/* filterindex.c - generate the list of candidate entries from a filter */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2006 The OpenLDAP Foundation.
+ * 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>.
*/
#include "portable.h"
#include "back-ldbm.h"
static ID_BLOCK *presence_candidates(
- Backend *be,
+ Operation *op,
AttributeDescription *desc );
static ID_BLOCK *equality_candidates(
- Backend *be, AttributeAssertion *ava );
+ Operation *op, AttributeAssertion *ava );
static ID_BLOCK *approx_candidates(
- Backend *be, AttributeAssertion *ava );
+ Operation *op, AttributeAssertion *ava );
static ID_BLOCK *substring_candidates(
- Backend *be,
+ Operation *op,
SubstringsAssertion *sub );
static ID_BLOCK *list_candidates(
- Backend *be,
+ Operation *op,
Filter *flist,
int ftype );
ID_BLOCK *
filter_candidates(
- Backend *be,
+ Operation *op,
Filter *f
)
{
- ID_BLOCK *result, *tmp1, *tmp2;
+ char *sub = "SUBTREE";
+ ID_BLOCK *result;
Debug( LDAP_DEBUG_TRACE, "=> filter_candidates\n", 0, 0, 0 );
+
result = NULL;
switch ( f->f_choice ) {
+ case SLAPD_FILTER_COMPUTED:
+ switch( f->f_result ) {
+ case SLAPD_COMPARE_UNDEFINED:
+ /* This technically is not the same as FALSE, but it
+ * certainly will produce no matches.
+ */
+ /* FALLTHRU */
+ case LDAP_COMPARE_FALSE:
+ result = NULL;
+ break;
+ case LDAP_COMPARE_TRUE:
+ result = idl_allids( op->o_bd );
+ break;
+ }
+ break;
+
case SLAPD_FILTER_DN_ONE:
Debug( LDAP_DEBUG_FILTER, "\tDN ONE\n", 0, 0, 0 );
- result = dn2idl( be, f->f_dn, DN_ONE_PREFIX );
+
+ /* an error is treated as an empty list */
+ if ( dn2idl( op->o_bd, f->f_dn, DN_ONE_PREFIX, &result ) != 0
+ && result != NULL ) {
+ idl_free( result );
+ result = NULL;
+ }
break;
+#ifdef SLAPD_FILTER_DN_CHILDREN
+ case SLAPD_FILTER_DN_CHILDREN:
+ sub = "CHILDREN";
+#endif
case SLAPD_FILTER_DN_SUBTREE:
- Debug( LDAP_DEBUG_FILTER, "\tDN SUBTREE\n", 0, 0, 0 );
- result = dn2idl( be, f->f_dn, DN_SUBTREE_PREFIX );
+ Debug( LDAP_DEBUG_FILTER,
+ "\tDN %s\n", sub, 0, 0 );
+
+ /* an error is treated as an empty list */
+ if ( dn2idl( op->o_bd, f->f_dn, DN_SUBTREE_PREFIX, &result ) != 0
+ && result != NULL ) {
+ idl_free( result );
+ result = NULL;
+ }
break;
case LDAP_FILTER_PRESENT:
Debug( LDAP_DEBUG_FILTER, "\tPRESENT\n", 0, 0, 0 );
- result = presence_candidates( be, f->f_desc );
+
+ result = presence_candidates( op, f->f_desc );
break;
case LDAP_FILTER_EQUALITY:
Debug( LDAP_DEBUG_FILTER, "\tEQUALITY\n", 0, 0, 0 );
- result = equality_candidates( be, f->f_ava );
+
+ result = equality_candidates( op, f->f_ava );
break;
case LDAP_FILTER_APPROX:
Debug( LDAP_DEBUG_FILTER, "\tAPPROX\n", 0, 0, 0 );
- result = approx_candidates( be, f->f_ava );
+
+ result = approx_candidates( op, f->f_ava );
break;
case LDAP_FILTER_SUBSTRINGS:
Debug( LDAP_DEBUG_FILTER, "\tSUBSTRINGS\n", 0, 0, 0 );
- result = substring_candidates( be, f->f_sub );
+
+ result = substring_candidates( op, f->f_sub );
break;
case LDAP_FILTER_GE:
Debug( LDAP_DEBUG_FILTER, "\tGE\n", 0, 0, 0 );
- result = idl_allids( be );
+
+ result = presence_candidates( op, f->f_ava->aa_desc );
break;
case LDAP_FILTER_LE:
Debug( LDAP_DEBUG_FILTER, "\tLE\n", 0, 0, 0 );
- result = idl_allids( be );
+
+ result = presence_candidates( op, f->f_ava->aa_desc );
break;
case LDAP_FILTER_AND:
Debug( LDAP_DEBUG_FILTER, "\tAND\n", 0, 0, 0 );
- result = list_candidates( be, f->f_and, LDAP_FILTER_AND );
+
+ result = list_candidates( op, f->f_and, LDAP_FILTER_AND );
break;
case LDAP_FILTER_OR:
Debug( LDAP_DEBUG_FILTER, "\tOR\n", 0, 0, 0 );
- result = list_candidates( be, f->f_or, LDAP_FILTER_OR );
+
+ result = list_candidates( op, f->f_or, LDAP_FILTER_OR );
break;
case LDAP_FILTER_NOT:
Debug( LDAP_DEBUG_FILTER, "\tNOT\n", 0, 0, 0 );
- tmp1 = idl_allids( be );
- tmp2 = filter_candidates( be, f->f_not );
- result = idl_notin( be, tmp1, tmp2 );
- idl_free( tmp2 );
- idl_free( tmp1 );
+
+ /*
+ * As candidates lists may contain entries which do
+ * not match the assertion, negation of the inner candidate
+ * list could result in matching entries be excluded from
+ * the returned candidate list.
+ */
+ result = idl_allids( op->o_bd );
+ break;
+ default:
+ Debug( LDAP_DEBUG_FILTER, "\tUNKNOWN\n", 0, 0, 0 );
+ /* unknown filters must not return NULL, to allow
+ * extended filter processing to be done later.
+ */
+ result = idl_allids( op->o_bd );
break;
}
Debug( LDAP_DEBUG_TRACE, "<= filter_candidates %ld\n",
result ? ID_BLOCK_NIDS(result) : 0, 0, 0 );
+
return( result );
}
static ID_BLOCK *
presence_candidates(
- Backend *be,
+ Operation *op,
AttributeDescription *desc
)
{
int rc;
char *dbname;
slap_mask_t mask;
- struct berval *prefix;
+ struct berval prefix = {0, NULL};
Debug( LDAP_DEBUG_TRACE, "=> presence_candidates\n", 0, 0, 0 );
- idl = idl_allids( be );
+ idl = idl_allids( op->o_bd );
+
+ if( desc == slap_schema.si_ad_objectClass ) {
+ return idl;
+ }
- rc = index_param( be, desc, LDAP_FILTER_PRESENT,
+ rc = index_param( op->o_bd, desc, LDAP_FILTER_PRESENT,
&dbname, &mask, &prefix );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= presence_candidates: index_param returned=%d\n",
rc, 0, 0 );
+
return idl;
}
Debug( LDAP_DEBUG_TRACE,
"<= presense_candidates: not indexed\n",
0, 0, 0 );
- ber_bvfree( prefix );
+
return idl;
}
- db = ldbm_cache_open( be, dbname, LDBM_SUFFIX, LDBM_READER );
+ db = ldbm_cache_open( op->o_bd, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
if ( db == NULL ) {
Debug( LDAP_DEBUG_ANY,
"<= presense_candidates db open failed (%s%s)\n",
dbname, LDBM_SUFFIX, 0 );
- ber_bvfree( prefix );
+
return idl;
}
- if( prefix != NULL ) {
+ if( prefix.bv_val != NULL ) {
idl_free( idl );
idl = NULL;
- rc = key_read( be, db, prefix, &idl );
+ rc = key_read( op->o_bd, db, &prefix, &idl );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= presense_candidates key read failed (%d)\n",
rc, 0, 0 );
+
} else if( idl == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"<= presense_candidates NULL\n",
0, 0, 0 );
+
}
}
- ldbm_cache_close( be, db );
- ber_bvfree( prefix );
+ ldbm_cache_close( op->o_bd, db );
Debug( LDAP_DEBUG_TRACE, "<= presence_candidates %ld\n",
idl ? ID_BLOCK_NIDS(idl) : 0, 0, 0 );
+
return( idl );
}
static ID_BLOCK *
equality_candidates(
- Backend *be,
+ Operation *op,
AttributeAssertion *ava
)
{
int rc;
char *dbname;
slap_mask_t mask;
- struct berval *prefix;
- struct berval **keys = NULL;
+ struct berval prefix = {0, NULL};
+ struct berval *keys = NULL;
MatchingRule *mr;
Debug( LDAP_DEBUG_TRACE, "=> equality_candidates\n", 0, 0, 0 );
- idl = idl_allids( be );
- rc = index_param( be, ava->aa_desc, LDAP_FILTER_EQUALITY,
+ idl = idl_allids( op->o_bd );
+
+ rc = index_param( op->o_bd, ava->aa_desc, LDAP_FILTER_EQUALITY,
&dbname, &mask, &prefix );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= equality_candidates: index_param returned=%d\n",
rc, 0, 0 );
+
return idl;
}
Debug( LDAP_DEBUG_TRACE,
"<= equality_candidates: not indexed\n",
0, 0, 0 );
- ber_bvfree( prefix );
+
return idl;
}
mr = ava->aa_desc->ad_type->sat_equality;
if( !mr ) {
- ber_bvfree( prefix );
return idl;
}
if( !mr->smr_filter ) {
- ber_bvfree( prefix );
return idl;
}
mask,
ava->aa_desc->ad_type->sat_syntax,
mr,
- prefix,
- ava->aa_value,
- &keys );
-
- ber_bvfree( prefix );
+ &prefix,
+ &ava->aa_value,
+ &keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= equality_candidates: (%s%s) MR filter failed (%d)\n",
dbname, LDBM_SUFFIX, rc );
+
return idl;
}
Debug( LDAP_DEBUG_TRACE,
"<= equality_candidates: no keys (%s%s)\n",
dbname, LDBM_SUFFIX, 0 );
+
return idl;
}
- db = ldbm_cache_open( be, dbname, LDBM_SUFFIX, LDBM_READER );
+ db = ldbm_cache_open( op->o_bd, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
if ( db == NULL ) {
Debug( LDAP_DEBUG_ANY,
"<= equality_candidates db open failed (%s%s)\n",
dbname, LDBM_SUFFIX, 0 );
+
return idl;
}
- for ( i= 0; keys[i] != NULL; i++ ) {
+ for ( i= 0; keys[i].bv_val != NULL; i++ ) {
ID_BLOCK *save;
ID_BLOCK *tmp;
- rc = key_read( be, db, keys[i], &tmp );
+ rc = key_read( op->o_bd, db, &keys[i], &tmp );
if( rc != LDAP_SUCCESS ) {
idl_free( idl );
Debug( LDAP_DEBUG_TRACE,
"<= equality_candidates key read failed (%d)\n",
rc, 0, 0 );
+
break;
}
Debug( LDAP_DEBUG_TRACE,
"<= equality_candidates NULL\n",
0, 0, 0 );
+
break;
}
save = idl;
- idl = idl_intersection( be, idl, tmp );
+ idl = idl_intersection( op->o_bd, idl, tmp );
idl_free( save );
idl_free( tmp );
if( idl == NULL ) break;
}
- ber_bvecfree( keys );
+ ber_bvarray_free_x( keys, op->o_tmpmemctx );
- ldbm_cache_close( be, db );
+ ldbm_cache_close( op->o_bd, db );
Debug( LDAP_DEBUG_TRACE, "<= equality_candidates %ld\n",
idl ? ID_BLOCK_NIDS(idl) : 0, 0, 0 );
+
return( idl );
}
static ID_BLOCK *
approx_candidates(
- Backend *be,
+ Operation *op,
AttributeAssertion *ava
)
{
int rc;
char *dbname;
slap_mask_t mask;
- struct berval *prefix;
- struct berval **keys = NULL;
+ struct berval prefix = {0, NULL};
+ struct berval *keys = NULL;
MatchingRule *mr;
Debug( LDAP_DEBUG_TRACE, "=> approx_candidates\n", 0, 0, 0 );
- idl = idl_allids( be );
- rc = index_param( be, ava->aa_desc, LDAP_FILTER_APPROX,
+ idl = idl_allids( op->o_bd );
+
+ rc = index_param( op->o_bd, ava->aa_desc, LDAP_FILTER_APPROX,
&dbname, &mask, &prefix );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= approx_candidates: index_param returned=%d\n",
rc, 0, 0 );
+
return idl;
}
Debug( LDAP_DEBUG_ANY,
"<= approx_candidates: not indexed\n",
0, 0, 0 );
- ber_bvfree( prefix );
+
return idl;
}
}
if( !mr ) {
- ber_bvfree( prefix );
return idl;
}
if( !mr->smr_filter ) {
- ber_bvfree( prefix );
return idl;
}
mask,
ava->aa_desc->ad_type->sat_syntax,
mr,
- prefix,
- ava->aa_value,
- &keys );
-
- ber_bvfree( prefix );
+ &prefix,
+ &ava->aa_value,
+ &keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= approx_candidates: (%s%s) MR filter failed (%d)\n",
dbname, LDBM_SUFFIX, rc );
+
return idl;
}
Debug( LDAP_DEBUG_TRACE,
"<= approx_candidates: no keys (%s%s)\n",
dbname, LDBM_SUFFIX, 0 );
+
return idl;
}
- db = ldbm_cache_open( be, dbname, LDBM_SUFFIX, LDBM_READER );
+ db = ldbm_cache_open( op->o_bd, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
if ( db == NULL ) {
Debug( LDAP_DEBUG_ANY,
"<= approx_candidates db open failed (%s%s)\n",
dbname, LDBM_SUFFIX, 0 );
+
return idl;
}
- for ( i= 0; keys[i] != NULL; i++ ) {
+ for ( i= 0; keys[i].bv_val != NULL; i++ ) {
ID_BLOCK *save;
ID_BLOCK *tmp;
- rc = key_read( be, db, keys[i], &tmp );
+ rc = key_read( op->o_bd, db, &keys[i], &tmp );
if( rc != LDAP_SUCCESS ) {
idl_free( idl );
idl = NULL;
Debug( LDAP_DEBUG_TRACE, "<= approx_candidates key read failed (%d)\n",
rc, 0, 0 );
+
break;
}
idl = NULL;
Debug( LDAP_DEBUG_TRACE, "<= approx_candidates NULL\n",
0, 0, 0 );
+
break;
}
save = idl;
- idl = idl_intersection( be, idl, tmp );
+ idl = idl_intersection( op->o_bd, idl, tmp );
idl_free( save );
+ idl_free( tmp );
if( idl == NULL ) break;
}
- ber_bvecfree( keys );
+ ber_bvarray_free_x( keys, op->o_tmpmemctx );
- ldbm_cache_close( be, db );
+ ldbm_cache_close( op->o_bd, db );
Debug( LDAP_DEBUG_TRACE, "<= approx_candidates %ld\n",
idl ? ID_BLOCK_NIDS(idl) : 0, 0, 0 );
+
return( idl );
}
static ID_BLOCK *
list_candidates(
- Backend *be,
+ Operation *op,
Filter *flist,
int ftype
)
Debug( LDAP_DEBUG_TRACE, "=> list_candidates 0x%x\n", ftype, 0, 0 );
+
idl = NULL;
for ( f = flist; f != NULL; f = f->f_next ) {
- if ( (tmp = filter_candidates( be, f )) == NULL &&
+ if ( (tmp = filter_candidates( op, f )) == NULL &&
ftype == LDAP_FILTER_AND ) {
- Debug( LDAP_DEBUG_TRACE,
- "<= list_candidates NULL\n", 0, 0, 0 );
- idl_free( idl );
- return( NULL );
+ Debug( LDAP_DEBUG_TRACE,
+ "<= list_candidates NULL\n", 0, 0, 0 );
+
+ idl_free( idl );
+ return( NULL );
}
tmp2 = idl;
if ( idl == NULL ) {
idl = tmp;
} else if ( ftype == LDAP_FILTER_AND ) {
- idl = idl_intersection( be, idl, tmp );
+ idl = idl_intersection( op->o_bd, idl, tmp );
idl_free( tmp );
idl_free( tmp2 );
} else {
- idl = idl_union( be, idl, tmp );
+ idl = idl_union( op->o_bd, idl, tmp );
idl_free( tmp );
idl_free( tmp2 );
}
Debug( LDAP_DEBUG_TRACE, "<= list_candidates %ld\n",
idl ? ID_BLOCK_NIDS(idl) : 0, 0, 0 );
+
return( idl );
}
static ID_BLOCK *
substring_candidates(
- Backend *be,
+ Operation *op,
SubstringsAssertion *sub
)
{
int rc;
char *dbname;
slap_mask_t mask;
- struct berval *prefix;
- struct berval **keys = NULL;
+ struct berval prefix = {0, NULL};
+ struct berval *keys = NULL;
MatchingRule *mr;
Debug( LDAP_DEBUG_TRACE, "=> substrings_candidates\n", 0, 0, 0 );
- idl = idl_allids( be );
- rc = index_param( be, sub->sa_desc, LDAP_FILTER_SUBSTRINGS,
+ idl = idl_allids( op->o_bd );
+
+ rc = index_param( op->o_bd, sub->sa_desc, LDAP_FILTER_SUBSTRINGS,
&dbname, &mask, &prefix );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= substrings_candidates: index_param returned=%d\n",
rc, 0, 0 );
+
return idl;
}
Debug( LDAP_DEBUG_ANY,
"<= substrings_candidates: not indexed\n",
0, 0, 0 );
- ber_bvfree( prefix );
+
return idl;
}
mr = sub->sa_desc->ad_type->sat_substr;
if( !mr ) {
- ber_bvfree( prefix );
return idl;
}
if( !mr->smr_filter ) {
- ber_bvfree( prefix );
return idl;
}
mask,
sub->sa_desc->ad_type->sat_syntax,
mr,
- prefix,
+ &prefix,
sub,
- &keys );
-
- ber_bvfree( prefix );
+ &keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= substrings_candidates: (%s%s) MR filter failed (%d)\n",
dbname, LDBM_SUFFIX, rc );
+
return idl;
}
Debug( LDAP_DEBUG_TRACE,
"<= substrings_candidates: (0x%04lx) no keys (%s%s)\n",
mask, dbname, LDBM_SUFFIX );
+
return idl;
}
- db = ldbm_cache_open( be, dbname, LDBM_SUFFIX, LDBM_READER );
+ db = ldbm_cache_open( op->o_bd, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
if ( db == NULL ) {
Debug( LDAP_DEBUG_ANY,
"<= substrings_candidates db open failed (%s%s)\n",
dbname, LDBM_SUFFIX, 0 );
+
return idl;
}
- for ( i= 0; keys[i] != NULL; i++ ) {
+ for ( i= 0; keys[i].bv_val != NULL; i++ ) {
ID_BLOCK *save;
ID_BLOCK *tmp;
- rc = key_read( be, db, keys[i], &tmp );
+ rc = key_read( op->o_bd, db, &keys[i], &tmp );
if( rc != LDAP_SUCCESS ) {
idl_free( idl );
idl = NULL;
Debug( LDAP_DEBUG_TRACE, "<= substrings_candidates key read failed (%d)\n",
rc, 0, 0 );
+
break;
}
idl = NULL;
Debug( LDAP_DEBUG_TRACE, "<= substrings_candidates NULL\n",
0, 0, 0 );
+
break;
}
save = idl;
- idl = idl_intersection( be, idl, tmp );
+ idl = idl_intersection( op->o_bd, idl, tmp );
idl_free( save );
+ idl_free( tmp );
if( idl == NULL ) break;
}
- ber_bvecfree( keys );
+ ber_bvarray_free_x( keys, op->o_tmpmemctx );
- ldbm_cache_close( be, db );
+ ldbm_cache_close( op->o_bd, db );
Debug( LDAP_DEBUG_TRACE, "<= substrings_candidates %ld\n",
idl ? ID_BLOCK_NIDS(idl) : 0, 0, 0 );
+
return( idl );
}
projects / openldap / blobdiff