From 4eeeca1538afecc294e04c50c5f6a4551eced9ec Mon Sep 17 00:00:00 2001 From: Ingela Anderton Andin Date: Tue, 27 Jan 2015 17:00:28 +0100 Subject: inets: httpd - Sanity check of content-length header Gracefully handle invalid content-lenght headers instead of crashing in list_to_integer. --- lib/inets/doc/src/httpd.xml | 13 ++- lib/inets/src/http_lib/http_internal.hrl | 3 +- lib/inets/src/http_lib/http_request.erl | 26 ++++-- lib/inets/src/http_server/httpd_conf.erl | 20 ++-- lib/inets/src/http_server/httpd_request.erl | 102 ++++++++++++--------- .../src/http_server/httpd_request_handler.erl | 27 ++++-- lib/inets/test/http_format_SUITE.erl | 16 +++- lib/inets/test/httpc_SUITE.erl | 31 ++++--- lib/inets/test/httpd_SUITE.erl | 45 +++++++-- 9 files changed, 188 insertions(+), 95 deletions(-) (limited to 'lib') diff --git a/lib/inets/doc/src/httpd.xml b/lib/inets/doc/src/httpd.xml index 4ca038cc99..20c8a6b1b1 100644 --- a/lib/inets/doc/src/httpd.xml +++ b/lib/inets/doc/src/httpd.xml @@ -4,7 +4,7 @@
- 19972013 + 19972015 Ericsson AB. All Rights Reserved. @@ -249,7 +249,16 @@

Limits the size of the message header of HTTP request. Defaults to 10240.

- + + + {max_content_length, integer()} + +

Maximum Content-Length in an incoming request, in bytes. Requests + with content larger than this are answered with Status 413. + Defaults to 100000000 (100 MB). +

+ + {max_uri_size, integer()} diff --git a/lib/inets/src/http_lib/http_internal.hrl b/lib/inets/src/http_lib/http_internal.hrl index 53b776c4e7..54425740b5 100644 --- a/lib/inets/src/http_lib/http_internal.hrl +++ b/lib/inets/src/http_lib/http_internal.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2002-2014. All Rights Reserved. +%% Copyright Ericsson AB 2002-2015. 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 @@ -28,6 +28,7 @@ -define(HTTP_MAX_URI_SIZE, nolimit). -define(HTTP_MAX_VERSION_STRING, 8). -define(HTTP_MAX_METHOD_STRING, 20). +-define(HTTP_MAX_CONTENT_LENGTH, 100000000). -ifndef(HTTP_DEFAULT_SSL_KIND). -define(HTTP_DEFAULT_SSL_KIND, essl). diff --git a/lib/inets/src/http_lib/http_request.erl b/lib/inets/src/http_lib/http_request.erl index f295453bdd..a0833ddf01 100644 --- a/lib/inets/src/http_lib/http_request.erl +++ b/lib/inets/src/http_lib/http_request.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2014. All Rights Reserved. +%% Copyright Ericsson AB 2005-2015. 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 @@ -21,8 +21,16 @@ -include("http_internal.hrl"). --export([headers/2, http_headers/1, is_absolut_uri/1]). +-export([headers/2, http_headers/1, is_absolut_uri/1, key_value/1]). + +key_value(KeyValueStr) -> + case lists:splitwith(fun($:) -> false; (_) -> true end, KeyValueStr) of + {Key, [$: | Value]} -> + {http_util:to_lower(string:strip(Key)), string:strip(Value)}; + {_, []} -> + undefined + end. %%------------------------------------------------------------------------- %% headers(HeaderList, #http_request_h{}) -> #http_request_h{} %% HeaderList - ["HeaderField:Value"] @@ -34,14 +42,12 @@ %%------------------------------------------------------------------------- headers([], Headers) -> Headers; -headers([Header | Tail], Headers) -> - case lists:splitwith(fun($:) -> false; (_) -> true end, Header) of - {Key, [$: | Value]} -> - headers(Tail, headers(http_util:to_lower(string:strip(Key)), - string:strip(Value), Headers)); - {_, []} -> - headers(Tail, Headers) - end. +headers([{Key, Value} | Tail], Headers) -> + headers(Tail, headers(Key, Value, Headers)); +headers([undefined], Headers) -> + Headers; +headers(KeyValues, Headers) -> + headers([key_value(KeyValue) || KeyValue <- KeyValues], Headers). %%------------------------------------------------------------------------- %% headers(#http_request_h{}) -> HeaderList diff --git a/lib/inets/src/http_server/httpd_conf.erl b/lib/inets/src/http_server/httpd_conf.erl index 27446ca7fe..fa639b0a1c 100644 --- a/lib/inets/src/http_server/httpd_conf.erl +++ b/lib/inets/src/http_server/httpd_conf.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2013. All Rights Reserved. +%% Copyright Ericsson AB 1997-2015. 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 @@ -205,13 +205,13 @@ load("MaxURISize " ++ MaxHeaderSize, []) -> " is an invalid number of MaxHeaderSize")} end; -load("MaxBodySize " ++ MaxBodySize, []) -> - case make_integer(MaxBodySize) of +load("MaxContentLength " ++ Max, []) -> + case make_integer(Max) of {ok, Integer} -> - {ok, [], {max_body_size,Integer}}; + {ok, [], {max_content_length, Integer}}; {error, _} -> - {error, ?NICE(clean(MaxBodySize) ++ - " is an invalid number of MaxBodySize")} + {error, ?NICE(clean(Max) ++ + " is an invalid number of MaxContentLength")} end; load("ServerName " ++ ServerName, []) -> @@ -569,6 +569,12 @@ validate_config_params([{max_body_size, Value} | Rest]) validate_config_params([{max_body_size, Value} | _]) -> throw({max_body_size, Value}); +validate_config_params([{max_content_length, Value} | Rest]) + when is_integer(Value) andalso (Value > 0) -> + validate_config_params(Rest); +validate_config_params([{max_content_length, Value} | _]) -> + throw({max_content_length, Value}); + validate_config_params([{server_name, Value} | Rest]) when is_list(Value) -> validate_config_params(Rest); @@ -635,7 +641,7 @@ validate_config_params([{max_keep_alive_request, Value} | Rest]) when is_integer(Value) andalso (Value > 0) -> validate_config_params(Rest); validate_config_params([{max_keep_alive_request, Value} | _]) -> - throw({max_header_size, Value}); + throw({max_keep_alive_request, Value}); validate_config_params([{keep_alive_timeout, Value} | Rest]) when is_integer(Value) andalso (Value >= 0) -> diff --git a/lib/inets/src/http_server/httpd_request.erl b/lib/inets/src/http_server/httpd_request.erl index 712c73599f..6985065c3e 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 2005-2014. All Rights Reserved. +%% Copyright Ericsson AB 2005-2015. 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 @@ -118,18 +118,17 @@ validate(Method, Uri, Version) -> %% create it. %% ---------------------------------------------------------------------- update_mod_data(ModData, Method, RequestURI, HTTPVersion, Headers)-> - ParsedHeaders = tagup_header(Headers), - PersistentConn = get_persistens(HTTPVersion, ParsedHeaders, + PersistentConn = get_persistens(HTTPVersion, Headers, ModData#mod.config_db), {ok, ModData#mod{data = [], method = Method, absolute_uri = format_absolute_uri(RequestURI, - ParsedHeaders), + Headers), request_uri = format_request_uri(RequestURI), http_version = HTTPVersion, request_line = Method ++ " " ++ RequestURI ++ " " ++ HTTPVersion, - parsed_header = ParsedHeaders, + parsed_header = Headers, connection = PersistentConn}}. %%%======================================================================== @@ -146,14 +145,14 @@ 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()}. + {error, {size_error, 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. - {error, {too_long, MaxURI, 414, "URI unreasonably long"},lowest_version()}; + {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(<>, URI, _, _, MaxSizes, Result) -> @@ -179,12 +178,12 @@ parse_version(<> = Data, Version, Current, Max, MaxSizes, Result) -> parse_version(<>, 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()}. + {error, {size_error, 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, {too_long, Max, 413, "Headers unreasonably long"}, HttpVersion}; + {error, {size_error, Max, 413, "Headers unreasonably long"}, HttpVersion}; parse_headers(<<>>, Header, Headers, Current, Max, MaxSizes, Result) -> {?MODULE, parse_headers, [<<>>, Header, Headers, Current, Max, @@ -204,14 +203,22 @@ parse_headers(<>, [], [], _, _, _, Result) -> Result])), {ok, NewResult}; parse_headers(<>, Header, Headers, _, _, - _, Result) -> - HTTPHeaders = [lists:reverse(Header) | Headers], - RequestHeaderRcord = - http_request:headers(HTTPHeaders, #http_request_h{}), - NewResult = - list_to_tuple(lists:reverse([Body, {RequestHeaderRcord, - HTTPHeaders} | Result])), - {ok, NewResult}; + MaxSizes, Result) -> + 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]))}; + NewHeader -> + case check_header(NewHeader, MaxSizes) of + ok -> + {ok, list_to_tuple(lists:reverse([Body, {http_request:headers([NewHeader | Headers], + #http_request_h{}), + [NewHeader | Headers]} | Result]))}; + + {error, Reason} -> + HttpVersion = lists:nth(3, lists:reverse(Result)), + {error, Reason, HttpVersion} + end + end; parse_headers(<> = Data, Header, Headers, Current, Max, MaxSizes, Result) -> @@ -243,8 +250,21 @@ parse_headers(<>, Header, Headers, Current, Max, MaxSizes, Result); parse_headers(<>, Header, Headers, _, Max, MaxSizes, Result) -> - parse_headers(Rest, [Octet], [lists:reverse(Header) | Headers], - 0, Max, MaxSizes, Result); + case http_request:key_value(lists:reverse(Header)) of + undefined -> %% Skip headers with missing : + parse_headers(Rest, [Octet], Headers, + 0, Max, MaxSizes, Result); + NewHeader -> + case check_header(NewHeader, MaxSizes) of + ok -> + parse_headers(Rest, [Octet], [NewHeader | Headers], + 0, Max, MaxSizes, Result); + {error, Reason} -> + HttpVersion = lists:nth(3, lists:reverse(Result)), + {error, Reason, HttpVersion} + end + end; + parse_headers(<> = Data, Header, Headers, Current, Max, MaxSizes, Result) -> {?MODULE, parse_headers, [Data, Header, Headers, Current, Max, @@ -388,29 +408,25 @@ get_persistens(HTTPVersion,ParsedHeader,ConfigDB)-> false end. - -%%---------------------------------------------------------------------- -%% tagup_header -%% -%% Parses the header of a HTTP request and returns a key,value tuple -%% list containing Name and Value of each header directive as of: -%% -%% Content-Type: multipart/mixed -> {"Content-Type", "multipart/mixed"} -%% -%% But in http/1.1 the field-names are case insencitive so now it must be -%% Content-Type: multipart/mixed -> {"content-type", "multipart/mixed"} -%% The standard furthermore says that leading and traling white space -%% is not a part of the fieldvalue and shall therefore be removed. -%%---------------------------------------------------------------------- -tagup_header([]) -> []; -tagup_header([Line|Rest]) -> [tag(Line, [])|tagup_header(Rest)]. - -tag([], Tag) -> - {http_util:to_lower(lists:reverse(Tag)), ""}; -tag([$:|Rest], Tag) -> - {http_util:to_lower(lists:reverse(Tag)), string:strip(Rest)}; -tag([Chr|Rest], Tag) -> - tag(Rest, [Chr|Tag]). - lowest_version()-> "HTTP/0.9". + +check_header({"content-length", Value}, Maxsizes) -> + Max = proplists:get_value(max_content_length, Maxsizes), + MaxLen = length(integer_to_list(Max)), + case length(Value) =< MaxLen of + true -> + try + _ = list_to_integer(Value), + ok + catch _:_ -> + {error, {size_error, Max, 411, "content-length not an integer"}} + end; + false -> + {error, {size_error, Max, 413, "content-length unreasonably long"}} + end; +check_header(_, _) -> + ok. + + + diff --git a/lib/inets/src/http_server/httpd_request_handler.erl b/lib/inets/src/http_server/httpd_request_handler.erl index 9bea58cc9e..89ccec52cc 100644 --- a/lib/inets/src/http_server/httpd_request_handler.erl +++ b/lib/inets/src/http_server/httpd_request_handler.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2014. All Rights Reserved. +%% Copyright Ericsson AB 1997-2015. 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 @@ -119,11 +119,15 @@ continue_init(Manager, ConfigDB, SocketType, Socket, TimeOut) -> MaxHeaderSize = max_header_size(ConfigDB), MaxURISize = max_uri_size(ConfigDB), NrOfRequest = max_keep_alive_request(ConfigDB), - + MaxContentLen = max_content_length(ConfigDB), + {_, Status} = httpd_manager:new_connection(Manager), MFA = {httpd_request, parse, [[{max_uri, MaxURISize}, {max_header, MaxHeaderSize}, - {max_version, ?HTTP_MAX_VERSION_STRING}, {max_method, ?HTTP_MAX_METHOD_STRING}]]}, + {max_version, ?HTTP_MAX_VERSION_STRING}, + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, MaxContentLen} + ]]}, State = #state{mod = Mod, manager = Manager, @@ -207,7 +211,7 @@ handle_info({Proto, Socket, Data}, set_new_data_size(cancel_request_timeout(State), NewDataSize) end, handle_http_msg(Result, NewState); - {error, {too_long, MaxSize, ErrCode, ErrStr}, Version} -> + {error, {size_error, MaxSize, ErrCode, ErrStr}, Version} -> NewModData = ModData#mod{http_version = Version}, httpd_response:send_status(NewModData, ErrCode, ErrStr), Reason = io_lib:format("~p: ~p max size is ~p~n", @@ -444,8 +448,7 @@ handle_body(#state{headers = Headers, body = Body, mod = ModData} = State, error_log(Reason, ModData), {stop, normal, State#state{response_sent = true}}; _ -> - Length = - list_to_integer(Headers#http_request_h.'content-length'), + Length = list_to_integer(Headers#http_request_h.'content-length'), case ((Length =< MaxBodySize) or (MaxBodySize == nolimit)) of true -> case httpd_request:whole_body(Body, Length) of @@ -454,7 +457,7 @@ handle_body(#state{headers = Headers, body = Body, mod = ModData} = State, ModData#mod.socket, [{active, once}]), {noreply, State#state{mfa = - {Module, Function, Args}}}; + {Module, Function, Args}}}; {ok, NewBody} -> handle_response( @@ -471,7 +474,7 @@ handle_body(#state{headers = Headers, body = Body, mod = ModData} = State, handle_expect(#state{headers = Headers, mod = #mod{config_db = ConfigDB} = ModData} = State, MaxBodySize) -> - Length = Headers#http_request_h.'content-length', + Length = list_to_integer(Headers#http_request_h.'content-length'), case expect(Headers, ModData#mod.http_version, ConfigDB) of continue when (MaxBodySize > Length) orelse (MaxBodySize =:= nolimit) -> httpd_response:send_status(ModData, 100, ""), @@ -545,9 +548,13 @@ handle_next_request(#state{mod = #mod{connection = true} = ModData, init_data = ModData#mod.init_data}, MaxHeaderSize = max_header_size(ModData#mod.config_db), MaxURISize = max_uri_size(ModData#mod.config_db), + MaxContentLen = max_content_length(ModData#mod.config_db), MFA = {httpd_request, parse, [[{max_uri, MaxURISize}, {max_header, MaxHeaderSize}, - {max_version, ?HTTP_MAX_VERSION_STRING}, {max_method, ?HTTP_MAX_METHOD_STRING}]]}, + {max_version, ?HTTP_MAX_VERSION_STRING}, + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, MaxContentLen} + ]]}, TmpState = State#state{mod = NewModData, mfa = MFA, max_keep_alive_request = decrease(Max), @@ -630,3 +637,5 @@ max_body_size(ConfigDB) -> max_keep_alive_request(ConfigDB) -> httpd_util:lookup(ConfigDB, max_keep_alive_request, infinity). +max_content_length(ConfigDB) -> + httpd_util:lookup(ConfigDB, max_content_length, ?HTTP_MAX_CONTENT_LENGTH). diff --git a/lib/inets/test/http_format_SUITE.erl b/lib/inets/test/http_format_SUITE.erl index d4a3f28f38..5952e9fd6e 100644 --- a/lib/inets/test/http_format_SUITE.erl +++ b/lib/inets/test/http_format_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2014. All Rights Reserved. +%% Copyright Ericsson AB 2004-2015. 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 @@ -355,10 +355,12 @@ http_request(Config) when is_list(Config) -> "http://www.erlang.org", "HTTP/1.1", {#http_request_h{host = "www.erlang.org", te = []}, - ["te: ","host:www.erlang.org"]}, <<>>} = + [{"te", []}, {"host", "www.erlang.org"}]}, <<>>} = parse(httpd_request, parse, [[{max_header, ?HTTP_MAX_HEADER_SIZE}, {max_version, ?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]], + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH} + ]], HttpHead), HttpHead1 = ["GET http://www.erlang.org HTTP/1.1" ++ @@ -369,7 +371,9 @@ http_request(Config) when is_list(Config) -> {#http_request_h{}, []}, <<>>} = parse(httpd_request, parse, [[{max_header, ?HTTP_MAX_HEADER_SIZE}, {max_version, ?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]], HttpHead1), + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH} + ]], HttpHead1), HttpHead2 = ["GET http://www.erlang.org HTTP/1.1" ++ @@ -380,7 +384,9 @@ http_request(Config) when is_list(Config) -> {#http_request_h{}, []}, <<>>} = parse(httpd_request, parse, [[{max_header, ?HTTP_MAX_HEADER_SIZE}, {max_version, ?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]], HttpHead2), + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH} + ]], HttpHead2), %% Note the following body is not related to the headers above HttpBody = ["\n\n dummy \n\n\n", diff --git a/lib/inets/test/httpc_SUITE.erl b/lib/inets/test/httpc_SUITE.erl index c535d59b9f..390f2bb464 100644 --- a/lib/inets/test/httpc_SUITE.erl +++ b/lib/inets/test/httpc_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2014. All Rights Reserved. +%% Copyright Ericsson AB 2004-2015. 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 @@ -1246,8 +1246,9 @@ dummy_server_init(Caller, ip_comm, Inet, _) -> dummy_ipcomm_server_loop({httpd_request, parse, [[{max_uri, ?HTTP_MAX_URI_SIZE}, {max_header, ?HTTP_MAX_HEADER_SIZE}, {max_version,?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]]}, - [], ListenSocket); + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH}]]}, + [], ListenSocket); dummy_server_init(Caller, ssl, Inet, SSLOptions) -> BaseOpts = [binary, {reuseaddr,true}, {active, false} | @@ -1261,7 +1262,9 @@ dummy_ssl_server_init(Caller, BaseOpts, Inet) -> dummy_ssl_server_loop({httpd_request, parse, [[{max_uri, ?HTTP_MAX_URI_SIZE}, {max_method, ?HTTP_MAX_METHOD_STRING}, {max_version,?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]]}, + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH} + ]]}, [], ListenSocket). dummy_ipcomm_server_loop(MFA, Handlers, ListenSocket) -> @@ -1338,16 +1341,20 @@ handle_request(Module, Function, Args, Socket) -> stop -> stop; <<>> -> - {httpd_request, parse, [[<<>>, [{max_uri, ?HTTP_MAX_URI_SIZE}, + {httpd_request, parse, [[{max_uri,?HTTP_MAX_URI_SIZE}, {max_header, ?HTTP_MAX_HEADER_SIZE}, {max_version,?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]]]}; + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH} + ]]}; Data -> handle_request(httpd_request, parse, [Data, [{max_uri, ?HTTP_MAX_URI_SIZE}, - {max_header, ?HTTP_MAX_HEADER_SIZE}, - {max_version,?HTTP_MAX_VERSION_STRING}, - {max_method, ?HTTP_MAX_METHOD_STRING}]], Socket) + {max_header, ?HTTP_MAX_HEADER_SIZE}, + {max_version,?HTTP_MAX_VERSION_STRING}, + {max_method, ?HTTP_MAX_METHOD_STRING}, + {max_content_length, ?HTTP_MAX_CONTENT_LENGTH} + ]], Socket) end; NewMFA -> NewMFA @@ -1437,7 +1444,7 @@ dummy_ssl_server_hang_loop(_) -> ensure_host_header_with_port([]) -> false; -ensure_host_header_with_port(["host: " ++ Host| _]) -> +ensure_host_header_with_port([{"host", Host}| _]) -> case string:tokens(Host, [$:]) of [_ActualHost, _Port] -> true; @@ -1449,7 +1456,7 @@ ensure_host_header_with_port([_|T]) -> auth_header([]) -> auth_header_not_found; -auth_header(["authorization:" ++ Value | _]) -> +auth_header([{"authorization", Value} | _]) -> {ok, string:strip(Value)}; auth_header([_ | Tail]) -> auth_header(Tail). @@ -1466,7 +1473,7 @@ handle_auth("Basic " ++ UserInfo, Challange, DefaultResponse) -> check_cookie([]) -> ct:fail(no_cookie_header); -check_cookie(["cookie:" ++ _Value | _]) -> +check_cookie([{"cookie", _} | _]) -> ok; check_cookie([_Head | Tail]) -> check_cookie(Tail). diff --git a/lib/inets/test/httpd_SUITE.erl b/lib/inets/test/httpd_SUITE.erl index 4010597657..342004f19b 100644 --- a/lib/inets/test/httpd_SUITE.erl +++ b/lib/inets/test/httpd_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013-2014. All Rights Reserved. +%% Copyright Ericsson AB 2013-2015. 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 @@ -132,6 +132,7 @@ http_get() -> bad_hex, missing_CR, max_header, + max_content_length, ipv6 ]. @@ -979,12 +980,21 @@ max_header(Config) when is_list(Config) -> Host = ?config(host, Config), case Version of "HTTP/0.9" -> - {skip, no_implemented}; + {skip, not_implemented}; _ -> dos_hostname(?config(type, Config), ?config(port, Config), Host, ?config(node, Config), Version, ?MAX_HEADER_SIZE) end. +%%------------------------------------------------------------------------- +max_content_length() -> + ["Denial Of Service (DOS) attack, prevented by max_content_length"]. +max_content_length(Config) when is_list(Config) -> + Version = ?config(http_version, Config), + Host = ?config(host, Config), + garbage_content_length(?config(type, Config), ?config(port, Config), Host, + ?config(node, Config), Version). + %%------------------------------------------------------------------------- security_1_1(Config) when is_list(Config) -> security([{http_version, "HTTP/1.1"} | Config]). @@ -1368,7 +1378,9 @@ server_config(http_reload, Config) -> server_config(https_reload, Config) -> [{keep_alive_timeout, 2}] ++ server_config(https, Config); server_config(http_limit, Config) -> - [{max_clients, 1}] ++ server_config(http, Config); + [{max_clients, 1}, + %% Make sure option checking code is run + {max_content_length, 100000002}] ++ server_config(http, Config); server_config(https_limit, Config) -> [{max_clients, 1}] ++ server_config(https, Config); server_config(http_basic_auth, Config) -> @@ -1814,7 +1826,7 @@ dos_hostname(Type, Port, Host, Node, Version, Max) -> ok = httpd_test_lib:verify_request(Type, Host, Port, Node, dos_hostname_request(TooLongHeader, Version), - [{statuscode, dos_code(Version)}, + [{statuscode, request_entity_too_large_code(Version)}, {version, Version}]). dos_hostname_request(Host, Version) -> dos_http_request("GET / ", Version, Host). @@ -1824,11 +1836,32 @@ dos_http_request(Request, "HTTP/1.1" = Version, Host) -> dos_http_request(Request, Version, Host) -> Request ++ Version ++ "\r\nhost:" ++ Host ++ "\r\n\r\n". -dos_code("HTTP/1.0") -> +request_entity_too_large_code("HTTP/1.0") -> 403; %% 413 not defined in HTTP/1.0 -dos_code(_) -> +request_entity_too_large_code(_) -> 413. +length_required_code("HTTP/1.0") -> + 403; %% 411 not defined in HTTP/1.0 +length_required_code(_) -> + 411. + +garbage_content_length(Type, Port, Host, Node, Version) -> + ok = httpd_test_lib:verify_request(Type, Host, Port, Node, + garbage_content_length_request("GET / ", Version, Host, "aaaa"), + [{statuscode, length_required_code(Version)}, + {version, Version}]), + ok = httpd_test_lib:verify_request(Type, Host, Port, Node, + garbage_content_length_request("GET / ", Version, Host, + lists:duplicate($a, 100)), + [{statuscode, request_entity_too_large_code(Version)}, + {version, Version}]). + +garbage_content_length_request(Request, Version, Host, Garbage) -> + http_request(Request, Version, Host, + {"content-length:" ++ Garbage, "Body with garbage content length indicator"}). + + update_password(Node, ServerRoot, _Address, Port, AuthPrefix, Dir, Old, New)-> Directory = filename:join([ServerRoot, "htdocs", AuthPrefix ++ Dir]), rpc:call(Node, mod_auth, update_password, -- cgit v1.2.3