[99s-extend] Cowboy pre request filter

[Mark Nijhof]

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 <mark.nijhof at cre8ivethought.com
> wrote:

> Hi,
>
> I want to create a module that basically sits between the incoming request
> and the http handler for that request to ensure a request is authenticated
> (using a cookie), if the request is not authenticated then I like to
> redirect to a specific login page (which should not be filtered).
>
> Is this possible with Cowboy? Should I use the onrequest hook (not sure if
> I can force redirects from there) for that or is there a better way?
>
> Cheers,
>
> -Mark
>
> --
> Mark Nijhof
> t:   @MarkNijhof <https://twitter.com/MarkNijhof>
> s:  marknijhof
>
>


-- 
Mark Nijhof
t:   @MarkNijhof <https://twitter.com/MarkNijhof>
s:  marknijhof
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