2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2017 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 #if SASL_VERSION_MINOR >= 0x020119 /* 2.1.25 */
50 typedef sasl_callback_ft slap_sasl_cb_ft;
52 typedef int (*slap_sasl_cb_ft)();
55 static sasl_security_properties_t sasl_secprops;
56 #elif defined( SLAP_BUILTIN_SASL )
58 * built-in SASL implementation
59 * only supports EXTERNAL
61 typedef struct sasl_ctx {
62 slap_ssf_t sc_external_ssf;
63 struct berval sc_external_id;
70 static struct berval ext_bv = BER_BVC( "EXTERNAL" );
72 char *slap_sasl_auxprops;
74 #ifdef HAVE_CYRUS_SASL
76 /* Just use our internal auxprop by default */
80 const char *plugin_name,
85 if ( strcmp( option, "auxprop_plugin" )) {
88 if ( slap_sasl_auxprops )
89 *result = slap_sasl_auxprops;
101 Connection *conn = context;
105 if ( message == NULL ) {
106 return SASL_BADPARAM;
111 level = LDAP_DEBUG_NONE;
115 level = LDAP_DEBUG_ANY;
119 level = LDAP_DEBUG_ANY;
123 level = LDAP_DEBUG_TRACE;
127 level = LDAP_DEBUG_TRACE;
131 level = LDAP_DEBUG_TRACE;
135 level = LDAP_DEBUG_TRACE;
139 level = LDAP_DEBUG_TRACE;
140 label = "Password Trace";
143 return SASL_BADPARAM;
146 Debug( level, "SASL [conn=%ld] %s: %s\n",
147 conn ? (long) conn->c_connid: -1L,
154 static const char *slap_propnames[] = {
155 "*slapConn", "*slapAuthcDNlen", "*slapAuthcDN",
156 "*slapAuthzDNlen", "*slapAuthzDN", NULL };
158 #ifdef SLAP_AUXPROP_DONTUSECOPY
159 int slap_dontUseCopy_ignore;
160 BerVarray slap_dontUseCopy_propnames;
161 #endif /* SLAP_AUXPROP_DONTUSECOPY */
163 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
164 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
166 #define SLAP_SASL_PROP_CONN 0
167 #define SLAP_SASL_PROP_AUTHCLEN 1
168 #define SLAP_SASL_PROP_AUTHC 2
169 #define SLAP_SASL_PROP_AUTHZLEN 3
170 #define SLAP_SASL_PROP_AUTHZ 4
171 #define SLAP_SASL_PROP_COUNT 5 /* Number of properties we used */
173 typedef struct lookup_info {
175 const struct propval *list;
176 sasl_server_params_t *sparams;
179 static slap_response sasl_ap_lookup;
181 static struct berval sc_cleartext = BER_BVC("{CLEARTEXT}");
184 sasl_ap_lookup( Operation *op, SlapReply *rs )
187 AttributeDescription *ad;
191 lookup_info *sl = (lookup_info *)op->o_callback->sc_private;
193 /* return the actual error code,
194 * to allow caller to handle specific errors
196 if (rs->sr_type != REP_SEARCH) return rs->sr_err;
198 for( i = 0; sl->list[i].name; i++ ) {
199 const char *name = sl->list[i].name;
201 if ( name[0] == '*' ) {
202 if ( sl->flags & SASL_AUXPROP_AUTHZID ) continue;
203 /* Skip our private properties */
204 if ( !strcmp( name, slap_propnames[0] )) {
205 i += SLAP_SASL_PROP_COUNT - 1;
209 } else if ( !(sl->flags & SASL_AUXPROP_AUTHZID ) )
212 if ( sl->list[i].values ) {
213 if ( !(sl->flags & SASL_AUXPROP_OVERRIDE) ) continue;
216 rc = slap_str2ad( name, &ad, &text );
217 if ( rc != LDAP_SUCCESS ) {
218 Debug( LDAP_DEBUG_TRACE,
219 "slap_ap_lookup: str2ad(%s): %s\n", name, text, 0 );
223 /* If it's the rootdn and a rootpw was present, we already set
224 * it so don't override it here.
226 if ( ad == slap_schema.si_ad_userPassword && sl->list[i].values &&
227 be_isroot_dn( op->o_bd, &op->o_req_ndn ))
230 a = attr_find( rs->sr_entry->e_attrs, ad );
232 if ( ! access_allowed( op, rs->sr_entry, ad, NULL, ACL_AUTH, NULL ) ) {
235 if ( sl->list[i].values && ( sl->flags & SASL_AUXPROP_OVERRIDE ) ) {
236 sl->sparams->utils->prop_erase( sl->sparams->propctx,
239 for ( bv = a->a_vals; bv->bv_val; bv++ ) {
240 /* ITS#3846 don't give hashed passwords to SASL */
241 if ( ad == slap_schema.si_ad_userPassword &&
242 bv->bv_val[0] == '{' /*}*/ )
244 if ( lutil_passwd_scheme( bv->bv_val ) ) {
245 /* If it's not a recognized scheme, just assume it's
246 * a cleartext password that happened to include brackets.
248 * If it's a recognized scheme, skip this value, unless the
249 * scheme is {CLEARTEXT}. In that case, skip over the
250 * scheme name and use the remainder. If there is nothing
251 * past the scheme name, skip this value.
253 #ifdef SLAPD_CLEARTEXT
254 if ( !strncasecmp( bv->bv_val, sc_cleartext.bv_val,
255 sc_cleartext.bv_len )) {
257 cbv.bv_len = bv->bv_len - sc_cleartext.bv_len;
258 if ( cbv.bv_len > 0 ) {
259 cbv.bv_val = bv->bv_val + sc_cleartext.bv_len;
260 sl->sparams->utils->prop_set( sl->sparams->propctx,
261 sl->list[i].name, cbv.bv_val, cbv.bv_len );
268 sl->sparams->utils->prop_set( sl->sparams->propctx,
269 sl->list[i].name, bv->bv_val, bv->bv_len );
275 #if SASL_VERSION_FULL >= 0x020118
282 sasl_server_params_t *sparams,
287 OperationBuffer opbuf = {{ NULL }};
288 Operation *op = (Operation *)&opbuf;
290 Connection *conn = NULL;
292 int rc = LDAP_SUCCESS;
293 #ifdef SLAP_AUXPROP_DONTUSECOPY
295 BackendDB *dontUseCopy_bd = NULL;
296 #endif /* SLAP_AUXPROP_DONTUSECOPY */
298 sl.list = sparams->utils->prop_get( sparams->propctx );
299 sl.sparams = sparams;
302 /* Find our DN and conn first */
303 for( i = 0; sl.list[i].name; i++ ) {
304 if ( sl.list[i].name[0] == '*' ) {
305 if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_CONN] ) ) {
306 if ( sl.list[i].values && sl.list[i].values[0] )
307 AC_MEMCPY( &conn, sl.list[i].values[0], sizeof( conn ) );
310 if ( flags & SASL_AUXPROP_AUTHZID ) {
311 if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHZLEN] )) {
312 if ( sl.list[i].values && sl.list[i].values[0] )
313 AC_MEMCPY( &op->o_req_ndn.bv_len, sl.list[i].values[0],
314 sizeof( op->o_req_ndn.bv_len ) );
315 } else if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHZ] )) {
316 if ( sl.list[i].values )
317 op->o_req_ndn.bv_val = (char *)sl.list[i].values[0];
