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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. | |
e07d4801 | 30 | * cupsdCopyKrb5Creds() - Get a copy of the Kerberos credentials. |
ef416fc2 | 31 | * cupsdCopyLocation() - Make a copy of a location... |
89d46774 | 32 | * cupsdDeleteAllLocations() - Free all memory used for location |
33 | * authorization. | |
ef416fc2 | 34 | * cupsdFindBest() - Find the location entry that best matches the |
35 | * resource. | |
36 | * cupsdFindLocation() - Find the named location. | |
10d09e33 | 37 | * cupsdFreeLocation() - Free all memory used by a location. |
ef416fc2 | 38 | * cupsdIsAuthorized() - Check to see if the user is authorized... |
10d09e33 | 39 | * cupsdNewLocation() - Create a new location for authorization. |
080811b1 MS |
40 | * check_authref() - Check if an authorization services reference |
41 | * has the supplied right. | |
bd7854cb | 42 | * compare_locations() - Compare two locations. |
10d09e33 | 43 | * copy_authmask() - Copy function for auth masks. |
ef416fc2 | 44 | * cups_crypt() - Encrypt the password using the DES or MD5 |
45 | * algorithms, as needed. | |
10d09e33 | 46 | * free_authmask() - Free function for auth masks. |
e1d6a774 | 47 | * get_md5_password() - Get an MD5 password. |
ef416fc2 | 48 | * pam_func() - PAM conversation function. |
49 | * to64() - Base64-encode an integer value... | |
50 | */ | |
51 | ||
52 | /* | |
53 | * Include necessary headers... | |
54 | */ | |
55 | ||
56 | #include "cupsd.h" | |
57 | #include <grp.h> | |
58 | #ifdef HAVE_SHADOW_H | |
59 | # include <shadow.h> | |
60 | #endif /* HAVE_SHADOW_H */ | |
61 | #ifdef HAVE_CRYPT_H | |
62 | # include <crypt.h> | |
63 | #endif /* HAVE_CRYPT_H */ | |
64 | #if HAVE_LIBPAM | |
65 | # ifdef HAVE_PAM_PAM_APPL_H | |
66 | # include <pam/pam_appl.h> | |
67 | # else | |
68 | # include <security/pam_appl.h> | |
69 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
70 | #endif /* HAVE_LIBPAM */ | |
71 | #ifdef HAVE_USERSEC_H | |
72 | # include <usersec.h> | |
73 | #endif /* HAVE_USERSEC_H */ | |
bd7854cb | 74 | #ifdef HAVE_MEMBERSHIP_H |
75 | # include <membership.h> | |
76 | #endif /* HAVE_MEMBERSHIP_H */ | |
f7deaa1a | 77 | #ifdef HAVE_AUTHORIZATION_H |
78 | # include <Security/AuthorizationTags.h> | |
79 | # ifdef HAVE_SECBASEPRIV_H | |
80 | # include <Security/SecBasePriv.h> | |
81 | # else | |
82 | extern const char *cssmErrorString(int error); | |
83 | # endif /* HAVE_SECBASEPRIV_H */ | |
84 | #endif /* HAVE_AUTHORIZATION_H */ | |
db1f069b MS |
85 | #ifdef HAVE_SYS_PARAM_H |
86 | # include <sys/param.h> | |
87 | #endif /* HAVE_SYS_PARAM_H */ | |
bc44d920 | 88 | #ifdef HAVE_SYS_UCRED_H |
89 | # include <sys/ucred.h> | |
90 | typedef struct xucred cupsd_ucred_t; | |
91 | # define CUPSD_UCRED_UID(c) (c).cr_uid | |
92 | #else | |
93 | typedef struct ucred cupsd_ucred_t; | |
94 | # define CUPSD_UCRED_UID(c) (c).uid | |
95 | #endif /* HAVE_SYS_UCRED_H */ | |
e07d4801 MS |
96 | #ifdef HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID |
97 | /* Not in public headers... */ | |
98 | extern void krb5_ipc_client_set_target_uid(uid_t); | |
99 | extern void krb5_ipc_client_clear_target(void); | |
100 | #endif /* HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID */ | |
ef416fc2 | 101 | |
102 | ||
103 | /* | |
104 | * Local functions... | |
105 | */ | |
106 | ||
f7deaa1a | 107 | #ifdef HAVE_AUTHORIZATION_H |
108 | static int check_authref(cupsd_client_t *con, const char *right); | |
109 | #endif /* HAVE_AUTHORIZATION_H */ | |
bd7854cb | 110 | static int compare_locations(cupsd_location_t *a, |
111 | cupsd_location_t *b); | |
10d09e33 | 112 | static cupsd_authmask_t *copy_authmask(cupsd_authmask_t *am, void *data); |
d09495fa | 113 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 114 | static char *cups_crypt(const char *pw, const char *salt); |
d09495fa | 115 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
10d09e33 | 116 | static void free_authmask(cupsd_authmask_t *am, void *data); |
e1d6a774 | 117 | static char *get_md5_password(const char *username, |
118 | const char *group, char passwd[33]); | |
ef416fc2 | 119 | #if HAVE_LIBPAM |
120 | static int pam_func(int, const struct pam_message **, | |
121 | struct pam_response **, void *); | |
f7deaa1a | 122 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 123 | static void to64(char *s, unsigned long v, int n); |
124 | #endif /* HAVE_LIBPAM */ | |
125 | ||
126 | ||
127 | /* | |
128 | * Local structures... | |
129 | */ | |
130 | ||
131 | #if HAVE_LIBPAM | |
132 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
133 | { | |
134 | char username[33], /* Username string */ | |
135 | password[33]; /* Password string */ | |
136 | } cupsd_authdata_t; | |
137 | #endif /* HAVE_LIBPAM */ | |
138 | ||
139 | ||
140 | /* | |
141 | * Local globals... | |
142 | */ | |
143 | ||
f301802f | 144 | #if defined(__hpux) && HAVE_LIBPAM |
b423cd4c | 145 | static cupsd_authdata_t *auth_data; /* Current client being authenticated */ |
ef416fc2 | 146 | #endif /* __hpux && HAVE_LIBPAM */ |
147 | ||
148 | ||
149 | /* | |
10d09e33 | 150 | * 'cupsdAddIPMask()' - Add an IP address authorization mask. |
ef416fc2 | 151 | */ |
152 | ||
10d09e33 MS |
153 | int /* O - 1 on success, 0 on failure */ |
154 | cupsdAddIPMask( | |
155 | cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
156 | const unsigned address[4], /* I - IP address */ | |
157 | const unsigned netmask[4]) /* I - IP netmask */ | |
ef416fc2 | 158 | { |
10d09e33 | 159 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 160 | |
161 | ||
10d09e33 MS |
162 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
163 | "cupsdAddIPMask(masks=%p(%p), address=%x:%x:%x:%x, " | |
164 | "netmask=%x:%x:%x:%x)", | |
165 | masks, *masks, | |
166 | address[0], address[1], address[2], address[3], | |
167 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 168 | |
10d09e33 MS |
169 | temp.type = CUPSD_AUTH_IP; |
170 | memcpy(temp.mask.ip.address, address, sizeof(temp.mask.ip.address)); | |
171 | memcpy(temp.mask.ip.netmask, netmask, sizeof(temp.mask.ip.netmask)); | |
ef416fc2 | 172 | |
bd7854cb | 173 | /* |
10d09e33 | 174 | * Create the masks array as needed and add... |
bd7854cb | 175 | */ |
176 | ||
10d09e33 MS |
177 | if (!*masks) |
178 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
179 | (cups_acopy_func_t)copy_authmask, | |
180 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 181 | |
10d09e33 MS |
182 | return (cupsArrayAdd(*masks, &temp)); |
183 | } | |
ef416fc2 | 184 | |
bd7854cb | 185 | |
10d09e33 MS |
186 | /* |
187 | * 'cupsdAddLocation()' - Add a location for authorization. | |
188 | */ | |
ef416fc2 | 189 | |
10d09e33 MS |
190 | void |
191 | cupsdAddLocation(cupsd_location_t *loc) /* I - Location to add */ | |
192 | { | |
ef416fc2 | 193 | /* |
10d09e33 | 194 | * Make sure the locations array is created... |
ef416fc2 | 195 | */ |
196 | ||
10d09e33 MS |
197 | if (!Locations) |
198 | Locations = cupsArrayNew3((cups_array_func_t)compare_locations, NULL, | |
199 | (cups_ahash_func_t)NULL, 0, | |
200 | (cups_acopy_func_t)NULL, | |
201 | (cups_afree_func_t)cupsdFreeLocation); | |
202 | ||
203 | if (Locations) | |
204 | { | |
205 | cupsArrayAdd(Locations, loc); | |
206 | ||
207 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: Added location \"%s\"", | |
208 | loc->location ? loc->location : "(null)"); | |
209 | } | |
ef416fc2 | 210 | } |
211 | ||
212 | ||
213 | /* | |
214 | * 'cupsdAddName()' - Add a name to a location... | |
215 | */ | |
216 | ||
217 | void | |
218 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
219 | char *name) /* I - Name to add */ | |
220 | { | |
ef416fc2 | 221 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", |
222 | loc, name); | |
223 | ||
10d09e33 MS |
224 | if (!loc->names) |
225 | loc->names = cupsArrayNew3(NULL, NULL, NULL, 0, | |
226 | (cups_acopy_func_t)_cupsStrAlloc, | |
227 | (cups_afree_func_t)_cupsStrFree); | |
ef416fc2 | 228 | |
10d09e33 | 229 | if (!cupsArrayAdd(loc->names, name)) |
ef416fc2 | 230 | { |
231 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
232 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 233 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 234 | return; |
235 | } | |
ef416fc2 | 236 | } |
237 | ||
238 | ||
239 | /* | |
10d09e33 | 240 | * 'cupsdAddNameMask()' - Add a host or interface name authorization mask. |
ef416fc2 | 241 | */ |
242 | ||
10d09e33 MS |
243 | int /* O - 1 on success, 0 on failure */ |
244 | cupsdAddNameMask(cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
245 | char *name) /* I - Host or interface name */ | |
ef416fc2 | 246 | { |
10d09e33 | 247 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 248 | char ifname[32], /* Interface name */ |
249 | *ifptr; /* Pointer to end of name */ | |
250 | ||
251 | ||
10d09e33 MS |
252 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
253 | "cupsdAddNameMask(masks=%p(%p), name=\"%s\")", | |
254 | masks, *masks, name); | |
ef416fc2 | 255 | |
bd7854cb | 256 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 257 | { |
258 | /* | |
10d09e33 | 259 | * Deny *interface*... |
ef416fc2 | 260 | */ |
261 | ||
10d09e33 MS |
262 | temp.type = CUPSD_AUTH_INTERFACE; |
263 | temp.mask.name.name = (char *)"*"; | |
ef416fc2 | 264 | } |
bd7854cb | 265 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 266 | { |
267 | /* | |
10d09e33 | 268 | * Deny *interface*... |
ef416fc2 | 269 | */ |
270 | ||
271 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
272 | ||
10d09e33 | 273 | ifptr = ifname + strlen(ifname) - 1; |
ef416fc2 | 274 | |
10d09e33 | 275 | if (ifptr >= ifname && *ifptr == ')') |
ef416fc2 | 276 | { |
277 | ifptr --; | |
278 | *ifptr = '\0'; | |
279 | } | |
280 | ||
10d09e33 MS |
281 | temp.type = CUPSD_AUTH_INTERFACE; |
282 | temp.mask.name.name = ifname; | |
ef416fc2 | 283 | } |
284 | else | |
285 | { | |
286 | /* | |
10d09e33 | 287 | * Deny name... |
ef416fc2 | 288 | */ |
289 | ||
10d09e33 MS |
290 | if (*name == '*') |
291 | name ++; | |
ef416fc2 | 292 | |
10d09e33 MS |
293 | temp.type = CUPSD_AUTH_NAME; |
294 | temp.mask.name.name = (char *)name; | |
295 | } | |
ef416fc2 | 296 | |
10d09e33 MS |
297 | /* |
298 | * Set the name length... | |
299 | */ | |
ef416fc2 | 300 | |
10d09e33 | 301 | temp.mask.name.length = strlen(temp.mask.name.name); |
ef416fc2 | 302 | |
10d09e33 MS |
303 | /* |
304 | * Create the masks array as needed and add... | |
305 | */ | |
ef416fc2 | 306 | |
10d09e33 MS |
307 | if (!*masks) |
308 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
309 | (cups_acopy_func_t)copy_authmask, | |
310 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 311 | |
10d09e33 | 312 | return (cupsArrayAdd(*masks, &temp)); |
ef416fc2 | 313 | } |
314 | ||
315 | ||
316 | /* | |
317 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
318 | */ | |
319 | ||
320 | void | |
321 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
322 | { | |
323 | int type; /* Authentication type */ | |
f7deaa1a | 324 | const char *authorization; /* Pointer into Authorization string */ |
325 | char *ptr, /* Pointer into string */ | |
db1f069b | 326 | username[256], /* Username string */ |
ef416fc2 | 327 | password[33]; /* Password string */ |
db0bd74a | 328 | cupsd_cert_t *localuser; /* Certificate username */ |
ef416fc2 | 329 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ |
330 | md5[33], /* MD5 password */ | |
331 | basicmd5[33]; /* MD5 of Basic password */ | |
332 | static const char * const states[] = /* HTTP client states... */ | |
333 | { | |
334 | "WAITING", | |
335 | "OPTIONS", | |
336 | "GET", | |
337 | "GET", | |
338 | "HEAD", | |
339 | "POST", | |
340 | "POST", | |
341 | "POST", | |
342 | "PUT", | |
343 | "PUT", | |
344 | "DELETE", | |
345 | "TRACE", | |
346 | "CLOSE", | |
347 | "STATUS" | |
348 | }; | |
349 | ||
350 | ||
351 | /* | |
352 | * Locate the best matching location so we know what kind of | |
353 | * authentication to expect... | |
354 | */ | |
355 | ||
356 | con->best = cupsdFindBest(con->uri, con->http.state); | |
5bd77a73 | 357 | con->type = CUPSD_AUTH_NONE; |
ef416fc2 | 358 | |
359 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
360 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
361 | con->uri, con->best, con->best ? con->best->location : ""); | |
362 | ||
5bd77a73 | 363 | if (con->best && con->best->type != CUPSD_AUTH_NONE) |
7ff4fea9 | 364 | { |
5bd77a73 | 365 | if (con->best->type == CUPSD_AUTH_DEFAULT) |
7ff4fea9 MS |
366 | type = DefaultAuthType; |
367 | else | |
368 | type = con->best->type; | |
369 | } | |
ef416fc2 | 370 | else |
371 | type = DefaultAuthType; | |
372 | ||
373 | /* | |
374 | * Decode the Authorization string... | |
375 | */ | |
376 | ||
f7deaa1a | 377 | authorization = httpGetField(&con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 378 | |
379 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
380 | authorization); | |
381 | ||
382 | username[0] = '\0'; | |
383 | password[0] = '\0'; | |
384 | ||
f7deaa1a | 385 | #ifdef HAVE_AUTHORIZATION_H |
386 | if (con->authref) | |
387 | { | |
388 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
389 | con->authref = NULL; | |
390 | } | |
391 | #endif /* HAVE_AUTHORIZATION_H */ | |
392 | ||
2fb76298 | 393 | if (!*authorization) |
ef416fc2 | 394 | { |
395 | /* | |
396 | * No authorization data provided, return early... | |
397 | */ | |
398 | ||
399 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
400 | "cupsdAuthorize: No authentication data provided."); | |
401 | return; | |
402 | } | |
f7deaa1a | 403 | #ifdef HAVE_AUTHORIZATION_H |
c8fef167 | 404 | else if (!strncmp(authorization, "AuthRef ", 8) && |
f7deaa1a | 405 | !strcasecmp(con->http.hostname, "localhost")) |
406 | { | |
407 | OSStatus status; /* Status */ | |
408 | int authlen; /* Auth string length */ | |
409 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
410 | ||
411 | /* | |
412 | * Get the Authorization Services data... | |
413 | */ | |
414 | ||
c8fef167 | 415 | authorization += 8; |
f7deaa1a | 416 | while (isspace(*authorization & 255)) |
417 | authorization ++; | |
418 | ||
419 | authlen = sizeof(nonce); | |
420 | httpDecode64_2(nonce, &authlen, authorization); | |
421 | ||
422 | if (authlen != kAuthorizationExternalFormLength) | |
423 | { | |
424 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 425 | "External Authorization reference size is incorrect!"); |
f7deaa1a | 426 | return; |
427 | } | |
428 | ||
429 | if ((status = AuthorizationCreateFromExternalForm( | |
430 | (AuthorizationExternalForm *)nonce, &con->authref)) != 0) | |
431 | { | |
432 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
bc44d920 | 433 | "AuthorizationCreateFromExternalForm returned %d (%s)", |
f7deaa1a | 434 | (int)status, cssmErrorString(status)); |
435 | return; | |
436 | } | |
437 | ||
c8fef167 | 438 | username[0] = '\0'; |
ed6e7faf | 439 | |
c8fef167 | 440 | if (!AuthorizationCopyInfo(con->authref, kAuthorizationEnvironmentUsername, |
bf3816c7 | 441 | &authinfo)) |
e4572d57 | 442 | { |
ed6e7faf MS |
443 | if (authinfo->count == 1 && authinfo->items[0].value && |
444 | authinfo->items[0].valueLength >= 2) | |
c8fef167 | 445 | { |
ed6e7faf MS |
446 | strlcpy(username, authinfo->items[0].value, sizeof(username)); |
447 | ||
c8fef167 MS |
448 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
449 | "cupsdAuthorize: Authorized as \"%s\" using AuthRef", | |
450 | username); | |
451 | } | |
452 | ||
e4572d57 | 453 | AuthorizationFreeItemSet(authinfo); |
e4572d57 | 454 | } |
355e94dc | 455 | |
c8fef167 MS |
456 | if (!username[0]) |
457 | { | |
458 | /* | |
459 | * No username in AuthRef, grab username using peer credentials... | |
460 | */ | |
461 | ||
462 | struct passwd *pwd; /* Password entry for this user */ | |
463 | cupsd_ucred_t peercred; /* Peer credentials */ | |
464 | socklen_t peersize; /* Size of peer credentials */ | |
465 | ||
466 | peersize = sizeof(peercred); | |
467 | ||
468 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
469 | { | |
470 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
471 | strerror(errno)); | |
472 | return; | |
473 | } | |
474 | ||
475 | if ((pwd = getpwuid(CUPSD_UCRED_UID(peercred))) == NULL) | |
476 | { | |
477 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
478 | "Unable to find UID %d for peer credentials.", | |
479 | (int)CUPSD_UCRED_UID(peercred)); | |
480 | return; | |
481 | } | |
482 | ||
483 | strlcpy(username, pwd->pw_name, sizeof(username)); | |
484 | ||
485 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
486 | "cupsdAuthorize: Authorized as \"%s\" using " | |
487 | "AuthRef + PeerCred", username); | |
488 | } | |
489 | ||
5bd77a73 | 490 | con->type = CUPSD_AUTH_BASIC; |
f7deaa1a | 491 | } |
492 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 493 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
494 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
495 | con->http.hostaddr->addr.sa_family == AF_LOCAL) | |
496 | { | |
497 | /* | |
498 | * Use peer credentials from domain socket connection... | |
499 | */ | |
500 | ||
501 | struct passwd *pwd; /* Password entry for this user */ | |
502 | cupsd_ucred_t peercred; /* Peer credentials */ | |
503 | socklen_t peersize; /* Size of peer credentials */ | |
504 | ||
505 | ||
506 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
507 | { | |
508 | cupsdLogMessage(CUPSD_LOG_ERROR, "User \"%s\" does not exist!", | |
509 | authorization + 9); | |
510 | return; | |
511 | } | |
512 | ||
513 | peersize = sizeof(peercred); | |
514 | ||
f11a948a MS |
515 | # ifdef __APPLE__ |
516 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
517 | # else | |
bc44d920 | 518 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) |
f11a948a | 519 | # endif /* __APPLE__ */ |
bc44d920 | 520 | { |
521 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
522 | strerror(errno)); | |
523 | return; | |
524 | } | |
525 | ||
526 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
527 | { | |
528 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
529 | "Invalid peer credentials for \"%s\" - got %d, " | |
530 | "expected %d!", authorization + 9, | |
531 | CUPSD_UCRED_UID(peercred), pwd->pw_uid); | |
532 | # ifdef HAVE_SYS_UCRED_H | |
533 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_version=%d", | |
534 | peercred.cr_version); | |
535 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_uid=%d", | |
536 | peercred.cr_uid); | |
537 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_ngroups=%d", | |
538 | peercred.cr_ngroups); | |
539 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: cr_groups[0]=%d", | |
540 | peercred.cr_groups[0]); | |
541 | # endif /* HAVE_SYS_UCRED_H */ | |
542 | return; | |
543 | } | |
544 | ||
545 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc MS |
546 | |
547 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
548 | "cupsdAuthorize: Authorized as %s using PeerCred", | |
549 | username); | |
2fb76298 | 550 | |
5bd77a73 | 551 | con->type = CUPSD_AUTH_BASIC; |
bc44d920 | 552 | } |
553 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 554 | else if (!strncmp(authorization, "Local", 5) && |
555 | !strcasecmp(con->http.hostname, "localhost")) | |
556 | { | |
557 | /* | |
558 | * Get Local certificate authentication data... | |
559 | */ | |
560 | ||
561 | authorization += 5; | |
80ca4592 | 562 | while (isspace(*authorization & 255)) |
ef416fc2 | 563 | authorization ++; |
564 | ||
565 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
355e94dc | 566 | { |
db0bd74a | 567 | strlcpy(username, localuser->username, sizeof(username)); |
355e94dc MS |
568 | |
569 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
570 | "cupsdAuthorize: Authorized as %s using Local", | |
571 | username); | |
572 | } | |
ef416fc2 | 573 | else |
574 | { | |
575 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
576 | "cupsdAuthorize: Local authentication certificate not " | |
577 | "found!"); | |
578 | return; | |
579 | } | |
2fb76298 | 580 | |
db0bd74a MS |
581 | #ifdef HAVE_GSSAPI |
582 | if (localuser->ccache) | |
583 | con->type = CUPSD_AUTH_NEGOTIATE; | |
584 | else | |
585 | #endif /* HAVE_GSSAPI */ | |
586 | con->type = CUPSD_AUTH_BASIC; | |
ef416fc2 | 587 | } |
2fb76298 | 588 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 589 | { |
590 | /* | |
591 | * Get the Basic authentication data... | |
592 | */ | |
593 | ||
594 | int userlen; /* Username:password length */ | |
595 | ||
596 | ||
597 | authorization += 5; | |
80ca4592 | 598 | while (isspace(*authorization & 255)) |
ef416fc2 | 599 | authorization ++; |
600 | ||
601 | userlen = sizeof(username); | |
602 | httpDecode64_2(username, &userlen, authorization); | |
603 | ||
604 | /* | |
605 | * Pull the username and password out... | |
606 | */ | |
607 | ||
608 | if ((ptr = strchr(username, ':')) == NULL) | |
609 | { | |
610 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
611 | "cupsdAuthorize: Missing Basic password!"); | |
612 | return; | |
613 | } | |
614 | ||
615 | *ptr++ = '\0'; | |
616 | ||
617 | if (!username[0]) | |
618 | { | |
619 | /* | |
620 | * Username must not be empty... | |
621 | */ | |
622 | ||
623 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
624 | "cupsdAuthorize: Empty Basic username!"); | |
625 | return; | |
626 | } | |
627 | ||
628 | if (!*ptr) | |
629 | { | |
630 | /* | |
631 | * Password must not be empty... | |
632 | */ | |
633 | ||
634 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
635 | "cupsdAuthorize: Empty Basic password!"); | |
636 | return; | |
637 | } | |
638 | ||
639 | strlcpy(password, ptr, sizeof(password)); | |
640 | ||
641 | /* | |
642 | * Validate the username and password... | |
643 | */ | |
644 | ||
645 | switch (type) | |
646 | { | |
2fb76298 | 647 | default : |
5bd77a73 | 648 | case CUPSD_AUTH_BASIC : |
ef416fc2 | 649 | { |
650 | #if HAVE_LIBPAM | |
651 | /* | |
652 | * Only use PAM to do authentication. This supports MD5 | |
653 | * passwords, among other things... | |
654 | */ | |
655 | ||
656 | pam_handle_t *pamh; /* PAM authentication handle */ | |
657 | int pamerr; /* PAM error code */ | |
658 | struct pam_conv pamdata;/* PAM conversation data */ | |
659 | cupsd_authdata_t data; /* Authentication data */ | |
660 | ||
661 | ||
662 | strlcpy(data.username, username, sizeof(data.username)); | |
663 | strlcpy(data.password, password, sizeof(data.password)); | |
664 | ||
07725fee | 665 | # if defined(__sun) || defined(__hpux) |
e1d6a774 | 666 | pamdata.conv = (int (*)(int, struct pam_message **, |
667 | struct pam_response **, | |
668 | void *))pam_func; | |
669 | # else | |
ef416fc2 | 670 | pamdata.conv = pam_func; |
07725fee | 671 | # endif /* __sun || __hpux */ |
ef416fc2 | 672 | pamdata.appdata_ptr = &data; |
673 | ||
674 | # ifdef __hpux | |
675 | /* | |
676 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
677 | * more info... | |
678 | */ | |
679 | ||
680 | auth_data = &data; | |
681 | # endif /* __hpux */ | |
682 | ||
683 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
684 | if (pamerr != PAM_SUCCESS) | |
685 | { | |
686 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
75bd9771 | 687 | "cupsdAuthorize: pam_start() returned %d (%s)!", |
ef416fc2 | 688 | pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 689 | return; |
690 | } | |
691 | ||
ee571f26 MS |
692 | # ifdef HAVE_PAM_SET_ITEM |
693 | # ifdef PAM_RHOST | |
a4924f6c MS |
694 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http.hostname); |
695 | if (pamerr != PAM_SUCCESS) | |
696 | cupsdLogMessage(CUPSD_LOG_WARN, | |
ee571f26 MS |
697 | "cupsdAuthorize: pam_set_item(PAM_RHOST) " |
698 | "returned %d (%s)!", pamerr, | |
699 | pam_strerror(pamh, pamerr)); | |
700 | # endif /* PAM_RHOST */ | |
701 | ||
702 | # ifdef PAM_TTY | |
703 | pamerr = pam_set_item(pamh, PAM_TTY, "cups"); | |
704 | if (pamerr != PAM_SUCCESS) | |
705 | cupsdLogMessage(CUPSD_LOG_WARN, | |
706 | "cupsdAuthorize: pam_set_item(PAM_TTY) " | |
707 | "returned %d (%s)!", pamerr, | |
708 | pam_strerror(pamh, pamerr)); | |
709 | # endif /* PAM_TTY */ | |
710 | # endif /* HAVE_PAM_SET_ITEM */ | |
711 | ||
ef416fc2 | 712 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
713 | if (pamerr != PAM_SUCCESS) | |
714 | { | |
715 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
716 | "cupsdAuthorize: pam_authenticate() returned %d " | |
75bd9771 | 717 | "(%s)!", |
ef416fc2 | 718 | pamerr, pam_strerror(pamh, pamerr)); |
719 | pam_end(pamh, 0); | |
720 | return; | |
721 | } | |
722 | ||
94da7e34 MS |
723 | # ifdef HAVE_PAM_SETCRED |
724 | pamerr = pam_setcred(pamh, PAM_ESTABLISH_CRED | PAM_SILENT); | |
725 | if (pamerr != PAM_SUCCESS) | |
726 | cupsdLogMessage(CUPSD_LOG_WARN, | |
727 | "cupsdAuthorize: pam_setcred() " | |
728 | "returned %d (%s)!", pamerr, | |
729 | pam_strerror(pamh, pamerr)); | |
730 | # endif /* HAVE_PAM_SETCRED */ | |
731 | ||
ef416fc2 | 732 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); |
733 | if (pamerr != PAM_SUCCESS) | |
734 | { | |
735 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
736 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
75bd9771 | 737 | "(%s)!", |
ef416fc2 | 738 | pamerr, pam_strerror(pamh, pamerr)); |
739 | pam_end(pamh, 0); | |
740 | return; | |
741 | } | |
742 | ||
743 | pam_end(pamh, PAM_SUCCESS); | |
744 | ||
745 | #elif defined(HAVE_USERSEC_H) | |
746 | /* | |
747 | * Use AIX authentication interface... | |
748 | */ | |
749 | ||
750 | char *authmsg; /* Authentication message */ | |
ef416fc2 | 751 | int reenter; /* ??? */ |
752 | ||
753 | ||
754 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
75bd9771 MS |
755 | "cupsdAuthorize: AIX authenticate of username " |
756 | "\"%s\"", username); | |
ef416fc2 | 757 | |
758 | reenter = 1; | |
759 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
760 | { | |
761 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
762 | "cupsdAuthorize: Unable to authenticate username " | |
763 | "\"%s\": %s", | |
764 | username, strerror(errno)); | |
765 | return; | |
766 | } | |
767 | ||
768 | #else | |
769 | /* | |
770 | * Use normal UNIX password file-based authentication... | |
771 | */ | |
772 | ||
773 | char *pass; /* Encrypted password */ | |
774 | struct passwd *pw; /* User password data */ | |
775 | # ifdef HAVE_SHADOW_H | |
776 | struct spwd *spw; /* Shadow password data */ | |
777 | # endif /* HAVE_SHADOW_H */ | |
778 | ||
779 | ||
780 | pw = getpwnam(username); /* Get the current password */ | |
781 | endpwent(); /* Close the password file */ | |
782 | ||
783 | if (!pw) | |
784 | { | |
785 | /* | |
786 | * No such user... | |
787 | */ | |
788 | ||
789 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
790 | "cupsdAuthorize: Unknown username \"%s\"!", | |
791 | username); | |
80ca4592 | 792 | return; |
ef416fc2 | 793 | } |
794 | ||
795 | # ifdef HAVE_SHADOW_H | |
796 | spw = getspnam(username); | |
797 | endspent(); | |
798 | ||
799 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
800 | { | |
801 | /* | |
802 | * Don't allow blank passwords! | |
803 | */ | |
804 | ||
805 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
806 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
807 | "password!", username); | |
808 | return; | |
809 | } | |
810 | ||
811 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
812 | # else | |
813 | if (!pw->pw_passwd[0]) | |
814 | # endif /* HAVE_SHADOW_H */ | |
815 | { | |
816 | /* | |
817 | * Don't allow blank passwords! | |
818 | */ | |
819 | ||
820 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
821 | "cupsdAuthorize: Username \"%s\" has no password!", | |
822 | username); | |
823 | return; | |
824 | } | |
825 | ||
826 | /* | |
827 | * OK, the password isn't blank, so compare with what came from the | |
828 | * client... | |
829 | */ | |
830 | ||
831 | pass = cups_crypt(password, pw->pw_passwd); | |
832 | ||
833 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
834 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
835 | pw->pw_passwd, pass); | |
836 | ||
837 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
838 | { | |
839 | # ifdef HAVE_SHADOW_H | |
840 | if (spw) | |
841 | { | |
842 | pass = cups_crypt(password, spw->sp_pwdp); | |
843 | ||
844 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
845 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
846 | spw->sp_pwdp, pass); | |
847 | ||
848 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
849 | { | |
850 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
851 | "cupsdAuthorize: Authentication failed for " | |
852 | "user \"%s\"!", | |
853 | username); | |
854 | return; | |
855 | } | |
856 | } | |
857 | else | |
858 | # endif /* HAVE_SHADOW_H */ | |
859 | { | |
860 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
861 | "cupsdAuthorize: Authentication failed for " | |
862 | "user \"%s\"!", | |
863 | username); | |
864 | return; | |
865 | } | |
866 | } | |
867 | #endif /* HAVE_LIBPAM */ | |
868 | } | |
355e94dc MS |
869 | |
870 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
871 | "cupsdAuthorize: Authorized as %s using Basic", | |
872 | username); | |
ef416fc2 | 873 | break; |
874 | ||
5bd77a73 | 875 | case CUPSD_AUTH_BASICDIGEST : |
ef416fc2 | 876 | /* |
877 | * Do Basic authentication with the Digest password file... | |
878 | */ | |
879 | ||
e1d6a774 | 880 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 881 | { |
882 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
883 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
884 | username); | |
885 | return; | |
886 | } | |
887 | ||
888 | httpMD5(username, "CUPS", password, basicmd5); | |
889 | ||
890 | if (strcmp(md5, basicmd5)) | |
891 | { | |
892 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
893 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
894 | username); | |
895 | return; | |
896 | } | |
355e94dc MS |
897 | |
898 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
899 | "cupsdAuthorize: Authorized as %s using BasicDigest", | |
900 | username); | |
ef416fc2 | 901 | break; |
902 | } | |
2fb76298 MS |
903 | |
904 | con->type = type; | |
ef416fc2 | 905 | } |
2fb76298 | 906 | else if (!strncmp(authorization, "Digest", 6)) |
ef416fc2 | 907 | { |
908 | /* | |
909 | * Get the username, password, and nonce from the Digest attributes... | |
910 | */ | |
911 | ||
912 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
913 | username, sizeof(username)) || !username[0]) | |
914 | { | |
915 | /* | |
916 | * Username must not be empty... | |
917 | */ | |
918 | ||
919 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
920 | "cupsdAuthorize: Empty or missing Digest username!"); | |
921 | return; | |
922 | } | |
923 | ||
924 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
925 | password, sizeof(password)) || !password[0]) | |
926 | { | |
927 | /* | |
928 | * Password must not be empty... | |
929 | */ | |
930 | ||
931 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
932 | "cupsdAuthorize: Empty or missing Digest password!"); | |
933 | return; | |
934 | } | |
935 | ||
936 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
937 | nonce)) | |
938 | { | |
939 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
940 | "cupsdAuthorize: No nonce value for Digest " | |
941 | "authentication!"); | |
942 | return; | |
943 | } | |
944 | ||
945 | if (strcmp(con->http.hostname, nonce)) | |
946 | { | |
947 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
948 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
949 | "got \"%s\"!", con->http.hostname, nonce); | |
950 | return; | |
951 | } | |
952 | ||
953 | /* | |
954 | * Validate the username and password... | |
955 | */ | |
956 | ||
e1d6a774 | 957 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 958 | { |
959 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
960 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
961 | username); | |
962 | return; | |
963 | } | |
964 | ||
965 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
966 | ||
967 | if (strcmp(md5, password)) | |
968 | { | |
969 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
970 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
971 | username); | |
972 | return; | |
973 | } | |
355e94dc MS |
974 | |
975 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
976 | "cupsdAuthorize: Authorized as %s using Digest", | |
977 | username); | |
2fb76298 | 978 | |
5bd77a73 | 979 | con->type = CUPSD_AUTH_DIGEST; |
ef416fc2 | 980 | } |
f7deaa1a | 981 | #ifdef HAVE_GSSAPI |
c7017ecc MS |
982 | # ifdef HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID |
983 | else if (con->http.hostaddr->addr.sa_family == AF_LOCAL && | |
c8fef167 | 984 | !strncmp(authorization, "Negotiate", 9)) |
c7017ecc MS |
985 | { |
986 | /* | |
987 | * Pull the credentials directly from the user... | |
988 | */ | |
989 | ||
990 | krb5_error_code error; /* Kerberos error code */ | |
991 | cupsd_ucred_t peercred; /* Peer credentials */ | |
992 | socklen_t peersize; /* Size of peer credentials */ | |
993 | krb5_ccache peerccache; /* Peer Kerberos credentials */ | |
c8fef167 MS |
994 | krb5_principal peerprncpl; /* Peer's default principal */ |
995 | char *peername; /* Peer username */ | |
c7017ecc MS |
996 | |
997 | peersize = sizeof(peercred); | |
998 | ||
999 | # ifdef __APPLE__ | |
1000 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
1001 | # else | |
1002 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) | |
1003 | # endif /* __APPLE__ */ | |
1004 | { | |
1005 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
1006 | strerror(errno)); | |
1007 | return; | |
1008 | } | |
1009 | ||
1010 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1011 | "cupsdAuthorize: Copying credentials for UID %d...", | |
1012 | CUPSD_UCRED_UID(peercred)); | |
1013 | ||
7cf5915e MS |
1014 | if (!KerberosInitialized) |
1015 | { | |
1016 | /* | |
1017 | * Setup a Kerberos context for the scheduler to use... | |
1018 | */ | |
1019 | ||
1020 | KerberosInitialized = 1; | |
1021 | ||
1022 | if (krb5_init_context(&KerberosContext)) | |
1023 | { | |
1024 | KerberosContext = NULL; | |
1025 | ||
1026 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1027 | "Unable to initialize Kerberos context"); | |
1028 | return; | |
1029 | } | |
1030 | } | |
1031 | ||
c7017ecc MS |
1032 | krb5_ipc_client_set_target_uid(CUPSD_UCRED_UID(peercred)); |
1033 | ||
1034 | if ((error = krb5_cc_default(KerberosContext, &peerccache)) != 0) | |
1035 | { | |
1036 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1037 | "Unable to get credentials cache for UID %d (%d/%s)", | |
1038 | (int)CUPSD_UCRED_UID(peercred), error, strerror(errno)); | |
c8fef167 | 1039 | krb5_ipc_client_clear_target(); |
c7017ecc MS |
1040 | return; |
1041 | } | |
1042 | ||
c8fef167 MS |
1043 | if ((error = krb5_cc_get_principal(KerberosContext, peerccache, |
1044 | &peerprncpl)) != 0) | |
c7017ecc | 1045 | { |
c8fef167 MS |
1046 | cupsdLogMessage(CUPSD_LOG_ERROR, |
1047 | "Unable to get Kerberos principal for UID %d", | |
1048 | (int)CUPSD_UCRED_UID(peercred)); | |
1049 | krb5_cc_close(KerberosContext, peerccache); | |
1050 | krb5_ipc_client_clear_target(); | |
1051 | return; | |
c7017ecc | 1052 | } |
c8fef167 MS |
1053 | |
1054 | if ((error = krb5_unparse_name(KerberosContext, peerprncpl, | |
1055 | &peername)) != 0) | |
1056 | { | |
c7017ecc MS |
1057 | cupsdLogMessage(CUPSD_LOG_ERROR, |
1058 | "Unable to get Kerberos name for UID %d", | |
1059 | (int)CUPSD_UCRED_UID(peercred)); | |
c8fef167 MS |
1060 | krb5_cc_close(KerberosContext, peerccache); |
1061 | krb5_ipc_client_clear_target(); | |
1062 | return; | |
1063 | } | |
1064 | ||
1065 | strlcpy(username, peername, sizeof(username)); | |
1066 | ||
1067 | con->have_gss = 1; | |
1068 | con->type = CUPSD_AUTH_NEGOTIATE; | |
1069 | ||
1070 | free(peername); | |
1071 | ||
1072 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1073 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1074 | username); | |
c7017ecc MS |
1075 | |
1076 | krb5_cc_close(KerberosContext, peerccache); | |
1077 | krb5_ipc_client_clear_target(); | |
1078 | } | |
1079 | # endif /* HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID */ | |
c8fef167 | 1080 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 1081 | { |
1082 | int len; /* Length of authorization string */ | |
f7deaa1a | 1083 | gss_ctx_id_t context; /* Authorization context */ |
1084 | OM_uint32 major_status, /* Major status code */ | |
1085 | minor_status; /* Minor status code */ | |
1086 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
1087 | /* Input token from string */ | |
1088 | output_token = GSS_C_EMPTY_BUFFER; | |
1089 | /* Output token for username */ | |
1090 | gss_name_t client_name; /* Client name */ | |
1091 | ||
1092 | ||
f42414bf | 1093 | # ifdef __APPLE__ |
1094 | /* | |
1095 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
1096 | * to use it... | |
1097 | */ | |
1098 | ||
1099 | if (gss_init_sec_context == NULL) | |
1100 | { | |
1101 | cupsdLogMessage(CUPSD_LOG_WARN, | |
1102 | "GSSAPI/Kerberos authentication failed because the " | |
1103 | "Kerberos framework is not present."); | |
1104 | return; | |
1105 | } | |
1106 | # endif /* __APPLE__ */ | |
1107 | ||
f7deaa1a | 1108 | con->gss_output_token.length = 0; |
1109 | ||
1110 | /* | |
1111 | * Find the start of the Kerberos input token... | |
1112 | */ | |
1113 | ||
1114 | authorization += 9; | |
1115 | while (isspace(*authorization & 255)) | |
1116 | authorization ++; | |
1117 | ||
1118 | if (!*authorization) | |
1119 | { | |
1120 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
c7017ecc | 1121 | "cupsdAuthorize: No authentication data specified."); |
f7deaa1a | 1122 | return; |
1123 | } | |
1124 | ||
f7deaa1a | 1125 | /* |
1126 | * Decode the authorization string to get the input token... | |
1127 | */ | |
1128 | ||
1129 | len = strlen(authorization); | |
1130 | input_token.value = malloc(len); | |
1131 | input_token.value = httpDecode64_2(input_token.value, &len, | |
c7017ecc | 1132 | authorization); |
f7deaa1a | 1133 | input_token.length = len; |
1134 | ||
1135 | /* | |
1136 | * Accept the input token to get the authorization info... | |
1137 | */ | |
1138 | ||
1139 | context = GSS_C_NO_CONTEXT; | |
1140 | client_name = GSS_C_NO_NAME; | |
1141 | major_status = gss_accept_sec_context(&minor_status, | |
1142 | &context, | |
c8fef167 | 1143 | GSS_C_NO_CREDENTIAL, |
f7deaa1a | 1144 | &input_token, |
1145 | GSS_C_NO_CHANNEL_BINDINGS, | |
1146 | &client_name, | |
1147 | NULL, | |
1148 | &con->gss_output_token, | |
e07d4801 | 1149 | &con->gss_flags, |
f7deaa1a | 1150 | NULL, |
e07d4801 | 1151 | &con->gss_creds); |
f7deaa1a | 1152 | |
1153 | if (GSS_ERROR(major_status)) | |
1154 | { | |
1155 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
c7017ecc | 1156 | "cupsdAuthorize: Error accepting GSSAPI security " |
f7deaa1a | 1157 | "context"); |
1158 | ||
1159 | if (context != GSS_C_NO_CONTEXT) | |
1160 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1161 | return; |
1162 | } | |
1163 | ||
97c9a8d7 MS |
1164 | con->have_gss = 1; |
1165 | ||
76cd9e37 MS |
1166 | /* |
1167 | * Get the username associated with the client's credentials... | |
f7deaa1a | 1168 | */ |
1169 | ||
e07d4801 | 1170 | if (!con->gss_creds) |
355e94dc | 1171 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
c7017ecc | 1172 | "cupsdAuthorize: No delegated credentials!"); |
355e94dc MS |
1173 | |
1174 | if (major_status == GSS_S_CONTINUE_NEEDED) | |
1175 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
e07d4801 | 1176 | "cupsdAuthorize: Credentials not complete"); |
355e94dc | 1177 | else if (major_status == GSS_S_COMPLETE) |
f7deaa1a | 1178 | { |
c8fef167 | 1179 | major_status = gss_display_name(&minor_status, client_name, |
f7deaa1a | 1180 | &output_token, NULL); |
1181 | ||
1182 | if (GSS_ERROR(major_status)) | |
1183 | { | |
1184 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, | |
c7017ecc | 1185 | "cupsdAuthorize: Error getting username"); |
e07d4801 | 1186 | gss_release_cred(&minor_status, &con->gss_creds); |
f7deaa1a | 1187 | gss_release_name(&minor_status, &client_name); |
1188 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1189 | return; |
1190 | } | |
1191 | ||
f7deaa1a | 1192 | strlcpy(username, output_token.value, sizeof(username)); |
355e94dc MS |
1193 | |
1194 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1195 | "cupsdAuthorize: Authorized as %s using Negotiate", | |
1196 | username); | |
f7deaa1a | 1197 | |
e07d4801 | 1198 | gss_release_name(&minor_status, &client_name); |
f7deaa1a | 1199 | gss_release_buffer(&minor_status, &output_token); |
2fb76298 | 1200 | |
5bd77a73 | 1201 | con->type = CUPSD_AUTH_NEGOTIATE; |
f7deaa1a | 1202 | } |
1203 | else | |
e07d4801 MS |
1204 | gss_release_cred(&minor_status, &con->gss_creds); |
1205 | ||
1206 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 1207 | } |
1208 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 1209 | else |
ef416fc2 | 1210 | { |
355e94dc | 1211 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
1212 | |
1213 | ||
1214 | if (sscanf(authorization, "%255s", scheme) != 1) | |
1215 | strcpy(scheme, "UNKNOWN"); | |
1216 | ||
2fb76298 MS |
1217 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\"", |
1218 | scheme); | |
ef416fc2 | 1219 | return; |
1220 | } | |
1221 | ||
1222 | /* | |
1223 | * If we get here, then we were able to validate the username and | |
1224 | * password - copy the validated username and password to the client | |
1225 | * data and return... | |
1226 | */ | |
1227 | ||
1228 | strlcpy(con->username, username, sizeof(con->username)); | |
1229 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 1230 | } |
1231 | ||
1232 | ||
080811b1 MS |
1233 | /* |
1234 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
1235 | * access a location. | |
1236 | */ | |
1237 | ||
1238 | int /* O - 1 if allowed, 0 otherwise */ | |
1239 | cupsdCheckAccess( | |
1240 | unsigned ip[4], /* I - Client address */ | |
1241 | char *name, /* I - Client hostname */ | |
1242 | int namelen, /* I - Length of hostname */ | |
1243 | cupsd_location_t *loc) /* I - Location to check */ | |
1244 | { | |
1245 | int allow; /* 1 if allowed, 0 otherwise */ | |
1246 | ||
1247 | ||
1248 | if (!strcasecmp(name, "localhost")) | |
1249 | { | |
1250 | /* | |
1251 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
1252 | */ | |
1253 | ||
1254 | return (1); | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | /* | |
1259 | * Do authorization checks on the domain/address... | |
1260 | */ | |
1261 | ||
1262 | switch (loc->order_type) | |
1263 | { | |
1264 | default : | |
1265 | allow = 0; /* anti-compiler-warning-code */ | |
1266 | break; | |
1267 | ||
5bd77a73 | 1268 | case CUPSD_AUTH_ALLOW : /* Order Deny,Allow */ |
080811b1 MS |
1269 | allow = 1; |
1270 | ||
10d09e33 | 1271 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
1272 | allow = 0; |
1273 | ||
10d09e33 | 1274 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
1275 | allow = 1; |
1276 | break; | |
1277 | ||
5bd77a73 | 1278 | case CUPSD_AUTH_DENY : /* Order Allow,Deny */ |
080811b1 MS |
1279 | allow = 0; |
1280 | ||
10d09e33 | 1281 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
1282 | allow = 1; |
1283 | ||
10d09e33 | 1284 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
1285 | allow = 0; |
1286 | break; | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | return (allow); | |
1291 | } | |
1292 | ||
1293 | ||
ef416fc2 | 1294 | /* |
1295 | * 'cupsdCheckAuth()' - Check authorization masks. | |
1296 | */ | |
1297 | ||
1298 | int /* O - 1 if mask matches, 0 otherwise */ | |
10d09e33 MS |
1299 | cupsdCheckAuth(unsigned ip[4], /* I - Client address */ |
1300 | char *name, /* I - Client hostname */ | |
1301 | int name_len, /* I - Length of hostname */ | |
1302 | cups_array_t *masks) /* I - Masks */ | |
ef416fc2 | 1303 | { |
10d09e33 MS |
1304 | int i; /* Looping var */ |
1305 | cupsd_authmask_t *mask; /* Current mask */ | |
1306 | cupsd_netif_t *iface; /* Network interface */ | |
1307 | unsigned netip4; /* IPv4 network address */ | |
ef416fc2 | 1308 | #ifdef AF_INET6 |
10d09e33 | 1309 | unsigned netip6[4]; /* IPv6 network address */ |
ef416fc2 | 1310 | #endif /* AF_INET6 */ |
1311 | ||
e07d4801 | 1312 | |
10d09e33 MS |
1313 | for (mask = (cupsd_authmask_t *)cupsArrayFirst(masks); |
1314 | mask; | |
1315 | mask = (cupsd_authmask_t *)cupsArrayNext(masks)) | |
ef416fc2 | 1316 | { |
10d09e33 | 1317 | switch (mask->type) |
ef416fc2 | 1318 | { |
5bd77a73 | 1319 | case CUPSD_AUTH_INTERFACE : |
ef416fc2 | 1320 | /* |
1321 | * Check for a match with a network interface... | |
1322 | */ | |
1323 | ||
1324 | netip4 = htonl(ip[3]); | |
1325 | ||
1326 | #ifdef AF_INET6 | |
1327 | netip6[0] = htonl(ip[0]); | |
1328 | netip6[1] = htonl(ip[1]); | |
1329 | netip6[2] = htonl(ip[2]); | |
1330 | netip6[3] = htonl(ip[3]); | |
1331 | #endif /* AF_INET6 */ | |
1332 | ||
10d09e33 | 1333 | if (!strcmp(mask->mask.name.name, "*")) |
ef416fc2 | 1334 | { |
e07d4801 MS |
1335 | #ifdef __APPLE__ |
1336 | /* | |
1337 | * Allow Back-to-My-Mac addresses... | |
1338 | */ | |
1339 | ||
1340 | if ((ip[0] & 0xff000000) == 0xfd000000) | |
1341 | return (1); | |
1342 | #endif /* __APPLE__ */ | |
1343 | ||
ef416fc2 | 1344 | /* |
1345 | * Check against all local interfaces... | |
1346 | */ | |
1347 | ||
1348 | cupsdNetIFUpdate(); | |
1349 | ||
e00b005a | 1350 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1351 | iface; | |
1352 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1353 | { |
1354 | /* | |
1355 | * Only check local interfaces... | |
1356 | */ | |
1357 | ||
1358 | if (!iface->is_local) | |
1359 | continue; | |
1360 | ||
1361 | if (iface->address.addr.sa_family == AF_INET) | |
1362 | { | |
1363 | /* | |
1364 | * Check IPv4 address... | |
1365 | */ | |
1366 | ||
1367 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1368 | (iface->address.ipv4.sin_addr.s_addr & | |
1369 | iface->mask.ipv4.sin_addr.s_addr)) | |
1370 | return (1); | |
1371 | } | |
1372 | #ifdef AF_INET6 | |
1373 | else | |
1374 | { | |
1375 | /* | |
1376 | * Check IPv6 address... | |
1377 | */ | |
1378 | ||
1379 | for (i = 0; i < 4; i ++) | |
1380 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1381 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1382 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1383 | break; | |
1384 | ||
1385 | if (i == 4) | |
1386 | return (1); | |
1387 | } | |
1388 | #endif /* AF_INET6 */ | |
1389 | } | |
1390 | } | |
1391 | else | |
1392 | { | |
1393 | /* | |
1394 | * Check the named interface... | |
1395 | */ | |
1396 | ||
e00b005a | 1397 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1398 | iface; |
e00b005a | 1399 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1400 | { |
10d09e33 | 1401 | if (strcmp(mask->mask.name.name, iface->name)) |
ed486911 | 1402 | continue; |
1403 | ||
ef416fc2 | 1404 | if (iface->address.addr.sa_family == AF_INET) |
1405 | { | |
1406 | /* | |
1407 | * Check IPv4 address... | |
1408 | */ | |
1409 | ||
1410 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1411 | (iface->address.ipv4.sin_addr.s_addr & | |
1412 | iface->mask.ipv4.sin_addr.s_addr)) | |
1413 | return (1); | |
1414 | } | |
1415 | #ifdef AF_INET6 | |
1416 | else | |
1417 | { | |
1418 | /* | |
1419 | * Check IPv6 address... | |
1420 | */ | |
1421 | ||
1422 | for (i = 0; i < 4; i ++) | |
1423 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1424 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1425 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1426 | break; | |
1427 | ||
1428 | if (i == 4) | |
1429 | return (1); | |
1430 | } | |
1431 | #endif /* AF_INET6 */ | |
1432 | } | |
1433 | } | |
1434 | break; | |
1435 | ||
5bd77a73 | 1436 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1437 | /* |
1438 | * Check for exact name match... | |
1439 | */ | |
1440 | ||
10d09e33 | 1441 | if (!strcasecmp(name, mask->mask.name.name)) |
ef416fc2 | 1442 | return (1); |
1443 | ||
1444 | /* | |
1445 | * Check for domain match... | |
1446 | */ | |
1447 | ||
10d09e33 MS |
1448 | if (name_len >= mask->mask.name.length && |
1449 | mask->mask.name.name[0] == '.' && | |
1450 | !strcasecmp(name + name_len - mask->mask.name.length, | |
1451 | mask->mask.name.name)) | |
ef416fc2 | 1452 | return (1); |
1453 | break; | |
1454 | ||
5bd77a73 | 1455 | case CUPSD_AUTH_IP : |
ef416fc2 | 1456 | /* |
1457 | * Check for IP/network address match... | |
1458 | */ | |
1459 | ||
1460 | for (i = 0; i < 4; i ++) | |
10d09e33 MS |
1461 | if ((ip[i] & mask->mask.ip.netmask[i]) != |
1462 | mask->mask.ip.address[i]) | |
ef416fc2 | 1463 | break; |
1464 | ||
1465 | if (i == 4) | |
1466 | return (1); | |
1467 | break; | |
1468 | } | |
ef416fc2 | 1469 | } |
1470 | ||
1471 | return (0); | |
1472 | } | |
1473 | ||
1474 | ||
1475 | /* | |
1476 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1477 | */ | |
1478 | ||
1479 | int /* O - 1 if user is a member, 0 otherwise */ | |
1480 | cupsdCheckGroup( | |
1481 | const char *username, /* I - User name */ | |
1482 | struct passwd *user, /* I - System user info */ | |
1483 | const char *groupname) /* I - Group name */ | |
1484 | { | |
8922323b MS |
1485 | int i; /* Looping var */ |
1486 | struct group *group; /* System group info */ | |
1487 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 1488 | #ifdef HAVE_MBR_UID_TO_UUID |
8922323b MS |
1489 | uuid_t useruuid, /* UUID for username */ |
1490 | groupuuid; /* UUID for groupname */ | |
1491 | int is_member; /* True if user is a member of group */ | |
bd7854cb | 1492 | #endif /* HAVE_MBR_UID_TO_UUID */ |
ef416fc2 | 1493 | |
1494 | ||
1495 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1496 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
1497 | username, user, groupname); | |
1498 | ||
1499 | /* | |
1500 | * Validate input... | |
1501 | */ | |
1502 | ||
1503 | if (!username || !groupname) | |
1504 | return (0); | |
1505 | ||
1506 | /* | |
1507 | * Check to see if the user is a member of the named group... | |
1508 | */ | |
1509 | ||
1510 | group = getgrnam(groupname); | |
1511 | endgrent(); | |
1512 | ||
1513 | if (group != NULL) | |
1514 | { | |
1515 | /* | |
1516 | * Group exists, check it... | |
1517 | */ | |
1518 | ||
1519 | for (i = 0; group->gr_mem[i]; i ++) | |
1520 | if (!strcasecmp(username, group->gr_mem[i])) | |
1521 | return (1); | |
1522 | } | |
1523 | ||
1524 | /* | |
1525 | * Group doesn't exist or user not in group list, check the group ID | |
1526 | * against the user's group ID... | |
1527 | */ | |
1528 | ||
1529 | if (user && group && group->gr_gid == user->pw_gid) | |
1530 | return (1); | |
1531 | ||
bd7854cb | 1532 | #ifdef HAVE_MBR_UID_TO_UUID |
1533 | /* | |
1534 | * Check group membership through MacOS X membership API... | |
1535 | */ | |
1536 | ||
dd1abb6b | 1537 | if (user && !mbr_uid_to_uuid(user->pw_uid, useruuid)) |
c9fc04c6 | 1538 | { |
8922323b MS |
1539 | if (group) |
1540 | { | |
1541 | /* | |
1542 | * Map group name to UUID and check membership... | |
1543 | */ | |
c9fc04c6 | 1544 | |
8922323b MS |
1545 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) |
1546 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1547 | if (is_member) | |
1548 | return (1); | |
1549 | } | |
1550 | else if (groupname[0] == '#') | |
1551 | { | |
1552 | /* | |
1553 | * Use UUID directly and check for equality (user UUID) and | |
1554 | * membership (group UUID)... | |
1555 | */ | |
1556 | ||
1557 | if (!uuid_parse((char *)groupname + 1, groupuuid)) | |
1558 | { | |
1559 | if (!uuid_compare(useruuid, groupuuid)) | |
c9fc04c6 | 1560 | return (1); |
8922323b MS |
1561 | else if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1562 | if (is_member) | |
1563 | return (1); | |
1564 | } | |
1565 | ||
1566 | return (0); | |
1567 | } | |
1568 | } | |
1569 | else if (groupname[0] == '#') | |
1570 | return (0); | |
bd7854cb | 1571 | #endif /* HAVE_MBR_UID_TO_UUID */ |
1572 | ||
ef416fc2 | 1573 | /* |
1574 | * Username not found, group not found, or user is not part of the | |
1575 | * system group... Check for a user and group in the MD5 password | |
1576 | * file... | |
1577 | */ | |
1578 | ||
e1d6a774 | 1579 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1580 | return (1); |
1581 | ||
1582 | /* | |
1583 | * If we get this far, then the user isn't part of the named group... | |
1584 | */ | |
1585 | ||
1586 | return (0); | |
1587 | } | |
1588 | ||
1589 | ||
e07d4801 MS |
1590 | #ifdef HAVE_GSSAPI |
1591 | /* | |
1592 | * 'cupsdCopyKrb5Creds()' - Get a copy of the Kerberos credentials. | |
1593 | */ | |
1594 | ||
1595 | krb5_ccache /* O - Credentials or NULL */ | |
1596 | cupsdCopyKrb5Creds(cupsd_client_t *con) /* I - Client connection */ | |
1597 | { | |
1598 | # if !defined(HAVE_KRB5_CC_NEW_UNIQUE) && !defined(HAVE_HEIMDAL) | |
1599 | cupsdLogMessage(CUPSD_LOG_INFO, | |
1600 | "Sorry, your version of Kerberos does not support delegated " | |
1601 | "credentials!"); | |
1602 | return (NULL); | |
1603 | ||
1604 | # else | |
1605 | krb5_ccache ccache = NULL; /* Credentials */ | |
1606 | krb5_error_code error; /* Kerberos error code */ | |
1607 | OM_uint32 major_status, /* Major status code */ | |
1608 | minor_status; /* Minor status code */ | |
1609 | krb5_principal principal; /* Kerberos principal */ | |
1610 | ||
1611 | ||
1612 | # ifdef __APPLE__ | |
1613 | /* | |
1614 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
1615 | * to use it... | |
1616 | */ | |
1617 | ||
1618 | if (krb5_init_context == NULL) | |
1619 | return (NULL); | |
1620 | # endif /* __APPLE__ */ | |
1621 | ||
1622 | if (!KerberosInitialized) | |
1623 | { | |
1624 | /* | |
1625 | * Setup a Kerberos context for the scheduler to use... | |
1626 | */ | |
1627 | ||
1628 | KerberosInitialized = 1; | |
1629 | ||
1630 | if (krb5_init_context(&KerberosContext)) | |
1631 | { | |
1632 | KerberosContext = NULL; | |
1633 | ||
1634 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to initialize Kerberos context"); | |
1635 | return (NULL); | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | /* | |
1640 | * We MUST create a file-based cache because memory-based caches are | |
1641 | * only valid for the current process/address space. | |
1642 | * | |
1643 | * Due to various bugs/features in different versions of Kerberos, we | |
1644 | * need either the krb5_cc_new_unique() function or Heimdal's version | |
1645 | * of krb5_cc_gen_new() to create a new FILE: credential cache that | |
1646 | * can be passed to the backend. These functions create a temporary | |
1647 | * file (typically in /tmp) containing the cached credentials, which | |
1648 | * are removed when we have successfully printed a job. | |
1649 | */ | |
1650 | ||
1651 | # ifdef HAVE_KRB5_CC_NEW_UNIQUE | |
1652 | if ((error = krb5_cc_new_unique(KerberosContext, "FILE", NULL, &ccache)) != 0) | |
1653 | # else /* HAVE_HEIMDAL */ | |
1654 | if ((error = krb5_cc_gen_new(KerberosContext, &krb5_fcc_ops, &ccache)) != 0) | |
1655 | # endif /* HAVE_KRB5_CC_NEW_UNIQUE */ | |
1656 | { | |
1657 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1658 | "Unable to create new credentials cache (%d/%s)", | |
1659 | error, strerror(errno)); | |
1660 | return (NULL); | |
1661 | } | |
1662 | ||
1663 | if ((error = krb5_parse_name(KerberosContext, con->username, &principal)) != 0) | |
1664 | { | |
1665 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1666 | "Unable to parse kerberos username (%d/%s)", error, | |
1667 | strerror(errno)); | |
1668 | krb5_cc_destroy(KerberosContext, ccache); | |
1669 | return (NULL); | |
1670 | } | |
1671 | ||
1672 | if ((error = krb5_cc_initialize(KerberosContext, ccache, principal))) | |
1673 | { | |
1674 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1675 | "Unable to initialize credentials cache (%d/%s)", error, | |
1676 | strerror(errno)); | |
1677 | krb5_cc_destroy(KerberosContext, ccache); | |
1678 | krb5_free_principal(KerberosContext, principal); | |
1679 | return (NULL); | |
1680 | } | |
1681 | ||
1682 | krb5_free_principal(KerberosContext, principal); | |
1683 | ||
1684 | /* | |
1685 | * Copy the user's credentials to the new cache file... | |
1686 | */ | |
1687 | ||
1688 | # ifdef HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID | |
1689 | if (con->http.hostaddr->addr.sa_family == AF_LOCAL && | |
1690 | !(con->gss_flags & GSS_C_DELEG_FLAG)) | |
1691 | { | |
1692 | /* | |
1693 | * Pull the credentials directly from the user... | |
1694 | */ | |
1695 | ||
1696 | cupsd_ucred_t peercred; /* Peer credentials */ | |
1697 | socklen_t peersize; /* Size of peer credentials */ | |
1698 | krb5_ccache peerccache; /* Peer Kerberos credentials */ | |
1699 | ||
1700 | peersize = sizeof(peercred); | |
1701 | ||
68b10830 MS |
1702 | # ifdef __APPLE__ |
1703 | if (getsockopt(con->http.fd, 0, LOCAL_PEERCRED, &peercred, &peersize)) | |
1704 | # else | |
e07d4801 | 1705 | if (getsockopt(con->http.fd, SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) |
68b10830 | 1706 | # endif /* __APPLE__ */ |
e07d4801 MS |
1707 | { |
1708 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", | |
1709 | strerror(errno)); | |
1710 | krb5_cc_destroy(KerberosContext, ccache); | |
1711 | return (NULL); | |
1712 | } | |
1713 | ||
68b10830 MS |
1714 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
1715 | "cupsdCopyKrb5Creds: Copying credentials for UID %d...", | |
1716 | CUPSD_UCRED_UID(peercred)); | |
1717 | ||
e07d4801 MS |
1718 | krb5_ipc_client_set_target_uid(CUPSD_UCRED_UID(peercred)); |
1719 | ||
1720 | if ((error = krb5_cc_default(KerberosContext, &peerccache)) != 0) | |
1721 | { | |
1722 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1723 | "Unable to get credentials cache for UID %d (%d/%s)", | |
1724 | (int)CUPSD_UCRED_UID(peercred), error, strerror(errno)); | |
1725 | krb5_cc_destroy(KerberosContext, ccache); | |
1726 | return (NULL); | |
1727 | } | |
1728 | ||
1729 | error = krb5_cc_copy_creds(KerberosContext, peerccache, ccache); | |
1730 | krb5_cc_close(KerberosContext, peerccache); | |
1731 | krb5_ipc_client_clear_target(); | |
1732 | ||
1733 | if (error) | |
1734 | { | |
1735 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1736 | "Unable to copy credentials cache for UID %d (%d/%s)", | |
1737 | (int)CUPSD_UCRED_UID(peercred), error, strerror(errno)); | |
1738 | krb5_cc_destroy(KerberosContext, ccache); | |
1739 | return (NULL); | |
1740 | } | |
1741 | } | |
1742 | else | |
1743 | # endif /* HAVE_KRB5_IPC_CLIENT_SET_TARGET_UID */ | |
1744 | { | |
1745 | major_status = gss_krb5_copy_ccache(&minor_status, con->gss_creds, ccache); | |
1746 | ||
1747 | if (GSS_ERROR(major_status)) | |
1748 | { | |
1749 | cupsdLogGSSMessage(CUPSD_LOG_ERROR, major_status, minor_status, | |
1750 | "Unable to copy client credentials cache"); | |
1751 | krb5_cc_destroy(KerberosContext, ccache); | |
1752 | return (NULL); | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | return (ccache); | |
1757 | # endif /* !HAVE_KRB5_CC_NEW_UNIQUE && !HAVE_HEIMDAL */ | |
1758 | } | |
1759 | #endif /* HAVE_GSSAPI */ | |
1760 | ||
1761 | ||
ef416fc2 | 1762 | /* |
1763 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1764 | */ | |
1765 | ||
1766 | cupsd_location_t * /* O - New location */ | |
1767 | cupsdCopyLocation( | |
10d09e33 | 1768 | cupsd_location_t *loc) /* I - Original location */ |
ef416fc2 | 1769 | { |
ef416fc2 | 1770 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 1771 | |
1772 | ||
ef416fc2 | 1773 | /* |
10d09e33 | 1774 | * Make a copy of the original location... |
ef416fc2 | 1775 | */ |
1776 | ||
10d09e33 | 1777 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 1778 | return (NULL); |
1779 | ||
ef416fc2 | 1780 | /* |
1781 | * Copy the information from the original location to the new one. | |
1782 | */ | |
1783 | ||
10d09e33 MS |
1784 | if (!loc) |
1785 | return (temp); | |
ef416fc2 | 1786 | |
10d09e33 MS |
1787 | if (loc->location) |
1788 | temp->location = _cupsStrAlloc(loc->location); | |
ef416fc2 | 1789 | |
10d09e33 MS |
1790 | temp->limit = loc->limit; |
1791 | temp->order_type = loc->order_type; | |
1792 | temp->type = loc->type; | |
1793 | temp->level = loc->level; | |
1794 | temp->satisfy = loc->satisfy; | |
1795 | temp->encryption = loc->encryption; | |
1796 | ||
1797 | if (loc->names) | |
1798 | { | |
1799 | if ((temp->names = cupsArrayDup(loc->names)) == NULL) | |
ef416fc2 | 1800 | { |
1801 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1802 | "Unable to allocate memory for %d names: %s", |
1803 | cupsArrayCount(loc->names), strerror(errno)); | |
bd7854cb | 1804 | |
10d09e33 | 1805 | cupsdFreeLocation(temp); |
ef416fc2 | 1806 | return (NULL); |
1807 | } | |
ef416fc2 | 1808 | } |
1809 | ||
10d09e33 | 1810 | if (loc->allow) |
ef416fc2 | 1811 | { |
1812 | /* | |
1813 | * Copy allow rules... | |
1814 | */ | |
1815 | ||
10d09e33 | 1816 | if ((temp->allow = cupsArrayDup(loc->allow)) == NULL) |
ef416fc2 | 1817 | { |
1818 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1819 | "Unable to allocate memory for %d allow rules: %s", |
1820 | cupsArrayCount(loc->allow), strerror(errno)); | |
1821 | cupsdFreeLocation(temp); | |
ef416fc2 | 1822 | return (NULL); |
1823 | } | |
ef416fc2 | 1824 | } |
1825 | ||
10d09e33 | 1826 | if (loc->deny) |
ef416fc2 | 1827 | { |
1828 | /* | |
1829 | * Copy deny rules... | |
1830 | */ | |
1831 | ||
10d09e33 | 1832 | if ((temp->deny = cupsArrayDup(loc->deny)) == NULL) |
ef416fc2 | 1833 | { |
1834 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1835 | "Unable to allocate memory for %d deny rules: %s", |
1836 | cupsArrayCount(loc->deny), strerror(errno)); | |
1837 | cupsdFreeLocation(temp); | |
ef416fc2 | 1838 | return (NULL); |
1839 | } | |
ef416fc2 | 1840 | } |
1841 | ||
1842 | return (temp); | |
1843 | } | |
1844 | ||
1845 | ||
1846 | /* | |
1847 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1848 | */ | |
1849 | ||
1850 | void | |
1851 | cupsdDeleteAllLocations(void) | |
1852 | { | |
ef416fc2 | 1853 | /* |
10d09e33 | 1854 | * Free the location array, which will free all of the locations... |
ef416fc2 | 1855 | */ |
1856 | ||
bd7854cb | 1857 | cupsArrayDelete(Locations); |
1858 | Locations = NULL; | |
ef416fc2 | 1859 | } |
1860 | ||
1861 | ||
ef416fc2 | 1862 | /* |
1863 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1864 | */ | |
1865 | ||
1866 | cupsd_location_t * /* O - Location that matches */ | |
1867 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1868 | http_state_t state) /* I - HTTP state/request */ | |
1869 | { | |
ef416fc2 | 1870 | char uri[HTTP_MAX_URI], |
1871 | /* URI in request... */ | |
1872 | *uriptr; /* Pointer into URI */ | |
1873 | cupsd_location_t *loc, /* Current location */ | |
1874 | *best; /* Best match for location so far */ | |
1875 | int bestlen; /* Length of best match */ | |
1876 | int limit; /* Limit field */ | |
5bd77a73 | 1877 | static const int limits[] = /* Map http_status_t to CUPSD_AUTH_LIMIT_xyz */ |
ef416fc2 | 1878 | { |
5bd77a73 MS |
1879 | CUPSD_AUTH_LIMIT_ALL, |
1880 | CUPSD_AUTH_LIMIT_OPTIONS, | |
1881 | CUPSD_AUTH_LIMIT_GET, | |
1882 | CUPSD_AUTH_LIMIT_GET, | |
1883 | CUPSD_AUTH_LIMIT_HEAD, | |
1884 | CUPSD_AUTH_LIMIT_POST, | |
1885 | CUPSD_AUTH_LIMIT_POST, | |
1886 | CUPSD_AUTH_LIMIT_POST, | |
1887 | CUPSD_AUTH_LIMIT_PUT, | |
1888 | CUPSD_AUTH_LIMIT_PUT, | |
1889 | CUPSD_AUTH_LIMIT_DELETE, | |
1890 | CUPSD_AUTH_LIMIT_TRACE, | |
1891 | CUPSD_AUTH_LIMIT_ALL, | |
1892 | CUPSD_AUTH_LIMIT_ALL | |
ef416fc2 | 1893 | }; |
1894 | ||
1895 | ||
1896 | /* | |
1897 | * First copy the connection URI to a local string so we have drop | |
1898 | * any .ppd extension from the pathname in /printers or /classes | |
1899 | * URIs... | |
1900 | */ | |
1901 | ||
1902 | strlcpy(uri, path, sizeof(uri)); | |
1903 | ||
1904 | if (!strncmp(uri, "/printers/", 10) || | |
1905 | !strncmp(uri, "/classes/", 9)) | |
1906 | { | |
1907 | /* | |
1908 | * Check if the URI has .ppd on the end... | |
1909 | */ | |
1910 | ||
1911 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1912 | ||
1913 | if (!strcmp(uriptr, ".ppd")) | |
1914 | *uriptr = '\0'; | |
1915 | } | |
1916 | ||
1917 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1918 | ||
1919 | /* | |
1920 | * Loop through the list of locations to find a match... | |
1921 | */ | |
1922 | ||
1923 | limit = limits[state]; | |
1924 | best = NULL; | |
1925 | bestlen = 0; | |
1926 | ||
bd7854cb | 1927 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1928 | loc; | |
1929 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1930 | { |
1931 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1932 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1933 | |
1934 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1935 | { | |
1936 | /* | |
1937 | * Use case-insensitive comparison for queue names... | |
1938 | */ | |
1939 | ||
e1d6a774 | 1940 | if (loc->length > bestlen && loc->location && |
bd7854cb | 1941 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1942 | loc->location[0] == '/' && |
1943 | (limit & loc->limit) != 0) | |
1944 | { | |
1945 | best = loc; | |
1946 | bestlen = loc->length; | |
1947 | } | |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | /* | |
1952 | * Use case-sensitive comparison for other URIs... | |
1953 | */ | |
1954 | ||
e1d6a774 | 1955 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1956 | !strncmp(uri, loc->location, loc->length) && |
1957 | loc->location[0] == '/' && | |
1958 | (limit & loc->limit) != 0) | |
1959 | { | |
1960 | best = loc; | |
1961 | bestlen = loc->length; | |
1962 | } | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | /* | |
1967 | * Return the match, if any... | |
1968 | */ | |
1969 | ||
1970 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1971 | best ? best->location : "NONE"); | |
1972 | ||
1973 | return (best); | |
1974 | } | |
1975 | ||
1976 | ||
1977 | /* | |
1978 | * 'cupsdFindLocation()' - Find the named location. | |
1979 | */ | |
1980 | ||
1981 | cupsd_location_t * /* O - Location that matches */ | |
1982 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1983 | { | |
bd7854cb | 1984 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1985 | |
1986 | ||
bd7854cb | 1987 | key.location = (char *)location; |
ef416fc2 | 1988 | |
bd7854cb | 1989 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1990 | } |
1991 | ||
1992 | ||
10d09e33 MS |
1993 | /* |
1994 | * 'cupsdFreeLocation()' - Free all memory used by a location. | |
1995 | */ | |
1996 | ||
1997 | void | |
1998 | cupsdFreeLocation(cupsd_location_t *loc)/* I - Location to free */ | |
1999 | { | |
2000 | cupsArrayDelete(loc->names); | |
2001 | cupsArrayDelete(loc->allow); | |
2002 | cupsArrayDelete(loc->deny); | |
2003 | ||
2004 | _cupsStrFree(loc->location); | |
2005 | free(loc); | |
2006 | } | |
2007 | ||
2008 | ||
ef416fc2 | 2009 | /* |
2010 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
2011 | */ | |
2012 | ||
2013 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
2014 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
2015 | const char *owner)/* I - Owner of object */ | |
2016 | { | |
10d09e33 | 2017 | int i, /* Looping vars */ |
2fb76298 MS |
2018 | auth, /* Authorization status */ |
2019 | type; /* Type of authentication */ | |
ef416fc2 | 2020 | unsigned address[4]; /* Authorization address */ |
2021 | cupsd_location_t *best; /* Best match for location so far */ | |
2022 | int hostlen; /* Length of hostname */ | |
10d09e33 MS |
2023 | char *name, /* Current username */ |
2024 | username[256], /* Username to authorize */ | |
db1f069b MS |
2025 | ownername[256], /* Owner name to authorize */ |
2026 | *ptr; /* Pointer into username */ | |
ef416fc2 | 2027 | struct passwd *pw; /* User password data */ |
2028 | static const char * const levels[] = /* Auth levels */ | |
2029 | { | |
2030 | "ANON", | |
2031 | "USER", | |
2032 | "GROUP" | |
2033 | }; | |
2034 | static const char * const types[] = /* Auth types */ | |
2035 | { | |
2fb76298 MS |
2036 | "None", |
2037 | "Basic", | |
2038 | "Digest", | |
2039 | "BasicDigest", | |
2040 | "Negotiate" | |
ef416fc2 | 2041 | }; |
2042 | ||
2043 | ||
2044 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2045 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
f301802f | 2046 | con->uri, con->best, con->best ? con->best->location ? |
2047 | con->best->location : "(null)" : ""); | |
fa73b229 | 2048 | if (owner) |
2049 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2050 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 2051 | |
2052 | /* | |
2053 | * If there is no "best" authentication rule for this request, then | |
2054 | * access is allowed from the local system and denied from other | |
2055 | * addresses... | |
2056 | */ | |
2057 | ||
2058 | if (!con->best) | |
2059 | { | |
2060 | if (!strcmp(con->http.hostname, "localhost") || | |
2061 | !strcmp(con->http.hostname, ServerName)) | |
2062 | return (HTTP_OK); | |
2063 | else | |
2064 | return (HTTP_FORBIDDEN); | |
2065 | } | |
2066 | ||
2067 | best = con->best; | |
2068 | ||
5bd77a73 | 2069 | if ((type = best->type) == CUPSD_AUTH_DEFAULT) |
2fb76298 MS |
2070 | type = DefaultAuthType; |
2071 | ||
ef416fc2 | 2072 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
5bd77a73 MS |
2073 | "cupsdIsAuthorized: level=CUPSD_AUTH_%s, type=%s, " |
2074 | "satisfy=CUPSD_AUTH_SATISFY_%s, num_names=%d", | |
2fb76298 | 2075 | levels[best->level], types[type], |
10d09e33 | 2076 | best->satisfy ? "ANY" : "ALL", cupsArrayCount(best->names)); |
ef416fc2 | 2077 | |
5bd77a73 | 2078 | if (best->limit == CUPSD_AUTH_LIMIT_IPP) |
ef416fc2 | 2079 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", |
2080 | best->op, ippOpString(best->op)); | |
2081 | ||
2082 | /* | |
2083 | * Check host/ip-based accesses... | |
2084 | */ | |
2085 | ||
2086 | #ifdef AF_INET6 | |
2087 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
2088 | { | |
2089 | /* | |
2090 | * Copy IPv6 address... | |
2091 | */ | |
2092 | ||
2093 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
2094 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
2095 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
2096 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
2097 | } | |
2098 | else | |
2099 | #endif /* AF_INET6 */ | |
2100 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
2101 | { | |
2102 | /* | |
2103 | * Copy IPv4 address... | |
2104 | */ | |
2105 | ||
2106 | address[0] = 0; | |
2107 | address[1] = 0; | |
2108 | address[2] = 0; | |
2109 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
2110 | } | |
2111 | else | |
2112 | memset(address, 0, sizeof(address)); | |
2113 | ||
2114 | hostlen = strlen(con->http.hostname); | |
2115 | ||
080811b1 | 2116 | auth = cupsdCheckAccess(address, con->http.hostname, hostlen, best) |
5bd77a73 | 2117 | ? CUPSD_AUTH_ALLOW : CUPSD_AUTH_DENY; |
ef416fc2 | 2118 | |
5bd77a73 | 2119 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=CUPSD_AUTH_%s...", |
ef416fc2 | 2120 | auth ? "DENY" : "ALLOW"); |
2121 | ||
5bd77a73 | 2122 | if (auth == CUPSD_AUTH_DENY && best->satisfy == CUPSD_AUTH_SATISFY_ALL) |
ef416fc2 | 2123 | return (HTTP_FORBIDDEN); |
2124 | ||
2125 | #ifdef HAVE_SSL | |
2126 | /* | |
2127 | * See if encryption is required... | |
2128 | */ | |
2129 | ||
f7deaa1a | 2130 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
a74454a7 | 2131 | strcasecmp(con->http.hostname, "localhost") && |
5bd77a73 | 2132 | best->satisfy == CUPSD_AUTH_SATISFY_ALL) && |
c8fef167 | 2133 | !(type == CUPSD_AUTH_NEGOTIATE || |
5bd77a73 | 2134 | (type == CUPSD_AUTH_NONE && DefaultAuthType == CUPSD_AUTH_NEGOTIATE))) |
ef416fc2 | 2135 | { |
355e94dc | 2136 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2137 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
2138 | return (HTTP_UPGRADE_REQUIRED); | |
2139 | } | |
2140 | #endif /* HAVE_SSL */ | |
2141 | ||
2142 | /* | |
2143 | * Now see what access level is required... | |
2144 | */ | |
2145 | ||
5bd77a73 | 2146 | if (best->level == CUPSD_AUTH_ANON || /* Anonymous access - allow it */ |
10d09e33 | 2147 | (type == CUPSD_AUTH_NONE && cupsArrayCount(best->names) == 0)) |
ef416fc2 | 2148 | return (HTTP_OK); |
2149 | ||
5bd77a73 MS |
2150 | if (!con->username[0] && type == CUPSD_AUTH_NONE && |
2151 | best->limit == CUPSD_AUTH_LIMIT_IPP) | |
ef416fc2 | 2152 | { |
2153 | /* | |
2154 | * Check for unauthenticated username... | |
2155 | */ | |
2156 | ||
2157 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
2158 | ||
2159 | ||
2160 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
2161 | if (attr) | |
2162 | { | |
355e94dc | 2163 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2164 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
2165 | attr->values[0].string.text); | |
db1f069b | 2166 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 2167 | } |
5bd77a73 | 2168 | else if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
ef416fc2 | 2169 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2170 | else | |
2171 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2172 | } | |
fa73b229 | 2173 | else |
2174 | { | |
355e94dc | 2175 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 2176 | con->username); |
2177 | ||
f7deaa1a | 2178 | #ifdef HAVE_AUTHORIZATION_H |
2179 | if (!con->username[0] && !con->authref) | |
2180 | #else | |
fa73b229 | 2181 | if (!con->username[0]) |
f7deaa1a | 2182 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 2183 | { |
5bd77a73 | 2184 | if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
fa73b229 | 2185 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
2186 | else | |
2187 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
2188 | } | |
2189 | ||
5bd77a73 MS |
2190 | if (con->type != type && type != CUPSD_AUTH_NONE && |
2191 | (con->type != CUPSD_AUTH_BASIC || type != CUPSD_AUTH_BASICDIGEST)) | |
2fb76298 MS |
2192 | { |
2193 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s!", | |
2194 | types[con->type], types[type]); | |
2195 | ||
2196 | return (HTTP_UNAUTHORIZED); | |
2197 | } | |
2198 | ||
db1f069b | 2199 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 2200 | } |
ef416fc2 | 2201 | |
2202 | /* | |
fa73b229 | 2203 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 2204 | * access... (root always matches) |
2205 | */ | |
2206 | ||
fa73b229 | 2207 | if (!strcmp(username, "root")) |
ef416fc2 | 2208 | return (HTTP_OK); |
2209 | ||
db1f069b MS |
2210 | /* |
2211 | * Strip any @domain or @KDC from the username and owner... | |
2212 | */ | |
2213 | ||
2214 | if ((ptr = strchr(username, '@')) != NULL) | |
2215 | *ptr = '\0'; | |
2216 | ||
2217 | if (owner) | |
2218 | { | |
2219 | strlcpy(ownername, owner, sizeof(ownername)); | |
2220 | ||
2221 | if ((ptr = strchr(ownername, '@')) != NULL) | |
2222 | *ptr = '\0'; | |
2223 | } | |
2224 | else | |
2225 | ownername[0] = '\0'; | |
2226 | ||
ef416fc2 | 2227 | /* |
2228 | * Get the user info... | |
2229 | */ | |
2230 | ||
f7deaa1a | 2231 | if (username[0]) |
2232 | { | |
2233 | pw = getpwnam(username); | |
2234 | endpwent(); | |
2235 | } | |
2236 | else | |
2237 | pw = NULL; | |
ef416fc2 | 2238 | |
5bd77a73 | 2239 | if (best->level == CUPSD_AUTH_USER) |
ef416fc2 | 2240 | { |
2241 | /* | |
2242 | * If there are no names associated with this location, then | |
2243 | * any valid user is OK... | |
2244 | */ | |
2245 | ||
10d09e33 | 2246 | if (cupsArrayCount(best->names) == 0) |
ef416fc2 | 2247 | return (HTTP_OK); |
2248 | ||
2249 | /* | |
2250 | * Otherwise check the user list and return OK if this user is | |
2251 | * allowed... | |
2252 | */ | |
2253 | ||
2254 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2255 | "cupsdIsAuthorized: Checking user membership..."); | |
2256 | ||
f7deaa1a | 2257 | #ifdef HAVE_AUTHORIZATION_H |
2258 | /* | |
2259 | * If an authorization reference was supplied it must match a right name... | |
2260 | */ | |
2261 | ||
2262 | if (con->authref) | |
2263 | { | |
10d09e33 MS |
2264 | for (name = (char *)cupsArrayFirst(best->names); |
2265 | name; | |
2266 | name = (char *)cupsArrayNext(best->names)) | |
f7deaa1a | 2267 | { |
10d09e33 | 2268 | if (!strncasecmp(name, "@AUTHKEY(", 9) && check_authref(con, name + 9)) |
f7deaa1a | 2269 | return (HTTP_OK); |
10d09e33 | 2270 | else if (!strcasecmp(name, "@SYSTEM") && SystemGroupAuthKey && |
f7deaa1a | 2271 | check_authref(con, SystemGroupAuthKey)) |
2272 | return (HTTP_OK); | |
2273 | } | |
2274 | ||
ee571f26 | 2275 | return (HTTP_FORBIDDEN); |
f7deaa1a | 2276 | } |
2277 | #endif /* HAVE_AUTHORIZATION_H */ | |
2278 | ||
10d09e33 MS |
2279 | for (name = (char *)cupsArrayFirst(best->names); |
2280 | name; | |
2281 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 2282 | { |
10d09e33 | 2283 | if (!strcasecmp(name, "@OWNER") && owner && |
db1f069b | 2284 | !strcasecmp(username, ownername)) |
ef416fc2 | 2285 | return (HTTP_OK); |
10d09e33 | 2286 | else if (!strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 2287 | { |
10d09e33 MS |
2288 | for (i = 0; i < NumSystemGroups; i ++) |
2289 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 2290 | return (HTTP_OK); |
2291 | } | |
10d09e33 | 2292 | else if (name[0] == '@') |
ef416fc2 | 2293 | { |
10d09e33 | 2294 | if (cupsdCheckGroup(username, pw, name + 1)) |
ef416fc2 | 2295 | return (HTTP_OK); |
2296 | } | |
10d09e33 | 2297 | else if (!strcasecmp(username, name)) |
ef416fc2 | 2298 | return (HTTP_OK); |
2299 | } | |
2300 | ||
ee571f26 | 2301 | return (HTTP_FORBIDDEN); |
ef416fc2 | 2302 | } |
2303 | ||
2304 | /* | |
2305 | * Check to see if this user is in any of the named groups... | |
2306 | */ | |
2307 | ||
2308 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2309 | "cupsdIsAuthorized: Checking group membership..."); | |
2310 | ||
2311 | /* | |
2312 | * Check to see if this user is in any of the named groups... | |
2313 | */ | |
2314 | ||
10d09e33 MS |
2315 | for (name = (char *)cupsArrayFirst(best->names); |
2316 | name; | |
2317 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 2318 | { |
2319 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2320 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
10d09e33 | 2321 | name); |
ef416fc2 | 2322 | |
10d09e33 | 2323 | if (!strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 2324 | { |
10d09e33 MS |
2325 | for (i = 0; i < NumSystemGroups; i ++) |
2326 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 2327 | return (HTTP_OK); |
2328 | } | |
10d09e33 | 2329 | else if (cupsdCheckGroup(username, pw, name)) |
ef416fc2 | 2330 | return (HTTP_OK); |
2331 | } | |
2332 | ||
2333 | /* | |
2334 | * The user isn't part of the specified group, so deny access... | |
2335 | */ | |
2336 | ||
355e94dc | 2337 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 2338 | "cupsdIsAuthorized: User not in group(s)!"); |
2339 | ||
ee571f26 | 2340 | return (HTTP_FORBIDDEN); |
ef416fc2 | 2341 | } |
2342 | ||
2343 | ||
2344 | /* | |
10d09e33 MS |
2345 | * 'cupsdNewLocation()' - Create a new location for authorization. |
2346 | * | |
2347 | * Note: Still need to call cupsdAddLocation() to add it to the list of global | |
2348 | * locations. | |
ef416fc2 | 2349 | */ |
2350 | ||
10d09e33 MS |
2351 | cupsd_location_t * /* O - Pointer to new location record */ |
2352 | cupsdNewLocation(const char *location) /* I - Location path */ | |
ef416fc2 | 2353 | { |
10d09e33 | 2354 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 2355 | |
2356 | ||
2357 | /* | |
10d09e33 | 2358 | * Try to allocate memory for the new location. |
ef416fc2 | 2359 | */ |
2360 | ||
10d09e33 | 2361 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 2362 | return (NULL); |
2363 | ||
2364 | /* | |
10d09e33 | 2365 | * Initialize the record and copy the name over... |
ef416fc2 | 2366 | */ |
2367 | ||
10d09e33 MS |
2368 | if ((temp->location = _cupsStrAlloc(location)) == NULL) |
2369 | { | |
2370 | free(temp); | |
ef416fc2 | 2371 | return (NULL); |
10d09e33 | 2372 | } |
ef416fc2 | 2373 | |
10d09e33 | 2374 | temp->length = strlen(temp->location); |
ef416fc2 | 2375 | |
2376 | /* | |
10d09e33 | 2377 | * Return the new record... |
ef416fc2 | 2378 | */ |
2379 | ||
ef416fc2 | 2380 | return (temp); |
2381 | } | |
2382 | ||
2383 | ||
f7deaa1a | 2384 | #ifdef HAVE_AUTHORIZATION_H |
2385 | /* | |
2386 | * 'check_authref()' - Check if an authorization services reference has the | |
2387 | * supplied right. | |
2388 | */ | |
2389 | ||
2390 | static int /* O - 1 if right is valid, 0 otherwise */ | |
2391 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
2392 | const char *right) /* I - Right name */ | |
2393 | { | |
2394 | OSStatus status; /* OS Status */ | |
2395 | AuthorizationItem authright; /* Authorization right */ | |
2396 | AuthorizationRights authrights; /* Authorization rights */ | |
2397 | AuthorizationFlags authflags; /* Authorization flags */ | |
2398 | ||
2399 | ||
2400 | /* | |
2401 | * Check to see if the user is allowed to perform the task... | |
2402 | */ | |
2403 | ||
2404 | if (!con->authref) | |
2405 | return (0); | |
2406 | ||
2407 | authright.name = right; | |
2408 | authright.valueLength = 0; | |
2409 | authright.value = NULL; | |
2410 | authright.flags = 0; | |
2411 | ||
2412 | authrights.count = 1; | |
2413 | authrights.items = &authright; | |
2414 | ||
c8fef167 | 2415 | authflags = kAuthorizationFlagDefaults | |
f7deaa1a | 2416 | kAuthorizationFlagExtendRights; |
2417 | ||
c8fef167 MS |
2418 | if ((status = AuthorizationCopyRights(con->authref, &authrights, |
2419 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 2420 | authflags, NULL)) != 0) |
2421 | { | |
2422 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
2423 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
2424 | authright.name, (int)status, cssmErrorString(status)); | |
2425 | return (0); | |
2426 | } | |
2427 | ||
2428 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2429 | "AuthorizationCopyRights(\"%s\") succeeded!", | |
2430 | authright.name); | |
2431 | ||
2432 | return (1); | |
2433 | } | |
2434 | #endif /* HAVE_AUTHORIZATION_H */ | |
2435 | ||
2436 | ||
bd7854cb | 2437 | /* |
2438 | * 'compare_locations()' - Compare two locations. | |
2439 | */ | |
2440 | ||
2441 | static int /* O - Result of comparison */ | |
2442 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
2443 | cupsd_location_t *b) /* I - Second location */ | |
2444 | { | |
2445 | return (strcmp(b->location, a->location)); | |
2446 | } | |
2447 | ||
2448 | ||
10d09e33 MS |
2449 | /* |
2450 | * 'copy_authmask()' - Copy function for auth masks. | |
2451 | */ | |
2452 | ||
2453 | static cupsd_authmask_t * /* O - New auth mask */ | |
2454 | copy_authmask(cupsd_authmask_t *mask, /* I - Existing auth mask */ | |
2455 | void *data) /* I - User data (unused) */ | |
2456 | { | |
2457 | cupsd_authmask_t *temp; /* New auth mask */ | |
2458 | ||
2459 | ||
2460 | (void)data; | |
2461 | ||
2462 | if ((temp = malloc(sizeof(cupsd_authmask_t))) != NULL) | |
2463 | { | |
2464 | memcpy(temp, mask, sizeof(cupsd_authmask_t)); | |
2465 | ||
2466 | if (temp->type == CUPSD_AUTH_NAME || temp->type == CUPSD_AUTH_INTERFACE) | |
2467 | { | |
2468 | /* | |
2469 | * Make a copy of the name... | |
2470 | */ | |
2471 | ||
2472 | if ((temp->mask.name.name = _cupsStrAlloc(temp->mask.name.name)) == NULL) | |
2473 | { | |
2474 | /* | |
2475 | * Failed to make copy... | |
2476 | */ | |
2477 | ||
2478 | free(temp); | |
2479 | temp = NULL; | |
2480 | } | |
2481 | } | |
2482 | } | |
2483 | ||
2484 | return (temp); | |
2485 | } | |
2486 | ||
2487 | ||
d09495fa | 2488 | #if !HAVE_LIBPAM && !defined(HAVE_USERSEC_H) |
ef416fc2 | 2489 | /* |
2490 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
2491 | * as needed. | |
2492 | */ | |
2493 | ||
2494 | static char * /* O - Encrypted password */ | |
2495 | cups_crypt(const char *pw, /* I - Password string */ | |
2496 | const char *salt) /* I - Salt (key) string */ | |
2497 | { | |
bd7854cb | 2498 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2499 | { |
2500 | /* | |
2501 | * Use MD5 passwords without the benefit of PAM; this is for | |
2502 | * Slackware Linux, and the algorithm was taken from the | |
2503 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2504 | */ | |
2505 | ||
2506 | int i; /* Looping var */ | |
2507 | unsigned long n; /* Output number */ | |
2508 | int pwlen; /* Length of password string */ | |
2509 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2510 | char *ptr; /* Pointer into result string */ | |
2511 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2512 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2513 | unsigned char digest[16]; /* MD5 digest result */ | |
2514 | static char result[120]; /* Final password string */ | |
2515 | ||
2516 | ||
2517 | /* | |
2518 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2519 | * Get a maximum of 8 characters of salt data after $1$... | |
2520 | */ | |
2521 | ||
2522 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2523 | if (*salt_end == '$') | |
2524 | break; | |
2525 | ||
2526 | /* | |
2527 | * Compute the MD5 sum we need... | |
2528 | */ | |
2529 | ||
2530 | pwlen = strlen(pw); | |
2531 | ||
757d2cad | 2532 | _cupsMD5Init(&state); |
2533 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2534 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2535 | |
757d2cad | 2536 | _cupsMD5Init(&state2); |
2537 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2538 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2539 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2540 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2541 | |
2542 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2543 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2544 | |
2545 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2546 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2547 | |
757d2cad | 2548 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2549 | |
2550 | for (i = 0; i < 1000; i ++) | |
2551 | { | |
757d2cad | 2552 | _cupsMD5Init(&state); |
ef416fc2 | 2553 | |
2554 | if (i & 1) | |
757d2cad | 2555 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2556 | else |
757d2cad | 2557 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2558 | |
2559 | if (i % 3) | |
757d2cad | 2560 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2561 | |
2562 | if (i % 7) | |
757d2cad | 2563 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2564 | |
2565 | if (i & 1) | |
757d2cad | 2566 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2567 | else |
757d2cad | 2568 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2569 | |
757d2cad | 2570 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2571 | } |
2572 | ||
2573 | /* | |
2574 | * Copy the final sum to the result string and return... | |
2575 | */ | |
2576 | ||
2577 | memcpy(result, salt, salt_end - salt); | |
2578 | ptr = result + (salt_end - salt); | |
2579 | *ptr++ = '$'; | |
2580 | ||
2581 | for (i = 0; i < 5; i ++, ptr += 4) | |
2582 | { | |
2583 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2584 | ||
2585 | if (i < 4) | |
2586 | n |= digest[i + 12]; | |
2587 | else | |
2588 | n |= digest[5]; | |
2589 | ||
2590 | to64(ptr, n, 4); | |
2591 | } | |
2592 | ||
2593 | to64(ptr, digest[11], 2); | |
2594 | ptr += 2; | |
2595 | *ptr = '\0'; | |
2596 | ||
2597 | return (result); | |
2598 | } | |
2599 | else | |
2600 | { | |
2601 | /* | |
2602 | * Use the standard crypt() function... | |
2603 | */ | |
2604 | ||
2605 | return (crypt(pw, salt)); | |
2606 | } | |
2607 | } | |
d09495fa | 2608 | #endif /* !HAVE_LIBPAM && !HAVE_USERSEC_H */ |
ef416fc2 | 2609 | |
2610 | ||
10d09e33 MS |
2611 | /* |
2612 | * 'free_authmask()' - Free function for auth masks. | |
2613 | */ | |
2614 | ||
2615 | static void | |
2616 | free_authmask(cupsd_authmask_t *mask, /* I - Auth mask to free */ | |
2617 | void *data) /* I - User data (unused) */ | |
2618 | { | |
2619 | (void)data; | |
2620 | ||
2621 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) | |
2622 | _cupsStrFree(mask->mask.name.name); | |
2623 | ||
2624 | free(mask); | |
2625 | } | |
2626 | ||
2627 | ||
e1d6a774 | 2628 | /* |
2629 | * 'get_md5_password()' - Get an MD5 password. | |
2630 | */ | |
2631 | ||
2632 | static char * /* O - MD5 password string */ | |
2633 | get_md5_password(const char *username, /* I - Username */ | |
2634 | const char *group, /* I - Group */ | |
2635 | char passwd[33]) /* O - MD5 password string */ | |
2636 | { | |
2637 | cups_file_t *fp; /* passwd.md5 file */ | |
2638 | char filename[1024], /* passwd.md5 filename */ | |
2639 | line[256], /* Line from file */ | |
2640 | tempuser[33], /* User from file */ | |
2641 | tempgroup[33]; /* Group from file */ | |
2642 | ||
2643 | ||
2644 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2645 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2646 | username, group ? group : "(null)", passwd); | |
2647 | ||
2648 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2649 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2650 | { | |
2651 | if (errno != ENOENT) | |
2652 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2653 | strerror(errno)); | |
2654 | ||
2655 | return (NULL); | |
2656 | } | |
2657 | ||
2658 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2659 | { | |
2660 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2661 | { | |
2662 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2663 | continue; | |
2664 | } | |
2665 | ||
2666 | if (!strcmp(username, tempuser) && | |
2667 | (group == NULL || !strcmp(group, tempgroup))) | |
2668 | { | |
2669 | /* | |
2670 | * Found the password entry! | |
2671 | */ | |
2672 | ||
2673 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2674 | username, tempgroup); | |
2675 | ||
2676 | cupsFileClose(fp); | |
2677 | return (passwd); | |
2678 | } | |
2679 | } | |
2680 | ||
2681 | /* | |
2682 | * Didn't find a password entry - return NULL! | |
2683 | */ | |
2684 | ||
2685 | cupsFileClose(fp); | |
2686 | return (NULL); | |
2687 | } | |
2688 | ||
2689 | ||
ef416fc2 | 2690 | #if HAVE_LIBPAM |
2691 | /* | |
2692 | * 'pam_func()' - PAM conversation function. | |
2693 | */ | |
2694 | ||
2695 | static int /* O - Success or failure */ | |
2696 | pam_func( | |
2697 | int num_msg, /* I - Number of messages */ | |
2698 | const struct pam_message **msg, /* I - Messages */ | |
2699 | struct pam_response **resp, /* O - Responses */ | |
2700 | void *appdata_ptr) | |
2701 | /* I - Pointer to connection */ | |
2702 | { | |
2703 | int i; /* Looping var */ | |
2704 | struct pam_response *replies; /* Replies */ | |
2705 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2706 | ||
2707 | ||
2708 | /* | |
2709 | * Allocate memory for the responses... | |
2710 | */ | |
2711 | ||
2712 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2713 | return (PAM_CONV_ERR); | |
2714 | ||
2715 | /* | |
2716 | * Answer all of the messages... | |
2717 | */ | |
2718 | ||
2719 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2720 | ||
2721 | #ifdef __hpux | |
2722 | /* | |
2723 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2724 | * module. This is a workaround... | |
2725 | */ | |
2726 | ||
2727 | data = auth_data; | |
2728 | (void)appdata_ptr; | |
2729 | #else | |
2730 | data = (cupsd_authdata_t *)appdata_ptr; | |
2731 | #endif /* __hpux */ | |
2732 | ||
2733 | for (i = 0; i < num_msg; i ++) | |
2734 | { | |
2735 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2736 | ||
2737 | switch (msg[i]->msg_style) | |
2738 | { | |
2739 | case PAM_PROMPT_ECHO_ON: | |
2740 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2741 | data->username)); | |
2742 | replies[i].resp_retcode = PAM_SUCCESS; | |
2743 | replies[i].resp = strdup(data->username); | |
2744 | break; | |
2745 | ||
2746 | case PAM_PROMPT_ECHO_OFF: | |
2747 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2748 | data->password)); | |
2749 | replies[i].resp_retcode = PAM_SUCCESS; | |
2750 | replies[i].resp = strdup(data->password); | |
2751 | break; | |
2752 | ||
2753 | case PAM_TEXT_INFO: | |
2754 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2755 | replies[i].resp_retcode = PAM_SUCCESS; | |
2756 | replies[i].resp = NULL; | |
2757 | break; | |
2758 | ||
2759 | case PAM_ERROR_MSG: | |
2760 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2761 | replies[i].resp_retcode = PAM_SUCCESS; | |
2762 | replies[i].resp = NULL; | |
2763 | break; | |
2764 | ||
2765 | default: | |
2766 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2767 | msg[i]->msg_style)); | |
2768 | free(replies); | |
2769 | return (PAM_CONV_ERR); | |
2770 | } | |
2771 | } | |
2772 | ||
2773 | /* | |
2774 | * Return the responses back to PAM... | |
2775 | */ | |
2776 | ||
2777 | *resp = replies; | |
2778 | ||
2779 | return (PAM_SUCCESS); | |
2780 | } | |
f7deaa1a | 2781 | #elif !defined(HAVE_USERSEC_H) |
ef416fc2 | 2782 | |
2783 | ||
2784 | /* | |
2785 | * 'to64()' - Base64-encode an integer value... | |
2786 | */ | |
2787 | ||
2788 | static void | |
2789 | to64(char *s, /* O - Output string */ | |
2790 | unsigned long v, /* I - Value to encode */ | |
2791 | int n) /* I - Number of digits */ | |
2792 | { | |
2793 | const char *itoa64 = "./0123456789" | |
2794 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2795 | "abcdefghijklmnopqrstuvwxyz"; | |
2796 | ||
2797 | ||
2798 | for (; n > 0; n --, v >>= 6) | |
2799 | *s++ = itoa64[v & 0x3f]; | |
2800 | } | |
2801 | #endif /* HAVE_LIBPAM */ | |
2802 | ||
2803 | ||
2804 | /* | |
b19ccc9e | 2805 | * End of "$Id: auth.c 7830 2008-08-04 20:38:50Z mike $". |
ef416fc2 | 2806 | */ |