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from . import transport
import logging
import binascii
import socket
logger = logging.getLogger(__name__)
'''
Implementations of Command:
MUST implement:
execute(self, **kwargs)
CAN implement:
_init(self, ...)
SHOULDNT implement:
__init__(self, endpoint_info: dict, **kwargs):
'''
class Command:
# TODO do we need config for commands?
def __init__(self, endpoint_info: dict, **kwargs):
self._endpoint_info = endpoint_info
self._init(**kwargs)
def _init(self, transport: transport.Transport):
self._transport = transport
def execute(self, **kwargs):
raise NotImplemented
class NotifyCommand(Command):
def _init(self, transport: transport.SshTransport):
self._transport = transport
def execute(self, msg: str):
self._transport.execHandleStderror(f'notify-send "{msg}"')
'''
WakeOnLanCommand sends a WOL magic packet to wake a device.
Transport: MetaDataTransport with attribute 'mac' set to the devices'
MAC Address in the standard XX:XX:XX:XX:XX:XX format.
'''
class WakeOnLanCommand(Command):
def _init(self):
if not 'mac' in self._endpoint_info:
logger.error('MAC Address is not set in endpoint info.')
self._mac = self._endpoint_info.get('mac', "00:00:00:00:00")
def execute(self):
mac_bytes = b''
try:
mac_bytes = binascii.unhexlify(self._mac.replace(':',''))
except binascii.Error:
logger.error(f'MAC Address "{self._mac}" failed to parse to binary')
return
if len(mac_bytes) != 6:
logger.error(f'MAC Address "{self._mac}" is malformed')
return
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
magic = b'\xff' * 6 + mac_bytes * 16
s.sendto(magic, ('<broadcast>', 7))
logger.debug(f'Sent magic packet to {self._mac}')
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