322 if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHCLEN] )) {
323 if ( sl.list[i].values && sl.list[i].values[0] )
324 AC_MEMCPY( &op->o_req_ndn.bv_len, sl.list[i].values[0],
325 sizeof( op->o_req_ndn.bv_len ) );
326 } else if ( !strcmp( sl.list[i].name, slap_propnames[SLAP_SASL_PROP_AUTHC] ) ) {
327 if ( sl.list[i].values ) {
328 op->o_req_ndn.bv_val = (char *)sl.list[i].values[0];
329 if ( !(flags & SASL_AUXPROP_AUTHZID) )
333 #ifdef SLAP_AUXPROP_DONTUSECOPY
334 if ( slap_dontUseCopy_propnames != NULL ) {
337 ber_str2bv( &sl.list[i].name[1], 0, 1, &bv );
338 for ( j = 0; !BER_BVISNULL( &slap_dontUseCopy_propnames[ j ]); j++ ) {
339 if ( bvmatch( &bv, &slap_dontUseCopy_propnames[ j ] ) ) {
345 #endif /* SLAP_AUXPROP_DONTUSECOPY */
349 /* we don't know anything about this, ignore it */
355 /* Now see what else needs to be fetched */
356 for( i = 0; sl.list[i].name; i++ ) {
357 const char *name = sl.list[i].name;
359 if ( name[0] == '*' ) {
360 if ( flags & SASL_AUXPROP_AUTHZID ) continue;
361 /* Skip our private properties */
362 if ( !strcmp( name, slap_propnames[0] )) {
363 i += SLAP_SASL_PROP_COUNT - 1;
367 } else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
370 if ( sl.list[i].values ) {
371 if ( !(flags & SASL_AUXPROP_OVERRIDE) ) continue;
378 slap_callback cb = { NULL, sasl_ap_lookup, NULL, NULL };
382 op->o_bd = select_backend( &op->o_req_ndn, 1 );
385 /* For rootdn, see if we can use the rootpw */
386 if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) &&
387 !BER_BVISEMPTY( &op->o_bd->be_rootpw )) {
388 struct berval cbv = BER_BVNULL;
390 /* If there's a recognized scheme, see if it's CLEARTEXT */
391 if ( lutil_passwd_scheme( op->o_bd->be_rootpw.bv_val )) {
392 if ( !strncasecmp( op->o_bd->be_rootpw.bv_val,
393 sc_cleartext.bv_val, sc_cleartext.bv_len )) {
395 /* If it's CLEARTEXT, skip past scheme spec */
396 cbv.bv_len = op->o_bd->be_rootpw.bv_len -
399 cbv.bv_val = op->o_bd->be_rootpw.bv_val +
403 /* No scheme, use the whole value */
405 cbv = op->o_bd->be_rootpw;
407 if ( !BER_BVISEMPTY( &cbv )) {
408 for( i = 0; sl.list[i].name; i++ ) {
409 const char *name = sl.list[i].name;
411 if ( name[0] == '*' ) {
412 if ( flags & SASL_AUXPROP_AUTHZID ) continue;
414 } else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
417 if ( !strcasecmp(name,"userPassword") ) {
418 sl.sparams->utils->prop_set( sl.sparams->propctx,
419 sl.list[i].name, cbv.bv_val, cbv.bv_len );
426 #ifdef SLAP_AUXPROP_DONTUSECOPY
427 if ( SLAP_SHADOW( op->o_bd ) && dontUseCopy ) {
428 dontUseCopy_bd = op->o_bd;
429 op->o_bd = frontendDB;
433 #endif /* SLAP_AUXPROP_DONTUSECOPY */
435 if ( op->o_bd->be_search ) {
436 SlapReply rs = {REP_RESULT};
437 #ifdef SLAP_AUXPROP_DONTUSECOPY
438 LDAPControl **save_ctrls = NULL, c;
439 int save_dontUseCopy;
440 #endif /* SLAP_AUXPROP_DONTUSECOPY */
442 op->o_hdr = conn->c_sasl_bindop->o_hdr;
443 op->o_controls = opbuf.ob_controls;
444 op->o_tag = LDAP_REQ_SEARCH;
445 op->o_dn = conn->c_ndn;
446 op->o_ndn = conn->c_ndn;
447 op->o_callback = &cb;
448 slap_op_time( &op->o_time, &op->o_tincr );
449 op->o_do_not_cache = 1;
450 op->o_is_auth_check = 1;
451 op->o_req_dn = op->o_req_ndn;
452 op->ors_scope = LDAP_SCOPE_BASE;
453 op->ors_deref = LDAP_DEREF_NEVER;
454 op->ors_tlimit = SLAP_NO_LIMIT;
456 op->ors_filter = &generic_filter;
457 op->ors_filterstr = generic_filterstr;
458 op->o_authz = conn->c_authz;
459 /* FIXME: we want all attributes, right? */
460 op->ors_attrs = NULL;
462 #ifdef SLAP_AUXPROP_DONTUSECOPY
464 save_dontUseCopy = op->o_dontUseCopy;
465 if ( !op->o_dontUseCopy ) {
467 save_ctrls = op->o_ctrls;
469 for ( ; op->o_ctrls[ cnt ]; cnt++ )
472 op->o_ctrls = op->o_tmpcalloc( sizeof(LDAPControl *), cnt + 2, op->o_tmpmemctx );
474 for ( cnt = 0; save_ctrls[ cnt ]; cnt++ ) {
475 op->o_ctrls[ cnt ] = save_ctrls[ cnt ];
478 c.ldctl_oid = LDAP_CONTROL_DONTUSECOPY;
479 c.ldctl_iscritical = 1;
480 BER_BVZERO( &c.ldctl_value );
481 op->o_ctrls[ cnt ] = &c;
483 op->o_dontUseCopy = SLAP_CONTROL_CRITICAL;
485 #endif /* SLAP_AUXPROP_DONTUSECOPY */
487 rc = op->o_bd->be_search( op, &rs );
489 #ifdef SLAP_AUXPROP_DONTUSECOPY
491 if ( save_ctrls != op->o_ctrls ) {
492 op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
493 op->o_ctrls = save_ctrls;
494 op->o_dontUseCopy = save_dontUseCopy;
497 if ( rs.sr_err == LDAP_UNAVAILABLE && slap_dontUseCopy_ignore )
499 op->o_bd = dontUseCopy_bd;
501 goto retry_dontUseCopy;
504 #endif /* SLAP_AUXPROP_DONTUSECOPY */
509 #if SASL_VERSION_FULL >= 0x020118
510 return rc != LDAP_SUCCESS ? SASL_FAIL : SASL_OK;
514 #if SASL_VERSION_FULL >= 0x020110
518 sasl_server_params_t *sparams,
519 struct propctx *prctx,
527 Connection *conn = NULL;
528 const struct propval *pr;
529 Modifications *modlist = NULL, **modtail = &modlist, *mod;
530 slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
531 char textbuf[SLAP_TEXT_BUFLEN];
533 size_t textlen = sizeof(textbuf);
534 #ifdef SLAP_AUXPROP_DONTUSECOPY
536 BackendDB *dontUseCopy_bd = NULL;
537 #endif /* SLAP_AUXPROP_DONTUSECOPY */
539 /* just checking if we are enabled */
540 if (!prctx) return SASL_OK;
542 if (!sparams || !user) return SASL_BADPARAM;
544 pr = sparams->utils->prop_get( sparams->propctx );
546 /* Find our DN and conn first */
547 for( i = 0; pr[i].name; i++ ) {
548 if ( pr[i].name[0] == '*' ) {
549 if ( !strcmp( pr[i].name, slap_propnames[SLAP_SASL_PROP_CONN] ) ) {
550 if ( pr[i].values && pr[i].values[0] )
551 AC_MEMCPY( &conn, pr[i].values[0], sizeof( conn ) );
554 if ( !strcmp( pr[i].name, slap_propnames[SLAP_SASL_PROP_AUTHCLEN] )) {
555 if ( pr[i].values && pr[i].values[0] )
556 AC_MEMCPY( &op.o_req_ndn.bv_len, pr[i].values[0],
557 sizeof( op.o_req_ndn.bv_len ) );
558 } else if ( !strcmp( pr[i].name, slap_propnames[SLAP_SASL_PROP_AUTHC] ) ) {
560 op.o_req_ndn.bv_val = (char *)pr[i].values[0];
562 #ifdef SLAP_AUXPROP_DONTUSECOPY
563 if ( slap_dontUseCopy_propnames != NULL ) {
565 ber_str2bv( &pr[i].name[1], 0, 1, &bv );
566 for ( j = 0; !BER_BVISNULL( &slap_dontUseCopy_propnames[ j ] ); j++ ) {
567 if ( bvmatch( &bv, &slap_dontUseCopy_propnames[ j ] ) ) {
573 #endif /* SLAP_AUXPROP_DONTUSECOPY */
576 if (!conn || !op.o_req_ndn.bv_val) return SASL_BADPARAM;
578 op.o_bd = select_backend( &op.o_req_ndn, 1 );
580 if ( !op.o_bd || !op.o_bd->be_modify ) return SASL_FAIL;
582 #ifdef SLAP_AUXPROP_DONTUSECOPY
583 if ( SLAP_SHADOW( op.o_bd ) && dontUseCopy ) {
584 dontUseCopy_bd = op.o_bd;
585 op.o_bd = frontendDB;
586 op.o_dontUseCopy = SLAP_CONTROL_CRITICAL;
588 #endif /* SLAP_AUXPROP_DONTUSECOPY */
590 pr = sparams->utils->prop_get( prctx );
591 if (!pr) return SASL_BADPARAM;
593 for (i=0; pr[i].name; i++);
594 if (!i) return SASL_BADPARAM;
596 for (i=0; pr[i].name; i++) {
597 mod = (Modifications *)ch_malloc( sizeof(Modifications) );
598 mod->sml_op = LDAP_MOD_REPLACE;
600 ber_str2bv( pr[i].name, 0, 0, &mod->sml_type );
601 mod->sml_numvals = pr[i].nvalues;
602 mod->sml_values = (struct berval *)ch_malloc( (pr[i].nvalues + 1) *
603 sizeof(struct berval));
604 for (j=0; j<pr[i].nvalues; j++) {
605 ber_str2bv( pr[i].values[j], 0, 1, &mod->sml_values[j]);
607 BER_BVZERO( &mod->sml_values[j] );
608 mod->sml_nvalues = NULL;
609 mod->sml_desc = NULL;
611 modtail = &mod->sml_next;
615 rc = slap_mods_check( &op, modlist, &text, textbuf, textlen, NULL );
617 if ( rc == LDAP_SUCCESS ) {
618 rc = slap_mods_no_user_mod_check( &op, modlist,
619 &text, textbuf, textlen );
621 if ( rc == LDAP_SUCCESS ) {
622 if ( conn->c_sasl_bindop ) {
623 op.o_hdr = conn->c_sasl_bindop->o_hdr;
626 memset( &oph, 0, sizeof(oph) );
627 operation_fake_init( conn, &op, ldap_pvt_thread_pool_context(), 0 );
629 op.o_tag = LDAP_REQ_MODIFY;
630 op.o_ndn = op.o_req_ndn;
632 slap_op_time( &op.o_time, &op.o_tincr );
633 op.o_do_not_cache = 1;
634 op.o_is_auth_check = 1;
635 op.o_req_dn = op.o_req_ndn;
636 op.orm_modlist = modlist;
639 SlapReply rs = {REP_RESULT};
640 rc = op.o_bd->be_modify( &op, &rs );
642 #ifdef SLAP_AUXPROP_DONTUSECOPY
644 rs.sr_err == LDAP_UNAVAILABLE &&
645 slap_dontUseCopy_ignore )
647 op.o_bd = dontUseCopy_bd;
648 op.o_dontUseCopy = SLAP_CONTROL_NONE;
652 #endif /* SLAP_AUXPROP_DONTUSECOPY */
657 slap_mods_free( modlist, 1 );
658 return rc != LDAP_SUCCESS ? SASL_FAIL : SASL_OK;
660 #endif /* SASL_VERSION_FULL >= 2.1.16 */
662 static sasl_auxprop_plug_t slap_auxprop_plugin = {
665 NULL, /* glob_context */
666 NULL, /* auxprop_free */
669 #if SASL_VERSION_FULL >= 0x020110
670 slap_auxprop_store /* the declaration of this member changed
671 * in cyrus SASL from 2.1.15 to 2.1.16 */
679 const sasl_utils_t *utils,
682 sasl_auxprop_plug_t **plug,
683 const char *plugname)
685 if ( !out_version || !plug ) return SASL_BADPARAM;
687 if ( max_version < SASL_AUXPROP_PLUG_VERSION ) return SASL_BADVERS;
689 *out_version = SASL_AUXPROP_PLUG_VERSION;
690 *plug = &slap_auxprop_plugin;
694 /* Convert a SASL authcid or authzid into a DN. Store the DN in an
695 * auxiliary property, so that we can refer to it in sasl_authorize
696 * without interfering with anything else. Also, the SASL username
697 * buffer is constrained to 256 characters, and our DNs could be
698 * much longer (SLAP_LDAPDN_MAXLEN, currently set to 8192)
701 slap_sasl_canonicalize(
707 const char *user_realm,
712 Connection *conn = (Connection *)context;
713 struct propctx *props = sasl_auxprop_getctx( sconn );
714 struct propval auxvals[ SLAP_SASL_PROP_COUNT ] = { { 0 } };
717 const char *names[2];
722 Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
723 conn ? (long) conn->c_connid : -1L,
724 (flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
725 in ? in : "<empty>");
727 /* If name is too big, just truncate. We don't care, we're
728 * using DNs, not the usernames.
730 if ( inlen > out_max )
733 /* This is a Simple Bind using SPASSWD. That means the in-directory
734 * userPassword of the Binding user already points at SASL, so it
735 * cannot be used to actually satisfy a password comparison. Just
736 * ignore it, some other mech will process it.
738 if ( !conn->c_sasl_bindop ||
739 conn->c_sasl_bindop->orb_method != LDAP_AUTH_SASL ) goto done;
741 /* See if we need to add request, can only do it once */
742 prop_getnames( props, slap_propnames, auxvals );
743 if ( !auxvals[0].name )
744 prop_request( props, slap_propnames );
746 if ( flags & SASL_CU_AUTHID )
747 which = SLAP_SASL_PROP_AUTHCLEN;
749 which = SLAP_SASL_PROP_AUTHZLEN;
751 /* Need to store the Connection for auxprop_lookup */
752 if ( !auxvals[SLAP_SASL_PROP_CONN].values ) {
753 names[0] = slap_propnames[SLAP_SASL_PROP_CONN];
755 prop_set( props, names[0], (char *)&conn, sizeof( conn ) );
758 /* Already been here? */
759 if ( auxvals[which].values )
762 /* Normally we require an authzID to have a u: or dn: prefix.
763 * However, SASL frequently gives us an authzID that is just
764 * an exact copy of the authcID, without a prefix. We need to
765 * detect and allow this condition. If SASL calls canonicalize
766 * with SASL_CU_AUTHID|SASL_CU_AUTHZID this is a no-brainer.
767 * But if it's broken into two calls, we need to remember the
768 * authcID so that we can compare the authzID later. We store
769 * the authcID temporarily in conn->c_sasl_dn. We necessarily
770 * finish Canonicalizing before Authorizing, so there is no
771 * conflict with slap_sasl_authorize's use of this temp var.
773 * The SASL EXTERNAL mech is backwards from all the other mechs,
774 * it does authzID before the authcID. If we see that authzID
775 * has already been done, don't do anything special with authcID.
777 if ( flags == SASL_CU_AUTHID && !auxvals[SLAP_SASL_PROP_AUTHZ].values ) {
778 conn->c_sasl_dn.bv_val = (char *) in;
779 conn->c_sasl_dn.bv_len = 0;
780 } else if ( flags == SASL_CU_AUTHZID && conn->c_sasl_dn.bv_val ) {
781 rc = strcmp( in, conn->c_sasl_dn.bv_val );
782 conn->c_sasl_dn.bv_val = NULL;
783 /* They were equal, no work needed */
784 if ( !rc ) goto done;
787 bvin.bv_val = (char *)in;
789 rc = slap_sasl_getdn( conn, NULL, &bvin, (char *)user_realm, &dn,
790 (flags & SASL_CU_AUTHID) ? SLAP_GETDN_AUTHCID : SLAP_GETDN_AUTHZID );
791 if ( rc != LDAP_SUCCESS ) {
792 sasl_seterror( sconn, 0, ldap_err2string( rc ) );
796 names[0] = slap_propnames[which];
798 prop_set( props, names[0], (char *)&dn.bv_len, sizeof( dn.bv_len ) );
801 names[0] = slap_propnames[which];
802 prop_set( props, names[0], dn.bv_val, dn.bv_len );
804 Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
805 conn ? (long) conn->c_connid : -1L, names[0]+1,
806 dn.bv_val ? dn.bv_val : "<EMPTY>" );
808 /* Not needed any more, SASL has copied it */
809 if ( conn && conn->c_sasl_bindop )
810 conn->c_sasl_bindop->o_tmpfree( dn.bv_val, conn->c_sasl_bindop->o_tmpmemctx );
813 AC_MEMCPY( out, in, inlen );
825 char *requested_user,
829 const char *def_realm,
831 struct propctx *props)
833 Connection *conn = (Connection *)context;
835 * (SLAP_SASL_PROP_COUNT - 1) because we skip "conn",
836 * + 1 for NULL termination?
838 struct propval auxvals[ SLAP_SASL_PROP_COUNT ] = { { 0 } };
839 struct berval authcDN, authzDN = BER_BVNULL;
842 /* Simple Binds don't support proxy authorization, ignore it */
843 if ( !conn->c_sasl_bindop ||
844 conn->c_sasl_bindop->orb_method != LDAP_AUTH_SASL ) return SASL_OK;
846 Debug( LDAP_DEBUG_ARGS, "SASL proxy authorize [conn=%ld]: "
847 "authcid=\"%s\" authzid=\"%s\"\n",
848 conn ? (long) conn->c_connid : -1L, auth_identity, requested_user );
849 if ( conn->c_sasl_dn.bv_val ) {
850 BER_BVZERO( &conn->c_sasl_dn );
853 /* Skip SLAP_SASL_PROP_CONN */
854 prop_getnames( props, slap_propnames+1, auxvals );
856 /* Should not happen */
857 if ( !auxvals[0].values ) {
858 sasl_seterror( sconn, 0, "invalid authcid" );
862 AC_MEMCPY( &authcDN.bv_len, auxvals[0].values[0], sizeof(authcDN.bv_len) );
863 authcDN.bv_val = auxvals[1].values ? (char *)auxvals[1].values[0] : NULL;
864 conn->c_sasl_dn = authcDN;
866 /* Nothing to do if no authzID was given */
867 if ( !auxvals[2].name || !auxvals[2].values ) {
871 AC_MEMCPY( &authzDN.bv_len, auxvals[2].values[0], sizeof(authzDN.bv_len) );
872 authzDN.bv_val = auxvals[3].values ? (char *)auxvals[3].values[0] : NULL;
874 rc = slap_sasl_authorized( conn->c_sasl_bindop, &authcDN, &authzDN );
875 if ( rc != LDAP_SUCCESS ) {
876 Debug( LDAP_DEBUG_TRACE, "SASL Proxy Authorize [conn=%ld]: "
877 "proxy authorization disallowed (%d)\n",
878 conn ? (long) conn->c_connid : -1L, rc, 0 );
880 sasl_seterror( sconn, 0, "not authorized" );
884 /* FIXME: we need yet another dup because slap_sasl_getdn()
885 * is using the bind operation slab */
886 ber_dupbv( &conn->c_sasl_authz_dn, &authzDN );
889 if (conn->c_sasl_bindop) {
890 Statslog( LDAP_DEBUG_STATS,
891 "%s BIND authcid=\"%s\" authzid=\"%s\"\n",
892 conn->c_sasl_bindop->o_log_prefix,
893 auth_identity, requested_user, 0, 0 );
896 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
897 " proxy authorization allowed authzDN=\"%s\"\n",
898 conn ? (long) conn->c_connid : -1L,
899 authzDN.bv_val ? authzDN.bv_val : "", 0 );
904 slap_sasl_err2ldap( int saslerr )
908 /* map SASL errors to LDAP resultCode returned by:
910 * SASL_OK, SASL_NOMEM
912 * SASL_OK, SASL_CONTINUE, SASL_TRANS, SASL_BADPARAM, SASL_BADPROT,
914 * sasl_server_start()
917 * SASL_OK, SASL_BADPARAM
925 rc = LDAP_SASL_BIND_IN_PROGRESS;
932 rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
938 rc = LDAP_INVALID_CREDENTIALS;
941 rc = LDAP_INSUFFICIENT_ACCESS;
945 rc = LDAP_INAPPROPRIATE_AUTH;
949 rc = LDAP_UNAVAILABLE;
952 rc = LDAP_UNWILLING_TO_PERFORM;
964 static struct berval sasl_pwscheme = BER_BVC("{SASL}");
967 const struct berval *sc,
968 const struct berval * passwd,
969 const struct berval * cred,
974 void *ctx, *sconn = NULL;
976 for( i=0; i<cred->bv_len; i++) {
977 if(cred->bv_val[i] == '\0') {
978 return LUTIL_PASSWD_ERR; /* NUL character in password */
982 if( cred->bv_val[i] != '\0' ) {
983 return LUTIL_PASSWD_ERR; /* cred must behave like a string */
986 for( i=0; i<passwd->bv_len; i++) {
987 if(passwd->bv_val[i] == '\0') {
988 return LUTIL_PASSWD_ERR; /* NUL character in password */
992 if( passwd->bv_val[i] != '\0' ) {
993 return LUTIL_PASSWD_ERR; /* passwd must behave like a string */
996 rtn = LUTIL_PASSWD_ERR;
998 ctx = ldap_pvt_thread_pool_context();
999 ldap_pvt_thread_pool_getkey( ctx, (void *)slap_sasl_bind, &sconn, NULL );
1001 if( sconn != NULL ) {
1003 sc = sasl_checkpass( sconn,
1004 passwd->bv_val, passwd->bv_len,
1005 cred->bv_val, cred->bv_len );
1006 rtn = ( sc != SASL_OK ) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
1011 #endif /* SLAPD_SPASSWD */
1013 #endif /* HAVE_CYRUS_SASL */
1015 #ifdef ENABLE_REWRITE
1017 typedef struct slapd_map_data {
1019 struct berval filter;
1020 AttributeName attrs[2];
1025 slapd_rw_config( const char *fname, int lineno, int argc, char **argv )
1027 slapd_map_data *ret = NULL;
1028 LDAPURLDesc *lud = NULL;
1030 AttributeDescription *ad = NULL;
1032 struct berval dn, ndn;
1035 Debug( LDAP_DEBUG_ANY,
1036 "[%s:%d] slapd map needs URI\n",
1042 if ( strncasecmp( uri, "uri=", STRLENOF( "uri=" ) ) == 0 ) {
1043 uri += STRLENOF( "uri=" );
1046 if ( ldap_url_parse( uri, &lud ) != LDAP_URL_SUCCESS ) {
1047 Debug( LDAP_DEBUG_ANY,
1048 "[%s:%d] illegal URI '%s'\n",
1049 fname, lineno, uri );
1053 if ( strcasecmp( lud->lud_scheme, "ldap" )) {
1054 Debug( LDAP_DEBUG_ANY,
1055 "[%s:%d] illegal URI scheme '%s'\n",
1056 fname, lineno, lud->lud_scheme );
1060 if (( lud->lud_host && lud->lud_host[0] ) || lud->lud_exts
1062 Debug( LDAP_DEBUG_ANY,
1063 "[%s:%d] illegal URI '%s'\n",
1064 fname, lineno, uri );
1068 if ( lud->lud_attrs ) {
1069 if ( lud->lud_attrs[1] ) {
1070 Debug( LDAP_DEBUG_ANY,
1071 "[%s:%d] only one attribute allowed in URI\n",
1075 if ( strcasecmp( lud->lud_attrs[0], "dn" ) &&
1076 strcasecmp( lud->lud_attrs[0], "entryDN" )) {
1078 rc = slap_str2ad( lud->lud_attrs[0], &ad, &text );
1083 ber_str2bv( lud->lud_dn, 0, 0, &dn );
1084 if ( dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL ))
1087 if ( lud->lud_filter ) {
1088 flen = strlen( lud->lud_filter ) + 1;
1090 ret = ch_malloc( sizeof( slapd_map_data ) + flen );
1093 ret->filter.bv_val = (char *)(ret+1);
1094 ret->filter.bv_len = flen - 1;
1095 strcpy( ret->filter.bv_val, lud->lud_filter );
1097 BER_BVZERO( &ret->filter );
1099 ret->scope = lud->lud_scope;
1101 ret->attrs[0].an_name = ad->ad_cname;
1103 BER_BVZERO( &ret->attrs[0].an_name );
1105 ret->attrs[0].an_desc = ad;
1106 BER_BVZERO( &ret->attrs[1].an_name );
1108 ldap_free_urldesc( lud );
1112 struct slapd_rw_info {
1113 slapd_map_data *si_data;
1114 struct berval si_val;
1118 slapd_rw_cb( Operation *op, SlapReply *rs )
1120 if ( rs->sr_type == REP_SEARCH ) {
1121 struct slapd_rw_info *si = op->o_callback->sc_private;
1123 if ( si->si_data->attrs[0].an_desc ) {
1126 a = attr_find( rs->sr_entry->e_attrs,
1127 si->si_data->attrs[0].an_desc );
1129 ber_dupbv( &si->si_val, a->a_vals );
1132 ber_dupbv( &si->si_val, &rs->sr_entry->e_name );
1135 return LDAP_SUCCESS;
1139 slapd_rw_apply( void *private, const char *filter, struct berval *val )
1141 slapd_map_data *sl = private;
1142 slap_callback cb = { NULL };
1143 Connection conn = {0};
1144 OperationBuffer opbuf;
1147 SlapReply rs = {REP_RESULT};
1148 struct slapd_rw_info si;
1152 thrctx = ldap_pvt_thread_pool_context();
1153 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
1156 op->o_tag = LDAP_REQ_SEARCH;
1157 op->o_req_dn = op->o_req_ndn = sl->base;
1158 op->o_bd = select_backend( &op->o_req_ndn, 1 );
1163 BER_BVZERO( &si.si_val );
1164 op->ors_scope = sl->scope;
1165 op->ors_deref = LDAP_DEREF_NEVER;
1167 op->ors_tlimit = SLAP_NO_LIMIT;
1168 if ( sl->attrs[0].an_desc ) {
1169 op->ors_attrs = sl->attrs;
1171 op->ors_attrs = slap_anlist_no_attrs;
1174 rc = strlen( filter );
1178 rc += sl->filter.bv_len;
1179 ptr = op->ors_filterstr.bv_val = op->o_tmpalloc( rc + 1, op->o_tmpmemctx );
1180 if ( sl->filter.bv_len ) {
1181 ptr = lutil_strcopy( ptr, sl->filter.bv_val );
1186 strcpy( ptr, filter );
1188 op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1189 if ( !op->ors_filter ) {
1190 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1194 op->ors_attrsonly = 0;
1195 op->o_dn = op->o_bd->be_rootdn;
1196 op->o_ndn = op->o_bd->be_rootndn;
1197 op->o_do_not_cache = 1;
1199 cb.sc_response = slapd_rw_cb;
1200 cb.sc_private = &si;
1201 op->o_callback = &cb;
1203 rc = op->o_bd->be_search( op, &rs );
1204 if ( rc == LDAP_SUCCESS && !BER_BVISNULL( &si.si_val )) {
1206 rc = REWRITE_SUCCESS;
1208 if ( !BER_BVISNULL( &si.si_val )) {
1209 ch_free( si.si_val.bv_val );
1213 filter_free_x( op, op->ors_filter, 1 );
1214 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1219 slapd_rw_destroy( void *private )
1221 slapd_map_data *md = private;
1223 assert( private != NULL );
1225 ch_free( md->base.bv_val );
1231 static const rewrite_mapper slapd_mapper = {
1239 int slap_sasl_init( void )
1241 #ifdef HAVE_CYRUS_SASL
1243 static sasl_callback_t server_callbacks[] = {
1244 { SASL_CB_LOG, (slap_sasl_cb_ft)&slap_sasl_log, NULL },
1245 { SASL_CB_GETOPT, (slap_sasl_cb_ft)&slap_sasl_getopt, NULL },
1246 { SASL_CB_LIST_END, NULL, NULL }
1250 #ifdef ENABLE_REWRITE
1251 rewrite_mapper_register( &slapd_mapper );
1254 #ifdef HAVE_CYRUS_SASL
1255 #ifdef HAVE_SASL_VERSION
1256 /* stringify the version number, sasl.h doesn't do it for us */
1257 #define VSTR0(maj, min, pat) #maj "." #min "." #pat
1258 #define VSTR(maj, min, pat) VSTR0(maj, min, pat)
1259 #define SASL_VERSION_STRING VSTR(SASL_VERSION_MAJOR, SASL_VERSION_MINOR, \
1262 sasl_version( NULL, &rc );
1263 if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
1264 (rc & 0xffff) < SASL_VERSION_STEP)
1266 char version[sizeof("xxx.xxx.xxxxx")];
1267 sprintf( version, "%u.%d.%d", (unsigned)rc >> 24, (rc >> 16) & 0xff,
1269 Debug( LDAP_DEBUG_ANY, "slap_sasl_init: SASL library version mismatch:"
1270 " expected %s, got %s\n",
1271 SASL_VERSION_STRING, version, 0 );
1277 ldap_pvt_sasl_mutex_new,
1278 ldap_pvt_sasl_mutex_lock,
1279 ldap_pvt_sasl_mutex_unlock,
1280 ldap_pvt_sasl_mutex_dispose );
1282 generic_filter.f_desc = slap_schema.si_ad_objectClass;
1284 rc = sasl_auxprop_add_plugin( "slapd", slap_auxprop_init );
1285 if( rc != SASL_OK ) {
1286 Debug( LDAP_DEBUG_ANY, "slap_sasl_init: auxprop add plugin failed\n",
1291 /* should provide callbacks for logging */
1292 /* server name should be configurable */
1293 rc = sasl_server_init( server_callbacks, "slapd" );
1295 if( rc != SASL_OK ) {
1296 Debug( LDAP_DEBUG_ANY, "slap_sasl_init: server init failed\n",
1302 #ifdef SLAPD_SPASSWD
1303 lutil_passwd_add( &sasl_pwscheme, chk_sasl, NULL );
1306 Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
1309 /* default security properties */
1310 memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
1311 sasl_secprops.max_ssf = INT_MAX;
1312 sasl_secprops.maxbufsize = 65536;
1313 sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
1319 int slap_sasl_destroy( void )
1321 #ifdef HAVE_CYRUS_SASL
1324 #ifdef SLAP_AUXPROP_DONTUSECOPY
1325 if ( slap_dontUseCopy_propnames ) {
1326 ber_bvarray_free( slap_dontUseCopy_propnames );
1327 slap_dontUseCopy_propnames = NULL;
1329 #endif /* SLAP_AUXPROP_DONTUSECOPY */
1338 slap_sasl_peer2ipport( struct berval *peer )
1342 *addr = &peer->bv_val[ STRLENOF( "IP=" ) ];
1343 ber_len_t plen = peer->bv_len - STRLENOF( "IP=" );
1346 if ( addr[0] == '[' ) {
1350 ipport = ch_strdup( &addr[isv6] );
1352 /* Convert IPv6/IPv4 addresses to address;port syntax. */
1353 p = strrchr( ipport, ':' );
1357 assert( p[-1] == ']' );
1358 AC_MEMCPY( &p[-1], p, plen - ( p - ipport ) + 1 );
1361 } else if ( isv6 ) {
1364 assert( addr[plen] == ']' );
1371 int slap_sasl_open( Connection *conn, int reopen )
1373 int sc = LDAP_SUCCESS;
1374 #ifdef HAVE_CYRUS_SASL
1377 sasl_conn_t *ctx = NULL;
1378 sasl_callback_t *session_callbacks;
1379 char *ipremoteport = NULL, *iplocalport = NULL;
1381 assert( conn->c_sasl_authctx == NULL );
1384 assert( conn->c_sasl_extra == NULL );
1387 SLAP_CALLOC( 5, sizeof(sasl_callback_t));
1388 if( session_callbacks == NULL ) {
1389 Debug( LDAP_DEBUG_ANY,
1390 "slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
1393 conn->c_sasl_extra = session_callbacks;
1395 session_callbacks[cb=0].id = SASL_CB_LOG;
1396 session_callbacks[cb].proc = (slap_sasl_cb_ft)&slap_sasl_log;
1397 session_callbacks[cb++].context = conn;
1399 session_callbacks[cb].id = SASL_CB_PROXY_POLICY;
1400 session_callbacks[cb].proc = (slap_sasl_cb_ft)&slap_sasl_authorize;
1401 session_callbacks[cb++].context = conn;
1403 session_callbacks[cb].id = SASL_CB_CANON_USER;
1404 session_callbacks[cb].proc = (slap_sasl_cb_ft)&slap_sasl_canonicalize;
1405 session_callbacks[cb++].context = conn;
1407 session_callbacks[cb].id = SASL_CB_LIST_END;
1408 session_callbacks[cb].proc = NULL;
1409 session_callbacks[cb++].context = NULL;
1411 session_callbacks = conn->c_sasl_extra;
1414 conn->c_sasl_layers = 0;
1416 /* create new SASL context */
1417 if ( conn->c_sock_name.bv_len != 0 &&
1418 strncmp( conn->c_sock_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
1420 iplocalport = slap_sasl_peer2ipport( &conn->c_sock_name );
1423 if ( conn->c_peer_name.bv_len != 0 &&
1424 strncmp( conn->c_peer_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
1426 ipremoteport = slap_sasl_peer2ipport( &conn->c_peer_name );
1429 sc = sasl_server_new( "ldap", sasl_host, global_realm,
1430 iplocalport, ipremoteport, session_callbacks, SASL_SUCCESS_DATA, &ctx );
1431 if ( iplocalport != NULL ) {
1432 ch_free( iplocalport );
1434 if ( ipremoteport != NULL ) {
1435 ch_free( ipremoteport );
1438 if( sc != SASL_OK ) {
1439 Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
1445 conn->c_sasl_authctx = ctx;
1447 if( sc == SASL_OK ) {
1448 sc = sasl_setprop( ctx,
1449 SASL_SEC_PROPS, &sasl_secprops );
1451 if( sc != SASL_OK ) {
1452 Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
1455 slap_sasl_close( conn );
1460 sc = slap_sasl_err2ldap( sc );
1462 #elif defined(SLAP_BUILTIN_SASL)
1463 /* built-in SASL implementation */
1464 SASL_CTX *ctx = (SASL_CTX *) SLAP_MALLOC(sizeof(SASL_CTX));
1465 if( ctx == NULL ) return -1;
1467 ctx->sc_external_ssf = 0;
1468 BER_BVZERO( &ctx->sc_external_id );
1470 conn->c_sasl_authctx = ctx;
1476 int slap_sasl_external(
1479 struct berval *auth_id )
1481 #ifdef HAVE_CYRUS_SASL
1483 sasl_conn_t *ctx = conn->c_sasl_authctx;
1484 sasl_ssf_t sasl_ssf = ssf;
1486 if ( ctx == NULL ) {
1487 return LDAP_UNAVAILABLE;
1490 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &sasl_ssf );
1492 if ( sc != SASL_OK ) {
1496 sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL,
1497 auth_id ? auth_id->bv_val : NULL );
1499 if ( sc != SASL_OK ) {
1502 #elif defined(SLAP_BUILTIN_SASL)
1503 /* built-in SASL implementation */
1504 SASL_CTX *ctx = conn->c_sasl_authctx;
1505 if ( ctx == NULL ) return LDAP_UNAVAILABLE;
1507 ctx->sc_external_ssf = ssf;
1509 ctx->sc_external_id = *auth_id;
1510 BER_BVZERO( auth_id );
1512 BER_BVZERO( &ctx->sc_external_id );
1516 return LDAP_SUCCESS;
1519 int slap_sasl_cbinding( Connection *conn, struct berval *cbv )
1521 #ifdef SASL_CHANNEL_BINDING
1522 sasl_channel_binding_t *cb = ch_malloc( sizeof(*cb) + cbv->bv_len );;
1525 cb->data = (char *)(cb+1);
1526 cb->len = cbv->bv_len;
1527 memcpy( (void *)cb->data, cbv->bv_val, cbv->bv_len );
1528 sasl_setprop( conn->c_sasl_authctx, SASL_CHANNEL_BINDING, cb );
1529 conn->c_sasl_cbind = cb;
1531 return LDAP_SUCCESS;
1534 int slap_sasl_reset( Connection *conn )
1536 return LDAP_SUCCESS;
1539 char ** slap_sasl_mechs( Connection *conn )
1541 char **mechs = NULL;
1543 #ifdef HAVE_CYRUS_SASL
1544 sasl_conn_t *ctx = conn->c_sasl_authctx;
1546 if( ctx == NULL ) ctx = conn->c_sasl_sockctx;
1550 SASL_CONST char *mechstr;
1552 sc = sasl_listmech( ctx,
1553 NULL, NULL, ",", NULL,
1554 &mechstr, NULL, NULL );
1556 if( sc != SASL_OK ) {
1557 Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
1563 mechs = ldap_str2charray( mechstr, "," );
1565 #elif defined(SLAP_BUILTIN_SASL)
1566 /* builtin SASL implementation */
1567 SASL_CTX *ctx = conn->c_sasl_authctx;
1568 if ( ctx != NULL && ctx->sc_external_id.bv_val ) {
1569 /* should check ssf */
1570 mechs = ldap_str2charray( "EXTERNAL", "," );
1577 int slap_sasl_close( Connection *conn )
1579 #ifdef HAVE_CYRUS_SASL
1580 sasl_conn_t *ctx = conn->c_sasl_authctx;
1583 sasl_dispose( &ctx );
1585 if ( conn->c_sasl_sockctx &&
1586 conn->c_sasl_authctx != conn->c_sasl_sockctx )
1588 ctx = conn->c_sasl_sockctx;
1589 sasl_dispose( &ctx );
1592 conn->c_sasl_authctx = NULL;
1593 conn->c_sasl_sockctx = NULL;
1594 conn->c_sasl_done = 0;
1596 free( conn->c_sasl_extra );
1597 conn->c_sasl_extra = NULL;
1599 free( conn->c_sasl_cbind );
1600 conn->c_sasl_cbind = NULL;
1602 #elif defined(SLAP_BUILTIN_SASL)
1603 SASL_CTX *ctx = conn->c_sasl_authctx;
1605 if( ctx->sc_external_id.bv_val ) {
1606 free( ctx->sc_external_id.bv_val );
1607 BER_BVZERO( &ctx->sc_external_id );
1610 conn->c_sasl_authctx = NULL;
1614 return LDAP_SUCCESS;
1617 int slap_sasl_bind( Operation *op, SlapReply *rs )
1619 #ifdef HAVE_CYRUS_SASL
1620 sasl_conn_t *ctx = op->o_conn->c_sasl_authctx;
1621 struct berval response;
1622 unsigned reslen = 0;
1625 Debug(LDAP_DEBUG_ARGS,
1626 "==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
1627 op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "",
1628 op->o_conn->c_sasl_bind_in_progress ? "<continuing>" :
1629 op->o_conn->c_sasl_bind_mech.bv_val,
1630 op->orb_cred.bv_len );
1633 send_ldap_error( op, rs, LDAP_UNAVAILABLE,
1634 "SASL unavailable on this session" );
1638 #define START( ctx, mech, cred, clen, resp, rlen, err ) \
1639 sasl_server_start( ctx, mech, cred, clen, resp, rlen )
1640 #define STEP( ctx, cred, clen, resp, rlen, err ) \
1641 sasl_server_step( ctx, cred, clen, resp, rlen )
1643 if ( !op->o_conn->c_sasl_bind_in_progress ) {
1644 /* If we already authenticated once, must use a new context */
1645 if ( op->o_conn->c_sasl_done ) {
1646 sasl_ssf_t *ssf = NULL;
1647 const char *authid = NULL;
1648 sasl_getprop( ctx, SASL_SSF_EXTERNAL, (void *)&ssf );
1649 sasl_getprop( ctx, SASL_AUTH_EXTERNAL, (void *)&authid );
1650 if ( authid ) authid = ch_strdup( authid );
1651 if ( ctx != op->o_conn->c_sasl_sockctx ) {
1652 sasl_dispose( &ctx );
1654 op->o_conn->c_sasl_authctx = NULL;
1656 slap_sasl_open( op->o_conn, 1 );
1657 ctx = op->o_conn->c_sasl_authctx;
1659 sasl_setprop( ctx, SASL_SSF_EXTERNAL, ssf );
1660 sasl_setprop( ctx, SASL_AUTH_EXTERNAL, authid );
1661 ch_free( (char *)authid );
1665 op->o_conn->c_sasl_bind_mech.bv_val,
1666 op->orb_cred.bv_val, op->orb_cred.bv_len,
1667 (SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
1671 op->orb_cred.bv_val, op->orb_cred.bv_len,
1672 (SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
1675 response.bv_len = reslen;
1677 if ( sc == SASL_OK ) {
1678 sasl_ssf_t *ssf = NULL;
1680 ber_dupbv_x( &op->orb_edn, &op->o_conn->c_sasl_dn, op->o_tmpmemctx );
1681 BER_BVZERO( &op->o_conn->c_sasl_dn );
1682 op->o_conn->c_sasl_done = 1;
1684 rs->sr_err = LDAP_SUCCESS;
1686 (void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
1687 op->orb_ssf = ssf ? *ssf : 0;
1691 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1692 op->o_conn->c_sasl_layers++;
1694 /* If there's an old layer, set sockctx to NULL to
1695 * tell connection_read() to wait for us to finish.
1696 * Otherwise there is a race condition: we have to
1697 * send the Bind response using the old security
1698 * context and then remove it before reading any
1701 if ( op->o_conn->c_sasl_sockctx ) {
1702 ctx = op->o_conn->c_sasl_sockctx;
1703 op->o_conn->c_sasl_sockctx = NULL;
1705 op->o_conn->c_sasl_sockctx = op->o_conn->c_sasl_authctx;
1707 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1710 /* Must send response using old security layer */
1711 rs->sr_sasldata = (response.bv_len ? &response : NULL);
1712 send_ldap_sasl( op, rs );
1714 /* Now dispose of the old security layer.
1717 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1718 ldap_pvt_sasl_remove( op->o_conn->c_sb );
1719 op->o_conn->c_sasl_sockctx = op->o_conn->c_sasl_authctx;
1720 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1721 sasl_dispose( &ctx );
1723 } else if ( sc == SASL_CONTINUE ) {
1724 rs->sr_err = LDAP_SASL_BIND_IN_PROGRESS,
1725 rs->sr_text = sasl_errdetail( ctx );
1726 rs->sr_sasldata = &response;
1727 send_ldap_sasl( op, rs );
1730 BER_BVZERO( &op->o_conn->c_sasl_dn );
1731 rs->sr_text = sasl_errdetail( ctx );
1732 rs->sr_err = slap_sasl_err2ldap( sc ),
1733 send_ldap_result( op, rs );
1736 Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rs->sr_err, 0, 0);
1738 #elif defined(SLAP_BUILTIN_SASL)
1739 /* built-in SASL implementation */
1740 SASL_CTX *ctx = op->o_conn->c_sasl_authctx;
1742 if ( ctx == NULL ) {
1743 send_ldap_error( op, rs, LDAP_OTHER,
1744 "Internal SASL Error" );
1746 } else if ( bvmatch( &ext_bv, &op->o_conn->c_sasl_bind_mech ) ) {
1749 if( op->orb_cred.bv_len ) {
1750 rs->sr_text = "proxy authorization not supported";
1751 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1752 send_ldap_result( op, rs );
1755 op->orb_edn = ctx->sc_external_id;
1756 rs->sr_err = LDAP_SUCCESS;
1757 rs->sr_sasldata = NULL;
1758 send_ldap_sasl( op, rs );
1762 send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
1763 "requested SASL mechanism not supported" );
1766 send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
1767 "SASL not supported" );
1773 char* slap_sasl_secprops( const char *in )
1775 #ifdef HAVE_CYRUS_SASL
1776 int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
1778 return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
1780 return "SASL not supported";
1784 void slap_sasl_secprops_unparse( struct berval *bv )
1786 #ifdef HAVE_CYRUS_SASL
1787 ldap_pvt_sasl_secprops_unparse( &sasl_secprops, bv );
1791 #ifdef HAVE_CYRUS_SASL
1793 slap_sasl_setpass( Operation *op, SlapReply *rs )
1795 struct berval id = BER_BVNULL; /* needs to come from connection */
1796 struct berval new = BER_BVNULL;
1797 struct berval old = BER_BVNULL;
1799 assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );
1801 rs->sr_err = sasl_getprop( op->o_conn->c_sasl_authctx, SASL_USERNAME,
1802 (SASL_CONST void **)(char *)&id.bv_val );
1804 if( rs->sr_err != SASL_OK ) {
1805 rs->sr_text = "unable to retrieve SASL username";
1806 rs->sr_err = LDAP_OTHER;
1810 Debug( LDAP_DEBUG_ARGS, "==> slap_sasl_setpass: \"%s\"\n",
1811 id.bv_val ? id.bv_val : "", 0, 0 );
1813 rs->sr_err = slap_passwd_parse( op->ore_reqdata,
1814 NULL, &old, &new, &rs->sr_text );
1816 if( rs->sr_err != LDAP_SUCCESS ) {
1820 if( new.bv_len == 0 ) {
1821 slap_passwd_generate(&new);
1823 if( new.bv_len == 0 ) {
1824 rs->sr_text = "password generation failed.";
1825 rs->sr_err = LDAP_OTHER;
1829 rs->sr_rspdata = slap_passwd_return( &new );
1832 rs->sr_err = sasl_setpass( op->o_conn->c_sasl_authctx, id.bv_val,
1833 new.bv_val, new.bv_len, old.bv_val, old.bv_len, 0 );
1834 if( rs->sr_err != SASL_OK ) {
1835 rs->sr_text = sasl_errdetail( op->o_conn->c_sasl_authctx );
1837 switch(rs->sr_err) {
1839 rs->sr_err = LDAP_SUCCESS;
1849 rs->sr_err = LDAP_OTHER;
1855 #endif /* HAVE_CYRUS_SASL */
1857 /* Take any sort of identity string and return a DN with the "dn:" prefix. The
1858 * string returned in *dn is in its own allocated memory, and must be free'd
1859 * by the calling process. -Mark Adamson, Carnegie Mellon
1861 * The "dn:" prefix is no longer used anywhere inside slapd. It is only used
1862 * on strings passed in directly from SASL. -Howard Chu, Symas Corp.
1869 int slap_sasl_getdn( Connection *conn, Operation *op, struct berval *id,
1870 char *user_realm, struct berval *dn, int flags )
1872 int rc, is_dn = SET_NONE, do_norm = 1;
1873 struct berval dn2, *mech;
1875 assert( conn != NULL );
1876 assert( id != NULL );
1878 Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: conn %lu id=%s [len=%lu]\n",
1880 BER_BVISNULL( id ) ? "NULL" : ( BER_BVISEMPTY( id ) ? "<empty>" : id->bv_val ),
1881 BER_BVISNULL( id ) ? 0 : ( BER_BVISEMPTY( id ) ? 0 :
1882 (unsigned long) id->bv_len ) );
1885 op = conn->c_sasl_bindop;
1887 assert( op != NULL );
1891 if ( !BER_BVISNULL( id ) ) {
1892 /* Blatantly anonymous ID */
1893 static struct berval bv_anonymous = BER_BVC( "anonymous" );
1895 if ( ber_bvstrcasecmp( id, &bv_anonymous ) == 0 ) {
1896 return( LDAP_SUCCESS );
1900 /* FIXME: if empty, should we stop? */
1901 BER_BVSTR( id, "" );
1904 if ( !BER_BVISEMPTY( &conn->c_sasl_bind_mech ) ) {
1905 mech = &conn->c_sasl_bind_mech;
1907 mech = &conn->c_authmech;
1910 /* An authcID needs to be converted to authzID form. Set the
1911 * values directly into *dn; they will be normalized later. (and
1912 * normalizing always makes a new copy.) An ID from a TLS certificate
1913 * is already normalized, so copy it and skip normalization.
1915 if( flags & SLAP_GETDN_AUTHCID ) {
1916 if( bvmatch( mech, &ext_bv )) {
1917 /* EXTERNAL DNs are already normalized */
1918 assert( !BER_BVISNULL( id ) );
1922 ber_dupbv_x( dn, id, op->o_tmpmemctx );
1925 /* convert to u:<username> form */
1931 if( is_dn == SET_NONE ) {
1932 if( !strncasecmp( id->bv_val, "u:", STRLENOF( "u:" ) ) ) {
1934 dn->bv_val = id->bv_val + STRLENOF( "u:" );
1935 dn->bv_len = id->bv_len - STRLENOF( "u:" );
1937 } else if ( !strncasecmp( id->bv_val, "dn:", STRLENOF( "dn:" ) ) ) {
1939 dn->bv_val = id->bv_val + STRLENOF( "dn:" );
1940 dn->bv_len = id->bv_len - STRLENOF( "dn:" );
1944 /* No other possibilities from here */
1945 if( is_dn == SET_NONE ) {
1947 return( LDAP_INAPPROPRIATE_AUTH );
1950 /* Username strings */
1951 if( is_dn == SET_U ) {
1952 /* ITS#3419: values may need escape */
1954 LDAPAVA *RDNs[ 4 ][ 2 ];
1959 DN[ irdn ] = RDNs[ irdn ];
1960 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1961 AVAs[ irdn ].la_attr = slap_schema.si_ad_uid->ad_cname;
1962 AVAs[ irdn ].la_value = *dn;
1963 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1964 AVAs[ irdn ].la_private = NULL;
1965 RDNs[ irdn ][ 1 ] = NULL;
1967 if ( user_realm && *user_realm ) {
1969 DN[ irdn ] = RDNs[ irdn ];
1970 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1971 AVAs[ irdn ].la_attr = slap_schema.si_ad_cn->ad_cname;
1972 ber_str2bv( user_realm, 0, 0, &AVAs[ irdn ].la_value );
1973 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1974 AVAs[ irdn ].la_private = NULL;
1975 RDNs[ irdn ][ 1 ] = NULL;
1978 if ( !BER_BVISNULL( mech ) ) {
1980 DN[ irdn ] = RDNs[ irdn ];
1981 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1982 AVAs[ irdn ].la_attr = slap_schema.si_ad_cn->ad_cname;
1983 AVAs[ irdn ].la_value = *mech;
1984 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1985 AVAs[ irdn ].la_private = NULL;
1986 RDNs[ irdn ][ 1 ] = NULL;
1990 DN[ irdn ] = RDNs[ irdn ];
1991 RDNs[ irdn ][ 0 ] = &AVAs[ irdn ];
1992 AVAs[ irdn ].la_attr = slap_schema.si_ad_cn->ad_cname;
1993 BER_BVSTR( &AVAs[ irdn ].la_value, "auth" );
1994 AVAs[ irdn ].la_flags = LDAP_AVA_NULL;
1995 AVAs[ irdn ].la_private = NULL;
1996 RDNs[ irdn ][ 1 ] = NULL;
2001 rc = ldap_dn2bv_x( DN, dn, LDAP_DN_FORMAT_LDAPV3,
2003 if ( rc != LDAP_SUCCESS ) {
2008 Debug( LDAP_DEBUG_TRACE,
2009 "slap_sasl_getdn: u:id converted to %s\n",
2014 /* Dup the DN in any case, so we don't risk
2015 * leaks or dangling pointers later,
2016 * and the DN value is '\0' terminated */
2017 ber_dupbv_x( &dn2, dn, op->o_tmpmemctx );
2018 dn->bv_val = dn2.bv_val;
2021 /* All strings are in DN form now. Normalize if needed. */
2023 rc = dnNormalize( 0, NULL, NULL, dn, &dn2, op->o_tmpmemctx );
2025 /* User DNs were constructed above and must be freed now */
2026 slap_sl_free( dn->bv_val, op->o_tmpmemctx );
2028 if ( rc != LDAP_SUCCESS ) {
2035 /* Run thru regexp */
2036 slap_sasl2dn( op, dn, &dn2, flags );
2037 if( !BER_BVISNULL( &dn2 ) ) {
2038 slap_sl_free( dn->bv_val, op->o_tmpmemctx );
2040 Debug( LDAP_DEBUG_TRACE,
2041 "slap_sasl_getdn: dn:id converted to %s\n",
2045 return( LDAP_SUCCESS );