &((*loc)->deny[i].mask.ip), |
1611 | sizeof(cupsd_ipmask_t)); | |
1612 | break; | |
1613 | } | |
1614 | } | |
1615 | ||
1616 | return (temp); | |
1617 | } | |
1618 | ||
1619 | ||
1620 | /* | |
1621 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1622 | */ | |
1623 | ||
1624 | void | |
1625 | cupsdDeleteAllLocations(void) | |
1626 | { | |
ef416fc2 | 1627 | cupsd_location_t *loc; /* Current location */ |
1628 | ||
1629 | ||
1630 | /* | |
1631 | * Free all of the allow/deny records first... | |
1632 | */ | |
1633 | ||
bd7854cb | 1634 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1635 | loc; | |
1636 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1637 | cupsdDeleteLocation(loc); |
1638 | ||
1639 | /* | |
1640 | * Then free the location array... | |
1641 | */ | |
1642 | ||
bd7854cb | 1643 | cupsArrayDelete(Locations); |
1644 | Locations = NULL; | |
ef416fc2 | 1645 | } |
1646 | ||
1647 | ||
1648 | /* | |
1649 | * 'cupsdDeleteLocation()' - Free all memory used by a location. | |
1650 | */ | |
1651 | ||
1652 | void | |
1653 | cupsdDeleteLocation( | |
1654 | cupsd_location_t *loc) /* I - Location to delete */ | |
1655 | { | |
1656 | int i; /* Looping var */ | |
1657 | cupsd_authmask_t *mask; /* Current mask */ | |
1658 | ||
1659 | ||
bd7854cb | 1660 | cupsArrayRemove(Locations, loc); |
1661 | ||
ef416fc2 | 1662 | for (i = loc->num_names - 1; i >= 0; i --) |
1663 | free(loc->names[i]); | |
1664 | ||
1665 | if (loc->num_names > 0) | |
1666 | free(loc->names); | |
1667 | ||
1668 | for (i = loc->num_allow, mask = loc->allow; i > 0; i --, mask ++) | |
5bd77a73 | 1669 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) |
ef416fc2 | 1670 | free(mask->mask.name.name); |
1671 | ||
1672 | if (loc->num_allow > 0) | |
1673 | free(loc->allow); | |
1674 | ||
1675 | for (i = loc->num_deny, mask = loc->deny; i > 0; i --, mask ++) | |
5bd77a73 | 1676 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) |
ef416fc2 | 1677 | free(mask->mask.name.name); |
1678 | ||
1679 | if (loc->num_deny > 0) | |
1680 | free(loc->deny); | |
bd7854cb | 1681 | |
1682 | free(loc->location); | |
1683 | free(loc); | |
ef416fc2 | 1684 | } |
1685 | ||
1686 | ||
1687 | /* | |
1688 | * 'cupsdDenyHost()' - Add a host name that is not allowed to access the | |
1689 | * location. | |
1690 | */ | |
1691 | ||
1692 | void | |
1693 | cupsdDenyHost(cupsd_location_t *loc, /* I - Location to add to */ | |
1694 | char *name) /* I - Name of host or domain to add */ | |
1695 | { | |
1696 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1697 | char ifname[32], /* Interface name */ | |
1698 | *ifptr; /* Pointer to end of name */ | |
1699 | ||
1700 | ||
1701 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdDenyHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 1702 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 1703 | |
1704 | if ((temp = add_deny(loc)) == NULL) | |
1705 | return; | |
1706 | ||
bd7854cb | 1707 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 1708 | { |
1709 | /* | |
1710 | * Deny *interface*... | |
1711 | */ | |
1712 | ||
5bd77a73 | 1713 | temp->type = CUPSD_AUTH_INTERFACE; |
ef416fc2 | 1714 | temp->mask.name.name = strdup("*"); |
1715 | temp->mask.name.length = 1; | |
1716 | } | |
bd7854cb | 1717 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 1718 | { |
1719 | /* | |
1720 | * Deny *interface*... | |
1721 | */ | |
1722 | ||
1723 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
1724 | ||
1725 | ifptr = ifname + strlen(ifname); | |
1726 | ||
1727 | if (ifptr[-1] == ')') | |
1728 | { | |
1729 | ifptr --; | |
1730 | *ifptr = '\0'; | |
1731 | } | |
1732 | ||
5bd77a73 | 1733 | temp->type = CUPSD_AUTH_INTERFACE; |
ef416fc2 | 1734 | temp->mask.name.name = strdup(ifname); |
1735 | temp->mask.name.length = ifptr - ifname; | |
1736 | } | |
1737 | else | |
1738 | { | |
1739 | /* | |
1740 | * Deny name... | |
1741 | */ | |
1742 | ||
5bd77a73 | 1743 | temp->type = CUPSD_AUTH_NAME; |
ef416fc2 | 1744 | temp->mask.name.name = strdup(name); |
1745 | temp->mask.name.length = strlen(name); | |
1746 | } | |
1747 | } | |
1748 | ||
1749 | ||
1750 | /* | |
1751 | * 'cupsdDenyIP()' - Add an IP address or network that is not allowed to | |
1752 | * access the location. | |
1753 | */ | |
1754 | ||
1755 | void | |
1756 | cupsdDenyIP(cupsd_location_t *loc, /* I - Location to add to */ | |
ac884b6a MS |
1757 | const unsigned address[4],/* I - IP address to add */ |
1758 | const unsigned netmask[4])/* I - Netmask of address */ | |
ef416fc2 | 1759 | { |
1760 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1761 | ||
1762 | ||
1763 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1764 | "cupsdDenyIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 1765 | loc, loc->location ? loc->location : "nil", |
