mallformated URL from document referrer

Question

I am passing referrer URL from javascript to flask entry point function

but when I receive on the flask side it looks like this http%3A%2F%2F127.0.0.1%3A5000%2F

instead of http:\\127.0.0.1:5000 how can I fix this ? should I fix it on the client end or on the flask end?

I tried `decodeURI( url)` as well as `decodeURIComponent(url)` but it doest work — Ciasto piekarz, Aug 21 '17 at 17:03

vchslv13 · Accepted Answer · 2017-08-21T17:56:09.340

0

First of all - it`s just the URL with escaped special characters.

Python 3:

>>> from urllib.parse import unquote
>>> unquote('http%3A%2F%2F127.0.0.1%3A5000%2F')
'http://127.0.0.1:5000/'

Python 2:

>>> from urllib import unquote
>>> unquote('http%3A%2F%2F127.0.0.1%3A5000%2F')
'http://127.0.0.1:5000/'

So, I think, you should just unquote it when using it on Flask end.

Also, take in account that there are 2 versions of unquote - unquote() and unquote_plus(). As the manual says: unquote_plus() is like unquote(), but 'also replaces plus signs by spaces, as required for unquoting HTML form values.' https://docs.python.org/2.7/library/urllib.html#urllib.unquote

edited Aug 21 '17 at 17:56

answered Aug 21 '17 at 17:43

vchslv13

73
7

`ImportError: No module named parse` – Ciasto piekarz Aug 21 '17 at 17:46
It's Python 3 in my example. For Python 2 use: `from urllib import unquote` – vchslv13 Aug 21 '17 at 17:46
use what I think u missed it ? – Ciasto piekarz Aug 21 '17 at 17:47
Yes, I did :) Edited the comment now. – vchslv13 Aug 21 '17 at 17:48
I`ve added little more info to the answer. You can check it, if you want. (Offtop: Do notifications about edits come to author of the question?) – vchslv13 Aug 21 '17 at 17:58
@vchslv13 no they don't – Mangohero1 Aug 21 '17 at 18:10
@mangoHero1 Got it, thanks :) – vchslv13 Aug 21 '17 at 18:18

mallformated URL from document referrer

1 Answers1