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/*
Authors:
Jakub Hrozek <jhrozek@redhat.com>
Copyright (C) 2011 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <talloc.h>
#include "db/sysdb.h"
#include "db/sysdb_sudo.h"
#include "providers/ldap/sdap_sudo_cache.h"
/* ========== Functions specific for the native sudo LDAP schema ========== */
static errno_t sdap_sudo_get_usn(TALLOC_CTX *mem_ctx,
struct sysdb_attrs *attrs,
struct sdap_attr_map *map,
const char *name,
char **_usn)
{
const char *usn;
errno_t ret;
if (_usn == NULL) {
return EINVAL;
}
ret = sysdb_attrs_get_string(attrs, map[SDAP_AT_SUDO_USN].sys_name, &usn);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_MINOR_FAILURE,
("Failed to retrieve USN value: [%s]\n", strerror(ret)));
return ret;
}
*_usn = talloc_strdup(mem_ctx, usn);
if (*_usn == NULL) {
return ENOMEM;
}
return EOK;
}
static errno_t
sdap_save_native_sudorule(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb_ctx,
struct sss_domain_info *domain,
struct sdap_attr_map *map,
struct sysdb_attrs *attrs,
int cache_timeout,
time_t now,
char **_usn)
{
errno_t ret;
const char *rule_name;
ret = sysdb_attrs_get_string(attrs, map[SDAP_AT_SUDO_NAME].sys_name,
&rule_name);
if (ret == ERANGE) {
DEBUG(SSSDBG_OP_FAILURE, ("Warning: found rule that contains none "
"or multiple CN values. It will be skipped.\n"));
return ret;
} else if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("Could not get rule name [%d]: %s\n",
ret, strerror(ret)));
return ret;
}
ret = sysdb_attrs_add_time_t(attrs, SYSDB_CACHE_EXPIRE,
(cache_timeout ? (now + cache_timeout) : 0));
if (ret) {
DEBUG(SSSDBG_OP_FAILURE, ("Could not set sysdb cache expire [%d]: %s\n",
ret, strerror(ret)));
return ret;
}
ret = sdap_sudo_get_usn(mem_ctx, attrs, map, rule_name, _usn);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE, ("Could not read USN from %s\n", rule_name));
return ret;
}
ret = sysdb_save_sudorule(sysdb_ctx, domain, rule_name, attrs);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("Could not save sudorule %s\n", rule_name));
return ret;
}
return ret;
}
errno_t
sdap_save_native_sudorule_list(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb_ctx,
struct sss_domain_info *domain,
struct sdap_attr_map *map,
struct sysdb_attrs **replies,
size_t replies_count,
int cache_timeout,
time_t now,
char **_usn)
{
TALLOC_CTX *tmp_ctx = NULL;
char *higher_usn = NULL;
char *usn_value = NULL;
errno_t ret, tret;
bool in_transaction = false;
size_t i;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
DEBUG(SSSDBG_FATAL_FAILURE, ("talloc_new() failed\n"));
return ENOMEM;
}
ret = sysdb_transaction_start(sysdb_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not start transaction\n"));
goto fail;
}
in_transaction = true;
for (i=0; i<replies_count; i++) {
usn_value = NULL;
ret = sdap_save_native_sudorule(tmp_ctx, sysdb_ctx,
domain, map, replies[i],
cache_timeout, now, &usn_value);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Failed to save sudo rule, "
"will continue with next...\n"));
continue;
}
/* find highest usn */
if (usn_value) {
if (higher_usn) {
if ((strlen(usn_value) > strlen(higher_usn)) ||
(strcmp(usn_value, higher_usn) > 0)) {
talloc_zfree(higher_usn);
higher_usn = usn_value;
} else {
talloc_zfree(usn_value);
}
} else {
higher_usn = usn_value;
}
}
}
ret = sysdb_transaction_commit(sysdb_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Failed to commit transaction\n"));
goto fail;
}
in_transaction = false;
if (higher_usn != NULL) {
*_usn = talloc_steal(mem_ctx, higher_usn);
}
ret = EOK;
fail:
if (in_transaction) {
tret = sysdb_transaction_cancel(sysdb_ctx);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not cancel transaction\n"));
}
}
talloc_free(tmp_ctx);
return ret;
}
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