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359 lines
8.8 KiB
C
359 lines
8.8 KiB
C
/* search.c - /etc/passwd backend search function */
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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 1998-2005 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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/* Portions 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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/* ACKNOWLEDGEMENTS:
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* This work was originally developed by the University of Michigan
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* (as part of U-MICH LDAP). Additional significant contributors
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* include:
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* Hallvard B. Furuseth
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* Howard Chu
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* Kurt D. Zeilenga
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/ctype.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 <pwd.h>
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#include "slap.h"
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#include "back-passwd.h"
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static void pw_start( Backend *be );
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static int pw2entry(
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Backend *be,
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struct passwd *pw,
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Entry *ep );
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int
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passwd_back_search(
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Operation *op,
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SlapReply *rs )
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{
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struct passwd *pw;
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time_t stoptime = (time_t)-1;
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LDAPRDN rdn = NULL;
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struct berval parent = BER_BVNULL;
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AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
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if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
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stoptime = op->o_time + op->ors_tlimit;
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}
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/* Handle a query for the base of this backend */
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if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
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struct berval val;
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rs->sr_matched = op->o_req_dn.bv_val;
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if( op->ors_scope != LDAP_SCOPE_ONELEVEL ) {
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AttributeDescription *desc = NULL;
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char *next;
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Entry e = { 0 };
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/* Create an entry corresponding to the base DN */
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e.e_name.bv_val = ch_strdup( op->o_req_dn.bv_val );
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e.e_name.bv_len = op->o_req_dn.bv_len;
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e.e_nname.bv_val = ch_strdup( op->o_req_ndn.bv_val );
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e.e_nname.bv_len = op->o_req_ndn.bv_len;
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/* Use the first attribute of the DN
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* as an attribute within the entry itself.
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*/
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if( ldap_bv2rdn( &op->o_req_dn, &rdn, &next,
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LDAP_DN_FORMAT_LDAP ) )
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{
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rs->sr_err = LDAP_INVALID_DN_SYNTAX;
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goto done;
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}
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if( slap_bv2ad( &rdn[0]->la_attr, &desc, &rs->sr_text )) {
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rs->sr_err = LDAP_NO_SUCH_OBJECT;
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ldap_rdnfree(rdn);
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goto done;
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}
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attr_merge_normalize_one( &e, desc, &rdn[0]->la_value, NULL );
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ldap_rdnfree(rdn);
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rdn = NULL;
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/* Every entry needs an objectclass. We don't really
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* know if our hardcoded choice here agrees with the
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* DN that was configured for this backend, but it's
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* better than nothing.
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*
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* should be a configuratable item
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*/
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BER_BVSTR( &val, "organizationalUnit" );
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attr_merge_one( &e, ad_objectClass, &val, NULL );
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if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
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rs->sr_entry = &e;
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rs->sr_attrs = op->ors_attrs;
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rs->sr_flags = REP_ENTRY_MODIFIABLE;
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send_search_entry( op, rs );
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}
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entry_clean( &e );
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}
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if ( op->ors_scope != LDAP_SCOPE_BASE ) {
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/* check all our "children" */
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ldap_pvt_thread_mutex_lock( &passwd_mutex );
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pw_start( op->o_bd );
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for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
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Entry e = { 0 };
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/* check for abandon */
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if ( op->o_abandon ) {
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endpwent();
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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return( SLAPD_ABANDON );
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}
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/* check time limit */
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if ( op->ors_tlimit != SLAP_NO_LIMIT
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&& slap_get_time() > stoptime )
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{
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send_ldap_error( op, rs, LDAP_TIMELIMIT_EXCEEDED, NULL );
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endpwent();
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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return( 0 );
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}
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if ( pw2entry( op->o_bd, pw, &e ) ) {
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rs->sr_err = LDAP_OTHER;
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endpwent();
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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goto done;
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}
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if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
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/* check size limit */
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if ( --op->ors_slimit == -1 ) {
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send_ldap_error( op, rs, LDAP_SIZELIMIT_EXCEEDED, NULL );
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endpwent();
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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return( 0 );
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}
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rs->sr_entry = &e;
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rs->sr_attrs = op->ors_attrs;
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rs->sr_flags = REP_ENTRY_MODIFIABLE;
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send_search_entry( op, rs );
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}
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entry_clean( &e );
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}
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endpwent();
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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}
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} else {
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char *next;
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Entry e = { 0 };
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int rc;
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if (! be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
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dnParent( &op->o_req_ndn, &parent );
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}
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/* This backend is only one layer deep. Don't answer requests for
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* anything deeper than that.
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*/
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if( !be_issuffix( op->o_bd, &parent ) ) {
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int i;
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for( i=0; op->o_bd->be_nsuffix[i].bv_val != NULL; i++ ) {
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if( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_nsuffix[i] ) ) {
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rs->sr_matched = op->o_bd->be_suffix[i].bv_val;
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break;
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}
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}
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rs->sr_err = LDAP_NO_SUCH_OBJECT;
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goto done;
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}
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if( op->ors_scope == LDAP_SCOPE_ONELEVEL ) {
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goto done;
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}
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if ( ldap_bv2rdn( &op->o_req_dn, &rdn, &next,
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LDAP_DN_FORMAT_LDAP ))
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{
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rs->sr_err = LDAP_OTHER;
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goto done;
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}
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ldap_pvt_thread_mutex_lock( &passwd_mutex );
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pw_start( op->o_bd );
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pw = getpwnam( rdn[0]->la_value.bv_val );
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if ( pw == NULL ) {
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rs->sr_matched = parent.bv_val;
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rs->sr_err = LDAP_NO_SUCH_OBJECT;
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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goto done;
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}
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rc = pw2entry( op->o_bd, pw, &e );
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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if ( rc ) {
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rs->sr_err = LDAP_OTHER;
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goto done;
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}
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if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
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rs->sr_entry = &e;
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rs->sr_attrs = op->ors_attrs;
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rs->sr_flags = REP_ENTRY_MODIFIABLE;
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send_search_entry( op, rs );
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}
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entry_clean( &e );
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}
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done:
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if( rs->sr_err != LDAP_NO_SUCH_OBJECT ) rs->sr_matched = NULL;
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send_ldap_result( op, rs );
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if( rdn != NULL ) ldap_rdnfree( rdn );
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return( 0 );
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}
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static void
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pw_start(
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Backend *be
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)
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{
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endpwent();
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#ifdef HAVE_SETPWFILE
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if ( be->be_private != NULL ) {
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(void) setpwfile( (char *) be->be_private );
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}
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#endif /* HAVE_SETPWFILE */
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}
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static int
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pw2entry( Backend *be, struct passwd *pw, Entry *e )
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{
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size_t pwlen;
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struct berval val;
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struct berval bv;
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int rc;
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/*
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* from pw we get pw_name and make it cn
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* give it an objectclass of person.
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*/
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pwlen = strlen( pw->pw_name );
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val.bv_len = STRLENOF("uid=,") + ( pwlen + be->be_suffix[0].bv_len );
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val.bv_val = ch_malloc( val.bv_len + 1 );
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/* rdn attribute type should be a configuratable item */
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sprintf( val.bv_val, "uid=%s,%s",
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pw->pw_name, be->be_suffix[0].bv_val );
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rc = dnNormalize( 0, NULL, NULL, &val, &bv, NULL );
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if( rc != LDAP_SUCCESS ) {
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free( val.bv_val );
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return( -1 );
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}
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e->e_name = val;
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e->e_nname = bv;
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e->e_attrs = NULL;
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/* objectclasses should be configurable items */
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BER_BVSTR( &val, "person" );
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attr_merge_one( e, slap_schema.si_ad_objectClass, &val, NULL );
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BER_BVSTR( &val, "uidObject" );
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attr_merge_one( e, slap_schema.si_ad_objectClass, &val, NULL );
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val.bv_val = pw->pw_name;
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val.bv_len = pwlen;
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attr_merge_normalize_one( e, slap_schema.si_ad_uid, &val, NULL ); /* required by uidObject */
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attr_merge_normalize_one( e, slap_schema.si_ad_cn, &val, NULL ); /* required by person */
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attr_merge_normalize_one( e, ad_sn, &val, NULL ); /* required by person */
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#ifdef HAVE_STRUCT_PASSWD_PW_GECOS
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/*
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* if gecos is present, add it as a cn. first process it
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* according to standard BSD usage. If the processed cn has
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* a space, use the tail as the surname.
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*/
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if (pw->pw_gecos[0]) {
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char *s;
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ber_str2bv( pw->pw_gecos, 0, 0, &val );
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attr_merge_normalize_one( e, ad_desc, &val, NULL );
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s = ber_bvchr( &val, ',' );
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if ( s ) *s = '\0';
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s = ber_bvchr( &val, '&' );
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if ( s ) {
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char buf[1024];
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if( val.bv_len + pwlen < sizeof(buf) ) {
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int i = s - val.bv_val;
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strncpy( buf, val.bv_val, i );
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s = buf + i;
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strcpy( s, pw->pw_name );
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*s = TOUPPER((unsigned char)*s);
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strcat( s, val.bv_val + i + 1 );
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val.bv_val = buf;
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}
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}
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val.bv_len = strlen( val.bv_val );
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if ( val.bv_len && strcasecmp( val.bv_val, pw->pw_name ) ) {
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attr_merge_normalize_one( e, slap_schema.si_ad_cn, &val, NULL );
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}
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if ( ( s = strrchr(val.bv_val, ' ' ) ) ) {
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ber_str2bv( s + 1, 0, 0, &val );
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attr_merge_normalize_one( e, ad_sn, &val, NULL );
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}
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}
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#endif /* HAVE_STRUCT_PASSWD_PW_GECOS */
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return( 0 );
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}
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