use asynchronous StartTLS

diff --git a/servers/slapd/back-ldap/bind.c b/servers/slapd/back-ldap/bind.c
index 12ea18a8e0479ee98f4e98d3111156604a21aef2..b309af20e674e55ea0822c339cc6592ee8083323 100644 (file)
--- a/servers/slapd/back-ldap/bind.c
+++ b/servers/slapd/back-ldap/bind.c
@@ -241,22 +241,27 @@ ldap_back_prepare_conn( struct ldapconn **lcp, Operation *op, SlapReply *rs, lda
         */
        ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&vers );
 
-       /* automatically chase referrals ("chase-referrals"/"dont-chase-referrals" statement) */
+       /* automatically chase referrals ("[dont-]chase-referrals" statement) */
        if ( LDAP_BACK_CHASE_REFERRALS( li ) ) {
                ldap_set_option( ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON );
        }
 
 #ifdef HAVE_TLS
-       /* start TLS ("start-tls"/"try-start-tls" statements) */
+       /* start TLS ("tls-[try-]{start,propagate}" statements) */
        if ( ( LDAP_BACK_USE_TLS( li ) || ( op->o_conn->c_is_tls && LDAP_BACK_PROPAGATE_TLS( li ) ) )
-                               && !ldap_is_ldaps_url( li->url ) ) {
-#if 0
-               int             rc, msgid;
-               LDAPMessage     *res;
-               int             retries = 1;
+                               && !ldap_is_ldaps_url( li->url ) )
+       {
+#if 1
+               /*
+                * use asynchronous StartTLS
+                * in case, chase referral (not implemented yet)
+                */
+               int             msgid;
 
-               rc = ldap_start_tls( ld, NULL, NULL, &msgid );
-               if ( rc == LDAP_SUCCESS ) {
+               rs->sr_err = ldap_start_tls( ld, NULL, NULL, &msgid );
+               if ( rs->sr_err == LDAP_SUCCESS ) {
+                       LDAPMessage     *res = NULL;
+                       int             rc, retries = 1;
                        struct timeval  tv = { 0, 0 };
 
 retry:;
@@ -273,32 +278,49 @@ retry:;
                                }
                                rs->sr_err = LDAP_OTHER;
 
-                       } else {
-                               if ( rc == LDAP_RES_EXTENDED ) {
-                                       rc = ldap_parse_result( ld, res,
-                                               &rs->sr_err, NULL, NULL, NULL, NULL, 1 );
-                                       if ( rc != LDAP_SUCCESS ) {
-                                               rs->sr_err = rc;
+                       } else if ( rc == LDAP_RES_EXTENDED ) {
+                               struct berval   *data = NULL;
 
+                               rs->sr_err = ldap_parse_extended_result( ld, res,
+                                               NULL, &data, 0 );
+                               if ( rs->sr_err == LDAP_SUCCESS ) {
+                                       rs->sr_err = ldap_result2error( ld, res, 1 );
+                                       res = NULL;
+                                       
                                        /* FIXME: in case a referral 
                                         * is returned, should we try
                                         * using it instead of the 
                                         * configured URI? */
+                                       if ( rs->sr_err == LDAP_SUCCESS ) {
+                                               ldap_install_tls( ld );
+
                                        } else if ( rs->sr_err == LDAP_REFERRAL ) {
                                                rs->sr_err = LDAP_OTHER;
                                                rs->sr_text = "unwilling to chase referral returned by Start TLS exop";
                                        }
 
-                               } else {
-                                       ldap_msgfree( res );
-                                       rs->sr_err = LDAP_OTHER;
+                                       if ( data ) {
+                                               if ( data->bv_val ) {
+                                                       ber_memfree( data->bv_val );
+                                               }
+                                               ber_memfree( data );
+                                       }
                                }
+
+                       } else {
+                               rs->sr_err = LDAP_OTHER;
+                       }
+
+                       if ( res != NULL ) {
+                               ldap_msgfree( res );
                        }
                }
 #else
-
-#endif
+               /*
+                * use synchronous StartTLS
+                */
                rs->sr_err = ldap_start_tls_s( ld, NULL, NULL );
+#endif
 
                /* if StartTLS is requested, only attempt it if the URL
                 * is not "ldaps://"; this may occur not only in case
@@ -311,7 +333,7 @@ retry:;
                        goto error_return;
                }
        }
-#endif
+#endif /* HAVE_TLS */
 
        if ( *lcp == NULL ) {
                *lcp = (struct ldapconn *)ch_malloc( sizeof( struct ldapconn ) );