mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-11-22 21:50:18 +00:00
94 lines
3.6 KiB
Python
94 lines
3.6 KiB
Python
# Copyright (c) 2014 Stefan C. Mueller
|
|
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to
|
|
# deal in the Software without restriction, including without limitation the
|
|
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
# sell copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in
|
|
# all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
# IN THE SOFTWARE.
|
|
|
|
|
|
import os
|
|
import ctypes.util
|
|
import ipaddress
|
|
import collections
|
|
import socket
|
|
|
|
from typing import Iterable, Optional
|
|
|
|
import RNS.vendor.ifaddr._shared as shared
|
|
|
|
class ifaddrs(ctypes.Structure):
|
|
pass
|
|
|
|
|
|
ifaddrs._fields_ = [
|
|
('ifa_next', ctypes.POINTER(ifaddrs)),
|
|
('ifa_name', ctypes.c_char_p),
|
|
('ifa_flags', ctypes.c_uint),
|
|
('ifa_addr', ctypes.POINTER(shared.sockaddr)),
|
|
('ifa_netmask', ctypes.POINTER(shared.sockaddr)),
|
|
]
|
|
|
|
libc = ctypes.CDLL(ctypes.util.find_library("socket" if os.uname()[0] == "SunOS" else "c"), use_errno=True) # type: ignore
|
|
|
|
|
|
def get_adapters(include_unconfigured: bool = False) -> Iterable[shared.Adapter]:
|
|
|
|
addr0 = addr = ctypes.POINTER(ifaddrs)()
|
|
retval = libc.getifaddrs(ctypes.byref(addr))
|
|
if retval != 0:
|
|
eno = ctypes.get_errno()
|
|
raise OSError(eno, os.strerror(eno))
|
|
|
|
ips = collections.OrderedDict()
|
|
|
|
def add_ip(adapter_name: str, ip: Optional[shared.IP]) -> None:
|
|
if adapter_name not in ips:
|
|
index = None # type: Optional[int]
|
|
try:
|
|
# Mypy errors on this when the Windows CI runs:
|
|
# error: Module has no attribute "if_nametoindex"
|
|
index = socket.if_nametoindex(adapter_name) # type: ignore
|
|
except (OSError, AttributeError):
|
|
pass
|
|
ips[adapter_name] = shared.Adapter(adapter_name, adapter_name, [], index=index)
|
|
if ip is not None:
|
|
ips[adapter_name].ips.append(ip)
|
|
|
|
while addr:
|
|
name = addr[0].ifa_name.decode(encoding='UTF-8')
|
|
ip_addr = shared.sockaddr_to_ip(addr[0].ifa_addr)
|
|
if ip_addr:
|
|
if addr[0].ifa_netmask and not addr[0].ifa_netmask[0].sa_familiy:
|
|
addr[0].ifa_netmask[0].sa_familiy = addr[0].ifa_addr[0].sa_familiy
|
|
netmask = shared.sockaddr_to_ip(addr[0].ifa_netmask)
|
|
if isinstance(netmask, tuple):
|
|
netmaskStr = str(netmask[0])
|
|
prefixlen = shared.ipv6_prefixlength(ipaddress.IPv6Address(netmaskStr))
|
|
else:
|
|
assert netmask is not None, f'sockaddr_to_ip({addr[0].ifa_netmask}) returned None'
|
|
netmaskStr = str(f"0.0.0.0/{netmask}")
|
|
prefixlen = ipaddress.IPv4Network(netmaskStr).prefixlen
|
|
ip = shared.IP(ip_addr, prefixlen, name)
|
|
add_ip(name, ip)
|
|
else:
|
|
if include_unconfigured:
|
|
add_ip(name, None)
|
|
addr = addr[0].ifa_next
|
|
|
|
libc.freeifaddrs(addr0)
|
|
|
|
return ips.values()
|