From fad5c0049df278cc498b6cdb519b09e845a070a8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= Date: Wed, 21 Aug 2013 20:40:02 +0200 Subject: Initial commit with most of spdy/3 --- src/cow_spdy.erl | 264 +++++++++++++++++++++++++++++++++++++++++++++++++++++ src/cow_spdy.hrl | 181 ++++++++++++++++++++++++++++++++++++ src/cowlib.app.src | 24 +++++ 3 files changed, 469 insertions(+) create mode 100644 src/cow_spdy.erl create mode 100644 src/cow_spdy.hrl create mode 100644 src/cowlib.app.src (limited to 'src') diff --git a/src/cow_spdy.erl b/src/cow_spdy.erl new file mode 100644 index 0000000..4856afd --- /dev/null +++ b/src/cow_spdy.erl @@ -0,0 +1,264 @@ +%% Copyright (c) 2013, Loïc Hoguin +%% +%% Permission to use, copy, modify, and/or distribute this software for any +%% purpose with or without fee is hereby granted, provided that the above +%% copyright notice and this permission notice appear in all copies. +%% +%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +-module(cow_spdy). + +%% Zstream. +-export([deflate_init/0]). +-export([inflate_init/0]). + +%% Parse. +-export([split/1]). +-export([parse/2]). + +%% Build. +-export([data/3]). +-export([syn_stream/12]). +-export([syn_reply/6]). +-export([rst_stream/2]). +%% @todo settings +-export([ping/1]). +-export([goaway/2]). +%% @todo headers +%% @todo window_update + +-include("cow_spdy.hrl"). + +%% Zstream. + +deflate_init() -> + Zdef = zlib:open(), + ok = zlib:deflateInit(Zdef), + _ = zlib:deflateSetDictionary(Zdef, ?ZDICT), + Zdef. + +inflate_init() -> + Zinf = zlib:open(), + ok = zlib:inflateInit(Zinf), + Zinf. + +%% Parse. + +split(Data = << _:40, Length:24, _/bits >>) + when byte_size(Data) >= Length + 8 -> + Length2 = Length + 8, + << Frame:Length2/binary, Rest/bits >> = Data, + {true, Frame, Rest}; +split(Data) -> + {false, Data}. + +parse(<< 0:1, StreamID:31, 0:7, IsFinFlag:1, _:24, Data/bits >>, _) -> + {data, StreamID, from_flag(IsFinFlag), Data}; +parse(<< 1:1, 3:15, 1:16, 0:6, IsUnidirectionalFlag:1, IsFinFlag:1, + _:25, StreamID:31, _:1, AssocToStreamID:31, Priority:3, _:5, + 0:8, Rest/bits >>, Zinf) -> + case parse_headers(Rest, Zinf) of + {ok, Headers, [{<<":host">>, Host}, {<<":method">>, Method}, + {<<":path">>, Path}, {<<":scheme">>, Scheme}, + {<<":version">>, Version}]} -> + {syn_stream, StreamID, AssocToStreamID, from_flag(IsFinFlag), + from_flag(IsUnidirectionalFlag), Priority, Method, + Scheme, Host, Path, Version, Headers}; + _ -> + {error, badprotocol} + end; +parse(<< 1:1, 3:15, 2:16, 0:7, IsFinFlag:1, _:25, + StreamID:31, Rest/bits >>, Zinf) -> + case parse_headers(Rest, Zinf) of + {ok, Headers, [{<<":status">>, Status}, {<<":version">>, Version}]} -> + {syn_reply, StreamID, from_flag(IsFinFlag), + Status, Version, Headers}; + _ -> + {error, badprotocol} + end; +parse(<< 1:1, 3:15, 3:16, 0:8, _:56, StatusCode:32 >>, _) + when StatusCode =:= 0; StatusCode > 11 -> + {error, badprotocol}; +parse(<< 1:1, 3:15, 3:16, 0:8, _:25, StreamID:31, StatusCode:32 >>, _) -> + Status = case StatusCode of + 1 -> protocol_error; + 2 -> invalid_stream; + 3 -> refused_stream; + 4 -> unsupported_version; + 5 -> cancel; + 6 -> internal_error; + 7 -> flow_control_error; + 8 -> stream_in_use; + 9 -> stream_already_closed; + 10 -> invalid_credentials; + 11 -> frame_too_large + end, + {rst_stream, StreamID, Status}; +parse(<< 1:1, 3:15, 4:16, 0:7, ClearSettingsFlag:1, _:24, + NbEntries:32, Rest/bits >>, _) -> + try + Settings = [begin + Is0 = 0, + Key = case ID of + 1 -> upload_bandwidth; + 2 -> download_bandwidth; + 3 -> round_trip_time; + 4 -> max_concurrent_streams; + 5 -> current_cwnd; + 6 -> download_retrans_rate; + 7 -> initial_window_size; + 8 -> client_certificate_vector_size + end, + {Key, Value, from_flag(PersistFlag), from_flag(WasPersistedFlag)} + end || << Is0:6, WasPersistedFlag:1, PersistFlag:1, + ID:24, Value:32 >> <= Rest], + NbEntries = length(Settings), + {settings, from_flag(ClearSettingsFlag), Settings} + catch _:_ -> + {error, badprotocol} + end; +parse(<< 1:1, 3:15, 6:16, 0:8, _:24, PingID:32 >>, _) -> + {ping, PingID}; +parse(<< 1:1, 3:15, 7:16, 0:8, _:56, StatusCode:32 >>, _) + when StatusCode > 2 -> + {error, badprotocol}; +parse(<< 1:1, 3:15, 7:16, 0:8, _:25, LastGoodStreamID:31, + StatusCode:32 >>, _) -> + Status = case StatusCode of + 0 -> ok; + 1 -> protocol_error; + 2 -> internal_error + end, + {goaway, LastGoodStreamID, Status}; +parse(<< 1:1, 3:15, 8:16, 0:7, IsFinFlag:1, _:25, StreamID:31, + Rest/bits >>, Zinf) -> + case parse_headers(Rest, Zinf) of + {ok, Headers, []} -> + {headers, StreamID, from_flag(IsFinFlag), Headers}; + _ -> + {error, badprotocol} + end; +parse(<< 1:1, 3:15, 9:16, 0:8, _:57, 0:31 >>, _) -> + {error, badprotocol}; +parse(<< 1:1, 3:15, 9:16, 0:8, _:25, StreamID:31, + _:1, DeltaWindowSize:31 >>, _) -> + {window_update, StreamID, DeltaWindowSize}; +parse(_, _) -> + {error, badprotocol}. + +parse_headers(Data, Zinf) -> + [<< NbHeaders:32, Rest/bits >>] = inflate(Zinf, Data), + parse_headers(Rest, NbHeaders, [], []). + +parse_headers(<<>>, 0, Headers, SpHeaders) -> + {ok, lists:reverse(Headers), lists:sort(SpHeaders)}; +parse_headers(<<>>, _, _, _) -> + error; +parse_headers(_, 0, _, _) -> + error; +parse_headers(<< 0:32, _/bits >>, _, _, _) -> + error; +parse_headers(<< L1:32, Key:L1/binary, L2:32, Value:L2/binary, Rest/bits >>, + NbHeaders, Acc, SpAcc) -> + case Key of + << $:, _/bits >> -> + parse_headers(Rest, NbHeaders - 1, Acc, [{Key, Value}|SpAcc]); + _ -> + parse_headers(Rest, NbHeaders - 1, [{Key, Value}|Acc], SpAcc) + end. + +inflate(Zinf, Data) -> + try + zlib:inflate(Zinf, Data) + catch _:_ -> + ok = zlib:inflateSetDictionary(Zinf, ?ZDICT), + zlib:inflate(Zinf, <<>>) + end. + +from_flag(0) -> false; +from_flag(1) -> true. + +%% Build. + +data(StreamID, IsFin, Data) -> + IsFinFlag = to_flag(IsFin), + Length = iolist_size(Data), + [<< 0:1, StreamID:31, 0:7, IsFinFlag:1, Length:24 >>, Data]. + +syn_stream(Zdef, StreamID, AssocToStreamID, IsFin, IsUnidirectional, + Priority, Method, Scheme, Host, Path, Version, Headers) -> + IsFinFlag = to_flag(IsFin), + IsUnidirectionalFlag = to_flag(IsUnidirectional), + HeaderBlock = build_headers(Zdef, [ + {<<":method">>, Method}, + {<<":scheme">>, Scheme}, + {<<":host">>, Host}, + {<<":path">>, Path}, + {<<":version">>, Version} + |Headers]), + Length = 10 + iolist_size(HeaderBlock), + [<< 1:1, 3:15, 1:16, 0:6, IsUnidirectionalFlag:1, IsFinFlag:1, + Length:24, 0:1, StreamID:31, 0:1, AssocToStreamID:31, + Priority:3, 0:5, 0:8 >>, HeaderBlock]. + +syn_reply(Zdef, StreamID, IsFin, Status, Version, Headers) -> + IsFinFlag = to_flag(IsFin), + HeaderBlock = build_headers(Zdef, [ + {<<":status">>, Status}, + {<<":version">>, Version} + |Headers]), + Length = 4 + iolist_size(HeaderBlock), + [<< 1:1, 3:15, 2:16, 0:7, IsFinFlag:1, Length:24, + 0:1, StreamID:31 >>, HeaderBlock]. + +rst_stream(StreamID, Status) -> + StatusCode = case Status of + protocol_error -> 1; + invalid_stream -> 2; + refused_stream -> 3; + unsupported_version -> 4; + cancel -> 5; + internal_error -> 6; + flow_control_error -> 7; + stream_in_use -> 8; + stream_already_closed -> 9; + invalid_credentials -> 10; + frame_too_large -> 11 + end, + << 1:1, 3:15, 3:16, 0:8, 8:24, + 0:1, StreamID:31, StatusCode:32 >>. + +%% @todo settings + +ping(PingID) -> + << 1:1, 3:15, 6:16, 0:8, 4:24, PingID:32 >>. + +goaway(LastGoodStreamID, Status) -> + StatusCode = case Status of + ok -> 0; + protocol_error -> 1; + internal_error -> 2 + end, + << 1:1, 3:15, 7:16, 0:8, 8:24, + 0:1, LastGoodStreamID:31, StatusCode:32 >>. + +%% @todo headers +%% @todo window_update + +build_headers(Zdef, Headers) -> + NbHeaders = length(Headers), + Headers2 = [begin + L1 = iolist_size(Key), + L2 = iolist_size(Value), + [<< L1:32 >>, Key, << L2:32 >>, Value] + end || {Key, Value} <- Headers], + zlib:deflate(Zdef, [<< NbHeaders:32 >>, Headers2], full). + +to_flag(false) -> 0; +to_flag(true) -> 1. diff --git a/src/cow_spdy.hrl b/src/cow_spdy.hrl new file mode 100644 index 0000000..9637b1c --- /dev/null +++ b/src/cow_spdy.hrl @@ -0,0 +1,181 @@ +%% Zlib dictionary. + +-define(ZDICT, << + 16#00, 16#00, 16#00, 16#07, 16#6f, 16#70, 16#74, 16#69, + 16#6f, 16#6e, 16#73, 16#00, 16#00, 16#00, 16#04, 16#68, + 16#65, 16#61, 16#64, 16#00, 16#00, 16#00, 16#04, 16#70, + 16#6f, 16#73, 16#74, 16#00, 16#00, 16#00, 16#03, 16#70, + 16#75, 16#74, 16#00, 16#00, 16#00, 16#06, 16#64, 16#65, + 16#6c, 16#65, 16#74, 16#65, 16#00, 16#00, 16#00, 16#05, + 16#74, 16#72, 16#61, 16#63, 16#65, 16#00, 16#00, 16#00, + 16#06, 16#61, 16#63, 16#63, 16#65, 16#70, 16#74, 16#00, + 16#00, 16#00, 16#0e, 16#61, 16#63, 16#63, 16#65, 16#70, + 16#74, 16#2d, 16#63, 16#68, 16#61, 16#72, 16#73, 16#65, + 16#74, 16#00, 16#00, 16#00, 16#0f, 16#61, 16#63, 16#63, + 16#65, 16#70, 16#74, 16#2d, 16#65, 16#6e, 16#63, 16#6f, + 16#64, 16#69, 16#6e, 16#67, 16#00, 16#00, 16#00, 16#0f, + 16#61, 16#63, 16#63, 16#65, 16#70, 16#74, 16#2d, 16#6c, + 16#61, 16#6e, 16#67, 16#75, 16#61, 16#67, 16#65, 16#00, + 16#00, 16#00, 16#0d, 16#61, 16#63, 16#63, 16#65, 16#70, + 16#74, 16#2d, 16#72, 16#61, 16#6e, 16#67, 16#65, 16#73, + 16#00, 16#00, 16#00, 16#03, 16#61, 16#67, 16#65, 16#00, + 16#00, 16#00, 16#05, 16#61, 16#6c, 16#6c, 16#6f, 16#77, + 16#00, 16#00, 16#00, 16#0d, 16#61, 16#75, 16#74, 16#68, + 16#6f, 16#72, 16#69, 16#7a, 16#61, 16#74, 16#69, 16#6f, + 16#6e, 16#00, 16#00, 16#00, 16#0d, 16#63, 16#61, 16#63, + 16#68, 16#65, 16#2d, 16#63, 16#6f, 16#6e, 16#74, 16#72, + 16#6f, 16#6c, 16#00, 16#00, 16#00, 16#0a, 16#63, 16#6f, + 16#6e, 16#6e, 16#65, 16#63, 16#74, 16#69, 16#6f, 16#6e, + 16#00, 16#00, 16#00, 16#0c, 16#63, 16#6f, 16#6e, 16#74, + 16#65, 16#6e, 16#74, 16#2d, 16#62, 16#61, 16#73, 16#65, + 16#00, 16#00, 16#00, 16#10, 16#63, 16#6f, 16#6e, 16#74, + 16#65, 16#6e, 16#74, 16#2d, 16#65, 16#6e, 16#63, 16#6f, + 16#64, 16#69, 16#6e, 16#67, 16#00, 16#00, 16#00, 16#10, + 16#63, 16#6f, 16#6e, 16#74, 16#65, 16#6e, 16#74, 16#2d, + 16#6c, 16#61, 16#6e, 16#67, 16#75, 16#61, 16#67, 16#65, + 16#00, 16#00, 16#00, 16#0e, 16#63, 16#6f, 16#6e, 16#74, + 16#65, 16#6e, 16#74, 16#2d, 16#6c, 16#65, 16#6e, 16#67, + 16#74, 16#68, 16#00, 16#00, 16#00, 16#10, 16#63, 16#6f, + 16#6e, 16#74, 16#65, 16#6e, 16#74, 16#2d, 16#6c, 16#6f, + 16#63, 16#61, 16#74, 16#69, 16#6f, 16#6e, 16#00, 16#00, + 16#00, 16#0b, 16#63, 16#6f, 16#6e, 16#74, 16#65, 16#6e, + 16#74, 16#2d, 16#6d, 16#64, 16#35, 16#00, 16#00, 16#00, + 16#0d, 16#63, 16#6f, 16#6e, 16#74, 16#65, 16#6e, 16#74, + 16#2d, 16#72, 16#61, 16#6e, 16#67, 16#65, 16#00, 16#00, + 16#00, 16#0c, 16#63, 16#6f, 16#6e, 16#74, 16#65, 16#6e, + 16#74, 16#2d, 16#74, 16#79, 16#70, 16#65, 16#00, 16#00, + 16#00, 16#04, 16#64, 16#61, 16#74, 16#65, 16#00, 16#00, + 16#00, 16#04, 16#65, 16#74, 16#61, 16#67, 16#00, 16#00, + 16#00, 16#06, 16#65, 16#78, 16#70, 16#65, 16#63, 16#74, + 16#00, 16#00, 16#00, 16#07, 16#65, 16#78, 16#70, 16#69, + 16#72, 16#65, 16#73, 16#00, 16#00, 16#00, 16#04, 16#66, + 16#72, 16#6f, 16#6d, 16#00, 16#00, 16#00, 16#04, 16#68, + 16#6f, 16#73, 16#74, 16#00, 16#00, 16#00, 16#08, 16#69, + 16#66, 16#2d, 16#6d, 16#61, 16#74, 16#63, 16#68, 16#00, + 16#00, 16#00, 16#11, 16#69, 16#66, 16#2d, 16#6d, 16#6f, + 16#64, 16#69, 16#66, 16#69, 16#65, 16#64, 16#2d, 16#73, + 16#69, 16#6e, 16#63, 16#65, 16#00, 16#00, 16#00, 16#0d, + 16#69, 16#66, 16#2d, 16#6e, 16#6f, 16#6e, 16#65, 16#2d, + 16#6d, 16#61, 16#74, 16#63, 16#68, 16#00, 16#00, 16#00, + 16#08, 16#69, 16#66, 16#2d, 16#72, 16#61, 16#6e, 16#67, + 16#65, 16#00, 16#00, 16#00, 16#13, 16#69, 16#66, 16#2d, + 16#75, 16#6e, 16#6d, 16#6f, 16#64, 16#69, 16#66, 16#69, + 16#65, 16#64, 16#2d, 16#73, 16#69, 16#6e, 16#63, 16#65, + 16#00, 16#00, 16#00, 16#0d, 16#6c, 16#61, 16#73, 16#74, + 16#2d, 16#6d, 16#6f, 16#64, 16#69, 16#66, 16#69, 16#65, + 16#64, 16#00, 16#00, 16#00, 16#08, 16#6c, 16#6f, 16#63, + 16#61, 16#74, 16#69, 16#6f, 16#6e, 16#00, 16#00, 16#00, + 16#0c, 16#6d, 16#61, 16#78, 16#2d, 16#66, 16#6f, 16#72, + 16#77, 16#61, 16#72, 16#64, 16#73, 16#00, 16#00, 16#00, + 16#06, 16#70, 16#72, 16#61, 16#67, 16#6d, 16#61, 16#00, + 16#00, 16#00, 16#12, 16#70, 16#72, 16#6f, 16#78, 16#79, + 16#2d, 16#61, 16#75, 16#74, 16#68, 16#65, 16#6e, 16#74, + 16#69, 16#63, 16#61, 16#74, 16#65, 16#00, 16#00, 16#00, + 16#13, 16#70, 16#72, 16#6f, 16#78, 16#79, 16#2d, 16#61, + 16#75, 16#74, 16#68, 16#6f, 16#72, 16#69, 16#7a, 16#61, + 16#74, 16#69, 16#6f, 16#6e, 16#00, 16#00, 16#00, 16#05, + 16#72, 16#61, 16#6e, 16#67, 16#65, 16#00, 16#00, 16#00, + 16#07, 16#72, 16#65, 16#66, 16#65, 16#72, 16#65, 16#72, + 16#00, 16#00, 16#00, 16#0b, 16#72, 16#65, 16#74, 16#72, + 16#79, 16#2d, 16#61, 16#66, 16#74, 16#65, 16#72, 16#00, + 16#00, 16#00, 16#06, 16#73, 16#65, 16#72, 16#76, 16#65, + 16#72, 16#00, 16#00, 16#00, 16#02, 16#74, 16#65, 16#00, + 16#00, 16#00, 16#07, 16#74, 16#72, 16#61, 16#69, 16#6c, + 16#65, 16#72, 16#00, 16#00, 16#00, 16#11, 16#74, 16#72, + 16#61, 16#6e, 16#73, 16#66, 16#65, 16#72, 16#2d, 16#65, + 16#6e, 16#63, 16#6f, 16#64, 16#69, 16#6e, 16#67, 16#00, + 16#00, 16#00, 16#07, 16#75, 16#70, 16#67, 16#72, 16#61, + 16#64, 16#65, 16#00, 16#00, 16#00, 16#0a, 16#75, 16#73, + 16#65, 16#72, 16#2d, 16#61, 16#67, 16#65, 16#6e, 16#74, + 16#00, 16#00, 16#00, 16#04, 16#76, 16#61, 16#72, 16#79, + 16#00, 16#00, 16#00, 16#03, 16#76, 16#69, 16#61, 16#00, + 16#00, 16#00, 16#07, 16#77, 16#61, 16#72, 16#6e, 16#69, + 16#6e, 16#67, 16#00, 16#00, 16#00, 16#10, 16#77, 16#77, + 16#77, 16#2d, 16#61, 16#75, 16#74, 16#68, 16#65, 16#6e, + 16#74, 16#69, 16#63, 16#61, 16#74, 16#65, 16#00, 16#00, + 16#00, 16#06, 16#6d, 16#65, 16#74, 16#68, 16#6f, 16#64, + 16#00, 16#00, 16#00, 16#03, 16#67, 16#65, 16#74, 16#00, + 16#00, 16#00, 16#06, 16#73, 16#74, 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Copyright (c) 2013, Loïc Hoguin +%% +%% Permission to use, copy, modify, and/or distribute this software for any +%% purpose with or without fee is hereby granted, provided that the above +%% copyright notice and this permission notice appear in all copies. +%% +%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +{application, cowlib, [ + {description, "Support library for manipulating Web protocols."}, + {vsn, "0.1.0"}, + {modules, []}, + {registered, []}, + {applications, [ + kernel, + stdlib + ]} +]}. -- cgit v1.2.3