wireguard: Show this box's public key

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/modules/wireguard/__init__.py

@@ -104,6 +104,19 @@ def setup(helper, old_version=None):
     helper.call('post', app.enable)
 
 
+def get_public_key():
+    """Return this box's public key."""
+    public_key_path = '/var/lib/freedombox/wireguard/publickey'
+    try:
+        with open(public_key_path) as public_key_file:
+            public_key = public_key_file.read().strip()
+
+    except FileNotFoundError:
+        public_key = None
+
+    return public_key
+
+
 def get_info():
     """Return server and clients info."""
     output = actions.superuser_run('wireguard', ['get-info'])

plinth/modules/wireguard/templates/wireguard.html

@@ -25,6 +25,7 @@
   <h3>{% trans "Server" %}</h3>
 
   <p>{% trans "Peers allowed to connect to this server" %}</p>
+
   <table class="table table-bordered table-condensed table-striped"
          id="server-peers-list">
     <tr>
@@ -109,6 +110,16 @@
     {% trans "Add Server" %}
   </a>
 
+  <h3>{% trans "Connection Information" %}</h3>
+
+  <p>
+    {% blocktrans %}
+      Public key for this {{ box_name }}:
+    {% endblocktrans %}
+
+    <pre>{{ public_key }}</pre>
+  </p>
+
   {{ block.super }}
 
 {% endblock %}

plinth/modules/wireguard/views.py

@@ -46,6 +46,7 @@ class WireguardView(AppView):
     def get_context_data(self, **kwargs):
         """Return additional context for rendering the template."""
         context = super().get_context_data(**kwargs)
+        context['public_key'] = wireguard.get_public_key()
         info = wireguard.get_info()
         context['server_peers'] = info['my_server']['clients']
         context['client_peers'] = info['my_client']['servers']