From: Alexander von Gluck <alex@terarocket.io>
Date: Thu, 28 Nov 2024 10:15:38 +0000 (+0100)
Subject: Haiku: Introduce basic platform / tun support
X-Git-Tag: v2.7_alpha1~160
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f80803710f74c1128f17cae285b6fa2754149d35;p=thirdparty%2Fopenvpn.git

Haiku: Introduce basic platform / tun support

* Special thanks to Sean Brady's hard work in GSoC 2023 towards creating
  a TUN/TAP driver for Haiku!
* More kudos to Augustin Cavalier for making it functional :-)

Signed-off-by: Alexander von Gluck <alex@terarocket.io>
Acked-by: Gert Doering <gert@greenie.muc.de>
Change-Id: I9a278374f492a538f0c174ced1746c3b1f82b8c9
Message-Id: <20241128101538.12810-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg29947.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
---

diff --git a/INSTALL b/INSTALL
index 6007338f5..973927222 100644
--- a/INSTALL
+++ b/INSTALL
@@ -263,6 +263,16 @@ TUN/TAP Driver References:
 
     http://www.whiteboard.ne.jp/~admin2/tuntap/
 
+* Haiku:
+
+   Haiku can't yet dynamically create TUN/TAP devices, so you need to manually
+   create one before running openvpn:
+
+     # ifconfig tun/0 up
+
+   A standard reference the dev as "tun" in your config is all that's needed
+   to use the tunnel device.
+
 * Windows
 
   OpenVPN on Windows needs a TUN/TAP kernel driver to work. OpenVPN installers
diff --git a/configure.ac b/configure.ac
index 0876a6a58..7f6e43dd5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -368,6 +368,11 @@ case "$host" in
 		have_tap_header="yes"
 		ac_cv_header_net_if_h="no"	# exists, but breaks things
 		;;
+	*-*-haiku*)
+		AC_DEFINE([TARGET_HAIKU], [1], [Are we running Haiku?])
+		AC_DEFINE_UNQUOTED([TARGET_PREFIX], ["H"], [Target prefix])
+		LIBS="${LIBS} -lnetwork"
+		;;
 	*)
 		AC_DEFINE_UNQUOTED([TARGET_PREFIX], ["X"], [Target prefix])
 		have_tap_header="yes"
diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c
index 85fe01afa..29d823ddf 100644
--- a/src/openvpn/tun.c
+++ b/src/openvpn/tun.c
@@ -1631,6 +1631,13 @@ do_ifconfig_ipv4(struct tuntap *tt, const char *ifname, int tun_mtu,
     {
         windows_set_mtu(tt->adapter_index, AF_INET, tun_mtu);
     }
+#elif defined(TARGET_HAIKU)
+    /* example: ifconfig tun/0 inet 1.1.1.1 255.255.255.0 mtu 1450 up */
+    argv_printf(&argv, "%s %s inet %s %s mtu %d up", IFCONFIG_PATH,
+                ifname, ifconfig_local, ifconfig_remote_netmask, tun_mtu);
+
+    argv_msg(M_INFO, &argv);
+    openvpn_execve_check(&argv, es, S_FATAL, "Haiku ifconfig failed");
 #else  /* if defined(TARGET_LINUX) */
     msg(M_FATAL, "Sorry, but I don't know how to do 'ifconfig' commands on this operating system.  You should ifconfig your TUN/TAP device manually or use an --up script.");
 #endif /* if defined(TARGET_LINUX) */
@@ -1909,10 +1916,15 @@ open_tun_generic(const char *dev, const char *dev_type, const char *dev_node,
         {
             for (int i = 0; i < 256; ++i)
             {
+                /* some platforms have a dedicated directory per driver */
+                char *sep = "";
+#if defined(TARGET_HAIKU)
+                sep = "/";
+#endif
                 snprintf(tunname, sizeof(tunname),
-                         "/dev/%s%d", dev, i);
+                         "/dev/%s%s%d", dev, sep, i);
                 snprintf(dynamic_name, sizeof(dynamic_name),
-                         "%s%d", dev, i);
+                         "%s%s%d", dev, sep, i);
                 if ((tt->fd = open(tunname, O_RDWR)) > 0)
                 {
                     dynamic_opened = true;