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 )
193 #ifdef LDAP_R_COMPILE
194 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
196 refcount = --ctx->refcount;
197 #ifdef LDAP_R_COMPILE
198 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
202 LDAP_FREE( ctx->kx_list );
203 gnutls_certificate_free_credentials( ctx->cred );
208 tls_ctx_new ( struct ldapoptions *lo )
212 ctx = ber_memcalloc ( 1, sizeof (*ctx) );
215 if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
220 #ifdef LDAP_R_COMPILE
221 ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
228 tls_ctx_ref( tls_ctx *ctx )
230 #ifdef LDAP_R_COMPILE
231 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
234 #ifdef LDAP_R_COMPILE
235 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
240 tls_session_new ( tls_ctx * ctx, int is_server )
242 tls_session *session;
244 session = ber_memcalloc ( 1, sizeof (*session) );
249 gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
250 gnutls_set_default_priority( session->session );
251 if ( ctx->kx_list ) {
252 gnutls_kx_set_priority( session->session, ctx->kx_list );
253 gnutls_cipher_set_priority( session->session, ctx->cipher_list );
254 gnutls_mac_set_priority( session->session, ctx->mac_list );
257 gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, ctx->cred );
261 if ( ctx->lo->ldo_tls_require_cert ) {
262 flag = GNUTLS_CERT_REQUEST;
263 if ( ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
264 ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
265 flag = GNUTLS_CERT_REQUIRE;
266 gnutls_certificate_server_set_request( session->session, flag );
273 tls_session_free ( tls_session * session )
275 ber_memfree ( session );
278 #define tls_session_connect( ssl ) gnutls_handshake( ssl->session )
279 #define tls_session_accept( ssl ) gnutls_handshake( ssl->session )
281 /* suites is a string of colon-separated cipher suite names. */
283 tls_parse_ciphers( tls_ctx *ctx, char *suites )
287 int *list, nkx = 0, ncipher = 0, nmac = 0;
288 int *kx, *cipher, *mac;
293 end = strchr(ptr, ':');
298 for (i=0; i<n_ciphers; i++) {
299 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
304 if ( i == n_ciphers ) {
305 /* unrecognized cipher suite */
310 /* Space for all 3 lists */
311 list = LDAP_MALLOC( (num+1) * sizeof(int) * 3 );
320 end = strchr(ptr, ':');
325 for (i=0; i<n_ciphers; i++) {
326 /* For each cipher suite, insert its algorithms into
327 * their respective priority lists. Make sure they
328 * only appear once in each list.
330 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
331 for (j=0; j<nkx; j++)
332 if ( kx[j] == ciphers[i].kx )
335 kx[nkx++] = ciphers[i].kx;
336 for (j=0; j<ncipher; j++)
337 if ( cipher[j] == ciphers[i].cipher )
340 cipher[ncipher++] = ciphers[i].cipher;
341 for (j=0; j<nmac; j++)
342 if ( mac[j] == ciphers[i].mac )
345 mac[nmac++] = ciphers[i].mac;
354 ctx->cipher_list = cipher;
361 typedef SSL_CTX tls_ctx;
362 typedef SSL tls_session;
364 static int tls_opt_trace = 1;
365 static char *tls_opt_randfile = NULL;
367 static void tls_report_error( void );
369 static void tls_info_cb( const SSL *ssl, int where, int ret );
370 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
371 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
372 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
374 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
376 typedef struct dhplist {
377 struct dhplist *next;
382 static dhplist *dhparams;
384 static int tls_seed_PRNG( const char *randfile );
386 #ifdef LDAP_R_COMPILE
388 * provide mutexes for the SSLeay library.
390 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
392 static void tls_locking_cb( int mode, int type, const char *file, int line )
394 if ( mode & CRYPTO_LOCK ) {
395 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
397 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
401 static void tls_init_threads( void )
405 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
406 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
408 CRYPTO_set_locking_callback( tls_locking_cb );
409 CRYPTO_set_id_callback( ldap_pvt_thread_self );
410 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
411 * is an integral type that fits in an unsigned long
414 #endif /* LDAP_R_COMPILE */
417 ldap_pvt_tls_ctx_free ( void *c )
424 tls_ctx_new( struct ldapoptions *lo )
426 return SSL_CTX_new( SSLv23_method() );
430 tls_ctx_ref( void *c )
433 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
437 tls_session_new( tls_ctx *ctx, int is_server )
439 return SSL_new( ctx );
442 #define tls_session_connect( ssl ) SSL_connect( ssl )
443 #define tls_session_accept( ssl ) SSL_accept( ssl )
445 static STACK_OF(X509_NAME) *
446 get_ca_list( char * bundle, char * dir )
448 STACK_OF(X509_NAME) *ca_list = NULL;
451 ca_list = SSL_load_client_CA_file( bundle );
453 #if defined(HAVE_DIRENT_H) || defined(dirent)
458 ca_list = sk_X509_NAME_new_null();
461 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
463 sk_X509_NAME_free( ca_list );
471 #endif /* HAVE_GNUTLS */
473 #ifdef LDAP_R_COMPILE
475 * an extra mutex for the default ctx.
477 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
481 ldap_int_tls_destroy( struct ldapoptions *lo )
483 if ( lo->ldo_tls_ctx ) {
484 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
485 lo->ldo_tls_ctx = NULL;
488 if ( lo->ldo_tls_certfile ) {
489 LDAP_FREE( lo->ldo_tls_certfile );
490 lo->ldo_tls_certfile = NULL;
492 if ( lo->ldo_tls_keyfile ) {
493 LDAP_FREE( lo->ldo_tls_keyfile );
494 lo->ldo_tls_keyfile = NULL;
496 if ( lo->ldo_tls_dhfile ) {
497 LDAP_FREE( lo->ldo_tls_dhfile );
498 lo->ldo_tls_dhfile = NULL;
500 if ( lo->ldo_tls_cacertfile ) {
501 LDAP_FREE( lo->ldo_tls_cacertfile );
502 lo->ldo_tls_cacertfile = NULL;
504 if ( lo->ldo_tls_cacertdir ) {
505 LDAP_FREE( lo->ldo_tls_cacertdir );
506 lo->ldo_tls_cacertdir = NULL;
508 if ( lo->ldo_tls_ciphersuite ) {
509 LDAP_FREE( lo->ldo_tls_ciphersuite );
510 lo->ldo_tls_ciphersuite = NULL;
513 if ( lo->ldo_tls_crlfile ) {
514 LDAP_FREE( lo->ldo_tls_crlfile );
515 lo->ldo_tls_crlfile = NULL;
521 * Tear down the TLS subsystem. Should only be called once.
524 ldap_pvt_tls_destroy( void )
526 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
528 ldap_int_tls_destroy( lo );
531 LDAP_FREE( ciphers );
534 gnutls_global_deinit();
540 if ( tls_opt_randfile ) {
541 LDAP_FREE( tls_opt_randfile );
542 tls_opt_randfile = NULL;
548 * Initialize TLS subsystem. Should be called only once.
551 ldap_pvt_tls_init( void )
553 static int tls_initialized = 0;
555 if ( tls_initialized++ ) return 0;
557 #ifdef LDAP_R_COMPILE
559 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
563 gnutls_global_init ();
565 /* GNUtls cipher suite handling: The library ought to parse suite
566 * names for us, but it doesn't. It will return a list of suite names
567 * that it supports, so we can do parsing ourselves. It ought to tell
568 * us how long the list is, but it doesn't do that either, so we just
569 * have to count it manually...