1766 | address[0], address[1], address[2], address[3], | |
1767 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 1768 | |
1769 | if ((temp = add_deny(loc)) == NULL) | |
1770 | return; | |
1771 | ||
5bd77a73 | 1772 | temp->type = CUPSD_AUTH_IP; |
ef416fc2 | 1773 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); |
1774 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
1775 | } | |
1776 | ||
1777 | ||
1778 | /* | |
1779 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1780 | */ | |
1781 | ||
1782 | cupsd_location_t * /* O - Location that matches */ | |
1783 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1784 | http_state_t state) /* I - HTTP state/request */ | |
1785 | { | |
ef416fc2 | 1786 | char uri[HTTP_MAX_URI], |
1787 | /* URI in request... */ | |
1788 | *uriptr; /* Pointer into URI */ | |
1789 | cupsd_location_t *loc, /* Current location */ | |
1790 | *best; /* Best match for location so far */ | |
1791 | int bestlen; /* Length of best match */ | |
1792 | int limit; /* Limit field */ | |
5bd77a73 | 1793 | static const int limits[] = /* Map http_status_t to CUPSD_AUTH_LIMIT_xyz */ |
ef416fc2 | 1794 | { |
5bd77a73 MS |
1795 | CUPSD_AUTH_LIMIT_ALL, |
1796 | CUPSD_AUTH_LIMIT_OPTIONS, | |
1797 | CUPSD_AUTH_LIMIT_GET, | |
1798 | CUPSD_AUTH_LIMIT_GET, | |
1799 | CUPSD_AUTH_LIMIT_HEAD, | |
1800 | CUPSD_AUTH_LIMIT_POST, | |
1801 | CUPSD_AUTH_LIMIT_POST, | |
1802 | CUPSD_AUTH_LIMIT_POST, | |
1803 | CUPSD_AUTH_LIMIT_PUT, | |
1804 | CUPSD_AUTH_LIMIT_PUT, | |
1805 | CUPSD_AUTH_LIMIT_DELETE, | |
1806 | CUPSD_AUTH_LIMIT_TRACE, | |
1807 | CUPSD_AUTH_LIMIT_ALL, | |
1808 | CUPSD_AUTH_LIMIT_ALL | |
ef416fc2 | 1809 | }; |
1810 | ||
1811 | ||
1812 | /* | |
1813 | * First copy the connection URI to a local string so we have drop | |
1814 | * any .ppd extension from the pathname in /printers or /classes | |
1815 | * URIs... | |
1816 | */ | |
1817 | ||
1818 | strlcpy(uri, path, sizeof(uri)); | |
1819 | ||
1820 | if (!strncmp(uri, "/printers/", 10) || | |
1821 | !strncmp(uri, "/classes/", 9)) | |
1822 | { | |
1823 | /* | |
1824 | * Check if the URI has .ppd on the end... | |
1825 | */ | |
1826 | ||
1827 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1828 | ||
1829 | if (!strcmp(uriptr, ".ppd")) | |
1830 | *uriptr = '\0'; | |
1831 | } | |
1832 | ||
1833 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1834 | ||
1835 | /* | |
1836 | * Loop through the list of locations to find a match... | |
1837 | */ | |
1838 | ||
1839 | limit = limits[state]; | |
1840 | best = NULL; | |
1841 | bestlen = 0; | |
1842 | ||
bd7854cb | 1843 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1844 | loc; | |
1845 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1846 | { |
1847 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1848 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1849 | |
1850 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1851 | { | |
1852 | /* | |
1853 | * Use case-insensitive comparison for queue names... | |
1854 | */ | |
1855 | ||
e1d6a774 | 1856 | if (loc->length > bestlen && loc->location && |
bd7854cb | 1857 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1858 | loc->location[0] == '/' && |
1859 | (limit & loc->limit) != 0) | |
1860 | { | |
1861 | best = loc; | |
1862 | bestlen = loc->length; | |
1863 | } | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | /* | |
1868 | * Use case-sensitive comparison for other URIs... | |
1869 | */ | |
1870 | ||
e1d6a774 | 1871 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1872 | !strncmp(uri, loc->location, loc->length) && |
1873 | loc->location[0] == '/' && | |
1874 | (limit & loc->limit) != 0) | |
1875 | { | |
1876 | best = loc; | |
1877 | bestlen = loc->length; | |
1878 | } | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | /* | |
1883 | * Return the match, if any... | |
1884 | */ | |
1885 | ||
1886 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1887 | best ? best->location : "NONE"); | |
1888 | ||
1889 | return (best); | |
1890 | } | |
1891 | ||
1892 | ||
1893 | /* | |
1894 | * 'cupsdFindLocation()' - Find the named location. | |
1895 | */ | |
1896 | ||
1897 | cupsd_location_t * /* O - Location that matches */ | |
1898 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1899 | { | |
bd7854cb | 1900 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1901 | |
1902 | ||
bd7854cb | 1903 | key.location = (char *)location; |
ef416fc2 | 1904 | |
bd7854cb | 1905 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1906 | } |
1907 | ||
1908 | ||
ef416fc2 | 1909 | /* |
1910 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1911 | */ | |
1912 | ||
1913 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1914 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1915 | const char *owner)/* I - Owner of object */ | |
1916 | { | |
1917 | int i, j, /* Looping vars */ | |
2fb76298 MS |
1918 | auth, /* Authorization status */ |
1919 | type; /* Type of authentication */ | |
ef416fc2 | 1920 | unsigned address[4]; /* Authorization address */ |
1921 | cupsd_location_t *best; /* Best match for location so far */ | |
1922 | int hostlen; /* Length of hostname */ | |
db1f069b MS |
1923 | char username[256], /* Username to authorize */ |
1924 | ownername[256], /* Owner name to authorize */ | |
1925 | *ptr; /* Pointer into username */ | |
ef416fc2 | 1926 | struct passwd *pw; /* User password data */ |
1927 | static const char * const levels[] = /* Auth levels */ | |
1928 | { | |
1929 | "ANON", | |
1930 | "USER", | |
1931 | "GROUP" | |
1932 | }; | |
1933 | static const char * const types[] = /* Auth types */ | |
1934 | { | |
2fb76298 MS |
1935 | "None", |
1936 | "Basic", | |
1937 | "Digest", | |
1938 | "BasicDigest", | |
1939 | "Negotiate" | |
ef416fc2 | 1940 | }; |
1941 | ||
1942 | ||
1943 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1944 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
f301802f | 1945 | con->uri, con->best, con->best ? con->best->location ? |
1946 | con->best->location : "(null)" : ""); | |
fa73b229 | 1947 | if (owner) |
1948 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1949 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1950 | |
1951 | /* | |
1952 | * If there is no "best" authentication rule for this request, then | |
1953 | * access is allowed from the local system and denied from other | |
1954 | * addresses... | |
1955 | */ | |
1956 | ||
1957 | if (!con->best) | |
1958 | { | |
1959 | if (!strcmp(con->http.hostname, "localhost") || | |
1960 | !strcmp(con->http.hostname, ServerName)) | |
1961 | return (HTTP_OK); | |
1962 | else | |
1963 | return (HTTP_FORBIDDEN); | |
1964 | } | |
1965 | ||
1966 | best = con->best; | |
1967 | ||
5bd77a73 | 1968 | if ((type = best->type) == CUPSD_AUTH_DEFAULT) |
2fb76298 MS |
1969 | type = DefaultAuthType; |
1970 | ||
ef416fc2 | 1971 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
5bd77a73 MS |
1972 | "cupsdIsAuthorized: level=CUPSD_AUTH_%s, type=%s, " |
1973 | "satisfy=CUPSD_AUTH_SATISFY_%s, num_names=%d", | |
2fb76298 | 1974 | levels[best->level], types[type], |
ef416fc2 | 1975 | best->satisfy ? "ANY" : "ALL", best->num_names); |
1976 | ||
5bd77a73 | 1977 | if (best->limit == CUPSD_AUTH_LIMIT_IPP) |
ef416fc2 | 1978 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", |
1979 | best->op, ippOpString(best->op)); | |
1980 | ||
1981 | /* | |
1982 | * Check host/ip-based accesses... | |
1983 | */ | |
1984 | ||
1985 | #ifdef AF_INET6 | |
1986 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1987 | { | |
1988 | /* | |
1989 | * Copy IPv6 address... | |
1990 | */ | |
1991 | ||
1992 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1993 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1994 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1995 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1996 | } | |
1997 | else | |
1998 | #endif /* AF_INET6 */ | |
1999 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
2000 | { | |
2001 | /* | |
2002 | * Copy IPv4 address... | |
2003 | */ | |
2004 | ||
2005 | address[0] = 0; | |
2006 | address[1] = 0; | |
2007 | address[2] = 0; | |
2008 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
2009 | } | |
2010 | else | |
2011 | memset(address, 0, sizeof(address)); | |
2012 | ||
2013 | hostlen = strlen(con->http.hostname); | |
2014 | ||
080811b1 | 2015 | auth = cupsdCheckAccess(address, con->http.hostname, hostlen, best) |
5bd77a73 | 2016 | ? CUPSD_AUTH_ALLOW : CUPSD_AUTH_DENY; |
ef416fc2 | 2017 | |
5bd77a73 | 2018 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=CUPSD_AUTH_%s...", |
ef416fc2 | 2019 | auth ? "DENY" : "ALLOW"); |
2020 | ||
5bd77a73 | 2021 | if (auth == CUPSD_AUTH_DENY && best->satisfy == CUPSD_AUTH_SATISFY_ALL) |
ef416fc2 | 2022 | return (HTTP_FORBIDDEN); |
2023 | ||
2024 | #ifdef HAVE_SSL | |
2025 | /* | |
2026 | * See if encryption is required... | |
2027 | */ | |
2028 | ||
f7deaa1a | 2029 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
a74454a7 | 2030 | strcasecmp(con->http.hostname, "localhost") && |
5bd77a73 MS |
2031 | best->satisfy == CUPSD_AUTH_SATISFY_ALL) && |
2032 | !(type == CUPSD_AUTH_NEGOTIATE || | |
2033 | (type == CUPSD_AUTH_NONE && DefaultAuthType == CUPSD_AUTH_NEGOTIATE))) | |
ef416fc2 | 2034 | { |
355e94dc | 2035 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2036 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
2037 | return (HTTP_UPGRADE_REQUIRED); | |
