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#! /usr/bin/env python
#!/usr/bin/env python
import select
import socket
import sys
import threading
import time
class Interact:
# status = Status()
def __init__(self, status):
self.status = status
def strip(self, str, what):
str = str.strip()
while len(str) > 0 and str[-1:] == what: str = str[:-1]
while len(str) > 0 and str[:1] == what: str = str[1:]
return str
def process_input(self, s):
""" input comes as arg:param """
s = self.strip(s, "'")
print "processing: %s" % s
if len(s) == 0: return False
if ":" not in s: return False
s1 = s[:s.index(":")]
s2 = s[s.index(":")+1:]
if s1 == 'get' and s2 == 'userlist':
return self.status.get_user_names()
elif s1 == 'get' and s2 == 'status':
return self.status.get_status_line()
elif s1 == 'reguser' and len(s2) > 1:
i = 1
user_name = s2
while self.status.add_user(user_name) == False:
user_name = "%s-%i" % (s2, i)
i += 1
print "interact: registered user '%s'" % s2
return user_name
class Server(threading.Thread):
def __init__(self, host, port, status):
threading.Thread.__init__(self)
self.host = host
self.port = port
self.backlog = 5
self.size = 1024
self.server = None
self.threads = []
self.interact = Interact(status)
def open_socket(self):
try:
self.server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.server.setblocking(0)
self.server.bind((self.host,self.port))
self.server.listen(5)
except socket.error, (value,message):
if self.server:
self.server.close()
print "Could not open socket: " + message
if message == "Address already in use":
self.__init__(self.host, self.port + 5)
else:
sys.exit(1)
def run(self):
self.open_socket()
input = [self.server]
self.running = True
while self.running:
inputready,outputready,exceptready = select.select(input,[],[],3)
for s in inputready:
if self.running and s == self.server:
# handle the server socket
print "start new client"
c = ClientServer(self.server.accept(), self.interact)
c.start()
self.threads.append(c)
# close all threads
print "closing server.run()"
def quit(self):
print "server quitting"
self.running = False
self.server.close()
for c in self.threads:
c.running = 0
c.join()
class ClientServer(threading.Thread):
def __init__(self,(client,address), interact):
threading.Thread.__init__(self)
self.client = client
self.client.setblocking(0)
self.address = address
self.size = 1024
self.interact = interact
def run(self):
self.running = 1
while self.running:
try:
data = self.client.recv(self.size)
if self.running and data:
if self.running:
if data[:3] == "bye" and ":" in data:
self.interact.status.del_user(data[4:])
data_back = "bye"
else:
data_back = self.interact.process_input(repr(data))
else:
data_back = "bye"
print "sending back:", data_back
self.client.send("%s" % data_back)
else:
self.client.close()
self.running = 0
except Exception, inst:
# socket is in non-blocking mode, so it raises a lot of exceptions
if inst.args[0] == 104:
# connection reset by peer
self.interact.status.del_user(data[4:])
self.running = False
elif inst.args[0] != 11:
print type(inst)
print inst.args
# time.sleep(0.3)
class Client(threading.Thread):
def __init__(self, host, port, username, nonet_function=None):
threading.Thread.__init__(self)
self.host = host
self.port = port
self.username = username
self.nonet_function = nonet_function
def close(self):
print "sending bye to server"
try:
self.s.send("bye:%s" % self.username)
time.sleep(1)
except: pass
self.running = False
def run(self):
host = self.host
port = self.port
size = 1024
self.size = size
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try: s.connect((host,port))
except:
if self.nonet_function != None: self.nonet_function()
return False
s.setblocking(0)
self.s = s
# Register Username
cmd = "reguser:%s" % self.username
self.username = self.talk(cmd)
print "received username: %s" % self.username
self.running = True
while self.running:
time.sleep(2)
# print self.talk("get:userlist")
s.close()
def talk(self, s):
# cmd = "get:userlist"
print "< %s" % s
loop = True
while loop:
try:
self.s.send(s)
loop = False
except Exception, inst:
print type(inst)
print inst.args
# errno, errstr = list(inst.args)
if inst.args[0] == 11: time.sleep(0.5)
else:
print "Host has quit"
self.running = False
return False
loop = True
while loop:
try:
data = self.s.recv(self.size)
loop = False
return data
except Exception, inst:
# print type(inst)
# print inst.args
errno, errstr = list(inst.args)
if errno == 11: time.sleep(0.5)
else:
print "Host has quit"
self.running = False
return False
if __name__ == "__main__":
host = "localhost"
port = 50056
username = "chris"
if len(sys.argv) > 1:
if sys.argv[1] == "0":
s = Server('', port)
s.start()
time.sleep(10)
s.quit()
print "ciao ciao"
else:
c = Client(host, port, username)
c.start()
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