Onionr/onionr/netcontroller.py

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'''
Onionr - P2P Microblogging Platform & Social network
Netcontroller library, used to control/work with Tor/I2P and send requests through them
'''
'''
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
'''
import subprocess, os, sys, time, signal, base64, socket
from shutil import which
import logger, config
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from onionrblockapi import Block
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def getOpenPort():
# taken from (but modified) https://stackoverflow.com/a/2838309 by https://stackoverflow.com/users/133374/albert ccy-by-sa-3 https://creativecommons.org/licenses/by-sa/3.0/
# changes from source: import moved to top of file, bind specifically to localhost
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(("127.0.0.1",0))
s.listen(1)
port = s.getsockname()[1]
s.close()
return port
def torBinary():
'''Return tor binary path or none if not exists'''
torPath = './tor'
if not os.path.exists(torPath):
torPath = which('tor')
return torPath
class NetController:
'''
This class handles hidden service setup on Tor and I2P
'''
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def __init__(self, hsPort, apiServerIP='127.0.0.1'):
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# set data dir
self.dataDir = os.environ.get('ONIONR_HOME', os.environ.get('DATA_DIR', 'data/'))
if not self.dataDir.endswith('/'):
self.dataDir += '/'
self.torConfigLocation = self.dataDir + 'torrc'
self.readyState = False
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self.socksPort = getOpenPort()
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self.hsPort = hsPort
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self._torInstnace = ''
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self.myID = ''
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self.apiServerIP = apiServerIP
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if os.path.exists('./tor'):
self.torBinary = './tor'
elif os.path.exists('/usr/bin/tor'):
self.torBinary = '/usr/bin/tor'
else:
self.torBinary = 'tor'
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config.reload()
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return
def generateTorrc(self):
'''
Generate a torrc file for our tor instance
'''
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hsVer = '# v2 onions'
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if config.get('tor.v3onions'):
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hsVer = 'HiddenServiceVersion 3'
logger.debug('Using v3 onions')
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if os.path.exists(self.torConfigLocation):
os.remove(self.torConfigLocation)
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# Set the Tor control password. Meant to make it harder to manipulate our Tor instance
plaintext = base64.b64encode(os.urandom(50)).decode()
config.set('tor.controlpassword', plaintext, savefile=True)
config.set('tor.socksport', self.socksPort, savefile=True)
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controlPort = getOpenPort()
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config.set('tor.controlPort', controlPort, savefile=True)
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hashedPassword = subprocess.Popen([self.torBinary, '--hash-password', plaintext], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
for line in iter(hashedPassword.stdout.readline, b''):
password = line.decode()
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if 'warn' not in password:
break
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torrcData = '''SocksPort ''' + str(self.socksPort) + ''' OnionTrafficOnly
DataDirectory ''' + self.dataDir + '''tordata/
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CookieAuthentication 1
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ControlPort ''' + str(controlPort) + '''
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HashedControlPassword ''' + str(password) + '''
'''
if config.get('general.security_level', 1) == 0:
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torrcData += '''\nHiddenServiceDir ''' + self.dataDir + '''hs/
\n''' + hsVer + '''\n
HiddenServicePort 80 ''' + self.apiServerIP + ''':''' + str(self.hsPort)
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torrc = open(self.torConfigLocation, 'w')
torrc.write(torrcData)
torrc.close()
return
def startTor(self):
'''
Start Tor with onion service on port 80 & socks proxy on random port
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'''
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self.generateTorrc()
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if os.path.exists('./tor'):
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self.torBinary = './tor'
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elif os.path.exists('/usr/bin/tor'):
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self.torBinary = '/usr/bin/tor'
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else:
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self.torBinary = 'tor'
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try:
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tor = subprocess.Popen([self.torBinary, '-f', self.torConfigLocation], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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except FileNotFoundError:
logger.fatal("Tor was not found in your path or the Onionr directory. Please install Tor and try again.")
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sys.exit(1)
else:
# Test Tor Version
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torVersion = subprocess.Popen([self.torBinary, '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
for line in iter(torVersion.stdout.readline, b''):
if 'Tor 0.2.' in line.decode():
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logger.error('Tor 0.3+ required')
sys.exit(1)
break
torVersion.kill()
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# wait for tor to get to 100% bootstrap
try:
for line in iter(tor.stdout.readline, b''):
if 'Bootstrapped 100%: Done' in line.decode():
break
elif 'Opening Socks listener' in line.decode():
logger.debug(line.decode().replace('\n', ''))
else:
logger.fatal('Failed to start Tor. Maybe a stray instance of Tor used by Onionr is still running?')
return False
except KeyboardInterrupt:
logger.fatal('Got keyboard interrupt.', timestamp = False, level = logger.LEVEL_IMPORTANT)
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return False
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logger.debug('Finished starting Tor.', timestamp=True)
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self.readyState = True
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try:
myID = open(self.dataDir + 'hs/hostname', 'r')
self.myID = myID.read().replace('\n', '')
myID.close()
except FileNotFoundError:
self.myID = ""
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torPidFile = open(self.dataDir + 'torPid.txt', 'w')
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torPidFile.write(str(tor.pid))
torPidFile.close()
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return True
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def killTor(self):
'''
Properly kill tor based on pid saved to file
'''
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try:
pid = open(self.dataDir + 'torPid.txt', 'r')
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pidN = pid.read()
pid.close()
except FileNotFoundError:
return
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try:
int(pidN)
except:
return
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try:
os.kill(int(pidN), signal.SIGTERM)
os.remove(self.dataDir + 'torPid.txt')
except ProcessLookupError:
pass
except FileNotFoundError:
pass
return