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-rw-r--r--lib/inets/src/http_server/httpd_request.erl204
1 files changed, 94 insertions, 110 deletions
diff --git a/lib/inets/src/http_server/httpd_request.erl b/lib/inets/src/http_server/httpd_request.erl
index 5ba79b2706..712c73599f 100644
--- a/lib/inets/src/http_server/httpd_request.erl
+++ b/lib/inets/src/http_server/httpd_request.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2005-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2014. 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
@@ -44,26 +44,26 @@
%%%=========================================================================
parse([Bin, MaxSizes]) ->
?hdrt("parse", [{bin, Bin}, {max_sizes, MaxSizes}]),
- parse_method(Bin, [], MaxSizes, []);
+ parse_method(Bin, [], 0, proplists:get_value(max_method, MaxSizes), MaxSizes, []);
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, MaxSizes, Result]) ->
- parse_method(Bin, Method, MaxSizes, Result).
+parse_method([Bin, Method, Current, Max, MaxSizes, Result]) ->
+ parse_method(Bin, Method, Current, Max, MaxSizes, Result).
-parse_uri([Bin, URI, CurrSize, MaxSizes, Result]) ->
- parse_uri(Bin, URI, CurrSize, MaxSizes, Result).
+parse_uri([Bin, URI, Current, Max, MaxSizes, Result]) ->
+ parse_uri(Bin, URI, Current, Max, MaxSizes, Result).
-parse_version([Bin, Rest, Version, MaxSizes, Result]) ->
- parse_version(<<Rest/binary, Bin/binary>>, Version, MaxSizes,
+parse_version([Bin, Rest, Version, Current, Max, MaxSizes, Result]) ->
+ parse_version(<<Rest/binary, Bin/binary>>, Version, Current, Max, MaxSizes,
Result).
-parse_headers([Bin, Rest, Header, Headers, CurrSize, MaxSizes, Result]) ->
+parse_headers([Bin, Rest, Header, Headers, Current, Max, MaxSizes, Result]) ->
parse_headers(<<Rest/binary, Bin/binary>>,
- Header, Headers, CurrSize, MaxSizes, Result).
+ Header, Headers, Current, Max, MaxSizes, Result).
whole_body([Bin, Body, Length]) ->
whole_body(<<Body/binary, Bin/binary>>, Length).
@@ -107,8 +107,12 @@ validate("POST", Uri, "HTTP/1." ++ _N) ->
validate("TRACE", Uri, "HTTP/1." ++ N) when hd(N) >= $1 ->
validate_uri(Uri);
validate(Method, Uri, Version) ->
- {error, {not_supported, {Method, Uri, Version}}}.
-
+ case validate_version(Version) of
+ true ->
+ {error, {not_supported, {Method, Uri, Version}}};
+ false ->
+ {error, {bad_version, Version}}
+ end.
%%----------------------------------------------------------------------
%% The request is passed through the server as a record of type mod
%% create it.
@@ -131,104 +135,75 @@ update_mod_data(ModData, Method, RequestURI, HTTPVersion, Headers)->
%%%========================================================================
%%% Internal functions
%%%========================================================================
-parse_method(<<>>, Method, MaxSizes, Result) ->
- ?hdrt("parse_method - empty bin",
- [{method, Method}, {max_sizes, MaxSizes}, {result, Result}]),
- {?MODULE, parse_method, [Method, MaxSizes, Result]};
-parse_method(<<?SP, Rest/binary>>, Method, MaxSizes, Result) ->
- ?hdrt("parse_method - SP begin",
- [{rest, Rest},
- {method, Method},
- {max_sizes, MaxSizes},
- {result, Result}]),
- parse_uri(Rest, [], 0, MaxSizes,
+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,
[string:strip(lists:reverse(Method)) | Result]);
-parse_method(<<Octet, Rest/binary>>, Method, MaxSizes, Result) ->
- ?hdrt("parse_method",
- [{octet, Octet},
- {rest, Rest},
- {method, Method},
- {max_sizes, MaxSizes},
- {result, Result}]),
- parse_method(Rest, [Octet | Method], MaxSizes, Result).
-
-parse_uri(_, _, CurrSize, {MaxURI, _}, _)
- when (CurrSize > MaxURI) andalso (MaxURI =/= nolimit) ->
- ?hdrt("parse_uri",
- [{current_size, CurrSize},
- {max_uri, MaxURI}]),
+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(_, _, _, 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
+ %% will be able to handle it.
+ {error, {too_long, Max, 413, "Method unreasonably long"}, lowest_version()}.
+
+parse_uri(_, _, Current, MaxURI, _, _)
+ when (Current > MaxURI) andalso (MaxURI =/= nolimit) ->
%% We do not know the version of the client as it comes after the
%% uri send the lowest version in the response so that the client
%% will be able to handle it.
- HttpVersion = "HTTP/0.9",
- {error, {uri_too_long, MaxURI}, HttpVersion};
-parse_uri(<<>>, URI, CurrSize, MaxSizes, Result) ->
- ?hdrt("parse_uri - empty bin",
- [{uri, URI},
- {current_size, CurrSize},
- {max_sz, MaxSizes},
- {result, Result}]),
- {?MODULE, parse_uri, [URI, CurrSize, MaxSizes, Result]};
-parse_uri(<<?SP, Rest/binary>>, URI, _, MaxSizes, Result) ->
- ?hdrt("parse_uri - SP begin",
- [{uri, URI},
- {max_sz, MaxSizes},
- {result, Result}]),
- parse_version(Rest, [], MaxSizes,
+ {error, {too_long, 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,
[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) ->
- ?hdrt("parse_uri - CR begin",
- [{uri, URI},
- {max_sz, MaxSizes},
- {result, Result}]),
- parse_version(Data, [], MaxSizes,
+parse_uri(<<?CR, _Rest/binary>> = Data, URI, _, _, MaxSizes, Result) ->
+ parse_version(Data, [], 0, proplists:get_value(max_version, MaxSizes), MaxSizes,
[string:strip(lists:reverse(URI)) | Result]);
-parse_uri(<<Octet, Rest/binary>>, URI, CurrSize, MaxSizes, Result) ->
- ?hdrt("parse_uri",
- [{octet, Octet},
- {uri, URI},
- {curr_sz, CurrSize},
- {max_sz, MaxSizes},
- {result, Result}]),
- parse_uri(Rest, [Octet | URI], CurrSize + 1, MaxSizes, Result).
-
-parse_version(<<>>, Version, MaxSizes, Result) ->
- {?MODULE, parse_version, [<<>>, Version, MaxSizes, Result]};
-parse_version(<<?LF, Rest/binary>>, Version, MaxSizes, Result) ->
+parse_uri(<<Octet, Rest/binary>>, URI, Current, Max, MaxSizes, Result) ->
+ parse_uri(Rest, [Octet | URI], Current + 1, Max, MaxSizes, 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) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_version(<<?CR, ?LF, Rest/binary>>, Version, MaxSizes, Result);
-parse_version(<<?CR, ?LF, Rest/binary>>, Version, MaxSizes, Result) ->
- parse_headers(Rest, [], [], 0, MaxSizes,
+ 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,
[string:strip(lists:reverse(Version)) | Result]);
-parse_version(<<?CR>> = Data, Version, MaxSizes, Result) ->
- {?MODULE, parse_version, [Data, Version, MaxSizes, Result]};
-parse_version(<<Octet, Rest/binary>>, Version, MaxSizes, Result) ->
- parse_version(Rest, [Octet | Version], MaxSizes, Result).
-
-parse_headers(_, _, _, CurrSize, {_, MaxHeaderSize}, Result)
- when CurrSize > MaxHeaderSize, MaxHeaderSize =/= nolimit ->
+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(_, _, _, Max,_,_) ->
+ {error, {too_long, Max, 413, "Version string unreasonably long"}, lowest_version()}.
+
+parse_headers(_, _, _, Current, Max, _, Result)
+ when Max =/= nolimit andalso Current > Max ->
HttpVersion = lists:nth(3, lists:reverse(Result)),
- {error, {header_too_long, MaxHeaderSize}, HttpVersion};
+ {error, {too_long, Max, 413, "Headers unreasonably long"}, HttpVersion};
-parse_headers(<<>>, Header, Headers, CurrSize, MaxSizes, Result) ->
- {?MODULE, parse_headers, [<<>>, Header, Headers, CurrSize,
+parse_headers(<<>>, Header, Headers, Current, Max, MaxSizes, Result) ->
+ {?MODULE, parse_headers, [<<>>, Header, Headers, Current, Max,
MaxSizes, Result]};
-parse_headers(<<?CR,?LF,?LF,Body/binary>>, [], [], CurrSize, MaxSizes, Result) ->
+parse_headers(<<?CR,?LF,?LF,Body/binary>>, [], [], Current, Max, MaxSizes, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], CurrSize,
+ parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], Current, Max,
MaxSizes, Result);
-parse_headers(<<?LF,?LF,Body/binary>>, [], [], CurrSize, MaxSizes, Result) ->
+parse_headers(<<?LF,?LF,Body/binary>>, [], [], Current, Max, MaxSizes, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], CurrSize,
+ parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], Current, Max,
MaxSizes, Result);
-parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, [], [], _, _, 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, _,
+parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, Header, Headers, _, _,
_, Result) ->
HTTPHeaders = [lists:reverse(Header) | Headers],
RequestHeaderRcord =
@@ -238,52 +213,51 @@ parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, Header, Headers, _,
HTTPHeaders} | Result])),
{ok, NewResult};
-parse_headers(<<?CR,?LF,?CR>> = Data, Header, Headers, CurrSize,
+parse_headers(<<?CR,?LF,?CR>> = Data, Header, Headers, Current, Max,
MaxSizes, Result) ->
- {?MODULE, parse_headers, [Data, Header, Headers, CurrSize,
+ {?MODULE, parse_headers, [Data, Header, Headers, Current, Max,
MaxSizes, Result]};
-parse_headers(<<?LF>>, [], [], CurrSize, MaxSizes, Result) ->
+parse_headers(<<?LF>>, [], [], Current, Max, MaxSizes, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF>>, [], [], CurrSize, MaxSizes, Result);
+ parse_headers(<<?CR,?LF>>, [], [], Current, Max, MaxSizes, Result);
%% There where no headers, which is unlikely to happen.
