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

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/* modrdn.c - ldbm backend modrdn routine */
/*
* LDAP v3 newSuperior support. Add new rdn as an attribute.
* (Full support for v2 also used software/ideas contributed
* by Roy Hooper rhooper@cyberus.ca, thanks to him for his
* submission!.)
*
* 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 <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
int
ldbm_back_modrdn(
Backend *be,
Connection *conn,
Operation *op,
char *dn,
char *newrdn,
int deleteoldrdn,
char *newSuperior
)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
char *matched = NULL;
char *p_dn = NULL, *p_ndn = NULL;
char *new_dn = NULL, *new_ndn = NULL;
Entry *e, *p = NULL;
int rootlock = 0;
int rc = -1;
/* Added to support LDAP v2 correctly (deleteoldrdn thing) */
char *new_rdn_val = NULL; /* Val of new rdn */
char *new_rdn_type = NULL; /* Type of new rdn */
char *old_rdn; /* Old rdn's attr type & val */
char *old_rdn_type = NULL; /* Type of old rdn attr. */
char *old_rdn_val = NULL; /* Old rdn attribute value */
/* Added to support newSuperior */
Entry *np = NULL; /* newSuperior Entry */
char *np_dn = NULL; /* newSuperior dn */
char *np_ndn = NULL; /* newSuperior ndn */
char *new_parent_dn = NULL; /* np_dn, p_dn, or NULL */
/* Used to interface with ldbm_modify_internal() */
struct berval add_bv; /* Stores new rdn att */
struct berval *add_bvals[2]; /* Stores new rdn att */
struct berval del_bv; /* Stores old rdn att */
struct berval *del_bvals[2]; /* Stores old rdn att */
LDAPModList mod[2]; /* Used to delete old rdn */
Debug( LDAP_DEBUG_TRACE, "==>ldbm_back_modrdn(newSuperior=%s)\n",
(newSuperior ? newSuperior : "NULL"),
0, 0 );
/* get entry with writer lock */
if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
if ( matched != NULL ) {
free( matched );
}
return( -1 );
}
#ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
/* check parent for "children" acl */
if ( ! access_allowed( be, conn, op, e,
"entry", NULL, ACL_WRITE ) )
{
Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
0, 0 );
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
"", "" );
goto return_results;
}
#endif
if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
/* Make sure parent entry exist and we can write its
* children.
*/
if( (p = dn2entry_w( be, p_ndn, &matched )) == NULL) {
Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
0, 0, 0);
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
"", "");
goto return_results;
}
/* check parent for "children" acl */
if ( ! access_allowed( be, conn, op, p,
"children", NULL, ACL_WRITE ) )
{
Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
0, 0 );
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
"", "" );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: wr to children of entry %s OK\n",
p_ndn, 0, 0 );
p_dn = dn_parent( be, e->e_dn );
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
p_dn, 0, 0 );
} else {
/* no parent, modrdn entry directly under root */
if( ! be_isroot( be, op->o_ndn ) ) {
Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
0, 0, 0);
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
"", "");
goto return_results;
}
ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
rootlock = 1;
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: no parent, locked root\n",
0, 0, 0 );
}/* if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) else */
new_parent_dn = p_dn; /* New Parent unless newSuperior given */
if ( (np_dn = newSuperior) != NULL) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: new parent requested...\n",
0, 0, 0 );
np_ndn = dn_normalize_case( ch_strdup( np_dn ) );
/* newSuperior == oldParent?, if so ==> ERROR */
/* newSuperior == entry being moved?, if so ==> ERROR */
/* Get Entry with dn=newSuperior. Does newSuperior exist? */
if( (np = dn2entry_w( be, np_ndn, &matched )) == NULL) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
np_ndn, 0, 0);
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "",
"");
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: wr to new parent OK np=%p, id=%d\n",
np, np->e_id, 0 );
/* check newSuperior for "children" acl */
if ( !access_allowed( be, conn, op, np, "children", NULL,
ACL_WRITE ) )
{
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: no wr to newSup children\n",
0, 0, 0 );
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
"", "" );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: wr to new parent's children OK\n",
0, 0 , 0 );
new_parent_dn = np_dn;
}
/* Build target dn and make sure target entry doesn't exist already. */
build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn );
new_ndn = dn_normalize_case( ch_strdup(new_dn) );
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
new_ndn, 0, 0 );
if (dn2id ( be, new_ndn ) != NOID) {
send_ldap_result( conn, op, LDAP_ALREADY_EXISTS, NULL, NULL );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: new ndn=%s does not exist\n",
new_ndn, 0, 0 );
/* check for abandon */
ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
if ( op->o_abandon ) {
ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
goto return_results;
}
ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
/* delete old one */
if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
goto return_results;
}
(void) cache_delete_entry( &li->li_cache, e );
free( e->e_dn );
free( e->e_ndn );
e->e_dn = new_dn;
e->e_ndn = new_ndn;
/* add new one */
if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
goto return_results;
}
/* Get attribute type and attribute value of our new rdn, we will
* need to add that to our new entry
*/
if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out type of newrdn\n",
0, 0, 0 );
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
goto return_results;
}
if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out val of newrdn\n",
0, 0, 0 );
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: new_rdn_val=\"%s\", new_rdn_type=\"%s\"\n",
new_rdn_val, new_rdn_type, 0 );
/* Retrieve the old rdn from the entry's dn */
if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out old_rdn from dn\n",
0, 0, 0 );
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
goto return_results;
}
if ( (old_rdn_type = rdn_attr_type( old_rdn )) == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out the old_rdn type\n",
0, 0, 0 );
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
goto return_results;
}
if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
/* Not a big deal but we may say something */
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
old_rdn_type, new_rdn_type, 0 );
}
if ( dn_type( old_rdn ) == DN_X500 ) {
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
0, 0, 0 );
/* Add new attribute value to the entry.
*/
add_bvals[0] = &add_bv; /* Array of bervals */
add_bvals[1] = NULL;
add_bv.bv_val = new_rdn_val;
add_bv.bv_len = strlen(new_rdn_val);
mod[0].ml_type = new_rdn_type;
mod[0].ml_bvalues = add_bvals;
mod[0].ml_op = LDAP_MOD_SOFTADD;
mod[0].ml_next = NULL;
/* Remove old rdn value if required */
if (deleteoldrdn) {
/* Get value of old rdn */
if ((old_rdn_val = rdn_attr_value( old_rdn ))
== NULL) {
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
0, 0, 0 );
send_ldap_result( conn, op,
LDAP_OPERATIONS_ERROR,
"", "" );
goto return_results;
}
del_bvals[0] = &del_bv; /* Array of bervals */
del_bvals[1] = NULL;
/* Remove old value of rdn as an attribute. */
del_bv.bv_val = old_rdn_val;
del_bv.bv_len = strlen(old_rdn_val);
/* No need to normalize old_rdn_type, delete_values()
* does that for us
*/
mod[0].ml_next = &mod[1];
mod[1].ml_type = old_rdn_type;
mod[1].ml_bvalues = del_bvals;
mod[1].ml_op = LDAP_MOD_DELETE;
mod[1].ml_next = NULL;
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: removing old_rdn_val=%s\n",
old_rdn_val, 0, 0 );
}/* if (deleteoldrdn) */
} else {
Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DNS DN\n",
0, 0, 0 );
/* XXXV3: not sure of what to do here */
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_modrdn: not fully implemented...\n",
0, 0, 0 );
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
NULL );
goto return_results;
}
/* modify memory copy of entry */
if ( ldbm_modify_internal( be, conn, op, dn, &mod[0], e )
!= 0 ) {
goto return_results;
}
(void) cache_update_entry( &li->li_cache, e );
/* NOTE: after this you must not free new_dn or new_ndn!
* They are used by cache.
*/
/* id2entry index */
if ( id2entry_add( be, e ) != 0 ) {
entry_free( e );
send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
goto return_results_after;
}
send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
rc = 0;
goto return_results_after;
return_results:
if( new_dn != NULL ) free( new_dn );
if( new_ndn != NULL ) free( new_ndn );
return_results_after:
/* NOTE:
* new_dn and new_ndn are not deallocated because they are used by
* the cache entry.
*/
if( p_dn != NULL ) free( p_dn );
if( p_ndn != NULL ) free( p_ndn );
if( matched != NULL ) free( matched );
/* LDAP v2 supporting correct attribute handling. */
if( new_rdn_type != NULL ) free(new_rdn_type);
if( new_rdn_val != NULL ) free(new_rdn_val);
if( old_rdn != NULL ) free(old_rdn);
if( old_rdn_type != NULL ) free(old_rdn_type);
if( old_rdn_val != NULL ) free(old_rdn_val);
/* LDAP v3 Support */
if ( np_dn != NULL ) free( np_dn );
if ( np_ndn != NULL ) free( np_ndn );
if( p != NULL ) {
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
}
if ( rootlock ) {
/* release root writer 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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