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b423cd4c | 1 | /* |
b19ccc9e | 2 | * "$Id: auth.c 7830 2008-08-04 20:38:50Z mike $" |
ef416fc2 | 3 | * |
10d09e33 | 4 | * Authorization routines for the CUPS scheduler. |
ef416fc2 | 5 | * |
c8fef167 | 6 | * Copyright 2007-2011 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 | * | |
10d09e33 | 20 | * cupsdAddIPMask() - Add an IP address authorization mask. |
ef416fc2 | 21 | * cupsdAddLocation() - Add a location for authorization. |
22 | * cupsdAddName() - Add a name to a location... | |
10d09e33 MS |
23 | * cupsdAddNameMask() - Add a host or interface name authorization |
24 | * mask. | |
89d46774 | 25 | * cupsdAuthorize() - Validate any authorization credentials. |
080811b1 MS |
26 | * cupsdCheckAccess() - Check whether the given address is allowed to |
27 | * access a location. | |
ef416fc2 | 28 | * cupsdCheckAuth() - Check authorization masks. |
29 | * cupsdCheckGroup() - Check for a user's group membership. | |
30 | * cupsdCopyLocation() - Make a copy of a location... | |
89d46774 | 31 | * cupsdDeleteAllLocations() - Free all memory used for location |
32 | * authorization. | |
ef416fc2 | 33 | * cupsdFindBest() - Find the location entry that best matches the |
34 | * resource. | |
35 | * cupsdFindLocation() - Find the named location. | |
10d09e33 | 36 | * cupsdFreeLocation() - Free all memory used by a location. |
ef416fc2 | 37 | * cupsdIsAuthorized() - Check to see if the user is authorized... |
10d09e33 | 38 | * cupsdNewLocation() - Create a new location for authorization. |
080811b1 MS |
39 | * check_authref() - Check if an authorization services reference |
40 | * has the supplied right. | |
bd7854cb | 41 | * compare_locations() - Compare two locations. |
10d09e33 | 42 | * copy_authmask() - Copy function for auth masks. |
ef416fc2 | 43 | * cups_crypt() - Encrypt the password using the DES or MD5 |
44 | * algorithms, as needed. | |
10d09e33 | 45 | * free_authmask() - Free function for auth masks. |
e1d6a774 | 46 | * get_md5_password() - Get an MD5 password. |
ef416fc2 | 47 | * pam_func() - PAM conversation function. |
48 | * to64() - Base64-encode an integer value... | |
49 | */ | |
50 | ||
51 | /* | |
52 | * Include necessary headers... | |
53 | */ | |
54 | ||
55 | #include "cupsd.h" | |
56 | #include <grp.h> | |
57 | #ifdef HAVE_SHADOW_H | |
58 | # include <shadow.h> | |
59 | #endif /* HAVE_SHADOW_H */ | |
60 | #ifdef HAVE_CRYPT_H | |
61 | # include <crypt.h> | |
62 | #endif /* HAVE_CRYPT_H */ | |
63 | #if HAVE_LIBPAM | |
64 | # ifdef HAVE_PAM_PAM_APPL_H | |
65 | # include <pam/pam_appl.h> | |
66 | # else | |
67 | # include <security/pam_appl.h> | |
68 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
69 | #endif /* HAVE_LIBPAM */ | |
70 | #ifdef HAVE_USERSEC_H | |
71 | # include <usersec.h> | |
72 | #endif /* HAVE_USERSEC_H */ | |
bd7854cb | 73 | #ifdef HAVE_MEMBERSHIP_H |
74 | # include <membership.h> | |
75 | #endif /* HAVE_MEMBERSHIP_H */ | |
f7deaa1a | 76 | #ifdef HAVE_AUTHORIZATION_H |
77 | # include <Security/AuthorizationTags.h> | |
78 | # ifdef HAVE_SECBASEPRIV_H | |
79 | # include <Security/SecBasePriv.h> | |
80 | # else | |
81 | extern const char *cssmErrorString(int error); | |
82 | # endif /* HAVE_SECBASEPRIV_H */ | |
83 | #endif /* HAVE_AUTHORIZATION_H */ | |
db1f069b MS |
84 | #ifdef HAVE_SYS_PARAM_H |
85 | # include <sys/param.h> | |
86 | #endif /* HAVE_SYS_PARAM_H */ | |
bc44d920 | 87 | #ifdef HAVE_SYS_UCRED_H |
88 | # include <sys/ucred.h> | |
89 | typedef struct xucred cupsd_ucred_t; | |
90 | # define CUPSD_UCRED_UID(c) (c).cr_uid | |
91 | #else | |
92 | typedef struct ucred cupsd_ucred_t; | |
93 | # define CUPSD_UCRED_UID(c) (c).uid | |
94 | #endif /* HAVE_SYS_UCRED_H */ | |
e07d4801 MS |
95 | #ifdef HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID |
96 | /* Not in public headers... */ | |
97 | extern void krb5_ipc_client_set_target_uid(uid_t); | |
98 | extern void krb5_ipc_client_clear_target(void); | |
99 | #endif /* HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID */ | |
ef416fc2 | 100 | |
101 | ||
102 | /* | |
103 | * Local functions... | |
104 | */ | |
105 | ||
f7deaa1a | 106 | #ifdef HAVE_AUTHORIZATION_H |
107 | static int check_authref(cupsd_client_t *con, const char *right); | |
108 | #endif /* HAVE_AUTHORIZATION_H */ | |
bd7854cb | 109 | static int compare_locations(cupsd_location_t *a, |
110 | cupsd_location_t *b); | |
10d09e33 | 111 | static cupsd_authmask_t *copy_authmask(cupsd_authmask_t *am, void *data); |
d09495fa | 112 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 113 | static char *cups_crypt(const char *pw, const char *salt); |
d09495fa | 114 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
10d09e33 | 115 | static void free_authmask(cupsd_authmask_t *am, void *data); |
e1d6a774 | 116 | static char *get_md5_password(const char *username, |
117 | const char *group, char passwd[33]); | |
ef416fc2 | 118 | #if HAVE_LIBPAM |
119 | static int pam_func(int, const struct pam_message **, | |
120 | struct pam_response **, void *); | |
f7deaa1a | 121 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 122 | static void to64(char *s, unsigned long v, int n); |
123 | #endif /* HAVE_LIBPAM */ | |
124 | ||
125 | ||
126 | /* | |
127 | * Local structures... | |
128 | */ | |
129 | ||
130 | #if HAVE_LIBPAM | |
131 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
132 | { | |
133 | char username[33], /* Username string */ | |
134 | password[33]; /* Password string */ | |
135 | } cupsd_authdata_t; | |
136 | #endif /* HAVE_LIBPAM */ | |
137 | ||
138 | ||
139 | /* | |
140 | * Local globals... | |
141 | */ | |
142 | ||
f301802f | 143 | #if defined(__hpux) && HAVE_LIBPAM |
b423cd4c | 144 | static cupsd_authdata_t *auth_data; /* Current client being authenticated */ |
ef416fc2 | 145 | #endif /* __hpux && HAVE_LIBPAM */ |
146 | ||
147 | ||
148 | /* | |
10d09e33 | 149 | * 'cupsdAddIPMask()' - Add an IP address authorization mask. |
ef416fc2 | 150 | */ |
151 | ||
10d09e33 MS |
152 | int /* O - 1 on success, 0 on failure */ |
153 | cupsdAddIPMask( | |
154 | cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
155 | const unsigned address[4], /* I - IP address */ | |
156 | const unsigned netmask[4]) /* I - IP netmask */ | |
ef416fc2 | 157 | { |
10d09e33 | 158 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 159 | |
160 | ||
10d09e33 MS |
161 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
162 | "cupsdAddIPMask(masks=%p(%p), address=%x:%x:%x:%x, " | |
163 | "netmask=%x:%x:%x:%x)", | |
164 | masks, *masks, | |
165 | address[0], address[1], address[2], address[3], | |
166 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 167 | |
10d09e33 MS |
168 | temp.type = CUPSD_AUTH_IP; |
169 | memcpy(temp.mask.ip.address, address, sizeof(temp.mask.ip.address)); | |
170 | memcpy(temp.mask.ip.netmask, netmask, sizeof(temp.mask.ip.netmask)); | |
ef416fc2 | 171 | |
bd7854cb | 172 | /* |
10d09e33 | 173 | * Create the masks array as needed and add... |
bd7854cb | 174 | */ |
175 | ||
10d09e33 MS |
176 | if (!*masks) |
177 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
178 | (cups_acopy_func_t)copy_authmask, | |
179 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 180 | |
10d09e33 MS |
181 | return (cupsArrayAdd(*masks, &temp)); |
182 | } | |
ef416fc2 | 183 | |
bd7854cb | 184 | |
10d09e33 MS |
185 | /* |
186 | * 'cupsdAddLocation()' - Add a location for authorization. | |
187 | */ | |
ef416fc2 | 188 | |
10d09e33 MS |
189 | void |
190 | cupsdAddLocation(cupsd_location_t *loc) /* I - Location to add */ | |
191 | { | |
ef416fc2 | 192 | /* |
10d09e33 | 193 | * Make sure the locations array is created... |
ef416fc2 | 194 | */ |
195 | ||
10d09e33 MS |
196 | if (!Locations) |
197 | Locations = cupsArrayNew3((cups_array_func_t)compare_locations, NULL, | |
198 | (cups_ahash_func_t)NULL, 0, | |
199 | (cups_acopy_func_t)NULL, | |
200 | (cups_afree_func_t)cupsdFreeLocation); | |
201 | ||
202 | if (Locations) | |
203 | { | |
204 | cupsArrayAdd(Locations, loc); | |
205 | ||
206 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: Added location \"%s\"", | |
207 | loc->location ? loc->location : "(null)"); | |
208 | } | |
ef416fc2 | 209 | } |
210 | ||
211 | ||
212 | /* | |
213 | * 'cupsdAddName()' - Add a name to a location... | |
214 | */ | |
215 | ||
216 | void | |
217 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
218 | char *name) /* I - Name to add */ | |
219 | { | |
ef416fc2 | 220 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", |
221 | loc, name); | |
222 | ||
10d09e33 MS |
223 | if (!loc->names) |
224 | loc->names = cupsArrayNew3(NULL, NULL, NULL, 0, | |
225 | (cups_acopy_func_t)_cupsStrAlloc, | |
226 | (cups_afree_func_t)_cupsStrFree); | |
ef416fc2 | 227 | |
10d09e33 | 228 | if (!cupsArrayAdd(loc->names, name)) |
ef416fc2 | 229 | { |
230 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
231 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 232 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 233 | return; |
234 | } | |
ef416fc2 | 235 | } |
236 | ||
237 | ||
238 | /* | |
10d09e33 | 239 | * 'cupsdAddNameMask()' - Add a host or interface name authorization mask. |
ef416fc2 | 240 | */ |
241 | ||
10d09e33 MS |
242 | int /* O - 1 on success, 0 on failure */ |
243 | cupsdAddNameMask(cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
244 | char *name) /* I - Host or interface name */ | |
ef416fc2 | 245 | { |
10d09e33 | 246 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 247 | char ifname[32], /* Interface name */ |
248 | *ifptr; /* Pointer to end of name */ | |
249 | ||
250 | ||
10d09e33 MS |
251 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
252 | "cupsdAddNameMask(masks=%p(%p), name=\"%s\")", | |
253 | masks, *masks, name); | |
ef416fc2 | 254 | |
88f9aafc | 255 | if (!_cups_strcasecmp(name, "@LOCAL")) |
ef416fc2 | 256 | { |
257 | /* | |
10d09e33 | 258 | * Deny *interface*... |
ef416fc2 | 259 | */ |
260 | ||
10d09e33 MS |
261 | temp.type = CUPSD_AUTH_INTERFACE; |
262 | temp.mask.name.name = (char *)"*"; | |
ef416fc2 | 263 | } |
88f9aafc | 264 | else if (!_cups_strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 265 | { |
266 | /* | |
10d09e33 | 267 | * Deny *interface*... |
ef416fc2 | 268 | */ |
269 | ||
270 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
271 | ||
10d09e33 | 272 | ifptr = ifname + strlen(ifname) - 1; |
ef416fc2 | 273 | |
10d09e33 | 274 | if (ifptr >= ifname && *ifptr == ')') |
ef416fc2 | 275 | { |
276 | ifptr --; | |
277 | *ifptr = '\0'; | |
278 | } | |
279 | ||
10d09e33 MS |
280 | temp.type = CUPSD_AUTH_INTERFACE; |
281 | temp.mask.name.name = ifname; | |
ef416fc2 | 282 | } |
283 | else | |
284 | { | |
285 | /* | |
10d09e33 | 286 | * Deny name... |
ef416fc2 | 287 | */ |
288 | ||
10d09e33 MS |
