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ef416fc2 | 1 | ;/* |
bd7854cb | 2 | * "$Id: auth.c 5083 2006-02-06 02:57:43Z mike $" |
ef416fc2 | 3 | * |
4 | * Authorization routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
6 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. | |
7 | * | |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE.txt" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * Contents: | |
25 | * | |
26 | * cupsdAddLocation() - Add a location for authorization. | |
27 | * cupsdAddName() - Add a name to a location... | |
28 | * cupsdAllowHost() - Add a host name that is allowed to access the | |
29 | * location. | |
30 | * cupsdAllowIP() - Add an IP address or network that is allowed to | |
31 | * access the location. | |
32 | * cupsdCheckAuth() - Check authorization masks. | |
33 | * cupsdCheckGroup() - Check for a user's group membership. | |
34 | * cupsdCopyLocation() - Make a copy of a location... | |
35 | * cupsdDeleteAllLocations() - Free all memory used for location authorization. | |
36 | * cupsdDeleteLocation() - Free all memory used by a location. | |
37 | * cupsdDenyHost() - Add a host name that is not allowed to access the | |
38 | * location. | |
39 | * cupsdDenyIP() - Add an IP address or network that is not allowed | |
40 | * to access the location. | |
41 | * cupsdFindBest() - Find the location entry that best matches the | |
42 | * resource. | |
43 | * cupsdFindLocation() - Find the named location. | |
44 | * cupsdGetMD5Passwd() - Get an MD5 password. | |
45 | * cupsdIsAuthorized() - Check to see if the user is authorized... | |
46 | * add_allow() - Add an allow mask to the location. | |
47 | * add_deny() - Add a deny mask to the location. | |
bd7854cb | 48 | * compare_locations() - Compare two locations. |
ef416fc2 | 49 | * cups_crypt() - Encrypt the password using the DES or MD5 |
50 | * algorithms, as needed. | |
51 | * pam_func() - PAM conversation function. | |
52 | * to64() - Base64-encode an integer value... | |
53 | */ | |
54 | ||
55 | /* | |
56 | * Include necessary headers... | |
57 | */ | |
58 | ||
59 | #include "cupsd.h" | |
60 | #include <grp.h> | |
61 | #ifdef HAVE_SHADOW_H | |
62 | # include <shadow.h> | |
63 | #endif /* HAVE_SHADOW_H */ | |
64 | #ifdef HAVE_CRYPT_H | |
65 | # include <crypt.h> | |
66 | #endif /* HAVE_CRYPT_H */ | |
67 | #if HAVE_LIBPAM | |
68 | # ifdef HAVE_PAM_PAM_APPL_H | |
69 | # include <pam/pam_appl.h> | |
70 | # else | |
71 | # include <security/pam_appl.h> | |
72 | # endif /* HAVE_PAM_PAM_APPL_H */ | |
73 | #endif /* HAVE_LIBPAM */ | |
74 | #ifdef HAVE_USERSEC_H | |
75 | # include <usersec.h> | |
76 | #endif /* HAVE_USERSEC_H */ | |
bd7854cb | 77 | #ifdef HAVE_MEMBERSHIP_H |
78 | # include <membership.h> | |
79 | #endif /* HAVE_MEMBERSHIP_H */ | |
ef416fc2 | 80 | |
81 | ||
82 | /* | |
83 | * Local functions... | |
84 | */ | |
85 | ||
86 | static cupsd_authmask_t *add_allow(cupsd_location_t *loc); | |
87 | static cupsd_authmask_t *add_deny(cupsd_location_t *loc); | |
bd7854cb | 88 | static int compare_locations(cupsd_location_t *a, |
89 | cupsd_location_t *b); | |
ef416fc2 | 90 | #if !HAVE_LIBPAM |
91 | static char *cups_crypt(const char *pw, const char *salt); | |
92 | #endif /* !HAVE_LIBPAM */ | |
93 | #if HAVE_LIBPAM | |
94 | static int pam_func(int, const struct pam_message **, | |
95 | struct pam_response **, void *); | |
96 | #else | |
97 | static void to64(char *s, unsigned long v, int n); | |
98 | #endif /* HAVE_LIBPAM */ | |
99 | ||
100 | ||
101 | /* | |
102 | * Local structures... | |
103 | */ | |
104 | ||
105 | #if HAVE_LIBPAM | |
106 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
107 | { | |
108 | char username[33], /* Username string */ | |
109 | password[33]; /* Password string */ | |
110 | } cupsd_authdata_t; | |
111 | #endif /* HAVE_LIBPAM */ | |
112 | ||
113 | ||
114 | /* | |
115 | * Local globals... | |
116 | */ | |
117 | ||
118 | #if defined(__hpux) && defined(HAVE_LIBPAM) | |
119 | static cupsd_authdata_t *auth_datat; /* Current client being authenticated */ | |
120 | #endif /* __hpux && HAVE_LIBPAM */ | |
121 | ||
122 | ||
123 | /* | |
124 | * 'cupsdAddLocation()' - Add a location for authorization. | |
125 | */ | |
126 | ||
127 | cupsd_location_t * /* O - Pointer to new location record */ | |
128 | cupsdAddLocation(const char *location) /* I - Location path */ | |
129 | { | |
130 | cupsd_location_t *temp; /* New location */ | |
131 | ||
132 | ||
133 | /* | |
bd7854cb | 134 | * Make sure the locations array is created... |
ef416fc2 | 135 | */ |
136 | ||
bd7854cb | 137 | if (!Locations) |
138 | Locations = cupsArrayNew((cups_array_func_t)compare_locations, NULL); | |
ef416fc2 | 139 | |
bd7854cb | 140 | if (!Locations) |
ef416fc2 | 141 | return (NULL); |
142 | ||
bd7854cb | 143 | /* |
144 | * Try to allocate memory for the new location. | |
145 | */ | |
146 | ||
147 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) | |
148 | return (NULL); | |
ef416fc2 | 149 | |
150 | /* | |
151 | * Initialize the record and copy the name over... | |
152 | */ | |
153 | ||
bd7854cb | 154 | temp->location = strdup(location); |
155 | temp->length = strlen(temp->location); | |
ef416fc2 | 156 | |
bd7854cb | 157 | cupsArrayAdd(Locations, temp); |
158 | ||
159 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: added location \'%s\'", | |
ef416fc2 | 160 | location); |
161 | ||
162 | /* | |
163 | * Return the new record... | |
164 | */ | |
165 | ||
166 | return (temp); | |
167 | } | |
168 | ||
169 | ||
170 | /* | |
171 | * 'cupsdAddName()' - Add a name to a location... | |
172 | */ | |
173 | ||
174 | void | |
175 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
176 | char *name) /* I - Name to add */ | |
177 | { | |
178 | char **temp; /* Pointer to names array */ | |
179 | ||
180 | ||
181 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", | |
182 | loc, name); | |
183 | ||
184 | if (loc->num_names == 0) | |
185 | temp = malloc(sizeof(char *)); | |
186 | else | |
187 | temp = realloc(loc->names, (loc->num_names + 1) * sizeof(char *)); | |
188 | ||
189 | if (temp == NULL) | |
190 | { | |
191 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to add name to location %s: %s", | |
192 | loc->location, strerror(errno)); | |
193 | return; | |
194 | } | |
195 | ||
196 | loc->names = temp; | |
197 | ||
198 | if ((temp[loc->num_names] = strdup(name)) == NULL) | |
199 | { | |
200 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
201 | "Unable to duplicate name for location %s: %s", | |
202 | loc->location, strerror(errno)); | |
203 | return; | |
204 | } | |
205 | ||
206 | loc->num_names ++; | |
207 | } | |
208 | ||
209 | ||
210 | /* | |
211 | * 'cupsdAllowHost()' - Add a host name that is allowed to access the location. | |
212 | */ | |
213 | ||
214 | void | |
215 | cupsdAllowHost(cupsd_location_t *loc, /* I - Location to add to */ | |
216 | char *name) /* I - Name of host or domain to add */ | |
217 | { | |
218 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
219 | char ifname[32], /* Interface name */ | |
220 | *ifptr; /* Pointer to end of name */ | |
221 | ||
222 | ||
223 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAllowHost(loc=%p(%s), name=\"%s\")", | |
224 | loc, loc->location, name); | |
225 | ||
226 | if ((temp = add_allow(loc)) == NULL) | |
227 | return; | |
228 | ||
bd7854cb | 229 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 230 | { |
231 | /* | |
232 | * Allow *interface*... | |
233 | */ | |
234 | ||
235 | temp->type = AUTH_INTERFACE; | |
236 | temp->mask.name.name = strdup("*"); | |
237 | temp->mask.name.length = 1; | |
238 | } | |
bd7854cb | 239 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 240 | { |
241 | /* | |
242 | * Allow *interface*... | |
243 | */ | |
244 | ||
245 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
246 | ||
247 | ifptr = ifname + strlen(ifname); | |
248 | ||
249 | if (ifptr[-1] == ')') | |
250 | { | |
251 | ifptr --; | |
252 | *ifptr = '\0'; | |
253 | } | |
254 | ||
255 | temp->type = AUTH_INTERFACE; | |
256 | temp->mask.name.name = strdup(ifname); | |
257 | temp->mask.name.length = ifptr - ifname; | |
258 | } | |
259 | else | |
260 | { | |
261 | /* | |
262 | * Allow name... | |
263 | */ | |
264 | ||
265 | temp->type = AUTH_NAME; | |
266 | temp->mask.name.name = strdup(name); | |
267 | temp->mask.name.length = strlen(name); | |
268 | } | |
269 | } | |
270 | ||
271 | ||
272 | /* | |
273 | * 'cupsdAllowIP()' - Add an IP address or network that is allowed to access | |
274 | * the location. | |
275 | */ | |
276 | ||
277 | void | |
278 | cupsdAllowIP(cupsd_location_t *loc, /* I - Location to add to */ | |
279 | unsigned address[4], /* I - IP address to add */ | |
280 | unsigned netmask[4]) /* I - Netmask of address */ | |
281 | { | |
282 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
283 | ||
284 | ||
285 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
286 | "cupsdAllowIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
287 | loc, loc->location, address[0], address[1], address[2], | |
288 | address[3], netmask[0], netmask[1], netmask[2], | |
289 | netmask[3]); | |
290 | ||
291 | if ((temp = add_allow(loc)) == NULL) | |
292 | return; | |
293 | ||
294 | temp->type = AUTH_IP; | |
295 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
296 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
297 | } | |
298 | ||
299 | ||
300 | /* | |
301 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
302 | */ | |
303 | ||
304 | void | |
305 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
306 | { | |
307 | int type; /* Authentication type */ | |
308 | char *authorization, /* Pointer into Authorization string */ | |
309 | *ptr, /* Pointer into string */ | |
310 | username[65], /* Username string */ | |
311 | password[33]; /* Password string */ | |
312 | const char *localuser; /* Certificate username */ | |
313 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ | |
314 | md5[33], /* MD5 password */ | |
315 | basicmd5[33]; /* MD5 of Basic password */ | |
316 | static const char * const states[] = /* HTTP client states... */ | |
317 | { | |
318 | "WAITING", | |
319 | "OPTIONS", | |
320 | "GET", | |
321 | "GET", | |
322 | "HEAD", | |
323 | "POST", | |
324 | "POST", | |
325 | "POST", | |
326 | "PUT", | |
327 | "PUT", | |
328 | "DELETE", | |
329 | "TRACE", | |
330 | "CLOSE", | |
331 | "STATUS" | |
332 | }; | |
333 | ||
334 | ||
335 | /* | |
336 | * Locate the best matching location so we know what kind of | |
337 | * authentication to expect... | |
338 | */ | |
339 | ||
340 | con->best = cupsdFindBest(con->uri, con->http.state); | |
341 | ||
342 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
343 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
344 | con->uri, con->best, con->best ? con->best->location : ""); | |
345 | ||
346 | if (con->best && con->best->type != AUTH_NONE) | |
347 | type = con->best->type; | |
348 | else | |
349 | type = DefaultAuthType; | |
350 | ||
351 | /* | |
352 | * Decode the Authorization string... | |
353 | */ | |
354 | ||
355 | authorization = con->http.fields[HTTP_FIELD_AUTHORIZATION]; | |
356 | ||
357 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
358 | authorization); | |
359 | ||
360 | username[0] = '\0'; | |
361 | password[0] = '\0'; | |
362 | ||
363 | if (type == AUTH_NONE) | |
364 | { | |
365 | /* | |
366 | * No authorization required, return early... | |
367 | */ | |
368 | ||
369 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
370 | "cupsdAuthorize: No authentication required."); | |
371 | return; | |
372 | } | |
373 | else if (!*authorization) | |
374 | { | |
375 | /* | |
376 | * No authorization data provided, return early... | |
377 | */ | |
378 | ||
379 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
380 | "cupsdAuthorize: No authentication data provided."); | |
381 | return; | |
382 | } | |
383 | else if (!strncmp(authorization, "Local", 5) && | |
384 | !strcasecmp(con->http.hostname, "localhost")) | |
385 | { | |
386 | /* | |
387 | * Get Local certificate authentication data... | |
388 | */ | |
389 | ||
390 | authorization += 5; | |
391 | while (isspace(*authorization)) | |
392 | authorization ++; | |
393 | ||
394 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
395 | strlcpy(username, localuser, sizeof(username)); | |
396 | else | |
397 | { | |
398 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
399 | "cupsdAuthorize: Local authentication certificate not " | |
400 | "found!"); | |
401 | return; | |
402 | } | |
403 | } | |
404 | else if (!strncmp(authorization, "Basic", 5) && | |
405 | (type == AUTH_BASIC || type == AUTH_BASICDIGEST)) | |
406 | { | |
407 | /* | |
408 | * Get the Basic authentication data... | |
409 | */ | |
410 | ||
411 | int userlen; /* Username:password length */ | |
412 | ||
413 | ||
414 | authorization += 5; | |
415 | while (isspace(*authorization)) | |
416 | authorization ++; | |
417 | ||
418 | userlen = sizeof(username); | |
419 | httpDecode64_2(username, &userlen, authorization); | |
420 | ||
421 | /* | |
422 | * Pull the username and password out... | |
423 | */ | |
424 | ||
425 | if ((ptr = strchr(username, ':')) == NULL) | |
426 | { | |
427 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
428 | "cupsdAuthorize: Missing Basic password!"); | |
429 | return; | |
430 | } | |
431 | ||
432 | *ptr++ = '\0'; | |
433 | ||
434 | if (!username[0]) | |
435 | { | |
436 | /* | |
437 | * Username must not be empty... | |
438 | */ | |
439 | ||
440 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
441 | "cupsdAuthorize: Empty Basic username!"); | |
442 | return; | |
443 | } | |
444 | ||
445 | if (!*ptr) | |
446 | { | |
447 | /* | |
448 | * Password must not be empty... | |
449 | */ | |
450 | ||
451 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
452 | "cupsdAuthorize: Empty Basic password!"); | |
453 | return; | |
454 | } | |
455 | ||
456 | strlcpy(password, ptr, sizeof(password)); | |
457 | ||
458 | /* | |
459 | * Validate the username and password... | |
460 | */ | |
461 | ||
462 | switch (type) | |
463 | { | |
464 | case AUTH_BASIC : | |
465 | { | |
466 | #if HAVE_LIBPAM | |
467 | /* | |
468 | * Only use PAM to do authentication. This supports MD5 | |
469 | * passwords, among other things... | |
470 | */ | |
471 | ||
472 | pam_handle_t *pamh; /* PAM authentication handle */ | |
473 | int pamerr; /* PAM error code */ | |
474 | struct pam_conv pamdata;/* PAM conversation data */ | |
475 | cupsd_authdata_t data; /* Authentication data */ | |
476 | ||
477 | ||
478 | strlcpy(data.username, username, sizeof(data.username)); | |
479 | strlcpy(data.password, password, sizeof(data.password)); | |
480 | ||
481 | pamdata.conv = pam_func; | |
482 | pamdata.appdata_ptr = &data; | |
483 | ||
484 | # ifdef __hpux | |
485 | /* | |
486 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
487 | * more info... | |
488 | */ | |
489 | ||
490 | auth_data = &data; | |
491 | # endif /* __hpux */ | |
492 | ||
493 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
494 | if (pamerr != PAM_SUCCESS) | |
495 | { | |
496 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
497 | "cupsdAuthorize: pam_start() returned %d (%s)!\n", | |
498 | pamerr, pam_strerror(pamh, pamerr)); | |
499 | pam_end(pamh, 0); | |
500 | return; | |
501 | } | |
502 | ||
503 | pamerr = pam_authenticate(pamh, PAM_SILENT); | |
504 | if (pamerr != PAM_SUCCESS) | |
505 | { | |
506 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
507 | "cupsdAuthorize: pam_authenticate() returned %d " | |
508 | "(%s)!\n", | |
509 | pamerr, pam_strerror(pamh, pamerr)); | |
510 | pam_end(pamh, 0); | |
511 | return; | |
512 | } | |
513 | ||
514 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); | |
515 | if (pamerr != PAM_SUCCESS) | |
516 | { | |
517 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
518 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
519 | "(%s)!\n", | |
520 | pamerr, pam_strerror(pamh, pamerr)); | |
521 | pam_end(pamh, 0); | |
522 | return; | |
523 | } | |
524 | ||
525 | pam_end(pamh, PAM_SUCCESS); | |
526 | ||
527 | #elif defined(HAVE_USERSEC_H) | |
528 | /* | |
529 | * Use AIX authentication interface... | |
530 | */ | |
531 | ||
532 | char *authmsg; /* Authentication message */ | |
533 | char *loginmsg; /* Login message */ | |
534 | int reenter; /* ??? */ | |
535 | ||
536 | ||
537 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
538 | "cupsdAuthorize: AIX authenticate of username \"%s\"", | |
539 | username); | |
540 | ||
541 | reenter = 1; | |
542 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
