1 /* tls.c - Handle tls/ssl using SSLeay or OpenSSL. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2006 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
18 #include "ldap_config.h"
22 #include <ac/stdlib.h>
24 #include <ac/socket.h>
25 #include <ac/string.h>
28 #include <ac/unistd.h>
30 #include <ac/dirent.h>
37 #include <ldap_pvt_thread.h>
40 #ifdef HAVE_OPENSSL_SSL_H
41 #include <openssl/ssl.h>
42 #include <openssl/x509v3.h>
43 #include <openssl/err.h>
44 #include <openssl/rand.h>
45 #include <openssl/safestack.h>
46 #elif defined( HAVE_SSL_H )
50 static int tls_opt_trace = 1;
51 static char *tls_opt_randfile = NULL;
53 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
54 (void *)&sb_tls_sbio )
56 static void tls_report_error( void );
58 static void tls_info_cb( const SSL *ssl, int where, int ret );
59 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
60 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
61 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
62 static STACK_OF(X509_NAME) * get_ca_list( char * bundle, char * dir );
64 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
66 typedef struct dhplist {
72 static dhplist *dhparams;
74 static int tls_seed_PRNG( const char *randfile );
78 * provide mutexes for the SSLeay library.
80 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
82 static void tls_locking_cb( int mode, int type, const char *file, int line )
84 if ( mode & CRYPTO_LOCK ) {
85 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
87 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
92 * an extra mutex for the default ctx.
95 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
96 static ldap_pvt_thread_mutex_t tls_connect_mutex;
98 static void tls_init_threads( void )
102 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
103 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
105 CRYPTO_set_locking_callback( tls_locking_cb );
106 /* FIXME: the thread id should be added somehow... */
108 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
109 ldap_pvt_thread_mutex_init( &tls_connect_mutex );
111 #endif /* LDAP_R_COMPILE */
114 ldap_int_tls_destroy( struct ldapoptions *lo )
116 if ( lo->ldo_tls_ctx ) {
117 SSL_CTX_free( lo->ldo_tls_ctx );
118 lo->ldo_tls_ctx = NULL;
121 if ( lo->ldo_tls_certfile ) {
122 LDAP_FREE( lo->ldo_tls_certfile );
123 lo->ldo_tls_certfile = NULL;
125 if ( lo->ldo_tls_keyfile ) {
126 LDAP_FREE( lo->ldo_tls_keyfile );
127 lo->ldo_tls_keyfile = NULL;
129 if ( lo->ldo_tls_dhfile ) {
130 LDAP_FREE( lo->ldo_tls_dhfile );
131 lo->ldo_tls_dhfile = NULL;
133 if ( lo->ldo_tls_cacertfile ) {
134 LDAP_FREE( lo->ldo_tls_cacertfile );
135 lo->ldo_tls_cacertfile = NULL;
137 if ( lo->ldo_tls_cacertdir ) {
138 LDAP_FREE( lo->ldo_tls_cacertdir );
139 lo->ldo_tls_cacertdir = NULL;
141 if ( lo->ldo_tls_ciphersuite ) {
142 LDAP_FREE( lo->ldo_tls_ciphersuite );
143 lo->ldo_tls_ciphersuite = NULL;
148 * Tear down the TLS subsystem. Should only be called once.
151 ldap_pvt_tls_destroy( void )
153 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
155 ldap_int_tls_destroy( lo );
161 if ( tls_opt_randfile ) {
162 LDAP_FREE( tls_opt_randfile );
163 tls_opt_randfile = NULL;
168 * Initialize TLS subsystem. Should be called only once.
