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      1 /*	$NetBSD: passwd.c,v 1.4 2025/09/05 21:16:25 christos Exp $	*/
      2 
      3 /* passwd.c - password extended operation routines */
      4 /* $OpenLDAP$ */
      5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
      6  *
      7  * Copyright 1998-2024 The OpenLDAP Foundation.
      8  * All rights reserved.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted only as authorized by the OpenLDAP
     12  * Public License.
     13  *
     14  * A copy of this license is available in the file LICENSE in the
     15  * top-level directory of the distribution or, alternatively, at
     16  * <http://www.OpenLDAP.org/license.html>.
     17  */
     18 
     19 #include <sys/cdefs.h>
     20 __RCSID("$NetBSD: passwd.c,v 1.4 2025/09/05 21:16:25 christos Exp $");
     21 
     22 #include "portable.h"
     23 
     24 #include <stdio.h>
     25 
     26 #include <ac/socket.h>
     27 #include <ac/string.h>
     28 #include <ac/unistd.h>
     29 
     30 #ifdef SLAPD_CRYPT
     31 #ifdef HAVE_CRYPT_R
     32 #define __USE_GNU
     33 #endif /* HAVE_CRYPT_R */
     34 #include <ac/crypt.h>
     35 #endif /* SLAPD_CRYPT */
     36 
     37 #include "slap.h"
     38 
     39 #include <lber_pvt.h>
     40 #include <lutil.h>
     41 #include <lutil_sha1.h>
     42 
     43 const struct berval slap_EXOP_MODIFY_PASSWD = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
     44 
     45 static const char *defhash[] = {
     46 #ifdef LUTIL_SHA1_BYTES
     47 	"{SSHA}",
     48 #else
     49 	"{SMD5}",
     50 #endif
     51 	NULL
     52 };
     53 
     54 int passwd_extop(
     55 	Operation *op,
     56 	SlapReply *rs )
     57 {
     58 	struct berval id = {0, NULL}, hash, *rsp = NULL;
     59 	req_pwdexop_s *qpw = &op->oq_pwdexop;
     60 	req_extended_s qext = op->oq_extended;
     61 	Modifications *ml;
     62 	slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
     63 	int i, nhash;
     64 	char **hashes, idNul;
     65 	int rc;
     66 	BackendDB *op_be;
     67 	int freenewpw = 0;
     68 	struct berval dn = BER_BVNULL, ndn = BER_BVNULL;
     69 
     70 	assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );
     71 
     72 	if( op->o_dn.bv_len == 0 ) {
     73 		Debug( LDAP_DEBUG_STATS, "%s PASSMOD\n",
     74 			op->o_log_prefix );
     75 		rs->sr_text = "only authenticated users may change passwords";
     76 		return LDAP_STRONG_AUTH_REQUIRED;
     77 	}
     78 
     79 	qpw->rs_old.bv_len = 0;
     80 	qpw->rs_old.bv_val = NULL;
     81 	qpw->rs_new.bv_len = 0;
     82 	qpw->rs_new.bv_val = NULL;
     83 	qpw->rs_mods = NULL;
     84 	qpw->rs_modtail = NULL;
     85 
     86 	rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
     87 		&qpw->rs_old, &qpw->rs_new, &rs->sr_text );
     88 
     89 	if ( !BER_BVISNULL( &id )) {
     90 		idNul = id.bv_val[id.bv_len];
     91 		id.bv_val[id.bv_len] = '\0';
     92 	}
     93 	if ( rs->sr_err == LDAP_SUCCESS && !BER_BVISEMPTY( &id ) ) {
     94 		Debug( LDAP_DEBUG_STATS, "%s PASSMOD id=\"%s\"%s%s\n",
     95 			op->o_log_prefix, id.bv_val,
     96 			qpw->rs_old.bv_val ? " old" : "",
     97 			qpw->rs_new.bv_val ? " new" : "" );
     98 	} else {
     99 		Debug( LDAP_DEBUG_STATS, "%s PASSMOD%s%s\n",
    100 			op->o_log_prefix,
    101 			qpw->rs_old.bv_val ? " old" : "",
    102 			qpw->rs_new.bv_val ? " new" : "" );
    103 	}
    104 
    105 	if ( rs->sr_err != LDAP_SUCCESS ) {
    106 		if ( !BER_BVISNULL( &id ))
    107 			id.bv_val[id.bv_len] = idNul;
    108 		return rs->sr_err;
