1 /* tls.c - Handle tls/ssl. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2012 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 )
46 /* RFC2459 minimum required set of supported attribute types
49 typedef struct oid_name {
54 static oid_name oids[] = {
55 { BER_BVC("2.5.4.3"), BER_BVC("cn") },
56 { BER_BVC("2.5.4.4"), BER_BVC("sn") },
57 { BER_BVC("2.5.4.6"), BER_BVC("c") },
58 { BER_BVC("2.5.4.7"), BER_BVC("l") },
59 { BER_BVC("2.5.4.8"), BER_BVC("st") },
60 { BER_BVC("2.5.4.10"), BER_BVC("o") },
61 { BER_BVC("2.5.4.11"), BER_BVC("ou") },
62 { BER_BVC("2.5.4.12"), BER_BVC("title") },
63 { BER_BVC("2.5.4.41"), BER_BVC("name") },
64 { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
65 { BER_BVC("2.5.4.43"), BER_BVC("initials") },
66 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
67 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
68 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
69 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
70 { BER_BVNULL, BER_BVNULL }
76 ldap_pvt_tls_ctx_free ( void *c )
79 tls_imp->ti_ctx_free( c );
83 tls_ctx_ref( tls_ctx *ctx )
87 tls_imp->ti_ctx_ref( ctx );
92 * an extra mutex for the default ctx.
94 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
98 ldap_int_tls_destroy( struct ldapoptions *lo )
100 if ( lo->ldo_tls_ctx ) {
101 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
102 lo->ldo_tls_ctx = NULL;
105 if ( lo->ldo_tls_certfile ) {
106 LDAP_FREE( lo->ldo_tls_certfile );
107 lo->ldo_tls_certfile = NULL;
109 if ( lo->ldo_tls_keyfile ) {
110 LDAP_FREE( lo->ldo_tls_keyfile );
111 lo->ldo_tls_keyfile = NULL;
113 if ( lo->ldo_tls_dhfile ) {
114 LDAP_FREE( lo->ldo_tls_dhfile );
115 lo->ldo_tls_dhfile = NULL;
117 if ( lo->ldo_tls_cacertfile ) {
118 LDAP_FREE( lo->ldo_tls_cacertfile );
119 lo->ldo_tls_cacertfile = NULL;
121 if ( lo->ldo_tls_cacertdir ) {
122 LDAP_FREE( lo->ldo_tls_cacertdir );
123 lo->ldo_tls_cacertdir = NULL;
125 if ( lo->ldo_tls_ciphersuite ) {
126 LDAP_FREE( lo->ldo_tls_ciphersuite );
127 lo->ldo_tls_ciphersuite = NULL;
129 if ( lo->ldo_tls_crlfile ) {
130 LDAP_FREE( lo->ldo_tls_crlfile );
131 lo->ldo_tls_crlfile = NULL;
136 * Tear down the TLS subsystem. Should only be called once.
139 ldap_pvt_tls_destroy( void )
141 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
143 ldap_int_tls_destroy( lo );
145 tls_imp->ti_tls_destroy();
149 * Initialize a particular TLS implementation.
150 * Called once per implementation.
153 tls_init(tls_impl *impl )
155 static int tls_initialized = 0;
157 if ( !tls_initialized++ ) {
158 #ifdef LDAP_R_COMPILE
159 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
163 if ( impl->ti_inited++ ) return 0;
165 #ifdef LDAP_R_COMPILE
168 return impl->ti_tls_init();
172 * Initialize TLS subsystem. Called once per implementation.
175 ldap_pvt_tls_init( void )
177 return tls_init( tls_imp );
181 * initialize a new TLS context
184 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
187 tls_impl *ti = tls_imp;
188 struct ldaptls lts = lo->ldo_tls_info;
190 if ( lo->ldo_tls_ctx )
195 if ( is_server && !lts.lt_certfile && !lts.lt_keyfile &&
196 !lts.lt_cacertfile && !lts.lt_cacertdir ) {
197 /* minimum configuration not provided */
198 return LDAP_NOT_SUPPORTED;
202 /* This ASCII/EBCDIC handling is a real pain! */
203 if ( lts.lt_ciphersuite ) {
204 lts.lt_ciphersuite = LDAP_STRDUP( lts.lt_ciphersuite );
205 __atoe( lts.lt_ciphersuite );
207 if ( lts.lt_cacertfile ) {
208 lts.lt_cacertfile = LDAP_STRDUP( lts.lt_cacertfile );
209 __atoe( lts.lt_cacertfile );
211 if ( lts.lt_certfile ) {
212 lts.lt_certfile = LDAP_STRDUP( lts.lt_certfile );
213 __atoe( lts.lt_certfile );
215 if ( lts.lt_keyfile ) {
216 lts.lt_keyfile = LDAP_STRDUP( lts.lt_keyfile );
217 __atoe( lts.lt_keyfile );
219 if ( lts.lt_crlfile ) {
220 lts.lt_crlfile = LDAP_STRDUP( lts.lt_crlfile );
221 __atoe( lts.lt_crlfile );
223 if ( lts.lt_cacertdir ) {
224 lts.lt_cacertdir = LDAP_STRDUP( lts.lt_cacertdir );
225 __atoe( lts.lt_cacertdir );
227 if ( lts.lt_dhfile ) {
228 lts.lt_dhfile = LDAP_STRDUP( lts.lt_dhfile );
229 __atoe( lts.lt_dhfile );
232 lo->ldo_tls_ctx = ti->ti_ctx_new( lo );
233 if ( lo->ldo_tls_ctx == NULL ) {
234 Debug( LDAP_DEBUG_ANY,
235 "TLS: could not allocate default ctx.\n",
241 rc = ti->ti_ctx_init( lo, <s, is_server );
244 if ( rc < 0 && lo->ldo_tls_ctx != NULL ) {
245 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
246 lo->ldo_tls_ctx = NULL;
249 LDAP_FREE( lts.lt_ciphersuite );
250 LDAP_FREE( lts.lt_cacertfile );
251 LDAP_FREE( lts.lt_certfile );
252 LDAP_FREE( lts.lt_keyfile );
253 LDAP_FREE( lts.lt_crlfile );
254 LDAP_FREE( lts.lt_cacertdir );
255 LDAP_FREE( lts.lt_dhfile );
261 * initialize the default context
264 ldap_pvt_tls_init_def_ctx( int is_server )
266 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
268 LDAP_MUTEX_LOCK( &tls_def_ctx_mutex );
269 rc = ldap_int_tls_init_ctx( lo, is_server );
270 LDAP_MUTEX_UNLOCK( &tls_def_ctx_mutex );
275 alloc_handle( void *ctx_arg, int is_server )
283 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
284 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
285 ctx = lo->ldo_tls_ctx;
288 ssl = tls_imp->ti_session_new( ctx, is_server );
290 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
297 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
299 sb->sb_trans_needs_read = 0;
300 sb->sb_trans_needs_write = 0;
302 return tls_imp->ti_session_upflags( sb, ssl, rc );
306 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
307 * a SSL_CTX * or NULL, in which case the default ctx is used.
311 * 0 - Success. Connection is ready for communication.
312 * <0 - Error. Can't create a TLS stream.
313 * >0 - Partial success.
314 * Do a select (using information from lber_pvt_sb_needs_{read,write}
319 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
321 Sockbuf *sb = conn->lconn_sb;
323 tls_session *ssl = NULL;
325 if ( HAS_TLS( sb )) {
326 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
328 struct ldapoptions *lo;
331 ctx = ld->ld_options.ldo_tls_ctx;
333 ssl = alloc_handle( ctx, 0 );
335 if ( ssl == NULL ) return -1;
338 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
339 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
341 ber_sockbuf_add_io( sb, tls_imp->ti_sbio,
342 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
344 lo = LDAP_INT_GLOBAL_OPT();
346 ctx = lo->ldo_tls_ctx;
347 ld->ld_options.ldo_tls_ctx = ctx;
350 if ( ld->ld_options.ldo_tls_connect_cb )
351 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
352 ld->ld_options.ldo_tls_connect_arg );
353 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
354 ld->ld_options.ldo_tls_connect_cb )
355 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
358 err = tls_imp->ti_session_connect( ld, ssl );
361 errno = WSAGetLastError();
367 if ( update_flags( sb, ssl, err )) {
371 msg = tls_imp->ti_session_errmsg( ssl, err, buf, sizeof(buf) );
373 if ( ld->ld_error ) {
374 LDAP_FREE( ld->ld_error );
376 ld->ld_error = LDAP_STRDUP( msg );
378 if ( ld->ld_error ) __etoa(ld->ld_error);
382 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
383 ld->ld_error ? ld->ld_error : "" ,0,0);
385 ber_sockbuf_remove_io( sb, tls_imp->ti_sbio,
386 LBER_SBIOD_LEVEL_TRANSPORT );
388 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
389 LBER_SBIOD_LEVEL_TRANSPORT );
398 * Call this to do a TLS accept on a sockbuf.
