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Commit | Line | Data |
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b423cd4c | 1 | /* |
5ec1fd3d | 2 | * Authorization routines for the CUPS scheduler. |
ef416fc2 | 3 | * |
6eb98aee | 4 | * Copyright 2007-2016 by Apple Inc. |
5ec1fd3d | 5 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
f7deaa1a | 6 | * |
5ec1fd3d MS |
7 | * This file contains Kerberos support code, copyright 2006 by |
8 | * Jelmer Vernooij. | |
ef416fc2 | 9 | * |
e3101897 | 10 | * Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
ef416fc2 | 11 | */ |
12 | ||
13 | /* | |
14 | * Include necessary headers... | |
15 | */ | |
16 | ||
17 | #include "cupsd.h" | |
18 | #include <grp.h> | |
19 | #ifdef HAVE_SHADOW_H | |
20 | # include <shadow.h> | |
21 | #endif /* HAVE_SHADOW_H */ | |
22 | #ifdef HAVE_CRYPT_H | |
23 | # include <crypt.h> | |
24 | #endif /* HAVE_CRYPT_H */ | |
25 | #if HAVE_LIBPAM | |
26 | # ifdef HAVE_PAM_PAM_APPL_H | |
27 | # include <pam/pam_appl.h> | |
28 | # else | |
29 | # include <security/pam_appl.h> | |
30 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
31 | #endif /* HAVE_LIBPAM */ | |
bd7854cb | 32 | #ifdef HAVE_MEMBERSHIP_H |
33 | # include <membership.h> | |
34 | #endif /* HAVE_MEMBERSHIP_H */ | |
f7deaa1a | 35 | #ifdef HAVE_AUTHORIZATION_H |
36 | # include <Security/AuthorizationTags.h> | |
37 | # ifdef HAVE_SECBASEPRIV_H | |
38 | # include <Security/SecBasePriv.h> | |
39 | # else | |
40 | extern const char *cssmErrorString(int error); | |
41 | # endif /* HAVE_SECBASEPRIV_H */ | |
42 | #endif /* HAVE_AUTHORIZATION_H */ | |
db1f069b MS |
43 | #ifdef HAVE_SYS_PARAM_H |
44 | # include <sys/param.h> | |
45 | #endif /* HAVE_SYS_PARAM_H */ | |
bc44d920 | 46 | #ifdef HAVE_SYS_UCRED_H |
47 | # include <sys/ucred.h> | |
48 | typedef struct xucred cupsd_ucred_t; | |
49 | # define CUPSD_UCRED_UID(c) (c).cr_uid | |
50 | #else | |
5a9febac | 51 | # ifndef __OpenBSD__ |
bc44d920 | 52 | typedef struct ucred cupsd_ucred_t; |
5a9febac MS |
53 | # else |
54 | typedef struct sockpeercred cupsd_ucred_t; | |
55 | # endif | |
bc44d920 | 56 | # define CUPSD_UCRED_UID(c) (c).uid |
57 | #endif /* HAVE_SYS_UCRED_H */ | |
ef416fc2 | 58 | |
59 | ||
60 | /* | |
61 | * Local functions... | |
62 | */ | |
63 | ||
f7deaa1a | 64 | #ifdef HAVE_AUTHORIZATION_H |
65 | static int check_authref(cupsd_client_t *con, const char *right); | |
66 | #endif /* HAVE_AUTHORIZATION_H */ | |
bd7854cb | 67 | static int compare_locations(cupsd_location_t *a, |
68 | cupsd_location_t *b); | |
10d09e33 | 69 | static cupsd_authmask_t *copy_authmask(cupsd_authmask_t *am, void *data); |
5a1d7a17 | 70 | #if !HAVE_LIBPAM |
ef416fc2 | 71 | static char *cups_crypt(const char *pw, const char *salt); |
5a1d7a17 | 72 | #endif /* !HAVE_LIBPAM */ |
10d09e33 | 73 | static void free_authmask(cupsd_authmask_t *am, void *data); |
ef416fc2 | 74 | #if HAVE_LIBPAM |
75 | static int pam_func(int, const struct pam_message **, | |
76 | struct pam_response **, void *); | |
5a1d7a17 | 77 | #else |
ef416fc2 | 78 | static void to64(char *s, unsigned long v, int n); |
79 | #endif /* HAVE_LIBPAM */ | |
80 | ||
81 | ||
82 | /* | |
83 | * Local structures... | |
84 | */ | |
85 | ||
86 | #if HAVE_LIBPAM | |
87 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
88 | { | |
3e7fe0ca MS |
89 | char username[HTTP_MAX_VALUE], /* Username string */ |
90 | password[HTTP_MAX_VALUE]; /* Password string */ | |
ef416fc2 | 91 | } cupsd_authdata_t; |
92 | #endif /* HAVE_LIBPAM */ | |
93 | ||
94 | ||
ef416fc2 | 95 | /* |
10d09e33 | 96 | * 'cupsdAddIPMask()' - Add an IP address authorization mask. |
ef416fc2 | 97 | */ |
98 | ||
10d09e33 MS |
99 | int /* O - 1 on success, 0 on failure */ |
100 | cupsdAddIPMask( | |
101 | cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
102 | const unsigned address[4], /* I - IP address */ | |
103 | const unsigned netmask[4]) /* I - IP netmask */ | |
ef416fc2 | 104 | { |
10d09e33 | 105 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 106 | |
107 | ||
ffe32673 | 108 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddIPMask(masks=%p(%p), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", masks, *masks, address[0], address[1], address[2], address[3], netmask[0], netmask[1], netmask[2], netmask[3]); |
ef416fc2 | 109 | |
10d09e33 MS |
110 | temp.type = CUPSD_AUTH_IP; |
111 | memcpy(temp.mask.ip.address, address, sizeof(temp.mask.ip.address)); | |
112 | memcpy(temp.mask.ip.netmask, netmask, sizeof(temp.mask.ip.netmask)); | |
ef416fc2 | 113 | |
bd7854cb | 114 | /* |
10d09e33 | 115 | * Create the masks array as needed and add... |
bd7854cb | 116 | */ |
117 | ||
10d09e33 MS |
118 | if (!*masks) |
119 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
120 | (cups_acopy_func_t)copy_authmask, | |
121 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 122 | |
10d09e33 MS |
123 | return (cupsArrayAdd(*masks, &temp)); |
124 | } | |
ef416fc2 | 125 | |
bd7854cb | 126 | |
10d09e33 MS |
127 | /* |
128 | * 'cupsdAddLocation()' - Add a location for authorization. | |
129 | */ | |
ef416fc2 | 130 | |
10d09e33 MS |
131 | void |
132 | cupsdAddLocation(cupsd_location_t *loc) /* I - Location to add */ | |
133 | { | |
ef416fc2 | 134 | /* |
10d09e33 | 135 | * Make sure the locations array is created... |
ef416fc2 | 136 | */ |
137 | ||
10d09e33 MS |
138 | if (!Locations) |
139 | Locations = cupsArrayNew3((cups_array_func_t)compare_locations, NULL, | |
140 | (cups_ahash_func_t)NULL, 0, | |
141 | (cups_acopy_func_t)NULL, | |
142 | (cups_afree_func_t)cupsdFreeLocation); | |
143 | ||
144 | if (Locations) | |
145 | { | |
146 | cupsArrayAdd(Locations, loc); | |
147 | ||
ffe32673 | 148 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: Added location \"%s\"", loc->location ? loc->location : "(null)"); |
10d09e33 | 149 | } |
ef416fc2 | 150 | } |
151 | ||
152 | ||
153 | /* | |
154 | * 'cupsdAddName()' - Add a name to a location... | |
155 | */ | |
156 | ||
157 | void | |
158 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
159 | char *name) /* I - Name to add */ | |
160 | { | |
ffe32673 | 161 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", loc, name); |
ef416fc2 | 162 | |
10d09e33 MS |
163 | if (!loc->names) |
164 | loc->names = cupsArrayNew3(NULL, NULL, NULL, 0, | |
165 | (cups_acopy_func_t)_cupsStrAlloc, | |
166 | (cups_afree_func_t)_cupsStrFree); | |
ef416fc2 | 167 | |
10d09e33 | 168 | if (!cupsArrayAdd(loc->names, name)) |
ef416fc2 | 169 | { |
170 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
171 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 172 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 173 | return; |
174 | } | |
ef416fc2 | 175 | } |
176 | ||
177 | ||
178 | /* | |
10d09e33 | 179 | * 'cupsdAddNameMask()' - Add a host or interface name authorization mask. |
ef416fc2 | 180 | */ |
181 | ||
10d09e33 MS |
182 | int /* O - 1 on success, 0 on failure */ |
183 | cupsdAddNameMask(cups_array_t **masks, /* IO - Masks array (created as needed) */ | |
184 | char *name) /* I - Host or interface name */ | |
ef416fc2 | 185 | { |
10d09e33 | 186 | cupsd_authmask_t temp; /* New host/domain mask */ |
ef416fc2 | 187 | char ifname[32], /* Interface name */ |
188 | *ifptr; /* Pointer to end of name */ | |
189 | ||
190 | ||
ffe32673 | 191 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddNameMask(masks=%p(%p), name=\"%s\")", masks, *masks, name); |
ef416fc2 | 192 | |
88f9aafc | 193 | if (!_cups_strcasecmp(name, "@LOCAL")) |
ef416fc2 | 194 | { |
195 | /* | |
10d09e33 | 196 | * Deny *interface*... |
ef416fc2 | 197 | */ |
198 | ||
10d09e33 MS |
199 | temp.type = CUPSD_AUTH_INTERFACE; |
200 | temp.mask.name.name = (char *)"*"; | |
ef416fc2 | 201 | } |
88f9aafc | 202 | else if (!_cups_strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 203 | { |
204 | /* | |
10d09e33 | 205 | * Deny *interface*... |
ef416fc2 | 206 | */ |
207 | ||
208 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
209 | ||
10d09e33 | 210 | ifptr = ifname + strlen(ifname) - 1; |
ef416fc2 | 211 | |
10d09e33 | 212 | if (ifptr >= ifname && *ifptr == ')') |
ef416fc2 | 213 | { |
214 | ifptr --; | |
215 | *ifptr = '\0'; | |
216 | } | |
217 | ||
10d09e33 MS |
218 | temp.type = CUPSD_AUTH_INTERFACE; |
219 | temp.mask.name.name = ifname; | |
ef416fc2 | 220 | } |
221 | else | |
222 | { | |
223 | /* | |
10d09e33 | 224 | * Deny name... |
ef416fc2 | 225 | */ |
226 | ||
10d09e33 MS |
227 | if (*name == '*') |
228 | name ++; | |
ef416fc2 | 229 | |
10d09e33 MS |
230 | temp.type = CUPSD_AUTH_NAME; |
231 | temp.mask.name.name = (char *)name; | |
232 | } | |
ef416fc2 | 233 | |
10d09e33 MS |
234 | /* |
235 | * Set the name length... | |
236 | */ | |
ef416fc2 | 237 | |
10d09e33 | 238 | temp.mask.name.length = strlen(temp.mask.name.name); |
ef416fc2 | 239 | |
10d09e33 MS |
240 | /* |
241 | * Create the masks array as needed and add... | |
242 | */ | |
ef416fc2 | 243 | |
10d09e33 MS |
244 | if (!*masks) |
245 | *masks = cupsArrayNew3(NULL, NULL, NULL, 0, | |
246 | (cups_acopy_func_t)copy_authmask, | |
247 | (cups_afree_func_t)free_authmask); | |
ef416fc2 | 248 | |
10d09e33 | 249 | return (cupsArrayAdd(*masks, &temp)); |
ef416fc2 | 250 | } |
251 | ||
252 | ||
253 | /* | |
254 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
255 | */ | |
256 | ||
257 | void | |
258 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
259 | { | |
260 | int type; /* Authentication type */ | |
f7deaa1a | 261 | const char *authorization; /* Pointer into Authorization string */ |
262 | char *ptr, /* Pointer into string */ | |
3e7fe0ca MS |
263 | username[HTTP_MAX_VALUE], |
264 | /* Username string */ | |
265 | password[HTTP_MAX_VALUE]; | |
266 | /* Password string */ | |
db0bd74a | 267 | cupsd_cert_t *localuser; /* Certificate username */ |
ef416fc2 | 268 | |
269 | ||
270 | /* | |
271 | * Locate the best matching location so we know what kind of | |
272 | * authentication to expect... | |
273 | */ | |
274 | ||
996acce8 | 275 | con->best = cupsdFindBest(con->uri, httpGetState(con->http)); |
5bd77a73 | 276 | con->type = CUPSD_AUTH_NONE; |
ef416fc2 | 277 | |
ffe32673 | 278 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "con->uri=\"%s\", con->best=%p(%s)", con->uri, con->best, con->best ? con->best->location : ""); |
ef416fc2 | 279 | |
5bd77a73 | 280 | if (con->best && con->best->type != CUPSD_AUTH_NONE) |
7ff4fea9 | 281 | { |
5bd77a73 | 282 | if (con->best->type == CUPSD_AUTH_DEFAULT) |
dcb445bc | 283 | type = cupsdDefaultAuthType(); |
7ff4fea9 MS |
284 | else |
285 | type = con->best->type; | |
286 | } | |
ef416fc2 | 287 | else |
dcb445bc | 288 | type = cupsdDefaultAuthType(); |
ef416fc2 | 289 | |
290 | /* | |
291 | * Decode the Authorization string... | |
292 | */ | |
293 | ||
996acce8 | 294 | authorization = httpGetField(con->http, HTTP_FIELD_AUTHORIZATION); |
ef416fc2 | 295 | |
ef416fc2 | 296 | username[0] = '\0'; |
297 | password[0] = '\0'; | |
298 | ||
07ed0e9a MS |
299 | #ifdef HAVE_GSSAPI |
300 | con->gss_uid = 0; | |
301 | #endif /* HAVE_GSSAPI */ | |
302 | ||
f7deaa1a | 303 | #ifdef HAVE_AUTHORIZATION_H |
304 | if (con->authref) | |
305 | { | |
306 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
307 | con->authref = NULL; | |
308 | } | |
309 | #endif /* HAVE_AUTHORIZATION_H */ | |
310 | ||
2fb76298 | 311 | if (!*authorization) |
ef416fc2 | 312 | { |
313 | /* | |
314 | * No authorization data provided, return early... | |
315 | */ | |
316 | ||
ffe32673 | 317 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "No authentication data provided."); |
ef416fc2 | 318 | return; |
319 | } | |
f7deaa1a | 320 | #ifdef HAVE_AUTHORIZATION_H |
c8fef167 | 321 | else if (!strncmp(authorization, "AuthRef ", 8) && |
5ec1fd3d | 322 | httpAddrLocalhost(httpGetAddress(con->http))) |
f7deaa1a | 323 | { |
324 | OSStatus status; /* Status */ | |
e0660879 MS |
325 | char authdata[HTTP_MAX_VALUE]; |
326 | /* Nonce value from client */ | |
f7deaa1a | 327 | int authlen; /* Auth string length */ |
328 | AuthorizationItemSet *authinfo; /* Authorization item set */ | |
329 | ||
330 | /* | |
331 | * Get the Authorization Services data... | |
332 | */ | |
333 | ||
c8fef167 | 334 | authorization += 8; |
f7deaa1a | 335 | while (isspace(*authorization & 255)) |
336 | authorization ++; | |
337 | ||
e0660879 MS |
338 | authlen = sizeof(authdata); |
339 | httpDecode64_2(authdata, &authlen, authorization); | |
f7deaa1a | 340 | |
341 | if (authlen != kAuthorizationExternalFormLength) | |
342 | { | |
ffe32673 | 343 | cupsdLogClient(con, CUPSD_LOG_ERROR, "External Authorization reference size is incorrect."); |
f7deaa1a | 344 | return; |
345 | } | |
346 | ||
e0660879 | 347 | if ((status = AuthorizationCreateFromExternalForm((AuthorizationExternalForm *)authdata, &con->authref)) != 0) |
f7deaa1a | 348 | { |
ffe32673 | 349 | cupsdLogClient(con, CUPSD_LOG_ERROR, "AuthorizationCreateFromExternalForm returned %d (%s)", (int)status, cssmErrorString(status)); |
f7deaa1a | 350 | return; |
351 | } | |
352 | ||
c8fef167 | 353 | username[0] = '\0'; |
ed6e7faf | 354 | |
c8fef167 | 355 | if (!AuthorizationCopyInfo(con->authref, kAuthorizationEnvironmentUsername, |
bf3816c7 | 356 | &authinfo)) |
e4572d57 | 357 | { |
ed6e7faf MS |
358 | if (authinfo->count == 1 && authinfo->items[0].value && |
359 | authinfo->items[0].valueLength >= 2) | |
c8fef167 | 360 | { |
ed6e7faf MS |
361 | strlcpy(username, authinfo->items[0].value, sizeof(username)); |
362 | ||
ffe32673 | 363 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Authorized as \"%s\" using AuthRef.", username); |
c8fef167 MS |
364 | } |
365 | ||
e4572d57 | 366 | AuthorizationFreeItemSet(authinfo); |
e4572d57 | 367 | } |
355e94dc | 368 | |
c8fef167 MS |
369 | if (!username[0]) |
370 | { | |
371 | /* | |
372 | * No username in AuthRef, grab username using peer credentials... | |
373 | */ | |
374 | ||
375 | struct passwd *pwd; /* Password entry for this user */ | |
376 | cupsd_ucred_t peercred; /* Peer credentials */ | |
377 | socklen_t peersize; /* Size of peer credentials */ | |
378 | ||
379 | peersize = sizeof(peercred); | |
380 | ||
996acce8 | 381 | if (getsockopt(httpGetFd(con->http), 0, LOCAL_PEERCRED, &peercred, &peersize)) |
c8fef167 | 382 | { |
ffe32673 | 383 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", strerror(errno)); |
c8fef167 MS |
384 | return; |
385 | } | |
386 | ||
387 | if ((pwd = getpwuid(CUPSD_UCRED_UID(peercred))) == NULL) | |
388 | { | |
ffe32673 | 389 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to find UID %d for peer credentials.", (int)CUPSD_UCRED_UID(peercred)); |
c8fef167 MS |
390 | return; |
391 | } | |
392 | ||
393 | strlcpy(username, pwd->pw_name, sizeof(username)); | |
394 | ||
ffe32673 | 395 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Authorized as \"%s\" using AuthRef + PeerCred.", username); |
c8fef167 MS |
396 | } |
397 | ||
5bd77a73 | 398 | con->type = CUPSD_AUTH_BASIC; |
f7deaa1a | 399 | } |
400 | #endif /* HAVE_AUTHORIZATION_H */ | |
bc44d920 | 401 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
402 | else if (!strncmp(authorization, "PeerCred ", 9) && | |
0d40cb1e | 403 | con->http->hostaddr->addr.sa_family == AF_LOCAL && con->best) |
bc44d920 | 404 | { |
405 | /* | |
406 | * Use peer credentials from domain socket connection... | |
407 | */ | |
408 | ||
409 | struct passwd *pwd; /* Password entry for this user */ | |
410 | cupsd_ucred_t peercred; /* Peer credentials */ | |
411 | socklen_t peersize; /* Size of peer credentials */ | |
f14324a7 MS |
412 | #ifdef HAVE_AUTHORIZATION_H |
413 | const char *name; /* Authorizing name */ | |
6961465f MS |
414 | int no_peer = 0; /* Don't allow peer credentials? */ |
415 | ||
416 | /* | |
417 | * See if we should allow peer credentials... | |
418 | */ | |
bc44d920 | 419 | |
f14324a7 MS |
420 | for (name = (char *)cupsArrayFirst(con->best->names); |
421 | name; | |
422 | name = (char *)cupsArrayNext(con->best->names)) | |
6961465f | 423 | { |
dcb445bc MS |
424 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9) || |
425 | !_cups_strcasecmp(name, "@SYSTEM")) | |
f14324a7 | 426 | { |
6961465f MS |
427 | /* Normally don't want peer credentials if we need an auth key... */ |
428 | no_peer = 1; | |
429 | } | |
430 | else if (!_cups_strcasecmp(name, "@OWNER")) | |
431 | { | |
432 | /* but if @OWNER is present then we allow it... */ | |
433 | no_peer = 0; | |
434 | break; | |
f14324a7 | 435 | } |
6961465f MS |
436 | } |
437 | ||
438 | if (no_peer) | |
439 | { | |
ffe32673 | 440 | cupsdLogClient(con, CUPSD_LOG_ERROR, "PeerCred authentication not allowed for resource per AUTHKEY policy."); |
6961465f MS |
441 | return; |
442 | } | |
f14324a7 | 443 | #endif /* HAVE_AUTHORIZATION_H */ |
bc44d920 | 444 | |
445 | if ((pwd = getpwnam(authorization + 9)) == NULL) | |
446 | { | |
ffe32673 | 447 | cupsdLogClient(con, CUPSD_LOG_ERROR, "User \"%s\" does not exist.", authorization + 9); |
bc44d920 | 448 | return; |
449 | } | |
450 | ||
451 | peersize = sizeof(peercred); | |
452 | ||
f11a948a | 453 | # ifdef __APPLE__ |
996acce8 | 454 | if (getsockopt(httpGetFd(con->http), 0, LOCAL_PEERCRED, &peercred, &peersize)) |
f11a948a | 455 | # else |
996acce8 | 456 | if (getsockopt(httpGetFd(con->http), SOL_SOCKET, SO_PEERCRED, &peercred, &peersize)) |
f11a948a | 457 | # endif /* __APPLE__ */ |
bc44d920 | 458 | { |
ffe32673 | 459 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", strerror(errno)); |
bc44d920 | 460 | return; |
461 | } | |
462 | ||
463 | if (pwd->pw_uid != CUPSD_UCRED_UID(peercred)) | |
464 | { | |
ffe32673 | 465 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Invalid peer credentials for \"%s\" - got %d, expected %d.", authorization + 9, CUPSD_UCRED_UID(peercred), pwd->pw_uid); |
bc44d920 | 466 | # ifdef HAVE_SYS_UCRED_H |
ffe32673 MS |
467 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cr_version=%d", peercred.cr_version); |
468 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cr_uid=%d", peercred.cr_uid); | |
469 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cr_ngroups=%d", peercred.cr_ngroups); | |
470 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cr_groups[0]=%d", peercred.cr_groups[0]); | |
bc44d920 | 471 | # endif /* HAVE_SYS_UCRED_H */ |
472 | return; | |
473 | } | |
474 | ||
475 | strlcpy(username, authorization + 9, sizeof(username)); | |
355e94dc | 476 | |
eac3a0a0 MS |
477 | # ifdef HAVE_GSSAPI |
478 | con->gss_uid = CUPSD_UCRED_UID(peercred); | |
479 | # endif /* HAVE_GSSAPI */ | |
480 | ||
ffe32673 | 481 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Authorized as %s using PeerCred.", username); |
2fb76298 | 482 | |
5bd77a73 | 483 | con->type = CUPSD_AUTH_BASIC; |
bc44d920 | 484 | } |
485 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
ef416fc2 | 486 | else if (!strncmp(authorization, "Local", 5) && |
5ec1fd3d | 487 | httpAddrLocalhost(httpGetAddress(con->http))) |
ef416fc2 | 488 | { |
489 | /* | |
490 | * Get Local certificate authentication data... | |
491 | */ | |
492 | ||
493 | authorization += 5; | |
80ca4592 | 494 | while (isspace(*authorization & 255)) |
ef416fc2 | 495 | authorization ++; |
496 | ||
0fa6c7fa | 497 | if ((localuser = cupsdFindCert(authorization)) == NULL) |
ef416fc2 | 498 | { |
ffe32673 | 499 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Local authentication certificate not found."); |
ef416fc2 | 500 | return; |
501 | } | |
2fb76298 | 502 | |
0fa6c7fa MS |
503 | strlcpy(username, localuser->username, sizeof(username)); |
504 | con->type = localuser->type; | |
505 | ||
ffe32673 | 506 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Authorized as %s using Local.", username); |
ef416fc2 | 507 | } |
2fb76298 | 508 | else if (!strncmp(authorization, "Basic", 5)) |