2038 | } | |
2039 | #endif /* HAVE_SSL */ | |
2040 | ||
2041 | /* | |
2042 | * Now see what access level is required... | |
2043 | */ | |
2044 | ||
5bd77a73 MS |
2045 | if (best->level == CUPSD_AUTH_ANON || /* Anonymous access - allow it */ |
2046 | (type == CUPSD_AUTH_NONE && best->num_names == 0)) | |
ef416fc2 | 2047 | return (HTTP_OK); |
2048 | ||
5bd77a73 MS |
2049 | if (!con->username[0] && type == CUPSD_AUTH_NONE && |
2050 | best->limit == CUPSD_AUTH_LIMIT_IPP) | |
ef416fc2 | 2051 | { |
2052 | /* | |
2053 | * Check for unauthenticated username... | |
2054 | */ | |
2055 | ||
2056 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
2057 | ||
2058 | ||
2059 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
2060 | if (attr) | |
2061 | { | |
355e94dc | 2062 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2063 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
2064 | attr->values[0].string.text); | |
db1f069b | 2065 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 2066 | } |
5bd77a73 | 2067 | else if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
ef416fc2 | 2068 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2069 | else | |
2070 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2071 | } | |
fa73b229 | 2072 | else |
2073 | { | |
355e94dc | 2074 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 2075 | con->username); |
2076 | ||
f7deaa1a | 2077 | #ifdef HAVE_AUTHORIZATION_H |
2078 | if (!con->username[0] && !con->authref) | |
2079 | #else | |
fa73b229 | 2080 | if (!con->username[0]) |
f7deaa1a | 2081 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 2082 | { |
5bd77a73 | 2083 | if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
fa73b229 | 2084 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2085 | else | |
2086 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2087 | } | |
2088 | ||
5bd77a73 MS |
2089 | if (con->type != type && type != CUPSD_AUTH_NONE && |
2090 | (con->type != CUPSD_AUTH_BASIC || type != CUPSD_AUTH_BASICDIGEST)) | |
2fb76298 MS |
2091 | { |
2092 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s!", | |
2093 | types[con->type], types[type]); | |
2094 | ||
2095 | return (HTTP_UNAUTHORIZED); | |
2096 | } | |
2097 | ||
db1f069b | 2098 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 2099 | } |
ef416fc2 | 2100 | |
2101 | /* | |
fa73b229 | 2102 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 2103 | * access... (root always matches) |
2104 | */ | |
2105 | ||
fa73b229 | 2106 | if (!strcmp(username, "root")) |
ef416fc2 | 2107 | return (HTTP_OK); |
2108 | ||
db1f069b MS |
2109 | /* |
2110 | * Strip any @domain or @KDC from the username and owner... | |
2111 | */ | |
2112 | ||
2113 | if ((ptr = strchr(username, '@')) != NULL) | |
2114 | *ptr = '\0'; | |
2115 | ||
2116 | if (owner) | |
2117 | { | |
2118 | strlcpy(ownername, owner, sizeof(ownername)); | |
2119 | ||
2120 | if ((ptr = strchr(ownername, '@')) != NULL) | |
2121 | *ptr = '\0'; | |
2122 | } | |
2123 | else | |
2124 | ownername[0] = '\0'; | |
2125 | ||
ef416fc2 | 2126 | /* |
2127 | * Get the user info... | |
2128 | */ | |
2129 | ||
f7deaa1a | 2130 | if (username[0]) |
2131 | { | |
2132 | pw = getpwnam(username); | |
2133 | endpwent(); | |
2134 | } | |
2135 | else | |
2136 | pw = NULL; | |
ef416fc2 | 2137 | |
5bd77a73 | 2138 | if (best->level == CUPSD_AUTH_USER) |
ef416fc2 | 2139 | { |
2140 | /* | |
2141 | * If there are no names associated with this location, then | |
2142 | * any valid user is OK... | |
2143 | */ | |
2144 | ||
2145 | if (best->num_names == 0) | |
2146 | return (HTTP_OK); | |
2147 | ||
2148 | /* | |
2149 | * Otherwise check the user list and return OK if this user is | |
2150 | * allowed... | |
2151 | */ | |
2152 | ||
2153 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2154 | "cupsdIsAuthorized: Checking user membership..."); | |
2155 | ||
f7deaa1a | 2156 | #ifdef HAVE_AUTHORIZATION_H |
2157 | /* | |
2158 | * If an authorization reference was supplied it must match a right name... | |
2159 | */ | |
2160 | ||
2161 | if (con->authref) | |
2162 | { | |
2163 | for (i = 0; i < best->num_names; i ++) | |
2164 | { | |
2165 | if (!strncasecmp(best->names[i], "@AUTHKEY(", 9) && | |
2166 | check_authref(con, best->names[i] + 9)) | |
2167 | return (HTTP_OK); | |
2168 | else if (!strcasecmp(best->names[i], "@SYSTEM") && | |
2169 | SystemGroupAuthKey && | |
2170 | check_authref(con, SystemGroupAuthKey)) | |
2171 | return (HTTP_OK); | |
2172 | } | |
2173 | ||
ee571f26 | 2174 | return (HTTP_FORBIDDEN); |
f7deaa1a | 2175 | } |
2176 | #endif /* HAVE_AUTHORIZATION_H */ | |
2177 | ||
ef416fc2 | 2178 | for (i = 0; i < best->num_names; i ++) |
2179 | { | |
