Don't print OCC warnings about 'key-method', 'keydir' and 'tls-auth'

Like 'proto', a mismatch in key-method, keydir or tls-auth would fail
before we ever get to the point where we can print this warning.

This prepares for removing these from the occ string later on, but also
prepares for tls-crypt-v2, which allows a server to support tls-auth and
tls-crypt-v2 connections in parallel. Such a server will send 'keydir'
and 'tls-auth' in the occ string. This change removes the spurious
warnings about that in the client log.

Signed-off-by: Steffan Karger <steffan.karger@fox-it.com>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20181007175215.25009-1-steffan@karger.me>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg17618.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>

diff --git a/src/openvpn/options.c b/src/openvpn/options.c
index 2199af530b241e44b981e26de6b373290a898d32..e42029c58501ea29b56600cc0680e770581bc20c 100644 (file)
--- a/src/openvpn/options.c
+++ b/src/openvpn/options.c
@@ -3788,11 +3788,15 @@ options_warning_safe_scan2(const int msglevel,
                            const char *b1_name,
                            const char *b2_name)
 {
-    /* we will stop sending 'proto xxx' in OCC in a future version
-     * (because it's not useful), and to reduce questions when
-     * interoperating, we start not-printing a warning about it today
+    /* We will stop sending 'key-method', 'keydir', 'proto' and 'tls-auth' in
+     * OCC in a future version (because it's not useful). To reduce questions
+     * when interoperating, we no longer printing a warning about it.
      */
-    if (strncmp(p1, "proto ", 6) == 0)
+    if (strprefix(p1, "key-method ")
+        || strprefix(p1, "keydir ")
+        || strprefix(p1, "proto ")
+        || strprefix(p1, "tls-auth ")
+        || strprefix(p1, "tun-ipv6"))
     {
         return;
     }