[PATCH] reresolve-dns: Add systemd-networkd support

[PATCH] reresolve-dns: Add systemd-networkd support

[Linus Wallgren]

Signed-off-by: Linus Wallgren <linus.wallgren@gmail.com>
---

I have never contributed to projects using `git-send-email` before, I
hope I didn't mess anything up :)

 contrib/examples/reresolve-dns/reresolve-dns.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/contrib/examples/reresolve-dns/reresolve-dns.sh b/contrib/examples/reresolve-dns/reresolve-dns.sh
index 8ab3635..c844b22 100755
--- a/contrib/examples/reresolve-dns/reresolve-dns.sh
+++ b/contrib/examples/reresolve-dns/reresolve-dns.sh
@@ -10,8 +10,13 @@ export LC_ALL=C
 
 CONFIG_FILE="$1"
 [[ $CONFIG_FILE =~ ^[a-zA-Z0-9_=+.-]{1,15}$ ]] && CONFIG_FILE="/etc/wireguard/$CONFIG_FILE.conf"
-[[ $CONFIG_FILE =~ /?([a-zA-Z0-9_=+.-]{1,15})\.conf$ ]]
-INTERFACE="${BASH_REMATCH[1]}"
+
+if [[ $CONFIG_FILE == /etc/wireguard/* ]]; then
+	[[ $CONFIG_FILE =~ /?([a-zA-Z0-9_=+.-]{1,15})\.conf$ ]]
+	INTERFACE="${BASH_REMATCH[1]}"
+elif [[ $CONFIG_FILE =~ systemd ]]; then
+	INTERFACE=$(awk '/^Name=/ { print substr($0, 6) }' "$CONFIG_FILE")
+fi
 
 process_peer() {
 	[[ $PEER_SECTION -ne 1 || -z $PUBLIC_KEY || -z $ENDPOINT ]] && return 0
@@ -34,6 +39,7 @@ while read -r line || [[ -n $line ]]; do
 	value="${stripped#*=}"; value="${value##*([[:space:]])}"; value="${value%%*([[:space:]])}"
 	[[ $key == "["* ]] && { process_peer; reset_peer_section; }
 	[[ $key == "[Peer]" ]] && PEER_SECTION=1
+	[[ $key == "[WireGuardPeer]" ]] && PEER_SECTION=1
 	if [[ $PEER_SECTION -eq 1 ]]; then
 		case "$key" in
 		PublicKey) PUBLIC_KEY="$value"; continue ;;
-- 
2.20.1

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