/* $NetBSD: search.c,v 1.1.1.6.6.1 2019/08/10 06:17:19 martin Exp $ */ /* search.c - /etc/passwd backend search function */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 1998-2019 The OpenLDAP Foundation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted only as authorized by the OpenLDAP * Public License. * * A copy of this license is available in the file LICENSE in the * top-level directory of the distribution or, alternatively, at * . */ /* Portions Copyright (c) 1995 Regents of the University of Michigan. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and that due credit is given * to the University of Michigan at Ann Arbor. The name of the University * may not be used to endorse or promote products derived from this * software without specific prior written permission. This software * is provided ``as is'' without express or implied warranty. */ /* ACKNOWLEDGEMENTS: * This work was originally developed by the University of Michigan * (as part of U-MICH LDAP). Additional significant contributors * include: * Hallvard B. Furuseth * Howard Chu * Kurt D. Zeilenga */ #include __RCSID("$NetBSD: search.c,v 1.1.1.6.6.1 2019/08/10 06:17:19 martin Exp $"); #include "portable.h" #include #include #include #include #include #include #include "slap.h" #include "back-passwd.h" static void pw_start( Backend *be ); static int pw2entry( Backend *be, struct passwd *pw, Entry *ep ); int passwd_back_search( Operation *op, SlapReply *rs ) { struct passwd *pw; time_t stoptime = (time_t)-1; LDAPRDN rdn = NULL; struct berval parent = BER_BVNULL; AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass; if ( op->ors_tlimit != SLAP_NO_LIMIT ) { stoptime = op->o_time + op->ors_tlimit; } /* Handle a query for the base of this backend */ if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) { struct berval val; rs->sr_matched = op->o_req_dn.bv_val; if( op->ors_scope != LDAP_SCOPE_ONELEVEL ) { AttributeDescription *desc = NULL; char *next; Entry e = { 0 }; /* Create an entry corresponding to the base DN */ e.e_name.bv_val = ch_strdup( op->o_req_dn.bv_val ); e.e_name.bv_len = op->o_req_dn.bv_len; e.e_nname.bv_val = ch_strdup( op->o_req_ndn.bv_val ); e.e_nname.bv_len = op->o_req_ndn.bv_len; /* Use the first attribute of the DN * as an attribute within the entry itself. */ if( ldap_bv2rdn( &op->o_req_dn, &rdn, &next, LDAP_DN_FORMAT_LDAP ) ) { rs->sr_err = LDAP_INVALID_DN_SYNTAX; goto done; } if( slap_bv2ad( &rdn[0]->la_attr, &desc, &rs->sr_text )) { rs->sr_err = LDAP_NO_SUCH_OBJECT; ldap_rdnfree(rdn); goto done; } attr_merge_normalize_one( &e, desc, &rdn[0]->la_value, NULL ); ldap_rdnfree(rdn); rdn = NULL; /* Every entry needs an objectclass. We don't really * know if our hardcoded choice here agrees with the * DN that was configured for this backend, but it's * better than nothing. * * should be a configuratable item */ BER_BVSTR( &val, "organizationalUnit" ); attr_merge_one( &e, ad_objectClass, &val, NULL ); if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) { rs->sr_entry = &e; rs->sr_attrs = op->ors_attrs; rs->sr_flags = REP_ENTRY_MODIFIABLE; send_search_entry( op, rs ); rs->sr_flags = 0; rs->sr_attrs = NULL; } entry_clean( &e ); } if ( op->ors_scope != LDAP_SCOPE_BASE ) { /* check all our "children" */ ldap_pvt_thread_mutex_lock( &passwd_mutex ); pw_start( op->o_bd ); for ( pw = getpwent(); pw != NULL; pw = getpwent() ) { Entry e = { 0 }; /* check for abandon */ if ( op->o_abandon ) { endpwent(); ldap_pvt_thread_mutex_unlock( &passwd_mutex ); return( SLAPD_ABANDON ); } /* check time limit */ if ( op->ors_tlimit != SLAP_NO_LIMIT && slap_get_time() > stoptime ) { send_ldap_error( op, rs, LDAP_TIMELIMIT_EXCEEDED, NULL ); endpwent(); ldap_pvt_thread_mutex_unlock( &passwd_mutex ); return( 0 ); } if ( pw2entry( op->o_bd, pw, &e ) ) { rs->sr_err = LDAP_OTHER; endpwent(); ldap_pvt_thread_mutex_unlock( &passwd_mutex ); goto done; } if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) { /* check size limit */ if ( --op->ors_slimit == -1 ) { send_ldap_error( op, rs, LDAP_SIZELIMIT_EXCEEDED, NULL ); endpwent(); ldap_pvt_thread_mutex_unlock( &passwd_mutex ); return( 0 ); } rs->sr_entry = &e; rs->sr_attrs = op->ors_attrs; rs->sr_flags = REP_ENTRY_MODIFIABLE; send_search_entry( op, rs ); rs->sr_flags = 0; rs->sr_entry = NULL; } entry_clean( &e ); } endpwent(); ldap_pvt_thread_mutex_unlock( &passwd_mutex ); } } else { char *next; Entry e = { 0 }; int rc; if (! be_issuffix( op->o_bd, &op->o_req_ndn ) ) { dnParent( &op->o_req_ndn, &parent ); } /* This backend is only one layer deep. Don't answer requests for * anything deeper than that. */ if( !be_issuffix( op->o_bd, &parent ) ) { int i; for( i=0; op->o_bd->be_nsuffix[i].bv_val != NULL; i++ ) { if( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_nsuffix[i] ) ) { rs->sr_matched = op->o_bd->be_suffix[i].bv_val; break; } } rs->sr_err = LDAP_NO_SUCH_OBJECT; goto done; } if( op->ors_scope == LDAP_SCOPE_ONELEVEL ) { goto done; } if ( ldap_bv2rdn( &op->o_req_dn, &rdn, &next, LDAP_DN_FORMAT_LDAP )) { rs->sr_err = LDAP_OTHER; goto done; } ldap_pvt_thread_mutex_lock( &passwd_mutex ); pw_start( op->o_bd ); pw = getpwnam( rdn[0]->la_value.bv_val ); if ( pw == NULL ) { rs->sr_matched = parent.bv_val; rs->sr_err = LDAP_NO_SUCH_OBJECT; ldap_pvt_thread_mutex_unlock( &passwd_mutex ); goto done; } rc = pw2entry( op->o_bd, pw, &e ); ldap_pvt_thread_mutex_unlock( &passwd_mutex ); if ( rc ) { rs->sr_err = LDAP_OTHER; goto done; } if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) { rs->sr_entry = &e; rs->sr_attrs = op->ors_attrs; rs->sr_flags = REP_ENTRY_MODIFIABLE; send_search_entry( op, rs ); rs->sr_flags = 0; rs->sr_entry = NULL; rs->sr_attrs = NULL; } entry_clean( &e ); } done: if( rs->sr_err != LDAP_NO_SUCH_OBJECT ) rs->sr_matched = NULL; send_ldap_result( op, rs ); if( rdn != NULL ) ldap_rdnfree( rdn ); return( 0 ); } static void pw_start( Backend *be ) { endpwent(); #ifdef HAVE_SETPWFILE if ( be->be_private != NULL ) { (void) setpwfile( (char *) be->be_private ); } #endif /* HAVE_SETPWFILE */ } static int pw2entry( Backend *be, struct passwd *pw, Entry *e ) { size_t pwlen; struct berval val; struct berval bv; int rc; /* * from pw we get pw_name and make it cn * give it an objectclass of person. */ pwlen = strlen( pw->pw_name ); val.bv_len = STRLENOF("uid=,") + ( pwlen + be->be_suffix[0].bv_len ); val.bv_val = ch_malloc( val.bv_len + 1 ); /* rdn attribute type should be a configuratable item */ sprintf( val.bv_val, "uid=%s,%s", pw->pw_name, be->be_suffix[0].bv_val ); rc = dnNormalize( 0, NULL, NULL, &val, &bv, NULL ); if( rc != LDAP_SUCCESS ) { free( val.bv_val ); return( -1 ); } e->e_name = val; e->e_nname = bv; e->e_attrs = NULL; /* objectclasses should be configurable items */ BER_BVSTR( &val, "person" ); attr_merge_one( e, slap_schema.si_ad_objectClass, &val, NULL ); BER_BVSTR( &val, "uidObject" ); attr_merge_one( e, slap_schema.si_ad_objectClass, &val, NULL ); val.bv_val = pw->pw_name; val.bv_len = pwlen; attr_merge_normalize_one( e, slap_schema.si_ad_uid, &val, NULL ); /* required by uidObject */ attr_merge_normalize_one( e, slap_schema.si_ad_cn, &val, NULL ); /* required by person */ attr_merge_normalize_one( e, ad_sn, &val, NULL ); /* required by person */ #ifdef HAVE_STRUCT_PASSWD_PW_GECOS /* * if gecos is present, add it as a cn. first process it * according to standard BSD usage. If the processed cn has * a space, use the tail as the surname. */ if (pw->pw_gecos[0]) { char *s; ber_str2bv( pw->pw_gecos, 0, 0, &val ); attr_merge_normalize_one( e, ad_desc, &val, NULL ); s = ber_bvchr( &val, ',' ); if ( s ) *s = '\0'; s = ber_bvchr( &val, '&' ); if ( s ) { char buf[1024]; if( val.bv_len + pwlen < sizeof(buf) ) { int i = s - val.bv_val; strncpy( buf, val.bv_val, i ); s = buf + i; strcpy( s, pw->pw_name ); *s = TOUPPER((unsigned char)*s); strcat( s, val.bv_val + i + 1 ); val.bv_val = buf; } } val.bv_len = strlen( val.bv_val ); if ( val.bv_len && strcasecmp( val.bv_val, pw->pw_name ) ) { attr_merge_normalize_one( e, slap_schema.si_ad_cn, &val, NULL ); } if ( ( s = strrchr(val.bv_val, ' ' ) ) ) { ber_str2bv( s + 1, 0, 0, &val ); attr_merge_normalize_one( e, ad_sn, &val, NULL ); } } #endif /* HAVE_STRUCT_PASSWD_PW_GECOS */ return( 0 ); }