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import os.path
import pwd
from twisted.python.compat import _PY3
from landscape.lib.encoding import encode_if_needed
class UnknownUserError(Exception):
pass
def get_user_info(username=None):
uid = None
gid = None
path = None
if username is not None:
if _PY3:
username_str = username
else:
username_str = encode_if_needed(username)
try:
# XXX: We have a situation with the system default FS encoding with
# Python 3 here: We have to pass a string to pwd.getpwnam(), but if
# the default does not support unicode characters, a
# UnicodeEncodeError will be thrown. This edge case can be harmful,
# if the user was added with a less restrictive encoding active,
# and is now retrieved with LC_ALL=C for example, as it is during
# automatic test runs. This should not be a problem under normal
# circumstances. Alternatively, a different way of parsing
# /etc/passwd would have to be implemented. A simple
# locale.setlocale() to use UTF-8 was not successful.
info = pwd.getpwnam(username_str)
except (KeyError, UnicodeEncodeError):
raise UnknownUserError(u"Unknown user '%s'" % username)
uid = info.pw_uid
gid = info.pw_gid
path = info.pw_dir
if not os.path.exists(path):
path = "/"
return (uid, gid, path)
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