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Django storage backend that can be used to serve files via lighttpd's mod_secdownload module.
Python
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secdownload_storage
LICENSE
MANIFEST.in
README.rst
setup.py

README.rst

django-secdownload-storage

PYPI Package

Django storage backend that can be used to serve files via lighttpd's mod_secdownload module. This storage backend is an extension to the reqular FileSystemStorage that will generate proper signed download urls.

Installation

pip install django-secdownload-storage

or:

easy_install django-secdownload-storage

or via source checkout:

hg clone https://bitbucket.org/ionelmc/django-secdownload-storage
cd django-secdownload-storage
python setup.py install

Usage

In your django models you should add storage=SecDownloadFileSystemStorage() to the fields you want served via secdownload.

Required settings:

SEC_DOWNLOAD_ENABLED = True
SEC_DOWNLOAD_SECRET_KEY = 'VERYVERYSECRET'
SEC_DOWNLOAD_MEDIA_URL = MEDIA_URL + 'dl/'

Example model:

import secdownload_storage

class Foo(models.Model):
  secret_picture = models.ImageField(upload_to='secret-pictures', storage=secdownload_storage.SecDownloadFileSystemStorage())

You need to enable mod_secdownload and have configuration similar to this (see http://redmine.lighttpd.net/wiki/1/Docs:ModSecDownload for more info):

secdownload.secret = "VERYVERYSECRET"
secdownload.document-root = "/path/to/media"
secdownload.uri-prefix = "/dl/"
secdownload.timeout = 3600

Also, note that you should disallow access to those files in the lighttpd configuration as they would be served with your regular media files. Eg:

$HTTP["url"] =~ "^/media/secret-pictures" {
    url.access-deny = ("")
}

Configuration

  • SEC_DOWNLOAD_ENABLED - set this to False to disable signing the urls and generate them like FileSystemStorage. This is useful for development (if you use django's devserver).
  • SEC_DOWNLOAD_SECRET_KEY - this is the secret key that is used to sign the requests
  • SEC_DOWNLOAD_MEDIA_URL - this is the prefix path that's used instead of MEDIA_URL when SEC_DOWNLOAD_ENABLED is set to True. If SEC_DOWNLOAD_ENABLED is set to False SecDownloadFileSystemStorage will use MEDIA_URL for the prefix instead.
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