    109 	}
    110 
    111 	if ( !BER_BVISEMPTY( &id ) ) {
    112 		rs->sr_err = dnPrettyNormal( NULL, &id, &dn, &ndn, op->o_tmpmemctx );
    113 		id.bv_val[id.bv_len] = idNul;
    114 		if ( rs->sr_err != LDAP_SUCCESS ) {
    115 			rs->sr_text = "Invalid DN";
    116 			rc = rs->sr_err;
    117 			goto error_return;
    118 		}
    119 		op->o_req_dn = dn;
    120 		op->o_req_ndn = ndn;
    121 		op->o_bd = select_backend( &op->o_req_ndn, 1 );
    122 
    123 	} else {
    124 		ber_dupbv_x( &dn, &op->o_dn, op->o_tmpmemctx );
    125 		ber_dupbv_x( &ndn, &op->o_ndn, op->o_tmpmemctx );
    126 		op->o_req_dn = dn;
    127 		op->o_req_ndn = ndn;
    128 		ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
    129 		op->o_bd = op->o_conn->c_authz_backend;
    130 		ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
    131 	}
    132 
    133 	if( op->o_bd == NULL ) {
    134 		if ( qpw->rs_old.bv_val != NULL ) {
    135 			rs->sr_text = "unwilling to verify old password";
    136 			rc = LDAP_UNWILLING_TO_PERFORM;
    137 			goto error_return;
    138 		}
    139 
    140 #ifdef HAVE_CYRUS_SASL
    141 		rc = slap_sasl_setpass( op, rs );
    142 #else
    143 		rs->sr_text = "no authz backend";
    144 		rc = LDAP_OTHER;
    145 #endif
    146 		goto error_return;
    147 	}
    148 
    149 	if ( op->o_req_ndn.bv_len == 0 ) {
    150 		rs->sr_text = "no password is associated with the Root DSE";
    151 		rc = LDAP_UNWILLING_TO_PERFORM;
    152 		goto error_return;
    153 	}
    154 
    155 	/* If we've got a glued backend, check the real backend */
    156 	op_be = op->o_bd;
    157 	if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
    158 		op->o_bd = select_backend( &op->o_req_ndn, 0 );
    159 	}
    160 
    161 	if (backend_check_restrictions( op, rs,
    162 			(struct berval *)&slap_EXOP_MODIFY_PASSWD ) != LDAP_SUCCESS) {
    163 		rc = rs->sr_err;
    164 		goto error_return;
    165 	}
    166 
    167 	/* check for referrals */
    168 	if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
    169 		rc = rs->sr_err;
    170 		goto error_return;
    171 	}
    172 
    173 	/* This does not apply to multi-provider case */
    174 	if(!( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ))) {
    175 		/* we SHOULD return a referral in this case */
    176 		BerVarray defref = op->o_bd->be_update_refs
    177 			? op->o_bd->be_update_refs : default_referral;
    178 
    179 		if( defref != NULL ) {
    180 			rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
    181 				NULL, NULL, LDAP_SCOPE_DEFAULT );
    182 			if(rs->sr_ref) {
    183 				rs->sr_flags |= REP_REF_MUSTBEFREED;
    184 			} else {
    185 				rs->sr_ref = defref;
    186 			}
    187 			rc = LDAP_REFERRAL;
    188 			goto error_return;
    189 
    190 		}
    191 
    192 		rs->sr_text = "shadow context; no update referral";
    193 		rc = LDAP_UNWILLING_TO_PERFORM;
    194 		goto error_return;
    195 	}
    196 
    197 	/* generate a new password if none was provided */
    198 	if ( qpw->rs_new.bv_len == 0 ) {
    199 		slap_passwd_generate( &qpw->rs_new );
    200 		if ( qpw->rs_new.bv_len ) {
    201 			rsp = slap_passwd_return( &qpw->rs_new );
    202 			freenewpw = 1;
    203 		}
    204 	}
    205 	if ( qpw->rs_new.bv_len == 0 ) {
    206 		rs->sr_text = "password generation failed";
    207 		rc = LDAP_OTHER;
    208 		goto error_return;
    209 	}
    210 
    211 	if ( op->o_txnSpec ) {
    212 		rc = txn_preop( op, rs );
    213 		goto error_return;
    214 	}
    215 
    216 	op->o_bd = op_be;
    217 
    218 	/* Give the backend a chance to handle this itself */
    219 	if ( op->o_bd->be_extended ) {
    220 		rs->sr_err = op->o_bd->be_extended( op, rs );
    221 		if ( rs->sr_err != LDAP_UNWILLING_TO_PERFORM &&
    222 			rs->sr_err != SLAP_CB_CONTINUE )
    223 		{
    224 			rc = rs->sr_err;
    225 			if ( rsp ) {
    226 				rs->sr_rspdata = rsp;
    227 				rsp = NULL;
    228 			}
    229 			goto error_return;
    230 		}
    231 	}
    232 
    233 	/* The backend didn't handle it, so try it here */
    234 	if( op->o_bd && !op->o_bd->be_modify ) {
    235 		rs->sr_text = "operation not supported for current user";
    236 		rc = LDAP_UNWILLING_TO_PERFORM;
    237 		goto error_return;
    238 	}
    239 
    240 	if ( qpw->rs_old.bv_val != NULL ) {
    241 		Entry *e = NULL;
    242 
    243 		rc = be_entry_get_rw( op, &op->o_req_ndn, NULL,
    244 			slap_schema.si_ad_userPassword, 0, &e );
    245 		if ( rc == LDAP_SUCCESS && e ) {
    246 			Attribute *a = attr_find( e->e_attrs,
    247 				slap_schema.si_ad_userPassword );
    248 			if ( a )
    249 				rc = slap_passwd_check( op, e, a, &qpw->rs_old, &rs->sr_text );
    250 			else
    251 				rc = 1;
    252 			be_entry_release_r( op, e );
    253 			if ( rc == LDAP_SUCCESS )
    254 				goto old_good;
    255 		}
    256 		rs->sr_text = "unwilling to verify old password";
    257 		rc = LDAP_UNWILLING_TO_PERFORM;
    258 		goto error_return;
    259 	}
    260 
    261 old_good:
    262 	ml = ch_malloc( sizeof(Modifications) );
    263 	if ( !qpw->rs_modtail ) qpw->rs_modtail = &ml->sml_next;
    264 
    265 	if ( default_passwd_hash ) {
    266 		for ( nhash = 0; default_passwd_hash[nhash]; nhash++ );
    267 		hashes = default_passwd_hash;
    268 	} else {
    269 		nhash = 1;
    270 		hashes = (char **)defhash;
    271 	}
    272 	ml->sml_numvals = nhash;
    273 	ml->sml_values = ch_malloc( (nhash+1)*sizeof(struct berval) );
    274 	for ( i=0; hashes[i]; i++ ) {
    275 		slap_passwd_hash_type( &qpw->rs_new, &hash, hashes[i], &rs->sr_text );
    276 		if ( hash.bv_len == 0 ) {
    277 			if ( !rs->sr_text ) {
    278 				rs->sr_text = "password hash failed";
    279 			}
    280 			break;
    281 		}
    282 		ml->sml_values[i] = hash;
    283 	}
    284 	ml->sml_values[i].bv_val = NULL;
    285 	ml->sml_nvalues = NULL;
    286 	ml->sml_desc = slap_schema.si_ad_userPassword;
    287 	ml->sml_type = ml->sml_desc->ad_cname;
    288 	ml->sml_op = LDAP_MOD_REPLACE;
    289 	ml->sml_flags = 0;
    290 	ml->sml_next = qpw->rs_mods;
    291 	qpw->rs_mods = ml;
    292 
    293 	if ( hashes[i] ) {
    294 		rs->sr_err = LDAP_OTHER;
    295 
    296 	} else {
    297 		slap_callback **sc;
    298 
    299 		cb.sc_next = op->o_callback;
    300 
    301 		op->o_tag = LDAP_REQ_MODIFY;
    302 		op->o_callback = &cb;
    303 		op->orm_modlist = qpw->rs_mods;
    304 		op->orm_no_opattrs = 0;
    305 
    306 		cb.sc_private = qpw;	/* let Modify know this was pwdMod,
    307 					 * if it cares... */
    308 
    309 		rs->sr_err = op->o_bd->be_modify( op, rs );
    310 
    311 		/* be_modify() might have shuffled modifications */
    312 		qpw->rs_mods = op->orm_modlist;
    313 
    314 		if ( rs->sr_err == LDAP_SUCCESS ) {
    315 			rs->sr_rspdata = rsp;
    316 
    317 		} else if ( rsp ) {
    318 			ber_bvfree( rsp );
    319 			rsp = NULL;
    320 		}
    321 		op->o_tag = LDAP_REQ_EXTENDED;
    322 		for ( sc = &op->o_callback; *sc; sc = &(*sc)->sc_next ) {
    323 			if ( *sc == &cb ) {
    324 				*sc = cb.sc_next;
    325 				break;
    326 			}
    327 		}
    328 	}
    329 
    330 	rc = rs->sr_err;
    331 	op->oq_extended = qext;
    332 
    333 error_return:;
    334 	if ( qpw->rs_mods ) {
    335 		slap_mods_free( qpw->rs_mods, 1 );
    336 	}
    337 	if ( freenewpw ) {
    338 		free( qpw->rs_new.bv_val );
    339 	}
    340 	if ( !BER_BVISNULL( &dn ) ) {
    341 		op->o_tmpfree( dn.bv_val, op->o_tmpmemctx );
    342 		BER_BVZERO( &op->o_req_dn );
    343 	}
    344 	if ( !BER_BVISNULL( &ndn ) ) {
    345 		op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
    346 		BER_BVZERO( &op->o_req_ndn );
    347 	}
    348 
    349 	return rc;
    350 }
    351 
    352 /* NOTE: The DN in *id is NOT NUL-terminated here. dnNormalize will
    353  * reject it in this condition, the caller must NUL-terminate it.
    354  * FIXME: should dnNormalize still be complaining about that?
    355  */
    356 int slap_passwd_parse( struct berval *reqdata,
    357 	struct berval *id,
    358 	struct berval *oldpass,
    359 	struct berval *newpass,
    360 	const char **text )
    361 {
    362 	int rc = LDAP_SUCCESS;
    363 	ber_tag_t tag;
    364 	ber_len_t len = -1;
    365 	BerElementBuffer berbuf;
    366 	BerElement *ber = (BerElement *)&berbuf;
    367 
    368 	if( reqdata == NULL ) {
    369 		return LDAP_SUCCESS;
    370 	}
    371 
    372 	if( reqdata->bv_len == 0 ) {
    373 		*text = "empty request data field";
    374 		return LDAP_PROTOCOL_ERROR;
    375 	}
    376 
    377 	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
    378 	ber_init2( ber, reqdata, 0 );
    379 
    380 	tag = ber_skip_tag( ber, &len );
    381 
    382 	if( tag != LBER_SEQUENCE ) {
    383 		Debug( LDAP_DEBUG_TRACE,
    384 			"slap_passwd_parse: decoding error\n" );
    385 		rc = LDAP_PROTOCOL_ERROR;
    386 		goto done;
    387 	}
    388 
    389 	tag = ber_peek_tag( ber, &len );
    390 	if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_ID ) {
    391 		if( id == NULL ) {
    392 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID not allowed.\n" );
    393 
    394 			*text = "user must change own password";
    395 			rc = LDAP_UNWILLING_TO_PERFORM;
    396 			goto done;
    397 		}
    398 
    399 		tag = ber_get_stringbv( ber, id, LBER_BV_NOTERM );
    400 
    401 		if( tag == LBER_ERROR ) {
    402 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n" );
    403 
    404 			goto decoding_error;
    405 		}
    406 
    407 		tag = ber_peek_tag( ber, &len );
    408 	}
    409 
    410 	if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_OLD ) {
    411 		if( oldpass == NULL ) {
    412 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD not allowed.\n" );
    413 
    414 			*text = "use bind to verify old password";
    415 			rc = LDAP_UNWILLING_TO_PERFORM;
    416 			goto done;
    417 		}
    418 
    419 		tag = ber_get_stringbv( ber, oldpass, LBER_BV_NOTERM );
    420 
    421 		if( tag == LBER_ERROR ) {
    422 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD parse failed.\n" );
    423 
    424 			goto decoding_error;
    425 		}
    426 
    427 		if( oldpass->bv_len == 0 ) {
    428 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD empty.\n" );
    429 
    430 			*text = "old password value is empty";
    431 			rc = LDAP_UNWILLING_TO_PERFORM;
    432 			goto done;
    433 		}
    434 
    435 		tag = ber_peek_tag( ber, &len );
    436 	}
    437 
    438 	if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_NEW ) {
    439 		if( newpass == NULL ) {
    440 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW not allowed.\n" );
    441 
    442 			*text = "user specified passwords disallowed";
    443 			rc = LDAP_UNWILLING_TO_PERFORM;
    444 			goto done;
    445 		}
    446 
    447 		tag = ber_get_stringbv( ber, newpass, LBER_BV_NOTERM );
    448 
    449 		if( tag == LBER_ERROR ) {
    450 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW parse failed.\n" );
    451 
    452 			goto decoding_error;
    453 		}
    454 
    455 		if( newpass->bv_len == 0 ) {
    456 			Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW empty.\n" );
    457 
    458 			*text = "new password value is empty";
    459 			rc = LDAP_UNWILLING_TO_PERFORM;
    460 			goto done;
    461 		}
    462 
    463 		tag = ber_peek_tag( ber, &len );
    464 	}
    465 
    466 	if( len != 0 ) {
    467 decoding_error:
    468 		Debug( LDAP_DEBUG_TRACE,
    469 			"slap_passwd_parse: decoding error, len=%ld\n",
    470 			(long) len );
    471 
    472 		*text = "data decoding error";
    473 		rc = LDAP_PROTOCOL_ERROR;
    474 	}
    475 
    476 done:
    477 	return rc;
    478 }
    479 
    480 struct berval * slap_passwd_return(
    481 	struct berval		*cred )
    482 {
    483 	int rc;
    484 	struct berval *bv = NULL;
    485 	BerElementBuffer berbuf;
    486 	/* opaque structure, size unknown but smaller than berbuf */
    487 	BerElement *ber = (BerElement *)&berbuf;
    488 
    489 	assert( cred != NULL );
    490 
    491 	Debug( LDAP_DEBUG_TRACE, "slap_passwd_return: %ld\n",
    492 		(long) cred->bv_len );
    493 
    494 	ber_init_w_nullc( ber, LBER_USE_DER );
    495 
    496 	rc = ber_printf( ber, "{tON}",
    497 		LDAP_TAG_EXOP_MODIFY_PASSWD_GEN, cred );
    498 
    499 	if( rc >= 0 ) {
    500 		(void) ber_flatten( ber, &bv );
    501 	}
    502 
    503 	ber_free_buf( ber );
    504 
    505 	return bv;
    506 }
    507 
    508 /*
    509  * if "e" is provided, access to each value of the password is checked first
    510  */
    511 int
    512 slap_passwd_check(
    513 	Operation	*op,
    514 	Entry		*e,
    515 	Attribute	*a,
    516 	struct berval	*cred,
    517 	const char	**text )
    518 {
    519 	int			result = 1;
    520 	struct berval		*bv;
    521 	AccessControlState	acl_state = ACL_STATE_INIT;
    522 	char		credNul = cred->bv_val[cred->bv_len];
    523 
    524 #ifdef SLAPD_SPASSWD
    525 	void		*old_authctx = NULL;
    526 
    527 	ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)slap_sasl_bind,
    528 		op->o_conn->c_sasl_authctx, 0, &old_authctx, NULL );
    529 #endif
    530 
    531 	if ( credNul ) cred->bv_val[cred->bv_len] = 0;
    532 
    533 	for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
    534 		/* if e is provided, check access */
    535 		if ( e && access_allowed( op, e, a->a_desc, bv,
    536 					ACL_AUTH, &acl_state ) == 0 )
    537 		{
    538 			continue;
    539 		}
    540 
    541 		if ( !lutil_passwd( bv, cred, NULL, text ) ) {
    542 			result = 0;
    543 			break;
    544 		}
    545 	}
    546 
    547 	if ( credNul ) cred->bv_val[cred->bv_len] = credNul;
    548 
    549 #ifdef SLAPD_SPASSWD
    550 	ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)slap_sasl_bind,
    551 		old_authctx, 0, NULL, NULL );
    552 #endif
    553 
    554 	return result;
    555 }
    556 
    557 void
    558 slap_passwd_generate( struct berval *pass )
    559 {
    560 	Debug( LDAP_DEBUG_TRACE, "slap_passwd_generate\n" );
    561 	BER_BVZERO( pass );
    562 
    563 	/*
    564 	 * generate passwords of only 8 characters as some getpass(3)
    565 	 * implementations truncate at 8 characters.
    566 	 */
    567 	lutil_passwd_generate( pass, 8 );
    568 }
    569 
    570 void
    571 slap_passwd_hash_type(
    572 	struct berval * cred,
    573 	struct berval * new,
    574 	char *hash,
    575 	const char **text )
    576 {
    577 	new->bv_len = 0;
    578 	new->bv_val = NULL;
    579 
    580 	assert( hash != NULL );
    581 
    582 	lutil_passwd_hash( cred , hash, new, text );
    583 }
    584 void
    585 slap_passwd_hash(
    586 	struct berval * cred,
    587 	struct berval * new,
    588 	const char **text )
    589 {
    590 	char *hash = NULL;
    591 	if ( default_passwd_hash ) {
    592 		hash = default_passwd_hash[0];
    593 	}
    594 	if ( !hash ) {
    595 		hash = (char *)defhash[0];
    596 	}
    597 
    598 	slap_passwd_hash_type( cred, new, hash, text );
    599 }
    600 
    601 #ifdef SLAPD_CRYPT
    602 static ldap_pvt_thread_mutex_t passwd_mutex;
    603 static lutil_cryptfunc slapd_crypt;
    604 
    605 #ifdef HAVE_CRYPT_R
    606 static int slapd_crypt( const char *key, const char *salt, char **hash )
    607 {
    608 	char *cr;
    609 	int rc;
    610 	struct crypt_data data;
    611 
    612 	data.initialized = 0;
    613 	cr = crypt_r( key, salt, &data );
    614 	if ( cr == NULL || cr[0] == '\0' ) {
    615 		/* salt must have been invalid */
    616 		rc = LUTIL_PASSWD_ERR;
    617 	} else {
    618 		if ( hash ) {
    619 			*hash = ber_strdup( cr );
    620 			rc = LUTIL_PASSWD_OK;
    621 		} else {
    622 			rc = strcmp( salt, cr ) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
    623 		}
    624 	}
    625 
    626     return rc;
    627 }
    628 #else
    629 static int slapd_crypt( const char *key, const char *salt, char **hash )
    630 {
    631 	char *cr;
    632 	int rc;
    633 
    634 	ldap_pvt_thread_mutex_lock( &passwd_mutex );
    635 
    636 	cr = crypt( key, salt );
    637 	if ( cr == NULL || cr[0] == '\0' ) {
    638 		/* salt must have been invalid */
    639 		rc = LUTIL_PASSWD_ERR;
    640 	} else {
    641 		if ( hash ) {
    642 			*hash = ber_strdup( cr );
    643 			rc = LUTIL_PASSWD_OK;
    644 
    645 		} else {
    646 			rc = strcmp( salt, cr ) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
    647 		}
    648 	}
    649 
    650 	ldap_pvt_thread_mutex_unlock( &passwd_mutex );
    651 	return rc;
    652 }
    653 #endif /* HAVE_CRYPT_R */
    654 
    655 #endif /* SLAPD_CRYPT */
    656 
    657 void slap_passwd_init()
    658 {
    659 #ifdef SLAPD_CRYPT
    660 	ldap_pvt_thread_mutex_init( &passwd_mutex );
    661 	lutil_cryptptr = slapd_crypt;
    662 #endif
    663 }
    664 
    665