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-rw-r--r--lib/diameter/src/base/diameter.erl1
-rw-r--r--lib/diameter/src/base/diameter_codec.erl4
-rw-r--r--lib/diameter/src/base/diameter_config.erl3
-rw-r--r--lib/diameter/src/base/diameter_gen.erl247
-rw-r--r--lib/diameter/src/base/diameter_service.erl5
-rw-r--r--lib/diameter/src/base/diameter_traffic.erl4
6 files changed, 176 insertions, 88 deletions
diff --git a/lib/diameter/src/base/diameter.erl b/lib/diameter/src/base/diameter.erl
index 69ef6f4ec0..b90b794611 100644
--- a/lib/diameter/src/base/diameter.erl
+++ b/lib/diameter/src/base/diameter.erl
@@ -356,6 +356,7 @@ call(SvcName, App, Message) ->
| {capx_timeout, 'Unsigned32'()}
| {strict_capx, boolean()}
| {strict_mbit, boolean()}
+ | {avp_dictionaries, [module()]}
| {disconnect_cb, eval()}
| {dpr_timeout, 'Unsigned32'()}
| {dpa_timeout, 'Unsigned32'()}
diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl
index 4f024f9947..2dd2c906a2 100644
--- a/lib/diameter/src/base/diameter_codec.erl
+++ b/lib/diameter/src/base/diameter_codec.erl
@@ -614,8 +614,8 @@ pack_avp(#diameter_avp{data = {T, {Type, Value}}}, Opts) ->
pack_avp(#diameter_avp{data = {T, Data}}, _) ->
pack_data(T, Data);
-pack_avp(#diameter_avp{data = {Dict, Name, Data}}, Opts) ->
- pack_data(Dict:avp_header(Name), Dict:avp(encode, Data, Name, Opts));
+pack_avp(#diameter_avp{data = {Dict, Name, Value}}, Opts) ->
+ pack_data(Dict:avp_header(Name), Dict:avp(encode, Value, Name, Opts));
%% ... with a truncated header ...
pack_avp(#diameter_avp{code = undefined, data = B}, _)
diff --git a/lib/diameter/src/base/diameter_config.erl b/lib/diameter/src/base/diameter_config.erl
index 284f885884..90a9282349 100644
--- a/lib/diameter/src/base/diameter_config.erl
+++ b/lib/diameter/src/base/diameter_config.erl
@@ -682,6 +682,9 @@ opt(_, {K, B})
K == strict_mbit ->
is_boolean(B);
+opt(_, {avp_dictionaries, Mods}) ->
+ is_list(Mods) andalso lists:all(fun erlang:is_atom/1, Mods);
+
opt(_, {length_errors, T}) ->
lists:member(T, [exit, handle, discard]);
diff --git a/lib/diameter/src/base/diameter_gen.erl b/lib/diameter/src/base/diameter_gen.erl
index 1c699f6be6..6add06ea38 100644
--- a/lib/diameter/src/base/diameter_gen.erl
+++ b/lib/diameter/src/base/diameter_gen.erl
@@ -100,73 +100,73 @@ encode(Name, Vals, Opts, Strict, Mod)
encode(Name, Map, Opts, Strict, Mod)
when is_map(Map) ->
- [enc(Name, F, A, V, Opts, Strict, Mod) || {F,A} <- Mod:avp_arity(Name),
- V <- [mget(F, Map, undefined)]];
+ [enc(F, A, V, Opts, Strict, Mod) || {F,A} <- Mod:avp_arity(Name),
+ V <- [mget(F, Map, undefined)]];
encode(Name, Rec, Opts, Strict, Mod) ->
[encode(Name, F, V, Opts, Strict, Mod) || {F,V} <- Mod:'#get-'(Rec)].
%% encode/6
-encode(Name, AvpName, Values, Opts, Strict, Mod)
+encode(_, AvpName, Values, Opts, Strict, Mod)
when Strict /= encode ->
- enc(Name, AvpName, ?ANY, Values, Opts, Strict, Mod);
+ enc(AvpName, ?ANY, Values, Opts, Strict, Mod);
encode(Name, AvpName, Values, Opts, Strict, Mod) ->
Arity = Mod:avp_arity(Name, AvpName),
- enc(Name, AvpName, Arity, Values, Opts, Strict, Mod).
+ enc(AvpName, Arity, Values, Opts, Strict, Mod).
-%% enc/7
+%% enc/6
-enc(Name, AvpName, Arity, Values, Opts, Strict, Mod)
+enc(AvpName, Arity, Values, Opts, Strict, Mod)
when Strict /= encode, Arity /= ?ANY ->
- enc(Name, AvpName, ?ANY, Values, Opts, Strict, Mod);
+ enc(AvpName, ?ANY, Values, Opts, Strict, Mod);
-enc(_, AvpName, 1, undefined, _, _, _) ->
+enc(AvpName, 1, undefined, _, _, _) ->
?THROW([mandatory_avp_missing, AvpName]);
-enc(Name, AvpName, 1, Value, Opts, _, Mod) ->
+enc(AvpName, 1, Value, Opts, _, Mod) ->
H = avp_header(AvpName, Mod),
- enc1(Name, AvpName, H, Value, Opts, Mod);
+ enc(AvpName, H, Value, Opts, Mod);
-enc(_, _, {0,_}, [], _, _, _) ->
+enc(_, {0,_}, [], _, _, _) ->
[];
-enc(_, _, _, undefined, _, _, _) ->
+enc(_, _, undefined, _, _, _) ->
[];
%% Be forgiving when a list of values is expected. If the value itself
%% is a list then the user has to wrap it to avoid each member from
%% being interpreted as an individual AVP value.
-enc(Name, AvpName, Arity, V, Opts, Strict, Mod)
+enc(AvpName, Arity, V, Opts, Strict, Mod)
when not is_list(V) ->
- enc(Name, AvpName, Arity, [V], Opts, Strict, Mod);
+ enc(AvpName, Arity, [V], Opts, Strict, Mod);
-enc(Name, AvpName, {Min, Max}, Values, Opts, Strict, Mod) ->
+enc(AvpName, {Min, Max}, Values, Opts, Strict, Mod) ->
H = avp_header(AvpName, Mod),
- enc(Name, AvpName, H, Min, 0, Max, Values, Opts, Strict, Mod).
+ enc(AvpName, H, Min, 0, Max, Values, Opts, Strict, Mod).
-%% enc/10
+%% enc/9
-enc(Name, AvpName, H, Min, N, Max, Vs, Opts, Strict, Mod)
+enc(AvpName, H, Min, N, Max, Vs, Opts, Strict, Mod)
when Strict /= encode;
Max == '*', Min =< N ->
- [enc1(Name, AvpName, H, V, Opts, Mod) || V <- Vs];
+ [enc(AvpName, H, V, Opts, Mod) || V <- Vs];
-enc(_, AvpName, _, Min, N, _, [], _, _, _)
+enc(AvpName, _, Min, N, _, [], _, _, _)
when N < Min ->
?THROW([repeated_avp_insufficient_arity, AvpName, Min, N]);
-enc(_, _, _, _, _, _, [], _, _, _) ->
+enc(_, _, _, _, _, [], _, _, _) ->
[];
-enc(_, AvpName, _, _, N, Max, _, _, _, _)
+enc(AvpName, _, _, N, Max, _, _, _, _)
when Max =< N ->
?THROW([repeated_avp_excessive_arity, AvpName, Max]);
-enc(Name, AvpName, H, Min, N, Max, [V|Vs], Opts, Strict, Mod) ->
- [enc1(Name, AvpName, H, V, Opts, Mod)
- | enc(Name, AvpName, H, Min, N+1, Max, Vs, Opts, Strict, Mod)].
+enc(AvpName, H, Min, N, Max, [V|Vs], Opts, Strict, Mod) ->
+ [enc(AvpName, H, V, Opts, Mod)
+ | enc(AvpName, H, Min, N+1, Max, Vs, Opts, Strict, Mod)].
%% avp_header/2
@@ -176,12 +176,12 @@ avp_header('AVP', _) ->
avp_header(AvpName, Mod) ->
{_,_,_} = Mod:avp_header(AvpName).
-%% enc1/6
+%% enc/5
-enc1(Name, 'AVP', false, Value, Opts, Mod) ->
- enc_AVP(Name, Value, Opts, Mod);
+enc('AVP', false, Value, Opts, Mod) ->
+ enc_AVP(Value, Opts, Mod);
-enc1(_, AvpName, Hdr, Value, Opts, Mod) ->
+enc(AvpName, Hdr, Value, Opts, Mod) ->
enc1(AvpName, Hdr, Value, Opts, Mod).
%% enc1/5
@@ -189,41 +189,59 @@ enc1(_, AvpName, Hdr, Value, Opts, Mod) ->
enc1(AvpName, {_,_,_} = Hdr, Value, Opts, Mod) ->
diameter_codec:pack_data(Hdr, Mod:avp(encode, Value, AvpName, Opts)).
-%% enc_AVP/4
+%% enc1/6
+
+enc1(AvpName, {_,_,_} = Hdr, Value, Opts, Mod, Dict) ->
+ diameter_codec:pack_data(Hdr, avp(encode, Value, AvpName, Opts, Mod, Dict)).
+
+%% enc_AVP/3
%% No value: assume AVP data is already encoded. The normal case will
%% be when this is passed back from #diameter_packet.errors as a
%% consequence of a failed decode. Any AVP can be encoded this way
%% however, which side-steps any arity checks for known AVP's and
%% could potentially encode something unfortunate.
-enc_AVP(_, #diameter_avp{value = undefined} = A, Opts, _) ->
+enc_AVP(#diameter_avp{value = undefined} = A, Opts, _) ->
diameter_codec:pack_avp(A, Opts);
-%% Missing name for value encode.
-enc_AVP(_, #diameter_avp{name = N, value = V}, _, _)
- when N == undefined;
- N == 'AVP' ->
- ?THROW([value_with_nameless_avp, N, V]);
+%% Encode a name/value pair using an alternate dictionary if need be ...
+enc_AVP(#diameter_avp{name = AvpName, value = Value}, Opts, Mod) ->
+ enc_AVP(AvpName, Value, Opts, Mod);
+enc_AVP({AvpName, Value}, Opts, Mod) ->
+ enc_AVP(AvpName, Value, Opts, Mod);
+
+%% ... or with a specified dictionary.
+enc_AVP({Dict, AvpName, Value}, Opts, Mod) ->
+ enc1(AvpName, Dict:avp_header(AvpName), Value, Opts, Mod, Dict).
-%% Or not. Ensure that 'AVP' is the appropriate field. Note that if we
-%% don't know this AVP at all then the encode will fail.
-enc_AVP(Name, #diameter_avp{name = AvpName, value = Data}, Opts, Mod) ->
- 0 == Mod:avp_arity(Name, AvpName)
- orelse ?THROW([known_avp_as_AVP, Name, AvpName, Data]),
- enc(AvpName, Data, Opts, Mod);
+%% Don't guard against anything being sent as a generic 'AVP', which
+%% allows arity restrictions to be abused.
+
+%% enc_AVP/4
-%% The backdoor ...
-enc_AVP(_, {AvpName, Value}, Opts, Mod) ->
- enc(AvpName, Value, Opts, Mod);
+enc_AVP(AvpName, Value, Opts, Mod) ->
+ try Mod:avp_header(AvpName) of
+ H ->
+ enc1(AvpName, H, Value, Opts, Mod)
+ catch
+ error: _ ->
+ Dicts = mget(avp_dictionaries, Opts, []),
+ enc_AVP(Dicts, AvpName, Value, Opts, Mod)
+ end.
-%% ... and the side door.
-enc_AVP(_Name, {_Dict, _AvpName, _Data} = T, Opts, _) ->
- diameter_codec:pack_avp(#diameter_avp{data = T}, Opts).
+%% enc_AVP/5
-%% enc/4
+enc_AVP([Dict | Rest], AvpName, Value, Opts, Mod) ->
+ try Dict:avp_header(AvpName) of
+ H ->
+ enc1(AvpName, H, Value, Opts, Mod, Dict)
+ catch
+ error: _ ->
+ enc_AVP(Rest, AvpName, Value, Opts, Mod)
+ end;
-enc(AvpName, Value, Opts, Mod) ->
- enc1(AvpName, Mod:avp_header(AvpName), Value, Opts, Mod).
+enc_AVP([], AvpName, _, _, _) ->
+ ?THROW([no_dictionary, AvpName]).
%% ---------------------------------------------------------------------------
%% # decode_avps/3
@@ -301,9 +319,9 @@ decode(Bin, Code, Vid, DataLen, Pad, M, P, Name, Mod, Fmt, Strict, Opts0,
type = type(NameT),
index = Idx},
- Dec = decode1(Data, Name, NameT, Mod, Fmt, Opts, Avp),
+ Dec = dec(Data, Name, NameT, Mod, Fmt, Opts, Avp),
Acc = decode(T, Name, Mod, Fmt, Strict, Opts, Idx+1, AM),%% recurse
- acc(Acc, Dec, I, Name, Field, Arity, Strict, Mod, Opts);
+ acc(Acc, Dec, I, Field, Arity, Strict, Mod, Opts);
_ ->
{NameT, _Field, _Arity, {_, AM}}
= incr(Name, Code, Vid, M, Mod, Strict, Opts0, AM0),
@@ -449,12 +467,16 @@ field({AvpName, _}) ->
field(_) ->
'AVP'.
-%% decode1/7
+%% dec/7
-%% AVP not in dictionary.
-decode1(_Data, _Name, 'AVP', _Mod, _Fmt, _Opts, Avp) ->
+%% AVP not in dictionary: try an alternate.
+
+dec(_, _, 'AVP', _Mod, none, _, Avp) -> %% none decode is no-op
Avp;
+dec(Data, Name, 'AVP', Mod, Fmt, Opts, Avp) ->
+ dec_AVP(dicts(Mod, Opts), Data, Name, Mod, Fmt, Opts, Avp);
+
%% 6733, 4.4:
%%
%% Receivers of a Grouped AVP that does not have the 'M' (mandatory)
@@ -502,20 +524,35 @@ decode1(_Data, _Name, 'AVP', _Mod, _Fmt, _Opts, Avp) ->
%% defined the RFC's "unrecognized", which is slightly stronger than
%% "not defined".)
-decode1(Data, Name, {AvpName, Type}, Mod, Fmt, Opts, Avp) ->
+dec(Data, Name, {AvpName, Type}, Mod, Fmt, Opts, Avp) ->
#{app_dictionary := AppMod, failed_avp := Failed}
= Opts,
%% Reset the dictionary for best-effort decode of Failed-AVP.
- DecMod = if Failed -> AppMod;
- true -> Mod
- end,
+ Dict = if Failed -> AppMod;
+ true -> Mod
+ end,
+
+ dec(Data, Name, AvpName, Type, Mod, Dict, Fmt, Failed, Opts, Avp).
+
+%% dicts/2
- %% 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.
+dicts(Mod, #{app_dictionary := Mod, avp_dictionaries := Dicts}) ->
+ Dicts;
- try avp_decode(Data, AvpName, Opts, DecMod, Mod) of
+dicts(_, #{app_dictionary := Dict, avp_dictionaries := Dicts}) ->
+ [Dict | Dicts];
+
+dicts(Mod, #{app_dictionary := Mod}) ->
+ [];
+
+dicts(_, #{app_dictionary := Dict}) ->
+ [Dict].
+
+%% dec/10
+
+dec(Data, Name, AvpName, Type, Mod, Dict, Fmt, Failed, Opts, Avp) ->
+ try avp(decode, Data, AvpName, Opts, Mod, Dict) of
V ->
set(Type, Fmt, Avp, V)
catch
@@ -525,7 +562,39 @@ decode1(Data, Name, {AvpName, Type}, Mod, Fmt, Opts, Avp) ->
decode_error(Failed, Reason, Name, Mod, Opts, Avp)
end.
+%% dec_AVP/7
+
+dec_AVP([], _, _, _, _, _, Avp) ->
+ Avp;
+
+dec_AVP(Dicts, Data, Name, Mod, Fmt, Opts, #diameter_avp{code = Code,
+ vendor_id = Vid}
+ = Avp) ->
+ dec_AVP(Dicts, Data, Name, Mod, Fmt, Opts, Code, Vid, Avp).
+
+%% dec_AVP/9
+%%
+%% Try to decode an AVP in the first alternate dictionary that defines
+%% it.
+
+dec_AVP([Dict | Rest], Data, Name, Mod, Fmt, Opts, Code, Vid, Avp) ->
+ case Dict:avp_name(Code, Vid) of
+ {AvpName, Type} ->
+ A = Avp#diameter_avp{name = AvpName,
+ type = Type},
+ #{failed_avp := Failed} = Opts,
+ dec(Data, Name, AvpName, Type, Mod, Dict, Fmt, Failed, Opts, A);
+ _ ->
+ dec_AVP(Rest, Data, Name, Mod, Fmt, Opts, Code, Vid, Avp)
+ end;
+
+dec_AVP([], _, _, _, _, _, _, _, Avp) ->
+ Avp.
+
%% set/4
+%%
+%% A Grouped AVP is represented as a #diameter_avp{} list with AVP
+%% as head and component AVPs as tail.
set('Grouped', none, Avp, V) ->
{_Rec, As} = V,
@@ -566,13 +635,13 @@ decode_error(false, Reason, Name, Mod, Opts, Avp) ->
{Reason, Name, Avp#diameter_avp.name, Mod, Stack}),
rc(Reason, Avp, Opts, Mod).
-%% avp_decode/5
+%% avp/6
-avp_decode(Data, AvpName, Opts, Mod, Mod) ->
- Mod:avp(decode, Data, AvpName, Opts);
+avp(T, Data, AvpName, Opts, Mod, Mod) ->
+ Mod:avp(T, Data, AvpName, Opts);
-avp_decode(Data, AvpName, Opts, Mod, _) ->
- Mod:avp(decode, Data, AvpName, Opts#{module := Mod}).
+avp(T, Data, AvpName, Opts, _, Mod) ->
+ Mod:avp(T, Data, AvpName, Opts#{module := Mod}).
%% set_strict/3
%%
@@ -595,49 +664,57 @@ set_failed('Failed-AVP', #{failed_avp := false} = Opts) ->
set_failed(_, Opts) ->
Opts.
-%% acc/9
+%% acc/8
-acc([AM | Acc], As, I, Name, Field, Arity, Strict, Mod, Opts) ->
- [AM | acc1(Acc, As, I, Name, Field, Arity, Strict, Mod, Opts)].
+acc([AM | Acc], As, I, Field, Arity, Strict, Mod, Opts) ->
+ [AM | acc1(Acc, As, I, Field, Arity, Strict, Mod, Opts)].
-%% acc1/9
+%% acc1/8
%% Faulty AVP, not grouped.
-acc1(Acc, {_RC, Avp} = E, _, _, _, _, _, _, _) ->
+acc1(Acc, {_RC, Avp} = E, _, _, _, _, _, _) ->
[Avps, Failed | Rec] = Acc,
[[Avp | Avps], [E | Failed] | Rec];
%% Faulty component in grouped AVP.
-acc1(Acc, {RC, As, Avp}, _, _, _, _, _, _, _) ->
+acc1(Acc, {RC, As, Avp}, _, _, _, _, _, _) ->
[Avps, Failed | Rec] = Acc,
[[As | Avps], [{RC, Avp} | Failed] | Rec];
%% Grouped AVP ...
-acc1([Avps | Acc], [Avp|_] = As, I, Name, Field, Arity, Strict, Mod, Opts) ->
- [[As|Avps] | acc2(Acc, Avp, I, Name, Field, Arity, Strict, Mod, Opts)];
+acc1([Avps | Acc], [Avp|_] = As, I, Field, Arity, Strict, Mod, Opts) ->
+ [[As|Avps] | acc2(Acc, Avp, I, Field, Arity, Strict, Mod, Opts)];
%% ... or not.
