1 /* tls.c - Handle tls/ssl using SSLeay or OpenSSL. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2005 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_dhparamdir = 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;
62 static int tls_opt_dhparamdirlen;
64 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
65 (void *)&sb_tls_sbio )
67 static void tls_report_error( void );
69 static void tls_info_cb( const SSL *ssl, int where, int ret );
70 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
71 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
72 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
73 static STACK_OF(X509_NAME) * get_ca_list( char * bundle, char * dir );
75 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
77 static SSL_CTX *tls_def_ctx = NULL;
79 static int tls_seed_PRNG( const char *randfile );
83 * provide mutexes for the SSLeay library.
85 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
87 static void tls_locking_cb( int mode, int type, const char *file, int line )
89 if ( mode & CRYPTO_LOCK ) {
90 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
92 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
97 * an extra mutex for the default ctx.
100 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
102 static void tls_init_threads( void )
106 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
107 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
109 CRYPTO_set_locking_callback( tls_locking_cb );
110 /* FIXME: the thread id should be added somehow... */
112 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
114 #endif /* LDAP_R_COMPILE */
117 * Tear down the TLS subsystem. Should only be called once.
120 ldap_pvt_tls_destroy( void )
122 SSL_CTX_free(tls_def_ctx);
129 if ( tls_opt_certfile ) {
130 LDAP_FREE( tls_opt_certfile );
131 tls_opt_certfile = NULL;
133 if ( tls_opt_keyfile ) {
134 LDAP_FREE( tls_opt_keyfile );
135 tls_opt_keyfile = NULL;
137 if ( tls_opt_dhparamdir ) {
138 LDAP_FREE( tls_opt_dhparamdir );
139 tls_opt_dhparamdir = NULL;
141 if ( tls_opt_cacertfile ) {
142 LDAP_FREE( tls_opt_cacertfile );
143 tls_opt_cacertfile = NULL;
145 if ( tls_opt_cacertdir ) {
146 LDAP_FREE( tls_opt_cacertdir );
147 tls_opt_cacertdir = NULL;
149 if ( tls_opt_ciphersuite ) {
150 LDAP_FREE( tls_opt_ciphersuite );
151 tls_opt_ciphersuite = NULL;
153 if ( tls_opt_randfile ) {
154 LDAP_FREE( tls_opt_randfile );
155 tls_opt_randfile = NULL;
160 * Initialize TLS subsystem. Should be called only once.
163 ldap_pvt_tls_init( void )
165 static int tls_initialized = 0;
167 if ( tls_initialized++ ) return 0;
171 char *file = LDAP_STRDUP( tls_opt_randfile );
172 if ( file ) __atoe( file );
173 (void) tls_seed_PRNG( file );
177 (void) tls_seed_PRNG( tls_opt_randfile );
180 #ifdef LDAP_R_COMPILE
184 SSL_load_error_strings();
185 SSLeay_add_ssl_algorithms();
187 /* FIXME: mod_ssl does this */
188 X509V3_add_standard_extensions();
193 * initialize the default context
196 ldap_pvt_tls_init_def_ctx( void )
198 STACK_OF(X509_NAME) *calist;
200 char *ciphersuite = tls_opt_ciphersuite;
201 char *cacertfile = tls_opt_cacertfile;
202 char *cacertdir = tls_opt_cacertdir;
203 char *certfile = tls_opt_certfile;
204 char *keyfile = tls_opt_keyfile;
206 #ifdef LDAP_R_COMPILE
207 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
210 if ( !certfile && !keyfile && !cacertfile && !cacertdir ) {
211 /* minimum configuration not provided */
212 return LDAP_NOT_SUPPORTED;
216 /* This ASCII/EBCDIC handling is a real pain! */
218 ciphersuite = LDAP_STRDUP( ciphersuite );
219 __atoe( ciphersuite );
222 cacertfile = LDAP_STRDUP( cacertfile );
223 __atoe( cacertfile );
226 cacertdir = LDAP_STRDUP( cacertdir );
230 certfile = LDAP_STRDUP( certfile );
234 keyfile = LDAP_STRDUP( keyfile );
238 if ( tls_def_ctx == NULL ) {
240 tls_def_ctx = SSL_CTX_new( SSLv23_method() );
241 if ( tls_def_ctx == NULL ) {
242 Debug( LDAP_DEBUG_ANY,
243 "TLS: could not allocate default ctx (%lu).\n",
244 ERR_peek_error(),0,0);
249 SSL_CTX_set_session_id_context( tls_def_ctx,
250 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
252 if ( tls_opt_ciphersuite &&
253 !SSL_CTX_set_cipher_list( tls_def_ctx, ciphersuite ) )
255 Debug( LDAP_DEBUG_ANY,
256 "TLS: could not set cipher list %s.\n",
257 tls_opt_ciphersuite, 0, 0 );
263 if (tls_opt_cacertfile != NULL || tls_opt_cacertdir != NULL) {
264 if ( !SSL_CTX_load_verify_locations( tls_def_ctx,
265 cacertfile, cacertdir ) ||
266 !SSL_CTX_set_default_verify_paths( tls_def_ctx ) )
268 Debug( LDAP_DEBUG_ANY, "TLS: "
269 "could not load verify locations (file:`%s',dir:`%s').\n",
270 tls_opt_cacertfile ? tls_opt_cacertfile : "",
271 tls_opt_cacertdir ? tls_opt_cacertdir : "",
278 calist = get_ca_list( cacertfile, cacertdir );
280 Debug( LDAP_DEBUG_ANY, "TLS: "
281 "could not load client CA list (file:`%s',dir:`%s').\n",
282 tls_opt_cacertfile ? tls_opt_cacertfile : "",
283 tls_opt_cacertdir ? tls_opt_cacertdir : "",
290 SSL_CTX_set_client_CA_list( tls_def_ctx, calist );
293 if ( tls_opt_keyfile &&
294 !SSL_CTX_use_PrivateKey_file( tls_def_ctx,
295 keyfile, SSL_FILETYPE_PEM ) )
297 Debug( LDAP_DEBUG_ANY,
298 "TLS: could not use key file `%s'.\n",
299 tls_opt_keyfile,0,0);
305 if ( tls_opt_certfile &&
306 !SSL_CTX_use_certificate_file( tls_def_ctx,
307 certfile, SSL_FILETYPE_PEM ) )
309 Debug( LDAP_DEBUG_ANY,
310 "TLS: could not use certificate `%s'.\n",
311 tls_opt_certfile,0,0);
317 if ( ( tls_opt_certfile || tls_opt_keyfile ) &&
318 !SSL_CTX_check_private_key( tls_def_ctx ) )
320 Debug( LDAP_DEBUG_ANY,
321 "TLS: private key mismatch.\n",
328 if ( tls_opt_trace ) {
329 SSL_CTX_set_info_callback( tls_def_ctx, tls_info_cb );
333 if ( tls_opt_require_cert ) {
335 if ( tls_opt_require_cert == LDAP_OPT_X_TLS_DEMAND ||
336 tls_opt_require_cert == LDAP_OPT_X_TLS_HARD ) {
337 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
341 SSL_CTX_set_verify( tls_def_ctx, i,
342 tls_opt_require_cert == LDAP_OPT_X_TLS_ALLOW ?
343 tls_verify_ok : tls_verify_cb );
344 SSL_CTX_set_tmp_rsa_callback( tls_def_ctx, tls_tmp_rsa_cb );
345 SSL_CTX_set_tmp_dh_callback( tls_def_ctx, tls_tmp_dh_cb );
346 #ifdef HAVE_OPENSSL_CRL
347 if ( tls_opt_crlcheck ) {
348 X509_STORE *x509_s = SSL_CTX_get_cert_store( tls_def_ctx );
349 if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
350 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
351 } else if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
352 X509_STORE_set_flags( x509_s,
353 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
359 if ( rc == -1 && tls_def_ctx != NULL ) {
360 SSL_CTX_free( tls_def_ctx );
364 LDAP_FREE( ciphersuite );
365 LDAP_FREE( cacertfile );
366 LDAP_FREE( cacertdir );
367 LDAP_FREE( certfile );
368 LDAP_FREE( keyfile );
370 #ifdef LDAP_R_COMPILE
371 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
376 static STACK_OF(X509_NAME) *
377 get_ca_list( char * bundle, char * dir )
379 STACK_OF(X509_NAME) *ca_list = NULL;
382 ca_list = SSL_load_client_CA_file( bundle );
384 #if defined(HAVE_DIRENT_H) || defined(dirent)
389 ca_list = sk_X509_NAME_new_null();
392 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
394 sk_X509_NAME_free( ca_list );
403 alloc_handle( void *ctx_arg )
409 ctx = (SSL_CTX *) ctx_arg;
411 if ( ldap_pvt_tls_init_def_ctx() < 0 ) return NULL;
415 ssl = SSL_new( ctx );
417 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
424 update_flags( Sockbuf *sb, SSL * ssl, int rc )
426 int err = SSL_get_error(ssl, rc);
428 sb->sb_trans_needs_read = 0;
429 sb->sb_trans_needs_write = 0;
431 if (err == SSL_ERROR_WANT_READ) {
432 sb->sb_trans_needs_read = 1;
435 } else if (err == SSL_ERROR_WANT_WRITE) {
