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/*
SSSD
System Database
Copyright (C) Simo Sorce <ssorce@redhat.com> 2008
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 "util/util.h"
#include "db/sysdb_private.h"
#include "confdb/confdb.h"
#include <time.h>
/************************************************
* Initialiazation stuff
*/
static int sysdb_read_var(TALLOC_CTX *mem_ctx,
struct confdb_ctx *cdb,
const char *name,
const char *def_value,
char **target)
{
int ret;
char **values;
ret = confdb_get_param(cdb, mem_ctx,
SYSDB_CONF_SECTION,
name, &values);
if (ret != EOK)
return ret;
if (values[0])
*target = values[0];
else
*target = talloc_strdup(mem_ctx, def_value);
return EOK;
}
static int sysdb_get_db_path(TALLOC_CTX *mem_ctx,
struct confdb_ctx *cdb,
char **db_path)
{
TALLOC_CTX *tmp_ctx;
char *default_ldb_path;
char *path;
int ret;
tmp_ctx = talloc_new(mem_ctx);
if (!tmp_ctx)
return ENOMEM;
default_ldb_path = talloc_asprintf(tmp_ctx, "%s/%s", DB_PATH, SYSDB_FILE);
if (default_ldb_path == NULL) {
ret = ENOMEM;
goto done;
}
sysdb_read_var(tmp_ctx, cdb, "ldbFile",
default_ldb_path, &path);
*db_path = talloc_steal(mem_ctx, path);
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
static int sysdb_check_init(struct sysdb_ctx *ctx)
{
TALLOC_CTX *tmp_ctx;
const char *base_ldif;
struct ldb_ldif *ldif;
struct ldb_message_element *el;
struct ldb_result *res;
struct ldb_dn *verdn;
char *version = NULL;
int ret;
tmp_ctx = talloc_new(ctx);
if (!tmp_ctx)
return ENOMEM;
verdn = ldb_dn_new(tmp_ctx, ctx->ldb, "cn=sysdb");
if (!verdn) {
ret = EIO;
goto done;
}
ret = ldb_search(ctx->ldb, tmp_ctx, &res,
verdn, LDB_SCOPE_BASE,
NULL, NULL);
if (ret != LDB_SUCCESS) {
ret = EIO;
goto done;
}
if (res->count > 1) {
ret = EIO;
goto done;
}
if (res->count == 1) {
el = ldb_msg_find_element(res->msgs[0], "version");
if (el) {
if (el->num_values != 1) {
ret = EINVAL;
goto done;
}
version = talloc_strndup(tmp_ctx,
(char *)(el->values[0].data),
el->values[0].length);
if (!version) {
ret = ENOMEM;
goto done;
}
if (strcmp(version, SYSDB_VERSION) == 0) {
/* all fine, return */
ret = EOK;
goto done;
}
}
DEBUG(0,("Unknown DB version [%s], expected [%s], aborting!\n",
version?version:"not found", SYSDB_VERSION));
ret = EINVAL;
goto done;
}
/* cn=sysdb does not exists, means db is empty, populate */
base_ldif = SYSDB_BASE_LDIF;
while ((ldif = ldb_ldif_read_string(ctx->ldb, &base_ldif))) {
ret = ldb_add(ctx->ldb, ldif->msg);
if (ret != LDB_SUCCESS) {
DEBUG(0, ("Failed to inizialiaze DB (%d,[%s]), aborting!\n",
ret, ldb_errstring(ctx->ldb)));
ret = EIO;
goto done;
}
ldb_ldif_read_free(ctx->ldb, ldif);
}
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
int sysdb_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct confdb_ctx *cdb,
const char *alt_db_path,
struct sysdb_ctx **_ctx)
{
struct sysdb_ctx *ctx;
int ret;
if (!ev) return EINVAL;
ctx = talloc_zero(mem_ctx, struct sysdb_ctx);
if (!ctx) {
return ENOMEM;
}
ctx->ev = ev;
if (!alt_db_path) {
ret = sysdb_get_db_path(ctx, cdb, &ctx->ldb_file);
if (ret != EOK) {
return ret;
}
} else {
ctx->ldb_file = talloc_strdup(ctx, alt_db_path);
}
if (ctx->ldb_file == NULL) {
return ENOMEM;
}
DEBUG(3, ("DB Path is: %s\n", ctx->ldb_file));
ctx->ldb = ldb_init(ctx, ev);
if (!ctx->ldb) {
talloc_free(ctx);
return EIO;
}
ret = ldb_connect(ctx->ldb, ctx->ldb_file, 0, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(ctx);
return EIO;
}
ret = sysdb_check_init(ctx);
if (ret != EOK) {
talloc_free(ctx);
return ret;
}
*_ctx = ctx;
return EOK;
}
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