1 /* tls.c - Handle tls/ssl using SSLeay, OpenSSL or GNUTLS. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2008 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>.
16 /* ACKNOWLEDGEMENTS: GNUTLS support written by Howard Chu and
17 * Matt Backes; sponsored by The Written Word (thewrittenword.com)
18 * and Stanford University (stanford.edu).
22 #include "ldap_config.h"
26 #include <ac/stdlib.h>
28 #include <ac/socket.h>
29 #include <ac/string.h>
32 #include <ac/unistd.h>
34 #include <ac/dirent.h>
41 #include <ldap_pvt_thread.h>
45 #include <gnutls/gnutls.h>
46 #include <gnutls/x509.h>
49 #define DH_BITS (1024)
52 #ifdef HAVE_OPENSSL_SSL_H
53 #include <openssl/ssl.h>
54 #include <openssl/x509v3.h>
55 #include <openssl/err.h>
56 #include <openssl/rand.h>
57 #include <openssl/safestack.h>
58 #elif defined( HAVE_SSL_H )
63 #define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
64 (void *)&sb_tls_sbio )
68 /* RFC2459 minimum required set of supported attribute types
71 typedef struct oid_name {
76 #define CN_OID oids[0].oid.bv_val
78 static oid_name oids[] = {
79 { BER_BVC("2.5.4.3"), BER_BVC("cn") },
80 { BER_BVC("2.5.4.4"), BER_BVC("sn") },
81 { BER_BVC("2.5.4.6"), BER_BVC("c") },
82 { BER_BVC("2.5.4.7"), BER_BVC("l") },
83 { BER_BVC("2.5.4.8"), BER_BVC("st") },
84 { BER_BVC("2.5.4.10"), BER_BVC("o") },
85 { BER_BVC("2.5.4.11"), BER_BVC("ou") },
86 { BER_BVC("2.5.4.12"), BER_BVC("title") },
87 { BER_BVC("2.5.4.41"), BER_BVC("name") },
88 { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
89 { BER_BVC("2.5.4.43"), BER_BVC("initials") },
90 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
91 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
92 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
93 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
94 { BER_BVNULL, BER_BVNULL }
100 typedef struct tls_cipher_suite {
102 gnutls_kx_algorithm_t kx;
103 gnutls_cipher_algorithm_t cipher;
104 gnutls_mac_algorithm_t mac;
105 gnutls_protocol_t version;
108 static tls_cipher_suite *ciphers;
109 static int n_ciphers;
111 /* sorta replacing SSL_CTX */
112 typedef struct tls_ctx {
113 struct ldapoptions *lo;
114 gnutls_certificate_credentials_t cred;
115 gnutls_dh_params_t dh_params;
116 unsigned long verify_depth;
121 #ifdef LDAP_R_COMPILE
122 ldap_pvt_thread_mutex_t ref_mutex;
126 /* sorta replacing SSL */
127 typedef struct tls_session {
129 gnutls_session_t session;
130 struct berval peer_der_dn;
133 #ifdef LDAP_R_COMPILE
136 ldap_pvt_gcry_mutex_init( void **priv )
139 ldap_pvt_thread_mutex_t *lock = LDAP_MALLOC( sizeof( ldap_pvt_thread_mutex_t ));
144 err = ldap_pvt_thread_mutex_init( lock );
153 ldap_pvt_gcry_mutex_destroy( void **lock )
155 int err = ldap_pvt_thread_mutex_destroy( *lock );
160 ldap_pvt_gcry_mutex_lock( void **lock )
162 return ldap_pvt_thread_mutex_lock( *lock );
165 ldap_pvt_gcry_mutex_unlock( void **lock )
167 return ldap_pvt_thread_mutex_unlock( *lock );
170 static struct gcry_thread_cbs ldap_generic_thread_cbs = {
171 GCRY_THREAD_OPTION_USER,
173 ldap_pvt_gcry_mutex_init,
174 ldap_pvt_gcry_mutex_destroy,
175 ldap_pvt_gcry_mutex_lock,
176 ldap_pvt_gcry_mutex_unlock,
177 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
181 tls_init_threads( void )
183 gcry_control (GCRYCTL_SET_THREAD_CBS, &ldap_generic_thread_cbs);
185 #endif /* LDAP_R_COMPILE */
188 ldap_pvt_tls_ctx_free ( void *c )
195 #ifdef LDAP_R_COMPILE
196 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
198 refcount = --ctx->refcount;
199 #ifdef LDAP_R_COMPILE
200 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
204 LDAP_FREE( ctx->kx_list );
205 gnutls_certificate_free_credentials( ctx->cred );
210 tls_ctx_new ( struct ldapoptions *lo )
214 ctx = ber_memcalloc ( 1, sizeof (*ctx) );
217 if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
222 #ifdef LDAP_R_COMPILE
223 ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
230 tls_ctx_ref( tls_ctx *ctx )
232 #ifdef LDAP_R_COMPILE
233 ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
236 #ifdef LDAP_R_COMPILE
237 ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
242 tls_session_new ( tls_ctx * ctx, int is_server )
244 tls_session *session;
246 session = ber_memcalloc ( 1, sizeof (*session) );
251 gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
252 gnutls_set_default_priority( session->session );
253 if ( ctx->kx_list ) {
254 gnutls_kx_set_priority( session->session, ctx->kx_list );
255 gnutls_cipher_set_priority( session->session, ctx->cipher_list );
256 gnutls_mac_set_priority( session->session, ctx->mac_list );
259 gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, ctx->cred );
263 if ( ctx->lo->ldo_tls_require_cert ) {
264 flag = GNUTLS_CERT_REQUEST;
265 if ( ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
266 ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
267 flag = GNUTLS_CERT_REQUIRE;
268 gnutls_certificate_server_set_request( session->session, flag );
275 tls_session_free ( tls_session * session )
277 ber_memfree ( session );
280 #define tls_session_connect( ssl ) gnutls_handshake( ssl->session )
281 #define tls_session_accept( ssl ) gnutls_handshake( ssl->session )
283 /* suites is a string of colon-separated cipher suite names. */
285 tls_parse_ciphers( tls_ctx *ctx, char *suites )
289 int *list, nkx = 0, ncipher = 0, nmac = 0;
290 int *kx, *cipher, *mac;
295 end = strchr(ptr, ':');
300 for (i=0; i<n_ciphers; i++) {
301 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
306 if ( i == n_ciphers ) {
307 /* unrecognized cipher suite */
313 /* Space for all 3 lists */
314 list = LDAP_MALLOC( (num+1) * sizeof(int) * 3 );
323 end = strchr(ptr, ':');
328 for (i=0; i<n_ciphers; i++) {
329 /* For each cipher suite, insert its algorithms into
330 * their respective priority lists. Make sure they
331 * only appear once in each list.
333 if ( !strncasecmp( ciphers[i].name, ptr, len )) {
334 for (j=0; j<nkx; j++)
335 if ( kx[j] == ciphers[i].kx )
338 kx[nkx++] = ciphers[i].kx;
339 for (j=0; j<ncipher; j++)
340 if ( cipher[j] == ciphers[i].cipher )
343 cipher[ncipher++] = ciphers[i].cipher;
344 for (j=0; j<nmac; j++)
345 if ( mac[j] == ciphers[i].mac )
348 mac[nmac++] = ciphers[i].mac;
358 ctx->cipher_list = cipher;
365 typedef SSL_CTX tls_ctx;
366 typedef SSL tls_session;
368 static int tls_opt_trace = 1;
369 static char *tls_opt_randfile = NULL;
371 static void tls_report_error( void );
373 static void tls_info_cb( const SSL *ssl, int where, int ret );
374 static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
375 static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
376 static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
378 static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
380 typedef struct dhplist {
381 struct dhplist *next;
386 static dhplist *dhparams;
388 static int tls_seed_PRNG( const char *randfile );
390 #ifdef LDAP_R_COMPILE
392 * provide mutexes for the SSLeay library.
