patches/packages/openvpn: Add more hotplug events

OpenVPN supports more hooks than just 'up' and 'down'. Especially
reacting to 'route-up' and 'route-pre-down' events could be important.
When routing table changes, it can make sense to adapt firewall, run
some tests or change even more routes. This change passes those events
to hotplug, so it is easy to react to them without changing
configuration files provided by VPN provider.

This has been sent to upstream, in the meantime, let's have it in house.

https://github.com/openwrt/packages/pull/21027

patches/packages/pending/0001-openvpn-Add-more-hotplug-events.patch

+From b98bff109d675a073170888f69cefcf9d8a4e825 Mon Sep 17 00:00:00 2001
+From: Michal Hrusecky <michal.hrusecky@turris.com>
+Date: Mon, 15 May 2023 14:30:29 +0200
+Subject: [PATCH] openvpn: Add more hotplug events
+
+OpenVPN supports more hooks than just 'up' and 'down'. Especially
+reacting to 'route-up' and 'route-pre-down' events could be important.
+When routing table changes, it can make sense to adapt firewall, run
+some tests or change even more routes. This change passes those events
+to hotplug, so it is easy to react to them without changing
+configuration files provided by VPN provider.
+
+https://github.com/openwrt/packages/pull/21027
+
+Signed-off-by: Michal Hrusecky <michal.hrusecky@turris.com>
+---
+ net/openvpn/files/openvpn.init | 3 +++
+ 2 files changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/net/openvpn/files/openvpn.init b/net/openvpn/files/openvpn.init
+index 380b42349..b5f612e46 100644
+--- a/net/openvpn/files/openvpn.init
++++ b/net/openvpn/files/openvpn.init
+@@ -153,6 +153,9 @@ openvpn_add_instance() {
+ 		--config "$conf" \
+ 		--up "/usr/libexec/openvpn-hotplug up $name" \
+ 		--down "/usr/libexec/openvpn-hotplug down $name" \
++		--route-up "/usr/libexec/openvpn-hotplug route-up $name" \
++		--route-pre-down "/usr/libexec/openvpn-hotplug route-pre-down $name" \
++		--ipchange "/usr/libexec/openvpn-hotplug ipchange $name" \
+ 		${up:+--setenv user_up "$up"} \
+ 		${down:+--setenv user_down "$down"} \
+ 		--script-security "${security:-2}" \
+-- 
+2.40.1
+