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b423cd4c | 1 | /* |
80ca4592 | 2 | * "$Id: auth.c 5336 2006-03-24 16:37:29Z 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. | |
ef416fc2 | 44 | * cupsdIsAuthorized() - Check to see if the user is authorized... |
45 | * add_allow() - Add an allow mask to the location. | |
46 | * add_deny() - Add a deny mask to the location. | |
bd7854cb | 47 | * compare_locations() - Compare two locations. |
ef416fc2 | 48 | * cups_crypt() - Encrypt the password using the DES or MD5 |
49 | * algorithms, as needed. | |
e1d6a774 | 50 | * get_md5_password() - Get an MD5 password. |
ef416fc2 | 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 */ | |
e1d6a774 | 93 | static char *get_md5_password(const char *username, |
94 | const char *group, char passwd[33]); | |
ef416fc2 | 95 | #if HAVE_LIBPAM |
96 | static int pam_func(int, const struct pam_message **, | |
97 | struct pam_response **, void *); | |
98 | #else | |
99 | static void to64(char *s, unsigned long v, int n); | |
100 | #endif /* HAVE_LIBPAM */ | |
101 | ||
102 | ||
103 | /* | |
104 | * Local structures... | |
105 | */ | |
106 | ||
107 | #if HAVE_LIBPAM | |
108 | typedef struct cupsd_authdata_s /**** Authentication data ****/ | |
109 | { | |
110 | char username[33], /* Username string */ | |
111 | password[33]; /* Password string */ | |
112 | } cupsd_authdata_t; | |
113 | #endif /* HAVE_LIBPAM */ | |
114 | ||
115 | ||
116 | /* | |
117 | * Local globals... | |
118 | */ | |
119 | ||
120 | #if defined(__hpux) && defined(HAVE_LIBPAM) | |
b423cd4c | 121 | static cupsd_authdata_t *auth_data; /* Current client being authenticated */ |
ef416fc2 | 122 | #endif /* __hpux && HAVE_LIBPAM */ |
123 | ||
124 | ||
125 | /* | |
126 | * 'cupsdAddLocation()' - Add a location for authorization. | |
127 | */ | |
128 | ||
129 | cupsd_location_t * /* O - Pointer to new location record */ | |
130 | cupsdAddLocation(const char *location) /* I - Location path */ | |
131 | { | |
132 | cupsd_location_t *temp; /* New location */ | |
133 | ||
134 | ||
135 | /* | |
bd7854cb | 136 | * Make sure the locations array is created... |
ef416fc2 | 137 | */ |
138 | ||
bd7854cb | 139 | if (!Locations) |
140 | Locations = cupsArrayNew((cups_array_func_t)compare_locations, NULL); | |
ef416fc2 | 141 | |
bd7854cb | 142 | if (!Locations) |
ef416fc2 | 143 | return (NULL); |
144 | ||
bd7854cb | 145 | /* |
146 | * Try to allocate memory for the new location. | |
147 | */ | |
148 | ||
149 | if ((temp = calloc(1, sizeof(cupsd_location_t))) == NULL) | |
150 | return (NULL); | |
ef416fc2 | 151 | |
152 | /* | |
153 | * Initialize the record and copy the name over... | |
154 | */ | |
155 | ||
bd7854cb | 156 | temp->location = strdup(location); |
157 | temp->length = strlen(temp->location); | |
ef416fc2 | 158 | |
bd7854cb | 159 | cupsArrayAdd(Locations, temp); |
160 | ||
161 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddLocation: added location \'%s\'", | |
ef416fc2 | 162 | location); |
163 | ||
164 | /* | |
165 | * Return the new record... | |
166 | */ | |
167 | ||
168 | return (temp); | |
169 | } | |
170 | ||
171 | ||
172 | /* | |
173 | * 'cupsdAddName()' - Add a name to a location... | |
174 | */ | |
175 | ||
176 | void | |
177 | cupsdAddName(cupsd_location_t *loc, /* I - Location to add to */ | |
178 | char *name) /* I - Name to add */ | |
179 | { | |
180 | char **temp; /* Pointer to names array */ | |
181 | ||
182 | ||
183 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddName(loc=%p, name=\"%s\")", | |
184 | loc, name); | |
185 | ||
186 | if (loc->num_names == 0) | |
187 | temp = malloc(sizeof(char *)); | |
188 | else | |
189 | temp = realloc(loc->names, (loc->num_names + 1) * sizeof(char *)); | |
190 | ||
191 | if (temp == NULL) | |
192 | { | |
193 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to add name to location %s: %s", | |
e1d6a774 | 194 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 195 | return; |
196 | } | |
197 | ||
198 | loc->names = temp; | |
199 | ||
200 | if ((temp[loc->num_names] = strdup(name)) == NULL) | |
201 | { | |
202 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
203 | "Unable to duplicate name for location %s: %s", | |
e1d6a774 | 204 | loc->location ? loc->location : "nil", strerror(errno)); |
ef416fc2 | 205 | return; |
206 | } | |
207 | ||
208 | loc->num_names ++; | |
209 | } | |
210 | ||
211 | ||
212 | /* | |
213 | * 'cupsdAllowHost()' - Add a host name that is allowed to access the location. | |
214 | */ | |
215 | ||
216 | void | |
217 | cupsdAllowHost(cupsd_location_t *loc, /* I - Location to add to */ | |
218 | char *name) /* I - Name of host or domain to add */ | |
219 | { | |
220 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
221 | char ifname[32], /* Interface name */ | |
222 | *ifptr; /* Pointer to end of name */ | |
223 | ||
224 | ||
225 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAllowHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 226 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 227 | |
228 | if ((temp = add_allow(loc)) == NULL) | |
229 | return; | |
230 | ||
bd7854cb | 231 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 232 | { |
233 | /* | |
234 | * Allow *interface*... | |
235 | */ | |
236 | ||
237 | temp->type = AUTH_INTERFACE; | |
238 | temp->mask.name.name = strdup("*"); | |
239 | temp->mask.name.length = 1; | |
240 | } | |
bd7854cb | 241 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 242 | { |
243 | /* | |
244 | * Allow *interface*... | |
245 | */ | |
246 | ||
247 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
248 | ||
249 | ifptr = ifname + strlen(ifname); | |
250 | ||
251 | if (ifptr[-1] == ')') | |
252 | { | |
253 | ifptr --; | |
254 | *ifptr = '\0'; | |
255 | } | |
256 | ||
257 | temp->type = AUTH_INTERFACE; | |
258 | temp->mask.name.name = strdup(ifname); | |
259 | temp->mask.name.length = ifptr - ifname; | |
260 | } | |
261 | else | |
262 | { | |
263 | /* | |
264 | * Allow name... | |
265 | */ | |
266 | ||
267 | temp->type = AUTH_NAME; | |
268 | temp->mask.name.name = strdup(name); | |
269 | temp->mask.name.length = strlen(name); | |
270 | } | |
271 | } | |
272 | ||
273 | ||
274 | /* | |
275 | * 'cupsdAllowIP()' - Add an IP address or network that is allowed to access | |
276 | * the location. | |
277 | */ | |
278 | ||
279 | void | |
280 | cupsdAllowIP(cupsd_location_t *loc, /* I - Location to add to */ | |
281 | unsigned address[4], /* I - IP address to add */ | |
282 | unsigned netmask[4]) /* I - Netmask of address */ | |
283 | { | |
284 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
285 | ||
286 | ||
287 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
288 | "cupsdAllowIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 289 | loc, loc->location ? loc->location : "nil", |
290 | address[0], address[1], address[2], address[3], | |
291 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 292 | |
293 | if ((temp = add_allow(loc)) == NULL) | |
294 | return; | |
295 | ||
296 | temp->type = AUTH_IP; | |
297 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
298 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * 'cupsdAuthorize()' - Validate any authorization credentials. | |
304 | */ | |
305 | ||
306 | void | |
307 | cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ | |
308 | { | |
309 | int type; /* Authentication type */ | |
310 | char *authorization, /* Pointer into Authorization string */ | |
311 | *ptr, /* Pointer into string */ | |
312 | username[65], /* Username string */ | |
313 | password[33]; /* Password string */ | |
314 | const char *localuser; /* Certificate username */ | |
315 | char nonce[HTTP_MAX_VALUE], /* Nonce value from client */ | |
316 | md5[33], /* MD5 password */ | |
317 | basicmd5[33]; /* MD5 of Basic password */ | |
318 | static const char * const states[] = /* HTTP client states... */ | |
319 | { | |
320 | "WAITING", | |
321 | "OPTIONS", | |
322 | "GET", | |
323 | "GET", | |
324 | "HEAD", | |
325 | "POST", | |
326 | "POST", | |
327 | "POST", | |
328 | "PUT", | |
329 | "PUT", | |
330 | "DELETE", | |
331 | "TRACE", | |
332 | "CLOSE", | |
333 | "STATUS" | |
334 | }; | |
335 | ||
336 | ||
337 | /* | |
338 | * Locate the best matching location so we know what kind of | |
339 | * authentication to expect... | |
340 | */ | |
341 | ||
342 | con->best = cupsdFindBest(con->uri, con->http.state); | |
343 | ||
344 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
345 | "cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)", | |
346 | con->uri, con->best, con->best ? con->best->location : ""); | |
347 | ||
348 | if (con->best && con->best->type != AUTH_NONE) | |
349 | type = con->best->type; | |
350 | else | |
351 | type = DefaultAuthType; | |
352 | ||
353 | /* | |
354 | * Decode the Authorization string... | |
355 | */ | |
356 | ||
357 | authorization = con->http.fields[HTTP_FIELD_AUTHORIZATION]; | |
358 | ||
359 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAuthorize: Authorization=\"%s\"", | |
360 | authorization); | |
361 | ||
362 | username[0] = '\0'; | |
363 | password[0] = '\0'; | |
364 | ||
365 | if (type == AUTH_NONE) | |
366 | { | |
367 | /* | |
368 | * No authorization required, return early... | |
369 | */ | |
370 | ||
371 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
372 | "cupsdAuthorize: No authentication required."); | |
373 | return; | |
374 | } | |
375 | else if (!*authorization) | |
376 | { | |
377 | /* | |
378 | * No authorization data provided, return early... | |
379 | */ | |
380 | ||
381 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
382 | "cupsdAuthorize: No authentication data provided."); | |
383 | return; | |
384 | } | |
385 | else if (!strncmp(authorization, "Local", 5) && | |
386 | !strcasecmp(con->http.hostname, "localhost")) | |
387 | { | |
388 | /* | |
389 | * Get Local certificate authentication data... | |
390 | */ | |
391 | ||
392 | authorization += 5; | |
80ca4592 | 393 | while (isspace(*authorization & 255)) |
ef416fc2 | 394 | authorization ++; |
395 | ||
396 | if ((localuser = cupsdFindCert(authorization)) != NULL) | |
397 | strlcpy(username, localuser, sizeof(username)); | |
398 | else | |
399 | { | |
400 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
401 | "cupsdAuthorize: Local authentication certificate not " | |
402 | "found!"); | |
403 | return; | |
404 | } | |
405 | } | |
406 | else if (!strncmp(authorization, "Basic", 5) && | |
407 | (type == AUTH_BASIC || type == AUTH_BASICDIGEST)) | |
408 | { | |
409 | /* | |
410 | * Get the Basic authentication data... | |
411 | */ | |
412 | ||
413 | int userlen; /* Username:password length */ | |
414 | ||
415 | ||
416 | authorization += 5; | |
80ca4592 | 417 | while (isspace(*authorization & 255)) |
ef416fc2 | 418 | authorization ++; |
419 | ||
420 | userlen = sizeof(username); | |
421 | httpDecode64_2(username, &userlen, authorization); | |
422 | ||
423 | /* | |
424 | * Pull the username and password out... | |
425 | */ | |
426 | ||
427 | if ((ptr = strchr(username, ':')) == NULL) | |
428 | { | |
429 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
430 | "cupsdAuthorize: Missing Basic password!"); | |
431 | return; | |
432 | } | |
433 | ||
434 | *ptr++ = '\0'; | |
435 | ||
436 | if (!username[0]) | |
437 | { | |
438 | /* | |
439 | * Username must not be empty... | |
440 | */ | |
441 | ||
442 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
443 | "cupsdAuthorize: Empty Basic username!"); | |
444 | return; | |
445 | } | |
446 | ||
447 | if (!*ptr) | |
448 | { | |
449 | /* | |
450 | * Password must not be empty... | |
451 | */ | |
452 | ||
453 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
454 | "cupsdAuthorize: Empty Basic password!"); | |
455 | return; | |
456 | } | |
457 | ||
458 | strlcpy(password, ptr, sizeof(password)); | |
459 | ||
460 | /* | |
461 | * Validate the username and password... | |
462 | */ | |
463 | ||
464 | switch (type) | |
465 | { | |
466 | case AUTH_BASIC : | |
467 | { | |
468 | #if HAVE_LIBPAM | |
469 | /* | |
470 | * Only use PAM to do authentication. This supports MD5 | |
471 | * passwords, among other things... | |
472 | */ | |
473 | ||
474 | pam_handle_t *pamh; /* PAM authentication handle */ | |
475 | int pamerr; /* PAM error code */ | |
476 | struct pam_conv pamdata;/* PAM conversation data */ | |
477 | cupsd_authdata_t data; /* Authentication data */ | |
478 | ||
479 | ||
480 | strlcpy(data.username, username, sizeof(data.username)); | |
481 | strlcpy(data.password, password, sizeof(data.password)); | |
482 | ||
e1d6a774 | 483 | # ifdef __sun |
484 | pamdata.conv = (int (*)(int, struct pam_message **, | |
485 | struct pam_response **, | |
486 | void *))pam_func; | |
487 | # else | |
ef416fc2 | 488 | pamdata.conv = pam_func; |
e1d6a774 | 489 | # endif /* __sun */ |
ef416fc2 | 490 | pamdata.appdata_ptr = &data; |
491 | ||
492 | # ifdef __hpux | |
493 | /* | |
494 | * Workaround for HP-UX bug in pam_unix; see pam_func() below for | |
495 | * more info... | |
496 | */ | |
497 | ||
498 | auth_data = &data; | |
499 | # endif /* __hpux */ | |
500 | ||
501 | pamerr = pam_start("cups", username, &pamdata, &pamh); | |
502 | if (pamerr != PAM_SUCCESS) | |
503 | { | |
504 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
505 | "cupsdAuthorize: pam_start() returned %d (%s)!\n", | |
506 | pamerr, pam_strerror(pamh, pamerr)); | |
507 | pam_end(pamh, 0); | |
508 | return; | |
509 | } | |
510 | ||
511 | pamerr = pam_authenticate(pamh, PAM_SILENT); | |
512 | if (pamerr != PAM_SUCCESS) | |
513 | { | |
514 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
515 | "cupsdAuthorize: pam_authenticate() returned %d " | |
516 | "(%s)!\n", | |
517 | pamerr, pam_strerror(pamh, pamerr)); | |
518 | pam_end(pamh, 0); | |
519 | return; | |
520 | } | |
521 | ||
522 | pamerr = pam_acct_mgmt(pamh, PAM_SILENT); | |
523 | if (pamerr != PAM_SUCCESS) | |
524 | { | |
525 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
526 | "cupsdAuthorize: pam_acct_mgmt() returned %d " | |
527 | "(%s)!\n", | |
528 | pamerr, pam_strerror(pamh, pamerr)); | |
529 | pam_end(pamh, 0); | |
530 | return; | |
531 | } | |
532 | ||
533 | pam_end(pamh, PAM_SUCCESS); | |
534 | ||
535 | #elif defined(HAVE_USERSEC_H) | |
536 | /* | |
537 | * Use AIX authentication interface... | |
538 | */ | |
539 | ||
540 | char *authmsg; /* Authentication message */ | |
541 | char *loginmsg; /* Login message */ | |
542 | int reenter; /* ??? */ | |
543 | ||
544 | ||
545 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
546 | "cupsdAuthorize: AIX authenticate of username \"%s\"", | |
547 | username); | |
548 | ||
549 | reenter = 1; | |
550 | if (authenticate(username, password, &reenter, &authmsg) != 0) | |
551 | { | |
552 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
553 | "cupsdAuthorize: Unable to authenticate username " | |
554 | "\"%s\": %s", | |
555 | username, strerror(errno)); | |
556 | return; | |
557 | } | |
558 | ||
559 | #else | |
560 | /* | |
561 | * Use normal UNIX password file-based authentication... | |
562 | */ | |
563 | ||
564 | char *pass; /* Encrypted password */ | |
565 | struct passwd *pw; /* User password data */ | |
566 | # ifdef HAVE_SHADOW_H | |
567 | struct spwd *spw; /* Shadow password data */ | |
568 | # endif /* HAVE_SHADOW_H */ | |
569 | ||
570 | ||
571 | pw = getpwnam(username); /* Get the current password */ | |
572 | endpwent(); /* Close the password file */ | |
573 | ||
574 | if (!pw) | |
575 | { | |
576 | /* | |
577 | * No such user... | |
578 | */ | |
579 | ||
580 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
581 | "cupsdAuthorize: Unknown username \"%s\"!", | |
582 | username); | |
80ca4592 | 583 | return; |
ef416fc2 | 584 | } |
585 | ||
586 | # ifdef HAVE_SHADOW_H | |
587 | spw = getspnam(username); | |
588 | endspent(); | |
589 | ||
590 | if (!spw && !strcmp(pw->pw_passwd, "x")) | |
591 | { | |
592 | /* | |
593 | * Don't allow blank passwords! | |
594 | */ | |
595 | ||
596 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
597 | "cupsdAuthorize: Username \"%s\" has no shadow " | |
598 | "password!", username); | |
599 | return; | |
600 | } | |
601 | ||
602 | if (spw && !spw->sp_pwdp[0] && !pw->pw_passwd[0]) | |
603 | # else | |
604 | if (!pw->pw_passwd[0]) | |
605 | # endif /* HAVE_SHADOW_H */ | |
606 | { | |
607 | /* | |
608 | * Don't allow blank passwords! | |
609 | */ | |
610 | ||
611 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
612 | "cupsdAuthorize: Username \"%s\" has no password!", | |
613 | username); | |
614 | return; | |
615 | } | |
616 | ||
617 | /* | |
618 | * OK, the password isn't blank, so compare with what came from the | |
619 | * client... | |
620 | */ | |
621 | ||
622 | pass = cups_crypt(password, pw->pw_passwd); | |
623 | ||
624 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
625 | "cupsdAuthorize: pw_passwd=\"%s\", crypt=\"%s\"", | |
626 | pw->pw_passwd, pass); | |
627 | ||
628 | if (!pass || strcmp(pw->pw_passwd, pass)) | |
629 | { | |
630 | # ifdef HAVE_SHADOW_H | |
631 | if (spw) | |
632 | { | |
633 | pass = cups_crypt(password, spw->sp_pwdp); | |
634 | ||
635 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
636 | "cupsdAuthorize: sp_pwdp=\"%s\", crypt=\"%s\"", | |
637 | spw->sp_pwdp, pass); | |
638 | ||
639 | if (pass == NULL || strcmp(spw->sp_pwdp, pass)) | |
640 | { | |
641 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
642 | "cupsdAuthorize: Authentication failed for " | |
643 | "user \"%s\"!", | |
644 | username); | |
645 | return; | |
646 | } | |
647 | } | |
648 | else | |
649 | # endif /* HAVE_SHADOW_H */ | |
650 | { | |
651 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
652 | "cupsdAuthorize: Authentication failed for " | |
653 | "user \"%s\"!", | |
654 | username); | |
655 | return; | |
656 | } | |
657 | } | |
658 | #endif /* HAVE_LIBPAM */ | |
659 | } | |
660 | break; | |
661 | ||
662 | case AUTH_BASICDIGEST : | |
663 | /* | |
664 | * Do Basic authentication with the Digest password file... | |
665 | */ | |
666 | ||
e1d6a774 | 667 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 668 | { |
669 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
670 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
671 | username); | |
672 | return; | |
673 | } | |
674 | ||
675 | httpMD5(username, "CUPS", password, basicmd5); | |
676 | ||
677 | if (strcmp(md5, basicmd5)) | |
678 | { | |
679 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
680 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
681 | username); | |
682 | return; | |
683 | } | |
684 | break; | |
685 | } | |
686 | } | |
687 | else if (!strncmp(authorization, "Digest", 6) && type == AUTH_DIGEST) | |
688 | { | |
689 | /* | |
690 | * Get the username, password, and nonce from the Digest attributes... | |
691 | */ | |
692 | ||
693 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "username", | |
694 | username, sizeof(username)) || !username[0]) | |
695 | { | |
696 | /* | |
697 | * Username must not be empty... | |
698 | */ | |
699 | ||
700 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
701 | "cupsdAuthorize: Empty or missing Digest username!"); | |
702 | return; | |
703 | } | |
704 | ||
705 | if (!httpGetSubField2(&(con->http), HTTP_FIELD_AUTHORIZATION, "response", | |
706 | password, sizeof(password)) || !password[0]) | |
707 | { | |
708 | /* | |
709 | * Password must not be empty... | |
710 | */ | |
711 | ||
712 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
713 | "cupsdAuthorize: Empty or missing Digest password!"); | |
714 | return; | |
715 | } | |
716 | ||
717 | if (!httpGetSubField(&(con->http), HTTP_FIELD_AUTHORIZATION, "nonce", | |
718 | nonce)) | |
719 | { | |
720 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
721 | "cupsdAuthorize: No nonce value for Digest " | |
722 | "authentication!"); | |
723 | return; | |
724 | } | |
725 | ||
726 | if (strcmp(con->http.hostname, nonce)) | |
727 | { | |
728 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
729 | "cupsdAuthorize: Bad nonce value, expected \"%s\", " | |
730 | "got \"%s\"!", con->http.hostname, nonce); | |
731 | return; | |
732 | } | |
733 | ||
734 | /* | |
735 | * Validate the username and password... | |
736 | */ | |
737 | ||
e1d6a774 | 738 | if (!get_md5_password(username, NULL, md5)) |
ef416fc2 | 739 | { |
740 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
741 | "cupsdAuthorize: Unknown MD5 username \"%s\"!", | |
742 | username); | |
743 | return; | |
744 | } | |
745 | ||
746 | httpMD5Final(nonce, states[con->http.state], con->uri, md5); | |
747 | ||
748 | if (strcmp(md5, password)) | |
749 | { | |
750 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
751 | "cupsdAuthorize: Authentication failed for \"%s\"!", | |
752 | username); | |
753 | return; | |
754 | } | |
755 | } | |
756 | else | |
757 | { | |
758 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
759 | "cupsdAuthorize: Bad authentication data."); | |
760 | return; | |
761 | } | |
762 | ||
763 | /* | |
764 | * If we get here, then we were able to validate the username and | |
765 | * password - copy the validated username and password to the client | |
766 | * data and return... | |
767 | */ | |
768 | ||
769 | strlcpy(con->username, username, sizeof(con->username)); | |
770 | strlcpy(con->password, password, sizeof(con->password)); | |
771 | ||
772 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: username=\"%s\"", | |
773 | con->username); | |
774 | } | |
775 | ||
776 | ||
777 | /* | |
778 | * 'cupsdCheckAuth()' - Check authorization masks. | |
779 | */ | |
780 | ||
781 | int /* O - 1 if mask matches, 0 otherwise */ | |
782 | cupsdCheckAuth( | |
783 | unsigned ip[4], /* I - Client address */ | |
784 | char *name, /* I - Client hostname */ | |
785 | int name_len, /* I - Length of hostname */ | |
786 | int num_masks, /* I - Number of masks */ | |
787 | cupsd_authmask_t *masks) /* I - Masks */ | |
788 | { | |
789 | int i; /* Looping var */ | |
790 | cupsd_netif_t *iface; /* Network interface */ | |
791 | unsigned netip4; /* IPv4 network address */ | |
792 | #ifdef AF_INET6 | |
793 | unsigned netip6[4]; /* IPv6 network address */ | |
794 | #endif /* AF_INET6 */ | |
795 | ||
796 | while (num_masks > 0) | |
797 | { | |
798 | switch (masks->type) | |
799 | { | |
800 | case AUTH_INTERFACE : | |
801 | /* | |
802 | * Check for a match with a network interface... | |
803 | */ | |
804 | ||
805 | netip4 = htonl(ip[3]); | |
806 | ||
807 | #ifdef AF_INET6 | |
808 | netip6[0] = htonl(ip[0]); | |
809 | netip6[1] = htonl(ip[1]); | |
810 | netip6[2] = htonl(ip[2]); | |
811 | netip6[3] = htonl(ip[3]); | |
812 | #endif /* AF_INET6 */ | |
813 | ||
814 | if (!strcmp(masks->mask.name.name, "*")) | |
815 | { | |
816 | /* | |
817 | * Check against all local interfaces... | |
818 | */ | |
819 | ||
820 | cupsdNetIFUpdate(); | |
821 | ||
e00b005a | 822 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
823 | iface; | |
824 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 825 | { |
826 | /* | |
827 | * Only check local interfaces... | |
828 | */ | |
829 | ||
830 | if (!iface->is_local) | |
831 | continue; | |
832 | ||
833 | if (iface->address.addr.sa_family == AF_INET) | |
834 | { | |
835 | /* | |
836 | * Check IPv4 address... | |
837 | */ | |
838 | ||
839 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
840 | (iface->address.ipv4.sin_addr.s_addr & | |
841 | iface->mask.ipv4.sin_addr.s_addr)) | |
842 | return (1); | |
843 | } | |
844 | #ifdef AF_INET6 | |
845 | else | |
846 | { | |
847 | /* | |
848 | * Check IPv6 address... | |
849 | */ | |
850 | ||
851 | for (i = 0; i < 4; i ++) | |
852 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
853 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
854 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
855 | break; | |
856 | ||
857 | if (i == 4) | |
858 | return (1); | |
859 | } | |
860 | #endif /* AF_INET6 */ | |
861 | } | |
862 | } | |
863 | else | |
864 | { | |
865 | /* | |
866 | * Check the named interface... | |
867 | */ | |
868 | ||
e00b005a | 869 | for (iface = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
870 | iface && !strcmp(masks->mask.name.name, iface->name); | |
871 | iface = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 872 | { |
873 | if (iface->address.addr.sa_family == AF_INET) | |
874 | { | |
875 | /* | |
876 | * Check IPv4 address... | |
877 | */ | |
878 | ||
879 | if ((netip4 & iface->mask.ipv4.sin_addr.s_addr) == | |
880 | (iface->address.ipv4.sin_addr.s_addr & | |
881 | iface->mask.ipv4.sin_addr.s_addr)) | |
882 | return (1); | |
883 | } | |
884 | #ifdef AF_INET6 | |
885 | else | |
886 | { | |
887 | /* | |
888 | * Check IPv6 address... | |
889 | */ | |
890 | ||
891 | for (i = 0; i < 4; i ++) | |
892 | if ((netip6[i] & iface->mask.ipv6.sin6_addr.s6_addr32[i]) != | |
