mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-08-22 07:00:29 +00:00
146 lines
5.0 KiB
Python
146 lines
5.0 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 ctypes
|
|
from ctypes import wintypes
|
|
from typing import Iterable, List
|
|
|
|
import RNS.vendor.ifaddr._shared as shared
|
|
|
|
NO_ERROR = 0
|
|
ERROR_BUFFER_OVERFLOW = 111
|
|
MAX_ADAPTER_NAME_LENGTH = 256
|
|
MAX_ADAPTER_DESCRIPTION_LENGTH = 128
|
|
MAX_ADAPTER_ADDRESS_LENGTH = 8
|
|
AF_UNSPEC = 0
|
|
|
|
|
|
class SOCKET_ADDRESS(ctypes.Structure):
|
|
_fields_ = [('lpSockaddr', ctypes.POINTER(shared.sockaddr)), ('iSockaddrLength', wintypes.INT)]
|
|
|
|
|
|
class IP_ADAPTER_UNICAST_ADDRESS(ctypes.Structure):
|
|
pass
|
|
|
|
|
|
IP_ADAPTER_UNICAST_ADDRESS._fields_ = [
|
|
('Length', wintypes.ULONG),
|
|
('Flags', wintypes.DWORD),
|
|
('Next', ctypes.POINTER(IP_ADAPTER_UNICAST_ADDRESS)),
|
|
('Address', SOCKET_ADDRESS),
|
|
('PrefixOrigin', ctypes.c_uint),
|
|
('SuffixOrigin', ctypes.c_uint),
|
|
('DadState', ctypes.c_uint),
|
|
('ValidLifetime', wintypes.ULONG),
|
|
('PreferredLifetime', wintypes.ULONG),
|
|
('LeaseLifetime', wintypes.ULONG),
|
|
('OnLinkPrefixLength', ctypes.c_uint8),
|
|
]
|
|
|
|
|
|
class IP_ADAPTER_ADDRESSES(ctypes.Structure):
|
|
pass
|
|
|
|
|
|
IP_ADAPTER_ADDRESSES._fields_ = [
|
|
('Length', wintypes.ULONG),
|
|
('IfIndex', wintypes.DWORD),
|
|
('Next', ctypes.POINTER(IP_ADAPTER_ADDRESSES)),
|
|
('AdapterName', ctypes.c_char_p),
|
|
('FirstUnicastAddress', ctypes.POINTER(IP_ADAPTER_UNICAST_ADDRESS)),
|
|
('FirstAnycastAddress', ctypes.c_void_p),
|
|
('FirstMulticastAddress', ctypes.c_void_p),
|
|
('FirstDnsServerAddress', ctypes.c_void_p),
|
|
('DnsSuffix', ctypes.c_wchar_p),
|
|
('Description', ctypes.c_wchar_p),
|
|
('FriendlyName', ctypes.c_wchar_p),
|
|
]
|
|
|
|
|
|
iphlpapi = ctypes.windll.LoadLibrary("Iphlpapi") # type: ignore
|
|
|
|
|
|
def enumerate_interfaces_of_adapter(
|
|
nice_name: str, address: IP_ADAPTER_UNICAST_ADDRESS
|
|
) -> Iterable[shared.IP]:
|
|
|
|
# Iterate through linked list and fill list
|
|
addresses = [] # type: List[IP_ADAPTER_UNICAST_ADDRESS]
|
|
while True:
|
|
addresses.append(address)
|
|
if not address.Next:
|
|
break
|
|
address = address.Next[0]
|
|
|
|
for address in addresses:
|
|
ip = shared.sockaddr_to_ip(address.Address.lpSockaddr)
|
|
assert ip is not None, f'sockaddr_to_ip({address.Address.lpSockaddr}) returned None'
|
|
network_prefix = address.OnLinkPrefixLength
|
|
yield shared.IP(ip, network_prefix, nice_name)
|
|
|
|
|
|
def get_adapters(include_unconfigured: bool = False) -> Iterable[shared.Adapter]:
|
|
|
|
# Call GetAdaptersAddresses() with error and buffer size handling
|
|
|
|
addressbuffersize = wintypes.ULONG(15 * 1024)
|
|
retval = ERROR_BUFFER_OVERFLOW
|
|
while retval == ERROR_BUFFER_OVERFLOW:
|
|
addressbuffer = ctypes.create_string_buffer(addressbuffersize.value)
|
|
retval = iphlpapi.GetAdaptersAddresses(
|
|
wintypes.ULONG(AF_UNSPEC),
|
|
wintypes.ULONG(0),
|
|
None,
|
|
ctypes.byref(addressbuffer),
|
|
ctypes.byref(addressbuffersize),
|
|
)
|
|
if retval != NO_ERROR:
|
|
raise ctypes.WinError() # type: ignore
|
|
|
|
# Iterate through adapters fill array
|
|
address_infos = [] # type: List[IP_ADAPTER_ADDRESSES]
|
|
address_info = IP_ADAPTER_ADDRESSES.from_buffer(addressbuffer)
|
|
while True:
|
|
address_infos.append(address_info)
|
|
if not address_info.Next:
|
|
break
|
|
address_info = address_info.Next[0]
|
|
|
|
# Iterate through unicast addresses
|
|
result = [] # type: List[shared.Adapter]
|
|
for adapter_info in address_infos:
|
|
|
|
# We don't expect non-ascii characters here, so encoding shouldn't matter
|
|
name = adapter_info.AdapterName.decode()
|
|
nice_name = adapter_info.Description
|
|
index = adapter_info.IfIndex
|
|
|
|
if adapter_info.FirstUnicastAddress:
|
|
ips = enumerate_interfaces_of_adapter(
|
|
adapter_info.FriendlyName, adapter_info.FirstUnicastAddress[0]
|
|
)
|
|
ips = list(ips)
|
|
result.append(shared.Adapter(name, nice_name, ips, index=index))
|
|
elif include_unconfigured:
|
|
result.append(shared.Adapter(name, nice_name, [], index=index))
|
|
|
|
return result
|