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openldap/servers/slapd/back-bdb/search.c
Hallvard Furuseth 1fbbc11811 Fix LBER_ERROR vs. -1 confusion.
2003-01-19 13:10:17 +00:00

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/* search.c - search operation */
/* $OpenLDAP$ */
/*
* Copyright 1998-2003 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 "idl.h"
#include "external.h"
static int base_candidate(
BackendDB *be,
Entry *e,
ID *ids );
static int search_candidates(
BackendDB *be,
Operation *op,
Entry *e,
Filter *filter,
int scope,
int deref,
ID *ids );
static void send_pagerequest_response(
Connection *conn,
Operation *op,
ID lastid,
int nentries,
int tentries );
int
bdb_search(
BackendDB *be,
Connection *conn,
Operation *op,
struct berval *base,
struct berval *nbase,
int scope,
int deref,
int slimit,
int tlimit,
Filter *filter,
struct berval *filterstr,
AttributeName *attrs,
int attrsonly )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
const char *text = NULL;
time_t stoptime;
ID id, cursor;
ID candidates[BDB_IDL_UM_SIZE];
Entry *e = NULL;
BerVarray v2refs = NULL;
Entry *matched = NULL;
struct berval realbase = { 0, NULL };
int nentries = 0;
int manageDSAit;
int pagedresults;
int tentries = 0;
ID lastid = NOID;
#ifdef LDAP_CLIENT_UPDATE
Filter lcupf, csnfnot, csnfeq, csnfand, csnfge;
AttributeAssertion aa_ge, aa_eq;
int entry_count = 0;
struct berval entrycsn_bv = { 0, NULL };
struct berval latest_entrycsn_bv = { 0, NULL };
#endif /* LDAP_CLIENT_UPDATE */
struct slap_limits_set *limit = NULL;
int isroot = 0;
u_int32_t locker;
DB_LOCK lock;
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ENTRY, "bdb_back_search\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_back_search\n",
0, 0, 0);
#endif
#ifdef LDAP_CLIENT_UPDATE
if ( op->o_clientupdate_type & SLAP_LCUP_PERSIST ) {
bdb_add_psearch_spec( be, conn, op, base, base, scope,
deref, slimit, tlimit, filter, filterstr, attrs, attrsonly );
return LDAP_SUCCESS;
}
#endif
manageDSAit = get_manageDSAit( op );
pagedresults = get_pagedresults( op );
rc = LOCK_ID (bdb->bi_dbenv, &locker );
switch(rc) {
case 0:
break;
default:
send_ldap_result( conn, op, rc=LDAP_OTHER,
NULL, "internal error", NULL, NULL );
return rc;
}
if ( nbase->bv_len == 0 ) {
/* DIT root special case */
e = (Entry *) &slap_entry_root;
rc = 0;
} else
#ifdef BDB_ALIASES
/* get entry with reader lock */
if ( deref & LDAP_DEREF_FINDING ) {
e = deref_dn_r( be, nbase-, &err, &matched, &text );
} else
#endif
{
dn2entry_retry:
rc = bdb_dn2entry_r( be, NULL, nbase, &e, &matched, 0, locker, &lock );
}
switch(rc) {
case DB_NOTFOUND:
case 0:
break;
case LDAP_BUSY:
if (e != NULL) {
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
}
if (matched != NULL) {
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, matched, &lock);
}
send_ldap_result( conn, op, LDAP_BUSY,
NULL, "ldap server busy", NULL, NULL );
LOCK_ID_FREE (bdb->bi_dbenv, locker );
return LDAP_BUSY;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto dn2entry_retry;
default:
if (e != NULL) {
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
}
if (matched != NULL) {
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, matched, &lock);
}
send_ldap_result( conn, op, rc=LDAP_OTHER,
NULL, "internal error", NULL, NULL );
LOCK_ID_FREE (bdb->bi_dbenv, locker );
return rc;
}
if ( e == NULL ) {
struct berval matched_dn = { 0, NULL };
BerVarray refs = NULL;
if ( matched != NULL ) {
BerVarray erefs;
ber_dupbv( &matched_dn, &matched->e_name );
erefs = is_entry_referral( matched )
? get_entry_referrals( be, conn, op, matched )
