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>
39 #include <ldap_pvt_thread.h>
43 #include <gnutls/gnutls.h>
44 #include <gnutls/x509.h>
47 #define DH_BITS (1024)
50 #ifdef HAVE_OPENSSL_SSL_H
51 #include <openssl/ssl.h>
52 #include <openssl/x509v3.h>
53 #include <openssl/err.h>
54 #include <openssl/rand.h>
55 #include <openssl/safestack.h>
56 #elif defined( HAVE_SSL_H )
61 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
62 (void *)&sb_tls_sbio )
64 /* RFC2459 minimum required set of supported attribute types
67 typedef struct oid_name {
72 #define CN_OID oids[0].oid.bv_val
74 static oid_name oids[] = {
75 { BER_BVC("2.5.4.3"), BER_BVC("cn") },
76 { BER_BVC("2.5.4.4"), BER_BVC("sn") },
77 { BER_BVC("2.5.4.6"), BER_BVC("c") },
78 { BER_BVC("2.5.4.7"), BER_BVC("l") },
79 { BER_BVC("2.5.4.8"), BER_BVC("st") },
80 { BER_BVC("2.5.4.10"), BER_BVC("o") },
81 { BER_BVC("2.5.4.11"), BER_BVC("ou") },
82 { BER_BVC("2.5.4.12"), BER_BVC("title") },
83 { BER_BVC("2.5.4.41"), BER_BVC("name") },
84 { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
85 { BER_BVC("2.5.4.43"), BER_BVC("initials") },
86 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
87 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
88 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
89 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
90 { BER_BVNULL, BER_BVNULL }
95 typedef struct tls_cipher_suite {
97 gnutls_kx_algorithm_t kx;
98 gnutls_cipher_algorithm_t cipher;
99 gnutls_mac_algorithm_t mac;
100 gnutls_protocol_t version;
103 static tls_cipher_suite *ciphers;
104 static int n_ciphers;
106 /* sorta replacing SSL_CTX */
107 typedef struct tls_ctx {
108 struct ldapoptions *lo;
109 gnutls_certificate_credentials_t cred;
110 gnutls_dh_params_t dh_params;
111 unsigned long verify_depth;
116 #ifdef LDAP_R_COMPILE
117 ldap_pvt_thread_mutex_t ref_mutex;
121 /* sorta replacing SSL */
122 typedef struct tls_session {
124 gnutls_session_t session;
125 struct berval peer_der_dn;
128 #ifdef LDAP_R_COMPILE
131 ldap_pvt_gcry_mutex_init( void **priv )
134 ldap_pvt_thread_mutex_t *lock = LDAP_MALLOC( sizeof( ldap_pvt_thread_mutex_t ));
139 err = ldap_pvt_thread_mutex_init( lock );
148 ldap_pvt_gcry_mutex_destroy( void **lock )
150 int err = ldap_pvt_thread_mutex_destroy( *lock );
155 ldap_pvt_gcry_mutex_lock( void **lock )
157 return ldap_pvt_thread_mutex_lock( *lock );
160 ldap_pvt_gcry_mutex_unlock( void **lock )
162 return ldap_pvt_thread_mutex_unlock( *lock );
165 static struct gcry_thread_cbs ldap_generic_thread_cbs = {
166 GCRY_THREAD_OPTION_USER,
168 ldap_pvt_gcry_mutex_init,
169 ldap_pvt_gcry_mutex_destroy,
170 ldap_pvt_gcry_mutex_lock,
171 ldap_pvt_gcry_mutex_unlock,
172 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
176 tls_init_threads( void )
178 gcry_control (GCRYCTL_SET_THREAD_CBS, &ldap_generic_thread_cbs);
180 #endif /* LDAP_R_COMPILE */
183 ldap_pvt_tls_ctx_free ( void *c )
190 #ifdef LDAP_R_COMPILE
191 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
193 refcount = --ctx->refcount;
194 #ifdef LDAP_R_COMPILE
195 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
199 LDAP_FREE( ctx->kx_list );
200 gnutls_certificate_free_credentials( ctx->cred );
205 tls_ctx_new ( struct ldapoptions *lo )
209 ctx = ber_memcalloc ( 1, sizeof (*ctx) );
212 if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
217 #ifdef LDAP_R_COMPILE
218 ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
225 tls_ctx_ref( tls_ctx *ctx )
227 #ifdef LDAP_R_COMPILE
228 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
231 #ifdef LDAP_R_COMPILE
232 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
237 tls_session_new ( tls_ctx * ctx, int is_server )
239 tls_session *session;
241 session = ber_memcalloc ( 1, sizeof (*session) );
246 gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
247 gnutls_set_default_priority( session->session );
248 if ( ctx->kx_list ) {
249 gnutls_kx_set_priority( session->session, ctx->kx_list );
250 gnutls_cipher_set_priority( session->session, ctx->cipher_list );
251 gnutls_mac_set_priority( session->session, ctx->mac_list );
254 gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, ctx->cred );
258 if ( ctx->lo->ldo_tls_require_cert ) {
259 flag = GNUTLS_CERT_REQUEST;
260 if ( ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
261 ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
262 flag = GNUTLS_CERT_REQUIRE;
263 gnutls_certificate_server_set_request( session->session, flag );
270 tls_session_free ( tls_session * session )
272 ber_memfree ( session );
275 #define tls_session_connect( ssl ) gnutls_handshake( ssl->session )
276 #define tls_session_accept( ssl ) gnutls_handshake( ssl->session )
278 /* suites is a string of colon-separated cipher suite names. */
280 tls_parse_ciphers( tls_ctx *ctx, char *suites )
284 int *list, nkx = 0, ncipher = 0, nmac = 0;
285 int *kx, *cipher, *mac;
290 end = strchr(ptr, ':');
295 for (i=0; i<n_ciphers; i++) {
296 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
301 if ( i == n_ciphers ) {
302 /* unrecognized cipher suite */
307 /* Space for all 3 lists */
308 list = LDAP_MALLOC( (num+1) * sizeof(int) * 3 );
317 end = strchr(ptr, ':');
322 for (i=0; i<n_ciphers; i++) {
323 /* For each cipher suite, insert its algorithms into
324 * their respective priority lists. Make sure they
325 * only appear once in each list.
327 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
328 for (j=0; j<nkx; j++)
329 if ( kx[j] == ciphers[i].kx )
332 kx[nkx++] = ciphers[i].kx;
333 for (j=0; j<ncipher; j++)
334 if ( cipher[j] == ciphers[i].cipher )
337 cipher[ncipher++] = ciphers[i].cipher;
338 for (j=0; j<nmac; j++)
339 if ( mac[j] == ciphers[i].mac )
342 mac[nmac++] = ciphers[i].mac;
351 ctx->cipher_list = cipher;
358 typedef SSL_CTX tls_ctx;
359 typedef SSL tls_session;
361 static int tls_opt_trace = 1;
362 static char *tls_opt_randfile = NULL;
364 static void tls_report_error( void );
366 static void tls_info_cb( const SSL *ssl, int where, int ret );
367 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
368 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
369 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
371 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
373 typedef struct dhplist {
374 struct dhplist *next;
379 static dhplist *dhparams;
381 static int tls_seed_PRNG( const char *randfile );
383 #ifdef LDAP_R_COMPILE
385 * provide mutexes for the SSLeay library.
387 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
389 static void tls_locking_cb( int mode, int type, const char *file, int line )
391 if ( mode & CRYPTO_LOCK ) {
392 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
394 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
398 static void tls_init_threads( void )
402 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
403 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
405 CRYPTO_set_locking_callback( tls_locking_cb );
406 CRYPTO_set_id_callback( ldap_pvt_thread_self );
407 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
408 * is an integral type that fits in an unsigned long
411 #endif /* LDAP_R_COMPILE */
414 ldap_pvt_tls_ctx_free ( void *c )
421 tls_ctx_new( struct ldapoptions *lo )
423 return SSL_CTX_new( SSLv23_method() );
427 tls_ctx_ref( void *c )
430 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
434 tls_session_new( tls_ctx *ctx, int is_server )
436 return SSL_new( ctx );
439 #define tls_session_connect( ssl ) SSL_connect( ssl )
440 #define tls_session_accept( ssl ) SSL_accept( ssl )
442 static STACK_OF(X509_NAME) *
443 get_ca_list( char * bundle, char * dir )
445 STACK_OF(X509_NAME) *ca_list = NULL;
448 ca_list = SSL_load_client_CA_file( bundle );
450 #if defined(HAVE_DIRENT_H) || defined(dirent)
455 ca_list = sk_X509_NAME_new_null();
458 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
460 sk_X509_NAME_free( ca_list );
468 #endif /* HAVE_GNUTLS */
470 #ifdef LDAP_R_COMPILE
472 * an extra mutex for the default ctx.
474 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
478 ldap_int_tls_destroy( struct ldapoptions *lo )
480 if ( lo->ldo_tls_ctx ) {
481 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
482 lo->ldo_tls_ctx = NULL;
485 if ( lo->ldo_tls_certfile ) {
486 LDAP_FREE( lo->ldo_tls_certfile );
487 lo->ldo_tls_certfile = NULL;
489 if ( lo->ldo_tls_keyfile ) {
490 LDAP_FREE( lo->ldo_tls_keyfile );
491 lo->ldo_tls_keyfile = NULL;
493 if ( lo->ldo_tls_dhfile ) {
494 LDAP_FREE( lo->ldo_tls_dhfile );
495 lo->ldo_tls_dhfile = NULL;
497 if ( lo->ldo_tls_cacertfile ) {
498 LDAP_FREE( lo->ldo_tls_cacertfile );
499 lo->ldo_tls_cacertfile = NULL;
501 if ( lo->ldo_tls_cacertdir ) {
502 LDAP_FREE( lo->ldo_tls_cacertdir );
503 lo->ldo_tls_cacertdir = NULL;
505 if ( lo->ldo_tls_ciphersuite ) {
506 LDAP_FREE( lo->ldo_tls_ciphersuite );
507 lo->ldo_tls_ciphersuite = NULL;
510 if ( lo->ldo_tls_crlfile ) {
511 LDAP_FREE( lo->ldo_tls_crlfile );
512 lo->ldo_tls_crlfile = NULL;
518 * Tear down the TLS subsystem. Should only be called once.
521 ldap_pvt_tls_destroy( void )
523 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
525 ldap_int_tls_destroy( lo );
528 LDAP_FREE( ciphers );
531 gnutls_global_deinit();
537 if ( tls_opt_randfile ) {
538 LDAP_FREE( tls_opt_randfile );
539 tls_opt_randfile = NULL;
545 * Initialize TLS subsystem. Should be called only once.
548 ldap_pvt_tls_init( void )
550 static int tls_initialized = 0;
552 if ( tls_initialized++ ) return 0;
554 #ifdef LDAP_R_COMPILE
556 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
560 gnutls_global_init ();
562 /* GNUtls cipher suite handling: The library ought to parse suite
563 * names for us, but it doesn't. It will return a list of suite names
564 * that it supports, so we can do parsing ourselves. It ought to tell
565 * us how long the list is, but it doesn't do that either, so we just
566 * have to count it manually...
570 tls_cipher_suite *ptr, tmp;
573 while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
574 &tmp.mac, &tmp.version ))
579 ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
582 for ( i=0; i<n_ciphers; i++ ) {
583 ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
584 &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
585 &ciphers[i].version );
589 #else /* !HAVE_GNUTLS */
593 char *file = LDAP_STRDUP( tls_opt_randfile );
594 if ( file ) __atoe( file );
595 (void) tls_seed_PRNG( file );
599 (void) tls_seed_PRNG( tls_opt_randfile );
602 SSL_load_error_strings();
603 SSLeay_add_ssl_algorithms();
605 /* FIXME: mod_ssl does this */
606 X509V3_add_standard_extensions();
608 #endif /* HAVE_GNUTLS */
613 * initialize a new TLS context
616 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
619 char *ciphersuite = lo->ldo_tls_ciphersuite;
620 char *cacertfile = lo->ldo_tls_cacertfile;
621 char *cacertdir = lo->ldo_tls_cacertdir;
622 char *certfile = lo->ldo_tls_certfile;
623 char *keyfile = lo->ldo_tls_keyfile;
625 char *crlfile = lo->ldo_tls_crlfile;
627 char *dhfile = lo->ldo_tls_dhfile;
630 if ( lo->ldo_tls_ctx )
635 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
636 /* minimum configuration not provided */
637 return LDAP_NOT_SUPPORTED;
641 /* This ASCII/EBCDIC handling is a real pain! */
643 ciphersuite = LDAP_STRDUP( ciphersuite );
644 __atoe( ciphersuite );
647 cacertfile = LDAP_STRDUP( cacertfile );
648 __atoe( cacertfile );
651 certfile = LDAP_STRDUP( certfile );
655 keyfile = LDAP_STRDUP( keyfile );
660 crlfile = LDAP_STRDUP( crlfile );
665 cacertdir = LDAP_STRDUP( cacertdir );
669 dhfile = LDAP_STRDUP( dhfile );
674 lo->ldo_tls_ctx = tls_ctx_new( lo );
675 if ( lo->ldo_tls_ctx == NULL ) {
677 Debug( LDAP_DEBUG_ANY,
678 "TLS: could not allocate default ctx.\n",
681 Debug( LDAP_DEBUG_ANY,
682 "TLS: could not allocate default ctx (%lu).\n",
683 ERR_peek_error(),0,0);
690 if ( lo->ldo_tls_ciphersuite &&
691 tls_parse_ciphers( lo->ldo_tls_ctx,
693 Debug( LDAP_DEBUG_ANY,
694 "TLS: could not set cipher list %s.\n",
695 lo->ldo_tls_ciphersuite, 0, 0 );
700 if (lo->ldo_tls_cacertdir != NULL) {
701 Debug( LDAP_DEBUG_ANY,
702 "TLS: warning: cacertdir not implemented for gnutls\n",
706 if (lo->ldo_tls_cacertfile != NULL) {
707 rc = gnutls_certificate_set_x509_trust_file(
708 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
710 GNUTLS_X509_FMT_PEM );
711 if ( rc < 0 ) goto error_exit;
714 if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
715 rc = gnutls_certificate_set_x509_key_file(
716 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
719 GNUTLS_X509_FMT_PEM );
720 if ( rc ) goto error_exit;
721 } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
722 Debug( LDAP_DEBUG_ANY,
723 "TLS: only one of certfile and keyfile specified\n",
729 if ( lo->ldo_tls_dhfile ) {
730 Debug( LDAP_DEBUG_ANY,
731 "TLS: warning: ignoring dhfile\n",
735 if ( lo->ldo_tls_crlfile ) {
736 rc = gnutls_certificate_set_x509_crl_file(
737 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
739 GNUTLS_X509_FMT_PEM );
740 if ( rc < 0 ) goto error_exit;
743 gnutls_dh_params_init (&((tls_ctx*)
744 lo->ldo_tls_ctx)->dh_params);
745 gnutls_dh_params_generate2 (((tls_ctx*)
746 lo->ldo_tls_ctx)->dh_params,
750 #else /* !HAVE_GNUTLS */
753 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
754 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
757 if ( lo->ldo_tls_ciphersuite &&
758 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
760 Debug( LDAP_DEBUG_ANY,
761 "TLS: could not set cipher list %s.\n",
762 lo->ldo_tls_ciphersuite, 0, 0 );
768 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
769 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
770 cacertfile, cacertdir ) ||
771 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
773 Debug( LDAP_DEBUG_ANY, "TLS: "
774 "could not load verify locations (file:`%s',dir:`%s').\n",
775 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
776 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
784 STACK_OF(X509_NAME) *calist;
785 /* List of CA names to send to a client */
786 calist = get_ca_list( cacertfile, cacertdir );
788 Debug( LDAP_DEBUG_ANY, "TLS: "
789 "could not load client CA list (file:`%s',dir:`%s').\n",
790 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
791 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
798 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
802 if ( lo->ldo_tls_certfile &&
803 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
804 certfile, SSL_FILETYPE_PEM ) )
806 Debug( LDAP_DEBUG_ANY,
807 "TLS: could not use certificate `%s'.\n",
808 lo->ldo_tls_certfile,0,0);
814 /* Key validity is checked automatically if cert has already been set */
815 if ( lo->ldo_tls_keyfile &&
816 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
817 keyfile, SSL_FILETYPE_PEM ) )
819 Debug( LDAP_DEBUG_ANY,
820 "TLS: could not use key file `%s'.\n",
821 lo->ldo_tls_keyfile,0,0);
827 if ( lo->ldo_tls_dhfile ) {
832 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
833 Debug( LDAP_DEBUG_ANY,
834 "TLS: could not use DH parameters file `%s'.\n",
835 lo->ldo_tls_dhfile,0,0);
840 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
841 p = LDAP_MALLOC( sizeof(dhplist) );
843 p->keylength = DH_size( dh ) * 8;
852 if ( tls_opt_trace ) {
853 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
857 if ( lo->ldo_tls_require_cert ) {
859 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
860 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
861 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
865 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
866 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
867 tls_verify_ok : tls_verify_cb );
868 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
869 if ( lo->ldo_tls_dhfile ) {
870 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
872 #ifdef HAVE_OPENSSL_CRL
873 if ( lo->ldo_tls_crlcheck ) {
874 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
875 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
876 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
877 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
878 X509_STORE_set_flags( x509_s,
879 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
884 #endif /* HAVE_GNUTLS */
887 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
888 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
889 lo->ldo_tls_ctx = NULL;
892 LDAP_FREE( ciphersuite );
893 LDAP_FREE( cacertfile );
894 LDAP_FREE( certfile );
895 LDAP_FREE( keyfile );
897 LDAP_FREE( crlfile );
899 LDAP_FREE( cacertdir );
907 * initialize the default context
910 ldap_pvt_tls_init_def_ctx( int is_server )
912 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
914 #ifdef LDAP_R_COMPILE
915 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
917 rc = ldap_int_tls_init_ctx( lo, is_server );
918 #ifdef LDAP_R_COMPILE
919 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
925 alloc_handle( void *ctx_arg, int is_server )
933 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
934 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
935 ctx = lo->ldo_tls_ctx;
938 ssl = tls_session_new( ctx, is_server );
940 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
947 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
949 sb->sb_trans_needs_read = 0;
950 sb->sb_trans_needs_write = 0;
953 if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
956 switch (gnutls_record_get_direction (ssl->session)) {
958 sb->sb_trans_needs_read = 1;
961 sb->sb_trans_needs_write = 1;
964 #else /* !HAVE_GNUTLS */
965 rc = SSL_get_error(ssl, rc);
966 if (rc == SSL_ERROR_WANT_READ) {
967 sb->sb_trans_needs_read = 1;
970 } else if (rc == SSL_ERROR_WANT_WRITE) {
971 sb->sb_trans_needs_write = 1;
974 } else if (rc == SSL_ERROR_WANT_CONNECT) {
977 #endif /* HAVE_GNUTLS */
982 * TLS support for LBER Sockbufs
987 Sockbuf_IO_Desc *sbiod;
993 sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
997 if ( buf == NULL || len <= 0 ) return 0;
999 p = (struct tls_data *)ptr;
1001 if ( p == NULL || p->sbiod == NULL ) {
1005 return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1009 sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1013 if ( buf == NULL || len <= 0 ) return 0;
1015 p = (struct tls_data *)ptr;
1017 if ( p == NULL || p->sbiod == NULL ) {
1021 return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1025 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1028 tls_session *session = arg;
1030 assert( sbiod != NULL );
1032 p = LBER_MALLOC( sizeof( *p ) );
1037 gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1038 gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1039 gnutls_transport_set_push_function( session->session, sb_gtls_send );
1042 sbiod->sbiod_pvt = p;
1047 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1051 assert( sbiod != NULL );
1052 assert( sbiod->sbiod_pvt != NULL );
1054 p = (struct tls_data *)sbiod->sbiod_pvt;
1055 gnutls_deinit ( p->ssl->session );
1056 LBER_FREE( p->ssl );
1057 LBER_FREE( sbiod->sbiod_pvt );
1058 sbiod->sbiod_pvt = NULL;
1063 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1067 assert( sbiod != NULL );
1068 assert( sbiod->sbiod_pvt != NULL );
1070 p = (struct tls_data *)sbiod->sbiod_pvt;
1071 gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1076 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1080 assert( sbiod != NULL );
1081 assert( sbiod->sbiod_pvt != NULL );
1083 p = (struct tls_data *)sbiod->sbiod_pvt;
1085 if ( opt == LBER_SB_OPT_GET_SSL ) {
1086 *((tls_session **)arg) = p->ssl;
1089 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1090 if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1095 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1099 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1105 assert( sbiod != NULL );
1106 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1108 p = (struct tls_data *)sbiod->sbiod_pvt;
1110 ret = gnutls_record_recv ( p->ssl->session, buf, len );
1112 case GNUTLS_E_INTERRUPTED:
1113 case GNUTLS_E_AGAIN:
1114 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1115 sock_errset(EWOULDBLOCK);
1118 case GNUTLS_E_REHANDSHAKE:
1119 for ( ret = gnutls_handshake ( p->ssl->session );
1120 ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1121 ret = gnutls_handshake ( p->ssl->session ) );
1122 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1126 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1132 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1138 assert( sbiod != NULL );
1139 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1141 p = (struct tls_data *)sbiod->sbiod_pvt;
1143 ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1145 if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1146 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1147 sock_errset(EWOULDBLOCK);
1150 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1155 #else /* !HAVE_GNUTLS */
1158 sb_tls_bio_create( BIO *b ) {
1167 sb_tls_bio_destroy( BIO *b )
1169 if ( b == NULL ) return 0;
1171 b->ptr = NULL; /* sb_tls_remove() will free it */
1178 sb_tls_bio_read( BIO *b, char *buf, int len )
1183 if ( buf == NULL || len <= 0 ) return 0;
1185 p = (struct tls_data *)b->ptr;
1187 if ( p == NULL || p->sbiod == NULL ) {
1191 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1193 BIO_clear_retry_flags( b );
1195 int err = sock_errno();
1196 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1197 BIO_set_retry_read( b );
1205 sb_tls_bio_write( BIO *b, const char *buf, int len )
1210 if ( buf == NULL || len <= 0 ) return 0;
1212 p = (struct tls_data *)b->ptr;
1214 if ( p == NULL || p->sbiod == NULL ) {
1218 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1220 BIO_clear_retry_flags( b );
1222 int err = sock_errno();
1223 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1224 BIO_set_retry_write( b );
1232 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1234 if ( cmd == BIO_CTRL_FLUSH ) {
1235 /* The OpenSSL library needs this */
1242 sb_tls_bio_gets( BIO *b, char *buf, int len )
1248 sb_tls_bio_puts( BIO *b, const char *str )
1250 return sb_tls_bio_write( b, str, strlen( str ) );
1253 static BIO_METHOD sb_tls_bio_method =
1255 ( 100 | 0x400 ), /* it's a source/sink BIO */
1267 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1272 assert( sbiod != NULL );
1274 p = LBER_MALLOC( sizeof( *p ) );
1279 p->ssl = (SSL *)arg;
1281 bio = BIO_new( &sb_tls_bio_method );
1282 bio->ptr = (void *)p;
1283 SSL_set_bio( p->ssl, bio, bio );
1284 sbiod->sbiod_pvt = p;
1289 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1293 assert( sbiod != NULL );
1294 assert( sbiod->sbiod_pvt != NULL );
1296 p = (struct tls_data *)sbiod->sbiod_pvt;
1298 LBER_FREE( sbiod->sbiod_pvt );
1299 sbiod->sbiod_pvt = NULL;
1304 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1308 assert( sbiod != NULL );
1309 assert( sbiod->sbiod_pvt != NULL );
1311 p = (struct tls_data *)sbiod->sbiod_pvt;
1312 SSL_shutdown( p->ssl );
1317 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1321 assert( sbiod != NULL );
1322 assert( sbiod->sbiod_pvt != NULL );
1324 p = (struct tls_data *)sbiod->sbiod_pvt;
1326 if ( opt == LBER_SB_OPT_GET_SSL ) {
1327 *((SSL **)arg) = p->ssl;
1330 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1331 if( SSL_pending( p->ssl ) > 0 ) {
1336 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1340 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1346 assert( sbiod != NULL );
1347 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1349 p = (struct tls_data *)sbiod->sbiod_pvt;
1351 ret = SSL_read( p->ssl, (char *)buf, len );
1353 errno = WSAGetLastError();
1355 err = SSL_get_error( p->ssl, ret );
1356 if (err == SSL_ERROR_WANT_READ ) {
1357 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1358 sock_errset(EWOULDBLOCK);
1361 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1366 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1372 assert( sbiod != NULL );
1373 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1375 p = (struct tls_data *)sbiod->sbiod_pvt;
1377 ret = SSL_write( p->ssl, (char *)buf, len );
1379 errno = WSAGetLastError();
1381 err = SSL_get_error( p->ssl, ret );
1382 if (err == SSL_ERROR_WANT_WRITE ) {
1383 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1384 sock_errset(EWOULDBLOCK);
1387 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1394 static Sockbuf_IO sb_tls_sbio =
1396 sb_tls_setup, /* sbi_setup */
1397 sb_tls_remove, /* sbi_remove */
1398 sb_tls_ctrl, /* sbi_ctrl */
1399 sb_tls_read, /* sbi_read */
1400 sb_tls_write, /* sbi_write */
1401 sb_tls_close /* sbi_close */
1405 /* Certs are not automatically varified during the handshake */
1407 tls_cert_verify( tls_session *ssl )
1409 unsigned int status = 0;
1411 time_t now = time(0);
1413 err = gnutls_certificate_verify_peers2( ssl->session, &status );
1415 Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1420 Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1424 if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1425 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1429 if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1430 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1436 #endif /* HAVE_GNUTLS */
1439 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
1440 * a SSL_CTX * or NULL, in which case the default ctx is used.
1444 * 0 - Success. Connection is ready for communication.
1445 * <0 - Error. Can't create a TLS stream.
1446 * >0 - Partial success.
1447 * Do a select (using information from lber_pvt_sb_needs_{read,write}
1452 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1454 Sockbuf *sb = conn->lconn_sb;
1458 if ( HAS_TLS( sb ) ) {
1459 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1462 struct ldapoptions *lo;
1465 ctx = ld->ld_options.ldo_tls_ctx;
1467 ssl = alloc_handle( ctx, 0 );
1469 if ( ssl == NULL ) return -1;
1472 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1473 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1475 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1476 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1478 lo = LDAP_INT_GLOBAL_OPT();
1480 ctx = lo->ldo_tls_ctx;
1481 ld->ld_options.ldo_tls_ctx = ctx;
1484 if ( ld->ld_options.ldo_tls_connect_cb )
1485 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1486 ld->ld_options.ldo_tls_connect_arg );
1487 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1488 ld->ld_options.ldo_tls_connect_cb )
1489 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1492 err = tls_session_connect( ssl );
1495 errno = WSAGetLastError();
1504 if ( update_flags( sb, ssl, err )) {
1509 if ((err = ERR_peek_error()))
1512 if ( ld->ld_error ) {
1513 LDAP_FREE( ld->ld_error );
1516 ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1520 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1524 if ( ld->ld_error ) __etoa(ld->ld_error);
1528 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1529 ld->ld_error ? ld->ld_error : "" ,0,0);
1531 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1532 LBER_SBIOD_LEVEL_TRANSPORT );
1534 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1535 LBER_SBIOD_LEVEL_TRANSPORT );
1541 if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1542 err = tls_cert_verify( ssl );
1543 if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1552 * Call this to do a TLS accept on a sockbuf.
1553 * Everything else is the same as with tls_connect.
1556 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1561 if ( HAS_TLS( sb ) ) {
1562 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1565 ssl = alloc_handle( ctx_arg, 1 );
1566 if ( ssl == NULL ) return -1;
1569 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1570 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1572 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1573 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1576 err = tls_session_accept( ssl );
1579 errno = WSAGetLastError();
1588 if ( update_flags( sb, ssl, err )) return 1;
1591 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1592 gnutls_strerror( err ),0,0 );
1594 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1597 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1598 LBER_SBIOD_LEVEL_TRANSPORT );
1600 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1601 LBER_SBIOD_LEVEL_TRANSPORT );
1607 if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1608 err = tls_cert_verify( ssl );
1609 if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1617 ldap_pvt_tls_inplace ( Sockbuf *sb )
1619 return HAS_TLS( sb ) ? 1 : 0;
1623 ldap_tls_inplace( LDAP *ld )
1627 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1628 sb = ld->ld_defconn->lconn_sb;
1630 } else if ( ld->ld_sb ) {
1637 return ldap_pvt_tls_inplace( sb );
1641 x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1643 BerElementBuffer berbuf;
1644 BerElement *ber = (BerElement *)&berbuf;
1649 ber_init2( ber, cert, LBER_USE_DER );
1650 tag = ber_skip_tag( ber, &len ); /* Sequence */
1651 tag = ber_skip_tag( ber, &len ); /* Sequence */
1652 tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1653 if ( tag == 0xa0 ) /* Version is optional */
1654 tag = ber_get_int( ber, &i ); /* Int: Version */
1655 tag = ber_get_int( ber, &i ); /* Int: Serial */
1656 tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1657 ber_skip_data( ber, len );
1658 if ( !get_subject ) {
1659 tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1661 tag = ber_skip_tag( ber, &len );
1662 ber_skip_data( ber, len );
1663 tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1664 ber_skip_data( ber, len );
1665 tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1667 len = ber_ptrlen( ber );
1668 dn->bv_val = cert->bv_val + len;
1669 dn->bv_len = cert->bv_len - len;
1674 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1676 if ( !session->peer_der_dn.bv_val ) {
1677 const gnutls_datum_t *peer_cert_list;
1681 peer_cert_list = gnutls_certificate_get_peers( session->session,
1683 if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1685 bv.bv_len = peer_cert_list->size;
1686 bv.bv_val = peer_cert_list->data;
1688 x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1689 *dnbv = session->peer_der_dn;
1695 tls_get_cert( SSL *s )
1697 /* If peer cert was bad, treat as if no cert was given */
1698 if (SSL_get_verify_result(s)) {
1699 /* If we can send an alert, do so */
1700 if (SSL_version(s) != SSL2_VERSION) {
1701 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1705 return SSL_get_peer_certificate(s);
1709 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1712 X509 *x = tls_get_cert( session );
1716 return LDAP_INVALID_CREDENTIALS;
1718 xn = X509_get_subject_name(x);
1719 dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1720 dnbv->bv_val = xn->bytes->data;
1723 #endif /* HAVE_GNUTLS */
1726 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1727 LDAPDN_rewrite_dummy *func, unsigned flags )
1729 tls_session *session = s;
1733 rc = tls_get_cert_dn( session, &bvdn );
1734 if ( rc ) return rc;
1736 rc = ldap_X509dn2bv( &bvdn, dn,
1737 (LDAPDN_rewrite_func *)func, flags);
1741 /* what kind of hostname were we given? */
1749 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1751 tls_session *session = s;
1753 const gnutls_datum_t *peer_cert_list;
1756 char altname[NI_MAXHOST];
1759 gnutls_x509_crt_t cert;
1763 char *domain = NULL;
1764 #ifdef LDAP_PF_INET6
1765 struct in6_addr addr;
1767 struct in_addr addr;
1769 int n, len1 = 0, len2 = 0;
1771 time_t now = time(0);
1773 if( ldap_int_hostname &&
1774 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1776 name = ldap_int_hostname;
1781 peer_cert_list = gnutls_certificate_get_peers( session->session,
1783 if ( !peer_cert_list ) {
1784 Debug( LDAP_DEBUG_ANY,
1785 "TLS: unable to get peer certificate.\n",
1787 /* If this was a fatal condition, things would have
1788 * aborted long before now.
1790 return LDAP_SUCCESS;
1792 ret = gnutls_x509_crt_init( &cert );
1794 return LDAP_LOCAL_ERROR;
1795 ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1797 gnutls_x509_crt_deinit( cert );
1798 return LDAP_LOCAL_ERROR;
1801 #ifdef LDAP_PF_INET6
1802 if (name[0] == '[' && strchr(name, ']')) {
1803 char *n2 = ldap_strdup(name+1);
1804 *strchr(n2, ']') = 2;
1805 if (inet_pton(AF_INET6, n2, &addr))
1810 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1811 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1814 if (ntype == IS_DNS) {
1815 len1 = strlen(name);
1816 domain = strchr(name, '.');
1818 len2 = len1 - (domain-name);
1822 for ( i=0, ret=0; ret >= 0; i++ ) {
1823 altnamesize = sizeof(altname);
1824 ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1825 altname, &altnamesize, NULL );
1826 if ( ret < 0 ) break;
1829 if ( altnamesize == 0 ) continue;
1831 if ( ret == GNUTLS_SAN_DNSNAME ) {
1832 if (ntype != IS_DNS) continue;
1834 /* Is this an exact match? */
1835 if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1839 /* Is this a wildcard match? */
1840 if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1841 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1845 } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1846 if (ntype == IS_DNS) continue;
1848 #ifdef LDAP_PF_INET6
1849 if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1853 if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1856 if (!memcmp(altname, &addr, altnamesize)) {
1864 altnamesize = sizeof(altname);
1865 ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1866 0, 0, altname, &altnamesize );
1868 Debug( LDAP_DEBUG_ANY,
1869 "TLS: unable to get common name from peer certificate.\n",
1871 ret = LDAP_CONNECT_ERROR;
1872 if ( ld->ld_error ) {
1873 LDAP_FREE( ld->ld_error );
1875 ld->ld_error = LDAP_STRDUP(
1876 _("TLS: unable to get CN from peer certificate"));
1879 ret = LDAP_LOCAL_ERROR;
1880 if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1883 } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1884 /* Is this a wildcard match? */
1886 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1892 if( ret == LDAP_LOCAL_ERROR ) {
1893 altname[altnamesize] = '\0';
1894 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1895 "common name in certificate (%s).\n",
1897 ret = LDAP_CONNECT_ERROR;
1898 if ( ld->ld_error ) {
1899 LDAP_FREE( ld->ld_error );
1901 ld->ld_error = LDAP_STRDUP(
1902 _("TLS: hostname does not match CN in peer certificate"));
1905 gnutls_x509_crt_deinit( cert );
1909 #else /* !HAVE_GNUTLS */
1912 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1914 int i, ret = LDAP_LOCAL_ERROR;
1919 #ifdef LDAP_PF_INET6
1920 struct in6_addr addr;
1922 struct in_addr addr;
1925 if( ldap_int_hostname &&
1926 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1928 name = ldap_int_hostname;
1933 x = tls_get_cert((SSL *)s);
1935 Debug( LDAP_DEBUG_ANY,
1936 "TLS: unable to get peer certificate.\n",
1938 /* If this was a fatal condition, things would have
1939 * aborted long before now.
1941 return LDAP_SUCCESS;
1944 #ifdef LDAP_PF_INET6
1945 if (name[0] == '[' && strchr(name, ']')) {
1946 char *n2 = ldap_strdup(name+1);
1947 *strchr(n2, ']') = 2;
1948 if (inet_pton(AF_INET6, n2, &addr))
1953 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1954 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1957 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1960 STACK_OF(GENERAL_NAME) *alt;
1962 ex = X509_get_ext(x, i);
1963 alt = X509V3_EXT_d2i(ex);
1965 int n, len1 = 0, len2 = 0;
1966 char *domain = NULL;
1969 if (ntype == IS_DNS) {
1970 len1 = strlen(name);
1971 domain = strchr(name, '.');
1973 len2 = len1 - (domain-name);
1976 n = sk_GENERAL_NAME_num(alt);
1977 for (i=0; i<n; i++) {
1980 gn = sk_GENERAL_NAME_value(alt, i);
1981 if (gn->type == GEN_DNS) {
1982 if (ntype != IS_DNS) continue;
1984 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1985 sl = ASN1_STRING_length(gn->d.ia5);
1988 if (sl == 0) continue;
1990 /* Is this an exact match? */
1991 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1995 /* Is this a wildcard match? */
1996 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1997 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2002 } else if (gn->type == GEN_IPADD) {
2003 if (ntype == IS_DNS) continue;
2005 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2006 sl = ASN1_STRING_length(gn->d.ia5);
2008 #ifdef LDAP_PF_INET6
2009 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2013 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2016 if (!memcmp(sn, &addr, sl)) {
2022 GENERAL_NAMES_free(alt);
2023 if (i < n) { /* Found a match */
2029 if (ret != LDAP_SUCCESS) {
2034 xn = X509_get_subject_name(x);
2035 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2036 buf, sizeof(buf)) == -1)
2038 Debug( LDAP_DEBUG_ANY,
2039 "TLS: unable to get common name from peer certificate.\n",
2041 ret = LDAP_CONNECT_ERROR;
2042 if ( ld->ld_error ) {
2043 LDAP_FREE( ld->ld_error );
2045 ld->ld_error = LDAP_STRDUP(
2046 _("TLS: unable to get CN from peer certificate"));
2048 } else if (strcasecmp(name, buf) == 0 ) {
2051 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2052 char *domain = strchr(name, '.');
2058 dlen = sl - (domain-name);
2061 /* Is this a wildcard match? */
2062 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2068 if( ret == LDAP_LOCAL_ERROR ) {
2069 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2070 "common name in certificate (%s).\n",
2072 ret = LDAP_CONNECT_ERROR;
2073 if ( ld->ld_error ) {
2074 LDAP_FREE( ld->ld_error );
2076 ld->ld_error = LDAP_STRDUP(
2077 _("TLS: hostname does not match CN in peer certificate"));
2086 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2091 case LDAP_OPT_X_TLS_CACERTFILE:
2092 case LDAP_OPT_X_TLS_CACERTDIR:
2093 case LDAP_OPT_X_TLS_CERTFILE:
2094 case LDAP_OPT_X_TLS_KEYFILE:
2095 case LDAP_OPT_X_TLS_RANDOM_FILE:
2096 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2097 case LDAP_OPT_X_TLS_DHFILE:
2099 case LDAP_OPT_X_TLS_CRLFILE:
2101 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2103 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2104 case LDAP_OPT_X_TLS:
2106 if ( strcasecmp( arg, "never" ) == 0 ) {
2107 i = LDAP_OPT_X_TLS_NEVER ;
2109 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
2110 i = LDAP_OPT_X_TLS_DEMAND ;
2112 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
2113 i = LDAP_OPT_X_TLS_ALLOW ;
2115 } else if ( strcasecmp( arg, "try" ) == 0 ) {
2116 i = LDAP_OPT_X_TLS_TRY ;
2118 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2119 ( strcasecmp( arg, "on" ) == 0 ) ||
2120 ( strcasecmp( arg, "yes" ) == 0) ||
2121 ( strcasecmp( arg, "true" ) == 0 ) )
2123 i = LDAP_OPT_X_TLS_HARD ;
2127 return ldap_pvt_tls_set_option( ld, option, &i );
2130 #ifdef HAVE_OPENSSL_CRL
2131 case LDAP_OPT_X_TLS_CRLCHECK:
2133 if ( strcasecmp( arg, "none" ) == 0 ) {
2134 i = LDAP_OPT_X_TLS_CRL_NONE ;
2135 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
2136 i = LDAP_OPT_X_TLS_CRL_PEER ;
2137 } else if ( strcasecmp( arg, "all" ) == 0 ) {
2138 i = LDAP_OPT_X_TLS_CRL_ALL ;
2141 return ldap_pvt_tls_set_option( ld, option, &i );
2150 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2152 struct ldapoptions *lo;
2155 assert( LDAP_VALID( ld ) );
2157 if( !LDAP_VALID( ld ) ) {
2158 return LDAP_OPT_ERROR;
2161 lo = &ld->ld_options;
2164 /* Get pointer to global option structure */
2165 lo = LDAP_INT_GLOBAL_OPT();
2167 return LDAP_NO_MEMORY;
2172 case LDAP_OPT_X_TLS:
2173 *(int *)arg = lo->ldo_tls_mode;
2175 case LDAP_OPT_X_TLS_CTX:
2176 *(void **)arg = lo->ldo_tls_ctx;
2177 if ( lo->ldo_tls_ctx ) {
2178 tls_ctx_ref( lo->ldo_tls_ctx );
2181 case LDAP_OPT_X_TLS_CACERTFILE:
2182 *(char **)arg = lo->ldo_tls_cacertfile ?
2183 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2185 case LDAP_OPT_X_TLS_CACERTDIR:
2186 *(char **)arg = lo->ldo_tls_cacertdir ?
2187 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2189 case LDAP_OPT_X_TLS_CERTFILE:
2190 *(char **)arg = lo->ldo_tls_certfile ?
2191 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2193 case LDAP_OPT_X_TLS_KEYFILE:
2194 *(char **)arg = lo->ldo_tls_keyfile ?
2195 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2197 case LDAP_OPT_X_TLS_DHFILE:
2198 *(char **)arg = lo->ldo_tls_dhfile ?
2199 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2202 case LDAP_OPT_X_TLS_CRLFILE:
2203 *(char **)arg = lo->ldo_tls_crlfile ?
2204 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2207 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2208 *(int *)arg = lo->ldo_tls_require_cert;
2210 #ifdef HAVE_OPENSSL_CRL
2211 case LDAP_OPT_X_TLS_CRLCHECK:
2212 *(int *)arg = lo->ldo_tls_crlcheck;
2215 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2216 *(char **)arg = lo->ldo_tls_ciphersuite ?
2217 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2219 case LDAP_OPT_X_TLS_RANDOM_FILE:
2221 *(char **)arg = tls_opt_randfile ?
2222 LDAP_STRDUP( tls_opt_randfile ) : NULL;
2224 *(char **)arg = NULL;
2227 case LDAP_OPT_X_TLS_SSL_CTX: {
2230 LDAPConn *conn = ld->ld_defconn;
2231 if ( conn != NULL ) {
2232 Sockbuf *sb = conn->lconn_sb;
2233 retval = ldap_pvt_tls_sb_ctx( sb );
2236 *(void **)arg = retval;
2239 case LDAP_OPT_X_TLS_CONNECT_CB:
2240 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2242 case LDAP_OPT_X_TLS_CONNECT_ARG:
2243 *(void **)arg = lo->ldo_tls_connect_arg;
2252 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2254 struct ldapoptions *lo;
2257 assert( LDAP_VALID( ld ) );
2259 if( !LDAP_VALID( ld ) ) {
2260 return LDAP_OPT_ERROR;
2263 lo = &ld->ld_options;
2266 /* Get pointer to global option structure */
2267 lo = LDAP_INT_GLOBAL_OPT();
2269 return LDAP_NO_MEMORY;
2274 case LDAP_OPT_X_TLS:
2275 if ( !arg ) return -1;
2277 switch( *(int *) arg ) {
2278 case LDAP_OPT_X_TLS_NEVER:
2279 case LDAP_OPT_X_TLS_DEMAND:
2280 case LDAP_OPT_X_TLS_ALLOW:
2281 case LDAP_OPT_X_TLS_TRY:
2282 case LDAP_OPT_X_TLS_HARD:
2284 lo->ldo_tls_mode = *(int *)arg;
2291 case LDAP_OPT_X_TLS_CTX:
2292 if ( lo->ldo_tls_ctx )
2293 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2294 lo->ldo_tls_ctx = arg;
2295 tls_ctx_ref( lo->ldo_tls_ctx );
2297 case LDAP_OPT_X_TLS_CONNECT_CB:
2298 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2300 case LDAP_OPT_X_TLS_CONNECT_ARG:
2301 lo->ldo_tls_connect_arg = arg;
2303 case LDAP_OPT_X_TLS_CACERTFILE:
2304 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2305 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2307 case LDAP_OPT_X_TLS_CACERTDIR:
2308 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2309 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2311 case LDAP_OPT_X_TLS_CERTFILE:
2312 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2313 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2315 case LDAP_OPT_X_TLS_KEYFILE:
2316 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2317 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2319 case LDAP_OPT_X_TLS_DHFILE:
2320 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2321 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2324 case LDAP_OPT_X_TLS_CRLFILE:
2325 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2326 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2329 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2330 if ( !arg ) return -1;
2331 switch( *(int *) arg ) {
2332 case LDAP_OPT_X_TLS_NEVER:
2333 case LDAP_OPT_X_TLS_DEMAND:
2334 case LDAP_OPT_X_TLS_ALLOW:
2335 case LDAP_OPT_X_TLS_TRY:
2336 case LDAP_OPT_X_TLS_HARD:
2337 lo->ldo_tls_require_cert = * (int *) arg;
2341 #ifdef HAVE_OPENSSL_CRL
2342 case LDAP_OPT_X_TLS_CRLCHECK:
2343 if ( !arg ) return -1;
2344 switch( *(int *) arg ) {
2345 case LDAP_OPT_X_TLS_CRL_NONE:
2346 case LDAP_OPT_X_TLS_CRL_PEER:
2347 case LDAP_OPT_X_TLS_CRL_ALL:
2348 lo->ldo_tls_crlcheck = * (int *) arg;
2353 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2354 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2355 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2358 case LDAP_OPT_X_TLS_RANDOM_FILE:
2362 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2363 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2367 case LDAP_OPT_X_TLS_NEWCTX:
2368 if ( !arg ) return -1;
2369 if ( lo->ldo_tls_ctx )
2370 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2371 lo->ldo_tls_ctx = NULL;
2372 return ldap_int_tls_init_ctx( lo, *(int *)arg );
2380 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2382 Sockbuf *sb = conn->lconn_sb;
2387 host = srv->lud_host;
2389 host = conn->lconn_server->lud_host;
2392 /* avoid NULL host */
2393 if( host == NULL ) {
2397 (void) ldap_pvt_tls_init();
2400 * Fortunately, the lib uses blocking io...
2402 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2403 ld->ld_errno = LDAP_CONNECT_ERROR;
2404 return (ld->ld_errno);
2407 ssl = ldap_pvt_tls_sb_ctx( sb );
2408 assert( ssl != NULL );
2411 * compare host with name(s) in certificate
2413 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2414 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2415 if (ld->ld_errno != LDAP_SUCCESS) {
2416 return ld->ld_errno;
2420 return LDAP_SUCCESS;
2424 /* Derived from openssl/apps/s_cb.c */
2426 tls_info_cb( const SSL *ssl, int where, int ret )
2430 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2432 w = where & ~SSL_ST_MASK;
2433 if ( w & SSL_ST_CONNECT ) {
2435 } else if ( w & SSL_ST_ACCEPT ) {
2443 state = LDAP_STRDUP( state );
2447 if ( where & SSL_CB_LOOP ) {
2448 Debug( LDAP_DEBUG_TRACE,
2449 "TLS trace: %s:%s\n",
2452 } else if ( where & SSL_CB_ALERT ) {
2453 char *atype = (char *) SSL_alert_type_string_long( ret );
2454 char *adesc = (char *) SSL_alert_desc_string_long( ret );
2455 op = ( where & SSL_CB_READ ) ? "read" : "write";
2458 atype = LDAP_STRDUP( atype );
2462 adesc = LDAP_STRDUP( adesc );
2466 Debug( LDAP_DEBUG_TRACE,
2467 "TLS trace: SSL3 alert %s:%s:%s\n",
2470 if ( atype ) LDAP_FREE( atype );
2471 if ( adesc ) LDAP_FREE( adesc );
2473 } else if ( where & SSL_CB_EXIT ) {
2475 Debug( LDAP_DEBUG_TRACE,
2476 "TLS trace: %s:failed in %s\n",
2478 } else if ( ret < 0 ) {
2479 Debug( LDAP_DEBUG_TRACE,
2480 "TLS trace: %s:error in %s\n",
2485 if ( state ) LDAP_FREE( state );
2490 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2499 char *certerr = NULL;
2501 cert = X509_STORE_CTX_get_current_cert( ctx );
2502 errnum = X509_STORE_CTX_get_error( ctx );
2503 errdepth = X509_STORE_CTX_get_error_depth( ctx );
2506 * X509_get_*_name return pointers to the internal copies of
2507 * those things requested. So do not free them.
2509 subject = X509_get_subject_name( cert );
2510 issuer = X509_get_issuer_name( cert );
2511 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2512 sname = X509_NAME_oneline( subject, NULL, 0 );
2513 iname = X509_NAME_oneline( issuer, NULL, 0 );
2514 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2516 if ( sname ) __etoa( sname );
2517 if ( iname ) __etoa( iname );
2519 certerr = LDAP_STRDUP( certerr );
2523 Debug( LDAP_DEBUG_TRACE,
2524 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
2526 sname ? sname : "-unknown-" );
2527 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2529 Debug( LDAP_DEBUG_ANY,
2530 "TLS certificate verification: Error, %s\n",
2534 CRYPTO_free ( sname );
2536 CRYPTO_free ( iname );
2538 if ( certerr ) LDAP_FREE( certerr );
2544 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2546 (void) tls_verify_cb( ok, ctx );
2550 /* Inspired by ERR_print_errors in OpenSSL */
2552 tls_report_error( void )
2559 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2560 ERR_error_string_n( l, buf, sizeof( buf ) );
2563 file = LDAP_STRDUP( file );
2564 __etoa( (char *)file );
2568 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2571 if ( file ) LDAP_FREE( (void *)file );
2577 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2581 /* FIXME: Pregenerate the key on startup */
2582 /* FIXME: Who frees the key? */
2583 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2586 Debug( LDAP_DEBUG_ANY,
2587 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
2588 key_length, is_export ? "export" : "domestic", 0 );
2595 tls_seed_PRNG( const char *randfile )
2597 #ifndef URANDOM_DEVICE
2598 /* no /dev/urandom (or equiv) */
2600 char buffer[MAXPATHLEN];
2602 if (randfile == NULL) {
2603 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2604 * If $HOME is not set or buffer too small to hold the pathname,
2605 * an error occurs. - From RAND_file_name() man page.
2606 * The fact is that when $HOME is NULL, .rnd is used.
2608 randfile = RAND_file_name( buffer, sizeof( buffer ) );
2610 } else if (RAND_egd(randfile) > 0) {
2615 if (randfile == NULL) {
2616 Debug( LDAP_DEBUG_ANY,
2617 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2622 total = RAND_load_file(randfile, -1);
2624 if (RAND_status() == 0) {
2625 Debug( LDAP_DEBUG_ANY,
2626 "TLS: PRNG not been seeded with enough data\n",
2631 /* assume if there was enough bits to seed that it's okay
2632 * to write derived bits to the file
2634 RAND_write_file(randfile);
2648 /* From the OpenSSL 0.9.7 distro */
2649 static const char dhpem512[] =
2650 "-----BEGIN DH PARAMETERS-----\n\
2651 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2652 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2653 -----END DH PARAMETERS-----\n";
2655 static const char dhpem1024[] =
2656 "-----BEGIN DH PARAMETERS-----\n\
2657 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2658 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2659 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2660 -----END DH PARAMETERS-----\n";
2662 static const char dhpem2048[] =
2663 "-----BEGIN DH PARAMETERS-----\n\
2664 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2665 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2666 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2667 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2668 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2669 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2670 -----END DH PARAMETERS-----\n";
2672 static const char dhpem4096[] =
2673 "-----BEGIN DH PARAMETERS-----\n\
2674 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2675 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2676 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2677 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2678 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2679 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2680 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2681 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2682 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2683 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2684 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2685 -----END DH PARAMETERS-----\n";
2687 static const struct dhinfo dhpem[] = {
2688 { 512, dhpem512, sizeof(dhpem512) },
2689 { 1024, dhpem1024, sizeof(dhpem1024) },
2690 { 2048, dhpem2048, sizeof(dhpem2048) },
2691 { 4096, dhpem4096, sizeof(dhpem4096) },
2696 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2698 struct dhplist *p = NULL;
2703 /* Do we have params of this length already? */
2704 #ifdef LDAP_R_COMPILE
2705 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2707 for ( p = dhparams; p; p=p->next ) {
2708 if ( p->keylength == key_length ) {
2709 #ifdef LDAP_R_COMPILE
2710 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2716 /* No - check for hardcoded params */
2718 for (i=0; dhpem[i].keylength; i++) {
2719 if ( dhpem[i].keylength == key_length ) {
2720 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2726 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2730 /* Generating on the fly is expensive/slow... */
2732 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2735 p = LDAP_MALLOC( sizeof(struct dhplist) );
2737 p->keylength = key_length;
2744 #ifdef LDAP_R_COMPILE
2745 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2751 #endif /* HAVE_OPENSSL */
2754 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2759 if (HAS_TLS( sb )) {
2760 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2769 ldap_pvt_tls_get_strength( void *s )
2774 c = SSL_get_current_cipher((SSL *)s);
2775 return SSL_CIPHER_get_bits(c, NULL);
2776 #elif defined(HAVE_GNUTLS)
2777 tls_session *session = s;
2778 gnutls_cipher_algorithm_t c;
2780 c = gnutls_cipher_get( session->session );
2781 return gnutls_cipher_get_key_size( c );
2789 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2792 struct berval der_dn;
2798 x = SSL_get_certificate((SSL *)s);
2800 if (!x) return LDAP_INVALID_CREDENTIALS;
2802 xn = X509_get_subject_name(x);
2803 der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2804 der_dn.bv_val = xn->bytes->data;
2805 #elif defined(HAVE_GNUTLS)
2806 tls_session *session = s;
2807 const gnutls_datum_t *x;
2810 x = gnutls_certificate_get_ours( session->session );
2812 if (!x) return LDAP_INVALID_CREDENTIALS;
2814 bv.bv_val = x->data;
2815 bv.bv_len = x->size;
2817 x509_cert_get_dn( &bv, &der_dn, 1 );
2819 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2821 #else /* !HAVE_TLS */
2822 return LDAP_NOT_SUPPORTED;
2827 ldap_start_tls( LDAP *ld,
2828 LDAPControl **serverctrls,
2829 LDAPControl **clientctrls,
2832 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2833 NULL, serverctrls, clientctrls, msgidp );
2837 ldap_install_tls( LDAP *ld )
2840 return LDAP_NOT_SUPPORTED;
2842 if ( ldap_tls_inplace( ld ) ) {
2843 return LDAP_LOCAL_ERROR;
2846 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2851 ldap_start_tls_s ( LDAP *ld,
2852 LDAPControl **serverctrls,
2853 LDAPControl **clientctrls )
2856 return LDAP_NOT_SUPPORTED;
2859 char *rspoid = NULL;
2860 struct berval *rspdata = NULL;
2862 /* XXYYZ: this initiates operation only on default connection! */
2864 if ( ldap_tls_inplace( ld ) ) {
2865 return LDAP_LOCAL_ERROR;
2868 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2869 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2871 if ( rspoid != NULL ) {
2875 if ( rspdata != NULL ) {
2876 ber_bvfree( rspdata );
2879 if ( rc == LDAP_SUCCESS ) {
2880 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2887 /* These tags probably all belong in lber.h, but they're
2888 * not normally encountered when processing LDAP, so maybe
2889 * they belong somewhere else instead.
2892 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2894 /* Tags for string types used in a DirectoryString.
2896 * Note that IA5string is not one of the defined choices for
2897 * DirectoryString in X.520, but it gets used for email AVAs.
2899 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2900 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2901 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2902 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2903 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2904 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2907 find_oid( struct berval *oid )
2911 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2912 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2913 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2919 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2920 * x509_name must be raw DER. If func is non-NULL, the
2921 * constructed DN will use numeric OIDs to identify attributeTypes,
2922 * and the func() will be invoked to rewrite the DN with the given
2925 * Otherwise the DN will use shortNames from a hardcoded table.
2928 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2933 LDAPAVA *newAVA, *baseAVA;
2934 BerElementBuffer berbuf;
2935 BerElement *ber = (BerElement *)&berbuf;
2936 char oids[8192], *oidptr = oids, *oidbuf = NULL;
2938 char *dn_end, *rdn_end;
2939 int i, navas, nrdns, rc = LDAP_SUCCESS;
2940 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2946 struct berval Oid, Val, oid2, *in = x509_name;
2948 assert( bv != NULL );
2956 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2957 * An AVA is a SEQUENCE of attr and value.
2958 * Count the number of AVAs and RDNs
2960 ber_init2( ber, in, LBER_USE_DER );
2961 tag = ber_peek_tag( ber, &len );
2962 if ( tag != LBER_SEQUENCE )
2963 return LDAP_DECODING_ERROR;
2965 for ( tag = ber_first_element( ber, &len, &dn_end );
2967 tag = ber_next_element( ber, &len, dn_end )) {
2969 for ( tag = ber_first_element( ber, &len, &rdn_end );
2970 tag == LBER_SEQUENCE;
2971 tag = ber_next_element( ber, &len, rdn_end )) {
2972 tag = ber_skip_tag( ber, &len );
2973 ber_skip_data( ber, len );
2978 /* Allocate the DN/RDN/AVA stuff as a single block */
2979 dnsize = sizeof(LDAPRDN) * (nrdns+1);
2980 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
2981 dnsize += sizeof(LDAPAVA) * navas;
2982 if (dnsize > sizeof(ptrs)) {
2983 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
2984 if ( newDN == NULL )
2985 return LDAP_NO_MEMORY;
2987 newDN = (LDAPDN)(char *)ptrs;
2990 newDN[nrdns] = NULL;
2991 newRDN = (LDAPRDN)(newDN + nrdns+1);
2992 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
2995 /* Rewind and start extracting */
2998 tag = ber_first_element( ber, &len, &dn_end );
2999 for ( i = nrdns - 1; i >= 0; i-- ) {
3002 for ( tag = ber_first_element( ber, &len, &rdn_end );
3003 tag == LBER_SEQUENCE;
3004 tag = ber_next_element( ber, &len, rdn_end )) {
3007 tag = ber_skip_tag( ber, &len );
3008 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
3009 if ( tag != LBER_TAG_OID ) {
3010 rc = LDAP_DECODING_ERROR;
3014 oid2.bv_val = oidptr;
3015 oid2.bv_len = oidrem;
3016 ber_decode_oid( &Oid, &oid2 );
3017 oidname = find_oid( &oid2 );
3019 newAVA->la_attr = oid2;
3020 oidptr += oid2.bv_len + 1;
3021 oidrem -= oid2.bv_len + 1;
3023 /* Running out of OID buffer space? */
3025 if ( oidsize == 0 ) {
3026 oidsize = sizeof(oids) * 2;
3028 oidbuf = LDAP_MALLOC( oidsize );
3029 if ( oidbuf == NULL ) goto nomem;
3033 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3034 if ( oidbuf == NULL ) goto nomem;
3035 /* Buffer moved! Fix AVA pointers */
3036 if ( old != oidbuf ) {
3038 long dif = oidbuf - old;
3040 for (a=baseAVA; a<=newAVA; a++){
3041 if (a->la_attr.bv_val >= old &&
3042 a->la_attr.bv_val <= (old + oidsize))
3043 a->la_attr.bv_val += dif;
3046 oidptr = oidbuf + oidsize - oidrem;
3053 newAVA->la_attr = oidname->oid;
3055 newAVA->la_attr = oidname->name;
3058 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
3060 case LBER_TAG_UNIVERSAL:
3061 /* This uses 32-bit ISO 10646-1 */
3062 csize = 4; goto to_utf8;
3064 /* This uses 16-bit ISO 10646-1 */
3065 csize = 2; goto to_utf8;
3066 case LBER_TAG_TELETEX:
3067 /* This uses 8-bit, assume ISO 8859-1 */
3069 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3070 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3071 if (rc != LDAP_SUCCESS) goto nomem;
3072 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3075 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3076 /* This is already in UTF-8 encoding */
3078 case LBER_TAG_PRINTABLE:
3079 /* These are always 7-bit strings */
3080 newAVA->la_value = Val;
3084 newAVA->la_private = NULL;
3085 newAVA->la_flags = LDAP_AVA_STRING;
3089 tag = ber_next_element( ber, &len, dn_end );
3093 rc = func( newDN, flags, NULL );
3094 if ( rc != LDAP_SUCCESS )
3098 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3101 for (;baseAVA < newAVA; baseAVA++) {
3102 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3103 LDAP_FREE( baseAVA->la_attr.bv_val );
3104 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3105 LDAP_FREE( baseAVA->la_value.bv_val );
3109 LDAP_FREE( oidbuf );
3110 if ( newDN != (LDAPDN)(char *) ptrs )