Add filters feature for plugins

* larpe/admin/hosts.ptl: allows to add custom filters
 * larpe/plugins/site_authentication/ciril_net_rh.py: add logout support
   with a filter

git-svn-id: svn+ssh://labs.libre-entreprise.org/svnroot/larpe@476 3ed937ae-f919-0410-9a43-8e6f19e4ba6e

larpe/trunk/larpe/admin/hosts.ptl

@@ -791,8 +791,12 @@ POST request. You can desactivate some or all of them, or change their value.'''
             self.host.http_headers[name] = old_value
         self.host.store()
 
-    def generate_apache_filter(self):
+    def generate_apache_filters(self):
         # Set Python filter path for Apache configuration
+        site_auth = site_authentication.get_site_authentication(self.host)
+        filters = site_auth.get_filters()
+        replace_login_form = self.host.auth_form_places == 'form_everywhere' and \
+                self.host.auth_form_action
         python_path = os.path.join(self.host.site_dir, 'filters')
         if python_path not in self.host.apache_python_paths:
             self.host.apache_python_paths.append(python_path)
@@ -800,16 +804,25 @@ POST request. You can desactivate some or all of them, or change their value.'''
         # Write Python filter
         python_file = open(os.path.join(self.host.site_dir, 'filters', 'output_replace_form.py'), 'w')
         python_file.write(open(OUTPUT_FILTER_BASE).read())
-        python_file.write('''\
-def filter_page(filter, page):
+        if filters or replace_login_form:
+            python_file.write("def filter_page(filter, page):\n")
+            if replace_login_form:
+                python_file.write('''\
     current_form = re.compile('<form [^>]*?action="%(auth_form_action)s".*?>.*?</form>', re.DOTALL)
-    return current_form.sub('<form method="post" action="/liberty/%(name)s/login"><input type="submit" value="Connexion" /></form>', page)
-''' % { 'auth_form_action': self.host.auth_form_action, 'name': self.host.name })
-        python_file.close()
+    page = current_form.sub('<form method="post" action="/liberty/%(name)s/login"><input type="submit" value="Connexion" /></form>', page)'''
+    % { 'auth_form_action': self.host.auth_form_action, 'name': self.host.name })
+            for filter in filters:
+                python_file.write("    r = re.compile(r\"\"\"%s\"\"\", re.DOTALL)\n" % filter["re"])
+                python_file.write("    page = r.sub(r\"\"\"%s\"\"\", page)\n" % filter["sub"])
+            python_file.write("    return page\n")
+            python_file.close()
+            # Set Python filter for Apache configuration
+            if not 'output_replace_form' in self.host.apache_output_python_filters:
+                self.host.apache_output_python_filters.append('output_replace_form')
+        else:
+            if 'output_replace_form' in self.host.apache_output_python_filters:
+                self.host.apache_output_python_filters.remove('output_replace_form')
 
-        # Set Python filter for Apache configuration
-        if not 'output_replace_form' in self.host.apache_output_python_filters:
-            self.host.apache_output_python_filters.append('output_replace_form')
 
     def sso_init_link [html] (self):
         form = self.form_sso_init_link()
@@ -859,13 +872,7 @@ authenticate on any of these pages, and don't need to be redirected to a separat
         for f in fields:
             setattr(self.host, f, form.get_widget(f).parse())
         self.host.auth_form_url = self.host.auth_url
-
-        if self.host.auth_form_places == 'form_everywhere' and self.host.auth_form_action:
-            self.generate_apache_filter()
-        else:
-            if 'output_replace_form' in self.host.apache_output_python_filters:
-                self.host.apache_output_python_filters.remove('output_replace_form')
-
+        self.generate_apache_filters()
         self.host.store()
         write_apache2_vhosts()
 

larpe/trunk/larpe/plugins/site_authentication/ciril_net_rh.py

@@ -1,3 +1,4 @@
+
 import re
 
 from quixote import redirect
@@ -31,9 +32,24 @@ class CirilSiteAuthentication(SiteAuthentication):
         match = regexp.findall(data)
         if match:
             success = True
-            return_content = '<script language="JavaScript" type="text/javascript">window.open("%s", "_parent")</script>' % match[0]
+            return_content = redirect(match[0])
 
         return success, return_content
 
+    def get_filters(self):
+        """ Rewrite the logout link """
+        filters = []
+        logout = {}
+        if not hasattr(self.host, 'base_url'):
+            return None
+        base_url_tokens = self.host.base_url.split('/')
+        base_url_tokens[-1] = 'logout'
+        new_logout_url = '/'.join(base_url_tokens)
+        logout["re"] = """(<a.*?href=["']).*?(["'].*?>D.*?connexion</a>)"""
+        logout["sub"] = r"\1%s\2" % new_logout_url
+        filters.append(logout)
+        return filters
+
+
 site_authentication_plugins.register(CirilSiteAuthentication)
 

larpe/trunk/larpe/site_authentication.ptl

@@ -105,6 +105,18 @@ class SiteAuthentication:
                     value = values[0], options = options)
         return form
 
+    def get_filters(self):
+        """ Allows to filters the page
+        Example with a logout link:
+            filters = []
+            filter = {}
+            filer["re"] = "<a.*?href=\"home.php\.*?\">Logout</a>"
+            filer["sub"] = "<a href=\"/logout\">Logout</a>" % logout_url
+            filters.append(filter)
+            return filters
+        """
+        return None
+
     def submit_local_auth_form(self, form):
         username = form.get_widget('username').parse()
         password = form.get_widget('password').parse()
@@ -279,9 +291,6 @@ class SiteAuthentication:
         return success, return_content
 
     def local_logout(self, federation=None, user=None):
-        """
-        TODO : recode with twill
-        """
         if federation is None and user is not None:
             federations = Federation.select(lambda x: user.name_identifiers[0] in x.name_identifiers)
             if federations: