1
/* tls_o.c - Handle tls/ssl using SSLeay or OpenSSL */
2
/* $OpenLDAP: pkg/ldap/libraries/libldap/tls_o.c,v 1.5.2.2 2009/02/10 16:41:01 quanah Exp $ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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* Copyright 2008-2009 The OpenLDAP Foundation.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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/* ACKNOWLEDGEMENTS: Rewritten by Howard Chu
23
#include "ldap_config.h"
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#include <ac/stdlib.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/unistd.h>
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#include <ac/dirent.h>
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#include <ldap_pvt_thread.h>
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#ifdef HAVE_OPENSSL_SSL_H
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#include <openssl/ssl.h>
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#include <openssl/x509v3.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#include <openssl/safestack.h>
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#elif defined( HAVE_SSL_H )
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typedef SSL_CTX tlso_ctx;
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typedef SSL tlso_session;
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static int tlso_opt_trace = 1;
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static void tlso_report_error( void );
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static void tlso_info_cb( const SSL *ssl, int where, int ret );
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static int tlso_verify_cb( int ok, X509_STORE_CTX *ctx );
63
static int tlso_verify_ok( int ok, X509_STORE_CTX *ctx );
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static RSA * tlso_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
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static DH * tlso_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
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typedef struct dhplist {
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static dhplist *tlso_dhparams;
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static int tlso_seed_PRNG( const char *randfile );
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* provide mutexes for the SSLeay library.
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static ldap_pvt_thread_mutex_t tlso_mutexes[CRYPTO_NUM_LOCKS];
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static ldap_pvt_thread_mutex_t tlso_dh_mutex;
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static void tlso_locking_cb( int mode, int type, const char *file, int line )
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if ( mode & CRYPTO_LOCK ) {
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ldap_pvt_thread_mutex_lock( &tlso_mutexes[type] );
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ldap_pvt_thread_mutex_unlock( &tlso_mutexes[type] );
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static unsigned long tlso_thread_self( void )
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/* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
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* is an integral type that fits in an unsigned long
100
/* force an error if the ldap_pvt_thread_t type is too large */
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enum { ok = sizeof( ldap_pvt_thread_t ) <= sizeof( unsigned long ) };
102
typedef struct { int dummy: ok ? 1 : -1; } Check[ok ? 1 : -1];
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return (unsigned long) ldap_pvt_thread_self();
107
static void tlso_thr_init( void )
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for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
112
ldap_pvt_thread_mutex_init( &tlso_mutexes[i] );
114
ldap_pvt_thread_mutex_init( &tlso_dh_mutex );
115
CRYPTO_set_locking_callback( tlso_locking_cb );
116
CRYPTO_set_id_callback( tlso_thread_self );
118
#endif /* LDAP_R_COMPILE */
120
static STACK_OF(X509_NAME) *
121
tlso_ca_list( char * bundle, char * dir )
123
STACK_OF(X509_NAME) *ca_list = NULL;
126
ca_list = SSL_load_client_CA_file( bundle );
128
#if defined(HAVE_DIRENT_H) || defined(dirent)
133
ca_list = sk_X509_NAME_new_null();
136
if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
138
sk_X509_NAME_free( ca_list );
147
* Initialize TLS subsystem. Should be called only once.
152
struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
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char *file = LDAP_STRDUP( lo->ldo_tls_randfile );
156
if ( file ) __atoe( file );
157
(void) tlso_seed_PRNG( file );
161
(void) tlso_seed_PRNG( lo->ldo_tls_randfile );
164
SSL_load_error_strings();
165
SSLeay_add_ssl_algorithms();
167
/* FIXME: mod_ssl does this */
168
X509V3_add_standard_extensions();
174
* Tear down the TLS subsystem. Should only be called once.
179
struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
185
if ( lo->ldo_tls_randfile ) {
186
LDAP_FREE( lo->ldo_tls_randfile );
187
lo->ldo_tls_randfile = NULL;
192
tlso_ctx_new( struct ldapoptions *lo )
194
return (tls_ctx *) SSL_CTX_new( SSLv23_method() );
198
tlso_ctx_ref( tls_ctx *ctx )
200
tlso_ctx *c = (tlso_ctx *)ctx;
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CRYPTO_add( &c->references, 1, CRYPTO_LOCK_SSL_CTX );
205
tlso_ctx_free ( tls_ctx *ctx )
207
tlso_ctx *c = (tlso_ctx *)ctx;
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* initialize a new TLS context
215
tlso_ctx_init( struct ldapoptions *lo, struct ldaptls *lt, int is_server )
217
tlso_ctx *ctx = (tlso_ctx *)lo->ldo_tls_ctx;
221
SSL_CTX_set_session_id_context( ctx,
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(const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
225
if ( lo->ldo_tls_protocol_min > LDAP_OPT_X_TLS_PROTOCOL_SSL3 )
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SSL_CTX_set_options( ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 );
227
else if ( lo->ldo_tls_protocol_min > LDAP_OPT_X_TLS_PROTOCOL_SSL2 )
228
SSL_CTX_set_options( ctx, SSL_OP_NO_SSLv2 );
230
if ( lo->ldo_tls_ciphersuite &&
231
!SSL_CTX_set_cipher_list( ctx, lt->lt_ciphersuite ) )
233
Debug( LDAP_DEBUG_ANY,
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"TLS: could not set cipher list %s.\n",
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lo->ldo_tls_ciphersuite, 0, 0 );
240
if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
241
if ( !SSL_CTX_load_verify_locations( ctx,
242
lt->lt_cacertfile, lt->lt_cacertdir ) ||
243
!SSL_CTX_set_default_verify_paths( ctx ) )
245
Debug( LDAP_DEBUG_ANY, "TLS: "
246
"could not load verify locations (file:`%s',dir:`%s').\n",
247
lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
248
lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
255
STACK_OF(X509_NAME) *calist;
256
/* List of CA names to send to a client */
257
calist = tlso_ca_list( lt->lt_cacertfile, lt->lt_cacertdir );
259
Debug( LDAP_DEBUG_ANY, "TLS: "
260
"could not load client CA list (file:`%s',dir:`%s').\n",
261
lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
262
lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
268
SSL_CTX_set_client_CA_list( ctx, calist );
272
if ( lo->ldo_tls_certfile &&
273
!SSL_CTX_use_certificate_file( ctx,
274
lt->lt_certfile, SSL_FILETYPE_PEM ) )
276
Debug( LDAP_DEBUG_ANY,
277
"TLS: could not use certificate `%s'.\n",
278
lo->ldo_tls_certfile,0,0);
283
/* Key validity is checked automatically if cert has already been set */
284
if ( lo->ldo_tls_keyfile &&
285
!SSL_CTX_use_PrivateKey_file( ctx,
286
lt->lt_keyfile, SSL_FILETYPE_PEM ) )
288
Debug( LDAP_DEBUG_ANY,
289
"TLS: could not use key file `%s'.\n",
290
lo->ldo_tls_keyfile,0,0);
295
if ( lo->ldo_tls_dhfile ) {
300
if (( bio=BIO_new_file( lt->lt_dhfile,"r" )) == NULL ) {
301
Debug( LDAP_DEBUG_ANY,
302
"TLS: could not use DH parameters file `%s'.\n",
303
lo->ldo_tls_dhfile,0,0);
307
while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
308
p = LDAP_MALLOC( sizeof(dhplist) );
310
p->keylength = DH_size( dh ) * 8;
312
p->next = tlso_dhparams;
319
if ( tlso_opt_trace ) {
320
SSL_CTX_set_info_callback( ctx, tlso_info_cb );
324
if ( lo->ldo_tls_require_cert ) {
326
if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
327
lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
328
i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
332
SSL_CTX_set_verify( ctx, i,
333
lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
334
tlso_verify_ok : tlso_verify_cb );
335
SSL_CTX_set_tmp_rsa_callback( ctx, tlso_tmp_rsa_cb );
336
if ( lo->ldo_tls_dhfile ) {
337
SSL_CTX_set_tmp_dh_callback( ctx, tlso_tmp_dh_cb );
339
#ifdef HAVE_OPENSSL_CRL
340
if ( lo->ldo_tls_crlcheck ) {
341
X509_STORE *x509_s = SSL_CTX_get_cert_store( ctx );
342
if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
343
X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
344
} else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
345
X509_STORE_set_flags( x509_s,
346
X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
354
tlso_session_new( tls_ctx *ctx, int is_server )
356
tlso_ctx *c = (tlso_ctx *)ctx;
357
return (tls_session *)SSL_new( c );
361
tlso_session_connect( LDAP *ld, tls_session *sess )
363
tlso_session *s = (tlso_session *)sess;
365
/* Caller expects 0 = success, OpenSSL returns 1 = success */
366
return SSL_connect( s ) - 1;
370
tlso_session_accept( tls_session *sess )
372
tlso_session *s = (tlso_session *)sess;
374
/* Caller expects 0 = success, OpenSSL returns 1 = success */
375
return SSL_accept( s ) - 1;
379
tlso_session_upflags( Sockbuf *sb, tls_session *sess, int rc )
381
tlso_session *s = (tlso_session *)sess;
383
/* 1 was subtracted above, offset it back now */
384
rc = SSL_get_error(s, rc+1);
385
if (rc == SSL_ERROR_WANT_READ) {
386
sb->sb_trans_needs_read = 1;
389
} else if (rc == SSL_ERROR_WANT_WRITE) {
390
sb->sb_trans_needs_write = 1;
393
} else if (rc == SSL_ERROR_WANT_CONNECT) {
400
tlso_session_errmsg( int rc, char *buf, size_t len )
402
rc = ERR_peek_error();
404
ERR_error_string_n( rc, buf, len );
411
tlso_session_my_dn( tls_session *sess, struct berval *der_dn )
413
tlso_session *s = (tlso_session *)sess;
417
x = SSL_get_certificate( s );
419
if (!x) return LDAP_INVALID_CREDENTIALS;
421
xn = X509_get_subject_name(x);
422
der_dn->bv_len = i2d_X509_NAME( xn, NULL );
423
der_dn->bv_val = xn->bytes->data;
429
tlso_get_cert( SSL *s )
431
/* If peer cert was bad, treat as if no cert was given */
432
if (SSL_get_verify_result(s)) {
435
return SSL_get_peer_certificate(s);
439
tlso_session_peer_dn( tls_session *sess, struct berval *der_dn )
441
tlso_session *s = (tlso_session *)sess;
442
X509 *x = tlso_get_cert( s );
446
return LDAP_INVALID_CREDENTIALS;
448
xn = X509_get_subject_name(x);
449
der_dn->bv_len = i2d_X509_NAME( xn, NULL );
450
der_dn->bv_val = xn->bytes->data;
455
/* what kind of hostname were we given? */
461
tlso_session_chkhost( LDAP *ld, tls_session *sess, const char *name_in )
463
tlso_session *s = (tlso_session *)sess;
464
int i, ret = LDAP_LOCAL_ERROR;
470
struct in6_addr addr;
475
if( ldap_int_hostname &&
476
( !name_in || !strcasecmp( name_in, "localhost" ) ) )
478
name = ldap_int_hostname;
483
x = tlso_get_cert(s);
485
Debug( LDAP_DEBUG_ANY,
486
"TLS: unable to get peer certificate.\n",
488
/* If this was a fatal condition, things would have
489
* aborted long before now.
495
if (name[0] == '[' && strchr(name, ']')) {
496
char *n2 = ldap_strdup(name+1);
497
*strchr(n2, ']') = 0;
498
if (inet_pton(AF_INET6, n2, &addr))
503
if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
504
if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
507
i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
510
STACK_OF(GENERAL_NAME) *alt;
512
ex = X509_get_ext(x, i);
513
alt = X509V3_EXT_d2i(ex);
515
int n, len1 = 0, len2 = 0;
519
if (ntype == IS_DNS) {
521
domain = strchr(name, '.');
523
len2 = len1 - (domain-name);
526
n = sk_GENERAL_NAME_num(alt);
527
for (i=0; i<n; i++) {
530
gn = sk_GENERAL_NAME_value(alt, i);
531
if (gn->type == GEN_DNS) {
532
if (ntype != IS_DNS) continue;
534
sn = (char *) ASN1_STRING_data(gn->d.ia5);
535
sl = ASN1_STRING_length(gn->d.ia5);
538
if (sl == 0) continue;
540
/* Is this an exact match? */
541
if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
545
/* Is this a wildcard match? */
546
if (domain && (sn[0] == '*') && (sn[1] == '.') &&
547
(len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
552
} else if (gn->type == GEN_IPADD) {
553
if (ntype == IS_DNS) continue;
555
sn = (char *) ASN1_STRING_data(gn->d.ia5);
556
sl = ASN1_STRING_length(gn->d.ia5);
559
if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
563
if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
566
if (!memcmp(sn, &addr, sl)) {
572
GENERAL_NAMES_free(alt);
573
if (i < n) { /* Found a match */
579
if (ret != LDAP_SUCCESS) {
584
xn = X509_get_subject_name(x);
585
if( X509_NAME_get_text_by_NID( xn, NID_commonName,
586
buf, sizeof(buf)) == -1)
588
Debug( LDAP_DEBUG_ANY,
589
"TLS: unable to get common name from peer certificate.\n",
591
ret = LDAP_CONNECT_ERROR;
592
if ( ld->ld_error ) {
593
LDAP_FREE( ld->ld_error );
595
ld->ld_error = LDAP_STRDUP(
596
_("TLS: unable to get CN from peer certificate"));
598
} else if (strcasecmp(name, buf) == 0 ) {
601
} else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
602
char *domain = strchr(name, '.');
608
dlen = sl - (domain-name);
611
/* Is this a wildcard match? */
612
if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
618
if( ret == LDAP_LOCAL_ERROR ) {
619
Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
620
"common name in certificate (%s).\n",
622
ret = LDAP_CONNECT_ERROR;
623
if ( ld->ld_error ) {
624
LDAP_FREE( ld->ld_error );
626
ld->ld_error = LDAP_STRDUP(
627
_("TLS: hostname does not match CN in peer certificate"));
635
tlso_session_strength( tls_session *sess )
637
tlso_session *s = (tlso_session *)sess;
640
c = SSL_get_current_cipher(s);
641
return SSL_CIPHER_get_bits(c, NULL);
645
* TLS support for LBER Sockbufs
649
tlso_session *session;
650
Sockbuf_IO_Desc *sbiod;
654
tlso_bio_create( BIO *b ) {
663
tlso_bio_destroy( BIO *b )
665
if ( b == NULL ) return 0;
667
b->ptr = NULL; /* sb_tls_remove() will free it */
674
tlso_bio_read( BIO *b, char *buf, int len )
679
if ( buf == NULL || len <= 0 ) return 0;
681
p = (struct tls_data *)b->ptr;
683
if ( p == NULL || p->sbiod == NULL ) {
687
ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
689
BIO_clear_retry_flags( b );
691
int err = sock_errno();
692
if ( err == EAGAIN || err == EWOULDBLOCK ) {
693
BIO_set_retry_read( b );
701
tlso_bio_write( BIO *b, const char *buf, int len )
706
if ( buf == NULL || len <= 0 ) return 0;
708
p = (struct tls_data *)b->ptr;
710
if ( p == NULL || p->sbiod == NULL ) {
714
ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
716
BIO_clear_retry_flags( b );
718
int err = sock_errno();
719
if ( err == EAGAIN || err == EWOULDBLOCK ) {
720
BIO_set_retry_write( b );
728
tlso_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
730
if ( cmd == BIO_CTRL_FLUSH ) {
731
/* The OpenSSL library needs this */
738
tlso_bio_gets( BIO *b, char *buf, int len )
744
tlso_bio_puts( BIO *b, const char *str )
746
return tlso_bio_write( b, str, strlen( str ) );
749
static BIO_METHOD tlso_bio_method =
751
( 100 | 0x400 ), /* it's a source/sink BIO */
763
tlso_sb_setup( Sockbuf_IO_Desc *sbiod, void *arg )
768
assert( sbiod != NULL );
770
p = LBER_MALLOC( sizeof( *p ) );
777
bio = BIO_new( &tlso_bio_method );
778
bio->ptr = (void *)p;
779
SSL_set_bio( p->session, bio, bio );
780
sbiod->sbiod_pvt = p;
785
tlso_sb_remove( Sockbuf_IO_Desc *sbiod )
789
assert( sbiod != NULL );
790
assert( sbiod->sbiod_pvt != NULL );
792
p = (struct tls_data *)sbiod->sbiod_pvt;
793
SSL_free( p->session );
794
LBER_FREE( sbiod->sbiod_pvt );
795
sbiod->sbiod_pvt = NULL;
800
tlso_sb_close( Sockbuf_IO_Desc *sbiod )
804
assert( sbiod != NULL );
805
assert( sbiod->sbiod_pvt != NULL );
807
p = (struct tls_data *)sbiod->sbiod_pvt;
808
SSL_shutdown( p->session );
813
tlso_sb_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
817
assert( sbiod != NULL );
818
assert( sbiod->sbiod_pvt != NULL );
820
p = (struct tls_data *)sbiod->sbiod_pvt;
822
if ( opt == LBER_SB_OPT_GET_SSL ) {
823
*((tlso_session **)arg) = p->session;
826
} else if ( opt == LBER_SB_OPT_DATA_READY ) {
827
if( SSL_pending( p->session ) > 0 ) {
832
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
836
tlso_sb_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
842
assert( sbiod != NULL );
843
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
845
p = (struct tls_data *)sbiod->sbiod_pvt;
847
ret = SSL_read( p->session, (char *)buf, len );
849
errno = WSAGetLastError();
851
err = SSL_get_error( p->session, ret );
852
if (err == SSL_ERROR_WANT_READ ) {
853
sbiod->sbiod_sb->sb_trans_needs_read = 1;
854
sock_errset(EWOULDBLOCK);
857
sbiod->sbiod_sb->sb_trans_needs_read = 0;
862
tlso_sb_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
868
assert( sbiod != NULL );
869
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
871
p = (struct tls_data *)sbiod->sbiod_pvt;
873
ret = SSL_write( p->session, (char *)buf, len );
875
errno = WSAGetLastError();
877
err = SSL_get_error( p->session, ret );
878
if (err == SSL_ERROR_WANT_WRITE ) {
879
sbiod->sbiod_sb->sb_trans_needs_write = 1;
880
sock_errset(EWOULDBLOCK);
883
sbiod->sbiod_sb->sb_trans_needs_write = 0;
888
static Sockbuf_IO tlso_sbio =
890
tlso_sb_setup, /* sbi_setup */
891
tlso_sb_remove, /* sbi_remove */
892
tlso_sb_ctrl, /* sbi_ctrl */
893
tlso_sb_read, /* sbi_read */
894
tlso_sb_write, /* sbi_write */
895
tlso_sb_close /* sbi_close */
898
/* Derived from openssl/apps/s_cb.c */
900
tlso_info_cb( const SSL *ssl, int where, int ret )
904
char *state = (char *) SSL_state_string_long( (SSL *)ssl );
906
w = where & ~SSL_ST_MASK;
907
if ( w & SSL_ST_CONNECT ) {
909
} else if ( w & SSL_ST_ACCEPT ) {
917
state = LDAP_STRDUP( state );
921
if ( where & SSL_CB_LOOP ) {
922
Debug( LDAP_DEBUG_TRACE,
923
"TLS trace: %s:%s\n",
926
} else if ( where & SSL_CB_ALERT ) {
927
char *atype = (char *) SSL_alert_type_string_long( ret );
928
char *adesc = (char *) SSL_alert_desc_string_long( ret );
929
op = ( where & SSL_CB_READ ) ? "read" : "write";
932
atype = LDAP_STRDUP( atype );
936
adesc = LDAP_STRDUP( adesc );
940
Debug( LDAP_DEBUG_TRACE,
941
"TLS trace: SSL3 alert %s:%s:%s\n",
944
if ( atype ) LDAP_FREE( atype );
945
if ( adesc ) LDAP_FREE( adesc );
947
} else if ( where & SSL_CB_EXIT ) {
949
Debug( LDAP_DEBUG_TRACE,
950
"TLS trace: %s:failed in %s\n",
952
} else if ( ret < 0 ) {
953
Debug( LDAP_DEBUG_TRACE,
954
"TLS trace: %s:error in %s\n",
959
if ( state ) LDAP_FREE( state );
964
tlso_verify_cb( int ok, X509_STORE_CTX *ctx )
973
char *certerr = NULL;
975
cert = X509_STORE_CTX_get_current_cert( ctx );
976
errnum = X509_STORE_CTX_get_error( ctx );
977
errdepth = X509_STORE_CTX_get_error_depth( ctx );
980
* X509_get_*_name return pointers to the internal copies of
981
* those things requested. So do not free them.
983
subject = X509_get_subject_name( cert );
984
issuer = X509_get_issuer_name( cert );
985
/* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
986
sname = X509_NAME_oneline( subject, NULL, 0 );
987
iname = X509_NAME_oneline( issuer, NULL, 0 );
988
if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
990
if ( sname ) __etoa( sname );
991
if ( iname ) __etoa( iname );
993
certerr = LDAP_STRDUP( certerr );
997
Debug( LDAP_DEBUG_TRACE,
998
"TLS certificate verification: depth: %d, err: %d, subject: %s,",
1000
sname ? sname : "-unknown-" );
1001
Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
1003
Debug( LDAP_DEBUG_ANY,
1004
"TLS certificate verification: Error, %s\n",
1008
CRYPTO_free ( sname );
1010
CRYPTO_free ( iname );
1012
if ( certerr ) LDAP_FREE( certerr );
1018
tlso_verify_ok( int ok, X509_STORE_CTX *ctx )
1020
(void) tlso_verify_cb( ok, ctx );
1024
/* Inspired by ERR_print_errors in OpenSSL */
1026
tlso_report_error( void )
1033
while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
1034
ERR_error_string_n( l, buf, sizeof( buf ) );
1037
file = LDAP_STRDUP( file );
1038
__etoa( (char *)file );
1042
Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
1045
if ( file ) LDAP_FREE( (void *)file );
1051
tlso_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
1055
/* FIXME: Pregenerate the key on startup */
1056
/* FIXME: Who frees the key? */
1057
tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
1060
Debug( LDAP_DEBUG_ANY,
1061
"TLS: Failed to generate temporary %d-bit %s RSA key\n",
1062
key_length, is_export ? "export" : "domestic", 0 );
1069
tlso_seed_PRNG( const char *randfile )
1071
#ifndef URANDOM_DEVICE
1072
/* no /dev/urandom (or equiv) */
1074
char buffer[MAXPATHLEN];
1076
if (randfile == NULL) {
1077
/* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
1078
* If $HOME is not set or buffer too small to hold the pathname,
1079
* an error occurs. - From RAND_file_name() man page.
1080
* The fact is that when $HOME is NULL, .rnd is used.
1082
randfile = RAND_file_name( buffer, sizeof( buffer ) );
1084
} else if (RAND_egd(randfile) > 0) {
1089
if (randfile == NULL) {
1090
Debug( LDAP_DEBUG_ANY,
1091
"TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
1096
total = RAND_load_file(randfile, -1);
1098
if (RAND_status() == 0) {
1099
Debug( LDAP_DEBUG_ANY,
1100
"TLS: PRNG not been seeded with enough data\n",
1105
/* assume if there was enough bits to seed that it's okay
1106
* to write derived bits to the file
1108
RAND_write_file(randfile);
1122
/* From the OpenSSL 0.9.7 distro */
1123
static const char tlso_dhpem512[] =
1124
"-----BEGIN DH PARAMETERS-----\n\
1125
MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
1126
a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
1127
-----END DH PARAMETERS-----\n";
1129
static const char tlso_dhpem1024[] =
1130
"-----BEGIN DH PARAMETERS-----\n\
1131
MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
1132
/Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
1133
/mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
1134
-----END DH PARAMETERS-----\n";
1136
static const char tlso_dhpem2048[] =
1137
"-----BEGIN DH PARAMETERS-----\n\
1138
MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
1139
AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
1140
z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
1141
pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
1142
aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
1143
Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
1144
-----END DH PARAMETERS-----\n";
1146
static const char tlso_dhpem4096[] =
1147
"-----BEGIN DH PARAMETERS-----\n\
1148
MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
1149
vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
1150
TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
1151
bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
1152
rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
1153
EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
1154
bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
1155
W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
1156
ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
1157
NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
1158
jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
1159
-----END DH PARAMETERS-----\n";
1161
static const struct dhinfo tlso_dhpem[] = {
1162
{ 512, tlso_dhpem512, sizeof(tlso_dhpem512) },
1163
{ 1024, tlso_dhpem1024, sizeof(tlso_dhpem1024) },
1164
{ 2048, tlso_dhpem2048, sizeof(tlso_dhpem2048) },
1165
{ 4096, tlso_dhpem4096, sizeof(tlso_dhpem4096) },
1170
tlso_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
1172
struct dhplist *p = NULL;
1177
/* Do we have params of this length already? */
1178
#ifdef LDAP_R_COMPILE
1179
ldap_pvt_thread_mutex_lock( &tlso_dh_mutex );
1181
for ( p = tlso_dhparams; p; p=p->next ) {
1182
if ( p->keylength == key_length ) {
1183
#ifdef LDAP_R_COMPILE
1184
ldap_pvt_thread_mutex_unlock( &tlso_dh_mutex );
1190
/* No - check for hardcoded params */
1192
for (i=0; tlso_dhpem[i].keylength; i++) {
1193
if ( tlso_dhpem[i].keylength == key_length ) {
1194
b = BIO_new_mem_buf( (char *)tlso_dhpem[i].pem, tlso_dhpem[i].size );
1200
dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
1204
/* Generating on the fly is expensive/slow... */
1206
dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
1209
p = LDAP_MALLOC( sizeof(struct dhplist) );
1211
p->keylength = key_length;
1213
p->next = tlso_dhparams;
1218
#ifdef LDAP_R_COMPILE
1219
ldap_pvt_thread_mutex_unlock( &tlso_dh_mutex );
1224
tls_impl ldap_int_tls_impl = {
1236
tlso_session_connect,
1237
tlso_session_accept,
1238
tlso_session_upflags,
1239
tlso_session_errmsg,
1241
tlso_session_peer_dn,
1242
tlso_session_chkhost,
1243
tlso_session_strength,
1247
#ifdef LDAP_R_COMPILE
1256
#endif /* HAVE_OPENSSL */
added
removed
libraries/libldap/tls_o.c
