FWIW, Penn State uses Cosign for single sign-on, and I've successfully
placed Galaxy behind Cosign before (Cosign relies on Kerberos, and so
may not be a good fit at all sites).  But as Assaf says, basically
anything should work.

--nate

Duddy, John wrote:
> Thanks! That's perfect.
> 
> John Duddy
> Sr. Staff Software Engineer
> Illumina, Inc.
> 9885 Towne Centre Drive
> San Diego, CA 92121
> Tel: 858-736-3584
> E-mail: jdu...@illumina.com
> 
> -----Original Message-----
> From: Assaf Gordon [mailto:gor...@cshl.edu] 
> Sent: Monday, June 20, 2011 12:09 PM
> To: Duddy, John; galaxy-...@bx.psu.edu
> Subject: Re: [galaxy-dev] Sharing authentication between Galaxy and other 
> WSGI apps on the same web server (with custom UI)?
> 
> Hello John,
> 
> I'm not an apache expert, but I can try to help with some info.
> 
> your question involves two different issues, which are not dependent on one 
> another.
> 
> First, can one setup apache authentication that will affect both Galaxy and 
> other "things" on your server ?
> The answer is yes.
> 
> Example:
> We've setup our authentication on the root location of the server.
> Galaxy uses the prefix "/galaxy", and other services use other prefixes, and 
> since all of them are "below" the root location, the authentication applies 
> to all.
> The user needs to login only once.
> 
> ===========
> ## Root location of the server, protected with NTLM authentication
> <Location />
>      AuthName CSHL
>      AuthType NTLM
>      NTLMAuth on
>      NTLMAuthoritative on
>      ### couple of other authentication parameters...
> </Location>
> 
> ##
> ## Galaxy uses load-balancing and mod_rewrite and other things,
> ## but since it's below the root location, it will use the same authentication
> # Galaxy server
> <Proxy balancer://galaxyprod>
>             BalancerMember http://localhost:8081
>             BalancerMember http://localhost:8082
> </Proxy>
> ReWriteRule ^/galaxy$ /galaxy/ [R]
> RewriteRule ^/galaxy(.*) balancer://galaxyprod$1 [P]
> <Location "/galaxy" >
>             require valid-user
> </Location>
> 
> ##
> ## Other services on the same server will use the same authentication,
> ## and can also limit user access with "require" statement.
> Alias /plans/ "/home/gordon/projects/plans/"
> <Location "/plans">
>             require user gordon 
> </Location>
> ===========
> 
> 
> Second,
> Can apache use authentication which is not "built-in" in the browser, so 
> instead of OS native ugly dialog, the user will see a custom web page?
> The answer is still yes, because authentication in Apache is modular.
> 
> If you specify "AuthType BASIC" or "AuthType Digest" or "AuthType NTLM" 
> (which are the only universally supported built-in authentication methods I'm 
> aware of), then the client-side browser will display an OS native 
> user/password dialog.
> 
> If you install a custom authentication module, then you can use "AuthType 
> CUSTOMXXX" (or sometimes a different command) and apache will use the module 
> for custom authentication (which can involve custom webpages or anything 
> else).
> As long as the custom module notifies apache that the user is authenticated, 
> Apache doesn't care how it's done.
> 
> There's one apache module called "mod_auth_form" ( 
> http://httpd.apache.org/docs/trunk/mod/mod_auth_form.html ) which does 
> exactly that, but I'm not sure if it's considered stable.
> 
> 
> There are other 3rd party solutions available, unfortunately those solution 
> are usually quite complicated and laborious to install (I've read about them 
> but never tried them myself):
> http://blog.ianbicking.org/more-on-single-signon.html
> https://neon1.net/mod_auth_pubtkt/
> http://cosign.sourceforge.net/
> http://mod-auth-script.sourceforge.net/
> 
> All of them claim to provide apache integration.
> 
> And just as in the first question, once you change the "AuthType" in the root 
> location to a custom authentication module, all the other sub-URLs will use 
> that authentication.
> 
> If you do get one of those to work, I'm interested in hearing about it, 
> because I would like eventually to get rid of NTLM authentication.
> 
> Regards, 
>   -gordon
> 
> 
> Duddy, John wrote, On 06/20/2011 02:04 PM:
> > I'd like to have Galaxy and another application installed on the same
> > Apache server and have the user authenticate only once. I think I
> > understand how to do that by deferring authentication to Apache
> > (instead of using Galaxy's built-in database). So far, so good, I
> > think.
> > 
> > 
> > 
> > What I'm wondering is if it is possible (in external user mode) to
> > control the user experience of authentication versus being stuck with
> > the one where the browser pops up the authentication dialog. Is it
> > possible to implement a shared authentication mechanism that uses web
> > pages for the UI? Or would we have to give up Apache-based security
> > and snoop the Galaxy session cookie instead?
> > 
> > 
> > 
> > Many thanks -
> > 
> > 
> > 
> > *John Duddy Sr. Staff Software Engineer Illumina, Inc. *9885 Towne
> > Centre Drive San Diego, CA 92121 Tel: 858-736-3584 E-mail:
> > jdu...@illumina.com <mailto:jdu...@illumina.com>
> > 
> > 
> > 
> 
> 
> 
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