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_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 /* FIXME: the thread id should be added somehow... */
120 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
121 ldap_pvt_thread_mutex_init( &tls_connect_mutex );
123 #endif /* LDAP_R_COMPILE */
126 * Tear down the TLS subsystem. Should only be called once.
129 ldap_pvt_tls_destroy( void )
131 SSL_CTX_free(tls_def_ctx);
138 if ( tls_opt_certfile ) {
139 LDAP_FREE( tls_opt_certfile );
140 tls_opt_certfile = NULL;
142 if ( tls_opt_keyfile ) {
143 LDAP_FREE( tls_opt_keyfile );
144 tls_opt_keyfile = NULL;
146 if ( tls_opt_dhfile ) {
147 LDAP_FREE( tls_opt_dhfile );
148 tls_opt_dhfile = NULL;
150 if ( tls_opt_cacertfile ) {
151 LDAP_FREE( tls_opt_cacertfile );
152 tls_opt_cacertfile = NULL;
154 if ( tls_opt_cacertdir ) {
155 LDAP_FREE( tls_opt_cacertdir );
156 tls_opt_cacertdir = NULL;
158 if ( tls_opt_ciphersuite ) {
159 LDAP_FREE( tls_opt_ciphersuite );
160 tls_opt_ciphersuite = NULL;
162 if ( tls_opt_randfile ) {
163 LDAP_FREE( tls_opt_randfile );
164 tls_opt_randfile = NULL;
169 * Initialize TLS subsystem. Should be called only once.
172 ldap_pvt_tls_init( void )
174 static int tls_initialized = 0;
176 if ( tls_initialized++ ) return 0;
180 char *file = LDAP_STRDUP( tls_opt_randfile );
181 if ( file ) __atoe( file );
182 (void) tls_seed_PRNG( file );
186 (void) tls_seed_PRNG( tls_opt_randfile );
189 #ifdef LDAP_R_COMPILE
193 SSL_load_error_strings();
194 SSLeay_add_ssl_algorithms();
196 /* FIXME: mod_ssl does this */
197 X509V3_add_standard_extensions();
202 * initialize the default context
205 ldap_pvt_tls_init_def_ctx( int is_server )
207 STACK_OF(X509_NAME) *calist;
209 char *ciphersuite = tls_opt_ciphersuite;
210 char *cacertfile = tls_opt_cacertfile;
211 char *cacertdir = tls_opt_cacertdir;
212 char *certfile = tls_opt_certfile;
213 char *keyfile = tls_opt_keyfile;
214 char *dhfile = tls_opt_dhfile;
216 #ifdef LDAP_R_COMPILE
217 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
220 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
221 /* minimum configuration not provided */
222 #ifdef LDAP_R_COMPILE
223 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
225 return LDAP_NOT_SUPPORTED;
229 /* This ASCII/EBCDIC handling is a real pain! */
231 ciphersuite = LDAP_STRDUP( ciphersuite );
232 __atoe( ciphersuite );
235 cacertfile = LDAP_STRDUP( cacertfile );
236 __atoe( cacertfile );
239 cacertdir = LDAP_STRDUP( cacertdir );
243 certfile = LDAP_STRDUP( certfile );
247 keyfile = LDAP_STRDUP( keyfile );
251 dhfile = LDAP_STRDUP( dhfile );
255 if ( tls_def_ctx == NULL ) {
257 tls_def_ctx = SSL_CTX_new( SSLv23_method() );
258 if ( tls_def_ctx == NULL ) {
259 Debug( LDAP_DEBUG_ANY,
260 "TLS: could not allocate default ctx (%lu).\n",
261 ERR_peek_error(),0,0);
266 SSL_CTX_set_session_id_context( tls_def_ctx,
267 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
269 if ( tls_opt_ciphersuite &&
270 !SSL_CTX_set_cipher_list( tls_def_ctx, ciphersuite ) )
272 Debug( LDAP_DEBUG_ANY,
273 "TLS: could not set cipher list %s.\n",
274 tls_opt_ciphersuite, 0, 0 );
280 if (tls_opt_cacertfile != NULL || tls_opt_cacertdir != NULL) {
281 if ( !SSL_CTX_load_verify_locations( tls_def_ctx,
282 cacertfile, cacertdir ) ||
283 !SSL_CTX_set_default_verify_paths( tls_def_ctx ) )
285 Debug( LDAP_DEBUG_ANY, "TLS: "
286 "could not load verify locations (file:`%s',dir:`%s').\n",
287 tls_opt_cacertfile ? tls_opt_cacertfile : "",
288 tls_opt_cacertdir ? tls_opt_cacertdir : "",
295 calist = get_ca_list( cacertfile, cacertdir );
297 Debug( LDAP_DEBUG_ANY, "TLS: "
