Source code of paste.sorz.org

paste.conf

server {
        server_name example.com;

        charset utf-8;

        location ~ "/t/([^/]+)(/[^/]+)?$" {
                alias /srv/http/paste/data/$1;
                gunzip on;
                gzip_static always;
                default_type text/plain;
                expires 90d;
        }

        location / {
                root /srv/http/paste/;
                index index.html;
        }

        location /data {
                deny all;
        }

        location /new {
                include proxy_params;
                proxy_pass http://127.0.0.1:8080;
                client_max_body_size 8M;
        }
}

paste.py

#!/usr/bin/env python3
import os
from random import SystemRandom
import time
import gzip
from flask import Flask, redirect, request
app = Flask(__name__)


STORAGE_PATH = "/srv/http/paste/data"
VIEW_PATH = "/t/%s"
ID_LENGTH = 5
ID_CHOICE = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnoprstuvwxy345678'
ID_RETRY = 2
LIMIT_COUNT = 50
LIMIT_INTERVAL = 5 * 60
GZIP_LEVEL = 9
GZIP_THRESHOLD = 120

limit_time = time.time()
limit_count = 0
random = SystemRandom()

def _get_random_id():
    return ''.join([random.choice(ID_CHOICE) for i in range(ID_LENGTH)])


def _get_path(sid):
    return os.path.join(STORAGE_PATH, "%s.gz" % sid)


@app.route("/new", methods=['POST'])
def new():
    global limit_time, limit_count
    if time.time() - limit_time > LIMIT_INTERVAL:
        limit_time = time.time()
        limit_count = 0
    elif limit_count > LIMIT_COUNT:
        return "Ops, please contact administrator and retry in minutes.", 503
    limit_count += 1

    sid = _get_random_id()
    retry = 0
    while retry < ID_RETRY and os.path.exists(_get_path(sid)):
        retry += 1
        sid = _get_random_id()
    if retry >= ID_RETRY:
        return "Bad luck! Please contact administrator.", 500

    text = request.form['text']
    if len(text) <= GZIP_THRESHOLD:
        with open(_get_path(sid)[:-3], 'wt', encoding='utf-8') as out:
            out.write(text)
    else:
        with gzip.open(_get_path(sid), 'wt', GZIP_LEVEL, 'utf-8') as out:
            out.write(text)


    return redirect(VIEW_PATH % sid)


if __name__ == "__main__":
    app.run(port=8080)

paste.service

[Unit]
Description=Paste nginx backend deamon.

[Service]
Type=simple
User=http
Group=http
WorkingDirectory=/path/to/paste/
ExecStart=/path/to/paste/env/bin/python paste.py

[Install]
WantedBy=multi-user.target