543 | { | |
544 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
545 | "cupsdAuthorize: Unable to authenticate username " | |
546 | "\"%s\": %s", | |
547 | username, strerror(errno)); | |
548 | return; | |
549 | } | |
550 | ||
551 | #else | |
552 | /* | |
553 | * Use normal UNIX password file-based authentication... | |
554 | */ | |
555 | ||
556 | char *pass; /* Encrypted password */ | |
557 | struct passwd *pw; /* User password data */ | |
558 | # ifdef HAVE_SHADOW_H | |
559 | struct spwd *spw; /* Shadow password data */ | |
560 | # endif /* HAVE_SHADOW_H */ | |
561 | ||
562 | ||
563 | pw = getpwnam(username); /* Get the current password */ | |
564 | endpwent(); /* Close the password file */ | |
565 | ||
566 | if (!pw) | |
567 | { | |
568 | /* | |
569 | * No such user... | |
570 | */ | |
571 | ||
572 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
573 | "cupsdAuthorize: Unknown username \"%s\"!", | |
574 | username); | |
575 | return (HTTP_UNAUTHORIZED); | |
576 | } | |
577 | ||
578 | # ifdef HAVE_SHADOW_H | |
579 | spw = getspnam(username); | |
580 | endspent(); | |
581 | ||
582 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
583 | { | |
584 | /* | |
585 | * Don't allow blank passwords! | |
586 | */ | |
587 | ||
588 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
589 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
590 | "password!", username); | |
591 | return; | |
592 | } | |
593 | ||
594 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
595 | # else | |
596 | if (!pw->pw_passwd[0]) | |
597 | # endif /* HAVE_SHADOW_H */ | |
598 | { | |
599 | /* | |
600 | * Don't allow blank passwords! | |
601 | */ | |
602 | ||
603 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
604 | "cupsdAuthorize: Username \"%s\" has no password!", | |
605 | username); | |
606 | return; | |
607 | } | |
608 | ||
609 | /* | |
610 | * OK, the password isn't blank, so compare with what came from the | |
611 | * client... | |
612 | */ | |
613 | ||
614 | pass = cups_crypt(password, pw->pw_passwd); | |
615 | ||
616 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
617 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
618 | pw->pw_passwd, pass); | |
619 | ||
620 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
621 | { | |
622 | # ifdef HAVE_SHADOW_H | |
623 | if (spw) | |
624 | { | |
625 | pass = cups_crypt(password, spw->sp_pwdp); | |
626 | ||
627 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
628 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
629 | spw->sp_pwdp, pass); | |
630 | ||
631 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
632 | { | |
633 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
634 | "cupsdAuthorize: Authentication failed for " | |
635 | "user \"%s\"!", | |
636 | username); | |
637 | return; | |
638 | } | |
639 | } | |
640 | else | |
641 | # endif /* HAVE_SHADOW_H */ | |
642 | { | |
643 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
644 | "cupsdAuthorize: Authentication failed for " | |
645 | "user \"%s\"!", | |
646 | username); | |
647 | return; | |
648 | } | |
649 | } | |
650 | #endif /* HAVE_LIBPAM */ | |
651 | } | |
652 | break; | |
653 | ||
654 | case AUTH_BASICDIGEST : | |
655 | /* | |
656 | * Do Basic authentication with the Digest password file... | |
657 | */ | |
658 | ||
659 | if (!cupsdGetMD5Passwd(username, NULL, md5)) | |
660 | { | |
661 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
662 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
663 | username); | |
664 | return; | |
665 | } | |
666 | ||
667 | httpMD5(username, "CUPS", password, basicmd5); | |
668 | ||
669 | if (strcmp(md5, basicmd5)) | |
670 | { | |
671 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
672 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
673 | username); | |
674 | return; | |
675 | } | |
676 | break; | |
677 | } | |
678 | } | |
679 | else if (!strncmp(authorization, "Digest", 6) && type == AUTH_DIGEST) | |
680 | { | |
681 | /* | |
682 | * Get the username, password, and nonce from the Digest attributes... | |
683 | */ | |
684 | ||
685 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
686 | username, sizeof(username)) || !username[0]) | |
687 | { | |
688 | /* | |
689 | * Username must not be empty... | |
690 | */ | |
691 | ||
692 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
693 | "cupsdAuthorize: Empty or missing Digest username!"); | |
694 | return; | |
695 | } | |
696 | ||
697 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
698 | password, sizeof(password)) || !password[0]) | |
699 | { | |
700 | /* | |
701 | * Password must not be empty... | |
702 | */ | |
703 | ||
704 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
705 | "cupsdAuthorize: Empty or missing Digest password!"); | |
706 | return; | |
707 | } | |
708 | ||
709 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
710 | nonce)) | |
711 | { | |
712 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
713 | "cupsdAuthorize: No nonce value for Digest " | |
714 | "authentication!"); | |
715 | return; | |
716 | } | |
717 | ||
718 | if (strcmp(con->http.hostname, nonce)) | |
719 | { | |
720 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
721 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
722 | "got \"%s\"!", con->http.hostname, nonce); | |
723 | return; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Validate the username and password... | |
728 | */ | |
729 | ||
730 | if (!cupsdGetMD5Passwd(username, NULL, md5)) | |
731 | { | |
732 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
733 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
734 | username); | |
735 | return; | |
736 | } | |
737 | ||
738 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
739 | ||
740 | if (strcmp(md5, password)) | |
741 | { | |
742 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
743 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
744 | username); | |
745 | return; | |
746 | } | |
747 | } | |
748 | else | |
749 | { | |
750 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
751 | "cupsdAuthorize: Bad authentication data."); | |
752 | return; | |
753 | } | |
754 | ||
755 | /* | |
756 | * If we get here, then we were able to validate the username and | |
757 | * password - copy the validated username and password to the client | |
758 | * data and return... | |
759 | */ | |
760 | ||
761 | strlcpy(con->username, username, sizeof(con->username)); | |
762 | strlcpy(con->password, password, sizeof(con->password)); | |
763 | ||
764 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: username=\"%s\"", | |
765 | con->username); | |
766 | } | |
767 | ||
768 | ||
769 | /* | |
770 | * 'cupsdCheckAuth()' - Check authorization masks. | |
771 | */ | |
772 | ||
773 | int /* O - 1 if mask matches, 0 otherwise */ | |
774 | cupsdCheckAuth( | |
775 | unsigned ip[4], /* I - Client address */ | |
776 | char *name, /* I - Client hostname */ | |
777 | int name_len, /* I - Length of hostname */ | |
778 | int num_masks, /* I - Number of masks */ | |
779 | cupsd_authmask_t *masks) /* I - Masks */ | |
780 | { | |
781 | int i; /* Looping var */ | |
782 | cupsd_netif_t *iface; /* Network interface */ | |
783 | unsigned netip4; /* IPv4 network address */ | |
784 | #ifdef AF_INET6 | |
785 | unsigned netip6[4]; /* IPv6 network address */ | |
786 | #endif /* AF_INET6 */ | |
787 | ||
788 | while (num_masks > 0) | |
789 | { | |
790 | switch (masks->type) | |
791 | { | |
792 | case AUTH_INTERFACE : | |
793 | /* | |
794 | * Check for a match with a network interface... | |
795 | */ | |
796 | ||
797 | netip4 = htonl(ip[3]); | |
798 | ||
799 | #ifdef AF_INET6 | |
800 | netip6[0] = htonl(ip[0]); | |
801 | netip6[1] = htonl(ip[1]); | |
802 | netip6[2] = htonl(ip[2]); | |
803 | netip6[3] = htonl(ip[3]); | |
804 | #endif /* AF_INET6 */ | |
805 | ||
806 | if (!strcmp(masks->mask.name.name, "*")) | |
807 | { | |
808 | /* | |
809 | * Check against all local interfaces... | |
810 | */ | |
811 | ||
812 | cupsdNetIFUpdate(); | |
813 | ||
e00b005a | 814 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
815 | iface; | |
816 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 817 | { |
818 | /* | |
819 | * Only check local interfaces... | |
820 | */ | |
821 | ||
822 | if (!iface->is_local) | |
823 | continue; | |
824 | ||
825 | if (iface->address.addr.sa_family == AF_INET) | |
826 | { | |
827 | /* | |
828 | * Check IPv4 address... | |
829 | */ | |
830 | ||
831 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
832 | (iface->address.ipv4.sin_addr.s_addr & | |
833 | iface->mask.ipv4.sin_addr.s_addr)) | |
834 | return (1); | |
835 | } | |
836 | #ifdef AF_INET6 | |
837 | else | |
838 | { | |
839 | /* | |
840 | * Check IPv6 address... | |
841 | */ | |
842 | ||
843 | for (i = 0; i < 4; i ++) | |
844 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
845 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
846 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
847 | break; | |
848 | ||
849 | if (i == 4) | |
850 | return (1); | |
851 | } | |
852 | #endif /* AF_INET6 */ | |
853 | } | |
854 | } | |
855 | else | |
856 | { | |
857 | /* | |
858 | * Check the named interface... | |
859 | */ | |
860 | ||
e00b005a | 861 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
862 | iface && !strcmp(masks->mask.name.name, iface->name); | |
863 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 864 | { |
865 | if (iface->address.addr.sa_family == AF_INET) | |
866 | { | |
867 | /* | |
868 | * Check IPv4 address... | |
869 | */ | |
870 | ||
871 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
872 | (iface->address.ipv4.sin_addr.s_addr & | |
873 | iface->mask.ipv4.sin_addr.s_addr)) | |
874 | return (1); | |
875 | } | |
876 | #ifdef AF_INET6 | |
877 | else | |
878 | { | |
879 | /* | |
880 | * Check IPv6 address... | |
881 | */ | |
882 | ||
883 | for (i = 0; i < 4; i ++) | |
884 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
885 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
886 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
887 | break; | |
888 | ||
889 | if (i == 4) | |
890 | return (1); | |
891 | } | |
892 | #endif /* AF_INET6 */ | |
893 | } | |
894 | } | |
895 | break; | |
896 | ||
897 | case AUTH_NAME : | |
898 | /* | |
899 | * Check for exact name match... | |
900 | */ | |
901 | ||
902 | if (!strcasecmp(name, masks->mask.name.name)) | |
903 | return (1); | |
904 | ||
905 | /* | |
906 | * Check for domain match... | |
907 | */ | |
908 | ||
909 | if (name_len >= masks->mask.name.length && | |
910 | masks->mask.name.name[0] == '.' && | |
bd7854cb | 911 | !strcasecmp(name + name_len - masks->mask.name.length, |
912 | masks->mask.name.name)) | |
ef416fc2 | 913 | return (1); |
914 | break; | |
915 | ||
916 | case AUTH_IP : | |
917 | /* | |
918 | * Check for IP/network address match... | |
919 | */ | |
920 | ||
921 | for (i = 0; i < 4; i ++) | |
922 | if ((ip[i] & masks->mask.ip.netmask[i]) != | |
923 | masks->mask.ip.address[i]) | |
924 | break; | |
925 | ||
926 | if (i == 4) | |
927 | return (1); | |
928 | break; | |
929 | } | |
930 | ||
931 | masks ++; | |
932 | num_masks --; | |
933 | } | |
934 | ||
935 | return (0); | |
936 | } | |
937 | ||
938 | ||
939 | /* | |
940 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
941 | */ | |
942 | ||
943 | int /* O - 1 if user is a member, 0 otherwise */ | |
944 | cupsdCheckGroup( | |
945 | const char *username, /* I - User name */ | |
946 | struct passwd *user, /* I - System user info */ | |
947 | const char *groupname) /* I - Group name */ | |
948 | { | |
949 | int i; /* Looping var */ | |
950 | struct group *group; /* System group info */ | |
951 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 952 | #ifdef HAVE_MBR_UID_TO_UUID |
953 | uuid_t useruuid, /* UUID for username */ | |
954 | groupuuid; /* UUID for groupname */ | |
955 | int is_member; /* True if user is a member of group */ | |
956 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
ef416fc2 | 957 | |
958 | ||
959 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
960 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
961 | username, user, groupname); | |
962 | ||
963 | /* | |
964 | * Validate input... | |
965 | */ | |
966 | ||
967 | if (!username || !groupname) | |
968 | return (0); | |
969 | ||
970 | /* | |
971 | * Check to see if the user is a member of the named group... | |
972 | */ | |
973 | ||
974 | group = getgrnam(groupname); | |
975 | endgrent(); | |
976 | ||
977 | if (group != NULL) | |
978 | { | |
979 | /* | |
980 | * Group exists, check it... | |
981 | */ | |
982 | ||
983 | for (i = 0; group->gr_mem[i]; i ++) | |
984 | if (!strcasecmp(username, group->gr_mem[i])) | |
985 | return (1); | |
986 | } | |
987 | ||
988 | /* | |
989 | * Group doesn't exist or user not in group list, check the group ID | |
990 | * against the user's group ID... | |
991 | */ | |
992 | ||
993 | if (user && group && group->gr_gid == user->pw_gid) | |
994 | return (1); | |
995 | ||
bd7854cb | 996 | #ifdef HAVE_MBR_UID_TO_UUID |
997 | /* | |
998 | * Check group membership through MacOS X membership API... | |
999 | */ | |
1000 | ||
1001 | if (user && group) | |
1002 | if (!mbr_uid_to_uuid(user->pw_uid, useruuid)) | |
1003 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) | |
1004 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1005 | if (is_member) | |
1006 | return (1); | |
1007 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
1008 | ||
ef416fc2 | 1009 | /* |
1010 | * Username not found, group not found, or user is not part of the | |
1011 | * system group... Check for a user and group in the MD5 password | |
1012 | * file... | |
1013 | */ | |
1014 | ||
1015 | if (cupsdGetMD5Passwd(username, groupname, junk) != NULL) | |
1016 | return (1); | |
1017 | ||
1018 | /* | |
1019 | * If we get this far, then the user isn't part of the named group... | |
1020 | */ | |
1021 | ||
1022 | return (0); | |
1023 | } | |
1024 | ||
1025 | ||
1026 | /* | |
1027 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1028 | */ | |
1029 | ||
1030 | cupsd_location_t * /* O - New location */ | |
1031 | cupsdCopyLocation( | |
1032 | cupsd_location_t **loc) /* IO - Original location */ | |
1033 | { | |
1034 | int i; /* Looping var */ | |
ef416fc2 | 1035 | cupsd_location_t *temp; /* New location */ |
1036 | char location[HTTP_MAX_URI]; | |
1037 | /* Location of resource */ | |
1038 | ||
1039 | ||
ef416fc2 | 1040 | /* |
1041 | * Use a local copy of location because cupsdAddLocation may cause | |
1042 | * this memory to be moved... | |
1043 | */ | |
1044 | ||
1045 | strlcpy(location, (*loc)->location, sizeof(location)); | |
1046 | ||
1047 | if ((temp = cupsdAddLocation(location)) == NULL) | |
1048 | return (NULL); | |
1049 | ||
ef416fc2 | 1050 | /* |
1051 | * Copy the information from the original location to the new one. | |
1052 | */ | |
1053 | ||
1054 | temp->limit = (*loc)->limit; | |
1055 | temp->order_type = (*loc)->order_type; | |
1056 | temp->type = (*loc)->type; | |
1057 | temp->level = (*loc)->level; | |
1058 | temp->satisfy = (*loc)->satisfy; | |
1059 | temp->encryption = (*loc)->encryption; | |
1060 | ||
1061 | if ((temp->num_names = (*loc)->num_names) > 0) | |
1062 | { | |
1063 | /* | |
1064 | * Copy the names array... | |
1065 | */ | |
1066 | ||
1067 | if ((temp->names = calloc(temp->num_names, sizeof(char *))) == NULL) | |
1068 | { | |
1069 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1070 | "cupsdCopyLocation: Unable to allocate memory for %d names: %s", | |
1071 | temp->num_names, strerror(errno)); | |
bd7854cb | 1072 | |
1073 | cupsdDeleteLocation(temp); | |
ef416fc2 | 1074 | return (NULL); |
1075 | } | |
1076 | ||
1077 | for (i = 0; i < temp->num_names; i ++) | |
1078 | if ((temp->names[i] = strdup((*loc)->names[i])) == NULL) | |
1079 | { | |
1080 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1081 | "cupsdCopyLocation: Unable to copy name \"%s\": %s", | |
1082 | (*loc)->names[i], strerror(errno)); | |
1083 | ||
bd7854cb | 1084 | cupsdDeleteLocation(temp); |
ef416fc2 | 1085 | return (NULL); |
1086 | } | |
1087 | } | |
1088 | ||
1089 | if ((temp->num_allow = (*loc)->num_allow) > 0) | |
1090 | { | |
1091 | /* | |
1092 | * Copy allow rules... | |
1093 | */ | |
1094 | ||
1095 | if ((temp->allow = calloc(temp->num_allow, sizeof(cupsd_authmask_t))) == NULL) | |
1096 | { | |
1097 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1098 | "cupsdCopyLocation: Unable to allocate memory for %d allow rules: %s", | |
1099 | temp->num_allow, strerror(errno)); | |
bd7854cb | 1100 | cupsdDeleteLocation(temp); |
