mirror of
https://expo.survex.com/repositories/troggle/.git
synced 2024-12-18 14:32:19 +00:00
78 lines
2.8 KiB
Python
78 lines
2.8 KiB
Python
from django import http
|
|
from django.conf import settings
|
|
from django.urls import Resolver404, resolve
|
|
|
|
"""Non-standard django middleware is loaded from this file.
|
|
|
|
"""
|
|
todo = """SmartAppendSlashMiddleware(object) Not Working.
|
|
It needs re-writing to be compatible with Django v2.0 and later
|
|
"""
|
|
|
|
|
|
class SmartAppendSlashMiddleware(object):
|
|
"""
|
|
"SmartAppendSlash" middleware for taking care of URL rewriting.
|
|
|
|
This middleware appends a missing slash, if:
|
|
* the SMART_APPEND_SLASH setting is True
|
|
* the URL without the slash does not exist
|
|
* the URL with an appended slash does exist.
|
|
Otherwise it won't touch the URL.
|
|
"""
|
|
|
|
def process_request(self, request):
|
|
"""Called for every url so return as quickly as possible
|
|
Append a slash if SMART_APPEND_SLASH is set, the resulting URL resolves and it doesn't without the /
|
|
"""
|
|
if not settings.SMART_APPEND_SLASH:
|
|
return None
|
|
|
|
if request.path.endswith("/"):
|
|
return None
|
|
|
|
if request.path.endswith("_edit"):
|
|
return None
|
|
|
|
host = http.HttpRequest.get_host(request)
|
|
old_url = [host, request.path]
|
|
if _resolves(old_url[1]):
|
|
return None
|
|
|
|
# So: it does not resolve according to our criteria, i.e. _edit doesn't count
|
|
new_url = old_url[:]
|
|
new_url[1] = new_url[1] + "/"
|
|
if not _resolves(new_url[1]):
|
|
return None
|
|
else:
|
|
if settings.DEBUG and request.method == "POST":
|
|
# replace this exception with a redirect to an error page
|
|
raise RuntimeError(
|
|
f"You called this URL via POST, but the URL doesn't end in a slash and you have SMART_APPEND_SLASH set. Django can't redirect to the slash URL while maintaining POST data. Change your form to point to {new_url[0]}{new_url[1]} (note the trailing slash), or set SMART_APPEND_SLASH=False in your Django settings."
|
|
)
|
|
if new_url != old_url:
|
|
# Redirect
|
|
if new_url[0]:
|
|
newurl = f"{request.is_secure() and 'https' or 'http'}://{new_url[0]}{new_url[1]}"
|
|
else:
|
|
newurl = new_url[1]
|
|
if request.GET:
|
|
newurl += "?" + request.GET.urlencode()
|
|
return http.HttpResponsePermanentRedirect(newurl)
|
|
|
|
return None
|
|
|
|
|
|
def _resolves(url):
|
|
try:
|
|
# If the URL does not resolve, the function raises a Resolver404 exception (a subclass of Http404)
|
|
resolve(url)
|
|
# this will ALWAYS be resolved by expopages because it will produce pagenotfound if not the thing asked for
|
|
# so handle this in expopages, not in middleware
|
|
return True
|
|
except Resolver404:
|
|
return False
|
|
except:
|
|
print(url)
|
|
raise
|