394 static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
396 static void tls_locking_cb( int mode, int type, const char *file, int line )
398 if ( mode & CRYPTO_LOCK ) {
399 ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
401 ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
405 static unsigned long tls_thread_self( void )
407 /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
408 * is an integral type that fits in an unsigned long
411 /* force an error if the ldap_pvt_thread_t type is too large */
412 enum { ok = sizeof( ldap_pvt_thread_t ) <= sizeof( unsigned long ) };
413 typedef struct { int dummy: ok ? 1 : -1; } Check[ok ? 1 : -1];
415 return (unsigned long) ldap_pvt_thread_self();
418 static void tls_init_threads( void )
422 for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
423 ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
425 CRYPTO_set_locking_callback( tls_locking_cb );
426 CRYPTO_set_id_callback( tls_thread_self );
428 #endif /* LDAP_R_COMPILE */
431 ldap_pvt_tls_ctx_free ( void *c )
438 tls_ctx_new( struct ldapoptions *lo )
440 return SSL_CTX_new( SSLv23_method() );
444 tls_ctx_ref( void *c )
447 CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
451 tls_session_new( tls_ctx *ctx, int is_server )
453 return SSL_new( ctx );
456 #define tls_session_connect( ssl ) SSL_connect( ssl )
457 #define tls_session_accept( ssl ) SSL_accept( ssl )
459 static STACK_OF(X509_NAME) *
460 get_ca_list( char * bundle, char * dir )
462 STACK_OF(X509_NAME) *ca_list = NULL;
465 ca_list = SSL_load_client_CA_file( bundle );
467 #if defined(HAVE_DIRENT_H) || defined(dirent)
472 ca_list = sk_X509_NAME_new_null();
475 if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
477 sk_X509_NAME_free( ca_list );
485 #endif /* HAVE_GNUTLS */
487 #ifdef LDAP_R_COMPILE
489 * an extra mutex for the default ctx.
491 static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
495 ldap_int_tls_destroy( struct ldapoptions *lo )
497 if ( lo->ldo_tls_ctx ) {
498 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
499 lo->ldo_tls_ctx = NULL;
502 if ( lo->ldo_tls_certfile ) {
503 LDAP_FREE( lo->ldo_tls_certfile );
504 lo->ldo_tls_certfile = NULL;
506 if ( lo->ldo_tls_keyfile ) {
507 LDAP_FREE( lo->ldo_tls_keyfile );
508 lo->ldo_tls_keyfile = NULL;
510 if ( lo->ldo_tls_dhfile ) {
511 LDAP_FREE( lo->ldo_tls_dhfile );
512 lo->ldo_tls_dhfile = NULL;
514 if ( lo->ldo_tls_cacertfile ) {
515 LDAP_FREE( lo->ldo_tls_cacertfile );
516 lo->ldo_tls_cacertfile = NULL;
518 if ( lo->ldo_tls_cacertdir ) {
519 LDAP_FREE( lo->ldo_tls_cacertdir );
520 lo->ldo_tls_cacertdir = NULL;
522 if ( lo->ldo_tls_ciphersuite ) {
523 LDAP_FREE( lo->ldo_tls_ciphersuite );
524 lo->ldo_tls_ciphersuite = NULL;
527 if ( lo->ldo_tls_crlfile ) {
528 LDAP_FREE( lo->ldo_tls_crlfile );
529 lo->ldo_tls_crlfile = NULL;
535 * Tear down the TLS subsystem. Should only be called once.
538 ldap_pvt_tls_destroy( void )
540 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
542 ldap_int_tls_destroy( lo );
545 LDAP_FREE( ciphers );
548 gnutls_global_deinit();
554 if ( tls_opt_randfile ) {
555 LDAP_FREE( tls_opt_randfile );
556 tls_opt_randfile = NULL;
562 * Initialize TLS subsystem. Should be called only once.
565 ldap_pvt_tls_init( void )
567 static int tls_initialized = 0;
569 if ( tls_initialized++ ) return 0;
571 #ifdef LDAP_R_COMPILE
573 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
577 gnutls_global_init ();
579 /* GNUtls cipher suite handling: The library ought to parse suite
580 * names for us, but it doesn't. It will return a list of suite names
581 * that it supports, so we can do parsing ourselves. It ought to tell
582 * us how long the list is, but it doesn't do that either, so we just
583 * have to count it manually...
587 tls_cipher_suite *ptr, tmp;
590 while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
591 &tmp.mac, &tmp.version ))
596 ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
599 for ( i=0; i<n_ciphers; i++ ) {
600 ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
601 &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
602 &ciphers[i].version );
606 #else /* !HAVE_GNUTLS */
610 char *file = LDAP_STRDUP( tls_opt_randfile );
611 if ( file ) __atoe( file );
612 (void) tls_seed_PRNG( file );
616 (void) tls_seed_PRNG( tls_opt_randfile );
619 SSL_load_error_strings();
620 SSLeay_add_ssl_algorithms();
622 /* FIXME: mod_ssl does this */
623 X509V3_add_standard_extensions();
625 #endif /* HAVE_GNUTLS */
630 * initialize a new TLS context
633 ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
636 char *ciphersuite = lo->ldo_tls_ciphersuite;
637 char *cacertfile = lo->ldo_tls_cacertfile;
638 char *cacertdir = lo->ldo_tls_cacertdir;
639 char *certfile = lo->ldo_tls_certfile;
640 char *keyfile = lo->ldo_tls_keyfile;
642 char *crlfile = lo->ldo_tls_crlfile;
644 char *dhfile = lo->ldo_tls_dhfile;
647 if ( lo->ldo_tls_ctx )
652 if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
653 /* minimum configuration not provided */
654 return LDAP_NOT_SUPPORTED;
658 /* This ASCII/EBCDIC handling is a real pain! */
660 ciphersuite = LDAP_STRDUP( ciphersuite );
661 __atoe( ciphersuite );
664 cacertfile = LDAP_STRDUP( cacertfile );
665 __atoe( cacertfile );
668 certfile = LDAP_STRDUP( certfile );
672 keyfile = LDAP_STRDUP( keyfile );
677 crlfile = LDAP_STRDUP( crlfile );
682 cacertdir = LDAP_STRDUP( cacertdir );
686 dhfile = LDAP_STRDUP( dhfile );
691 lo->ldo_tls_ctx = tls_ctx_new( lo );
692 if ( lo->ldo_tls_ctx == NULL ) {
694 Debug( LDAP_DEBUG_ANY,
695 "TLS: could not allocate default ctx.\n",
698 Debug( LDAP_DEBUG_ANY,
699 "TLS: could not allocate default ctx (%lu).\n",
700 ERR_peek_error(),0,0);
707 if ( lo->ldo_tls_ciphersuite &&
708 tls_parse_ciphers( lo->ldo_tls_ctx,
710 Debug( LDAP_DEBUG_ANY,
711 "TLS: could not set cipher list %s.\n",
712 lo->ldo_tls_ciphersuite, 0, 0 );
717 if (lo->ldo_tls_cacertdir != NULL) {
718 Debug( LDAP_DEBUG_ANY,
719 "TLS: warning: cacertdir not implemented for gnutls\n",
723 if (lo->ldo_tls_cacertfile != NULL) {
724 rc = gnutls_certificate_set_x509_trust_file(
725 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
727 GNUTLS_X509_FMT_PEM );
728 if ( rc < 0 ) goto error_exit;
731 if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
732 rc = gnutls_certificate_set_x509_key_file(
733 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
736 GNUTLS_X509_FMT_PEM );
737 if ( rc ) goto error_exit;
738 } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
739 Debug( LDAP_DEBUG_ANY,
740 "TLS: only one of certfile and keyfile specified\n",
746 if ( lo->ldo_tls_dhfile ) {
747 Debug( LDAP_DEBUG_ANY,
748 "TLS: warning: ignoring dhfile\n",
752 if ( lo->ldo_tls_crlfile ) {
753 rc = gnutls_certificate_set_x509_crl_file(
754 ((tls_ctx*) lo->ldo_tls_ctx)->cred,
756 GNUTLS_X509_FMT_PEM );
757 if ( rc < 0 ) goto error_exit;
760 gnutls_dh_params_init (&((tls_ctx*)
761 lo->ldo_tls_ctx)->dh_params);
762 gnutls_dh_params_generate2 (((tls_ctx*)
763 lo->ldo_tls_ctx)->dh_params,
767 #else /* !HAVE_GNUTLS */
770 SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
771 (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
774 if ( lo->ldo_tls_ciphersuite &&
775 !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
777 Debug( LDAP_DEBUG_ANY,
778 "TLS: could not set cipher list %s.\n",
779 lo->ldo_tls_ciphersuite, 0, 0 );
785 if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
786 if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
787 cacertfile, cacertdir ) ||
788 !SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
790 Debug( LDAP_DEBUG_ANY, "TLS: "
791 "could not load verify locations (file:`%s',dir:`%s').\n",
792 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
793 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
801 STACK_OF(X509_NAME) *calist;
802 /* List of CA names to send to a client */
803 calist = get_ca_list( cacertfile, cacertdir );
805 Debug( LDAP_DEBUG_ANY, "TLS: "
806 "could not load client CA list (file:`%s',dir:`%s').\n",
807 lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
808 lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
815 SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
819 if ( lo->ldo_tls_certfile &&
820 !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
821 certfile, SSL_FILETYPE_PEM ) )
823 Debug( LDAP_DEBUG_ANY,
824 "TLS: could not use certificate `%s'.\n",
825 lo->ldo_tls_certfile,0,0);
831 /* Key validity is checked automatically if cert has already been set */
832 if ( lo->ldo_tls_keyfile &&
833 !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