ef416fc2 | 1101 | return (NULL); |
1102 | } | |
1103 | ||
1104 | for (i = 0; i < temp->num_allow; i ++) | |
1105 | switch (temp->allow[i].type = (*loc)->allow[i].type) | |
1106 | { | |
1107 | case AUTH_NAME : | |
1108 | temp->allow[i].mask.name.length = (*loc)->allow[i].mask.name.length; | |
1109 | temp->allow[i].mask.name.name = strdup((*loc)->allow[i].mask.name.name); | |
1110 | ||
1111 | if (temp->allow[i].mask.name.name == NULL) | |
1112 | { | |
1113 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1114 | "cupsdCopyLocation: Unable to copy allow name \"%s\": %s", | |
1115 | (*loc)->allow[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1116 | cupsdDeleteLocation(temp); |
ef416fc2 | 1117 | return (NULL); |
1118 | } | |
1119 | break; | |
1120 | case AUTH_IP : | |
1121 | memcpy(&(temp->allow[i].mask.ip), &((*loc)->allow[i].mask.ip), | |
1122 | sizeof(cupsd_ipmask_t)); | |
1123 | break; | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | if ((temp->num_deny = (*loc)->num_deny) > 0) | |
1128 | { | |
1129 | /* | |
1130 | * Copy deny rules... | |
1131 | */ | |
1132 | ||
1133 | if ((temp->deny = calloc(temp->num_deny, sizeof(cupsd_authmask_t))) == NULL) | |
1134 | { | |
1135 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1136 | "cupsdCopyLocation: Unable to allocate memory for %d deny rules: %s", | |
1137 | temp->num_deny, strerror(errno)); | |
bd7854cb | 1138 | cupsdDeleteLocation(temp); |
ef416fc2 | 1139 | return (NULL); |
1140 | } | |
1141 | ||
1142 | for (i = 0; i < temp->num_deny; i ++) | |
1143 | switch (temp->deny[i].type = (*loc)->deny[i].type) | |
1144 | { | |
1145 | case AUTH_NAME : | |
1146 | temp->deny[i].mask.name.length = (*loc)->deny[i].mask.name.length; | |
1147 | temp->deny[i].mask.name.name = strdup((*loc)->deny[i].mask.name.name); | |
1148 | ||
1149 | if (temp->deny[i].mask.name.name == NULL) | |
1150 | { | |
1151 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1152 | "cupsdCopyLocation: Unable to copy deny name \"%s\": %s", | |
1153 | (*loc)->deny[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1154 | cupsdDeleteLocation(temp); |
ef416fc2 | 1155 | return (NULL); |
1156 | } | |
1157 | break; | |
1158 | case AUTH_IP : | |
1159 | memcpy(&(temp->deny[i].mask.ip), &((*loc)->deny[i].mask.ip), | |
1160 | sizeof(cupsd_ipmask_t)); | |
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | return (temp); | |
1166 | } | |
1167 | ||
1168 | ||
1169 | /* | |
1170 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1171 | */ | |
1172 | ||
1173 | void | |
1174 | cupsdDeleteAllLocations(void) | |
1175 | { | |
ef416fc2 | 1176 | cupsd_location_t *loc; /* Current location */ |
1177 | ||
1178 | ||
1179 | /* | |
1180 | * Free all of the allow/deny records first... | |
1181 | */ | |
1182 | ||
bd7854cb | 1183 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1184 | loc; | |
1185 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1186 | cupsdDeleteLocation(loc); |
1187 | ||
1188 | /* | |
1189 | * Then free the location array... | |
1190 | */ | |
1191 | ||
bd7854cb | 1192 | cupsArrayDelete(Locations); |
1193 | Locations = NULL; | |
ef416fc2 | 1194 | } |
1195 | ||
1196 | ||
1197 | /* | |
1198 | * 'cupsdDeleteLocation()' - Free all memory used by a location. | |
1199 | */ | |
1200 | ||
1201 | void | |
1202 | cupsdDeleteLocation( | |
1203 | cupsd_location_t *loc) /* I - Location to delete */ | |
1204 | { | |
1205 | int i; /* Looping var */ | |
1206 | cupsd_authmask_t *mask; /* Current mask */ | |
1207 | ||
1208 | ||
bd7854cb | 1209 | cupsArrayRemove(Locations, loc); |
1210 | ||
ef416fc2 | 1211 | for (i = loc->num_names - 1; i >= 0; i --) |
1212 | free(loc->names[i]); | |
1213 | ||
1214 | if (loc->num_names > 0) | |
1215 | free(loc->names); | |
1216 | ||
1217 | for (i = loc->num_allow, mask = loc->allow; i > 0; i --, mask ++) | |
1218 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1219 | free(mask->mask.name.name); | |
1220 | ||
1221 | if (loc->num_allow > 0) | |
1222 | free(loc->allow); | |
1223 | ||
1224 | for (i = loc->num_deny, mask = loc->deny; i > 0; i --, mask ++) | |
1225 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1226 | free(mask->mask.name.name); | |
1227 | ||
1228 | if (loc->num_deny > 0) | |
1229 | free(loc->deny); | |
bd7854cb | 1230 | |
1231 | free(loc->location); | |
1232 | free(loc); | |
ef416fc2 | 1233 | } |
1234 | ||
1235 | ||
1236 | /* | |
1237 | * 'cupsdDenyHost()' - Add a host name that is not allowed to access the | |
1238 | * location. | |
1239 | */ | |
1240 | ||
1241 | void | |
1242 | cupsdDenyHost(cupsd_location_t *loc, /* I - Location to add to */ | |
1243 | char *name) /* I - Name of host or domain to add */ | |
1244 | { | |
1245 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1246 | char ifname[32], /* Interface name */ | |
1247 | *ifptr; /* Pointer to end of name */ | |
1248 | ||
1249 | ||
1250 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdDenyHost(loc=%p(%s), name=\"%s\")", | |
1251 | loc, loc->location, name); | |
1252 | ||
1253 | if ((temp = add_deny(loc)) == NULL) | |
1254 | return; | |
1255 | ||
bd7854cb | 1256 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 1257 | { |
1258 | /* | |
1259 | * Deny *interface*... | |
1260 | */ | |
1261 | ||
1262 | temp->type = AUTH_INTERFACE; | |
1263 | temp->mask.name.name = strdup("*"); | |
1264 | temp->mask.name.length = 1; | |
1265 | } | |
bd7854cb | 1266 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 1267 | { |
1268 | /* | |
1269 | * Deny *interface*... | |
1270 | */ | |
1271 | ||
1272 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
1273 | ||
1274 | ifptr = ifname + strlen(ifname); | |
1275 | ||
1276 | if (ifptr[-1] == ')') | |
1277 | { | |
1278 | ifptr --; | |
1279 | *ifptr = '\0'; | |
1280 | } | |
1281 | ||
1282 | temp->type = AUTH_INTERFACE; | |
1283 | temp->mask.name.name = strdup(ifname); | |
1284 | temp->mask.name.length = ifptr - ifname; | |
1285 | } | |
1286 | else | |
1287 | { | |
1288 | /* | |
1289 | * Deny name... | |
1290 | */ | |
1291 | ||
1292 | temp->type = AUTH_NAME; | |
1293 | temp->mask.name.name = strdup(name); | |
1294 | temp->mask.name.length = strlen(name); | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | ||
1299 | /* | |
1300 | * 'cupsdDenyIP()' - Add an IP address or network that is not allowed to | |
1301 | * access the location. | |
1302 | */ | |
1303 | ||
1304 | void | |
1305 | cupsdDenyIP(cupsd_location_t *loc, /* I - Location to add to */ | |
1306 | unsigned address[4],/* I - IP address to add */ | |
1307 | unsigned netmask[4])/* I - Netmask of address */ | |
1308 | { | |
1309 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1310 | ||
1311 | ||
1312 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1313 | "cupsdDenyIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
1314 | loc, loc->location, address[0], address[1], address[2], | |
1315 | address[3], netmask[0], netmask[1], netmask[2], | |
1316 | netmask[3]); | |
1317 | ||
1318 | if ((temp = add_deny(loc)) == NULL) | |
1319 | return; | |
1320 | ||
1321 | temp->type = AUTH_IP; | |
1322 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
1323 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
1324 | } | |
1325 | ||
1326 | ||
1327 | /* | |
1328 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1329 | */ | |
1330 | ||
1331 | cupsd_location_t * /* O - Location that matches */ | |
1332 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1333 | http_state_t state) /* I - HTTP state/request */ | |
1334 | { | |
ef416fc2 | 1335 | char uri[HTTP_MAX_URI], |
1336 | /* URI in request... */ | |
1337 | *uriptr; /* Pointer into URI */ | |
1338 | cupsd_location_t *loc, /* Current location */ | |
1339 | *best; /* Best match for location so far */ | |
1340 | int bestlen; /* Length of best match */ | |
1341 | int limit; /* Limit field */ | |
1342 | static const int limits[] = /* Map http_status_t to AUTH_LIMIT_xyz */ | |
1343 | { | |
1344 | AUTH_LIMIT_ALL, | |
1345 | AUTH_LIMIT_OPTIONS, | |
1346 | AUTH_LIMIT_GET, | |
1347 | AUTH_LIMIT_GET, | |
1348 | AUTH_LIMIT_HEAD, | |
1349 | AUTH_LIMIT_POST, | |
1350 | AUTH_LIMIT_POST, | |
1351 | AUTH_LIMIT_POST, | |
1352 | AUTH_LIMIT_PUT, | |
1353 | AUTH_LIMIT_PUT, | |
1354 | AUTH_LIMIT_DELETE, | |
1355 | AUTH_LIMIT_TRACE, | |
1356 | AUTH_LIMIT_ALL, | |
1357 | AUTH_LIMIT_ALL | |
1358 | }; | |
1359 | ||
1360 | ||
1361 | /* | |
1362 | * First copy the connection URI to a local string so we have drop | |
1363 | * any .ppd extension from the pathname in /printers or /classes | |
1364 | * URIs... | |
1365 | */ | |
1366 | ||
1367 | strlcpy(uri, path, sizeof(uri)); | |
1368 | ||
1369 | if (!strncmp(uri, "/printers/", 10) || | |
1370 | !strncmp(uri, "/classes/", 9)) | |
1371 | { | |
1372 | /* | |
1373 | * Check if the URI has .ppd on the end... | |
1374 | */ | |
1375 | ||
1376 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1377 | ||
1378 | if (!strcmp(uriptr, ".ppd")) | |
1379 | *uriptr = '\0'; | |
1380 | } | |
1381 | ||
1382 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1383 | ||
1384 | /* | |
1385 | * Loop through the list of locations to find a match... | |
1386 | */ | |
1387 | ||
1388 | limit = limits[state]; | |
1389 | best = NULL; | |
1390 | bestlen = 0; | |
1391 | ||
bd7854cb | 1392 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1393 | loc; | |
1394 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1395 | { |
1396 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
1397 | loc->location, loc->limit); | |
1398 | ||
1399 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1400 | { | |
1401 | /* | |
1402 | * Use case-insensitive comparison for queue names... | |
1403 | */ | |
1404 | ||
1405 | if (loc->length > bestlen && | |
bd7854cb | 1406 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1407 | loc->location[0] == '/' && |
1408 | (limit & loc->limit) != 0) | |
1409 | { | |
1410 | best = loc; | |
1411 | bestlen = loc->length; | |
1412 | } | |
1413 | } | |
1414 | else | |
1415 | { | |
1416 | /* | |
1417 | * Use case-sensitive comparison for other URIs... | |
1418 | */ | |
1419 | ||
1420 | if (loc->length > bestlen && | |
1421 | !strncmp(uri, loc->location, loc->length) && | |
1422 | loc->location[0] == '/' && | |
1423 | (limit & loc->limit) != 0) | |
1424 | { | |
1425 | best = loc; | |
1426 | bestlen = loc->length; | |
1427 | } | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | /* | |
1432 | * Return the match, if any... | |
1433 | */ | |
1434 | ||
1435 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1436 | best ? best->location : "NONE"); | |
1437 | ||
1438 | return (best); | |
1439 | } | |
1440 | ||
1441 | ||
1442 | /* | |
1443 | * 'cupsdFindLocation()' - Find the named location. | |
1444 | */ | |
1445 | ||
1446 | cupsd_location_t * /* O - Location that matches */ | |
1447 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1448 | { | |
bd7854cb | 1449 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1450 | |
1451 | ||
bd7854cb | 1452 | key.location = (char *)location; |
ef416fc2 | 1453 | |
bd7854cb | 1454 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1455 | } |
1456 | ||
1457 | ||
1458 | /* | |
1459 | * 'cupsdGetMD5Passwd()' - Get an MD5 password. | |
1460 | */ | |
1461 | ||
1462 | char * /* O - MD5 password string */ | |
1463 | cupsdGetMD5Passwd(const char *username, /* I - Username */ | |
1464 | const char *group, /* I - Group */ | |
1465 | char passwd[33])/* O - MD5 password string */ | |
1466 | { | |
1467 | cups_file_t *fp; /* passwd.md5 file */ | |
1468 | char filename[1024], /* passwd.md5 filename */ | |
1469 | line[256], /* Line from file */ | |
1470 | tempuser[33], /* User from file */ | |
1471 | tempgroup[33]; /* Group from file */ | |
1472 | ||
1473 | ||
1474 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1475 | "cupsdGetMD5Passwd(username=\"%s\", group=\"%s\", passwd=%p)", | |
1476 | username, group ? group : "(null)", passwd); | |
1477 | ||
1478 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
1479 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
1480 | { | |
1481 | if (errno != ENOENT) | |
1482 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
1483 | strerror(errno)); | |
1484 | ||
1485 | return (NULL); | |
1486 | } | |
1487 | ||
1488 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
1489 | { | |
1490 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
1491 | { | |
1492 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
1493 | continue; | |
1494 | } | |
1495 | ||
bd7854cb | 1496 | if (!strcmp(username, tempuser) && |
1497 | (group == NULL || !strcmp(group, tempgroup))) | |
ef416fc2 | 1498 | { |
1499 | /* | |
1500 | * Found the password entry! | |
1501 | */ | |
1502 | ||
1503 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
1504 | username, tempgroup); | |
1505 | ||
1506 | cupsFileClose(fp); | |
1507 | return (passwd); | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | /* | |
1512 | * Didn't find a password entry - return NULL! | |
1513 | */ | |
1514 | ||
1515 | cupsFileClose(fp); | |
1516 | return (NULL); | |
1517 | } | |
1518 | ||
1519 | ||
1520 | /* | |
1521 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1522 | */ | |
1523 | ||
1524 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1525 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1526 | const char *owner)/* I - Owner of object */ | |
1527 | { | |
1528 | int i, j, /* Looping vars */ | |
1529 | auth; /* Authorization status */ | |
1530 | unsigned address[4]; /* Authorization address */ | |
1531 | cupsd_location_t *best; /* Best match for location so far */ | |
1532 | int hostlen; /* Length of hostname */ | |
fa73b229 | 1533 | const char *username; /* Username to authorize */ |
ef416fc2 | 1534 | struct passwd *pw; /* User password data */ |
1535 | static const char * const levels[] = /* Auth levels */ | |
1536 | { | |
1537 | "ANON", | |
1538 | "USER", | |
1539 | "GROUP" | |
1540 | }; | |
1541 | static const char * const types[] = /* Auth types */ | |
1542 | { | |
1543 | "NONE", | |
1544 | "BASIC", | |
1545 | "DIGEST", | |
1546 | "BASICDIGEST" | |
1547 | }; | |
1548 | ||
1549 | ||
1550 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1551 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
1552 | con->uri, con->best, con->best ? con->best->location : ""); | |
fa73b229 | 1553 | if (owner) |
1554 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1555 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1556 | |
1557 | /* | |
1558 | * If there is no "best" authentication rule for this request, then | |
1559 | * access is allowed from the local system and denied from other | |
1560 | * addresses... | |
1561 | */ | |
1562 | ||
1563 | if (!con->best) | |
1564 | { | |
1565 | if (!strcmp(con->http.hostname, "localhost") || | |
1566 | !strcmp(con->http.hostname, ServerName)) | |
1567 | return (HTTP_OK); | |
1568 | else | |
1569 | return (HTTP_FORBIDDEN); | |
1570 | } | |
1571 | ||
1572 | best = con->best; | |
1573 | ||
1574 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
bd7854cb | 1575 | "cupsdIsAuthorized: level=AUTH_%s, type=AUTH_%s, " |
1576 | "satisfy=AUTH_SATISFY_%s, num_names=%d", | |
ef416fc2 | 1577 | levels[best->level], types[best->type], |
1578 | best->satisfy ? "ANY" : "ALL", best->num_names); | |
1579 | ||
1580 | if (best->limit == AUTH_LIMIT_IPP) | |
1581 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", | |
1582 | best->op, ippOpString(best->op)); | |
1583 | ||
1584 | /* | |
1585 | * Check host/ip-based accesses... | |
1586 | */ | |
1587 | ||
1588 | #ifdef AF_INET6 | |
1589 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1590 | { | |
1591 | /* | |
1592 | * Copy IPv6 address... | |
1593 | */ | |
1594 | ||
1595 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1596 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1597 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1598 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1599 | } | |
1600 | else | |
1601 | #endif /* AF_INET6 */ | |
1602 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
1603 | { | |
1604 | /* | |
1605 | * Copy IPv4 address... | |
1606 | */ | |
1607 | ||
1608 | address[0] = 0; | |
1609 | address[1] = 0; | |
1610 | address[2] = 0; | |
1611 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
1612 | } | |
1613 | else | |
1614 | memset(address, 0, sizeof(address)); | |
1615 | ||
1616 | hostlen = strlen(con->http.hostname); | |
1617 | ||
1618 | if (!strcasecmp(con->http.hostname, "localhost")) | |
1619 | { | |
1620 | /* | |
1621 | * Access from localhost (127.0.0.1 or :::1) is always allowed... | |
1622 | */ | |
1623 | ||
