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https://git.openldap.org/openldap/openldap.git
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337 lines
6.4 KiB
C
337 lines
6.4 KiB
C
/* index.c - routines for dealing with attribute indexes */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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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>
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#include <ac/socket.h>
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#include "slap.h"
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#include "back-ldbm.h"
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static slap_mask_t index_mask(
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Backend *be,
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AttributeDescription *desc,
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char **dbname,
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char **atname )
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{
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AttributeType *at;
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slap_mask_t mask = 0;
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/* we do not support indexing of binary attributes */
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if( slap_ad_is_binary( desc ) ) return 0;
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attr_mask( be->be_private, desc->ad_cname->bv_val, &mask );
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if( mask ) {
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*atname = desc->ad_cname->bv_val;
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*dbname = desc->ad_cname->bv_val;
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return mask;
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}
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if( slap_ad_is_lang( desc ) ) {
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/* has language tag */
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attr_mask( be->be_private, desc->ad_type->sat_cname, &mask );
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if( mask & SLAP_INDEX_AUTO_LANG ) {
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*atname = desc->ad_cname->bv_val;
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*dbname = desc->ad_type->sat_cname;
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return mask;
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}
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if( mask & SLAP_INDEX_LANG ) {
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*atname = desc->ad_type->sat_cname;
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*dbname = desc->ad_type->sat_cname;
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return mask;
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}
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}
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/* see if supertype defined mask for its subtypes */
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for( at = desc->ad_type; at != NULL ; at = at->sat_sup ) {
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attr_mask( be->be_private, at->sat_cname, &mask );
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if( mask & SLAP_INDEX_AUTO_SUBTYPES ) {
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*atname = desc->ad_type->sat_cname;
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*dbname = at->sat_cname;
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return mask;
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}
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if( mask & SLAP_INDEX_SUBTYPES ) {
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*atname = at->sat_cname;
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*dbname = at->sat_cname;
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return mask;
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}
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if( mask ) break;
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}
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return 0;
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}
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int index_param(
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Backend *be,
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AttributeDescription *desc,
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int ftype,
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char **dbnamep,
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slap_mask_t *maskp,
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struct berval **prefixp )
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{
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slap_mask_t mask;
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char *dbname;
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char *atname;
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mask = index_mask( be, desc, &dbname, &atname );
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if( mask == 0 ) {
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return LDAP_INAPPROPRIATE_MATCHING;
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}
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switch(ftype) {
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case LDAP_FILTER_PRESENT:
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
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goto done;
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}
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break;
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case LDAP_FILTER_APPROX:
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
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goto done;
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}
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/* fall thru */
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case LDAP_FILTER_EQUALITY:
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
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goto done;
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}
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break;
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case LDAP_FILTER_SUBSTRINGS:
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
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goto done;
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}
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break;
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default:
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return LDAP_OTHER;
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}
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return LDAP_INAPPROPRIATE_MATCHING;
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done:
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*dbnamep = dbname;
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*prefixp = ber_bvstrdup( atname );
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*maskp = mask;
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return LDAP_SUCCESS;
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}
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static int indexer(
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Backend *be,
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char *dbname,
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char *atname,
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struct berval **vals,
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ID id,
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int op,
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slap_mask_t mask )
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{
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int rc, i;
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const char *text;
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DBCache *db;
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AttributeDescription *ad = NULL;
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struct berval **keys;
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struct berval prefix;
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assert( mask );
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rc = slap_str2ad( atname, &ad, &text );
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if( rc != LDAP_SUCCESS ) return rc;
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prefix.bv_val = atname;
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prefix.bv_len = strlen( atname );
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db = ldbm_cache_open( be, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
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if ( db == NULL ) {
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Debug( LDAP_DEBUG_ANY,
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"<= index_read NULL (could not open %s%s)\n",
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dbname, LDBM_SUFFIX, 0 );
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ad_free( ad, 1 );
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return LDAP_OTHER;
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}
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
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key_change( be, db, &prefix, id, op );
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}
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
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rc = ad->ad_type->sat_equality->smr_indexer(
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LDAP_FILTER_EQUALITY,
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mask,
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ad->ad_type->sat_syntax,
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ad->ad_type->sat_equality,
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&prefix, vals, &keys );
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if( rc == LDAP_SUCCESS && keys != NULL ) {
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for( i=0; keys[i] != NULL; i++ ) {
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key_change( be, db, keys[i], id, op );
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}
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ber_bvecfree( keys );
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}
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}
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
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rc = ad->ad_type->sat_approx->smr_indexer(
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LDAP_FILTER_APPROX,
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mask,
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ad->ad_type->sat_syntax,
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ad->ad_type->sat_approx,
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&prefix, vals, &keys );
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if( rc == LDAP_SUCCESS && keys != NULL ) {
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for( i=0; keys[i] != NULL; i++ ) {
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key_change( be, db, keys[i], id, op );
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}
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ber_bvecfree( keys );
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}
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}
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if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
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rc = ad->ad_type->sat_substr->smr_indexer(
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LDAP_FILTER_SUBSTRINGS,
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mask,
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ad->ad_type->sat_syntax,
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ad->ad_type->sat_substr,
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&prefix, vals, &keys );
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if( rc == LDAP_SUCCESS && keys != NULL ) {
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for( i=0; keys[i] != NULL; i++ ) {
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key_change( be, db, keys[i], id, op );
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}
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ber_bvecfree( keys );
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}
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}
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ldbm_cache_close( be, db );
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ad_free( ad, 1 );
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return LDAP_SUCCESS;
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}
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static int index_at_values(
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Backend *be,
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AttributeType *type,
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const char *lang,
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struct berval **vals,
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ID id,
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int op,
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char ** dbnamep,
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slap_mask_t *maskp )
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{
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slap_mask_t mask;
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slap_mask_t tmpmask = 0;
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int lindex = 0;
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if( type->sat_sup ) {
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/* recurse */
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(void) index_at_values( be,
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type->sat_sup, lang,
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vals, id, op,
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dbnamep, &tmpmask );
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}
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attr_mask( be->be_private, type->sat_cname, &mask );
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if( mask ) {
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*dbnamep = type->sat_cname;
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} else if ( tmpmask & SLAP_INDEX_AUTO_SUBTYPES ) {
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mask = tmpmask;
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}
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if( mask ) {
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indexer( be, *dbnamep,
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type->sat_cname,
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vals, id, op,
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mask );
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}
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if( lang ) {
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char *dbname = NULL;
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size_t tlen = strlen( type->sat_cname );
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size_t llen = strlen( lang );
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char *lname = ch_malloc( tlen + llen + sizeof(";") );
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sprintf( lname, "%s;%s", type->sat_cname, lang );
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attr_mask( be->be_private, lname, &tmpmask );
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if( tmpmask ) {
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dbname = lname;
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} else if ( mask & SLAP_INDEX_AUTO_LANG ) {
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dbname = *dbnamep;
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tmpmask = mask;
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}
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if( dbname != NULL ) {
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indexer( be, dbname, lname,
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vals, id, op,
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tmpmask );
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}
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ch_free( lname );
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}
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return LDAP_SUCCESS;
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}
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int index_values(
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Backend *be,
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AttributeDescription *desc,
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struct berval **vals,
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ID id,
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int op )
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{
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char *dbname = NULL;
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slap_mask_t mask;
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if( slap_ad_is_binary( desc ) ) {
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/* binary attributes have no index capabilities */
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return LDAP_SUCCESS;
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}
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(void) index_at_values( be,
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desc->ad_type, desc->ad_lang,
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vals, id, op,
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&dbname, &mask );
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return LDAP_SUCCESS;
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}
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int
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index_entry(
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Backend *be,
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int op,
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Entry *e,
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Attribute *ap
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)
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{
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Debug( LDAP_DEBUG_TRACE, "=> index_entry_%s( %ld, \"%s\" )\n",
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op == SLAP_INDEX_ADD_OP ? "add" : "del",
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e->e_id, e->e_dn );
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/* add each attribute to the indexes */
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for ( ; ap != NULL; ap = ap->a_next ) {
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index_values( be, ap->a_desc, ap->a_vals, e->e_id, op );
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}
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Debug( LDAP_DEBUG_TRACE, "<= index_entry_%s( %ld, \"%s\" ) success\n",
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op == SLAP_INDEX_ADD_OP ? "add" : "del",
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e->e_id, e->e_dn );
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return LDAP_SUCCESS;
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}
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