573 tls_cipher_suite *ptr, tmp;
576 while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
577 &tmp.mac, &tmp.version ))
582 ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
585 for ( i=0; i<n_ciphers; i++ ) {
586 ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
587 &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
588 &ciphers[i].version );
592 #else /* !HAVE_GNUTLS */
596 char *file = LDAP_STRDUP( tls_opt_randfile );
597 if ( file ) __atoe( file );
598 (void) tls_seed_PRNG( file );
602 (void) tls_seed_PRNG( tls_opt_randfile );
605 SSL_load_error_strings();
606 SSLeay_add_ssl_algorithms();
608 /* FIXME: mod_ssl does this */
609 X509V3_add_standard_extensions();
611 #endif /* HAVE_GNUTLS */
616 * initialize a new TLS context
619 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
622 char *ciphersuite = lo->ldo_tls_ciphersuite;
623 char *cacertfile = lo->ldo_tls_cacertfile;
624 char *cacertdir = lo->ldo_tls_cacertdir;
625 char *certfile = lo->ldo_tls_certfile;
626 char *keyfile = lo->ldo_tls_keyfile;
628 char *crlfile = lo->ldo_tls_crlfile;
630 char *dhfile = lo->ldo_tls_dhfile;
633 if ( lo->ldo_tls_ctx )
638 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
639 /* minimum configuration not provided */
640 return LDAP_NOT_SUPPORTED;
644 /* This ASCII/EBCDIC handling is a real pain! */
646 ciphersuite = LDAP_STRDUP( ciphersuite );
647 __atoe( ciphersuite );
650 cacertfile = LDAP_STRDUP( cacertfile );
651 __atoe( cacertfile );
654 certfile = LDAP_STRDUP( certfile );
658 keyfile = LDAP_STRDUP( keyfile );
663 crlfile = LDAP_STRDUP( crlfile );
668 cacertdir = LDAP_STRDUP( cacertdir );
672 dhfile = LDAP_STRDUP( dhfile );
677 lo->ldo_tls_ctx = tls_ctx_new( lo );
678 if ( lo->ldo_tls_ctx == NULL ) {
680 Debug( LDAP_DEBUG_ANY,
681 "TLS: could not allocate default ctx.\n",
684 Debug( LDAP_DEBUG_ANY,
685 "TLS: could not allocate default ctx (%lu).\n",
686 ERR_peek_error(),0,0);
693 if ( lo->ldo_tls_ciphersuite &&
694 tls_parse_ciphers( lo->ldo_tls_ctx,
696 Debug( LDAP_DEBUG_ANY,
697 "TLS: could not set cipher list %s.\n",
698 lo->ldo_tls_ciphersuite, 0, 0 );
703 if (lo->ldo_tls_cacertdir != NULL) {
704 Debug( LDAP_DEBUG_ANY,
705 "TLS: warning: cacertdir not implemented for gnutls\n",
709 if (lo->ldo_tls_cacertfile != NULL) {
710 rc = gnutls_certificate_set_x509_trust_file(
711 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
713 GNUTLS_X509_FMT_PEM );
714 if ( rc < 0 ) goto error_exit;
717 if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
718 rc = gnutls_certificate_set_x509_key_file(
719 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
722 GNUTLS_X509_FMT_PEM );
723 if ( rc ) goto error_exit;
724 } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
725 Debug( LDAP_DEBUG_ANY,
726 "TLS: only one of certfile and keyfile specified\n",
732 if ( lo->ldo_tls_dhfile ) {
733 Debug( LDAP_DEBUG_ANY,
734 "TLS: warning: ignoring dhfile\n",
738 if ( lo->ldo_tls_crlfile ) {
739 rc = gnutls_certificate_set_x509_crl_file(
740 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
742 GNUTLS_X509_FMT_PEM );
743 if ( rc < 0 ) goto error_exit;
746 gnutls_dh_params_init (&((tls_ctx*)
747 lo->ldo_tls_ctx)->dh_params);
748 gnutls_dh_params_generate2 (((tls_ctx*)
749 lo->ldo_tls_ctx)->dh_params,
753 #else /* !HAVE_GNUTLS */
756 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
757 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
760 if ( lo->ldo_tls_ciphersuite &&
761 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
763 Debug( LDAP_DEBUG_ANY,
764 "TLS: could not set cipher list %s.\n",
765 lo->ldo_tls_ciphersuite, 0, 0 );
771 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
772 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
773 cacertfile, cacertdir ) ||
774 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
776 Debug( LDAP_DEBUG_ANY, "TLS: "
777 "could not load verify locations (file:`%s',dir:`%s').\n",
778 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
779 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
787 STACK_OF(X509_NAME) *calist;
788 /* List of CA names to send to a client */
789 calist = get_ca_list( cacertfile, cacertdir );
791 Debug( LDAP_DEBUG_ANY, "TLS: "
792 "could not load client CA list (file:`%s',dir:`%s').\n",
793 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
794 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
801 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
805 if ( lo->ldo_tls_certfile &&
806 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
807 certfile, SSL_FILETYPE_PEM ) )
809 Debug( LDAP_DEBUG_ANY,
810 "TLS: could not use certificate `%s'.\n",
811 lo->ldo_tls_certfile,0,0);
817 /* Key validity is checked automatically if cert has already been set */
818 if ( lo->ldo_tls_keyfile &&
819 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
820 keyfile, SSL_FILETYPE_PEM ) )
822 Debug( LDAP_DEBUG_ANY,
823 "TLS: could not use key file `%s'.\n",
824 lo->ldo_tls_keyfile,0,0);
830 if ( lo->ldo_tls_dhfile ) {
835 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
836 Debug( LDAP_DEBUG_ANY,
837 "TLS: could not use DH parameters file `%s'.\n",
838 lo->ldo_tls_dhfile,0,0);
843 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
844 p = LDAP_MALLOC( sizeof(dhplist) );
846 p->keylength = DH_size( dh ) * 8;
855 if ( tls_opt_trace ) {
856 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
860 if ( lo->ldo_tls_require_cert ) {
862 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
863 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
864 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
868 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
869 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
870 tls_verify_ok : tls_verify_cb );
871 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
872 if ( lo->ldo_tls_dhfile ) {
873 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
875 #ifdef HAVE_OPENSSL_CRL
876 if ( lo->ldo_tls_crlcheck ) {
877 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
878 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
879 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
880 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
881 X509_STORE_set_flags( x509_s,
882 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
887 #endif /* HAVE_GNUTLS */
890 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
891 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
892 lo->ldo_tls_ctx = NULL;
895 LDAP_FREE( ciphersuite );
896 LDAP_FREE( cacertfile );
897 LDAP_FREE( certfile );
898 LDAP_FREE( keyfile );
900 LDAP_FREE( crlfile );
902 LDAP_FREE( cacertdir );
910 * initialize the default context
913 ldap_pvt_tls_init_def_ctx( int is_server )
915 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
917 #ifdef LDAP_R_COMPILE
918 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
920 rc = ldap_int_tls_init_ctx( lo, is_server );
921 #ifdef LDAP_R_COMPILE
922 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
928 alloc_handle( void *ctx_arg, int is_server )
936 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
937 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
938 ctx = lo->ldo_tls_ctx;
941 ssl = tls_session_new( ctx, is_server );
943 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
950 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
952 sb->sb_trans_needs_read = 0;
953 sb->sb_trans_needs_write = 0;
956 if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
959 switch (gnutls_record_get_direction (ssl->session)) {
961 sb->sb_trans_needs_read = 1;
964 sb->sb_trans_needs_write = 1;
967 #else /* !HAVE_GNUTLS */
968 rc = SSL_get_error(ssl, rc);
969 if (rc == SSL_ERROR_WANT_READ) {
970 sb->sb_trans_needs_read = 1;
973 } else if (rc == SSL_ERROR_WANT_WRITE) {
974 sb->sb_trans_needs_write = 1;
977 } else if (rc == SSL_ERROR_WANT_CONNECT) {
980 #endif /* HAVE_GNUTLS */
985 * TLS support for LBER Sockbufs
990 Sockbuf_IO_Desc *sbiod;
996 sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
1000 if ( buf == NULL || len <= 0 ) return 0;
1002 p = (struct tls_data *)ptr;
1004 if ( p == NULL || p->sbiod == NULL ) {
1008 return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1012 sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1016 if ( buf == NULL || len <= 0 ) return 0;
1018 p = (struct tls_data *)ptr;
1020 if ( p == NULL || p->sbiod == NULL ) {
1024 return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1028 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1031 tls_session *session = arg;
1033 assert( sbiod != NULL );
1035 p = LBER_MALLOC( sizeof( *p ) );
1040 gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1041 gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1042 gnutls_transport_set_push_function( session->session, sb_gtls_send );
1045 sbiod->sbiod_pvt = p;
1050 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1054 assert( sbiod != NULL );
1055 assert( sbiod->sbiod_pvt != NULL );
1057 p = (struct tls_data *)sbiod->sbiod_pvt;
1058 gnutls_deinit ( p->ssl->session );
1059 LBER_FREE( p->ssl );
1060 LBER_FREE( sbiod->sbiod_pvt );
1061 sbiod->sbiod_pvt = NULL;
1066 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1070 assert( sbiod != NULL );
1071 assert( sbiod->sbiod_pvt != NULL );
1073 p = (struct tls_data *)sbiod->sbiod_pvt;
1074 gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1079 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1083 assert( sbiod != NULL );
1084 assert( sbiod->sbiod_pvt != NULL );
1086 p = (struct tls_data *)sbiod->sbiod_pvt;
1088 if ( opt == LBER_SB_OPT_GET_SSL ) {
1089 *((tls_session **)arg) = p->ssl;
1092 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1093 if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1098 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1102 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1108 assert( sbiod != NULL );
1109 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1111 p = (struct tls_data *)sbiod->sbiod_pvt;
1113 ret = gnutls_record_recv ( p->ssl->session, buf, len );
1115 case GNUTLS_E_INTERRUPTED:
1116 case GNUTLS_E_AGAIN:
1117 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1118 sock_errset(EWOULDBLOCK);
1121 case GNUTLS_E_REHANDSHAKE:
1122 for ( ret = gnutls_handshake ( p->ssl->session );
1123 ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1124 ret = gnutls_handshake ( p->ssl->session ) );
1125 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1129 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1135 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1141 assert( sbiod != NULL );
1142 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1144 p = (struct tls_data *)sbiod->sbiod_pvt;
1146 ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1148 if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1149 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1150 sock_errset(EWOULDBLOCK);
1153 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1158 #else /* !HAVE_GNUTLS */
1161 sb_tls_bio_create( BIO *b ) {
1170 sb_tls_bio_destroy( BIO *b )
1172 if ( b == NULL ) return 0;
1174 b->ptr = NULL; /* sb_tls_remove() will free it */
1181 sb_tls_bio_read( BIO *b, char *buf, int len )
1186 if ( buf == NULL || len <= 0 ) return 0;
1188 p = (struct tls_data *)b->ptr;
1190 if ( p == NULL || p->sbiod == NULL ) {
1194 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1196 BIO_clear_retry_flags( b );
1198 int err = sock_errno();
1199 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1200 BIO_set_retry_read( b );
1208 sb_tls_bio_write( BIO *b, const char *buf, int len )
1213 if ( buf == NULL || len <= 0 ) return 0;
1215 p = (struct tls_data *)b->ptr;
1217 if ( p == NULL || p->sbiod == NULL ) {
1221 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1223 BIO_clear_retry_flags( b );
1225 int err = sock_errno();
1226 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1227 BIO_set_retry_write( b );
1235 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1237 if ( cmd == BIO_CTRL_FLUSH ) {
1238 /* The OpenSSL library needs this */
1245 sb_tls_bio_gets( BIO *b, char *buf, int len )
1251 sb_tls_bio_puts( BIO *b, const char *str )
1253 return sb_tls_bio_write( b, str, strlen( str ) );
1256 static BIO_METHOD sb_tls_bio_method =
1258 ( 100 | 0x400 ), /* it's a source/sink BIO */
1270 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1275 assert( sbiod != NULL );
1277 p = LBER_MALLOC( sizeof( *p ) );
1282 p->ssl = (SSL *)arg;
1284 bio = BIO_new( &sb_tls_bio_method );
1285 bio->ptr = (void *)p;
1286 SSL_set_bio( p->ssl, bio, bio );
1287 sbiod->sbiod_pvt = p;
1292 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1296 assert( sbiod != NULL );
1297 assert( sbiod->sbiod_pvt != NULL );
1299 p = (struct tls_data *)sbiod->sbiod_pvt;
1301 LBER_FREE( sbiod->sbiod_pvt );
1302 sbiod->sbiod_pvt = NULL;
1307 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1311 assert( sbiod != NULL );
1312 assert( sbiod->sbiod_pvt != NULL );
1314 p = (struct tls_data *)sbiod->sbiod_pvt;
1315 SSL_shutdown( p->ssl );
1320 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1324 assert( sbiod != NULL );
1325 assert( sbiod->sbiod_pvt != NULL );
1327 p = (struct tls_data *)sbiod->sbiod_pvt;
1329 if ( opt == LBER_SB_OPT_GET_SSL ) {
1330 *((SSL **)arg) = p->ssl;
1333 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1334 if( SSL_pending( p->ssl ) > 0 ) {
1339 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1343 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1349 assert( sbiod != NULL );
1350 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1352 p = (struct tls_data *)sbiod->sbiod_pvt;
1354 ret = SSL_read( p->ssl, (char *)buf, len );
1356 errno = WSAGetLastError();
1358 err = SSL_get_error( p->ssl, ret );
1359 if (err == SSL_ERROR_WANT_READ ) {
1360 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1361 sock_errset(EWOULDBLOCK);
1364 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1369 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1375 assert( sbiod != NULL );
1376 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1378 p = (struct tls_data *)sbiod->sbiod_pvt;
1380 ret = SSL_write( p->ssl, (char *)buf, len );
1382 errno = WSAGetLastError();
1384 err = SSL_get_error( p->ssl, ret );
1385 if (err == SSL_ERROR_WANT_WRITE ) {
1386 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1387 sock_errset(EWOULDBLOCK);
1390 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1397 static Sockbuf_IO sb_tls_sbio =
1399 sb_tls_setup, /* sbi_setup */
1400 sb_tls_remove, /* sbi_remove */
1401 sb_tls_ctrl, /* sbi_ctrl */
1402 sb_tls_read, /* sbi_read */
1403 sb_tls_write, /* sbi_write */
1404 sb_tls_close /* sbi_close */
1408 /* Certs are not automatically varified during the handshake */
1410 tls_cert_verify( tls_session *ssl )
1412 unsigned int status = 0;
1414 time_t now = time(0);
1416 err = gnutls_certificate_verify_peers2( ssl->session, &status );
1418 Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1423 Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1427 if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1428 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1432 if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1433 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1439 #endif /* HAVE_GNUTLS */
1442 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
1443 * a SSL_CTX * or NULL, in which case the default ctx is used.
1447 * 0 - Success. Connection is ready for communication.
1448 * <0 - Error. Can't create a TLS stream.
1449 * >0 - Partial success.
1450 * Do a select (using information from lber_pvt_sb_needs_{read,write}
1455 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1457 Sockbuf *sb = conn->lconn_sb;
1461 if ( HAS_TLS( sb ) ) {
1462 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1465 struct ldapoptions *lo;
1468 ctx = ld->ld_options.ldo_tls_ctx;
1470 ssl = alloc_handle( ctx, 0 );
1472 if ( ssl == NULL ) return -1;
1475 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1476 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1478 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1479 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1481 lo = LDAP_INT_GLOBAL_OPT();
1483 ctx = lo->ldo_tls_ctx;
1484 ld->ld_options.ldo_tls_ctx = ctx;
1487 if ( ld->ld_options.ldo_tls_connect_cb )
1488 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1489 ld->ld_options.ldo_tls_connect_arg );
1490 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1491 ld->ld_options.ldo_tls_connect_cb )
1492 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1495 err = tls_session_connect( ssl );
1498 errno = WSAGetLastError();
1507 if ( update_flags( sb, ssl, err )) {
1512 if ((err = ERR_peek_error()))
1515 if ( ld->ld_error ) {
1516 LDAP_FREE( ld->ld_error );
1519 ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1523 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1527 if ( ld->ld_error ) __etoa(ld->ld_error);
1531 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1532 ld->ld_error ? ld->ld_error : "" ,0,0);
1534 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1535 LBER_SBIOD_LEVEL_TRANSPORT );
1537 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1538 LBER_SBIOD_LEVEL_TRANSPORT );
1544 if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1545 err = tls_cert_verify( ssl );
1546 if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1555 * Call this to do a TLS accept on a sockbuf.
1556 * Everything else is the same as with tls_connect.
1559 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1564 if ( HAS_TLS( sb ) ) {
1565 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1568 ssl = alloc_handle( ctx_arg, 1 );
1569 if ( ssl == NULL ) return -1;
1572 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1573 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1575 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1576 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1579 err = tls_session_accept( ssl );
1582 errno = WSAGetLastError();
1591 if ( update_flags( sb, ssl, err )) return 1;
1594 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1595 gnutls_strerror( err ),0,0 );
1597 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1600 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1601 LBER_SBIOD_LEVEL_TRANSPORT );
1603 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1604 LBER_SBIOD_LEVEL_TRANSPORT );
1610 if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1611 err = tls_cert_verify( ssl );
1612 if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1620 ldap_pvt_tls_inplace ( Sockbuf *sb )
1622 return HAS_TLS( sb ) ? 1 : 0;
1626 ldap_tls_inplace( LDAP *ld )
1630 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1631 sb = ld->ld_defconn->lconn_sb;
1633 } else if ( ld->ld_sb ) {
1640 return ldap_pvt_tls_inplace( sb );
1644 x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1646 BerElementBuffer berbuf;
1647 BerElement *ber = (BerElement *)&berbuf;
1652 ber_init2( ber, cert, LBER_USE_DER );
1653 tag = ber_skip_tag( ber, &len ); /* Sequence */
1654 tag = ber_skip_tag( ber, &len ); /* Sequence */
1655 tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1656 if ( tag == 0xa0 ) /* Version is optional */
1657 tag = ber_get_int( ber, &i ); /* Int: Version */
1658 tag = ber_get_int( ber, &i ); /* Int: Serial */
1659 tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1660 ber_skip_data( ber, len );
1661 if ( !get_subject ) {
1662 tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1664 tag = ber_skip_tag( ber, &len );
1665 ber_skip_data( ber, len );
1666 tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1667 ber_skip_data( ber, len );
1668 tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1670 len = ber_ptrlen( ber );
1671 dn->bv_val = cert->bv_val + len;
1672 dn->bv_len = cert->bv_len - len;
1677 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1679 if ( !session->peer_der_dn.bv_val ) {
1680 const gnutls_datum_t *peer_cert_list;
1684 peer_cert_list = gnutls_certificate_get_peers( session->session,
1686 if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1688 bv.bv_len = peer_cert_list->size;
1689 bv.bv_val = peer_cert_list->data;
1691 x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1692 *dnbv = session->peer_der_dn;
1698 tls_get_cert( SSL *s )
1700 /* If peer cert was bad, treat as if no cert was given */
1701 if (SSL_get_verify_result(s)) {
1702 /* If we can send an alert, do so */
1703 if (SSL_version(s) != SSL2_VERSION) {
1704 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1708 return SSL_get_peer_certificate(s);
1712 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1715 X509 *x = tls_get_cert( session );
1719 return LDAP_INVALID_CREDENTIALS;
1721 xn = X509_get_subject_name(x);
1722 dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1723 dnbv->bv_val = xn->bytes->data;
1726 #endif /* HAVE_GNUTLS */
1729 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1730 LDAPDN_rewrite_dummy *func, unsigned flags )
1732 tls_session *session = s;
1736 rc = tls_get_cert_dn( session, &bvdn );
1737 if ( rc ) return rc;
1739 rc = ldap_X509dn2bv( &bvdn, dn,
1740 (LDAPDN_rewrite_func *)func, flags);
1744 /* what kind of hostname were we given? */
1752 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1754 tls_session *session = s;
1756 const gnutls_datum_t *peer_cert_list;
1759 char altname[NI_MAXHOST];
1762 gnutls_x509_crt_t cert;
1766 char *domain = NULL;
1767 #ifdef LDAP_PF_INET6
1768 struct in6_addr addr;
1770 struct in_addr addr;
1772 int n, len1 = 0, len2 = 0;
1774 time_t now = time(0);
1776 if( ldap_int_hostname &&
1777 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1779 name = ldap_int_hostname;
1784 peer_cert_list = gnutls_certificate_get_peers( session->session,
1786 if ( !peer_cert_list ) {
1787 Debug( LDAP_DEBUG_ANY,
1788 "TLS: unable to get peer certificate.\n",
1790 /* If this was a fatal condition, things would have
1791 * aborted long before now.
1793 return LDAP_SUCCESS;
1795 ret = gnutls_x509_crt_init( &cert );
1797 return LDAP_LOCAL_ERROR;
1798 ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1800 gnutls_x509_crt_deinit( cert );
1801 return LDAP_LOCAL_ERROR;
1804 #ifdef LDAP_PF_INET6
1805 if (name[0] == '[' && strchr(name, ']')) {
1806 char *n2 = ldap_strdup(name+1);
1807 *strchr(n2, ']') = 2;
1808 if (inet_pton(AF_INET6, n2, &addr))
1813 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1814 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1817 if (ntype == IS_DNS) {
1818 len1 = strlen(name);
1819 domain = strchr(name, '.');
1821 len2 = len1 - (domain-name);
1825 for ( i=0, ret=0; ret >= 0; i++ ) {
1826 altnamesize = sizeof(altname);
1827 ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1828 altname, &altnamesize, NULL );
1829 if ( ret < 0 ) break;
1832 if ( altnamesize == 0 ) continue;
1834 if ( ret == GNUTLS_SAN_DNSNAME ) {
1835 if (ntype != IS_DNS) continue;
1837 /* Is this an exact match? */
1838 if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1842 /* Is this a wildcard match? */
1843 if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1844 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1848 } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1849 if (ntype == IS_DNS) continue;
1851 #ifdef LDAP_PF_INET6
1852 if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1856 if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1859 if (!memcmp(altname, &addr, altnamesize)) {
1867 altnamesize = sizeof(altname);
1868 ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1869 0, 0, altname, &altnamesize );
1871 Debug( LDAP_DEBUG_ANY,
1872 "TLS: unable to get common name from peer certificate.\n",
1874 ret = LDAP_CONNECT_ERROR;
1875 if ( ld->ld_error ) {
1876 LDAP_FREE( ld->ld_error );
1878 ld->ld_error = LDAP_STRDUP(
1879 _("TLS: unable to get CN from peer certificate"));
1882 ret = LDAP_LOCAL_ERROR;
1883 if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1886 } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1887 /* Is this a wildcard match? */
1889 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1895 if( ret == LDAP_LOCAL_ERROR ) {
1896 altname[altnamesize] = '\0';
1897 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1898 "common name in certificate (%s).\n",
1900 ret = LDAP_CONNECT_ERROR;
1901 if ( ld->ld_error ) {
1902 LDAP_FREE( ld->ld_error );
1904 ld->ld_error = LDAP_STRDUP(
1905 _("TLS: hostname does not match CN in peer certificate"));
1908 gnutls_x509_crt_deinit( cert );
1912 #else /* !HAVE_GNUTLS */
1915 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1917 int i, ret = LDAP_LOCAL_ERROR;
1922 #ifdef LDAP_PF_INET6
1923 struct in6_addr addr;
1925 struct in_addr addr;
1928 if( ldap_int_hostname &&
1929 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1931 name = ldap_int_hostname;
1936 x = tls_get_cert((SSL *)s);
1938 Debug( LDAP_DEBUG_ANY,
1939 "TLS: unable to get peer certificate.\n",
1941 /* If this was a fatal condition, things would have
1942 * aborted long before now.
1944 return LDAP_SUCCESS;
1947 #ifdef LDAP_PF_INET6
1948 if (name[0] == '[' && strchr(name, ']')) {
1949 char *n2 = ldap_strdup(name+1);
1950 *strchr(n2, ']') = 2;
1951 if (inet_pton(AF_INET6, n2, &addr))
1956 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1957 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1960 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1963 STACK_OF(GENERAL_NAME) *alt;
1965 ex = X509_get_ext(x, i);
1966 alt = X509V3_EXT_d2i(ex);
1968 int n, len1 = 0, len2 = 0;
1969 char *domain = NULL;
1972 if (ntype == IS_DNS) {
1973 len1 = strlen(name);
1974 domain = strchr(name, '.');
1976 len2 = len1 - (domain-name);
1979 n = sk_GENERAL_NAME_num(alt);
1980 for (i=0; i<n; i++) {
1983 gn = sk_GENERAL_NAME_value(alt, i);
1984 if (gn->type == GEN_DNS) {
1985 if (ntype != IS_DNS) continue;
1987 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1988 sl = ASN1_STRING_length(gn->d.ia5);
1991 if (sl == 0) continue;
1993 /* Is this an exact match? */
1994 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1998 /* Is this a wildcard match? */
1999 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
2000 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2005 } else if (gn->type == GEN_IPADD) {
2006 if (ntype == IS_DNS) continue;
2008 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2009 sl = ASN1_STRING_length(gn->d.ia5);
2011 #ifdef LDAP_PF_INET6
2012 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2016 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2019 if (!memcmp(sn, &addr, sl)) {
2025 GENERAL_NAMES_free(alt);
2026 if (i < n) { /* Found a match */
2032 if (ret != LDAP_SUCCESS) {
2037 xn = X509_get_subject_name(x);
2038 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2039 buf, sizeof(buf)) == -1)
2041 Debug( LDAP_DEBUG_ANY,
2042 "TLS: unable to get common name from peer certificate.\n",
2044 ret = LDAP_CONNECT_ERROR;
2045 if ( ld->ld_error ) {
2046 LDAP_FREE( ld->ld_error );
2048 ld->ld_error = LDAP_STRDUP(
2049 _("TLS: unable to get CN from peer certificate"));
2051 } else if (strcasecmp(name, buf) == 0 ) {
2054 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2055 char *domain = strchr(name, '.');
2061 dlen = sl - (domain-name);
2064 /* Is this a wildcard match? */
2065 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2071 if( ret == LDAP_LOCAL_ERROR ) {
2072 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2073 "common name in certificate (%s).\n",
2075 ret = LDAP_CONNECT_ERROR;
2076 if ( ld->ld_error ) {
2077 LDAP_FREE( ld->ld_error );
2079 ld->ld_error = LDAP_STRDUP(
2080 _("TLS: hostname does not match CN in peer certificate"));
2089 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2094 case LDAP_OPT_X_TLS_CACERTFILE:
2095 case LDAP_OPT_X_TLS_CACERTDIR:
2096 case LDAP_OPT_X_TLS_CERTFILE:
2097 case LDAP_OPT_X_TLS_KEYFILE:
2098 case LDAP_OPT_X_TLS_RANDOM_FILE:
2099 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2100 case LDAP_OPT_X_TLS_DHFILE:
2102 case LDAP_OPT_X_TLS_CRLFILE:
2104 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2106 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2107 case LDAP_OPT_X_TLS:
2109 if ( strcasecmp( arg, "never" ) == 0 ) {
2110 i = LDAP_OPT_X_TLS_NEVER ;
2112 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
2113 i = LDAP_OPT_X_TLS_DEMAND ;
2115 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
2116 i = LDAP_OPT_X_TLS_ALLOW ;
2118 } else if ( strcasecmp( arg, "try" ) == 0 ) {
2119 i = LDAP_OPT_X_TLS_TRY ;
2121 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2122 ( strcasecmp( arg, "on" ) == 0 ) ||
2123 ( strcasecmp( arg, "yes" ) == 0) ||
2124 ( strcasecmp( arg, "true" ) == 0 ) )
2126 i = LDAP_OPT_X_TLS_HARD ;
2130 return ldap_pvt_tls_set_option( ld, option, &i );
2133 #ifdef HAVE_OPENSSL_CRL
2134 case LDAP_OPT_X_TLS_CRLCHECK:
2136 if ( strcasecmp( arg, "none" ) == 0 ) {
2137 i = LDAP_OPT_X_TLS_CRL_NONE ;
2138 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
2139 i = LDAP_OPT_X_TLS_CRL_PEER ;
2140 } else if ( strcasecmp( arg, "all" ) == 0 ) {
2141 i = LDAP_OPT_X_TLS_CRL_ALL ;
2144 return ldap_pvt_tls_set_option( ld, option, &i );
2153 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2155 struct ldapoptions *lo;
2158 assert( LDAP_VALID( ld ) );
2160 if( !LDAP_VALID( ld ) ) {
2161 return LDAP_OPT_ERROR;
2164 lo = &ld->ld_options;
2167 /* Get pointer to global option structure */
2168 lo = LDAP_INT_GLOBAL_OPT();
2170 return LDAP_NO_MEMORY;
2175 case LDAP_OPT_X_TLS:
2176 *(int *)arg = lo->ldo_tls_mode;
2178 case LDAP_OPT_X_TLS_CTX:
2179 *(void **)arg = lo->ldo_tls_ctx;
2180 if ( lo->ldo_tls_ctx ) {
2181 tls_ctx_ref( lo->ldo_tls_ctx );
2184 case LDAP_OPT_X_TLS_CACERTFILE:
2185 *(char **)arg = lo->ldo_tls_cacertfile ?
2186 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2188 case LDAP_OPT_X_TLS_CACERTDIR:
2189 *(char **)arg = lo->ldo_tls_cacertdir ?
2190 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2192 case LDAP_OPT_X_TLS_CERTFILE:
2193 *(char **)arg = lo->ldo_tls_certfile ?
2194 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2196 case LDAP_OPT_X_TLS_KEYFILE:
2197 *(char **)arg = lo->ldo_tls_keyfile ?
2198 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2200 case LDAP_OPT_X_TLS_DHFILE:
2201 *(char **)arg = lo->ldo_tls_dhfile ?
2202 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2205 case LDAP_OPT_X_TLS_CRLFILE:
2206 *(char **)arg = lo->ldo_tls_crlfile ?
2207 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2210 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2211 *(int *)arg = lo->ldo_tls_require_cert;
2213 #ifdef HAVE_OPENSSL_CRL
2214 case LDAP_OPT_X_TLS_CRLCHECK:
2215 *(int *)arg = lo->ldo_tls_crlcheck;
2218 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2219 *(char **)arg = lo->ldo_tls_ciphersuite ?
2220 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2222 case LDAP_OPT_X_TLS_RANDOM_FILE:
2224 *(char **)arg = tls_opt_randfile ?
2225 LDAP_STRDUP( tls_opt_randfile ) : NULL;
2227 *(char **)arg = NULL;
2230 case LDAP_OPT_X_TLS_SSL_CTX: {
2233 LDAPConn *conn = ld->ld_defconn;
2234 if ( conn != NULL ) {
2235 Sockbuf *sb = conn->lconn_sb;
2236 retval = ldap_pvt_tls_sb_ctx( sb );
2239 *(void **)arg = retval;
2242 case LDAP_OPT_X_TLS_CONNECT_CB:
2243 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2245 case LDAP_OPT_X_TLS_CONNECT_ARG:
2246 *(void **)arg = lo->ldo_tls_connect_arg;
2255 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2257 struct ldapoptions *lo;
2260 assert( LDAP_VALID( ld ) );
2262 if( !LDAP_VALID( ld ) ) {
2263 return LDAP_OPT_ERROR;
2266 lo = &ld->ld_options;
2269 /* Get pointer to global option structure */
2270 lo = LDAP_INT_GLOBAL_OPT();
2272 return LDAP_NO_MEMORY;
2277 case LDAP_OPT_X_TLS:
2278 if ( !arg ) return -1;
2280 switch( *(int *) arg ) {
2281 case LDAP_OPT_X_TLS_NEVER:
2282 case LDAP_OPT_X_TLS_DEMAND:
2283 case LDAP_OPT_X_TLS_ALLOW:
2284 case LDAP_OPT_X_TLS_TRY:
2285 case LDAP_OPT_X_TLS_HARD:
2287 lo->ldo_tls_mode = *(int *)arg;
2294 case LDAP_OPT_X_TLS_CTX:
2295 if ( lo->ldo_tls_ctx )
2296 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2297 lo->ldo_tls_ctx = arg;
2298 tls_ctx_ref( lo->ldo_tls_ctx );
2300 case LDAP_OPT_X_TLS_CONNECT_CB:
2301 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2303 case LDAP_OPT_X_TLS_CONNECT_ARG:
2304 lo->ldo_tls_connect_arg = arg;
2306 case LDAP_OPT_X_TLS_CACERTFILE:
2307 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2308 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2310 case LDAP_OPT_X_TLS_CACERTDIR:
2311 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2312 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2314 case LDAP_OPT_X_TLS_CERTFILE:
2315 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2316 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2318 case LDAP_OPT_X_TLS_KEYFILE:
2319 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2320 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2322 case LDAP_OPT_X_TLS_DHFILE:
2323 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2324 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2327 case LDAP_OPT_X_TLS_CRLFILE:
2328 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2329 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2332 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2333 if ( !arg ) return -1;
2334 switch( *(int *) arg ) {
2335 case LDAP_OPT_X_TLS_NEVER:
2336 case LDAP_OPT_X_TLS_DEMAND:
2337 case LDAP_OPT_X_TLS_ALLOW:
2338 case LDAP_OPT_X_TLS_TRY:
2339 case LDAP_OPT_X_TLS_HARD:
2340 lo->ldo_tls_require_cert = * (int *) arg;
2344 #ifdef HAVE_OPENSSL_CRL
2345 case LDAP_OPT_X_TLS_CRLCHECK:
2346 if ( !arg ) return -1;
2347 switch( *(int *) arg ) {
2348 case LDAP_OPT_X_TLS_CRL_NONE:
2349 case LDAP_OPT_X_TLS_CRL_PEER:
2350 case LDAP_OPT_X_TLS_CRL_ALL:
2351 lo->ldo_tls_crlcheck = * (int *) arg;
2356 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2357 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2358 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2361 case LDAP_OPT_X_TLS_RANDOM_FILE:
2365 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2366 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2370 case LDAP_OPT_X_TLS_NEWCTX:
2371 if ( !arg ) return -1;
2372 if ( lo->ldo_tls_ctx )
2373 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2374 lo->ldo_tls_ctx = NULL;
2375 return ldap_int_tls_init_ctx( lo, *(int *)arg );
2383 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2385 Sockbuf *sb = conn->lconn_sb;
2390 host = srv->lud_host;
2392 host = conn->lconn_server->lud_host;
2395 /* avoid NULL host */
2396 if( host == NULL ) {
2400 (void) ldap_pvt_tls_init();
2403 * Fortunately, the lib uses blocking io...
2405 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2406 ld->ld_errno = LDAP_CONNECT_ERROR;
2407 return (ld->ld_errno);
2410 ssl = ldap_pvt_tls_sb_ctx( sb );
2411 assert( ssl != NULL );
2414 * compare host with name(s) in certificate
2416 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2417 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2418 if (ld->ld_errno != LDAP_SUCCESS) {
2419 return ld->ld_errno;
2423 return LDAP_SUCCESS;
2427 /* Derived from openssl/apps/s_cb.c */
2429 tls_info_cb( const SSL *ssl, int where, int ret )
2433 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2435 w = where & ~SSL_ST_MASK;
2436 if ( w & SSL_ST_CONNECT ) {
2438 } else if ( w & SSL_ST_ACCEPT ) {
2446 state = LDAP_STRDUP( state );
2450 if ( where & SSL_CB_LOOP ) {
2451 Debug( LDAP_DEBUG_TRACE,
2452 "TLS trace: %s:%s\n",
2455 } else if ( where & SSL_CB_ALERT ) {
2456 char *atype = (char *) SSL_alert_type_string_long( ret );
2457 char *adesc = (char *) SSL_alert_desc_string_long( ret );
2458 op = ( where & SSL_CB_READ ) ? "read" : "write";
2461 atype = LDAP_STRDUP( atype );
2465 adesc = LDAP_STRDUP( adesc );
2469 Debug( LDAP_DEBUG_TRACE,
2470 "TLS trace: SSL3 alert %s:%s:%s\n",
2473 if ( atype ) LDAP_FREE( atype );
2474 if ( adesc ) LDAP_FREE( adesc );
2476 } else if ( where & SSL_CB_EXIT ) {
2478 Debug( LDAP_DEBUG_TRACE,
2479 "TLS trace: %s:failed in %s\n",
2481 } else if ( ret < 0 ) {
2482 Debug( LDAP_DEBUG_TRACE,
2483 "TLS trace: %s:error in %s\n",
2488 if ( state ) LDAP_FREE( state );
2493 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2502 char *certerr = NULL;
2504 cert = X509_STORE_CTX_get_current_cert( ctx );
2505 errnum = X509_STORE_CTX_get_error( ctx );
2506 errdepth = X509_STORE_CTX_get_error_depth( ctx );
2509 * X509_get_*_name return pointers to the internal copies of
2510 * those things requested. So do not free them.
2512 subject = X509_get_subject_name( cert );
2513 issuer = X509_get_issuer_name( cert );
2514 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2515 sname = X509_NAME_oneline( subject, NULL, 0 );
2516 iname = X509_NAME_oneline( issuer, NULL, 0 );
2517 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2519 if ( sname ) __etoa( sname );
2520 if ( iname ) __etoa( iname );
2522 certerr = LDAP_STRDUP( certerr );
2526 Debug( LDAP_DEBUG_TRACE,
2527 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
2529 sname ? sname : "-unknown-" );
2530 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2532 Debug( LDAP_DEBUG_ANY,
2533 "TLS certificate verification: Error, %s\n",
2537 CRYPTO_free ( sname );
2539 CRYPTO_free ( iname );
2541 if ( certerr ) LDAP_FREE( certerr );
2547 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2549 (void) tls_verify_cb( ok, ctx );
2553 /* Inspired by ERR_print_errors in OpenSSL */
2555 tls_report_error( void )
2562 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2563 ERR_error_string_n( l, buf, sizeof( buf ) );
2566 file = LDAP_STRDUP( file );
2567 __etoa( (char *)file );
2571 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2574 if ( file ) LDAP_FREE( (void *)file );
2580 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2584 /* FIXME: Pregenerate the key on startup */
2585 /* FIXME: Who frees the key? */
2586 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2589 Debug( LDAP_DEBUG_ANY,
2590 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
2591 key_length, is_export ? "export" : "domestic", 0 );
2598 tls_seed_PRNG( const char *randfile )
2600 #ifndef URANDOM_DEVICE
2601 /* no /dev/urandom (or equiv) */
2603 char buffer[MAXPATHLEN];
2605 if (randfile == NULL) {
2606 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2607 * If $HOME is not set or buffer too small to hold the pathname,
2608 * an error occurs. - From RAND_file_name() man page.
2609 * The fact is that when $HOME is NULL, .rnd is used.
2611 randfile = RAND_file_name( buffer, sizeof( buffer ) );
2613 } else if (RAND_egd(randfile) > 0) {
2618 if (randfile == NULL) {
2619 Debug( LDAP_DEBUG_ANY,
2620 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2625 total = RAND_load_file(randfile, -1);
2627 if (RAND_status() == 0) {
2628 Debug( LDAP_DEBUG_ANY,
2629 "TLS: PRNG not been seeded with enough data\n",
2634 /* assume if there was enough bits to seed that it's okay
2635 * to write derived bits to the file
2637 RAND_write_file(randfile);
2651 /* From the OpenSSL 0.9.7 distro */
2652 static const char dhpem512[] =
2653 "-----BEGIN DH PARAMETERS-----\n\
2654 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2655 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2656 -----END DH PARAMETERS-----\n";
2658 static const char dhpem1024[] =
2659 "-----BEGIN DH PARAMETERS-----\n\
2660 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2661 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2662 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2663 -----END DH PARAMETERS-----\n";
2665 static const char dhpem2048[] =
2666 "-----BEGIN DH PARAMETERS-----\n\
2667 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2668 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2669 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2670 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2671 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2672 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2673 -----END DH PARAMETERS-----\n";
2675 static const char dhpem4096[] =
2676 "-----BEGIN DH PARAMETERS-----\n\
2677 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2678 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2679 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2680 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2681 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2682 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2683 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2684 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2685 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2686 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2687 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2688 -----END DH PARAMETERS-----\n";
2690 static const struct dhinfo dhpem[] = {
2691 { 512, dhpem512, sizeof(dhpem512) },
2692 { 1024, dhpem1024, sizeof(dhpem1024) },
2693 { 2048, dhpem2048, sizeof(dhpem2048) },
2694 { 4096, dhpem4096, sizeof(dhpem4096) },
2699 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2701 struct dhplist *p = NULL;
2706 /* Do we have params of this length already? */
2707 #ifdef LDAP_R_COMPILE
2708 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2710 for ( p = dhparams; p; p=p->next ) {
2711 if ( p->keylength == key_length ) {
2712 #ifdef LDAP_R_COMPILE
2713 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2719 /* No - check for hardcoded params */
2721 for (i=0; dhpem[i].keylength; i++) {
2722 if ( dhpem[i].keylength == key_length ) {
2723 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2729 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2733 /* Generating on the fly is expensive/slow... */
2735 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2738 p = LDAP_MALLOC( sizeof(struct dhplist) );
2740 p->keylength = key_length;
2747 #ifdef LDAP_R_COMPILE
2748 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2754 #endif /* HAVE_OPENSSL */
2757 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2762 if (HAS_TLS( sb )) {
2763 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2772 ldap_pvt_tls_get_strength( void *s )
2777 c = SSL_get_current_cipher((SSL *)s);
2778 return SSL_CIPHER_get_bits(c, NULL);
2779 #elif defined(HAVE_GNUTLS)
2780 tls_session *session = s;
2781 gnutls_cipher_algorithm_t c;
2783 c = gnutls_cipher_get( session->session );
2784 return gnutls_cipher_get_key_size( c );
2792 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2795 struct berval der_dn;
2801 x = SSL_get_certificate((SSL *)s);
2803 if (!x) return LDAP_INVALID_CREDENTIALS;
2805 xn = X509_get_subject_name(x);
2806 der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2807 der_dn.bv_val = xn->bytes->data;
2808 #elif defined(HAVE_GNUTLS)
2809 tls_session *session = s;
2810 const gnutls_datum_t *x;
2813 x = gnutls_certificate_get_ours( session->session );
2815 if (!x) return LDAP_INVALID_CREDENTIALS;
2817 bv.bv_val = x->data;
2818 bv.bv_len = x->size;
2820 x509_cert_get_dn( &bv, &der_dn, 1 );
2822 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2824 #else /* !HAVE_TLS */
2825 return LDAP_NOT_SUPPORTED;
2830 ldap_start_tls( LDAP *ld,
2831 LDAPControl **serverctrls,
2832 LDAPControl **clientctrls,
2835 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2836 NULL, serverctrls, clientctrls, msgidp );
2840 ldap_install_tls( LDAP *ld )
2843 return LDAP_NOT_SUPPORTED;
2845 if ( ldap_tls_inplace( ld ) ) {
2846 return LDAP_LOCAL_ERROR;
2849 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2854 ldap_start_tls_s ( LDAP *ld,
2855 LDAPControl **serverctrls,
2856 LDAPControl **clientctrls )
2859 return LDAP_NOT_SUPPORTED;
2862 char *rspoid = NULL;
2863 struct berval *rspdata = NULL;
2865 /* XXYYZ: this initiates operation only on default connection! */
2867 if ( ldap_tls_inplace( ld ) ) {
2868 return LDAP_LOCAL_ERROR;
2871 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2872 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2874 if ( rspoid != NULL ) {
2878 if ( rspdata != NULL ) {
2879 ber_bvfree( rspdata );
2882 if ( rc == LDAP_SUCCESS ) {
2883 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2890 /* These tags probably all belong in lber.h, but they're
2891 * not normally encountered when processing LDAP, so maybe
2892 * they belong somewhere else instead.
2895 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2897 /* Tags for string types used in a DirectoryString.
2899 * Note that IA5string is not one of the defined choices for
2900 * DirectoryString in X.520, but it gets used for email AVAs.
2902 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2903 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2904 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2905 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2906 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2907 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2910 find_oid( struct berval *oid )
2914 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2915 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2916 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2922 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2923 * x509_name must be raw DER. If func is non-NULL, the
2924 * constructed DN will use numeric OIDs to identify attributeTypes,
2925 * and the func() will be invoked to rewrite the DN with the given
2928 * Otherwise the DN will use shortNames from a hardcoded table.
2931 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2936 LDAPAVA *newAVA, *baseAVA;
2937 BerElementBuffer berbuf;
2938 BerElement *ber = (BerElement *)&berbuf;
2939 char oids[8192], *oidptr = oids, *oidbuf = NULL;
2941 char *dn_end, *rdn_end;
2942 int i, navas, nrdns, rc = LDAP_SUCCESS;
2943 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2949 struct berval Oid, Val, oid2, *in = x509_name;
2951 assert( bv != NULL );
2959 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2960 * An AVA is a SEQUENCE of attr and value.
2961 * Count the number of AVAs and RDNs
2963 ber_init2( ber, in, LBER_USE_DER );
2964 tag = ber_peek_tag( ber, &len );
2965 if ( tag != LBER_SEQUENCE )
2966 return LDAP_DECODING_ERROR;
2968 for ( tag = ber_first_element( ber, &len, &dn_end );
2970 tag = ber_next_element( ber, &len, dn_end )) {
2972 for ( tag = ber_first_element( ber, &len, &rdn_end );
2973 tag == LBER_SEQUENCE;
2974 tag = ber_next_element( ber, &len, rdn_end )) {
2975 tag = ber_skip_tag( ber, &len );
2976 ber_skip_data( ber, len );
2981 /* Allocate the DN/RDN/AVA stuff as a single block */
2982 dnsize = sizeof(LDAPRDN) * (nrdns+1);
2983 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
2984 dnsize += sizeof(LDAPAVA) * navas;
2985 if (dnsize > sizeof(ptrs)) {
2986 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
2987 if ( newDN == NULL )
2988 return LDAP_NO_MEMORY;
2990 newDN = (LDAPDN)(char *)ptrs;
2993 newDN[nrdns] = NULL;
2994 newRDN = (LDAPRDN)(newDN + nrdns+1);
2995 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
2998 /* Rewind and start extracting */
3001 tag = ber_first_element( ber, &len, &dn_end );
3002 for ( i = nrdns - 1; i >= 0; i-- ) {
3005 for ( tag = ber_first_element( ber, &len, &rdn_end );
3006 tag == LBER_SEQUENCE;
3007 tag = ber_next_element( ber, &len, rdn_end )) {
3010 tag = ber_skip_tag( ber, &len );
3011 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
3012 if ( tag != LBER_TAG_OID ) {
3013 rc = LDAP_DECODING_ERROR;
3017 oid2.bv_val = oidptr;
3018 oid2.bv_len = oidrem;
3019 ber_decode_oid( &Oid, &oid2 );
3020 oidname = find_oid( &oid2 );
3022 newAVA->la_attr = oid2;
3023 oidptr += oid2.bv_len + 1;
3024 oidrem -= oid2.bv_len + 1;
3026 /* Running out of OID buffer space? */
3028 if ( oidsize == 0 ) {
3029 oidsize = sizeof(oids) * 2;
3031 oidbuf = LDAP_MALLOC( oidsize );
3032 if ( oidbuf == NULL ) goto nomem;
3036 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3037 if ( oidbuf == NULL ) goto nomem;
3038 /* Buffer moved! Fix AVA pointers */
3039 if ( old != oidbuf ) {
3041 long dif = oidbuf - old;
3043 for (a=baseAVA; a<=newAVA; a++){
3044 if (a->la_attr.bv_val >= old &&
3045 a->la_attr.bv_val <= (old + oidsize))
3046 a->la_attr.bv_val += dif;
3049 oidptr = oidbuf + oidsize - oidrem;
3056 newAVA->la_attr = oidname->oid;
3058 newAVA->la_attr = oidname->name;
3061 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
3063 case LBER_TAG_UNIVERSAL:
3064 /* This uses 32-bit ISO 10646-1 */
3065 csize = 4; goto to_utf8;
3067 /* This uses 16-bit ISO 10646-1 */
3068 csize = 2; goto to_utf8;
3069 case LBER_TAG_TELETEX:
3070 /* This uses 8-bit, assume ISO 8859-1 */
3072 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3073 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3074 if (rc != LDAP_SUCCESS) goto nomem;
3075 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3078 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3079 /* This is already in UTF-8 encoding */
3081 case LBER_TAG_PRINTABLE:
3082 /* These are always 7-bit strings */
3083 newAVA->la_value = Val;
3087 newAVA->la_private = NULL;
3088 newAVA->la_flags = LDAP_AVA_STRING;
3092 tag = ber_next_element( ber, &len, dn_end );
3096 rc = func( newDN, flags, NULL );
3097 if ( rc != LDAP_SUCCESS )
3101 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3104 for (;baseAVA < newAVA; baseAVA++) {
3105 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3106 LDAP_FREE( baseAVA->la_attr.bv_val );
3107 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3108 LDAP_FREE( baseAVA->la_value.bv_val );
3112 LDAP_FREE( oidbuf );
3113 if ( newDN != (LDAPDN)(char *) ptrs )