1 /* tls.c - Handle tls/ssl using SSLeay or OpenSSL. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2007 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 CRYPTO_set_id_callback( ldap_pvt_thread_self );
107 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
108 * is an integral type that fits in an unsigned long
111 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
112 ldap_pvt_thread_mutex_init( &tls_connect_mutex );
114 #endif /* LDAP_R_COMPILE */
117 ldap_int_tls_destroy( struct ldapoptions *lo )
119 if ( lo->ldo_tls_ctx ) {
120 SSL_CTX_free( lo->ldo_tls_ctx );
121 lo->ldo_tls_ctx = NULL;
124 if ( lo->ldo_tls_certfile ) {
125 LDAP_FREE( lo->ldo_tls_certfile );
126 lo->ldo_tls_certfile = NULL;
128 if ( lo->ldo_tls_keyfile ) {
129 LDAP_FREE( lo->ldo_tls_keyfile );
130 lo->ldo_tls_keyfile = NULL;
132 if ( lo->ldo_tls_dhfile ) {
133 LDAP_FREE( lo->ldo_tls_dhfile );
134 lo->ldo_tls_dhfile = NULL;
136 if ( lo->ldo_tls_cacertfile ) {
137 LDAP_FREE( lo->ldo_tls_cacertfile );
138 lo->ldo_tls_cacertfile = NULL;
140 if ( lo->ldo_tls_cacertdir ) {
141 LDAP_FREE( lo->ldo_tls_cacertdir );
142 lo->ldo_tls_cacertdir = NULL;
144 if ( lo->ldo_tls_ciphersuite ) {
145 LDAP_FREE( lo->ldo_tls_ciphersuite );
146 lo->ldo_tls_ciphersuite = NULL;
151 * Tear down the TLS subsystem. Should only be called once.
154 ldap_pvt_tls_destroy( void )
156 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
158 ldap_int_tls_destroy( lo );
164 if ( tls_opt_randfile ) {
165 LDAP_FREE( tls_opt_randfile );
166 tls_opt_randfile = NULL;
171 * Initialize TLS subsystem. Should be called only once.
174 ldap_pvt_tls_init( void )
176 static int tls_initialized = 0;
178 if ( tls_initialized++ ) return 0;
182 char *file = LDAP_STRDUP( tls_opt_randfile );
183 if ( file ) __atoe( file );
184 (void) tls_seed_PRNG( file );
188 (void) tls_seed_PRNG( tls_opt_randfile );
191 #ifdef LDAP_R_COMPILE
195 SSL_load_error_strings();
196 SSLeay_add_ssl_algorithms();
198 /* FIXME: mod_ssl does this */
199 X509V3_add_standard_extensions();
204 * initialize a new TLS context
207 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
209 STACK_OF(X509_NAME) *calist;
211 char *ciphersuite = lo->ldo_tls_ciphersuite;
212 char *cacertfile = lo->ldo_tls_cacertfile;
213 char *cacertdir = lo->ldo_tls_cacertdir;
214 char *certfile = lo->ldo_tls_certfile;
215 char *keyfile = lo->ldo_tls_keyfile;
216 char *dhfile = lo->ldo_tls_dhfile;
218 if ( lo->ldo_tls_ctx )
223 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
224 /* minimum configuration not provided */
225 return LDAP_NOT_SUPPORTED;
229 /* This ASCII/EBCDIC handling is a real pain! */
231 ciphersuite = LDAP_STRDUP( ciphersuite );
232 __atoe( ciphersuite );
235 cacertfile = LDAP_STRDUP( cacertfile );
236 __atoe( cacertfile );
239 cacertdir = LDAP_STRDUP( cacertdir );
243 certfile = LDAP_STRDUP( certfile );
247 keyfile = LDAP_STRDUP( keyfile );
251 dhfile = LDAP_STRDUP( dhfile );
255 lo->ldo_tls_ctx = SSL_CTX_new( SSLv23_method() );
256 if ( lo->ldo_tls_ctx == NULL ) {
257 Debug( LDAP_DEBUG_ANY,
258 "TLS: could not allocate default ctx (%lu).\n",
259 ERR_peek_error(),0,0);
265 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
266 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
269 if ( lo->ldo_tls_ciphersuite &&
270 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
272 Debug( LDAP_DEBUG_ANY,
273 "TLS: could not set cipher list %s.\n",
274 lo->ldo_tls_ciphersuite, 0, 0 );
280 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
281 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
282 cacertfile, cacertdir ) ||
283 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
285 Debug( LDAP_DEBUG_ANY, "TLS: "
286 "could not load verify locations (file:`%s',dir:`%s').\n",
287 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
288 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