2180 | if (!strcasecmp(best->names[i], "@OWNER") && owner && | |
db1f069b | 2181 | !strcasecmp(username, ownername)) |
ef416fc2 | 2182 | return (HTTP_OK); |
2183 | else if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2184 | { | |
2185 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2186 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2187 | return (HTTP_OK); |
2188 | } | |
2189 | else if (best->names[i][0] == '@') | |
2190 | { | |
fa73b229 | 2191 | if (cupsdCheckGroup(username, pw, best->names[i] + 1)) |
ef416fc2 | 2192 | return (HTTP_OK); |
2193 | } | |
fa73b229 | 2194 | else if (!strcasecmp(username, best->names[i])) |
ef416fc2 | 2195 | return (HTTP_OK); |
2196 | } | |
2197 | ||
ee571f26 | 2198 | return (HTTP_FORBIDDEN); |
ef416fc2 | 2199 | } |
2200 | ||
2201 | /* | |
2202 | * Check to see if this user is in any of the named groups... | |
2203 | */ | |
2204 | ||
2205 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2206 | "cupsdIsAuthorized: Checking group membership..."); | |
2207 | ||
2208 | /* | |
2209 | * Check to see if this user is in any of the named groups... | |
2210 | */ | |
2211 | ||
2212 | for (i = 0; i < best->num_names; i ++) | |
2213 | { | |
2214 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2215 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
2216 | best->names[i]); | |
2217 | ||
2218 | if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2219 | { | |
2220 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2221 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2222 | return (HTTP_OK); |
2223 | } | |
fa73b229 | 2224 | else if (cupsdCheckGroup(username, pw, best->names[i])) |
ef416fc2 | 2225 | return (HTTP_OK); |
2226 | } | |
2227 | ||
2228 | /* | |
2229 | * The user isn't part of the specified group, so deny access... | |
2230 | */ | |
2231 | ||
355e94dc | 2232 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2233 | "cupsdIsAuthorized: User not in group(s)!"); |
2234 | ||
ee571f26 | 2235 | return (HTTP_FORBIDDEN); |
ef416fc2 | 2236 | } |
2237 | ||
2238 | ||
2239 | /* | |
2240 | * 'add_allow()' - Add an allow mask to the location. | |
2241 | */ | |
2242 | ||
2243 | static cupsd_authmask_t * /* O - New mask record */ | |
2244 | add_allow(cupsd_location_t *loc) /* I - Location to add to */ | |
2245 | { | |
2246 | cupsd_authmask_t *temp; /* New mask record */ | |
2247 | ||
2248 | ||
2249 | /* | |
2250 | * Range-check... | |
2251 | */ | |
2252 | ||
2253 | if (loc == NULL) | |
2254 | return (NULL); | |
2255 | ||
2256 | /* | |
2257 | * Try to allocate memory for the record... | |
2258 | */ | |
2259 | ||
2260 | if (loc->num_allow == 0) | |
2261 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2262 | else | |
2263 | temp = realloc(loc->allow, sizeof(cupsd_authmask_t) * (loc->num_allow + 1)); | |
2264 | ||
2265 | if (temp == NULL) | |
2266 | return (NULL); | |
2267 | ||
2268 | loc->allow = temp; | |
2269 | temp += loc->num_allow; | |
2270 | loc->num_allow ++; | |
2271 | ||
2272 | /* | |
2273 | * Clear the mask record and return... | |
2274 | */ | |
2275 | ||
2276 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2277 | return (temp); | |
2278 | } | |
2279 | ||
2280 | ||
2281 | /* | |
2282 | * 'add_deny()' - Add a deny mask to the location. | |
2283 | */ | |
2284 | ||
2285 | static cupsd_authmask_t * /* O - New mask record */ | |
2286 | add_deny(cupsd_location_t *loc) /* I - Location to add to */ | |
2287 | { | |
2288 | cupsd_authmask_t *temp; /* New mask record */ | |
2289 | ||
2290 | ||
2291 | /* | |
2292 | * Range-check... | |
2293 | */ | |
2294 | ||
2295 | if (loc == NULL) | |
2296 | return (NULL); | |
2297 | ||
2298 | /* | |
2299 | * Try to allocate memory for the record... | |
2300 | */ | |
2301 | ||
2302 | if (loc->num_deny == 0) | |
2303 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2304 | else | |
2305 | temp = realloc(loc->deny, sizeof(cupsd_authmask_t) * (loc->num_deny + 1)); | |
2306 | ||
2307 | if (temp == NULL) | |
2308 | return (NULL); | |
2309 | ||
2310 | loc->deny = temp; | |
2311 | temp += loc->num_deny; | |
2312 | loc->num_deny ++; | |
2313 | ||
2314 | /* | |
2315 | * Clear the mask record and return... | |
2316 | */ | |
2317 | ||
2318 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2319 | return (temp); | |
2320 | } | |
2321 | ||
2322 | ||
f7deaa1a | 2323 | #ifdef HAVE_AUTHORIZATION_H |
2324 | /* | |
2325 | * 'check_authref()' - Check if an authorization services reference has the | |
2326 | * supplied right. | |
2327 | */ | |
2328 | ||
2329 | static int /* O - 1 if right is valid, 0 otherwise */ | |
2330 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
2331 | const char *right) /* I - Right name */ | |
2332 | { | |
2333 | OSStatus status; /* OS Status */ | |
2334 | AuthorizationItem authright; /* Authorization right */ | |
2335 | AuthorizationRights authrights; /* Authorization rights */ | |
2336 | AuthorizationFlags authflags; /* Authorization flags */ | |
2337 | ||
2338 | ||
2339 | /* | |
2340 | * Check to see if the user is allowed to perform the task... | |
2341 | */ | |
2342 | ||
2343 | if (!con->authref) | |
2344 | return (0); | |
2345 | ||
2346 | authright.name = right; | |
2347 | authright.valueLength = 0; | |
2348 | authright.value = NULL; | |
2349 | authright.flags = 0; | |
2350 | ||
2351 | authrights.count = 1; | |
2352 | authrights.items = &authright; | |
2353 | ||
2354 | authflags = kAuthorizationFlagDefaults | | |
2355 | kAuthorizationFlagExtendRights; | |
2356 | ||
2357 | if ((status = AuthorizationCopyRights(con->authref, &authrights, | |
2358 | kAuthorizationEmptyEnvironment, | |
2359 | authflags, NULL)) != 0) | |
2360 | { | |
2361 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2362 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2363 | authright.name, (int)status, cssmErrorString(status)); | |
2364 | return (0); | |
2365 | } | |
2366 | ||
2367 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2368 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2369 | authright.name); | |
2370 | ||
2371 | return (1); | |
2372 | } | |
2373 | #endif /* HAVE_AUTHORIZATION_H */ | |
2374 | ||
2375 | ||
bd7854cb | 2376 | /* |
2377 | * 'compare_locations()' - Compare two locations. | |
2378 | */ | |
2379 | ||
2380 | static int /* O - Result of comparison */ | |
2381 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2382 | cupsd_location_t *b) /* I - Second location */ | |
2383 | { | |
2384 | return (strcmp(b->location, a->location)); | |
2385 | } | |
2386 | ||
2387 | ||
d09495fa | 2388 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 2389 | /* |
2390 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2391 | * as needed. | |
2392 | */ | |
2393 | ||
2394 | static char * /* O - Encrypted password */ | |
2395 | cups_crypt(const char *pw, /* I - Password string */ | |
2396 | const char *salt) /* I - Salt (key) string */ | |
2397 | { | |
bd7854cb | 2398 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2399 | { |
2400 | /* | |
2401 | * Use MD5 passwords without the benefit of PAM; this is for | |
2402 | * Slackware Linux, and the algorithm was taken from the | |
2403 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2404 | */ | |
2405 | ||
2406 | int i; /* Looping var */ | |
2407 | unsigned long n; /* Output number */ | |
2408 | int pwlen; /* Length of password string */ | |
2409 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2410 | char *ptr; /* Pointer into result string */ | |
2411 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2412 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2413 | unsigned char digest[16]; /* MD5 digest result */ | |
2414 | static char result[120]; /* Final password string */ | |
2415 | ||
2416 | ||
2417 | /* | |
2418 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2419 | * Get a maximum of 8 characters of salt data after $1$... | |
2420 | */ | |
2421 | ||
2422 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2423 | if (*salt_end == '$') | |
2424 | break; | |
2425 | ||
2426 | /* | |
2427 | * Compute the MD5 sum we need... | |
2428 | */ | |
2429 | ||
2430 | pwlen = strlen(pw); | |
2431 | ||
757d2cad | 2432 | _cupsMD5Init(&state); |
2433 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2434 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2435 | |
757d2cad | 2436 | _cupsMD5Init(&state2); |
2437 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2438 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2439 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2440 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2441 | |
2442 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2443 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2444 | |
2445 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2446 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2447 | |
757d2cad | 2448 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2449 | |
2450 | for (i = 0; i < 1000; i ++) | |
2451 | { | |
757d2cad | 2452 | _cupsMD5Init(&state); |
ef416fc2 | 2453 | |
2454 | if (i & 1) | |
757d2cad | 2455 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2456 | else |
757d2cad | 2457 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2458 | |
2459 | if (i % 3) | |
757d2cad | 2460 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2461 | |
2462 | if (i % 7) | |
757d2cad | 2463 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2464 | |
2465 | if (i & 1) | |
757d2cad | 2466 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2467 | else |
