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From "Benjamin Bannier" <benjamin.bann...@mesosphere.io>
Subject Re: Review Request 42027: Changes HTTP responses from Unauthorized (401) to Forbidden (403).
Date Mon, 11 Jan 2016 14:02:38 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/42027/#review113755
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Looks mostly gtm. `HTTPTest.Auth` still uses `Unauthorized`; given that that part of that
test seems to just check the behavior of its own mocks it probably makes sense to remove it
completely.

- Benjamin Bannier


On Jan. 11, 2016, 2:25 p.m., Alexander Rojas wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/42027/
> -----------------------------------------------------------
> 
> (Updated Jan. 11, 2016, 2:25 p.m.)
> 
> 
> Review request for mesos, Alexander Rukletsov, Greg Mann, Joerg Schad, Jan Schlicht,
and Till Toenshoff.
> 
> 
> Bugs: MESOS-4305
>     https://issues.apache.org/jira/browse/MESOS-4305
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> It is a common patter within Mesos to return an HTTP 401 (Unauthorized) response whenever
the request is invalid for whatever reason. However, according to the [RFC-2617 Section 1.2](https://tools.ietf.org/html/rfc2617#section-1.2):
> > The 401 (Unauthorized) response message is used by an origin server  to challenge
the authorization of a user agent. This response MUST include a WWW-Authenticate header field
containing at least one challenge applicable to the requested resource.
> 
> Meaning that despite the confusing name, the status code _401 Unauthorized_ should be
used only for authentication purposes. On the other hand, the [RFC-2616 Section 10.4.4](http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.4)
states:
> > _(403 Forbidden is returned when)_ The server understood the request, but is refusing
to fulfill it. Authorization will not help and the request SHOULD NOT be repeated. If the
request method was not HEAD and the server wishes to make public why the request has not been
fulfilled, it SHOULD describe the reason for the refusal in the entity. If the server does
not wish to make this information available to the client, the status code 404 (Not Found)
can be used instead.
> 
> As such, _403 (Forbidden)_ seems to be a better return code when replying inside endpoint
handlers, while _401 (Unauthorized)_ should be left to the HTTP Authenticators only.
> 
> 
> Diffs
> -----
> 
>   docs/authorization.md a928f1722dc67cd791d78ebbe4591f2e8f2e8f2a 
>   src/master/http.cpp bcafc7aff89659a68352f3876ce6042f8b34bd5d 
>   src/master/quota_handler.cpp 134a93b1d1b6e050aa8a5037ffbec2cc305b0694 
>   src/tests/master_quota_tests.cpp 776a168254af6fa8a5d87d4580b35d83f2d5909a 
>   src/tests/persistent_volume_endpoints_tests.cpp f0cce190abc90f0fae84d6c3db20e8215c2d8132

>   src/tests/reservation_endpoints_tests.cpp b8edd6fafedd4c2221a8d19c1ebc71254071a8c7

>   src/tests/scheduler_http_api_tests.cpp 4d23a5a8368e0ed126469fa4a90a889b339ad004 
>   src/tests/teardown_tests.cpp 97cc89ba168aefff8512f6d1a25c4f7ddf180bae 
> 
> Diff: https://reviews.apache.org/r/42027/diff/
> 
> 
> Testing
> -------
> 
> make check
> 
> 
> Thanks,
> 
> Alexander Rojas
> 
>


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