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;
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( int is_server )
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 ( is_server && !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 if ( tls_opt_dhfile ) {
386 SSL_CTX_set_tmp_dh_callback( tls_def_ctx, tls_tmp_dh_cb );
388 #ifdef HAVE_OPENSSL_CRL
389 if ( tls_opt_crlcheck ) {
390 X509_STORE *x509_s = SSL_CTX_get_cert_store( tls_def_ctx );
391 if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
392 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
393 } else if ( tls_opt_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
394 X509_STORE_set_flags( x509_s,
395 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
401 if ( rc == -1 && tls_def_ctx != NULL ) {
402 SSL_CTX_free( tls_def_ctx );
406 LDAP_FREE( ciphersuite );
407 LDAP_FREE( cacertfile );
408 LDAP_FREE( cacertdir );
409 LDAP_FREE( certfile );
410 LDAP_FREE( keyfile );
413 #ifdef LDAP_R_COMPILE
414 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
419 static STACK_OF(X509_NAME) *
420 get_ca_list( char * bundle, char * dir )
422 STACK_OF(X509_NAME) *ca_list = NULL;
425 ca_list = SSL_load_client_CA_file( bundle );
427 #if defined(HAVE_DIRENT_H) || defined(dirent)
432 ca_list = sk_X509_NAME_new_null();
435 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
437 sk_X509_NAME_free( ca_list );
446 alloc_handle( void *ctx_arg, int is_server )
452 ctx = (SSL_CTX *) ctx_arg;
454 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
458 ssl = SSL_new( ctx );
460 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
467 update_flags( Sockbuf *sb, SSL * ssl, int rc )
469 int err = SSL_get_error(ssl, rc);
471 sb->sb_trans_needs_read = 0;
472 sb->sb_trans_needs_write = 0;
474 if (err == SSL_ERROR_WANT_READ) {
475 sb->sb_trans_needs_read = 1;
478 } else if (err == SSL_ERROR_WANT_WRITE) {
479 sb->sb_trans_needs_write = 1;
482 } else if (err == SSL_ERROR_WANT_CONNECT) {
489 * TLS support for LBER Sockbufs
494 Sockbuf_IO_Desc *sbiod;
497 static BIO_METHOD sb_tls_bio_method;
500 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
505 assert( sbiod != NULL );
507 p = LBER_MALLOC( sizeof( *p ) );
514 bio = BIO_new( &sb_tls_bio_method );
515 bio->ptr = (void *)p;
516 SSL_set_bio( p->ssl, bio, bio );
517 sbiod->sbiod_pvt = p;
522 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
526 assert( sbiod != NULL );
527 assert( sbiod->sbiod_pvt != NULL );
529 p = (struct tls_data *)sbiod->sbiod_pvt;
531 LBER_FREE( sbiod->sbiod_pvt );
532 sbiod->sbiod_pvt = NULL;
537 sb_tls_close( Sockbuf_IO_Desc *sbiod )
541 assert( sbiod != NULL );
542 assert( sbiod->sbiod_pvt != NULL );
544 p = (struct tls_data *)sbiod->sbiod_pvt;
545 SSL_shutdown( p->ssl );
550 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
554 assert( sbiod != NULL );
555 assert( sbiod->sbiod_pvt != NULL );
557 p = (struct tls_data *)sbiod->sbiod_pvt;
559 if ( opt == LBER_SB_OPT_GET_SSL ) {
560 *((SSL **)arg) = p->ssl;
563 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
564 if( SSL_pending( p->ssl ) > 0 ) {
569 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
573 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
579 assert( sbiod != NULL );
580 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
582 p = (struct tls_data *)sbiod->sbiod_pvt;
584 ret = SSL_read( p->ssl, (char *)buf, len );
586 errno = WSAGetLastError();
588 err = SSL_get_error( p->ssl, ret );
589 if (err == SSL_ERROR_WANT_READ ) {
590 sbiod->sbiod_sb->sb_trans_needs_read = 1;
594 sbiod->sbiod_sb->sb_trans_needs_read = 0;
599 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
