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/*
ldb database library
Copyright (C) Simo Sorce 2005
** 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_controls.c
*
* Component: ldb controls utility functions
*
* Description: helper functions for control modules
*
* Author: Simo Sorce
*/
#include "includes.h"
#include "ldb/include/includes.h"
/* check if a control with the specified "oid" exist and return it */
/* returns NULL if not found */
struct ldb_control *get_control_from_list(struct ldb_control **controls, const char *oid)
{
int i;
/* check if there's a paged request control */
if (controls != NULL) {
for (i = 0; controls[i]; i++) {
if (strcmp(oid, controls[i]->oid) == 0) {
break;
}
}
return controls[i];
}
return NULL;
}
/* saves the current controls list into the "saver" and replace the one in req with a new one excluding
the "exclude" control */
/* returns False on error */
int save_controls(struct ldb_control *exclude, struct ldb_request *req, struct ldb_control ***saver)
{
struct ldb_control **lcs;
int i, j;
*saver = req->controls;
for (i = 0; req->controls[i]; i++);
if (i == 1) {
req->controls = NULL;
return 1;
}
lcs = talloc_array(req, struct ldb_control *, i);
if (!lcs) {
return 0;
}
for (i = 0, j = 0; (*saver)[i]; i++) {
if (exclude == (*saver)[i]) continue;
lcs[j] = (*saver)[i];
j++;
}
lcs[j] = NULL;
req->controls = lcs;
return 1;
}
/* check if there's any control marked as critical in the list */
/* return True if any, False if none */
int check_critical_controls(struct ldb_control **controls)
{
int i;
if (controls == NULL) {
return 0;
}
for (i = 0; controls[i]; i++) {
if (controls[i]->critical) {
return 1;
}
}
return 0;
}
int ldb_request_add_control(struct ldb_request *req, const char *oid, bool critical, void *data)
{
unsigned n;
struct ldb_control **ctrls;
struct ldb_control *ctrl;
for (n=0; req->controls && req->controls[n];) { n++; }
ctrls = talloc_realloc(req, req->controls,
struct ldb_control *,
n + 2);
if (!ctrls) return LDB_ERR_OPERATIONS_ERROR;
req->controls = ctrls;
ctrls[n] = NULL;
ctrls[n+1] = NULL;
ctrl = talloc(ctrls, struct ldb_control);
if (!ctrl) return LDB_ERR_OPERATIONS_ERROR;
ctrl->oid = talloc_strdup(ctrl, oid);
if (!ctrl->oid) return LDB_ERR_OPERATIONS_ERROR;
ctrl->critical = critical;
ctrl->data = data;
ctrls[n] = ctrl;
return LDB_SUCCESS;
}
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