ShareX custom uploader/destination server written in Python (Flask).

I created this mostly for my personal use, but if you have any suggestions, ideas or improvements feel free to open a new issue (pull requests are also welcome).

Endpoints

Route	HTTP method	Description
/	GET	Index page with some text just to make sure this application works.
/uploads/<filename>	GET	Route to serve a given file from uploads directory.
/url/<token>	GET	Redirects you to the URL for given short URL token.
/api/sharex/upload	GET	ShareX custom uploader configuration for files, you can import this to ShareX from Destinations -> Custom uploader settings -> Import -> From URL
/api/sharex/shorten	GET	ShareX custom uploader configuration for short URLs, you can import this to ShareX from Destinations -> Custom uploader settings -> Import -> From URL
/api/upload	POST	Route for file uploads.
/api/shorten	POST	Route for URL shortening.
/api/delete-short-url/<hmac_hash>/<token>	GET	ShareX deletion URL for short URLs.
/api/delete-file/<hmac_hash>/<filename>	GET	ShareX deletion URL for files.

Setup

Below you'll find two examples on how to setup this application.

Development

1. Clone the repository

git clone https://github.com/vremes/shrpy.git

2. Move to cloned repository directory and install requirements

cd shrpy
pip3 install -r requirements.txt

3. Setup .env file, see Configuration for additional information

cp .env_template .env
nano .env

• You must set FLASK_SECRET to something, good way to generate secrets is the following command

  python -c "from secrets import token_urlsafe; print(token_urlsafe(64))"
  

4. Run Flask built-in development server

python3 wsgi.py

Production

1. Install NGINX and Supervisor

apt install nginx supervisor

2. Install Gunicorn and Gevent

pip3 install gunicorn gevent

3. Clone the repository to /var/www/

git clone https://github.com/vremes/shrpy.git /var/www/shrpy

4. Move to cloned repository directory and install requirements

cd /var/www/shrpy/
pip3 install -r requirements.txt

5. Setup .env file, see Configuration for additional information

cp .env_template .env
nano .env

• You must set FLASK_SECRET to something, good way to generate secrets is the following command

  python -c "from secrets import token_urlsafe; print(token_urlsafe(64))"
  

6. Configure Supervisor to run Gunicorn, see Gunicorn Documentation for additional information

nano /etc/supervisor/conf.d/shrpy.conf

• Example configuration:

  [program:shrpy]
  directory=/var/www/shrpy
  command=gunicorn --bind=127.0.0.1:8000 --worker-class=gevent wsgi:application
  autostart=true
  autorestart=true
  stderr_logfile=/var/log/shrpy.err.log
  stdout_logfile=/var/log/shrpy.out.log
  

7. Update Supervisor configuration and configure NGINX

supervisorctl update
nano /etc/nginx/sites-available/shrpy.conf

• Example configuration:

  server {
      listen 80;
      server_name example.com; # <==== Change to your domain name
      client_max_body_size 16M;
  
      location / {
          include proxy_params;
          proxy_pass http://127.0.0.1:8000;
      }
  
      location /uploads {
          alias /var/www/shrpy/app/uploads/;
      }
  }
  

8. Enable NGINX configuration and restart NGINX

ln -s /etc/nginx/sites-available/shrpy.conf /etc/nginx/sites-enabled/
service nginx restart

9. Visit the root (/) path on your domain and it should be running:

{
    "message": "It works! Beep boop."
}

---

Configuration

shrpy looks for config values from OS environment variables.

You can set these environment variables in .env_template and then rename the .env_template to .env.

Key	Type	Default value	Description
FLASK_SECRET	str	None	Secret key for Flask application, see https://flask.palletsprojects.com/en/2.0.x/config/#SECRET_KEY
UPLOAD_DIR	str	/app/uploads/	Path for uploaded files.
ALLOWED_EXTENSIONS	str	png;jpg;jpeg;gif;webm;mp4;webp;txt;m4v	Allowed file extensions separated by semicolon.
CUSTOM_EXTENSIONS	str	video/x-m4v=m4v,image/webp=webp	Additional mimetype=extension pairs for Python mimetypes module
UPLOAD_PASSWORD	str	None	The password to protect /api/upload and /api/shorten endpoints.
DISCORD_WEBHOOKS	str	None	Discord webhook URLs separated by semicolon.
DISCORD_WEBHOOK_TIMEOUT	int	5	Timeout for Discord webhook requests in seconds.
MAGIC_BUFFER_BYTES	int	2048	The amount of bytes python-magic will read from uploaded file to determine its extension.
URL_TOKEN_BYTES	int	6	The amount of bytes secrets.token_urlsafe will use to generate shortened URLs.
USE_ORIGINAL_FILENAME	bool	True	If saved files should include original filename.

HTTP Headers

Name	Example value	Description
Authorization	hunter2	The plaintext password for file uploads and URL shortening, simply ignore this header if you don't use a password.