378 lines
14 KiB
Python
378 lines
14 KiB
Python
import os
|
|
import socket
|
|
import threading
|
|
import sys
|
|
import configparser
|
|
import re
|
|
from serveur import Log
|
|
|
|
|
|
##
|
|
# Handle a connection from a client.
|
|
# Wait for request from the client
|
|
# @param connection the socket descriptor of the connection
|
|
# @param client_adress ("ip", port) of the connection
|
|
def handle_connection(connection, client_address):
|
|
try:
|
|
log.printL("Connection from IP -> {}".format(client_address), Log.lvl.INFO)
|
|
while True:
|
|
data = connection.recv(4096)
|
|
if data:
|
|
log.printL("Request from IP -> {}"
|
|
" {}".format(client_address, data.decode()), Log.lvl.INFO)
|
|
threading.Thread(target=handle_request, args=(connection, data.decode())).start()
|
|
else:
|
|
break
|
|
except Exception as e:
|
|
log.printL("Handle connection fail : ".format(str(e)), Log.lvl.FAIL)
|
|
finally:
|
|
quit_user(connection)
|
|
|
|
|
|
##
|
|
# Handle a request.
|
|
# @param connection the socket descriptor of the request sender
|
|
# @param data the request to handle in String
|
|
def handle_request(connection, data):
|
|
try:
|
|
array_data = data.split(" ")
|
|
|
|
### Command for user with nickname ###
|
|
if usersConnected[connection][1] is not None:
|
|
### No command -> new message ###
|
|
if not array_data[0][0] == "/" and usersConnected[connection][2]:
|
|
connection.sendall("SUCC_MESSAGE_SENDED".encode())
|
|
broadcast_message(connection, "NEW_MSG {} {} ".format(usersConnected[connection][1], data))
|
|
return
|
|
else:
|
|
### Command for user enable & disable ###
|
|
if array_data[0] == "/name":
|
|
change_name(connection, array_data[1])
|
|
return
|
|
if array_data[0] == "/userlist":
|
|
user_list_active(connection)
|
|
return
|
|
if array_data[0] == "/userlistaway":
|
|
user_list_away(connection)
|
|
return
|
|
if array_data[0] == "/enable":
|
|
enable_user(connection)
|
|
return
|
|
if array_data[0] == "/disable":
|
|
disable_user(connection)
|
|
return
|
|
if array_data[0] == "/quit":
|
|
connection.shutdown(socket.SHUT_RD)
|
|
return
|
|
|
|
### Command available for enable only ###
|
|
if not usersConnected[connection][2]:
|
|
connection.sendall("ERR_U_ARE_DISABLE".encode())
|
|
return
|
|
else:
|
|
if array_data[0] == "/askpm":
|
|
ask_private_message(connection, array_data[1])
|
|
return
|
|
if array_data[0] == "/acceptpm":
|
|
accept_private_message(connection, array_data[1])
|
|
return
|
|
if array_data[0] == "/rejectpm":
|
|
reject_private_message(connection, array_data[1])
|
|
return
|
|
if array_data[0] == "/pm":
|
|
private_message(connection, array_data[1], " ".join(array_data[2:]))
|
|
return
|
|
if array_data[0] == "/pmfile":
|
|
ask_file(connection, array_data[1], array_data[2])
|
|
return
|
|
if array_data[0] == "/acceptfile":
|
|
accept_file(connection, array_data[1], " ".join(array_data[3:]), array_data[2])
|
|
return
|
|
if array_data[0] == "/rejectfile":
|
|
reject_file(connection, array_data[1], " ".join(array_data[2:]))
|
|
return
|
|
connection.sendall("ERR_COMMAND_NOT_FOUND".encode())
|
|
else:
|
|
### Command for user without nickname ###
|
|
if array_data[0] == "/newname":
|
|
new_name(connection, array_data[1])
|
|
return
|
|
if array_data[0] == "/quit":
|
|
connection.shutdown(socket.SHUT_RD)
|
|
return
|
|
connection.sendall("ERR_NO_NICKNAME".encode())
|
|
except IndexError:
|
|
log.printL("Parameter missing in the request", Log.lvl.WARNING)
|
|
connection.sendall("ERR_PARAMETER_MISSING".encode())
|
|
except Exception as e:
|
|
log.printL("Handle request fail : {}".format(str(e)), Log.lvl.FAIL)
|
|
connection.sendall("ERR_INTERNAL_SERVER_ERROR".encode())
|
|
|
|
|
|
##
|
|
# Broadcast a message to all the users connected except to the sender of the request
|
|
# @param connection the socket descriptor of the request sender
|
|
# @param message message to broadcast (String)
|
|
def broadcast_message(connection, message):
|
|
log.printL("User Connected : {}".format(usersConnected), Log.lvl.DEBUG)
|
|
for con, value in usersConnected.items():
|
|
# value 1 : pseudo value 2 : status (enable/disable)
|
|
if value[1] is not None and con != connection and value[2]:
|
|
try:
|
|
con.sendall(message.encode())
|
|
except Exception as e:
|
|
log.printL(str(e), Log.lvl.FAIL)
|
|
|
|
|
|
##
|
|
# Send the list of enable user
|
|
# @param connection the socket descriptor of the target
|
|
def user_list_active(connection):
|
|
l = "USERLIST "
|
|
for con, value in usersConnected.items():
|
|
if value[1] is not None and value[2]:
|
|
l += value[1] + " "
|
|
connection.sendall(l[:-1].encode())
|
|
|
|
|
|
##
|
|
# Send the list of disable user
|
|
# @param connection the socket descriptor of the target
|
|
def user_list_away(connection):
|
|
l = "USERAWAY "
|
|
for con, value in usersConnected.items():
|
|
if value[1] is not None and not value[2]:
|
|
l += value[1] + " "
|
|
connection.sendall(l[:-1].encode())
|
|
|
|
|
|
##
|
|
# Change the nickname of the user
|
|
# @param connection the socket descriptor of the target
|
|
# @param pseudo new nickname for the user (String)
|
|
def change_name(connection, pseudo):
|
|
if not re.match("^\w{3,15}$", pseudo):
|
|
connection.sendall("ERR_INVALID_NICKNAME".encode())
|
|
elif get_connection_by_pseudo(pseudo) is not None:
|
|
connection.sendall("ERR_NICKNAME_ALREADY_USED")
|
|
else:
|
|
broadcast_message(connection, "NAME_CHANGED {} {}".format(usersConnected[connection][1], pseudo))
|
|
connection.sendall("SUCC_VALID_NICKNAME".encode())
|
|
usersConnected[connection][1] = pseudo
|
|
|
|
|
|
##
|
|
# Affect the nickname of the user for the first time
|
|
# @param connection the socket descriptor of the targ
|
|
# @param pseudo nickname for the user (String)
|
|
def new_name(connection, pseudo):
|
|
if not re.match("^\w{3,15}$", pseudo):
|
|
connection.sendall("ERR_INVALID_NICKNAME".encode())
|
|
elif get_connection_by_pseudo(pseudo) is not None:
|
|
connection.sendall("ERR_NICKNAME_ALREADY_USED".encode())
|
|
else:
|
|
broadcast_message(connection, "HAS_JOIN {} ".format(pseudo))
|
|
connection.sendall("SUCC_CHANNEL_JOINED".encode())
|
|
usersConnected[connection][1] = pseudo
|
|
user_list_active(connection)
|
|
user_list_away(connection)
|
|
|
|
|
|
def ask_private_message(connection, pseudo):
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_USER_NOT_FOUND".encode())
|
|
else:
|
|
pm = (connection, c)
|
|
if pm in askPM:
|
|
connection.sendall("ALREADY_ASKED".encode())
|
|
else:
|
|
askPM.append(pm)
|
|
log.printL("askPm {}".format(askPM), Log.lvl.DEBUG)
|
|
c.sendall("ASKING_FOR_PM {}".format(usersConnected[connection][1]).encode())
|
|
connection.sendall("SUCC_INVITED".encode())
|
|
|
|
|
|
def accept_private_message(connection, pseudo):
|
|
log.printL("askPm {}".format(askPM), Log.lvl.DEBUG)
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_USER_NOT_FOUND".encode())
|
|
else:
|
|
pm = (c, connection)
|
|
if pm not in askPM:
|
|
connection.sendall("ERR_USER_HAS_NOT_ASK".encode())
|
|
else:
|
|
askPM.remove(pm)
|
|
validatePM.append(pm)
|
|
connection.sendall("SUCC_PRIVATE_DISCUSSION_ACCEPTED".encode())
|
|
c.sendall("SUCC_PRIVATE_DISCUSSION_OK {}".format(usersConnected[connection][1]).encode())
|
|
|
|
|
|
def reject_private_message(connection, pseudo):
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_USER_NOT_FOUND".encode())
|
|
else:
|
|
pm = (c, connection)
|
|
pmr = (connection, c)
|
|
if pm not in askPM:
|
|
if pm in validatePM:
|
|
validatePM.remove(pm)
|
|
connection.sendall("SUCC_PRIVATE_DISCUSSION_REFUSED".encode())
|
|
c.sendall("SUCC_PRIVATE_DISCUSSION_REJECTED {}".format(usersConnected[connection][1]).encode())
|
|
elif pmr in validatePM:
|
|
validatePM.remove(pmr)
|
|
connection.sendall("SUCC_PRIVATE_DISCUSSION_REFUSED".encode())
|
|
c.sendall("SUCC_PRIVATE_DISCUSSION_REJECTED {}".format(usersConnected[connection][1]).encode())
|
|
else:
|
|
connection.sendall("ERR_USER_HAS_NOT_ASK".encode())
|
|
else:
|
|
askPM.remove(pm)
|
|
connection.sendall("SUCC_PRIVATE_DISCUSSION_REFUSED".encode())
|
|
c.sendall("SUCC_PRIVATE_DISCUSSION_REJECTED {}".format(usersConnected[connection][1]).encode())
|
|
|
|
|
|
def private_message(connection, pseudo, msg):
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_DEST_NOT_FOUND".encode())
|
|
else:
|
|
pm = (connection, c)
|
|
pmr = (c, connection)
|
|
if pm not in validatePM and pmr not in validatePM:
|
|
connection.sendall("ERR_NOT_ACCEPTED".encode())
|
|
else:
|
|
c.sendall("NEW_PM {} {}".format(pseudo, msg).encode())
|
|
connection.sendall("SUCC_PM_SENDED".encode())
|
|
|
|
|
|
def ask_file(connection, pseudo, file):
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_USER_NOT_FOUND".encode())
|
|
else:
|
|
f = (connection, c, file)
|
|
if f in askFT:
|
|
connection.sendall("ERR_ALREADY_ONE".encode())
|
|
else:
|
|
askFT.append(f)
|
|
log.printL("askFT {}".format(askFT), Log.lvl.DEBUG)
|
|
c.sendall("HAS_ASKED_FILE {} {}".format(usersConnected[connection][1], file).encode())
|
|
connection.sendall("SUCC_ASKED_FILE".encode())
|
|
|
|
|
|
def accept_file(connection, pseudo, file, port):
|
|
log.printL("askFT {}".format(askFT), Log.lvl.DEBUG)
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_USER_NOT_FOUND".encode())
|
|
else:
|
|
f = (c, connection, file)
|
|
if f not in askFT:
|
|
connection.sendall("ERR_USER_HAS_NOT_ASK".encode())
|
|
else:
|
|
askFT.remove(f)
|
|
connection.sendall("SUCC_FILE_ACCEPTED {}".format(usersConnected[c][0][0]).encode())
|
|
c.sendall("CAN_SEND_FILE {} {} {} {}".format( pseudo, usersConnected[connection][0][0], port, file).encode())
|
|
|
|
|
|
def reject_file(connection, pseudo, file):
|
|
c = get_connection_by_pseudo(pseudo)
|
|
if c is None:
|
|
connection.sendall("ERR_USER_NOT_FOUND".encode())
|
|
else:
|
|
f = (c, connection, file)
|
|
if f not in askFT:
|
|
connection.sendall("ERR_USER_HAS_NOT_ASK".encode())
|
|
else:
|
|
askPM.remove(f)
|
|
connection.sendall("SUCC_FILE_REFUSED".encode())
|
|
|
|
|
|
def enable_user(connection):
|
|
if not usersConnected[connection][2]:
|
|
usersConnected[connection][2] = True
|
|
connection.sendall("SUCC_ENABLED".encode())
|
|
broadcast_message(connection, "IS_NOW_ENABLE {}".format(usersConnected[connection][1]))
|
|
else:
|
|
connection.sendall("ERR_NOT_DISABLED".encode())
|
|
|
|
|
|
def disable_user(connection):
|
|
if usersConnected[connection][2]:
|
|
usersConnected[connection][2] = False
|
|
connection.sendall("SUCC_DISABLED".encode())
|
|
broadcast_message(connection, "IS_NOW_DISABLE {}".format(usersConnected[connection][1]))
|
|
else:
|
|
connection.sendall("ERR_NOT_ENABLED".encode())
|
|
|
|
|
|
def quit_user(connection):
|
|
try:
|
|
connection.sendall("SUCCESSFUL_LOGOUT".encode())
|
|
except OSError: # Client close the socket in this side not properly
|
|
log.printL("Client IP -> {} close connection not properly"
|
|
"".format(usersConnected[connection][0]), Log.lvl.WARNING)
|
|
connection.close()
|
|
log.printL("Disconnection from IP -> {}".format(usersConnected[connection][0]), Log.lvl.INFO)
|
|
pseudo = usersConnected[connection][1]
|
|
usersConnected.pop(connection)
|
|
broadcast_message(connection, "HAS_LEFT {}".format(pseudo))
|
|
|
|
|
|
def get_connection_by_pseudo(pseudo):
|
|
for con, value in usersConnected.items():
|
|
if value[1] == pseudo:
|
|
return con
|
|
return None
|
|
|
|
|
|
def main():
|
|
# Global vars
|
|
global usersConnected, log, sock
|
|
global askPM, validatePM
|
|
global askFT
|
|
usersConnected = {}
|
|
askPM = []
|
|
validatePM = []
|
|
askFT = []
|
|
|
|
# Config
|
|
config = configparser.ConfigParser()
|
|
if not os.path.isfile("dncserver.conf"):
|
|
config['NETWORK'] = {'port': '2222'}
|
|
config['LOG'] = {'logDirectory': 'log'}
|
|
with open('dncserver.conf', 'w') as configfile:
|
|
config.write(configfile)
|
|
config.read("dncserver.conf")
|
|
log = Log.Log(config["LOG"]["logdirectory"])
|
|
log.printL("Configuration Log", Log.lvl.INFO)
|
|
log.printL("Server start", Log.lvl.INFO)
|
|
|
|
#Init socket serv
|
|
sock = socket.socket()
|
|
sock.bind(("", int(config["NETWORK"]["port"])))
|
|
sock.listen(5)
|
|
log.printL("Server Listen on port {}".format(config["NETWORK"]["port"]), Log.lvl.INFO)
|
|
|
|
try:
|
|
while True:
|
|
#Connection client
|
|
connection, client_address = sock.accept()
|
|
usersConnected[connection] = [client_address, None, True] # ip pseudo status
|
|
threading.Thread(target=handle_connection, args=(connection, client_address)).start()
|
|
except KeyboardInterrupt:
|
|
# Disable to received more requests on socket
|
|
for con, value in usersConnected.items():
|
|
con.shutdown(socket.SHUT_RD)
|
|
finally:
|
|
#Wait for threads finish
|
|
log.printL("Wait for threads ending", Log.lvl.INFO)
|
|
for t in threading.enumerate():
|
|
if t != threading.main_thread():
|
|
t.join()
|
|
sock.close()
|
|
log.printL("Server shutdown", Log.lvl.INFO)
|
|
sys.exit(0)
|