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-rw-r--r--lib/asn1/src/asn1rtt_per.erl198
1 files changed, 1 insertions, 197 deletions
diff --git a/lib/asn1/src/asn1rtt_per.erl b/lib/asn1/src/asn1rtt_per.erl
index a7bbc33a19..d0a4de65e0 100644
--- a/lib/asn1/src/asn1rtt_per.erl
+++ b/lib/asn1/src/asn1rtt_per.erl
@@ -25,8 +25,7 @@
encode_constrained_number/2,
encode_length/1,
encode_length/2,
- decode_compact_bit_string/3,
- encode_bit_string/3, decode_bit_string/3,
+ encode_bit_string/3,
encode_object_identifier/1, decode_object_identifier/1,
encode_relative_oid/1, decode_relative_oid/1,
complete/1,
@@ -99,20 +98,6 @@ getchoice(Bytes, NumChoices, 0) ->
decode_constrained_number(Bytes, {0,NumChoices-1}).
-%% getbits_as_binary(Num,Bytes) -> {Bin,Rest}
-%% Num = integer(),
-%% Bytes = bitstring(),
-%% Bin = bitstring(),
-%% Rest = bitstring()
-getbits_as_binary(Num,Bytes) when is_bitstring(Bytes) ->
- <<BS:Num/bitstring,Rest/bitstring>> = Bytes,
- {BS,Rest}.
-
-getbits_as_list(Num,Bytes) when is_bitstring(Bytes) ->
- <<BitStr:Num/bitstring,Rest/bitstring>> = Bytes,
- {[ B || <<B:1>> <= BitStr],Rest}.
-
-
getbit(Buffer) ->
<<B:1,Rest/bitstring>> = Buffer,
{B,Rest}.
@@ -201,42 +186,6 @@ set_choice_tag(Alt,[_H|Rest],Tag) ->
set_choice_tag(_Alt,[],_Tag) ->
false.
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% decode_fragmented_XXX; decode of values encoded fragmented according
-%% to ITU-T X.691 clause 10.9.3.8. The unit (XXX) is either bits, octets,
-%% characters or number of components (in a choice,sequence or similar).
-%% Buffer is a buffer binary().
-%% C is the constrained length.
-%% If the buffer is not aligned, this function does that.
-decode_fragmented_bits(Buffer, C) when is_binary(Buffer) ->
- decode_fragmented_bits(Buffer, C, []);
-decode_fragmented_bits(Buffer,C) when is_bitstring(Buffer) ->
- AlignBits = bit_size(Buffer) rem 8,
- <<_:AlignBits,Rest/binary>> = Buffer,
- decode_fragmented_bits(Rest,C,[]).
-
-decode_fragmented_bits(<<3:2,Len:6,Bin/binary>>, C, Acc) ->
- {Value,Bin2} = split_binary(Bin, Len * ?'16K'), % Len = 1 | 2 | 3 | 4
- decode_fragmented_bits(Bin2,C,[Value|Acc]);
-decode_fragmented_bits(<<0:1,0:7,Bin/binary>>, C, Acc) ->
- BinBits = erlang:list_to_bitstring(lists:reverse(Acc)),
- case C of
- Int when is_integer(Int), C =:= bit_size(BinBits) ->
- {BinBits,Bin};
- Int when is_integer(Int) ->
- exit({error,{asn1,{illegal_value,C,BinBits}}})
- end;
-decode_fragmented_bits(<<0:1,Len:7,Bin/binary>>, C, Acc) ->
- <<Value:Len/bitstring,Rest/bitstring>> = Bin,
- BinBits = erlang:list_to_bitstring([Value|Acc]),
- case C of
- Int when is_integer(Int), C =:= bit_size(BinBits) ->
- {BinBits,Rest};
- Int when is_integer(Int) ->
- exit({error,{asn1,{illegal_value,C,BinBits}}})
- end.
-
-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% encode_open_type(Constraint, Value) -> CompleteList
%% Value = list of bytes of an already encoded value (the list must be flat)
@@ -793,138 +742,6 @@ trailingZeroesInNibble(14) ->
trailingZeroesInNibble(15) ->
0.
-%%%%%%%%%%%%%%%
-%% The result is presented as a list of named bits (if possible)
-%% else as a tuple {Unused,Bits}. Unused is the number of unused
-%% bits, least significant bits in the last byte of Bits. Bits is
-%% the BIT STRING represented as a binary.
-%%
-decode_compact_bit_string(Buffer, C, NamedNumberList) ->
- case get_constraint(C,'SizeConstraint') of
- 0 -> % fixed length
- {{8,0},Buffer};
- V when is_integer(V),V=<16 -> %fixed length 16 bits or less
- compact_bit_string(Buffer,V,NamedNumberList);
- V when is_integer(V),V=<65536 -> %fixed length > 16 bits
- Bytes2 = align(Buffer),
- compact_bit_string(Bytes2,V,NamedNumberList);
- V when is_integer(V) -> % V > 65536 => fragmented value
- {BitStr,Buffer2} = decode_fragmented_bits(Buffer,V),
- case bit_size(BitStr) band 7 of
- 0 -> {{0,BitStr},Buffer2};
- N -> {{8-N,<<BitStr/bitstring,0:(8-N)>>},Buffer2}
- end;
- {Lb,Ub} when is_integer(Lb),is_integer(Ub) ->
- %% This case may demand decoding of fragmented length/value
- {Len,Bytes2} = decode_length(Buffer, {Lb,Ub}),
- Bytes3 = align(Bytes2),
- compact_bit_string(Bytes3,Len,NamedNumberList);
- no ->
- %% This case may demand decoding of fragmented length/value
- {Len,Bytes2} = decode_length(Buffer, undefined),
- Bytes3 = align(Bytes2),
- compact_bit_string(Bytes3,Len,NamedNumberList);
- {{Fix,Fix},Ext} = Sc when is_integer(Fix), is_list(Ext) ->
- case decode_length(Buffer,Sc) of
- {Len,Bytes2} when Len > Fix ->
- Bytes3 = align(Bytes2),
- compact_bit_string(Bytes3,Len,NamedNumberList);
- {Len,Bytes2} when Len > 16 ->
- Bytes3 = align(Bytes2),
- compact_bit_string(Bytes3,Len,NamedNumberList);
- {Len,Bytes2} ->
- compact_bit_string(Bytes2,Len,NamedNumberList)
- end;
- Sc ->
- {Len,Bytes2} = decode_length(Buffer,Sc),
- Bytes3 = align(Bytes2),
- compact_bit_string(Bytes3,Len,NamedNumberList)
- end.
-
-
-%%%%%%%%%%%%%%%
-%% The result is presented as a list of named bits (if possible)
-%% else as a list of 0 and 1.
-%%
-decode_bit_string(Buffer, C, NamedNumberList) ->
- case get_constraint(C,'SizeConstraint') of
- {Lb,Ub} when is_integer(Lb),is_integer(Ub) ->
- {Len,Bytes2} = decode_length(Buffer,{Lb,Ub}),
- Bytes3 = align(Bytes2),
- bit_list_or_named(Bytes3,Len,NamedNumberList);
- no ->
- {Len,Bytes2} = decode_length(Buffer,undefined),
- Bytes3 = align(Bytes2),
- bit_list_or_named(Bytes3,Len,NamedNumberList);
- 0 -> % fixed length
- {[],Buffer}; % nothing to encode
- V when is_integer(V),V=<16 -> % fixed length 16 bits or less
- bit_list_or_named(Buffer,V,NamedNumberList);
- V when is_integer(V),V=<65536 ->
- Bytes2 = align(Buffer),
- bit_list_or_named(Bytes2,V,NamedNumberList);
- V when is_integer(V) ->
- Bytes2 = align(Buffer),
- {BinBits,_Bytes3} = decode_fragmented_bits(Bytes2,V),
- bit_list_or_named(BinBits,V,NamedNumberList);
- {{Fix,Fix},Ext} =Sc when is_integer(Fix), is_list(Ext) ->
- case decode_length(Buffer,Sc) of
- {Len,Bytes2} when Len > Fix ->
- Bytes3 = align(Bytes2),
- bit_list_or_named(Bytes3,Len,NamedNumberList);
- {Len,Bytes2} when Len > 16 ->
- Bytes3 = align(Bytes2),
- bit_list_or_named(Bytes3,Len,NamedNumberList);
- {Len,Bytes2} ->
- bit_list_or_named(Bytes2,Len,NamedNumberList)
- end;
- Sc -> % extension marker
- {Len,Bytes2} = decode_length(Buffer,Sc),
- Bytes3 = align(Bytes2),
- bit_list_or_named(Bytes3,Len,NamedNumberList)
- end.
-
-
-%% if no named bits are declared we will return a
-%% {Unused,Bits}. Unused = integer(),
-%% Bits = binary().
-compact_bit_string(Buffer,Len,[]) ->
- {BitStr,Rest} = getbits_as_binary(Len,Buffer), % {{Unused,BinBits},NewBuffer}
- PadLen = (8 - (bit_size(BitStr) rem 8)) rem 8,
- {{PadLen,<<BitStr/bitstring,0:PadLen>>},Rest};
-compact_bit_string(Buffer,Len,NamedNumberList) ->
- bit_list_or_named(Buffer,Len,NamedNumberList).
-
-
-%% if no named bits are declared we will return a
-%% BitList = [0 | 1]
-
-bit_list_or_named(Buffer,Len,[]) ->
- getbits_as_list(Len,Buffer);
-
-%% if there are named bits declared we will return a named
-%% BitList where the names are atoms and unnamed bits represented
-%% as {bit,Pos}
-%% BitList = [atom() | {bit,Pos}]
-%% Pos = integer()
-
-bit_list_or_named(Buffer,Len,NamedNumberList) ->
- {BitList,Rest} = getbits_as_list(Len,Buffer),
- {bit_list_or_named1(0,BitList,NamedNumberList,[]), Rest}.
-
-bit_list_or_named1(Pos,[0|Bt],Names,Acc) ->
- bit_list_or_named1(Pos+1,Bt,Names,Acc);
-bit_list_or_named1(Pos,[1|Bt],Names,Acc) ->
- case lists:keyfind(Pos, 2, Names) of
- {Name,_} ->
- bit_list_or_named1(Pos+1,Bt,Names,[Name|Acc]);
- false ->
- bit_list_or_named1(Pos+1,Bt,Names,[{bit,Pos}|Acc])
- end;
-bit_list_or_named1(_Pos,[],_Names,Acc) ->
- lists:reverse(Acc).
-
-
%%%%%%%%%%%%%%%
%%
@@ -1292,19 +1109,6 @@ decode_relative_oid(Bytes) ->
{list_to_tuple(ObjVals),Bytes3}.
-get_constraint([{Key,V}],Key) ->
- V;
-get_constraint([],_) ->
- no;
-get_constraint(C,Key) ->
- case lists:keyfind(Key, 1, C) of
- false ->
- no;
- {_,V} ->
- V
- end.
-
-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% complete(InList) -> ByteList
%% Takes a coded list with bits and bytes and converts it to a list of bytes
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 01:13:25 +0000