I want to send some file from a client PC to a server PC using Python.
But when I run the client code, there is a problem.
Here is the client code:
with socket.socket(socket.AF_INET,socket.SOCK_STREAM) as sock:
sock.connect((HOST,PORT))
sock.sendall(filename.encode('utf-8'))
print(filename.encode('utf-8'))
and this is the server code:
filename = self.request.recv(1024)
print(filename)
filename = filename.decode('utf-8')
When I run it within my PC (for example, server=client localhost), it runs perfectly.
But in my server PC, print result has some added text like:
b'filename\~~~~~~~~~~'
filename result
error message
So I think if the added text is gone when I use my server PC, the problem will be solved.
But I dont know how to get there.
Please let me know...
Related
I am working on a tcp client-server python socket program where I have written server code to sent a simple message to the client . However when I run the server side in python idle I get invlalid syntax error and a red mark on the python version . I don't know where the problem is and I would appreciate your help with this specific task .
Image where error happens :
I press run and then run module and I get :
My code :
Server :
import sys
from socket import *
serverSocket = socket(AF_INET,SOCK_STREAM)
serverSocket.bind(('localhost',1234))
serverSocket.listen()
data = "Network labs"
while 1 :
connectionSocket ,addr = serverSocket.accept()
connectionSocket.send(data)
connectionSocket.close()
Client :
import sys
from socket import *
clientSocket = socket(AF_INET,SOCK_STREAM)
server_address=('localhost',1234)
clientSocket.connect(server_address)
sentence = clientSocket.recv(1024)
print(sentence)
clientSocket.close()
You tried to run the log of a shell session, complete with non-code startup message text and non-code prompts as python code. But the session log is not python code. "Python" might be, but "Python 3" is not valid code and so python reports a SyntaxError. This has nothing to do with running the code from an IDLE editor. If you run server.py from a command line or from any other python-aware editor or IDE, you would see the same.
To run server.py, you must remove the non-code parts -- the startup message and prompts. In general, you would also have to remove output, but there is none in your example. So you should end up with
import sys
from socked import *
...
In other words, the cleaned-up server code you listed in your question, which is not the code you ran in the screenshot to get the error message.
My requirement is ability to run a PowerShell script on a Windows 2012 server remotely, this has to be triggered from a Linux server using Python script.
Need suggestions on best way to handle this and also sample code (if possible).
Below are the steps I intend to achieve but i see it's not working as expected.
PowerShell scripts to be executed are already placed in Windows server (2012).
Python3 program running on Linux (CentOS) does SSH to Windows server (2012) using netmiko module.
sends the command (PowerShell command to execute script in remote Windows server) over the SSH connection.
I was able to connect to the remote Windows server using Python. But I don't see this method working as expected.
Need an effective and efficient way to achieve this.
from netmiko import ConnectHandler
device = ConnectHandler(device_type="terminal_server",
ip="X.X.X.x",
username="username",
password="password")
hostname = device.find_prompt()
output = device.send_command("ipconfig")
print (hostname)
print (output)
device.disconnect()
Nothing much is done for 'terminal_server" device type. You have to do manual passing at the moment.
Below is extracted from COMMON_ISSUES.md
Does Netmiko support connecting via a terminal server?
There is a 'terminal_server' device_type that basically does nothing post SSH connect. This means you have to manually handle the interaction with the terminal server to connect to the end device. After you are fully connected to the end network device, you can then 'redispatch' and Netmiko will behave normally
from __future__ import unicode_literals, print_function
import time
from netmiko import ConnectHandler, redispatch
net_connect = ConnectHandler(
device_type='terminal_server', # Notice 'terminal_server' here
ip='10.10.10.10',
username='admin',
password='admin123',
secret='secret123')
# Manually handle interaction in the Terminal Server
# (fictional example, but hopefully you see the pattern)
# Send Enter a Couple of Times
net_connect.write_channel("\r\n")
time.sleep(1)
net_connect.write_channel("\r\n")
time.sleep(1)
output = net_connect.read_channel()
print(output) # Should hopefully see the terminal server prompt
# Login to end device from terminal server
net_connect.write_channel("connect 1\r\n")
time.sleep(1)
# Manually handle the Username and Password
max_loops = 10
i = 1
while i <= max_loops:
output = net_connect.read_channel()
if 'Username' in output:
net_connect.write_channel(net_connect.username + '\r\n')
time.sleep(1)
output = net_connect.read_channel()
# Search for password pattern / send password
if 'Password' in output:
net_connect.write_channel(net_connect.password + '\r\n')
time.sleep(.5)
output = net_connect.read_channel()
# Did we successfully login
if '>' in output or '#' in output:
break
net_connect.write_channel('\r\n')
time.sleep(.5)
i += 1
# We are now logged into the end device
# Dynamically reset the class back to the proper Netmiko class
redispatch(net_connect, device_type='cisco_ios')
# Now just do your normal Netmiko operations
new_output = net_connect.send_command("show ip int brief")
I'm currently working a server-client setup in which I have two separate server scripts. One python script is responsible for running a SSH listener with Paramiko, and that script runs on one machine. I have another server script specifically acting as an SFTP server on another, separate machine, within the same range and subnet as the other one.
My client code is running on a windows 10 system. Both servers are running in unix environments (macOS and Ubuntu 16.04 respectively).
The SFTP server that I am running is aptly titled sftpserver, and is available at https://github.com/rspivak/sftpserver/.
The below code is actually the entirety of my client.py as it stands, minus the import statements.
key = paramiko.RSAKey.from_private_key_file('testkey.key')
transport = paramiko.Transport(('192.168.1.116', 10000))
transport.connect(username='root', password='toor', pkey=key)
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect('192.168.1.107', username='root', password='toor')
chan = client.get_transport().open_session()
chan.send("Hey man! I'm connected!")
print(chan.recv(1024))
def sftp(localpath, name):
try:
sftp = paramiko.SFTPClient.from_transport(transport)
sftp.put(localpath, '/root/uploads/' + name)
sftp.close()
transport.close()
return "<+> Done uploading"
except Exception as e:
return str(e)
while True:
command = chan.recv(1024).decode()
ipdb.set_trace() // <-- debugging purposes only
if 'grab' in command:
_, path, name = command.split(' ')
chan.send(sftp(path, name))
else:
try:
CMD = subprocess.check_output(command, shell=True)
chan.send(CMD)
except Exception as e:
chan.send(str(e))
client.close()
Executing the grab command in my script looks like this:
grab C:\Users\xxx\testing.txt testing.txt
Now, if I write a path exactly like that (with the back slashes), it will append a second back slash after each one. So, the path I supplied now looks like C:\\Users\xxx\\testing.txt, and this is what I imagine is causing me to receive File not found errors. Thanks to pdb I was able to find this issue, but I am unsure how to continue. In all honesty, I am completely unsure if this problem is paramiko related or if it's some weird python behavior that I haven't encountered yet.
Also, sorry for no stack trace. I'll try to obtain one if possible, but I'm a bit pressed for time right this second.
I am trying to upload files from a UNIX server to a windows server using python FTP_TLS. Here is my code:
from ftplib import FTP_TLS
ftps = FTP_TLS('server')
ftps.connect(port=myport)
ftps.login('user', 'password')
ftps.prot_p()
ftps.retrlines('LIST')
remote_path = "MYremotePath"
ftps.cwd(remote_path)
ftps.storbinary('STOR myfile.txt', open('myfile.txt', 'rb'))
myfile.close()
ftps.close()
I can connect to the server successfully and receive the list of files, but I am not able able to upload the file and after some time I receive the following error:
ftplib.error_perm: 550 Data channel timed out due to not meeting the minimum bandwidth requirement.
I should mention that I am able to upload files on the same server using perl FTPSSL library. The problem happens only in python.
Does anyone have any idea about how to resolve this issue?
Thanks
My Python application connects to a MSSQL database to verify some matter numbers, but this step is only necessary to assist with data integrity and does not bring the user any additional functionality.
The database is only accessible when on my office's local network. How do I check a user's environment during startup to see if this connection can be made?
I'm using pyodbc, but I also need this program to work on OS X, so I'm not importing that module until this check returns a positive result. Any ideas?
You could try something like this:
#!/usr/bin/python
import socket
mssql_server = 'foobar.example.not' # set this to your own value
s = socket.socket()
s.settimeout(3)
try:
server = [x for x in socket.getaddrinfo(mssql_server,1433) if x[0]==2 ][0][-1]
except socket.gaierror:
server = None
if server:
try:
s.connect(server)
except (socket.timeout, socket.error):
server = None
s.close()
... this should attempt to find an IPv4 address for your server (using the first one returned by getaddrinfo()) and then attempt to connect to the MS SQL TCP port (1433 by default) on that system. (Yes, change 1433 if your server is on a different port). If there's a timeout or any other socket error reported on the attempt, then server is set to None. Otherwise you probably have an MS SQL server that you could access.
Verify the host is available using ping before import:
import subprocess
host = "<hostname>"
# add sample text for ping resolution errors here
errors = ("could not find", "unreachable")
ping = "ping {0}".format(host)
(stdout, stderr) = subprocess.Popen(ping, stdout=subprocess.PIPE).communicate()
# stdout is a byte string and must be decoded before compare
if not any(error in stdout.decode("utf-8") for error in errors):
import pyodbc
.....