From f8e1d4c5fe8bc67cac092e5cb45457d223172f2a Mon Sep 17 00:00:00 2001 From: Anders Svensson Date: Wed, 24 Jun 2015 13:45:19 +0200 Subject: Fix relay encode of decoded diameter_avp lists MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit c74b593a fixed the problem that a decoded deep diameter_avp list couldn't be encoded, but did so in the wrong way: there's no need to reencode component AVPs since the Grouped AVP itself already contains the encoded binary. The blunder caused diameter_codec:pack_avp/1 to fail if the first element of the AVP list to be encoded was itself a list. Thanks to Andrzej Trawiński for reporting the problem. --- lib/diameter/src/base/diameter_codec.erl | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) (limited to 'lib/diameter/src') diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl index bf2fe8e7ca..2ad971a422 100644 --- a/lib/diameter/src/base/diameter_codec.erl +++ b/lib/diameter/src/base/diameter_codec.erl @@ -655,16 +655,23 @@ split_data(Bin, Len) -> %% The normal case here is data as an #diameter_avp{} list or an %% iolist, which are the cases that generated codec modules use. The -%% other case is as a convenience in the relay case in which the +%% other cases are a convenience in the relay case in which the %% dictionary doesn't know about specific AVP's. -%% Grouped AVP whose components need packing ... -pack_avp([#diameter_avp{} = A | Avps]) -> - pack_avp(A#diameter_avp{data = Avps}); -pack_avp(#diameter_avp{data = [#diameter_avp{} | _] = Avps} = A) -> - pack_avp(A#diameter_avp{data = encode_avps(Avps)}); +%% Decoded Grouped AVP with decoded components: ignore components +%% since they're already encoded in the Grouped AVP. +pack_avp([#diameter_avp{} = Grouped | _Components]) -> + pack_avp(Grouped); -%% ... data as a type/value tuple ... +%% Grouped AVP whose components need packing. It's intentional that +%% this isn't equivalent to [Grouped | Components]: here the +%% components need to be encoded before wrapping with the Grouped AVP, +%% and the list is flat, nesting being accomplished in the data +%% fields. +pack_avp(#diameter_avp{data = [#diameter_avp{} | _] = Components} = Grouped) -> + pack_avp(Grouped#diameter_avp{data = encode_avps(Components)}); + +%% Data as a type/value tuple ... pack_avp(#diameter_avp{data = {Type, Value}} = A) when is_atom(Type) -> pack_avp(A#diameter_avp{data = diameter_types:Type(encode, Value)}); -- cgit v1.2.3