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;
97 static void tls_init_threads( void )
101 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
102 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
104 CRYPTO_set_locking_callback( tls_locking_cb );
105 /* FIXME: the thread id should be added somehow... */
107 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
109 #endif /* LDAP_R_COMPILE */
112 ldap_int_tls_destroy( struct ldapoptions *lo )
114 if ( lo->ldo_tls_ctx ) {
115 SSL_CTX_free( lo->ldo_tls_ctx );
116 lo->ldo_tls_ctx = NULL;
119 if ( lo->ldo_tls_certfile ) {
120 LDAP_FREE( lo->ldo_tls_certfile );
121 lo->ldo_tls_certfile = NULL;
123 if ( lo->ldo_tls_keyfile ) {
124 LDAP_FREE( lo->ldo_tls_keyfile );
125 lo->ldo_tls_keyfile = NULL;
127 if ( lo->ldo_tls_dhfile ) {
128 LDAP_FREE( lo->ldo_tls_dhfile );
129 lo->ldo_tls_dhfile = NULL;
131 if ( lo->ldo_tls_cacertfile ) {
132 LDAP_FREE( lo->ldo_tls_cacertfile );
133 lo->ldo_tls_cacertfile = NULL;
135 if ( lo->ldo_tls_cacertdir ) {
136 LDAP_FREE( lo->ldo_tls_cacertdir );
137 lo->ldo_tls_cacertdir = NULL;
139 if ( lo->ldo_tls_ciphersuite ) {
140 LDAP_FREE( lo->ldo_tls_ciphersuite );
141 lo->ldo_tls_ciphersuite = NULL;
146 * Tear down the TLS subsystem. Should only be called once.
149 ldap_pvt_tls_destroy( void )
151 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
153 ldap_int_tls_destroy( lo );
159 if ( tls_opt_randfile ) {
160 LDAP_FREE( tls_opt_randfile );
161 tls_opt_randfile = NULL;
166 * Initialize TLS subsystem. Should be called only once.
169 ldap_pvt_tls_init( void )
171 static int tls_initialized = 0;
173 if ( tls_initialized++ ) return 0;
177 char *file = LDAP_STRDUP( tls_opt_randfile );
178 if ( file ) __atoe( file );
179 (void) tls_seed_PRNG( file );
183 (void) tls_seed_PRNG( tls_opt_randfile );
186 #ifdef LDAP_R_COMPILE
190 SSL_load_error_strings();
191 SSLeay_add_ssl_algorithms();
193 /* FIXME: mod_ssl does this */
194 X509V3_add_standard_extensions();
199 * initialize a new TLS context
202 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
204 STACK_OF(X509_NAME) *calist;
206 char *ciphersuite = lo->ldo_tls_ciphersuite;
207 char *cacertfile = lo->ldo_tls_cacertfile;
208 char *cacertdir = lo->ldo_tls_cacertdir;
209 char *certfile = lo->ldo_tls_certfile;
210 char *keyfile = lo->ldo_tls_keyfile;
211 char *dhfile = lo->ldo_tls_dhfile;
213 if ( lo->ldo_tls_ctx )
216 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
217 /* minimum configuration not provided */
218 return LDAP_NOT_SUPPORTED;
222 /* This ASCII/EBCDIC handling is a real pain! */
224 ciphersuite = LDAP_STRDUP( ciphersuite );
225 __atoe( ciphersuite );
228 cacertfile = LDAP_STRDUP( cacertfile );
229 __atoe( cacertfile );
232 cacertdir = LDAP_STRDUP( cacertdir );
236 certfile = LDAP_STRDUP( certfile );
240 keyfile = LDAP_STRDUP( keyfile );
244 dhfile = LDAP_STRDUP( dhfile );
248 lo->ldo_tls_ctx = SSL_CTX_new( SSLv23_method() );
249 if ( lo->ldo_tls_ctx == NULL ) {
250 Debug( LDAP_DEBUG_ANY,
251 "TLS: could not allocate default ctx (%lu).\n",
252 ERR_peek_error(),0,0);
258 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
259 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
262 if ( lo->ldo_tls_ciphersuite &&
263 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
265 Debug( LDAP_DEBUG_ANY,
266 "TLS: could not set cipher list %s.\n",
267 lo->ldo_tls_ciphersuite, 0, 0 );
273 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
274 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
275 cacertfile, cacertdir ) ||
276 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
278 Debug( LDAP_DEBUG_ANY, "TLS: "
279 "could not load verify locations (file:`%s',dir:`%s').\n",
280 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
281 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
