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# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import ipaddress
import ssl
from typing import List
from typing import Callable
from typing import Any
from . import ValidatorError
from . import check_re_match
from . import check_any
from .basic import valid_number
from .basic import valid_stripped_string_not_empty
# =====
def valid_ip_or_host(arg: Any) -> str:
name = "IP address or RFC-1123 hostname"
return check_any(
arg=valid_stripped_string_not_empty(arg, name),
name=name,
validators=[
valid_ip,
valid_rfc_host,
],
)
def valid_ip(arg: Any, v4: bool=True, v6: bool=True) -> str:
assert v4 or v6
validators: List[Callable] = []
if v4:
validators.append(lambda arg: str(ipaddress.IPv4Address(arg)))
if v6:
validators.append(lambda arg: str(ipaddress.IPv6Address(arg)))
name = "IP address"
return check_any(
arg=valid_stripped_string_not_empty(arg, name),
name=name,
validators=validators,
)
def valid_rfc_host(arg: Any) -> str:
# http://stackoverflow.com/questions/106179/regular-expression-to-match-hostname-or-ip-address
pattern = r"^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*" \
r"([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$"
return check_re_match(arg, "RFC-1123 hostname", pattern)
def valid_port(arg: Any) -> int:
return int(valid_number(arg, min=0, max=65535, name="TCP/UDP port"))
def valid_mac(arg: Any) -> str:
pattern = ":".join([r"[0-9a-fA-F]{2}"] * 6)
return check_re_match(arg, "MAC address", pattern).lower()
def valid_ssl_ciphers(arg: Any) -> str:
name = "SSL ciphers"
arg = valid_stripped_string_not_empty(arg, name)
try:
ssl.SSLContext().set_ciphers(arg)
except Exception as err:
raise ValidatorError(f"The argument {arg!r} is not a valid {name}: {str(err)}")
return arg
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