Line data Source code
1 : /*
2 : * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
3 : * (Royal Institute of Technology, Stockholm, Sweden).
4 : * All rights reserved.
5 : *
6 : * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
7 : *
8 : * Redistribution and use in source and binary forms, with or without
9 : * modification, are permitted provided that the following conditions
10 : * are met:
11 : *
12 : * 1. Redistributions of source code must retain the above copyright
13 : * notice, this list of conditions and the following disclaimer.
14 : *
15 : * 2. Redistributions in binary form must reproduce the above copyright
16 : * notice, this list of conditions and the following disclaimer in the
17 : * documentation and/or other materials provided with the distribution.
18 : *
19 : * 3. Neither the name of the Institute nor the names of its contributors
20 : * may be used to endorse or promote products derived from this software
21 : * without specific prior written permission.
22 : *
23 : * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 : * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 : * SUCH DAMAGE.
34 : */
35 :
36 : #include "krb5_locl.h"
37 :
38 : typedef struct krb5_get_init_creds_ctx {
39 : KDCOptions flags;
40 : krb5_creds cred;
41 : krb5_addresses *addrs;
42 : krb5_enctype *etypes;
43 : krb5_preauthtype *pre_auth_types;
44 : char *in_tkt_service;
45 : unsigned nonce;
46 : unsigned pk_nonce;
47 :
48 : krb5_data req_buffer;
49 : AS_REQ as_req;
50 : int pa_counter;
51 :
52 : /* password and keytab_data is freed on completion */
53 : char *password;
54 : krb5_keytab_key_proc_args *keytab_data;
55 :
56 : krb5_pointer *keyseed;
57 : krb5_s2k_proc keyproc;
58 :
59 : krb5_get_init_creds_tristate req_pac;
60 :
61 : krb5_pk_init_ctx pk_init_ctx;
62 : int ic_flags;
63 :
64 : int used_pa_types;
65 : #define USED_PKINIT 1
66 : #define USED_PKINIT_W2K 2
67 : #define USED_ENC_TS_GUESS 4
68 : #define USED_ENC_TS_INFO 8
69 :
70 : METHOD_DATA md;
71 : KRB_ERROR error;
72 : AS_REP as_rep;
73 : EncKDCRepPart enc_part;
74 :
75 : krb5_prompter_fct prompter;
76 : void *prompter_data;
77 :
78 : struct pa_info_data *ppaid;
79 :
80 : } krb5_get_init_creds_ctx;
81 :
82 :
83 : struct pa_info_data {
84 : krb5_enctype etype;
85 : krb5_salt salt;
86 : krb5_data *s2kparams;
87 : };
88 :
89 : static void
90 28223 : free_paid(krb5_context context, struct pa_info_data *ppaid)
91 : {
92 28223 : krb5_free_salt(context, ppaid->salt);
93 28223 : if (ppaid->s2kparams)
94 9342 : krb5_free_data(context, ppaid->s2kparams);
95 28223 : }
96 :
97 : static krb5_error_code KRB5_CALLCONV
98 28159 : default_s2k_func(krb5_context context, krb5_enctype type,
99 : krb5_const_pointer keyseed,
100 : krb5_salt salt, krb5_data *s2kparms,
101 : krb5_keyblock **key)
102 : {
103 : krb5_error_code ret;
104 : krb5_data password;
105 : krb5_data opaque;
106 :
107 28159 : _krb5_debug(context, 5, "krb5_get_init_creds: using default_s2k_func");
108 :
109 28159 : password.data = rk_UNCONST(keyseed);
110 28159 : password.length = strlen(keyseed);
111 28159 : if (s2kparms)
112 9339 : opaque = *s2kparms;
113 : else
114 18820 : krb5_data_zero(&opaque);
115 :
116 28159 : *key = malloc(sizeof(**key));
117 28159 : if (*key == NULL)
118 0 : return ENOMEM;
119 28159 : ret = krb5_string_to_key_data_salt_opaque(context, type, password,
120 : salt, opaque, *key);
121 28159 : if (ret) {
122 0 : free(*key);
123 0 : *key = NULL;
124 : }
125 27575 : return ret;
126 : }
127 :
128 : static void
129 22093 : free_init_creds_ctx(krb5_context context, krb5_init_creds_context ctx)
130 : {
131 22093 : if (ctx->etypes)
132 139 : free(ctx->etypes);
133 22093 : if (ctx->pre_auth_types)
134 0 : free (ctx->pre_auth_types);
135 22093 : if (ctx->in_tkt_service)
136 0 : free(ctx->in_tkt_service);
137 22093 : if (ctx->keytab_data)
138 7 : free(ctx->keytab_data);
139 22093 : if (ctx->password) {
140 22366 : memset(ctx->password, 0, strlen(ctx->password));
141 22074 : free(ctx->password);
142 : }
143 22093 : krb5_data_free(&ctx->req_buffer);
144 22093 : krb5_free_cred_contents(context, &ctx->cred);
145 22093 : free_METHOD_DATA(&ctx->md);
146 22093 : free_AS_REP(&ctx->as_rep);
147 22093 : free_EncKDCRepPart(&ctx->enc_part);
148 22093 : free_KRB_ERROR(&ctx->error);
149 22093 : free_AS_REQ(&ctx->as_req);
150 22093 : if (ctx->ppaid) {
151 14238 : free_paid(context, ctx->ppaid);
152 14238 : free(ctx->ppaid);
153 : }
154 22093 : memset(ctx, 0, sizeof(*ctx));
155 22093 : }
156 :
157 : static int
158 2007 : get_config_time (krb5_context context,
159 : const char *realm,
160 : const char *name,
161 : int def)
162 : {
163 : int ret;
164 :
165 2007 : ret = krb5_config_get_time (context, NULL,
166 : "realms",
167 : realm,
168 : name,
169 : NULL);
170 2007 : if (ret >= 0)
171 0 : return ret;
172 2007 : ret = krb5_config_get_time (context, NULL,
173 : "libdefaults",
174 : name,
175 : NULL);
176 2007 : if (ret >= 0)
177 0 : return ret;
178 2007 : return def;
179 : }
180 :
181 : static krb5_error_code
182 22093 : init_cred (krb5_context context,
183 : krb5_creds *cred,
184 : krb5_principal client,
185 : krb5_deltat start_time,
186 : krb5_get_init_creds_opt *options)
187 : {
188 : krb5_error_code ret;
189 : int tmp;
190 : krb5_timestamp now;
191 :
192 22093 : krb5_timeofday (context, &now);
193 :
194 22093 : memset (cred, 0, sizeof(*cred));
195 :
196 22093 : if (client)
197 22093 : krb5_copy_principal(context, client, &cred->client);
198 : else {
199 0 : ret = krb5_get_default_principal (context,
200 : &cred->client);
201 0 : if (ret)
202 0 : goto out;
203 : }
204 :
205 22093 : if (start_time)
206 0 : cred->times.starttime = now + start_time;
207 :
208 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_TKT_LIFE)
209 9862 : tmp = options->tkt_life;
210 : else
211 12231 : tmp = 10 * 60 * 60;
212 22093 : cred->times.endtime = now + tmp;
213 :
214 29971 : if ((options->flags & KRB5_GET_INIT_CREDS_OPT_RENEW_LIFE) &&
215 7878 : options->renew_life > 0) {
216 49 : cred->times.renew_till = now + options->renew_life;
217 : }
218 :
219 21798 : return 0;
220 :
221 0 : out:
222 0 : krb5_free_cred_contents (context, cred);
223 0 : return ret;
224 : }
225 :
226 : /*
227 : * Print a message (str) to the user about the expiration in `lr'
228 : */
229 :
230 : static void
231 4 : report_expiration (krb5_context context,
232 : krb5_prompter_fct prompter,
233 : krb5_data *data,
234 : const char *str,
235 : time_t now)
236 : {
237 4 : char *p = NULL;
238 :
239 4 : if (asprintf(&p, "%s%s", str, ctime(&now)) < 0 || p == NULL)
240 0 : return;
241 4 : (*prompter)(context, data, NULL, p, 0, NULL);
242 4 : free(p);
243 : }
244 :
245 : /*
246 : * Check the context, and in the case there is a expiration warning,
247 : * use the prompter to print the warning.
248 : *
249 : * @param context A Kerberos 5 context.
250 : * @param options An GIC options structure
251 : * @param ctx The krb5_init_creds_context check for expiration.
252 : */
253 :
254 : static krb5_error_code
255 13985 : process_last_request(krb5_context context,
256 : krb5_get_init_creds_opt *options,
257 : krb5_init_creds_context ctx)
258 : {
259 : krb5_const_realm realm;
260 : LastReq *lr;
261 13985 : krb5_boolean reported = FALSE;
262 : krb5_timestamp sec;
263 : time_t t;
264 : size_t i;
265 :
266 : /*
267 : * First check if there is a API consumer.
268 : */
269 :
270 13985 : realm = krb5_principal_get_realm (context, ctx->cred.client);
271 13985 : lr = &ctx->enc_part.last_req;
272 :
273 13985 : if (options && options->opt_private && options->opt_private->lr.func) {
274 : krb5_last_req_entry **lre;
275 :
276 0 : lre = calloc(lr->len + 1, sizeof(**lre));
277 0 : if (lre == NULL) {
278 0 : krb5_set_error_message(context, ENOMEM,
279 0 : N_("malloc: out of memory", ""));
280 0 : return ENOMEM;
281 : }
282 0 : for (i = 0; i < lr->len; i++) {
283 0 : lre[i] = calloc(1, sizeof(*lre[i]));
284 0 : if (lre[i] == NULL)
285 0 : break;
286 0 : lre[i]->lr_type = lr->val[i].lr_type;
287 0 : lre[i]->value = lr->val[i].lr_value;
288 : }
289 :
290 0 : (*options->opt_private->lr.func)(context, lre,
291 0 : options->opt_private->lr.ctx);
292 :
293 0 : for (i = 0; i < lr->len; i++)
294 0 : free(lre[i]);
295 0 : free(lre);
296 : }
297 :
298 : /*
299 : * Now check if we should prompt the user
300 : */
301 :
302 13985 : if (ctx->prompter == NULL)
303 11683 : return 0;
304 :
305 2007 : krb5_timeofday (context, &sec);
306 :
307 2007 : t = sec + get_config_time (context,
308 : realm,
309 : "warn_pwexpire",
310 : 7 * 24 * 60 * 60);
311 :
312 4014 : for (i = 0; i < lr->len; ++i) {
313 2007 : if (lr->val[i].lr_value <= t) {
314 855 : switch (abs(lr->val[i].lr_type)) {
315 4 : case LR_PW_EXPTIME :
316 8 : report_expiration(context, ctx->prompter,
317 4 : ctx->prompter_data,
318 : "Your password will expire at ",
319 4 : lr->val[i].lr_value);
320 4 : reported = TRUE;
321 4 : break;
322 0 : case LR_ACCT_EXPTIME :
323 0 : report_expiration(context, ctx->prompter,
324 0 : ctx->prompter_data,
325 : "Your account will expire at ",
326 0 : lr->val[i].lr_value);
327 0 : reported = TRUE;
328 0 : break;
329 : }
330 : }
331 : }
332 :
333 2007 : if (!reported
334 2003 : && ctx->enc_part.key_expiration
335 1152 : && *ctx->enc_part.key_expiration <= t) {
336 0 : report_expiration(context, ctx->prompter,
337 0 : ctx->prompter_data,
338 : "Your password/account will expire at ",
339 0 : *ctx->enc_part.key_expiration);
340 : }
341 2007 : return 0;
342 : }
343 :
344 : static krb5_addresses no_addrs = { 0, NULL };
345 :
346 : static krb5_error_code
347 22093 : get_init_creds_common(krb5_context context,
348 : krb5_principal client,
349 : krb5_deltat start_time,
350 : krb5_get_init_creds_opt *options,
351 : krb5_init_creds_context ctx)
352 : {
353 22093 : krb5_get_init_creds_opt *default_opt = NULL;
354 : krb5_error_code ret;
355 : krb5_enctype *etypes;
356 : krb5_preauthtype *pre_auth_types;
357 :
358 22093 : memset(ctx, 0, sizeof(*ctx));
359 :
360 22093 : if (options == NULL) {
361 48 : const char *realm = krb5_principal_get_realm(context, client);
362 :
363 48 : krb5_get_init_creds_opt_alloc (context, &default_opt);
364 48 : options = default_opt;
365 48 : krb5_get_init_creds_opt_set_default_flags(context, NULL, realm, options);
366 : }
367 :
368 22093 : if (options->opt_private) {
369 22093 : if (options->opt_private->password) {
370 0 : ret = krb5_init_creds_set_password(context, ctx,
371 0 : options->opt_private->password);
372 0 : if (ret)
373 0 : goto out;
374 : }
375 :
376 22093 : ctx->keyproc = options->opt_private->key_proc;
377 22093 : ctx->req_pac = options->opt_private->req_pac;
378 22093 : ctx->pk_init_ctx = options->opt_private->pk_init_ctx;
379 22093 : ctx->ic_flags = options->opt_private->flags;
380 : } else
381 0 : ctx->req_pac = KRB5_INIT_CREDS_TRISTATE_UNSET;
382 :
383 22093 : if (ctx->keyproc == NULL)
384 22093 : ctx->keyproc = default_s2k_func;
385 :
386 : /* Enterprise name implicitly turns on canonicalize */
387 24709 : if ((ctx->ic_flags & KRB5_INIT_CREDS_CANONICALIZE) ||
388 2616 : krb5_principal_get_type(context, client) == KRB5_NT_ENTERPRISE_PRINCIPAL)
389 20678 : ctx->flags.canonicalize = 1;
390 :
391 22093 : ctx->pre_auth_types = NULL;
392 22093 : ctx->addrs = NULL;
393 22093 : ctx->etypes = NULL;
394 21798 : ctx->pre_auth_types = NULL;
395 :
396 22093 : ret = init_cred(context, &ctx->cred, client, start_time, options);
397 22093 : if (ret) {
398 0 : if (default_opt)
399 0 : krb5_get_init_creds_opt_free(context, default_opt);
400 0 : return ret;
401 : }
402 :
403 22093 : ret = krb5_init_creds_set_service(context, ctx, NULL);
404 22093 : if (ret)
405 0 : goto out;
406 :
407 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_FORWARDABLE)
408 17688 : ctx->flags.forwardable = options->forwardable;
409 :
410 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_PROXIABLE)
411 9862 : ctx->flags.proxiable = options->proxiable;
412 :
413 22093 : if (start_time)
414 0 : ctx->flags.postdated = 1;
415 22093 : if (ctx->cred.times.renew_till)
416 49 : ctx->flags.renewable = 1;
417 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_ADDRESS_LIST) {
418 3 : ctx->addrs = options->address_list;
419 22090 : } else if (options->opt_private) {
420 22090 : switch (options->opt_private->addressless) {
421 12241 : case KRB5_INIT_CREDS_TRISTATE_UNSET:
422 : #if KRB5_ADDRESSLESS_DEFAULT == TRUE
423 12241 : ctx->addrs = &no_addrs;
424 : #else
425 : ctx->addrs = NULL;
426 : #endif
427 12241 : break;
428 0 : case KRB5_INIT_CREDS_TRISTATE_FALSE:
429 0 : ctx->addrs = NULL;
430 0 : break;
431 9849 : case KRB5_INIT_CREDS_TRISTATE_TRUE:
432 9849 : ctx->addrs = &no_addrs;
433 9849 : break;
434 : }
435 : }
436 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_ETYPE_LIST) {
437 134 : if (ctx->etypes)
438 0 : free(ctx->etypes);
439 :
440 134 : etypes = malloc((options->etype_list_length + 1)
441 : * sizeof(krb5_enctype));
442 134 : if (etypes == NULL) {
443 0 : ret = ENOMEM;
444 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
445 0 : goto out;
446 : }
447 134 : memcpy (etypes, options->etype_list,
448 134 : options->etype_list_length * sizeof(krb5_enctype));
449 134 : etypes[options->etype_list_length] = ETYPE_NULL;
450 134 : ctx->etypes = etypes;
451 : }
452 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_PREAUTH_LIST) {
453 0 : pre_auth_types = malloc((options->preauth_list_length + 1)
454 : * sizeof(krb5_preauthtype));
455 0 : if (pre_auth_types == NULL) {
456 0 : ret = ENOMEM;
457 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
458 0 : goto out;
459 : }
460 0 : memcpy (pre_auth_types, options->preauth_list,
461 0 : options->preauth_list_length * sizeof(krb5_preauthtype));
462 0 : pre_auth_types[options->preauth_list_length] = KRB5_PADATA_NONE;
463 0 : ctx->pre_auth_types = pre_auth_types;
464 : }
465 22093 : if (options->flags & KRB5_GET_INIT_CREDS_OPT_ANONYMOUS)
466 0 : ctx->flags.request_anonymous = options->anonymous;
467 22093 : if (default_opt)
468 48 : krb5_get_init_creds_opt_free(context, default_opt);
469 21798 : return 0;
470 0 : out:
471 0 : if (default_opt)
472 0 : krb5_get_init_creds_opt_free(context, default_opt);
473 0 : return ret;
474 : }
475 :
476 : static krb5_error_code
477 4 : change_password (krb5_context context,
478 : krb5_principal client,
479 : const char *password,
480 : char *newpw,
481 : size_t newpw_sz,
482 : krb5_prompter_fct prompter,
483 : void *data,
484 : krb5_get_init_creds_opt *old_options)
485 : {
486 : krb5_prompt prompts[2];
487 : krb5_error_code ret;
488 : krb5_creds cpw_cred;
489 : char buf1[BUFSIZ], buf2[BUFSIZ];
490 : krb5_data password_data[2];
491 : int result_code;
492 : krb5_data result_code_string;
493 : krb5_data result_string;
494 : char *p;
495 : krb5_get_init_creds_opt *options;
496 :
497 4 : memset (&cpw_cred, 0, sizeof(cpw_cred));
498 :
499 4 : ret = krb5_get_init_creds_opt_alloc(context, &options);
500 4 : if (ret)
501 0 : return ret;
502 4 : krb5_get_init_creds_opt_set_tkt_life (options, 60);
503 4 : krb5_get_init_creds_opt_set_forwardable (options, FALSE);
504 4 : krb5_get_init_creds_opt_set_proxiable (options, FALSE);
505 4 : if (old_options && old_options->flags & KRB5_GET_INIT_CREDS_OPT_PREAUTH_LIST)
506 0 : krb5_get_init_creds_opt_set_preauth_list (options,
507 : old_options->preauth_list,
508 : old_options->preauth_list_length);
509 :
510 4 : krb5_data_zero (&result_code_string);
511 4 : krb5_data_zero (&result_string);
512 :
513 4 : ret = krb5_get_init_creds_password (context,
514 : &cpw_cred,
515 : client,
516 : password,
517 : prompter,
518 : data,
519 : 0,
520 : "kadmin/changepw",
521 : options);
522 4 : krb5_get_init_creds_opt_free(context, options);
523 4 : if (ret)
524 0 : goto out;
525 :
526 : for(;;) {
527 4 : password_data[0].data = buf1;
528 4 : password_data[0].length = sizeof(buf1);
529 :
530 4 : prompts[0].hidden = 1;
531 4 : prompts[0].prompt = "New password: ";
532 4 : prompts[0].reply = &password_data[0];
533 4 : prompts[0].type = KRB5_PROMPT_TYPE_NEW_PASSWORD;
534 :
535 4 : password_data[1].data = buf2;
536 4 : password_data[1].length = sizeof(buf2);
537 :
538 4 : prompts[1].hidden = 1;
539 4 : prompts[1].prompt = "Repeat new password: ";
540 4 : prompts[1].reply = &password_data[1];
541 4 : prompts[1].type = KRB5_PROMPT_TYPE_NEW_PASSWORD_AGAIN;
542 :
543 4 : ret = (*prompter) (context, data, NULL, "Changing password",
544 : 2, prompts);
545 4 : if (ret) {
546 0 : memset (buf1, 0, sizeof(buf1));
547 0 : memset (buf2, 0, sizeof(buf2));
548 0 : goto out;
549 : }
550 :
551 4 : if (strcmp (buf1, buf2) == 0)
552 4 : break;
553 0 : memset (buf1, 0, sizeof(buf1));
554 0 : memset (buf2, 0, sizeof(buf2));
555 : }
556 :
557 4 : ret = krb5_set_password (context,
558 : &cpw_cred,
559 : buf1,
560 : client,
561 : &result_code,
562 : &result_code_string,
563 : &result_string);
564 4 : if (ret)
565 0 : goto out;
566 12 : if (asprintf(&p, "%s: %.*s\n",
567 4 : result_code ? "Error" : "Success",
568 4 : (int)result_string.length,
569 4 : result_string.length > 0 ? (char*)result_string.data : "") < 0)
570 : {
571 0 : ret = ENOMEM;
572 0 : goto out;
573 : }
574 :
575 : /* return the result */
576 4 : (*prompter) (context, data, NULL, p, 0, NULL);
577 :
578 4 : free (p);
579 4 : if (result_code == 0) {
580 4 : strlcpy (newpw, buf1, newpw_sz);
581 4 : ret = 0;
582 : } else {
583 0 : ret = ENOTTY;
584 0 : krb5_set_error_message(context, ret,
585 0 : N_("failed changing password", ""));
586 : }
587 :
588 4 : out:
589 4 : memset (buf1, 0, sizeof(buf1));
590 4 : memset (buf2, 0, sizeof(buf2));
591 4 : krb5_data_free (&result_string);
592 4 : krb5_data_free (&result_code_string);
593 4 : krb5_free_cred_contents (context, &cpw_cred);
594 4 : return ret;
595 : }
596 :
597 :
598 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
599 0 : krb5_keyblock_key_proc (krb5_context context,
600 : krb5_keytype type,
601 : krb5_data *salt,
602 : krb5_const_pointer keyseed,
603 : krb5_keyblock **key)
604 : {
605 0 : return krb5_copy_keyblock (context, keyseed, key);
606 : }
607 :
608 : /*
609 : *
610 : */
611 :
612 : static krb5_error_code
613 22349 : init_as_req (krb5_context context,
614 : KDCOptions opts,
615 : const krb5_creds *creds,
616 : const krb5_addresses *addrs,
617 : const krb5_enctype *etypes,
618 : AS_REQ *a)
619 : {
620 : krb5_error_code ret;
621 :
622 22349 : memset(a, 0, sizeof(*a));
623 :
624 22349 : a->pvno = 5;
625 22349 : a->msg_type = krb_as_req;
626 22349 : a->req_body.kdc_options = opts;
627 22349 : a->req_body.cname = malloc(sizeof(*a->req_body.cname));
628 22349 : if (a->req_body.cname == NULL) {
629 0 : ret = ENOMEM;
630 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
631 0 : goto fail;
632 : }
633 22349 : a->req_body.sname = malloc(sizeof(*a->req_body.sname));
634 22349 : if (a->req_body.sname == NULL) {
635 0 : ret = ENOMEM;
636 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
637 0 : goto fail;
638 : }
639 :
640 22349 : ret = _krb5_principal2principalname (a->req_body.cname, creds->client);
641 22349 : if (ret)
642 0 : goto fail;
643 22349 : ret = copy_Realm(&creds->client->realm, &a->req_body.realm);
644 22349 : if (ret)
645 0 : goto fail;
646 :
647 22349 : ret = _krb5_principal2principalname (a->req_body.sname, creds->server);
648 22349 : if (ret)
649 0 : goto fail;
650 :
651 22349 : if(creds->times.starttime) {
652 0 : a->req_body.from = malloc(sizeof(*a->req_body.from));
653 0 : if (a->req_body.from == NULL) {
654 0 : ret = ENOMEM;
655 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
656 0 : goto fail;
657 : }
658 0 : *a->req_body.from = creds->times.starttime;
659 : }
660 22349 : if(creds->times.endtime){
661 22349 : ALLOC(a->req_body.till, 1);
662 22349 : *a->req_body.till = creds->times.endtime;
663 : }
664 22349 : if(creds->times.renew_till){
665 49 : a->req_body.rtime = malloc(sizeof(*a->req_body.rtime));
666 49 : if (a->req_body.rtime == NULL) {
667 0 : ret = ENOMEM;
668 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
669 0 : goto fail;
670 : }
671 49 : *a->req_body.rtime = creds->times.renew_till;
672 : }
673 22349 : a->req_body.nonce = 0;
674 22349 : ret = _krb5_init_etype(context,
675 : KRB5_PDU_AS_REQUEST,
676 : &a->req_body.etype.len,
677 22349 : &a->req_body.etype.val,
678 : etypes);
679 22349 : if (ret)
680 0 : goto fail;
681 :
682 : /*
683 : * This means no addresses
684 : */
685 :
686 22349 : if (addrs && addrs->len == 0) {
687 22346 : a->req_body.addresses = NULL;
688 : } else {
689 3 : a->req_body.addresses = malloc(sizeof(*a->req_body.addresses));
690 3 : if (a->req_body.addresses == NULL) {
691 0 : ret = ENOMEM;
692 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
693 0 : goto fail;
694 : }
695 :
696 3 : if (addrs)
697 3 : ret = krb5_copy_addresses(context, addrs, a->req_body.addresses);
698 : else {
699 0 : ret = krb5_get_all_client_addrs (context, a->req_body.addresses);
700 0 : if(ret == 0 && a->req_body.addresses->len == 0) {
701 0 : free(a->req_body.addresses);
702 0 : a->req_body.addresses = NULL;
703 : }
704 : }
705 3 : if (ret)
706 0 : goto fail;
707 : }
708 :
709 22349 : a->req_body.enc_authorization_data = NULL;
710 22349 : a->req_body.additional_tickets = NULL;
711 :
712 22349 : a->padata = NULL;
713 :
714 22349 : return 0;
715 0 : fail:
716 0 : free_AS_REQ(a);
717 0 : memset(a, 0, sizeof(*a));
718 0 : return ret;
719 : }
720 :
721 :
722 : static krb5_error_code
723 23396 : set_paid(struct pa_info_data *paid, krb5_context context,
724 : krb5_enctype etype,
725 : krb5_salttype salttype, void *salt_string, size_t salt_len,
726 : krb5_data *s2kparams)
727 : {
728 23396 : paid->etype = etype;
729 23396 : paid->salt.salttype = salttype;
730 23396 : paid->salt.saltvalue.data = malloc(salt_len + 1);
731 23396 : if (paid->salt.saltvalue.data == NULL) {
732 0 : krb5_clear_error_message(context);
733 0 : return ENOMEM;
734 : }
735 23904 : memcpy(paid->salt.saltvalue.data, salt_string, salt_len);
736 23396 : ((char *)paid->salt.saltvalue.data)[salt_len] = '\0';
737 23396 : paid->salt.saltvalue.length = salt_len;
738 23396 : if (s2kparams) {
739 : krb5_error_code ret;
740 :
741 9342 : ret = krb5_copy_data(context, s2kparams, &paid->s2kparams);
742 9342 : if (ret) {
743 0 : krb5_clear_error_message(context);
744 0 : krb5_free_salt(context, paid->salt);
745 0 : return ret;
746 : }
747 : } else
748 14054 : paid->s2kparams = NULL;
749 :
750 22888 : return 0;
751 : }
752 :
753 : static struct pa_info_data *
754 14238 : pa_etype_info2(krb5_context context,
755 : const krb5_principal client,
756 : const AS_REQ *asreq,
757 : struct pa_info_data *paid,
758 : heim_octet_string *data)
759 : {
760 : krb5_error_code ret;
761 : ETYPE_INFO2 e;
762 : size_t sz;
763 : size_t i, j;
764 :
765 14238 : memset(&e, 0, sizeof(e));
766 14238 : ret = decode_ETYPE_INFO2(data->data, data->length, &e, &sz);
767 14238 : if (ret)
768 0 : goto out;
769 14238 : if (e.len == 0)
770 0 : goto out;
771 30454 : for (j = 0; j < asreq->req_body.etype.len; j++) {
772 46637 : for (i = 0; i < e.len; i++) {
773 30749 : if (asreq->req_body.etype.val[j] == e.val[i].etype) {
774 : krb5_salt salt;
775 14238 : if (e.val[i].salt == NULL)
776 4912 : ret = krb5_get_pw_salt(context, client, &salt);
777 : else {
778 9326 : salt.saltvalue.data = *e.val[i].salt;
779 9326 : salt.saltvalue.length = strlen(*e.val[i].salt);
780 9326 : ret = 0;
781 : }
782 14025 : if (ret == 0)
783 14238 : ret = set_paid(paid, context, e.val[i].etype,
784 : KRB5_PW_SALT,
785 : salt.saltvalue.data,
786 : salt.saltvalue.length,
787 14238 : e.val[i].s2kparams);
788 14238 : if (e.val[i].salt == NULL)
789 4912 : krb5_free_salt(context, salt);
790 14238 : if (ret == 0) {
791 14238 : free_ETYPE_INFO2(&e);
792 14238 : return paid;
793 : }
794 : }
795 : }
796 : }
797 0 : out:
798 0 : free_ETYPE_INFO2(&e);
799 0 : return NULL;
800 : }
801 :
802 : static struct pa_info_data *
803 0 : pa_etype_info(krb5_context context,
804 : const krb5_principal client,
805 : const AS_REQ *asreq,
806 : struct pa_info_data *paid,
807 : heim_octet_string *data)
808 : {
809 : krb5_error_code ret;
810 : ETYPE_INFO e;
811 : size_t sz;
812 : size_t i, j;
813 :
814 0 : memset(&e, 0, sizeof(e));
815 0 : ret = decode_ETYPE_INFO(data->data, data->length, &e, &sz);
816 0 : if (ret)
817 0 : goto out;
818 0 : if (e.len == 0)
819 0 : goto out;
820 0 : for (j = 0; j < asreq->req_body.etype.len; j++) {
821 0 : for (i = 0; i < e.len; i++) {
822 0 : if (asreq->req_body.etype.val[j] == e.val[i].etype) {
823 : krb5_salt salt;
824 0 : salt.salttype = KRB5_PW_SALT;
825 0 : if (e.val[i].salt == NULL)
826 0 : ret = krb5_get_pw_salt(context, client, &salt);
827 : else {
828 0 : salt.saltvalue = *e.val[i].salt;
829 0 : ret = 0;
830 : }
831 0 : if (e.val[i].salttype)
832 0 : salt.salttype = *e.val[i].salttype;
833 0 : if (ret == 0) {
834 0 : ret = set_paid(paid, context, e.val[i].etype,
835 : salt.salttype,
836 : salt.saltvalue.data,
837 : salt.saltvalue.length,
838 : NULL);
839 0 : if (e.val[i].salt == NULL)
840 0 : krb5_free_salt(context, salt);
841 : }
842 0 : if (ret == 0) {
843 0 : free_ETYPE_INFO(&e);
844 0 : return paid;
845 : }
846 : }
847 : }
848 : }
849 0 : out:
850 0 : free_ETYPE_INFO(&e);
851 0 : return NULL;
852 : }
853 :
854 : static struct pa_info_data *
855 9158 : pa_pw_or_afs3_salt(krb5_context context,
856 : const krb5_principal client,
857 : const AS_REQ *asreq,
858 : struct pa_info_data *paid,
859 : heim_octet_string *data)
860 : {
861 : krb5_error_code ret;
862 9158 : if (paid->etype == KRB5_ENCTYPE_NULL)
863 0 : return NULL;
864 9158 : ret = set_paid(paid, context,
865 : paid->etype,
866 : paid->salt.salttype,
867 : data->data,
868 : data->length,
869 : NULL);
870 9158 : if (ret)
871 0 : return NULL;
872 9158 : return paid;
873 : }
874 :
875 :
876 : struct pa_info {
877 : krb5_preauthtype type;
878 : struct pa_info_data *(*salt_info)(krb5_context,
879 : const krb5_principal,
880 : const AS_REQ *,
881 : struct pa_info_data *,
882 : heim_octet_string *);
883 : };
884 :
885 : static struct pa_info pa_prefs[] = {
886 : { KRB5_PADATA_ETYPE_INFO2, pa_etype_info2 },
887 : { KRB5_PADATA_ETYPE_INFO, pa_etype_info },
888 : { KRB5_PADATA_PW_SALT, pa_pw_or_afs3_salt },
889 : { KRB5_PADATA_AFS3_SALT, pa_pw_or_afs3_salt }
890 : };
891 :
892 : static PA_DATA *
893 40882 : find_pa_data(const METHOD_DATA *md, unsigned type)
894 : {
895 : size_t i;
896 41816 : if (md == NULL)
897 0 : return NULL;
898 106912 : for (i = 0; i < md->len; i++)
899 89426 : if (md->val[i].padata_type == type)
900 22888 : return &md->val[i];
901 17994 : return NULL;
902 : }
903 :
904 : static struct pa_info_data *
905 23422 : process_pa_info(krb5_context context,
906 : const krb5_principal client,
907 : const AS_REQ *asreq,
908 : struct pa_info_data *paid,
909 : METHOD_DATA *md)
910 : {
911 23422 : struct pa_info_data *p = NULL;
912 : size_t i;
913 :
914 65238 : for (i = 0; p == NULL && i < sizeof(pa_prefs)/sizeof(pa_prefs[0]); i++) {
915 42750 : PA_DATA *pa = find_pa_data(md, pa_prefs[i].type);
916 41816 : if (pa == NULL)
917 18420 : continue;
918 23396 : paid->salt.salttype = (krb5_salttype)pa_prefs[i].type;
919 23396 : p = (*pa_prefs[i].salt_info)(context, client, asreq,
920 : paid, &pa->padata_value);
921 : }
922 23422 : return p;
923 : }
924 :
925 : static krb5_error_code
926 14238 : make_pa_enc_timestamp(krb5_context context, METHOD_DATA *md,
927 : krb5_enctype etype, krb5_keyblock *key)
928 : {
929 : PA_ENC_TS_ENC p;
930 : unsigned char *buf;
931 : size_t buf_size;
932 14238 : size_t len = 0;
933 : EncryptedData encdata;
934 : krb5_error_code ret;
935 : int32_t usec;
936 : int usec2;
937 : krb5_crypto crypto;
938 :
939 14238 : krb5_us_timeofday (context, &p.patimestamp, &usec);
940 14238 : usec2 = usec;
941 14238 : p.pausec = &usec2;
942 :
943 14238 : ASN1_MALLOC_ENCODE(PA_ENC_TS_ENC, buf, buf_size, &p, &len, ret);
944 14238 : if (ret)
945 0 : return ret;
946 14238 : if(buf_size != len)
947 0 : krb5_abortx(context, "internal error in ASN.1 encoder");
948 :
949 14238 : ret = krb5_crypto_init(context, key, 0, &crypto);
950 14238 : if (ret) {
951 0 : free(buf);
952 0 : return ret;
953 : }
954 14238 : ret = krb5_encrypt_EncryptedData(context,
955 : crypto,
956 : KRB5_KU_PA_ENC_TIMESTAMP,
957 : buf,
958 : len,
959 : 0,
960 : &encdata);
961 14238 : free(buf);
962 14238 : krb5_crypto_destroy(context, crypto);
963 14238 : if (ret)
964 0 : return ret;
965 :
966 14238 : ASN1_MALLOC_ENCODE(EncryptedData, buf, buf_size, &encdata, &len, ret);
967 14238 : free_EncryptedData(&encdata);
968 14238 : if (ret)
969 0 : return ret;
970 14238 : if(buf_size != len)
971 0 : krb5_abortx(context, "internal error in ASN.1 encoder");
972 :
973 14238 : ret = krb5_padata_add(context, md, KRB5_PADATA_ENC_TIMESTAMP, buf, len);
974 14238 : if (ret)
975 0 : free(buf);
976 13943 : return ret;
977 : }
978 :
979 : static krb5_error_code
980 14238 : add_enc_ts_padata(krb5_context context,
981 : METHOD_DATA *md,
982 : krb5_principal client,
983 : krb5_s2k_proc keyproc,
984 : krb5_const_pointer keyseed,
985 : krb5_enctype *enctypes,
986 : unsigned netypes,
987 : krb5_salt *salt,
988 : krb5_data *s2kparams)
989 : {
990 : krb5_error_code ret;
991 : krb5_salt salt2;
992 : krb5_enctype *ep;
993 : size_t i;
994 :
995 14238 : if(salt == NULL) {
996 : /* default to standard salt */
997 0 : ret = krb5_get_pw_salt (context, client, &salt2);
998 0 : if (ret)
999 0 : return ret;
1000 0 : salt = &salt2;
1001 : }
1002 14238 : if (!enctypes) {
1003 0 : enctypes = context->etypes;
1004 0 : netypes = 0;
1005 0 : for (ep = enctypes; *ep != ETYPE_NULL; ep++)
1006 0 : netypes++;
1007 : }
1008 :
1009 28476 : for (i = 0; i < netypes; ++i) {
1010 : krb5_keyblock *key;
1011 :
1012 14238 : _krb5_debug(context, 5, "krb5_get_init_creds: using ENC-TS with enctype %d", enctypes[i]);
1013 :
1014 14238 : ret = (*keyproc)(context, enctypes[i], keyseed,
1015 : *salt, s2kparams, &key);
1016 14238 : if (ret)
1017 0 : continue;
1018 14238 : ret = make_pa_enc_timestamp (context, md, enctypes[i], key);
1019 14238 : krb5_free_keyblock (context, key);
1020 14238 : if (ret)
1021 0 : return ret;
1022 : }
1023 14238 : if(salt == &salt2)
1024 0 : krb5_free_salt(context, salt2);
1025 13943 : return 0;
1026 : }
1027 :
1028 : static krb5_error_code
1029 14238 : pa_data_to_md_ts_enc(krb5_context context,
1030 : const AS_REQ *a,
1031 : const krb5_principal client,
1032 : krb5_get_init_creds_ctx *ctx,
1033 : struct pa_info_data *ppaid,
1034 : METHOD_DATA *md)
1035 : {
1036 14238 : if (ctx->keyproc == NULL || ctx->keyseed == NULL)
1037 0 : return 0;
1038 :
1039 14238 : if (ppaid) {
1040 28181 : add_enc_ts_padata(context, md, client,
1041 13943 : ctx->keyproc, ctx->keyseed,
1042 : &ppaid->etype, 1,
1043 : &ppaid->salt, ppaid->s2kparams);
1044 : } else {
1045 : krb5_salt salt;
1046 :
1047 0 : _krb5_debug(context, 5, "krb5_get_init_creds: pa-info not found, guessing salt");
1048 :
1049 : /* make a v5 salted pa-data */
1050 0 : add_enc_ts_padata(context, md, client,
1051 0 : ctx->keyproc, ctx->keyseed,
1052 0 : a->req_body.etype.val, a->req_body.etype.len,
1053 : NULL, NULL);
1054 :
1055 : /* make a v4 salted pa-data */
1056 0 : salt.salttype = KRB5_PW_SALT;
1057 0 : krb5_data_zero(&salt.saltvalue);
1058 0 : add_enc_ts_padata(context, md, client,
1059 0 : ctx->keyproc, ctx->keyseed,
1060 0 : a->req_body.etype.val, a->req_body.etype.len,
1061 : &salt, NULL);
1062 : }
1063 13943 : return 0;
1064 : }
1065 :
1066 : static krb5_error_code
1067 13664 : pa_data_to_key_plain(krb5_context context,
1068 : const krb5_principal client,
1069 : krb5_get_init_creds_ctx *ctx,
1070 : krb5_salt salt,
1071 : krb5_data *s2kparams,
1072 : krb5_enctype etype,
1073 : krb5_keyblock **key)
1074 : {
1075 : krb5_error_code ret;
1076 :
1077 13959 : ret = (*ctx->keyproc)(context, etype, ctx->keyseed,
1078 : salt, s2kparams, key);
1079 13664 : return ret;
1080 : }
1081 :
1082 :
1083 : static krb5_error_code
1084 40 : pa_data_to_md_pkinit(krb5_context context,
1085 : const AS_REQ *a,
1086 : const krb5_principal client,
1087 : int win2k,
1088 : krb5_get_init_creds_ctx *ctx,
1089 : METHOD_DATA *md)
1090 : {
1091 40 : if (ctx->pk_init_ctx == NULL)
1092 0 : return 0;
1093 : #ifdef PKINIT
1094 80 : return _krb5_pk_mk_padata(context,
1095 40 : ctx->pk_init_ctx,
1096 : ctx->ic_flags,
1097 : win2k,
1098 : &a->req_body,
1099 : ctx->pk_nonce,
1100 : md);
1101 : #else
1102 : krb5_set_error_message(context, EINVAL,
1103 : N_("no support for PKINIT compiled in", ""));
1104 : return EINVAL;
1105 : #endif
1106 : }
1107 :
1108 : static krb5_error_code
1109 36587 : pa_data_add_pac_request(krb5_context context,
1110 : krb5_get_init_creds_ctx *ctx,
1111 : METHOD_DATA *md)
1112 : {
1113 36587 : size_t len = 0, length;
1114 : krb5_error_code ret;
1115 : PA_PAC_REQUEST req;
1116 : void *buf;
1117 :
1118 36587 : switch (ctx->req_pac) {
1119 34985 : case KRB5_INIT_CREDS_TRISTATE_UNSET:
1120 34985 : return 0; /* don't bother */
1121 1012 : case KRB5_INIT_CREDS_TRISTATE_TRUE:
1122 1012 : req.include_pac = 1;
1123 1012 : break;
1124 0 : case KRB5_INIT_CREDS_TRISTATE_FALSE:
1125 0 : req.include_pac = 0;
1126 : }
1127 :
1128 1012 : ASN1_MALLOC_ENCODE(PA_PAC_REQUEST, buf, length,
1129 : &req, &len, ret);
1130 1012 : if (ret)
1131 0 : return ret;
1132 1012 : if(len != length)
1133 0 : krb5_abortx(context, "internal error in ASN.1 encoder");
1134 :
1135 1012 : ret = krb5_padata_add(context, md, KRB5_PADATA_PA_PAC_REQUEST, buf, len);
1136 1012 : if (ret)
1137 0 : free(buf);
1138 :
1139 1012 : return 0;
1140 : }
1141 :
1142 : /*
1143 : * Assumes caller always will free `out_md', even on error.
1144 : */
1145 :
1146 : static krb5_error_code
1147 36587 : process_pa_data_to_md(krb5_context context,
1148 : const krb5_creds *creds,
1149 : const AS_REQ *a,
1150 : krb5_get_init_creds_ctx *ctx,
1151 : METHOD_DATA *in_md,
1152 : METHOD_DATA **out_md,
1153 : krb5_prompter_fct prompter,
1154 : void *prompter_data)
1155 : {
1156 : krb5_error_code ret;
1157 :
1158 36587 : ALLOC(*out_md, 1);
1159 36587 : if (*out_md == NULL) {
1160 0 : krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
1161 0 : return ENOMEM;
1162 : }
1163 36587 : (*out_md)->len = 0;
1164 36587 : (*out_md)->val = NULL;
1165 :
1166 36587 : if (_krb5_have_debug(context, 5)) {
1167 : unsigned i;
1168 0 : _krb5_debug(context, 5, "KDC send %d patypes", in_md->len);
1169 0 : for (i = 0; i < in_md->len; i++)
1170 0 : _krb5_debug(context, 5, "KDC send PA-DATA type: %d", in_md->val[i].padata_type);
1171 : }
1172 :
1173 : /*
1174 : * Make sure we don't sent both ENC-TS and PK-INIT pa data, no
1175 : * need to expose our password protecting our PKCS12 key.
1176 : */
1177 :
1178 36587 : if (ctx->pk_init_ctx) {
1179 :
1180 40 : _krb5_debug(context, 5, "krb5_get_init_creds: "
1181 : "prepareing PKINIT padata (%s)",
1182 40 : (ctx->used_pa_types & USED_PKINIT_W2K) ? "win2k" : "ietf");
1183 :
1184 40 : if (ctx->used_pa_types & USED_PKINIT_W2K) {
1185 0 : krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
1186 : "Already tried pkinit, looping");
1187 0 : return KRB5_GET_IN_TKT_LOOP;
1188 : }
1189 :
1190 80 : ret = pa_data_to_md_pkinit(context, a, creds->client,
1191 40 : (ctx->used_pa_types & USED_PKINIT),
1192 : ctx, *out_md);
1193 40 : if (ret)
1194 0 : return ret;
1195 :
1196 40 : if (ctx->used_pa_types & USED_PKINIT)
1197 0 : ctx->used_pa_types |= USED_PKINIT_W2K;
1198 : else
1199 40 : ctx->used_pa_types |= USED_PKINIT;
1200 :
1201 36547 : } else if (in_md->len != 0) {
1202 : struct pa_info_data *paid, *ppaid;
1203 : unsigned flag;
1204 :
1205 14238 : paid = calloc(1, sizeof(*paid));
1206 :
1207 14238 : paid->etype = KRB5_ENCTYPE_NULL;
1208 14238 : ppaid = process_pa_info(context, creds->client, a, paid, in_md);
1209 :
1210 14238 : if (ppaid)
1211 13943 : flag = USED_ENC_TS_INFO;
1212 : else
1213 0 : flag = USED_ENC_TS_GUESS;
1214 :
1215 14238 : if (ctx->used_pa_types & flag) {
1216 0 : if (ppaid)
1217 0 : free_paid(context, ppaid);
1218 0 : krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
1219 : "Already tried ENC-TS-%s, looping",
1220 : flag == USED_ENC_TS_INFO ? "info" : "guess");
1221 0 : return KRB5_GET_IN_TKT_LOOP;
1222 : }
1223 :
1224 14238 : pa_data_to_md_ts_enc(context, a, creds->client, ctx, ppaid, *out_md);
1225 :
1226 14238 : ctx->used_pa_types |= flag;
1227 :
1228 14238 : if (ppaid) {
1229 14238 : if (ctx->ppaid) {
1230 0 : free_paid(context, ctx->ppaid);
1231 0 : free(ctx->ppaid);
1232 : }
1233 14238 : ctx->ppaid = ppaid;
1234 : } else
1235 0 : free(paid);
1236 : }
1237 :
1238 36587 : pa_data_add_pac_request(context, ctx, *out_md);
1239 :
1240 36587 : if ((*out_md)->len == 0) {
1241 21569 : free(*out_md);
1242 21569 : *out_md = NULL;
1243 : }
1244 :
1245 35997 : return 0;
1246 : }
1247 :
1248 : static krb5_error_code
1249 13985 : process_pa_data_to_key(krb5_context context,
1250 : krb5_get_init_creds_ctx *ctx,
1251 : krb5_creds *creds,
1252 : AS_REQ *a,
1253 : AS_REP *rep,
1254 : const krb5_krbhst_info *hi,
1255 : krb5_keyblock **key)
1256 : {
1257 13985 : struct pa_info_data paid, *ppaid = NULL;
1258 : krb5_error_code ret;
1259 : krb5_enctype etype;
1260 : PA_DATA *pa;
1261 :
1262 13985 : memset(&paid, 0, sizeof(paid));
1263 :
1264 13985 : etype = rep->enc_part.etype;
1265 :
1266 13985 : if (rep->padata) {
1267 9184 : paid.etype = etype;
1268 9184 : ppaid = process_pa_info(context, creds->client, a, &paid,
1269 : rep->padata);
1270 : }
1271 13903 : if (ppaid == NULL)
1272 4827 : ppaid = ctx->ppaid;
1273 13985 : if (ppaid == NULL) {
1274 26 : ret = krb5_get_pw_salt (context, creds->client, &paid.salt);
1275 26 : if (ret)
1276 0 : return ret;
1277 26 : paid.etype = etype;
1278 26 : paid.s2kparams = NULL;
1279 26 : ppaid = &paid;
1280 : }
1281 :
1282 13985 : pa = NULL;
1283 13985 : if (rep->padata) {
1284 9184 : int idx = 0;
1285 9184 : pa = krb5_find_padata(rep->padata->val,
1286 8971 : rep->padata->len,
1287 : KRB5_PADATA_PK_AS_REP,
1288 : &idx);
1289 9184 : if (pa == NULL) {
1290 9158 : idx = 0;
1291 9158 : pa = krb5_find_padata(rep->padata->val,
1292 9158 : rep->padata->len,
1293 : KRB5_PADATA_PK_AS_REP_19,
1294 : &idx);
1295 : }
1296 : }
1297 13903 : if (pa && ctx->pk_init_ctx) {
1298 : #ifdef PKINIT
1299 26 : _krb5_debug(context, 5, "krb5_get_init_creds: using PKINIT");
1300 :
1301 52 : ret = _krb5_pk_rd_pa_reply(context,
1302 26 : a->req_body.realm,
1303 26 : ctx->pk_init_ctx,
1304 : etype,
1305 : hi,
1306 : ctx->pk_nonce,
1307 26 : &ctx->req_buffer,
1308 : pa,
1309 : key);
1310 : #else
1311 : ret = EINVAL;
1312 : krb5_set_error_message(context, ret, N_("no support for PKINIT compiled in", ""));
1313 : #endif
1314 13959 : } else if (ctx->keyseed) {
1315 13959 : _krb5_debug(context, 5, "krb5_get_init_creds: using keyproc");
1316 14254 : ret = pa_data_to_key_plain(context, creds->client, ctx,
1317 : ppaid->salt, ppaid->s2kparams, etype, key);
1318 : } else {
1319 0 : ret = EINVAL;
1320 0 : krb5_set_error_message(context, ret, N_("No usable pa data type", ""));
1321 : }
1322 :
1323 13985 : free_paid(context, &paid);
1324 13690 : return ret;
1325 : }
1326 :
1327 : /**
1328 : * Start a new context to get a new initial credential.
1329 : *
1330 : * @param context A Kerberos 5 context.
1331 : * @param client The Kerberos principal to get the credential for, if
1332 : * NULL is given, the default principal is used as determined by
1333 : * krb5_get_default_principal().
1334 : * @param prompter
1335 : * @param prompter_data
1336 : * @param start_time the time the ticket should start to be valid or 0 for now.
1337 : * @param options a options structure, can be NULL for default options.
1338 : * @param rctx A new allocated free with krb5_init_creds_free().
1339 : *
1340 : * @return 0 for success or an Kerberos 5 error code, see krb5_get_error_message().
1341 : *
1342 : * @ingroup krb5_credential
1343 : */
1344 :
1345 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1346 22093 : krb5_init_creds_init(krb5_context context,
1347 : krb5_principal client,
1348 : krb5_prompter_fct prompter,
1349 : void *prompter_data,
1350 : krb5_deltat start_time,
1351 : krb5_get_init_creds_opt *options,
1352 : krb5_init_creds_context *rctx)
1353 : {
1354 : krb5_init_creds_context ctx;
1355 : krb5_error_code ret;
1356 :
1357 22093 : *rctx = NULL;
1358 :
1359 22093 : ctx = calloc(1, sizeof(*ctx));
1360 22093 : if (ctx == NULL) {
1361 0 : krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
1362 0 : return ENOMEM;
1363 : }
1364 :
1365 22093 : ret = get_init_creds_common(context, client, start_time, options, ctx);
1366 22093 : if (ret) {
1367 0 : free(ctx);
1368 0 : return ret;
1369 : }
1370 :
1371 : /* Set a new nonce. */
1372 22093 : krb5_generate_random_block (&ctx->nonce, sizeof(ctx->nonce));
1373 22093 : ctx->nonce &= 0x7fffffff;
1374 : /* XXX these just needs to be the same when using Windows PK-INIT */
1375 22093 : ctx->pk_nonce = ctx->nonce;
1376 :
1377 22093 : ctx->prompter = prompter;
1378 22093 : ctx->prompter_data = prompter_data;
1379 :
1380 22093 : *rctx = ctx;
1381 :
1382 22093 : return ret;
1383 : }
1384 :
1385 : /**
1386 : * Sets the service that the is requested. This call is only neede for
1387 : * special initial tickets, by default the a krbtgt is fetched in the default realm.
1388 : *
1389 : * @param context a Kerberos 5 context.
1390 : * @param ctx a krb5_init_creds_context context.
1391 : * @param service the service given as a string, for example
1392 : * "kadmind/admin". If NULL, the default krbtgt in the clients
1393 : * realm is set.
1394 : *
1395 : * @return 0 for success, or an Kerberos 5 error code, see krb5_get_error_message().
1396 : * @ingroup krb5_credential
1397 : */
1398 :
1399 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1400 44442 : krb5_init_creds_set_service(krb5_context context,
1401 : krb5_init_creds_context ctx,
1402 : const char *service)
1403 : {
1404 : krb5_const_realm client_realm;
1405 : krb5_principal principal;
1406 : krb5_error_code ret;
1407 :
1408 44442 : client_realm = krb5_principal_get_realm (context, ctx->cred.client);
1409 :
1410 44442 : if (service) {
1411 1741 : ret = krb5_parse_name (context, service, &principal);
1412 1741 : if (ret)
1413 0 : return ret;
1414 1741 : krb5_principal_set_realm (context, principal, client_realm);
1415 : } else {
1416 42701 : ret = krb5_make_principal(context, &principal,
1417 : client_realm, KRB5_TGS_NAME, client_realm,
1418 : NULL);
1419 42701 : if (ret)
1420 0 : return ret;
1421 : }
1422 :
1423 : /*
1424 : * This is for Windows RODC that are picky about what name type
1425 : * the server principal have, and the really strange part is that
1426 : * they are picky about the AS-REQ name type and not the TGS-REQ
1427 : * later. Oh well.
1428 : */
1429 :
1430 44442 : if (krb5_principal_is_krbtgt(context, principal))
1431 42701 : krb5_principal_set_type(context, principal, KRB5_NT_SRV_INST);
1432 :
1433 44442 : krb5_free_principal(context, ctx->cred.server);
1434 44442 : ctx->cred.server = principal;
1435 :
1436 44442 : return 0;
1437 : }
1438 :
1439 : /**
1440 : * Sets the password that will use for the request.
1441 : *
1442 : * @param context a Kerberos 5 context.
1443 : * @param ctx ctx krb5_init_creds_context context.
1444 : * @param password the password to use.
1445 : *
1446 : * @return 0 for success, or an Kerberos 5 error code, see krb5_get_error_message().
1447 : * @ingroup krb5_credential
1448 : */
1449 :
1450 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1451 22074 : krb5_init_creds_set_password(krb5_context context,
1452 : krb5_init_creds_context ctx,
1453 : const char *password)
1454 : {
1455 22074 : if (ctx->password) {
1456 0 : memset(ctx->password, 0, strlen(ctx->password));
1457 0 : free(ctx->password);
1458 : }
1459 22074 : if (password) {
1460 22074 : ctx->password = strdup(password);
1461 22074 : if (ctx->password == NULL) {
1462 0 : krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
1463 0 : return ENOMEM;
1464 : }
1465 22074 : ctx->keyseed = (void *) ctx->password;
1466 : } else {
1467 0 : ctx->keyseed = NULL;
1468 0 : ctx->password = NULL;
1469 : }
1470 :
1471 21782 : return 0;
1472 : }
1473 :
1474 : static krb5_error_code KRB5_CALLCONV
1475 14 : keytab_key_proc(krb5_context context, krb5_enctype enctype,
1476 : krb5_const_pointer keyseed,
1477 : krb5_salt salt, krb5_data *s2kparms,
1478 : krb5_keyblock **key)
1479 : {
1480 14 : krb5_keytab_key_proc_args *args = rk_UNCONST(keyseed);
1481 14 : krb5_keytab keytab = args->keytab;
1482 14 : krb5_principal principal = args->principal;
1483 : krb5_error_code ret;
1484 : krb5_keytab real_keytab;
1485 : krb5_keytab_entry entry;
1486 :
1487 14 : if(keytab == NULL)
1488 0 : krb5_kt_default(context, &real_keytab);
1489 : else
1490 14 : real_keytab = keytab;
1491 :
1492 14 : ret = krb5_kt_get_entry (context, real_keytab, principal,
1493 : 0, enctype, &entry);
1494 :
1495 14 : if (keytab == NULL)
1496 0 : krb5_kt_close (context, real_keytab);
1497 :
1498 14 : if (ret)
1499 0 : return ret;
1500 :
1501 14 : ret = krb5_copy_keyblock (context, &entry.keyblock, key);
1502 14 : krb5_kt_free_entry(context, &entry);
1503 14 : return ret;
1504 : }
1505 :
1506 :
1507 : /**
1508 : * Set the keytab to use for authentication.
1509 : *
1510 : * @param context a Kerberos 5 context.
1511 : * @param ctx ctx krb5_init_creds_context context.
1512 : * @param keytab the keytab to read the key from.
1513 : *
1514 : * @return 0 for success, or an Kerberos 5 error code, see krb5_get_error_message().
1515 : * @ingroup krb5_credential
1516 : */
1517 :
1518 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1519 7 : krb5_init_creds_set_keytab(krb5_context context,
1520 : krb5_init_creds_context ctx,
1521 : krb5_keytab keytab)
1522 : {
1523 : krb5_keytab_key_proc_args *a;
1524 : krb5_keytab_entry entry;
1525 : krb5_kt_cursor cursor;
1526 7 : krb5_enctype *etypes = NULL;
1527 : krb5_error_code ret;
1528 7 : size_t netypes = 0;
1529 7 : int kvno = 0;
1530 :
1531 7 : a = malloc(sizeof(*a));
1532 7 : if (a == NULL) {
1533 0 : krb5_set_error_message(context, ENOMEM,
1534 0 : N_("malloc: out of memory", ""));
1535 0 : return ENOMEM;
1536 : }
1537 :
1538 7 : a->principal = ctx->cred.client;
1539 7 : a->keytab = keytab;
1540 :
1541 7 : ctx->keytab_data = a;
1542 7 : ctx->keyseed = (void *)a;
1543 7 : ctx->keyproc = keytab_key_proc;
1544 :
1545 : /*
1546 : * We need to the KDC what enctypes we support for this keytab,
1547 : * esp if the keytab is really a password based entry, then the
1548 : * KDC might have more enctypes in the database then what we have
1549 : * in the keytab.
1550 : */
1551 :
1552 7 : ret = krb5_kt_start_seq_get(context, keytab, &cursor);
1553 7 : if(ret)
1554 0 : goto out;
1555 :
1556 122 : while(krb5_kt_next_entry(context, keytab, &entry, &cursor) == 0){
1557 : void *ptr;
1558 :
1559 108 : if (!krb5_principal_compare(context, entry.principal, ctx->cred.client))
1560 84 : goto next;
1561 :
1562 : /* check if we ahve this kvno already */
1563 24 : if (entry.vno > kvno) {
1564 : /* remove old list of etype */
1565 7 : if (etypes)
1566 0 : free(etypes);
1567 7 : etypes = NULL;
1568 7 : netypes = 0;
1569 7 : kvno = entry.vno;
1570 17 : } else if (entry.vno != kvno)
1571 3 : goto next;
1572 :
1573 : /* check if enctype is supported */
1574 21 : if (krb5_enctype_valid(context, entry.keyblock.keytype) != 0)
1575 0 : goto next;
1576 :
1577 : /* add enctype to supported list */
1578 21 : ptr = realloc(etypes, sizeof(etypes[0]) * (netypes + 2));
1579 21 : if (ptr == NULL)
1580 0 : goto next;
1581 :
1582 21 : etypes = ptr;
1583 21 : etypes[netypes] = entry.keyblock.keytype;
1584 21 : etypes[netypes + 1] = ETYPE_NULL;
1585 21 : netypes++;
1586 108 : next:
1587 108 : krb5_kt_free_entry(context, &entry);
1588 : }
1589 7 : krb5_kt_end_seq_get(context, keytab, &cursor);
1590 :
1591 7 : if (etypes) {
1592 7 : if (ctx->etypes)
1593 2 : free(ctx->etypes);
1594 7 : ctx->etypes = etypes;
1595 : }
1596 :
1597 7 : out:
1598 7 : return 0;
1599 : }
1600 :
1601 : static krb5_error_code KRB5_CALLCONV
1602 24 : keyblock_key_proc(krb5_context context, krb5_enctype enctype,
1603 : krb5_const_pointer keyseed,
1604 : krb5_salt salt, krb5_data *s2kparms,
1605 : krb5_keyblock **key)
1606 : {
1607 24 : return krb5_copy_keyblock (context, keyseed, key);
1608 : }
1609 :
1610 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1611 12 : krb5_init_creds_set_keyblock(krb5_context context,
1612 : krb5_init_creds_context ctx,
1613 : krb5_keyblock *keyblock)
1614 : {
1615 12 : ctx->keyseed = (void *)keyblock;
1616 12 : ctx->keyproc = keyblock_key_proc;
1617 :
1618 12 : return 0;
1619 : }
1620 :
1621 : /**
1622 : * The core loop if krb5_get_init_creds() function family. Create the
1623 : * packets and have the caller send them off to the KDC.
1624 : *
1625 : * If the caller want all work been done for them, use
1626 : * krb5_init_creds_get() instead.
1627 : *
1628 : * @param context a Kerberos 5 context.
1629 : * @param ctx ctx krb5_init_creds_context context.
1630 : * @param in input data from KDC, first round it should be reset by krb5_data_zer().
1631 : * @param out reply to KDC.
1632 : * @param hostinfo KDC address info, first round it can be NULL.
1633 : * @param flags status of the round, if
1634 : * KRB5_INIT_CREDS_STEP_FLAG_CONTINUE is set, continue one more round.
1635 : *
1636 : * @return 0 for success, or an Kerberos 5 error code, see
1637 : * krb5_get_error_message().
1638 : *
1639 : * @ingroup krb5_credential
1640 : */
1641 :
1642 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1643 51768 : krb5_init_creds_step(krb5_context context,
1644 : krb5_init_creds_context ctx,
1645 : krb5_data *in,
1646 : krb5_data *out,
1647 : krb5_krbhst_info *hostinfo,
1648 : unsigned int *flags)
1649 : {
1650 : krb5_error_code ret;
1651 51768 : size_t len = 0;
1652 : size_t size;
1653 :
1654 51768 : krb5_data_zero(out);
1655 :
1656 51768 : if (ctx->as_req.req_body.cname == NULL) {
1657 44186 : ret = init_as_req(context, ctx->flags, &ctx->cred,
1658 22093 : ctx->addrs, ctx->etypes, &ctx->as_req);
1659 22093 : if (ret) {
1660 0 : free_init_creds_ctx(context, ctx);
1661 0 : return ret;
1662 : }
1663 : }
1664 :
1665 : #define MAX_PA_COUNTER 10
1666 51768 : if (ctx->pa_counter > MAX_PA_COUNTER) {
1667 0 : krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
1668 0 : N_("Looping %d times while getting "
1669 : "initial credentials", ""),
1670 : ctx->pa_counter);
1671 0 : return KRB5_GET_IN_TKT_LOOP;
1672 : }
1673 51768 : ctx->pa_counter++;
1674 :
1675 51768 : _krb5_debug(context, 5, "krb5_get_init_creds: loop %d", ctx->pa_counter);
1676 :
1677 : /* Lets process the input packet */
1678 51768 : if (in && in->length) {
1679 : krb5_kdc_rep rep;
1680 :
1681 29675 : memset(&rep, 0, sizeof(rep));
1682 :
1683 29675 : _krb5_debug(context, 5, "krb5_get_init_creds: processing input");
1684 :
1685 29675 : ret = decode_AS_REP(in->data, in->length, &rep.kdc_rep, &size);
1686 29675 : if (ret == 0) {
1687 13985 : krb5_keyblock *key = NULL;
1688 13985 : unsigned eflags = EXTRACT_TICKET_AS_REQ | EXTRACT_TICKET_TIMESYNC;
1689 :
1690 13985 : if (ctx->flags.canonicalize) {
1691 12977 : eflags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH;
1692 12977 : eflags |= EXTRACT_TICKET_MATCH_REALM;
1693 : }
1694 13985 : if (ctx->ic_flags & KRB5_INIT_CREDS_NO_C_CANON_CHECK)
1695 12234 : eflags |= EXTRACT_TICKET_ALLOW_CNAME_MISMATCH;
1696 :
1697 13985 : ret = process_pa_data_to_key(context, ctx, &ctx->cred,
1698 : &ctx->as_req, &rep.kdc_rep, hostinfo, &key);
1699 13985 : if (ret) {
1700 0 : free_AS_REP(&rep.kdc_rep);
1701 0 : goto out;
1702 : }
1703 :
1704 13985 : _krb5_debug(context, 5, "krb5_get_init_creds: extracting ticket");
1705 :
1706 13985 : ret = _krb5_extract_ticket(context,
1707 : &rep,
1708 : &ctx->cred,
1709 : key,
1710 : NULL,
1711 : KRB5_KU_AS_REP_ENC_PART,
1712 : NULL,
1713 : ctx->nonce,
1714 : eflags,
1715 : NULL,
1716 : NULL);
1717 13985 : krb5_free_keyblock(context, key);
1718 :
1719 13985 : *flags = 0;
1720 :
1721 13985 : if (ret == 0)
1722 13985 : ret = copy_EncKDCRepPart(&rep.enc_part, &ctx->enc_part);
1723 :
1724 13985 : free_AS_REP(&rep.kdc_rep);
1725 13985 : free_EncASRepPart(&rep.enc_part);
1726 :
1727 13985 : return ret;
1728 :
1729 : } else {
1730 : /* let's try to parse it as a KRB-ERROR */
1731 :
1732 15690 : _krb5_debug(context, 5, "krb5_get_init_creds: got an error");
1733 :
1734 15690 : free_KRB_ERROR(&ctx->error);
1735 :
1736 15690 : ret = krb5_rd_error(context, in, &ctx->error);
1737 15690 : if(ret && in->length && ((char*)in->data)[0] == 4)
1738 0 : ret = KRB5KRB_AP_ERR_V4_REPLY;
1739 15690 : if (ret) {
1740 0 : _krb5_debug(context, 5, "krb5_get_init_creds: failed to read error");
1741 0 : goto out;
1742 : }
1743 :
1744 15690 : ret = krb5_error_from_rd_error(context, &ctx->error, &ctx->cred);
1745 :
1746 15690 : _krb5_debug(context, 5, "krb5_get_init_creds: KRB-ERROR %d", ret);
1747 :
1748 : /*
1749 : * If no preauth was set and KDC requires it, give it one
1750 : * more try.
1751 : */
1752 :
1753 15690 : if (ret == KRB5KDC_ERR_PREAUTH_REQUIRED) {
1754 :
1755 14238 : free_METHOD_DATA(&ctx->md);
1756 14533 : memset(&ctx->md, 0, sizeof(ctx->md));
1757 :
1758 14238 : if (ctx->error.e_data) {
1759 28181 : ret = decode_METHOD_DATA(ctx->error.e_data->data,
1760 13943 : ctx->error.e_data->length,
1761 : &ctx->md,
1762 : NULL);
1763 14238 : if (ret)
1764 0 : krb5_set_error_message(context, ret,
1765 0 : N_("Failed to decode METHOD-DATA", ""));
1766 : } else {
1767 0 : krb5_set_error_message(context, ret,
1768 0 : N_("Preauth required but no preauth "
1769 : "options send by KDC", ""));
1770 : }
1771 1452 : } else if (ret == KRB5KRB_AP_ERR_SKEW && context->kdc_sec_offset == 0) {
1772 : /*
1773 : * Try adapt to timeskrew when we are using pre-auth, and
1774 : * if there was a time skew, try again.
1775 : */
1776 0 : krb5_set_real_time(context, ctx->error.stime, -1);
1777 0 : if (context->kdc_sec_offset)
1778 0 : ret = 0;
1779 :
1780 0 : _krb5_debug(context, 10, "init_creds: err skew updating kdc offset to %d",
1781 : context->kdc_sec_offset);
1782 :
1783 0 : ctx->used_pa_types = 0;
1784 :
1785 1452 : } else if (ret == KRB5_KDC_ERR_WRONG_REALM && ctx->flags.canonicalize) {
1786 : /* client referal to a new realm */
1787 :
1788 256 : if (ctx->error.crealm == NULL) {
1789 0 : krb5_set_error_message(context, ret,
1790 0 : N_("Got a client referral, not but no realm", ""));
1791 0 : goto out;
1792 : }
1793 256 : _krb5_debug(context, 5,
1794 : "krb5_get_init_creds: got referal to realm %s",
1795 256 : *ctx->error.crealm);
1796 :
1797 256 : ret = krb5_principal_set_realm(context,
1798 : ctx->cred.client,
1799 256 : *ctx->error.crealm);
1800 :
1801 256 : if (ret)
1802 0 : goto out;
1803 :
1804 256 : if (krb5_principal_is_krbtgt(context, ctx->cred.server)) {
1805 256 : ret = krb5_init_creds_set_service(context, ctx, NULL);
1806 256 : if (ret)
1807 0 : goto out;
1808 : }
1809 :
1810 256 : free_AS_REQ(&ctx->as_req);
1811 256 : memset(&ctx->as_req, 0, sizeof(ctx->as_req));
1812 :
1813 256 : ctx->used_pa_types = 0;
1814 : }
1815 15690 : if (ret)
1816 1196 : goto out;
1817 : }
1818 : }
1819 :
1820 36587 : if (ctx->as_req.req_body.cname == NULL) {
1821 512 : ret = init_as_req(context, ctx->flags, &ctx->cred,
1822 256 : ctx->addrs, ctx->etypes, &ctx->as_req);
1823 256 : if (ret) {
1824 0 : free_init_creds_ctx(context, ctx);
1825 0 : return ret;
1826 : }
1827 : }
1828 :
1829 36587 : if (ctx->as_req.padata) {
1830 232 : free_METHOD_DATA(ctx->as_req.padata);
1831 232 : free(ctx->as_req.padata);
1832 232 : ctx->as_req.padata = NULL;
1833 : }
1834 :
1835 : /* Set a new nonce. */
1836 36587 : ctx->as_req.req_body.nonce = ctx->nonce;
1837 :
1838 : /* fill_in_md_data */
1839 36587 : ret = process_pa_data_to_md(context, &ctx->cred, &ctx->as_req, ctx,
1840 : &ctx->md, &ctx->as_req.padata,
1841 : ctx->prompter, ctx->prompter_data);
1842 36587 : if (ret)
1843 0 : goto out;
1844 :
1845 36587 : krb5_data_free(&ctx->req_buffer);
1846 :
1847 36587 : ASN1_MALLOC_ENCODE(AS_REQ,
1848 : ctx->req_buffer.data, ctx->req_buffer.length,
1849 : &ctx->as_req, &len, ret);
1850 36587 : if (ret)
1851 0 : goto out;
1852 36587 : if(len != ctx->req_buffer.length)
1853 0 : krb5_abortx(context, "internal error in ASN.1 encoder");
1854 :
1855 36587 : out->data = ctx->req_buffer.data;
1856 36587 : out->length = ctx->req_buffer.length;
1857 :
1858 36587 : *flags = KRB5_INIT_CREDS_STEP_FLAG_CONTINUE;
1859 :
1860 36587 : return 0;
1861 1196 : out:
1862 1196 : return ret;
1863 : }
1864 :
1865 : /**
1866 : * Extract the newly acquired credentials from krb5_init_creds_context
1867 : * context.
1868 : *
1869 : * @param context A Kerberos 5 context.
1870 : * @param ctx
1871 : * @param cred credentials, free with krb5_free_cred_contents().
1872 : *
1873 : * @return 0 for sucess or An Kerberos error code, see krb5_get_error_message().
1874 : */
1875 :
1876 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1877 13985 : krb5_init_creds_get_creds(krb5_context context,
1878 : krb5_init_creds_context ctx,
1879 : krb5_creds *cred)
1880 : {
1881 13985 : return krb5_copy_creds_contents(context, &ctx->cred, cred);
1882 : }
1883 :
1884 : /**
1885 : * Get the last error from the transaction.
1886 : *
1887 : * @return Returns 0 or an error code
1888 : *
1889 : * @ingroup krb5_credential
1890 : */
1891 :
1892 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1893 0 : krb5_init_creds_get_error(krb5_context context,
1894 : krb5_init_creds_context ctx,
1895 : KRB_ERROR *error)
1896 : {
1897 : krb5_error_code ret;
1898 :
1899 0 : ret = copy_KRB_ERROR(&ctx->error, error);
1900 0 : if (ret)
1901 0 : krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
1902 :
1903 0 : return ret;
1904 : }
1905 :
1906 : /**
1907 : * Free the krb5_init_creds_context allocated by krb5_init_creds_init().
1908 : *
1909 : * @param context A Kerberos 5 context.
1910 : * @param ctx The krb5_init_creds_context to free.
1911 : *
1912 : * @ingroup krb5_credential
1913 : */
1914 :
1915 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
1916 22093 : krb5_init_creds_free(krb5_context context,
1917 : krb5_init_creds_context ctx)
1918 : {
1919 22093 : free_init_creds_ctx(context, ctx);
1920 22093 : free(ctx);
1921 22093 : }
1922 :
1923 : /**
1924 : * Get new credentials as setup by the krb5_init_creds_context.
1925 : *
1926 : * @param context A Kerberos 5 context.
1927 : * @param ctx The krb5_init_creds_context to process.
1928 : *
1929 : * @ingroup krb5_credential
1930 : */
1931 :
1932 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1933 22093 : krb5_init_creds_get(krb5_context context, krb5_init_creds_context ctx)
1934 : {
1935 22093 : krb5_sendto_ctx stctx = NULL;
1936 22093 : krb5_krbhst_info *hostinfo = NULL;
1937 : krb5_error_code ret;
1938 : krb5_data in, out;
1939 22093 : unsigned int flags = 0;
1940 :
1941 22093 : krb5_data_zero(&in);
1942 22093 : krb5_data_zero(&out);
1943 :
1944 22093 : ret = krb5_sendto_ctx_alloc(context, &stctx);
1945 22093 : if (ret)
1946 0 : goto out;
1947 22093 : krb5_sendto_ctx_set_func(stctx, _krb5_kdc_retry, NULL);
1948 :
1949 : while (1) {
1950 80853 : flags = 0;
1951 51768 : ret = krb5_init_creds_step(context, ctx, &in, &out, hostinfo, &flags);
1952 51768 : krb5_data_free(&in);
1953 51768 : if (ret)
1954 1196 : goto out;
1955 :
1956 50572 : if ((flags & 1) == 0)
1957 13690 : break;
1958 :
1959 36587 : ret = krb5_sendto_context (context, stctx, &out,
1960 36587 : ctx->cred.client->realm, &in);
1961 36587 : if (ret)
1962 6912 : goto out;
1963 :
1964 : }
1965 :
1966 22093 : out:
1967 22093 : if (stctx)
1968 22093 : krb5_sendto_ctx_free(context, stctx);
1969 :
1970 22093 : return ret;
1971 : }
1972 :
1973 : /**
1974 : * Get new credentials using password.
1975 : *
1976 : * @ingroup krb5_credential
1977 : */
1978 :
1979 :
1980 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
1981 22070 : krb5_get_init_creds_password(krb5_context context,
1982 : krb5_creds *creds,
1983 : krb5_principal client,
1984 : const char *password,
1985 : krb5_prompter_fct prompter,
1986 : void *data,
1987 : krb5_deltat start_time,
1988 : const char *in_tkt_service,
1989 : krb5_get_init_creds_opt *options)
1990 : {
1991 : krb5_init_creds_context ctx;
1992 : char buf[BUFSIZ];
1993 : char buf2[BUFSIZ];
1994 : krb5_error_code ret;
1995 22070 : int chpw = 0;
1996 :
1997 22074 : again:
1998 22074 : ret = krb5_init_creds_init(context, client, prompter, data, start_time, options, &ctx);
1999 22074 : if (ret)
2000 0 : goto out;
2001 :
2002 22074 : ret = krb5_init_creds_set_service(context, ctx, in_tkt_service);
2003 22074 : if (ret)
2004 0 : goto out;
2005 :
2006 22074 : if (prompter != NULL && ctx->password == NULL && password == NULL) {
2007 : krb5_prompt prompt;
2008 : krb5_data password_data;
2009 : char *p, *q;
2010 :
2011 6 : krb5_unparse_name (context, client, &p);
2012 6 : asprintf (&q, "%s's Password: ", p);
2013 6 : free (p);
2014 6 : prompt.prompt = q;
2015 6 : password_data.data = buf;
2016 6 : password_data.length = sizeof(buf);
2017 6 : prompt.hidden = 1;
2018 6 : prompt.reply = &password_data;
2019 6 : prompt.type = KRB5_PROMPT_TYPE_PASSWORD;
2020 :
2021 6 : ret = (*prompter) (context, data, NULL, NULL, 1, &prompt);
2022 6 : free (q);
2023 6 : if (ret) {
2024 0 : memset (buf, 0, sizeof(buf));
2025 0 : ret = KRB5_LIBOS_PWDINTR;
2026 0 : krb5_clear_error_message (context);
2027 0 : goto out;
2028 : }
2029 6 : password = password_data.data;
2030 : }
2031 :
2032 22074 : if (password) {
2033 22074 : ret = krb5_init_creds_set_password(context, ctx, password);
2034 22074 : if (ret)
2035 0 : goto out;
2036 : }
2037 :
2038 22074 : ret = krb5_init_creds_get(context, ctx);
2039 :
2040 22074 : if (ret == 0)
2041 13966 : process_last_request(context, options, ctx);
2042 :
2043 :
2044 22074 : if (ret == KRB5KDC_ERR_KEY_EXPIRED && chpw == 0) {
2045 : /* try to avoid recursion */
2046 4 : if (in_tkt_service != NULL && strcmp(in_tkt_service, "kadmin/changepw") == 0)
2047 0 : goto out;
2048 :
2049 : /* don't try to change password where then where none */
2050 4 : if (prompter == NULL)
2051 0 : goto out;
2052 :
2053 4 : ret = change_password (context,
2054 : client,
2055 4 : ctx->password,
2056 : buf2,
2057 : sizeof(buf2),
2058 : prompter,
2059 : data,
2060 : options);
2061 4 : if (ret)
2062 0 : goto out;
2063 4 : chpw = 1;
2064 4 : password = buf2;
2065 4 : krb5_init_creds_free(context, ctx);
2066 4 : goto again;
2067 : }
2068 :
2069 22070 : out:
2070 22070 : if (ret == 0)
2071 13966 : krb5_init_creds_get_creds(context, ctx, creds);
2072 :
2073 22070 : if (ctx)
2074 22070 : krb5_init_creds_free(context, ctx);
2075 :
2076 22070 : memset(buf, 0, sizeof(buf));
2077 22070 : memset(buf2, 0, sizeof(buf2));
2078 22070 : return ret;
2079 : }
2080 :
2081 : /**
2082 : * Get new credentials using keyblock.
2083 : *
2084 : * @ingroup krb5_credential
2085 : */
2086 :
2087 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
2088 12 : krb5_get_init_creds_keyblock(krb5_context context,
2089 : krb5_creds *creds,
2090 : krb5_principal client,
2091 : krb5_keyblock *keyblock,
2092 : krb5_deltat start_time,
2093 : const char *in_tkt_service,
2094 : krb5_get_init_creds_opt *options)
2095 : {
2096 : krb5_init_creds_context ctx;
2097 : krb5_error_code ret;
2098 :
2099 12 : memset(creds, 0, sizeof(*creds));
2100 :
2101 12 : ret = krb5_init_creds_init(context, client, NULL, NULL, start_time, options, &ctx);
2102 12 : if (ret)
2103 0 : goto out;
2104 :
2105 12 : ret = krb5_init_creds_set_service(context, ctx, in_tkt_service);
2106 12 : if (ret)
2107 0 : goto out;
2108 :
2109 12 : ret = krb5_init_creds_set_keyblock(context, ctx, keyblock);
2110 12 : if (ret)
2111 0 : goto out;
2112 :
2113 12 : ret = krb5_init_creds_get(context, ctx);
2114 :
2115 12 : if (ret == 0)
2116 12 : process_last_request(context, options, ctx);
2117 :
2118 12 : out:
2119 12 : if (ret == 0)
2120 12 : krb5_init_creds_get_creds(context, ctx, creds);
2121 :
2122 12 : if (ctx)
2123 12 : krb5_init_creds_free(context, ctx);
2124 :
2125 12 : return ret;
2126 : }
2127 :
2128 : /**
2129 : * Get new credentials using keytab.
2130 : *
2131 : * @ingroup krb5_credential
2132 : */
2133 :
2134 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
2135 7 : krb5_get_init_creds_keytab(krb5_context context,
2136 : krb5_creds *creds,
2137 : krb5_principal client,
2138 : krb5_keytab keytab,
2139 : krb5_deltat start_time,
2140 : const char *in_tkt_service,
2141 : krb5_get_init_creds_opt *options)
2142 : {
2143 : krb5_init_creds_context ctx;
2144 : krb5_error_code ret;
2145 :
2146 7 : memset(creds, 0, sizeof(*creds));
2147 :
2148 7 : ret = krb5_init_creds_init(context, client, NULL, NULL, start_time, options, &ctx);
2149 7 : if (ret)
2150 0 : goto out;
2151 :
2152 7 : ret = krb5_init_creds_set_service(context, ctx, in_tkt_service);
2153 7 : if (ret)
2154 0 : goto out;
2155 :
2156 7 : ret = krb5_init_creds_set_keytab(context, ctx, keytab);
2157 7 : if (ret)
2158 0 : goto out;
2159 :
2160 7 : ret = krb5_init_creds_get(context, ctx);
2161 7 : if (ret == 0)
2162 7 : process_last_request(context, options, ctx);
2163 :
2164 7 : out:
2165 7 : if (ret == 0)
2166 7 : krb5_init_creds_get_creds(context, ctx, creds);
2167 :
2168 7 : if (ctx)
2169 7 : krb5_init_creds_free(context, ctx);
2170 :
2171 7 : return ret;
2172 : }
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