-acc1([Avps | Acc], Avp, I, Name, Field, Arity, Strict, Mod, Opts) ->
- [[Avp|Avps] | acc2(Acc, Avp, I, Name, Field, Arity, Strict, Mod, Opts)].
+acc1([Avps | Acc], Avp, I, Field, Arity, Strict, Mod, Opts) ->
+ [[Avp|Avps] | acc2(Acc, Avp, I, Field, Arity, Strict, Mod, Opts)].
+
+%% The component list of a Grouped AVP is discarded when packing into
+%% the record (or equivalent): the values in an 'AVP' field are
+%% diameter_avp records, not a list of records in the Grouped case,
+%% and the decode into the value field is best-effort. The reason is
+%% history more than logic: it would probably have made more sense to
+%% retain the same structure as in diameter_packet.avps, but an 'AVP'
+%% list has always been flat.
-%% acc2/9
+%% acc2/8
%% No errors, but nowhere to pack.
-acc2(Acc, Avp, _, _, 'AVP', 0, _, _, _) ->
+acc2(Acc, Avp, _, 'AVP', 0, _, _, _) ->
[Failed | Rec] = Acc,
[[{rc(Avp), Avp} | Failed] | Rec];
%% Relaxed arities.
-acc2(Acc, Avp, _, _, Field, Arity, Strict, Mod, _)
+acc2(Acc, Avp, _, Field, Arity, Strict, Mod, _)
when Strict /= decode ->
pack(Arity, Field, Avp, Mod, Acc);
%% No maximum arity.
-acc2(Acc, Avp, _, _, Field, {_,'*'} = Arity, _, Mod, _) ->
+acc2(Acc, Avp, _, Field, {_,'*'} = Arity, _, Mod, _) ->
pack(Arity, Field, Avp, Mod, Acc);
%% Or check.
-acc2(Acc, Avp, I, _, Field, Arity, _, Mod, _) ->
+acc2(Acc, Avp, I, Field, Arity, _, Mod, _) ->
Mx = max_arity(Arity),
if Mx =< I ->
[Failed | Rec] = Acc,
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 1e104f9e65..7cd4d23402 100644
--- a/lib/diameter/src/base/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
@@ -115,6 +115,7 @@
strict_arities => diameter:strict_arities(),
strict_mbit := boolean(),
decode_format := diameter:decode_format(),
+ avp_dictionaries => nonempty_list(module()),
traffic_counters := boolean(),
string_decode := boolean(),
capabilities_cb => diameter:evaluable(),
@@ -718,7 +719,8 @@ init_peers() ->
%% TPid}
service_opts(Opts) ->
- remove([{strict_arities, true}],
+ remove([{strict_arities, true},
+ {avp_dictionaries, []}],
maps:merge(maps:from_list([{monitor, false} | def_opts()]),
maps:from_list(Opts))).
@@ -735,6 +737,7 @@ def_opts() -> %% defaults on the service map
{strict_arities, true},
{strict_mbit, true},
{decode_format, record},
+ {avp_dictionaries, []},
{traffic_counters, true},
{string_decode, true},
{spawn_opt, []}].
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index 5a51494274..a10bf78d6e 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -78,6 +78,7 @@
sequence :: diameter:sequence(),
counters :: boolean(),
codec :: #{decode_format := diameter:decode_format(),
+ avp_dictionaries => nonempty_list(module()),
string_decode := boolean(),
strict_arities => diameter:strict_arities(),
strict_mbit := boolean(),
@@ -107,6 +108,7 @@ make_recvdata([SvcName, PeerT, Apps, SvcOpts | _]) ->
sequence = Mask,
counters = B,
codec = maps:with([decode_format,
+ avp_dictionaries,
string_decode,
strict_arities,
strict_mbit,
@@ -351,6 +353,8 @@ recv_request(Ack,
No
end.
+%% decode/4
+
decode(Id, Dict, #recvdata{codec = Opts}, Pkt) ->
errors(Id, diameter_codec:decode(Id, Dict, Opts, Pkt)).
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 11:25:46 +0000