298 "could not load client CA list (file:`%s',dir:`%s').\n",
299 tls_opt_cacertfile ? tls_opt_cacertfile : "",
300 tls_opt_cacertdir ? tls_opt_cacertdir : "",
307 SSL_CTX_set_client_CA_list( tls_def_ctx, calist );
310 if ( tls_opt_keyfile &&
311 !SSL_CTX_use_PrivateKey_file( tls_def_ctx,
312 keyfile, SSL_FILETYPE_PEM ) )
314 Debug( LDAP_DEBUG_ANY,
315 "TLS: could not use key file `%s'.\n",
316 tls_opt_keyfile,0,0);
322 if ( tls_opt_certfile &&
323 !SSL_CTX_use_certificate_file( tls_def_ctx,
324 certfile, SSL_FILETYPE_PEM ) )
326 Debug( LDAP_DEBUG_ANY,
327 "TLS: could not use certificate `%s'.\n",
328 tls_opt_certfile,0,0);
334 if ( ( tls_opt_certfile || tls_opt_keyfile ) &&
335 !SSL_CTX_check_private_key( tls_def_ctx ) )
337 Debug( LDAP_DEBUG_ANY,
338 "TLS: private key mismatch.\n",
345 if ( tls_opt_dhfile ) {
350 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
351 Debug( LDAP_DEBUG_ANY,
352 "TLS: could not use DH parameters file `%s'.\n",
358 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
359 p = LDAP_MALLOC( sizeof(dhplist) );
361 p->keylength = DH_size( dh ) * 8;
370 if ( tls_opt_trace ) {
371 SSL_CTX_set_info_callback( tls_def_ctx, tls_info_cb );
375 if ( tls_opt_require_cert ) {
377 if ( tls_opt_require_cert == LDAP_OPT_X_TLS_DEMAND ||
378 tls_opt_require_cert == LDAP_OPT_X_TLS_HARD ) {
379 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
383 SSL_CTX_set_verify( tls_def_ctx, i,
384 tls_opt_require_cert == LDAP_OPT_X_TLS_ALLOW ?
385 tls_verify_ok : tls_verify_cb );
386 SSL_CTX_set_tmp_rsa_callback( tls_def_ctx, tls_tmp_rsa_cb );
387 if ( tls_opt_dhfile ) {
388 SSL_CTX_set_tmp_dh_callback( tls_def_ctx, tls_tmp_dh_cb );
390 #ifdef HAVE_OPENSSL_CRL
391 if ( tls_opt_crlcheck ) {
392 X509_STORE *x509_s = SSL_CTX_get_cert_store( tls_def_ctx );
393 if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
394 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
395 } else if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
396 X509_STORE_set_flags( x509_s,
397 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
403 if ( rc == -1 && tls_def_ctx != NULL ) {
404 SSL_CTX_free( tls_def_ctx );
408 LDAP_FREE( ciphersuite );
409 LDAP_FREE( cacertfile );
410 LDAP_FREE( cacertdir );
411 LDAP_FREE( certfile );
412 LDAP_FREE( keyfile );
415 #ifdef LDAP_R_COMPILE
416 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
421 static STACK_OF(X509_NAME) *
422 get_ca_list( char * bundle, char * dir )
424 STACK_OF(X509_NAME) *ca_list = NULL;
427 ca_list = SSL_load_client_CA_file( bundle );
429 #if defined(HAVE_DIRENT_H) || defined(dirent)
434 ca_list = sk_X509_NAME_new_null();
437 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
439 sk_X509_NAME_free( ca_list );
448 alloc_handle( void *ctx_arg, int is_server )
454 ctx = (SSL_CTX *) ctx_arg;
456 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
460 ssl = SSL_new( ctx );
462 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
469 update_flags( Sockbuf *sb, SSL * ssl, int rc )
471 int err = SSL_get_error(ssl, rc);
473 sb->sb_trans_needs_read = 0;
474 sb->sb_trans_needs_write = 0;
476 if (err == SSL_ERROR_WANT_READ) {
477 sb->sb_trans_needs_read = 1;
480 } else if (err == SSL_ERROR_WANT_WRITE) {
481 sb->sb_trans_needs_write = 1;
484 } else if (err == SSL_ERROR_WANT_CONNECT) {
491 * TLS support for LBER Sockbufs
496 Sockbuf_IO_Desc *sbiod;
499 static BIO_METHOD sb_tls_bio_method;
502 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
507 assert( sbiod != NULL );
509 p = LBER_MALLOC( sizeof( *p ) );
516 bio = BIO_new( &sb_tls_bio_method );
517 bio->ptr = (void *)p;