757d2cad | 2468 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2469 | |
757d2cad | 2470 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2471 | } |
2472 | ||
2473 | /* | |
2474 | * Copy the final sum to the result string and return... | |
2475 | */ | |
2476 | ||
2477 | memcpy(result, salt, salt_end - salt); | |
2478 | ptr = result + (salt_end - salt); | |
2479 | *ptr++ = '$'; | |
2480 | ||
2481 | for (i = 0; i < 5; i ++, ptr += 4) | |
2482 | { | |
2483 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2484 | ||
2485 | if (i < 4) | |
2486 | n |= digest[i + 12]; | |
2487 | else | |
2488 | n |= digest[5]; | |
2489 | ||
2490 | to64(ptr, n, 4); | |
2491 | } | |
2492 | ||
2493 | to64(ptr, digest[11], 2); | |
2494 | ptr += 2; | |
2495 | *ptr = '\0'; | |
2496 | ||
2497 | return (result); | |
2498 | } | |
2499 | else | |
2500 | { | |
2501 | /* | |
2502 | * Use the standard crypt() function... | |
2503 | */ | |
2504 | ||
2505 | return (crypt(pw, salt)); | |
2506 | } | |
2507 | } | |
d09495fa | 2508 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
ef416fc2 | 2509 | |
2510 | ||
f7deaa1a | 2511 | #ifdef HAVE_GSSAPI |
2512 | /* | |
2513 | * 'get_gss_creds()' - Obtain GSS credentials. | |
2514 | */ | |
2515 | ||
2516 | static gss_cred_id_t /* O - Server credentials */ | |
3dfe78b3 MS |
2517 | get_gss_creds( |
2518 | const char *service_name, /* I - Service name */ | |
2519 | const char *con_server_name) /* I - Hostname of server */ | |
f7deaa1a | 2520 | { |
2521 | OM_uint32 major_status, /* Major status code */ | |
2522 | minor_status; /* Minor status code */ | |
2523 | gss_name_t server_name; /* Server name */ | |
2524 | gss_cred_id_t server_creds; /* Server credentials */ | |
2525 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
2526 | /* Service name token */ | |
3dfe78b3 | 2527 | char buf[1024]; /* Service name buffer */ |
f7deaa1a | 2528 | |
2529 | ||
3dfe78b3 | 2530 | snprintf(buf, sizeof(buf), "%s@%s", service_name, con_server_name); |
f7deaa1a | 2531 | |
2532 | token.value = buf; | |
2533 | token.length = strlen(buf); | |
2534 | server_name = GSS_C_NO_NAME; | |
2535 | major_status = gss_import_name(&minor_status, &token, | |
2536 | GSS_C_NT_HOSTBASED_SERVICE, | |
2537 | &server_name); | |
2538 | ||
2539 | memset(&token, 0, sizeof(token)); | |
2540 | ||
2541 | if (GSS_ERROR(major_status)) | |
2542 | { | |
2543 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2544 | "gss_import_name() failed"); | |
2545 | return (NULL); | |
2546 | } | |
2547 | ||
2548 | major_status = gss_display_name(&minor_status, server_name, &token, NULL); | |
2549 | ||
2550 | if (GSS_ERROR(major_status)) | |
2551 | { | |
2552 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2553 | "gss_display_name() failed"); | |
2554 | return (NULL); | |
2555 | } | |
2556 | ||
c24d2134 MS |
2557 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2558 | "get_gss_creds: Attempting to acquire credentials for %s...", | |
f7deaa1a | 2559 | (char *)token.value); |
2560 | ||
2561 | server_creds = GSS_C_NO_CREDENTIAL; | |
2562 | major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE, | |
2563 | GSS_C_NO_OID_SET, GSS_C_ACCEPT, | |
2564 | &server_creds, NULL, NULL); | |
2565 | if (GSS_ERROR(major_status)) | |
2566 | { | |
2567 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2568 | "gss_acquire_cred() failed"); | |
2569 | gss_release_name(&minor_status, &server_name); | |
2570 | gss_release_buffer(&minor_status, &token); | |
2571 | return (NULL); | |
2572 | } | |
2573 | ||
c24d2134 MS |
2574 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2575 | "get_gss_creds: Credentials acquired successfully for %s.", | |
f7deaa1a | 2576 | (char *)token.value); |
2577 | ||
2578 | gss_release_name(&minor_status, &server_name); | |
2579 | gss_release_buffer(&minor_status, &token); | |
2580 | ||
2581 | return (server_creds); | |
2582 | } | |
2583 | #endif /* HAVE_GSSAPI */ | |
2584 | ||
2585 | ||
e1d6a774 | 2586 | /* |
2587 | * 'get_md5_password()' - Get an MD5 password. | |
2588 | */ | |
2589 | ||
2590 | static char * /* O - MD5 password string */ | |
2591 | get_md5_password(const char *username, /* I - Username */ | |
2592 | const char *group, /* I - Group */ | |
2593 | char passwd[33]) /* O - MD5 password string */ | |
2594 | { | |
2595 | cups_file_t *fp; /* passwd.md5 file */ | |
2596 | char filename[1024], /* passwd.md5 filename */ | |
2597 | line[256], /* Line from file */ | |
2598 | tempuser[33], /* User from file */ | |
2599 | tempgroup[33]; /* Group from file */ | |
2600 | ||
2601 | ||
2602 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2603 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2604 | username, group ? group : "(null)", passwd); | |
