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"""
This compat module handles various platform specific calls that do not fall into one
particular category.
"""
from __future__ import absolute_import
import select
import sys
try:
from win32com.shell import shell as shellwin32 # pylint: disable=import-error
POSIX_MODE = False
except ImportError: # pragma: no cover
POSIX_MODE = True
from certbot import errors
from certbot.compat import os
# For Linux: define OS specific standard binary directories
STANDARD_BINARY_DIRS = ["/usr/sbin", "/usr/local/bin", "/usr/local/sbin"] if POSIX_MODE else []
def raise_for_non_administrative_windows_rights():
# type: () -> None
"""
On Windows, raise if current shell does not have the administrative rights.
Do nothing on Linux.
:raises .errors.Error: If the current shell does not have administrative rights on Windows.
"""
if not POSIX_MODE and shellwin32.IsUserAnAdmin() == 0: # pragma: no cover
raise errors.Error('Error, certbot must be run on a shell with administrative rights.')
def readline_with_timeout(timeout, prompt):
# type: (float, str) -> str
"""
Read user input to return the first line entered, or raise after specified timeout.
:param float timeout: The timeout in seconds given to the user.
:param str prompt: The prompt message to display to the user.
:returns: The first line entered by the user.
:rtype: str
"""
try:
# Linux specific
#
# Call to select can only be done like this on UNIX
rlist, _, _ = select.select([sys.stdin], [], [], timeout)
if not rlist:
raise errors.Error(
"Timed out waiting for answer to prompt '{0}'".format(prompt))
return rlist[0].readline()
except OSError:
# Windows specific
#
# No way with select to make a timeout to the user input on Windows,
# as select only supports socket in this case.
# So no timeout on Windows for now.
return sys.stdin.readline()
WINDOWS_DEFAULT_FOLDERS = {
'config': 'C:\\Certbot',
'work': 'C:\\Certbot\\lib',
'logs': 'C:\\Certbot\\log',
}
LINUX_DEFAULT_FOLDERS = {
'config': '/etc/letsencrypt',
'work': '/var/lib/letsencrypt',
'logs': '/var/log/letsencrypt',
}
def get_default_folder(folder_type):
# type: (str) -> str
"""
Return the relevant default folder for the current OS
:param str folder_type: The type of folder to retrieve (config, work or logs)
:returns: The relevant default folder.
:rtype: str
"""
if os.name != 'nt':
# Linux specific
return LINUX_DEFAULT_FOLDERS[folder_type]
# Windows specific
return WINDOWS_DEFAULT_FOLDERS[folder_type]
def underscores_for_unsupported_characters_in_path(path):
# type: (str) -> str
"""
Replace unsupported characters in path for current OS by underscores.
:param str path: the path to normalize
:return: the normalized path
:rtype: str
"""
if os.name != 'nt':
# Linux specific
return path
# Windows specific
drive, tail = os.path.splitdrive(path)
return drive + tail.replace(':', '_')