upstream/certbot
1
0
Fork 0
mirror of https://github.com/certbot/certbot.git synced 2026-06-05 06:42:10 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

Raise error with long paths on Windows

Browse source
This commit is contained in:
Adrien Ferrand 2021-01-04 21:25:38 +01:00
parent 5eec69236d
commit 5ce5ca9caa
1 changed files with 10 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
certbot/certbot/compat/filesystem.py
View file

@ -393,17 +393,23 @@ def readlink(link_path):
:param str link_path: The symlink path to resolve
:return: The path the symlink points to
:returns: str
:raise: ValueError if a long path (260> characters) is encountered on Windows
"""
path = os.readlink(link_path)
if POSIX_MODE or not path.startswith('\\\\?\\'):
return path
# At that point, we are on Windows and the path returned uses the long form (Python 3.8+).
# Max length of a normal path is 260 characters on Windows, including the non printable
# termination character "<NUL>". The termination character is not included in Python
# strings, giving a max length of 259 characters, + 4 characters for the extended form
# prefix, to an effective max length of the studied path of 263 characters.
if not POSIX_MODE and path.startswith('\\\\?\\') and len(path) < 264:
path = path[4:]
# prefix, to an effective max length 263 characters on a string representing a normal path.
if len(path) < 264:
return path[4:]
return path
raise ValueError("Long paths are not supported by Certbot on Windows.")
# On Windows is_executable run from an unprivileged shell may claim that a path is