```
                 _   ___                     _     
                | | |__ \                   | |    
 _ __ ___   __ _| |_   ) | ___ __      _____| |__   Trashing your meta,
| '_ ` _ \ / _` | __| / / |___|\ \ /\ / / _ \ '_ \    keeping your data,
| | | | | | (_| | |_ / /_       \ V  V /  __/ |_) |     within your browser.
|_| |_| |_|\__,_|\__|____|       \_/\_/ \___|_.__/ 
```

This is an online version of [mat2](https://0xacab.org/jvoisin/mat2).
Keep in mind that this is a beta version, don't rely on it for anything
serious, yet.

# Demo instance

There is a demo instance deployed a [mat2-web.dustri.org](https://mat2-web.dustri.org).
Please don't upload any sensitive files on it.

# How to deploy it?

Since mat2 isn't available in Debian stable
[yet](https://0xacab.org/jvoisin/mat2/issues/76), you might want to add the
following to your `/etc/apt/preferences.d/` to be able to install `mat2` 
via apt:

```
Package: *
Pin: release o=Debian,a=unstable
Pin-Priority: 10
```

Then:

```
# apt install uwsgi uwsgi-plugin-python3 git mat2
# apt install nginx-light  # if you prefer nginx
# apt install apache2 libapache2-mod-proxy-uwsgi  # if you prefer Apache2
# cd /var/www/
# git clone https://0xacab.org/jvoisin/mat2-web.git
# mkdir ./mat2-web/uploads/
# chown -R www-data:www-data ./mat2-web
```

Since [uWSGI](https://uwsgi-docs.readthedocs.io/en/latest/) isn't fun to
configure, feel free to copy
[this file](https://0xacab.org/jvoisin/mat2-web/tree/master/config/uwsgi.config)
to `/etc/uwsgi/apps-enabled/mat2-web.ini` and
[this one](https://0xacab.org/jvoisin/mat2-web/tree/master/config/nginx.config)
to `/etc/nginx/site-enabled/mat2-web`.

Nginx is the recommended web engine, but you can also use Apache if you prefer,
by copying [this file](https://0xacab.org/jvoisin/mat2-web/tree/master/config/apache2.config)
to your `/etc/apache2/sites-enabled/mat2-web` file.

Finally, restart uWSGI and your web server:

```
systemctl restart uwsgi
systemctl restart nginx/apache/…
```

It should now be working.

You should add `find /var/www/mat2-web/uploads/ -type f -mtime +1 -exec rm {} \;`
in a crontab to remove files that people might have uploaded but never
downloaded.

# Deploy via Ansible

If you happen to be using [Ansible](https://www.ansible.com/), there's an
Ansible role to deploy mat2-web on Debian, thanks to the amazing
[systemli](https://www.systemli.org/en/index.html) people:
[ansible-role-mat2-web](https://github.com/systemli/ansible-role-mat2-web)

The role installs mat2-web as a uWSGI service, and runs it as a dedicated
system user, installs bubblewrap to sandbox mat2 sandboxing and creates a garbage
collector cronjob to remove leftover files . Besides, it can create a
[dm-crypt](https://en.wikipedia.org/wiki/Dm-crypt) volume with random key for
the uploads folder, to ensure that the uploaded files won't be recoverable
between reboots.

# Threat model

- An attacker in possession of the very same file that a user wants to clean,
	along with its names, can perform a denial of service by continually
	requesting this file, and getting it before the user.
- An attacker in possession of only the name of a file that a user wants to
	clean can't perform a denial of service attack, since the path to download
	the cleaned file is not only dependant of the name, but also the content.
- The server should do its very best to delete files as soon as possible.

# Licenses

- mat2-web is under MIT
- The [raleway](https://github.com/impallari/Raleway/) font is under OFL1.1
- [normalize.css](https://github.com/necolas/normalize.css/) is under MIT
- [skeleton](http://getskeleton.com/) is under MIT