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support for no-op search control (ITS#6598)
This commit is contained in:
Pierangelo Masarati
parent
1760501cea
commit
afe2764a03
52
contrib/slapd-modules/noopsrch/Makefile
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52
contrib/slapd-modules/noopsrch/Makefile
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# $OpenLDAP$
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# This work is part of OpenLDAP Software <http://www.openldap.org/>.
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#
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# Copyright 1998-2010 The OpenLDAP Foundation.
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# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted only as authorized by the OpenLDAP
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# Public License.
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#
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# A copy of this license is available in the file LICENSE in the
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# top-level directory of the distribution or, alternatively, at
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# <http://www.OpenLDAP.org/license.html>.
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LIBTOOL=../../../libtool
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OPT=-DSLAPD_OVER_NOOPSRCH=2 -g -O2
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#LIBTOOL=../../../../ldap-devel/libtool
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#OPT=-DSLAPD_OVER_NOOPSRCH=2 -g -O0
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CC=gcc
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LDAP_INC=-I../../../include -I../../../servers/slapd
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#LDAP_INC=-I../../../include -I../../../servers/slapd -I../../../../ldap-devel/include
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INCS=$(LDAP_INC)
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LDAP_LIB=-lldap_r -llber
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LIBS=$(LDAP_LIB)
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prefix=/usr/local
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exec_prefix=$(prefix)
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ldap_subdir=/openldap
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libdir=$(exec_prefix)/lib
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libexecdir=$(exec_prefix)/libexec
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moduledir = $(libexecdir)$(ldap_subdir)
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all: noopsrch.la
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noopsrch.lo: noopsrch.c
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$(LIBTOOL) --mode=compile $(CC) $(OPT) $(DEFS) $(INCS) -c $?
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noopsrch.la: noopsrch.lo
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$(LIBTOOL) --mode=link $(CC) $(OPT) -version-info 0:0:0 \
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-rpath $(moduledir) -module -o $@ $? $(LIBS)
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clean:
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rm -f noopsrch.lo noopsrch.la
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install: noopsrch.la
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mkdir -p $(DESTDIR)$(moduledir)
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$(LIBTOOL) --mode=install cp noopsrch.la $(DESTDIR)$(moduledir)
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226
contrib/slapd-modules/noopsrch/noopsrch.c
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226
contrib/slapd-modules/noopsrch/noopsrch.c
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/* noopsrch.c - LDAP Control that counts entries a search would return */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2010 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was initially developed by Pierangelo Masarati for inclusion
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* in OpenLDAP Software.
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*/
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#include "portable.h"
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/* define SLAPD_OVER_NOOPSRCH=2 to build as run-time loadable module */
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#ifdef SLAPD_OVER_NOOPSRCH
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/*
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* Control OID
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*/
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#define LDAP_CONTROL_X_NOOPSRCH "1.3.6.1.4.1.4203.666.5.18"
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#include "slap.h"
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#include "ac/string.h"
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#define o_noopsrch o_ctrlflag[noopsrch_cid]
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#define o_ctrlnoopsrch o_controls[noopsrch_cid]
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static int noopsrch_cid;
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static slap_overinst noopsrch;
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static int
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noopsrch_parseCtrl (
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Operation *op,
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SlapReply *rs,
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LDAPControl *ctrl )
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{
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if ( op->o_noopsrch != SLAP_CONTROL_NONE ) {
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rs->sr_text = "No-op Search control specified multiple times";
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return LDAP_PROTOCOL_ERROR;
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}
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if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
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rs->sr_text = "No-op Search control value is present";
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return LDAP_PROTOCOL_ERROR;
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}
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op->o_ctrlnoopsrch = (void *)NULL;
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op->o_noopsrch = ctrl->ldctl_iscritical
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? SLAP_CONTROL_CRITICAL
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: SLAP_CONTROL_NONCRITICAL;
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rs->sr_err = LDAP_SUCCESS;
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return rs->sr_err;
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}
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int dummy;
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typedef struct noopsrch_cb_t {
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slap_overinst *nc_on;
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ber_int_t nc_nentries;
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ber_int_t nc_nsearchref;
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AttributeName *nc_save_attrs;
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int *nc_pdummy;
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int nc_save_slimit;
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} noopsrch_cb_t;
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static int
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noopsrch_response( Operation *op, SlapReply *rs )
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{
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noopsrch_cb_t *nc = (noopsrch_cb_t *)op->o_callback->sc_private;
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/* if the control is global, limits are not computed yet */
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if ( nc->nc_pdummy == &dummy ) {
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nc->nc_save_slimit = op->ors_slimit;
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op->ors_slimit = SLAP_NO_LIMIT;
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nc->nc_pdummy = NULL;
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}
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if ( rs->sr_type == REP_SEARCH ) {
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nc->nc_nentries++;
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#ifdef NOOPSRCH_DEBUG
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Debug( LDAP_DEBUG_TRACE, "noopsrch_response(REP_SEARCH): nentries=%d\n", nc->nc_nentries, 0, 0 );
