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```
_ ___ _
| | |__ \ | |
_ __ ___ __ _| |_ ) | ___ __ _____| |__ 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 to it.
# How to deploy it?
mat2 is available in [Debian stable](https://packages.debian.org/stable/mat2).
```
# 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/sites-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.
Then configure the environment variable: `MAT2_ALLOW_ORIGIN_WHITELIST=https://myhost1.org https://myhost2.org`
Note that you can add multiple hosts from which you want to accept API requests. These need to be separated by
a space.
**IMPORTANT:** The default value if the variable is not set is: `Access-Control-Allow-Origin: *`
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 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.
# Deploy using Docker
You can find the ready to run docker image here:
https://0xacab.org/jvoisin/mat2-web/container_registry
Example:
`docker run -p 80:80 -d -e MAT2_ALLOW_ORIGIN_WHITELIST='https://myhost1.org' registry.0xacab.org/jvoisin/mat2-web:latest`
Make sure to add
`find /var/www/mat2-web/uploads/ -type f -mtime +1 -exec rm {} \;` as cron job
run inside the container.
# Development
Install docker and docker-compose and then run `docker-compose up` to setup
the docker dev environment. Mat2-web is now accessible on your host machine at `localhost:5000`.
Every code change triggers a restart of the app.
If you want to add/remove dependencies you have to rebuild the container.
# RESTful API
## Upload Endpoint
**Endpoint:** `/api/upload`
**HTTP Verbs:** POST
**Body:**
```json
{
"file_name": "my-filename.jpg",
"file": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=="
}
```
The `file_name` parameter takes the file name.
The `file` parameter is the base64 encoded file which will be cleaned.
**Example Response:**
```json
{
"output_filename": "fancy.cleaned.jpg",
"mime": "image/jpg",
"key": "81a541f9ebc0233d419d25ed39908b16f82be26a783f32d56c381559e84e6161",
"meta": {
"BitDepth": 8,
"ColorType": "RGB with Alpha",
"Compression": "Deflate/Inflate",
"Filter": "Adaptive",
"Interlace": "Noninterlaced"
},
"meta_after": {},
"download_link": "http://localhost:5000/download/81a541f9ebc0233d419d25ed39908b16f82be26a783f32d56c381559e84e6161/fancy.cleaned.jpg"
}
```
## Supported Extensions Endpoint
**Endpoint:** `/api/extension`
**HTTP Verbs:** GET
**Example Response (shortened):**
```json
[
".asc",
".avi",
".bat",
".bmp",
".brf",
".c",
".css",
".docx",
".epub"
]
```
# Docker
There are two Dockerfiles present in this repository. The file called `Dockerfile.development` is used for development
and `Dockerfile.production` is used for production deployments.
You can find the automated docker builds in the registry of this
repository: https://0xacab.org/jvoisin/mat2-web/container_registry
# Custom templates
You can override the default templates from `templates/` by putting replacements
into the directory path that's configured in `app.config['CUSTOM_TEMPLATES_DIR']`
(default `custom_templates/`).
# 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 dependent 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
|
