mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

gh-99418: Make urllib.parse.urlparse enforce that a scheme must begin with an alphabetical ASCII character. (#99421)

Browse source 
Prevent urllib.parse.urlparse from accepting schemes that don't begin with an alphabetical ASCII character.

RFC 3986 defines a scheme like this: `scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )`
RFC 2234 defines an ALPHA like this: `ALPHA = %x41-5A / %x61-7A`

The WHATWG URL spec defines a scheme like this:
`"A URL-scheme string must be one ASCII alpha, followed by zero or more of ASCII alphanumeric, U+002B (+), U+002D (-), and U+002E (.)."`
This commit is contained in:
Ben Kallus 2022-11-13 18:25:55 +00:00 • committed by GitHub
parent 50b0415127
commit 439b9cfaf4
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 21 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Lib/urllib/parse.py
View file

@ -460,7 +460,7 @@ def urlsplit(url, scheme='', allow_fragments=True):
allow_fragments = bool(allow_fragments)
netloc = query = fragment = ''
i = url.find(':')
if i > 0:
if i > 0 and url[0].isascii() and url[0].isalpha():
for c in url[:i]:
if c not in scheme_chars:
break