1624 | auth = AUTH_ALLOW; | |
1625 | } | |
1626 | else | |
1627 | { | |
1628 | /* | |
1629 | * Do authorization checks on the domain/address... | |
1630 | */ | |
1631 | ||
1632 | switch (best->order_type) | |
1633 | { | |
1634 | default : | |
1635 | auth = AUTH_DENY; /* anti-compiler-warning-code */ | |
1636 | break; | |
1637 | ||
1638 | case AUTH_ALLOW : /* Order Deny,Allow */ | |
1639 | auth = AUTH_ALLOW; | |
1640 | ||
1641 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1642 | best->num_deny, best->deny)) | |
1643 | auth = AUTH_DENY; | |
1644 | ||
1645 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1646 | best->num_allow, best->allow)) | |
1647 | auth = AUTH_ALLOW; | |
1648 | break; | |
1649 | ||
1650 | case AUTH_DENY : /* Order Allow,Deny */ | |
1651 | auth = AUTH_DENY; | |
1652 | ||
1653 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1654 | best->num_allow, best->allow)) | |
1655 | auth = AUTH_ALLOW; | |
1656 | ||
1657 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1658 | best->num_deny, best->deny)) | |
1659 | auth = AUTH_DENY; | |
1660 | break; | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=AUTH_%s...", | |
1665 | auth ? "DENY" : "ALLOW"); | |
1666 | ||
1667 | if (auth == AUTH_DENY && best->satisfy == AUTH_SATISFY_ALL) | |
1668 | return (HTTP_FORBIDDEN); | |
1669 | ||
1670 | #ifdef HAVE_SSL | |
1671 | /* | |
1672 | * See if encryption is required... | |
1673 | */ | |
1674 | ||
bd7854cb | 1675 | if (best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
1676 | best->satisfy == AUTH_SATISFY_ALL) | |
ef416fc2 | 1677 | { |
1678 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1679 | "cupsdIsAuthorized: Need upgrade to TLS..."); | |
1680 | return (HTTP_UPGRADE_REQUIRED); | |
1681 | } | |
1682 | #endif /* HAVE_SSL */ | |
1683 | ||
1684 | /* | |
1685 | * Now see what access level is required... | |
1686 | */ | |
1687 | ||
1688 | if (best->level == AUTH_ANON || /* Anonymous access - allow it */ | |
1689 | (best->type == AUTH_NONE && best->num_names == 0)) | |
1690 | return (HTTP_OK); | |
1691 | ||
fa73b229 | 1692 | if (!con->username[0] && best->type == AUTH_NONE && |
1693 | best->limit == AUTH_LIMIT_IPP) | |
ef416fc2 | 1694 | { |
1695 | /* | |
1696 | * Check for unauthenticated username... | |
1697 | */ | |
1698 | ||
1699 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
1700 | ||
1701 | ||
1702 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
1703 | if (attr) | |
1704 | { | |
1705 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1706 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", | |
1707 | attr->values[0].string.text); | |
fa73b229 | 1708 | username = attr->values[0].string.text; |
ef416fc2 | 1709 | } |
fa73b229 | 1710 | else if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) |
ef416fc2 | 1711 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1712 | else | |
1713 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1714 | } | |
fa73b229 | 1715 | else |
1716 | { | |
1717 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: username=\"%s\"", | |
1718 | con->username); | |
1719 | ||
1720 | if (!con->username[0]) | |
1721 | { | |
1722 | if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) | |
1723 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ | |
1724 | else | |
1725 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1726 | } | |
1727 | ||
1728 | username = con->username; | |
1729 | } | |
ef416fc2 | 1730 | |
1731 | /* | |
fa73b229 | 1732 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 1733 | * access... (root always matches) |
1734 | */ | |
1735 | ||
fa73b229 | 1736 | if (!strcmp(username, "root")) |
ef416fc2 | 1737 | return (HTTP_OK); |
1738 | ||
1739 | /* | |
1740 | * Get the user info... | |
1741 | */ | |
1742 | ||
fa73b229 | 1743 | pw = getpwnam(username); |
ef416fc2 | 1744 | endpwent(); |
1745 | ||
1746 | if (best->level == AUTH_USER) | |
1747 | { | |
1748 | /* | |
1749 | * If there are no names associated with this location, then | |
1750 | * any valid user is OK... | |
1751 | */ | |
1752 | ||
1753 | if (best->num_names == 0) | |
1754 | return (HTTP_OK); | |
1755 | ||
1756 | /* | |
1757 | * Otherwise check the user list and return OK if this user is | |
1758 | * allowed... | |
1759 | */ | |
1760 | ||
1761 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1762 | "cupsdIsAuthorized: Checking user membership..."); | |
1763 | ||
1764 | for (i = 0; i < best->num_names; i ++) | |
1765 | { | |
1766 | if (!strcasecmp(best->names[i], "@OWNER") && owner && | |
fa73b229 | 1767 | !strcasecmp(username, owner)) |
ef416fc2 | 1768 | return (HTTP_OK); |
1769 | else if (!strcasecmp(best->names[i], "@SYSTEM")) | |
1770 | { | |
1771 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 1772 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 1773 | return (HTTP_OK); |
1774 | } | |
1775 | else if (best->names[i][0] == '@') | |
1776 | { | |
fa73b229 | 1777 | if (cupsdCheckGroup(username, pw, best->names[i] + 1)) |
ef416fc2 | 1778 | return (HTTP_OK); |
1779 | } | |
fa73b229 | 1780 | else if (!strcasecmp(username, best->names[i])) |
ef416fc2 | 1781 | return (HTTP_OK); |
1782 | } | |
1783 | ||
1784 | return (HTTP_UNAUTHORIZED); | |
1785 | } | |
1786 | ||
1787 | /* | |
1788 | * Check to see if this user is in any of the named groups... | |
1789 | */ | |
1790 | ||
1791 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1792 | "cupsdIsAuthorized: Checking group membership..."); | |
1793 | ||
1794 | /* | |
1795 | * Check to see if this user is in any of the named groups... | |
1796 | */ | |
1797 | ||
1798 | for (i = 0; i < best->num_names; i ++) | |
1799 | { | |
1800 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1801 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
1802 | best->names[i]); | |
1803 | ||
1804 | if (!strcasecmp(best->names[i], "@SYSTEM")) | |
1805 | { | |
1806 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 1807 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 1808 | return (HTTP_OK); |
1809 | } | |
fa73b229 | 1810 | else if (cupsdCheckGroup(username, pw, best->names[i])) |
ef416fc2 | 1811 | return (HTTP_OK); |
1812 | } | |
1813 | ||
1814 | /* | |
1815 | * The user isn't part of the specified group, so deny access... | |
1816 | */ | |
1817 | ||
1818 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1819 | "cupsdIsAuthorized: User not in group(s)!"); | |
1820 | ||
1821 | return (HTTP_UNAUTHORIZED); | |
1822 | } | |
1823 | ||
1824 | ||
1825 | /* | |
1826 | * 'add_allow()' - Add an allow mask to the location. | |
1827 | */ | |
1828 | ||
1829 | static cupsd_authmask_t * /* O - New mask record */ | |
1830 | add_allow(cupsd_location_t *loc) /* I - Location to add to */ | |
1831 | { | |
1832 | cupsd_authmask_t *temp; /* New mask record */ | |
1833 | ||
1834 | ||
1835 | /* | |
1836 | * Range-check... | |
1837 | */ | |
1838 | ||
1839 | if (loc == NULL) | |
1840 | return (NULL); | |
1841 | ||
1842 | /* | |
1843 | * Try to allocate memory for the record... | |
1844 | */ | |
1845 | ||
1846 | if (loc->num_allow == 0) | |
1847 | temp = malloc(sizeof(cupsd_authmask_t)); | |
1848 | else | |
1849 | temp = realloc(loc->allow, sizeof(cupsd_authmask_t) * (loc->num_allow + 1)); | |
1850 | ||
1851 | if (temp == NULL) | |
1852 | return (NULL); | |
1853 | ||
1854 | loc->allow = temp; | |
1855 | temp += loc->num_allow; | |
1856 | loc->num_allow ++; | |
1857 | ||
1858 | /* | |
1859 | * Clear the mask record and return... | |
1860 | */ | |
1861 | ||
1862 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
1863 | return (temp); | |
1864 | } | |
1865 | ||
1866 | ||
1867 | /* | |
1868 | * 'add_deny()' - Add a deny mask to the location. | |
1869 | */ | |
1870 | ||
1871 | static cupsd_authmask_t * /* O - New mask record */ | |
1872 | add_deny(cupsd_location_t *loc) /* I - Location to add to */ | |
1873 | { | |
1874 | cupsd_authmask_t *temp; /* New mask record */ | |
1875 | ||
1876 | ||
1877 | /* | |
1878 | * Range-check... | |
1879 | */ | |
1880 | ||
1881 | if (loc == NULL) | |
1882 | return (NULL); | |
1883 | ||
1884 | /* | |
1885 | * Try to allocate memory for the record... | |
1886 | */ | |
1887 | ||
1888 | if (loc->num_deny == 0) | |
1889 | temp = malloc(sizeof(cupsd_authmask_t)); | |
1890 | else | |
1891 | temp = realloc(loc->deny, sizeof(cupsd_authmask_t) * (loc->num_deny + 1)); | |
