3 * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
10 #include <ac/stdlib.h>
11 #include <ac/string.h>
18 #ifdef HAVE_CYRUS_SASL
21 #ifdef HAVE_SASL_SASL_H
22 #include <sasl/sasl.h>
28 #if SASL_VERSION_MAJOR >= 2
29 #include <sasl/saslplug.h>
30 #define SASL_CONST const
37 /* Flags for telling slap_sasl_getdn() what type of identity is being passed */
38 #define FLAG_GETDN_AUTHCID 2
39 #define FLAG_GETDN_AUTHZID 4
41 static sasl_security_properties_t sasl_secprops;
43 int slap_sasl_config( int cargc, char **cargv, char *line,
44 const char *fname, int lineno )
46 /* set SASL proxy authorization policy */
47 if ( strcasecmp( cargv[0], "sasl-authz-policy" ) == 0 ) {
50 LDAP_LOG( CONFIG, CRIT,
51 "%s: line %d: missing policy in \"sasl-authz-policy <policy>\" line\n",
54 Debug( LDAP_DEBUG_ANY,
55 "%s: line %d: missing policy in \"sasl-authz-policy <policy>\" line\n",
61 if ( slap_sasl_setpolicy( cargv[1] ) ) {
63 LDAP_LOG( CONFIG, CRIT,
64 "%s: line %d: unable "
65 "to parse value \"%s\" "
66 "in \"sasl-authz-policy "
68 fname, lineno, cargv[1] );
70 Debug( LDAP_DEBUG_ANY,
71 "%s: line %d: unable "
72 "to parse value \"%s\" "
73 "in \"sasl-authz-policy "
75 fname, lineno, cargv[1] );
82 } else if ( strcasecmp( cargv[0], "sasl-host" ) == 0 ) {
85 LDAP_LOG( CONFIG, CRIT,
86 "%s: line %d: missing host in \"sasl-host <host>\" line\n",
89 Debug( LDAP_DEBUG_ANY,
90 "%s: line %d: missing host in \"sasl-host <host>\" line\n",
97 if ( global_host != NULL ) {
99 LDAP_LOG( CONFIG, CRIT,
100 "%s: line %d: already set sasl-host!\n",
103 Debug( LDAP_DEBUG_ANY,
104 "%s: line %d: already set sasl-host!\n",
111 global_host = ch_strdup( cargv[1] );
115 } else if ( strcasecmp( cargv[0], "sasl-realm" ) == 0 ) {
118 LDAP_LOG( CONFIG, CRIT,
119 "%s: line %d: missing realm in \"sasl-realm <realm>\" line.\n",
122 Debug( LDAP_DEBUG_ANY,
123 "%s: line %d: missing realm in \"sasl-realm <realm>\" line\n",
130 if ( global_realm != NULL ) {
132 LDAP_LOG( CONFIG, CRIT,
133 "%s: line %d: already set sasl-realm!\n",
136 Debug( LDAP_DEBUG_ANY,
137 "%s: line %d: already set sasl-realm!\n",
144 global_realm = ch_strdup( cargv[1] );
147 } else if ( !strcasecmp( cargv[0], "sasl-regexp" )
148 || !strcasecmp( cargv[0], "saslregexp" ) )
153 LDAP_LOG( CONFIG, CRIT,
154 "%s: line %d: need 2 args in "
155 "\"saslregexp <match> <replace>\"\n",
158 Debug( LDAP_DEBUG_ANY,
159 "%s: line %d: need 2 args in \"saslregexp <match> <replace>\"\n",
165 rc = slap_sasl_regexp_config( cargv[1], cargv[2] );
170 /* SASL security properties */
171 } else if ( strcasecmp( cargv[0], "sasl-secprops" ) == 0 ) {
176 LDAP_LOG( CONFIG, CRIT,
177 "%s: line %d: missing flags in "
178 "\"sasl-secprops <properties>\" line\n",
181 Debug( LDAP_DEBUG_ANY,
182 "%s: line %d: missing flags in \"sasl-secprops <properties>\" line\n",
189 txt = slap_sasl_secprops( cargv[1] );
192 LDAP_LOG( CONFIG, CRIT,
193 "%s: line %d sasl-secprops: %s\n",
194 fname, lineno, txt );
196 Debug( LDAP_DEBUG_ANY,
197 "%s: line %d: sasl-secprops: %s\n",
198 fname, lineno, txt );
214 Connection *conn = context;
218 if ( message == NULL ) {
219 return SASL_BADPARAM;
223 #if SASL_VERSION_MAJOR >= 2
225 level = LDAP_DEBUG_NONE;
229 level = LDAP_DEBUG_ANY;
233 level = LDAP_DEBUG_ANY;
237 level = LDAP_DEBUG_TRACE;
241 level = LDAP_DEBUG_TRACE;
245 level = LDAP_DEBUG_TRACE;
249 level = LDAP_DEBUG_TRACE;
253 level = LDAP_DEBUG_TRACE;
254 label = "Password Trace";
258 level = LDAP_DEBUG_ANY;
261 case SASL_LOG_WARNING:
262 level = LDAP_DEBUG_TRACE;
266 level = LDAP_DEBUG_TRACE;
271 return SASL_BADPARAM;
275 LDAP_LOG( TRANSPORT, ENTRY,
276 "SASL [conn=%ld] %s: %s\n", conn ? conn->c_connid : -1, label, message);
278 Debug( level, "SASL [conn=%ld] %s: %s\n",
279 conn ? conn->c_connid: -1,
288 /* Take any sort of identity string and return a DN with the "dn:" prefix. The
289 string returned in *dn is in its own allocated memory, and must be free'd
290 by the calling process.
291 -Mark Adamson, Carnegie Mellon
293 The "dn:" prefix is no longer used anywhere inside slapd. It is only used
294 on strings passed in directly from SASL.
295 -Howard Chu, Symas Corp.
301 static struct berval ext_bv = { sizeof("EXTERNAL")-1, "EXTERNAL" };
303 int slap_sasl_getdn( Connection *conn, char *id, int len,
304 char *user_realm, struct berval *dn, int flags )
307 int rc, is_dn = 0, do_norm = 1;
312 LDAP_LOG( TRANSPORT, ENTRY,
313 "slap_sasl_getdn: conn %d id=%s\n",
314 conn ? conn->c_connid : -1, id ? (*id ? id : "<empty>") : "NULL", 0 );
316 Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s\n",
317 id?(*id?id:"<empty>"):"NULL",0,0 );
324 if ( len == 0 ) len = strlen( id );
326 /* Blatantly anonymous ID */
327 if ( len == sizeof("anonymous") - 1 &&
328 !strcasecmp( id, "anonymous" ) ) {
329 return( LDAP_SUCCESS );
335 ctx = conn->c_sasl_context;
337 /* An authcID needs to be converted to authzID form. Set the
338 * values directly into *dn; they will be normalized later. (and
339 * normalizing always makes a new copy.) An ID from a TLS certificate
340 * is already normalized, so copy it and skip normalization.
342 if( flags & FLAG_GETDN_AUTHCID ) {
344 if( conn->c_is_tls && conn->c_sasl_bind_mech.bv_len == ext_bv.bv_len
345 && ( strcasecmp( ext_bv.bv_val, conn->c_sasl_bind_mech.bv_val ) == 0 ) ) {
346 /* X.509 DN is already normalized */
349 ber_str2bv( id, len, 1, dn );
354 /* convert to u:<username> form */
361 if( !strncasecmp( id, "u:", sizeof("u:")-1 )) {
365 } else if ( !strncasecmp( id, "dn:", sizeof("dn:")-1) ) {
372 /* No other possibilities from here */
376 return( LDAP_INAPPROPRIATE_AUTH );
379 /* Username strings */
380 if( is_dn == SET_U ) {
382 len = dn->bv_len + sizeof("uid=")-1 + sizeof(",cn=auth")-1;
384 /* username may have embedded realm name */
385 if( ( realm = strchr( dn->bv_val, '@') ) ) {
387 len += sizeof(",cn=")-2;
388 } else if( user_realm && *user_realm ) {
389 len += strlen( user_realm ) + sizeof(",cn=")-1;
392 if( conn->c_sasl_bind_mech.bv_len ) {
393 len += conn->c_sasl_bind_mech.bv_len + sizeof(",cn=")-1;
396 /* Build the new dn */
398 dn->bv_val = ch_malloc( len+1 );
399 p = lutil_strcopy( dn->bv_val, "uid=" );
400 p = lutil_strncopy( p, c1, dn->bv_len );
403 int rlen = dn->bv_len - ( realm - c1 );
404 p = lutil_strcopy( p, ",cn=" );
405 p = lutil_strncopy( p, realm, rlen );
407 } else if( user_realm && *user_realm ) {
408 p = lutil_strcopy( p, ",cn=" );
409 p = lutil_strcopy( p, user_realm );
412 if( conn->c_sasl_bind_mech.bv_len ) {
413 p = lutil_strcopy( p, ",cn=" );
414 p = lutil_strcopy( p, conn->c_sasl_bind_mech.bv_val );
416 p = lutil_strcopy( p, ",cn=auth" );
417 dn->bv_len = p - dn->bv_val;
420 LDAP_LOG( TRANSPORT, ENTRY,
421 "slap_sasl_getdn: u:id converted to %s.\n", dn->bv_val, 0, 0 );
423 Debug( LDAP_DEBUG_TRACE, "getdn: u:id converted to %s\n", dn->bv_val,0,0 );
427 /* All strings are in DN form now. Normalize if needed. */
429 rc = dnNormalize2( NULL, dn, &dn2 );
431 /* User DNs were constructed above and must be freed now */
432 if ( is_dn == SET_U )
433 ch_free( dn->bv_val );
435 if ( rc != LDAP_SUCCESS ) {
443 /* Run thru regexp */
444 slap_sasl2dn( conn, dn, &dn2 );
446 ch_free( dn->bv_val );
449 LDAP_LOG( TRANSPORT, ENTRY,
450 "slap_sasl_getdn: dn:id converted to %s.\n", dn->bv_val, 0, 0 );
452 Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
457 return( LDAP_SUCCESS );
460 #if SASL_VERSION_MAJOR >= 2
461 static const char *slap_propnames[] = {
462 "*slapConn", "*authcDN", "*authzDN", NULL };
464 static Filter *generic_filter;
470 typedef struct lookup_info {
473 const struct propval *list;
474 sasl_server_params_t *sparams;
485 LDAPControl **ctrls )
488 AttributeDescription *ad;
492 slap_callback *tmp = op->o_callback;
493 lookup_info *sl = tmp->sc_private;
495 for( i = 0; i < sl->last; i++ ) {
496 const char *name = sl->list[i].name;
498 if ( name[0] == '*' ) {
499 if ( sl->flags & SASL_AUXPROP_AUTHZID ) continue;
501 } else if ( !(sl->flags & SASL_AUXPROP_AUTHZID ) )
504 if ( sl->list[i].values ) {
505 if ( !(sl->flags & SASL_AUXPROP_OVERRIDE) ) continue;
508 rc = slap_str2ad( name, &ad, &text );
509 if ( rc != LDAP_SUCCESS ) {
511 LDAP_LOG( TRANSPORT, DETAIL1,
512 "slap_auxprop: str2ad(%s): %s\n", name, text, 0 );
514 Debug( LDAP_DEBUG_TRACE,
515 "slap_auxprop: str2ad(%s): %s\n", name, text, 0 );
519 a = attr_find( e->e_attrs, ad );
521 if ( ! access_allowed( be, conn, op, e, ad, NULL, ACL_AUTH, NULL ) )
523 if ( sl->list[i].values && ( sl->flags & SASL_AUXPROP_OVERRIDE ) )
524 sl->sparams->utils->prop_erase( sl->sparams->propctx, sl->list[i].name );
525 for ( bv = a->a_vals; bv->bv_val; bv++ ) {
526 sl->sparams->utils->prop_set( sl->sparams->propctx, sl->list[i].name,
527 bv->bv_val, bv->bv_len );
536 sasl_server_params_t *sparams,
543 Connection *conn = NULL;
546 sl.list = sparams->utils->prop_get( sparams->propctx );
547 sl.sparams = sparams;
550 /* Find our DN and conn first */
551 for( i = 0, sl.last = 0; sl.list[i].name; i++ ) {
552 if ( sl.list[i].name[0] == '*' ) {
553 if ( !strcmp( sl.list[i].name, slap_propnames[PROP_CONN] ) ) {
554 if ( sl.list[i].values && sl.list[i].values[0] )
555 AC_MEMCPY( &conn, sl.list[i].values[0], sizeof( conn ) );
556 if ( !sl.last ) sl.last = i;
558 if ( (flags & SASL_AUXPROP_AUTHZID) &&
559 !strcmp( sl.list[i].name, slap_propnames[PROP_AUTHZ] ) ) {
561 if ( sl.list[i].values && sl.list[i].values[0] )
562 AC_MEMCPY( &dn, sl.list[i].values[0], sizeof( dn ) );
563 if ( !sl.last ) sl.last = i;
566 if ( !strcmp( sl.list[i].name, slap_propnames[PROP_AUTHC] ) ) {
567 if ( !sl.last ) sl.last = i;
568 if ( sl.list[i].values && sl.list[i].values[0] ) {
569 AC_MEMCPY( &dn, sl.list[i].values[0], sizeof( dn ) );
570 if ( !(flags & SASL_AUXPROP_AUTHZID) )
577 /* Now see what else needs to be fetched */
578 for( i = 0; i < sl.last; i++ ) {
579 const char *name = sl.list[i].name;
581 if ( name[0] == '*' ) {
582 if ( flags & SASL_AUXPROP_AUTHZID ) continue;
584 } else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
587 if ( sl.list[i].values ) {
588 if ( !(flags & SASL_AUXPROP_OVERRIDE) ) continue;
596 slap_callback cb = { slap_cb_null_response,
597 slap_cb_null_sresult, sasl_ap_lookup, NULL };
601 be = select_backend( &dn, 0, 1 );
603 if ( be && be->be_search ) {
604 op.o_tag = LDAP_REQ_SEARCH;
605 op.o_protocol = LDAP_VERSION3;
606 op.o_ndn = conn->c_ndn;
608 op.o_time = slap_get_time();
609 op.o_do_not_cache = 1;
610 op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
612 (*be->be_search)( be, conn, &op, NULL, &dn,
613 LDAP_SCOPE_BASE, LDAP_DEREF_NEVER, 1, 0,
614 generic_filter, NULL, NULL, 0 );
619 static sasl_auxprop_plug_t slap_auxprop_plugin = {
622 NULL, /* glob_context */
623 NULL, /* auxprop_free */
631 const sasl_utils_t *utils,
634 sasl_auxprop_plug_t **plug,
635 const char *plugname)
637 if ( !out_version | !plug ) return SASL_BADPARAM;
639 if ( max_version < SASL_AUXPROP_PLUG_VERSION ) return SASL_BADVERS;
641 *out_version = SASL_AUXPROP_PLUG_VERSION;
642 *plug = &slap_auxprop_plugin;
646 typedef struct checkpass_info {
659 LDAPControl **ctrls )
661 slap_callback *tmp = op->o_callback;
662 checkpass_info *ci = tmp->sc_private;
666 ci->rc = SASL_NOVERIFY;
668 a = attr_find( e->e_attrs, slap_schema.si_ad_userPassword );
670 if ( ! access_allowed( be, conn, op, e, slap_schema.si_ad_userPassword,
671 NULL, ACL_AUTH, NULL ) ) return 0;
673 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
674 if ( !lutil_passwd( bv, &ci->cred, NULL ) ) {
686 const char *username,
689 struct propctx *propctx)
691 Connection *conn = (Connection *)context;
699 /* SASL will fallback to its own mechanisms if we don't
700 * find an answer here.
703 rc = slap_sasl_getdn( conn, (char *)username, 0, NULL, &dn,
704 FLAG_GETDN_AUTHCID );
705 if ( rc != LDAP_SUCCESS ) {
706 sasl_seterror( sconn, 0, ldap_err2string( rc ) );
710 if ( dn.bv_len == 0 ) {
711 sasl_seterror( sconn, 0,
712 "No password is associated with the Root DSE" );
713 if ( dn.bv_val != NULL ) {
714 ch_free( dn.bv_val );
719 be = select_backend( &dn, 0, 1 );
720 if ( be && be->be_search ) {
722 slap_callback cb = { slap_cb_null_response,
723 slap_cb_null_sresult, sasl_cb_checkpass, NULL };
725 ci.cred.bv_val = (char *)pass;
726 ci.cred.bv_len = passlen;
729 op.o_tag = LDAP_REQ_SEARCH;
730 op.o_protocol = LDAP_VERSION3;
731 op.o_ndn = conn->c_ndn;
733 op.o_time = slap_get_time();
734 op.o_do_not_cache = 1;
735 op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
737 (*be->be_search)( be, conn, &op, NULL, &dn,
738 LDAP_SCOPE_BASE, LDAP_DEREF_NEVER, 1, 0,
739 generic_filter, NULL, NULL, 0 );
741 if ( ci.rc != SASL_OK ) {
742 sasl_seterror( sconn, 0,
743 ldap_err2string( LDAP_INVALID_CREDENTIALS ) );
746 ch_free( dn.bv_val );
751 /* Convert a SASL authcid or authzid into a DN. Store the DN in an
752 * auxiliary property, so that we can refer to it in sasl_authorize
753 * without interfering with anything else. Also, the SASL username
754 * buffer is constrained to 256 characters, and our DNs could be
755 * much longer (totally arbitrary length)...
758 slap_sasl_canonicalize(
764 const char *user_realm,
769 Connection *conn = (Connection *)context;
770 struct propctx *props = sasl_auxprop_getctx( sconn );
771 struct propval auxvals[3];
774 const char *names[2];
779 LDAP_LOG( TRANSPORT, ENTRY,
780 "slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
781 conn ? conn->c_connid : -1,
782 (flags & SASL_CU_AUTHID) ? "authcid" : "authzid", in ? in : "<empty>");
784 Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: "
786 conn ? conn->c_connid : -1,
787 (flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
788 in ? in : "<empty>" );
791 /* If name is too big, just truncate. We don't care, we're
792 * using DNs, not the usernames.
794 if ( inlen > out_max )
797 /* See if we need to add request, can only do it once */
798 prop_getnames( props, slap_propnames, auxvals );
799 if ( !auxvals[0].name )
800 prop_request( props, slap_propnames );
802 if ( flags & SASL_CU_AUTHID )
807 /* Need to store the Connection for auxprop_lookup */
808 if ( !auxvals[PROP_CONN].values ) {
809 names[0] = slap_propnames[PROP_CONN];
811 prop_set( props, names[0], (char *)&conn, sizeof( conn ) );
814 /* Already been here? */
815 if ( auxvals[which].values )
818 if ( flags == SASL_CU_AUTHZID ) {
819 /* If we got unqualified authzid's, they probably came from SASL
820 * itself just passing the authcid to us. Look inside the oparams
821 * structure to see if that's true. (HACK: the out_len pointer is
822 * the address of a member of a sasl_out_params_t structure...)
824 sasl_out_params_t dummy;
825 int offset = (void *)&dummy.ulen - (void *)&dummy.authid;
826 char **authid = (void *)out_len - offset;
827 if ( *authid && !strcmp( in, *authid ) )
831 rc = slap_sasl_getdn( conn, (char *)in, inlen, (char *)user_realm, &dn,
832 (flags & SASL_CU_AUTHID) ? FLAG_GETDN_AUTHCID : FLAG_GETDN_AUTHZID );
833 if ( rc != LDAP_SUCCESS ) {
834 sasl_seterror( sconn, 0, ldap_err2string( rc ) );
838 names[0] = slap_propnames[which];
841 prop_set( props, names[0], (char *)&dn, sizeof( dn ) );
844 LDAP_LOG( TRANSPORT, ENTRY,
845 "slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
846 conn ? conn->c_connid : -1, names[0]+1, dn.bv_val );
848 Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: "
850 conn ? conn->c_connid : -1,
851 names[0]+1, dn.bv_val );
853 done: AC_MEMCPY( out, in, inlen );
865 char *requested_user,
869 const char *def_realm,
871 struct propctx *props)
873 Connection *conn = (Connection *)context;
874 struct propval auxvals[3];
875 struct berval authcDN, authzDN;
879 LDAP_LOG( TRANSPORT, ENTRY,
880 "slap_sasl_authorize: conn %d authcid=\"%s\" authzid=\"%s\"\n",
881 conn ? conn->c_connid : -1, auth_identity, requested_user);
883 Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
884 "authcid=\"%s\" authzid=\"%s\"\n",
885 conn ? conn->c_connid : -1, auth_identity, requested_user );
887 if ( conn->c_sasl_dn.bv_val ) {
888 ch_free( conn->c_sasl_dn.bv_val );
889 conn->c_sasl_dn.bv_val = NULL;
890 conn->c_sasl_dn.bv_len = 0;
894 prop_getnames( props, slap_propnames+1, auxvals );
896 AC_MEMCPY( &authcDN, auxvals[0].values[0], sizeof(authcDN) );
898 /* Nothing to do if no authzID was given */
899 if ( !auxvals[1].name || !auxvals[1].values ) {
900 conn->c_sasl_dn = authcDN;
904 AC_MEMCPY( &authzDN, auxvals[1].values[0], sizeof(authzDN) );
906 rc = slap_sasl_authorized( conn, &authcDN, &authzDN );
907 ch_free( authcDN.bv_val );
908 if ( rc != LDAP_SUCCESS ) {
910 LDAP_LOG( TRANSPORT, INFO,
911 "slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
912 (long)(conn ? conn->c_connid : -1), rc, 0 );
914 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
915 " authorization disallowed (%d)\n",
916 (long) (conn ? conn->c_connid : -1), rc, 0 );
919 sasl_seterror( sconn, 0, "not authorized" );
920 ch_free( authzDN.bv_val );
924 conn->c_sasl_dn = authzDN;
927 LDAP_LOG( TRANSPORT, ENTRY,
928 "slap_sasl_authorize: conn %d authorization allowed\n",
929 (long)(conn ? conn->c_connid : -1), 0, 0 );
931 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
932 " authorization allowed\n",
933 (long) (conn ? conn->c_connid : -1), 0, 0 );
946 struct berval authcDN, authzDN;
948 Connection *conn = context;
952 if ( conn->c_sasl_dn.bv_val ) {
953 ch_free( conn->c_sasl_dn.bv_val );
954 conn->c_sasl_dn.bv_val = NULL;
955 conn->c_sasl_dn.bv_len = 0;
959 LDAP_LOG( TRANSPORT, ENTRY,
960 "slap_sasl_authorize: conn %d authcid=\"%s\" authzid=\"%s\"\n",
961 conn ? conn->c_connid : -1, authcid ? authcid : "<empty>",
962 authzid ? authzid : "<empty>" );
964 Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
965 "authcid=\"%s\" authzid=\"%s\"\n",
966 (long) (conn ? conn->c_connid : -1),
967 authcid ? authcid : "<empty>",
968 authzid ? authzid : "<empty>" );
971 /* Figure out how much data we have for the dn */
972 rc = sasl_getprop( conn->c_sasl_context, SASL_REALM, (void **)&realm );
973 if( rc != SASL_OK && rc != SASL_NOTDONE ) {
975 LDAP_LOG( TRANSPORT, ERR,
976 "slap_sasl_authorize: getprop(REALM) failed.\n", 0, 0, 0 );
978 Debug(LDAP_DEBUG_TRACE,
979 "authorize: getprop(REALM) failed!\n", 0,0,0);
981 *errstr = "Could not extract realm";
985 /* Convert the identities to DN's. If no authzid was given, client will
986 be bound as the DN matching their username */
987 rc = slap_sasl_getdn( conn, (char *)authcid, 0, realm, &authcDN, FLAG_GETDN_AUTHCID );
988 if( rc != LDAP_SUCCESS ) {
989 *errstr = ldap_err2string( rc );
992 if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
994 LDAP_LOG( TRANSPORT, ENTRY,
995 "slap_sasl_authorize: conn %d Using authcDN=%s\n",
996 conn ? conn->c_connid : -1, authcDN.bv_val, 0 );
998 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
999 "Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN.bv_val,0 );
1002 conn->c_sasl_dn = authcDN;
1006 rc = slap_sasl_getdn( conn, (char *)authzid, 0, realm, &authzDN, FLAG_GETDN_AUTHZID );
1007 if( rc != LDAP_SUCCESS ) {
1008 ch_free( authcDN.bv_val );
1009 *errstr = ldap_err2string( rc );
1010 return SASL_NOAUTHZ;
1013 rc = slap_sasl_authorized(conn, &authcDN, &authzDN );
1014 ch_free( authcDN.bv_val );
1017 LDAP_LOG( TRANSPORT, INFO,
1018 "slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
1019 (long)(conn ? conn->c_connid : -1), rc, 0 );
1021 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
1022 " authorization disallowed (%d)\n",
1023 (long) (conn ? conn->c_connid : -1), rc, 0 );
1026 *errstr = "not authorized";
1027 ch_free( authzDN.bv_val );
1028 return SASL_NOAUTHZ;
1032 LDAP_LOG( TRANSPORT, RESULTS,
1033 "slap_sasl_authorize: conn %d authorization allowed\n",
1034 (long)(conn ? conn->c_connid : -1 ), 0, 0 );
1036 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
1037 " authorization allowed\n",
1038 (long) (conn ? conn->c_connid : -1), 0, 0 );
1041 conn->c_sasl_dn = authzDN;
1045 #endif /* SASL_VERSION_MAJOR >= 2 */
1048 slap_sasl_err2ldap( int saslerr )
1054 rc = LDAP_SASL_BIND_IN_PROGRESS;
1063 rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1066 rc = LDAP_INVALID_CREDENTIALS;
1069 rc = LDAP_INSUFFICIENT_ACCESS;
1073 rc = LDAP_INAPPROPRIATE_AUTH;
1085 int slap_sasl_init( void )
1087 #ifdef HAVE_CYRUS_SASL
1089 static sasl_callback_t server_callbacks[] = {
1090 { SASL_CB_LOG, &slap_sasl_log, NULL },
1091 { SASL_CB_LIST_END, NULL, NULL }
1101 ldap_pvt_sasl_mutex_new,
1102 ldap_pvt_sasl_mutex_lock,
1103 ldap_pvt_sasl_mutex_unlock,
1104 ldap_pvt_sasl_mutex_dispose );
1106 #if SASL_VERSION_MAJOR >= 2
1107 sasl_auxprop_add_plugin( "slapd", slap_auxprop_init );
1109 /* should provide callbacks for logging */
1110 /* server name should be configurable */
1111 rc = sasl_server_init( server_callbacks, "slapd" );
1113 if( rc != SASL_OK ) {
1115 LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: init failed.\n", 0, 0, 0 );
1117 Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
1125 LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: initialized!\n", 0, 0, 0 );
1127 Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
1132 /* default security properties */
1133 memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
1134 sasl_secprops.max_ssf = INT_MAX;
1135 sasl_secprops.maxbufsize = 65536;
1136 sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
1142 int slap_sasl_destroy( void )
1144 #ifdef HAVE_CYRUS_SASL
1147 #if SASL_VERSION_MAJOR >= 2
1148 filter_free( generic_filter );
1150 free( global_host );
1156 int slap_sasl_open( Connection *conn )
1158 int cb, sc = LDAP_SUCCESS;
1159 #if SASL_VERSION_MAJOR >= 2
1160 char *ipremoteport = NULL, *iplocalport = NULL;
1163 #ifdef HAVE_CYRUS_SASL
1164 sasl_conn_t *ctx = NULL;
1165 sasl_callback_t *session_callbacks;
1167 assert( conn->c_sasl_context == NULL );
1168 assert( conn->c_sasl_extra == NULL );
1170 conn->c_sasl_layers = 0;
1173 #if SASL_VERSION_MAJOR >= 2
1174 ch_calloc( 5, sizeof(sasl_callback_t));
1176 ch_calloc( 3, sizeof(sasl_callback_t));
1178 conn->c_sasl_extra = session_callbacks;
1180 session_callbacks[cb=0].id = SASL_CB_LOG;
1181 session_callbacks[cb].proc = &slap_sasl_log;
1182 session_callbacks[cb++].context = conn;
1184 session_callbacks[cb].id = SASL_CB_PROXY_POLICY;
1185 session_callbacks[cb].proc = &slap_sasl_authorize;
1186 session_callbacks[cb++].context = conn;
1188 #if SASL_VERSION_MAJOR >= 2
1189 session_callbacks[cb].id = SASL_CB_CANON_USER;
1190 session_callbacks[cb].proc = &slap_sasl_canonicalize;
1191 session_callbacks[cb++].context = conn;
1193 /* XXXX: this should be conditional */
1194 session_callbacks[cb].id = SASL_CB_SERVER_USERDB_CHECKPASS;
1195 session_callbacks[cb].proc = &slap_sasl_checkpass;
1196 session_callbacks[cb++].context = conn;
1199 session_callbacks[cb].id = SASL_CB_LIST_END;
1200 session_callbacks[cb].proc = NULL;
1201 session_callbacks[cb++].context = NULL;
1203 if( global_host == NULL ) {
1204 global_host = ldap_pvt_get_fqdn( NULL );
1207 /* create new SASL context */
1208 #if SASL_VERSION_MAJOR >= 2
1209 if ( generic_filter == NULL ) {
1210 generic_filter = str2filter( "(objectclass=*)" );
1212 if ( conn->c_sock_name.bv_len != 0 &&
1213 strncmp( conn->c_sock_name.bv_val, "IP=", 3 ) == 0) {
1216 iplocalport = ch_strdup( conn->c_sock_name.bv_val + 3 );
1217 /* Convert IPv6 addresses to address;port syntax. */
1218 p = strrchr( iplocalport, ' ' );
1219 /* Convert IPv4 addresses to address;port syntax. */
1220 if ( p == NULL ) p = strchr( iplocalport, ':' );
1225 if ( conn->c_peer_name.bv_len != 0 &&
1226 strncmp( conn->c_peer_name.bv_val, "IP=", 3 ) == 0) {
1229 ipremoteport = ch_strdup( conn->c_peer_name.bv_val + 3 );
1230 /* Convert IPv6 addresses to address;port syntax. */
1231 p = strrchr( ipremoteport, ' ' );
1232 /* Convert IPv4 addresses to address;port syntax. */
1233 if ( p == NULL ) p = strchr( ipremoteport, ':' );
1238 sc = sasl_server_new( "ldap", global_host, global_realm,
1239 iplocalport, ipremoteport, session_callbacks, 0, &ctx );
1240 if ( iplocalport != NULL ) {
1241 ch_free( iplocalport );
1243 if ( ipremoteport != NULL ) {
1244 ch_free( ipremoteport );
1247 sc = sasl_server_new( "ldap", global_host, global_realm,
1248 session_callbacks, SASL_SECURITY_LAYER, &ctx );
1251 if( sc != SASL_OK ) {
1253 LDAP_LOG( TRANSPORT, ERR,
1254 "slap_sasl_open: sasl_server_new failed: %d\n", sc, 0, 0 );
1256 Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
1263 conn->c_sasl_context = ctx;
1265 if( sc == SASL_OK ) {
1266 sc = sasl_setprop( ctx,
1267 SASL_SEC_PROPS, &sasl_secprops );
1269 if( sc != SASL_OK ) {
1271 LDAP_LOG( TRANSPORT, ERR,
1272 "slap_sasl_open: sasl_setprop failed: %d \n", sc, 0, 0 );
1274 Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
1278 slap_sasl_close( conn );
1283 sc = slap_sasl_err2ldap( sc );
1288 int slap_sasl_external(
1291 const char *auth_id )
1293 #if SASL_VERSION_MAJOR >= 2
1295 sasl_conn_t *ctx = conn->c_sasl_context;
1297 if ( ctx == NULL ) {
1298 return LDAP_UNAVAILABLE;
1301 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
1303 if ( sc != SASL_OK ) {
1307 sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL, auth_id );
1309 if ( sc != SASL_OK ) {
1313 #elif defined(HAVE_CYRUS_SASL)
1315 sasl_conn_t *ctx = conn->c_sasl_context;
1316 sasl_external_properties_t extprops;
1318 if ( ctx == NULL ) {
1319 return LDAP_UNAVAILABLE;
1322 memset( &extprops, '\0', sizeof(extprops) );
1324 extprops.auth_id = (char *) auth_id;
1326 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
1327 (void *) &extprops );
1329 if ( sc != SASL_OK ) {
1334 return LDAP_SUCCESS;
1337 int slap_sasl_reset( Connection *conn )
1339 #ifdef HAVE_CYRUS_SASL
1340 sasl_conn_t *ctx = conn->c_sasl_context;
1345 /* must return "anonymous" */
1346 return LDAP_SUCCESS;
1349 char ** slap_sasl_mechs( Connection *conn )
1351 char **mechs = NULL;
1353 #ifdef HAVE_CYRUS_SASL
1354 sasl_conn_t *ctx = conn->c_sasl_context;
1358 SASL_CONST char *mechstr;
1360 sc = sasl_listmech( ctx,
1361 NULL, NULL, ",", NULL,
1362 &mechstr, NULL, NULL );
1364 if( sc != SASL_OK ) {
1366 LDAP_LOG( TRANSPORT, ERR,
1367 "slap_sasl_mechs: sasl_listmech failed: %d\n", sc, 0, 0 );
1369 Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
1376 mechs = ldap_str2charray( mechstr, "," );
1378 #if SASL_VERSION_MAJOR < 2
1387 int slap_sasl_close( Connection *conn )
1389 #ifdef HAVE_CYRUS_SASL
1390 sasl_conn_t *ctx = conn->c_sasl_context;
1393 sasl_dispose( &ctx );
1396 conn->c_sasl_context = NULL;
1398 free( conn->c_sasl_extra );
1399 conn->c_sasl_extra = NULL;
1402 return LDAP_SUCCESS;
1410 struct berval *cred,
1416 #ifdef HAVE_CYRUS_SASL
1417 sasl_conn_t *ctx = conn->c_sasl_context;
1418 struct berval response;
1419 unsigned reslen = 0;
1420 const char *errstr = NULL;
1424 LDAP_LOG( TRANSPORT, ENTRY,
1425 "sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
1426 dn->bv_len ? dn->bv_val : "",
1427 conn->c_sasl_bind_in_progress ? "<continuing>" :
1428 conn->c_sasl_bind_mech.bv_val,
1429 cred ? cred->bv_len : 0 );
1431 Debug(LDAP_DEBUG_ARGS,
1432 "==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
1433 dn->bv_len ? dn->bv_val : "",
1434 conn->c_sasl_bind_in_progress ? "<continuing>":conn->c_sasl_bind_mech.bv_val,
1435 cred ? cred->bv_len : 0 );
1440 send_ldap_result( conn, op, LDAP_UNAVAILABLE,
1441 NULL, "SASL unavailable on this session", NULL, NULL );
1445 #if SASL_VERSION_MAJOR >= 2
1446 #define START( ctx, mech, cred, clen, resp, rlen, err ) \
1447 sasl_server_start( ctx, mech, cred, clen, resp, rlen )
1448 #define STEP( ctx, cred, clen, resp, rlen, err ) \
1449 sasl_server_step( ctx, cred, clen, resp, rlen )
1451 #define START( ctx, mech, cred, clen, resp, rlen, err ) \
1452 sasl_server_start( ctx, mech, cred, clen, resp, rlen, err )
1453 #define STEP( ctx, cred, clen, resp, rlen, err ) \
1454 sasl_server_step( ctx, cred, clen, resp, rlen, err )
1457 if ( !conn->c_sasl_bind_in_progress ) {
1459 conn->c_sasl_bind_mech.bv_val,
1460 cred->bv_len ? cred->bv_val : "",
1462 (SASL_CONST char **)&response.bv_val, &reslen, &errstr );
1466 cred->bv_val, cred->bv_len,
1467 (SASL_CONST char **)&response.bv_val, &reslen, &errstr );
1470 response.bv_len = reslen;
1472 if ( sc == SASL_OK ) {
1473 sasl_ssf_t *ssf = NULL;
1475 *edn = conn->c_sasl_dn;
1476 conn->c_sasl_dn.bv_val = NULL;
1477 conn->c_sasl_dn.bv_len = 0;
1481 (void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
1482 *ssfp = ssf ? *ssf : 0;
1485 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1486 conn->c_sasl_layers++;
1487 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1490 send_ldap_sasl( conn, op, rc,
1491 NULL, NULL, NULL, NULL,
1492 response.bv_len ? &response : NULL );
1494 } else if ( sc == SASL_CONTINUE ) {
1495 send_ldap_sasl( conn, op, rc = LDAP_SASL_BIND_IN_PROGRESS,
1496 NULL, NULL, NULL, NULL, &response );
1499 #if SASL_VERSION_MAJOR >= 2
1500 errstr = sasl_errdetail( ctx );
1502 send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
1503 NULL, errstr, NULL, NULL );
1506 #if SASL_VERSION_MAJOR < 2
1507 if( response.bv_len ) {
1508 ch_free( response.bv_val );
1513 LDAP_LOG( TRANSPORT, RESULTS, "slap_sasl_bind: rc=%d\n", rc, 0, 0 );
1515 Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rc, 0, 0);
1520 send_ldap_result( conn, op, rc = LDAP_UNAVAILABLE,
1521 NULL, "SASL not supported", NULL, NULL );
1527 char* slap_sasl_secprops( const char *in )
1529 #ifdef HAVE_CYRUS_SASL
1530 int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
1532 return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
1534 return "SASL not supported";
1538 #ifdef HAVE_CYRUS_SASL
1544 struct berval *reqdata,
1546 struct berval **rspdata,
1547 LDAPControl *** rspctrls,
1551 struct berval id = { 0, NULL }; /* needs to come from connection */
1552 struct berval new = { 0, NULL };
1553 struct berval old = { 0, NULL };
1555 assert( reqoid != NULL );
1556 assert( strcmp( LDAP_EXOP_MODIFY_PASSWD, reqoid ) == 0 );
1558 rc = sasl_getprop( conn->c_sasl_context, SASL_USERNAME,
1559 (SASL_CONST void **)&id.bv_val );
1561 if( rc != SASL_OK ) {
1562 *text = "unable to retrieve SASL username";
1568 LDAP_LOG( BACKEND, ENTRY,
1569 "slap_sasl_setpass: \"%s\"\n",
1570 id.bv_val ? id.bv_val : "", 0, 0);
1572 Debug( LDAP_DEBUG_ARGS, "==> slap_sasl_setpass: \"%s\"\n",
1573 id.bv_val ? id.bv_val : "", 0, 0 );
1576 rc = slap_passwd_parse( reqdata,
1577 NULL, &old, &new, text );
1579 if( rc != LDAP_SUCCESS ) {
1583 if( new.bv_len == 0 ) {
1584 slap_passwd_generate(&new);
1586 if( new.bv_len == 0 ) {
1587 *text = "password generation failed.";
1592 *rspdata = slap_passwd_return( &new );
1595 #if SASL_VERSION_MAJOR < 2
1596 rc = sasl_setpass( conn->c_sasl_context,
1597 id.bv_val, new.bv_val, new.bv_len, 0, text );
1599 rc = sasl_setpass( conn->c_sasl_context, id.bv_val,
1600 new.bv_val, new.bv_len, old.bv_val, old.bv_len, 0 );
1601 if( rc != SASL_OK ) {
1602 *text = sasl_errdetail( conn->c_sasl_context );