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/** BEGIN COPYRIGHT BLOCK
* 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; version 2 of the License.
*
* 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, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/*
* plugin_acl.c - routines for calling access control plugins
*/
#include "slap.h"
static int
acl_default_access ( Slapi_PBlock *pb , Slapi_Entry *e, int access)
{
int isRoot, rootdse, accessCheckDisabled;
int rc;
slapi_pblock_get ( pb, SLAPI_REQUESTOR_ISROOT, &isRoot);
if ( isRoot ) return LDAP_SUCCESS;
rc = slapi_pblock_get ( pb, SLAPI_PLUGIN_DB_NO_ACL, &accessCheckDisabled );
if ( rc != -1 && accessCheckDisabled ) return LDAP_SUCCESS;
rootdse = slapi_is_rootdse ( slapi_entry_get_ndn ( e ) );
if ( rootdse && (access & (SLAPI_ACL_READ | SLAPI_ACL_SEARCH) ) )
return LDAP_SUCCESS;
return LDAP_INSUFFICIENT_ACCESS;
}
int
plugin_call_acl_plugin ( Slapi_PBlock *pb, Slapi_Entry *e, char **attrs,
struct berval *val, int access , int flags, char **errbuf)
{
struct slapdplugin *p;
int rc = LDAP_INSUFFICIENT_ACCESS;
int aclplugin_initialized = 0;
Operation *operation;
slapi_pblock_get (pb, SLAPI_OPERATION, &operation);
/* we don't perform acl check for internal operations and if the plugin has set it not to be checked */
if (operation_is_flag_set(operation, SLAPI_OP_FLAG_NO_ACCESS_CHECK|OP_FLAG_INTERNAL|OP_FLAG_REPLICATED|OP_FLAG_LEGACY_REPLICATION_DN))
return LDAP_SUCCESS;
/* call the global plugins first and then the backend specific */
for ( p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next ) {
if (plugin_invoke_plugin_sdn (p, SLAPI_PLUGIN_ACL_ALLOW_ACCESS, pb,
(Slapi_DN*)slapi_entry_get_sdn_const (e))){
aclplugin_initialized = 1;
rc = (*p->plg_acl_access_allowed)(pb, e, attrs, val, access, flags, errbuf);
if ( rc != LDAP_SUCCESS ) break;
}
}
if (! aclplugin_initialized ) {
rc = acl_default_access ( pb, e, access);
}
return rc;
}
int
plugin_call_acl_mods_access ( Slapi_PBlock *pb, Slapi_Entry *e, LDAPMod **mods, char **errbuf )
{
struct slapdplugin *p;
int aclplugin_initialized = 0;
int rc = LDAP_INSUFFICIENT_ACCESS;
Operation *operation;
slapi_pblock_get (pb, SLAPI_OPERATION, &operation);
/* we don't perform acl check for internal operations and if the plugin has set it not to be checked */
if (operation_is_flag_set(operation, SLAPI_OP_FLAG_NO_ACCESS_CHECK|OP_FLAG_INTERNAL|OP_FLAG_REPLICATED|OP_FLAG_LEGACY_REPLICATION_DN))
return LDAP_SUCCESS;
/* call the global plugins first and then the backend specific */
for ( p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next ) {
if (plugin_invoke_plugin_sdn (p, SLAPI_PLUGIN_ACL_MODS_ALLOWED, pb,
(Slapi_DN*)slapi_entry_get_sdn_const (e))){
aclplugin_initialized = 1;
rc = (*p->plg_acl_mods_allowed)( pb, e, mods, errbuf );
if ( rc != LDAP_SUCCESS ) break;
}
}
if (! aclplugin_initialized ) {
rc = acl_default_access ( pb, e, SLAPI_ACL_WRITE);
}
return rc;
}
/* This plugin should be called immediatly after the changes have been comitted */
/* This function is now fully executed for internal and replicated ops. */
int
plugin_call_acl_mods_update ( Slapi_PBlock *pb, int optype )
{
struct slapdplugin *p;
char *dn;
int rc = 0;
void *change = NULL;
Slapi_Entry *te = NULL;
Slapi_DN sdn;
Operation *operation;
slapi_pblock_get (pb, SLAPI_OPERATION, &operation);
(void)slapi_pblock_get( pb, SLAPI_TARGET_DN, &dn );
switch ( optype ) {
case SLAPI_OPERATION_MODIFY:
(void)slapi_pblock_get( pb, SLAPI_MODIFY_MODS, &change );
break;
case SLAPI_OPERATION_ADD:
(void)slapi_pblock_get( pb, SLAPI_ADD_ENTRY, &change );
te = (Slapi_Entry *)change;
if(!slapi_sdn_isempty(slapi_entry_get_sdn(te)))
{
dn= (char*)slapi_sdn_get_ndn(slapi_entry_get_sdn(te)); /* jcm - Had to cast away const */
}
break;
case SLAPI_OPERATION_MODRDN:
(void)slapi_pblock_get( pb, SLAPI_MODRDN_NEWRDN, &change );
break;
}
slapi_sdn_init_dn_byref (&sdn, dn);
/* call the global plugins first and then the backend specific */
for ( p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next ) {
if (plugin_invoke_plugin_sdn (p, SLAPI_PLUGIN_ACL_MODS_UPDATE, pb, &sdn)){
rc = (*p->plg_acl_mods_update)(pb, optype, dn, change );
if ( rc != LDAP_SUCCESS ) break;
}
}
slapi_sdn_done (&sdn);
return rc;
}
int
plugin_call_acl_verify_syntax ( Slapi_PBlock *pb, Slapi_Entry *e, char **errbuf )
{
struct slapdplugin *p;
int rc = 0;
int plugin_called = 0;
Operation *operation;
slapi_pblock_get (pb, SLAPI_OPERATION, &operation);
/* we don't perform acl check for internal operations and if the plugin has set it not to be checked */
if (operation_is_flag_set(operation, SLAPI_OP_FLAG_NO_ACCESS_CHECK|OP_FLAG_INTERNAL|OP_FLAG_REPLICATED|OP_FLAG_LEGACY_REPLICATION_DN))
return LDAP_SUCCESS;
/* call the global plugins first and then the backend specific */
for ( p = get_plugin_list(PLUGIN_LIST_ACL); p != NULL; p = p->plg_next ) {
if (plugin_invoke_plugin_sdn (p, SLAPI_PLUGIN_ACL_SYNTAX_CHECK, pb,
(Slapi_DN*)slapi_entry_get_sdn_const (e))){
plugin_called = 1;
rc = (*p->plg_acl_syntax_check)( e, errbuf );
if ( rc != LDAP_SUCCESS ) break;
}
}
if ( !plugin_called ) {
LDAPDebug ( LDAP_DEBUG_ANY, "The ACL plugin is not initialized. The aci syntax cannot be verified\n",0,0,0);
}
return rc;
}
int slapi_access_allowed( Slapi_PBlock *pb, Slapi_Entry *e, char *attr,
struct berval *val, int access )
{
char *attrs[2] = { NULL, NULL };
attrs[0] = attr;
return ( plugin_call_acl_plugin ( pb, e, attrs, val, access, ACLPLUGIN_ACCESS_DEFAULT, NULL ) );
}
int slapi_acl_check_mods( Slapi_PBlock *pb, Slapi_Entry *e, LDAPMod **mods, char **errbuf )
{
return ( plugin_call_acl_mods_access ( pb, e, mods, errbuf ) );
}
int slapi_acl_verify_aci_syntax (Slapi_PBlock *pb, Slapi_Entry *e, char **errbuf)
{
return ( plugin_call_acl_verify_syntax ( pb, e, errbuf ) );
}
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