Add wifi scan page to networks module.

plinth/modules/networks/networks.py

@@ -31,6 +31,8 @@ from plinth import network
 
 subsubmenu = [{'url': reverse_lazy('networks:index'),
                'text': _('Network Connections')},
+              {'url': reverse_lazy('networks:scan'),
+               'text': _('Nearby Wi-Fi Networks')},
               {'url': reverse_lazy('networks:add'),
                'text': _('Add Connection')}]
 
@@ -136,6 +138,16 @@ def deactivate(request, conn_id):
     return redirect(reverse_lazy('networks:index'))
 
 
+@login_required
+def scan(request):
+    """Show a list of nearby visible wifi APs."""
+    aps = network.wifi_scan()
+    return TemplateResponse(request, 'wifi_scan.html',
+                            {'title': _('Nearby Wi-Fi Networks'),
+                             'subsubmenu': subsubmenu,
+                             'aps': aps})
+
+
 @login_required
 def add(request):
     """Serve the connection type selection form."""

plinth/modules/networks/templates/wifi_scan.html

@@ -0,0 +1,40 @@
+{% extends "base.html" %}
+{% comment %}
+#
+# This file is part of Plinth.
+#
+# 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 bootstrap %}
+
+{% block content %}
+
+  <div class="row">
+    <div class="col-sm-6">
+      <div class="list-group">
+        {% for ap in aps %}
+        <div class="list-group-item clearfix">
+	  <a display="inline-block" width="40%">{{ ap.ssid }}</a>
+	  <span class="btn btn-primary btn-xs pull-right">
+	    {{ ap.strength }}%
+	  </span>
+        </div>
+        {% endfor %}
+      </div>
+    </div>
+  </div>
+
+{% endblock %}

plinth/modules/networks/urls.py

@@ -31,6 +31,7 @@ urlpatterns = patterns(
         'activate', name='activate'),
     url(r'^sys/networks/(?P<conn_id>[\w.@+-]+)/deactivate/$',
         'deactivate', name='deactivate'),
+    url(r'^sys/networks/scan/$', 'scan', name='scan'),
     url(r'^sys/networks/add/$', 'add', name='add'),
     url(r'^sys/networks/add/ethernet/$', 'add_ethernet', name='add_ethernet'),
     url(r'^sys/networks/add/wifi/$', 'add_wifi', name='add_wifi'),

plinth/network.py

@@ -235,3 +235,14 @@ def delete_connection(name):
             _('Failed to delete connection %s: '
               'Connection not found.') % name)
     conn.Delete()
+
+
+def wifi_scan():
+    aps = []
+    for dev in NetworkManager.NetworkManager.GetDevices():
+        if dev.DeviceType != NetworkManager.NM_DEVICE_TYPE_WIFI:
+            continue
+        for ap in dev.SpecificDevice().GetAccessPoints():
+            aps.append({'ssid': ap.Ssid,
+                        'strength': ord(ap.Strength)})
+    return aps