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-rw-r--r--lib/diameter/include/diameter_gen.hrl57
1 files changed, 47 insertions, 10 deletions
diff --git a/lib/diameter/include/diameter_gen.hrl b/lib/diameter/include/diameter_gen.hrl
index bc25f7d472..8272904856 100644
--- a/lib/diameter/include/diameter_gen.hrl
+++ b/lib/diameter/include/diameter_gen.hrl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2014. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2015. 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
@@ -25,6 +25,9 @@
-define(THROW(T), throw({?MODULE, T})).
+%% Tag common to generated dictionaries.
+-define(TAG, diameter_gen).
+
%% Key to a value in the process dictionary that determines whether or
%% not an unrecognized AVP setting the M-bit should be regarded as an
%% error or not. See is_strict/0.
@@ -48,13 +51,20 @@
%% dictionary.
putr(K,V) ->
- put({?MODULE, K}, V).
+ put({?TAG, K}, V).
getr(K) ->
- get({?MODULE, K}).
+ case get({?TAG, K}) of
+ undefined ->
+ V = erase({?MODULE, K}), %% written in old code
+ V == undefined orelse putr(K,V),
+ V;
+ V ->
+ V
+ end.
eraser(K) ->
- erase({?MODULE, K}).
+ erase({?TAG, K}).
%% ---------------------------------------------------------------------------
%% # encode_avps/2
@@ -313,12 +323,20 @@ d(Name, Avp, Acc) ->
%% decode is packed into 'AVP'.
Mod = dict(Failed), %% Dictionary to decode in.
+ %% On decode, a Grouped AVP is represented as a #diameter_avp{}
+ %% list with AVP as head and component AVPs as tail. On encode,
+ %% data can be a list of component AVPs.
+
try Mod:avp(decode, Data, AvpName) of
V ->
{Avps, T} = Acc,
{H, A} = ungroup(V, Avp),
{[H | Avps], pack_avp(Name, A, T)}
catch
+ throw: {?TAG, {grouped, RC, ComponentAvps}} ->
+ {Avps, {Rec, Errors}} = Acc,
+ A = trim(Avp),
+ {[[A | trim(ComponentAvps)] | Avps], {Rec, [{RC, A} | Errors]}};
error: Reason ->
d(undefined == Failed orelse is_failed(),
Reason,
@@ -338,6 +356,10 @@ d(Name, Avp, Acc) ->
trim(#diameter_avp{data = <<0:1, Bin/binary>>} = Avp) ->
Avp#diameter_avp{data = Bin};
+trim(Avps)
+ when is_list(Avps) ->
+ lists:map(fun trim/1, Avps);
+
trim(Avp) ->
Avp.
@@ -582,22 +604,37 @@ value(_, Avp) ->
%% # grouped_avp/3
%% ---------------------------------------------------------------------------
--spec grouped_avp(decode, avp_name(), binary())
+-spec grouped_avp(decode, avp_name(), bitstring())
-> {avp_record(), [avp()]};
(encode, avp_name(), avp_record() | avp_values())
-> binary()
| no_return().
+%% Length error induced by diameter_codec:collect_avps/1.
+grouped_avp(decode, _Name, <<0:1, _/binary>>) ->
+ throw({?TAG, {grouped, 5014, []}});
+
grouped_avp(decode, Name, Data) ->
- {Rec, Avps, []} = decode_avps(Name, diameter_codec:collect_avps(Data)),
- {Rec, Avps};
-%% A failed match here will result in 5004. Note that this is the only
-%% AVP type that doesn't just return the decoded record, also
-%% returning the list of component AVP's.
+ grouped_decode(Name, diameter_codec:collect_avps(Data));
grouped_avp(encode, Name, Data) ->
encode_avps(Name, Data).
+%% grouped_decode/2
+%%
+%% Note that Grouped is the only AVP type that doesn't just return a
+%% decoded value, also returning the list of component diameter_avp
+%% records.
+
+grouped_decode(_Name, {Error, Acc}) ->
+ {RC, Avp} = Error,
+ throw({?TAG, {grouped, RC, [Avp | Acc]}});
+
+grouped_decode(Name, ComponentAvps) ->
+ {Rec, Avps, Es} = decode_avps(Name, ComponentAvps),
+ [] == Es orelse throw({?TAG, {grouped, 5004, Avps}}), %% decode failure
+ {Rec, Avps}.
+
%% ---------------------------------------------------------------------------
%% # empty_group/1
%% ---------------------------------------------------------------------------