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openldap/servers/slapd/back-ldap/search.c
Quanah Gibson-Mount f6ad222e41 Happy New Year!
2020-01-09 16:50:21 +00:00

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/* search.c - ldap backend search function */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2020 The OpenLDAP Foundation.
* Portions Copyright 1999-2003 Howard Chu.
* Portions Copyright 2000-2003 Pierangelo Masarati.
* 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>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by the Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
#include "slap.h"
#include "back-ldap.h"
#include "../../../libraries/liblber/lber-int.h"
#include "lutil.h"
static int
ldap_build_entry( Operation *op, LDAPMessage *e, Entry *ent,
struct berval *bdn, int remove_unknown_schema );
static ObjectClass *
oc_bvfind_undef_ex( struct berval *ocname, int flag )
{
ObjectClass *oc = oc_bvfind( ocname );
if ( oc || flag ) {
/* oc defined or remove-unknown-schema flag set */
return oc;
}
return oc_bvfind_undef( ocname );
}
/*
* replaces (&) with (objectClass=*) and (|) with (!(objectClass=*))
* as the best replacement for RFC 4526 absolute true/absolute false
* filters; the only difference (AFAIK) is that they require search
* access to objectClass.
*
* filter->bv_val may be alloc'd on the thread's slab, if equal to
* op->ors_filterstr.bv_val, or realloc'd on the thread's slab otherwise.
*/
static int
ldap_back_munge_filter(
Operation *op,
struct berval *filter )
{
char *ptr;
int gotit = 0;
Debug( LDAP_DEBUG_ARGS, "=> ldap_back_munge_filter \"%s\"\n",
filter->bv_val );
for ( ptr = strchr( filter->bv_val, '(' );
ptr;
ptr = strchr( ptr, '(' ) )
{
static struct berval
bv_t = BER_BVC( "(&)" ),
bv_f = BER_BVC( "(|)" ),
bv_T = BER_BVC( "(objectClass=*)" ),
bv_F = BER_BVC( "(!(objectClass=*))" );
struct berval *oldbv = NULL,
*newbv = NULL,
oldfilter = BER_BVNULL;
if ( ptr[2] != ')' ) {
ptr++;
continue;
}
switch ( ptr[1] ) {
case '&':
oldbv = &bv_t;
newbv = &bv_T;
break;
case '|':
oldbv = &bv_f;
newbv = &bv_F;
break;
default:
/* should be an error */
continue;
}
oldfilter = *filter;
filter->bv_len += newbv->bv_len - oldbv->bv_len;
if ( filter->bv_val == op->ors_filterstr.bv_val ) {
filter->bv_val = op->o_tmpalloc( filter->bv_len + 1,
op->o_tmpmemctx );
AC_MEMCPY( filter->bv_val, op->ors_filterstr.bv_val,
ptr - oldfilter.bv_val );
} else {
filter->bv_val = op->o_tmprealloc( filter->bv_val,
filter->bv_len + 1, op->o_tmpmemctx );
}
ptr = filter->bv_val + ( ptr - oldfilter.bv_val );
AC_MEMCPY( &ptr[ newbv->bv_len ],
&ptr[ oldbv->bv_len ],
oldfilter.bv_len - ( ptr - filter->bv_val ) - oldbv->bv_len + 1 );
AC_MEMCPY( ptr, newbv->bv_val, newbv->bv_len );
ptr += newbv->bv_len;
gotit++;
}
Debug( LDAP_DEBUG_ARGS, "<= ldap_back_munge_filter \"%s\" (%d)\n",
filter->bv_val, gotit );
return gotit;
}
int
ldap_back_search(
Operation *op,
SlapReply *rs )
{
ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
ldapconn_t *lc = NULL;
struct timeval tv;
time_t stoptime = (time_t)(-1);
LDAPMessage *res,
*e;
int rc = 0,
msgid;
struct berval match = BER_BVNULL,
filter = BER_BVNULL;
int i, x;
char **attrs = NULL;
int freetext = 0, filter_undef = 0;
int do_retry = 1, dont_retry = 0;
LDAPControl **ctrls = NULL;
char **references = NULL;
int remove_unknown_schema =
LDAP_BACK_OMIT_UNKNOWN_SCHEMA (li);
rs_assert_ready( rs );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia, we can set rs = non-entry */
if ( !ldap_back_dobind( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
return rs->sr_err;
}
/*
* FIXME: in case of values return filter, we might want
* to map attrs and maybe rewrite value
*/
if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
tv.tv_sec = op->ors_tlimit;
tv.tv_usec = 0;
stoptime = op->o_time + op->ors_tlimit;
} else {
LDAP_BACK_TV_SET( &tv );
}
i = 0;
if ( op->ors_attrs ) {
for ( ; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ )
/* just count attrs */ ;
}
x = 0;
if ( op->o_bd->be_extra_anlist ) {
for ( ; !BER_BVISNULL( &op->o_bd->be_extra_anlist[x].an_name ); x++ )
/* just count attrs */ ;
}
if ( i > 0 || x > 0 ) {
int j = 0;
attrs = op->o_tmpalloc( ( i + x + 1 )*sizeof( char * ),
op->o_tmpmemctx );
if ( attrs == NULL ) {
rs->sr_err = LDAP_NO_MEMORY;
rc = -1;
goto finish;
}
if ( i > 0 ) {
for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++, j++ ) {
attrs[ j ] = op->ors_attrs[i].an_name.bv_val;
}
}
if ( x > 0 ) {
for ( x = 0; !BER_BVISNULL( &op->o_bd->be_extra_anlist[x].an_name ); x++, j++ ) {
if ( op->o_bd->be_extra_anlist[x].an_desc &&
ad_inlist( op->o_bd->be_extra_anlist[x].an_desc, op->ors_attrs ) )
{
continue;
}
attrs[ j ] = op->o_bd->be_extra_anlist[x].an_name.bv_val;
}
}
attrs[ j ] = NULL;
}
ctrls = op->o_ctrls;
rc = ldap_back_controls_add( op, rs, lc, &ctrls );
if ( rc != LDAP_SUCCESS ) {
goto finish;
}
/* deal with <draft-zeilenga-ldap-t-f> filters */
filter = op->ors_filterstr;
retry:
/* this goes after retry because ldap_back_munge_filter()
* optionally replaces RFC 4526 T-F filters (&) (|)
* if already computed, they will be re-installed
* by filter2bv_undef_x() later */
if ( !LDAP_BACK_T_F( li ) ) {
ldap_back_munge_filter( op, &filter );
}
rs->sr_err = ldap_pvt_search( lc->lc_ld, op->o_req_dn.bv_val,
op->ors_scope, filter.bv_val,
attrs, op->ors_attrsonly, ctrls, NULL,
tv.tv_sec ? &tv : NULL,
op->ors_slimit, op->ors_deref, &msgid );
ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_SEARCH ], 1 );
ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
if ( rs->sr_err != LDAP_SUCCESS ) {
switch ( rs->sr_err ) {
case LDAP_SERVER_DOWN:
if ( do_retry ) {
do_retry = 0;
if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_DONTSEND ) ) {
goto retry;
}
}
if ( lc == NULL ) {
/* reset by ldap_back_retry ... */
rs->sr_err = slap_map_api2result( rs );
} else {
rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_DONTSEND );
}
goto finish;
case LDAP_FILTER_ERROR:
/* first try? */
if ( !filter_undef &&
strstr( filter.bv_val, "(?" ) &&
!LDAP_BACK_NOUNDEFFILTER( li ) )
{
BER_BVZERO( &filter );
filter2bv_undef_x( op, op->ors_filter, 1, &filter );
filter_undef = 1;
goto retry;
}
/* invalid filters return success with no data */
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
goto finish;
default:
rs->sr_err = slap_map_api2result( rs );
rs->sr_text = NULL;
goto finish;
}
}
/* if needed, initialize timeout */
if ( li->li_timeout[ SLAP_OP_SEARCH ] ) {
if ( tv.tv_sec == 0 || tv.tv_sec > li->li_timeout[ SLAP_OP_SEARCH ] ) {
tv.tv_sec = li->li_timeout[ SLAP_OP_SEARCH ];
tv.tv_usec = 0;
}
}
/* We pull apart the ber result, stuff it into a slapd entry, and
* let send_search_entry stuff it back into ber format. Slow & ugly,
* but this is necessary for version matching, and for ACL processing.