605 assert( sbiod != NULL );
606 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
608 p = (struct tls_data *)sbiod->sbiod_pvt;
610 ret = SSL_write( p->ssl, (char *)buf, len );
612 errno = WSAGetLastError();
614 err = SSL_get_error( p->ssl, ret );
615 if (err == SSL_ERROR_WANT_WRITE ) {
616 sbiod->sbiod_sb->sb_trans_needs_write = 1;
620 sbiod->sbiod_sb->sb_trans_needs_write = 0;
625 static Sockbuf_IO sb_tls_sbio =
627 sb_tls_setup, /* sbi_setup */
628 sb_tls_remove, /* sbi_remove */
629 sb_tls_ctrl, /* sbi_ctrl */
630 sb_tls_read, /* sbi_read */
631 sb_tls_write, /* sbi_write */
632 sb_tls_close /* sbi_close */
636 sb_tls_bio_create( BIO *b ) {
645 sb_tls_bio_destroy( BIO *b )
647 if ( b == NULL ) return 0;
649 b->ptr = NULL; /* sb_tls_remove() will free it */
656 sb_tls_bio_read( BIO *b, char *buf, int len )
661 if ( buf == NULL || len <= 0 ) return 0;
663 p = (struct tls_data *)b->ptr;
665 if ( p == NULL || p->sbiod == NULL ) {
669 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
671 BIO_clear_retry_flags( b );
674 if ( err == EAGAIN || err == EWOULDBLOCK ) {
675 BIO_set_retry_read( b );
683 sb_tls_bio_write( BIO *b, const char *buf, int len )
688 if ( buf == NULL || len <= 0 ) return 0;
690 p = (struct tls_data *)b->ptr;
692 if ( p == NULL || p->sbiod == NULL ) {
696 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
698 BIO_clear_retry_flags( b );
701 if ( err == EAGAIN || err == EWOULDBLOCK ) {
702 BIO_set_retry_write( b );
710 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
712 if ( cmd == BIO_CTRL_FLUSH ) {
713 /* The OpenSSL library needs this */
720 sb_tls_bio_gets( BIO *b, char *buf, int len )
726 sb_tls_bio_puts( BIO *b, const char *str )
728 return sb_tls_bio_write( b, str, strlen( str ) );
731 static BIO_METHOD sb_tls_bio_method =
733 ( 100 | 0x400 ), /* it's a source/sink BIO */
745 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
746 * a SSL_CTX * or NULL, in which case the default ctx is used.
750 * 0 - Success. Connection is ready for communication.
751 * <0 - Error. Can't create a TLS stream.
752 * >0 - Partial success.
753 * Do a select (using information from lber_pvt_sb_needs_{read,write}
758 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
760 Sockbuf *sb = conn->lconn_sb;
764 if ( HAS_TLS( sb ) ) {
765 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
768 struct ldapoptions *lo;
771 lo = &ld->ld_options;
772 ctx = lo->ldo_tls_ctx;
774 ssl = alloc_handle( ctx, 0 );
776 if ( ssl == NULL ) return -1;
779 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
780 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
782 ber_sockbuf_add_io( sb, &sb_tls_sbio,
783 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
787 lo->ldo_tls_ctx = ctx;
789 if ( lo->ldo_tls_connect_cb )
790 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
791 lo = LDAP_INT_GLOBAL_OPT();
792 if ( lo && lo->ldo_tls_connect_cb )
793 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
796 err = SSL_connect( ssl );
799 errno = WSAGetLastError();
803 if ( update_flags( sb, ssl, err )) {
807 if ((err = ERR_peek_error())) {
810 if ( ld->ld_error ) {
811 LDAP_FREE( ld->ld_error );
813 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
815 if ( ld->ld_error ) __etoa(ld->ld_error);
819 Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
821 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
822 LBER_SBIOD_LEVEL_TRANSPORT );
824 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
825 LBER_SBIOD_LEVEL_TRANSPORT );
834 * Call this to do a TLS accept on a sockbuf.
835 * Everything else is the same as with tls_connect.
