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b423cd4c | 1 | /* |
db1f069b | 2 | * "$Id: auth.c 6949 2007-09-12 21:33:23Z mike $" |
ef416fc2 | 3 | * |
4 | * Authorization routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
f7deaa1a | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
8 | * | |
9 | * This file contains Kerberos support code, copyright 2006 by | |
10 | * Jelmer Vernooij. | |
ef416fc2 | 11 | * |
12 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 13 | * property of Apple Inc. and are protected by Federal copyright |
14 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
15 | * which should have been included with this file. If this file is | |
16 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 17 | * |
18 | * Contents: | |
19 | * | |
20 | * cupsdAddLocation() - Add a location for authorization. | |
21 | * cupsdAddName() - Add a name to a location... | |
22 | * cupsdAllowHost() - Add a host name that is allowed to access the | |
23 | * location. | |
89d46774 | 24 | * cupsdAllowIP() - Add an IP address or network that is allowed |
25 | * to access the location. | |
26 | * cupsdAuthorize() - Validate any authorization credentials. | |
ef416fc2 | 27 | * cupsdCheckAuth() - Check authorization masks. |
28 | * cupsdCheckGroup() - Check for a user's group membership. | |
29 | * cupsdCopyLocation() - Make a copy of a location... | |
89d46774 | 30 | * cupsdDeleteAllLocations() - Free all memory used for location |
31 | * authorization. | |
ef416fc2 | 32 | * cupsdDeleteLocation() - Free all memory used by a location. |
89d46774 | 33 | * cupsdDenyHost() - Add a host name that is not allowed to access |
34 | * the location. | |
35 | * cupsdDenyIP() - Add an IP address or network that is not | |
36 | * allowed to access the location. | |
ef416fc2 | 37 | * cupsdFindBest() - Find the location entry that best matches the |
38 | * resource. | |
39 | * cupsdFindLocation() - Find the named location. | |
ef416fc2 | 40 | * cupsdIsAuthorized() - Check to see if the user is authorized... |
41 | * add_allow() - Add an allow mask to the location. | |
42 | * add_deny() - Add a deny mask to the location. | |
bd7854cb | 43 | * compare_locations() - Compare two locations. |
ef416fc2 | 44 | * cups_crypt() - Encrypt the password using the DES or MD5 |
45 | * algorithms, as needed. | |
f7deaa1a | 46 | * get_gss_creds() - Obtain GSS credentials. |
e1d6a774 | 47 | * get_md5_password() - Get an MD5 password. |
ef416fc2 | 48 | * pam_func() - PAM conversation function. |
49 | * to64() - Base64-encode an integer value... | |
f7deaa1a | 50 | * check_authref() - Check an authorization services reference. |
ef416fc2 | 51 | */ |
52 | ||
53 | /* | |
54 | * Include necessary headers... | |
55 | */ | |
56 | ||
57 | #include "cupsd.h" | |
58 | #include <grp.h> | |
59 | #ifdef HAVE_SHADOW_H | |
60 | # include <shadow.h> | |
61 | #endif /* HAVE_SHADOW_H */ | |
62 | #ifdef HAVE_CRYPT_H | |
63 | # include <crypt.h> | |
64 | #endif /* HAVE_CRYPT_H */ | |
65 | #if HAVE_LIBPAM | |
66 | # ifdef HAVE_PAM_PAM_APPL_H | |
67 | # include <pam/pam_appl.h> | |
68 | # else | |
69 | # include <security/pam_appl.h> | |
70 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
71 | #endif /* HAVE_LIBPAM */ | |
72 | #ifdef HAVE_USERSEC_H | |
73 | # include <usersec.h> | |
74 | #endif /* HAVE_USERSEC_H */ | |
bd7854cb | 75 | #ifdef HAVE_MEMBERSHIP_H |
76 | # include <membership.h> | |
77 | #endif /* HAVE_MEMBERSHIP_H */ | |
f7deaa1a | 78 | #ifdef HAVE_AUTHORIZATION_H |
79 | # include <Security/AuthorizationTags.h> | |
80 | # ifdef HAVE_SECBASEPRIV_H | |
81 | # include <Security/SecBasePriv.h> | |
82 | # else | |
83 | extern const char *cssmErrorString(int error); | |
84 | # endif /* HAVE_SECBASEPRIV_H */ | |
85 | #endif /* HAVE_AUTHORIZATION_H */ | |
db1f069b MS |
86 | #ifdef HAVE_SYS_PARAM_H |
87 | # include <sys/param.h> | |
88 | #endif /* HAVE_SYS_PARAM_H */ | |
bc44d920 | 89 | #ifdef HAVE_SYS_UCRED_H |
90 | # include <sys/ucred.h> | |
91 | typedef struct xucred cupsd_ucred_t; | |
92 | # define CUPSD_UCRED_UID(c) (c).cr_uid | |
93 | #else | |
94 | typedef struct ucred cupsd_ucred_t; | |
95 | # define CUPSD_UCRED_UID(c) (c).uid | |
96 | #endif /* HAVE_SYS_UCRED_H */ | |
ef416fc2 | 97 | |
98 | ||
99 | /* | |
100 | * Local functions... | |
101 | */ | |
102 | ||
103 | static cupsd_authmask_t *add_allow(cupsd_location_t *loc); | |
104 | static cupsd_authmask_t *add_deny(cupsd_location_t *loc); | |
f7deaa1a | 105 | #ifdef HAVE_AUTHORIZATION_H |
106 | static int check_authref(cupsd_client_t *con, const char *right); | |
107 | #endif /* HAVE_AUTHORIZATION_H */ | |
bd7854cb | 108 | static int compare_locations(cupsd_location_t *a, |
109 | cupsd_location_t *b); | |
d09495fa | 110 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 111 | static char *cups_crypt(const char *pw, const char *salt); |
d09495fa | 112 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
f7deaa1a | 113 | #ifdef HAVE_GSSAPI |
114 | static gss_cred_id_t get_gss_creds(const char *service_name); | |
115 | #endif /* HAVE_GSSAPI */ | |
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 | /* | |
149 | * 'cupsdAddLocation()' - Add a location for authorization. | |
150 | */ | |
151 | ||
152 | cupsd_location_t * /* O - Pointer to new location record */ | |
153 | cupsdAddLocation(const char *location) /* I - Location path */ | |
154 | { | |
155 | cupsd_location_t *temp; /* New location */ | |
156 | ||
157 | ||
158 | /* | |
bd7854cb | 159 | * Make sure the locations array is created... |
ef416fc2 | 160 | */ |
161 | ||
bd7854cb | 162 | if (!Locations) |
163 | Locations = cupsArrayNew((cups_array_func_t)compare_locations, NULL); | |
ef416fc2 | 164 | |
bd7854cb | 165 | if (!Locations) |
ef416fc2 | 166 | return (NULL); |
167 | ||
bd7854cb | 168 | /* |
169 | * Try to allocate memory for the new location. | |
170 | */ | |
171 | ||
172 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) | |
173 | return (NULL); | |
ef416fc2 | 174 | |
175 | /* | |
176 | * Initialize the record and copy the name over... | |
177 | */ | |
178 | ||
bd7854cb | 179 | temp->location = strdup(location); |
180 | temp->length = strlen(temp->location); | |
ef416fc2 | 181 | |
bd7854cb | 182 | cupsArrayAdd(Locations, temp); |
183 | ||
184 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: added location \'%s\'", | |
ef416fc2 | 185 | location); |
186 | ||
187 | /* | |
188 | * Return the new record... | |
189 | */ | |
190 | ||
191 | return (temp); | |
192 | } | |
193 | ||
194 | ||
195 | /* | |
196 | * 'cupsdAddName()' - Add a name to a location... | |
197 | */ | |
198 | ||
199 | void | |
200 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
201 | char *name) /* I - Name to add */ | |
202 | { | |
203 | char **temp; /* Pointer to names array */ | |
204 | ||
205 | ||
206 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", | |
207 | loc, name); | |
208 | ||
209 | if (loc->num_names == 0) | |
210 | temp = malloc(sizeof(char *)); | |
211 | else | |
212 | temp = realloc(loc->names, (loc->num_names + 1) * sizeof(char *)); | |
213 | ||
214 | if (temp == NULL) | |
215 | { | |
216 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to add name to location %s: %s", | |
e1d6a774 | 217 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 218 | return; |
219 | } | |
220 | ||
221 | loc->names = temp; | |
222 | ||
223 | if ((temp[loc->num_names] = strdup(name)) == NULL) | |
224 | { | |
225 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
226 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 227 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 228 | return; |
229 | } | |
230 | ||
231 | loc->num_names ++; | |
232 | } | |
233 | ||
234 | ||
235 | /* | |
236 | * 'cupsdAllowHost()' - Add a host name that is allowed to access the location. | |
237 | */ | |
238 | ||
239 | void | |
240 | cupsdAllowHost(cupsd_location_t *loc, /* I - Location to add to */ | |
241 | char *name) /* I - Name of host or domain to add */ | |
242 | { | |
243 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
244 | char ifname[32], /* Interface name */ | |
245 | *ifptr; /* Pointer to end of name */ | |
246 | ||
247 | ||
248 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAllowHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 249 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 250 | |
251 | if ((temp = add_allow(loc)) == NULL) | |
252 | return; | |
253 | ||
bd7854cb | 254 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 255 | { |
256 | /* | |
257 | * Allow *interface*... | |
258 | */ | |
259 | ||
260 | temp->type = AUTH_INTERFACE; | |
261 | temp->mask.name.name = strdup("*"); | |
262 | temp->mask.name.length = 1; | |
263 | } | |
bd7854cb | 264 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 265 | { |
266 | /* | |
267 | * Allow *interface*... | |
268 | */ | |
269 | ||
270 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
271 | ||
272 | ifptr = ifname + strlen(ifname); | |
273 | ||
274 | if (ifptr[-1] == ')') | |
275 | { | |
276 | ifptr --; | |
277 | *ifptr = '\0'; | |
278 | } | |
279 | ||
280 | temp->type = AUTH_INTERFACE; | |
281 | temp->mask.name.name = strdup(ifname); | |
282 | temp->mask.name.length = ifptr - ifname; | |
283 | } | |
284 | else | |
285 | { | |
286 | /* | |
287 | * Allow name... | |
288 | */ | |
289 | ||
290 | temp->type = AUTH_NAME; | |
291 | temp->mask.name.name = strdup(name); | |
292 | temp->mask.name.length = strlen(name); | |
293 | } | |
294 | } | |
295 | ||
296 | ||
297 | /* | |
298 | * 'cupsdAllowIP()' - Add an IP address or network that is allowed to access | |
299 | * the location. | |
300 | */ | |
301 | ||
302 | void | |
303 | cupsdAllowIP(cupsd_location_t *loc, /* I - Location to add to */ | |
304 | unsigned address[4], /* I - IP address to add */ | |
305 | unsigned netmask[4]) /* I - Netmask of address */ | |
306 | { | |
307 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
308 | ||
309 | ||
310 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
311 | "cupsdAllowIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 312 | loc, loc->location ? loc->location : "nil", |
313 | address[0], address[1], address[2], address[3], | |
314 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 315 | |
316 | if ((temp = add_allow(loc)) == NULL) | |
317 | return; | |
318 | ||
319 | temp->type = AUTH_IP; | |
320 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
321 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
322 | } | |
323 | ||
324 | ||
325 | /* | |
326 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
327 | */ | |
328 | ||
329 | void | |
330 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
331 | { | |
332 | int type; /* Authentication type */ | |
f7deaa1a | 333 | const char *authorization; /* Pointer into Authorization string */ |
334 | char *ptr, /* Pointer into string */ | |
db1f069b | 335 | username[256], /* Username string */ |
ef416fc2 | 336 | password[33]; /* Password string */ |
337 | const char *localuser; /* Certificate username */ | |
338 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ | |
339 | md5[33], /* MD5 password */ | |
340 | basicmd5[33]; /* MD5 of Basic password */ | |
341 | static const char * const states[] = /* HTTP client states... */ | |
342 | { | |
343 | "WAITING", | |
344 | "OPTIONS", | |
345 | "GET", | |
346 | "GET", | |
347 | "HEAD", | |
348 | "POST", | |
349 | "POST", | |
350 | "POST", | |
351 | "PUT", | |
352 | "PUT", | |
353 | "DELETE", | |
354 | "TRACE", | |
355 | "CLOSE", | |
356 | "STATUS" | |
357 | }; | |
358 | ||
359 | ||
360 | /* | |
361 | * Locate the best matching location so we know what kind of | |
362 | * authentication to expect... | |
363 | */ | |
364 | ||
365 | con->best = cupsdFindBest(con->uri, con->http.state); | |
366 | ||
367 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
368 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
369 | con->uri, con->best, con->best ? con->best->location : ""); | |
370 | ||
371 | if (con->best && con->best->type != AUTH_NONE) | |
7ff4fea9 MS |
372 | { |
373 | if (con->best->type == AUTH_DEFAULT) | |
374 | type = DefaultAuthType; | |
375 | else | |
376 | type = con->best->type; | |
377 | } | |
ef416fc2 | 378 | else |
379 | type = DefaultAuthType; | |
380 | ||
381 | /* | |
382 | * Decode the Authorization string... | |
383 | */ | |
384 | ||
f7deaa1a | 385 | authorization = httpGetField(&con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 386 | |
387 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
388 | authorization); | |
389 | ||
390 | username[0] = '\0'; | |
391 | password[0] = '\0'; | |
392 | ||
f7deaa1a | 393 | #ifdef HAVE_AUTHORIZATION_H |
394 | if (con->authref) | |
395 | { | |
396 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
397 | con->authref = NULL; | |
398 | } | |
399 | #endif /* HAVE_AUTHORIZATION_H */ | |
400 | ||
ef416fc2 | 401 | if (type == AUTH_NONE) |
402 | { | |
403 | /* | |
404 | * No authorization required, return early... | |
405 | */ | |
406 | ||
407 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
408 | "cupsdAuthorize: No authentication required."); | |
409 | return; | |
410 | } | |
411 | else if (!*authorization) | |
412 | { | |
413 | /* | |
414 | * No authorization data provided, return early... | |
415 | */ | |
416 | ||
417 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
418 | "cupsdAuthorize: No authentication data provided."); | |
419 | return; | |
420 | } | |
f7deaa1a | 421 | #ifdef HAVE_AUTHORIZATION_H |
422 | else if (!strncmp(authorization, "AuthRef", 6) && | |
423 | !strcasecmp(con->http.hostname, "localhost")) | |
424 | { | |
425 | OSStatus status; /* Status */ | |
426 | int authlen; /* Auth string length */ | |
427 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
428 | ||
429 | /* | |
430 | * Get the Authorization Services data... | |
431 | */ | |
432 | ||
433 | authorization += 7; | |
434 | while (isspace(*authorization & 255)) | |
435 | authorization ++; | |
436 | ||
437 | authlen = sizeof(nonce); | |
438 | httpDecode64_2(nonce, &authlen, authorization); | |
439 | ||
440 | if (authlen != kAuthorizationExternalFormLength) | |
441 | { | |
442 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 443 | "External Authorization reference size is incorrect!"); |
f7deaa1a | 444 | return; |
445 | } | |
446 | ||
447 | if ((status = AuthorizationCreateFromExternalForm( | |
448 | (AuthorizationExternalForm *)nonce, &con->authref)) != 0) | |
449 | { | |
450 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 451 | "AuthorizationCreateFromExternalForm returned %d (%s)", |
f7deaa1a | 452 | (int)status, cssmErrorString(status)); |
453 | return; | |
454 | } | |
455 | ||
456 | if ((status = AuthorizationCopyInfo(con->authref, | |
457 | kAuthorizationEnvironmentUsername, | |
458 | &authinfo)) != 0) | |
459 | { | |
460 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 461 | "AuthorizationCopyInfo returned %d (%s)", |
f7deaa1a | 462 | (int)status, cssmErrorString(status)); |
463 | return; | |
464 | } | |
465 | ||
466 | if (authinfo->count == 1) | |
467 | strlcpy(username, authinfo->items[0].value, sizeof(username)); | |
468 | ||
355e94dc MS |
469 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
470 | "cupsdAuthorize: Authorized as %s using AuthRef", | |
471 | username); | |
472 | ||
f7deaa1a | 473 | AuthorizationFreeItemSet(authinfo); |
474 | } | |
475 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 476 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
477 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
478 | con->http.hostaddr->addr.sa_family == AF_LOCAL) | |
479 | { | |
480 | /* | |
481 | * Use peer credentials from domain socket connection... | |
482 | */ | |
483 | ||
484 | struct passwd *pwd; /* Password entry for this user */ | |
485 | cupsd_ucred_t peercred; /* Peer credentials */ | |
486 | socklen_t peersize; /* Size of peer credentials */ | |
487 | ||
488 | ||
489 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
490 | { | |
491 | cupsdLogMessage(CUPSD_LOG_ERROR, "User \"%s\" does not exist!", | |
492 | authorization + 9); | |
493 | return; | |
494 | } | |
495 | ||
496 | peersize = sizeof(peercred); | |
497 | ||
498 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) | |
499 | { | |
500 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
501 | strerror(errno)); | |
502 | return; | |
503 | } | |
504 | ||
505 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
506 | { | |
507 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
508 | "Invalid peer credentials for \"%s\" - got %d, " | |
509 | "expected %d!", authorization + 9, | |
510 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); | |
511 | # ifdef HAVE_SYS_UCRED_H | |
512 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_version=%d", | |
513 | peercred.cr_version); | |
514 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_uid=%d", | |
515 | peercred.cr_uid); | |
516 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_ngroups=%d", | |
517 | peercred.cr_ngroups); | |
518 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_groups[0]=%d", | |
519 | peercred.cr_groups[0]); | |
520 | # endif /* HAVE_SYS_UCRED_H */ | |
521 | return; | |
522 | } | |
523 | ||
524 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc MS |
525 | |
526 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
527 | "cupsdAuthorize: Authorized as %s using PeerCred", | |
528 | username); | |
bc44d920 | 529 | } |
530 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 531 | else if (!strncmp(authorization, "Local", 5) && |
532 | !strcasecmp(con->http.hostname, "localhost")) | |
533 | { | |
534 | /* | |
535 | * Get Local certificate authentication data... | |
536 | */ | |
537 | ||
538 | authorization += 5; | |
80ca4592 | 539 | while (isspace(*authorization & 255)) |
ef416fc2 | 540 | authorization ++; |
541 | ||
542 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
355e94dc | 543 | { |
ef416fc2 | 544 | strlcpy(username, localuser, sizeof(username)); |
355e94dc MS |
545 | |
546 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
547 | "cupsdAuthorize: Authorized as %s using Local", | |
548 | username); | |
549 | } | |
ef416fc2 | 550 | else |
551 | { | |
552 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
553 | "cupsdAuthorize: Local authentication certificate not " | |
554 | "found!"); | |
555 | return; | |
556 | } | |
557 | } | |
558 | else if (!strncmp(authorization, "Basic", 5) && | |
559 | (type == AUTH_BASIC || type == AUTH_BASICDIGEST)) | |
560 | { | |
561 | /* | |
562 | * Get the Basic authentication data... | |
563 | */ | |
564 | ||
565 | int userlen; /* Username:password length */ | |
566 | ||
567 | ||
568 | authorization += 5; | |
80ca4592 | 569 | while (isspace(*authorization & 255)) |
ef416fc2 | 570 | authorization ++; |
571 | ||
572 | userlen = sizeof(username); | |
573 | httpDecode64_2(username, &userlen, authorization); | |
574 | ||
575 | /* | |
576 | * Pull the username and password out... | |
577 | */ | |
578 | ||
579 | if ((ptr = strchr(username, ':')) == NULL) | |
580 | { | |
581 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
582 | "cupsdAuthorize: Missing Basic password!"); | |
583 | return; | |
584 | } | |
585 | ||
586 | *ptr++ = '\0'; | |
587 | ||
588 | if (!username[0]) | |
589 | { | |
590 | /* | |
591 | * Username must not be empty... | |
592 | */ | |
593 | ||
594 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
595 | "cupsdAuthorize: Empty Basic username!"); | |
596 | return; | |
597 | } | |
598 | ||
599 | if (!*ptr) | |
600 | { | |
601 | /* | |
602 | * Password must not be empty... | |
603 | */ | |
604 | ||
605 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
606 | "cupsdAuthorize: Empty Basic password!"); | |
607 | return; | |
608 | } | |
609 | ||
610 | strlcpy(password, ptr, sizeof(password)); | |
611 | ||
612 | /* | |
613 | * Validate the username and password... | |
614 | */ | |
615 | ||
616 | switch (type) | |
617 | { | |
618 | case AUTH_BASIC : | |
619 | { | |
620 | #if HAVE_LIBPAM | |
621 | /* | |
622 | * Only use PAM to do authentication. This supports MD5 | |
623 | * passwords, among other things... | |
624 | */ | |
625 | ||
626 | pam_handle_t *pamh; /* PAM authentication handle */ | |
627 | int pamerr; /* PAM error code */ | |
628 | struct pam_conv pamdata;/* PAM conversation data */ | |
629 | cupsd_authdata_t data; /* Authentication data */ | |
630 | ||
631 | ||
632 | strlcpy(data.username, username, sizeof(data.username)); | |
633 | strlcpy(data.password, password, sizeof(data.password)); | |
634 | ||
07725fee | 635 | # if defined(__sun) || defined(__hpux) |
e1d6a774 | 636 | pamdata.conv = (int (*)(int, struct pam_message **, |
637 | struct pam_response **, | |
638 | void *))pam_func; | |
639 | # else | |
ef416fc2 | 640 | pamdata.conv = pam_func; |
07725fee | 641 | # endif /* __sun || __hpux */ |
ef416fc2 | 642 | pamdata.appdata_ptr = &data; |
643 | ||
644 | # ifdef __hpux | |
645 | /* | |
646 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
647 | * more info... | |
648 | */ | |
649 | ||
650 | auth_data = &data; | |
651 | # endif /* __hpux */ | |
652 | ||
653 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
654 | if (pamerr != PAM_SUCCESS) | |
655 | { | |
656 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
657 | "cupsdAuthorize: pam_start() returned %d (%s)!\n", | |
658 | pamerr, pam_strerror(pamh, pamerr)); | |
659 | pam_end(pamh, 0); | |
660 | return; | |
661 | } | |
662 | ||
663 | pamerr = pam_authenticate(pamh, PAM_SILENT); | |
664 | if (pamerr != PAM_SUCCESS) | |
665 | { | |
666 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
667 | "cupsdAuthorize: pam_authenticate() returned %d " | |
668 | "(%s)!\n", | |
669 | pamerr, pam_strerror(pamh, pamerr)); | |
670 | pam_end(pamh, 0); | |
671 | return; | |
672 | } | |
673 | ||
674 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); | |
675 | if (pamerr != PAM_SUCCESS) | |
676 | { | |
677 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
678 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
679 | "(%s)!\n", | |
680 | pamerr, pam_strerror(pamh, pamerr)); | |
681 | pam_end(pamh, 0); | |
682 | return; | |
683 | } | |
684 | ||
685 | pam_end(pamh, PAM_SUCCESS); | |
686 | ||
687 | #elif defined(HAVE_USERSEC_H) | |
688 | /* | |
689 | * Use AIX authentication interface... | |
690 | */ | |
691 | ||
692 | char *authmsg; /* Authentication message */ | |
ef416fc2 | 693 | int reenter; /* ??? */ |
694 | ||
695 | ||
696 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
697 | "cupsdAuthorize: AIX authenticate of username \"%s\"", | |
698 | username); | |
699 | ||
700 | reenter = 1; | |
701 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
702 | { | |
703 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
704 | "cupsdAuthorize: Unable to authenticate username " | |
705 | "\"%s\": %s", | |
706 | username, strerror(errno)); | |
707 | return; | |
708 | } | |
709 | ||
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, | |
732 | "cupsdAuthorize: Unknown username \"%s\"!", | |
733 | 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, | |
748 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
749 | "password!", username); | |
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, | |
763 | "cupsdAuthorize: Username \"%s\" has no password!", | |
764 | username); | |
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, | |
776 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
777 | pw->pw_passwd, pass); | |
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, | |
787 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
788 | spw->sp_pwdp, pass); | |
789 | ||
790 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
791 | { | |
792 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
793 | "cupsdAuthorize: Authentication failed for " | |
794 | "user \"%s\"!", | |
795 | username); | |
796 | return; | |
797 | } | |
798 | } | |
799 | else | |
800 | # endif /* HAVE_SHADOW_H */ | |
801 | { | |
802 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
803 | "cupsdAuthorize: Authentication failed for " | |
804 | "user \"%s\"!", | |
805 | username); | |
806 | return; | |
807 | } | |
808 | } | |
809 | #endif /* HAVE_LIBPAM */ | |
810 | } | |
355e94dc MS |
811 | |
812 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
813 | "cupsdAuthorize: Authorized as %s using Basic", | |
814 | username); | |
ef416fc2 | 815 | break; |
816 | ||
817 | case AUTH_BASICDIGEST : | |
818 | /* | |
819 | * Do Basic authentication with the Digest password file... | |
820 | */ | |
821 | ||
e1d6a774 | 822 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 823 | { |
824 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
825 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
826 | username); | |
827 | return; | |
828 | } | |
829 | ||
830 | httpMD5(username, "CUPS", password, basicmd5); | |
831 | ||
832 | if (strcmp(md5, basicmd5)) | |
833 | { | |
834 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
835 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
836 | username); | |
837 | return; | |
838 | } | |
355e94dc MS |
839 | |
840 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
841 | "cupsdAuthorize: Authorized as %s using BasicDigest", | |
842 | username); | |
ef416fc2 | 843 | break; |
844 | } | |
845 | } | |
846 | else if (!strncmp(authorization, "Digest", 6) && type == AUTH_DIGEST) | |
847 | { | |
848 | /* | |
849 | * Get the username, password, and nonce from the Digest attributes... | |
850 | */ | |
851 | ||
852 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
853 | username, sizeof(username)) || !username[0]) | |
854 | { | |
855 | /* | |
856 | * Username must not be empty... | |
857 | */ | |
858 | ||
859 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
860 | "cupsdAuthorize: Empty or missing Digest username!"); | |
861 | return; | |
862 | } | |
863 | ||
864 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
865 | password, sizeof(password)) || !password[0]) | |
866 | { | |
867 | /* | |
868 | * Password must not be empty... | |
869 | */ | |
870 | ||
871 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
872 | "cupsdAuthorize: Empty or missing Digest password!"); | |
873 | return; | |
874 | } | |
875 | ||
876 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
877 | nonce)) | |
878 | { | |
879 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
880 | "cupsdAuthorize: No nonce value for Digest " | |
881 | "authentication!"); | |
882 | return; | |
883 | } | |
884 | ||
885 | if (strcmp(con->http.hostname, nonce)) | |
886 | { | |
887 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
888 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
889 | "got \"%s\"!", con->http.hostname, nonce); | |
890 | return; | |
891 | } | |
892 | ||
893 | /* | |
894 | * Validate the username and password... | |
895 | */ | |
896 | ||
e1d6a774 | 897 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 898 | { |
899 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
900 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
901 | username); | |
902 | return; | |
903 | } | |
904 | ||
905 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
906 | ||
907 | if (strcmp(md5, password)) | |
908 | { | |
909 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
910 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
911 | username); | |
912 | return; | |
913 | } | |
355e94dc MS |
914 | |
915 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
916 | "cupsdAuthorize: Authorized as %s using Digest", | |
917 | username); | |
ef416fc2 | 918 | } |
f7deaa1a | 919 | #ifdef HAVE_GSSAPI |
db1f069b | 920 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 921 | { |
922 | int len; /* Length of authorization string */ | |
923 | gss_cred_id_t server_creds; /* Server credentials */ | |
924 | gss_ctx_id_t context; /* Authorization context */ | |
925 | OM_uint32 major_status, /* Major status code */ | |
926 | minor_status; /* Minor status code */ | |
927 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
928 | /* Input token from string */ | |
929 | output_token = GSS_C_EMPTY_BUFFER; | |
930 | /* Output token for username */ | |
931 | gss_name_t client_name; /* Client name */ | |
c24d2134 | 932 | unsigned int ret_flags; /* Credential flags */ |
f7deaa1a | 933 | |
934 | ||
f42414bf | 935 | # ifdef __APPLE__ |
936 | /* | |
937 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
938 | * to use it... | |
939 | */ | |
940 | ||
941 | if (gss_init_sec_context == NULL) | |
942 | { | |
943 | cupsdLogMessage(CUPSD_LOG_WARN, | |
944 | "GSSAPI/Kerberos authentication failed because the " | |
945 | "Kerberos framework is not present."); | |
946 | return; | |
947 | } | |
948 | # endif /* __APPLE__ */ | |
949 | ||
f7deaa1a | 950 | con->gss_output_token.length = 0; |
951 | ||
952 | /* | |
953 | * Find the start of the Kerberos input token... | |
954 | */ | |
955 | ||
956 | authorization += 9; | |
957 | while (isspace(*authorization & 255)) | |
958 | authorization ++; | |
959 | ||
960 | if (!*authorization) | |
961 | { | |
962 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
963 | "cupsdAuthorize: No authentication data specified."); | |
964 | return; | |
965 | } | |
966 | ||
967 | /* | |
968 | * Get the server credentials... | |
969 | */ | |
970 | ||
971 | if ((server_creds = get_gss_creds(GSSServiceName)) == NULL) | |
f7deaa1a | 972 | return; |
f7deaa1a | 973 | |
974 | /* | |
975 | * Decode the authorization string to get the input token... | |
976 | */ | |
977 | ||
978 | len = strlen(authorization); | |
979 | input_token.value = malloc(len); | |
980 | input_token.value = httpDecode64_2(input_token.value, &len, | |
981 | authorization); | |
982 | input_token.length = len; | |
983 | ||
984 | /* | |
985 | * Accept the input token to get the authorization info... | |
986 | */ | |
987 | ||
988 | context = GSS_C_NO_CONTEXT; | |
989 | client_name = GSS_C_NO_NAME; | |
990 | major_status = gss_accept_sec_context(&minor_status, | |
991 | &context, | |
992 | server_creds, | |
993 | &input_token, | |
994 | GSS_C_NO_CHANNEL_BINDINGS, | |
995 | &client_name, | |
996 | NULL, | |
997 | &con->gss_output_token, | |
c24d2134 | 998 | &ret_flags, |
f7deaa1a | 999 | NULL, |
1000 | &con->gss_delegated_cred); | |
1001 | ||
1002 | if (GSS_ERROR(major_status)) | |
1003 | { | |
1004 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1005 | "cupsdAuthorize: Error accepting GSSAPI security " | |
1006 | "context"); | |
1007 | ||
1008 | if (context != GSS_C_NO_CONTEXT) | |
1009 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
76cd9e37 MS |
1010 | |
1011 | gss_release_cred(&minor_status, &server_creds); | |
f7deaa1a | 1012 | return; |
1013 | } | |
1014 | ||
1015 | /* | |
76cd9e37 MS |
1016 | * Release our credentials... |
1017 | */ | |
1018 | ||
1019 | gss_release_cred(&minor_status, &server_creds); | |
1020 | ||
1021 | /* | |
1022 | * Get the username associated with the client's credentials... | |
f7deaa1a | 1023 | */ |
1024 | ||
355e94dc MS |
1025 | if (!con->gss_delegated_cred) |
1026 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1027 | "cupsdAuthorize: No delegated credentials!"); | |
1028 | ||
1029 | if (major_status == GSS_S_CONTINUE_NEEDED) | |
1030 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1031 | "cupsdAuthorize: Credentials not complete"); | |
1032 | else if (major_status == GSS_S_COMPLETE) | |
f7deaa1a | 1033 | { |
1034 | major_status = gss_display_name(&minor_status, client_name, | |
1035 | &output_token, NULL); | |
1036 | ||
1037 | if (GSS_ERROR(major_status)) | |
1038 | { | |
1039 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
1040 | "cupsdAuthorize: Error getting username"); | |
1041 | gss_release_name(&minor_status, &client_name); | |
1042 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1043 | return; |
1044 | } | |
1045 | ||
1046 | gss_release_name(&minor_status, &client_name); | |
1047 | strlcpy(username, output_token.value, sizeof(username)); | |
355e94dc MS |
1048 | |
1049 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1050 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1051 | username); | |
f7deaa1a | 1052 | |
1053 | gss_release_buffer(&minor_status, &output_token); | |
1054 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
09a101d6 | 1055 | |
1056 | con->gss_have_creds = 1; | |
f7deaa1a | 1057 | } |
1058 | else | |
1059 | gss_release_name(&minor_status, &client_name); | |
1060 | } | |
1061 | #endif /* HAVE_GSSAPI */ | |
355e94dc | 1062 | else if (type != AUTH_NONE) |
ef416fc2 | 1063 | { |
355e94dc MS |
1064 | char scheme[256]; /* Auth scheme... */ |
1065 | static const char * const types[] = /* Auth types */ | |
1066 | { | |
1067 | "None", | |
1068 | "Basic", | |
1069 | "Digest", | |
1070 | "BasicDigest", | |
1071 | "Negotiate" | |
1072 | }; | |
1073 | ||
1074 | ||
1075 | if (sscanf(authorization, "%255s", scheme) != 1) | |
1076 | strcpy(scheme, "UNKNOWN"); | |
1077 | ||
1078 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1079 | "Bad authentication data \"%s ...\", expected \"%s ...\"", | |
1080 | scheme, types[type]); | |
ef416fc2 | 1081 | return; |
1082 | } | |
1083 | ||
1084 | /* | |
1085 | * If we get here, then we were able to validate the username and | |
1086 | * password - copy the validated username and password to the client | |
1087 | * data and return... | |
1088 | */ | |
1089 | ||
1090 | strlcpy(con->username, username, sizeof(con->username)); | |
1091 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1092 | } |
1093 | ||
1094 | ||
1095 | /* | |
1096 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1097 | */ | |
1098 | ||
1099 | int /* O - 1 if mask matches, 0 otherwise */ | |
1100 | cupsdCheckAuth( | |
1101 | unsigned ip[4], /* I - Client address */ | |
1102 | char *name, /* I - Client hostname */ | |
1103 | int name_len, /* I - Length of hostname */ | |
1104 | int num_masks, /* I - Number of masks */ | |
1105 | cupsd_authmask_t *masks) /* I - Masks */ | |
1106 | { | |
1107 | int i; /* Looping var */ | |
1108 | cupsd_netif_t *iface; /* Network interface */ | |
1109 | unsigned netip4; /* IPv4 network address */ | |
1110 | #ifdef AF_INET6 | |
1111 | unsigned netip6[4]; /* IPv6 network address */ | |
1112 | #endif /* AF_INET6 */ | |
1113 | ||
1114 | while (num_masks > 0) | |
1115 | { | |
1116 | switch (masks->type) | |
1117 | { | |
1118 | case AUTH_INTERFACE : | |
1119 | /* | |
1120 | * Check for a match with a network interface... | |
1121 | */ | |
1122 | ||
1123 | netip4 = htonl(ip[3]); | |
1124 | ||
1125 | #ifdef AF_INET6 | |
1126 | netip6[0] = htonl(ip[0]); | |
1127 | netip6[1] = htonl(ip[1]); | |
1128 | netip6[2] = htonl(ip[2]); | |
1129 | netip6[3] = htonl(ip[3]); | |
1130 | #endif /* AF_INET6 */ | |
1131 | ||
1132 | if (!strcmp(masks->mask.name.name, "*")) | |
1133 | { | |
1134 | /* | |
1135 | * Check against all local interfaces... | |
1136 | */ | |
1137 | ||
1138 | cupsdNetIFUpdate(); | |
1139 | ||
e00b005a | 1140 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1141 | iface; | |
1142 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1143 | { |
1144 | /* | |
1145 | * Only check local interfaces... | |
1146 | */ | |
1147 | ||
1148 | if (!iface->is_local) | |
1149 | continue; | |
1150 | ||
1151 | if (iface->address.addr.sa_family == AF_INET) | |
1152 | { | |
1153 | /* | |
1154 | * Check IPv4 address... | |
1155 | */ | |
1156 | ||
1157 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1158 | (iface->address.ipv4.sin_addr.s_addr & | |
1159 | iface->mask.ipv4.sin_addr.s_addr)) | |
1160 | return (1); | |
1161 | } | |
1162 | #ifdef AF_INET6 | |
1163 | else | |
1164 | { | |
1165 | /* | |
1166 | * Check IPv6 address... | |
1167 | */ | |
1168 | ||
1169 | for (i = 0; i < 4; i ++) | |
1170 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1171 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1172 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1173 | break; | |
1174 | ||
1175 | if (i == 4) | |
1176 | return (1); | |
1177 | } | |
1178 | #endif /* AF_INET6 */ | |
1179 | } | |
1180 | } | |
1181 | else | |
1182 | { | |
1183 | /* | |
1184 | * Check the named interface... | |
1185 | */ | |
1186 | ||
e00b005a | 1187 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1188 | iface; |
e00b005a | 1189 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1190 | { |
ed486911 | 1191 | if (strcmp(masks->mask.name.name, iface->name)) |
1192 | continue; | |
1193 | ||
ef416fc2 | 1194 | if (iface->address.addr.sa_family == AF_INET) |
1195 | { | |
1196 | /* | |
1197 | * Check IPv4 address... | |
1198 | */ | |
1199 | ||
1200 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1201 | (iface->address.ipv4.sin_addr.s_addr & | |
1202 | iface->mask.ipv4.sin_addr.s_addr)) | |
1203 | return (1); | |
1204 | } | |
1205 | #ifdef AF_INET6 | |
1206 | else | |
1207 | { | |
1208 | /* | |
1209 | * Check IPv6 address... | |
1210 | */ | |
1211 | ||
1212 | for (i = 0; i < 4; i ++) | |
1213 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1214 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1215 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1216 | break; | |
1217 | ||
1218 | if (i == 4) | |
1219 | return (1); | |
1220 | } | |
1221 | #endif /* AF_INET6 */ | |
1222 | } | |
1223 | } | |
1224 | break; | |
1225 | ||
1226 | case AUTH_NAME : | |
1227 | /* | |
1228 | * Check for exact name match... | |
1229 | */ | |
1230 | ||
1231 | if (!strcasecmp(name, masks->mask.name.name)) | |
1232 | return (1); | |
1233 | ||
1234 | /* | |
1235 | * Check for domain match... | |
1236 | */ | |
1237 | ||
1238 | if (name_len >= masks->mask.name.length && | |
1239 | masks->mask.name.name[0] == '.' && | |
bd7854cb | 1240 | !strcasecmp(name + name_len - masks->mask.name.length, |
1241 | masks->mask.name.name)) | |
ef416fc2 | 1242 | return (1); |
1243 | break; | |
1244 | ||
1245 | case AUTH_IP : | |
1246 | /* | |
1247 | * Check for IP/network address match... | |
1248 | */ | |
1249 | ||
1250 | for (i = 0; i < 4; i ++) | |
1251 | if ((ip[i] & masks->mask.ip.netmask[i]) != | |
1252 | masks->mask.ip.address[i]) | |
1253 | break; | |
1254 | ||
1255 | if (i == 4) | |
1256 | return (1); | |
1257 | break; | |
1258 | } | |
1259 | ||
1260 | masks ++; | |
1261 | num_masks --; | |
1262 | } | |
1263 | ||
1264 | return (0); | |
1265 | } | |
1266 | ||
1267 | ||
1268 | /* | |
1269 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1270 | */ | |
1271 | ||
1272 | int /* O - 1 if user is a member, 0 otherwise */ | |
1273 | cupsdCheckGroup( | |
1274 | const char *username, /* I - User name */ | |
1275 | struct passwd *user, /* I - System user info */ | |
1276 | const char *groupname) /* I - Group name */ | |
1277 | { | |
1278 | int i; /* Looping var */ | |
1279 | struct group *group; /* System group info */ | |
1280 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 1281 | #ifdef HAVE_MBR_UID_TO_UUID |
1282 | uuid_t useruuid, /* UUID for username */ | |
1283 | groupuuid; /* UUID for groupname */ | |
1284 | int is_member; /* True if user is a member of group */ | |
1285 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
ef416fc2 | 1286 | |
1287 | ||
1288 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1289 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1290 | username, user, groupname); | |
1291 | ||
1292 | /* | |
1293 | * Validate input... | |
1294 | */ | |
1295 | ||
1296 | if (!username || !groupname) | |
1297 | return (0); | |
1298 | ||
1299 | /* | |
1300 | * Check to see if the user is a member of the named group... | |
1301 | */ | |
1302 | ||
1303 | group = getgrnam(groupname); | |
1304 | endgrent(); | |
1305 | ||
1306 | if (group != NULL) | |
1307 | { | |
1308 | /* | |
1309 | * Group exists, check it... | |
1310 | */ | |
1311 | ||
1312 | for (i = 0; group->gr_mem[i]; i ++) | |
1313 | if (!strcasecmp(username, group->gr_mem[i])) | |
1314 | return (1); | |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * Group doesn't exist or user not in group list, check the group ID | |
1319 | * against the user's group ID... | |
1320 | */ | |
1321 | ||
1322 | if (user && group && group->gr_gid == user->pw_gid) | |
1323 | return (1); | |
1324 | ||
bd7854cb | 1325 | #ifdef HAVE_MBR_UID_TO_UUID |
1326 | /* | |
1327 | * Check group membership through MacOS X membership API... | |
1328 | */ | |
1329 | ||
1330 | if (user && group) | |
1331 | if (!mbr_uid_to_uuid(user->pw_uid, useruuid)) | |
1332 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) | |
1333 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1334 | if (is_member) | |
1335 | return (1); | |
1336 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
1337 | ||
ef416fc2 | 1338 | /* |
1339 | * Username not found, group not found, or user is not part of the | |
1340 | * system group... Check for a user and group in the MD5 password | |
1341 | * file... | |
1342 | */ | |
1343 | ||
e1d6a774 | 1344 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1345 | return (1); |
1346 | ||
1347 | /* | |
1348 | * If we get this far, then the user isn't part of the named group... | |
1349 | */ | |
1350 | ||
1351 | return (0); | |
1352 | } | |
1353 | ||
1354 | ||
1355 | /* | |
1356 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1357 | */ | |
1358 | ||
1359 | cupsd_location_t * /* O - New location */ | |
1360 | cupsdCopyLocation( | |
1361 | cupsd_location_t **loc) /* IO - Original location */ | |
1362 | { | |
1363 | int i; /* Looping var */ | |
ef416fc2 | 1364 | cupsd_location_t *temp; /* New location */ |
1365 | char location[HTTP_MAX_URI]; | |
1366 | /* Location of resource */ | |
1367 | ||
1368 | ||
ef416fc2 | 1369 | /* |
1370 | * Use a local copy of location because cupsdAddLocation may cause | |
1371 | * this memory to be moved... | |
1372 | */ | |
1373 | ||
1374 | strlcpy(location, (*loc)->location, sizeof(location)); | |
1375 | ||
1376 | if ((temp = cupsdAddLocation(location)) == NULL) | |
1377 | return (NULL); | |
1378 | ||
ef416fc2 | 1379 | /* |
1380 | * Copy the information from the original location to the new one. | |
1381 | */ | |
1382 | ||
1383 | temp->limit = (*loc)->limit; | |
1384 | temp->order_type = (*loc)->order_type; | |
1385 | temp->type = (*loc)->type; | |
1386 | temp->level = (*loc)->level; | |
1387 | temp->satisfy = (*loc)->satisfy; | |
1388 | temp->encryption = (*loc)->encryption; | |
1389 | ||
1390 | if ((temp->num_names = (*loc)->num_names) > 0) | |
1391 | { | |
1392 | /* | |
1393 | * Copy the names array... | |
1394 | */ | |
1395 | ||
1396 | if ((temp->names = calloc(temp->num_names, sizeof(char *))) == NULL) | |
1397 | { | |
1398 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1399 | "cupsdCopyLocation: Unable to allocate memory for %d names: %s", | |
1400 | temp->num_names, strerror(errno)); | |
bd7854cb | 1401 | |
1402 | cupsdDeleteLocation(temp); | |
ef416fc2 | 1403 | return (NULL); |
1404 | } | |
1405 | ||
1406 | for (i = 0; i < temp->num_names; i ++) | |
1407 | if ((temp->names[i] = strdup((*loc)->names[i])) == NULL) | |
1408 | { | |
1409 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1410 | "cupsdCopyLocation: Unable to copy name \"%s\": %s", | |
1411 | (*loc)->names[i], strerror(errno)); | |
1412 | ||
bd7854cb | 1413 | cupsdDeleteLocation(temp); |
ef416fc2 | 1414 | return (NULL); |
1415 | } | |
1416 | } | |
1417 | ||
1418 | if ((temp->num_allow = (*loc)->num_allow) > 0) | |
1419 | { | |
1420 | /* | |
1421 | * Copy allow rules... | |
1422 | */ | |
1423 | ||
1424 | if ((temp->allow = calloc(temp->num_allow, sizeof(cupsd_authmask_t))) == NULL) | |
1425 | { | |
1426 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1427 | "cupsdCopyLocation: Unable to allocate memory for %d allow rules: %s", | |
1428 | temp->num_allow, strerror(errno)); | |
bd7854cb | 1429 | cupsdDeleteLocation(temp); |
ef416fc2 | 1430 | return (NULL); |
1431 | } | |
1432 | ||
1433 | for (i = 0; i < temp->num_allow; i ++) | |
1434 | switch (temp->allow[i].type = (*loc)->allow[i].type) | |
1435 | { | |
1436 | case AUTH_NAME : | |
1437 | temp->allow[i].mask.name.length = (*loc)->allow[i].mask.name.length; | |
1438 | temp->allow[i].mask.name.name = strdup((*loc)->allow[i].mask.name.name); | |
1439 | ||
1440 | if (temp->allow[i].mask.name.name == NULL) | |
1441 | { | |
1442 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1443 | "cupsdCopyLocation: Unable to copy allow name \"%s\": %s", | |
1444 | (*loc)->allow[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1445 | cupsdDeleteLocation(temp); |
ef416fc2 | 1446 | return (NULL); |
1447 | } | |
1448 | break; | |
1449 | case AUTH_IP : | |
1450 | memcpy(&(temp->allow[i].mask.ip), &((*loc)->allow[i].mask.ip), | |
1451 | sizeof(cupsd_ipmask_t)); | |
1452 | break; | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | if ((temp->num_deny = (*loc)->num_deny) > 0) | |
1457 | { | |
1458 | /* | |
1459 | * Copy deny rules... | |
1460 | */ | |
1461 | ||
1462 | if ((temp->deny = calloc(temp->num_deny, sizeof(cupsd_authmask_t))) == NULL) | |
1463 | { | |
1464 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1465 | "cupsdCopyLocation: Unable to allocate memory for %d deny rules: %s", | |
1466 | temp->num_deny, strerror(errno)); | |
bd7854cb | 1467 | cupsdDeleteLocation(temp); |
ef416fc2 | 1468 | return (NULL); |
1469 | } | |
1470 | ||
1471 | for (i = 0; i < temp->num_deny; i ++) | |
1472 | switch (temp->deny[i].type = (*loc)->deny[i].type) | |
1473 | { | |
1474 | case AUTH_NAME : | |
1475 | temp->deny[i].mask.name.length = (*loc)->deny[i].mask.name.length; | |
1476 | temp->deny[i].mask.name.name = strdup((*loc)->deny[i].mask.name.name); | |
1477 | ||
1478 | if (temp->deny[i].mask.name.name == NULL) | |
1479 | { | |
1480 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1481 | "cupsdCopyLocation: Unable to copy deny name \"%s\": %s", | |
1482 | (*loc)->deny[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1483 | cupsdDeleteLocation(temp); |
ef416fc2 | 1484 | return (NULL); |
1485 | } | |
1486 | break; | |
1487 | case AUTH_IP : | |
1488 | memcpy(&(temp->deny[i].mask.ip), &((*loc)->deny[i].mask.ip), | |
1489 | sizeof(cupsd_ipmask_t)); | |
1490 | break; | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | return (temp); | |
1495 | } | |
1496 | ||
1497 | ||
1498 | /* | |
1499 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1500 | */ | |
1501 | ||
1502 | void | |
1503 | cupsdDeleteAllLocations(void) | |
1504 | { | |
ef416fc2 | 1505 | cupsd_location_t *loc; /* Current location */ |
1506 | ||
1507 | ||
1508 | /* | |
1509 | * Free all of the allow/deny records first... | |
1510 | */ | |
1511 | ||
bd7854cb | 1512 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1513 | loc; | |
1514 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1515 | cupsdDeleteLocation(loc); |
1516 | ||
1517 | /* | |
1518 | * Then free the location array... | |
1519 | */ | |
1520 | ||
bd7854cb | 1521 | cupsArrayDelete(Locations); |
1522 | Locations = NULL; | |
ef416fc2 | 1523 | } |
1524 | ||
1525 | ||
1526 | /* | |
1527 | * 'cupsdDeleteLocation()' - Free all memory used by a location. | |
1528 | */ | |
1529 | ||
1530 | void | |
1531 | cupsdDeleteLocation( | |
1532 | cupsd_location_t *loc) /* I - Location to delete */ | |
1533 | { | |
1534 | int i; /* Looping var */ | |
1535 | cupsd_authmask_t *mask; /* Current mask */ | |
1536 | ||
1537 | ||
bd7854cb | 1538 | cupsArrayRemove(Locations, loc); |
1539 | ||
ef416fc2 | 1540 | for (i = loc->num_names - 1; i >= 0; i --) |
1541 | free(loc->names[i]); | |
1542 | ||
1543 | if (loc->num_names > 0) | |
1544 | free(loc->names); | |
1545 | ||
1546 | for (i = loc->num_allow, mask = loc->allow; i > 0; i --, mask ++) | |
1547 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1548 | free(mask->mask.name.name); | |
1549 | ||
1550 | if (loc->num_allow > 0) | |
1551 | free(loc->allow); | |
1552 | ||
1553 | for (i = loc->num_deny, mask = loc->deny; i > 0; i --, mask ++) | |
1554 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1555 | free(mask->mask.name.name); | |
1556 | ||
1557 | if (loc->num_deny > 0) | |
1558 | free(loc->deny); | |
bd7854cb | 1559 | |
1560 | free(loc->location); | |
1561 | free(loc); | |
ef416fc2 | 1562 | } |
1563 | ||
1564 | ||
1565 | /* | |
1566 | * 'cupsdDenyHost()' - Add a host name that is not allowed to access the | |
1567 | * location. | |
1568 | */ | |
1569 | ||
1570 | void | |
1571 | cupsdDenyHost(cupsd_location_t *loc, /* I - Location to add to */ | |
1572 | char *name) /* I - Name of host or domain to add */ | |
1573 | { | |
1574 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1575 | char ifname[32], /* Interface name */ | |
1576 | *ifptr; /* Pointer to end of name */ | |
1577 | ||
1578 | ||
1579 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdDenyHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 1580 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 1581 | |
1582 | if ((temp = add_deny(loc)) == NULL) | |
1583 | return; | |
1584 | ||
bd7854cb | 1585 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 1586 | { |
1587 | /* | |
1588 | * Deny *interface*... | |
1589 | */ | |
1590 | ||
1591 | temp->type = AUTH_INTERFACE; | |
1592 | temp->mask.name.name = strdup("*"); | |
1593 | temp->mask.name.length = 1; | |
1594 | } | |
bd7854cb | 1595 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 1596 | { |
1597 | /* | |
1598 | * Deny *interface*... | |
1599 | */ | |
1600 | ||
1601 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
1602 | ||
1603 | ifptr = ifname + strlen(ifname); | |
1604 | ||
1605 | if (ifptr[-1] == ')') | |
1606 | { | |
1607 | ifptr --; | |
1608 | *ifptr = '\0'; | |
1609 | } | |
1610 | ||
1611 | temp->type = AUTH_INTERFACE; | |
1612 | temp->mask.name.name = strdup(ifname); | |
1613 | temp->mask.name.length = ifptr - ifname; | |
1614 | } | |
1615 | else | |
1616 | { | |
1617 | /* | |
1618 | * Deny name... | |
1619 | */ | |
1620 | ||
1621 | temp->type = AUTH_NAME; | |
1622 | temp->mask.name.name = strdup(name); | |
1623 | temp->mask.name.length = strlen(name); | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | ||
1628 | /* | |
1629 | * 'cupsdDenyIP()' - Add an IP address or network that is not allowed to | |
1630 | * access the location. | |
1631 | */ | |
1632 | ||
1633 | void | |
1634 | cupsdDenyIP(cupsd_location_t *loc, /* I - Location to add to */ | |
1635 | unsigned address[4],/* I - IP address to add */ | |
1636 | unsigned netmask[4])/* I - Netmask of address */ | |
1637 | { | |
1638 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1639 | ||
1640 | ||
1641 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1642 | "cupsdDenyIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 1643 | loc, loc->location ? loc->location : "nil", |
1644 | address[0], address[1], address[2], address[3], | |
1645 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 1646 | |
1647 | if ((temp = add_deny(loc)) == NULL) | |
1648 | return; | |
1649 | ||
1650 | temp->type = AUTH_IP; | |
1651 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
1652 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
1653 | } | |
1654 | ||
1655 | ||
1656 | /* | |
1657 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1658 | */ | |
1659 | ||
1660 | cupsd_location_t * /* O - Location that matches */ | |
1661 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1662 | http_state_t state) /* I - HTTP state/request */ | |
1663 | { | |
ef416fc2 | 1664 | char uri[HTTP_MAX_URI], |
1665 | /* URI in request... */ | |
1666 | *uriptr; /* Pointer into URI */ | |
1667 | cupsd_location_t *loc, /* Current location */ | |
1668 | *best; /* Best match for location so far */ | |
1669 | int bestlen; /* Length of best match */ | |
1670 | int limit; /* Limit field */ | |
1671 | static const int limits[] = /* Map http_status_t to AUTH_LIMIT_xyz */ | |
1672 | { | |
1673 | AUTH_LIMIT_ALL, | |
1674 | AUTH_LIMIT_OPTIONS, | |
1675 | AUTH_LIMIT_GET, | |
1676 | AUTH_LIMIT_GET, | |
1677 | AUTH_LIMIT_HEAD, | |
1678 | AUTH_LIMIT_POST, | |
1679 | AUTH_LIMIT_POST, | |
1680 | AUTH_LIMIT_POST, | |
1681 | AUTH_LIMIT_PUT, | |
1682 | AUTH_LIMIT_PUT, | |
1683 | AUTH_LIMIT_DELETE, | |
1684 | AUTH_LIMIT_TRACE, | |
1685 | AUTH_LIMIT_ALL, | |
1686 | AUTH_LIMIT_ALL | |
1687 | }; | |
1688 | ||
1689 | ||
1690 | /* | |
1691 | * First copy the connection URI to a local string so we have drop | |
1692 | * any .ppd extension from the pathname in /printers or /classes | |
1693 | * URIs... | |
1694 | */ | |
1695 | ||
1696 | strlcpy(uri, path, sizeof(uri)); | |
1697 | ||
1698 | if (!strncmp(uri, "/printers/", 10) || | |
1699 | !strncmp(uri, "/classes/", 9)) | |
1700 | { | |
1701 | /* | |
1702 | * Check if the URI has .ppd on the end... | |
1703 | */ | |
1704 | ||
1705 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1706 | ||
1707 | if (!strcmp(uriptr, ".ppd")) | |
1708 | *uriptr = '\0'; | |
1709 | } | |
1710 | ||
1711 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1712 | ||
1713 | /* | |
1714 | * Loop through the list of locations to find a match... | |
1715 | */ | |
1716 | ||
1717 | limit = limits[state]; | |
1718 | best = NULL; | |
1719 | bestlen = 0; | |
1720 | ||
bd7854cb | 1721 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1722 | loc; | |
1723 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1724 | { |
1725 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1726 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1727 | |
1728 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1729 | { | |
1730 | /* | |
1731 | * Use case-insensitive comparison for queue names... | |
1732 | */ | |
1733 | ||
e1d6a774 | 1734 | if (loc->length > bestlen && loc->location && |
bd7854cb | 1735 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1736 | loc->location[0] == '/' && |
1737 | (limit & loc->limit) != 0) | |
1738 | { | |
1739 | best = loc; | |
1740 | bestlen = loc->length; | |
1741 | } | |
1742 | } | |
1743 | else | |
1744 | { | |
1745 | /* | |
1746 | * Use case-sensitive comparison for other URIs... | |
1747 | */ | |
1748 | ||
e1d6a774 | 1749 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1750 | !strncmp(uri, loc->location, loc->length) && |
1751 | loc->location[0] == '/' && | |
1752 | (limit & loc->limit) != 0) | |
1753 | { | |
1754 | best = loc; | |
1755 | bestlen = loc->length; | |
1756 | } | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /* | |
1761 | * Return the match, if any... | |
1762 | */ | |
1763 | ||
1764 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1765 | best ? best->location : "NONE"); | |
1766 | ||
1767 | return (best); | |
1768 | } | |
1769 | ||
1770 | ||
1771 | /* | |
1772 | * 'cupsdFindLocation()' - Find the named location. | |
1773 | */ | |
1774 | ||
1775 | cupsd_location_t * /* O - Location that matches */ | |
1776 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1777 | { | |
bd7854cb | 1778 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1779 | |
1780 | ||
bd7854cb | 1781 | key.location = (char *)location; |
ef416fc2 | 1782 | |
bd7854cb | 1783 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1784 | } |
1785 | ||
1786 | ||
ef416fc2 | 1787 | /* |
1788 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1789 | */ | |
1790 | ||
1791 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1792 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1793 | const char *owner)/* I - Owner of object */ | |
1794 | { | |
1795 | int i, j, /* Looping vars */ | |
1796 | auth; /* Authorization status */ | |
1797 | unsigned address[4]; /* Authorization address */ | |
1798 | cupsd_location_t *best; /* Best match for location so far */ | |
1799 | int hostlen; /* Length of hostname */ | |
db1f069b MS |
1800 | char username[256], /* Username to authorize */ |
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 | { | |
1812 | "NONE", | |
1813 | "BASIC", | |
1814 | "DIGEST", | |
f7deaa1a | 1815 | "BASICDIGEST", |
1816 | "KERBEROS" | |
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 | ||
1845 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
bd7854cb | 1846 | "cupsdIsAuthorized: level=AUTH_%s, type=AUTH_%s, " |
1847 | "satisfy=AUTH_SATISFY_%s, num_names=%d", | |
ef416fc2 | 1848 | levels[best->level], types[best->type], |
1849 | best->satisfy ? "ANY" : "ALL", best->num_names); | |
1850 | ||
1851 | if (best->limit == AUTH_LIMIT_IPP) | |
1852 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", | |
1853 | best->op, ippOpString(best->op)); | |
1854 | ||
1855 | /* | |
1856 | * Check host/ip-based accesses... | |
1857 | */ | |
1858 | ||
1859 | #ifdef AF_INET6 | |
1860 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1861 | { | |
1862 | /* | |
1863 | * Copy IPv6 address... | |
1864 | */ | |
1865 | ||
1866 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1867 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1868 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1869 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1870 | } | |
1871 | else | |
1872 | #endif /* AF_INET6 */ | |
1873 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
1874 | { | |
1875 | /* | |
1876 | * Copy IPv4 address... | |
1877 | */ | |
1878 | ||
1879 | address[0] = 0; | |
1880 | address[1] = 0; | |
1881 | address[2] = 0; | |
1882 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
1883 | } | |
1884 | else | |
1885 | memset(address, 0, sizeof(address)); | |
1886 | ||
1887 | hostlen = strlen(con->http.hostname); | |
1888 | ||
1889 | if (!strcasecmp(con->http.hostname, "localhost")) | |
1890 | { | |
1891 | /* | |
4744bd90 | 1892 | * Access from localhost (127.0.0.1 or ::1) is always allowed... |
ef416fc2 | 1893 | */ |
1894 | ||
1895 | auth = AUTH_ALLOW; | |
1896 | } | |
1897 | else | |
1898 | { | |
1899 | /* | |
1900 | * Do authorization checks on the domain/address... | |
1901 | */ | |
1902 | ||
1903 | switch (best->order_type) | |
1904 | { | |
1905 | default : | |
1906 | auth = AUTH_DENY; /* anti-compiler-warning-code */ | |
1907 | break; | |
1908 | ||
1909 | case AUTH_ALLOW : /* Order Deny,Allow */ | |
1910 | auth = AUTH_ALLOW; | |
1911 | ||
1912 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1913 | best->num_deny, best->deny)) | |
1914 | auth = AUTH_DENY; | |
1915 | ||
1916 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1917 | best->num_allow, best->allow)) | |
1918 | auth = AUTH_ALLOW; | |
1919 | break; | |
1920 | ||
1921 | case AUTH_DENY : /* Order Allow,Deny */ | |
1922 | auth = AUTH_DENY; | |
1923 | ||
1924 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1925 | best->num_allow, best->allow)) | |
1926 | auth = AUTH_ALLOW; | |
1927 | ||
1928 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1929 | best->num_deny, best->deny)) | |
1930 | auth = AUTH_DENY; | |
1931 | break; | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=AUTH_%s...", | |
1936 | auth ? "DENY" : "ALLOW"); | |
1937 | ||
1938 | if (auth == AUTH_DENY && best->satisfy == AUTH_SATISFY_ALL) | |
1939 | return (HTTP_FORBIDDEN); | |
1940 | ||
1941 | #ifdef HAVE_SSL | |
1942 | /* | |
1943 | * See if encryption is required... | |
1944 | */ | |
1945 | ||
f7deaa1a | 1946 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
a74454a7 | 1947 | strcasecmp(con->http.hostname, "localhost") && |
f7deaa1a | 1948 | best->satisfy == AUTH_SATISFY_ALL) && |
7594b224 | 1949 | !(best->type == AUTH_NEGOTIATE || |
1950 | (best->type == AUTH_NONE && DefaultAuthType == AUTH_NEGOTIATE))) | |
ef416fc2 | 1951 | { |
355e94dc | 1952 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1953 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
1954 | return (HTTP_UPGRADE_REQUIRED); | |
1955 | } | |
1956 | #endif /* HAVE_SSL */ | |
1957 | ||
1958 | /* | |
1959 | * Now see what access level is required... | |
1960 | */ | |
1961 | ||
1962 | if (best->level == AUTH_ANON || /* Anonymous access - allow it */ | |
1963 | (best->type == AUTH_NONE && best->num_names == 0)) | |
1964 | return (HTTP_OK); | |
1965 | ||
fa73b229 | 1966 | if (!con->username[0] && best->type == AUTH_NONE && |
1967 | best->limit == AUTH_LIMIT_IPP) | |
ef416fc2 | 1968 | { |
1969 | /* | |
1970 | * Check for unauthenticated username... | |
1971 | */ | |
1972 | ||
1973 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
1974 | ||
1975 | ||
1976 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
1977 | if (attr) | |
1978 | { | |
355e94dc | 1979 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1980 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
1981 | attr->values[0].string.text); | |
db1f069b | 1982 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 1983 | } |
fa73b229 | 1984 | else if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) |
ef416fc2 | 1985 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1986 | else | |
1987 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1988 | } | |
fa73b229 | 1989 | else |
1990 | { | |
355e94dc | 1991 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 1992 | con->username); |
1993 | ||
f7deaa1a | 1994 | #ifdef HAVE_AUTHORIZATION_H |
1995 | if (!con->username[0] && !con->authref) | |
1996 | #else | |
fa73b229 | 1997 | if (!con->username[0]) |
f7deaa1a | 1998 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 1999 | { |
2000 | if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) | |
2001 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ | |
2002 | else | |
2003 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2004 | } | |
2005 | ||
db1f069b | 2006 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 2007 | } |
ef416fc2 | 2008 | |
2009 | /* | |
fa73b229 | 2010 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 2011 | * access... (root always matches) |
2012 | */ | |
2013 | ||
fa73b229 | 2014 | if (!strcmp(username, "root")) |
ef416fc2 | 2015 | return (HTTP_OK); |
2016 | ||
db1f069b MS |
2017 | /* |
2018 | * Strip any @domain or @KDC from the username and owner... | |
2019 | */ | |
2020 | ||
2021 | if ((ptr = strchr(username, '@')) != NULL) | |
2022 | *ptr = '\0'; | |
2023 | ||
2024 | if (owner) | |
2025 | { | |
2026 | strlcpy(ownername, owner, sizeof(ownername)); | |
2027 | ||
2028 | if ((ptr = strchr(ownername, '@')) != NULL) | |
2029 | *ptr = '\0'; | |
2030 | } | |
2031 | else | |
2032 | ownername[0] = '\0'; | |
2033 | ||
ef416fc2 | 2034 | /* |
2035 | * Get the user info... | |
2036 | */ | |
2037 | ||
f7deaa1a | 2038 | if (username[0]) |
2039 | { | |
2040 | pw = getpwnam(username); | |
2041 | endpwent(); | |
2042 | } | |
2043 | else | |
2044 | pw = NULL; | |
ef416fc2 | 2045 | |
2046 | if (best->level == AUTH_USER) | |
2047 | { | |
2048 | /* | |
2049 | * If there are no names associated with this location, then | |
2050 | * any valid user is OK... | |
2051 | */ | |
2052 | ||
2053 | if (best->num_names == 0) | |
2054 | return (HTTP_OK); | |
2055 | ||
2056 | /* | |
2057 | * Otherwise check the user list and return OK if this user is | |
2058 | * allowed... | |
2059 | */ | |
2060 | ||
2061 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2062 | "cupsdIsAuthorized: Checking user membership..."); | |
2063 | ||
f7deaa1a | 2064 | #ifdef HAVE_AUTHORIZATION_H |
2065 | /* | |
2066 | * If an authorization reference was supplied it must match a right name... | |
2067 | */ | |
2068 | ||
2069 | if (con->authref) | |
2070 | { | |
2071 | for (i = 0; i < best->num_names; i ++) | |
2072 | { | |
2073 | if (!strncasecmp(best->names[i], "@AUTHKEY(", 9) && | |
2074 | check_authref(con, best->names[i] + 9)) | |
2075 | return (HTTP_OK); | |
2076 | else if (!strcasecmp(best->names[i], "@SYSTEM") && | |
2077 | SystemGroupAuthKey && | |
2078 | check_authref(con, SystemGroupAuthKey)) | |
2079 | return (HTTP_OK); | |
2080 | } | |
2081 | ||
2082 | return (HTTP_UNAUTHORIZED); | |
2083 | } | |
2084 | #endif /* HAVE_AUTHORIZATION_H */ | |
2085 | ||
ef416fc2 | 2086 | for (i = 0; i < best->num_names; i ++) |
2087 | { | |
2088 | if (!strcasecmp(best->names[i], "@OWNER") && owner && | |
db1f069b | 2089 | !strcasecmp(username, ownername)) |
ef416fc2 | 2090 | return (HTTP_OK); |
2091 | else if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2092 | { | |
2093 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2094 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2095 | return (HTTP_OK); |
2096 | } | |
2097 | else if (best->names[i][0] == '@') | |
2098 | { | |
fa73b229 | 2099 | if (cupsdCheckGroup(username, pw, best->names[i] + 1)) |
ef416fc2 | 2100 | return (HTTP_OK); |
2101 | } | |
fa73b229 | 2102 | else if (!strcasecmp(username, best->names[i])) |
ef416fc2 | 2103 | return (HTTP_OK); |
2104 | } | |
2105 | ||
2106 | return (HTTP_UNAUTHORIZED); | |
2107 | } | |
2108 | ||
2109 | /* | |
2110 | * Check to see if this user is in any of the named groups... | |
2111 | */ | |
2112 | ||
2113 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2114 | "cupsdIsAuthorized: Checking group membership..."); | |
2115 | ||
2116 | /* | |
2117 | * Check to see if this user is in any of the named groups... | |
2118 | */ | |
2119 | ||
2120 | for (i = 0; i < best->num_names; i ++) | |
2121 | { | |
2122 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2123 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
2124 | best->names[i]); | |
2125 | ||
2126 | if (!strcasecmp(best->names[i], "@SYSTEM")) | |
2127 | { | |
2128 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 2129 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 2130 | return (HTTP_OK); |
2131 | } | |
fa73b229 | 2132 | else if (cupsdCheckGroup(username, pw, best->names[i])) |
ef416fc2 | 2133 | return (HTTP_OK); |
2134 | } | |
2135 | ||
2136 | /* | |
2137 | * The user isn't part of the specified group, so deny access... | |
2138 | */ | |
2139 | ||
355e94dc | 2140 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2141 | "cupsdIsAuthorized: User not in group(s)!"); |
2142 | ||
2143 | return (HTTP_UNAUTHORIZED); | |
2144 | } | |
2145 | ||
2146 | ||
2147 | /* | |
2148 | * 'add_allow()' - Add an allow mask to the location. | |
2149 | */ | |
2150 | ||
2151 | static cupsd_authmask_t * /* O - New mask record */ | |
2152 | add_allow(cupsd_location_t *loc) /* I - Location to add to */ | |
2153 | { | |
2154 | cupsd_authmask_t *temp; /* New mask record */ | |
2155 | ||
2156 | ||
2157 | /* | |
2158 | * Range-check... | |
2159 | */ | |
2160 | ||
2161 | if (loc == NULL) | |
2162 | return (NULL); | |
2163 | ||
2164 | /* | |
2165 | * Try to allocate memory for the record... | |
2166 | */ | |
2167 | ||
2168 | if (loc->num_allow == 0) | |
2169 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2170 | else | |
2171 | temp = realloc(loc->allow, sizeof(cupsd_authmask_t) * (loc->num_allow + 1)); | |
2172 | ||
2173 | if (temp == NULL) | |
2174 | return (NULL); | |
2175 | ||
2176 | loc->allow = temp; | |
2177 | temp += loc->num_allow; | |
2178 | loc->num_allow ++; | |
2179 | ||
2180 | /* | |
2181 | * Clear the mask record and return... | |
2182 | */ | |
2183 | ||
2184 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2185 | return (temp); | |
2186 | } | |
2187 | ||
2188 | ||
2189 | /* | |
2190 | * 'add_deny()' - Add a deny mask to the location. | |
2191 | */ | |
2192 | ||
2193 | static cupsd_authmask_t * /* O - New mask record */ | |
2194 | add_deny(cupsd_location_t *loc) /* I - Location to add to */ | |
2195 | { | |
2196 | cupsd_authmask_t *temp; /* New mask record */ | |
2197 | ||
2198 | ||
2199 | /* | |
2200 | * Range-check... | |
2201 | */ | |
2202 | ||
2203 | if (loc == NULL) | |
2204 | return (NULL); | |
2205 | ||
2206 | /* | |
2207 | * Try to allocate memory for the record... | |
2208 | */ | |
2209 | ||
2210 | if (loc->num_deny == 0) | |
2211 | temp = malloc(sizeof(cupsd_authmask_t)); | |
2212 | else | |
2213 | temp = realloc(loc->deny, sizeof(cupsd_authmask_t) * (loc->num_deny + 1)); | |
2214 | ||
2215 | if (temp == NULL) | |
2216 | return (NULL); | |
2217 | ||
2218 | loc->deny = temp; | |
2219 | temp += loc->num_deny; | |
2220 | loc->num_deny ++; | |
2221 | ||
2222 | /* | |
2223 | * Clear the mask record and return... | |
2224 | */ | |
2225 | ||
2226 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
2227 | return (temp); | |
2228 | } | |
2229 | ||
2230 | ||
f7deaa1a | 2231 | #ifdef HAVE_AUTHORIZATION_H |
2232 | /* | |
2233 | * 'check_authref()' - Check if an authorization services reference has the | |
2234 | * supplied right. | |
2235 | */ | |
2236 | ||
2237 | static int /* O - 1 if right is valid, 0 otherwise */ | |
2238 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
2239 | const char *right) /* I - Right name */ | |
2240 | { | |
2241 | OSStatus status; /* OS Status */ | |
2242 | AuthorizationItem authright; /* Authorization right */ | |
2243 | AuthorizationRights authrights; /* Authorization rights */ | |
2244 | AuthorizationFlags authflags; /* Authorization flags */ | |
2245 | ||
2246 | ||
2247 | /* | |
2248 | * Check to see if the user is allowed to perform the task... | |
2249 | */ | |
2250 | ||
2251 | if (!con->authref) | |
2252 | return (0); | |
2253 | ||
2254 | authright.name = right; | |
2255 | authright.valueLength = 0; | |
2256 | authright.value = NULL; | |
2257 | authright.flags = 0; | |
2258 | ||
2259 | authrights.count = 1; | |
2260 | authrights.items = &authright; | |
2261 | ||
2262 | authflags = kAuthorizationFlagDefaults | | |
2263 | kAuthorizationFlagExtendRights; | |
2264 | ||
2265 | if ((status = AuthorizationCopyRights(con->authref, &authrights, | |
2266 | kAuthorizationEmptyEnvironment, | |
2267 | authflags, NULL)) != 0) | |
2268 | { | |
2269 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2270 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2271 | authright.name, (int)status, cssmErrorString(status)); | |
2272 | return (0); | |
2273 | } | |
2274 | ||
2275 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2276 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2277 | authright.name); | |
2278 | ||
2279 | return (1); | |
2280 | } | |
2281 | #endif /* HAVE_AUTHORIZATION_H */ | |
2282 | ||
2283 | ||
bd7854cb | 2284 | /* |
2285 | * 'compare_locations()' - Compare two locations. | |
2286 | */ | |
2287 | ||
2288 | static int /* O - Result of comparison */ | |
2289 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2290 | cupsd_location_t *b) /* I - Second location */ | |
2291 | { | |
2292 | return (strcmp(b->location, a->location)); | |
2293 | } | |
2294 | ||
2295 | ||
d09495fa | 2296 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 2297 | /* |
2298 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2299 | * as needed. | |
2300 | */ | |
2301 | ||
2302 | static char * /* O - Encrypted password */ | |
2303 | cups_crypt(const char *pw, /* I - Password string */ | |
2304 | const char *salt) /* I - Salt (key) string */ | |
2305 | { | |
bd7854cb | 2306 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2307 | { |
2308 | /* | |
2309 | * Use MD5 passwords without the benefit of PAM; this is for | |
2310 | * Slackware Linux, and the algorithm was taken from the | |
2311 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2312 | */ | |
2313 | ||
2314 | int i; /* Looping var */ | |
2315 | unsigned long n; /* Output number */ | |
2316 | int pwlen; /* Length of password string */ | |
2317 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2318 | char *ptr; /* Pointer into result string */ | |
2319 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2320 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2321 | unsigned char digest[16]; /* MD5 digest result */ | |
2322 | static char result[120]; /* Final password string */ | |
2323 | ||
2324 | ||
2325 | /* | |
2326 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2327 | * Get a maximum of 8 characters of salt data after $1$... | |
2328 | */ | |
2329 | ||
2330 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2331 | if (*salt_end == '$') | |
2332 | break; | |
2333 | ||
2334 | /* | |
2335 | * Compute the MD5 sum we need... | |
2336 | */ | |
2337 | ||
2338 | pwlen = strlen(pw); | |
2339 | ||
757d2cad | 2340 | _cupsMD5Init(&state); |
2341 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2342 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2343 | |
757d2cad | 2344 | _cupsMD5Init(&state2); |
2345 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2346 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2347 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2348 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2349 | |
2350 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2351 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2352 | |
2353 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2354 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2355 | |
757d2cad | 2356 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2357 | |
2358 | for (i = 0; i < 1000; i ++) | |
2359 | { | |
757d2cad | 2360 | _cupsMD5Init(&state); |
ef416fc2 | 2361 | |
2362 | if (i & 1) | |
757d2cad | 2363 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2364 | else |
757d2cad | 2365 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2366 | |
2367 | if (i % 3) | |
757d2cad | 2368 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2369 | |
2370 | if (i % 7) | |
757d2cad | 2371 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2372 | |
2373 | if (i & 1) | |
757d2cad | 2374 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2375 | else |
757d2cad | 2376 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2377 | |
757d2cad | 2378 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2379 | } |
2380 | ||
2381 | /* | |
2382 | * Copy the final sum to the result string and return... | |
2383 | */ | |
2384 | ||
2385 | memcpy(result, salt, salt_end - salt); | |
2386 | ptr = result + (salt_end - salt); | |
2387 | *ptr++ = '$'; | |
2388 | ||
2389 | for (i = 0; i < 5; i ++, ptr += 4) | |
2390 | { | |
2391 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2392 | ||
2393 | if (i < 4) | |
2394 | n |= digest[i + 12]; | |
2395 | else | |
2396 | n |= digest[5]; | |
2397 | ||
2398 | to64(ptr, n, 4); | |
2399 | } | |
2400 | ||
2401 | to64(ptr, digest[11], 2); | |
2402 | ptr += 2; | |
2403 | *ptr = '\0'; | |
2404 | ||
2405 | return (result); | |
2406 | } | |
2407 | else | |
2408 | { | |
2409 | /* | |
2410 | * Use the standard crypt() function... | |
2411 | */ | |
2412 | ||
2413 | return (crypt(pw, salt)); | |
2414 | } | |
2415 | } | |
d09495fa | 2416 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
ef416fc2 | 2417 | |
2418 | ||
f7deaa1a | 2419 | #ifdef HAVE_GSSAPI |
2420 | /* | |
2421 | * 'get_gss_creds()' - Obtain GSS credentials. | |
2422 | */ | |
2423 | ||
2424 | static gss_cred_id_t /* O - Server credentials */ | |
2425 | get_gss_creds(const char *service_name) /* I - Service name */ | |
2426 | { | |
2427 | OM_uint32 major_status, /* Major status code */ | |
2428 | minor_status; /* Minor status code */ | |
2429 | gss_name_t server_name; /* Server name */ | |
2430 | gss_cred_id_t server_creds; /* Server credentials */ | |
2431 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
2432 | /* Service name token */ | |
2433 | char buf[1024], /* Service name buffer */ | |
2434 | fqdn[HTTP_MAX_URI]; /* Hostname of server */ | |
2435 | ||
2436 | ||
2437 | snprintf(buf, sizeof(buf), "%s@%s", service_name, | |
2438 | httpGetHostname(NULL, fqdn, sizeof(fqdn))); | |
2439 | ||
2440 | token.value = buf; | |
2441 | token.length = strlen(buf); | |
2442 | server_name = GSS_C_NO_NAME; | |
2443 | major_status = gss_import_name(&minor_status, &token, | |
2444 | GSS_C_NT_HOSTBASED_SERVICE, | |
2445 | &server_name); | |
2446 | ||
2447 | memset(&token, 0, sizeof(token)); | |
2448 | ||
2449 | if (GSS_ERROR(major_status)) | |
2450 | { | |
2451 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2452 | "gss_import_name() failed"); | |
2453 | return (NULL); | |
2454 | } | |
2455 | ||
2456 | major_status = gss_display_name(&minor_status, server_name, &token, NULL); | |
2457 | ||
2458 | if (GSS_ERROR(major_status)) | |
2459 | { | |
2460 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2461 | "gss_display_name() failed"); | |
2462 | return (NULL); | |
2463 | } | |
2464 | ||
c24d2134 MS |
2465 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2466 | "get_gss_creds: Attempting to acquire credentials for %s...", | |
f7deaa1a | 2467 | (char *)token.value); |
2468 | ||
2469 | server_creds = GSS_C_NO_CREDENTIAL; | |
2470 | major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE, | |
2471 | GSS_C_NO_OID_SET, GSS_C_ACCEPT, | |
2472 | &server_creds, NULL, NULL); | |
2473 | if (GSS_ERROR(major_status)) | |
2474 | { | |
2475 | cupsdLogGSSMessage(CUPSD_LOG_WARN, major_status, minor_status, | |
2476 | "gss_acquire_cred() failed"); | |
2477 | gss_release_name(&minor_status, &server_name); | |
2478 | gss_release_buffer(&minor_status, &token); | |
2479 | return (NULL); | |
2480 | } | |
2481 | ||
c24d2134 MS |
2482 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
2483 | "get_gss_creds: Credentials acquired successfully for %s.", | |
f7deaa1a | 2484 | (char *)token.value); |
2485 | ||
2486 | gss_release_name(&minor_status, &server_name); | |
2487 | gss_release_buffer(&minor_status, &token); | |
2488 | ||
2489 | return (server_creds); | |
2490 | } | |
2491 | #endif /* HAVE_GSSAPI */ | |
2492 | ||
2493 | ||
e1d6a774 | 2494 | /* |
2495 | * 'get_md5_password()' - Get an MD5 password. | |
2496 | */ | |
2497 | ||
2498 | static char * /* O - MD5 password string */ | |
2499 | get_md5_password(const char *username, /* I - Username */ | |
2500 | const char *group, /* I - Group */ | |
2501 | char passwd[33]) /* O - MD5 password string */ | |
2502 | { | |
2503 | cups_file_t *fp; /* passwd.md5 file */ | |
2504 | char filename[1024], /* passwd.md5 filename */ | |
2505 | line[256], /* Line from file */ | |
2506 | tempuser[33], /* User from file */ | |
2507 | tempgroup[33]; /* Group from file */ | |
2508 | ||
2509 | ||
2510 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2511 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2512 | username, group ? group : "(null)", passwd); | |
2513 | ||
2514 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2515 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2516 | { | |
2517 | if (errno != ENOENT) | |
2518 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2519 | strerror(errno)); | |
2520 | ||
2521 | return (NULL); | |
2522 | } | |
2523 | ||
2524 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2525 | { | |
2526 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2527 | { | |
2528 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2529 | continue; | |
2530 | } | |
2531 | ||
2532 | if (!strcmp(username, tempuser) && | |
2533 | (group == NULL || !strcmp(group, tempgroup))) | |
2534 | { | |
2535 | /* | |
2536 | * Found the password entry! | |
2537 | */ | |
2538 | ||
2539 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2540 | username, tempgroup); | |
2541 | ||
2542 | cupsFileClose(fp); | |
2543 | return (passwd); | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | /* | |
2548 | * Didn't find a password entry - return NULL! | |
2549 | */ | |
2550 | ||
2551 | cupsFileClose(fp); | |
2552 | return (NULL); | |
2553 | } | |
2554 | ||
2555 | ||
ef416fc2 | 2556 | #if HAVE_LIBPAM |
2557 | /* | |
2558 | * 'pam_func()' - PAM conversation function. | |
2559 | */ | |
2560 | ||
2561 | static int /* O - Success or failure */ | |
2562 | pam_func( | |
2563 | int num_msg, /* I - Number of messages */ | |
2564 | const struct pam_message **msg, /* I - Messages */ | |
2565 | struct pam_response **resp, /* O - Responses */ | |
2566 | void *appdata_ptr) | |
2567 | /* I - Pointer to connection */ | |
2568 | { | |
2569 | int i; /* Looping var */ | |
2570 | struct pam_response *replies; /* Replies */ | |
2571 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2572 | ||
2573 | ||
2574 | /* | |
2575 | * Allocate memory for the responses... | |
2576 | */ | |
2577 | ||
2578 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2579 | return (PAM_CONV_ERR); | |
2580 | ||
2581 | /* | |
2582 | * Answer all of the messages... | |
2583 | */ | |
2584 | ||
2585 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2586 | ||
2587 | #ifdef __hpux | |
2588 | /* | |
2589 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2590 | * module. This is a workaround... | |
2591 | */ | |
2592 | ||
2593 | data = auth_data; | |
2594 | (void)appdata_ptr; | |
2595 | #else | |
2596 | data = (cupsd_authdata_t *)appdata_ptr; | |
2597 | #endif /* __hpux */ | |
2598 | ||
2599 | for (i = 0; i < num_msg; i ++) | |
2600 | { | |
2601 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2602 | ||
2603 | switch (msg[i]->msg_style) | |
2604 | { | |
2605 | case PAM_PROMPT_ECHO_ON: | |
2606 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2607 | data->username)); | |
2608 | replies[i].resp_retcode = PAM_SUCCESS; | |
2609 | replies[i].resp = strdup(data->username); | |
2610 | break; | |
2611 | ||
2612 | case PAM_PROMPT_ECHO_OFF: | |
2613 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2614 | data->password)); | |
2615 | replies[i].resp_retcode = PAM_SUCCESS; | |
2616 | replies[i].resp = strdup(data->password); | |
2617 | break; | |
2618 | ||
2619 | case PAM_TEXT_INFO: | |
2620 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2621 | replies[i].resp_retcode = PAM_SUCCESS; | |
2622 | replies[i].resp = NULL; | |
2623 | break; | |
2624 | ||
2625 | case PAM_ERROR_MSG: | |
2626 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2627 | replies[i].resp_retcode = PAM_SUCCESS; | |
2628 | replies[i].resp = NULL; | |
2629 | break; | |
2630 | ||
2631 | default: | |
2632 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2633 | msg[i]->msg_style)); | |
2634 | free(replies); | |
2635 | return (PAM_CONV_ERR); | |
2636 | } | |
2637 | } | |
2638 | ||
2639 | /* | |
2640 | * Return the responses back to PAM... | |
2641 | */ | |
2642 | ||
2643 | *resp = replies; | |
2644 | ||
2645 | return (PAM_SUCCESS); | |
2646 | } | |
f7deaa1a | 2647 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 2648 | |
2649 | ||
2650 | /* | |
2651 | * 'to64()' - Base64-encode an integer value... | |
2652 | */ | |
2653 | ||
2654 | static void | |
2655 | to64(char *s, /* O - Output string */ | |
2656 | unsigned long v, /* I - Value to encode */ | |
2657 | int n) /* I - Number of digits */ | |
2658 | { | |
2659 | const char *itoa64 = "./0123456789" | |
2660 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2661 | "abcdefghijklmnopqrstuvwxyz"; | |
2662 | ||
2663 | ||
2664 | for (; n > 0; n --, v >>= 6) | |
2665 | *s++ = itoa64[v & 0x3f]; | |
2666 | } | |
2667 | #endif /* HAVE_LIBPAM */ | |
2668 | ||
2669 | ||
2670 | /* | |
db1f069b | 2671 | * End of "$Id: auth.c 6949 2007-09-12 21:33:23Z mike $". |
ef416fc2 | 2672 | */ |