1 /* tls.c - Handle tls/ssl using SSLeay, OpenSSL or GNUTLS. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2007 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: GNUTLS support written by Howard Chu and
17 * Matt Backes; sponsored by The Written Word (thewrittenword.com)
18 * and Stanford University (stanford.edu).
22 #include "ldap_config.h"
26 #include <ac/stdlib.h>
28 #include <ac/socket.h>
29 #include <ac/string.h>
32 #include <ac/unistd.h>
34 #include <ac/dirent.h>
41 #include <ldap_pvt_thread.h>
45 #include <gnutls/gnutls.h>
46 #include <gnutls/x509.h>
49 #define DH_BITS (1024)
52 #ifdef HAVE_OPENSSL_SSL_H
53 #include <openssl/ssl.h>
54 #include <openssl/x509v3.h>
55 #include <openssl/err.h>
56 #include <openssl/rand.h>
57 #include <openssl/safestack.h>
58 #elif defined( HAVE_SSL_H )
63 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
64 (void *)&sb_tls_sbio )
68 /* RFC2459 minimum required set of supported attribute types
71 typedef struct oid_name {
76 #define CN_OID oids[0].oid.bv_val
78 static oid_name oids[] = {
79 { BER_BVC("2.5.4.3"), BER_BVC("cn") },
80 { BER_BVC("2.5.4.4"), BER_BVC("sn") },
81 { BER_BVC("2.5.4.6"), BER_BVC("c") },
82 { BER_BVC("2.5.4.7"), BER_BVC("l") },
83 { BER_BVC("2.5.4.8"), BER_BVC("st") },
84 { BER_BVC("2.5.4.10"), BER_BVC("o") },
85 { BER_BVC("2.5.4.11"), BER_BVC("ou") },
86 { BER_BVC("2.5.4.12"), BER_BVC("title") },
87 { BER_BVC("2.5.4.41"), BER_BVC("name") },
88 { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
89 { BER_BVC("2.5.4.43"), BER_BVC("initials") },
90 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
91 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
92 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
93 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
94 { BER_BVNULL, BER_BVNULL }
100 typedef struct tls_cipher_suite {
102 gnutls_kx_algorithm_t kx;
103 gnutls_cipher_algorithm_t cipher;
104 gnutls_mac_algorithm_t mac;
105 gnutls_protocol_t version;
108 static tls_cipher_suite *ciphers;
109 static int n_ciphers;
111 /* sorta replacing SSL_CTX */
112 typedef struct tls_ctx {
113 struct ldapoptions *lo;
114 gnutls_certificate_credentials_t cred;
115 gnutls_dh_params_t dh_params;
116 unsigned long verify_depth;
121 #ifdef LDAP_R_COMPILE
122 ldap_pvt_thread_mutex_t ref_mutex;
126 /* sorta replacing SSL */
127 typedef struct tls_session {
129 gnutls_session_t session;
130 struct berval peer_der_dn;
133 #ifdef LDAP_R_COMPILE
136 ldap_pvt_gcry_mutex_init( void **priv )
139 ldap_pvt_thread_mutex_t *lock = LDAP_MALLOC( sizeof( ldap_pvt_thread_mutex_t ));
144 err = ldap_pvt_thread_mutex_init( lock );
153 ldap_pvt_gcry_mutex_destroy( void **lock )
155 int err = ldap_pvt_thread_mutex_destroy( *lock );
160 ldap_pvt_gcry_mutex_lock( void **lock )
162 return ldap_pvt_thread_mutex_lock( *lock );
165 ldap_pvt_gcry_mutex_unlock( void **lock )
167 return ldap_pvt_thread_mutex_unlock( *lock );
170 static struct gcry_thread_cbs ldap_generic_thread_cbs = {
171 GCRY_THREAD_OPTION_USER,
173 ldap_pvt_gcry_mutex_init,
174 ldap_pvt_gcry_mutex_destroy,
175 ldap_pvt_gcry_mutex_lock,
176 ldap_pvt_gcry_mutex_unlock,
177 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
181 tls_init_threads( void )
183 gcry_control (GCRYCTL_SET_THREAD_CBS, &ldap_generic_thread_cbs);
185 #endif /* LDAP_R_COMPILE */
188 ldap_pvt_tls_ctx_free ( void *c )
195 #ifdef LDAP_R_COMPILE
196 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
198 refcount = --ctx->refcount;
199 #ifdef LDAP_R_COMPILE
200 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
204 LDAP_FREE( ctx->kx_list );
205 gnutls_certificate_free_credentials( ctx->cred );
210 tls_ctx_new ( struct ldapoptions *lo )
214 ctx = ber_memcalloc ( 1, sizeof (*ctx) );
217 if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
222 #ifdef LDAP_R_COMPILE
223 ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
230 tls_ctx_ref( tls_ctx *ctx )
232 #ifdef LDAP_R_COMPILE
233 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
236 #ifdef LDAP_R_COMPILE
237 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
242 tls_session_new ( tls_ctx * ctx, int is_server )
244 tls_session *session;
246 session = ber_memcalloc ( 1, sizeof (*session) );
251 gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
252 gnutls_set_default_priority( session->session );
253 if ( ctx->kx_list ) {
254 gnutls_kx_set_priority( session->session, ctx->kx_list );
255 gnutls_cipher_set_priority( session->session, ctx->cipher_list );
256 gnutls_mac_set_priority( session->session, ctx->mac_list );
259 gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, ctx->cred );
263 if ( ctx->lo->ldo_tls_require_cert ) {
264 flag = GNUTLS_CERT_REQUEST;
265 if ( ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
266 ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
267 flag = GNUTLS_CERT_REQUIRE;
268 gnutls_certificate_server_set_request( session->session, flag );
275 tls_session_free ( tls_session * session )
277 ber_memfree ( session );
280 #define tls_session_connect( ssl ) gnutls_handshake( ssl->session )
281 #define tls_session_accept( ssl ) gnutls_handshake( ssl->session )
283 /* suites is a string of colon-separated cipher suite names. */
285 tls_parse_ciphers( tls_ctx *ctx, char *suites )
289 int *list, nkx = 0, ncipher = 0, nmac = 0;
290 int *kx, *cipher, *mac;
295 end = strchr(ptr, ':');
300 for (i=0; i<n_ciphers; i++) {
301 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
306 if ( i == n_ciphers ) {
307 /* unrecognized cipher suite */
312 /* Space for all 3 lists */
313 list = LDAP_MALLOC( (num+1) * sizeof(int) * 3 );
322 end = strchr(ptr, ':');
327 for (i=0; i<n_ciphers; i++) {
328 /* For each cipher suite, insert its algorithms into
329 * their respective priority lists. Make sure they
330 * only appear once in each list.
332 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
333 for (j=0; j<nkx; j++)
334 if ( kx[j] == ciphers[i].kx )
337 kx[nkx++] = ciphers[i].kx;
338 for (j=0; j<ncipher; j++)
339 if ( cipher[j] == ciphers[i].cipher )
342 cipher[ncipher++] = ciphers[i].cipher;
343 for (j=0; j<nmac; j++)
344 if ( mac[j] == ciphers[i].mac )
347 mac[nmac++] = ciphers[i].mac;
356 ctx->cipher_list = cipher;
363 typedef SSL_CTX tls_ctx;
364 typedef SSL tls_session;
366 static int tls_opt_trace = 1;
367 static char *tls_opt_randfile = NULL;
369 static void tls_report_error( void );
371 static void tls_info_cb( const SSL *ssl, int where, int ret );
372 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
373 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
374 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
376 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
378 typedef struct dhplist {
379 struct dhplist *next;
384 static dhplist *dhparams;
386 static int tls_seed_PRNG( const char *randfile );
388 #ifdef LDAP_R_COMPILE
390 * provide mutexes for the SSLeay library.
392 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
394 static void tls_locking_cb( int mode, int type, const char *file, int line )
396 if ( mode & CRYPTO_LOCK ) {
397 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
399 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
403 static unsigned long tls_thread_self( void )
405 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
406 * is an integral type that fits in an unsigned long
409 /* force an error if ldap_pvt_thread_t is not such a type */
412 3 / (ldap_pvt_thread_t)2 == 1 /* integer */
413 && (ldap_pvt_thread_t)-1 > 0UL /* not too wide signed */
414 && (ldap_pvt_thread_t)-2 < -1UL /* not too wide unsigned */
416 typedef struct { int dummy: ok ? 1 : -1; } Check[ok ? 1 : -1];
418 return ldap_pvt_thread_self();
421 static void tls_init_threads( void )
425 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
426 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
428 CRYPTO_set_locking_callback( tls_locking_cb );
429 CRYPTO_set_id_callback( tls_thread_self );
431 #endif /* LDAP_R_COMPILE */
434 ldap_pvt_tls_ctx_free ( void *c )
441 tls_ctx_new( struct ldapoptions *lo )
443 return SSL_CTX_new( SSLv23_method() );
447 tls_ctx_ref( void *c )
450 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
454 tls_session_new( tls_ctx *ctx, int is_server )
456 return SSL_new( ctx );
459 #define tls_session_connect( ssl ) SSL_connect( ssl )
460 #define tls_session_accept( ssl ) SSL_accept( ssl )
462 static STACK_OF(X509_NAME) *
463 get_ca_list( char * bundle, char * dir )
465 STACK_OF(X509_NAME) *ca_list = NULL;
468 ca_list = SSL_load_client_CA_file( bundle );
470 #if defined(HAVE_DIRENT_H) || defined(dirent)
475 ca_list = sk_X509_NAME_new_null();
478 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
480 sk_X509_NAME_free( ca_list );
488 #endif /* HAVE_GNUTLS */
490 #ifdef LDAP_R_COMPILE
492 * an extra mutex for the default ctx.
494 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
498 ldap_int_tls_destroy( struct ldapoptions *lo )
500 if ( lo->ldo_tls_ctx ) {
501 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
502 lo->ldo_tls_ctx = NULL;
505 if ( lo->ldo_tls_certfile ) {
506 LDAP_FREE( lo->ldo_tls_certfile );
507 lo->ldo_tls_certfile = NULL;
509 if ( lo->ldo_tls_keyfile ) {
510 LDAP_FREE( lo->ldo_tls_keyfile );
511 lo->ldo_tls_keyfile = NULL;
513 if ( lo->ldo_tls_dhfile ) {
514 LDAP_FREE( lo->ldo_tls_dhfile );
515 lo->ldo_tls_dhfile = NULL;
517 if ( lo->ldo_tls_cacertfile ) {
518 LDAP_FREE( lo->ldo_tls_cacertfile );
519 lo->ldo_tls_cacertfile = NULL;
521 if ( lo->ldo_tls_cacertdir ) {
522 LDAP_FREE( lo->ldo_tls_cacertdir );
523 lo->ldo_tls_cacertdir = NULL;
525 if ( lo->ldo_tls_ciphersuite ) {
526 LDAP_FREE( lo->ldo_tls_ciphersuite );
527 lo->ldo_tls_ciphersuite = NULL;
530 if ( lo->ldo_tls_crlfile ) {
531 LDAP_FREE( lo->ldo_tls_crlfile );
532 lo->ldo_tls_crlfile = NULL;
538 * Tear down the TLS subsystem. Should only be called once.
541 ldap_pvt_tls_destroy( void )
543 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
545 ldap_int_tls_destroy( lo );
548 LDAP_FREE( ciphers );
551 gnutls_global_deinit();
557 if ( tls_opt_randfile ) {
558 LDAP_FREE( tls_opt_randfile );
559 tls_opt_randfile = NULL;
565 * Initialize TLS subsystem. Should be called only once.
568 ldap_pvt_tls_init( void )
570 static int tls_initialized = 0;
572 if ( tls_initialized++ ) return 0;
574 #ifdef LDAP_R_COMPILE
576 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
580 gnutls_global_init ();
582 /* GNUtls cipher suite handling: The library ought to parse suite
583 * names for us, but it doesn't. It will return a list of suite names
584 * that it supports, so we can do parsing ourselves. It ought to tell
585 * us how long the list is, but it doesn't do that either, so we just
586 * have to count it manually...
590 tls_cipher_suite *ptr, tmp;
593 while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
594 &tmp.mac, &tmp.version ))
599 ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
602 for ( i=0; i<n_ciphers; i++ ) {
603 ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
604 &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
605 &ciphers[i].version );
609 #else /* !HAVE_GNUTLS */
613 char *file = LDAP_STRDUP( tls_opt_randfile );
614 if ( file ) __atoe( file );
615 (void) tls_seed_PRNG( file );
619 (void) tls_seed_PRNG( tls_opt_randfile );
622 SSL_load_error_strings();
623 SSLeay_add_ssl_algorithms();
625 /* FIXME: mod_ssl does this */
626 X509V3_add_standard_extensions();
628 #endif /* HAVE_GNUTLS */
633 * initialize a new TLS context
636 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
639 char *ciphersuite = lo->ldo_tls_ciphersuite;
640 char *cacertfile = lo->ldo_tls_cacertfile;
641 char *cacertdir = lo->ldo_tls_cacertdir;
642 char *certfile = lo->ldo_tls_certfile;
643 char *keyfile = lo->ldo_tls_keyfile;
645 char *crlfile = lo->ldo_tls_crlfile;
647 char *dhfile = lo->ldo_tls_dhfile;
650 if ( lo->ldo_tls_ctx )
655 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
656 /* minimum configuration not provided */
657 return LDAP_NOT_SUPPORTED;
661 /* This ASCII/EBCDIC handling is a real pain! */
663 ciphersuite = LDAP_STRDUP( ciphersuite );
664 __atoe( ciphersuite );
667 cacertfile = LDAP_STRDUP( cacertfile );
668 __atoe( cacertfile );
671 certfile = LDAP_STRDUP( certfile );
675 keyfile = LDAP_STRDUP( keyfile );
680 crlfile = LDAP_STRDUP( crlfile );
685 cacertdir = LDAP_STRDUP( cacertdir );
689 dhfile = LDAP_STRDUP( dhfile );
694 lo->ldo_tls_ctx = tls_ctx_new( lo );
695 if ( lo->ldo_tls_ctx == NULL ) {
697 Debug( LDAP_DEBUG_ANY,
698 "TLS: could not allocate default ctx.\n",
701 Debug( LDAP_DEBUG_ANY,
702 "TLS: could not allocate default ctx (%lu).\n",
703 ERR_peek_error(),0,0);
710 if ( lo->ldo_tls_ciphersuite &&
711 tls_parse_ciphers( lo->ldo_tls_ctx,
713 Debug( LDAP_DEBUG_ANY,
714 "TLS: could not set cipher list %s.\n",
715 lo->ldo_tls_ciphersuite, 0, 0 );
720 if (lo->ldo_tls_cacertdir != NULL) {
721 Debug( LDAP_DEBUG_ANY,
722 "TLS: warning: cacertdir not implemented for gnutls\n",
726 if (lo->ldo_tls_cacertfile != NULL) {
727 rc = gnutls_certificate_set_x509_trust_file(
728 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
730 GNUTLS_X509_FMT_PEM );
731 if ( rc < 0 ) goto error_exit;
734 if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
735 rc = gnutls_certificate_set_x509_key_file(
736 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
739 GNUTLS_X509_FMT_PEM );
740 if ( rc ) goto error_exit;
741 } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
742 Debug( LDAP_DEBUG_ANY,
743 "TLS: only one of certfile and keyfile specified\n",
749 if ( lo->ldo_tls_dhfile ) {
750 Debug( LDAP_DEBUG_ANY,
751 "TLS: warning: ignoring dhfile\n",
755 if ( lo->ldo_tls_crlfile ) {
756 rc = gnutls_certificate_set_x509_crl_file(
757 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
759 GNUTLS_X509_FMT_PEM );
760 if ( rc < 0 ) goto error_exit;
763 gnutls_dh_params_init (&((tls_ctx*)
764 lo->ldo_tls_ctx)->dh_params);
765 gnutls_dh_params_generate2 (((tls_ctx*)
766 lo->ldo_tls_ctx)->dh_params,
770 #else /* !HAVE_GNUTLS */
773 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
774 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
777 if ( lo->ldo_tls_ciphersuite &&
778 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
780 Debug( LDAP_DEBUG_ANY,
781 "TLS: could not set cipher list %s.\n",
782 lo->ldo_tls_ciphersuite, 0, 0 );
788 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
789 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
790 cacertfile, cacertdir ) ||
791 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
793 Debug( LDAP_DEBUG_ANY, "TLS: "
794 "could not load verify locations (file:`%s',dir:`%s').\n",
795 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
796 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
804 STACK_OF(X509_NAME) *calist;
805 /* List of CA names to send to a client */
806 calist = get_ca_list( cacertfile, cacertdir );
808 Debug( LDAP_DEBUG_ANY, "TLS: "
809 "could not load client CA list (file:`%s',dir:`%s').\n",
810 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
811 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
818 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
822 if ( lo->ldo_tls_certfile &&
823 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
824 certfile, SSL_FILETYPE_PEM ) )
826 Debug( LDAP_DEBUG_ANY,
827 "TLS: could not use certificate `%s'.\n",
828 lo->ldo_tls_certfile,0,0);
834 /* Key validity is checked automatically if cert has already been set */
835 if ( lo->ldo_tls_keyfile &&
836 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
837 keyfile, SSL_FILETYPE_PEM ) )
839 Debug( LDAP_DEBUG_ANY,
840 "TLS: could not use key file `%s'.\n",
841 lo->ldo_tls_keyfile,0,0);
847 if ( lo->ldo_tls_dhfile ) {
852 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
853 Debug( LDAP_DEBUG_ANY,
854 "TLS: could not use DH parameters file `%s'.\n",
855 lo->ldo_tls_dhfile,0,0);
860 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
861 p = LDAP_MALLOC( sizeof(dhplist) );
863 p->keylength = DH_size( dh ) * 8;
872 if ( tls_opt_trace ) {
873 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
877 if ( lo->ldo_tls_require_cert ) {
879 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
880 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
881 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
885 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
886 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
887 tls_verify_ok : tls_verify_cb );
888 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
889 if ( lo->ldo_tls_dhfile ) {
890 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
892 #ifdef HAVE_OPENSSL_CRL
893 if ( lo->ldo_tls_crlcheck ) {
894 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
895 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
896 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
897 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
898 X509_STORE_set_flags( x509_s,
899 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
904 #endif /* HAVE_GNUTLS */
907 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
908 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
909 lo->ldo_tls_ctx = NULL;
912 LDAP_FREE( ciphersuite );
913 LDAP_FREE( cacertfile );
914 LDAP_FREE( certfile );
915 LDAP_FREE( keyfile );
917 LDAP_FREE( crlfile );
919 LDAP_FREE( cacertdir );
927 * initialize the default context
930 ldap_pvt_tls_init_def_ctx( int is_server )
932 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
934 #ifdef LDAP_R_COMPILE
935 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
937 rc = ldap_int_tls_init_ctx( lo, is_server );
938 #ifdef LDAP_R_COMPILE
939 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
945 alloc_handle( void *ctx_arg, int is_server )
953 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
954 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
955 ctx = lo->ldo_tls_ctx;
958 ssl = tls_session_new( ctx, is_server );
960 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
967 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
969 sb->sb_trans_needs_read = 0;
970 sb->sb_trans_needs_write = 0;
973 if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
976 switch (gnutls_record_get_direction (ssl->session)) {
978 sb->sb_trans_needs_read = 1;
981 sb->sb_trans_needs_write = 1;
984 #else /* !HAVE_GNUTLS */
985 rc = SSL_get_error(ssl, rc);
986 if (rc == SSL_ERROR_WANT_READ) {
987 sb->sb_trans_needs_read = 1;
990 } else if (rc == SSL_ERROR_WANT_WRITE) {
991 sb->sb_trans_needs_write = 1;
994 } else if (rc == SSL_ERROR_WANT_CONNECT) {
997 #endif /* HAVE_GNUTLS */
1002 * TLS support for LBER Sockbufs
1007 Sockbuf_IO_Desc *sbiod;
1013 sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
1017 if ( buf == NULL || len <= 0 ) return 0;
1019 p = (struct tls_data *)ptr;
1021 if ( p == NULL || p->sbiod == NULL ) {
1025 return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1029 sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1033 if ( buf == NULL || len <= 0 ) return 0;
1035 p = (struct tls_data *)ptr;
1037 if ( p == NULL || p->sbiod == NULL ) {
1041 return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1045 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1048 tls_session *session = arg;
1050 assert( sbiod != NULL );
1052 p = LBER_MALLOC( sizeof( *p ) );
1057 gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1058 gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1059 gnutls_transport_set_push_function( session->session, sb_gtls_send );
1062 sbiod->sbiod_pvt = p;
1067 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1071 assert( sbiod != NULL );
1072 assert( sbiod->sbiod_pvt != NULL );
1074 p = (struct tls_data *)sbiod->sbiod_pvt;
1075 gnutls_deinit ( p->ssl->session );
1076 LBER_FREE( p->ssl );
1077 LBER_FREE( sbiod->sbiod_pvt );
1078 sbiod->sbiod_pvt = NULL;
1083 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1087 assert( sbiod != NULL );
1088 assert( sbiod->sbiod_pvt != NULL );
1090 p = (struct tls_data *)sbiod->sbiod_pvt;
1091 gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1096 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1100 assert( sbiod != NULL );
1101 assert( sbiod->sbiod_pvt != NULL );
1103 p = (struct tls_data *)sbiod->sbiod_pvt;
1105 if ( opt == LBER_SB_OPT_GET_SSL ) {
1106 *((tls_session **)arg) = p->ssl;
1109 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1110 if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1115 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1119 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1125 assert( sbiod != NULL );
1126 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1128 p = (struct tls_data *)sbiod->sbiod_pvt;
1130 ret = gnutls_record_recv ( p->ssl->session, buf, len );
1132 case GNUTLS_E_INTERRUPTED:
1133 case GNUTLS_E_AGAIN:
1134 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1135 sock_errset(EWOULDBLOCK);
1138 case GNUTLS_E_REHANDSHAKE:
1139 for ( ret = gnutls_handshake ( p->ssl->session );
1140 ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1141 ret = gnutls_handshake ( p->ssl->session ) );
1142 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1146 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1152 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1158 assert( sbiod != NULL );
1159 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1161 p = (struct tls_data *)sbiod->sbiod_pvt;
1163 ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1165 if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1166 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1167 sock_errset(EWOULDBLOCK);
1170 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1175 #else /* !HAVE_GNUTLS */
1178 sb_tls_bio_create( BIO *b ) {
1187 sb_tls_bio_destroy( BIO *b )
1189 if ( b == NULL ) return 0;
1191 b->ptr = NULL; /* sb_tls_remove() will free it */
1198 sb_tls_bio_read( BIO *b, char *buf, int len )
1203 if ( buf == NULL || len <= 0 ) return 0;
1205 p = (struct tls_data *)b->ptr;
1207 if ( p == NULL || p->sbiod == NULL ) {
1211 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1213 BIO_clear_retry_flags( b );
1215 int err = sock_errno();
1216 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1217 BIO_set_retry_read( b );
1225 sb_tls_bio_write( BIO *b, const char *buf, int len )
1230 if ( buf == NULL || len <= 0 ) return 0;
1232 p = (struct tls_data *)b->ptr;
1234 if ( p == NULL || p->sbiod == NULL ) {
1238 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1240 BIO_clear_retry_flags( b );
1242 int err = sock_errno();
1243 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1244 BIO_set_retry_write( b );
1252 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1254 if ( cmd == BIO_CTRL_FLUSH ) {
1255 /* The OpenSSL library needs this */
1262 sb_tls_bio_gets( BIO *b, char *buf, int len )
1268 sb_tls_bio_puts( BIO *b, const char *str )
1270 return sb_tls_bio_write( b, str, strlen( str ) );
1273 static BIO_METHOD sb_tls_bio_method =
1275 ( 100 | 0x400 ), /* it's a source/sink BIO */
1287 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1292 assert( sbiod != NULL );
1294 p = LBER_MALLOC( sizeof( *p ) );
1299 p->ssl = (SSL *)arg;
1301 bio = BIO_new( &sb_tls_bio_method );
1302 bio->ptr = (void *)p;
1303 SSL_set_bio( p->ssl, bio, bio );
1304 sbiod->sbiod_pvt = p;
1309 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1313 assert( sbiod != NULL );
1314 assert( sbiod->sbiod_pvt != NULL );
1316 p = (struct tls_data *)sbiod->sbiod_pvt;
1318 LBER_FREE( sbiod->sbiod_pvt );
1319 sbiod->sbiod_pvt = NULL;
1324 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1328 assert( sbiod != NULL );
1329 assert( sbiod->sbiod_pvt != NULL );
1331 p = (struct tls_data *)sbiod->sbiod_pvt;
1332 SSL_shutdown( p->ssl );
1337 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1341 assert( sbiod != NULL );
1342 assert( sbiod->sbiod_pvt != NULL );
1344 p = (struct tls_data *)sbiod->sbiod_pvt;
1346 if ( opt == LBER_SB_OPT_GET_SSL ) {
1347 *((SSL **)arg) = p->ssl;
1350 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1351 if( SSL_pending( p->ssl ) > 0 ) {
1356 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1360 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1366 assert( sbiod != NULL );
1367 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1369 p = (struct tls_data *)sbiod->sbiod_pvt;
1371 ret = SSL_read( p->ssl, (char *)buf, len );
1373 errno = WSAGetLastError();
1375 err = SSL_get_error( p->ssl, ret );
1376 if (err == SSL_ERROR_WANT_READ ) {
1377 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1378 sock_errset(EWOULDBLOCK);
1381 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1386 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1392 assert( sbiod != NULL );
1393 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1395 p = (struct tls_data *)sbiod->sbiod_pvt;
1397 ret = SSL_write( p->ssl, (char *)buf, len );
1399 errno = WSAGetLastError();
1401 err = SSL_get_error( p->ssl, ret );
1402 if (err == SSL_ERROR_WANT_WRITE ) {
1403 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1404 sock_errset(EWOULDBLOCK);
1407 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1414 static Sockbuf_IO sb_tls_sbio =
1416 sb_tls_setup, /* sbi_setup */
1417 sb_tls_remove, /* sbi_remove */
1418 sb_tls_ctrl, /* sbi_ctrl */
1419 sb_tls_read, /* sbi_read */
1420 sb_tls_write, /* sbi_write */
1421 sb_tls_close /* sbi_close */
1425 /* Certs are not automatically varified during the handshake */
1427 tls_cert_verify( tls_session *ssl )
1429 unsigned int status = 0;
1431 time_t now = time(0);
1433 err = gnutls_certificate_verify_peers2( ssl->session, &status );
1435 Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1440 Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1444 if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1445 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1449 if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1450 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1456 #endif /* HAVE_GNUTLS */
1459 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
1460 * a SSL_CTX * or NULL, in which case the default ctx is used.
1464 * 0 - Success. Connection is ready for communication.
1465 * <0 - Error. Can't create a TLS stream.
1466 * >0 - Partial success.
1467 * Do a select (using information from lber_pvt_sb_needs_{read,write}
1472 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1474 Sockbuf *sb = conn->lconn_sb;
1478 if ( HAS_TLS( sb ) ) {
1479 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1482 struct ldapoptions *lo;
1485 ctx = ld->ld_options.ldo_tls_ctx;
1487 ssl = alloc_handle( ctx, 0 );
1489 if ( ssl == NULL ) return -1;
1492 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1493 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1495 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1496 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1498 lo = LDAP_INT_GLOBAL_OPT();
1500 ctx = lo->ldo_tls_ctx;
1501 ld->ld_options.ldo_tls_ctx = ctx;
1504 if ( ld->ld_options.ldo_tls_connect_cb )
1505 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1506 ld->ld_options.ldo_tls_connect_arg );
1507 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1508 ld->ld_options.ldo_tls_connect_cb )
1509 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1512 err = tls_session_connect( ssl );
1515 errno = WSAGetLastError();
1524 if ( update_flags( sb, ssl, err )) {
1529 if ((err = ERR_peek_error()))
1532 if ( ld->ld_error ) {
1533 LDAP_FREE( ld->ld_error );
1536 ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1540 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1544 if ( ld->ld_error ) __etoa(ld->ld_error);
1548 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1549 ld->ld_error ? ld->ld_error : "" ,0,0);
1551 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1552 LBER_SBIOD_LEVEL_TRANSPORT );
1554 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1555 LBER_SBIOD_LEVEL_TRANSPORT );
1561 if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1562 err = tls_cert_verify( ssl );
1563 if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1572 * Call this to do a TLS accept on a sockbuf.
1573 * Everything else is the same as with tls_connect.
1576 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1581 if ( HAS_TLS( sb ) ) {
1582 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1585 ssl = alloc_handle( ctx_arg, 1 );
1586 if ( ssl == NULL ) return -1;
1589 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1590 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1592 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1593 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1596 err = tls_session_accept( ssl );
1599 errno = WSAGetLastError();
1608 if ( update_flags( sb, ssl, err )) return 1;
1611 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1612 gnutls_strerror( err ),0,0 );
1614 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1617 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1618 LBER_SBIOD_LEVEL_TRANSPORT );
1620 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1621 LBER_SBIOD_LEVEL_TRANSPORT );
1627 if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1628 err = tls_cert_verify( ssl );
1629 if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1637 ldap_pvt_tls_inplace ( Sockbuf *sb )
1639 return HAS_TLS( sb ) ? 1 : 0;
1643 ldap_tls_inplace( LDAP *ld )
1647 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1648 sb = ld->ld_defconn->lconn_sb;
1650 } else if ( ld->ld_sb ) {
1657 return ldap_pvt_tls_inplace( sb );
1662 x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1664 BerElementBuffer berbuf;
1665 BerElement *ber = (BerElement *)&berbuf;
1670 ber_init2( ber, cert, LBER_USE_DER );
1671 tag = ber_skip_tag( ber, &len ); /* Sequence */
1672 tag = ber_skip_tag( ber, &len ); /* Sequence */
1673 tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1674 if ( tag == 0xa0 ) /* Version is optional */
1675 tag = ber_get_int( ber, &i ); /* Int: Version */
1676 tag = ber_get_int( ber, &i ); /* Int: Serial */
1677 tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1678 ber_skip_data( ber, len );
1679 if ( !get_subject ) {
1680 tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1682 tag = ber_skip_tag( ber, &len );
1683 ber_skip_data( ber, len );
1684 tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1685 ber_skip_data( ber, len );
1686 tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1688 len = ber_ptrlen( ber );
1689 dn->bv_val = cert->bv_val + len;
1690 dn->bv_len = cert->bv_len - len;
1694 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1696 if ( !session->peer_der_dn.bv_val ) {
1697 const gnutls_datum_t *peer_cert_list;
1701 peer_cert_list = gnutls_certificate_get_peers( session->session,
1703 if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1705 bv.bv_len = peer_cert_list->size;
1706 bv.bv_val = peer_cert_list->data;
1708 x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1709 *dnbv = session->peer_der_dn;
1713 #else /* !HAVE_GNUTLS */
1715 tls_get_cert( SSL *s )
1717 /* If peer cert was bad, treat as if no cert was given */
1718 if (SSL_get_verify_result(s)) {
1719 /* If we can send an alert, do so */
1720 if (SSL_version(s) != SSL2_VERSION) {
1721 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1725 return SSL_get_peer_certificate(s);
1729 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1732 X509 *x = tls_get_cert( session );
1735 return LDAP_INVALID_CREDENTIALS;
1737 xn = X509_get_subject_name(x);
1738 dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1739 dnbv->bv_val = xn->bytes->data;
1742 #endif /* HAVE_GNUTLS */
1745 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1746 LDAPDN_rewrite_dummy *func, unsigned flags )
1748 tls_session *session = s;
1752 rc = tls_get_cert_dn( session, &bvdn );
1753 if ( rc ) return rc;
1755 rc = ldap_X509dn2bv( &bvdn, dn,
1756 (LDAPDN_rewrite_func *)func, flags);
1760 /* what kind of hostname were we given? */
1768 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1770 tls_session *session = s;
1772 const gnutls_datum_t *peer_cert_list;
1775 char altname[NI_MAXHOST];
1778 gnutls_x509_crt_t cert;
1782 char *domain = NULL;
1783 #ifdef LDAP_PF_INET6
1784 struct in6_addr addr;
1786 struct in_addr addr;
1788 int n, len1 = 0, len2 = 0;
1790 time_t now = time(0);
1792 if( ldap_int_hostname &&
1793 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1795 name = ldap_int_hostname;
1800 peer_cert_list = gnutls_certificate_get_peers( session->session,
1802 if ( !peer_cert_list ) {
1803 Debug( LDAP_DEBUG_ANY,
1804 "TLS: unable to get peer certificate.\n",
1806 /* If this was a fatal condition, things would have
1807 * aborted long before now.
1809 return LDAP_SUCCESS;
1811 ret = gnutls_x509_crt_init( &cert );
1813 return LDAP_LOCAL_ERROR;
1814 ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1816 gnutls_x509_crt_deinit( cert );
1817 return LDAP_LOCAL_ERROR;
1820 #ifdef LDAP_PF_INET6
1821 if (name[0] == '[' && strchr(name, ']')) {
1822 char *n2 = ldap_strdup(name+1);
1823 *strchr(n2, ']') = 2;
1824 if (inet_pton(AF_INET6, n2, &addr))
1829 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1830 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1833 if (ntype == IS_DNS) {
1834 len1 = strlen(name);
1835 domain = strchr(name, '.');
1837 len2 = len1 - (domain-name);
1841 for ( i=0, ret=0; ret >= 0; i++ ) {
1842 altnamesize = sizeof(altname);
1843 ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1844 altname, &altnamesize, NULL );
1845 if ( ret < 0 ) break;
1848 if ( altnamesize == 0 ) continue;
1850 if ( ret == GNUTLS_SAN_DNSNAME ) {
1851 if (ntype != IS_DNS) continue;
1853 /* Is this an exact match? */
1854 if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1858 /* Is this a wildcard match? */
1859 if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1860 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1864 } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1865 if (ntype == IS_DNS) continue;
1867 #ifdef LDAP_PF_INET6
1868 if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1872 if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1875 if (!memcmp(altname, &addr, altnamesize)) {
1883 altnamesize = sizeof(altname);
1884 ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1885 0, 0, altname, &altnamesize );
1887 Debug( LDAP_DEBUG_ANY,
1888 "TLS: unable to get common name from peer certificate.\n",
1890 ret = LDAP_CONNECT_ERROR;
1891 if ( ld->ld_error ) {
1892 LDAP_FREE( ld->ld_error );
1894 ld->ld_error = LDAP_STRDUP(
1895 _("TLS: unable to get CN from peer certificate"));
1898 ret = LDAP_LOCAL_ERROR;
1899 if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1902 } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1903 /* Is this a wildcard match? */
1905 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1911 if( ret == LDAP_LOCAL_ERROR ) {
1912 altname[altnamesize] = '\0';
1913 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1914 "common name in certificate (%s).\n",
1916 ret = LDAP_CONNECT_ERROR;
1917 if ( ld->ld_error ) {
1918 LDAP_FREE( ld->ld_error );
1920 ld->ld_error = LDAP_STRDUP(
1921 _("TLS: hostname does not match CN in peer certificate"));
1924 gnutls_x509_crt_deinit( cert );
1928 #else /* !HAVE_GNUTLS */
1931 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1933 int i, ret = LDAP_LOCAL_ERROR;
1938 #ifdef LDAP_PF_INET6
1939 struct in6_addr addr;
1941 struct in_addr addr;
1944 if( ldap_int_hostname &&
1945 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1947 name = ldap_int_hostname;
1952 x = tls_get_cert((SSL *)s);
1954 Debug( LDAP_DEBUG_ANY,
1955 "TLS: unable to get peer certificate.\n",
1957 /* If this was a fatal condition, things would have
1958 * aborted long before now.
1960 return LDAP_SUCCESS;
1963 #ifdef LDAP_PF_INET6
1964 if (name[0] == '[' && strchr(name, ']')) {
1965 char *n2 = ldap_strdup(name+1);
1966 *strchr(n2, ']') = 2;
1967 if (inet_pton(AF_INET6, n2, &addr))
1972 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1973 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1976 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1979 STACK_OF(GENERAL_NAME) *alt;
1981 ex = X509_get_ext(x, i);
1982 alt = X509V3_EXT_d2i(ex);
1984 int n, len1 = 0, len2 = 0;
1985 char *domain = NULL;
1988 if (ntype == IS_DNS) {
1989 len1 = strlen(name);
1990 domain = strchr(name, '.');
1992 len2 = len1 - (domain-name);
1995 n = sk_GENERAL_NAME_num(alt);
1996 for (i=0; i<n; i++) {
1999 gn = sk_GENERAL_NAME_value(alt, i);
2000 if (gn->type == GEN_DNS) {
2001 if (ntype != IS_DNS) continue;
2003 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2004 sl = ASN1_STRING_length(gn->d.ia5);
2007 if (sl == 0) continue;
2009 /* Is this an exact match? */
2010 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
2014 /* Is this a wildcard match? */
2015 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
2016 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2021 } else if (gn->type == GEN_IPADD) {
2022 if (ntype == IS_DNS) continue;
2024 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2025 sl = ASN1_STRING_length(gn->d.ia5);
2027 #ifdef LDAP_PF_INET6
2028 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2032 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2035 if (!memcmp(sn, &addr, sl)) {
2041 GENERAL_NAMES_free(alt);
2042 if (i < n) { /* Found a match */
2048 if (ret != LDAP_SUCCESS) {
2053 xn = X509_get_subject_name(x);
2054 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2055 buf, sizeof(buf)) == -1)
2057 Debug( LDAP_DEBUG_ANY,
2058 "TLS: unable to get common name from peer certificate.\n",
2060 ret = LDAP_CONNECT_ERROR;
2061 if ( ld->ld_error ) {
2062 LDAP_FREE( ld->ld_error );
2064 ld->ld_error = LDAP_STRDUP(
2065 _("TLS: unable to get CN from peer certificate"));
2067 } else if (strcasecmp(name, buf) == 0 ) {
2070 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2071 char *domain = strchr(name, '.');
2077 dlen = sl - (domain-name);
2080 /* Is this a wildcard match? */
2081 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2087 if( ret == LDAP_LOCAL_ERROR ) {
2088 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2089 "common name in certificate (%s).\n",
2091 ret = LDAP_CONNECT_ERROR;
2092 if ( ld->ld_error ) {
2093 LDAP_FREE( ld->ld_error );
2095 ld->ld_error = LDAP_STRDUP(
2096 _("TLS: hostname does not match CN in peer certificate"));
2105 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2110 case LDAP_OPT_X_TLS_CACERTFILE:
2111 case LDAP_OPT_X_TLS_CACERTDIR:
2112 case LDAP_OPT_X_TLS_CERTFILE:
2113 case LDAP_OPT_X_TLS_KEYFILE:
2114 case LDAP_OPT_X_TLS_RANDOM_FILE:
2115 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2116 case LDAP_OPT_X_TLS_DHFILE:
2118 case LDAP_OPT_X_TLS_CRLFILE:
2120 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2122 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2123 case LDAP_OPT_X_TLS:
2125 if ( strcasecmp( arg, "never" ) == 0 ) {
2126 i = LDAP_OPT_X_TLS_NEVER ;
2128 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
2129 i = LDAP_OPT_X_TLS_DEMAND ;
2131 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
2132 i = LDAP_OPT_X_TLS_ALLOW ;
2134 } else if ( strcasecmp( arg, "try" ) == 0 ) {
2135 i = LDAP_OPT_X_TLS_TRY ;
2137 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2138 ( strcasecmp( arg, "on" ) == 0 ) ||
2139 ( strcasecmp( arg, "yes" ) == 0) ||
2140 ( strcasecmp( arg, "true" ) == 0 ) )
2142 i = LDAP_OPT_X_TLS_HARD ;
2146 return ldap_pvt_tls_set_option( ld, option, &i );
2149 #ifdef HAVE_OPENSSL_CRL
2150 case LDAP_OPT_X_TLS_CRLCHECK:
2152 if ( strcasecmp( arg, "none" ) == 0 ) {
2153 i = LDAP_OPT_X_TLS_CRL_NONE ;
2154 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
2155 i = LDAP_OPT_X_TLS_CRL_PEER ;
2156 } else if ( strcasecmp( arg, "all" ) == 0 ) {
2157 i = LDAP_OPT_X_TLS_CRL_ALL ;
2160 return ldap_pvt_tls_set_option( ld, option, &i );
2169 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2171 struct ldapoptions *lo;
2174 assert( LDAP_VALID( ld ) );
2176 if( !LDAP_VALID( ld ) ) {
2177 return LDAP_OPT_ERROR;
2180 lo = &ld->ld_options;
2183 /* Get pointer to global option structure */
2184 lo = LDAP_INT_GLOBAL_OPT();
2186 return LDAP_NO_MEMORY;
2191 case LDAP_OPT_X_TLS:
2192 *(int *)arg = lo->ldo_tls_mode;
2194 case LDAP_OPT_X_TLS_CTX:
2195 *(void **)arg = lo->ldo_tls_ctx;
2196 if ( lo->ldo_tls_ctx ) {
2197 tls_ctx_ref( lo->ldo_tls_ctx );
2200 case LDAP_OPT_X_TLS_CACERTFILE:
2201 *(char **)arg = lo->ldo_tls_cacertfile ?
2202 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2204 case LDAP_OPT_X_TLS_CACERTDIR:
2205 *(char **)arg = lo->ldo_tls_cacertdir ?
2206 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2208 case LDAP_OPT_X_TLS_CERTFILE:
2209 *(char **)arg = lo->ldo_tls_certfile ?
2210 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2212 case LDAP_OPT_X_TLS_KEYFILE:
2213 *(char **)arg = lo->ldo_tls_keyfile ?
2214 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2216 case LDAP_OPT_X_TLS_DHFILE:
2217 *(char **)arg = lo->ldo_tls_dhfile ?
2218 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2221 case LDAP_OPT_X_TLS_CRLFILE:
2222 *(char **)arg = lo->ldo_tls_crlfile ?
2223 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2226 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2227 *(int *)arg = lo->ldo_tls_require_cert;
2229 #ifdef HAVE_OPENSSL_CRL
2230 case LDAP_OPT_X_TLS_CRLCHECK:
2231 *(int *)arg = lo->ldo_tls_crlcheck;
2234 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2235 *(char **)arg = lo->ldo_tls_ciphersuite ?
2236 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2238 case LDAP_OPT_X_TLS_RANDOM_FILE:
2240 *(char **)arg = tls_opt_randfile ?
2241 LDAP_STRDUP( tls_opt_randfile ) : NULL;
2243 *(char **)arg = NULL;
2246 case LDAP_OPT_X_TLS_SSL_CTX: {
2249 LDAPConn *conn = ld->ld_defconn;
2250 if ( conn != NULL ) {
2251 Sockbuf *sb = conn->lconn_sb;
2252 retval = ldap_pvt_tls_sb_ctx( sb );
2255 *(void **)arg = retval;
2258 case LDAP_OPT_X_TLS_CONNECT_CB:
2259 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2261 case LDAP_OPT_X_TLS_CONNECT_ARG:
2262 *(void **)arg = lo->ldo_tls_connect_arg;
2271 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2273 struct ldapoptions *lo;
2276 assert( LDAP_VALID( ld ) );
2278 if( !LDAP_VALID( ld ) ) {
2279 return LDAP_OPT_ERROR;
2282 lo = &ld->ld_options;
2285 /* Get pointer to global option structure */
2286 lo = LDAP_INT_GLOBAL_OPT();
2288 return LDAP_NO_MEMORY;
2293 case LDAP_OPT_X_TLS:
2294 if ( !arg ) return -1;
2296 switch( *(int *) arg ) {
2297 case LDAP_OPT_X_TLS_NEVER:
2298 case LDAP_OPT_X_TLS_DEMAND:
2299 case LDAP_OPT_X_TLS_ALLOW:
2300 case LDAP_OPT_X_TLS_TRY:
2301 case LDAP_OPT_X_TLS_HARD:
2303 lo->ldo_tls_mode = *(int *)arg;
2310 case LDAP_OPT_X_TLS_CTX:
2311 if ( lo->ldo_tls_ctx )
2312 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2313 lo->ldo_tls_ctx = arg;
2314 tls_ctx_ref( lo->ldo_tls_ctx );
2316 case LDAP_OPT_X_TLS_CONNECT_CB:
2317 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2319 case LDAP_OPT_X_TLS_CONNECT_ARG:
2320 lo->ldo_tls_connect_arg = arg;
2322 case LDAP_OPT_X_TLS_CACERTFILE:
2323 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2324 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2326 case LDAP_OPT_X_TLS_CACERTDIR:
2327 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2328 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2330 case LDAP_OPT_X_TLS_CERTFILE:
2331 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2332 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2334 case LDAP_OPT_X_TLS_KEYFILE:
2335 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2336 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2338 case LDAP_OPT_X_TLS_DHFILE:
2339 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2340 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2343 case LDAP_OPT_X_TLS_CRLFILE:
2344 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2345 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2348 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2349 if ( !arg ) return -1;
2350 switch( *(int *) arg ) {
2351 case LDAP_OPT_X_TLS_NEVER:
2352 case LDAP_OPT_X_TLS_DEMAND:
2353 case LDAP_OPT_X_TLS_ALLOW:
2354 case LDAP_OPT_X_TLS_TRY:
2355 case LDAP_OPT_X_TLS_HARD:
2356 lo->ldo_tls_require_cert = * (int *) arg;
2360 #ifdef HAVE_OPENSSL_CRL
2361 case LDAP_OPT_X_TLS_CRLCHECK:
2362 if ( !arg ) return -1;
2363 switch( *(int *) arg ) {
2364 case LDAP_OPT_X_TLS_CRL_NONE:
2365 case LDAP_OPT_X_TLS_CRL_PEER:
2366 case LDAP_OPT_X_TLS_CRL_ALL:
2367 lo->ldo_tls_crlcheck = * (int *) arg;
2372 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2373 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2374 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2377 case LDAP_OPT_X_TLS_RANDOM_FILE:
2381 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2382 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2386 case LDAP_OPT_X_TLS_NEWCTX:
2387 if ( !arg ) return -1;
2388 if ( lo->ldo_tls_ctx )
2389 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2390 lo->ldo_tls_ctx = NULL;
2391 return ldap_int_tls_init_ctx( lo, *(int *)arg );
2399 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2401 Sockbuf *sb = conn->lconn_sb;
2406 host = srv->lud_host;
2408 host = conn->lconn_server->lud_host;
2411 /* avoid NULL host */
2412 if( host == NULL ) {
2416 (void) ldap_pvt_tls_init();
2419 * Fortunately, the lib uses blocking io...
2421 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2422 ld->ld_errno = LDAP_CONNECT_ERROR;
2423 return (ld->ld_errno);
2426 ssl = ldap_pvt_tls_sb_ctx( sb );
2427 assert( ssl != NULL );
2430 * compare host with name(s) in certificate
2432 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2433 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2434 if (ld->ld_errno != LDAP_SUCCESS) {
2435 return ld->ld_errno;
2439 return LDAP_SUCCESS;
2443 /* Derived from openssl/apps/s_cb.c */
2445 tls_info_cb( const SSL *ssl, int where, int ret )
2449 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2451 w = where & ~SSL_ST_MASK;
2452 if ( w & SSL_ST_CONNECT ) {
2454 } else if ( w & SSL_ST_ACCEPT ) {
2462 state = LDAP_STRDUP( state );
2466 if ( where & SSL_CB_LOOP ) {
2467 Debug( LDAP_DEBUG_TRACE,
2468 "TLS trace: %s:%s\n",
2471 } else if ( where & SSL_CB_ALERT ) {
2472 char *atype = (char *) SSL_alert_type_string_long( ret );
2473 char *adesc = (char *) SSL_alert_desc_string_long( ret );
2474 op = ( where & SSL_CB_READ ) ? "read" : "write";
2477 atype = LDAP_STRDUP( atype );
2481 adesc = LDAP_STRDUP( adesc );
2485 Debug( LDAP_DEBUG_TRACE,
2486 "TLS trace: SSL3 alert %s:%s:%s\n",
2489 if ( atype ) LDAP_FREE( atype );
2490 if ( adesc ) LDAP_FREE( adesc );
2492 } else if ( where & SSL_CB_EXIT ) {
2494 Debug( LDAP_DEBUG_TRACE,
2495 "TLS trace: %s:failed in %s\n",
2497 } else if ( ret < 0 ) {
2498 Debug( LDAP_DEBUG_TRACE,
2499 "TLS trace: %s:error in %s\n",
2504 if ( state ) LDAP_FREE( state );
2509 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2518 char *certerr = NULL;
2520 cert = X509_STORE_CTX_get_current_cert( ctx );
2521 errnum = X509_STORE_CTX_get_error( ctx );
2522 errdepth = X509_STORE_CTX_get_error_depth( ctx );
2525 * X509_get_*_name return pointers to the internal copies of
2526 * those things requested. So do not free them.
2528 subject = X509_get_subject_name( cert );
2529 issuer = X509_get_issuer_name( cert );
2530 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2531 sname = X509_NAME_oneline( subject, NULL, 0 );
2532 iname = X509_NAME_oneline( issuer, NULL, 0 );
2533 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2535 if ( sname ) __etoa( sname );
2536 if ( iname ) __etoa( iname );
2538 certerr = LDAP_STRDUP( certerr );
2542 Debug( LDAP_DEBUG_TRACE,
2543 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
2545 sname ? sname : "-unknown-" );
2546 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2548 Debug( LDAP_DEBUG_ANY,
2549 "TLS certificate verification: Error, %s\n",
2553 CRYPTO_free ( sname );
2555 CRYPTO_free ( iname );
2557 if ( certerr ) LDAP_FREE( certerr );
2563 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2565 (void) tls_verify_cb( ok, ctx );
2569 /* Inspired by ERR_print_errors in OpenSSL */
2571 tls_report_error( void )
2578 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2579 ERR_error_string_n( l, buf, sizeof( buf ) );
2582 file = LDAP_STRDUP( file );
2583 __etoa( (char *)file );
2587 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2590 if ( file ) LDAP_FREE( (void *)file );
2596 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2600 /* FIXME: Pregenerate the key on startup */
2601 /* FIXME: Who frees the key? */
2602 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2605 Debug( LDAP_DEBUG_ANY,
2606 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
2607 key_length, is_export ? "export" : "domestic", 0 );
2614 tls_seed_PRNG( const char *randfile )
2616 #ifndef URANDOM_DEVICE
2617 /* no /dev/urandom (or equiv) */
2619 char buffer[MAXPATHLEN];
2621 if (randfile == NULL) {
2622 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2623 * If $HOME is not set or buffer too small to hold the pathname,
2624 * an error occurs. - From RAND_file_name() man page.
2625 * The fact is that when $HOME is NULL, .rnd is used.
2627 randfile = RAND_file_name( buffer, sizeof( buffer ) );
2629 } else if (RAND_egd(randfile) > 0) {
2634 if (randfile == NULL) {
2635 Debug( LDAP_DEBUG_ANY,
2636 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2641 total = RAND_load_file(randfile, -1);
2643 if (RAND_status() == 0) {
2644 Debug( LDAP_DEBUG_ANY,
2645 "TLS: PRNG not been seeded with enough data\n",
2650 /* assume if there was enough bits to seed that it's okay
2651 * to write derived bits to the file
2653 RAND_write_file(randfile);
2667 /* From the OpenSSL 0.9.7 distro */
2668 static const char dhpem512[] =
2669 "-----BEGIN DH PARAMETERS-----\n\
2670 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2671 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2672 -----END DH PARAMETERS-----\n";
2674 static const char dhpem1024[] =
2675 "-----BEGIN DH PARAMETERS-----\n\
2676 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2677 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2678 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2679 -----END DH PARAMETERS-----\n";
2681 static const char dhpem2048[] =
2682 "-----BEGIN DH PARAMETERS-----\n\
2683 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2684 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2685 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2686 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2687 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2688 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2689 -----END DH PARAMETERS-----\n";
2691 static const char dhpem4096[] =
2692 "-----BEGIN DH PARAMETERS-----\n\
2693 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2694 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2695 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2696 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2697 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2698 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2699 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2700 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2701 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2702 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2703 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2704 -----END DH PARAMETERS-----\n";
2706 static const struct dhinfo dhpem[] = {
2707 { 512, dhpem512, sizeof(dhpem512) },
2708 { 1024, dhpem1024, sizeof(dhpem1024) },
2709 { 2048, dhpem2048, sizeof(dhpem2048) },
2710 { 4096, dhpem4096, sizeof(dhpem4096) },
2715 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2717 struct dhplist *p = NULL;
2722 /* Do we have params of this length already? */
2723 #ifdef LDAP_R_COMPILE
2724 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2726 for ( p = dhparams; p; p=p->next ) {
2727 if ( p->keylength == key_length ) {
2728 #ifdef LDAP_R_COMPILE
2729 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2735 /* No - check for hardcoded params */
2737 for (i=0; dhpem[i].keylength; i++) {
2738 if ( dhpem[i].keylength == key_length ) {
2739 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2745 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2749 /* Generating on the fly is expensive/slow... */
2751 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2754 p = LDAP_MALLOC( sizeof(struct dhplist) );
2756 p->keylength = key_length;
2763 #ifdef LDAP_R_COMPILE
2764 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2770 #endif /* HAVE_OPENSSL */
2773 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2778 if (HAS_TLS( sb )) {
2779 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2788 ldap_pvt_tls_get_strength( void *s )
2793 c = SSL_get_current_cipher((SSL *)s);
2794 return SSL_CIPHER_get_bits(c, NULL);
2795 #elif defined(HAVE_GNUTLS)
2796 tls_session *session = s;
2797 gnutls_cipher_algorithm_t c;
2799 c = gnutls_cipher_get( session->session );
2800 return gnutls_cipher_get_key_size( c );
2808 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2811 struct berval der_dn;
2817 x = SSL_get_certificate((SSL *)s);
2819 if (!x) return LDAP_INVALID_CREDENTIALS;
2821 xn = X509_get_subject_name(x);
2822 der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2823 der_dn.bv_val = xn->bytes->data;
2824 #elif defined(HAVE_GNUTLS)
2825 tls_session *session = s;
2826 const gnutls_datum_t *x;
2829 x = gnutls_certificate_get_ours( session->session );
2831 if (!x) return LDAP_INVALID_CREDENTIALS;
2833 bv.bv_val = x->data;
2834 bv.bv_len = x->size;
2836 x509_cert_get_dn( &bv, &der_dn, 1 );
2838 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2840 #else /* !HAVE_TLS */
2841 return LDAP_NOT_SUPPORTED;
2846 ldap_start_tls( LDAP *ld,
2847 LDAPControl **serverctrls,
2848 LDAPControl **clientctrls,
2851 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2852 NULL, serverctrls, clientctrls, msgidp );
2856 ldap_install_tls( LDAP *ld )
2859 return LDAP_NOT_SUPPORTED;
2861 if ( ldap_tls_inplace( ld ) ) {
2862 return LDAP_LOCAL_ERROR;
2865 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2870 ldap_start_tls_s ( LDAP *ld,
2871 LDAPControl **serverctrls,
2872 LDAPControl **clientctrls )
2875 return LDAP_NOT_SUPPORTED;
2878 char *rspoid = NULL;
2879 struct berval *rspdata = NULL;
2881 /* XXYYZ: this initiates operation only on default connection! */
2883 if ( ldap_tls_inplace( ld ) ) {
2884 return LDAP_LOCAL_ERROR;
2887 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2888 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2890 if ( rspoid != NULL ) {
2894 if ( rspdata != NULL ) {
2895 ber_bvfree( rspdata );
2898 if ( rc == LDAP_SUCCESS ) {
2899 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2906 /* These tags probably all belong in lber.h, but they're
2907 * not normally encountered when processing LDAP, so maybe
2908 * they belong somewhere else instead.
2911 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2913 /* Tags for string types used in a DirectoryString.
2915 * Note that IA5string is not one of the defined choices for
2916 * DirectoryString in X.520, but it gets used for email AVAs.
2918 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2919 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2920 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2921 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2922 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2923 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2926 find_oid( struct berval *oid )
2930 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2931 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2932 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2938 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2939 * x509_name must be raw DER. If func is non-NULL, the
2940 * constructed DN will use numeric OIDs to identify attributeTypes,
2941 * and the func() will be invoked to rewrite the DN with the given
2944 * Otherwise the DN will use shortNames from a hardcoded table.
2947 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2952 LDAPAVA *newAVA, *baseAVA;
2953 BerElementBuffer berbuf;
2954 BerElement *ber = (BerElement *)&berbuf;
2955 char oids[8192], *oidptr = oids, *oidbuf = NULL;
2957 char *dn_end, *rdn_end;
2958 int i, navas, nrdns, rc = LDAP_SUCCESS;
2959 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2965 struct berval Oid, Val, oid2, *in = x509_name;
2967 assert( bv != NULL );
2975 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2976 * An AVA is a SEQUENCE of attr and value.
2977 * Count the number of AVAs and RDNs
2979 ber_init2( ber, in, LBER_USE_DER );
2980 tag = ber_peek_tag( ber, &len );
2981 if ( tag != LBER_SEQUENCE )
2982 return LDAP_DECODING_ERROR;
2984 for ( tag = ber_first_element( ber, &len, &dn_end );
2986 tag = ber_next_element( ber, &len, dn_end )) {
2988 for ( tag = ber_first_element( ber, &len, &rdn_end );
2989 tag == LBER_SEQUENCE;
2990 tag = ber_next_element( ber, &len, rdn_end )) {
2991 tag = ber_skip_tag( ber, &len );
2992 ber_skip_data( ber, len );
2997 /* Allocate the DN/RDN/AVA stuff as a single block */
2998 dnsize = sizeof(LDAPRDN) * (nrdns+1);
2999 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
3000 dnsize += sizeof(LDAPAVA) * navas;
3001 if (dnsize > sizeof(ptrs)) {
3002 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
3003 if ( newDN == NULL )
3004 return LDAP_NO_MEMORY;
3006 newDN = (LDAPDN)(char *)ptrs;
3009 newDN[nrdns] = NULL;
3010 newRDN = (LDAPRDN)(newDN + nrdns+1);
3011 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
3014 /* Rewind and start extracting */
3017 tag = ber_first_element( ber, &len, &dn_end );
3018 for ( i = nrdns - 1; i >= 0; i-- ) {
3021 for ( tag = ber_first_element( ber, &len, &rdn_end );
3022 tag == LBER_SEQUENCE;
3023 tag = ber_next_element( ber, &len, rdn_end )) {
3026 tag = ber_skip_tag( ber, &len );
3027 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
3028 if ( tag != LBER_TAG_OID ) {
3029 rc = LDAP_DECODING_ERROR;
3033 oid2.bv_val = oidptr;
3034 oid2.bv_len = oidrem;
3035 ber_decode_oid( &Oid, &oid2 );
3036 oidname = find_oid( &oid2 );
3038 newAVA->la_attr = oid2;
3039 oidptr += oid2.bv_len + 1;
3040 oidrem -= oid2.bv_len + 1;
3042 /* Running out of OID buffer space? */
3044 if ( oidsize == 0 ) {
3045 oidsize = sizeof(oids) * 2;
3047 oidbuf = LDAP_MALLOC( oidsize );
3048 if ( oidbuf == NULL ) goto nomem;
3052 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3053 if ( oidbuf == NULL ) goto nomem;
3054 /* Buffer moved! Fix AVA pointers */
3055 if ( old != oidbuf ) {
3057 long dif = oidbuf - old;
3059 for (a=baseAVA; a<=newAVA; a++){
3060 if (a->la_attr.bv_val >= old &&
3061 a->la_attr.bv_val <= (old + oidsize))
3062 a->la_attr.bv_val += dif;
3065 oidptr = oidbuf + oidsize - oidrem;
3072 newAVA->la_attr = oidname->oid;
3074 newAVA->la_attr = oidname->name;
3077 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
3079 case LBER_TAG_UNIVERSAL:
3080 /* This uses 32-bit ISO 10646-1 */
3081 csize = 4; goto to_utf8;
3083 /* This uses 16-bit ISO 10646-1 */
3084 csize = 2; goto to_utf8;
3085 case LBER_TAG_TELETEX:
3086 /* This uses 8-bit, assume ISO 8859-1 */
3088 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3089 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3090 if (rc != LDAP_SUCCESS) goto nomem;
3091 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3094 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3095 /* This is already in UTF-8 encoding */
3097 case LBER_TAG_PRINTABLE:
3098 /* These are always 7-bit strings */
3099 newAVA->la_value = Val;
3103 newAVA->la_private = NULL;
3104 newAVA->la_flags = LDAP_AVA_STRING;
3108 tag = ber_next_element( ber, &len, dn_end );
3112 rc = func( newDN, flags, NULL );
3113 if ( rc != LDAP_SUCCESS )
3117 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3120 for (;baseAVA < newAVA; baseAVA++) {
3121 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3122 LDAP_FREE( baseAVA->la_attr.bv_val );
3123 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3124 LDAP_FREE( baseAVA->la_value.bv_val );
3128 LDAP_FREE( oidbuf );
3129 if ( newDN != (LDAPDN)(char *) ptrs )