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_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;
109 static void tls_init_threads( void )
113 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
114 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
116 CRYPTO_set_locking_callback( tls_locking_cb );
117 /* FIXME: the thread id should be added somehow... */
119 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
121 #endif /* LDAP_R_COMPILE */
124 * Tear down the TLS subsystem. Should only be called once.
127 ldap_pvt_tls_destroy( void )
129 SSL_CTX_free(tls_def_ctx);
136 if ( tls_opt_certfile ) {
137 LDAP_FREE( tls_opt_certfile );
138 tls_opt_certfile = NULL;
140 if ( tls_opt_keyfile ) {
141 LDAP_FREE( tls_opt_keyfile );
142 tls_opt_keyfile = NULL;
144 if ( tls_opt_dhfile ) {
145 LDAP_FREE( tls_opt_dhfile );
146 tls_opt_dhfile = NULL;
148 if ( tls_opt_cacertfile ) {
149 LDAP_FREE( tls_opt_cacertfile );
150 tls_opt_cacertfile = NULL;
152 if ( tls_opt_cacertdir ) {
153 LDAP_FREE( tls_opt_cacertdir );
154 tls_opt_cacertdir = NULL;
156 if ( tls_opt_ciphersuite ) {
157 LDAP_FREE( tls_opt_ciphersuite );
158 tls_opt_ciphersuite = NULL;
160 if ( tls_opt_randfile ) {
161 LDAP_FREE( tls_opt_randfile );
162 tls_opt_randfile = NULL;
167 * Initialize TLS subsystem. Should be called only once.
170 ldap_pvt_tls_init( void )
172 static int tls_initialized = 0;
174 if ( tls_initialized++ ) return 0;
178 char *file = LDAP_STRDUP( tls_opt_randfile );
179 if ( file ) __atoe( file );
180 (void) tls_seed_PRNG( file );
184 (void) tls_seed_PRNG( tls_opt_randfile );
187 #ifdef LDAP_R_COMPILE
191 SSL_load_error_strings();
192 SSLeay_add_ssl_algorithms();
194 /* FIXME: mod_ssl does this */
195 X509V3_add_standard_extensions();
200 * initialize the default context
203 ldap_pvt_tls_init_def_ctx( void )
205 STACK_OF(X509_NAME) *calist;
207 char *ciphersuite = tls_opt_ciphersuite;
208 char *cacertfile = tls_opt_cacertfile;
209 char *cacertdir = tls_opt_cacertdir;
210 char *certfile = tls_opt_certfile;
211 char *keyfile = tls_opt_keyfile;
212 char *dhfile = tls_opt_dhfile;
214 #ifdef LDAP_R_COMPILE
215 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
218 if ( !certfile && !keyfile && !cacertfile && !cacertdir ) {
219 /* minimum configuration not provided */
220 #ifdef LDAP_R_COMPILE
221 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
223 return LDAP_NOT_SUPPORTED;
227 /* This ASCII/EBCDIC handling is a real pain! */
229 ciphersuite = LDAP_STRDUP( ciphersuite );
230 __atoe( ciphersuite );
233 cacertfile = LDAP_STRDUP( cacertfile );
234 __atoe( cacertfile );
237 cacertdir = LDAP_STRDUP( cacertdir );
241 certfile = LDAP_STRDUP( certfile );
245 keyfile = LDAP_STRDUP( keyfile );
249 dhfile = LDAP_STRDUP( dhfile );
253 if ( tls_def_ctx == NULL ) {
255 tls_def_ctx = SSL_CTX_new( SSLv23_method() );
256 if ( tls_def_ctx == NULL ) {
257 Debug( LDAP_DEBUG_ANY,
258 "TLS: could not allocate default ctx (%lu).\n",
259 ERR_peek_error(),0,0);
264 SSL_CTX_set_session_id_context( tls_def_ctx,
265 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
267 if ( tls_opt_ciphersuite &&
268 !SSL_CTX_set_cipher_list( tls_def_ctx, ciphersuite ) )
270 Debug( LDAP_DEBUG_ANY,
271 "TLS: could not set cipher list %s.\n",
272 tls_opt_ciphersuite, 0, 0 );
278 if (tls_opt_cacertfile != NULL || tls_opt_cacertdir != NULL) {
279 if ( !SSL_CTX_load_verify_locations( tls_def_ctx,
280 cacertfile, cacertdir ) ||
281 !SSL_CTX_set_default_verify_paths( tls_def_ctx ) )
283 Debug( LDAP_DEBUG_ANY, "TLS: "
284 "could not load verify locations (file:`%s',dir:`%s').\n",
