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456 lines
9.6 KiB
C
456 lines
9.6 KiB
C
/* log.c - deal with log subsystem */
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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 2001-2013 The OpenLDAP Foundation.
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* Portions Copyright 2001-2003 Pierangelo Masarati.
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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 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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#include <stdio.h>
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#include <ac/string.h>
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#include "slap.h"
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#include <lber_pvt.h>
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#include "lutil.h"
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#include "ldif.h"
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#include "back-monitor.h"
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static int
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monitor_subsys_log_open(
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BackendDB *be,
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monitor_subsys_t *ms );
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static int
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monitor_subsys_log_modify(
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Operation *op,
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SlapReply *rs,
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Entry *e );
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/*
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* log mutex
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*/
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ldap_pvt_thread_mutex_t monitor_log_mutex;
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static int add_values( Operation *op, Entry *e, Modification *mod, int *newlevel );
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static int delete_values( Operation *op, Entry *e, Modification *mod, int *newlevel );
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static int replace_values( Operation *op, Entry *e, Modification *mod, int *newlevel );
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/*
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* initializes log subentry
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*/
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int
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monitor_subsys_log_init(
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BackendDB *be,
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monitor_subsys_t *ms )
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{
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ms->mss_open = monitor_subsys_log_open;
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ms->mss_modify = monitor_subsys_log_modify;
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ldap_pvt_thread_mutex_init( &monitor_log_mutex );
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return( 0 );
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}
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/*
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* opens log subentry
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*/
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int
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monitor_subsys_log_open(
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BackendDB *be,
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monitor_subsys_t *ms )
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{
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BerVarray bva = NULL;
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if ( loglevel2bvarray( ldap_syslog, &bva ) == 0 && bva != NULL ) {
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monitor_info_t *mi;
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Entry *e;
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mi = ( monitor_info_t * )be->be_private;
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if ( monitor_cache_get( mi, &ms->mss_ndn, &e ) ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_log_init: "
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"unable to get entry \"%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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ber_bvarray_free( bva );
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return( -1 );
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}
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attr_merge_normalize( e, mi->mi_ad_managedInfo, bva, NULL );
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ber_bvarray_free( bva );
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monitor_cache_release( mi, e );
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}
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return( 0 );
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}
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static int
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monitor_subsys_log_modify(
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Operation *op,
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SlapReply *rs,
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Entry *e )
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{
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monitor_info_t *mi = ( monitor_info_t * )op->o_bd->be_private;
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int rc = LDAP_OTHER;
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int newlevel = ldap_syslog;
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Attribute *save_attrs;
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Modifications *modlist = op->orm_modlist;
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Modifications *ml;
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ldap_pvt_thread_mutex_lock( &monitor_log_mutex );
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save_attrs = e->e_attrs;
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e->e_attrs = attrs_dup( e->e_attrs );
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for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
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Modification *mod = &ml->sml_mod;
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/*
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* accept all operational attributes;
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* this includes modifersName and modifyTimestamp
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* if lastmod is "on"
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*/
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if ( is_at_operational( mod->sm_desc->ad_type ) ) {
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( void ) attr_delete( &e->e_attrs, mod->sm_desc );
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rc = rs->sr_err = attr_merge( e, mod->sm_desc,
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mod->sm_values, mod->sm_nvalues );
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if ( rc != LDAP_SUCCESS ) {
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break;
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}
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continue;
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/*
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* only the "managedInfo" attribute can be modified
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*/
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} else if ( mod->sm_desc != mi->mi_ad_managedInfo ) {
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rc = rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
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break;
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}
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switch ( mod->sm_op ) {
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case LDAP_MOD_ADD:
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rc = add_values( op, e, mod, &newlevel );
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break;
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case LDAP_MOD_DELETE:
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rc = delete_values( op, e, mod, &newlevel );
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break;
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case LDAP_MOD_REPLACE:
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rc = replace_values( op, e, mod, &newlevel );
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break;
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default:
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rc = LDAP_OTHER;
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break;
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}
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if ( rc != LDAP_SUCCESS ) {
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rs->sr_err = rc;
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break;
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}
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}
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/* set the new debug level */
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if ( rc == LDAP_SUCCESS ) {
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const char *text;
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static char textbuf[ BACKMONITOR_BUFSIZE ];
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/* check for abandon */
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if ( op->o_abandon ) {
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rc = rs->sr_err = SLAPD_ABANDON;
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goto cleanup;
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}
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/* check that the entry still obeys the schema */
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rc = entry_schema_check( op, e, save_attrs, 0, 0, NULL,
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&text, textbuf, sizeof( textbuf ) );
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if ( rc != LDAP_SUCCESS ) {
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rs->sr_err = rc;
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goto cleanup;
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}
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/*
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* Do we need to protect this with a mutex?
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*/
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ldap_syslog = newlevel;
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#if 0 /* debug rather than log */
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slap_debug = newlevel;
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lutil_set_debug_level( "slapd", slap_debug );
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ber_set_option(NULL, LBER_OPT_DEBUG_LEVEL, &slap_debug);
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ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &slap_debug);
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ldif_debug = slap_debug;
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#endif
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}
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cleanup:;
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if ( rc == LDAP_SUCCESS ) {
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attrs_free( save_attrs );
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} else {
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attrs_free( e->e_attrs );
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e->e_attrs = save_attrs;
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}
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ldap_pvt_thread_mutex_unlock( &monitor_log_mutex );
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if ( rc == LDAP_SUCCESS ) {
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rc = SLAP_CB_CONTINUE;
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}
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return rc;
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}
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static int
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check_constraints( Modification *mod, int *newlevel )
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{
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int i;
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if ( mod->sm_nvalues != NULL ) {
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ber_bvarray_free( mod->sm_nvalues );
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mod->sm_nvalues = NULL;
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}
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for ( i = 0; !BER_BVISNULL( &mod->sm_values[ i ] ); i++ ) {
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int l;
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struct berval bv;
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if ( str2loglevel( mod->sm_values[ i ].bv_val, &l ) ) {
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return LDAP_CONSTRAINT_VIOLATION;
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}
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if ( loglevel2bv( l, &bv ) ) {
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return LDAP_CONSTRAINT_VIOLATION;
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}
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assert( bv.bv_len == mod->sm_values[ i ].bv_len );
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AC_MEMCPY( mod->sm_values[ i ].bv_val,
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bv.bv_val, bv.bv_len );
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*newlevel |= l;
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}
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return LDAP_SUCCESS;
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}
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static int
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add_values( Operation *op, Entry *e, Modification *mod, int *newlevel )
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{
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Attribute *a;
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int i, rc;
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MatchingRule *mr = mod->sm_desc->ad_type->sat_equality;
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assert( mod->sm_values != NULL );
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rc = check_constraints( mod, newlevel );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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a = attr_find( e->e_attrs, mod->sm_desc );
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if ( a != NULL ) {
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/* "managedInfo" SHOULD have appropriate rules ... */
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if ( mr == NULL || !mr->smr_match ) {
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return LDAP_INAPPROPRIATE_MATCHING;
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}
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for ( i = 0; !BER_BVISNULL( &mod->sm_values[ i ] ); i++ ) {
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int rc;
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int j;
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const char *text = NULL;
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struct berval asserted;
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rc = asserted_value_validate_normalize(
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mod->sm_desc, mr, SLAP_MR_EQUALITY,
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&mod->sm_values[ i ], &asserted, &text,
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op->o_tmpmemctx );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ ) {
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int match;
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int rc = value_match( &match, mod->sm_desc, mr,
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0, &a->a_nvals[ j ], &asserted, &text );
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if ( rc == LDAP_SUCCESS && match == 0 ) {
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free( asserted.bv_val );
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return LDAP_TYPE_OR_VALUE_EXISTS;
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}
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}
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free( asserted.bv_val );
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}
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}
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/* no - add them */
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rc = attr_merge_normalize( e, mod->sm_desc, mod->sm_values,
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op->o_tmpmemctx );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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return LDAP_SUCCESS;
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}
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static int
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delete_values( Operation *op, Entry *e, Modification *mod, int *newlevel )
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{
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int i, j, k, found, rc, nl = 0;
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Attribute *a;
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MatchingRule *mr = mod->sm_desc->ad_type->sat_equality;
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/* delete the entire attribute */
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if ( mod->sm_values == NULL ) {
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int rc = attr_delete( &e->e_attrs, mod->sm_desc );
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if ( rc ) {
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rc = LDAP_NO_SUCH_ATTRIBUTE;
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} else {
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*newlevel = 0;
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rc = LDAP_SUCCESS;
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}
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return rc;
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}
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rc = check_constraints( mod, &nl );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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*newlevel &= ~nl;
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if ( mr == NULL || !mr->smr_match ) {
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/* disallow specific attributes from being deleted if
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* no equality rule */
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return LDAP_INAPPROPRIATE_MATCHING;
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}
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/* delete specific values - find the attribute first */
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if ( (a = attr_find( e->e_attrs, mod->sm_desc )) == NULL ) {
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return( LDAP_NO_SUCH_ATTRIBUTE );
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}
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/* find each value to delete */
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for ( i = 0; !BER_BVISNULL( &mod->sm_values[ i ] ); i++ ) {
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int rc;
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const char *text = NULL;
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struct berval asserted;
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rc = asserted_value_validate_normalize(
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mod->sm_desc, mr, SLAP_MR_EQUALITY,
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&mod->sm_values[ i ], &asserted, &text,
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op->o_tmpmemctx );
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if( rc != LDAP_SUCCESS ) return rc;
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found = 0;
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for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ ) {
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int match;
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int rc = value_match( &match, mod->sm_desc, mr,
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0, &a->a_nvals[ j ], &asserted, &text );
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if( rc == LDAP_SUCCESS && match != 0 ) {
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continue;
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}
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/* found a matching value */
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found = 1;
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/* delete it */
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if ( a->a_nvals != a->a_vals ) {
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free( a->a_nvals[ j ].bv_val );
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for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
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a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
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}
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BER_BVZERO( &a->a_nvals[ k - 1 ] );
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}
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free( a->a_vals[ j ].bv_val );
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for ( k = j + 1; !BER_BVISNULL( &a->a_vals[ k ] ); k++ ) {
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a->a_vals[ k - 1 ] = a->a_vals[ k ];
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}
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BER_BVZERO( &a->a_vals[ k - 1 ] );
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a->a_numvals--;
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break;
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}
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free( asserted.bv_val );
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/* looked through them all w/o finding it */
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if ( ! found ) {
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return LDAP_NO_SUCH_ATTRIBUTE;
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}
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}
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/* if no values remain, delete the entire attribute */
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if ( BER_BVISNULL( &a->a_vals[ 0 ] ) ) {
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assert( a->a_numvals == 0 );
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/* should already be zero */
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*newlevel = 0;
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if ( attr_delete( &e->e_attrs, mod->sm_desc ) ) {
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return LDAP_NO_SUCH_ATTRIBUTE;
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}
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}
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return LDAP_SUCCESS;
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}
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static int
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replace_values( Operation *op, Entry *e, Modification *mod, int *newlevel )
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{
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int rc;
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if ( mod->sm_values != NULL ) {
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*newlevel = 0;
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rc = check_constraints( mod, newlevel );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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}
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rc = attr_delete( &e->e_attrs, mod->sm_desc );
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if ( rc != LDAP_SUCCESS && rc != LDAP_NO_SUCH_ATTRIBUTE ) {
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return rc;
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}
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if ( mod->sm_values != NULL ) {
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rc = attr_merge_normalize( e, mod->sm_desc, mod->sm_values,
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op->o_tmpmemctx );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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}
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return LDAP_SUCCESS;
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}
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