def process_request(self, request):
"""
Check for denied User-Agents and rewrite the URL based on
settings.APPEND_SLASH and settings.PREPEND_WWW
"""
# Check for denied User-Agents
if 'HTTP_USER_AGENT' in request.META:
for user_agent_regex in settings.DISALLOWED_USER_AGENTS:
if user_agent_regex.search(request.META['HTTP_USER_AGENT']):
logger.warning('Forbidden (User agent): %s', request.path,
extra={
'status_code': 403,
'request': request
}
)
return http.HttpResponseForbidden('<h1>Forbidden</h1>')
# Check for a redirect based on settings.APPEND_SLASH
# and settings.PREPEND_WWW
host = request.get_host()
old_url = [host, request.path]
new_url = old_url[:]
if (settings.PREPEND_WWW and old_url[0] and
not old_url[0].startswith('www.')):
new_url[0] = 'www.' + old_url[0]
# Append a slash if APPEND_SLASH is set and the URL doesn't have a
# trailing slash and there is no pattern for the current path
if settings.APPEND_SLASH and (not old_url[1].endswith('/')):
urlconf = getattr(request, 'urlconf', None)
if (not urlresolvers.is_valid_path(request.path_info, urlconf) and
urlresolvers.is_valid_path("%s/" % request.path_info, urlconf)):
new_url[1] = new_url[1] + '/'
if settings.DEBUG and request.method == 'POST':
raise RuntimeError((""
"You called this URL via POST, but the URL doesn't end "
"in a slash and you have APPEND_SLASH set. Django can't "
"redirect to the slash URL while maintaining POST data. "
"Change your form to point to %s%s (note the trailing "
"slash), or set APPEND_SLASH=False in your Django "
"settings.") % (new_url[0], new_url[1]))
if new_url == old_url:
# No redirects required.
return
if new_url[0]:
newurl = "%s://%s%s" % (
request.is_secure() and 'https' or 'http',
new_url[0], urlquote(new_url[1]))
else:
newurl = urlquote(new_url[1])
if request.META.get('QUERY_STRING', ''):
newurl += '?' + request.META['QUERY_STRING']
return http.HttpResponsePermanentRedirect(newurl)
def process_response(self, request, response):
language = translation.get_language()
if (response.status_code == 404 and
not translation.get_language_from_path(request.path_info)
and self.is_language_prefix_patterns_used()):
urlconf = getattr(request, 'urlconf', None)
language_path = '/%s%s' % (language, request.path_info)
if settings.APPEND_SLASH and not language_path.endswith('/'):
language_path = language_path + '/'
if is_valid_path(language_path, urlconf):
language_url = "%s://%s/%s%s" % (
request.is_secure() and 'https' or 'http',
request.get_host(), language, request.get_full_path())
return HttpResponseRedirect(language_url)
translation.deactivate()
patch_vary_headers(response, ('Accept-Language',))
if 'Content-Language' not in response:
response['Content-Language'] = language
return response