285 tls_opt_cacertfile ? tls_opt_cacertfile : "",
286 tls_opt_cacertdir ? tls_opt_cacertdir : "",
293 calist = get_ca_list( cacertfile, cacertdir );
295 Debug( LDAP_DEBUG_ANY, "TLS: "
296 "could not load client CA list (file:`%s',dir:`%s').\n",
297 tls_opt_cacertfile ? tls_opt_cacertfile : "",
298 tls_opt_cacertdir ? tls_opt_cacertdir : "",
305 SSL_CTX_set_client_CA_list( tls_def_ctx, calist );
308 if ( tls_opt_keyfile &&
309 !SSL_CTX_use_PrivateKey_file( tls_def_ctx,
310 keyfile, SSL_FILETYPE_PEM ) )
312 Debug( LDAP_DEBUG_ANY,
313 "TLS: could not use key file `%s'.\n",
314 tls_opt_keyfile,0,0);
320 if ( tls_opt_certfile &&
321 !SSL_CTX_use_certificate_file( tls_def_ctx,
322 certfile, SSL_FILETYPE_PEM ) )
324 Debug( LDAP_DEBUG_ANY,
325 "TLS: could not use certificate `%s'.\n",
326 tls_opt_certfile,0,0);
332 if ( ( tls_opt_certfile || tls_opt_keyfile ) &&
333 !SSL_CTX_check_private_key( tls_def_ctx ) )
335 Debug( LDAP_DEBUG_ANY,
336 "TLS: private key mismatch.\n",
343 if ( tls_opt_dhfile ) {
348 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
349 Debug( LDAP_DEBUG_ANY,
350 "TLS: could not use DH parameters file `%s'.\n",
356 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
357 p = LDAP_MALLOC( sizeof(dhplist) );
359 p->keylength = DH_size( dh ) * 8;
368 if ( tls_opt_trace ) {
369 SSL_CTX_set_info_callback( tls_def_ctx, tls_info_cb );
373 if ( tls_opt_require_cert ) {
375 if ( tls_opt_require_cert == LDAP_OPT_X_TLS_DEMAND ||
376 tls_opt_require_cert == LDAP_OPT_X_TLS_HARD ) {
377 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
381 SSL_CTX_set_verify( tls_def_ctx, i,
382 tls_opt_require_cert == LDAP_OPT_X_TLS_ALLOW ?
383 tls_verify_ok : tls_verify_cb );
384 SSL_CTX_set_tmp_rsa_callback( tls_def_ctx, tls_tmp_rsa_cb );
385 SSL_CTX_set_tmp_dh_callback( tls_def_ctx, tls_tmp_dh_cb );
386 #ifdef HAVE_OPENSSL_CRL
387 if ( tls_opt_crlcheck ) {
388 X509_STORE *x509_s = SSL_CTX_get_cert_store( tls_def_ctx );
389 if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
390 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
391 } else if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
392 X509_STORE_set_flags( x509_s,
393 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
399 if ( rc == -1 && tls_def_ctx != NULL ) {
400 SSL_CTX_free( tls_def_ctx );
404 LDAP_FREE( ciphersuite );
405 LDAP_FREE( cacertfile );
406 LDAP_FREE( cacertdir );
407 LDAP_FREE( certfile );
408 LDAP_FREE( keyfile );
411 #ifdef LDAP_R_COMPILE
412 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
417 static STACK_OF(X509_NAME) *
418 get_ca_list( char * bundle, char * dir )
420 STACK_OF(X509_NAME) *ca_list = NULL;
423 ca_list = SSL_load_client_CA_file( bundle );
425 #if defined(HAVE_DIRENT_H) || defined(dirent)
430 ca_list = sk_X509_NAME_new_null();
433 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
435 sk_X509_NAME_free( ca_list );
444 alloc_handle( void *ctx_arg )
450 ctx = (SSL_CTX *) ctx_arg;
452 if ( ldap_pvt_tls_init_def_ctx() < 0 ) return NULL;
456 ssl = SSL_new( ctx );
458 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
465 update_flags( Sockbuf *sb, SSL * ssl, int rc )
467 int err = SSL_get_error(ssl, rc);
469 sb->sb_trans_needs_read = 0;
470 sb->sb_trans_needs_write = 0;
472 if (err == SSL_ERROR_WANT_READ) {
473 sb->sb_trans_needs_read = 1;
476 } else if (err == SSL_ERROR_WANT_WRITE) {
477 sb->sb_trans_needs_write = 1;
480 } else if (err == SSL_ERROR_WANT_CONNECT) {
487 * TLS support for LBER Sockbufs
492 Sockbuf_IO_Desc *sbiod;
495 static BIO_METHOD sb_tls_bio_method;
498 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
