WebImport

Import python libraries over HTTP

Goal

Allow you to load python modules from a system, when they are not present on the system.
Note: written for python 3
Note: The code has been tested on Ubuntu 16.04 LTS

Use cases

Running dynamic code from a read-only filesystem
Using non-standard packages on a machine without leaving traces
Testing code on devices you cannot install packages on

How to use

If WebImporter is available on a given system, you can import it as shown below:

import webimport
webimport.register(8000, location='some.http.server', override=False)

The register command takes 3 arguments.

port (Required): The port to connect to
location (optional): The host to connect to. Default: localhost
override: (optional): Try to import from remote first. Default: False

Example uses:

Running scripts with shared modules over ssh:

First Terminal

cd /path/to/python/libs
python3 -m "http.server" 8000

Second Terminal

cat webimport/webimport.py script.py | ssh -R 8000:localhost:8000 user@some.server 'cat -|python3'