Simple file transfer over wifi between computer and mobile phone using python

Question

I'd like to be able to transfer files between my mobile phone and computer. The phone is a smartphone that can run python 2.5.4 and the computer is running windows xp (with python 2.5.4 and 3.1.1).

I'd like to have a simple python program on the phone that can send files to the computer and get files from the computer. The phone end should only run when invoked, the computer end can be a server, although preferably something that does not use a lot of resources. The phone end should be able to figure out what's in the relevant directory on the computer.

At the moment I'm getting files from computer to phone by running windows web server on the computer (ugh) and a script with socket.set_ default _ access_point (so the program can pick my router's ssid or other transport) and urlretrieve (to get the files) on the phone. I'm sending files the other way by email using smtplib.

Suggestions would be appreciated, whether a general idea, existing programs or anything in between.

Answer 1

I would use paramiko. It's secure fast and really simple. How bout this?

So we start by importing the module, and specifying the log file:

import paramiko
paramiko.util.log_to_file('/tmp/paramiko.log')

We open an SSH transport:

host = "example.com"
port = 22
transport = paramiko.Transport((host, port))

Next we want to authenticate. We can do this with a password:

password = "example101"
username = "warrior"
transport.connect(username = username, password = password)

Another way is to use an SSH key:

import os
privatekeyfile = os.path.expanduser('~/.ssh/id_rsa')
mykey = paramiko.RSAKey.from_private_key_file(privatekeyfile)
username = 'warrior'
transport.connect(username = username, pkey = mykey)

Now we can start the SFTP client:

sftp = paramiko.SFTPClient.from_transport(transport)

Now lets pull a file across from the remote to the local system:

filepath = '/home/zeth/lenna.jpg'
localpath = '/home/zeth/lenna.jpg'
sftp.get(filepath, localpath)

Now lets go the other way:

filepath = '/home/zeth/lenna.jpg'
localpath = '/home/zeth/lenna.jpg'
sftp.put(filepath, localpath)

Lastly, we need to close the SFTP connection and the transport:

sftp.close()
transport.close()

How's that?? I have to give credit to this for the example.