503 assert( sbiod != NULL );
505 p = LBER_MALLOC( sizeof( *p ) );
512 bio = BIO_new( &sb_tls_bio_method );
513 bio->ptr = (void *)p;
514 SSL_set_bio( p->ssl, bio, bio );
515 sbiod->sbiod_pvt = p;
520 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
524 assert( sbiod != NULL );
525 assert( sbiod->sbiod_pvt != NULL );
527 p = (struct tls_data *)sbiod->sbiod_pvt;
529 LBER_FREE( sbiod->sbiod_pvt );
530 sbiod->sbiod_pvt = NULL;
535 sb_tls_close( Sockbuf_IO_Desc *sbiod )
539 assert( sbiod != NULL );
540 assert( sbiod->sbiod_pvt != NULL );
542 p = (struct tls_data *)sbiod->sbiod_pvt;
543 SSL_shutdown( p->ssl );
548 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
552 assert( sbiod != NULL );
553 assert( sbiod->sbiod_pvt != NULL );
555 p = (struct tls_data *)sbiod->sbiod_pvt;
557 if ( opt == LBER_SB_OPT_GET_SSL ) {
558 *((SSL **)arg) = p->ssl;
561 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
562 if( SSL_pending( p->ssl ) > 0 ) {
567 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
571 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
577 assert( sbiod != NULL );
578 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
580 p = (struct tls_data *)sbiod->sbiod_pvt;
582 ret = SSL_read( p->ssl, (char *)buf, len );
584 errno = WSAGetLastError();
586 err = SSL_get_error( p->ssl, ret );
587 if (err == SSL_ERROR_WANT_READ ) {
588 sbiod->sbiod_sb->sb_trans_needs_read = 1;
592 sbiod->sbiod_sb->sb_trans_needs_read = 0;
597 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
603 assert( sbiod != NULL );
604 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
606 p = (struct tls_data *)sbiod->sbiod_pvt;
608 ret = SSL_write( p->ssl, (char *)buf, len );
610 errno = WSAGetLastError();
612 err = SSL_get_error( p->ssl, ret );
613 if (err == SSL_ERROR_WANT_WRITE ) {
614 sbiod->sbiod_sb->sb_trans_needs_write = 1;
618 sbiod->sbiod_sb->sb_trans_needs_write = 0;
623 static Sockbuf_IO sb_tls_sbio =
625 sb_tls_setup, /* sbi_setup */
626 sb_tls_remove, /* sbi_remove */
627 sb_tls_ctrl, /* sbi_ctrl */
628 sb_tls_read, /* sbi_read */
629 sb_tls_write, /* sbi_write */
630 sb_tls_close /* sbi_close */
634 sb_tls_bio_create( BIO *b ) {
643 sb_tls_bio_destroy( BIO *b )
645 if ( b == NULL ) return 0;
647 b->ptr = NULL; /* sb_tls_remove() will free it */
654 sb_tls_bio_read( BIO *b, char *buf, int len )
659 if ( buf == NULL || len <= 0 ) return 0;
661 p = (struct tls_data *)b->ptr;
663 if ( p == NULL || p->sbiod == NULL ) {
667 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
669 BIO_clear_retry_flags( b );
672 if ( err == EAGAIN || err == EWOULDBLOCK ) {
673 BIO_set_retry_read( b );
681 sb_tls_bio_write( BIO *b, const char *buf, int len )
686 if ( buf == NULL || len <= 0 ) return 0;
688 p = (struct tls_data *)b->ptr;
690 if ( p == NULL || p->sbiod == NULL ) {
694 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
696 BIO_clear_retry_flags( b );
699 if ( err == EAGAIN || err == EWOULDBLOCK ) {
700 BIO_set_retry_write( b );
708 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
710 if ( cmd == BIO_CTRL_FLUSH ) {
711 /* The OpenSSL library needs this */
718 sb_tls_bio_gets( BIO *b, char *buf, int len )
724 sb_tls_bio_puts( BIO *b, const char *str )
726 return sb_tls_bio_write( b, str, strlen( str ) );
729 static BIO_METHOD sb_tls_bio_method =
731 ( 100 | 0x400 ), /* it's a source/sink BIO */
743 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
744 * a SSL_CTX * or NULL, in which case the default ctx is used.
748 * 0 - Success. Connection is ready for communication.
749 * <0 - Error. Can't create a TLS stream.
750 * >0 - Partial success.
751 * Do a select (using information from lber_pvt_sb_needs_{read,write}
756 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
758 Sockbuf *sb = conn->lconn_sb;
762 if ( HAS_TLS( sb ) ) {
763 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
766 struct ldapoptions *lo;
767 void *ctx = ld->ld_defconn
768 ? ld->ld_defconn->lconn_tls_ctx : NULL;
770 ssl = alloc_handle( ctx );
772 if ( ssl == NULL ) return -1;
775 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
776 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
778 ber_sockbuf_add_io( sb, &sb_tls_sbio,
779 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
783 conn->lconn_tls_ctx = tls_def_ctx;
785 lo = &ld->ld_options;
786 if ( lo->ldo_tls_connect_cb )
787 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
788 lo = LDAP_INT_GLOBAL_OPT();
789 if ( lo && lo->ldo_tls_connect_cb )
790 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
793 err = SSL_connect( ssl );
796 errno = WSAGetLastError();
800 if ( update_flags( sb, ssl, err )) {
804 if ((err = ERR_peek_error())) {
807 if ( ld->ld_error ) {
808 LDAP_FREE( ld->ld_error );
810 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
812 if ( ld->ld_error ) __etoa(ld->ld_error);
816 Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
818 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
819 LBER_SBIOD_LEVEL_TRANSPORT );
821 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
822 LBER_SBIOD_LEVEL_TRANSPORT );
831 * Call this to do a TLS accept on a sockbuf.
832 * Everything else is the same as with tls_connect.
835 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
840 if ( HAS_TLS( sb ) ) {
841 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
844 ssl = alloc_handle( ctx_arg );
845 if ( ssl == NULL ) return -1;
848 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
849 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
851 ber_sockbuf_add_io( sb, &sb_tls_sbio,
852 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
855 err = SSL_accept( ssl );
858 errno = WSAGetLastError();
861 if ( update_flags( sb, ssl, err )) return 1;
863 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
866 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
867 LBER_SBIOD_LEVEL_TRANSPORT );
869 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
870 LBER_SBIOD_LEVEL_TRANSPORT );
879 ldap_pvt_tls_inplace ( Sockbuf *sb )
881 return HAS_TLS( sb ) ? 1 : 0;
885 ldap_tls_inplace( LDAP *ld )
889 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
890 sb = ld->ld_defconn->lconn_sb;
892 } else if ( ld->ld_sb ) {
899 return ldap_pvt_tls_inplace( sb );
903 tls_get_cert( SSL *s )
905 /* If peer cert was bad, treat as if no cert was given */
906 if (SSL_get_verify_result(s)) {
907 /* If we can send an alert, do so */
908 if (SSL_version(s) != SSL2_VERSION) {
909 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
913 return SSL_get_peer_certificate(s);
917 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
918 LDAPDN_rewrite_dummy *func, unsigned flags )
924 x = tls_get_cert((SSL *)s);
926 if (!x) return LDAP_INVALID_CREDENTIALS;
928 xn = X509_get_subject_name(x);
929 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
935 ldap_pvt_tls_get_peer_hostname( void *s )
942 x = tls_get_cert((SSL *)s);
945 xn = X509_get_subject_name(x);
947 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
953 p = LDAP_STRDUP(buf);
958 /* what kind of hostname were we given? */
964 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
966 int i, ret = LDAP_LOCAL_ERROR;
972 struct in6_addr addr;
977 if( ldap_int_hostname &&
978 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
980 name = ldap_int_hostname;
985 x = tls_get_cert((SSL *)s);
987 Debug( LDAP_DEBUG_ANY,
988 "TLS: unable to get peer certificate.\n",
990 /* If this was a fatal condition, things would have
991 * aborted long before now.
997 if (name[0] == '[' && strchr(name, ']')) {
998 char *n2 = ldap_strdup(name+1);
999 *strchr(n2, ']') = 2;
1000 if (inet_pton(AF_INET6, n2, &addr))
1005 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1006 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1009 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1012 STACK_OF(GENERAL_NAME) *alt;
1014 ex = X509_get_ext(x, i);
1015 alt = X509V3_EXT_d2i(ex);
1017 int n, len1 = 0, len2 = 0;
1018 char *domain = NULL;
1021 if (ntype == IS_DNS) {
1022 len1 = strlen(name);
1023 domain = strchr(name, '.');
1025 len2 = len1 - (domain-name);
1028 n = sk_GENERAL_NAME_num(alt);
1029 for (i=0; i<n; i++) {
1032 gn = sk_GENERAL_NAME_value(alt, i);
1033 if (gn->type == GEN_DNS) {
1034 if (ntype != IS_DNS) continue;
1036 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1037 sl = ASN1_STRING_length(gn->d.ia5);
1040 if (sl == 0) continue;
1042 /* Is this an exact match? */
1043 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1047 /* Is this a wildcard match? */
1048 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1049 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1054 } else if (gn->type == GEN_IPADD) {
1055 if (ntype == IS_DNS) continue;
1057 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1058 sl = ASN1_STRING_length(gn->d.ia5);
1060 #ifdef LDAP_PF_INET6
1061 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1065 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1068 if (!memcmp(sn, &addr, sl)) {
1074 GENERAL_NAMES_free(alt);
1075 if (i < n) { /* Found a match */
1081 if (ret != LDAP_SUCCESS) {
1086 xn = X509_get_subject_name(x);
1087 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1088 buf, sizeof(buf)) == -1)
1090 Debug( LDAP_DEBUG_ANY,
1091 "TLS: unable to get common name from peer certificate.\n",
1093 ret = LDAP_CONNECT_ERROR;
1094 if ( ld->ld_error ) {
1095 LDAP_FREE( ld->ld_error );
1097 ld->ld_error = LDAP_STRDUP(
1098 _("TLS: unable to get CN from peer certificate"));
1100 } else if (strcasecmp(name, buf) == 0 ) {
1103 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1104 char *domain = strchr(name, '.');
1110 dlen = sl - (domain-name);
1113 /* Is this a wildcard match? */
1114 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1120 if( ret == LDAP_LOCAL_ERROR ) {
1121 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1122 "common name in certificate (%s).\n",
1124 ret = LDAP_CONNECT_ERROR;
1125 if ( ld->ld_error ) {
1126 LDAP_FREE( ld->ld_error );
1128 ld->ld_error = LDAP_STRDUP(
1129 _("TLS: hostname does not match CN in peer certificate"));
1137 ldap_pvt_tls_get_peer_issuer( void *s )
1139 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1144 x = SSL_get_peer_certificate((SSL *)s);
1146 if (!x) return NULL;
1148 xn = X509_get_issuer_name(x);
1149 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1158 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1163 case LDAP_OPT_X_TLS_CACERTFILE:
1164 case LDAP_OPT_X_TLS_CACERTDIR:
1165 case LDAP_OPT_X_TLS_CERTFILE:
1166 case LDAP_OPT_X_TLS_KEYFILE:
1167 case LDAP_OPT_X_TLS_RANDOM_FILE:
1168 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1169 case LDAP_OPT_X_TLS_DHFILE:
1170 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1172 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1173 case LDAP_OPT_X_TLS:
1175 if ( strcasecmp( arg, "never" ) == 0 ) {
1176 i = LDAP_OPT_X_TLS_NEVER ;
1178 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1179 i = LDAP_OPT_X_TLS_DEMAND ;
1181 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1182 i = LDAP_OPT_X_TLS_ALLOW ;
1184 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1185 i = LDAP_OPT_X_TLS_TRY ;
1187 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1188 ( strcasecmp( arg, "on" ) == 0 ) ||
1189 ( strcasecmp( arg, "yes" ) == 0) ||
1190 ( strcasecmp( arg, "true" ) == 0 ) )
1192 i = LDAP_OPT_X_TLS_HARD ;
1196 return ldap_pvt_tls_set_option( ld, option, &i );
1199 #ifdef HAVE_OPENSSL_CRL
1200 case LDAP_OPT_X_TLS_CRLCHECK:
1202 if ( strcasecmp( arg, "none" ) == 0 ) {
1203 i = LDAP_OPT_X_TLS_CRL_NONE ;
1204 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1205 i = LDAP_OPT_X_TLS_CRL_PEER ;
1206 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1207 i = LDAP_OPT_X_TLS_CRL_ALL ;
1210 return ldap_pvt_tls_set_option( ld, option, &i );
1219 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1221 struct ldapoptions *lo;
1224 assert( LDAP_VALID( ld ) );
1226 if( !LDAP_VALID( ld ) ) {
1227 return LDAP_OPT_ERROR;
1230 lo = &ld->ld_options;
1233 /* Get pointer to global option structure */
1234 lo = LDAP_INT_GLOBAL_OPT();
1236 return LDAP_NO_MEMORY;
1241 case LDAP_OPT_X_TLS:
1242 *(int *)arg = lo->ldo_tls_mode;
1244 case LDAP_OPT_X_TLS_CTX:
1246 *(void **)arg = (void *) tls_def_ctx;
1248 *(void **)arg = ld->ld_defconn->lconn_tls_ctx;
1251 case LDAP_OPT_X_TLS_CACERTFILE:
1252 *(char **)arg = tls_opt_cacertfile ?
1253 LDAP_STRDUP( tls_opt_cacertfile ) : NULL;
1255 case LDAP_OPT_X_TLS_CACERTDIR:
1256 *(char **)arg = tls_opt_cacertdir ?
1257 LDAP_STRDUP( tls_opt_cacertdir ) : NULL;
1259 case LDAP_OPT_X_TLS_CERTFILE:
1260 *(char **)arg = tls_opt_certfile ?
1261 LDAP_STRDUP( tls_opt_certfile ) : NULL;
1263 case LDAP_OPT_X_TLS_KEYFILE:
1264 *(char **)arg = tls_opt_keyfile ?
1265 LDAP_STRDUP( tls_opt_keyfile ) : NULL;
1267 case LDAP_OPT_X_TLS_DHFILE:
1268 *(char **)arg = tls_opt_dhfile ?
1269 LDAP_STRDUP( tls_opt_dhfile ) : NULL;
1271 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1272 *(int *)arg = tls_opt_require_cert;
1274 #ifdef HAVE_OPENSSL_CRL
1275 case LDAP_OPT_X_TLS_CRLCHECK:
1276 *(int *)arg = tls_opt_crlcheck;
1279 case LDAP_OPT_X_TLS_RANDOM_FILE:
1280 *(char **)arg = tls_opt_randfile ?
1281 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1283 case LDAP_OPT_X_TLS_SSL_CTX: {
1286 LDAPConn *conn = ld->ld_defconn;
1287 if ( conn != NULL ) {
1288 Sockbuf *sb = conn->lconn_sb;
1289 retval = ldap_pvt_tls_sb_ctx( sb );
1292 *(void **)arg = retval;
1295 case LDAP_OPT_X_TLS_CONNECT_CB:
1296 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1298 case LDAP_OPT_X_TLS_CONNECT_ARG:
1299 *(void **)arg = lo->ldo_tls_connect_arg;
1308 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1310 struct ldapoptions *lo;
1313 assert( LDAP_VALID( ld ) );
1315 if( !LDAP_VALID( ld ) ) {
1316 return LDAP_OPT_ERROR;
1319 lo = &ld->ld_options;
1322 /* Get pointer to global option structure */
1323 lo = LDAP_INT_GLOBAL_OPT();
1325 return LDAP_NO_MEMORY;
1330 case LDAP_OPT_X_TLS:
1331 switch( *(int *) arg ) {
1332 case LDAP_OPT_X_TLS_NEVER:
1333 case LDAP_OPT_X_TLS_DEMAND:
1334 case LDAP_OPT_X_TLS_ALLOW:
1335 case LDAP_OPT_X_TLS_TRY:
1336 case LDAP_OPT_X_TLS_HARD:
1338 lo->ldo_tls_mode = *(int *)arg;
1345 case LDAP_OPT_X_TLS_CTX:
1347 tls_def_ctx = (SSL_CTX *) arg;
1350 ld->ld_defconn->lconn_tls_ctx = arg;
1353 case LDAP_OPT_X_TLS_CONNECT_CB:
1354 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1356 case LDAP_OPT_X_TLS_CONNECT_ARG:
1357 lo->ldo_tls_connect_arg = arg;
1366 case LDAP_OPT_X_TLS_CACERTFILE:
1367 if ( tls_opt_cacertfile ) LDAP_FREE( tls_opt_cacertfile );
1368 tls_opt_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1370 case LDAP_OPT_X_TLS_CACERTDIR:
1371 if ( tls_opt_cacertdir ) LDAP_FREE( tls_opt_cacertdir );
1372 tls_opt_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1374 case LDAP_OPT_X_TLS_CERTFILE:
1375 if ( tls_opt_certfile ) LDAP_FREE( tls_opt_certfile );
1376 tls_opt_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1378 case LDAP_OPT_X_TLS_KEYFILE:
1379 if ( tls_opt_keyfile ) LDAP_FREE( tls_opt_keyfile );
1380 tls_opt_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1382 case LDAP_OPT_X_TLS_DHFILE:
1383 if ( tls_opt_dhfile ) LDAP_FREE( tls_opt_dhfile );
1384 tls_opt_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1386 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1387 switch( *(int *) arg ) {
1388 case LDAP_OPT_X_TLS_NEVER:
1389 case LDAP_OPT_X_TLS_DEMAND:
1390 case LDAP_OPT_X_TLS_ALLOW:
1391 case LDAP_OPT_X_TLS_TRY:
1392 case LDAP_OPT_X_TLS_HARD:
1393 tls_opt_require_cert = * (int *) arg;
1397 #ifdef HAVE_OPENSSL_CRL
1398 case LDAP_OPT_X_TLS_CRLCHECK:
1399 switch( *(int *) arg ) {
1400 case LDAP_OPT_X_TLS_CRL_NONE:
1401 case LDAP_OPT_X_TLS_CRL_PEER:
1402 case LDAP_OPT_X_TLS_CRL_ALL:
1403 tls_opt_crlcheck = * (int *) arg;
1408 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1409 if ( tls_opt_ciphersuite ) LDAP_FREE( tls_opt_ciphersuite );
1410 tls_opt_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1412 case LDAP_OPT_X_TLS_RANDOM_FILE:
1413 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1414 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1423 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1425 Sockbuf *sb = conn->lconn_sb;
1430 host = srv->lud_host;
1432 host = conn->lconn_server->lud_host;
1435 /* avoid NULL host */
1436 if( host == NULL ) {
1440 (void) ldap_pvt_tls_init();
1443 * Fortunately, the lib uses blocking io...
1445 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1446 ld->ld_errno = LDAP_CONNECT_ERROR;
1447 return (ld->ld_errno);
1450 ssl = ldap_pvt_tls_sb_ctx( sb );
1451 assert( ssl != NULL );
1454 * compare host with name(s) in certificate
1456 if (tls_opt_require_cert != LDAP_OPT_X_TLS_NEVER) {
1457 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1458 if (ld->ld_errno != LDAP_SUCCESS) {
1459 return ld->ld_errno;
1463 return LDAP_SUCCESS;
1466 /* Derived from openssl/apps/s_cb.c */
1468 tls_info_cb( const SSL *ssl, int where, int ret )
1472 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1474 w = where & ~SSL_ST_MASK;
1475 if ( w & SSL_ST_CONNECT ) {
1477 } else if ( w & SSL_ST_ACCEPT ) {
1485 state = LDAP_STRDUP( state );
1489 if ( where & SSL_CB_LOOP ) {
1490 Debug( LDAP_DEBUG_TRACE,
1491 "TLS trace: %s:%s\n",
1494 } else if ( where & SSL_CB_ALERT ) {
1495 char *atype = (char *) SSL_alert_type_string_long( ret );
1496 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1497 op = ( where & SSL_CB_READ ) ? "read" : "write";
1500 atype = LDAP_STRDUP( atype );
1504 adesc = LDAP_STRDUP( adesc );
1508 Debug( LDAP_DEBUG_TRACE,
1509 "TLS trace: SSL3 alert %s:%s:%s\n",
1512 if ( atype ) LDAP_FREE( atype );
1513 if ( adesc ) LDAP_FREE( adesc );
1515 } else if ( where & SSL_CB_EXIT ) {
1517 Debug( LDAP_DEBUG_TRACE,
1518 "TLS trace: %s:failed in %s\n",
1520 } else if ( ret < 0 ) {
1521 Debug( LDAP_DEBUG_TRACE,
1522 "TLS trace: %s:error in %s\n",
1527 if ( state ) LDAP_FREE( state );
1532 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1541 char *certerr = NULL;
1543 cert = X509_STORE_CTX_get_current_cert( ctx );
1544 errnum = X509_STORE_CTX_get_error( ctx );
1545 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1548 * X509_get_*_name return pointers to the internal copies of
1549 * those things requested. So do not free them.
1551 subject = X509_get_subject_name( cert );
1552 issuer = X509_get_issuer_name( cert );
1553 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1554 sname = X509_NAME_oneline( subject, NULL, 0 );
1555 iname = X509_NAME_oneline( issuer, NULL, 0 );
1556 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1558 if ( sname ) __etoa( sname );
1559 if ( iname ) __etoa( iname );
1561 certerr = LDAP_STRDUP( certerr );
1565 Debug( LDAP_DEBUG_TRACE,
1566 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1568 sname ? sname : "-unknown-" );
1569 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1571 Debug( LDAP_DEBUG_ANY,
1572 "TLS certificate verification: Error, %s\n",
1576 CRYPTO_free ( sname );
1578 CRYPTO_free ( iname );
1580 if ( certerr ) LDAP_FREE( certerr );
1586 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1588 (void) tls_verify_cb( ok, ctx );
1592 /* Inspired by ERR_print_errors in OpenSSL */
1594 tls_report_error( void )
1601 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1602 ERR_error_string_n( l, buf, sizeof( buf ) );
1605 file = LDAP_STRDUP( file );
1606 __etoa( (char *)file );
1610 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1613 if ( file ) LDAP_FREE( (void *)file );
1619 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1623 /* FIXME: Pregenerate the key on startup */
1624 /* FIXME: Who frees the key? */
1625 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1628 Debug( LDAP_DEBUG_ANY,
1629 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1630 key_length, is_export ? "export" : "domestic", 0 );
1637 tls_seed_PRNG( const char *randfile )
1639 #ifndef URANDOM_DEVICE
1640 /* no /dev/urandom (or equiv) */
1642 char buffer[MAXPATHLEN];
1644 if (randfile == NULL) {
1645 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1646 * If $HOME is not set or buffer too small to hold the pathname,
1647 * an error occurs. - From RAND_file_name() man page.
1648 * The fact is that when $HOME is NULL, .rnd is used.
1650 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1652 } else if (RAND_egd(randfile) > 0) {
1657 if (randfile == NULL) {
1658 Debug( LDAP_DEBUG_ANY,
1659 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1664 total = RAND_load_file(randfile, -1);
1666 if (RAND_status() == 0) {
1667 Debug( LDAP_DEBUG_ANY,
1668 "TLS: PRNG not been seeded with enough data\n",
1673 /* assume if there was enough bits to seed that it's okay
1674 * to write derived bits to the file
1676 RAND_write_file(randfile);
1690 /* From the OpenSSL 0.9.7 distro */
1691 static const char dhpem512[] =
1692 "-----BEGIN DH PARAMETERS-----\n\
1693 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1694 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1695 -----END DH PARAMETERS-----\n";
1697 static const char dhpem1024[] =
1698 "-----BEGIN DH PARAMETERS-----\n\
1699 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1700 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1701 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1702 -----END DH PARAMETERS-----\n";
1704 static const char dhpem2048[] =
1705 "-----BEGIN DH PARAMETERS-----\n\
1706 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1707 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1708 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1709 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1710 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1711 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1712 -----END DH PARAMETERS-----\n";
1714 static const char dhpem4096[] =
1715 "-----BEGIN DH PARAMETERS-----\n\
1716 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1717 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1718 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1719 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1720 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1721 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1722 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1723 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1724 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1725 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1726 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1727 -----END DH PARAMETERS-----\n";
1729 static const struct dhinfo dhpem[] = {
1730 { 512, dhpem512, sizeof(dhpem512) },
1731 { 1024, dhpem1024, sizeof(dhpem1024) },
1732 { 2048, dhpem2048, sizeof(dhpem2048) },
1733 { 4096, dhpem4096, sizeof(dhpem4096) },
1738 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1740 struct dhplist *p = NULL;
1745 /* Do we have params of this length already? */
1746 #ifdef LDAP_R_COMPILE
1747 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1749 for ( p = dhparams; p; p=p->next ) {
1750 if ( p->keylength == key_length ) {
1751 #ifdef LDAP_R_COMPILE
1752 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1758 /* No - check for hardcoded params */
1760 for (i=0; dhpem[i].keylength; i++) {
1761 if ( dhpem[i].keylength == key_length ) {
1762 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1768 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1772 /* Generating on the fly is expensive/slow... */
1774 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1777 p = LDAP_MALLOC( sizeof(struct dhplist) );
1779 p->keylength = key_length;
1786 #ifdef LDAP_R_COMPILE
1787 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1794 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1799 if (HAS_TLS( sb )) {
1800 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1809 ldap_pvt_tls_get_strength( void *s )
1814 c = SSL_get_current_cipher((SSL *)s);
1815 return SSL_CIPHER_get_bits(c, NULL);
1823 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1830 x = SSL_get_certificate((SSL *)s);
1832 if (!x) return LDAP_INVALID_CREDENTIALS;
1834 xn = X509_get_subject_name(x);
1835 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1838 return LDAP_NOT_SUPPORTED;
1843 ldap_start_tls( LDAP *ld,
1844 LDAPControl **serverctrls,
1845 LDAPControl **clientctrls,
1848 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1849 NULL, serverctrls, clientctrls, msgidp );
1853 ldap_install_tls( LDAP *ld )
1856 return LDAP_NOT_SUPPORTED;
1858 if ( ldap_tls_inplace( ld ) ) {
1859 return LDAP_LOCAL_ERROR;
1862 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1867 ldap_start_tls_s ( LDAP *ld,
1868 LDAPControl **serverctrls,
1869 LDAPControl **clientctrls )
1872 return LDAP_NOT_SUPPORTED;
1875 char *rspoid = NULL;
1876 struct berval *rspdata = NULL;
1878 /* XXYYZ: this initiates operation only on default connection! */
1880 if ( ldap_tls_inplace( ld ) ) {
1881 return LDAP_LOCAL_ERROR;
1884 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1885 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1887 if ( rspoid != NULL ) {
1891 if ( rspdata != NULL ) {
1892 ber_bvfree( rspdata );
1895 if ( rc == LDAP_SUCCESS ) {
1896 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );