TLS: Enable ECDHE on OpenSSL, just the NIST P-256 curve. Bug 1397

[exim.git] / src / src / transports / smtp.c

diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c
index 986fcee6fd0b883396a35cb9bdafed084b7a19e3..48bab9599e90638eea213a8b4c5ac4aecd511918 100644 (file)
--- a/src/src/transports/smtp.c
+++ b/src/src/transports/smtp.c
@@ -241,8 +241,7 @@ smtp_transport_options_block smtp_transport_option_defaults = {
   FALSE,               /* gethostbyname */
   TRUE,                /* dns_qualify_single */
   FALSE,               /* dns_search_parents */
-  NULL,                /* dnssec_request_domains */
-  NULL,                /* dnssec_require_domains */
+  { NULL, NULL },      /* dnssec_domains {request,require} */
   TRUE,                /* delay_after_cutoff */
   FALSE,               /* hosts_override */
   FALSE,               /* hosts_randomize */
@@ -1198,10 +1197,7 @@ switch (dns_lookup(dnsa, buffer, T_TLSA, &fullname))
   default:
   case DNS_FAIL:
     if (dane_required)
-      {
-      log_write(0, LOG_MAIN, "DANE error: TLSA lookup failed");
       return FAIL;
-      }
     break;
 
   case DNS_SUCCEED:
@@ -1372,7 +1368,7 @@ BOOL utf8_offered = FALSE;
 BOOL dsn_all_lasthop = TRUE;
 #if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
 BOOL dane = FALSE;
-BOOL dane_required;
+BOOL dane_required = verify_check_given_host(&ob->hosts_require_dane, host) == OK;
 dns_answer tlsa_dnsa;
 #endif
 smtp_inblock inblock;
@@ -1459,21 +1455,28 @@ if (continue_hostname == NULL)
     tls_out.dane_verified = FALSE;
     tls_out.tlsa_usage = 0;
 
-    dane_required = verify_check_given_host(&ob->hosts_require_dane, host) == OK;
-
     if (host->dnssec == DS_YES)
       {
       if(  (  dane_required
           || verify_check_given_host(&ob->hosts_try_dane, host) == OK
           )
        && (rc = tlsa_lookup(host, &tlsa_dnsa, dane_required, &dane)) != OK
+       && dane_required        /* do not error on only dane-requested */
        )
+       {
+       set_errno(addrlist, ERRNO_DNSDEFER,
+         string_sprintf("DANE error: tlsa lookup %s",
+           rc == DEFER ? "DEFER" : "FAIL"),
+         rc, FALSE, NULL);
        return rc;
+       }
       }
     else if (dane_required)
       {
-      log_write(0, LOG_MAIN, "DANE error: %s lookup not DNSSEC", host->name);
-      return FAIL;
+      set_errno(addrlist, ERRNO_DNSDEFER,
+       string_sprintf("DANE error: %s lookup not DNSSEC", host->name),
+       FAIL, FALSE, NULL);
+      return  FAIL;
       }
 
     if (dane)
@@ -3690,16 +3693,12 @@ for (cutoff_retry = 0; expired &&
     case, see if any of them are deferred. */
 
     if (rc == OK)
-      {
-      for (addr = addrlist; addr != NULL; addr = addr->next)
-        {
+      for (addr = addrlist; addr; addr = addr->next)
         if (addr->transport_return == DEFER)
           {
           some_deferred = TRUE;
           break;
           }
-        }
-      }
 
     /* If no addresses deferred or the result was ERROR, return. We do this for
     ERROR because a failing filter set-up or add_headers expansion is likely to