893 | (iface->address.ipv6.sin6_addr.s6_addr32[i] & | |
894 | iface->mask.ipv6.sin6_addr.s6_addr32[i])) | |
895 | break; | |
896 | ||
897 | if (i == 4) | |
898 | return (1); | |
899 | } | |
900 | #endif /* AF_INET6 */ | |
901 | } | |
902 | } | |
903 | break; | |
904 | ||
905 | case AUTH_NAME : | |
906 | /* | |
907 | * Check for exact name match... | |
908 | */ | |
909 | ||
910 | if (!strcasecmp(name, masks->mask.name.name)) | |
911 | return (1); | |
912 | ||
913 | /* | |
914 | * Check for domain match... | |
915 | */ | |
916 | ||
917 | if (name_len >= masks->mask.name.length && | |
918 | masks->mask.name.name[0] == '.' && | |
bd7854cb | 919 | !strcasecmp(name + name_len - masks->mask.name.length, |
920 | masks->mask.name.name)) | |
ef416fc2 | 921 | return (1); |
922 | break; | |
923 | ||
924 | case AUTH_IP : | |
925 | /* | |
926 | * Check for IP/network address match... | |
927 | */ | |
928 | ||
929 | for (i = 0; i < 4; i ++) | |
930 | if ((ip[i] & masks->mask.ip.netmask[i]) != | |
931 | masks->mask.ip.address[i]) | |
932 | break; | |
933 | ||
934 | if (i == 4) | |
935 | return (1); | |
936 | break; | |
937 | } | |
938 | ||
939 | masks ++; | |
940 | num_masks --; | |
941 | } | |
942 | ||
943 | return (0); | |
944 | } | |
945 | ||
946 | ||
947 | /* | |
948 | * 'cupsdCheckGroup()' - Check for a user's group membership. | |
949 | */ | |
950 | ||
951 | int /* O - 1 if user is a member, 0 otherwise */ | |
952 | cupsdCheckGroup( | |
953 | const char *username, /* I - User name */ | |
954 | struct passwd *user, /* I - System user info */ | |
955 | const char *groupname) /* I - Group name */ | |
956 | { | |
957 | int i; /* Looping var */ | |
958 | struct group *group; /* System group info */ | |
959 | char junk[33]; /* MD5 password (not used) */ | |
bd7854cb | 960 | #ifdef HAVE_MBR_UID_TO_UUID |
961 | uuid_t useruuid, /* UUID for username */ | |
962 | groupuuid; /* UUID for groupname */ | |
963 | int is_member; /* True if user is a member of group */ | |
964 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
ef416fc2 | 965 | |
966 | ||
967 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
968 | "cupsdCheckGroup(username=\"%s\", user=%p, groupname=\"%s\")", | |
969 | username, user, groupname); | |
970 | ||
971 | /* | |
972 | * Validate input... | |
973 | */ | |
974 | ||
975 | if (!username || !groupname) | |
976 | return (0); | |
977 | ||
978 | /* | |
979 | * Check to see if the user is a member of the named group... | |
980 | */ | |
981 | ||
982 | group = getgrnam(groupname); | |
983 | endgrent(); | |
984 | ||
985 | if (group != NULL) | |
986 | { | |
987 | /* | |
988 | * Group exists, check it... | |
989 | */ | |
990 | ||
991 | for (i = 0; group->gr_mem[i]; i ++) | |
992 | if (!strcasecmp(username, group->gr_mem[i])) | |
993 | return (1); | |
994 | } | |
995 | ||
996 | /* | |
997 | * Group doesn't exist or user not in group list, check the group ID | |
998 | * against the user's group ID... | |
999 | */ | |
1000 | ||
1001 | if (user && group && group->gr_gid == user->pw_gid) | |
1002 | return (1); | |
1003 | ||
bd7854cb | 1004 | #ifdef HAVE_MBR_UID_TO_UUID |
1005 | /* | |
1006 | * Check group membership through MacOS X membership API... | |
1007 | */ | |
1008 | ||
1009 | if (user && group) | |
1010 | if (!mbr_uid_to_uuid(user->pw_uid, useruuid)) | |
1011 | if (!mbr_gid_to_uuid(group->gr_gid, groupuuid)) | |
1012 | if (!mbr_check_membership(useruuid, groupuuid, &is_member)) | |
1013 | if (is_member) | |
1014 | return (1); | |
1015 | #endif /* HAVE_MBR_UID_TO_UUID */ | |
1016 | ||
ef416fc2 | 1017 | /* |
1018 | * Username not found, group not found, or user is not part of the | |
1019 | * system group... Check for a user and group in the MD5 password | |
1020 | * file... | |
1021 | */ | |
1022 | ||
e1d6a774 | 1023 | if (get_md5_password(username, groupname, junk) != NULL) |
ef416fc2 | 1024 | return (1); |
1025 | ||
1026 | /* | |
1027 | * If we get this far, then the user isn't part of the named group... | |
1028 | */ | |
1029 | ||
1030 | return (0); | |
1031 | } | |
1032 | ||
1033 | ||
1034 | /* | |
1035 | * 'cupsdCopyLocation()' - Make a copy of a location... | |
1036 | */ | |
1037 | ||
1038 | cupsd_location_t * /* O - New location */ | |
1039 | cupsdCopyLocation( | |
1040 | cupsd_location_t **loc) /* IO - Original location */ | |
1041 | { | |
1042 | int i; /* Looping var */ | |
ef416fc2 | 1043 | cupsd_location_t *temp; /* New location */ |
1044 | char location[HTTP_MAX_URI]; | |
1045 | /* Location of resource */ | |
1046 | ||
1047 | ||
ef416fc2 | 1048 | /* |
1049 | * Use a local copy of location because cupsdAddLocation may cause | |
1050 | * this memory to be moved... | |
1051 | */ | |
1052 | ||
1053 | strlcpy(location, (*loc)->location, sizeof(location)); | |
1054 | ||
1055 | if ((temp = cupsdAddLocation(location)) == NULL) | |
1056 | return (NULL); | |
1057 | ||
ef416fc2 | 1058 | /* |
1059 | * Copy the information from the original location to the new one. | |
1060 | */ | |
1061 | ||
1062 | temp->limit = (*loc)->limit; | |
1063 | temp->order_type = (*loc)->order_type; | |
1064 | temp->type = (*loc)->type; | |
1065 | temp->level = (*loc)->level; | |
1066 | temp->satisfy = (*loc)->satisfy; | |
1067 | temp->encryption = (*loc)->encryption; | |
1068 | ||
1069 | if ((temp->num_names = (*loc)->num_names) > 0) | |
1070 | { | |
1071 | /* | |
1072 | * Copy the names array... | |
1073 | */ | |
1074 | ||
1075 | if ((temp->names = calloc(temp->num_names, sizeof(char *))) == NULL) | |
1076 | { | |
1077 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1078 | "cupsdCopyLocation: Unable to allocate memory for %d names: %s", | |
1079 | temp->num_names, strerror(errno)); | |
bd7854cb | 1080 | |
1081 | cupsdDeleteLocation(temp); | |
ef416fc2 | 1082 | return (NULL); |
1083 | } | |
1084 | ||
1085 | for (i = 0; i < temp->num_names; i ++) | |
1086 | if ((temp->names[i] = strdup((*loc)->names[i])) == NULL) | |
1087 | { | |
1088 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1089 | "cupsdCopyLocation: Unable to copy name \"%s\": %s", | |
1090 | (*loc)->names[i], strerror(errno)); | |
1091 | ||
bd7854cb | 1092 | cupsdDeleteLocation(temp); |
ef416fc2 | 1093 | return (NULL); |
1094 | } | |
1095 | } | |
1096 | ||
1097 | if ((temp->num_allow = (*loc)->num_allow) > 0) | |
1098 | { | |
1099 | /* | |
1100 | * Copy allow rules... | |
1101 | */ | |
1102 | ||
1103 | if ((temp->allow = calloc(temp->num_allow, sizeof(cupsd_authmask_t))) == NULL) | |
1104 | { | |
1105 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1106 | "cupsdCopyLocation: Unable to allocate memory for %d allow rules: %s", | |
1107 | temp->num_allow, strerror(errno)); | |
bd7854cb | 1108 | cupsdDeleteLocation(temp); |
ef416fc2 | 1109 | return (NULL); |
1110 | } | |
1111 | ||
1112 | for (i = 0; i < temp->num_allow; i ++) | |
1113 | switch (temp->allow[i].type = (*loc)->allow[i].type) | |
1114 | { | |
1115 | case AUTH_NAME : | |
1116 | temp->allow[i].mask.name.length = (*loc)->allow[i].mask.name.length; | |
1117 | temp->allow[i].mask.name.name = strdup((*loc)->allow[i].mask.name.name); | |
1118 | ||
1119 | if (temp->allow[i].mask.name.name == NULL) | |
1120 | { | |
1121 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1122 | "cupsdCopyLocation: Unable to copy allow name \"%s\": %s", | |
1123 | (*loc)->allow[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1124 | cupsdDeleteLocation(temp); |
ef416fc2 | 1125 | return (NULL); |
1126 | } | |
1127 | break; | |
1128 | case AUTH_IP : | |
1129 | memcpy(&(temp->allow[i].mask.ip), &((*loc)->allow[i].mask.ip), | |
1130 | sizeof(cupsd_ipmask_t)); | |
1131 | break; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | if ((temp->num_deny = (*loc)->num_deny) > 0) | |
1136 | { | |
1137 | /* | |
1138 | * Copy deny rules... | |
1139 | */ | |
1140 | ||
1141 | if ((temp->deny = calloc(temp->num_deny, sizeof(cupsd_authmask_t))) == NULL) | |
1142 | { | |
1143 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1144 | "cupsdCopyLocation: Unable to allocate memory for %d deny rules: %s", | |
1145 | temp->num_deny, strerror(errno)); | |
bd7854cb | 1146 | cupsdDeleteLocation(temp); |
ef416fc2 | 1147 | return (NULL); |
1148 | } | |
1149 | ||
1150 | for (i = 0; i < temp->num_deny; i ++) | |
