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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2015-2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+-module(httpd_custom).
+
+-export([response_header/1, request_header/1, response_default_headers/0]).
+-export([customize_headers/3, response_default_headers/1]).
+
+-include("../inets_app/inets_internal.hrl").
+
+-behaviour(httpd_custom_api).
+
+%%--------------------------------------------------------------------
+%% Behavior API -----------------------------------
+%%--------------------------------------------------------------------
+
+response_header(Header) ->
+ {true, httpify(Header)}.
+request_header(Header) ->
+ {true, Header}.
+response_default_headers() ->
+ [].
+
+%%--------------------------------------------------------------------
+%% Internal API -----------------------------------
+%%--------------------------------------------------------------------
+customize_headers(?MODULE, Function, Arg) ->
+ ?MODULE:Function(Arg);
+customize_headers(Module, Function, Arg) ->
+ try Module:Function(Arg) of
+ {true, Value} ->
+ ?MODULE:Function(Value);
+ false ->
+ false
+ catch
+ _:_ ->
+ ?MODULE:Function(Arg)
+ end.
+
+response_default_headers(?MODULE) ->
+ response_default_headers();
+response_default_headers(Module) ->
+ try Module:response_default_headers() of
+ Defaults ->
+ [{http_util:to_lower(Key), Value} || {Key, Value} <- Defaults,
+ is_list(Key), is_list(Value)]
+ catch
+ _:_ ->
+ ?MODULE:response_default_headers()
+ end.
+%%--------------------------------------------------------------------
+%% Internal functions -----------------------------------
+%%--------------------------------------------------------------------
+httpify({Key0, Value}) ->
+ %% make sure first letter is capital (defacto standard)
+ Words1 = string:tokens(Key0, "-"),
+ Words2 = upify(Words1, []),
+ Key = new_key(Words2),
+ Key ++ ": " ++ Value ++ ?CRLF .
+
+new_key([]) ->
+ "";
+new_key([W]) ->
+ W;
+new_key([W1,W2]) ->
+ W1 ++ "-" ++ W2;
+new_key([W|R]) ->
+ W ++ "-" ++ new_key(R).
+
+upify([], Acc) ->
+ lists:reverse(Acc);
+upify([Key|Rest], Acc) ->
+ upify(Rest, [upify2(Key)|Acc]).
+
+upify2([C|Rest]) when (C >= $a) andalso (C =< $z) ->
+ [C-($a-$A)|Rest];
+upify2(Str) ->
+ Str.