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 the ldap_pvt_thread_t type is too large */
410 enum { ok = sizeof( ldap_pvt_thread_t ) <= sizeof( unsigned long ) };
411 typedef struct { int dummy: ok ? 1 : -1; } Check[ok ? 1 : -1];
413 return (unsigned long) ldap_pvt_thread_self();
416 static void tls_init_threads( void )
420 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
421 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
423 CRYPTO_set_locking_callback( tls_locking_cb );
424 CRYPTO_set_id_callback( tls_thread_self );
426 #endif /* LDAP_R_COMPILE */
429 ldap_pvt_tls_ctx_free ( void *c )
436 tls_ctx_new( struct ldapoptions *lo )
438 return SSL_CTX_new( SSLv23_method() );
442 tls_ctx_ref( void *c )
445 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
449 tls_session_new( tls_ctx *ctx, int is_server )
451 return SSL_new( ctx );
454 #define tls_session_connect( ssl ) SSL_connect( ssl )
455 #define tls_session_accept( ssl ) SSL_accept( ssl )
457 static STACK_OF(X509_NAME) *
458 get_ca_list( char * bundle, char * dir )
460 STACK_OF(X509_NAME) *ca_list = NULL;
463 ca_list = SSL_load_client_CA_file( bundle );
465 #if defined(HAVE_DIRENT_H) || defined(dirent)
470 ca_list = sk_X509_NAME_new_null();
473 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
475 sk_X509_NAME_free( ca_list );
483 #endif /* HAVE_GNUTLS */
485 #ifdef LDAP_R_COMPILE
487 * an extra mutex for the default ctx.
489 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
493 ldap_int_tls_destroy( struct ldapoptions *lo )
495 if ( lo->ldo_tls_ctx ) {
496 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
497 lo->ldo_tls_ctx = NULL;
500 if ( lo->ldo_tls_certfile ) {
501 LDAP_FREE( lo->ldo_tls_certfile );
502 lo->ldo_tls_certfile = NULL;
504 if ( lo->ldo_tls_keyfile ) {
505 LDAP_FREE( lo->ldo_tls_keyfile );
506 lo->ldo_tls_keyfile = NULL;
508 if ( lo->ldo_tls_dhfile ) {
509 LDAP_FREE( lo->ldo_tls_dhfile );
510 lo->ldo_tls_dhfile = NULL;
512 if ( lo->ldo_tls_cacertfile ) {
513 LDAP_FREE( lo->ldo_tls_cacertfile );
514 lo->ldo_tls_cacertfile = NULL;
516 if ( lo->ldo_tls_cacertdir ) {
517 LDAP_FREE( lo->ldo_tls_cacertdir );
518 lo->ldo_tls_cacertdir = NULL;
520 if ( lo->ldo_tls_ciphersuite ) {
521 LDAP_FREE( lo->ldo_tls_ciphersuite );
522 lo->ldo_tls_ciphersuite = NULL;
525 if ( lo->ldo_tls_crlfile ) {
526 LDAP_FREE( lo->ldo_tls_crlfile );
527 lo->ldo_tls_crlfile = NULL;
533 * Tear down the TLS subsystem. Should only be called once.
536 ldap_pvt_tls_destroy( void )
538 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
540 ldap_int_tls_destroy( lo );
543 LDAP_FREE( ciphers );
546 gnutls_global_deinit();
552 if ( tls_opt_randfile ) {
553 LDAP_FREE( tls_opt_randfile );
554 tls_opt_randfile = NULL;
560 * Initialize TLS subsystem. Should be called only once.
563 ldap_pvt_tls_init( void )
565 static int tls_initialized = 0;
567 if ( tls_initialized++ ) return 0;
569 #ifdef LDAP_R_COMPILE
571 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
575 gnutls_global_init ();
577 /* GNUtls cipher suite handling: The library ought to parse suite
578 * names for us, but it doesn't. It will return a list of suite names
579 * that it supports, so we can do parsing ourselves. It ought to tell
580 * us how long the list is, but it doesn't do that either, so we just
581 * have to count it manually...
585 tls_cipher_suite *ptr, tmp;
588 while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
589 &tmp.mac, &tmp.version ))
594 ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
597 for ( i=0; i<n_ciphers; i++ ) {
598 ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
599 &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
600 &ciphers[i].version );
604 #else /* !HAVE_GNUTLS */
608 char *file = LDAP_STRDUP( tls_opt_randfile );
609 if ( file ) __atoe( file );
610 (void) tls_seed_PRNG( file );
614 (void) tls_seed_PRNG( tls_opt_randfile );
617 SSL_load_error_strings();
618 SSLeay_add_ssl_algorithms();
620 /* FIXME: mod_ssl does this */
621 X509V3_add_standard_extensions();
623 #endif /* HAVE_GNUTLS */
628 * initialize a new TLS context
631 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
634 char *ciphersuite = lo->ldo_tls_ciphersuite;
635 char *cacertfile = lo->ldo_tls_cacertfile;
636 char *cacertdir = lo->ldo_tls_cacertdir;
637 char *certfile = lo->ldo_tls_certfile;
638 char *keyfile = lo->ldo_tls_keyfile;
640 char *crlfile = lo->ldo_tls_crlfile;
642 char *dhfile = lo->ldo_tls_dhfile;
645 if ( lo->ldo_tls_ctx )
650 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
651 /* minimum configuration not provided */
652 return LDAP_NOT_SUPPORTED;
656 /* This ASCII/EBCDIC handling is a real pain! */
658 ciphersuite = LDAP_STRDUP( ciphersuite );
659 __atoe( ciphersuite );
662 cacertfile = LDAP_STRDUP( cacertfile );
663 __atoe( cacertfile );
666 certfile = LDAP_STRDUP( certfile );
670 keyfile = LDAP_STRDUP( keyfile );
675 crlfile = LDAP_STRDUP( crlfile );
680 cacertdir = LDAP_STRDUP( cacertdir );
684 dhfile = LDAP_STRDUP( dhfile );
689 lo->ldo_tls_ctx = tls_ctx_new( lo );
690 if ( lo->ldo_tls_ctx == NULL ) {
692 Debug( LDAP_DEBUG_ANY,
693 "TLS: could not allocate default ctx.\n",
696 Debug( LDAP_DEBUG_ANY,
697 "TLS: could not allocate default ctx (%lu).\n",
698 ERR_peek_error(),0,0);
705 if ( lo->ldo_tls_ciphersuite &&
706 tls_parse_ciphers( lo->ldo_tls_ctx,
708 Debug( LDAP_DEBUG_ANY,
709 "TLS: could not set cipher list %s.\n",
710 lo->ldo_tls_ciphersuite, 0, 0 );
715 if (lo->ldo_tls_cacertdir != NULL) {
716 Debug( LDAP_DEBUG_ANY,
717 "TLS: warning: cacertdir not implemented for gnutls\n",
721 if (lo->ldo_tls_cacertfile != NULL) {
722 rc = gnutls_certificate_set_x509_trust_file(
723 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
725 GNUTLS_X509_FMT_PEM );
726 if ( rc < 0 ) goto error_exit;
729 if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
730 rc = gnutls_certificate_set_x509_key_file(
731 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
734 GNUTLS_X509_FMT_PEM );
735 if ( rc ) goto error_exit;
736 } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
737 Debug( LDAP_DEBUG_ANY,
738 "TLS: only one of certfile and keyfile specified\n",
744 if ( lo->ldo_tls_dhfile ) {
745 Debug( LDAP_DEBUG_ANY,
746 "TLS: warning: ignoring dhfile\n",
750 if ( lo->ldo_tls_crlfile ) {
751 rc = gnutls_certificate_set_x509_crl_file(
752 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
754 GNUTLS_X509_FMT_PEM );
755 if ( rc < 0 ) goto error_exit;
758 gnutls_dh_params_init (&((tls_ctx*)
759 lo->ldo_tls_ctx)->dh_params);
760 gnutls_dh_params_generate2 (((tls_ctx*)
761 lo->ldo_tls_ctx)->dh_params,
765 #else /* !HAVE_GNUTLS */
768 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
769 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
772 if ( lo->ldo_tls_ciphersuite &&
773 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
775 Debug( LDAP_DEBUG_ANY,
776 "TLS: could not set cipher list %s.\n",
777 lo->ldo_tls_ciphersuite, 0, 0 );