1151 | switch (temp->deny[i].type = (*loc)->deny[i].type) | |
1152 | { | |
1153 | case AUTH_NAME : | |
1154 | temp->deny[i].mask.name.length = (*loc)->deny[i].mask.name.length; | |
1155 | temp->deny[i].mask.name.name = strdup((*loc)->deny[i].mask.name.name); | |
1156 | ||
1157 | if (temp->deny[i].mask.name.name == NULL) | |
1158 | { | |
1159 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1160 | "cupsdCopyLocation: Unable to copy deny name \"%s\": %s", | |
1161 | (*loc)->deny[i].mask.name.name, strerror(errno)); | |
bd7854cb | 1162 | cupsdDeleteLocation(temp); |
ef416fc2 | 1163 | return (NULL); |
1164 | } | |
1165 | break; | |
1166 | case AUTH_IP : | |
1167 | memcpy(&(temp->deny[i].mask.ip), &((*loc)->deny[i].mask.ip), | |
1168 | sizeof(cupsd_ipmask_t)); | |
1169 | break; | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | return (temp); | |
1174 | } | |
1175 | ||
1176 | ||
1177 | /* | |
1178 | * 'cupsdDeleteAllLocations()' - Free all memory used for location authorization. | |
1179 | */ | |
1180 | ||
1181 | void | |
1182 | cupsdDeleteAllLocations(void) | |
1183 | { | |
ef416fc2 | 1184 | cupsd_location_t *loc; /* Current location */ |
1185 | ||
1186 | ||
1187 | /* | |
1188 | * Free all of the allow/deny records first... | |
1189 | */ | |
1190 | ||
bd7854cb | 1191 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1192 | loc; | |
1193 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1194 | cupsdDeleteLocation(loc); |
1195 | ||
1196 | /* | |
1197 | * Then free the location array... | |
1198 | */ | |
1199 | ||
bd7854cb | 1200 | cupsArrayDelete(Locations); |
1201 | Locations = NULL; | |
ef416fc2 | 1202 | } |
1203 | ||
1204 | ||
1205 | /* | |
1206 | * 'cupsdDeleteLocation()' - Free all memory used by a location. | |
1207 | */ | |
1208 | ||
1209 | void | |
1210 | cupsdDeleteLocation( | |
1211 | cupsd_location_t *loc) /* I - Location to delete */ | |
1212 | { | |
1213 | int i; /* Looping var */ | |
1214 | cupsd_authmask_t *mask; /* Current mask */ | |
1215 | ||
1216 | ||
bd7854cb | 1217 | cupsArrayRemove(Locations, loc); |
1218 | ||
ef416fc2 | 1219 | for (i = loc->num_names - 1; i >= 0; i --) |
1220 | free(loc->names[i]); | |
1221 | ||
1222 | if (loc->num_names > 0) | |
1223 | free(loc->names); | |
1224 | ||
1225 | for (i = loc->num_allow, mask = loc->allow; i > 0; i --, mask ++) | |
1226 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1227 | free(mask->mask.name.name); | |
1228 | ||
1229 | if (loc->num_allow > 0) | |
1230 | free(loc->allow); | |
1231 | ||
1232 | for (i = loc->num_deny, mask = loc->deny; i > 0; i --, mask ++) | |
1233 | if (mask->type == AUTH_NAME || mask->type == AUTH_INTERFACE) | |
1234 | free(mask->mask.name.name); | |
1235 | ||
1236 | if (loc->num_deny > 0) | |
1237 | free(loc->deny); | |
bd7854cb | 1238 | |
1239 | free(loc->location); | |
1240 | free(loc); | |
ef416fc2 | 1241 | } |
1242 | ||
1243 | ||
1244 | /* | |
1245 | * 'cupsdDenyHost()' - Add a host name that is not allowed to access the | |
1246 | * location. | |
1247 | */ | |
1248 | ||
1249 | void | |
1250 | cupsdDenyHost(cupsd_location_t *loc, /* I - Location to add to */ | |
1251 | char *name) /* I - Name of host or domain to add */ | |
1252 | { | |
1253 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1254 | char ifname[32], /* Interface name */ | |
1255 | *ifptr; /* Pointer to end of name */ | |
1256 | ||
1257 | ||
1258 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdDenyHost(loc=%p(%s), name=\"%s\")", | |
e1d6a774 | 1259 | loc, loc->location ? loc->location : "nil", name); |
ef416fc2 | 1260 | |
1261 | if ((temp = add_deny(loc)) == NULL) | |
1262 | return; | |
1263 | ||
bd7854cb | 1264 | if (!strcasecmp(name, "@LOCAL")) |
ef416fc2 | 1265 | { |
1266 | /* | |
1267 | * Deny *interface*... | |
1268 | */ | |
1269 | ||
1270 | temp->type = AUTH_INTERFACE; | |
1271 | temp->mask.name.name = strdup("*"); | |
1272 | temp->mask.name.length = 1; | |
1273 | } | |
bd7854cb | 1274 | else if (!strncasecmp(name, "@IF(", 4)) |
ef416fc2 | 1275 | { |
1276 | /* | |
1277 | * Deny *interface*... | |
1278 | */ | |
1279 | ||
1280 | strlcpy(ifname, name + 4, sizeof(ifname)); | |
1281 | ||
1282 | ifptr = ifname + strlen(ifname); | |
1283 | ||
1284 | if (ifptr[-1] == ')') | |
1285 | { | |
1286 | ifptr --; | |
1287 | *ifptr = '\0'; | |
1288 | } | |
1289 | ||
1290 | temp->type = AUTH_INTERFACE; | |
1291 | temp->mask.name.name = strdup(ifname); | |
1292 | temp->mask.name.length = ifptr - ifname; | |
1293 | } | |
1294 | else | |
1295 | { | |
1296 | /* | |
1297 | * Deny name... | |
1298 | */ | |
1299 | ||
1300 | temp->type = AUTH_NAME; | |
1301 | temp->mask.name.name = strdup(name); | |
1302 | temp->mask.name.length = strlen(name); | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | ||
1307 | /* | |
1308 | * 'cupsdDenyIP()' - Add an IP address or network that is not allowed to | |
1309 | * access the location. | |
1310 | */ | |
1311 | ||
1312 | void | |
1313 | cupsdDenyIP(cupsd_location_t *loc, /* I - Location to add to */ | |
1314 | unsigned address[4],/* I - IP address to add */ | |
1315 | unsigned netmask[4])/* I - Netmask of address */ | |
1316 | { | |
1317 | cupsd_authmask_t *temp; /* New host/domain mask */ | |
1318 | ||
1319 | ||
1320 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1321 | "cupsdDenyIP(loc=%p(%s), address=%x:%x:%x:%x, netmask=%x:%x:%x:%x)", | |
e1d6a774 | 1322 | loc, loc->location ? loc->location : "nil", |
1323 | address[0], address[1], address[2], address[3], | |
1324 | netmask[0], netmask[1], netmask[2], netmask[3]); | |
ef416fc2 | 1325 | |
1326 | if ((temp = add_deny(loc)) == NULL) | |
1327 | return; | |
1328 | ||
1329 | temp->type = AUTH_IP; | |
1330 | memcpy(temp->mask.ip.address, address, sizeof(temp->mask.ip.address)); | |
1331 | memcpy(temp->mask.ip.netmask, netmask, sizeof(temp->mask.ip.netmask)); | |
1332 | } | |
1333 | ||
1334 | ||
1335 | /* | |
1336 | * 'cupsdFindBest()' - Find the location entry that best matches the resource. | |
1337 | */ | |
1338 | ||
1339 | cupsd_location_t * /* O - Location that matches */ | |
1340 | cupsdFindBest(const char *path, /* I - Resource path */ | |
1341 | http_state_t state) /* I - HTTP state/request */ | |
1342 | { | |
ef416fc2 | 1343 | char uri[HTTP_MAX_URI], |
1344 | /* URI in request... */ | |
1345 | *uriptr; /* Pointer into URI */ | |
1346 | cupsd_location_t *loc, /* Current location */ | |
1347 | *best; /* Best match for location so far */ | |
1348 | int bestlen; /* Length of best match */ | |
1349 | int limit; /* Limit field */ | |
1350 | static const int limits[] = /* Map http_status_t to AUTH_LIMIT_xyz */ | |
1351 | { | |
1352 | AUTH_LIMIT_ALL, | |
1353 | AUTH_LIMIT_OPTIONS, | |
1354 | AUTH_LIMIT_GET, | |
1355 | AUTH_LIMIT_GET, | |
1356 | AUTH_LIMIT_HEAD, | |
1357 | AUTH_LIMIT_POST, | |
1358 | AUTH_LIMIT_POST, | |
1359 | AUTH_LIMIT_POST, | |
1360 | AUTH_LIMIT_PUT, | |
1361 | AUTH_LIMIT_PUT, | |
1362 | AUTH_LIMIT_DELETE, | |
1363 | AUTH_LIMIT_TRACE, | |
1364 | AUTH_LIMIT_ALL, | |
1365 | AUTH_LIMIT_ALL | |
1366 | }; | |
1367 | ||
1368 | ||
1369 | /* | |
1370 | * First copy the connection URI to a local string so we have drop | |
1371 | * any .ppd extension from the pathname in /printers or /classes | |
1372 | * URIs... | |
1373 | */ | |
1374 | ||
1375 | strlcpy(uri, path, sizeof(uri)); | |
1376 | ||
1377 | if (!strncmp(uri, "/printers/", 10) || | |
1378 | !strncmp(uri, "/classes/", 9)) | |
1379 | { | |
1380 | /* | |
1381 | * Check if the URI has .ppd on the end... | |
1382 | */ | |
1383 | ||
1384 | uriptr = uri + strlen(uri) - 4; /* len > 4 if we get here... */ | |
1385 | ||
1386 | if (!strcmp(uriptr, ".ppd")) | |
1387 | *uriptr = '\0'; | |
1388 | } | |
1389 | ||
1390 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: uri = \"%s\"...", uri); | |
1391 | ||
1392 | /* | |
1393 | * Loop through the list of locations to find a match... | |
1394 | */ | |
1395 | ||
1396 | limit = limits[state]; | |
1397 | best = NULL; | |
1398 | bestlen = 0; | |
1399 | ||
bd7854cb | 1400 | for (loc = (cupsd_location_t *)cupsArrayFirst(Locations); |
1401 | loc; | |
1402 | loc = (cupsd_location_t *)cupsArrayNext(Locations)) | |
ef416fc2 | 1403 | { |
1404 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: Location %s Limit %x", | |
e1d6a774 | 1405 | loc->location ? loc->location : "nil", loc->limit); |
ef416fc2 | 1406 | |
1407 | if (!strncmp(uri, "/printers/", 10) || !strncmp(uri, "/classes/", 9)) | |
1408 | { | |
1409 | /* | |
1410 | * Use case-insensitive comparison for queue names... | |
1411 | */ | |
1412 | ||
e1d6a774 | 1413 | if (loc->length > bestlen && loc->location && |
bd7854cb | 1414 | !strncasecmp(uri, loc->location, loc->length) && |
ef416fc2 | 1415 | loc->location[0] == '/' && |
1416 | (limit & loc->limit) != 0) | |
1417 | { | |
1418 | best = loc; | |
1419 | bestlen = loc->length; | |
1420 | } | |
1421 | } | |
1422 | else | |
1423 | { | |
1424 | /* | |
1425 | * Use case-sensitive comparison for other URIs... | |
1426 | */ | |
1427 | ||
e1d6a774 | 1428 | if (loc->length > bestlen && loc->location && |
ef416fc2 | 1429 | !strncmp(uri, loc->location, loc->length) && |
1430 | loc->location[0] == '/' && | |
1431 | (limit & loc->limit) != 0) | |
1432 | { | |
1433 | best = loc; | |
1434 | bestlen = loc->length; | |
1435 | } | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | /* | |
1440 | * Return the match, if any... | |
1441 | */ | |
1442 | ||
1443 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindBest: best = %s", | |
1444 | best ? best->location : "NONE"); | |
1445 | ||
1446 | return (best); | |
1447 | } | |
1448 | ||
1449 | ||
1450 | /* | |
1451 | * 'cupsdFindLocation()' - Find the named location. | |
1452 | */ | |
1453 | ||
1454 | cupsd_location_t * /* O - Location that matches */ | |
1455 | cupsdFindLocation(const char *location) /* I - Connection */ | |
1456 | { | |
bd7854cb | 1457 | cupsd_location_t key; /* Search key */ |
ef416fc2 | 1458 | |
1459 | ||
bd7854cb | 1460 | key.location = (char *)location; |
ef416fc2 | 1461 | |
bd7854cb | 1462 | return ((cupsd_location_t *)cupsArrayFind(Locations, &key)); |
ef416fc2 | 1463 | } |
1464 | ||
1465 | ||
ef416fc2 | 1466 | /* |
1467 | * 'cupsdIsAuthorized()' - Check to see if the user is authorized... | |
1468 | */ | |
1469 | ||
1470 | http_status_t /* O - HTTP_OK if authorized or error code */ | |
1471 | cupsdIsAuthorized(cupsd_client_t *con, /* I - Connection */ | |
1472 | const char *owner)/* I - Owner of object */ | |
1473 | { | |
1474 | int i, j, /* Looping vars */ | |
1475 | auth; /* Authorization status */ | |
1476 | unsigned address[4]; /* Authorization address */ | |
1477 | cupsd_location_t *best; /* Best match for location so far */ | |
1478 | int hostlen; /* Length of hostname */ | |
fa73b229 | 1479 | const char *username; /* Username to authorize */ |
ef416fc2 | 1480 | struct passwd *pw; /* User password data */ |
1481 | static const char * const levels[] = /* Auth levels */ | |
1482 | { | |
1483 | "ANON", | |
1484 | "USER", | |
1485 | "GROUP" | |
1486 | }; | |
1487 | static const char * const types[] = /* Auth types */ | |
1488 | { | |
1489 | "NONE", | |
1490 | "BASIC", | |
1491 | "DIGEST", | |
1492 | "BASICDIGEST" | |
1493 | }; | |
1494 | ||
1495 | ||
1496 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1497 | "cupsdIsAuthorized: con->uri=\"%s\", con->best=%p(%s)", | |
1498 | con->uri, con->best, con->best ? con->best->location : ""); | |
fa73b229 | 1499 | if (owner) |
1500 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1501 | "cupsdIsAuthorized: owner=\"%s\"", owner); | |
ef416fc2 | 1502 | |
1503 | /* | |
1504 | * If there is no "best" authentication rule for this request, then | |
1505 | * access is allowed from the local system and denied from other | |
1506 | * addresses... | |
1507 | */ | |
1508 | ||
1509 | if (!con->best) | |
1510 | { | |
1511 | if (!strcmp(con->http.hostname, "localhost") || | |
1512 | !strcmp(con->http.hostname, ServerName)) | |
1513 | return (HTTP_OK); | |
1514 | else | |
1515 | return (HTTP_FORBIDDEN); | |
1516 | } | |
1517 | ||
1518 | best = con->best; | |
1519 | ||
1520 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
bd7854cb | 1521 | "cupsdIsAuthorized: level=AUTH_%s, type=AUTH_%s, " |
1522 | "satisfy=AUTH_SATISFY_%s, num_names=%d", | |
ef416fc2 | 1523 | levels[best->level], types[best->type], |
1524 | best->satisfy ? "ANY" : "ALL", best->num_names); | |
1525 | ||
1526 | if (best->limit == AUTH_LIMIT_IPP) | |
1527 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: op=%x(%s)", | |
1528 | best->op, ippOpString(best->op)); | |
1529 | ||
1530 | /* | |
1531 | * Check host/ip-based accesses... | |
1532 | */ | |
1533 | ||
1534 | #ifdef AF_INET6 | |
1535 | if (con->http.hostaddr->addr.sa_family == AF_INET6) | |
1536 | { | |
1537 | /* | |
1538 | * Copy IPv6 address... | |
1539 | */ | |
1540 | ||
1541 | address[0] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0]); | |
1542 | address[1] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1]); | |
1543 | address[2] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]); | |
1544 | address[3] = ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[3]); | |
1545 | } | |
1546 | else | |
1547 | #endif /* AF_INET6 */ | |
1548 | if (con->http.hostaddr->addr.sa_family == AF_INET) | |
1549 | { | |
1550 | /* | |
1551 | * Copy IPv4 address... | |
1552 | */ | |
1553 | ||
1554 | address[0] = 0; | |
1555 | address[1] = 0; | |
1556 | address[2] = 0; | |
1557 | address[3] = ntohl(con->http.hostaddr->ipv4.sin_addr.s_addr); | |
1558 | } | |
1559 | else | |
1560 | memset(address, 0, sizeof(address)); | |
1561 | ||
1562 | hostlen = strlen(con->http.hostname); | |
1563 | ||
1564 | if (!strcasecmp(con->http.hostname, "localhost")) | |
1565 | { | |
1566 | /* | |
4744bd90 | 1567 | * Access from localhost (127.0.0.1 or ::1) is always allowed... |
ef416fc2 | 1568 | */ |
1569 | ||
1570 | auth = AUTH_ALLOW; | |
1571 | } | |
1572 | else | |
1573 | { | |
1574 | /* | |
1575 | * Do authorization checks on the domain/address... | |
1576 | */ | |
1577 | ||
1578 | switch (best->order_type) | |
1579 | { | |
1580 | default : | |
1581 | auth = AUTH_DENY; /* anti-compiler-warning-code */ | |
1582 | break; | |
1583 | ||
1584 | case AUTH_ALLOW : /* Order Deny,Allow */ | |
1585 | auth = AUTH_ALLOW; | |
1586 | ||
1587 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1588 | best->num_deny, best->deny)) | |
1589 | auth = AUTH_DENY; | |
1590 | ||
1591 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1592 | best->num_allow, best->allow)) | |
1593 | auth = AUTH_ALLOW; | |
1594 | break; | |
1595 | ||
1596 | case AUTH_DENY : /* Order Allow,Deny */ | |
1597 | auth = AUTH_DENY; | |
1598 | ||
1599 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1600 | best->num_allow, best->allow)) | |
1601 | auth = AUTH_ALLOW; | |
1602 | ||
1603 | if (cupsdCheckAuth(address, con->http.hostname, hostlen, | |
1604 | best->num_deny, best->deny)) | |
1605 | auth = AUTH_DENY; | |
1606 | break; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=AUTH_%s...", | |
1611 | auth ? "DENY" : "ALLOW"); | |
1612 | ||
1613 | if (auth == AUTH_DENY && best->satisfy == AUTH_SATISFY_ALL) | |
1614 | return (HTTP_FORBIDDEN); | |
1615 | ||
1616 | #ifdef HAVE_SSL | |
1617 | /* | |
1618 | * See if encryption is required... | |
1619 | */ | |
1620 | ||
bd7854cb | 1621 | if (best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls && |
1622 | best->satisfy == AUTH_SATISFY_ALL) | |
ef416fc2 | 1623 | { |
1624 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1625 | "cupsdIsAuthorized: Need upgrade to TLS..."); | |
1626 | return (HTTP_UPGRADE_REQUIRED); | |
1627 | } | |
1628 | #endif /* HAVE_SSL */ | |
1629 | ||
1630 | /* | |
1631 | * Now see what access level is required... | |
1632 | */ | |
1633 | ||
1634 | if (best->level == AUTH_ANON || /* Anonymous access - allow it */ | |
1635 | (best->type == AUTH_NONE && best->num_names == 0)) | |
1636 | return (HTTP_OK); | |
1637 | ||
fa73b229 | 1638 | if (!con->username[0] && best->type == AUTH_NONE && |
1639 | best->limit == AUTH_LIMIT_IPP) | |
ef416fc2 | 1640 | { |
1641 | /* | |
1642 | * Check for unauthenticated username... | |
1643 | */ | |
1644 | ||
1645 | ipp_attribute_t *attr; /* requesting-user-name attribute */ | |
1646 | ||
1647 | ||
1648 | attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME); | |
1649 | if (attr) | |
1650 | { | |
1651 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1652 | "cupsdIsAuthorized: requesting-user-name=\"%s\"", | |
1653 | attr->values[0].string.text); | |
