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Commit | Line | Data |
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b423cd4c | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
5ec1fd3d | 4 | * Authorization routines for the CUPS scheduler. |
ef416fc2 | 5 | * |
84ec3a84 | 6 | * Copyright 2007-2014 by Apple Inc. |
5ec1fd3d | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
f7deaa1a | 8 | * |
5ec1fd3d MS |
9 | * This file contains Kerberos support code, copyright 2006 by |
10 | * Jelmer Vernooij. | |
ef416fc2 | 11 | * |
5ec1fd3d MS |
12 | * These coded instructions, statements, and computer programs are the |
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 | ||
19 | /* | |
20 | * Include necessary headers... | |
21 | */ | |
22 | ||
23 | #include "cupsd.h" | |
24 | #include <grp.h> | |
25 | #ifdef HAVE_SHADOW_H | |
26 | # include <shadow.h> | |
27 | #endif /* HAVE_SHADOW_H */ | |
28 | #ifdef HAVE_CRYPT_H | |
29 | # include <crypt.h> | |
30 | #endif /* HAVE_CRYPT_H */ | |
31 | #if HAVE_LIBPAM | |
32 | # ifdef HAVE_PAM_PAM_APPL_H | |
33 | # include <pam/pam_appl.h> | |
34 | # else | |
35 | # include <security/pam_appl.h> | |
36 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
37 | #endif /* HAVE_LIBPAM */ | |
bd7854cb | 38 | #ifdef HAVE_MEMBERSHIP_H |
39 | # include <membership.h> | |
40 | #endif /* HAVE_MEMBERSHIP_H */ | |
f7deaa1a | 41 | #ifdef HAVE_AUTHORIZATION_H |
42 | # include <Security/AuthorizationTags.h> | |
43 | # ifdef HAVE_SECBASEPRIV_H | |
44 | # include <Security/SecBasePriv.h> | |
45 | # else | |
46 | extern const char *cssmErrorString(int error); | |
47 | # endif /* HAVE_SECBASEPRIV_H */ | |
48 | #endif /* HAVE_AUTHORIZATION_H */ | |
db1f069b MS |
49 | #ifdef HAVE_SYS_PARAM_H |
50 | # include <sys/param.h> | |
51 | #endif /* HAVE_SYS_PARAM_H */ | |
bc44d920 | 52 | #ifdef HAVE_SYS_UCRED_H |
53 | # include <sys/ucred.h> | |
54 | typedef struct xucred cupsd_ucred_t; | |
55 | # define CUPSD_UCRED_UID(c) (c).cr_uid | |
56 | #else | |
5a9febac | 57 | # ifndef __OpenBSD__ |
bc44d920 | 58 | typedef struct ucred cupsd_ucred_t; |
5a9febac MS |
59 | # else |
60 | typedef struct sockpeercred cupsd_ucred_t; | |
61 | # endif | |
bc44d920 | 62 | # define CUPSD_UCRED_UID(c) (c).uid |
63 | #endif /* HAVE_SYS_UCRED_H */ | |
ef416fc2 | 64 | |
65 | ||
66 | /* | |
67 | * Local functions... | |
68 | */ | |
69 | ||
f7deaa1a | 70 | #ifdef HAVE_AUTHORIZATION_H |
71 | static int check_authref(cupsd_client_t *con, const char *right); | |
72 | #endif /* HAVE_AUTHORIZATION_H */ | |
bd7854cb | 73 | static int compare_locations(cupsd_location_t *a, |
74 | cupsd_location_t *b); | |
10d09e33 | 75 | static cupsd_authmask_t *copy_authmask(cupsd_authmask_t *am, void *data); |
5a1d7a17 | 76 | #if !HAVE_LIBPAM |
ef416fc2 | 77 | static char *cups_crypt(const char *pw, const char *salt); |
5a1d7a17 | 78 | #endif /* !HAVE_LIBPAM */ |
10d09e33 | 79 | static void free_authmask(cupsd_authmask_t *am, void *data); |
ef416fc2 | 80 | #if HAVE_LIBPAM |
81 | static int pam_func(int, const struct pam_message **, | |
82 | struct pam_response **, void *); | |
5a1d7a17 | 83 | #else |
ef416fc2 | 84 | static void to64(char *s, unsigned long v, int n); |
85 | #endif /* HAVE_LIBPAM */ | |
86 | ||
87 | ||
88 | /* | |
89 | * Local structures... | |
90 | */ | |
91 | ||
92 | #if HAVE_LIBPAM | |
93 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
94 | { | |
3e7fe0ca MS |
95 | char username[HTTP_MAX_VALUE], /* Username string */ |
96 | password[HTTP_MAX_VALUE]; /* Password string */ | |
ef416fc2 | 97 | } cupsd_authdata_t; |
98 | #endif /* HAVE_LIBPAM */ | |
99 | ||
100 | ||
ef416fc2 | 101 | /* |
10d09e33 | 102 | * 'cupsdAddIPMask()' - Add an IP address authorization mask. |
ef416fc2 | 103 | */ |
104 | ||
10d09e33 MS |
105 | int /* O - 1 on success, 0 on failure */ |
106 | cupsdAddIPMask( | |
107 | cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
108 | const unsigned address[4], /* I - IP address */ | |
109 | const unsigned netmask[4]) /* I - IP netmask */ | |
ef416fc2 | 110 | { |
10d09e33 | 111 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 112 | |
113 | ||
10d09e33 MS |
114 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
115 | "cupsdAddIPMask(masks=%p(%p), address=%x:%x:%x:%x, " | |
116 | "netmask=%x:%x:%x:%x)", | |
117 | masks, *masks, | |
118 | address[0], address[1], address[2], address[3], | |
119 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 120 | |
10d09e33 MS |
121 | temp.type = CUPSD_AUTH_IP; |
122 | memcpy(temp.mask.ip.address, address, sizeof(temp.mask.ip.address)); | |
123 | memcpy(temp.mask.ip.netmask, netmask, sizeof(temp.mask.ip.netmask)); | |
ef416fc2 | 124 | |
bd7854cb | 125 | /* |
10d09e33 | 126 | * Create the masks array as needed and add... |
bd7854cb | 127 | */ |
128 | ||
10d09e33 MS |
129 | if (!*masks) |
130 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
131 | (cups_acopy_func_t)copy_authmask, | |
132 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 133 | |
10d09e33 MS |
134 | return (cupsArrayAdd(*masks, &temp)); |
135 | } | |
ef416fc2 | 136 | |
bd7854cb | 137 | |
10d09e33 MS |
138 | /* |
139 | * 'cupsdAddLocation()' - Add a location for authorization. | |
140 | */ | |
ef416fc2 | 141 | |
10d09e33 MS |
142 | void |
143 | cupsdAddLocation(cupsd_location_t *loc) /* I - Location to add */ | |
144 | { | |
ef416fc2 | 145 | /* |
10d09e33 | 146 | * Make sure the locations array is created... |
ef416fc2 | 147 | */ |
148 | ||
10d09e33 MS |
149 | if (!Locations) |
150 | Locations = cupsArrayNew3((cups_array_func_t)compare_locations, NULL, | |
151 | (cups_ahash_func_t)NULL, 0, | |
152 | (cups_acopy_func_t)NULL, | |
153 | (cups_afree_func_t)cupsdFreeLocation); | |
154 | ||
155 | if (Locations) | |
156 | { | |
157 | cupsArrayAdd(Locations, loc); | |
158 | ||
159 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: Added location \"%s\"", | |
160 | loc->location ? loc->location : "(null)"); | |
161 | } | |
ef416fc2 | 162 | } |
163 | ||
164 | ||
165 | /* | |
166 | * 'cupsdAddName()' - Add a name to a location... | |
167 | */ | |
168 | ||
169 | void | |
170 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
171 | char *name) /* I - Name to add */ | |
172 | { | |
ef416fc2 | 173 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", |
174 | loc, name); | |
175 | ||
10d09e33 MS |
176 | if (!loc->names) |
177 | loc->names = cupsArrayNew3(NULL, NULL, NULL, 0, | |
178 | (cups_acopy_func_t)_cupsStrAlloc, | |
179 | (cups_afree_func_t)_cupsStrFree); | |
ef416fc2 | 180 | |
10d09e33 | 181 | if (!cupsArrayAdd(loc->names, name)) |
ef416fc2 | 182 | { |
183 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
184 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 185 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 186 | return; |
187 | } | |
ef416fc2 | 188 | } |
189 | ||
190 | ||
191 | /* | |
10d09e33 | 192 | * 'cupsdAddNameMask()' - Add a host or interface name authorization mask. |
ef416fc2 | 193 | */ |
194 | ||
10d09e33 MS |
195 | int /* O - 1 on success, 0 on failure */ |
196 | cupsdAddNameMask(cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
197 | char *name) /* I - Host or interface name */ | |
ef416fc2 | 198 | { |
10d09e33 | 199 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 200 | char ifname[32], /* Interface name */ |
201 | *ifptr; /* Pointer to end of name */ | |
202 | ||
203 | ||
10d09e33 MS |
204 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
205 | "cupsdAddNameMask(masks=%p(%p), name=\"%s\")", | |
206 | masks, *masks, name); | |
ef416fc2 | 207 | |
88f9aafc | 208 | if (!_cups_strcasecmp(name, "@LOCAL")) |
ef416fc2 | 209 | { |
210 | /* | |
10d09e33 | 211 | * Deny *interface*... |
ef416fc2 | 212 | */ |
213 | ||
10d09e33 MS |
214 | temp.type = CUPSD_AUTH_INTERFACE; |
215 | temp.mask.name.name = (char *)"*"; | |
ef416fc2 | 216 | } |
88f9aafc | 217 | else if (!_cups_strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 218 | { |
219 | /* | |
10d09e33 | 220 | * Deny *interface*... |
ef416fc2 | 221 | */ |
222 | ||
223 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
224 | ||
10d09e33 | 225 | ifptr = ifname + strlen(ifname) - 1; |
ef416fc2 | 226 | |
10d09e33 | 227 | if (ifptr >= ifname && *ifptr == ')') |
ef416fc2 | 228 | { |
229 | ifptr --; | |
230 | *ifptr = '\0'; | |
231 | } | |
232 | ||
10d09e33 MS |
233 | temp.type = CUPSD_AUTH_INTERFACE; |
234 | temp.mask.name.name = ifname; | |
ef416fc2 | 235 | } |
236 | else | |
237 | { | |
238 | /* | |
10d09e33 | 239 | * Deny name... |
ef416fc2 | 240 | */ |
241 | ||
10d09e33 MS |
242 | if (*name == '*') |
243 | name ++; | |
ef416fc2 | 244 | |
10d09e33 MS |
245 | temp.type = CUPSD_AUTH_NAME; |
246 | temp.mask.name.name = (char *)name; | |
247 | } | |
ef416fc2 | 248 | |
10d09e33 MS |
249 | /* |
250 | * Set the name length... | |
251 | */ | |
ef416fc2 | 252 | |
10d09e33 | 253 | temp.mask.name.length = strlen(temp.mask.name.name); |
ef416fc2 | 254 | |
10d09e33 MS |
255 | /* |
256 | * Create the masks array as needed and add... | |
257 | */ | |
ef416fc2 | 258 | |
10d09e33 MS |
259 | if (!*masks) |
260 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
261 | (cups_acopy_func_t)copy_authmask, | |
262 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 263 | |
10d09e33 | 264 | return (cupsArrayAdd(*masks, &temp)); |
ef416fc2 | 265 | } |
266 | ||
267 | ||
268 | /* | |
269 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
270 | */ | |
271 | ||
272 | void | |
273 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
274 | { | |
275 | int type; /* Authentication type */ | |
f7deaa1a | 276 | const char *authorization; /* Pointer into Authorization string */ |
277 | char *ptr, /* Pointer into string */ | |
3e7fe0ca MS |
278 | username[HTTP_MAX_VALUE], |
279 | /* Username string */ | |
280 | password[HTTP_MAX_VALUE]; | |
281 | /* Password string */ | |
db0bd74a | 282 | cupsd_cert_t *localuser; /* Certificate username */ |
ef416fc2 | 283 | |
284 | ||
285 | /* | |
286 | * Locate the best matching location so we know what kind of | |
