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[Openvpn-devel,XS] Change in openvpn[release/2.6]: Make --dns options apply for tap-windows6 driver

Message ID 0cc2f4aee0de22a0a54cf7c9761de5de4cf1c819-HTML@gerrit.openvpn.net
State Superseded
Headers show
Series [Openvpn-devel,XS] Change in openvpn[release/2.6]: Make --dns options apply for tap-windows6 driver | expand

Commit Message

plaisthos (Code Review) Nov. 10, 2023, 10:22 a.m. UTC 
Attention is currently required from: flichtenheld, plaisthos.

Hello plaisthos, flichtenheld,

I'd like you to do a code review.
Please visit

    http://gerrit.openvpn.net/c/openvpn/+/423?usp=email

to review the following change.


Change subject: Make --dns options apply for tap-windows6 driver
......................................................................

Make --dns options apply for tap-windows6 driver

When tap-windows6 driver is used, both --dhcp-option and
--dns options are applied with DHCP. When processing --dns options,
we don't set "tuntap_options.dhcp_options" member, which is required
for DHCP string to be sent to the driver. As a result, --dns options
are not applied at all.

Fix by adding missing assignment of tuntap_options.dhcp_options.

Fixes https://github.com/OpenVPN/openvpn/issues/447

Change-Id: I24f43ad319bd1ca530fe17442d02a97412eb75c7
Signed-off-by: Lev Stipakov <lev@openvpn.net>
---
M src/openvpn/options.c
1 file changed, 6 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/23/423/1
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Patch

diff --git a/src/openvpn/options.c b/src/openvpn/options.c
index 631ac73..e793a96 100644
--- a/src/openvpn/options.c
+++ b/src/openvpn/options.c
@@ -8014,6 +8014,9 @@ 
         if (streq(p[1], "search-domains") && p[2])
         {
             dns_domain_list_append(&options->dns_options.search_domains, &p[2], &options->dns_options.gc);
+#ifdef _WIN32
+            options->tuntap_options.dhcp_options |= DHCP_OPTIONS_DHCP_REQUIRED;
+#endif
         }
         else if (streq(p[1], "server") && p[2] && p[3] && p[4])
         {
@@ -8090,6 +8093,9 @@ 
                 msg(msglevel, "--dns server %ld: unknown option type '%s' or missing or unknown parameter", priority, p[3]);
                 goto err;
             }
+#ifdef _WIN32
+            options->tuntap_options.dhcp_options |= DHCP_OPTIONS_DHCP_OPTIONAL;
+#endif
         }
         else
         {