Merge pull request #228 from jazzband/pre-commit-ci-update-config

updates:
- [github.com/pre-commit/mirrors-eslint: v9.39.1 → v10.0.0-alpha.0](https://github.com/pre-commit/mirrors-eslint/compare/v9.39.1...v10.0.0-alpha.0)
- [github.com/astral-sh/ruff-pre-commit: v0.14.4 → v0.14.5](https://github.com/astral-sh/ruff-pre-commit/compare/v0.14.4...v0.14.5)

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/release.yml

@@ -0,0 +1,40 @@
+name: Release
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+  build:
+    if: github.repository == 'jazzband/django-downloadview'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: 3.8
+
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install -U setuptools twine wheel
+
+      - name: Build package
+        run: |
+          python setup.py --version
+          python setup.py sdist --format=gztar bdist_wheel
+          twine check dist/*
+
+      - name: Upload packages to Jazzband
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: jazzband
+          password: ${{ secrets.JAZZBAND_RELEASE_KEY }}
+          repository_url: https://jazzband.co/projects/django-downloadview/upload

.github/workflows/test.yml

@@ -0,0 +1,61 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: build (Python ${{ matrix.python-version }}, Django ${{ matrix.django-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        django-version: ['4.2', '5.0', '5.1', '5.2', 'main']
+        exclude:
+        # Django 5.0 dropped support for Python <3.10
+        - django-version: '5.0'
+          python-version: '3.8'
+        - django-version: '5.0'
+          python-version: '3.9'
+        - django-version: 'main'
+          python-version: '3.8'
+        - django-version: 'main'
+          python-version: '3.9'
+
+    steps:
+    - uses: actions/checkout@v5
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v6
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Get pip cache dir
+      id: pip-cache
+      run: |
+        echo "::set-output name=dir::$(pip cache dir)"
+
+    - name: Cache
+      uses: actions/cache@v4
+      with:
+        path: ${{ steps.pip-cache.outputs.dir }}
+        key:
+          ${{ matrix.python-version }}-v1-${{ hashFiles('**/setup.py') }}
+        restore-keys: |
+          ${{ matrix.python-version }}-v1-
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --upgrade tox tox-gh-actions
+
+    - name: Tox tests
+      run: |
+        tox -v
+      env:
+        DJANGO: ${{ matrix.django-version }}
+
+    - name: Upload coverage
+      uses: codecov/codecov-action@v5
+      with:
+        name: Python ${{ matrix.python-version }}

.gitignore

@@ -6,6 +6,8 @@
 
 # Data files.
 /var/
+coverage.xml
+.coverage/
 
 # Python files.
 *.pyc
@@ -14,11 +16,17 @@
 
 # Tox files.
 /.tox/
+.eggs
+*.egg-info
 
 # Virtualenv files (created by tox).
 /build/
 /dist/
 
+# Virtual environments (created by user).
+/venv/
+
 # Editors' temporary buffers.
 .*.swp
 *~
+.idea

.isort.cfg

@@ -0,0 +1,16 @@
+[settings]
+# # Needed for black compatibility
+multi_line_output=3
+include_trailing_comma=True
+force_grid_wrap=0
+line_length=88
+combine_as_imports=True
+
+# List sections with django and
+known_django=django
+known_downloadview=django_downloadview
+
+sections=FUTURE,STDLIB,DJANGO,DOWNLOADVIEW,THIRDPARTY,FIRSTPARTY,LOCALFOLDER
+
+# If set, imports will be sorted within their section independent to the import_type.
+force_sort_within_sections=True

.pre-commit-config.yaml

@@ -0,0 +1,59 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v6.0.0
+    hooks:
+    -   id: check-toml
+    -   id: check-yaml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace
+    -   id: mixed-line-ending
+    -   id: file-contents-sorter
+        files: docs/spelling_wordlist.txt
+-   repo: https://github.com/pycqa/doc8
+    rev: v2.0.0
+    hooks:
+    -   id: doc8
+-   repo: https://github.com/adamchainz/django-upgrade
+    rev: 1.29.1
+    hooks:
+    -   id: django-upgrade
+        args: [--target-version, "4.2"]
+-   repo: https://github.com/pre-commit/pygrep-hooks
+    rev: v1.10.0
+    hooks:
+    -   id: rst-backticks
+    -   id: rst-directive-colons
+-   repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v4.0.0-alpha.8
+    hooks:
+    -   id: prettier
+        entry: env PRETTIER_LEGACY_CLI=1 prettier
+        types_or: [javascript, css]
+        args:
+        - --trailing-comma=es5
+-   repo: https://github.com/pre-commit/mirrors-eslint
+    rev: v9.39.1
+    hooks:
+    -   id: eslint
+        additional_dependencies:
+            - "eslint@v9.0.0-beta.1"
+            - "@eslint/js@v9.0.0-beta.1"
+            - "globals"
+        files: \.js?$
+        types: [file]
+        args:
+        - --fix
+-   repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: 'v0.14.5'
+    hooks:
+      - id: ruff
+        args: [--fix, --exit-non-zero-on-fix]
+      - id: ruff-format
+-   repo: https://github.com/tox-dev/pyproject-fmt
+    rev: v2.11.1
+    hooks:
+      - id: pyproject-fmt
+-   repo: https://github.com/abravalheri/validate-pyproject
+    rev: v0.24.1
+    hooks:
+      - id: validate-pyproject

.readthedocs.yaml

@@ -0,0 +1,18 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.10"
+
+sphinx:
+  configuration: docs/conf.py
+
+python:
+  install:
+  - method: pip
+    path: .

.travis.yml

@@ -1,23 +0,0 @@
-language: python
-env:
-  - TOXENV=py27-django15
-  - TOXENV=py27-django16
-  - TOXENV=py27-django17
-  - TOXENV=py27-django18
-  - TOXENV=py27-django19
-  - TOXENV=py33-django15
-  - TOXENV=py33-django16
-  - TOXENV=py33-django17
-  - TOXENV=py34-django15
-  - TOXENV=py34-django16
-  - TOXENV=py34-django17
-  - TOXENV=py34-django18
-  - TOXENV=py34-django19
-  - TOXENV=py35-django18
-  - TOXENV=py35-django19
-  - TOXENV=flake8
-  - TOXENV=sphinx
-  - TOXENV=readme
-install:
-script:
-  - make test

AUTHORS

@@ -4,12 +4,25 @@ Authors & contributors
 
 Maintainer: Benoît Bryon <benoit@marmelune.net>
 
-Original code by `Novapost <http://www.novapost.fr>`_ team:
+Original code by `PeopleDoc <https://www.people-doc.com/>`_ team:
 
-* Nicolas Tobo <https://github.com/nicolastobo>
-* Lauréline Guérin <https://github.com/zebuline>
-* Gregory Tappero <https://github.com/coulix>
-* Rémy Hubscher <remy.hubscher@novapost.fr>
+* Adam Chainz <adam@adamj.eu>
+* Aleksi Häkli <aleksi.hakli@iki.fi>
 * Benoît Bryon <benoit@marmelune.net>
-
-Developers: https://github.com/benoitbryon/django-downloadview/graphs/contributors
+* CJ <cjdreiss@users.noreply.github.com>
+* David Wolf <68775926+devidw@users.noreply.github.com>
+* Davide Setti <setti.davide89@gmail.com>
+* Erik Dykema <dykema@gmail.com>
+* Fabre Florian <ffabre@hybird.org>
+* Hasan Ramezani <hasan.r67@gmail.com>
+* Jannis Leidel <jannis@leidel.info>
+* John Hagen <johnthagen@gmail.com>
+* Mariusz Felisiak <felisiak.mariusz@gmail.com>
+* Martin Bächtold <martin@baechtold.me>
+* Nikhil Benesch <nikhil.benesch@gmail.com>
+* Omer Katz <omer.drow@gmail.com>
+* Peter Marheine <peter@taricorp.net>
+* René Leonhardt <rene.leonhardt@gmail.com>
+* Rémy HUBSCHER <hubscher.remy@gmail.com>
+* Tim Gates <tim.gates@iress.com>
+* zero13cool <zero13cool@yandex.ru>

CHANGELOG

@@ -4,6 +4,65 @@ Changelog
 This document describes changes between past releases. For information about
 future releases, check `milestones`_ and :doc:`/about/vision`.
 
+2.6.0 (unreleased)
+----------------
+
+- No changes yet
+
+
+2.5.0 (2025-10-28)
+----------------
+
+- Upgrade to Django 5.2 and Python 3.14
+
+
+2.4.0 (2024-08-05)
+------------------
+
+- Drop support for Python 3.6
+- Escape malicious filenames
+- Handle headers in XAccel responses
+
+
+2.3.0 (2022-01-11)
+------------------
+
+- Drop Django 3.0 support
+- Add Django 3.2 support
+- Add support for Python 3.10
+- Add support for Django 4.0
+- Remove support for Python 3.5 and Django 1.11
+- Add support for Python 3.9 and Django 3.1
+- Remove old urls syntax and adopt the new one
+- Move the project to the jazzband organization
+- Adopt black automatic formatting rules
+
+
+2.1.1 (2020-01-14)
+------------------
+
+- Fix missing function parameter. (#152)
+
+
+2.1 (2020-01-13)
+----------------
+
+- Add a SignedFileSystemStorage that signs file URLs for clients. (#151)
+
+
+2.0 (2020-01-07)
+----------------
+
+- Drop support for Python 2.7.
+- Add black and isort.
+
+
+1.10 (2020-01-07)
+-----------------
+
+- Introduced support from Django 1.11, 2.2 and 3.0.
+- Drop support of Django 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 2.0 and 2.1
+
 
 1.9 (2016-03-15)
 ----------------
@@ -207,4 +266,4 @@ Contains **backward incompatible changes.**
 
 .. target-notes::
 
-.. _`milestones`: https://github.com/benoitbryon/django-downloadview/milestones
+.. _`milestones`: https://github.com/jazzband/django-downloadview/milestones

CODE_OF_CONDUCT.md

@@ -0,0 +1,46 @@
+# Code of Conduct
+
+As contributors and maintainers of the Jazzband projects, and in the interest of
+fostering an open and welcoming community, we pledge to respect all people who
+contribute through reporting issues, posting feature requests, updating documentation,
+submitting pull requests or patches, and other activities.
+
+We are committed to making participation in the Jazzband a harassment-free experience
+for everyone, regardless of the level of experience, gender, gender identity and
+expression, sexual orientation, disability, personal appearance, body size, race,
+ethnicity, age, religion, or nationality.
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery
+- Personal attacks
+- Trolling or insulting/derogatory comments
+- Public or private harassment
+- Publishing other's private information, such as physical or electronic addresses,
+  without explicit permission
+- Other unethical or unprofessional conduct
+
+The Jazzband roadies have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are not
+aligned to this Code of Conduct, or to ban temporarily or permanently any contributor
+for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+By adopting this Code of Conduct, the roadies commit themselves to fairly and
+consistently applying these principles to every aspect of managing the jazzband
+projects. Roadies who do not follow or enforce the Code of Conduct may be permanently
+removed from the Jazzband roadies.
+
+This code of conduct applies both within project spaces and in public spaces when an
+individual is representing the project or its community.
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by
+contacting the roadies at `roadies@jazzband.co`. All complaints will be reviewed and
+investigated and will result in a response that is deemed necessary and appropriate to
+the circumstances. Roadies are obligated to maintain confidentiality with regard to the
+reporter of an incident.
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version
+1.3.0, available at [https://contributor-covenant.org/version/1/3/0/][version]
+
+[homepage]: https://contributor-covenant.org
+[version]: https://contributor-covenant.org/version/1/3/0/

CONTRIBUTING.rst

@@ -2,8 +2,16 @@
 Contributing
 ############
 
+
+.. image:: https://jazzband.co/static/img/jazzband.svg
+   :target: https://jazzband.co/
+   :alt: Jazzband
+
+This is a `Jazzband <https://jazzband.co>`_ project. By contributing you agree to abide by the `Contributor Code of Conduct <https://jazzband.co/about/conduct>`_ and follow the `guidelines <https://jazzband.co/about/guidelines>`_.
+
+
 This document provides guidelines for people who want to contribute to
-`django-downloadview`.
+``django-downloadview``.
 
 
 **************
@@ -42,11 +50,11 @@ Use topic branches
 Fork, clone
 ***********
 
-Clone `django-downloadview` repository (adapt to use your own fork):
+Clone ``django-downloadview`` repository (adapt to use your own fork):
 
 .. code:: sh
 
-   git clone git@github.com:benoitbryon/django-downloadview.git
+   git clone git@github.com:jazzband/django-downloadview.git
    cd django-downloadview/
 
 
@@ -54,7 +62,7 @@ Clone `django-downloadview` repository (adapt to use your own fork):
 Usual actions
 *************
 
-The `Makefile` is the reference card for usual actions in development
+The ``Makefile`` is the reference card for usual actions in development
 environment:
 
 * Install development toolkit with `pip`_: ``make develop``.
@@ -62,7 +70,7 @@ environment:
 * Run tests with `tox`_: ``make test``.
 
 * Build documentation: ``make documentation``. It builds `Sphinx`_
-  documentation in `var/docs/html/index.html`.
+  documentation in ``var/docs/html/index.html``.
 
 * Release project with `zest.releaser`_: ``make release``.
 
@@ -76,7 +84,7 @@ See also ``make help``.
 Demo project included
 *********************
 
-The `demo` included in project's repository is part of the tests and
+The ``demo`` included in project's repository is part of the tests and
 documentation. Maintain it along with code and documentation.
 
 
@@ -84,11 +92,11 @@ documentation. Maintain it along with code and documentation.
 
 .. target-notes::
 
-.. _`bugtracker`: 
-   https://github.com/benoitbryon/django-downloadview/issues
+.. _`bugtracker`:
+   https://github.com/jazzband/django-downloadview/issues
 .. _`rebase`: http://git-scm.com/book/en/Git-Branching-Rebasing
-.. _`merge-based rebase`: http://tech.novapost.fr/psycho-rebasing-en.html
+.. _`merge-based rebase`: https://tech.people-doc.com/psycho-rebasing.html
 .. _`pip`: https://pypi.python.org/pypi/pip/
-.. _`tox`: http://tox.testrun.org
+.. _`tox`: https://tox.readthedocs.io/
 .. _`Sphinx`: https://pypi.python.org/pypi/Sphinx/
 .. _`zest.releaser`: https://pypi.python.org/pypi/zest.releaser/

INSTALL

@@ -12,8 +12,8 @@ Install
 Requirements
 ************
 
-`django-downloadview` has been tested with `Python`_ 2.7, 3.3 and 3.4. Other
-versions may work, but they are not part of the test suite at the moment.
+`django-downloadview` has been tested with `Python`_ 3.7, 3.8, 3.9 and 3.10.
+Other versions may work, but they are not part of the test suite at the moment.
 
 Installing `django-downloadview` will automatically trigger the installation of
 the following requirements:

MANIFEST.in

@@ -6,4 +6,3 @@ include CONTRIBUTING.rst
 include INSTALL
 include LICENSE
 include README.rst
-include VERSION

Makefile

@@ -7,7 +7,8 @@
 #
 PIP = pip
 TOX = tox
-
+BLACK = black
+ISORT = isort
 
 #: help - Display callable targets.
 .PHONY: help
@@ -91,8 +92,10 @@ demo:
 runserver: demo
 	demo runserver
 
+.PHONY: black
+black:
+	$(BLACK) demo tests django_downloadview
 
-#: release - Tag and push to PyPI.
-.PHONY: release
-release:
-	$(TOX) -e release
+.PHONY: isort
+isort:
+	$(ISORT) --recursive django_downloadview tests demo

README.rst

@@ -2,16 +2,40 @@
 django-downloadview
 ###################
 
-`django-downloadview` makes it easy to serve files with `Django`_:
+.. image:: https://jazzband.co/static/img/badge.svg
+    :target: https://jazzband.co/
+    :alt: Jazzband
+
+.. image:: https://img.shields.io/pypi/v/django-downloadview.svg
+    :target: https://pypi.python.org/pypi/django-downloadview
+
+.. image:: https://img.shields.io/pypi/pyversions/django-downloadview.svg
+    :target: https://pypi.python.org/pypi/django-downloadview
+
+.. image:: https://img.shields.io/pypi/djversions/django-downloadview.svg
+    :target: https://pypi.python.org/pypi/django-downloadview
+
+.. image:: https://img.shields.io/pypi/dm/django-downloadview.svg
+    :target: https://pypi.python.org/pypi/django-downloadview
+
+.. image:: https://github.com/jazzband/django-downloadview/workflows/Test/badge.svg
+    :target: https://github.com/jazzband/django-downloadview/actions
+    :alt: GitHub Actions
+
+.. image:: https://codecov.io/gh/jazzband/django-downloadview/branch/master/graph/badge.svg
+    :target: https://codecov.io/gh/jazzband/django-downloadview
+    :alt: Coverage
+
+``django-downloadview`` makes it easy to serve files with `Django`_:
 
 * you manage files with Django (permissions, filters, generation, ...);
 
 * files are stored somewhere or generated somehow (local filesystem, remote
   storage, memory...);
 
-* `django-downloadview` helps you stream the files with very little code;
+* ``django-downloadview`` helps you stream the files with very little code;
 
-* `django-downloadview` helps you improve performances with reverse proxies,
+* ``django-downloadview`` helps you improve performances with reverse proxies,
   via mechanisms such as Nginx's X-Accel or Apache's X-Sendfile.
 
 
@@ -39,12 +63,11 @@ Let's serve a file stored in a file field of some model:
 Resources
 *********
 
-* Documentation: http://django-downloadview.readthedocs.org
+* Documentation: https://django-downloadview.readthedocs.io
 * PyPI page: http://pypi.python.org/pypi/django-downloadview
-* Code repository: https://github.com/benoitbryon/django-downloadview
-* Bugtracker: https://github.com/benoitbryon/django-downloadview/issues
-* Continuous integration: https://travis-ci.org/benoitbryon/django-downloadview
-* Roadmap: https://github.com/benoitbryon/django-downloadview/milestones
-
+* Code repository: https://github.com/jazzband/django-downloadview
+* Bugtracker: https://github.com/jazzband/django-downloadview/issues
+* Continuous integration: https://github.com/jazzband/django-downloadview/actions
+* Roadmap: https://github.com/jazzband/django-downloadview/milestones
 
 .. _`Django`: https://djangoproject.com

VERSION

@@ -1 +0,0 @@
-1.9

demo/README.rst

@@ -3,7 +3,7 @@ Demo project
 ############
 
 `Demo folder in project's repository`_ contains a Django project to illustrate
-`django-downloadview` usage.
+``django-downloadview`` usage.
 