ef416fc2 | 509 | { |
510 | /* | |
511 | * Get the Basic authentication data... | |
512 | */ | |
513 | ||
514 | int userlen; /* Username:password length */ | |
515 | ||
516 | ||
517 | authorization += 5; | |
80ca4592 | 518 | while (isspace(*authorization & 255)) |
ef416fc2 | 519 | authorization ++; |
520 | ||
521 | userlen = sizeof(username); | |
522 | httpDecode64_2(username, &userlen, authorization); | |
523 | ||
524 | /* | |
525 | * Pull the username and password out... | |
526 | */ | |
527 | ||
528 | if ((ptr = strchr(username, ':')) == NULL) | |
529 | { | |
ffe32673 | 530 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Missing Basic password."); |
ef416fc2 | 531 | return; |
532 | } | |
533 | ||
534 | *ptr++ = '\0'; | |
535 | ||
536 | if (!username[0]) | |
537 | { | |
538 | /* | |
539 | * Username must not be empty... | |
540 | */ | |
541 | ||
ffe32673 | 542 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Empty Basic username."); |
ef416fc2 | 543 | return; |
544 | } | |
545 | ||
546 | if (!*ptr) | |
547 | { | |
548 | /* | |
549 | * Password must not be empty... | |
550 | */ | |
551 | ||
ffe32673 | 552 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Empty Basic password."); |
ef416fc2 | 553 | return; |
554 | } | |
555 | ||
556 | strlcpy(password, ptr, sizeof(password)); | |
557 | ||
558 | /* | |
559 | * Validate the username and password... | |
560 | */ | |
561 | ||
562 | switch (type) | |
563 | { | |
2fb76298 | 564 | default : |
5bd77a73 | 565 | case CUPSD_AUTH_BASIC : |
ef416fc2 | 566 | { |
567 | #if HAVE_LIBPAM | |
568 | /* | |
569 | * Only use PAM to do authentication. This supports MD5 | |
570 | * passwords, among other things... | |
571 | */ | |
572 | ||
573 | pam_handle_t *pamh; /* PAM authentication handle */ | |
574 | int pamerr; /* PAM error code */ | |
575 | struct pam_conv pamdata;/* PAM conversation data */ | |
576 | cupsd_authdata_t data; /* Authentication data */ | |
577 | ||
578 | ||
579 | strlcpy(data.username, username, sizeof(data.username)); | |
580 | strlcpy(data.password, password, sizeof(data.password)); | |
581 | ||
5a1d7a17 | 582 | # ifdef __sun |
e1d6a774 | 583 | pamdata.conv = (int (*)(int, struct pam_message **, |
584 | struct pam_response **, | |
585 | void *))pam_func; | |
586 | # else | |
ef416fc2 | 587 | pamdata.conv = pam_func; |
5a1d7a17 | 588 | # endif /* __sun */ |
ef416fc2 | 589 | pamdata.appdata_ptr = &data; |
590 | ||
ef416fc2 | 591 | pamerr = pam_start("cups", username, &pamdata, &pamh); |
592 | if (pamerr != PAM_SUCCESS) | |
593 | { | |
ffe32673 | 594 | cupsdLogClient(con, CUPSD_LOG_ERROR, "pam_start() returned %d (%s)", pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 595 | return; |
596 | } | |
597 | ||
ee571f26 MS |
598 | # ifdef HAVE_PAM_SET_ITEM |
599 | # ifdef PAM_RHOST | |
996acce8 | 600 | pamerr = pam_set_item(pamh, PAM_RHOST, con->http->hostname); |
a4924f6c | 601 | if (pamerr != PAM_SUCCESS) |
ffe32673 | 602 | cupsdLogClient(con, CUPSD_LOG_WARN, "pam_set_item(PAM_RHOST) returned %d (%s)", pamerr, pam_strerror(pamh, pamerr)); |
ee571f26 MS |
603 | # endif /* PAM_RHOST */ |
604 | ||
605 | # ifdef PAM_TTY | |
606 | pamerr = pam_set_item(pamh, PAM_TTY, "cups"); | |
607 | if (pamerr != PAM_SUCCESS) | |
ffe32673 | 608 | cupsdLogClient(con, CUPSD_LOG_WARN, "pam_set_item(PAM_TTY) returned %d (%s)", pamerr, pam_strerror(pamh, pamerr)); |
ee571f26 MS |
609 | # endif /* PAM_TTY */ |
610 | # endif /* HAVE_PAM_SET_ITEM */ | |
611 | ||
ef416fc2 | 612 | pamerr = pam_authenticate(pamh, PAM_SILENT); |
613 | if (pamerr != PAM_SUCCESS) | |
614 | { | |
ffe32673 | 615 | cupsdLogClient(con, CUPSD_LOG_ERROR, "pam_authenticate() returned %d (%s)", pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 616 | pam_end(pamh, 0); |
617 | return; | |
618 | } | |
619 | ||
94da7e34 MS |
620 | # ifdef HAVE_PAM_SETCRED |
621 | pamerr = pam_setcred(pamh, PAM_ESTABLISH_CRED | PAM_SILENT); | |
622 | if (pamerr != PAM_SUCCESS) | |
ffe32673 | 623 | cupsdLogClient(con, CUPSD_LOG_WARN, "pam_setcred() returned %d (%s)", pamerr, pam_strerror(pamh, pamerr)); |
94da7e34 MS |
624 | # endif /* HAVE_PAM_SETCRED */ |
625 | ||
ef416fc2 | 626 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); |
627 | if (pamerr != PAM_SUCCESS) | |
628 | { | |
ffe32673 | 629 | cupsdLogClient(con, CUPSD_LOG_ERROR, "pam_acct_mgmt() returned %d (%s)", pamerr, pam_strerror(pamh, pamerr)); |
ef416fc2 | 630 | pam_end(pamh, 0); |
631 | return; | |
632 | } | |
633 | ||
634 | pam_end(pamh, PAM_SUCCESS); | |
635 | ||
ef416fc2 | 636 | #else |
637 | /* | |
638 | * Use normal UNIX password file-based authentication... | |
639 | */ | |
640 | ||
641 | char *pass; /* Encrypted password */ | |
642 | struct passwd *pw; /* User password data */ | |
643 | # ifdef HAVE_SHADOW_H | |
644 | struct spwd *spw; /* Shadow password data */ | |
645 | # endif /* HAVE_SHADOW_H */ | |
646 | ||
647 | ||
648 | pw = getpwnam(username); /* Get the current password */ | |
649 | endpwent(); /* Close the password file */ | |
650 | ||
651 | if (!pw) | |
652 | { | |
653 | /* | |
654 | * No such user... | |
655 | */ | |
656 | ||
ffe32673 | 657 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unknown username \"%s\".", username); |
80ca4592 | 658 | return; |
ef416fc2 | 659 | } |
660 | ||
661 | # ifdef HAVE_SHADOW_H | |
662 | spw = getspnam(username); | |
663 | endspent(); | |
664 | ||
665 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
666 | { | |
667 | /* | |
668 | * Don't allow blank passwords! | |
669 | */ | |
670 | ||
ffe32673 | 671 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Username \"%s\" has no shadow password.", username); |
ef416fc2 | 672 | return; |
673 | } | |
674 | ||
675 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
676 | # else | |
677 | if (!pw->pw_passwd[0]) | |
678 | # endif /* HAVE_SHADOW_H */ | |
679 | { | |
680 | /* | |
681 | * Don't allow blank passwords! | |
682 | */ | |
683 | ||
ffe32673 | 684 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Username \"%s\" has no password.", username); |
ef416fc2 | 685 | return; |
686 | } | |
687 | ||
688 | /* | |
689 | * OK, the password isn't blank, so compare with what came from the | |
690 | * client... | |
691 | */ | |
692 | ||
693 | pass = cups_crypt(password, pw->pw_passwd); | |
694 | ||
ef416fc2 | 695 | if (!pass || strcmp(pw->pw_passwd, pass)) |
696 | { | |
697 | # ifdef HAVE_SHADOW_H | |
698 | if (spw) | |
699 | { | |
700 | pass = cups_crypt(password, spw->sp_pwdp); | |
701 | ||
ef416fc2 | 702 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) |
703 | { | |
ffe32673 | 704 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Authentication failed for user \"%s\".", username); |
ef416fc2 | 705 | return; |
706 | } | |
707 | } | |
708 | else | |
709 | # endif /* HAVE_SHADOW_H */ | |
710 | { | |
ffe32673 | 711 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Authentication failed for user \"%s\".", username); |
ef416fc2 | 712 | return; |
713 | } | |
714 | } | |
715 | #endif /* HAVE_LIBPAM */ | |
716 | } | |
355e94dc | 717 | |
ffe32673 | 718 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Authorized as \"%s\" using Basic.", username); |
ef416fc2 | 719 | break; |
ef416fc2 | 720 | } |
2fb76298 MS |
721 | |
722 | con->type = type; | |
ef416fc2 | 723 | } |
f7deaa1a | 724 | #ifdef HAVE_GSSAPI |
c8fef167 | 725 | else if (!strncmp(authorization, "Negotiate", 9)) |
f7deaa1a | 726 | { |
727 | int len; /* Length of authorization string */ | |
f7deaa1a | 728 | gss_ctx_id_t context; /* Authorization context */ |
729 | OM_uint32 major_status, /* Major status code */ | |
730 | minor_status; /* Minor status code */ | |
731 | gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER, | |
732 | /* Input token from string */ | |
733 | output_token = GSS_C_EMPTY_BUFFER; | |
734 | /* Output token for username */ | |
735 | gss_name_t client_name; /* Client name */ | |
736 | ||
737 | ||
f42414bf | 738 | # ifdef __APPLE__ |
739 | /* | |
740 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
741 | * to use it... | |
742 | */ | |
743 | ||
d2ff4622 | 744 | if (&gss_init_sec_context == NULL) |
f42414bf | 745 | { |
ffe32673 | 746 | cupsdLogClient(con, CUPSD_LOG_WARN, "GSSAPI/Kerberos authentication failed because the Kerberos framework is not present."); |
f42414bf | 747 | return; |
748 | } | |
749 | # endif /* __APPLE__ */ | |
750 | ||
f7deaa1a | 751 | /* |
752 | * Find the start of the Kerberos input token... | |
753 | */ | |
754 | ||
755 | authorization += 9; | |
756 | while (isspace(*authorization & 255)) | |
757 | authorization ++; | |
758 | ||
759 | if (!*authorization) | |
760 | { | |
ffe32673 | 761 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "No authentication data specified."); |
f7deaa1a | 762 | return; |
763 | } | |
764 | ||
f7deaa1a | 765 | /* |
766 | * Decode the authorization string to get the input token... | |
767 | */ | |
768 | ||
7e86f2f6 MS |
769 | len = (int)strlen(authorization); |
770 | input_token.value = malloc((size_t)len); | |
f7deaa1a | 771 | input_token.value = httpDecode64_2(input_token.value, &len, |
c7017ecc | 772 | authorization); |
7e86f2f6 | 773 | input_token.length = (size_t)len; |
f7deaa1a | 774 | |
775 | /* | |
776 | * Accept the input token to get the authorization info... | |
777 | */ | |
778 | ||
779 | context = GSS_C_NO_CONTEXT; | |
780 | client_name = GSS_C_NO_NAME; | |
781 | major_status = gss_accept_sec_context(&minor_status, | |
782 | &context, | |
dcb445bc | 783 | ServerCreds, |
f7deaa1a | 784 | &input_token, |
785 | GSS_C_NO_CHANNEL_BINDINGS, | |
786 | &client_name, | |
787 | NULL, | |
07ed0e9a MS |
788 | &output_token, |
789 | NULL, | |
f7deaa1a | 790 | NULL, |
07ed0e9a MS |
791 | NULL); |
792 | ||
793 | if (output_token.length > 0) | |
794 | gss_release_buffer(&minor_status, &output_token); | |
f7deaa1a | 795 | |
796 | if (GSS_ERROR(major_status)) | |
797 | { | |
