New *information* page to display usefull information for super administrators.

see #304 & #307

modoboa/admin/templates/admin/information.html

@@ -0,0 +1,17 @@
+{% load i18n libextras %}
+<h2>{% trans "Information" %} <small>{% trans "Various information about Modoboa" %}</small></h2><hr>
+<p>Modoboa <strong>{% get_version %}</strong> {% trans "is currently in use." %}</p>
+
+<h3>{% trans "Active users" %}</h3>
+<table class="table">
+  <tr>
+    <th>{% trans "Name" %}</th>
+    <th>{% trans "Group name" %}</th>
+    <th>{% trans "Last login" %}</th>
+  </tr>
+  {% connected_users as users %}{% for u in users %}<tr>
+    <td>{{ u.username }}</td>
+    <td>{{ u.group }}</td>
+    <td>{{ u.last_login }}</td>
+  </tr>{% endfor %}
+</table>

modoboa/admin/templatetags/admin_extras.py

@@ -54,6 +54,10 @@ def settings_menu(selection, user):
          "url" : "parameters/",
          "img" : "",
          "label" : _("Parameters")},
+        {"name" : "info",
+         "class" : "ajaxlink",
+         "url" : "info/",
+         "label" : _("Information")}
         ]
     return render_to_string('common/menu.html', {
             "entries" : entries, 

modoboa/admin/urls.py

@@ -16,6 +16,7 @@ urlpatterns = patterns(
     (r'^settings/parameters/save/$', 'saveparameters'),
     (r'^settings/extensions/$', 'viewextensions'),
     (r'^settings/extensions/save/$', 'saveextensions'),
+    (r'^settings/info/$', 'information'),
     
     (r'^permissions/remove/$', 'remove_permission'),
 

modoboa/admin/views.py

@@ -560,6 +560,14 @@ def saveextensions(request):
             status="ok", respmsg=_("Modifications applied.")
             ))
 
+@login_required
+@user_passes_test(lambda u: u.is_superuser)
+def information(request, tplname="admin/information.html"):
+    return ajax_simple_response({
+            "status" : "ok", 
+            "content" : render_to_string(tplname, {})
+            })
+
 def import_domain(user, row):
     """Specific code for domains import"""
     dom = Domain()

modoboa/lib/templatetags/libextras.py

@@ -1,12 +1,14 @@
 # coding: utf-8
 import os
-import datetime
+from django.utils import timezone
 from django.conf import settings
 from django import template
 from django.contrib import messages
 from django.template import Template, Context
 from django.template.loader import render_to_string
 from django.core.urlresolvers import reverse
+from django.contrib.sessions.models import Session
+from datetime import datetime
 from django.utils.translation import ugettext as _, ugettext_lazy
 from modoboa.lib import events
 from modoboa.lib.sysutils import exec_cmd
@@ -16,16 +18,8 @@ register = template.Library()
 
 @register.simple_tag
 def get_version():
-    if os.path.isdir("%s/.hg" % settings.MODOBOA_DIR):
-        version = "dev-"
-        code, output = exec_cmd("hg id -i", cwd=settings.MODOBOA_DIR)
-        version += output.rstrip()
-        return version
-    elif os.path.exists("%s/VERSION" % settings.MODOBOA_DIR):
-        code, output = exec_cmd("cat %s/VERSION" % settings.MODOBOA_DIR)
-        return output.rstrip()
-    else:
-        return "Unknown"
+    import pkg_resources
+    return pkg_resources.get_distribution("modoboa").version
 
 @register.simple_tag
 def join(items, sep=','):
@@ -180,3 +174,32 @@ def progress_color(value):
 @register.filter
 def fromunix(value):
     return datetime.datetime.fromtimestamp(int(value))
+
+class ConnectedUsers(template.Node):
+    def __init__(self, varname):
+        self.varname = varname
+
+    def render(self, context):
+        from modoboa.admin.models import User
+        
+        sessions = Session.objects.filter(expire_date__gte=timezone.now())
+        uid_list = []
+        
+        # Build a list of user ids from that query
+        for session in sessions:
+            data = session.get_decoded()
+            uid = data.get('_auth_user_id', None)
+            if uid:
+                uid_list.append(uid)
+
+        # Query all logged in users based on id list
+        context[self.varname] = [User.objects.get(pk=uid) for uid in uid_list]
+        return ''
+
+@register.tag
+def connected_users(parser, token):
+    try:
+        tag, a, varname = token.split_contents()
+    except ValueError:
+        raise template.TemplateSyntaxError('connected_users usage: {% connected_users as users %}')
+    return ConnectedUsers(varname)