: NULL;
bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, matched, &lock);
matched = NULL;
if( erefs ) {
refs = referral_rewrite( erefs, &matched_dn,
base, scope );
ber_bvarray_free( erefs );
}
} else {
refs = referral_rewrite( default_referral,
NULL, base, scope );
}
send_ldap_result( conn, op, rc=LDAP_REFERRAL ,
matched_dn.bv_val, text, refs, NULL );
LOCK_ID_FREE (bdb->bi_dbenv, locker );
if ( refs ) ber_bvarray_free( refs );
if ( matched_dn.bv_val ) ber_memfree( matched_dn.bv_val );
return rc;
}
if (!manageDSAit && e != &slap_entry_root && is_entry_referral( e ) ) {
/* entry is a referral, don't allow add */
struct berval matched_dn;
BerVarray erefs, refs;
ber_dupbv( &matched_dn, &e->e_name );
erefs = get_entry_referrals( be, conn, op, e );
refs = NULL;
bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
e = NULL;
if( erefs ) {
refs = referral_rewrite( erefs, &matched_dn,
base, scope );
ber_bvarray_free( erefs );
}
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: entry is referral\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "bdb_search: entry is referral\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op, LDAP_REFERRAL,
matched_dn.bv_val,
refs ? NULL : "bad referral object",
refs, NULL );
LOCK_ID_FREE (bdb->bi_dbenv, locker );
ber_bvarray_free( refs );
ber_memfree( matched_dn.bv_val );
return 1;
}
/* if not root, get appropriate limits */
if ( be_isroot( be, &op->o_ndn ) ) {
isroot = 1;
} else {
( void ) get_limits( be, &op->o_ndn, &limit );
}
/* The time/size limits come first because they require very little
* effort, so there's no chance the candidates are selected and then
* the request is not honored only because of time/size constraints */
/* if no time limit requested, use soft limit (unless root!) */
if ( isroot ) {
if ( tlimit == 0 ) {
tlimit = -1; /* allow root to set no limit */
}
if ( slimit == 0 ) {
slimit = -1;
}
} else {
/* if no limit is required, use soft limit */
if ( tlimit <= 0 ) {
tlimit = limit->lms_t_soft;
/* if requested limit higher than hard limit, abort */
} else if ( tlimit > limit->lms_t_hard ) {
/* no hard limit means use soft instead */
if ( limit->lms_t_hard == 0
&& limit->lms_t_soft > -1
&& tlimit > limit->lms_t_soft ) {
tlimit = limit->lms_t_soft;
/* positive hard limit means abort */
} else if ( limit->lms_t_hard > 0 ) {
send_search_result( conn, op,
LDAP_ADMINLIMIT_EXCEEDED,
NULL, NULL, NULL, NULL, 0 );
rc = 0;
goto done;
}
/* negative hard limit means no limit */
}
/* if no limit is required, use soft limit */
if ( slimit <= 0 ) {
if ( pagedresults && limit->lms_s_pr != 0 ) {
slimit = limit->lms_s_pr;
} else {
slimit = limit->lms_s_soft;
}
/* if requested limit higher than hard limit, abort */
} else if ( slimit > limit->lms_s_hard ) {
/* no hard limit means use soft instead */
if ( limit->lms_s_hard == 0
&& limit->lms_s_soft > -1
&& slimit > limit->lms_s_soft ) {
slimit = limit->lms_s_soft;
/* positive hard limit means abort */
} else if ( limit->lms_s_hard > 0 ) {
send_search_result( conn, op,
LDAP_ADMINLIMIT_EXCEEDED,
NULL, NULL, NULL, NULL, 0 );
rc = 0;
goto done;
}
/* negative hard limit means no limit */
}
}
/* compute it anyway; root does not use it */
stoptime = op->o_time + tlimit;
/* select candidates */
if ( scope == LDAP_SCOPE_BASE ) {
rc = base_candidate( be, e, candidates );
} else {
BDB_IDL_ALL( bdb, candidates );
rc = search_candidates( be, op, e, filter,
scope, deref, candidates );
}
/* need normalized dn below */
ber_dupbv( &realbase, &e->e_nname );
/* start cursor at beginning of candidates.
*/
cursor = 0;
if ( e != &slap_entry_root ) {
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
}
e = NULL;
if ( candidates[0] == 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: no candidates\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "bdb_search: no candidates\n",
0, 0, 0 );
#endif
send_search_result( conn, op,
LDAP_SUCCESS,
NULL, NULL, NULL, NULL, 0 );
rc = 1;
goto done;
}
/* if not root and candidates exceed to-be-checked entries, abort */
if ( !isroot && limit->lms_s_unchecked != -1 ) {
if ( BDB_IDL_N(candidates) > (unsigned) limit->lms_s_unchecked ) {
send_search_result( conn, op,
LDAP_ADMINLIMIT_EXCEEDED,
NULL, NULL, NULL, NULL, 0 );
rc = 1;
goto done;
}
}
if ( isroot || !limit->lms_s_pr_hide ) {
tentries = BDB_IDL_N(candidates);
}
if ( pagedresults ) {
if ( op->o_pagedresults_state.ps_cookie == 0 ) {
id = 0;
} else {
if ( op->o_pagedresults_size == 0 ) {
send_search_result( conn, op, LDAP_SUCCESS,
NULL, "search abandoned by pagedResult size=0",
NULL, NULL, 0);
goto done;
}
for ( id = bdb_idl_first( candidates, &cursor );
id != NOID && id <= (ID)( op->o_pagedresults_state.ps_cookie );
id = bdb_idl_next( candidates, &cursor ) );
}
if ( cursor == NOID ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: no paged results candidates\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: no paged results candidates\n",
0, 0, 0 );
#endif
send_pagerequest_response( conn, op, lastid, 0, 0 );
rc = 1;
goto done;
}
goto loop_begin;
}
#ifdef LDAP_CLIENT_UPDATE
if ( op->o_clientupdate_type & SLAP_LCUP_SYNC ) {
lcupf.f_choice = LDAP_FILTER_AND;
lcupf.f_and = &csnfnot;
lcupf.f_next = NULL;
csnfnot.f_choice = LDAP_FILTER_NOT;
csnfnot.f_not = &csnfeq;
csnfnot.f_next = &csnfand;
csnfeq.f_choice = LDAP_FILTER_EQUALITY;
csnfeq.f_ava = &aa_eq;
csnfeq.f_av_desc = slap_schema.si_ad_entryCSN;
ber_dupbv( &csnfeq.f_av_value, &op->o_clientupdate_state );
csnfand.f_choice = LDAP_FILTER_AND;
csnfand.f_and = &csnfge;
csnfand.f_next = NULL;
csnfge.f_choice = LDAP_FILTER_GE;
csnfge.f_ava = &aa_ge;
csnfge.f_av_desc = slap_schema.si_ad_entryCSN;
ber_dupbv( &csnfge.f_av_value, &op->o_clientupdate_state );
csnfge.f_next = filter;
}
#endif /* LDAP_CLIENT_UPDATE */
for ( id = bdb_idl_first( candidates, &cursor );
id != NOID;
id = bdb_idl_next( candidates, &cursor ) )
{
int scopeok = 0;
loop_begin:
/* check for abandon */
if ( op->o_abandon ) {
rc = 0;
goto done;
}
/* check time limit */
if ( tlimit != -1 && slap_get_time() > stoptime ) {
send_search_result( conn, op, rc = LDAP_TIMELIMIT_EXCEEDED,
NULL, NULL, v2refs, NULL, nentries );
goto done;
}
id2entry_retry:
/* get the entry with reader lock */
rc = bdb_id2entry_r( be, NULL, id, &e, locker, &lock );
if (rc == LDAP_BUSY) {
send_ldap_result( conn, op, rc=LDAP_BUSY,
NULL, "ldap server busy", NULL, NULL );
goto done;
} else if ( rc == DB_LOCK_DEADLOCK || rc == DB_LOCK_NOTGRANTED ) {
goto id2entry_retry;
}
if ( e == NULL ) {
if( !BDB_IDL_IS_RANGE(candidates) ) {
/* only complain for non-range IDLs */
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: candidate %ld not found\n", (long) id, 0, 0);
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: candidate %ld not found\n",
(long) id, 0, 0 );
#endif
}
goto loop_continue;
}
#ifdef BDB_SUBENTRIES
if ( is_entry_subentry( e ) ) {
if( scope != LDAP_SCOPE_BASE ) {
if(!get_subentries_visibility( op )) {
/* only subentries are visible */
goto loop_continue;
}
} else if ( get_subentries( op ) &&
!get_subentries_visibility( op ))
{
/* only subentries are visible */
goto loop_continue;
}
} else if ( get_subentries_visibility( op )) {
/* only subentries are visible */
goto loop_continue;
}
#endif
#ifdef BDB_ALIASES
if ( deref & LDAP_DEREF_SEARCHING && is_entry_alias( e ) ) {
Entry *matched;
int err;
const char *text;
e = deref_entry_r( be, e, &err, &matched, &text );
if( e == NULL ) {
e = matched;
goto loop_continue;
}
if( e->e_id == id ) {
/* circular loop */
goto loop_continue;
}
/* need to skip alias which deref into scope */
if( scope & LDAP_SCOPE_ONELEVEL ) {
struct berval pdn;
dnParent( &e->e_nname, &pdn ):
if ( ber_bvcmp( pdn, &realbase ) ) {
goto loop_continue;
}
} else if ( dnIsSuffix( &e->e_nname, &realbase ) ) {
/* alias is within scope */
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: \"%s\" in subtree\n", e->edn, 0, 0);
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: \"%s\" in subtree\n",
e->e_dn, 0, 0 );
#endif
goto loop_continue;
}
scopeok = 1;
}
#endif
/*
* if it's a referral, add it to the list of referrals. only do
* this for non-base searches, and don't check the filter
* explicitly here since it's only a candidate anyway.
*/
if ( !manageDSAit && scope != LDAP_SCOPE_BASE &&
is_entry_referral( e ) )
{
struct berval dn;
/* check scope */
if ( !scopeok && scope == LDAP_SCOPE_ONELEVEL ) {
if ( !be_issuffix( be, &e->e_nname ) ) {
dnParent( &e->e_nname, &dn );
scopeok = dn_match( &dn, &realbase );
} else {
scopeok = (realbase.bv_len == 0);
}
} else if ( !scopeok && scope == LDAP_SCOPE_SUBTREE ) {
scopeok = dnIsSuffix( &e->e_nname, &realbase );
} else {
scopeok = 1;
}
if( scopeok ) {
BerVarray erefs = get_entry_referrals(
be, conn, op, e );
BerVarray refs = referral_rewrite( erefs,
&e->e_name, NULL,
scope == LDAP_SCOPE_SUBTREE
? LDAP_SCOPE_SUBTREE
: LDAP_SCOPE_BASE );
send_search_reference( be, conn, op,
e, refs, NULL, &v2refs );
ber_bvarray_free( refs );
} else {
#ifdef NEW_LOGGING
LDAP_LOG(OPERATION, DETAIL2,
"bdb_search: candidate referral %ld scope not okay\n",
id, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: candidate referral %ld scope not okay\n",
id, 0, 0 );
#endif
}
goto loop_continue;
}
/* if it matches the filter and scope, send it */
#ifdef LDAP_CLIENT_UPDATE
if ( op->o_clientupdate_type & SLAP_LCUP_SYNC ) {
rc = test_filter( be, conn, op, e, &lcupf );
} else
#endif /* LDAP_CLIENT_UPDATE */
{
rc = test_filter( be, conn, op, e, filter );
}
if ( rc == LDAP_COMPARE_TRUE ) {
struct berval dn;
/* check scope */
if ( !scopeok && scope == LDAP_SCOPE_ONELEVEL ) {
if ( be_issuffix( be, &e->e_nname ) ) {
scopeok = (realbase.bv_len == 0);
} else {
dnParent( &e->e_nname, &dn );
scopeok = dn_match( &dn, &realbase );
}
} else if ( !scopeok && scope == LDAP_SCOPE_SUBTREE ) {
scopeok = dnIsSuffix( &e->e_nname, &realbase );
} else {
scopeok = 1;
}
if ( scopeok ) {
/* check size limit */
if ( --slimit == -1 ) {
bdb_cache_return_entry_r( bdb->bi_dbenv,
&bdb->bi_cache, e, &lock );
e = NULL;
send_search_result( conn, op,
rc = LDAP_SIZELIMIT_EXCEEDED, NULL, NULL,
v2refs, NULL, nentries );
goto done;
}
if ( pagedresults ) {
if ( nentries >= op->o_pagedresults_size ) {
send_pagerequest_response( conn, op, lastid, nentries, tentries );
goto done;
}
lastid = id;
}
if (e) {
int result;
#if 0 /* noop is masked SLAP_CTRL_UPDATE */
if( op->o_noop ) {
result = 0;
} else
#endif
{
#ifdef LDAP_CLIENT_UPDATE
if ( op->o_clientupdate_type & SLAP_LCUP_SYNC ) {
Attribute* a;
int ret;
int res;
const char *text = NULL;
LDAPControl *ctrls[2];
char berbuf[LBER_ELEMENT_SIZEOF];
BerElement *ber = (BerElement *)berbuf;
ber_init2( ber, 0, LBER_USE_DER );
entry_count++;
ctrls[0] = ch_malloc ( sizeof ( LDAPControl ) );
ctrls[1] = NULL;
if ( entry_count % op->o_clientupdate_interval == 0 ) {
/* Send cookie */
for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
AttributeDescription *desc = a->a_desc;
if ( desc == slap_schema.si_ad_entryCSN ) {
ber_dupbv( &entrycsn_bv, &a->a_vals[0] );
if ( latest_entrycsn_bv.bv_val == NULL ) {
ber_dupbv( &latest_entrycsn_bv, &entrycsn_bv );
} else {
res = value_match( &ret, desc,
desc->ad_type->sat_ordering,
SLAP_MR_ASSERTION_SYNTAX_MATCH,
&entrycsn_bv, &latest_entrycsn_bv, &text );
if ( res != LDAP_SUCCESS ) {
ret = 0;
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: value_match failed\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: value_match failed\n",
0, 0, 0 );
#endif
}
if ( ret > 0 ) {
ch_free( latest_entrycsn_bv.bv_val );
latest_entrycsn_bv.bv_val = NULL;
ber_dupbv( &latest_entrycsn_bv,
&entrycsn_bv );
}
}
}
}
ber_printf( ber,
"{bb{sON}N}",
SLAP_LCUP_STATE_UPDATE_FALSE,
SLAP_LCUP_ENTRY_DELETED_FALSE,
LCUP_COOKIE_OID, &entrycsn_bv );
ch_free( entrycsn_bv.bv_val );
entrycsn_bv.bv_val = NULL;
} else {
/* Do not send cookie */
ber_printf( ber,
"{bbN}",
SLAP_LCUP_STATE_UPDATE_FALSE,
SLAP_LCUP_ENTRY_DELETED_FALSE );
}
ctrls[0]->ldctl_oid = LDAP_CONTROL_ENTRY_UPDATE;
ctrls[0]->ldctl_iscritical = op->o_clientupdate;
ret = ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 );
if ( ret < 0 ) {
ber_free_buf( ber );
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: ber_flatten2 failed\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: ber_flatten2 failed\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op, rc=LDAP_OTHER,
NULL, "internal error", NULL, NULL );
goto done;
}
result = send_search_entry( be, conn, op,
e, attrs, attrsonly, ctrls);
ber_free_buf( ber );
ch_free( ctrls[0] );
} else
#endif /* LDAP_CLIENT_UPDATE */
{
result = send_search_entry( be, conn, op,
e, attrs, attrsonly, NULL);
}
}
switch (result) {
case 0: /* entry sent ok */
nentries++;