ffe32673 | 798 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, "[Client %d] Error accepting GSSAPI security context.", con->number); |
f7deaa1a | 799 | |
800 | if (context != GSS_C_NO_CONTEXT) | |
801 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 802 | return; |
803 | } | |
804 | ||
97c9a8d7 MS |
805 | con->have_gss = 1; |
806 | ||
76cd9e37 MS |
807 | /* |
808 | * Get the username associated with the client's credentials... | |
f7deaa1a | 809 | */ |
810 | ||
355e94dc | 811 | if (major_status == GSS_S_CONTINUE_NEEDED) |
ffe32673 | 812 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, "[Client %d] Credentials not complete.", con->number); |
355e94dc | 813 | else if (major_status == GSS_S_COMPLETE) |
f7deaa1a | 814 | { |
c8fef167 | 815 | major_status = gss_display_name(&minor_status, client_name, |
f7deaa1a | 816 | &output_token, NULL); |
817 | ||
818 | if (GSS_ERROR(major_status)) | |
819 | { | |
ffe32673 | 820 | cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status, "[Client %d] Error getting username.", con->number); |
f7deaa1a | 821 | gss_release_name(&minor_status, &client_name); |
822 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
f7deaa1a | 823 | return; |
824 | } | |
825 | ||
f7deaa1a | 826 | strlcpy(username, output_token.value, sizeof(username)); |
355e94dc | 827 | |
ffe32673 | 828 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Authorized as \"%s\" using Negotiate.", username); |
f7deaa1a | 829 | |
e07d4801 | 830 | gss_release_name(&minor_status, &client_name); |
f7deaa1a | 831 | gss_release_buffer(&minor_status, &output_token); |
2fb76298 | 832 | |
5bd77a73 | 833 | con->type = CUPSD_AUTH_NEGOTIATE; |
f7deaa1a | 834 | } |
e07d4801 MS |
835 | |
836 | gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER); | |
07ed0e9a MS |
837 | |
838 | # if defined(SO_PEERCRED) && defined(AF_LOCAL) | |
839 | /* | |
840 | * Get the client's UID if we are printing locally - that allows a backend | |
841 | * to run as the correct user to get Kerberos credentials of its own. | |
842 | */ | |
843 | ||
5ec1fd3d | 844 | if (httpAddrFamily(con->http->hostaddr) == AF_LOCAL) |
07ed0e9a MS |
845 | { |
846 | cupsd_ucred_t peercred; /* Peer credentials */ | |
847 | socklen_t peersize; /* Size of peer credentials */ | |
848 | ||
849 | peersize = sizeof(peercred); | |
850 | ||
851 | # ifdef __APPLE__ | |
996acce8 | 852 | if (getsockopt(httpGetFd(con->http), 0, LOCAL_PEERCRED, &peercred, &peersize)) |
07ed0e9a | 853 | # else |
996acce8 | 854 | if (getsockopt(httpGetFd(con->http), SOL_SOCKET, SO_PEERCRED, &peercred, |
07ed0e9a MS |
855 | &peersize)) |
856 | # endif /* __APPLE__ */ | |
857 | { | |
ffe32673 | 858 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get peer credentials - %s", strerror(errno)); |
07ed0e9a MS |
859 | } |
860 | else | |
861 | { | |
ffe32673 | 862 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Using credentials for UID %d.", CUPSD_UCRED_UID(peercred)); |
07ed0e9a MS |
863 | con->gss_uid = CUPSD_UCRED_UID(peercred); |
864 | } | |
865 | } | |
866 | # endif /* SO_PEERCRED && AF_LOCAL */ | |
f7deaa1a | 867 | } |
868 | #endif /* HAVE_GSSAPI */ | |
2fb76298 | 869 | else |
ef416fc2 | 870 | { |
355e94dc | 871 | char scheme[256]; /* Auth scheme... */ |
355e94dc MS |
872 | |
873 | ||
874 | if (sscanf(authorization, "%255s", scheme) != 1) | |
5a9febac | 875 | strlcpy(scheme, "UNKNOWN", sizeof(scheme)); |
355e94dc | 876 | |
ffe32673 | 877 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\".", scheme); |
ef416fc2 | 878 | return; |
879 | } | |
880 | ||
881 | /* | |
882 | * If we get here, then we were able to validate the username and | |
883 | * password - copy the validated username and password to the client | |
884 | * data and return... | |
885 | */ | |
886 | ||
887 | strlcpy(con->username, username, sizeof(con->username)); | |
888 | strlcpy(con->password, password, sizeof(con->password)); | |
ef416fc2 | 889 | } |
890 | ||
891 | ||
080811b1 MS |
892 | /* |
893 | * 'cupsdCheckAccess()' - Check whether the given address is allowed to | |
894 | * access a location. | |
895 | */ | |
896 | ||
897 | int /* O - 1 if allowed, 0 otherwise */ | |
898 | cupsdCheckAccess( | |
899 | unsigned ip[4], /* I - Client address */ | |
5ec1fd3d | 900 | const char *name, /* I - Client hostname */ |
7e86f2f6 | 901 | size_t namelen, /* I - Length of hostname */ |
080811b1 MS |
902 | cupsd_location_t *loc) /* I - Location to check */ |
903 | { | |
904 | int allow; /* 1 if allowed, 0 otherwise */ | |
905 | ||
906 | ||
88f9aafc | 907 | if (!_cups_strcasecmp(name, "localhost")) |
080811b1 MS |
908 | { |
909 | /* | |
910 | * Access from localhost (127.0.0.1 or ::1) is always allowed... | |
911 | */ | |
912 | ||
913 | return (1); | |
914 | } | |
915 | else | |
916 | { | |
917 | /* | |
918 | * Do authorization checks on the domain/address... | |
919 | */ | |
920 | ||
921 | switch (loc->order_type) | |
922 | { | |
923 | default : | |
924 | allow = 0; /* anti-compiler-warning-code */ | |
925 | break; | |
926 | ||
5bd77a73 | 927 | case CUPSD_AUTH_ALLOW : /* Order Deny,Allow */ |
080811b1 MS |
928 | allow = 1; |
929 | ||
10d09e33 | 930 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
931 | allow = 0; |
932 | ||
10d09e33 | 933 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
934 | allow = 1; |
935 | break; | |
936 | ||
5bd77a73 | 937 | case CUPSD_AUTH_DENY : /* Order Allow,Deny */ |
080811b1 MS |
938 | allow = 0; |
939 | ||
10d09e33 | 940 | if (cupsdCheckAuth(ip, name, namelen, loc->allow)) |
080811b1 MS |
941 | allow = 1; |
942 | ||
10d09e33 | 943 | if (cupsdCheckAuth(ip, name, namelen, loc->deny)) |
080811b1 MS |
944 | allow = 0; |
945 | break; | |
946 | } | |
947 | } | |
948 | ||
949 | return (allow); | |
950 | } | |
951 | ||
952 | ||
ef416fc2 | 953 | /* |
954 | * 'cupsdCheckAuth()' - Check authorization masks. | |
955 | */ | |
956 | ||
957 | int /* O - 1 if mask matches, 0 otherwise */ | |
10d09e33 | 958 | cupsdCheckAuth(unsigned ip[4], /* I - Client address */ |
5ec1fd3d | 959 | const char *name, /* I - Client hostname */ |
7e86f2f6 | 960 | size_t name_len, /* I - Length of hostname */ |
10d09e33 | 961 | cups_array_t *masks) /* I - Masks */ |
ef416fc2 | 962 | { |
10d09e33 MS |
963 | int i; /* Looping var */ |
964 | cupsd_authmask_t *mask; /* Current mask */ | |
965 | cupsd_netif_t *iface; /* Network interface */ | |
966 | unsigned netip4; /* IPv4 network address */ | |
ef416fc2 | 967 | #ifdef AF_INET6 |
10d09e33 | 968 | unsigned netip6[4]; /* IPv6 network address */ |
ef416fc2 | 969 | #endif /* AF_INET6 */ |
970 | ||
e07d4801 | 971 | |
10d09e33 MS |
972 | for (mask = (cupsd_authmask_t *)cupsArrayFirst(masks); |
973 | mask; | |
974 | mask = (cupsd_authmask_t *)cupsArrayNext(masks)) | |
ef416fc2 | 975 | { |
10d09e33 | 976 | switch (mask->type) |
ef416fc2 | 977 | { |
5bd77a73 | 978 | case CUPSD_AUTH_INTERFACE : |
ef416fc2 | 979 | /* |
980 | * Check for a match with a network interface... | |
981 | */ | |
982 | ||
983 | netip4 = htonl(ip[3]); | |
984 | ||
985 | #ifdef AF_INET6 | |
986 | netip6[0] = htonl(ip[0]); | |
987 | netip6[1] = htonl(ip[1]); | |
988 | netip6[2] = htonl(ip[2]); | |
989 | netip6[3] = htonl(ip[3]); | |
990 | #endif /* AF_INET6 */ | |
991 | ||
84ec3a84 MS |
992 | cupsdNetIFUpdate(); |
993 | ||
10d09e33 | 994 | if (!strcmp(mask->mask.name.name, "*")) |
ef416fc2 | 995 | { |
e07d4801 MS |
996 | #ifdef __APPLE__ |
997 | /* | |
998 | * Allow Back-to-My-Mac addresses... | |
999 | */ | |
1000 | ||
1001 | if ((ip[0] & 0xff000000) == 0xfd000000) | |
1002 | return (1); | |
1003 | #endif /* __APPLE__ */ | |
1004 | ||
ef416fc2 | 1005 | /* |
1006 | * Check against all local interfaces... | |
1007 | */ | |
1008 | ||
e00b005a | 1009 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
1010 | iface; | |
1011 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 1012 | { |
1013 | /* | |
1014 | * Only check local interfaces... | |
1015 | */ | |
1016 | ||
1017 | if (!iface->is_local) | |
1018 | continue; | |
1019 | ||
1020 | if (iface->address.addr.sa_family == AF_INET) | |
1021 | { | |
1022 | /* | |
1023 | * Check IPv4 address... | |
1024 | */ | |
1025 | ||
1026 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1027 | (iface->address.ipv4.sin_addr.s_addr & | |
1028 | iface->mask.ipv4.sin_addr.s_addr)) | |
1029 | return (1); | |
1030 | } | |
1031 | #ifdef AF_INET6 | |
1032 | else | |
1033 | { | |
1034 | /* | |
1035 | * Check IPv6 address... | |
1036 | */ | |
1037 | ||
1038 | for (i = 0; i < 4; i ++) | |
1039 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1040 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1041 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1042 | break; | |
1043 | ||
1044 | if (i == 4) | |
1045 | return (1); | |
1046 | } | |
1047 | #endif /* AF_INET6 */ | |
1048 | } | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | /* | |
1053 | * Check the named interface... | |
1054 | */ | |
1055 | ||
e00b005a | 1056 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
ed486911 | 1057 | iface; |
e00b005a | 1058 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) |
ef416fc2 | 1059 | { |
10d09e33 | 1060 | if (strcmp(mask->mask.name.name, iface->name)) |
ed486911 | 1061 | continue; |
1062 | ||
ef416fc2 | 1063 | if (iface->address.addr.sa_family == AF_INET) |
1064 | { | |
1065 | /* | |
1066 | * Check IPv4 address... | |
1067 | */ | |
1068 | ||
1069 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
1070 | (iface->address.ipv4.sin_addr.s_addr & | |
1071 | iface->mask.ipv4.sin_addr.s_addr)) | |
1072 | return (1); | |
1073 | } | |
1074 | #ifdef AF_INET6 | |
1075 | else | |
1076 | { | |
1077 | /* | |
1078 | * Check IPv6 address... | |
1079 | */ | |
1080 | ||
1081 | for (i = 0; i < 4; i ++) | |
1082 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
1083 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
1084 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
1085 | break; | |
1086 | ||
1087 | if (i == 4) | |
1088 | return (1); | |
1089 | } | |
1090 | #endif /* AF_INET6 */ | |
1091 | } | |
1092 | } | |
1093 | break; | |
1094 | ||
5bd77a73 | 1095 | case CUPSD_AUTH_NAME : |
ef416fc2 | 1096 | /* |
1097 | * Check for exact name match... | |
1098 | */ | |
1099 | ||
88f9aafc | 1100 | if (!_cups_strcasecmp(name, mask->mask.name.name)) |
ef416fc2 | 1101 | return (1); |
1102 | ||
1103 | /* | |
1104 | * Check for domain match... | |
1105 | */ | |
1106 | ||
10d09e33 MS |
1107 | if (name_len >= mask->mask.name.length && |
1108 | mask->mask.name.name[0] == '.' && | |
88f9aafc | 1109 | !_cups_strcasecmp(name + name_len - mask->mask.name.length, |
10d09e33 | 1110 | mask->mask.name.name)) |
ef416fc2 | 1111 | return (1); |
1112 | break; | |
1113 | ||
5bd77a73 | 1114 | case CUPSD_AUTH_IP : |
ef416fc2 | 1115 | /* |
1116 | * Check for IP/network address match... | |
1117 | */ | |
1118 | ||
1119 | for (i = 0; i < 4; i ++) | |
10d09e33 MS |
1120 | if ((ip[i] & mask->mask.ip.netmask[i]) != |
1121 | mask->mask.ip.address[i]) | |
ef416fc2 | 1122 | break; |
1123 | ||
1124 | if (i == 4) | |
1125 | return (1); | |
1126 | break; | |
1127 | } | |
ef416fc2 | 1128 | } |
1129 | ||
1130 | return (0); | |
1131 | } | |
1132 | ||
1133 | ||
1134 | /* | |
1135 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
1136 | */ | |
1137 | ||
1138 | int /* O - 1 if user is a member, 0 otherwise */ | |
1139 | cupsdCheckGroup( | |
1140 | const char *username, /* I - User name */ | |
1141 | struct passwd *user, /* I - System user info */ | |
1142 | const char *groupname) /* I - Group name */ | |
1143 | { | |
8922323b | 1144 | int i; /* Looping var */ |
36374693 MS |
1145 | struct group *group; /* Group info */ |
1146 | gid_t groupid; /* ID of named group */ | |
bd7854cb | 1147 | #ifdef HAVE_MBR_UID_TO_UUID |
8922323b MS |
1148 | uuid_t useruuid, /* UUID for username */ |
1149 | groupuuid; /* UUID for groupname */ | |
1150 | int is_member; /* True if user is a member of group */ | |
bd7854cb | 1151 | #endif /* HAVE_MBR_UID_TO_UUID */ |
ef416fc2 | 1152 | |
1153 | ||
ffe32673 | 1154 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", username, user, groupname); |
ef416fc2 | 1155 | |
1156 | /* | |
1157 | * Validate input... | |
1158 | */ | |
1159 | ||
1160 | if (!username || !groupname) | |
1161 | return (0); | |
1162 | ||
1163 | /* | |
1164 | * Check to see if the user is a member of the named group... | |
1165 | */ | |
1166 | ||
1167 | group = getgrnam(groupname); | |
1168 | endgrent(); | |
1169 | ||
1170 | if (group != NULL) | |
1171 | { | |
1172 | /* | |
1173 | * Group exists, check it... | |
1174 | */ | |
1175 | ||
36374693 MS |
1176 | groupid = group->gr_gid; |
1177 | ||
6eb98aee MS |
1178 | #ifdef HAVE_GETGROUPLIST |
1179 | if (user) | |
1180 | { | |
f093225b | 1181 | int ngroups; /* Number of groups */ |
fdc3c81a MS |
1182 | # ifdef __APPLE__ |
1183 | int groups[2048]; /* Groups that user belongs to */ | |
1184 | # else | |
f093225b | 1185 | gid_t groups[2048]; /* Groups that user belongs to */ |
fdc3c81a | 1186 | # endif /* __APPLE__ */ |
6eb98aee MS |
1187 | |
1188 | ngroups = (int)(sizeof(groups) / sizeof(groups[0])); | |
fdc3c81a MS |
1189 | # ifdef __APPLE__ |
1190 | getgrouplist(username, (int)user->pw_gid, groups, &ngroups); | |
1191 | # else | |
f093225b | 1192 | getgrouplist(username, user->pw_gid, groups, &ngroups); |
fdc3c81a | 1193 | #endif /* __APPLE__ */ |
6eb98aee MS |
1194 | |
1195 | for (i = 0; i < ngroups; i ++) | |
36374693 | 1196 | if ((int)groupid == (int)groups[i]) |
6eb98aee MS |
1197 | return (1); |
1198 | } | |
6eb98aee | 1199 | |
36374693 | 1200 | #else |
ef416fc2 | 1201 | for (i = 0; group->gr_mem[i]; i ++) |
36374693 | 1202 | { |
88f9aafc | 1203 | if (!_cups_strcasecmp(username, group->gr_mem[i])) |
ef416fc2 | 1204 | return (1); |
36374693 MS |
1205 | } |
1206 | #endif /* HAVE_GETGROUPLIST */ | |
ef416fc2 | 1207 | } |
36374693 MS |
1208 | else |
1209 | groupid = (gid_t)-1; | |
ef416fc2 | 1210 | |
1211 | /* | |
1212 | * Group doesn't exist or user not in group list, check the group ID | |
1213 | * against the user's group ID... | |
1214 | */ | |
1215 | ||
36374693 | 1216 | if (user && groupid == user->pw_gid) |
ef416fc2 | 1217 | return (1); |
1218 | ||
bd7854cb | 1219 | #ifdef HAVE_MBR_UID_TO_UUID |
1220 | /* | |
d4874933 | 1221 | * Check group membership through macOS membership API... |
bd7854cb | 1222 | */ |
1223 | ||
dd1abb6b | 1224 | if (user && !mbr_uid_to_uuid(user->pw_uid, useruuid)) |
c9fc04c6 | 1225 | { |
36374693 | 1226 | if (groupid != (gid_t)-1) |
8922323b MS |
1227 | { |
1228 | /* | |
1229 | * Map group name to UUID and check membership... | |
1230 | */ | |
c9fc04c6 | 1231 | |
36374693 | 1232 | if (!mbr_gid_to_uuid(groupid, groupuuid)) |
8922323b MS |
1233 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1234 | if (is_member) | |
1235 | return (1); | |
1236 | } | |
1237 | else if (groupname[0] == '#') | |
1238 | { | |
1239 | /* | |
1240 | * Use UUID directly and check for equality (user UUID) and | |
1241 | * membership (group UUID)... | |
1242 | */ | |
1243 | ||
1244 | if (!uuid_parse((char *)groupname + 1, groupuuid)) | |
1245 | { | |
1246 | if (!uuid_compare(useruuid, groupuuid)) | |
c9fc04c6 | 1247 | return (1); |
8922323b MS |
1248 | else if (!mbr_check_membership(useruuid, groupuuid, &is_member)) |
1249 | if (is_member) | |
1250 | return (1); | |
1251 | } | |
1252 | ||
1253 | return (0); | |
1254 | } | |
1255 | } | |
1256 | else if (groupname[0] == '#') | |
1257 | return (0); | |
bd7854cb | 1258 | #endif /* HAVE_MBR_UID_TO_UUID */ |
1259 | ||
ef416fc2 | 1260 | /* |
1261 | * If we get this far, then the user isn't part of the named group... | |
1262 | */ | |
1263 | ||
1264 | return (0); | |
1265 | } | |
1266 | ||
1267 | ||
1268 | /* | |
1269 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1270 | */ | |
1271 | ||
1272 | cupsd_location_t * /* O - New location */ | |
1273 | cupsdCopyLocation( | |
10d09e33 | 1274 | cupsd_location_t *loc) /* I - Original location */ |
ef416fc2 | 1275 | { |
ef416fc2 | 1276 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 1277 | |
1278 | ||
ef416fc2 | 1279 | /* |
10d09e33 | 1280 | * Make a copy of the original location... |
ef416fc2 | 1281 | */ |
1282 | ||
10d09e33 | 1283 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 1284 | return (NULL); |
1285 | ||
ef416fc2 | 1286 | /* |
1287 | * Copy the information from the original location to the new one. | |
1288 | */ | |
1289 | ||
10d09e33 MS |
1290 | if (!loc) |
1291 | return (temp); | |
ef416fc2 | 1292 | |
10d09e33 MS |
1293 | if (loc->location) |
1294 | temp->location = _cupsStrAlloc(loc->location); | |
ef416fc2 | 1295 | |
d2ff4622 | 1296 | temp->length = loc->length; |
10d09e33 MS |
1297 | temp->limit = loc->limit; |
1298 | temp->order_type = loc->order_type; | |
1299 | temp->type = loc->type; | |
1300 | temp->level = loc->level; | |
1301 | temp->satisfy = loc->satisfy; | |
1302 | temp->encryption = loc->encryption; | |
1303 | ||
1304 | if (loc->names) | |
1305 | { | |
1306 | if ((temp->names = cupsArrayDup(loc->names)) == NULL) | |
ef416fc2 | 1307 | { |
1308 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1309 | "Unable to allocate memory for %d names: %s", |
1310 | cupsArrayCount(loc->names), strerror(errno)); | |
bd7854cb | 1311 | |
10d09e33 | 1312 | cupsdFreeLocation(temp); |
ef416fc2 | 1313 | return (NULL); |
1314 | } | |
ef416fc2 | 1315 | } |
1316 | ||
10d09e33 | 1317 | if (loc->allow) |
ef416fc2 | 1318 | { |
1319 | /* | |
1320 | * Copy allow rules... | |
1321 | */ | |
1322 | ||
10d09e33 | 1323 | if ((temp->allow = cupsArrayDup(loc->allow)) == NULL) |
ef416fc2 | 1324 | { |
1325 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1326 | "Unable to allocate memory for %d allow rules: %s", |
1327 | cupsArrayCount(loc->allow), strerror(errno)); | |
1328 | cupsdFreeLocation(temp); | |
ef416fc2 | 1329 | return (NULL); |
1330 | } | |
ef416fc2 | 1331 | } |
1332 | ||
10d09e33 | 1333 | if (loc->deny) |
ef416fc2 | 1334 | { |
1335 | /* | |
1336 | * Copy deny rules... | |
1337 | */ | |
1338 | ||
10d09e33 | 1339 | if ((temp->deny = cupsArrayDup(loc->deny)) == NULL) |
ef416fc2 | 1340 | { |
1341 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
10d09e33 MS |
1342 | "Unable to allocate memory for %d deny rules: %s", |
1343 | cupsArrayCount(loc->deny), strerror(errno)); | |
1344 | cupsdFreeLocation(temp); | |
ef416fc2 | 1345 | return (NULL); |
1346 | } | |
ef416fc2 | 1347 | } |
1348 | ||
1349 | return (temp); | |
1350 | } | |
1351 | ||
1352 | ||
1353 | /* | |
1354 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1355 | */ | |
1356 | ||
1357 | void | |
1358 | cupsdDeleteAllLocations(void) | |
1359 | { | |
ef416fc2 | 1360 | /* |
10d09e33 | 1361 | * Free the location array, which will free all of the locations... |
ef416fc2 | 1362 | */ |
1363 | ||
bd7854cb | 1364 | cupsArrayDelete(Locations); |
1365 | Locations = NULL; | |
ef416fc2 | 1366 | } |
1367 | ||
1368 | ||
ef416fc2 | 1369 | /* |
1370 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1371 | */ | |
1372 | ||
1373 | cupsd_location_t * /* O - Location that matches */ | |
1374 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1375 | http_state_t state) /* I - HTTP state/request */ | |
1376 | { | |
ef416fc2 | 1377 | char uri[HTTP_MAX_URI], |
1378 | /* URI in request... */ | |
1379 | *uriptr; /* Pointer into URI */ | |
1380 | cupsd_location_t *loc, /* Current location */ | |
1381 | *best; /* Best match for location so far */ | |
7e86f2f6 | 1382 | size_t bestlen; /* Length of best match */ |
ef416fc2 | 1383 | int limit; /* Limit field */ |
5bd77a73 | 1384 | static const int limits[] = /* Map http_status_t to CUPSD_AUTH_LIMIT_xyz */ |
ef416fc2 | 1385 | { |
5bd77a73 MS |
1386 | CUPSD_AUTH_LIMIT_ALL, |
