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;
97 static void tls_init_threads( void )
101 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
102 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
104 CRYPTO_set_locking_callback( tls_locking_cb );
105 /* FIXME: the thread id should be added somehow... */
107 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
109 #endif /* LDAP_R_COMPILE */
112 ldap_int_tls_destroy( struct ldapoptions *lo )
114 SSL_CTX_free( lo->ldo_tls_ctx );
115 lo->ldo_tls_ctx = NULL;
117 if ( lo->ldo_tls_certfile ) {
118 LDAP_FREE( lo->ldo_tls_certfile );
119 lo->ldo_tls_certfile = NULL;
121 if ( lo->ldo_tls_keyfile ) {
122 LDAP_FREE( lo->ldo_tls_keyfile );
123 lo->ldo_tls_keyfile = NULL;
125 if ( lo->ldo_tls_dhfile ) {
126 LDAP_FREE( lo->ldo_tls_dhfile );
127 lo->ldo_tls_dhfile = NULL;
129 if ( lo->ldo_tls_cacertfile ) {
130 LDAP_FREE( lo->ldo_tls_cacertfile );
131 lo->ldo_tls_cacertfile = NULL;
133 if ( lo->ldo_tls_cacertdir ) {
134 LDAP_FREE( lo->ldo_tls_cacertdir );
135 lo->ldo_tls_cacertdir = NULL;
137 if ( lo->ldo_tls_ciphersuite ) {
138 LDAP_FREE( lo->ldo_tls_ciphersuite );
139 lo->ldo_tls_ciphersuite = NULL;
144 * Tear down the TLS subsystem. Should only be called once.
147 ldap_pvt_tls_destroy( void )
153 if ( tls_opt_randfile ) {
154 LDAP_FREE( tls_opt_randfile );
155 tls_opt_randfile = NULL;
160 * Initialize TLS subsystem. Should be called only once.
163 ldap_pvt_tls_init( void )
165 static int tls_initialized = 0;
167 if ( tls_initialized++ ) return 0;
171 char *file = LDAP_STRDUP( tls_opt_randfile );
172 if ( file ) __atoe( file );
173 (void) tls_seed_PRNG( file );
177 (void) tls_seed_PRNG( tls_opt_randfile );
180 #ifdef LDAP_R_COMPILE
184 SSL_load_error_strings();
185 SSLeay_add_ssl_algorithms();
187 /* FIXME: mod_ssl does this */
188 X509V3_add_standard_extensions();
193 * initialize a new TLS context
196 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
198 STACK_OF(X509_NAME) *calist;
200 char *ciphersuite = lo->ldo_tls_ciphersuite;
201 char *cacertfile = lo->ldo_tls_cacertfile;
202 char *cacertdir = lo->ldo_tls_cacertdir;
203 char *certfile = lo->ldo_tls_certfile;
204 char *keyfile = lo->ldo_tls_keyfile;
205 char *dhfile = lo->ldo_tls_dhfile;
207 if ( lo->ldo_tls_ctx )
210 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
211 /* minimum configuration not provided */
212 return LDAP_NOT_SUPPORTED;
216 /* This ASCII/EBCDIC handling is a real pain! */
218 ciphersuite = LDAP_STRDUP( ciphersuite );
219 __atoe( ciphersuite );
222 cacertfile = LDAP_STRDUP( cacertfile );
223 __atoe( cacertfile );
226 cacertdir = LDAP_STRDUP( cacertdir );
230 certfile = LDAP_STRDUP( certfile );
234 keyfile = LDAP_STRDUP( keyfile );
238 dhfile = LDAP_STRDUP( dhfile );
242 lo->ldo_tls_ctx = SSL_CTX_new( SSLv23_method() );
243 if ( lo->ldo_tls_ctx == NULL ) {
244 Debug( LDAP_DEBUG_ANY,
245 "TLS: could not allocate default ctx (%lu).\n",
246 ERR_peek_error(),0,0);
252 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
253 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
256 if ( lo->ldo_tls_ciphersuite &&
257 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
259 Debug( LDAP_DEBUG_ANY,
260 "TLS: could not set cipher list %s.\n",
261 lo->ldo_tls_ciphersuite, 0, 0 );
267 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
268 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
269 cacertfile, cacertdir ) ||
270 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
272 Debug( LDAP_DEBUG_ANY, "TLS: "
273 "could not load verify locations (file:`%s',dir:`%s').\n",
274 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
275 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
283 /* List of CA names to send to a client */
284 calist = get_ca_list( cacertfile, cacertdir );
286 Debug( LDAP_DEBUG_ANY, "TLS: "
287 "could not load client CA list (file:`%s',dir:`%s').\n",
288 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
289 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
296 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
300 if ( lo->ldo_tls_certfile &&
301 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
302 certfile, SSL_FILETYPE_PEM ) )
304 Debug( LDAP_DEBUG_ANY,
305 "TLS: could not use certificate `%s'.\n",
306 lo->ldo_tls_certfile,0,0);