289 /* List of CA names to send to a client */
290 calist = get_ca_list( cacertfile, cacertdir );
292 Debug( LDAP_DEBUG_ANY, "TLS: "
293 "could not load client CA list (file:`%s',dir:`%s').\n",
294 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
295 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
302 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
306 if ( lo->ldo_tls_certfile &&
307 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
308 certfile, SSL_FILETYPE_PEM ) )
310 Debug( LDAP_DEBUG_ANY,
311 "TLS: could not use certificate `%s'.\n",
312 lo->ldo_tls_certfile,0,0);
318 /* Key validity is checked automatically if cert has already been set */
319 if ( lo->ldo_tls_keyfile &&
320 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
321 keyfile, SSL_FILETYPE_PEM ) )
323 Debug( LDAP_DEBUG_ANY,
324 "TLS: could not use key file `%s'.\n",
325 lo->ldo_tls_keyfile,0,0);
331 if ( lo->ldo_tls_dhfile ) {
336 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
337 Debug( LDAP_DEBUG_ANY,
338 "TLS: could not use DH parameters file `%s'.\n",
339 lo->ldo_tls_dhfile,0,0);
344 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
345 p = LDAP_MALLOC( sizeof(dhplist) );
347 p->keylength = DH_size( dh ) * 8;
356 if ( tls_opt_trace ) {
357 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
361 if ( lo->ldo_tls_require_cert ) {
363 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
364 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
365 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
369 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
370 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
371 tls_verify_ok : tls_verify_cb );
372 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
373 if ( lo->ldo_tls_dhfile ) {
374 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
376 #ifdef HAVE_OPENSSL_CRL
377 if ( lo->ldo_tls_crlcheck ) {
378 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
379 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
380 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
381 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
382 X509_STORE_set_flags( x509_s,
383 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
389 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
390 SSL_CTX_free( lo->ldo_tls_ctx );
391 lo->ldo_tls_ctx = NULL;
394 LDAP_FREE( ciphersuite );
395 LDAP_FREE( cacertfile );
396 LDAP_FREE( cacertdir );
397 LDAP_FREE( certfile );
398 LDAP_FREE( keyfile );
405 * initialize the default context
408 ldap_pvt_tls_init_def_ctx( int is_server )
410 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
412 #ifdef LDAP_R_COMPILE
413 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
415 rc = ldap_int_tls_init_ctx( lo, is_server );
416 #ifdef LDAP_R_COMPILE
417 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
422 static STACK_OF(X509_NAME) *
423 get_ca_list( char * bundle, char * dir )
425 STACK_OF(X509_NAME) *ca_list = NULL;
428 ca_list = SSL_load_client_CA_file( bundle );
430 #if defined(HAVE_DIRENT_H) || defined(dirent)
435 ca_list = sk_X509_NAME_new_null();
438 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
440 sk_X509_NAME_free( ca_list );
449 alloc_handle( void *ctx_arg, int is_server )
455 ctx = (SSL_CTX *) ctx_arg;
457 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
458 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
459 ctx = lo->ldo_tls_ctx;
462 ssl = SSL_new( ctx );
464 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
471 update_flags( Sockbuf *sb, SSL * ssl, int rc )
473 int err = SSL_get_error(ssl, rc);
475 sb->sb_trans_needs_read = 0;
476 sb->sb_trans_needs_write = 0;
478 if (err == SSL_ERROR_WANT_READ) {
479 sb->sb_trans_needs_read = 1;
482 } else if (err == SSL_ERROR_WANT_WRITE) {
483 sb->sb_trans_needs_write = 1;
486 } else if (err == SSL_ERROR_WANT_CONNECT) {
493 * TLS support for LBER Sockbufs
498 Sockbuf_IO_Desc *sbiod;
501 static BIO_METHOD sb_tls_bio_method;
504 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
509 assert( sbiod != NULL );
511 p = LBER_MALLOC( sizeof( *p ) );
518 bio = BIO_new( &sb_tls_bio_method );
519 bio->ptr = (void *)p;
520 SSL_set_bio( p->ssl, bio, bio );
521 sbiod->sbiod_pvt = p;
526 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
530 assert( sbiod != NULL );
531 assert( sbiod->sbiod_pvt != NULL );
533 p = (struct tls_data *)sbiod->sbiod_pvt;
535 LBER_FREE( sbiod->sbiod_pvt );
536 sbiod->sbiod_pvt = NULL;
541 sb_tls_close( Sockbuf_IO_Desc *sbiod )
545 assert( sbiod != NULL );
546 assert( sbiod->sbiod_pvt != NULL );
548 p = (struct tls_data *)sbiod->sbiod_pvt;
549 SSL_shutdown( p->ssl );
554 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
558 assert( sbiod != NULL );
559 assert( sbiod->sbiod_pvt != NULL );
561 p = (struct tls_data *)sbiod->sbiod_pvt;
563 if ( opt == LBER_SB_OPT_GET_SSL ) {
564 *((SSL **)arg) = p->ssl;
567 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
568 if( SSL_pending( p->ssl ) > 0 ) {
573 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
577 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
583 assert( sbiod != NULL );
584 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
586 p = (struct tls_data *)sbiod->sbiod_pvt;
588 ret = SSL_read( p->ssl, (char *)buf, len );
590 errno = WSAGetLastError();
592 err = SSL_get_error( p->ssl, ret );
593 if (err == SSL_ERROR_WANT_READ ) {
594 sbiod->sbiod_sb->sb_trans_needs_read = 1;
598 sbiod->sbiod_sb->sb_trans_needs_read = 0;
603 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
609 assert( sbiod != NULL );
610 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
612 p = (struct tls_data *)sbiod->sbiod_pvt;
614 ret = SSL_write( p->ssl, (char *)buf, len );
616 errno = WSAGetLastError();
618 err = SSL_get_error( p->ssl, ret );
619 if (err == SSL_ERROR_WANT_WRITE ) {
620 sbiod->sbiod_sb->sb_trans_needs_write = 1;
624 sbiod->sbiod_sb->sb_trans_needs_write = 0;
629 static Sockbuf_IO sb_tls_sbio =
631 sb_tls_setup, /* sbi_setup */
632 sb_tls_remove, /* sbi_remove */
633 sb_tls_ctrl, /* sbi_ctrl */
634 sb_tls_read, /* sbi_read */
635 sb_tls_write, /* sbi_write */
636 sb_tls_close /* sbi_close */
640 sb_tls_bio_create( BIO *b ) {
649 sb_tls_bio_destroy( BIO *b )
651 if ( b == NULL ) return 0;
653 b->ptr = NULL; /* sb_tls_remove() will free it */
660 sb_tls_bio_read( BIO *b, char *buf, int len )
665 if ( buf == NULL || len <= 0 ) return 0;
667 p = (struct tls_data *)b->ptr;
669 if ( p == NULL || p->sbiod == NULL ) {
673 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
675 BIO_clear_retry_flags( b );
678 if ( err == EAGAIN || err == EWOULDBLOCK ) {
679 BIO_set_retry_read( b );
687 sb_tls_bio_write( BIO *b, const char *buf, int len )
692 if ( buf == NULL || len <= 0 ) return 0;
694 p = (struct tls_data *)b->ptr;
696 if ( p == NULL || p->sbiod == NULL ) {
700 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
702 BIO_clear_retry_flags( b );
705 if ( err == EAGAIN || err == EWOULDBLOCK ) {
706 BIO_set_retry_write( b );
714 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
716 if ( cmd == BIO_CTRL_FLUSH ) {
717 /* The OpenSSL library needs this */
724 sb_tls_bio_gets( BIO *b, char *buf, int len )
730 sb_tls_bio_puts( BIO *b, const char *str )
732 return sb_tls_bio_write( b, str, strlen( str ) );
735 static BIO_METHOD sb_tls_bio_method =
737 ( 100 | 0x400 ), /* it's a source/sink BIO */
749 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
750 * a SSL_CTX * or NULL, in which case the default ctx is used.
754 * 0 - Success. Connection is ready for communication.
755 * <0 - Error. Can't create a TLS stream.
756 * >0 - Partial success.
757 * Do a select (using information from lber_pvt_sb_needs_{read,write}
762 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
764 Sockbuf *sb = conn->lconn_sb;
768 if ( HAS_TLS( sb ) ) {
769 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
772 struct ldapoptions *lo;
775 ctx = ld->ld_options.ldo_tls_ctx;
777 ssl = alloc_handle( ctx, 0 );
779 if ( ssl == NULL ) return -1;
782 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
783 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
785 ber_sockbuf_add_io( sb, &sb_tls_sbio,
786 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
788 lo = LDAP_INT_GLOBAL_OPT();
790 ctx = lo->ldo_tls_ctx;
791 ld->ld_options.ldo_tls_ctx = ctx;
792 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
794 if ( ld->ld_options.ldo_tls_connect_cb )
795 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
796 ld->ld_options.ldo_tls_connect_arg );
797 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
798 ld->ld_options.ldo_tls_connect_cb )
799 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
802 err = SSL_connect( ssl );
805 errno = WSAGetLastError();
809 if ( update_flags( sb, ssl, err )) {
813 if ((err = ERR_peek_error())) {
816 if ( ld->ld_error ) {
817 LDAP_FREE( ld->ld_error );
819 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
821 if ( ld->ld_error ) __etoa(ld->ld_error);
825 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
826 ld->ld_error ? ld->ld_error : "" ,0,0);
828 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
829 LBER_SBIOD_LEVEL_TRANSPORT );
831 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
832 LBER_SBIOD_LEVEL_TRANSPORT );
841 * Call this to do a TLS accept on a sockbuf.
842 * Everything else is the same as with tls_connect.
845 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
850 if ( HAS_TLS( sb ) ) {
851 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
854 ssl = alloc_handle( ctx_arg, 1 );
855 if ( ssl == NULL ) return -1;
858 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
859 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
861 ber_sockbuf_add_io( sb, &sb_tls_sbio,
862 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
865 err = SSL_accept( ssl );
868 errno = WSAGetLastError();
871 if ( update_flags( sb, ssl, err )) return 1;
873 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
876 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
877 LBER_SBIOD_LEVEL_TRANSPORT );
879 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
880 LBER_SBIOD_LEVEL_TRANSPORT );
889 ldap_pvt_tls_inplace ( Sockbuf *sb )
891 return HAS_TLS( sb ) ? 1 : 0;
895 ldap_tls_inplace( LDAP *ld )
899 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
900 sb = ld->ld_defconn->lconn_sb;
902 } else if ( ld->ld_sb ) {
909 return ldap_pvt_tls_inplace( sb );
913 tls_get_cert( SSL *s )
915 /* If peer cert was bad, treat as if no cert was given */
916 if (SSL_get_verify_result(s)) {
917 /* If we can send an alert, do so */
918 if (SSL_version(s) != SSL2_VERSION) {
919 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
923 return SSL_get_peer_certificate(s);
927 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
928 LDAPDN_rewrite_dummy *func, unsigned flags )
934 x = tls_get_cert((SSL *)s);
936 if (!x) return LDAP_INVALID_CREDENTIALS;
938 xn = X509_get_subject_name(x);
939 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
945 ldap_pvt_tls_get_peer_hostname( void *s )
952 x = tls_get_cert((SSL *)s);
955 xn = X509_get_subject_name(x);
957 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
963 p = LDAP_STRDUP(buf);
968 /* what kind of hostname were we given? */
974 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
976 int i, ret = LDAP_LOCAL_ERROR;
982 struct in6_addr addr;
987 if( ldap_int_hostname &&
988 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
990 name = ldap_int_hostname;
995 x = tls_get_cert((SSL *)s);
997 Debug( LDAP_DEBUG_ANY,
998 "TLS: unable to get peer certificate.\n",
1000 /* If this was a fatal condition, things would have
1001 * aborted long before now.
1003 return LDAP_SUCCESS;
1006 #ifdef LDAP_PF_INET6
1007 if (name[0] == '[' && strchr(name, ']')) {
1008 char *n2 = ldap_strdup(name+1);
1009 *strchr(n2, ']') = 2;
1010 if (inet_pton(AF_INET6, n2, &addr))
1015 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1016 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1019 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1022 STACK_OF(GENERAL_NAME) *alt;
1024 ex = X509_get_ext(x, i);
1025 alt = X509V3_EXT_d2i(ex);
1027 int n, len1 = 0, len2 = 0;
1028 char *domain = NULL;
1031 if (ntype == IS_DNS) {
1032 len1 = strlen(name);
1033 domain = strchr(name, '.');
1035 len2 = len1 - (domain-name);
1038 n = sk_GENERAL_NAME_num(alt);
1039 for (i=0; i<n; i++) {
1042 gn = sk_GENERAL_NAME_value(alt, i);
1043 if (gn->type == GEN_DNS) {
1044 if (ntype != IS_DNS) continue;
1046 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1047 sl = ASN1_STRING_length(gn->d.ia5);
1050 if (sl == 0) continue;
1052 /* Is this an exact match? */
1053 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1057 /* Is this a wildcard match? */
1058 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1059 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1064 } else if (gn->type == GEN_IPADD) {
1065 if (ntype == IS_DNS) continue;
1067 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1068 sl = ASN1_STRING_length(gn->d.ia5);
1070 #ifdef LDAP_PF_INET6
1071 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1075 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1078 if (!memcmp(sn, &addr, sl)) {
1084 GENERAL_NAMES_free(alt);
1085 if (i < n) { /* Found a match */
1091 if (ret != LDAP_SUCCESS) {
1096 xn = X509_get_subject_name(x);
1097 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1098 buf, sizeof(buf)) == -1)
1100 Debug( LDAP_DEBUG_ANY,
1101 "TLS: unable to get common name from peer certificate.\n",
1103 ret = LDAP_CONNECT_ERROR;
1104 if ( ld->ld_error ) {
1105 LDAP_FREE( ld->ld_error );
1107 ld->ld_error = LDAP_STRDUP(
1108 _("TLS: unable to get CN from peer certificate"));
1110 } else if (strcasecmp(name, buf) == 0 ) {
1113 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1114 char *domain = strchr(name, '.');
1120 dlen = sl - (domain-name);
1123 /* Is this a wildcard match? */
1124 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1130 if( ret == LDAP_LOCAL_ERROR ) {
1131 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1132 "common name in certificate (%s).\n",
1134 ret = LDAP_CONNECT_ERROR;
1135 if ( ld->ld_error ) {
1136 LDAP_FREE( ld->ld_error );
1138 ld->ld_error = LDAP_STRDUP(
1139 _("TLS: hostname does not match CN in peer certificate"));
1147 ldap_pvt_tls_get_peer_issuer( void *s )
1149 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1154 x = SSL_get_peer_certificate((SSL *)s);
1156 if (!x) return NULL;
1158 xn = X509_get_issuer_name(x);
1159 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1168 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1173 case LDAP_OPT_X_TLS_CACERTFILE:
1174 case LDAP_OPT_X_TLS_CACERTDIR:
1175 case LDAP_OPT_X_TLS_CERTFILE:
1176 case LDAP_OPT_X_TLS_KEYFILE:
1177 case LDAP_OPT_X_TLS_RANDOM_FILE:
1178 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1179 case LDAP_OPT_X_TLS_DHFILE:
1180 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1182 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1183 case LDAP_OPT_X_TLS:
1185 if ( strcasecmp( arg, "never" ) == 0 ) {
1186 i = LDAP_OPT_X_TLS_NEVER ;
1188 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1189 i = LDAP_OPT_X_TLS_DEMAND ;
1191 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1192 i = LDAP_OPT_X_TLS_ALLOW ;
1194 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1195 i = LDAP_OPT_X_TLS_TRY ;
1197 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1198 ( strcasecmp( arg, "on" ) == 0 ) ||
1199 ( strcasecmp( arg, "yes" ) == 0) ||
1200 ( strcasecmp( arg, "true" ) == 0 ) )
1202 i = LDAP_OPT_X_TLS_HARD ;
1206 return ldap_pvt_tls_set_option( ld, option, &i );
1209 #ifdef HAVE_OPENSSL_CRL
1210 case LDAP_OPT_X_TLS_CRLCHECK:
1212 if ( strcasecmp( arg, "none" ) == 0 ) {
1213 i = LDAP_OPT_X_TLS_CRL_NONE ;
1214 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1215 i = LDAP_OPT_X_TLS_CRL_PEER ;
1216 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1217 i = LDAP_OPT_X_TLS_CRL_ALL ;
1220 return ldap_pvt_tls_set_option( ld, option, &i );
1229 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1231 struct ldapoptions *lo;
1234 assert( LDAP_VALID( ld ) );
1236 if( !LDAP_VALID( ld ) ) {
1237 return LDAP_OPT_ERROR;
1240 lo = &ld->ld_options;
1243 /* Get pointer to global option structure */
1244 lo = LDAP_INT_GLOBAL_OPT();
1246 return LDAP_NO_MEMORY;
1251 case LDAP_OPT_X_TLS:
1252 *(int *)arg = lo->ldo_tls_mode;
1254 case LDAP_OPT_X_TLS_CTX:
1255 *(void **)arg = lo->ldo_tls_ctx;
1256 if ( lo->ldo_tls_ctx ) {
1257 SSL_CTX *ctx = lo->ldo_tls_ctx;
1258 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
1261 case LDAP_OPT_X_TLS_CACERTFILE:
1262 *(char **)arg = lo->ldo_tls_cacertfile ?
1263 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
1265 case LDAP_OPT_X_TLS_CACERTDIR:
1266 *(char **)arg = lo->ldo_tls_cacertdir ?
1267 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
1269 case LDAP_OPT_X_TLS_CERTFILE:
1270 *(char **)arg = lo->ldo_tls_certfile ?
1271 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
1273 case LDAP_OPT_X_TLS_KEYFILE:
1274 *(char **)arg = lo->ldo_tls_keyfile ?
1275 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
1277 case LDAP_OPT_X_TLS_DHFILE:
1278 *(char **)arg = lo->ldo_tls_dhfile ?
1279 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
1281 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1282 *(int *)arg = lo->ldo_tls_require_cert;
1284 #ifdef HAVE_OPENSSL_CRL
1285 case LDAP_OPT_X_TLS_CRLCHECK:
1286 *(int *)arg = lo->ldo_tls_crlcheck;
1289 case LDAP_OPT_X_TLS_RANDOM_FILE:
1290 *(char **)arg = tls_opt_randfile ?
1291 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1293 case LDAP_OPT_X_TLS_SSL_CTX: {
1296 LDAPConn *conn = ld->ld_defconn;
1297 if ( conn != NULL ) {
1298 Sockbuf *sb = conn->lconn_sb;
1299 retval = ldap_pvt_tls_sb_ctx( sb );
1302 *(void **)arg = retval;
1305 case LDAP_OPT_X_TLS_CONNECT_CB:
1306 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1308 case LDAP_OPT_X_TLS_CONNECT_ARG:
1309 *(void **)arg = lo->ldo_tls_connect_arg;
1318 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1320 struct ldapoptions *lo;
1323 assert( LDAP_VALID( ld ) );
1325 if( !LDAP_VALID( ld ) ) {
1326 return LDAP_OPT_ERROR;
1329 lo = &ld->ld_options;
1332 /* Get pointer to global option structure */
1333 lo = LDAP_INT_GLOBAL_OPT();
1335 return LDAP_NO_MEMORY;
1340 case LDAP_OPT_X_TLS:
1341 if ( !arg ) return -1;
1343 switch( *(int *) arg ) {
1344 case LDAP_OPT_X_TLS_NEVER:
1345 case LDAP_OPT_X_TLS_DEMAND:
1346 case LDAP_OPT_X_TLS_ALLOW:
1347 case LDAP_OPT_X_TLS_TRY:
1348 case LDAP_OPT_X_TLS_HARD:
1350 lo->ldo_tls_mode = *(int *)arg;
1357 case LDAP_OPT_X_TLS_CTX:
1358 if ( lo->ldo_tls_ctx )
1359 SSL_CTX_free( lo->ldo_tls_ctx );
1360 lo->ldo_tls_ctx = arg;
1362 case LDAP_OPT_X_TLS_CONNECT_CB:
1363 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1365 case LDAP_OPT_X_TLS_CONNECT_ARG:
1366 lo->ldo_tls_connect_arg = arg;
1368 case LDAP_OPT_X_TLS_CACERTFILE:
1369 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
1370 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1372 case LDAP_OPT_X_TLS_CACERTDIR:
1373 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
1374 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1376 case LDAP_OPT_X_TLS_CERTFILE:
1377 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
1378 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1380 case LDAP_OPT_X_TLS_KEYFILE:
1381 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
1382 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1384 case LDAP_OPT_X_TLS_DHFILE:
1385 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
1386 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1388 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1389 if ( !arg ) return -1;
1390 switch( *(int *) arg ) {
1391 case LDAP_OPT_X_TLS_NEVER:
1392 case LDAP_OPT_X_TLS_DEMAND:
1393 case LDAP_OPT_X_TLS_ALLOW:
1394 case LDAP_OPT_X_TLS_TRY:
1395 case LDAP_OPT_X_TLS_HARD:
1396 lo->ldo_tls_require_cert = * (int *) arg;
1400 #ifdef HAVE_OPENSSL_CRL
1401 case LDAP_OPT_X_TLS_CRLCHECK:
1402 if ( !arg ) return -1;
1403 switch( *(int *) arg ) {
1404 case LDAP_OPT_X_TLS_CRL_NONE:
1405 case LDAP_OPT_X_TLS_CRL_PEER:
1406 case LDAP_OPT_X_TLS_CRL_ALL:
1407 lo->ldo_tls_crlcheck = * (int *) arg;
1412 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1413 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
1414 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1417 case LDAP_OPT_X_TLS_RANDOM_FILE:
1420 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1421 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1424 case LDAP_OPT_X_TLS_NEWCTX:
1425 if ( !arg ) return -1;
1426 if ( lo->ldo_tls_ctx )
1427 SSL_CTX_free( lo->ldo_tls_ctx );
1428 lo->ldo_tls_ctx = NULL;
1429 return ldap_int_tls_init_ctx( lo, *(int *)arg );
1437 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1439 Sockbuf *sb = conn->lconn_sb;
1444 host = srv->lud_host;
1446 host = conn->lconn_server->lud_host;
1449 /* avoid NULL host */
1450 if( host == NULL ) {
1454 (void) ldap_pvt_tls_init();
1457 * Fortunately, the lib uses blocking io...
1459 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1460 ld->ld_errno = LDAP_CONNECT_ERROR;
1461 return (ld->ld_errno);
1464 ssl = ldap_pvt_tls_sb_ctx( sb );
1465 assert( ssl != NULL );
1468 * compare host with name(s) in certificate
1470 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
1471 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1472 if (ld->ld_errno != LDAP_SUCCESS) {
1473 return ld->ld_errno;
1477 return LDAP_SUCCESS;
1480 /* Derived from openssl/apps/s_cb.c */
1482 tls_info_cb( const SSL *ssl, int where, int ret )
1486 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1488 w = where & ~SSL_ST_MASK;
1489 if ( w & SSL_ST_CONNECT ) {
1491 } else if ( w & SSL_ST_ACCEPT ) {
1499 state = LDAP_STRDUP( state );
1503 if ( where & SSL_CB_LOOP ) {
1504 Debug( LDAP_DEBUG_TRACE,
1505 "TLS trace: %s:%s\n",
1508 } else if ( where & SSL_CB_ALERT ) {
1509 char *atype = (char *) SSL_alert_type_string_long( ret );
1510 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1511 op = ( where & SSL_CB_READ ) ? "read" : "write";
1514 atype = LDAP_STRDUP( atype );
1518 adesc = LDAP_STRDUP( adesc );
1522 Debug( LDAP_DEBUG_TRACE,
1523 "TLS trace: SSL3 alert %s:%s:%s\n",
1526 if ( atype ) LDAP_FREE( atype );
1527 if ( adesc ) LDAP_FREE( adesc );
1529 } else if ( where & SSL_CB_EXIT ) {
1531 Debug( LDAP_DEBUG_TRACE,
1532 "TLS trace: %s:failed in %s\n",
1534 } else if ( ret < 0 ) {
1535 Debug( LDAP_DEBUG_TRACE,
1536 "TLS trace: %s:error in %s\n",
1541 if ( state ) LDAP_FREE( state );
1546 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1555 char *certerr = NULL;
1557 cert = X509_STORE_CTX_get_current_cert( ctx );
1558 errnum = X509_STORE_CTX_get_error( ctx );
1559 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1562 * X509_get_*_name return pointers to the internal copies of
1563 * those things requested. So do not free them.
1565 subject = X509_get_subject_name( cert );
1566 issuer = X509_get_issuer_name( cert );
1567 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1568 sname = X509_NAME_oneline( subject, NULL, 0 );
1569 iname = X509_NAME_oneline( issuer, NULL, 0 );
1570 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1572 if ( sname ) __etoa( sname );
1573 if ( iname ) __etoa( iname );
1575 certerr = LDAP_STRDUP( certerr );
1579 Debug( LDAP_DEBUG_TRACE,
1580 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1582 sname ? sname : "-unknown-" );
1583 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1585 Debug( LDAP_DEBUG_ANY,
1586 "TLS certificate verification: Error, %s\n",
1590 CRYPTO_free ( sname );
1592 CRYPTO_free ( iname );
1594 if ( certerr ) LDAP_FREE( certerr );
1600 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1602 (void) tls_verify_cb( ok, ctx );
1606 /* Inspired by ERR_print_errors in OpenSSL */
1608 tls_report_error( void )
1615 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1616 ERR_error_string_n( l, buf, sizeof( buf ) );
1619 file = LDAP_STRDUP( file );
1620 __etoa( (char *)file );
1624 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1627 if ( file ) LDAP_FREE( (void *)file );
1633 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1637 /* FIXME: Pregenerate the key on startup */
1638 /* FIXME: Who frees the key? */
1639 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1642 Debug( LDAP_DEBUG_ANY,
1643 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1644 key_length, is_export ? "export" : "domestic", 0 );
1651 tls_seed_PRNG( const char *randfile )
1653 #ifndef URANDOM_DEVICE
1654 /* no /dev/urandom (or equiv) */
1656 char buffer[MAXPATHLEN];
1658 if (randfile == NULL) {
1659 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1660 * If $HOME is not set or buffer too small to hold the pathname,
1661 * an error occurs. - From RAND_file_name() man page.
1662 * The fact is that when $HOME is NULL, .rnd is used.
1664 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1666 } else if (RAND_egd(randfile) > 0) {
1671 if (randfile == NULL) {
1672 Debug( LDAP_DEBUG_ANY,
1673 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1678 total = RAND_load_file(randfile, -1);
1680 if (RAND_status() == 0) {
1681 Debug( LDAP_DEBUG_ANY,
1682 "TLS: PRNG not been seeded with enough data\n",
1687 /* assume if there was enough bits to seed that it's okay
1688 * to write derived bits to the file
1690 RAND_write_file(randfile);
1704 /* From the OpenSSL 0.9.7 distro */
1705 static const char dhpem512[] =
1706 "-----BEGIN DH PARAMETERS-----\n\
1707 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1708 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1709 -----END DH PARAMETERS-----\n";
1711 static const char dhpem1024[] =
1712 "-----BEGIN DH PARAMETERS-----\n\
1713 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1714 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1715 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1716 -----END DH PARAMETERS-----\n";
1718 static const char dhpem2048[] =
1719 "-----BEGIN DH PARAMETERS-----\n\
1720 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1721 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1722 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1723 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1724 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1725 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1726 -----END DH PARAMETERS-----\n";
1728 static const char dhpem4096[] =
1729 "-----BEGIN DH PARAMETERS-----\n\
1730 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1731 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1732 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1733 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1734 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1735 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1736 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1737 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1738 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1739 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1740 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1741 -----END DH PARAMETERS-----\n";
1743 static const struct dhinfo dhpem[] = {
1744 { 512, dhpem512, sizeof(dhpem512) },
1745 { 1024, dhpem1024, sizeof(dhpem1024) },
1746 { 2048, dhpem2048, sizeof(dhpem2048) },
1747 { 4096, dhpem4096, sizeof(dhpem4096) },
1752 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1754 struct dhplist *p = NULL;
1759 /* Do we have params of this length already? */
1760 #ifdef LDAP_R_COMPILE
1761 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1763 for ( p = dhparams; p; p=p->next ) {
1764 if ( p->keylength == key_length ) {
1765 #ifdef LDAP_R_COMPILE
1766 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1772 /* No - check for hardcoded params */
1774 for (i=0; dhpem[i].keylength; i++) {
1775 if ( dhpem[i].keylength == key_length ) {
1776 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1782 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1786 /* Generating on the fly is expensive/slow... */
1788 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1791 p = LDAP_MALLOC( sizeof(struct dhplist) );
1793 p->keylength = key_length;
1800 #ifdef LDAP_R_COMPILE
1801 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1808 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1813 if (HAS_TLS( sb )) {
1814 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1823 ldap_pvt_tls_get_strength( void *s )
1828 c = SSL_get_current_cipher((SSL *)s);
1829 return SSL_CIPHER_get_bits(c, NULL);
1837 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1844 x = SSL_get_certificate((SSL *)s);
1846 if (!x) return LDAP_INVALID_CREDENTIALS;
1848 xn = X509_get_subject_name(x);
1849 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1852 return LDAP_NOT_SUPPORTED;
1857 ldap_start_tls( LDAP *ld,
1858 LDAPControl **serverctrls,
1859 LDAPControl **clientctrls,
1862 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1863 NULL, serverctrls, clientctrls, msgidp );
1867 ldap_install_tls( LDAP *ld )
1870 return LDAP_NOT_SUPPORTED;
1872 if ( ldap_tls_inplace( ld ) ) {
1873 return LDAP_LOCAL_ERROR;
1876 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1881 ldap_start_tls_s ( LDAP *ld,
1882 LDAPControl **serverctrls,
1883 LDAPControl **clientctrls )
1886 return LDAP_NOT_SUPPORTED;
1889 char *rspoid = NULL;
1890 struct berval *rspdata = NULL;
1892 /* XXYYZ: this initiates operation only on default connection! */
1894 if ( ldap_tls_inplace( ld ) ) {
1895 return LDAP_LOCAL_ERROR;
1898 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1899 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1901 if ( rspoid != NULL ) {
1905 if ( rspdata != NULL ) {
1906 ber_bvfree( rspdata );
1909 if ( rc == LDAP_SUCCESS ) {
1910 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );