--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/views/decorators/csrf.py	Wed Jun 02 18:57:35 2010 +0200
@@ -0,0 +1,48 @@
+from django.middleware.csrf import CsrfViewMiddleware
+from django.utils.decorators import decorator_from_middleware, available_attrs
+
+try:
+    from functools import wraps
+except ImportError:
+    from django.utils.functional import wraps  # Python 2.4 fallback.
+
+csrf_protect = decorator_from_middleware(CsrfViewMiddleware)
+csrf_protect.__name__ = "csrf_protect"
+csrf_protect.__doc__ = """
+This decorator adds CSRF protection in exactly the same way as
+CsrfViewMiddleware, but it can be used on a per view basis.  Using both, or
+using the decorator multiple times, is harmless and efficient.
+"""
+
+def csrf_response_exempt(view_func):
+    """
+    Modifies a view function so that its response is exempt
+    from the post-processing of the CSRF middleware.
+    """
+    def wrapped_view(*args, **kwargs):
+        resp = view_func(*args, **kwargs)
+        resp.csrf_exempt = True
+        return resp
+    return wraps(view_func, assigned=available_attrs(view_func))(wrapped_view)
+
+def csrf_view_exempt(view_func):
+    """
+    Marks a view function as being exempt from CSRF view protection.
+    """
+    # We could just do view_func.csrf_exempt = True, but decorators
+    # are nicer if they don't have side-effects, so we return a new
+    # function.
+    def wrapped_view(*args, **kwargs):
+        return view_func(*args, **kwargs)
+    wrapped_view.csrf_exempt = True
+    return wraps(view_func, assigned=available_attrs(view_func))(wrapped_view)
+
+def csrf_exempt(view_func):
+    """
+    Marks a view function as being exempt from the CSRF checks
+    and post processing.
+
+    This is the same as using both the csrf_view_exempt and
+    csrf_response_exempt decorators.
+    """
+    return csrf_response_exempt(csrf_view_exempt(view_func))