312 /* Key validity is checked automatically if cert has already been set */
313 if ( lo->ldo_tls_keyfile &&
314 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
315 keyfile, SSL_FILETYPE_PEM ) )
317 Debug( LDAP_DEBUG_ANY,
318 "TLS: could not use key file `%s'.\n",
319 lo->ldo_tls_keyfile,0,0);
325 if ( lo->ldo_tls_dhfile ) {
330 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
331 Debug( LDAP_DEBUG_ANY,
332 "TLS: could not use DH parameters file `%s'.\n",
333 lo->ldo_tls_dhfile,0,0);
338 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
339 p = LDAP_MALLOC( sizeof(dhplist) );
341 p->keylength = DH_size( dh ) * 8;
350 if ( tls_opt_trace ) {
351 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
355 if ( lo->ldo_tls_require_cert ) {
357 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
358 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
359 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
363 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
364 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
365 tls_verify_ok : tls_verify_cb );
366 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
367 if ( lo->ldo_tls_dhfile ) {
368 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
370 #ifdef HAVE_OPENSSL_CRL
371 if ( lo->ldo_tls_crlcheck ) {
372 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
373 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
374 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
375 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
376 X509_STORE_set_flags( x509_s,
377 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
383 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
384 SSL_CTX_free( lo->ldo_tls_ctx );
385 lo->ldo_tls_ctx = NULL;
388 LDAP_FREE( ciphersuite );
389 LDAP_FREE( cacertfile );
390 LDAP_FREE( cacertdir );
391 LDAP_FREE( certfile );
392 LDAP_FREE( keyfile );
399 * initialize the default context
402 ldap_pvt_tls_init_def_ctx( int is_server )
404 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
406 #ifdef LDAP_R_COMPILE
407 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
409 rc = ldap_int_tls_init_ctx( lo, is_server );
410 #ifdef LDAP_R_COMPILE
411 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
415 static STACK_OF(X509_NAME) *
416 get_ca_list( char * bundle, char * dir )
418 STACK_OF(X509_NAME) *ca_list = NULL;
421 ca_list = SSL_load_client_CA_file( bundle );
423 #if defined(HAVE_DIRENT_H) || defined(dirent)
428 ca_list = sk_X509_NAME_new_null();
431 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
433 sk_X509_NAME_free( ca_list );
442 alloc_handle( void *ctx_arg, int is_server )
448 ctx = (SSL_CTX *) ctx_arg;
450 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
451 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
452 ctx = lo->ldo_tls_ctx;
455 ssl = SSL_new( ctx );
457 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
464 update_flags( Sockbuf *sb, SSL * ssl, int rc )
466 int err = SSL_get_error(ssl, rc);
468 sb->sb_trans_needs_read = 0;
469 sb->sb_trans_needs_write = 0;
471 if (err == SSL_ERROR_WANT_READ) {
472 sb->sb_trans_needs_read = 1;
475 } else if (err == SSL_ERROR_WANT_WRITE) {
476 sb->sb_trans_needs_write = 1;
479 } else if (err == SSL_ERROR_WANT_CONNECT) {
486 * TLS support for LBER Sockbufs
491 Sockbuf_IO_Desc *sbiod;
494 static BIO_METHOD sb_tls_bio_method;
497 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
502 assert( sbiod != NULL );
504 p = LBER_MALLOC( sizeof( *p ) );
511 bio = BIO_new( &sb_tls_bio_method );
512 bio->ptr = (void *)p;
513 SSL_set_bio( p->ssl, bio, bio );
514 sbiod->sbiod_pvt = p;
519 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
523 assert( sbiod != NULL );
524 assert( sbiod->sbiod_pvt != NULL );
526 p = (struct tls_data *)sbiod->sbiod_pvt;
528 LBER_FREE( sbiod->sbiod_pvt );
529 sbiod->sbiod_pvt = NULL;
534 sb_tls_close( Sockbuf_IO_Desc *sbiod )
538 assert( sbiod != NULL );
539 assert( sbiod->sbiod_pvt != NULL );
541 p = (struct tls_data *)sbiod->sbiod_pvt;
542 SSL_shutdown( p->ssl );
547 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
551 assert( sbiod != NULL );
552 assert( sbiod->sbiod_pvt != NULL );
554 p = (struct tls_data *)sbiod->sbiod_pvt;
556 if ( opt == LBER_SB_OPT_GET_SSL ) {
557 *((SSL **)arg) = p->ssl;
560 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
561 if( SSL_pending( p->ssl ) > 0 ) {
566 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
570 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
576 assert( sbiod != NULL );
577 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
579 p = (struct tls_data *)sbiod->sbiod_pvt;
581 ret = SSL_read( p->ssl, (char *)buf, len );
583 errno = WSAGetLastError();
585 err = SSL_get_error( p->ssl, ret );
586 if (err == SSL_ERROR_WANT_READ ) {
587 sbiod->sbiod_sb->sb_trans_needs_read = 1;
591 sbiod->sbiod_sb->sb_trans_needs_read = 0;
596 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
602 assert( sbiod != NULL );
603 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
605 p = (struct tls_data *)sbiod->sbiod_pvt;
607 ret = SSL_write( p->ssl, (char *)buf, len );
609 errno = WSAGetLastError();
611 err = SSL_get_error( p->ssl, ret );
612 if (err == SSL_ERROR_WANT_WRITE ) {
613 sbiod->sbiod_sb->sb_trans_needs_write = 1;
617 sbiod->sbiod_sb->sb_trans_needs_write = 0;
622 static Sockbuf_IO sb_tls_sbio =
624 sb_tls_setup, /* sbi_setup */
625 sb_tls_remove, /* sbi_remove */
626 sb_tls_ctrl, /* sbi_ctrl */
627 sb_tls_read, /* sbi_read */
628 sb_tls_write, /* sbi_write */
629 sb_tls_close /* sbi_close */
633 sb_tls_bio_create( BIO *b ) {
642 sb_tls_bio_destroy( BIO *b )
644 if ( b == NULL ) return 0;
646 b->ptr = NULL; /* sb_tls_remove() will free it */
653 sb_tls_bio_read( BIO *b, char *buf, int len )
658 if ( buf == NULL || len <= 0 ) return 0;
660 p = (struct tls_data *)b->ptr;
662 if ( p == NULL || p->sbiod == NULL ) {
666 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
668 BIO_clear_retry_flags( b );
671 if ( err == EAGAIN || err == EWOULDBLOCK ) {
672 BIO_set_retry_read( b );
680 sb_tls_bio_write( BIO *b, const char *buf, int len )
685 if ( buf == NULL || len <= 0 ) return 0;
687 p = (struct tls_data *)b->ptr;
689 if ( p == NULL || p->sbiod == NULL ) {
693 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
695 BIO_clear_retry_flags( b );
698 if ( err == EAGAIN || err == EWOULDBLOCK ) {
699 BIO_set_retry_write( b );
707 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
709 if ( cmd == BIO_CTRL_FLUSH ) {
710 /* The OpenSSL library needs this */
717 sb_tls_bio_gets( BIO *b, char *buf, int len )
723 sb_tls_bio_puts( BIO *b, const char *str )
725 return sb_tls_bio_write( b, str, strlen( str ) );
728 static BIO_METHOD sb_tls_bio_method =
730 ( 100 | 0x400 ), /* it's a source/sink BIO */
742 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
743 * a SSL_CTX * or NULL, in which case the default ctx is used.
747 * 0 - Success. Connection is ready for communication.
748 * <0 - Error. Can't create a TLS stream.
749 * >0 - Partial success.
750 * Do a select (using information from lber_pvt_sb_needs_{read,write}
755 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
757 Sockbuf *sb = conn->lconn_sb;
761 if ( HAS_TLS( sb ) ) {
762 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
765 struct ldapoptions *lo;
768 ctx = ld->ld_options.ldo_tls_ctx;
770 ssl = alloc_handle( ctx, 0 );
772 if ( ssl == NULL ) return -1;
775 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
776 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
778 ber_sockbuf_add_io( sb, &sb_tls_sbio,
779 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
781 lo = LDAP_INT_GLOBAL_OPT();
783 ctx = lo->ldo_tls_ctx;
784 ld->ld_options.ldo_tls_ctx = ctx;
785 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
787 if ( ld->ld_options.ldo_tls_connect_cb )
788 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
789 ld->ld_options.ldo_tls_connect_arg );
790 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
791 ld->ld_options.ldo_tls_connect_cb )
792 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
795 err = SSL_connect( ssl );
798 errno = WSAGetLastError();
802 if ( update_flags( sb, ssl, err )) {
806 if ((err = ERR_peek_error())) {
809 if ( ld->ld_error ) {
810 LDAP_FREE( ld->ld_error );
812 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
814 if ( ld->ld_error ) __etoa(ld->ld_error);
818 Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
820 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
821 LBER_SBIOD_LEVEL_TRANSPORT );
823 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
824 LBER_SBIOD_LEVEL_TRANSPORT );
833 * Call this to do a TLS accept on a sockbuf.
834 * Everything else is the same as with tls_connect.
837 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
842 if ( HAS_TLS( sb ) ) {
843 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
846 ssl = alloc_handle( ctx_arg, 1 );
847 if ( ssl == NULL ) return -1;
850 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
851 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
853 ber_sockbuf_add_io( sb, &sb_tls_sbio,
854 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
857 err = SSL_accept( ssl );
860 errno = WSAGetLastError();
863 if ( update_flags( sb, ssl, err )) return 1;
865 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
868 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
869 LBER_SBIOD_LEVEL_TRANSPORT );
871 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
872 LBER_SBIOD_LEVEL_TRANSPORT );
881 ldap_pvt_tls_inplace ( Sockbuf *sb )
883 return HAS_TLS( sb ) ? 1 : 0;
887 ldap_tls_inplace( LDAP *ld )
891 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
892 sb = ld->ld_defconn->lconn_sb;
894 } else if ( ld->ld_sb ) {
901 return ldap_pvt_tls_inplace( sb );
905 tls_get_cert( SSL *s )
907 /* If peer cert was bad, treat as if no cert was given */
908 if (SSL_get_verify_result(s)) {
909 /* If we can send an alert, do so */
910 if (SSL_version(s) != SSL2_VERSION) {
911 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
915 return SSL_get_peer_certificate(s);
919 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
920 LDAPDN_rewrite_dummy *func, unsigned flags )
926 x = tls_get_cert((SSL *)s);
928 if (!x) return LDAP_INVALID_CREDENTIALS;
930 xn = X509_get_subject_name(x);
931 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
937 ldap_pvt_tls_get_peer_hostname( void *s )
944 x = tls_get_cert((SSL *)s);
947 xn = X509_get_subject_name(x);
949 ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
955 p = LDAP_STRDUP(buf);
960 /* what kind of hostname were we given? */
966 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
968 int i, ret = LDAP_LOCAL_ERROR;
974 struct in6_addr addr;
979 if( ldap_int_hostname &&
980 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
982 name = ldap_int_hostname;
987 x = tls_get_cert((SSL *)s);
989 Debug( LDAP_DEBUG_ANY,
990 "TLS: unable to get peer certificate.\n",
992 /* If this was a fatal condition, things would have
993 * aborted long before now.
999 if (name[0] == '[' && strchr(name, ']')) {
1000 char *n2 = ldap_strdup(name+1);
1001 *strchr(n2, ']') = 2;
1002 if (inet_pton(AF_INET6, n2, &addr))
1007 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1008 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1011 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1014 STACK_OF(GENERAL_NAME) *alt;
1016 ex = X509_get_ext(x, i);
1017 alt = X509V3_EXT_d2i(ex);
1019 int n, len1 = 0, len2 = 0;
1020 char *domain = NULL;
1023 if (ntype == IS_DNS) {
1024 len1 = strlen(name);
1025 domain = strchr(name, '.');
1027 len2 = len1 - (domain-name);
1030 n = sk_GENERAL_NAME_num(alt);
1031 for (i=0; i<n; i++) {
1034 gn = sk_GENERAL_NAME_value(alt, i);
1035 if (gn->type == GEN_DNS) {
1036 if (ntype != IS_DNS) continue;
1038 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1039 sl = ASN1_STRING_length(gn->d.ia5);
1042 if (sl == 0) continue;
1044 /* Is this an exact match? */
1045 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
1049 /* Is this a wildcard match? */
1050 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
1051 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
1056 } else if (gn->type == GEN_IPADD) {
1057 if (ntype == IS_DNS) continue;
1059 sn = (char *) ASN1_STRING_data(gn->d.ia5);
1060 sl = ASN1_STRING_length(gn->d.ia5);
1062 #ifdef LDAP_PF_INET6
1063 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
1067 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
1070 if (!memcmp(sn, &addr, sl)) {
1076 GENERAL_NAMES_free(alt);
1077 if (i < n) { /* Found a match */
1083 if (ret != LDAP_SUCCESS) {
1088 xn = X509_get_subject_name(x);
1089 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
1090 buf, sizeof(buf)) == -1)
1092 Debug( LDAP_DEBUG_ANY,
1093 "TLS: unable to get common name from peer certificate.\n",
1095 ret = LDAP_CONNECT_ERROR;
1096 if ( ld->ld_error ) {
1097 LDAP_FREE( ld->ld_error );
1099 ld->ld_error = LDAP_STRDUP(
1100 _("TLS: unable to get CN from peer certificate"));
1102 } else if (strcasecmp(name, buf) == 0 ) {
1105 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
1106 char *domain = strchr(name, '.');
1112 dlen = sl - (domain-name);
1115 /* Is this a wildcard match? */
1116 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
1122 if( ret == LDAP_LOCAL_ERROR ) {
1123 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1124 "common name in certificate (%s).\n",
1126 ret = LDAP_CONNECT_ERROR;
1127 if ( ld->ld_error ) {
1128 LDAP_FREE( ld->ld_error );
1130 ld->ld_error = LDAP_STRDUP(
1131 _("TLS: hostname does not match CN in peer certificate"));
1139 ldap_pvt_tls_get_peer_issuer( void *s )
1141 #if 0 /* currently unused; see ldap_pvt_tls_get_peer_dn() if needed */
1146 x = SSL_get_peer_certificate((SSL *)s);
1148 if (!x) return NULL;
1150 xn = X509_get_issuer_name(x);
1151 p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
1160 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
1165 case LDAP_OPT_X_TLS_CACERTFILE:
1166 case LDAP_OPT_X_TLS_CACERTDIR:
1167 case LDAP_OPT_X_TLS_CERTFILE:
1168 case LDAP_OPT_X_TLS_KEYFILE:
1169 case LDAP_OPT_X_TLS_RANDOM_FILE:
1170 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1171 case LDAP_OPT_X_TLS_DHFILE:
1172 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
1174 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1175 case LDAP_OPT_X_TLS:
1177 if ( strcasecmp( arg, "never" ) == 0 ) {
1178 i = LDAP_OPT_X_TLS_NEVER ;
1180 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
1181 i = LDAP_OPT_X_TLS_DEMAND ;
1183 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
1184 i = LDAP_OPT_X_TLS_ALLOW ;
1186 } else if ( strcasecmp( arg, "try" ) == 0 ) {
1187 i = LDAP_OPT_X_TLS_TRY ;
1189 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
1190 ( strcasecmp( arg, "on" ) == 0 ) ||
1191 ( strcasecmp( arg, "yes" ) == 0) ||
1192 ( strcasecmp( arg, "true" ) == 0 ) )
1194 i = LDAP_OPT_X_TLS_HARD ;
1198 return ldap_pvt_tls_set_option( ld, option, &i );
1201 #ifdef HAVE_OPENSSL_CRL
1202 case LDAP_OPT_X_TLS_CRLCHECK:
1204 if ( strcasecmp( arg, "none" ) == 0 ) {
1205 i = LDAP_OPT_X_TLS_CRL_NONE ;
1206 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
1207 i = LDAP_OPT_X_TLS_CRL_PEER ;
1208 } else if ( strcasecmp( arg, "all" ) == 0 ) {
1209 i = LDAP_OPT_X_TLS_CRL_ALL ;
1212 return ldap_pvt_tls_set_option( ld, option, &i );
1221 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
1223 struct ldapoptions *lo;
1226 assert( LDAP_VALID( ld ) );
1228 if( !LDAP_VALID( ld ) ) {
1229 return LDAP_OPT_ERROR;
1232 lo = &ld->ld_options;
1235 /* Get pointer to global option structure */
1236 lo = LDAP_INT_GLOBAL_OPT();
1238 return LDAP_NO_MEMORY;
1243 case LDAP_OPT_X_TLS:
1244 *(int *)arg = lo->ldo_tls_mode;
1246 case LDAP_OPT_X_TLS_CTX:
1247 *(void **)arg = lo->ldo_tls_ctx;
1249 case LDAP_OPT_X_TLS_CACERTFILE:
1250 *(char **)arg = lo->ldo_tls_cacertfile ?
1251 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
1253 case LDAP_OPT_X_TLS_CACERTDIR:
1254 *(char **)arg = lo->ldo_tls_cacertdir ?
1255 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
1257 case LDAP_OPT_X_TLS_CERTFILE:
1258 *(char **)arg = lo->ldo_tls_certfile ?
1259 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
1261 case LDAP_OPT_X_TLS_KEYFILE:
1262 *(char **)arg = lo->ldo_tls_keyfile ?
1263 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
1265 case LDAP_OPT_X_TLS_DHFILE:
1266 *(char **)arg = lo->ldo_tls_dhfile ?
1267 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
1269 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1270 *(int *)arg = lo->ldo_tls_require_cert;
1272 #ifdef HAVE_OPENSSL_CRL
1273 case LDAP_OPT_X_TLS_CRLCHECK:
1274 *(int *)arg = lo->ldo_tls_crlcheck;
1277 case LDAP_OPT_X_TLS_RANDOM_FILE:
1278 *(char **)arg = tls_opt_randfile ?
1279 LDAP_STRDUP( tls_opt_randfile ) : NULL;
1281 case LDAP_OPT_X_TLS_SSL_CTX: {
1284 LDAPConn *conn = ld->ld_defconn;
1285 if ( conn != NULL ) {
1286 Sockbuf *sb = conn->lconn_sb;
1287 retval = ldap_pvt_tls_sb_ctx( sb );
1290 *(void **)arg = retval;
1293 case LDAP_OPT_X_TLS_CONNECT_CB:
1294 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
1296 case LDAP_OPT_X_TLS_CONNECT_ARG:
1297 *(void **)arg = lo->ldo_tls_connect_arg;
1306 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
1308 struct ldapoptions *lo;
1311 assert( LDAP_VALID( ld ) );
1313 if( !LDAP_VALID( ld ) ) {
1314 return LDAP_OPT_ERROR;
1317 lo = &ld->ld_options;
1320 /* Get pointer to global option structure */
1321 lo = LDAP_INT_GLOBAL_OPT();
1323 return LDAP_NO_MEMORY;
1328 case LDAP_OPT_X_TLS:
1329 if ( !arg ) return -1;
1331 switch( *(int *) arg ) {
1332 case LDAP_OPT_X_TLS_NEVER:
1333 case LDAP_OPT_X_TLS_DEMAND:
1334 case LDAP_OPT_X_TLS_ALLOW:
1335 case LDAP_OPT_X_TLS_TRY:
1336 case LDAP_OPT_X_TLS_HARD:
1338 lo->ldo_tls_mode = *(int *)arg;
1345 case LDAP_OPT_X_TLS_CTX:
1346 lo->ldo_tls_ctx = arg;
1348 case LDAP_OPT_X_TLS_CONNECT_CB:
1349 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
1351 case LDAP_OPT_X_TLS_CONNECT_ARG:
1352 lo->ldo_tls_connect_arg = arg;
1354 case LDAP_OPT_X_TLS_CACERTFILE:
1355 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
1356 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1358 case LDAP_OPT_X_TLS_CACERTDIR:
1359 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
1360 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1362 case LDAP_OPT_X_TLS_CERTFILE:
1363 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
1364 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1366 case LDAP_OPT_X_TLS_KEYFILE:
1367 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
1368 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1370 case LDAP_OPT_X_TLS_DHFILE:
1371 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
1372 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1374 case LDAP_OPT_X_TLS_REQUIRE_CERT:
1375 if ( !arg ) return -1;
1376 switch( *(int *) arg ) {
1377 case LDAP_OPT_X_TLS_NEVER:
1378 case LDAP_OPT_X_TLS_DEMAND:
1379 case LDAP_OPT_X_TLS_ALLOW:
1380 case LDAP_OPT_X_TLS_TRY:
1381 case LDAP_OPT_X_TLS_HARD:
1382 lo->ldo_tls_require_cert = * (int *) arg;
1386 #ifdef HAVE_OPENSSL_CRL
1387 case LDAP_OPT_X_TLS_CRLCHECK:
1388 if ( !arg ) return -1;
1389 switch( *(int *) arg ) {
1390 case LDAP_OPT_X_TLS_CRL_NONE:
1391 case LDAP_OPT_X_TLS_CRL_PEER:
1392 case LDAP_OPT_X_TLS_CRL_ALL:
1393 lo->ldo_tls_crlcheck = * (int *) arg;
1398 case LDAP_OPT_X_TLS_CIPHER_SUITE:
1399 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
1400 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1403 case LDAP_OPT_X_TLS_RANDOM_FILE:
1406 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
1407 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
1410 case LDAP_OPT_X_TLS_NEWCTX:
1411 if ( !arg ) return -1;
1412 lo->ldo_tls_ctx = NULL;
1413 return ldap_int_tls_init_ctx( lo, *(int *)arg );
1421 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
1423 Sockbuf *sb = conn->lconn_sb;
1428 host = srv->lud_host;
1430 host = conn->lconn_server->lud_host;
1433 /* avoid NULL host */
1434 if( host == NULL ) {
1438 (void) ldap_pvt_tls_init();
1441 * Fortunately, the lib uses blocking io...
1443 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
1444 ld->ld_errno = LDAP_CONNECT_ERROR;
1445 return (ld->ld_errno);
1448 ssl = ldap_pvt_tls_sb_ctx( sb );
1449 assert( ssl != NULL );
1452 * compare host with name(s) in certificate
1454 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
1455 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
1456 if (ld->ld_errno != LDAP_SUCCESS) {
1457 return ld->ld_errno;
1461 return LDAP_SUCCESS;
1464 /* Derived from openssl/apps/s_cb.c */
1466 tls_info_cb( const SSL *ssl, int where, int ret )
1470 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
1472 w = where & ~SSL_ST_MASK;
1473 if ( w & SSL_ST_CONNECT ) {
1475 } else if ( w & SSL_ST_ACCEPT ) {
1483 state = LDAP_STRDUP( state );
1487 if ( where & SSL_CB_LOOP ) {
1488 Debug( LDAP_DEBUG_TRACE,
1489 "TLS trace: %s:%s\n",
1492 } else if ( where & SSL_CB_ALERT ) {
1493 char *atype = (char *) SSL_alert_type_string_long( ret );
1494 char *adesc = (char *) SSL_alert_desc_string_long( ret );
1495 op = ( where & SSL_CB_READ ) ? "read" : "write";
1498 atype = LDAP_STRDUP( atype );
1502 adesc = LDAP_STRDUP( adesc );
1506 Debug( LDAP_DEBUG_TRACE,
1507 "TLS trace: SSL3 alert %s:%s:%s\n",
1510 if ( atype ) LDAP_FREE( atype );
1511 if ( adesc ) LDAP_FREE( adesc );
1513 } else if ( where & SSL_CB_EXIT ) {
1515 Debug( LDAP_DEBUG_TRACE,
1516 "TLS trace: %s:failed in %s\n",
1518 } else if ( ret < 0 ) {
1519 Debug( LDAP_DEBUG_TRACE,
1520 "TLS trace: %s:error in %s\n",
1525 if ( state ) LDAP_FREE( state );
1530 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
1539 char *certerr = NULL;
1541 cert = X509_STORE_CTX_get_current_cert( ctx );
1542 errnum = X509_STORE_CTX_get_error( ctx );
1543 errdepth = X509_STORE_CTX_get_error_depth( ctx );
1546 * X509_get_*_name return pointers to the internal copies of
1547 * those things requested. So do not free them.
1549 subject = X509_get_subject_name( cert );
1550 issuer = X509_get_issuer_name( cert );
1551 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
1552 sname = X509_NAME_oneline( subject, NULL, 0 );
1553 iname = X509_NAME_oneline( issuer, NULL, 0 );
1554 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
1556 if ( sname ) __etoa( sname );
1557 if ( iname ) __etoa( iname );
1559 certerr = LDAP_STRDUP( certerr );
1563 Debug( LDAP_DEBUG_TRACE,
1564 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
1566 sname ? sname : "-unknown-" );
1567 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1569 Debug( LDAP_DEBUG_ANY,
1570 "TLS certificate verification: Error, %s\n",
1574 CRYPTO_free ( sname );
1576 CRYPTO_free ( iname );
1578 if ( certerr ) LDAP_FREE( certerr );
1584 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
1586 (void) tls_verify_cb( ok, ctx );
1590 /* Inspired by ERR_print_errors in OpenSSL */
1592 tls_report_error( void )
1599 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1600 ERR_error_string_n( l, buf, sizeof( buf ) );
1603 file = LDAP_STRDUP( file );
1604 __etoa( (char *)file );
1608 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1611 if ( file ) LDAP_FREE( (void *)file );
1617 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1621 /* FIXME: Pregenerate the key on startup */
1622 /* FIXME: Who frees the key? */
1623 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1626 Debug( LDAP_DEBUG_ANY,
1627 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
1628 key_length, is_export ? "export" : "domestic", 0 );
1635 tls_seed_PRNG( const char *randfile )
1637 #ifndef URANDOM_DEVICE
1638 /* no /dev/urandom (or equiv) */
1640 char buffer[MAXPATHLEN];
1642 if (randfile == NULL) {
1643 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1644 * If $HOME is not set or buffer too small to hold the pathname,
1645 * an error occurs. - From RAND_file_name() man page.
1646 * The fact is that when $HOME is NULL, .rnd is used.
1648 randfile = RAND_file_name( buffer, sizeof( buffer ) );
1650 } else if (RAND_egd(randfile) > 0) {
1655 if (randfile == NULL) {
1656 Debug( LDAP_DEBUG_ANY,
1657 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1662 total = RAND_load_file(randfile, -1);
1664 if (RAND_status() == 0) {
1665 Debug( LDAP_DEBUG_ANY,
1666 "TLS: PRNG not been seeded with enough data\n",
1671 /* assume if there was enough bits to seed that it's okay
1672 * to write derived bits to the file
1674 RAND_write_file(randfile);
1688 /* From the OpenSSL 0.9.7 distro */
1689 static const char dhpem512[] =
1690 "-----BEGIN DH PARAMETERS-----\n\
1691 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1692 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1693 -----END DH PARAMETERS-----\n";
1695 static const char dhpem1024[] =
1696 "-----BEGIN DH PARAMETERS-----\n\
1697 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1698 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1699 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1700 -----END DH PARAMETERS-----\n";
1702 static const char dhpem2048[] =
1703 "-----BEGIN DH PARAMETERS-----\n\
1704 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1705 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1706 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1707 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1708 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1709 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1710 -----END DH PARAMETERS-----\n";
1712 static const char dhpem4096[] =
1713 "-----BEGIN DH PARAMETERS-----\n\
1714 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1715 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1716 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1717 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1718 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1719 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1720 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1721 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1722 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1723 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1724 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1725 -----END DH PARAMETERS-----\n";
1727 static const struct dhinfo dhpem[] = {
1728 { 512, dhpem512, sizeof(dhpem512) },
1729 { 1024, dhpem1024, sizeof(dhpem1024) },
1730 { 2048, dhpem2048, sizeof(dhpem2048) },
1731 { 4096, dhpem4096, sizeof(dhpem4096) },
1736 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1738 struct dhplist *p = NULL;
1743 /* Do we have params of this length already? */
1744 #ifdef LDAP_R_COMPILE
1745 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
1747 for ( p = dhparams; p; p=p->next ) {
1748 if ( p->keylength == key_length ) {
1749 #ifdef LDAP_R_COMPILE
1750 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1756 /* No - check for hardcoded params */
1758 for (i=0; dhpem[i].keylength; i++) {
1759 if ( dhpem[i].keylength == key_length ) {
1760 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
1766 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1770 /* Generating on the fly is expensive/slow... */
1772 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1775 p = LDAP_MALLOC( sizeof(struct dhplist) );
1777 p->keylength = key_length;
1784 #ifdef LDAP_R_COMPILE
1785 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
1792 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
1797 if (HAS_TLS( sb )) {
1798 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
1807 ldap_pvt_tls_get_strength( void *s )
1812 c = SSL_get_current_cipher((SSL *)s);
1813 return SSL_CIPHER_get_bits(c, NULL);
1821 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
1828 x = SSL_get_certificate((SSL *)s);
1830 if (!x) return LDAP_INVALID_CREDENTIALS;
1832 xn = X509_get_subject_name(x);
1833 rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
1836 return LDAP_NOT_SUPPORTED;
1841 ldap_start_tls( LDAP *ld,
1842 LDAPControl **serverctrls,
1843 LDAPControl **clientctrls,
1846 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
1847 NULL, serverctrls, clientctrls, msgidp );
1851 ldap_install_tls( LDAP *ld )
1854 return LDAP_NOT_SUPPORTED;
1856 if ( ldap_tls_inplace( ld ) ) {
1857 return LDAP_LOCAL_ERROR;
1860 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
1865 ldap_start_tls_s ( LDAP *ld,
1866 LDAPControl **serverctrls,
1867 LDAPControl **clientctrls )
1870 return LDAP_NOT_SUPPORTED;
1873 char *rspoid = NULL;
1874 struct berval *rspdata = NULL;
1876 /* XXYYZ: this initiates operation only on default connection! */
1878 if ( ldap_tls_inplace( ld ) ) {
1879 return LDAP_LOCAL_ERROR;
1882 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
1883 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
1885 if ( rspoid != NULL ) {
1889 if ( rspdata != NULL ) {
1890 ber_bvfree( rspdata );
1893 if ( rc == LDAP_SUCCESS ) {
1894 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );