# send all requests to the `/validate` endpoint for authorization
auth_request /validate;

location = /validate {    
    # be sure to pass the original host header
    proxy_set_header Host $http_host;

    # Vouch Proxy only acts on the request headers
    proxy_pass_request_body off;
    proxy_set_header Content-Length "";

    # optionally add X-Vouch-User as returned by Vouch Proxy along with the request
    auth_request_set $auth_resp_x_vouch_user $upstream_http_x_vouch_user;

    # these return values are used by the @error401 call
    auth_request_set $auth_resp_jwt $upstream_http_x_vouch_jwt;
    auth_request_set $auth_resp_err $upstream_http_x_vouch_err;
    auth_request_set $auth_resp_failcount $upstream_http_x_vouch_failcount;

    proxy_pass https://validate.vouch.armos.zinomedia.de:443;
}

# if validate returns `401 not authorized` then forward the request to the error401block
error_page 401 = @error401;

location @error401 {
    # redirect to Vouch Proxy for login
    return 302 https://vouch.armos.zinomedia.de/login?url=$scheme://$http_host$request_uri&vouch-failcount=$auth_resp_failcount&X-Vouch-Token=$auth_resp_jwt&error=$auth_resp_err;
}