wireguard: Add client info view

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

actions/wireguard

@@ -23,6 +23,8 @@ import argparse
 import json
 import subprocess
 
+PUBLIC_KEY_HELP = 'Public key for the client'
+
 SERVER_INTERFACE = 'wg0'
 
 
@@ -32,14 +34,14 @@ def parse_arguments():
     subparsers = parser.add_subparsers(dest='subcommand', help='Sub command')
 
     subparsers.add_parser('setup', help='Setup WireGuard')
-    subparsers.add_parser('list-clients', help='List all clients')
+    subparsers.add_parser('get-info', help='Get server and clients info')
 
     add_client = subparsers.add_parser('add-client', help='Add a client')
-    add_client.add_argument('publickey', help='Public key for the client')
+    add_client.add_argument('publickey', help=PUBLIC_KEY_HELP)
 
     remove_client = subparsers.add_parser('remove-client',
                                           help='Remove a client')
-    remove_client.add_argument('publickey', help='Public key for the client')
+    remove_client.add_argument('publickey', help=PUBLIC_KEY_HELP)
 
     subparsers.required = True
     return parser.parse_args()
@@ -52,23 +54,39 @@ def subcommand_setup(_):
         check=True)
 
 
-def subcommand_list_clients(_):
-    """List all clients."""
-    clients = []
+def subcommand_get_info(_):
+    """Get server and clients info."""
     output = subprocess.check_output(
-        ['wg', 'show', SERVER_INTERFACE, 'latest-handshakes']).decode().strip()
-    for client_info in output.split('\n'):
-        try:
-            public_key, latest_handshake = client_info.split()
-        except ValueError:
-            continue
+        ['wg', 'show', SERVER_INTERFACE, 'dump']).decode().strip()
+    lines = output.split('\n')
+    server_data = lines.pop(0).split()
+    server = {
+        'private_key': server_data[0],
+        'public_key': server_data[1],
+        'listen_port': server_data[2],
+        'fwmark': server_data[3],
+    }
 
-        clients.append({
-            'public_key': public_key,
-            'latest_handshake': latest_handshake,
-        })
+    clients = []
+    for client_line in lines:
+        client_data = client_line.split()
+        client_info = {
+            'public_key': client_data[0],
+            'preshared_key': client_data[1],
+            'endpoint': client_data[2],
+            'allowed_ips': client_data[3],
+            'latest_handshake': client_data[4],
+            'transfer_rx': client_data[5],
+            'transfer_tx': client_data[6],
+            'persistent_keepalive': client_data[7],
+        }
+        clients.append(client_info)
 
-    print(json.dumps(clients))
+    info = {
+        'server': server,
+        'clients': clients,
+    }
+    print(json.dumps(info))
 
 
 def subcommand_add_client(arguments):

plinth/modules/wireguard/__init__.py

@@ -18,6 +18,8 @@
 FreedomBox app for wireguard.
 """
 
+import json
+
 from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
 
@@ -98,3 +100,9 @@ def setup(helper, old_version=None):
     helper.install(managed_packages)
     helper.call('post', actions.superuser_run, 'wireguard', ['setup'])
     helper.call('post', app.enable)
+
+
+def get_info():
+    """Get server and clients info."""
+    info = actions.superuser_run('wireguard', ['get-info'])
+    return json.loads(info)

plinth/modules/wireguard/templates/wireguard.html

@@ -26,23 +26,38 @@
 
   <p>{% trans "Peers allowed to connect to this server" %}</p>
   <table class="table table-bordered table-condensed table-striped"
-	 id="server-clients-list">
+         id="server-clients-list">
     <tr>
       <th>{% trans "Public Key" %}</th>
       <th>{% trans "Last Connected Time" %}</th>
       <th>{% trans "Delete" %}</th>
     </tr>
-    {% for client in server_clients %}
+    {% if server_clients %}
+      {% for client in server_clients %}
+	<tr>
+          <td>
+	    <a href="{% url 'wireguard:show-client' client.public_key %}">
+	      {{ client.public_key }}
+	    </a>
+	  </td>
+          <td>{{ client.latest_handshake }}</td>
+          <td><a class="btn btn-sm btn-default"
+		 href="{% url 'wireguard:delete-client' client.public_key %}">
+            <span class="fa fa-trash-o" aria-hidden="true">
+            </span>
+          </td>
+	</tr>
+      {% endfor %}
+
+    {% else %}
       <tr>
-	<td>{{ client.public_key }}</td>
-	<td>{{ client.latest_handshake }}</td>
-	<td><a class="btn btn-sm btn-default"
-	       href="{% url 'wireguard:delete-client' client.public_key %}">
-	  <span class="fa fa-trash-o" aria-hidden="true">
-	  </span>
+	<td>
+          {% blocktrans trimmed %}
+            No peers configured to connect to this {{ box_name }} yet.
+          {% endblocktrans %}
 	</td>
       </tr>
-    {% endfor %}
+    {% endif %}
   </table>
 
   <a title="{% trans 'Add a new peer' %}"

plinth/modules/wireguard/templates/wireguard_show_client.html

@@ -0,0 +1,39 @@
+{% extends "base.html" %}
+{% comment %}
+#
+# This file is part of FreedomBox.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+{% endcomment %}
+
+{% load i18n %}
+
+{% block content %}
+
+  <h3>{{ title }}</h3>
+
+  <h4>{% trans "Connection Information" %}</h4>
+  <p>{% trans "IP address to use:" %}</p>
+  <p>{% trans "Server endpoints:" %}</p>
+  <p>{% trans "Server's public key:" %} {{ server.public_key }}</p>
+  <p>{% trans "Pre-shared key:" %}</p>
+
+  <h4>{% trans "Status" %}</h4>
+  <p>{% trans "Client Public Key:" %} {{ client.public_key }}</p>
+  <p>{% trans "Data transmitted:" %} {{ client.transfer_tx }}</p>
+  <p>{% trans "Data received:" %} {{ client.transfer_rx }}</p>
+  <p>{% trans "Latest handshake:" %} {{ client.latest_handshake }}</p>
+
+{% endblock %}

plinth/modules/wireguard/urls.py

@@ -26,6 +26,8 @@ urlpatterns = [
     url(r'^apps/wireguard/$', views.WireguardView.as_view(), name='index'),
     url(r'^apps/wireguard/client/add/$', views.AddClientView.as_view(),
         name='add-client'),
+    url(r'^apps/wireguard/client/(?P<public_key>[^/]+)/show/$',
+        views.ShowClientView.as_view(), name='show-client'),
     url(r'^apps/wireguard/client/(?P<public_key>[^/]+)/delete/$',
         views.DeleteClientView.as_view(), name='delete-client'),
 ]

plinth/modules/wireguard/views.py

@@ -18,8 +18,6 @@
 Views for WireGuard application.
 """
 
-import json
-
 from django.contrib import messages
 from django.contrib.messages.views import SuccessMessageMixin
 from django.shortcuts import redirect
@@ -48,8 +46,8 @@ class WireguardView(AppView):
     def get_context_data(self, **kwargs):
         """Return additional context for rendering the template."""
         context = super().get_context_data(**kwargs)
-        clients_list = actions.superuser_run('wireguard', ['list-clients'])
-        context['server_clients'] = json.loads(clients_list)
+        info = wireguard.get_info()
+        context['server_clients'] = info['clients']
         return context
 
 
@@ -73,6 +71,23 @@ class AddClientView(SuccessMessageMixin, FormView):
         return super().form_valid(form)
 
 
+class ShowClientView(SuccessMessageMixin, TemplateView):
+    """View to show a client's details."""
+    template_name = 'wireguard_show_client.html'
+
+    def get_context_data(self, **kwargs):
+        """Return additional context data for rendering the template."""
+        context = super().get_context_data(**kwargs)
+        context['title'] = _('Show Client')
+        public_key = self.kwargs['public_key']
+        info = wireguard.get_info()
+        context['server'] = info['server']
+        for client in info['clients']:
+            if client['public_key'] == public_key:
+                context['client'] = client
+        return context
+
+
 class DeleteClientView(SuccessMessageMixin, TemplateView):
     """View to delete a client."""
     template_name = 'wireguard_delete_client.html'