 
 *****************************************
@@ -31,8 +31,8 @@ Deploy the demo
 
 System requirements:
 
-* `Python`_ version 2.7, available as ``python`` command.
-  
+* `Python`_ version 3.7+, available as ``python`` command.
+
   .. note::
 
      You may use `Virtualenv`_ to make sure the active ``python`` is the right
@@ -44,7 +44,7 @@ Execute:
 
 .. code-block:: sh
 
-   git clone git@github.com:benoitbryon/django-downloadview.git
+   git clone git@github.com:jazzband/django-downloadview.git
    cd django-downloadview/
    make runserver
 
@@ -66,7 +66,7 @@ References
 .. target-notes::
 
 .. _`demo folder in project's repository`:
-   https://github.com/benoitbryon/django-downloadview/tree/master/demo/demoproject/
+   https://github.com/jazzband/django-downloadview/tree/master/demo/demoproject/
 
 .. _`Python`: http://python.org
 .. _`Virtualenv`: http://virtualenv.org

demo/demoproject/apache/tests.py

@@ -1,8 +1,8 @@
 import os
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
 from django_downloadview.apache import assert_x_sendfile
 
@@ -12,32 +12,50 @@ from demoproject.apache.views import storage, storage_dir
 def setup_file():
     if not os.path.exists(storage_dir):
         os.makedirs(storage_dir)
-    storage.save('hello-world.txt', ContentFile(u'Hello world!\n'))
+    storage.save("hello-world.txt", ContentFile("Hello world!\n"))
 
 
 class OptimizedByMiddlewareTestCase(django.test.TestCase):
     def test_response(self):
         """'apache:optimized_by_middleware' returns X-Sendfile response."""
         setup_file()
-        url = reverse('apache:optimized_by_middleware')
+        url = reverse("apache:optimized_by_middleware")
         response = self.client.get(url)
         assert_x_sendfile(
             self,
             response,
             content_type="text/plain; charset=utf-8",
             basename="hello-world.txt",
-            file_path="/apache-optimized-by-middleware/hello-world.txt")
+            file_path="/apache-optimized-by-middleware/hello-world.txt",
+        )
 
 
 class OptimizedByDecoratorTestCase(django.test.TestCase):
     def test_response(self):
         """'apache:optimized_by_decorator' returns X-Sendfile response."""
         setup_file()
-        url = reverse('apache:optimized_by_decorator')
+        url = reverse("apache:optimized_by_decorator")
         response = self.client.get(url)
         assert_x_sendfile(
             self,
             response,
             content_type="text/plain; charset=utf-8",
             basename="hello-world.txt",
-            file_path="/apache-optimized-by-decorator/hello-world.txt")
+            file_path="/apache-optimized-by-decorator/hello-world.txt",
+        )
+
+
+class ModifiedHeadersTestCase(django.test.TestCase):
+    def test_response(self):
+        """'apache:modified_headers' returns X-Sendfile response."""
+        setup_file()
+        url = reverse("apache:modified_headers")
+        response = self.client.get(url)
+        assert_x_sendfile(
+            self,
+            response,
+            content_type="text/plain; charset=utf-8",
+            basename="hello-world.txt",
+            file_path="/apache-modified-headers/hello-world.txt",
+        )
+        self.assertEqual(response["X-Test"], "header")

demo/demoproject/apache/urls.py

@@ -1,13 +1,24 @@
 """URL mapping."""
-from django.conf.urls import patterns, url
 
+from django.urls import path
 
-urlpatterns = patterns(
-    'demoproject.apache.views',
-    url(r'^optimized-by-middleware/$',
-        'optimized_by_middleware',
-        name='optimized_by_middleware'),
-    url(r'^optimized-by-decorator/$',
-        'optimized_by_decorator',
-        name='optimized_by_decorator'),
-)
+from demoproject.apache import views
+
+app_name = "apache"
+urlpatterns = [
+    path(
+        "optimized-by-middleware/",
+        views.optimized_by_middleware,
+        name="optimized_by_middleware",
+    ),
+    path(
+        "optimized-by-decorator/",
+        views.optimized_by_decorator,
+        name="optimized_by_decorator",
+    ),
+    path(
+        "modified_headers/",
+        views.modified_headers,
+        name="modified_headers",
+    ),
+]

demo/demoproject/apache/views.py

@@ -6,17 +6,33 @@ from django.core.files.storage import FileSystemStorage
 from django_downloadview import StorageDownloadView
 from django_downloadview.apache import x_sendfile
 
-
-storage_dir = os.path.join(settings.MEDIA_ROOT, 'apache')
-storage = FileSystemStorage(location=storage_dir,
-                            base_url=''.join([settings.MEDIA_URL, 'apache/']))
+storage_dir = os.path.join(settings.MEDIA_ROOT, "apache")
+storage = FileSystemStorage(
+    location=storage_dir, base_url="".join([settings.MEDIA_URL, "apache/"])
+)
 
 
-optimized_by_middleware = StorageDownloadView.as_view(storage=storage,
-                                                      path='hello-world.txt')
+optimized_by_middleware = StorageDownloadView.as_view(
+    storage=storage, path="hello-world.txt"
+)
 
 
 optimized_by_decorator = x_sendfile(
-    StorageDownloadView.as_view(storage=storage, path='hello-world.txt'),
+    StorageDownloadView.as_view(storage=storage, path="hello-world.txt"),
     source_url=storage.base_url,
-    destination_dir='/apache-optimized-by-decorator/')
+    destination_dir="/apache-optimized-by-decorator/",
+)
+
+
+def _modified_headers(request):
+    view = StorageDownloadView.as_view(storage=storage, path="hello-world.txt")
+    response = view(request)
+    response["X-Test"] = "header"
+    return response
+
+
+modified_headers = x_sendfile(
+    _modified_headers,
+    source_url=storage.base_url,
+    destination_dir="/apache-modified-headers/",
+)

demo/demoproject/fixtures/demo.json

@@ -1,9 +1,9 @@
 [
     {
-        "pk": 1, 
-        "model": "object.document", 
+        "pk": 1,
+        "model": "object.document",
         "fields": {
-            "slug": "hello-world", 
+            "slug": "hello-world",
             "file": "object/hello-world.txt"
         }
     }

demo/demoproject/http/tests.py

@@ -1,5 +1,5 @@
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
 from django_downloadview import assert_download_response
 
@@ -7,20 +7,20 @@ from django_downloadview import assert_download_response
 class SimpleURLTestCase(django.test.TestCase):
     def test_download_response(self):
         """'simple_url' serves 'hello-world.txt' from Github."""
-        url = reverse('http:simple_url')
+        url = reverse("http:simple_url")
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content='Hello world!\n',
-                                 basename='hello-world.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content="Hello world!\n",
+            basename="hello-world.txt",
+            mime_type="text/plain",
+        )
 
 
 class AvatarTestCase(django.test.TestCase):
     def test_download_response(self):
         """HTTPDownloadView proxies Content-Type header."""
-        url = reverse('http:avatar_url')
+        url = reverse("http:avatar_url")
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 mime_type='image/png')
+        assert_download_response(self, response, mime_type="image/png")

demo/demoproject/http/urls.py

@@ -1,14 +1,9 @@
-from django.conf.urls import patterns, url
+from django.urls import path
 
 from demoproject.http import views
 
-
-urlpatterns = patterns(
-    '',
-    url(r'^simple_url/$',
-        views.simple_url,
-        name='simple_url'),
-    url(r'^avatar_url/$',
-        views.avatar_url,
-        name='avatar_url'),
-)
+app_name = "http"
+urlpatterns = [
+    path("simple_url/", views.simple_url, name="simple_url"),
+    path("avatar_url/", views.avatar_url, name="avatar_url"),
+]

demo/demoproject/http/views.py

@@ -4,15 +4,17 @@ from django_downloadview import HTTPDownloadView
 class SimpleURLDownloadView(HTTPDownloadView):
     def get_url(self):
         """Return URL of hello-world.txt file on GitHub."""
-        return 'https://raw.githubusercontent.com' \
-               '/benoitbryon/django-downloadview' \
-               '/b7f660c5e3f37d918b106b02c5af7a887acc0111' \
-               '/demo/demoproject/download/fixtures/hello-world.txt'
+        return (
+            "https://raw.githubusercontent.com"
+            "/jazzband/django-downloadview"
+            "/b7f660c5e3f37d918b106b02c5af7a887acc0111"
+            "/demo/demoproject/download/fixtures/hello-world.txt"
+        )
 
 
 class GithubAvatarDownloadView(HTTPDownloadView):
     def get_url(self):
-        return 'https://avatars0.githubusercontent.com/u/235204'
+        return "https://avatars0.githubusercontent.com/u/235204"
 
 
 simple_url = SimpleURLDownloadView.as_view()

demo/demoproject/lighttpd/tests.py

@@ -1,8 +1,8 @@
 import os
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
 from django_downloadview.lighttpd import assert_x_sendfile
 
@@ -12,32 +12,50 @@ from demoproject.lighttpd.views import storage, storage_dir
 def setup_file():
     if not os.path.exists(storage_dir):
         os.makedirs(storage_dir)
-    storage.save('hello-world.txt', ContentFile(u'Hello world!\n'))
+    storage.save("hello-world.txt", ContentFile("Hello world!\n"))
 
 
 class OptimizedByMiddlewareTestCase(django.test.TestCase):
     def test_response(self):
         """'lighttpd:optimized_by_middleware' returns X-Sendfile response."""
         setup_file()
-        url = reverse('lighttpd:optimized_by_middleware')
+        url = reverse("lighttpd:optimized_by_middleware")
         response = self.client.get(url)
         assert_x_sendfile(
             self,
             response,
             content_type="text/plain; charset=utf-8",
             basename="hello-world.txt",
-            file_path="/lighttpd-optimized-by-middleware/hello-world.txt")
+            file_path="/lighttpd-optimized-by-middleware/hello-world.txt",
+        )
 
 
 class OptimizedByDecoratorTestCase(django.test.TestCase):
     def test_response(self):
         """'lighttpd:optimized_by_decorator' returns X-Sendfile response."""
         setup_file()
-        url = reverse('lighttpd:optimized_by_decorator')
+        url = reverse("lighttpd:optimized_by_decorator")
         response = self.client.get(url)
         assert_x_sendfile(
             self,
             response,
             content_type="text/plain; charset=utf-8",
             basename="hello-world.txt",
-            file_path="/lighttpd-optimized-by-decorator/hello-world.txt")
+            file_path="/lighttpd-optimized-by-decorator/hello-world.txt",
+        )
+
+
+class ModifiedHeadersTestCase(django.test.TestCase):
+    def test_response(self):
+        """'lighttpd:modified_headers' returns X-Sendfile response."""
+        setup_file()
+        url = reverse("lighttpd:modified_headers")
+        response = self.client.get(url)
+        assert_x_sendfile(
+            self,
+            response,
+            content_type="text/plain; charset=utf-8",
+            basename="hello-world.txt",
+            file_path="/lighttpd-modified-headers/hello-world.txt",
+        )
+        self.assertEqual(response["X-Test"], "header")

demo/demoproject/lighttpd/urls.py

@@ -1,13 +1,24 @@
 """URL mapping."""
-from django.conf.urls import patterns, url
 
+from django.urls import path
 
-urlpatterns = patterns(
-    'demoproject.lighttpd.views',
-    url(r'^optimized-by-middleware/$',
-        'optimized_by_middleware',
-        name='optimized_by_middleware'),
-    url(r'^optimized-by-decorator/$',
-        'optimized_by_decorator',
-        name='optimized_by_decorator'),
-)
+from demoproject.lighttpd import views
+
+app_name = "lighttpd"
+urlpatterns = [
+    path(
+        "optimized-by-middleware/",
+        views.optimized_by_middleware,
+        name="optimized_by_middleware",
+    ),
+    path(
+        "optimized-by-decorator/",
+        views.optimized_by_decorator,
+        name="optimized_by_decorator",
+    ),
+    path(
+        "modified_headers/",
+        views.modified_headers,
+        name="modified_headers",
+    ),
+]

demo/demoproject/lighttpd/views.py

@@ -6,18 +6,33 @@ from django.core.files.storage import FileSystemStorage
 from django_downloadview import StorageDownloadView
 from django_downloadview.lighttpd import x_sendfile
 
-
-storage_dir = os.path.join(settings.MEDIA_ROOT, 'lighttpd')
+storage_dir = os.path.join(settings.MEDIA_ROOT, "lighttpd")
 storage = FileSystemStorage(
-    location=storage_dir,
-    base_url=''.join([settings.MEDIA_URL, 'lighttpd/']))
+    location=storage_dir, base_url="".join([settings.MEDIA_URL, "lighttpd/"])
+)
 
 
-optimized_by_middleware = StorageDownloadView.as_view(storage=storage,
-                                                      path='hello-world.txt')
+optimized_by_middleware = StorageDownloadView.as_view(
+    storage=storage, path="hello-world.txt"
+)
 
 
 optimized_by_decorator = x_sendfile(
-    StorageDownloadView.as_view(storage=storage, path='hello-world.txt'),
+    StorageDownloadView.as_view(storage=storage, path="hello-world.txt"),
     source_url=storage.base_url,
-    destination_dir='/lighttpd-optimized-by-decorator/')
+    destination_dir="/lighttpd-optimized-by-decorator/",
+)
+
+
+def _modified_headers(request):
+    view = StorageDownloadView.as_view(storage=storage, path="hello-world.txt")
+    response = view(request)
+    response["X-Test"] = "header"
+    return response
+
+
+modified_headers = x_sendfile(
+    _modified_headers,
+    source_url=storage.base_url,
+    destination_dir="/lighttpd-modified-headers/",
+)

demo/demoproject/manage.py

@@ -6,8 +6,7 @@ from django.core.management import execute_from_command_line
 
 
 def main():
-    os.environ.setdefault("DJANGO_SETTINGS_MODULE",
-                          "{package}.settings".format(package=__package__))
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", f"{__package__}.settings")
     execute_from_command_line(sys.argv)
 
 

demo/demoproject/nginx/tests.py

@@ -1,8 +1,8 @@
 import os
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
 from django_downloadview.nginx import assert_x_accel_redirect
 
@@ -12,14 +12,14 @@ from demoproject.nginx.views import storage, storage_dir
 def setup_file():
     if not os.path.exists(storage_dir):
         os.makedirs(storage_dir)
-    storage.save('hello-world.txt', ContentFile(u'Hello world!\n'))
+    storage.save("hello-world.txt", ContentFile("Hello world!\n"))
 
 
 class OptimizedByMiddlewareTestCase(django.test.TestCase):
     def test_response(self):
         """'nginx:optimized_by_middleware' returns X-Accel response."""
         setup_file()
-        url = reverse('nginx:optimized_by_middleware')
+        url = reverse("nginx:optimized_by_middleware")
         response = self.client.get(url)
         assert_x_accel_redirect(
             self,
@@ -30,14 +30,15 @@ class OptimizedByMiddlewareTestCase(django.test.TestCase):
             redirect_url="/nginx-optimized-by-middleware/hello-world.txt",
             expires=None,
             with_buffering=None,
-            limit_rate=None)
+            limit_rate=None,
+        )
 
 
 class OptimizedByDecoratorTestCase(django.test.TestCase):
     def test_response(self):
         """'nginx:optimized_by_decorator' returns X-Accel response."""
         setup_file()
-        url = reverse('nginx:optimized_by_decorator')
+        url = reverse("nginx:optimized_by_decorator")
         response = self.client.get(url)
         assert_x_accel_redirect(
             self,
@@ -48,4 +49,25 @@ class OptimizedByDecoratorTestCase(django.test.TestCase):
             redirect_url="/nginx-optimized-by-decorator/hello-world.txt",
             expires=None,
             with_buffering=None,
-            limit_rate=None)
+            limit_rate=None,
+        )
+
+
+class ModifiedHeadersTestCase(django.test.TestCase):
+    def test_response(self):
+        """'nginx:modified_headers' returns X-Sendfile response."""
+        setup_file()
+        url = reverse("nginx:modified_headers")
+        response = self.client.get(url)
+        assert_x_accel_redirect(
+            self,
+            response,
+            content_type="text/plain; charset=utf-8",
+            charset="utf-8",
+            basename="hello-world.txt",
+            redirect_url="/nginx-modified-headers/hello-world.txt",
+            expires=None,
+            with_buffering=None,
+            limit_rate=None,
+        )
+        self.assertEqual(response["X-Test"], "header")

demo/demoproject/nginx/urls.py

@@ -1,13 +1,24 @@
 """URL mapping."""
-from django.conf.urls import patterns, url
 
+from django.urls import path
 
-urlpatterns = patterns(
-    'demoproject.nginx.views',
-    url(r'^optimized-by-middleware/$',
-        'optimized_by_middleware',
-        name='optimized_by_middleware'),
-    url(r'^optimized-by-decorator/$',
-        'optimized_by_decorator',
-        name='optimized_by_decorator'),
-)
+from demoproject.nginx import views
+
+app_name = "nginx"
+urlpatterns = [
+    path(
+        "optimized-by-middleware/",
+        views.optimized_by_middleware,
+        name="optimized_by_middleware",
+    ),
+    path(
+        "optimized-by-decorator/",
+        views.optimized_by_decorator,
+        name="optimized_by_decorator",
+    ),
+    path(
+        "modified_headers/",
+        views.modified_headers,
+        name="modified_headers",
+    ),
+]

demo/demoproject/nginx/views.py

@@ -6,17 +6,33 @@ from django.core.files.storage import FileSystemStorage
 from django_downloadview import StorageDownloadView
 from django_downloadview.nginx import x_accel_redirect
 
-
-storage_dir = os.path.join(settings.MEDIA_ROOT, 'nginx')
-storage = FileSystemStorage(location=storage_dir,
-                            base_url=''.join([settings.MEDIA_URL, 'nginx/']))
+storage_dir = os.path.join(settings.MEDIA_ROOT, "nginx")
+storage = FileSystemStorage(
+    location=storage_dir, base_url="".join([settings.MEDIA_URL, "nginx/"])
+)
 
 
-optimized_by_middleware = StorageDownloadView.as_view(storage=storage,
-                                                      path='hello-world.txt')
+optimized_by_middleware = StorageDownloadView.as_view(
+    storage=storage, path="hello-world.txt"
+)
 
 
 optimized_by_decorator = x_accel_redirect(
-    StorageDownloadView.as_view(storage=storage, path='hello-world.txt'),
+    StorageDownloadView.as_view(storage=storage, path="hello-world.txt"),
     source_url=storage.base_url,
-    destination_url='/nginx-optimized-by-decorator/')
+    destination_url="/nginx-optimized-by-decorator/",
+)
+
+
+def _modified_headers(request):
+    view = StorageDownloadView.as_view(storage=storage, path="hello-world.txt")
+    response = view(request)
+    response["X-Test"] = "header"
+    return response
+
+
+modified_headers = x_accel_redirect(
+    _modified_headers,
+    source_url=storage.base_url,
+    destination_url="/nginx-modified-headers/",
+)

demo/demoproject/object/models.py

@@ -3,6 +3,6 @@ from django.db import models
 
 class Document(models.Model):
     slug = models.SlugField()
-    file = models.FileField(upload_to='object')
-    another_file = models.FileField(upload_to='object-other')
+    file = models.FileField(upload_to="object")
+    another_file = models.FileField(upload_to="object-other")
     basename = models.CharField(max_length=100)

demo/demoproject/object/tests.py

@@ -1,29 +1,24 @@
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
-from django_downloadview import temporary_media_root, assert_download_response
+from django_downloadview import assert_download_response, temporary_media_root
 
 from demoproject.object.models import Document
 
-
 # Fixtures.
-slug = 'hello-world'
-basename = 'hello-world.txt'
-file_name = 'file.txt'
-another_name = 'another_file.txt'
-file_content = 'Hello world!\n'
-another_content = 'Goodbye world!\n'
+slug = "hello-world"
+basename = "hello-world.txt"
+file_name = "file.txt"
+another_name = "another_file.txt"
+file_content = "Hello world!\n"
+another_content = "Goodbye world!\n"
 
 
 def setup_document():
     document = Document(slug=slug, basename=basename)
-    document.file.save(file_name,
-                       ContentFile(file_content),
-                       save=False)
-    document.another_file.save(another_name,
-                               ContentFile(another_content),
-                               save=False)
+    document.file.save(file_name, ContentFile(file_content), save=False)
+    document.another_file.save(another_name, ContentFile(another_content), save=False)
     document.save()
     return document
 
