Index: src/maintenancemode/admin.py
===================================================================
--- src/maintenancemode/admin.py	(revision 0)
+++ src/maintenancemode/admin.py	(revision 0)
@@ -0,0 +1,26 @@
+from django import forms
+from django.contrib import admin
+from django.utils.translation import ugettext_lazy as _
+from maintenancemode.models import AllowedPath
+
+class AllowedPathForm(forms.ModelForm):
+    path = forms.RegexField(
+        label=_("Path"), max_length=100, regex=r'^[-\w/]+$',
+        help_text=_("Case-sensitive and recursive: <em>/weblog/</em> match "
+                    "<em>/weblog/2009/05/01/...</em>"),
+        error_message = _("This value must contain only letters, numbers,"
+                          " underscores, dashes or slashes.")
+    )
+
+    class Meta:
+        model = AllowedPath
+
+class AllowedPathAdmin(admin.ModelAdmin):
+    fieldsets = (
+        (None, {'fields': ('path', 'apply_on')}),
+    )
+    list_filter = ('apply_on',)
+    list_display = ('path', 'get_domain')
+    search_fields = ('path',)
+
+admin.site.register(AllowedPath, AllowedPathAdmin)

Property changes on: src/maintenancemode/admin.py
___________________________________________________________________
Name: svn:keywords
   + Date Revision Author HeadURL Id
Name: svn:eol-style
   + native

Index: src/maintenancemode/middleware.py
===================================================================
--- src/maintenancemode/middleware.py	(revision 10)
+++ src/maintenancemode/middleware.py	(working copy)
@@ -1,5 +1,7 @@
 from django.conf import settings
 from django.core import urlresolvers
+from maintenancemode.models import AllowedPath
+from maintenancemode.conf.settings import MAINTENANCE_MODE, ALLOWED_PATHS
 
 from django.conf.urls import defaults
 defaults.handler503 = 'maintenancemode.views.defaults.temporary_unavailable'
@@ -7,15 +9,30 @@
 
 class MaintenanceModeMiddleware(object):
     def process_request(self, request):
-        # Check if maintenance mode is activated, if not set default to False
-        if getattr(settings, 'MAINTENANCE_MODE', False):
-            # Check if the user doing the request is logged in and a staff member
-            if hasattr(request, 'user') and request.user.is_staff:
-                # Let Django normally handle the request
-                return None
+        if not MAINTENANCE_MODE:
+            # let Django normally handle the request
+            return None
 
-            # Otherwise show the user the 503 page
-            resolver = urlresolvers.get_resolver(None)
-        
-            callback, param_dict = resolver._resolve_special('503')
-            return callback(request, **param_dict)
\ No newline at end of file
+        # Allow acess if the user doing the request is logged in and a
+        # staff member.
+        if hasattr(request, 'user') and request.user.is_staff:
+            return None
+
+        resolver = urlresolvers.get_resolver(None)
+        callback, param_dict = resolver._resolve_special('503')
+
+        if not settings.DATABASE_ENGINE == 'dummy':
+            try:
+                # append allowed paths from database
+                query_set = AllowedPath.on_site.all()
+                ALLOWED_PATHS.extend(query_set.values_list('path', flat=True))
+            except:
+                # show the user the 503 page if database error
+                return callback(request, **param_dict)
+
+        # allow access if path starts with some path in ``allowed_paths``
+        if True in map(request.path.startswith, ALLOWED_PATHS):
+            return None
+
+        # otherwise, show the user the 503 page
+        return callback(request, **param_dict)
Index: src/maintenancemode/conf/settings.py
===================================================================
--- src/maintenancemode/conf/settings.py	(revision 0)
+++ src/maintenancemode/conf/settings.py	(revision 0)
@@ -0,0 +1,33 @@
+"""
+maintenancemode application settings.
+
+If you not configure the settings below in your own project settings.py,
+they assume default values::
+
+    MAINTENANCE_MODE
+        Boolean. Enable/disable maintenance mode.
+        Default: False
+
+    MAINTENANCE_MODE_ALLOWED_PATHS
+        A list with paths can be acessed in maintenance mode.
+        Example: ['/admin', '/contact']
+        Default: []
+
+        Note::
+          The paths are case-sensitive, need starts with '/' and are
+          recusive: '/weblog' match '/weblog/2009/05/01', '/' match all
+          web site.
+
+     Some observations:
+
+     * If you uses a database, and the database is down, a maintenance
+       page is displayed;
+
+     * If user is logged in and staff member, the maintenance page is
+       never displayed.
+"""
+
+from django.conf import settings
+
+MAINTENANCE_MODE = getattr(settings, 'MAINTENANCE_MODE', False)
+ALLOWED_PATHS = list(getattr(settings, 'MAINTENANCE_MODE_ALLOWED_PATHS', []))

Property changes on: src/maintenancemode/conf/settings.py
___________________________________________________________________
Name: svn:keywords
   + Date Revision Author HeadURL Id
Name: svn:eol-style
   + native

Index: src/maintenancemode/models.py
===================================================================
--- src/maintenancemode/models.py	(revision 0)
+++ src/maintenancemode/models.py	(revision 0)
@@ -0,0 +1,43 @@
+from django.contrib.sites.managers import CurrentSiteManager
+from django.contrib.sites.models import Site
+from django.db import models
+from django.db.models import Manager
+from django.utils.translation import ugettext_lazy as _
+
+class AllowedPath(models.Model):
+    path = models.CharField(
+        _('path'),
+        max_length=255,
+        db_index=True,
+        help_text=_('Allowed path in maintenance mode. '
+                    'Example: <em>/admin</em> (needs start with <em>/</em>).'),
+    )
+    apply_on = models.ManyToManyField(
+        Site,
+        default=str(Site.objects.get_current().id),
+        verbose_name=_('apply on')
+    )
+
+    objects = Manager()
+    on_site = CurrentSiteManager('apply_on')
+
+    class Meta:
+        ordering = ('path',)
+        verbose_name = _('allowed path')
+        verbose_name_plural = _('allowed paths')
+
+    def __unicode__(self):
+        return '%s' % self.path
+
+    def get_domain(self):
+        return Site.objects.get_current().domain
+    get_domain.short_description = _('domain')
+
+# signals
+from django.db.models import signals
+
+def allowed_path_pre_save(sender, instance, signal, *args, **kwargs):
+    if not instance.path.startswith('/'):
+        instance.path = '/' + instance.path
+
+signals.pre_save.connect(allowed_path_pre_save, sender=AllowedPath)

Property changes on: src/maintenancemode/models.py
___________________________________________________________________
Name: svn:keywords
   + Date Revision Author HeadURL Id
Name: svn:eol-style
   + native

Index: src/maintenancemode/views/defaults.py
===================================================================
--- src/maintenancemode/views/defaults.py	(revision 10)
+++ src/maintenancemode/views/defaults.py	(working copy)
@@ -1,6 +1,5 @@
 from django.conf import settings
 from django.template import Context, RequestContext, loader
-
 from maintenancemode import http
 
 def temporary_unavailable(request, template_name='503.html'):
@@ -11,7 +10,7 @@
     Templates: `503.html`
     Context:
         request_path
-            The path of the requested URL (e.g., '/app/pages/bad_page/')
+            The path of the requested URL (e.g., '/app/pages/bad_page/').
     """
     t = loader.get_template(template_name) # You need to create a 503.html template.
-    return http.HttpResponseTemporaryUnavailable(t.render(Context({})))
\ No newline at end of file
+    return http.HttpResponseTemporaryUnavailable(t.render(Context({})))