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Diffstat (limited to 'src/ibrowse/ibrowse_http_client.erl')
| -rw-r--r-- | src/ibrowse/ibrowse_http_client.erl | 1821 |
1 files changed, 0 insertions, 1821 deletions
diff --git a/src/ibrowse/ibrowse_http_client.erl b/src/ibrowse/ibrowse_http_client.erl deleted file mode 100644 index 5dce321c..00000000 --- a/src/ibrowse/ibrowse_http_client.erl +++ /dev/null @@ -1,1821 +0,0 @@ -%%%------------------------------------------------------------------- -%%% File : ibrowse_http_client.erl -%%% Author : Chandrashekhar Mullaparthi <chandrashekhar.mullaparthi@t-mobile.co.uk> -%%% Description : The name says it all -%%% -%%% Created : 11 Oct 2003 by Chandrashekhar Mullaparthi <chandrashekhar.mullaparthi@t-mobile.co.uk> -%%%------------------------------------------------------------------- --module(ibrowse_http_client). --behaviour(gen_server). -%%-------------------------------------------------------------------- -%% Include files -%%-------------------------------------------------------------------- - -%%-------------------------------------------------------------------- -%% External exports --export([ - start_link/1, - start/1, - stop/1, - send_req/7 - ]). - --ifdef(debug). --compile(export_all). --endif. - -%% gen_server callbacks --export([ - init/1, - handle_call/3, - handle_cast/2, - handle_info/2, - terminate/2, - code_change/3 - ]). - --include("ibrowse.hrl"). - --record(state, {host, port, connect_timeout, - inactivity_timer_ref, - use_proxy = false, proxy_auth_digest, - ssl_options = [], is_ssl = false, socket, - proxy_tunnel_setup = false, - tunnel_setup_queue = [], - reqs=queue:new(), cur_req, status=idle, http_status_code, - reply_buffer = <<>>, rep_buf_size=0, streamed_size = 0, - recvd_headers=[], - status_line, raw_headers, - is_closing, send_timer, content_length, - deleted_crlf = false, transfer_encoding, - chunk_size, chunk_size_buffer = <<>>, - recvd_chunk_size, interim_reply_sent = false, - lb_ets_tid, cur_pipeline_size = 0, prev_req_id - }). - --record(request, {url, method, options, from, - stream_to, caller_controls_socket = false, - caller_socket_options = [], - req_id, - stream_chunk_size, - save_response_to_file = false, - tmp_file_name, tmp_file_fd, preserve_chunked_encoding, - response_format}). - --import(ibrowse_lib, [ - get_value/2, - get_value/3, - do_trace/2 - ]). - --define(DEFAULT_STREAM_CHUNK_SIZE, 1024*1024). --define(dec2hex(X), erlang:integer_to_list(X, 16)). -%%==================================================================== -%% External functions -%%==================================================================== -%%-------------------------------------------------------------------- -%% Function: start_link/0 -%% Description: Starts the server -%%-------------------------------------------------------------------- -start(Args) -> - gen_server:start(?MODULE, Args, []). - -start_link(Args) -> - gen_server:start_link(?MODULE, Args, []). - -stop(Conn_pid) -> - case catch gen_server:call(Conn_pid, stop) of - {'EXIT', {timeout, _}} -> - exit(Conn_pid, kill), - ok; - _ -> - ok - end. - -send_req(Conn_Pid, Url, Headers, Method, Body, Options, Timeout) -> - gen_server:call( - Conn_Pid, - {send_req, {Url, Headers, Method, Body, Options, Timeout}}, Timeout). - -%%==================================================================== -%% Server functions -%%==================================================================== - -%%-------------------------------------------------------------------- -%% Function: init/1 -%% Description: Initiates the server -%% Returns: {ok, State} | -%% {ok, State, Timeout} | -%% ignore | -%% {stop, Reason} -%%-------------------------------------------------------------------- -init({Lb_Tid, #url{host = Host, port = Port}, {SSLOptions, Is_ssl}}) -> - State = #state{host = Host, - port = Port, - ssl_options = SSLOptions, - is_ssl = Is_ssl, - lb_ets_tid = Lb_Tid}, - put(ibrowse_trace_token, [Host, $:, integer_to_list(Port)]), - put(my_trace_flag, ibrowse_lib:get_trace_status(Host, Port)), - {ok, State}; -init(Url) when is_list(Url) -> - case catch ibrowse_lib:parse_url(Url) of - #url{protocol = Protocol} = Url_rec -> - init({undefined, Url_rec, {[], Protocol == https}}); - {'EXIT', _} -> - {error, invalid_url} - end; -init({Host, Port}) -> - State = #state{host = Host, - port = Port}, - put(ibrowse_trace_token, [Host, $:, integer_to_list(Port)]), - put(my_trace_flag, ibrowse_lib:get_trace_status(Host, Port)), - {ok, State}. - -%%-------------------------------------------------------------------- -%% Function: handle_call/3 -%% Description: Handling call messages -%% Returns: {reply, Reply, State} | -%% {reply, Reply, State, Timeout} | -%% {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, Reply, State} | (terminate/2 is called) -%% {stop, Reason, State} (terminate/2 is called) -%%-------------------------------------------------------------------- -%% Received a request when the remote server has already sent us a -%% Connection: Close header -handle_call({send_req, _}, _From, #state{is_closing = true} = State) -> - {reply, {error, connection_closing}, State}; - -handle_call({send_req, {Url, Headers, Method, Body, Options, Timeout}}, - From, State) -> - send_req_1(From, Url, Headers, Method, Body, Options, Timeout, State); - -handle_call(stop, _From, State) -> - do_close(State), - do_error_reply(State, closing_on_request), - {stop, normal, ok, State}; - -handle_call(Request, _From, State) -> - Reply = {unknown_request, Request}, - {reply, Reply, State}. - -%%-------------------------------------------------------------------- -%% Function: handle_cast/2 -%% Description: Handling cast messages -%% Returns: {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, State} (terminate/2 is called) -%%-------------------------------------------------------------------- -handle_cast(_Msg, State) -> - {noreply, State}. - -%%-------------------------------------------------------------------- -%% Function: handle_info/2 -%% Description: Handling all non call/cast messages -%% Returns: {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, State} (terminate/2 is called) -%%-------------------------------------------------------------------- -handle_info({tcp, _Sock, Data}, #state{status = Status} = State) -> -%% io:format("Recvd data: ~p~n", [Data]), - do_trace("Data recvd in state: ~p. Size: ~p. ~p~n~n", [Status, size(Data), Data]), - handle_sock_data(Data, State); -handle_info({ssl, _Sock, Data}, State) -> - handle_sock_data(Data, State); - -handle_info({stream_next, Req_id}, #state{socket = Socket, - cur_req = #request{req_id = Req_id}} = State) -> - %% io:format("Client process set {active, once}~n", []), - do_setopts(Socket, [{active, once}], State), - {noreply, State}; - -handle_info({stream_next, _Req_id}, State) -> - _Cur_req_id = case State#state.cur_req of - #request{req_id = Cur} -> - Cur; - _ -> - undefined - end, -%% io:format("Ignoring stream_next as ~1000.p is not cur req (~1000.p)~n", -%% [_Req_id, _Cur_req_id]), - {noreply, State}; - -handle_info({stream_close, _Req_id}, State) -> - shutting_down(State), - do_close(State), - do_error_reply(State, closing_on_request), - {stop, normal, State}; - -handle_info({tcp_closed, _Sock}, State) -> - do_trace("TCP connection closed by peer!~n", []), - handle_sock_closed(State), - {stop, normal, State}; -handle_info({ssl_closed, _Sock}, State) -> - do_trace("SSL connection closed by peer!~n", []), - handle_sock_closed(State), - {stop, normal, State}; - -handle_info({tcp_error, _Sock}, State) -> - do_trace("Error on connection to ~1000.p:~1000.p~n", [State#state.host, State#state.port]), - handle_sock_closed(State), - {stop, normal, State}; -handle_info({ssl_error, _Sock}, State) -> - do_trace("Error on SSL connection to ~1000.p:~1000.p~n", [State#state.host, State#state.port]), - handle_sock_closed(State), - {stop, normal, State}; - -handle_info({req_timedout, From}, State) -> - case lists:keymember(From, #request.from, queue:to_list(State#state.reqs)) of - false -> - {noreply, State}; - true -> - shutting_down(State), - do_error_reply(State, req_timedout), - {stop, normal, State} - end; - -handle_info(timeout, State) -> - do_trace("Inactivity timeout triggered. Shutting down connection~n", []), - shutting_down(State), - do_error_reply(State, req_timedout), - {stop, normal, State}; - -handle_info({trace, Bool}, State) -> - put(my_trace_flag, Bool), - {noreply, State}; - -handle_info(Info, State) -> - io:format("Unknown message recvd for ~1000.p:~1000.p -> ~p~n", - [State#state.host, State#state.port, Info]), - io:format("Recvd unknown message ~p when in state: ~p~n", [Info, State]), - {noreply, State}. - -%%-------------------------------------------------------------------- -%% Function: terminate/2 -%% Description: Shutdown the server -%% Returns: any (ignored by gen_server) -%%-------------------------------------------------------------------- -terminate(_Reason, State) -> - do_close(State), - ok. - -%%-------------------------------------------------------------------- -%% Func: code_change/3 -%% Purpose: Convert process state when code is changed -%% Returns: {ok, NewState} -%%-------------------------------------------------------------------- -code_change(_OldVsn, State, _Extra) -> - {ok, State}. - -%%-------------------------------------------------------------------- -%%% Internal functions -%%-------------------------------------------------------------------- - -%%-------------------------------------------------------------------- -%% Handles data recvd on the socket -%%-------------------------------------------------------------------- -handle_sock_data(Data, #state{status=idle}=State) -> - do_trace("Data recvd on socket in state idle!. ~1000.p~n", [Data]), - shutting_down(State), - do_error_reply(State, data_in_status_idle), - do_close(State), - {stop, normal, State}; - -handle_sock_data(Data, #state{status = get_header}=State) -> - case parse_response(Data, State) of - {error, _Reason} -> - shutting_down(State), - {stop, normal, State}; - #state{socket = Socket, status = Status, cur_req = CurReq} = State_1 -> - case {Status, CurReq} of - {get_header, #request{caller_controls_socket = true}} -> - do_setopts(Socket, [{active, once}], State_1); - _ -> - active_once(State_1) - end, - {noreply, set_inac_timer(State_1)} - end; - -handle_sock_data(Data, #state{status = get_body, - socket = Socket, - content_length = CL, - http_status_code = StatCode, - recvd_headers = Headers, - chunk_size = CSz} = State) -> - case (CL == undefined) and (CSz == undefined) of - true -> - case accumulate_response(Data, State) of - {error, Reason} -> - shutting_down(State), - fail_pipelined_requests(State, - {error, {Reason, {stat_code, StatCode}, Headers}}), - {stop, normal, State}; - State_1 -> - active_once(State_1), - State_2 = set_inac_timer(State_1), - {noreply, State_2} - end; - _ -> - case parse_11_response(Data, State) of - {error, Reason} -> - shutting_down(State), - fail_pipelined_requests(State, - {error, {Reason, {stat_code, StatCode}, Headers}}), - {stop, normal, State}; - #state{cur_req = #request{caller_controls_socket = Ccs}, - interim_reply_sent = Irs} = State_1 -> - case Irs of - true -> - active_once(State_1); - false when Ccs == true -> - do_setopts(Socket, [{active, once}], State); - false -> - active_once(State_1) - end, - State_2 = State_1#state{interim_reply_sent = false}, - State_3 = set_inac_timer(State_2), - {noreply, State_3}; - State_1 -> - active_once(State_1), - State_2 = set_inac_timer(State_1), - {noreply, State_2} - end - end. - -accumulate_response(Data, - #state{ - cur_req = #request{save_response_to_file = Srtf, - tmp_file_fd = undefined} = CurReq, - http_status_code=[$2 | _]}=State) when Srtf /= false -> - TmpFilename = make_tmp_filename(Srtf), - case file:open(TmpFilename, [write, delayed_write, raw]) of - {ok, Fd} -> - accumulate_response(Data, State#state{ - cur_req = CurReq#request{ - tmp_file_fd = Fd, - tmp_file_name = TmpFilename}}); - {error, Reason} -> - {error, {file_open_error, Reason}} - end; -accumulate_response(Data, #state{cur_req = #request{save_response_to_file = Srtf, - tmp_file_fd = Fd}, - transfer_encoding=chunked, - reply_buffer = Reply_buf, - http_status_code=[$2 | _] - } = State) when Srtf /= false -> - case file:write(Fd, [Reply_buf, Data]) of - ok -> - State#state{reply_buffer = <<>>}; - {error, Reason} -> - {error, {file_write_error, Reason}} - end; -accumulate_response(Data, #state{cur_req = #request{save_response_to_file = Srtf, - tmp_file_fd = Fd}, - reply_buffer = RepBuf, - http_status_code=[$2 | _] - } = State) when Srtf /= false -> - case file:write(Fd, [RepBuf, Data]) of - ok -> - State#state{reply_buffer = <<>>}; - {error, Reason} -> - {error, {file_write_error, Reason}} - end; -accumulate_response(Data, #state{reply_buffer = RepBuf, - rep_buf_size = RepBufSize, - streamed_size = Streamed_size, - cur_req = CurReq}=State) -> - #request{stream_to = StreamTo, - req_id = ReqId, - stream_chunk_size = Stream_chunk_size, - response_format = Response_format, - caller_controls_socket = Caller_controls_socket} = CurReq, - RepBuf_1 = <<RepBuf/binary, Data/binary>>, - New_data_size = RepBufSize - Streamed_size, - case StreamTo of - undefined -> - State#state{reply_buffer = RepBuf_1}; - _ when Caller_controls_socket == true -> - do_interim_reply(StreamTo, Response_format, ReqId, RepBuf_1), - State#state{reply_buffer = <<>>, - interim_reply_sent = true, - streamed_size = Streamed_size + size(RepBuf_1)}; - _ when New_data_size >= Stream_chunk_size -> - {Stream_chunk, Rem_data} = split_binary(RepBuf_1, Stream_chunk_size), - do_interim_reply(StreamTo, Response_format, ReqId, Stream_chunk), - State_1 = State#state{ - reply_buffer = <<>>, - interim_reply_sent = true, - streamed_size = Streamed_size + Stream_chunk_size}, - case Rem_data of - <<>> -> - State_1; - _ -> - accumulate_response(Rem_data, State_1) - end; - _ -> - State#state{reply_buffer = RepBuf_1} - end. - -make_tmp_filename(true) -> - DownloadDir = ibrowse:get_config_value(download_dir, filename:absname("./")), - {A,B,C} = now(), - filename:join([DownloadDir, - "ibrowse_tmp_file_"++ - integer_to_list(A) ++ - integer_to_list(B) ++ - integer_to_list(C)]); -make_tmp_filename(File) when is_list(File) -> - File. - - -%%-------------------------------------------------------------------- -%% Handles the case when the server closes the socket -%%-------------------------------------------------------------------- -handle_sock_closed(#state{status=get_header} = State) -> - shutting_down(State), - do_error_reply(State, connection_closed); - -handle_sock_closed(#state{cur_req=undefined} = State) -> - shutting_down(State); - -%% We check for IsClosing because this the server could have sent a -%% Connection-Close header and has closed the socket to indicate end -%% of response. There maybe requests pipelined which need a response. -handle_sock_closed(#state{reply_buffer = Buf, reqs = Reqs, http_status_code = SC, - is_closing = IsClosing, - cur_req = #request{tmp_file_name=TmpFilename, - tmp_file_fd=Fd} = CurReq, - status = get_body, - recvd_headers = Headers, - status_line = Status_line, - raw_headers = Raw_headers - }=State) -> - #request{from=From, stream_to=StreamTo, req_id=ReqId, - response_format = Resp_format, - options = Options} = CurReq, - case IsClosing of - true -> - {_, Reqs_1} = queue:out(Reqs), - Body = case TmpFilename of - undefined -> - Buf; - _ -> - file:close(Fd), - {file, TmpFilename} - end, - Reply = case get_value(give_raw_headers, Options, false) of - true -> - {ok, Status_line, Raw_headers, Body}; - false -> - {ok, SC, Headers, Buf} - end, - do_reply(State, From, StreamTo, ReqId, Resp_format, Reply), - do_error_reply(State#state{reqs = Reqs_1}, connection_closed), - State; - _ -> - do_error_reply(State, connection_closed), - State - end. - -do_connect(Host, Port, Options, #state{is_ssl = true, - use_proxy = false, - ssl_options = SSLOptions}, - Timeout) -> - Caller_socket_options = get_value(socket_options, Options, []), - Other_sock_options = filter_sock_options(SSLOptions ++ Caller_socket_options), - ssl:connect(Host, Port, - [binary, {nodelay, true}, {active, false} | Other_sock_options], - Timeout); -do_connect(Host, Port, Options, _State, Timeout) -> - Caller_socket_options = get_value(socket_options, Options, []), - Other_sock_options = filter_sock_options(Caller_socket_options), - gen_tcp:connect(Host, to_integer(Port), - [binary, {nodelay, true}, {active, false} | Other_sock_options], - Timeout). - -%% We don't want the caller to specify certain options -filter_sock_options(Opts) -> - lists:filter(fun({active, _}) -> - false; - ({packet, _}) -> - false; - (list) -> - false; - (_) -> - true - end, Opts). - -do_send(Req, #state{socket = Sock, - is_ssl = true, - use_proxy = true, - proxy_tunnel_setup = Pts}) when Pts /= done -> gen_tcp:send(Sock, Req); -do_send(Req, #state{socket = Sock, is_ssl = true}) -> ssl:send(Sock, Req); -do_send(Req, #state{socket = Sock, is_ssl = false}) -> gen_tcp:send(Sock, Req). - -%% @spec do_send_body(Sock::socket_descriptor(), Source::source_descriptor(), IsSSL::boolean()) -> ok | error() -%% source_descriptor() = fun_arity_0 | -%% {fun_arity_0} | -%% {fun_arity_1, term()} -%% error() = term() -do_send_body(Source, State, TE) when is_function(Source) -> - do_send_body({Source}, State, TE); -do_send_body({Source}, State, TE) when is_function(Source) -> - do_send_body1(Source, Source(), State, TE); -do_send_body({Source, Source_state}, State, TE) when is_function(Source) -> - do_send_body1(Source, Source(Source_state), State, TE); -do_send_body(Body, State, _TE) -> - do_send(Body, State). - -do_send_body1(Source, Resp, State, TE) -> - case Resp of - {ok, Data} -> - do_send(maybe_chunked_encode(Data, TE), State), - do_send_body({Source}, State, TE); - {ok, Data, New_source_state} -> - do_send(maybe_chunked_encode(Data, TE), State), - do_send_body({Source, New_source_state}, State, TE); - eof when TE == true -> - do_send(<<"0\r\n\r\n">>, State), - ok; - eof -> - ok; - Err -> - Err - end. - -maybe_chunked_encode(Data, false) -> - Data; -maybe_chunked_encode(Data, true) -> - [?dec2hex(size(to_binary(Data))), "\r\n", Data, "\r\n"]. - -do_close(#state{socket = undefined}) -> ok; -do_close(#state{socket = Sock, - is_ssl = true, - use_proxy = true, - proxy_tunnel_setup = Pts - }) when Pts /= done -> catch gen_tcp:close(Sock); -do_close(#state{socket = Sock, is_ssl = true}) -> catch ssl:close(Sock); -do_close(#state{socket = Sock, is_ssl = false}) -> catch gen_tcp:close(Sock). - -active_once(#state{cur_req = #request{caller_controls_socket = true}}) -> - ok; -active_once(#state{socket = Socket} = State) -> - do_setopts(Socket, [{active, once}], State). - -do_setopts(_Sock, [], _) -> ok; -do_setopts(Sock, Opts, #state{is_ssl = true, - use_proxy = true, - proxy_tunnel_setup = Pts} - ) when Pts /= done -> inet:setopts(Sock, Opts); -do_setopts(Sock, Opts, #state{is_ssl = true}) -> ssl:setopts(Sock, Opts); -do_setopts(Sock, Opts, _) -> inet:setopts(Sock, Opts). - -check_ssl_options(Options, State) -> - case get_value(is_ssl, Options, false) of - false -> - State; - true -> - State#state{is_ssl=true, ssl_options=get_value(ssl_options, Options)} - end. - -send_req_1(From, - #url{host = Host, - port = Port} = Url, - Headers, Method, Body, Options, Timeout, - #state{socket = undefined} = State) -> - {Host_1, Port_1, State_1} = - case get_value(proxy_host, Options, false) of - false -> - {Host, Port, State}; - PHost -> - ProxyUser = get_value(proxy_user, Options, []), - ProxyPassword = get_value(proxy_password, Options, []), - Digest = http_auth_digest(ProxyUser, ProxyPassword), - {PHost, get_value(proxy_port, Options, 80), - State#state{use_proxy = true, - proxy_auth_digest = Digest}} - end, - State_2 = check_ssl_options(Options, State_1), - do_trace("Connecting...~n", []), - Conn_timeout = get_value(connect_timeout, Options, Timeout), - case do_connect(Host_1, Port_1, Options, State_2, Conn_timeout) of - {ok, Sock} -> - do_trace("Connected! Socket: ~1000.p~n", [Sock]), - State_3 = State_2#state{socket = Sock, - connect_timeout = Conn_timeout}, - send_req_1(From, Url, Headers, Method, Body, Options, Timeout, State_3); - Err -> - shutting_down(State_2), - do_trace("Error connecting. Reason: ~1000.p~n", [Err]), - gen_server:reply(From, {error, {conn_failed, Err}}), - {stop, normal, State_2} - end; - -%% Send a CONNECT request. -%% Wait for 200 OK -%% Upgrade to SSL connection -%% Then send request - -send_req_1(From, - #url{ - host = Server_host, - port = Server_port - } = Url, - Headers, Method, Body, Options, Timeout, - #state{ - proxy_tunnel_setup = false, - use_proxy = true, - is_ssl = true} = State) -> - NewReq = #request{ - method = connect, - preserve_chunked_encoding = get_value(preserve_chunked_encoding, Options, false), - options = Options - }, - State_1 = State#state{reqs=queue:in(NewReq, State#state.reqs)}, - Pxy_auth_headers = maybe_modify_headers(Url, Method, Options, [], State_1), - Path = [Server_host, $:, integer_to_list(Server_port)], - {Req, Body_1} = make_request(connect, Pxy_auth_headers, - Path, Path, - [], Options, State_1, undefined), - TE = is_chunked_encoding_specified(Options), - trace_request(Req), - case do_send(Req, State) of - ok -> - case do_send_body(Body_1, State_1, TE) of - ok -> - trace_request_body(Body_1), - active_once(State_1), - Ref = case Timeout of - infinity -> - undefined; - _ -> - erlang:send_after(Timeout, self(), {req_timedout, From}) - end, - State_2 = State_1#state{status = get_header, - cur_req = NewReq, - send_timer = Ref, - proxy_tunnel_setup = in_progress, - tunnel_setup_queue = [{From, Url, Headers, Method, Body, Options, Timeout}]}, - State_3 = set_inac_timer(State_2), - {noreply, State_3}; - Err -> - shutting_down(State_1), - do_trace("Send failed... Reason: ~p~n", [Err]), - gen_server:reply(From, {error, {send_failed, Err}}), - {stop, normal, State_1} - end; - Err -> - shutting_down(State_1), - do_trace("Send failed... Reason: ~p~n", [Err]), - gen_server:reply(From, {error, {send_failed, Err}}), - {stop, normal, State_1} - end; - -send_req_1(From, Url, Headers, Method, Body, Options, Timeout, - #state{proxy_tunnel_setup = in_progress, - tunnel_setup_queue = Q} = State) -> - do_trace("Queued SSL request awaiting tunnel setup: ~n" - "URL : ~s~n" - "Method : ~p~n" - "Headers : ~p~n", [Url, Method, Headers]), - {noreply, State#state{tunnel_setup_queue = [{From, Url, Headers, Method, Body, Options, Timeout} | Q]}}; - -send_req_1(From, - #url{abspath = AbsPath, - path = RelPath} = Url, - Headers, Method, Body, Options, Timeout, - #state{status = Status, - socket = Socket} = State) -> - cancel_timer(State#state.inactivity_timer_ref, {eat_message, timeout}), - ReqId = make_req_id(), - Resp_format = get_value(response_format, Options, list), - Caller_socket_options = get_value(socket_options, Options, []), - {StreamTo, Caller_controls_socket} = - case get_value(stream_to, Options, undefined) of - {Caller, once} when is_pid(Caller) or - is_atom(Caller) -> - Async_pid_rec = {{req_id_pid, ReqId}, self()}, - true = ets:insert(ibrowse_stream, Async_pid_rec), - {Caller, true}; - undefined -> - {undefined, false}; - Caller when is_pid(Caller) or - is_atom(Caller) -> - {Caller, false}; - Stream_to_inv -> - exit({invalid_option, {stream_to, Stream_to_inv}}) - end, - SaveResponseToFile = get_value(save_response_to_file, Options, false), - NewReq = #request{url = Url, - method = Method, - stream_to = StreamTo, - caller_controls_socket = Caller_controls_socket, - caller_socket_options = Caller_socket_options, - options = Options, - req_id = ReqId, - save_response_to_file = SaveResponseToFile, - stream_chunk_size = get_stream_chunk_size(Options), - response_format = Resp_format, - from = From, - preserve_chunked_encoding = get_value(preserve_chunked_encoding, Options, false) - }, - State_1 = State#state{reqs=queue:in(NewReq, State#state.reqs)}, - Headers_1 = maybe_modify_headers(Url, Method, Options, Headers, State_1), - {Req, Body_1} = make_request(Method, - Headers_1, - AbsPath, RelPath, Body, Options, State_1, - ReqId), - trace_request(Req), - do_setopts(Socket, Caller_socket_options, State_1), - TE = is_chunked_encoding_specified(Options), - case do_send(Req, State_1) of - ok -> - case do_send_body(Body_1, State_1, TE) of - ok -> - trace_request_body(Body_1), - State_2 = inc_pipeline_counter(State_1), - active_once(State_2), - Ref = case Timeout of - infinity -> - undefined; - _ -> - erlang:send_after(Timeout, self(), {req_timedout, From}) - end, - State_3 = case Status of - idle -> - State_2#state{status = get_header, - cur_req = NewReq, - send_timer = Ref}; - _ -> - State_2#state{send_timer = Ref} - end, - case StreamTo of - undefined -> - ok; - _ -> - gen_server:reply(From, {ibrowse_req_id, ReqId}) - end, - State_4 = set_inac_timer(State_3), - {noreply, State_4}; - Err -> - shutting_down(State_1), - do_trace("Send failed... Reason: ~p~n", [Err]), - gen_server:reply(From, {error, {send_failed, Err}}), - {stop, normal, State_1} - end; - Err -> - shutting_down(State_1), - do_trace("Send failed... Reason: ~p~n", [Err]), - gen_server:reply(From, {error, {send_failed, Err}}), - {stop, normal, State_1} - end. - -maybe_modify_headers(#url{}, connect, _, Headers, State) -> - add_proxy_auth_headers(State, Headers); -maybe_modify_headers(#url{host = Host, port = Port} = Url, - _Method, - Options, Headers, State) -> - case get_value(headers_as_is, Options, false) of - false -> - Headers_1 = add_auth_headers(Url, Options, Headers, State), - HostHeaderValue = case lists:keysearch(host_header, 1, Options) of - false -> - case Port of - 80 -> Host; - 443 -> Host; - _ -> [Host, ":", integer_to_list(Port)] - end; - {value, {_, Host_h_val}} -> - Host_h_val - end, - [{"Host", HostHeaderValue} | Headers_1]; - true -> - Headers - end. - -add_auth_headers(#url{username = User, - password = UPw}, - Options, - Headers, - State) -> - Headers_1 = case User of - undefined -> - case get_value(basic_auth, Options, undefined) of - undefined -> - Headers; - {U,P} -> - [{"Authorization", ["Basic ", http_auth_digest(U, P)]} | Headers] - end; - _ -> - [{"Authorization", ["Basic ", http_auth_digest(User, UPw)]} | Headers] - end, - add_proxy_auth_headers(State, Headers_1). - -add_proxy_auth_headers(#state{use_proxy = false}, Headers) -> - Headers; -add_proxy_auth_headers(#state{proxy_auth_digest = []}, Headers) -> - Headers; -add_proxy_auth_headers(#state{proxy_auth_digest = Auth_digest}, Headers) -> - [{"Proxy-Authorization", ["Basic ", Auth_digest]} | Headers]. - -http_auth_digest([], []) -> - []; -http_auth_digest(Username, Password) -> - ibrowse_lib:encode_base64(Username ++ [$: | Password]). - -make_request(Method, Headers, AbsPath, RelPath, Body, Options, - #state{use_proxy = UseProxy, is_ssl = Is_ssl}, ReqId) -> - HttpVsn = http_vsn_string(get_value(http_vsn, Options, {1,1})), - Fun1 = fun({X, Y}) when is_atom(X) -> - {to_lower(atom_to_list(X)), X, Y}; - ({X, Y}) when is_list(X) -> - {to_lower(X), X, Y} - end, - Headers_0 = [Fun1(X) || X <- Headers], - Headers_1 = - case lists:keysearch("content-length", 1, Headers_0) of - false when (Body =:= [] orelse Body =:= <<>>) andalso - (Method =:= post orelse Method =:= put) -> - [{"content-length", "Content-Length", "0"} | Headers_0]; - false when is_binary(Body) orelse is_list(Body) -> - [{"content-length", "Content-Length", integer_to_list(iolist_size(Body))} | Headers_0]; - _ -> - %% Content-Length is already specified or Body is a - %% function or function/state pair - Headers_0 - end, - {Headers_2, Body_1} = - case is_chunked_encoding_specified(Options) of - false -> - {[{Y, Z} || {_, Y, Z} <- Headers_1], Body}; - true -> - Chunk_size_1 = case get_value(transfer_encoding, Options) of - chunked -> - 5120; - {chunked, Chunk_size} -> - Chunk_size - end, - {[{Y, Z} || {X, Y, Z} <- Headers_1, - X /= "content-length"] ++ - [{"Transfer-Encoding", "chunked"}], - chunk_request_body(Body, Chunk_size_1)} - end, - Headers_3 = case lists:member({include_ibrowse_req_id, true}, Options) of - true -> - [{"x-ibrowse-request-id", io_lib:format("~1000.p",[ReqId])} | Headers_2]; - false -> - Headers_2 - end, - Headers_4 = cons_headers(Headers_3), - Uri = case get_value(use_absolute_uri, Options, false) or UseProxy of - true -> - case Is_ssl of - true -> - RelPath; - false -> - AbsPath - end; - false -> - RelPath - end, - {[method(Method), " ", Uri, " ", HttpVsn, crnl(), Headers_4, crnl()], Body_1}. - -is_chunked_encoding_specified(Options) -> - case get_value(transfer_encoding, Options, false) of - false -> - false; - {chunked, _} -> - true; - chunked -> - true - end. - -http_vsn_string({0,9}) -> "HTTP/0.9"; -http_vsn_string({1,0}) -> "HTTP/1.0"; -http_vsn_string({1,1}) -> "HTTP/1.1". - -cons_headers(Headers) -> - cons_headers(Headers, []). -cons_headers([], Acc) -> - encode_headers(Acc); -cons_headers([{basic_auth, {U,P}} | T], Acc) -> - cons_headers(T, [{"Authorization", - ["Basic ", ibrowse_lib:encode_base64(U++":"++P)]} | Acc]); -cons_headers([{cookie, Cookie} | T], Acc) -> - cons_headers(T, [{"Cookie", Cookie} | Acc]); -cons_headers([{content_length, L} | T], Acc) -> - cons_headers(T, [{"Content-Length", L} | Acc]); -cons_headers([{content_type, L} | T], Acc) -> - cons_headers(T, [{"Content-Type", L} | Acc]); -cons_headers([H | T], Acc) -> - cons_headers(T, [H | Acc]). - -encode_headers(L) -> - encode_headers(L, []). -encode_headers([{http_vsn, _Val} | T], Acc) -> - encode_headers(T, Acc); -encode_headers([{Name,Val} | T], Acc) when is_list(Name) -> - encode_headers(T, [[Name, ": ", fmt_val(Val), crnl()] | Acc]); -encode_headers([{Name,Val} | T], Acc) when is_atom(Name) -> - encode_headers(T, [[atom_to_list(Name), ": ", fmt_val(Val), crnl()] | Acc]); -encode_headers([], Acc) -> - lists:reverse(Acc). - -chunk_request_body(Body, _ChunkSize) when is_tuple(Body) orelse - is_function(Body) -> - Body; -chunk_request_body(Body, ChunkSize) -> - chunk_request_body(Body, ChunkSize, []). - -chunk_request_body(Body, _ChunkSize, Acc) when Body == <<>>; Body == [] -> - LastChunk = "0\r\n", - lists:reverse(["\r\n", LastChunk | Acc]); -chunk_request_body(Body, ChunkSize, Acc) when is_binary(Body), - size(Body) >= ChunkSize -> - <<ChunkBody:ChunkSize/binary, Rest/binary>> = Body, - Chunk = [?dec2hex(ChunkSize),"\r\n", - ChunkBody, "\r\n"], - chunk_request_body(Rest, ChunkSize, [Chunk | Acc]); -chunk_request_body(Body, _ChunkSize, Acc) when is_binary(Body) -> - BodySize = size(Body), - Chunk = [?dec2hex(BodySize),"\r\n", - Body, "\r\n"], - LastChunk = "0\r\n", - lists:reverse(["\r\n", LastChunk, Chunk | Acc]); -chunk_request_body(Body, ChunkSize, Acc) when length(Body) >= ChunkSize -> - {ChunkBody, Rest} = split_list_at(Body, ChunkSize), - Chunk = [?dec2hex(ChunkSize),"\r\n", - ChunkBody, "\r\n"], - chunk_request_body(Rest, ChunkSize, [Chunk | Acc]); -chunk_request_body(Body, _ChunkSize, Acc) when is_list(Body) -> - BodySize = length(Body), - Chunk = [?dec2hex(BodySize),"\r\n", - Body, "\r\n"], - LastChunk = "0\r\n", - lists:reverse(["\r\n", LastChunk, Chunk | Acc]). - - -parse_response(_Data, #state{cur_req = undefined}=State) -> - State#state{status = idle}; -parse_response(Data, #state{reply_buffer = Acc, reqs = Reqs, - cur_req = CurReq} = State) -> - #request{from=From, stream_to=StreamTo, req_id=ReqId, - method=Method, response_format = Resp_format, - options = Options - } = CurReq, - MaxHeaderSize = ibrowse:get_config_value(max_headers_size, infinity), - case scan_header(Acc, Data) of - {yes, Headers, Data_1} -> - do_trace("Recvd Header Data -> ~s~n----~n", [Headers]), - do_trace("Recvd headers~n--- Headers Begin ---~n~s~n--- Headers End ---~n~n", [Headers]), - {HttpVsn, StatCode, Headers_1, Status_line, Raw_headers} = parse_headers(Headers), - do_trace("HttpVsn: ~p StatusCode: ~p Headers_1 -> ~1000.p~n", [HttpVsn, StatCode, Headers_1]), - LCHeaders = [{to_lower(X), Y} || {X,Y} <- Headers_1], - ConnClose = to_lower(get_value("connection", LCHeaders, "false")), - IsClosing = is_connection_closing(HttpVsn, ConnClose), - case IsClosing of - true -> - shutting_down(State); - false -> - ok - end, - Give_raw_headers = get_value(give_raw_headers, Options, false), - State_1 = case Give_raw_headers of - true -> - State#state{recvd_headers=Headers_1, status=get_body, - reply_buffer = <<>>, - status_line = Status_line, - raw_headers = Raw_headers, - http_status_code=StatCode, is_closing=IsClosing}; - false -> - State#state{recvd_headers=Headers_1, status=get_body, - reply_buffer = <<>>, - http_status_code=StatCode, is_closing=IsClosing} - end, - put(conn_close, ConnClose), - TransferEncoding = to_lower(get_value("transfer-encoding", LCHeaders, "false")), - case get_value("content-length", LCHeaders, undefined) of - _ when Method == connect, - hd(StatCode) == $2 -> - cancel_timer(State#state.send_timer), - {_, Reqs_1} = queue:out(Reqs), - upgrade_to_ssl(set_cur_request(State#state{reqs = Reqs_1, - recvd_headers = [], - status = idle - })); - _ when Method == connect -> - {_, Reqs_1} = queue:out(Reqs), - do_error_reply(State#state{reqs = Reqs_1}, - {error, proxy_tunnel_failed}), - {error, proxy_tunnel_failed}; - _ when Method == head -> - {_, Reqs_1} = queue:out(Reqs), - send_async_headers(ReqId, StreamTo, Give_raw_headers, State_1), - State_1_1 = do_reply(State_1, From, StreamTo, ReqId, Resp_format, - {ok, StatCode, Headers_1, []}), - cancel_timer(State_1_1#state.send_timer, {eat_message, {req_timedout, From}}), - State_2 = reset_state(State_1_1), - State_3 = set_cur_request(State_2#state{reqs = Reqs_1}), - parse_response(Data_1, State_3); - _ when hd(StatCode) =:= $1 -> - %% No message body is expected. Server may send - %% one or more 1XX responses before a proper - %% response. - send_async_headers(ReqId, StreamTo, Give_raw_headers, State_1), - do_trace("Recvd a status code of ~p. Ignoring and waiting for a proper response~n", [StatCode]), - parse_response(Data_1, State_1#state{recvd_headers = [], - status = get_header}); - _ when StatCode =:= "204"; - StatCode =:= "304" -> - %% No message body is expected for these Status Codes. - %% RFC2616 - Sec 4.4 - {_, Reqs_1} = queue:out(Reqs), - send_async_headers(ReqId, StreamTo, Give_raw_headers, State_1), - State_1_1 = do_reply(State_1, From, StreamTo, ReqId, Resp_format, - {ok, StatCode, Headers_1, []}), - cancel_timer(State_1_1#state.send_timer, {eat_message, {req_timedout, From}}), - State_2 = reset_state(State_1_1), - State_3 = set_cur_request(State_2#state{reqs = Reqs_1}), - parse_response(Data_1, State_3); - _ when TransferEncoding =:= "chunked" -> - do_trace("Chunked encoding detected...~n",[]), - send_async_headers(ReqId, StreamTo, Give_raw_headers, State_1), - case parse_11_response(Data_1, State_1#state{transfer_encoding=chunked, - chunk_size=chunk_start, - reply_buffer = <<>>}) of - {error, Reason} -> - fail_pipelined_requests(State_1, - {error, {Reason, - {stat_code, StatCode}, Headers_1}}), - {error, Reason}; - State_2 -> - State_2 - end; - undefined when HttpVsn =:= "HTTP/1.0"; - ConnClose =:= "close" -> - send_async_headers(ReqId, StreamTo, Give_raw_headers, State_1), - State_1#state{reply_buffer = Data_1}; - undefined -> - fail_pipelined_requests(State_1, - {error, {content_length_undefined, - {stat_code, StatCode}, Headers}}), - {error, content_length_undefined}; - V -> - case catch list_to_integer(V) of - V_1 when is_integer(V_1), V_1 >= 0 -> - send_async_headers(ReqId, StreamTo, Give_raw_headers, State_1), - do_trace("Recvd Content-Length of ~p~n", [V_1]), - State_2 = State_1#state{rep_buf_size=0, - reply_buffer = <<>>, - content_length=V_1}, - case parse_11_response(Data_1, State_2) of - {error, Reason} -> - fail_pipelined_requests(State_1, - {error, {Reason, - {stat_code, StatCode}, Headers_1}}), - {error, Reason}; - State_3 -> - State_3 - end; - _ -> - fail_pipelined_requests(State_1, - {error, {content_length_undefined, - {stat_code, StatCode}, Headers}}), - {error, content_length_undefined} - end - end; - {no, Acc_1} when MaxHeaderSize == infinity -> - State#state{reply_buffer = Acc_1}; - {no, Acc_1} when size(Acc_1) < MaxHeaderSize -> - State#state{reply_buffer = Acc_1}; - {no, _Acc_1} -> - fail_pipelined_requests(State, {error, max_headers_size_exceeded}), - {error, max_headers_size_exceeded} - end. - -upgrade_to_ssl(#state{socket = Socket, - connect_timeout = Conn_timeout, - ssl_options = Ssl_options, - tunnel_setup_queue = Q} = State) -> - case ssl:connect(Socket, Ssl_options, Conn_timeout) of - {ok, Ssl_socket} -> - do_trace("Upgraded to SSL socket!!