-parse_headers(<<?CR,?LF>>, [], [], _, _, Result) ->
+parse_headers(<<?CR,?LF>>, [], [], _, _, _, Result) ->
NewResult = list_to_tuple(lists:reverse([<<>>, {#http_request_h{}, []} |
Result])),
{ok, NewResult};
-parse_headers(<<?LF>>, Header, Headers, CurrSize,
+parse_headers(<<?LF>>, Header, Headers, Current, Max,
MaxSizes, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF>>, Header, Headers, CurrSize, MaxSizes, Result);
+ parse_headers(<<?CR,?LF>>, Header, Headers, Current, Max, MaxSizes, Result);
-parse_headers(<<?CR,?LF>> = Data, Header, Headers, CurrSize,
+parse_headers(<<?CR,?LF>> = Data, Header, Headers, Current, Max,
MaxSizes, Result) ->
- {?MODULE, parse_headers, [Data, Header, Headers, CurrSize,
+ {?MODULE, parse_headers, [Data, Header, Headers, Current, Max,
MaxSizes, Result]};
-parse_headers(<<?LF, Octet, Rest/binary>>, Header, Headers, CurrSize,
+parse_headers(<<?LF, Octet, Rest/binary>>, Header, Headers, Current, Max,
MaxSizes, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, CurrSize,
+ parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, Current, Max,
MaxSizes, Result);
-parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, CurrSize,
+parse_headers(<<?CR,?LF, Octet, Rest/binary>>, Header, Headers, _, Max,
MaxSizes, Result) ->
parse_headers(Rest, [Octet], [lists:reverse(Header) | Headers],
- CurrSize + 1, MaxSizes, Result);
-
-parse_headers(<<?CR>> = Data, Header, Headers, CurrSize,
+ 0, Max, MaxSizes, Result);
+parse_headers(<<?CR>> = Data, Header, Headers, Current, Max,
MaxSizes, Result) ->
- {?MODULE, parse_headers, [Data, Header, Headers, CurrSize,
+ {?MODULE, parse_headers, [Data, Header, Headers, Current, Max,
MaxSizes, Result]};
-parse_headers(<<?LF>>, Header, Headers, CurrSize,
+parse_headers(<<?LF>>, Header, Headers, Current, Max,
MaxSizes, Result) ->
%% If ?CR is is missing RFC2616 section-19.3
- parse_headers(<<?CR, ?LF>>, Header, Headers, CurrSize,
+ parse_headers(<<?CR, ?LF>>, Header, Headers, Current, Max,
MaxSizes, Result);
-parse_headers(<<Octet, Rest/binary>>, Header, Headers,
- CurrSize, MaxSizes, Result) ->
- parse_headers(Rest, [Octet | Header], Headers, CurrSize + 1,
+parse_headers(<<Octet, Rest/binary>>, Header, Headers, Current,
+ Max, MaxSizes, Result) ->
+ parse_headers(Rest, [Octet | Header], Headers, Current + 1, Max,
MaxSizes, Result).
whole_body(Body, Length) ->
@@ -326,6 +300,14 @@ validate_path([".." | Rest], N, RequestURI) ->
validate_path([_ | Rest], N, RequestURI) ->
validate_path(Rest, N + 1, RequestURI).
+validate_version("HTTP/1.1") ->
+ true;
+validate_version("HTTP/1.0") ->
+ true;
+validate_version("HTTP/0.9") ->
+ true;
+validate_version(_) ->
+ false.
%%----------------------------------------------------------------------
%% There are 3 possible forms of the reuqest URI
%%
@@ -430,3 +412,5 @@ tag([$:|Rest], Tag) ->
tag([Chr|Rest], Tag) ->
tag(Rest, [Chr|Tag]).
+lowest_version()->
+ "HTTP/0.9".
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 01:38:35 +0000