1 /* tls.c - Handle tls/ssl using SSLeay or OpenSSL. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2006 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_randfile = NULL;
53 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
54 (void *)&sb_tls_sbio )
56 static void tls_report_error( void );
58 static void tls_info_cb( const SSL *ssl, int where, int ret );
59 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
60 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
61 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
62 static STACK_OF(X509_NAME) * get_ca_list( char * bundle, char * dir );
64 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
66 typedef struct dhplist {
72 static dhplist *dhparams;
74 static int tls_seed_PRNG( const char *randfile );
78 * provide mutexes for the SSLeay library.
80 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
82 static void tls_locking_cb( int mode, int type, const char *file, int line )
84 if ( mode & CRYPTO_LOCK ) {
85 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
87 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
92 * an extra mutex for the default ctx.
95 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
96 static ldap_pvt_thread_mutex_t tls_connect_mutex;
98 static void tls_init_threads( void )
102 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
103 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
105 CRYPTO_set_locking_callback( tls_locking_cb );
106 /* FIXME: the thread id should be added somehow... */
108 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
109 ldap_pvt_thread_mutex_init( &tls_connect_mutex );
111 #endif /* LDAP_R_COMPILE */
114 ldap_int_tls_destroy( struct ldapoptions *lo )
116 if ( lo->ldo_tls_ctx ) {
117 SSL_CTX_free( lo->ldo_tls_ctx );
118 lo->ldo_tls_ctx = NULL;
121 if ( lo->ldo_tls_certfile ) {
122 LDAP_FREE( lo->ldo_tls_certfile );
123 lo->ldo_tls_certfile = NULL;
125 if ( lo->ldo_tls_keyfile ) {
126 LDAP_FREE( lo->ldo_tls_keyfile );
127 lo->ldo_tls_keyfile = NULL;
129 if ( lo->ldo_tls_dhfile ) {
130 LDAP_FREE( lo->ldo_tls_dhfile );
131 lo->ldo_tls_dhfile = NULL;
133 if ( lo->ldo_tls_cacertfile ) {
134 LDAP_FREE( lo->ldo_tls_cacertfile );
135 lo->ldo_tls_cacertfile = NULL;
137 if ( lo->ldo_tls_cacertdir ) {
138 LDAP_FREE( lo->ldo_tls_cacertdir );
139 lo->ldo_tls_cacertdir = NULL;
141 if ( lo->ldo_tls_ciphersuite ) {
142 LDAP_FREE( lo->ldo_tls_ciphersuite );
143 lo->ldo_tls_ciphersuite = NULL;
148 * Tear down the TLS subsystem. Should only be called once.
151 ldap_pvt_tls_destroy( void )
153 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
155 ldap_int_tls_destroy( lo );
161 if ( tls_opt_randfile ) {
162 LDAP_FREE( tls_opt_randfile );
163 tls_opt_randfile = NULL;
168 * Initialize TLS subsystem. Should be called only once.
171 ldap_pvt_tls_init( void )
173 static int tls_initialized = 0;
175 if ( tls_initialized++ ) return 0;
179 char *file = LDAP_STRDUP( tls_opt_randfile );
180 if ( file ) __atoe( file );
181 (void) tls_seed_PRNG( file );
185 (void) tls_seed_PRNG( tls_opt_randfile );
188 #ifdef LDAP_R_COMPILE
192 SSL_load_error_strings();
193 SSLeay_add_ssl_algorithms();
195 /* FIXME: mod_ssl does this */
196 X509V3_add_standard_extensions();
201 * initialize a new TLS context
204 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
206 STACK_OF(X509_NAME) *calist;
208 char *ciphersuite = lo->ldo_tls_ciphersuite;
209 char *cacertfile = lo->ldo_tls_cacertfile;
210 char *cacertdir = lo->ldo_tls_cacertdir;
211 char *certfile = lo->ldo_tls_certfile;
212 char *keyfile = lo->ldo_tls_keyfile;
213 char *dhfile = lo->ldo_tls_dhfile;
215 if ( lo->ldo_tls_ctx )
218 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
219 /* minimum configuration not provided */
220 return LDAP_NOT_SUPPORTED;
224 /* This ASCII/EBCDIC handling is a real pain! */
226 ciphersuite = LDAP_STRDUP( ciphersuite );
227 __atoe( ciphersuite );
230 cacertfile = LDAP_STRDUP( cacertfile );
231 __atoe( cacertfile );
234 cacertdir = LDAP_STRDUP( cacertdir );
238 certfile = LDAP_STRDUP( certfile );
242 keyfile = LDAP_STRDUP( keyfile );
246 dhfile = LDAP_STRDUP( dhfile );
250 lo->ldo_tls_ctx = SSL_CTX_new( SSLv23_method() );
251 if ( lo->ldo_tls_ctx == NULL ) {
252 Debug( LDAP_DEBUG_ANY,
253 "TLS: could not allocate default ctx (%lu).\n",
254 ERR_peek_error(),0,0);
260 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
261 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
264 if ( lo->ldo_tls_ciphersuite &&
265 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
267 Debug( LDAP_DEBUG_ANY,
268 "TLS: could not set cipher list %s.\n",
269 lo->ldo_tls_ciphersuite, 0, 0 );
275 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
276 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
277 cacertfile, cacertdir ) ||
278 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
280 Debug( LDAP_DEBUG_ANY, "TLS: "
281 "could not load verify locations (file:`%s',dir:`%s').\n",
282 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
283 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
291 /* List of CA names to send to a client */
292 calist = get_ca_list( cacertfile, cacertdir );
294 Debug( LDAP_DEBUG_ANY, "TLS: "
295 "could not load client CA list (file:`%s',dir:`%s').\n",
296 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
297 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
304 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
308 if ( lo->ldo_tls_certfile &&
309 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
310 certfile, SSL_FILETYPE_PEM ) )
312 Debug( LDAP_DEBUG_ANY,
313 "TLS: could not use certificate `%s'.\n",
314 lo->ldo_tls_certfile,0,0);
320 /* Key validity is checked automatically if cert has already been set */
321 if ( lo->ldo_tls_keyfile &&
322 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
323 keyfile, SSL_FILETYPE_PEM ) )
325 Debug( LDAP_DEBUG_ANY,
326 "TLS: could not use key file `%s'.\n",
327 lo->ldo_tls_keyfile,0,0);
333 if ( lo->ldo_tls_dhfile ) {
338 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
339 Debug( LDAP_DEBUG_ANY,
340 "TLS: could not use DH parameters file `%s'.\n",
341 lo->ldo_tls_dhfile,0,0);
346 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
347 p = LDAP_MALLOC( sizeof(dhplist) );
349 p->keylength = DH_size( dh ) * 8;
358 if ( tls_opt_trace ) {
359 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
363 if ( lo->ldo_tls_require_cert ) {
365 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
366 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
367 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
371 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
372 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
373 tls_verify_ok : tls_verify_cb );
374 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
375 if ( lo->ldo_tls_dhfile ) {
376 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
378 #ifdef HAVE_OPENSSL_CRL
379 if ( lo->ldo_tls_crlcheck ) {
380 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
381 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
382 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
383 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
384 X509_STORE_set_flags( x509_s,
385 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
391 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
392 SSL_CTX_free( lo->ldo_tls_ctx );
393 lo->ldo_tls_ctx = NULL;
396 LDAP_FREE( ciphersuite );
397 LDAP_FREE( cacertfile );
398 LDAP_FREE( cacertdir );
399 LDAP_FREE( certfile );
400 LDAP_FREE( keyfile );
407 * initialize the default context
410 ldap_pvt_tls_init_def_ctx( int is_server )
412 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
414 #ifdef LDAP_R_COMPILE
415 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
417 rc = ldap_int_tls_init_ctx( lo, is_server );
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 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
460 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
461 ctx = lo->ldo_tls_ctx;
464 ssl = SSL_new( ctx );
466 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
473 update_flags( Sockbuf *sb, SSL * ssl, int rc )
475 int err = SSL_get_error(ssl, rc);
477 sb->sb_trans_needs_read = 0;
478 sb->sb_trans_needs_write = 0;
480 if (err == SSL_ERROR_WANT_READ) {
481 sb->sb_trans_needs_read = 1;
484 } else if (err == SSL_ERROR_WANT_WRITE) {
485 sb->sb_trans_needs_write = 1;
488 } else if (err == SSL_ERROR_WANT_CONNECT) {
495 * TLS support for LBER Sockbufs
500 Sockbuf_IO_Desc *sbiod;
503 static BIO_METHOD sb_tls_bio_method;
506 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
511 assert( sbiod != NULL );
513 p = LBER_MALLOC( sizeof( *p ) );
520 bio = BIO_new( &sb_tls_bio_method );
521 bio->ptr = (void *)p;
522 SSL_set_bio( p->ssl, bio, bio );
523 sbiod->sbiod_pvt = p;
528 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
532 assert( sbiod != NULL );
533 assert( sbiod->sbiod_pvt != NULL );
535 p = (struct tls_data *)sbiod->sbiod_pvt;
537 LBER_FREE( sbiod->sbiod_pvt );
538 sbiod->sbiod_pvt = NULL;
543 sb_tls_close( Sockbuf_IO_Desc *sbiod )
547 assert( sbiod != NULL );
548 assert( sbiod->sbiod_pvt != NULL );
550 p = (struct tls_data *)sbiod->sbiod_pvt;
551 SSL_shutdown( p->ssl );
556 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
560 assert( sbiod != NULL );
561 assert( sbiod->sbiod_pvt != NULL );
563 p = (struct tls_data *)sbiod->sbiod_pvt;
565 if ( opt == LBER_SB_OPT_GET_SSL ) {
566 *((SSL **)arg) = p->ssl;
569 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
570 if( SSL_pending( p->ssl ) > 0 ) {
575 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
579 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
585 assert( sbiod != NULL );
586 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
588 p = (struct tls_data *)sbiod->sbiod_pvt;
590 ret = SSL_read( p->ssl, (char *)buf, len );
592 errno = WSAGetLastError();
594 err = SSL_get_error( p->ssl, ret );
595 if (err == SSL_ERROR_WANT_READ ) {
596 sbiod->sbiod_sb->sb_trans_needs_read = 1;
600 sbiod->sbiod_sb->sb_trans_needs_read = 0;
605 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
611 assert( sbiod != NULL );
612 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
614 p = (struct tls_data *)sbiod->sbiod_pvt;
616 ret = SSL_write( p->ssl, (char *)buf, len );
618 errno = WSAGetLastError();
620 err = SSL_get_error( p->ssl, ret );
621 if (err == SSL_ERROR_WANT_WRITE ) {
622 sbiod->sbiod_sb->sb_trans_needs_write = 1;
626 sbiod->sbiod_sb->sb_trans_needs_write = 0;
631 static Sockbuf_IO sb_tls_sbio =
633 sb_tls_setup, /* sbi_setup */
634 sb_tls_remove, /* sbi_remove */
635 sb_tls_ctrl, /* sbi_ctrl */
636 sb_tls_read, /* sbi_read */
637 sb_tls_write, /* sbi_write */
638 sb_tls_close /* sbi_close */
642 sb_tls_bio_create( BIO *b ) {
651 sb_tls_bio_destroy( BIO *b )
653 if ( b == NULL ) return 0;
655 b->ptr = NULL; /* sb_tls_remove() will free it */
662 sb_tls_bio_read( BIO *b, char *buf, int len )
667 if ( buf == NULL || len <= 0 ) return 0;
669 p = (struct tls_data *)b->ptr;
671 if ( p == NULL || p->sbiod == NULL ) {
675 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
677 BIO_clear_retry_flags( b );
680 if ( err == EAGAIN || err == EWOULDBLOCK ) {
681 BIO_set_retry_read( b );
689 sb_tls_bio_write( BIO *b, const char *buf, int len )
694 if ( buf == NULL || len <= 0 ) return 0;
696 p = (struct tls_data *)b->ptr;
698 if ( p == NULL || p->sbiod == NULL ) {
702 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
704 BIO_clear_retry_flags( b );
707 if ( err == EAGAIN || err == EWOULDBLOCK ) {
708 BIO_set_retry_write( b );
716 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
718 if ( cmd == BIO_CTRL_FLUSH ) {
719 /* The OpenSSL library needs this */
726 sb_tls_bio_gets( BIO *b, char *buf, int len )
732 sb_tls_bio_puts( BIO *b, const char *str )
734 return sb_tls_bio_write( b, str, strlen( str ) );
737 static BIO_METHOD sb_tls_bio_method =
739 ( 100 | 0x400 ), /* it's a source/sink BIO */
751 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
752 * a SSL_CTX * or NULL, in which case the default ctx is used.
756 * 0 - Success. Connection is ready for communication.
757 * <0 - Error. Can't create a TLS stream.
758 * >0 - Partial success.
759 * Do a select (using information from lber_pvt_sb_needs_{read,write}
764 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
766 Sockbuf *sb = conn->lconn_sb;
770 if ( HAS_TLS( sb ) ) {
771 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
774 struct ldapoptions *lo;
777 ctx = ld->ld_options.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 );
790 lo = LDAP_INT_GLOBAL_OPT();
792 ctx = lo->ldo_tls_ctx;
793 ld->ld_options.ldo_tls_ctx = ctx;
794 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
796 if ( ld->ld_options.ldo_tls_connect_cb )
797 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
798 ld->ld_options.ldo_tls_connect_arg );
799 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
800 ld->ld_options.ldo_tls_connect_cb )
801 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
804 err = SSL_connect( ssl );
807 errno = WSAGetLastError();
811 if ( update_flags( sb, ssl, err )) {
815 if ((err = ERR_peek_error())) {
818 if ( ld->ld_error ) {
819 LDAP_FREE( ld->ld_error );
821 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
823 if ( ld->ld_error ) __etoa(ld->ld_error);
827 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
828 ld->ld_error ? ld->ld_error : "" ,0,0);
830 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
831 LBER_SBIOD_LEVEL_TRANSPORT );
833 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
834 LBER_SBIOD_LEVEL_TRANSPORT );
843 * Call this to do a TLS accept on a sockbuf.
844 * Everything else is the same as with tls_connect.
847 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
852 if ( HAS_TLS( sb ) ) {
853 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
856 ssl = alloc_handle( ctx_arg, 1 );
857 if ( ssl == NULL ) return -1;
860 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
861 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
863 ber_sockbuf_add_io( sb, &sb_tls_sbio,
864 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
867 #ifdef LDAP_R_COMPILE
868 ldap_pvt_thread_mutex_lock( &tls_connect_mutex );
870 err = SSL_accept( ssl );
871 #ifdef LDAP_R_COMPILE
872 ldap_pvt_thread_mutex_unlock( &tls_connect_mutex );
876 errno = WSAGetLastError();
879 if ( update_flags( sb, ssl, err )) return 1;
881 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
884 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
885 LBER_SBIOD_LEVEL_TRANSPORT );
887 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
888 LBER_SBIOD_LEVEL_TRANSPORT );
897 ldap_pvt_tls_inplace ( Sockbuf *sb )
899 return HAS_TLS( sb ) ? 1 : 0;
903 ldap_tls_inplace( LDAP *ld )
907 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
908 sb = ld->ld_defconn->lconn_sb;
910 } else if ( ld->ld_sb ) {
917 return ldap_pvt_tls_inplace( sb );
921 tls_get_cert( SSL *s )
923 /* If peer cert was bad, treat as if no cert was given */
924 if (SSL_get_verify_result(s)) {
925 /* If we can send an alert, do so */
926 if (SSL_version(s) != SSL2_VERSION) {
927 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
931 return SSL_get_peer_certificate(s);
935 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
936 LDAPDN_rewrite_dummy *func, unsigned flags )
942 x = tls_get_cert((SSL *)s);
944 if (!x) return LDAP_INVALID_CREDENTIALS;
946 xn = X509_get_subject_name(x);
947 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
953 ldap_pvt_tls_get_peer_hostname( void *s )
960 x = tls_get_cert((SSL *)s);
963 xn = X509_get_subject_name(x);
965 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
971 p = LDAP_STRDUP(buf);
976 /* what kind of hostname were we given? */
982 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
984 int i, ret = LDAP_LOCAL_ERROR;
990 struct in6_addr addr;
995 if( ldap_int_hostname &&
996 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
998 name = ldap_int_hostname;
1003 x = tls_get_cert((SSL *)s);
1005 Debug( LDAP_DEBUG_ANY,
1006 "TLS: unable to get peer certificate.\n",
1008 /* If this was a fatal condition, things would have
1009 * aborted long before now.
1011 return LDAP_SUCCESS;
1014 #ifdef LDAP_PF_INET6
1015 if (name[0] == '[' && strchr(name, ']')) {
1016 char *n2 = ldap_strdup(name+1);
1017 *strchr(n2, ']') = 2;
1018 if (inet_pton(AF_INET6, n2, &addr))
1023 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1024 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1027 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1030 STACK_OF(GENERAL_NAME) *alt;
1032 ex = X509_get_ext(x, i);
1033 alt = X509V3_EXT_d2i(ex);
1035 int n, len1 = 0, len2 = 0;
1036 char *domain = NULL;
1039 if (ntype == IS_DNS) {
1040 len1 = strlen(name);
1041 domain = strchr(name, '.');
1043 len2 = len1 - (domain-name);
1046 n = sk_GENERAL_NAME_num(alt);
1047 for (i=0; i<n; i++) {
1050 gn = sk_GENERAL_NAME_value(alt, i);
1051 if (gn->type == GEN_DNS) {
1052 if (ntype != IS_DNS) continue;
1054 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1055 sl = ASN1_STRING_length(gn->d.ia5);
1058 if (sl == 0) continue;
1060 /* Is this an exact match? */
1061 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1065 /* Is this a wildcard match? */
1066 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1067 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1072 } else if (gn->type == GEN_IPADD) {
1073 if (ntype == IS_DNS) continue;
1075 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1076 sl = ASN1_STRING_length(gn->d.ia5);
1078 #ifdef LDAP_PF_INET6
1079 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1083 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1086 if (!memcmp(sn, &addr, sl)) {
1092 GENERAL_NAMES_free(alt);
1093 if (i < n) { /* Found a match */
1099 if (ret != LDAP_SUCCESS) {
1104 xn = X509_get_subject_name(x);
1105 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1106 buf, sizeof(buf)) == -1)
1108 Debug( LDAP_DEBUG_ANY,
1109 "TLS: unable to get common name from peer certificate.\n",
1111 ret = LDAP_CONNECT_ERROR;
1112 if ( ld->ld_error ) {
1113 LDAP_FREE( ld->ld_error );
1115 ld->ld_error = LDAP_STRDUP(
1116 _("TLS: unable to get CN from peer certificate"));
1118 } else if (strcasecmp(name, buf) == 0 ) {
1121 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1122 char *domain = strchr(name, '.');
1128 dlen = sl - (domain-name);
1131 /* Is this a wildcard match? */
1132 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1138 if( ret == LDAP_LOCAL_ERROR ) {
1139 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1140 "common name in certificate (%s).\n",
1142 ret = LDAP_CONNECT_ERROR;
1143 if ( ld->ld_error ) {
1144 LDAP_FREE( ld->ld_error );
1146 ld->ld_error = LDAP_STRDUP(
1147 _("TLS: hostname does not match CN in peer certificate"));
1155 ldap_pvt_tls_get_peer_issuer( void *s )
1157 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1162 x = SSL_get_peer_certificate((SSL *)s);
1164 if (!x) return NULL;
1166 xn = X509_get_issuer_name(x);
1167 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1176 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1181 case LDAP_OPT_X_TLS_CACERTFILE:
1182 case LDAP_OPT_X_TLS_CACERTDIR:
1183 case LDAP_OPT_X_TLS_CERTFILE:
1184 case LDAP_OPT_X_TLS_KEYFILE:
1185 case LDAP_OPT_X_TLS_RANDOM_FILE:
1186 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1187 case LDAP_OPT_X_TLS_DHFILE:
1188 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1190 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1191 case LDAP_OPT_X_TLS:
1193 if ( strcasecmp( arg, "never" ) == 0 ) {
1194 i = LDAP_OPT_X_TLS_NEVER ;
1196 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1197 i = LDAP_OPT_X_TLS_DEMAND ;
1199 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1200 i = LDAP_OPT_X_TLS_ALLOW ;
1202 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1203 i = LDAP_OPT_X_TLS_TRY ;
1205 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1206 ( strcasecmp( arg, "on" ) == 0 ) ||
1207 ( strcasecmp( arg, "yes" ) == 0) ||
1208 ( strcasecmp( arg, "true" ) == 0 ) )
1210 i = LDAP_OPT_X_TLS_HARD ;
1214 return ldap_pvt_tls_set_option( ld, option, &i );
1217 #ifdef HAVE_OPENSSL_CRL
1218 case LDAP_OPT_X_TLS_CRLCHECK:
1220 if ( strcasecmp( arg, "none" ) == 0 ) {
1221 i = LDAP_OPT_X_TLS_CRL_NONE ;
1222 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1223 i = LDAP_OPT_X_TLS_CRL_PEER ;
1224 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1225 i = LDAP_OPT_X_TLS_CRL_ALL ;
1228 return ldap_pvt_tls_set_option( ld, option, &i );
1237 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1239 struct ldapoptions *lo;
1242 assert( LDAP_VALID( ld ) );
1244 if( !LDAP_VALID( ld ) ) {
1245 return LDAP_OPT_ERROR;
1248 lo = &ld->ld_options;
1251 /* Get pointer to global option structure */
1252 lo = LDAP_INT_GLOBAL_OPT();
1254 return LDAP_NO_MEMORY;
1259 case LDAP_OPT_X_TLS:
1260 *(int *)arg = lo->ldo_tls_mode;
1262 case LDAP_OPT_X_TLS_CTX:
1263 *(void **)arg = lo->ldo_tls_ctx;
1264 if ( lo->ldo_tls_ctx ) {
1265 SSL_CTX *ctx = lo->ldo_tls_ctx;
1266 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
1269 case LDAP_OPT_X_TLS_CACERTFILE:
1270 *(char **)arg = lo->ldo_tls_cacertfile ?
1271 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
1273 case LDAP_OPT_X_TLS_CACERTDIR:
1274 *(char **)arg = lo->ldo_tls_cacertdir ?
1275 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
1277 case LDAP_OPT_X_TLS_CERTFILE:
1278 *(char **)arg = lo->ldo_tls_certfile ?
1279 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
1281 case LDAP_OPT_X_TLS_KEYFILE:
1282 *(char **)arg = lo->ldo_tls_keyfile ?
1283 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
1285 case LDAP_OPT_X_TLS_DHFILE:
1286 *(char **)arg = lo->ldo_tls_dhfile ?
1287 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
1289 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1290 *(int *)arg = lo->ldo_tls_require_cert;
1292 #ifdef HAVE_OPENSSL_CRL
1293 case LDAP_OPT_X_TLS_CRLCHECK:
1294 *(int *)arg = lo->ldo_tls_crlcheck;
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 if ( !arg ) return -1;
1351 switch( *(int *) arg ) {
1352 case LDAP_OPT_X_TLS_NEVER:
1353 case LDAP_OPT_X_TLS_DEMAND:
1354 case LDAP_OPT_X_TLS_ALLOW:
1355 case LDAP_OPT_X_TLS_TRY:
1356 case LDAP_OPT_X_TLS_HARD:
1358 lo->ldo_tls_mode = *(int *)arg;
1365 case LDAP_OPT_X_TLS_CTX:
1366 if ( lo->ldo_tls_ctx )
1367 SSL_CTX_free( lo->ldo_tls_ctx );
1368 lo->ldo_tls_ctx = arg;
1369 CRYPTO_add( &((SSL_CTX *)arg)->references, 1, CRYPTO_LOCK_SSL_CTX );
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;
1377 case LDAP_OPT_X_TLS_CACERTFILE:
1378 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
1379 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1381 case LDAP_OPT_X_TLS_CACERTDIR:
1382 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
1383 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1385 case LDAP_OPT_X_TLS_CERTFILE:
1386 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
1387 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1389 case LDAP_OPT_X_TLS_KEYFILE:
1390 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
1391 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1393 case LDAP_OPT_X_TLS_DHFILE:
1394 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
1395 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1397 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1398 if ( !arg ) return -1;
1399 switch( *(int *) arg ) {
1400 case LDAP_OPT_X_TLS_NEVER:
1401 case LDAP_OPT_X_TLS_DEMAND:
1402 case LDAP_OPT_X_TLS_ALLOW:
1403 case LDAP_OPT_X_TLS_TRY:
1404 case LDAP_OPT_X_TLS_HARD:
1405 lo->ldo_tls_require_cert = * (int *) arg;
1409 #ifdef HAVE_OPENSSL_CRL
1410 case LDAP_OPT_X_TLS_CRLCHECK:
1411 if ( !arg ) return -1;
1412 switch( *(int *) arg ) {
1413 case LDAP_OPT_X_TLS_CRL_NONE:
1414 case LDAP_OPT_X_TLS_CRL_PEER:
1415 case LDAP_OPT_X_TLS_CRL_ALL:
1416 lo->ldo_tls_crlcheck = * (int *) arg;
1421 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1422 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
1423 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1426 case LDAP_OPT_X_TLS_RANDOM_FILE:
1429 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1430 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1433 case LDAP_OPT_X_TLS_NEWCTX:
1434 if ( !arg ) return -1;
1435 if ( lo->ldo_tls_ctx )
1436 SSL_CTX_free( lo->ldo_tls_ctx );
1437 lo->ldo_tls_ctx = NULL;
1438 return ldap_int_tls_init_ctx( lo, *(int *)arg );
1446 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1448 Sockbuf *sb = conn->lconn_sb;
1453 host = srv->lud_host;
1455 host = conn->lconn_server->lud_host;
1458 /* avoid NULL host */
1459 if( host == NULL ) {
1463 (void) ldap_pvt_tls_init();
1466 * Fortunately, the lib uses blocking io...
1468 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1469 ld->ld_errno = LDAP_CONNECT_ERROR;
1470 return (ld->ld_errno);
1473 ssl = ldap_pvt_tls_sb_ctx( sb );
1474 assert( ssl != NULL );
1477 * compare host with name(s) in certificate
1479 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
1480 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1481 if (ld->ld_errno != LDAP_SUCCESS) {
1482 return ld->ld_errno;
1486 return LDAP_SUCCESS;
1489 /* Derived from openssl/apps/s_cb.c */
1491 tls_info_cb( const SSL *ssl, int where, int ret )
1495 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1497 w = where & ~SSL_ST_MASK;
1498 if ( w & SSL_ST_CONNECT ) {
1500 } else if ( w & SSL_ST_ACCEPT ) {
1508 state = LDAP_STRDUP( state );
1512 if ( where & SSL_CB_LOOP ) {
1513 Debug( LDAP_DEBUG_TRACE,
1514 "TLS trace: %s:%s\n",
1517 } else if ( where & SSL_CB_ALERT ) {
1518 char *atype = (char *) SSL_alert_type_string_long( ret );
1519 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1520 op = ( where & SSL_CB_READ ) ? "read" : "write";
1523 atype = LDAP_STRDUP( atype );
1527 adesc = LDAP_STRDUP( adesc );
1531 Debug( LDAP_DEBUG_TRACE,
1532 "TLS trace: SSL3 alert %s:%s:%s\n",
1535 if ( atype ) LDAP_FREE( atype );
1536 if ( adesc ) LDAP_FREE( adesc );
1538 } else if ( where & SSL_CB_EXIT ) {
1540 Debug( LDAP_DEBUG_TRACE,
1541 "TLS trace: %s:failed in %s\n",
1543 } else if ( ret < 0 ) {
1544 Debug( LDAP_DEBUG_TRACE,
1545 "TLS trace: %s:error in %s\n",
1550 if ( state ) LDAP_FREE( state );
1555 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1564 char *certerr = NULL;
1566 cert = X509_STORE_CTX_get_current_cert( ctx );
1567 errnum = X509_STORE_CTX_get_error( ctx );
1568 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1571 * X509_get_*_name return pointers to the internal copies of
1572 * those things requested. So do not free them.
1574 subject = X509_get_subject_name( cert );
1575 issuer = X509_get_issuer_name( cert );
1576 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1577 sname = X509_NAME_oneline( subject, NULL, 0 );
1578 iname = X509_NAME_oneline( issuer, NULL, 0 );
1579 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1581 if ( sname ) __etoa( sname );
1582 if ( iname ) __etoa( iname );
1584 certerr = LDAP_STRDUP( certerr );
1588 Debug( LDAP_DEBUG_TRACE,
1589 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1591 sname ? sname : "-unknown-" );
1592 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1594 Debug( LDAP_DEBUG_ANY,
1595 "TLS certificate verification: Error, %s\n",
1599 CRYPTO_free ( sname );
1601 CRYPTO_free ( iname );
1603 if ( certerr ) LDAP_FREE( certerr );
1609 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1611 (void) tls_verify_cb( ok, ctx );
1615 /* Inspired by ERR_print_errors in OpenSSL */
1617 tls_report_error( void )
1624 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1625 ERR_error_string_n( l, buf, sizeof( buf ) );
1628 file = LDAP_STRDUP( file );
1629 __etoa( (char *)file );
1633 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1636 if ( file ) LDAP_FREE( (void *)file );
1642 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1646 /* FIXME: Pregenerate the key on startup */
1647 /* FIXME: Who frees the key? */
1648 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1651 Debug( LDAP_DEBUG_ANY,
1652 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1653 key_length, is_export ? "export" : "domestic", 0 );
1660 tls_seed_PRNG( const char *randfile )
1662 #ifndef URANDOM_DEVICE
1663 /* no /dev/urandom (or equiv) */
1665 char buffer[MAXPATHLEN];
1667 if (randfile == NULL) {
1668 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1669 * If $HOME is not set or buffer too small to hold the pathname,
1670 * an error occurs. - From RAND_file_name() man page.
1671 * The fact is that when $HOME is NULL, .rnd is used.
1673 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1675 } else if (RAND_egd(randfile) > 0) {
1680 if (randfile == NULL) {
1681 Debug( LDAP_DEBUG_ANY,
1682 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1687 total = RAND_load_file(randfile, -1);
1689 if (RAND_status() == 0) {
1690 Debug( LDAP_DEBUG_ANY,
1691 "TLS: PRNG not been seeded with enough data\n",
1696 /* assume if there was enough bits to seed that it's okay
1697 * to write derived bits to the file
1699 RAND_write_file(randfile);
1713 /* From the OpenSSL 0.9.7 distro */
1714 static const char dhpem512[] =
1715 "-----BEGIN DH PARAMETERS-----\n\
1716 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1717 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1718 -----END DH PARAMETERS-----\n";
1720 static const char dhpem1024[] =
1721 "-----BEGIN DH PARAMETERS-----\n\
1722 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1723 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1724 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1725 -----END DH PARAMETERS-----\n";
1727 static const char dhpem2048[] =
1728 "-----BEGIN DH PARAMETERS-----\n\
1729 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1730 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1731 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1732 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1733 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1734 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1735 -----END DH PARAMETERS-----\n";
1737 static const char dhpem4096[] =
1738 "-----BEGIN DH PARAMETERS-----\n\
1739 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1740 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1741 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1742 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1743 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1744 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1745 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1746 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1747 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1748 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1749 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1750 -----END DH PARAMETERS-----\n";
1752 static const struct dhinfo dhpem[] = {
1753 { 512, dhpem512, sizeof(dhpem512) },
1754 { 1024, dhpem1024, sizeof(dhpem1024) },
1755 { 2048, dhpem2048, sizeof(dhpem2048) },
1756 { 4096, dhpem4096, sizeof(dhpem4096) },
1761 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1763 struct dhplist *p = NULL;
1768 /* Do we have params of this length already? */
1769 #ifdef LDAP_R_COMPILE
1770 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1772 for ( p = dhparams; p; p=p->next ) {
1773 if ( p->keylength == key_length ) {
1774 #ifdef LDAP_R_COMPILE
1775 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1781 /* No - check for hardcoded params */
1783 for (i=0; dhpem[i].keylength; i++) {
1784 if ( dhpem[i].keylength == key_length ) {
1785 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1791 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1795 /* Generating on the fly is expensive/slow... */
1797 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1800 p = LDAP_MALLOC( sizeof(struct dhplist) );
1802 p->keylength = key_length;
1809 #ifdef LDAP_R_COMPILE
1810 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1817 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1822 if (HAS_TLS( sb )) {
1823 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1832 ldap_pvt_tls_get_strength( void *s )
1837 c = SSL_get_current_cipher((SSL *)s);
1838 return SSL_CIPHER_get_bits(c, NULL);
1846 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1853 x = SSL_get_certificate((SSL *)s);
1855 if (!x) return LDAP_INVALID_CREDENTIALS;
1857 xn = X509_get_subject_name(x);
1858 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1861 return LDAP_NOT_SUPPORTED;
1866 ldap_start_tls( LDAP *ld,
1867 LDAPControl **serverctrls,
1868 LDAPControl **clientctrls,
1871 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1872 NULL, serverctrls, clientctrls, msgidp );
1876 ldap_install_tls( LDAP *ld )
1879 return LDAP_NOT_SUPPORTED;
1881 if ( ldap_tls_inplace( ld ) ) {
1882 return LDAP_LOCAL_ERROR;
1885 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1890 ldap_start_tls_s ( LDAP *ld,
1891 LDAPControl **serverctrls,
1892 LDAPControl **clientctrls )
1895 return LDAP_NOT_SUPPORTED;
1898 char *rspoid = NULL;
1899 struct berval *rspdata = NULL;
1901 /* XXYYZ: this initiates operation only on default connection! */
1903 if ( ldap_tls_inplace( ld ) ) {
1904 return LDAP_LOCAL_ERROR;
1907 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1908 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1910 if ( rspoid != NULL ) {
1914 if ( rspdata != NULL ) {
1915 ber_bvfree( rspdata );
1918 if ( rc == LDAP_SUCCESS ) {
1919 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );