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https://git.openldap.org/openldap/openldap.git
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d5edb4bff6
user password. Likely to be modified to use bind control instead. Use of modify deprecated in favor mechanisms that support passwords stored externally to the directory (such as in a SASL service). Modified slapd extended operation infrastructure to support backend provided extended operations.
333 lines
8.5 KiB
C
333 lines
8.5 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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/*
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* Copyright (c) 1995 Regents of the University of Michigan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and that due credit is given
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* to the University of Michigan at Ann Arbor. The name of the University
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission. This software
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* is provided ``as is'' without express or implied warranty.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include "ldap_pvt.h"
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#include "slap.h"
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static void modlist_free(LDAPModList *ml);
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static int add_modified_attrs( Operation *op, LDAPModList **modlist );
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int
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do_modify(
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Connection *conn,
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Operation *op
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)
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{
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char *dn, *ndn;
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char *last;
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ber_tag_t tag;
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ber_len_t len;
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LDAPModList *modlist = NULL;
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LDAPModList **modtail = &modlist;
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#ifdef LDAP_DEBUG
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LDAPModList *tmp;
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#endif
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Backend *be;
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int rc;
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Debug( LDAP_DEBUG_TRACE, "do_modify\n", 0, 0, 0 );
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if( op->o_bind_in_progress ) {
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Debug( LDAP_DEBUG_ANY, "do_modify: SASL bind in progress.\n",
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0, 0, 0 );
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send_ldap_result( conn, op, LDAP_SASL_BIND_IN_PROGRESS,
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NULL, "SASL bind in progress", NULL, NULL );
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return LDAP_SASL_BIND_IN_PROGRESS;
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}
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/*
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* Parse the modify request. It looks like this:
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*
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* ModifyRequest := [APPLICATION 6] SEQUENCE {
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* name DistinguishedName,
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* mods SEQUENCE OF SEQUENCE {
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* operation ENUMERATED {
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* add (0),
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* delete (1),
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* replace (2)
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* },
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* modification SEQUENCE {
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* type AttributeType,
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* values SET OF AttributeValue
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* }
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* }
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* }
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*/
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if ( ber_scanf( op->o_ber, "{a" /*}*/, &dn ) == LBER_ERROR ) {
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Debug( LDAP_DEBUG_ANY, "do_modify: ber_scanf failed\n", 0, 0, 0 );
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send_ldap_disconnect( conn, op,
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LDAP_PROTOCOL_ERROR, "decoding error" );
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return -1;
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}
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Debug( LDAP_DEBUG_ARGS, "do_modify: dn (%s)\n", dn, 0, 0 );
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ndn = ch_strdup( dn );
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if( dn_normalize( ndn ) == NULL ) {
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Debug( LDAP_DEBUG_ANY, "do_modify: invalid dn (%s)\n", dn, 0, 0 );
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send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
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"invalid DN", NULL, NULL );
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goto cleanup;
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}
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/* collect modifications & save for later */
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for ( tag = ber_first_element( op->o_ber, &len, &last );
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tag != LBER_DEFAULT;
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tag = ber_next_element( op->o_ber, &len, last ) )
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{
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ber_int_t mop;
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(*modtail) = (LDAPModList *) ch_calloc( 1, sizeof(LDAPModList) );
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if ( ber_scanf( op->o_ber, "{i{a[V]}}", &mop,
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&(*modtail)->ml_type, &(*modtail)->ml_bvalues )
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== LBER_ERROR )
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{
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send_ldap_disconnect( conn, op,
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LDAP_PROTOCOL_ERROR, "decoding modlist error" );
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rc = -1;
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goto cleanup;
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}
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(*modtail)->ml_op = mop;
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if ( (*modtail)->ml_op != LDAP_MOD_ADD &&
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(*modtail)->ml_op != LDAP_MOD_DELETE &&
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(*modtail)->ml_op != LDAP_MOD_REPLACE )
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{
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Debug( LDAP_DEBUG_ANY,
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"do_modify: invalid modify operation (%ld)\n",
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(long) (*modtail)->ml_op, 0, 0 );
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send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR,
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NULL, "unrecognized modify operation", NULL, NULL );
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rc = LDAP_PROTOCOL_ERROR;
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goto cleanup;
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}
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if ( (*modtail)->ml_bvalues == NULL && (
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(*modtail)->ml_op != LDAP_MOD_REPLACE &&
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(*modtail)->ml_op != LDAP_MOD_DELETE ) )
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{
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Debug( LDAP_DEBUG_ANY,
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"do_modify: invalid modify operation (%ld) without values\n",
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(long) (*modtail)->ml_op, 0, 0 );
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send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR,
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NULL, "unrecognized modify operation without values",
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NULL, NULL );
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rc = LDAP_PROTOCOL_ERROR;
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goto cleanup;
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}
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attr_normalize( (*modtail)->ml_type );
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modtail = &(*modtail)->ml_next;
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}
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*modtail = NULL;
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#ifdef LDAP_DEBUG
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Debug( LDAP_DEBUG_ARGS, "modifications:\n", 0, 0, 0 );
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for ( tmp = modlist; tmp != NULL; tmp = tmp->ml_next ) {
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Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
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tmp->ml_op == LDAP_MOD_ADD
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? "add" : (tmp->ml_op == LDAP_MOD_DELETE
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? "delete" : "replace"), tmp->ml_type, 0 );
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}
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#endif
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if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
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Debug( LDAP_DEBUG_ANY, "do_modify: get_ctrls failed\n", 0, 0, 0 );
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goto cleanup;
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}
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Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d MOD dn=\"%s\"\n",
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op->o_connid, op->o_opid, dn, 0, 0 );
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/*
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* We could be serving multiple database backends. Select the
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* appropriate one, or send a referral to our "referral server"
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* if we don't hold it.
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*/
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if ( (be = select_backend( ndn )) == NULL ) {
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send_ldap_result( conn, op, rc = LDAP_REFERRAL,
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NULL, NULL, default_referral, NULL );
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goto cleanup;
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}
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/* make sure this backend recongizes critical controls */
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rc = backend_check_controls( be, conn, op ) ;
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc,
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NULL, NULL, NULL, NULL );
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}
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if ( global_readonly || be->be_readonly ) {
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Debug( LDAP_DEBUG_ANY, "do_modify: database is read-only\n",
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0, 0, 0 );
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send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
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NULL, "database is read-only", NULL, NULL );
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goto cleanup;
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}
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/* deref suffix alias if appropriate */
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ndn = suffix_alias( be, ndn );
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/*
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* do the modify if 1 && (2 || 3)
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* 1) there is a modify function implemented in this backend;
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* 2) this backend is master for what it holds;
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* 3) it's a replica and the dn supplied is the update_ndn.
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*/
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if ( be->be_modify ) {
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/* do the update here */
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#ifndef SLAPD_MULTIMASTER
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/* we don't have to check for replicator dn
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* because we accept each modify request
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*/
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if ( be->be_update_ndn == NULL ||
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strcmp( be->be_update_ndn, op->o_ndn ) == 0 )
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#endif
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{
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if ( (be->be_lastmod == ON || (be->be_lastmod == UNDEFINED &&
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global_lastmod == ON)) && be->be_update_ndn == NULL )
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{
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rc = add_modified_attrs( op, &modlist );
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc,
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NULL, "no-user-modification attribute type",
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NULL, NULL );
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goto cleanup;
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}
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}
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if ( (*be->be_modify)( be, conn, op, dn, ndn, modlist ) == 0
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#ifdef SLAPD_MULTIMASTER
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&& ( be->be_update_ndn == NULL ||
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strcmp( be->be_update_ndn, op->o_ndn ) != 0 )
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#endif
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) {
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/* but we log only the ones not from a replicator user */
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replog( be, op, dn, modlist );
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}
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#ifndef SLAPD_MULTIMASTER
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/* send a referral */
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} else {
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send_ldap_result( conn, op, rc = LDAP_REFERRAL, NULL, NULL,
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be->be_update_refs ? be->be_update_refs : default_referral,
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NULL );
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#endif
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}
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} else {
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send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
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NULL, "Function not implemented", NULL, NULL );
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}
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cleanup:
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free( dn );
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free( ndn );
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if ( modlist != NULL )
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modlist_free( modlist );
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return rc;
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}
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static int
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add_modified_attrs( Operation *op, LDAPModList **modlist )
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{
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char buf[22];
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struct berval bv;
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struct berval *bvals[2];
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LDAPModList *m;
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struct tm *ltm;
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time_t currenttime;
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bvals[0] = &bv;
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bvals[1] = NULL;
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/* remove any attempts by the user to modify these attrs */
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for ( m = *modlist; m != NULL; m = m->ml_next ) {
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if ( oc_check_no_usermod_attr( m->ml_type ) ) {
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return LDAP_CONSTRAINT_VIOLATION;
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}
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}
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if ( op->o_dn == NULL || op->o_dn[0] == '\0' ) {
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bv.bv_val = "NULLDN";
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bv.bv_len = strlen( bv.bv_val );
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} else {
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bv.bv_val = op->o_dn;
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bv.bv_len = strlen( bv.bv_val );
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}
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m = (LDAPModList *) ch_calloc( 1, sizeof(LDAPModList) );
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m->ml_type = ch_strdup( "modifiersname" );
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m->ml_op = LDAP_MOD_REPLACE;
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m->ml_bvalues = (struct berval **) ch_calloc(2, sizeof(struct berval *));
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m->ml_bvalues[0] = ber_bvdup( &bv );
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m->ml_next = *modlist;
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*modlist = m;
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currenttime = slap_get_time();
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ldap_pvt_thread_mutex_lock( &gmtime_mutex );
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ltm = gmtime( ¤ttime );
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strftime( buf, sizeof(buf), "%Y%m%d%H%M%SZ", ltm );
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ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
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bv.bv_val = buf;
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bv.bv_len = strlen( bv.bv_val );
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m = (LDAPModList *) ch_calloc( 1, sizeof(LDAPModList) );
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m->ml_type = ch_strdup( "modifytimestamp" );
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m->ml_op = LDAP_MOD_REPLACE;
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m->ml_bvalues = (struct berval **) ch_calloc(2, sizeof(struct berval *));
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m->ml_bvalues[0] = ber_bvdup( &bv );
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m->ml_next = *modlist;
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*modlist = m;
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return LDAP_SUCCESS;
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}
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static void
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modlist_free(
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LDAPModList *ml
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)
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{
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LDAPModList *next;
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for ( ; ml != NULL; ml = next ) {
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next = ml->ml_next;
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if (ml->ml_type)
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free( ml->ml_type );
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if ( ml->ml_bvalues != NULL )
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ber_bvecfree( ml->ml_bvalues );
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free( ml );
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}
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}
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