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import os
import subprocess
import asyncio
import socket
import socks
from typing import Optional
import shutil
import platform
import sys
import stat
class TorManager:
def __init__(self):
self.tor_process: Optional[subprocess.Popen] = None
self.onion_address: Optional[str] = None
self.socks_port = 9052
self.control_port = 9053
self.base_dir = self._get_base_dir()
def _get_base_dir(self) -> str:
"""Get the portable base directory for Tor files"""
if getattr(sys, 'frozen', False):
# If running as compiled executable
base_path = os.path.dirname(sys.executable)
else:
# If running from source
base_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
# Use a hidden directory in the user's home
return os.path.join(os.path.expanduser("~"), ".tormesh")
def _secure_dir_permissions(self, path: str):
"""Set secure permissions on directory"""
os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR) # 700
def _get_tor_path(self) -> str:
"""Get platform-specific Tor binary path with fallbacks"""
if platform.system() == 'Windows':
tor_names = ['tor.exe']
else:
tor_names = ['tor']
# Search in system paths first
search_paths = [
"/usr/bin",
"/usr/local/bin",
"/opt/homebrew/bin", # For MacOS
os.path.join(self.base_dir, "bin")
]
# Add PATH directories
if os.environ.get('PATH'):
search_paths.extend(os.environ['PATH'].split(os.pathsep))
for path in search_paths:
for name in tor_names:
tor_path = os.path.join(path, name)
if os.path.exists(tor_path) and os.access(tor_path, os.X_OK):
return tor_path
raise FileNotFoundError(
"Tor binary not found. Please ensure Tor is installed."
)
async def start(self):
"""Start Tor with robust error handling and retries"""
# Create base directory with secure permissions
os.makedirs(self.base_dir, exist_ok=True)
self._secure_dir_permissions(self.base_dir)
# Create necessary subdirectories
data_dir = os.path.join(self.base_dir, "data")
hidden_service_dir = os.path.join(self.base_dir, "hidden_service")
for directory in [data_dir, hidden_service_dir]:
os.makedirs(directory, exist_ok=True)
self._secure_dir_permissions(directory)
# Create torrc configuration
torrc_path = os.path.join(self.base_dir, "torrc")
with open(torrc_path, "w") as f:
f.write(f"""
SocksPort 127.0.0.1:{self.socks_port}
ControlPort 127.0.0.1:{self.control_port}
DataDirectory {data_dir}
HiddenServiceDir {hidden_service_dir}
HiddenServicePort 12345 127.0.0.1:12345
# Improve anonymity
UseEntryGuards 1
NumEntryGuards 4
# Improve resilience
CircuitBuildTimeout 60
LearnCircuitBuildTimeout 1
MaxCircuitDirtiness 600
NewCircuitPeriod 300
""")
self._secure_dir_permissions(os.path.dirname(torrc_path))
# Start Tor process with retries
max_retries = 3
retry_delay = 2
for attempt in range(max_retries):
try:
tor_path = self._get_tor_path()
print(f"Starting Tor from: {tor_path}")
self.tor_process = subprocess.Popen(
[tor_path, "-f", torrc_path],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
# Wait for Tor to start and verify it's running
if await self._wait_for_tor():
print(f"Tor started successfully on attempt {attempt + 1}")
return
except Exception as e:
print(f"Tor start attempt {attempt + 1} failed: {str(e)}")
if self.tor_process:
self.tor_process.terminate()
await asyncio.sleep(1)
if attempt < max_retries - 1:
await asyncio.sleep(retry_delay)
else:
raise Exception(f"Failed to start Tor after {max_retries} attempts")
async def _wait_for_tor(self) -> bool:
"""Wait for Tor to start with improved verification"""
hostname_file = os.path.join(
self.base_dir, "hidden_service", "hostname"
)
for _ in range(30): # Wait up to 30 seconds
# Check if process is still running
if self.tor_process and self.tor_process.poll() is not None:
if self.tor_process.stderr:
stderr = self.tor_process.stderr.read().decode()
raise Exception(f"Tor process died: {stderr}")
raise Exception("Tor process died unexpectedly")
# Check for hostname file
if os.path.exists(hostname_file):
try:
with open(hostname_file, "r") as f:
self.onion_address = f.read().strip()
# Verify SOCKS port is listening
sock = socket.socket()
try:
sock.connect(("127.0.0.1", self.socks_port))
sock.close()
return True
except:
pass
except:
pass
await asyncio.sleep(1)
return False
async def stop(self):
"""Stop Tor with graceful shutdown"""
if self.tor_process:
try:
self.tor_process.terminate()
try:
await asyncio.wait_for(
asyncio.create_task(self.tor_process.wait()),
timeout=5
)
except asyncio.TimeoutError:
self.tor_process.kill()
# Clear sensitive data
if self.onion_address:
self.onion_address = None
# Clean up temporary files securely
if os.path.exists(self.base_dir):
try:
# Securely delete sensitive files
for root, dirs, files in os.walk(self.base_dir):
for f in files:
path = os.path.join(root, f)
with open(path, 'wb') as fd:
fd.write(os.urandom(os.path.getsize(path)))
# Remove directory tree
shutil.rmtree(self.base_dir)
except:
pass
except:
pass # Ensure cleanup doesn't raise errors
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