diff options
Diffstat (limited to 'parts/django/django/middleware/common.py')
| -rw-r--r-- | parts/django/django/middleware/common.py | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/parts/django/django/middleware/common.py b/parts/django/django/middleware/common.py deleted file mode 100644 index 0be89d4..0000000 --- a/parts/django/django/middleware/common.py +++ /dev/null @@ -1,147 +0,0 @@ -import re - -from django.conf import settings -from django import http -from django.core.mail import mail_managers -from django.utils.http import urlquote -from django.core import urlresolvers -from django.utils.hashcompat import md5_constructor - -class CommonMiddleware(object): - """ - "Common" middleware for taking care of some basic operations: - - - Forbids access to User-Agents in settings.DISALLOWED_USER_AGENTS - - - URL rewriting: Based on the APPEND_SLASH and PREPEND_WWW settings, - this middleware appends missing slashes and/or prepends missing - "www."s. - - - If APPEND_SLASH is set and the initial URL doesn't end with a - slash, and it is not found in urlpatterns, a new URL is formed by - appending a slash at the end. If this new URL is found in - urlpatterns, then an HTTP-redirect is returned to this new URL; - otherwise the initial URL is processed as usual. - - - ETags: If the USE_ETAGS setting is set, ETags will be calculated from - the entire page content and Not Modified responses will be returned - appropriately. - """ - - 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']): - 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 _is_valid_path(request.path_info, urlconf) and - _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.GET: - newurl += '?' + request.META['QUERY_STRING'] - return http.HttpResponsePermanentRedirect(newurl) - - def process_response(self, request, response): - "Send broken link emails and calculate the Etag, if needed." - if response.status_code == 404: - if settings.SEND_BROKEN_LINK_EMAILS: - # If the referrer was from an internal link or a non-search-engine site, - # send a note to the managers. - domain = request.get_host() - referer = request.META.get('HTTP_REFERER', None) - is_internal = _is_internal_request(domain, referer) - path = request.get_full_path() - if referer and not _is_ignorable_404(path) and (is_internal or '?' not in referer): - ua = request.META.get('HTTP_USER_AGENT', '<none>') - ip = request.META.get('REMOTE_ADDR', '<none>') - mail_managers("Broken %slink on %s" % ((is_internal and 'INTERNAL ' or ''), domain), - "Referrer: %s\nRequested URL: %s\nUser agent: %s\nIP address: %s\n" \ - % (referer, request.get_full_path(), ua, ip)) - return response - - # Use ETags, if requested. - if settings.USE_ETAGS: - if response.has_header('ETag'): - etag = response['ETag'] - else: - etag = '"%s"' % md5_constructor(response.content).hexdigest() - if response.status_code >= 200 and response.status_code < 300 and request.META.get('HTTP_IF_NONE_MATCH') == etag: - cookies = response.cookies - response = http.HttpResponseNotModified() - response.cookies = cookies - else: - response['ETag'] = etag - - return response - -def _is_ignorable_404(uri): - """ - Returns True if a 404 at the given URL *shouldn't* notify the site managers. - """ - for start in settings.IGNORABLE_404_STARTS: - if uri.startswith(start): - return True - for end in settings.IGNORABLE_404_ENDS: - if uri.endswith(end): - return True - return False - -def _is_internal_request(domain, referer): - """ - Returns true if the referring URL is the same domain as the current request. - """ - # Different subdomains are treated as different domains. - return referer is not None and re.match("^https?://%s/" % re.escape(domain), referer) - -def _is_valid_path(path, urlconf=None): - """ - Returns True if the given path resolves against the default URL resolver, - False otherwise. - - This is a convenience method to make working with "is this a match?" cases - easier, avoiding unnecessarily indented try...except blocks. - """ - try: - urlresolvers.resolve(path, urlconf) - return True - except urlresolvers.Resolver404: - return False - |