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<H1>[99s-extend] Cowboy pre request filter</H1>
<B>Mark Nijhof</B>
<A HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20Cowboy%20pre%20request%20filter&In-Reply-To=%3CCACE%3DTJqaoxrqsCSnN44s_5x4MabgWBVfaN_pecVrShnUuU-9aQ%40mail.gmail.com%3E"
TITLE="[99s-extend] Cowboy pre request filter">mark.nijhof at cre8ivethought.com
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<I>Thu Mar 6 10:52:01 CET 2014</I>
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<PRE>I also found the answer to my own question: custom middleware
I just created:
1 -module(authentication_middleware).
2
3 -behaviour(cowboy_middleware).
4
5 -export([execute/2]).
6
7 execute(Req, Env) ->
8
9 {Path, Req1} = cowboy_req:path(Req),
10
11 case Path of
12 <<"/login.html">> ->
13 {ok, Req1, Env};
14 <<"/do_login">> ->
15 {ok, Req1, Env};
16 _ ->
17 case id3as_security:is_request_authenticated(Req1) of
18 {error, eauth, Req2} ->
19 {ok, Req4} = cowboy_req:reply(303,
[{<<"Location">>, <<"/login.html">>}], "", Req2),
20 {halt, Req4};
21 {authenticated, _Id, Req2} ->
22 {ok, Req2, Env}
23 end
24 end.
And put this between the cowboy_router and cowboy_handler and life is all
good.
-Mark
On Thu, Mar 6, 2014 at 12:47 AM, Mark Nijhof <<A HREF="https://lists.ninenines.eu/listinfo/extend">mark.nijhof at cre8ivethought.com</A>
><i> wrote:
</I>
><i> Hi,
</I>><i>
</I>><i> I want to create a module that basically sits between the incoming request
</I>><i> and the http handler for that request to ensure a request is authenticated
</I>><i> (using a cookie), if the request is not authenticated then I like to
</I>><i> redirect to a specific login page (which should not be filtered).
</I>><i>
</I>><i> Is this possible with Cowboy? Should I use the onrequest hook (not sure if
</I>><i> I can force redirects from there) for that or is there a better way?
</I>><i>
</I>><i> Cheers,
</I>><i>
</I>><i> -Mark
</I>><i>
</I>><i> --
</I>><i> Mark Nijhof
</I>><i> t: @MarkNijhof <<A HREF="https://twitter.com/MarkNijhof">https://twitter.com/MarkNijhof</A>>
</I>><i> s: marknijhof
</I>><i>
</I>><i>
</I>
--
Mark Nijhof
t: @MarkNijhof <<A HREF="https://twitter.com/MarkNijhof">https://twitter.com/MarkNijhof</A>>
s: marknijhof
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