*/
for ( rc = -2; rc != -1; rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ONE, &tv, &res ) )
{
/* check for abandon */
if ( op->o_abandon || LDAP_BACK_CONN_ABANDON( lc ) ) {
if ( rc > 0 ) {
ldap_msgfree( res );
}
(void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
rc = SLAPD_ABANDON;
goto finish;
}
if ( rc == 0 || rc == -2 ) {
ldap_pvt_thread_yield();
/* check timeout */
if ( li->li_timeout[ SLAP_OP_SEARCH ] ) {
if ( rc == 0 ) {
(void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
rs->sr_text = "Operation timed out";
rc = rs->sr_err = op->o_protocol >= LDAP_VERSION3 ?
LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
goto finish;
}
} else {
LDAP_BACK_TV_SET( &tv );
}
/* check time limit */
if ( op->ors_tlimit != SLAP_NO_LIMIT
&& slap_get_time() > stoptime )
{
(void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
rc = rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
goto finish;
}
continue;
} else {
/* only touch when activity actually took place... */
if ( li->li_idle_timeout ) {
lc->lc_time = op->o_time;
}
/* don't retry any more */
dont_retry = 1;
}
if ( rc == LDAP_RES_SEARCH_ENTRY ) {
Entry ent = { 0 };
struct berval bdn = BER_BVNULL;
do_retry = 0;
e = ldap_first_entry( lc->lc_ld, res );
rc = ldap_build_entry( op, e, &ent, &bdn,
remove_unknown_schema);
if ( rc == LDAP_SUCCESS ) {
ldap_get_entry_controls( lc->lc_ld, res, &rs->sr_ctrls );
rs->sr_entry = &ent;
rs->sr_attrs = op->ors_attrs;
rs->sr_operational_attrs = NULL;
rs->sr_flags = 0;
rs->sr_err = LDAP_SUCCESS;
rc = rs->sr_err = send_search_entry( op, rs );
if ( rs->sr_ctrls ) {
ldap_controls_free( rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
rs->sr_entry = NULL;
rs->sr_flags = 0;
if ( !BER_BVISNULL( &ent.e_name ) ) {
assert( ent.e_name.bv_val != bdn.bv_val );
op->o_tmpfree( ent.e_name.bv_val, op->o_tmpmemctx );
BER_BVZERO( &ent.e_name );
}
if ( !BER_BVISNULL( &ent.e_nname ) ) {
op->o_tmpfree( ent.e_nname.bv_val, op->o_tmpmemctx );
BER_BVZERO( &ent.e_nname );
}
entry_clean( &ent );
}
ldap_msgfree( res );
switch ( rc ) {
case LDAP_SUCCESS:
case LDAP_INSUFFICIENT_ACCESS:
break;
default:
if ( rc == LDAP_UNAVAILABLE ) {
rc = rs->sr_err = LDAP_OTHER;
} else {
(void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
}
goto finish;
}
} else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
if ( LDAP_BACK_NOREFS( li ) ) {
ldap_msgfree( res );
continue;
}
do_retry = 0;
rc = ldap_parse_reference( lc->lc_ld, res,
&references, &rs->sr_ctrls, 1 );
if ( rc != LDAP_SUCCESS ) {
continue;
}
/* FIXME: there MUST be at least one */
if ( references && references[ 0 ] && references[ 0 ][ 0 ] ) {
int cnt;
for ( cnt = 0; references[ cnt ]; cnt++ )
/* NO OP */ ;
/* FIXME: there MUST be at least one */
rs->sr_ref = op->o_tmpalloc( ( cnt + 1 ) * sizeof( struct berval ),
op->o_tmpmemctx );
for ( cnt = 0; references[ cnt ]; cnt++ ) {
ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
}
BER_BVZERO( &rs->sr_ref[ cnt ] );
/* ignore return value by now */
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
rs->sr_entry = NULL;
( void )send_search_reference( op, rs );
} else {
Debug( LDAP_DEBUG_ANY,
"%s ldap_back_search: "
"got SEARCH_REFERENCE "
"with no referrals\n",
op->o_log_prefix );
}
/* cleanup */
if ( references ) {
ber_memvfree( (void **)references );
op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
rs->sr_ref = NULL;
references = NULL;
}
if ( rs->sr_ctrls ) {
ldap_controls_free( rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
} else if ( rc == LDAP_RES_INTERMEDIATE ) {
/* FIXME: response controls
* are passed without checks */
rc = ldap_parse_intermediate( lc->lc_ld,
res,
(char **)&rs->sr_rspoid,
&rs->sr_rspdata,
&rs->sr_ctrls,
0 );
if ( rc != LDAP_SUCCESS ) {
continue;
}
slap_send_ldap_intermediate( op, rs );
if ( rs->sr_rspoid != NULL ) {
ber_memfree( (char *)rs->sr_rspoid );
rs->sr_rspoid = NULL;
}
if ( rs->sr_rspdata != NULL ) {
ber_bvfree( rs->sr_rspdata );
rs->sr_rspdata = NULL;
}
if ( rs->sr_ctrls != NULL ) {
ldap_controls_free( rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
} else {
char *err = NULL;
rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
&match.bv_val, &err,
&references, &rs->sr_ctrls, 1 );
if ( rc == LDAP_SUCCESS ) {
if ( err ) {
rs->sr_text = err;
freetext = 1;
}
} else {
rs->sr_err = rc;
}
rs->sr_err = slap_map_api2result( rs );
/* RFC 4511: referrals can only appear
* if result code is LDAP_REFERRAL */
if ( references
&& references[ 0 ]
&& references[ 0 ][ 0 ] )
{
if ( rs->sr_err != LDAP_REFERRAL ) {
Debug( LDAP_DEBUG_ANY,
"%s ldap_back_search: "
"got referrals with err=%d\n",
op->o_log_prefix,
rs->sr_err );
} else {
int cnt;
for ( cnt = 0; references[ cnt ]; cnt++ )
/* NO OP */ ;
rs->sr_ref = op->o_tmpalloc( ( cnt + 1 ) * sizeof( struct berval ),
op->o_tmpmemctx );
for ( cnt = 0; references[ cnt ]; cnt++ ) {
/* duplicating ...*/
ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
}
BER_BVZERO( &rs->sr_ref[ cnt ] );
}
} else if ( rs->sr_err == LDAP_REFERRAL ) {
Debug( LDAP_DEBUG_ANY,
"%s ldap_back_search: "
"got err=%d with null "
"or empty referrals\n",
op->o_log_prefix,
rs->sr_err );
rs->sr_err = LDAP_NO_SUCH_OBJECT;
}
if ( match.bv_val != NULL ) {
match.bv_len = strlen( match.bv_val );
}
rc = 0;
break;
}
/* if needed, restore timeout */
if ( li->li_timeout[ SLAP_OP_SEARCH ] ) {
if ( tv.tv_sec == 0 || tv.tv_sec > li->li_timeout[ SLAP_OP_SEARCH ] ) {
tv.tv_sec = li->li_timeout[ SLAP_OP_SEARCH ];
tv.tv_usec = 0;
}
}
}
if ( rc == -1 ) {
if ( dont_retry == 0 ) {
if ( do_retry ) {
do_retry = 0;
if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_DONTSEND ) ) {
goto retry;
}
}
rs->sr_err = LDAP_SERVER_DOWN;
rs->sr_err = slap_map_api2result( rs );
goto finish;
} else if ( LDAP_BACK_ONERR_STOP( li ) ) {
/* if onerr == STOP */
rs->sr_err = LDAP_SERVER_DOWN;
rs->sr_err = slap_map_api2result( rs );
goto finish;
}
}
/*
* Rewrite the matched portion of the search base, if required
*/
if ( !BER_BVISNULL( &match ) && !BER_BVISEMPTY( &match ) ) {
struct berval pmatch;
if ( dnPretty( NULL, &match, &pmatch, op->o_tmpmemctx ) != LDAP_SUCCESS ) {
pmatch.bv_val = match.bv_val;
match.bv_val = NULL;
}
rs->sr_matched = pmatch.bv_val;
rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
}
finish:;
if ( !BER_BVISNULL( &match ) ) {
ber_memfree( match.bv_val );
}
if ( rs->sr_v2ref ) {
rs->sr_err = LDAP_REFERRAL;
}
if ( LDAP_BACK_QUARANTINE( li ) ) {
ldap_back_quarantine( op, rs );
}
if ( filter.bv_val != op->ors_filterstr.bv_val ) {
op->o_tmpfree( filter.bv_val, op->o_tmpmemctx );
}
#if 0
/* let send_ldap_result play cleanup handlers (ITS#4645) */
if ( rc != SLAPD_ABANDON )
#endif
{
send_ldap_result( op, rs );
}
(void)ldap_back_controls_free( op, rs, &ctrls );
if ( rs->sr_ctrls ) {
ldap_controls_free( rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
if ( rs->sr_text ) {
if ( freetext ) {
ber_memfree( (char *)rs->sr_text );
}
rs->sr_text = NULL;
}
if ( rs->sr_ref ) {
op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
rs->sr_ref = NULL;
}
if ( references ) {
ber_memvfree( (void **)references );
}
if ( attrs ) {
op->o_tmpfree( attrs, op->o_tmpmemctx );
}
if ( lc != NULL ) {
ldap_back_release_conn( li, lc );
}
if ( rs->sr_err == LDAP_UNAVAILABLE &&
/* if we originally bound and wanted rebind-as-user, must drop
* the connection now because we just discarded the credentials.
* ITS#7464, #8142
*/
LDAP_BACK_SAVECRED( li ) && SLAP_IS_AUTHZ_BACKEND( op ) )
rs->sr_err = SLAPD_DISCONNECT;
return rs->sr_err;
}
static int
ldap_build_entry(
Operation *op,
LDAPMessage *e,
Entry *ent,
struct berval *bdn,
int remove_unknown_schema)
{
struct berval a;
BerElement ber = *ldap_get_message_ber( e );
Attribute *attr, **attrp;
const char *text;
int last;
char *lastb;
ber_len_t len;
/* safe assumptions ... */
assert( ent != NULL );
BER_BVZERO( &ent->e_bv );
if ( ber_scanf( &ber, "{m", bdn ) == LBER_ERROR ) {
return LDAP_DECODING_ERROR;
}
/*
* Note: this may fail if the target host(s) schema differs
* from the one known to the meta, and a DN with unknown
* attributes is returned.
*
* FIXME: should we log anything, or delegate to dnNormalize?
*/
/* Note: if the distinguished values or the naming attributes
* change, should we massage them as well?
*/
if ( dnPrettyNormal( NULL, bdn, &ent->e_name, &ent->e_nname,
op->o_tmpmemctx ) != LDAP_SUCCESS )
{
return LDAP_INVALID_DN_SYNTAX;
}
ent->e_attrs = NULL;
if ( ber_first_element( &ber, &len, &lastb ) != LBER_SEQUENCE ) {
return LDAP_SUCCESS;
}
attrp = &ent->e_attrs;
while ( ber_next_element( &ber, &len, lastb ) == LBER_SEQUENCE &&
ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
int i;
slap_syntax_validate_func *validate;
slap_syntax_transform_func *pretty;
attr = attr_alloc( NULL );
if ( attr == NULL ) {
return LDAP_OTHER;
}
if ( slap_bv2ad( &a, &attr->a_desc, &text )
!= LDAP_SUCCESS )
{
if ( slap_bv2undef_ad( &a, &attr->a_desc, &text,
(remove_unknown_schema ? SLAP_AD_NOINSERT : SLAP_AD_PROXIED )) != LDAP_SUCCESS )
{
Debug( LDAP_DEBUG_ANY,
"%s ldap_build_entry: "
"slap_bv2undef_ad(%s): %s\n",
op->o_log_prefix, a.bv_val, text );
( void )ber_scanf( &ber, "x" /* [W] */ );
attr_free( attr );
continue;
}
}
/* no subschemaSubentry */
if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry
|| attr->a_desc == slap_schema.si_ad_entryDN )
{
/*
* We eat target's subschemaSubentry because
* a search for this value is likely not
* to resolve to the appropriate backend;
* later, the local subschemaSubentry is
* added.
*
* We also eat entryDN because the frontend
* will reattach it without checking if already
* present...
*/
( void )ber_scanf( &ber, "x" /* [W] */ );
attr_free( attr );
continue;
}
if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
|| attr->a_vals == NULL )
{
/*
* Note: attr->a_vals can be null when using
* values result filter
*/
attr->a_vals = (struct berval *)&slap_dummy_bv;
}
validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
if ( !validate && !pretty ) {
attr->a_nvals = NULL;
attr_free( attr );
goto next_attr;
}
for ( i = 0; !BER_BVISNULL( &attr->a_vals[i] ); i++ ) ;
last = i;
/*
* check that each value is valid per syntax
* and pretty if appropriate
*/
for ( i = 0; i<last; i++ ) {
struct berval pval;
int rc;
if ( pretty ) {
rc = ordered_value_pretty( attr->a_desc,
&attr->a_vals[i], &pval, NULL );
} else {
rc = ordered_value_validate( attr->a_desc,
&attr->a_vals[i], 0 );
}
if ( rc != LDAP_SUCCESS ) {
ObjectClass *oc;
/* check if, by chance, it's an undefined objectClass */
if ( attr->a_desc == slap_schema.si_ad_objectClass &&
( oc = oc_bvfind_undef_ex( &attr->a_vals[i],
remove_unknown_schema ) ) != NULL )
{
ber_dupbv( &pval, &oc->soc_cname );
rc = LDAP_SUCCESS;
} else {
ber_memfree( attr->a_vals[i].bv_val );
if ( --last == i ) {
BER_BVZERO( &attr->a_vals[i] );
break;
}
attr->a_vals[i] = attr->a_vals[last];
BER_BVZERO( &attr->a_vals[last] );
i--;
}
}
if ( rc == LDAP_SUCCESS && pretty ) {
ber_memfree( attr->a_vals[i].bv_val );
attr->a_vals[i] = pval;
}
}
attr->a_numvals = last = i;
if ( last == 0 && attr->a_vals != &slap_dummy_bv ) {
attr->a_nvals = NULL;
attr_free( attr );
goto next_attr;
}
if ( last && attr->a_desc->ad_type->sat_equality &&
attr->a_desc->ad_type->sat_equality->smr_normalize )
{
attr->a_nvals = ch_malloc( ( last + 1 )*sizeof( struct berval ) );
for ( i = 0; i < last; i++ ) {
int rc;
rc = ordered_value_normalize(
SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
attr->a_desc,
attr->a_desc->ad_type->sat_equality,
&attr->a_vals[i], &attr->a_nvals[i],
NULL );
if ( rc != LDAP_SUCCESS ) {
ber_memfree( attr->a_vals[i].bv_val );
if ( --last == i ) {
BER_BVZERO( &attr->a_vals[i] );
break;
}
attr->a_vals[i] = attr->a_vals[last];
BER_BVZERO( &attr->a_vals[last] );
i--;
}
}
BER_BVZERO( &attr->a_nvals[i] );
if ( last == 0 ) {
attr_free( attr );
goto next_attr;
}
} else {
attr->a_nvals = attr->a_vals;
}
attr->a_numvals = last;
/* Handle sorted vals, strip dups but keep the attr */
if ( attr->a_desc->ad_type->sat_flags & SLAP_AT_SORTED_VAL ) {
while ( attr->a_numvals > 1 ) {
int rc = slap_sort_vals( (Modifications *)attr, &text, &i, op->o_tmpmemctx );
if ( rc != LDAP_TYPE_OR_VALUE_EXISTS )
break;
/* Strip duplicate values */
if ( attr->a_nvals != attr->a_vals )
ber_memfree( attr->a_nvals[i].bv_val );
ber_memfree( attr->a_vals[i].bv_val );
attr->a_numvals--;
assert( i >= 0 );
if ( (unsigned)i < attr->a_numvals ) {
attr->a_vals[i] = attr->a_vals[attr->a_numvals];
if ( attr->a_nvals != attr->a_vals )
attr->a_nvals[i] = attr->a_nvals[attr->a_numvals];
}
BER_BVZERO(&attr->a_vals[attr->a_numvals]);
if ( attr->a_nvals != attr->a_vals )
BER_BVZERO(&attr->a_nvals[attr->a_numvals]);
}
attr->a_flags |= SLAP_ATTR_SORTED_VALS;
}
*attrp = attr;
attrp = &attr->a_next;
next_attr:;
}
return LDAP_SUCCESS;
}
/* return 0 IFF we can retrieve the entry with ndn
*/
int
ldap_back_entry_get(
Operation *op,
struct berval *ndn,
ObjectClass *oc,
AttributeDescription *at,
int rw,
Entry **ent )
{
ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
ldapconn_t *lc = NULL;
int rc;
struct berval bdn;
LDAPMessage *result = NULL,
*e = NULL;
char *attr[3], **attrp = NULL;
char *filter = NULL;
SlapReply rs;
int do_retry = 1;
LDAPControl **ctrls = NULL;
Operation op2 = *op;
int remove_unknown_schema =
LDAP_BACK_OMIT_UNKNOWN_SCHEMA (li);
*ent = NULL;
/* Tell getconn this is a privileged op */
op2.o_do_not_cache = 1;
/* use rootdn to be doubly explicit this is privileged */
op2.o_dn = op->o_bd->be_rootdn;
op2.o_ndn = op->o_bd->be_rootndn;
/* ldap_back_entry_get() is an entry lookup, so it does not need
* to know what the entry is being looked up for */
op2.o_tag = LDAP_REQ_SEARCH;
op2.o_ctrls = NULL;
rc = ldap_back_dobind( &lc, &op2, &rs, LDAP_BACK_DONTSEND );
if ( !rc ) {
return rs.sr_err;
}
if ( at ) {
attrp = attr;
if ( oc && at != slap_schema.si_ad_objectClass ) {
attr[0] = slap_schema.si_ad_objectClass->ad_cname.bv_val;
attr[1] = at->ad_cname.bv_val;
attr[2] = NULL;
} else {
attr[0] = at->ad_cname.bv_val;
attr[1] = NULL;
}
}
if ( oc ) {
char *ptr;
filter = op->o_tmpalloc( STRLENOF( "(objectClass=" ")" )
+ oc->soc_cname.bv_len + 1, op->o_tmpmemctx );
ptr = lutil_strcopy( filter, "(objectClass=" );
ptr = lutil_strcopy( ptr, oc->soc_cname.bv_val );
*ptr++ = ')';
*ptr++ = '\0';
}
retry:
ctrls = NULL;
rc = ldap_back_controls_add( &op2, &rs, lc, &ctrls );
if ( rc != LDAP_SUCCESS ) {
goto cleanup;
}
/* TODO: timeout? */
rc = ldap_pvt_search_s( lc->lc_ld, ndn->bv_val, LDAP_SCOPE_BASE, filter,
attrp, LDAP_DEREF_NEVER, ctrls, NULL,
NULL, LDAP_NO_LIMIT, 0, &result );
if ( rc != LDAP_SUCCESS ) {
if ( rc == LDAP_SERVER_DOWN && do_retry ) {
do_retry = 0;
if ( ldap_back_retry( &lc, &op2, &rs, LDAP_BACK_DONTSEND ) ) {
/* if the identity changed, there might be need to re-authz */
(void)ldap_back_controls_free( &op2, &rs, &ctrls );
goto retry;
}
}
goto cleanup;
}
e = ldap_first_entry( lc->lc_ld, result );
if ( e == NULL ) {
/* the entry exists, but it doesn't match the filter? */
rc = LDAP_NO_RESULTS_RETURNED;
goto cleanup;
}
*ent = entry_alloc();
if ( *ent == NULL ) {
rc = LDAP_NO_MEMORY;
goto cleanup;
}
rc = ldap_build_entry( op, e, *ent, &bdn, remove_unknown_schema );
if ( rc != LDAP_SUCCESS ) {
entry_free( *ent );
*ent = NULL;
}
cleanup:
(void)ldap_back_controls_free( &op2, &rs, &ctrls );
if ( result ) {
ldap_msgfree( result );
}
if ( filter ) {
op->o_tmpfree( filter, op->o_tmpmemctx );
}
if ( lc != NULL ) {
ldap_back_release_conn( li, lc );
}
return rc;
}
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