diff options
Diffstat (limited to 'src/cowboy_http.erl')
| -rw-r--r-- | src/cowboy_http.erl | 110 |
1 files changed, 83 insertions, 27 deletions
diff --git a/src/cowboy_http.erl b/src/cowboy_http.erl index 6d14961..6454521 100644 --- a/src/cowboy_http.erl +++ b/src/cowboy_http.erl @@ -1,4 +1,5 @@ %% Copyright (c) 2011, Loïc Hoguin <[email protected]> +%% Copyright (c) 2011, Anthony Ramine <[email protected]> %% %% Permission to use, copy, modify, and/or distribute this software for any %% purpose with or without fee is hereby granted, provided that the above @@ -16,7 +17,7 @@ -module(cowboy_http). %% Parsing. --export([list/2, nonempty_list/2, +-export([list/2, nonempty_list/2, content_type/1, media_range/2, conneg/2, language_range/2, entity_tag_match/1, http_date/1, rfc1123_date/1, rfc850_date/1, asctime_date/1, digits/1, token/2, token_ci/2, quoted_string/2]). @@ -66,16 +67,47 @@ list(Data, Fun, Acc) -> end) end). +%% @doc Parse a content type. +-spec content_type(binary()) -> any(). +content_type(Data) -> + media_type(Data, + fun (Rest, Type, SubType) -> + content_type_params(Rest, + fun (Params) -> {Type, SubType, Params} end, []) + end). + +-spec content_type_params(binary(), fun(), list({binary(), binary()})) + -> any(). +content_type_params(Data, Fun, Acc) -> + whitespace(Data, + fun (<< $;, Rest/bits >>) -> content_type_param(Rest, Fun, Acc); + (<<>>) -> Fun(lists:reverse(Acc)); + (_Rest) -> {error, badarg} + end). + +-spec content_type_param(binary(), fun(), list({binary(), binary()})) + -> any(). +content_type_param(Data, Fun, Acc) -> + whitespace(Data, + fun (Rest) -> + token_ci(Rest, + fun (_Rest2, <<>>) -> {error, badarg}; + (<< $=, Rest2/bits >>, Attr) -> + word(Rest2, + fun (Rest3, Value) -> + content_type_params(Rest3, Fun, + [{Attr, Value}|Acc]) + end); + (_Rest2, _Attr) -> {error, badarg} + end) + end). + %% @doc Parse a media range. -spec media_range(binary(), fun()) -> any(). media_range(Data, Fun) -> - token_ci(Data, - fun (_Rest, <<>>) -> {error, badarg}; - (<< $/, Rest/bits >>, Type) -> token_ci(Rest, - fun (_Rest2, <<>>) -> {error, badarg}; - (Rest2, SubType) -> - media_range_params(Rest2, Fun, Type, SubType, []) - end) + media_type(Data, + fun (Rest, Type, SubType) -> + media_range_params(Rest, Fun, Type, SubType, []) end). -spec media_range_params(binary(), fun(), binary(), binary(), @@ -106,19 +138,24 @@ media_range_param_value(Data, Fun, Type, SubType, Acc, <<"q">>) -> fun (Rest, Quality) -> accept_ext(Rest, Fun, Type, SubType, Acc, Quality, []) end); -media_range_param_value(Data = << $", _/bits >>, Fun, - Type, SubType, Acc, Attr) -> - quoted_string(Data, +media_range_param_value(Data, Fun, Type, SubType, Acc, Attr) -> + word(Data, fun (Rest, Value) -> media_range_params(Rest, Fun, Type, SubType, [{Attr, Value}|Acc]) - end); -media_range_param_value(Data, Fun, Type, SubType, Acc, Attr) -> - token(Data, + end). + +%% @doc Parse a media type. +-spec media_type(binary(), fun()) -> any(). +media_type(Data, Fun) -> + token_ci(Data, fun (_Rest, <<>>) -> {error, badarg}; - (Rest, Value) -> - media_range_params(Rest, Fun, - Type, SubType, [{Attr, Value}|Acc]) + (<< $/, Rest/bits >>, Type) -> + token_ci(Rest, + fun (_Rest2, <<>>) -> {error, badarg}; + (Rest2, SubType) -> Fun(Rest2, Type, SubType) + end); + (_Rest, _Type) -> {error, badarg} end). -spec accept_ext(binary(), fun(), binary(), binary(), @@ -154,17 +191,9 @@ accept_ext_attr(Data, Fun, Type, SubType, Params, Quality, Acc) -> -spec accept_ext_value(binary(), fun(), binary(), binary(), [{binary(), binary()}], 0..1000, [{binary(), binary()} | binary()], binary()) -> any(). -accept_ext_value(Data = << $", _/bits >>, Fun, - Type, SubType, Params, Quality, Acc, Attr) -> - quoted_string(Data, - fun (Rest, Value) -> - accept_ext(Rest, Fun, - Type, SubType, Params, Quality, [{Attr, Value}|Acc]) - end); accept_ext_value(Data, Fun, Type, SubType, Params, Quality, Acc, Attr) -> - token(Data, - fun (_Rest, <<>>) -> {error, badarg}; - (Rest, Value) -> + word(Data, + fun (Rest, Value) -> accept_ext(Rest, Fun, Type, SubType, Params, Quality, [{Attr, Value}|Acc]) end). @@ -543,6 +572,16 @@ alpha(<< C, Rest/bits >>, Fun, Acc) alpha(Data, Fun, Acc) -> Fun(Data, Acc). +%% @doc Parse either a token or a quoted string. +-spec word(binary(), fun()) -> any(). +word(Data = << $", _/bits >>, Fun) -> + quoted_string(Data, Fun); +word(Data, Fun) -> + token(Data, + fun (_Rest, <<>>) -> {error, badarg}; + (Rest, Token) -> Fun(Rest, Token) + end). + %% @doc Parse a case-insensitive token. %% %% Changes all characters to lowercase. @@ -769,6 +808,23 @@ connection_to_atom_test_() -> [{lists:flatten(io_lib:format("~p", [T])), fun() -> R = connection_to_atom(T) end} || {T, R} <- Tests]. +content_type_test_() -> + %% {ContentType, Result} + Tests = [ + {<<"text/plain; charset=iso-8859-4">>, + {<<"text">>, <<"plain">>, [{<<"charset">>, <<"iso-8859-4">>}]}}, + {<<"multipart/form-data \t;Boundary=\"MultipartIsUgly\"">>, + {<<"multipart">>, <<"form-data">>, [ + {<<"boundary">>, <<"MultipartIsUgly">>} + ]}}, + {<<"foo/bar; one=FirstParam; two=SecondParam">>, + {<<"foo">>, <<"bar">>, [ + {<<"one">>, <<"FirstParam">>}, + {<<"two">>, <<"SecondParam">>} + ]}} + ], + [{V, fun () -> R = content_type(V) end} || {V, R} <- Tests]. + digits_test_() -> %% {Digits, Result} Tests = [ |