1387 | CUPSD_AUTH_LIMIT_OPTIONS, | |
1388 | CUPSD_AUTH_LIMIT_GET, | |
1389 | CUPSD_AUTH_LIMIT_GET, | |
1390 | CUPSD_AUTH_LIMIT_HEAD, | |
1391 | CUPSD_AUTH_LIMIT_POST, | |
1392 | CUPSD_AUTH_LIMIT_POST, | |
1393 | CUPSD_AUTH_LIMIT_POST, | |
1394 | CUPSD_AUTH_LIMIT_PUT, | |
1395 | CUPSD_AUTH_LIMIT_PUT, | |
1396 | CUPSD_AUTH_LIMIT_DELETE, | |
1397 | CUPSD_AUTH_LIMIT_TRACE, | |
1398 | CUPSD_AUTH_LIMIT_ALL, | |
d2ff4622 MS |
1399 | CUPSD_AUTH_LIMIT_ALL, |
1400 | CUPSD_AUTH_LIMIT_ALL, | |
5bd77a73 | 1401 | CUPSD_AUTH_LIMIT_ALL |
ef416fc2 | 1402 | }; |
1403 | ||
1404 | ||
1405 | /* | |
1406 | * First copy the connection URI to a local string so we have drop | |
1407 | * any .ppd extension from the pathname in /printers or /classes | |
1408 | * URIs... | |
1409 | */ | |
1410 | ||
1411 | strlcpy(uri, path, sizeof(uri)); | |
1412 | ||
c26ceab0 MS |
1413 | if ((uriptr = strchr(uri, '?')) != NULL) |
1414 | *uriptr = '\0'; /* Drop trailing query string */ | |
1415 | ||
1416 | if ((uriptr = uri + strlen(uri) - 1) > uri && *uriptr == '/') | |
1417 | *uriptr = '\0'; /* Remove trailing '/' */ | |
1418 | ||
ef416fc2 | 1419 | if (!strncmp(uri, "/printers/", 10) || |
1420 | !strncmp(uri, "/classes/", 9)) | |
1421 | { | |
1422 | /* | |
1423 | * Check if the URI has .ppd on the end... | |
1424 | */ | |
1425 | ||
1426 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1427 | ||
1428 | if (!strcmp(uriptr, ".ppd")) | |
1429 | *uriptr = '\0'; | |
1430 | } | |
1431 | ||
ef416fc2 | 1432 | /* |
1433 | * Loop through the list of locations to find a match... | |
1434 | */ | |
1435 | ||
1436 | limit = limits[state]; | |
1437 | best = NULL; | |
1438 | bestlen = 0; | |
1439 | ||
ffe32673 | 1440 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri=\"%s\", limit=%x...", uri, limit); |
d2ff4622 MS |
1441 | |
1442 | ||
bd7854cb | 1443 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1444 | loc; | |
1445 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1446 | { |
d2ff4622 | 1447 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s(%d) Limit %x", loc->location ? loc->location : "(null)", (int)loc->length, loc->limit); |
ef416fc2 | 1448 | |
1449 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1450 | { | |
1451 | /* | |
1452 | * Use case-insensitive comparison for queue names... | |
1453 | */ | |
1454 | ||
e1d6a774 | 1455 | if (loc->length > bestlen && loc->location && |
88f9aafc | 1456 | !_cups_strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1457 | loc->location[0] == '/' && |
1458 | (limit & loc->limit) != 0) | |
1459 | { | |
1460 | best = loc; | |
1461 | bestlen = loc->length; | |
1462 | } | |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | /* | |
1467 | * Use case-sensitive comparison for other URIs... | |
1468 | */ | |
1469 | ||
e1d6a774 | 1470 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1471 | !strncmp(uri, loc->location, loc->length) && |
1472 | loc->location[0] == '/' && | |
1473 | (limit & loc->limit) != 0) | |
1474 | { | |
1475 | best = loc; | |
1476 | bestlen = loc->length; | |
1477 | } | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | /* | |
1482 | * Return the match, if any... | |
1483 | */ | |
1484 | ||
ffe32673 | 1485 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best=%s", best ? best->location : "NONE"); |
ef416fc2 | 1486 | |
1487 | return (best); | |
1488 | } | |
1489 | ||
1490 | ||
1491 | /* | |
1492 | * 'cupsdFindLocation()' - Find the named location. | |
1493 | */ | |
1494 | ||
1495 | cupsd_location_t * /* O - Location that matches */ | |
1496 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1497 | { | |
bd7854cb | 1498 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1499 | |
1500 | ||
bd7854cb | 1501 | key.location = (char *)location; |
ef416fc2 | 1502 | |
bd7854cb | 1503 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1504 | } |
1505 | ||
1506 | ||
10d09e33 MS |
1507 | /* |
1508 | * 'cupsdFreeLocation()' - Free all memory used by a location. | |
1509 | */ | |
1510 | ||
1511 | void | |
1512 | cupsdFreeLocation(cupsd_location_t *loc)/* I - Location to free */ | |
1513 | { | |
1514 | cupsArrayDelete(loc->names); | |
1515 | cupsArrayDelete(loc->allow); | |
1516 | cupsArrayDelete(loc->deny); | |
1517 | ||
1518 | _cupsStrFree(loc->location); | |
1519 | free(loc); | |
1520 | } | |
1521 | ||
1522 | ||
ef416fc2 | 1523 | /* |
1524 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1525 | */ | |
1526 | ||
1527 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1528 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1529 | const char *owner)/* I - Owner of object */ | |
1530 | { | |
10d09e33 | 1531 | int i, /* Looping vars */ |
2fb76298 MS |
1532 | auth, /* Authorization status */ |
1533 | type; /* Type of authentication */ | |
5ec1fd3d MS |
1534 | http_addr_t *hostaddr = httpGetAddress(con->http); |
1535 | /* Client address */ | |
1536 | const char *hostname = httpGetHostname(con->http, NULL, 0); | |
1537 | /* Client hostname */ | |
ef416fc2 | 1538 | unsigned address[4]; /* Authorization address */ |
1539 | cupsd_location_t *best; /* Best match for location so far */ | |
7e86f2f6 | 1540 | size_t hostlen; /* Length of hostname */ |
10d09e33 MS |
1541 | char *name, /* Current username */ |
1542 | username[256], /* Username to authorize */ | |
db1f069b MS |
1543 | ownername[256], /* Owner name to authorize */ |
1544 | *ptr; /* Pointer into username */ | |
ef416fc2 | 1545 | struct passwd *pw; /* User password data */ |
1546 | static const char * const levels[] = /* Auth levels */ | |
1547 | { | |
1548 | "ANON", | |
1549 | "USER", | |
1550 | "GROUP" | |
1551 | }; | |
1552 | static const char * const types[] = /* Auth types */ | |
1553 | { | |
2fb76298 MS |
1554 | "None", |
1555 | "Basic", | |
2fb76298 | 1556 | "Negotiate" |
ef416fc2 | 1557 | }; |
1558 | ||
1559 | ||
ffe32673 | 1560 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", con->uri, con->best, con->best ? con->best->location ? con->best->location : "(null)" : ""); |
fa73b229 | 1561 | if (owner) |
ffe32673 | 1562 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: owner=\"%s\"", owner); |
ef416fc2 | 1563 | |
1564 | /* | |
1565 | * If there is no "best" authentication rule for this request, then | |
1566 | * access is allowed from the local system and denied from other | |
1567 | * addresses... | |
1568 | */ | |
1569 | ||
1570 | if (!con->best) | |
1571 | { | |
5ec1fd3d MS |
1572 | if (httpAddrLocalhost(httpGetAddress(con->http)) || |
1573 | !strcmp(hostname, ServerName) || | |
1574 | cupsArrayFind(ServerAlias, (void *)hostname)) | |
ef416fc2 | 1575 | return (HTTP_OK); |
1576 | else | |
1577 | return (HTTP_FORBIDDEN); | |
1578 | } | |
1579 | ||
1580 | best = con->best; | |
1581 | ||
5bd77a73 | 1582 | if ((type = best->type) == CUPSD_AUTH_DEFAULT) |
dcb445bc | 1583 | type = cupsdDefaultAuthType(); |
2fb76298 | 1584 | |
ffe32673 | 1585 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: level=CUPSD_AUTH_%s, type=%s, satisfy=CUPSD_AUTH_SATISFY_%s, num_names=%d", levels[best->level], types[type], best->satisfy ? "ANY" : "ALL", cupsArrayCount(best->names)); |
ef416fc2 | 1586 | |
5bd77a73 | 1587 | if (best->limit == CUPSD_AUTH_LIMIT_IPP) |
ffe32673 | 1588 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", best->op, ippOpString(best->op)); |
ef416fc2 | 1589 | |
1590 | /* | |
1591 | * Check host/ip-based accesses... | |
1592 | */ | |
1593 | ||
1594 | #ifdef AF_INET6 | |
5ec1fd3d | 1595 | if (httpAddrFamily(hostaddr) == AF_INET6) |
ef416fc2 | 1596 | { |
1597 | /* | |
1598 | * Copy IPv6 address... | |
1599 | */ | |
1600 | ||
5ec1fd3d MS |
1601 | address[0] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[0]); |
1602 | address[1] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1603 | address[2] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1604 | address[3] = ntohl(hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
ef416fc2 | 1605 | } |
1606 | else | |
1607 | #endif /* AF_INET6 */ | |
996acce8 | 1608 | if (con->http->hostaddr->addr.sa_family == AF_INET) |
ef416fc2 | 1609 | { |
1610 | /* | |
1611 | * Copy IPv4 address... | |
1612 | */ | |
1613 | ||
1614 | address[0] = 0; | |
1615 | address[1] = 0; | |
1616 | address[2] = 0; | |
5ec1fd3d | 1617 | address[3] = ntohl(hostaddr->ipv4.sin_addr.s_addr); |
ef416fc2 | 1618 | } |
1619 | else | |
1620 | memset(address, 0, sizeof(address)); | |
1621 | ||
5ec1fd3d | 1622 | hostlen = strlen(hostname); |
ef416fc2 | 1623 | |
5ec1fd3d | 1624 | auth = cupsdCheckAccess(address, hostname, hostlen, best) |
5bd77a73 | 1625 | ? CUPSD_AUTH_ALLOW : CUPSD_AUTH_DENY; |
ef416fc2 | 1626 | |
ffe32673 | 1627 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=CUPSD_AUTH_%s...", auth ? "DENY" : "ALLOW"); |
ef416fc2 | 1628 | |
5bd77a73 | 1629 | if (auth == CUPSD_AUTH_DENY && best->satisfy == CUPSD_AUTH_SATISFY_ALL) |
ef416fc2 | 1630 | return (HTTP_FORBIDDEN); |
1631 | ||
1632 | #ifdef HAVE_SSL | |
1633 | /* | |
1634 | * See if encryption is required... | |
1635 | */ | |
1636 | ||
996acce8 | 1637 | if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http->tls && |
5ec1fd3d MS |
1638 | _cups_strcasecmp(hostname, "localhost") && |
1639 | !httpAddrLocalhost(hostaddr) && | |
5bd77a73 | 1640 | best->satisfy == CUPSD_AUTH_SATISFY_ALL) && |
c8fef167 | 1641 | !(type == CUPSD_AUTH_NEGOTIATE || |
dcb445bc MS |
1642 | (type == CUPSD_AUTH_NONE && |
1643 | cupsdDefaultAuthType() == CUPSD_AUTH_NEGOTIATE))) | |
ef416fc2 | 1644 | { |
355e94dc | 1645 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1646 | "cupsdIsAuthorized: Need upgrade to TLS..."); |
1647 | return (HTTP_UPGRADE_REQUIRED); | |
1648 | } | |
1649 | #endif /* HAVE_SSL */ | |
1650 | ||
1651 | /* | |
1652 | * Now see what access level is required... | |
1653 | */ | |
1654 | ||
5bd77a73 | 1655 | if (best->level == CUPSD_AUTH_ANON || /* Anonymous access - allow it */ |
10d09e33 | 1656 | (type == CUPSD_AUTH_NONE && cupsArrayCount(best->names) == 0)) |
ef416fc2 | 1657 | return (HTTP_OK); |
1658 | ||
5bd77a73 MS |
1659 | if (!con->username[0] && type == CUPSD_AUTH_NONE && |
1660 | best->limit == CUPSD_AUTH_LIMIT_IPP) | |
ef416fc2 | 1661 | { |
1662 | /* | |
1663 | * Check for unauthenticated username... | |
1664 | */ | |
1665 | ||
1666 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
1667 | ||
1668 | ||
1669 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
1670 | if (attr) | |
1671 | { | |
355e94dc | 1672 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
ef416fc2 | 1673 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", |
1674 | attr->values[0].string.text); | |
db1f069b | 1675 | strlcpy(username, attr->values[0].string.text, sizeof(username)); |
ef416fc2 | 1676 | } |
5bd77a73 | 1677 | else if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
ef416fc2 | 1678 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1679 | else | |
1680 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1681 | } | |
fa73b229 | 1682 | else |
1683 | { | |
355e94dc | 1684 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"", |
fa73b229 | 1685 | con->username); |
1686 | ||
f7deaa1a | 1687 | #ifdef HAVE_AUTHORIZATION_H |
1688 | if (!con->username[0] && !con->authref) | |
1689 | #else | |
fa73b229 | 1690 | if (!con->username[0]) |
f7deaa1a | 1691 | #endif /* HAVE_AUTHORIZATION_H */ |
fa73b229 | 1692 | { |
5bd77a73 | 1693 | if (best->satisfy == CUPSD_AUTH_SATISFY_ALL || auth == CUPSD_AUTH_DENY) |
fa73b229 | 1694 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1695 | else | |
1696 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1697 | } | |
1698 | ||
eac3a0a0 | 1699 | |
5bd77a73 | 1700 | if (con->type != type && type != CUPSD_AUTH_NONE && |
eac3a0a0 MS |
1701 | #ifdef HAVE_GSSAPI |
1702 | (type != CUPSD_AUTH_NEGOTIATE || con->gss_uid <= 0) && | |
1703 | #endif /* HAVE_GSSAPI */ | |
e0660879 | 1704 | con->type != CUPSD_AUTH_BASIC) |
2fb76298 | 1705 | { |
e0660879 | 1706 | cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s.", |
2fb76298 MS |
1707 | types[con->type], types[type]); |
1708 | ||
1709 | return (HTTP_UNAUTHORIZED); | |
1710 | } | |
1711 | ||
db1f069b | 1712 | strlcpy(username, con->username, sizeof(username)); |
fa73b229 | 1713 | } |
ef416fc2 | 1714 | |
1715 | /* | |
fa73b229 | 1716 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 1717 | * access... (root always matches) |
1718 | */ | |
1719 | ||
fa73b229 | 1720 | if (!strcmp(username, "root")) |
ef416fc2 | 1721 | return (HTTP_OK); |
1722 | ||
db1f069b MS |
1723 | /* |
1724 | * Strip any @domain or @KDC from the username and owner... | |
1725 | */ | |
1726 | ||
1727 | if ((ptr = strchr(username, '@')) != NULL) | |
1728 | *ptr = '\0'; | |
1729 | ||
1730 | if (owner) | |
1731 | { | |
1732 | strlcpy(ownername, owner, sizeof(ownername)); | |
1733 | ||
1734 | if ((ptr = strchr(ownername, '@')) != NULL) | |
1735 | *ptr = '\0'; | |
1736 | } | |
1737 | else | |
1738 | ownername[0] = '\0'; | |
1739 | ||
ef416fc2 | 1740 | /* |
1741 | * Get the user info... | |
1742 | */ | |
1743 | ||
f7deaa1a | 1744 | if (username[0]) |
1745 | { | |
1746 | pw = getpwnam(username); | |
1747 | endpwent(); | |
1748 | } | |
1749 | else | |
1750 | pw = NULL; | |
ef416fc2 | 1751 | |
5bd77a73 | 1752 | if (best->level == CUPSD_AUTH_USER) |
ef416fc2 | 1753 | { |
1754 | /* | |
1755 | * If there are no names associated with this location, then | |
1756 | * any valid user is OK... | |
1757 | */ | |
1758 | ||
10d09e33 | 1759 | if (cupsArrayCount(best->names) == 0) |
ef416fc2 | 1760 | return (HTTP_OK); |
1761 | ||
1762 | /* | |
1763 | * Otherwise check the user list and return OK if this user is | |
1764 | * allowed... | |
1765 | */ | |
1766 | ||
ffe32673 | 1767 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: Checking user membership..."); |
ef416fc2 | 1768 | |
f7deaa1a | 1769 | #ifdef HAVE_AUTHORIZATION_H |
1770 | /* | |
1771 | * If an authorization reference was supplied it must match a right name... | |
1772 | */ | |
1773 | ||
1774 | if (con->authref) | |
1775 | { | |
10d09e33 MS |
1776 | for (name = (char *)cupsArrayFirst(best->names); |
1777 | name; | |
1778 | name = (char *)cupsArrayNext(best->names)) | |
f7deaa1a | 1779 | { |
88f9aafc | 1780 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9) && check_authref(con, name + 9)) |
f7deaa1a | 1781 | return (HTTP_OK); |
88f9aafc | 1782 | else if (!_cups_strcasecmp(name, "@SYSTEM") && SystemGroupAuthKey && |
f7deaa1a | 1783 | check_authref(con, SystemGroupAuthKey)) |
1784 | return (HTTP_OK); | |
1785 | } | |
1786 | ||
ee571f26 | 1787 | return (HTTP_FORBIDDEN); |
f7deaa1a | 1788 | } |
1789 | #endif /* HAVE_AUTHORIZATION_H */ | |
1790 | ||
10d09e33 MS |
1791 | for (name = (char *)cupsArrayFirst(best->names); |
1792 | name; | |
1793 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 1794 | { |
88f9aafc MS |
1795 | if (!_cups_strcasecmp(name, "@OWNER") && owner && |
1796 | !_cups_strcasecmp(username, ownername)) | |
ef416fc2 | 1797 | return (HTTP_OK); |
88f9aafc | 1798 | else if (!_cups_strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 1799 | { |
10d09e33 MS |
1800 | for (i = 0; i < NumSystemGroups; i ++) |
1801 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 1802 | return (HTTP_OK); |
1803 | } | |
10d09e33 | 1804 | else if (name[0] == '@') |
ef416fc2 | 1805 | { |
10d09e33 | 1806 | if (cupsdCheckGroup(username, pw, name + 1)) |
ef416fc2 | 1807 | return (HTTP_OK); |
1808 | } | |
88f9aafc | 1809 | else if (!_cups_strcasecmp(username, name)) |
ef416fc2 | 1810 | return (HTTP_OK); |
1811 | } | |
1812 | ||
85dda01c | 1813 | return (con->username[0] ? HTTP_FORBIDDEN : HTTP_UNAUTHORIZED); |
ef416fc2 | 1814 | } |
1815 | ||
1816 | /* | |
1817 | * Check to see if this user is in any of the named groups... | |
1818 | */ | |
1819 | ||
ffe32673 | 1820 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: Checking group membership..."); |
ef416fc2 | 1821 | |
1822 | /* | |
1823 | * Check to see if this user is in any of the named groups... | |
1824 | */ | |
1825 | ||
10d09e33 MS |
1826 | for (name = (char *)cupsArrayFirst(best->names); |
1827 | name; | |
1828 | name = (char *)cupsArrayNext(best->names)) | |
ef416fc2 | 1829 | { |
ffe32673 | 1830 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: Checking group \"%s\" membership...", name); |
ef416fc2 | 1831 | |
88f9aafc | 1832 | if (!_cups_strcasecmp(name, "@SYSTEM")) |
ef416fc2 | 1833 | { |
10d09e33 MS |
1834 | for (i = 0; i < NumSystemGroups; i ++) |
1835 | if (cupsdCheckGroup(username, pw, SystemGroups[i])) | |
ef416fc2 | 1836 | return (HTTP_OK); |
1837 | } | |
10d09e33 | 1838 | else if (cupsdCheckGroup(username, pw, name)) |
ef416fc2 | 1839 | return (HTTP_OK); |
1840 | } | |
1841 | ||
1842 | /* | |
1843 | * The user isn't part of the specified group, so deny access... | |
1844 | */ | |
1845 | ||
ffe32673 | 1846 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: User not in group(s)."); |
ef416fc2 | 1847 | |
85dda01c | 1848 | return (con->username[0] ? HTTP_FORBIDDEN : HTTP_UNAUTHORIZED); |
ef416fc2 | 1849 | } |
1850 | ||
1851 | ||
1852 | /* | |
10d09e33 MS |
1853 | * 'cupsdNewLocation()' - Create a new location for authorization. |
1854 | * | |
1855 | * Note: Still need to call cupsdAddLocation() to add it to the list of global | |
1856 | * locations. | |
ef416fc2 | 1857 | */ |
1858 | ||
10d09e33 MS |
1859 | cupsd_location_t * /* O - Pointer to new location record */ |
1860 | cupsdNewLocation(const char *location) /* I - Location path */ | |
ef416fc2 | 1861 | { |
10d09e33 | 1862 | cupsd_location_t *temp; /* New location */ |
ef416fc2 | 1863 | |
1864 | ||
1865 | /* | |
10d09e33 | 1866 | * Try to allocate memory for the new location. |
ef416fc2 | 1867 | */ |
1868 | ||
10d09e33 | 1869 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) |
ef416fc2 | 1870 | return (NULL); |
1871 | ||
1872 | /* | |
10d09e33 | 1873 | * Initialize the record and copy the name over... |
ef416fc2 | 1874 | */ |
1875 | ||
10d09e33 MS |
1876 | if ((temp->location = _cupsStrAlloc(location)) == NULL) |
1877 | { | |
1878 | free(temp); | |
ef416fc2 | 1879 | return (NULL); |
10d09e33 | 1880 | } |
ef416fc2 | 1881 | |
10d09e33 | 1882 | temp->length = strlen(temp->location); |
ef416fc2 | 1883 | |
1884 | /* | |
10d09e33 | 1885 | * Return the new record... |
ef416fc2 | 1886 | */ |
1887 | ||
ef416fc2 | 1888 | return (temp); |
1889 | } | |
1890 | ||
1891 | ||
f7deaa1a | 1892 | #ifdef HAVE_AUTHORIZATION_H |
1893 | /* | |
1894 | * 'check_authref()' - Check if an authorization services reference has the | |
1895 | * supplied right. | |
1896 | */ | |
1897 | ||
1898 | static int /* O - 1 if right is valid, 0 otherwise */ | |
1899 | check_authref(cupsd_client_t *con, /* I - Connection */ | |
1900 | const char *right) /* I - Right name */ | |
1901 | { | |
1902 | OSStatus status; /* OS Status */ | |
1903 | AuthorizationItem authright; /* Authorization right */ | |
1904 | AuthorizationRights authrights; /* Authorization rights */ | |
1905 | AuthorizationFlags authflags; /* Authorization flags */ | |
1906 | ||
1907 | ||
1908 | /* | |
1909 | * Check to see if the user is allowed to perform the task... | |
1910 | */ | |
1911 | ||
1912 | if (!con->authref) | |
1913 | return (0); | |
1914 | ||
1915 | authright.name = right; | |
1916 | authright.valueLength = 0; | |
1917 | authright.value = NULL; | |
1918 | authright.flags = 0; | |
1919 | ||
1920 | authrights.count = 1; | |
1921 | authrights.items = &authright; | |
1922 | ||
c8fef167 | 1923 | authflags = kAuthorizationFlagDefaults | |
f7deaa1a | 1924 | kAuthorizationFlagExtendRights; |
1925 | ||
c8fef167 MS |
1926 | if ((status = AuthorizationCopyRights(con->authref, &authrights, |
1927 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 1928 | authflags, NULL)) != 0) |
1929 | { | |
