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-rw-r--r--lib/diameter/include/diameter_gen.hrl38
1 files changed, 31 insertions, 7 deletions
diff --git a/lib/diameter/include/diameter_gen.hrl b/lib/diameter/include/diameter_gen.hrl
index 97cf0c7e29..233eb8dd15 100644
--- a/lib/diameter/include/diameter_gen.hrl
+++ b/lib/diameter/include/diameter_gen.hrl
@@ -311,7 +311,9 @@ d(Name, Avp, Acc) ->
Failed = relax(Name), %% Not AvpName or else a failed Failed-AVP
%% decode is packed into 'AVP'.
- try avp(decode, Data, AvpName) of
+ Mod = dict(Failed), %% Dictionary to decode in.
+
+ try Mod:avp(decode, Data, AvpName) of
V ->
{Avps, T} = Acc,
{H, A} = ungroup(V, Avp),
@@ -324,6 +326,25 @@ d(Name, Avp, Acc) ->
reset(?FAILED_KEY, Failed)
end.
+%% dict/1
+%%
+%% Retrieve the dictionary for the best-effort decode of Failed-AVP,
+%% as put by diameter_codec:decode/2. See that function for the
+%% explanation.
+
+dict(true) ->
+ case get({diameter_codec, dictionary}) of
+ undefined ->
+ ?MODULE;
+ Mod ->
+ Mod
+ end;
+
+dict(_) ->
+ ?MODULE.
+
+%% d/5
+
%% Ignore a decode error within Failed-AVP ...
d(true, _, Name, Avp, Acc) ->
decode_AVP(Name, Avp, Acc);
@@ -341,6 +362,8 @@ d(false, Reason, Name, Avp, {Avps, Acc}) ->
{Rec, Failed} = Acc,
{[Avp|Avps], {Rec, [rc(Reason, Avp) | Failed]}}.
+%% relax/2
+
%% Set false in the process dictionary as soon as we see a Grouped AVP
%% that doesn't set the M-bit, so that is_strict() can say whether or
%% not to ignore the M-bit on an encapsulated AVP.
@@ -357,22 +380,23 @@ relax(_, _) ->
is_strict() ->
false /= getr(?STRICT_KEY).
+%% relax/1
+%%
%% Set true in the process dictionary as soon as we see Failed-AVP.
%% Matching on 'Failed-AVP' assumes that this is the RFC AVP.
%% Strictly, this doesn't need to be the case.
+
relax('Failed-AVP') ->
- case getr(?FAILED_KEY) of
- undefined ->
- putr(?FAILED_KEY, true);
- true = Yes ->
- Yes
- end;
+ is_failed() orelse putr(?FAILED_KEY, true);
+
relax(_) ->
is_failed().
is_failed() ->
true == getr(?FAILED_KEY).
+%% reset/2
+
reset(Key, undefined) ->
eraser(Key);
reset(_, _) ->