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/*
Authors:
Jan Cholasta <jcholast@redhat.com>
Copyright (C) 2012 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_ssh.h"
#include "db/sysdb_private.h"
errno_t
sysdb_store_ssh_host(struct sysdb_ctx *sysdb,
const char *name,
const char *alias,
struct sysdb_attrs *attrs)
{
TALLOC_CTX *tmp_ctx;
errno_t ret;
errno_t sret;
struct ldb_message **hosts;
size_t num_hosts;
struct ldb_message_element *el;
unsigned int i;
const char *search_attrs[] = { SYSDB_NAME_ALIAS, NULL };
bool in_transaction = false;
DEBUG(SSSDBG_TRACE_FUNC, ("Adding host %s\n", name));
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
return ENOMEM;
}
if (!attrs) {
attrs = sysdb_new_attrs(tmp_ctx);
if (!attrs) {
ret = ENOMEM;
goto done;
}
}
ret = sysdb_transaction_start(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Failed to start transaction\n"));
goto done;
}
in_transaction = true;
ret = sysdb_search_ssh_hosts(tmp_ctx, sysdb, name, search_attrs,
&hosts, &num_hosts);
if (ret != EOK && ret != ENOENT) {
goto done;
}
if (num_hosts > 1) {
ret = EINVAL;
DEBUG(SSSDBG_CRIT_FAILURE,
("Found more than one host with name [%s].\n", name));
goto done;
}
ret = sysdb_delete_ssh_host(sysdb, name);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE,
("Failed to delete host [%s].\n", name));
goto done;
}
if (num_hosts == 1) {
el = ldb_msg_find_element(hosts[0], SYSDB_NAME_ALIAS);
if (el) {
for (i = 0; i < el->num_values; i++) {
if (alias && strcmp((char *)el->values[i].data, alias) == 0) {
alias = NULL;
}
ret = sysdb_attrs_add_val(attrs,
SYSDB_NAME_ALIAS, &el->values[i]);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
("Could not add name alias [%s]\n",
el->values[i].data));
goto done;
}
}
}
}
if (alias) {
ret = sysdb_attrs_add_string(attrs, SYSDB_NAME_ALIAS, alias);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
("Could not add name alias [%s]\n", alias));
goto done;
}
}
ret = sysdb_store_custom(sysdb, name, SSH_HOSTS_SUBDIR, attrs);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_store_custom failed [%d]: %s\n",
ret, strerror(ret)));
goto done;
}
ret = sysdb_transaction_commit(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Failed to commit transaction\n"));
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
sret = sysdb_transaction_cancel(sysdb);
if (sret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not cancel transaction\n"));
}
}
talloc_free(tmp_ctx);
return ret;
}
errno_t
sysdb_delete_ssh_host(struct sysdb_ctx *sysdb,
const char *name)
{
DEBUG(SSSDBG_TRACE_FUNC, ("Deleting host %s\n", name));
return sysdb_delete_custom(sysdb, name, SSH_HOSTS_SUBDIR);
}
errno_t
sysdb_search_ssh_hosts(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
const char *name,
const char **attrs,
struct ldb_message ***hosts,
size_t *host_count)
{
errno_t ret;
TALLOC_CTX *tmp_ctx;
const char *filter;
size_t count;
struct ldb_message **msgs;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
filter = talloc_asprintf(tmp_ctx, "(%s=%s)", SYSDB_NAME, name);
if (!filter) {
ret = ENOMEM;
goto done;
}
ret = sysdb_search_custom(tmp_ctx, sysdb, filter, SSH_HOSTS_SUBDIR, attrs,
&count, &msgs);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE,
("Error looking up host [%s]", name));
goto done;
} if (ret == ENOENT) {
DEBUG(SSSDBG_TRACE_FUNC, ("No such host\n"));
*hosts = NULL;
*host_count = 0;
goto done;
}
*hosts = talloc_steal(mem_ctx, msgs);
*host_count = count;
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
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