/* Append sorted list b to sorted list a. The result is unsorted but
* a[1] is the min of the result and a[a[0]] is the max.
*/
int mdb_idl_append( ID *a, ID *b )
{
ID ida, idb, tmp, swap = 0;
if ( MDB_IDL_IS_ZERO( b ) ) {
return 0;
}
if ( MDB_IDL_IS_ZERO( a ) ) {
MDB_IDL_CPY( a, b );
return 0;
}
ida = MDB_IDL_LAST( a );
idb = MDB_IDL_LAST( b );
if ( MDB_IDL_IS_RANGE( a ) || MDB_IDL_IS_RANGE(b) ||
a[0] + b[0] >= MDB_IDL_UM_MAX ) {
a[2] = IDL_MAX( ida, idb );
a[1] = IDL_MIN( a[1], b[1] );
a[0] = NOID;
return 0;
}
if ( b[0] > 1 && ida > idb ) {
swap = idb;
a[a[0]] = idb;
b[b[0]] = ida;
}
if ( b[1] < a[1] ) {
tmp = a[1];
a[1] = b[1];
} else {
tmp = b[1];
}
a[0]++;
a[a[0]] = tmp;
if ( b[0] > 1 ) {
int i = b[0] - 1;
AC_MEMCPY(a+a[0]+1, b+2, i * sizeof(ID));
a[0] += i;
}
if ( swap ) {
b[b[0]] = swap;
}
return 0;
}
int
mdb_filter_candidates(
Operation *op,
MDB_txn *rtxn,
Filter *f,
ID *ids,
ID *tmp,
ID *stack )
{
int rc = 0;
#ifdef LDAP_COMP_MATCH
AttributeAliasing *aa;
#endif
Debug( LDAP_DEBUG_FILTER, "=> mdb_filter_candidates\n", 0, 0, 0 );
if ( f->f_choice & SLAPD_FILTER_UNDEFINED ) {
MDB_IDL_ZERO( ids );
goto out;
}
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.
*/
/* FALL THRU */
case LDAP_COMPARE_FALSE:
MDB_IDL_ZERO( ids );
break;
case LDAP_COMPARE_TRUE:
MDB_IDL_ALL( ids );
break;
case LDAP_SUCCESS:
/* this is a pre-computed scope, leave it alone */
break;
}
break;
case LDAP_FILTER_PRESENT:
Debug( LDAP_DEBUG_FILTER, "\tPRESENT\n", 0, 0, 0 );
rc = presence_candidates( op, rtxn, f->f_desc, ids );
break;
case LDAP_FILTER_EQUALITY:
Debug( LDAP_DEBUG_FILTER, "\tEQUALITY\n", 0, 0, 0 );
#ifdef LDAP_COMP_MATCH
if ( is_aliased_attribute && ( aa = is_aliased_attribute ( f->f_ava->aa_desc ) ) ) {
rc = ava_comp_candidates ( op, rtxn, f->f_ava, aa, ids, tmp, stack );
}
else
#endif
{
rc = equality_candidates( op, rtxn, f->f_ava, ids, tmp );
}
break;
case LDAP_FILTER_APPROX:
Debug( LDAP_DEBUG_FILTER, "\tAPPROX\n", 0, 0, 0 );
rc = approx_candidates( op, rtxn, f->f_ava, ids, tmp );
break;
case LDAP_FILTER_SUBSTRINGS:
Debug( LDAP_DEBUG_FILTER, "\tSUBSTRINGS\n", 0, 0, 0 );
rc = substring_candidates( op, rtxn, f->f_sub, ids, tmp );
break;
case LDAP_FILTER_GE:
/* if no GE index, use pres */
Debug( LDAP_DEBUG_FILTER, "\tGE\n", 0, 0, 0 );
if( f->f_ava->aa_desc->ad_type->sat_ordering &&
( f->f_ava->aa_desc->ad_type->sat_ordering->smr_usage & SLAP_MR_ORDERED_INDEX ) )
rc = inequality_candidates( op, rtxn, f->f_ava, ids, tmp, LDAP_FILTER_GE );
else
rc = presence_candidates( op, rtxn, f->f_ava->aa_desc, ids );
break;
case LDAP_FILTER_LE:
/* if no LE index, use pres */
Debug( LDAP_DEBUG_FILTER, "\tLE\n", 0, 0, 0 );