834 keyfile, SSL_FILETYPE_PEM ) )
836 Debug( LDAP_DEBUG_ANY,
837 "TLS: could not use key file `%s'.\n",
838 lo->ldo_tls_keyfile,0,0);
844 if ( lo->ldo_tls_dhfile ) {
849 if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
850 Debug( LDAP_DEBUG_ANY,
851 "TLS: could not use DH parameters file `%s'.\n",
852 lo->ldo_tls_dhfile,0,0);
857 while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
858 p = LDAP_MALLOC( sizeof(dhplist) );
860 p->keylength = DH_size( dh ) * 8;
869 if ( tls_opt_trace ) {
870 SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
874 if ( lo->ldo_tls_require_cert ) {
876 if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
877 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
878 i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
882 SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
883 lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
884 tls_verify_ok : tls_verify_cb );
885 SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
886 if ( lo->ldo_tls_dhfile ) {
887 SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
889 #ifdef HAVE_OPENSSL_CRL
890 if ( lo->ldo_tls_crlcheck ) {
891 X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
892 if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
893 X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
894 } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
895 X509_STORE_set_flags( x509_s,
896 X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
901 #endif /* HAVE_GNUTLS */
904 if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
905 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
906 lo->ldo_tls_ctx = NULL;
909 LDAP_FREE( ciphersuite );
910 LDAP_FREE( cacertfile );
911 LDAP_FREE( certfile );
912 LDAP_FREE( keyfile );
914 LDAP_FREE( crlfile );
916 LDAP_FREE( cacertdir );
924 * initialize the default context
927 ldap_pvt_tls_init_def_ctx( int is_server )
929 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
931 #ifdef LDAP_R_COMPILE
932 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
934 rc = ldap_int_tls_init_ctx( lo, is_server );
935 #ifdef LDAP_R_COMPILE
936 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
942 alloc_handle( void *ctx_arg, int is_server )
950 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
951 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
952 ctx = lo->ldo_tls_ctx;
955 ssl = tls_session_new( ctx, is_server );
957 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
964 update_flags( Sockbuf *sb, tls_session * ssl, int rc )
966 sb->sb_trans_needs_read = 0;
967 sb->sb_trans_needs_write = 0;
970 if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
973 switch (gnutls_record_get_direction (ssl->session)) {
975 sb->sb_trans_needs_read = 1;
978 sb->sb_trans_needs_write = 1;
981 #else /* !HAVE_GNUTLS */
982 rc = SSL_get_error(ssl, rc);
983 if (rc == SSL_ERROR_WANT_READ) {
984 sb->sb_trans_needs_read = 1;
987 } else if (rc == SSL_ERROR_WANT_WRITE) {
988 sb->sb_trans_needs_write = 1;
991 } else if (rc == SSL_ERROR_WANT_CONNECT) {
994 #endif /* HAVE_GNUTLS */
999 * TLS support for LBER Sockbufs
1004 Sockbuf_IO_Desc *sbiod;
1010 sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
1014 if ( buf == NULL || len <= 0 ) return 0;
1016 p = (struct tls_data *)ptr;
1018 if ( p == NULL || p->sbiod == NULL ) {
1022 return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1026 sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1030 if ( buf == NULL || len <= 0 ) return 0;
1032 p = (struct tls_data *)ptr;
1034 if ( p == NULL || p->sbiod == NULL ) {
1038 return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1042 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1045 tls_session *session = arg;
1047 assert( sbiod != NULL );
1049 p = LBER_MALLOC( sizeof( *p ) );
1054 gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1055 gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1056 gnutls_transport_set_push_function( session->session, sb_gtls_send );
1059 sbiod->sbiod_pvt = p;
1064 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1068 assert( sbiod != NULL );
1069 assert( sbiod->sbiod_pvt != NULL );
1071 p = (struct tls_data *)sbiod->sbiod_pvt;
1072 gnutls_deinit ( p->ssl->session );
1073 LBER_FREE( p->ssl );
1074 LBER_FREE( sbiod->sbiod_pvt );
1075 sbiod->sbiod_pvt = NULL;
1080 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1084 assert( sbiod != NULL );
1085 assert( sbiod->sbiod_pvt != NULL );
1087 p = (struct tls_data *)sbiod->sbiod_pvt;
1088 gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1093 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1097 assert( sbiod != NULL );
1098 assert( sbiod->sbiod_pvt != NULL );
1100 p = (struct tls_data *)sbiod->sbiod_pvt;
1102 if ( opt == LBER_SB_OPT_GET_SSL ) {
1103 *((tls_session **)arg) = p->ssl;
1106 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1107 if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1112 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1116 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1122 assert( sbiod != NULL );
1123 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1125 p = (struct tls_data *)sbiod->sbiod_pvt;
1127 ret = gnutls_record_recv ( p->ssl->session, buf, len );
1129 case GNUTLS_E_INTERRUPTED:
1130 case GNUTLS_E_AGAIN:
1131 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1132 sock_errset(EWOULDBLOCK);
1135 case GNUTLS_E_REHANDSHAKE:
1136 for ( ret = gnutls_handshake ( p->ssl->session );
1137 ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1138 ret = gnutls_handshake ( p->ssl->session ) );
1139 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1143 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1149 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1155 assert( sbiod != NULL );
1156 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1158 p = (struct tls_data *)sbiod->sbiod_pvt;
1160 ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1162 if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1163 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1164 sock_errset(EWOULDBLOCK);
1167 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1172 #else /* !HAVE_GNUTLS */
1175 sb_tls_bio_create( BIO *b ) {
1184 sb_tls_bio_destroy( BIO *b )
1186 if ( b == NULL ) return 0;
1188 b->ptr = NULL; /* sb_tls_remove() will free it */
1195 sb_tls_bio_read( BIO *b, char *buf, int len )
1200 if ( buf == NULL || len <= 0 ) return 0;
1202 p = (struct tls_data *)b->ptr;
1204 if ( p == NULL || p->sbiod == NULL ) {
1208 ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1210 BIO_clear_retry_flags( b );
1212 int err = sock_errno();
1213 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1214 BIO_set_retry_read( b );
1222 sb_tls_bio_write( BIO *b, const char *buf, int len )
1227 if ( buf == NULL || len <= 0 ) return 0;
1229 p = (struct tls_data *)b->ptr;
1231 if ( p == NULL || p->sbiod == NULL ) {
1235 ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1237 BIO_clear_retry_flags( b );
1239 int err = sock_errno();
1240 if ( err == EAGAIN || err == EWOULDBLOCK ) {
1241 BIO_set_retry_write( b );
1249 sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1251 if ( cmd == BIO_CTRL_FLUSH ) {
1252 /* The OpenSSL library needs this */
1259 sb_tls_bio_gets( BIO *b, char *buf, int len )
1265 sb_tls_bio_puts( BIO *b, const char *str )
1267 return sb_tls_bio_write( b, str, strlen( str ) );
1270 static BIO_METHOD sb_tls_bio_method =
1272 ( 100 | 0x400 ), /* it's a source/sink BIO */
1284 sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1289 assert( sbiod != NULL );
1291 p = LBER_MALLOC( sizeof( *p ) );
1296 p->ssl = (SSL *)arg;
1298 bio = BIO_new( &sb_tls_bio_method );
1299 bio->ptr = (void *)p;
1300 SSL_set_bio( p->ssl, bio, bio );
1301 sbiod->sbiod_pvt = p;
1306 sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1310 assert( sbiod != NULL );
1311 assert( sbiod->sbiod_pvt != NULL );
1313 p = (struct tls_data *)sbiod->sbiod_pvt;
1315 LBER_FREE( sbiod->sbiod_pvt );
1316 sbiod->sbiod_pvt = NULL;
1321 sb_tls_close( Sockbuf_IO_Desc *sbiod )
1325 assert( sbiod != NULL );
1326 assert( sbiod->sbiod_pvt != NULL );
1328 p = (struct tls_data *)sbiod->sbiod_pvt;
1329 SSL_shutdown( p->ssl );
1334 sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1338 assert( sbiod != NULL );
1339 assert( sbiod->sbiod_pvt != NULL );
1341 p = (struct tls_data *)sbiod->sbiod_pvt;
1343 if ( opt == LBER_SB_OPT_GET_SSL ) {
1344 *((SSL **)arg) = p->ssl;
1347 } else if ( opt == LBER_SB_OPT_DATA_READY ) {
1348 if( SSL_pending( p->ssl ) > 0 ) {
1353 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1357 sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1363 assert( sbiod != NULL );
1364 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1366 p = (struct tls_data *)sbiod->sbiod_pvt;
1368 ret = SSL_read( p->ssl, (char *)buf, len );
1370 errno = WSAGetLastError();
1372 err = SSL_get_error( p->ssl, ret );
1373 if (err == SSL_ERROR_WANT_READ ) {
1374 sbiod->sbiod_sb->sb_trans_needs_read = 1;
1375 sock_errset(EWOULDBLOCK);
1378 sbiod->sbiod_sb->sb_trans_needs_read = 0;
1383 sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1389 assert( sbiod != NULL );
1390 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1392 p = (struct tls_data *)sbiod->sbiod_pvt;
1394 ret = SSL_write( p->ssl, (char *)buf, len );
1396 errno = WSAGetLastError();
1398 err = SSL_get_error( p->ssl, ret );
1399 if (err == SSL_ERROR_WANT_WRITE ) {
1400 sbiod->sbiod_sb->sb_trans_needs_write = 1;
1401 sock_errset(EWOULDBLOCK);
1404 sbiod->sbiod_sb->sb_trans_needs_write = 0;
1411 static Sockbuf_IO sb_tls_sbio =
1413 sb_tls_setup, /* sbi_setup */
1414 sb_tls_remove, /* sbi_remove */
1415 sb_tls_ctrl, /* sbi_ctrl */
1416 sb_tls_read, /* sbi_read */
1417 sb_tls_write, /* sbi_write */
1418 sb_tls_close /* sbi_close */
1422 /* Certs are not automatically varified during the handshake */
1424 tls_cert_verify( tls_session *ssl )
1426 unsigned int status = 0;
1428 time_t now = time(0);
1430 err = gnutls_certificate_verify_peers2( ssl->session, &status );
1432 Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1437 Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1441 if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1442 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1446 if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1447 Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1453 #endif /* HAVE_GNUTLS */
1456 * Call this to do a TLS connect on a sockbuf. ctx_arg can be
1457 * a SSL_CTX * or NULL, in which case the default ctx is used.
1461 * 0 - Success. Connection is ready for communication.
1462 * <0 - Error. Can't create a TLS stream.
1463 * >0 - Partial success.
1464 * Do a select (using information from lber_pvt_sb_needs_{read,write}
1469 ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1471 Sockbuf *sb = conn->lconn_sb;
1475 if ( HAS_TLS( sb ) ) {
1476 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1479 struct ldapoptions *lo;
1482 ctx = ld->ld_options.ldo_tls_ctx;
1484 ssl = alloc_handle( ctx, 0 );
1486 if ( ssl == NULL ) return -1;
1489 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1490 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1492 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1493 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1495 lo = LDAP_INT_GLOBAL_OPT();
1497 ctx = lo->ldo_tls_ctx;
1498 ld->ld_options.ldo_tls_ctx = ctx;
1501 if ( ld->ld_options.ldo_tls_connect_cb )
1502 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1503 ld->ld_options.ldo_tls_connect_arg );
1504 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1505 ld->ld_options.ldo_tls_connect_cb )
1506 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1509 err = tls_session_connect( ssl );
1512 errno = WSAGetLastError();
1521 if ( update_flags( sb, ssl, err )) {
1526 if ((err = ERR_peek_error()))
1529 if ( ld->ld_error ) {
1530 LDAP_FREE( ld->ld_error );
1533 ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1537 ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1541 if ( ld->ld_error ) __etoa(ld->ld_error);
1545 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1546 ld->ld_error ? ld->ld_error : "" ,0,0);
1548 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1549 LBER_SBIOD_LEVEL_TRANSPORT );
1551 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1552 LBER_SBIOD_LEVEL_TRANSPORT );
1558 if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1559 err = tls_cert_verify( ssl );
1560 if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1569 * Call this to do a TLS accept on a sockbuf.
1570 * Everything else is the same as with tls_connect.
1573 ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1578 if ( HAS_TLS( sb ) ) {
1579 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1582 ssl = alloc_handle( ctx_arg, 1 );
1583 if ( ssl == NULL ) return -1;
1586 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1587 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1589 ber_sockbuf_add_io( sb, &sb_tls_sbio,
1590 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1593 err = tls_session_accept( ssl );
1596 errno = WSAGetLastError();
1605 if ( update_flags( sb, ssl, err )) return 1;
1608 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1609 gnutls_strerror( err ),0,0 );
1611 Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1614 ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1615 LBER_SBIOD_LEVEL_TRANSPORT );
1617 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1618 LBER_SBIOD_LEVEL_TRANSPORT );
1624 if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1625 err = tls_cert_verify( ssl );
1626 if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1634 ldap_pvt_tls_inplace ( Sockbuf *sb )
1636 return HAS_TLS( sb ) ? 1 : 0;
1640 ldap_tls_inplace( LDAP *ld )
1644 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1645 sb = ld->ld_defconn->lconn_sb;
1647 } else if ( ld->ld_sb ) {
1654 return ldap_pvt_tls_inplace( sb );
1659 x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1661 BerElementBuffer berbuf;
1662 BerElement *ber = (BerElement *)&berbuf;
1667 ber_init2( ber, cert, LBER_USE_DER );
1668 tag = ber_skip_tag( ber, &len ); /* Sequence */
1669 tag = ber_skip_tag( ber, &len ); /* Sequence */
1670 tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1671 if ( tag == 0xa0 ) /* Version is optional */
1672 tag = ber_get_int( ber, &i ); /* Int: Version */
1673 tag = ber_get_int( ber, &i ); /* Int: Serial */
1674 tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1675 ber_skip_data( ber, len );
1676 if ( !get_subject ) {
1677 tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1679 tag = ber_skip_tag( ber, &len );
1680 ber_skip_data( ber, len );
1681 tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1682 ber_skip_data( ber, len );
1683 tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1685 len = ber_ptrlen( ber );
1686 dn->bv_val = cert->bv_val + len;
1687 dn->bv_len = cert->bv_len - len;
1691 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1693 if ( !session->peer_der_dn.bv_val ) {
1694 const gnutls_datum_t *peer_cert_list;
1698 peer_cert_list = gnutls_certificate_get_peers( session->session,
1700 if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1702 bv.bv_len = peer_cert_list->size;
1703 bv.bv_val = peer_cert_list->data;
1705 x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1706 *dnbv = session->peer_der_dn;
1710 #else /* !HAVE_GNUTLS */
1712 tls_get_cert( SSL *s )
1714 /* If peer cert was bad, treat as if no cert was given */
1715 if (SSL_get_verify_result(s)) {
1716 /* If we can send an alert, do so */
1717 if (SSL_version(s) != SSL2_VERSION) {
1718 ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1722 return SSL_get_peer_certificate(s);
1726 tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1729 X509 *x = tls_get_cert( session );
1732 return LDAP_INVALID_CREDENTIALS;
1734 xn = X509_get_subject_name(x);
1735 dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1736 dnbv->bv_val = xn->bytes->data;
1739 #endif /* HAVE_GNUTLS */
1742 ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1743 LDAPDN_rewrite_dummy *func, unsigned flags )
1745 tls_session *session = s;
1749 rc = tls_get_cert_dn( session, &bvdn );
1750 if ( rc ) return rc;
1752 rc = ldap_X509dn2bv( &bvdn, dn,
1753 (LDAPDN_rewrite_func *)func, flags);
1757 /* what kind of hostname were we given? */
1765 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1767 tls_session *session = s;
1769 const gnutls_datum_t *peer_cert_list;
1772 char altname[NI_MAXHOST];
1775 gnutls_x509_crt_t cert;
1779 char *domain = NULL;
1780 #ifdef LDAP_PF_INET6
1781 struct in6_addr addr;
1783 struct in_addr addr;
1785 int n, len1 = 0, len2 = 0;
1787 time_t now = time(0);
1789 if( ldap_int_hostname &&
1790 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1792 name = ldap_int_hostname;
1797 peer_cert_list = gnutls_certificate_get_peers( session->session,
1799 if ( !peer_cert_list ) {
1800 Debug( LDAP_DEBUG_ANY,
1801 "TLS: unable to get peer certificate.\n",
1803 /* If this was a fatal condition, things would have
1804 * aborted long before now.
1806 return LDAP_SUCCESS;
1808 ret = gnutls_x509_crt_init( &cert );
1810 return LDAP_LOCAL_ERROR;
1811 ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1813 gnutls_x509_crt_deinit( cert );
1814 return LDAP_LOCAL_ERROR;
1817 #ifdef LDAP_PF_INET6
1818 if (name[0] == '[' && strchr(name, ']')) {
1819 char *n2 = ldap_strdup(name+1);
1820 *strchr(n2, ']') = 2;
1821 if (inet_pton(AF_INET6, n2, &addr))
1826 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1827 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1830 if (ntype == IS_DNS) {
1831 len1 = strlen(name);
1832 domain = strchr(name, '.');
1834 len2 = len1 - (domain-name);
1838 for ( i=0, ret=0; ret >= 0; i++ ) {
1839 altnamesize = sizeof(altname);
1840 ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1841 altname, &altnamesize, NULL );
1842 if ( ret < 0 ) break;
1845 if ( altnamesize == 0 ) continue;
1847 if ( ret == GNUTLS_SAN_DNSNAME ) {
1848 if (ntype != IS_DNS) continue;
1850 /* Is this an exact match? */
1851 if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1855 /* Is this a wildcard match? */
1856 if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1857 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1861 } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1862 if (ntype == IS_DNS) continue;
1864 #ifdef LDAP_PF_INET6
1865 if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1869 if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1872 if (!memcmp(altname, &addr, altnamesize)) {
1880 altnamesize = sizeof(altname);
1881 ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1882 0, 0, altname, &altnamesize );
1884 Debug( LDAP_DEBUG_ANY,
1885 "TLS: unable to get common name from peer certificate.\n",
1887 ret = LDAP_CONNECT_ERROR;
1888 if ( ld->ld_error ) {
1889 LDAP_FREE( ld->ld_error );
1891 ld->ld_error = LDAP_STRDUP(
1892 _("TLS: unable to get CN from peer certificate"));
1895 ret = LDAP_LOCAL_ERROR;
1896 if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1899 } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1900 /* Is this a wildcard match? */
1902 (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1908 if( ret == LDAP_LOCAL_ERROR ) {
1909 altname[altnamesize] = '\0';
1910 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1911 "common name in certificate (%s).\n",
1913 ret = LDAP_CONNECT_ERROR;
1914 if ( ld->ld_error ) {
1915 LDAP_FREE( ld->ld_error );
1917 ld->ld_error = LDAP_STRDUP(
1918 _("TLS: hostname does not match CN in peer certificate"));
1921 gnutls_x509_crt_deinit( cert );
1925 #else /* !HAVE_GNUTLS */
1928 ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1930 int i, ret = LDAP_LOCAL_ERROR;
1935 #ifdef LDAP_PF_INET6
1936 struct in6_addr addr;
1938 struct in_addr addr;
1941 if( ldap_int_hostname &&
1942 ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1944 name = ldap_int_hostname;
1949 x = tls_get_cert((SSL *)s);
1951 Debug( LDAP_DEBUG_ANY,
1952 "TLS: unable to get peer certificate.\n",
1954 /* If this was a fatal condition, things would have
1955 * aborted long before now.
1957 return LDAP_SUCCESS;
1960 #ifdef LDAP_PF_INET6
1961 if (name[0] == '[' && strchr(name, ']')) {
1962 char *n2 = ldap_strdup(name+1);
1963 *strchr(n2, ']') = 2;
1964 if (inet_pton(AF_INET6, n2, &addr))
1969 if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1970 if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1973 i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1976 STACK_OF(GENERAL_NAME) *alt;
1978 ex = X509_get_ext(x, i);
1979 alt = X509V3_EXT_d2i(ex);
1981 int n, len1 = 0, len2 = 0;
1982 char *domain = NULL;
1985 if (ntype == IS_DNS) {
1986 len1 = strlen(name);
1987 domain = strchr(name, '.');
1989 len2 = len1 - (domain-name);
1992 n = sk_GENERAL_NAME_num(alt);
1993 for (i=0; i<n; i++) {
1996 gn = sk_GENERAL_NAME_value(alt, i);
1997 if (gn->type == GEN_DNS) {
1998 if (ntype != IS_DNS) continue;
2000 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2001 sl = ASN1_STRING_length(gn->d.ia5);
2004 if (sl == 0) continue;
2006 /* Is this an exact match? */
2007 if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
2011 /* Is this a wildcard match? */
2012 if (domain && (sn[0] == '*') && (sn[1] == '.') &&
2013 (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2018 } else if (gn->type == GEN_IPADD) {
2019 if (ntype == IS_DNS) continue;
2021 sn = (char *) ASN1_STRING_data(gn->d.ia5);
2022 sl = ASN1_STRING_length(gn->d.ia5);
2024 #ifdef LDAP_PF_INET6
2025 if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2029 if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2032 if (!memcmp(sn, &addr, sl)) {
2038 GENERAL_NAMES_free(alt);
2039 if (i < n) { /* Found a match */
2045 if (ret != LDAP_SUCCESS) {
2050 xn = X509_get_subject_name(x);
2051 if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2052 buf, sizeof(buf)) == -1)
2054 Debug( LDAP_DEBUG_ANY,
2055 "TLS: unable to get common name from peer certificate.\n",
2057 ret = LDAP_CONNECT_ERROR;
2058 if ( ld->ld_error ) {
2059 LDAP_FREE( ld->ld_error );
2061 ld->ld_error = LDAP_STRDUP(
2062 _("TLS: unable to get CN from peer certificate"));
2064 } else if (strcasecmp(name, buf) == 0 ) {
2067 } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2068 char *domain = strchr(name, '.');
2074 dlen = sl - (domain-name);
2077 /* Is this a wildcard match? */
2078 if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2084 if( ret == LDAP_LOCAL_ERROR ) {
2085 Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2086 "common name in certificate (%s).\n",
2088 ret = LDAP_CONNECT_ERROR;
2089 if ( ld->ld_error ) {
2090 LDAP_FREE( ld->ld_error );
2092 ld->ld_error = LDAP_STRDUP(
2093 _("TLS: hostname does not match CN in peer certificate"));
2102 ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2107 case LDAP_OPT_X_TLS_CACERTFILE:
2108 case LDAP_OPT_X_TLS_CACERTDIR:
2109 case LDAP_OPT_X_TLS_CERTFILE:
2110 case LDAP_OPT_X_TLS_KEYFILE:
2111 case LDAP_OPT_X_TLS_RANDOM_FILE:
2112 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2113 case LDAP_OPT_X_TLS_DHFILE:
2115 case LDAP_OPT_X_TLS_CRLFILE:
2117 return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2119 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2120 case LDAP_OPT_X_TLS:
2122 if ( strcasecmp( arg, "never" ) == 0 ) {
2123 i = LDAP_OPT_X_TLS_NEVER ;
2125 } else if ( strcasecmp( arg, "demand" ) == 0 ) {
2126 i = LDAP_OPT_X_TLS_DEMAND ;
2128 } else if ( strcasecmp( arg, "allow" ) == 0 ) {
2129 i = LDAP_OPT_X_TLS_ALLOW ;
2131 } else if ( strcasecmp( arg, "try" ) == 0 ) {
2132 i = LDAP_OPT_X_TLS_TRY ;
2134 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2135 ( strcasecmp( arg, "on" ) == 0 ) ||
2136 ( strcasecmp( arg, "yes" ) == 0) ||
2137 ( strcasecmp( arg, "true" ) == 0 ) )
2139 i = LDAP_OPT_X_TLS_HARD ;
2143 return ldap_pvt_tls_set_option( ld, option, &i );
2146 #ifdef HAVE_OPENSSL_CRL
2147 case LDAP_OPT_X_TLS_CRLCHECK:
2149 if ( strcasecmp( arg, "none" ) == 0 ) {
2150 i = LDAP_OPT_X_TLS_CRL_NONE ;
2151 } else if ( strcasecmp( arg, "peer" ) == 0 ) {
2152 i = LDAP_OPT_X_TLS_CRL_PEER ;
2153 } else if ( strcasecmp( arg, "all" ) == 0 ) {
2154 i = LDAP_OPT_X_TLS_CRL_ALL ;
2157 return ldap_pvt_tls_set_option( ld, option, &i );
2166 ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2168 struct ldapoptions *lo;
2171 assert( LDAP_VALID( ld ) );
2173 if( !LDAP_VALID( ld ) ) {
2174 return LDAP_OPT_ERROR;
2177 lo = &ld->ld_options;
2180 /* Get pointer to global option structure */
2181 lo = LDAP_INT_GLOBAL_OPT();
2183 return LDAP_NO_MEMORY;
2188 case LDAP_OPT_X_TLS:
2189 *(int *)arg = lo->ldo_tls_mode;
2191 case LDAP_OPT_X_TLS_CTX:
2192 *(void **)arg = lo->ldo_tls_ctx;
2193 if ( lo->ldo_tls_ctx ) {
2194 tls_ctx_ref( lo->ldo_tls_ctx );
2197 case LDAP_OPT_X_TLS_CACERTFILE:
2198 *(char **)arg = lo->ldo_tls_cacertfile ?
2199 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2201 case LDAP_OPT_X_TLS_CACERTDIR:
2202 *(char **)arg = lo->ldo_tls_cacertdir ?
2203 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2205 case LDAP_OPT_X_TLS_CERTFILE:
2206 *(char **)arg = lo->ldo_tls_certfile ?
2207 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2209 case LDAP_OPT_X_TLS_KEYFILE:
2210 *(char **)arg = lo->ldo_tls_keyfile ?
2211 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2213 case LDAP_OPT_X_TLS_DHFILE:
2214 *(char **)arg = lo->ldo_tls_dhfile ?
2215 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2218 case LDAP_OPT_X_TLS_CRLFILE:
2219 *(char **)arg = lo->ldo_tls_crlfile ?
2220 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2223 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2224 *(int *)arg = lo->ldo_tls_require_cert;
2226 #ifdef HAVE_OPENSSL_CRL
2227 case LDAP_OPT_X_TLS_CRLCHECK:
2228 *(int *)arg = lo->ldo_tls_crlcheck;
2231 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2232 *(char **)arg = lo->ldo_tls_ciphersuite ?
2233 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2235 case LDAP_OPT_X_TLS_RANDOM_FILE:
2237 *(char **)arg = tls_opt_randfile ?
2238 LDAP_STRDUP( tls_opt_randfile ) : NULL;
2240 *(char **)arg = NULL;
2243 case LDAP_OPT_X_TLS_SSL_CTX: {
2246 LDAPConn *conn = ld->ld_defconn;
2247 if ( conn != NULL ) {
2248 Sockbuf *sb = conn->lconn_sb;
2249 retval = ldap_pvt_tls_sb_ctx( sb );
2252 *(void **)arg = retval;
2255 case LDAP_OPT_X_TLS_CONNECT_CB:
2256 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2258 case LDAP_OPT_X_TLS_CONNECT_ARG:
2259 *(void **)arg = lo->ldo_tls_connect_arg;
2268 ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2270 struct ldapoptions *lo;
2273 assert( LDAP_VALID( ld ) );
2275 if( !LDAP_VALID( ld ) ) {
2276 return LDAP_OPT_ERROR;
2279 lo = &ld->ld_options;
2282 /* Get pointer to global option structure */
2283 lo = LDAP_INT_GLOBAL_OPT();
2285 return LDAP_NO_MEMORY;
2290 case LDAP_OPT_X_TLS:
2291 if ( !arg ) return -1;
2293 switch( *(int *) arg ) {
2294 case LDAP_OPT_X_TLS_NEVER:
2295 case LDAP_OPT_X_TLS_DEMAND:
2296 case LDAP_OPT_X_TLS_ALLOW:
2297 case LDAP_OPT_X_TLS_TRY:
2298 case LDAP_OPT_X_TLS_HARD:
2300 lo->ldo_tls_mode = *(int *)arg;
2307 case LDAP_OPT_X_TLS_CTX:
2308 if ( lo->ldo_tls_ctx )
2309 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2310 lo->ldo_tls_ctx = arg;
2311 tls_ctx_ref( lo->ldo_tls_ctx );
2313 case LDAP_OPT_X_TLS_CONNECT_CB:
2314 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2316 case LDAP_OPT_X_TLS_CONNECT_ARG:
2317 lo->ldo_tls_connect_arg = arg;
2319 case LDAP_OPT_X_TLS_CACERTFILE:
2320 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2321 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2323 case LDAP_OPT_X_TLS_CACERTDIR:
2324 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2325 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2327 case LDAP_OPT_X_TLS_CERTFILE:
2328 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2329 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2331 case LDAP_OPT_X_TLS_KEYFILE:
2332 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2333 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2335 case LDAP_OPT_X_TLS_DHFILE:
2336 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2337 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2340 case LDAP_OPT_X_TLS_CRLFILE:
2341 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2342 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2345 case LDAP_OPT_X_TLS_REQUIRE_CERT:
2346 if ( !arg ) return -1;
2347 switch( *(int *) arg ) {
2348 case LDAP_OPT_X_TLS_NEVER:
2349 case LDAP_OPT_X_TLS_DEMAND:
2350 case LDAP_OPT_X_TLS_ALLOW:
2351 case LDAP_OPT_X_TLS_TRY:
2352 case LDAP_OPT_X_TLS_HARD:
2353 lo->ldo_tls_require_cert = * (int *) arg;
2357 #ifdef HAVE_OPENSSL_CRL
2358 case LDAP_OPT_X_TLS_CRLCHECK:
2359 if ( !arg ) return -1;
2360 switch( *(int *) arg ) {
2361 case LDAP_OPT_X_TLS_CRL_NONE:
2362 case LDAP_OPT_X_TLS_CRL_PEER:
2363 case LDAP_OPT_X_TLS_CRL_ALL:
2364 lo->ldo_tls_crlcheck = * (int *) arg;
2369 case LDAP_OPT_X_TLS_CIPHER_SUITE:
2370 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2371 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2374 case LDAP_OPT_X_TLS_RANDOM_FILE:
2378 if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2379 tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2383 case LDAP_OPT_X_TLS_NEWCTX:
2384 if ( !arg ) return -1;
2385 if ( lo->ldo_tls_ctx )
2386 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2387 lo->ldo_tls_ctx = NULL;
2388 return ldap_int_tls_init_ctx( lo, *(int *)arg );
2396 ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2398 Sockbuf *sb = conn->lconn_sb;
2403 host = srv->lud_host;
2405 host = conn->lconn_server->lud_host;
2408 /* avoid NULL host */
2409 if( host == NULL ) {
2413 (void) ldap_pvt_tls_init();
2416 * Fortunately, the lib uses blocking io...
2418 if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2419 ld->ld_errno = LDAP_CONNECT_ERROR;
2420 return (ld->ld_errno);
2423 ssl = ldap_pvt_tls_sb_ctx( sb );
2424 assert( ssl != NULL );
2427 * compare host with name(s) in certificate
2429 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2430 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2431 if (ld->ld_errno != LDAP_SUCCESS) {
2432 return ld->ld_errno;
2436 return LDAP_SUCCESS;
2440 /* Derived from openssl/apps/s_cb.c */
2442 tls_info_cb( const SSL *ssl, int where, int ret )
2446 char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2448 w = where & ~SSL_ST_MASK;
2449 if ( w & SSL_ST_CONNECT ) {
2451 } else if ( w & SSL_ST_ACCEPT ) {
2459 state = LDAP_STRDUP( state );
2463 if ( where & SSL_CB_LOOP ) {
2464 Debug( LDAP_DEBUG_TRACE,
2465 "TLS trace: %s:%s\n",
2468 } else if ( where & SSL_CB_ALERT ) {
2469 char *atype = (char *) SSL_alert_type_string_long( ret );
2470 char *adesc = (char *) SSL_alert_desc_string_long( ret );
2471 op = ( where & SSL_CB_READ ) ? "read" : "write";
2474 atype = LDAP_STRDUP( atype );
2478 adesc = LDAP_STRDUP( adesc );
2482 Debug( LDAP_DEBUG_TRACE,
2483 "TLS trace: SSL3 alert %s:%s:%s\n",
2486 if ( atype ) LDAP_FREE( atype );
2487 if ( adesc ) LDAP_FREE( adesc );
2489 } else if ( where & SSL_CB_EXIT ) {
2491 Debug( LDAP_DEBUG_TRACE,
2492 "TLS trace: %s:failed in %s\n",
2494 } else if ( ret < 0 ) {
2495 Debug( LDAP_DEBUG_TRACE,
2496 "TLS trace: %s:error in %s\n",
2501 if ( state ) LDAP_FREE( state );
2506 tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2515 char *certerr = NULL;
2517 cert = X509_STORE_CTX_get_current_cert( ctx );
2518 errnum = X509_STORE_CTX_get_error( ctx );
2519 errdepth = X509_STORE_CTX_get_error_depth( ctx );
2522 * X509_get_*_name return pointers to the internal copies of
2523 * those things requested. So do not free them.
2525 subject = X509_get_subject_name( cert );
2526 issuer = X509_get_issuer_name( cert );
2527 /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2528 sname = X509_NAME_oneline( subject, NULL, 0 );
2529 iname = X509_NAME_oneline( issuer, NULL, 0 );
2530 if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2532 if ( sname ) __etoa( sname );
2533 if ( iname ) __etoa( iname );
2535 certerr = LDAP_STRDUP( certerr );
2539 Debug( LDAP_DEBUG_TRACE,
2540 "TLS certificate verification: depth: %d, err: %d, subject: %s,",
2542 sname ? sname : "-unknown-" );
2543 Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2545 Debug( LDAP_DEBUG_ANY,
2546 "TLS certificate verification: Error, %s\n",
2550 CRYPTO_free ( sname );
2552 CRYPTO_free ( iname );
2554 if ( certerr ) LDAP_FREE( certerr );
2560 tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2562 (void) tls_verify_cb( ok, ctx );
2566 /* Inspired by ERR_print_errors in OpenSSL */
2568 tls_report_error( void )
2575 while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2576 ERR_error_string_n( l, buf, sizeof( buf ) );
2579 file = LDAP_STRDUP( file );
2580 __etoa( (char *)file );
2584 Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2587 if ( file ) LDAP_FREE( (void *)file );
2593 tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2597 /* FIXME: Pregenerate the key on startup */
2598 /* FIXME: Who frees the key? */
2599 tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2602 Debug( LDAP_DEBUG_ANY,
2603 "TLS: Failed to generate temporary %d-bit %s RSA key\n",
2604 key_length, is_export ? "export" : "domestic", 0 );
2611 tls_seed_PRNG( const char *randfile )
2613 #ifndef URANDOM_DEVICE
2614 /* no /dev/urandom (or equiv) */
2616 char buffer[MAXPATHLEN];
2618 if (randfile == NULL) {
2619 /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2620 * If $HOME is not set or buffer too small to hold the pathname,
2621 * an error occurs. - From RAND_file_name() man page.
2622 * The fact is that when $HOME is NULL, .rnd is used.
2624 randfile = RAND_file_name( buffer, sizeof( buffer ) );
2626 } else if (RAND_egd(randfile) > 0) {
2631 if (randfile == NULL) {
2632 Debug( LDAP_DEBUG_ANY,
2633 "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2638 total = RAND_load_file(randfile, -1);
2640 if (RAND_status() == 0) {
2641 Debug( LDAP_DEBUG_ANY,
2642 "TLS: PRNG not been seeded with enough data\n",
2647 /* assume if there was enough bits to seed that it's okay
2648 * to write derived bits to the file
2650 RAND_write_file(randfile);
2664 /* From the OpenSSL 0.9.7 distro */
2665 static const char dhpem512[] =
2666 "-----BEGIN DH PARAMETERS-----\n\
2667 MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2668 a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2669 -----END DH PARAMETERS-----\n";
2671 static const char dhpem1024[] =
2672 "-----BEGIN DH PARAMETERS-----\n\
2673 MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2674 /Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2675 /mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2676 -----END DH PARAMETERS-----\n";
2678 static const char dhpem2048[] =
2679 "-----BEGIN DH PARAMETERS-----\n\
2680 MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2681 AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2682 z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2683 pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2684 aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2685 Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2686 -----END DH PARAMETERS-----\n";
2688 static const char dhpem4096[] =
2689 "-----BEGIN DH PARAMETERS-----\n\
2690 MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2691 vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2692 TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2693 bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2694 rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2695 EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2696 bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2697 W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2698 ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2699 NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2700 jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2701 -----END DH PARAMETERS-----\n";
2703 static const struct dhinfo dhpem[] = {
2704 { 512, dhpem512, sizeof(dhpem512) },
2705 { 1024, dhpem1024, sizeof(dhpem1024) },
2706 { 2048, dhpem2048, sizeof(dhpem2048) },
2707 { 4096, dhpem4096, sizeof(dhpem4096) },
2712 tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2714 struct dhplist *p = NULL;
2719 /* Do we have params of this length already? */
2720 #ifdef LDAP_R_COMPILE
2721 ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2723 for ( p = dhparams; p; p=p->next ) {
2724 if ( p->keylength == key_length ) {
2725 #ifdef LDAP_R_COMPILE
2726 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2732 /* No - check for hardcoded params */
2734 for (i=0; dhpem[i].keylength; i++) {
2735 if ( dhpem[i].keylength == key_length ) {
2736 b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2742 dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2746 /* Generating on the fly is expensive/slow... */
2748 dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2751 p = LDAP_MALLOC( sizeof(struct dhplist) );
2753 p->keylength = key_length;
2760 #ifdef LDAP_R_COMPILE
2761 ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2767 #endif /* HAVE_OPENSSL */
2770 ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2775 if (HAS_TLS( sb )) {
2776 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2785 ldap_pvt_tls_get_strength( void *s )
2790 c = SSL_get_current_cipher((SSL *)s);
2791 return SSL_CIPHER_get_bits(c, NULL);
2792 #elif defined(HAVE_GNUTLS)
2793 tls_session *session = s;
2794 gnutls_cipher_algorithm_t c;
2796 c = gnutls_cipher_get( session->session );
2797 return gnutls_cipher_get_key_size( c );
2805 ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2808 struct berval der_dn;
2814 x = SSL_get_certificate((SSL *)s);
2816 if (!x) return LDAP_INVALID_CREDENTIALS;
2818 xn = X509_get_subject_name(x);
2819 der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2820 der_dn.bv_val = xn->bytes->data;
2821 #elif defined(HAVE_GNUTLS)
2822 tls_session *session = s;
2823 const gnutls_datum_t *x;
2826 x = gnutls_certificate_get_ours( session->session );
2828 if (!x) return LDAP_INVALID_CREDENTIALS;
2830 bv.bv_val = x->data;
2831 bv.bv_len = x->size;
2833 x509_cert_get_dn( &bv, &der_dn, 1 );
2835 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2837 #else /* !HAVE_TLS */
2838 return LDAP_NOT_SUPPORTED;
2843 ldap_start_tls( LDAP *ld,
2844 LDAPControl **serverctrls,
2845 LDAPControl **clientctrls,
2848 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2849 NULL, serverctrls, clientctrls, msgidp );
2853 ldap_install_tls( LDAP *ld )
2856 return LDAP_NOT_SUPPORTED;
2858 if ( ldap_tls_inplace( ld ) ) {
2859 return LDAP_LOCAL_ERROR;
2862 return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2867 ldap_start_tls_s ( LDAP *ld,
2868 LDAPControl **serverctrls,
2869 LDAPControl **clientctrls )
2872 return LDAP_NOT_SUPPORTED;
2875 char *rspoid = NULL;
2876 struct berval *rspdata = NULL;
2878 /* XXYYZ: this initiates operation only on default connection! */
2880 if ( ldap_tls_inplace( ld ) ) {
2881 return LDAP_LOCAL_ERROR;
2884 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2885 NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2887 if ( rspoid != NULL ) {
2891 if ( rspdata != NULL ) {
2892 ber_bvfree( rspdata );
2895 if ( rc == LDAP_SUCCESS ) {
2896 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2903 /* These tags probably all belong in lber.h, but they're
2904 * not normally encountered when processing LDAP, so maybe
2905 * they belong somewhere else instead.
2908 #define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2910 /* Tags for string types used in a DirectoryString.
2912 * Note that IA5string is not one of the defined choices for
2913 * DirectoryString in X.520, but it gets used for email AVAs.
2915 #define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2916 #define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2917 #define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2918 #define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2919 #define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2920 #define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2923 find_oid( struct berval *oid )
2927 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2928 if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2929 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2935 /* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2936 * x509_name must be raw DER. If func is non-NULL, the
2937 * constructed DN will use numeric OIDs to identify attributeTypes,
2938 * and the func() will be invoked to rewrite the DN with the given
2941 * Otherwise the DN will use shortNames from a hardcoded table.
2944 ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2949 LDAPAVA *newAVA, *baseAVA;
2950 BerElementBuffer berbuf;
2951 BerElement *ber = (BerElement *)&berbuf;
2952 char oids[8192], *oidptr = oids, *oidbuf = NULL;
2954 char *dn_end, *rdn_end;
2955 int i, navas, nrdns, rc = LDAP_SUCCESS;
2956 size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2962 struct berval Oid, Val, oid2, *in = x509_name;
2964 assert( bv != NULL );
2972 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2973 * An AVA is a SEQUENCE of attr and value.
2974 * Count the number of AVAs and RDNs
2976 ber_init2( ber, in, LBER_USE_DER );
2977 tag = ber_peek_tag( ber, &len );
2978 if ( tag != LBER_SEQUENCE )
2979 return LDAP_DECODING_ERROR;
2981 for ( tag = ber_first_element( ber, &len, &dn_end );
2983 tag = ber_next_element( ber, &len, dn_end )) {
2985 for ( tag = ber_first_element( ber, &len, &rdn_end );
2986 tag == LBER_SEQUENCE;
2987 tag = ber_next_element( ber, &len, rdn_end )) {
2988 tag = ber_skip_tag( ber, &len );
2989 ber_skip_data( ber, len );
2994 /* Allocate the DN/RDN/AVA stuff as a single block */
2995 dnsize = sizeof(LDAPRDN) * (nrdns+1);
2996 dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
2997 dnsize += sizeof(LDAPAVA) * navas;
2998 if (dnsize > sizeof(ptrs)) {
2999 newDN = (LDAPDN)LDAP_MALLOC( dnsize );
3000 if ( newDN == NULL )
3001 return LDAP_NO_MEMORY;
3003 newDN = (LDAPDN)(char *)ptrs;
3006 newDN[nrdns] = NULL;
3007 newRDN = (LDAPRDN)(newDN + nrdns+1);
3008 newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
3011 /* Rewind and start extracting */
3014 tag = ber_first_element( ber, &len, &dn_end );
3015 for ( i = nrdns - 1; i >= 0; i-- ) {
3018 for ( tag = ber_first_element( ber, &len, &rdn_end );
3019 tag == LBER_SEQUENCE;
3020 tag = ber_next_element( ber, &len, rdn_end )) {
3023 tag = ber_skip_tag( ber, &len );
3024 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
3025 if ( tag != LBER_TAG_OID ) {
3026 rc = LDAP_DECODING_ERROR;
3030 oid2.bv_val = oidptr;
3031 oid2.bv_len = oidrem;
3032 if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) {
3033 rc = LDAP_DECODING_ERROR;
3036 oidname = find_oid( &oid2 );
3038 newAVA->la_attr = oid2;
3039 oidptr += oid2.bv_len + 1;
3040 oidrem -= oid2.bv_len + 1;
3042 /* Running out of OID buffer space? */
3044 if ( oidsize == 0 ) {
3045 oidsize = sizeof(oids) * 2;
3047 oidbuf = LDAP_MALLOC( oidsize );
3048 if ( oidbuf == NULL ) goto nomem;
3052 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3053 if ( oidbuf == NULL ) goto nomem;
3054 /* Buffer moved! Fix AVA pointers */
3055 if ( old != oidbuf ) {
3057 long dif = oidbuf - old;
3059 for (a=baseAVA; a<=newAVA; a++){
3060 if (a->la_attr.bv_val >= old &&
3061 a->la_attr.bv_val <= (old + oidsize))
3062 a->la_attr.bv_val += dif;
3065 oidptr = oidbuf + oidsize - oidrem;
3072 newAVA->la_attr = oidname->oid;
3074 newAVA->la_attr = oidname->name;
3077 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
3079 case LBER_TAG_UNIVERSAL:
3080 /* This uses 32-bit ISO 10646-1 */
3081 csize = 4; goto to_utf8;
3083 /* This uses 16-bit ISO 10646-1 */
3084 csize = 2; goto to_utf8;
3085 case LBER_TAG_TELETEX:
3086 /* This uses 8-bit, assume ISO 8859-1 */
3088 to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3089 newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3090 if (rc != LDAP_SUCCESS) goto nomem;
3091 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3094 newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3095 /* This is already in UTF-8 encoding */
3097 case LBER_TAG_PRINTABLE:
3098 /* These are always 7-bit strings */
3099 newAVA->la_value = Val;
3103 newAVA->la_private = NULL;
3104 newAVA->la_flags = LDAP_AVA_STRING;
3108 tag = ber_next_element( ber, &len, dn_end );
3112 rc = func( newDN, flags, NULL );
3113 if ( rc != LDAP_SUCCESS )
3117 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3120 for (;baseAVA < newAVA; baseAVA++) {
3121 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3122 LDAP_FREE( baseAVA->la_attr.bv_val );
3123 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3124 LDAP_FREE( baseAVA->la_value.bv_val );
3128 LDAP_FREE( oidbuf );
3129 if ( newDN != (LDAPDN)(char *) ptrs )