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/*
Unix SMB/CIFS mplementation.
implement possibleInferiors calculation
Copyright (C) Andrew Tridgell 2009
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009
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/>.
*/
/*
This module is a C implementation of the logic in the
dsdb/samdb/ldb_modules/tests/possibleInferiors.py code
To understand the C code, please see the python code first
*/
#include "includes.h"
#include "dsdb/samdb/samdb.h"
/*
create the SUPCLASSES() list
*/
static char **schema_supclasses(struct dsdb_schema *schema, struct dsdb_class *schema_class)
{
char **list;
if (schema_class->supclasses) {
return schema_class->supclasses;
}
list = str_list_make(schema_class, NULL, NULL);
if (list == NULL) {
DEBUG(0,(__location__ " out of memory\n"));
return NULL;
}
/* Cope with 'top SUP top', ie top is subClassOf top */
if (strcmp(schema_class->lDAPDisplayName, schema_class->subClassOf) == 0) {
schema_class->supclasses = list;
return list;
}
if (schema_class->subClassOf) {
const char **list2;
list = str_list_add_const(list, schema_class->subClassOf);
list2 = schema_supclasses(schema,
discard_const_p(struct dsdb_class,
dsdb_class_by_lDAPDisplayName(schema,
schema_class->subClassOf)));
list = str_list_append_const(list, list2);
}
schema_class->supclasses = str_list_unique(list);
return list;
}
/*
this one is used internally
matches SUBCLASSES() python function
*/
static char **schema_subclasses(struct dsdb_schema *schema, TALLOC_CTX *mem_ctx, char **oclist)
{
char **list = str_list_make(mem_ctx, NULL, NULL);
int i;
for (i=0; oclist && oclist[i]; i++) {
struct dsdb_class *schema_class = dsdb_class_by_lDAPDisplayName(schema, oclist[i]);
list = str_list_append_const(list, schema_class->subclasses);
}
return list;
}
/*
equivalent of the POSSSUPERIORS() python function
*/
static char **schema_posssuperiors(struct dsdb_schema *schema,
struct dsdb_class *schema_class)
{
if (schema_class->posssuperiors == NULL) {
char **list2 = str_list_make(schema_class, NULL, NULL);
char **list3;
int i;
list2 = str_list_append_const(list2, schema_class->systemPossSuperiors);
list2 = str_list_append_const(list2, schema_class->possSuperiors);
list3 = schema_supclasses(schema, schema_class);
for (i=0; list3 && list3[i]; i++) {
struct dsdb_class *class2 = dsdb_class_by_lDAPDisplayName(schema, list3[i]);
list2 = str_list_append_const(list2, schema_posssuperiors(schema, class2));
}
list2 = str_list_append_const(list2, schema_subclasses(schema, list2, list2));
schema_class->posssuperiors = str_list_unique(list2);
}
return schema_class->posssuperiors;
}
static char **schema_subclasses_recurse(struct dsdb_schema *schema, struct dsdb_class *schema_class)
{
char **list = str_list_copy_const(schema_class, schema_class->subclasses_direct);
int i;
for (i=0;list && list[i]; i++) {
struct dsdb_class *schema_class2 = dsdb_class_by_lDAPDisplayName(schema, list[i]);
if (schema_class != schema_class2) {
list = str_list_append_const(list, schema_subclasses_recurse(schema, schema_class2));
}
}
return list;
}
static void schema_create_subclasses(struct dsdb_schema *schema)
{
struct dsdb_class *schema_class;
for (schema_class=schema->classes; schema_class; schema_class=schema_class->next) {
struct dsdb_class *schema_class2 = dsdb_class_by_lDAPDisplayName(schema, schema_class->subClassOf);
if (schema_class != schema_class2) {
if (schema_class2->subclasses_direct == NULL) {
schema_class2->subclasses_direct = str_list_make(schema_class2, NULL, NULL);
}
schema_class2->subclasses_direct = str_list_add_const(schema_class2->subclasses_direct,
schema_class->lDAPDisplayName);
}
}
for (schema_class=schema->classes; schema_class; schema_class=schema_class->next) {
schema_class->subclasses = str_list_unique(schema_subclasses_recurse(schema, schema_class));
}
}
static void schema_fill_possible_inferiors(struct dsdb_schema *schema, struct dsdb_class *schema_class)
{
struct dsdb_class *c2;
for (c2=schema->classes; c2; c2=c2->next) {
char **superiors = schema_posssuperiors(schema, c2);
if (c2->systemOnly == false
&& c2->objectClassCategory != 2
&& c2->objectClassCategory != 3
&& str_list_check(superiors, schema_class->lDAPDisplayName)) {
if (schema_class->possibleInferiors == NULL) {
schema_class->possibleInferiors = str_list_make(schema_class, NULL, NULL);
}
schema_class->possibleInferiors = str_list_add_const(schema_class->possibleInferiors,
c2->lDAPDisplayName);
}
}
schema_class->possibleInferiors = str_list_unique(schema_class->possibleInferiors);
}
void schema_fill_constructed(struct dsdb_schema *schema)
{
struct dsdb_class *schema_class;
schema_create_subclasses(schema);
for (schema_class=schema->classes; schema_class; schema_class=schema_class->next) {
schema_fill_possible_inferiors(schema, schema_class);
}
/* free up our internal cache elements */
for (schema_class=schema->classes; schema_class; schema_class=schema_class->next) {
talloc_free(schema_class->supclasses);
talloc_free(schema_class->subclasses_direct);
talloc_free(schema_class->subclasses);
talloc_free(schema_class->posssuperiors);
schema_class->supclasses = NULL;
schema_class->subclasses_direct = NULL;
schema_class->subclasses = NULL;
schema_class->posssuperiors = NULL;
}
}
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