Add External form auth plugin

[cascardo/ipsilon.git] / ipsilon / util / page.py

diff --git a/ipsilon/util/page.py b/ipsilon/util/page.py
index 2cdca1c..aad91fc 100755 (executable)
--- a/ipsilon/util/page.py
+++ b/ipsilon/util/page.py
@@ -18,20 +18,36 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from ipsilon.util.user import UserSession
+from urllib import unquote
 import cherrypy
 
 
-def protect():
-    UserSession().remote_login()
+def admin_protect(fn):
+
+    def check(*args, **kwargs):
+        if UserSession().get_user().is_admin:
+            return fn(*args, **kwargs)
+
+        raise cherrypy.HTTPError(403)
+
+    return check
 
 
 class Page(object):
-    def __init__(self, site):
-        if not 'template_env' in site:
+    def __init__(self, site, form=False):
+        if 'template_env' not in site:
             raise ValueError('Missing template environment')
         self._site = site
         self.basepath = cherrypy.config.get('base.mount', "")
         self.user = None
+        self._is_form_page = form
+
+    def _compare_urls(self, url1, url2):
+        u1 = unquote(url1)
+        u2 = unquote(url2)
+        if u1 == u2:
+            return True
+        return False
 
     def __call__(self, *args, **kwargs):
         # pylint: disable=star-args
@@ -42,9 +58,27 @@ class Page(object):
             if callable(op) and getattr(self, args[0]+'.exposed', None):
                 return op(*args[1:], **kwargs)
         else:
-            op = getattr(self, 'root', None)
-            if callable(op):
-                return op(*args, **kwargs)
+            if self._is_form_page:
+                self._debug("method: %s" % cherrypy.request.method)
+                op = getattr(self, cherrypy.request.method, None)
+                if callable(op):
+                    # Basic CSRF protection
+                    if cherrypy.request.method != 'GET':
+                        url = cherrypy.url(relative=False)
+                        if 'referer' not in cherrypy.request.headers:
+                            self._debug("Missing referer in %s request to %s"
+                                        % (cherrypy.request.method, url))
+                            raise cherrypy.HTTPError(403)
+                        referer = cherrypy.request.headers['referer']
+                        if not self._compare_urls(referer, url):
+                            self._debug("Wrong referer %s in request to %s"
+                                        % (referer, url))
+                            raise cherrypy.HTTPError(403)
+                    return op(*args, **kwargs)
+            else:
+                op = getattr(self, 'root', None)
+                if callable(op):
+                    return op(*args, **kwargs)
 
         return self.default(*args, **kwargs)
 
@@ -62,7 +96,17 @@ class Page(object):
         m.update(kwargs)
         return t.render(**m)
 
+    def _debug(self, fact):
+        if cherrypy.config.get('debug', False):
+            cherrypy.log(fact)
+
     def default(self, *args, **kwargs):
         raise cherrypy.HTTPError(404)
 
+    def add_subtree(self, name, page):
+        self.__dict__[name] = page
+
+    def del_subtree(self, name):
+        del self.__dict__[name]
+
     exposed = True