296 /* List of CA names to send to a client */
297 calist = get_ca_list( cacertfile, cacertdir );
299 Debug( LDAP_DEBUG_ANY, "TLS: "
300 "could not load client CA list (file:`%s',dir:`%s').\n",
301 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
302 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
309 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
313 if ( lo->ldo_tls_certfile &&
314 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
315 certfile, SSL_FILETYPE_PEM ) )
317 Debug( LDAP_DEBUG_ANY,
318 "TLS: could not use certificate `%s'.\n",
319 lo->ldo_tls_certfile,0,0);
325 /* Key validity is checked automatically if cert has already been set */
326 if ( lo->ldo_tls_keyfile &&
327 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
328 keyfile, SSL_FILETYPE_PEM ) )
330 Debug( LDAP_DEBUG_ANY,
331 "TLS: could not use key file `%s'.\n",
332 lo->ldo_tls_keyfile,0,0);
338 if ( lo->ldo_tls_dhfile ) {
343 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
344 Debug( LDAP_DEBUG_ANY,
345 "TLS: could not use DH parameters file `%s'.\n",
346 lo->ldo_tls_dhfile,0,0);
351 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
352 p = LDAP_MALLOC( sizeof(dhplist) );
354 p->keylength = DH_size( dh ) * 8;
363 if ( tls_opt_trace ) {
364 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
368 if ( lo->ldo_tls_require_cert ) {
370 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
371 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
372 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
376 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
377 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
378 tls_verify_ok : tls_verify_cb );
379 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
380 if ( lo->ldo_tls_dhfile ) {
381 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
383 #ifdef HAVE_OPENSSL_CRL
384 if ( lo->ldo_tls_crlcheck ) {
385 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
386 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
387 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
388 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
389 X509_STORE_set_flags( x509_s,
390 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
396 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
397 SSL_CTX_free( lo->ldo_tls_ctx );
398 lo->ldo_tls_ctx = NULL;
401 LDAP_FREE( ciphersuite );
402 LDAP_FREE( cacertfile );
403 LDAP_FREE( cacertdir );
404 LDAP_FREE( certfile );
405 LDAP_FREE( keyfile );
412 * initialize the default context
415 ldap_pvt_tls_init_def_ctx( int is_server )
417 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
419 #ifdef LDAP_R_COMPILE
420 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
422 rc = ldap_int_tls_init_ctx( lo, is_server );
423 #ifdef LDAP_R_COMPILE
424 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
429 static STACK_OF(X509_NAME) *
430 get_ca_list( char * bundle, char * dir )
432 STACK_OF(X509_NAME) *ca_list = NULL;
435 ca_list = SSL_load_client_CA_file( bundle );
437 #if defined(HAVE_DIRENT_H) || defined(dirent)
442 ca_list = sk_X509_NAME_new_null();
445 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
447 sk_X509_NAME_free( ca_list );
456 alloc_handle( void *ctx_arg, int is_server )
462 ctx = (SSL_CTX *) ctx_arg;
464 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
465 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
466 ctx = lo->ldo_tls_ctx;
469 ssl = SSL_new( ctx );
471 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
478 update_flags( Sockbuf *sb, SSL * ssl, int rc )
480 int err = SSL_get_error(ssl, rc);
482 sb->sb_trans_needs_read = 0;
483 sb->sb_trans_needs_write = 0;
485 if (err == SSL_ERROR_WANT_READ) {
486 sb->sb_trans_needs_read = 1;
489 } else if (err == SSL_ERROR_WANT_WRITE) {
490 sb->sb_trans_needs_write = 1;
493 } else if (err == SSL_ERROR_WANT_CONNECT) {
500 * TLS support for LBER Sockbufs
505 Sockbuf_IO_Desc *sbiod;
508 static BIO_METHOD sb_tls_bio_method;
511 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
516 assert( sbiod != NULL );
518 p = LBER_MALLOC( sizeof( *p ) );
525 bio = BIO_new( &sb_tls_bio_method );
526 bio->ptr = (void *)p;
527 SSL_set_bio( p->ssl, bio, bio );
528 sbiod->sbiod_pvt = p;
533 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
537 assert( sbiod != NULL );
538 assert( sbiod->sbiod_pvt != NULL );
540 p = (struct tls_data *)sbiod->sbiod_pvt;
542 LBER_FREE( sbiod->sbiod_pvt );
543 sbiod->sbiod_pvt = NULL;
548 sb_tls_close( Sockbuf_IO_Desc *sbiod )
552 assert( sbiod != NULL );
553 assert( sbiod->sbiod_pvt != NULL );
555 p = (struct tls_data *)sbiod->sbiod_pvt;
556 SSL_shutdown( p->ssl );
561 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
565 assert( sbiod != NULL );
566 assert( sbiod->sbiod_pvt != NULL );
568 p = (struct tls_data *)sbiod->sbiod_pvt;
570 if ( opt == LBER_SB_OPT_GET_SSL ) {
571 *((SSL **)arg) = p->ssl;
574 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
575 if( SSL_pending( p->ssl ) > 0 ) {
580 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
584 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
590 assert( sbiod != NULL );
591 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
593 p = (struct tls_data *)sbiod->sbiod_pvt;
595 ret = SSL_read( p->ssl, (char *)buf, len );
597 errno = WSAGetLastError();
599 err = SSL_get_error( p->ssl, ret );
600 if (err == SSL_ERROR_WANT_READ ) {
601 sbiod->sbiod_sb->sb_trans_needs_read = 1;
602 sock_errset(EWOULDBLOCK);
605 sbiod->sbiod_sb->sb_trans_needs_read = 0;
610 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
616 assert( sbiod != NULL );
617 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
619 p = (struct tls_data *)sbiod->sbiod_pvt;
621 ret = SSL_write( p->ssl, (char *)buf, len );
623 errno = WSAGetLastError();
625 err = SSL_get_error( p->ssl, ret );
626 if (err == SSL_ERROR_WANT_WRITE ) {
627 sbiod->sbiod_sb->sb_trans_needs_write = 1;
628 sock_errset(EWOULDBLOCK);
631 sbiod->sbiod_sb->sb_trans_needs_write = 0;
636 static Sockbuf_IO sb_tls_sbio =
638 sb_tls_setup, /* sbi_setup */
639 sb_tls_remove, /* sbi_remove */
640 sb_tls_ctrl, /* sbi_ctrl */
641 sb_tls_read, /* sbi_read */
642 sb_tls_write, /* sbi_write */
643 sb_tls_close /* sbi_close */
647 sb_tls_bio_create( BIO *b ) {
656 sb_tls_bio_destroy( BIO *b )
658 if ( b == NULL ) return 0;
660 b->ptr = NULL; /* sb_tls_remove() will free it */
667 sb_tls_bio_read( BIO *b, char *buf, int len )
672 if ( buf == NULL || len <= 0 ) return 0;
674 p = (struct tls_data *)b->ptr;
676 if ( p == NULL || p->sbiod == NULL ) {
680 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
682 BIO_clear_retry_flags( b );
684 int err = sock_errno();
685 if ( err == EAGAIN || err == EWOULDBLOCK ) {
686 BIO_set_retry_read( b );
694 sb_tls_bio_write( BIO *b, const char *buf, int len )
699 if ( buf == NULL || len <= 0 ) return 0;
701 p = (struct tls_data *)b->ptr;
703 if ( p == NULL || p->sbiod == NULL ) {
707 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
709 BIO_clear_retry_flags( b );
711 int err = sock_errno();
712 if ( err == EAGAIN || err == EWOULDBLOCK ) {
713 BIO_set_retry_write( b );
721 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
723 if ( cmd == BIO_CTRL_FLUSH ) {
724 /* The OpenSSL library needs this */
731 sb_tls_bio_gets( BIO *b, char *buf, int len )
737 sb_tls_bio_puts( BIO *b, const char *str )
739 return sb_tls_bio_write( b, str, strlen( str ) );
742 static BIO_METHOD sb_tls_bio_method =
744 ( 100 | 0x400 ), /* it's a source/sink BIO */
756 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
757 * a SSL_CTX * or NULL, in which case the default ctx is used.
761 * 0 - Success. Connection is ready for communication.
762 * <0 - Error. Can't create a TLS stream.
763 * >0 - Partial success.
764 * Do a select (using information from lber_pvt_sb_needs_{read,write}
769 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
771 Sockbuf *sb = conn->lconn_sb;
775 if ( HAS_TLS( sb ) ) {
776 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
779 struct ldapoptions *lo;
782 ctx = ld->ld_options.ldo_tls_ctx;
784 ssl = alloc_handle( ctx, 0 );
786 if ( ssl == NULL ) return -1;
789 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
790 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
792 ber_sockbuf_add_io( sb, &sb_tls_sbio,
793 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
795 lo = LDAP_INT_GLOBAL_OPT();
797 ctx = lo->ldo_tls_ctx;
798 ld->ld_options.ldo_tls_ctx = ctx;
799 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
801 if ( ld->ld_options.ldo_tls_connect_cb )
802 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
803 ld->ld_options.ldo_tls_connect_arg );
804 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
805 ld->ld_options.ldo_tls_connect_cb )
806 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
809 err = SSL_connect( ssl );
812 errno = WSAGetLastError();
816 if ( update_flags( sb, ssl, err )) {
820 if ((err = ERR_peek_error())) {
823 if ( ld->ld_error ) {
824 LDAP_FREE( ld->ld_error );
826 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
828 if ( ld->ld_error ) __etoa(ld->ld_error);
832 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
833 ld->ld_error ? ld->ld_error : "" ,0,0);
835 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
836 LBER_SBIOD_LEVEL_TRANSPORT );
838 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
839 LBER_SBIOD_LEVEL_TRANSPORT );
848 * Call this to do a TLS accept on a sockbuf.
849 * Everything else is the same as with tls_connect.
852 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
857 if ( HAS_TLS( sb ) ) {
858 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
861 ssl = alloc_handle( ctx_arg, 1 );
862 if ( ssl == NULL ) return -1;
865 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
866 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
868 ber_sockbuf_add_io( sb, &sb_tls_sbio,
869 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
872 #ifdef LDAP_R_COMPILE
873 ldap_pvt_thread_mutex_lock( &tls_connect_mutex );
875 err = SSL_accept( ssl );
876 #ifdef LDAP_R_COMPILE
877 ldap_pvt_thread_mutex_unlock( &tls_connect_mutex );
881 errno = WSAGetLastError();
884 if ( update_flags( sb, ssl, err )) return 1;
886 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
889 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
890 LBER_SBIOD_LEVEL_TRANSPORT );
892 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
893 LBER_SBIOD_LEVEL_TRANSPORT );
902 ldap_pvt_tls_inplace ( Sockbuf *sb )
904 return HAS_TLS( sb ) ? 1 : 0;
908 ldap_tls_inplace( LDAP *ld )
912 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
913 sb = ld->ld_defconn->lconn_sb;
915 } else if ( ld->ld_sb ) {
922 return ldap_pvt_tls_inplace( sb );
926 tls_get_cert( SSL *s )
928 /* If peer cert was bad, treat as if no cert was given */
929 if (SSL_get_verify_result(s)) {
930 /* If we can send an alert, do so */
931 if (SSL_version(s) != SSL2_VERSION) {
932 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
936 return SSL_get_peer_certificate(s);
940 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
941 LDAPDN_rewrite_dummy *func, unsigned flags )
947 x = tls_get_cert((SSL *)s);
949 if (!x) return LDAP_INVALID_CREDENTIALS;
951 xn = X509_get_subject_name(x);
952 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
958 ldap_pvt_tls_get_peer_hostname( void *s )
965 x = tls_get_cert((SSL *)s);
968 xn = X509_get_subject_name(x);
970 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
976 p = LDAP_STRDUP(buf);
981 /* what kind of hostname were we given? */
987 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
989 int i, ret = LDAP_LOCAL_ERROR;
995 struct in6_addr addr;
1000 if( ldap_int_hostname &&
1001 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1003 name = ldap_int_hostname;
1008 x = tls_get_cert((SSL *)s);
1010 Debug( LDAP_DEBUG_ANY,
1011 "TLS: unable to get peer certificate.\n",
1013 /* If this was a fatal condition, things would have
1014 * aborted long before now.
1016 return LDAP_SUCCESS;
1019 #ifdef LDAP_PF_INET6
1020 if (name[0] == '[' && strchr(name, ']')) {
1021 char *n2 = ldap_strdup(name+1);
1022 *strchr(n2, ']') = 2;
1023 if (inet_pton(AF_INET6, n2, &addr))
1028 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1029 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1032 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1035 STACK_OF(GENERAL_NAME) *alt;
1037 ex = X509_get_ext(x, i);
1038 alt = X509V3_EXT_d2i(ex);
1040 int n, len1 = 0, len2 = 0;
1041 char *domain = NULL;
1044 if (ntype == IS_DNS) {
1045 len1 = strlen(name);
1046 domain = strchr(name, '.');
1048 len2 = len1 - (domain-name);
1051 n = sk_GENERAL_NAME_num(alt);
1052 for (i=0; i<n; i++) {
1055 gn = sk_GENERAL_NAME_value(alt, i);
1056 if (gn->type == GEN_DNS) {
1057 if (ntype != IS_DNS) continue;
1059 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1060 sl = ASN1_STRING_length(gn->d.ia5);
1063 if (sl == 0) continue;
1065 /* Is this an exact match? */
1066 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1070 /* Is this a wildcard match? */
1071 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1072 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1077 } else if (gn->type == GEN_IPADD) {
1078 if (ntype == IS_DNS) continue;
1080 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1081 sl = ASN1_STRING_length(gn->d.ia5);
1083 #ifdef LDAP_PF_INET6
1084 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1088 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1091 if (!memcmp(sn, &addr, sl)) {
1097 GENERAL_NAMES_free(alt);
1098 if (i < n) { /* Found a match */
1104 if (ret != LDAP_SUCCESS) {
1109 xn = X509_get_subject_name(x);
1110 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1111 buf, sizeof(buf)) == -1)
1113 Debug( LDAP_DEBUG_ANY,
1114 "TLS: unable to get common name from peer certificate.\n",
1116 ret = LDAP_CONNECT_ERROR;
1117 if ( ld->ld_error ) {
1118 LDAP_FREE( ld->ld_error );
1120 ld->ld_error = LDAP_STRDUP(
1121 _("TLS: unable to get CN from peer certificate"));
1123 } else if (strcasecmp(name, buf) == 0 ) {
1126 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1127 char *domain = strchr(name, '.');
1133 dlen = sl - (domain-name);
1136 /* Is this a wildcard match? */
1137 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1143 if( ret == LDAP_LOCAL_ERROR ) {
1144 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1145 "common name in certificate (%s).\n",
1147 ret = LDAP_CONNECT_ERROR;
1148 if ( ld->ld_error ) {
1149 LDAP_FREE( ld->ld_error );
1151 ld->ld_error = LDAP_STRDUP(
1152 _("TLS: hostname does not match CN in peer certificate"));
1160 ldap_pvt_tls_get_peer_issuer( void *s )
1162 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1167 x = SSL_get_peer_certificate((SSL *)s);
1169 if (!x) return NULL;
1171 xn = X509_get_issuer_name(x);
1172 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1181 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1186 case LDAP_OPT_X_TLS_CACERTFILE:
1187 case LDAP_OPT_X_TLS_CACERTDIR:
1188 case LDAP_OPT_X_TLS_CERTFILE:
1189 case LDAP_OPT_X_TLS_KEYFILE:
1190 case LDAP_OPT_X_TLS_RANDOM_FILE:
1191 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1192 case LDAP_OPT_X_TLS_DHFILE:
1193 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1195 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1196 case LDAP_OPT_X_TLS:
1198 if ( strcasecmp( arg, "never" ) == 0 ) {
1199 i = LDAP_OPT_X_TLS_NEVER ;
1201 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1202 i = LDAP_OPT_X_TLS_DEMAND ;
1204 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1205 i = LDAP_OPT_X_TLS_ALLOW ;
1207 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1208 i = LDAP_OPT_X_TLS_TRY ;
1210 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1211 ( strcasecmp( arg, "on" ) == 0 ) ||
1212 ( strcasecmp( arg, "yes" ) == 0) ||
1213 ( strcasecmp( arg, "true" ) == 0 ) )
1215 i = LDAP_OPT_X_TLS_HARD ;
1219 return ldap_pvt_tls_set_option( ld, option, &i );
1222 #ifdef HAVE_OPENSSL_CRL
1223 case LDAP_OPT_X_TLS_CRLCHECK:
1225 if ( strcasecmp( arg, "none" ) == 0 ) {
1226 i = LDAP_OPT_X_TLS_CRL_NONE ;
1227 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1228 i = LDAP_OPT_X_TLS_CRL_PEER ;
1229 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1230 i = LDAP_OPT_X_TLS_CRL_ALL ;
1233 return ldap_pvt_tls_set_option( ld, option, &i );
1242 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1244 struct ldapoptions *lo;
1247 assert( LDAP_VALID( ld ) );
1249 if( !LDAP_VALID( ld ) ) {
1250 return LDAP_OPT_ERROR;
1253 lo = &ld->ld_options;
1256 /* Get pointer to global option structure */
1257 lo = LDAP_INT_GLOBAL_OPT();
1259 return LDAP_NO_MEMORY;
1264 case LDAP_OPT_X_TLS:
1265 *(int *)arg = lo->ldo_tls_mode;
1267 case LDAP_OPT_X_TLS_CTX:
1268 *(void **)arg = lo->ldo_tls_ctx;
1269 if ( lo->ldo_tls_ctx ) {
1270 SSL_CTX *ctx = lo->ldo_tls_ctx;
1271 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
1274 case LDAP_OPT_X_TLS_CACERTFILE:
1275 *(char **)arg = lo->ldo_tls_cacertfile ?
1276 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
1278 case LDAP_OPT_X_TLS_CACERTDIR:
1279 *(char **)arg = lo->ldo_tls_cacertdir ?
1280 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
1282 case LDAP_OPT_X_TLS_CERTFILE:
1283 *(char **)arg = lo->ldo_tls_certfile ?
1284 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
1286 case LDAP_OPT_X_TLS_KEYFILE:
1287 *(char **)arg = lo->ldo_tls_keyfile ?
1288 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
1290 case LDAP_OPT_X_TLS_DHFILE:
1291 *(char **)arg = lo->ldo_tls_dhfile ?
1292 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
1294 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1295 *(int *)arg = lo->ldo_tls_require_cert;
1297 #ifdef HAVE_OPENSSL_CRL
1298 case LDAP_OPT_X_TLS_CRLCHECK:
1299 *(int *)arg = lo->ldo_tls_crlcheck;
1302 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1303 *(char **)arg = lo->ldo_tls_ciphersuite ?
1304 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
1306 case LDAP_OPT_X_TLS_RANDOM_FILE:
1307 *(char **)arg = tls_opt_randfile ?
1308 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1310 case LDAP_OPT_X_TLS_SSL_CTX: {
1313 LDAPConn *conn = ld->ld_defconn;
1314 if ( conn != NULL ) {
1315 Sockbuf *sb = conn->lconn_sb;
1316 retval = ldap_pvt_tls_sb_ctx( sb );
1319 *(void **)arg = retval;
1322 case LDAP_OPT_X_TLS_CONNECT_CB:
1323 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1325 case LDAP_OPT_X_TLS_CONNECT_ARG:
1326 *(void **)arg = lo->ldo_tls_connect_arg;
1335 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1337 struct ldapoptions *lo;
1340 assert( LDAP_VALID( ld ) );
1342 if( !LDAP_VALID( ld ) ) {
1343 return LDAP_OPT_ERROR;
1346 lo = &ld->ld_options;
1349 /* Get pointer to global option structure */
1350 lo = LDAP_INT_GLOBAL_OPT();
1352 return LDAP_NO_MEMORY;
1357 case LDAP_OPT_X_TLS:
1358 if ( !arg ) return -1;
1360 switch( *(int *) arg ) {
1361 case LDAP_OPT_X_TLS_NEVER:
1362 case LDAP_OPT_X_TLS_DEMAND:
1363 case LDAP_OPT_X_TLS_ALLOW:
1364 case LDAP_OPT_X_TLS_TRY:
1365 case LDAP_OPT_X_TLS_HARD:
1367 lo->ldo_tls_mode = *(int *)arg;
1374 case LDAP_OPT_X_TLS_CTX:
1375 if ( lo->ldo_tls_ctx )
1376 SSL_CTX_free( lo->ldo_tls_ctx );
1377 lo->ldo_tls_ctx = arg;
1378 CRYPTO_add( &((SSL_CTX *)arg)->references, 1, CRYPTO_LOCK_SSL_CTX );
1380 case LDAP_OPT_X_TLS_CONNECT_CB:
1381 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1383 case LDAP_OPT_X_TLS_CONNECT_ARG:
1384 lo->ldo_tls_connect_arg = arg;
1386 case LDAP_OPT_X_TLS_CACERTFILE:
1387 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
1388 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1390 case LDAP_OPT_X_TLS_CACERTDIR:
1391 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
1392 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1394 case LDAP_OPT_X_TLS_CERTFILE:
1395 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
1396 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1398 case LDAP_OPT_X_TLS_KEYFILE:
1399 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
1400 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1402 case LDAP_OPT_X_TLS_DHFILE:
1403 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
1404 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1406 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1407 if ( !arg ) return -1;
1408 switch( *(int *) arg ) {
1409 case LDAP_OPT_X_TLS_NEVER:
1410 case LDAP_OPT_X_TLS_DEMAND:
1411 case LDAP_OPT_X_TLS_ALLOW:
1412 case LDAP_OPT_X_TLS_TRY:
1413 case LDAP_OPT_X_TLS_HARD:
1414 lo->ldo_tls_require_cert = * (int *) arg;
1418 #ifdef HAVE_OPENSSL_CRL
1419 case LDAP_OPT_X_TLS_CRLCHECK:
1420 if ( !arg ) return -1;
1421 switch( *(int *) arg ) {
1422 case LDAP_OPT_X_TLS_CRL_NONE:
1423 case LDAP_OPT_X_TLS_CRL_PEER:
1424 case LDAP_OPT_X_TLS_CRL_ALL:
1425 lo->ldo_tls_crlcheck = * (int *) arg;
1430 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1431 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
1432 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1435 case LDAP_OPT_X_TLS_RANDOM_FILE:
1438 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1439 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1442 case LDAP_OPT_X_TLS_NEWCTX:
1443 if ( !arg ) return -1;
1444 if ( lo->ldo_tls_ctx )
1445 SSL_CTX_free( lo->ldo_tls_ctx );
1446 lo->ldo_tls_ctx = NULL;
1447 return ldap_int_tls_init_ctx( lo, *(int *)arg );
1455 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1457 Sockbuf *sb = conn->lconn_sb;
1462 host = srv->lud_host;
1464 host = conn->lconn_server->lud_host;
1467 /* avoid NULL host */
1468 if( host == NULL ) {
1472 (void) ldap_pvt_tls_init();
1475 * Fortunately, the lib uses blocking io...
1477 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1478 ld->ld_errno = LDAP_CONNECT_ERROR;
1479 return (ld->ld_errno);
1482 ssl = ldap_pvt_tls_sb_ctx( sb );
1483 assert( ssl != NULL );
1486 * compare host with name(s) in certificate
1488 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
1489 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1490 if (ld->ld_errno != LDAP_SUCCESS) {
1491 return ld->ld_errno;
1495 return LDAP_SUCCESS;
1498 /* Derived from openssl/apps/s_cb.c */
1500 tls_info_cb( const SSL *ssl, int where, int ret )
1504 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1506 w = where & ~SSL_ST_MASK;
1507 if ( w & SSL_ST_CONNECT ) {
1509 } else if ( w & SSL_ST_ACCEPT ) {
1517 state = LDAP_STRDUP( state );
1521 if ( where & SSL_CB_LOOP ) {
1522 Debug( LDAP_DEBUG_TRACE,
1523 "TLS trace: %s:%s\n",
1526 } else if ( where & SSL_CB_ALERT ) {
1527 char *atype = (char *) SSL_alert_type_string_long( ret );
1528 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1529 op = ( where & SSL_CB_READ ) ? "read" : "write";
1532 atype = LDAP_STRDUP( atype );
1536 adesc = LDAP_STRDUP( adesc );
1540 Debug( LDAP_DEBUG_TRACE,
1541 "TLS trace: SSL3 alert %s:%s:%s\n",
1544 if ( atype ) LDAP_FREE( atype );
1545 if ( adesc ) LDAP_FREE( adesc );
1547 } else if ( where & SSL_CB_EXIT ) {
1549 Debug( LDAP_DEBUG_TRACE,
1550 "TLS trace: %s:failed in %s\n",
1552 } else if ( ret < 0 ) {
1553 Debug( LDAP_DEBUG_TRACE,
1554 "TLS trace: %s:error in %s\n",
1559 if ( state ) LDAP_FREE( state );
1564 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1573 char *certerr = NULL;
1575 cert = X509_STORE_CTX_get_current_cert( ctx );
1576 errnum = X509_STORE_CTX_get_error( ctx );
1577 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1580 * X509_get_*_name return pointers to the internal copies of
1581 * those things requested. So do not free them.
1583 subject = X509_get_subject_name( cert );
1584 issuer = X509_get_issuer_name( cert );
1585 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1586 sname = X509_NAME_oneline( subject, NULL, 0 );
1587 iname = X509_NAME_oneline( issuer, NULL, 0 );
1588 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1590 if ( sname ) __etoa( sname );
1591 if ( iname ) __etoa( iname );
1593 certerr = LDAP_STRDUP( certerr );
1597 Debug( LDAP_DEBUG_TRACE,
1598 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1600 sname ? sname : "-unknown-" );
1601 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1603 Debug( LDAP_DEBUG_ANY,
1604 "TLS certificate verification: Error, %s\n",
1608 CRYPTO_free ( sname );
1610 CRYPTO_free ( iname );
1612 if ( certerr ) LDAP_FREE( certerr );
1618 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1620 (void) tls_verify_cb( ok, ctx );
1624 /* Inspired by ERR_print_errors in OpenSSL */
1626 tls_report_error( void )
1633 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1634 ERR_error_string_n( l, buf, sizeof( buf ) );
1637 file = LDAP_STRDUP( file );
1638 __etoa( (char *)file );
1642 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1645 if ( file ) LDAP_FREE( (void *)file );
1651 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1655 /* FIXME: Pregenerate the key on startup */
1656 /* FIXME: Who frees the key? */
1657 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1660 Debug( LDAP_DEBUG_ANY,
1661 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1662 key_length, is_export ? "export" : "domestic", 0 );
1669 tls_seed_PRNG( const char *randfile )
1671 #ifndef URANDOM_DEVICE
1672 /* no /dev/urandom (or equiv) */
1674 char buffer[MAXPATHLEN];
1676 if (randfile == NULL) {
1677 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1678 * If $HOME is not set or buffer too small to hold the pathname,
1679 * an error occurs. - From RAND_file_name() man page.
1680 * The fact is that when $HOME is NULL, .rnd is used.
1682 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1684 } else if (RAND_egd(randfile) > 0) {
1689 if (randfile == NULL) {
1690 Debug( LDAP_DEBUG_ANY,
1691 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1696 total = RAND_load_file(randfile, -1);
1698 if (RAND_status() == 0) {
1699 Debug( LDAP_DEBUG_ANY,
1700 "TLS: PRNG not been seeded with enough data\n",
1705 /* assume if there was enough bits to seed that it's okay
1706 * to write derived bits to the file
1708 RAND_write_file(randfile);
1722 /* From the OpenSSL 0.9.7 distro */
1723 static const char dhpem512[] =
1724 "-----BEGIN DH PARAMETERS-----\n\
1725 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1726 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1727 -----END DH PARAMETERS-----\n";
1729 static const char dhpem1024[] =
1730 "-----BEGIN DH PARAMETERS-----\n\
1731 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1732 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1733 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1734 -----END DH PARAMETERS-----\n";
1736 static const char dhpem2048[] =
1737 "-----BEGIN DH PARAMETERS-----\n\
1738 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1739 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1740 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1741 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1742 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1743 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1744 -----END DH PARAMETERS-----\n";
1746 static const char dhpem4096[] =
1747 "-----BEGIN DH PARAMETERS-----\n\
1748 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1749 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1750 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1751 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1752 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1753 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1754 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1755 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1756 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1757 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1758 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1759 -----END DH PARAMETERS-----\n";
1761 static const struct dhinfo dhpem[] = {
1762 { 512, dhpem512, sizeof(dhpem512) },
1763 { 1024, dhpem1024, sizeof(dhpem1024) },
1764 { 2048, dhpem2048, sizeof(dhpem2048) },
1765 { 4096, dhpem4096, sizeof(dhpem4096) },
1770 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1772 struct dhplist *p = NULL;
1777 /* Do we have params of this length already? */
1778 #ifdef LDAP_R_COMPILE
1779 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1781 for ( p = dhparams; p; p=p->next ) {
1782 if ( p->keylength == key_length ) {
1783 #ifdef LDAP_R_COMPILE
1784 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1790 /* No - check for hardcoded params */
1792 for (i=0; dhpem[i].keylength; i++) {
1793 if ( dhpem[i].keylength == key_length ) {
1794 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1800 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1804 /* Generating on the fly is expensive/slow... */
1806 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1809 p = LDAP_MALLOC( sizeof(struct dhplist) );
1811 p->keylength = key_length;
1818 #ifdef LDAP_R_COMPILE
1819 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1826 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1831 if (HAS_TLS( sb )) {
1832 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1841 ldap_pvt_tls_get_strength( void *s )
1846 c = SSL_get_current_cipher((SSL *)s);
1847 return SSL_CIPHER_get_bits(c, NULL);
1855 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1862 x = SSL_get_certificate((SSL *)s);
1864 if (!x) return LDAP_INVALID_CREDENTIALS;
1866 xn = X509_get_subject_name(x);
1867 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1870 return LDAP_NOT_SUPPORTED;
1875 ldap_start_tls( LDAP *ld,
1876 LDAPControl **serverctrls,
1877 LDAPControl **clientctrls,
1880 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1881 NULL, serverctrls, clientctrls, msgidp );
1885 ldap_install_tls( LDAP *ld )
1888 return LDAP_NOT_SUPPORTED;
1890 if ( ldap_tls_inplace( ld ) ) {
1891 return LDAP_LOCAL_ERROR;
1894 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1899 ldap_start_tls_s ( LDAP *ld,
1900 LDAPControl **serverctrls,
1901 LDAPControl **clientctrls )
1904 return LDAP_NOT_SUPPORTED;
1907 char *rspoid = NULL;
1908 struct berval *rspdata = NULL;
1910 /* XXYYZ: this initiates operation only on default connection! */
1912 if ( ldap_tls_inplace( ld ) ) {
1913 return LDAP_LOCAL_ERROR;
1916 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1917 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1919 if ( rspoid != NULL ) {
1923 if ( rspdata != NULL ) {
1924 ber_bvfree( rspdata );
1927 if ( rc == LDAP_SUCCESS ) {
1928 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );