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import logging
import os
import socket
import struct
from typing import Union, Dict, Any, List
from .exceptions import HardwareIncompatibilityError
from .general import SysCommand
from .output import log
from .storage import storage
def get_hw_addr(ifname :str) -> str:
import fcntl
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
info = fcntl.ioctl(s.fileno(), 0x8927, struct.pack('256s', bytes(ifname, 'utf-8')[:15]))
return ':'.join('%02x' % b for b in info[18:24])
def list_interfaces(skip_loopback :bool = True) -> Dict[str, str]:
interfaces = {}
for index, iface in socket.if_nameindex():
if skip_loopback and iface == "lo":
continue
mac = get_hw_addr(iface).replace(':', '-').lower()
interfaces[mac] = iface
return interfaces
def check_mirror_reachable() -> bool:
log("Testing connectivity to the Arch Linux mirrors ...", level=logging.INFO)
if SysCommand("pacman -Sy").exit_code == 0:
return True
elif os.geteuid() != 0:
log("check_mirror_reachable() uses 'pacman -Sy' which requires root.", level=logging.ERROR, fg="red")
return False
def update_keyring() -> bool:
log("Updating archlinux-keyring ...", level=logging.INFO)
if SysCommand("pacman -Sy --noconfirm archlinux-keyring").exit_code == 0:
return True
elif os.geteuid() != 0:
log("update_keyring() uses 'pacman -Sy archlinux-keyring' which requires root.", level=logging.ERROR, fg="red")
return False
def enrich_iface_types(interfaces: Union[Dict[str, Any], List[str]]) -> Dict[str, str]:
result = {}
for iface in interfaces:
if os.path.isdir(f"/sys/class/net/{iface}/bridge/"):
result[iface] = 'BRIDGE'
elif os.path.isfile(f"/sys/class/net/{iface}/tun_flags"):
# ethtool -i {iface}
result[iface] = 'TUN/TAP'
elif os.path.isdir(f"/sys/class/net/{iface}/device"):
if os.path.isdir(f"/sys/class/net/{iface}/wireless/"):
result[iface] = 'WIRELESS'
else:
result[iface] = 'PHYSICAL'
else:
result[iface] = 'UNKNOWN'
return result
def get_interface_from_mac(mac :str) -> str:
return list_interfaces().get(mac.lower(), None)
def wireless_scan(interface :str) -> None:
interfaces = enrich_iface_types(list_interfaces().values())
if interfaces[interface] != 'WIRELESS':
raise HardwareIncompatibilityError(f"Interface {interface} is not a wireless interface: {interfaces}")
if not (output := SysCommand(f"iwctl station {interface} scan")).exit_code == 0:
raise SystemError(f"Could not scan for wireless networks: {output}")
if '_WIFI' not in storage:
storage['_WIFI'] = {}
if interface not in storage['_WIFI']:
storage['_WIFI'][interface] = {}
storage['_WIFI'][interface]['scanning'] = True
# TODO: Full WiFi experience might get evolved in the future, pausing for now 2021-01-25
def get_wireless_networks(interface :str) -> None:
# TODO: Make this oneliner pritter to check if the interface is scanning or not.
# TODO: Rename this to list_wireless_networks() as it doesn't return anything
if '_WIFI' not in storage or interface not in storage['_WIFI'] or storage['_WIFI'][interface].get('scanning', False) is False:
import time
wireless_scan(interface)
time.sleep(5)
for line in SysCommand(f"iwctl station {interface} get-networks"):
print(line)
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