338 lines
12 KiB
Python

from datetime import datetime
from enum import Enum
import logging
import glob
import os
import time
import subprocess
import yaml
import json
import shutil
import toml
import sys
import pwnagotchi
from pwnagotchi.fs import ensure_write
# https://stackoverflow.com/questions/823196/yaml-merge-in-python
def merge_config(user, default):
if isinstance(user, dict) and isinstance(default, dict):
for k, v in default.items():
if k not in user:
user[k] = v
else:
user[k] = merge_config(user[k], v)
return user
def keys_to_str(data):
if isinstance(data,list):
converted_list = list()
for item in data:
if isinstance(item,list) or isinstance(item,dict):
converted_list.append(keys_to_str(item))
else:
converted_list.append(item)
return converted_list
converted_dict = dict()
for key, value in data.items():
if isinstance(value, list) or isinstance(value, dict):
converted_dict[str(key)] = keys_to_str(value)
else:
converted_dict[str(key)] = value
return converted_dict
def load_config(args):
default_config_path = os.path.dirname(args.config)
if not os.path.exists(default_config_path):
os.makedirs(default_config_path)
ref_defaults_file = os.path.join(os.path.dirname(pwnagotchi.__file__), 'defaults.toml')
ref_defaults_data = None
# check for a config.yml file on /boot/
for boot_conf in ['/boot/config.yml', '/boot/config.toml']:
if os.path.exists(boot_conf):
# logging not configured here yet
print("installing %s to %s ...", boot_conf, args.user_config)
# https://stackoverflow.com/questions/42392600/oserror-errno-18-invalid-cross-device-link
shutil.move(boot_conf, args.user_config)
break
# check for an entire pwnagotchi folder on /boot/
if os.path.isdir('/boot/pwnagotchi'):
print("installing /boot/pwnagotchi to /etc/pwnagotchi ...")
shutil.rmtree('/etc/pwnagotchi', ignore_errors=True)
shutil.move('/boot/pwnagotchi', '/etc/')
# if not config is found, copy the defaults
if not os.path.exists(args.config):
print("copying %s to %s ..." % (ref_defaults_file, args.config))
shutil.copy(ref_defaults_file, args.config)
else:
# check if the user messed with the defaults
with open(ref_defaults_file) as fp:
ref_defaults_data = fp.read()
with open(args.config) as fp:
defaults_data = fp.read()
if ref_defaults_data != defaults_data:
print("!!! file in %s is different than release defaults, overwriting !!!" % args.config)
shutil.copy(ref_defaults_file, args.config)
# load the defaults
with open(args.config) as fp:
config = toml.load(fp)
# load the user config
try:
user_config = None
# migrate
yaml_name = args.user_config.replace('.toml', '.yml')
if not os.path.exists(args.user_config) and os.path.exists(yaml_name):
# no toml found; convert yaml
logging.info('Old yaml-config found. Converting to toml...')
with open(args.user_config, 'w') as toml_file, open(yaml_name) as yaml_file:
user_config = yaml.safe_load(yaml_file)
# convert int/float keys to str
user_config = keys_to_str(user_config)
# convert to toml but use loaded yaml
toml.dump(user_config, toml_file)
elif os.path.exists(args.user_config):
with open(args.user_config) as toml_file:
user_config = toml.load(toml_file)
if user_config:
config = merge_config(user_config, config)
except Exception as ex:
logging.error("There was an error processing the configuration file:\n%s ",ex)
sys.exit(1)
# the very first step is to normalize the display name so we don't need dozens of if/elif around
if config['ui']['display']['type'] in ('inky', 'inkyphat'):
config['ui']['display']['type'] = 'inky'
elif config['ui']['display']['type'] in ('papirus', 'papi'):
config['ui']['display']['type'] = 'papirus'
elif config['ui']['display']['type'] in ('oledhat',):
config['ui']['display']['type'] = 'oledhat'
elif config['ui']['display']['type'] in ('ws_1', 'ws1', 'waveshare_1', 'waveshare1'):
config['ui']['display']['type'] = 'waveshare_1'
elif config['ui']['display']['type'] in ('ws_2', 'ws2', 'waveshare_2', 'waveshare2'):
config['ui']['display']['type'] = 'waveshare_2'
elif config['ui']['display']['type'] in ('ws_27inch', 'ws27inch', 'waveshare_27inch', 'waveshare27inch'):
config['ui']['display']['type'] = 'waveshare27inch'
elif config['ui']['display']['type'] in ('ws_29inch', 'ws29inch', 'waveshare_29inch', 'waveshare29inch'):
config['ui']['display']['type'] = 'waveshare29inch'
elif config['ui']['display']['type'] in ('lcdhat',):
config['ui']['display']['type'] = 'lcdhat'
elif config['ui']['display']['type'] in ('dfrobot', 'df'):
config['ui']['display']['type'] = 'dfrobot'
elif config['ui']['display']['type'] in ('ws_154inch', 'ws154inch', 'waveshare_154inch', 'waveshare154inch'):
config['ui']['display']['type'] = 'waveshare154inch'
elif config['ui']['display']['type'] in ('waveshare144lcd', 'ws_144inch', 'ws144inch', 'waveshare_144inch', 'waveshare144inch'):
config['ui']['display']['type'] = 'waveshare144lcd'
elif config['ui']['display']['type'] in ('ws_213d', 'ws213d', 'waveshare_213d', 'waveshare213d'):
config['ui']['display']['type'] = 'waveshare213d'
elif config['ui']['display']['type'] in ('ws_213bc', 'ws213bc', 'waveshare_213bc', 'waveshare213bc'):
config['ui']['display']['type'] = 'waveshare213bc'
elif config['ui']['display']['type'] in ('spotpear24inch'):
config['ui']['display']['type'] = 'spotpear24inch'
else:
print("unsupported display type %s" % config['ui']['display']['type'])
sys.exit(1)
return config
def secs_to_hhmmss(secs):
mins, secs = divmod(secs, 60)
hours, mins = divmod(mins, 60)
return '%02d:%02d:%02d' % (hours, mins, secs)
def total_unique_handshakes(path):
expr = os.path.join(path, "*.pcap")
return len(glob.glob(expr))
def iface_channels(ifname):
channels = []
output = subprocess.getoutput("/sbin/iwlist %s freq" % ifname)
for line in output.split("\n"):
line = line.strip()
if line.startswith("Channel "):
channels.append(int(line.split()[1]))
return channels
def led(on=True):
with open('/sys/class/leds/led0/brightness', 'w+t') as fp:
fp.write("%d" % (0 if on is True else 1))
def blink(times=1, delay=0.3):
for t in range(0, times):
led(True)
time.sleep(delay)
led(False)
time.sleep(delay)
led(True)
class WifiInfo(Enum):
"""
Fields you can extract from a pcap file
"""
BSSID = 0
ESSID = 1
ENCRYPTION = 2
CHANNEL = 3
RSSI = 4
class FieldNotFoundError(Exception):
pass
def extract_from_pcap(path, fields):
"""
Search in pcap-file for specified information
path: Path to pcap file
fields: Array of fields that should be extracted
If a field is not found, FieldNotFoundError is raised
"""
results = dict()
for field in fields:
if not isinstance(field, WifiInfo):
raise TypeError("Invalid field")
subtypes = set()
if field == WifiInfo.BSSID:
from scapy.all import Dot11Beacon, Dot11ProbeResp, Dot11AssoReq, Dot11ReassoReq, Dot11, sniff
subtypes.add('beacon')
bpf_filter = " or ".join([f"wlan type mgt subtype {subtype}" for subtype in subtypes])
packets = sniff(offline=path, filter=bpf_filter)
try:
for packet in packets:
if packet.haslayer(Dot11Beacon):
if hasattr(packet[Dot11], 'addr3'):
results[field] = packet[Dot11].addr3
break
else: # magic
raise FieldNotFoundError("Could not find field [BSSID]")
except Exception:
raise FieldNotFoundError("Could not find field [BSSID]")
elif field == WifiInfo.ESSID:
from scapy.all import Dot11Beacon, Dot11ReassoReq, Dot11AssoReq, Dot11, sniff, Dot11Elt
subtypes.add('beacon')
subtypes.add('assoc-req')
subtypes.add('reassoc-req')
bpf_filter = " or ".join([f"wlan type mgt subtype {subtype}" for subtype in subtypes])
packets = sniff(offline=path, filter=bpf_filter)
try:
for packet in packets:
if packet.haslayer(Dot11Elt) and hasattr(packet[Dot11Elt], 'info'):
results[field] = packet[Dot11Elt].info.decode('utf-8')
break
else: # magic
raise FieldNotFoundError("Could not find field [ESSID]")
except Exception:
raise FieldNotFoundError("Could not find field [ESSID]")
elif field == WifiInfo.ENCRYPTION:
from scapy.all import Dot11Beacon, sniff
subtypes.add('beacon')
bpf_filter = " or ".join([f"wlan type mgt subtype {subtype}" for subtype in subtypes])
packets = sniff(offline=path, filter=bpf_filter)
try:
for packet in packets:
if packet.haslayer(Dot11Beacon) and hasattr(packet[Dot11Beacon], 'network_stats'):
stats = packet[Dot11Beacon].network_stats()
if 'crypto' in stats:
results[field] = stats['crypto'] # set with encryption types
break
else: # magic
raise FieldNotFoundError("Could not find field [ENCRYPTION]")
except Exception:
raise FieldNotFoundError("Could not find field [ENCRYPTION]")
elif field == WifiInfo.CHANNEL:
from scapy.all import sniff, RadioTap
from pwnagotchi.mesh.wifi import freq_to_channel
packets = sniff(offline=path, count=1)
try:
results[field] = freq_to_channel(packets[0][RadioTap].ChannelFrequency)
except Exception:
raise FieldNotFoundError("Could not find field [CHANNEL]")
elif field == WifiInfo.RSSI:
from scapy.all import sniff, RadioTap
from pwnagotchi.mesh.wifi import freq_to_channel
packets = sniff(offline=path, count=1)
try:
results[field] = packets[0][RadioTap].dBm_AntSignal
except Exception:
raise FieldNotFoundError("Could not find field [RSSI]")
return results
class StatusFile(object):
def __init__(self, path, data_format='raw'):
self._path = path
self._updated = None
self._format = data_format
self.data = None
if os.path.exists(path):
self._updated = datetime.fromtimestamp(os.path.getmtime(path))
with open(path) as fp:
if data_format == 'json':
self.data = json.load(fp)
else:
self.data = fp.read()
def data_field_or(self, name, default=""):
if self.data is not None and name in self.data:
return self.data[name]
return default
def newer_then_minutes(self, minutes):
return self._updated is not None and ((datetime.now() - self._updated).seconds / 60) < minutes
def newer_then_hours(self, hours):
return self._updated is not None and ((datetime.now() - self._updated).seconds / (60 * 60)) < hours
def newer_then_days(self, days):
return self._updated is not None and (datetime.now() - self._updated).days < days
def update(self, data=None):
self._updated = datetime.now()
self.data = data
with ensure_write(self._path, 'w') as fp:
if data is None:
fp.write(str(self._updated))
elif self._format == 'json':
json.dump(self.data, fp)
else:
fp.write(data)