@@ -33,13 +28,15 @@ class DefaultFileTestCase(django.test.TestCase):
     def test_download_response(self):
         """'default_file' streams Document.file."""
         setup_document()
-        url = reverse('object:default_file', kwargs={'slug': slug})
+        url = reverse("object:default_file", kwargs={"slug": slug})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content=file_content,
-                                 basename=file_name,
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content=file_content,
+            basename=file_name,
+            mime_type="text/plain",
+        )
 
 
 class AnotherFileTestCase(django.test.TestCase):
@@ -47,13 +44,15 @@ class AnotherFileTestCase(django.test.TestCase):
     def test_download_response(self):
         """'another_file' streams Document.another_file."""
         setup_document()
-        url = reverse('object:another_file', kwargs={'slug': slug})
+        url = reverse("object:another_file", kwargs={"slug": slug})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content=another_content,
-                                 basename=another_name,
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content=another_content,
+            basename=another_name,
+            mime_type="text/plain",
+        )
 
 
 class DeserializedBasenameTestCase(django.test.TestCase):
@@ -61,13 +60,15 @@ class DeserializedBasenameTestCase(django.test.TestCase):
     def test_download_response(self):
         "'deserialized_basename' streams Document.file with custom basename."
         setup_document()
-        url = reverse('object:deserialized_basename', kwargs={'slug': slug})
+        url = reverse("object:deserialized_basename", kwargs={"slug": slug})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content=file_content,
-                                 basename=basename,
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content=file_content,
+            basename=basename,
+            mime_type="text/plain",
+        )
 
 
 class InlineFileTestCase(django.test.TestCase):
@@ -75,10 +76,12 @@ class InlineFileTestCase(django.test.TestCase):
     def test_download_response(self):
         "'inline_file_view' streams Document.file inline."
         setup_document()
-        url = reverse('object:inline_file', kwargs={'slug': slug})
+        url = reverse("object:inline_file", kwargs={"slug": slug})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content=file_content,
-                                 mime_type='text/plain',
-                                 attachment=False)
+        assert_download_response(
+            self,
+            response,
+            content=file_content,
+            mime_type="text/plain",
+            attachment=False,
+        )

demo/demoproject/object/urls.py

@@ -1,20 +1,27 @@
-from django.conf.urls import patterns, url
+from django.urls import re_path
 
 from demoproject.object import views
 
-
-urlpatterns = patterns(
-    '',
-    url(r'^default-file/(?P<slug>[a-zA-Z0-9_-]+)/$',
+app_name = "object"
+urlpatterns = [
+    re_path(
+        r"^default-file/(?P<slug>[a-zA-Z0-9_-]+)/$",
         views.default_file_view,
-        name='default_file'),
-    url(r'^another-file/(?P<slug>[a-zA-Z0-9_-]+)/$',
+        name="default_file",
+    ),
+    re_path(
+        r"^another-file/(?P<slug>[a-zA-Z0-9_-]+)/$",
         views.another_file_view,
-        name='another_file'),
-    url(r'^deserialized_basename/(?P<slug>[a-zA-Z0-9_-]+)/$',
+        name="another_file",
+    ),
+    re_path(
+        r"^deserialized_basename/(?P<slug>[a-zA-Z0-9_-]+)/$",
         views.deserialized_basename_view,
-        name='deserialized_basename'),
-    url(r'^inline-file/(?P<slug>[a-zA-Z0-9_-]+)/$',
+        name="deserialized_basename",
+    ),
+    re_path(
+        r"^inline-file/(?P<slug>[a-zA-Z0-9_-]+)/$",
         views.inline_file_view,
-        name='inline_file'),
-)
+        name="inline_file",
+    ),
+]

demo/demoproject/object/views.py

@@ -2,22 +2,19 @@ from django_downloadview import ObjectDownloadView
 
 from demoproject.object.models import Document
 
-
 #: Serve ``file`` attribute of ``Document`` model.
 default_file_view = ObjectDownloadView.as_view(model=Document)
 
 #: Serve ``another_file`` attribute of ``Document`` model.
 another_file_view = ObjectDownloadView.as_view(
-    model=Document,
-    file_field='another_file')
+    model=Document, file_field="another_file"
+)
 
 #: Serve ``file`` attribute of ``Document`` model, using client-side filename
 #: from model.
 deserialized_basename_view = ObjectDownloadView.as_view(
-    model=Document,
-    basename_field='basename')
+    model=Document, basename_field="basename"
+)
 
 #: Serve ``file`` attribute of ``Document`` model, inline (not as attachment).
-inline_file_view = ObjectDownloadView.as_view(
-    model=Document,
-    attachment=False)
+inline_file_view = ObjectDownloadView.as_view(model=Document, attachment=False)

demo/demoproject/path/tests.py

@@ -1,5 +1,5 @@
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
 from django_downloadview import assert_download_response
 
@@ -7,22 +7,26 @@ from django_downloadview import assert_download_response
 class StaticPathTestCase(django.test.TestCase):
     def test_download_response(self):
         """'static_path' serves 'fixtures/hello-world.txt'."""
-        url = reverse('path:static_path')
+        url = reverse("path:static_path")
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content='Hello world!\n',
-                                 basename='hello-world.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content="Hello world!\n",
+            basename="hello-world.txt",
+            mime_type="text/plain",
+        )
 
 
 class DynamicPathTestCase(django.test.TestCase):
     def test_download_response(self):
         """'dynamic_path' serves 'fixtures/{path}'."""
-        url = reverse('path:dynamic_path', kwargs={'path': 'hello-world.txt'})
+        url = reverse("path:dynamic_path", kwargs={"path": "hello-world.txt"})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content='Hello world!\n',
-                                 basename='hello-world.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content="Hello world!\n",
+            basename="hello-world.txt",
+            mime_type="text/plain",
+        )

demo/demoproject/path/urls.py

@@ -1,14 +1,13 @@
-from django.conf.urls import patterns, url
+from django.urls import path, re_path
 
 from demoproject.path import views
 
-
-urlpatterns = patterns(
-    '',
-    url(r'^static-path/$',
-        views.static_path,
-        name='static_path'),
-    url(r'^dynamic-path/(?P<path>[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{1,4})$',
+app_name = "path"
+urlpatterns = [
+    path("static-path/", views.static_path, name="static_path"),
+    re_path(
+        r"^dynamic-path/(?P<path>[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{1,4})$",
         views.dynamic_path,
-        name='dynamic_path'),
-)
+        name="dynamic_path",
+    ),
+]

demo/demoproject/path/views.py

@@ -2,13 +2,12 @@ import os
 
 from django_downloadview import PathDownloadView
 
-
 # Let's initialize some fixtures.
 app_dir = os.path.dirname(os.path.abspath(__file__))
 project_dir = os.path.dirname(app_dir)
-fixtures_dir = os.path.join(project_dir, 'fixtures')
+fixtures_dir = os.path.join(project_dir, "fixtures")
 #: Path to a text file that says 'Hello world!'.
-hello_world_path = os.path.join(fixtures_dir, 'hello-world.txt')
+hello_world_path = os.path.join(fixtures_dir, "hello-world.txt")
 
 #: Serve ``fixtures/hello-world.txt`` file.
 static_path = PathDownloadView.as_view(path=hello_world_path)
@@ -27,10 +26,11 @@ class DynamicPathDownloadView(PathDownloadView):
        :class:`StorageDownloadView`
 
     """
+
     def get_path(self):
         """Return path inside fixtures directory."""
         # Get path from URL resolvers or as_view kwarg.
-        relative_path = super(DynamicPathDownloadView, self).get_path()
+        relative_path = super().get_path()
         # Make it absolute.
         absolute_path = os.path.join(fixtures_dir, relative_path)
         return absolute_path

demo/demoproject/settings.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Django settings for django-downloadview demo project."""
+
 import os
 
 
@@ -7,20 +7,20 @@ import os
 demoproject_dir = os.path.dirname(os.path.abspath(__file__))
 demo_dir = os.path.dirname(demoproject_dir)
 root_dir = os.path.dirname(demo_dir)
-data_dir = os.path.join(root_dir, 'var')
-cfg_dir = os.path.join(root_dir, 'etc')
+data_dir = os.path.join(root_dir, "var")
+cfg_dir = os.path.join(root_dir, "etc")
 
 
 # Mandatory settings.
-ROOT_URLCONF = 'demoproject.urls'
-WSGI_APPLICATION = 'demoproject.wsgi.application'
+ROOT_URLCONF = "demoproject.urls"
+WSGI_APPLICATION = "demoproject.wsgi.application"
 
 
 # Database.
 DATABASES = {
-    'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': os.path.join(data_dir, 'db.sqlite'),
+    "default": {
+        "ENGINE": "django.db.backends.sqlite3",
+        "NAME": os.path.join(data_dir, "db.sqlite"),
     }
 }
 
@@ -29,51 +29,49 @@ DATABASES = {
 SECRET_KEY = "This is a secret made public on project's repository."
 
 # Media and static files.
-MEDIA_ROOT = os.path.join(data_dir, 'media')
-MEDIA_URL = '/media/'
-STATIC_ROOT = os.path.join(data_dir, 'static')
-STATIC_URL = '/static/'
+MEDIA_ROOT = os.path.join(data_dir, "media")
+MEDIA_URL = "/media/"
+STATIC_ROOT = os.path.join(data_dir, "static")
+STATIC_URL = "/static/"
 
 
 # Applications.
 INSTALLED_APPS = (
     # The actual django-downloadview demo.
-    'demoproject',
-    'demoproject.object',  # Demo around ObjectDownloadView
-    'demoproject.storage',  # Demo around StorageDownloadView
-    'demoproject.path',  # Demo around PathDownloadView
-    'demoproject.http',  # Demo around HTTPDownloadView
-    'demoproject.virtual',  # Demo around VirtualDownloadView
-    'demoproject.nginx',  # Sample optimizations for Nginx X-Accel.
-    'demoproject.apache',  # Sample optimizations for Apache X-Sendfile.
-    'demoproject.lighttpd',  # Sample optimizations for Lighttpd X-Sendfile.
+    "demoproject",
+    "demoproject.object",  # Demo around ObjectDownloadView
+    "demoproject.storage",  # Demo around StorageDownloadView
+    "demoproject.path",  # Demo around PathDownloadView
+    "demoproject.http",  # Demo around HTTPDownloadView
+    "demoproject.virtual",  # Demo around VirtualDownloadView
+    "demoproject.nginx",  # Sample optimizations for Nginx X-Accel.
+    "demoproject.apache",  # Sample optimizations for Apache X-Sendfile.
+    "demoproject.lighttpd",  # Sample optimizations for Lighttpd X-Sendfile.
     # Standard Django applications.
-    'django.contrib.auth',
-    'django.contrib.contenttypes',
-    'django.contrib.sessions',
-    'django.contrib.sites',
-    'django.contrib.messages',
-    'django.contrib.staticfiles',
-    # Stuff that must be at the end.
-    'django_nose',
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.sessions",
+    "django.contrib.sites",
+    "django.contrib.messages",
+    "django.contrib.staticfiles",
 )
 
 
 # BEGIN middlewares
-MIDDLEWARE_CLASSES = [
-    'django.middleware.common.CommonMiddleware',
-    'django.contrib.sessions.middleware.SessionMiddleware',
-    'django.middleware.csrf.CsrfViewMiddleware',
-    'django.contrib.auth.middleware.AuthenticationMiddleware',
-    'django.contrib.messages.middleware.MessageMiddleware',
-    'django_downloadview.SmartDownloadMiddleware'
+MIDDLEWARE = [
+    "django.middleware.common.CommonMiddleware",
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+    "django.contrib.messages.middleware.MessageMiddleware",
+    "django_downloadview.SmartDownloadMiddleware",
 ]
 # END middlewares
 
 
 # Specific configuration for django_downloadview.SmartDownloadMiddleware.
 # BEGIN backend
-DOWNLOADVIEW_BACKEND = 'django_downloadview.nginx.XAccelRedirectMiddleware'
+DOWNLOADVIEW_BACKEND = "django_downloadview.nginx.XAccelRedirectMiddleware"
 # END backend
 """Could also be:
 DOWNLOADVIEW_BACKEND = 'django_downloadview.apache.XSendfileMiddleware'
@@ -83,42 +81,54 @@ DOWNLOADVIEW_BACKEND = 'django_downloadview.lighttpd.XSendfileMiddleware'
 # BEGIN rules
 DOWNLOADVIEW_RULES = [
     {
-        'source_url': '/media/nginx/',
-        'destination_url': '/nginx-optimized-by-middleware/',
+        "source_url": "/media/nginx/",
+        "destination_url": "/nginx-optimized-by-middleware/",
     },
 ]
 # END rules
 DOWNLOADVIEW_RULES += [
     {
-        'source_url': '/media/apache/',
-        'destination_dir': '/apache-optimized-by-middleware/',
+        "source_url": "/media/apache/",
+        "destination_dir": "/apache-optimized-by-middleware/",
         # Bypass global default backend with additional argument "backend".
         # Notice that in general use case, ``DOWNLOADVIEW_BACKEND`` should be
         # enough. Here, the django_downloadview demo project needs to
         # demonstrate usage of several backends.
-        'backend': 'django_downloadview.apache.XSendfileMiddleware',
+        "backend": "django_downloadview.apache.XSendfileMiddleware",
     },
     {
-        'source_url': '/media/lighttpd/',
-        'destination_dir': '/lighttpd-optimized-by-middleware/',
+        "source_url": "/media/lighttpd/",
+        "destination_dir": "/lighttpd-optimized-by-middleware/",
         # Bypass global default backend with additional argument "backend".
         # Notice that in general use case, ``DOWNLOADVIEW_BACKEND`` should be
         # enough. Here, the django_downloadview demo project needs to
         # demonstrate usage of several backends.
-        'backend': 'django_downloadview.lighttpd.XSendfileMiddleware',
+        "backend": "django_downloadview.lighttpd.XSendfileMiddleware",
     },
 ]
 
 
 # Test/development settings.
 DEBUG = True
-TEMPLATE_DEBUG = DEBUG
-TEST_RUNNER = 'django_nose.NoseTestSuiteRunner'
-NOSE_ARGS = [
-    '--verbosity=2',
-    '--no-path-adjustment',
-    '--nocapture',
-    '--all-modules',
-    '--with-coverage',
-    '--with-doctest',
+
+
+TEMPLATES = [
+    {
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": [os.path.join(os.path.dirname(__file__), "templates")],
+        "OPTIONS": {
+            "debug": DEBUG,
+            "context_processors": [
+                # Insert your TEMPLATE_CONTEXT_PROCESSORS here or use this
+                # list if you haven't customized them:
+                "django.contrib.auth.context_processors.auth",
+                "django.template.context_processors.debug",
+                "django.template.context_processors.i18n",
+                "django.template.context_processors.media",
+                "django.template.context_processors.static",
+                "django.template.context_processors.tz",
+                "django.contrib.messages.context_processors.messages",
+            ],
+        },
+    },
 ]

demo/demoproject/storage/storage.py

@@ -1,4 +1,3 @@
 from django.core.files.storage import FileSystemStorage
 
-
 storage = FileSystemStorage()

demo/demoproject/storage/tests.py

@@ -2,18 +2,20 @@ import datetime
 import unittest
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 from django.http.response import HttpResponseNotModified
 import django.test
+from django.urls import reverse
 
-from django_downloadview import assert_download_response, temporary_media_root
-from django_downloadview import setup_view
+from django_downloadview import (
+    assert_download_response,
+    setup_view,
+    temporary_media_root,
+)
 
 from demoproject.storage import views
 
-
 # Fixtures.
-file_content = 'Hello world!\n'
+file_content = "Hello world!\n"
 
 
 def setup_file(path):
@@ -24,44 +26,48 @@ class StaticPathTestCase(django.test.TestCase):
     @temporary_media_root()
     def test_download_response(self):
         """'storage:static_path' streams file by path."""
-        setup_file('1.txt')
-        url = reverse('storage:static_path', kwargs={'path': '1.txt'})
+        setup_file("1.txt")
+        url = reverse("storage:static_path", kwargs={"path": "1.txt"})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content=file_content,
-                                 basename='1.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content=file_content,
+            basename="1.txt",
+            mime_type="text/plain",
+        )
 
     @temporary_media_root()
     def test_not_modified_download_response(self):
         """'storage:static_path' sends not modified response if unmodified."""
-        setup_file('1.txt')
-        url = reverse('storage:static_path', kwargs={'path': '1.txt'})
+        setup_file("1.txt")
+        url = reverse("storage:static_path", kwargs={"path": "1.txt"})
+        year = datetime.date.today().year + 4
         response = self.client.get(
-            url,
-            HTTP_IF_MODIFIED_SINCE='Sat, 29 Oct {year} 19:43:31 GMT'.format(
-                year=datetime.date.today().year + 4)
+            url, headers={"if-modified-since": f"Sat, 29 Oct {year} 19:43:31 GMT"}
         )
         self.assertTrue(isinstance(response, HttpResponseNotModified))
 
     @temporary_media_root()
     def test_modified_since_download_response(self):
         """'storage:static_path' streams file if modified."""
-        setup_file('1.txt')
-        url = reverse('storage:static_path', kwargs={'path': '1.txt'})
+        setup_file("1.txt")
+        url = reverse("storage:static_path", kwargs={"path": "1.txt"})
         response = self.client.get(
-            url,
-            HTTP_IF_MODIFIED_SINCE='Sat, 29 Oct 1980 19:43:31 GMT')
-        assert_download_response(self,
-                                 response,
-                                 content=file_content,
-                                 basename='1.txt',
-                                 mime_type='text/plain')
+            url, headers={"if-modified-since": "Sat, 29 Oct 1980 19:43:31 GMT"}
+        )
+        assert_download_response(
+            self,
+            response,
+            content=file_content,
+            basename="1.txt",
+            mime_type="text/plain",
+        )
 
 
 class DynamicPathIntegrationTestCase(django.test.TestCase):
     """Integration tests around ``storage:dynamic_path`` URL."""
+
     @temporary_media_root()
     def test_download_response(self):
         """'dynamic_path' streams file by generated path.
@@ -74,18 +80,21 @@ class DynamicPathIntegrationTestCase(django.test.TestCase):
         file in storage.
 
         """
-        setup_file('1.TXT')
-        url = reverse('storage:dynamic_path', kwargs={'path': '1.txt'})
+        setup_file("1.TXT")
+        url = reverse("storage:dynamic_path", kwargs={"path": "1.txt"})
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content=file_content,
-                                 basename='1.TXT',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content=file_content,
+            basename="1.TXT",
+            mime_type="text/plain",
+        )
 
 
 class DynamicPathUnitTestCase(unittest.TestCase):
     """Unit tests around ``views.DynamicStorageDownloadView``."""
+
     def test_get_path(self):
         """DynamicStorageDownloadView.get_path() returns uppercase path.
 
@@ -97,8 +106,10 @@ class DynamicPathUnitTestCase(unittest.TestCase):
         URL works. It targets only custom ``DynamicStorageDownloadView`` class.
 
