247 lines
8.3 KiB
Python
247 lines
8.3 KiB
Python
from datetime import datetime
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from enum import Enum
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import logging
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import glob
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import os
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import time
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import subprocess
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import yaml
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import json
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import shutil
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import pwnagotchi
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# https://stackoverflow.com/questions/823196/yaml-merge-in-python
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def merge_config(user, default):
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if isinstance(user, dict) and isinstance(default, dict):
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for k, v in default.items():
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if k not in user:
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user[k] = v
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else:
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user[k] = merge_config(user[k], v)
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return user
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def load_config(args):
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default_config_path = os.path.dirname(args.config)
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if not os.path.exists(default_config_path):
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os.makedirs(default_config_path)
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ref_defaults_file = os.path.join(os.path.dirname(pwnagotchi.__file__), 'defaults.yml')
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ref_defaults_data = None
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if not os.path.exists(args.config):
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# logging not configured here yet
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print("copying %s to %s ..." % (ref_defaults_file, args.config))
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shutil.copy(ref_defaults_file, args.config)
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else:
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with open(ref_defaults_file) as fp:
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ref_defaults_data = fp.read()
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with open(args.config) as fp:
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defaults_data = fp.read()
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if ref_defaults_data != defaults_data:
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print("!!! file in %s is different than release defaults, overwriting !!!" % args.config)
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shutil.copy(ref_defaults_file, args.config)
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with open(args.config) as fp:
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config = yaml.safe_load(fp)
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if os.path.exists(args.user_config):
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with open(args.user_config) as fp:
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user_config = yaml.safe_load(fp)
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# if the file is empty, safe_load will return None and merge_config will boom.
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if user_config:
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config = merge_config(user_config, config)
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return config
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def setup_logging(args, config):
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formatter = logging.Formatter("[%(asctime)s] [%(levelname)s] %(message)s")
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root = logging.getLogger()
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root.setLevel(logging.DEBUG if args.debug else logging.INFO)
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if config['main']['log']:
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file_handler = logging.FileHandler(config['main']['log'])
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file_handler.setFormatter(formatter)
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root.addHandler(file_handler)
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console_handler = logging.StreamHandler()
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console_handler.setFormatter(formatter)
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root.addHandler(console_handler)
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def secs_to_hhmmss(secs):
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mins, secs = divmod(secs, 60)
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hours, mins = divmod(mins, 60)
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return '%02d:%02d:%02d' % (hours, mins, secs)
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def total_unique_handshakes(path):
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expr = os.path.join(path, "*.pcap")
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return len(glob.glob(expr))
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def iface_channels(ifname):
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channels = []
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output = subprocess.getoutput("/sbin/iwlist %s freq" % ifname)
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for line in output.split("\n"):
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line = line.strip()
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if line.startswith("Channel "):
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channels.append(int(line.split()[1]))
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return channels
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def led(on=True):
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with open('/sys/class/leds/led0/brightness', 'w+t') as fp:
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fp.write("%d" % (0 if on is True else 1))
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def blink(times=1, delay=0.3):
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for t in range(0, times):
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led(True)
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time.sleep(delay)
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led(False)
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time.sleep(delay)
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led(True)
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class WifiInfo(Enum):
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"""
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Fields you can extract from a pcap file
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"""
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BSSID = 0
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ESSID = 1
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ENCRYPTION = 2
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CHANNEL = 3
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RSSI = 4
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class FieldNotFoundError(Exception):
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pass
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def extract_from_pcap(path, fields):
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"""
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Search in pcap-file for specified information
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path: Path to pcap file
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fields: Array of fields that should be extracted
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If a field is not found, FieldNotFoundError is raised
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"""
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results = dict()
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for field in fields:
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if not isinstance(field, WifiInfo):
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raise TypeError("Invalid field")
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subtypes = set()
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if field == WifiInfo.BSSID:
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from scapy.all import Dot11Beacon, Dot11ProbeResp, Dot11AssoReq, Dot11ReassoReq, Dot11, sniff
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subtypes.add('beacon')
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bpf_filter = " or ".join([f"wlan type mgt subtype {subtype}" for subtype in subtypes])
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packets = sniff(offline=path, filter=bpf_filter)
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try:
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for packet in packets:
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if packet.haslayer(Dot11Beacon):
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if hasattr(packet[Dot11], 'addr3'):
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results[field] = packet[Dot11].addr3
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break
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else: # magic
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raise FieldNotFoundError("Could not find field [BSSID]")
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except Exception:
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raise FieldNotFoundError("Could not find field [BSSID]")
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elif field == WifiInfo.ESSID:
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from scapy.all import Dot11Beacon, Dot11ReassoReq, Dot11AssoReq, Dot11, sniff, Dot11Elt
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subtypes.add('beacon')
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subtypes.add('assoc-req')
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subtypes.add('reassoc-req')
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bpf_filter = " or ".join([f"wlan type mgt subtype {subtype}" for subtype in subtypes])
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packets = sniff(offline=path, filter=bpf_filter)
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try:
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for packet in packets:
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if packet.haslayer(Dot11Elt) and hasattr(packet[Dot11Elt], 'info'):
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results[field] = packet[Dot11Elt].info.decode('utf-8')
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break
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else: # magic
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raise FieldNotFoundError("Could not find field [ESSID]")
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except Exception:
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raise FieldNotFoundError("Could not find field [ESSID]")
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elif field == WifiInfo.ENCRYPTION:
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from scapy.all import Dot11Beacon, sniff
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subtypes.add('beacon')
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bpf_filter = " or ".join([f"wlan type mgt subtype {subtype}" for subtype in subtypes])
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packets = sniff(offline=path, filter=bpf_filter)
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try:
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for packet in packets:
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if packet.haslayer(Dot11Beacon) and hasattr(packet[Dot11Beacon], 'network_stats'):
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stats = packet[Dot11Beacon].network_stats()
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if 'crypto' in stats:
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results[field] = stats['crypto'] # set with encryption types
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break
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else: # magic
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raise FieldNotFoundError("Could not find field [ENCRYPTION]")
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except Exception:
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raise FieldNotFoundError("Could not find field [ENCRYPTION]")
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elif field == WifiInfo.CHANNEL:
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from scapy.all import sniff, RadioTap
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from pwnagotchi.mesh.wifi import freq_to_channel
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packets = sniff(offline=path, count=1)
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try:
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results[field] = freq_to_channel(packets[0][RadioTap].ChannelFrequency)
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except Exception:
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raise FieldNotFoundError("Could not find field [CHANNEL]")
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elif field == WifiInfo.RSSI:
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from scapy.all import sniff, RadioTap
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from pwnagotchi.mesh.wifi import freq_to_channel
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packets = sniff(offline=path, count=1)
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try:
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results[field] = packets[0][RadioTap].dBm_AntSignal
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except Exception:
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raise FieldNotFoundError("Could not find field [RSSI]")
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return results
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class StatusFile(object):
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def __init__(self, path, data_format='raw'):
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self._path = path
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self._updated = None
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self._format = data_format
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self.data = None
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if os.path.exists(path):
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self._updated = datetime.fromtimestamp(os.path.getmtime(path))
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with open(path) as fp:
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if data_format == 'json':
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self.data = json.load(fp)
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else:
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self.data = fp.read()
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def data_field_or(self, name, default=""):
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if self.data is not None and name in self.data:
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return self.data[name]
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return default
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def newer_then_minutes(self, minutes):
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return self._updated is not None and ((datetime.now() - self._updated).seconds / 60) < minutes
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def newer_then_days(self, days):
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return self._updated is not None and (datetime.now() - self._updated).days < days
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def update(self, data=None):
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self._updated = datetime.now()
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self.data = data
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with open(self._path, 'w') as fp:
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if data is None:
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fp.write(str(self._updated))
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elif self._format == 'json':
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json.dump(self.data, fp)
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else:
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fp.write(data)
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