import os
import sys
import time
import socket
import jinja2
import paramiko
import threading

j2log = "Connection from: {{ ip }} ({{ port }}) ({{ proto }})"
#j2send = "\n\n\nYour IP Address is {{ ip }} ({{ port }})\n\n\n\n"


j2send = """{


"comment": "##     Your IP Address is {{ ip }} ({{ port }})     ##",


"family": "{{ family }}", 
"ip": "{{ ip }}", 
"port": "{{ port }}"
}"""





class log_management:
	def __init__(self):
		self.logpath = "/etc/checkmyip/"
		self.logfile = "/etc/checkmyip/checkmyip.log"
		self._publish_methods()
		self.can_log = True
		paramiko.util.log_to_file('/etc/checkmyip/ssh.log')
	def _logger(self, data):
		logdata = time.strftime("%Y-%m-%d %H:%M:%S") + ":   " + data + "\n"
		if self.can_log:
			try:
				f = open(self.logfile, 'a')
				f.write(logdata)
				f.close()
			except IOError:
				self._console("Unable to log to logfile %s. Creating log directory" % self.logfile)
				self.can_log = False
				self._create_log_dir()
		self._console(logdata)
	def _console(self, data, timestamp=False):
		if timestamp:
			logdata = time.strftime("%Y-%m-%d %H:%M:%S") + ":   " + data + "\n"
		else:
			logdata = data
		print(logdata)
	def _publish_methods(self):
		global log
		global console
		log = self._logger
		console = self._console
	def _create_log_dir(self):
		os.system('mkdir -p ' + self.logpath)
		self._console("Logpath (%s) created" % self.logpath)
		self.can_log = True


class rsa_key:
	data = """-----BEGIN RSA PRIVATE KEY-----
	MIICWgIBAAKBgQDTj1bqB4WmayWNPB+8jVSYpZYk80Ujvj680pOTh2bORBjbIAyz
	oWGW+GUjzKxTiiPvVmxFgx5wdsFvF03v34lEVVhMpouqPAYQ15N37K/ir5XY+9m/
	d8ufMCkjeXsQkKqFbAlQcnWMCRnOoPHS3I4vi6hmnDDeeYTSRvfLbW0fhwIBIwKB
	gBIiOqZYaoqbeD9OS9z2K9KR2atlTxGxOJPXiP4ESqP3NVScWNwyZ3NXHpyrJLa0
	EbVtzsQhLn6rF+TzXnOlcipFvjsem3iYzCpuChfGQ6SovTcOjHV9z+hnpXvQ/fon
	soVRZY65wKnF7IAoUwTmJS9opqgrN6kRgCd3DASAMd1bAkEA96SBVWFt/fJBNJ9H
	tYnBKZGw0VeHOYmVYbvMSstssn8un+pQpUm9vlG/bp7Oxd/m+b9KWEh2xPfv6zqU
	avNwHwJBANqzGZa/EpzF4J8pGti7oIAPUIDGMtfIcmqNXVMckrmzQ2vTfqtkEZsA
	4rE1IERRyiJQx6EJsz21wJmGV9WJQ5kCQQDwkS0uXqVdFzgHO6S++tjmjYcxwr3g
	H0CoFYSgbddOT6miqRskOQF3DZVkJT3kyuBgU2zKygz52ukQZMqxCb1fAkASvuTv
	qfpH87Qq5kQhNKdbbwbmd2NxlNabazPijWuphGTdW0VfJdWfklyS2Kr+iqrs/5wV
	HhathJt636Eg7oIjAkA8ht3MQ+XSl9yIJIS8gVpbPxSw5OMfw0PjVE7tBdQruiSc
	nvuQES5C9BMHjF39LZiGH1iLQy7FgdHyoP+eodI7
	-----END RSA PRIVATE KEY-----
	"""
	def open(self):
		pass
	def close(self):
		pass
	def readlines(self):
		return self.data.split("\n")
	def __call__(self):
		return paramiko.RSAKey.from_private_key(self)


class ssh_server (paramiko.ServerInterface):
	def __init__(self):
		self.event = threading.Event()
	def check_channel_request(self, kind, chanid):
		if kind == 'session':
			return paramiko.OPEN_SUCCEEDED
		return paramiko.OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED
	def check_auth_none(self, username):
		return paramiko.AUTH_SUCCESSFUL
	def get_allowed_auths(self, username):
		return 'none'
	def check_channel_shell_request(self, channel):
		self.event.set()
		return True
	def check_channel_pty_request(self, channel, term, width, height,
								   pixelwidth, pixelheight, modes):
		return True


def j2format(j2tmp, valdict):
	template = jinja2.Template(j2tmp)
	return template.render(valdict)


def cleanip(addr):
	ip = addr[0]
	port = addr[1]
	family = "ipv6"
	if len(ip) > 6:  # If this IP is not a super short v6 address
		if ip[:7] == "::ffff:":  # If this is a prefixed IPv4 address
			ip = ip.replace("::ffff:", "")  # Return the cleaned IP
			family = "ipv4"
	return (ip, port, family)  # Return the uncleaned IP if not matched


def listener(port, talker):
	listen_ip = ''
	listen_port = port
	buffer_size = 100  # Normally 1024, but we want fast response
	while True:
		sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
		sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
		sock.bind((listen_ip, listen_port))
		sock.listen(buffer_size)
		client, addr = sock.accept()
		ip, port, family = cleanip(addr)
		valdict = {"ip": ip, "port": port, "family": family}
		thread = threading.Thread(target=talker, args=(client, valdict))
		thread.start()


def telnet_talker(client, valdict):
	valdict.update({"proto": "telnet"})
	log(j2format(j2log, valdict))
	client.send(j2format(j2send, valdict))  # echo
	client.close()
	#quit()


def ssh_talker(client, valdict):
	valdict.update({"proto": "ssh"})
	t = paramiko.Transport(client, gss_kex=True)
	t.set_gss_host(socket.getfqdn(""))
	t.load_server_moduli()
	t.add_server_key(rsa_key()())
	server = ssh_server()
	t.start_server(server=server)
	chan = t.accept(20)
	if chan:
		server.event.wait(10)
		#chan.send(j2format(j2log, valdict))
		log(j2format(j2log, valdict))
		chan.send('%s' % j2format(j2send, valdict))
		chan.makefile('rU').readline().strip('\r\n')
	chan.close()
	#quit()


def start():
	talkers = {22: ssh_talker, 23: telnet_talker}
	for talker in talkers:
		thread = threading.Thread(target=listener, args=(talker, talkers[talker]))
		thread.daemon = True
		thread.start()
	while True:
		try:
			time.sleep(1)
		except KeyboardInterrupt:
			quit()


if __name__ == "__main__":
	logging = log_management()
	start()