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authorIngela Anderton Andin <[email protected]>2015-05-27 09:01:07 +0200
committerIngela Anderton Andin <[email protected]>2015-05-29 14:58:22 +0200
commitd9671919ed9d0cbdc71f4e83d4cc11d200482226 (patch)
treec7225d83b4eb9ac449762fe19ae092eee40f904f /lib/inets/src/http_server/httpd_request.erl
parentf3fefbae24a2569a13b538d80d0e99129963ebef (diff)
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inets: Add customize option
Many HTTP headers are optional, and it could be desirable for the server to filter and maybe even alter them without replacing the mod_* modules that generate/process them. Add new behaviour httpd_custom_api with default implementation in httpd_custom.erl. Add behaviour module in 18 as then we can specify optional callbacks.
Diffstat (limited to 'lib/inets/src/http_server/httpd_request.erl')
-rw-r--r--lib/inets/src/http_server/httpd_request.erl140
1 files changed, 74 insertions, 66 deletions
diff --git a/lib/inets/src/http_server/httpd_request.erl b/lib/inets/src/http_server/httpd_request.erl
index 3ff07616f9..782120c284 100644
--- a/lib/inets/src/http_server/httpd_request.erl
+++ b/lib/inets/src/http_server/httpd_request.erl
@@ -42,28 +42,28 @@
%%%=========================================================================
%%% Internal application API
%%%=========================================================================
-parse([Bin, MaxSizes]) ->
- ?hdrt("parse", [{bin, Bin}, {max_sizes, MaxSizes}]),
- parse_method(Bin, [], 0, proplists:get_value(max_method, MaxSizes), MaxSizes, []);
+parse([Bin, Options]) ->
+ ?hdrt("parse", [{bin, Bin}, {max_sizes, Options}]),
+ parse_method(Bin, [], 0, proplists:get_value(max_method, Options), Options, []);
parse(Unknown) ->
?hdrt("parse", [{unknown, Unknown}]),
exit({bad_args, Unknown}).
%% Functions that may be returned during the decoding process
%% if the input data is incompleate.
-parse_method([Bin, Method, Current, Max, MaxSizes, Result]) ->
- parse_method(Bin, Method, Current, Max, MaxSizes, Result).
+parse_method([Bin, Method, Current, Max, Options, Result]) ->
+ parse_method(Bin, Method, Current, Max, Options, Result).
-parse_uri([Bin, URI, Current, Max, MaxSizes, Result]) ->
- parse_uri(Bin, URI, Current, Max, MaxSizes, Result).
+parse_uri([Bin, URI, Current, Max, Options, Result]) ->
+ parse_uri(Bin, URI, Current, Max, Options, Result).
-parse_version([Bin, Rest, Version, Current, Max, MaxSizes, Result]) ->
- parse_version(<<Rest/binary, Bin/binary>>, Version, Current, Max, MaxSizes,
+parse_version([Bin, Rest, Version, Current, Max, Options, Result]) ->
+ parse_version(<<Rest/binary, Bin/binary>>, Version, Current, Max, Options,
Result).
-parse_headers([Bin, Rest, Header, Headers, Current, Max, MaxSizes, Result]) ->
+parse_headers([Bin, Rest, Header, Headers, Current, Max, Options, Result]) ->
parse_headers(<<Rest/binary, Bin/binary>>,
- Header, Headers, Current, Max, MaxSizes, Result).
+ Header, Headers, Current, Max, Options, Result).
whole_body([Bin, Body, Length]) ->
whole_body(<<Body/binary, Bin/binary>>, Length).
@@ -134,13 +134,13 @@ update_mod_data(ModData, Method, RequestURI, HTTPVersion, Headers)->
%%%========================================================================
%%% Internal functions
%%%========================================================================
-parse_method(<<>>, Method, Current, Max, MaxSizes, Result) ->
- {?MODULE, parse_method, [Method, Current, Max, MaxSizes, Result]};
-parse_method(<<?SP, Rest/binary>>, Method, _Current, _Max, MaxSizes, Result) ->
- parse_uri(Rest, [], 0, proplists:get_value(max_uri, MaxSizes), MaxSizes,
+parse_method(<<>>, Method, Current, Max, Options, Result) ->
+ {?MODULE, parse_method, [Method, Current, Max, Options, Result]};
+parse_method(<<?SP, Rest/binary>>, Method, _Current, _Max, Options, Result) ->
+ parse_uri(Rest, [], 0, proplists:get_value(max_uri, Options), Options,
[string:strip(lists:reverse(Method)) | Result]);
-parse_method(<<Octet, Rest/binary>>, Method, Current, Max, MaxSizes, Result) when Current =< Max ->
- parse_method(Rest, [Octet | Method], Current + 1, Max, MaxSizes, Result);
+parse_method(<<Octet, Rest/binary>>, Method, Current, Max, Options, Result) when Current =< Max ->
+ parse_method(Rest, [Octet | Method], Current + 1, Max, Options, Result);
parse_method(_, _, _, Max, _, _) ->
%% We do not know the version of the client as it comes after the
%% method send the lowest version in the response so that the client
@@ -153,30 +153,30 @@ parse_uri(_, _, Current, MaxURI, _, _)
%% uri send the lowest version in the response so that the client
%% will be able to handle it.