436 sb->sb_trans_needs_write = 1;
439 } else if (err == SSL_ERROR_WANT_CONNECT) {
446 * TLS support for LBER Sockbufs
451 Sockbuf_IO_Desc *sbiod;
454 static BIO_METHOD sb_tls_bio_method;
457 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
462 assert( sbiod != NULL );
464 p = LBER_MALLOC( sizeof( *p ) );
471 bio = BIO_new( &sb_tls_bio_method );
472 bio->ptr = (void *)p;
473 SSL_set_bio( p->ssl, bio, bio );
474 sbiod->sbiod_pvt = p;
479 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
483 assert( sbiod != NULL );
484 assert( sbiod->sbiod_pvt != NULL );
486 p = (struct tls_data *)sbiod->sbiod_pvt;
488 LBER_FREE( sbiod->sbiod_pvt );
489 sbiod->sbiod_pvt = NULL;
494 sb_tls_close( Sockbuf_IO_Desc *sbiod )
498 assert( sbiod != NULL );
499 assert( sbiod->sbiod_pvt != NULL );
501 p = (struct tls_data *)sbiod->sbiod_pvt;
502 SSL_shutdown( p->ssl );
507 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
511 assert( sbiod != NULL );
512 assert( sbiod->sbiod_pvt != NULL );
514 p = (struct tls_data *)sbiod->sbiod_pvt;
516 if ( opt == LBER_SB_OPT_GET_SSL ) {
517 *((SSL **)arg) = p->ssl;
520 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
521 if( SSL_pending( p->ssl ) > 0 ) {
526 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
530 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
536 assert( sbiod != NULL );
537 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
539 p = (struct tls_data *)sbiod->sbiod_pvt;
541 ret = SSL_read( p->ssl, (char *)buf, len );
543 errno = WSAGetLastError();
545 err = SSL_get_error( p->ssl, ret );
546 if (err == SSL_ERROR_WANT_READ ) {
547 sbiod->sbiod_sb->sb_trans_needs_read = 1;
551 sbiod->sbiod_sb->sb_trans_needs_read = 0;
556 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
562 assert( sbiod != NULL );
563 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
565 p = (struct tls_data *)sbiod->sbiod_pvt;
567 ret = SSL_write( p->ssl, (char *)buf, len );
569 errno = WSAGetLastError();
571 err = SSL_get_error( p->ssl, ret );
572 if (err == SSL_ERROR_WANT_WRITE ) {
573 sbiod->sbiod_sb->sb_trans_needs_write = 1;
577 sbiod->sbiod_sb->sb_trans_needs_write = 0;
582 static Sockbuf_IO sb_tls_sbio =
584 sb_tls_setup, /* sbi_setup */
585 sb_tls_remove, /* sbi_remove */
586 sb_tls_ctrl, /* sbi_ctrl */
587 sb_tls_read, /* sbi_read */
588 sb_tls_write, /* sbi_write */
589 sb_tls_close /* sbi_close */
593 sb_tls_bio_create( BIO *b ) {
602 sb_tls_bio_destroy( BIO *b )
604 if ( b == NULL ) return 0;
606 b->ptr = NULL; /* sb_tls_remove() will free it */
613 sb_tls_bio_read( BIO *b, char *buf, int len )
618 if ( buf == NULL || len <= 0 ) return 0;
620 p = (struct tls_data *)b->ptr;
622 if ( p == NULL || p->sbiod == NULL ) {
626 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
628 BIO_clear_retry_flags( b );
631 if ( err == EAGAIN || err == EWOULDBLOCK ) {
632 BIO_set_retry_read( b );
640 sb_tls_bio_write( BIO *b, const char *buf, int len )
645 if ( buf == NULL || len <= 0 ) return 0;
647 p = (struct tls_data *)b->ptr;
649 if ( p == NULL || p->sbiod == NULL ) {
653 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
655 BIO_clear_retry_flags( b );
658 if ( err == EAGAIN || err == EWOULDBLOCK ) {
659 BIO_set_retry_write( b );
667 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
669 if ( cmd == BIO_CTRL_FLUSH ) {
670 /* The OpenSSL library needs this */
677 sb_tls_bio_gets( BIO *b, char *buf, int len )
683 sb_tls_bio_puts( BIO *b, const char *str )
685 return sb_tls_bio_write( b, str, strlen( str ) );
688 static BIO_METHOD sb_tls_bio_method =
690 ( 100 | 0x400 ), /* it's a source/sink BIO */
702 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
703 * a SSL_CTX * or NULL, in which case the default ctx is used.
707 * 0 - Success. Connection is ready for communication.
708 * <0 - Error. Can't create a TLS stream.
709 * >0 - Partial success.
