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/*
ldb database library
Copyright (C) Simo Sorce 2004
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Name: ldb
*
* Component: ldb timestamps module
*
* Description: add object timestamping functionality
*
* Author: Simo Sorce
*/
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_private.h"
#include <time.h>
static int timestamps_search_bytree(struct ldb_module *module, const struct ldb_dn *base,
enum ldb_scope scope, struct ldb_parse_tree *tree,
const char * const *attrs, struct ldb_message ***res)
{
ldb_debug(module->ldb, LDB_DEBUG_TRACE, "timestamps_search\n");
return ldb_next_search_bytree(module, base, scope, tree, attrs, res);
}
static int add_time_element(struct ldb_module *module, struct ldb_message *msg,
const char *attr_name, const char *time_string, unsigned int flags)
{
struct ldb_message_element *attribute = NULL;
int i;
for (i = 0; i < msg->num_elements; i++) {
if (ldb_attr_cmp(msg->elements[i].name, attr_name) == 0) {
return 0;
}
}
if (ldb_msg_add_string(msg, attr_name, time_string) != 0) {
return -1;
}
for (i = 0; i < msg->num_elements; i++) {
if (ldb_attr_cmp(attr_name, msg->elements[i].name) == 0) {
attribute = &msg->elements[i];
break;
}
}
if (!attribute) {
return -1;
}
attribute->flags = flags;
return 0;
}
/* add_record: add crateTimestamp/modifyTimestamp attributes */
static int timestamps_add_record(struct ldb_module *module, const struct ldb_message *msg)
{
struct ldb_message *msg2 = NULL;
struct tm *tm;
char *timestr;
time_t timeval;
int ret, i;
ldb_debug(module->ldb, LDB_DEBUG_TRACE, "timestamps_add_record\n");
/* do not manipulate our control entries */
if (ldb_dn_is_special(msg->dn)) {
return ldb_next_add_record(module, msg);
}
timeval = time(NULL);
tm = gmtime(&timeval);
if (!tm) {
return -1;
}
msg2 = talloc(module, struct ldb_message);
if (!msg2) {
return -1;
}
/* formatted like: 20040408072012.0Z */
timestr = talloc_asprintf(msg2, "%04u%02u%02u%02u%02u%02u.0Z",
tm->tm_year+1900, tm->tm_mon+1,
tm->tm_mday, tm->tm_hour, tm->tm_min,
tm->tm_sec);
if (!timestr) {
return -1;
}
msg2->dn = msg->dn;
msg2->num_elements = msg->num_elements;
msg2->private_data = msg->private_data;
msg2->elements = talloc_array(msg2, struct ldb_message_element, msg2->num_elements);
for (i = 0; i < msg2->num_elements; i++) {
msg2->elements[i] = msg->elements[i];
}
add_time_element(module, msg2, "createTimestamp", timestr, LDB_FLAG_MOD_ADD);
add_time_element(module, msg2, "modifyTimestamp", timestr, LDB_FLAG_MOD_ADD);
add_time_element(module, msg2, "whenCreated", timestr, LDB_FLAG_MOD_ADD);
add_time_element(module, msg2, "whenChanged", timestr, LDB_FLAG_MOD_ADD);
if (msg2) {
ret = ldb_next_add_record(module, msg2);
talloc_free(msg2);
} else {
ret = ldb_next_add_record(module, msg);
}
return ret;
}
/* modify_record: change modifyTimestamp as well */
static int timestamps_modify_record(struct ldb_module *module, const struct ldb_message *msg)
{
struct ldb_message *msg2 = NULL;
struct tm *tm;
char *timestr;
time_t timeval;
int ret, i;
ldb_debug(module->ldb, LDB_DEBUG_TRACE, "timestamps_modify_record\n");
/* do not manipulate our control entries */
if (ldb_dn_is_special(msg->dn)) {
return ldb_next_modify_record(module, msg);
}
timeval = time(NULL);
tm = gmtime(&timeval);
if (!tm) {
return -1;
}
msg2 = talloc(module, struct ldb_message);
if (!msg2) {
return -1;
}
/* formatted like: 20040408072012.0Z */
timestr = talloc_asprintf(msg2,
"%04u%02u%02u%02u%02u%02u.0Z",
tm->tm_year+1900, tm->tm_mon+1,
tm->tm_mday, tm->tm_hour, tm->tm_min,
tm->tm_sec);
if (!timestr) {
return -1;
}
msg2->dn = msg->dn;
msg2->num_elements = msg->num_elements;
msg2->private_data = msg->private_data;
msg2->elements = talloc_array(msg2, struct ldb_message_element, msg2->num_elements);
for (i = 0; i < msg2->num_elements; i++) {
msg2->elements[i] = msg->elements[i];
}
add_time_element(module, msg2, "modifyTimestamp", timestr, LDB_FLAG_MOD_REPLACE);
add_time_element(module, msg2, "whenChanged", timestr, LDB_FLAG_MOD_REPLACE);
ret = ldb_next_modify_record(module, msg2);
talloc_free(msg2);
return ret;
}
static const struct ldb_module_ops timestamps_ops = {
.name = "timestamps",
.search_bytree = timestamps_search_bytree,
.add_record = timestamps_add_record,
.modify_record = timestamps_modify_record
};
/* the init function */
#ifdef HAVE_DLOPEN_DISABLED
struct ldb_module *init_module(struct ldb_context *ldb, const char *options[])
#else
struct ldb_module *timestamps_module_init(struct ldb_context *ldb, const char *options[])
#endif
{
struct ldb_module *ctx;
ctx = talloc(ldb, struct ldb_module);
if (!ctx)
return NULL;
ctx->private_data = NULL;
ctx->ldb = ldb;
ctx->prev = ctx->next = NULL;
ctx->ops = ×tamps_ops;
return ctx;
}
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