fa73b229 | 1654 | username = attr->values[0].string.text; |
ef416fc2 | 1655 | } |
fa73b229 | 1656 | else if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) |
ef416fc2 | 1657 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ |
1658 | else | |
1659 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1660 | } | |
fa73b229 | 1661 | else |
1662 | { | |
1663 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: username=\"%s\"", | |
1664 | con->username); | |
1665 | ||
1666 | if (!con->username[0]) | |
1667 | { | |
1668 | if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY) | |
1669 | return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */ | |
1670 | else | |
1671 | return (HTTP_OK); /* unless overridden with Satisfy */ | |
1672 | } | |
1673 | ||
1674 | username = con->username; | |
1675 | } | |
ef416fc2 | 1676 | |
1677 | /* | |
fa73b229 | 1678 | * OK, got a username. See if we need normal user access, or group |
ef416fc2 | 1679 | * access... (root always matches) |
1680 | */ | |
1681 | ||
fa73b229 | 1682 | if (!strcmp(username, "root")) |
ef416fc2 | 1683 | return (HTTP_OK); |
1684 | ||
1685 | /* | |
1686 | * Get the user info... | |
1687 | */ | |
1688 | ||
fa73b229 | 1689 | pw = getpwnam(username); |
ef416fc2 | 1690 | endpwent(); |
1691 | ||
1692 | if (best->level == AUTH_USER) | |
1693 | { | |
1694 | /* | |
1695 | * If there are no names associated with this location, then | |
1696 | * any valid user is OK... | |
1697 | */ | |
1698 | ||
1699 | if (best->num_names == 0) | |
1700 | return (HTTP_OK); | |
1701 | ||
1702 | /* | |
1703 | * Otherwise check the user list and return OK if this user is | |
1704 | * allowed... | |
1705 | */ | |
1706 | ||
1707 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1708 | "cupsdIsAuthorized: Checking user membership..."); | |
1709 | ||
1710 | for (i = 0; i < best->num_names; i ++) | |
1711 | { | |
1712 | if (!strcasecmp(best->names[i], "@OWNER") && owner && | |
fa73b229 | 1713 | !strcasecmp(username, owner)) |
ef416fc2 | 1714 | return (HTTP_OK); |
1715 | else if (!strcasecmp(best->names[i], "@SYSTEM")) | |
1716 | { | |
1717 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 1718 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 1719 | return (HTTP_OK); |
1720 | } | |
1721 | else if (best->names[i][0] == '@') | |
1722 | { | |
fa73b229 | 1723 | if (cupsdCheckGroup(username, pw, best->names[i] + 1)) |
ef416fc2 | 1724 | return (HTTP_OK); |
1725 | } | |
fa73b229 | 1726 | else if (!strcasecmp(username, best->names[i])) |
ef416fc2 | 1727 | return (HTTP_OK); |
1728 | } | |
1729 | ||
1730 | return (HTTP_UNAUTHORIZED); | |
1731 | } | |
1732 | ||
1733 | /* | |
1734 | * Check to see if this user is in any of the named groups... | |
1735 | */ | |
1736 | ||
1737 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1738 | "cupsdIsAuthorized: Checking group membership..."); | |
1739 | ||
1740 | /* | |
1741 | * Check to see if this user is in any of the named groups... | |
1742 | */ | |
1743 | ||
1744 | for (i = 0; i < best->num_names; i ++) | |
1745 | { | |
1746 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1747 | "cupsdIsAuthorized: Checking group \"%s\" membership...", | |
1748 | best->names[i]); | |
1749 | ||
1750 | if (!strcasecmp(best->names[i], "@SYSTEM")) | |
1751 | { | |
1752 | for (j = 0; j < NumSystemGroups; j ++) | |
fa73b229 | 1753 | if (cupsdCheckGroup(username, pw, SystemGroups[j])) |
ef416fc2 | 1754 | return (HTTP_OK); |
1755 | } | |
fa73b229 | 1756 | else if (cupsdCheckGroup(username, pw, best->names[i])) |
ef416fc2 | 1757 | return (HTTP_OK); |
1758 | } | |
1759 | ||
1760 | /* | |
1761 | * The user isn't part of the specified group, so deny access... | |
1762 | */ | |
1763 | ||
1764 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1765 | "cupsdIsAuthorized: User not in group(s)!"); | |
1766 | ||
1767 | return (HTTP_UNAUTHORIZED); | |
1768 | } | |
1769 | ||
1770 | ||
1771 | /* | |
1772 | * 'add_allow()' - Add an allow mask to the location. | |
1773 | */ | |
1774 | ||
1775 | static cupsd_authmask_t * /* O - New mask record */ | |
1776 | add_allow(cupsd_location_t *loc) /* I - Location to add to */ | |
1777 | { | |
1778 | cupsd_authmask_t *temp; /* New mask record */ | |
1779 | ||
1780 | ||
1781 | /* | |
1782 | * Range-check... | |
1783 | */ | |
1784 | ||
1785 | if (loc == NULL) | |
1786 | return (NULL); | |
1787 | ||
1788 | /* | |
1789 | * Try to allocate memory for the record... | |
1790 | */ | |
1791 | ||
1792 | if (loc->num_allow == 0) | |
1793 | temp = malloc(sizeof(cupsd_authmask_t)); | |
1794 | else | |
1795 | temp = realloc(loc->allow, sizeof(cupsd_authmask_t) * (loc->num_allow + 1)); | |
1796 | ||
1797 | if (temp == NULL) | |
1798 | return (NULL); | |
1799 | ||
1800 | loc->allow = temp; | |
1801 | temp += loc->num_allow; | |
1802 | loc->num_allow ++; | |
1803 | ||
1804 | /* | |
1805 | * Clear the mask record and return... | |
1806 | */ | |
1807 | ||
1808 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
1809 | return (temp); | |
1810 | } | |
1811 | ||
1812 | ||
1813 | /* | |
1814 | * 'add_deny()' - Add a deny mask to the location. | |
1815 | */ | |
1816 | ||
1817 | static cupsd_authmask_t * /* O - New mask record */ | |
1818 | add_deny(cupsd_location_t *loc) /* I - Location to add to */ | |
1819 | { | |
1820 | cupsd_authmask_t *temp; /* New mask record */ | |
1821 | ||
1822 | ||
1823 | /* | |
1824 | * Range-check... | |
1825 | */ | |
1826 | ||
1827 | if (loc == NULL) | |
1828 | return (NULL); | |
1829 | ||
1830 | /* | |
1831 | * Try to allocate memory for the record... | |
1832 | */ | |
1833 | ||
1834 | if (loc->num_deny == 0) | |
1835 | temp = malloc(sizeof(cupsd_authmask_t)); | |
1836 | else | |
1837 | temp = realloc(loc->deny, sizeof(cupsd_authmask_t) * (loc->num_deny + 1)); | |
1838 | ||
1839 | if (temp == NULL) | |
1840 | return (NULL); | |
1841 | ||
1842 | loc->deny = temp; | |
1843 | temp += loc->num_deny; | |
1844 | loc->num_deny ++; | |
1845 | ||
1846 | /* | |
1847 | * Clear the mask record and return... | |
1848 | */ | |
1849 | ||
1850 | memset(temp, 0, sizeof(cupsd_authmask_t)); | |
1851 | return (temp); | |
1852 | } | |
1853 | ||
1854 | ||
bd7854cb | 1855 | /* |
1856 | * 'compare_locations()' - Compare two locations. | |
1857 | */ | |
1858 | ||
1859 | static int /* O - Result of comparison */ | |
1860 | compare_locations(cupsd_location_t *a, /* I - First location */ | |
1861 | cupsd_location_t *b) /* I - Second location */ | |
1862 | { | |
1863 | return (strcmp(b->location, a->location)); | |
1864 | } | |
1865 | ||
1866 | ||
ef416fc2 | 1867 | #if !HAVE_LIBPAM |
1868 | /* | |
1869 | * 'cups_crypt()' - Encrypt the password using the DES or MD5 algorithms, | |
1870 | * as needed. | |
1871 | */ | |
1872 | ||
1873 | static char * /* O - Encrypted password */ | |
1874 | cups_crypt(const char *pw, /* I - Password string */ | |
1875 | const char *salt) /* I - Salt (key) string */ | |
1876 | { | |
bd7854cb | 1877 | if (!strncmp(salt, "$1$", 3)) |
ef416fc2 | 1878 | { |
1879 | /* | |
1880 | * Use MD5 passwords without the benefit of PAM; this is for | |
1881 | * Slackware Linux, and the algorithm was taken from the | |
1882 | * old shadow-19990827/lib/md5crypt.c source code... :( | |
1883 | */ | |
1884 | ||
1885 | int i; /* Looping var */ | |
1886 | unsigned long n; /* Output number */ | |
1887 | int pwlen; /* Length of password string */ | |
1888 | const char *salt_end; /* End of "salt" data for MD5 */ | |
1889 | char *ptr; /* Pointer into result string */ | |
1890 | _cups_md5_state_t state; /* Primary MD5 state info */ | |
1891 | _cups_md5_state_t state2; /* Secondary MD5 state info */ | |
1892 | unsigned char digest[16]; /* MD5 digest result */ | |
1893 | static char result[120]; /* Final password string */ | |
1894 | ||
1895 | ||
1896 | /* | |
1897 | * Get the salt data between dollar signs, e.g. $1$saltdata$md5. | |
1898 | * Get a maximum of 8 characters of salt data after $1$... | |
1899 | */ | |
1900 | ||
1901 | for (salt_end = salt + 3; *salt_end && (salt_end - salt) < 11; salt_end ++) | |
1902 | if (*salt_end == '$') | |
1903 | break; | |
1904 | ||
1905 | /* | |
1906 | * Compute the MD5 sum we need... | |
1907 | */ | |
1908 | ||
1909 | pwlen = strlen(pw); | |
1910 | ||
757d2cad | 1911 | _cupsMD5Init(&state); |
1912 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); | |
1913 | _cupsMD5Append(&state, (unsigned char *)salt, salt_end - salt); | |
ef416fc2 | 1914 | |
757d2cad | 1915 | _cupsMD5Init(&state2); |
1916 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
1917 | _cupsMD5Append(&state2, (unsigned char *)salt + 3, salt_end - salt - 3); | |
1918 | _cupsMD5Append(&state2, (unsigned char *)pw, pwlen); | |
1919 | _cupsMD5Finish(&state2, digest); | |
ef416fc2 | 1920 | |
1921 | for (i = pwlen; i > 0; i -= 16) | |
757d2cad | 1922 | _cupsMD5Append(&state, digest, i > 16 ? 16 : i); |
ef416fc2 | 1923 | |
1924 | for (i = pwlen; i > 0; i >>= 1) | |
757d2cad | 1925 | _cupsMD5Append(&state, (unsigned char *)((i & 1) ? "" : pw), 1); |
ef416fc2 | 1926 | |
757d2cad | 1927 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 1928 | |
1929 | for (i = 0; i < 1000; i ++) | |
1930 | { | |
757d2cad | 1931 | _cupsMD5Init(&state); |
ef416fc2 | 1932 | |
1933 | if (i & 1) | |
757d2cad | 1934 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 1935 | else |
757d2cad | 1936 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 1937 | |
1938 | if (i % 3) | |
757d2cad | 1939 | _cupsMD5Append(&state, (unsigned char *)salt + 3, salt_end - salt - 3); |
ef416fc2 | 1940 | |
1941 | if (i % 7) | |
757d2cad | 1942 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 1943 | |
1944 | if (i & 1) | |
757d2cad | 1945 | _cupsMD5Append(&state, digest, 16); |
ef416fc2 | 1946 | else |
757d2cad | 1947 | _cupsMD5Append(&state, (unsigned char *)pw, pwlen); |
ef416fc2 | 1948 | |
757d2cad | 1949 | _cupsMD5Finish(&state, digest); |
ef416fc2 | 1950 | } |
1951 | ||
1952 | /* | |
1953 | * Copy the final sum to the result string and return... | |
1954 | */ | |
1955 | ||
1956 | memcpy(result, salt, salt_end - salt); | |
1957 | ptr = result + (salt_end - salt); | |
1958 | *ptr++ = '$'; | |
1959 | ||
1960 | for (i = 0; i < 5; i ++, ptr += 4) | |
1961 | { | |
1962 | n = (((digest[i] << 8) | digest[i + 6]) << 8); | |
1963 | ||
1964 | if (i < 4) | |
1965 | n |= digest[i + 12]; | |
1966 | else | |
1967 | n |= digest[5]; | |
1968 | ||
1969 | to64(ptr, n, 4); | |
1970 | } | |
1971 | ||
1972 | to64(ptr, digest[11], 2); | |
1973 | ptr += 2; | |
1974 | *ptr = '\0'; | |
1975 | ||
1976 | return (result); | |
1977 | } | |
1978 | else | |
1979 | { | |
1980 | /* | |
1981 | * Use the standard crypt() function... | |
1982 | */ | |
1983 | ||
1984 | return (crypt(pw, salt)); | |
1985 | } | |
1986 | } | |
1987 | #endif /* !HAVE_LIBPAM */ | |
1988 | ||
1989 | ||
e1d6a774 | 1990 | /* |
1991 | * 'get_md5_password()' - Get an MD5 password. | |
1992 | */ | |
1993 | ||
1994 | static char * /* O - MD5 password string */ | |
1995 | get_md5_password(const char *username, /* I - Username */ | |
1996 | const char *group, /* I - Group */ | |
1997 | char passwd[33]) /* O - MD5 password string */ | |
1998 | { | |
1999 | cups_file_t *fp; /* passwd.md5 file */ | |
2000 | char filename[1024], /* passwd.md5 filename */ | |
2001 | line[256], /* Line from file */ | |
2002 | tempuser[33], /* User from file */ | |
2003 | tempgroup[33]; /* Group from file */ | |
2004 | ||
2005 | ||
2006 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
2007 | "get_md5_password(username=\"%s\", group=\"%s\", passwd=%p)", | |
2008 | username, group ? group : "(null)", passwd); | |
2009 | ||
2010 | snprintf(filename, sizeof(filename), "%s/passwd.md5", ServerRoot); | |
2011 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
2012 | { | |
2013 | if (errno != ENOENT) | |
2014 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open %s - %s", filename, | |
2015 | strerror(errno)); | |
2016 | ||
2017 | return (NULL); | |
2018 | } | |
2019 | ||
2020 | while (cupsFileGets(fp, line, sizeof(line)) != NULL) | |
2021 | { | |
2022 | if (sscanf(line, "%32[^:]:%32[^:]:%32s", tempuser, tempgroup, passwd) != 3) | |
2023 | { | |
2024 | cupsdLogMessage(CUPSD_LOG_ERROR, "Bad MD5 password line: %s", line); | |
2025 | continue; | |
2026 | } | |
2027 | ||
2028 | if (!strcmp(username, tempuser) && | |
2029 | (group == NULL || !strcmp(group, tempgroup))) | |
2030 | { | |
2031 | /* | |
2032 | * Found the password entry! | |
2033 | */ | |
2034 | ||
2035 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "Found MD5 user %s, group %s...", | |
2036 | username, tempgroup); | |
2037 | ||
2038 | cupsFileClose(fp); | |
2039 | return (passwd); | |
2040 | } | |
2041 | } | |
2042 | ||
2043 | /* | |
2044 | * Didn't find a password entry - return NULL! | |
2045 | */ | |
2046 | ||
2047 | cupsFileClose(fp); | |
2048 | return (NULL); | |
2049 | } | |
2050 | ||
2051 | ||
ef416fc2 | 2052 | #if HAVE_LIBPAM |
2053 | /* | |
2054 | * 'pam_func()' - PAM conversation function. | |
2055 | */ | |
2056 | ||
2057 | static int /* O - Success or failure */ | |
2058 | pam_func( | |
2059 | int num_msg, /* I - Number of messages */ | |
2060 | const struct pam_message **msg, /* I - Messages */ | |
2061 | struct pam_response **resp, /* O - Responses */ | |
2062 | void *appdata_ptr) | |
2063 | /* I - Pointer to connection */ | |
2064 | { | |
2065 | int i; /* Looping var */ | |
2066 | struct pam_response *replies; /* Replies */ | |
2067 | cupsd_authdata_t *data; /* Pointer to auth data */ | |
2068 | ||
2069 | ||
2070 | /* | |
2071 | * Allocate memory for the responses... | |
2072 | */ | |
2073 | ||
2074 | if ((replies = malloc(sizeof(struct pam_response) * num_msg)) == NULL) | |
2075 | return (PAM_CONV_ERR); | |
2076 | ||
2077 | /* | |
2078 | * Answer all of the messages... | |
2079 | */ | |
2080 | ||
2081 | DEBUG_printf(("pam_func: appdata_ptr = %p\n", appdata_ptr)); | |
2082 | ||
2083 | #ifdef __hpux | |
2084 | /* | |
2085 | * Apparently some versions of HP-UX 11 have a broken pam_unix security | |
2086 | * module. This is a workaround... | |
2087 | */ | |
2088 | ||
2089 | data = auth_data; | |
2090 | (void)appdata_ptr; | |
2091 | #else | |
2092 | data = (cupsd_authdata_t *)appdata_ptr; | |
2093 | #endif /* __hpux */ | |
2094 | ||
2095 | for (i = 0; i < num_msg; i ++) | |
2096 | { | |
2097 | DEBUG_printf(("pam_func: Message = \"%s\"\n", msg[i]->msg)); | |
2098 | ||
2099 | switch (msg[i]->msg_style) | |
2100 | { | |
2101 | case PAM_PROMPT_ECHO_ON: | |
2102 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_ON, returning \"%s\"...\n", | |
2103 | data->username)); | |
2104 | replies[i].resp_retcode = PAM_SUCCESS; | |
2105 | replies[i].resp = strdup(data->username); | |
2106 | break; | |
2107 | ||
2108 | case PAM_PROMPT_ECHO_OFF: | |
2109 | DEBUG_printf(("pam_func: PAM_PROMPT_ECHO_OFF, returning \"%s\"...\n", | |
2110 | data->password)); | |
2111 | replies[i].resp_retcode = PAM_SUCCESS; | |
2112 | replies[i].resp = strdup(data->password); | |
2113 | break; | |
2114 | ||
2115 | case PAM_TEXT_INFO: | |
2116 | DEBUG_puts("pam_func: PAM_TEXT_INFO..."); | |
2117 | replies[i].resp_retcode = PAM_SUCCESS; | |
2118 | replies[i].resp = NULL; | |
2119 | break; | |
2120 | ||
2121 | case PAM_ERROR_MSG: | |
2122 | DEBUG_puts("pam_func: PAM_ERROR_MSG..."); | |
2123 | replies[i].resp_retcode = PAM_SUCCESS; | |
2124 | replies[i].resp = NULL; | |
2125 | break; | |
2126 | ||
2127 | default: | |
2128 | DEBUG_printf(("pam_func: Unknown PAM message %d...\n", | |
2129 | msg[i]->msg_style)); | |
2130 | free(replies); | |
2131 | return (PAM_CONV_ERR); | |
2132 | } | |
2133 | } | |
2134 | ||
2135 | /* | |
2136 | * Return the responses back to PAM... | |
2137 | */ | |
2138 | ||
2139 | *resp = replies; | |
2140 | ||
2141 | return (PAM_SUCCESS); | |
2142 | } | |
2143 | #else | |
2144 | ||
2145 | ||
2146 | /* | |
2147 | * 'to64()' - Base64-encode an integer value... | |
2148 | */ | |
2149 | ||
2150 | static void | |
2151 | to64(char *s, /* O - Output string */ | |
2152 | unsigned long v, /* I - Value to encode */ | |
2153 | int n) /* I - Number of digits */ | |
2154 | { | |
2155 | const char *itoa64 = "./0123456789" | |
2156 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
2157 | "abcdefghijklmnopqrstuvwxyz"; | |
2158 | ||
2159 | ||
2160 | for (; n > 0; n --, v >>= 6) | |
2161 | *s++ = itoa64[v & 0x3f]; | |
2162 | } | |
2163 | #endif /* HAVE_LIBPAM */ | |
2164 | ||
2165 | ||
2166 | /* | |
80ca4592 | 2167 | * End of "$Id: auth.c 5336 2006-03-24 16:37:29Z mike $". |
ef416fc2 | 2168 | */ |