2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2010 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
23 #include <ac/stdlib.h>
24 #include <ac/string.h>
35 #ifdef HAVE_CYRUS_SASL
36 # ifdef HAVE_SASL_SASL_H
37 # include <sasl/sasl.h>
38 # include <sasl/saslplug.h>
41 # include <saslplug.h>
44 # define SASL_CONST const
46 #define SASL_VERSION_FULL ((SASL_VERSION_MAJOR << 16) |\
47 (SASL_VERSION_MINOR << 8) | SASL_VERSION_STEP)
49 static sasl_security_properties_t sasl_secprops;
50 #elif defined( SLAP_BUILTIN_SASL )
52 * built-in SASL implementation
53 * only supports EXTERNAL
55 typedef struct sasl_ctx {
56 slap_ssf_t sc_external_ssf;
57 struct berval sc_external_id;
64 static struct berval ext_bv = BER_BVC( "EXTERNAL" );
66 char *slap_sasl_auxprops;
68 #ifdef HAVE_CYRUS_SASL
70 /* Just use our internal auxprop by default */
74 const char *plugin_name,
79 if ( strcmp( option, "auxprop_plugin" )) {
82 if ( slap_sasl_auxprops )
83 *result = slap_sasl_auxprops;
95 Connection *conn = context;
99 if ( message == NULL ) {
100 return SASL_BADPARAM;
105 level = LDAP_DEBUG_NONE;
109 level = LDAP_DEBUG_ANY;
113 level = LDAP_DEBUG_ANY;
117 level = LDAP_DEBUG_TRACE;
121 level = LDAP_DEBUG_TRACE;
125 level = LDAP_DEBUG_TRACE;
129 level = LDAP_DEBUG_TRACE;
133 level = LDAP_DEBUG_TRACE;
134 label = "Password Trace";
137 return SASL_BADPARAM;
140 Debug( level, "SASL [conn=%ld] %s: %s\n",
141 conn ? (long) conn->c_connid: -1L,
148 static const char *slap_propnames[] = {
149 "*slapConn", "*slapAuthcDNlen", "*slapAuthcDN",
150 "*slapAuthzDNlen", "*slapAuthzDN", NULL };
152 #ifdef SLAP_AUXPROP_DONTUSECOPY
153 int slap_dontUseCopy_ignore;
154 BerVarray slap_dontUseCopy_propnames;
155 #endif /* SLAP_AUXPROP_DONTUSECOPY */
157 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
158 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
160 #define SLAP_SASL_PROP_CONN 0
161 #define SLAP_SASL_PROP_AUTHCLEN 1
162 #define SLAP_SASL_PROP_AUTHC 2
163 #define SLAP_SASL_PROP_AUTHZLEN 3
164 #define SLAP_SASL_PROP_AUTHZ 4
165 #define SLAP_SASL_PROP_COUNT 5 /* Number of properties we used */
167 typedef struct lookup_info {
169 const struct propval *list;
170 sasl_server_params_t *sparams;
173 static slap_response sasl_ap_lookup;
175 static struct berval sc_cleartext = BER_BVC("{CLEARTEXT}");
178 sasl_ap_lookup( Operation *op, SlapReply *rs )
181 AttributeDescription *ad;
185 lookup_info *sl = (lookup_info *)op->o_callback->sc_private;
187 /* return the actual error code,
188 * to allow caller to handle specific errors
190 if (rs->sr_type != REP_SEARCH) return rs->sr_err;
192 for( i = 0; sl->list[i].name; i++ ) {
193 const char *name = sl->list[i].name;
195 if ( name[0] == '*' ) {
196 if ( sl->flags & SASL_AUXPROP_AUTHZID ) continue;
197 /* Skip our private properties */
198 if ( !strcmp( name, slap_propnames[0] )) {
199 i += SLAP_SASL_PROP_COUNT - 1;
203 } else if ( !(sl->flags & SASL_AUXPROP_AUTHZID ) )
206 if ( sl->list[i].values ) {
207 if ( !(sl->flags & SASL_AUXPROP_OVERRIDE) ) continue;
210 rc = slap_str2ad( name, &ad, &text );
211 if ( rc != LDAP_SUCCESS ) {
212 Debug( LDAP_DEBUG_TRACE,
213 "slap_ap_lookup: str2ad(%s): %s\n", name, text, 0 );
217 /* If it's the rootdn and a rootpw was present, we already set
218 * it so don't override it here.
220 if ( ad == slap_schema.si_ad_userPassword && sl->list[i].values &&
221 be_isroot_dn( op->o_bd, &op->o_req_ndn ))
224 a = attr_find( rs->sr_entry->e_attrs, ad );
226 if ( ! access_allowed( op, rs->sr_entry, ad, NULL, ACL_AUTH, NULL ) ) {
229 if ( sl->list[i].values && ( sl->flags & SASL_AUXPROP_OVERRIDE ) ) {
230 sl->sparams->utils->prop_erase( sl->sparams->propctx,
233 for ( bv = a->a_vals; bv->bv_val; bv++ ) {
234 /* ITS#3846 don't give hashed passwords to SASL */
235 if ( ad == slap_schema.si_ad_userPassword &&
236 bv->bv_val[0] == '{' /*}*/ )
238 if ( lutil_passwd_scheme( bv->bv_val ) ) {
239 /* If it's not a recognized scheme, just assume it's
240 * a cleartext password that happened to include brackets.
242 * If it's a recognized scheme, skip this value, unless the
243 * scheme is {CLEARTEXT}. In that case, skip over the
244 * scheme name and use the remainder. If there is nothing
245 * past the scheme name, skip this value.
247 #ifdef SLAPD_CLEARTEXT
248 if ( !strncasecmp( bv->bv_val, sc_cleartext.bv_val,
249 sc_cleartext.bv_len )) {
251 cbv.bv_len = bv->bv_len - sc_cleartext.bv_len;
252 if ( cbv.bv_len > 0 ) {
253 cbv.bv_val = bv->bv_val + sc_cleartext.bv_len;
254 sl->sparams->utils->prop_set( sl->sparams->propctx,
255 sl->list[i].name, cbv.bv_val, cbv.bv_len );
262 sl->sparams->utils->prop_set( sl->sparams->propctx,
263 sl->list[i].name, bv->bv_val, bv->bv_len );
269 #if SASL_VERSION_FULL >= 0x020118
276 sasl_server_params_t *sparams,
281 OperationBuffer opbuf = {{ NULL }};
282 Operation *op = (Operation *)&opbuf;
284 Connection *conn = NULL;
286 int rc = LDAP_SUCCESS;
287 #ifdef SLAP_AUXPROP_DONTUSECOPY
289 BackendDB *dontUseCopy_bd = NULL;
290 #endif /* SLAP_AUXPROP_DONTUSECOPY */
292 sl.list = sparams->utils->prop_get( sparams->propctx );
293 sl.sparams = sparams;
296 /* Find our DN and conn first */
297 for( i = 0; sl.list[i].name; i++ ) {
298 if ( sl.list[i].name[0] == '*' ) {
299 if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_CONN] ) ) {
300 if ( sl.list[i].values && sl.list[i].values[0] )
301 AC_MEMCPY( &conn, sl.list[i].values[0], sizeof( conn ) );
304 if ( flags & SASL_AUXPROP_AUTHZID ) {
305 if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHZLEN] )) {
306 if ( sl.list[i].values && sl.list[i].values[0] )
307 AC_MEMCPY( &op->o_req_ndn.bv_len, sl.list[i].values[0],
308 sizeof( op->o_req_ndn.bv_len ) );
309 } else if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHZ] )) {
310 if ( sl.list[i].values )
311 op->o_req_ndn.bv_val = (char *)sl.list[i].values[0];
316 if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHCLEN] )) {
317 if ( sl.list[i].values && sl.list[i].values[0] )
318 AC_MEMCPY( &op->o_req_ndn.bv_len, sl.list[i].values[0],
319 sizeof( op->o_req_ndn.bv_len ) );
320 } else if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHC] ) ) {
321 if ( sl.list[i].values ) {
322 op->o_req_ndn.bv_val = (char *)sl.list[i].values[0];
323 if ( !(flags & SASL_AUXPROP_AUTHZID) )
327 #ifdef SLAP_AUXPROP_DONTUSECOPY
328 if ( slap_dontUseCopy_propnames != NULL ) {
331 ber_str2bv( &sl.list[i].name[1], 0, 1, &bv );
332 for ( j = 0; !BER_BVISNULL( &slap_dontUseCopy_propnames[ j ]); j++ ) {
333 if ( bvmatch( &bv, &slap_dontUseCopy_propnames[ j ] ) ) {
339 #endif /* SLAP_AUXPROP_DONTUSECOPY */
343 /* Now see what else needs to be fetched */
344 for( i = 0; sl.list[i].name; i++ ) {
345 const char *name = sl.list[i].name;
347 if ( name[0] == '*' ) {
348 if ( flags & SASL_AUXPROP_AUTHZID ) continue;
349 /* Skip our private properties */
350 if ( !strcmp( name, slap_propnames[0] )) {
351 i += SLAP_SASL_PROP_COUNT - 1;
355 } else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
358 if ( sl.list[i].values ) {
359 if ( !(flags & SASL_AUXPROP_OVERRIDE) ) continue;
366 slap_callback cb = { NULL, sasl_ap_lookup, NULL, NULL };
370 op->o_bd = select_backend( &op->o_req_ndn, 1 );
373 /* For rootdn, see if we can use the rootpw */
374 if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) &&
375 !BER_BVISEMPTY( &op->o_bd->be_rootpw )) {
376 struct berval cbv = BER_BVNULL;
378 /* If there's a recognized scheme, see if it's CLEARTEXT */
379 if ( lutil_passwd_scheme( op->o_bd->be_rootpw.bv_val )) {
380 if ( !strncasecmp( op->o_bd->be_rootpw.bv_val,
381 sc_cleartext.bv_val, sc_cleartext.bv_len )) {
383 /* If it's CLEARTEXT, skip past scheme spec */
384 cbv.bv_len = op->o_bd->be_rootpw.bv_len -
387 cbv.bv_val = op->o_bd->be_rootpw.bv_val +
391 /* No scheme, use the whole value */
393 cbv = op->o_bd->be_rootpw;
395 if ( !BER_BVISEMPTY( &cbv )) {
396 for( i = 0; sl.list[i].name; i++ ) {
397 const char *name = sl.list[i].name;
399 if ( name[0] == '*' ) {
400 if ( flags & SASL_AUXPROP_AUTHZID ) continue;
402 } else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
405 if ( !strcasecmp(name,"userPassword") ) {
406 sl.sparams->utils->prop_set( sl.sparams->propctx,
407 sl.list[i].name, cbv.bv_val, cbv.bv_len );
414 #ifdef SLAP_AUXPROP_DONTUSECOPY
415 if ( SLAP_SHADOW( op->o_bd ) && dontUseCopy ) {
416 dontUseCopy_bd = op->o_bd;
417 op->o_bd = frontendDB;
421 #endif /* SLAP_AUXPROP_DONTUSECOPY */
423 if ( op->o_bd->be_search ) {
424 SlapReply rs = {REP_RESULT};
425 #ifdef SLAP_AUXPROP_DONTUSECOPY
426 LDAPControl **save_ctrls = NULL, c;
427 int save_dontUseCopy;
428 #endif /* SLAP_AUXPROP_DONTUSECOPY */
430 op->o_hdr = conn->c_sasl_bindop->o_hdr;
431 op->o_controls = opbuf.ob_controls;
432 op->o_tag = LDAP_REQ_SEARCH;
433 op->o_dn = conn->c_ndn;
434 op->o_ndn = conn->c_ndn;
435 op->o_callback = &cb;
436 slap_op_time( &op->o_time, &op->o_tincr );
437 op->o_do_not_cache = 1;
438 op->o_is_auth_check = 1;
439 op->o_req_dn = op->o_req_ndn;
440 op->ors_scope = LDAP_SCOPE_BASE;
441 op->ors_deref = LDAP_DEREF_NEVER;
442 op->ors_tlimit = SLAP_NO_LIMIT;
444 op->ors_filter = &generic_filter;
445 op->ors_filterstr = generic_filterstr;
446 op->o_authz = conn->c_authz;
447 /* FIXME: we want all attributes, right? */
448 op->ors_attrs = NULL;
450 #ifdef SLAP_AUXPROP_DONTUSECOPY
452 save_dontUseCopy = op->o_dontUseCopy;
453 if ( !op->o_dontUseCopy ) {
455 save_ctrls = op->o_ctrls;
457 for ( ; op->o_ctrls[ cnt ]; cnt++ )
460 op->o_ctrls = op->o_tmpcalloc( sizeof(LDAPControl *), cnt + 2, op->o_tmpmemctx );
462 for ( cnt = 0; save_ctrls[ cnt ]; cnt++ ) {
463 op->o_ctrls[ cnt ] = save_ctrls[ cnt ];
466 c.ldctl_oid = LDAP_CONTROL_DONTUSECOPY;
467 c.ldctl_iscritical = 1;
468 BER_BVZERO( &c.ldctl_value );
469 op->o_ctrls[ cnt ] = &c;
471 op->o_dontUseCopy = SLAP_CONTROL_CRITICAL;
473 #endif /* SLAP_AUXPROP_DONTUSECOPY */
475 rc = op->o_bd->be_search( op, &rs );
477 #ifdef SLAP_AUXPROP_DONTUSECOPY
479 if ( save_ctrls != op->o_ctrls ) {
480 op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
481 op->o_ctrls = save_ctrls;
482 op->o_dontUseCopy = save_dontUseCopy;
485 if ( rs.sr_err == LDAP_UNAVAILABLE && slap_dontUseCopy_ignore )
487 op->o_bd = dontUseCopy_bd;
489 goto retry_dontUseCopy;
492 #endif /* SLAP_AUXPROP_DONTUSECOPY */
496 #if SASL_VERSION_FULL >= 0x020118
497 return rc != LDAP_SUCCESS ? SASL_FAIL : SASL_OK;
501 #if SASL_VERSION_FULL >= 0x020110
505 sasl_server_params_t *sparams,
506 struct propctx *prctx,
512 SlapReply rs = {REP_RESULT};
515 Connection *conn = NULL;
516 const struct propval *pr;
517 Modifications *modlist = NULL, **modtail = &modlist, *mod;
518 slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
519 char textbuf[SLAP_TEXT_BUFLEN];
521 size_t textlen = sizeof(textbuf);
522 #ifdef SLAP_AUXPROP_DONTUSECOPY
524 BackendDB *dontUseCopy_bd = NULL;
525 #endif /* SLAP_AUXPROP_DONTUSECOPY */
527 /* just checking if we are enabled */
528 if (!prctx) return SASL_OK;
530 if (!sparams || !user) return SASL_BADPARAM;
532 pr = sparams->utils->prop_get( sparams->propctx );
534 /* Find our DN and conn first */
535 for( i = 0; pr[i].name; i++ ) {
536 if ( pr[i].name[0] == '*' ) {
537 if ( !strcmp( pr[i].name, slap_propnames[SLAP_SASL_PROP_CONN] ) ) {
538 if ( pr[i].values && pr[i].values[0] )
539 AC_MEMCPY( &conn, pr[i].values[0], sizeof( conn ) );
542 if ( !strcmp( pr[i].name, slap_propnames[SLAP_SASL_PROP_AUTHCLEN] )) {
543 if ( pr[i].values && pr[i].values[0] )
544 AC_MEMCPY( &op.o_req_ndn.bv_len, pr[i].values[0],
545 sizeof( op.o_req_ndn.bv_len ) );
546 } else if ( !strcmp( pr[i].name, slap_propnames[SLAP_SASL_PROP_AUTHC] ) ) {
548 op.o_req_ndn.bv_val = (char *)pr[i].values[0];
550 #ifdef SLAP_AUXPROP_DONTUSECOPY
553 ber_str2bv( &pr[i].name[1], 0, 1, &bv );
554 for ( j = 0; !BER_BVISNULL( &slap_dontUseCopy_propnames[ j ] ); j++ ) {
555 if ( bvmatch( &bv, &slap_dontUseCopy_propnames[ j ] ) ) {
561 #endif /* SLAP_AUXPROP_DONTUSECOPY */
564 if (!conn || !op.o_req_ndn.bv_val) return SASL_BADPARAM;
566 op.o_bd = select_backend( &op.o_req_ndn, 1 );
568 if ( !op.o_bd || !op.o_bd->be_modify ) return SASL_FAIL;
570 #ifdef SLAP_AUXPROP_DONTUSECOPY
571 if ( SLAP_SHADOW( op.o_bd ) && dontUseCopy ) {
572 dontUseCopy_bd = op.o_bd;
573 op.o_bd = frontendDB;
574 op.o_dontUseCopy = SLAP_CONTROL_CRITICAL;
576 #endif /* SLAP_AUXPROP_DONTUSECOPY */
578 pr = sparams->utils->prop_get( prctx );
579 if (!pr) return SASL_BADPARAM;
581 for (i=0; pr[i].name; i++);
582 if (!i) return SASL_BADPARAM;
584 for (i=0; pr[i].name; i++) {
585 mod = (Modifications *)ch_malloc( sizeof(Modifications) );
586 mod->sml_op = LDAP_MOD_REPLACE;
588 ber_str2bv( pr[i].name, 0, 0, &mod->sml_type );
589 mod->sml_numvals = pr[i].nvalues;
590 mod->sml_values = (struct berval *)ch_malloc( (pr[i].nvalues + 1) *
591 sizeof(struct berval));
592 for (j=0; j<pr[i].nvalues; j++) {
593 ber_str2bv( pr[i].values[j], 0, 1, &mod->sml_values[j]);
595 BER_BVZERO( &mod->sml_values[j] );
596 mod->sml_nvalues = NULL;
597 mod->sml_desc = NULL;
599 modtail = &mod->sml_next;
603 rc = slap_mods_check( &op, modlist, &text, textbuf, textlen, NULL );
605 if ( rc == LDAP_SUCCESS ) {
606 rc = slap_mods_no_user_mod_check( &op, modlist,
607 &text, textbuf, textlen );
609 if ( rc == LDAP_SUCCESS ) {
610 if ( conn->c_sasl_bindop ) {
611 op.o_hdr = conn->c_sasl_bindop->o_hdr;
614 memset( &oph, 0, sizeof(oph) );
615 operation_fake_init( conn, &op, ldap_pvt_thread_pool_context(), 0 );
617 op.o_tag = LDAP_REQ_MODIFY;
618 op.o_ndn = op.o_req_ndn;
620 slap_op_time( &op.o_time, &op.o_tincr );
621 op.o_do_not_cache = 1;
622 op.o_is_auth_check = 1;
623 op.o_req_dn = op.o_req_ndn;
624 op.orm_modlist = modlist;
627 rc = op.o_bd->be_modify( &op, &rs );
629 #ifdef SLAP_AUXPROP_DONTUSECOPY
631 rs.sr_err == LDAP_UNAVAILABLE &&
632 slap_dontUseCopy_ignore )
634 op.o_bd = dontUseCopy_bd;
635 op.o_dontUseCopy = SLAP_CONTROL_NONE;
637 goto retry_dontUseCopy;
639 #endif /* SLAP_AUXPROP_DONTUSECOPY */
642 slap_mods_free( modlist, 1 );
643 return rc != LDAP_SUCCESS ? SASL_FAIL : SASL_OK;
645 #endif /* SASL_VERSION_FULL >= 2.1.16 */
647 static sasl_auxprop_plug_t slap_auxprop_plugin = {
650 NULL, /* glob_context */
651 NULL, /* auxprop_free */
654 #if SASL_VERSION_FULL >= 0x020110
655 slap_auxprop_store /* the declaration of this member changed
656 * in cyrus SASL from 2.1.15 to 2.1.16 */
664 const sasl_utils_t *utils,
667 sasl_auxprop_plug_t **plug,
668 const char *plugname)
670 if ( !out_version || !plug ) return SASL_BADPARAM;
672 if ( max_version < SASL_AUXPROP_PLUG_VERSION ) return SASL_BADVERS;
674 *out_version = SASL_AUXPROP_PLUG_VERSION;
675 *plug = &slap_auxprop_plugin;
679 /* Convert a SASL authcid or authzid into a DN. Store the DN in an
680 * auxiliary property, so that we can refer to it in sasl_authorize
681 * without interfering with anything else. Also, the SASL username
682 * buffer is constrained to 256 characters, and our DNs could be
683 * much longer (SLAP_LDAPDN_MAXLEN, currently set to 8192)
686 slap_sasl_canonicalize(
692 const char *user_realm,
697 Connection *conn = (Connection *)context;
698 struct propctx *props = sasl_auxprop_getctx( sconn );
699 struct propval auxvals[ SLAP_SASL_PROP_COUNT ] = { { 0 } };
702 const char *names[2];
707 Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
708 conn ? (long) conn->c_connid : -1L,
709 (flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
710 in ? in : "<empty>");
712 /* If name is too big, just truncate. We don't care, we're
713 * using DNs, not the usernames.
715 if ( inlen > out_max )
718 /* This is a Simple Bind using SPASSWD. That means the in-directory
719 * userPassword of the Binding user already points at SASL, so it
720 * cannot be used to actually satisfy a password comparison. Just
721 * ignore it, some other mech will process it.
723 if ( !conn->c_sasl_bindop ||
724 conn->c_sasl_bindop->orb_method != LDAP_AUTH_SASL ) goto done;
726 /* See if we need to add request, can only do it once */
727 prop_getnames( props, slap_propnames, auxvals );
728 if ( !auxvals[0].name )
729 prop_request( props, slap_propnames );
731 if ( flags & SASL_CU_AUTHID )
732 which = SLAP_SASL_PROP_AUTHCLEN;
734 which = SLAP_SASL_PROP_AUTHZLEN;
736 /* Need to store the Connection for auxprop_lookup */
737 if ( !auxvals[SLAP_SASL_PROP_CONN].values ) {
738 names[0] = slap_propnames[SLAP_SASL_PROP_CONN];
740 prop_set( props, names[0], (char *)&conn, sizeof( conn ) );
743 /* Already been here? */
744 if ( auxvals[which].values )
747 /* Normally we require an authzID to have a u: or dn: prefix.
748 * However, SASL frequently gives us an authzID that is just
749 * an exact copy of the authcID, without a prefix. We need to
750 * detect and allow this condition. If SASL calls canonicalize
751 * with SASL_CU_AUTHID|SASL_CU_AUTHZID this is a no-brainer.
752 * But if it's broken into two calls, we need to remember the
753 * authcID so that we can compare the authzID later. We store
754 * the authcID temporarily in conn->c_sasl_dn. We necessarily
755 * finish Canonicalizing before Authorizing, so there is no
756 * conflict with slap_sasl_authorize's use of this temp var.
758 * The SASL EXTERNAL mech is backwards from all the other mechs,
759 * it does authzID before the authcID. If we see that authzID
760 * has already been done, don't do anything special with authcID.
762 if ( flags == SASL_CU_AUTHID && !auxvals[SLAP_SASL_PROP_AUTHZ].values ) {
763 conn->c_sasl_dn.bv_val = (char *) in;
764 conn->c_sasl_dn.bv_len = 0;
765 } else if ( flags == SASL_CU_AUTHZID && conn->c_sasl_dn.bv_val ) {
766 rc = strcmp( in, conn->c_sasl_dn.bv_val );
767 conn->c_sasl_dn.bv_val = NULL;
768 /* They were equal, no work needed */
769 if ( !rc ) goto done;
772 bvin.bv_val = (char *)in;
774 rc = slap_sasl_getdn( conn, NULL, &bvin, (char *)user_realm, &dn,
775 (flags & SASL_CU_AUTHID) ? SLAP_GETDN_AUTHCID : SLAP_GETDN_AUTHZID );
776 if ( rc != LDAP_SUCCESS ) {
777 sasl_seterror( sconn, 0, ldap_err2string( rc ) );
781 names[0] = slap_propnames[which];
783 prop_set( props, names[0], (char *)&dn.bv_len, sizeof( dn.bv_len ) );
786 names[0] = slap_propnames[which];
787 prop_set( props, names[0], dn.bv_val, dn.bv_len );
789 Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
790 conn ? (long) conn->c_connid : -1L, names[0]+1,
791 dn.bv_val ? dn.bv_val : "<EMPTY>" );
793 /* Not needed any more, SASL has copied it */
794 if ( conn && conn->c_sasl_bindop )
795 conn->c_sasl_bindop->o_tmpfree( dn.bv_val, conn->c_sasl_bindop->o_tmpmemctx );
798 AC_MEMCPY( out, in, inlen );
810 char *requested_user,
814 const char *def_realm,
816 struct propctx *props)
818 Connection *conn = (Connection *)context;
820 * (SLAP_SASL_PROP_COUNT - 1) because we skip "conn",
821 * + 1 for NULL termination?
823 struct propval auxvals[ SLAP_SASL_PROP_COUNT ] = { { 0 } };
824 struct berval authcDN, authzDN = BER_BVNULL;
827 /* Simple Binds don't support proxy authorization, ignore it */
828 if ( !conn->c_sasl_bindop ||
829 conn->c_sasl_bindop->orb_method != LDAP_AUTH_SASL ) return SASL_OK;
831 Debug( LDAP_DEBUG_ARGS, "SASL proxy authorize [conn=%ld]: "
832 "authcid=\"%s\" authzid=\"%s\"\n",
833 conn ? (long) conn->c_connid : -1L, auth_identity, requested_user );
834 if ( conn->c_sasl_dn.bv_val ) {
835 BER_BVZERO( &conn->c_sasl_dn );
838 /* Skip SLAP_SASL_PROP_CONN */
839 prop_getnames( props, slap_propnames+1, auxvals );
841 /* Should not happen */
842 if ( !auxvals[0].values ) {
843 sasl_seterror( sconn, 0, "invalid authcid" );
847 AC_MEMCPY( &authcDN.bv_len, auxvals[0].values[0], sizeof(authcDN.bv_len) );
848 authcDN.bv_val = auxvals[1].values ? (char *)auxvals[1].values[0] : NULL;
849 conn->c_sasl_dn = authcDN;
851 /* Nothing to do if no authzID was given */
852 if ( !auxvals[2].name || !auxvals[2].values ) {
856 AC_MEMCPY( &authzDN.bv_len, auxvals[2].values[0], sizeof(authzDN.bv_len) );
857 authzDN.bv_val = auxvals[3].values ? (char *)auxvals[3].values[0] : NULL;
859 rc = slap_sasl_authorized( conn->c_sasl_bindop, &authcDN, &authzDN );
860 if ( rc != LDAP_SUCCESS ) {
861 Debug( LDAP_DEBUG_TRACE, "SASL Proxy Authorize [conn=%ld]: "
862 "proxy authorization disallowed (%d)\n",
863 conn ? (long) conn->c_connid : -1L, rc, 0 );
865 sasl_seterror( sconn, 0, "not authorized" );
869 /* FIXME: we need yet another dup because slap_sasl_getdn()
870 * is using the bind operation slab */
871 ber_dupbv( &conn->c_sasl_authz_dn, &authzDN );
874 if (conn->c_sasl_bindop) {
875 Statslog( LDAP_DEBUG_STATS,
876 "%s BIND authcid=\"%s\" authzid=\"%s\"\n",
877 conn->c_sasl_bindop->o_log_prefix,
878 auth_identity, requested_user, 0, 0 );
881 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
882 " proxy authorization allowed authzDN=\"%s\"\n",
883 conn ? (long) conn->c_connid : -1L,
884 authzDN.bv_val ? authzDN.bv_val : "", 0 );
889 slap_sasl_err2ldap( int saslerr )
893 /* map SASL errors to LDAP resultCode returned by:
895 * SASL_OK, SASL_NOMEM
897 * SASL_OK, SASL_CONTINUE, SASL_TRANS, SASL_BADPARAM, SASL_BADPROT,
899 * sasl_server_start()
902 * SASL_OK, SASL_BADPARAM
910 rc = LDAP_SASL_BIND_IN_PROGRESS;
917 rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
923 rc = LDAP_INVALID_CREDENTIALS;
926 rc = LDAP_INSUFFICIENT_ACCESS;
930 rc = LDAP_INAPPROPRIATE_AUTH;
934 rc = LDAP_UNAVAILABLE;
937 rc = LDAP_UNWILLING_TO_PERFORM;
949 static struct berval sasl_pwscheme = BER_BVC("{SASL}");
952 const struct berval *sc,
953 const struct berval * passwd,
954 const struct berval * cred,
959 void *ctx, *sconn = NULL;
961 for( i=0; i<cred->bv_len; i++) {
962 if(cred->bv_val[i] == '\0') {
963 return LUTIL_PASSWD_ERR; /* NUL character in password */
967 if( cred->bv_val[i] != '\0' ) {
968 return LUTIL_PASSWD_ERR; /* cred must behave like a string */
971 for( i=0; i<passwd->bv_len; i++) {
972 if(passwd->bv_val[i] == '\0') {
973 return LUTIL_PASSWD_ERR; /* NUL character in password */
977 if( passwd->bv_val[i] != '\0' ) {
978 return LUTIL_PASSWD_ERR; /* passwd must behave like a string */
981 rtn = LUTIL_PASSWD_ERR;
983 ctx = ldap_pvt_thread_pool_context();
984 ldap_pvt_thread_pool_getkey( ctx, (void *)slap_sasl_bind, &sconn, NULL );
986 if( sconn != NULL ) {
988 sc = sasl_checkpass( sconn,
989 passwd->bv_val, passwd->bv_len,
990 cred->bv_val, cred->bv_len );
991 rtn = ( sc != SASL_OK ) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
996 #endif /* SLAPD_SPASSWD */
998 #endif /* HAVE_CYRUS_SASL */
1000 #ifdef ENABLE_REWRITE
1002 typedef struct slapd_map_data {
1004 struct berval filter;
1005 AttributeName attrs[2];
1010 slapd_rw_config( const char *fname, int lineno, int argc, char **argv )
1012 slapd_map_data *ret = NULL;
1013 LDAPURLDesc *lud = NULL;
1015 AttributeDescription *ad = NULL;
1017 struct berval dn, ndn;
1020 Debug( LDAP_DEBUG_ANY,
1021 "[%s:%d] slapd map needs URI\n",
1027 if ( strncasecmp( uri, "uri=", STRLENOF( "uri=" ) ) == 0 ) {
1028 uri += STRLENOF( "uri=" );
1031 if ( ldap_url_parse( uri, &lud ) != LDAP_URL_SUCCESS ) {
1032 Debug( LDAP_DEBUG_ANY,
1033 "[%s:%d] illegal URI '%s'\n",
1034 fname, lineno, uri );
1038 if ( strcasecmp( lud->lud_scheme, "ldap" )) {
1039 Debug( LDAP_DEBUG_ANY,
1040 "[%s:%d] illegal URI scheme '%s'\n",
1041 fname, lineno, lud->lud_scheme );
1045 if (( lud->lud_host && lud->lud_host[0] ) || lud->lud_exts
1047 Debug( LDAP_DEBUG_ANY,
1048 "[%s:%d] illegal URI '%s'\n",
1049 fname, lineno, uri );
1053 if ( lud->lud_attrs ) {
1054 if ( lud->lud_attrs[1] ) {
1055 Debug( LDAP_DEBUG_ANY,
1056 "[%s:%d] only one attribute allowed in URI\n",
1060 if ( strcasecmp( lud->lud_attrs[0], "dn" ) &&
1061 strcasecmp( lud->lud_attrs[0], "entryDN" )) {
1063 rc = slap_str2ad( lud->lud_attrs[0], &ad, &text );
1068 ber_str2bv( lud->lud_dn, 0, 0, &dn );
1069 if ( dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL ))
1072 if ( lud->lud_filter ) {
1073 flen = strlen( lud->lud_filter ) + 1;
1075 ret = ch_malloc( sizeof( slapd_map_data ) + flen );
1078 ret->filter.bv_val = (char *)(ret+1);
1079 ret->filter.bv_len = flen - 1;
1080 strcpy( ret->filter.bv_val, lud->lud_filter );
1082 BER_BVZERO( &ret->filter );
1084 ret->scope = lud->lud_scope;
1086 ret->attrs[0].an_name = ad->ad_cname;
1088 BER_BVZERO( &ret->attrs[0].an_name );
1090 ret->attrs[0].an_desc = ad;
1091 BER_BVZERO( &ret->attrs[1].an_name );
1093 ldap_free_urldesc( lud );
1097 struct slapd_rw_info {
1098 slapd_map_data *si_data;
1099 struct berval si_val;
1103 slapd_rw_cb( Operation *op, SlapReply *rs )
1105 if ( rs->sr_type == REP_SEARCH ) {
1106 struct slapd_rw_info *si = op->o_callback->sc_private;
1108 if ( si->si_data->attrs[0].an_desc ) {
1111 a = attr_find( rs->sr_entry->e_attrs,
1112 si->si_data->attrs[0].an_desc );
1114 ber_dupbv( &si->si_val, a->a_vals );
1117 ber_dupbv( &si->si_val, &rs->sr_entry->e_name );
1120 return LDAP_SUCCESS;
1124 slapd_rw_apply( void *private, const char *filter, struct berval *val )
1126 slapd_map_data *sl = private;
1127 slap_callback cb = { NULL };
1128 Connection conn = {0};
1129 OperationBuffer opbuf;
1132 SlapReply rs = {REP_RESULT};
1133 struct slapd_rw_info si;
1137 thrctx = ldap_pvt_thread_pool_context();
1138 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
1141 op->o_tag = LDAP_REQ_SEARCH;
1142 op->o_req_dn = op->o_req_ndn = sl->base;
1143 op->o_bd = select_backend( &op->o_req_ndn, 1 );
1148 BER_BVZERO( &si.si_val );
1149 op->ors_scope = sl->scope;
1150 op->ors_deref = LDAP_DEREF_NEVER;
1152 op->ors_tlimit = SLAP_NO_LIMIT;
1153 if ( sl->attrs[0].an_desc ) {
1154 op->ors_attrs = sl->attrs;
1156 op->ors_attrs = slap_anlist_no_attrs;
1159 rc = strlen( filter );
1163 rc += sl->filter.bv_len;
1164 ptr = op->ors_filterstr.bv_val = op->o_tmpalloc( rc + 1, op->o_tmpmemctx );
1165 if ( sl->filter.bv_len ) {
1166 ptr = lutil_strcopy( ptr, sl->filter.bv_val );
1171 strcpy( ptr, filter );
1173 op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1174 if ( !op->ors_filter ) {
1175 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1179 op->ors_attrsonly = 0;
1180 op->o_dn = op->o_bd->be_rootdn;
1181 op->o_ndn = op->o_bd->be_rootndn;
1182 op->o_do_not_cache = 1;
1184 cb.sc_response = slapd_rw_cb;
1185 cb.sc_private = &si;
1186 op->o_callback = &cb;
1188 rc = op->o_bd->be_search( op, &rs );
1189 if ( rc == LDAP_SUCCESS && !BER_BVISNULL( &si.si_val )) {
1191 rc = REWRITE_SUCCESS;
1193 if ( !BER_BVISNULL( &si.si_val )) {
1194 ch_free( si.si_val.bv_val );
1198 filter_free_x( op, op->ors_filter, 1 );
1199 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1204 slapd_rw_destroy( void *private )
1206 slapd_map_data *md = private;
1208 assert( private != NULL );
1210 ch_free( md->base.bv_val );
1211 ch_free( md->filter.bv_val );
1217 static const rewrite_mapper slapd_mapper = {
1225 int slap_sasl_init( void )
1227 #ifdef HAVE_CYRUS_SASL
1229 static sasl_callback_t server_callbacks[] = {
1230 { SASL_CB_LOG, &slap_sasl_log, NULL },
1231 { SASL_CB_GETOPT, &slap_sasl_getopt, NULL },
1232 { SASL_CB_LIST_END, NULL, NULL }
1236 #ifdef ENABLE_REWRITE
1237 rewrite_mapper_register( &slapd_mapper );
1240 #ifdef HAVE_CYRUS_SASL
1241 #ifdef HAVE_SASL_VERSION
1242 /* stringify the version number, sasl.h doesn't do it for us */
1243 #define VSTR0(maj, min, pat) #maj "." #min "." #pat
1244 #define VSTR(maj, min, pat) VSTR0(maj, min, pat)
1245 #define SASL_VERSION_STRING VSTR(SASL_VERSION_MAJOR, SASL_VERSION_MINOR, \
1248 sasl_version( NULL, &rc );
1249 if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
1250 (rc & 0xffff) < SASL_VERSION_STEP)
1252 char version[sizeof("xxx.xxx.xxxxx")];
1253 sprintf( version, "%u.%d.%d", (unsigned)rc >> 24, (rc >> 16) & 0xff,
1255 Debug( LDAP_DEBUG_ANY, "slap_sasl_init: SASL library version mismatch:"
1256 " expected %s, got %s\n",
1257 SASL_VERSION_STRING, version, 0 );
1263 ldap_pvt_sasl_mutex_new,
1264 ldap_pvt_sasl_mutex_lock,
1265 ldap_pvt_sasl_mutex_unlock,
1266 ldap_pvt_sasl_mutex_dispose );
1268 generic_filter.f_desc = slap_schema.si_ad_objectClass;
1270 rc = sasl_auxprop_add_plugin( "slapd", slap_auxprop_init );
1271 if( rc != SASL_OK ) {
1272 Debug( LDAP_DEBUG_ANY, "slap_sasl_init: auxprop add plugin failed\n",
1277 /* should provide callbacks for logging */
1278 /* server name should be configurable */
1279 rc = sasl_server_init( server_callbacks, "slapd" );
1281 if( rc != SASL_OK ) {
1282 Debug( LDAP_DEBUG_ANY, "slap_sasl_init: server init failed\n",
1288 #ifdef SLAPD_SPASSWD
1289 lutil_passwd_add( &sasl_pwscheme, chk_sasl, NULL );
1292 Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
1295 /* default security properties */
1296 memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
1297 sasl_secprops.max_ssf = INT_MAX;
1298 sasl_secprops.maxbufsize = 65536;
1299 sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
1305 int slap_sasl_destroy( void )
1307 #ifdef HAVE_CYRUS_SASL
1310 #ifdef SLAP_AUXPROP_DONTUSECOPY
1311 if ( slap_dontUseCopy_propnames ) {
1312 ber_bvarray_free( slap_dontUseCopy_propnames );
1313 slap_dontUseCopy_propnames = NULL;
1315 #endif /* SLAP_AUXPROP_DONTUSECOPY */
1324 slap_sasl_peer2ipport( struct berval *peer )
1328 *addr = &peer->bv_val[ STRLENOF( "IP=" ) ];
1329 ber_len_t plen = peer->bv_len - STRLENOF( "IP=" );
1332 if ( addr[0] == '[' ) {
1336 ipport = ch_strdup( &addr[isv6] );
1338 /* Convert IPv6/IPv4 addresses to address;port syntax. */
1339 p = strrchr( ipport, ':' );
1343 assert( p[-1] == ']' );
1344 AC_MEMCPY( &p[-1], p, plen - ( p - ipport ) + 1 );
1347 } else if ( isv6 ) {
1350 assert( addr[plen] == ']' );
1357 int slap_sasl_open( Connection *conn, int reopen )
1359 int sc = LDAP_SUCCESS;
1360 #ifdef HAVE_CYRUS_SASL
1363 sasl_conn_t *ctx = NULL;
1364 sasl_callback_t *session_callbacks;
1365 char *ipremoteport = NULL, *iplocalport = NULL;
1367 assert( conn->c_sasl_authctx == NULL );
1370 assert( conn->c_sasl_extra == NULL );
1373 SLAP_CALLOC( 5, sizeof(sasl_callback_t));
1374 if( session_callbacks == NULL ) {
1375 Debug( LDAP_DEBUG_ANY,
1376 "slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
1379 conn->c_sasl_extra = session_callbacks;
1381 session_callbacks[cb=0].id = SASL_CB_LOG;
1382 session_callbacks[cb].proc = &slap_sasl_log;
1383 session_callbacks[cb++].context = conn;
1385 session_callbacks[cb].id = SASL_CB_PROXY_POLICY;
1386 session_callbacks[cb].proc = &slap_sasl_authorize;
1387 session_callbacks[cb++].context = conn;
1389 session_callbacks[cb].id = SASL_CB_CANON_USER;
1390 session_callbacks[cb].proc = &slap_sasl_canonicalize;
1391 session_callbacks[cb++].context = conn;
1393 session_callbacks[cb].id = SASL_CB_LIST_END;
1394 session_callbacks[cb].proc = NULL;
1395 session_callbacks[cb++].context = NULL;
1397 session_callbacks = conn->c_sasl_extra;
1400 conn->c_sasl_layers = 0;
1402 /* create new SASL context */
1403 if ( conn->c_sock_name.bv_len != 0 &&
1404 strncmp( conn->c_sock_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
1406 iplocalport = slap_sasl_peer2ipport( &conn->c_sock_name );
1409 if ( conn->c_peer_name.bv_len != 0 &&
1410 strncmp( conn->c_peer_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
1412 ipremoteport = slap_sasl_peer2ipport( &conn->c_peer_name );
1415 sc = sasl_server_new( "ldap", sasl_host, global_realm,
1416 iplocalport, ipremoteport, session_callbacks, SASL_SUCCESS_DATA, &ctx );
1417 if ( iplocalport != NULL ) {
1418 ch_free( iplocalport );
1420 if ( ipremoteport != NULL ) {
1421 ch_free( ipremoteport );
1424 if( sc != SASL_OK ) {
1425 Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
1431 conn->c_sasl_authctx = ctx;
1433 if( sc == SASL_OK ) {
1434 sc = sasl_setprop( ctx,
1435 SASL_SEC_PROPS, &sasl_secprops );
1437 if( sc != SASL_OK ) {
1438 Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
1441 slap_sasl_close( conn );
1446 sc = slap_sasl_err2ldap( sc );
1448 #elif defined(SLAP_BUILTIN_SASL)
1449 /* built-in SASL implementation */
1450 SASL_CTX *ctx = (SASL_CTX *) SLAP_MALLOC(sizeof(SASL_CTX));
1451 if( ctx == NULL ) return -1;
1453 ctx->sc_external_ssf = 0;
1454 BER_BVZERO( &ctx->sc_external_id );
1456 conn->c_sasl_authctx = ctx;
1462 int slap_sasl_external(
1465 struct berval *auth_id )
1467 #ifdef HAVE_CYRUS_SASL
1469 sasl_conn_t *ctx = conn->c_sasl_authctx;
1470 sasl_ssf_t sasl_ssf = ssf;
1472 if ( ctx == NULL ) {
1473 return LDAP_UNAVAILABLE;
1476 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &sasl_ssf );
1478 if ( sc != SASL_OK ) {
1482 sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL,
1483 auth_id ? auth_id->bv_val : NULL );
1485 if ( sc != SASL_OK ) {
1488 #elif defined(SLAP_BUILTIN_SASL)
1489 /* built-in SASL implementation */
1490 SASL_CTX *ctx = conn->c_sasl_authctx;
1491 if ( ctx == NULL ) return LDAP_UNAVAILABLE;
1493 ctx->sc_external_ssf = ssf;
1495 ctx->sc_external_id = *auth_id;
1496 BER_BVZERO( auth_id );
1498 BER_BVZERO( &ctx->sc_external_id );
1502 return LDAP_SUCCESS;
1505 int slap_sasl_reset( Connection *conn )
1507 return LDAP_SUCCESS;
1510 char ** slap_sasl_mechs( Connection *conn )
1512 char **mechs = NULL;
1514 #ifdef HAVE_CYRUS_SASL
1515 sasl_conn_t *ctx = conn->c_sasl_authctx;
1517 if( ctx == NULL ) ctx = conn->c_sasl_sockctx;
1521 SASL_CONST char *mechstr;
1523 sc = sasl_listmech( ctx,
1524 NULL, NULL, ",", NULL,
1525 &mechstr, NULL, NULL );
1527 if( sc != SASL_OK ) {
1528 Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
1534 mechs = ldap_str2charray( mechstr, "," );
1536 #elif defined(SLAP_BUILTIN_SASL)
1537 /* builtin SASL implementation */
1538 SASL_CTX *ctx = conn->c_sasl_authctx;
1539 if ( ctx != NULL && ctx->sc_external_id.bv_val ) {
1540 /* should check ssf */
1541 mechs = ldap_str2charray( "EXTERNAL", "," );
1548 int slap_sasl_close( Connection *conn )
1550 #ifdef HAVE_CYRUS_SASL
1551 sasl_conn_t *ctx = conn->c_sasl_authctx;
1554 sasl_dispose( &ctx );
1556 if ( conn->c_sasl_sockctx &&
1557 conn->c_sasl_authctx != conn->c_sasl_sockctx )
1559 ctx = conn->c_sasl_sockctx;
1560 sasl_dispose( &ctx );
1563 conn->c_sasl_authctx = NULL;
1564 conn->c_sasl_sockctx = NULL;
1565 conn->c_sasl_done = 0;
1567 free( conn->c_sasl_extra );
1568 conn->c_sasl_extra = NULL;
1570 #elif defined(SLAP_BUILTIN_SASL)
1571 SASL_CTX *ctx = conn->c_sasl_authctx;
1573 if( ctx->sc_external_id.bv_val ) {
1574 free( ctx->sc_external_id.bv_val );
1575 BER_BVZERO( &ctx->sc_external_id );
1578 conn->c_sasl_authctx = NULL;
1582 return LDAP_SUCCESS;
1585 int slap_sasl_bind( Operation *op, SlapReply *rs )
1587 #ifdef HAVE_CYRUS_SASL
1588 sasl_conn_t *ctx = op->o_conn->c_sasl_authctx;
1589 struct berval response;
1590 unsigned reslen = 0;
1593 Debug(LDAP_DEBUG_ARGS,
1594 "==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
1595 op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "",
1596 op->o_conn->c_sasl_bind_in_progress ? "<continuing>" :
1597 op->o_conn->c_sasl_bind_mech.bv_val,
1598 op->orb_cred.bv_len );
1601 send_ldap_error( op, rs, LDAP_UNAVAILABLE,
1602 "SASL unavailable on this session" );
1606 #define START( ctx, mech, cred, clen, resp, rlen, err ) \
1607 sasl_server_start( ctx, mech, cred, clen, resp, rlen )
1608 #define STEP( ctx, cred, clen, resp, rlen, err ) \
1609 sasl_server_step( ctx, cred, clen, resp, rlen )
1611 if ( !op->o_conn->c_sasl_bind_in_progress ) {
1612 /* If we already authenticated once, must use a new context */
1613 if ( op->o_conn->c_sasl_done ) {
1615 const char *authid = NULL;
1616 sasl_getprop( ctx, SASL_SSF_EXTERNAL, (void *)&ssf );
1617 sasl_getprop( ctx, SASL_AUTH_EXTERNAL, (void *)&authid );
1618 if ( authid ) authid = ch_strdup( authid );
1619 if ( ctx != op->o_conn->c_sasl_sockctx ) {
1620 sasl_dispose( &ctx );
1622 op->o_conn->c_sasl_authctx = NULL;
1624 slap_sasl_open( op->o_conn, 1 );
1625 ctx = op->o_conn->c_sasl_authctx;
1627 sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
1628 sasl_setprop( ctx, SASL_AUTH_EXTERNAL, authid );
1629 ch_free( (char *)authid );
1633 op->o_conn->c_sasl_bind_mech.bv_val,
1634 op->orb_cred.bv_val, op->orb_cred.bv_len,
1635 (SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
1639 op->orb_cred.bv_val, op->orb_cred.bv_len,
1640 (SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
1643 response.bv_len = reslen;
1645 if ( sc == SASL_OK ) {
1646 sasl_ssf_t *ssf = NULL;
1648 ber_dupbv_x( &op->orb_edn, &op->o_conn->c_sasl_dn, op->o_tmpmemctx );
1649 BER_BVZERO( &op->o_conn->c_sasl_dn );
1650 op->o_conn->c_sasl_done = 1;
1652 rs->sr_err = LDAP_SUCCESS;
1654 (void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
1655 op->orb_ssf = ssf ? *ssf : 0;
1659 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1660 op->o_conn->c_sasl_layers++;
1662 /* If there's an old layer, set sockctx to NULL to
1663 * tell connection_read() to wait for us to finish.
1664 * Otherwise there is a race condition: we have to
1665 * send the Bind response using the old security
1666 * context and then remove it before reading any
1669 if ( op->o_conn->c_sasl_sockctx ) {
1670 ctx = op->o_conn->c_sasl_sockctx;
1671 op->o_conn->c_sasl_sockctx = NULL;
1673 op->o_conn->c_sasl_sockctx = op->o_conn->c_sasl_authctx;
1675 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1678 /* Must send response using old security layer */
1679 rs->sr_sasldata = (response.bv_len ? &response : NULL);
1680 send_ldap_sasl( op, rs );
1682 /* Now dispose of the old security layer.
1685 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1686 ldap_pvt_sasl_remove( op->o_conn->c_sb );
1687 op->o_conn->c_sasl_sockctx = op->o_conn->c_sasl_authctx;
1688 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1689 sasl_dispose( &ctx );
1691 } else if ( sc == SASL_CONTINUE ) {
1692 rs->sr_err = LDAP_SASL_BIND_IN_PROGRESS,
1693 rs->sr_text = sasl_errdetail( ctx );
1694 rs->sr_sasldata = &response;
1695 send_ldap_sasl( op, rs );
1698 BER_BVZERO( &op->o_conn->c_sasl_dn );
1699 rs->sr_text = sasl_errdetail( ctx );
1700 rs->sr_err = slap_sasl_err2ldap( sc ),
1701 send_ldap_result( op, rs );
1704 Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rs->sr_err, 0, 0);
1706 #elif defined(SLAP_BUILTIN_SASL)
1707 /* built-in SASL implementation */
1708 SASL_CTX *ctx = op->o_conn->c_sasl_authctx;
1710 if ( ctx == NULL ) {
1711 send_ldap_error( op, rs, LDAP_OTHER,
1712 "Internal SASL Error" );
1714 } else if ( bvmatch( &ext_bv, &op->o_conn->c_sasl_bind_mech ) ) {
1717 if( op->orb_cred.bv_len ) {
1718 rs->sr_text = "proxy authorization not support";
1719 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1720 send_ldap_result( op, rs );
1723 op->orb_edn = ctx->sc_external_id;
1724 rs->sr_err = LDAP_SUCCESS;
1725 rs->sr_sasldata = NULL;
1726 send_ldap_sasl( op, rs );
1730 send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
1731 "requested SASL mechanism not supported" );
1734 send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
1735 "SASL not supported" );
1741 char* slap_sasl_secprops( const char *in )
1743 #ifdef HAVE_CYRUS_SASL
1744 int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
1746 return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
1748 return "SASL not supported";
1752 void slap_sasl_secprops_unparse( struct berval *bv )
1754 #ifdef HAVE_CYRUS_SASL
1755 ldap_pvt_sasl_secprops_unparse( &sasl_secprops, bv );
1759 #ifdef HAVE_CYRUS_SASL
1761 slap_sasl_setpass( Operation *op, SlapReply *rs )
1763 struct berval id = BER_BVNULL; /* needs to come from connection */
1764 struct berval new = BER_BVNULL;
1765 struct berval old = BER_BVNULL;
1767 assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );
1769 rs->sr_err = sasl_getprop( op->o_conn->c_sasl_authctx, SASL_USERNAME,
1770 (SASL_CONST void **)(char *)&id.bv_val );
1772 if( rs->sr_err != SASL_OK ) {
1773 rs->sr_text = "unable to retrieve SASL username";
1774 rs->sr_err = LDAP_OTHER;
1778 Debug( LDAP_DEBUG_ARGS, "==> slap_sasl_setpass: \"%s\"\n",
1779 id.bv_val ? id.bv_val : "", 0, 0 );
1781 rs->sr_err = slap_passwd_parse( op->ore_reqdata,
1782 NULL, &old, &new, &rs->sr_text );
1784 if( rs->sr_err != LDAP_SUCCESS ) {
1788 if( new.bv_len == 0 ) {
1789 slap_passwd_generate(&new);
1791 if( new.bv_len == 0 ) {
1792 rs->sr_text = "password generation failed.";
1793 rs->sr_err = LDAP_OTHER;
1797 rs->sr_rspdata = slap_passwd_return( &new );
1800 rs->sr_err = sasl_setpass( op->o_conn->c_sasl_authctx, id.bv_val,
1801 new.bv_val, new.bv_len, old.bv_val, old.bv_len, 0 );
1802 if( rs->sr_err != SASL_OK ) {
1803 rs->sr_text = sasl_errdetail( op->o_conn->c_sasl_authctx );
1805 switch(rs->sr_err) {
1807 rs->sr_err = LDAP_SUCCESS;
1817 rs->sr_err = LDAP_OTHER;
1823 #endif /* HAVE_CYRUS_SASL */
1825 /* Take any sort of identity string and return a DN with the "dn:" prefix. The
1826 * string returned in *dn is in its own allocated memory, and must be free'd
1827 * by the calling process. -Mark Adamson, Carnegie Mellon
1829 * The "dn:" prefix is no longer used anywhere inside slapd. It is only used
1830 * on strings passed in directly from SASL. -Howard Chu, Symas Corp.
1837 int slap_sasl_getdn( Connection *conn, Operation *op, struct berval *id,
1838 char *user_realm, struct berval *dn, int flags )
1840 int rc, is_dn = SET_NONE, do_norm = 1;
1841 struct berval dn2, *mech;
1843 assert( conn != NULL );
1844 assert( id != NULL );
1846 Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: conn %lu id=%s [len=%lu]\n",
1848 BER_BVISNULL( id ) ? "NULL" : ( BER_BVISEMPTY( id ) ? "<empty>" : id->bv_val ),
1849 BER_BVISNULL( id ) ? 0 : ( BER_BVISEMPTY( id ) ? 0 :
1850 (unsigned long) id->bv_len ) );
1853 op = conn->c_sasl_bindop;
1855 assert( op != NULL );
1859 if ( !BER_BVISNULL( id ) ) {
1860 /* Blatantly anonymous ID */
1861 static struct berval bv_anonymous = BER_BVC( "anonymous" );
1863 if ( ber_bvstrcasecmp( id, &bv_anonymous ) == 0 ) {
1864 return( LDAP_SUCCESS );
1868 /* FIXME: if empty, should we stop? */
1869 BER_BVSTR( id, "" );
1872 if ( !BER_BVISEMPTY( &conn->c_sasl_bind_mech ) ) {
1873 mech = &conn->c_sasl_bind_mech;
1875 mech = &conn->c_authmech;
1878 /* An authcID needs to be converted to authzID form. Set the
1879 * values directly into *dn; they will be normalized later. (and
1880 * normalizing always makes a new copy.) An ID from a TLS certificate
1881 * is already normalized, so copy it and skip normalization.
1883 if( flags & SLAP_GETDN_AUTHCID ) {
1884 if( bvmatch( mech, &ext_bv )) {
1885 /* EXTERNAL DNs are already normalized */
1886 assert( !BER_BVISNULL( id ) );
1890 ber_dupbv_x( dn, id, op->o_tmpmemctx );
1893 /* convert to u:<username> form */
1899 if( is_dn == SET_NONE ) {
1900 if( !strncasecmp( id->bv_val, "u:", STRLENOF( "u:" ) ) ) {
1902 dn->bv_val = id->bv_val + STRLENOF( "u:" );
1903 dn->bv_len = id->bv_len - STRLENOF( "u:" );
1905 } else if ( !strncasecmp( id->bv_val, "dn:", STRLENOF( "dn:" ) ) ) {
1907 dn->bv_val = id->bv_val + STRLENOF( "dn:" );
1908 dn->bv_len = id->bv_len - STRLENOF( "dn:" );
1912 /* No other possibilities from here */
1913 if( is_dn == SET_NONE ) {
1915 return( LDAP_INAPPROPRIATE_AUTH );
1918 /* Username strings */
1919 if( is_dn == SET_U ) {
1920 /* ITS#3419: values may need escape */
1922 LDAPAVA *RDNs[ 4 ][ 2 ];
1927 DN[ irdn ] = RDNs[ irdn ];
1928 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1929 AVAs[ irdn ].la_attr = slap_schema.si_ad_uid->ad_cname;
1930 AVAs[ irdn ].la_value = *dn;
1931 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1932 AVAs[ irdn ].la_private = NULL;
1933 RDNs[ irdn ][ 1 ] = NULL;
1935 if ( user_realm && *user_realm ) {
1937 DN[ irdn ] = RDNs[ irdn ];
1938 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1939 AVAs[ irdn ].la_attr = slap_schema.si_ad_cn->ad_cname;
1940 ber_str2bv( user_realm, 0, 0, &AVAs[ irdn ].la_value );
1941 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1942 AVAs[ irdn ].la_private = NULL;
1943 RDNs[ irdn ][ 1 ] = NULL;
1946 if ( !BER_BVISNULL( mech ) ) {
1948 DN[ irdn ] = RDNs[ irdn ];
1949 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1950 AVAs[ irdn ].la_attr = slap_schema.si_ad_cn->ad_cname;
1951 AVAs[ irdn ].la_value = *mech;
1952 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1953 AVAs[ irdn ].la_private = NULL;
1954 RDNs[ irdn ][ 1 ] = NULL;
1958 DN[ irdn ] = RDNs[ irdn ];
1959 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1960 AVAs[ irdn ].la_attr = slap_schema.si_ad_cn->ad_cname;
1961 BER_BVSTR( &AVAs[ irdn ].la_value, "auth" );
1962 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1963 AVAs[ irdn ].la_private = NULL;
1964 RDNs[ irdn ][ 1 ] = NULL;
1969 rc = ldap_dn2bv_x( DN, dn, LDAP_DN_FORMAT_LDAPV3,
1971 if ( rc != LDAP_SUCCESS ) {
1976 Debug( LDAP_DEBUG_TRACE,
1977 "slap_sasl_getdn: u:id converted to %s\n",
1982 /* Dup the DN in any case, so we don't risk
1983 * leaks or dangling pointers later,
1984 * and the DN value is '\0' terminated */
1985 ber_dupbv_x( &dn2, dn, op->o_tmpmemctx );
1986 dn->bv_val = dn2.bv_val;
1989 /* All strings are in DN form now. Normalize if needed. */
1991 rc = dnNormalize( 0, NULL, NULL, dn, &dn2, op->o_tmpmemctx );
1993 /* User DNs were constructed above and must be freed now */
1994 slap_sl_free( dn->bv_val, op->o_tmpmemctx );
1996 if ( rc != LDAP_SUCCESS ) {
2003 /* Run thru regexp */
2004 slap_sasl2dn( op, dn, &dn2, flags );
2005 if( !BER_BVISNULL( &dn2 ) ) {
2006 slap_sl_free( dn->bv_val, op->o_tmpmemctx );
2008 Debug( LDAP_DEBUG_TRACE,
2009 "slap_sasl_getdn: dn:id converted to %s\n",
2013 return( LDAP_SUCCESS );