838 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
843 if ( HAS_TLS( sb ) ) {
844 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
847 ssl = alloc_handle( ctx_arg, 1 );
848 if ( ssl == NULL ) return -1;
851 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
852 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
854 ber_sockbuf_add_io( sb, &sb_tls_sbio,
855 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
858 err = SSL_accept( ssl );
861 errno = WSAGetLastError();
864 if ( update_flags( sb, ssl, err )) return 1;
866 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
869 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
870 LBER_SBIOD_LEVEL_TRANSPORT );
872 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
873 LBER_SBIOD_LEVEL_TRANSPORT );
882 ldap_pvt_tls_inplace ( Sockbuf *sb )
884 return HAS_TLS( sb ) ? 1 : 0;
888 ldap_tls_inplace( LDAP *ld )
892 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
893 sb = ld->ld_defconn->lconn_sb;
895 } else if ( ld->ld_sb ) {
902 return ldap_pvt_tls_inplace( sb );
906 tls_get_cert( SSL *s )
908 /* If peer cert was bad, treat as if no cert was given */
909 if (SSL_get_verify_result(s)) {
910 /* If we can send an alert, do so */
911 if (SSL_version(s) != SSL2_VERSION) {
912 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
916 return SSL_get_peer_certificate(s);
920 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
921 LDAPDN_rewrite_dummy *func, unsigned flags )
927 x = tls_get_cert((SSL *)s);
929 if (!x) return LDAP_INVALID_CREDENTIALS;
931 xn = X509_get_subject_name(x);
932 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
938 ldap_pvt_tls_get_peer_hostname( void *s )
945 x = tls_get_cert((SSL *)s);
948 xn = X509_get_subject_name(x);
950 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
956 p = LDAP_STRDUP(buf);
961 /* what kind of hostname were we given? */
967 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
969 int i, ret = LDAP_LOCAL_ERROR;
975 struct in6_addr addr;
980 if( ldap_int_hostname &&
981 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
983 name = ldap_int_hostname;
988 x = tls_get_cert((SSL *)s);
990 Debug( LDAP_DEBUG_ANY,
991 "TLS: unable to get peer certificate.\n",
993 /* If this was a fatal condition, things would have
994 * aborted long before now.
1000 if (name[0] == '[' && strchr(name, ']')) {
1001 char *n2 = ldap_strdup(name+1);
1002 *strchr(n2, ']') = 2;
1003 if (inet_pton(AF_INET6, n2, &addr))
1008 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1009 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1012 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1015 STACK_OF(GENERAL_NAME) *alt;
1017 ex = X509_get_ext(x, i);
1018 alt = X509V3_EXT_d2i(ex);
1020 int n, len1 = 0, len2 = 0;
1021 char *domain = NULL;
1024 if (ntype == IS_DNS) {
1025 len1 = strlen(name);
1026 domain = strchr(name, '.');
1028 len2 = len1 - (domain-name);
1031 n = sk_GENERAL_NAME_num(alt);
1032 for (i=0; i<n; i++) {
1035 gn = sk_GENERAL_NAME_value(alt, i);
1036 if (gn->type == GEN_DNS) {
1037 if (ntype != IS_DNS) continue;
1039 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1040 sl = ASN1_STRING_length(gn->d.ia5);
1043 if (sl == 0) continue;
1045 /* Is this an exact match? */
1046 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1050 /* Is this a wildcard match? */
1051 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1052 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1057 } else if (gn->type == GEN_IPADD) {
1058 if (ntype == IS_DNS) continue;
1060 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1061 sl = ASN1_STRING_length(gn->d.ia5);
1063 #ifdef LDAP_PF_INET6
1064 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1068 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1071 if (!memcmp(sn, &addr, sl)) {
1077 GENERAL_NAMES_free(alt);
1078 if (i < n) { /* Found a match */
1084 if (ret != LDAP_SUCCESS) {
1089 xn = X509_get_subject_name(x);
1090 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1091 buf, sizeof(buf)) == -1)
1093 Debug( LDAP_DEBUG_ANY,
1094 "TLS: unable to get common name from peer certificate.\n",
1096 ret = LDAP_CONNECT_ERROR;
1097 if ( ld->ld_error ) {
1098 LDAP_FREE( ld->ld_error );
1100 ld->ld_error = LDAP_STRDUP(
1101 _("TLS: unable to get CN from peer certificate"));
1103 } else if (strcasecmp(name, buf) == 0 ) {
1106 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1107 char *domain = strchr(name, '.');
1113 dlen = sl - (domain-name);
1116 /* Is this a wildcard match? */
1117 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1123 if( ret == LDAP_LOCAL_ERROR ) {
1124 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1125 "common name in certificate (%s).\n",
1127 ret = LDAP_CONNECT_ERROR;
1128 if ( ld->ld_error ) {
1129 LDAP_FREE( ld->ld_error );
1131 ld->ld_error = LDAP_STRDUP(
1132 _("TLS: hostname does not match CN in peer certificate"));
1140 ldap_pvt_tls_get_peer_issuer( void *s )
1142 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1147 x = SSL_get_peer_certificate((SSL *)s);
1149 if (!x) return NULL;
1151 xn = X509_get_issuer_name(x);
1152 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1161 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1166 case LDAP_OPT_X_TLS_CACERTFILE:
1167 case LDAP_OPT_X_TLS_CACERTDIR:
1168 case LDAP_OPT_X_TLS_CERTFILE:
1169 case LDAP_OPT_X_TLS_KEYFILE:
1170 case LDAP_OPT_X_TLS_RANDOM_FILE:
1171 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1172 case LDAP_OPT_X_TLS_DHFILE:
1173 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1175 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1176 case LDAP_OPT_X_TLS:
1178 if ( strcasecmp( arg, "never" ) == 0 ) {
1179 i = LDAP_OPT_X_TLS_NEVER ;
1181 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1182 i = LDAP_OPT_X_TLS_DEMAND ;
1184 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1185 i = LDAP_OPT_X_TLS_ALLOW ;
1187 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1188 i = LDAP_OPT_X_TLS_TRY ;
1190 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1191 ( strcasecmp( arg, "on" ) == 0 ) ||
1192 ( strcasecmp( arg, "yes" ) == 0) ||
1193 ( strcasecmp( arg, "true" ) == 0 ) )
1195 i = LDAP_OPT_X_TLS_HARD ;
1199 return ldap_pvt_tls_set_option( ld, option, &i );
1202 #ifdef HAVE_OPENSSL_CRL
1203 case LDAP_OPT_X_TLS_CRLCHECK:
1205 if ( strcasecmp( arg, "none" ) == 0 ) {
1206 i = LDAP_OPT_X_TLS_CRL_NONE ;
1207 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1208 i = LDAP_OPT_X_TLS_CRL_PEER ;
1209 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1210 i = LDAP_OPT_X_TLS_CRL_ALL ;
1213 return ldap_pvt_tls_set_option( ld, option, &i );
1222 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1224 struct ldapoptions *lo;
1227 assert( LDAP_VALID( ld ) );
1229 if( !LDAP_VALID( ld ) ) {
1230 return LDAP_OPT_ERROR;
1233 lo = &ld->ld_options;
1236 /* Get pointer to global option structure */
1237 lo = LDAP_INT_GLOBAL_OPT();
1239 return LDAP_NO_MEMORY;
1244 case LDAP_OPT_X_TLS:
1245 *(int *)arg = lo->ldo_tls_mode;
1247 case LDAP_OPT_X_TLS_CTX:
1249 *(void **)arg = (void *) tls_def_ctx;
1251 *(void **)arg = lo->ldo_tls_ctx;
1254 case LDAP_OPT_X_TLS_CACERTFILE:
1255 *(char **)arg = tls_opt_cacertfile ?
1256 LDAP_STRDUP( tls_opt_cacertfile ) : NULL;
1258 case LDAP_OPT_X_TLS_CACERTDIR:
1259 *(char **)arg = tls_opt_cacertdir ?
1260 LDAP_STRDUP( tls_opt_cacertdir ) : NULL;
1262 case LDAP_OPT_X_TLS_CERTFILE:
1263 *(char **)arg = tls_opt_certfile ?
1264 LDAP_STRDUP( tls_opt_certfile ) : NULL;
1266 case LDAP_OPT_X_TLS_KEYFILE:
1267 *(char **)arg = tls_opt_keyfile ?
1268 LDAP_STRDUP( tls_opt_keyfile ) : NULL;
1270 case LDAP_OPT_X_TLS_DHFILE:
1271 *(char **)arg = tls_opt_dhfile ?
1272 LDAP_STRDUP( tls_opt_dhfile ) : NULL;
1274 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1275 *(int *)arg = tls_opt_require_cert;
1277 #ifdef HAVE_OPENSSL_CRL
1278 case LDAP_OPT_X_TLS_CRLCHECK:
1279 *(int *)arg = tls_opt_crlcheck;
1282 case LDAP_OPT_X_TLS_RANDOM_FILE:
1283 *(char **)arg = tls_opt_randfile ?
1284 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1286 case LDAP_OPT_X_TLS_SSL_CTX: {
1289 LDAPConn *conn = ld->ld_defconn;
1290 if ( conn != NULL ) {
1291 Sockbuf *sb = conn->lconn_sb;
1292 retval = ldap_pvt_tls_sb_ctx( sb );
1295 *(void **)arg = retval;
1298 case LDAP_OPT_X_TLS_CONNECT_CB:
1299 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1301 case LDAP_OPT_X_TLS_CONNECT_ARG:
1302 *(void **)arg = lo->ldo_tls_connect_arg;
1311 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1313 struct ldapoptions *lo;
1316 assert( LDAP_VALID( ld ) );
1318 if( !LDAP_VALID( ld ) ) {
1319 return LDAP_OPT_ERROR;
1322 lo = &ld->ld_options;
1325 /* Get pointer to global option structure */
1326 lo = LDAP_INT_GLOBAL_OPT();
1328 return LDAP_NO_MEMORY;
1333 case LDAP_OPT_X_TLS:
1334 switch( *(int *) arg ) {
1335 case LDAP_OPT_X_TLS_NEVER:
1336 case LDAP_OPT_X_TLS_DEMAND:
1337 case LDAP_OPT_X_TLS_ALLOW:
1338 case LDAP_OPT_X_TLS_TRY:
1339 case LDAP_OPT_X_TLS_HARD:
1341 lo->ldo_tls_mode = *(int *)arg;
1348 case LDAP_OPT_X_TLS_CTX:
1350 tls_def_ctx = (SSL_CTX *) arg;
1353 lo->ldo_tls_ctx = arg;
1356 case LDAP_OPT_X_TLS_CONNECT_CB:
1357 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1359 case LDAP_OPT_X_TLS_CONNECT_ARG:
1360 lo->ldo_tls_connect_arg = arg;
1369 case LDAP_OPT_X_TLS_CACERTFILE:
1370 if ( tls_opt_cacertfile ) LDAP_FREE( tls_opt_cacertfile );
1371 tls_opt_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1373 case LDAP_OPT_X_TLS_CACERTDIR:
1374 if ( tls_opt_cacertdir ) LDAP_FREE( tls_opt_cacertdir );
1375 tls_opt_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1377 case LDAP_OPT_X_TLS_CERTFILE:
1378 if ( tls_opt_certfile ) LDAP_FREE( tls_opt_certfile );
1379 tls_opt_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1381 case LDAP_OPT_X_TLS_KEYFILE:
1382 if ( tls_opt_keyfile ) LDAP_FREE( tls_opt_keyfile );
1383 tls_opt_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1385 case LDAP_OPT_X_TLS_DHFILE:
1386 if ( tls_opt_dhfile ) LDAP_FREE( tls_opt_dhfile );
1387 tls_opt_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1389 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1390 switch( *(int *) arg ) {
1391 case LDAP_OPT_X_TLS_NEVER:
1392 case LDAP_OPT_X_TLS_DEMAND:
1393 case LDAP_OPT_X_TLS_ALLOW:
1394 case LDAP_OPT_X_TLS_TRY:
1395 case LDAP_OPT_X_TLS_HARD:
1396 tls_opt_require_cert = * (int *) arg;
1400 #ifdef HAVE_OPENSSL_CRL
1401 case LDAP_OPT_X_TLS_CRLCHECK:
1402 switch( *(int *) arg ) {
1403 case LDAP_OPT_X_TLS_CRL_NONE:
1404 case LDAP_OPT_X_TLS_CRL_PEER:
1405 case LDAP_OPT_X_TLS_CRL_ALL:
1406 tls_opt_crlcheck = * (int *) arg;
1411 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1412 if ( tls_opt_ciphersuite ) LDAP_FREE( tls_opt_ciphersuite );
1413 tls_opt_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1415 case LDAP_OPT_X_TLS_RANDOM_FILE:
1416 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1417 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1426 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1428 Sockbuf *sb = conn->lconn_sb;
1433 host = srv->lud_host;
1435 host = conn->lconn_server->lud_host;
1438 /* avoid NULL host */
1439 if( host == NULL ) {
1443 (void) ldap_pvt_tls_init();
1446 * Fortunately, the lib uses blocking io...