if( f->f_ava->aa_desc->ad_type->sat_ordering &&
( f->f_ava->aa_desc->ad_type->sat_ordering->smr_usage & SLAP_MR_ORDERED_INDEX ) )
rc = inequality_candidates( op, rtxn, f->f_ava, ids, tmp, LDAP_FILTER_LE );
else
rc = presence_candidates( op, rtxn, f->f_ava->aa_desc, ids );
break;
case LDAP_FILTER_NOT:
/* no indexing to support NOT filters */
Debug( LDAP_DEBUG_FILTER, "\tNOT\n", 0, 0, 0 );
MDB_IDL_ALL( ids );
break;
case LDAP_FILTER_AND:
Debug( LDAP_DEBUG_FILTER, "\tAND\n", 0, 0, 0 );
rc = list_candidates( op, rtxn,
f->f_and, LDAP_FILTER_AND, ids, tmp, stack );
break;
case LDAP_FILTER_OR:
Debug( LDAP_DEBUG_FILTER, "\tOR\n", 0, 0, 0 );
rc = list_candidates( op, rtxn,
f->f_or, LDAP_FILTER_OR, ids, tmp, stack );
break;
case LDAP_FILTER_EXT:
Debug( LDAP_DEBUG_FILTER, "\tEXT\n", 0, 0, 0 );
rc = ext_candidates( op, rtxn, f->f_mra, ids, tmp, stack );
break;
default:
Debug( LDAP_DEBUG_FILTER, "\tUNKNOWN %lu\n",
(unsigned long) f->f_choice, 0, 0 );
/* Must not return NULL, otherwise extended filters break */
MDB_IDL_ALL( ids );
}
out:
Debug( LDAP_DEBUG_FILTER,
"<= mdb_filter_candidates: id=%ld first=%ld last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST( ids ),
(long) MDB_IDL_LAST( ids ) );
return rc;
}
static int
substring_candidates(
Operation *op,
MDB_txn *rtxn,
SubstringsAssertion *sub,
ID *ids,
ID *tmp )
{
MDB_dbi dbi;
int i;
int rc;
slap_mask_t mask;
struct berval prefix = {0, NULL};
struct berval *keys = NULL;
MatchingRule *mr;
Debug( LDAP_DEBUG_TRACE, "=> mdb_substring_candidates (%s)\n",
sub->sa_desc->ad_cname.bv_val, 0, 0 );
MDB_IDL_ALL( ids );
rc = mdb_index_param( op->o_bd, sub->sa_desc, LDAP_FILTER_SUBSTRINGS,
&dbi, &mask, &prefix );
if ( rc == LDAP_INAPPROPRIATE_MATCHING ) {
Debug( LDAP_DEBUG_ANY,
"<= mdb_substring_candidates: (%s) not indexed\n",
sub->sa_desc->ad_cname.bv_val, 0, 0 );
return 0;
}
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"<= mdb_substring_candidates: (%s) "
"index_param failed (%d)\n",
sub->sa_desc->ad_cname.bv_val, rc, 0 );
return 0;
}
mr = sub->sa_desc->ad_type->sat_substr;
if( !mr ) {
return 0;
}
if( !mr->smr_filter ) {
return 0;
}
rc = (mr->smr_filter)(
LDAP_FILTER_SUBSTRINGS,
mask,
sub->sa_desc->ad_type->sat_syntax,
mr,
&prefix,
sub,
&keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_substring_candidates: (%s) "
"MR filter failed (%d)\n",
sub->sa_desc->ad_cname.bv_val, rc, 0 );
return 0;
}
if( keys == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_substring_candidates: (0x%04lx) no keys (%s)\n",
mask, sub->sa_desc->ad_cname.bv_val, 0 );
return 0;
}
for ( i= 0; keys[i].bv_val != NULL; i++ ) {
rc = mdb_key_read( op->o_bd, rtxn, dbi, &keys[i], tmp, NULL, 0 );
if( rc == MDB_NOTFOUND ) {
MDB_IDL_ZERO( ids );
rc = 0;
break;
} else if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_substring_candidates: (%s) "
"key read failed (%d)\n",
sub->sa_desc->ad_cname.bv_val, rc, 0 );
break;
}
if( MDB_IDL_IS_ZERO( tmp ) ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_substring_candidates: (%s) NULL\n",
sub->sa_desc->ad_cname.bv_val, 0, 0 );
MDB_IDL_ZERO( ids );
break;
}
if ( i == 0 ) {
MDB_IDL_CPY( ids, tmp );
} else {
mdb_idl_intersection( ids, tmp );
}
if( MDB_IDL_IS_ZERO( ids ) )
break;
}
ber_bvarray_free_x( keys, op->o_tmpmemctx );
Debug( LDAP_DEBUG_TRACE, "<= mdb_substring_candidates: %ld, first=%ld, last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
return( rc );
}
static int
equality_candidates(
Operation *op,
MDB_txn *rtxn,
AttributeAssertion *ava,
ID *ids,
ID *tmp )
{
MDB_dbi dbi;
int i;
int rc;
slap_mask_t mask;
struct berval prefix = {0, NULL};
struct berval *keys = NULL;
MatchingRule *mr;
Debug( LDAP_DEBUG_TRACE, "=> mdb_equality_candidates (%s)\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
if ( ava->aa_desc == slap_schema.si_ad_entryDN ) {
ID id;
rc = mdb_dn2id( op, rtxn, NULL, &ava->aa_value, &id, NULL, NULL, NULL );
if ( rc == LDAP_SUCCESS ) {
/* exactly one ID can match */
ids[0] = 1;
ids[1] = id;
}
if ( rc == MDB_NOTFOUND ) {
MDB_IDL_ZERO( ids );
rc = 0;
}
return rc;
}
MDB_IDL_ALL( ids );
rc = mdb_index_param( op->o_bd, ava->aa_desc, LDAP_FILTER_EQUALITY,
&dbi, &mask, &prefix );
if ( rc == LDAP_INAPPROPRIATE_MATCHING ) {
Debug( LDAP_DEBUG_ANY,
"<= mdb_equality_candidates: (%s) not indexed\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
return 0;
}
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"<= mdb_equality_candidates: (%s) "
"index_param failed (%d)\n",
ava->aa_desc->ad_cname.bv_val, rc, 0 );
return 0;
}
mr = ava->aa_desc->ad_type->sat_equality;
if( !mr ) {
return 0;
}
if( !mr->smr_filter ) {
return 0;
}
rc = (mr->smr_filter)(
LDAP_FILTER_EQUALITY,
mask,
ava->aa_desc->ad_type->sat_syntax,
mr,
&prefix,
&ava->aa_value,
&keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_equality_candidates: (%s, %s) "
"MR filter failed (%d)\n",
prefix.bv_val, ava->aa_desc->ad_cname.bv_val, rc );
return 0;
}
if( keys == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_equality_candidates: (%s) no keys\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
return 0;
}
for ( i= 0; keys[i].bv_val != NULL; i++ ) {
rc = mdb_key_read( op->o_bd, rtxn, dbi, &keys[i], tmp, NULL, 0 );
if( rc == MDB_NOTFOUND ) {
MDB_IDL_ZERO( ids );
rc = 0;
break;
} else if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_equality_candidates: (%s) "
"key read failed (%d)\n",
ava->aa_desc->ad_cname.bv_val, rc, 0 );
break;
}
if( MDB_IDL_IS_ZERO( tmp ) ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_equality_candidates: (%s) NULL\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
MDB_IDL_ZERO( ids );
break;
}
if ( i == 0 ) {
MDB_IDL_CPY( ids, tmp );
} else {
mdb_idl_intersection( ids, tmp );
}
if( MDB_IDL_IS_ZERO( ids ) )
break;
}
ber_bvarray_free_x( keys, op->o_tmpmemctx );
Debug( LDAP_DEBUG_TRACE,
"<= mdb_equality_candidates: id=%ld, first=%ld, last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
return( rc );
}
static int
presence_candidates(
Operation *op,
MDB_txn *rtxn,
AttributeDescription *desc,
ID *ids )
{
MDB_dbi dbi;
int rc;
slap_mask_t mask;
struct berval prefix = {0, NULL};
Debug( LDAP_DEBUG_TRACE, "=> mdb_presence_candidates (%s)\n",
desc->ad_cname.bv_val, 0, 0 );
MDB_IDL_ALL( ids );
if( desc == slap_schema.si_ad_objectClass ) {
return 0;
}
rc = mdb_index_param( op->o_bd, desc, LDAP_FILTER_PRESENT,
&dbi, &mask, &prefix );
if( rc == LDAP_INAPPROPRIATE_MATCHING ) {
/* not indexed */
Debug( LDAP_DEBUG_TRACE,
"<= mdb_presence_candidates: (%s) not indexed\n",
desc->ad_cname.bv_val, 0, 0 );
return 0;
}
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_presence_candidates: (%s) index_param "
"returned=%d\n",
desc->ad_cname.bv_val, rc, 0 );
return 0;
}
if( prefix.bv_val == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_presence_candidates: (%s) no prefix\n",
desc->ad_cname.bv_val, 0, 0 );
return -1;
}
rc = mdb_key_read( op->o_bd, rtxn, dbi, &prefix, ids, NULL, 0 );
if( rc == MDB_NOTFOUND ) {
MDB_IDL_ZERO( ids );
rc = 0;
} else if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_presense_candidates: (%s) "
"key read failed (%d)\n",
desc->ad_cname.bv_val, rc, 0 );
goto done;
}
Debug(LDAP_DEBUG_TRACE,
"<= mdb_presence_candidates: id=%ld first=%ld last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
done:
return rc;
}
static int
list_candidates(
Operation *op,
MDB_txn *rtxn,
Filter *flist,
int ftype,
ID *ids,
ID *tmp,
ID *save )
{
int rc = 0;
Filter *f;
Debug( LDAP_DEBUG_FILTER, "=> mdb_list_candidates 0x%x\n", ftype, 0, 0 );
for ( f = flist; f != NULL; f = f->f_next ) {
/* ignore precomputed scopes */
if ( f->f_choice == SLAPD_FILTER_COMPUTED &&
f->f_result == LDAP_SUCCESS ) {
continue;
}
MDB_IDL_ZERO( save );
rc = mdb_filter_candidates( op, rtxn, f, save, tmp,
save+MDB_IDL_UM_SIZE );
if ( rc != 0 ) {
if ( ftype == LDAP_FILTER_AND ) {
rc = 0;
continue;
}
break;
}
if ( ftype == LDAP_FILTER_AND ) {
if ( f == flist ) {
MDB_IDL_CPY( ids, save );
} else {
mdb_idl_intersection( ids, save );
}
if( MDB_IDL_IS_ZERO( ids ) )
break;
} else {
if ( f == flist ) {
MDB_IDL_CPY( ids, save );
} else {
mdb_idl_union( ids, save );
}
}
}
if( rc == LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_FILTER,
"<= mdb_list_candidates: id=%ld first=%ld last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
} else {
Debug( LDAP_DEBUG_FILTER,
"<= mdb_list_candidates: undefined rc=%d\n",
rc, 0, 0 );
}
return rc;
}
static int
comp_equality_candidates (
Operation *op,
MDB_txn *rtxn,
MatchingRuleAssertion *mra,
ComponentAssertion *ca,
ID *ids,
ID *tmp,
ID *stack)
{
MDB_dbi dbi;
int i;
int rc;
slap_mask_t mask;
struct berval prefix = {0, NULL};
struct berval *keys = NULL;
MatchingRule *mr = mra->ma_rule;
Syntax *sat_syntax;
ComponentReference* cr_list, *cr;
AttrInfo *ai;
MDB_IDL_ALL( ids );
if ( !ca->ca_comp_ref )
return 0;
ai = mdb_attr_mask( op->o_bd->be_private, mra->ma_desc );
if( ai ) {
cr_list = ai->ai_cr;
}
else {
return 0;
}
/* find a component reference to be indexed */
sat_syntax = ca->ca_ma_rule->smr_syntax;
for ( cr = cr_list ; cr ; cr = cr->cr_next ) {
if ( cr->cr_string.bv_len == ca->ca_comp_ref->cr_string.bv_len &&
strncmp( cr->cr_string.bv_val, ca->ca_comp_ref->cr_string.bv_val,cr->cr_string.bv_len ) == 0 )
break;
}
if ( !cr )
return 0;
rc = mdb_index_param( op->o_bd, mra->ma_desc, LDAP_FILTER_EQUALITY,
&dbi, &mask, &prefix );
if( rc != LDAP_SUCCESS ) {
return 0;
}
if( !mr ) {
return 0;
}
if( !mr->smr_filter ) {
return 0;
}
rc = (ca->ca_ma_rule->smr_filter)(
LDAP_FILTER_EQUALITY,
cr->cr_indexmask,
sat_syntax,
ca->ca_ma_rule,
&prefix,
&ca->ca_ma_value,
&keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
return 0;
}
if( keys == NULL ) {
return 0;
}
for ( i= 0; keys[i].bv_val != NULL; i++ ) {
rc = mdb_key_read( op->o_bd, rtxn, dbi, &keys[i], tmp, NULL, 0 );
if( rc == MDB_NOTFOUND ) {
MDB_IDL_ZERO( ids );
rc = 0;
break;
} else if( rc != LDAP_SUCCESS ) {
break;
}
if( MDB_IDL_IS_ZERO( tmp ) ) {
MDB_IDL_ZERO( ids );
break;
}
if ( i == 0 ) {
MDB_IDL_CPY( ids, tmp );
} else {
mdb_idl_intersection( ids, tmp );
}
if( MDB_IDL_IS_ZERO( ids ) )
break;
}
ber_bvarray_free_x( keys, op->o_tmpmemctx );
Debug( LDAP_DEBUG_TRACE,
"<= comp_equality_candidates: id=%ld, first=%ld, last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
return( rc );
}
static int
inequality_candidates(
Operation *op,
MDB_txn *rtxn,
AttributeAssertion *ava,
ID *ids,
ID *tmp,
int gtorlt )
{
MDB_dbi dbi;
int rc;
slap_mask_t mask;
struct berval prefix = {0, NULL};
struct berval *keys = NULL;
MatchingRule *mr;
MDB_cursor *cursor = NULL;
Debug( LDAP_DEBUG_TRACE, "=> mdb_inequality_candidates (%s)\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
MDB_IDL_ALL( ids );
