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easydoh.py
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easydoh.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import glob
import json
import os
import re
import struct
import subprocess
import sys
import ConfigParser
VERSION = "1.1.3"
# Templates for configuration parameters
trr_mode = 'network.trr.mode'
trr_uri = 'network.trr.uri'
trr_custom_uri = 'network.trr.custom_uri'
# Read a message from stdin and decode it.
def get_message():
if sys.version_info.major == 3:
raw_length = sys.stdin.buffer.read(4)
if len(raw_length) == 0:
sys.exit(0)
message_length = struct.unpack('@I', raw_length)[0]
message = sys.stdin.buffer.read(message_length).decode('utf-8')
else:
raw_length = sys.stdin.read(4)
if len(raw_length) == 0:
sys.exit(0)
message_length = struct.unpack('@I', raw_length)[0]
message = sys.stdin.read(message_length)
return json.loads(message)
# Encode a message for transmission, given its content.
def encode_message(messageContent):
encodedContent = json.dumps(messageContent)
if sys.version_info.major == 3:
encodedContent = encodedContent.encode('utf-8')
encodedLength = struct.pack('@I', len(encodedContent))
return {'length': encodedLength, 'content': encodedContent}
# Send an encoded message to stdout.
def send_message(encoded_message):
if sys.version_info.major == 3:
sys.stdout.buffer.write(encoded_message['length'])
sys.stdout.buffer.write(encoded_message['content'])
sys.stdout.buffer.flush()
else:
sys.stdout.write(encoded_message['length'])
sys.stdout.write(encoded_message['content'])
sys.stdout.flush()
# Simple debug function to trace execution in Firefox developer console
def log(message):
if sys.version_info.major == 3:
sys.stdout.buffer.write(message)
else:
sys.stderr.write(message)
def get_firefox_profile_dir():
default_profile_path = None
_platform = sys.platform
mozilla_profile = None
if _platform == 'win32' or _platform == 'win64':
mozilla_profile = os.path.join(os.getenv('APPDATA'), 'Mozilla\\Firefox')
elif _platform == 'darwin':
mozilla_profile = os.path.expanduser('~/Library/Application Support/Firefox')
elif _platform == 'linux' or _platform == 'linux2':
mozilla_profile = os.path.expanduser('~/.mozilla/firefox')
if mozilla_profile:
mozilla_profile_ini = os.path.join(mozilla_profile, 'profiles.ini')
profile = ConfigParser.ConfigParser()
profile.read(mozilla_profile_ini)
try:
default_profile_path = os.path.normpath(os.path.join(mozilla_profile, profile.get('Profile0', 'Path')))
except Exception as e:
log(e)
log("[!] Error getting Firefox default profile path")
sys.exit(1)
return default_profile_path
def get_firefox_user_file():
user_file = "user.js"
profile_dir = get_firefox_profile_dir()
if not profile_dir:
log("[!] Could not get Firefox profile directory. Aborting...")
sys.exit()
return os.path.join(profile_dir, user_file)
def set_firefox_user_pref(key, value):
return 'user_pref("{}", {});'.format(key, value)
def get_firefox_dns_pref():
user_file = get_firefox_user_file()
get_mode = '1'
get_uri = 'https://mozilla.cloudflare-dns.com/dns-query'
if os.path.isfile(user_file):
with open(user_file, 'r') as f:
read = f.read()
get_mode_search = re.search('user_pref\("{}", ?(.+?)\);'.format(trr_mode), read)
if get_mode_search:
get_mode = get_mode_search.group(1)
get_uri_search = re.search('user_pref\("{}", "?(.+?)"?\);'.format(trr_uri), read)
if get_uri_search:
get_uri = get_uri_search.group(1)
return get_mode, get_uri
def set_firefox_dns_pref(mode, uri):
set_mode = set_firefox_user_pref(trr_mode, mode)
set_uri = set_firefox_user_pref(trr_uri, '"{}"'.format(uri))
set_custom_uri = set_firefox_user_pref(trr_custom_uri, '"{}"'.format(uri))
return set_mode, set_uri, set_custom_uri
def add_data_file(file, pref, value):
if pref in file:
file = re.sub('user_pref\("{}",.*\);'.format(pref), value, file)
else:
file += '\n' + value
return file
def format_file(file):
if os.path.isfile(file):
format_file = ""
with open(file, 'r+') as f:
for line in f:
if line != "\n":
format_file += line
f.seek(0)
f.truncate(0)
f.write(format_file)
if format_file == "":
os.remove(file)
def write_firefox_user_pref(mode, uri):
if uri.find("manual;") == 0:
uri = uri.split(";")[1]
user = get_firefox_user_file()
mode, uri, custom_uri = set_firefox_dns_pref(mode, uri)
if not os.path.isfile(user):
open(user, 'w').close()
with open(user, 'r+') as f:
read = f.read()
read = add_data_file(read, trr_mode, mode)
read = add_data_file(read, trr_uri, uri)
read = add_data_file(read, trr_custom_uri, custom_uri)
f.seek(0)
f.truncate(0)
f.write(read)
format_file(user)
def uninstall():
user = get_firefox_user_file()
if os.path.isfile(user):
with open(user, 'r+') as f:
uninstall_file = ""
for line in f:
if trr_mode not in line and trr_uri not in line and trr_custom_uri not in line:
uninstall_file += line
f.seek(0)
f.truncate(0)
f.write(uninstall_file)
format_file(user)
try:
if sys.argv[1] == 'uninstall':
uninstall()
print('\n')
print('Uninstalled!')
sys.exit(0)
except Exception as e:
pass
while True:
received_message = get_message()
data = json.loads(received_message)
if data["mode"] == "version":
values = {"mode": "version", "uri": VERSION}
send_message(encode_message(values))
elif data["mode"] == "init":
mode, uri = get_firefox_dns_pref()
values = {"mode": mode, "uri": uri}
send_message(encode_message(values))
else:
write_firefox_user_pref(data["mode"], data["uri"])