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-rw-r--r--lib/asn1/src/asn1rtt_uper.erl178
1 files changed, 53 insertions, 125 deletions
diff --git a/lib/asn1/src/asn1rtt_uper.erl b/lib/asn1/src/asn1rtt_uper.erl
index 8efe9a7b0f..a5035c6660 100644
--- a/lib/asn1/src/asn1rtt_uper.erl
+++ b/lib/asn1/src/asn1rtt_uper.erl
@@ -21,7 +21,7 @@
-export([setext/1, fixoptionals/3,
fixextensions/2,
- skipextensions/3, getbit/1, getchoice/3 ]).
+ skipextensions/3]).
-export([set_choice/3, encode_integer/2, encode_integer/3]).
-export([encode_small_number/1, encode_constrained_number/2,
encode_boolean/1,
@@ -34,17 +34,17 @@
-export([encode_open_type/1]).
- -export([encode_UniversalString/2,
- encode_PrintableString/2,
+ -export([encode_UniversalString/3,
+ encode_PrintableString/3,
encode_GeneralString/2,
encode_GraphicString/2,
encode_TeletexString/2,
encode_VideotexString/2,
- encode_VisibleString/2,
+ encode_VisibleString/3,
encode_UTF8String/1,
- encode_BMPString/2,
- encode_IA5String/2,
- encode_NumericString/2,
+ encode_BMPString/3,
+ encode_IA5String/3,
+ encode_NumericString/3,
encode_ObjectDescriptor/2
]).
@@ -123,29 +123,6 @@ skipextensions(Bytes0, Nr, ExtensionBitstr) when is_bitstring(ExtensionBitstr) -
end.
-getchoice(Bytes,1,0) -> % only 1 alternative is not encoded
- {0,Bytes};
-getchoice(Bytes,_,1) ->
- decode_small_number(Bytes);
-getchoice(Bytes,NumChoices,0) ->
- decode_constrained_number(Bytes,{0,NumChoices-1}).
-
-
-getbit(Buffer) ->
- <<B:1,Rest/bitstring>> = Buffer,
- {B,Rest}.
-
-getbits(Buffer, Num) when is_bitstring(Buffer) ->
- <<Bs:Num,Rest/bitstring>> = Buffer,
- {Bs,Rest}.
-
-
-%% Pick the first Num octets.
-%% Returns octets as an integer with bit significance as in buffer.
-getoctets(Buffer, Num) when is_bitstring(Buffer) ->
- <<Val:Num/integer-unit:8,RestBitStr/bitstring>> = Buffer,
- {Val,RestBitStr}.
-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% set_choice(Alt,Choices,Altnum) -> ListofBitSettings
%% Alt = atom()
@@ -198,9 +175,7 @@ set_choice_tag(_Alt,[],_Tag) ->
%% | binary
%% Contraint = not used in this version
%%
-encode_open_type(Val) when is_list(Val) ->
- encode_open_type(list_to_binary(Val));
-encode_open_type(Val) when is_binary(Val) ->
+encode_open_type(Val) ->
[encode_length(byte_size(Val)),Val].
@@ -248,7 +223,7 @@ encode_integer1(C, Val) ->
case VR = get_constraint(C, 'ValueRange') of
no ->
encode_unconstrained_number(Val);
- {Lb,'MAX'} ->
+ {Lb,'MAX'} when Lb =< Val ->
encode_semi_constrained_number(Lb, Val);
%% positive with range
{Lb,Ub} when Val >= Lb, Ub >= Val ->
@@ -265,15 +240,6 @@ encode_small_number(Val) when Val < 64 ->
encode_small_number(Val) ->
[<<1:1>>|encode_semi_constrained_number(0, Val)].
-decode_small_number(Bytes) ->
- {Bit,Bytes2} = getbit(Bytes),
- case Bit of
- 0 ->
- getbits(Bytes2,6);
- 1 ->
- decode_semi_constrained_number(Bytes2)
- end.
-
%% X.691:10.7 Encoding of a semi-constrained whole number
encode_semi_constrained_number(Lb, Val) ->
%% encoding in minimum number of octets preceeded by a length
@@ -289,11 +255,6 @@ encode_semi_constrained_number(Lb, Val) ->
[encode_length(Size),Bin]
end.
-decode_semi_constrained_number(Bytes) ->
- {Len,Bytes2} = decode_length(Bytes),
- {V,Bytes3} = getoctets(Bytes2,Len),
- {V,Bytes3}.
-
encode_constrained_number({Lb,Ub}, Val) when Val >= Lb, Ub >= Val ->
Range = Ub - Lb + 1,
Val2 = Val - Lb,
@@ -302,13 +263,6 @@ encode_constrained_number({Lb,Ub}, Val) when Val >= Lb, Ub >= Val ->
encode_constrained_number(Range,Val) ->
exit({error,{asn1,{integer_range,Range,value,Val}}}).
-
-decode_constrained_number(Buffer, {Lb,Ub}) ->
- Range = Ub - Lb + 1,
- NumBits = num_bits(Range),
- {Val,Remain} = getbits(Buffer,NumBits),
- {Val+Lb,Remain}.
-
%% X.691:10.8 Encoding of an unconstrained whole number
encode_unconstrained_number(Val) when Val >= 0 ->
@@ -390,22 +344,18 @@ encode_length(Len) -> % un-constrained
error({error,{asn1,{encode_length,{nyi,above_16k}}}})
end.
-encode_length(undefined, Len) -> % unconstrained
- encode_length(Len);
-encode_length({0,'MAX'},Len) ->
- encode_length(undefined, Len);
-encode_length({Lb,Ub}=Vr, Len) when Ub =< 65535, Lb >= 0 -> % constrained
- encode_constrained_number(Vr,Len);
-encode_length({Lb,_Ub}, Len) when is_integer(Lb), Lb >= 0 -> % Ub > 65535
- encode_length(Len);
-encode_length({{Lb,Ub}=Vr,Ext},Len)
- when Ub =< 65535, Lb >= 0, Len =< Ub, is_list(Ext) ->
- %% constrained extensible
- [<<0:1>>,encode_constrained_number(Vr,Len)];
-encode_length({{Lb,_Ub},Ext}, Len) when is_list(Ext) ->
- [<<1:1>>,encode_semi_constrained_number(Lb, Len)];
-encode_length(SingleValue, _Len) when is_integer(SingleValue) ->
- [].
+encode_length({C,[]}, Len) ->
+ case C of
+ {Lb,Ub}=Vr when Lb =< Len, Len =< Ub ->
+ [<<0:1>>|encode_constrained_number(Vr, Len)];
+ _ ->
+ [<<1:1>>|encode_length(Len)]
+ end;
+encode_length(Len, Len) ->
+ [];
+encode_length(Vr, Len) ->
+ encode_constrained_number(Vr, Len).
+
%% X.691 10.9.3.4 (only used for length of bitmap that prefixes extension
%% additions in a sequence or set
@@ -687,10 +637,6 @@ encode_octet_string(Val) ->
encode_octet_string(C, Val) ->
case C of
- 1 ->
- list_to_binary(Val);
- 2 ->
- list_to_binary(Val);
{_,_}=VR ->
try
[encode_length(VR, length(Val)),list_to_binary(Val)]
@@ -699,20 +645,7 @@ encode_octet_string(C, Val) ->
encode_fragmented_octet_string(Val)
end;
Sv when is_integer(Sv), Sv =:= length(Val) -> % fixed length
- if
- Sv =< 65535 ->
- list_to_binary(Val);
- true ->
- encode_fragmented_octet_string(Val)
- end;
- Sv when is_list(Sv) ->
- try
- [encode_length({hd(Sv),lists:max(Sv)},
- length(Val)),list_to_binary(Val)]
- catch
- error:{error,{asn1,{encode_length,_}}} ->
- encode_fragmented_octet_string(Val)
- end
+ list_to_binary(Val)
end.
@@ -742,41 +675,34 @@ efos_1(<<B/bitstring>>) ->
encode_restricted_string(Val) when is_list(Val)->
[encode_length(length(Val)),list_to_binary(Val)].
-encode_known_multiplier_string(StringType, C, Val) ->
- Result = chars_encode(C, StringType, Val),
- NumBits = get_NumBits(C, StringType),
- case get_constraint(C, 'SizeConstraint') of
- Ub when is_integer(Ub), Ub*NumBits =< 16 ->
- Result;
- 0 ->
- [];
- Ub when is_integer(Ub),Ub =<65535 -> % fixed length
+encode_known_multiplier_string(StringType, C, Pa, Val) ->
+ Result = chars_encode(Pa, StringType, Val),
+ case C of
+ Ub when is_integer(Ub) ->
Result;
- {Ub,Lb} ->
- [encode_length({Ub,Lb}, length(Val)),Result];
- Vl when is_list(Vl) ->
- [encode_length({lists:min(Vl),lists:max(Vl)}, length(Val)),Result];
+ {_,_}=Range ->
+ [encode_length(Range, length(Val)),Result];
no ->
[encode_length(length(Val)),Result]
end.
-encode_NumericString(C,Val) ->
- encode_known_multiplier_string('NumericString',C,Val).
+encode_NumericString(C, Pa, Val) ->
+ encode_known_multiplier_string('NumericString', C, Pa, Val).
-encode_PrintableString(C,Val) ->
- encode_known_multiplier_string('PrintableString',C,Val).
+encode_PrintableString(C, Pa, Val) ->
+ encode_known_multiplier_string('PrintableString', C, Pa, Val).
-encode_VisibleString(C,Val) -> % equivalent with ISO646String
- encode_known_multiplier_string('VisibleString',C,Val).
+encode_VisibleString(C, Pa, Val) -> % equivalent with ISO646String
+ encode_known_multiplier_string('VisibleString', C, Pa, Val).
-encode_IA5String(C,Val) ->
- encode_known_multiplier_string('IA5String',C,Val).
+encode_IA5String(C, Pa, Val) ->
+ encode_known_multiplier_string('IA5String', C, Pa, Val).
-encode_BMPString(C,Val) ->
- encode_known_multiplier_string('BMPString',C,Val).
+encode_BMPString(C, Pa, Val) ->
+ encode_known_multiplier_string('BMPString', C, Pa, Val).
-encode_UniversalString(C,Val) ->
- encode_known_multiplier_string('UniversalString',C,Val).
+encode_UniversalString(C, Pa, Val) ->
+ encode_known_multiplier_string('UniversalString', C, Pa, Val).
%% end of known-multiplier strings for which PER visible constraints are
@@ -805,14 +731,15 @@ encode_VideotexString(_C,Val) ->
%% into account.
%% This function does only encode the value part and NOT the length
-chars_encode(C,StringType,Value) ->
- case {StringType,get_constraint(C,'PermittedAlphabet')} of
+chars_encode(Pa, StringType, Value) ->
+ case {StringType,Pa} of
{'UniversalString',{_,_Sv}} ->
exit({error,{asn1,{'not implemented',"UniversalString with PermittedAlphabet constraint"}}});
{'BMPString',{_,_Sv}} ->
exit({error,{asn1,{'not implemented',"BMPString with PermittedAlphabet constraint"}}});
_ ->
- {NumBits,CharOutTab} = {get_NumBits(C,StringType),get_CharOutTab(C,StringType)},
+ {NumBits,CharOutTab} = {get_NumBits(Pa, StringType),
+ get_CharOutTab(Pa, StringType)},
chars_encode2(Value,NumBits,CharOutTab)
end.
@@ -839,8 +766,8 @@ exit_if_false(V,false)->
exit_if_false(_,V) ->V.
-get_NumBits(C,StringType) ->
- case get_constraint(C,'PermittedAlphabet') of
+get_NumBits(Pa, StringType) ->
+ case Pa of
{'SingleValue',Sv} ->
charbits(length(Sv));
no ->
@@ -860,22 +787,23 @@ get_NumBits(C,StringType) ->
end
end.
-get_CharOutTab(C,StringType) ->
- case get_constraint(C,'PermittedAlphabet') of
+get_CharOutTab(Pa, StringType) ->
+ case Pa of
{'SingleValue',Sv} ->
- get_CharTab2(C,StringType,hd(Sv),lists:max(Sv),Sv);
+ get_CharTab2(Pa, StringType, hd(Sv), lists:max(Sv), Sv);
no ->
case StringType of
'IA5String' ->
{0,16#7F,notab};
'VisibleString' ->
- get_CharTab2(C,StringType,16#20,16#7F,notab);
+ get_CharTab2(Pa, StringType, 16#20, 16#7F, notab);
'PrintableString' ->
Chars = lists:sort(
" '()+,-./0123456789:=?ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"),
- get_CharTab2(C,StringType,hd(Chars),lists:max(Chars),Chars);
+ get_CharTab2(Pa, StringType, hd(Chars),
+ lists:max(Chars), Chars);
'NumericString' ->
- get_CharTab2(C,StringType,16#20,$9," 0123456789");
+ get_CharTab2(Pa, StringType, 16#20, $9, " 0123456789");
'UniversalString' ->
{0,16#FFFFFFFF,notab};
'BMPString' ->
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