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4f0e4f60bd
openldap/servers/slapd/back-bdb/modrdn.c
Kurt Zeilenga 4f0e4f60bd Add first cut BDB no-op control support.
2002-01-29 00:02:27 +00:00

698 lines
16 KiB
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/* modrdn.c - bdb backend modrdn routine */
/* $OpenLDAP$ */
/*
* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"
#include "external.h"
int
bdb_modrdn(
Backend *be,
Connection *conn,
Operation *op,
struct berval *dn,
struct berval *ndn,
struct berval *newrdn,
struct berval *nnewrdn,
int deleteoldrdn,
struct berval *newSuperior,
struct berval *nnewSuperior
)
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
AttributeDescription *children = slap_schema.si_ad_children;
struct berval p_dn, p_ndn;
struct berval new_dn = {0, NULL}, new_ndn = {0, NULL};
int isroot = -1;
Entry *e, *p = NULL;
Entry *matched;
int rc;
const char *text;
char textbuf[SLAP_TEXT_BUFLEN];
size_t textlen = sizeof textbuf;
DB_TXN * ltid = NULL;
struct bdb_op_info opinfo;
ID id;
int a_cnt, d_cnt;
LDAPRDN *new_rdn = NULL;
LDAPRDN *old_rdn = NULL;
Entry *np = NULL; /* newSuperior Entry */
struct berval *np_dn = NULL; /* newSuperior dn */
struct berval *np_ndn = NULL; /* newSuperior ndn */
struct berval *new_parent_dn = NULL; /* np_dn, p_dn, or NULL */
/* Used to interface with bdb_modify_internal() */
Modifications *mod = NULL; /* Used to delete old rdn */
int manageDSAit = get_manageDSAit( op );
Debug( LDAP_DEBUG_TRACE, "==>bdb_modrdn(%s,%s,%s)\n",
dn->bv_val, newrdn->bv_val,
newSuperior ? newSuperior->bv_val : "NULL" );
#if 0
if( newSuperior != NULL ) {
rc = LDAP_UNWILLING_TO_PERFORM;
text = "newSuperior not implemented (yet)";
goto return_results;
}
#endif
if( 0 ) {
retry: /* transaction retry */
if (e != NULL) {
bdb_cache_delete_entry(&bdb->bi_cache, e);
bdb_cache_return_entry_w(&bdb->bi_cache, e);
}
if (p != NULL) {
bdb_cache_return_entry_r(&bdb->bi_cache, p);
}
if (np != NULL) {
bdb_cache_return_entry_r(&bdb->bi_cache, np);
}
Debug( LDAP_DEBUG_TRACE, "==>bdb_modrdn: retrying...\n", 0, 0, 0 );
rc = txn_abort( ltid );
ltid = NULL;
op->o_private = NULL;
if( rc != 0 ) {
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
ldap_pvt_thread_yield();
}
/* begin transaction */
rc = txn_begin( bdb->bi_dbenv, NULL, &ltid,
bdb->bi_db_opflags );
text = NULL;
if( rc != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: txn_begin failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
opinfo.boi_bdb = be;
opinfo.boi_txn = ltid;
opinfo.boi_err = 0;
op->o_private = &opinfo;
/* get entry */
rc = bdb_dn2entry_w( be, ltid, ndn, &e, &matched, 0 );
switch( rc ) {
case 0:
case DB_NOTFOUND:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
default:
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
if ( e == NULL ) {
char* matched_dn = NULL;
BerVarray refs;
if( matched != NULL ) {
matched_dn = ch_strdup( matched->e_dn );
refs = is_entry_referral( matched )
? get_entry_referrals( be, conn, op, matched )
: NULL;
bdb_cache_return_entry_r( &bdb->bi_cache, matched );
matched = NULL;
} else {
refs = referral_rewrite( default_referral,
NULL, dn, LDAP_SCOPE_DEFAULT );
}
send_ldap_result( conn, op, rc = LDAP_REFERRAL,
matched_dn, NULL, refs, NULL );
ber_bvarray_free( refs );
free( matched_dn );
goto done;
}
if (!manageDSAit && is_entry_referral( e ) ) {
/* parent is a referral, don't allow add */
/* parent is an alias, don't allow add */
BerVarray refs = get_entry_referrals( be,
conn, op, e );
Debug( LDAP_DEBUG_TRACE, "bdb_modrdn: entry %s is referral\n",
e->e_dn, 0, 0 );
send_ldap_result( conn, op, rc = LDAP_REFERRAL,
e->e_dn, NULL, refs, NULL );
ber_bvarray_free( refs );
goto done;
}
if ( be_issuffix( be, &e->e_nname ) ) {
p_ndn = slap_empty_bv;
} else {
dnParent( &e->e_nname, &p_ndn );
}
np_ndn = &p_ndn;
if ( p_ndn.bv_len != 0 ) {
/* Make sure parent entry exist and we can write its
* children.
*/
rc = bdb_dn2entry_r( be, ltid, &p_ndn, &p, NULL, 0 );
switch( rc ) {
case 0:
case DB_NOTFOUND:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
default:
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
if( p == NULL) {
Debug( LDAP_DEBUG_TRACE, "bdb_modrdn: parent does not exist\n",
0, 0, 0);
rc = LDAP_OTHER;
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,
NULL, NULL, NULL, NULL );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_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,
"bdb_modrdn: parent dn=%s\n",
p_dn.bv_val, 0, 0 );
} else {
/* no parent, modrdn entry directly under root */
isroot = be_isroot( be, &op->o_ndn );
if ( ! isroot ) {
if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
|| be_isupdate( be, &op->o_ndn ) ) {
p = (Entry *)&slap_entry_root;
/* check parent for "children" acl */
rc = access_allowed( be, conn, op, p,
children, NULL, ACL_WRITE );
p = NULL;
if ( ! rc )
{
Debug( LDAP_DEBUG_TRACE,
"no access to parent\n",
0, 0, 0 );
send_ldap_result( conn, op,
LDAP_INSUFFICIENT_ACCESS,
NULL, NULL, NULL, NULL );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: wr to children of entry \"\" OK\n",
0, 0, 0 );
p_dn.bv_val = "";
p_dn.bv_len = 0;
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: parent dn=\"\"\n",
0, 0, 0 );
} else {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: no parent, not root "
"& \"\" is not suffix\n",
0, 0, 0);
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
}
}
new_parent_dn = &p_dn; /* New Parent unless newSuperior given */
if ( newSuperior != NULL ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: new parent \"%s\" requested...\n",
newSuperior->bv_val, 0, 0 );
if ( newSuperior->bv_len ) {
np_dn = newSuperior;
np_ndn = nnewSuperior;
/* newSuperior == oldParent?, if so ==> ERROR */
/* newSuperior == entry being moved?, if so ==> ERROR */
/* Get Entry with dn=newSuperior. Does newSuperior exist? */
rc = bdb_dn2entry_r( be, ltid, nnewSuperior, &np, NULL, 0 );
switch( rc ) {
case 0:
case DB_NOTFOUND:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
default:
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
if( np == NULL) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: newSup(ndn=%s) not here!\n",
np_ndn->bv_val, 0, 0);
rc = LDAP_OTHER;
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: wr to new parent OK np=%p, id=%ld\n",
np, (long) np->e_id, 0 );
/* check newSuperior for "children" acl */
if ( !access_allowed( be, conn, op, np, children, NULL, ACL_WRITE ) ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: no wr to newSup children\n",
0, 0, 0 );
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
if ( is_entry_alias( np ) ) {
/* parent is an alias, don't allow add */
Debug( LDAP_DEBUG_TRACE, "bdb_modrdn: entry is alias\n",
0, 0, 0 );
rc = LDAP_ALIAS_PROBLEM;
goto return_results;
}
if ( is_entry_referral( np ) ) {
/* parent is a referral, don't allow add */
Debug( LDAP_DEBUG_TRACE, "bdb_modrdn: entry is referral\n",
0, 0, 0 );
rc = LDAP_OPERATIONS_ERROR;
goto return_results;
}
} else {
if ( isroot == -1 ) {
isroot = be_isroot( be, &op->o_ndn );
}
np_dn = NULL;
/* no parent, modrdn entry directly under root */
if ( ! isroot ) {
if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
|| be_isupdate( be, &op->o_ndn ) ) {
np = (Entry *)&slap_entry_root;
/* check parent for "children" acl */
rc = access_allowed( be, conn, op, np,
children, NULL, ACL_WRITE );
np = NULL;
if ( ! rc )
{
Debug( LDAP_DEBUG_TRACE,
"no access to new superior\n",
0, 0, 0 );
send_ldap_result( conn, op,
LDAP_INSUFFICIENT_ACCESS,
NULL, NULL, NULL, NULL );
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: wr to children of entry \"\" OK\n",
0, 0, 0 );
} else {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: new superior=\"\", not root "
"& \"\" is not suffix\n",
0, 0, 0);
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
}
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: new superior=\"\"\n",
0, 0, 0 );
}
Debug( LDAP_DEBUG_TRACE,
"bdb_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, new_parent_dn, newrdn );
dnNormalize2( NULL, &new_dn, &new_ndn );
Debug( LDAP_DEBUG_TRACE, "bdb_modrdn: new ndn=%s\n",
new_ndn.bv_val, 0, 0 );
rc = bdb_dn2id ( be, ltid, &new_ndn, &id );
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case DB_NOTFOUND:
break;
case 0:
rc = LDAP_ALREADY_EXISTS;
goto return_results;
default:
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_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_str2rdn( newrdn->bv_val, &new_rdn, (char **)&text,
LDAP_DN_FORMAT_LDAP ) )
{
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: can't figure out type(s)/values(s) "
"of newrdn\n", 0, 0, 0 );
rc = LDAP_OPERATIONS_ERROR;
text = "unknown type(s) used in RDN";
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: new_rdn_type=\"%s\", new_rdn_val=\"%s\"\n",
new_rdn[0][0]->la_attr.bv_val, new_rdn[0][0]->la_value.bv_val, 0 );
if ( ldap_str2rdn( dn->bv_val, &old_rdn, (char **)&text,
LDAP_DN_FORMAT_LDAP ) )
{
Debug( LDAP_DEBUG_TRACE,
"bdb_back_modrdn: can't figure out the old_rdn "
"type(s)/value(s)\n", 0, 0, 0 );
rc = LDAP_OTHER;
text = "cannot parse RDN from old DN";
goto return_results;
}
#if 0
if ( newSuperior == NULL
&& charray_strcasecmp( ( const char ** )old_rdn_types,
( const char ** )new_rdn_types ) != 0 ) {
/* Not a big deal but we may say something */
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: old_rdn_type(s)=%s, new_rdn_type(s)=%s "
"do not match\n",
old_rdn_types[ 0 ], new_rdn_types[ 0 ], 0 );
}
#endif
/* Add new attribute values to the entry */
for ( a_cnt = 0; new_rdn[0][ a_cnt ]; a_cnt++ ) {
int rc;
AttributeDescription *desc = NULL;
Modifications *mod_tmp;
rc = slap_bv2ad( &new_rdn[0][ a_cnt ]->la_attr, &desc, &text );
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: %s: %s (new)\n",
text, new_rdn[0][ a_cnt ]->la_attr.bv_val, 0 );
goto return_results;
}
/* ACL check of newly added attrs */
if ( !access_allowed( be, conn, op, e, desc,
&new_rdn[0][ a_cnt ]->la_value, ACL_WRITE ) ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: access to attr \"%s\" "
"(new) not allowed\n",
new_rdn[0][ a_cnt ]->la_attr.bv_val, 0, 0 );
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
/* Apply modification */
mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications )
+ 2 * sizeof( struct berval ) );
mod_tmp->sml_desc = desc;
mod_tmp->sml_bvalues = ( BerVarray )( mod_tmp + 1 );
mod_tmp->sml_bvalues[ 0 ] = new_rdn[0][ a_cnt ]->la_value;
mod_tmp->sml_bvalues[ 1 ].bv_val = NULL;
mod_tmp->sml_op = SLAP_MOD_SOFTADD;
mod_tmp->sml_next = mod;
mod = mod_tmp;
}
/* Remove old rdn value if required */
if ( deleteoldrdn ) {
/* Get value of old rdn */
if ( old_rdn == NULL) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: can't figure out old RDN value(s) "
"from old RDN\n", 0, 0, 0 );
rc = LDAP_OTHER;
text = "could not parse value(s) from old RDN";
goto return_results;
}
for ( d_cnt = 0; old_rdn[0][ d_cnt ]; d_cnt++ ) {
int rc;
AttributeDescription *desc = NULL;
Modifications *mod_tmp;
rc = slap_bv2ad( &old_rdn[0][ d_cnt ]->la_attr,
&desc, &text );
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: %s: %s (old)\n",
text, old_rdn[0][ d_cnt ]->la_attr.bv_val, 0 );
goto return_results;
}
/* ACL check of newly added attrs */
if ( !access_allowed( be, conn, op, e, desc,
&old_rdn[0][d_cnt]->la_value, ACL_WRITE ) ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: access to attr \"%s\" "
"(old) not allowed\n",
old_rdn[0][ d_cnt ]->la_attr.bv_val, 0, 0 );
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
/* Apply modification */
mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications )
+ 2 * sizeof ( struct berval ) );
mod_tmp->sml_desc = desc;
mod_tmp->sml_bvalues = ( BerVarray )(mod_tmp+1);
mod_tmp->sml_bvalues[ 0 ] = old_rdn[0][ d_cnt ]->la_value;
mod_tmp->sml_bvalues[ 1 ].bv_val = NULL;
mod_tmp->sml_op = LDAP_MOD_DELETE;
mod_tmp->sml_next = mod;
mod = mod_tmp;
}
}
/* delete old one */
rc = bdb_dn2id_delete( be, ltid, p_ndn.bv_val, e );
if ( rc != 0 ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rc = LDAP_OTHER;
text = "DN index delete fail";
goto return_results;
}
(void) bdb_cache_delete_entry(&bdb->bi_cache, e);
/* Binary format uses a single contiguous block, cannot
* free individual fields. Leave new_dn/new_ndn set so
* they can be individually freed later.
*/
e->e_name = new_dn;
e->e_nname = new_ndn;
new_dn.bv_val = NULL;
new_ndn.bv_val = NULL;
/* add new one */
rc = bdb_dn2id_add( be, ltid, np_ndn, e );
if ( rc != 0 ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rc = LDAP_OTHER;
text = "DN index add failed";
goto return_results;
}
/* modify entry */
rc = bdb_modify_internal( be, conn, op, ltid, &mod[0], e,
&text, textbuf, textlen );
if( rc != LDAP_SUCCESS ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
goto return_results;
}
/* id2entry index */
rc = bdb_id2entry_update( be, ltid, e );
if ( rc != 0 ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rc = LDAP_OTHER;
text = "entry update failed";
goto return_results;
}
if( op->o_noop ) {
rc = txn_abort( ltid );
} else {
rc = txn_commit( ltid, 0 );
}
ltid = NULL;
op->o_private = NULL;
if( rc != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: txn_%s failed: %s (%d)\n",
op->o_noop ? "abort (no-op)" : "commit",
db_strerror(rc), rc );
rc = LDAP_OTHER;
text = "commit failed";
} else {
(void) bdb_cache_update_entry(&bdb->bi_cache, e);
Debug( LDAP_DEBUG_TRACE,
"bdb_modrdn: added%s id=%08lx dn=\"%s\"\n",
op->o_noop ? " (no-op)" : "",
e->e_id, e->e_dn );
rc = LDAP_SUCCESS;
text = NULL;
bdb_cache_entry_commit( e );
}
return_results:
send_ldap_result( conn, op, rc,
NULL, text, NULL, NULL );
if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
ldap_pvt_thread_yield();
TXN_CHECKPOINT( bdb->bi_dbenv,
bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
}
done:
if( new_dn.bv_val != NULL ) free( new_dn.bv_val );
if( new_ndn.bv_val != NULL ) free( new_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 ) {
tmp = mod->sml_next;
free( mod );
}
}
/* LDAP v3 Support */
if( np != NULL ) {
/* free new parent and reader lock */
bdb_cache_return_entry_r(&bdb->bi_cache, np);
}
if( p != NULL ) {
/* free parent and reader lock */
bdb_cache_return_entry_r(&bdb->bi_cache, p);
}
/* free entry */
if( e != NULL ) {
bdb_cache_return_entry_w( &bdb->bi_cache, e );
}
if( ltid != NULL ) {
txn_abort( ltid );
op->o_private = NULL;
}
return rc;
}
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