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authorAnders Svensson <[email protected]>2014-05-26 16:55:06 +0200
committerAnders Svensson <[email protected]>2014-05-26 17:14:23 +0200
commitda356f2e79b2cf5e767cb11cc643beab086e5263 (patch)
tree3ab903fa9bf8a441cedc2600c844fea2cb39a44c
parent2d5e6f4d438db1a480e44c539155e334c11851bc (diff)
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Add testcases that send unknown AVPs with a bad AVP Length
In particular, a length that points past the end of the message. This goes undetected there is some other problem with the AVP (eg. M-bit), which is a problem we're about to fix.
-rw-r--r--lib/diameter/test/diameter_traffic_SUITE.erl52
1 files changed, 50 insertions, 2 deletions
diff --git a/lib/diameter/test/diameter_traffic_SUITE.erl b/lib/diameter/test/diameter_traffic_SUITE.erl
index a97c54fc04..89592f02ef 100644
--- a/lib/diameter/test/diameter_traffic_SUITE.erl
+++ b/lib/diameter/test/diameter_traffic_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -43,7 +43,9 @@
send_protocol_error/1,
send_arbitrary/1,
send_unknown/1,
+ send_unknown_short/1,
send_unknown_mandatory/1,
+ send_unknown_short_mandatory/1,
send_noreply/1,
send_unsupported/1,
send_unsupported_app/1,
@@ -266,7 +268,9 @@ tc() ->
send_protocol_error,
send_arbitrary,
send_unknown,
+ send_unknown_short,
send_unknown_mandatory,
+ send_unknown_short_mandatory,
send_noreply,
send_unsupported,
send_unsupported_app,
@@ -447,6 +451,24 @@ send_unknown(Config) ->
data = <<17>>}]}
= lists:last(Avps).
+%% Ditto, and point the AVP length past the end of the message. Expect
+%% 5014.
+send_unknown_short(Config) ->
+ send_unknown_short(Config, false, ?INVALID_AVP_LENGTH).
+
+send_unknown_short(Config, M, RC) ->
+ Req = ['ASR', {'AVP', [#diameter_avp{code = 999,
+ is_mandatory = M,
+ data = <<17>>}]}],
+ ['ASA', _SessionId, {'Result-Code', RC} | Avps]
+ = call(Config, Req),
+ [#'diameter_base_Failed-AVP'{'AVP' = As}]
+ = proplists:get_value('Failed-AVP', Avps),
+ [#diameter_avp{code = 999,
+ is_mandatory = M,
+ data = <<17, _/binary>>}] %% extra bits from padding
+ = As.
+
%% Ditto but set the M flag.
send_unknown_mandatory(Config) ->
Req = ['ASR', {'AVP', [#diameter_avp{code = 999,
@@ -461,6 +483,11 @@ send_unknown_mandatory(Config) ->
data = <<17>>}]
= As.
+%% Ditto, and point the AVP length past the end of the message. Expect
+%% 5014 instead of 5001.
+send_unknown_short_mandatory(Config) ->
+ send_unknown_short(Config, true, ?INVALID_AVP_LENGTH).
+
%% Send an STR that the server ignores.
send_noreply(Config) ->
Req = ['STR', {'Termination-Cause', ?BAD_ANSWER}],
@@ -836,6 +863,26 @@ log(#diameter_packet{bin = Bin} = P, T)
%% prepare/4
prepare(Pkt, Caps, N, #group{client_dict0 = Dict0} = Group)
+ when N == send_unknown_short_mandatory;
+ N == send_unknown_short ->
+ Req = prepare(Pkt, Caps, Group),
+
+ #diameter_packet{header = #diameter_header{length = L},
+ bin = Bin}
+ = E
+ = diameter_codec:encode(Dict0, Pkt#diameter_packet{msg = Req}),
+
+ %% Find the unknown AVP data at the end of the message and alter
+ %% its length header.
+
+ {Padding, [17|_]} = lists:splitwith(fun(C) -> C == 0 end,
+ lists:reverse(binary_to_list(Bin))),
+
+ Offset = L - length(Padding) - 4,
+ <<H:Offset/binary, Len:24, T/binary>> = Bin,
+ E#diameter_packet{bin = <<H/binary, (Len+9):24, T/binary>>};
+
+prepare(Pkt, Caps, N, #group{client_dict0 = Dict0} = Group)
when N == send_long_avp_length;
N == send_short_avp_length;
N == send_zero_avp_length ->
@@ -997,7 +1044,8 @@ answer(Rec, [_|_], N)
N == send_short_avp_length;
N == send_zero_avp_length;
N == send_invalid_avp_length;
- N == send_invalid_reject ->
+ N == send_invalid_reject;
+ N == send_unknown_short_mandatory ->
Rec;
answer(Rec, [], _) ->
Rec.