OD-Database

OD-Database is a web-crawling project that aims to index a very large number of file links and their basic metadata from open directories (misconfigured Apache/Nginx/FTP servers, or more often, mirrors of various public services).

Each crawler instance fetches tasks from the central server and pushes the result once completed. A single instance can crawl hundreds of websites at the same time (Both FTP and HTTP(S)) and the central server is capable of ingesting thousands of new documents per second.

The data is indexed into elasticsearch and made available via the web frontend (Currently hosted at https://od-db.the-eye.eu/). There is currently ~1.93 billion files indexed (total of about 300Gb of raw data). The raw data is made available as a CSV file here.

Contributing

Suggestions/concerns/PRs are welcome

Installation

Assuming you have Python 3 and git installed:

sudo apt install libssl-dev libcurl4-openssl-dev
git clone https://github.com/simon987/od-database
cd od-database
git submodule update --init --recursive
sudo pip3 install -r requirements.txt

Create /config.py and fill out the parameters. Sample config:

# Leave default values for no CAPTCHAs
CAPTCHA_LOGIN = False
CAPTCHA_SUBMIT = False
CAPTCHA_SEARCH = False
CAPTCHA_EVERY = 10

# Flask secret key for sessions
FLASK_SECRET = ""
RESULTS_PER_PAGE = (25, 50, 100, 250, 500, 1000)
# Allow ftp websites in /submit
SUBMIT_FTP = False
# Allow http(s) websites in /submit
SUBMIT_HTTP = True

Running the crawl server

The python crawler that was a part of this project is discontinued, the go implementation is currently in use.

Running the web server (debug)

cd od-database
python3 app.py

Running the web server with Nginx (production)

Install dependencies:

sudo apt install build-essential python-dev redis-server
sudo pip install uwsgi

Adjust the path in od-database.ini
Configure nginx (on Debian 9: /etc/nginx/sites-enabled/default):

server {
        ...

        include uwsgi_params;
        location / {
                uwsgi_pass 127.0.0.1:3031;
        }
        
        ...
}

Configure Elasticsearch

PUT _template/default
{
  "index_patterns": ["*"],
  "order": -1,
  "settings": {
    "number_of_shards": "50",
    "number_of_replicas": "0",
    "codec" : "best_compression",
    "routing_partition_size" : 5
  }
}

Start uwsgi:

uwsgi od-database.ini

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