~n", []), - State_1 = State#state{socket = Ssl_socket, - proxy_tunnel_setup = done}, - send_queued_requests(lists:reverse(Q), State_1); - Err -> - do_trace("Upgrade to SSL socket failed. Reson: ~p~n", [Err]), - do_error_reply(State, {error, {send_failed, Err}}), - {error, send_failed} - end. - -send_queued_requests([], State) -> - do_trace("Sent all queued requests via SSL connection~n", []), - State#state{tunnel_setup_queue = []}; -send_queued_requests([{From, Url, Headers, Method, Body, Options, Timeout} | Q], - State) -> - case send_req_1(From, Url, Headers, Method, Body, Options, Timeout, State) of - {noreply, State_1} -> - send_queued_requests(Q, State_1); - Err -> - do_trace("Error sending queued SSL request: ~n" - "URL : ~s~n" - "Method : ~p~n" - "Headers : ~p~n", [Url, Method, Headers]), - do_error_reply(State, {error, {send_failed, Err}}), - {error, send_failed} - end. - -is_connection_closing("HTTP/0.9", _) -> true; -is_connection_closing(_, "close") -> true; -is_connection_closing("HTTP/1.0", "false") -> true; -is_connection_closing(_, _) -> false. - -%% This clause determines the chunk size when given data from the beginning of the chunk -parse_11_response(DataRecvd, - #state{transfer_encoding = chunked, - chunk_size = chunk_start, - chunk_size_buffer = Chunk_sz_buf - } = State) -> - case scan_crlf(Chunk_sz_buf, DataRecvd) of - {yes, ChunkHeader, Data_1} -> - State_1 = maybe_accumulate_ce_data(State, <<ChunkHeader/binary, $\r, $\n>>), - ChunkSize = parse_chunk_header(ChunkHeader), - %% - %% Do we have to preserve the chunk encoding when - %% streaming? NO. This should be transparent to the client - %% process. Chunked encoding was only introduced to make - %% it efficient for the server. - %% - RemLen = size(Data_1), - do_trace("Determined chunk size: ~p. Already recvd: ~p~n", - [ChunkSize, RemLen]), - parse_11_response(Data_1, State_1#state{chunk_size_buffer = <<>>, - deleted_crlf = true, - recvd_chunk_size = 0, - chunk_size = ChunkSize}); - {no, Data_1} -> - State#state{chunk_size_buffer = Data_1} - end; - -%% This clause is to remove the CRLF between two chunks -%% -parse_11_response(DataRecvd, - #state{transfer_encoding = chunked, - chunk_size = tbd, - chunk_size_buffer = Buf - } = State) -> - case scan_crlf(Buf, DataRecvd) of - {yes, _, NextChunk} -> - State_1 = maybe_accumulate_ce_data(State, <<$\r, $\n>>), - State_2 = State_1#state{chunk_size = chunk_start, - chunk_size_buffer = <<>>, - deleted_crlf = true}, - parse_11_response(NextChunk, State_2); - {no, Data_1} -> - State#state{chunk_size_buffer = Data_1} - end; - -%% This clause deals with the end of a chunked transfer. ibrowse does -%% not support Trailers in the Chunked Transfer encoding. Any trailer -%% received is silently discarded. -parse_11_response(DataRecvd, - #state{transfer_encoding = chunked, chunk_size = 0, - cur_req = CurReq, - deleted_crlf = DelCrlf, - chunk_size_buffer = Trailer, - reqs = Reqs} = State) -> - do_trace("Detected end of chunked transfer...~n", []), - DataRecvd_1 = case DelCrlf of - false -> - DataRecvd; - true -> - <<$\r, $\n, DataRecvd/binary>> - end, - case scan_header(Trailer, DataRecvd_1) of - {yes, TEHeaders, Rem} -> - {_, Reqs_1} = queue:out(Reqs), - State_1 = maybe_accumulate_ce_data(State, <<TEHeaders/binary, $\r, $\n>>), - State_2 = handle_response(CurReq, - State_1#state{reqs = Reqs_1}), - parse_response(Rem, reset_state(State_2)); - {no, Rem} -> - accumulate_response(<<>>, State#state{chunk_size_buffer = Rem, deleted_crlf = false}) - end; - -%% This clause extracts a chunk, given the size. -parse_11_response(DataRecvd, - #state{transfer_encoding = chunked, - chunk_size = CSz, - recvd_chunk_size = Recvd_csz, - rep_buf_size = RepBufSz} = State) -> - NeedBytes = CSz - Recvd_csz, - DataLen = size(DataRecvd), - do_trace("Recvd more data: size: ~p. NeedBytes: ~p~n", [DataLen, NeedBytes]), - case DataLen >= NeedBytes of - true -> - {RemChunk, RemData} = split_binary(DataRecvd, NeedBytes), - do_trace("Recvd another chunk...~p~n", [RemChunk]), - do_trace("RemData -> ~p~n", [RemData]), - case accumulate_response(RemChunk, State) of - {error, Reason} -> - do_trace("Error accumulating response --> ~p~n", [Reason]), - {error, Reason}; - #state{} = State_1 -> - State_2 = State_1#state{chunk_size=tbd}, - parse_11_response(RemData, State_2) - end; - false -> - accumulate_response(DataRecvd, - State#state{rep_buf_size = RepBufSz + DataLen, - recvd_chunk_size = Recvd_csz + DataLen}) - end; - -%% This clause to extract the body when Content-Length is specified -parse_11_response(DataRecvd, - #state{content_length=CL, rep_buf_size=RepBufSz, - reqs=Reqs}=State) -> - NeedBytes = CL - RepBufSz, - DataLen = size(DataRecvd), - case DataLen >= NeedBytes of - true -> - {RemBody, Rem} = split_binary(DataRecvd, NeedBytes), - {_, Reqs_1} = queue:out(Reqs), - State_1 = accumulate_response(RemBody, State), - State_2 = handle_response(State_1#state.cur_req, State_1#state{reqs=Reqs_1}), - State_3 = reset_state(State_2), - parse_response(Rem, State_3); - false -> - accumulate_response(DataRecvd, State#state{rep_buf_size = (RepBufSz+DataLen)}) - end. - -maybe_accumulate_ce_data(#state{cur_req = #request{preserve_chunked_encoding = false}} = State, _) -> - State; -maybe_accumulate_ce_data(State, Data) -> - accumulate_response(Data, State). - -handle_response(#request{from=From, stream_to=StreamTo, req_id=ReqId, - response_format = Resp_format, - save_response_to_file = SaveResponseToFile, - tmp_file_name = TmpFilename, - tmp_file_fd = Fd, - options = Options - }, - #state{http_status_code = SCode, - status_line = Status_line, - raw_headers = Raw_headers, - send_timer = ReqTimer, - reply_buffer = RepBuf, - recvd_headers = RespHeaders}=State) when SaveResponseToFile /= false -> - Body = RepBuf, - file:close(Fd), - ResponseBody = case TmpFilename of - undefined -> - Body; - _ -> - {file, TmpFilename} - end, - {Resp_headers_1, Raw_headers_1} = maybe_add_custom_headers(RespHeaders, Raw_headers, Options), - Reply = case get_value(give_raw_headers, Options, false) of - true -> - {ok, Status_line, Raw_headers_1, ResponseBody}; - false -> - {ok, SCode, Resp_headers_1, ResponseBody} - end, - State_1 = do_reply(State, From, StreamTo, ReqId, Resp_format, Reply), - cancel_timer(ReqTimer, {eat_message, {req_timedout, From}}), - set_cur_request(State_1); -handle_response(#request{from=From, stream_to=StreamTo, req_id=ReqId, - response_format = Resp_format, - options = Options}, - #state{http_status_code = SCode, - status_line = Status_line, - raw_headers = Raw_headers, - recvd_headers = Resp_headers, - reply_buffer = RepBuf, - send_timer = ReqTimer} = State) -> - Body = RepBuf, - {Resp_headers_1, Raw_headers_1} = maybe_add_custom_headers(Resp_headers, Raw_headers, Options), - Reply = case get_value(give_raw_headers, Options, false) of - true -> - {ok, Status_line, Raw_headers_1, Body}; - false -> - {ok, SCode, Resp_headers_1, Body} - end, - State_1 = do_reply(State, From, StreamTo, ReqId, Resp_format, Reply), - cancel_timer(ReqTimer, {eat_message, {req_timedout, From}}), - set_cur_request(State_1). - -reset_state(State) -> - State#state{status = get_header, - rep_buf_size = 0, - streamed_size = 0, - content_length = undefined, - reply_buffer = <<>>, - chunk_size_buffer = <<>>, - recvd_headers = [], - status_line = undefined, - raw_headers = undefined, - deleted_crlf = false, - http_status_code = undefined, - chunk_size = undefined, - transfer_encoding = undefined - }. - -set_cur_request(#state{reqs = Reqs, socket = Socket} = State) -> - case queue:to_list(Reqs) of - [] -> - State#state{cur_req = undefined}; - [#request{caller_controls_socket = Ccs} = NextReq | _] -> - case Ccs of - true -> - do_setopts(Socket, [{active, once}], State); - _ -> - ok - end, - State#state{cur_req = NextReq} - end. - -parse_headers(Headers) -> - case scan_crlf(Headers) of - {yes, StatusLine, T} -> - parse_headers(StatusLine, T); - {no, StatusLine} -> - parse_headers(StatusLine, <<>>) - end. - -parse_headers(StatusLine, Headers) -> - Headers_1 = parse_headers_1(Headers), - case parse_status_line(StatusLine) of - {ok, HttpVsn, StatCode, _Msg} -> - put(http_prot_vsn, HttpVsn), - {HttpVsn, StatCode, Headers_1, StatusLine, Headers}; - _ -> %% A HTTP 0.9 response? - put(http_prot_vsn, "HTTP/0.9"), - {"HTTP/0.9", undefined, Headers, StatusLine, Headers} - end. - -% From RFC 2616 -% -% HTTP/1.1 header field values can be folded onto multiple lines if -% the continuation line begins with a space or horizontal tab. All -% linear white space, including folding, has the same semantics as -% SP. A recipient MAY replace any linear white space with a single -% SP before interpreting the field value or forwarding the message -% downstream. -parse_headers_1(B) when is_binary(B) -> - parse_headers_1(binary_to_list(B)); -parse_headers_1(String) -> - parse_headers_1(String, [], []). - -parse_headers_1([$\n, H |T], [$\r | L], Acc) when H =:= 32; - H =:= $\t -> - parse_headers_1(lists:dropwhile(fun(X) -> - is_whitespace(X) - end, T), [32 | L], Acc); -parse_headers_1([$\n|T], [$\r | L], Acc) -> - case parse_header(lists:reverse(L)) of - invalid -> - parse_headers_1(T, [], Acc); - NewHeader -> - parse_headers_1(T, [], [NewHeader | Acc]) - end; -parse_headers_1([H|T], L, Acc) -> - parse_headers_1(T, [H|L], Acc); -parse_headers_1([], [], Acc) -> - lists:reverse(Acc); -parse_headers_1([], L, Acc) -> - Acc_1 = case parse_header(lists:reverse(L)) of - invalid -> - Acc; - NewHeader -> - [NewHeader | Acc] - end, - lists:reverse(Acc_1). - -parse_status_line(Line) when is_binary(Line) -> - parse_status_line(binary_to_list(Line)); -parse_status_line(Line) -> - parse_status_line(Line, get_prot_vsn, [], []). -parse_status_line([32 | T], get_prot_vsn, ProtVsn, StatCode) -> - parse_status_line(T, get_status_code, ProtVsn, StatCode); -parse_status_line([32 | T], get_status_code, ProtVsn, StatCode) -> - {ok, lists:reverse(ProtVsn), lists:reverse(StatCode), T}; -parse_status_line([], get_status_code, ProtVsn, StatCode) -> - {ok, lists:reverse(ProtVsn), lists:reverse(StatCode), []}; -parse_status_line([H | T], get_prot_vsn, ProtVsn, StatCode) -> - parse_status_line(T, get_prot_vsn, [H|ProtVsn], StatCode); -parse_status_line([H | T], get_status_code, ProtVsn, StatCode) -> - parse_status_line(T, get_status_code, ProtVsn, [H | StatCode]); -parse_status_line([], _, _, _) -> - http_09. - -parse_header(L) -> - parse_header(L, []). - -parse_header([$: | V], Acc) -> - {lists:reverse(Acc), string:strip(V)}; -parse_header([H | T], Acc) -> - parse_header(T, [H | Acc]); -parse_header([], _) -> - invalid. - -scan_header(Bin) -> - case get_crlf_crlf_pos(Bin, 0) of - {yes, Pos} -> - {Headers, <<_:4/binary, Body/binary>>} = split_binary(Bin, Pos), - {yes, Headers, Body}; - no -> - {no, Bin} - end. - -scan_header(Bin1, Bin2) when size(Bin1) < 4 -> - scan_header(<<Bin1/binary, Bin2/binary>>); -scan_header(Bin1, <<>>) -> - scan_header(Bin1); -scan_header(Bin1, Bin2) -> - Bin1_already_scanned_size = size(Bin1) - 4, - <<Headers_prefix:Bin1_already_scanned_size/binary, Rest/binary>> = Bin1, - Bin_to_scan = <<Rest/binary, Bin2/binary>>, - case get_crlf_crlf_pos(Bin_to_scan, 0) of - {yes, Pos} -> - {Headers_suffix, <<_:4/binary, Body/binary>>} = split_binary(Bin_to_scan, Pos), - {yes, <<Headers_prefix/binary, Headers_suffix/binary>>, Body}; - no -> - {no, <<Bin1/binary, Bin2/binary>>} - end. - -get_crlf_crlf_pos(<<$\r, $\n, $\r, $\n, _/binary>>, Pos) -> {yes, Pos}; -get_crlf_crlf_pos(<<_, Rest/binary>>, Pos) -> get_crlf_crlf_pos(Rest, Pos + 1); -get_crlf_crlf_pos(<<>>, _) -> no. - -scan_crlf(Bin) -> - case get_crlf_pos(Bin) of - {yes, Pos} -> - {Prefix, <<_, _, Suffix/binary>>} = split_binary(Bin, Pos), - {yes, Prefix, Suffix}; - no -> - {no, Bin} - end. - -scan_crlf(<<>>, Bin2) -> - scan_crlf(Bin2); -scan_crlf(Bin1, Bin2) when size(Bin1) < 2 -> - scan_crlf(<<Bin1/binary, Bin2/binary>>); -scan_crlf(Bin1, Bin2) -> - scan_crlf_1(size(Bin1) - 2, Bin1, Bin2). - -scan_crlf_1(Bin1_head_size, Bin1, Bin2) -> - <<Bin1_head:Bin1_head_size/binary, Bin1_tail/binary>> = Bin1, - Bin3 = <<Bin1_tail/binary, Bin2/binary>>, - case get_crlf_pos(Bin3) of - {yes, Pos} -> - {Prefix, <<_, _, Suffix/binary>>} = split_binary(Bin3, Pos), - {yes, list_to_binary([Bin1_head, Prefix]), Suffix}; - no -> - {no, list_to_binary([Bin1, Bin2])} - end. - -get_crlf_pos(Bin) -> - get_crlf_pos(Bin, 0). - -get_crlf_pos(<<$\r, $\n, _/binary>>, Pos) -> {yes, Pos}; -get_crlf_pos(<<_, Rest/binary>>, Pos) -> get_crlf_pos(Rest, Pos + 1); -get_crlf_pos(<<>>, _) -> no. - -fmt_val(L) when is_list(L) -> L; -fmt_val(I) when is_integer(I) -> integer_to_list(I); -fmt_val(A) when is_atom(A) -> atom_to_list(A); -fmt_val(Term) -> io_lib:format("~p", [Term]). - -crnl() -> "\r\n". - -method(get) -> "GET"; -method(post) -> "POST"; -method(head) -> "HEAD"; -method(options) -> "OPTIONS"; -method(put) -> "PUT"; -method(delete) -> "DELETE"; -method(trace) -> "TRACE"; -method(mkcol) -> "MKCOL"; -method(propfind) -> "PROPFIND"; -method(proppatch) -> "PROPPATCH"; -method(lock) -> "LOCK"; -method(unlock) -> "UNLOCK"; -method(move) -> "MOVE"; -method(copy) -> "COPY"; -method(connect) -> "CONNECT". - -%% From RFC 2616 -%% -% The chunked encoding modifies the body of a message in order to -% transfer it as a series of chunks, each with its own size indicator, -% followed by an OPTIONAL trailer containing entity-header -% fields. This allows dynamically produced content to be transferred -% along with the information necessary for the recipient to verify -% that it has received the full message. -% Chunked-Body = *chunk -% last-chunk -% trailer -% CRLF -% chunk = chunk-size [ chunk-extension ] CRLF -% chunk-data CRLF -% chunk-size = 1*HEX -% last-chunk = 1*("0") [ chunk-extension ] CRLF -% chunk-extension= *( ";" chunk-ext-name [ "=" chunk-ext-val ] ) -% chunk-ext-name = token -% chunk-ext-val = token | quoted-string -% chunk-data = chunk-size(OCTET) -% trailer = *(entity-header CRLF) -% The chunk-size field is a string of hex digits indicating the size -% of the chunk. The chunked encoding is ended by any chunk whose size -% is zero, followed by the trailer, which is terminated by an empty -% line. -%% -%% The parsing implemented here discards all chunk extensions. It also -%% strips trailing spaces from the chunk size fields as Apache 1.3.27 was -%% sending them. -parse_chunk_header(ChunkHeader) -> - parse_chunk_header(ChunkHeader, []). - -parse_chunk_header(<<$;, _/binary>>, Acc) -> - hexlist_to_integer(lists:reverse(Acc)); -parse_chunk_header(<<H, T/binary>>, Acc) -> - case is_whitespace(H) of - true -> - parse_chunk_header(T, Acc); - false -> - parse_chunk_header(T, [H | Acc]) - end; -parse_chunk_header(<<>>, Acc) -> - hexlist_to_integer(lists:reverse(Acc)). - -is_whitespace($\s) -> true; -is_whitespace($\r) -> true; -is_whitespace($\n) -> true; -is_whitespace($\t) -> true; -is_whitespace(_) -> false. - -send_async_headers(_ReqId, undefined, _, _State) -> - ok; -send_async_headers(ReqId, StreamTo, Give_raw_headers, - #state{status_line = Status_line, raw_headers = Raw_headers, - recvd_headers = Headers, http_status_code = StatCode, - cur_req = #request{options = Opts} - }) -> - {Headers_1, Raw_headers_1} = maybe_add_custom_headers(Headers, Raw_headers, Opts), - case Give_raw_headers of - false -> - catch StreamTo ! {ibrowse_async_headers, ReqId, StatCode, Headers_1}; - true -> - catch StreamTo ! {ibrowse_async_headers, ReqId, Status_line, Raw_headers_1} - end. - -maybe_add_custom_headers(Headers, Raw_headers, Opts) -> - Custom_headers = get_value(add_custom_headers, Opts, []), - Headers_1 = Headers ++ Custom_headers, - Raw_headers_1 = case Custom_headers of - [_ | _] when is_binary(Raw_headers) -> - Custom_headers_bin = list_to_binary(string:join([[X, $:, Y] || {X, Y} <- Custom_headers], "\r\n")), - <<Raw_headers/binary, "\r\n", Custom_headers_bin/binary>>; - _ -> - Raw_headers - end, - {Headers_1, Raw_headers_1}. - -format_response_data(Resp_format, Body) -> - case Resp_format of - list when is_list(Body) -> - flatten(Body); - list when is_binary(Body) -> - binary_to_list(Body); - binary when is_list(Body) -> - list_to_binary(Body); - _ -> - %% This is to cater for sending messages such as - %% {chunk_start, _}, chunk_end etc - Body - end. - -do_reply(State, From, undefined, _, Resp_format, {ok, St_code, Headers, Body}) -> - Msg_1 = {ok, St_code, Headers, format_response_data(Resp_format, Body)}, - gen_server:reply(From, Msg_1), - dec_pipeline_counter(State); -do_reply(State, From, undefined, _, _, Msg) -> - gen_server:reply(From, Msg), - dec_pipeline_counter(State); -do_reply(#state{prev_req_id = Prev_req_id} = State, - _From, StreamTo, ReqId, Resp_format, {ok, _, _, Body}) -> - State_1 = dec_pipeline_counter(State), - case Body of - [] -> - ok; - _ -> - Body_1 = format_response_data(Resp_format, Body), - catch StreamTo ! {ibrowse_async_response, ReqId, Body_1} - end, - catch StreamTo ! {ibrowse_async_response_end, ReqId}, - %% We don't want to delete the Req-id to Pid mapping straightaway - %% as the client may send a stream_next message just while we are - %% sending back this ibrowse_async_response_end message. If we - %% deleted this mapping straightaway, the caller will see a - %% {error, unknown_req_id} when it calls ibrowse:stream_next/1. To - %% get around this, we store the req id, and clear it after the - %% next request. If there are wierd combinations of stream, - %% stream_once and sync requests on the same connection, it will - %% take a while for the req_id-pid mapping to get cleared, but it - %% should do no harm. - ets:delete(ibrowse_stream, {req_id_pid, Prev_req_id}), - State_1#state{prev_req_id = ReqId}; -do_reply(State, _From, StreamTo, ReqId, Resp_format, Msg) -> - State_1 = dec_pipeline_counter(State), - Msg_1 = format_response_data(Resp_format, Msg), - catch StreamTo ! {ibrowse_async_response, ReqId, Msg_1}, - State_1. - -do_interim_reply(undefined, _, _ReqId, _Msg) -> - ok; -do_interim_reply(StreamTo, Response_format, ReqId, Msg) -> - Msg_1 = format_response_data(Response_format, Msg), - catch StreamTo ! {ibrowse_async_response, ReqId, Msg_1}. - -do_error_reply(#state{reqs = Reqs, tunnel_setup_queue = Tun_q} = State, Err) -> - ReqList = queue:to_list(Reqs), - lists:foreach(fun(#request{from=From, stream_to=StreamTo, req_id=ReqId, - response_format = Resp_format}) -> - ets:delete(ibrowse_stream, {req_id_pid, ReqId}), - do_reply(State, From, StreamTo, ReqId, Resp_format, {error, Err}) - end, ReqList), - lists:foreach( - fun({From, _Url, _Headers, _Method, _Body, _Options, _Timeout}) -> - do_reply(State, From, undefined, undefined, undefined, Err) - end, Tun_q). - -fail_pipelined_requests(#state{reqs = Reqs, cur_req = CurReq} = State, Reply) -> - {_, Reqs_1} = queue:out(Reqs), - #request{from=From, stream_to=StreamTo, req_id=ReqId, - response_format = Resp_format} = CurReq, - do_reply(State, From, StreamTo, ReqId, Resp_format, Reply), - do_error_reply(State#state{reqs = Reqs_1}, previous_request_failed). - -split_list_at(List, N) -> - split_list_at(List, N, []). - -split_list_at([], _, Acc) -> - {lists:reverse(Acc), []}; -split_list_at(List2, 0, List1) -> - {lists:reverse(List1), List2}; -split_list_at([H | List2], N, List1) -> - split_list_at(List2, N-1, [H | List1]). - -hexlist_to_integer(List) -> - hexlist_to_integer(lists:reverse(List), 1, 0). - -hexlist_to_integer([H | T], Multiplier, Acc) -> - hexlist_to_integer(T, Multiplier*16, Multiplier*to_ascii(H) + Acc); -hexlist_to_integer([], _, Acc) -> - Acc. - -to_ascii($A) -> 10; -to_ascii($a) -> 10; -to_ascii($B) -> 11; -to_ascii($b) -> 11; -to_ascii($C) -> 12; -to_ascii($c) -> 12; -to_ascii($D) -> 13; -to_ascii($d) -> 13; -to_ascii($E) -> 14; -to_ascii($e) -> 14; -to_ascii($F) -> 15; -to_ascii($f) -> 15; -to_ascii($1) -> 1; -to_ascii($2) -> 2; -to_ascii($3) -> 3; -to_ascii($4) -> 4; -to_ascii($5) -> 5; -to_ascii($6) -> 6; -to_ascii($7) -> 7; -to_ascii($8) -> 8; -to_ascii($9) -> 9; -to_ascii($0) -> 0. - -cancel_timer(undefined) -> ok; -cancel_timer(Ref) -> erlang:cancel_timer(Ref). - -cancel_timer(Ref, {eat_message, Msg}) -> - cancel_timer(Ref), - receive - Msg -> - ok - after 0 -> - ok - end. - -make_req_id() -> - now(). - -to_lower(Str) -> - to_lower(Str, []). -to_lower([H|T], Acc) when H >= $A, H =< $Z -> - to_lower(T, [H+32|Acc]); -to_lower([H|T], Acc) -> - to_lower(T, [H|Acc]); -to_lower([], Acc) -> - lists:reverse(Acc). - -shutting_down(#state{lb_ets_tid = undefined}) -> - ok; -shutting_down(#state{lb_ets_tid = Tid, - cur_pipeline_size = Sz}) -> - catch ets:delete(Tid, {Sz, self()}). - -inc_pipeline_counter(#state{is_closing = true} = State) -> - State; -inc_pipeline_counter(#state{cur_pipeline_size = Pipe_sz} = State) -> - State#state{cur_pipeline_size = Pipe_sz + 1}. - -dec_pipeline_counter(#state{is_closing = true} = State) -> - State; -dec_pipeline_counter(#state{lb_ets_tid = undefined} = State) -> - State; -dec_pipeline_counter(#state{cur_pipeline_size = Pipe_sz, - lb_ets_tid = Tid} = State) -> - ets:delete(Tid, {Pipe_sz, self()}), - ets:insert(Tid, {{Pipe_sz - 1, self()}, []}), - State#state{cur_pipeline_size = Pipe_sz - 1}. - -flatten([H | _] = L) when is_integer(H) -> - L; -flatten([H | _] = L) when is_list(H) -> - lists:flatten(L); -flatten([]) -> - []. - -get_stream_chunk_size(Options) -> - case lists:keysearch(stream_chunk_size, 1, Options) of - {value, {_, V}} when V > 0 -> - V; - _ -> - ?DEFAULT_STREAM_CHUNK_SIZE - end. - -set_inac_timer(State) -> - cancel_timer(State#state.inactivity_timer_ref), - set_inac_timer(State#state{inactivity_timer_ref = undefined}, - get_inac_timeout(State)). - -set_inac_timer(State, Timeout) when is_integer(Timeout) -> - Ref = erlang:send_after(Timeout, self(), timeout), - State#state{inactivity_timer_ref = Ref}; -set_inac_timer(State, _) -> - State. - -get_inac_timeout(#state{cur_req = #request{options = Opts}}) -> - get_value(inactivity_timeout, Opts, infinity); -get_inac_timeout(#state{cur_req = undefined}) -> - case ibrowse:get_config_value(inactivity_timeout, undefined) of - Val when is_integer(Val) -> - Val; - _ -> - case application:get_env(ibrowse, inactivity_timeout) of - {ok, Val} when is_integer(Val), Val > 0 -> - Val; - _ -> - 10000 - end - end. - -trace_request(Req) -> - case get(my_trace_flag) of - true -> - %%Avoid the binary operations if trace is not on... - NReq = to_binary(Req), - do_trace("Sending request: ~n" - "--- Request Begin ---~n~s~n" - "--- Request End ---~n", [NReq]); - _ -> ok - end. - -trace_request_body(Body) -> - case get(my_trace_flag) of - true -> - %%Avoid the binary operations if trace is not on... - NBody = to_binary(Body), - case size(NBody) > 1024 of - true -> - ok; - false -> - do_trace("Sending request body: ~n" - "--- Request Body Begin ---~n~s~n" - "--- Request Body End ---~n", [NBody]) - end; - false -> - ok - end. - -to_integer(X) when is_list(X) -> list_to_integer(X); -to_integer(X) when is_integer(X) -> X. - -to_binary(X) when is_list(X) -> list_to_binary(X); -to_binary(X) when is_binary(X) -> X. |