2605 | ||
2606 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2607 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2608 | { | |
2609 | if (errno != ENOENT) | |
2610 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2611 | strerror(errno)); | |
2612 | ||
2613 | return (NULL); | |
2614 | } | |
2615 | ||
2616 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2617 | { | |
2618 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2619 | { | |
2620 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2621 | continue; | |
2622 | } | |
2623 | ||
2624 | if (!strcmp(username, tempuser) && | |
2625 | (group == NULL || !strcmp(group, tempgroup))) | |
2626 | { | |
2627 | /* | |
2628 | * Found the password entry! | |
2629 | */ | |
2630 | ||
2631 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2632 | username, tempgroup); | |
2633 | ||
2634 | cupsFileClose(fp); | |
2635 | return (passwd); | |
2636 | } | |
2637 | } | |
2638 | ||
2639 | /* | |
2640 | * Didn't find a password entry - return NULL! | |
2641 | */ | |
2642 | ||
2643 | cupsFileClose(fp); | |
2644 | return (NULL); | |
2645 | } | |
2646 | ||
2647 | ||
ef416fc2 | 2648 | #if HAVE_LIBPAM |
2649 | /* | |
2650 | * 'pam_func()' - PAM conversation function. | |
2651 | */ | |
2652 | ||
2653 | static int /* O - Success or failure */ | |
2654 | pam_func( | |
2655 | int num_msg, /* I - Number of messages */ | |
2656 | const struct pam_message **msg, /* I - Messages */ | |
2657 | struct pam_response **resp, /* O - Responses */ | |
2658 | void *appdata_ptr) | |
2659 | /* I - Pointer to connection */ | |
2660 | { | |
2661 | int i; /* Looping var */ | |
2662 | struct pam_response *replies; /* Replies */ | |
2663 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2664 | ||
2665 | ||
2666 | /* | |
2667 | * Allocate memory for the responses... | |
2668 | */ | |
2669 | ||
2670 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2671 | return (PAM_CONV_ERR); | |
2672 | ||
2673 | /* | |
2674 | * Answer all of the messages... | |
2675 | */ | |
2676 | ||
2677 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2678 | ||
2679 | #ifdef __hpux | |
2680 | /* | |
2681 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2682 | * module. This is a workaround... | |
2683 | */ | |
2684 | ||
2685 | data = auth_data; | |
2686 | (void)appdata_ptr; | |
2687 | #else | |
2688 | data = (cupsd_authdata_t *)appdata_ptr; | |
2689 | #endif /* __hpux */ | |
2690 | ||
2691 | for (i = 0; i < num_msg; i ++) | |
2692 | { | |
2693 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2694 | ||
2695 | switch (msg[i]->msg_style) | |
2696 | { | |
2697 | case PAM_PROMPT_ECHO_ON: | |
2698 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2699 | data->username)); | |
2700 | replies[i].resp_retcode = PAM_SUCCESS; | |
2701 | replies[i].resp = strdup(data->username); | |
2702 | break; | |
2703 | ||
2704 | case PAM_PROMPT_ECHO_OFF: | |
2705 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2706 | data->password)); | |
2707 | replies[i].resp_retcode = PAM_SUCCESS; | |
2708 | replies[i].resp = strdup(data->password); | |
2709 | break; | |
2710 | ||
2711 | case PAM_TEXT_INFO: | |
2712 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2713 | replies[i].resp_retcode = PAM_SUCCESS; | |
2714 | replies[i].resp = NULL; | |
2715 | break; | |
2716 | ||
2717 | case PAM_ERROR_MSG: | |
2718 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2719 | replies[i].resp_retcode = PAM_SUCCESS; | |
2720 | replies[i].resp = NULL; | |
2721 | break; | |
2722 | ||
2723 | default: | |
2724 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2725 | msg[i]->msg_style)); | |
2726 | free(replies); | |
2727 | return (PAM_CONV_ERR); | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | /* | |
2732 | * Return the responses back to PAM... | |
2733 | */ | |
2734 | ||
2735 | *resp = replies; | |
2736 | ||
2737 | return (PAM_SUCCESS); | |
2738 | } | |
f7deaa1a | 2739 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 2740 | |
2741 | ||
2742 | /* | |
2743 | * 'to64()' - Base64-encode an integer value... | |
2744 | */ | |
2745 | ||
2746 | static void | |
2747 | to64(char *s, /* O - Output string */ | |
2748 | unsigned long v, /* I - Value to encode */ | |
2749 | int n) /* I - Number of digits */ | |
2750 | { | |
2751 | const char *itoa64 = "./0123456789" | |
2752 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2753 | "abcdefghijklmnopqrstuvwxyz"; | |
2754 | ||
2755 | ||
2756 | for (; n > 0; n --, v >>= 6) | |
2757 | *s++ = itoa64[v & 0x3f]; | |
2758 | } | |
2759 | #endif /* HAVE_LIBPAM */ | |
2760 | ||
2761 | ||
2762 | /* | |
b19ccc9e | 2763 | * End of "$Id: auth.c 7830 2008-08-04 20:38:50Z mike $". |
ef416fc2 | 2764 | */ |