rc = mdb_index_param( op->o_bd, ava->aa_desc, LDAP_FILTER_EQUALITY,
&dbi, &mask, &prefix );
if ( rc == LDAP_INAPPROPRIATE_MATCHING ) {
Debug( LDAP_DEBUG_ANY,
"<= mdb_inequality_candidates: (%s) not indexed\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
return 0;
}
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"<= mdb_inequality_candidates: (%s) "
"index_param failed (%d)\n",
ava->aa_desc->ad_cname.bv_val, rc, 0 );
return 0;
}
mr = ava->aa_desc->ad_type->sat_equality;
if( !mr ) {
return 0;
}
if( !mr->smr_filter ) {
return 0;
}
rc = (mr->smr_filter)(
LDAP_FILTER_EQUALITY,
mask,
ava->aa_desc->ad_type->sat_syntax,
mr,
&prefix,
&ava->aa_value,
&keys, op->o_tmpmemctx );
if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_inequality_candidates: (%s, %s) "
"MR filter failed (%d)\n",
prefix.bv_val, ava->aa_desc->ad_cname.bv_val, rc );
return 0;
}
if( keys == NULL ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_inequality_candidates: (%s) no keys\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
return 0;
}
MDB_IDL_ZERO( ids );
while(1) {
rc = mdb_key_read( op->o_bd, rtxn, dbi, &keys[0], tmp, &cursor, gtorlt );
if( rc == MDB_NOTFOUND ) {
rc = 0;
break;
} else if( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_inequality_candidates: (%s) "
"key read failed (%d)\n",
ava->aa_desc->ad_cname.bv_val, rc, 0 );
break;
}
if( MDB_IDL_IS_ZERO( tmp ) ) {
Debug( LDAP_DEBUG_TRACE,
"<= mdb_inequality_candidates: (%s) NULL\n",
ava->aa_desc->ad_cname.bv_val, 0, 0 );
break;
}
mdb_idl_union( ids, tmp );
if( op->ors_limit && op->ors_limit->lms_s_unchecked != -1 &&
MDB_IDL_N( ids ) >= (unsigned) op->ors_limit->lms_s_unchecked ) {
mdb_cursor_close( cursor );
break;
}
}
ber_bvarray_free_x( keys, op->o_tmpmemctx );
Debug( LDAP_DEBUG_TRACE,
"<= mdb_inequality_candidates: id=%ld, first=%ld, last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
return( rc );
}
static int search_candidates(
Operation *op,
SlapReply *rs,
Entry *e,
IdScopes *isc,
MDB_cursor *mci,
ID *ids,
ID *stack )
{
struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
int rc, depth = 1;
Filter *f, rf, xf, nf, sf;
AttributeAssertion aa_ref = ATTRIBUTEASSERTION_INIT;
AttributeAssertion aa_subentry = ATTRIBUTEASSERTION_INIT;
/*
* This routine takes as input a filter (user-filter)
* and rewrites it as follows:
* (&(scope=DN)[(objectClass=subentry)]
* (|[(objectClass=referral)](user-filter))
*/
Debug(LDAP_DEBUG_TRACE,
"search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
e->e_nname.bv_val, (long) e->e_id, op->oq_search.rs_scope );
f = op->oq_search.rs_filter;
/* If the user's filter uses objectClass=*,
* these clauses are redundant.
*/
if (!oc_filter(op->oq_search.rs_filter, 1, &depth)
&& !get_subentries_visibility(op)) {
if( !get_manageDSAit(op) && !get_domainScope(op) ) {
/* match referral objects */
struct berval bv_ref = BER_BVC( "referral" );
rf.f_choice = LDAP_FILTER_EQUALITY;
rf.f_ava = &aa_ref;
rf.f_av_desc = slap_schema.si_ad_objectClass;
rf.f_av_value = bv_ref;
rf.f_next = f;
xf.f_or = &rf;
xf.f_choice = LDAP_FILTER_OR;
xf.f_next = NULL;
f = &xf;
depth++;
}
}
if( get_subentries_visibility( op ) ) {
struct berval bv_subentry = BER_BVC( "subentry" );
sf.f_choice = LDAP_FILTER_EQUALITY;
sf.f_ava = &aa_subentry;
sf.f_av_desc = slap_schema.si_ad_objectClass;
sf.f_av_value = bv_subentry;
sf.f_next = f;
nf.f_choice = LDAP_FILTER_AND;
nf.f_and = &sf;
nf.f_next = NULL;
f = &nf;
depth++;
}
/* Allocate IDL stack, plus 1 more for former tmp */
if ( depth+1 > mdb->mi_search_stack_depth ) {
stack = ch_malloc( (depth + 1) * MDB_IDL_UM_SIZE * sizeof( ID ) );
}
if( op->ors_deref & LDAP_DEREF_SEARCHING ) {
rc = search_aliases( op, rs, e->e_id, isc, mci, stack );
} else {
rc = LDAP_SUCCESS;
}
if ( rc == LDAP_SUCCESS ) {
rc = mdb_filter_candidates( op, isc->mt, f, ids,
stack, stack+MDB_IDL_UM_SIZE );
}
if ( depth+1 > mdb->mi_search_stack_depth ) {
ch_free( stack );
}
if( rc ) {
Debug(LDAP_DEBUG_TRACE,
"mdb_search_candidates: failed (rc=%d)\n",
rc, NULL, NULL );
} else {
Debug(LDAP_DEBUG_TRACE,
"mdb_search_candidates: id=%ld first=%ld last=%ld\n",
(long) ids[0],
(long) MDB_IDL_FIRST(ids),
(long) MDB_IDL_LAST(ids) );
}
return rc;
}
/* Find each id in ids that is a child of base and move it to res.
*/
int
mdb_idscope(
Operation *op,
MDB_txn *txn,
ID base,
ID *ids,
ID *res )
{
struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
MDB_dbi dbi = mdb->mi_dn2id;
MDB_val key, data;
MDB_cursor *cursor;
ID ida, id, cid = 0, ci0 = 0, idc = 0;
char *ptr;
int rc, copy;
key.mv_size = sizeof(ID);
MDB_IDL_ZERO( res );
rc = mdb_cursor_open( txn, dbi, &cursor );
if ( rc ) return rc;
ida = mdb_idl_first( ids, &cid );
/* Don't bother moving out of ids if it's a range */
if (!MDB_IDL_IS_RANGE(ids)) {
idc = ids[0];
ci0 = cid;
}
while (ida != NOID) {
copy = 1;
id = ida;
while (id) {
key.mv_data = &id;
rc = mdb_cursor_get( cursor, &key, &data, MDB_SET );
if ( rc ) {
/* not found, drop this from ids */
copy = 0;
break;
}
ptr = data.mv_data;
ptr += data.mv_size - sizeof(ID);
memcpy( &id, ptr, sizeof(ID) );
if ( id == base ) {
if ( res[0] >= MDB_IDL_DB_SIZE-1 ) {
/* too many aliases in scope. Fallback to range */
MDB_IDL_RANGE( res, MDB_IDL_FIRST( ids ), MDB_IDL_LAST( ids ));
goto leave;
}
res[0]++;
res[res[0]] = ida;
copy = 0;
break;
}
if ( op->ors_scope == LDAP_SCOPE_ONELEVEL )
break;
}
if (idc) {
if (copy) {
if (ci0 != cid)
ids[ci0] = ids[cid];
ci0++;
} else
idc--;
}
ida = mdb_idl_next( ids, &cid );
}
if (!MDB_IDL_IS_RANGE( ids ))
ids[0] = idc;
leave:
mdb_cursor_close( cursor );
return rc;
}
/*
* idl_union - return a = a union b
*/
int
mdb_idl_union(
ID *a,
ID *b )
{
ID ida, idb;
ID cursora = 0, cursorb = 0, cursorc;
if ( MDB_IDL_IS_ZERO( b ) ) {
return 0;
}
if ( MDB_IDL_IS_ZERO( a ) ) {
MDB_IDL_CPY( a, b );
return 0;
}
if ( MDB_IDL_IS_RANGE( a ) || MDB_IDL_IS_RANGE(b) ) {
over: ida = IDL_MIN( MDB_IDL_FIRST(a), MDB_IDL_FIRST(b) );
idb = IDL_MAX( MDB_IDL_LAST(a), MDB_IDL_LAST(b) );
a[0] = NOID;
a[1] = ida;
a[2] = idb;
return 0;
}
ida = mdb_idl_first( a, &cursora );
idb = mdb_idl_first( b, &cursorb );
cursorc = b[0];
/* The distinct elements of a are cat'd to b */
while( ida != NOID || idb != NOID ) {
if ( ida < idb ) {
if( ++cursorc > MDB_IDL_UM_MAX ) {
goto over;
}
b[cursorc] = ida;
ida = mdb_idl_next( a, &cursora );
} else {
if ( ida == idb )
ida = mdb_idl_next( a, &cursora );
idb = mdb_idl_next( b, &cursorb );
}
}
/* b is copied back to a in sorted order */
a[0] = cursorc;
cursora = 1;
cursorb = 1;
cursorc = b[0]+1;
while (cursorb <= b[0] || cursorc <= a[0]) {
if (cursorc > a[0])
idb = NOID;
else
idb = b[cursorc];
if (cursorb <= b[0] && b[cursorb] < idb)
a[cursora++] = b[cursorb++];
else {
a[cursora++] = idb;
cursorc++;
}
}
return 0;
}
/*
* idl_intersection - return a = a intersection b
*/
int
mdb_idl_intersection(
ID *a,
ID *b )
{
ID ida, idb;
ID idmax, idmin;
ID cursora = 0, cursorb = 0, cursorc;
int swap = 0;
if ( MDB_IDL_IS_ZERO( a ) || MDB_IDL_IS_ZERO( b ) ) {
a[0] = 0;
return 0;
}
idmin = IDL_MAX( MDB_IDL_FIRST(a), MDB_IDL_FIRST(b) );
idmax = IDL_MIN( MDB_IDL_LAST(a), MDB_IDL_LAST(b) );
if ( idmin > idmax ) {
a[0] = 0;
return 0;
} else if ( idmin == idmax ) {
a[0] = 1;
a[1] = idmin;
return 0;
}
if ( MDB_IDL_IS_RANGE( a ) ) {
if ( MDB_IDL_IS_RANGE(b) ) {
/* If both are ranges, just shrink the boundaries */
a[1] = idmin;
a[2] = idmax;
return 0;
} else {
/* Else swap so that b is the range, a is a list */
ID *tmp = a;
a = b;
b = tmp;
swap = 1;
}
}
/* If a range completely covers the list, the result is
* just the list. If idmin to idmax is contiguous, just
* turn it into a range.
*/
if ( MDB_IDL_IS_RANGE( b )
&& MDB_IDL_RANGE_FIRST( b ) <= MDB_IDL_RANGE_FIRST( a )
&& MDB_IDL_RANGE_LAST( b ) >= MDB_IDL_RANGE_LAST( a ) ) {
if (idmax - idmin + 1 == a[0])
{
a[0] = NOID;
a[1] = idmin;
a[2] = idmax;
}
goto done;
}
/* Fine, do the intersection one element at a time.
* First advance to idmin in both IDLs.
*/
cursora = cursorb = idmin;
ida = mdb_idl_first( a, &cursora );
idb = mdb_idl_first( b, &cursorb );
cursorc = 0;
while( ida <= idmax || idb <= idmax ) {
if( ida == idb ) {
a[++cursorc] = ida;
ida = mdb_idl_next( a, &cursora );
idb = mdb_idl_next( b, &cursorb );
} else if ( ida < idb ) {
ida = mdb_idl_next( a, &cursora );
} else {
idb = mdb_idl_next( b, &cursorb );
}
}
a[0] = cursorc;
done:
if (swap)
MDB_IDL_CPY( b, a );
return 0;
}