399 * Everything else is the same as with tls_connect.
402 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
405 tls_session *ssl = NULL;
407 if ( HAS_TLS( sb )) {
408 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
410 ssl = alloc_handle( ctx_arg, 1 );
411 if ( ssl == NULL ) return -1;
414 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
415 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
417 ber_sockbuf_add_io( sb, tls_imp->ti_sbio,
418 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
421 err = tls_imp->ti_session_accept( ssl );
424 errno = WSAGetLastError();
429 if ( update_flags( sb, ssl, err )) return 1;
431 if ( DebugTest( LDAP_DEBUG_ANY ) ) {
433 msg = tls_imp->ti_session_errmsg( ssl, err, buf, sizeof(buf) );
434 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
435 msg ? msg : "(unknown)", 0, 0 );
438 ber_sockbuf_remove_io( sb, tls_imp->ti_sbio,
439 LBER_SBIOD_LEVEL_TRANSPORT );
441 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
442 LBER_SBIOD_LEVEL_TRANSPORT );
450 ldap_pvt_tls_inplace ( Sockbuf *sb )
452 return HAS_TLS( sb ) ? 1 : 0;
456 ldap_tls_inplace( LDAP *ld )
460 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
461 sb = ld->ld_defconn->lconn_sb;
463 } else if ( ld->ld_sb ) {
470 return ldap_pvt_tls_inplace( sb );
474 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
475 LDAPDN_rewrite_dummy *func, unsigned flags )
477 tls_session *session = s;
481 rc = tls_imp->ti_session_peer_dn( session, &bvdn );
484 rc = ldap_X509dn2bv( &bvdn, dn,
485 (LDAPDN_rewrite_func *)func, flags);
490 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
492 tls_session *session = s;
494 return tls_imp->ti_session_chkhost( ld, session, name_in );
498 ldap_pvt_tls_config( LDAP *ld, int option, const char *arg )
503 case LDAP_OPT_X_TLS_CACERTFILE:
504 case LDAP_OPT_X_TLS_CACERTDIR:
505 case LDAP_OPT_X_TLS_CERTFILE:
506 case LDAP_OPT_X_TLS_KEYFILE:
507 case LDAP_OPT_X_TLS_RANDOM_FILE:
508 case LDAP_OPT_X_TLS_CIPHER_SUITE:
509 case LDAP_OPT_X_TLS_DHFILE:
510 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
511 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
513 case LDAP_OPT_X_TLS_REQUIRE_CERT:
516 if ( strcasecmp( arg, "never" ) == 0 ) {
517 i = LDAP_OPT_X_TLS_NEVER ;
519 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
520 i = LDAP_OPT_X_TLS_DEMAND ;
522 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
523 i = LDAP_OPT_X_TLS_ALLOW ;
525 } else if ( strcasecmp( arg, "try" ) == 0 ) {
526 i = LDAP_OPT_X_TLS_TRY ;
528 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
529 ( strcasecmp( arg, "on" ) == 0 ) ||
530 ( strcasecmp( arg, "yes" ) == 0) ||
531 ( strcasecmp( arg, "true" ) == 0 ) )
533 i = LDAP_OPT_X_TLS_HARD ;
537 return ldap_pvt_tls_set_option( ld, option, &i );
540 case LDAP_OPT_X_TLS_PROTOCOL_MIN: {
543 l = strtol( arg, &next, 10 );
544 if ( l < 0 || l > 0xff || next == arg ||
545 ( *next != '\0' && *next != '.' ) )
550 l = strtol( arg, &next, 10 );
551 if ( l < 0 || l > 0xff || next == arg || *next != '\0' )
555 return ldap_pvt_tls_set_option( ld, option, &i );
557 #ifdef HAVE_OPENSSL_CRL
558 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
560 if ( strcasecmp( arg, "none" ) == 0 ) {
561 i = LDAP_OPT_X_TLS_CRL_NONE ;
562 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
563 i = LDAP_OPT_X_TLS_CRL_PEER ;
564 } else if ( strcasecmp( arg, "all" ) == 0 ) {
565 i = LDAP_OPT_X_TLS_CRL_ALL ;
568 return ldap_pvt_tls_set_option( ld, option, &i );
577 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
579 struct ldapoptions *lo;
581 if( option == LDAP_OPT_X_TLS_PACKAGE ) {
582 *(char **)arg = LDAP_STRDUP( tls_imp->ti_name );
587 assert( LDAP_VALID( ld ) );
589 if( !LDAP_VALID( ld ) ) {
590 return LDAP_OPT_ERROR;
593 lo = &ld->ld_options;
596 /* Get pointer to global option structure */
597 lo = LDAP_INT_GLOBAL_OPT();
599 return LDAP_NO_MEMORY;
605 *(int *)arg = lo->ldo_tls_mode;
607 case LDAP_OPT_X_TLS_CTX:
608 *(void **)arg = lo->ldo_tls_ctx;
609 if ( lo->ldo_tls_ctx ) {
610 tls_ctx_ref( lo->ldo_tls_ctx );
613 case LDAP_OPT_X_TLS_CACERTFILE:
614 *(char **)arg = lo->ldo_tls_cacertfile ?
615 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
617 case LDAP_OPT_X_TLS_CACERTDIR:
618 *(char **)arg = lo->ldo_tls_cacertdir ?
619 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
621 case LDAP_OPT_X_TLS_CERTFILE:
622 *(char **)arg = lo->ldo_tls_certfile ?
623 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
625 case LDAP_OPT_X_TLS_KEYFILE:
626 *(char **)arg = lo->ldo_tls_keyfile ?
627 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
629 case LDAP_OPT_X_TLS_DHFILE:
630 *(char **)arg = lo->ldo_tls_dhfile ?
631 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
633 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
634 *(char **)arg = lo->ldo_tls_crlfile ?
635 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
637 case LDAP_OPT_X_TLS_REQUIRE_CERT:
638 *(int *)arg = lo->ldo_tls_require_cert;
640 #ifdef HAVE_OPENSSL_CRL
641 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
642 *(int *)arg = lo->ldo_tls_crlcheck;
645 case LDAP_OPT_X_TLS_CIPHER_SUITE:
646 *(char **)arg = lo->ldo_tls_ciphersuite ?
647 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
649 case LDAP_OPT_X_TLS_PROTOCOL_MIN:
650 *(int *)arg = lo->ldo_tls_protocol_min;
652 case LDAP_OPT_X_TLS_RANDOM_FILE:
653 *(char **)arg = lo->ldo_tls_randfile ?
654 LDAP_STRDUP( lo->ldo_tls_randfile ) : NULL;
656 case LDAP_OPT_X_TLS_SSL_CTX: {
659 LDAPConn *conn = ld->ld_defconn;
660 if ( conn != NULL ) {
661 Sockbuf *sb = conn->lconn_sb;
662 retval = ldap_pvt_tls_sb_ctx( sb );
665 *(void **)arg = retval;
668 case LDAP_OPT_X_TLS_CONNECT_CB:
669 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
671 case LDAP_OPT_X_TLS_CONNECT_ARG:
672 *(void **)arg = lo->ldo_tls_connect_arg;
681 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
683 struct ldapoptions *lo;
686 assert( LDAP_VALID( ld ) );
688 if( !LDAP_VALID( ld ) ) {
689 return LDAP_OPT_ERROR;
692 lo = &ld->ld_options;
695 /* Get pointer to global option structure */
696 lo = LDAP_INT_GLOBAL_OPT();
698 return LDAP_NO_MEMORY;
704 if ( !arg ) return -1;
706 switch( *(int *) arg ) {
707 case LDAP_OPT_X_TLS_NEVER:
708 case LDAP_OPT_X_TLS_DEMAND:
709 case LDAP_OPT_X_TLS_ALLOW:
710 case LDAP_OPT_X_TLS_TRY:
711 case LDAP_OPT_X_TLS_HARD:
713 lo->ldo_tls_mode = *(int *)arg;
720 case LDAP_OPT_X_TLS_CTX:
721 if ( lo->ldo_tls_ctx )
722 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
723 lo->ldo_tls_ctx = arg;
724 tls_ctx_ref( lo->ldo_tls_ctx );
726 case LDAP_OPT_X_TLS_CONNECT_CB:
727 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
729 case LDAP_OPT_X_TLS_CONNECT_ARG:
730 lo->ldo_tls_connect_arg = arg;
732 case LDAP_OPT_X_TLS_CACERTFILE:
733 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
734 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
736 case LDAP_OPT_X_TLS_CACERTDIR:
737 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
738 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
740 case LDAP_OPT_X_TLS_CERTFILE:
741 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
742 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
744 case LDAP_OPT_X_TLS_KEYFILE:
745 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
746 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
748 case LDAP_OPT_X_TLS_DHFILE:
749 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
750 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
752 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
753 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
754 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
756 case LDAP_OPT_X_TLS_REQUIRE_CERT:
757 if ( !arg ) return -1;
758 switch( *(int *) arg ) {
759 case LDAP_OPT_X_TLS_NEVER:
760 case LDAP_OPT_X_TLS_DEMAND:
761 case LDAP_OPT_X_TLS_ALLOW:
762 case LDAP_OPT_X_TLS_TRY:
763 case LDAP_OPT_X_TLS_HARD:
764 lo->ldo_tls_require_cert = * (int *) arg;
768 #ifdef HAVE_OPENSSL_CRL
769 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
770 if ( !arg ) return -1;
771 switch( *(int *) arg ) {
772 case LDAP_OPT_X_TLS_CRL_NONE:
773 case LDAP_OPT_X_TLS_CRL_PEER:
774 case LDAP_OPT_X_TLS_CRL_ALL:
775 lo->ldo_tls_crlcheck = * (int *) arg;
780 case LDAP_OPT_X_TLS_CIPHER_SUITE:
781 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
782 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
785 case LDAP_OPT_X_TLS_PROTOCOL_MIN:
786 if ( !arg ) return -1;
787 lo->ldo_tls_protocol_min = *(int *)arg;
789 case LDAP_OPT_X_TLS_RANDOM_FILE:
792 if ( lo->ldo_tls_randfile ) LDAP_FREE (lo->ldo_tls_randfile );
793 lo->ldo_tls_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
795 case LDAP_OPT_X_TLS_NEWCTX:
796 if ( !arg ) return -1;
797 if ( lo->ldo_tls_ctx )
798 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
799 lo->ldo_tls_ctx = NULL;
800 return ldap_int_tls_init_ctx( lo, *(int *)arg );
808 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
815 return LDAP_PARAM_ERROR;
819 host = srv->lud_host;
821 host = conn->lconn_server->lud_host;
824 /* avoid NULL host */
829 (void) tls_init( tls_imp );
832 * Fortunately, the lib uses blocking io...
834 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
835 ld->ld_errno = LDAP_CONNECT_ERROR;
836 return (ld->ld_errno);
839 ssl = ldap_pvt_tls_sb_ctx( sb );
840 assert( ssl != NULL );
843 * compare host with name(s) in certificate
845 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER &&
846 ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW) {
847 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
848 if (ld->ld_errno != LDAP_SUCCESS) {
857 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
861 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
866 ldap_pvt_tls_get_strength( void *s )
868 tls_session *session = s;
870 return tls_imp->ti_session_strength( session );
874 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
876 tls_session *session = s;
877 struct berval der_dn;
880 rc = tls_imp->ti_session_my_dn( session, &der_dn );
881 if ( rc == LDAP_SUCCESS )
882 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
885 #endif /* HAVE_TLS */
888 ldap_start_tls( LDAP *ld,
889 LDAPControl **serverctrls,
890 LDAPControl **clientctrls,
893 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
894 NULL, serverctrls, clientctrls, msgidp );
898 ldap_install_tls( LDAP *ld )
901 return LDAP_NOT_SUPPORTED;
903 if ( ldap_tls_inplace( ld ) ) {
904 return LDAP_LOCAL_ERROR;
907 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
912 ldap_start_tls_s ( LDAP *ld,
913 LDAPControl **serverctrls,
914 LDAPControl **clientctrls )
917 return LDAP_NOT_SUPPORTED;
921 struct berval *rspdata = NULL;
923 /* XXYYZ: this initiates operation only on default connection! */
925 if ( ldap_tls_inplace( ld ) ) {
926 return LDAP_LOCAL_ERROR;
929 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
930 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
932 if ( rspoid != NULL ) {
936 if ( rspdata != NULL ) {
937 ber_bvfree( rspdata );
940 if ( rc == LDAP_SUCCESS ) {
941 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
948 /* These tags probably all belong in lber.h, but they're
949 * not normally encountered when processing LDAP, so maybe
950 * they belong somewhere else instead.
953 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
955 /* Tags for string types used in a DirectoryString.
957 * Note that IA5string is not one of the defined choices for
958 * DirectoryString in X.520, but it gets used for email AVAs.
960 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
961 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
962 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
963 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
964 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
965 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
968 find_oid( struct berval *oid )
972 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
973 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
974 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
980 /* Converts BER Bitstring value to LDAP BitString value (RFC4517)
985 * berValue and ldapValue should not be NULL
988 #define BITS_PER_BYTE 8
989 #define SQUOTE_LENGTH 1
990 #define B_CHAR_LENGTH 1
991 #define STR_OVERHEAD (2*SQUOTE_LENGTH + B_CHAR_LENGTH)
994 der_to_ldap_BitString (struct berval *berValue,
995 struct berval *ldapValue)
997 ber_len_t bitPadding=0;
998 ber_len_t bits, maxBits;
1001 ber_len_t bitLength;
1003 unsigned char* valPtr;
1005 ldapValue->bv_len=0;
1006 ldapValue->bv_val=NULL;
1008 /* Gets padding and points to binary data */
1009 valLen=berValue->bv_len;
1010 valPtr=(unsigned char*)berValue->bv_val;
1012 bitPadding=(ber_len_t)(valPtr[0]);
1016 /* If Block is non DER encoding fixes to DER encoding */
1017 if (bitPadding >= BITS_PER_BYTE) {
1018 if (valLen*BITS_PER_BYTE > bitPadding ) {
1019 valLen-=(bitPadding/BITS_PER_BYTE);
1020 bitPadding%=BITS_PER_BYTE;
1026 /* Just in case bad encoding */
1027 if (valLen*BITS_PER_BYTE < bitPadding ) {
1032 /* Gets buffer to hold RFC4517 Bit String format */
1033 bitLength=valLen*BITS_PER_BYTE-bitPadding;
1034 tmpStr=LDAP_MALLOC(bitLength + STR_OVERHEAD + 1);
1037 return LDAP_NO_MEMORY;
1039 ldapValue->bv_val=tmpStr;
1040 ldapValue->bv_len=bitLength + STR_OVERHEAD;
1042 /* Formatting in '*binary-digit'B format */
1043 maxBits=BITS_PER_BYTE;
1048 maxBits-=bitPadding;
1049 for (bits=0; bits<maxBits; bits++) {
1064 return LDAP_SUCCESS;
1067 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
1068 * x509_name must be raw DER. If func is non-NULL, the
1069 * constructed DN will use numeric OIDs to identify attributeTypes,
1070 * and the func() will be invoked to rewrite the DN with the given
1073 * Otherwise the DN will use shortNames from a hardcoded table.
1076 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
1081 LDAPAVA *newAVA, *baseAVA;
1082 BerElementBuffer berbuf;
1083 BerElement *ber = (BerElement *)&berbuf;
1084 char oids[8192], *oidptr = oids, *oidbuf = NULL;
1086 char *dn_end, *rdn_end;
1087 int i, navas, nrdns, rc = LDAP_SUCCESS;
1088 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
1094 struct berval Oid, Val, oid2, *in = x509_name;
1096 assert( bv != NULL );
1104 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
1105 * An AVA is a SEQUENCE of attr and value.
1106 * Count the number of AVAs and RDNs
1108 ber_init2( ber, in, LBER_USE_DER );
1109 tag = ber_peek_tag( ber, &len );
1110 if ( tag != LBER_SEQUENCE )
1111 return LDAP_DECODING_ERROR;
1113 for ( tag = ber_first_element( ber, &len, &dn_end );
1115 tag = ber_next_element( ber, &len, dn_end )) {
1117 for ( tag = ber_first_element( ber, &len, &rdn_end );
1118 tag == LBER_SEQUENCE;
1119 tag = ber_next_element( ber, &len, rdn_end )) {
1120 tag = ber_skip_tag( ber, &len );
1121 ber_skip_data( ber, len );
1126 /* Allocate the DN/RDN/AVA stuff as a single block */
1127 dnsize = sizeof(LDAPRDN) * (nrdns+1);
1128 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
1129 dnsize += sizeof(LDAPAVA) * navas;
1130 if (dnsize > sizeof(ptrs)) {
1131 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
1132 if ( newDN == NULL )
1133 return LDAP_NO_MEMORY;
1135 newDN = (LDAPDN)(char *)ptrs;
1138 newDN[nrdns] = NULL;
1139 newRDN = (LDAPRDN)(newDN + nrdns+1);
1140 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
1143 /* Rewind and start extracting */
1146 tag = ber_first_element( ber, &len, &dn_end );
1147 for ( i = nrdns - 1; i >= 0; i-- ) {
1150 for ( tag = ber_first_element( ber, &len, &rdn_end );
1151 tag == LBER_SEQUENCE;
1152 tag = ber_next_element( ber, &len, rdn_end )) {
1155 tag = ber_skip_tag( ber, &len );
1156 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
1157 if ( tag != LBER_TAG_OID ) {
1158 rc = LDAP_DECODING_ERROR;
1162 oid2.bv_val = oidptr;
1163 oid2.bv_len = oidrem;
1164 if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) {
1165 rc = LDAP_DECODING_ERROR;
1168 oidname = find_oid( &oid2 );
1170 newAVA->la_attr = oid2;
1171 oidptr += oid2.bv_len + 1;
1172 oidrem -= oid2.bv_len + 1;
1174 /* Running out of OID buffer space? */
1176 if ( oidsize == 0 ) {
1177 oidsize = sizeof(oids) * 2;
1179 oidbuf = LDAP_MALLOC( oidsize );
1180 if ( oidbuf == NULL ) goto nomem;
1184 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
1185 if ( oidbuf == NULL ) goto nomem;
1186 /* Buffer moved! Fix AVA pointers */
1187 if ( old != oidbuf ) {
1189 long dif = oidbuf - old;
1191 for (a=baseAVA; a<=newAVA; a++){
1192 if (a->la_attr.bv_val >= old &&
1193 a->la_attr.bv_val <= (old + oidsize))
1194 a->la_attr.bv_val += dif;
1197 oidptr = oidbuf + oidsize - oidrem;
1204 newAVA->la_attr = oidname->oid;
1206 newAVA->la_attr = oidname->name;
1209 newAVA->la_private = NULL;
1210 newAVA->la_flags = LDAP_AVA_STRING;
1211 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
1213 case LBER_TAG_UNIVERSAL:
1214 /* This uses 32-bit ISO 10646-1 */
1215 csize = 4; goto to_utf8;
1217 /* This uses 16-bit ISO 10646-1 */
1218 csize = 2; goto to_utf8;
1219 case LBER_TAG_TELETEX:
1220 /* This uses 8-bit, assume ISO 8859-1 */
1222 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
1223 newAVA->la_flags |= LDAP_AVA_NONPRINTABLE;
1225 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
1226 if (rc != LDAP_SUCCESS) goto nomem;
1229 newAVA->la_flags |= LDAP_AVA_NONPRINTABLE;
1230 /* This is already in UTF-8 encoding */
1232 case LBER_TAG_PRINTABLE:
1233 /* These are always 7-bit strings */
1234 newAVA->la_value = Val;
1236 case LBER_BITSTRING:
1237 /* X.690 bitString value converted to RFC4517 Bit String */
1238 rc = der_to_ldap_BitString( &Val, &newAVA->la_value );
1241 /* Not a string type at all */
1242 newAVA->la_flags = 0;
1243 newAVA->la_value = Val;
1249 tag = ber_next_element( ber, &len, dn_end );
1253 rc = func( newDN, flags, NULL );
1254 if ( rc != LDAP_SUCCESS )
1258 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
1261 for (;baseAVA < newAVA; baseAVA++) {
1262 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
1263 LDAP_FREE( baseAVA->la_attr.bv_val );
1264 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
1265 LDAP_FREE( baseAVA->la_value.bv_val );
1269 LDAP_FREE( oidbuf );
1270 if ( newDN != (LDAPDN)(char *) ptrs )