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Server.py
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Server.py
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#!/usr/bin/env python
import socket
import sys
import collections
import time
import queue
import threading
from threading import Thread
# from SocketServer import ThreadingMixIn
class ClientThread(Thread):
def __init__(self, socket, ip, port):
Thread.__init__(self)
self.socket = socket
self.ip = ip
self.port = port
print("New thread started")
def run(self):
status = 0
#userpresent = 0
while True:
self.socket.send(str(TIME_OUT).encode())
data2 = "successful"
#while userpresent == 0:
#num = 0
userdata = self.socket.recv(2048)
userdata=userdata.decode()
print(userdata)
if not userdata: break
#if userdata == 'veer' or 'harman':
#userpresent = 1
#print("i reached here")
if data2 == "successful":
self.socket.send(data2.encode())
#passpresent = 0
while status == 0:
#passdata = self.socket.recv(2048)
#if passdata=='veer' or 'harman':
#data2 = "successful"
#self.socket.send(data2.encode())
for p in offlineusers:
t = p.partition(" ")
if t[0] == userdata:
lock.acquire()
offlineusers.remove(p)
lock.release()
lock.acquire()
curusers.append(userdata)
lock.release()
print(userdata + " logged in")
status = 1 # 0 for offline , 1 for online , 2 for blocked
logtime = time.time()
fd = self.socket.fileno()
userfd = userdata + " " + str(fd)
lock.acquire()
userfdmap.append(userfd)
lock.release()
# print "[+] thread ready for "+ip+":"+str(port)
while True:
self.socket.settimeout(TIME_OUT)
command = self.socket.recv(2048).decode()
if "send " in command:
content = command.partition(" ")
contentinner = content[2].partition(" ")
sendmsg = userdata + ": " + contentinner[2]
receiver = contentinner[0]
errorflag = 1
for z in userfdmap:
zi = z.partition(" ")
if zi[0] == receiver:
receiverfd = int(zi[2])
errorflag = 0
lock.acquire()
sendqueues[receiverfd].put(sendmsg)
lock.release()
replymsg = "message sent"
self.socket.send(replymsg.encode())
else:
error = "Invalid command. Please enter a proper one"
self.socket.send(error.encode())
lock.acquire()
curusers.remove(userdata)
lock.release()
offlinedata = userdata + " " + str(logtime)
lock.acquire()
offlineusers.append(offlinedata)
lock.release()
print(offlinedata, "removed")
print("logged out")
sys.exit()
class ClientThreadread(Thread):
def __init__(self, sock):
Thread.__init__(self)
self.sock = sock
print("New thread for chat relying started")
def run(self):
tcpsock2.listen(1)
(conn2, addr) = tcpsock2.accept()
welcomemsg = "hi"
conn2.send(welcomemsg.encode())
chat = "initial"
#print("ind here is")
print(self.sock.fileno())
while True:
for p in userfdmap: # userfdmap contains mapping between usernames and their socket's file despcriptor which we use as index to access their respective queue
if str(self.sock.fileno()) in p:
connectionpresent = 1
else:
connectionpresent = 0 # We will use this to implement other features - no use as of now
try:
chat = sendqueues[self.sock.fileno()].get(False)
print(chat)
conn2.send(chat.encode())
except queue.Empty:
chat = "none"
time.sleep(2)
except KeyError:
pass
lock = threading.Lock()
global command
command = " "
sendqueues = {}
TCP_IP = '127.0.0.1'
TCP_PORT = 5002 # int(sys.argv[1])
TCP_PORT2 = 50000
BUFFER_SIZE = 1024 # Normally 1024, but we want fast response so we can put 20
TIME_OUT = 1800.0 # seconds - For time_out Block_time is 60 seconds
BLOCK_TIME = 60.0
curusers = []
offlineusers = []
blockusers = []
userlog = {}
userfdmap = []
tcpsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcpsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# host = socket.gethostname()
tcpsock.bind(('127.0.0.1', TCP_PORT))
tcpsock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcpsock2.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
tcpsock2.bind(('127.0.0.1', TCP_PORT2))
threads = []
while True:
tcpsock.listen(6)
print("Waiting for incoming connections...")
(conn, (ip, port)) = tcpsock.accept()
q = queue.Queue()
lock.acquire()
sendqueues[conn.fileno()] = q
lock.release()
print("new thread with ", conn.fileno())
newthread = ClientThread(conn, ip, port)
newthread.daemon = True
newthread.start()
newthread2 = ClientThreadread(conn)
newthread2.daemon = True
newthread2.start()
threads.append(newthread)
threads.append(newthread2)
for t in threads:
t.join()
print("eND")