aboutsummaryrefslogtreecommitdiffstats
path: root/lib/asn1/src/asn1rtt_ext.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/asn1/src/asn1rtt_ext.erl')
-rw-r--r--lib/asn1/src/asn1rtt_ext.erl62
1 files changed, 61 insertions, 1 deletions
diff --git a/lib/asn1/src/asn1rtt_ext.erl b/lib/asn1/src/asn1rtt_ext.erl
index 3bf01823db..161b2db691 100644
--- a/lib/asn1/src/asn1rtt_ext.erl
+++ b/lib/asn1/src/asn1rtt_ext.erl
@@ -19,7 +19,8 @@
%%
-module(asn1rtt_ext).
--export([transform_to_EXTERNAL1990/1,transform_to_EXTERNAL1994/1]).
+-export([transform_to_EXTERNAL1990/1,transform_to_EXTERNAL1990_maps/1,
+ transform_to_EXTERNAL1994/1,transform_to_EXTERNAL1994_maps/1]).
transform_to_EXTERNAL1990({_,_,_,_}=Val) ->
transform_to_EXTERNAL1990(tuple_to_list(Val), []);
@@ -51,6 +52,30 @@ transform_to_EXTERNAL1990([Data_value], Acc)
list_to_tuple(lists:reverse([{'octet-aligned',Data_value}|Acc])).
+transform_to_EXTERNAL1990_maps(#{identification:=Id,'data-value':=Value}=V) ->
+ M0 = case Id of
+ {syntax,DRef} ->
+ #{'direct-reference'=>DRef};
+ {'presentation-context-id',IndRef} ->
+ #{'indirect-reference'=>IndRef};
+ {'context-negotiation',
+ #{'presentation-context-id':=IndRef,
+ 'transfer-syntax':=DRef}} ->
+ #{'direct-reference'=>DRef,
+ 'indirect-reference'=>IndRef}
+ end,
+ M = case V of
+ #{'data-value-descriptor':=Dvd} ->
+ M0#{'data-value-descriptor'=>Dvd};
+ #{} ->
+ M0
+ end,
+ M#{encoding=>{'octet-aligned',Value}};
+transform_to_EXTERNAL1990_maps(#{encoding:=_}=V) ->
+ %% Already in the EXTERNAL 1990 format.
+ V.
+
+
transform_to_EXTERNAL1994({'EXTERNAL',DRef,IndRef,Data_v_desc,Encoding}=V) ->
Identification =
case {DRef,IndRef} of
@@ -71,3 +96,38 @@ transform_to_EXTERNAL1994({'EXTERNAL',DRef,IndRef,Data_v_desc,Encoding}=V) ->
%% information.
V
end.
+
+transform_to_EXTERNAL1994_maps(V0) ->
+ Identification =
+ case V0 of
+ #{'direct-reference':=DRef,
+ 'indirect-reference':=asn1_NOVALUE} ->
+ {syntax,DRef};
+ #{'direct-reference':=asn1_NOVALUE,
+ 'indirect-reference':=IndRef} ->
+ {'presentation-context-id',IndRef};
+ #{'direct-reference':=DRef,
+ 'indirect-reference':=IndRef} ->
+ {'context-negotiation',
+ #{'transfer-syntax'=>DRef,
+ 'presentation-context-id'=>IndRef}}
+ end,
+ case V0 of
+ #{encoding:={'octet-aligned',Val}}
+ when is_list(Val); is_binary(Val) ->
+ %% Transform to the EXTERNAL 1994 definition.
+ V = #{identification=>Identification,
+ 'data-value'=>Val},
+ case V0 of
+ #{'data-value-descriptor':=asn1_NOVALUE} ->
+ V;
+ #{'data-value-descriptor':=Dvd} ->
+ V#{'data-value-descriptor'=>Dvd}
+ end;
+ _ ->
+ %% Keep the EXTERNAL 1990 definition to avoid losing
+ %% information.
+ V = [{K,V} || {K,V} <- maps:to_list(V0),
+ V =/= asn1_NOVALUE],
+ maps:from_list(V)
+ end.