openldap/servers/slapd/back-ldbm/delete.c

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/* delete.c - ldbm backend delete routine */
/* $OpenLDAP$ */
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/*
* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
#include <ac/socket.h>
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#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
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int
ldbm_back_delete(
Backend *be,
Connection *conn,
Operation *op,
char *dn,
char *ndn
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)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
Entry *matched;
char *pdn = NULL;
Entry *e, *p = NULL;
int rootlock = 0;
int rc = -1;
int manageDSAit = get_manageDSAit( op );
#ifdef SLAPD_SCHEMA_NOT_COMPAT
static AttributeDescription *children = NULL;
#else
static const char *children = "children";
#endif
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Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
/* get entry with writer lock */
if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
char *matched_dn = NULL;
struct berval **refs = NULL;
Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
dn, 0, 0);
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if ( matched != NULL ) {
matched_dn = ch_strdup( matched->e_dn );
refs = is_entry_referral( matched )
? get_entry_referrals( be, conn, op, matched )
: NULL;
cache_return_entry_r( &li->li_cache, matched );
} else {
refs = default_referral;
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}
send_ldap_result( conn, op, LDAP_REFERRAL,
matched_dn, NULL, refs, NULL );
if ( matched != NULL ) {
ber_bvecfree( refs );
free( matched_dn );
}
return( -1 );
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}
#ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
if ( ! access_allowed( be, conn, op, e,
"entry", NULL, ACL_WRITE ) )
{
Debug(LDAP_DEBUG_ARGS,
"<=- ldbm_back_delete: insufficient access %s\n",
dn, 0, 0);
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
NULL, NULL, NULL, NULL );
goto return_results;
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}
#endif
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if ( !manageDSAit && is_entry_referral( e ) ) {
/* parent is a referral, don't allow add */
/* parent is an alias, don't allow add */
struct berval **refs = get_entry_referrals( be,
conn, op, e );
Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
0, 0 );
send_ldap_result( conn, op, LDAP_REFERRAL,
e->e_dn, NULL, refs, NULL );
ber_bvecfree( refs );
rc = 1;
goto return_results;
}
if ( has_children( be, e ) ) {
Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
dn, 0, 0);
send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
NULL, "subtree delete not supported", NULL, NULL );
goto return_results;
}
/* delete from parent's id2children entry */
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if( (pdn = dn_parent( be, e->e_ndn )) != NULL ) {
if( (p = dn2entry_w( be, pdn, NULL )) == NULL) {
Debug( LDAP_DEBUG_TRACE,
"<=- ldbm_back_delete: parent does not exist\n",
0, 0, 0);
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "could not locate parent of entry", NULL, NULL );
goto return_results;
}
/* check parent for "children" acl */
if ( ! access_allowed( be, conn, op, p,
children, NULL, ACL_WRITE ) )
{
Debug( LDAP_DEBUG_TRACE,
"<=- ldbm_back_delete: no access to parent\n", 0,
0, 0 );
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
NULL, NULL, NULL, NULL );
goto return_results;
}
} else {
/* no parent, must be root to delete */
if( ! be_isroot( be, op->o_ndn ) ) {
Debug( LDAP_DEBUG_TRACE,
"<=- ldbm_back_delete: no parent & not root\n",
0, 0, 0);
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
NULL, NULL, NULL, NULL );
goto return_results;
}
ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
rootlock = 1;
}
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/* delete from dn2id mapping */
if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
Debug(LDAP_DEBUG_ARGS,
"<=- ldbm_back_delete: operations error %s\n",
dn, 0, 0);
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "DN index delete failed", NULL, NULL );
goto return_results;
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}
/* delete from disk and cache */
if ( id2entry_delete( be, e ) != 0 ) {
Debug(LDAP_DEBUG_ARGS,
"<=- ldbm_back_delete: operations error %s\n",
dn, 0, 0);
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "entry delete failed", NULL, NULL );
goto return_results;
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}
send_ldap_result( conn, op, LDAP_SUCCESS,
NULL, NULL, NULL, NULL );
rc = 0;
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return_results:;
if ( pdn != NULL ) free(pdn);
if( p != NULL ) {
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
}
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if ( rootlock ) {
/* release root lock */
ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
}
/* free entry and writer lock */
cache_return_entry_w( &li->li_cache, e );
return rc;
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}