#include "portable.h"
-#ifdef HAVE_TLS
-
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/string.h>
#include <ac/time.h>
#include <ac/unistd.h>
+#include <ac/param.h>
#include "ldap-int.h"
+#ifdef HAVE_TLS
+
#ifdef LDAP_R_COMPILE
#include <ldap_pvt_thread.h>
#endif
#include <openssl/ssl.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
+#include <openssl/rand.h>
#elif defined( HAVE_SSL_H )
#include <ssl.h>
#endif
static char *tls_opt_cacertdir = NULL;
static int tls_opt_require_cert = 0;
static char *tls_opt_ciphersuite = NULL;
+static char *tls_opt_randfile = NULL;
-#define HAS_TLS( sb ) ((sb)->sb_io==&tls_io)
+#define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
+ (void *)&ldap_pvt_sockbuf_io_tls )
-static int tls_setup( Sockbuf *sb, void *arg );
-static int tls_remove( Sockbuf *sb );
-static ber_slen_t tls_read( Sockbuf *sb, void *buf, ber_len_t len );
-static ber_slen_t tls_write( Sockbuf *sb, void *buf, ber_len_t len );
-static int tls_close( Sockbuf *sb );
static void tls_report_error( void );
-static Sockbuf_IO tls_io=
-{
- tls_setup,
- tls_remove,
- tls_read,
- tls_write,
- tls_close
-};
-
static void tls_info_cb( SSL *ssl, int where, int ret );
static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
static SSL_CTX *tls_def_ctx = NULL;
+static int tls_seed_PRNG( const char *randfile );
+
#ifdef LDAP_R_COMPILE
/*
* provide mutexes for the SSLeay library.
static void tls_locking_cb( int mode, int type, const char *file, int line )
{
if ( mode & CRYPTO_LOCK ) {
- ldap_pvt_thread_mutex_lock( tls_mutexes+type );
+ ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
} else {
- ldap_pvt_thread_mutex_unlock( tls_mutexes+type );
+ ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
}
}
int i;
for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
- ldap_pvt_thread_mutex_init( tls_mutexes+i );
+ ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
}
CRYPTO_set_locking_callback( tls_locking_cb );
/* FIXME: the thread id should be added somehow... */
#endif /* LDAP_R_COMPILE */
/*
- * Initialize tls system. Should be called only once.
+ * Initialize TLS subsystem. Should be called only once.
*/
int
ldap_pvt_tls_init( void )
{
static int tls_initialized = 0;
- if ( tls_initialized )
- return 0;
+ if ( tls_initialized ) return 0;
tls_initialized = 1;
+
+ (void) tls_seed_PRNG( tls_opt_randfile );
+
#ifdef LDAP_R_COMPILE
tls_init_threads();
#endif
+
SSL_load_error_strings();
SSLeay_add_ssl_algorithms();
+
/* FIXME: mod_ssl does this */
X509V3_add_standard_extensions();
return 0;
if ( tls_opt_trace ) {
SSL_CTX_set_info_callback( tls_def_ctx, tls_info_cb );
}
- SSL_CTX_set_verify( tls_def_ctx, (tls_opt_require_cert) ?
+ SSL_CTX_set_verify( tls_def_ctx,
+ tls_opt_require_cert ?
(SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT) :
- SSL_VERIFY_PEER, tls_verify_cb );
+ SSL_VERIFY_NONE,
+ tls_verify_cb );
SSL_CTX_set_tmp_rsa_callback( tls_def_ctx, tls_tmp_rsa_cb );
/* SSL_CTX_set_tmp_dh_callback( tls_def_ctx, tls_tmp_dh_cb ); */
}
}
static SSL *
-alloc_handle( Sockbuf *sb, void *ctx_arg )
+alloc_handle( void *ctx_arg )
{
- int err;
SSL_CTX *ctx;
SSL *ssl;
if ( tls_opt_trace ) {
SSL_set_info_callback( ssl, tls_info_cb );
}
- sb->sb_iodata = ssl;
- SSL_set_fd( ssl, ber_pvt_sb_get_desc( sb ) );
return ssl;
}
return 0;
}
+/*
+ * TLS support for LBER Sockbufs
+ */
+
+struct tls_data {
+ SSL *ssl;
+ Sockbuf_IO_Desc *sbiod;
+};
+
+extern BIO_METHOD ldap_pvt_sb_bio_method;
+
+static int
+sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
+{
+ struct tls_data *p;
+ BIO *bio;
+
+ assert( sbiod != NULL );
+
+ p = LBER_MALLOC( sizeof( *p ) );
+ if ( p == NULL )
+ return -1;
+
+ p->ssl = (SSL *)arg;
+ p->sbiod = sbiod;
+ bio = BIO_new( &ldap_pvt_sb_bio_method );
+ bio->ptr = (void *)p;
+ SSL_set_bio( p->ssl, bio, bio );
+ sbiod->sbiod_pvt = p;
+ return 0;
+}
+
+static int
+sb_tls_remove( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ SSL_free( p->ssl );
+ LBER_FREE( sbiod->sbiod_pvt );
+ sbiod->sbiod_pvt = NULL;
+ return 0;
+}
+
+static int
+sb_tls_close( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ SSL_shutdown( p->ssl );
+ return 0;
+}
+
+static int
+sb_tls_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ if ( opt == LBER_SB_OPT_GET_SSL ) {
+ *((SSL **)arg) = p->ssl;
+ return 1;
+
+ } else if ( opt == LBER_SB_OPT_DATA_READY ) {
+ if( SSL_pending( p->ssl ) > 0 ) {
+ return 1;
+ }
+ }
+
+ return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
+}
+
+static ber_slen_t
+sb_tls_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = SSL_read( p->ssl, (char *)buf, len );
+#ifdef HAVE_WINSOCK
+ errno = WSAGetLastError();
+#endif
+ err = SSL_get_error( p->ssl, ret );
+ if (err == SSL_ERROR_WANT_READ ) {
+ sbiod->sbiod_sb->sb_trans_needs_read = 1;
+#ifdef WIN32
+ errno = EWOULDBLOCK;
+#endif
+ }
+ else
+ sbiod->sbiod_sb->sb_trans_needs_read = 0;
+ return ret;
+}
+
+static ber_slen_t
+sb_tls_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = SSL_write( p->ssl, (char *)buf, len );
+#ifdef HAVE_WINSOCK
+ errno = WSAGetLastError();
+#endif
+ err = SSL_get_error( p->ssl, ret );
+ if (err == SSL_ERROR_WANT_WRITE ) {
+ sbiod->sbiod_sb->sb_trans_needs_write = 1;
+#ifdef WIN32
+ errno = EWOULDBLOCK;
+#endif
+ }
+ else
+ sbiod->sbiod_sb->sb_trans_needs_write = 0;
+ return ret;
+}
+
+Sockbuf_IO ldap_pvt_sockbuf_io_tls =
+{
+ sb_tls_setup, /* sbi_setup */
+ sb_tls_remove, /* sbi_remove */
+ sb_tls_ctrl, /* sbi_ctrl */
+ sb_tls_read, /* sbi_read */
+ sb_tls_write, /* sbi_write */
+ sb_tls_close /* sbi_close */
+};
+
+static int
+sb_tls_bio_create( BIO *b ) {
+ b->init = 1;
+ b->num = 0;
+ b->ptr = NULL;
+ b->flags = 0;
+ return 1;
+}
+
+static int
+sb_tls_bio_destroy( BIO *b )
+{
+ if ( b == NULL )
+ return 0;
+
+ b->ptr = NULL; /* sb_tls_remove() will free it */
+ b->init = 0;
+ b->flags = 0;
+ return 1;
+}
+
+static int
+sb_tls_bio_read( BIO *b, char *buf, int len )
+{
+ struct tls_data *p;
+ int ret;
+
+ if ( buf == NULL || len <= 0 )
+ return 0;
+
+ p = (struct tls_data *)b->ptr;
+
+ if ( p == NULL || p->sbiod == NULL )
+ return 0;
+
+ ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
+
+ BIO_clear_retry_flags( b );
+ if ( ret < 0 && errno == EWOULDBLOCK )
+ BIO_set_retry_read( b );
+
+ return ret;
+}
+
+static int
+sb_tls_bio_write( BIO *b, char *buf, int len )
+{
+ struct tls_data *p;
+ int ret;
+
+ if ( buf == NULL || len <= 0 )
+ return 0;
+
+ p = (struct tls_data *)b->ptr;
+
+ if ( p == NULL || p->sbiod == NULL )
+ return 0;
+
+ ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, buf, len );
+
+ BIO_clear_retry_flags( b );
+ if ( ret < 0 && errno == EWOULDBLOCK )
+ BIO_set_retry_write( b );
+
+ return ret;
+}
+
+static long
+sb_tls_bio_ctrl( BIO *b, int cmd, long num, char *ptr )
+{
+ if ( cmd == BIO_CTRL_FLUSH ) {
+ /* The OpenSSL library needs this */
+ return 1;
+ }
+ return 0;
+}
+
+static int
+sb_tls_bio_gets( BIO *b, char *buf, int len )
+{
+ return -1;
+}
+
+static int
+sb_tls_bio_puts( BIO *b, char *str )
+{
+ return sb_tls_bio_write( b, str, strlen( str ) );
+}
+
+BIO_METHOD ldap_pvt_sb_bio_method =
+{
+ ( 100 | 0x400 ), /* it's a source/sink BIO */
+ "sockbuf glue",
+ sb_tls_bio_write,
+ sb_tls_bio_read,
+ sb_tls_bio_puts,
+ sb_tls_bio_gets,
+ sb_tls_bio_ctrl,
+ sb_tls_bio_create,
+ sb_tls_bio_destroy
+};
+
/*
* Call this to do a TLS connect on a sockbuf. ctx_arg can be
* a SSL_CTX * or NULL, in which case the default ctx is used.
SSL *ssl;
if ( HAS_TLS( sb ) ) {
- ssl = (SSL *) sb->sb_iodata;
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
} else {
- ssl = alloc_handle( sb, ctx_arg );
+ ssl = alloc_handle( ctx_arg );
if ( ssl == NULL )
return -1;
- ber_pvt_sb_clear_io( sb );
- ber_pvt_sb_set_io( sb, &tls_io, (void *)ssl );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
+#endif
+ ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_tls,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
}
err = SSL_connect( ssl );
return 1;
if ((err = ERR_peek_error())) {
char buf[256];
- ld->ld_error = ldap_strdup(ERR_error_string(err, buf));
+ ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
}
Debug( LDAP_DEBUG_ANY,"TLS: can't connect.\n",0,0,0);
- ber_pvt_sb_clear_io( sb );
- ber_pvt_sb_set_io( sb, &ber_pvt_sb_io_tcp, NULL );
+ ber_sockbuf_remove_io( sb, &ldap_pvt_sockbuf_io_tls,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#endif
return -1;
}
return 0;
SSL *ssl;
if ( HAS_TLS( sb ) ) {
- ssl = (SSL *) sb->sb_iodata;
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
} else {
- ssl = alloc_handle( sb, ctx_arg );
+ ssl = alloc_handle( ctx_arg );
if ( ssl == NULL )
return -1;
- ber_pvt_sb_clear_io( sb );
- ber_pvt_sb_set_io( sb, &tls_io, (void *)ssl );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
+#endif
+ ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_tls,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
}
err = SSL_accept( ssl );
return 1;
Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
tls_report_error();
- ber_pvt_sb_clear_io( sb );
- ber_pvt_sb_set_io( sb, &ber_pvt_sb_io_tcp, NULL );
+ ber_sockbuf_remove_io( sb, &ldap_pvt_sockbuf_io_tls,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#endif
return -1;
}
+
return 0;
}
void *
ldap_pvt_tls_sb_handle( Sockbuf *sb )
{
- if (HAS_TLS( sb ))
- return sb->sb_iodata;
- else
- return NULL;
+ void *p;
+
+ if (HAS_TLS( sb )) {
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
+ return p;
+ }
+
+ return NULL;
}
void *
ldap_pvt_tls_get_handle( LDAP *ld )
{
- return ldap_pvt_tls_sb_handle(&ld->ld_sb);
+ return ldap_pvt_tls_sb_handle( ld->ld_sb );
}
-const char *
-ldap_pvt_tls_get_peer( LDAP *ld )
+int
+ldap_pvt_tls_get_strength( void *s )
{
- return NULL;
+ SSL_CIPHER *c;
+
+ c = SSL_get_current_cipher((SSL *)s);
+ return SSL_CIPHER_get_bits(c, NULL);
+}
+
+
+char *
+ldap_pvt_tls_get_peer( void *s )
+{
+ X509 *x;
+ X509_NAME *xn;
+ char buf[2048], *p;
+
+ x = SSL_get_peer_certificate((SSL *)s);
+
+ if (!x)
+ return NULL;
+
+ xn = X509_get_subject_name(x);
+ p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
+ X509_free(x);
+ return p;
+}
+
+char *
+ldap_pvt_tls_get_peer_dn( void *s )
+{
+ X509 *x;
+ X509_NAME *xn;
+ char buf[2048], *p, *dn;
+
+ x = SSL_get_peer_certificate((SSL *)s);
+
+ if (!x) return NULL;
+
+ xn = X509_get_subject_name(x);
+ p = X509_NAME_oneline(xn, buf, sizeof(buf));
+
+ dn = ldap_dcedn2dn( p );
+
+ X509_free(x);
+ return dn;
+}
+
+char *
+ldap_pvt_tls_get_peer_hostname( void *s )
+{
+ X509 *x;
+ X509_NAME *xn;
+ char buf[2048], *p;
+ int ret;
+
+ x = SSL_get_peer_certificate((SSL *)s);
+
+ if (!x)
+ return NULL;
+
+ xn = X509_get_subject_name(x);
+
+ ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
+ if( ret == -1 ) {
+ X509_free(x);
+ return NULL;
+ }
+
+ p = LDAP_STRDUP(buf);
+ X509_free(x);
+ return p;
}
const char *
-ldap_pvt_tls_get_peer_issuer( LDAP *ld )
+ldap_pvt_tls_get_peer_issuer( void *s )
{
+#if 0 /* currently unused; see ldap_pvt_tls_get_peer() if needed */
+ X509 *x;
+ X509_NAME *xn;
+ char buf[2048], *p;
+
+ x = SSL_get_peer_certificate((SSL *)s);
+
+ if (!x)
+ return NULL;
+
+ xn = X509_get_issuer_name(x);
+ p = LDAP_STRDUP(X509_NAME_oneline(xn, buf, sizeof(buf)));
+ X509_free(x);
+ return p;
+#else
return NULL;
+#endif
}
int
-ldap_pvt_tls_config( struct ldapoptions *lo, int option, const char *arg )
+ldap_int_tls_config( struct ldapoptions *lo, int option, const char *arg )
{
int i;
case LDAP_OPT_X_TLS_CACERTDIR:
case LDAP_OPT_X_TLS_CERTFILE:
case LDAP_OPT_X_TLS_KEYFILE:
+ case LDAP_OPT_X_TLS_RANDOM_FILE:
return ldap_pvt_tls_set_option( NULL, option, (void *) arg );
case LDAP_OPT_X_TLS_REQUIRE_CERT:
i = ( ( strcasecmp( arg, "on" ) == 0 ) ||
if (i >= 0)
return ldap_pvt_tls_set_option( lo, option, &i );
return -1;
- default:
- return -1;
}
+
+ return -1;
}
int
case LDAP_OPT_X_TLS_REQUIRE_CERT:
*(int *)arg = tls_opt_require_cert;
break;
+ case LDAP_OPT_X_TLS_RANDOM_FILE:
+ *(char **)arg = tls_opt_randfile;
+ break;
default:
return -1;
}
switch( option ) {
case LDAP_OPT_X_TLS_CACERTFILE:
- if ( tls_opt_cacertfile ) free( tls_opt_cacertfile );
+ if ( tls_opt_cacertfile ) LDAP_FREE( tls_opt_cacertfile );
tls_opt_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
break;
case LDAP_OPT_X_TLS_CACERTDIR:
- if ( tls_opt_cacertdir ) free( tls_opt_cacertdir );
+ if ( tls_opt_cacertdir ) LDAP_FREE( tls_opt_cacertdir );
tls_opt_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
break;
case LDAP_OPT_X_TLS_CERTFILE:
- if ( tls_opt_certfile ) free( tls_opt_certfile );
+ if ( tls_opt_certfile ) LDAP_FREE( tls_opt_certfile );
tls_opt_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
break;
case LDAP_OPT_X_TLS_KEYFILE:
- if ( tls_opt_keyfile ) free( tls_opt_keyfile );
+ if ( tls_opt_keyfile ) LDAP_FREE( tls_opt_keyfile );
tls_opt_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
break;
case LDAP_OPT_X_TLS_REQUIRE_CERT:
tls_opt_require_cert = * (int *) arg;
break;
case LDAP_OPT_X_TLS_CIPHER_SUITE:
- if ( tls_opt_ciphersuite ) free( tls_opt_ciphersuite );
+ if ( tls_opt_ciphersuite ) LDAP_FREE( tls_opt_ciphersuite );
tls_opt_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
break;
+ case LDAP_OPT_X_TLS_RANDOM_FILE:
+ if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
+ tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ break;
default:
return -1;
}
int
ldap_pvt_tls_start ( LDAP *ld, Sockbuf *sb, void *ctx_arg )
{
+ char *peer_cert_cn, *peer_hostname;
+ void *ssl;
+
+ (void) ldap_pvt_tls_init();
+
/*
* Fortunately, the lib uses blocking io...
*/
return LDAP_CONNECT_ERROR;
}
- /* FIXME: hostname of server must be compared with name in
- * certificate....
+ ssl = (void *) ldap_pvt_tls_sb_handle( sb );
+ /*
+ * compare hostname of server with name in certificate
*/
+ peer_cert_cn = ldap_pvt_tls_get_peer_hostname( ssl );
+ if ( !peer_cert_cn ) {
+ /* could not get hostname from peer certificate */
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+ return LDAP_LOCAL_ERROR;
+ }
+
+ peer_hostname = ldap_host_connected_to( sb );
+ if ( !peer_hostname ) {
+ /* could not lookup hostname */
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to reverse lookup peer hostname.\n",
+ 0, 0, 0 );
+ LDAP_FREE( peer_cert_cn );
+ return LDAP_LOCAL_ERROR;
+ }
- return LDAP_SUCCESS;
-}
-
-
-static int
-tls_setup( Sockbuf *sb, void *arg )
-{
- sb->sb_iodata = arg;
- return 0;
-}
-
-static int
-tls_remove( Sockbuf *sb )
-{
- SSL_free( (SSL *) sb->sb_iodata );
- return 0;
-}
+ if ( strcasecmp(peer_hostname, peer_cert_cn) != 0 ) {
+ Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
+ "common name in certificate (%s).",
+ peer_hostname, peer_cert_cn, 0 );
+ LDAP_FREE( peer_cert_cn );
+ LDAP_FREE( peer_hostname );
+ return LDAP_CONNECT_ERROR;
-static ber_slen_t
-tls_write( Sockbuf *sb, void *buf, ber_len_t sz )
-{
- int ret = SSL_write( (SSL *)sb->sb_iodata, buf, sz );
+ } else {
+ LDAP_FREE( peer_cert_cn );
+ LDAP_FREE( peer_hostname );
+ }
-#ifdef HAVE_WINSOCK
- errno = WSAGetLastError();
-#endif
- update_flags(sb, (SSL *)sb->sb_iodata, ret );
-#ifdef WIN32
- if (sb->sb_trans_needs_write)
- errno = EWOULDBLOCK;
-#endif
- return ret;
-}
+ /*
+ * set SASL properties to TLS ssf and authid
+ */
+ {
+ const char *authid;
+ ber_len_t ssf;
-static ber_slen_t
-tls_read( Sockbuf *sb, void *buf, ber_len_t sz )
-{
- int ret = SSL_read( (SSL *)sb->sb_iodata, buf, sz );
+ /* we need to let SASL know */
+ ssf = ldap_pvt_tls_get_strength( ssl );
+ authid = ldap_pvt_tls_get_peer( ssl );
-#ifdef HAVE_WINSOCK
- errno = WSAGetLastError();
-#endif
- update_flags(sb, (SSL *)sb->sb_iodata, ret );
-#ifdef WIN32
- if (sb->sb_trans_needs_read)
- errno = EWOULDBLOCK;
-#endif
- return ret;
-}
+ (void) ldap_int_sasl_external( ld, authid, ssf );
+ }
-static int
-tls_close( Sockbuf *sb )
-{
- tcp_close( ber_pvt_sb_get_desc( sb ) );
- return 0;
+ return LDAP_SUCCESS;
}
/* Derived from openssl/apps/s_cb.c */
tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
if ( !tmp_rsa ) {
- Debug( LDAP_DEBUG_ANY, "TLS: Failed to generate temporary %d-bit %s RSA key\n",
- key_length, is_export ? "export" : "domestic", 0 );
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: Failed to generate temporary %d-bit %s RSA key\n",
+ key_length, is_export ? "export" : "domestic", 0 );
return NULL;
}
return tmp_rsa;
}
+static int
+tls_seed_PRNG( const char *randfile )
+{
+#ifndef URANDOM_DEVICE
+ /* no /dev/urandom (or equiv) */
+ long total=0;
+ char buffer[MAXPATHLEN];
+
+ if (randfile == NULL) {
+ /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
+ * If $HOME is not set or buffer too small to hold the pathname,
+ * an error occurs. - From RAND_file_name() man page.
+ * The fact is that when $HOME is NULL, .rnd is used.
+ */
+ randfile = RAND_file_name( buffer, sizeof( buffer ) );
+
+ } else if (RAND_egd(randfile) > 0) {
+ /* EGD socket */
+ return 0;
+ }
+
+ if (randfile == NULL) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
+ 0, 0, 0);
+ return -1;
+ }
+
+ total = RAND_load_file(randfile, -1);
+
+ if (RAND_status() == 0) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: PRNG not been seeded with enough data\n",
+ 0, 0, 0);
+ return -1;
+ }
+
+ /* assume if there was enough bits to seed that it's okay
+ * to write derived bits to the file
+ */
+ RAND_write_file(randfile);
+
+#endif
+
+ return 0;
+}
+
#if 0
static DH *
tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
return NULL;
}
#endif
+#endif
+int
+ldap_start_tls_s ( LDAP *ld,
+ LDAPControl **serverctrls,
+ LDAPControl **clientctrls )
+{
+#ifdef HAVE_TLS
+ int rc;
+ char *rspoid = NULL;
+ struct berval *rspdata = NULL;
+
+ /* XXYYZ: this initiates operaton only on default connection! */
+
+ if ( ldap_pvt_tls_inplace( ld->ld_sb ) != 0 ) {
+ return LDAP_LOCAL_ERROR;
+ }
+
+ rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
+ NULL, serverctrls, clientctrls, &rspoid, &rspdata );
+ if ( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+
+ if ( rspoid != NULL ) {
+ LDAP_FREE(rspoid);
+ }
+
+ if ( rspdata != NULL ) {
+ ber_bvfree( rspdata );
+ }
+
+ rc = ldap_pvt_tls_start( ld, ld->ld_sb, ld->ld_options.ldo_tls_ctx );
+ return rc;
#else
-static int dummy;
+ return LDAP_NOT_SUPPORTED;
#endif
+}
+
projects / openldap / blobdiff