2 * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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.
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.
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
36 #include "krb5_locl.h"
38 typedef struct krb5_mcache {
42 krb5_principal primary_principal;
47 struct krb5_mcache *next;
49 krb5_deltat kdc_offset;
52 static HEIMDAL_MUTEX mcc_mutex = HEIMDAL_MUTEX_INITIALIZER;
53 static struct krb5_mcache *mcc_head;
55 #define MCACHE(X) ((krb5_mcache *)(X)->data.data)
57 #define MISDEAD(X) ((X)->dead)
59 static const char* KRB5_CALLCONV
60 mcc_get_name(krb5_context context,
63 return MCACHE(id)->name;
66 static krb5_mcache * KRB5_CALLCONV
67 mcc_alloc(const char *name)
76 ret = asprintf(&m->name, "%p", m);
78 m->name = strdup(name);
79 if(ret < 0 || m->name == NULL) {
83 /* check for dups first */
84 HEIMDAL_MUTEX_lock(&mcc_mutex);
85 for (m_c = mcc_head; m_c != NULL; m_c = m_c->next)
86 if (strcmp(m->name, m_c->name) == 0)
91 HEIMDAL_MUTEX_unlock(&mcc_mutex);
97 m->primary_principal = NULL;
99 m->mtime = time(NULL);
103 HEIMDAL_MUTEX_unlock(&mcc_mutex);
107 static krb5_error_code KRB5_CALLCONV
108 mcc_resolve(krb5_context context, krb5_ccache *id, const char *res)
112 HEIMDAL_MUTEX_lock(&mcc_mutex);
113 for (m = mcc_head; m != NULL; m = m->next)
114 if (strcmp(m->name, res) == 0)
116 HEIMDAL_MUTEX_unlock(&mcc_mutex);
120 (*id)->data.data = m;
121 (*id)->data.length = sizeof(*m);
127 krb5_set_error_message(context, KRB5_CC_NOMEM,
128 N_("malloc: out of memory", ""));
129 return KRB5_CC_NOMEM;
132 (*id)->data.data = m;
133 (*id)->data.length = sizeof(*m);
139 static krb5_error_code KRB5_CALLCONV
140 mcc_gen_new(krb5_context context, krb5_ccache *id)
147 krb5_set_error_message(context, KRB5_CC_NOMEM,
148 N_("malloc: out of memory", ""));
149 return KRB5_CC_NOMEM;
152 (*id)->data.data = m;
153 (*id)->data.length = sizeof(*m);
158 static krb5_error_code KRB5_CALLCONV
159 mcc_initialize(krb5_context context,
161 krb5_principal primary_principal)
163 krb5_mcache *m = MCACHE(id);
165 m->mtime = time(NULL);
166 return krb5_copy_principal (context,
168 &m->primary_principal);
172 mcc_close_internal(krb5_mcache *m)
174 if (--m->refcnt != 0)
184 static krb5_error_code KRB5_CALLCONV
185 mcc_close(krb5_context context,
188 if (mcc_close_internal(MCACHE(id)))
189 krb5_data_free(&id->data);
193 static krb5_error_code KRB5_CALLCONV
194 mcc_destroy(krb5_context context,
197 krb5_mcache **n, *m = MCACHE(id);
201 krb5_abortx(context, "mcc_destroy: refcnt already 0");
204 /* if this is an active mcache, remove it from the linked
205 list, and free all data */
206 HEIMDAL_MUTEX_lock(&mcc_mutex);
207 for(n = &mcc_head; n && *n; n = &(*n)->next) {
213 HEIMDAL_MUTEX_unlock(&mcc_mutex);
214 if (m->primary_principal != NULL) {
215 krb5_free_principal (context, m->primary_principal);
216 m->primary_principal = NULL;
224 krb5_free_cred_contents (context, &l->cred);
234 static krb5_error_code KRB5_CALLCONV
235 mcc_store_cred(krb5_context context,
239 krb5_mcache *m = MCACHE(id);
246 l = malloc (sizeof(*l));
248 krb5_set_error_message(context, KRB5_CC_NOMEM,
249 N_("malloc: out of memory", ""));
250 return KRB5_CC_NOMEM;
254 memset (&l->cred, 0, sizeof(l->cred));
255 ret = krb5_copy_creds_contents (context, creds, &l->cred);
261 m->mtime = time(NULL);
265 static krb5_error_code KRB5_CALLCONV
266 mcc_get_principal(krb5_context context,
268 krb5_principal *principal)
270 krb5_mcache *m = MCACHE(id);
272 if (MISDEAD(m) || m->primary_principal == NULL)
274 return krb5_copy_principal (context,
275 m->primary_principal,
279 static krb5_error_code KRB5_CALLCONV
280 mcc_get_first (krb5_context context,
282 krb5_cc_cursor *cursor)
284 krb5_mcache *m = MCACHE(id);
293 static krb5_error_code KRB5_CALLCONV
294 mcc_get_next (krb5_context context,
296 krb5_cc_cursor *cursor,
299 krb5_mcache *m = MCACHE(id);
308 return krb5_copy_creds_contents (context,
315 static krb5_error_code KRB5_CALLCONV
316 mcc_end_get (krb5_context context,
318 krb5_cc_cursor *cursor)
323 static krb5_error_code KRB5_CALLCONV
324 mcc_remove_cred(krb5_context context,
329 krb5_mcache *m = MCACHE(id);
331 for(q = &m->creds, p = *q; p; p = *q) {
332 if(krb5_compare_creds(context, which, mcreds, &p->cred)) {
334 krb5_free_cred_contents(context, &p->cred);
336 m->mtime = time(NULL);
343 static krb5_error_code KRB5_CALLCONV
344 mcc_set_flags(krb5_context context,
355 static krb5_error_code KRB5_CALLCONV
356 mcc_get_cache_first(krb5_context context, krb5_cc_cursor *cursor)
358 struct mcache_iter *iter;
360 iter = calloc(1, sizeof(*iter));
362 krb5_set_error_message(context, ENOMEM,
363 N_("malloc: out of memory", ""));
367 HEIMDAL_MUTEX_lock(&mcc_mutex);
368 iter->cache = mcc_head;
370 iter->cache->refcnt++;
371 HEIMDAL_MUTEX_unlock(&mcc_mutex);
377 static krb5_error_code KRB5_CALLCONV
378 mcc_get_cache_next(krb5_context context, krb5_cc_cursor cursor, krb5_ccache *id)
380 struct mcache_iter *iter = cursor;
384 if (iter->cache == NULL)
387 HEIMDAL_MUTEX_lock(&mcc_mutex);
391 iter->cache = m->next;
392 HEIMDAL_MUTEX_unlock(&mcc_mutex);
394 ret = _krb5_cc_allocate(context, &krb5_mcc_ops, id);
398 (*id)->data.data = m;
399 (*id)->data.length = sizeof(*m);
404 static krb5_error_code KRB5_CALLCONV
405 mcc_end_cache_get(krb5_context context, krb5_cc_cursor cursor)
407 struct mcache_iter *iter = cursor;
410 mcc_close_internal(iter->cache);
416 static krb5_error_code KRB5_CALLCONV
417 mcc_move(krb5_context context, krb5_ccache from, krb5_ccache to)
419 krb5_mcache *mfrom = MCACHE(from), *mto = MCACHE(to);
421 krb5_principal principal;
424 HEIMDAL_MUTEX_lock(&mcc_mutex);
426 /* drop the from cache from the linked list to avoid lookups */
427 for(n = &mcc_head; n && *n; n = &(*n)->next) {
436 mto->creds = mfrom->creds;
437 mfrom->creds = creds;
439 principal = mto->primary_principal;
440 mto->primary_principal = mfrom->primary_principal;
441 mfrom->primary_principal = principal;
443 mto->mtime = mfrom->mtime = time(NULL);
445 HEIMDAL_MUTEX_unlock(&mcc_mutex);
446 mcc_destroy(context, from);
451 static krb5_error_code KRB5_CALLCONV
452 mcc_default_name(krb5_context context, char **str)
454 *str = strdup("MEMORY:");
456 krb5_set_error_message(context, ENOMEM,
457 N_("malloc: out of memory", ""));
463 static krb5_error_code KRB5_CALLCONV
464 mcc_lastchange(krb5_context context, krb5_ccache id, krb5_timestamp *mtime)
466 *mtime = MCACHE(id)->mtime;
470 static krb5_error_code KRB5_CALLCONV
471 mcc_set_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat kdc_offset)
473 krb5_mcache *m = MCACHE(id);
474 m->kdc_offset = kdc_offset;
478 static krb5_error_code KRB5_CALLCONV
479 mcc_get_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat *kdc_offset)
481 krb5_mcache *m = MCACHE(id);
482 *kdc_offset = m->kdc_offset;
488 * Variable containing the MEMORY based credential cache implemention.
490 * @ingroup krb5_ccache
493 KRB5_LIB_VARIABLE const krb5_cc_ops krb5_mcc_ops = {
503 NULL, /* mcc_retrieve */