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%%% Copyright (c) 2014, NORDUnet A/S.
%%% See LICENSE for licensing information.
-module(catlfish_web).
-export([start/3, loop/2]).
start(Options, Module, Name) ->
lager:debug("Starting catlfish web server: ~p", [Module]),
Loop = fun (Req) ->
?MODULE:loop(Req, Module)
end,
mochiweb_http:start([{name, Name}, {loop, Loop} | Options]).
add_auth(Path, {Code, Headers, Data}) ->
AuthHeader = http_auth:create_auth("REPLY", Path, Data),
lager:debug("sent auth header: ~p", [AuthHeader]),
{Code, [{"X-Catlfish-Auth", AuthHeader} | Headers], Data}.
loop(Req, Module) ->
"/" ++ Path = Req:get(path),
try
Starttime = os:timestamp(),
AuthHeader = Req:get_header_value("X-Catlfish-Auth"),
case Req:get(method) of
'GET' ->
Query = Req:parse_qs(),
{_, RawQuery, _} = mochiweb_util:urlsplit_path(Req:get(raw_path)),
Result = case http_auth:verify_auth(AuthHeader, "GET", "/" ++ Path, RawQuery) of
failure ->
{403, [{"Content-Type", "text/plain"}], "Invalid credentials"};
success ->
lager:debug("GET ~p ~p", [Path, Query]),
add_auth("/" ++ Path, Module:request(get, Path, Query));
noauth ->
lager:debug("GET ~p ~p", [Path, Query]),
Module:request(get, Path, Query)
end,
lager:debug("GET finished: ~p us", [timer:now_diff(os:timestamp(), Starttime)]),
case Result of
none ->
Req:respond({404, [{"Content-Type", "text/plain"}], "Page not found"});
_ ->
Req:respond(Result)
end;
'POST' ->
Body = Req:recv_body(),
Result = case http_auth:verify_auth(AuthHeader, "POST", "/" ++ Path, Body) of
failure ->
{403, [{"Content-Type", "text/plain"}], "Invalid credentials"};
success ->
lager:debug("POST ~p ~p", [Path, Body]),
add_auth("/" ++ Path, Module:request(post, Path, Body));
noauth ->
lager:debug("POST ~p ~p", [Path, Body]),
Module:request(post, Path, Body)
end,
lager:debug("POST finished: ~p us", [timer:now_diff(os:timestamp(), Starttime)]),
case Result of
none ->
Req:respond({404, [{"Content-Type", "text/plain"}], "Page not found"});
_ ->
Req:respond(Result)
end;
_ ->
Req:respond({501, [], []})
end
catch
Type:What ->
[CrashFunction | Stack] = erlang:get_stacktrace(),
lager:error("Crash in ~p for path ~p: ~p ~p~n~p~n~p~n", [Module, Path, Type, What, CrashFunction, Stack]),
Req:respond({500, [{"Content-Type", "text/plain"}],
"Internal Server Error\n"})
end.
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