firewall: Show port forwarding info contextually

- When port forwarding configuration is not required in the router, don't show
the ports information.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Veiko Aasa <veiko17@disroot.org>

plinth/modules/firewall/components.py

@@ -153,7 +153,12 @@ class Firewall(app.FollowerComponent):
 
 def get_port_forwarding_info(app_):
     """Return a list of ports to be forwarded for this app to work."""
-    info = []
+    from plinth.modules import networks
+    info = {
+        'network_topology_type': networks.get_network_topology_type(),
+        'router_configuration_type': networks.get_router_configuration_type(),
+        'ports': []
+    }
     for component in app_.components.values():
         if not isinstance(component, Firewall):
             continue
@@ -166,6 +171,9 @@ def get_port_forwarding_info(app_):
                 continue
 
             for detail in port['details']:
-                info.append((detail[1].upper(), detail[0]))
+                info['ports'].append({
+                    'protocol': detail[1].upper(),
+                    'ports': detail[0]
+                })
 
     return info

plinth/templates/port-forwarding-info.html

@@ -4,33 +4,51 @@
 
 {% load i18n %}
 
-{% if port_forwarding_info %}
+{% if port_forwarding_info.ports %}
   <h3>{% trans "Port Forwarding" %}</h3>
 
   <p>
-    {% blocktrans trimmed %}
+    {% url 'networks:index' as networks_url %}
-      If your FreedomBox is behind a router, you will need to set up port
+    {% if port_forwarding_info.network_topology_type != "to_router" %}
-      forwarding on your router. You should forward the following ports for
+      {% blocktrans trimmed %}
-      {{ service_name }}:
+        Your FreedomBox is <a href="{{ networks_url }}">not behind a router</a>.
-    {% endblocktrans %}
+        No action is necessary.
+      {% endblocktrans %}
+      <span class="fa fa-check" aria-hidden="true"></span>
+    {% elif port_forwarding_info.router_configuration_type == 'dmz' %}
+      {% blocktrans trimmed %}
+        Your FreedomBox is <a href="{{ networks_url }}"> behind a router</a> and
+        you are using the DMZ feature to forward all ports. No further router
+        configuration is necessary.
+      {% endblocktrans %}
+      <span class="fa fa-check" aria-hidden="true"></span>
+    {% else %}
+      {% blocktrans trimmed %}
+        Your FreedomBox is <a href="{{ networks_url }}">behind a router</a> and
+        you are not using the DMZ feature. You will need to set up port
+        forwarding on your router. You should forward the following ports for
+        {{ service_name }}:
+      {% endblocktrans %}
+
+      <table class="table table-condensed">
+        <thead>
+          <tr>
+            <th>{% trans "Protocol" %}</th>
+            <th>{% trans "From Router/WAN Ports" %}</th>
+            <th>{% blocktrans %}To {{box_name}} Ports{% endblocktrans %}</th>
+          </tr>
+        </thead>
+        <tbody>
+          {% for port in port_forwarding_info.ports %}
+          <tr>
+            <td>{{ port.protocol }}</td>
+            <td>{{ port.ports }}</td>
+            <td>{{ port.ports }}</td>
+          </tr>
+          {% endfor %}
+        </tbody>
+      </table>
+    {% endif %}
   </p>
 
-  <table class="table table-condensed">
-    <thead>
-      <tr>
-        <th>{% trans "Protocol" %}</th>
-        <th>{% trans "From Router/WAN Ports" %}</th>
-        <th>{% blocktrans %}To {{box_name}} Ports{% endblocktrans %}</th>
-      </tr>
-    </thead>
-    <tbody>
-      {% for port in port_forwarding_info %}
-        <tr>
-          <td>{{ port.0 }}</td>
-          <td>{{ port.1 }}</td>
-          <td>{{ port.1 }}</td>
-        </tr>
-      {% endfor %}
-    </tbody>
-  </table>
 {% endif %}