Introduce EXPERIMENTAL_DANE feature

[exim.git] / src / src / host.c

diff --git a/src/src/host.c b/src/src/host.c
index a59c4381b9c45160360a32af25b91baa99e9ef3c..2eef0ba700ee2e25e993c2555d5a356a138ffce3 100644 (file)
--- a/src/src/host.c
+++ b/src/src/host.c
@@ -1181,17 +1181,13 @@ int sep = 0;
 uschar buffer[32];
 uschar *list = tls_in.on_connect_ports;
 uschar *s;
+uschar *end;
 
 if (tls_in.on_connect) return TRUE;
 
-while ((s = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL)
-  {
-  uschar *end;
-  int lport = Ustrtol(s, &end, 10);
-  if (*end != 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "tls_on_connect_ports "
-    "contains \"%s\", which is not a port number: exim abandoned", s);
-  if (lport == port) return TRUE;
-  }
+while ((s = string_nextinlist(&list, &sep, buffer, sizeof(buffer))))
+  if (Ustrtol(s, &end, 10) == port)
+    return TRUE;
 
 return FALSE;
 }
@@ -2211,7 +2207,7 @@ Returns:       HOST_FIND_FAILED     couldn't find A record
 static int
 set_address_from_dns(host_item *host, host_item **lastptr,
   uschar *ignore_target_hosts, BOOL allow_ip, uschar **fully_qualified_name,
-  BOOL dnssec_requested, BOOL dnssec_require)
+  BOOL dnssec_request, BOOL dnssec_require)
 {
 dns_record *rr;
 host_item *thishostlast = NULL;    /* Indicates not yet filled in anything */
@@ -2272,7 +2268,7 @@ for (; i >= 0; i--)
   dns_scan dnss;
 
   int rc = dns_lookup(&dnsa, host->name, type, fully_qualified_name);
-  lookup_dnssec_authenticated = !dnssec_requested ? NULL
+  lookup_dnssec_authenticated = !dnssec_request ? NULL
     : dns_is_secure(&dnsa) ? US"yes" : US"no";
 
   /* We want to return HOST_FIND_AGAIN if one of the A, A6, or AAAA lookups
@@ -2296,11 +2292,31 @@ for (; i >= 0; i--)
     if (rc != DNS_NOMATCH && rc != DNS_NODATA) v6_find_again = TRUE;
     continue;
     }
-  if (dnssec_require && !dns_is_secure(&dnsa))
+
+  if (dnssec_request)
     {
-    log_write(L_host_lookup_failed, LOG_MAIN, "dnssec fail on %s for %.256s",
+    if (dns_is_secure(&dnsa))
+      {
+      DEBUG(D_host_lookup) debug_printf("%s A DNSSEC\n", host->name);
+      if (host->dnssec == DS_UNK) /* set in host_find_bydns() */
+       host->dnssec = DS_YES;
+      }
+    else
+      {
+      if (dnssec_require)
+       {
+       log_write(L_host_lookup_failed, LOG_MAIN,
+               "dnssec fail on %s for %.256s",
                i>1 ? "A6" : i>0 ? "AAAA" : "A", host->name);
-    continue;
+       continue;
+       }
+      if (host->dnssec == DS_YES) /* set in host_find_bydns() */
+       {
+       DEBUG(D_host_lookup) debug_printf("%s A cancel DNSSEC\n", host->name);
+       host->dnssec = DS_NO;
+       lookup_dnssec_authenticated = US"no";
+       }
+      }
     }
 
   /* Lookup succeeded: fill in the given host item with the first non-ignored
@@ -2566,9 +2582,14 @@ if (rc != DNS_SUCCEED && (whichrrs & HOST_FIND_BY_MX) != 0)
   if (dnssec_request)
     {
     if (dns_is_secure(&dnsa))
-      { dnssec = DS_YES; lookup_dnssec_authenticated = US"yes"; }
+      { 
+      DEBUG(D_host_lookup) debug_printf("%s MX DNSSEC\n", host->name);
+      dnssec = DS_YES; lookup_dnssec_authenticated = US"yes";
+      }
     else
-      { dnssec = DS_NO; lookup_dnssec_authenticated = US"no"; }
+      {
+      dnssec = DS_NO; lookup_dnssec_authenticated = US"no";
+      }
     }
 
   switch (rc)
@@ -2582,7 +2603,7 @@ if (rc != DNS_SUCCEED && (whichrrs & HOST_FIND_BY_MX) != 0)
       log_write(L_host_lookup_failed, LOG_MAIN,
                  "dnssec fail on MX for %.256s", host->name);
       rc = DNS_FAIL;
-      /*FALLTRHOUGH*/
+      /*FALLTHROUGH*/
 
     case DNS_FAIL:
     case DNS_AGAIN:
@@ -2613,19 +2634,11 @@ if (rc != DNS_SUCCEED)
   last = host;        /* End of local chainlet */
   host->mx = MX_NONE;
   host->port = PORT_NONE;
-  dnssec = DS_UNK;
+  host->dnssec = DS_UNK;
   lookup_dnssec_authenticated = NULL;
   rc = set_address_from_dns(host, &last, ignore_target_hosts, FALSE,
     fully_qualified_name, dnssec_request, dnssec_require);
 
-  if (dnssec_request)
-    {
-    if (dns_is_secure(&dnsa))
-      { dnssec = DS_YES; lookup_dnssec_authenticated = US"yes"; }
-    else
-      { dnssec = DS_NO; lookup_dnssec_authenticated = US"no"; }
-    }
-
   /* If one or more address records have been found, check that none of them
   are local. Since we know the host items all have their IP addresses
   inserted, host_scan_for_local_hosts() can only return HOST_FOUND or