1 files changed, 89 insertions, 0 deletions
diff --git a/lib/inets/src/http_server/mod_trace.erl b/lib/inets/src/http_server/mod_trace.erl
new file mode 100644
index 0000000000..df482228d8
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+++ b/lib/inets/src/http_server/mod_trace.erl
@@ -0,0 +1,89 @@
+%%
+%% %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.
+