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 by Howard Chu
20 #include "ldap_config.h"
24 #include <ac/stdlib.h>
26 #include <ac/socket.h>
27 #include <ac/string.h>
30 #include <ac/unistd.h>
32 #include <ac/dirent.h>
42 #include <ldap_pvt_thread.h>
46 #include <gnutls/gnutls.h>
47 #include <gnutls/x509.h>
50 #define DH_BITS (1024)
53 #ifdef HAVE_OPENSSL_SSL_H
54 #include <openssl/ssl.h>
55 #include <openssl/x509v3.h>
56 #include <openssl/err.h>
57 #include <openssl/rand.h>
58 #include <openssl/safestack.h>
59 #elif defined( HAVE_SSL_H )
64 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
65 (void *)&sb_tls_sbio )
67 /* RFC2459 minimum required set of supported attribute types
70 typedef struct oid_name {
75 #define CN_OID oids[0].oid.bv_val
77 static oid_name oids[] = {
78 { BER_BVC("2.5.4.3"), BER_BVC("cn") },
79 { BER_BVC("2.5.4.4"), BER_BVC("sn") },
80 { BER_BVC("2.5.4.6"), BER_BVC("c") },
81 { BER_BVC("2.5.4.7"), BER_BVC("l") },
82 { BER_BVC("2.5.4.8"), BER_BVC("st") },
83 { BER_BVC("2.5.4.10"), BER_BVC("o") },
84 { BER_BVC("2.5.4.11"), BER_BVC("ou") },
85 { BER_BVC("2.5.4.12"), BER_BVC("title") },
86 { BER_BVC("2.5.4.41"), BER_BVC("name") },
87 { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
88 { BER_BVC("2.5.4.43"), BER_BVC("initials") },
89 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
90 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
91 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
92 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
93 { BER_BVNULL, BER_BVNULL }
98 typedef struct tls_cipher_suite {
100 gnutls_kx_algorithm_t kx;
101 gnutls_cipher_algorithm_t cipher;
102 gnutls_mac_algorithm_t mac;
103 gnutls_protocol_t version;
106 static tls_cipher_suite *ciphers;
107 static int n_ciphers;
109 /* sorta replacing SSL_CTX */
110 typedef struct tls_ctx {
111 struct ldapoptions *lo;
112 gnutls_certificate_credentials_t cred;
113 gnutls_dh_params_t dh_params;
114 unsigned long verify_depth;
119 #ifdef LDAP_R_COMPILE
120 ldap_pvt_thread_mutex_t ref_mutex;
124 /* sorta replacing SSL */
125 typedef struct tls_session {
127 gnutls_session_t session;
128 struct berval peer_der_dn;
131 #ifdef LDAP_R_COMPILE
134 ldap_pvt_gcry_mutex_init( void **priv )
137 ldap_pvt_thread_mutex_t *lock = LDAP_MALLOC( sizeof( ldap_pvt_thread_mutex_t ));
142 err = ldap_pvt_thread_mutex_init( lock );
151 ldap_pvt_gcry_mutex_destroy( void **lock )
153 int err = ldap_pvt_thread_mutex_destroy( *lock );
158 ldap_pvt_gcry_mutex_lock( void **lock )
160 return ldap_pvt_thread_mutex_lock( *lock );
163 ldap_pvt_gcry_mutex_unlock( void **lock )
165 return ldap_pvt_thread_mutex_unlock( *lock );
168 static struct gcry_thread_cbs ldap_generic_thread_cbs = {
169 GCRY_THREAD_OPTION_USER,
171 ldap_pvt_gcry_mutex_init,
172 ldap_pvt_gcry_mutex_destroy,
173 ldap_pvt_gcry_mutex_lock,
174 ldap_pvt_gcry_mutex_unlock,
175 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
179 tls_init_threads( void )
181 gcry_control (GCRYCTL_SET_THREAD_CBS, &ldap_generic_thread_cbs);
183 #endif /* LDAP_R_COMPILE */
186 ldap_pvt_tls_ctx_free ( void *c )
191 #ifdef LDAP_R_COMPILE
192 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
194 refcount = --ctx->refcount;
195 #ifdef LDAP_R_COMPILE
196 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
200 LDAP_FREE( ctx->kx_list );
201 gnutls_certificate_free_credentials( ctx->cred );
206 tls_ctx_new ( struct ldapoptions *lo )
210 ctx = ber_memcalloc ( 1, sizeof (*ctx) );
213 if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
218 #ifdef LDAP_R_COMPILE
219 ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
226 tls_ctx_ref( tls_ctx *ctx )
228 #ifdef LDAP_R_COMPILE
229 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
232 #ifdef LDAP_R_COMPILE
233 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
238 tls_session_new ( tls_ctx * ctx, int is_server )
240 tls_session *session;
242 session = ber_memcalloc ( 1, sizeof (*session) );
247 gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
248 gnutls_set_default_priority( session->session );
249 if ( ctx->kx_list ) {
250 gnutls_kx_set_priority( session->session, ctx->kx_list );
251 gnutls_cipher_set_priority( session->session, ctx->cipher_list );
252 gnutls_mac_set_priority( session->session, ctx->mac_list );
255 gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, ctx->cred );
259 if ( ctx->lo->ldo_tls_require_cert ) {
260 flag = GNUTLS_CERT_REQUEST;
261 if ( ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
262 ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
263 flag = GNUTLS_CERT_REQUIRE;
264 gnutls_certificate_server_set_request( session->session, flag );
271 tls_session_free ( tls_session * session )
273 ber_memfree ( session );
276 #define tls_session_connect( ssl ) gnutls_handshake( ssl->session )
277 #define tls_session_accept( ssl ) gnutls_handshake( ssl->session )
279 /* suites is a string of colon-separated cipher suite names. */
281 tls_parse_ciphers( tls_ctx *ctx, char *suites )
285 int *list, nkx = 0, ncipher = 0, nmac = 0;
286 int *kx, *cipher, *mac;
291 end = strchr(ptr, ':');
296 for (i=0; i<n_ciphers; i++) {
297 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
302 if ( i == n_ciphers ) {
303 /* unrecognized cipher suite */
308 /* Space for all 3 lists */
309 list = LDAP_MALLOC( (num+1) * sizeof(int) * 3 );
318 end = strchr(ptr, ':');
323 for (i=0; i<n_ciphers; i++) {
324 /* For each cipher suite, insert its algorithms into
325 * their respective priority lists. Make sure they
326 * only appear once in each list.
328 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
329 for (j=0; j<nkx; j++)
330 if ( kx[j] == ciphers[i].kx )
333 kx[nkx++] = ciphers[i].kx;
334 for (j=0; j<ncipher; j++)
335 if ( cipher[j] == ciphers[i].cipher )
338 cipher[ncipher++] = ciphers[i].cipher;
339 for (j=0; j<nmac; j++)
340 if ( mac[j] == ciphers[i].mac )
343 mac[nmac++] = ciphers[i].mac;
352 ctx->cipher_list = cipher;
359 typedef SSL_CTX tls_ctx;
360 typedef SSL tls_session;
362 static int tls_opt_trace = 1;
363 static char *tls_opt_randfile = NULL;
365 static void tls_report_error( void );
367 static void tls_info_cb( const SSL *ssl, int where, int ret );
368 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
369 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
370 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
372 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
374 typedef struct dhplist {
375 struct dhplist *next;
380 static dhplist *dhparams;
382 static int tls_seed_PRNG( const char *randfile );
384 #ifdef LDAP_R_COMPILE
386 * provide mutexes for the SSLeay library.
388 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
390 static void tls_locking_cb( int mode, int type, const char *file, int line )
392 if ( mode & CRYPTO_LOCK ) {
393 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
395 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
399 static void tls_init_threads( void )
403 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
404 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
406 CRYPTO_set_locking_callback( tls_locking_cb );
407 CRYPTO_set_id_callback( ldap_pvt_thread_self );
408 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
409 * is an integral type that fits in an unsigned long
412 #endif /* LDAP_R_COMPILE */
415 ldap_pvt_tls_ctx_free ( void *c )
422 tls_ctx_new( struct ldapoptions *lo )
424 return SSL_CTX_new( SSLv23_method() );
428 tls_ctx_ref( void *c )
431 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
435 tls_session_new( tls_ctx *ctx, int is_server )
437 return SSL_new( ctx );
440 #define tls_session_connect( ssl ) SSL_connect( ssl )
441 #define tls_session_accept( ssl ) SSL_accept( ssl )
443 static STACK_OF(X509_NAME) *
444 get_ca_list( char * bundle, char * dir )
446 STACK_OF(X509_NAME) *ca_list = NULL;
449 ca_list = SSL_load_client_CA_file( bundle );
451 #if defined(HAVE_DIRENT_H) || defined(dirent)
456 ca_list = sk_X509_NAME_new_null();
459 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
461 sk_X509_NAME_free( ca_list );
469 #endif /* HAVE_GNUTLS */
471 #ifdef LDAP_R_COMPILE
473 * an extra mutex for the default ctx.
475 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
479 ldap_int_tls_destroy( struct ldapoptions *lo )
481 if ( lo->ldo_tls_ctx ) {
482 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
483 lo->ldo_tls_ctx = NULL;
486 if ( lo->ldo_tls_certfile ) {
487 LDAP_FREE( lo->ldo_tls_certfile );
488 lo->ldo_tls_certfile = NULL;
490 if ( lo->ldo_tls_keyfile ) {
491 LDAP_FREE( lo->ldo_tls_keyfile );
492 lo->ldo_tls_keyfile = NULL;
494 if ( lo->ldo_tls_dhfile ) {
495 LDAP_FREE( lo->ldo_tls_dhfile );
496 lo->ldo_tls_dhfile = NULL;
498 if ( lo->ldo_tls_cacertfile ) {
499 LDAP_FREE( lo->ldo_tls_cacertfile );
500 lo->ldo_tls_cacertfile = NULL;
502 if ( lo->ldo_tls_cacertdir ) {
503 LDAP_FREE( lo->ldo_tls_cacertdir );
504 lo->ldo_tls_cacertdir = NULL;
506 if ( lo->ldo_tls_ciphersuite ) {
507 LDAP_FREE( lo->ldo_tls_ciphersuite );
508 lo->ldo_tls_ciphersuite = NULL;
511 if ( lo->ldo_tls_crlfile ) {
512 LDAP_FREE( lo->ldo_tls_crlfile );
513 lo->ldo_tls_crlfile = NULL;
519 * Tear down the TLS subsystem. Should only be called once.
522 ldap_pvt_tls_destroy( void )
524 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
526 ldap_int_tls_destroy( lo );
529 LDAP_FREE( ciphers );
532 gnutls_global_deinit();
538 if ( tls_opt_randfile ) {
539 LDAP_FREE( tls_opt_randfile );
540 tls_opt_randfile = NULL;
546 * Initialize TLS subsystem. Should be called only once.
549 ldap_pvt_tls_init( void )
551 static int tls_initialized = 0;
553 if ( tls_initialized++ ) return 0;
555 #ifdef LDAP_R_COMPILE
557 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
561 gnutls_global_init ();
563 /* GNUtls cipher suite handling: The library ought to parse suite
564 * names for us, but it doesn't. It will return a list of suite names
565 * that it supports, so we can do parsing ourselves. It ought to tell
566 * us how long the list is, but it doesn't do that either, so we just
567 * have to count it manually...
571 tls_cipher_suite *ptr, tmp;
574 while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
575 &tmp.mac, &tmp.version ))
580 ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
583 for ( i=0; i<n_ciphers; i++ ) {
584 ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
585 &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
586 &ciphers[i].version );
590 #else /* !HAVE_GNUTLS */
594 char *file = LDAP_STRDUP( tls_opt_randfile );
595 if ( file ) __atoe( file );
596 (void) tls_seed_PRNG( file );
600 (void) tls_seed_PRNG( tls_opt_randfile );
603 SSL_load_error_strings();
604 SSLeay_add_ssl_algorithms();
606 /* FIXME: mod_ssl does this */
607 X509V3_add_standard_extensions();
609 #endif /* HAVE_GNUTLS */
614 * initialize a new TLS context
617 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
620 char *ciphersuite = lo->ldo_tls_ciphersuite;
621 char *cacertfile = lo->ldo_tls_cacertfile;
622 char *cacertdir = lo->ldo_tls_cacertdir;
623 char *certfile = lo->ldo_tls_certfile;
624 char *keyfile = lo->ldo_tls_keyfile;
626 char *crlfile = lo->ldo_tls_crlfile;
628 char *dhfile = lo->ldo_tls_dhfile;
631 if ( lo->ldo_tls_ctx )
636 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
637 /* minimum configuration not provided */
638 return LDAP_NOT_SUPPORTED;
642 /* This ASCII/EBCDIC handling is a real pain! */
644 ciphersuite = LDAP_STRDUP( ciphersuite );
645 __atoe( ciphersuite );
648 cacertfile = LDAP_STRDUP( cacertfile );
649 __atoe( cacertfile );
652 certfile = LDAP_STRDUP( certfile );
656 keyfile = LDAP_STRDUP( keyfile );
661 crlfile = LDAP_STRDUP( crlfile );
666 cacertdir = LDAP_STRDUP( cacertdir );
670 dhfile = LDAP_STRDUP( dhfile );
675 lo->ldo_tls_ctx = tls_ctx_new( lo );
676 if ( lo->ldo_tls_ctx == NULL ) {
678 Debug( LDAP_DEBUG_ANY,
679 "TLS: could not allocate default ctx.\n",
682 Debug( LDAP_DEBUG_ANY,
683 "TLS: could not allocate default ctx (%lu).\n",
684 ERR_peek_error(),0,0);
691 if ( lo->ldo_tls_ciphersuite &&
692 tls_parse_ciphers( lo->ldo_tls_ctx,
694 Debug( LDAP_DEBUG_ANY,
695 "TLS: could not set cipher list %s.\n",
696 lo->ldo_tls_ciphersuite, 0, 0 );
701 if (lo->ldo_tls_cacertdir != NULL) {
702 Debug( LDAP_DEBUG_ANY,
703 "TLS: warning: cacertdir not implemented for gnutls\n",
707 if (lo->ldo_tls_cacertfile != NULL) {
708 rc = gnutls_certificate_set_x509_trust_file(
709 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
711 GNUTLS_X509_FMT_PEM );
712 if ( rc < 0 ) goto error_exit;
715 if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
716 rc = gnutls_certificate_set_x509_key_file(
717 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
720 GNUTLS_X509_FMT_PEM );
721 if ( rc ) goto error_exit;
722 } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
723 Debug( LDAP_DEBUG_ANY,
724 "TLS: only one of certfile and keyfile specified\n",
730 if ( lo->ldo_tls_dhfile ) {
731 Debug( LDAP_DEBUG_ANY,
732 "TLS: warning: ignoring dhfile\n",
736 if ( lo->ldo_tls_crlfile ) {
737 rc = gnutls_certificate_set_x509_crl_file(
738 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
740 GNUTLS_X509_FMT_PEM );
741 if ( rc < 0 ) goto error_exit;
744 gnutls_dh_params_init (&((tls_ctx*)
745 lo->ldo_tls_ctx)->dh_params);
746 gnutls_dh_params_generate2 (((tls_ctx*)
747 lo->ldo_tls_ctx)->dh_params,
751 #else /* !HAVE_GNUTLS */
754 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
755 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
758 if ( lo->ldo_tls_ciphersuite &&
759 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
761 Debug( LDAP_DEBUG_ANY,
762 "TLS: could not set cipher list %s.\n",
763 lo->ldo_tls_ciphersuite, 0, 0 );
769 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
770 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
771 cacertfile, cacertdir ) ||
772 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
774 Debug( LDAP_DEBUG_ANY, "TLS: "
775 "could not load verify locations (file:`%s',dir:`%s').\n",
776 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
777 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
785 STACK_OF(X509_NAME) *calist;
786 /* List of CA names to send to a client */
787 calist = get_ca_list( cacertfile, cacertdir );
789 Debug( LDAP_DEBUG_ANY, "TLS: "
790 "could not load client CA list (file:`%s',dir:`%s').\n",
791 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
792 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
799 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
803 if ( lo->ldo_tls_certfile &&
804 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
805 certfile, SSL_FILETYPE_PEM ) )
807 Debug( LDAP_DEBUG_ANY,
808 "TLS: could not use certificate `%s'.\n",
809 lo->ldo_tls_certfile,0,0);
815 /* Key validity is checked automatically if cert has already been set */
816 if ( lo->ldo_tls_keyfile &&
817 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
818 keyfile, SSL_FILETYPE_PEM ) )
820 Debug( LDAP_DEBUG_ANY,
821 "TLS: could not use key file `%s'.\n",
822 lo->ldo_tls_keyfile,0,0);
828 if ( lo->ldo_tls_dhfile ) {
833 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
834 Debug( LDAP_DEBUG_ANY,
835 "TLS: could not use DH parameters file `%s'.\n",
836 lo->ldo_tls_dhfile,0,0);
841 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
842 p = LDAP_MALLOC( sizeof(dhplist) );
844 p->keylength = DH_size( dh ) * 8;
853 if ( tls_opt_trace ) {
854 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
858 if ( lo->ldo_tls_require_cert ) {
860 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
861 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
862 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
866 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
867 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
868 tls_verify_ok : tls_verify_cb );
869 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
870 if ( lo->ldo_tls_dhfile ) {
871 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
873 #ifdef HAVE_OPENSSL_CRL
874 if ( lo->ldo_tls_crlcheck ) {
875 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
876 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
877 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
878 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
879 X509_STORE_set_flags( x509_s,
880 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
885 #endif /* HAVE_GNUTLS */
888 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
889 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
890 lo->ldo_tls_ctx = NULL;
893 LDAP_FREE( ciphersuite );
894 LDAP_FREE( cacertfile );
895 LDAP_FREE( certfile );
896 LDAP_FREE( keyfile );
898 LDAP_FREE( crlfile );
900 LDAP_FREE( cacertdir );
908 * initialize the default context
911 ldap_pvt_tls_init_def_ctx( int is_server )
913 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
915 #ifdef LDAP_R_COMPILE
916 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
918 rc = ldap_int_tls_init_ctx( lo, is_server );
919 #ifdef LDAP_R_COMPILE
920 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
926 alloc_handle( void *ctx_arg, int is_server )
934 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
935 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
936 ctx = lo->ldo_tls_ctx;
939 ssl = tls_session_new( ctx, is_server );
941 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
948 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
950 sb->sb_trans_needs_read = 0;
951 sb->sb_trans_needs_write = 0;
954 if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
957 switch (gnutls_record_get_direction (ssl->session)) {
959 sb->sb_trans_needs_read = 1;
962 sb->sb_trans_needs_write = 1;
965 #else /* !HAVE_GNUTLS */
966 rc = SSL_get_error(ssl, rc);
967 if (rc == SSL_ERROR_WANT_READ) {
968 sb->sb_trans_needs_read = 1;
971 } else if (rc == SSL_ERROR_WANT_WRITE) {
972 sb->sb_trans_needs_write = 1;
975 } else if (rc == SSL_ERROR_WANT_CONNECT) {
978 #endif /* HAVE_GNUTLS */
983 * TLS support for LBER Sockbufs
988 Sockbuf_IO_Desc *sbiod;
994 sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
998 if ( buf == NULL || len <= 0 ) return 0;
1000 p = (struct tls_data *)ptr;
1002 if ( p == NULL || p->sbiod == NULL ) {
1006 return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1010 sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1014 if ( buf == NULL || len <= 0 ) return 0;
1016 p = (struct tls_data *)ptr;
1018 if ( p == NULL || p->sbiod == NULL ) {
1022 return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1026 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1029 tls_session *session = arg;
1031 assert( sbiod != NULL );
1033 p = LBER_MALLOC( sizeof( *p ) );
1038 gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1039 gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1040 gnutls_transport_set_push_function( session->session, sb_gtls_send );
1043 sbiod->sbiod_pvt = p;
1048 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1052 assert( sbiod != NULL );
1053 assert( sbiod->sbiod_pvt != NULL );
1055 p = (struct tls_data *)sbiod->sbiod_pvt;
1056 gnutls_deinit ( p->ssl->session );
1057 LBER_FREE( p->ssl );
1058 LBER_FREE( sbiod->sbiod_pvt );
1059 sbiod->sbiod_pvt = NULL;
1064 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1068 assert( sbiod != NULL );
1069 assert( sbiod->sbiod_pvt != NULL );
1071 p = (struct tls_data *)sbiod->sbiod_pvt;
1072 gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1077 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1081 assert( sbiod != NULL );
1082 assert( sbiod->sbiod_pvt != NULL );
1084 p = (struct tls_data *)sbiod->sbiod_pvt;
1086 if ( opt == LBER_SB_OPT_GET_SSL ) {
1087 *((tls_session **)arg) = p->ssl;
1090 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1091 if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1096 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1100 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1106 assert( sbiod != NULL );
1107 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1109 p = (struct tls_data *)sbiod->sbiod_pvt;
1111 ret = gnutls_record_recv ( p->ssl->session, buf, len );
1113 case GNUTLS_E_INTERRUPTED:
1114 case GNUTLS_E_AGAIN:
1115 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1116 sock_errset(EWOULDBLOCK);
1119 case GNUTLS_E_REHANDSHAKE:
1120 for ( ret = gnutls_handshake ( p->ssl->session );
1121 ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1122 ret = gnutls_handshake ( p->ssl->session ) );
1123 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1127 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1133 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1139 assert( sbiod != NULL );
1140 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1142 p = (struct tls_data *)sbiod->sbiod_pvt;
1144 ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1146 if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1147 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1148 sock_errset(EWOULDBLOCK);
1151 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1156 #else /* !HAVE_GNUTLS */
1159 sb_tls_bio_create( BIO *b ) {
1168 sb_tls_bio_destroy( BIO *b )
1170 if ( b == NULL ) return 0;
1172 b->ptr = NULL; /* sb_tls_remove() will free it */
1179 sb_tls_bio_read( BIO *b, char *buf, int len )
1184 if ( buf == NULL || len <= 0 ) return 0;
1186 p = (struct tls_data *)b->ptr;
1188 if ( p == NULL || p->sbiod == NULL ) {
1192 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1194 BIO_clear_retry_flags( b );
1196 int err = sock_errno();
1197 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1198 BIO_set_retry_read( b );
1206 sb_tls_bio_write( BIO *b, const char *buf, int len )
1211 if ( buf == NULL || len <= 0 ) return 0;
1213 p = (struct tls_data *)b->ptr;
1215 if ( p == NULL || p->sbiod == NULL ) {
1219 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1221 BIO_clear_retry_flags( b );
1223 int err = sock_errno();
1224 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1225 BIO_set_retry_write( b );
1233 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1235 if ( cmd == BIO_CTRL_FLUSH ) {
1236 /* The OpenSSL library needs this */
1243 sb_tls_bio_gets( BIO *b, char *buf, int len )
1249 sb_tls_bio_puts( BIO *b, const char *str )
1251 return sb_tls_bio_write( b, str, strlen( str ) );
1254 static BIO_METHOD sb_tls_bio_method =
1256 ( 100 | 0x400 ), /* it's a source/sink BIO */
1268 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1273 assert( sbiod != NULL );
1275 p = LBER_MALLOC( sizeof( *p ) );
1280 p->ssl = (SSL *)arg;
1282 bio = BIO_new( &sb_tls_bio_method );
1283 bio->ptr = (void *)p;
1284 SSL_set_bio( p->ssl, bio, bio );
1285 sbiod->sbiod_pvt = p;
1290 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1294 assert( sbiod != NULL );
1295 assert( sbiod->sbiod_pvt != NULL );
1297 p = (struct tls_data *)sbiod->sbiod_pvt;
1299 LBER_FREE( sbiod->sbiod_pvt );
1300 sbiod->sbiod_pvt = NULL;
1305 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1309 assert( sbiod != NULL );
1310 assert( sbiod->sbiod_pvt != NULL );
1312 p = (struct tls_data *)sbiod->sbiod_pvt;
1313 SSL_shutdown( p->ssl );
1318 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1322 assert( sbiod != NULL );
1323 assert( sbiod->sbiod_pvt != NULL );
1325 p = (struct tls_data *)sbiod->sbiod_pvt;
1327 if ( opt == LBER_SB_OPT_GET_SSL ) {
1328 *((SSL **)arg) = p->ssl;
1331 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1332 if( SSL_pending( p->ssl ) > 0 ) {
1337 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1341 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1347 assert( sbiod != NULL );
1348 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1350 p = (struct tls_data *)sbiod->sbiod_pvt;
1352 ret = SSL_read( p->ssl, (char *)buf, len );
1354 errno = WSAGetLastError();
1356 err = SSL_get_error( p->ssl, ret );
1357 if (err == SSL_ERROR_WANT_READ ) {
1358 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1359 sock_errset(EWOULDBLOCK);
1362 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1367 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1373 assert( sbiod != NULL );
1374 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1376 p = (struct tls_data *)sbiod->sbiod_pvt;
1378 ret = SSL_write( p->ssl, (char *)buf, len );
1380 errno = WSAGetLastError();
1382 err = SSL_get_error( p->ssl, ret );
1383 if (err == SSL_ERROR_WANT_WRITE ) {
1384 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1385 sock_errset(EWOULDBLOCK);
1388 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1395 static Sockbuf_IO sb_tls_sbio =
1397 sb_tls_setup, /* sbi_setup */
1398 sb_tls_remove, /* sbi_remove */
1399 sb_tls_ctrl, /* sbi_ctrl */
1400 sb_tls_read, /* sbi_read */
1401 sb_tls_write, /* sbi_write */
1402 sb_tls_close /* sbi_close */
1406 /* Certs are not automatically varified during the handshake */
1408 tls_cert_verify( tls_session *ssl )
1410 unsigned int status = 0;
1412 time_t now = time(0);
1414 err = gnutls_certificate_verify_peers2( ssl->session, &status );
1416 Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1421 Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1425 if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1426 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1430 if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1431 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1437 #endif /* HAVE_GNUTLS */
1440 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
1441 * a SSL_CTX * or NULL, in which case the default ctx is used.
1445 * 0 - Success. Connection is ready for communication.
1446 * <0 - Error. Can't create a TLS stream.
1447 * >0 - Partial success.
1448 * Do a select (using information from lber_pvt_sb_needs_{read,write}
1453 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1455 Sockbuf *sb = conn->lconn_sb;
1459 if ( HAS_TLS( sb ) ) {
1460 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1463 struct ldapoptions *lo;
1466 ctx = ld->ld_options.ldo_tls_ctx;
1468 ssl = alloc_handle( ctx, 0 );
1470 if ( ssl == NULL ) return -1;
1473 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1474 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1476 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1477 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1479 lo = LDAP_INT_GLOBAL_OPT();
1481 ctx = lo->ldo_tls_ctx;
1482 ld->ld_options.ldo_tls_ctx = ctx;
1485 if ( ld->ld_options.ldo_tls_connect_cb )
1486 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1487 ld->ld_options.ldo_tls_connect_arg );
1488 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1489 ld->ld_options.ldo_tls_connect_cb )
1490 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1493 err = tls_session_connect( ssl );
1496 errno = WSAGetLastError();
1505 if ( update_flags( sb, ssl, err )) {
1510 if ((err = ERR_peek_error()))
1513 if ( ld->ld_error ) {
1514 LDAP_FREE( ld->ld_error );
1517 ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1521 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1525 if ( ld->ld_error ) __etoa(ld->ld_error);
1529 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1530 ld->ld_error ? ld->ld_error : "" ,0,0);
1532 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1533 LBER_SBIOD_LEVEL_TRANSPORT );
1535 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1536 LBER_SBIOD_LEVEL_TRANSPORT );
1542 if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1543 err = tls_cert_verify( ssl );
1544 if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1553 * Call this to do a TLS accept on a sockbuf.
1554 * Everything else is the same as with tls_connect.
1557 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1562 if ( HAS_TLS( sb ) ) {
1563 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1566 ssl = alloc_handle( ctx_arg, 1 );
1567 if ( ssl == NULL ) return -1;
1570 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1571 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1573 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1574 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1577 err = tls_session_accept( ssl );
1580 errno = WSAGetLastError();
1589 if ( update_flags( sb, ssl, err )) return 1;
1592 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1593 gnutls_strerror( err ),0,0 );
1595 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1598 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1599 LBER_SBIOD_LEVEL_TRANSPORT );
1601 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1602 LBER_SBIOD_LEVEL_TRANSPORT );
1608 if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1609 err = tls_cert_verify( ssl );
1610 if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1618 ldap_pvt_tls_inplace ( Sockbuf *sb )
1620 return HAS_TLS( sb ) ? 1 : 0;
1624 ldap_tls_inplace( LDAP *ld )
1628 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1629 sb = ld->ld_defconn->lconn_sb;
1631 } else if ( ld->ld_sb ) {
1638 return ldap_pvt_tls_inplace( sb );
1642 x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1644 BerElementBuffer berbuf;
1645 BerElement *ber = (BerElement *)&berbuf;
1650 ber_init2( ber, cert, LBER_USE_DER );
1651 tag = ber_skip_tag( ber, &len ); /* Sequence */
1652 tag = ber_skip_tag( ber, &len ); /* Sequence */
1653 tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1654 if ( tag == 0xa0 ) /* Version is optional */
1655 tag = ber_get_int( ber, &i ); /* Int: Version */
1656 tag = ber_get_int( ber, &i ); /* Int: Serial */
1657 tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1658 ber_skip_data( ber, len );
1659 if ( !get_subject ) {
1660 tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1662 tag = ber_skip_tag( ber, &len );
1663 ber_skip_data( ber, len );
1664 tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1665 ber_skip_data( ber, len );
1666 tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1668 len = ber_ptrlen( ber );
1669 dn->bv_val = cert->bv_val + len;
1670 dn->bv_len = cert->bv_len - len;
1675 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1677 if ( !session->peer_der_dn.bv_val ) {
1678 const gnutls_datum_t *peer_cert_list;
1682 peer_cert_list = gnutls_certificate_get_peers( session->session,
1684 if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1686 bv.bv_len = peer_cert_list->size;
1687 bv.bv_val = peer_cert_list->data;
1689 x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1690 *dnbv = session->peer_der_dn;
1696 tls_get_cert( SSL *s )
1698 /* If peer cert was bad, treat as if no cert was given */
1699 if (SSL_get_verify_result(s)) {
1700 /* If we can send an alert, do so */
1701 if (SSL_version(s) != SSL2_VERSION) {
1702 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1706 return SSL_get_peer_certificate(s);
1710 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1713 X509 *x = tls_get_cert( session );
1717 return LDAP_INVALID_CREDENTIALS;
1719 xn = X509_get_subject_name(x);
1720 dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1721 dnbv->bv_val = xn->bytes->data;
1724 #endif /* HAVE_GNUTLS */
1727 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1728 LDAPDN_rewrite_dummy *func, unsigned flags )
1730 tls_session *session = s;
1734 rc = tls_get_cert_dn( session, &bvdn );
1735 if ( rc ) return rc;
1737 rc = ldap_X509dn2bv( &bvdn, dn,
1738 (LDAPDN_rewrite_func *)func, flags);
1742 /* what kind of hostname were we given? */
1750 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1752 tls_session *session = s;
1754 const gnutls_datum_t *peer_cert_list;
1757 char altname[NI_MAXHOST];
1760 gnutls_x509_crt_t cert;
1764 char *domain = NULL;
1765 #ifdef LDAP_PF_INET6
1766 struct in6_addr addr;
1768 struct in_addr addr;
1770 int n, len1 = 0, len2 = 0;
1772 time_t now = time(0);
1774 if( ldap_int_hostname &&
1775 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1777 name = ldap_int_hostname;
1782 peer_cert_list = gnutls_certificate_get_peers( session->session,
1784 if ( !peer_cert_list ) {
1785 Debug( LDAP_DEBUG_ANY,
1786 "TLS: unable to get peer certificate.\n",
1788 /* If this was a fatal condition, things would have
1789 * aborted long before now.
1791 return LDAP_SUCCESS;
1793 ret = gnutls_x509_crt_init( &cert );
1795 return LDAP_LOCAL_ERROR;
1796 ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1798 gnutls_x509_crt_deinit( cert );
1799 return LDAP_LOCAL_ERROR;
1802 #ifdef LDAP_PF_INET6
1803 if (name[0] == '[' && strchr(name, ']')) {
1804 char *n2 = ldap_strdup(name+1);
1805 *strchr(n2, ']') = 2;
1806 if (inet_pton(AF_INET6, n2, &addr))
1811 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1812 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1815 if (ntype == IS_DNS) {
1816 len1 = strlen(name);
1817 domain = strchr(name, '.');
1819 len2 = len1 - (domain-name);
1823 for ( i=0, ret=0; ret >= 0; i++ ) {
1824 altnamesize = sizeof(altname);
1825 ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1826 altname, &altnamesize, NULL );
1827 if ( ret < 0 ) break;
1830 if ( altnamesize == 0 ) continue;
1832 if ( ret == GNUTLS_SAN_DNSNAME ) {
1833 if (ntype != IS_DNS) continue;
1835 /* Is this an exact match? */
1836 if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1840 /* Is this a wildcard match? */
1841 if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1842 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1846 } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1847 if (ntype == IS_DNS) continue;
1849 #ifdef LDAP_PF_INET6
1850 if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1854 if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1857 if (!memcmp(altname, &addr, altnamesize)) {
1865 altnamesize = sizeof(altname);
1866 ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1867 0, 0, altname, &altnamesize );
1869 Debug( LDAP_DEBUG_ANY,
1870 "TLS: unable to get common name from peer certificate.\n",
1872 ret = LDAP_CONNECT_ERROR;
1873 if ( ld->ld_error ) {
1874 LDAP_FREE( ld->ld_error );
1876 ld->ld_error = LDAP_STRDUP(
1877 _("TLS: unable to get CN from peer certificate"));
1880 ret = LDAP_LOCAL_ERROR;
1881 if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1884 } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1885 /* Is this a wildcard match? */
1887 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1893 if( ret == LDAP_LOCAL_ERROR ) {
1894 altname[altnamesize] = '\0';
1895 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1896 "common name in certificate (%s).\n",
1898 ret = LDAP_CONNECT_ERROR;
1899 if ( ld->ld_error ) {
1900 LDAP_FREE( ld->ld_error );
1902 ld->ld_error = LDAP_STRDUP(
1903 _("TLS: hostname does not match CN in peer certificate"));
1906 gnutls_x509_crt_deinit( cert );
1910 #else /* !HAVE_GNUTLS */
1913 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1915 int i, ret = LDAP_LOCAL_ERROR;
1920 #ifdef LDAP_PF_INET6
1921 struct in6_addr addr;
1923 struct in_addr addr;
1926 if( ldap_int_hostname &&
1927 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1929 name = ldap_int_hostname;
1934 x = tls_get_cert((SSL *)s);
1936 Debug( LDAP_DEBUG_ANY,
1937 "TLS: unable to get peer certificate.\n",
1939 /* If this was a fatal condition, things would have
1940 * aborted long before now.
1942 return LDAP_SUCCESS;
1945 #ifdef LDAP_PF_INET6
1946 if (name[0] == '[' && strchr(name, ']')) {
1947 char *n2 = ldap_strdup(name+1);
1948 *strchr(n2, ']') = 2;
1949 if (inet_pton(AF_INET6, n2, &addr))
1954 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1955 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1958 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1961 STACK_OF(GENERAL_NAME) *alt;
1963 ex = X509_get_ext(x, i);
1964 alt = X509V3_EXT_d2i(ex);
1966 int n, len1 = 0, len2 = 0;
1967 char *domain = NULL;
1970 if (ntype == IS_DNS) {
1971 len1 = strlen(name);
1972 domain = strchr(name, '.');
1974 len2 = len1 - (domain-name);
1977 n = sk_GENERAL_NAME_num(alt);
1978 for (i=0; i<n; i++) {
1981 gn = sk_GENERAL_NAME_value(alt, i);
1982 if (gn->type == GEN_DNS) {
1983 if (ntype != IS_DNS) continue;
1985 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1986 sl = ASN1_STRING_length(gn->d.ia5);
1989 if (sl == 0) continue;
1991 /* Is this an exact match? */
1992 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1996 /* Is this a wildcard match? */
1997 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1998 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2003 } else if (gn->type == GEN_IPADD) {
2004 if (ntype == IS_DNS) continue;
2006 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2007 sl = ASN1_STRING_length(gn->d.ia5);
2009 #ifdef LDAP_PF_INET6
2010 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2014 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2017 if (!memcmp(sn, &addr, sl)) {
2023 GENERAL_NAMES_free(alt);
2024 if (i < n) { /* Found a match */
2030 if (ret != LDAP_SUCCESS) {
2035 xn = X509_get_subject_name(x);
2036 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2037 buf, sizeof(buf)) == -1)
2039 Debug( LDAP_DEBUG_ANY,
2040 "TLS: unable to get common name from peer certificate.\n",
2042 ret = LDAP_CONNECT_ERROR;
2043 if ( ld->ld_error ) {
2044 LDAP_FREE( ld->ld_error );
2046 ld->ld_error = LDAP_STRDUP(
2047 _("TLS: unable to get CN from peer certificate"));
2049 } else if (strcasecmp(name, buf) == 0 ) {
2052 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2053 char *domain = strchr(name, '.');
2059 dlen = sl - (domain-name);
2062 /* Is this a wildcard match? */
2063 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2069 if( ret == LDAP_LOCAL_ERROR ) {
2070 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2071 "common name in certificate (%s).\n",
2073 ret = LDAP_CONNECT_ERROR;
2074 if ( ld->ld_error ) {
2075 LDAP_FREE( ld->ld_error );
2077 ld->ld_error = LDAP_STRDUP(
2078 _("TLS: hostname does not match CN in peer certificate"));
2087 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2092 case LDAP_OPT_X_TLS_CACERTFILE:
2093 case LDAP_OPT_X_TLS_CACERTDIR:
2094 case LDAP_OPT_X_TLS_CERTFILE:
2095 case LDAP_OPT_X_TLS_KEYFILE:
2096 case LDAP_OPT_X_TLS_RANDOM_FILE:
2097 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2098 case LDAP_OPT_X_TLS_DHFILE:
2100 case LDAP_OPT_X_TLS_CRLFILE:
2102 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2104 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2105 case LDAP_OPT_X_TLS:
2107 if ( strcasecmp( arg, "never" ) == 0 ) {
2108 i = LDAP_OPT_X_TLS_NEVER ;
2110 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
2111 i = LDAP_OPT_X_TLS_DEMAND ;
2113 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
2114 i = LDAP_OPT_X_TLS_ALLOW ;
2116 } else if ( strcasecmp( arg, "try" ) == 0 ) {
2117 i = LDAP_OPT_X_TLS_TRY ;
2119 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2120 ( strcasecmp( arg, "on" ) == 0 ) ||
2121 ( strcasecmp( arg, "yes" ) == 0) ||
2122 ( strcasecmp( arg, "true" ) == 0 ) )
2124 i = LDAP_OPT_X_TLS_HARD ;
2128 return ldap_pvt_tls_set_option( ld, option, &i );
2131 #ifdef HAVE_OPENSSL_CRL
2132 case LDAP_OPT_X_TLS_CRLCHECK:
2134 if ( strcasecmp( arg, "none" ) == 0 ) {
2135 i = LDAP_OPT_X_TLS_CRL_NONE ;
2136 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
2137 i = LDAP_OPT_X_TLS_CRL_PEER ;
2138 } else if ( strcasecmp( arg, "all" ) == 0 ) {
2139 i = LDAP_OPT_X_TLS_CRL_ALL ;
2142 return ldap_pvt_tls_set_option( ld, option, &i );
2151 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2153 struct ldapoptions *lo;
2156 assert( LDAP_VALID( ld ) );
2158 if( !LDAP_VALID( ld ) ) {
2159 return LDAP_OPT_ERROR;
2162 lo = &ld->ld_options;
2165 /* Get pointer to global option structure */
2166 lo = LDAP_INT_GLOBAL_OPT();
2168 return LDAP_NO_MEMORY;
2173 case LDAP_OPT_X_TLS:
2174 *(int *)arg = lo->ldo_tls_mode;
2176 case LDAP_OPT_X_TLS_CTX:
2177 *(void **)arg = lo->ldo_tls_ctx;
2178 if ( lo->ldo_tls_ctx ) {
2179 tls_ctx_ref( lo->ldo_tls_ctx );
2182 case LDAP_OPT_X_TLS_CACERTFILE:
2183 *(char **)arg = lo->ldo_tls_cacertfile ?
2184 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2186 case LDAP_OPT_X_TLS_CACERTDIR:
2187 *(char **)arg = lo->ldo_tls_cacertdir ?
2188 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2190 case LDAP_OPT_X_TLS_CERTFILE:
2191 *(char **)arg = lo->ldo_tls_certfile ?
2192 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2194 case LDAP_OPT_X_TLS_KEYFILE:
2195 *(char **)arg = lo->ldo_tls_keyfile ?
2196 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2198 case LDAP_OPT_X_TLS_DHFILE:
2199 *(char **)arg = lo->ldo_tls_dhfile ?
2200 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2203 case LDAP_OPT_X_TLS_CRLFILE:
2204 *(char **)arg = lo->ldo_tls_crlfile ?
2205 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2208 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2209 *(int *)arg = lo->ldo_tls_require_cert;
2211 #ifdef HAVE_OPENSSL_CRL
2212 case LDAP_OPT_X_TLS_CRLCHECK:
2213 *(int *)arg = lo->ldo_tls_crlcheck;
2216 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2217 *(char **)arg = lo->ldo_tls_ciphersuite ?
2218 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2220 case LDAP_OPT_X_TLS_RANDOM_FILE:
2222 *(char **)arg = tls_opt_randfile ?
2223 LDAP_STRDUP( tls_opt_randfile ) : NULL;
2225 *(char **)arg = NULL;
2228 case LDAP_OPT_X_TLS_SSL_CTX: {
2231 LDAPConn *conn = ld->ld_defconn;
2232 if ( conn != NULL ) {
2233 Sockbuf *sb = conn->lconn_sb;
2234 retval = ldap_pvt_tls_sb_ctx( sb );
2237 *(void **)arg = retval;
2240 case LDAP_OPT_X_TLS_CONNECT_CB:
2241 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2243 case LDAP_OPT_X_TLS_CONNECT_ARG:
2244 *(void **)arg = lo->ldo_tls_connect_arg;
2253 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2255 struct ldapoptions *lo;
2258 assert( LDAP_VALID( ld ) );
2260 if( !LDAP_VALID( ld ) ) {
2261 return LDAP_OPT_ERROR;
2264 lo = &ld->ld_options;
2267 /* Get pointer to global option structure */
2268 lo = LDAP_INT_GLOBAL_OPT();
2270 return LDAP_NO_MEMORY;
2275 case LDAP_OPT_X_TLS:
2276 if ( !arg ) return -1;
2278 switch( *(int *) arg ) {
2279 case LDAP_OPT_X_TLS_NEVER:
2280 case LDAP_OPT_X_TLS_DEMAND:
2281 case LDAP_OPT_X_TLS_ALLOW:
2282 case LDAP_OPT_X_TLS_TRY:
2283 case LDAP_OPT_X_TLS_HARD:
2285 lo->ldo_tls_mode = *(int *)arg;
2292 case LDAP_OPT_X_TLS_CTX:
2293 if ( lo->ldo_tls_ctx )
2294 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2295 lo->ldo_tls_ctx = arg;
2296 tls_ctx_ref( lo->ldo_tls_ctx );
2298 case LDAP_OPT_X_TLS_CONNECT_CB:
2299 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2301 case LDAP_OPT_X_TLS_CONNECT_ARG:
2302 lo->ldo_tls_connect_arg = arg;
2304 case LDAP_OPT_X_TLS_CACERTFILE:
2305 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2306 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2308 case LDAP_OPT_X_TLS_CACERTDIR:
2309 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2310 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2312 case LDAP_OPT_X_TLS_CERTFILE:
2313 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2314 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2316 case LDAP_OPT_X_TLS_KEYFILE:
2317 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2318 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2320 case LDAP_OPT_X_TLS_DHFILE:
2321 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2322 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2325 case LDAP_OPT_X_TLS_CRLFILE:
2326 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2327 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2330 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2331 if ( !arg ) return -1;
2332 switch( *(int *) arg ) {
2333 case LDAP_OPT_X_TLS_NEVER:
2334 case LDAP_OPT_X_TLS_DEMAND:
2335 case LDAP_OPT_X_TLS_ALLOW:
2336 case LDAP_OPT_X_TLS_TRY:
2337 case LDAP_OPT_X_TLS_HARD:
2338 lo->ldo_tls_require_cert = * (int *) arg;
2342 #ifdef HAVE_OPENSSL_CRL
2343 case LDAP_OPT_X_TLS_CRLCHECK:
2344 if ( !arg ) return -1;
2345 switch( *(int *) arg ) {
2346 case LDAP_OPT_X_TLS_CRL_NONE:
2347 case LDAP_OPT_X_TLS_CRL_PEER:
2348 case LDAP_OPT_X_TLS_CRL_ALL:
2349 lo->ldo_tls_crlcheck = * (int *) arg;
2354 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2355 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2356 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2359 case LDAP_OPT_X_TLS_RANDOM_FILE:
2363 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2364 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2368 case LDAP_OPT_X_TLS_NEWCTX:
2369 if ( !arg ) return -1;
2370 if ( lo->ldo_tls_ctx )
2371 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2372 lo->ldo_tls_ctx = NULL;
2373 return ldap_int_tls_init_ctx( lo, *(int *)arg );
2381 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2383 Sockbuf *sb = conn->lconn_sb;
2388 host = srv->lud_host;
2390 host = conn->lconn_server->lud_host;
2393 /* avoid NULL host */
2394 if( host == NULL ) {
2398 (void) ldap_pvt_tls_init();
2401 * Fortunately, the lib uses blocking io...
2403 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2404 ld->ld_errno = LDAP_CONNECT_ERROR;
2405 return (ld->ld_errno);
2408 ssl = ldap_pvt_tls_sb_ctx( sb );
2409 assert( ssl != NULL );
2412 * compare host with name(s) in certificate
2414 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2415 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2416 if (ld->ld_errno != LDAP_SUCCESS) {
2417 return ld->ld_errno;
2421 return LDAP_SUCCESS;
2425 /* Derived from openssl/apps/s_cb.c */
2427 tls_info_cb( const SSL *ssl, int where, int ret )
2431 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2433 w = where & ~SSL_ST_MASK;
2434 if ( w & SSL_ST_CONNECT ) {
2436 } else if ( w & SSL_ST_ACCEPT ) {
2444 state = LDAP_STRDUP( state );
2448 if ( where & SSL_CB_LOOP ) {
2449 Debug( LDAP_DEBUG_TRACE,
2450 "TLS trace: %s:%s\n",
2453 } else if ( where & SSL_CB_ALERT ) {
2454 char *atype = (char *) SSL_alert_type_string_long( ret );
2455 char *adesc = (char *) SSL_alert_desc_string_long( ret );
2456 op = ( where & SSL_CB_READ ) ? "read" : "write";
2459 atype = LDAP_STRDUP( atype );
2463 adesc = LDAP_STRDUP( adesc );
2467 Debug( LDAP_DEBUG_TRACE,
2468 "TLS trace: SSL3 alert %s:%s:%s\n",
2471 if ( atype ) LDAP_FREE( atype );
2472 if ( adesc ) LDAP_FREE( adesc );
2474 } else if ( where & SSL_CB_EXIT ) {
2476 Debug( LDAP_DEBUG_TRACE,
2477 "TLS trace: %s:failed in %s\n",
2479 } else if ( ret < 0 ) {
2480 Debug( LDAP_DEBUG_TRACE,
2481 "TLS trace: %s:error in %s\n",
2486 if ( state ) LDAP_FREE( state );
2491 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2500 char *certerr = NULL;
2502 cert = X509_STORE_CTX_get_current_cert( ctx );
2503 errnum = X509_STORE_CTX_get_error( ctx );
2504 errdepth = X509_STORE_CTX_get_error_depth( ctx );
2507 * X509_get_*_name return pointers to the internal copies of
2508 * those things requested. So do not free them.
2510 subject = X509_get_subject_name( cert );
2511 issuer = X509_get_issuer_name( cert );
2512 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2513 sname = X509_NAME_oneline( subject, NULL, 0 );
2514 iname = X509_NAME_oneline( issuer, NULL, 0 );
2515 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2517 if ( sname ) __etoa( sname );
2518 if ( iname ) __etoa( iname );
2520 certerr = LDAP_STRDUP( certerr );
2524 Debug( LDAP_DEBUG_TRACE,
2525 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
2527 sname ? sname : "-unknown-" );
2528 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2530 Debug( LDAP_DEBUG_ANY,
2531 "TLS certificate verification: Error, %s\n",
2535 CRYPTO_free ( sname );
2537 CRYPTO_free ( iname );
2539 if ( certerr ) LDAP_FREE( certerr );
2545 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2547 (void) tls_verify_cb( ok, ctx );
2551 /* Inspired by ERR_print_errors in OpenSSL */
2553 tls_report_error( void )
2560 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2561 ERR_error_string_n( l, buf, sizeof( buf ) );
2564 file = LDAP_STRDUP( file );
2565 __etoa( (char *)file );
2569 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2572 if ( file ) LDAP_FREE( (void *)file );
2578 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2582 /* FIXME: Pregenerate the key on startup */
2583 /* FIXME: Who frees the key? */
2584 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2587 Debug( LDAP_DEBUG_ANY,
2588 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
2589 key_length, is_export ? "export" : "domestic", 0 );
2596 tls_seed_PRNG( const char *randfile )
2598 #ifndef URANDOM_DEVICE
2599 /* no /dev/urandom (or equiv) */
2601 char buffer[MAXPATHLEN];
2603 if (randfile == NULL) {
2604 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2605 * If $HOME is not set or buffer too small to hold the pathname,
2606 * an error occurs. - From RAND_file_name() man page.
2607 * The fact is that when $HOME is NULL, .rnd is used.
2609 randfile = RAND_file_name( buffer, sizeof( buffer ) );
2611 } else if (RAND_egd(randfile) > 0) {
2616 if (randfile == NULL) {
2617 Debug( LDAP_DEBUG_ANY,
2618 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2623 total = RAND_load_file(randfile, -1);
2625 if (RAND_status() == 0) {
2626 Debug( LDAP_DEBUG_ANY,
2627 "TLS: PRNG not been seeded with enough data\n",
2632 /* assume if there was enough bits to seed that it's okay
2633 * to write derived bits to the file
2635 RAND_write_file(randfile);
2649 /* From the OpenSSL 0.9.7 distro */
2650 static const char dhpem512[] =
2651 "-----BEGIN DH PARAMETERS-----\n\
2652 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2653 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2654 -----END DH PARAMETERS-----\n";
2656 static const char dhpem1024[] =
2657 "-----BEGIN DH PARAMETERS-----\n\
2658 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2659 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2660 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2661 -----END DH PARAMETERS-----\n";
2663 static const char dhpem2048[] =
2664 "-----BEGIN DH PARAMETERS-----\n\
2665 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2666 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2667 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2668 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2669 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2670 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2671 -----END DH PARAMETERS-----\n";
2673 static const char dhpem4096[] =
2674 "-----BEGIN DH PARAMETERS-----\n\
2675 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2676 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2677 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2678 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2679 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2680 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2681 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2682 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2683 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2684 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2685 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2686 -----END DH PARAMETERS-----\n";
2688 static const struct dhinfo dhpem[] = {
2689 { 512, dhpem512, sizeof(dhpem512) },
2690 { 1024, dhpem1024, sizeof(dhpem1024) },
2691 { 2048, dhpem2048, sizeof(dhpem2048) },
2692 { 4096, dhpem4096, sizeof(dhpem4096) },
2697 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2699 struct dhplist *p = NULL;
2704 /* Do we have params of this length already? */
2705 #ifdef LDAP_R_COMPILE
2706 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2708 for ( p = dhparams; p; p=p->next ) {
2709 if ( p->keylength == key_length ) {
2710 #ifdef LDAP_R_COMPILE
2711 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2717 /* No - check for hardcoded params */
2719 for (i=0; dhpem[i].keylength; i++) {
2720 if ( dhpem[i].keylength == key_length ) {
2721 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2727 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2731 /* Generating on the fly is expensive/slow... */
2733 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2736 p = LDAP_MALLOC( sizeof(struct dhplist) );
2738 p->keylength = key_length;
2745 #ifdef LDAP_R_COMPILE
2746 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2752 #endif /* HAVE_OPENSSL */
2755 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2760 if (HAS_TLS( sb )) {
2761 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2770 ldap_pvt_tls_get_strength( void *s )
2775 c = SSL_get_current_cipher((SSL *)s);
2776 return SSL_CIPHER_get_bits(c, NULL);
2777 #elif defined(HAVE_GNUTLS)
2778 tls_session *session = s;
2779 gnutls_cipher_algorithm_t c;
2781 c = gnutls_cipher_get( session->session );
2782 return gnutls_cipher_get_key_size( c );
2790 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2793 struct berval der_dn;
2799 x = SSL_get_certificate((SSL *)s);
2801 if (!x) return LDAP_INVALID_CREDENTIALS;
2803 xn = X509_get_subject_name(x);
2804 der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2805 der_dn.bv_val = xn->bytes->data;
2806 #elif defined(HAVE_GNUTLS)
2807 tls_session *session = s;
2808 const gnutls_datum_t *x;
2811 x = gnutls_certificate_get_ours( session->session );
2813 if (!x) return LDAP_INVALID_CREDENTIALS;
2815 bv.bv_val = x->data;
2816 bv.bv_len = x->size;
2818 x509_cert_get_dn( &bv, &der_dn, 1 );
2820 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2822 #else /* !HAVE_TLS */
2823 return LDAP_NOT_SUPPORTED;
2828 ldap_start_tls( LDAP *ld,
2829 LDAPControl **serverctrls,
2830 LDAPControl **clientctrls,
2833 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2834 NULL, serverctrls, clientctrls, msgidp );
2838 ldap_install_tls( LDAP *ld )
2841 return LDAP_NOT_SUPPORTED;
2843 if ( ldap_tls_inplace( ld ) ) {
2844 return LDAP_LOCAL_ERROR;
2847 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2852 ldap_start_tls_s ( LDAP *ld,
2853 LDAPControl **serverctrls,
2854 LDAPControl **clientctrls )
2857 return LDAP_NOT_SUPPORTED;
2860 char *rspoid = NULL;
2861 struct berval *rspdata = NULL;
2863 /* XXYYZ: this initiates operation only on default connection! */
2865 if ( ldap_tls_inplace( ld ) ) {
2866 return LDAP_LOCAL_ERROR;
2869 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2870 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2872 if ( rspoid != NULL ) {
2876 if ( rspdata != NULL ) {
2877 ber_bvfree( rspdata );
2880 if ( rc == LDAP_SUCCESS ) {
2881 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2888 /* These tags probably all belong in lber.h, but they're
2889 * not normally encountered when processing LDAP, so maybe
2890 * they belong somewhere else instead.
2893 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2895 /* Tags for string types used in a DirectoryString.
2897 * Note that IA5string is not one of the defined choices for
2898 * DirectoryString in X.520, but it gets used for email AVAs.
2900 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2901 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2902 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2903 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2904 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2905 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2908 find_oid( struct berval *oid )
2912 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2913 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2914 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2920 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2921 * x509_name must be raw DER. If func is non-NULL, the
2922 * constructed DN will use numeric OIDs to identify attributeTypes,
2923 * and the func() will be invoked to rewrite the DN with the given
2926 * Otherwise the DN will use shortNames from a hardcoded table.
2929 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2934 LDAPAVA *newAVA, *baseAVA;
2935 BerElementBuffer berbuf;
2936 BerElement *ber = (BerElement *)&berbuf;
2937 char oids[8192], *oidptr = oids, *oidbuf = NULL;
2939 char *dn_end, *rdn_end;
2940 int i, navas, nrdns, rc = LDAP_SUCCESS;
2941 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2947 struct berval Oid, Val, oid2, *in = x509_name;
2949 assert( bv != NULL );
2957 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2958 * An AVA is a SEQUENCE of attr and value.
2959 * Count the number of AVAs and RDNs
2961 ber_init2( ber, in, LBER_USE_DER );
2962 tag = ber_peek_tag( ber, &len );
2963 if ( tag != LBER_SEQUENCE )
2964 return LDAP_DECODING_ERROR;
2966 for ( tag = ber_first_element( ber, &len, &dn_end );
2968 tag = ber_next_element( ber, &len, dn_end )) {
2970 for ( tag = ber_first_element( ber, &len, &rdn_end );
2971 tag == LBER_SEQUENCE;
2972 tag = ber_next_element( ber, &len, rdn_end )) {
2973 tag = ber_skip_tag( ber, &len );
2974 ber_skip_data( ber, len );
2979 /* Allocate the DN/RDN/AVA stuff as a single block */
2980 dnsize = sizeof(LDAPRDN) * (nrdns+1);
2981 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
2982 dnsize += sizeof(LDAPAVA) * navas;
2983 if (dnsize > sizeof(ptrs)) {
2984 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
2985 if ( newDN == NULL )
2986 return LDAP_NO_MEMORY;
2988 newDN = (LDAPDN)(char *)ptrs;
2991 newDN[nrdns] = NULL;
2992 newRDN = (LDAPRDN)(newDN + nrdns+1);
2993 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
2996 /* Rewind and start extracting */
2999 tag = ber_first_element( ber, &len, &dn_end );
3000 for ( i = nrdns - 1; i >= 0; i-- ) {
3003 for ( tag = ber_first_element( ber, &len, &rdn_end );
3004 tag == LBER_SEQUENCE;
3005 tag = ber_next_element( ber, &len, rdn_end )) {
3008 tag = ber_skip_tag( ber, &len );
3009 tag = ber_get_stringbv( ber, &Oid, 0 );
3010 if ( tag != LBER_TAG_OID ) {
3011 rc = LDAP_DECODING_ERROR;
3015 oid2.bv_val = oidptr;
3016 oid2.bv_len = oidrem;
3017 ber_decode_oid( &Oid, &oid2 );
3018 oidname = find_oid( &oid2 );
3020 newAVA->la_attr = oid2;
3021 oidptr += oid2.bv_len + 1;
3022 oidrem -= oid2.bv_len + 1;
3024 /* Running out of OID buffer space? */
3026 if ( oidsize == 0 ) {
3027 oidsize = sizeof(oids) * 2;
3029 oidbuf = LDAP_MALLOC( oidsize );
3030 if ( oidbuf == NULL ) goto nomem;
3034 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3035 if ( oidbuf == NULL ) goto nomem;
3036 /* Buffer moved! Fix AVA pointers */
3037 if ( old != oidbuf ) {
3039 long dif = oidbuf - old;
3041 for (a=baseAVA; a<=newAVA; a++){
3042 if (a->la_attr.bv_val >= old &&
3043 a->la_attr.bv_val <= (old + oidsize))
3044 a->la_attr.bv_val += dif;
3047 oidptr = oidbuf + oidsize - oidrem;
3054 newAVA->la_attr = oidname->oid;
3056 newAVA->la_attr = oidname->name;
3059 tag = ber_get_stringbv( ber, &Val, 0 );
3061 case LBER_TAG_UNIVERSAL:
3062 /* This uses 32-bit ISO 10646-1 */
3063 csize = 4; goto to_utf8;
3065 /* This uses 16-bit ISO 10646-1 */
3066 csize = 2; goto to_utf8;
3067 case LBER_TAG_TELETEX:
3068 /* This uses 8-bit, assume ISO 8859-1 */
3070 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3071 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3072 if (rc != LDAP_SUCCESS) goto nomem;
3073 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3076 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3077 /* This is already in UTF-8 encoding */
3079 case LBER_TAG_PRINTABLE:
3080 /* These are always 7-bit strings */
3081 newAVA->la_value = Val;
3085 newAVA->la_private = NULL;
3086 newAVA->la_flags = LDAP_AVA_STRING;
3090 tag = ber_next_element( ber, &len, dn_end );
3094 rc = func( newDN, flags, NULL );
3095 if ( rc != LDAP_SUCCESS )
3099 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3102 for (;baseAVA < newAVA; baseAVA++) {
3103 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3104 LDAP_FREE( baseAVA->la_attr.bv_val );
3105 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3106 LDAP_FREE( baseAVA->la_value.bv_val );
3110 LDAP_FREE( oidbuf );
3111 if ( newDN != (LDAPDN)(char *) ptrs )