MultiTorProxy.__init__()   A
last analyzed

Complexity

Conditions 1

Size

Total Lines 15

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
c 1
b 0
f 0
dl 0
loc 15
rs 9.4285
cc 1
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import socket
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import threading
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import random
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import tempfile
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import os
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import subprocess
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class MultiTorProxy:
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    def __init__(self, listen_port=53000, listen_address='localhost', max_connections=10, tor_instaces=7,
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                 tor_start_port=53001, recv_buffer_size=4096):
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        self.listen_port = listen_port
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        self.listen_address = listen_address
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        self.max_connections = max_connections
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        self.recv_buffer_size = recv_buffer_size
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        self.tor_instaces = tor_instaces
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        self.tor_start_port = tor_start_port
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        self.tor_ports = []
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        self.temp_directory = tempfile.TemporaryDirectory()
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        os.chmod(self.temp_directory.name, 0o700)
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        self.tor_settings = {"SocksListenAddress": '127.0.0.1', "CookieAuthentication": '0'}
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    def __del__(self):
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        self.temp_directory.cleanup()
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    def start(self):
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        self._start_tor_instances()
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        threading.Thread(target=self._main_loop).start()
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    def update_tor_settings(self, tor_settings):
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        self.tor_settings.update(tor_settings)
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    def _start_tor_instances(self):
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        for i in range(0, self.tor_instaces):
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            threading.Thread(target=self._start_tor_instance, args=(i,)).start()
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    def _start_tor_instance(self, instance_number):
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        instance_data_directory = os.path.join(self.temp_directory.name, str(instance_number))
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        if not os.path.exists(instance_data_directory):
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            os.makedirs(instance_data_directory)
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        os.chmod(instance_data_directory, 0o700)
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        tor_instance_settings = self.tor_settings.copy()
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        tor_instance_settings.update({"DataDirectory": instance_data_directory,
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                                      "SocksPort": self.tor_start_port + instance_number})
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        self.tor_ports.append(tor_instance_settings["SocksPort"])
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        tor_settongs_file_path = os.path.join(instance_data_directory, 'tor_settings')
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        with open(tor_settongs_file_path, "w") as file:
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            for key in tor_instance_settings:
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                file.write("%s %s\n" % (key, str(tor_instance_settings[key])))
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        os.chmod(tor_settongs_file_path, 0o600)
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        while True:
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            try:
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                subprocess.call(["tor", "-f", tor_settongs_file_path])
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            except:
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                pass
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    def _main_loop(self):
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        try:
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            dock_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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            dock_socket.bind((self.listen_address, self.listen_port))
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            dock_socket.listen(self.max_connections)
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            while True:
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                self._on_accept(dock_socket.accept()[0])
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        finally:
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            threading.Thread(target=self._main_loop).start()
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    def _forward(self, source, destination):
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        while True:
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            try:
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                data = source.recv(self.recv_buffer_size)
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            except Exception:
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                self._on_close(source, destination)
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                break
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            if data:
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                try:
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                    destination.sendall(data)
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                except Exception:
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                    self._on_close(source, destination)
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                    break
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            else:
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                self._on_close(source, destination)
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                break
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    def _on_accept(self, client_socket):
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        server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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        tor_port = random.choice(self.tor_ports)
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        server_socket.connect(('localhost', tor_port))
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        threading.Thread(target=self._forward, args=(client_socket, server_socket)).start()
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        threading.Thread(target=self._forward, args=(server_socket, client_socket)).start()
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    def _on_close(self, source, destination):
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        try:
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            source.shutdown(socket.SHUT_RD)
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        except Exception:
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            pass
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        try:
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            destination.shutdown(socket.SHUT_WR)
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        except Exception:
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            pass