server.py

#!/usr/bin/python
import sys
from socket import *
import subprocess


def bind_(host, port):
    st = socket(AF_INET, SOCK_STREAM)
    st.bind((host, port))
    st.listen(5)
    while 1:
        con, addr = st.accept()
        while 1:
            try:
                cmd = con.recv(30)
                # print cmd
                if "lst" in cmd:
                    pop = subprocess.Popen(['ls', '-1'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
                                           stdin=subprocess.PIPE)

                    data = pop.stdout.read()
                    con.send(data)

                elif "get" in cmd:
                    foo = cmd.split("get ")[1].split("\r")[0]
                    try:
                        off = open(foo, 'r')
                        data = off.read()
                        con.send("ok\r\n")
                        con.send(str(off.tell()) + "\r\n")
                        con.send(data + "\r\n")

                    except:
                        con.send("wr\r\n")

                elif "put" in cmd:
                    print "i am inside put()"
                    foo = cmd.split("put ")[1].split("\r")[0]
                    print "yeah i got your file name "
                    # print repr(foo)
                    o = open(foo, 'wb')
                    l = con.recv(1024).strip()
                    con.settimeout(5)
                    while (1):
                        o.write(l)
                        try:
                            l = con.recv(1024).strip()
                        except:
                            break

                    o.close()

                else:
                    continue

            except:
                continue
    con.close()
    st.close()


if __name__ == "__main__":
    server = "127.0.0.1"
    port = int(sys.argv[1])
    bind_(server, port)