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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/inets/src/http_server/mod_trace.erl
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The R13B03 release.OTP_R13B03
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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2001-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+-module(mod_trace).
+
+-export([do/1]).
+
+-include("httpd.hrl").
+
+
+do(Info) ->
+ %%?vtrace("do",[]),
+ case Info#mod.method of
+ "TRACE" ->
+ case response_generated(Info) of
+ false->
+ generate_trace_response(Info);
+ true->
+ {proceed,Info#mod.data}
+ end;
+ _ ->
+ {proceed,Info#mod.data}
+ end.
+
+
+%%---------------------------------------------------------------------
+%%Generate the trace response the trace response consists of a
+%%http-header and the body will be the request.
+%5----------------------------------------------------------------------
+
+generate_trace_response(Info)->
+ RequestHead=Info#mod.parsed_header,
+ Body=generate_trace_response_body(RequestHead),
+ Len = length(Info#mod.request_line ++ Body),
+ Response=["HTTP/1.1 200 OK\r\n",
+ "Content-Type:message/http\r\n",
+ "Content-Length:",integer_to_list(Len),"\r\n\r\n",
+ Info#mod.request_line,Body],
+ httpd_socket:deliver(Info#mod.socket_type,Info#mod.socket,Response),
+ {proceed,[{response,{already_sent,200,Len}}|Info#mod.data]}.
+
+generate_trace_response_body(Parsed_header)->
+ generate_trace_response_body(Parsed_header,[]).
+
+generate_trace_response_body([],Head)->
+ lists:flatten(Head);
+generate_trace_response_body([{[],[]}|Rest],Head) ->
+ generate_trace_response_body(Rest,Head);
+generate_trace_response_body([{Field,Value}|Rest],Head) ->
+ generate_trace_response_body(Rest,[Field ++ ":" ++ Value ++ "\r\n"|Head]).
+
+
+
+%%----------------------------------------------------------------------
+%%Function that controls whether a response is generated or not
+%%----------------------------------------------------------------------
+response_generated(Info)->
+ case proplists:get_value(status, Info#mod.data) of
+ %% A status code has been generated!
+ {_StatusCode,_PhraseArgs,_Reason}->
+ true;
+ %%No status code control repsonsxe
+ undefined ->
+ case proplists:get_value(response, Info#mod.data) of
+ %% No response has been generated!
+ undefined ->
+ false;
+ %% A response has been generated or sent!
+ _Response ->
+ true
+ end
+ end.
+