1
/* tls.c - Handle tls/ssl using SSLeay, OpenSSL or GNUTLS. */
2
/* $OpenLDAP: pkg/ldap/libraries/libldap/tls.c,v 1.133.2.11 2008/07/09 23:56:44 quanah Exp $ */
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;
761
gnutls_dh_params_init (&((tls_ctx*)
762
lo->ldo_tls_ctx)->dh_params);
763
gnutls_dh_params_generate2 (((tls_ctx*)
764
lo->ldo_tls_ctx)->dh_params,
768
#else /* !HAVE_GNUTLS */
771
SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
772
(const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
775
if ( lo->ldo_tls_ciphersuite &&
776
!SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
778
Debug( LDAP_DEBUG_ANY,
779
"TLS: could not set cipher list %s.\n",
780
lo->ldo_tls_ciphersuite, 0, 0 );
786
if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
787
if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
788
cacertfile, cacertdir ) ||
789
!SSL_CTX_set_default_verify_paths( lo->ldo_tls_ctx ) )
791
Debug( LDAP_DEBUG_ANY, "TLS: "
792
"could not load verify locations (file:`%s',dir:`%s').\n",
793
lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
794
lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
802
STACK_OF(X509_NAME) *calist;
803
/* List of CA names to send to a client */
804
calist = get_ca_list( cacertfile, cacertdir );
806
Debug( LDAP_DEBUG_ANY, "TLS: "
807
"could not load client CA list (file:`%s',dir:`%s').\n",
808
lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
809
lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
816
SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
820
if ( lo->ldo_tls_certfile &&
821
!SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
822
certfile, SSL_FILETYPE_PEM ) )
824
Debug( LDAP_DEBUG_ANY,
825
"TLS: could not use certificate `%s'.\n",
826
lo->ldo_tls_certfile,0,0);
832
/* Key validity is checked automatically if cert has already been set */
833
if ( lo->ldo_tls_keyfile &&
834
!SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
835
keyfile, SSL_FILETYPE_PEM ) )
837
Debug( LDAP_DEBUG_ANY,
838
"TLS: could not use key file `%s'.\n",
839
lo->ldo_tls_keyfile,0,0);
845
if ( lo->ldo_tls_dhfile ) {
850
if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
851
Debug( LDAP_DEBUG_ANY,
852
"TLS: could not use DH parameters file `%s'.\n",
853
lo->ldo_tls_dhfile,0,0);
858
while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
859
p = LDAP_MALLOC( sizeof(dhplist) );
861
p->keylength = DH_size( dh ) * 8;
870
if ( tls_opt_trace ) {
871
SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_info_cb );
875
if ( lo->ldo_tls_require_cert ) {
877
if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
878
lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
879
i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
883
SSL_CTX_set_verify( lo->ldo_tls_ctx, i,
884
lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
885
tls_verify_ok : tls_verify_cb );
886
SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
887
if ( lo->ldo_tls_dhfile ) {
888
SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
890
#ifdef HAVE_OPENSSL_CRL
891
if ( lo->ldo_tls_crlcheck ) {
892
X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_ctx );
893
if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
894
X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
895
} else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
896
X509_STORE_set_flags( x509_s,
897
X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
902
#endif /* HAVE_GNUTLS */
905
if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
906
ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
907
lo->ldo_tls_ctx = NULL;
910
LDAP_FREE( ciphersuite );
911
LDAP_FREE( cacertfile );
912
LDAP_FREE( certfile );
913
LDAP_FREE( keyfile );
915
LDAP_FREE( crlfile );
917
LDAP_FREE( cacertdir );
925
* initialize the default context
928
ldap_pvt_tls_init_def_ctx( int is_server )
930
struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
932
#ifdef LDAP_R_COMPILE
933
ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
935
rc = ldap_int_tls_init_ctx( lo, is_server );
936
#ifdef LDAP_R_COMPILE
937
ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
943
alloc_handle( void *ctx_arg, int is_server )
951
struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
952
if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
953
ctx = lo->ldo_tls_ctx;
956
ssl = tls_session_new( ctx, is_server );
958
Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
965
update_flags( Sockbuf *sb, tls_session * ssl, int rc )
967
sb->sb_trans_needs_read = 0;
968
sb->sb_trans_needs_write = 0;
971
if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
974
switch (gnutls_record_get_direction (ssl->session)) {
976
sb->sb_trans_needs_read = 1;
979
sb->sb_trans_needs_write = 1;
982
#else /* !HAVE_GNUTLS */
983
rc = SSL_get_error(ssl, rc);
984
if (rc == SSL_ERROR_WANT_READ) {
985
sb->sb_trans_needs_read = 1;
988
} else if (rc == SSL_ERROR_WANT_WRITE) {
989
sb->sb_trans_needs_write = 1;
992
} else if (rc == SSL_ERROR_WANT_CONNECT) {
995
#endif /* HAVE_GNUTLS */
1000
* TLS support for LBER Sockbufs
1005
Sockbuf_IO_Desc *sbiod;
1011
sb_gtls_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
1015
if ( buf == NULL || len <= 0 ) return 0;
1017
p = (struct tls_data *)ptr;
1019
if ( p == NULL || p->sbiod == NULL ) {
1023
return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1027
sb_gtls_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
1031
if ( buf == NULL || len <= 0 ) return 0;
1033
p = (struct tls_data *)ptr;
1035
if ( p == NULL || p->sbiod == NULL ) {
1039
return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1043
sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1046
tls_session *session = arg;
1048
assert( sbiod != NULL );
1050
p = LBER_MALLOC( sizeof( *p ) );
1055
gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
1056
gnutls_transport_set_pull_function( session->session, sb_gtls_recv );
1057
gnutls_transport_set_push_function( session->session, sb_gtls_send );
1060
sbiod->sbiod_pvt = p;
1065
sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1069
assert( sbiod != NULL );
1070
assert( sbiod->sbiod_pvt != NULL );
1072
p = (struct tls_data *)sbiod->sbiod_pvt;
1073
gnutls_deinit ( p->ssl->session );
1074
LBER_FREE( p->ssl );
1075
LBER_FREE( sbiod->sbiod_pvt );
1076
sbiod->sbiod_pvt = NULL;
1081
sb_tls_close( Sockbuf_IO_Desc *sbiod )
1085
assert( sbiod != NULL );
1086
assert( sbiod->sbiod_pvt != NULL );
1088
p = (struct tls_data *)sbiod->sbiod_pvt;
1089
gnutls_bye ( p->ssl->session, GNUTLS_SHUT_RDWR );
1094
sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1098
assert( sbiod != NULL );
1099
assert( sbiod->sbiod_pvt != NULL );
1101
p = (struct tls_data *)sbiod->sbiod_pvt;
1103
if ( opt == LBER_SB_OPT_GET_SSL ) {
1104
*((tls_session **)arg) = p->ssl;
1107
} else if ( opt == LBER_SB_OPT_DATA_READY ) {
1108
if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
1113
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1117
sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1123
assert( sbiod != NULL );
1124
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1126
p = (struct tls_data *)sbiod->sbiod_pvt;
1128
ret = gnutls_record_recv ( p->ssl->session, buf, len );
1130
case GNUTLS_E_INTERRUPTED:
1131
case GNUTLS_E_AGAIN:
1132
sbiod->sbiod_sb->sb_trans_needs_read = 1;
1133
sock_errset(EWOULDBLOCK);
1136
case GNUTLS_E_REHANDSHAKE:
1137
for ( ret = gnutls_handshake ( p->ssl->session );
1138
ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
1139
ret = gnutls_handshake ( p->ssl->session ) );
1140
sbiod->sbiod_sb->sb_trans_needs_read = 1;
1144
sbiod->sbiod_sb->sb_trans_needs_read = 0;
1150
sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1156
assert( sbiod != NULL );
1157
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1159
p = (struct tls_data *)sbiod->sbiod_pvt;
1161
ret = gnutls_record_send ( p->ssl->session, (char *)buf, len );
1163
if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
1164
sbiod->sbiod_sb->sb_trans_needs_write = 1;
1165
sock_errset(EWOULDBLOCK);
1168
sbiod->sbiod_sb->sb_trans_needs_write = 0;
1173
#else /* !HAVE_GNUTLS */
1176
sb_tls_bio_create( BIO *b ) {
1185
sb_tls_bio_destroy( BIO *b )
1187
if ( b == NULL ) return 0;
1189
b->ptr = NULL; /* sb_tls_remove() will free it */
1196
sb_tls_bio_read( BIO *b, char *buf, int len )
1201
if ( buf == NULL || len <= 0 ) return 0;
1203
p = (struct tls_data *)b->ptr;
1205
if ( p == NULL || p->sbiod == NULL ) {
1209
ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
1211
BIO_clear_retry_flags( b );
1213
int err = sock_errno();
1214
if ( err == EAGAIN || err == EWOULDBLOCK ) {
1215
BIO_set_retry_read( b );
1223
sb_tls_bio_write( BIO *b, const char *buf, int len )
1228
if ( buf == NULL || len <= 0 ) return 0;
1230
p = (struct tls_data *)b->ptr;
1232
if ( p == NULL || p->sbiod == NULL ) {
1236
ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
1238
BIO_clear_retry_flags( b );
1240
int err = sock_errno();
1241
if ( err == EAGAIN || err == EWOULDBLOCK ) {
1242
BIO_set_retry_write( b );
1250
sb_tls_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
1252
if ( cmd == BIO_CTRL_FLUSH ) {
1253
/* The OpenSSL library needs this */
1260
sb_tls_bio_gets( BIO *b, char *buf, int len )
1266
sb_tls_bio_puts( BIO *b, const char *str )
1268
return sb_tls_bio_write( b, str, strlen( str ) );
1271
static BIO_METHOD sb_tls_bio_method =
1273
( 100 | 0x400 ), /* it's a source/sink BIO */
1285
sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
1290
assert( sbiod != NULL );
1292
p = LBER_MALLOC( sizeof( *p ) );
1297
p->ssl = (SSL *)arg;
1299
bio = BIO_new( &sb_tls_bio_method );
1300
bio->ptr = (void *)p;
1301
SSL_set_bio( p->ssl, bio, bio );
1302
sbiod->sbiod_pvt = p;
1307
sb_tls_remove( Sockbuf_IO_Desc *sbiod )
1311
assert( sbiod != NULL );
1312
assert( sbiod->sbiod_pvt != NULL );
1314
p = (struct tls_data *)sbiod->sbiod_pvt;
1316
LBER_FREE( sbiod->sbiod_pvt );
1317
sbiod->sbiod_pvt = NULL;
1322
sb_tls_close( Sockbuf_IO_Desc *sbiod )
1326
assert( sbiod != NULL );
1327
assert( sbiod->sbiod_pvt != NULL );
1329
p = (struct tls_data *)sbiod->sbiod_pvt;
1330
SSL_shutdown( p->ssl );
1335
sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
1339
assert( sbiod != NULL );
1340
assert( sbiod->sbiod_pvt != NULL );
1342
p = (struct tls_data *)sbiod->sbiod_pvt;
1344
if ( opt == LBER_SB_OPT_GET_SSL ) {
1345
*((SSL **)arg) = p->ssl;
1348
} else if ( opt == LBER_SB_OPT_DATA_READY ) {
1349
if( SSL_pending( p->ssl ) > 0 ) {
1354
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
1358
sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1364
assert( sbiod != NULL );
1365
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1367
p = (struct tls_data *)sbiod->sbiod_pvt;
1369
ret = SSL_read( p->ssl, (char *)buf, len );
1371
errno = WSAGetLastError();
1373
err = SSL_get_error( p->ssl, ret );
1374
if (err == SSL_ERROR_WANT_READ ) {
1375
sbiod->sbiod_sb->sb_trans_needs_read = 1;
1376
sock_errset(EWOULDBLOCK);
1379
sbiod->sbiod_sb->sb_trans_needs_read = 0;
1384
sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
1390
assert( sbiod != NULL );
1391
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
1393
p = (struct tls_data *)sbiod->sbiod_pvt;
1395
ret = SSL_write( p->ssl, (char *)buf, len );
1397
errno = WSAGetLastError();
1399
err = SSL_get_error( p->ssl, ret );
1400
if (err == SSL_ERROR_WANT_WRITE ) {
1401
sbiod->sbiod_sb->sb_trans_needs_write = 1;
1402
sock_errset(EWOULDBLOCK);
1405
sbiod->sbiod_sb->sb_trans_needs_write = 0;
1412
static Sockbuf_IO sb_tls_sbio =
1414
sb_tls_setup, /* sbi_setup */
1415
sb_tls_remove, /* sbi_remove */
1416
sb_tls_ctrl, /* sbi_ctrl */
1417
sb_tls_read, /* sbi_read */
1418
sb_tls_write, /* sbi_write */
1419
sb_tls_close /* sbi_close */
1423
/* Certs are not automatically varified during the handshake */
1425
tls_cert_verify( tls_session *ssl )
1427
unsigned int status = 0;
1429
time_t now = time(0);
1431
err = gnutls_certificate_verify_peers2( ssl->session, &status );
1433
Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
1438
Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
1442
if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
1443
Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
1447
if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
1448
Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
1454
#endif /* HAVE_GNUTLS */
1457
* Call this to do a TLS connect on a sockbuf. ctx_arg can be
1458
* a SSL_CTX * or NULL, in which case the default ctx is used.
1462
* 0 - Success. Connection is ready for communication.
1463
* <0 - Error. Can't create a TLS stream.
1464
* >0 - Partial success.
1465
* Do a select (using information from lber_pvt_sb_needs_{read,write}
1470
ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
1472
Sockbuf *sb = conn->lconn_sb;
1476
if ( HAS_TLS( sb ) ) {
1477
ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1480
struct ldapoptions *lo;
1483
ctx = ld->ld_options.ldo_tls_ctx;
1485
ssl = alloc_handle( ctx, 0 );
1487
if ( ssl == NULL ) return -1;
1490
ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1491
LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1493
ber_sockbuf_add_io( sb, &sb_tls_sbio,
1494
LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1496
lo = LDAP_INT_GLOBAL_OPT();
1498
ctx = lo->ldo_tls_ctx;
1499
ld->ld_options.ldo_tls_ctx = ctx;
1502
if ( ld->ld_options.ldo_tls_connect_cb )
1503
ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
1504
ld->ld_options.ldo_tls_connect_arg );
1505
if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
1506
ld->ld_options.ldo_tls_connect_cb )
1507
lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
1510
err = tls_session_connect( ssl );
1513
errno = WSAGetLastError();
1522
if ( update_flags( sb, ssl, err )) {
1527
if ((err = ERR_peek_error()))
1530
if ( ld->ld_error ) {
1531
LDAP_FREE( ld->ld_error );
1534
ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
1538
ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
1542
if ( ld->ld_error ) __etoa(ld->ld_error);
1546
Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
1547
ld->ld_error ? ld->ld_error : "" ,0,0);
1549
ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1550
LBER_SBIOD_LEVEL_TRANSPORT );
1552
ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1553
LBER_SBIOD_LEVEL_TRANSPORT );
1559
if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1560
err = tls_cert_verify( ssl );
1561
if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1570
* Call this to do a TLS accept on a sockbuf.
1571
* Everything else is the same as with tls_connect.
1574
ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
1579
if ( HAS_TLS( sb ) ) {
1580
ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
1583
ssl = alloc_handle( ctx_arg, 1 );
1584
if ( ssl == NULL ) return -1;
1587
ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
1588
LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
1590
ber_sockbuf_add_io( sb, &sb_tls_sbio,
1591
LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
1594
err = tls_session_accept( ssl );
1597
errno = WSAGetLastError();
1606
if ( update_flags( sb, ssl, err )) return 1;
1609
Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
1610
gnutls_strerror( err ),0,0 );
1612
Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
1615
ber_sockbuf_remove_io( sb, &sb_tls_sbio,
1616
LBER_SBIOD_LEVEL_TRANSPORT );
1618
ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
1619
LBER_SBIOD_LEVEL_TRANSPORT );
1625
if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
1626
err = tls_cert_verify( ssl );
1627
if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
1635
ldap_pvt_tls_inplace ( Sockbuf *sb )
1637
return HAS_TLS( sb ) ? 1 : 0;
1641
ldap_tls_inplace( LDAP *ld )
1645
if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
1646
sb = ld->ld_defconn->lconn_sb;
1648
} else if ( ld->ld_sb ) {
1655
return ldap_pvt_tls_inplace( sb );
1660
x509_cert_get_dn( struct berval *cert, struct berval *dn, int get_subject )
1662
BerElementBuffer berbuf;
1663
BerElement *ber = (BerElement *)&berbuf;
1668
ber_init2( ber, cert, LBER_USE_DER );
1669
tag = ber_skip_tag( ber, &len ); /* Sequence */
1670
tag = ber_skip_tag( ber, &len ); /* Sequence */
1671
tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
1672
if ( tag == 0xa0 ) /* Version is optional */
1673
tag = ber_get_int( ber, &i ); /* Int: Version */
1674
tag = ber_get_int( ber, &i ); /* Int: Serial */
1675
tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
1676
ber_skip_data( ber, len );
1677
if ( !get_subject ) {
1678
tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
1680
tag = ber_skip_tag( ber, &len );
1681
ber_skip_data( ber, len );
1682
tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
1683
ber_skip_data( ber, len );
1684
tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
1686
len = ber_ptrlen( ber );
1687
dn->bv_val = cert->bv_val + len;
1688
dn->bv_len = cert->bv_len - len;
1692
tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1694
if ( !session->peer_der_dn.bv_val ) {
1695
const gnutls_datum_t *peer_cert_list;
1699
peer_cert_list = gnutls_certificate_get_peers( session->session,
1701
if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
1703
bv.bv_len = peer_cert_list->size;
1704
bv.bv_val = peer_cert_list->data;
1706
x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
1707
*dnbv = session->peer_der_dn;
1711
#else /* !HAVE_GNUTLS */
1713
tls_get_cert( SSL *s )
1715
/* If peer cert was bad, treat as if no cert was given */
1716
if (SSL_get_verify_result(s)) {
1717
/* If we can send an alert, do so */
1718
if (SSL_version(s) != SSL2_VERSION) {
1719
ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
1723
return SSL_get_peer_certificate(s);
1727
tls_get_cert_dn( tls_session *session, struct berval *dnbv )
1730
X509 *x = tls_get_cert( session );
1733
return LDAP_INVALID_CREDENTIALS;
1735
xn = X509_get_subject_name(x);
1736
dnbv->bv_len = i2d_X509_NAME( xn, NULL );
1737
dnbv->bv_val = xn->bytes->data;
1740
#endif /* HAVE_GNUTLS */
1743
ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
1744
LDAPDN_rewrite_dummy *func, unsigned flags )
1746
tls_session *session = s;
1750
rc = tls_get_cert_dn( session, &bvdn );
1751
if ( rc ) return rc;
1753
rc = ldap_X509dn2bv( &bvdn, dn,
1754
(LDAPDN_rewrite_func *)func, flags);
1758
/* what kind of hostname were we given? */
1766
ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1768
tls_session *session = s;
1770
const gnutls_datum_t *peer_cert_list;
1773
char altname[NI_MAXHOST];
1776
gnutls_x509_crt_t cert;
1780
char *domain = NULL;
1781
#ifdef LDAP_PF_INET6
1782
struct in6_addr addr;
1784
struct in_addr addr;
1786
int n, len1 = 0, len2 = 0;
1788
time_t now = time(0);
1790
if( ldap_int_hostname &&
1791
( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1793
name = ldap_int_hostname;
1798
peer_cert_list = gnutls_certificate_get_peers( session->session,
1800
if ( !peer_cert_list ) {
1801
Debug( LDAP_DEBUG_ANY,
1802
"TLS: unable to get peer certificate.\n",
1804
/* If this was a fatal condition, things would have
1805
* aborted long before now.
1807
return LDAP_SUCCESS;
1809
ret = gnutls_x509_crt_init( &cert );
1811
return LDAP_LOCAL_ERROR;
1812
ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
1814
gnutls_x509_crt_deinit( cert );
1815
return LDAP_LOCAL_ERROR;
1818
#ifdef LDAP_PF_INET6
1819
if (name[0] == '[' && strchr(name, ']')) {
1820
char *n2 = ldap_strdup(name+1);
1821
*strchr(n2, ']') = 2;
1822
if (inet_pton(AF_INET6, n2, &addr))
1827
if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1828
if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1831
if (ntype == IS_DNS) {
1832
len1 = strlen(name);
1833
domain = strchr(name, '.');
1835
len2 = len1 - (domain-name);
1839
for ( i=0, ret=0; ret >= 0; i++ ) {
1840
altnamesize = sizeof(altname);
1841
ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
1842
altname, &altnamesize, NULL );
1843
if ( ret < 0 ) break;
1846
if ( altnamesize == 0 ) continue;
1848
if ( ret == GNUTLS_SAN_DNSNAME ) {
1849
if (ntype != IS_DNS) continue;
1851
/* Is this an exact match? */
1852
if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
1856
/* Is this a wildcard match? */
1857
if (domain && (altname[0] == '*') && (altname[1] == '.') &&
1858
(len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
1862
} else if ( ret == GNUTLS_SAN_IPADDRESS ) {
1863
if (ntype == IS_DNS) continue;
1865
#ifdef LDAP_PF_INET6
1866
if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
1870
if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
1873
if (!memcmp(altname, &addr, altnamesize)) {
1881
altnamesize = sizeof(altname);
1882
ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
1883
0, 0, altname, &altnamesize );
1885
Debug( LDAP_DEBUG_ANY,
1886
"TLS: unable to get common name from peer certificate.\n",
1888
ret = LDAP_CONNECT_ERROR;
1889
if ( ld->ld_error ) {
1890
LDAP_FREE( ld->ld_error );
1892
ld->ld_error = LDAP_STRDUP(
1893
_("TLS: unable to get CN from peer certificate"));
1896
ret = LDAP_LOCAL_ERROR;
1897
if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
1900
} else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
1901
/* Is this a wildcard match? */
1903
(len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
1909
if( ret == LDAP_LOCAL_ERROR ) {
1910
altname[altnamesize] = '\0';
1911
Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
1912
"common name in certificate (%s).\n",
1914
ret = LDAP_CONNECT_ERROR;
1915
if ( ld->ld_error ) {
1916
LDAP_FREE( ld->ld_error );
1918
ld->ld_error = LDAP_STRDUP(
1919
_("TLS: hostname does not match CN in peer certificate"));
1922
gnutls_x509_crt_deinit( cert );
1926
#else /* !HAVE_GNUTLS */
1929
ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
1931
int i, ret = LDAP_LOCAL_ERROR;
1936
#ifdef LDAP_PF_INET6
1937
struct in6_addr addr;
1939
struct in_addr addr;
1942
if( ldap_int_hostname &&
1943
( !name_in || !strcasecmp( name_in, "localhost" ) ) )
1945
name = ldap_int_hostname;
1950
x = tls_get_cert((SSL *)s);
1952
Debug( LDAP_DEBUG_ANY,
1953
"TLS: unable to get peer certificate.\n",
1955
/* If this was a fatal condition, things would have
1956
* aborted long before now.
1958
return LDAP_SUCCESS;
1961
#ifdef LDAP_PF_INET6
1962
if (name[0] == '[' && strchr(name, ']')) {
1963
char *n2 = ldap_strdup(name+1);
1964
*strchr(n2, ']') = 2;
1965
if (inet_pton(AF_INET6, n2, &addr))
1970
if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
1971
if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
1974
i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
1977
STACK_OF(GENERAL_NAME) *alt;
1979
ex = X509_get_ext(x, i);
1980
alt = X509V3_EXT_d2i(ex);
1982
int n, len1 = 0, len2 = 0;
1983
char *domain = NULL;
1986
if (ntype == IS_DNS) {
1987
len1 = strlen(name);
1988
domain = strchr(name, '.');
1990
len2 = len1 - (domain-name);
1993
n = sk_GENERAL_NAME_num(alt);
1994
for (i=0; i<n; i++) {
1997
gn = sk_GENERAL_NAME_value(alt, i);
1998
if (gn->type == GEN_DNS) {
1999
if (ntype != IS_DNS) continue;
2001
sn = (char *) ASN1_STRING_data(gn->d.ia5);
2002
sl = ASN1_STRING_length(gn->d.ia5);
2005
if (sl == 0) continue;
2007
/* Is this an exact match? */
2008
if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
2012
/* Is this a wildcard match? */
2013
if (domain && (sn[0] == '*') && (sn[1] == '.') &&
2014
(len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
2019
} else if (gn->type == GEN_IPADD) {
2020
if (ntype == IS_DNS) continue;
2022
sn = (char *) ASN1_STRING_data(gn->d.ia5);
2023
sl = ASN1_STRING_length(gn->d.ia5);
2025
#ifdef LDAP_PF_INET6
2026
if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
2030
if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
2033
if (!memcmp(sn, &addr, sl)) {
2039
GENERAL_NAMES_free(alt);
2040
if (i < n) { /* Found a match */
2046
if (ret != LDAP_SUCCESS) {
2051
xn = X509_get_subject_name(x);
2052
if( X509_NAME_get_text_by_NID( xn, NID_commonName,
2053
buf, sizeof(buf)) == -1)
2055
Debug( LDAP_DEBUG_ANY,
2056
"TLS: unable to get common name from peer certificate.\n",
2058
ret = LDAP_CONNECT_ERROR;
2059
if ( ld->ld_error ) {
2060
LDAP_FREE( ld->ld_error );
2062
ld->ld_error = LDAP_STRDUP(
2063
_("TLS: unable to get CN from peer certificate"));
2065
} else if (strcasecmp(name, buf) == 0 ) {
2068
} else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
2069
char *domain = strchr(name, '.');
2075
dlen = sl - (domain-name);
2078
/* Is this a wildcard match? */
2079
if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
2085
if( ret == LDAP_LOCAL_ERROR ) {
2086
Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
2087
"common name in certificate (%s).\n",
2089
ret = LDAP_CONNECT_ERROR;
2090
if ( ld->ld_error ) {
2091
LDAP_FREE( ld->ld_error );
2093
ld->ld_error = LDAP_STRDUP(
2094
_("TLS: hostname does not match CN in peer certificate"));
2103
ldap_int_tls_config( LDAP *ld, int option, const char *arg )
2108
case LDAP_OPT_X_TLS_CACERTFILE:
2109
case LDAP_OPT_X_TLS_CACERTDIR:
2110
case LDAP_OPT_X_TLS_CERTFILE:
2111
case LDAP_OPT_X_TLS_KEYFILE:
2112
case LDAP_OPT_X_TLS_RANDOM_FILE:
2113
case LDAP_OPT_X_TLS_CIPHER_SUITE:
2114
case LDAP_OPT_X_TLS_DHFILE:
2116
case LDAP_OPT_X_TLS_CRLFILE:
2118
return ldap_pvt_tls_set_option( ld, option, (void *) arg );
2120
case LDAP_OPT_X_TLS_REQUIRE_CERT:
2121
case LDAP_OPT_X_TLS:
2123
if ( strcasecmp( arg, "never" ) == 0 ) {
2124
i = LDAP_OPT_X_TLS_NEVER ;
2126
} else if ( strcasecmp( arg, "demand" ) == 0 ) {
2127
i = LDAP_OPT_X_TLS_DEMAND ;
2129
} else if ( strcasecmp( arg, "allow" ) == 0 ) {
2130
i = LDAP_OPT_X_TLS_ALLOW ;
2132
} else if ( strcasecmp( arg, "try" ) == 0 ) {
2133
i = LDAP_OPT_X_TLS_TRY ;
2135
} else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
2136
( strcasecmp( arg, "on" ) == 0 ) ||
2137
( strcasecmp( arg, "yes" ) == 0) ||
2138
( strcasecmp( arg, "true" ) == 0 ) )
2140
i = LDAP_OPT_X_TLS_HARD ;
2144
return ldap_pvt_tls_set_option( ld, option, &i );
2147
#ifdef HAVE_OPENSSL_CRL
2148
case LDAP_OPT_X_TLS_CRLCHECK:
2150
if ( strcasecmp( arg, "none" ) == 0 ) {
2151
i = LDAP_OPT_X_TLS_CRL_NONE ;
2152
} else if ( strcasecmp( arg, "peer" ) == 0 ) {
2153
i = LDAP_OPT_X_TLS_CRL_PEER ;
2154
} else if ( strcasecmp( arg, "all" ) == 0 ) {
2155
i = LDAP_OPT_X_TLS_CRL_ALL ;
2158
return ldap_pvt_tls_set_option( ld, option, &i );
2167
ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
2169
struct ldapoptions *lo;
2172
assert( LDAP_VALID( ld ) );
2174
if( !LDAP_VALID( ld ) ) {
2175
return LDAP_OPT_ERROR;
2178
lo = &ld->ld_options;
2181
/* Get pointer to global option structure */
2182
lo = LDAP_INT_GLOBAL_OPT();
2184
return LDAP_NO_MEMORY;
2189
case LDAP_OPT_X_TLS:
2190
*(int *)arg = lo->ldo_tls_mode;
2192
case LDAP_OPT_X_TLS_CTX:
2193
*(void **)arg = lo->ldo_tls_ctx;
2194
if ( lo->ldo_tls_ctx ) {
2195
tls_ctx_ref( lo->ldo_tls_ctx );
2198
case LDAP_OPT_X_TLS_CACERTFILE:
2199
*(char **)arg = lo->ldo_tls_cacertfile ?
2200
LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
2202
case LDAP_OPT_X_TLS_CACERTDIR:
2203
*(char **)arg = lo->ldo_tls_cacertdir ?
2204
LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
2206
case LDAP_OPT_X_TLS_CERTFILE:
2207
*(char **)arg = lo->ldo_tls_certfile ?
2208
LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
2210
case LDAP_OPT_X_TLS_KEYFILE:
2211
*(char **)arg = lo->ldo_tls_keyfile ?
2212
LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
2214
case LDAP_OPT_X_TLS_DHFILE:
2215
*(char **)arg = lo->ldo_tls_dhfile ?
2216
LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
2219
case LDAP_OPT_X_TLS_CRLFILE:
2220
*(char **)arg = lo->ldo_tls_crlfile ?
2221
LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
2224
case LDAP_OPT_X_TLS_REQUIRE_CERT:
2225
*(int *)arg = lo->ldo_tls_require_cert;
2227
#ifdef HAVE_OPENSSL_CRL
2228
case LDAP_OPT_X_TLS_CRLCHECK:
2229
*(int *)arg = lo->ldo_tls_crlcheck;
2232
case LDAP_OPT_X_TLS_CIPHER_SUITE:
2233
*(char **)arg = lo->ldo_tls_ciphersuite ?
2234
LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
2236
case LDAP_OPT_X_TLS_RANDOM_FILE:
2238
*(char **)arg = tls_opt_randfile ?
2239
LDAP_STRDUP( tls_opt_randfile ) : NULL;
2241
*(char **)arg = NULL;
2244
case LDAP_OPT_X_TLS_SSL_CTX: {
2247
LDAPConn *conn = ld->ld_defconn;
2248
if ( conn != NULL ) {
2249
Sockbuf *sb = conn->lconn_sb;
2250
retval = ldap_pvt_tls_sb_ctx( sb );
2253
*(void **)arg = retval;
2256
case LDAP_OPT_X_TLS_CONNECT_CB:
2257
*(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
2259
case LDAP_OPT_X_TLS_CONNECT_ARG:
2260
*(void **)arg = lo->ldo_tls_connect_arg;
2269
ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
2271
struct ldapoptions *lo;
2274
assert( LDAP_VALID( ld ) );
2276
if( !LDAP_VALID( ld ) ) {
2277
return LDAP_OPT_ERROR;
2280
lo = &ld->ld_options;
2283
/* Get pointer to global option structure */
2284
lo = LDAP_INT_GLOBAL_OPT();
2286
return LDAP_NO_MEMORY;
2291
case LDAP_OPT_X_TLS:
2292
if ( !arg ) return -1;
2294
switch( *(int *) arg ) {
2295
case LDAP_OPT_X_TLS_NEVER:
2296
case LDAP_OPT_X_TLS_DEMAND:
2297
case LDAP_OPT_X_TLS_ALLOW:
2298
case LDAP_OPT_X_TLS_TRY:
2299
case LDAP_OPT_X_TLS_HARD:
2301
lo->ldo_tls_mode = *(int *)arg;
2308
case LDAP_OPT_X_TLS_CTX:
2309
if ( lo->ldo_tls_ctx )
2310
ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2311
lo->ldo_tls_ctx = arg;
2312
tls_ctx_ref( lo->ldo_tls_ctx );
2314
case LDAP_OPT_X_TLS_CONNECT_CB:
2315
lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
2317
case LDAP_OPT_X_TLS_CONNECT_ARG:
2318
lo->ldo_tls_connect_arg = arg;
2320
case LDAP_OPT_X_TLS_CACERTFILE:
2321
if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
2322
lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2324
case LDAP_OPT_X_TLS_CACERTDIR:
2325
if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
2326
lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2328
case LDAP_OPT_X_TLS_CERTFILE:
2329
if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
2330
lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2332
case LDAP_OPT_X_TLS_KEYFILE:
2333
if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
2334
lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2336
case LDAP_OPT_X_TLS_DHFILE:
2337
if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
2338
lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2341
case LDAP_OPT_X_TLS_CRLFILE:
2342
if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
2343
lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2346
case LDAP_OPT_X_TLS_REQUIRE_CERT:
2347
if ( !arg ) return -1;
2348
switch( *(int *) arg ) {
2349
case LDAP_OPT_X_TLS_NEVER:
2350
case LDAP_OPT_X_TLS_DEMAND:
2351
case LDAP_OPT_X_TLS_ALLOW:
2352
case LDAP_OPT_X_TLS_TRY:
2353
case LDAP_OPT_X_TLS_HARD:
2354
lo->ldo_tls_require_cert = * (int *) arg;
2358
#ifdef HAVE_OPENSSL_CRL
2359
case LDAP_OPT_X_TLS_CRLCHECK:
2360
if ( !arg ) return -1;
2361
switch( *(int *) arg ) {
2362
case LDAP_OPT_X_TLS_CRL_NONE:
2363
case LDAP_OPT_X_TLS_CRL_PEER:
2364
case LDAP_OPT_X_TLS_CRL_ALL:
2365
lo->ldo_tls_crlcheck = * (int *) arg;
2370
case LDAP_OPT_X_TLS_CIPHER_SUITE:
2371
if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
2372
lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2375
case LDAP_OPT_X_TLS_RANDOM_FILE:
2379
if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
2380
tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
2384
case LDAP_OPT_X_TLS_NEWCTX:
2385
if ( !arg ) return -1;
2386
if ( lo->ldo_tls_ctx )
2387
ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
2388
lo->ldo_tls_ctx = NULL;
2389
return ldap_int_tls_init_ctx( lo, *(int *)arg );
2397
ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
2399
Sockbuf *sb = conn->lconn_sb;
2404
host = srv->lud_host;
2406
host = conn->lconn_server->lud_host;
2409
/* avoid NULL host */
2410
if( host == NULL ) {
2414
(void) ldap_pvt_tls_init();
2417
* Fortunately, the lib uses blocking io...
2419
if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
2420
ld->ld_errno = LDAP_CONNECT_ERROR;
2421
return (ld->ld_errno);
2424
ssl = ldap_pvt_tls_sb_ctx( sb );
2425
assert( ssl != NULL );
2428
* compare host with name(s) in certificate
2430
if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
2431
ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
2432
if (ld->ld_errno != LDAP_SUCCESS) {
2433
return ld->ld_errno;
2437
return LDAP_SUCCESS;
2441
/* Derived from openssl/apps/s_cb.c */
2443
tls_info_cb( const SSL *ssl, int where, int ret )
2447
char *state = (char *) SSL_state_string_long( (SSL *)ssl );
2449
w = where & ~SSL_ST_MASK;
2450
if ( w & SSL_ST_CONNECT ) {
2452
} else if ( w & SSL_ST_ACCEPT ) {
2460
state = LDAP_STRDUP( state );
2464
if ( where & SSL_CB_LOOP ) {
2465
Debug( LDAP_DEBUG_TRACE,
2466
"TLS trace: %s:%s\n",
2469
} else if ( where & SSL_CB_ALERT ) {
2470
char *atype = (char *) SSL_alert_type_string_long( ret );
2471
char *adesc = (char *) SSL_alert_desc_string_long( ret );
2472
op = ( where & SSL_CB_READ ) ? "read" : "write";
2475
atype = LDAP_STRDUP( atype );
2479
adesc = LDAP_STRDUP( adesc );
2483
Debug( LDAP_DEBUG_TRACE,
2484
"TLS trace: SSL3 alert %s:%s:%s\n",
2487
if ( atype ) LDAP_FREE( atype );
2488
if ( adesc ) LDAP_FREE( adesc );
2490
} else if ( where & SSL_CB_EXIT ) {
2492
Debug( LDAP_DEBUG_TRACE,
2493
"TLS trace: %s:failed in %s\n",
2495
} else if ( ret < 0 ) {
2496
Debug( LDAP_DEBUG_TRACE,
2497
"TLS trace: %s:error in %s\n",
2502
if ( state ) LDAP_FREE( state );
2507
tls_verify_cb( int ok, X509_STORE_CTX *ctx )
2516
char *certerr = NULL;
2518
cert = X509_STORE_CTX_get_current_cert( ctx );
2519
errnum = X509_STORE_CTX_get_error( ctx );
2520
errdepth = X509_STORE_CTX_get_error_depth( ctx );
2523
* X509_get_*_name return pointers to the internal copies of
2524
* those things requested. So do not free them.
2526
subject = X509_get_subject_name( cert );
2527
issuer = X509_get_issuer_name( cert );
2528
/* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
2529
sname = X509_NAME_oneline( subject, NULL, 0 );
2530
iname = X509_NAME_oneline( issuer, NULL, 0 );
2531
if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
2533
if ( sname ) __etoa( sname );
2534
if ( iname ) __etoa( iname );
2536
certerr = LDAP_STRDUP( certerr );
2540
Debug( LDAP_DEBUG_TRACE,
2541
"TLS certificate verification: depth: %d, err: %d, subject: %s,",
2543
sname ? sname : "-unknown-" );
2544
Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
2546
Debug( LDAP_DEBUG_ANY,
2547
"TLS certificate verification: Error, %s\n",
2551
CRYPTO_free ( sname );
2553
CRYPTO_free ( iname );
2555
if ( certerr ) LDAP_FREE( certerr );
2561
tls_verify_ok( int ok, X509_STORE_CTX *ctx )
2563
(void) tls_verify_cb( ok, ctx );
2567
/* Inspired by ERR_print_errors in OpenSSL */
2569
tls_report_error( void )
2576
while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
2577
ERR_error_string_n( l, buf, sizeof( buf ) );
2580
file = LDAP_STRDUP( file );
2581
__etoa( (char *)file );
2585
Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
2588
if ( file ) LDAP_FREE( (void *)file );
2594
tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
2598
/* FIXME: Pregenerate the key on startup */
2599
/* FIXME: Who frees the key? */
2600
tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
2603
Debug( LDAP_DEBUG_ANY,
2604
"TLS: Failed to generate temporary %d-bit %s RSA key\n",
2605
key_length, is_export ? "export" : "domestic", 0 );
2612
tls_seed_PRNG( const char *randfile )
2614
#ifndef URANDOM_DEVICE
2615
/* no /dev/urandom (or equiv) */
2617
char buffer[MAXPATHLEN];
2619
if (randfile == NULL) {
2620
/* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
2621
* If $HOME is not set or buffer too small to hold the pathname,
2622
* an error occurs. - From RAND_file_name() man page.
2623
* The fact is that when $HOME is NULL, .rnd is used.
2625
randfile = RAND_file_name( buffer, sizeof( buffer ) );
2627
} else if (RAND_egd(randfile) > 0) {
2632
if (randfile == NULL) {
2633
Debug( LDAP_DEBUG_ANY,
2634
"TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
2639
total = RAND_load_file(randfile, -1);
2641
if (RAND_status() == 0) {
2642
Debug( LDAP_DEBUG_ANY,
2643
"TLS: PRNG not been seeded with enough data\n",
2648
/* assume if there was enough bits to seed that it's okay
2649
* to write derived bits to the file
2651
RAND_write_file(randfile);
2665
/* From the OpenSSL 0.9.7 distro */
2666
static const char dhpem512[] =
2667
"-----BEGIN DH PARAMETERS-----\n\
2668
MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
2669
a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
2670
-----END DH PARAMETERS-----\n";
2672
static const char dhpem1024[] =
2673
"-----BEGIN DH PARAMETERS-----\n\
2674
MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
2675
/Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
2676
/mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
2677
-----END DH PARAMETERS-----\n";
2679
static const char dhpem2048[] =
2680
"-----BEGIN DH PARAMETERS-----\n\
2681
MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
2682
AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
2683
z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
2684
pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
2685
aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
2686
Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
2687
-----END DH PARAMETERS-----\n";
2689
static const char dhpem4096[] =
2690
"-----BEGIN DH PARAMETERS-----\n\
2691
MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
2692
vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
2693
TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
2694
bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
2695
rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
2696
EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
2697
bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
2698
W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
2699
ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
2700
NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
2701
jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
2702
-----END DH PARAMETERS-----\n";
2704
static const struct dhinfo dhpem[] = {
2705
{ 512, dhpem512, sizeof(dhpem512) },
2706
{ 1024, dhpem1024, sizeof(dhpem1024) },
2707
{ 2048, dhpem2048, sizeof(dhpem2048) },
2708
{ 4096, dhpem4096, sizeof(dhpem4096) },
2713
tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
2715
struct dhplist *p = NULL;
2720
/* Do we have params of this length already? */
2721
#ifdef LDAP_R_COMPILE
2722
ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
2724
for ( p = dhparams; p; p=p->next ) {
2725
if ( p->keylength == key_length ) {
2726
#ifdef LDAP_R_COMPILE
2727
ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2733
/* No - check for hardcoded params */
2735
for (i=0; dhpem[i].keylength; i++) {
2736
if ( dhpem[i].keylength == key_length ) {
2737
b = BIO_new_mem_buf( (char *)dhpem[i].pem, dhpem[i].size );
2743
dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
2747
/* Generating on the fly is expensive/slow... */
2749
dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
2752
p = LDAP_MALLOC( sizeof(struct dhplist) );
2754
p->keylength = key_length;
2761
#ifdef LDAP_R_COMPILE
2762
ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
2768
#endif /* HAVE_OPENSSL */
2771
ldap_pvt_tls_sb_ctx( Sockbuf *sb )
2776
if (HAS_TLS( sb )) {
2777
ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
2786
ldap_pvt_tls_get_strength( void *s )
2791
c = SSL_get_current_cipher((SSL *)s);
2792
return SSL_CIPHER_get_bits(c, NULL);
2793
#elif defined(HAVE_GNUTLS)
2794
tls_session *session = s;
2795
gnutls_cipher_algorithm_t c;
2797
c = gnutls_cipher_get( session->session );
2798
return gnutls_cipher_get_key_size( c ) * 8;
2806
ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
2809
struct berval der_dn;
2815
x = SSL_get_certificate((SSL *)s);
2817
if (!x) return LDAP_INVALID_CREDENTIALS;
2819
xn = X509_get_subject_name(x);
2820
der_dn.bv_len = i2d_X509_NAME( xn, NULL );
2821
der_dn.bv_val = xn->bytes->data;
2822
#elif defined(HAVE_GNUTLS)
2823
tls_session *session = s;
2824
const gnutls_datum_t *x;
2827
x = gnutls_certificate_get_ours( session->session );
2829
if (!x) return LDAP_INVALID_CREDENTIALS;
2831
bv.bv_val = x->data;
2832
bv.bv_len = x->size;
2834
x509_cert_get_dn( &bv, &der_dn, 1 );
2836
rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
2838
#else /* !HAVE_TLS */
2839
return LDAP_NOT_SUPPORTED;
2844
ldap_start_tls( LDAP *ld,
2845
LDAPControl **serverctrls,
2846
LDAPControl **clientctrls,
2849
return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
2850
NULL, serverctrls, clientctrls, msgidp );
2854
ldap_install_tls( LDAP *ld )
2857
return LDAP_NOT_SUPPORTED;
2859
if ( ldap_tls_inplace( ld ) ) {
2860
return LDAP_LOCAL_ERROR;
2863
return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2868
ldap_start_tls_s ( LDAP *ld,
2869
LDAPControl **serverctrls,
2870
LDAPControl **clientctrls )
2873
return LDAP_NOT_SUPPORTED;
2876
char *rspoid = NULL;
2877
struct berval *rspdata = NULL;
2879
/* XXYYZ: this initiates operation only on default connection! */
2881
if ( ldap_tls_inplace( ld ) ) {
2882
return LDAP_LOCAL_ERROR;
2885
rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
2886
NULL, serverctrls, clientctrls, &rspoid, &rspdata );
2888
if ( rspoid != NULL ) {
2892
if ( rspdata != NULL ) {
2893
ber_bvfree( rspdata );
2896
if ( rc == LDAP_SUCCESS ) {
2897
rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
2904
/* These tags probably all belong in lber.h, but they're
2905
* not normally encountered when processing LDAP, so maybe
2906
* they belong somewhere else instead.
2909
#define LBER_TAG_OID ((ber_tag_t) 0x06UL)
2911
/* Tags for string types used in a DirectoryString.
2913
* Note that IA5string is not one of the defined choices for
2914
* DirectoryString in X.520, but it gets used for email AVAs.
2916
#define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
2917
#define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
2918
#define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
2919
#define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
2920
#define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
2921
#define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
2924
find_oid( struct berval *oid )
2928
for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
2929
if ( oids[i].oid.bv_len != oid->bv_len ) continue;
2930
if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
2936
/* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
2937
* x509_name must be raw DER. If func is non-NULL, the
2938
* constructed DN will use numeric OIDs to identify attributeTypes,
2939
* and the func() will be invoked to rewrite the DN with the given
2942
* Otherwise the DN will use shortNames from a hardcoded table.
2945
ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
2950
LDAPAVA *newAVA, *baseAVA;
2951
BerElementBuffer berbuf;
2952
BerElement *ber = (BerElement *)&berbuf;
2953
char oids[8192], *oidptr = oids, *oidbuf = NULL;
2955
char *dn_end, *rdn_end;
2956
int i, navas, nrdns, rc = LDAP_SUCCESS;
2957
size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
2963
struct berval Oid, Val, oid2, *in = x509_name;
2965
assert( bv != NULL );
2973
/* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
2974
* An AVA is a SEQUENCE of attr and value.
2975
* Count the number of AVAs and RDNs
2977
ber_init2( ber, in, LBER_USE_DER );
2978
tag = ber_peek_tag( ber, &len );
2979
if ( tag != LBER_SEQUENCE )
2980
return LDAP_DECODING_ERROR;
2982
for ( tag = ber_first_element( ber, &len, &dn_end );
2984
tag = ber_next_element( ber, &len, dn_end )) {
2986
for ( tag = ber_first_element( ber, &len, &rdn_end );
2987
tag == LBER_SEQUENCE;
2988
tag = ber_next_element( ber, &len, rdn_end )) {
2989
tag = ber_skip_tag( ber, &len );
2990
ber_skip_data( ber, len );
2995
/* Allocate the DN/RDN/AVA stuff as a single block */
2996
dnsize = sizeof(LDAPRDN) * (nrdns+1);
2997
dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
2998
dnsize += sizeof(LDAPAVA) * navas;
2999
if (dnsize > sizeof(ptrs)) {
3000
newDN = (LDAPDN)LDAP_MALLOC( dnsize );
3001
if ( newDN == NULL )
3002
return LDAP_NO_MEMORY;
3004
newDN = (LDAPDN)(char *)ptrs;
3007
newDN[nrdns] = NULL;
3008
newRDN = (LDAPRDN)(newDN + nrdns+1);
3009
newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
3012
/* Rewind and start extracting */
3015
tag = ber_first_element( ber, &len, &dn_end );
3016
for ( i = nrdns - 1; i >= 0; i-- ) {
3019
for ( tag = ber_first_element( ber, &len, &rdn_end );
3020
tag == LBER_SEQUENCE;
3021
tag = ber_next_element( ber, &len, rdn_end )) {
3024
tag = ber_skip_tag( ber, &len );
3025
tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
3026
if ( tag != LBER_TAG_OID ) {
3027
rc = LDAP_DECODING_ERROR;
3031
oid2.bv_val = oidptr;
3032
oid2.bv_len = oidrem;
3033
if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) {
3034
rc = LDAP_DECODING_ERROR;
3037
oidname = find_oid( &oid2 );
3039
newAVA->la_attr = oid2;
3040
oidptr += oid2.bv_len + 1;
3041
oidrem -= oid2.bv_len + 1;
3043
/* Running out of OID buffer space? */
3045
if ( oidsize == 0 ) {
3046
oidsize = sizeof(oids) * 2;
3048
oidbuf = LDAP_MALLOC( oidsize );
3049
if ( oidbuf == NULL ) goto nomem;
3053
oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
3054
if ( oidbuf == NULL ) goto nomem;
3055
/* Buffer moved! Fix AVA pointers */
3056
if ( old != oidbuf ) {
3058
long dif = oidbuf - old;
3060
for (a=baseAVA; a<=newAVA; a++){
3061
if (a->la_attr.bv_val >= old &&
3062
a->la_attr.bv_val <= (old + oidsize))
3063
a->la_attr.bv_val += dif;
3066
oidptr = oidbuf + oidsize - oidrem;
3073
newAVA->la_attr = oidname->oid;
3075
newAVA->la_attr = oidname->name;
3078
tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
3080
case LBER_TAG_UNIVERSAL:
3081
/* This uses 32-bit ISO 10646-1 */
3082
csize = 4; goto to_utf8;
3084
/* This uses 16-bit ISO 10646-1 */
3085
csize = 2; goto to_utf8;
3086
case LBER_TAG_TELETEX:
3087
/* This uses 8-bit, assume ISO 8859-1 */
3089
to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
3090
newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
3091
if (rc != LDAP_SUCCESS) goto nomem;
3092
newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3095
newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
3096
/* This is already in UTF-8 encoding */
3098
case LBER_TAG_PRINTABLE:
3099
/* These are always 7-bit strings */
3100
newAVA->la_value = Val;
3104
newAVA->la_private = NULL;
3105
newAVA->la_flags = LDAP_AVA_STRING;
3109
tag = ber_next_element( ber, &len, dn_end );
3113
rc = func( newDN, flags, NULL );
3114
if ( rc != LDAP_SUCCESS )
3118
rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
3121
for (;baseAVA < newAVA; baseAVA++) {
3122
if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
3123
LDAP_FREE( baseAVA->la_attr.bv_val );
3124
if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
3125
LDAP_FREE( baseAVA->la_value.bv_val );
3129
LDAP_FREE( oidbuf );
3130
if ( newDN != (LDAPDN)(char *) ptrs )
added
removed
libraries/libldap/tls.c