518 SSL_set_bio( p->ssl, bio, bio );
519 sbiod->sbiod_pvt = p;
524 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
528 assert( sbiod != NULL );
529 assert( sbiod->sbiod_pvt != NULL );
531 p = (struct tls_data *)sbiod->sbiod_pvt;
533 LBER_FREE( sbiod->sbiod_pvt );
534 sbiod->sbiod_pvt = NULL;
539 sb_tls_close( Sockbuf_IO_Desc *sbiod )
543 assert( sbiod != NULL );
544 assert( sbiod->sbiod_pvt != NULL );
546 p = (struct tls_data *)sbiod->sbiod_pvt;
547 SSL_shutdown( p->ssl );
552 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
556 assert( sbiod != NULL );
557 assert( sbiod->sbiod_pvt != NULL );
559 p = (struct tls_data *)sbiod->sbiod_pvt;
561 if ( opt == LBER_SB_OPT_GET_SSL ) {
562 *((SSL **)arg) = p->ssl;
565 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
566 if( SSL_pending( p->ssl ) > 0 ) {
571 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
575 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
581 assert( sbiod != NULL );
582 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
584 p = (struct tls_data *)sbiod->sbiod_pvt;
586 ret = SSL_read( p->ssl, (char *)buf, len );
588 errno = WSAGetLastError();
590 err = SSL_get_error( p->ssl, ret );
591 if (err == SSL_ERROR_WANT_READ ) {
592 sbiod->sbiod_sb->sb_trans_needs_read = 1;
593 sock_errset(EWOULDBLOCK);
596 sbiod->sbiod_sb->sb_trans_needs_read = 0;
601 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
607 assert( sbiod != NULL );
608 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
610 p = (struct tls_data *)sbiod->sbiod_pvt;
612 ret = SSL_write( p->ssl, (char *)buf, len );
614 errno = WSAGetLastError();
616 err = SSL_get_error( p->ssl, ret );
617 if (err == SSL_ERROR_WANT_WRITE ) {
618 sbiod->sbiod_sb->sb_trans_needs_write = 1;
619 sock_errset(EWOULDBLOCK);
622 sbiod->sbiod_sb->sb_trans_needs_write = 0;
627 static Sockbuf_IO sb_tls_sbio =
629 sb_tls_setup, /* sbi_setup */
630 sb_tls_remove, /* sbi_remove */
631 sb_tls_ctrl, /* sbi_ctrl */
632 sb_tls_read, /* sbi_read */
633 sb_tls_write, /* sbi_write */
634 sb_tls_close /* sbi_close */
638 sb_tls_bio_create( BIO *b ) {
647 sb_tls_bio_destroy( BIO *b )
649 if ( b == NULL ) return 0;
651 b->ptr = NULL; /* sb_tls_remove() will free it */
658 sb_tls_bio_read( BIO *b, char *buf, int len )
663 if ( buf == NULL || len <= 0 ) return 0;
665 p = (struct tls_data *)b->ptr;
667 if ( p == NULL || p->sbiod == NULL ) {
671 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
673 BIO_clear_retry_flags( b );
675 int err = sock_errno();
676 if ( err == EAGAIN || err == EWOULDBLOCK ) {
677 BIO_set_retry_read( b );
685 sb_tls_bio_write( BIO *b, const char *buf, int len )
690 if ( buf == NULL || len <= 0 ) return 0;
692 p = (struct tls_data *)b->ptr;
694 if ( p == NULL || p->sbiod == NULL ) {
698 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
700 BIO_clear_retry_flags( b );
702 int err = sock_errno();
703 if ( err == EAGAIN || err == EWOULDBLOCK ) {
704 BIO_set_retry_write( b );
712 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
714 if ( cmd == BIO_CTRL_FLUSH ) {
715 /* The OpenSSL library needs this */
722 sb_tls_bio_gets( BIO *b, char *buf, int len )
728 sb_tls_bio_puts( BIO *b, const char *str )
730 return sb_tls_bio_write( b, str, strlen( str ) );
733 static BIO_METHOD sb_tls_bio_method =
735 ( 100 | 0x400 ), /* it's a source/sink BIO */
747 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
748 * a SSL_CTX * or NULL, in which case the default ctx is used.
752 * 0 - Success. Connection is ready for communication.
753 * <0 - Error. Can't create a TLS stream.
754 * >0 - Partial success.
755 * Do a select (using information from lber_pvt_sb_needs_{read,write}
760 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
762 Sockbuf *sb = conn->lconn_sb;
766 if ( HAS_TLS( sb ) ) {
767 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
770 struct ldapoptions *lo;
773 lo = &ld->ld_options;
774 ctx = lo->ldo_tls_ctx;
776 ssl = alloc_handle( ctx, 0 );
778 if ( ssl == NULL ) return -1;
781 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
782 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
784 ber_sockbuf_add_io( sb, &sb_tls_sbio,
785 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
789 lo->ldo_tls_ctx = ctx;
791 if ( lo->ldo_tls_connect_cb )
792 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
793 lo = LDAP_INT_GLOBAL_OPT();
794 if ( lo && lo->ldo_tls_connect_cb )
795 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
798 err = SSL_connect( ssl );
801 errno = WSAGetLastError();
805 if ( update_flags( sb, ssl, err )) {
809 if ((err = ERR_peek_error())) {
812 if ( ld->ld_error ) {
813 LDAP_FREE( ld->ld_error );
815 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
817 if ( ld->ld_error ) __etoa(ld->ld_error);
821 Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
823 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
824 LBER_SBIOD_LEVEL_TRANSPORT );
826 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
827 LBER_SBIOD_LEVEL_TRANSPORT );
836 * Call this to do a TLS accept on a sockbuf.
837 * Everything else is the same as with tls_connect.
840 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
845 if ( HAS_TLS( sb ) ) {
846 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
849 ssl = alloc_handle( ctx_arg, 1 );
850 if ( ssl == NULL ) return -1;
853 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
854 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
856 ber_sockbuf_add_io( sb, &sb_tls_sbio,
857 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
860 #ifdef LDAP_R_COMPILE
861 ldap_pvt_thread_mutex_lock( &tls_connect_mutex );
863 err = SSL_accept( ssl );
864 #ifdef LDAP_R_COMPILE
865 ldap_pvt_thread_mutex_unlock( &tls_connect_mutex );
869 errno = WSAGetLastError();
872 if ( update_flags( sb, ssl, err )) return 1;
874 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
877 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
878 LBER_SBIOD_LEVEL_TRANSPORT );
880 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
881 LBER_SBIOD_LEVEL_TRANSPORT );
890 ldap_pvt_tls_inplace ( Sockbuf *sb )
892 return HAS_TLS( sb ) ? 1 : 0;
896 ldap_tls_inplace( LDAP *ld )
900 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
901 sb = ld->ld_defconn->lconn_sb;
903 } else if ( ld->ld_sb ) {
910 return ldap_pvt_tls_inplace( sb );
914 tls_get_cert( SSL *s )
916 /* If peer cert was bad, treat as if no cert was given */
917 if (SSL_get_verify_result(s)) {
918 /* If we can send an alert, do so */
919 if (SSL_version(s) != SSL2_VERSION) {
920 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
924 return SSL_get_peer_certificate(s);
928 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
929 LDAPDN_rewrite_dummy *func, unsigned flags )
935 x = tls_get_cert((SSL *)s);
937 if (!x) return LDAP_INVALID_CREDENTIALS;
939 xn = X509_get_subject_name(x);
940 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
946 ldap_pvt_tls_get_peer_hostname( void *s )
953 x = tls_get_cert((SSL *)s);
956 xn = X509_get_subject_name(x);
958 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
964 p = LDAP_STRDUP(buf);
969 /* what kind of hostname were we given? */
975 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
977 int i, ret = LDAP_LOCAL_ERROR;
983 struct in6_addr addr;
988 if( ldap_int_hostname &&
989 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
991 name = ldap_int_hostname;
996 x = tls_get_cert((SSL *)s);
998 Debug( LDAP_DEBUG_ANY,
999 "TLS: unable to get peer certificate.\n",
1001 /* If this was a fatal condition, things would have
1002 * aborted long before now.
1004 return LDAP_SUCCESS;
1007 #ifdef LDAP_PF_INET6
1008 if (name[0] == '[' && strchr(name, ']')) {
1009 char *n2 = ldap_strdup(name+1);
1010 *strchr(n2, ']') = 2;
1011 if (inet_pton(AF_INET6, n2, &addr))
1016 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1017 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1020 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1023 STACK_OF(GENERAL_NAME) *alt;
1025 ex = X509_get_ext(x, i);
1026 alt = X509V3_EXT_d2i(ex);
1028 int n, len1 = 0, len2 = 0;
1029 char *domain = NULL;
1032 if (ntype == IS_DNS) {
1033 len1 = strlen(name);
1034 domain = strchr(name, '.');
1036 len2 = len1 - (domain-name);
1039 n = sk_GENERAL_NAME_num(alt);
1040 for (i=0; i<n; i++) {
1043 gn = sk_GENERAL_NAME_value(alt, i);
1044 if (gn->type == GEN_DNS) {
1045 if (ntype != IS_DNS) continue;
1047 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1048 sl = ASN1_STRING_length(gn->d.ia5);
1051 if (sl == 0) continue;
1053 /* Is this an exact match? */
1054 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1058 /* Is this a wildcard match? */
1059 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1060 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1065 } else if (gn->type == GEN_IPADD) {
1066 if (ntype == IS_DNS) continue;
1068 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1069 sl = ASN1_STRING_length(gn->d.ia5);
1071 #ifdef LDAP_PF_INET6
1072 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1076 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1079 if (!memcmp(sn, &addr, sl)) {
1085 GENERAL_NAMES_free(alt);
1086 if (i < n) { /* Found a match */
1092 if (ret != LDAP_SUCCESS) {
1097 xn = X509_get_subject_name(x);
1098 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1099 buf, sizeof(buf)) == -1)
1101 Debug( LDAP_DEBUG_ANY,
1102 "TLS: unable to get common name from peer certificate.\n",
1104 ret = LDAP_CONNECT_ERROR;
1105 if ( ld->ld_error ) {
1106 LDAP_FREE( ld->ld_error );
1108 ld->ld_error = LDAP_STRDUP(
1109 _("TLS: unable to get CN from peer certificate"));
1111 } else if (strcasecmp(name, buf) == 0 ) {
1114 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1115 char *domain = strchr(name, '.');
1121 dlen = sl - (domain-name);
1124 /* Is this a wildcard match? */
1125 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1131 if( ret == LDAP_LOCAL_ERROR ) {
1132 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1133 "common name in certificate (%s).\n",
1135 ret = LDAP_CONNECT_ERROR;
1136 if ( ld->ld_error ) {
1137 LDAP_FREE( ld->ld_error );
1139 ld->ld_error = LDAP_STRDUP(
1140 _("TLS: hostname does not match CN in peer certificate"));
1148 ldap_pvt_tls_get_peer_issuer( void *s )
1150 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1155 x = SSL_get_peer_certificate((SSL *)s);
1157 if (!x) return NULL;
1159 xn = X509_get_issuer_name(x);
1160 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1169 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1174 case LDAP_OPT_X_TLS_CACERTFILE:
1175 case LDAP_OPT_X_TLS_CACERTDIR:
1176 case LDAP_OPT_X_TLS_CERTFILE:
1177 case LDAP_OPT_X_TLS_KEYFILE:
1178 case LDAP_OPT_X_TLS_RANDOM_FILE:
1179 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1180 case LDAP_OPT_X_TLS_DHFILE:
1181 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1183 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1184 case LDAP_OPT_X_TLS:
1186 if ( strcasecmp( arg, "never" ) == 0 ) {
1187 i = LDAP_OPT_X_TLS_NEVER ;
1189 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1190 i = LDAP_OPT_X_TLS_DEMAND ;
1192 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1193 i = LDAP_OPT_X_TLS_ALLOW ;
1195 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1196 i = LDAP_OPT_X_TLS_TRY ;
1198 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1199 ( strcasecmp( arg, "on" ) == 0 ) ||
1200 ( strcasecmp( arg, "yes" ) == 0) ||
1201 ( strcasecmp( arg, "true" ) == 0 ) )
1203 i = LDAP_OPT_X_TLS_HARD ;
1207 return ldap_pvt_tls_set_option( ld, option, &i );
1210 #ifdef HAVE_OPENSSL_CRL
1211 case LDAP_OPT_X_TLS_CRLCHECK:
1213 if ( strcasecmp( arg, "none" ) == 0 ) {
1214 i = LDAP_OPT_X_TLS_CRL_NONE ;
1215 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1216 i = LDAP_OPT_X_TLS_CRL_PEER ;
1217 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1218 i = LDAP_OPT_X_TLS_CRL_ALL ;
1221 return ldap_pvt_tls_set_option( ld, option, &i );
1230 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1232 struct ldapoptions *lo;
1235 assert( LDAP_VALID( ld ) );
1237 if( !LDAP_VALID( ld ) ) {
1238 return LDAP_OPT_ERROR;
1241 lo = &ld->ld_options;
1244 /* Get pointer to global option structure */
1245 lo = LDAP_INT_GLOBAL_OPT();
1247 return LDAP_NO_MEMORY;
1252 case LDAP_OPT_X_TLS:
1253 *(int *)arg = lo->ldo_tls_mode;
1255 case LDAP_OPT_X_TLS_CTX:
1257 *(void **)arg = (void *) tls_def_ctx;
1259 *(void **)arg = lo->ldo_tls_ctx;
1262 case LDAP_OPT_X_TLS_CACERTFILE:
1263 *(char **)arg = tls_opt_cacertfile ?
1264 LDAP_STRDUP( tls_opt_cacertfile ) : NULL;
1266 case LDAP_OPT_X_TLS_CACERTDIR:
1267 *(char **)arg = tls_opt_cacertdir ?
1268 LDAP_STRDUP( tls_opt_cacertdir ) : NULL;
1270 case LDAP_OPT_X_TLS_CERTFILE:
1271 *(char **)arg = tls_opt_certfile ?
1272 LDAP_STRDUP( tls_opt_certfile ) : NULL;
1274 case LDAP_OPT_X_TLS_KEYFILE:
1275 *(char **)arg = tls_opt_keyfile ?
1276 LDAP_STRDUP( tls_opt_keyfile ) : NULL;
1278 case LDAP_OPT_X_TLS_DHFILE:
1279 *(char **)arg = tls_opt_dhfile ?
1280 LDAP_STRDUP( tls_opt_dhfile ) : NULL;
1282 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1283 *(int *)arg = tls_opt_require_cert;
1285 #ifdef HAVE_OPENSSL_CRL
1286 case LDAP_OPT_X_TLS_CRLCHECK:
1287 *(int *)arg = tls_opt_crlcheck;
1290 case LDAP_OPT_X_TLS_RANDOM_FILE:
1291 *(char **)arg = tls_opt_randfile ?
1292 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1294 case LDAP_OPT_X_TLS_SSL_CTX: {
1297 LDAPConn *conn = ld->ld_defconn;
1298 if ( conn != NULL ) {
1299 Sockbuf *sb = conn->lconn_sb;
1300 retval = ldap_pvt_tls_sb_ctx( sb );
1303 *(void **)arg = retval;
1306 case LDAP_OPT_X_TLS_CONNECT_CB:
1307 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1309 case LDAP_OPT_X_TLS_CONNECT_ARG:
1310 *(void **)arg = lo->ldo_tls_connect_arg;
1319 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1321 struct ldapoptions *lo;
1324 assert( LDAP_VALID( ld ) );
1326 if( !LDAP_VALID( ld ) ) {
1327 return LDAP_OPT_ERROR;
1330 lo = &ld->ld_options;
1333 /* Get pointer to global option structure */
1334 lo = LDAP_INT_GLOBAL_OPT();
1336 return LDAP_NO_MEMORY;
1341 case LDAP_OPT_X_TLS:
1342 switch( *(int *) arg ) {
1343 case LDAP_OPT_X_TLS_NEVER:
1344 case LDAP_OPT_X_TLS_DEMAND:
1345 case LDAP_OPT_X_TLS_ALLOW:
1346 case LDAP_OPT_X_TLS_TRY:
1347 case LDAP_OPT_X_TLS_HARD:
1349 lo->ldo_tls_mode = *(int *)arg;
1356 case LDAP_OPT_X_TLS_CTX:
1358 tls_def_ctx = (SSL_CTX *) arg;
1361 lo->ldo_tls_ctx = arg;
1364 case LDAP_OPT_X_TLS_CONNECT_CB:
1365 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1367 case LDAP_OPT_X_TLS_CONNECT_ARG:
1368 lo->ldo_tls_connect_arg = arg;
1377 case LDAP_OPT_X_TLS_CACERTFILE:
1378 if ( tls_opt_cacertfile ) LDAP_FREE( tls_opt_cacertfile );
1379 tls_opt_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1381 case LDAP_OPT_X_TLS_CACERTDIR:
1382 if ( tls_opt_cacertdir ) LDAP_FREE( tls_opt_cacertdir );
1383 tls_opt_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1385 case LDAP_OPT_X_TLS_CERTFILE:
1386 if ( tls_opt_certfile ) LDAP_FREE( tls_opt_certfile );
1387 tls_opt_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1389 case LDAP_OPT_X_TLS_KEYFILE:
1390 if ( tls_opt_keyfile ) LDAP_FREE( tls_opt_keyfile );
1391 tls_opt_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1393 case LDAP_OPT_X_TLS_DHFILE:
1394 if ( tls_opt_dhfile ) LDAP_FREE( tls_opt_dhfile );
1395 tls_opt_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1397 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1398 switch( *(int *) arg ) {
1399 case LDAP_OPT_X_TLS_NEVER:
1400 case LDAP_OPT_X_TLS_DEMAND:
1401 case LDAP_OPT_X_TLS_ALLOW:
1402 case LDAP_OPT_X_TLS_TRY:
1403 case LDAP_OPT_X_TLS_HARD:
1404 tls_opt_require_cert = * (int *) arg;
1408 #ifdef HAVE_OPENSSL_CRL
1409 case LDAP_OPT_X_TLS_CRLCHECK:
1410 switch( *(int *) arg ) {
1411 case LDAP_OPT_X_TLS_CRL_NONE:
1412 case LDAP_OPT_X_TLS_CRL_PEER:
1413 case LDAP_OPT_X_TLS_CRL_ALL:
1414 tls_opt_crlcheck = * (int *) arg;
1419 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1420 if ( tls_opt_ciphersuite ) LDAP_FREE( tls_opt_ciphersuite );
1421 tls_opt_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1423 case LDAP_OPT_X_TLS_RANDOM_FILE:
1424 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1425 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1434 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1436 Sockbuf *sb = conn->lconn_sb;
1441 host = srv->lud_host;
1443 host = conn->lconn_server->lud_host;
1446 /* avoid NULL host */
1447 if( host == NULL ) {
1451 (void) ldap_pvt_tls_init();
1454 * Fortunately, the lib uses blocking io...
1456 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1457 ld->ld_errno = LDAP_CONNECT_ERROR;
1458 return (ld->ld_errno);
1461 ssl = ldap_pvt_tls_sb_ctx( sb );
1462 assert( ssl != NULL );
1465 * compare host with name(s) in certificate
1467 if (tls_opt_require_cert != LDAP_OPT_X_TLS_NEVER) {
1468 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1469 if (ld->ld_errno != LDAP_SUCCESS) {
1470 return ld->ld_errno;
1474 return LDAP_SUCCESS;
1477 /* Derived from openssl/apps/s_cb.c */
1479 tls_info_cb( const SSL *ssl, int where, int ret )
1483 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1485 w = where & ~SSL_ST_MASK;
1486 if ( w & SSL_ST_CONNECT ) {
1488 } else if ( w & SSL_ST_ACCEPT ) {
1496 state = LDAP_STRDUP( state );
1500 if ( where & SSL_CB_LOOP ) {
1501 Debug( LDAP_DEBUG_TRACE,
1502 "TLS trace: %s:%s\n",
1505 } else if ( where & SSL_CB_ALERT ) {
1506 char *atype = (char *) SSL_alert_type_string_long( ret );
1507 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1508 op = ( where & SSL_CB_READ ) ? "read" : "write";
1511 atype = LDAP_STRDUP( atype );
1515 adesc = LDAP_STRDUP( adesc );
1519 Debug( LDAP_DEBUG_TRACE,
1520 "TLS trace: SSL3 alert %s:%s:%s\n",
1523 if ( atype ) LDAP_FREE( atype );
1524 if ( adesc ) LDAP_FREE( adesc );
1526 } else if ( where & SSL_CB_EXIT ) {
1528 Debug( LDAP_DEBUG_TRACE,
1529 "TLS trace: %s:failed in %s\n",
1531 } else if ( ret < 0 ) {
1532 Debug( LDAP_DEBUG_TRACE,
1533 "TLS trace: %s:error in %s\n",
1538 if ( state ) LDAP_FREE( state );
1543 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1552 char *certerr = NULL;
1554 cert = X509_STORE_CTX_get_current_cert( ctx );
1555 errnum = X509_STORE_CTX_get_error( ctx );
1556 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1559 * X509_get_*_name return pointers to the internal copies of
1560 * those things requested. So do not free them.
1562 subject = X509_get_subject_name( cert );
1563 issuer = X509_get_issuer_name( cert );
1564 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1565 sname = X509_NAME_oneline( subject, NULL, 0 );
1566 iname = X509_NAME_oneline( issuer, NULL, 0 );
1567 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1569 if ( sname ) __etoa( sname );
1570 if ( iname ) __etoa( iname );
1572 certerr = LDAP_STRDUP( certerr );
1576 Debug( LDAP_DEBUG_TRACE,
1577 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1579 sname ? sname : "-unknown-" );
1580 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1582 Debug( LDAP_DEBUG_ANY,
1583 "TLS certificate verification: Error, %s\n",
1587 CRYPTO_free ( sname );
1589 CRYPTO_free ( iname );
1591 if ( certerr ) LDAP_FREE( certerr );
1597 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1599 (void) tls_verify_cb( ok, ctx );
1603 /* Inspired by ERR_print_errors in OpenSSL */
1605 tls_report_error( void )
1612 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1613 ERR_error_string_n( l, buf, sizeof( buf ) );
1616 file = LDAP_STRDUP( file );
1617 __etoa( (char *)file );
1621 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1624 if ( file ) LDAP_FREE( (void *)file );
1630 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1634 /* FIXME: Pregenerate the key on startup */
1635 /* FIXME: Who frees the key? */
1636 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1639 Debug( LDAP_DEBUG_ANY,
1640 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1641 key_length, is_export ? "export" : "domestic", 0 );
1648 tls_seed_PRNG( const char *randfile )
1650 #ifndef URANDOM_DEVICE
1651 /* no /dev/urandom (or equiv) */
1653 char buffer[MAXPATHLEN];
1655 if (randfile == NULL) {
1656 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1657 * If $HOME is not set or buffer too small to hold the pathname,
1658 * an error occurs. - From RAND_file_name() man page.
1659 * The fact is that when $HOME is NULL, .rnd is used.
1661 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1663 } else if (RAND_egd(randfile) > 0) {
1668 if (randfile == NULL) {
1669 Debug( LDAP_DEBUG_ANY,
1670 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1675 total = RAND_load_file(randfile, -1);
1677 if (RAND_status() == 0) {
1678 Debug( LDAP_DEBUG_ANY,
1679 "TLS: PRNG not been seeded with enough data\n",
1684 /* assume if there was enough bits to seed that it's okay
1685 * to write derived bits to the file
1687 RAND_write_file(randfile);
1701 /* From the OpenSSL 0.9.7 distro */
1702 static const char dhpem512[] =
1703 "-----BEGIN DH PARAMETERS-----\n\
1704 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1705 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1706 -----END DH PARAMETERS-----\n";
1708 static const char dhpem1024[] =
1709 "-----BEGIN DH PARAMETERS-----\n\
1710 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1711 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1712 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1713 -----END DH PARAMETERS-----\n";
1715 static const char dhpem2048[] =
1716 "-----BEGIN DH PARAMETERS-----\n\
1717 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1718 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1719 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1720 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1721 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1722 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1723 -----END DH PARAMETERS-----\n";
1725 static const char dhpem4096[] =
1726 "-----BEGIN DH PARAMETERS-----\n\
1727 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1728 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1729 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1730 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1731 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1732 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1733 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1734 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1735 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1736 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1737 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1738 -----END DH PARAMETERS-----\n";
1740 static const struct dhinfo dhpem[] = {
1741 { 512, dhpem512, sizeof(dhpem512) },
1742 { 1024, dhpem1024, sizeof(dhpem1024) },
1743 { 2048, dhpem2048, sizeof(dhpem2048) },
1744 { 4096, dhpem4096, sizeof(dhpem4096) },
1749 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1751 struct dhplist *p = NULL;
1756 /* Do we have params of this length already? */
1757 #ifdef LDAP_R_COMPILE
1758 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1760 for ( p = dhparams; p; p=p->next ) {
1761 if ( p->keylength == key_length ) {
1762 #ifdef LDAP_R_COMPILE
1763 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1769 /* No - check for hardcoded params */
1771 for (i=0; dhpem[i].keylength; i++) {
1772 if ( dhpem[i].keylength == key_length ) {
1773 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1779 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1783 /* Generating on the fly is expensive/slow... */
1785 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1788 p = LDAP_MALLOC( sizeof(struct dhplist) );
1790 p->keylength = key_length;
1797 #ifdef LDAP_R_COMPILE
1798 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1805 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1810 if (HAS_TLS( sb )) {
1811 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1820 ldap_pvt_tls_get_strength( void *s )
1825 c = SSL_get_current_cipher((SSL *)s);
1826 return SSL_CIPHER_get_bits(c, NULL);
1834 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1841 x = SSL_get_certificate((SSL *)s);
1843 if (!x) return LDAP_INVALID_CREDENTIALS;
1845 xn = X509_get_subject_name(x);
1846 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1849 return LDAP_NOT_SUPPORTED;
1854 ldap_start_tls( LDAP *ld,
1855 LDAPControl **serverctrls,
1856 LDAPControl **clientctrls,
1859 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1860 NULL, serverctrls, clientctrls, msgidp );
1864 ldap_install_tls( LDAP *ld )
1867 return LDAP_NOT_SUPPORTED;
1869 if ( ldap_tls_inplace( ld ) ) {
1870 return LDAP_LOCAL_ERROR;
1873 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1878 ldap_start_tls_s ( LDAP *ld,
1879 LDAPControl **serverctrls,
1880 LDAPControl **clientctrls )
1883 return LDAP_NOT_SUPPORTED;
1886 char *rspoid = NULL;
1887 struct berval *rspdata = NULL;
1889 /* XXYYZ: this initiates operation only on default connection! */
1891 if ( ldap_tls_inplace( ld ) ) {
1892 return LDAP_LOCAL_ERROR;
1895 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1896 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1898 if ( rspoid != NULL ) {
1902 if ( rspdata != NULL ) {
1903 ber_bvfree( rspdata );
1906 if ( rc == LDAP_SUCCESS ) {
1907 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );