Added a local cache to NavigationMapper - avoids some unpickling costs.

[philo.git] / philo / validators.py

diff --git a/philo/validators.py b/philo/validators.py
index c8e5dc9..349dd56 100644 (file)
--- a/philo/validators.py
+++ b/philo/validators.py
@@ -1,13 +1,15 @@
-from django.utils.translation import ugettext_lazy as _
-from django.core.validators import RegexValidator
+import re
+
 from django.core.exceptions import ValidationError
 from django.template import Template, Parser, Lexer, TOKEN_BLOCK, TOKEN_VAR, TemplateSyntaxError
 from django.utils import simplejson as json
 from django.utils.html import escape, mark_safe
-import re
+from django.utils.translation import ugettext_lazy as _
+
 from philo.utils import LOADED_TEMPLATE_ATTR
 
 
+#: Tags which are considered insecure and are therefore always disallowed by secure :class:`TemplateValidator` instances.
 INSECURE_TAGS = (
        'load',
        'extends',
@@ -16,34 +18,8 @@ INSECURE_TAGS = (
 )
 
 
-class RedirectValidator(RegexValidator):
-       """Based loosely on the URLValidator, but no option to verify_exists"""
-       regex = re.compile(
-               r'^(?:https?://' # http:// or https://
-               r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+[A-Z]{2,6}\.?|' #domain...
-               r'localhost|' #localhost...
-               r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' # ...or ip
-               r'(?::\d+)?' # optional port
-               r'(?:/?|[/?#]?\S+)|'
-               r'[^?#\s]\S*)$',
-               re.IGNORECASE)
-       message = _(u'Enter a valid absolute or relative redirect target')
-
-
-class URLLinkValidator(RegexValidator):
-       """Based loosely on the URLValidator, but no option to verify_exists"""
-       regex = re.compile(
-               r'^(?:https?://' # http:// or https://
-               r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+[A-Z]{2,6}\.?|' #domain...
-               r'localhost|' #localhost...
-               r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' # ...or ip
-               r'(?::\d+)?' # optional port
-               r'|)' # also allow internal links
-               r'(?:/?|[/?#]?\S+)$', re.IGNORECASE)
-       message = _(u'Enter a valid absolute or relative redirect target')
-
-
 def json_validator(value):
+       """Validates whether ``value`` is a valid json string."""
        try:
                json.loads(value)
        except Exception, e:
@@ -128,6 +104,14 @@ def linebreak_iter(template_source):
 
 
 class TemplateValidator(object): 
+       """
+       Validates whether a string represents valid Django template code.
+       
+       :param allow: ``None`` or an iterable of tag names which are explicitly allowed. If provided, tags whose names are not in the iterable will cause a ValidationError to be raised if they are used in the template code.
+       :param disallow: ``None`` or an iterable of tag names which are explicitly allowed. If provided, tags whose names are in the iterable will cause a ValidationError to be raised if they are used in the template code. If a tag's name is in ``allow`` and ``disallow``, it will be disallowed.
+       :param secure: If the validator is set to secure, it will automatically disallow the tag names listed in :const:`INSECURE_TAGS`. Defaults to ``True``.
+       
+       """
        def __init__(self, allow=None, disallow=None, secure=True):
                self.allow = allow
                self.disallow = disallow