break;
case 1: /* entry not sent */
break;
case -1: /* connection closed */
bdb_cache_return_entry_r(bdb->bi_dbenv,
&bdb->bi_cache, e, &lock);
e = NULL;
rc = LDAP_OTHER;
goto done;
}
}
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: %ld scope not okay\n", (long) id, 0, 0);
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: %ld scope not okay\n",
(long) id, 0, 0 );
#endif
}
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: %ld does match filter\n", (long) id, 0, 0);
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_search: %ld does match filter\n",
(long) id, 0, 0 );
#endif
}
loop_continue:
if( e != NULL ) {
/* free reader lock */
bdb_cache_return_entry_r( bdb->bi_dbenv,
&bdb->bi_cache, e , &lock);
e = NULL;
}
ldap_pvt_thread_yield();
}
#ifdef LDAP_CLIENT_UPDATE
if ( op->o_clientupdate_type & SLAP_LCUP_SYNC ) {
int ret;
LDAPControl *ctrls[2];
char berbuf[LBER_ELEMENT_SIZEOF];
BerElement *ber = (BerElement *)berbuf;
ber_init2( ber, NULL, LBER_USE_DER );
ctrls[0] = ch_malloc ( sizeof ( LDAPControl ) );
ctrls[1] = NULL;
ber_printf( ber, "{sO", LCUP_COOKIE_OID, &latest_entrycsn_bv );
ber_printf( ber, "N}" );
ctrls[0]->ldctl_oid = LDAP_CONTROL_CLIENT_UPDATE_DONE;
ctrls[0]->ldctl_iscritical = op->o_clientupdate;
ret = ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 );
if ( ret < 0 ) {
ber_free_buf( ber );
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_search: ber_flatten2 failed\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "bdb_search: ber_flatten2 failed\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op, rc=LDAP_OTHER,
NULL, "internal error", NULL, NULL );
goto done;
}
send_search_result( conn, op,
v2refs == NULL ? LDAP_SUCCESS : LDAP_REFERRAL,
NULL, NULL, v2refs, ctrls, nentries );
ch_free( latest_entrycsn_bv.bv_val );
latest_entrycsn_bv.bv_val = NULL;
ch_free( ctrls[0] );
ber_free_buf( ber );
} else
#endif /* LDAP_CLIENT_UPDATE */
{
send_search_result( conn, op,
v2refs == NULL ? LDAP_SUCCESS : LDAP_REFERRAL,
NULL, NULL, v2refs, NULL, nentries );
}
rc = 0;
done:
if( e != NULL ) {
/* free reader lock */
bdb_cache_return_entry_r ( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
}
#ifdef LDAP_CLIENT_UPDATE
if ( op->o_clientupdate_type & SLAP_LCUP_SYNC ) {
if ( csnfeq.f_ava != NULL && csnfeq.f_av_value.bv_val != NULL ) {
ch_free( csnfeq.f_av_value.bv_val );
}
if ( csnfge.f_ava != NULL && csnfge.f_av_value.bv_val != NULL ) {
ch_free( csnfge.f_av_value.bv_val );
}
}
#endif /* LDAP_CLIENT_UPDATE */
LOCK_ID_FREE (bdb->bi_dbenv, locker );
if( v2refs ) ber_bvarray_free( v2refs );
if( realbase.bv_val ) ch_free( realbase.bv_val );
return rc;
}
static int base_candidate(
BackendDB *be,
Entry *e,
ID *ids )
{
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ENTRY,
"base_candidate: base: \"%s\" (0x%08lx)\n", e->e_dn, (long) e->e_id, 0);
#else
Debug(LDAP_DEBUG_ARGS, "base_candidates: base: \"%s\" (0x%08lx)\n",
e->e_dn, (long) e->e_id, 0);
#endif
ids[0] = 1;
ids[1] = e->e_id;
return 0;
}
/* Look for "objectClass Present" in this filter.
* Also count depth of filter tree while we're at it.
*/
static int oc_filter(
Filter *f,
int cur,
int *max
)
{
int rc = 0;
if( cur > *max ) *max = cur;
switch(f->f_choice) {
case LDAP_FILTER_PRESENT:
if (f->f_desc == slap_schema.si_ad_objectClass) {
rc = 1;
}
break;
case LDAP_FILTER_AND:
case LDAP_FILTER_OR:
cur++;
for (f=f->f_and; f; f=f->f_next) {
(void) oc_filter(f, cur, max);
}
break;
default:
break;
}
return rc;
}
static void search_stack_free( void *key, void *data)
{
ch_free(data);
}
static void *search_stack(
BackendDB *be,
Operation *op
)
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
void *ret = NULL;
if ( op->o_threadctx ) {
ldap_pvt_thread_pool_getkey( op->o_threadctx, search_stack,
&ret, NULL );
} else {
ret = bdb->bi_search_stack;
}
if ( !ret ) {
ret = ch_malloc( bdb->bi_search_stack_depth * BDB_IDL_UM_SIZE * sizeof( ID ) );
if ( op->o_threadctx ) {
ldap_pvt_thread_pool_setkey( op->o_threadctx, search_stack,
ret, search_stack_free );
} else {
bdb->bi_search_stack = ret;
}
}
return ret;
}
static int search_candidates(
BackendDB *be,
Operation *op,
Entry *e,
Filter *filter,
int scope,
int deref,
ID *ids )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc, depth = 1;
Filter f, scopef, rf, xf;
ID *stack;
AttributeAssertion aa_ref;
#ifdef BDB_SUBENTRIES
Filter sf;
AttributeAssertion aa_subentry;
#endif
#ifdef BDB_ALIASES
Filter af;
AttributeAssertion aa_alias;
#endif
/*
* This routine takes as input a filter (user-filter)
* and rewrites it as follows:
* (&(scope=DN)[(objectClass=subentry)]
* (|[(objectClass=referral)(objectClass=alias)](user-filter))
*/
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ENTRY,
"search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
e->e_dn, (long) e->e_id, scope);
#else
Debug(LDAP_DEBUG_TRACE,
"search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
e->e_dn, (long) e->e_id, scope );
#endif
xf.f_or = filter;
xf.f_choice = LDAP_FILTER_OR;
xf.f_next = NULL;
/* If the user's filter uses objectClass=*,
* these clauses are redundant.
*/
if (!oc_filter(filter, 1, &depth) && !get_subentries_visibility(op) ) {
if( !get_manageDSAit(op) ) { /* match referrals */
struct berval bv_ref = { sizeof("referral")-1, "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 = xf.f_or;
xf.f_or = &rf;
}
#ifdef BDB_ALIASES
if( deref & LDAP_DEREF_SEARCHING ) { /* match aliases */
struct berval bv_alias = { sizeof("alias")-1, "alias" };
af.f_choice = LDAP_FILTER_EQUALITY;
af.f_ava = &aa_alias;
af.f_av_desc = slap_schema.si_ad_objectClass;
af.f_av_value = bv_alias;
af.f_next = xf.f_or;
xf.f_or = &af;
}
#endif
/* We added one of these clauses, filter depth increased */
if( xf.f_or != filter ) depth++;
}
f.f_next = NULL;
f.f_choice = LDAP_FILTER_AND;
f.f_and = &scopef;
scopef.f_choice = scope == LDAP_SCOPE_SUBTREE
? SLAPD_FILTER_DN_SUBTREE
: SLAPD_FILTER_DN_ONE;
scopef.f_dn = &e->e_nname;
scopef.f_next = xf.f_or == filter ? filter : &xf ;
/* Filter depth increased again, adding scope clause */
depth++;
#ifdef BDB_SUBENTRIES
if( get_subentries_visibility( op ) ) {
struct berval bv_subentry = { sizeof("SUBENTRY")-1, "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 = scopef.f_next;
scopef.f_next = &sf;
}
#endif
/* Allocate IDL stack, plus 1 more for former tmp */
if ( depth+1 > bdb->bi_search_stack_depth ) {
stack = ch_malloc( (depth + 1) * BDB_IDL_UM_SIZE * sizeof( ID ) );
} else {
stack = search_stack( be, op );
}
rc = bdb_filter_candidates( be, &f, ids, stack, stack+BDB_IDL_UM_SIZE );
if ( depth+1 > bdb->bi_search_stack_depth ) {
ch_free( stack );
}
if( rc ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"bdb_search_candidates: failed (rc=%d)\n", rc, 0, 0 );
#else
Debug(LDAP_DEBUG_TRACE,
"bdb_search_candidates: failed (rc=%d)\n",
rc, NULL, NULL );
#endif
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"bdb_search_candidates: id=%ld first=%ld last=%ld\n",
(long) ids[0], (long) BDB_IDL_FIRST(ids),
(long) BDB_IDL_LAST(ids));
#else
Debug(LDAP_DEBUG_TRACE,
"bdb_search_candidates: id=%ld first=%ld last=%ld\n",
(long) ids[0],
(long) BDB_IDL_FIRST(ids),
(long) BDB_IDL_LAST(ids) );
#endif
}
return rc;
}
static void
send_pagerequest_response(
Connection *conn,
Operation *op,
ID lastid,
int nentries,
int tentries )
{
LDAPControl ctrl, *ctrls[2];
char berbuf[LBER_ELEMENT_SIZEOF];
BerElement *ber = (BerElement *)berbuf;
struct berval cookie = { 0, NULL };
PagedResultsCookie respcookie;
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ENTRY,
"send_pagerequest_response: lastid: (0x%08lx) "
"nentries: (0x%081x)\n",
lastid, nentries, NULL );
#else
Debug(LDAP_DEBUG_ARGS, "send_pagerequest_response: lastid: (0x%08lx) "
"nentries: (0x%081x)\n", lastid, nentries, NULL );
#endif
ctrl.ldctl_value.bv_val = NULL;
ctrls[0] = &ctrl;
ctrls[1] = NULL;
ber_init2( ber, NULL, LBER_USE_DER );
respcookie = ( PagedResultsCookie )lastid;
conn->c_pagedresults_state.ps_cookie = respcookie;
cookie.bv_len = sizeof( respcookie );
cookie.bv_val = (char *)&respcookie;
/*
* FIXME: we should consider sending an estimate of the entries
* left, after appropriate security check is done
*/
ber_printf( ber, "{iO}", tentries, &cookie );
if ( ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 ) == -1 ) {
goto done;
}
ctrls[0]->ldctl_oid = LDAP_CONTROL_PAGEDRESULTS;
ctrls[0]->ldctl_iscritical = 0;
send_search_result( conn, op,
LDAP_SUCCESS,
NULL, NULL, NULL, ctrls, nentries );
done:
(void) ber_free_buf( ber );
}
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