287 | * authentication to expect... | |
288 | */ | |
289 | ||
996acce8 | 290 | con->best = cupsdFindBest(con->uri, httpGetState(con->http)); |
5bd77a73 | 291 | con->type = CUPSD_AUTH_NONE; |
ef416fc2 | 292 | |
293 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
dcb445bc | 294 | "[Client %d] con->uri=\"%s\", con->best=%p(%s)", |
996acce8 | 295 | con->number, con->uri, con->best, |
dcb445bc | 296 | con->best ? con->best->location : ""); |
ef416fc2 | 297 | |
5bd77a73 | 298 | if (con->best && con->best->type != CUPSD_AUTH_NONE) |
7ff4fea9 | 299 | { |
5bd77a73 | 300 | if (con->best->type == CUPSD_AUTH_DEFAULT) |
dcb445bc | 301 | type = cupsdDefaultAuthType(); |
7ff4fea9 MS |
302 | else |
303 | type = con->best->type; | |
304 | } | |
ef416fc2 | 305 | else |
dcb445bc | 306 | type = cupsdDefaultAuthType(); |
ef416fc2 | 307 | |
308 | /* | |
309 | * Decode the Authorization string... | |
310 | */ | |
311 | ||
996acce8 | 312 | authorization = httpGetField(con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 313 | |
dcb445bc | 314 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "[Client %d] Authorization=\"%s\"", |
996acce8 | 315 | con->number, authorization); |
ef416fc2 | 316 | |
317 | username[0] = '\0'; | |
318 | password[0] = '\0'; | |
319 | ||
07ed0e9a MS |
320 | #ifdef HAVE_GSSAPI |
321 | con->gss_uid = 0; | |
322 | #endif /* HAVE_GSSAPI */ | |
323 | ||
f7deaa1a | 324 | #ifdef HAVE_AUTHORIZATION_H |
325 | if (con->authref) | |
326 | { | |
327 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
328 | con->authref = NULL; | |
329 | } | |
330 | #endif /* HAVE_AUTHORIZATION_H */ | |
331 | ||
2fb76298 | 332 | if (!*authorization) |
ef416fc2 | 333 | { |
334 | /* | |
335 | * No authorization data provided, return early... | |
336 | */ | |
337 | ||
338 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
dcb445bc | 339 | "[Client %d] No authentication data provided.", |
996acce8 | 340 | con->number); |
ef416fc2 | 341 | return; |
342 | } | |
f7deaa1a | 343 | #ifdef HAVE_AUTHORIZATION_H |
c8fef167 | 344 | else if (!strncmp(authorization, "AuthRef ", 8) && |
5ec1fd3d | 345 | httpAddrLocalhost(httpGetAddress(con->http))) |
f7deaa1a | 346 | { |
347 | OSStatus status; /* Status */ | |
e0660879 MS |
348 | char authdata[HTTP_MAX_VALUE]; |
349 | /* Nonce value from client */ | |
f7deaa1a | 350 | int authlen; /* Auth string length */ |
351 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
352 | ||
353 | /* | |
354 | * Get the Authorization Services data... | |
355 | */ | |
356 | ||
c8fef167 | 357 | authorization += 8; |
f7deaa1a | 358 | while (isspace(*authorization & 255)) |
359 | authorization ++; | |
360 | ||
e0660879 MS |
361 | authlen = sizeof(authdata); |
362 | httpDecode64_2(authdata, &authlen, authorization); | |
f7deaa1a | 363 | |
364 | if (authlen != kAuthorizationExternalFormLength) | |
365 | { | |
366 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 367 | "[Client %d] External Authorization reference size is " |
996acce8 | 368 | "incorrect.", con->number); |
f7deaa1a | 369 | return; |
370 | } | |
371 | ||
e0660879 | 372 | if ((status = AuthorizationCreateFromExternalForm((AuthorizationExternalForm *)authdata, &con->authref)) != 0) |
f7deaa1a | 373 | { |
374 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 375 | "[Client %d] AuthorizationCreateFromExternalForm " |
996acce8 | 376 | "returned %d (%s)", con->number, (int)status, |
dcb445bc | 377 | cssmErrorString(status)); |
f7deaa1a | 378 | return; |
379 | } | |
380 | ||
c8fef167 | 381 | username[0] = '\0'; |
ed6e7faf | 382 | |
c8fef167 | 383 | if (!AuthorizationCopyInfo(con->authref, kAuthorizationEnvironmentUsername, |
bf3816c7 | 384 | &authinfo)) |
e4572d57 | 385 | { |
ed6e7faf MS |
386 | if (authinfo->count == 1 && authinfo->items[0].value && |
387 | authinfo->items[0].valueLength >= 2) | |
c8fef167 | 388 | { |
ed6e7faf MS |
389 | strlcpy(username, authinfo->items[0].value, sizeof(username)); |
390 | ||
c8fef167 | 391 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
dcb445bc | 392 | "[Client %d] Authorized as \"%s\" using AuthRef", |
996acce8 | 393 | con->number, username); |
c8fef167 MS |
394 | } |
395 | ||
e4572d57 | 396 | AuthorizationFreeItemSet(authinfo); |
e4572d57 | 397 | } |
355e94dc | 398 | |
c8fef167 MS |
399 | if (!username[0]) |
400 | { | |
401 | /* | |
402 | * No username in AuthRef, grab username using peer credentials... | |
403 | */ | |
404 | ||
405 | struct passwd *pwd; /* Password entry for this user */ | |
406 | cupsd_ucred_t peercred; /* Peer credentials */ | |
407 | socklen_t peersize; /* Size of peer credentials */ | |
408 | ||
409 | peersize = sizeof(peercred); | |
410 | ||
996acce8 | 411 | if (getsockopt(httpGetFd(con->http), 0, LOCAL_PEERCRED, &peercred, &peersize)) |
c8fef167 | 412 | { |
dcb445bc MS |
413 | cupsdLogMessage(CUPSD_LOG_ERROR, |
414 | "[Client %d] Unable to get peer credentials - %s", | |
996acce8 | 415 | con->number, strerror(errno)); |
c8fef167 MS |
416 | return; |
417 | } | |
418 | ||
419 | if ((pwd = getpwuid(CUPSD_UCRED_UID(peercred))) == NULL) | |
420 | { | |
421 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 422 | "[Client %d] Unable to find UID %d for peer " |
996acce8 | 423 | "credentials.", con->number, |
c8fef167 MS |
424 | (int)CUPSD_UCRED_UID(peercred)); |
425 | return; | |
426 | } | |
427 | ||
428 | strlcpy(username, pwd->pw_name, sizeof(username)); | |
429 | ||
430 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
dcb445bc | 431 | "[Client %d] Authorized as \"%s\" using " |
996acce8 | 432 | "AuthRef + PeerCred", con->number, username); |
c8fef167 MS |
433 | } |
434 | ||
5bd77a73 | 435 | con->type = CUPSD_AUTH_BASIC; |
f7deaa1a | 436 | } |
437 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 438 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
439 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
0d40cb1e | 440 | con->http->hostaddr->addr.sa_family == AF_LOCAL && con->best) |
bc44d920 | 441 | { |
442 | /* | |
443 | * Use peer credentials from domain socket connection... | |
444 | */ | |
445 | ||
446 | struct passwd *pwd; /* Password entry for this user */ | |
447 | cupsd_ucred_t peercred; /* Peer credentials */ | |
448 | socklen_t peersize; /* Size of peer credentials */ | |
f14324a7 MS |
449 | #ifdef HAVE_AUTHORIZATION_H |
450 | const char *name; /* Authorizing name */ | |
6961465f MS |
451 | int no_peer = 0; /* Don't allow peer credentials? */ |
452 | ||
453 | /* | |
454 | * See if we should allow peer credentials... | |
455 | */ | |
bc44d920 | 456 | |
f14324a7 MS |
457 | for (name = (char *)cupsArrayFirst(con->best->names); |
458 | name; | |
459 | name = (char *)cupsArrayNext(con->best->names)) | |
6961465f | 460 | { |
dcb445bc MS |
461 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9) || |
462 | !_cups_strcasecmp(name, "@SYSTEM")) | |
f14324a7 | 463 | { |
6961465f MS |
464 | /* Normally don't want peer credentials if we need an auth key... */ |
465 | no_peer = 1; | |
466 | } | |
467 | else if (!_cups_strcasecmp(name, "@OWNER")) | |
468 | { | |
469 | /* but if @OWNER is present then we allow it... */ | |
470 | no_peer = 0; | |
471 | break; | |
f14324a7 | 472 | } |
6961465f MS |
473 | } |
474 | ||
475 | if (no_peer) | |
476 | { | |
477 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
478 | "[Client %d] PeerCred authentication not allowed for " | |
996acce8 | 479 | "resource per AUTHKEY policy.", con->number); |
6961465f MS |
480 | return; |
481 | } | |
f14324a7 | 482 | #endif /* HAVE_AUTHORIZATION_H */ |
bc44d920 | 483 | |
484 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
485 | { | |
dcb445bc | 486 | cupsdLogMessage(CUPSD_LOG_ERROR, |
996acce8 | 487 | "[Client %d] User \"%s\" does not exist.", con->number, |
bc44d920 | 488 | authorization + 9); |
489 | return; | |
490 | } | |
491 | ||
492 | peersize = sizeof(peercred); | |
493 | ||
f11a948a | 494 | # ifdef __APPLE__ |
996acce8 | 495 | if (getsockopt(httpGetFd(con->http), 0, LOCAL_PEERCRED, &peercred, &peersize)) |
f11a948a | 496 | # else |
996acce8 | 497 | if (getsockopt(httpGetFd(con->http), SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) |
f11a948a | 498 | # endif /* __APPLE__ */ |
bc44d920 | 499 | { |
dcb445bc MS |
500 | cupsdLogMessage(CUPSD_LOG_ERROR, |
501 | "[Client %d] Unable to get peer credentials - %s", | |
996acce8 | 502 | con->number, strerror(errno)); |
bc44d920 | 503 | return; |
504 | } | |
505 | ||
506 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
507 | { | |
508 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 509 | "[Client %d] Invalid peer credentials for \"%s\" - got " |
996acce8 | 510 | "%d, expected %d!", con->number, authorization + 9, |
bc44d920 | 511 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); |
512 | # ifdef HAVE_SYS_UCRED_H | |
dcb445bc | 513 | cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] cr_version=%d", |
996acce8 | 514 | con->number, peercred.cr_version); |
dcb445bc | 515 | cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] cr_uid=%d", |
996acce8 | 516 | con->number, peercred.cr_uid); |
dcb445bc | 517 | cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] cr_ngroups=%d", |
996acce8 | 518 | con->number, peercred.cr_ngroups); |
dcb445bc | 519 | cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] cr_groups[0]=%d", |
996acce8 | 520 | con->number, peercred.cr_groups[0]); |
bc44d920 | 521 | # endif /* HAVE_SYS_UCRED_H */ |
522 | return; | |
523 | } | |
524 | ||
525 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc | 526 | |
eac3a0a0 MS |
527 | # ifdef HAVE_GSSAPI |
528 | con->gss_uid = CUPSD_UCRED_UID(peercred); | |
529 | # endif /* HAVE_GSSAPI */ | |
530 | ||
355e94dc | 531 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
996acce8 | 532 | "[Client %d] Authorized as %s using PeerCred", con->number, |
355e94dc | 533 | username); |
2fb76298 | 534 | |
5bd77a73 | 535 | con->type = CUPSD_AUTH_BASIC; |
bc44d920 | 536 | } |
