/* modrdn.c - ldbm backend modrdn routine */
/* $OpenLDAP: pkg/ldap/servers/slapd/back-ldbm/modrdn.c,v 1.153.2.9 2007/01/02 21:44:03 kurt Exp $ */
/* This work is part of OpenLDAP Software .
*
* Copyright 1998-2007 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* .
*/
/* Portions Copyright 1999, Juan C. Gomez, All rights reserved.
* This software is not subject to any license of Silicon Graphics
* Inc. or Purdue University.
*
* Redistribution and use in source and binary forms are permitted
* without restriction or fee of any kind as long as this notice
* is preserved.
*/
#include "portable.h"
#include
#include
#include
#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
int
ldbm_back_modrdn(
Operation *op,
SlapReply *rs )
{
AttributeDescription *children = slap_schema.si_ad_children;
AttributeDescription *entry = slap_schema.si_ad_entry;
struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
struct berval p_dn, p_ndn;
struct berval new_dn = BER_BVNULL, new_ndn = BER_BVNULL;
struct berval old_ndn = BER_BVNULL;
Entry *e, *p = NULL;
Entry *matched;
/* LDAP v2 supporting correct attribute handling. */
LDAPRDN new_rdn = NULL;
LDAPRDN old_rdn = NULL;
int rc_id = 0;
ID id = NOID;
char textbuf[SLAP_TEXT_BUFLEN];
size_t textlen = sizeof textbuf;
/* Added to support newSuperior */
Entry *np = NULL; /* newSuperior Entry */
struct berval *np_ndn = NULL; /* newSuperior ndn */
struct berval *new_parent_dn = NULL; /* np_dn, p_dn, or NULL */
/* Used to interface with ldbm_modify_internal() */
Modifications *mod = NULL; /* Used to delete old/add new rdn */
int manageDSAit = get_manageDSAit( op );
Debug( LDAP_DEBUG_TRACE,
"==>ldbm_back_modrdn: dn: %s newSuperior=%s\n",
op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "NULL",
( op->oq_modrdn.rs_newSup && op->oq_modrdn.rs_newSup->bv_len )
? op->oq_modrdn.rs_newSup->bv_val : "NULL", 0 );
/* grab giant lock for writing */
ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
e = dn2entry_w( op->o_bd, &op->o_req_ndn, &matched );
/* get entry with writer lock */
/* FIXME: dn2entry() should return non-glue entry */
if (( e == NULL ) || ( !manageDSAit && e && is_entry_glue( e ))) {
if ( matched != NULL ) {
rs->sr_matched = strdup( matched->e_dn );
rs->sr_ref = is_entry_referral( matched )
? get_entry_referrals( op, matched )
: NULL;
cache_return_entry_r( &li->li_cache, matched );
} else {
rs->sr_ref = referral_rewrite( default_referral, NULL,
&op->o_req_dn, LDAP_SCOPE_DEFAULT );
}
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
free( (char *)rs->sr_matched );
rs->sr_ref = NULL;
rs->sr_matched = NULL;
return rs->sr_err;
}
/* check entry for "entry" acl */
if ( ! access_allowed( op, e, entry, NULL, ACL_WRITE, NULL ) )
{
Debug( LDAP_DEBUG_TRACE,
"<=- ldbm_back_modrdn: no write access to entry\n", 0,
0, 0 );
send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
"no write access to entry" );
goto return_results;
}
if (!manageDSAit && is_entry_referral( e ) ) {
/* parent is a referral, don't allow add */
/* parent is an alias, don't allow add */
rs->sr_ref = get_entry_referrals( op, e );
Debug( LDAP_DEBUG_TRACE, "entry %s is referral\n", e->e_dn,
0, 0 );
rs->sr_err = LDAP_REFERRAL;
rs->sr_matched = e->e_name.bv_val;
send_ldap_result( op, rs );
if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
rs->sr_matched = NULL;
goto return_results;
}
if ( has_children( op->o_bd, e ) ) {
Debug( LDAP_DEBUG_TRACE, "entry %s has children\n", e->e_dn,
0, 0 );
send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
"subtree rename not supported" );
goto return_results;
}
if ( be_issuffix( op->o_bd, &e->e_nname ) ) {
p_ndn = slap_empty_bv ;
} else {
dnParent( &e->e_nname, &p_ndn );
}
if ( p_ndn.bv_len != 0 ) {
/* Make sure parent entry exist and we can write its
* children.
*/
if( (p = dn2entry_w( op->o_bd, &p_ndn, NULL )) == NULL) {
Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
0, 0, 0);
send_ldap_error( op, rs, LDAP_OTHER,
"parent entry does not exist" );
goto return_results;
}
} else {
p = (Entry *)&slap_entry_root;
}
/* check parent for "children" acl */
rs->sr_err = access_allowed( op, p, children, NULL,
op->oq_modrdn.rs_newSup != NULL ?
ACL_WDEL : ACL_WRITE,
NULL );
if ( BER_BVISEMPTY( &p_ndn ))
p = NULL;
if ( !rs->sr_err )
{
Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
0, 0 );
send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
NULL );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: wr to children of entry %s OK\n",
p_ndn.bv_val, 0, 0 );
if ( p_ndn.bv_val == slap_empty_bv.bv_val ) {
p_dn = slap_empty_bv;
} else {
dnParent( &e->e_name, &p_dn );
}
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
p_dn.bv_val, 0, 0 );
new_parent_dn = &p_dn; /* New Parent unless newSuperior given */
if ( op->oq_modrdn.rs_newSup != NULL ) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: new parent \"%s\" requested...\n",
op->oq_modrdn.rs_newSup->bv_val, 0, 0 );
np_ndn = op->oq_modrdn.rs_nnewSup;
/* newSuperior == oldParent? */
if ( dn_match( &p_ndn, np_ndn ) ) {
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: "
"new parent\"%s\" seems to be the same as the "
"old parent \"%s\"\n",
op->oq_modrdn.rs_newSup->bv_val, p_dn.bv_val, 0 );
op->oq_modrdn.rs_newSup = NULL; /* ignore newSuperior */
}
}
if ( op->oq_modrdn.rs_newSup != NULL ) {
/* newSuperior == entry being moved?, if so ==> ERROR */
/* Get Entry with dn=newSuperior. Does newSuperior exist? */
if ( op->oq_modrdn.rs_nnewSup->bv_len ) {
if( (np = dn2entry_w( op->o_bd, np_ndn, NULL )) == NULL) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
np_ndn->bv_val, 0, 0);
send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT,
"newSuperior not found" );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: wr to new parent OK np=%p, id=%ld\n",
(void *) np, np->e_id, 0 );
/* check newSuperior for "children" acl */
if ( !access_allowed( op, np, children, NULL,
ACL_WADD, NULL ) )
{
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: no wr to newSup children\n",
0, 0, 0 );
send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS, NULL );
goto return_results;
}
if ( is_entry_alias( np ) ) {
/* parent is an alias, don't allow add */
Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 );
send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM,
"newSuperior is an alias" );
goto return_results;
}
if ( is_entry_referral( np ) ) {
/* parent is a referral, don't allow add */
Debug( LDAP_DEBUG_TRACE, "entry (%s) is referral\n",
np->e_dn, 0, 0 );
send_ldap_error( op, rs, LDAP_OTHER,
"newSuperior is a referral" );
goto return_results;
}
} else {
if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
|| be_shadow_update( op ) ) {
int can_access;
np = (Entry *)&slap_entry_root;
can_access = access_allowed( op, np,
children, NULL, ACL_WADD, NULL );
np = NULL;
/* check parent for "children" acl */
if ( ! can_access ) {
Debug( LDAP_DEBUG_TRACE,
"<=- ldbm_back_modrdn: no "
"access to new superior\n", 0, 0, 0 );
send_ldap_error( op, rs,
LDAP_INSUFFICIENT_ACCESS,
NULL );
goto return_results;
}
} else {
Debug( LDAP_DEBUG_TRACE,
"<=- ldbm_back_modrdn: \"\" "
"not allowed as new superior\n",
0, 0, 0);
send_ldap_error( op, rs,
LDAP_INSUFFICIENT_ACCESS,
NULL );
goto return_results;
}
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: wr to new parent's children OK\n",
0, 0, 0 );
new_parent_dn = op->oq_modrdn.rs_newSup;
}
/* Build target dn and make sure target entry doesn't exist already. */
build_new_dn( &new_dn, new_parent_dn, &op->oq_modrdn.rs_newrdn, NULL );
dnNormalize( 0, NULL, NULL, &new_dn, &new_ndn, NULL );
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
new_ndn.bv_val, 0, 0 );
/* check for abandon */
if ( op->o_abandon ) {
rs->sr_err = SLAPD_ABANDON;
goto return_results;
}
if ( ( rc_id = dn2id ( op->o_bd, &new_ndn, &id ) ) || id != NOID ) {
/* if (rc_id) something bad happened to ldbm cache */
rs->sr_err = rc_id ? LDAP_OTHER : LDAP_ALREADY_EXISTS;
send_ldap_result( op, rs );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: new ndn=%s does not exist\n",
new_ndn.bv_val, 0, 0 );
/* Get attribute type and attribute value of our new rdn, we will
* need to add that to our new entry
*/
if ( ldap_bv2rdn( &op->oq_modrdn.rs_newrdn, &new_rdn, (char **)&rs->sr_text,
LDAP_DN_FORMAT_LDAP ) )
{
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out "
"type(s)/values(s) of newrdn\n",
0, 0, 0 );
send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX,
"unknown type(s) used in RDN" );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: new_rdn_type=\"%s\", "
"new_rdn_val=\"%s\"\n",
new_rdn[ 0 ]->la_attr.bv_val,
new_rdn[ 0 ]->la_value.bv_val, 0 );
if ( op->oq_modrdn.rs_deleteoldrdn ) {
if ( ldap_bv2rdn( &op->o_req_dn, &old_rdn, (char **)&rs->sr_text,
LDAP_DN_FORMAT_LDAP ) )
{
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out "
"the old_rdn type(s)/value(s)\n",
0, 0, 0 );
send_ldap_error( op, rs, LDAP_OTHER,
"cannot parse RDN from old DN" );
goto return_results;
}
}
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
0, 0, 0 );
if ( slap_modrdn2mods( op, rs, e, old_rdn, new_rdn, &mod ) != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
goto return_results;
}
/* check for abandon */
if ( op->o_abandon ) {
rs->sr_err = SLAPD_ABANDON;
goto return_results;
}
(void) cache_delete_entry( &li->li_cache, e );
free( e->e_dn );
old_ndn = e->e_nname;
e->e_name = new_dn;
e->e_nname = new_ndn;
new_dn.bv_val = NULL;
new_ndn.bv_val = NULL;
/* NOTE: after this you must not free new_dn or new_ndn!
* They are used by cache.
*/
/* modify memory copy of entry */
rs->sr_err = ldbm_modify_internal( op, &mod[0], e,
&rs->sr_text, textbuf, textlen );
switch ( rs->sr_err ) {
case LDAP_SUCCESS:
break;
default:
send_ldap_result( op, rs );
/* FALLTHRU */
case SLAPD_ABANDON:
goto return_results;
}
/*
* NOTE: the backend MUST delete then add the entry,
* otherwise indexing may get hosed
* FIXME: if a new ID was used, the add could be done first.
* that would be safer.
*/
/* delete old one */
if ( dn2id_delete( op->o_bd, &old_ndn, e->e_id ) != 0 ) {
send_ldap_error( op, rs, LDAP_OTHER,
"DN index delete fail" );
goto return_results;
}
/* add new one */
if ( dn2id_add( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
/* try to repair old entry - probably hopeless */
if( dn2id_add( op->o_bd, &old_ndn, e->e_id) != 0 ) {
send_ldap_error( op, rs, LDAP_OTHER,
"DN index add and repair failed" );
} else {
send_ldap_error( op, rs, LDAP_OTHER,
"DN index add failed" );
}
goto return_results;
}
/* id2entry index */
if ( id2entry_add( op->o_bd, e ) != 0 ) {
/* Try to undo */
int rc;
rc = dn2id_delete( op->o_bd, &e->e_nname, e->e_id );
rc |= dn2id_add( op->o_bd, &old_ndn, e->e_id );
if( rc ) {
send_ldap_error( op, rs, LDAP_OTHER,
"entry update and repair failed" );
} else {
send_ldap_error( op, rs, LDAP_OTHER,
"entry update failed" );
}
goto return_results;
}
(void) cache_update_entry( &li->li_cache, e );
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
send_ldap_result( op, rs );
cache_entry_commit( e );
return_results:
slap_graduate_commit_csn( op );
if( new_dn.bv_val != NULL ) free( new_dn.bv_val );
if( new_ndn.bv_val != NULL ) free( new_ndn.bv_val );
if( old_ndn.bv_val != NULL ) free( old_ndn.bv_val );
/* LDAP v2 supporting correct attribute handling. */
if ( new_rdn != NULL ) {
ldap_rdnfree( new_rdn );
}
if ( old_rdn != NULL ) {
ldap_rdnfree( old_rdn );
}
if ( mod != NULL ) {
Modifications *tmp;
for (; mod; mod = tmp ) {
/* slap_modrdn2mods does things one way,
* slap_mods_opattrs does it differently
*/
if ( mod->sml_op != SLAP_MOD_SOFTADD &&
mod->sml_op != LDAP_MOD_DELETE ) break;
if ( mod->sml_nvalues ) free( mod->sml_nvalues[0].bv_val );
tmp = mod->sml_next;
free( mod );
}
slap_mods_free( mod, 1 );
}
/* LDAP v3 Support */
if( np != NULL ) {
/* free new parent and writer lock */
cache_return_entry_w( &li->li_cache, np );
}
if( p != NULL ) {
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
}
/* free entry and writer lock */
cache_return_entry_w( &li->li_cache, e );
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
rs->sr_text = NULL;
return( rs->sr_err );
}