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

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/* index.c - routines for dealing with attribute indexes */
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
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* Copyright 1998-2004 The OpenLDAP Foundation.
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* 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
* <http://www.OpenLDAP.org/license.html>.
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*/
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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"
static slap_mask_t index_mask(
Backend *be,
AttributeDescription *desc,
char **dbname,
struct berval *atname )
{
AttributeType *at;
slap_mask_t mask = 0;
attr_mask( be->be_private, desc, &mask );
if( mask ) {
*atname = desc->ad_cname;
*dbname = desc->ad_cname.bv_val;
return mask;
}
/* If there is a tagging option, did we ever index the base
* type? If so, check for mask, otherwise it's not there.
*/
if( slap_ad_is_tagged( desc ) && desc != desc->ad_type->sat_ad ) {
/* has tagging option */
attr_mask( be->be_private, desc->ad_type->sat_ad, &mask );
if( mask && ( mask ^ SLAP_INDEX_NOTAGS ) ) {
*atname = desc->ad_type->sat_cname;
*dbname = desc->ad_type->sat_cname.bv_val;
return mask;
}
}
/* see if supertype defined mask for its subtypes */
for( at = desc->ad_type->sat_sup; at != NULL ; at = at->sat_sup ) {
/* If no AD, we've never indexed this type */
if (!at->sat_ad)
continue;
attr_mask( be->be_private, at->sat_ad, &mask );
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if( mask && ( mask ^ SLAP_INDEX_NOSUBTYPES ) ) {
*atname = at->sat_cname;
*dbname = at->sat_cname.bv_val;
return mask;
}
}
return 0;
}
int index_is_indexed(
Backend *be,
AttributeDescription *desc )
{
slap_mask_t mask;
char *dbname;
struct berval prefix;
mask = index_mask( be, desc, &dbname, &prefix );
if( mask == 0 ) {
return LDAP_INAPPROPRIATE_MATCHING;
}
return LDAP_SUCCESS;
}
int index_param(
Backend *be,
AttributeDescription *desc,
int ftype,
char **dbnamep,
slap_mask_t *maskp,
struct berval *prefixp )
{
slap_mask_t mask;
char *dbname;
mask = index_mask( be, desc, &dbname, prefixp );
if( mask == 0 ) {
return LDAP_INAPPROPRIATE_MATCHING;
}
switch( ftype ) {
case LDAP_FILTER_PRESENT:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
goto done;
}
break;
case LDAP_FILTER_APPROX:
if ( desc->ad_type->sat_approx ) {
if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
goto done;
}
break;
}
/* Use EQUALITY rule and index for approximate match */
/* fall thru */
case LDAP_FILTER_EQUALITY:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
goto done;
}
break;
case LDAP_FILTER_SUBSTRINGS:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
goto done;
}
break;
default:
return LDAP_OTHER;
}
return LDAP_INAPPROPRIATE_MATCHING;
done:
*dbnamep = dbname;
*maskp = mask;
return LDAP_SUCCESS;
}
static int indexer(
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Operation *op,
char *dbname,
struct berval *atname,
BerVarray vals,
ID id,
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int opid,
slap_mask_t mask )
{
int rc, i;
const char *text;
DBCache *db;
AttributeDescription *ad = NULL;
struct berval *keys;
assert( mask );
rc = slap_bv2ad( atname, &ad, &text );
if( rc != LDAP_SUCCESS ) return rc;
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db = ldbm_cache_open( op->o_bd, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
if ( db == NULL ) {
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#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"index_read: Could not open db %s%s\n", dbname, LDBM_SUFFIX, 0 );
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#else
Debug( LDAP_DEBUG_ANY,
"<= index_read NULL (could not open %s%s)\n",
dbname, LDBM_SUFFIX, 0 );
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#endif
return LDAP_OTHER;
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
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key_change( op->o_bd, db, atname, id, opid );
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
rc = ad->ad_type->sat_equality->smr_indexer(
LDAP_FILTER_EQUALITY,
mask,
ad->ad_type->sat_syntax,
ad->ad_type->sat_equality,
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atname, vals, &keys, op->o_tmpmemctx );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i].bv_val != NULL; i++ ) {
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key_change( op->o_bd, db, &keys[i], id, opid );
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}
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ber_bvarray_free_x( keys, op->o_tmpmemctx );
}
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
rc = ad->ad_type->sat_approx->smr_indexer(
LDAP_FILTER_APPROX,
mask,
ad->ad_type->sat_syntax,
ad->ad_type->sat_approx,
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atname, vals, &keys, op->o_tmpmemctx );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i].bv_val != NULL; i++ ) {
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key_change( op->o_bd, db, &keys[i], id, opid );
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}
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ber_bvarray_free_x( keys, op->o_tmpmemctx );
}
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
rc = ad->ad_type->sat_substr->smr_indexer(
LDAP_FILTER_SUBSTRINGS,
mask,
ad->ad_type->sat_syntax,
ad->ad_type->sat_substr,
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atname, vals, &keys, op->o_tmpmemctx );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i].bv_val != NULL; i++ ) {
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key_change( op->o_bd, db, &keys[i], id, opid );
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}
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ber_bvarray_free_x( keys, op->o_tmpmemctx );
}
}
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ldbm_cache_close( op->o_bd, db );
return LDAP_SUCCESS;
}
static int index_at_values(
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Operation *op,
AttributeType *type,
struct berval *tags,
BerVarray vals,
ID id,
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int opid )
{
slap_mask_t mask = 0;
if( type->sat_sup ) {
/* recurse */
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(void) index_at_values( op,
type->sat_sup, tags,
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vals, id, opid );
}
/* If this type has no AD, we've never used it before */
if( type->sat_ad ) {
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attr_mask( op->o_bd->be_private, type->sat_ad, &mask );
}
if( mask ) {
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indexer( op, type->sat_cname.bv_val,
&type->sat_cname,
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vals, id, opid,
mask );
}
if( tags->bv_len ) {
AttributeDescription *desc;
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mask = 0;
desc = ad_find_tags(type, tags);
if( desc ) {
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attr_mask( op->o_bd->be_private, desc, &mask );
}
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if( mask ) {
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indexer( op, desc->ad_cname.bv_val, &desc->ad_cname,
vals, id, opid,
mask );
}
}
return LDAP_SUCCESS;
}
int index_values(
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Operation *op,
AttributeDescription *desc,
BerVarray vals,
ID id,
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int opid )
{
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(void) index_at_values( op,
desc->ad_type, &desc->ad_tags,
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vals, id, opid );
return LDAP_SUCCESS;
}
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int
index_entry(
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Operation *op,
int opid,
Entry *e )
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{
Attribute *ap = e->e_attrs;
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#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ENTRY,
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"index_entry: %s (%s)%ld\n", opid == SLAP_INDEX_ADD_OP ? "add" : "del",
e->e_dn, e->e_id );
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#else
Debug( LDAP_DEBUG_TRACE, "=> index_entry_%s( %ld, \"%s\" )\n",
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opid == SLAP_INDEX_ADD_OP ? "add" : "del",
e->e_id, e->e_dn );
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#endif
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/* add each attribute to the indexes */
for ( ; ap != NULL; ap = ap->a_next ) {
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index_values( op, ap->a_desc,
ap->a_nvals,
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e->e_id, opid );
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}
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#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ENTRY, "index_entry: success\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE, "<= index_entry_%s( %ld, \"%s\" ) success\n",
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opid == SLAP_INDEX_ADD_OP ? "add" : "del",
e->e_id, e->e_dn );
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#endif
return LDAP_SUCCESS;
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}