Wireguard route patching script

arch-config/scripts/pieces/wireguard-add-route.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [ $# -eq 0 ]; then
+    echo "Please supply one file"
+    $(exit 1); echo "$?"
+elif [ $# -ge 2 ]; then
+    echo "Please only give one argument"
+    $(exit 1); echo "$?"
+fi
+
+cd "$HOME"
+
+file="$1"
+parent="$(dirname "$file")"
+extract="${parent}/vpnconfigs"
+patched="${file%.*}-patched.zip"
+
+cd "$parent"
+
+mkdir -p "${parent}/vpnconfigs"
+
+unzip "$file" -d "$extract"
+
+readarray -d '' conffiles < <(find "$extract" -name "*\.conf" -print0)
+
+for file in "${conffiles[@]}"; do
+    if grep "PostUp" "$file" &>/dev/null; then
+        echo "Skipping $file"
+    else
+        echo "Patching $file"
+        awk 'NR==5{print "PostUp = ip route add 192.168.1.0/24 via 172.16.52.1"}NR==5{print "PreDown = ip route delete 192.168.1.0/24;"}1' "$file" > "${file}.tmp"
+        mv "${file}.tmp" "$file"
+    fi
+done
+
+zip -r -9 "$patched" "vpnconfigs"
+
+rm -rf "$extract"