1892 | ||
1893 | if (temp == NULL) | |
1894 | return (NULL); | |
1895 | ||
1896 | loc->deny = temp; | |
1897 | temp += loc->num_deny; | |
1898 | loc->num_deny ++; | |
1899 | ||
1900 | /* | |
1901 | * Clear the mask record and return... | |
1902 | */ | |
1903 | ||
1904 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
1905 | return (temp); | |
1906 | } | |
1907 | ||
1908 | ||
bd7854cb | 1909 | /* |
1910 | * 'compare_locations()' - Compare two locations. | |
1911 | */ | |
1912 | ||
1913 | static int /* O - Result of comparison */ | |
1914 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
1915 | cupsd_location_t *b) /* I - Second location */ | |
1916 | { | |
1917 | return (strcmp(b->location, a->location)); | |
1918 | } | |
1919 | ||
1920 | ||
ef416fc2 | 1921 | #if !HAVE_LIBPAM |
1922 | /* | |
1923 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
1924 | * as needed. | |
1925 | */ | |
1926 | ||
1927 | static char * /* O - Encrypted password */ | |
1928 | cups_crypt(const char *pw, /* I - Password string */ | |
1929 | const char *salt) /* I - Salt (key) string */ | |
1930 | { | |
bd7854cb | 1931 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 1932 | { |
1933 | /* | |
1934 | * Use MD5 passwords without the benefit of PAM; this is for | |
1935 | * Slackware Linux, and the algorithm was taken from the | |
1936 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
1937 | */ | |
1938 | ||
1939 | int i; /* Looping var */ | |
1940 | unsigned long n; /* Output number */ | |
1941 | int pwlen; /* Length of password string */ | |
1942 | const char *salt_end; /* End of "salt" data for MD5 */ | |
1943 | char *ptr; /* Pointer into result string */ | |
1944 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
1945 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
1946 | unsigned char digest[16]; /* MD5 digest result */ | |
1947 | static char result[120]; /* Final password string */ | |
1948 | ||
1949 | ||
1950 | /* | |
1951 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
1952 | * Get a maximum of 8 characters of salt data after $1$... | |
1953 | */ | |
1954 | ||
1955 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
1956 | if (*salt_end == '$') | |
1957 | break; | |
1958 | ||
1959 | /* | |
1960 | * Compute the MD5 sum we need... | |
1961 | */ | |
1962 | ||
1963 | pwlen = strlen(pw); | |
1964 | ||
1965 | _cups_md5_init(&state); | |
1966 | _cups_md5_append(&state, (unsigned char *)pw, pwlen); | |
1967 | _cups_md5_append(&state, (unsigned char *)salt, salt_end - salt); | |
1968 | ||
1969 | _cups_md5_init(&state2); | |
1970 | _cups_md5_append(&state2, (unsigned char *)pw, pwlen); | |
1971 | _cups_md5_append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
1972 | _cups_md5_append(&state2, (unsigned char *)pw, pwlen); | |
1973 | _cups_md5_finish(&state2, digest); | |
1974 | ||
1975 | for (i = pwlen; i > 0; i -= 16) | |
1976 | _cups_md5_append(&state, digest, i > 16 ? 16 : i); | |
1977 | ||
1978 | for (i = pwlen; i > 0; i >>= 1) | |
1979 | _cups_md5_append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); | |
1980 | ||
1981 | _cups_md5_finish(&state, digest); | |
1982 | ||
1983 | for (i = 0; i < 1000; i ++) | |
1984 | { | |
1985 | _cups_md5_init(&state); | |
1986 | ||
1987 | if (i & 1) | |
1988 | _cups_md5_append(&state, (unsigned char *)pw, pwlen); | |
1989 | else | |
1990 | _cups_md5_append(&state, digest, 16); | |
1991 | ||
1992 | if (i % 3) | |
1993 | _cups_md5_append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); | |
1994 | ||
1995 | if (i % 7) | |
1996 | _cups_md5_append(&state, (unsigned char *)pw, pwlen); | |
1997 | ||
1998 | if (i & 1) | |
1999 | _cups_md5_append(&state, digest, 16); | |
2000 | else | |
2001 | _cups_md5_append(&state, (unsigned char *)pw, pwlen); | |
2002 | ||
2003 | _cups_md5_finish(&state, digest); | |
2004 | } | |
2005 | ||
2006 | /* | |
2007 | * Copy the final sum to the result string and return... | |
2008 | */ | |
2009 | ||
2010 | memcpy(result, salt, salt_end - salt); | |
2011 | ptr = result + (salt_end - salt); | |
2012 | *ptr++ = '$'; | |
2013 | ||
2014 | for (i = 0; i < 5; i ++, ptr += 4) | |
2015 | { | |
2016 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
2017 | ||
2018 | if (i < 4) | |
2019 | n |= digest[i + 12]; | |
2020 | else | |
2021 | n |= digest[5]; | |
2022 | ||
2023 | to64(ptr, n, 4); | |
2024 | } | |
2025 | ||
2026 | to64(ptr, digest[11], 2); | |
2027 | ptr += 2; | |
2028 | *ptr = '\0'; | |
2029 | ||
2030 | return (result); | |
2031 | } | |
2032 | else | |
2033 | { | |
2034 | /* | |
2035 | * Use the standard crypt() function... | |
2036 | */ | |
2037 | ||
2038 | return (crypt(pw, salt)); | |
2039 | } | |
2040 | } | |
2041 | #endif /* !HAVE_LIBPAM */ | |
2042 | ||
2043 | ||
2044 | #if HAVE_LIBPAM | |
2045 | /* | |
2046 | * 'pam_func()' - PAM conversation function. | |
2047 | */ | |
2048 | ||
2049 | static int /* O - Success or failure */ | |
2050 | pam_func( | |
2051 | int num_msg, /* I - Number of messages */ | |
2052 | const struct pam_message **msg, /* I - Messages */ | |
2053 | struct pam_response **resp, /* O - Responses */ | |
2054 | void *appdata_ptr) | |
2055 | /* I - Pointer to connection */ | |
2056 | { | |
2057 | int i; /* Looping var */ | |
2058 | struct pam_response *replies; /* Replies */ | |
2059 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2060 | ||
2061 | ||
2062 | /* | |
2063 | * Allocate memory for the responses... | |
2064 | */ | |
2065 | ||
2066 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2067 | return (PAM_CONV_ERR); | |
2068 | ||
2069 | /* | |
2070 | * Answer all of the messages... | |
2071 | */ | |
2072 | ||
2073 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2074 | ||
2075 | #ifdef __hpux | |
2076 | /* | |
2077 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2078 | * module. This is a workaround... | |
2079 | */ | |
2080 | ||
2081 | data = auth_data; | |
2082 | (void)appdata_ptr; | |
2083 | #else | |
2084 | data = (cupsd_authdata_t *)appdata_ptr; | |
2085 | #endif /* __hpux */ | |
2086 | ||
2087 | for (i = 0; i < num_msg; i ++) | |
2088 | { | |
2089 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2090 | ||
2091 | switch (msg[i]->msg_style) | |
2092 | { | |
2093 | case PAM_PROMPT_ECHO_ON: | |
2094 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2095 | data->username)); | |
2096 | replies[i].resp_retcode = PAM_SUCCESS; | |
2097 | replies[i].resp = strdup(data->username); | |
2098 | break; | |
2099 | ||
2100 | case PAM_PROMPT_ECHO_OFF: | |
2101 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2102 | data->password)); | |
2103 | replies[i].resp_retcode = PAM_SUCCESS; | |
2104 | replies[i].resp = strdup(data->password); | |
2105 | break; | |
2106 | ||
2107 | case PAM_TEXT_INFO: | |
2108 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2109 | replies[i].resp_retcode = PAM_SUCCESS; | |
2110 | replies[i].resp = NULL; | |
2111 | break; | |
2112 | ||
2113 | case PAM_ERROR_MSG: | |
2114 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2115 | replies[i].resp_retcode = PAM_SUCCESS; | |
2116 | replies[i].resp = NULL; | |
2117 | break; | |
2118 | ||
2119 | default: | |
2120 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2121 | msg[i]->msg_style)); | |
2122 | free(replies); | |
2123 | return (PAM_CONV_ERR); | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | /* | |
2128 | * Return the responses back to PAM... | |
2129 | */ | |
2130 | ||
2131 | *resp = replies; | |
2132 | ||
2133 | return (PAM_SUCCESS); | |
2134 | } | |
2135 | #else | |
2136 | ||
2137 | ||
2138 | /* | |
2139 | * 'to64()' - Base64-encode an integer value... | |
2140 | */ | |
2141 | ||
2142 | static void | |
2143 | to64(char *s, /* O - Output string */ | |
2144 | unsigned long v, /* I - Value to encode */ | |
2145 | int n) /* I - Number of digits */ | |
2146 | { | |
2147 | const char *itoa64 = "./0123456789" | |
2148 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2149 | "abcdefghijklmnopqrstuvwxyz"; | |
2150 | ||
2151 | ||
2152 | for (; n > 0; n --, v >>= 6) | |
2153 | *s++ = itoa64[v & 0x3f]; | |
2154 | } | |
2155 | #endif /* HAVE_LIBPAM */ | |
2156 | ||
2157 | ||
2158 | /* | |
bd7854cb | 2159 | * End of "$Id: auth.c 5083 2006-02-06 02:57:43Z mike $". |
ef416fc2 | 2160 | */ |