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django-jwt-expiringlinks-0.2.0-dev
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مشاهده بیشترتوضیحات
Django app that uses JWT to manage one-time and expiring links to protected URLs.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-jwt-expiringlinks-0.2.0-dev |
| نام | django-jwt-expiringlinks |
| نسخه کتابخانه | 0.2.0-dev |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Hugo Rodger-Brown |
| ایمیل نویسنده | hugo@yunojuno.com |
| آدرس صفحه اصلی | https://github.com/yunojuno/django-jwt-expiringlinks |
| آدرس اینترنتی | https://pypi.org/project/django-jwt-expiringlinks/ |
| مجوز | UNKNOWN |
django_jwt_expiringlinks
------------------------
Django app that uses JWT to manage one-time and expiring links to protected URLs.
Use Case
========
The primary use case for this app is authenticating users on a per-
request basis, without having to log in to the site first.
The canonical example of this would be unsubscribing from mailing lists -
you want to be able to identify the user, and process the request,
but requiring the user to log in first presents a barrier.
Using JWT we can 'pre-authenticate' access to the URL.
Assumptions
===========
This is not a general purpose link-generating app - it has some implicit
assumptions built-in:
* The link is being sent to a single user
* The recipient is a known Django User
* The token generated will only authenticate the initial request
* The token will *not* log the user in
* The link is not sensitive, and contains no sensitive data
Implementation
==============
The underlying technology used is JWT - see `jwt.io <https://jwt.io>`_ for more
details on the specifics. The summary is that it can be used to generate a Base64 encoded and signed token based on an arbitrary JSON payload. The signature is used to ensure that the payload has not been tampered with. The payload itself is not encrypted, and can be decoded by anyone - hence ensuring that no sensitive data is included. (NB You can encrypt the token, but the base assumption is that you're not sending sensitive data, you just want to ensure that the data you receive is the same data you sent.)
The implementation within Django consists of two parts: adding the token to a URL as it leaves the app (e.g. in an email), and then validating the token when someone clicks on the link and returns to the site.
In order to add the token, you need to create a new RequestToken object, and
then call the ``encode`` method on it. This will return the 3-part signed JWT
(header.payload.signature). You will need to initialise the token with the
recipient ``User``, and the target URL - to ensure that the token is only used
to access the intended endpoint.
..code ::python
>>> from django_jwt.models import RequestToken
>>> # create a new RequestToken, and encode the contents
>>> token = RequestToken.objects.create_token(
... user=User.objects.filter(...),
... target_url=reverse('foobar')
... ).encode()
>>> token
1234567.qwertyuiop.zxcvbnm
>>>
You now have a token that is bound to a taget URL, and an intended recipient.
If a user (any user - remmember, we are *not* authenticating the end user) clicks on this URL, they will hit the endpoint as an unauthenticated user. If the URL requires authentication, the request will fail, as the user is not yet authenticated.
.. code::python
# this will fail with a 403 as the request.user is not authenticated
@login_required
def my_view(request):
logging.debug("View is not executed")
In order to use the JWT instead of full authentication, we must add a decorator to the view function to expand out the token, verify it (against tampering, and in line with the "not before time" and "expiration time" attributes of the token payload) and then set the user.
.. code::python
@use_jwt
@login_required
def my_view(request):
logging.debug("View is executed")
The decorator does one more important task, once the function has run - it records the use of the token - extracting the source IP and user-agent from the request (for auditing purposes), and updating the token ``use_count`` property, along with the response status_code - this enables fine-grained reporting on the use of the tokens.
نحوه نصب
نصب پکیج whl django-jwt-expiringlinks-0.2.0-dev:
pip install django-jwt-expiringlinks-0.2.0-dev.whl
نصب پکیج tar.gz django-jwt-expiringlinks-0.2.0-dev:
pip install django-jwt-expiringlinks-0.2.0-dev.tar.gz