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#endif
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return 0;
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} else if ( rs->sr_type == REP_SEARCHREF ) {
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nc->nc_nsearchref++;
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return 0;
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} else if ( rs->sr_type == REP_RESULT ) {
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BerElementBuffer berbuf;
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BerElement *ber = (BerElement *) &berbuf;
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struct berval ctrlval;
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LDAPControl *ctrl, *ctrlsp[2];
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int rc = rs->sr_err;
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if ( nc->nc_save_slimit >= 0 && nc->nc_nentries >= nc->nc_save_slimit ) {
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rc = LDAP_SIZELIMIT_EXCEEDED;
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}
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#ifdef NOOPSRCH_DEBUG
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Debug( LDAP_DEBUG_TRACE, "noopsrch_response(REP_RESULT): err=%d nentries=%d nref=%d\n", rc, nc->nc_nentries, nc->nc_nsearchref );
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#endif
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ber_init2( ber, NULL, LBER_USE_DER );
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ber_printf( ber, "{iii}", rc, nc->nc_nentries, nc->nc_nsearchref );
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if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
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ber_free_buf( ber );
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if ( op->o_noopsrch == SLAP_CONTROL_CRITICAL ) {
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return LDAP_CONSTRAINT_VIOLATION;
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}
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return SLAP_CB_CONTINUE;
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}
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ctrl = op->o_tmpcalloc( 1,
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sizeof( LDAPControl ) + ctrlval.bv_len + 1,
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op->o_tmpmemctx );
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ctrl->ldctl_value.bv_val = (char *)&ctrl[ 1 ];
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ctrl->ldctl_oid = LDAP_CONTROL_X_NOOPSRCH;
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ctrl->ldctl_iscritical = 0;
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ctrl->ldctl_value.bv_len = ctrlval.bv_len;
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AC_MEMCPY( ctrl->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len );
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ctrl->ldctl_value.bv_val[ ctrl->ldctl_value.bv_len ] = '\0';
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ber_free_buf( ber );
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ctrlsp[0] = ctrl;
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ctrlsp[1] = NULL;
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slap_add_ctrls( op, rs, ctrlsp );
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return SLAP_CB_CONTINUE;
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}
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}
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static int
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noopsrch_cleanup( Operation *op, SlapReply *rs )
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{
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if ( rs->sr_type == REP_RESULT || rs->sr_err == SLAPD_ABANDON ) {
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noopsrch_cb_t *nc = (noopsrch_cb_t *)op->o_callback->sc_private;
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op->ors_attrs = nc->nc_save_attrs;
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if ( nc->nc_pdummy == NULL ) {
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op->ors_slimit = nc->nc_save_slimit;
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}
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op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
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op->o_callback = NULL;
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}
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return SLAP_CB_CONTINUE;
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}
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static int
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noopsrch_op_search( Operation *op, SlapReply *rs )
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{
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if ( op->o_noopsrch != SLAP_CONTROL_NONE ) {
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slap_callback *sc;
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noopsrch_cb_t *nc;
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sc = op->o_tmpcalloc( 1, sizeof( slap_callback ) + sizeof( noopsrch_cb_t ), op->o_tmpmemctx );
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nc = (noopsrch_cb_t *)&sc[ 1 ];
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nc->nc_on = (slap_overinst *)op->o_bd->bd_info;
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nc->nc_nentries = 0;
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nc->nc_nsearchref = 0;
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nc->nc_save_attrs = op->ors_attrs;
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nc->nc_pdummy = &dummy;
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sc->sc_response = noopsrch_response;
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sc->sc_cleanup = noopsrch_cleanup;
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sc->sc_private = (void *)nc;
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op->ors_attrs = slap_anlist_no_attrs;
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sc->sc_next = op->o_callback->sc_next;
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op->o_callback->sc_next = sc;
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}
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return SLAP_CB_CONTINUE;
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}
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#if SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC
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static
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#endif /* SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC */
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int
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noopsrch_initialize( void )
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{
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int rc;
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rc = register_supported_control( LDAP_CONTROL_X_NOOPSRCH,
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SLAP_CTRL_SEARCH, NULL,
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noopsrch_parseCtrl, &noopsrch_cid );
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if ( rc != LDAP_SUCCESS ) {
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Debug( LDAP_DEBUG_ANY,
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"noopsrch_initialize: Failed to register control (%d)\n",
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rc, 0, 0 );
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return -1;
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}
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noopsrch.on_bi.bi_type = "noopsrch";
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noopsrch.on_bi.bi_op_search = noopsrch_op_search;
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return overlay_register( &noopsrch );
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}
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#if SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC
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int
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init_module( int argc, char *argv[] )
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{
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return noopsrch_initialize();
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}
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#endif /* SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC */
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#endif /* SLAPD_OVER_NOOPSRCH */
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