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<div class="moz-cite-prefix">On 06/04/2014 03:10 PM, Gabriel Hurley
wrote:<br>
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’ve
implemented Kerberos (via Apache) + Django once before, and
yes, taking this as pseudo-code you’re on the right track.
Obviously the devil is in the details and you’ll work out
the particulars as you go.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
most important bit (obviously) is just making absolutely
sure your REMOTE_USER header/environment variable is
trusted, but that’s outside the Django layer.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Assuming
that you can work out “with the other parameters from the
original call going into auth, session, or client as
appropriate” as you said then you should be fine.</span></p>
</div>
</blockquote>
<br>
Thanks. One part I'm not really sure about was if it is OK to skip
adding a token to the session before calling on the keystone code.
It seems like the django_openstack_auth code creates a user object
and adds that to the session. I don't want any of the login forms
from that package. I'm guessing that I would really need to write
django-openstack-kerberos-backend to merge the logic from <br>
<tt class="descname">RemoteUserBackend</tt> with
django_openstack_auth; I think I want the logic of
django_openstack_auth.backend.KeystoneBackend.authenticate<br>
<br>
<br>
<br>
<blockquote
cite="mid:ec91ab8af2d24c7196b2adc2c79213a5@CO2PR05MB732.namprd05.prod.outlook.com"
type="cite">
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">All
the best,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="margin-left:27.0pt;text-indent:-.25in;mso-list:l0
level1 lfo1">
<!--[if !supportLists]--><span
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style="mso-list:Ignore">-<span style="font:7.0pt
"Times New Roman"">
</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Gabriel<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">
Adam Young [<a class="moz-txt-link-freetext" href="mailto:ayoung@redhat.com">mailto:ayoung@redhat.com</a>]
<br>
<b>Sent:</b> Wednesday, June 04, 2014 11:53 AM<br>
<b>To:</b> OpenStack Development Mailing List<br>
<b>Subject:</b> [openstack-dev] Kerberization of
Horizon (kerbhorizon?)<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">OK, so I'm cranking on All of the
Kerberso stuff: plus S4U2Proxy work etc....except that I
have never worked with DJango directly before. I want to
get a sanity check on my approach:<br>
<br>
Instead of "authenticating" to Keystone, Horizon will use
mod_auth_krb5 and REMOTE_USER to authenticate the user.
Then, in order to get a Keystone token, the code in
openstack_dashboard/api/keystone.py:keystoneclient needs
to fetch a token for the user.
<br>
<br>
This will be done using a Kerberized Keystone and S4U2Proxy
setup. There are alternatives using TGT delegation that I
really want to have nothing to do with.<br>
<br>
The keystoneclient call currently does:<br>
<br>
<br>
conn =
api_version['client'].Client(token=user.token.id,<br>
endpoint=endpoint,<br>
original_ip=remote_addr,<br>
insecure=insecure,<br>
cacert=cacert,<br>
auth_url=endpoint,<br>
debug=settings.DEBUG)<br>
<br>
when I am done it would do:<o:p></o:p></p>
<div id="LC16">
<p class="MsoNormal"><span class="kn">from</span> <span
class="nn">keystoneclient.contrib.auth.v3</span>
<span class="kn">import</span> <span class="n">kerberos</span><o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">...<br>
<br>
if REMOTE_USER:<span class="n"><span
style="font-size:10.0pt;font-family:"Courier
New"">
</span></span><br>
<span class="n"><span
style="font-size:10.0pt;font-family:"Courier
New""> </span>
</span><span class="n">auth</span> <span class="o">=</span>
<span class="n">kerberos</span><span class="o">.</span><span
class="n">Kerberos</span><span class="p">(</span><span
class="n">OS_AUTH_URL</span><span class="p">)</span><br>
<span class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">else:</span></span><br>
<span class="n"> auth</span> <span class="o">=</span>
v3.auth.Token<span class="p">(</span>token=user.token.id<span
class="p">)</span><br>
<br>
<span class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">sess</span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">=</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">session</span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">.</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Session</span></span><span
class="p"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">(</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">kerb_auth</span></span><span
class="p"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">,</span></span><span
class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""></span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">verify</span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">=</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">OS_CACERT</span></span><span
class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">)</span></span><br>
<span class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">conn</span></span><span
class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""></span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">=</span></span><span
class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""></span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">client</span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">.</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Client</span></span><span
class="p"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">(</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">session</span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">=</span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">sess</span></span><span
class="p"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">,</span></span><span
class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""></span></span><span
class="n"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">region_name</span></span><span
class="o"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">=</span></span><span
class="s"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">'RegionOne'</span></span><span
class="p"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">)</span></span><span
class="line"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""></span></span><br>
<br>
<br>
<br>
(with the other parameters from the original call going into
auth, session. or client as appropriate)<br>
<br>
<br>
Am I on track?<br>
<br>
<br>
<o:p></o:p></p>
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