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Merge branch 'bjorn/asn1/per-decode/OTP-10916' into maint-r16

* bjorn/asn1/per-decode/OTP-10916:
  PER: Ensure that the complete encoding is at least one byte
  PER/UPER: Correct decoding of ENUMERATEDs with a single value
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Erlang/OTP
Erlang/OTP committed Mar 13, 2013
2 parents cda401b + 5588449 commit df291bae520a2fdd404172fdffaaf040fd939151
@@ -61,6 +61,8 @@ optimize_alignment(Imm, Al) ->
per_dec_boolean() ->
{map,{get_bits,1,[1]},[{0,false},{1,true}]}.
+per_dec_enumerated([{V,_}], _Aligned) ->
+ {value,V};
per_dec_enumerated(NamedList0, Aligned) ->
Ub = length(NamedList0) - 1,
Constraint = [{'ValueRange',{0,Ub}}],
@@ -375,6 +377,8 @@ opt_al({call,Fun,E0}, A0) ->
opt_al({convert,Op,E0}, A0) ->
{E,A} = opt_al(E0, A0),
{{convert,Op,E},A};
+opt_al({value,V}=Term, A) when is_integer(V); is_atom(V) ->
+ {Term,A};
opt_al({value,E0}, A0) ->
{E,A} = opt_al(E0, A0),
{{value,E},A};
@@ -391,8 +395,6 @@ opt_al({'case',Cs0}, A0) ->
opt_al({map,E0,Cs}, A0) ->
{E,A} = opt_al(E0, A0),
{{map,E,Cs},A};
-opt_al('NULL'=Null, A) ->
- {Null,A};
opt_al(I, A) when is_integer(I) ->
{I,A}.
@@ -480,8 +482,8 @@ flatten({map,E0,Cs0}, Buf0, St0) ->
{Dst,St2} = new_var("Int", St1),
Cs = flatten_map_cs(Cs0, E),
{{Dst,DstBuf},Pre++[{'map',E,Cs,{Dst,DstBuf}}],St2};
-flatten({value,'NULL'}, Buf0, St0) ->
- {{"'NULL'",Buf0},[],St0};
+flatten({value,V}, Buf0, St0) when is_atom(V) ->
+ {{"'"++atom_to_list(V)++"'",Buf0},[],St0};
flatten({value,V0}, Buf0, St0) when is_integer(V0) ->
{{V0,Buf0},[],St0};
flatten({value,V0}, Buf0, St0) ->
@@ -963,7 +963,10 @@ encode_relative_oid(Val) when is_list(Val) ->
%%
complete(L) ->
- asn1rt_nif:encode_per_complete(L).
+ case asn1rt_nif:encode_per_complete(L) of
+ <<>> -> <<0>>;
+ Bin -> Bin
+ end.
octets_to_complete(Len,Val) when Len < 256 ->
[20,Len,Val];
@@ -1016,8 +1016,11 @@ complete(InList) when is_list(InList) ->
Bits -> <<Res/bitstring,0:(8-Bits)>>
end
end;
-complete(InList) when is_binary(InList) ->
- InList;
+complete(Bin) when is_binary(Bin) ->
+ case Bin of
+ <<>> -> <<0>>;
+ _ -> Bin
+ end;
complete(InList) when is_bitstring(InList) ->
PadLen = 8 - (bit_size(InList) band 7),
<<InList/bitstring,0:PadLen>>.
@@ -22,6 +22,8 @@ BEGIN
Enum ::= ENUMERATED {monday(1),tuesday(2),wednesday(3),thursday(4),
friday(5),saturday(6),sunday(7)}
+ SingleEnumVal ::= ENUMERATED {true}
+ SingleEnumValExt ::= ENUMERATED {true, ...}
ObjId ::= OBJECT IDENTIFIER
@@ -35,4 +37,15 @@ BEGIN
base (2),
exponent (-125..128) } )
+ Seq ::= SEQUENCE {
+ n Null,
+ i1 INTEGER (0..63),
+ e1 SingleEnumVal,
+ i2 INTEGER (0..63),
+ e2 SingleEnumVal,
+ i3 INTEGER (0..63),
+ b Bool,
+ i4 INTEGER (0..63)
+ }
+
END
@@ -513,6 +513,14 @@ enum(Rules) ->
case catch asn1_wrapper:encode('Prim','Enum',4) of Enum -> Enum end,
ok
end,
+
+ case Rules of
+ Per when Per =:= per; Per =:= uper ->
+ {ok,<<0>>} = 'Prim':encode('SingleEnumVal', true),
+ {ok,<<0>>} = 'Prim':encode('SingleEnumValExt', true);
+ ber ->
+ ok
+ end,
ok.

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