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/*
ldb database library - ldif handlers for Samba
Copyright (C) Andrew Tridgell 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
*/
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_private.h"
#include "librpc/gen_ndr/ndr_security.h"
/*
convert a ldif formatted objectSid to a NDR formatted blob
*/
static int ldif_read_objectSid(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
struct dom_sid *sid;
NTSTATUS status;
sid = dom_sid_parse_talloc(mem_ctx, in->data);
if (sid == NULL) {
return -1;
}
status = ndr_push_struct_blob(out, mem_ctx, sid,
(ndr_push_flags_fn_t)ndr_push_dom_sid);
talloc_free(sid);
if (!NT_STATUS_IS_OK(status)) {
return -1;
}
return 0;
}
/*
convert a NDR formatted blob to a ldif formatted objectSid
*/
static int ldif_write_objectSid(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
struct dom_sid *sid;
NTSTATUS status;
sid = talloc(mem_ctx, struct dom_sid);
if (sid == NULL) {
return -1;
}
status = ndr_pull_struct_blob(in, sid, sid,
(ndr_pull_flags_fn_t)ndr_pull_dom_sid);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(sid);
return -1;
}
out->data = dom_sid_string(mem_ctx, sid);
talloc_free(sid);
if (out->data == NULL) {
return -1;
}
out->length = strlen(out->data);
return 0;
}
/*
compare two objectSids
*/
static int ldb_comparison_objectSid(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *v1, const struct ldb_val *v2)
{
if (strncmp(v1->data, "S-", 2) == 0 &&
strncmp(v2->data, "S-", 2) == 0) {
return strcmp(v1->data, v2->data);
}
if (strncmp(v1->data, "S-", 2) == 0) {
struct ldb_val v;
int ret;
if (ldif_read_objectSid(ldb, mem_ctx, v1, &v) != 0) {
return -1;
}
ret = ldb_comparison_binary(ldb, mem_ctx, &v, v2);
talloc_free(v.data);
return ret;
}
return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
}
/*
canonicalise a objectSid
*/
static int ldb_canonicalise_objectSid(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
if (strncmp(in->data, "S-", 2) == 0) {
return ldif_read_objectSid(ldb, mem_ctx, in, out);
}
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
static const struct ldb_attrib_handler samba_handlers[] = {
{
.attr = "objectSid",
.flags = 0,
.ldif_read_fn = ldif_read_objectSid,
.ldif_write_fn = ldif_write_objectSid,
.canonicalise_fn = ldb_canonicalise_objectSid,
.comparison_fn = ldb_comparison_objectSid
}
};
/*
register the samba ldif handlers
*/
int ldb_register_samba_handlers(struct ldb_context *ldb)
{
return ldb_set_attrib_handlers(ldb, samba_handlers, ARRAY_SIZE(samba_handlers));
}
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