diff options
Diffstat (limited to 'lib/asn1/src/asn1rtt_ext.erl')
| -rw-r--r-- | lib/asn1/src/asn1rtt_ext.erl | 62 |
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. |