Awesome

pomsky - lightweight webshell

What is pomsky?

Pomskies are robust like siberian huskies and small like pomeranians.

Pomsky is a very simple and rudimentary service to call programms via http. To share files with python you can run python -m SimpleHTTPServer. To execute programms or functions call python pomsky.py.

Pomsky executes user defined programms. The second main feature is the workingfile. You can edit the workingfile via pomsky and use it as input for your scripts or programms (See What can i do with pomsky?).

Warning

There is no security logic in pomsky and it is not at all suitable for production! So if you run pomsky as root (not recommended) all commands will be executed as root.

Design Goals

Dependency Free

You need no extra packages, no easy_install no pip. Pomsky use only standard python librarys.

Python Version Independent

Pomsky is tested from python version 2.3 to 3.6. See Dockerfile or .travis.yml for more information.

Lightweight

Pomsky currently has a file size of 12KB.

What do i need?

Just python. Install via Github.

There is no dependency hell with pomksy. You only need python on your system.

How to try?

curl https://raw.githubusercontent.com/mperlet/pomsky/master/pomsky.py -o pomsky.py

Help

python pomsky.py -h

pomsky v0.0.1
usage: python pomsky.py [options]
Available options are:
  -h        prints help
  -w<FILE>  sets the workingfile, default: /tmp/pomsky.txt
  -p<PORT>  changes the port, default: 8888
  -d<DEBUG> sets the debug command, default: "du -h *"
  -a#<CMD>  sets a command a0 to a9 are free slots to define commands
            default: "ls > /dev/null"
  -v        verbose mode

Example:
    python pomsky.py -w"top.dat" -a0"ps -ax > top.dat" -a1"ls > top.dat"

What can i do with pomsky?

Here some examples what you can do with pomsky.

Video-Downloader

python pomsky.py -w"video_links.txt" -a0"youtube-dl --batch-file video_links.txt"

That creates a simple web ui for youtube-dl.

Start, stop and edit a service

python pomsky.py -w"/etc/systemd/my_service.service" -a0"systemctl start my_service.service" -a0"systemctl stop my_service.service"

Where are the tests?

The tests are based on curl requests/responses. So you need curl ¯_(ツ)_/¯.

./test.sh && echo "OK" || echo "FAIL"

You can test against multiple python versions with docker.

./TestAllPythonVersionsWithDocker.sh

Fun

Generate a binary with cython

Generate a binary with cython via:

# create C source-code
cython3 --embed pomsky.py

# compile with clang or gcc
clang $(python3-config --cflags --ldflags) pomsky.c -o pomsky

# run pomsky
./pomsky

Example setup with caddy and autossh

pomsky and autossh on raspberry pi at home

Start pomsky on the local machine

python pomsky.py -p8888 -w"video_links.txt" -a0"youtube-dl --batch-file video_links.txt"

Start autossh to open a tunnel on a remote server

autossh -f -M 9999 -p2222 -NC -R 8888:localhost:8888 my@remoteServer.org

caddy on the remote servier to make pomsky available with https

caddy

Caddyfile for pomsky

pomksy.remoteServer.org {
    proxy / localhost:8888
}

Start caddy

/usr/local/bin/caddy -conf=/etc/caddy/Caddyfile

TODO-List

• solve encoding problems
• enhance test cases
• support for grumpy
• HTML in workingfile is not escaped (bug or feature?)

License

MIT License

Copyright (c) 2017 Mathias Perlet

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.