?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
s3/libsmb: Fix typo in error message.
[Samba.git] / source / libads / kerberos_keytab.c
blobab6d1d30ad5898c63514cca0fa63ab75ce4c9477
1 /*
2 Unix SMB/CIFS implementation.
3 kerberos keytab utility library
4 Copyright (C) Andrew Tridgell 2001
5 Copyright (C) Remus Koos 2001
6 Copyright (C) Luke Howard 2003
7 Copyright (C) Jim McDonough (jmcd@us.ibm.com) 2003
8 Copyright (C) Guenther Deschner 2003
9 Copyright (C) Rakesh Patel 2004
10 Copyright (C) Dan Perry 2004
11 Copyright (C) Jeremy Allison 2004
12 Copyright (C) Gerald Carter 2006
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 */
27
28 #include "includes.h"
29
30 #ifdef HAVE_KRB5
31
32 /**********************************************************************
33 **********************************************************************/
34
35 static int smb_krb5_kt_add_entry( krb5_context context, krb5_keytab keytab,
36 krb5_kvno kvno, const char *princ_s,
37 krb5_enctype *enctypes, krb5_data password )
38 {
39 krb5_error_code ret = 0;
40 krb5_kt_cursor cursor;
41 krb5_keytab_entry kt_entry;
42 krb5_principal princ = NULL;
43 int i;
44 char *ktprinc = NULL;
45
46 ZERO_STRUCT(kt_entry);
47 ZERO_STRUCT(cursor);
48
49 ret = smb_krb5_parse_name(context, princ_s, &princ);
50 if (ret) {
51 DEBUG(1,("smb_krb5_kt_add_entry: smb_krb5_parse_name(%s) failed (%s)\n", princ_s, error_message(ret)));
52 goto out;
53 }
54
55 /* Seek and delete old keytab entries */
56 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
57 if (ret != KRB5_KT_END && ret != ENOENT ) {
58 DEBUG(3,("smb_krb5_kt_add_entry: Will try to delete old keytab entries\n"));
59 while(!krb5_kt_next_entry(context, keytab, &kt_entry, &cursor)) {
60 bool compare_name_ok = False;
61
62 ret = smb_krb5_unparse_name(context, kt_entry.principal, &ktprinc);
63 if (ret) {
64 DEBUG(1,("smb_krb5_kt_add_entry: smb_krb5_unparse_name failed (%s)\n",
65 error_message(ret)));
66 goto out;
67 }
68
69 /*---------------------------------------------------------------------------
70 * Save the entries with kvno - 1. This is what microsoft does
71 * to allow people with existing sessions that have kvno - 1 to still
72 * work. Otherwise, when the password for the machine changes, all
73 * kerberizied sessions will 'break' until either the client reboots or
74 * the client's session key expires and they get a new session ticket
75 * with the new kvno.
76 */
77
78 #ifdef HAVE_KRB5_KT_COMPARE
79 compare_name_ok = (krb5_kt_compare(context, &kt_entry, princ, 0, 0) == True);
80 #else
81 compare_name_ok = (strcmp(ktprinc, princ_s) == 0);
82 #endif
83
84 if (!compare_name_ok) {
85 DEBUG(10,("smb_krb5_kt_add_entry: ignoring keytab entry principal %s, kvno = %d\n",
86 ktprinc, kt_entry.vno));
87 }
88
89 SAFE_FREE(ktprinc);
90
91 if (compare_name_ok) {
92 if (kt_entry.vno == kvno - 1) {
93 DEBUG(5,("smb_krb5_kt_add_entry: Saving previous (kvno %d) entry for principal: %s.\n",
94 kvno - 1, princ_s));
95 } else {
96
97 DEBUG(5,("smb_krb5_kt_add_entry: Found old entry for principal: %s (kvno %d) - trying to remove it.\n",
98 princ_s, kt_entry.vno));
99 ret = krb5_kt_end_seq_get(context, keytab, &cursor);
100 ZERO_STRUCT(cursor);
101 if (ret) {
102 DEBUG(1,("smb_krb5_kt_add_entry: krb5_kt_end_seq_get() failed (%s)\n",
103 error_message(ret)));
104 goto out;
105 }
106 ret = krb5_kt_remove_entry(context, keytab, &kt_entry);
107 if (ret) {
108 DEBUG(1,("smb_krb5_kt_add_entry: krb5_kt_remove_entry failed (%s)\n",
109 error_message(ret)));
110 goto out;
111 }
112
113 DEBUG(5,("smb_krb5_kt_add_entry: removed old entry for principal: %s (kvno %d).\n",
114 princ_s, kt_entry.vno));
115
116 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
117 if (ret) {
118 DEBUG(1,("smb_krb5_kt_add_entry: krb5_kt_start_seq failed (%s)\n",
119 error_message(ret)));
120 goto out;
121 }
122 ret = smb_krb5_kt_free_entry(context, &kt_entry);
123 ZERO_STRUCT(kt_entry);
124 if (ret) {
125 DEBUG(1,("smb_krb5_kt_add_entry: krb5_kt_remove_entry failed (%s)\n",
126 error_message(ret)));
127 goto out;
128 }
129 continue;
130 }
131 }
132
133 /* Not a match, just free this entry and continue. */
134 ret = smb_krb5_kt_free_entry(context, &kt_entry);
135 ZERO_STRUCT(kt_entry);
136 if (ret) {
137 DEBUG(1,("smb_krb5_kt_add_entry: smb_krb5_kt_free_entry failed (%s)\n", error_message(ret)));
138 goto out;
139 }
140 }
141
142 ret = krb5_kt_end_seq_get(context, keytab, &cursor);
143 ZERO_STRUCT(cursor);
144 if (ret) {
145 DEBUG(1,("smb_krb5_kt_add_entry: krb5_kt_end_seq_get failed (%s)\n",error_message(ret)));
146 goto out;
147 }
148 }
149
150 /* Ensure we don't double free. */
151 ZERO_STRUCT(kt_entry);
152 ZERO_STRUCT(cursor);
153
154 /* If we get here, we have deleted all the old entries with kvno's not equal to the current kvno-1. */
155
156 /* Now add keytab entries for all encryption types */
157 for (i = 0; enctypes[i]; i++) {
158 krb5_keyblock *keyp;
159
160 #if !defined(HAVE_KRB5_KEYTAB_ENTRY_KEY) && !defined(HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK)
161 #error krb5_keytab_entry has no key or keyblock member
162 #endif
163 #ifdef HAVE_KRB5_KEYTAB_ENTRY_KEY /* MIT */
164 keyp = &kt_entry.key;
165 #endif
166 #ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK /* Heimdal */
167 keyp = &kt_entry.keyblock;
168 #endif
169 if (create_kerberos_key_from_string(context, princ, &password, keyp, enctypes[i])) {
170 continue;
171 }
172
173 kt_entry.principal = princ;
174 kt_entry.vno = kvno;
175
176 DEBUG(3,("smb_krb5_kt_add_entry: adding keytab entry for (%s) with encryption type (%d) and version (%d)\n",
177 princ_s, enctypes[i], kt_entry.vno));
178 ret = krb5_kt_add_entry(context, keytab, &kt_entry);
179 krb5_free_keyblock_contents(context, keyp);
180 ZERO_STRUCT(kt_entry);
181 if (ret) {
182 DEBUG(1,("smb_krb5_kt_add_entry: adding entry to keytab failed (%s)\n", error_message(ret)));
183 goto out;
184 }
185 }
186
187
188 out:
189 {
190 krb5_keytab_entry zero_kt_entry;
191 ZERO_STRUCT(zero_kt_entry);
192 if (memcmp(&zero_kt_entry, &kt_entry, sizeof(krb5_keytab_entry))) {
193 smb_krb5_kt_free_entry(context, &kt_entry);
194 }
195 }
196 if (princ) {
197 krb5_free_principal(context, princ);
198 }
199
200 {
201 krb5_kt_cursor zero_csr;
202 ZERO_STRUCT(zero_csr);
203 if ((memcmp(&cursor, &zero_csr, sizeof(krb5_kt_cursor)) != 0) && keytab) {
204 krb5_kt_end_seq_get(context, keytab, &cursor);
205 }
206 }
207
208 return (int)ret;
209 }
210
211
212 /**********************************************************************
213 Adds a single service principal, i.e. 'host' to the system keytab
214 ***********************************************************************/
215
216 int ads_keytab_add_entry(ADS_STRUCT *ads, const char *srvPrinc)
217 {
218 krb5_error_code ret = 0;
219 krb5_context context = NULL;
220 krb5_keytab keytab = NULL;
221 krb5_data password;
222 krb5_kvno kvno;
223 krb5_enctype enctypes[4] = { ENCTYPE_DES_CBC_CRC, ENCTYPE_DES_CBC_MD5, 0, 0 };
224 char *princ_s = NULL, *short_princ_s = NULL;
225 char *password_s = NULL;
226 char *my_fqdn;
227 TALLOC_CTX *ctx = NULL;
228 char *machine_name;
229
230 #if defined(ENCTYPE_ARCFOUR_HMAC)
231 enctypes[2] = ENCTYPE_ARCFOUR_HMAC;
232 #endif
233
234 initialize_krb5_error_table();
235 ret = krb5_init_context(&context);
236 if (ret) {
237 DEBUG(1,("ads_keytab_add_entry: could not krb5_init_context: %s\n",error_message(ret)));
238 return -1;
239 }
240
241 ret = smb_krb5_open_keytab(context, NULL, True, &keytab);
242 if (ret) {
243 DEBUG(1,("ads_keytab_add_entry: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
244 goto out;
245 }
246
247 /* retrieve the password */
248 if (!secrets_init()) {
249 DEBUG(1,("ads_keytab_add_entry: secrets_init failed\n"));
250 ret = -1;
251 goto out;
252 }
253 password_s = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
254 if (!password_s) {
255 DEBUG(1,("ads_keytab_add_entry: failed to fetch machine password\n"));
256 ret = -1;
257 goto out;
258 }
259 ZERO_STRUCT(password);
260 password.data = password_s;
261 password.length = strlen(password_s);
262
263 /* we need the dNSHostName value here */
264
265 if ( (ctx = talloc_init("ads_keytab_add_entry")) == NULL ) {
266 DEBUG(0,("ads_keytab_add_entry: talloc() failed!\n"));
267 ret = -1;
268 goto out;
269 }
270
271 if ( (my_fqdn = ads_get_dnshostname( ads, ctx, global_myname())) == NULL ) {
272 DEBUG(0,("ads_keytab_add_entry: unable to determine machine account's dns name in AD!\n"));
273 ret = -1;
274 goto out;
275 }
276
277 if ( (machine_name = ads_get_samaccountname( ads, ctx, global_myname())) == NULL ) {
278 DEBUG(0,("ads_keytab_add_entry: unable to determine machine account's short name in AD!\n"));
279 ret = -1;
280 goto out;
281 }
282 /*strip the trailing '$' */
283 machine_name[strlen(machine_name)-1] = '\0';
284
285 /* Construct our principal */
286
287 if (strchr_m(srvPrinc, '@')) {
288 /* It's a fully-named principal. */
289 asprintf(&princ_s, "%s", srvPrinc);
290 } else if (srvPrinc[strlen(srvPrinc)-1] == '$') {
291 /* It's the machine account, as used by smbclient clients. */
292 asprintf(&princ_s, "%s@%s", srvPrinc, lp_realm());
293 } else {
294 /* It's a normal service principal. Add the SPN now so that we
295 * can obtain credentials for it and double-check the salt value
296 * used to generate the service's keys. */
297
298 asprintf(&princ_s, "%s/%s@%s", srvPrinc, my_fqdn, lp_realm());
299 asprintf(&short_princ_s, "%s/%s@%s", srvPrinc, machine_name, lp_realm());
300
301 /* According to http://support.microsoft.com/kb/326985/en-us,
302 certain principal names are automatically mapped to the host/...
303 principal in the AD account. So only create these in the
304 keytab, not in AD. --jerry */
305
306 if ( !strequal( srvPrinc, "cifs" ) && !strequal(srvPrinc, "host" ) ) {
307 DEBUG(3,("ads_keytab_add_entry: Attempting to add/update '%s'\n", princ_s));
308
309 if (!ADS_ERR_OK(ads_add_service_principal_name(ads, global_myname(), my_fqdn, srvPrinc))) {
310 DEBUG(1,("ads_keytab_add_entry: ads_add_service_principal_name failed.\n"));
311 goto out;
312 }
313 }
314 }
315
316 kvno = (krb5_kvno) ads_get_kvno(ads, global_myname());
317 if (kvno == -1) { /* -1 indicates failure, everything else is OK */
318 DEBUG(1,("ads_keytab_add_entry: ads_get_kvno failed to determine the system's kvno.\n"));
319 ret = -1;
320 goto out;
321 }
322
323 /* add the fqdn principal to the keytab */
324
325 ret = smb_krb5_kt_add_entry( context, keytab, kvno, princ_s, enctypes, password );
326 if ( ret ) {
327 DEBUG(1,("ads_keytab_add_entry: Failed to add entry to keytab file\n"));
328 goto out;
329 }
330
331 /* add the short principal name if we have one */
332
333 if ( short_princ_s ) {
334 ret = smb_krb5_kt_add_entry( context, keytab, kvno, short_princ_s, enctypes, password );
335 if ( ret ) {
336 DEBUG(1,("ads_keytab_add_entry: Failed to add short entry to keytab file\n"));
337 goto out;
338 }
339 }
340
341 out:
342 SAFE_FREE( princ_s );
343 SAFE_FREE( short_princ_s );
344 TALLOC_FREE( ctx );
345
346 if (keytab) {
347 krb5_kt_close(context, keytab);
348 }
349 if (context) {
350 krb5_free_context(context);
351 }
352 return (int)ret;
353 }
354
355 /**********************************************************************
356 Flushes all entries from the system keytab.
357 ***********************************************************************/
358
359 int ads_keytab_flush(ADS_STRUCT *ads)
360 {
361 krb5_error_code ret = 0;
362 krb5_context context = NULL;
363 krb5_keytab keytab = NULL;
364 krb5_kt_cursor cursor;
365 krb5_keytab_entry kt_entry;
366 krb5_kvno kvno;
367
368 ZERO_STRUCT(kt_entry);
369 ZERO_STRUCT(cursor);
370
371 initialize_krb5_error_table();
372 ret = krb5_init_context(&context);
373 if (ret) {
374 DEBUG(1,("ads_keytab_flush: could not krb5_init_context: %s\n",error_message(ret)));
375 return ret;
376 }
377
378 ret = smb_krb5_open_keytab(context, NULL, True, &keytab);
379 if (ret) {
380 DEBUG(1,("ads_keytab_flush: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
381 goto out;
382 }
383
384 kvno = (krb5_kvno) ads_get_kvno(ads, global_myname());
385 if (kvno == -1) { /* -1 indicates a failure */
386 DEBUG(1,("ads_keytab_flush: Error determining the system's kvno.\n"));
387 goto out;
388 }
389
390 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
391 if (ret != KRB5_KT_END && ret != ENOENT) {
392 while (!krb5_kt_next_entry(context, keytab, &kt_entry, &cursor)) {
393 ret = krb5_kt_end_seq_get(context, keytab, &cursor);
394 ZERO_STRUCT(cursor);
395 if (ret) {
396 DEBUG(1,("ads_keytab_flush: krb5_kt_end_seq_get() failed (%s)\n",error_message(ret)));
397 goto out;
398 }
399 ret = krb5_kt_remove_entry(context, keytab, &kt_entry);
400 if (ret) {
401 DEBUG(1,("ads_keytab_flush: krb5_kt_remove_entry failed (%s)\n",error_message(ret)));
402 goto out;
403 }
404 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
405 if (ret) {
406 DEBUG(1,("ads_keytab_flush: krb5_kt_start_seq failed (%s)\n",error_message(ret)));
407 goto out;
408 }
409 ret = smb_krb5_kt_free_entry(context, &kt_entry);
410 ZERO_STRUCT(kt_entry);
411 if (ret) {
412 DEBUG(1,("ads_keytab_flush: krb5_kt_remove_entry failed (%s)\n",error_message(ret)));
413 goto out;
414 }
415 }
416 }
417
418 /* Ensure we don't double free. */
419 ZERO_STRUCT(kt_entry);
420 ZERO_STRUCT(cursor);
421
422 if (!ADS_ERR_OK(ads_clear_service_principal_names(ads, global_myname()))) {
423 DEBUG(1,("ads_keytab_flush: Error while clearing service principal listings in LDAP.\n"));
424 goto out;
425 }
426
427 out:
428
429 {
430 krb5_keytab_entry zero_kt_entry;
431 ZERO_STRUCT(zero_kt_entry);
432 if (memcmp(&zero_kt_entry, &kt_entry, sizeof(krb5_keytab_entry))) {
433 smb_krb5_kt_free_entry(context, &kt_entry);
434 }
435 }
436 {
437 krb5_kt_cursor zero_csr;
438 ZERO_STRUCT(zero_csr);
439 if ((memcmp(&cursor, &zero_csr, sizeof(krb5_kt_cursor)) != 0) && keytab) {
440 krb5_kt_end_seq_get(context, keytab, &cursor);
441 }
442 }
443 if (keytab) {
444 krb5_kt_close(context, keytab);
445 }
446 if (context) {
447 krb5_free_context(context);
448 }
449 return ret;
450 }
451
452 /**********************************************************************
453 Adds all the required service principals to the system keytab.
454 ***********************************************************************/
455
456 int ads_keytab_create_default(ADS_STRUCT *ads)
457 {
458 krb5_error_code ret = 0;
459 krb5_context context = NULL;
460 krb5_keytab keytab = NULL;
461 krb5_kt_cursor cursor;
462 krb5_keytab_entry kt_entry;
463 krb5_kvno kvno;
464 int i, found = 0;
465 char *sam_account_name, *upn;
466 char **oldEntries = NULL, *princ_s[26];
467 TALLOC_CTX *ctx = NULL;
468 fstring machine_name;
469
470 memset(princ_s, '\0', sizeof(princ_s));
471
472 fstrcpy( machine_name, global_myname() );
473
474 /* these are the main ones we need */
475
476 if ( (ret = ads_keytab_add_entry(ads, "host") ) != 0 ) {
477 DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding 'host'.\n"));
478 return ret;
479 }
480
481
482 #if 0 /* don't create the CIFS/... keytab entries since no one except smbd
483 really needs them and we will fall back to verifying against secrets.tdb */
484
485 if ( (ret = ads_keytab_add_entry(ads, "cifs")) != 0 ) {
486 DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding 'cifs'.\n"));
487 return ret;
488 }
489 #endif
490
491 if ( (ctx = talloc_init("ads_keytab_create_default")) == NULL ) {
492 DEBUG(0,("ads_keytab_create_default: talloc() failed!\n"));
493 return -1;
494 }
495
496 /* now add the userPrincipalName and sAMAccountName entries */
497
498 if ( (sam_account_name = ads_get_samaccountname( ads, ctx, machine_name)) == NULL ) {
499 DEBUG(0,("ads_keytab_add_entry: unable to determine machine account's name in AD!\n"));
500 TALLOC_FREE( ctx );
501 return -1;
502 }
503
504 /* upper case the sAMAccountName to make it easier for apps to
505 know what case to use in the keytab file */
506
507 strupper_m( sam_account_name );
508
509 if ( (ret = ads_keytab_add_entry(ads, sam_account_name )) != 0 ) {
510 DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding sAMAccountName (%s)\n",
511 sam_account_name));
512 return ret;
513 }
514
515 /* remember that not every machine account will have a upn */
516
517 upn = ads_get_upn( ads, ctx, machine_name);
518 if ( upn ) {
519 if ( (ret = ads_keytab_add_entry(ads, upn)) != 0 ) {
520 DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding UPN (%s)\n",
521 upn));
522 TALLOC_FREE( ctx );
523 return ret;
524 }
525 }
526
527 TALLOC_FREE( ctx );
528
529 /* Now loop through the keytab and update any other existing entries... */
530
531 kvno = (krb5_kvno) ads_get_kvno(ads, machine_name);
532 if (kvno == -1) {
533 DEBUG(1,("ads_keytab_create_default: ads_get_kvno failed to determine the system's kvno.\n"));
534 return -1;
535 }
536
537 DEBUG(3,("ads_keytab_create_default: Searching for keytab entries to "
538 "preserve and update.\n"));
539
540 ZERO_STRUCT(kt_entry);
541 ZERO_STRUCT(cursor);
542
543 initialize_krb5_error_table();
544 ret = krb5_init_context(&context);
545 if (ret) {
546 DEBUG(1,("ads_keytab_create_default: could not krb5_init_context: %s\n",error_message(ret)));
547 return ret;
548 }
549
550 ret = smb_krb5_open_keytab(context, NULL, True, &keytab);
551 if (ret) {
552 DEBUG(1,("ads_keytab_create_default: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
553 goto done;
554 }
555
556 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
557 if (ret != KRB5_KT_END && ret != ENOENT ) {
558 while ((ret = krb5_kt_next_entry(context, keytab, &kt_entry, &cursor)) == 0) {
559 smb_krb5_kt_free_entry(context, &kt_entry);
560 ZERO_STRUCT(kt_entry);
561 found++;
562 }
563 }
564 krb5_kt_end_seq_get(context, keytab, &cursor);
565 ZERO_STRUCT(cursor);
566
567 /*
568 * Hmmm. There is no "rewind" function for the keytab. This means we have a race condition
569 * where someone else could add entries after we've counted them. Re-open asap to minimise
570 * the race. JRA.
571 */
572
573 DEBUG(3, ("ads_keytab_create_default: Found %d entries in the keytab.\n", found));
574 if (!found) {
575 goto done;
576 }
577 oldEntries = SMB_MALLOC_ARRAY(char *, found );
578 if (!oldEntries) {
579 DEBUG(1,("ads_keytab_create_default: Failed to allocate space to store the old keytab entries (malloc failed?).\n"));
580 ret = -1;
581 goto done;
582 }
583 memset(oldEntries, '\0', found * sizeof(char *));
584
585 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
586 if (ret != KRB5_KT_END && ret != ENOENT ) {
587 while (krb5_kt_next_entry(context, keytab, &kt_entry, &cursor) == 0) {
588 if (kt_entry.vno != kvno) {
589 char *ktprinc = NULL;
590 char *p;
591
592 /* This returns a malloc'ed string in ktprinc. */
593 ret = smb_krb5_unparse_name(context, kt_entry.principal, &ktprinc);
594 if (ret) {
595 DEBUG(1,("smb_krb5_unparse_name failed (%s)\n", error_message(ret)));
596 goto done;
597 }
598 /*
599 * From looking at the krb5 source they don't seem to take locale
600 * or mb strings into account. Maybe this is because they assume utf8 ?
601 * In this case we may need to convert from utf8 to mb charset here ? JRA.
602 */
603 p = strchr_m(ktprinc, '@');
604 if (p) {
605 *p = '\0';
606 }
607
608 p = strchr_m(ktprinc, '/');
609 if (p) {
610 *p = '\0';
611 }
612 for (i = 0; i < found; i++) {
613 if (!oldEntries[i]) {
614 oldEntries[i] = ktprinc;
615 break;
616 }
617 if (!strcmp(oldEntries[i], ktprinc)) {
618 SAFE_FREE(ktprinc);
619 break;
620 }
621 }
622 if (i == found) {
623 SAFE_FREE(ktprinc);
624 }
625 }
626 smb_krb5_kt_free_entry(context, &kt_entry);
627 ZERO_STRUCT(kt_entry);
628 }
629 ret = 0;
630 for (i = 0; oldEntries[i]; i++) {
631 ret |= ads_keytab_add_entry(ads, oldEntries[i]);
632 SAFE_FREE(oldEntries[i]);
633 }
634 krb5_kt_end_seq_get(context, keytab, &cursor);
635 }
636 ZERO_STRUCT(cursor);
637
638 done:
639
640 SAFE_FREE(oldEntries);
641
642 {
643 krb5_keytab_entry zero_kt_entry;
644 ZERO_STRUCT(zero_kt_entry);
645 if (memcmp(&zero_kt_entry, &kt_entry, sizeof(krb5_keytab_entry))) {
646 smb_krb5_kt_free_entry(context, &kt_entry);
647 }
648 }
649 {
650 krb5_kt_cursor zero_csr;
651 ZERO_STRUCT(zero_csr);
652 if ((memcmp(&cursor, &zero_csr, sizeof(krb5_kt_cursor)) != 0) && keytab) {
653 krb5_kt_end_seq_get(context, keytab, &cursor);
654 }
655 }
656 if (keytab) {
657 krb5_kt_close(context, keytab);
658 }
659 if (context) {
660 krb5_free_context(context);
661 }
662 return ret;
663 }
664
665 /**********************************************************************
666 List system keytab.
667 ***********************************************************************/
668
669 int ads_keytab_list(const char *keytab_name)
670 {
671 krb5_error_code ret = 0;
672 krb5_context context = NULL;
673 krb5_keytab keytab = NULL;
674 krb5_kt_cursor cursor;
675 krb5_keytab_entry kt_entry;
676
677 ZERO_STRUCT(kt_entry);
678 ZERO_STRUCT(cursor);
679
680 initialize_krb5_error_table();
681 ret = krb5_init_context(&context);
682 if (ret) {
683 DEBUG(1,("ads_keytab_list: could not krb5_init_context: %s\n",error_message(ret)));
684 return ret;
685 }
686
687 ret = smb_krb5_open_keytab(context, keytab_name, False, &keytab);
688 if (ret) {
689 DEBUG(1,("ads_keytab_list: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
690 goto out;
691 }
692
693 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
694 if (ret) {
695 goto out;
696 }
697
698 printf("Vno Type Principal\n");
699
700 while (krb5_kt_next_entry(context, keytab, &kt_entry, &cursor) == 0) {
701
702 char *princ_s = NULL;
703 char *etype_s = NULL;
704 krb5_enctype enctype = 0;
705
706 ret = smb_krb5_unparse_name(context, kt_entry.principal, &princ_s);
707 if (ret) {
708 goto out;
709 }
710
711 enctype = smb_get_enctype_from_kt_entry(&kt_entry);
712
713 ret = smb_krb5_enctype_to_string(context, enctype, &etype_s);
714 if (ret) {
715 SAFE_FREE(princ_s);
716 goto out;
717 }
718
719 printf("%3d %s\t\t %s\n", kt_entry.vno, etype_s, princ_s);
720
721 SAFE_FREE(princ_s);
722 SAFE_FREE(etype_s);
723
724 ret = smb_krb5_kt_free_entry(context, &kt_entry);
725 if (ret) {
726 goto out;
727 }
728 }
729
730 ret = krb5_kt_end_seq_get(context, keytab, &cursor);
731 if (ret) {
732 goto out;
733 }
734
735 /* Ensure we don't double free. */
736 ZERO_STRUCT(kt_entry);
737 ZERO_STRUCT(cursor);
738 out:
739
740 {
741 krb5_keytab_entry zero_kt_entry;
742 ZERO_STRUCT(zero_kt_entry);
743 if (memcmp(&zero_kt_entry, &kt_entry, sizeof(krb5_keytab_entry))) {
744 smb_krb5_kt_free_entry(context, &kt_entry);
745 }
746 }
747 {
748 krb5_kt_cursor zero_csr;
749 ZERO_STRUCT(zero_csr);
750 if ((memcmp(&cursor, &zero_csr, sizeof(krb5_kt_cursor)) != 0) && keytab) {
751 krb5_kt_end_seq_get(context, keytab, &cursor);
752 }
753 }
754
755 if (keytab) {
756 krb5_kt_close(context, keytab);
757 }
758 if (context) {
759 krb5_free_context(context);
760 }
761 return ret;
762 }
763
764 #endif /* HAVE_KRB5 */
Samba GIT mirror