1930 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1931 | "AuthorizationCopyRights(\"%s\") returned %d (%s)", | |
1932 | authright.name, (int)status, cssmErrorString(status)); | |
1933 | return (0); | |
1934 | } | |
1935 | ||
ffe32673 | 1936 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "AuthorizationCopyRights(\"%s\") succeeded.", authright.name); |
f7deaa1a | 1937 | |
1938 | return (1); | |
1939 | } | |
1940 | #endif /* HAVE_AUTHORIZATION_H */ | |
1941 | ||
1942 | ||
bd7854cb | 1943 | /* |
1944 | * 'compare_locations()' - Compare two locations. | |
1945 | */ | |
1946 | ||
1947 | static int /* O - Result of comparison */ | |
1948 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
1949 | cupsd_location_t *b) /* I - Second location */ | |
1950 | { | |
1951 | return (strcmp(b->location, a->location)); | |
1952 | } | |
1953 | ||
1954 | ||
10d09e33 MS |
1955 | /* |
1956 | * 'copy_authmask()' - Copy function for auth masks. | |
1957 | */ | |
1958 | ||
1959 | static cupsd_authmask_t * /* O - New auth mask */ | |
1960 | copy_authmask(cupsd_authmask_t *mask, /* I - Existing auth mask */ | |
1961 | void *data) /* I - User data (unused) */ | |
1962 | { | |
1963 | cupsd_authmask_t *temp; /* New auth mask */ | |
1964 | ||
1965 | ||
1966 | (void)data; | |
1967 | ||
1968 | if ((temp = malloc(sizeof(cupsd_authmask_t))) != NULL) | |
1969 | { | |
1970 | memcpy(temp, mask, sizeof(cupsd_authmask_t)); | |
1971 | ||
1972 | if (temp->type == CUPSD_AUTH_NAME || temp->type == CUPSD_AUTH_INTERFACE) | |
1973 | { | |
1974 | /* | |
1975 | * Make a copy of the name... | |
1976 | */ | |
1977 | ||
1978 | if ((temp->mask.name.name = _cupsStrAlloc(temp->mask.name.name)) == NULL) | |
1979 | { | |
1980 | /* | |
1981 | * Failed to make copy... | |
1982 | */ | |
1983 | ||
1984 | free(temp); | |
1985 | temp = NULL; | |
1986 | } | |
1987 | } | |
1988 | } | |
1989 | ||
1990 | return (temp); | |
1991 | } | |
1992 | ||
1993 | ||
5a1d7a17 | 1994 | #if !HAVE_LIBPAM |
ef416fc2 | 1995 | /* |
1996 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
1997 | * as needed. | |
1998 | */ | |
1999 | ||
2000 | static char * /* O - Encrypted password */ | |
2001 | cups_crypt(const char *pw, /* I - Password string */ | |
2002 | const char *salt) /* I - Salt (key) string */ | |
2003 | { | |
bd7854cb | 2004 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 2005 | { |
2006 | /* | |
2007 | * Use MD5 passwords without the benefit of PAM; this is for | |
2008 | * Slackware Linux, and the algorithm was taken from the | |
2009 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
2010 | */ | |
2011 | ||
2012 | int i; /* Looping var */ | |
2013 | unsigned long n; /* Output number */ | |
2014 | int pwlen; /* Length of password string */ | |
2015 | const char *salt_end; /* End of "salt" data for MD5 */ | |
2016 | char *ptr; /* Pointer into result string */ | |
2017 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
2018 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
2019 | unsigned char digest[16]; /* MD5 digest result */ | |
2020 | static char result[120]; /* Final password string */ | |
2021 | ||
2022 | ||
2023 | /* | |
2024 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
2025 | * Get a maximum of 8 characters of salt data after $1$... | |
2026 | */ | |
2027 | ||
2028 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
2029 | if (*salt_end == '$') | |
2030 | break; | |
2031 | ||
2032 | /* | |
2033 | * Compute the MD5 sum we need... | |
2034 | */ | |
2035 | ||
2036 | pwlen = strlen(pw); | |
2037 | ||
757d2cad | 2038 | _cupsMD5Init(&state); |
2039 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
2040 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 2041 | |
757d2cad | 2042 | _cupsMD5Init(&state2); |
2043 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2044 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
2045 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
2046 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 2047 | |
2048 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 2049 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 2050 | |
2051 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 2052 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 2053 | |
757d2cad | 2054 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2055 | |
2056 | for (i = 0; i < 1000; i ++) | |
2057 | { | |
757d2cad | 2058 | _cupsMD5Init(&state); |
ef416fc2 | 2059 | |
2060 | if (i & 1) | |
757d2cad | 2061 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2062 | else |
757d2cad | 2063 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2064 | |
2065 | if (i % 3) | |
757d2cad | 2066 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 2067 | |
2068 | if (i % 7) | |
757d2cad | 2069 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2070 | |
2071 | if (i & 1) | |
757d2cad | 2072 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 2073 | else |
757d2cad | 2074 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 2075 | |
757d2cad | 2076 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 2077 | } |
2078 | ||
2079 | /* | |
2080 | * Copy the final sum to the result string and return... | |
2081 | */ | |
2082 | ||
7d5824d6 | 2083 | memcpy(result, salt, (size_t)(salt_end - salt)); |
ef416fc2 | 2084 | ptr = result + (salt_end - salt); |
2085 | *ptr++ = '$'; | |
2086 | ||
2087 | for (i = 0; i < 5; i ++, ptr += 4) | |
2088 | { | |
7d5824d6 | 2089 | n = ((((unsigned)digest[i] << 8) | (unsigned)digest[i + 6]) << 8); |
ef416fc2 | 2090 | |
2091 | if (i < 4) | |
7d5824d6 | 2092 | n |= (unsigned)digest[i + 12]; |
ef416fc2 | 2093 | else |
7d5824d6 | 2094 | n |= (unsigned)digest[5]; |
ef416fc2 | 2095 | |
2096 | to64(ptr, n, 4); | |
2097 | } | |
2098 | ||
7d5824d6 | 2099 | to64(ptr, (unsigned)digest[11], 2); |
ef416fc2 | 2100 | ptr += 2; |
2101 | *ptr = '\0'; | |
2102 | ||
2103 | return (result); | |
2104 | } | |
2105 | else | |
2106 | { | |
2107 | /* | |
2108 | * Use the standard crypt() function... | |
2109 | */ | |
2110 | ||
2111 | return (crypt(pw, salt)); | |
2112 | } | |
2113 | } | |
5a1d7a17 | 2114 | #endif /* !HAVE_LIBPAM */ |
ef416fc2 | 2115 | |
2116 | ||
10d09e33 MS |
2117 | /* |
2118 | * 'free_authmask()' - Free function for auth masks. | |
2119 | */ | |
2120 | ||
2121 | static void | |
2122 | free_authmask(cupsd_authmask_t *mask, /* I - Auth mask to free */ | |
2123 | void *data) /* I - User data (unused) */ | |
2124 | { | |
2125 | (void)data; | |
2126 | ||
2127 | if (mask->type == CUPSD_AUTH_NAME || mask->type == CUPSD_AUTH_INTERFACE) | |
2128 | _cupsStrFree(mask->mask.name.name); | |
2129 | ||
2130 | free(mask); | |
2131 | } | |
2132 | ||
2133 | ||
ef416fc2 | 2134 | #if HAVE_LIBPAM |
2135 | /* | |
2136 | * 'pam_func()' - PAM conversation function. | |
2137 | */ | |
2138 | ||
2139 | static int /* O - Success or failure */ | |
2140 | pam_func( | |
2141 | int num_msg, /* I - Number of messages */ | |
2142 | const struct pam_message **msg, /* I - Messages */ | |
2143 | struct pam_response **resp, /* O - Responses */ | |
2144 | void *appdata_ptr) | |
2145 | /* I - Pointer to connection */ | |
2146 | { | |
2147 | int i; /* Looping var */ | |
2148 | struct pam_response *replies; /* Replies */ | |
2149 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2150 | ||
2151 | ||
2152 | /* | |
2153 | * Allocate memory for the responses... | |
2154 | */ | |
2155 | ||
7e86f2f6 | 2156 | if ((replies = malloc(sizeof(struct pam_response) * (size_t)num_msg)) == NULL) |
ef416fc2 | 2157 | return (PAM_CONV_ERR); |
2158 | ||
2159 | /* | |
2160 | * Answer all of the messages... | |
2161 | */ | |
2162 | ||
2163 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2164 | ||
ef416fc2 | 2165 | data = (cupsd_authdata_t *)appdata_ptr; |
ef416fc2 | 2166 | |
2167 | for (i = 0; i < num_msg; i ++) | |
2168 | { | |
2169 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2170 | ||
2171 | switch (msg[i]->msg_style) | |
2172 | { | |
2173 | case PAM_PROMPT_ECHO_ON: | |
2174 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2175 | data->username)); | |
2176 | replies[i].resp_retcode = PAM_SUCCESS; | |
2177 | replies[i].resp = strdup(data->username); | |
2178 | break; | |
2179 | ||
2180 | case PAM_PROMPT_ECHO_OFF: | |
2181 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2182 | data->password)); | |
2183 | replies[i].resp_retcode = PAM_SUCCESS; | |
2184 | replies[i].resp = strdup(data->password); | |
2185 | break; | |
2186 | ||
2187 | case PAM_TEXT_INFO: | |
2188 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2189 | replies[i].resp_retcode = PAM_SUCCESS; | |
2190 | replies[i].resp = NULL; | |
2191 | break; | |
2192 | ||
2193 | case PAM_ERROR_MSG: | |
2194 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2195 | replies[i].resp_retcode = PAM_SUCCESS; | |
2196 | replies[i].resp = NULL; | |
2197 | break; | |
2198 | ||
2199 | default: | |
2200 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2201 | msg[i]->msg_style)); | |
2202 | free(replies); | |
2203 | return (PAM_CONV_ERR); | |
2204 | } | |
2205 | } | |
2206 | ||
2207 | /* | |
2208 | * Return the responses back to PAM... | |
2209 | */ | |
2210 | ||
2211 | *resp = replies; | |
2212 | ||
2213 | return (PAM_SUCCESS); | |
2214 | } | |
5a1d7a17 | 2215 | #else |
ef416fc2 | 2216 | |
2217 | ||
2218 | /* | |
2219 | * 'to64()' - Base64-encode an integer value... | |
2220 | */ | |
2221 | ||
2222 | static void | |
2223 | to64(char *s, /* O - Output string */ | |
2224 | unsigned long v, /* I - Value to encode */ | |
2225 | int n) /* I - Number of digits */ | |
2226 | { | |
2227 | const char *itoa64 = "./0123456789" | |
2228 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2229 | "abcdefghijklmnopqrstuvwxyz"; | |
2230 | ||
2231 | ||
2232 | for (; n > 0; n --, v >>= 6) | |
2233 | *s++ = itoa64[v & 0x3f]; | |
2234 | } | |
2235 | #endif /* HAVE_LIBPAM */ |