1448 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1449 ld->ld_errno = LDAP_CONNECT_ERROR;
1450 return (ld->ld_errno);
1453 ssl = ldap_pvt_tls_sb_ctx( sb );
1454 assert( ssl != NULL );
1457 * compare host with name(s) in certificate
1459 if (tls_opt_require_cert != LDAP_OPT_X_TLS_NEVER) {
1460 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1461 if (ld->ld_errno != LDAP_SUCCESS) {
1462 return ld->ld_errno;
1466 return LDAP_SUCCESS;
1469 /* Derived from openssl/apps/s_cb.c */
1471 tls_info_cb( const SSL *ssl, int where, int ret )
1475 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1477 w = where & ~SSL_ST_MASK;
1478 if ( w & SSL_ST_CONNECT ) {
1480 } else if ( w & SSL_ST_ACCEPT ) {
1488 state = LDAP_STRDUP( state );
1492 if ( where & SSL_CB_LOOP ) {
1493 Debug( LDAP_DEBUG_TRACE,
1494 "TLS trace: %s:%s\n",
1497 } else if ( where & SSL_CB_ALERT ) {
1498 char *atype = (char *) SSL_alert_type_string_long( ret );
1499 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1500 op = ( where & SSL_CB_READ ) ? "read" : "write";
1503 atype = LDAP_STRDUP( atype );
1507 adesc = LDAP_STRDUP( adesc );
1511 Debug( LDAP_DEBUG_TRACE,
1512 "TLS trace: SSL3 alert %s:%s:%s\n",
1515 if ( atype ) LDAP_FREE( atype );
1516 if ( adesc ) LDAP_FREE( adesc );
1518 } else if ( where & SSL_CB_EXIT ) {
1520 Debug( LDAP_DEBUG_TRACE,
1521 "TLS trace: %s:failed in %s\n",
1523 } else if ( ret < 0 ) {
1524 Debug( LDAP_DEBUG_TRACE,
1525 "TLS trace: %s:error in %s\n",
1530 if ( state ) LDAP_FREE( state );
1535 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1544 char *certerr = NULL;
1546 cert = X509_STORE_CTX_get_current_cert( ctx );
1547 errnum = X509_STORE_CTX_get_error( ctx );
1548 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1551 * X509_get_*_name return pointers to the internal copies of
1552 * those things requested. So do not free them.
1554 subject = X509_get_subject_name( cert );
1555 issuer = X509_get_issuer_name( cert );
1556 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1557 sname = X509_NAME_oneline( subject, NULL, 0 );
1558 iname = X509_NAME_oneline( issuer, NULL, 0 );
1559 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1561 if ( sname ) __etoa( sname );
1562 if ( iname ) __etoa( iname );
1564 certerr = LDAP_STRDUP( certerr );
1568 Debug( LDAP_DEBUG_TRACE,
1569 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1571 sname ? sname : "-unknown-" );
1572 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1574 Debug( LDAP_DEBUG_ANY,
1575 "TLS certificate verification: Error, %s\n",
1579 CRYPTO_free ( sname );
1581 CRYPTO_free ( iname );
1583 if ( certerr ) LDAP_FREE( certerr );
1589 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1591 (void) tls_verify_cb( ok, ctx );
1595 /* Inspired by ERR_print_errors in OpenSSL */
1597 tls_report_error( void )
1604 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1605 ERR_error_string_n( l, buf, sizeof( buf ) );
1608 file = LDAP_STRDUP( file );
1609 __etoa( (char *)file );
1613 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1616 if ( file ) LDAP_FREE( (void *)file );
1622 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1626 /* FIXME: Pregenerate the key on startup */
1627 /* FIXME: Who frees the key? */
1628 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1631 Debug( LDAP_DEBUG_ANY,
1632 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1633 key_length, is_export ? "export" : "domestic", 0 );
1640 tls_seed_PRNG( const char *randfile )
1642 #ifndef URANDOM_DEVICE
1643 /* no /dev/urandom (or equiv) */
1645 char buffer[MAXPATHLEN];
1647 if (randfile == NULL) {
1648 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1649 * If $HOME is not set or buffer too small to hold the pathname,
1650 * an error occurs. - From RAND_file_name() man page.
1651 * The fact is that when $HOME is NULL, .rnd is used.
1653 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1655 } else if (RAND_egd(randfile) > 0) {
1660 if (randfile == NULL) {
1661 Debug( LDAP_DEBUG_ANY,
1662 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1667 total = RAND_load_file(randfile, -1);
1669 if (RAND_status() == 0) {
1670 Debug( LDAP_DEBUG_ANY,
1671 "TLS: PRNG not been seeded with enough data\n",
1676 /* assume if there was enough bits to seed that it's okay
1677 * to write derived bits to the file
1679 RAND_write_file(randfile);
1693 /* From the OpenSSL 0.9.7 distro */
1694 static const char dhpem512[] =
1695 "-----BEGIN DH PARAMETERS-----\n\
1696 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1697 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1698 -----END DH PARAMETERS-----\n";
1700 static const char dhpem1024[] =
1701 "-----BEGIN DH PARAMETERS-----\n\
1702 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1703 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1704 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1705 -----END DH PARAMETERS-----\n";
1707 static const char dhpem2048[] =
1708 "-----BEGIN DH PARAMETERS-----\n\
1709 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1710 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1711 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1712 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1713 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1714 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1715 -----END DH PARAMETERS-----\n";
1717 static const char dhpem4096[] =
1718 "-----BEGIN DH PARAMETERS-----\n\
1719 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1720 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1721 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1722 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1723 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1724 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1725 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1726 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1727 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1728 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1729 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1730 -----END DH PARAMETERS-----\n";
1732 static const struct dhinfo dhpem[] = {
1733 { 512, dhpem512, sizeof(dhpem512) },
1734 { 1024, dhpem1024, sizeof(dhpem1024) },
1735 { 2048, dhpem2048, sizeof(dhpem2048) },
1736 { 4096, dhpem4096, sizeof(dhpem4096) },
1741 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1743 struct dhplist *p = NULL;
1748 /* Do we have params of this length already? */
1749 #ifdef LDAP_R_COMPILE
1750 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1752 for ( p = dhparams; p; p=p->next ) {
1753 if ( p->keylength == key_length ) {
1754 #ifdef LDAP_R_COMPILE
1755 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1761 /* No - check for hardcoded params */
1763 for (i=0; dhpem[i].keylength; i++) {
1764 if ( dhpem[i].keylength == key_length ) {
1765 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1771 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1775 /* Generating on the fly is expensive/slow... */
1777 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1780 p = LDAP_MALLOC( sizeof(struct dhplist) );
1782 p->keylength = key_length;
1789 #ifdef LDAP_R_COMPILE
1790 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1797 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1802 if (HAS_TLS( sb )) {
1803 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1812 ldap_pvt_tls_get_strength( void *s )
1817 c = SSL_get_current_cipher((SSL *)s);
1818 return SSL_CIPHER_get_bits(c, NULL);
1826 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1833 x = SSL_get_certificate((SSL *)s);
1835 if (!x) return LDAP_INVALID_CREDENTIALS;
1837 xn = X509_get_subject_name(x);
1838 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1841 return LDAP_NOT_SUPPORTED;
1846 ldap_start_tls( LDAP *ld,
1847 LDAPControl **serverctrls,
1848 LDAPControl **clientctrls,
1851 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1852 NULL, serverctrls, clientctrls, msgidp );
1856 ldap_install_tls( LDAP *ld )
1859 return LDAP_NOT_SUPPORTED;
1861 if ( ldap_tls_inplace( ld ) ) {
1862 return LDAP_LOCAL_ERROR;
1865 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1870 ldap_start_tls_s ( LDAP *ld,
1871 LDAPControl **serverctrls,
1872 LDAPControl **clientctrls )
1875 return LDAP_NOT_SUPPORTED;
1878 char *rspoid = NULL;
1879 struct berval *rspdata = NULL;
1881 /* XXYYZ: this initiates operation only on default connection! */
1883 if ( ldap_tls_inplace( ld ) ) {
1884 return LDAP_LOCAL_ERROR;
1887 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1888 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1890 if ( rspoid != NULL ) {
1894 if ( rspdata != NULL ) {
1895 ber_bvfree( rspdata );
1898 if ( rc == LDAP_SUCCESS ) {
1899 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );