challenge: use wg tunnel

challenge.yml

@@ -78,3 +78,25 @@ files:
 
       exec login $@
     mode: "0755"
+  - path: bin/wg-adlin
+    contents: |
+      #!/bin/sh
+
+      privatekey="$(wg genkey)"
+      grep PrivateKey /etc/wireguard/adlin.conf > /dev/null 2> /dev/null && {
+          privatekey="$(grep PrivateKey /etc/wireguard/adlin.conf | head -n 1 | sed -r 's/^.*=\s*(.+)\s*$/\1/')"
+      }
+      publickey="$(echo $privatekey | wg pubkey)"
+
+      umask 077
+      mkdir -p /etc/wireguard
+      cat > /etc/wireguard/adlin.conf <<EOF
+      [Interface]
+      PrivateKey = $privatekey
+      EOF
+
+      curl -f -d @- http://wg.adlin.nemunai.re:81/register <<EOF >> /etc/wireguard/adlin.conf &&
+      {"PubKey": "${publickey}"}
+      EOF
+      echo -e "[\\e[01;32m+] \\e[01;32mSuccess.\\e[0m Tunnel configuration written to \\e[01m/etc/wireguard/adlin.conf\\e[0m; you have to use the address: \\e[01m$(grep Address= /etc/wireguard/adlin.conf | sed -r 's/^.*=(.*)$/\1/')\\e[0m" || echo -e "[\\e[01;31m-\\e[0m] \\e[01;31mFailure\\e[0m"
+    mode: "0755"

pkg/challenge/Dockerfile

@@ -50,7 +50,8 @@ RUN apk add --no-cache --initdb -p /out \
     tini \
     ttf-inconsolata \
     util-linux \
-    util-linux-doc
+    util-linux-doc \
+    wireguard-tools-wg
 
 RUN makewhatis /out/usr/share/man