289 | if (*name == '*') |
290 | name ++; | |
ef416fc2 | 291 | |
10d09e33 MS |
292 | temp.type = CUPSD_AUTH_NAME; |
293 | temp.mask.name.name = (char *)name; | |
294 | } | |
ef416fc2 | 295 | |
10d09e33 MS |
296 | /* |
297 | * Set the name length... | |
298 | */ | |
ef416fc2 | 299 | |
10d09e33 | 300 | temp.mask.name.length = strlen(temp.mask.name.name); |
ef416fc2 | 301 | |
10d09e33 MS |
302 | /* |
303 | * Create the masks array as needed and add... | |
304 | */ | |
ef416fc2 | 305 | |
10d09e33 MS |
306 | if (!*masks) |
307 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
308 | (cups_acopy_func_t)copy_authmask, | |
309 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 310 | |
10d09e33 | 311 | return (cupsArrayAdd(*masks, &temp)); |
ef416fc2 | 312 | } |
313 | ||
314 | ||
315 | /* | |
316 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
317 | */ | |
318 | ||
319 | void | |
320 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
321 | { | |
322 | int type; /* Authentication type */ | |
f7deaa1a | 323 | const char *authorization; /* Pointer into Authorization string */ |
324 | char *ptr, /* Pointer into string */ | |
db1f069b | 325 | username[256], /* Username string */ |
ef416fc2 | 326 | password[33]; /* Password string */ |
db0bd74a | 327 | cupsd_cert_t *localuser; /* Certificate username */ |
ef416fc2 | 328 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ |
329 | md5[33], /* MD5 password */ | |
330 | basicmd5[33]; /* MD5 of Basic password */ | |
331 | static const char * const states[] = /* HTTP client states... */ | |
332 | { | |
333 | "WAITING", | |
334 | "OPTIONS", | |
335 | "GET", | |
336 | "GET", | |
337 | "HEAD", | |
338 | "POST", | |
339 | "POST", | |
340 | "POST", | |
341 | "PUT", | |
342 | "PUT", | |
343 | "DELETE", | |
344 | "TRACE", | |
345 | "CLOSE", | |
346 | "STATUS" | |
347 | }; | |
348 | ||
349 | ||
350 | /* | |
351 | * Locate the best matching location so we know what kind of | |
352 | * authentication to expect... | |
353 | */ | |
354 | ||
355 | con->best = cupsdFindBest(con->uri, con->http.state); | |
5bd77a73 | 356 | con->type = CUPSD_AUTH_NONE; |
ef416fc2 | 357 | |
358 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
359 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
360 | con->uri, con->best, con->best ? con->best->location : ""); | |
361 | ||
5bd77a73 | 362 | if (con->best && con->best->type != CUPSD_AUTH_NONE) |
7ff4fea9 | 363 | { |
5bd77a73 | 364 | if (con->best->type == CUPSD_AUTH_DEFAULT) |
7ff4fea9 MS |
365 | type = DefaultAuthType; |
366 | else | |
367 | type = con->best->type; | |
368 | } | |
ef416fc2 | 369 | else |
370 | type = DefaultAuthType; | |
371 | ||
372 | /* | |
373 | * Decode the Authorization string... | |
374 | */ | |
375 | ||
f7deaa1a | 376 | authorization = httpGetField(&con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 377 | |
378 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
379 | authorization); | |
380 | ||
381 | username[0] = '\0'; | |
382 | password[0] = '\0'; | |
383 | ||
07ed0e9a MS |
384 | #ifdef HAVE_GSSAPI |
385 | con->gss_uid = 0; | |
386 | #endif /* HAVE_GSSAPI */ | |
387 | ||
f7deaa1a | 388 | #ifdef HAVE_AUTHORIZATION_H |
389 | if (con->authref) | |
390 | { | |
391 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
392 | con->authref = NULL; | |
393 | } | |
394 | #endif /* HAVE_AUTHORIZATION_H */ | |
395 | ||
2fb76298 | 396 | if (!*authorization) |
ef416fc2 | 397 | { |
398 | /* | |
399 | * No authorization data provided, return early... | |
400 | */ | |
401 | ||
402 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
403 | "cupsdAuthorize: No authentication data provided."); | |
404 | return; | |
405 | } | |
f7deaa1a | 406 | #ifdef HAVE_AUTHORIZATION_H |
c8fef167 | 407 | else if (!strncmp(authorization, "AuthRef ", 8) && |
88f9aafc | 408 | !_cups_strcasecmp(con->http.hostname, "localhost")) |
f7deaa1a | 409 | { |
410 | OSStatus status; /* Status */ | |
411 | int authlen; /* Auth string length */ | |
412 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
413 | ||
414 | /* | |
415 | * Get the Authorization Services data... | |
416 | */ | |
417 | ||
c8fef167 | 418 | authorization += 8; |
f7deaa1a | 419 | while (isspace(*authorization & 255)) |
420 | authorization ++; | |
421 | ||
422 | authlen = sizeof(nonce); | |
423 | httpDecode64_2(nonce, &authlen, authorization); | |
424 | ||
425 | if (authlen != kAuthorizationExternalFormLength) | |
426 | { | |
427 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 428 | "External Authorization reference size is incorrect!"); |
f7deaa1a | 429 | return; |
430 | } | |
431 | ||
432 | if ((status = AuthorizationCreateFromExternalForm( | |
433 | (AuthorizationExternalForm *)nonce, &con->authref)) != 0) | |
434 | { | |
435 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 436 | "AuthorizationCreateFromExternalForm returned %d (%s)", |
f7deaa1a | 437 | (int)status, cssmErrorString(status)); |
438 | return; | |
439 | } | |
440 | ||
c8fef167 | 441 | username[0] = '\0'; |
ed6e7faf | 442 | |
c8fef167 | 443 | if (!AuthorizationCopyInfo(con->authref, kAuthorizationEnvironmentUsername, |
bf3816c7 | 444 | &authinfo)) |
e4572d57 | 445 | { |
ed6e7faf MS |
446 | if (authinfo->count == 1 && authinfo->items[0].value && |
447 | authinfo->items[0].valueLength >= 2) | |
c8fef167 | 448 | { |
ed6e7faf MS |
449 | strlcpy(username, authinfo->items[0].value, sizeof(username)); |
450 | ||
c8fef167 MS |
451 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
452 | "cupsdAuthorize: Authorized as \"%s\" using AuthRef", | |
453 | username); | |
454 | } | |
455 | ||
e4572d57 | 456 | AuthorizationFreeItemSet(authinfo); |
e4572d57 | 457 | } |
355e94dc | 458 | |
c8fef167 MS |
459 | if (!username[0]) |
460 | { | |
461 | /* | |
462 | * No username in AuthRef, grab username using peer credentials... | |
463 | */ | |
464 | ||
465 | struct passwd *pwd; /* Password entry for this user */ | |
466 | cupsd_ucred_t peercred; /* Peer credentials */ | |
467 | socklen_t peersize; /* Size of peer credentials */ | |
468 | ||
469 | peersize = sizeof(peercred); | |
470 | ||
471 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
472 | { | |
473 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
474 | strerror(errno)); | |
475 | return; | |
476 | } | |
477 | ||
478 | if ((pwd = getpwuid(CUPSD_UCRED_UID(peercred))) == NULL) | |
479 | { | |
480 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
481 | "Unable to find UID %d for peer credentials.", | |
482 | (int)CUPSD_UCRED_UID(peercred)); | |
483 | return; | |
484 | } | |
485 | ||
486 | strlcpy(username, pwd->pw_name, sizeof(username)); | |
487 | ||
488 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
489 | "cupsdAuthorize: Authorized as \"%s\" using " | |
490 | "AuthRef + PeerCred", username); | |
491 | } | |
492 | ||
5bd77a73 | 493 | con->type = CUPSD_AUTH_BASIC; |
f7deaa1a | 494 | } |
495 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 496 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
497 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
498 | con->http.hostaddr->addr.sa_family == AF_LOCAL) | |
499 | { | |
500 | /* | |
501 | * Use peer credentials from domain socket connection... | |
502 | */ | |
503 | ||
504 | struct passwd *pwd; /* Password entry for this user */ | |
505 | cupsd_ucred_t peercred; /* Peer credentials */ | |
506 | socklen_t peersize; /* Size of peer credentials */ | |
f14324a7 MS |
507 | #ifdef HAVE_AUTHORIZATION_H |
508 | const char *name; /* Authorizing name */ | |
bc44d920 | 509 | |
f14324a7 MS |
510 | for (name = (char *)cupsArrayFirst(con->best->names); |
511 | name; | |
512 | name = (char *)cupsArrayNext(con->best->names)) | |
88f9aafc | 513 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9) || !_cups_strcasecmp(name, "@SYSTEM")) |
f14324a7 MS |
514 | { |
515 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
516 | "PeerCred authentication not allowed for resource."); | |
517 | return; | |
518 | } | |
519 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 520 | |
521 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
522 | { | |
f14324a7 | 523 | cupsdLogMessage(CUPSD_LOG_ERROR, "User \"%s\" does not exist.", |
bc44d920 | 524 | authorization + 9); |
525 | return; | |
526 | } | |
527 | ||
528 | peersize = sizeof(peercred); | |
529 | ||
f11a948a MS |
530 | # ifdef __APPLE__ |
531 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
532 | # else | |
bc44d920 | 533 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) |
f11a948a | 534 | # endif /* __APPLE__ */ |
bc44d920 | 535 | { |
536 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
537 | strerror(errno)); | |
538 | return; | |
539 | } | |
540 | ||
541 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
542 | { | |
543 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
544 | "Invalid peer credentials for \"%s\" - got %d, " | |
545 | "expected %d!", authorization + 9, | |
546 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); | |
547 | # ifdef HAVE_SYS_UCRED_H | |
548 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_version=%d", | |
549 | peercred.cr_version); | |
550 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_uid=%d", | |
551 | peercred.cr_uid); | |
552 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_ngroups=%d", | |
553 | peercred.cr_ngroups); | |
554 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_groups[0]=%d", | |
555 | peercred.cr_groups[0]); | |
556 | # endif /* HAVE_SYS_UCRED_H */ | |
557 | return; | |
558 | } | |
559 | ||
560 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc | 561 | |
eac3a0a0 MS |
562 | # ifdef HAVE_GSSAPI |
563 | con->gss_uid = CUPSD_UCRED_UID(peercred); | |
564 | # endif /* HAVE_GSSAPI */ | |
565 | ||
355e94dc MS |
566 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
567 | "cupsdAuthorize: Authorized as %s using PeerCred", | |
568 | username); | |
2fb76298 | 569 | |
5bd77a73 | 570 | con->type = CUPSD_AUTH_BASIC; |
bc44d920 | 571 | } |
572 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 573 | else if (!strncmp(authorization, "Local", 5) && |
88f9aafc | 574 | !_cups_strcasecmp(con->http.hostname, "localhost")) |
ef416fc2 | 575 | { |
576 | /* | |
577 | * Get Local certificate authentication data... | |
578 | */ | |
579 | ||
580 | authorization += 5; | |
80ca4592 | 581 | while (isspace(*authorization & 255)) |
ef416fc2 | 582 | authorization ++; |
583 | ||
584 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
355e94dc | 585 | { |
db0bd74a | 586 | strlcpy(username, localuser->username, sizeof(username)); |
355e94dc MS |
587 | |
588 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
589 | "cupsdAuthorize: Authorized as %s using Local", | |
590 | username); | |
591 | } | |
ef416fc2 | 592 | else |
593 | { | |
594 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
595 | "cupsdAuthorize: Local authentication certificate not " | |
596 | "found!"); | |
597 | return; | |
598 | } | |
2fb76298 | 599 | |
db0bd74a MS |
600 | #ifdef HAVE_GSSAPI |
601 | if (localuser->ccache) | |
602 | con->type = CUPSD_AUTH_NEGOTIATE; | |
603 | else | |
604 | #endif /* HAVE_GSSAPI */ | |
605 | con->type = CUPSD_AUTH_BASIC; | |
ef416fc2 | 606 | } |
2fb76298 | 607 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 608 | { |
609 | /* | |
610 | * Get the Basic authentication data... | |
611 | */ | |
612 | ||
613 | int userlen; /* Username:password length */ | |
614 | ||
615 | ||
616 | authorization += 5; | |
80ca4592 | 617 | while (isspace(*authorization & 255)) |
ef416fc2 | 618 | authorization ++; |
619 | ||
620 | userlen = sizeof(username); | |
621 | httpDecode64_2(username, &userlen, authorization); | |
622 | ||
623 | /* | |
624 | * Pull the username and password out... | |
625 | */ | |
626 | ||
627 | if ((ptr = strchr(username, ':')) == NULL) | |
628 | { | |
629 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
630 | "cupsdAuthorize: Missing Basic password!"); | |
631 | return; | |
632 | } | |
633 | ||
634 | *ptr++ = '\0'; | |
635 | ||
636 | if (!username[0]) | |
637 | { | |
638 | /* | |
639 | * Username must not be empty... | |
640 | */ | |
641 | ||
642 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
643 | "cupsdAuthorize: Empty Basic username!"); | |
644 | return; | |
645 | } | |
646 | ||
647 | if (!*ptr) | |
648 | { | |
649 | /* | |
650 | * Password must not be empty... | |
651 | */ | |
652 | ||
653 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
654 | "cupsdAuthorize: Empty Basic password!"); | |
655 | return; | |
656 | } | |
657 | ||
658 | strlcpy(password, ptr, sizeof(password)); | |
659 | ||
660 | /* | |
661 | * Validate the username and password... | |
662 | */ | |
663 | ||
664 | switch (type) | |
665 | { | |
2fb76298 | 666 | default : |
5bd77a73 | 667 | case CUPSD_AUTH_BASIC : |
ef416fc2 | 668 | { |
669 | #if HAVE_LIBPAM | |
670 | /* | |
671 | * Only use PAM to do authentication. This supports MD5 | |
672 | * passwords, among other things... | |
673 | */ | |
674 | ||
675 | pam_handle_t *pamh; /* PAM authentication handle */ | |
676 | int pamerr; /* PAM error code */ | |
677 | struct pam_conv pamdata;/* PAM conversation data */ | |
678 | cupsd_authdata_t data; /* Authentication data */ | |
679 | ||
680 | ||
681 | strlcpy(data.username, username, sizeof(data.username)); | |
682 | strlcpy(data.password, password, sizeof(data.password)); | |
683 | ||
07725fee | 684 | # if defined(__sun) || defined(__hpux) |
e1d6a774 | 685 | pamdata.conv = (int (*)(int, struct pam_message **, |
686 | struct pam_response **, | |
687 | void *))pam_func; | |
688 | # else | |
ef416fc2 | 689 | pamdata.conv = pam_func; |
07725fee | 690 | # endif /* __sun || __hpux */ |
ef416fc2 | 691 | pamdata.appdata_ptr = &data; |
692 | ||
693 | # ifdef __hpux | |
694 | /* | |
695 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
696 | * more info... | |
697 | */ | |
698 | ||
699 | auth_data = &data; | |
700 | # endif /* __hpux */ | |
701 | ||
702 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
703 | if (pamerr != PAM_SUCCESS) | |
704 | { | |
705 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
75bd9771 | 706 | "cupsdAuthorize: pam_start() returned %d (%s)!", |
ef416fc2 | 707 | pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 708 | return; |
709 | } | |
710 | ||
ee571f26 MS |
711 | # ifdef HAVE_PAM_SET_ITEM |
712 | # ifdef PAM_RHOST | |
a4924f6c MS |
713 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http.hostname); |
714 | if (pamerr != PAM_SUCCESS) | |
715 | cupsdLogMessage(CUPSD_LOG_WARN, | |
ee571f26 MS |
716 | "cupsdAuthorize: pam_set_item(PAM_RHOST) " |
717 | "returned %d (%s)!", pamerr, | |
718 | pam_strerror(pamh, pamerr)); | |
719 | # endif /* PAM_RHOST */ | |
720 | ||
721 | # ifdef PAM_TTY | |
722 | pamerr = pam_set_item(pamh, PAM_TTY, "cups"); | |
723 | if (pamerr != PAM_SUCCESS) | |
724 | cupsdLogMessage(CUPSD_LOG_WARN, | |
725 | "cupsdAuthorize: pam_set_item(PAM_TTY) " | |
726 | "returned %d (%s)!", pamerr, | |
727 | pam_strerror(pamh, pamerr)); | |
728 | # endif /* PAM_TTY */ | |
729 | # endif /* HAVE_PAM_SET_ITEM */ | |
730 | ||
ef416fc2 | 731 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
732 | if (pamerr != PAM_SUCCESS) | |
733 | { | |
734 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
735 | "cupsdAuthorize: pam_authenticate() returned %d " | |
75bd9771 | 736 | "(%s)!", |
ef416fc2 | 737 | pamerr, pam_strerror(pamh, pamerr)); |
738 | pam_end(pamh, 0); | |
739 | return; | |
740 | } | |
741 | ||
94da7e34 MS |
742 | # ifdef HAVE_PAM_SETCRED |
743 | pamerr = pam_setcred(pamh, PAM_ESTABLISH_CRED | PAM_SILENT); | |
744 | if (pamerr != PAM_SUCCESS) | |
745 | cupsdLogMessage(CUPSD_LOG_WARN, | |
746 | "cupsdAuthorize: pam_setcred() " | |
747 | "returned %d (%s)!", pamerr, | |
748 | pam_strerror(pamh, pamerr)); | |
749 | # endif /* HAVE_PAM_SETCRED */ | |
750 | ||
ef416fc2 | 751 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); |
752 | if (pamerr != PAM_SUCCESS) | |
753 | { | |
754 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
755 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
75bd9771 | 756 | "(%s)!", |
ef416fc2 | 757 | pamerr, pam_strerror(pamh, pamerr)); |
758 | pam_end(pamh, 0); | |
759 | return; | |
760 | } | |
761 | ||
762 | pam_end(pamh, PAM_SUCCESS); | |
763 | ||
764 | #elif defined(HAVE_USERSEC_H) | |
765 | /* | |
766 | * Use AIX authentication interface... | |
767 | */ | |
768 | ||
769 | char *authmsg; /* Authentication message */ | |
ef416fc2 | 770 | int reenter; /* ??? */ |
771 | ||
772 | ||
773 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
75bd9771 MS |
774 | "cupsdAuthorize: AIX authenticate of username " |
775 | "\"%s\"", username); | |
ef416fc2 | 776 | |
777 | reenter = 1; | |
778 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
779 | { | |
780 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
781 | "cupsdAuthorize: Unable to authenticate username " | |
782 | "\"%s\": %s", | |
783 | username, strerror(errno)); | |
784 | return; | |
785 | } | |
786 | ||
787 | #else | |
788 | /* | |
789 | * Use normal UNIX password file-based authentication... | |
790 | */ | |
791 | ||
792 | char *pass; /* Encrypted password */ | |
793 | struct passwd *pw; /* User password data */ | |
794 | # ifdef HAVE_SHADOW_H | |
795 | struct spwd *spw; /* Shadow password data */ | |
796 | # endif /* HAVE_SHADOW_H */ | |
797 | ||
798 | ||
799 | pw = getpwnam(username); /* Get the current password */ | |
800 | endpwent(); /* Close the password file */ | |
801 | ||
802 | if (!pw) | |
803 | { | |
804 | /* | |
805 | * No such user... | |
806 | */ | |
807 | ||
808 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
809 | "cupsdAuthorize: Unknown username \"%s\"!", | |
810 | username); | |
80ca4592 | 811 | return; |
ef416fc2 | 812 | } |
813 | ||
814 | # ifdef HAVE_SHADOW_H | |
815 | spw = getspnam(username); | |
816 | endspent(); | |
817 | ||
818 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
819 | { | |
820 | /* | |
821 | * Don't allow blank passwords! | |
822 | */ | |
823 | ||
824 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
825 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
826 | "password!", username); | |
827 | return; | |
828 | } | |
829 | ||
830 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
831 | # else | |
832 | if (!pw->pw_passwd[0]) | |
833 | # endif /* HAVE_SHADOW_H */ | |
834 | { | |
835 | /* | |
836 | * Don't allow blank passwords! | |
837 | */ | |
838 | ||
839 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
840 | "cupsdAuthorize: Username \"%s\" has no password!", | |
841 | username); | |
842 | return; | |
843 | } | |
844 | ||
845 | /* | |
846 | * OK, the password isn't blank, so compare with what came from the | |
847 | * client... | |
848 | */ | |
849 | ||
850 | pass = cups_crypt(password, pw->pw_passwd); | |
851 | ||
852 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
853 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
854 | pw->pw_passwd, pass); | |
855 | ||
856 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
857 | { | |
858 | # ifdef HAVE_SHADOW_H | |
859 | if (spw) | |
860 | { | |
861 | pass = cups_crypt(password, spw->sp_pwdp); | |
862 | ||
863 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
864 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
865 | spw->sp_pwdp, pass); | |
866 | ||
867 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
868 | { | |
869 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
870 | "cupsdAuthorize: Authentication failed for " | |
871 | "user \"%s\"!", | |
872 | username); | |
873 | return; | |
874 | } | |
875 | } | |
876 | else | |
877 | # endif /* HAVE_SHADOW_H */ | |
878 | { | |
879 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
880 | "cupsdAuthorize: Authentication failed for " | |
881 | "user \"%s\"!", | |
882 | username); | |
883 | return; | |
884 | } | |
885 | } | |
886 | #endif /* HAVE_LIBPAM */ | |
887 | } | |
355e94dc MS |
888 | |
889 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
890 | "cupsdAuthorize: Authorized as %s using Basic", | |
891 | username); | |
ef416fc2 | 892 | break; |
893 | ||
5bd77a73 | 894 | case CUPSD_AUTH_BASICDIGEST : |
ef416fc2 | 895 | /* |
896 | * Do Basic authentication with the Digest password file... | |
897 | */ | |
898 | ||
e1d6a774 | 899 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 900 | { |
901 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
902 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
903 | username); | |
904 | return; | |
905 | } | |
906 | ||
907 | httpMD5(username, "CUPS", password, basicmd5); | |
908 | ||
909 | if (strcmp(md5, basicmd5)) | |
910 | { | |
911 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
912 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
913 | username); | |
914 | return; | |
915 | } | |
355e94dc MS |
916 | |
917 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
918 | "cupsdAuthorize: Authorized as %s using BasicDigest", | |
919 | username); | |
ef416fc2 | 920 | break; |
921 | } | |
2fb76298 MS |
922 | |
923 | con->type = type; | |
ef416fc2 | 924 | } |
2fb76298 | 925 | else if (!strncmp(authorization, "Digest", 6)) |
ef416fc2 | 926 | { |
927 | /* | |
928 | * Get the username, password, and nonce from the Digest attributes... | |
929 | */ | |
930 | ||
931 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
932 | username, sizeof(username)) || !username[0]) | |
933 | { | |
934 | /* | |
935 | * Username must not be empty... | |
936 | */ | |
937 | ||
938 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
939 | "cupsdAuthorize: Empty or missing Digest username!"); | |
940 | return; | |
941 | } | |
942 | ||
943 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
944 | password, sizeof(password)) || !password[0]) | |
945 | { | |
946 | /* | |
947 | * Password must not be empty... | |
948 | */ | |
949 | ||
950 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
951 | "cupsdAuthorize: Empty or missing Digest password!"); | |
952 | return; | |
953 | } | |
954 | ||
955 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
956 | nonce)) | |
957 | { | |
958 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
959 | "cupsdAuthorize: No nonce value for Digest " | |
960 | "authentication!"); | |
961 | return; | |
962 | } | |
963 | ||
964 | if (strcmp(con->http.hostname, nonce)) | |
965 | { | |
966 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
967 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
968 | "got \"%s\"!", con->http.hostname, nonce); | |
969 | return; | |
970 | } | |
971 | ||
972 | /* | |
973 | * Validate the username and password... | |
974 | */ | |
975 | ||
e1d6a774 | 976 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 977 | { |
978 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
979 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
980 | username); | |
981 | return; | |
982 | } | |
983 | ||
984 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
985 | ||
986 | if (strcmp(md5, password)) | |
987 | { | |
988 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
989 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
990 | username); | |
991 | return; | |
992 | } | |
355e94dc MS |
993 | |
994 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
995 | "cupsdAuthorize: Authorized as %s using Digest", | |
996 | username); | |
2fb76298 | 997 | |
5bd77a73 | 998 | con->type = CUPSD_AUTH_DIGEST; |
ef416fc2 | 999 | } |
f7deaa1a | 1000 | #ifdef HAVE_GSSAPI |
c8fef167 | 1001 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 1002 | { |
1003 | int len; /* Length of authorization string */ | |
f7deaa1a | 1004 | gss_ctx_id_t context; /* Authorization context */ |
1005 | OM_uint32 major_status, /* Major status code */ | |
1006 | minor_status; /* Minor status code */ | |
1007 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
1008 | /* Input token from string */ | |
1009 | output_token = GSS_C_EMPTY_BUFFER; | |
1010 | /* Output token for username */ | |
1011 | gss_name_t client_name; /* Client name */ | |
1012 | ||
1013 | ||
f42414bf | 1014 | # ifdef __APPLE__ |
1015 | /* | |
1016 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
1017 | * to use it... | |
1018 | */ | |
1019 | ||
1020 | if (gss_init_sec_context == NULL) | |
1021 | { | |
1022 | cupsdLogMessage(CUPSD_LOG_WARN, | |
1023 | "GSSAPI/Kerberos authentication failed because the " | |
1024 | "Kerberos framework is not present."); | |
1025 | return; | |
1026 | } | |
1027 | # endif /* __APPLE__ */ | |
1028 | ||
f7deaa1a | 1029 | /* |
1030 | * Find the start of the Kerberos input token... | |
1031 | */ | |
1032 | ||
1033 | authorization += 9; | |
1034 | while (isspace(*authorization & 255)) | |
1035 | authorization ++; | |
1036 | ||
1037 | if (!*authorization) | |
1038 | { | |
1039 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
c7017ecc | 1040 | "cupsdAuthorize: No authentication data specified."); |
f7deaa1a | 1041 | return; |
1042 | } | |
1043 | ||
f7deaa1a | 1044 | /* |
1045 | * Decode the authorization string to get the input token... | |
1046 | */ | |
1047 | ||
1048 | len = strlen(authorization); | |
1049 | input_token.value = malloc(len); | |
1050 | input_token.value = httpDecode64_2(input_token.value, &len, | |
c7017ecc | 1051 | authorization); |
f7deaa1a | 1052 | input_token.length = len; |
1053 | ||
1054 | /* | |
1055 | * Accept the input token to get the authorization info... | |
1056 | */ | |
1057 | ||
1058 | context = GSS_C_NO_CONTEXT; | |
1059 | client_name = GSS_C_NO_NAME; | |
1060 | major_status = gss_accept_sec_context(&minor_status, | |
1061 | &context, | |
c8fef167 | 1062 | GSS_C_NO_CREDENTIAL, |
f7deaa1a | 1063 | &input_token, |
1064 | GSS_C_NO_CHANNEL_BINDINGS, | |
1065 | &client_name, | |
1066 | NULL, | |
07ed0e9a MS |
1067 | &output_token, |
1068 | NULL, | |
f7deaa1a | 1069 | NULL, |
07ed0e9a MS |
1070 | NULL); |
1071 | ||
1072 | if (output_token.length > 0) | |
1073 | gss_release_buffer(&minor_status, &output_token); | |
f7deaa1a | 1074 | |
1075 | if (GSS_ERROR(major_status)) | |
1076 | { | |
1077 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
c7017ecc | 1078 | "cupsdAuthorize: Error accepting GSSAPI security " |
f7deaa1a | 1079 | "context"); |
1080 | ||
1081 | if (context != GSS_C_NO_CONTEXT) | |
1082 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1083 | return; |
1084 | } | |
1085 | ||
97c9a8d7 MS |
1086 | con->have_gss = 1; |
1087 | ||
76cd9e37 MS |
1088 | /* |
1089 | * Get the username associated with the client's credentials... | |
f7deaa1a | 1090 | */ |
1091 | ||
355e94dc MS |
1092 | if (major_status == GSS_S_CONTINUE_NEEDED) |
1093 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
e07d4801 | 1094 | "cupsdAuthorize: Credentials not complete"); |
355e94dc | 1095 | else if (major_status == GSS_S_COMPLETE) |
f7deaa1a | 1096 | { |
c8fef167 | 1097 | major_status = gss_display_name(&minor_status, client_name, |
f7deaa1a | 1098 | &output_token, NULL); |
1099 | ||
1100 | if (GSS_ERROR(major_status)) | |
1101 | { | |
1102 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
c7017ecc | 1103 | "cupsdAuthorize: Error getting username"); |
f7deaa1a | 1104 | gss_release_name(&minor_status, &client_name); |
1105 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1106 | return; |
1107 | } | |
1108 | ||
f7deaa1a | 1109 | strlcpy(username, output_token.value, sizeof(username)); |
355e94dc MS |
1110 | |
1111 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1112 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1113 | username); | |
f7deaa1a | 1114 | |
e07d4801 | 1115 | gss_release_name(&minor_status, &client_name); |
f7deaa1a | 1116 | gss_release_buffer(&minor_status, &output_token); |
2fb76298 | 1117 | |
5bd77a73 | 1118 | con->type = CUPSD_AUTH_NEGOTIATE; |
f7deaa1a | 1119 | } |
e07d4801 MS |
1120 | |
1121 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
07ed0e9a MS |
1122 | |
1123 | # if defined(SO_PEERCRED) && defined(AF_LOCAL) | |
1124 | /* | |
1125 | * Get the client's UID if we are printing locally - that allows a backend | |
1126 | * to run as the correct user to get Kerberos credentials of its own. | |
1127 | */ | |
1128 | ||
eac3a0a0 | 1129 | if (_httpAddrFamily(con->http.hostaddr) == AF_LOCAL) |
07ed0e9a MS |
1130 | { |
1131 | cupsd_ucred_t peercred; /* Peer credentials */ | |
1132 | socklen_t peersize; /* Size of peer credentials */ | |
1133 | ||
1134 | peersize = sizeof(peercred); | |
1135 | ||
1136 | # ifdef __APPLE__ | |
1137 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
1138 | # else | |
1139 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, | |
1140 | &peersize)) | |
1141 | # endif /* __APPLE__ */ | |
1142 | { | |
1143 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
1144 | strerror(errno)); | |
1145 | } | |
1146 | else | |
1147 | { | |
1148 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1149 | "cupsdAuthorize: Using credentials for UID %d...", | |
1150 | CUPSD_UCRED_UID(peercred)); | |
1151 | con->gss_uid = CUPSD_UCRED_UID(peercred); | |
1152 | } | |
1153 | } | |
1154 | # endif /* SO_PEERCRED && AF_LOCAL */ | |
f7deaa1a | 1155 | } |
1156 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 1157 | else |
ef416fc2 | 1158 | { |
355e94dc | 1159 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
1160 | |
1161 | ||
1162 | if (sscanf(authorization, "%255s", scheme) != 1) | |
1163 | strcpy(scheme, "UNKNOWN"); | |
1164 | ||
2fb76298 MS |
1165 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\"", |
1166 | scheme); | |
ef416fc2 | 1167 | return; |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * If we get here, then we were able to validate the username and | |
1172 | * password - copy the validated username and password to the client | |
1173 | * data and return... | |
1174 | */ | |
1175 | ||
1176 | strlcpy(con->username, username, sizeof(con->username)); | |
1177 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1178 | } |
1179 | ||
1180 | ||
080811b1 MS |
1181 | /* |
1182 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
1183 | * access a location. | |
1184 | */ | |
1185 | ||
1186 | int /* O - 1 if allowed, 0 otherwise */ | |
1187 | cupsdCheckAccess( | |
1188 | unsigned ip[4], /* I - Client address */ | |
1189 | char *name, /* I - Client hostname */ | |
1190 | int namelen, /* I - Length of hostname */ | |
1191 | cupsd_location_t *loc) /* I - Location to check */ | |
1192 | { | |
1193 | int allow; /* 1 if allowed, 0 otherwise */ | |
1194 | ||
1195 | ||
88f9aafc | 1196 | if (!_cups_strcasecmp(name, "localhost")) |
080811b1 MS |
1197 | { |
1198 | /* | |
1199 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
1200 | */ | |
1201 | ||
1202 | return (1); | |
1203 | } | |
1204 | else | |
1205 | { | |
1206 | /* | |
1207 | * Do authorization checks on the domain/address... | |
1208 | */ | |
1209 | ||
1210 | switch (loc->order_type) | |
1211 | { | |
1212 | default : | |
1213 | allow = 0; /* anti-compiler-warning-code */ | |
1214 | break; | |
1215 | ||
5bd77a73 | 1216 | case CUPSD_AUTH_ALLOW : /* Order Deny,Allow */ |
080811b1 MS |
1217 | allow = 1; |
1218 | ||
10d09e33 | 1219 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
1220 | allow = 0; |
1221 | ||
10d09e33 | 1222 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
1223 | allow = 1; |
1224 | break; | |
1225 | ||
5bd77a73 | 1226 | case CUPSD_AUTH_DENY : /* Order Allow,Deny */ |
080811b1 MS |
1227 | allow = 0; |
1228 | ||
10d09e33 | 1229 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
1230 | allow = 1; |
1231 | ||
10d09e33 | 1232 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
1233 | allow = 0; |
1234 | break; | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | return (allow); | |
1239 | } | |
1240 | ||
1241 | ||
ef416fc2 | 1242 | /* |
1243 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1244 | */ | |
1245 | ||
1246 | int /* O - 1 if mask matches, 0 otherwise */ | |
10d09e33 MS |
1247 | cupsdCheckAuth(unsigned ip[4], /* I - Client address */ |
1248 | char *name, /* I - Client hostname */ | |
1249 | int name_len, /* I - Length of hostname */ | |
1250 | cups_array_t *masks) /* I - Masks */ | |
ef416fc2 | 1251 | { |
10d09e33 MS |
1252 | int i; /* Looping var */ |
1253 | cupsd_authmask_t *mask; /* Current mask */ | |
1254 | cupsd_netif_t *iface; /* Network interface */ | |
1255 | unsigned netip4; /* IPv4 network address */ | |
ef416fc2 | 1256 | #ifdef AF_INET6 |
10d09e33 | 1257 | unsigned netip6[4]; /* IPv6 network address */ |
ef416fc2 | 1258 | #endif /* AF_INET6 */ |
1259 | ||
e07d4801 | 1260 | |
10d09e33 MS |
1261 | for (mask = (cupsd_authmask_t *)cupsArrayFirst(masks); |
1262 | mask; | |
1263 | mask = (cupsd_authmask_t *)cupsArrayNext(masks)) | |
ef416fc2 | 1264 | { |
10d09e33 | 1265 | switch (mask->type) |
ef416fc2 | 1266 | { |
5bd77a73 | 1267 | case CUPSD_AUTH_INTERFACE : |
ef416fc2 | 1268 | /* |
1269 | * Check for a match with a network interface... | |
1270 | */ | |
1271 | ||
1272 | netip4 = htonl(ip[3]); | |
1273 | ||
1274 | #ifdef AF_INET6 | |
1275 | netip6[0] = htonl(ip[0]); | |
1276 | netip6[1] = htonl(ip[1]); | |
1277 | netip6[2] = htonl(ip[2]); | |
1278 | netip6[3] = htonl(ip[3]); | |
1279 | #endif /* AF_INET6 */ | |
1280 | ||
10d09e33 | 1281 | if (!strcmp(mask->mask.name.name, "*")) |
ef416fc2 | 1282 | { |
e07d4801 MS |
1283 | #ifdef __APPLE__ |
1284 | /* | |
1285 | * Allow Back-to-My-Mac addresses... | |
1286 | */ | |
1287 | ||
1288 | if ((ip[0] & 0xff000000) == 0xfd000000) | |
1289 | return (1); | |
1290 | #endif /* __APPLE__ */ | |
1291 | ||
ef416fc2 | 1292 | /* |
1293 | * Check against all local interfaces... | |
1294 | */ | |
1295 | ||
1296 | cupsdNetIFUpdate(); | |
1297 | ||
e00b005a | 1298 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1299 | iface; | |
1300 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1301 | { |
1302 | /* | |
1303 | * Only check local interfaces... | |
1304 | */ | |
1305 | ||
1306 | if (!iface->is_local) | |
1307 | continue; | |
1308 | ||
1309 | if (iface->address.addr.sa_family == AF_INET) | |
1310 | { | |
1311 | /* | |
1312 | * Check IPv4 address... | |
1313 | */ | |
1314 | ||
1315 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1316 | (iface->address.ipv4.sin_addr.s_addr & | |
1317 | iface->mask.ipv4.sin_addr.s_addr)) | |
1318 | return (1); | |
1319 | } | |
1320 | #ifdef AF_INET6 | |
1321 | else | |
1322 | { | |
1323 | /* | |
1324 | * Check IPv6 address... | |
1325 | */ | |
1326 | ||
1327 | for (i = 0; i < 4; i ++) | |
1328 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1329 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1330 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1331 | break; | |
1332 | ||
1333 | if (i == 4) | |
1334 | return (1); | |
1335 | } | |
1336 | #endif /* AF_INET6 */ | |
1337 | } | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | /* | |
1342 | * Check the named interface... | |
1343 | */ | |
1344 | ||
e00b005a | 1345 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1346 | iface; |
e00b005a | 1347 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1348 | { |
10d09e33 | 1349 | if (strcmp(mask->mask.name.name, iface->name)) |
ed486911 | 1350 | continue; |
1351 | ||
ef416fc2 | 1352 | if (iface->address.addr.sa_family == AF_INET) |
1353 | { | |
1354 | /* | |
1355 | * Check IPv4 address... | |
1356 | */ | |
1357 | ||
1358 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1359 | (iface->address.ipv4.sin_addr.s_addr & | |
1360 | iface->mask.ipv4.sin_addr.s_addr)) | |
1361 | return (1); | |
1362 | } | |
1363 | #ifdef AF_INET6 | |
1364 | else | |
1365 | { | |
1366 | /* | |
1367 | * Check IPv6 address... | |
1368 | */ | |
1369 | ||
1370 | for (i = 0; i < 4; i ++) | |
1371 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1372 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1373 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1374 | break; | |
1375 | ||
1376 | if (i == 4) | |
1377 | return (1); | |
1378 | } | |
1379 | #endif /* AF_INET6 */ | |
1380 | } | |
1381 | } | |
1382 | break; | |
1383 | ||
5bd77a73 | 1384 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1385 | /* |
1386 | * Check for exact name match... | |
1387 | */ | |
1388 | ||
88f9aafc | 1389 | if (!_cups_strcasecmp(name, mask->mask.name.name)) |
ef416fc2 | 1390 | return (1); |
1391 | ||
1392 | /* | |
1393 | * Check for domain match... | |
1394 | */ | |
1395 | ||
10d09e33 MS |
1396 | if (name_len >= mask->mask.name.length && |
1397 | mask->mask.name.name[0] == '.' && | |
88f9aafc | 1398 | !_cups_strcasecmp(name + name_len - mask->mask.name.length, |
10d09e33 | 1399 | mask->mask.name.name)) |
ef416fc2 | 1400 | return (1); |
1401 | break; | |
1402 | ||
5bd77a73 | 1403 | case CUPSD_AUTH_IP : |
ef416fc2 | 1404 | /* |
1405 | * Check for IP/network address match... | |
1406 | */ | |
1407 | ||
1408 | for (i = 0; i < 4; i ++) | |
10d09e33 MS |
1409 | if ((ip[i] & mask->mask.ip.netmask[i]) != |
1410 | mask->mask.ip.address[i]) | |
ef416fc2 | 1411 | break; |
1412 | ||
1413 | if (i == 4) | |
1414 | return (1); | |
1415 | break; | |
1416 | } | |
ef416fc2 | 1417 | } |
1418 | ||
1419 | return (0); | |
1420 | } | |
1421 | ||
1422 | ||
1423 | /* | |
1424 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1425 | */ | |
1426 | ||
1427 | int /* O - 1 if user is a member, 0 otherwise */ | |
1428 | cupsdCheckGroup( | |
1429 | const char *username, /* I - User name */ | |
1430 | struct passwd *user, /* I - System user info */ | |
1431 | const char *groupname) /* I - Group name */ | |
1432 | { | |
8922323b MS |
1433 | int i; /* Looping var */ |
1434 | struct group *group; /* System group info */ | |
1435 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 1436 | #ifdef HAVE_MBR_UID_TO_UUID |
8922323b MS |
1437 | uuid_t useruuid, /* UUID for username */ |
1438 | groupuuid; /* UUID for groupname */ | |
1439 | int is_member; /* True if user is a member of group */ | |
bd7854cb | 1440 | #endif /* HAVE_MBR_UID_TO_UUID */ |
ef416fc2 | 1441 | |
1442 | ||
1443 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1444 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1445 | username, user, groupname); | |
1446 | ||
1447 | /* | |
1448 | * Validate input... | |
1449 | */ | |
1450 | ||
1451 | if (!username || !groupname) | |
1452 | return (0); | |
1453 | ||
1454 | /* | |
1455 | * Check to see if the user is a member of the named group... | |
1456 | */ | |
1457 | ||
1458 | group = getgrnam(groupname); | |
1459 | endgrent(); | |
1460 | ||
1461 | if (group != NULL) | |
1462 | { | |
1463 | /* | |
1464 | * Group exists, check it... | |
1465 | */ | |
1466 | ||
1467 | for (i = 0; group->gr_mem[i]; i ++) | |
88f9aafc | 1468 | if (!_cups_strcasecmp(username, group->gr_mem[i])) |
ef416fc2 | 1469 | return (1); |
1470 | } | |
1471 | ||
1472 | /* | |
1473 | * Group doesn't exist or user not in group list, check the group ID | |
1474 | * against the user's group ID... | |
1475 | */ | |
1476 | ||
1477 | if (user && group && group->gr_gid == user->pw_gid) | |
1478 | return (1); | |
1479 | ||
bd7854cb | 1480 | #ifdef HAVE_MBR_UID_TO_UUID |
1481 | /* | |
1482 | * Check group membership through MacOS X membership API... | |
1483 | */ | |
1484 | ||
dd1abb6b | 1485 | if (user && !mbr_uid_to_uuid(user->pw_uid, useruuid)) |
c9fc04c6 | 1486 | { |
8922323b MS |
1487 | if (group) |
1488 | { | |
1489 | /* | |
1490 | * Map group name to UUID and check membership... | |
1491 | */ | |
c9fc04c6 | 1492 | |
8922323b MS |
1493 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) |
1494 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1495 | if (is_member) | |
1496 | return (1); | |
1497 | } | |
1498 | else if (groupname[0] == '#') | |
1499 | { | |
1500 | /* | |
1501 | * Use UUID directly and check for equality (user UUID) and | |
1502 | * membership (group UUID)... | |
1503 | */ | |
1504 | ||
1505 | if (!uuid_parse((char *)groupname + 1, groupuuid)) | |
1506 | { | |
1507 | if (!uuid_compare(useruuid, groupuuid)) | |
c9fc04c6 | 1508 | return (1); |
8922323b MS |
1509 | else if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1510 | if (is_member) | |
1511 | return (1); | |
1512 | } | |
1513 | ||
1514 | return (0); | |
1515 | } | |
1516 | } | |
1517 | else if (groupname[0] == '#') | |
1518 | return (0); | |
bd7854cb | 1519 | #endif /* HAVE_MBR_UID_TO_UUID */ |
1520 | ||
ef416fc2 | 1521 | /* |
1522 | * Username not found, group not found, or user is not part of the | |
1523 | * system group... Check for a user and group in the MD5 password | |
1524 | * file... | |
1525 | */ | |
1526 | ||
e1d6a774 | 1527 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1528 | return (1); |
1529 | ||
1530 | /* | |
1531 | * If we get this far, then the user isn't part of the named group... | |
1532 | */ | |
1533 | ||
1534 | return (0); | |
1535 | } | |
1536 | ||
1537 | ||
1538 | /* | |
1539 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1540 | */ | |
1541 | ||
1542 | cupsd_location_t * /* O - New location */ | |
1543 | cupsdCopyLocation( | |
10d09e33 | 1544 | cupsd_location_t *loc) /* I - Original location */ |
ef416fc2 | 1545 | { |
ef416fc2 | 1546 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 1547 | |
1548 | ||
ef416fc2 | 1549 | /* |
10d09e33 | 1550 | * Make a copy of the original location... |
ef416fc2 | 1551 | */ |
1552 | ||
10d09e33 | 1553 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 1554 | return (NULL); |
1555 | ||
ef416fc2 | 1556 | /* |
1557 | * Copy the information from the original location to the new one. | |
1558 | */ | |
1559 | ||
10d09e33 MS |
1560 | if (!loc) |
1561 | return (temp); | |
ef416fc2 | 1562 | |
10d09e33 MS |
1563 | if (loc->location) |
1564 | temp->location = _cupsStrAlloc(loc->location); | |
ef416fc2 | 1565 | |
10d09e33 MS |
1566 | temp->limit = loc->limit; |
1567 | temp->order_type = loc->order_type; | |
1568 | temp->type = loc->type; | |
1569 | temp->level = loc->level; | |
1570 | temp->satisfy = loc->satisfy; | |
1571 | temp->encryption = loc->encryption; | |
1572 | ||
1573 | if (loc->names) | |
1574 | { | |
1575 | if ((temp->names = cupsArrayDup(loc->names)) == NULL) | |
ef416fc2 | 1576 | { |
1577 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1578 | "Unable to allocate memory for %d names: %s", |
1579 | cupsArrayCount(loc->names), strerror(errno)); | |
bd7854cb | 1580 | |
10d09e33 | 1581 | cupsdFreeLocation(temp); |
ef416fc2 | 1582 | return (NULL); |
1583 | } | |
ef416fc2 | 1584 | } |
1585 | ||
10d09e33 | 1586 | if (loc->allow) |
ef416fc2 | 1587 | { |
1588 | /* | |
1589 | * Copy allow rules... | |
1590 | */ | |
1591 | ||
10d09e33 | 1592 | if ((temp->allow = cupsArrayDup(loc->allow)) == NULL) |
ef416fc2 | 1593 | { |
1594 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1595 | "Unable to allocate memory for %d allow rules: %s", |
1596 | cupsArrayCount(loc->allow), strerror(errno)); | |
1597 | cupsdFreeLocation(temp); | |
ef416fc2 | 1598 | return (NULL); |
1599 | } | |
ef416fc2 | 1600 | } |
1601 | ||
10d09e33 | 1602 | if (loc->deny) |
ef416fc2 | 1603 | { |
1604 | /* | |
1605 | * Copy deny rules... | |
1606 | */ | |
1607 | ||
10d09e33 | 1608 | if ((temp->deny = cupsArrayDup(loc->deny)) == NULL) |
ef416fc2 | 1609 | { |
1610 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1611 | "Unable to allocate memory for %d deny rules: %s", |
1612 | cupsArrayCount(loc->deny), strerror(errno)); | |
1613 | cupsdFreeLocation(temp); | |
ef416fc2 | 1614 | return (NULL); |
1615 | } | |
ef416fc2 | 1616 | } |
1617 | ||
1618 | return (temp); | |
1619 | } | |
1620 | ||
1621 | ||
1622 | /* | |
1623 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1624 | */ | |
1625 | ||
1626 | void | |
1627 | cupsdDeleteAllLocations(void) | |
1628 | { | |
ef416fc2 | 1629 | /* |
10d09e33 | 1630 | * Free the location array, which will free all of the locations... |
ef416fc2 | 1631 | */ |
1632 | ||
bd7854cb | 1633 | cupsArrayDelete(Locations); |
1634 | Locations = NULL; | |
ef416fc2 | 1635 | } |
1636 | ||
1637 | ||
ef416fc2 | 1638 | /* |
1639 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1640 | */ | |
1641 | ||
1642 | cupsd_location_t * /* O - Location that matches */ | |
1643 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1644 | http_state_t state) /* I - HTTP state/request */ | |
1645 | { | |
ef416fc2 | 1646 | char uri[HTTP_MAX_URI], |
1647 | /* URI in request... */ | |
1648 | *uriptr; /* Pointer into URI */ | |
1649 | cupsd_location_t *loc, /* Current location */ | |
1650 | *best; /* Best match for location so far */ | |
1651 | int bestlen; /* Length of best match */ | |
1652 | int limit; /* Limit field */ | |
5bd77a73 | 1653 | static const int limits[] = /* Map http_status_t to CUPSD_AUTH_LIMIT_xyz */ |
ef416fc2 | 1654 | { |
5bd77a73 MS |
1655 | CUPSD_AUTH_LIMIT_ALL, |
1656 | CUPSD_AUTH_LIMIT_OPTIONS, | |
1657 | CUPSD_AUTH_LIMIT_GET, | |
1658 | CUPSD_AUTH_LIMIT_GET, | |
1659 | CUPSD_AUTH_LIMIT_HEAD, | |
1660 | CUPSD_AUTH_LIMIT_POST, | |
1661 | CUPSD_AUTH_LIMIT_POST, | |
1662 | CUPSD_AUTH_LIMIT_POST, | |
1663 | CUPSD_AUTH_LIMIT_PUT, | |
1664 | CUPSD_AUTH_LIMIT_PUT, | |
1665 | CUPSD_AUTH_LIMIT_DELETE, | |
1666 | CUPSD_AUTH_LIMIT_TRACE, | |
1667 | CUPSD_AUTH_LIMIT_ALL, | |
1668 | CUPSD_AUTH_LIMIT_ALL | |
ef416fc2 | 1669 | }; |
1670 | ||
1671 | ||
1672 | /* | |
1673 | * First copy the connection URI to a local string so we have drop | |
1674 | * any .ppd extension from the pathname in /printers or /classes | |
1675 | * URIs... | |
1676 | */ | |
1677 | ||
1678 | strlcpy(uri, path, sizeof(uri)); | |
1679 | ||
1680 | if (!strncmp(uri, "/printers/", 10) || | |
1681 | !strncmp(uri, "/classes/", 9)) | |
1682 | { | |
1683 | /* | |
1684 | * Check if the URI has .ppd on the end... | |
1685 | */ | |
1686 | ||
1687 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1688 | ||
1689 | if (!strcmp(uriptr, ".ppd")) | |
1690 | *uriptr = '\0'; | |
1691 | } | |
1692 | ||
1693 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1694 | ||
1695 | /* | |
1696 | * Loop through the list of locations to find a match... | |
1697 | */ | |
1698 | ||
1699 | limit = limits[state]; | |
1700 | best = NULL; | |
1701 | bestlen = 0; | |
1702 | ||
bd7854cb | 1703 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1704 | loc; | |
1705 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1706 | { |
1707 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1708 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1709 | |
1710 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1711 | { | |
1712 | /* | |
1713 | * Use case-insensitive comparison for queue names... | |
1714 | */ | |
1715 | ||
e1d6a774 | 1716 | if (loc->length > bestlen && loc->location && |
88f9aafc | 1717 | !_cups_strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1718 | loc->location[0] == '/' && |
1719 | (limit & loc->limit) != 0) | |
1720 | { | |
1721 | best = loc; | |
1722 | bestlen = loc->length; | |
1723 | } | |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | /* | |
1728 | * Use case-sensitive comparison for other URIs... | |
1729 | */ | |
1730 | ||
e1d6a774 | 1731 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1732 | !strncmp(uri, loc->location, loc->length) && |
1733 | loc->location[0] == '/' && | |
1734 | (limit & loc->limit) != 0) | |
1735 | { | |
1736 | best = loc; | |
1737 | bestlen = loc->length; | |
1738 | } | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | /* | |
1743 | * Return the match, if any... | |
1744 | */ | |
1745 | ||
1746 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1747 | best ? best->location : "NONE"); | |
1748 | ||
1749 | return (best); | |
1750 | } | |
1751 | ||
1752 | ||
1753 | /* | |
1754 | * 'cupsdFindLocation()' - Find the named location. | |
1755 | */ | |
1756 | ||
1757 | cupsd_location_t * /* O - Location that matches */ | |
1758 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1759 | { | |
bd7854cb | 1760 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1761 | |
1762 | ||
bd7854cb | 1763 | key.location = (char *)location; |
ef416fc2 | 1764 | |
bd7854cb | 1765 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1766 | } |
1767 | ||
1768 | ||
10d09e33 MS |
1769 | /* |
1770 | * 'cupsdFreeLocation()' - Free all memory used by a location. | |
1771 | */ | |
1772 | ||
1773 | void | |
1774 | cupsdFreeLocation(cupsd_location_t *loc)/* I - Location to free */ | |
1775 | { | |
1776 | cupsArrayDelete(loc->names); | |
1777 | cupsArrayDelete(loc->allow); | |
1778 | cupsArrayDelete(loc->deny); | |
1779 | ||
1780 | _cupsStrFree(loc->location); | |
1781 | free(loc); | |
1782 | } | |
1783 | ||
1784 | ||
ef416fc2 | 1785 | /* |
1786 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1787 | */ | |
1788 | ||
1789 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1790 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1791 | const char *owner)/* I - Owner of object */ | |
1792 | { | |
10d09e33 | 1793 | int i, /* Looping vars */ |
2fb76298 MS |
1794 | auth, /* Authorization status */ |
1795 | type; /* Type of authentication */ | |
ef416fc2 | 1796 | unsigned address[4]; /* Authorization address */ |
1797 | cupsd_location_t *best; /* Best match for location so far */ | |
1798 | int hostlen; /* Length of hostname */ | |
10d09e33 MS |
1799 | char *name, /* Current username */ |
1800 | username[256], /* Username to authorize */ | |
db1f069b MS |
1801 | ownername[256], /* Owner name to authorize */ |
1802 | *ptr; /* Pointer into username */ | |
ef416fc2 | 1803 | struct passwd *pw; /* User password data */ |
1804 | static const char * const levels[] = /* Auth levels */ | |
1805 | { | |
1806 | "ANON", | |
1807 | "USER", | |
1808 | "GROUP" | |
1809 | }; | |
1810 | static const char * const types[] = /* Auth types */ | |
1811 | { | |
2fb76298 MS |
1812 | "None", |
1813 | "Basic", | |
1814 | "Digest", | |
1815 | "BasicDigest", | |
1816 | "Negotiate" | |
ef416fc2 | 1817 | }; |
1818 | ||
1819 | ||
1820 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1821 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
f301802f | 1822 | con->uri, con->best, con->best ? con->best->location ? |
1823 | con->best->location : "(null)" : ""); | |
fa73b229 | 1824 | if (owner) |
1825 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1826 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1827 | |
1828 | /* | |
1829 | * If there is no "best" authentication rule for this request, then | |
1830 | * access is allowed from the local system and denied from other | |
1831 | * addresses... | |
1832 | */ | |
1833 | ||
1834 | if (!con->best) | |
1835 | { | |
1836 | if (!strcmp(con->http.hostname, "localhost") || | |
1837 | !strcmp(con->http.hostname, ServerName)) | |
1838 | return (HTTP_OK); | |
1839 | else | |
1840 | return (HTTP_FORBIDDEN); | |
1841 | } | |
1842 | ||
1843 | best = con->best; | |
1844 | ||
5bd77a73 | 1845 | if ((type = best->type) == CUPSD_AUTH_DEFAULT) |
2fb76298 MS |
1846 | type = DefaultAuthType; |
1847 | ||
ef416fc2 | 1848 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
5bd77a73 MS |
1849 | "cupsdIsAuthorized: level=CUPSD_AUTH_%s, type=%s, " |
1850 | "satisfy=CUPSD_AUTH_SATISFY_%s, num_names=%d", | |
2fb76298 | 1851 | levels[best->level], types[type], |
10d09e33 | 1852 | best->satisfy ? "ANY" : "ALL", cupsArrayCount(best->names)); |
ef416fc2 | 1853 | |
5bd77a73 | 1854 | if (best->limit == CUPSD_AUTH_LIMIT_IPP) |
ef416fc2 | 1855 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", |
1856 | best->op, ippOpString(best->op)); | |
1857 | ||
1858 | /* | |
1859 | * Check host/ip-based accesses... | |
1860 | */ | |
1861 | ||
1862 | #ifdef AF_INET6 | |
1863 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1864 | { | |
1865 | /* | |
1866 | * Copy IPv6 address... | |
1867 | */ | |
1868 | ||
1869 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1870 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1871 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1872 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1873 | } | |
1874 | else | |
1875 | #endif /* AF_INET6 */ | |
1876 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
1877 | { | |
1878 | /* | |
1879 | * Copy IPv4 address... | |
1880 | */ | |
1881 | ||
1882 | address[0] = 0; | |
1883 | address[1] = 0; | |
1884 | address[2] = 0; | |
1885 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
1886 | } | |
1887 | else | |
1888 | memset(address, 0, sizeof(address)); | |
1889 | ||
1890 | hostlen = strlen(con->http.hostname); | |
1891 | ||
080811b1 | 1892 | auth = cupsdCheckAccess(address, con->http.hostname, hostlen, best) |
5bd77a73 | 1893 | ? CUPSD_AUTH_ALLOW : CUPSD_AUTH_DENY; |
ef416fc2 | 1894 | |
5bd77a73 | 1895 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=CUPSD_AUTH_%s...", |
ef416fc2 | 1896 | auth ? "DENY" : "ALLOW"); |
1897 | ||
5bd77a73 | 1898 | if (auth == CUPSD_AUTH_DENY && best->satisfy == CUPSD_AUTH_SATISFY_ALL) |
ef416fc2 | 1899 | return (HTTP_FORBIDDEN); |
1900 | ||
1901 | #ifdef HAVE_SSL | |
1902 | /* | |
1903 | * See if encryption is required... | |
1904 | */ | |
1905 | ||
f7deaa1a | 1906 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
88f9aafc | 1907 | _cups_strcasecmp(con->http.hostname, "localhost") && |
5bd77a73 | 1908 | best->satisfy == CUPSD_AUTH_SATISFY_ALL) && |
c8fef167 | 1909 | !(type == CUPSD_AUTH_NEGOTIATE || |
5bd77a73 | 1910 | (type == CUPSD_AUTH_NONE && DefaultAuthType == CUPSD_AUTH_NEGOTIATE))) |
ef416fc2 | 1911 | { |
355e94dc | 1912 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1913 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
1914 | return (HTTP_UPGRADE_REQUIRED); | |
1915 | } | |
1916 | #endif /* HAVE_SSL */ | |
1917 | ||
1918 | /* | |
1919 | * Now see what access level is required... | |
1920 | */ | |
1921 | ||
5bd77a73 | 1922 | if (best->level == CUPSD_AUTH_ANON || /* Anonymous access - allow it */ |
10d09e33 | 1923 | (type == CUPSD_AUTH_NONE && cupsArrayCount(best->names) == 0)) |
ef416fc2 | 1924 | return (HTTP_OK); |
1925 | ||
5bd77a73 MS |
1926 | if (!con->username[0] && type == CUPSD_AUTH_NONE && |
1927 | best->limit == CUPSD_AUTH_LIMIT_IPP) | |
ef416fc2 | 1928 | { |
1929 | /* | |
1930 | * Check for unauthenticated username... | |
1931 | */ | |
1932 | ||
1933 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
1934 | ||
1935 | ||
1936 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
1937 | if (attr) | |
1938 | { | |
355e94dc | 1939 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1940 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
1941 | attr->values[0].string.text); | |
db1f069b | 1942 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 1943 | } |
5bd77a73 | 1944 | else if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
ef416fc2 | 1945 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1946 | else | |
1947 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1948 | } | |
fa73b229 | 1949 | else |
1950 | { | |
355e94dc | 1951 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 1952 | con->username); |
1953 | ||
f7deaa1a | 1954 | #ifdef HAVE_AUTHORIZATION_H |
1955 | if (!con->username[0] && !con->authref) | |
1956 | #else | |
fa73b229 | 1957 | if (!con->username[0]) |
f7deaa1a | 1958 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 1959 | { |
5bd77a73 | 1960 | if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
fa73b229 | 1961 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1962 | else | |
1963 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1964 | } | |
1965 | ||
eac3a0a0 | 1966 | |
5bd77a73 | 1967 | if (con->type != type && type != CUPSD_AUTH_NONE && |
eac3a0a0 MS |
1968 | #ifdef HAVE_GSSAPI |
1969 | (type != CUPSD_AUTH_NEGOTIATE || con->gss_uid <= 0) && | |
1970 | #endif /* HAVE_GSSAPI */ | |
5bd77a73 | 1971 | (con->type != CUPSD_AUTH_BASIC || type != CUPSD_AUTH_BASICDIGEST)) |
2fb76298 MS |
1972 | { |
1973 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s!", | |
1974 | types[con->type], types[type]); | |
1975 | ||
1976 | return (HTTP_UNAUTHORIZED); | |
1977 | } | |
1978 | ||
db1f069b | 1979 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 1980 | } |
ef416fc2 | 1981 | |
1982 | /* | |
fa73b229 | 1983 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 1984 | * access... (root always matches) |
1985 | */ | |
1986 | ||
fa73b229 | 1987 | if (!strcmp(username, "root")) |
ef416fc2 | 1988 | return (HTTP_OK); |
1989 | ||
db1f069b MS |
1990 | /* |
1991 | * Strip any @domain or @KDC from the username and owner... | |
1992 | */ | |
1993 | ||
1994 | if ((ptr = strchr(username, '@')) != NULL) | |
1995 | *ptr = '\0'; | |
1996 | ||
1997 | if (owner) | |
1998 | { | |
1999 | strlcpy(ownername, owner, sizeof(ownername)); | |
2000 | ||
2001 | if ((ptr = strchr(ownername, '@')) != NULL) | |
2002 | *ptr = '\0'; | |
2003 | } | |
2004 | else | |
2005 | ownername[0] = '\0'; | |
2006 | ||
ef416fc2 | 2007 | /* |
2008 | * Get the user info... | |
2009 | */ | |
2010 | ||
f7deaa1a | 2011 | if (username[0]) |
2012 | { | |
2013 | pw = getpwnam(username); | |
2014 | endpwent(); | |
2015 | } | |
2016 | else | |
2017 | pw = NULL; | |
ef416fc2 | 2018 | |
5bd77a73 | 2019 | if (best->level == CUPSD_AUTH_USER) |
ef416fc2 | 2020 | { |
2021 | /* | |
2022 | * If there are no names associated with this location, then | |
2023 | * any valid user is OK... | |
2024 | */ | |
2025 | ||
10d09e33 | 2026 | if (cupsArrayCount(best->names) == 0) |
ef416fc2 | 2027 | return (HTTP_OK); |
2028 | ||
2029 | /* | |
2030 | * Otherwise check the user list and return OK if this user is | |
2031 | * allowed... | |
2032 | */ | |
2033 | ||
2034 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2035 | "cupsdIsAuthorized: Checking user membership..."); | |
2036 | ||
f7deaa1a | 2037 | #ifdef HAVE_AUTHORIZATION_H |
2038 | /* | |
2039 | * If an authorization reference was supplied it must match a right name... | |
2040 | */ | |
2041 | ||
2042 | if (con->authref) | |
2043 | { | |
10d09e33 MS |
2044 | for (name = (char *)cupsArrayFirst(best->names); |
2045 | name; | |
2046 | name = (char *)cupsArrayNext(best->names)) | |
f7deaa1a | 2047 | { |
88f9aafc | 2048 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9) && check_authref(con, name + 9)) |
f7deaa1a | 2049 | return (HTTP_OK); |
88f9aafc | 2050 | else if (!_cups_strcasecmp(name, "@SYSTEM") && SystemGroupAuthKey && |
f7deaa1a | 2051 | check_authref(con, SystemGroupAuthKey)) |
2052 | return (HTTP_OK); | |
2053 | } | |
2054 | ||
ee571f26 | 2055 | return (HTTP_FORBIDDEN); |
f7deaa1a | 2056 | } |
2057 | #endif /* HAVE_AUTHORIZATION_H */ | |
2058 | ||
10d09e33 MS |
2059 | for (name = (char *)cupsArrayFirst(best->names); |
2060 | name; | |
2061 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 2062 | { |
88f9aafc MS |
2063 | if (!_cups_strcasecmp(name, "@OWNER") && owner && |
2064 | !_cups_strcasecmp(username, ownername)) | |
ef416fc2 | 2065 | return (HTTP_OK); |
88f9aafc | 2066 | else if (!_cups_strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 2067 | { |
10d09e33 MS |
2068 | for (i = 0; i < NumSystemGroups; i ++) |
2069 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 2070 | return (HTTP_OK); |
2071 | } | |
10d09e33 | 2072 | else if (name[0] == '@') |
ef416fc2 | 2073 | { |
10d09e33 | 2074 | if (cupsdCheckGroup(username, pw, name + 1)) |
ef416fc2 | 2075 | return (HTTP_OK); |
2076 | } | |
88f9aafc | 2077 | else if (!_cups_strcasecmp(username, name)) |
ef416fc2 | 2078 | return (HTTP_OK); |
2079 | } | |
2080 | ||
85dda01c | 2081 | return (con->username[0] ? HTTP_FORBIDDEN : HTTP_UNAUTHORIZED); |
ef416fc2 | 2082 | } |
2083 | ||
2084 | /* | |
2085 | * Check to see if this user is in any of the named groups... | |
2086 | */ | |
2087 | ||
2088 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2089 | "cupsdIsAuthorized: Checking group membership..."); | |
2090 | ||
2091 | /* | |
2092 | * Check to see if this user is in any of the named groups... | |
2093 | */ | |
2094 | ||
10d09e33 MS |
2095 | for (name = (char *)cupsArrayFirst(best->names); |
2096 | name; | |
2097 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 2098 | { |
2099 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2100 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
10d09e33 | 2101 | name); |
ef416fc2 | 2102 | |
88f9aafc | 2103 | if (!_cups_strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 2104 | { |
10d09e33 MS |
2105 | for (i = 0; i < NumSystemGroups; i ++) |
2106 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 2107 | return (HTTP_OK); |
2108 | } | |
10d09e33 | 2109 | else if (cupsdCheckGroup(username, pw, name)) |
ef416fc2 | 2110 | return (HTTP_OK); |
2111 | } | |
2112 | ||
2113 | /* | |
2114 | * The user isn't part of the specified group, so deny access... | |
2115 | */ | |
2116 | ||
355e94dc | 2117 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2118 | "cupsdIsAuthorized: User not in group(s)!"); |
2119 | ||
85dda01c | 2120 | return (con->username[0] ? HTTP_FORBIDDEN : HTTP_UNAUTHORIZED); |
ef416fc2 | 2121 | } |
2122 | ||
2123 | ||
2124 | /* | |
10d09e33 MS |
2125 | * 'cupsdNewLocation()' - Create a new location for authorization. |
2126 | * | |
2127 | * Note: Still need to call cupsdAddLocation() to add it to the list of global | |
2128 | * locations. | |
ef416fc2 | 2129 | */ |
2130 | ||
10d09e33 MS |
2131 | cupsd_location_t * /* O - Pointer to new location record */ |
2132 | cupsdNewLocation(const char *location) /* I - Location path */ | |
ef416fc2 | 2133 | { |
10d09e33 | 2134 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 2135 | |
2136 | ||
2137 | /* | |
10d09e33 | 2138 | * Try to allocate memory for the new location. |
ef416fc2 | 2139 | */ |
2140 | ||
10d09e33 | 2141 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 2142 | return (NULL); |
2143 | ||
2144 | /* | |
10d09e33 | 2145 | * Initialize the record and copy the name over... |
ef416fc2 | 2146 | */ |
2147 | ||
10d09e33 MS |
2148 | if ((temp->location = _cupsStrAlloc(location)) == NULL) |
2149 | { | |
2150 | free(temp); | |
ef416fc2 | 2151 | return (NULL); |
10d09e33 | 2152 | } |
ef416fc2 | 2153 | |
10d09e33 | 2154 | temp->length = strlen(temp->location); |
ef416fc2 | 2155 | |
2156 | /* | |
10d09e33 | 2157 | * Return the new record... |
ef416fc2 | 2158 | */ |
2159 | ||
ef416fc2 | 2160 | return (temp); |
2161 | } | |
2162 | ||
2163 | ||
f7deaa1a | 2164 | #ifdef HAVE_AUTHORIZATION_H |
2165 | /* | |
2166 | * 'check_authref()' - Check if an authorization services reference has the | |
2167 | * supplied right. | |
2168 | */ | |
2169 | ||
2170 | static int /* O - 1 if right is valid, 0 otherwise */ | |
2171 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
2172 | const char *right) /* I - Right name */ | |
2173 | { | |
2174 | OSStatus status; /* OS Status */ | |
2175 | AuthorizationItem authright; /* Authorization right */ | |
2176 | AuthorizationRights authrights; /* Authorization rights */ | |
2177 | AuthorizationFlags authflags; /* Authorization flags */ | |
2178 | ||
2179 | ||
2180 | /* | |
2181 | * Check to see if the user is allowed to perform the task... | |
2182 | */ | |
2183 | ||
2184 | if (!con->authref) | |
2185 | return (0); | |
2186 | ||
2187 | authright.name = right; | |
2188 | authright.valueLength = 0; | |
2189 | authright.value = NULL; | |
2190 | authright.flags = 0; | |
2191 | ||
2192 | authrights.count = 1; | |
2193 | authrights.items = &authright; | |
2194 | ||
c8fef167 | 2195 | authflags = kAuthorizationFlagDefaults | |
f7deaa1a | 2196 | kAuthorizationFlagExtendRights; |
2197 | ||
c8fef167 MS |
2198 | if ((status = AuthorizationCopyRights(con->authref, &authrights, |
2199 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 2200 | authflags, NULL)) != 0) |
2201 | { | |
2202 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2203 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2204 | authright.name, (int)status, cssmErrorString(status)); | |
2205 | return (0); | |
2206 | } | |
2207 | ||
2208 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2209 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2210 | authright.name); | |
2211 | ||
2212 | return (1); | |
2213 | } | |
2214 | #endif /* HAVE_AUTHORIZATION_H */ | |
2215 | ||
2216 | ||
bd7854cb | 2217 | /* |
2218 | * 'compare_locations()' - Compare two locations. | |
2219 | */ | |
2220 | ||
2221 | static int /* O - Result of comparison */ | |
2222 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2223 | cupsd_location_t *b) /* I - Second location */ | |
2224 | { | |
2225 | return (strcmp(b->location, a->location)); | |
2226 | } | |
2227 | ||
2228 | ||
10d09e33 MS |
2229 | /* |
2230 | * 'copy_authmask()' - Copy function for auth masks. | |
2231 | */ | |
2232 | ||
2233 | static cupsd_authmask_t * /* O - New auth mask */ | |
2234 | copy_authmask(cupsd_authmask_t *mask, /* I - Existing auth mask */ | |
2235 | void *data) /* I - User data (unused) */ | |
2236 | { | |
2237 | cupsd_authmask_t *temp; /* New auth mask */ | |
2238 | ||
2239 | ||
2240 | (void)data; | |
2241 | ||
2242 | if ((temp = malloc(sizeof(cupsd_authmask_t))) != NULL) | |
2243 | { | |
2244 | memcpy(temp, mask, sizeof(cupsd_authmask_t)); | |
2245 | ||
2246 | if (temp->type == CUPSD_AUTH_NAME || temp->type == CUPSD_AUTH_INTERFACE) | |
2247 | { | |
2248 | /* | |
2249 | * Make a copy of the name... | |
2250 | */ | |
2251 | ||
2252 | if ((temp->mask.name.name = _cupsStrAlloc(temp->mask.name.name)) == NULL) | |
2253 | { | |
2254 | /* | |
2255 | * Failed to make copy... | |
2256 | */ | |
2257 | ||
2258 | free(temp); | |
2259 | temp = NULL; | |
2260 | } | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | return (temp); | |
2265 | } | |
2266 | ||
2267 | ||
d09495fa | 2268 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 2269 | /* |
2270 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2271 | * as needed. | |
2272 | */ | |
2273 | ||
2274 | static char * /* O - Encrypted password */ | |
2275 | cups_crypt(const char *pw, /* I - Password string */ | |
2276 | const char *salt) /* I - Salt (key) string */ | |
2277 | { | |
bd7854cb | 2278 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2279 | { |
2280 | /* | |
2281 | * Use MD5 passwords without the benefit of PAM; this is for | |
2282 | * Slackware Linux, and the algorithm was taken from the | |
2283 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2284 | */ | |
2285 | ||
2286 | int i; /* Looping var */ | |
2287 | unsigned long n; /* Output number */ | |
2288 | int pwlen; /* Length of password string */ | |
2289 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2290 | char *ptr; /* Pointer into result string */ | |
2291 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2292 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2293 | unsigned char digest[16]; /* MD5 digest result */ | |
2294 | static char result[120]; /* Final password string */ | |
2295 | ||
2296 | ||
2297 | /* | |
2298 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2299 | * Get a maximum of 8 characters of salt data after $1$... | |
2300 | */ | |
2301 | ||
2302 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2303 | if (*salt_end == '$') | |
2304 | break; | |
2305 | ||
2306 | /* | |
2307 | * Compute the MD5 sum we need... | |
2308 | */ | |
2309 | ||
2310 | pwlen = strlen(pw); | |
2311 | ||
757d2cad | 2312 | _cupsMD5Init(&state); |
2313 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2314 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2315 | |
757d2cad | 2316 | _cupsMD5Init(&state2); |
2317 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2318 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2319 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2320 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2321 | |
2322 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2323 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2324 | |
2325 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2326 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2327 | |
757d2cad | 2328 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2329 | |
2330 | for (i = 0; i < 1000; i ++) | |
2331 | { | |
757d2cad | 2332 | _cupsMD5Init(&state); |
ef416fc2 | 2333 | |
2334 | if (i & 1) | |
757d2cad | 2335 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2336 | else |
757d2cad | 2337 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2338 | |
2339 | if (i % 3) | |
757d2cad | 2340 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2341 | |
2342 | if (i % 7) | |
757d2cad | 2343 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2344 | |
2345 | if (i & 1) | |
757d2cad | 2346 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2347 | else |
757d2cad | 2348 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2349 | |
757d2cad | 2350 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2351 | } |
2352 | ||
2353 | /* | |
2354 | * Copy the final sum to the result string and return... | |
2355 | */ | |
2356 | ||
2357 | memcpy(result, salt, salt_end - salt); | |
2358 | ptr = result + (salt_end - salt); | |
2359 | *ptr++ = '$'; | |
2360 | ||
2361 | for (i = 0; i < 5; i ++, ptr += 4) | |
2362 | { | |
2363 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2364 | ||
2365 | if (i < 4) | |
2366 | n |= digest[i + 12]; | |
2367 | else | |
2368 | n |= digest[5]; | |
2369 | ||
2370 | to64(ptr, n, 4); | |
2371 | } | |
2372 | ||
2373 | to64(ptr, digest[11], 2); | |
2374 | ptr += 2; | |
2375 | *ptr = '\0'; | |
2376 | ||
2377 | return (result); | |
2378 | } | |
2379 | else | |
2380 | { | |
2381 | /* | |
2382 | * Use the standard crypt() function... | |
2383 | */ | |
2384 | ||
2385 | return (crypt(pw, salt)); | |
2386 | } | |
2387 | } | |
d09495fa | 2388 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
ef416fc2 | 2389 | |
2390 | ||
10d09e33 MS |
2391 | /* |
2392 | * 'free_authmask()' - Free function for auth masks. | |
2393 | */ | |
2394 | ||
2395 | static void | |
2396 | free_authmask(cupsd_authmask_t *mask, /* I - Auth mask to free */ | |
2397 | void *data) /* I - User data (unused) */ | |
2398 | { | |
2399 | (void)data; | |
2400 | ||
2401 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) | |
2402 | _cupsStrFree(mask->mask.name.name); | |
2403 | ||
2404 | free(mask); | |
2405 | } | |
2406 | ||
2407 | ||
e1d6a774 | 2408 | /* |
2409 | * 'get_md5_password()' - Get an MD5 password. | |
2410 | */ | |
2411 | ||
2412 | static char * /* O - MD5 password string */ | |
2413 | get_md5_password(const char *username, /* I - Username */ | |
2414 | const char *group, /* I - Group */ | |
2415 | char passwd[33]) /* O - MD5 password string */ | |
2416 | { | |
2417 | cups_file_t *fp; /* passwd.md5 file */ | |
2418 | char filename[1024], /* passwd.md5 filename */ | |
2419 | line[256], /* Line from file */ | |
2420 | tempuser[33], /* User from file */ | |
2421 | tempgroup[33]; /* Group from file */ | |
2422 | ||
2423 | ||
2424 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2425 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2426 | username, group ? group : "(null)", passwd); | |
2427 | ||
2428 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2429 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2430 | { | |
2431 | if (errno != ENOENT) | |
2432 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2433 | strerror(errno)); | |
2434 | ||
2435 | return (NULL); | |
2436 | } | |
2437 | ||
2438 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2439 | { | |
2440 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2441 | { | |
2442 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2443 | continue; | |
2444 | } | |
2445 | ||
2446 | if (!strcmp(username, tempuser) && | |
2447 | (group == NULL || !strcmp(group, tempgroup))) | |
2448 | { | |
2449 | /* | |
2450 | * Found the password entry! | |
2451 | */ | |
2452 | ||
2453 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2454 | username, tempgroup); | |
2455 | ||
2456 | cupsFileClose(fp); | |
2457 | return (passwd); | |
2458 | } | |
2459 | } | |
2460 | ||
2461 | /* | |
2462 | * Didn't find a password entry - return NULL! | |
2463 | */ | |
2464 | ||
2465 | cupsFileClose(fp); | |
2466 | return (NULL); | |
2467 | } | |
2468 | ||
2469 | ||
ef416fc2 | 2470 | #if HAVE_LIBPAM |
2471 | /* | |
2472 | * 'pam_func()' - PAM conversation function. | |
2473 | */ | |
2474 | ||
2475 | static int /* O - Success or failure */ | |
2476 | pam_func( | |
2477 | int num_msg, /* I - Number of messages */ | |
2478 | const struct pam_message **msg, /* I - Messages */ | |
2479 | struct pam_response **resp, /* O - Responses */ | |
2480 | void *appdata_ptr) | |
2481 | /* I - Pointer to connection */ | |
2482 | { | |
2483 | int i; /* Looping var */ | |
2484 | struct pam_response *replies; /* Replies */ | |
2485 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2486 | ||
2487 | ||
2488 | /* | |
2489 | * Allocate memory for the responses... | |
2490 | */ | |
2491 | ||
2492 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2493 | return (PAM_CONV_ERR); | |
2494 | ||
2495 | /* | |
2496 | * Answer all of the messages... | |
2497 | */ | |
2498 | ||
2499 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2500 | ||
2501 | #ifdef __hpux | |
2502 | /* | |
2503 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2504 | * module. This is a workaround... | |
2505 | */ | |
2506 | ||
2507 | data = auth_data; | |
2508 | (void)appdata_ptr; | |
2509 | #else | |
2510 | data = (cupsd_authdata_t *)appdata_ptr; | |
2511 | #endif /* __hpux */ | |
2512 | ||
2513 | for (i = 0; i < num_msg; i ++) | |
2514 | { | |
2515 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2516 | ||
2517 | switch (msg[i]->msg_style) | |
2518 | { | |
2519 | case PAM_PROMPT_ECHO_ON: | |
2520 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2521 | data->username)); | |
2522 | replies[i].resp_retcode = PAM_SUCCESS; | |
2523 | replies[i].resp = strdup(data->username); | |
2524 | break; | |
2525 | ||
2526 | case PAM_PROMPT_ECHO_OFF: | |
2527 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2528 | data->password)); | |
2529 | replies[i].resp_retcode = PAM_SUCCESS; | |
2530 | replies[i].resp = strdup(data->password); | |
2531 | break; | |
2532 | ||
2533 | case PAM_TEXT_INFO: | |
2534 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2535 | replies[i].resp_retcode = PAM_SUCCESS; | |
2536 | replies[i].resp = NULL; | |
2537 | break; | |
2538 | ||
2539 | case PAM_ERROR_MSG: | |
2540 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2541 | replies[i].resp_retcode = PAM_SUCCESS; | |
2542 | replies[i].resp = NULL; | |
2543 | break; | |
2544 | ||
2545 | default: | |
2546 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2547 | msg[i]->msg_style)); | |
2548 | free(replies); | |
2549 | return (PAM_CONV_ERR); | |
2550 | } | |
2551 | } | |
2552 | ||
2553 | /* | |
2554 | * Return the responses back to PAM... | |
2555 | */ | |
2556 | ||
2557 | *resp = replies; | |
2558 | ||
2559 | return (PAM_SUCCESS); | |
2560 | } | |
f7deaa1a | 2561 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 2562 | |
2563 | ||
2564 | /* | |
2565 | * 'to64()' - Base64-encode an integer value... | |
2566 | */ | |
2567 | ||
2568 | static void | |
2569 | to64(char *s, /* O - Output string */ | |
2570 | unsigned long v, /* I - Value to encode */ | |
2571 | int n) /* I - Number of digits */ | |
2572 | { | |
2573 | const char *itoa64 = "./0123456789" | |
2574 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2575 | "abcdefghijklmnopqrstuvwxyz"; | |
2576 | ||
2577 | ||
2578 | for (; n > 0; n --, v >>= 6) | |
2579 | *s++ = itoa64[v & 0x3f]; | |
2580 | } | |
2581 | #endif /* HAVE_LIBPAM */ | |
2582 | ||
2583 | ||
2584 | /* | |
b19ccc9e | 2585 | * End of "$Id: auth.c 7830 2008-08-04 20:38:50Z mike $". |
ef416fc2 | 2586 | */ |