main/wireguard-tools: add wg-quick init script

Script from Gentoo's wireguard-tools package.
To use, symlink the script to wg-quick.$interface.

main/wireguard-tools/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Stuart Cardall <developer@it-offshore.co.uk>
 pkgname=wireguard-tools
 pkgver=1.0.20210914
-pkgrel=3
+pkgrel=4
 pkgdesc="Next generation secure network tunnel: userspace tools"
 arch="all"
 url="https://www.wireguard.com"
@@ -13,14 +13,19 @@ license="GPL-2.0-only"
 _wg_quick_deps="iproute2 bash openresolv"
 makedepends="libmnl-dev $_wg_quick_deps"
 depends="$pkgname-wg $pkgname-wg-quick"
+install="$pkgname-openrc.post-install"
 subpackages="
 	$pkgname-doc
 	$pkgname-bash-completion
 	$pkgname-wg:_split
 	$pkgname-wg-quick:_split:noarch
+	$pkgname-openrc
 	"
 options="!check"
-source="https://git.zx2c4.com/wireguard-tools/snapshot/wireguard-tools-$pkgver.tar.xz"
+source="
+	https://git.zx2c4.com/wireguard-tools/snapshot/wireguard-tools-$pkgver.tar.xz
+	wg-quick.initd
+	"
 
 build() {
 	make -C src
@@ -38,6 +43,8 @@ package() {
 
 	find "$builddir"/contrib -name '.gitignore' -delete
 	cp -rf "$builddir"/contrib "$pkgdir/usr/share/doc/$pkgname/"
+
+	install -Dm755 "$srcdir"/wg-quick.initd "$pkgdir"/etc/init.d/wg-quick
 }
 
 _split() {
@@ -53,4 +60,5 @@ _split() {
 
 sha512sums="
 6727ea65551dbb064457449b93a943bd6534ca93bc7fa5704c2f6826266c98688ee9ea28731fda57a5245d5f63c05f3899fcca54e40c0b6251b7c4796e957445  wireguard-tools-1.0.20210914.tar.xz
+3de3edb359a786bdb8de06f496caced1293048c2ec489073c0525b4eca61365424ffde6a7eb899d7672db38872b6c67436b2e39019e92300ca5e590ba02c2e84  wg-quick.initd
 "

main/wireguard-tools/wg-quick.initd

@@ -0,0 +1,38 @@
+#!/sbin/openrc-run
+# Copyright 2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+name="WireGuard"
+description="WireGuard via wg-quick(8)"
+
+depend() {
+	need net
+	use dns
+}
+
+CONF="${SVCNAME#*.}"
+
+checkconfig() {
+	if [ "$CONF" = "$SVCNAME" ]; then
+		eerror "You cannot call this init script directly. You must create a symbolic link to it with the configuration name:"
+		eerror "    ln -s /etc/init.d/wg-quick /etc/init.d/wg-quick.vpn0"
+		eerror "And then call it instead:"
+		eerror "    /etc/init.d/wg-quick.vpn0 start"
+		return 1
+	fi
+	return 0
+}
+
+start() {
+	checkconfig || return 1
+	ebegin "Starting $description for $CONF"
+	wg-quick up "$CONF"
+	eend $? "Failed to start $description for $CONF"
+}
+
+stop() {
+	checkconfig || return 1
+	ebegin "Stopping $description for $CONF"
+	wg-quick down "$CONF"
+	eend $? "Failed to stop $description for $CONF"
+}

main/wireguard-tools/wireguard-tools-openrc.post-install

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+cat 1>&2 <<EOF
+*
+* To use the WireGuard OpenRC script, you need to create a symbolic link to it with the configuration name:
+*     ln -s /etc/init.d/wg-quick /etc/init.d/wg-quick.wg0
+* And then call it instead:
+*     rc-service wg-quick.wg0 start
+*
+EOF