710 * Do a select (using information from lber_pvt_sb_needs_{read,write}
715 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
717 Sockbuf *sb = conn->lconn_sb;
721 if ( HAS_TLS( sb ) ) {
722 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
725 struct ldapoptions *lo;
726 void *ctx = ld->ld_defconn
727 ? ld->ld_defconn->lconn_tls_ctx : NULL;
729 ssl = alloc_handle( ctx );
731 if ( ssl == NULL ) return -1;
734 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
735 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
737 ber_sockbuf_add_io( sb, &sb_tls_sbio,
738 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
742 conn->lconn_tls_ctx = tls_def_ctx;
744 lo = &ld->ld_options;
745 if ( lo->ldo_tls_connect_cb )
746 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
747 lo = LDAP_INT_GLOBAL_OPT();
748 if ( lo && lo->ldo_tls_connect_cb )
749 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
752 err = SSL_connect( ssl );
755 errno = WSAGetLastError();
759 if ( update_flags( sb, ssl, err )) {
763 if ((err = ERR_peek_error())) {
766 if ( ld->ld_error ) {
767 LDAP_FREE( ld->ld_error );
769 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
771 if ( ld->ld_error ) __etoa(ld->ld_error);
775 Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
777 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
778 LBER_SBIOD_LEVEL_TRANSPORT );
780 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
781 LBER_SBIOD_LEVEL_TRANSPORT );
790 * Call this to do a TLS accept on a sockbuf.
791 * Everything else is the same as with tls_connect.
794 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
799 if ( HAS_TLS( sb ) ) {
800 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
803 ssl = alloc_handle( ctx_arg );
804 if ( ssl == NULL ) return -1;
807 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
808 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
810 ber_sockbuf_add_io( sb, &sb_tls_sbio,
811 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
814 err = SSL_accept( ssl );
817 errno = WSAGetLastError();
820 if ( update_flags( sb, ssl, err )) return 1;
822 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
825 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
826 LBER_SBIOD_LEVEL_TRANSPORT );
828 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
829 LBER_SBIOD_LEVEL_TRANSPORT );
838 ldap_pvt_tls_inplace ( Sockbuf *sb )
840 return HAS_TLS( sb ) ? 1 : 0;
844 ldap_tls_inplace( LDAP *ld )
848 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
849 sb = ld->ld_defconn->lconn_sb;
851 } else if ( ld->ld_sb ) {
858 return ldap_pvt_tls_inplace( sb );
862 tls_get_cert( SSL *s )
864 /* If peer cert was bad, treat as if no cert was given */
865 if (SSL_get_verify_result(s)) {
866 /* If we can send an alert, do so */
867 if (SSL_version(s) != SSL2_VERSION) {
868 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
872 return SSL_get_peer_certificate(s);
876 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
877 LDAPDN_rewrite_dummy *func, unsigned flags )
883 x = tls_get_cert((SSL *)s);
885 if (!x) return LDAP_INVALID_CREDENTIALS;
887 xn = X509_get_subject_name(x);
888 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
894 ldap_pvt_tls_get_peer_hostname( void *s )
901 x = tls_get_cert((SSL *)s);
904 xn = X509_get_subject_name(x);
906 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
912 p = LDAP_STRDUP(buf);
917 /* what kind of hostname were we given? */
923 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
925 int i, ret = LDAP_LOCAL_ERROR;
931 struct in6_addr addr;
936 if( ldap_int_hostname &&
937 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
939 name = ldap_int_hostname;
944 x = tls_get_cert((SSL *)s);
946 Debug( LDAP_DEBUG_ANY,
947 "TLS: unable to get peer certificate.\n",
949 /* If this was a fatal condition, things would have
950 * aborted long before now.
956 if (name[0] == '[' && strchr(name, ']')) {
957 char *n2 = ldap_strdup(name+1);
958 *strchr(n2, ']') = 2;
959 if (inet_pton(AF_INET6, n2, &addr))
964 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
965 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
968 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
971 STACK_OF(GENERAL_NAME) *alt;
973 ex = X509_get_ext(x, i);
974 alt = X509V3_EXT_d2i(ex);
976 int n, len1 = 0, len2 = 0;
980 if (ntype == IS_DNS) {
982 domain = strchr(name, '.');
984 len2 = len1 - (domain-name);
987 n = sk_GENERAL_NAME_num(alt);
988 for (i=0; i<n; i++) {
991 gn = sk_GENERAL_NAME_value(alt, i);
992 if (gn->type == GEN_DNS) {
993 if (ntype != IS_DNS) continue;
995 sn = (char *) ASN1_STRING_data(gn->d.ia5);
996 sl = ASN1_STRING_length(gn->d.ia5);
999 if (sl == 0) continue;
1001 /* Is this an exact match? */
1002 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1006 /* Is this a wildcard match? */
1007 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1008 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1013 } else if (gn->type == GEN_IPADD) {
1014 if (ntype == IS_DNS) continue;
1016 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1017 sl = ASN1_STRING_length(gn->d.ia5);
1019 #ifdef LDAP_PF_INET6
1020 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1024 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1027 if (!memcmp(sn, &addr, sl)) {
1033 GENERAL_NAMES_free(alt);
1034 if (i < n) { /* Found a match */
1040 if (ret != LDAP_SUCCESS) {
1045 xn = X509_get_subject_name(x);
1046 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1047 buf, sizeof(buf)) == -1)
1049 Debug( LDAP_DEBUG_ANY,
1050 "TLS: unable to get common name from peer certificate.\n",
1052 ret = LDAP_CONNECT_ERROR;
1053 if ( ld->ld_error ) {
1054 LDAP_FREE( ld->ld_error );
1056 ld->ld_error = LDAP_STRDUP(
1057 _("TLS: unable to get CN from peer certificate"));
1059 } else if (strcasecmp(name, buf) == 0 ) {
1062 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1063 char *domain = strchr(name, '.');
1069 dlen = sl - (domain-name);
1072 /* Is this a wildcard match? */
1073 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1079 if( ret == LDAP_LOCAL_ERROR ) {
1080 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1081 "common name in certificate (%s).\n",
1083 ret = LDAP_CONNECT_ERROR;
1084 if ( ld->ld_error ) {
1085 LDAP_FREE( ld->ld_error );
1087 ld->ld_error = LDAP_STRDUP(
1088 _("TLS: hostname does not match CN in peer certificate"));
1096 ldap_pvt_tls_get_peer_issuer( void *s )
1098 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1103 x = SSL_get_peer_certificate((SSL *)s);
1105 if (!x) return NULL;
1107 xn = X509_get_issuer_name(x);
1108 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1117 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1122 case LDAP_OPT_X_TLS_CACERTFILE:
1123 case LDAP_OPT_X_TLS_CACERTDIR:
1124 case LDAP_OPT_X_TLS_CERTFILE:
1125 case LDAP_OPT_X_TLS_KEYFILE:
1126 case LDAP_OPT_X_TLS_RANDOM_FILE:
1127 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1128 case LDAP_OPT_X_TLS_DHPARAMDIR:
1129 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1131 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1132 case LDAP_OPT_X_TLS:
1134 if ( strcasecmp( arg, "never" ) == 0 ) {
1135 i = LDAP_OPT_X_TLS_NEVER ;
1137 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1138 i = LDAP_OPT_X_TLS_DEMAND ;
1140 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1141 i = LDAP_OPT_X_TLS_ALLOW ;
1143 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1144 i = LDAP_OPT_X_TLS_TRY ;
1146 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1147 ( strcasecmp( arg, "on" ) == 0 ) ||
1148 ( strcasecmp( arg, "yes" ) == 0) ||
1149 ( strcasecmp( arg, "true" ) == 0 ) )
1151 i = LDAP_OPT_X_TLS_HARD ;
1155 return ldap_pvt_tls_set_option( ld, option, &i );
1158 #ifdef HAVE_OPENSSL_CRL
1159 case LDAP_OPT_X_TLS_CRLCHECK:
1161 if ( strcasecmp( arg, "none" ) == 0 ) {
1162 i = LDAP_OPT_X_TLS_CRL_NONE ;
1163 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1164 i = LDAP_OPT_X_TLS_CRL_PEER ;
1165 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1166 i = LDAP_OPT_X_TLS_CRL_ALL ;
1169 return ldap_pvt_tls_set_option( ld, option, &i );
1178 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1180 struct ldapoptions *lo;
1183 assert( LDAP_VALID( ld ) );
1185 if( !LDAP_VALID( ld ) ) {
1186 return LDAP_OPT_ERROR;
1189 lo = &ld->ld_options;
1192 /* Get pointer to global option structure */
1193 lo = LDAP_INT_GLOBAL_OPT();
1195 return LDAP_NO_MEMORY;
1200 case LDAP_OPT_X_TLS:
1201 *(int *)arg = lo->ldo_tls_mode;
1203 case LDAP_OPT_X_TLS_CTX:
1205 *(void **)arg = (void *) tls_def_ctx;
1207 *(void **)arg = ld->ld_defconn->lconn_tls_ctx;
1210 case LDAP_OPT_X_TLS_CACERTFILE:
1211 *(char **)arg = tls_opt_cacertfile ?
1212 LDAP_STRDUP( tls_opt_cacertfile ) : NULL;
1214 case LDAP_OPT_X_TLS_CACERTDIR:
1215 *(char **)arg = tls_opt_cacertdir ?
1216 LDAP_STRDUP( tls_opt_cacertdir ) : NULL;
1218 case LDAP_OPT_X_TLS_CERTFILE:
1219 *(char **)arg = tls_opt_certfile ?
1220 LDAP_STRDUP( tls_opt_certfile ) : NULL;
1222 case LDAP_OPT_X_TLS_KEYFILE:
1223 *(char **)arg = tls_opt_keyfile ?
1224 LDAP_STRDUP( tls_opt_keyfile ) : NULL;
1226 case LDAP_OPT_X_TLS_DHPARAMDIR:
1227 *(char **)arg = tls_opt_dhparamdir ?
1228 LDAP_STRDUP( tls_opt_dhparamdir ) : NULL;
1230 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1231 *(int *)arg = tls_opt_require_cert;
1233 #ifdef HAVE_OPENSSL_CRL
1234 case LDAP_OPT_X_TLS_CRLCHECK:
1235 *(int *)arg = tls_opt_crlcheck;
1238 case LDAP_OPT_X_TLS_RANDOM_FILE:
1239 *(char **)arg = tls_opt_randfile ?
1240 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1242 case LDAP_OPT_X_TLS_SSL_CTX: {
1245 LDAPConn *conn = ld->ld_defconn;
1246 if ( conn != NULL ) {
1247 Sockbuf *sb = conn->lconn_sb;
1248 retval = ldap_pvt_tls_sb_ctx( sb );
1251 *(void **)arg = retval;
1254 case LDAP_OPT_X_TLS_CONNECT_CB:
1255 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1257 case LDAP_OPT_X_TLS_CONNECT_ARG:
1258 *(void **)arg = lo->ldo_tls_connect_arg;
1267 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1269 struct ldapoptions *lo;
1272 assert( LDAP_VALID( ld ) );
1274 if( !LDAP_VALID( ld ) ) {
1275 return LDAP_OPT_ERROR;
1278 lo = &ld->ld_options;
1281 /* Get pointer to global option structure */
1282 lo = LDAP_INT_GLOBAL_OPT();
1284 return LDAP_NO_MEMORY;
1289 case LDAP_OPT_X_TLS:
1290 switch( *(int *) arg ) {
1291 case LDAP_OPT_X_TLS_NEVER:
1292 case LDAP_OPT_X_TLS_DEMAND:
1293 case LDAP_OPT_X_TLS_ALLOW:
1294 case LDAP_OPT_X_TLS_TRY:
1295 case LDAP_OPT_X_TLS_HARD:
1297 lo->ldo_tls_mode = *(int *)arg;
1304 case LDAP_OPT_X_TLS_CTX:
1306 tls_def_ctx = (SSL_CTX *) arg;
1309 ld->ld_defconn->lconn_tls_ctx = arg;
1312 case LDAP_OPT_X_TLS_CONNECT_CB:
1313 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1315 case LDAP_OPT_X_TLS_CONNECT_ARG:
1316 lo->ldo_tls_connect_arg = arg;
1325 case LDAP_OPT_X_TLS_CACERTFILE:
1326 if ( tls_opt_cacertfile ) LDAP_FREE( tls_opt_cacertfile );
1327 tls_opt_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1329 case LDAP_OPT_X_TLS_CACERTDIR:
1330 if ( tls_opt_cacertdir ) LDAP_FREE( tls_opt_cacertdir );
1331 tls_opt_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1333 case LDAP_OPT_X_TLS_CERTFILE:
1334 if ( tls_opt_certfile ) LDAP_FREE( tls_opt_certfile );
1335 tls_opt_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1337 case LDAP_OPT_X_TLS_KEYFILE:
1338 if ( tls_opt_keyfile ) LDAP_FREE( tls_opt_keyfile );
1339 tls_opt_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1341 case LDAP_OPT_X_TLS_DHPARAMDIR:
1342 if ( tls_opt_dhparamdir ) LDAP_FREE( tls_opt_dhparamdir );
1343 tls_opt_dhparamdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1344 if ( tls_opt_dhparamdir )
1345 tls_opt_dhparamdirlen = strlen( tls_opt_dhparamdir );
1347 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1348 switch( *(int *) arg ) {
1349 case LDAP_OPT_X_TLS_NEVER:
1350 case LDAP_OPT_X_TLS_DEMAND:
1351 case LDAP_OPT_X_TLS_ALLOW:
1352 case LDAP_OPT_X_TLS_TRY:
1353 case LDAP_OPT_X_TLS_HARD:
1354 tls_opt_require_cert = * (int *) arg;
1358 #ifdef HAVE_OPENSSL_CRL
1359 case LDAP_OPT_X_TLS_CRLCHECK:
1360 switch( *(int *) arg ) {
1361 case LDAP_OPT_X_TLS_CRL_NONE:
1362 case LDAP_OPT_X_TLS_CRL_PEER:
1363 case LDAP_OPT_X_TLS_CRL_ALL:
1364 tls_opt_crlcheck = * (int *) arg;
1369 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1370 if ( tls_opt_ciphersuite ) LDAP_FREE( tls_opt_ciphersuite );
1371 tls_opt_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1373 case LDAP_OPT_X_TLS_RANDOM_FILE:
1374 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1375 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1384 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1386 Sockbuf *sb = conn->lconn_sb;
1391 host = srv->lud_host;
1393 host = conn->lconn_server->lud_host;
1396 /* avoid NULL host */
1397 if( host == NULL ) {
1401 (void) ldap_pvt_tls_init();
1404 * Fortunately, the lib uses blocking io...
1406 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1407 ld->ld_errno = LDAP_CONNECT_ERROR;
1408 return (ld->ld_errno);
1411 ssl = ldap_pvt_tls_sb_ctx( sb );
1412 assert( ssl != NULL );
1415 * compare host with name(s) in certificate
1417 if (tls_opt_require_cert != LDAP_OPT_X_TLS_NEVER) {
1418 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1419 if (ld->ld_errno != LDAP_SUCCESS) {
1420 return ld->ld_errno;
1424 return LDAP_SUCCESS;
1427 /* Derived from openssl/apps/s_cb.c */
1429 tls_info_cb( const SSL *ssl, int where, int ret )
1433 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1435 w = where & ~SSL_ST_MASK;
1436 if ( w & SSL_ST_CONNECT ) {
1438 } else if ( w & SSL_ST_ACCEPT ) {
1446 state = LDAP_STRDUP( state );
1450 if ( where & SSL_CB_LOOP ) {
1451 Debug( LDAP_DEBUG_TRACE,
1452 "TLS trace: %s:%s\n",
1455 } else if ( where & SSL_CB_ALERT ) {
1456 char *atype = (char *) SSL_alert_type_string_long( ret );
1457 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1458 op = ( where & SSL_CB_READ ) ? "read" : "write";
1461 atype = LDAP_STRDUP( atype );
1465 adesc = LDAP_STRDUP( adesc );
1469 Debug( LDAP_DEBUG_TRACE,
1470 "TLS trace: SSL3 alert %s:%s:%s\n",
1473 if ( atype ) LDAP_FREE( atype );
1474 if ( adesc ) LDAP_FREE( adesc );
1476 } else if ( where & SSL_CB_EXIT ) {
1478 Debug( LDAP_DEBUG_TRACE,
1479 "TLS trace: %s:failed in %s\n",
1481 } else if ( ret < 0 ) {
1482 Debug( LDAP_DEBUG_TRACE,
1483 "TLS trace: %s:error in %s\n",
1488 if ( state ) LDAP_FREE( state );
1493 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1502 char *certerr = NULL;
1504 cert = X509_STORE_CTX_get_current_cert( ctx );
1505 errnum = X509_STORE_CTX_get_error( ctx );
1506 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1509 * X509_get_*_name return pointers to the internal copies of
1510 * those things requested. So do not free them.
1512 subject = X509_get_subject_name( cert );
1513 issuer = X509_get_issuer_name( cert );
1514 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1515 sname = X509_NAME_oneline( subject, NULL, 0 );
1516 iname = X509_NAME_oneline( issuer, NULL, 0 );
1517 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1519 if ( sname ) __etoa( sname );
1520 if ( iname ) __etoa( iname );
1522 certerr = LDAP_STRDUP( certerr );
1526 Debug( LDAP_DEBUG_TRACE,
1527 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1529 sname ? sname : "-unknown-" );
1530 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1532 Debug( LDAP_DEBUG_ANY,
1533 "TLS certificate verification: Error, %s\n",
1537 CRYPTO_free ( sname );
1539 CRYPTO_free ( iname );
1541 if ( certerr ) LDAP_FREE( certerr );
1547 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1549 (void) tls_verify_cb( ok, ctx );
1553 /* Inspired by ERR_print_errors in OpenSSL */
1555 tls_report_error( void )
1562 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1563 ERR_error_string_n( l, buf, sizeof( buf ) );
1566 file = LDAP_STRDUP( file );
1567 __etoa( (char *)file );
1571 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1574 if ( file ) LDAP_FREE( (void *)file );
1580 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1584 /* FIXME: Pregenerate the key on startup */
1585 /* FIXME: Who frees the key? */
1586 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1589 Debug( LDAP_DEBUG_ANY,
1590 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1591 key_length, is_export ? "export" : "domestic", 0 );
1598 tls_seed_PRNG( const char *randfile )
1600 #ifndef URANDOM_DEVICE
1601 /* no /dev/urandom (or equiv) */
1603 char buffer[MAXPATHLEN];
1605 if (randfile == NULL) {
1606 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1607 * If $HOME is not set or buffer too small to hold the pathname,
1608 * an error occurs. - From RAND_file_name() man page.
1609 * The fact is that when $HOME is NULL, .rnd is used.
1611 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1613 } else if (RAND_egd(randfile) > 0) {
1618 if (randfile == NULL) {
1619 Debug( LDAP_DEBUG_ANY,
1620 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1625 total = RAND_load_file(randfile, -1);
1627 if (RAND_status() == 0) {
1628 Debug( LDAP_DEBUG_ANY,
1629 "TLS: PRNG not been seeded with enough data\n",
1634 /* assume if there was enough bits to seed that it's okay
1635 * to write derived bits to the file
1637 RAND_write_file(randfile);
1651 struct dhplist *next;
1656 static struct dhplist *dhparams;
1658 /* From the OpenSSL 0.9.7 distro */
1659 static const char dhpem512[] =
1660 "-----BEGIN DH PARAMETERS-----\n\
1661 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1662 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1663 -----END DH PARAMETERS-----\n";
1665 static const char dhpem1024[] =
1666 "-----BEGIN DH PARAMETERS-----\n\
1667 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1668 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1669 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1670 -----END DH PARAMETERS-----\n";
1672 static const char dhpem2048[] =
1673 "-----BEGIN DH PARAMETERS-----\n\
1674 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1675 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1676 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1677 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1678 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1679 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1680 -----END DH PARAMETERS-----\n";
1682 static const char dhpem4096[] =
1683 "-----BEGIN DH PARAMETERS-----\n\
1684 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1685 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1686 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1687 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1688 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1689 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1690 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1691 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1692 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1693 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1694 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1695 -----END DH PARAMETERS-----\n";
1697 static const struct dhinfo dhpem[] = {
1698 { 512, dhpem512, sizeof(dhpem512) },
1699 { 1024, dhpem1024, sizeof(dhpem1024) },
1700 { 2048, dhpem2048, sizeof(dhpem2048) },
1701 { 4096, dhpem4096, sizeof(dhpem4096) },
1705 #define MAXDIGITS 12
1707 #define DHFILEPATTERN "dh%d.pem"
1710 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1712 struct dhplist *p = NULL;
1718 /* Do we have params of this length already? */
1719 #ifdef LDAP_R_COMPILE
1720 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1722 for ( p = dhparams; p; p=p->next ) {
1723 if ( p->keylength == key_length ) {
1724 #ifdef LDAP_R_COMPILE
1725 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1731 /* See if there's a file to load */
1732 if ( tls_opt_dhparamdir ) {
1733 file = LDAP_MALLOC( tls_opt_dhparamdirlen + 1 + MAXDIGITS +
1734 sizeof(DHFILEPATTERN) );
1737 sprintf( file, "%s/" DHFILEPATTERN, tls_opt_dhparamdir, key_length );
1739 file = LDAP_MALLOC( STRLENOF(LDAP_SYSCONFDIR) + 1 + MAXDIGITS +
1740 sizeof(DHFILEPATTERN) );
1743 sprintf( file, LDAP_SYSCONFDIR "/" DHFILEPATTERN, key_length );
1745 f = fopen(file,"r");
1746 /* Did we get the file? */
1748 b = BIO_new_fp( f, BIO_CLOSE );
1752 /* No - check for hardcoded params */
1755 for (i=0; dhpem[i].keylength; i++) {
1756 if ( dhpem[i].keylength == key_length ) {
1757 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1763 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1767 /* Generating on the fly is expensive/slow... */
1769 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1772 p = LDAP_MALLOC( sizeof(struct dhplist) );
1774 p->keylength = key_length;
1781 #ifdef LDAP_R_COMPILE
1782 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1789 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1794 if (HAS_TLS( sb )) {
1795 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1804 ldap_pvt_tls_get_strength( void *s )
1809 c = SSL_get_current_cipher((SSL *)s);
1810 return SSL_CIPHER_get_bits(c, NULL);
1818 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1825 x = SSL_get_certificate((SSL *)s);
1827 if (!x) return LDAP_INVALID_CREDENTIALS;
1829 xn = X509_get_subject_name(x);
1830 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1833 return LDAP_NOT_SUPPORTED;
1838 ldap_start_tls( LDAP *ld,
1839 LDAPControl **serverctrls,
1840 LDAPControl **clientctrls,
1843 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1844 NULL, serverctrls, clientctrls, msgidp );
1848 ldap_install_tls( LDAP *ld )
1851 return LDAP_NOT_SUPPORTED;
1853 if ( ldap_tls_inplace( ld ) ) {
1854 return LDAP_LOCAL_ERROR;
1857 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1862 ldap_start_tls_s ( LDAP *ld,
1863 LDAPControl **serverctrls,
1864 LDAPControl **clientctrls )
1867 return LDAP_NOT_SUPPORTED;
1870 char *rspoid = NULL;
1871 struct berval *rspdata = NULL;
1873 /* XXYYZ: this initiates operation only on default connection! */
1875 if ( ldap_tls_inplace( ld ) ) {
1876 return LDAP_LOCAL_ERROR;
1879 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1880 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1882 if ( rspoid != NULL ) {
1886 if ( rspdata != NULL ) {
1887 ber_bvfree( rspdata );
1890 if ( rc == LDAP_SUCCESS ) {
1891 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );