Line data Source code
1 : /*
2 : * Copyright (c) 1997 - 2004 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 : #undef __attribute__
39 : #define __attribute__(x)
40 :
41 : /**
42 : * @page krb5_init_creds_intro The initial credential handing functions
43 : * @section section_krb5_init_creds Initial credential
44 : *
45 : * Functions to get initial credentials: @ref krb5_credential .
46 : */
47 :
48 : /**
49 : * Allocate a new krb5_get_init_creds_opt structure, free with
50 : * krb5_get_init_creds_opt_free().
51 : *
52 : * @ingroup krb5_credential
53 : */
54 :
55 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
56 21893 : krb5_get_init_creds_opt_alloc(krb5_context context,
57 : krb5_get_init_creds_opt **opt)
58 : {
59 585 : krb5_get_init_creds_opt *o;
60 :
61 21893 : *opt = NULL;
62 21893 : o = calloc(1, sizeof(*o));
63 21893 : if (o == NULL)
64 0 : return krb5_enomem(context);
65 :
66 21893 : o->opt_private = calloc(1, sizeof(*o->opt_private));
67 21893 : if (o->opt_private == NULL) {
68 0 : free(o);
69 0 : return krb5_enomem(context);
70 : }
71 21893 : o->opt_private->refcount = 1;
72 21893 : *opt = o;
73 21893 : return 0;
74 : }
75 :
76 : /**
77 : * Free krb5_get_init_creds_opt structure.
78 : *
79 : * @ingroup krb5_credential
80 : */
81 :
82 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
83 21621 : krb5_get_init_creds_opt_free(krb5_context context,
84 : krb5_get_init_creds_opt *opt)
85 : {
86 21621 : if (opt == NULL || opt->opt_private == NULL)
87 48 : return;
88 21573 : if (opt->opt_private->refcount < 1) /* abort ? */
89 0 : return;
90 21573 : if (--opt->opt_private->refcount == 0) {
91 21573 : _krb5_get_init_creds_opt_free_pkinit(opt);
92 21573 : free(opt->opt_private);
93 : }
94 21573 : memset(opt, 0, sizeof(*opt));
95 21573 : free(opt);
96 : }
97 :
98 : static int
99 11427 : get_config_time (krb5_context context,
100 : const char *realm,
101 : const char *name,
102 : int def)
103 : {
104 585 : int ret;
105 :
106 11427 : ret = krb5_config_get_time (context, NULL,
107 : "realms",
108 : realm,
109 : name,
110 : NULL);
111 11427 : if (ret >= 0)
112 0 : return ret;
113 11427 : ret = krb5_config_get_time (context, NULL,
114 : "libdefaults",
115 : name,
116 : NULL);
117 11427 : if (ret >= 0)
118 0 : return ret;
119 10842 : return def;
120 : }
121 :
122 : static krb5_boolean
123 22854 : get_config_bool (krb5_context context,
124 : krb5_boolean def_value,
125 : const char *realm,
126 : const char *name)
127 : {
128 1170 : krb5_boolean b;
129 :
130 22854 : b = krb5_config_get_bool_default(context, NULL, def_value,
131 : "realms", realm, name, NULL);
132 22854 : if (b != def_value)
133 0 : return b;
134 22854 : b = krb5_config_get_bool_default (context, NULL, def_value,
135 : "libdefaults", name, NULL);
136 22854 : if (b != def_value)
137 0 : return b;
138 21684 : return def_value;
139 : }
140 :
141 : /*
142 : * set all the values in `opt' to the appropriate values for
143 : * application `appname' (default to getprogname() if NULL), and realm
144 : * `realm'. First looks in [appdefaults] but falls back to
145 : * [realms] or [libdefaults] for some of the values.
146 : */
147 :
148 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
149 11427 : krb5_get_init_creds_opt_set_default_flags(krb5_context context,
150 : const char *appname,
151 : krb5_const_realm realm,
152 : krb5_get_init_creds_opt *opt)
153 : {
154 585 : krb5_boolean b;
155 585 : time_t t;
156 :
157 11427 : b = get_config_bool (context, KRB5_FORWARDABLE_DEFAULT,
158 : realm, "forwardable");
159 11427 : krb5_appdefault_boolean(context, appname, realm, "forwardable", b, &b);
160 11427 : krb5_get_init_creds_opt_set_forwardable(opt, b);
161 :
162 11427 : b = get_config_bool (context, FALSE, realm, "proxiable");
163 11427 : krb5_appdefault_boolean(context, appname, realm, "proxiable", b, &b);
164 11427 : krb5_get_init_creds_opt_set_proxiable (opt, b);
165 :
166 11427 : krb5_appdefault_time(context, appname, realm, "ticket_lifetime", 0, &t);
167 11427 : if (t == 0)
168 0 : t = get_config_time (context, realm, "ticket_lifetime", 0);
169 11427 : if(t != 0)
170 11427 : krb5_get_init_creds_opt_set_tkt_life(opt, t);
171 :
172 11427 : krb5_appdefault_time(context, appname, realm, "renew_lifetime", 0, &t);
173 11427 : if (t == 0)
174 11427 : t = get_config_time (context, realm, "renew_lifetime", 0);
175 11427 : if(t != 0)
176 0 : krb5_get_init_creds_opt_set_renew_life(opt, t);
177 :
178 11427 : krb5_appdefault_boolean(context, appname, realm, "no-addresses",
179 : KRB5_ADDRESSLESS_DEFAULT, &b);
180 11427 : krb5_get_init_creds_opt_set_addressless (context, opt, b);
181 :
182 : #if 0
183 : krb5_appdefault_boolean(context, appname, realm, "anonymous", FALSE, &b);
184 : krb5_get_init_creds_opt_set_anonymous (opt, b);
185 :
186 : krb5_get_init_creds_opt_set_etype_list(opt, enctype,
187 : etype_str.num_strings);
188 :
189 : krb5_get_init_creds_opt_set_salt(krb5_get_init_creds_opt *opt,
190 : krb5_data *salt);
191 :
192 : krb5_get_init_creds_opt_set_preauth_list(krb5_get_init_creds_opt *opt,
193 : krb5_preauthtype *preauth_list,
194 : int preauth_list_length);
195 : #endif
196 11427 : }
197 :
198 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
199 0 : krb5_get_init_creds_opt_set_change_password_prompt(krb5_get_init_creds_opt *opt,
200 : int change_password_prompt)
201 : {
202 0 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_CHANGE_PASSWORD_PROMPT;
203 0 : opt->change_password_prompt = change_password_prompt;
204 0 : }
205 :
206 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
207 11547 : krb5_get_init_creds_opt_set_tkt_life(krb5_get_init_creds_opt *opt,
208 : krb5_deltat tkt_life)
209 : {
210 11547 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_TKT_LIFE;
211 11547 : opt->tkt_life = tkt_life;
212 11547 : }
213 :
214 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
215 8511 : krb5_get_init_creds_opt_set_renew_life(krb5_get_init_creds_opt *opt,
216 : krb5_deltat renew_life)
217 : {
218 8511 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_RENEW_LIFE;
219 8511 : opt->renew_life = renew_life;
220 8511 : }
221 :
222 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
223 19922 : krb5_get_init_creds_opt_set_forwardable(krb5_get_init_creds_opt *opt,
224 : int forwardable)
225 : {
226 19922 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_FORWARDABLE;
227 19922 : opt->forwardable = forwardable;
228 19922 : }
229 :
230 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
231 11440 : krb5_get_init_creds_opt_set_proxiable(krb5_get_init_creds_opt *opt,
232 : int proxiable)
233 : {
234 11440 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_PROXIABLE;
235 11440 : opt->proxiable = proxiable;
236 11440 : }
237 :
238 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
239 26 : krb5_get_init_creds_opt_set_etype_list(krb5_get_init_creds_opt *opt,
240 : krb5_enctype *etype_list,
241 : int etype_list_length)
242 : {
243 26 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_ETYPE_LIST;
244 26 : opt->etype_list = etype_list;
245 26 : opt->etype_list_length = etype_list_length;
246 26 : }
247 :
248 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
249 3 : krb5_get_init_creds_opt_set_address_list(krb5_get_init_creds_opt *opt,
250 : krb5_addresses *addresses)
251 : {
252 3 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_ADDRESS_LIST;
253 3 : opt->address_list = addresses;
254 3 : }
255 :
256 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
257 0 : krb5_get_init_creds_opt_set_preauth_list(krb5_get_init_creds_opt *opt,
258 : krb5_preauthtype *preauth_list,
259 : int preauth_list_length)
260 : {
261 0 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_PREAUTH_LIST;
262 0 : opt->preauth_list_length = preauth_list_length;
263 0 : opt->preauth_list = preauth_list;
264 0 : }
265 :
266 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
267 0 : krb5_get_init_creds_opt_set_salt(krb5_get_init_creds_opt *opt,
268 : krb5_data *salt)
269 : {
270 0 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_SALT;
271 0 : opt->salt = salt;
272 0 : }
273 :
274 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
275 104 : krb5_get_init_creds_opt_set_anonymous(krb5_get_init_creds_opt *opt,
276 : int anonymous)
277 : {
278 104 : opt->flags |= KRB5_GET_INIT_CREDS_OPT_ANONYMOUS;
279 104 : opt->anonymous = anonymous;
280 104 : }
281 :
282 : static krb5_error_code
283 54563 : require_ext_opt(krb5_context context,
284 : krb5_get_init_creds_opt *opt,
285 : const char *type)
286 : {
287 54563 : if (opt->opt_private == NULL) {
288 0 : krb5_set_error_message(context, EINVAL,
289 0 : N_("%s on non extendable opt", ""), type);
290 0 : return EINVAL;
291 : }
292 52808 : return 0;
293 : }
294 :
295 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
296 0 : krb5_get_init_creds_opt_set_pa_password(krb5_context context,
297 : krb5_get_init_creds_opt *opt,
298 : const char *password,
299 : krb5_s2k_proc key_proc)
300 : {
301 0 : krb5_error_code ret;
302 0 : ret = require_ext_opt(context, opt, "init_creds_opt_set_pa_password");
303 0 : if (ret)
304 0 : return ret;
305 0 : opt->opt_private->password = password;
306 0 : opt->opt_private->key_proc = key_proc;
307 0 : return 0;
308 : }
309 :
310 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
311 114 : krb5_get_init_creds_opt_set_pac_request(krb5_context context,
312 : krb5_get_init_creds_opt *opt,
313 : krb5_boolean req_pac)
314 : {
315 0 : krb5_error_code ret;
316 114 : ret = require_ext_opt(context, opt, "init_creds_opt_set_pac_req");
317 114 : if (ret)
318 0 : return ret;
319 114 : opt->opt_private->req_pac = req_pac ?
320 114 : KRB5_INIT_CREDS_TRISTATE_TRUE :
321 : KRB5_INIT_CREDS_TRISTATE_FALSE;
322 114 : return 0;
323 : }
324 :
325 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
326 11427 : krb5_get_init_creds_opt_set_addressless(krb5_context context,
327 : krb5_get_init_creds_opt *opt,
328 : krb5_boolean addressless)
329 : {
330 585 : krb5_error_code ret;
331 11427 : ret = require_ext_opt(context, opt, "init_creds_opt_set_pac_req");
332 11427 : if (ret)
333 0 : return ret;
334 11427 : if (addressless)
335 11427 : opt->opt_private->addressless = KRB5_INIT_CREDS_TRISTATE_TRUE;
336 : else
337 0 : opt->opt_private->addressless = KRB5_INIT_CREDS_TRISTATE_FALSE;
338 10842 : return 0;
339 : }
340 :
341 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
342 21494 : krb5_get_init_creds_opt_set_canonicalize(krb5_context context,
343 : krb5_get_init_creds_opt *opt,
344 : krb5_boolean req)
345 : {
346 585 : krb5_error_code ret;
347 21494 : ret = require_ext_opt(context, opt, "init_creds_opt_set_canonicalize");
348 21494 : if (ret)
349 0 : return ret;
350 21494 : if (req)
351 20854 : opt->opt_private->flags |= KRB5_INIT_CREDS_CANONICALIZE;
352 : else
353 640 : opt->opt_private->flags &= ~KRB5_INIT_CREDS_CANONICALIZE;
354 20909 : return 0;
355 : }
356 :
357 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
358 21528 : krb5_get_init_creds_opt_set_win2k(krb5_context context,
359 : krb5_get_init_creds_opt *opt,
360 : krb5_boolean req)
361 : {
362 585 : krb5_error_code ret;
363 21528 : ret = require_ext_opt(context, opt, "init_creds_opt_set_win2k");
364 21528 : if (ret)
365 0 : return ret;
366 21528 : if (req) {
367 20648 : opt->opt_private->flags |= KRB5_INIT_CREDS_NO_C_CANON_CHECK;
368 20648 : opt->opt_private->flags |= KRB5_INIT_CREDS_NO_C_NO_EKU_CHECK;
369 20648 : opt->opt_private->flags |= KRB5_INIT_CREDS_PKINIT_NO_KRBTGT_OTHERNAME_CHECK;
370 : } else {
371 880 : opt->opt_private->flags &= ~KRB5_INIT_CREDS_NO_C_CANON_CHECK;
372 880 : opt->opt_private->flags &= ~KRB5_INIT_CREDS_NO_C_NO_EKU_CHECK;
373 880 : opt->opt_private->flags &= ~KRB5_INIT_CREDS_PKINIT_NO_KRBTGT_OTHERNAME_CHECK;
374 : }
375 20943 : return 0;
376 : }
377 :
378 :
379 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
380 0 : krb5_get_init_creds_opt_set_process_last_req(krb5_context context,
381 : krb5_get_init_creds_opt *opt,
382 : krb5_gic_process_last_req func,
383 : void *ctx)
384 : {
385 0 : krb5_error_code ret;
386 0 : ret = require_ext_opt(context, opt, "init_creds_opt_set_process_last_req");
387 0 : if (ret)
388 0 : return ret;
389 :
390 0 : opt->opt_private->lr.func = func;
391 0 : opt->opt_private->lr.ctx = ctx;
392 :
393 0 : return 0;
394 : }
395 :
396 :
397 : #ifndef HEIMDAL_SMALLER
398 :
399 : /**
400 : * Deprecated: use krb5_get_init_creds_opt_alloc().
401 : *
402 : * The reason krb5_get_init_creds_opt_init() is deprecated is that
403 : * krb5_get_init_creds_opt is a static structure and for ABI reason it
404 : * can't grow, ie can't add new functionality.
405 : *
406 : * @ingroup krb5_deprecated
407 : */
408 :
409 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
410 0 : krb5_get_init_creds_opt_init(krb5_get_init_creds_opt *opt)
411 : KRB5_DEPRECATED_FUNCTION("Use krb5_get_init_creds_opt_alloc instead")
412 : {
413 0 : memset (opt, 0, sizeof(*opt));
414 0 : }
415 :
416 : /**
417 : * Deprecated: use the new krb5_init_creds_init() and
418 : * krb5_init_creds_get_error().
419 : *
420 : * @ingroup krb5_deprecated
421 : */
422 :
423 : KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
424 0 : krb5_get_init_creds_opt_get_error(krb5_context context,
425 : krb5_get_init_creds_opt *opt,
426 : KRB_ERROR **error)
427 : KRB5_DEPRECATED_FUNCTION("Use X instead")
428 : {
429 0 : *error = calloc(1, sizeof(**error));
430 0 : if (*error == NULL)
431 0 : return krb5_enomem(context);
432 :
433 0 : return 0;
434 : }
435 :
436 : #endif /* HEIMDAL_SMALLER */
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