Re: [users@httpd] Reverse proxy: redirect variable by user

2017-02-13 Thread Markus Rathgeb
Hi Nick,

> Otherwise, it would be pretty trivial to implement as a
> custom module.

Okay, I will have a look at.
I assume that is the starting point to use:
https://httpd.apache.org/docs/2.4/developer/modguide.html

>> * Dependend on the identifier (if logged in successfull) a host and
>> port should be chossen. I assume this could be realized by a simple
>> CGI script that (e.g. look into an database) and set host and port
>> session variables. That session variables should be visible (readable
>> / writable) by the server only (mod_session_dbd?).
>
> That won't work.  A CGI request is not a Proxy request.  They are
> separate backends to the server.

What won't work?
Let's assume all but a special location (e.g. /control) is proied.
The special location is handled locally.
This location could contain the login formular and CGI scripts.
The example 
"https://httpd.apache.org/docs/2.4/mod/mod_session.html#basicexamples";
seems that it is possible to inject variables.
But I assume you would point me that the server behing the proxy
cannot inject session variables to the session handled by HTTPD.
Correct?

Best regards,
Markus

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[users@httpd] Reverse proxy: redirect variable by user

2017-02-11 Thread Markus Rathgeb
Hi,
I would like to realize an idea using the Apache HTTP Server project.
As I am a beginner at this topic, it would be great if you could give
me some help.

If my reading is correct it should be possible at all.

Short summary: It should be a reverse proxy that choose the redirect
target URL by the logged in user

* If a connection is made to the server (and the user is not logged
it), he needs to fill out a formular and give some informations
(identifier, username, password). I assume this could be realized by
"AuthType form", session, ... (perhaps database lookup using a CGI
script)

* Dependend on the identifier (if logged in successfull) a host and
port should be chossen. I assume this could be realized by a simple
CGI script that (e.g. look into an database) and set host and port
session variables. That session variables should be visible (readable
/ writable) by the server only (mod_session_dbd?).

* If the user is logged in every request should be proxied to another
web server (proxy, redirect [P]) and the host and port information
should be used for.
e.g. http://${HOST}:${PORT}/

* At least this should be work for WebSockets, too.

Do you think this is possible?
Can you help me with the configuration?

Best regards,
Markus

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