{error, {size_error, MaxURI, 414, "URI unreasonably long"},lowest_version()};
-parse_uri(<<>>, URI, Current, Max, MaxSizes, Result) ->
- {?MODULE, parse_uri, [URI, Current, Max, MaxSizes, Result]};
-parse_uri(<<?SP, Rest/binary>>, URI, _, _, MaxSizes, Result) ->
- parse_version(Rest, [], 0, proplists:get_value(max_version, MaxSizes), MaxSizes,
+parse_uri(<<>>, URI, Current, Max, Options, Result) ->
+ {?MODULE, parse_uri, [URI, Current, Max, Options, Result]};
+parse_uri(<<?SP, Rest/binary>>, URI, _, _, Options, Result) ->
+ parse_version(Rest, [], 0, proplists:get_value(max_version, Options), Options,
[string:strip(lists:reverse(URI)) | Result]);
%% Can happen if it is a simple HTTP/0.9 request e.i "GET /\r\n\r\n"
-parse_uri(<<?CR, _Rest/binary>> = Data, URI, _, _, MaxSizes, Result) ->
- parse_version(Data, [], 0, proplists:get_value(max_version, MaxSizes), MaxSizes,
+parse_uri(<<?CR, _Rest/binary>> = Data, URI, _, _, Options, Result) ->
+ parse_version(Data, [], 0, proplists:get_value(max_version, Options), Options,
[string:strip(lists:reverse(URI)) | Result]);
-parse_uri(<<Octet, Rest/binary>>, URI, Current, Max, MaxSizes, Result) ->
- parse_uri(Rest, [Octet | URI], Current + 1, Max, MaxSizes, Result).
+parse_uri(<<Octet, Rest/binary>>, URI, Current, Max, Options, Result) ->
+ parse_uri(Rest, [Octet | URI], Current + 1, Max, Options, Result).
-parse_version(<<>>, Version, Current, Max, MaxSizes, Result) ->
- {?MODULE, parse_version, [<<>>, Version, Current, Max, MaxSizes, Result]};
-parse_version(<<?LF, Rest/binary>>, Version, Current, Max, MaxSizes, Result) ->
+parse_version(<<>>, Version, Current, Max, Options, Result) ->
+ {?MODULE, parse_version, [<<>>, Version, Current, Max, Options, Result]};
+parse_version(<<?LF, Rest/binary>>, Version, Current, Max, Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_version(<<?CR, ?LF, Rest/binary>>, Version, Current, Max, MaxSizes, Result);
-parse_version(<<?CR, ?LF, Rest/binary>>, Version, _, _, MaxSizes, Result) ->
- parse_headers(Rest, [], [], 0, proplists:get_value(max_header, MaxSizes), MaxSizes,
+ parse_version(<<?CR, ?LF, Rest/binary>>, Version, Current, Max, Options, Result);
+parse_version(<<?CR, ?LF, Rest/binary>>, Version, _, _, Options, Result) ->
+ parse_headers(Rest, [], [], 0, proplists:get_value(max_header, Options), Options,
[string:strip(lists:reverse(Version)) | Result]);
-parse_version(<<?CR>> = Data, Version, Current, Max, MaxSizes, Result) ->
- {?MODULE, parse_version, [Data, Version, Current, Max, MaxSizes, Result]};
-parse_version(<<Octet, Rest/binary>>, Version, Current, Max, MaxSizes, Result) when Current =< Max ->
- parse_version(Rest, [Octet | Version], Current + 1, Max, MaxSizes, Result);
+parse_version(<<?CR>> = Data, Version, Current, Max, Options, Result) ->
+ {?MODULE, parse_version, [Data, Version, Current, Max, Options, Result]};
+parse_version(<<Octet, Rest/binary>>, Version, Current, Max, Options, Result) when Current =< Max ->
+ parse_version(Rest, [Octet | Version], Current + 1, Max, Options, Result);
parse_version(_, _, _, Max,_,_) ->
{error, {size_error, Max, 413, "Version string unreasonably long"}, lowest_version()}.
@@ -185,34 +185,42 @@ parse_headers(_, _, _, Current, Max, _, Result)
HttpVersion = lists:nth(3, lists:reverse(Result)),
{error, {size_error, Max, 413, "Headers unreasonably long"}, HttpVersion};
-parse_headers(<<>>, Header, Headers, Current, Max, MaxSizes, Result) ->
+parse_headers(<<>>, Header, Headers, Current, Max, Options, Result) ->
{?MODULE, parse_headers, [<<>>, Header, Headers, Current, Max,
- MaxSizes, Result]};
-parse_headers(<<?CR,?LF,?LF,Body/binary>>, [], [], Current, Max, MaxSizes, Result) ->
+ Options, Result]};
+parse_headers(<<?CR,?LF,?LF,Body/binary>>, [], [], Current, Max, Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], Current, Max,
- MaxSizes, Result);
+ Options, Result);
-parse_headers(<<?LF,?LF,Body/binary>>, [], [], Current, Max, MaxSizes, Result) ->
+parse_headers(<<?LF,?LF,Body/binary>>, [], [], Current, Max, Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], Current, Max,
- MaxSizes, Result);
+ Options, Result);
parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], _, _, _, Result) ->
NewResult = list_to_tuple(lists:reverse([Body, {#http_request_h{}, []} |
Result])),
{ok, NewResult};
parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, Header, Headers, _, _,
- MaxSizes, Result) ->
+ Options, Result) ->
+ Customize = proplists:get_value(customize, Options),
case http_request:key_value(lists:reverse(Header)) of
undefined -> %% Skip headers with missing :
- {ok, list_to_tuple(lists:reverse([Body, {http_request:headers(Headers, #http_request_h{}), Headers} | Result]))};
+ FinalHeaders = lists:filtermap(fun(H) ->
+ httpd_custom:customize_headers(Customize, request_header, H)
+ end,
+ Headers),
+ {ok, list_to_tuple(lists:reverse([Body, {http_request:headers(FinalHeaders, #http_request_h{}), FinalHeaders} | Result]))};
NewHeader ->
- case check_header(NewHeader, MaxSizes) of
+ case check_header(NewHeader, Options) of
ok ->
- {ok, list_to_tuple(lists:reverse([Body, {http_request:headers([NewHeader | Headers],
+ FinalHeaders = lists:filtermap(fun(H) ->
+ httpd_custom:customize_headers(Customize, request_header, H)
+ end, [NewHeader | Headers]),
+ {ok, list_to_tuple(lists:reverse([Body, {http_request:headers(FinalHeaders,
#http_request_h{}),
- [NewHeader | Headers]} | Result]))};
+ FinalHeaders} | Result]))};
{error, Reason} ->
HttpVersion = lists:nth(3, lists:reverse(Result)),
@@ -221,12 +229,12 @@ parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, Header, Headers, _, _,
end;
parse_headers(<<?CR,?LF,?CR>> = Data, Header, Headers, Current, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
{?MODULE, parse_headers, [Data, Header, Headers, Current, Max,
- MaxSizes, Result]};
-parse_headers(<<?LF>>, [], [], Current, Max, MaxSizes, Result) ->
+ Options, Result]};
+parse_headers(<<?LF>>, [], [], Current, Max, Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF>>, [], [], Current, Max, MaxSizes, Result);
+ parse_headers(<<?CR,?LF>>, [], [], Current, Max, Options, Result);
%% There where no headers, which is unlikely to happen.
parse_headers(<<?CR,?LF>>, [], [], _, _, _, Result) ->
@@ -235,30 +243,30 @@ parse_headers(<<?CR,?LF>>, [], [], _, _, _, Result) ->
{ok, NewResult};
parse_headers(<<?LF>>, Header, Headers, Current, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF>>, Header, Headers, Current, Max, MaxSizes, Result);
+ parse_headers(<<?CR,?LF>>, Header, Headers, Current, Max, Options, Result);
parse_headers(<<?CR,?LF>> = Data, Header, Headers, Current, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
{?MODULE, parse_headers, [Data, Header, Headers, Current, Max,
- MaxSizes, Result]};
+ Options, Result]};
parse_headers(<<?LF, Octet, Rest/binary>>, Header, Headers, Current, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, Current, Max,
- MaxSizes, Result);
+ Options, Result);
parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, _, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
case http_request:key_value(lists:reverse(Header)) of
undefined -> %% Skip headers with missing :
parse_headers(Rest, [Octet], Headers,
- 0, Max, MaxSizes, Result);
+ 0, Max, Options, Result);
NewHeader ->
- case check_header(NewHeader, MaxSizes) of
+ case check_header(NewHeader, Options) of
ok ->
parse_headers(Rest, [Octet], [NewHeader | Headers],
- 0, Max, MaxSizes, Result);
+ 0, Max, Options, Result);
{error, Reason} ->
HttpVersion = lists:nth(3, lists:reverse(Result)),
{error, Reason, HttpVersion}
@@ -266,19 +274,19 @@ parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, _, Max,
end;
parse_headers(<<?CR>> = Data, Header, Headers, Current, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
{?MODULE, parse_headers, [Data, Header, Headers, Current, Max,
- MaxSizes, Result]};
+ Options, Result]};
parse_headers(<<?LF>>, Header, Headers, Current, Max,
- MaxSizes, Result) ->
+ Options, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
parse_headers(<<?CR, ?LF>>, Header, Headers, Current, Max,
- MaxSizes, Result);
+ Options, Result);
parse_headers(<<Octet, Rest/binary>>, Header, Headers, Current,
- Max, MaxSizes, Result) ->
+ Max, Options, Result) ->
parse_headers(Rest, [Octet | Header], Headers, Current + 1, Max,
- MaxSizes, Result).
+ Options, Result).
whole_body(Body, Length) ->
case size(Body) of