1 /* tls.c - Handle tls/ssl using SSLeay or OpenSSL. */
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>.
18 #include "ldap_config.h"
22 #include <ac/stdlib.h>
24 #include <ac/socket.h>
25 #include <ac/string.h>
28 #include <ac/unistd.h>
30 #include <ac/dirent.h>
37 #include <ldap_pvt_thread.h>
40 #ifdef HAVE_OPENSSL_SSL_H
41 #include <openssl/ssl.h>
42 #include <openssl/x509v3.h>
43 #include <openssl/err.h>
44 #include <openssl/rand.h>
45 #include <openssl/safestack.h>
46 #elif defined( HAVE_SSL_H )
50 static int tls_opt_trace = 1;
51 static char *tls_opt_certfile = NULL;
52 static char *tls_opt_keyfile = NULL;
53 static char *tls_opt_dhfile = NULL;
54 static char *tls_opt_cacertfile = NULL;
55 static char *tls_opt_cacertdir = NULL;
56 static int tls_opt_require_cert = LDAP_OPT_X_TLS_DEMAND;
57 #ifdef HAVE_OPENSSL_CRL
58 static int tls_opt_crlcheck = LDAP_OPT_X_TLS_CRL_NONE;
60 static char *tls_opt_ciphersuite = NULL;
61 static char *tls_opt_randfile = NULL;
63 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
64 (void *)&sb_tls_sbio )
66 static void tls_report_error( void );
68 static void tls_info_cb( const SSL *ssl, int where, int ret );
69 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
70 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
71 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
72 static STACK_OF(X509_NAME) * get_ca_list( char * bundle, char * dir );
74 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
76 static SSL_CTX *tls_def_ctx = NULL;
78 typedef struct dhplist {
84 static dhplist *dhparams;
86 static int tls_seed_PRNG( const char *randfile );
90 * provide mutexes for the SSLeay library.
92 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
94 static void tls_locking_cb( int mode, int type, const char *file, int line )
96 if ( mode & CRYPTO_LOCK ) {
97 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
99 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
104 * an extra mutex for the default ctx.
107 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
108 static ldap_pvt_thread_mutex_t tls_connect_mutex;
110 static void tls_init_threads( void )
114 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
115 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
117 CRYPTO_set_locking_callback( tls_locking_cb );
118 CRYPTO_set_id_callback( ldap_pvt_thread_self );
119 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
120 * is an integral type that fits in an unsigned long
123 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
124 ldap_pvt_thread_mutex_init( &tls_connect_mutex );
126 #endif /* LDAP_R_COMPILE */
129 * Tear down the TLS subsystem. Should only be called once.
132 ldap_pvt_tls_destroy( void )
134 SSL_CTX_free(tls_def_ctx);
141 if ( tls_opt_certfile ) {
142 LDAP_FREE( tls_opt_certfile );
143 tls_opt_certfile = NULL;
145 if ( tls_opt_keyfile ) {
146 LDAP_FREE( tls_opt_keyfile );
147 tls_opt_keyfile = NULL;
149 if ( tls_opt_dhfile ) {
150 LDAP_FREE( tls_opt_dhfile );
151 tls_opt_dhfile = NULL;
153 if ( tls_opt_cacertfile ) {
154 LDAP_FREE( tls_opt_cacertfile );
155 tls_opt_cacertfile = NULL;
157 if ( tls_opt_cacertdir ) {
158 LDAP_FREE( tls_opt_cacertdir );
159 tls_opt_cacertdir = NULL;
161 if ( tls_opt_ciphersuite ) {
162 LDAP_FREE( tls_opt_ciphersuite );
163 tls_opt_ciphersuite = NULL;
165 if ( tls_opt_randfile ) {
166 LDAP_FREE( tls_opt_randfile );
167 tls_opt_randfile = NULL;
172 * Initialize TLS subsystem. Should be called only once.
175 ldap_pvt_tls_init( void )
177 static int tls_initialized = 0;
179 if ( tls_initialized++ ) return 0;
183 char *file = LDAP_STRDUP( tls_opt_randfile );
184 if ( file ) __atoe( file );
185 (void) tls_seed_PRNG( file );
189 (void) tls_seed_PRNG( tls_opt_randfile );
192 #ifdef LDAP_R_COMPILE
196 SSL_load_error_strings();
197 SSLeay_add_ssl_algorithms();
199 /* FIXME: mod_ssl does this */
200 X509V3_add_standard_extensions();
205 * initialize the default context
208 ldap_pvt_tls_init_def_ctx( int is_server )
210 STACK_OF(X509_NAME) *calist;
212 char *ciphersuite = tls_opt_ciphersuite;
213 char *cacertfile = tls_opt_cacertfile;
214 char *cacertdir = tls_opt_cacertdir;
215 char *certfile = tls_opt_certfile;
216 char *keyfile = tls_opt_keyfile;
217 char *dhfile = tls_opt_dhfile;
219 #ifdef LDAP_R_COMPILE
220 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
223 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
224 /* minimum configuration not provided */
225 #ifdef LDAP_R_COMPILE
226 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
228 return LDAP_NOT_SUPPORTED;
232 /* This ASCII/EBCDIC handling is a real pain! */
234 ciphersuite = LDAP_STRDUP( ciphersuite );
235 __atoe( ciphersuite );
238 cacertfile = LDAP_STRDUP( cacertfile );
239 __atoe( cacertfile );
242 cacertdir = LDAP_STRDUP( cacertdir );
246 certfile = LDAP_STRDUP( certfile );
250 keyfile = LDAP_STRDUP( keyfile );
254 dhfile = LDAP_STRDUP( dhfile );
258 if ( tls_def_ctx == NULL ) {
260 tls_def_ctx = SSL_CTX_new( SSLv23_method() );
261 if ( tls_def_ctx == NULL ) {
262 Debug( LDAP_DEBUG_ANY,
263 "TLS: could not allocate default ctx (%lu).\n",
264 ERR_peek_error(),0,0);
269 SSL_CTX_set_session_id_context( tls_def_ctx,
270 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
272 if ( tls_opt_ciphersuite &&
273 !SSL_CTX_set_cipher_list( tls_def_ctx, ciphersuite ) )
275 Debug( LDAP_DEBUG_ANY,
276 "TLS: could not set cipher list %s.\n",
277 tls_opt_ciphersuite, 0, 0 );
283 if (tls_opt_cacertfile != NULL || tls_opt_cacertdir != NULL) {
284 if ( !SSL_CTX_load_verify_locations( tls_def_ctx,
285 cacertfile, cacertdir ) ||
286 !SSL_CTX_set_default_verify_paths( tls_def_ctx ) )
288 Debug( LDAP_DEBUG_ANY, "TLS: "
289 "could not load verify locations (file:`%s',dir:`%s').\n",
290 tls_opt_cacertfile ? tls_opt_cacertfile : "",
291 tls_opt_cacertdir ? tls_opt_cacertdir : "",
298 calist = get_ca_list( cacertfile, cacertdir );
300 Debug( LDAP_DEBUG_ANY, "TLS: "
301 "could not load client CA list (file:`%s',dir:`%s').\n",
302 tls_opt_cacertfile ? tls_opt_cacertfile : "",
303 tls_opt_cacertdir ? tls_opt_cacertdir : "",
310 SSL_CTX_set_client_CA_list( tls_def_ctx, calist );
313 if ( tls_opt_keyfile &&
314 !SSL_CTX_use_PrivateKey_file( tls_def_ctx,
315 keyfile, SSL_FILETYPE_PEM ) )
317 Debug( LDAP_DEBUG_ANY,
318 "TLS: could not use key file `%s'.\n",
319 tls_opt_keyfile,0,0);
325 if ( tls_opt_certfile &&
326 !SSL_CTX_use_certificate_file( tls_def_ctx,
327 certfile, SSL_FILETYPE_PEM ) )
329 Debug( LDAP_DEBUG_ANY,
330 "TLS: could not use certificate `%s'.\n",
331 tls_opt_certfile,0,0);
337 if ( ( tls_opt_certfile || tls_opt_keyfile ) &&
338 !SSL_CTX_check_private_key( tls_def_ctx ) )
340 Debug( LDAP_DEBUG_ANY,
341 "TLS: private key mismatch.\n",
348 if ( tls_opt_dhfile ) {
353 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
354 Debug( LDAP_DEBUG_ANY,
355 "TLS: could not use DH parameters file `%s'.\n",
361 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
362 p = LDAP_MALLOC( sizeof(dhplist) );
364 p->keylength = DH_size( dh ) * 8;
373 if ( tls_opt_trace ) {
374 SSL_CTX_set_info_callback( tls_def_ctx, tls_info_cb );
378 if ( tls_opt_require_cert ) {
380 if ( tls_opt_require_cert == LDAP_OPT_X_TLS_DEMAND ||
381 tls_opt_require_cert == LDAP_OPT_X_TLS_HARD ) {
382 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
386 SSL_CTX_set_verify( tls_def_ctx, i,
387 tls_opt_require_cert == LDAP_OPT_X_TLS_ALLOW ?
388 tls_verify_ok : tls_verify_cb );
389 SSL_CTX_set_tmp_rsa_callback( tls_def_ctx, tls_tmp_rsa_cb );
390 if ( tls_opt_dhfile ) {
391 SSL_CTX_set_tmp_dh_callback( tls_def_ctx, tls_tmp_dh_cb );
393 #ifdef HAVE_OPENSSL_CRL
394 if ( tls_opt_crlcheck ) {
395 X509_STORE *x509_s = SSL_CTX_get_cert_store( tls_def_ctx );
396 if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
397 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
398 } else if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
399 X509_STORE_set_flags( x509_s,
400 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
406 if ( rc == -1 && tls_def_ctx != NULL ) {
407 SSL_CTX_free( tls_def_ctx );
411 LDAP_FREE( ciphersuite );
412 LDAP_FREE( cacertfile );
413 LDAP_FREE( cacertdir );
414 LDAP_FREE( certfile );
415 LDAP_FREE( keyfile );
418 #ifdef LDAP_R_COMPILE
419 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
424 static STACK_OF(X509_NAME) *
425 get_ca_list( char * bundle, char * dir )
427 STACK_OF(X509_NAME) *ca_list = NULL;
430 ca_list = SSL_load_client_CA_file( bundle );
432 #if defined(HAVE_DIRENT_H) || defined(dirent)
437 ca_list = sk_X509_NAME_new_null();
440 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
442 sk_X509_NAME_free( ca_list );
451 alloc_handle( void *ctx_arg, int is_server )
457 ctx = (SSL_CTX *) ctx_arg;
459 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
463 ssl = SSL_new( ctx );
465 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
472 update_flags( Sockbuf *sb, SSL * ssl, int rc )
474 int err = SSL_get_error(ssl, rc);
476 sb->sb_trans_needs_read = 0;
477 sb->sb_trans_needs_write = 0;
479 if (err == SSL_ERROR_WANT_READ) {
480 sb->sb_trans_needs_read = 1;
483 } else if (err == SSL_ERROR_WANT_WRITE) {
484 sb->sb_trans_needs_write = 1;
487 } else if (err == SSL_ERROR_WANT_CONNECT) {
494 * TLS support for LBER Sockbufs
499 Sockbuf_IO_Desc *sbiod;
502 static BIO_METHOD sb_tls_bio_method;
505 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
510 assert( sbiod != NULL );
512 p = LBER_MALLOC( sizeof( *p ) );
519 bio = BIO_new( &sb_tls_bio_method );
520 bio->ptr = (void *)p;
521 SSL_set_bio( p->ssl, bio, bio );
522 sbiod->sbiod_pvt = p;
527 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
531 assert( sbiod != NULL );
532 assert( sbiod->sbiod_pvt != NULL );
534 p = (struct tls_data *)sbiod->sbiod_pvt;
536 LBER_FREE( sbiod->sbiod_pvt );
537 sbiod->sbiod_pvt = NULL;
542 sb_tls_close( Sockbuf_IO_Desc *sbiod )
546 assert( sbiod != NULL );
547 assert( sbiod->sbiod_pvt != NULL );
549 p = (struct tls_data *)sbiod->sbiod_pvt;
550 SSL_shutdown( p->ssl );
555 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
559 assert( sbiod != NULL );
560 assert( sbiod->sbiod_pvt != NULL );
562 p = (struct tls_data *)sbiod->sbiod_pvt;
564 if ( opt == LBER_SB_OPT_GET_SSL ) {
565 *((SSL **)arg) = p->ssl;
568 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
569 if( SSL_pending( p->ssl ) > 0 ) {
574 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
578 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
584 assert( sbiod != NULL );
585 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
587 p = (struct tls_data *)sbiod->sbiod_pvt;
589 ret = SSL_read( p->ssl, (char *)buf, len );
591 errno = WSAGetLastError();
593 err = SSL_get_error( p->ssl, ret );
594 if (err == SSL_ERROR_WANT_READ ) {
595 sbiod->sbiod_sb->sb_trans_needs_read = 1;
596 sock_errset(EWOULDBLOCK);
599 sbiod->sbiod_sb->sb_trans_needs_read = 0;
604 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
610 assert( sbiod != NULL );
611 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
613 p = (struct tls_data *)sbiod->sbiod_pvt;
615 ret = SSL_write( p->ssl, (char *)buf, len );
617 errno = WSAGetLastError();
619 err = SSL_get_error( p->ssl, ret );
620 if (err == SSL_ERROR_WANT_WRITE ) {
621 sbiod->sbiod_sb->sb_trans_needs_write = 1;
622 sock_errset(EWOULDBLOCK);
625 sbiod->sbiod_sb->sb_trans_needs_write = 0;
630 static Sockbuf_IO sb_tls_sbio =
632 sb_tls_setup, /* sbi_setup */
633 sb_tls_remove, /* sbi_remove */
634 sb_tls_ctrl, /* sbi_ctrl */
635 sb_tls_read, /* sbi_read */
636 sb_tls_write, /* sbi_write */
637 sb_tls_close /* sbi_close */
641 sb_tls_bio_create( BIO *b ) {
650 sb_tls_bio_destroy( BIO *b )
652 if ( b == NULL ) return 0;
654 b->ptr = NULL; /* sb_tls_remove() will free it */
661 sb_tls_bio_read( BIO *b, char *buf, int len )
666 if ( buf == NULL || len <= 0 ) return 0;
668 p = (struct tls_data *)b->ptr;
670 if ( p == NULL || p->sbiod == NULL ) {
674 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
676 BIO_clear_retry_flags( b );
678 int err = sock_errno();
679 if ( err == EAGAIN || err == EWOULDBLOCK ) {
680 BIO_set_retry_read( b );
688 sb_tls_bio_write( BIO *b, const char *buf, int len )
693 if ( buf == NULL || len <= 0 ) return 0;
695 p = (struct tls_data *)b->ptr;
697 if ( p == NULL || p->sbiod == NULL ) {
701 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
703 BIO_clear_retry_flags( b );
705 int err = sock_errno();
706 if ( err == EAGAIN || err == EWOULDBLOCK ) {
707 BIO_set_retry_write( b );
715 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
717 if ( cmd == BIO_CTRL_FLUSH ) {
718 /* The OpenSSL library needs this */
725 sb_tls_bio_gets( BIO *b, char *buf, int len )
731 sb_tls_bio_puts( BIO *b, const char *str )
733 return sb_tls_bio_write( b, str, strlen( str ) );
736 static BIO_METHOD sb_tls_bio_method =
738 ( 100 | 0x400 ), /* it's a source/sink BIO */
750 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
751 * a SSL_CTX * or NULL, in which case the default ctx is used.
755 * 0 - Success. Connection is ready for communication.
756 * <0 - Error. Can't create a TLS stream.
757 * >0 - Partial success.
758 * Do a select (using information from lber_pvt_sb_needs_{read,write}
763 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
765 Sockbuf *sb = conn->lconn_sb;
769 if ( HAS_TLS( sb ) ) {
770 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
773 struct ldapoptions *lo;
776 lo = &ld->ld_options;
777 ctx = lo->ldo_tls_ctx;
779 ssl = alloc_handle( ctx, 0 );
781 if ( ssl == NULL ) return -1;
784 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
785 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
787 ber_sockbuf_add_io( sb, &sb_tls_sbio,
788 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
792 lo->ldo_tls_ctx = ctx;
794 if ( lo->ldo_tls_connect_cb )
795 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
796 lo = LDAP_INT_GLOBAL_OPT();
797 if ( lo && lo->ldo_tls_connect_cb )
798 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
801 err = SSL_connect( ssl );
804 errno = WSAGetLastError();
808 if ( update_flags( sb, ssl, err )) {
812 if ((err = ERR_peek_error())) {
815 if ( ld->ld_error ) {
816 LDAP_FREE( ld->ld_error );
818 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
820 if ( ld->ld_error ) __etoa(ld->ld_error);
824 Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
826 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
827 LBER_SBIOD_LEVEL_TRANSPORT );
829 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
830 LBER_SBIOD_LEVEL_TRANSPORT );
839 * Call this to do a TLS accept on a sockbuf.
840 * Everything else is the same as with tls_connect.
843 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
848 if ( HAS_TLS( sb ) ) {
849 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
852 ssl = alloc_handle( ctx_arg, 1 );
853 if ( ssl == NULL ) return -1;
856 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
857 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
859 ber_sockbuf_add_io( sb, &sb_tls_sbio,
860 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
863 #ifdef LDAP_R_COMPILE
864 ldap_pvt_thread_mutex_lock( &tls_connect_mutex );
866 err = SSL_accept( ssl );
867 #ifdef LDAP_R_COMPILE
868 ldap_pvt_thread_mutex_unlock( &tls_connect_mutex );
872 errno = WSAGetLastError();
875 if ( update_flags( sb, ssl, err )) return 1;
877 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
880 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
881 LBER_SBIOD_LEVEL_TRANSPORT );
883 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
884 LBER_SBIOD_LEVEL_TRANSPORT );
893 ldap_pvt_tls_inplace ( Sockbuf *sb )
895 return HAS_TLS( sb ) ? 1 : 0;
899 ldap_tls_inplace( LDAP *ld )
903 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
904 sb = ld->ld_defconn->lconn_sb;
906 } else if ( ld->ld_sb ) {
913 return ldap_pvt_tls_inplace( sb );
917 tls_get_cert( SSL *s )
919 /* If peer cert was bad, treat as if no cert was given */
920 if (SSL_get_verify_result(s)) {
921 /* If we can send an alert, do so */
922 if (SSL_version(s) != SSL2_VERSION) {
923 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
927 return SSL_get_peer_certificate(s);
931 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
932 LDAPDN_rewrite_dummy *func, unsigned flags )
938 x = tls_get_cert((SSL *)s);
940 if (!x) return LDAP_INVALID_CREDENTIALS;
942 xn = X509_get_subject_name(x);
943 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
949 ldap_pvt_tls_get_peer_hostname( void *s )
956 x = tls_get_cert((SSL *)s);
959 xn = X509_get_subject_name(x);
961 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
967 p = LDAP_STRDUP(buf);
972 /* what kind of hostname were we given? */
978 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
980 int i, ret = LDAP_LOCAL_ERROR;
986 struct in6_addr addr;
991 if( ldap_int_hostname &&
992 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
994 name = ldap_int_hostname;
999 x = tls_get_cert((SSL *)s);
1001 Debug( LDAP_DEBUG_ANY,
1002 "TLS: unable to get peer certificate.\n",
1004 /* If this was a fatal condition, things would have
1005 * aborted long before now.
1007 return LDAP_SUCCESS;
1010 #ifdef LDAP_PF_INET6
1011 if (name[0] == '[' && strchr(name, ']')) {
1012 char *n2 = ldap_strdup(name+1);
1013 *strchr(n2, ']') = 2;
1014 if (inet_pton(AF_INET6, n2, &addr))
1019 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1020 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1023 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1026 STACK_OF(GENERAL_NAME) *alt;
1028 ex = X509_get_ext(x, i);
1029 alt = X509V3_EXT_d2i(ex);
1031 int n, len1 = 0, len2 = 0;
1032 char *domain = NULL;
1035 if (ntype == IS_DNS) {
1036 len1 = strlen(name);
1037 domain = strchr(name, '.');
1039 len2 = len1 - (domain-name);
1042 n = sk_GENERAL_NAME_num(alt);
1043 for (i=0; i<n; i++) {
1046 gn = sk_GENERAL_NAME_value(alt, i);
1047 if (gn->type == GEN_DNS) {
1048 if (ntype != IS_DNS) continue;
1050 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1051 sl = ASN1_STRING_length(gn->d.ia5);
1054 if (sl == 0) continue;
1056 /* Is this an exact match? */
1057 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1061 /* Is this a wildcard match? */
1062 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1063 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1068 } else if (gn->type == GEN_IPADD) {
1069 if (ntype == IS_DNS) continue;
1071 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1072 sl = ASN1_STRING_length(gn->d.ia5);
1074 #ifdef LDAP_PF_INET6
1075 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1079 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1082 if (!memcmp(sn, &addr, sl)) {
1088 GENERAL_NAMES_free(alt);
1089 if (i < n) { /* Found a match */
1095 if (ret != LDAP_SUCCESS) {
1100 xn = X509_get_subject_name(x);
1101 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1102 buf, sizeof(buf)) == -1)
1104 Debug( LDAP_DEBUG_ANY,
1105 "TLS: unable to get common name from peer certificate.\n",
1107 ret = LDAP_CONNECT_ERROR;
1108 if ( ld->ld_error ) {
1109 LDAP_FREE( ld->ld_error );
1111 ld->ld_error = LDAP_STRDUP(
1112 _("TLS: unable to get CN from peer certificate"));
1114 } else if (strcasecmp(name, buf) == 0 ) {
1117 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1118 char *domain = strchr(name, '.');
1124 dlen = sl - (domain-name);
1127 /* Is this a wildcard match? */
1128 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1134 if( ret == LDAP_LOCAL_ERROR ) {
1135 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1136 "common name in certificate (%s).\n",
1138 ret = LDAP_CONNECT_ERROR;
1139 if ( ld->ld_error ) {
1140 LDAP_FREE( ld->ld_error );
1142 ld->ld_error = LDAP_STRDUP(
1143 _("TLS: hostname does not match CN in peer certificate"));
1151 ldap_pvt_tls_get_peer_issuer( void *s )
1153 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1158 x = SSL_get_peer_certificate((SSL *)s);
1160 if (!x) return NULL;
1162 xn = X509_get_issuer_name(x);
1163 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1172 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1177 case LDAP_OPT_X_TLS_CACERTFILE:
1178 case LDAP_OPT_X_TLS_CACERTDIR:
1179 case LDAP_OPT_X_TLS_CERTFILE:
1180 case LDAP_OPT_X_TLS_KEYFILE:
1181 case LDAP_OPT_X_TLS_RANDOM_FILE:
1182 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1183 case LDAP_OPT_X_TLS_DHFILE:
1184 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1186 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1187 case LDAP_OPT_X_TLS:
1189 if ( strcasecmp( arg, "never" ) == 0 ) {
1190 i = LDAP_OPT_X_TLS_NEVER ;
1192 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1193 i = LDAP_OPT_X_TLS_DEMAND ;
1195 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1196 i = LDAP_OPT_X_TLS_ALLOW ;
1198 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1199 i = LDAP_OPT_X_TLS_TRY ;
1201 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1202 ( strcasecmp( arg, "on" ) == 0 ) ||
1203 ( strcasecmp( arg, "yes" ) == 0) ||
1204 ( strcasecmp( arg, "true" ) == 0 ) )
1206 i = LDAP_OPT_X_TLS_HARD ;
1210 return ldap_pvt_tls_set_option( ld, option, &i );
1213 #ifdef HAVE_OPENSSL_CRL
1214 case LDAP_OPT_X_TLS_CRLCHECK:
1216 if ( strcasecmp( arg, "none" ) == 0 ) {
1217 i = LDAP_OPT_X_TLS_CRL_NONE ;
1218 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1219 i = LDAP_OPT_X_TLS_CRL_PEER ;
1220 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1221 i = LDAP_OPT_X_TLS_CRL_ALL ;
1224 return ldap_pvt_tls_set_option( ld, option, &i );
1233 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1235 struct ldapoptions *lo;
1238 assert( LDAP_VALID( ld ) );
1240 if( !LDAP_VALID( ld ) ) {
1241 return LDAP_OPT_ERROR;
1244 lo = &ld->ld_options;
1247 /* Get pointer to global option structure */
1248 lo = LDAP_INT_GLOBAL_OPT();
1250 return LDAP_NO_MEMORY;
1255 case LDAP_OPT_X_TLS:
1256 *(int *)arg = lo->ldo_tls_mode;
1258 case LDAP_OPT_X_TLS_CTX:
1260 *(void **)arg = (void *) tls_def_ctx;
1262 *(void **)arg = lo->ldo_tls_ctx;
1265 case LDAP_OPT_X_TLS_CACERTFILE:
1266 *(char **)arg = tls_opt_cacertfile ?
1267 LDAP_STRDUP( tls_opt_cacertfile ) : NULL;
1269 case LDAP_OPT_X_TLS_CACERTDIR:
1270 *(char **)arg = tls_opt_cacertdir ?
1271 LDAP_STRDUP( tls_opt_cacertdir ) : NULL;
1273 case LDAP_OPT_X_TLS_CERTFILE:
1274 *(char **)arg = tls_opt_certfile ?
1275 LDAP_STRDUP( tls_opt_certfile ) : NULL;
1277 case LDAP_OPT_X_TLS_KEYFILE:
1278 *(char **)arg = tls_opt_keyfile ?
1279 LDAP_STRDUP( tls_opt_keyfile ) : NULL;
1281 case LDAP_OPT_X_TLS_DHFILE:
1282 *(char **)arg = tls_opt_dhfile ?
1283 LDAP_STRDUP( tls_opt_dhfile ) : NULL;
1285 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1286 *(int *)arg = tls_opt_require_cert;
1288 #ifdef HAVE_OPENSSL_CRL
1289 case LDAP_OPT_X_TLS_CRLCHECK:
1290 *(int *)arg = tls_opt_crlcheck;
1293 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1294 *(char **)arg = tls_opt_ciphersuite ?
1295 LDAP_STRDUP( tls_opt_ciphersuite ) : NULL;
1297 case LDAP_OPT_X_TLS_RANDOM_FILE:
1298 *(char **)arg = tls_opt_randfile ?
1299 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1301 case LDAP_OPT_X_TLS_SSL_CTX: {
1304 LDAPConn *conn = ld->ld_defconn;
1305 if ( conn != NULL ) {
1306 Sockbuf *sb = conn->lconn_sb;
1307 retval = ldap_pvt_tls_sb_ctx( sb );
1310 *(void **)arg = retval;
1313 case LDAP_OPT_X_TLS_CONNECT_CB:
1314 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1316 case LDAP_OPT_X_TLS_CONNECT_ARG:
1317 *(void **)arg = lo->ldo_tls_connect_arg;
1326 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1328 struct ldapoptions *lo;
1331 assert( LDAP_VALID( ld ) );
1333 if( !LDAP_VALID( ld ) ) {
1334 return LDAP_OPT_ERROR;
1337 lo = &ld->ld_options;
1340 /* Get pointer to global option structure */
1341 lo = LDAP_INT_GLOBAL_OPT();
1343 return LDAP_NO_MEMORY;
1348 case LDAP_OPT_X_TLS:
1349 switch( *(int *) arg ) {
1350 case LDAP_OPT_X_TLS_NEVER:
1351 case LDAP_OPT_X_TLS_DEMAND:
1352 case LDAP_OPT_X_TLS_ALLOW:
1353 case LDAP_OPT_X_TLS_TRY:
1354 case LDAP_OPT_X_TLS_HARD:
1356 lo->ldo_tls_mode = *(int *)arg;
1363 case LDAP_OPT_X_TLS_CTX:
1365 tls_def_ctx = (SSL_CTX *) arg;
1368 lo->ldo_tls_ctx = arg;
1371 case LDAP_OPT_X_TLS_CONNECT_CB:
1372 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1374 case LDAP_OPT_X_TLS_CONNECT_ARG:
1375 lo->ldo_tls_connect_arg = arg;
1384 case LDAP_OPT_X_TLS_CACERTFILE:
1385 if ( tls_opt_cacertfile ) LDAP_FREE( tls_opt_cacertfile );
1386 tls_opt_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1388 case LDAP_OPT_X_TLS_CACERTDIR:
1389 if ( tls_opt_cacertdir ) LDAP_FREE( tls_opt_cacertdir );
1390 tls_opt_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1392 case LDAP_OPT_X_TLS_CERTFILE:
1393 if ( tls_opt_certfile ) LDAP_FREE( tls_opt_certfile );
1394 tls_opt_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1396 case LDAP_OPT_X_TLS_KEYFILE:
1397 if ( tls_opt_keyfile ) LDAP_FREE( tls_opt_keyfile );
1398 tls_opt_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1400 case LDAP_OPT_X_TLS_DHFILE:
1401 if ( tls_opt_dhfile ) LDAP_FREE( tls_opt_dhfile );
1402 tls_opt_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1404 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1405 switch( *(int *) arg ) {
1406 case LDAP_OPT_X_TLS_NEVER:
1407 case LDAP_OPT_X_TLS_DEMAND:
1408 case LDAP_OPT_X_TLS_ALLOW:
1409 case LDAP_OPT_X_TLS_TRY:
1410 case LDAP_OPT_X_TLS_HARD:
1411 tls_opt_require_cert = * (int *) arg;
1415 #ifdef HAVE_OPENSSL_CRL
1416 case LDAP_OPT_X_TLS_CRLCHECK:
1417 switch( *(int *) arg ) {
1418 case LDAP_OPT_X_TLS_CRL_NONE:
1419 case LDAP_OPT_X_TLS_CRL_PEER:
1420 case LDAP_OPT_X_TLS_CRL_ALL:
1421 tls_opt_crlcheck = * (int *) arg;
1426 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1427 if ( tls_opt_ciphersuite ) LDAP_FREE( tls_opt_ciphersuite );
1428 tls_opt_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1430 case LDAP_OPT_X_TLS_RANDOM_FILE:
1431 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1432 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1441 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1443 Sockbuf *sb = conn->lconn_sb;
1448 host = srv->lud_host;
1450 host = conn->lconn_server->lud_host;
1453 /* avoid NULL host */
1454 if( host == NULL ) {
1458 (void) ldap_pvt_tls_init();
1461 * Fortunately, the lib uses blocking io...
1463 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1464 ld->ld_errno = LDAP_CONNECT_ERROR;
1465 return (ld->ld_errno);
1468 ssl = ldap_pvt_tls_sb_ctx( sb );
1469 assert( ssl != NULL );
1472 * compare host with name(s) in certificate
1474 if (tls_opt_require_cert != LDAP_OPT_X_TLS_NEVER) {
1475 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1476 if (ld->ld_errno != LDAP_SUCCESS) {
1477 return ld->ld_errno;
1481 return LDAP_SUCCESS;
1484 /* Derived from openssl/apps/s_cb.c */
1486 tls_info_cb( const SSL *ssl, int where, int ret )
1490 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1492 w = where & ~SSL_ST_MASK;
1493 if ( w & SSL_ST_CONNECT ) {
1495 } else if ( w & SSL_ST_ACCEPT ) {
1503 state = LDAP_STRDUP( state );
1507 if ( where & SSL_CB_LOOP ) {
1508 Debug( LDAP_DEBUG_TRACE,
1509 "TLS trace: %s:%s\n",
1512 } else if ( where & SSL_CB_ALERT ) {
1513 char *atype = (char *) SSL_alert_type_string_long( ret );
1514 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1515 op = ( where & SSL_CB_READ ) ? "read" : "write";
1518 atype = LDAP_STRDUP( atype );
1522 adesc = LDAP_STRDUP( adesc );
1526 Debug( LDAP_DEBUG_TRACE,
1527 "TLS trace: SSL3 alert %s:%s:%s\n",
1530 if ( atype ) LDAP_FREE( atype );
1531 if ( adesc ) LDAP_FREE( adesc );
1533 } else if ( where & SSL_CB_EXIT ) {
1535 Debug( LDAP_DEBUG_TRACE,
1536 "TLS trace: %s:failed in %s\n",
1538 } else if ( ret < 0 ) {
1539 Debug( LDAP_DEBUG_TRACE,
1540 "TLS trace: %s:error in %s\n",
1545 if ( state ) LDAP_FREE( state );
1550 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1559 char *certerr = NULL;
1561 cert = X509_STORE_CTX_get_current_cert( ctx );
1562 errnum = X509_STORE_CTX_get_error( ctx );
1563 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1566 * X509_get_*_name return pointers to the internal copies of
1567 * those things requested. So do not free them.
1569 subject = X509_get_subject_name( cert );
1570 issuer = X509_get_issuer_name( cert );
1571 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1572 sname = X509_NAME_oneline( subject, NULL, 0 );
1573 iname = X509_NAME_oneline( issuer, NULL, 0 );
1574 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1576 if ( sname ) __etoa( sname );
1577 if ( iname ) __etoa( iname );
1579 certerr = LDAP_STRDUP( certerr );
1583 Debug( LDAP_DEBUG_TRACE,
1584 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1586 sname ? sname : "-unknown-" );
1587 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1589 Debug( LDAP_DEBUG_ANY,
1590 "TLS certificate verification: Error, %s\n",
1594 CRYPTO_free ( sname );
1596 CRYPTO_free ( iname );
1598 if ( certerr ) LDAP_FREE( certerr );
1604 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1606 (void) tls_verify_cb( ok, ctx );
1610 /* Inspired by ERR_print_errors in OpenSSL */
1612 tls_report_error( void )
1619 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1620 ERR_error_string_n( l, buf, sizeof( buf ) );
1623 file = LDAP_STRDUP( file );
1624 __etoa( (char *)file );
1628 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1631 if ( file ) LDAP_FREE( (void *)file );
1637 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1641 /* FIXME: Pregenerate the key on startup */
1642 /* FIXME: Who frees the key? */
1643 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1646 Debug( LDAP_DEBUG_ANY,
1647 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1648 key_length, is_export ? "export" : "domestic", 0 );
1655 tls_seed_PRNG( const char *randfile )
1657 #ifndef URANDOM_DEVICE
1658 /* no /dev/urandom (or equiv) */
1660 char buffer[MAXPATHLEN];
1662 if (randfile == NULL) {
1663 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1664 * If $HOME is not set or buffer too small to hold the pathname,
1665 * an error occurs. - From RAND_file_name() man page.
1666 * The fact is that when $HOME is NULL, .rnd is used.
1668 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1670 } else if (RAND_egd(randfile) > 0) {
1675 if (randfile == NULL) {
1676 Debug( LDAP_DEBUG_ANY,
1677 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1682 total = RAND_load_file(randfile, -1);
1684 if (RAND_status() == 0) {
1685 Debug( LDAP_DEBUG_ANY,
1686 "TLS: PRNG not been seeded with enough data\n",
1691 /* assume if there was enough bits to seed that it's okay
1692 * to write derived bits to the file
1694 RAND_write_file(randfile);
1708 /* From the OpenSSL 0.9.7 distro */
1709 static const char dhpem512[] =
1710 "-----BEGIN DH PARAMETERS-----\n\
1711 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1712 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1713 -----END DH PARAMETERS-----\n";
1715 static const char dhpem1024[] =
1716 "-----BEGIN DH PARAMETERS-----\n\
1717 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1718 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1719 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1720 -----END DH PARAMETERS-----\n";
1722 static const char dhpem2048[] =
1723 "-----BEGIN DH PARAMETERS-----\n\
1724 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1725 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1726 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1727 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1728 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1729 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1730 -----END DH PARAMETERS-----\n";
1732 static const char dhpem4096[] =
1733 "-----BEGIN DH PARAMETERS-----\n\
1734 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1735 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1736 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1737 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1738 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1739 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1740 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1741 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1742 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1743 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1744 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1745 -----END DH PARAMETERS-----\n";
1747 static const struct dhinfo dhpem[] = {
1748 { 512, dhpem512, sizeof(dhpem512) },
1749 { 1024, dhpem1024, sizeof(dhpem1024) },
1750 { 2048, dhpem2048, sizeof(dhpem2048) },
1751 { 4096, dhpem4096, sizeof(dhpem4096) },
1756 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1758 struct dhplist *p = NULL;
1763 /* Do we have params of this length already? */
1764 #ifdef LDAP_R_COMPILE
1765 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1767 for ( p = dhparams; p; p=p->next ) {
1768 if ( p->keylength == key_length ) {
1769 #ifdef LDAP_R_COMPILE
1770 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1776 /* No - check for hardcoded params */
1778 for (i=0; dhpem[i].keylength; i++) {
1779 if ( dhpem[i].keylength == key_length ) {
1780 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1786 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1790 /* Generating on the fly is expensive/slow... */
1792 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1795 p = LDAP_MALLOC( sizeof(struct dhplist) );
1797 p->keylength = key_length;
1804 #ifdef LDAP_R_COMPILE
1805 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1812 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1817 if (HAS_TLS( sb )) {
1818 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1827 ldap_pvt_tls_get_strength( void *s )
1832 c = SSL_get_current_cipher((SSL *)s);
1833 return SSL_CIPHER_get_bits(c, NULL);
1841 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1848 x = SSL_get_certificate((SSL *)s);
1850 if (!x) return LDAP_INVALID_CREDENTIALS;
1852 xn = X509_get_subject_name(x);
1853 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1856 return LDAP_NOT_SUPPORTED;
1861 ldap_start_tls( LDAP *ld,
1862 LDAPControl **serverctrls,
1863 LDAPControl **clientctrls,
1866 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1867 NULL, serverctrls, clientctrls, msgidp );
1871 ldap_install_tls( LDAP *ld )
1874 return LDAP_NOT_SUPPORTED;
1876 if ( ldap_tls_inplace( ld ) ) {
1877 return LDAP_LOCAL_ERROR;
1880 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1885 ldap_start_tls_s ( LDAP *ld,
1886 LDAPControl **serverctrls,
1887 LDAPControl **clientctrls )
1890 return LDAP_NOT_SUPPORTED;
1893 char *rspoid = NULL;
1894 struct berval *rspdata = NULL;
1896 /* XXYYZ: this initiates operation only on default connection! */
1898 if ( ldap_tls_inplace( ld ) ) {
1899 return LDAP_LOCAL_ERROR;
1902 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1903 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1905 if ( rspoid != NULL ) {
1909 if ( rspdata != NULL ) {
1910 ber_bvfree( rspdata );
1913 if ( rc == LDAP_SUCCESS ) {
1914 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );