1 /* tls.c - Handle tls/ssl. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2013 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
16 /* ACKNOWLEDGEMENTS: restructured by Howard Chu.
20 #include "ldap_config.h"
24 #include <ac/stdlib.h>
26 #include <ac/socket.h>
27 #include <ac/string.h>
30 #include <ac/unistd.h>
32 #include <ac/dirent.h>
40 static tls_impl *tls_imp = &ldap_int_tls_impl;
41 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
42 (void *)tls_imp->ti_sbio )
47 #define LDAP_USE_NON_BLOCKING_TLS
48 #endif /* LDAP_DEVEL */
50 /* RFC2459 minimum required set of supported attribute types
53 typedef struct oid_name {
58 static oid_name oids[] = {
59 { BER_BVC("2.5.4.3"), BER_BVC("cn") },
60 { BER_BVC("2.5.4.4"), BER_BVC("sn") },
61 { BER_BVC("2.5.4.6"), BER_BVC("c") },
62 { BER_BVC("2.5.4.7"), BER_BVC("l") },
63 { BER_BVC("2.5.4.8"), BER_BVC("st") },
64 { BER_BVC("2.5.4.10"), BER_BVC("o") },
65 { BER_BVC("2.5.4.11"), BER_BVC("ou") },
66 { BER_BVC("2.5.4.12"), BER_BVC("title") },
67 { BER_BVC("2.5.4.41"), BER_BVC("name") },
68 { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
69 { BER_BVC("2.5.4.43"), BER_BVC("initials") },
70 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
71 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
72 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
73 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
74 { BER_BVNULL, BER_BVNULL }
80 ldap_pvt_tls_ctx_free ( void *c )
83 tls_imp->ti_ctx_free( c );
87 tls_ctx_ref( tls_ctx *ctx )
91 tls_imp->ti_ctx_ref( ctx );
96 * an extra mutex for the default ctx.
98 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
102 ldap_int_tls_destroy( struct ldapoptions *lo )
104 if ( lo->ldo_tls_ctx ) {
105 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
106 lo->ldo_tls_ctx = NULL;
109 if ( lo->ldo_tls_certfile ) {
110 LDAP_FREE( lo->ldo_tls_certfile );
111 lo->ldo_tls_certfile = NULL;
113 if ( lo->ldo_tls_keyfile ) {
114 LDAP_FREE( lo->ldo_tls_keyfile );
115 lo->ldo_tls_keyfile = NULL;
117 if ( lo->ldo_tls_dhfile ) {
118 LDAP_FREE( lo->ldo_tls_dhfile );
119 lo->ldo_tls_dhfile = NULL;
121 if ( lo->ldo_tls_ecname ) {
122 LDAP_FREE( lo->ldo_tls_ecname );
123 lo->ldo_tls_ecname = NULL;
125 if ( lo->ldo_tls_cacertfile ) {
126 LDAP_FREE( lo->ldo_tls_cacertfile );
127 lo->ldo_tls_cacertfile = NULL;
129 if ( lo->ldo_tls_cacertdir ) {
130 LDAP_FREE( lo->ldo_tls_cacertdir );
131 lo->ldo_tls_cacertdir = NULL;
133 if ( lo->ldo_tls_ciphersuite ) {
134 LDAP_FREE( lo->ldo_tls_ciphersuite );
135 lo->ldo_tls_ciphersuite = NULL;
137 if ( lo->ldo_tls_crlfile ) {
138 LDAP_FREE( lo->ldo_tls_crlfile );
139 lo->ldo_tls_crlfile = NULL;
144 * Tear down the TLS subsystem. Should only be called once.
147 ldap_pvt_tls_destroy( void )
149 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
151 ldap_int_tls_destroy( lo );
153 tls_imp->ti_tls_destroy();
157 * Initialize a particular TLS implementation.
158 * Called once per implementation.
161 tls_init(tls_impl *impl )
163 static int tls_initialized = 0;
165 if ( !tls_initialized++ ) {
166 #ifdef LDAP_R_COMPILE
167 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
171 if ( impl->ti_inited++ ) return 0;
173 #ifdef LDAP_R_COMPILE
176 return impl->ti_tls_init();
180 * Initialize TLS subsystem. Called once per implementation.
183 ldap_pvt_tls_init( void )
185 return tls_init( tls_imp );
189 * initialize a new TLS context
192 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
195 tls_impl *ti = tls_imp;
196 struct ldaptls lts = lo->ldo_tls_info;
198 if ( lo->ldo_tls_ctx )
203 if ( is_server && !lts.lt_certfile && !lts.lt_keyfile &&
204 !lts.lt_cacertfile && !lts.lt_cacertdir ) {
205 /* minimum configuration not provided */
206 return LDAP_NOT_SUPPORTED;
210 /* This ASCII/EBCDIC handling is a real pain! */
211 if ( lts.lt_ciphersuite ) {
212 lts.lt_ciphersuite = LDAP_STRDUP( lts.lt_ciphersuite );
213 __atoe( lts.lt_ciphersuite );
215 if ( lts.lt_cacertfile ) {
216 lts.lt_cacertfile = LDAP_STRDUP( lts.lt_cacertfile );
217 __atoe( lts.lt_cacertfile );
219 if ( lts.lt_certfile ) {
220 lts.lt_certfile = LDAP_STRDUP( lts.lt_certfile );
221 __atoe( lts.lt_certfile );
223 if ( lts.lt_keyfile ) {
224 lts.lt_keyfile = LDAP_STRDUP( lts.lt_keyfile );
225 __atoe( lts.lt_keyfile );
227 if ( lts.lt_crlfile ) {
228 lts.lt_crlfile = LDAP_STRDUP( lts.lt_crlfile );
229 __atoe( lts.lt_crlfile );
231 if ( lts.lt_cacertdir ) {
232 lts.lt_cacertdir = LDAP_STRDUP( lts.lt_cacertdir );
233 __atoe( lts.lt_cacertdir );
235 if ( lts.lt_dhfile ) {
236 lts.lt_dhfile = LDAP_STRDUP( lts.lt_dhfile );
237 __atoe( lts.lt_dhfile );
239 if ( lts.lt_ecname ) {
240 lts.lt_ecname = LDAP_STRDUP( lts.lt_ecname );
241 __atoe( lts.lt_ecname );
244 lo->ldo_tls_ctx = ti->ti_ctx_new( lo );
245 if ( lo->ldo_tls_ctx == NULL ) {
246 Debug( LDAP_DEBUG_ANY,
247 "TLS: could not allocate default ctx.\n",
253 rc = ti->ti_ctx_init( lo, <s, is_server );
256 if ( rc < 0 && lo->ldo_tls_ctx != NULL ) {
257 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
258 lo->ldo_tls_ctx = NULL;
261 LDAP_FREE( lts.lt_ciphersuite );
262 LDAP_FREE( lts.lt_cacertfile );
263 LDAP_FREE( lts.lt_certfile );
264 LDAP_FREE( lts.lt_keyfile );
265 LDAP_FREE( lts.lt_crlfile );
266 LDAP_FREE( lts.lt_cacertdir );
267 LDAP_FREE( lts.lt_dhfile );
268 LDAP_FREE( lts.lt_ecname );
274 * initialize the default context
277 ldap_pvt_tls_init_def_ctx( int is_server )
279 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
281 LDAP_MUTEX_LOCK( &tls_def_ctx_mutex );
282 rc = ldap_int_tls_init_ctx( lo, is_server );
283 LDAP_MUTEX_UNLOCK( &tls_def_ctx_mutex );
288 alloc_handle( void *ctx_arg, int is_server )
296 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
297 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
298 ctx = lo->ldo_tls_ctx;
301 ssl = tls_imp->ti_session_new( ctx, is_server );
303 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
310 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
312 sb->sb_trans_needs_read = 0;
313 sb->sb_trans_needs_write = 0;
315 return tls_imp->ti_session_upflags( sb, ssl, rc );
319 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
320 * a SSL_CTX * or NULL, in which case the default ctx is used.
324 * 0 - Success. Connection is ready for communication.
325 * <0 - Error. Can't create a TLS stream.
326 * >0 - Partial success.
327 * Do a select (using information from lber_pvt_sb_needs_{read,write}
332 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
334 Sockbuf *sb = conn->lconn_sb;
336 tls_session *ssl = NULL;
338 if ( HAS_TLS( sb )) {
339 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
341 struct ldapoptions *lo;
344 ctx = ld->ld_options.ldo_tls_ctx;
346 ssl = alloc_handle( ctx, 0 );
348 if ( ssl == NULL ) return -1;
351 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
352 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
354 ber_sockbuf_add_io( sb, tls_imp->ti_sbio,
355 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
357 lo = LDAP_INT_GLOBAL_OPT();
359 ctx = lo->ldo_tls_ctx;
360 ld->ld_options.ldo_tls_ctx = ctx;
363 if ( ld->ld_options.ldo_tls_connect_cb )
364 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
365 ld->ld_options.ldo_tls_connect_arg );
366 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
367 ld->ld_options.ldo_tls_connect_cb )
368 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
371 err = tls_imp->ti_session_connect( ld, ssl );
374 errno = WSAGetLastError();
380 if ( update_flags( sb, ssl, err )) {
384 msg = tls_imp->ti_session_errmsg( ssl, err, buf, sizeof(buf) );
386 if ( ld->ld_error ) {
387 LDAP_FREE( ld->ld_error );
389 ld->ld_error = LDAP_STRDUP( msg );
391 if ( ld->ld_error ) __etoa(ld->ld_error);
395 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
396 ld->ld_error ? ld->ld_error : "" ,0,0);
398 ber_sockbuf_remove_io( sb, tls_imp->ti_sbio,
399 LBER_SBIOD_LEVEL_TRANSPORT );
401 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
402 LBER_SBIOD_LEVEL_TRANSPORT );
411 * Call this to do a TLS accept on a sockbuf.
412 * Everything else is the same as with tls_connect.
415 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
418 tls_session *ssl = NULL;
420 if ( HAS_TLS( sb )) {
421 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
423 ssl = alloc_handle( ctx_arg, 1 );
424 if ( ssl == NULL ) return -1;
427 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
428 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
430 ber_sockbuf_add_io( sb, tls_imp->ti_sbio,
431 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
434 err = tls_imp->ti_session_accept( ssl );
437 errno = WSAGetLastError();
442 if ( update_flags( sb, ssl, err )) return 1;
444 if ( DebugTest( LDAP_DEBUG_ANY ) ) {
446 msg = tls_imp->ti_session_errmsg( ssl, err, buf, sizeof(buf) );
447 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
448 msg ? msg : "(unknown)", 0, 0 );
451 ber_sockbuf_remove_io( sb, tls_imp->ti_sbio,
452 LBER_SBIOD_LEVEL_TRANSPORT );
454 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
455 LBER_SBIOD_LEVEL_TRANSPORT );
463 ldap_pvt_tls_inplace ( Sockbuf *sb )
465 return HAS_TLS( sb ) ? 1 : 0;
469 ldap_tls_inplace( LDAP *ld )
473 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
474 sb = ld->ld_defconn->lconn_sb;
476 } else if ( ld->ld_sb ) {
483 return ldap_pvt_tls_inplace( sb );
487 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
488 LDAPDN_rewrite_dummy *func, unsigned flags )
490 tls_session *session = s;
494 rc = tls_imp->ti_session_peer_dn( session, &bvdn );
497 rc = ldap_X509dn2bv( &bvdn, dn,
498 (LDAPDN_rewrite_func *)func, flags);
503 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
505 tls_session *session = s;
507 return tls_imp->ti_session_chkhost( ld, session, name_in );
511 ldap_pvt_tls_config( LDAP *ld, int option, const char *arg )
516 case LDAP_OPT_X_TLS_CACERTFILE:
517 case LDAP_OPT_X_TLS_CACERTDIR:
518 case LDAP_OPT_X_TLS_CERTFILE:
519 case LDAP_OPT_X_TLS_KEYFILE:
520 case LDAP_OPT_X_TLS_RANDOM_FILE:
521 case LDAP_OPT_X_TLS_CIPHER_SUITE:
522 case LDAP_OPT_X_TLS_DHFILE:
523 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
524 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
526 case LDAP_OPT_X_TLS_REQUIRE_CERT:
529 if ( strcasecmp( arg, "never" ) == 0 ) {
530 i = LDAP_OPT_X_TLS_NEVER ;
532 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
533 i = LDAP_OPT_X_TLS_DEMAND ;
535 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
536 i = LDAP_OPT_X_TLS_ALLOW ;
538 } else if ( strcasecmp( arg, "try" ) == 0 ) {
539 i = LDAP_OPT_X_TLS_TRY ;
541 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
542 ( strcasecmp( arg, "on" ) == 0 ) ||
543 ( strcasecmp( arg, "yes" ) == 0) ||
544 ( strcasecmp( arg, "true" ) == 0 ) )
546 i = LDAP_OPT_X_TLS_HARD ;
550 return ldap_pvt_tls_set_option( ld, option, &i );
553 case LDAP_OPT_X_TLS_PROTOCOL_MIN: {
556 l = strtol( arg, &next, 10 );
557 if ( l < 0 || l > 0xff || next == arg ||
558 ( *next != '\0' && *next != '.' ) )
563 l = strtol( arg, &next, 10 );
564 if ( l < 0 || l > 0xff || next == arg || *next != '\0' )
568 return ldap_pvt_tls_set_option( ld, option, &i );
570 #ifdef HAVE_OPENSSL_CRL
571 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
573 if ( strcasecmp( arg, "none" ) == 0 ) {
574 i = LDAP_OPT_X_TLS_CRL_NONE ;
575 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
576 i = LDAP_OPT_X_TLS_CRL_PEER ;
577 } else if ( strcasecmp( arg, "all" ) == 0 ) {
578 i = LDAP_OPT_X_TLS_CRL_ALL ;
581 return ldap_pvt_tls_set_option( ld, option, &i );
590 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
592 struct ldapoptions *lo;
594 if( option == LDAP_OPT_X_TLS_PACKAGE ) {
595 *(char **)arg = LDAP_STRDUP( tls_imp->ti_name );
600 assert( LDAP_VALID( ld ) );
602 if( !LDAP_VALID( ld ) ) {
603 return LDAP_OPT_ERROR;
606 lo = &ld->ld_options;
609 /* Get pointer to global option structure */
610 lo = LDAP_INT_GLOBAL_OPT();
612 return LDAP_NO_MEMORY;
618 *(int *)arg = lo->ldo_tls_mode;
620 case LDAP_OPT_X_TLS_CTX:
621 *(void **)arg = lo->ldo_tls_ctx;
622 if ( lo->ldo_tls_ctx ) {
623 tls_ctx_ref( lo->ldo_tls_ctx );
626 case LDAP_OPT_X_TLS_CACERTFILE:
627 *(char **)arg = lo->ldo_tls_cacertfile ?
628 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
630 case LDAP_OPT_X_TLS_CACERTDIR:
631 *(char **)arg = lo->ldo_tls_cacertdir ?
632 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
634 case LDAP_OPT_X_TLS_CERTFILE:
635 *(char **)arg = lo->ldo_tls_certfile ?
636 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
638 case LDAP_OPT_X_TLS_KEYFILE:
639 *(char **)arg = lo->ldo_tls_keyfile ?
640 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
642 case LDAP_OPT_X_TLS_DHFILE:
643 *(char **)arg = lo->ldo_tls_dhfile ?
644 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
646 case LDAP_OPT_X_TLS_ECNAME:
647 *(char **)arg = lo->ldo_tls_ecname ?
648 LDAP_STRDUP( lo->ldo_tls_ecname ) : NULL;
650 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
651 *(char **)arg = lo->ldo_tls_crlfile ?
652 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
654 case LDAP_OPT_X_TLS_REQUIRE_CERT:
655 *(int *)arg = lo->ldo_tls_require_cert;
657 #ifdef HAVE_OPENSSL_CRL
658 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
659 *(int *)arg = lo->ldo_tls_crlcheck;
662 case LDAP_OPT_X_TLS_CIPHER_SUITE:
663 *(char **)arg = lo->ldo_tls_ciphersuite ?
664 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
666 case LDAP_OPT_X_TLS_PROTOCOL_MIN:
667 *(int *)arg = lo->ldo_tls_protocol_min;
669 case LDAP_OPT_X_TLS_RANDOM_FILE:
670 *(char **)arg = lo->ldo_tls_randfile ?
671 LDAP_STRDUP( lo->ldo_tls_randfile ) : NULL;
673 case LDAP_OPT_X_TLS_SSL_CTX: {
676 LDAPConn *conn = ld->ld_defconn;
677 if ( conn != NULL ) {
678 Sockbuf *sb = conn->lconn_sb;
679 retval = ldap_pvt_tls_sb_ctx( sb );
682 *(void **)arg = retval;
685 case LDAP_OPT_X_TLS_CONNECT_CB:
686 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
688 case LDAP_OPT_X_TLS_CONNECT_ARG:
689 *(void **)arg = lo->ldo_tls_connect_arg;
698 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
700 struct ldapoptions *lo;
703 assert( LDAP_VALID( ld ) );
705 if( !LDAP_VALID( ld ) ) {
706 return LDAP_OPT_ERROR;
709 lo = &ld->ld_options;
712 /* Get pointer to global option structure */
713 lo = LDAP_INT_GLOBAL_OPT();
715 return LDAP_NO_MEMORY;
721 if ( !arg ) return -1;
723 switch( *(int *) arg ) {
724 case LDAP_OPT_X_TLS_NEVER:
725 case LDAP_OPT_X_TLS_DEMAND:
726 case LDAP_OPT_X_TLS_ALLOW:
727 case LDAP_OPT_X_TLS_TRY:
728 case LDAP_OPT_X_TLS_HARD:
730 lo->ldo_tls_mode = *(int *)arg;
737 case LDAP_OPT_X_TLS_CTX:
738 if ( lo->ldo_tls_ctx )
739 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
740 lo->ldo_tls_ctx = arg;
741 tls_ctx_ref( lo->ldo_tls_ctx );
743 case LDAP_OPT_X_TLS_CONNECT_CB:
744 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
746 case LDAP_OPT_X_TLS_CONNECT_ARG:
747 lo->ldo_tls_connect_arg = arg;
749 case LDAP_OPT_X_TLS_CACERTFILE:
750 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
751 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
753 case LDAP_OPT_X_TLS_CACERTDIR:
754 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
755 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
757 case LDAP_OPT_X_TLS_CERTFILE:
758 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
759 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
761 case LDAP_OPT_X_TLS_KEYFILE:
762 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
763 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
765 case LDAP_OPT_X_TLS_DHFILE:
766 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
767 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
769 case LDAP_OPT_X_TLS_ECNAME:
770 if ( lo->ldo_tls_ecname ) LDAP_FREE( lo->ldo_tls_ecname );
771 lo->ldo_tls_ecname = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
773 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
774 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
775 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
777 case LDAP_OPT_X_TLS_REQUIRE_CERT:
778 if ( !arg ) return -1;
779 switch( *(int *) arg ) {
780 case LDAP_OPT_X_TLS_NEVER:
781 case LDAP_OPT_X_TLS_DEMAND:
782 case LDAP_OPT_X_TLS_ALLOW:
783 case LDAP_OPT_X_TLS_TRY:
784 case LDAP_OPT_X_TLS_HARD:
785 lo->ldo_tls_require_cert = * (int *) arg;
789 #ifdef HAVE_OPENSSL_CRL
790 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
791 if ( !arg ) return -1;
792 switch( *(int *) arg ) {
793 case LDAP_OPT_X_TLS_CRL_NONE:
794 case LDAP_OPT_X_TLS_CRL_PEER:
795 case LDAP_OPT_X_TLS_CRL_ALL:
796 lo->ldo_tls_crlcheck = * (int *) arg;
801 case LDAP_OPT_X_TLS_CIPHER_SUITE:
802 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
803 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
806 case LDAP_OPT_X_TLS_PROTOCOL_MIN:
807 if ( !arg ) return -1;
808 lo->ldo_tls_protocol_min = *(int *)arg;
810 case LDAP_OPT_X_TLS_RANDOM_FILE:
813 if ( lo->ldo_tls_randfile ) LDAP_FREE (lo->ldo_tls_randfile );
814 lo->ldo_tls_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
816 case LDAP_OPT_X_TLS_NEWCTX:
817 if ( !arg ) return -1;
818 if ( lo->ldo_tls_ctx )
819 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
820 lo->ldo_tls_ctx = NULL;
821 return ldap_int_tls_init_ctx( lo, *(int *)arg );
829 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
835 #ifdef LDAP_USE_NON_BLOCKING_TLS
836 struct timeval start_time_tv, tv, tv0;
837 ber_socket_t sd = AC_SOCKET_ERROR;
838 #endif /* LDAP_USE_NON_BLOCKING_TLS */
841 return LDAP_PARAM_ERROR;
845 host = srv->lud_host;
847 host = conn->lconn_server->lud_host;
850 /* avoid NULL host */
855 (void) tls_init( tls_imp );
857 #ifdef LDAP_USE_NON_BLOCKING_TLS
859 * Use non-blocking io during SSL Handshake when a timeout is configured
861 if ( ld->ld_options.ldo_tm_net.tv_sec >= 0 ) {
862 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_SET_NONBLOCK, sb );
863 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
864 tv = ld->ld_options.ldo_tm_net;
866 #ifdef HAVE_GETTIMEOFDAY
867 gettimeofday( &start_time_tv, NULL );
868 #else /* ! HAVE_GETTIMEOFDAY */
869 time( &start_time_tv.tv_sec );
870 start_time_tv.tv_usec = 0;
871 #endif /* ! HAVE_GETTIMEOFDAY */
874 #endif /* LDAP_USE_NON_BLOCKING_TLS */
876 ld->ld_errno = LDAP_SUCCESS;
877 ret = ldap_int_tls_connect( ld, conn );
879 #ifdef LDAP_USE_NON_BLOCKING_TLS
880 while ( ret > 0 ) { /* this should only happen for non-blocking io */
883 if ( sb->sb_trans_needs_read ) {
885 } else if ( sb->sb_trans_needs_write ) {
888 Debug( LDAP_DEBUG_TRACE, "ldap_int_tls_start: ldap_int_tls_connect needs %s\n",
889 wr ? "write": "read", 0, 0);
891 ret = ldap_int_poll( ld, sd, &tv, wr);
893 ld->ld_errno = LDAP_TIMEOUT;
896 /* ldap_int_poll called ldap_pvt_ndelay_off */
897 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_SET_NONBLOCK, sb );
898 ret = ldap_int_tls_connect( ld, conn );
899 if ( ret > 0 ) { /* need to call tls_connect once more */
900 struct timeval curr_time_tv, delta_tv;
902 /* This is mostly copied from result.c:wait4msg(), should
903 * probably be moved into a separate function */
904 #ifdef HAVE_GETTIMEOFDAY
905 gettimeofday( &curr_time_tv, NULL );
906 #else /* ! HAVE_GETTIMEOFDAY */
907 time( &curr_time_tv.tv_sec );
908 curr_time_tv.tv_usec = 0;
909 #endif /* ! HAVE_GETTIMEOFDAY */
911 /* delta = curr - start */
912 delta_tv.tv_sec = curr_time_tv.tv_sec - start_time_tv.tv_sec;
913 delta_tv.tv_usec = curr_time_tv.tv_usec - start_time_tv.tv_usec;
914 if ( delta_tv.tv_usec < 0 ) {
916 delta_tv.tv_usec += 1000000;
920 if ( ( tv0.tv_sec < delta_tv.tv_sec ) ||
921 ( ( tv0.tv_sec == delta_tv.tv_sec ) &&
922 ( tv0.tv_usec < delta_tv.tv_usec ) ) )
925 ld->ld_errno = LDAP_TIMEOUT;
928 /* timeout -= delta_time */
929 tv0.tv_sec -= delta_tv.tv_sec;
930 tv0.tv_usec -= delta_tv.tv_usec;
931 if ( tv0.tv_usec < 0 ) {
933 tv0.tv_usec += 1000000;
935 start_time_tv.tv_sec = curr_time_tv.tv_sec;
936 start_time_tv.tv_usec = curr_time_tv.tv_usec;
939 Debug( LDAP_DEBUG_TRACE, "ldap_int_tls_start: ld %p %ld s %ld us to go\n",
940 (void *)ld, (long) tv.tv_sec, (long) tv.tv_usec );
944 if ( ld->ld_options.ldo_tm_net.tv_sec >= 0 ) {
945 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_SET_NONBLOCK, NULL );
947 #endif /* LDAP_USE_NON_BLOCKING_TLS */
950 if ( ld->ld_errno == LDAP_SUCCESS )
951 ld->ld_errno = LDAP_CONNECT_ERROR;
952 return (ld->ld_errno);
955 ssl = ldap_pvt_tls_sb_ctx( sb );
956 assert( ssl != NULL );
959 * compare host with name(s) in certificate
961 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER &&
962 ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW) {
963 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
964 if (ld->ld_errno != LDAP_SUCCESS) {
973 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
977 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
982 ldap_pvt_tls_get_strength( void *s )
984 tls_session *session = s;
986 return tls_imp->ti_session_strength( session );
990 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
992 tls_session *session = s;
993 struct berval der_dn;
996 rc = tls_imp->ti_session_my_dn( session, &der_dn );
997 if ( rc == LDAP_SUCCESS )
998 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
1003 ldap_pvt_tls_get_unique( void *s, struct berval *buf, int is_server )
1005 tls_session *session = s;
1006 return tls_imp->ti_session_unique( session, buf, is_server );
1008 #endif /* HAVE_TLS */
1011 ldap_start_tls( LDAP *ld,
1012 LDAPControl **serverctrls,
1013 LDAPControl **clientctrls,
1016 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1017 NULL, serverctrls, clientctrls, msgidp );
1021 ldap_install_tls( LDAP *ld )
1024 return LDAP_NOT_SUPPORTED;
1026 if ( ldap_tls_inplace( ld ) ) {
1027 return LDAP_LOCAL_ERROR;
1030 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1035 ldap_start_tls_s ( LDAP *ld,
1036 LDAPControl **serverctrls,
1037 LDAPControl **clientctrls )
1040 return LDAP_NOT_SUPPORTED;
1043 char *rspoid = NULL;
1044 struct berval *rspdata = NULL;
1046 /* XXYYZ: this initiates operation only on default connection! */
1048 if ( ldap_tls_inplace( ld ) ) {
1049 return LDAP_LOCAL_ERROR;
1052 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1053 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1055 if ( rspoid != NULL ) {
1059 if ( rspdata != NULL ) {
1060 ber_bvfree( rspdata );
1063 if ( rc == LDAP_SUCCESS ) {
1064 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1071 /* These tags probably all belong in lber.h, but they're
1072 * not normally encountered when processing LDAP, so maybe
1073 * they belong somewhere else instead.
1076 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
1078 /* Tags for string types used in a DirectoryString.
1080 * Note that IA5string is not one of the defined choices for
1081 * DirectoryString in X.520, but it gets used for email AVAs.
1083 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
1084 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
1085 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
1086 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
1087 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
1088 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
1091 find_oid( struct berval *oid )
1095 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
1096 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
1097 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
1103 /* Converts BER Bitstring value to LDAP BitString value (RFC4517)
1108 * berValue and ldapValue should not be NULL
1111 #define BITS_PER_BYTE 8
1112 #define SQUOTE_LENGTH 1
1113 #define B_CHAR_LENGTH 1
1114 #define STR_OVERHEAD (2*SQUOTE_LENGTH + B_CHAR_LENGTH)
1117 der_to_ldap_BitString (struct berval *berValue,
1118 struct berval *ldapValue)
1120 ber_len_t bitPadding=0;
1121 ber_len_t bits, maxBits;
1124 ber_len_t bitLength;
1126 unsigned char* valPtr;
1128 ldapValue->bv_len=0;
1129 ldapValue->bv_val=NULL;
1131 /* Gets padding and points to binary data */
1132 valLen=berValue->bv_len;
1133 valPtr=(unsigned char*)berValue->bv_val;
1135 bitPadding=(ber_len_t)(valPtr[0]);
1139 /* If Block is non DER encoding fixes to DER encoding */
1140 if (bitPadding >= BITS_PER_BYTE) {
1141 if (valLen*BITS_PER_BYTE > bitPadding ) {
1142 valLen-=(bitPadding/BITS_PER_BYTE);
1143 bitPadding%=BITS_PER_BYTE;
1149 /* Just in case bad encoding */
1150 if (valLen*BITS_PER_BYTE < bitPadding ) {
1155 /* Gets buffer to hold RFC4517 Bit String format */
1156 bitLength=valLen*BITS_PER_BYTE-bitPadding;
1157 tmpStr=LDAP_MALLOC(bitLength + STR_OVERHEAD + 1);
1160 return LDAP_NO_MEMORY;
1162 ldapValue->bv_val=tmpStr;
1163 ldapValue->bv_len=bitLength + STR_OVERHEAD;
1165 /* Formatting in '*binary-digit'B format */
1166 maxBits=BITS_PER_BYTE;
1171 maxBits-=bitPadding;
1172 for (bits=0; bits<maxBits; bits++) {
1187 return LDAP_SUCCESS;
1190 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
1191 * x509_name must be raw DER. If func is non-NULL, the
1192 * constructed DN will use numeric OIDs to identify attributeTypes,
1193 * and the func() will be invoked to rewrite the DN with the given
1196 * Otherwise the DN will use shortNames from a hardcoded table.
1199 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
1204 LDAPAVA *newAVA, *baseAVA;
1205 BerElementBuffer berbuf;
1206 BerElement *ber = (BerElement *)&berbuf;
1207 char oids[8192], *oidptr = oids, *oidbuf = NULL;
1209 char *dn_end, *rdn_end;
1210 int i, navas, nrdns, rc = LDAP_SUCCESS;
1211 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
1217 struct berval Oid, Val, oid2, *in = x509_name;
1219 assert( bv != NULL );
1227 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
1228 * An AVA is a SEQUENCE of attr and value.
1229 * Count the number of AVAs and RDNs
1231 ber_init2( ber, in, LBER_USE_DER );
1232 tag = ber_peek_tag( ber, &len );
1233 if ( tag != LBER_SEQUENCE )
1234 return LDAP_DECODING_ERROR;
1236 for ( tag = ber_first_element( ber, &len, &dn_end );
1238 tag = ber_next_element( ber, &len, dn_end )) {
1240 for ( tag = ber_first_element( ber, &len, &rdn_end );
1241 tag == LBER_SEQUENCE;
1242 tag = ber_next_element( ber, &len, rdn_end )) {
1243 tag = ber_skip_tag( ber, &len );
1244 ber_skip_data( ber, len );
1249 /* Allocate the DN/RDN/AVA stuff as a single block */
1250 dnsize = sizeof(LDAPRDN) * (nrdns+1);
1251 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
1252 dnsize += sizeof(LDAPAVA) * navas;
1253 if (dnsize > sizeof(ptrs)) {
1254 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
1255 if ( newDN == NULL )
1256 return LDAP_NO_MEMORY;
1258 newDN = (LDAPDN)(char *)ptrs;
1261 newDN[nrdns] = NULL;
1262 newRDN = (LDAPRDN)(newDN + nrdns+1);
1263 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
1266 /* Rewind and start extracting */
1269 tag = ber_first_element( ber, &len, &dn_end );
1270 for ( i = nrdns - 1; i >= 0; i-- ) {
1273 for ( tag = ber_first_element( ber, &len, &rdn_end );
1274 tag == LBER_SEQUENCE;
1275 tag = ber_next_element( ber, &len, rdn_end )) {
1278 tag = ber_skip_tag( ber, &len );
1279 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
1280 if ( tag != LBER_TAG_OID ) {
1281 rc = LDAP_DECODING_ERROR;
1285 oid2.bv_val = oidptr;
1286 oid2.bv_len = oidrem;
1287 if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) {
1288 rc = LDAP_DECODING_ERROR;
1291 oidname = find_oid( &oid2 );
1293 newAVA->la_attr = oid2;
1294 oidptr += oid2.bv_len + 1;
1295 oidrem -= oid2.bv_len + 1;
1297 /* Running out of OID buffer space? */
1299 if ( oidsize == 0 ) {
1300 oidsize = sizeof(oids) * 2;
1302 oidbuf = LDAP_MALLOC( oidsize );
1303 if ( oidbuf == NULL ) goto nomem;
1307 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
1308 if ( oidbuf == NULL ) goto nomem;
1309 /* Buffer moved! Fix AVA pointers */
1310 if ( old != oidbuf ) {
1312 long dif = oidbuf - old;
1314 for (a=baseAVA; a<=newAVA; a++){
1315 if (a->la_attr.bv_val >= old &&
1316 a->la_attr.bv_val <= (old + oidsize))
1317 a->la_attr.bv_val += dif;
1320 oidptr = oidbuf + oidsize - oidrem;
1327 newAVA->la_attr = oidname->oid;
1329 newAVA->la_attr = oidname->name;
1332 newAVA->la_private = NULL;
1333 newAVA->la_flags = LDAP_AVA_STRING;
1334 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
1336 case LBER_TAG_UNIVERSAL:
1337 /* This uses 32-bit ISO 10646-1 */
1338 csize = 4; goto to_utf8;
1340 /* This uses 16-bit ISO 10646-1 */
1341 csize = 2; goto to_utf8;
1342 case LBER_TAG_TELETEX:
1343 /* This uses 8-bit, assume ISO 8859-1 */
1345 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
1346 newAVA->la_flags |= LDAP_AVA_NONPRINTABLE;
1348 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
1349 if (rc != LDAP_SUCCESS) goto nomem;
1352 newAVA->la_flags |= LDAP_AVA_NONPRINTABLE;
1353 /* This is already in UTF-8 encoding */
1355 case LBER_TAG_PRINTABLE:
1356 /* These are always 7-bit strings */
1357 newAVA->la_value = Val;
1359 case LBER_BITSTRING:
1360 /* X.690 bitString value converted to RFC4517 Bit String */
1361 rc = der_to_ldap_BitString( &Val, &newAVA->la_value );
1364 /* Not a string type at all */
1365 newAVA->la_flags = 0;
1366 newAVA->la_value = Val;
1372 tag = ber_next_element( ber, &len, dn_end );
1376 rc = func( newDN, flags, NULL );
1377 if ( rc != LDAP_SUCCESS )
1381 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
1384 for (;baseAVA < newAVA; baseAVA++) {
1385 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
1386 LDAP_FREE( baseAVA->la_attr.bv_val );
1387 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
1388 LDAP_FREE( baseAVA->la_value.bv_val );
1392 LDAP_FREE( oidbuf );
1393 if ( newDN != (LDAPDN)(char *) ptrs )