2 * Copyright (c) 2005, PADL Software Pty Ltd.
5 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
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8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of PADL Software nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 HEIMDAL_MUTEX ccache_mutex = HEIMDAL_MUTEX_INITIALIZER;
38 kcm_ccache_data *ccache_head = NULL;
39 static unsigned int ccache_nextid = 0;
41 char *kcm_ccache_nextid(pid_t pid, uid_t uid, gid_t gid)
47 HEIMDAL_MUTEX_lock(&ccache_mutex);
49 HEIMDAL_MUTEX_unlock(&ccache_mutex);
51 ret = asprintf(&name, "%ld:%u", (long)uid, n);
59 kcm_ccache_resolve(krb5_context context,
68 ret = KRB5_FCC_NOFILE;
70 HEIMDAL_MUTEX_lock(&ccache_mutex);
72 for (p = ccache_head; p != NULL; p = p->next) {
73 if ((p->flags & KCM_FLAGS_VALID) == 0)
75 if (strcmp(p->name, name) == 0) {
82 kcm_retain_ccache(context, p);
86 HEIMDAL_MUTEX_unlock(&ccache_mutex);
92 kcm_ccache_resolve_by_uuid(krb5_context context,
101 ret = KRB5_FCC_NOFILE;
103 HEIMDAL_MUTEX_lock(&ccache_mutex);
105 for (p = ccache_head; p != NULL; p = p->next) {
106 if ((p->flags & KCM_FLAGS_VALID) == 0)
108 if (memcmp(p->uuid, uuid, sizeof(kcmuuid_t)) == 0) {
115 kcm_retain_ccache(context, p);
119 HEIMDAL_MUTEX_unlock(&ccache_mutex);
125 kcm_ccache_get_uuids(krb5_context context, kcm_client *client, kcm_operation opcode, krb5_storage *sp)
130 ret = KRB5_FCC_NOFILE;
132 HEIMDAL_MUTEX_lock(&ccache_mutex);
134 for (p = ccache_head; p != NULL; p = p->next) {
135 if ((p->flags & KCM_FLAGS_VALID) == 0)
137 ret = kcm_access(context, client, opcode, p);
142 krb5_storage_write(sp, p->uuid, sizeof(p->uuid));
145 HEIMDAL_MUTEX_unlock(&ccache_mutex);
151 krb5_error_code kcm_debug_ccache(krb5_context context)
155 for (p = ccache_head; p != NULL; p = p->next) {
156 char *cpn = NULL, *spn = NULL;
160 if ((p->flags & KCM_FLAGS_VALID) == 0) {
161 kcm_log(7, "cache %08x: empty slot");
167 for (k = p->creds; k != NULL; k = k->next)
170 if (p->client != NULL)
171 krb5_unparse_name(context, p->client, &cpn);
172 if (p->server != NULL)
173 krb5_unparse_name(context, p->server, &spn);
175 kcm_log(7, "cache %08x: name %s refcnt %d flags %04x mode %04o "
176 "uid %d gid %d client %s server %s ncreds %d",
177 p, p->name, p->refcnt, p->flags, p->mode, p->uid, p->gid,
178 (cpn == NULL) ? "<none>" : cpn,
179 (spn == NULL) ? "<none>" : spn,
192 kcm_free_ccache_data_internal(krb5_context context,
193 kcm_ccache_data *cache)
195 KCM_ASSERT_VALID(cache);
197 if (cache->name != NULL) {
202 if (cache->flags & KCM_FLAGS_USE_KEYTAB) {
203 krb5_kt_close(context, cache->key.keytab);
204 cache->key.keytab = NULL;
205 } else if (cache->flags & KCM_FLAGS_USE_CACHED_KEY) {
206 krb5_free_keyblock_contents(context, &cache->key.keyblock);
207 krb5_keyblock_zero(&cache->key.keyblock);
216 kcm_zero_ccache_data_internal(context, cache);
219 cache->renew_life = 0;
220 cache->kdc_offset = 0;
225 HEIMDAL_MUTEX_unlock(&cache->mutex);
226 HEIMDAL_MUTEX_destroy(&cache->mutex);
231 kcm_ccache_destroy(krb5_context context, const char *name)
233 kcm_ccache *p, ccache;
236 ret = KRB5_FCC_NOFILE;
238 HEIMDAL_MUTEX_lock(&ccache_mutex);
239 for (p = &ccache_head; *p != NULL; p = &(*p)->next) {
240 if (((*p)->flags & KCM_FLAGS_VALID) == 0)
242 if (strcmp((*p)->name, name) == 0) {
250 if ((*p)->refcnt != 1) {
257 kcm_free_ccache_data_internal(context, ccache);
261 HEIMDAL_MUTEX_unlock(&ccache_mutex);
266 static krb5_error_code
267 kcm_ccache_alloc(krb5_context context,
271 kcm_ccache slot = NULL, p;
277 /* First, check for duplicates */
278 HEIMDAL_MUTEX_lock(&ccache_mutex);
280 for (p = ccache_head; p != NULL; p = p->next) {
281 if (p->flags & KCM_FLAGS_VALID) {
282 if (strcmp(p->name, name) == 0) {
286 } else if (slot == NULL)
294 * Create an enpty slot for us.
297 slot = (kcm_ccache_data *)malloc(sizeof(*slot));
302 slot->next = ccache_head;
303 HEIMDAL_MUTEX_init(&slot->mutex);
307 RAND_bytes(slot->uuid, sizeof(slot->uuid));
309 slot->name = strdup(name);
310 if (slot->name == NULL) {
316 slot->flags = KCM_FLAGS_VALID;
317 slot->mode = S_IRUSR | S_IWUSR;
323 slot->key.keytab = NULL;
325 slot->renew_life = 0;
326 slot->kdc_offset = 0;
333 HEIMDAL_MUTEX_unlock(&ccache_mutex);
337 HEIMDAL_MUTEX_unlock(&ccache_mutex);
338 if (new_slot && slot != NULL) {
339 HEIMDAL_MUTEX_destroy(&slot->mutex);
346 kcm_ccache_remove_creds_internal(krb5_context context,
353 struct kcm_creds *old;
355 krb5_free_cred_contents(context, &k->cred);
360 ccache->creds = NULL;
366 kcm_ccache_remove_creds(krb5_context context,
371 KCM_ASSERT_VALID(ccache);
373 HEIMDAL_MUTEX_lock(&ccache->mutex);
374 ret = kcm_ccache_remove_creds_internal(context, ccache);
375 HEIMDAL_MUTEX_unlock(&ccache->mutex);
381 kcm_zero_ccache_data_internal(krb5_context context,
382 kcm_ccache_data *cache)
384 if (cache->client != NULL) {
385 krb5_free_principal(context, cache->client);
386 cache->client = NULL;
389 if (cache->server != NULL) {
390 krb5_free_principal(context, cache->server);
391 cache->server = NULL;
394 kcm_ccache_remove_creds_internal(context, cache);
400 kcm_zero_ccache_data(krb5_context context,
405 KCM_ASSERT_VALID(cache);
407 HEIMDAL_MUTEX_lock(&cache->mutex);
408 ret = kcm_zero_ccache_data_internal(context, cache);
409 HEIMDAL_MUTEX_unlock(&cache->mutex);
415 kcm_retain_ccache(krb5_context context,
418 KCM_ASSERT_VALID(ccache);
420 HEIMDAL_MUTEX_lock(&ccache->mutex);
422 HEIMDAL_MUTEX_unlock(&ccache->mutex);
428 kcm_release_ccache(krb5_context context, kcm_ccache c)
430 krb5_error_code ret = 0;
434 HEIMDAL_MUTEX_lock(&c->mutex);
435 if (c->refcnt == 1) {
436 kcm_free_ccache_data_internal(context, c);
440 HEIMDAL_MUTEX_unlock(&c->mutex);
447 kcm_ccache_gen_new(krb5_context context,
456 name = kcm_ccache_nextid(pid, uid, gid);
458 return KRB5_CC_NOMEM;
461 ret = kcm_ccache_new(context, name, ccache);
468 kcm_ccache_new(krb5_context context,
474 ret = kcm_ccache_alloc(context, name, ccache);
477 * one reference is held by the linked list,
480 kcm_retain_ccache(context, *ccache);
487 kcm_ccache_destroy_if_empty(krb5_context context,
492 KCM_ASSERT_VALID(ccache);
494 if (ccache->creds == NULL) {
495 ret = kcm_ccache_destroy(context, ccache->name);
503 kcm_ccache_store_cred(krb5_context context,
511 KCM_ASSERT_VALID(ccache);
513 HEIMDAL_MUTEX_lock(&ccache->mutex);
514 ret = kcm_ccache_store_cred_internal(context, ccache, creds, copy, &tmp);
515 HEIMDAL_MUTEX_unlock(&ccache->mutex);
521 kcm_ccache_find_cred_uuid(krb5_context context,
527 for (c = ccache->creds; c != NULL; c = c->next)
528 if (memcmp(c->uuid, uuid, sizeof(c->uuid)) == 0)
537 kcm_ccache_store_cred_internal(krb5_context context,
543 struct kcm_creds **c;
546 for (c = &ccache->creds; *c != NULL; c = &(*c)->next)
549 *c = (struct kcm_creds *)calloc(1, sizeof(**c));
551 return KRB5_CC_NOMEM;
553 RAND_bytes((*c)->uuid, sizeof((*c)->uuid));
555 *credp = &(*c)->cred;
558 ret = krb5_copy_creds_contents(context, creds, *credp);
572 kcm_ccache_remove_cred_internal(krb5_context context,
574 krb5_flags whichfields,
575 const krb5_creds *mcreds)
578 struct kcm_creds **c;
580 ret = KRB5_CC_NOTFOUND;
582 for (c = &ccache->creds; *c != NULL; c = &(*c)->next) {
583 if (krb5_compare_creds(context, whichfields, mcreds, &(*c)->cred)) {
584 struct kcm_creds *cred = *c;
587 krb5_free_cred_contents(context, &cred->cred);
599 kcm_ccache_remove_cred(krb5_context context,
601 krb5_flags whichfields,
602 const krb5_creds *mcreds)
606 KCM_ASSERT_VALID(ccache);
608 HEIMDAL_MUTEX_lock(&ccache->mutex);
609 ret = kcm_ccache_remove_cred_internal(context, ccache, whichfields, mcreds);
610 HEIMDAL_MUTEX_unlock(&ccache->mutex);
616 kcm_ccache_retrieve_cred_internal(krb5_context context,
618 krb5_flags whichfields,
619 const krb5_creds *mcreds,
626 memset(creds, 0, sizeof(*creds));
631 for (c = ccache->creds; c != NULL; c = c->next) {
632 match = krb5_compare_creds(context, whichfields, mcreds, &c->cred);
646 kcm_ccache_retrieve_cred(krb5_context context,
648 krb5_flags whichfields,
649 const krb5_creds *mcreds,
654 KCM_ASSERT_VALID(ccache);
656 HEIMDAL_MUTEX_lock(&ccache->mutex);
657 ret = kcm_ccache_retrieve_cred_internal(context, ccache,
658 whichfields, mcreds, credp);
659 HEIMDAL_MUTEX_unlock(&ccache->mutex);
665 kcm_ccache_first_name(kcm_client *client)
670 HEIMDAL_MUTEX_lock(&ccache_mutex);
672 for (p = ccache_head; p != NULL; p = p->next) {
673 if (kcm_is_same_session(client, p->uid, p->session))
677 name = strdup(p->name);
678 HEIMDAL_MUTEX_unlock(&ccache_mutex);