         """
-        view = setup_view(views.DynamicStorageDownloadView(),
-                          django.test.RequestFactory().get('/fake-url'),
-                          path='dummy path')
+        view = setup_view(
+            views.DynamicStorageDownloadView(),
+            django.test.RequestFactory().get("/fake-url"),
+            path="dummy path",
+        )
         path = view.get_path()
-        self.assertEqual(path, 'DUMMY PATH')
+        self.assertEqual(path, "DUMMY PATH")

demo/demoproject/storage/urls.py

@@ -1,14 +1,17 @@
-from django.conf.urls import patterns, url
+from django.urls import re_path
 
 from demoproject.storage import views
 
-
-urlpatterns = patterns(
-    '',
-    url(r'^static-path/(?P<path>[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{1,4})$',
+app_name = "storage"
+urlpatterns = [
+    re_path(
+        r"^static-path/(?P<path>[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{1,4})$",
         views.static_path,
-        name='static_path'),
-    url(r'^dynamic-path/(?P<path>[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{1,4})$',
+        name="static_path",
+    ),
+    re_path(
+        r"^dynamic-path/(?P<path>[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{1,4})$",
         views.dynamic_path,
-        name='dynamic_path'),
-)
+        name="dynamic_path",
+    ),
+]

demo/demoproject/storage/views.py

@@ -2,7 +2,6 @@ from django.core.files.storage import FileSystemStorage
 
 from django_downloadview import StorageDownloadView
 
-
 storage = FileSystemStorage()
 
 
@@ -12,9 +11,10 @@ static_path = StorageDownloadView.as_view(storage=storage)
 
 class DynamicStorageDownloadView(StorageDownloadView):
     """Serve file of storage by path.upper()."""
+
     def get_path(self):
         """Return uppercase path."""
-        return super(DynamicStorageDownloadView, self).get_path().upper()
+        return super().get_path().upper()
 
 
 dynamic_path = DynamicStorageDownloadView.as_view(storage=storage)

demo/demoproject/tests.py

@@ -1,13 +1,14 @@
-# coding=utf8
 """Test suite for demoproject.download."""
-from django.core.urlresolvers import reverse
+
 from django.test import TestCase
+from django.urls import reverse
 
 
 class HomeViewTestCase(TestCase):
     """Test homepage."""
+
     def test_get(self):
         """Homepage returns HTTP 200."""
-        home_url = reverse('home')
+        home_url = reverse("home")
         response = self.client.get(home_url)
         self.assertEqual(response.status_code, 200)

demo/demoproject/urls.py

@@ -1,44 +1,44 @@
-from django.conf.urls import patterns, include, url
+from django.urls import include, path
 from django.views.generic import TemplateView
 
-
-home = TemplateView.as_view(template_name='home.html')
+home = TemplateView.as_view(template_name="home.html")
 
 
-urlpatterns = patterns(
-    '',
+urlpatterns = [
     # ObjectDownloadView.
-    url(r'^object/', include('demoproject.object.urls',
-                             app_name='object',
-                             namespace='object')),
+    path(
+        "object/",
+        include("demoproject.object.urls", namespace="object"),
+    ),
     # StorageDownloadView.
-    url(r'^storage/', include('demoproject.storage.urls',
-                              app_name='storage',
-                              namespace='storage')),
+    path(
+        "storage/",
+        include("demoproject.storage.urls", namespace="storage"),
+    ),
     # PathDownloadView.
-    url(r'^path/', include('demoproject.path.urls',
-                           app_name='path',
-                           namespace='path')),
+    path("path/", include("demoproject.path.urls", namespace="path")),
     # HTTPDownloadView.
-    url(r'^http/', include('demoproject.http.urls',
-                           app_name='http',
-                           namespace='http')),
+    path("http/", include("demoproject.http.urls", namespace="http")),
     # VirtualDownloadView.
-    url(r'^virtual/', include('demoproject.virtual.urls',
-                              app_name='virtual',
-                              namespace='virtual')),
+    path(
+        "virtual/",
+        include("demoproject.virtual.urls", namespace="virtual"),
+    ),
     # Nginx optimizations.
-    url(r'^nginx/', include('demoproject.nginx.urls',
-                            app_name='nginx',
-                            namespace='nginx')),
+    path(
+        "nginx/",
+        include("demoproject.nginx.urls", namespace="nginx"),
+    ),
     # Apache optimizations.
-    url(r'^apache/', include('demoproject.apache.urls',
-                             app_name='apache',
-                             namespace='apache')),
+    path(
+        "apache/",
+        include("demoproject.apache.urls", namespace="apache"),
+    ),
     # Lighttpd optimizations.
-    url(r'^lighttpd/', include('demoproject.lighttpd.urls',
-                               app_name='lighttpd',
-                               namespace='lighttpd')),
+    path(
+        "lighttpd/",
+        include("demoproject.lighttpd.urls", namespace="lighttpd"),
+    ),
     # An informative homepage.
-    url(r'$', home, name='home')
-)
+    path("", home, name="home"),
+]

demo/demoproject/virtual/tests.py

@@ -1,5 +1,5 @@
-from django.core.urlresolvers import reverse
 import django.test
+from django.urls import reverse
 
 from django_downloadview import assert_download_response
 
@@ -7,34 +7,40 @@ from django_downloadview import assert_download_response
 class TextTestCase(django.test.TestCase):
     def test_download_response(self):
         """'virtual:text' serves 'hello-world.txt' from unicode."""
-        url = reverse('virtual:text')
+        url = reverse("virtual:text")
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content='Hello world!\n',
-                                 basename='hello-world.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content="Hello world!\n",
+            basename="hello-world.txt",
+            mime_type="text/plain",
+        )
 
 
 class StringIOTestCase(django.test.TestCase):
     def test_download_response(self):
         """'virtual:stringio' serves 'hello-world.txt' from stringio."""
-        url = reverse('virtual:stringio')
+        url = reverse("virtual:stringio")
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content='Hello world!\n',
-                                 basename='hello-world.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content="Hello world!\n",
+            basename="hello-world.txt",
+            mime_type="text/plain",
+        )
 
 
 class GeneratedTestCase(django.test.TestCase):
     def test_download_response(self):
         """'virtual:generated' serves 'hello-world.txt' from generator."""
-        url = reverse('virtual:generated')
+        url = reverse("virtual:generated")
         response = self.client.get(url)
-        assert_download_response(self,
-                                 response,
-                                 content='Hello world!\n',
-                                 basename='hello-world.txt',
-                                 mime_type='text/plain')
+        assert_download_response(
+            self,
+            response,
+            content="Hello world!\n",
+            basename="hello-world.txt",
+            mime_type="text/plain",
+        )

demo/demoproject/virtual/urls.py

@@ -1,17 +1,10 @@
-from django.conf.urls import patterns, url
+from django.urls import path
 
 from demoproject.virtual import views
 
-
-urlpatterns = patterns(
-    '',
-    url(r'^text/$',
-        views.TextDownloadView.as_view(),
-        name='text'),
-    url(r'^stringio/$',
-        views.StringIODownloadView.as_view(),
-        name='stringio'),
-    url(r'^gerenated/$',
-        views.GeneratedDownloadView.as_view(),
-        name='generated'),
-)
+app_name = "virtual"
+urlpatterns = [
+    path("text/", views.TextDownloadView.as_view(), name="text"),
+    path("stringio/", views.StringIODownloadView.as_view(), name="stringio"),
+    path("gerenated/", views.GeneratedDownloadView.as_view(), name="generated"),
+]

demo/demoproject/virtual/views.py

@@ -1,33 +1,31 @@
-from six import StringIO
+from io import StringIO
 
 from django.core.files.base import ContentFile
 
-from django_downloadview import VirtualDownloadView
-from django_downloadview import VirtualFile
-from django_downloadview import TextIteratorIO
+from django_downloadview import TextIteratorIO, VirtualDownloadView, VirtualFile
 
 
 class TextDownloadView(VirtualDownloadView):
     def get_file(self):
         """Return :class:`django.core.files.base.ContentFile` object."""
-        return ContentFile(b"Hello world!\n", name='hello-world.txt')
+        return ContentFile(b"Hello world!\n", name="hello-world.txt")
 
 
 class StringIODownloadView(VirtualDownloadView):
     def get_file(self):
         """Return wrapper on ``six.StringIO`` object."""
-        file_obj = StringIO(u"Hello world!\n")
-        return VirtualFile(file_obj, name='hello-world.txt')
+        file_obj = StringIO("Hello world!\n")
+        return VirtualFile(file_obj, name="hello-world.txt")
 
 
 def generate_hello():
-    yield u'Hello '
-    yield u'world!'
-    yield u'\n'
+    yield "Hello "
+    yield "world!"
+    yield "\n"
 
 
 class GeneratedDownloadView(VirtualDownloadView):
     def get_file(self):
         """Return wrapper on ``StringIteratorIO`` object."""
         file_obj = TextIteratorIO(generate_hello())
-        return VirtualFile(file_obj, name='hello-world.txt')
+        return VirtualFile(file_obj, name="hello-world.txt")

demo/demoproject/wsgi.py

@@ -12,11 +12,11 @@ middleware here, or combine a Django application with an application of another
 framework.
 
 """
+
 import os
 
 from django.core.wsgi import get_wsgi_application
 
-
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "%s.settings" % __package__)
 
 # This application object is used by any WSGI server configured to use this

demo/setup.py

@@ -1,48 +1,26 @@
-# -*- coding: utf-8 -*-
-"""Python packaging."""
 import os
-
 from setuptools import setup
 
-
 here = os.path.abspath(os.path.dirname(__file__))
-project_root = os.path.dirname(here)
 
-
-NAME = 'django-downloadview-demo'
-DESCRIPTION = 'Serve files with Django and reverse-proxies.'
-README = open(os.path.join(here, 'README.rst')).read()
-VERSION = open(os.path.join(project_root, 'VERSION')).read().strip()
-AUTHOR = u'Benoît Bryon'
-EMAIL = u'benoit@marmelune.net'
-URL = 'https://django-downloadview.readthedocs.org/'
-CLASSIFIERS = ['Development Status :: 5 - Production/Stable',
-               'License :: OSI Approved :: BSD License',
-               'Programming Language :: Python :: 2.7',
-               'Framework :: Django']
-KEYWORDS = []
-PACKAGES = ['demoproject']
-REQUIREMENTS = [
-    'django-downloadview',
-    'django-nose']
-ENTRY_POINTS = {
-    'console_scripts': ['demo = demoproject.manage:main']
-}
-
-
-if __name__ == '__main__':  # Don't run setup() when we import this module.
-    setup(name=NAME,
-          version=VERSION,
-          description=DESCRIPTION,
-          long_description=README,
-          classifiers=CLASSIFIERS,
-          keywords=' '.join(KEYWORDS),
-          author=AUTHOR,
-          author_email=EMAIL,
-          url=URL,
-          license='BSD',
-          packages=PACKAGES,
-          include_package_data=True,
-          zip_safe=False,
-          install_requires=REQUIREMENTS,
-          entry_points=ENTRY_POINTS)
+setup(
+    name="django-downloadview-demo",
+    version="1.0",
+    description="Serve files with Django and reverse-proxies.",
+    long_description=open(os.path.join(here, "README.rst")).read(),
+    classifiers=[
+        "Development Status :: 5 - Production/Stable",
+        "License :: OSI Approved :: BSD License",
+        "Programming Language :: Python :: 3",
+        "Framework :: Django",
+    ],
+    author="Benoît Bryon",
+    author_email="benoit@marmelune.net",
+    url="https://django-downloadview.readthedocs.io/",
+    license="BSD",
+    packages=["demoproject"],
+    include_package_data=True,
+    zip_safe=False,
+    install_requires=["django-downloadview", "pytest-django"],
+    entry_points={"console_scripts": ["demo = demoproject.manage:main"]},
+)

django_downloadview/__init__.py

@@ -1,12 +1,8 @@
-# -*- coding: utf-8 -*-
 """Serve files with Django and reverse proxies."""
-import pkg_resources
 
+from django_downloadview.api import *  # NoQA
+
+import importlib.metadata
 
 #: Module version, as defined in PEP-0396.
-__version__ = pkg_resources.get_distribution(__package__.replace('-', '_')) \
-                           .version
-
-
-# API shortcuts.
-from django_downloadview.api import *  # NoQA
+__version__ = importlib.metadata.version(__package__.replace("-", "_"))

django_downloadview/apache/__init__.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Optimizations for Apache.
 
 See also `documentation of mod_xsendfile for Apache
@@ -6,8 +5,9 @@ See also `documentation of mod_xsendfile for Apache
 Apache optimizations </optimizations/apache>`.
 
 """
+
 # API shortcuts.
 from django_downloadview.apache.decorators import x_sendfile  # NoQA
+from django_downloadview.apache.middlewares import XSendfileMiddleware  # NoQA
 from django_downloadview.apache.response import XSendfileResponse  # NoQA
 from django_downloadview.apache.tests import assert_x_sendfile  # NoQA
-from django_downloadview.apache.middlewares import XSendfileMiddleware  # NoQA

django_downloadview/apache/decorators.py

@@ -1,7 +1,7 @@
-# -*- coding: utf-8 -*-
 """Decorators to apply Apache X-Sendfile on a specific view."""
-from django_downloadview.decorators import DownloadDecorator
+
 from django_downloadview.apache.middlewares import XSendfileMiddleware
+from django_downloadview.decorators import DownloadDecorator
 
 
 def x_sendfile(view_func, *args, **kwargs):

django_downloadview/apache/middlewares.py

@@ -1,6 +1,8 @@
 from django_downloadview.apache.response import XSendfileResponse
-from django_downloadview.middlewares import (ProxiedDownloadMiddleware,
-                                             NoRedirectionMatch)
+from django_downloadview.middlewares import (
+    NoRedirectionMatch,
+    ProxiedDownloadMiddleware,
+)
 
 
 class XSendfileMiddleware(ProxiedDownloadMiddleware):
@@ -12,11 +14,12 @@ class XSendfileMiddleware(ProxiedDownloadMiddleware):
     :py:class:`django_downloadview.decorators.DownloadDecorator`.
 
     """
-    def __init__(self, source_dir=None, source_url=None, destination_dir=None):
+
+    def __init__(
+        self, get_response=None, source_dir=None, source_url=None, destination_dir=None
+    ):
         """Constructor."""
-        super(XSendfileMiddleware, self).__init__(source_dir,
-                                                  source_url,
-                                                  destination_dir)
+        super().__init__(get_response, source_dir, source_url, destination_dir)
 
     def process_download_response(self, request, response):
         """Replace DownloadResponse instances by XSendfileResponse ones."""
@@ -24,7 +27,10 @@ class XSendfileMiddleware(ProxiedDownloadMiddleware):
             redirect_url = self.get_redirect_url(response)
         except NoRedirectionMatch:
             return response
-        return XSendfileResponse(file_path=redirect_url,
-                                 content_type=response['Content-Type'],
-                                 basename=response.basename,
-                                 attachment=response.attachment)
+        return XSendfileResponse(
+            file_path=redirect_url,
+            content_type=response["Content-Type"],
+            basename=response.basename,
+            attachment=response.attachment,
+            headers=response.headers,
+        )

django_downloadview/apache/response.py

@@ -1,18 +1,22 @@
-# -*- coding: utf-8 -*-
 """Apache's specific responses."""
+
 import os.path
 
-from django_downloadview.response import (ProxiedDownloadResponse,
-                                          content_disposition)
+from django_downloadview.response import ProxiedDownloadResponse, content_disposition
 
 
 class XSendfileResponse(ProxiedDownloadResponse):
     "Delegates serving file to Apache via X-Sendfile header."
-    def __init__(self, file_path, content_type, basename=None,
-                 attachment=True):
+
+    def __init__(
+        self, file_path, content_type, basename=None, attachment=True, headers=None
+    ):
         """Return a HttpResponse with headers for Apache X-Sendfile."""
-        super(XSendfileResponse, self).__init__(content_type=content_type)
+        # content-type must be provided only as keyword argument to response
+        if headers and content_type:
+            headers.pop("Content-Type", None)
+        super().__init__(content_type=content_type, headers=headers)
         if attachment:
             self.basename = basename or os.path.basename(file_path)
-            self['Content-Disposition'] = content_disposition(self.basename)
-        self['X-Sendfile'] = file_path
+            self["Content-Disposition"] = content_disposition(self.basename)
+        self["X-Sendfile"] = file_path

django_downloadview/apache/tests.py

@@ -1,13 +1,13 @@
-from six import iteritems
 from django_downloadview.apache.response import XSendfileResponse
 
 
-class XSendfileValidator(object):
+class XSendfileValidator:
     """Utility class to validate XSendfileResponse instances.
 
     See also :py:func:`assert_x_sendfile` shortcut function.
 
     """
+
     def __call__(self, test_case, response, **assertions):
         """Assert that ``response`` is a valid X-Sendfile response.
 
@@ -22,8 +22,8 @@ class XSendfileValidator(object):
 
         """
         self.assert_x_sendfile_response(test_case, response)
-        for key, value in iteritems(assertions):
-            assert_func = getattr(self, 'assert_%s' % key)
+        for key, value in assertions.items():
+            assert_func = getattr(self, "assert_%s" % key)
             assert_func(test_case, response, value)
 
     def assert_x_sendfile_response(self, test_case, response):
@@ -33,15 +33,15 @@ class XSendfileValidator(object):
         test_case.assertEqual(response.basename, value)
 
     def assert_content_type(self, test_case, response, value):
-        test_case.assertEqual(response['Content-Type'], value)
+        test_case.assertEqual(response["Content-Type"], value)
 
     def assert_file_path(self, test_case, response, value):
-        test_case.assertEqual(response['X-Sendfile'], value)
+        test_case.assertEqual(response["X-Sendfile"], value)
 
     def assert_attachment(self, test_case, response, value):
-        header = 'Content-Disposition'
+        header = "Content-Disposition"
         if value:
-            test_case.assertTrue(response[header].startswith('attachment'))
+            test_case.assertTrue(response[header].startswith("attachment"))
         else:
             test_case.assertFalse(header in response)
 

django_downloadview/api.py

@@ -1,27 +1,29 @@
-# -*- coding: utf-8 -*-
+# flake8: noqa
 """Declaration of API shortcuts."""
-from django_downloadview.io import (BytesIteratorIO,  # NoQA
-                                    TextIteratorIO)
-from django_downloadview.files import (StorageFile,  # NoQA
-                                       VirtualFile,
-                                       HTTPFile)
-from django_downloadview.response import (DownloadResponse,  # NoQA
-                                          ProxiedDownloadResponse)
-from django_downloadview.middlewares import (BaseDownloadMiddleware,  # NoQA
-                                             DownloadDispatcherMiddleware,
-                                             SmartDownloadMiddleware)
-from django_downloadview.views import (PathDownloadView,  # NoQA
-                                       ObjectDownloadView,
-                                       StorageDownloadView,
-                                       HTTPDownloadView,
-                                       VirtualDownloadView,
-                                       BaseDownloadView,
-                                       DownloadMixin)
-from django_downloadview.shortcuts import sendfile  # NoQA
-from django_downloadview.test import (assert_download_response,  # NoQA
-                                      setup_view,
-                                      temporary_media_root)
 
+from django_downloadview.files import HTTPFile, StorageFile, VirtualFile
+from django_downloadview.io import BytesIteratorIO, TextIteratorIO
+from django_downloadview.middlewares import (
+    BaseDownloadMiddleware,
+    DownloadDispatcherMiddleware,
+    SmartDownloadMiddleware,
+)
+from django_downloadview.response import DownloadResponse, ProxiedDownloadResponse
+from django_downloadview.shortcuts import sendfile
+from django_downloadview.test import (
+    assert_download_response,
+    setup_view,
+    temporary_media_root,
+)
+from django_downloadview.views import (
+    BaseDownloadView,
+    DownloadMixin,
+    HTTPDownloadView,
+    ObjectDownloadView,
+    PathDownloadView,
+    StorageDownloadView,
+    VirtualDownloadView,
+)
 
 # Backward compatibility.
 StringIteratorIO = TextIteratorIO

django_downloadview/decorators.py

@@ -5,6 +5,12 @@ See also decorators provided by server-specific modules, such as
 
 """
 
+from functools import wraps
+
+from django.conf import settings
+from django.core.exceptions import PermissionDenied
+from django.core.signing import BadSignature, SignatureExpired, TimestampSigner
+
 
 class DownloadDecorator(object):
     """View decorator factory to apply middleware to ``view_func``'s response.
@@ -17,16 +23,54 @@ class DownloadDecorator(object):
     method is applied on response.
 
     """
+
     def __init__(self, middleware_factory):
         """Create a download view decorator."""
         self.middleware_factory = middleware_factory
 
     def __call__(self, view_func, *middleware_args, **middleware_kwargs):
         """Return ``view_func`` decorated with response middleware."""
+
         def decorated(request, *view_args, **view_kwargs):
             """Return view's response modified by middleware."""
             response = view_func(request, *view_args, **view_kwargs)
-            middleware = self.middleware_factory(*middleware_args,
-                                                 **middleware_kwargs)
+            middleware = self.middleware_factory(*middleware_args, **middleware_kwargs)
             return middleware.process_response(request, response)
+
         return decorated
+
+
+def _signature_is_valid(request):
+    """
+    Validator that raises a PermissionDenied error on invalid and
+    mismatching signatures.
+    """
+
+    signer = TimestampSigner()
+    signature = request.GET.get("X-Signature")
+    expiration = getattr(settings, "DOWNLOADVIEW_URL_EXPIRATION", None)
+
+    try:
+        signature_path = signer.unsign(signature, max_age=expiration)
+    except SignatureExpired as e:
+        raise PermissionDenied("Signature expired") from e
+    except BadSignature as e:
+        raise PermissionDenied("Signature invalid") from e
+    except Exception as e:
+        raise PermissionDenied("Signature error") from e
+
+    if request.path != signature_path:
+        raise PermissionDenied("Signature mismatch")
+
+
+def signature_required(function):
+    """
+    Decorator that checks for X-Signature query parameter to authorize access to views.
+    """
+
+    @wraps(function)
+    def decorator(request, *args, **kwargs):
+        _signature_is_valid(request)
+        return function(request, *args, **kwargs)
+
+    return decorator

django_downloadview/exceptions.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Custom exceptions."""
 
 

django_downloadview/files.py

@@ -1,16 +1,15 @@
-# -*- coding: utf-8 -*-
 """File wrappers for use as exchange data between views and responses."""
-from __future__ import absolute_import
+
 from io import BytesIO
-from six.moves.urllib.parse import urlparse
+from urllib.parse import urlparse
 
 from django.core.files.base import File
 from django.utils.encoding import force_bytes
 
-import requests
-
 from django_downloadview.io import BytesIteratorIO
 
+import requests
+
 
 class StorageFile(File):
     """A file in a Django storage.
@@ -19,6 +18,7 @@ class StorageFile(File):
     but unrelated to model instance.
 
     """
+
     def __init__(self, storage, name, file=None):
         """Constructor.
 
@@ -35,8 +35,8 @@ class StorageFile(File):
 
     def _get_file(self):
         """Getter for :py:attr:``file`` property."""
-        if not hasattr(self, '_file') or self._file is None:
-            self._file = self.storage.open(self.name, 'rb')
+        if not hasattr(self, "_file") or self._file is None:
+            self._file = self.storage.open(self.name, "rb")
         return self._file
 
     def _set_file(self, file):
@@ -50,7 +50,7 @@ class StorageFile(File):
     #: Required by django.core.files.utils.FileProxy.
     file = property(_get_file, _set_file, _del_file)
 
-    def open(self, mode='rb'):
+    def open(self, mode="rb"):
         """Retrieves the specified file from storage and return open() result.
 
         Proxy to self.storage.open(self.name, mode).
@@ -122,7 +122,10 @@ class StorageFile(File):
         Proxy to self.storage.accessed_time(self.name).
 
         """
-        return self.storage.accessed(self.name)
+        try:
+            return self.storage.get_accessed_time(self.name)
+        except AttributeError:
+            return self.storage.accessed_time(self.name)
 
     @property
     def created_time(self):
@@ -131,7 +134,10 @@ class StorageFile(File):
         Proxy to self.storage.created_time(self.name).
 
         """
-        return self.storage.created_time(self.name)
+        try:
+            return self.storage.get_created_time(self.name)
+        except AttributeError:
+            return self.storage.created_time(self.name)
 
     @property
     def modified_time(self):
@@ -140,12 +146,16 @@ class StorageFile(File):
         Proxy to self.storage.modified_time(self.name).
 
         """
-        return self.storage.modified_time(self.name)
+        try:
+            return self.storage.get_modified_time(self.name)
+        except AttributeError:
+            return self.storage.modified_time(self.name)
 
 
 class VirtualFile(File):
     """Wrapper for files that live in memory."""
-    def __init__(self, file=None, name=u'', url='', size=None):
+
+    def __init__(self, file=None, name="", url="", size=None):
         """Constructor.
 
         file:
@@ -158,7 +168,7 @@ class VirtualFile(File):
           File URL.
 
         """
-        super(VirtualFile, self).__init__(file, name)
+        super().__init__(file, name)
         self.url = url
         if size is not None:
             self._size = size
@@ -174,7 +184,7 @@ class VirtualFile(File):
         return self._size
 
     def _set_size(self, value):
-        return super(VirtualFile, self)._set_size(value)
+        return super()._set_size(value)
 
     size = property(_get_size, _set_size)
 
@@ -196,7 +206,7 @@ class VirtualFile(File):
 
                 # If this is the end of a line, yield
                 # otherwise, wait for the next round
-                if line[-1] in ('\n', '\r'):
+                if line[-1] in ("\n", "\r"):
                     yield line
                 else:
                     buffer_ = line
@@ -215,19 +225,19 @@ class HTTPFile(File):
     Always sets "stream=True" in requests kwargs.
 
     """
-    def __init__(self, request_factory=requests.get, url='', name=u'',
-                 **kwargs):
+
+    def __init__(self, request_factory=requests.get, url="", name="", **kwargs):
         self.request_factory = request_factory
         self.url = url
         if name is None:
             parts = urlparse(url)
             if parts.path:  # Name from path.
-                self.name = parts.path.strip('/').rsplit('/', 1)[-1]
+                self.name = parts.path.strip("/").rsplit("/", 1)[-1]
             else:  # Name from domain.
                 self.name = parts.netloc
         else:
             self.name = name
-        kwargs['stream'] = True
+        kwargs["stream"] = True
         self.request_kwargs = kwargs
 
     @property
@@ -235,8 +245,7 @@ class HTTPFile(File):
         try:
             return self._request
         except AttributeError:
-            self._request = self.request_factory(self.url,
-                                                 **self.request_kwargs)
+            self._request = self.request_factory(self.url, **self.request_kwargs)
             return self._request
 
     @property
@@ -255,9 +264,9 @@ class HTTPFile(File):
         Reads response's "content-length" header.
 
         """
-        return self.request.headers['Content-Length']
+        return self.request.headers["Content-Length"]
 
     @property
     def content_type(self):
         """Return content type of the file (from original response)."""
-        return self.request.headers['Content-Type']
+        return self.request.headers["Content-Type"]

django_downloadview/io.py

@@ -1,9 +1,8 @@
-# -*- coding: utf-8 -*-
 """Low-level IO operations, for use with file wrappers."""
-from __future__ import absolute_import
+
 import io
 
-from django.utils.encoding import force_text, force_bytes
+from django.utils.encoding import force_bytes, force_str
 
 
 class TextIteratorIO(io.TextIOBase):
@@ -15,12 +14,13 @@ class TextIteratorIO(io.TextIOBase):
     * https://gist.github.com/anacrolix/3788413
 
     """
+
     def __init__(self, iterator):
         #: Iterator/generator for content.
         self._iter = iterator
 
         #: Internal buffer.
-        self._left = u''
+        self._left = ""
 
     def readable(self):
         return True
@@ -33,45 +33,45 @@ class TextIteratorIO(io.TextIOBase):
                 break
             else:
                 # Make sure we handle text.
-                self._left = force_text(self._left)
+                self._left = force_str(self._left)
         ret = self._left[:n]
-        self._left = self._left[len(ret):]
+        self._left = self._left[len(ret) :]
         return ret
 
     def read(self, n=None):
         """Return content up to ``n`` length."""
-        l = []
+        chunks = []
         if n is None or n < 0:
             while True:
                 m = self._read1()
                 if not m:
                     break
-                l.append(m)
+                chunks.append(m)
         else:
             while n > 0:
                 m = self._read1(n)
                 if not m:
                     break
                 n -= len(m)
-                l.append(m)
-        return u''.join(l)
+                chunks.append(m)
+        return "".join(chunks)
 
     def readline(self):
-        l = []
+        chunks = []
         while True:
-            i = self._left.find(u'\n')
+            i = self._left.find("\n")
             if i == -1:
-                l.append(self._left)
+                chunks.append(self._left)
                 try:
                     self._left = next(self._iter)
                 except StopIteration:
-                    self._left = u''
+                    self._left = ""
                     break
             else:
-                l.append(self._left[:i + 1])
-                self._left = self._left[i + 1:]
+                chunks.append(self._left[: i + 1])
+                self._left = self._left[i + 1 :]
                 break
-        return u''.join(l)
+        return "".join(chunks)
 
 
 class BytesIteratorIO(io.BytesIO):
@@ -83,12 +83,13 @@ class BytesIteratorIO(io.BytesIO):
     * https://gist.github.com/anacrolix/3788413
 
     """
+
     def __init__(self, iterator):
         #: Iterator/generator for content.
         self._iter = iterator
 
         #: Internal buffer.
-        self._left = b''
+        self._left = b""
 
     def readable(self):
         return True
@@ -103,40 +104,40 @@ class BytesIteratorIO(io.BytesIO):
                 # Make sure we handle text.
                 self._left = force_bytes(self._left)
         ret = self._left[:n]
-        self._left = self._left[len(ret):]
+        self._left = self._left[len(ret) :]
         return ret
 
     def read(self, n=None):
         """Return content up to ``n`` length."""
-        l = []
+        chunks = []
         if n is None or n < 0:
             while True:
                 m = self._read1()
                 if not m:
                     break
-                l.append(m)
+                chunks.append(m)
         else:
             while n > 0:
                 m = self._read1(n)
                 if not m:
                     break
                 n -= len(m)
-                l.append(m)
-        return b''.join(l)
+                chunks.append(m)
+        return b"".join(chunks)
 
     def readline(self):
-        l = []
+        chunks = []
         while True:
-            i = self._left.find(b'\n')
+            i = self._left.find(b"\n")
             if i == -1:
-                l.append(self._left)
+                chunks.append(self._left)
                 try:
                     self._left = next(self._iter)
                 except StopIteration:
-                    self._left = b''
+                    self._left = b""
                     break
             else:
-                l.append(self._left[:i + 1])
-                self._left = self._left[i + 1:]
+                chunks.append(self._left[: i + 1])
+                self._left = self._left[i + 1 :]
                 break
-        return b''.join(l)
+        return b"".join(chunks)

django_downloadview/lighttpd/__init__.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Optimizations for Lighttpd.
 
 See also `documentation of X-Sendfile for Lighttpd
@@ -7,8 +6,9 @@ See also `documentation of X-Sendfile for Lighttpd
 </optimizations/lighttpd>`.
 
 """
+
 # API shortcuts.
 from django_downloadview.lighttpd.decorators import x_sendfile  # NoQA
+from django_downloadview.lighttpd.middlewares import XSendfileMiddleware  # NoQA
 from django_downloadview.lighttpd.response import XSendfileResponse  # NoQA
 from django_downloadview.lighttpd.tests import assert_x_sendfile  # NoQA
-from django_downloadview.lighttpd.middlewares import XSendfileMiddleware  # NoQA

django_downloadview/lighttpd/decorators.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Decorators to apply Lighttpd X-Sendfile on a specific view."""
+
 from django_downloadview.decorators import DownloadDecorator
 from django_downloadview.lighttpd.middlewares import XSendfileMiddleware
 

django_downloadview/lighttpd/middlewares.py

@@ -1,6 +1,8 @@
 from django_downloadview.lighttpd.response import XSendfileResponse
-from django_downloadview.middlewares import (ProxiedDownloadMiddleware,
-                                             NoRedirectionMatch)
+from django_downloadview.middlewares import (
+    NoRedirectionMatch,
+    ProxiedDownloadMiddleware,
+)
 
 
 class XSendfileMiddleware(ProxiedDownloadMiddleware):
@@ -12,11 +14,12 @@ class XSendfileMiddleware(ProxiedDownloadMiddleware):
     :py:class:`django_downloadview.decorators.DownloadDecorator`.
 
     """
-    def __init__(self, source_dir=None, source_url=None, destination_dir=None):
+
+    def __init__(
+        self, get_response=None, source_dir=None, source_url=None, destination_dir=None
+    ):
         """Constructor."""
-        super(XSendfileMiddleware, self).__init__(source_dir,
-                                                  source_url,
-                                                  destination_dir)
+        super().__init__(get_response, source_dir, source_url, destination_dir)
 
     def process_download_response(self, request, response):
         """Replace DownloadResponse instances by XSendfileResponse ones."""
@@ -24,7 +27,10 @@ class XSendfileMiddleware(ProxiedDownloadMiddleware):
             redirect_url = self.get_redirect_url(response)
         except NoRedirectionMatch:
             return response
-        return XSendfileResponse(file_path=redirect_url,
-                                 content_type=response['Content-Type'],
-                                 basename=response.basename,
-                                 attachment=response.attachment)
+        return XSendfileResponse(
+            file_path=redirect_url,
+            content_type=response["Content-Type"],
+            basename=response.basename,
+            attachment=response.attachment,
+            headers=response.headers,
+        )

django_downloadview/lighttpd/response.py

@@ -1,18 +1,22 @@
-# -*- coding: utf-8 -*-
 """Lighttpd's specific responses."""
+
 import os.path
 
-from django_downloadview.response import (ProxiedDownloadResponse,
-                                          content_disposition)
+from django_downloadview.response import ProxiedDownloadResponse, content_disposition
 
 
 class XSendfileResponse(ProxiedDownloadResponse):
     "Delegates serving file to Lighttpd via X-Sendfile header."
-    def __init__(self, file_path, content_type, basename=None,
-                 attachment=True):
+
+    def __init__(
+        self, file_path, content_type, basename=None, attachment=True, headers=None
+    ):
         """Return a HttpResponse with headers for Lighttpd X-Sendfile."""
-        super(XSendfileResponse, self).__init__(content_type=content_type)
+        # content-type must be porvided only as keyword argument to response
+        if headers and content_type:
+            headers.pop("Content-Type", None)
+        super().__init__(content_type=content_type, headers=headers)
         if attachment:
             self.basename = basename or os.path.basename(file_path)
-            self['Content-Disposition'] = content_disposition(self.basename)
-        self['X-Sendfile'] = file_path
+            self["Content-Disposition"] = content_disposition(self.basename)
+        self["X-Sendfile"] = file_path

django_downloadview/lighttpd/tests.py

@@ -8,6 +8,7 @@ class XSendfileValidator(django_downloadview.apache.tests.XSendfileValidator):
     See also :py:func:`assert_x_sendfile` shortcut function.
 
     """
+
     def assert_x_sendfile_response(self, test_case, response):
         test_case.assertTrue(isinstance(response, XSendfileResponse))
 

django_downloadview/middlewares.py

@@ -1,12 +1,12 @@
-# -*- coding: utf-8 -*-
 """Base material for download middlewares.
 
 Download middlewares capture :py:class:`django_downloadview.DownloadResponse`
 responses and may replace them with optimized download responses.
 
 """
+
+import collections.abc
 import copy
-import collections
 import os
 
 from django.conf import settings
@@ -31,12 +31,20 @@ def is_download_response(response):
     return isinstance(response, DownloadResponse)
 
 
-class BaseDownloadMiddleware(object):
+class BaseDownloadMiddleware:
     """Base (abstract) Django middleware that handles download responses.
 
     Subclasses **must** implement :py:meth:`process_download_response` method.
 
     """
+
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        response = self.get_response(request)
+        return self.process_response(request, response)
+
     def is_download_response(self, response):
         """Return True if ``response`` can be considered as a file download.
 
@@ -60,6 +68,7 @@ class BaseDownloadMiddleware(object):
 
 class RealDownloadMiddleware(BaseDownloadMiddleware):
     """Download middleware that cannot handle virtual files."""
+
     def is_download_response(self, response):
         """Return True for DownloadResponse, except for "virtual" files.
 
@@ -68,18 +77,12 @@ class RealDownloadMiddleware(BaseDownloadMiddleware):
         whose file attribute have either an URL or a file name.
 
         """
-        if super(RealDownloadMiddleware, self).is_download_response(response):
-            try:
-                return response.file.url or response.file.name
-            except AttributeError:
-                return False
-            else:
-                return True
-        return False
+        return super().is_download_response(response) and bool(
+            getattr(response.file, "url", None) or getattr(response.file, "name", None)
+        )
 
 
-class DownloadDispatcherMiddleware(BaseDownloadMiddleware):
-    "Download middleware that dispatches job to several middleware instances."
+class DownloadDispatcher:
     def __init__(self, middlewares=AUTO_CONFIGURE):
         #: List of children middlewares.
         self.middlewares = middlewares
@@ -89,35 +92,48 @@ class DownloadDispatcherMiddleware(BaseDownloadMiddleware):
     def auto_configure_middlewares(self):
         """Populate :attr:`middlewares` from
         ``settings.DOWNLOADVIEW_MIDDLEWARES``."""
-        for (key, import_string, kwargs) in getattr(settings,
-                                                    'DOWNLOADVIEW_MIDDLEWARES',
-                                                    []):
+        for key, import_string, kwargs in getattr(
+            settings, "DOWNLOADVIEW_MIDDLEWARES", []
+        ):
             factory = import_member(import_string)
             middleware = factory(**kwargs)
             self.middlewares.append((key, middleware))
 
-    def process_download_response(self, request, response):
+    def dispatch(self, request, response):
         """Dispatches job to children middlewares."""
-        for (key, middleware) in self.middlewares:
+        for key, middleware in self.middlewares:
             response = middleware.process_response(request, response)
         return response
 
 
-class SmartDownloadMiddleware(BaseDownloadMiddleware):
+class DownloadDispatcherMiddleware(BaseDownloadMiddleware):
+    "Download middleware that dispatches job to several middleware instances."
+
+    def __init__(self, get_response, middlewares=AUTO_CONFIGURE):
+        super().__init__(get_response)
+        self.dispatcher = DownloadDispatcher(middlewares)
+
+    def process_download_response(self, request, response):
+        return self.dispatcher.dispatch(request, response)
+
+
+class SmartDownloadMiddleware(DownloadDispatcherMiddleware):
     """Easy to configure download middleware."""
-    def __init__(self,
-                 backend_factory=AUTO_CONFIGURE,
-                 backend_options=AUTO_CONFIGURE):
+
+    def __init__(
+        self,
+        get_response,
+        backend_factory=AUTO_CONFIGURE,
+        backend_options=AUTO_CONFIGURE,
+    ):
         """Constructor."""
-        #: :class:`DownloadDispatcher` instance that can hold multiple
-        #: backend instances.
-        self.dispatcher = DownloadDispatcherMiddleware(middlewares=[])
-        #: Callable (typically a class) to instanciate backend (typically a
+        super().__init__(get_response, middlewares=[])
+        #: Callable (typically a class) to instantiate backend (typically a
         #: :class:`DownloadMiddleware` subclass).
         self.backend_factory = backend_factory
         if self.backend_factory is AUTO_CONFIGURE:
             self.auto_configure_backend_factory()
-        #: List of positional or keyword arguments to instanciate backend
+        #: List of positional or keyword arguments to instantiate backend
         #: instances.
         self.backend_options = backend_options
         if self.backend_options is AUTO_CONFIGURE:
@@ -128,8 +144,9 @@ class SmartDownloadMiddleware(BaseDownloadMiddleware):
         try:
             self.backend_factory = import_member(settings.DOWNLOADVIEW_BACKEND)
         except AttributeError:
-            raise ImproperlyConfigured('SmartDownloadMiddleware requires '
-                                       'settings.DOWNLOADVIEW_BACKEND')
+            raise ImproperlyConfigured(
+                "SmartDownloadMiddleware requires settings.DOWNLOADVIEW_BACKEND"
+            )
 
     def auto_configure_backend_options(self):
         """Populate :attr:`dispatcher` using :attr:`factory` and
@@ -137,27 +154,24 @@ class SmartDownloadMiddleware(BaseDownloadMiddleware):
         try:
             options_list = copy.deepcopy(settings.DOWNLOADVIEW_RULES)
         except AttributeError:
-            raise ImproperlyConfigured('SmartDownloadMiddleware requires '
-                                       'settings.DOWNLOADVIEW_RULES')
+            raise ImproperlyConfigured(
+                "SmartDownloadMiddleware requires settings.DOWNLOADVIEW_RULES"
+            )
         for key, options in enumerate(options_list):
             args = []
             kwargs = {}
-            if isinstance(options, collections.Mapping):  # Using kwargs.
+            if isinstance(options, collections.abc.Mapping):  # Using kwargs.
                 kwargs = options
             else:
                 args = options
-            if 'backend' in kwargs:  # Specific backend for this rule.
-                factory = import_member(kwargs['backend'])
-                del kwargs['backend']
+            if "backend" in kwargs:  # Specific backend for this rule.
+                factory = import_member(kwargs["backend"])
+                del kwargs["backend"]
             else:  # Fallback to global backend.
                 factory = self.backend_factory
             middleware_instance = factory(*args, **kwargs)
             self.dispatcher.middlewares.append((key, middleware_instance))
 
-    def process_download_response(self, request, response):
-        """Use :attr:`dispatcher` to process download response."""
-        return self.dispatcher.process_download_response(request, response)
-
 
 class NoRedirectionMatch(Exception):
     """Response object does not match redirection rules."""
@@ -165,8 +179,13 @@ class NoRedirectionMatch(Exception):
 
 class ProxiedDownloadMiddleware(RealDownloadMiddleware):
     """Base class for middlewares that use optimizations of reverse proxies."""
-    def __init__(self, source_dir=None, source_url=None, destination_url=None):
+
+    def __init__(
+        self, get_response, source_dir=None, source_url=None, destination_url=None
+    ):
         """Constructor."""
+        super().__init__(get_response)
+
         self.source_dir = source_dir
         self.source_url = source_url
         self.destination_url = destination_url
@@ -174,7 +193,7 @@ class ProxiedDownloadMiddleware(RealDownloadMiddleware):
     def get_redirect_url(self, response):
         """Return redirect URL for file wrapped into response."""
         url = None
-        file_url = ''
+        file_url = ""
         if self.source_url:
             try:
                 file_url = response.file.url
@@ -182,9 +201,9 @@ class ProxiedDownloadMiddleware(RealDownloadMiddleware):
                 pass
             else:
                 if file_url.startswith(self.source_url):
-                    file_url = file_url[len(self.source_url):]
+                    file_url = file_url[len(self.source_url) :]
                     url = file_url
-        file_name = ''
+        file_name = ""
         if url is None and self.source_dir:
             try:
                 file_name = response.file.name
@@ -193,17 +212,21 @@ class ProxiedDownloadMiddleware(RealDownloadMiddleware):
             else:
                 if file_name.startswith(self.source_dir):
                     file_name = os.path.relpath(file_name, self.source_dir)
-                    url = file_name.replace(os.path.sep, '/')
+                    url = file_name.replace(os.path.sep, "/")
         if url is None:
-            message = ("""Couldn't capture/convert file attributes into a """
-                       """redirection. """
-                       """``source_url`` is "%(source_url)s", """
-                       """file's URL is "%(file_url)s". """
-                       """``source_dir`` is "%(source_dir)s", """
-                       """file's name is "%(file_name)s". """
-                       % {'source_url': self.source_url,
-                          'file_url': file_url,
-                          'source_dir': self.source_dir,
-                          'file_name': file_name})
+            message = (
+                """Couldn't capture/convert file attributes into a """
+                """redirection. """
+                """``source_url`` is "%(source_url)s", """
+                """file's URL is "%(file_url)s". """
+                """``source_dir`` is "%(source_dir)s", """
+                """file's name is "%(file_name)s". """
+                % {
+                    "source_url": self.source_url,
+                    "file_url": file_url,
+                    "source_dir": self.source_dir,
+                    "file_name": file_name,
+                }
+            )
             raise NoRedirectionMatch(message)
-        return '/'.join((self.destination_url.rstrip('/'), url.lstrip('/')))
+        return "/".join((self.destination_url.rstrip("/"), url.lstrip("/")))

django_downloadview/nginx/__init__.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Optimizations for Nginx.
 
 See also `Nginx X-accel documentation <http://wiki.nginx.org/X-accel>`_ and
@@ -6,9 +5,9 @@ See also `Nginx X-accel documentation <http://wiki.nginx.org/X-accel>`_ and
 </optimizations/nginx>`.
 
 """
+
 # API shortcuts.
 from django_downloadview.nginx.decorators import x_accel_redirect  # NoQA
+from django_downloadview.nginx.middlewares import XAccelRedirectMiddleware  # NoQA
 from django_downloadview.nginx.response import XAccelRedirectResponse  # NoQA
 from django_downloadview.nginx.tests import assert_x_accel_redirect  # NoQA
-from django_downloadview.nginx.middlewares import (  # NoQA
-    XAccelRedirectMiddleware)

django_downloadview/nginx/decorators.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Decorators to apply Nginx X-Accel on a specific view."""
+
 from django_downloadview.decorators import DownloadDecorator
 from django_downloadview.nginx.middlewares import XAccelRedirectMiddleware
 

django_downloadview/nginx/middlewares.py

@@ -3,8 +3,10 @@ import warnings
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 
-from django_downloadview.middlewares import (ProxiedDownloadMiddleware,
-                                             NoRedirectionMatch)
+from django_downloadview.middlewares import (
+    NoRedirectionMatch,
+    ProxiedDownloadMiddleware,
+)
 from django_downloadview.nginx.response import XAccelRedirectResponse
 
 
@@ -17,15 +19,26 @@ class XAccelRedirectMiddleware(ProxiedDownloadMiddleware):
     :py:class:`django_downloadview.decorators.DownloadDecorator`.
 
     """
-    def __init__(self, source_dir=None, source_url=None, destination_url=None,
-                 expires=None, with_buffering=None, limit_rate=None,
-                 media_root=None, media_url=None):
+
+    def __init__(
+        self,
+        get_response=None,
+        source_dir=None,
+        source_url=None,
+        destination_url=None,
+        expires=None,
+        with_buffering=None,
+        limit_rate=None,
+        media_root=None,
+        media_url=None,
+    ):
         """Constructor."""
         if media_url is not None:
-            warnings.warn("%s ``media_url`` is deprecated. Use "
-                          "``destination_url`` instead."
-                          % self.__class__.__name__,
-                          DeprecationWarning)
+            warnings.warn(
+                "%s ``media_url`` is deprecated. Use "
+                "``destination_url`` instead." % self.__class__.__name__,
+                DeprecationWarning,
+            )
             if destination_url is None:
                 destination_url = media_url
             else:
@@ -33,18 +46,20 @@ class XAccelRedirectMiddleware(ProxiedDownloadMiddleware):
         else:
             destination_url = destination_url
         if media_root is not None:
-            warnings.warn("%s ``media_root`` is deprecated. Use "
-                          "``source_dir`` instead." % self.__class__.__name__,
-                          DeprecationWarning)
+            warnings.warn(
+                "%s ``media_root`` is deprecated. Use "
+                "``source_dir`` instead." % self.__class__.__name__,
+                DeprecationWarning,
+            )
             if source_dir is None:
                 source_dir = media_root
             else:
                 source_dir = source_dir
         else:
             source_dir = source_dir
-        super(XAccelRedirectMiddleware, self).__init__(source_dir,
-                                                       source_url,
-                                                       destination_url)
+
+        super().__init__(get_response, source_dir, source_url, destination_url)
+
         self.expires = expires
         self.with_buffering = with_buffering
         self.limit_rate = limit_rate
@@ -62,13 +77,16 @@ class XAccelRedirectMiddleware(ProxiedDownloadMiddleware):
                 expires = response.expires
             except AttributeError:
                 expires = None
-        return XAccelRedirectResponse(redirect_url=redirect_url,
-                                      content_type=response['Content-Type'],
-                                      basename=response.basename,
-                                      expires=expires,
-                                      with_buffering=self.with_buffering,
-                                      limit_rate=self.limit_rate,
-                                      attachment=response.attachment)
+        return XAccelRedirectResponse(
+            redirect_url=redirect_url,
+            content_type=response["Content-Type"],
+            basename=response.basename,
+            expires=expires,
+            with_buffering=self.with_buffering,
+            limit_rate=self.limit_rate,
+            attachment=response.attachment,
+            headers=response.headers,
+        )
 
 
 class SingleXAccelRedirectMiddleware(XAccelRedirectMiddleware):
@@ -105,16 +123,20 @@ class SingleXAccelRedirectMiddleware(XAccelRedirectMiddleware):
          Replaced by ``NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL``.
 
     """
-    def __init__(self):
+
+    def __init__(self, get_response=None):
         """Use Django settings as configuration."""
         if settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL is None:
             raise ImproperlyConfigured(
-                'settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL is '
-                'required by %s middleware' % self.__class__.__name__)
-        super(SingleXAccelRedirectMiddleware, self).__init__(
+                "settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL is "
+                "required by %s middleware" % self.__class__.__name__
+            )
+        super().__init__(
+            get_response=get_response,
             source_dir=settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_DIR,
             source_url=settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_URL,
             destination_url=settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL,
             expires=settings.NGINX_DOWNLOAD_MIDDLEWARE_EXPIRES,
             with_buffering=settings.NGINX_DOWNLOAD_MIDDLEWARE_WITH_BUFFERING,
-            limit_rate=settings.NGINX_DOWNLOAD_MIDDLEWARE_LIMIT_RATE)
+            limit_rate=settings.NGINX_DOWNLOAD_MIDDLEWARE_LIMIT_RATE,
+        )

django_downloadview/nginx/response.py

@@ -1,33 +1,43 @@
-# -*- coding: utf-8 -*-
 """Nginx's specific responses."""
+
 from datetime import timedelta
 
 from django.utils.timezone import now
 
-from django_downloadview.response import (ProxiedDownloadResponse,
-                                          content_disposition)
+from django_downloadview.response import ProxiedDownloadResponse, content_disposition
 from django_downloadview.utils import content_type_to_charset, url_basename
 
 
 class XAccelRedirectResponse(ProxiedDownloadResponse):
     "Http response that delegates serving file to Nginx via X-Accel headers."
-    def __init__(self, redirect_url, content_type, basename=None, expires=None,
-                 with_buffering=None, limit_rate=None, attachment=True):
+
+    def __init__(
+        self,
+        redirect_url,
+        content_type,
+        basename=None,
+        expires=None,
+        with_buffering=None,
+        limit_rate=None,
+        attachment=True,
+        headers=None,
+    ):
         """Return a HttpResponse with headers for Nginx X-Accel-Redirect."""
-        super(XAccelRedirectResponse, self).__init__(content_type=content_type)
+        # content-type must be porvided only as keyword argument to response
+        if headers and content_type:
+            headers.pop("Content-Type", None)
+        super().__init__(content_type=content_type, headers=headers)
         if attachment:
-            self.basename = basename or url_basename(redirect_url,
-                                                     content_type)
-            self['Content-Disposition'] = content_disposition(self.basename)
-        self['X-Accel-Redirect'] = redirect_url
-        self['X-Accel-Charset'] = content_type_to_charset(content_type)
+            self.basename = basename or url_basename(redirect_url, content_type)
+            self["Content-Disposition"] = content_disposition(self.basename)
+        self["X-Accel-Redirect"] = redirect_url
+        self["X-Accel-Charset"] = content_type_to_charset(content_type)
         if with_buffering is not None:
-            self['X-Accel-Buffering'] = with_buffering and 'yes' or 'no'
+            self["X-Accel-Buffering"] = with_buffering and "yes" or "no"
         if expires:
             expire_seconds = timedelta(expires - now()).seconds
-            self['X-Accel-Expires'] = expire_seconds
+            self["X-Accel-Expires"] = expire_seconds
         elif expires is not None:  # We explicitely want it off.
-            self['X-Accel-Expires'] = 'off'
+            self["X-Accel-Expires"] = "off"
         if limit_rate is not None:
-            self['X-Accel-Limit-Rate'] = \
-                limit_rate and '%d' % limit_rate or 'off'
+            self["X-Accel-Limit-Rate"] = limit_rate and "%d" % limit_rate or "off"

django_downloadview/nginx/settings.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Django settings around Nginx X-Accel.
 
 .. warning::
@@ -8,26 +7,31 @@
    for details.
 
 """
+
 import warnings
 
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 
-
 # In version 1.3, former XAccelRedirectMiddleware has been renamed to
 # SingleXAccelRedirectMiddleware. So tell the users.
-middleware = 'django_downloadview.nginx.XAccelRedirectMiddleware'
-if middleware in settings.MIDDLEWARE_CLASSES:
+deprecated_middleware = "django_downloadview.nginx.XAccelRedirectMiddleware"
+
+
+if deprecated_middleware in settings.MIDDLEWARE:
     raise ImproperlyConfigured(
-        '{middleware} middleware has been renamed as of django-downloadview '
-        'version 1.3. You may use '
+        "{deprecated_middleware} middleware has been renamed as of "
+        "django-downloadview version 1.3. You may use "
         '"django_downloadview.nginx.SingleXAccelRedirectMiddleware" instead, '
-        'or upgrade to "django_downloadview.SmartDownloadDispatcher". ')
+        'or upgrade to "django_downloadview.SmartDownloadDispatcher". '
+    )
 
 
-deprecated_msg = 'settings.{deprecated} is deprecated. You should combine ' \
-                 '"django_downloadview.SmartDownloadDispatcher" with ' \
-                 'with DOWNLOADVIEW_BACKEND and DOWNLOADVIEW_RULES instead.'
+deprecated_msg = (
+    "settings.{deprecated} is deprecated. You should combine "
+    '"django_downloadview.SmartDownloadDispatcher" with '
+    "with DOWNLOADVIEW_BACKEND and DOWNLOADVIEW_RULES instead."
+)
 
 
 #: Default value for X-Accel-Buffering header.
@@ -42,10 +46,9 @@ deprecated_msg = 'settings.{deprecated} is deprecated. You should combine ' \
 #: If set to ``False``, Nginx buffering is disabled.
 #: If set to ``True``, Nginx buffering is enabled.
 DEFAULT_WITH_BUFFERING = None
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_WITH_BUFFERING'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_WITH_BUFFERING"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
 if not hasattr(settings, setting_name):
     setattr(settings, setting_name, DEFAULT_WITH_BUFFERING)
 
@@ -61,10 +64,9 @@ if not hasattr(settings, setting_name):
 #: If set to ``False``, Nginx limit rate is disabled.
 #: Else, it indicates the limit rate in bytes.
 DEFAULT_LIMIT_RATE = None
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_LIMIT_RATE'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_LIMIT_RATE"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
 if not hasattr(settings, setting_name):
     setattr(settings, setting_name, DEFAULT_LIMIT_RATE)
 
@@ -80,49 +82,43 @@ if not hasattr(settings, setting_name):
 #: If set to ``False``, Nginx buffering is disabled.
 #: Else, it indicates the expiration delay, in seconds.
 DEFAULT_EXPIRES = None
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_EXPIRES'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_EXPIRES"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
 if not hasattr(settings, setting_name):
     setattr(settings, setting_name, DEFAULT_EXPIRES)
 
 
 #: Default value for settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_DIR.
 DEFAULT_SOURCE_DIR = settings.MEDIA_ROOT
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_ROOT'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_ROOT"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
     DEFAULT_SOURCE_DIR = settings.NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_ROOT
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_DIR'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_DIR"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
 if not hasattr(settings, setting_name):
     setattr(settings, setting_name, DEFAULT_SOURCE_DIR)
 
 
 #: Default value for settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_URL.
 DEFAULT_SOURCE_URL = settings.MEDIA_URL
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_URL'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_URL"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
 if not hasattr(settings, setting_name):
     setattr(settings, setting_name, DEFAULT_SOURCE_URL)
 
 
 #: Default value for settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL.
 DEFAULT_DESTINATION_URL = None
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_URL'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_URL"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
     DEFAULT_SOURCE_DIR = settings.NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_URL
-setting_name = 'NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL'
+setting_name = "NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL"
 if hasattr(settings, setting_name):
-    warnings.warn(deprecated_msg.format(deprecated=setting_name),
-                  DeprecationWarning)
+    warnings.warn(deprecated_msg.format(deprecated=setting_name), DeprecationWarning)
 if not hasattr(settings, setting_name):
     setattr(settings, setting_name, DEFAULT_DESTINATION_URL)

django_downloadview/nginx/tests.py

@@ -1,13 +1,13 @@
-from six import iteritems
 from django_downloadview.nginx.response import XAccelRedirectResponse
 
 
-class XAccelRedirectValidator(object):
+class XAccelRedirectValidator:
     """Utility class to validate XAccelRedirectResponse instances.
 
     See also :py:func:`assert_x_accel_redirect` shortcut function.
 
     """
+
     def __call__(self, test_case, response, **assertions):
         """Assert that ``response`` is a valid X-Accel-Redirect response.
 
@@ -36,8 +36,8 @@ class XAccelRedirectValidator(object):
 
         """
         self.assert_x_accel_redirect_response(test_case, response)
-        for key, value in iteritems(assertions):
-            assert_func = getattr(self, 'assert_%s' % key)
+        for key, value in assertions.items():
+            assert_func = getattr(self, "assert_%s" % key)
             assert_func(test_case, response, value)
 
     def assert_x_accel_redirect_response(self, test_case, response):
@@ -47,45 +47,45 @@ class XAccelRedirectValidator(object):
         test_case.assertEqual(response.basename, value)
 
     def assert_content_type(self, test_case, response, value):
-        test_case.assertEqual(response['Content-Type'], value)
+        test_case.assertEqual(response["Content-Type"], value)
 
     def assert_redirect_url(self, test_case, response, value):
-        test_case.assertEqual(response['X-Accel-Redirect'], value)
+        test_case.assertEqual(response["X-Accel-Redirect"], value)
 
     def assert_charset(self, test_case, response, value):
-        test_case.assertEqual(response['X-Accel-Charset'], value)
+        test_case.assertEqual(response["X-Accel-Charset"], value)
 
     def assert_with_buffering(self, test_case, response, value):
-        header = 'X-Accel-Buffering'
+        header = "X-Accel-Buffering"
         if value is None:
             test_case.assertFalse(header in response)
         elif value:
-            test_case.assertEqual(header, 'yes')
+            test_case.assertEqual(header, "yes")
         else:
-            test_case.assertEqual(header, 'no')
+            test_case.assertEqual(header, "no")
 
     def assert_expires(self, test_case, response, value):
-        header = 'X-Accel-Expires'
+        header = "X-Accel-Expires"
         if value is None:
             test_case.assertFalse(header in response)
         elif not value:
-            test_case.assertEqual(header, 'off')
+            test_case.assertEqual(header, "off")
         else:
             test_case.assertEqual(header, value)
 
     def assert_limit_rate(self, test_case, response, value):
-        header = 'X-Accel-Limit-Rate'
+        header = "X-Accel-Limit-Rate"
         if value is None:
             test_case.assertFalse(header in response)
         elif not value:
-            test_case.assertEqual(header, 'off')
+            test_case.assertEqual(header, "off")
         else:
             test_case.assertEqual(header, value)
 
     def assert_attachment(self, test_case, response, value):
-        header = 'Content-Disposition'
+        header = "Content-Disposition"
         if value:
-            test_case.assertTrue(response[header].startswith('attachment'))
+            test_case.assertTrue(response[header].startswith("attachment"))
         else:
             test_case.assertFalse(header in response)
 

django_downloadview/response.py

@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 """:py:class:`django.http.HttpResponse` subclasses."""
-import os
+
 import mimetypes
+import os
 import re
 import unicodedata
-import six
-from six.moves import urllib
+from urllib.parse import quote
 
 from django.conf import settings
 from django.http import HttpResponse, StreamingHttpResponse
@@ -13,7 +12,7 @@ from django.utils.encoding import force_str
 
 
 def encode_basename_ascii(value):
-    u"""Return US-ASCII encoded ``value`` for Content-Disposition header.
+    """Return US-ASCII encoded ``value`` for Content-Disposition header.
 
     >>> print(encode_basename_ascii(u'éà'))
     ea
@@ -31,18 +30,18 @@ def encode_basename_ascii(value):
     ea
 
     """
-    if isinstance(value, six.binary_type):
-        value = value.decode('utf-8')
-    ascii_basename = six.text_type(value)
-    ascii_basename = unicodedata.normalize('NFKD', ascii_basename)
-    ascii_basename = ascii_basename.encode('ascii', 'ignore')
-    ascii_basename = ascii_basename.decode('ascii')
-    ascii_basename = re.sub(r'[\s]', '_', ascii_basename)
+    if isinstance(value, bytes):
+        value = value.decode("utf-8")
+    ascii_basename = str(value)
+    ascii_basename = unicodedata.normalize("NFKD", ascii_basename)
+    ascii_basename = ascii_basename.encode("ascii", "ignore")
+    ascii_basename = ascii_basename.decode("ascii")
+    ascii_basename = re.sub(r"[\s]", "_", ascii_basename)
     return ascii_basename
 
 
 def encode_basename_utf8(value):
-    u"""Return UTF-8 encoded ``value`` for use in Content-Disposition header.
+    """Return UTF-8 encoded ``value`` for use in Content-Disposition header.
 
     >>> print(encode_basename_utf8(u' .txt'))
     %20.txt
@@ -51,11 +50,11 @@ def encode_basename_utf8(value):
     %C3%A9%C3%A0
 
     """
-    return urllib.parse.quote(force_str(value))
+    return quote(force_str(value))
 
 
 def content_disposition(filename):
-    u"""Return value of ``Content-Disposition`` header with 'attachment'.
+    """Return value of ``Content-Disposition`` header with 'attachment'.
 
     >>> print(content_disposition('demo.txt'))
     attachment; filename="demo.txt"
@@ -73,15 +72,22 @@ def content_disposition(filename):
 
     """
     if not filename:
-        return 'attachment'
-    ascii_filename = encode_basename_ascii(filename)
+        return "attachment"
+    # ASCII filenames are quoted and must ensure escape sequences
+    # in the filename won't break out of the quoted header value
+    # which can permit a reflected file download attack. The UTF-8
+    # version is immune because it's not quoted.
+    ascii_filename = (
+        encode_basename_ascii(filename).replace("\\", "\\\\").replace('"', r"\"")
+    )
     utf8_filename = encode_basename_utf8(filename)
     if ascii_filename == utf8_filename:  # ASCII only.
-        return "attachment; filename=\"{ascii}\"".format(ascii=ascii_filename)
+        return f'attachment; filename="{ascii_filename}"'
     else:
-        return "attachment; filename=\"{ascii}\"; filename*=UTF-8''{utf8}" \
-               .format(ascii=ascii_filename,
-                       utf8=utf8_filename)
+        return (
+            f'attachment; filename="{ascii_filename}"; '
+            f"filename*=UTF-8''{utf8_filename}"
+        )
 
 
 class DownloadResponse(StreamingHttpResponse):
@@ -117,9 +123,17 @@ class DownloadResponse(StreamingHttpResponse):
       attributes (size, name, ...).
 
     """
-    def __init__(self, file_instance, attachment=True, basename=None,
-                 status=200, content_type=None, file_mimetype=None,
-                 file_encoding=None):
+
+    def __init__(
+        self,
+        file_instance,
+        attachment=True,
+        basename=None,
+        status=200,
+        content_type=None,
+        file_mimetype=None,
+        file_encoding=None,
+    ):
         """Constructor.
 
         :param content_type: Value for ``Content-Type`` header.
@@ -131,9 +145,9 @@ class DownloadResponse(StreamingHttpResponse):
         #: A :doc:`file wrapper instance </files>`, such as
         #: :class:`~django.core.files.base.File`.
         self.file = file_instance
-        super(DownloadResponse, self).__init__(streaming_content=self.file,
-                                               status=status,
-                                               content_type=content_type)
+        super().__init__(
+            streaming_content=self.file, status=status, content_type=content_type
+        )
 
         #: Client-side name of the file to stream.
         #: Only used if ``attachment`` is ``True``.
@@ -144,7 +158,7 @@ class DownloadResponse(StreamingHttpResponse):
         #: Affects ``Content-Disposition`` header.
         self.attachment = attachment
         if not content_type:
-            del self['Content-Type']  # Will be set later.
+            del self["Content-Type"]  # Will be set later.
 
         #: Value for file's mimetype.
         #: If ``None`` (the default), then the file's mimetype will be guessed
@@ -177,27 +191,17 @@ class DownloadResponse(StreamingHttpResponse):
             return self._default_headers
         except AttributeError:
             headers = {}
-            headers['Content-Type'] = self.get_content_type()
+            headers["Content-Type"] = self.get_content_type()
             try:
-                headers['Content-Length'] = self.file.size
+                headers["Content-Length"] = self.file.size
             except (AttributeError, NotImplementedError):
                 pass  # Generated files.
             if self.attachment:
                 basename = self.get_basename()
-                headers['Content-Disposition'] = content_disposition(basename)
+                headers["Content-Disposition"] = content_disposition(basename)
             self._default_headers = headers
             return self._default_headers
 
-    def items(self):
-        """Return iterable of (header, value).
-
-        This method is called by http handlers just before WSGI's
-        start_response() is called... but it is not called by
-        django.test.ClientHandler! :'(
-
-        """
-        return super(DownloadResponse, self).items()
-
     def get_basename(self):
         """Return basename."""
         if self.basename:
@@ -210,15 +214,13 @@ class DownloadResponse(StreamingHttpResponse):
         try:
             return self.file.content_type
         except AttributeError:
-            content_type_template = '{mime_type}; charset={charset}'
-            return content_type_template.format(mime_type=self.get_mime_type(),
-                                                charset=self.get_charset())
+            return f"{self.get_mime_type()}; charset={self.get_charset()}"
 
     def get_mime_type(self):
         """Return mime-type of the file."""
         if self.file_mimetype is not None:
             return self.file_mimetype
-        default_mime_type = 'application/octet-stream'
+        default_mime_type = "application/octet-stream"
         basename = self.get_basename()
         mime_type, encoding = mimetypes.guess_type(basename)
         return mime_type or default_mime_type

django_downloadview/shortcuts.py

@@ -1,19 +1,27 @@
-# -*- coding: utf-8 -*-
 """Port of django-sendfile in django-downloadview."""
+
 from django_downloadview.views.path import PathDownloadView
 
 
-def sendfile(request, filename, attachment=False, attachment_filename=None,
-             mimetype=None, encoding=None):
+def sendfile(
+    request,
+    filename,
+    attachment=False,
+    attachment_filename=None,
+    mimetype=None,
+    encoding=None,
+):
     """Port of django-sendfile's API in django-downloadview.
 
     Instantiates a :class:`~django_downloadview.views.path.PathDownloadView` to
     stream the file by ``filename``.
 
     """
-    view = PathDownloadView.as_view(path=filename,
-                                    attachment=attachment,
-                                    basename=attachment_filename,
-                                    mimetype=mimetype,
-                                    encoding=encoding)
+    view = PathDownloadView.as_view(
+        path=filename,
+        attachment=attachment,
+        basename=attachment_filename,
+        mimetype=mimetype,
+        encoding=encoding,
+    )
     return view(request)

django_downloadview/storage.py

@@ -0,0 +1,22 @@
+from django.core.files.storage import FileSystemStorage
+from django.core.signing import TimestampSigner
+
+
+class SignedURLMixin:
+    """
+    Mixin for generating signed file URLs with compatible storage backends.
+
+    Adds X-Signature query parameters to the normal URLs generated by the storage class.
+    """
+
+    def url(self, name):
+        path = super().url(name)
+        signer = TimestampSigner()
+        signature = signer.sign(path)
+        return "{}?X-Signature={}".format(path, signature)
+
+
+class SignedFileSystemStorage(SignedURLMixin, FileSystemStorage):
+    """
+    Specialized filesystem storage that signs file URLs for clients.
+    """

django_downloadview/test.py

@@ -1,6 +1,4 @@
-"""Testing utilities."""
 import shutil
-from six import iteritems
 import tempfile
 
 from django.conf import settings
@@ -8,8 +6,7 @@ from django.test.utils import override_settings
 from django.utils.encoding import force_bytes
 
 from django_downloadview.middlewares import is_download_response
-from django_downloadview.response import (encode_basename_ascii,
-                                          encode_basename_utf8)
+from django_downloadview.response import encode_basename_ascii, encode_basename_utf8
 
 
 def setup_view(view, request, *args, **kwargs):
@@ -68,22 +65,24 @@ class temporary_media_root(override_settings):
     True
 
     """
+
     def enable(self):
         """Create a temporary directory and use it to override
         settings.MEDIA_ROOT."""
         tmp_dir = tempfile.mkdtemp()
-        self.options['MEDIA_ROOT'] = tmp_dir
-        super(temporary_media_root, self).enable()
+        self.options["MEDIA_ROOT"] = tmp_dir
+        super().enable()
 
     def disable(self):
         """Remove directory settings.MEDIA_ROOT then restore original
         setting."""
         shutil.rmtree(settings.MEDIA_ROOT)
-        super(temporary_media_root, self).disable()
+        super().disable()
 
 
 class DownloadResponseValidator(object):
     """Utility class to validate DownloadResponse instances."""
+
     def __call__(self, test_case, response, **assertions):
         """Assert that ``response`` is a valid DownloadResponse instance.
 
@@ -103,8 +102,8 @@ class DownloadResponseValidator(object):
 
         """
         self.assert_download_response(test_case, response)
-        for key, value in iteritems(assertions):
-            assert_func = getattr(self, 'assert_%s' % key)
+        for key, value in assertions.items():
+            assert_func = getattr(self, "assert_%s" % key)
             assert_func(test_case, response, value)
 
     def assert_download_response(self, test_case, response):
@@ -118,40 +117,42 @@ class DownloadResponseValidator(object):
         check_ascii = False
         if ascii_name == utf8_name:  # Only ASCII characters.
             check_ascii = True
-            if "filename*=" in response['Content-Disposition']:
+            if "filename*=" in response["Content-Disposition"]:
                 check_utf8 = True
         else:
             check_utf8 = True
-            if "filename=" in response['Content-Disposition']:
+            if "filename=" in response["Content-Disposition"]:
                 check_ascii = True
         if check_ascii:
-            test_case.assertIn('filename="{name}"'.format(
-                name=ascii_name),
-                response['Content-Disposition'])
+            test_case.assertIn(
+                f'filename="{ascii_name}"',
+                response["Content-Disposition"],
+            )
         if check_utf8:
             test_case.assertIn(
-                "filename*=UTF-8''{name}".format(name=utf8_name),
-                response['Content-Disposition'])
+                f"filename*=UTF-8''{utf8_name}",
+                response["Content-Disposition"],
+            )
 
     def assert_content_type(self, test_case, response, value):
-        test_case.assertEqual(response['Content-Type'], value)
+        test_case.assertEqual(response["Content-Type"], value)
 
     def assert_mime_type(self, test_case, response, value):
-        test_case.assertTrue(response['Content-Type'].startswith(value))
+        test_case.assertTrue(response["Content-Type"].startswith(value))
 
     def assert_content(self, test_case, response, value):
         """Assert value equals response's content (byte comparison)."""
         parts = [force_bytes(s) for s in response.streaming_content]
-        test_case.assertEqual(b''.join(parts), force_bytes(value))
+        test_case.assertEqual(b"".join(parts), force_bytes(value))
 
     def assert_attachment(self, test_case, response, value):
         if value:
-            test_case.assertTrue(
-                'attachment;' in response['Content-Disposition'])
+            test_case.assertTrue("attachment;" in response["Content-Disposition"])
         else:
             test_case.assertTrue(
-                'Content-Disposition' not in response or
-                'attachment;' not in response['Content-Disposition'])
+                "Content-Disposition" not in response
+                or "attachment;" not in response["Content-Disposition"]
+            )
 
 
 def assert_download_response(test_case, response, **assertions):

django_downloadview/utils.py

@@ -1,9 +1,8 @@
-# -*- coding: utf-8 -*-
 """Utility functions that may be implemented in external packages."""
+
 import re
 
-
-charset_pattern = re.compile(r'charset=(?P<charset>.+)$', re.I | re.U)
+charset_pattern = re.compile(r"charset=(?P<charset>.+)$", re.I | re.U)
 
 
 def content_type_to_charset(content_type):
@@ -16,7 +15,7 @@ def content_type_to_charset(content_type):
     """
     match = re.search(charset_pattern, content_type)
     if match:
-        return match.group('charset')
+        return match.group("charset")
 
 
 def url_basename(url, content_type):
@@ -30,7 +29,7 @@ def url_basename(url, content_type):
     somefile.rst
 
     """
-    return url.split('/')[-1]
+    return url.split("/")[-1]
 
 
 def import_member(import_string):
@@ -42,6 +41,6 @@ def import_member(import_string):
     True
 
     """
-    module_name, factory_name = str(import_string).rsplit('.', 1)
+    module_name, factory_name = str(import_string).rsplit(".", 1)
     module = __import__(module_name, globals(), locals(), [factory_name], 0)
     return getattr(module, factory_name)

django_downloadview/views/__init__.py

@@ -1,12 +1,9 @@
-# coding=utf-8
-"""Views."""
-# -*- coding: utf-8 -*-
 """Views to stream files."""
+
 # API shortcuts.
-from django_downloadview.views.base import (DownloadMixin,  # NoQA
-                                            BaseDownloadView)
+from django_downloadview.views.base import BaseDownloadView, DownloadMixin  # NoQA
+from django_downloadview.views.http import HTTPDownloadView  # NoQA
+from django_downloadview.views.object import ObjectDownloadView  # NoQA
 from django_downloadview.views.path import PathDownloadView  # NoQA
 from django_downloadview.views.storage import StorageDownloadView  # NoQA
-from django_downloadview.views.object import ObjectDownloadView  # NoQA
-from django_downloadview.views.http import HTTPDownloadView  # NoQA
 from django_downloadview.views.virtual import VirtualDownloadView  # NoQA

django_downloadview/views/base.py

@@ -1,9 +1,9 @@
-# -*- coding: utf-8 -*-
 """Base material for download views: :class:`DownloadMixin` and
 :class:`BaseDownloadView`"""
+
 import calendar
 
-from django.http import HttpResponseNotModified, Http404
+from django.http import Http404, HttpResponseNotModified
 from django.views.generic.base import View
 from django.views.static import was_modified_since
 
@@ -26,6 +26,7 @@ class DownloadMixin(object):
     returned by :py:meth:`get_file`.
 
     """
+
     #: Response class, to be used in :py:meth:`render_to_response`.
     response_class = DownloadResponse
 
@@ -102,9 +103,9 @@ class DownloadMixin(object):
         Else, fallbacks to default implementation, which uses
         :py:func:`django.views.static.was_modified_since`.
 
-        Django's ``was_modified_since`` function needs a datetime and a size.
-        It is passed ``modified_time`` and ``size`` attributes from file
-        wrapper. If file wrapper does not support these attributes
+        Django's ``was_modified_since`` function needs a datetime.
+        It is passed the ``modified_time`` attribute from file
+        wrapper. If file wrapper does not support this attribute
         (``AttributeError`` or ``NotImplementedError`` is raised), then
         the file is considered as modified and ``True`` is returned.
 
@@ -114,12 +115,13 @@ class DownloadMixin(object):
         except (AttributeError, NotImplementedError):
             try:
                 modification_time = calendar.timegm(
-                    file_instance.modified_time.utctimetuple())
-                size = file_instance.size
-            except (AttributeError, NotImplementedError):
+                    file_instance.modified_time.utctimetuple()
+                )
+            except (AttributeError, NotImplementedError) as e:
+                print("!=======!", e)
                 return True
             else:
-                return was_modified_since(since, modification_time, size)
+                return was_modified_since(since, modification_time)
 
     def not_modified_response(self, *response_args, **response_kwargs):
         """Return :class:`django.http.HttpResponseNotModified` instance."""
@@ -127,11 +129,11 @@ class DownloadMixin(object):
 
     def download_response(self, *response_args, **response_kwargs):
         """Return :class:`~django_downloadview.response.DownloadResponse`."""
-        response_kwargs.setdefault('file_instance', self.file_instance)
-        response_kwargs.setdefault('attachment', self.attachment)
-        response_kwargs.setdefault('basename', self.get_basename())
-        response_kwargs.setdefault('file_mimetype', self.get_mimetype())
-        response_kwargs.setdefault('file_encoding', self.get_encoding())
+        response_kwargs.setdefault("file_instance", self.file_instance)
+        response_kwargs.setdefault("attachment", self.attachment)
+        response_kwargs.setdefault("basename", self.get_basename())
+        response_kwargs.setdefault("file_mimetype", self.get_mimetype())
+        response_kwargs.setdefault("file_encoding", self.get_encoding())
         response = self.response_class(*response_args, **response_kwargs)
         return response
 
@@ -155,7 +157,7 @@ class DownloadMixin(object):
         except exceptions.FileNotFound:
             return self.file_not_found_response()
         # Respect the If-Modified-Since header.
-        since = self.request.META.get('HTTP_IF_MODIFIED_SINCE', None)
+        since = self.request.headers.get("if-modified-since", None)
         if since is not None:
             if not self.was_modified_since(self.file_instance, since):
                 return self.not_modified_response(**response_kwargs)
@@ -165,6 +167,7 @@ class DownloadMixin(object):
 
 class BaseDownloadView(DownloadMixin, View):
     """A base :class:`DownloadMixin` that implements :meth:`get`."""
+
     def get(self, request, *args, **kwargs):
         """Handle GET requests: stream a file."""
         return self.render_to_response()

django_downloadview/views/http.py

@@ -1,15 +1,16 @@
-# -*- coding: utf-8 -*-
 """Stream files given an URL, i.e. files you want to proxy."""
-import requests
 
 from django_downloadview.files import HTTPFile
 from django_downloadview.views.base import BaseDownloadView
 
+import requests
+
 
 class HTTPDownloadView(BaseDownloadView):
     """Proxy files that live on remote servers."""
+
     #: URL to download (the one we are proxying).
-    url = u''
+    url = ""
 
     #: Additional keyword arguments for request handler.
     request_kwargs = {}
@@ -40,7 +41,9 @@ class HTTPDownloadView(BaseDownloadView):
 
     def get_file(self):
         """Return wrapper which has an ``url`` attribute."""
-        return HTTPFile(request_factory=self.get_request_factory(),
-                        name=self.get_basename(),
-                        url=self.get_url(),
-                        **self.get_request_kwargs())
+        return HTTPFile(
+            request_factory=self.get_request_factory(),
+            name=self.get_basename(),
+            url=self.get_url(),
+            **self.get_request_kwargs(),
+        )

django_downloadview/views/object.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Stream files that live in models."""
+
 from django.views.generic.detail import SingleObjectMixin
 
 from django_downloadview.exceptions import FileNotFound
@@ -31,9 +31,10 @@ class ObjectDownloadView(SingleObjectMixin, BaseDownloadView):
     local filesystem.
 
     """
+
     #: Name of the model's attribute which contains the file to be streamed.
     #: Typically the name of a FileField.
-    file_field = 'file'
+    file_field = "file"
 
     #: Optional name of the model's attribute which contains the basename.
     basename_field = None
@@ -71,13 +72,11 @@ class ObjectDownloadView(SingleObjectMixin, BaseDownloadView):
         """
         file_instance = getattr(self.object, self.file_field)
         if not file_instance:
-            raise FileNotFound('Field="{field}" on object="{object}" is '
-                               'empty'.format(
-                                   field=self.file_field,
-                                   object=self.object))
-        for field in ('encoding', 'mime_type', 'charset', 'modification_time',
-                      'size'):
-            model_field = getattr(self, '%s_field' % field, False)
+            raise FileNotFound(
+                f'Field="{self.file_field}" on object="{self.object}" is empty'
+            )
+        for field in ("encoding", "mime_type", "charset", "modification_time", "size"):
+            model_field = getattr(self, "%s_field" % field, False)
             if model_field:
                 value = getattr(self.object, model_field)
                 setattr(file_instance, field, value)
@@ -85,14 +84,14 @@ class ObjectDownloadView(SingleObjectMixin, BaseDownloadView):
 
     def get_basename(self):
         """Return client-side filename."""
-        basename = super(ObjectDownloadView, self).get_basename()
+        basename = super().get_basename()
         if basename is None:
-            field = 'basename'
-            model_field = getattr(self, '%s_field' % field, False)
+            field = "basename"
+            model_field = getattr(self, "%s_field" % field, False)
             if model_field:
                 basename = getattr(self.object, model_field)
         return basename
 
     def get(self, request, *args, **kwargs):
         self.object = self.get_object()
-        return super(ObjectDownloadView, self).get(request, *args, **kwargs)
+        return super().get(request, *args, **kwargs)

django_downloadview/views/path.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """:class:`PathDownloadView`."""
+
 import os
 
 from django.core.files import File
@@ -10,6 +10,7 @@ from django_downloadview.views.base import BaseDownloadView
 
 class PathDownloadView(BaseDownloadView):
     """Serve a file using filename."""
+
     #: Server-side name (including path) of the file to serve.
     #:
     #: Filename is supposed to be an absolute filename of a file located on the
@@ -17,7 +18,7 @@ class PathDownloadView(BaseDownloadView):
     path = None
 
     #: Name of the URL argument that contains path.
-    path_url_kwarg = 'path'
+    path_url_kwarg = "path"
 
     def get_path(self):
         """Return actual path of the file to serve.
@@ -35,5 +36,5 @@ class PathDownloadView(BaseDownloadView):
         """Use path to return wrapper around file to serve."""
         filename = self.get_path()
         if not os.path.isfile(filename):
-            raise FileNotFound('File "{0}" does not exists'.format(filename))
-        return File(open(filename, 'rb'))
+            raise FileNotFound(f'File "{filename}" does not exists')
+        return File(open(filename, "rb"))

django_downloadview/views/storage.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Stream files from storage."""
+
 from django.core.files.storage import DefaultStorage
 
 from django_downloadview.files import StorageFile
@@ -8,22 +8,13 @@ from django_downloadview.views.path import PathDownloadView
 
 class StorageDownloadView(PathDownloadView):
     """Serve a file using storage and filename."""
+
     #: Storage the file to serve belongs to.
     storage = DefaultStorage()
 
     #: Path to the file to serve relative to storage.
     path = None  # Override docstring.
 
-    def get_path(self):
-        """Return path of the file to serve, relative to storage.
-
-        Default implementation simply returns view's :py:attr:`path` attribute.
-
-        Override this method if you want custom implementation.
-
-        """
-        return super(StorageDownloadView, self).get_path()
-
     def get_file(self):
         """Return :class:`~django_downloadview.files.StorageFile` instance."""
         return StorageFile(self.storage, self.get_path())

django_downloadview/views/virtual.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Stream files that you generate or that live in memory."""
+
 from django_downloadview.views.base import BaseDownloadView
 
 
@@ -9,6 +9,7 @@ class VirtualDownloadView(BaseDownloadView):
     Override the :py:meth:`get_file` method to customize file wrapper.
 
     """
+
     def was_modified_since(self, file_instance, since):
         """Delegate to file wrapper's was_modified_since, or return True.
 

docs/about/alternatives.txt

@@ -75,6 +75,6 @@ Here are main differences between the two projects:
 .. target-notes::
 
 .. _`django.contrib.staticfiles provides a view to serve files`:
-   https://docs.djangoproject.com/en/1.9/ref/contrib/staticfiles/#static-file-development-view
+   https://docs.djangoproject.com/en/3.0/ref/contrib/staticfiles/#static-file-development-view
 .. _`Django ticket #2131`: https://code.djangoproject.com/ticket/2131
 .. _`django-sendfile`: http://pypi.python.org/pypi/django-sendfile

docs/about/vision.txt

@@ -19,8 +19,8 @@ optimizations.
 
    * :doc:`/about/alternatives`
    * `roadmap
-     <https://github.com/benoitbryon/django-downloadview/milestones>`_
+     <https://github.com/jazzband/django-downloadview/milestones>`_
 
 .. target-notes::
 
-.. _`Django`: https://djangoproject.com
+.. _`Django`: https://www.djangoproject.com

docs/conf.py

@@ -1,14 +1,14 @@
 # -*- coding: utf-8 -*-
 """django-downloadview documentation build configuration file."""
-import os
+
 import re
 
+import importlib.metadata
 
 # Minimal Django settings. Required to use sphinx.ext.autodoc, because
 # django-downloadview depends on Django...
 from django.conf import settings
 
-
 settings.configure(
     DATABASES={},  # Required to load ``django.views.generic``.
 )
@@ -18,63 +18,58 @@ settings.configure(
 
 # Extensions.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.autosummary',
-    'sphinx.ext.doctest',
-    'sphinx.ext.coverage',
-    'sphinx.ext.intersphinx',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.autosummary",
+    "sphinx.ext.doctest",
+    "sphinx.ext.coverage",
+    "sphinx.ext.intersphinx",
 ]
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # The suffix of source filenames.
-source_suffix = '.txt'
+source_suffix = ".txt"
 
 # The encoding of source files.
-source_encoding = 'utf-8'
+source_encoding = "utf-8"
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = u'django-downloadview'
-project_slug = re.sub(r'([\w_.-]+)', u'-', project)
-copyright = u'2012-2015, Benoît Bryon'
-author = u'Benoît Bryon'
-author_slug = re.sub(r'([\w_.-]+)', u'-', author)
+project = "django-downloadview"
+project_slug = re.sub(r"([\w_.-]+)", "-", project)
+copyright = "2012-2015, Benoît Bryon"
+author = "Benoît Bryon"
+author_slug = re.sub(r"([\w_.-]+)", "-", author)
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
-configuration_dir = os.path.dirname(__file__)
-documentation_dir = configuration_dir
-version_file = os.path.normpath(os.path.join(
-    documentation_dir,
-    '../VERSION'))
 
 # The full version, including alpha/beta/rc tags.
-release = open(version_file).read().strip()
+release = importlib.metadata.version("django-downloadview")
 # The short X.Y version.
-version = '.'.join(release.split('.')[0:1])
+version = ".".join(release.split(".")[:2])
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
-language = 'en'
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = ["_build"]
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 
 # -- Options for HTML output --------------------------------------------------
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'alabaster'
+html_theme = "alabaster"
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
@@ -83,23 +78,22 @@ html_static_path = []
 
 # Custom sidebar templates, maps document names to template names.
 html_sidebars = {
-    '**': ['globaltoc.html',
-           'relations.html',
-           'sourcelink.html',
-           'searchbox.html'],
+    "**": ["globaltoc.html", "relations.html", "sourcelink.html", "searchbox.html"],
 }
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = u'{project}doc'.format(project=project_slug)
+htmlhelp_basename = "{project}doc".format(project=project_slug)
 
 
 # -- Options for sphinx.ext.intersphinx ---------------------------------------
 
 intersphinx_mapping = {
-    'python': ('http://docs.python.org/2.7', None),
-    'django': ('http://docs.djangoproject.com/en/1.8/',
-               'http://docs.djangoproject.com/en/1.8/_objects/'),
-    'requests': ('http://docs.python-requests.org/en/latest/', None),
+    "python": ("https://docs.python.org/3", None),
+    "django": (
+        "https://docs.djangoproject.com/en/3.1/",
+        "https://docs.djangoproject.com/en/3.1/_objects/",
+    ),
+    "requests": ("https://requests.readthedocs.io/en/master/", None),
 }
 
 
@@ -111,11 +105,13 @@ latex_elements = {}
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).
 latex_documents = [
-    ('index',
-     u'{project}.tex'.format(project=project_slug),
-     u'{project} Documentation'.format(project=project),
-     author,
-     'manual'),
+    (
+        "index",
+        "{project}.tex".format(project=project_slug),
+        "{project} Documentation".format(project=project),
+        author,
+        "manual",
+    ),
 ]
 
 
@@ -124,11 +120,7 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index',
-     project,
-     u'{project} Documentation'.format(project=project),
-     [author],
-     1)
+    ("index", project, "{project} Documentation".format(project=project), [author], 1)
 ]
 
 
@@ -138,11 +130,13 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    ('index',
-     project_slug,
-     u'{project} Documentation'.format(project=project),
-     author,
-     project,
-     'One line description of project.',
-     'Miscellaneous'),
+    (
+        "index",
+        project_slug,
+        "{project} Documentation".format(project=project),
+        author,
+        project,
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]

docs/django-sendfile.txt

@@ -31,7 +31,7 @@ Here are tips to migrate from `django-sendfile` to `django-downloadview`...
    * setup ``DOWNLOADVIEW_RULES``. It replaces ``SENDFILE_ROOT`` and can do
      more.
    * register ``django_downloadview.SmartDownloadMiddleware`` in
-     ``MIDDLEWARE_CLASSES``.
+     ``MIDDLEWARE``.
 
 4. Change your tests if any. You can no longer use `django-senfile`'s
    ``development`` backend. See :doc:`/testing` for `django-downloadview`'s
@@ -54,4 +54,4 @@ API reference
 
 .. _`django-sendfile`: http://pypi.python.org/pypi/django-sendfile
 .. _`django-downloadview's bugtracker`:
-   https://github.com/benoitbryon/django-downloadview/issues
+   https://github.com/jazzband/django-downloadview/issues

docs/files.txt

@@ -21,7 +21,7 @@ Django's builtins
   wrapper in :doc:`/views/path`.
 
 * :class:`django.db.models.fields.files.FieldFile` wraps a file that is
-  managed in a model. ``django-downloadview`` uses this wrapper in 
+  managed in a model. ``django-downloadview`` uses this wrapper in
   :doc:`/views/object`.
 
 * :class:`django.core.files.base.ContentFile` wraps a bytes, string or
@@ -127,4 +127,4 @@ TextIteratorIO
 .. target-notes::
 
 .. _`Django itself provides some file wrappers`:
-   https://docs.djangoproject.com/en/1.9/ref/files/file/
+   https://docs.djangoproject.com/en/3.0/ref/files/file/

docs/optimizations/apache.txt

@@ -45,26 +45,26 @@ Setup XSendfile middlewares
 ***************************
 
 Make sure ``django_downloadview.SmartDownloadMiddleware`` is in
-``MIDDLEWARE_CLASSES`` of your `Django` settings.
+``MIDDLEWARE`` of your `Django` settings.
 
 Example:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 64-71
+   :lines: 63-70
 
 Then set ``django_downloadview.apache.XSendfileMiddleware`` as
 ``DOWNLOADVIEW_BACKEND``:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 77
+   :lines: 79
 
 Then register as many ``DOWNLOADVIEW_RULES`` as you wish:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 80, 85-87, 93, 103
+   :lines: 84, 92-100, 110
 
 Each item in ``DOWNLOADVIEW_RULES`` is a dictionary of keyword arguments passed
 to the middleware factory. In the example above, we capture responses by
@@ -128,4 +128,4 @@ setup.
 
 .. target-notes::
 
-.. _`Apache mod_xsendfile documentation`: https://tn123.org/mod_xsendfile/ 
+.. _`Apache mod_xsendfile documentation`: https://tn123.org/mod_xsendfile/

docs/optimizations/index.txt

@@ -87,6 +87,6 @@ Here are optimizations builtin `django_downloadview`:
 .. target-notes::
 
 .. _`tell us`:
-   https://github.com/benoitbryon/django-downloadview/issues?labels=optimizations
+   https://github.com/jazzband/django-downloadview/issues?labels=optimizations
 .. _`a feature request about "local cache" for streamed files`:
-   https://github.com/benoitbryon/django-downloadview/issues/70
+   https://github.com/jazzband/django-downloadview/issues/70

docs/optimizations/lighttpd.txt

@@ -51,26 +51,26 @@ Setup XSendfile middlewares
 ***************************
 
 Make sure ``django_downloadview.SmartDownloadMiddleware`` is in
-``MIDDLEWARE_CLASSES`` of your `Django` settings.
+``MIDDLEWARE`` of your `Django` settings.
 
 Example:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 64-71
+   :lines: 63-70
 
 Then set ``django_downloadview.lighttpd.XSendfileMiddleware`` as
 ``DOWNLOADVIEW_BACKEND``:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 78
+   :lines: 80
 
 Then register as many ``DOWNLOADVIEW_RULES`` as you wish:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 80, 94-96, 102, 103
+   :lines: 84, 101-110
 
 Each item in ``DOWNLOADVIEW_RULES`` is a dictionary of keyword arguments passed
 to the middleware factory. In the example above, we capture responses by
@@ -137,4 +137,4 @@ setup.
 .. _`Lighttpd X-Sendfile documentation`:
    http://redmine.lighttpd.net/projects/lighttpd/wiki/X-LIGHTTPD-send-file
 .. _`X-Sendfile2 feature request on django_downloadview's bugtracker`:
-   https://github.com/benoitbryon/django-downloadview/issues/67
+   https://github.com/jazzband/django-downloadview/issues/67

docs/optimizations/nginx.txt

@@ -28,7 +28,7 @@ Let's consider the following view:
 
 .. literalinclude:: /../demo/demoproject/nginx/views.py
    :language: python
-   :lines: 1-6, 8-16
+   :lines: 1-6, 8-17
 
 What is important here is that the files will have an ``url`` property
 implemented by storage. Let's setup an optimization rule based on that URL.
@@ -46,13 +46,13 @@ Setup XAccelRedirect middlewares
 ********************************
 
 Make sure ``django_downloadview.SmartDownloadMiddleware`` is in
-``MIDDLEWARE_CLASSES`` of your `Django` settings.
+``MIDDLEWARE`` of your `Django` settings.
 
 Example:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 64-71
+   :lines: 62-69
 
 Then set ``django_downloadview.nginx.XAccelRedirectMiddleware`` as
 ``DOWNLOADVIEW_BACKEND``:
@@ -65,7 +65,7 @@ Then register as many ``DOWNLOADVIEW_RULES`` as you wish:
 
 .. literalinclude:: /../demo/demoproject/settings.py
    :language: python
-   :lines: 80, 81-84, 103
+   :lines: 83-88
 
 Each item in ``DOWNLOADVIEW_RULES`` is a dictionary of keyword arguments passed
 to the middleware factory. In the example above, we capture responses by
@@ -136,13 +136,13 @@ Here is what you could have in :file:`/etc/nginx/sites-available/default`:
        # like /optimized-download/myfile.tar.gz
        #
        # See http://wiki.nginx.org/X-accel
-       # and https://django-downloadview.readthedocs.org
+       # and https://django-downloadview.readthedocs.io
        #
        location /proxied-download {
            internal;
            # Location to files on disk.
            alias /var/www/files/;
-       } 
+       }
 
        # Proxy to Django-powered frontend.
        location / {
@@ -154,7 +154,7 @@ Here is what you could have in :file:`/etc/nginx/sites-available/default`:
    }
 
 ... where specific configuration is the ``location /optimized-download``
-section.  
+section.
 
 .. note::
 
@@ -183,7 +183,7 @@ Add ``charset utf-8;`` in your nginx configuration file.
 ``open() "path/to/something" failed (2: No such file or directory)``
 ====================================================================
 
-Check your ``settings.NGINX_DOWNLOAD_MIDDLEWARE_MEDIA_ROOT`` in Django
+Check your ``settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_DIR`` in Django
 configuration VS ``alias`` in nginx configuration: in a standard configuration,
 they should be equal.
 
@@ -192,4 +192,4 @@ they should be equal.
 
 .. target-notes::
 
-.. _`Nginx X-accel documentation`: http://wiki.nginx.org/X-accel 
+.. _`Nginx X-accel documentation`: http://wiki.nginx.org/X-accel

docs/overview.txt

@@ -61,7 +61,7 @@ possible, file wrappers do not embed file data, in order to save memory.
 
 Learn more about available file wrappers in :doc:`files`.
 
-   
+
 *****************************************************************
 Middlewares convert DownloadResponse into ProxiedDownloadResponse
 *****************************************************************

docs/settings.txt

@@ -13,11 +13,11 @@ There is no need to register this application in ``INSTALLED_APPS``.
 
 
 ******************
-MIDDLEWARE_CLASSES
+MIDDLEWARE
 ******************
 
 If you plan to setup :doc:`reverse-proxy optimizations </optimizations/index>`,
-add ``django_downloadview.SmartDownloadMiddleware`` to ``MIDDLEWARE_CLASSES``.
+add ``django_downloadview.SmartDownloadMiddleware`` to ``MIDDLEWARE``.
 It is a response middleware. Move it after middlewares that compute the
 response content such as gzip middleware.
 
@@ -29,6 +29,48 @@ Example:
    :end-before: END middlewares
 
 
+********************
+DEFAULT_FILE_STORAGE
+********************
+
+django-downloadview offers a built-in signed file storage, which cryptographically
+signs requested file URLs with the Django's built-in TimeStampSigner.
+
+To utilize the signed storage views you can configure
+
+.. code:: python
+
+   DEFAULT_FILE_STORAGE='django_downloadview.storage.SignedStorage'
+
+The signed file storage system inserts a ``X-Signature`` header to the requested file
+URLs, and they can then be verified with the supplied ``signature_required`` wrapper function:
+
+.. code:: python
+
+   from django.conf.urls import url, url_patterns
+
+   from django_downloadview import ObjectDownloadView
+   from django_downloadview.decorators import signature_required
+
+   from demoproject.download.models import Document  # A model with a FileField
+
+   # ObjectDownloadView inherits from django.views.generic.BaseDetailView.
+   download = ObjectDownloadView.as_view(model=Document, file_field='file')
+
+    urlpatterns = [
+        path('download/<str:slug>/', signature_required(download)),
+    ]
+
+Make sure to test the desired functionality after configuration.
+
+***************************
+DOWNLOADVIEW_URL_EXPIRATION
+***************************
+
+Number of seconds signed download URLs are valid before expiring.
+
+Default value for this flag is None and URLs never expire.
+
 ********************
 DOWNLOADVIEW_BACKEND
 ********************
@@ -49,7 +91,7 @@ Example:
 See :doc:`/optimizations/index` for a list of available backends (middlewares).
 
 When ``django_downloadview.SmartDownloadMiddleware`` is in your
-``MIDDLEWARE_CLASSES``, this setting must be explicitely configured (no default
+``MIDDLEWARE``, this setting must be explicitely configured (no default
 value). Else, you can ignore this setting.
 
 
@@ -77,5 +119,5 @@ See :doc:`/optimizations/index` for details about builtin backends
 (middlewares) and their options.
 
 When ``django_downloadview.SmartDownloadMiddleware`` is in your
-``MIDDLEWARE_CLASSES``, this setting must be explicitely configured (no default
+``MIDDLEWARE``, this setting must be explicitely configured (no default
 value). Else, you can ignore this setting.

docs/testing.txt

@@ -41,4 +41,3 @@ Example, related to :doc:`StorageDownloadView demo </views/storage>`:
 .. literalinclude:: /../demo/demoproject/storage/tests.py
    :language: python
    :lines: 1-2, 8-12, 59-
-

docs/views/custom.txt

@@ -55,7 +55,7 @@ See details in :attr:`attachment API documentation
 
 .. literalinclude:: /../demo/demoproject/object/views.py
    :language: python
-   :lines: 1-5, 20-23
+   :lines: 1-2, 19
 
 
 ************************************
@@ -87,7 +87,7 @@ Modified" response:
    class TextDownloadView(VirtualDownloadView):
        def get_file(self):
            """Return :class:`django.core.files.base.ContentFile` object."""
-           return ContentFile(u"Hello world!", name='hello-world.txt')
+           return ContentFile("Hello world!", name='hello-world.txt')
 
        def was_modified_since(self, file_instance, since):
-           return False  # Never modified, always u"Hello world!".
+           return False  # Never modified, always "Hello world!".

docs/views/object.txt

@@ -30,7 +30,7 @@ Setup a view to stream the ``file`` attribute:
 
 .. literalinclude:: /../demo/demoproject/object/views.py
    :language: python
-   :lines: 1-5, 7
+   :lines: 1-6
 
 :class:`~django_downloadview.views.object.ObjectDownloadView` inherits from
 :class:`~django.views.generic.detail.BaseDetailView`, i.e. it expects either
@@ -38,7 +38,7 @@ Setup a view to stream the ``file`` attribute:
 
 .. literalinclude:: /../demo/demoproject/object/urls.py
    :language: python
-   :lines: 1-7, 8-10, 20
+   :lines: 1-7, 8-11, 27
 
 
 ************
@@ -69,7 +69,7 @@ Then here is the code to serve "another_file" instead of the default "file":
 
 .. literalinclude:: /../demo/demoproject/object/views.py
    :language: python
-   :lines: 1-5, 10-12
+   :lines: 1-4, 8-11
 
 
 **********************************
@@ -90,7 +90,7 @@ Then you can configure the :attr:`ObjectDownloadView.basename_field` option:
 
 .. literalinclude:: /../demo/demoproject/object/views.py
    :language: python
-   :lines: 1-5, 16-18
+   :lines: 1-4, 13-17
 
 .. note::