537 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 538 | else if (!strncmp(authorization, "Local", 5) && |
5ec1fd3d | 539 | httpAddrLocalhost(httpGetAddress(con->http))) |
ef416fc2 | 540 | { |
541 | /* | |
542 | * Get Local certificate authentication data... | |
543 | */ | |
544 | ||
545 | authorization += 5; | |
80ca4592 | 546 | while (isspace(*authorization & 255)) |
ef416fc2 | 547 | authorization ++; |
548 | ||
0fa6c7fa | 549 | if ((localuser = cupsdFindCert(authorization)) == NULL) |
ef416fc2 | 550 | { |
551 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 552 | "[Client %d] Local authentication certificate not found.", |
996acce8 | 553 | con->number); |
ef416fc2 | 554 | return; |
555 | } | |
2fb76298 | 556 | |
0fa6c7fa MS |
557 | strlcpy(username, localuser->username, sizeof(username)); |
558 | con->type = localuser->type; | |
559 | ||
560 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
996acce8 | 561 | "[Client %d] Authorized as %s using Local", con->number, |
0fa6c7fa | 562 | username); |
ef416fc2 | 563 | } |
2fb76298 | 564 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 565 | { |
566 | /* | |
567 | * Get the Basic authentication data... | |
568 | */ | |
569 | ||
570 | int userlen; /* Username:password length */ | |
571 | ||
572 | ||
573 | authorization += 5; | |
80ca4592 | 574 | while (isspace(*authorization & 255)) |
ef416fc2 | 575 | authorization ++; |
576 | ||
577 | userlen = sizeof(username); | |
578 | httpDecode64_2(username, &userlen, authorization); | |
579 | ||
580 | /* | |
581 | * Pull the username and password out... | |
582 | */ | |
583 | ||
584 | if ((ptr = strchr(username, ':')) == NULL) | |
585 | { | |
dcb445bc | 586 | cupsdLogMessage(CUPSD_LOG_ERROR, "[Client %d] Missing Basic password.", |
996acce8 | 587 | con->number); |
ef416fc2 | 588 | return; |
589 | } | |
590 | ||
591 | *ptr++ = '\0'; | |
592 | ||
593 | if (!username[0]) | |
594 | { | |
595 | /* | |
596 | * Username must not be empty... | |
597 | */ | |
598 | ||
dcb445bc | 599 | cupsdLogMessage(CUPSD_LOG_ERROR, "[Client %d] Empty Basic username.", |
996acce8 | 600 | con->number); |
ef416fc2 | 601 | return; |
602 | } | |
603 | ||
604 | if (!*ptr) | |
605 | { | |
606 | /* | |
607 | * Password must not be empty... | |
608 | */ | |
609 | ||
dcb445bc | 610 | cupsdLogMessage(CUPSD_LOG_ERROR, "[Client %d] Empty Basic password.", |
996acce8 | 611 | con->number); |
ef416fc2 | 612 | return; |
613 | } | |
614 | ||
615 | strlcpy(password, ptr, sizeof(password)); | |
616 | ||
617 | /* | |
618 | * Validate the username and password... | |
619 | */ | |
620 | ||
621 | switch (type) | |
622 | { | |
2fb76298 | 623 | default : |
5bd77a73 | 624 | case CUPSD_AUTH_BASIC : |
ef416fc2 | 625 | { |
626 | #if HAVE_LIBPAM | |
627 | /* | |
628 | * Only use PAM to do authentication. This supports MD5 | |
629 | * passwords, among other things... | |
630 | */ | |
631 | ||
632 | pam_handle_t *pamh; /* PAM authentication handle */ | |
633 | int pamerr; /* PAM error code */ | |
634 | struct pam_conv pamdata;/* PAM conversation data */ | |
635 | cupsd_authdata_t data; /* Authentication data */ | |
636 | ||
637 | ||
638 | strlcpy(data.username, username, sizeof(data.username)); | |
639 | strlcpy(data.password, password, sizeof(data.password)); | |
640 | ||
5a1d7a17 | 641 | # ifdef __sun |
e1d6a774 | 642 | pamdata.conv = (int (*)(int, struct pam_message **, |
643 | struct pam_response **, | |
644 | void *))pam_func; | |
645 | # else | |
ef416fc2 | 646 | pamdata.conv = pam_func; |
5a1d7a17 | 647 | # endif /* __sun */ |
ef416fc2 | 648 | pamdata.appdata_ptr = &data; |
649 | ||
ef416fc2 | 650 | pamerr = pam_start("cups", username, &pamdata, &pamh); |
651 | if (pamerr != PAM_SUCCESS) | |
652 | { | |
653 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 654 | "[Client %d] pam_start() returned %d (%s)", |
996acce8 | 655 | con->number, pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 656 | return; |
657 | } | |
658 | ||
ee571f26 MS |
659 | # ifdef HAVE_PAM_SET_ITEM |
660 | # ifdef PAM_RHOST | |
996acce8 | 661 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http->hostname); |
a4924f6c MS |
662 | if (pamerr != PAM_SUCCESS) |
663 | cupsdLogMessage(CUPSD_LOG_WARN, | |
dcb445bc | 664 | "[Client %d] pam_set_item(PAM_RHOST) " |
996acce8 | 665 | "returned %d (%s)", con->number, pamerr, |
ee571f26 MS |
666 | pam_strerror(pamh, pamerr)); |
667 | # endif /* PAM_RHOST */ | |
668 | ||
669 | # ifdef PAM_TTY | |
670 | pamerr = pam_set_item(pamh, PAM_TTY, "cups"); | |
671 | if (pamerr != PAM_SUCCESS) | |
672 | cupsdLogMessage(CUPSD_LOG_WARN, | |
dcb445bc | 673 | "[Client %d] pam_set_item(PAM_TTY) " |
996acce8 | 674 | "returned %d (%s)!", con->number, pamerr, |
ee571f26 MS |
675 | pam_strerror(pamh, pamerr)); |
676 | # endif /* PAM_TTY */ | |
677 | # endif /* HAVE_PAM_SET_ITEM */ | |
678 | ||
ef416fc2 | 679 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
680 | if (pamerr != PAM_SUCCESS) | |
681 | { | |
682 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 683 | "[Client %d] pam_authenticate() returned %d (%s)", |
996acce8 | 684 | con->number, pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 685 | pam_end(pamh, 0); |
686 | return; | |
687 | } | |
688 | ||
94da7e34 MS |
689 | # ifdef HAVE_PAM_SETCRED |
690 | pamerr = pam_setcred(pamh, PAM_ESTABLISH_CRED | PAM_SILENT); | |
691 | if (pamerr != PAM_SUCCESS) | |
692 | cupsdLogMessage(CUPSD_LOG_WARN, | |
dcb445bc | 693 | "[Client %d] pam_setcred() returned %d (%s)", |
996acce8 | 694 | con->number, pamerr, |
94da7e34 MS |
695 | pam_strerror(pamh, pamerr)); |
696 | # endif /* HAVE_PAM_SETCRED */ | |
697 | ||
ef416fc2 | 698 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); |
699 | if (pamerr != PAM_SUCCESS) | |
700 | { | |
701 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 702 | "[Client %d] pam_acct_mgmt() returned %d (%s)", |
996acce8 | 703 | con->number, pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 704 | pam_end(pamh, 0); |
705 | return; | |
706 | } | |
707 | ||
708 | pam_end(pamh, PAM_SUCCESS); | |
709 | ||
ef416fc2 | 710 | #else |
711 | /* | |
712 | * Use normal UNIX password file-based authentication... | |
713 | */ | |
714 | ||
715 | char *pass; /* Encrypted password */ | |
716 | struct passwd *pw; /* User password data */ | |
717 | # ifdef HAVE_SHADOW_H | |
718 | struct spwd *spw; /* Shadow password data */ | |
719 | # endif /* HAVE_SHADOW_H */ | |
720 | ||
721 | ||
722 | pw = getpwnam(username); /* Get the current password */ | |
723 | endpwent(); /* Close the password file */ | |
724 | ||
725 | if (!pw) | |
726 | { | |
727 | /* | |
728 | * No such user... | |
729 | */ | |
730 | ||
731 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 732 | "[Client %d] Unknown username \"%s\".", |
996acce8 | 733 | con->number, username); |
80ca4592 | 734 | return; |
ef416fc2 | 735 | } |
736 | ||
737 | # ifdef HAVE_SHADOW_H | |
738 | spw = getspnam(username); | |
739 | endspent(); | |
740 | ||
741 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
742 | { | |
743 | /* | |
744 | * Don't allow blank passwords! | |
745 | */ | |
746 | ||
747 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 748 | "[Client %d] Username \"%s\" has no shadow " |
996acce8 | 749 | "password.", con->number, username); |
ef416fc2 | 750 | return; |
751 | } | |
752 | ||
753 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
754 | # else | |
755 | if (!pw->pw_passwd[0]) | |
756 | # endif /* HAVE_SHADOW_H */ | |
757 | { | |
758 | /* | |
759 | * Don't allow blank passwords! | |
760 | */ | |
761 | ||
762 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
82cc1f9a | 763 | "[Client %d] Username \"%s\" has no password.", |
996acce8 | 764 | con->number, username); |
ef416fc2 | 765 | return; |
766 | } | |
767 | ||
768 | /* | |
769 | * OK, the password isn't blank, so compare with what came from the | |
770 | * client... | |
771 | */ | |
772 | ||
773 | pass = cups_crypt(password, pw->pw_passwd); | |
774 | ||
775 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
dcb445bc | 776 | "[Client %d] pw_passwd=\"%s\", crypt=\"%s\"", |
996acce8 | 777 | con->number, pw->pw_passwd, pass); |
ef416fc2 | 778 | |
779 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
780 | { | |
781 | # ifdef HAVE_SHADOW_H | |
782 | if (spw) | |
783 | { | |
784 | pass = cups_crypt(password, spw->sp_pwdp); | |
785 | ||
786 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
dcb445bc | 787 | "[Client %d] sp_pwdp=\"%s\", crypt=\"%s\"", |
996acce8 | 788 | con->number, spw->sp_pwdp, pass); |
ef416fc2 | 789 | |
790 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
791 | { | |
792 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 793 | "[Client %d] Authentication failed for user " |
996acce8 | 794 | "\"%s\".", con->number, username); |
ef416fc2 | 795 | return; |
796 | } | |
797 | } | |
798 | else | |
799 | # endif /* HAVE_SHADOW_H */ | |
800 | { | |
801 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
dcb445bc | 802 | "[Client %d] Authentication failed for user " |
996acce8 | 803 | "\"%s\".", con->number, username); |
ef416fc2 | 804 | return; |
805 | } | |
806 | } | |
807 | #endif /* HAVE_LIBPAM */ | |
808 | } | |
355e94dc MS |
809 | |
810 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
dcb445bc | 811 | "[Client %d] Authorized as %s using Basic", |
996acce8 | 812 | con->number, username); |
ef416fc2 | 813 | break; |
ef416fc2 | 814 | } |
2fb76298 MS |
815 | |
816 | con->type = type; | |
ef416fc2 | 817 | } |
f7deaa1a | 818 | #ifdef HAVE_GSSAPI |
c8fef167 | 819 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 820 | { |
821 | int len; /* Length of authorization string */ | |
f7deaa1a | 822 | gss_ctx_id_t context; /* Authorization context */ |
823 | OM_uint32 major_status, /* Major status code */ | |
824 | minor_status; /* Minor status code */ | |
825 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
826 | /* Input token from string */ | |
827 | output_token = GSS_C_EMPTY_BUFFER; | |
828 | /* Output token for username */ | |
829 | gss_name_t client_name; /* Client name */ | |
830 | ||
831 | ||
f42414bf | 832 | # ifdef __APPLE__ |
833 | /* | |
834 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
835 | * to use it... | |
836 | */ | |
837 | ||
838 | if (gss_init_sec_context == NULL) | |
839 | { | |
840 | cupsdLogMessage(CUPSD_LOG_WARN, | |
dcb445bc MS |
841 | "[Client %d] GSSAPI/Kerberos authentication failed " |
842 | "because the Kerberos framework is not present.", | |
996acce8 | 843 | con->number); |
f42414bf | 844 | return; |
845 | } | |
846 | # endif /* __APPLE__ */ | |
847 | ||
f7deaa1a | 848 | /* |
849 | * Find the start of the Kerberos input token... | |
850 | */ | |
851 | ||
852 | authorization += 9; | |
853 | while (isspace(*authorization & 255)) | |
854 | authorization ++; | |
855 | ||
856 | if (!*authorization) | |
857 | { | |
858 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
dcb445bc | 859 | "[Client %d] No authentication data specified.", |
996acce8 | 860 | con->number); |
f7deaa1a | 861 | return; |
862 | } | |
863 | ||
f7deaa1a | 864 | /* |
865 | * Decode the authorization string to get the input token... | |
866 | */ | |
867 | ||
7e86f2f6 MS |
868 | len = (int)strlen(authorization); |
869 | input_token.value = malloc((size_t)len); | |
f7deaa1a | 870 | input_token.value = httpDecode64_2(input_token.value, &len, |
c7017ecc | 871 | authorization); |
7e86f2f6 | 872 | input_token.length = (size_t)len; |
f7deaa1a | 873 | |
874 | /* | |
875 | * Accept the input token to get the authorization info... | |
876 | */ | |
877 | ||
878 | context = GSS_C_NO_CONTEXT; | |
879 | client_name = GSS_C_NO_NAME; | |
880 | major_status = gss_accept_sec_context(&minor_status, | |
881 | &context, | |
dcb445bc | 882 | ServerCreds, |
f7deaa1a | 883 | &input_token, |
884 | GSS_C_NO_CHANNEL_BINDINGS, | |
885 | &client_name, | |
886 | NULL, | |
07ed0e9a MS |
887 | &output_token, |
888 | NULL, | |
f7deaa1a | 889 | NULL, |
07ed0e9a MS |
890 | NULL); |
891 | ||
892 | if (output_token.length > 0) | |
893 | gss_release_buffer(&minor_status, &output_token); | |
f7deaa1a | 894 | |
895 | if (GSS_ERROR(major_status)) | |
896 | { | |
897 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
dcb445bc | 898 | "[Client %d] Error accepting GSSAPI security context", |
996acce8 | 899 | con->number); |
f7deaa1a | 900 | |
901 | if (context != GSS_C_NO_CONTEXT) | |
902 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 903 | return; |
904 | } | |
905 | ||
97c9a8d7 MS |
906 | con->have_gss = 1; |
907 | ||
76cd9e37 MS |
908 | /* |
909 | * Get the username associated with the client's credentials... | |
f7deaa1a | 910 | */ |
911 | ||
355e94dc MS |
912 | if (major_status == GSS_S_CONTINUE_NEEDED) |
913 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
996acce8 | 914 | "[Client %d] Credentials not complete", con->number); |
355e94dc | 915 | else if (major_status == GSS_S_COMPLETE) |
f7deaa1a | 916 | { |
c8fef167 | 917 | major_status = gss_display_name(&minor_status, client_name, |
f7deaa1a | 918 | &output_token, NULL); |
919 | ||
920 | if (GSS_ERROR(major_status)) | |
921 | { | |
922 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
996acce8 | 923 | "[Client %d] Error getting username", con->number); |
f7deaa1a | 924 | gss_release_name(&minor_status, &client_name); |
925 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 926 | return; |
927 | } | |
928 | ||
f7deaa1a | 929 | strlcpy(username, output_token.value, sizeof(username)); |
355e94dc MS |
930 | |
931 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
dcb445bc | 932 | "[Client %d] Authorized as %s using Negotiate", |
996acce8 | 933 | con->number, username); |
f7deaa1a | 934 | |
e07d4801 | 935 | gss_release_name(&minor_status, &client_name); |
f7deaa1a | 936 | gss_release_buffer(&minor_status, &output_token); |
2fb76298 | 937 | |
5bd77a73 | 938 | con->type = CUPSD_AUTH_NEGOTIATE; |
f7deaa1a | 939 | } |
e07d4801 MS |
940 | |
941 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
07ed0e9a MS |
942 | |
943 | # if defined(SO_PEERCRED) && defined(AF_LOCAL) | |
944 | /* | |
945 | * Get the client's UID if we are printing locally - that allows a backend | |
946 | * to run as the correct user to get Kerberos credentials of its own. | |
947 | */ | |
948 | ||
5ec1fd3d | 949 | if (httpAddrFamily(con->http->hostaddr) == AF_LOCAL) |
07ed0e9a MS |
950 | { |
951 | cupsd_ucred_t peercred; /* Peer credentials */ | |
952 | socklen_t peersize; /* Size of peer credentials */ | |
953 | ||
954 | peersize = sizeof(peercred); | |
955 | ||
956 | # ifdef __APPLE__ | |
996acce8 | 957 | if (getsockopt(httpGetFd(con->http), 0, LOCAL_PEERCRED, &peercred, &peersize)) |
07ed0e9a | 958 | # else |
996acce8 | 959 | if (getsockopt(httpGetFd(con->http), SOL_SOCKET, SO_PEERCRED, &peercred, |
07ed0e9a MS |
960 | &peersize)) |
961 | # endif /* __APPLE__ */ | |
962 | { | |
dcb445bc MS |
963 | cupsdLogMessage(CUPSD_LOG_ERROR, |
964 | "[Client %d] Unable to get peer credentials - %s", | |
996acce8 | 965 | con->number, strerror(errno)); |
07ed0e9a MS |
966 | } |
967 | else | |
968 | { | |
969 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
dcb445bc | 970 | "[Client %d] Using credentials for UID %d.", |
996acce8 | 971 | con->number, CUPSD_UCRED_UID(peercred)); |
07ed0e9a MS |
972 | con->gss_uid = CUPSD_UCRED_UID(peercred); |
973 | } | |
974 | } | |
975 | # endif /* SO_PEERCRED && AF_LOCAL */ | |
f7deaa1a | 976 | } |
977 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 978 | else |
ef416fc2 | 979 | { |
355e94dc | 980 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
981 | |
982 | ||
983 | if (sscanf(authorization, "%255s", scheme) != 1) | |
5a9febac | 984 | strlcpy(scheme, "UNKNOWN", sizeof(scheme)); |
355e94dc | 985 | |
dcb445bc MS |
986 | cupsdLogMessage(CUPSD_LOG_ERROR, |
987 | "[Client %d] Bad authentication data \"%s ...\"", | |
996acce8 | 988 | con->number, scheme); |
ef416fc2 | 989 | return; |
990 | } | |
991 | ||
992 | /* | |
993 | * If we get here, then we were able to validate the username and | |
994 | * password - copy the validated username and password to the client | |
995 | * data and return... | |
996 | */ | |
997 | ||
998 | strlcpy(con->username, username, sizeof(con->username)); | |
999 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1000 | } |
1001 | ||
1002 | ||
080811b1 MS |
1003 | /* |
1004 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
1005 | * access a location. | |
1006 | */ | |
1007 | ||
1008 | int /* O - 1 if allowed, 0 otherwise */ | |
1009 | cupsdCheckAccess( | |
1010 | unsigned ip[4], /* I - Client address */ | |
5ec1fd3d | 1011 | const char *name, /* I - Client hostname */ |
7e86f2f6 | 1012 | size_t namelen, /* I - Length of hostname */ |
080811b1 MS |
1013 | cupsd_location_t *loc) /* I - Location to check */ |
1014 | { | |
1015 | int allow; /* 1 if allowed, 0 otherwise */ | |
1016 | ||
1017 | ||
88f9aafc | 1018 | if (!_cups_strcasecmp(name, "localhost")) |
080811b1 MS |
1019 | { |
1020 | /* | |
1021 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
1022 | */ | |
1023 | ||
1024 | return (1); | |
1025 | } | |
1026 | else | |
1027 | { | |
1028 | /* | |
1029 | * Do authorization checks on the domain/address... | |
1030 | */ | |
1031 | ||
1032 | switch (loc->order_type) | |
1033 | { | |
1034 | default : | |
1035 | allow = 0; /* anti-compiler-warning-code */ | |
1036 | break; | |
1037 | ||
5bd77a73 | 1038 | case CUPSD_AUTH_ALLOW : /* Order Deny,Allow */ |
080811b1 MS |
1039 | allow = 1; |
1040 | ||
10d09e33 | 1041 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
1042 | allow = 0; |
1043 | ||
10d09e33 | 1044 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
1045 | allow = 1; |
1046 | break; | |
1047 | ||
5bd77a73 | 1048 | case CUPSD_AUTH_DENY : /* Order Allow,Deny */ |
080811b1 MS |
1049 | allow = 0; |
1050 | ||
10d09e33 | 1051 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
1052 | allow = 1; |
1053 | ||
10d09e33 | 1054 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
1055 | allow = 0; |
1056 | break; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | return (allow); | |
1061 | } | |
1062 | ||
1063 | ||
ef416fc2 | 1064 | /* |
1065 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1066 | */ | |
1067 | ||
1068 | int /* O - 1 if mask matches, 0 otherwise */ | |
10d09e33 | 1069 | cupsdCheckAuth(unsigned ip[4], /* I - Client address */ |
5ec1fd3d | 1070 | const char *name, /* I - Client hostname */ |
7e86f2f6 | 1071 | size_t name_len, /* I - Length of hostname */ |
10d09e33 | 1072 | cups_array_t *masks) /* I - Masks */ |
ef416fc2 | 1073 | { |
10d09e33 MS |
1074 | int i; /* Looping var */ |
1075 | cupsd_authmask_t *mask; /* Current mask */ | |
1076 | cupsd_netif_t *iface; /* Network interface */ | |
1077 | unsigned netip4; /* IPv4 network address */ | |
ef416fc2 | 1078 | #ifdef AF_INET6 |
10d09e33 | 1079 | unsigned netip6[4]; /* IPv6 network address */ |
ef416fc2 | 1080 | #endif /* AF_INET6 */ |
1081 | ||
e07d4801 | 1082 | |
10d09e33 MS |
1083 | for (mask = (cupsd_authmask_t *)cupsArrayFirst(masks); |
1084 | mask; | |
1085 | mask = (cupsd_authmask_t *)cupsArrayNext(masks)) | |
ef416fc2 | 1086 | { |
10d09e33 | 1087 | switch (mask->type) |
ef416fc2 | 1088 | { |
5bd77a73 | 1089 | case CUPSD_AUTH_INTERFACE : |
ef416fc2 | 1090 | /* |
1091 | * Check for a match with a network interface... | |
1092 | */ | |
1093 | ||
1094 | netip4 = htonl(ip[3]); | |
1095 | ||
1096 | #ifdef AF_INET6 | |
1097 | netip6[0] = htonl(ip[0]); | |
1098 | netip6[1] = htonl(ip[1]); | |
1099 | netip6[2] = htonl(ip[2]); | |
1100 | netip6[3] = htonl(ip[3]); | |
1101 | #endif /* AF_INET6 */ | |
1102 | ||
84ec3a84 MS |
1103 | cupsdNetIFUpdate(); |
1104 | ||
10d09e33 | 1105 | if (!strcmp(mask->mask.name.name, "*")) |
ef416fc2 | 1106 | { |
e07d4801 MS |
1107 | #ifdef __APPLE__ |
1108 | /* | |
1109 | * Allow Back-to-My-Mac addresses... | |
1110 | */ | |
1111 | ||
1112 | if ((ip[0] & 0xff000000) == 0xfd000000) | |
1113 | return (1); | |
1114 | #endif /* __APPLE__ */ | |
1115 | ||
ef416fc2 | 1116 | /* |
1117 | * Check against all local interfaces... | |
1118 | */ | |
1119 | ||
e00b005a | 1120 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1121 | iface; | |
1122 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1123 | { |
1124 | /* | |
1125 | * Only check local interfaces... | |
1126 | */ | |
1127 | ||
1128 | if (!iface->is_local) | |
1129 | continue; | |
1130 | ||
1131 | if (iface->address.addr.sa_family == AF_INET) | |
1132 | { | |
1133 | /* | |
1134 | * Check IPv4 address... | |
1135 | */ | |
1136 | ||
1137 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1138 | (iface->address.ipv4.sin_addr.s_addr & | |
1139 | iface->mask.ipv4.sin_addr.s_addr)) | |
1140 | return (1); | |
1141 | } | |
1142 | #ifdef AF_INET6 | |
1143 | else | |
1144 | { | |
1145 | /* | |
1146 | * Check IPv6 address... | |
1147 | */ | |
1148 | ||
1149 | for (i = 0; i < 4; i ++) | |
1150 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1151 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1152 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1153 | break; | |
1154 | ||
1155 | if (i == 4) | |
1156 | return (1); | |
1157 | } | |
1158 | #endif /* AF_INET6 */ | |
1159 | } | |
1160 | } | |
1161 | else | |
1162 | { | |
1163 | /* | |
1164 | * Check the named interface... | |
1165 | */ | |
1166 | ||
e00b005a | 1167 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1168 | iface; |
e00b005a | 1169 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1170 | { |
10d09e33 | 1171 | if (strcmp(mask->mask.name.name, iface->name)) |
ed486911 | 1172 | continue; |
1173 | ||
ef416fc2 | 1174 | if (iface->address.addr.sa_family == AF_INET) |
1175 | { | |
1176 | /* | |
1177 | * Check IPv4 address... | |
1178 | */ | |
1179 | ||
1180 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1181 | (iface->address.ipv4.sin_addr.s_addr & | |
1182 | iface->mask.ipv4.sin_addr.s_addr)) | |
1183 | return (1); | |
1184 | } | |
1185 | #ifdef AF_INET6 | |
1186 | else | |
1187 | { | |
1188 | /* | |
1189 | * Check IPv6 address... | |
1190 | */ | |
1191 | ||
1192 | for (i = 0; i < 4; i ++) | |
1193 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1194 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1195 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1196 | break; | |
1197 | ||
1198 | if (i == 4) | |
1199 | return (1); | |
1200 | } | |
1201 | #endif /* AF_INET6 */ | |
1202 | } | |
1203 | } | |
1204 | break; | |
1205 | ||
5bd77a73 | 1206 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1207 | /* |
1208 | * Check for exact name match... | |
1209 | */ | |
1210 | ||
88f9aafc | 1211 | if (!_cups_strcasecmp(name, mask->mask.name.name)) |
ef416fc2 | 1212 | return (1); |
1213 | ||
1214 | /* | |
1215 | * Check for domain match... | |
1216 | */ | |
1217 | ||
10d09e33 MS |
1218 | if (name_len >= mask->mask.name.length && |
1219 | mask->mask.name.name[0] == '.' && | |
88f9aafc | 1220 | !_cups_strcasecmp(name + name_len - mask->mask.name.length, |
10d09e33 | 1221 | mask->mask.name.name)) |
ef416fc2 | 1222 | return (1); |
1223 | break; | |
1224 | ||
5bd77a73 | 1225 | case CUPSD_AUTH_IP : |
ef416fc2 | 1226 | /* |
1227 | * Check for IP/network address match... | |
1228 | */ | |
1229 | ||
1230 | for (i = 0; i < 4; i ++) | |
10d09e33 MS |
1231 | if ((ip[i] & mask->mask.ip.netmask[i]) != |
1232 | mask->mask.ip.address[i]) | |
ef416fc2 | 1233 | break; |
1234 | ||
1235 | if (i == 4) | |
1236 | return (1); | |
1237 | break; | |
1238 | } | |
ef416fc2 | 1239 | } |
1240 | ||
1241 | return (0); | |
1242 | } | |
1243 | ||
1244 | ||
1245 | /* | |
1246 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1247 | */ | |
1248 | ||
1249 | int /* O - 1 if user is a member, 0 otherwise */ | |
1250 | cupsdCheckGroup( | |
1251 | const char *username, /* I - User name */ | |
1252 | struct passwd *user, /* I - System user info */ | |
1253 | const char *groupname) /* I - Group name */ | |
1254 | { | |
8922323b MS |
1255 | int i; /* Looping var */ |
1256 | struct group *group; /* System group info */ | |
bd7854cb | 1257 | #ifdef HAVE_MBR_UID_TO_UUID |
8922323b MS |
1258 | uuid_t useruuid, /* UUID for username */ |
1259 | groupuuid; /* UUID for groupname */ | |
1260 | int is_member; /* True if user is a member of group */ | |
bd7854cb | 1261 | #endif /* HAVE_MBR_UID_TO_UUID */ |
ef416fc2 | 1262 | |
1263 | ||
1264 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1265 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1266 | username, user, groupname); | |
1267 | ||
1268 | /* | |
1269 | * Validate input... | |
1270 | */ | |
1271 | ||
1272 | if (!username || !groupname) | |
1273 | return (0); | |
1274 | ||
1275 | /* | |
1276 | * Check to see if the user is a member of the named group... | |
1277 | */ | |
1278 | ||
1279 | group = getgrnam(groupname); | |
1280 | endgrent(); | |
1281 | ||
1282 | if (group != NULL) | |
1283 | { | |
1284 | /* | |
1285 | * Group exists, check it... | |
1286 | */ | |
1287 | ||
1288 | for (i = 0; group->gr_mem[i]; i ++) | |
88f9aafc | 1289 | if (!_cups_strcasecmp(username, group->gr_mem[i])) |
ef416fc2 | 1290 | return (1); |
1291 | } | |
1292 | ||
1293 | /* | |
1294 | * Group doesn't exist or user not in group list, check the group ID | |
1295 | * against the user's group ID... | |
1296 | */ | |
1297 | ||
1298 | if (user && group && group->gr_gid == user->pw_gid) | |
1299 | return (1); | |
1300 | ||
bd7854cb | 1301 | #ifdef HAVE_MBR_UID_TO_UUID |
1302 | /* | |
1303 | * Check group membership through MacOS X membership API... | |
1304 | */ | |
1305 | ||
dd1abb6b | 1306 | if (user && !mbr_uid_to_uuid(user->pw_uid, useruuid)) |
c9fc04c6 | 1307 | { |
8922323b MS |
1308 | if (group) |
1309 | { | |
1310 | /* | |
1311 | * Map group name to UUID and check membership... | |
1312 | */ | |
c9fc04c6 | 1313 | |
8922323b MS |
1314 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) |
1315 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1316 | if (is_member) | |
1317 | return (1); | |
1318 | } | |
1319 | else if (groupname[0] == '#') | |
1320 | { | |
1321 | /* | |
1322 | * Use UUID directly and check for equality (user UUID) and | |
1323 | * membership (group UUID)... | |
1324 | */ | |
1325 | ||
1326 | if (!uuid_parse((char *)groupname + 1, groupuuid)) | |
1327 | { | |
1328 | if (!uuid_compare(useruuid, groupuuid)) | |
c9fc04c6 | 1329 | return (1); |
8922323b MS |
1330 | else if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1331 | if (is_member) | |
1332 | return (1); | |
1333 | } | |
1334 | ||
1335 | return (0); | |
1336 | } | |
1337 | } | |
1338 | else if (groupname[0] == '#') | |
1339 | return (0); | |
bd7854cb | 1340 | #endif /* HAVE_MBR_UID_TO_UUID */ |
1341 | ||
ef416fc2 | 1342 | /* |
1343 | * If we get this far, then the user isn't part of the named group... | |
1344 | */ | |
1345 | ||
1346 | return (0); | |
1347 | } | |
1348 | ||
1349 | ||
1350 | /* | |
1351 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1352 | */ | |
1353 | ||
1354 | cupsd_location_t * /* O - New location */ | |
1355 | cupsdCopyLocation( | |
10d09e33 | 1356 | cupsd_location_t *loc) /* I - Original location */ |
ef416fc2 | 1357 | { |
ef416fc2 | 1358 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 1359 | |
1360 | ||
ef416fc2 | 1361 | /* |
10d09e33 | 1362 | * Make a copy of the original location... |
ef416fc2 | 1363 | */ |
1364 | ||
10d09e33 | 1365 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 1366 | return (NULL); |
1367 | ||
ef416fc2 | 1368 | /* |
1369 | * Copy the information from the original location to the new one. | |
1370 | */ | |
1371 | ||
10d09e33 MS |
1372 | if (!loc) |
1373 | return (temp); | |
ef416fc2 | 1374 | |
10d09e33 MS |
1375 | if (loc->location) |
1376 | temp->location = _cupsStrAlloc(loc->location); | |
ef416fc2 | 1377 | |
10d09e33 MS |
1378 | temp->limit = loc->limit; |
1379 | temp->order_type = loc->order_type; | |
1380 | temp->type = loc->type; | |
1381 | temp->level = loc->level; | |
1382 | temp->satisfy = loc->satisfy; | |
1383 | temp->encryption = loc->encryption; | |
1384 | ||
1385 | if (loc->names) | |
1386 | { | |
1387 | if ((temp->names = cupsArrayDup(loc->names)) == NULL) | |
ef416fc2 | 1388 | { |
1389 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1390 | "Unable to allocate memory for %d names: %s", |
1391 | cupsArrayCount(loc->names), strerror(errno)); | |
bd7854cb | 1392 | |
10d09e33 | 1393 | cupsdFreeLocation(temp); |
ef416fc2 | 1394 | return (NULL); |
1395 | } | |
ef416fc2 | 1396 | } |
1397 | ||
10d09e33 | 1398 | if (loc->allow) |
ef416fc2 | 1399 | { |
1400 | /* | |
1401 | * Copy allow rules... | |
1402 | */ | |
1403 | ||
10d09e33 | 1404 | if ((temp->allow = cupsArrayDup(loc->allow)) == NULL) |
ef416fc2 | 1405 | { |
1406 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1407 | "Unable to allocate memory for %d allow rules: %s", |
1408 | cupsArrayCount(loc->allow), strerror(errno)); | |
1409 | cupsdFreeLocation(temp); | |
ef416fc2 | 1410 | return (NULL); |
1411 | } | |
ef416fc2 | 1412 | } |
1413 | ||
10d09e33 | 1414 | if (loc->deny) |
ef416fc2 | 1415 | { |
1416 | /* | |
1417 | * Copy deny rules... | |
1418 | */ | |
1419 | ||
10d09e33 | 1420 | if ((temp->deny = cupsArrayDup(loc->deny)) == NULL) |
ef416fc2 | 1421 | { |
1422 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1423 | "Unable to allocate memory for %d deny rules: %s", |
1424 | cupsArrayCount(loc->deny), strerror(errno)); | |
1425 | cupsdFreeLocation(temp); | |
ef416fc2 | 1426 | return (NULL); |
1427 | } | |
ef416fc2 | 1428 | } |
1429 | ||
1430 | return (temp); | |
1431 | } | |
1432 | ||
1433 | ||
1434 | /* | |
1435 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1436 | */ | |
1437 | ||
1438 | void | |
1439 | cupsdDeleteAllLocations(void) | |
1440 | { | |
ef416fc2 | 1441 | /* |
10d09e33 | 1442 | * Free the location array, which will free all of the locations... |
ef416fc2 | 1443 | */ |
1444 | ||
bd7854cb | 1445 | cupsArrayDelete(Locations); |
1446 | Locations = NULL; | |
ef416fc2 | 1447 | } |
1448 | ||
1449 | ||
ef416fc2 | 1450 | /* |
1451 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1452 | */ | |
1453 | ||
1454 | cupsd_location_t * /* O - Location that matches */ | |
1455 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1456 | http_state_t state) /* I - HTTP state/request */ | |
1457 | { | |
ef416fc2 | 1458 | char uri[HTTP_MAX_URI], |
1459 | /* URI in request... */ | |
1460 | *uriptr; /* Pointer into URI */ | |
1461 | cupsd_location_t *loc, /* Current location */ | |
1462 | *best; /* Best match for location so far */ | |
7e86f2f6 | 1463 | size_t bestlen; /* Length of best match */ |
ef416fc2 | 1464 | int limit; /* Limit field */ |
5bd77a73 | 1465 | static const int limits[] = /* Map http_status_t to CUPSD_AUTH_LIMIT_xyz */ |
ef416fc2 | 1466 | { |
5bd77a73 MS |
1467 | CUPSD_AUTH_LIMIT_ALL, |
1468 | CUPSD_AUTH_LIMIT_OPTIONS, | |
1469 | CUPSD_AUTH_LIMIT_GET, | |
1470 | CUPSD_AUTH_LIMIT_GET, | |
1471 | CUPSD_AUTH_LIMIT_HEAD, | |
1472 | CUPSD_AUTH_LIMIT_POST, | |
1473 | CUPSD_AUTH_LIMIT_POST, | |
1474 | CUPSD_AUTH_LIMIT_POST, | |
1475 | CUPSD_AUTH_LIMIT_PUT, | |
1476 | CUPSD_AUTH_LIMIT_PUT, | |
1477 | CUPSD_AUTH_LIMIT_DELETE, | |
1478 | CUPSD_AUTH_LIMIT_TRACE, | |
1479 | CUPSD_AUTH_LIMIT_ALL, | |
1480 | CUPSD_AUTH_LIMIT_ALL | |
ef416fc2 | 1481 | }; |
1482 | ||
1483 | ||
1484 | /* | |
1485 | * First copy the connection URI to a local string so we have drop | |
1486 | * any .ppd extension from the pathname in /printers or /classes | |
1487 | * URIs... | |
1488 | */ | |
1489 | ||
1490 | strlcpy(uri, path, sizeof(uri)); | |
1491 | ||
1492 | if (!strncmp(uri, "/printers/", 10) || | |
1493 | !strncmp(uri, "/classes/", 9)) | |
1494 | { | |
1495 | /* | |
1496 | * Check if the URI has .ppd on the end... | |
1497 | */ | |
1498 | ||
1499 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1500 | ||
1501 | if (!strcmp(uriptr, ".ppd")) | |
1502 | *uriptr = '\0'; | |
1503 | } | |
1504 | ||
1505 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1506 | ||
1507 | /* | |
1508 | * Loop through the list of locations to find a match... | |
1509 | */ | |
1510 | ||
1511 | limit = limits[state]; | |
1512 | best = NULL; | |
1513 | bestlen = 0; | |
1514 | ||
bd7854cb | 1515 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1516 | loc; | |
1517 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1518 | { |
1519 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1520 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1521 | |
1522 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1523 | { | |
1524 | /* | |
1525 | * Use case-insensitive comparison for queue names... | |
1526 | */ | |
1527 | ||
e1d6a774 | 1528 | if (loc->length > bestlen && loc->location && |
88f9aafc | 1529 | !_cups_strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1530 | loc->location[0] == '/' && |
1531 | (limit & loc->limit) != 0) | |
1532 | { | |
1533 | best = loc; | |
1534 | bestlen = loc->length; | |
1535 | } | |
1536 | } | |
1537 | else | |
1538 | { | |
1539 | /* | |
1540 | * Use case-sensitive comparison for other URIs... | |
1541 | */ | |
1542 | ||
e1d6a774 | 1543 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1544 | !strncmp(uri, loc->location, loc->length) && |
1545 | loc->location[0] == '/' && | |
1546 | (limit & loc->limit) != 0) | |
1547 | { | |
1548 | best = loc; | |
1549 | bestlen = loc->length; | |
1550 | } | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | /* | |
1555 | * Return the match, if any... | |
1556 | */ | |
1557 | ||
1558 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1559 | best ? best->location : "NONE"); | |
1560 | ||
1561 | return (best); | |
1562 | } | |
1563 | ||
1564 | ||
1565 | /* | |
1566 | * 'cupsdFindLocation()' - Find the named location. | |
1567 | */ | |
1568 | ||
1569 | cupsd_location_t * /* O - Location that matches */ | |
1570 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1571 | { | |
bd7854cb | 1572 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1573 | |
1574 | ||
bd7854cb | 1575 | key.location = (char *)location; |
ef416fc2 | 1576 | |
bd7854cb | 1577 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1578 | } |
1579 | ||
1580 | ||
10d09e33 MS |
1581 | /* |
1582 | * 'cupsdFreeLocation()' - Free all memory used by a location. | |
1583 | */ | |
1584 | ||
1585 | void | |
1586 | cupsdFreeLocation(cupsd_location_t *loc)/* I - Location to free */ | |
1587 | { | |
1588 | cupsArrayDelete(loc->names); | |
1589 | cupsArrayDelete(loc->allow); | |
1590 | cupsArrayDelete(loc->deny); | |
1591 | ||
1592 | _cupsStrFree(loc->location); | |
1593 | free(loc); | |
1594 | } | |
1595 | ||
1596 | ||
ef416fc2 | 1597 | /* |
1598 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1599 | */ | |
1600 | ||
1601 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1602 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1603 | const char *owner)/* I - Owner of object */ | |
1604 | { | |
10d09e33 | 1605 | int i, /* Looping vars */ |
2fb76298 MS |
1606 | auth, /* Authorization status */ |
1607 | type; /* Type of authentication */ | |
5ec1fd3d MS |
1608 | http_addr_t *hostaddr = httpGetAddress(con->http); |
1609 | /* Client address */ | |
1610 | const char *hostname = httpGetHostname(con->http, NULL, 0); | |
1611 | /* Client hostname */ | |
ef416fc2 | 1612 | unsigned address[4]; /* Authorization address */ |
1613 | cupsd_location_t *best; /* Best match for location so far */ | |
7e86f2f6 | 1614 | size_t hostlen; /* Length of hostname */ |
10d09e33 MS |
1615 | char *name, /* Current username */ |
1616 | username[256], /* Username to authorize */ | |
db1f069b MS |
1617 | ownername[256], /* Owner name to authorize */ |
1618 | *ptr; /* Pointer into username */ | |
ef416fc2 | 1619 | struct passwd *pw; /* User password data */ |
1620 | static const char * const levels[] = /* Auth levels */ | |
1621 | { | |
1622 | "ANON", | |
1623 | "USER", | |
1624 | "GROUP" | |
1625 | }; | |
1626 | static const char * const types[] = /* Auth types */ | |
1627 | { | |
2fb76298 MS |
1628 | "None", |
1629 | "Basic", | |
2fb76298 | 1630 | "Negotiate" |
ef416fc2 | 1631 | }; |
1632 | ||
1633 | ||
1634 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1635 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
f301802f | 1636 | con->uri, con->best, con->best ? con->best->location ? |
1637 | con->best->location : "(null)" : ""); | |
fa73b229 | 1638 | if (owner) |
1639 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1640 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1641 | |
1642 | /* | |
1643 | * If there is no "best" authentication rule for this request, then | |
1644 | * access is allowed from the local system and denied from other | |
1645 | * addresses... | |
1646 | */ | |
1647 | ||
1648 | if (!con->best) | |
1649 | { | |
5ec1fd3d MS |
1650 | if (httpAddrLocalhost(httpGetAddress(con->http)) || |
1651 | !strcmp(hostname, ServerName) || | |
1652 | cupsArrayFind(ServerAlias, (void *)hostname)) | |
ef416fc2 | 1653 | return (HTTP_OK); |
1654 | else | |
1655 | return (HTTP_FORBIDDEN); | |
1656 | } | |
1657 | ||
1658 | best = con->best; | |
1659 | ||
5bd77a73 | 1660 | if ((type = best->type) == CUPSD_AUTH_DEFAULT) |
dcb445bc | 1661 | type = cupsdDefaultAuthType(); |
2fb76298 | 1662 | |
ef416fc2 | 1663 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
5bd77a73 MS |
1664 | "cupsdIsAuthorized: level=CUPSD_AUTH_%s, type=%s, " |
1665 | "satisfy=CUPSD_AUTH_SATISFY_%s, num_names=%d", | |
2fb76298 | 1666 | levels[best->level], types[type], |
10d09e33 | 1667 | best->satisfy ? "ANY" : "ALL", cupsArrayCount(best->names)); |
ef416fc2 | 1668 | |
5bd77a73 | 1669 | if (best->limit == CUPSD_AUTH_LIMIT_IPP) |
ef416fc2 | 1670 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", |
1671 | best->op, ippOpString(best->op)); | |
1672 | ||
1673 | /* | |
1674 | * Check host/ip-based accesses... | |
1675 | */ | |
1676 | ||
1677 | #ifdef AF_INET6 | |
5ec1fd3d | 1678 | if (httpAddrFamily(hostaddr) == AF_INET6) |
ef416fc2 | 1679 | { |
1680 | /* | |
1681 | * Copy IPv6 address... | |
1682 | */ | |
1683 | ||
5ec1fd3d MS |
1684 | address[0] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[0]); |
1685 | address[1] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1686 | address[2] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1687 | address[3] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
ef416fc2 | 1688 | } |
1689 | else | |
1690 | #endif /* AF_INET6 */ | |
996acce8 | 1691 | if (con->http->hostaddr->addr.sa_family == AF_INET) |
ef416fc2 | 1692 | { |
1693 | /* | |
1694 | * Copy IPv4 address... | |
1695 | */ | |
1696 | ||
1697 | address[0] = 0; | |
1698 | address[1] = 0; | |
1699 | address[2] = 0; | |
5ec1fd3d | 1700 | address[3] = ntohl(hostaddr->ipv4.sin_addr.s_addr); |
ef416fc2 | 1701 | } |
1702 | else | |
1703 | memset(address, 0, sizeof(address)); | |
1704 | ||
5ec1fd3d | 1705 | hostlen = strlen(hostname); |
ef416fc2 | 1706 | |
5ec1fd3d | 1707 | auth = cupsdCheckAccess(address, hostname, hostlen, best) |
5bd77a73 | 1708 | ? CUPSD_AUTH_ALLOW : CUPSD_AUTH_DENY; |
ef416fc2 | 1709 | |
5bd77a73 | 1710 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=CUPSD_AUTH_%s...", |
ef416fc2 | 1711 | auth ? "DENY" : "ALLOW"); |
1712 | ||
5bd77a73 | 1713 | if (auth == CUPSD_AUTH_DENY && best->satisfy == CUPSD_AUTH_SATISFY_ALL) |
ef416fc2 | 1714 | return (HTTP_FORBIDDEN); |
1715 | ||
1716 | #ifdef HAVE_SSL | |
1717 | /* | |
1718 | * See if encryption is required... | |
1719 | */ | |
1720 | ||
996acce8 | 1721 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http->tls && |
5ec1fd3d MS |
1722 | _cups_strcasecmp(hostname, "localhost") && |
1723 | !httpAddrLocalhost(hostaddr) && | |
5bd77a73 | 1724 | best->satisfy == CUPSD_AUTH_SATISFY_ALL) && |
c8fef167 | 1725 | !(type == CUPSD_AUTH_NEGOTIATE || |
dcb445bc MS |
1726 | (type == CUPSD_AUTH_NONE && |
1727 | cupsdDefaultAuthType() == CUPSD_AUTH_NEGOTIATE))) | |
ef416fc2 | 1728 | { |
355e94dc | 1729 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1730 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
1731 | return (HTTP_UPGRADE_REQUIRED); | |
1732 | } | |
1733 | #endif /* HAVE_SSL */ | |
1734 | ||
1735 | /* | |
1736 | * Now see what access level is required... | |
1737 | */ | |
1738 | ||
5bd77a73 | 1739 | if (best->level == CUPSD_AUTH_ANON || /* Anonymous access - allow it */ |
10d09e33 | 1740 | (type == CUPSD_AUTH_NONE && cupsArrayCount(best->names) == 0)) |
ef416fc2 | 1741 | return (HTTP_OK); |
1742 | ||
5bd77a73 MS |
1743 | if (!con->username[0] && type == CUPSD_AUTH_NONE && |
1744 | best->limit == CUPSD_AUTH_LIMIT_IPP) | |
ef416fc2 | 1745 | { |
1746 | /* | |
1747 | * Check for unauthenticated username... | |
1748 | */ | |
1749 | ||
1750 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
1751 | ||
1752 | ||
1753 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
1754 | if (attr) | |
1755 | { | |
355e94dc | 1756 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1757 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
1758 | attr->values[0].string.text); | |
db1f069b | 1759 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 1760 | } |
5bd77a73 | 1761 | else if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
ef416fc2 | 1762 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1763 | else | |
1764 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1765 | } | |
fa73b229 | 1766 | else |
1767 | { | |
355e94dc | 1768 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 1769 | con->username); |
1770 | ||
f7deaa1a | 1771 | #ifdef HAVE_AUTHORIZATION_H |
1772 | if (!con->username[0] && !con->authref) | |
1773 | #else | |
fa73b229 | 1774 | if (!con->username[0]) |
f7deaa1a | 1775 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 1776 | { |
5bd77a73 | 1777 | if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
fa73b229 | 1778 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1779 | else | |
1780 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1781 | } | |
1782 | ||
eac3a0a0 | 1783 | |
5bd77a73 | 1784 | if (con->type != type && type != CUPSD_AUTH_NONE && |
eac3a0a0 MS |
1785 | #ifdef HAVE_GSSAPI |
1786 | (type != CUPSD_AUTH_NEGOTIATE || con->gss_uid <= 0) && | |
1787 | #endif /* HAVE_GSSAPI */ | |
e0660879 | 1788 | con->type != CUPSD_AUTH_BASIC) |
2fb76298 | 1789 | { |
e0660879 | 1790 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s.", |
2fb76298 MS |
1791 | types[con->type], types[type]); |
1792 | ||
1793 | return (HTTP_UNAUTHORIZED); | |
1794 | } | |
1795 | ||
db1f069b | 1796 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 1797 | } |
ef416fc2 | 1798 | |
1799 | /* | |
fa73b229 | 1800 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 1801 | * access... (root always matches) |
1802 | */ | |
1803 | ||
fa73b229 | 1804 | if (!strcmp(username, "root")) |
ef416fc2 | 1805 | return (HTTP_OK); |
1806 | ||
db1f069b MS |
1807 | /* |
1808 | * Strip any @domain or @KDC from the username and owner... | |
1809 | */ | |
1810 | ||
1811 | if ((ptr = strchr(username, '@')) != NULL) | |
1812 | *ptr = '\0'; | |
1813 | ||
1814 | if (owner) | |
1815 | { | |
1816 | strlcpy(ownername, owner, sizeof(ownername)); | |
1817 | ||
1818 | if ((ptr = strchr(ownername, '@')) != NULL) | |
1819 | *ptr = '\0'; | |
1820 | } | |
1821 | else | |
1822 | ownername[0] = '\0'; | |
1823 | ||
ef416fc2 | 1824 | /* |
1825 | * Get the user info... | |
1826 | */ | |
1827 | ||
f7deaa1a | 1828 | if (username[0]) |
1829 | { | |
1830 | pw = getpwnam(username); | |
1831 | endpwent(); | |
1832 | } | |
1833 | else | |
1834 | pw = NULL; | |
ef416fc2 | 1835 | |
5bd77a73 | 1836 | if (best->level == CUPSD_AUTH_USER) |
ef416fc2 | 1837 | { |
1838 | /* | |
1839 | * If there are no names associated with this location, then | |
1840 | * any valid user is OK... | |
1841 | */ | |
1842 | ||
10d09e33 | 1843 | if (cupsArrayCount(best->names) == 0) |
ef416fc2 | 1844 | return (HTTP_OK); |
1845 | ||
1846 | /* | |
1847 | * Otherwise check the user list and return OK if this user is | |
1848 | * allowed... | |
1849 | */ | |
1850 | ||
1851 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1852 | "cupsdIsAuthorized: Checking user membership..."); | |
1853 | ||
f7deaa1a | 1854 | #ifdef HAVE_AUTHORIZATION_H |
1855 | /* | |
1856 | * If an authorization reference was supplied it must match a right name... | |
1857 | */ | |
1858 | ||
1859 | if (con->authref) | |
1860 | { | |
10d09e33 MS |
1861 | for (name = (char *)cupsArrayFirst(best->names); |
1862 | name; | |
1863 | name = (char *)cupsArrayNext(best->names)) | |
f7deaa1a | 1864 | { |
88f9aafc | 1865 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9) && check_authref(con, name + 9)) |
f7deaa1a | 1866 | return (HTTP_OK); |
88f9aafc | 1867 | else if (!_cups_strcasecmp(name, "@SYSTEM") && SystemGroupAuthKey && |
f7deaa1a | 1868 | check_authref(con, SystemGroupAuthKey)) |
1869 | return (HTTP_OK); | |
1870 | } | |
1871 | ||
ee571f26 | 1872 | return (HTTP_FORBIDDEN); |
f7deaa1a | 1873 | } |
1874 | #endif /* HAVE_AUTHORIZATION_H */ | |
1875 | ||
10d09e33 MS |
1876 | for (name = (char *)cupsArrayFirst(best->names); |
1877 | name; | |
1878 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 1879 | { |
88f9aafc MS |
1880 | if (!_cups_strcasecmp(name, "@OWNER") && owner && |
1881 | !_cups_strcasecmp(username, ownername)) | |
ef416fc2 | 1882 | return (HTTP_OK); |
88f9aafc | 1883 | else if (!_cups_strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 1884 | { |
10d09e33 MS |
1885 | for (i = 0; i < NumSystemGroups; i ++) |
1886 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 1887 | return (HTTP_OK); |
1888 | } | |
10d09e33 | 1889 | else if (name[0] == '@') |
ef416fc2 | 1890 | { |
10d09e33 | 1891 | if (cupsdCheckGroup(username, pw, name + 1)) |
ef416fc2 | 1892 | return (HTTP_OK); |
1893 | } | |
88f9aafc | 1894 | else if (!_cups_strcasecmp(username, name)) |
ef416fc2 | 1895 | return (HTTP_OK); |
1896 | } | |
1897 | ||
85dda01c | 1898 | return (con->username[0] ? HTTP_FORBIDDEN : HTTP_UNAUTHORIZED); |
ef416fc2 | 1899 | } |
1900 | ||
1901 | /* | |
1902 | * Check to see if this user is in any of the named groups... | |
1903 | */ | |
1904 | ||
1905 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1906 | "cupsdIsAuthorized: Checking group membership..."); | |
1907 | ||
1908 | /* | |
1909 | * Check to see if this user is in any of the named groups... | |
1910 | */ | |
1911 | ||
10d09e33 MS |
1912 | for (name = (char *)cupsArrayFirst(best->names); |
1913 | name; | |
1914 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 1915 | { |
1916 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1917 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
10d09e33 | 1918 | name); |
ef416fc2 | 1919 | |
88f9aafc | 1920 | if (!_cups_strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 1921 | { |
10d09e33 MS |
1922 | for (i = 0; i < NumSystemGroups; i ++) |
1923 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 1924 | return (HTTP_OK); |
1925 | } | |
10d09e33 | 1926 | else if (cupsdCheckGroup(username, pw, name)) |
ef416fc2 | 1927 | return (HTTP_OK); |
1928 | } | |
1929 | ||
1930 | /* | |
1931 | * The user isn't part of the specified group, so deny access... | |
1932 | */ | |
1933 | ||
355e94dc | 1934 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1935 | "cupsdIsAuthorized: User not in group(s)!"); |
1936 | ||
85dda01c | 1937 | return (con->username[0] ? HTTP_FORBIDDEN : HTTP_UNAUTHORIZED); |
ef416fc2 | 1938 | } |
1939 | ||
1940 | ||
1941 | /* | |
10d09e33 MS |
1942 | * 'cupsdNewLocation()' - Create a new location for authorization. |
1943 | * | |
1944 | * Note: Still need to call cupsdAddLocation() to add it to the list of global | |
1945 | * locations. | |
ef416fc2 | 1946 | */ |
1947 | ||
10d09e33 MS |
1948 | cupsd_location_t * /* O - Pointer to new location record */ |
1949 | cupsdNewLocation(const char *location) /* I - Location path */ | |
ef416fc2 | 1950 | { |
10d09e33 | 1951 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 1952 | |
1953 | ||
1954 | /* | |
10d09e33 | 1955 | * Try to allocate memory for the new location. |
ef416fc2 | 1956 | */ |
1957 | ||
10d09e33 | 1958 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 1959 | return (NULL); |
1960 | ||
1961 | /* | |
10d09e33 | 1962 | * Initialize the record and copy the name over... |
ef416fc2 | 1963 | */ |
1964 | ||
10d09e33 MS |
1965 | if ((temp->location = _cupsStrAlloc(location)) == NULL) |
1966 | { | |
1967 | free(temp); | |
ef416fc2 | 1968 | return (NULL); |
10d09e33 | 1969 | } |
ef416fc2 | 1970 | |
10d09e33 | 1971 | temp->length = strlen(temp->location); |
ef416fc2 | 1972 | |
1973 | /* | |
10d09e33 | 1974 | * Return the new record... |
ef416fc2 | 1975 | */ |
1976 | ||
ef416fc2 | 1977 | return (temp); |
1978 | } | |
1979 | ||
1980 | ||
f7deaa1a | 1981 | #ifdef HAVE_AUTHORIZATION_H |
1982 | /* | |
1983 | * 'check_authref()' - Check if an authorization services reference has the | |
1984 | * supplied right. | |
1985 | */ | |
1986 | ||
1987 | static int /* O - 1 if right is valid, 0 otherwise */ | |
1988 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
1989 | const char *right) /* I - Right name */ | |
1990 | { | |
1991 | OSStatus status; /* OS Status */ | |
1992 | AuthorizationItem authright; /* Authorization right */ | |
1993 | AuthorizationRights authrights; /* Authorization rights */ | |
1994 | AuthorizationFlags authflags; /* Authorization flags */ | |
1995 | ||
1996 | ||
1997 | /* | |
1998 | * Check to see if the user is allowed to perform the task... | |
1999 | */ | |
2000 | ||
2001 | if (!con->authref) | |
2002 | return (0); | |
2003 | ||
2004 | authright.name = right; | |
2005 | authright.valueLength = 0; | |
2006 | authright.value = NULL; | |
2007 | authright.flags = 0; | |
2008 | ||
2009 | authrights.count = 1; | |
2010 | authrights.items = &authright; | |
2011 | ||
c8fef167 | 2012 | authflags = kAuthorizationFlagDefaults | |
f7deaa1a | 2013 | kAuthorizationFlagExtendRights; |
2014 | ||
c8fef167 MS |
2015 | if ((status = AuthorizationCopyRights(con->authref, &authrights, |
2016 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 2017 | authflags, NULL)) != 0) |
2018 | { | |
2019 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2020 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2021 | authright.name, (int)status, cssmErrorString(status)); | |
2022 | return (0); | |
2023 | } | |
2024 | ||
2025 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2026 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2027 | authright.name); | |
2028 | ||
2029 | return (1); | |
2030 | } | |
2031 | #endif /* HAVE_AUTHORIZATION_H */ | |
2032 | ||
2033 | ||
bd7854cb | 2034 | /* |
2035 | * 'compare_locations()' - Compare two locations. | |
2036 | */ | |
2037 | ||
2038 | static int /* O - Result of comparison */ | |
2039 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2040 | cupsd_location_t *b) /* I - Second location */ | |
2041 | { | |
2042 | return (strcmp(b->location, a->location)); | |
2043 | } | |
2044 | ||
2045 | ||
10d09e33 MS |
2046 | /* |
2047 | * 'copy_authmask()' - Copy function for auth masks. | |
2048 | */ | |
2049 | ||
2050 | static cupsd_authmask_t * /* O - New auth mask */ | |
2051 | copy_authmask(cupsd_authmask_t *mask, /* I - Existing auth mask */ | |
2052 | void *data) /* I - User data (unused) */ | |
2053 | { | |
2054 | cupsd_authmask_t *temp; /* New auth mask */ | |
2055 | ||
2056 | ||
2057 | (void)data; | |
2058 | ||
2059 | if ((temp = malloc(sizeof(cupsd_authmask_t))) != NULL) | |
2060 | { | |
2061 | memcpy(temp, mask, sizeof(cupsd_authmask_t)); | |
2062 | ||
2063 | if (temp->type == CUPSD_AUTH_NAME || temp->type == CUPSD_AUTH_INTERFACE) | |
2064 | { | |
2065 | /* | |
2066 | * Make a copy of the name... | |
2067 | */ | |
2068 | ||
2069 | if ((temp->mask.name.name = _cupsStrAlloc(temp->mask.name.name)) == NULL) | |
2070 | { | |
2071 | /* | |
2072 | * Failed to make copy... | |
2073 | */ | |
2074 | ||
2075 | free(temp); | |
2076 | temp = NULL; | |
2077 | } | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | return (temp); | |
2082 | } | |
2083 | ||
2084 | ||
5a1d7a17 | 2085 | #if !HAVE_LIBPAM |
ef416fc2 | 2086 | /* |
2087 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2088 | * as needed. | |
2089 | */ | |
2090 | ||
2091 | static char * /* O - Encrypted password */ | |
2092 | cups_crypt(const char *pw, /* I - Password string */ | |
2093 | const char *salt) /* I - Salt (key) string */ | |
2094 | { | |
bd7854cb | 2095 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2096 | { |
2097 | /* | |
2098 | * Use MD5 passwords without the benefit of PAM; this is for | |
2099 | * Slackware Linux, and the algorithm was taken from the | |
2100 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2101 | */ | |
2102 | ||
2103 | int i; /* Looping var */ | |
2104 | unsigned long n; /* Output number */ | |
2105 | int pwlen; /* Length of password string */ | |
2106 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2107 | char *ptr; /* Pointer into result string */ | |
2108 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2109 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2110 | unsigned char digest[16]; /* MD5 digest result */ | |
2111 | static char result[120]; /* Final password string */ | |
2112 | ||
2113 | ||
2114 | /* | |
2115 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2116 | * Get a maximum of 8 characters of salt data after $1$... | |
2117 | */ | |
2118 | ||
2119 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2120 | if (*salt_end == '$') | |
2121 | break; | |
2122 | ||
2123 | /* | |
2124 | * Compute the MD5 sum we need... | |
2125 | */ | |
2126 | ||
2127 | pwlen = strlen(pw); | |
2128 | ||
757d2cad | 2129 | _cupsMD5Init(&state); |
2130 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2131 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2132 | |
757d2cad | 2133 | _cupsMD5Init(&state2); |
2134 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2135 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2136 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2137 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2138 | |
2139 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2140 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2141 | |
2142 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2143 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2144 | |
757d2cad | 2145 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2146 | |
2147 | for (i = 0; i < 1000; i ++) | |
2148 | { | |
757d2cad | 2149 | _cupsMD5Init(&state); |
ef416fc2 | 2150 | |
2151 | if (i & 1) | |
757d2cad | 2152 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2153 | else |
757d2cad | 2154 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2155 | |
2156 | if (i % 3) | |
757d2cad | 2157 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2158 | |
2159 | if (i % 7) | |
757d2cad | 2160 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2161 | |
2162 | if (i & 1) | |
757d2cad | 2163 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2164 | else |
757d2cad | 2165 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2166 | |
757d2cad | 2167 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2168 | } |
2169 | ||
2170 | /* | |
2171 | * Copy the final sum to the result string and return... | |
2172 | */ | |
2173 | ||
7d5824d6 | 2174 | memcpy(result, salt, (size_t)(salt_end - salt)); |
ef416fc2 | 2175 | ptr = result + (salt_end - salt); |
2176 | *ptr++ = '$'; | |
2177 | ||
2178 | for (i = 0; i < 5; i ++, ptr += 4) | |
2179 | { | |
7d5824d6 | 2180 | n = ((((unsigned)digest[i] << 8) | (unsigned)digest[i + 6]) << 8); |
ef416fc2 | 2181 | |
2182 | if (i < 4) | |
7d5824d6 | 2183 | n |= (unsigned)digest[i + 12]; |
ef416fc2 | 2184 | else |
7d5824d6 | 2185 | n |= (unsigned)digest[5]; |
ef416fc2 | 2186 | |
2187 | to64(ptr, n, 4); | |
2188 | } | |
2189 | ||
7d5824d6 | 2190 | to64(ptr, (unsigned)digest[11], 2); |
ef416fc2 | 2191 | ptr += 2; |
2192 | *ptr = '\0'; | |
2193 | ||
2194 | return (result); | |
2195 | } | |
2196 | else | |
2197 | { | |
2198 | /* | |
2199 | * Use the standard crypt() function... | |
2200 | */ | |
2201 | ||
2202 | return (crypt(pw, salt)); | |
2203 | } | |
2204 | } | |
5a1d7a17 | 2205 | #endif /* !HAVE_LIBPAM */ |
ef416fc2 | 2206 | |
2207 | ||
10d09e33 MS |
2208 | /* |
2209 | * 'free_authmask()' - Free function for auth masks. | |
2210 | */ | |
2211 | ||
2212 | static void | |
2213 | free_authmask(cupsd_authmask_t *mask, /* I - Auth mask to free */ | |
2214 | void *data) /* I - User data (unused) */ | |
2215 | { | |
2216 | (void)data; | |
2217 | ||
2218 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) | |
2219 | _cupsStrFree(mask->mask.name.name); | |
2220 | ||
2221 | free(mask); | |
2222 | } | |
2223 | ||
2224 | ||
ef416fc2 | 2225 | #if HAVE_LIBPAM |
2226 | /* | |
2227 | * 'pam_func()' - PAM conversation function. | |
2228 | */ | |
2229 | ||
2230 | static int /* O - Success or failure */ | |
2231 | pam_func( | |
2232 | int num_msg, /* I - Number of messages */ | |
2233 | const struct pam_message **msg, /* I - Messages */ | |
2234 | struct pam_response **resp, /* O - Responses */ | |
2235 | void *appdata_ptr) | |
2236 | /* I - Pointer to connection */ | |
2237 | { | |
2238 | int i; /* Looping var */ | |
2239 | struct pam_response *replies; /* Replies */ | |
2240 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2241 | ||
2242 | ||
2243 | /* | |
2244 | * Allocate memory for the responses... | |
2245 | */ | |
2246 | ||
7e86f2f6 | 2247 | if ((replies = malloc(sizeof(struct pam_response) * (size_t)num_msg)) == NULL) |
ef416fc2 | 2248 | return (PAM_CONV_ERR); |
2249 | ||
2250 | /* | |
2251 | * Answer all of the messages... | |
2252 | */ | |
2253 | ||
2254 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2255 | ||
ef416fc2 | 2256 | data = (cupsd_authdata_t *)appdata_ptr; |
ef416fc2 | 2257 | |
2258 | for (i = 0; i < num_msg; i ++) | |
2259 | { | |
2260 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2261 | ||
2262 | switch (msg[i]->msg_style) | |
2263 | { | |
2264 | case PAM_PROMPT_ECHO_ON: | |
2265 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2266 | data->username)); | |
2267 | replies[i].resp_retcode = PAM_SUCCESS; | |
2268 | replies[i].resp = strdup(data->username); | |
2269 | break; | |
2270 | ||
2271 | case PAM_PROMPT_ECHO_OFF: | |
2272 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2273 | data->password)); | |
2274 | replies[i].resp_retcode = PAM_SUCCESS; | |
2275 | replies[i].resp = strdup(data->password); | |
2276 | break; | |
2277 | ||
2278 | case PAM_TEXT_INFO: | |
2279 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2280 | replies[i].resp_retcode = PAM_SUCCESS; | |
2281 | replies[i].resp = NULL; | |
2282 | break; | |
2283 | ||
2284 | case PAM_ERROR_MSG: | |
2285 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2286 | replies[i].resp_retcode = PAM_SUCCESS; | |
2287 | replies[i].resp = NULL; | |
2288 | break; | |
2289 | ||
2290 | default: | |
2291 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2292 | msg[i]->msg_style)); | |
2293 | free(replies); | |
2294 | return (PAM_CONV_ERR); | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | /* | |
2299 | * Return the responses back to PAM... | |
2300 | */ | |
2301 | ||
2302 | *resp = replies; | |
2303 | ||
2304 | return (PAM_SUCCESS); | |
2305 | } | |
5a1d7a17 | 2306 | #else |
ef416fc2 | 2307 | |
2308 | ||
2309 | /* | |
2310 | * 'to64()' - Base64-encode an integer value... | |
2311 | */ | |
2312 | ||
2313 | static void | |
2314 | to64(char *s, /* O - Output string */ | |
2315 | unsigned long v, /* I - Value to encode */ | |
2316 | int n) /* I - Number of digits */ | |
2317 | { | |
2318 | const char *itoa64 = "./0123456789" | |
2319 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2320 | "abcdefghijklmnopqrstuvwxyz"; | |
2321 | ||
2322 | ||
2323 | for (; n > 0; n --, v >>= 6) | |
2324 | *s++ = itoa64[v & 0x3f]; | |
2325 | } | |
2326 | #endif /* HAVE_LIBPAM */ | |
2327 | ||
2328 | ||
2329 | /* | |
f2d18633 | 2330 | * End of "$Id$". |
ef416fc2 | 2331 | */ |