diff mbox series

[Openvpn-devel,v100,03/10] dco-win: add platform dependant check on incompatible options

Message ID 20220812130657.29899-4-a@unstable.cc
State Changes Requested
Headers show
Series ovpn-dco: leftovers | expand

Commit Message

Antonio Quartulli Aug. 12, 2022, 3:06 a.m. UTC 
Some platforms may have different constraints in terms of incompatible
opions, therefore we add a function that explicitly checks those.

Also, add generic option check for when ovpn-dco-win is in use.

Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Lev Stipakov <lev@openvpn.net>
---
 src/openvpn/dco.c     | 17 +++++++++++++++--
 src/openvpn/options.c |  5 +++++
 2 files changed, 20 insertions(+), 2 deletions(-)

Comments

Lev Stipakov Aug. 12, 2022, 6:50 a.m. UTC | #1 
Hi,

I think commit message is a bit misleading:

>dco-win: add platform dependant check on incompatible options
>Some platforms may have different constraints in terms of incompatible
>opions, therefore we add a function that explicitly checks those.
>Also, add generic option check for when ovpn-dco-win is in use.

We already have a function which does platform-specific checks on
options and this code only adds Windows-specific checks.

How about:

dco-win: check for incompatible options

At the moment dco-win doesn't support --persist-tun and --server,
so add this to options check.


pe 12. elok. 2022 klo 16.07 Antonio Quartulli (a@unstable.cc) kirjoitti:

> Some platforms may have different constraints in terms of incompatible
> opions, therefore we add a function that explicitly checks those.
>
> Also, add generic option check for when ovpn-dco-win is in use.
>
> Signed-off-by: Antonio Quartulli <a@unstable.cc>
> Signed-off-by: Lev Stipakov <lev@openvpn.net>
> ---
>  src/openvpn/dco.c     | 17 +++++++++++++++--
>  src/openvpn/options.c |  5 +++++
>  2 files changed, 20 insertions(+), 2 deletions(-)
>
> diff --git a/src/openvpn/dco.c b/src/openvpn/dco.c
> index ac694d18..d330d917 100644
> --- a/src/openvpn/dco.c
> +++ b/src/openvpn/dco.c
> @@ -221,7 +221,20 @@ dco_update_keys(dco_context_t *dco, struct tls_multi
> *multi)
>  static bool
>  dco_check_option_conflict_platform(int msglevel, const struct options *o)
>  {
> -#if defined(TARGET_LINUX)
> +#if defined(_WIN32)
> +    if (o->mode == MODE_SERVER)
> +    {
> +        msg(msglevel, "Only client and p2p data channel offload is
> supported "
> +            "with ovpn-dco-win.");
> +        return false;
> +    }
> +
> +    if (o->persist_tun)
> +    {
> +        msg(msglevel, "--persist-tun is not supported with
> ovpn-dco-win.");
> +        return false;
> +    }
> +#elif defined(TARGET_LINUX)
>      /* if the device name is fixed, we need to check if an interface with
> this
>       * name already exists. IF it does, it must be a DCO interface,
> otherwise
>       * DCO has to be disabled in order to continue.
> @@ -246,7 +259,7 @@ dco_check_option_conflict_platform(int msglevel, const
> struct options *o)
>                  strerror(-ret), ret);
>          }
>      }
> -#endif /* if defined(TARGET_LINUX) */
> +#endif /* if defined(_WIN32) */
>      return true;
>  }
>
> diff --git a/src/openvpn/options.c b/src/openvpn/options.c
> index 0ce3158b..90e59582 100644
> --- a/src/openvpn/options.c
> +++ b/src/openvpn/options.c
> @@ -2450,6 +2450,11 @@ options_postprocess_verify_ce(const struct options
> *options,
>      {
>          msg(M_USAGE, "--windows-driver wintun requires --dev tun");
>      }
> +
> +    if (options->windows_driver == WINDOWS_DRIVER_DCO)
> +    {
> +        dco_check_option_conflict(M_USAGE, options);
> +    }
>  #endif /* ifdef _WIN32 */
>
>      /*
> --
> 2.35.1
>
>
>
> _______________________________________________
> Openvpn-devel mailing list
> Openvpn-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/openvpn-devel
>
diff mbox series

Patch

diff --git a/src/openvpn/dco.c b/src/openvpn/dco.c
index ac694d18..d330d917 100644
--- a/src/openvpn/dco.c
+++ b/src/openvpn/dco.c
@@ -221,7 +221,20 @@  dco_update_keys(dco_context_t *dco, struct tls_multi *multi)
 static bool
 dco_check_option_conflict_platform(int msglevel, const struct options *o)
 {
-#if defined(TARGET_LINUX)
+#if defined(_WIN32)
+    if (o->mode == MODE_SERVER)
+    {
+        msg(msglevel, "Only client and p2p data channel offload is supported "
+            "with ovpn-dco-win.");
+        return false;
+    }
+
+    if (o->persist_tun)
+    {
+        msg(msglevel, "--persist-tun is not supported with ovpn-dco-win.");
+        return false;
+    }
+#elif defined(TARGET_LINUX)
     /* if the device name is fixed, we need to check if an interface with this
      * name already exists. IF it does, it must be a DCO interface, otherwise
      * DCO has to be disabled in order to continue.
@@ -246,7 +259,7 @@  dco_check_option_conflict_platform(int msglevel, const struct options *o)
                 strerror(-ret), ret);
         }
     }
-#endif /* if defined(TARGET_LINUX) */
+#endif /* if defined(_WIN32) */
     return true;
 }
 
diff --git a/src/openvpn/options.c b/src/openvpn/options.c
index 0ce3158b..90e59582 100644
--- a/src/openvpn/options.c
+++ b/src/openvpn/options.c
@@ -2450,6 +2450,11 @@  options_postprocess_verify_ce(const struct options *options,
     {
         msg(M_USAGE, "--windows-driver wintun requires --dev tun");
     }
+
+    if (options->windows_driver == WINDOWS_DRIVER_DCO)
+    {
+        dco_check_option_conflict(M_USAGE, options);
+    }
 #endif /* ifdef _WIN32 */
 
     /*