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Diffstat (limited to 'lib/python2.7/site-packages/django/middleware/common.py')
| -rw-r--r-- | lib/python2.7/site-packages/django/middleware/common.py | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/lib/python2.7/site-packages/django/middleware/common.py b/lib/python2.7/site-packages/django/middleware/common.py deleted file mode 100644 index 2c76c47..0000000 --- a/lib/python2.7/site-packages/django/middleware/common.py +++ /dev/null @@ -1,174 +0,0 @@ -import hashlib -import logging -import re -import warnings - -from django.conf import settings -from django.core.mail import mail_managers -from django.core import urlresolvers -from django import http -from django.utils.encoding import force_text -from django.utils.http import urlquote -from django.utils import six - - -logger = logging.getLogger('django.request') - - -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']): - 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" % ( - 'https' if request.is_secure() else 'http', - new_url[0], urlquote(new_url[1])) - else: - newurl = urlquote(new_url[1]) - if request.META.get('QUERY_STRING', ''): - if six.PY3: - newurl += '?' + request.META['QUERY_STRING'] - else: - # `query_string` is a bytestring. Appending it to the unicode - # string `newurl` will fail if it isn't ASCII-only. This isn't - # allowed; only broken software generates such query strings. - # Better drop the invalid query string than crash (#15152). - try: - newurl += '?' + request.META['QUERY_STRING'].decode() - except UnicodeDecodeError: - pass - return http.HttpResponsePermanentRedirect(newurl) - - def process_response(self, request, response): - """ - Calculate the ETag, if needed. - """ - if settings.SEND_BROKEN_LINK_EMAILS: - warnings.warn("SEND_BROKEN_LINK_EMAILS is deprecated. " - "Use BrokenLinkEmailsMiddleware instead.", - PendingDeprecationWarning, stacklevel=2) - BrokenLinkEmailsMiddleware().process_response(request, response) - - if settings.USE_ETAGS: - if response.has_header('ETag'): - etag = response['ETag'] - elif response.streaming: - etag = None - else: - etag = '"%s"' % hashlib.md5(response.content).hexdigest() - if etag is not None: - if (200 <= 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 - - -class BrokenLinkEmailsMiddleware(object): - - def process_response(self, request, response): - """ - Send broken link emails for relevant 404 NOT FOUND responses. - """ - if response.status_code == 404 and not settings.DEBUG: - domain = request.get_host() - path = request.get_full_path() - referer = force_text(request.META.get('HTTP_REFERER', ''), errors='replace') - - if not self.is_ignorable_request(request, path, domain, referer): - ua = request.META.get('HTTP_USER_AGENT', '<none>') - ip = request.META.get('REMOTE_ADDR', '<none>') - mail_managers( - "Broken %slink on %s" % ( - ('INTERNAL ' if self.is_internal_request(domain, referer) else ''), - domain - ), - "Referrer: %s\nRequested URL: %s\nUser agent: %s\n" - "IP address: %s\n" % (referer, path, ua, ip), - fail_silently=True) - return response - - def is_internal_request(self, domain, referer): - """ - Returns True if the referring URL is the same domain as the current request. - """ - # Different subdomains are treated as different domains. - return bool(re.match("^https?://%s/" % re.escape(domain), referer)) - - def is_ignorable_request(self, request, uri, domain, referer): - """ - Returns True if the given request *shouldn't* notify the site managers. - """ - # '?' in referer is identified as search engine source - if (not referer or - (not self.is_internal_request(domain, referer) and '?' in referer)): - return True - return any(pattern.search(uri) for pattern in settings.IGNORABLE_404_URLS) |