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/*
* Copyright (c) 2005, PADL Software Pty Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of PADL Software nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kcm_locl.h"
RCSID("$Id: cursor.c 17447 2006-05-05 10:52:01Z lha $");
krb5_error_code
kcm_cursor_new(krb5_context context,
pid_t pid,
kcm_ccache ccache,
uint32_t *cursor)
{
kcm_cursor **p;
krb5_error_code ret;
*cursor = 0;
KCM_ASSERT_VALID(ccache);
HEIMDAL_MUTEX_lock(&ccache->mutex);
for (p = &ccache->cursors; *p != NULL; p = &(*p)->next)
;
*p = (kcm_cursor *)malloc(sizeof(kcm_cursor));
if (*p == NULL) {
ret = KRB5_CC_NOMEM;
goto out;
}
(*p)->pid = pid;
(*p)->key = ++ccache->n_cursor;
(*p)->credp = ccache->creds;
(*p)->next = NULL;
*cursor = (*p)->key;
ret = 0;
out:
HEIMDAL_MUTEX_unlock(&ccache->mutex);
return ret;
}
krb5_error_code
kcm_cursor_find(krb5_context context,
pid_t pid,
kcm_ccache ccache,
uint32_t key,
kcm_cursor **cursor)
{
kcm_cursor *p;
krb5_error_code ret;
KCM_ASSERT_VALID(ccache);
if (key == 0)
return KRB5_CC_NOTFOUND;
ret = KRB5_CC_END;
HEIMDAL_MUTEX_lock(&ccache->mutex);
for (p = ccache->cursors; p != NULL; p = p->next) {
if (p->key == key) {
if (p->pid != pid)
ret = KRB5_FCC_PERM;
else
ret = 0;
break;
}
}
if (ret == 0)
*cursor = p;
HEIMDAL_MUTEX_unlock(&ccache->mutex);
return ret;
}
krb5_error_code
kcm_cursor_delete(krb5_context context,
pid_t pid,
kcm_ccache ccache,
uint32_t key)
{
kcm_cursor **p;
krb5_error_code ret;
KCM_ASSERT_VALID(ccache);
if (key == 0)
return KRB5_CC_NOTFOUND;
ret = KRB5_CC_END;
HEIMDAL_MUTEX_lock(&ccache->mutex);
for (p = &ccache->cursors; *p != NULL; p = &(*p)->next) {
if ((*p)->key == key) {
if ((*p)->pid != pid)
ret = KRB5_FCC_PERM;
else
ret = 0;
break;
}
}
if (ret == 0) {
kcm_cursor *x = *p;
*p = x->next;
free(x);
}
HEIMDAL_MUTEX_unlock(&ccache->mutex);
return ret;
}
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