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import signal
import socket
import sys
import threading
import traceback
import uuid
from . import pubsub
from . import ssh
from . import termcast
from . import web
class Server(object):
def __init__(self, keyfile, pemfile):
self.publisher = pubsub.Publisher()
self.keyfile = keyfile
self.pemfile = pemfile
def listen(self):
ssh_sock = self._open_socket(2200)
termcast_sock = self._open_socket(2201)
web_sock = self._open_socket(2202)
threading.Thread(
target=lambda: self.wait_for_ssh_connection(ssh_sock)
).start()
threading.Thread(
target=lambda: self.wait_for_termcast_connection(termcast_sock)
).start()
threading.Thread(
target=lambda: self.wait_for_web_connection(web_sock)
).start()
def wait_for_ssh_connection(self, sock):
self._wait_for_connection(
sock,
lambda client: self.handle_ssh_connection(client)
)
def wait_for_termcast_connection(self, sock):
self._wait_for_connection(
sock,
lambda client: self.handle_termcast_connection(client)
)
def wait_for_web_connection(self, sock):
sock.setblocking(0)
sock.listen(100)
web.start_server(sock, self.publisher, self.pemfile)
def handle_ssh_connection(self, client):
self._handle_connection(
client,
lambda client, connection_id: ssh.Connection(
client, connection_id, self.publisher, self.keyfile
)
)
def handle_termcast_connection(self, client):
self._handle_connection(
client,
lambda client, connection_id: termcast.Connection(
client, connection_id, self.publisher, self.pemfile
)
)
def _wait_for_connection(self, sock, cb):
while True:
try:
sock.listen(100)
client, addr = sock.accept()
except Exception as e:
print(traceback.format_exc())
print('*** Listen/accept failed: ' + str(e))
continue
threading.Thread(target=cb, args=(client,)).start()
def _handle_connection(self, client, cb):
connection_id = uuid.uuid4().hex
connection = cb(client, connection_id)
self.publisher.subscribe(connection)
try:
connection.run()
except Exception as e:
print(traceback.format_exc())
print('Running connection failed: ' + str(e))
self.publisher.unsubscribe(connection)
client.close()
def _open_socket(self, port):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(('', port))
return sock
def main():
server = Server(sys.argv[1], sys.argv[2])
server.listen()
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