raincloud/README.org
2022-04-25 21:12:34 +02:00

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* raincloud
/A self-hosted file sharing cloud for you and your friends./
[[./images/screenshot.png]]
Your friends can't use tools like [[https://github.com/magic-wormhole/magic-wormhole][magic-wormhole]] and you don't want them to upload private data to dubious hosters?
You want to store a file from a computer you don't own and forgot your USB stick?
Then maybe /raincloud/ is for you.
A flat directory structure is used to generate HTTP routes on the fly.
All subdirectories in a base path form a route if they contain a =rc.toml= configuration file.
This configuration file can be used to allow downloading and uploading files to a directory or protecting routes with passwords.
** Example
Assuming you host /raincloud/ at =https://cloud.example.com= and your base path is =/var/www/public= with the following directory structure:
#+begin_example
public
├── alice
│   ├── big_buck_bunny.mkv
│   ├── elephants_dream.mkv
│   ├── rc.toml
│   └── the_daily_dweebs.mkv
└── inbox
├── logo.svg
└── rc.toml
#+end_example
Then the following two routes exist:
- =https://cloud.example.org/alice=
- =https://cloud.example.org/inbox=
All other routes return =404 Not Found=.
If the files are downloadable, people can upload new files or the files are password protected can be configured in the =rc.toml= files.
This repository contains the above listed =public= directory for testing /raincloud/ locally.
Just execute the following two command and navigate to [[http://localhost:5000/inbox][http://localhost:5000/inbox]].
: $ pip install -r requirements.txt
: $ ./run.py
The password for the =alice= directory is =movie_evening!=.
** Installation
Execute the following command in the repository to install /raincloud/ in your environment:
: $ pip install .
A WSGI server like [[https://gunicorn.org/][Gunicorn]] can then be used to serve the app for example like this:
: $ gunicorn "raincloud:create_app(base_path='public', secret_key='i_am_a_key')"
*Note* that currently only one worker makes sense due to server side session caching.
*** NixOS
This repository is also a [[https://nixos.wiki/wiki/Flakes][Nix Flake]] which provides a [[https://nixos.org/][NixOS]] module.
A minimal running instance can be setup for example like this:
#+begin_src nix
raincloud.nixosModule {
services.raincloud = {
enable = true;
basePath = "/var/lib/raincloud";
secretKey = "i_am_a_key";
};
}
#+end_src
All configuration options are:
| Option | Description | Type | Default value | Example |
|-------------+-----------------------------------+-------+---------------+----------------------|
| =address= | Bind address of the server | =str= | =127.0.0.1= | =0.0.0.0= |
| =port= | Port on which the server listens | =int= | =8000= | =5000= |
| =user= | User under which the server runs | =str= | =raincloud= | =alice= |
| =group= | Group under which the server runs | =str= | =raincloud= | =users= |
| =cloudName= | Name of the raincloud | =str= | =raincloud= | =bobsCloud= |
| =basePath= | Base path of the raincloud | =str= | | =/var/lib/raincloud= |
| =secretKey= | Flask secret key | =str= | | =i_am_a_key= |
** Configuration
/raincloud/ provides three configuration options which can be passed to =raincloud.create_app()=:
- =base_path= :: Base path of the raincloud
- =secret_key= :: Flask secret key
- =cloud_name= :: Cloud name (default: =raincloud=)
Set them for example like this:
: >>> app = raincloud.create_app(base_path='/home/alice/public', secret_key='super_secret', cloud_name='myCloud')
*** =rc.toml=
A =rc.toml= file can contain three configuration parameters.
Here is a default file which can be used as template:
#+begin_src toml
# Create a password hash with 'mkpasswd -m sha-256' or 'mkpasswd -m sha512' and paste it here.
# If the following line is uncommented and a hash is set, the directory is password protected.
#
# hashed_password = ""
# Set this to 'true' to allow file downloads from this directory
download = false
# Set this to 'true' to allow uploads to this directory
upload = false
#+end_src
** Troubleshooting
The filesize which can be uploaded may be limited by your web server.
When using /Nginx/ for example, the following configuration parameter can be used to increase the upload files size:
: client_max_body_size 100M;
Are you getting internal server errors?
Check the directory permissions.
The user which runs /raincloud/ must have at least =read= permissions to allow downloads and =execute= permissions to allow uploads.