From: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Wed, 16 May 2018 02:12:02 +0000 (+0200)
Subject: wg-quick: add intentionally undocumented userspace implementation knob
X-Git-Tag: v1.0.20191226~123
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c407ae27b820310fb382fea9623b45fab50f0e5;p=thirdparty%2Fwireguard-tools.git

wg-quick: add intentionally undocumented userspace implementation knob

This knob might disappear at some point, and we don't want to encourage
its use, so it's not being documented, but this should help with
development of new implementations.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---

diff --git a/src/wg-quick/darwin.bash b/src/wg-quick/darwin.bash
index 4a3240c..0eef3d9 100755
--- a/src/wg-quick/darwin.bash
+++ b/src/wg-quick/darwin.bash
@@ -101,7 +101,7 @@ get_real_interface() {
 add_if() {
 	export WG_DARWIN_UTUN_NAME_FILE="/var/run/wireguard/$INTERFACE.name"
 	mkdir -m 0700 -p "/var/run/wireguard/"
-	cmd wireguard-go utun
+	cmd "${WG_QUICK_USERSPACE_IMPLEMENTATION:-wireguard-go}" utun
 	get_real_interface
 }
 
diff --git a/src/wg-quick/linux.bash b/src/wg-quick/linux.bash
index 38ccad2..9139e7f 100755
--- a/src/wg-quick/linux.bash
+++ b/src/wg-quick/linux.bash
@@ -86,9 +86,9 @@ add_if() {
 	local ret
 	if ! cmd ip link add "$INTERFACE" type wireguard; then
 		ret=$?
-		[[ -e /sys/module/wireguard ]] || ! command -v wireguard-go >/dev/null && return $ret
+		[[ -e /sys/module/wireguard ]] || ! command -v "${WG_QUICK_USERSPACE_IMPLEMENTATION:-wireguard-go}" >/dev/null && exit $ret
 		echo "[!] Missing WireGuard kernel module. Falling back to slow userspace implementation."
-		cmd wireguard-go "$INTERFACE"
+		cmd "${WG_QUICK_USERSPACE_IMPLEMENTATION:-wireguard-go}" "$INTERFACE"
 	fi
 }