783 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
784 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
785 cacertfile, cacertdir ) ||
786 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
788 Debug( LDAP_DEBUG_ANY, "TLS: "
789 "could not load verify locations (file:`%s',dir:`%s').\n",
790 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
791 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
799 STACK_OF(X509_NAME) *calist;
800 /* List of CA names to send to a client */
801 calist = get_ca_list( cacertfile, cacertdir );
803 Debug( LDAP_DEBUG_ANY, "TLS: "
804 "could not load client CA list (file:`%s',dir:`%s').\n",
805 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
806 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
813 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
817 if ( lo->ldo_tls_certfile &&
818 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
819 certfile, SSL_FILETYPE_PEM ) )
821 Debug( LDAP_DEBUG_ANY,
822 "TLS: could not use certificate `%s'.\n",
823 lo->ldo_tls_certfile,0,0);
829 /* Key validity is checked automatically if cert has already been set */
830 if ( lo->ldo_tls_keyfile &&
831 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
832 keyfile, SSL_FILETYPE_PEM ) )
834 Debug( LDAP_DEBUG_ANY,
835 "TLS: could not use key file `%s'.\n",
836 lo->ldo_tls_keyfile,0,0);
842 if ( lo->ldo_tls_dhfile ) {
847 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
848 Debug( LDAP_DEBUG_ANY,
849 "TLS: could not use DH parameters file `%s'.\n",
850 lo->ldo_tls_dhfile,0,0);
855 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
856 p = LDAP_MALLOC( sizeof(dhplist) );
858 p->keylength = DH_size( dh ) * 8;
867 if ( tls_opt_trace ) {
868 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
872 if ( lo->ldo_tls_require_cert ) {
874 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
875 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
876 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
880 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
881 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
882 tls_verify_ok : tls_verify_cb );
883 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
884 if ( lo->ldo_tls_dhfile ) {
885 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
887 #ifdef HAVE_OPENSSL_CRL
888 if ( lo->ldo_tls_crlcheck ) {
889 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
890 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
891 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
892 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
893 X509_STORE_set_flags( x509_s,
894 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
899 #endif /* HAVE_GNUTLS */
902 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
903 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
904 lo->ldo_tls_ctx = NULL;
907 LDAP_FREE( ciphersuite );
908 LDAP_FREE( cacertfile );
909 LDAP_FREE( certfile );
910 LDAP_FREE( keyfile );
912 LDAP_FREE( crlfile );
914 LDAP_FREE( cacertdir );
922 * initialize the default context
925 ldap_pvt_tls_init_def_ctx( int is_server )
927 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
929 #ifdef LDAP_R_COMPILE
930 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
932 rc = ldap_int_tls_init_ctx( lo, is_server );
933 #ifdef LDAP_R_COMPILE
934 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
940 alloc_handle( void *ctx_arg, int is_server )
948 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
949 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
950 ctx = lo->ldo_tls_ctx;
953 ssl = tls_session_new( ctx, is_server );
955 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
962 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
964 sb->sb_trans_needs_read = 0;
965 sb->sb_trans_needs_write = 0;
968 if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
971 switch (gnutls_record_get_direction (ssl->session)) {
973 sb->sb_trans_needs_read = 1;
976 sb->sb_trans_needs_write = 1;
979 #else /* !HAVE_GNUTLS */
980 rc = SSL_get_error(ssl, rc);
981 if (rc == SSL_ERROR_WANT_READ) {
982 sb->sb_trans_needs_read = 1;
985 } else if (rc == SSL_ERROR_WANT_WRITE) {
986 sb->sb_trans_needs_write = 1;
989 } else if (rc == SSL_ERROR_WANT_CONNECT) {
992 #endif /* HAVE_GNUTLS */
997 * TLS support for LBER Sockbufs
1002 Sockbuf_IO_Desc *sbiod;
1008 sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
1012 if ( buf == NULL || len <= 0 ) return 0;
1014 p = (struct tls_data *)ptr;
1016 if ( p == NULL || p->sbiod == NULL ) {
1020 return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1024 sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1028 if ( buf == NULL || len <= 0 ) return 0;
1030 p = (struct tls_data *)ptr;
1032 if ( p == NULL || p->sbiod == NULL ) {
1036 return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1040 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1043 tls_session *session = arg;
1045 assert( sbiod != NULL );
1047 p = LBER_MALLOC( sizeof( *p ) );
1052 gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1053 gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1054 gnutls_transport_set_push_function( session->session, sb_gtls_send );
1057 sbiod->sbiod_pvt = p;
1062 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1066 assert( sbiod != NULL );
1067 assert( sbiod->sbiod_pvt != NULL );
1069 p = (struct tls_data *)sbiod->sbiod_pvt;
1070 gnutls_deinit ( p->ssl->session );
1071 LBER_FREE( p->ssl );
1072 LBER_FREE( sbiod->sbiod_pvt );
1073 sbiod->sbiod_pvt = NULL;
1078 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1082 assert( sbiod != NULL );
1083 assert( sbiod->sbiod_pvt != NULL );
1085 p = (struct tls_data *)sbiod->sbiod_pvt;
1086 gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1091 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1095 assert( sbiod != NULL );
1096 assert( sbiod->sbiod_pvt != NULL );
1098 p = (struct tls_data *)sbiod->sbiod_pvt;
1100 if ( opt == LBER_SB_OPT_GET_SSL ) {
1101 *((tls_session **)arg) = p->ssl;
1104 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1105 if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1110 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1114 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1120 assert( sbiod != NULL );
1121 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1123 p = (struct tls_data *)sbiod->sbiod_pvt;
1125 ret = gnutls_record_recv ( p->ssl->session, buf, len );
1127 case GNUTLS_E_INTERRUPTED:
1128 case GNUTLS_E_AGAIN:
1129 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1130 sock_errset(EWOULDBLOCK);
1133 case GNUTLS_E_REHANDSHAKE:
1134 for ( ret = gnutls_handshake ( p->ssl->session );
1135 ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1136 ret = gnutls_handshake ( p->ssl->session ) );
1137 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1141 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1147 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1153 assert( sbiod != NULL );
1154 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1156 p = (struct tls_data *)sbiod->sbiod_pvt;
1158 ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1160 if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1161 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1162 sock_errset(EWOULDBLOCK);
1165 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1170 #else /* !HAVE_GNUTLS */
1173 sb_tls_bio_create( BIO *b ) {
1182 sb_tls_bio_destroy( BIO *b )
1184 if ( b == NULL ) return 0;
1186 b->ptr = NULL; /* sb_tls_remove() will free it */
1193 sb_tls_bio_read( BIO *b, char *buf, int len )
1198 if ( buf == NULL || len <= 0 ) return 0;
1200 p = (struct tls_data *)b->ptr;
1202 if ( p == NULL || p->sbiod == NULL ) {
1206 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1208 BIO_clear_retry_flags( b );
1210 int err = sock_errno();
1211 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1212 BIO_set_retry_read( b );
1220 sb_tls_bio_write( BIO *b, const char *buf, int len )
1225 if ( buf == NULL || len <= 0 ) return 0;
1227 p = (struct tls_data *)b->ptr;
1229 if ( p == NULL || p->sbiod == NULL ) {
1233 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1235 BIO_clear_retry_flags( b );
1237 int err = sock_errno();
1238 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1239 BIO_set_retry_write( b );
1247 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1249 if ( cmd == BIO_CTRL_FLUSH ) {
1250 /* The OpenSSL library needs this */
1257 sb_tls_bio_gets( BIO *b, char *buf, int len )
1263 sb_tls_bio_puts( BIO *b, const char *str )
1265 return sb_tls_bio_write( b, str, strlen( str ) );
1268 static BIO_METHOD sb_tls_bio_method =
1270 ( 100 | 0x400 ), /* it's a source/sink BIO */
1282 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1287 assert( sbiod != NULL );
1289 p = LBER_MALLOC( sizeof( *p ) );
1294 p->ssl = (SSL *)arg;
1296 bio = BIO_new( &sb_tls_bio_method );
1297 bio->ptr = (void *)p;
1298 SSL_set_bio( p->ssl, bio, bio );
1299 sbiod->sbiod_pvt = p;
1304 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1308 assert( sbiod != NULL );
1309 assert( sbiod->sbiod_pvt != NULL );
1311 p = (struct tls_data *)sbiod->sbiod_pvt;
1313 LBER_FREE( sbiod->sbiod_pvt );
1314 sbiod->sbiod_pvt = NULL;
1319 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1323 assert( sbiod != NULL );
1324 assert( sbiod->sbiod_pvt != NULL );
1326 p = (struct tls_data *)sbiod->sbiod_pvt;
1327 SSL_shutdown( p->ssl );
1332 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1336 assert( sbiod != NULL );
1337 assert( sbiod->sbiod_pvt != NULL );
1339 p = (struct tls_data *)sbiod->sbiod_pvt;
1341 if ( opt == LBER_SB_OPT_GET_SSL ) {
1342 *((SSL **)arg) = p->ssl;
1345 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1346 if( SSL_pending( p->ssl ) > 0 ) {
1351 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1355 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1361 assert( sbiod != NULL );
1362 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1364 p = (struct tls_data *)sbiod->sbiod_pvt;
1366 ret = SSL_read( p->ssl, (char *)buf, len );
1368 errno = WSAGetLastError();
1370 err = SSL_get_error( p->ssl, ret );
1371 if (err == SSL_ERROR_WANT_READ ) {
1372 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1373 sock_errset(EWOULDBLOCK);
1376 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1381 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1387 assert( sbiod != NULL );
1388 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1390 p = (struct tls_data *)sbiod->sbiod_pvt;
1392 ret = SSL_write( p->ssl, (char *)buf, len );
1394 errno = WSAGetLastError();
1396 err = SSL_get_error( p->ssl, ret );
1397 if (err == SSL_ERROR_WANT_WRITE ) {
1398 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1399 sock_errset(EWOULDBLOCK);
1402 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1409 static Sockbuf_IO sb_tls_sbio =
1411 sb_tls_setup, /* sbi_setup */
1412 sb_tls_remove, /* sbi_remove */
1413 sb_tls_ctrl, /* sbi_ctrl */
1414 sb_tls_read, /* sbi_read */
1415 sb_tls_write, /* sbi_write */
1416 sb_tls_close /* sbi_close */
1420 /* Certs are not automatically varified during the handshake */
1422 tls_cert_verify( tls_session *ssl )
1424 unsigned int status = 0;
1426 time_t now = time(0);
1428 err = gnutls_certificate_verify_peers2( ssl->session, &status );
1430 Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1435 Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1439 if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1440 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1444 if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1445 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1451 #endif /* HAVE_GNUTLS */
1454 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
1455 * a SSL_CTX * or NULL, in which case the default ctx is used.
1459 * 0 - Success. Connection is ready for communication.
1460 * <0 - Error. Can't create a TLS stream.
1461 * >0 - Partial success.
1462 * Do a select (using information from lber_pvt_sb_needs_{read,write}
1467 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1469 Sockbuf *sb = conn->lconn_sb;
1473 if ( HAS_TLS( sb ) ) {
1474 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1477 struct ldapoptions *lo;
1480 ctx = ld->ld_options.ldo_tls_ctx;
1482 ssl = alloc_handle( ctx, 0 );
1484 if ( ssl == NULL ) return -1;
1487 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1488 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1490 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1491 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1493 lo = LDAP_INT_GLOBAL_OPT();
1495 ctx = lo->ldo_tls_ctx;
1496 ld->ld_options.ldo_tls_ctx = ctx;
1499 if ( ld->ld_options.ldo_tls_connect_cb )
1500 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1501 ld->ld_options.ldo_tls_connect_arg );
1502 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1503 ld->ld_options.ldo_tls_connect_cb )
1504 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1507 err = tls_session_connect( ssl );
1510 errno = WSAGetLastError();
1519 if ( update_flags( sb, ssl, err )) {
1524 if ((err = ERR_peek_error()))
1527 if ( ld->ld_error ) {
1528 LDAP_FREE( ld->ld_error );
1531 ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1535 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1539 if ( ld->ld_error ) __etoa(ld->ld_error);
1543 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1544 ld->ld_error ? ld->ld_error : "" ,0,0);
1546 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1547 LBER_SBIOD_LEVEL_TRANSPORT );
1549 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1550 LBER_SBIOD_LEVEL_TRANSPORT );
1556 if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1557 err = tls_cert_verify( ssl );
1558 if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1567 * Call this to do a TLS accept on a sockbuf.
1568 * Everything else is the same as with tls_connect.
1571 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1576 if ( HAS_TLS( sb ) ) {
1577 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1580 ssl = alloc_handle( ctx_arg, 1 );
1581 if ( ssl == NULL ) return -1;
1584 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1585 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1587 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1588 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1591 err = tls_session_accept( ssl );
1594 errno = WSAGetLastError();
1603 if ( update_flags( sb, ssl, err )) return 1;
1606 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1607 gnutls_strerror( err ),0,0 );
1609 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1612 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1613 LBER_SBIOD_LEVEL_TRANSPORT );
1615 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1616 LBER_SBIOD_LEVEL_TRANSPORT );
1622 if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1623 err = tls_cert_verify( ssl );
1624 if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1632 ldap_pvt_tls_inplace ( Sockbuf *sb )
1634 return HAS_TLS( sb ) ? 1 : 0;
1638 ldap_tls_inplace( LDAP *ld )
1642 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1643 sb = ld->ld_defconn->lconn_sb;
1645 } else if ( ld->ld_sb ) {
1652 return ldap_pvt_tls_inplace( sb );
1657 x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1659 BerElementBuffer berbuf;
1660 BerElement *ber = (BerElement *)&berbuf;
1665 ber_init2( ber, cert, LBER_USE_DER );
1666 tag = ber_skip_tag( ber, &len ); /* Sequence */
1667 tag = ber_skip_tag( ber, &len ); /* Sequence */
1668 tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1669 if ( tag == 0xa0 ) /* Version is optional */
1670 tag = ber_get_int( ber, &i ); /* Int: Version */
1671 tag = ber_get_int( ber, &i ); /* Int: Serial */
1672 tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1673 ber_skip_data( ber, len );
1674 if ( !get_subject ) {
1675 tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1677 tag = ber_skip_tag( ber, &len );
1678 ber_skip_data( ber, len );
1679 tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1680 ber_skip_data( ber, len );
1681 tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1683 len = ber_ptrlen( ber );
1684 dn->bv_val = cert->bv_val + len;
1685 dn->bv_len = cert->bv_len - len;
1689 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1691 if ( !session->peer_der_dn.bv_val ) {
1692 const gnutls_datum_t *peer_cert_list;
1696 peer_cert_list = gnutls_certificate_get_peers( session->session,
1698 if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1700 bv.bv_len = peer_cert_list->size;
1701 bv.bv_val = peer_cert_list->data;
1703 x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1704 *dnbv = session->peer_der_dn;
1708 #else /* !HAVE_GNUTLS */
1710 tls_get_cert( SSL *s )
1712 /* If peer cert was bad, treat as if no cert was given */
1713 if (SSL_get_verify_result(s)) {
1714 /* If we can send an alert, do so */
1715 if (SSL_version(s) != SSL2_VERSION) {
1716 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1720 return SSL_get_peer_certificate(s);
1724 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1727 X509 *x = tls_get_cert( session );
1730 return LDAP_INVALID_CREDENTIALS;
1732 xn = X509_get_subject_name(x);
1733 dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1734 dnbv->bv_val = xn->bytes->data;
1737 #endif /* HAVE_GNUTLS */
1740 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1741 LDAPDN_rewrite_dummy *func, unsigned flags )
1743 tls_session *session = s;
1747 rc = tls_get_cert_dn( session, &bvdn );
1748 if ( rc ) return rc;
1750 rc = ldap_X509dn2bv( &bvdn, dn,
1751 (LDAPDN_rewrite_func *)func, flags);
1755 /* what kind of hostname were we given? */
1763 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1765 tls_session *session = s;
1767 const gnutls_datum_t *peer_cert_list;
1770 char altname[NI_MAXHOST];
1773 gnutls_x509_crt_t cert;
1777 char *domain = NULL;
1778 #ifdef LDAP_PF_INET6
1779 struct in6_addr addr;
1781 struct in_addr addr;
1783 int n, len1 = 0, len2 = 0;
1785 time_t now = time(0);
1787 if( ldap_int_hostname &&
1788 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1790 name = ldap_int_hostname;
1795 peer_cert_list = gnutls_certificate_get_peers( session->session,
1797 if ( !peer_cert_list ) {
1798 Debug( LDAP_DEBUG_ANY,
1799 "TLS: unable to get peer certificate.\n",
1801 /* If this was a fatal condition, things would have
1802 * aborted long before now.
1804 return LDAP_SUCCESS;
1806 ret = gnutls_x509_crt_init( &cert );
1808 return LDAP_LOCAL_ERROR;
1809 ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1811 gnutls_x509_crt_deinit( cert );
1812 return LDAP_LOCAL_ERROR;
1815 #ifdef LDAP_PF_INET6
1816 if (name[0] == '[' && strchr(name, ']')) {
1817 char *n2 = ldap_strdup(name+1);
1818 *strchr(n2, ']') = 2;
1819 if (inet_pton(AF_INET6, n2, &addr))
1824 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1825 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1828 if (ntype == IS_DNS) {
1829 len1 = strlen(name);
1830 domain = strchr(name, '.');
1832 len2 = len1 - (domain-name);
1836 for ( i=0, ret=0; ret >= 0; i++ ) {
1837 altnamesize = sizeof(altname);
1838 ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1839 altname, &altnamesize, NULL );
1840 if ( ret < 0 ) break;
1843 if ( altnamesize == 0 ) continue;
1845 if ( ret == GNUTLS_SAN_DNSNAME ) {
1846 if (ntype != IS_DNS) continue;
1848 /* Is this an exact match? */
1849 if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1853 /* Is this a wildcard match? */
1854 if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1855 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1859 } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1860 if (ntype == IS_DNS) continue;
1862 #ifdef LDAP_PF_INET6
1863 if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1867 if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1870 if (!memcmp(altname, &addr, altnamesize)) {
1878 altnamesize = sizeof(altname);
1879 ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1880 0, 0, altname, &altnamesize );
1882 Debug( LDAP_DEBUG_ANY,
1883 "TLS: unable to get common name from peer certificate.\n",
1885 ret = LDAP_CONNECT_ERROR;
1886 if ( ld->ld_error ) {
1887 LDAP_FREE( ld->ld_error );
1889 ld->ld_error = LDAP_STRDUP(
1890 _("TLS: unable to get CN from peer certificate"));
1893 ret = LDAP_LOCAL_ERROR;
1894 if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1897 } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1898 /* Is this a wildcard match? */
1900 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1906 if( ret == LDAP_LOCAL_ERROR ) {
1907 altname[altnamesize] = '\0';
1908 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1909 "common name in certificate (%s).\n",
1911 ret = LDAP_CONNECT_ERROR;
1912 if ( ld->ld_error ) {
1913 LDAP_FREE( ld->ld_error );
1915 ld->ld_error = LDAP_STRDUP(
1916 _("TLS: hostname does not match CN in peer certificate"));
1919 gnutls_x509_crt_deinit( cert );
1923 #else /* !HAVE_GNUTLS */
1926 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1928 int i, ret = LDAP_LOCAL_ERROR;
1933 #ifdef LDAP_PF_INET6
1934 struct in6_addr addr;
1936 struct in_addr addr;
1939 if( ldap_int_hostname &&
1940 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1942 name = ldap_int_hostname;
1947 x = tls_get_cert((SSL *)s);
1949 Debug( LDAP_DEBUG_ANY,
1950 "TLS: unable to get peer certificate.\n",
1952 /* If this was a fatal condition, things would have
1953 * aborted long before now.
1955 return LDAP_SUCCESS;
1958 #ifdef LDAP_PF_INET6
1959 if (name[0] == '[' && strchr(name, ']')) {
1960 char *n2 = ldap_strdup(name+1);
1961 *strchr(n2, ']') = 2;
1962 if (inet_pton(AF_INET6, n2, &addr))
1967 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1968 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1971 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1974 STACK_OF(GENERAL_NAME) *alt;
1976 ex = X509_get_ext(x, i);
1977 alt = X509V3_EXT_d2i(ex);
1979 int n, len1 = 0, len2 = 0;
1980 char *domain = NULL;
1983 if (ntype == IS_DNS) {
1984 len1 = strlen(name);
1985 domain = strchr(name, '.');
1987 len2 = len1 - (domain-name);
1990 n = sk_GENERAL_NAME_num(alt);
1991 for (i=0; i<n; i++) {
1994 gn = sk_GENERAL_NAME_value(alt, i);
1995 if (gn->type == GEN_DNS) {
1996 if (ntype != IS_DNS) continue;
1998 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1999 sl = ASN1_STRING_length(gn->d.ia5);
2002 if (sl == 0) continue;
2004 /* Is this an exact match? */
2005 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
2009 /* Is this a wildcard match? */
2010 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
2011 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2016 } else if (gn->type == GEN_IPADD) {
2017 if (ntype == IS_DNS) continue;
2019 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2020 sl = ASN1_STRING_length(gn->d.ia5);
2022 #ifdef LDAP_PF_INET6
2023 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2027 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2030 if (!memcmp(sn, &addr, sl)) {
2036 GENERAL_NAMES_free(alt);
2037 if (i < n) { /* Found a match */
2043 if (ret != LDAP_SUCCESS) {
2048 xn = X509_get_subject_name(x);
2049 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2050 buf, sizeof(buf)) == -1)
2052 Debug( LDAP_DEBUG_ANY,
2053 "TLS: unable to get common name from peer certificate.\n",
2055 ret = LDAP_CONNECT_ERROR;
2056 if ( ld->ld_error ) {
2057 LDAP_FREE( ld->ld_error );
2059 ld->ld_error = LDAP_STRDUP(
2060 _("TLS: unable to get CN from peer certificate"));
2062 } else if (strcasecmp(name, buf) == 0 ) {
2065 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2066 char *domain = strchr(name, '.');
2072 dlen = sl - (domain-name);
2075 /* Is this a wildcard match? */
2076 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2082 if( ret == LDAP_LOCAL_ERROR ) {
2083 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2084 "common name in certificate (%s).\n",
2086 ret = LDAP_CONNECT_ERROR;
2087 if ( ld->ld_error ) {
2088 LDAP_FREE( ld->ld_error );
2090 ld->ld_error = LDAP_STRDUP(
2091 _("TLS: hostname does not match CN in peer certificate"));
2100 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2105 case LDAP_OPT_X_TLS_CACERTFILE:
2106 case LDAP_OPT_X_TLS_CACERTDIR:
2107 case LDAP_OPT_X_TLS_CERTFILE:
2108 case LDAP_OPT_X_TLS_KEYFILE:
2109 case LDAP_OPT_X_TLS_RANDOM_FILE:
2110 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2111 case LDAP_OPT_X_TLS_DHFILE:
2113 case LDAP_OPT_X_TLS_CRLFILE:
2115 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2117 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2118 case LDAP_OPT_X_TLS:
2120 if ( strcasecmp( arg, "never" ) == 0 ) {
2121 i = LDAP_OPT_X_TLS_NEVER ;
2123 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
2124 i = LDAP_OPT_X_TLS_DEMAND ;
2126 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
2127 i = LDAP_OPT_X_TLS_ALLOW ;
2129 } else if ( strcasecmp( arg, "try" ) == 0 ) {
2130 i = LDAP_OPT_X_TLS_TRY ;
2132 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2133 ( strcasecmp( arg, "on" ) == 0 ) ||
2134 ( strcasecmp( arg, "yes" ) == 0) ||
2135 ( strcasecmp( arg, "true" ) == 0 ) )
2137 i = LDAP_OPT_X_TLS_HARD ;
2141 return ldap_pvt_tls_set_option( ld, option, &i );
2144 #ifdef HAVE_OPENSSL_CRL
2145 case LDAP_OPT_X_TLS_CRLCHECK:
2147 if ( strcasecmp( arg, "none" ) == 0 ) {
2148 i = LDAP_OPT_X_TLS_CRL_NONE ;
2149 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
2150 i = LDAP_OPT_X_TLS_CRL_PEER ;
2151 } else if ( strcasecmp( arg, "all" ) == 0 ) {
2152 i = LDAP_OPT_X_TLS_CRL_ALL ;
2155 return ldap_pvt_tls_set_option( ld, option, &i );
2164 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2166 struct ldapoptions *lo;
2169 assert( LDAP_VALID( ld ) );
2171 if( !LDAP_VALID( ld ) ) {
2172 return LDAP_OPT_ERROR;
2175 lo = &ld->ld_options;
2178 /* Get pointer to global option structure */
2179 lo = LDAP_INT_GLOBAL_OPT();
2181 return LDAP_NO_MEMORY;
2186 case LDAP_OPT_X_TLS:
2187 *(int *)arg = lo->ldo_tls_mode;
2189 case LDAP_OPT_X_TLS_CTX:
2190 *(void **)arg = lo->ldo_tls_ctx;
2191 if ( lo->ldo_tls_ctx ) {
2192 tls_ctx_ref( lo->ldo_tls_ctx );
2195 case LDAP_OPT_X_TLS_CACERTFILE:
2196 *(char **)arg = lo->ldo_tls_cacertfile ?
2197 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2199 case LDAP_OPT_X_TLS_CACERTDIR:
2200 *(char **)arg = lo->ldo_tls_cacertdir ?
2201 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2203 case LDAP_OPT_X_TLS_CERTFILE:
2204 *(char **)arg = lo->ldo_tls_certfile ?
2205 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2207 case LDAP_OPT_X_TLS_KEYFILE:
2208 *(char **)arg = lo->ldo_tls_keyfile ?
2209 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2211 case LDAP_OPT_X_TLS_DHFILE:
2212 *(char **)arg = lo->ldo_tls_dhfile ?
2213 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2216 case LDAP_OPT_X_TLS_CRLFILE:
2217 *(char **)arg = lo->ldo_tls_crlfile ?
2218 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2221 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2222 *(int *)arg = lo->ldo_tls_require_cert;
2224 #ifdef HAVE_OPENSSL_CRL
2225 case LDAP_OPT_X_TLS_CRLCHECK:
2226 *(int *)arg = lo->ldo_tls_crlcheck;
2229 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2230 *(char **)arg = lo->ldo_tls_ciphersuite ?
2231 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2233 case LDAP_OPT_X_TLS_RANDOM_FILE:
2235 *(char **)arg = tls_opt_randfile ?
2236 LDAP_STRDUP( tls_opt_randfile ) : NULL;
2238 *(char **)arg = NULL;
2241 case LDAP_OPT_X_TLS_SSL_CTX: {
2244 LDAPConn *conn = ld->ld_defconn;
2245 if ( conn != NULL ) {
2246 Sockbuf *sb = conn->lconn_sb;
2247 retval = ldap_pvt_tls_sb_ctx( sb );
2250 *(void **)arg = retval;
2253 case LDAP_OPT_X_TLS_CONNECT_CB:
2254 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2256 case LDAP_OPT_X_TLS_CONNECT_ARG:
2257 *(void **)arg = lo->ldo_tls_connect_arg;
2266 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2268 struct ldapoptions *lo;
2271 assert( LDAP_VALID( ld ) );
2273 if( !LDAP_VALID( ld ) ) {
2274 return LDAP_OPT_ERROR;
2277 lo = &ld->ld_options;
2280 /* Get pointer to global option structure */
2281 lo = LDAP_INT_GLOBAL_OPT();
2283 return LDAP_NO_MEMORY;
2288 case LDAP_OPT_X_TLS:
2289 if ( !arg ) return -1;
2291 switch( *(int *) arg ) {
2292 case LDAP_OPT_X_TLS_NEVER:
2293 case LDAP_OPT_X_TLS_DEMAND:
2294 case LDAP_OPT_X_TLS_ALLOW:
2295 case LDAP_OPT_X_TLS_TRY:
2296 case LDAP_OPT_X_TLS_HARD:
2298 lo->ldo_tls_mode = *(int *)arg;
2305 case LDAP_OPT_X_TLS_CTX:
2306 if ( lo->ldo_tls_ctx )
2307 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2308 lo->ldo_tls_ctx = arg;
2309 tls_ctx_ref( lo->ldo_tls_ctx );
2311 case LDAP_OPT_X_TLS_CONNECT_CB:
2312 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2314 case LDAP_OPT_X_TLS_CONNECT_ARG:
2315 lo->ldo_tls_connect_arg = arg;
2317 case LDAP_OPT_X_TLS_CACERTFILE:
2318 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2319 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2321 case LDAP_OPT_X_TLS_CACERTDIR:
2322 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2323 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2325 case LDAP_OPT_X_TLS_CERTFILE:
2326 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2327 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2329 case LDAP_OPT_X_TLS_KEYFILE:
2330 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2331 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2333 case LDAP_OPT_X_TLS_DHFILE:
2334 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2335 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2338 case LDAP_OPT_X_TLS_CRLFILE:
2339 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2340 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2343 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2344 if ( !arg ) return -1;
2345 switch( *(int *) arg ) {
2346 case LDAP_OPT_X_TLS_NEVER:
2347 case LDAP_OPT_X_TLS_DEMAND:
2348 case LDAP_OPT_X_TLS_ALLOW:
2349 case LDAP_OPT_X_TLS_TRY:
2350 case LDAP_OPT_X_TLS_HARD:
2351 lo->ldo_tls_require_cert = * (int *) arg;
2355 #ifdef HAVE_OPENSSL_CRL
2356 case LDAP_OPT_X_TLS_CRLCHECK:
2357 if ( !arg ) return -1;
2358 switch( *(int *) arg ) {
2359 case LDAP_OPT_X_TLS_CRL_NONE:
2360 case LDAP_OPT_X_TLS_CRL_PEER:
2361 case LDAP_OPT_X_TLS_CRL_ALL:
2362 lo->ldo_tls_crlcheck = * (int *) arg;
2367 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2368 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2369 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2372 case LDAP_OPT_X_TLS_RANDOM_FILE:
2376 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2377 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2381 case LDAP_OPT_X_TLS_NEWCTX:
2382 if ( !arg ) return -1;
2383 if ( lo->ldo_tls_ctx )
2384 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2385 lo->ldo_tls_ctx = NULL;
2386 return ldap_int_tls_init_ctx( lo, *(int *)arg );
2394 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2396 Sockbuf *sb = conn->lconn_sb;
2401 host = srv->lud_host;
2403 host = conn->lconn_server->lud_host;
2406 /* avoid NULL host */
2407 if( host == NULL ) {
2411 (void) ldap_pvt_tls_init();
2414 * Fortunately, the lib uses blocking io...
2416 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2417 ld->ld_errno = LDAP_CONNECT_ERROR;
2418 return (ld->ld_errno);
2421 ssl = ldap_pvt_tls_sb_ctx( sb );
2422 assert( ssl != NULL );
2425 * compare host with name(s) in certificate
2427 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2428 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2429 if (ld->ld_errno != LDAP_SUCCESS) {
2430 return ld->ld_errno;
2434 return LDAP_SUCCESS;
2438 /* Derived from openssl/apps/s_cb.c */
2440 tls_info_cb( const SSL *ssl, int where, int ret )
2444 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2446 w = where & ~SSL_ST_MASK;
2447 if ( w & SSL_ST_CONNECT ) {
2449 } else if ( w & SSL_ST_ACCEPT ) {
2457 state = LDAP_STRDUP( state );
2461 if ( where & SSL_CB_LOOP ) {
2462 Debug( LDAP_DEBUG_TRACE,
2463 "TLS trace: %s:%s\n",
2466 } else if ( where & SSL_CB_ALERT ) {
2467 char *atype = (char *) SSL_alert_type_string_long( ret );
2468 char *adesc = (char *) SSL_alert_desc_string_long( ret );
2469 op = ( where & SSL_CB_READ ) ? "read" : "write";
2472 atype = LDAP_STRDUP( atype );
2476 adesc = LDAP_STRDUP( adesc );
2480 Debug( LDAP_DEBUG_TRACE,
2481 "TLS trace: SSL3 alert %s:%s:%s\n",
2484 if ( atype ) LDAP_FREE( atype );
2485 if ( adesc ) LDAP_FREE( adesc );
2487 } else if ( where & SSL_CB_EXIT ) {
2489 Debug( LDAP_DEBUG_TRACE,
2490 "TLS trace: %s:failed in %s\n",
2492 } else if ( ret < 0 ) {
2493 Debug( LDAP_DEBUG_TRACE,
2494 "TLS trace: %s:error in %s\n",
2499 if ( state ) LDAP_FREE( state );
2504 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2513 char *certerr = NULL;
2515 cert = X509_STORE_CTX_get_current_cert( ctx );
2516 errnum = X509_STORE_CTX_get_error( ctx );
2517 errdepth = X509_STORE_CTX_get_error_depth( ctx );
2520 * X509_get_*_name return pointers to the internal copies of
2521 * those things requested. So do not free them.
2523 subject = X509_get_subject_name( cert );
2524 issuer = X509_get_issuer_name( cert );
2525 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2526 sname = X509_NAME_oneline( subject, NULL, 0 );
2527 iname = X509_NAME_oneline( issuer, NULL, 0 );
2528 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2530 if ( sname ) __etoa( sname );
2531 if ( iname ) __etoa( iname );
2533 certerr = LDAP_STRDUP( certerr );
2537 Debug( LDAP_DEBUG_TRACE,
2538 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
2540 sname ? sname : "-unknown-" );
2541 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2543 Debug( LDAP_DEBUG_ANY,
2544 "TLS certificate verification: Error, %s\n",
2548 CRYPTO_free ( sname );
2550 CRYPTO_free ( iname );
2552 if ( certerr ) LDAP_FREE( certerr );
2558 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2560 (void) tls_verify_cb( ok, ctx );
2564 /* Inspired by ERR_print_errors in OpenSSL */
2566 tls_report_error( void )
2573 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2574 ERR_error_string_n( l, buf, sizeof( buf ) );
2577 file = LDAP_STRDUP( file );
2578 __etoa( (char *)file );
2582 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2585 if ( file ) LDAP_FREE( (void *)file );
2591 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2595 /* FIXME: Pregenerate the key on startup */
2596 /* FIXME: Who frees the key? */
2597 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2600 Debug( LDAP_DEBUG_ANY,
2601 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
2602 key_length, is_export ? "export" : "domestic", 0 );
2609 tls_seed_PRNG( const char *randfile )
2611 #ifndef URANDOM_DEVICE
2612 /* no /dev/urandom (or equiv) */
2614 char buffer[MAXPATHLEN];
2616 if (randfile == NULL) {
2617 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2618 * If $HOME is not set or buffer too small to hold the pathname,
2619 * an error occurs. - From RAND_file_name() man page.
2620 * The fact is that when $HOME is NULL, .rnd is used.
2622 randfile = RAND_file_name( buffer, sizeof( buffer ) );
2624 } else if (RAND_egd(randfile) > 0) {
2629 if (randfile == NULL) {
2630 Debug( LDAP_DEBUG_ANY,
2631 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2636 total = RAND_load_file(randfile, -1);
2638 if (RAND_status() == 0) {
2639 Debug( LDAP_DEBUG_ANY,
2640 "TLS: PRNG not been seeded with enough data\n",
2645 /* assume if there was enough bits to seed that it's okay
2646 * to write derived bits to the file
2648 RAND_write_file(randfile);
2662 /* From the OpenSSL 0.9.7 distro */
2663 static const char dhpem512[] =
2664 "-----BEGIN DH PARAMETERS-----\n\
2665 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2666 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2667 -----END DH PARAMETERS-----\n";
2669 static const char dhpem1024[] =
2670 "-----BEGIN DH PARAMETERS-----\n\
2671 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2672 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2673 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2674 -----END DH PARAMETERS-----\n";
2676 static const char dhpem2048[] =
2677 "-----BEGIN DH PARAMETERS-----\n\
2678 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2679 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2680 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2681 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2682 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2683 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2684 -----END DH PARAMETERS-----\n";
2686 static const char dhpem4096[] =
2687 "-----BEGIN DH PARAMETERS-----\n\
2688 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2689 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2690 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2691 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2692 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2693 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2694 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2695 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2696 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2697 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2698 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2699 -----END DH PARAMETERS-----\n";
2701 static const struct dhinfo dhpem[] = {
2702 { 512, dhpem512, sizeof(dhpem512) },
2703 { 1024, dhpem1024, sizeof(dhpem1024) },
2704 { 2048, dhpem2048, sizeof(dhpem2048) },
2705 { 4096, dhpem4096, sizeof(dhpem4096) },
2710 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2712 struct dhplist *p = NULL;
2717 /* Do we have params of this length already? */
2718 #ifdef LDAP_R_COMPILE
2719 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2721 for ( p = dhparams; p; p=p->next ) {
2722 if ( p->keylength == key_length ) {
2723 #ifdef LDAP_R_COMPILE
2724 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2730 /* No - check for hardcoded params */
2732 for (i=0; dhpem[i].keylength; i++) {
2733 if ( dhpem[i].keylength == key_length ) {
2734 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2740 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2744 /* Generating on the fly is expensive/slow... */
2746 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2749 p = LDAP_MALLOC( sizeof(struct dhplist) );
2751 p->keylength = key_length;
2758 #ifdef LDAP_R_COMPILE
2759 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2765 #endif /* HAVE_OPENSSL */
2768 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2773 if (HAS_TLS( sb )) {
2774 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2783 ldap_pvt_tls_get_strength( void *s )
2788 c = SSL_get_current_cipher((SSL *)s);
2789 return SSL_CIPHER_get_bits(c, NULL);
2790 #elif defined(HAVE_GNUTLS)
2791 tls_session *session = s;
2792 gnutls_cipher_algorithm_t c;
2794 c = gnutls_cipher_get( session->session );
2795 return gnutls_cipher_get_key_size( c );
2803 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2806 struct berval der_dn;
2812 x = SSL_get_certificate((SSL *)s);
2814 if (!x) return LDAP_INVALID_CREDENTIALS;
2816 xn = X509_get_subject_name(x);
2817 der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2818 der_dn.bv_val = xn->bytes->data;
2819 #elif defined(HAVE_GNUTLS)
2820 tls_session *session = s;
2821 const gnutls_datum_t *x;
2824 x = gnutls_certificate_get_ours( session->session );
2826 if (!x) return LDAP_INVALID_CREDENTIALS;
2828 bv.bv_val = x->data;
2829 bv.bv_len = x->size;
2831 x509_cert_get_dn( &bv, &der_dn, 1 );
2833 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2835 #else /* !HAVE_TLS */
2836 return LDAP_NOT_SUPPORTED;
2841 ldap_start_tls( LDAP *ld,
2842 LDAPControl **serverctrls,
2843 LDAPControl **clientctrls,
2846 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2847 NULL, serverctrls, clientctrls, msgidp );
2851 ldap_install_tls( LDAP *ld )
2854 return LDAP_NOT_SUPPORTED;
2856 if ( ldap_tls_inplace( ld ) ) {
2857 return LDAP_LOCAL_ERROR;
2860 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2865 ldap_start_tls_s ( LDAP *ld,
2866 LDAPControl **serverctrls,
2867 LDAPControl **clientctrls )
2870 return LDAP_NOT_SUPPORTED;
2873 char *rspoid = NULL;
2874 struct berval *rspdata = NULL;
2876 /* XXYYZ: this initiates operation only on default connection! */
2878 if ( ldap_tls_inplace( ld ) ) {
2879 return LDAP_LOCAL_ERROR;
2882 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2883 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2885 if ( rspoid != NULL ) {
2889 if ( rspdata != NULL ) {
2890 ber_bvfree( rspdata );
2893 if ( rc == LDAP_SUCCESS ) {
2894 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2901 /* These tags probably all belong in lber.h, but they're
2902 * not normally encountered when processing LDAP, so maybe
2903 * they belong somewhere else instead.
2906 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2908 /* Tags for string types used in a DirectoryString.
2910 * Note that IA5string is not one of the defined choices for
2911 * DirectoryString in X.520, but it gets used for email AVAs.
2913 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2914 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2915 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2916 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2917 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2918 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2921 find_oid( struct berval *oid )
2925 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2926 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2927 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2933 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2934 * x509_name must be raw DER. If func is non-NULL, the
2935 * constructed DN will use numeric OIDs to identify attributeTypes,
2936 * and the func() will be invoked to rewrite the DN with the given
2939 * Otherwise the DN will use shortNames from a hardcoded table.
2942 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2947 LDAPAVA *newAVA, *baseAVA;
2948 BerElementBuffer berbuf;
2949 BerElement *ber = (BerElement *)&berbuf;
2950 char oids[8192], *oidptr = oids, *oidbuf = NULL;
2952 char *dn_end, *rdn_end;
2953 int i, navas, nrdns, rc = LDAP_SUCCESS;
2954 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2960 struct berval Oid, Val, oid2, *in = x509_name;
2962 assert( bv != NULL );
2970 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2971 * An AVA is a SEQUENCE of attr and value.
2972 * Count the number of AVAs and RDNs
2974 ber_init2( ber, in, LBER_USE_DER );
2975 tag = ber_peek_tag( ber, &len );
2976 if ( tag != LBER_SEQUENCE )
2977 return LDAP_DECODING_ERROR;
2979 for ( tag = ber_first_element( ber, &len, &dn_end );
2981 tag = ber_next_element( ber, &len, dn_end )) {
2983 for ( tag = ber_first_element( ber, &len, &rdn_end );
2984 tag == LBER_SEQUENCE;
2985 tag = ber_next_element( ber, &len, rdn_end )) {
2986 tag = ber_skip_tag( ber, &len );
2987 ber_skip_data( ber, len );
2992 /* Allocate the DN/RDN/AVA stuff as a single block */
2993 dnsize = sizeof(LDAPRDN) * (nrdns+1);
2994 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
2995 dnsize += sizeof(LDAPAVA) * navas;
2996 if (dnsize > sizeof(ptrs)) {
2997 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
2998 if ( newDN == NULL )
2999 return LDAP_NO_MEMORY;
3001 newDN = (LDAPDN)(char *)ptrs;
3004 newDN[nrdns] = NULL;
3005 newRDN = (LDAPRDN)(newDN + nrdns+1);
3006 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
3009 /* Rewind and start extracting */
3012 tag = ber_first_element( ber, &len, &dn_end );
3013 for ( i = nrdns - 1; i >= 0; i-- ) {
3016 for ( tag = ber_first_element( ber, &len, &rdn_end );
3017 tag == LBER_SEQUENCE;
3018 tag = ber_next_element( ber, &len, rdn_end )) {
3021 tag = ber_skip_tag( ber, &len );
3022 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
3023 if ( tag != LBER_TAG_OID ) {
3024 rc = LDAP_DECODING_ERROR;
3028 oid2.bv_val = oidptr;
3029 oid2.bv_len = oidrem;
3030 if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) {
3031 rc = LDAP_DECODING_ERROR;
3034 oidname = find_oid( &oid2 );
3036 newAVA->la_attr = oid2;
3037 oidptr += oid2.bv_len + 1;
3038 oidrem -= oid2.bv_len + 1;
3040 /* Running out of OID buffer space? */
3042 if ( oidsize == 0 ) {
3043 oidsize = sizeof(oids) * 2;
3045 oidbuf = LDAP_MALLOC( oidsize );
3046 if ( oidbuf == NULL ) goto nomem;
3050 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3051 if ( oidbuf == NULL ) goto nomem;
3052 /* Buffer moved! Fix AVA pointers */
3053 if ( old != oidbuf ) {
3055 long dif = oidbuf - old;
3057 for (a=baseAVA; a<=newAVA; a++){
3058 if (a->la_attr.bv_val >= old &&
3059 a->la_attr.bv_val <= (old + oidsize))
3060 a->la_attr.bv_val += dif;
3063 oidptr = oidbuf + oidsize - oidrem;
3070 newAVA->la_attr = oidname->oid;
3072 newAVA->la_attr = oidname->name;
3075 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
3077 case LBER_TAG_UNIVERSAL:
3078 /* This uses 32-bit ISO 10646-1 */
3079 csize = 4; goto to_utf8;
3081 /* This uses 16-bit ISO 10646-1 */
3082 csize = 2; goto to_utf8;
3083 case LBER_TAG_TELETEX:
3084 /* This uses 8-bit, assume ISO 8859-1 */
3086 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3087 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3088 if (rc != LDAP_SUCCESS) goto nomem;
3089 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3092 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3093 /* This is already in UTF-8 encoding */
3095 case LBER_TAG_PRINTABLE:
3096 /* These are always 7-bit strings */
3097 newAVA->la_value = Val;
3101 newAVA->la_private = NULL;
3102 newAVA->la_flags = LDAP_AVA_STRING;
3106 tag = ber_next_element( ber, &len, dn_end );
3110 rc = func( newDN, flags, NULL );
3111 if ( rc != LDAP_SUCCESS )
3115 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3118 for (;baseAVA < newAVA; baseAVA++) {
3119 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3120 LDAP_FREE( baseAVA->la_attr.bv_val );
3121 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3122 LDAP_FREE( baseAVA->la_value.bv_val );
3126 LDAP_FREE( oidbuf );
3127 if ( newDN != (LDAPDN)(char *) ptrs )