171 ldap_pvt_tls_init( void )
173 static int tls_initialized = 0;
175 if ( tls_initialized++ ) return 0;
179 char *file = LDAP_STRDUP( tls_opt_randfile );
180 if ( file ) __atoe( file );
181 (void) tls_seed_PRNG( file );
185 (void) tls_seed_PRNG( tls_opt_randfile );
188 #ifdef LDAP_R_COMPILE
192 SSL_load_error_strings();
193 SSLeay_add_ssl_algorithms();
195 /* FIXME: mod_ssl does this */
196 X509V3_add_standard_extensions();
201 * initialize a new TLS context
204 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
206 STACK_OF(X509_NAME) *calist;
208 char *ciphersuite = lo->ldo_tls_ciphersuite;
209 char *cacertfile = lo->ldo_tls_cacertfile;
210 char *cacertdir = lo->ldo_tls_cacertdir;
211 char *certfile = lo->ldo_tls_certfile;
212 char *keyfile = lo->ldo_tls_keyfile;
213 char *dhfile = lo->ldo_tls_dhfile;
215 if ( lo->ldo_tls_ctx )
220 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
221 /* minimum configuration not provided */
222 return LDAP_NOT_SUPPORTED;
226 /* This ASCII/EBCDIC handling is a real pain! */
228 ciphersuite = LDAP_STRDUP( ciphersuite );
229 __atoe( ciphersuite );
232 cacertfile = LDAP_STRDUP( cacertfile );
233 __atoe( cacertfile );
236 cacertdir = LDAP_STRDUP( cacertdir );
240 certfile = LDAP_STRDUP( certfile );
244 keyfile = LDAP_STRDUP( keyfile );
248 dhfile = LDAP_STRDUP( dhfile );
252 lo->ldo_tls_ctx = SSL_CTX_new( SSLv23_method() );
253 if ( lo->ldo_tls_ctx == NULL ) {
254 Debug( LDAP_DEBUG_ANY,
255 "TLS: could not allocate default ctx (%lu).\n",
256 ERR_peek_error(),0,0);
262 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
263 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
266 if ( lo->ldo_tls_ciphersuite &&
267 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
269 Debug( LDAP_DEBUG_ANY,
270 "TLS: could not set cipher list %s.\n",
271 lo->ldo_tls_ciphersuite, 0, 0 );
277 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
278 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
279 cacertfile, cacertdir ) ||
280 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
282 Debug( LDAP_DEBUG_ANY, "TLS: "
283 "could not load verify locations (file:`%s',dir:`%s').\n",
284 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
285 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
293 /* List of CA names to send to a client */
294 calist = get_ca_list( cacertfile, cacertdir );
296 Debug( LDAP_DEBUG_ANY, "TLS: "
297 "could not load client CA list (file:`%s',dir:`%s').\n",
298 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
299 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
306 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
310 if ( lo->ldo_tls_certfile &&
311 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
312 certfile, SSL_FILETYPE_PEM ) )
314 Debug( LDAP_DEBUG_ANY,
315 "TLS: could not use certificate `%s'.\n",
316 lo->ldo_tls_certfile,0,0);
322 /* Key validity is checked automatically if cert has already been set */
323 if ( lo->ldo_tls_keyfile &&
324 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
325 keyfile, SSL_FILETYPE_PEM ) )
327 Debug( LDAP_DEBUG_ANY,
328 "TLS: could not use key file `%s'.\n",
329 lo->ldo_tls_keyfile,0,0);
335 if ( lo->ldo_tls_dhfile ) {
340 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
341 Debug( LDAP_DEBUG_ANY,
342 "TLS: could not use DH parameters file `%s'.\n",
343 lo->ldo_tls_dhfile,0,0);
348 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
349 p = LDAP_MALLOC( sizeof(dhplist) );
351 p->keylength = DH_size( dh ) * 8;
360 if ( tls_opt_trace ) {
361 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
365 if ( lo->ldo_tls_require_cert ) {
367 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
368 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
369 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
373 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
374 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
375 tls_verify_ok : tls_verify_cb );
376 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
377 if ( lo->ldo_tls_dhfile ) {
378 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
380 #ifdef HAVE_OPENSSL_CRL
381 if ( lo->ldo_tls_crlcheck ) {
382 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
383 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
384 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
385 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
386 X509_STORE_set_flags( x509_s,
387 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
393 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
394 SSL_CTX_free( lo->ldo_tls_ctx );
395 lo->ldo_tls_ctx = NULL;
398 LDAP_FREE( ciphersuite );
399 LDAP_FREE( cacertfile );
400 LDAP_FREE( cacertdir );
401 LDAP_FREE( certfile );
402 LDAP_FREE( keyfile );
409 * initialize the default context
412 ldap_pvt_tls_init_def_ctx( int is_server )
414 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
416 #ifdef LDAP_R_COMPILE
417 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
419 rc = ldap_int_tls_init_ctx( lo, is_server );
420 #ifdef LDAP_R_COMPILE
421 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
426 static STACK_OF(X509_NAME) *
427 get_ca_list( char * bundle, char * dir )
429 STACK_OF(X509_NAME) *ca_list = NULL;
432 ca_list = SSL_load_client_CA_file( bundle );
434 #if defined(HAVE_DIRENT_H) || defined(dirent)
439 ca_list = sk_X509_NAME_new_null();
442 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
444 sk_X509_NAME_free( ca_list );
453 alloc_handle( void *ctx_arg, int is_server )
459 ctx = (SSL_CTX *) ctx_arg;
461 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
462 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
463 ctx = lo->ldo_tls_ctx;
466 ssl = SSL_new( ctx );
468 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
475 update_flags( Sockbuf *sb, SSL * ssl, int rc )
477 int err = SSL_get_error(ssl, rc);
479 sb->sb_trans_needs_read = 0;
480 sb->sb_trans_needs_write = 0;
482 if (err == SSL_ERROR_WANT_READ) {
483 sb->sb_trans_needs_read = 1;
486 } else if (err == SSL_ERROR_WANT_WRITE) {
487 sb->sb_trans_needs_write = 1;
490 } else if (err == SSL_ERROR_WANT_CONNECT) {
497 * TLS support for LBER Sockbufs
502 Sockbuf_IO_Desc *sbiod;
505 static BIO_METHOD sb_tls_bio_method;
508 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
513 assert( sbiod != NULL );
515 p = LBER_MALLOC( sizeof( *p ) );
522 bio = BIO_new( &sb_tls_bio_method );
523 bio->ptr = (void *)p;
524 SSL_set_bio( p->ssl, bio, bio );
525 sbiod->sbiod_pvt = p;
530 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
534 assert( sbiod != NULL );
535 assert( sbiod->sbiod_pvt != NULL );
537 p = (struct tls_data *)sbiod->sbiod_pvt;
539 LBER_FREE( sbiod->sbiod_pvt );
540 sbiod->sbiod_pvt = NULL;
545 sb_tls_close( Sockbuf_IO_Desc *sbiod )
549 assert( sbiod != NULL );
550 assert( sbiod->sbiod_pvt != NULL );
552 p = (struct tls_data *)sbiod->sbiod_pvt;
553 SSL_shutdown( p->ssl );
558 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
562 assert( sbiod != NULL );
563 assert( sbiod->sbiod_pvt != NULL );
565 p = (struct tls_data *)sbiod->sbiod_pvt;
567 if ( opt == LBER_SB_OPT_GET_SSL ) {
568 *((SSL **)arg) = p->ssl;
571 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
572 if( SSL_pending( p->ssl ) > 0 ) {
577 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
581 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
587 assert( sbiod != NULL );
588 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
590 p = (struct tls_data *)sbiod->sbiod_pvt;
592 ret = SSL_read( p->ssl, (char *)buf, len );
594 errno = WSAGetLastError();
596 err = SSL_get_error( p->ssl, ret );
597 if (err == SSL_ERROR_WANT_READ ) {
598 sbiod->sbiod_sb->sb_trans_needs_read = 1;
599 sock_errset(EWOULDBLOCK);
602 sbiod->sbiod_sb->sb_trans_needs_read = 0;
607 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
613 assert( sbiod != NULL );
614 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
616 p = (struct tls_data *)sbiod->sbiod_pvt;
618 ret = SSL_write( p->ssl, (char *)buf, len );
620 errno = WSAGetLastError();
622 err = SSL_get_error( p->ssl, ret );
623 if (err == SSL_ERROR_WANT_WRITE ) {
624 sbiod->sbiod_sb->sb_trans_needs_write = 1;
625 sock_errset(EWOULDBLOCK);
628 sbiod->sbiod_sb->sb_trans_needs_write = 0;
633 static Sockbuf_IO sb_tls_sbio =
635 sb_tls_setup, /* sbi_setup */
636 sb_tls_remove, /* sbi_remove */
637 sb_tls_ctrl, /* sbi_ctrl */
638 sb_tls_read, /* sbi_read */
639 sb_tls_write, /* sbi_write */
640 sb_tls_close /* sbi_close */
644 sb_tls_bio_create( BIO *b ) {
653 sb_tls_bio_destroy( BIO *b )
655 if ( b == NULL ) return 0;
657 b->ptr = NULL; /* sb_tls_remove() will free it */
664 sb_tls_bio_read( BIO *b, char *buf, int len )
669 if ( buf == NULL || len <= 0 ) return 0;
671 p = (struct tls_data *)b->ptr;
673 if ( p == NULL || p->sbiod == NULL ) {
677 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
679 BIO_clear_retry_flags( b );
681 int err = sock_errno();
682 if ( err == EAGAIN || err == EWOULDBLOCK ) {
683 BIO_set_retry_read( b );
691 sb_tls_bio_write( BIO *b, const char *buf, int len )
696 if ( buf == NULL || len <= 0 ) return 0;
698 p = (struct tls_data *)b->ptr;
700 if ( p == NULL || p->sbiod == NULL ) {
704 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
706 BIO_clear_retry_flags( b );
708 int err = sock_errno();
709 if ( err == EAGAIN || err == EWOULDBLOCK ) {
710 BIO_set_retry_write( b );
718 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
720 if ( cmd == BIO_CTRL_FLUSH ) {
721 /* The OpenSSL library needs this */
728 sb_tls_bio_gets( BIO *b, char *buf, int len )
734 sb_tls_bio_puts( BIO *b, const char *str )
736 return sb_tls_bio_write( b, str, strlen( str ) );
739 static BIO_METHOD sb_tls_bio_method =
741 ( 100 | 0x400 ), /* it's a source/sink BIO */
753 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
754 * a SSL_CTX * or NULL, in which case the default ctx is used.
758 * 0 - Success. Connection is ready for communication.
759 * <0 - Error. Can't create a TLS stream.
760 * >0 - Partial success.
761 * Do a select (using information from lber_pvt_sb_needs_{read,write}
766 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
768 Sockbuf *sb = conn->lconn_sb;
772 if ( HAS_TLS( sb ) ) {
773 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
776 struct ldapoptions *lo;
779 ctx = ld->ld_options.ldo_tls_ctx;
781 ssl = alloc_handle( ctx, 0 );
783 if ( ssl == NULL ) return -1;
786 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
787 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
789 ber_sockbuf_add_io( sb, &sb_tls_sbio,
790 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
792 lo = LDAP_INT_GLOBAL_OPT();
794 ctx = lo->ldo_tls_ctx;
795 ld->ld_options.ldo_tls_ctx = ctx;
796 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
798 if ( ld->ld_options.ldo_tls_connect_cb )
799 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
800 ld->ld_options.ldo_tls_connect_arg );
801 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
802 ld->ld_options.ldo_tls_connect_cb )
803 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
806 err = SSL_connect( ssl );
809 errno = WSAGetLastError();
813 if ( update_flags( sb, ssl, err )) {
817 if ((err = ERR_peek_error())) {
820 if ( ld->ld_error ) {
821 LDAP_FREE( ld->ld_error );
823 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
825 if ( ld->ld_error ) __etoa(ld->ld_error);
829 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
830 ld->ld_error ? ld->ld_error : "" ,0,0);
832 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
833 LBER_SBIOD_LEVEL_TRANSPORT );
835 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
836 LBER_SBIOD_LEVEL_TRANSPORT );
845 * Call this to do a TLS accept on a sockbuf.
846 * Everything else is the same as with tls_connect.
849 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
854 if ( HAS_TLS( sb ) ) {
855 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
858 ssl = alloc_handle( ctx_arg, 1 );
859 if ( ssl == NULL ) return -1;
862 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
863 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
865 ber_sockbuf_add_io( sb, &sb_tls_sbio,
866 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
869 #ifdef LDAP_R_COMPILE
870 ldap_pvt_thread_mutex_lock( &tls_connect_mutex );
872 err = SSL_accept( ssl );
873 #ifdef LDAP_R_COMPILE
874 ldap_pvt_thread_mutex_unlock( &tls_connect_mutex );
878 errno = WSAGetLastError();
881 if ( update_flags( sb, ssl, err )) return 1;
883 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
886 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
887 LBER_SBIOD_LEVEL_TRANSPORT );
889 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
890 LBER_SBIOD_LEVEL_TRANSPORT );
899 ldap_pvt_tls_inplace ( Sockbuf *sb )
901 return HAS_TLS( sb ) ? 1 : 0;
905 ldap_tls_inplace( LDAP *ld )
909 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
910 sb = ld->ld_defconn->lconn_sb;
912 } else if ( ld->ld_sb ) {
919 return ldap_pvt_tls_inplace( sb );
923 tls_get_cert( SSL *s )
925 /* If peer cert was bad, treat as if no cert was given */
926 if (SSL_get_verify_result(s)) {
927 /* If we can send an alert, do so */
928 if (SSL_version(s) != SSL2_VERSION) {
929 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
933 return SSL_get_peer_certificate(s);
937 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
938 LDAPDN_rewrite_dummy *func, unsigned flags )
944 x = tls_get_cert((SSL *)s);
946 if (!x) return LDAP_INVALID_CREDENTIALS;
948 xn = X509_get_subject_name(x);
949 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
955 ldap_pvt_tls_get_peer_hostname( void *s )
962 x = tls_get_cert((SSL *)s);
965 xn = X509_get_subject_name(x);
967 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
973 p = LDAP_STRDUP(buf);
978 /* what kind of hostname were we given? */
984 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
986 int i, ret = LDAP_LOCAL_ERROR;
992 struct in6_addr addr;
997 if( ldap_int_hostname &&
998 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1000 name = ldap_int_hostname;
1005 x = tls_get_cert((SSL *)s);
1007 Debug( LDAP_DEBUG_ANY,
1008 "TLS: unable to get peer certificate.\n",
1010 /* If this was a fatal condition, things would have
1011 * aborted long before now.
1013 return LDAP_SUCCESS;
1016 #ifdef LDAP_PF_INET6
1017 if (name[0] == '[' && strchr(name, ']')) {
1018 char *n2 = ldap_strdup(name+1);
1019 *strchr(n2, ']') = 2;
1020 if (inet_pton(AF_INET6, n2, &addr))
1025 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1026 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1029 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1032 STACK_OF(GENERAL_NAME) *alt;
1034 ex = X509_get_ext(x, i);
1035 alt = X509V3_EXT_d2i(ex);
1037 int n, len1 = 0, len2 = 0;
1038 char *domain = NULL;
1041 if (ntype == IS_DNS) {
1042 len1 = strlen(name);
1043 domain = strchr(name, '.');
1045 len2 = len1 - (domain-name);
1048 n = sk_GENERAL_NAME_num(alt);
1049 for (i=0; i<n; i++) {
1052 gn = sk_GENERAL_NAME_value(alt, i);
1053 if (gn->type == GEN_DNS) {
1054 if (ntype != IS_DNS) continue;
1056 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1057 sl = ASN1_STRING_length(gn->d.ia5);
1060 if (sl == 0) continue;
1062 /* Is this an exact match? */
1063 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1067 /* Is this a wildcard match? */
1068 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1069 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1074 } else if (gn->type == GEN_IPADD) {
1075 if (ntype == IS_DNS) continue;
1077 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1078 sl = ASN1_STRING_length(gn->d.ia5);
1080 #ifdef LDAP_PF_INET6
1081 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1085 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1088 if (!memcmp(sn, &addr, sl)) {
1094 GENERAL_NAMES_free(alt);
1095 if (i < n) { /* Found a match */
1101 if (ret != LDAP_SUCCESS) {
1106 xn = X509_get_subject_name(x);
1107 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1108 buf, sizeof(buf)) == -1)
1110 Debug( LDAP_DEBUG_ANY,
1111 "TLS: unable to get common name from peer certificate.\n",
1113 ret = LDAP_CONNECT_ERROR;
1114 if ( ld->ld_error ) {
1115 LDAP_FREE( ld->ld_error );
1117 ld->ld_error = LDAP_STRDUP(
1118 _("TLS: unable to get CN from peer certificate"));
1120 } else if (strcasecmp(name, buf) == 0 ) {
1123 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1124 char *domain = strchr(name, '.');
1130 dlen = sl - (domain-name);
1133 /* Is this a wildcard match? */
1134 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1140 if( ret == LDAP_LOCAL_ERROR ) {
1141 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1142 "common name in certificate (%s).\n",
1144 ret = LDAP_CONNECT_ERROR;
1145 if ( ld->ld_error ) {
1146 LDAP_FREE( ld->ld_error );
1148 ld->ld_error = LDAP_STRDUP(
1149 _("TLS: hostname does not match CN in peer certificate"));
1157 ldap_pvt_tls_get_peer_issuer( void *s )
1159 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1164 x = SSL_get_peer_certificate((SSL *)s);
1166 if (!x) return NULL;
1168 xn = X509_get_issuer_name(x);
1169 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1178 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1183 case LDAP_OPT_X_TLS_CACERTFILE:
1184 case LDAP_OPT_X_TLS_CACERTDIR:
1185 case LDAP_OPT_X_TLS_CERTFILE:
1186 case LDAP_OPT_X_TLS_KEYFILE:
1187 case LDAP_OPT_X_TLS_RANDOM_FILE:
1188 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1189 case LDAP_OPT_X_TLS_DHFILE:
1190 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1192 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1193 case LDAP_OPT_X_TLS:
1195 if ( strcasecmp( arg, "never" ) == 0 ) {
1196 i = LDAP_OPT_X_TLS_NEVER ;
1198 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1199 i = LDAP_OPT_X_TLS_DEMAND ;
1201 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1202 i = LDAP_OPT_X_TLS_ALLOW ;
1204 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1205 i = LDAP_OPT_X_TLS_TRY ;
1207 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1208 ( strcasecmp( arg, "on" ) == 0 ) ||
1209 ( strcasecmp( arg, "yes" ) == 0) ||
1210 ( strcasecmp( arg, "true" ) == 0 ) )
1212 i = LDAP_OPT_X_TLS_HARD ;
1216 return ldap_pvt_tls_set_option( ld, option, &i );
1219 #ifdef HAVE_OPENSSL_CRL
1220 case LDAP_OPT_X_TLS_CRLCHECK:
1222 if ( strcasecmp( arg, "none" ) == 0 ) {
1223 i = LDAP_OPT_X_TLS_CRL_NONE ;
1224 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1225 i = LDAP_OPT_X_TLS_CRL_PEER ;
1226 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1227 i = LDAP_OPT_X_TLS_CRL_ALL ;
1230 return ldap_pvt_tls_set_option( ld, option, &i );
1239 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1241 struct ldapoptions *lo;
1244 assert( LDAP_VALID( ld ) );
1246 if( !LDAP_VALID( ld ) ) {
1247 return LDAP_OPT_ERROR;
1250 lo = &ld->ld_options;
1253 /* Get pointer to global option structure */
1254 lo = LDAP_INT_GLOBAL_OPT();
1256 return LDAP_NO_MEMORY;
1261 case LDAP_OPT_X_TLS:
1262 *(int *)arg = lo->ldo_tls_mode;
1264 case LDAP_OPT_X_TLS_CTX:
1265 *(void **)arg = lo->ldo_tls_ctx;
1266 if ( lo->ldo_tls_ctx ) {
1267 SSL_CTX *ctx = lo->ldo_tls_ctx;
1268 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
1271 case LDAP_OPT_X_TLS_CACERTFILE:
1272 *(char **)arg = lo->ldo_tls_cacertfile ?
1273 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
1275 case LDAP_OPT_X_TLS_CACERTDIR:
1276 *(char **)arg = lo->ldo_tls_cacertdir ?
1277 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
1279 case LDAP_OPT_X_TLS_CERTFILE:
1280 *(char **)arg = lo->ldo_tls_certfile ?
1281 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
1283 case LDAP_OPT_X_TLS_KEYFILE:
1284 *(char **)arg = lo->ldo_tls_keyfile ?
1285 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
1287 case LDAP_OPT_X_TLS_DHFILE:
1288 *(char **)arg = lo->ldo_tls_dhfile ?
1289 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
1291 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1292 *(int *)arg = lo->ldo_tls_require_cert;
1294 #ifdef HAVE_OPENSSL_CRL
1295 case LDAP_OPT_X_TLS_CRLCHECK:
1296 *(int *)arg = lo->ldo_tls_crlcheck;
1299 case LDAP_OPT_X_TLS_RANDOM_FILE:
1300 *(char **)arg = tls_opt_randfile ?
1301 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1303 case LDAP_OPT_X_TLS_SSL_CTX: {
1306 LDAPConn *conn = ld->ld_defconn;
1307 if ( conn != NULL ) {
1308 Sockbuf *sb = conn->lconn_sb;
1309 retval = ldap_pvt_tls_sb_ctx( sb );
1312 *(void **)arg = retval;
1315 case LDAP_OPT_X_TLS_CONNECT_CB:
1316 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1318 case LDAP_OPT_X_TLS_CONNECT_ARG:
1319 *(void **)arg = lo->ldo_tls_connect_arg;
1328 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1330 struct ldapoptions *lo;
1333 assert( LDAP_VALID( ld ) );
1335 if( !LDAP_VALID( ld ) ) {
1336 return LDAP_OPT_ERROR;
1339 lo = &ld->ld_options;
1342 /* Get pointer to global option structure */
1343 lo = LDAP_INT_GLOBAL_OPT();
1345 return LDAP_NO_MEMORY;
1350 case LDAP_OPT_X_TLS:
1351 if ( !arg ) return -1;
1353 switch( *(int *) arg ) {
1354 case LDAP_OPT_X_TLS_NEVER:
1355 case LDAP_OPT_X_TLS_DEMAND:
1356 case LDAP_OPT_X_TLS_ALLOW:
1357 case LDAP_OPT_X_TLS_TRY:
1358 case LDAP_OPT_X_TLS_HARD:
1360 lo->ldo_tls_mode = *(int *)arg;
1367 case LDAP_OPT_X_TLS_CTX:
1368 if ( lo->ldo_tls_ctx )
1369 SSL_CTX_free( lo->ldo_tls_ctx );
1370 lo->ldo_tls_ctx = arg;
1371 CRYPTO_add( &((SSL_CTX *)arg)->references, 1, CRYPTO_LOCK_SSL_CTX );
1373 case LDAP_OPT_X_TLS_CONNECT_CB:
1374 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1376 case LDAP_OPT_X_TLS_CONNECT_ARG:
1377 lo->ldo_tls_connect_arg = arg;
1379 case LDAP_OPT_X_TLS_CACERTFILE:
1380 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
1381 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1383 case LDAP_OPT_X_TLS_CACERTDIR:
1384 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
1385 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1387 case LDAP_OPT_X_TLS_CERTFILE:
1388 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
1389 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1391 case LDAP_OPT_X_TLS_KEYFILE:
1392 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
1393 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1395 case LDAP_OPT_X_TLS_DHFILE:
1396 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
1397 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1399 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1400 if ( !arg ) return -1;
1401 switch( *(int *) arg ) {
1402 case LDAP_OPT_X_TLS_NEVER:
1403 case LDAP_OPT_X_TLS_DEMAND:
1404 case LDAP_OPT_X_TLS_ALLOW:
1405 case LDAP_OPT_X_TLS_TRY:
1406 case LDAP_OPT_X_TLS_HARD:
1407 lo->ldo_tls_require_cert = * (int *) arg;
1411 #ifdef HAVE_OPENSSL_CRL
1412 case LDAP_OPT_X_TLS_CRLCHECK:
1413 if ( !arg ) return -1;
1414 switch( *(int *) arg ) {
1415 case LDAP_OPT_X_TLS_CRL_NONE:
1416 case LDAP_OPT_X_TLS_CRL_PEER:
1417 case LDAP_OPT_X_TLS_CRL_ALL:
1418 lo->ldo_tls_crlcheck = * (int *) arg;
1423 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1424 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
1425 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1428 case LDAP_OPT_X_TLS_RANDOM_FILE:
1431 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1432 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1435 case LDAP_OPT_X_TLS_NEWCTX:
1436 if ( !arg ) return -1;
1437 if ( lo->ldo_tls_ctx )
1438 SSL_CTX_free( lo->ldo_tls_ctx );
1439 lo->ldo_tls_ctx = NULL;
1440 return ldap_int_tls_init_ctx( lo, *(int *)arg );
1448 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1450 Sockbuf *sb = conn->lconn_sb;
1455 host = srv->lud_host;
1457 host = conn->lconn_server->lud_host;
1460 /* avoid NULL host */
1461 if( host == NULL ) {
1465 (void) ldap_pvt_tls_init();
1468 * Fortunately, the lib uses blocking io...
1470 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1471 ld->ld_errno = LDAP_CONNECT_ERROR;
1472 return (ld->ld_errno);
1475 ssl = ldap_pvt_tls_sb_ctx( sb );
1476 assert( ssl != NULL );
1479 * compare host with name(s) in certificate
1481 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
1482 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1483 if (ld->ld_errno != LDAP_SUCCESS) {
1484 return ld->ld_errno;
1488 return LDAP_SUCCESS;
1491 /* Derived from openssl/apps/s_cb.c */
1493 tls_info_cb( const SSL *ssl, int where, int ret )
1497 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1499 w = where & ~SSL_ST_MASK;
1500 if ( w & SSL_ST_CONNECT ) {
1502 } else if ( w & SSL_ST_ACCEPT ) {
1510 state = LDAP_STRDUP( state );
1514 if ( where & SSL_CB_LOOP ) {
1515 Debug( LDAP_DEBUG_TRACE,
1516 "TLS trace: %s:%s\n",
1519 } else if ( where & SSL_CB_ALERT ) {
1520 char *atype = (char *) SSL_alert_type_string_long( ret );
1521 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1522 op = ( where & SSL_CB_READ ) ? "read" : "write";
1525 atype = LDAP_STRDUP( atype );
1529 adesc = LDAP_STRDUP( adesc );
1533 Debug( LDAP_DEBUG_TRACE,
1534 "TLS trace: SSL3 alert %s:%s:%s\n",
1537 if ( atype ) LDAP_FREE( atype );
1538 if ( adesc ) LDAP_FREE( adesc );
1540 } else if ( where & SSL_CB_EXIT ) {
1542 Debug( LDAP_DEBUG_TRACE,
1543 "TLS trace: %s:failed in %s\n",
1545 } else if ( ret < 0 ) {
1546 Debug( LDAP_DEBUG_TRACE,
1547 "TLS trace: %s:error in %s\n",
1552 if ( state ) LDAP_FREE( state );
1557 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1566 char *certerr = NULL;
1568 cert = X509_STORE_CTX_get_current_cert( ctx );
1569 errnum = X509_STORE_CTX_get_error( ctx );
1570 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1573 * X509_get_*_name return pointers to the internal copies of
1574 * those things requested. So do not free them.
1576 subject = X509_get_subject_name( cert );
1577 issuer = X509_get_issuer_name( cert );
1578 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1579 sname = X509_NAME_oneline( subject, NULL, 0 );
1580 iname = X509_NAME_oneline( issuer, NULL, 0 );
1581 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1583 if ( sname ) __etoa( sname );
1584 if ( iname ) __etoa( iname );
1586 certerr = LDAP_STRDUP( certerr );
1590 Debug( LDAP_DEBUG_TRACE,
1591 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1593 sname ? sname : "-unknown-" );
1594 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1596 Debug( LDAP_DEBUG_ANY,
1597 "TLS certificate verification: Error, %s\n",
1601 CRYPTO_free ( sname );
1603 CRYPTO_free ( iname );
1605 if ( certerr ) LDAP_FREE( certerr );
1611 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1613 (void) tls_verify_cb( ok, ctx );
1617 /* Inspired by ERR_print_errors in OpenSSL */
1619 tls_report_error( void )
1626 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1627 ERR_error_string_n( l, buf, sizeof( buf ) );
1630 file = LDAP_STRDUP( file );
1631 __etoa( (char *)file );
1635 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1638 if ( file ) LDAP_FREE( (void *)file );
1644 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1648 /* FIXME: Pregenerate the key on startup */
1649 /* FIXME: Who frees the key? */
1650 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1653 Debug( LDAP_DEBUG_ANY,
1654 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1655 key_length, is_export ? "export" : "domestic", 0 );
1662 tls_seed_PRNG( const char *randfile )
1664 #ifndef URANDOM_DEVICE
1665 /* no /dev/urandom (or equiv) */
1667 char buffer[MAXPATHLEN];
1669 if (randfile == NULL) {
1670 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1671 * If $HOME is not set or buffer too small to hold the pathname,
1672 * an error occurs. - From RAND_file_name() man page.
1673 * The fact is that when $HOME is NULL, .rnd is used.
1675 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1677 } else if (RAND_egd(randfile) > 0) {
1682 if (randfile == NULL) {
1683 Debug( LDAP_DEBUG_ANY,
1684 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1689 total = RAND_load_file(randfile, -1);
1691 if (RAND_status() == 0) {
1692 Debug( LDAP_DEBUG_ANY,
1693 "TLS: PRNG not been seeded with enough data\n",
1698 /* assume if there was enough bits to seed that it's okay
1699 * to write derived bits to the file
1701 RAND_write_file(randfile);
1715 /* From the OpenSSL 0.9.7 distro */
1716 static const char dhpem512[] =
1717 "-----BEGIN DH PARAMETERS-----\n\
1718 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1719 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1720 -----END DH PARAMETERS-----\n";
1722 static const char dhpem1024[] =
1723 "-----BEGIN DH PARAMETERS-----\n\
1724 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1725 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1726 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1727 -----END DH PARAMETERS-----\n";
1729 static const char dhpem2048[] =
1730 "-----BEGIN DH PARAMETERS-----\n\
1731 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1732 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1733 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1734 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1735 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1736 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1737 -----END DH PARAMETERS-----\n";
1739 static const char dhpem4096[] =
1740 "-----BEGIN DH PARAMETERS-----\n\
1741 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1742 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1743 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1744 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1745 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1746 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1747 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1748 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1749 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1750 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1751 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1752 -----END DH PARAMETERS-----\n";
1754 static const struct dhinfo dhpem[] = {
1755 { 512, dhpem512, sizeof(dhpem512) },
1756 { 1024, dhpem1024, sizeof(dhpem1024) },
1757 { 2048, dhpem2048, sizeof(dhpem2048) },
1758 { 4096, dhpem4096, sizeof(dhpem4096) },
1763 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1765 struct dhplist *p = NULL;
1770 /* Do we have params of this length already? */
1771 #ifdef LDAP_R_COMPILE
1772 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1774 for ( p = dhparams; p; p=p->next ) {
1775 if ( p->keylength == key_length ) {
1776 #ifdef LDAP_R_COMPILE
1777 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1783 /* No - check for hardcoded params */
1785 for (i=0; dhpem[i].keylength; i++) {
1786 if ( dhpem[i].keylength == key_length ) {
1787 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1793 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1797 /* Generating on the fly is expensive/slow... */
1799 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1802 p = LDAP_MALLOC( sizeof(struct dhplist) );
1804 p->keylength = key_length;
1811 #ifdef LDAP_R_COMPILE
1812 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1819 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1824 if (HAS_TLS( sb )) {
1825 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1834 ldap_pvt_tls_get_strength( void *s )
1839 c = SSL_get_current_cipher((SSL *)s);
1840 return SSL_CIPHER_get_bits(c, NULL);
1848 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1855 x = SSL_get_certificate((SSL *)s);
1857 if (!x) return LDAP_INVALID_CREDENTIALS;
1859 xn = X509_get_subject_name(x);
1860 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1863 return LDAP_NOT_SUPPORTED;
1868 ldap_start_tls( LDAP *ld,
1869 LDAPControl **serverctrls,
1870 LDAPControl **clientctrls,
1873 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1874 NULL, serverctrls, clientctrls, msgidp );
1878 ldap_install_tls( LDAP *ld )
1881 return LDAP_NOT_SUPPORTED;
1883 if ( ldap_tls_inplace( ld ) ) {
1884 return LDAP_LOCAL_ERROR;
1887 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1892 ldap_start_tls_s ( LDAP *ld,
1893 LDAPControl **serverctrls,
1894 LDAPControl **clientctrls )
1897 return LDAP_NOT_SUPPORTED;
1900 char *rspoid = NULL;
1901 struct berval *rspdata = NULL;
1903 /* XXYYZ: this initiates operation only on default connection! */
1905 if ( ldap_tls_inplace( ld ) ) {
1906 return LDAP_LOCAL_ERROR;
1909 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1910 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1912 if ( rspoid != NULL ) {
1916 if ( rspdata != NULL ) {
1917 ber_bvfree( rspdata );
1920 if ( rc == LDAP_SUCCESS ) {
1921 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );