diff options
Diffstat (limited to 'lib/asn1')
| -rw-r--r-- | lib/asn1/src/Makefile | 13 | ||||
| -rw-r--r-- | lib/asn1/src/asn1.app.src | 5 | ||||
| -rw-r--r-- | lib/asn1/src/asn1_records.hrl | 6 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rt_ber_bin.erl | 525 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rt_ber_bin_v2.erl | 1993 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rt_check.erl | 360 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rt_per_bin_rt2ct.erl | 1587 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rt_uper_bin.erl | 1487 |
8 files changed, 0 insertions, 5976 deletions
diff --git a/lib/asn1/src/Makefile b/lib/asn1/src/Makefile index 398b4f6f9d..b1500d9ea6 100644 --- a/lib/asn1/src/Makefile +++ b/lib/asn1/src/Makefile @@ -69,20 +69,7 @@ CT_MODULES= \ RT_MODULES= \ asn1rt \ - asn1rt_ber_bin \ - asn1rt_ber_bin_v2 \ - asn1rt_per_bin_rt2ct \ - asn1rt_uper_bin \ - asn1rt_check \ asn1rt_nif -# asn1_sup \ -# asn1_app \ -# asn1_server - - -# the rt module to use is defined in asn1_records.hrl -# and must be updated when an incompatible change is done in the rt modules - MODULES= $(CT_MODULES) $(RT_MODULES) diff --git a/lib/asn1/src/asn1.app.src b/lib/asn1/src/asn1.app.src index 64b33a8a30..f2ee8deb75 100644 --- a/lib/asn1/src/asn1.app.src +++ b/lib/asn1/src/asn1.app.src @@ -3,11 +3,6 @@ {vsn, "%VSN%"}, {modules, [ asn1rt, - asn1rt_per_bin_rt2ct, - asn1rt_uper_bin, - asn1rt_ber_bin, - asn1rt_ber_bin_v2, - asn1rt_check, asn1rt_nif ]}, {registered, [ diff --git a/lib/asn1/src/asn1_records.hrl b/lib/asn1/src/asn1_records.hrl index 59a9acb7e7..c229aa0759 100644 --- a/lib/asn1/src/asn1_records.hrl +++ b/lib/asn1/src/asn1_records.hrl @@ -24,12 +24,6 @@ -define(dbg(Fmt, Args), no_debug). -endif. --define('RT_BER_BIN',"asn1rt_ber_bin"). --define('RT_PER_BIN',"asn1rt_per_bin"). - -%% Some encoding are common for BER and PER. Shared code are in RT_COMMON --define('RT_COMMON',asn1rt_ber_bin). - -define('COMPLETE_ENCODE',1). -define('TLV_DECODE',2). diff --git a/lib/asn1/src/asn1rt_ber_bin.erl b/lib/asn1/src/asn1rt_ber_bin.erl deleted file mode 100644 index ec1549804b..0000000000 --- a/lib/asn1/src/asn1rt_ber_bin.erl +++ /dev/null @@ -1,525 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2000-2010. All Rights Reserved. -%% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% -%% --module(asn1rt_ber_bin). - --export([decode_length/1, - encode_real/2, encode_real/3, - decode_real/2, decode_real/4, - decode_tag/1]). - --include("asn1_records.hrl"). - -%% the encoding of class of tag bits 8 and 7 --define(UNIVERSAL, 0). - -%%% primitive or constructed encoding % bit 6 --define(PRIMITIVE, 0). --define(CONSTRUCTED, 2#00100000). - -%%% The tag-number for universal types --define(N_REAL, 9). - -encode_tag_val({Class, Form, TagNo}) when (TagNo =< 30) -> - <<(Class bsr 6):2,(Form bsr 5):1,TagNo:5>>; - -encode_tag_val({Class, Form, TagNo}) -> - {Octets,_Len} = mk_object_val(TagNo), - BinOct = list_to_binary(Octets), - <<(Class bsr 6):2, (Form bsr 5):1, 31:5,BinOct/binary>>. - -%%=============================================================================== -%% Decode a tag -%% -%% decode_tag(OctetListBuffer) -> {{Class, Form, TagNo}, RestOfBuffer, RemovedBytes} -%%=============================================================================== - -%% multiple octet tag -decode_tag(<<Class:2, Form:1, 31:5, Buffer/binary>>) -> - {TagNo, Buffer1, RemovedBytes} = decode_tag(Buffer, 0, 1), - {{(Class bsl 6), (Form bsl 5), TagNo}, Buffer1, RemovedBytes}; - -%% single tag (< 31 tags) -decode_tag(<<Class:2,Form:1,TagNo:5, Buffer/binary>>) -> - {{(Class bsl 6), (Form bsl 5), TagNo}, Buffer, 1}. - -%% last partial tag -decode_tag(<<0:1,PartialTag:7, Buffer/binary>>, TagAck, RemovedBytes) -> - TagNo = (TagAck bsl 7) bor PartialTag, - %%<<TagNo>> = <<TagAck:1, PartialTag:7>>, - {TagNo, Buffer, RemovedBytes+1}; -% more tags -decode_tag(<<_:1,PartialTag:7, Buffer/binary>>, TagAck, RemovedBytes) -> - TagAck1 = (TagAck bsl 7) bor PartialTag, - %%<<TagAck1:16>> = <<TagAck:1, PartialTag:7,0:8>>, - decode_tag(Buffer, TagAck1, RemovedBytes+1). - -%%------------------------------------------------------------------ -%% check_tags_i is the same as check_tags except that it stops and -%% returns the remaining tags not checked when it encounters an -%% indefinite length field -%% only called internally within this module - -check_tags_i([Tag], Buffer, OptOrMand) -> % optimized very usual case - {[],check_one_tag(Tag, Buffer, OptOrMand)}; -check_tags_i(Tags, Buffer, OptOrMand) -> - check_tags_i(Tags, Buffer, 0, OptOrMand). - -check_tags_i([Tag1,Tag2|TagRest], Buffer, Rb, OptOrMand) - when Tag1#tag.type == 'IMPLICIT' -> - check_tags_i([Tag1#tag{type=Tag2#tag.type}|TagRest], Buffer, Rb, OptOrMand); - -check_tags_i([Tag1|TagRest], Buffer, Rb, OptOrMand) -> - {Form_Length,Buffer2,Rb1} = check_one_tag(Tag1, Buffer, OptOrMand), - case TagRest of - [] -> {TagRest, {Form_Length, Buffer2, Rb + Rb1}}; - _ -> - case Form_Length of - {?CONSTRUCTED,_} -> - {TagRest, {Form_Length, Buffer2, Rb + Rb1}}; - _ -> - check_tags_i(TagRest, Buffer2, Rb + Rb1, mandatory) - end - end. - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% This function is called from generated code - -check_one_tag(Tag=#tag{class=ExpectedClass,number=ExpectedNumber}, Buffer, OptOrMand) -> - case catch decode_tag(Buffer) of - {'EXIT',_Reason} -> - tag_error(no_data,Tag,Buffer,OptOrMand); - {{ExpectedClass,Form,ExpectedNumber},Buffer2,Rb} -> - {{L,Buffer3},RemBytes2} = decode_length(Buffer2), - {{Form,L}, Buffer3, RemBytes2+Rb}; - {ErrorTag,_,_} -> - tag_error(ErrorTag, Tag, Buffer, OptOrMand) - end. - -tag_error(ErrorTag, Tag, Buffer, OptOrMand) -> - case OptOrMand of - mandatory -> - exit({error,{asn1, {invalid_tag, - {ErrorTag, Tag, Buffer}}}}); - _ -> - exit({error,{asn1, {no_optional_tag, - {ErrorTag, Tag, Buffer}}}}) - end. -%%======================================================================= -%% -%% Encode all tags in the list Tags and return a possibly deep list of -%% bytes with tag and length encoded -%% -%% prepend_tags(Tags, BytesSoFar, LenSoFar) -> {Bytes, Len} -encode_tags(Tags, BytesSoFar, LenSoFar) -> - NewTags = encode_tags1(Tags, []), - %% NewTags contains the resulting tags in reverse order - encode_tags2(NewTags, BytesSoFar, LenSoFar). - -%encode_tags2([#tag{class=?UNIVERSAL,number=No}|Trest], BytesSoFar, LenSoFar) -> -% {Bytes2,L2} = encode_length(LenSoFar), -% encode_tags2(Trest,[[No|Bytes2],BytesSoFar], LenSoFar + 1 + L2); -encode_tags2([Tag|Trest], BytesSoFar, LenSoFar) -> - {Bytes1,L1} = encode_one_tag(Tag), - {Bytes2,L2} = encode_length(LenSoFar), - encode_tags2(Trest, [Bytes1,Bytes2|BytesSoFar], - LenSoFar + L1 + L2); -encode_tags2([], BytesSoFar, LenSoFar) -> - {BytesSoFar,LenSoFar}. - -encode_tags1([Tag1, Tag2| Trest], Acc) when Tag1#tag.type =:= 'IMPLICIT' -> - encode_tags1([Tag1#tag{type=Tag2#tag.type,form=Tag2#tag.form}|Trest],Acc); -encode_tags1([Tag1 | Trest], Acc) -> - encode_tags1(Trest, [Tag1|Acc]); -encode_tags1([], Acc) -> - Acc. % the resulting tags are returned in reverse order - -encode_one_tag(Bin) when is_binary(Bin) -> - {Bin,byte_size(Bin)}; -encode_one_tag(#tag{class=Class,number=No,type=Type, form = Form}) -> - NewForm = case Type of - 'EXPLICIT' -> - ?CONSTRUCTED; - _ -> - Form - end, - Bytes = encode_tag_val({Class,NewForm,No}), - {Bytes,size(Bytes)}. - -%%============================================================================ -%% -%% Real value, ITU_T X.690 Chapter 8.5 -%%============================================================================ -%% -%% encode real value -%%============================================================================ - -%% only base 2 internally so far!! -encode_real(_C,0, DoTag) -> - dotag(DoTag, ?N_REAL, {[],0}); -encode_real(_C,'PLUS-INFINITY', DoTag) -> - dotag(DoTag, ?N_REAL, {[64],1}); -encode_real(_C,'MINUS-INFINITY', DoTag) -> - dotag(DoTag, ?N_REAL, {[65],1}); -encode_real(C,Val, DoTag) when is_tuple(Val); is_list(Val) -> - dotag(DoTag, ?N_REAL, encode_real(C,Val)). - -%%%%%%%%%%%%%% -%% only base 2 encoding! -%% binary encoding: -%% +------------+ +------------+ +-+-+-+-+---+---+ -%% | (tag)9 | | n + p + 1 | |1|S|BB |FF |EE | -%% +------------+ +------------+ +-+-+-+-+---+---+ -%% -%% +------------+ +------------+ -%% | | | | -%% +------------+ ...+------------+ -%% n octets for exponent -%% -%% +------------+ +------------+ -%% | | | | -%% +------------+ ...+------------+ -%% p octets for pos mantissa -%% -%% S is 0 for positive sign -%% 1 for negative sign -%% BB: encoding base, 00 = 2, (01 = 8, 10 = 16) -%% 01 and 10 not used -%% FF: scale factor 00 = 0 (used in base 2 encoding) -%% EE: encoding of the exponent: -%% 00 - on the following octet -%% 01 - on the 2 following octets -%% 10 - on the 3 following octets -%% 11 - encoding of the length of the two's-complement encoding of -%% exponent on the following octet, and two's-complement -%% encoding of exponent on the other octets. -%% -%% In DER and base 2 encoding the mantissa is encoded as value 0 or -%% bit shifted until it is an odd number. Thus, do this for BER as -%% well. -%% This interface also used by RT_COMMON -encode_real(_C,{Mantissa, Base, Exponent}) when Base =:= 2 -> -%% io:format("Mantissa: ~w Base: ~w, Exp: ~w~n",[Man, Base, Exp]), - {Man,ExpAdd} = truncate_zeros(Mantissa), %% DER adjustment - Exp = Exponent + ExpAdd, - OctExp = if Exp >= 0 -> list_to_binary(encode_integer_pos(Exp, [])); - true -> list_to_binary(encode_integer_neg(Exp, [])) - end, -%% ok = io:format("OctExp: ~w~n",[OctExp]), - SignBit = if Man > 0 -> 0; % bit 7 is pos or neg, no Zeroval - true -> 1 - end, -%% ok = io:format("SignBitMask: ~w~n",[SignBitMask]), - SFactor = 0, - OctExpLen = size(OctExp), - if OctExpLen > 255 -> - exit({error,{asn1, {to_big_exp_in_encode_real, OctExpLen}}}); - true -> true %% make real assert later.. - end, - {LenCode, EOctets} = case OctExpLen of % bit 2,1 - 1 -> {0, OctExp}; - 2 -> {1, OctExp}; - 3 -> {2, OctExp}; - _ -> {3, <<OctExpLen, OctExp/binary>>} - end, - BB = 0, %% 00 for base 2 - FirstOctet = <<1:1,SignBit:1,BB:2,SFactor:2,LenCode:2>>, - OctMantissa = if Man > 0 -> list_to_binary(minimum_octets(Man)); - true -> list_to_binary(minimum_octets(-(Man))) % signbit keeps track of sign - end, - %% ok = io:format("LenMask: ~w EOctets: ~w~nFirstOctet: ~w OctMantissa: ~w OctExpLen: ~w~n", [LenMask, EOctets, FirstOctet, OctMantissa, OctExpLen]), - Bin = <<FirstOctet/binary, EOctets/binary, OctMantissa/binary>>, - {Bin, size(Bin)}; -encode_real(C,{Mantissa,Base,Exponent}) - when Base =:= 10, is_integer(Mantissa), is_integer(Exponent) -> - %% always encode as NR3 due to DER on the format - %% mmmm.Eseeee where - %% m := digit - %% s := '-' | '+' | [] - %% '+' only allowed in +0 - %% e := digit - %% ex: 1234.E-5679 -%% {Man,AddExp} = truncate_zeros(Mantissa,0), -%% ManNum = trunc(Mantissa), -%% {TruncatedMan,NumZeros} = truncate_zeros10(Mantissa), - ManStr = integer_to_list(Mantissa), - - encode_real_as_string(C,ManStr,Exponent); -encode_real(_C,{_,Base,_}) -> - exit({error,{asn1, {encode_real_non_supported_encodeing, Base}}}); -%% base 10 -encode_real(C,Real) when is_list(Real) -> - %% The Real string may come in as a NR1, NR2 or NR3 string. - {Mantissa, Exponent} = - case string:tokens(Real,"Ee") of - [NR2] -> - {NR2,0}; - [NR3MB,NR3E] -> - %% remove beginning zeros - {NR3MB,list_to_integer(NR3E)} - end, - - %% .Decimal | Number | Number.Decimal - ZeroDecimal = - fun("0") -> ""; - (L) -> L - end, - {NewMantissa,LenDecimal} = - case Mantissa of - [$.|Dec] -> - NewMan = remove_trailing_zeros(Dec), - {NewMan,length(ZeroDecimal(NewMan))}; - _ -> - case string:tokens(Mantissa,",.") of - [Num] -> %% No decimal-mark - {integer_to_list(list_to_integer(Num)),0}; - [Num,Dec] -> - NewDec = ZeroDecimal(remove_trailing_zeros(Dec)), - NewMan = integer_to_list(list_to_integer(Num)) ++ NewDec, - {integer_to_list(list_to_integer(NewMan)), - length(NewDec)} - end - end, - -% DER_Exponent = integer_to_list(Exponent - ExpReduce), - encode_real_as_string(C,NewMantissa,Exponent - LenDecimal). - -encode_real_as_string(_C,Mantissa,Exponent) - when is_list(Mantissa), is_integer(Exponent) -> - %% Remove trailing zeros in Mantissa and add this to Exponent - TruncMant = remove_trailing_zeros(Mantissa), - - ExpIncr = length(Mantissa) - length(TruncMant), - - ExpStr = integer_to_list(Exponent + ExpIncr), - - ExpBin = - case ExpStr of - "0" -> - <<"E+0">>; - _ -> - ExpB = list_to_binary(ExpStr), - <<$E,ExpB/binary>> - end, - ManBin = list_to_binary(TruncMant), - NR3 = 3, - {<<NR3,ManBin/binary,$.,ExpBin/binary>>,2 + size(ManBin) + size(ExpBin)}. - -remove_trailing_zeros(IntStr) -> - case lists:dropwhile(fun($0)-> true; - (_) -> false - end, lists:reverse(IntStr)) of - [] -> - "0"; - ReversedIntStr -> - lists:reverse(ReversedIntStr) - end. - -truncate_zeros(Num) -> - truncate_zeros(Num,0). -truncate_zeros(0,Sum) -> - {0,Sum}; -truncate_zeros(M,Sum) -> - case M band 16#f =:= M band 16#e of - true -> truncate_zeros(M bsr 1,Sum+1); - _ -> {M,Sum} - end. - - -%%============================================================================ -%% decode real value -%% -%% decode_real([OctetBufferList], tuple|value, tag|notag) -> -%% {{Mantissa, Base, Exp} | realval | PLUS-INFINITY | MINUS-INFINITY | 0, -%% RestBuff} -%% -%% only for base 2 decoding sofar!! -%%============================================================================ - -decode_real(Buffer, C, Tags, OptOrMand) -> - NewTags = new_tags(Tags,#tag{class=?UNIVERSAL,number=?N_REAL}), - decode_real_notag(Buffer, C, NewTags, OptOrMand). - -%% This interface used by RT_COMMON -decode_real(Buffer,Len) -> - decode_real2(Buffer,[],Len,0). - -decode_real_notag(Buffer, C, Tags, OptOrMand) -> - {_RestTags, {{_,Len}, Buffer0, Rb0}} = - check_tags_i(Tags, Buffer, OptOrMand), - decode_real2(Buffer0, C, Len, Rb0). - -decode_real2(Buffer, _C, 0, _RemBytes) -> - {0,Buffer}; -decode_real2(Buffer0, _C, Len, RemBytes1) -> - <<First, Buffer2/binary>> = Buffer0, - if - First =:= 2#01000000 -> {'PLUS-INFINITY', Buffer2}; - First =:= 2#01000001 -> {'MINUS-INFINITY', Buffer2}; -%% First =:= 2#00000000 -> {0, Buffer2}; - First =:= 1 orelse First =:= 2 orelse First =:= 3 -> - %% charcter string encoding of base 10 - {NRx,Rest} = split_binary(Buffer2,Len-1), - {binary_to_list(NRx),Rest,Len}; - true -> - %% have some check here to verify only supported bases (2) - %% not base 8 or 16 - <<_B7:1,Sign:1,BB:2,_FF:2,EE:2>> = <<First>>, - Base = - case BB of - 0 -> 2; % base 2, only one so far - _ -> exit({error,{asn1, {non_supported_base, BB}}}) - end, - {FirstLen, {Exp, Buffer3,_Rb2}, RemBytes2} = - case EE of - 0 -> {2, decode_integer2(1, Buffer2, RemBytes1), RemBytes1+1}; - 1 -> {3, decode_integer2(2, Buffer2, RemBytes1), RemBytes1+2}; - 2 -> {4, decode_integer2(3, Buffer2, RemBytes1), RemBytes1+3}; - 3 -> - <<ExpLen1,RestBuffer/binary>> = Buffer2, - { ExpLen1 + 2, - decode_integer2(ExpLen1, RestBuffer, RemBytes1), - RemBytes1+ExpLen1} - end, - %% io:format("FirstLen: ~w, Exp: ~w, Buffer3: ~w ~n", - - Length = Len - FirstLen, - <<LongInt:Length/unit:8,RestBuff/binary>> = Buffer3, - {{Mantissa, Buffer4}, RemBytes3} = - if Sign =:= 0 -> - %% io:format("sign plus~n"), - {{LongInt, RestBuff}, 1 + Length}; - true -> - %% io:format("sign minus~n"), - {{-LongInt, RestBuff}, 1 + Length} - end, - {{Mantissa, Base, Exp}, Buffer4, RemBytes2+RemBytes3} - end. - -encode_integer_pos(0, L=[B|_Acc]) when B < 128 -> - L; -encode_integer_pos(N, Acc) -> - encode_integer_pos((N bsr 8), [N band 16#ff| Acc]). - -encode_integer_neg(-1, L=[B1|_T]) when B1 > 127 -> - L; -encode_integer_neg(N, Acc) -> - encode_integer_neg(N bsr 8, [N band 16#ff|Acc]). - - -%%%%%%%%%%% -%% mk_object_val(Value) -> {OctetList, Len} -%% returns a Val as a list of octets, the 8 bit is allways set to one except -%% for the last octet, where its 0 -%% - - -mk_object_val(Val) when Val =< 127 -> - {[255 band Val], 1}; -mk_object_val(Val) -> - mk_object_val(Val bsr 7, [Val band 127], 1). -mk_object_val(0, Ack, Len) -> - {Ack, Len}; -mk_object_val(Val, Ack, Len) -> - mk_object_val(Val bsr 7, [((Val band 127) bor 128) | Ack], Len + 1). - - -%%============================================================================ -%% Length handling -%% -%% Encode length -%% -%% encode_length(Int | indefinite) -> -%% [<127]| [128 + Int (<127),OctetList] | [16#80] -%%============================================================================ - -encode_length(L) when L =< 16#7F -> - {[L],1}; -encode_length(L) -> - Oct = minimum_octets(L), - Len = length(Oct), - if - Len =< 126 -> - {[ (16#80+Len) | Oct ],Len+1}; - true -> - exit({error,{asn1, to_long_length_oct, Len}}) - end. - - -%% Val must be >= 0 -minimum_octets(Val) -> - minimum_octets(Val,[]). - -minimum_octets(0,Acc) -> - Acc; -minimum_octets(Val, Acc) -> - minimum_octets((Val bsr 8),[Val band 16#FF | Acc]). - - -%%=========================================================================== -%% Decode length -%% -%% decode_length(OctetList) -> {{indefinite, RestOctetsL}, NoRemovedBytes} | -%% {{Length, RestOctetsL}, NoRemovedBytes} -%%=========================================================================== - -decode_length(<<1:1,0:7,T/binary>>) -> - {{indefinite, T}, 1}; -decode_length(<<0:1,Length:7,T/binary>>) -> - {{Length,T},1}; -decode_length(<<1:1,LL:7,T/binary>>) -> - <<Length:LL/unit:8,Rest/binary>> = T, - {{Length,Rest}, LL+1}. - - -dotag([], Tag, {Bytes,Len}) -> - dotag_universal(Tag,Bytes,Len); -dotag(Tags, Tag, {Bytes,Len}) -> - encode_tags(Tags ++ [#tag{class=?UNIVERSAL,number=Tag,form=?PRIMITIVE}], - Bytes, Len). - -dotag_universal(UniversalTag,Bytes,Len) when Len =< 16#7F-> - {[UniversalTag,Len,Bytes],2+Len}; -dotag_universal(UniversalTag,Bytes,Len) -> - {EncLen,LenLen}=encode_length(Len), - {[UniversalTag,EncLen,Bytes],1+LenLen+Len}. - -%% decoding postitive integer values. -decode_integer2(Len,Bin = <<0:1,_:7,_Bs/binary>>,RemovedBytes) -> - <<Int:Len/unit:8,Buffer2/binary>> = Bin, - {Int,Buffer2,RemovedBytes}; -%% decoding negative integer values. -decode_integer2(Len,<<1:1,B2:7,Bs/binary>>,RemovedBytes) -> - <<N:Len/unit:8,Buffer2/binary>> = <<B2,Bs/binary>>, - Int = N - (1 bsl (8 * Len - 1)), - {Int,Buffer2,RemovedBytes}. - -new_tags([],LastTag) -> - [LastTag]; -new_tags(Tags = [#tag{type='IMPLICIT'}],_LastTag) -> - Tags; -new_tags([T1 = #tag{type='IMPLICIT'},#tag{type=T2Type}|Rest],LastTag) -> - new_tags([T1#tag{type=T2Type}|Rest],LastTag); -new_tags(Tags,LastTag) -> - case lists:last(Tags) of - #tag{type='IMPLICIT'} -> - Tags; - _ -> - Tags ++ [LastTag] - end. diff --git a/lib/asn1/src/asn1rt_ber_bin_v2.erl b/lib/asn1/src/asn1rt_ber_bin_v2.erl deleted file mode 100644 index 10deecee6e..0000000000 --- a/lib/asn1/src/asn1rt_ber_bin_v2.erl +++ /dev/null @@ -1,1993 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2002-2012. All Rights Reserved. -%% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% -%% --module(asn1rt_ber_bin_v2). - -%% encoding / decoding of BER - --export([decode/1, decode/2, match_tags/2, encode/1, encode/2]). --export([fixoptionals/2, - encode_tag_val/1, - encode_tags/2, - encode_tags/3, - skip_ExtensionAdditions/2]). --export([encode_boolean/2,decode_boolean/2, - encode_integer/3,encode_integer/4, - decode_integer/3, decode_integer/4, - encode_enumerated/2, - encode_enumerated/4,decode_enumerated/4, - encode_real/3,decode_real/2, - encode_bit_string/4,decode_bit_string/4, - decode_compact_bit_string/4, - encode_octet_string/3,decode_octet_string/3, - encode_null/2,decode_null/2, - encode_relative_oid/2,decode_relative_oid/2, - encode_object_identifier/2,decode_object_identifier/2, - encode_restricted_string/4,decode_restricted_string/4, - encode_universal_string/3,decode_universal_string/3, - encode_UTF8_string/3,decode_UTF8_string/2, - encode_BMP_string/3,decode_BMP_string/3, - encode_generalized_time/3,decode_generalized_time/3, - encode_utc_time/3,decode_utc_time/3, - encode_length/1,decode_length/1, - decode_tag_and_length/1]). - --export([encode_open_type/1,encode_open_type/2, - decode_open_type/2,decode_open_type/3, - decode_open_type_as_binary/2, - decode_open_type_as_binary/3]). - --export([decode_primitive_incomplete/2,decode_selective/2]). - -% the encoding of class of tag bits 8 and 7 --define(UNIVERSAL, 0). --define(APPLICATION, 16#40). --define(CONTEXT, 16#80). --define(PRIVATE, 16#C0). - -%%% primitive or constructed encoding % bit 6 --define(PRIMITIVE, 0). --define(CONSTRUCTED, 2#00100000). - -%%% The tag-number for universal types --define(N_BOOLEAN, 1). --define(N_INTEGER, 2). --define(N_BIT_STRING, 3). --define(N_OCTET_STRING, 4). --define(N_NULL, 5). --define(N_OBJECT_IDENTIFIER, 6). --define(N_OBJECT_DESCRIPTOR, 7). --define(N_EXTERNAL, 8). --define(N_REAL, 9). --define(N_ENUMERATED, 10). --define(N_EMBEDDED_PDV, 11). --define(N_SEQUENCE, 16). --define(N_SET, 17). --define(N_NumericString, 18). --define(N_PrintableString, 19). --define(N_TeletexString, 20). --define(N_VideotexString, 21). --define(N_IA5String, 22). --define(N_UTCTime, 23). --define(N_GeneralizedTime, 24). --define(N_GraphicString, 25). --define(N_VisibleString, 26). --define(N_GeneralString, 27). --define(N_UniversalString, 28). --define(N_BMPString, 30). - - -% the complete tag-word of built-in types --define(T_BOOLEAN, ?UNIVERSAL bor ?PRIMITIVE bor 1). --define(T_INTEGER, ?UNIVERSAL bor ?PRIMITIVE bor 2). --define(T_BIT_STRING, ?UNIVERSAL bor ?PRIMITIVE bor 3). % can be CONSTRUCTED --define(T_OCTET_STRING, ?UNIVERSAL bor ?PRIMITIVE bor 4). % can be CONSTRUCTED --define(T_NULL, ?UNIVERSAL bor ?PRIMITIVE bor 5). --define(T_OBJECT_IDENTIFIER,?UNIVERSAL bor ?PRIMITIVE bor 6). --define(T_OBJECT_DESCRIPTOR,?UNIVERSAL bor ?PRIMITIVE bor 7). --define(T_EXTERNAL, ?UNIVERSAL bor ?PRIMITIVE bor 8). --define(T_REAL, ?UNIVERSAL bor ?PRIMITIVE bor 9). --define(T_ENUMERATED, ?UNIVERSAL bor ?PRIMITIVE bor 10). --define(T_EMBEDDED_PDV, ?UNIVERSAL bor ?PRIMITIVE bor 11). --define(T_SEQUENCE, ?UNIVERSAL bor ?CONSTRUCTED bor 16). --define(T_SET, ?UNIVERSAL bor ?CONSTRUCTED bor 17). --define(T_NumericString, ?UNIVERSAL bor ?PRIMITIVE bor 18). %can be constructed --define(T_PrintableString, ?UNIVERSAL bor ?PRIMITIVE bor 19). %can be constructed --define(T_TeletexString, ?UNIVERSAL bor ?PRIMITIVE bor 20). %can be constructed --define(T_VideotexString, ?UNIVERSAL bor ?PRIMITIVE bor 21). %can be constructed --define(T_IA5String, ?UNIVERSAL bor ?PRIMITIVE bor 22). %can be constructed --define(T_UTCTime, ?UNIVERSAL bor ?PRIMITIVE bor 23). --define(T_GeneralizedTime, ?UNIVERSAL bor ?PRIMITIVE bor 24). --define(T_GraphicString, ?UNIVERSAL bor ?PRIMITIVE bor 25). %can be constructed --define(T_VisibleString, ?UNIVERSAL bor ?PRIMITIVE bor 26). %can be constructed --define(T_GeneralString, ?UNIVERSAL bor ?PRIMITIVE bor 27). %can be constructed --define(T_UniversalString, ?UNIVERSAL bor ?PRIMITIVE bor 28). %can be constructed --define(T_BMPString, ?UNIVERSAL bor ?PRIMITIVE bor 30). %can be constructed - -% encode(Tlv={_Tag={?PRIMITIVE,_},_VList}) -> -% encode_primitive(Tlv); -% encode(Tlv) -> -% encode_constructed(Tlv). - -encode(Tlv) -> - encode(Tlv,erlang). - -encode(Tlv,_) when is_binary(Tlv) -> - Tlv; -encode([Tlv],Method) -> - encode(Tlv,Method); -encode(Tlv, nif) -> - asn1rt_nif:encode_ber_tlv(Tlv); -encode(Tlv, _) -> - encode_erl(Tlv). - -encode_erl({TlvTag,TlvVal}) when is_list(TlvVal) -> - %% constructed form of value - encode_tlv(TlvTag,TlvVal,?CONSTRUCTED); -encode_erl({TlvTag,TlvVal}) -> - encode_tlv(TlvTag,TlvVal,?PRIMITIVE). - -encode_tlv(TlvTag,TlvVal,Form) -> - Tag = encode_tlv_tag(TlvTag,Form), - {Val,VLen} = encode_tlv_val(TlvVal), - {Len,_LLen} = encode_length(VLen), - BinLen = list_to_binary(Len), - <<Tag/binary,BinLen/binary,Val/binary>>. - -encode_tlv_tag(ClassTagNo,Form) -> - Class = ClassTagNo bsr 16, - encode_tag_val({Class bsl 6,Form,(ClassTagNo - (Class bsl 16))}). - -encode_tlv_val(TlvL) when is_list(TlvL) -> - encode_tlv_list(TlvL,[]); -encode_tlv_val(Bin) -> - {Bin,size(Bin)}. - -encode_tlv_list([Tlv|Tlvs],Acc) -> - EncTlv = encode_erl(Tlv), - encode_tlv_list(Tlvs,[EncTlv|Acc]); -encode_tlv_list([],Acc) -> - Bin=list_to_binary(lists:reverse(Acc)), - {Bin,size(Bin)}. - -decode(B) -> - decode(B, erlang). - -%% asn1-1.7 -decode(B, nif) -> - case asn1rt_nif:decode_ber_tlv(B) of - {error, Reason} -> handle_error(Reason, B); - Else -> Else - end; -decode(B,erlang) when is_binary(B) -> - decode_primitive(B); -decode(Tlv,erlang) -> - {Tlv,<<>>}. - -handle_error([],_)-> - exit({error,{asn1,{"memory allocation problem"}}}); -handle_error({$1,_},L) -> % error in nif - exit({error,{asn1,L}}); -handle_error({$2,T},L) -> % error in nif due to wrong tag - exit({error,{asn1,{"bad tag after byte:",error_pos(T),L}}}); -handle_error({$3,T},L) -> % error in driver due to length error - exit({error,{asn1,{"bad length field after byte:", - error_pos(T),L}}}); -handle_error({$4,T},L) -> % error in driver due to indefinite length error - exit({error,{asn1, - {"indefinite length without end bytes after byte:", - error_pos(T),L}}}); -handle_error({$5,T},L) -> % error in driver due to indefinite length error - exit({error,{asn1,{"bad encoded value after byte:", - error_pos(T),L}}}); -handle_error(ErrL,L) -> - exit({error,{asn1,ErrL,L}}). - -error_pos([]) -> - "unknown position"; -error_pos([B])-> - B; -error_pos([B|Bs]) -> - BS = 8 * length(Bs), - B bsl BS + error_pos(Bs). - -decode_primitive(Bin) -> - {Form,TagNo,V,Rest} = decode_tag_and_length(Bin), - case Form of - 1 -> % constructed - {{TagNo,decode_constructed(V)},Rest}; - 0 -> % primitive - {{TagNo,V},Rest}; - 2 -> % constructed indefinite - {Vlist,Rest2} = decode_constructed_indefinite(V,[]), - {{TagNo,Vlist},Rest2} - end. - -decode_constructed(Bin) when byte_size(Bin) =:= 0 -> - []; -decode_constructed(Bin) -> - {Tlv,Rest} = decode_primitive(Bin), - [Tlv|decode_constructed(Rest)]. - -decode_constructed_indefinite(<<0,0,Rest/binary>>,Acc) -> - {lists:reverse(Acc),Rest}; -decode_constructed_indefinite(Bin,Acc) -> - {Tlv,Rest} = decode_primitive(Bin), - decode_constructed_indefinite(Rest, [Tlv|Acc]). - -%% decode_primitive_incomplete/2 decodes an encoded message incomplete -%% by help of the pattern attribute (first argument). -decode_primitive_incomplete([[default,TagNo]],Bin) -> %default - case decode_tag_and_length(Bin) of - {Form,TagNo,V,Rest} -> - decode_incomplete2(Form,TagNo,V,[],Rest); - _ -> - %{asn1_DEFAULT,Bin} - asn1_NOVALUE - end; -decode_primitive_incomplete([[default,TagNo,Directives]],Bin) -> %default, constructed type, Directives points into this type - case decode_tag_and_length(Bin) of - {Form,TagNo,V,Rest} -> - decode_incomplete2(Form,TagNo,V,Directives,Rest); - _ -> - %{asn1_DEFAULT,Bin} - asn1_NOVALUE - end; -decode_primitive_incomplete([[opt,TagNo]],Bin) -> %optional - case decode_tag_and_length(Bin) of - {Form,TagNo,V,Rest} -> - decode_incomplete2(Form,TagNo,V,[],Rest); - _ -> - %{{TagNo,asn1_NOVALUE},Bin} - asn1_NOVALUE - end; -decode_primitive_incomplete([[opt,TagNo,Directives]],Bin) -> %optional - case decode_tag_and_length(Bin) of - {Form,TagNo,V,Rest} -> - decode_incomplete2(Form,TagNo,V,Directives,Rest); - _ -> - %{{TagNo,asn1_NOVALUE},Bin} - asn1_NOVALUE - end; -%% An optional that shall be undecoded -decode_primitive_incomplete([[opt_undec,Tag]],Bin) -> - case decode_tag_and_length(Bin) of - {_,Tag,_,_} -> - decode_incomplete_bin(Bin); - _ -> - asn1_NOVALUE - end; -%% A choice alternative that shall be undecoded -decode_primitive_incomplete([[alt_undec,TagNo]|RestAlts],Bin) -> -% decode_incomplete_bin(Bin); -% case decode_tlv(Bin) of - case decode_tag_and_length(Bin) of -% {{_Form,TagNo,_Len,_V},_R} -> - {_,TagNo,_,_} -> - decode_incomplete_bin(Bin); - _ -> - decode_primitive_incomplete(RestAlts,Bin) - end; -decode_primitive_incomplete([[alt,TagNo]|RestAlts],Bin) -> - case decode_tag_and_length(Bin) of - {_Form,TagNo,V,Rest} -> - {{TagNo,V},Rest}; - _ -> - decode_primitive_incomplete(RestAlts,Bin) - end; -decode_primitive_incomplete([[alt,TagNo,Directives]|RestAlts],Bin) -> - case decode_tag_and_length(Bin) of - {Form,TagNo,V,Rest} -> - decode_incomplete2(Form,TagNo,V,Directives,Rest); - _ -> - decode_primitive_incomplete(RestAlts,Bin) - end; -decode_primitive_incomplete([[alt_parts,TagNo]],Bin) -> - case decode_tag_and_length(Bin) of - {_Form,TagNo,V,Rest} -> - {{TagNo,V},Rest}; - _ -> - asn1_NOVALUE - end; -decode_primitive_incomplete([[alt_parts,TagNo]|RestAlts],Bin) -> - case decode_tag_and_length(Bin) of - {_Form,TagNo,V,Rest} -> - {{TagNo,decode_parts_incomplete(V)},Rest}; - _ -> - decode_primitive_incomplete(RestAlts,Bin) - end; -decode_primitive_incomplete([[undec,_TagNo]|_RestTag],Bin) -> %incomlete decode - decode_incomplete_bin(Bin); -decode_primitive_incomplete([[parts,TagNo]|_RestTag],Bin) -> - case decode_tag_and_length(Bin) of - {_Form,TagNo,V,Rest} -> - {{TagNo,decode_parts_incomplete(V)},Rest}; - Err -> - {error,{asn1,"tag failure",TagNo,Err}} - end; -decode_primitive_incomplete([mandatory|RestTag],Bin) -> - {Form,TagNo,V,Rest} = decode_tag_and_length(Bin), - decode_incomplete2(Form,TagNo,V,RestTag,Rest); -%% A choice that is a toptype or a mandatory component of a -%% SEQUENCE or SET. -decode_primitive_incomplete([[mandatory|Directives]],Bin) -> - {Form,TagNo,V,Rest} = decode_tag_and_length(Bin), - decode_incomplete2(Form,TagNo,V,Directives,Rest); -decode_primitive_incomplete([],Bin) -> - decode_primitive(Bin). - -%% decode_parts_incomplete/1 receives a number of values encoded in -%% sequence and returns the parts as unencoded binaries -decode_parts_incomplete(<<>>) -> - []; -decode_parts_incomplete(Bin) -> - {ok,Rest} = skip_tag(Bin), - {ok,Rest2} = skip_length_and_value(Rest), - LenPart = size(Bin) - size(Rest2), - <<Part:LenPart/binary,RestBin/binary>> = Bin, - [Part|decode_parts_incomplete(RestBin)]. - - -%% decode_incomplete2 checks if V is a value of a constructed or -%% primitive type, and continues the decode propeerly. -decode_incomplete2(_Form=2,TagNo,V,TagMatch,_) -> - %% constructed indefinite length - {Vlist,Rest2} = decode_constr_indef_incomplete(TagMatch,V,[]), - {{TagNo,Vlist},Rest2}; -decode_incomplete2(1,TagNo,V,[TagMatch],Rest) when is_list(TagMatch) -> - {{TagNo,decode_constructed_incomplete(TagMatch,V)},Rest}; -decode_incomplete2(1,TagNo,V,TagMatch,Rest) -> - {{TagNo,decode_constructed_incomplete(TagMatch,V)},Rest}; -decode_incomplete2(0,TagNo,V,_TagMatch,Rest) -> - {{TagNo,V},Rest}. - -decode_constructed_incomplete([Tags=[Ts]],Bin) when is_list(Ts) -> - decode_constructed_incomplete(Tags,Bin); -decode_constructed_incomplete(_TagMatch,<<>>) -> - []; -decode_constructed_incomplete([mandatory|RestTag],Bin) -> - {Tlv,Rest} = decode_primitive(Bin), - [Tlv|decode_constructed_incomplete(RestTag,Rest)]; -decode_constructed_incomplete(Directives=[[Alt,_]|_],Bin) - when Alt == alt_undec; Alt == alt; Alt == alt_parts -> - {_Form,TagNo,V,Rest} = decode_tag_and_length(Bin), - case incomplete_choice_alt(TagNo,Directives) of - {alt_undec,_} -> - LenA = size(Bin)-size(Rest), - <<A:LenA/binary,Rest/binary>> = Bin, - A; - {alt,InnerDirectives} -> - {Tlv,Rest} = decode_primitive_incomplete(InnerDirectives,V), - {TagNo,Tlv}; - {alt_parts,_} -> - [{TagNo,decode_parts_incomplete(V)}]; - no_match -> %% if a choice alternative was encoded that - %% was not specified in the config file, - %% thus decode component anonomous. - {Tlv,_}=decode_primitive(Bin), - Tlv - end; -decode_constructed_incomplete([TagNo|RestTag],Bin) -> -%% {Tlv,Rest} = decode_primitive_incomplete([TagNo],Bin), - case decode_primitive_incomplete([TagNo],Bin) of - {Tlv,Rest} -> - [Tlv|decode_constructed_incomplete(RestTag,Rest)]; - asn1_NOVALUE -> - decode_constructed_incomplete(RestTag,Bin) - end; -decode_constructed_incomplete([],Bin) -> - {Tlv,Rest}=decode_primitive(Bin), - [Tlv|decode_constructed_incomplete([],Rest)]. - -decode_constr_indef_incomplete(_TagMatch,<<0,0,Rest/binary>>,Acc) -> - {lists:reverse(Acc),Rest}; -decode_constr_indef_incomplete([Tag|RestTags],Bin,Acc) -> -% {Tlv,Rest} = decode_primitive_incomplete([Tag],Bin), - case decode_primitive_incomplete([Tag],Bin) of - {Tlv,Rest} -> - decode_constr_indef_incomplete(RestTags,Rest,[Tlv|Acc]); - asn1_NOVALUE -> - decode_constr_indef_incomplete(RestTags,Bin,Acc) - end. - - -decode_incomplete_bin(Bin) -> - {ok,Rest} = skip_tag(Bin), - {ok,Rest2} = skip_length_and_value(Rest), - IncLen = size(Bin) - size(Rest2), - <<IncBin:IncLen/binary,Ret/binary>> = Bin, - {IncBin,Ret}. - -incomplete_choice_alt(TagNo,[[Alt,TagNo]|Directives]) -> - {Alt,Directives}; -incomplete_choice_alt(TagNo,[D]) when is_list(D) -> - incomplete_choice_alt(TagNo,D); -incomplete_choice_alt(TagNo,[_H|Directives]) -> - incomplete_choice_alt(TagNo,Directives); -incomplete_choice_alt(_,[]) -> - no_match. - - - - -%% decode_selective(Pattern, Binary) the first argument is a pattern that tells -%% what to do with the next element the second is the BER encoded -%% message as a binary -%% Returns {ok,Value} or {error,Reason} -%% Value is a binary that in turn must be decoded to get the decoded -%% value. -decode_selective([],Binary) -> - {ok,Binary}; -decode_selective([skip|RestPattern],Binary)-> - {ok,RestBinary}=skip_tag(Binary), - {ok,RestBinary2}=skip_length_and_value(RestBinary), - decode_selective(RestPattern,RestBinary2); -decode_selective([[skip_optional,Tag]|RestPattern],Binary) -> - case skip_optional_tag(Tag,Binary) of - {ok,RestBinary} -> - {ok,RestBinary2}=skip_length_and_value(RestBinary), - decode_selective(RestPattern,RestBinary2); - missing -> - decode_selective(RestPattern,Binary) - end; -decode_selective([[choosen,Tag]],Binary) -> - return_value(Tag,Binary); -% case skip_optional_tag(Tag,Binary) of %may be optional/default -% {ok,RestBinary} -> -% {ok,Value} = get_value(RestBinary); -% missing -> -% {ok,<<>>} -% end; -decode_selective([[choosen,Tag]|RestPattern],Binary) -> - case skip_optional_tag(Tag,Binary) of - {ok,RestBinary} -> - {ok,Value} = get_value(RestBinary), - decode_selective(RestPattern,Value); - missing -> - {ok,<<>>} - end; -decode_selective(P,_) -> - {error,{asn1,{partial_decode,"bad pattern",P}}}. - -return_value(Tag,Binary) -> - {ok,{Tag,RestBinary}}=get_tag(Binary), - {ok,{LenVal,_RestBinary2}} = get_length_and_value(RestBinary), - {ok,<<Tag/binary,LenVal/binary>>}. - - -%% skip_tag and skip_length_and_value are rutines used both by -%% decode_partial_incomplete and decode_selective (decode/2). - -skip_tag(<<_:3,31:5,Rest/binary>>)-> - skip_long_tag(Rest); -skip_tag(<<_:3,_Tag:5,Rest/binary>>) -> - {ok,Rest}. - -skip_long_tag(<<1:1,_:7,Rest/binary>>) -> - skip_long_tag(Rest); -skip_long_tag(<<0:1,_:7,Rest/binary>>) -> - {ok,Rest}. - -skip_optional_tag(<<>>,Binary) -> - {ok,Binary}; -skip_optional_tag(<<Tag,RestTag/binary>>,<<Tag,Rest/binary>>) -> - skip_optional_tag(RestTag,Rest); -skip_optional_tag(_,_) -> - missing. - - - - -skip_length_and_value(Binary) -> - case decode_length(Binary) of - {indefinite,RestBinary} -> - skip_indefinite_value(RestBinary); - {Length,RestBinary} -> - <<_:Length/unit:8,Rest/binary>> = RestBinary, - {ok,Rest} - end. - -skip_indefinite_value(<<0,0,Rest/binary>>) -> - {ok,Rest}; -skip_indefinite_value(Binary) -> - {ok,RestBinary}=skip_tag(Binary), - {ok,RestBinary2} = skip_length_and_value(RestBinary), - skip_indefinite_value(RestBinary2). - -get_value(Binary) -> - case decode_length(Binary) of - {indefinite,RestBinary} -> - get_indefinite_value(RestBinary,[]); - {Length,RestBinary} -> - <<Value:Length/binary,_Rest/binary>> = RestBinary, - {ok,Value} - end. - -get_indefinite_value(<<0,0,_Rest/binary>>,Acc) -> - {ok,list_to_binary(lists:reverse(Acc))}; -get_indefinite_value(Binary,Acc) -> - {ok,{Tag,RestBinary}}=get_tag(Binary), - {ok,{LenVal,RestBinary2}} = get_length_and_value(RestBinary), - get_indefinite_value(RestBinary2,[LenVal,Tag|Acc]). - -get_tag(<<H:1/binary,Rest/binary>>) -> - case H of - <<_:3,31:5>> -> - get_long_tag(Rest,[H]); - _ -> {ok,{H,Rest}} - end. -get_long_tag(<<H:1/binary,Rest/binary>>,Acc) -> - case H of - <<0:1,_:7>> -> - {ok,{list_to_binary(lists:reverse([H|Acc])),Rest}}; - _ -> - get_long_tag(Rest,[H|Acc]) - end. - -get_length_and_value(Bin = <<0:1,Length:7,_T/binary>>) -> - <<Len,Val:Length/binary,Rest/binary>> = Bin, - {ok,{<<Len,Val/binary>>, Rest}}; -get_length_and_value(Bin = <<1:1,0:7,_T/binary>>) -> - get_indefinite_length_and_value(Bin); -get_length_and_value(<<1:1,LL:7,T/binary>>) -> - <<Length:LL/unit:8,Rest/binary>> = T, - <<Value:Length/binary,Rest2/binary>> = Rest, - {ok,{<<1:1,LL:7,Length:LL/unit:8,Value/binary>>,Rest2}}. - -get_indefinite_length_and_value(<<H,T/binary>>) -> - get_indefinite_length_and_value(T,[H]). - -get_indefinite_length_and_value(<<0,0,Rest/binary>>,Acc) -> - {ok,{list_to_binary(lists:reverse(Acc)),Rest}}; -get_indefinite_length_and_value(Binary,Acc) -> - {ok,{Tag,RestBinary}}=get_tag(Binary), - {ok,{LenVal,RestBinary2}}=get_length_and_value(RestBinary), - get_indefinite_length_and_value(RestBinary2,[LenVal,Tag|Acc]). - - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% match_tags takes a Tlv (Tag, Length, Value) structure and matches -%% it with the tags in TagList. If the tags does not match the function -%% crashes otherwise it returns the remaining Tlv after that the tags have -%% been removed. -%% -%% match_tags(Tlv, TagList) -%% - -match_tags({T,V},[T]) -> - V; -match_tags({T,V}, [T|Tt]) -> - match_tags(V,Tt); -match_tags([{T,V}],[T|Tt]) -> - match_tags(V, Tt); -match_tags(Vlist = [{T,_V}|_], [T]) -> - Vlist; -match_tags(Tlv, []) -> - Tlv; -match_tags(Tlv = {Tag,_V},[T|_Tt]) -> - exit({error,{asn1,{wrong_tag,{{expected,T},{got,Tag,Tlv}}}}}). - -%%% -%% skips components that do not match a tag in Tags -skip_ExtensionAdditions([],_Tags) -> - []; -skip_ExtensionAdditions(TLV=[{Tag,_}|Rest],Tags) -> - case [X||X=T<-Tags,T==Tag] of - [] -> - %% skip this TLV and continue with next - skip_ExtensionAdditions(Rest,Tags); - _ -> - TLV - end. - - -%%=============================================================================== -%%=============================================================================== -%%=============================================================================== -%% Optionals, preset not filled optionals with asn1_NOVALUE -%%=============================================================================== -%%=============================================================================== -%%=============================================================================== - -fixoptionals(OptList,Val) when is_list(Val) -> - fixoptionals(OptList,Val,1,[],[]). - -fixoptionals([{Name,Pos}|Ot],[{Name,Val}|Vt],_Opt,Acc1,Acc2) -> - fixoptionals(Ot,Vt,Pos+1,[1|Acc1],[{Name,Val}|Acc2]); -fixoptionals([{_Name,Pos}|Ot],V,Pos,Acc1,Acc2) -> - fixoptionals(Ot,V,Pos+1,[0|Acc1],[asn1_NOVALUE|Acc2]); -fixoptionals(O,[Vh|Vt],Pos,Acc1,Acc2) -> - fixoptionals(O,Vt,Pos+1,Acc1,[Vh|Acc2]); -fixoptionals([],[Vh|Vt],Pos,Acc1,Acc2) -> - fixoptionals([],Vt,Pos+1,Acc1,[Vh|Acc2]); -fixoptionals([],[],_,_Acc1,Acc2) -> - % return Val as a record - list_to_tuple([asn1_RECORDNAME|lists:reverse(Acc2)]). - - -%%encode_tag(TagClass(?UNI, APP etc), Form (?PRIM etx), TagInteger) -> -%% 8bit Int | binary -encode_tag_val({Class, Form, TagNo}) when (TagNo =< 30) -> - <<(Class bsr 6):2,(Form bsr 5):1,TagNo:5>>; - -encode_tag_val({Class, Form, TagNo}) -> - {Octets,_Len} = mk_object_val(TagNo), - BinOct = list_to_binary(Octets), - <<(Class bsr 6):2, (Form bsr 5):1, 31:5,BinOct/binary>>. - - -%%=============================================================================== -%% Decode a tag -%% -%% decode_tag(OctetListBuffer) -> {{Form, (Class bsl 16)+ TagNo}, RestOfBuffer, RemovedBytes} -%%=============================================================================== - -decode_tag_and_length(<<Class:2, Form:1, TagNo:5, 0:1, Length:7, V:Length/binary, RestBuffer/binary>>) when TagNo < 31 -> - {Form, (Class bsl 16) + TagNo, V, RestBuffer}; -decode_tag_and_length(<<Class:2, 1:1, TagNo:5, 1:1, 0:7, T/binary>>) when TagNo < 31 -> - {2, (Class bsl 16) + TagNo, T, <<>>}; -decode_tag_and_length(<<Class:2, Form:1, TagNo:5, 1:1, LL:7, Length:LL/unit:8,V:Length/binary, T/binary>>) when TagNo < 31 -> - {Form, (Class bsl 16) + TagNo, V, T}; -decode_tag_and_length(<<Class:2, Form:1, 31:5, 0:1, TagNo:7, 0:1, Length:7, V:Length/binary, RestBuffer/binary>>) -> - {Form, (Class bsl 16) + TagNo, V, RestBuffer}; -decode_tag_and_length(<<Class:2, 1:1, 31:5, 0:1, TagNo:7, 1:1, 0:7, T/binary>>) -> - {2, (Class bsl 16) + TagNo, T, <<>>}; -decode_tag_and_length(<<Class:2, Form:1, 31:5, 0:1, TagNo:7, 1:1, LL:7, Length:LL/unit:8, V:Length/binary, T/binary>>) -> - {Form, (Class bsl 16) + TagNo, V, T}; -decode_tag_and_length(<<Class:2, Form:1, 31:5, 1:1, TagPart1:7, 0:1, TagPartLast, Buffer/binary>>) -> - TagNo = (TagPart1 bsl 7) bor TagPartLast, - {Length, RestBuffer} = decode_length(Buffer), - << V:Length/binary, RestBuffer2/binary>> = RestBuffer, - {Form, (Class bsl 16) + TagNo, V, RestBuffer2}; -decode_tag_and_length(<<Class:2, Form:1, 31:5, Buffer/binary>>) -> - {TagNo, Buffer1} = decode_tag(Buffer, 0), - {Length, RestBuffer} = decode_length(Buffer1), - << V:Length/binary, RestBuffer2/binary>> = RestBuffer, - {Form, (Class bsl 16) + TagNo, V, RestBuffer2}. - - - -%% last partial tag -decode_tag(<<0:1,PartialTag:7, Buffer/binary>>, TagAck) -> - TagNo = (TagAck bsl 7) bor PartialTag, - %%<<TagNo>> = <<TagAck:1, PartialTag:7>>, - {TagNo, Buffer}; -% more tags -decode_tag(<<_:1,PartialTag:7, Buffer/binary>>, TagAck) -> - TagAck1 = (TagAck bsl 7) bor PartialTag, - %%<<TagAck1:16>> = <<TagAck:1, PartialTag:7,0:8>>, - decode_tag(Buffer, TagAck1). - - -%%======================================================================= -%% -%% Encode all tags in the list Tags and return a possibly deep list of -%% bytes with tag and length encoded -%% The taglist must be in reverse order (fixed by the asn1 compiler) -%% e.g [T1,T2] will result in -%% {[EncodedT2,EncodedT1|BytesSoFar],LenSoFar+LenT2+LenT1} -%% - -encode_tags([Tag|Trest], BytesSoFar, LenSoFar) -> -% remove {Bytes1,L1} = encode_one_tag(Tag), - {Bytes2,L2} = encode_length(LenSoFar), - encode_tags(Trest, [Tag,Bytes2|BytesSoFar], - LenSoFar + size(Tag) + L2); -encode_tags([], BytesSoFar, LenSoFar) -> - {BytesSoFar,LenSoFar}. - -encode_tags(TagIn, {BytesSoFar,LenSoFar}) -> - encode_tags(TagIn, BytesSoFar, LenSoFar). - -% encode_one_tag(#tag{class=Class,number=No,type=Type, form = Form}) -> -% NewForm = case Type of -% 'EXPLICIT' -> -% ?CONSTRUCTED; -% _ -> -% Form -% end, -% Bytes = encode_tag_val({Class,NewForm,No}), -% {Bytes,size(Bytes)}. - - -%%=============================================================================== -%% -%% This comment is valid for all the encode/decode functions -%% -%% C = Constraint -> typically {'ValueRange',LowerBound,UpperBound} -%% used for PER-coding but not for BER-coding. -%% -%% Val = Value. If Val is an atom then it is a symbolic integer value -%% (i.e the atom must be one of the names in the NamedNumberList). -%% The NamedNumberList is used to translate the atom to an integer value -%% before encoding. -%% -%%=============================================================================== - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_open_type(Value) -> io_list (i.e nested list with integers, binaries) -%% Value = list of bytes of an already encoded value (the list must be flat) -%% | binary - -%% -encode_open_type(Val) when is_list(Val) -> -% {Val,length(Val)}; - encode_open_type(list_to_binary(Val)); -encode_open_type(Val) -> - {Val, size(Val)}. - -%% -encode_open_type(Val, T) when is_list(Val) -> - encode_open_type(list_to_binary(Val),T); -encode_open_type(Val,[]) -> - {Val, size(Val)}; -encode_open_type(Val,Tag) -> - encode_tags(Tag,Val, size(Val)). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_open_type(Tlv, TagIn) -> Value -%% Tlv = {Tag,V} | V where V -> binary() -%% TagIn = [TagVal] where TagVal -> int() -%% Value = binary with decoded data (which must be decoded again as some type) -%% -decode_open_type(Tlv, TagIn) -> - decode_open_type(Tlv, TagIn, erlang). -decode_open_type(Tlv, TagIn, Method) -> - case match_tags(Tlv,TagIn) of - Bin when is_binary(Bin) -> - {InnerTlv,_} = decode(Bin,Method), - InnerTlv; - TlvBytes -> TlvBytes - end. - - -decode_open_type_as_binary(Tlv, TagIn) -> - decode_open_type_as_binary(Tlv, TagIn, erlang). -decode_open_type_as_binary(Tlv,TagIn, Method)-> - case match_tags(Tlv,TagIn) of - V when is_binary(V) -> - V; - [Tlv2] -> encode(Tlv2, Method); - Tlv2 -> encode(Tlv2, Method) - end. - -%%=============================================================================== -%%=============================================================================== -%%=============================================================================== -%% Boolean, ITU_T X.690 Chapter 8.2 -%%=============================================================================== -%%=============================================================================== -%%=============================================================================== - -%%=============================================================================== -%% encode_boolean(Integer, ReversedTagList) -> {[Octet],Len} -%%=============================================================================== - -encode_boolean({Name, Val}, TagIn) when is_atom(Name) -> - encode_boolean(Val, TagIn); -encode_boolean(true, TagIn) -> - encode_tags(TagIn, [16#FF],1); -encode_boolean(false, TagIn) -> - encode_tags(TagIn, [0],1); -encode_boolean(X,_) -> - exit({error,{asn1, {encode_boolean, X}}}). - - -%%=============================================================================== -%% decode_boolean(BuffList, HasTag, TotalLen) -> {true, Remain, RemovedBytes} | -%% {false, Remain, RemovedBytes} -%%=============================================================================== -decode_boolean(Tlv,TagIn) -> - Val = match_tags(Tlv, TagIn), - case Val of - <<0:8>> -> - false; - <<_:8>> -> - true; - _ -> - exit({error,{asn1, {decode_boolean, Val}}}) - end. - - -%%=========================================================================== -%% Integer, ITU_T X.690 Chapter 8.3 - -%% encode_integer(Constraint, Value, Tag) -> [octet list] -%% encode_integer(Constraint, Name, NamedNumberList, Tag) -> [octet list] -%% Value = INTEGER | {Name,INTEGER} -%% Tag = tag | notag -%%=========================================================================== - -encode_integer(C, Val, Tag) when is_integer(Val) -> - encode_tags(Tag, encode_integer(C, Val)); -encode_integer(C,{Name,Val},Tag) when is_atom(Name) -> - encode_integer(C,Val,Tag); -encode_integer(_C, Val, _Tag) -> - exit({error,{asn1, {encode_integer, Val}}}). - - - -encode_integer(C, Val, NamedNumberList, Tag) when is_atom(Val) -> - case lists:keysearch(Val, 1, NamedNumberList) of - {value,{_, NewVal}} -> - encode_tags(Tag, encode_integer(C, NewVal)); - _ -> - exit({error,{asn1, {encode_integer_namednumber, Val}}}) - end; -encode_integer(C,{_Name,Val},NamedNumberList,Tag) -> - encode_integer(C,Val,NamedNumberList,Tag); -encode_integer(C, Val, _NamedNumberList, Tag) -> - encode_tags(Tag, encode_integer(C, Val)). - - -encode_integer(_, Val) -> - Bytes = - if - Val >= 0 -> - encode_integer_pos(Val, []); - true -> - encode_integer_neg(Val, []) - end, - {Bytes,length(Bytes)}. - -encode_integer_pos(0, L=[B|_Acc]) when B < 128 -> - L; -encode_integer_pos(N, Acc) -> - encode_integer_pos((N bsr 8), [N band 16#ff| Acc]). - -encode_integer_neg(-1, L=[B1|_T]) when B1 > 127 -> - L; -encode_integer_neg(N, Acc) -> - encode_integer_neg(N bsr 8, [N band 16#ff|Acc]). - -%%=============================================================================== -%% decode integer -%% (Buffer, Range, HasTag, TotalLen) -> {Integer, Remain, RemovedBytes} -%% (Buffer, Range, NamedNumberList, HasTag, TotalLen) -> {Integer, Remain, RemovedBytes} -%%=============================================================================== - -decode_integer(Tlv,Range,NamedNumberList,TagIn) -> - V = match_tags(Tlv,TagIn), - Int = decode_integer(V), - range_check_integer(Int,Range), - number2name(Int,NamedNumberList). - -decode_integer(Tlv,Range,TagIn) -> - V = match_tags(Tlv, TagIn), - Int = decode_integer(V), - range_check_integer(Int,Range), - Int. - -%% decoding postitive integer values. -decode_integer(Bin = <<0:1,_:7,_/binary>>) -> - Len = size(Bin), -% <<Int:Len/unit:8,Buffer2/binary>> = Bin, - <<Int:Len/unit:8>> = Bin, - Int; -%% decoding negative integer values. -decode_integer(Bin = <<1:1,B2:7,Bs/binary>>) -> - Len = size(Bin), -% <<N:Len/unit:8,Buffer2/binary>> = <<B2,Bs/binary>>, - <<N:Len/unit:8>> = <<B2,Bs/binary>>, - Int = N - (1 bsl (8 * Len - 1)), - Int. - -range_check_integer(Int,Range) -> - case Range of - [] -> % No length constraint - Int; - {Lb,Ub} when Int >= Lb, Ub >= Int -> % variable length constraint - Int; - Int -> % fixed value constraint - Int; - {_,_} -> - exit({error,{asn1,{integer_range,Range,Int}}}); - SingleValue when is_integer(SingleValue) -> - exit({error,{asn1,{integer_range,Range,Int}}}); - _ -> % some strange constraint that we don't support yet - Int - end. - -number2name(Int,[]) -> - Int; -number2name(Int,NamedNumberList) -> - case lists:keysearch(Int, 2, NamedNumberList) of - {value,{NamedVal, _}} -> - NamedVal; - _ -> - Int - end. - - -%%============================================================================ -%% Enumerated value, ITU_T X.690 Chapter 8.4 - -%% encode enumerated value -%%============================================================================ -encode_enumerated(Val, TagIn) when is_integer(Val)-> - encode_tags(TagIn, encode_integer(false,Val)); -encode_enumerated({Name,Val}, TagIn) when is_atom(Name) -> - encode_enumerated(Val, TagIn). - -%% The encode_enumerated functions below this line can be removed when the -%% new code generation is stable. (the functions might have to be kept here -%% a while longer for compatibility reasons) - -encode_enumerated(C, Val, {NamedNumberList,ExtList}, TagIn) when is_atom(Val) -> - case catch encode_enumerated(C, Val, NamedNumberList, TagIn) of - {'EXIT',_} -> encode_enumerated(C, Val, ExtList, TagIn); - Result -> Result - end; - -encode_enumerated(C, Val, NamedNumberList, TagIn) when is_atom(Val) -> - case lists:keysearch(Val, 1, NamedNumberList) of - {value, {_, NewVal}} -> - encode_tags(TagIn, encode_integer(C, NewVal)); - _ -> - exit({error,{asn1, {enumerated_not_in_range, Val}}}) - end; - -encode_enumerated(C, {asn1_enum, Val}, {_,_}, TagIn) when is_integer(Val) -> - encode_tags(TagIn, encode_integer(C,Val)); - -encode_enumerated(C, {Name,Val}, NamedNumberList, TagIn) when is_atom(Name) -> - encode_enumerated(C, Val, NamedNumberList, TagIn); - -encode_enumerated(_C, Val, _NamedNumberList, _TagIn) -> - exit({error,{asn1, {enumerated_not_namednumber, Val}}}). - - - -%%============================================================================ -%% decode enumerated value -%% (Buffer, Range, NamedNumberList, HasTag, TotalLen) -> Value -%%=========================================================================== -decode_enumerated(Tlv, Range, NamedNumberList, Tags) -> - Buffer = match_tags(Tlv,Tags), - decode_enumerated_notag(Buffer, Range, NamedNumberList, Tags). - -decode_enumerated_notag(Buffer, _Range, {NamedNumberList,ExtList}, _Tags) -> - - IVal = decode_integer2(size(Buffer), Buffer), - case decode_enumerated1(IVal, NamedNumberList) of - {asn1_enum,IVal} -> - decode_enumerated1(IVal,ExtList); - EVal -> - EVal - end; -decode_enumerated_notag(Buffer, _Range, NNList, _Tags) -> - IVal = decode_integer2(size(Buffer), Buffer), - case decode_enumerated1(IVal, NNList) of - {asn1_enum,_} -> - exit({error,{asn1, {illegal_enumerated, IVal}}}); - EVal -> - EVal - end. - -decode_enumerated1(Val, NamedNumberList) -> - %% it must be a named integer - case lists:keysearch(Val, 2, NamedNumberList) of - {value,{NamedVal, _}} -> - NamedVal; - _ -> - {asn1_enum,Val} - end. - - -%%============================================================================ -%% -%% Real value, ITU_T X.690 Chapter 8.5 -%%============================================================================ -%% -%% encode real value -%%============================================================================ - -%% only base 2 internally so far!! -encode_real(_C,0, TagIn) -> - encode_tags(TagIn, {[],0}); -encode_real(_C,'PLUS-INFINITY', TagIn) -> - encode_tags(TagIn, {[64],1}); -encode_real(_C,'MINUS-INFINITY', TagIn) -> - encode_tags(TagIn, {[65],1}); -encode_real(C,Val, TagIn) when is_tuple(Val); is_list(Val) -> - encode_tags(TagIn, encode_real(C,Val)). - - - -encode_real(C,Val) -> - asn1rt_ber_bin:encode_real(C,Val). - - -%%============================================================================ -%% decode real value -%% -%% decode_real([OctetBufferList], tuple|value, tag|notag) -> -%% {{Mantissa, Base, Exp} | realval | PLUS-INFINITY | MINUS-INFINITY | 0, -%% RestBuff} -%% -%% only for base 2 and 10 decoding sofar!! -%%============================================================================ - -decode_real(Tlv, Tags) -> - Buffer = match_tags(Tlv,Tags), - decode_real_notag(Buffer). - -decode_real_notag(Buffer) -> - Len = - case Buffer of - Bin when is_binary(Bin) -> - size(Bin); - {_T,_V} -> - exit({error,{asn1,{real_not_in_primitive_form,Buffer}}}) - end, - {Val,_Rest,Len} = asn1rt_ber_bin:decode_real(Buffer,Len), - Val. -%% exit({error,{asn1, {unimplemented,real}}}). -%% decode_real2(Buffer, Form, size(Buffer)). - -% decode_real2(Buffer, Form, Len) -> -% <<First, Buffer2/binary>> = Buffer, -% if -% First =:= 2#01000000 -> {'PLUS-INFINITY', Buffer2}; -% First =:= 2#01000001 -> {'MINUS-INFINITY', Buffer2}; -% First =:= 2#00000000 -> {0, Buffer2}; -% true -> -% %% have some check here to verify only supported bases (2) -% <<B7:1,B6:1,B5_4:2,B3_2:2,B1_0:2>> = <<First>>, -% Sign = B6, -% Base = -% case B5_4 of -% 0 -> 2; % base 2, only one so far -% _ -> exit({error,{asn1, {non_supported_base, First}}}) -% end, -% ScalingFactor = -% case B3_2 of -% 0 -> 0; % no scaling so far -% _ -> exit({error,{asn1, {non_supported_scaling, First}}}) -% end, - -% {FirstLen,Exp,Buffer3} = -% case B1_0 of -% 0 -> -% <<_:1/unit:8,Buffer21/binary>> = Buffer2, -% {2, decode_integer2(1, Buffer2),Buffer21}; -% 1 -> -% <<_:2/unit:8,Buffer21/binary>> = Buffer2, -% {3, decode_integer2(2, Buffer2)}; -% 2 -> -% <<_:3/unit:8,Buffer21/binary>> = Buffer2, -% {4, decode_integer2(3, Buffer2)}; -% 3 -> -% <<ExpLen1,RestBuffer/binary>> = Buffer2, -% <<_:ExpLen1/unit:8,RestBuffer2/binary>> = RestBuffer, -% { ExpLen1 + 2, -% decode_integer2(ExpLen1, RestBuffer, RemBytes1), -% RestBuffer2} -% end, -% Length = Len - FirstLen, -% <<LongInt:Length/unit:8,RestBuff/binary>> = Buffer3, -% {Mantissa, Buffer4} = -% if Sign =:= 0 -> - -% {LongInt, RestBuff};% sign plus, -% true -> - -% {-LongInt, RestBuff}% sign minus -% end, -% case Form of -% tuple -> -% {Val,Buf,RemB} = Exp, -% {{Mantissa, Base, {Val,Buf}}, Buffer4, RemBytes2+RemBytes3}; -% _value -> -% comming -% end -% end. - - -%%============================================================================ -%% Bitstring value, ITU_T X.690 Chapter 8.6 -%% -%% encode bitstring value -%% -%% bitstring NamedBitList -%% Val can be of: -%% - [identifiers] where only named identifers are set to one, -%% the Constraint must then have some information of the -%% bitlength. -%% - [list of ones and zeroes] all bits -%% - integer value representing the bitlist -%% C is constrint Len, only valid when identifiers -%%============================================================================ - -encode_bit_string(C,Bin={Unused,BinBits},NamedBitList,TagIn) when is_integer(Unused), is_binary(BinBits) -> - encode_bin_bit_string(C,Bin,NamedBitList,TagIn); -encode_bit_string(C, [FirstVal | RestVal], NamedBitList, TagIn) when is_atom(FirstVal) -> - encode_bit_string_named(C, [FirstVal | RestVal], NamedBitList, TagIn); - -encode_bit_string(C, [{bit,X} | RestVal], NamedBitList, TagIn) -> - encode_bit_string_named(C, [{bit,X} | RestVal], NamedBitList, TagIn); - -encode_bit_string(C, [FirstVal| RestVal], NamedBitList, TagIn) when is_integer(FirstVal) -> - encode_bit_string_bits(C, [FirstVal | RestVal], NamedBitList, TagIn); - -encode_bit_string(_C, 0, _NamedBitList, TagIn) -> - encode_tags(TagIn, <<0>>,1); - -encode_bit_string(_C, [], _NamedBitList, TagIn) -> - encode_tags(TagIn, <<0>>,1); - -encode_bit_string(C, IntegerVal, NamedBitList, TagIn) when is_integer(IntegerVal) -> - BitListVal = int_to_bitlist(IntegerVal), - encode_bit_string_bits(C, BitListVal, NamedBitList, TagIn); - -encode_bit_string(C, {Name,BitList}, NamedBitList, TagIn) when is_atom(Name) -> - encode_bit_string(C, BitList, NamedBitList, TagIn). - - - -int_to_bitlist(0) -> - []; -int_to_bitlist(Int) when is_integer(Int), Int >= 0 -> - [Int band 1 | int_to_bitlist(Int bsr 1)]. - - -%%================================================================= -%% Encode BIT STRING of the form {Unused,BinBits}. -%% Unused is the number of unused bits in the last byte in BinBits -%% and BinBits is a binary representing the BIT STRING. -%%================================================================= -encode_bin_bit_string(C,{Unused,BinBits},_NamedBitList,TagIn)-> - case get_constraint(C,'SizeConstraint') of - no -> - remove_unused_then_dotag(TagIn, Unused, BinBits); - {_Min,Max} -> - BBLen = (size(BinBits)*8)-Unused, - if - BBLen > Max -> - exit({error,{asn1, - {bitstring_length, - {{was,BBLen},{maximum,Max}}}}}); - true -> - remove_unused_then_dotag(TagIn, Unused, BinBits) - end; - Size -> - case ((size(BinBits)*8)-Unused) of - BBSize when BBSize =< Size -> - remove_unused_then_dotag(TagIn, Unused, BinBits); - BBSize -> - exit({error,{asn1, - {bitstring_length, - {{was,BBSize},{should_be,Size}}}}}) - end - end. - -remove_unused_then_dotag(TagIn,Unused,BinBits) -> - case Unused of - 0 when (size(BinBits) == 0) -> - encode_tags(TagIn,<<0>>,1); - 0 -> - Bin = <<Unused,BinBits/binary>>, - encode_tags(TagIn,Bin,size(Bin)); - Num -> - N = (size(BinBits)-1), - <<BBits:N/binary,LastByte>> = BinBits, - encode_tags(TagIn, - [Unused,binary_to_list(BBits) ++[(LastByte bsr Num) bsl Num]], - 1+size(BinBits)) - end. - - -%%================================================================= -%% Encode named bits -%%================================================================= - -encode_bit_string_named(C, [FirstVal | RestVal], NamedBitList, TagIn) -> - ToSetPos = get_all_bitposes([FirstVal | RestVal], NamedBitList, []), - Size = - case get_constraint(C,'SizeConstraint') of - no -> - lists:max(ToSetPos)+1; - {_Min,Max} -> - Max; - TSize -> - TSize - end, - BitList = make_and_set_list(Size, ToSetPos, 0), - {Len, Unused, OctetList} = encode_bitstring(BitList), - encode_tags(TagIn, [Unused|OctetList],Len+1). - - -%%---------------------------------------- -%% get_all_bitposes([list of named bits to set], named_bit_db, []) -> -%% [sorted_list_of_bitpositions_to_set] -%%---------------------------------------- - -get_all_bitposes([{bit,ValPos}|Rest], NamedBitList, Ack) -> - get_all_bitposes(Rest, NamedBitList, [ValPos | Ack ]); -get_all_bitposes([Val | Rest], NamedBitList, Ack) when is_atom(Val) -> - case lists:keysearch(Val, 1, NamedBitList) of - {value, {_ValName, ValPos}} -> - get_all_bitposes(Rest, NamedBitList, [ValPos | Ack]); - _ -> - exit({error,{asn1, {bitstring_namedbit, Val}}}) - end; -get_all_bitposes([], _NamedBitList, Ack) -> - lists:sort(Ack). - - -%%---------------------------------------- -%% make_and_set_list(Len of list to return, [list of positions to set to 1])-> -%% returns list of Len length, with all in SetPos set. -%% in positioning in list the first element is 0, the second 1 etc.., but -%% Len will make a list of length Len, not Len + 1. -%% BitList = make_and_set_list(C, ToSetPos, 0), -%%---------------------------------------- - -make_and_set_list(0, [], _) -> []; -make_and_set_list(0, _, _) -> - exit({error,{asn1,bitstring_sizeconstraint}}); -make_and_set_list(Len, [XPos|SetPos], XPos) -> - [1 | make_and_set_list(Len - 1, SetPos, XPos + 1)]; -make_and_set_list(Len, [Pos|SetPos], XPos) -> - [0 | make_and_set_list(Len - 1, [Pos | SetPos], XPos + 1)]; -make_and_set_list(Len, [], XPos) -> - [0 | make_and_set_list(Len - 1, [], XPos + 1)]. - - - - - - -%%================================================================= -%% Encode bit string for lists of ones and zeroes -%%================================================================= -encode_bit_string_bits(C, BitListVal, _NamedBitList, TagIn) when is_list(BitListVal) -> - case get_constraint(C,'SizeConstraint') of - no -> - {Len, Unused, OctetList} = encode_bitstring(BitListVal), - %%add unused byte to the Len - encode_tags(TagIn, [Unused | OctetList], Len+1); - Constr={Min,_Max} when is_integer(Min) -> - %% Max may be an integer or 'MAX' - encode_constr_bit_str_bits(Constr,BitListVal,TagIn); - {Constr={_,_},[]} ->%Constr={Min,Max} - %% constraint with extension mark - encode_constr_bit_str_bits(Constr,BitListVal,TagIn); - Constr={{_,_},{_,_}} ->%{{Min1,Max1},{Min2,Max2}} - %% constraint with extension mark - encode_constr_bit_str_bits(Constr,BitListVal,TagIn); - Size -> - case length(BitListVal) of - BitSize when BitSize == Size -> - {Len, Unused, OctetList} = encode_bitstring(BitListVal), - %%add unused byte to the Len - encode_tags(TagIn, [Unused | OctetList], Len+1); - BitSize when BitSize < Size -> - PaddedList = pad_bit_list(Size-BitSize,BitListVal), - {Len, Unused, OctetList} = encode_bitstring(PaddedList), - %%add unused byte to the Len - encode_tags(TagIn, [Unused | OctetList], Len+1); - BitSize -> - exit({error,{asn1, - {bitstring_length, {{was,BitSize},{should_be,Size}}}}}) - end - - end. - -encode_constr_bit_str_bits({{_Min1,Max1},{Min2,Max2}},BitListVal,TagIn) -> - BitLen = length(BitListVal), - case BitLen of - Len when Len > Max2 -> - exit({error,{asn1,{bitstring_length,{{was,BitLen}, - {maximum,Max2}}}}}); - Len when Len > Max1, Len < Min2 -> - exit({error,{asn1,{bitstring_length,{{was,BitLen}, - {not_allowed_interval, - Max1,Min2}}}}}); - _ -> - {Len, Unused, OctetList} = encode_bitstring(BitListVal), - %%add unused byte to the Len - encode_tags(TagIn, [Unused, OctetList], Len+1) - end; -encode_constr_bit_str_bits({Min,Max},BitListVal,TagIn) -> - BitLen = length(BitListVal), - if - BitLen > Max -> - exit({error,{asn1,{bitstring_length,{{was,BitLen}, - {maximum,Max}}}}}); - BitLen < Min -> - exit({error,{asn1,{bitstring_length,{{was,BitLen}, - {minimum,Max}}}}}); - true -> - {Len, Unused, OctetList} = encode_bitstring(BitListVal), - %%add unused byte to the Len - encode_tags(TagIn, [Unused, OctetList], Len+1) - end. - - -%% returns a list of length Size + length(BitListVal), with BitListVal -%% as the most significant elements followed by padded zero elements -pad_bit_list(Size,BitListVal) -> - Tail = lists:duplicate(Size,0), - lists:append(BitListVal,Tail). - -%%================================================================= -%% Do the actual encoding -%% ([bitlist]) -> {ListLen, UnusedBits, OctetList} -%%================================================================= - -encode_bitstring([B8, B7, B6, B5, B4, B3, B2, B1 | Rest]) -> - Val = (B8 bsl 7) bor (B7 bsl 6) bor (B6 bsl 5) bor (B5 bsl 4) bor - (B4 bsl 3) bor (B3 bsl 2) bor (B2 bsl 1) bor B1, - encode_bitstring(Rest, [Val], 1); -encode_bitstring(Val) -> - {Unused, Octet} = unused_bitlist(Val, 7, 0), - {1, Unused, [Octet]}. - -encode_bitstring([B8, B7, B6, B5, B4, B3, B2, B1 | Rest], Ack, Len) -> - Val = (B8 bsl 7) bor (B7 bsl 6) bor (B6 bsl 5) bor (B5 bsl 4) bor - (B4 bsl 3) bor (B3 bsl 2) bor (B2 bsl 1) bor B1, - encode_bitstring(Rest, [Ack | [Val]], Len + 1); -%%even multiple of 8 bits.. -encode_bitstring([], Ack, Len) -> - {Len, 0, Ack}; -%% unused bits in last octet -encode_bitstring(Rest, Ack, Len) -> -% io:format("uneven ~w ~w ~w~n",[Rest, Ack, Len]), - {Unused, Val} = unused_bitlist(Rest, 7, 0), - {Len + 1, Unused, [Ack | [Val]]}. - -%%%%%%%%%%%%%%%%%% -%% unused_bitlist([list of ones and zeros <= 7], 7, []) -> -%% {Unused bits, Last octet with bits moved to right} -unused_bitlist([], Trail, Ack) -> - {Trail + 1, Ack}; -unused_bitlist([Bit | Rest], Trail, Ack) -> -%% io:format("trail Bit: ~w Rest: ~w Trail: ~w Ack:~w~n",[Bit, Rest, Trail, Ack]), - unused_bitlist(Rest, Trail - 1, (Bit bsl Trail) bor Ack). - - -%%============================================================================ -%% decode bitstring value -%% (Buffer, Range, NamedNumberList, HasTag, TotalLen) -> {Integer, Remain, RemovedBytes} -%%============================================================================ - -decode_compact_bit_string(Buffer, Range, NamedNumberList, Tags) -> -% NewTags = new_tags(HasTag,#tag{class=?UNIVERSAL,number=?N_BIT_STRING}), - decode_restricted_string(Buffer, Range, ?N_BIT_STRING, Tags, - NamedNumberList,bin). - -decode_bit_string(Buffer, Range, NamedNumberList, Tags) -> -% NewTags = new_tags(HasTag,#tag{class=?UNIVERSAL,number=?N_BIT_STRING}), - decode_restricted_string(Buffer, Range, ?N_BIT_STRING, Tags, - NamedNumberList,old). - - -decode_bit_string2(<<0>>,_NamedNumberList,BinOrOld) -> - case BinOrOld of - bin -> - {0,<<>>}; - _ -> - [] - end; -decode_bit_string2(<<Unused,Bits/binary>>,NamedNumberList,BinOrOld) -> - case NamedNumberList of - [] -> - case BinOrOld of - bin -> - {Unused,Bits}; - _ -> - decode_bitstring2(size(Bits), Unused, Bits) - end; - _ -> - BitString = decode_bitstring2(size(Bits), Unused, Bits), - decode_bitstring_NNL(BitString,NamedNumberList) - end. - -%%---------------------------------------- -%% Decode the in buffer to bits -%%---------------------------------------- -decode_bitstring2(1,Unused,<<B7:1,B6:1,B5:1,B4:1,B3:1,B2:1,B1:1,B0:1,_/binary>>) -> - lists:sublist([B7,B6,B5,B4,B3,B2,B1,B0],8-Unused); -decode_bitstring2(Len, Unused, - <<B7:1,B6:1,B5:1,B4:1,B3:1,B2:1,B1:1,B0:1,Buffer/binary>>) -> - [B7, B6, B5, B4, B3, B2, B1, B0 | - decode_bitstring2(Len - 1, Unused, Buffer)]. - -%%decode_bitstring2(1, Unused, Buffer) -> -%% make_bits_of_int(hd(Buffer), 128, 8-Unused); -%%decode_bitstring2(Len, Unused, [BitVal | Buffer]) -> -%% [B7, B6, B5, B4, B3, B2, B1, B0] = make_bits_of_int(BitVal, 128, 8), -%% [B7, B6, B5, B4, B3, B2, B1, B0 | -%% decode_bitstring2(Len - 1, Unused, Buffer)]. - - -%%make_bits_of_int(_, _, 0) -> -%% []; -%%make_bits_of_int(BitVal, MaskVal, Unused) when Unused > 0 -> -%% X = case MaskVal band BitVal of -%% 0 -> 0 ; -%% _ -> 1 -%% end, -%% [X | make_bits_of_int(BitVal, MaskVal bsr 1, Unused - 1)]. - - - -%%---------------------------------------- -%% Decode the bitlist to names -%%---------------------------------------- - - -decode_bitstring_NNL(BitList,NamedNumberList) -> - decode_bitstring_NNL(BitList,NamedNumberList,0,[]). - - -decode_bitstring_NNL([],_,_No,Result) -> - lists:reverse(Result); - -decode_bitstring_NNL([B|BitList],[{Name,No}|NamedNumberList],No,Result) -> - if - B == 0 -> - decode_bitstring_NNL(BitList,NamedNumberList,No+1,Result); - true -> - decode_bitstring_NNL(BitList,NamedNumberList,No+1,[Name|Result]) - end; -decode_bitstring_NNL([1|BitList],NamedNumberList,No,Result) -> - decode_bitstring_NNL(BitList,NamedNumberList,No+1,[{bit,No}|Result]); -decode_bitstring_NNL([0|BitList],NamedNumberList,No,Result) -> - decode_bitstring_NNL(BitList,NamedNumberList,No+1,Result). - - -%%============================================================================ -%% Octet string, ITU_T X.690 Chapter 8.7 -%% -%% encode octet string -%% The OctetList must be a flat list of integers in the range 0..255 -%% the function does not check this because it takes to much time -%%============================================================================ -encode_octet_string(_C, OctetList, TagIn) when is_binary(OctetList) -> - encode_tags(TagIn, OctetList, size(OctetList)); -encode_octet_string(_C, OctetList, TagIn) when is_list(OctetList) -> - encode_tags(TagIn, OctetList, length(OctetList)); -encode_octet_string(C, {Name,OctetList}, TagIn) when is_atom(Name) -> - encode_octet_string(C, OctetList, TagIn). - - -%%============================================================================ -%% decode octet string -%% (Buffer, Range, HasTag, TotalLen) -> {String, Remain, RemovedBytes} -%% -%% Octet string is decoded as a restricted string -%%============================================================================ -decode_octet_string(Buffer, Range, Tags) -> -% NewTags = new_tags(HasTag,#tag{class=?UNIVERSAL,number=?N_OCTET_STRING}), - decode_restricted_string(Buffer, Range, ?N_OCTET_STRING, - Tags, [], old). - -%%============================================================================ -%% Null value, ITU_T X.690 Chapter 8.8 -%% -%% encode NULL value -%%============================================================================ - -encode_null({Name, _Val}, TagIn) when is_atom(Name) -> - encode_tags(TagIn, [], 0); -encode_null(_Val, TagIn) -> - encode_tags(TagIn, [], 0). - -%%============================================================================ -%% decode NULL value -%% (Buffer, HasTag, TotalLen) -> {NULL, Remain, RemovedBytes} -%%============================================================================ - -decode_null(Tlv, Tags) -> - Val = match_tags(Tlv, Tags), - case Val of - <<>> -> - 'NULL'; - _ -> - exit({error,{asn1,{decode_null,Val}}}) - end. - -%%============================================================================ -%% Object identifier, ITU_T X.690 Chapter 8.19 -%% -%% encode Object Identifier value -%%============================================================================ - -encode_object_identifier({Name,Val}, TagIn) when is_atom(Name) -> - encode_object_identifier(Val, TagIn); -encode_object_identifier(Val, TagIn) -> - encode_tags(TagIn, e_object_identifier(Val)). - -e_object_identifier({'OBJECT IDENTIFIER', V}) -> - e_object_identifier(V); -e_object_identifier({Cname, V}) when is_atom(Cname), is_tuple(V) -> - e_object_identifier(tuple_to_list(V)); -e_object_identifier({Cname, V}) when is_atom(Cname), is_list(V) -> - e_object_identifier(V); -e_object_identifier(V) when is_tuple(V) -> - e_object_identifier(tuple_to_list(V)); - -%%%%%%%%%%%%%%% -%% e_object_identifier([List of Obect Identifiers]) -> -%% {[Encoded Octetlist of ObjIds], IntLength} -%% -e_object_identifier([E1, E2 | Tail]) -> - Head = 40*E1 + E2, % wow! - {H,Lh} = mk_object_val(Head), - {R,Lr} = lists:mapfoldl(fun enc_obj_id_tail/2,0,Tail), - {[H|R], Lh+Lr}. - -enc_obj_id_tail(H, Len) -> - {B, L} = mk_object_val(H), - {B,Len+L}. - - -%%%%%%%%%%% -%% mk_object_val(Value) -> {OctetList, Len} -%% returns a Val as a list of octets, the 8 bit is allways set to one except -%% for the last octet, where its 0 -%% - - -mk_object_val(Val) when Val =< 127 -> - {[255 band Val], 1}; -mk_object_val(Val) -> - mk_object_val(Val bsr 7, [Val band 127], 1). -mk_object_val(0, Ack, Len) -> - {Ack, Len}; -mk_object_val(Val, Ack, Len) -> - mk_object_val(Val bsr 7, [((Val band 127) bor 128) | Ack], Len + 1). - - - -%%============================================================================ -%% decode Object Identifier value -%% (Buffer, HasTag, TotalLen) -> {{ObjId}, Remain, RemovedBytes} -%%============================================================================ - -decode_object_identifier(Tlv, Tags) -> - Val = match_tags(Tlv, Tags), - [AddedObjVal|ObjVals] = dec_subidentifiers(Val,0,[]), - {Val1, Val2} = if - AddedObjVal < 40 -> - {0, AddedObjVal}; - AddedObjVal < 80 -> - {1, AddedObjVal - 40}; - true -> - {2, AddedObjVal - 80} - end, - list_to_tuple([Val1, Val2 | ObjVals]). - -dec_subidentifiers(<<>>,_Av,Al) -> - lists:reverse(Al); -dec_subidentifiers(<<1:1,H:7,T/binary>>,Av,Al) -> - dec_subidentifiers(T,(Av bsl 7) + H,Al); -dec_subidentifiers(<<H,T/binary>>,Av,Al) -> - dec_subidentifiers(T,0,[((Av bsl 7) + H)|Al]). - -%%============================================================================ -%% RELATIVE-OID, ITU_T X.690 Chapter 8.20 -%% -%% encode Relative Object Identifier -%%============================================================================ -encode_relative_oid({Name,Val},TagIn) when is_atom(Name) -> - encode_relative_oid(Val,TagIn); -encode_relative_oid(Val,TagIn) when is_tuple(Val) -> - encode_relative_oid(tuple_to_list(Val),TagIn); -encode_relative_oid(Val,TagIn) -> - encode_tags(TagIn, enc_relative_oid(Val)). - -enc_relative_oid(Tuple) when is_tuple(Tuple) -> - enc_relative_oid(tuple_to_list(Tuple)); -enc_relative_oid(Val) -> - lists:mapfoldl(fun(X,AccIn) -> - {SO,L}=mk_object_val(X), - {SO,L+AccIn} - end - ,0,Val). - -%%============================================================================ -%% decode Relative Object Identifier value -%% (Buffer, HasTag, TotalLen) -> {{ObjId}, Remain, RemovedBytes} -%%============================================================================ -decode_relative_oid(Tlv, Tags) -> - Val = match_tags(Tlv, Tags), - ObjVals = dec_subidentifiers(Val,0,[]), - list_to_tuple(ObjVals). - -%%============================================================================ -%% Restricted character string types, ITU_T X.690 Chapter 8.20 -%% -%% encode Numeric Printable Teletex Videotex Visible IA5 Graphic General strings -%%============================================================================ -%% The StringType arg is kept for future use but might be removed -encode_restricted_string(_C, OctetList, _StringType, TagIn) - when is_binary(OctetList) -> - encode_tags(TagIn, OctetList, size(OctetList)); -encode_restricted_string(_C, OctetList, _StringType, TagIn) - when is_list(OctetList) -> - encode_tags(TagIn, OctetList, length(OctetList)); -encode_restricted_string(C,{Name,OctetL}, StringType, TagIn) when is_atom(Name)-> - encode_restricted_string(C, OctetL, StringType, TagIn). - -%%============================================================================ -%% decode Numeric Printable Teletex Videotex Visible IA5 Graphic General strings -%% (Buffer, Range, StringType, HasTag, TotalLen) -> -%% {String, Remain, RemovedBytes} -%%============================================================================ - -decode_restricted_string(Buffer, Range, StringType, Tags) -> - decode_restricted_string(Buffer, Range, StringType, Tags, [], old). - - -decode_restricted_string(Tlv, Range, StringType, TagsIn, - NamedNumberList, BinOrOld) -> - Val = match_tags(Tlv, TagsIn), - Val2 = - case Val of - PartList = [_H|_T] -> % constructed val - Bin = collect_parts(PartList), - decode_restricted(Bin, StringType, - NamedNumberList, BinOrOld); - Bin -> - decode_restricted(Bin, StringType, - NamedNumberList, BinOrOld) - end, - check_and_convert_restricted_string(Val2,StringType,Range,NamedNumberList,BinOrOld). - - - -% case StringType of -% ?N_BIT_STRING when BinOrOld == bin -> -% {concat_bit_binaries(AccVal, Val), AccRb+Rb}; -% _ when is_binary(Val),is_binary(AccVal) -> -% {<<AccVal/binary,Val/binary>>,AccRb+Rb}; -% _ when is_binary(Val), AccVal==[] -> -% {Val,AccRb+Rb}; -% _ -> -% {AccVal++Val, AccRb+Rb} -% end, - - - -decode_restricted(Bin, StringType, NamedNumberList,BinOrOld) -> - case StringType of - ?N_BIT_STRING -> - decode_bit_string2(Bin, NamedNumberList, BinOrOld); - ?N_UniversalString -> - mk_universal_string(binary_to_list(Bin)); - ?N_BMPString -> - mk_BMP_string(binary_to_list(Bin)); - _ -> - Bin - end. - - -check_and_convert_restricted_string(Val,StringType,Range,NamedNumberList,_BinOrOld) -> - {StrLen,NewVal} = case StringType of - ?N_BIT_STRING when NamedNumberList /= [] -> - {no_check,Val}; - ?N_BIT_STRING when is_list(Val) -> - {length(Val),Val}; - ?N_BIT_STRING when is_tuple(Val) -> - {(size(element(2,Val))*8) - element(1,Val),Val}; - _ when is_binary(Val) -> - {size(Val),binary_to_list(Val)}; - _ when is_list(Val) -> - {length(Val), Val} - end, - case Range of - _ when StrLen == no_check -> - NewVal; - [] -> % No length constraint - NewVal; - {Lb,Ub} when StrLen >= Lb, Ub >= StrLen -> % variable length constraint - NewVal; - {{Lb,_Ub},[]} when StrLen >= Lb -> - NewVal; - {{Lb,_Ub},_Ext=[Min|_]} when StrLen >= Lb; StrLen >= Min -> - NewVal; - {{Lb1,Ub1},{Lb2,Ub2}} when StrLen >= Lb1, StrLen =< Ub1; - StrLen =< Ub2, StrLen >= Lb2 -> - NewVal; - StrLen -> % fixed length constraint - NewVal; - {_,_} -> - exit({error,{asn1,{length,Range,Val}}}); - _Len when is_integer(_Len) -> - exit({error,{asn1,{length,Range,Val}}}); - _ -> % some strange constraint that we don't support yet - NewVal - end. - - -%%============================================================================ -%% encode Universal string -%%============================================================================ - -encode_universal_string(C, {Name, Universal}, TagIn) when is_atom(Name) -> - encode_universal_string(C, Universal, TagIn); -encode_universal_string(_C, Universal, TagIn) -> - OctetList = mk_uni_list(Universal), - encode_tags(TagIn, OctetList, length(OctetList)). - -mk_uni_list(In) -> - mk_uni_list(In,[]). - -mk_uni_list([],List) -> - lists:reverse(List); -mk_uni_list([{A,B,C,D}|T],List) -> - mk_uni_list(T,[D,C,B,A|List]); -mk_uni_list([H|T],List) -> - mk_uni_list(T,[H,0,0,0|List]). - -%%=========================================================================== -%% decode Universal strings -%% (Buffer, Range, StringType, HasTag, LenIn) -> -%% {String, Remain, RemovedBytes} -%%=========================================================================== - -decode_universal_string(Buffer, Range, Tags) -> - decode_restricted_string(Buffer, Range, ?N_UniversalString, - Tags, [], old). - - -mk_universal_string(In) -> - mk_universal_string(In,[]). - -mk_universal_string([],Acc) -> - lists:reverse(Acc); -mk_universal_string([0,0,0,D|T],Acc) -> - mk_universal_string(T,[D|Acc]); -mk_universal_string([A,B,C,D|T],Acc) -> - mk_universal_string(T,[{A,B,C,D}|Acc]). - - -%%============================================================================ -%% encode UTF8 string -%%============================================================================ - -encode_UTF8_string(_C,UTF8String,TagIn) when is_binary(UTF8String) -> - encode_tags(TagIn, UTF8String, size(UTF8String)); -encode_UTF8_string(_C,UTF8String,TagIn) -> - encode_tags(TagIn, UTF8String, length(UTF8String)). - - -%%============================================================================ -%% decode UTF8 string -%%============================================================================ - -decode_UTF8_string(Tlv,TagsIn) -> - Val = match_tags(Tlv, TagsIn), - case Val of - PartList = [_H|_T] -> % constructed val - collect_parts(PartList); - Bin -> - Bin - end. - - -%%============================================================================ -%% encode BMP string -%%============================================================================ - -encode_BMP_string(C, {Name,BMPString}, TagIn) when is_atom(Name)-> - encode_BMP_string(C, BMPString, TagIn); -encode_BMP_string(_C, BMPString, TagIn) -> - OctetList = mk_BMP_list(BMPString), - encode_tags(TagIn, OctetList, length(OctetList)). - -mk_BMP_list(In) -> - mk_BMP_list(In,[]). - -mk_BMP_list([],List) -> - lists:reverse(List); -mk_BMP_list([{0,0,C,D}|T],List) -> - mk_BMP_list(T,[D,C|List]); -mk_BMP_list([H|T],List) -> - mk_BMP_list(T,[H,0|List]). - -%%============================================================================ -%% decode (OctetList, Range(ignored), tag|notag) -> {ValList, RestList} -%% (Buffer, Range, StringType, HasTag, TotalLen) -> -%% {String, Remain, RemovedBytes} -%%============================================================================ -decode_BMP_string(Buffer, Range, Tags) -> - decode_restricted_string(Buffer, Range, ?N_BMPString, - Tags, [], old). - -mk_BMP_string(In) -> - mk_BMP_string(In,[]). - -mk_BMP_string([],US) -> - lists:reverse(US); -mk_BMP_string([0,B|T],US) -> - mk_BMP_string(T,[B|US]); -mk_BMP_string([C,D|T],US) -> - mk_BMP_string(T,[{0,0,C,D}|US]). - - -%%============================================================================ -%% Generalized time, ITU_T X.680 Chapter 39 -%% -%% encode Generalized time -%%============================================================================ - -encode_generalized_time(C, {Name,OctetList}, TagIn) when is_atom(Name) -> - encode_generalized_time(C, OctetList, TagIn); -encode_generalized_time(_C, OctetList, TagIn) -> - encode_tags(TagIn, OctetList, length(OctetList)). - -%%============================================================================ -%% decode Generalized time -%% (Buffer, Range, HasTag, TotalLen) -> {String, Remain, RemovedBytes} -%%============================================================================ - -decode_generalized_time(Tlv, _Range, Tags) -> - Val = match_tags(Tlv, Tags), - NewVal = case Val of - PartList = [_H|_T] -> % constructed - collect_parts(PartList); - Bin -> - Bin - end, - binary_to_list(NewVal). - -%%============================================================================ -%% Universal time, ITU_T X.680 Chapter 40 -%% -%% encode UTC time -%%============================================================================ - -encode_utc_time(C, {Name,OctetList}, TagIn) when is_atom(Name) -> - encode_utc_time(C, OctetList, TagIn); -encode_utc_time(_C, OctetList, TagIn) -> - encode_tags(TagIn, OctetList, length(OctetList)). - -%%============================================================================ -%% decode UTC time -%% (Buffer, Range, HasTag, TotalLen) -> {String, Remain, RemovedBytes} -%%============================================================================ - -decode_utc_time(Tlv, _Range, Tags) -> - Val = match_tags(Tlv, Tags), - NewVal = case Val of - PartList = [_H|_T] -> % constructed - collect_parts(PartList); - Bin -> - Bin - end, - binary_to_list(NewVal). - - -%%============================================================================ -%% Length handling -%% -%% Encode length -%% -%% encode_length(Int | indefinite) -> -%% [<127]| [128 + Int (<127),OctetList] | [16#80] -%%============================================================================ - -encode_length(indefinite) -> - {[16#80],1}; % 128 -encode_length(L) when L =< 16#7F -> - {[L],1}; -encode_length(L) -> - Oct = minimum_octets(L), - Len = length(Oct), - if - Len =< 126 -> - {[ (16#80+Len) | Oct ],Len+1}; - true -> - exit({error,{asn1, to_long_length_oct, Len}}) - end. - - -%% Val must be >= 0 -minimum_octets(Val) -> - minimum_octets(Val,[]). - -minimum_octets(0,Acc) -> - Acc; -minimum_octets(Val, Acc) -> - minimum_octets((Val bsr 8),[Val band 16#FF | Acc]). - - -%%=========================================================================== -%% Decode length -%% -%% decode_length(OctetList) -> {{indefinite, RestOctetsL}, NoRemovedBytes} | -%% {{Length, RestOctetsL}, NoRemovedBytes} -%%=========================================================================== - -decode_length(<<1:1,0:7,T/binary>>) -> - {indefinite, T}; -decode_length(<<0:1,Length:7,T/binary>>) -> - {Length,T}; -decode_length(<<1:1,LL:7,T/binary>>) -> - <<Length:LL/unit:8,Rest/binary>> = T, - {Length,Rest}. - - - -%%------------------------------------------------------------------------- -%% INTERNAL HELPER FUNCTIONS (not exported) -%%------------------------------------------------------------------------- - - -%% decoding postitive integer values. -decode_integer2(Len,Bin = <<0:1,_:7,_Bs/binary>>) -> - <<Int:Len/unit:8>> = Bin, - Int; -%% decoding negative integer values. -decode_integer2(Len,<<1:1,B2:7,Bs/binary>>) -> - <<N:Len/unit:8>> = <<B2,Bs/binary>>, - Int = N - (1 bsl (8 * Len - 1)), - Int. - -get_constraint(C,Key) -> - case lists:keysearch(Key,1,C) of - false -> - no; - {value,{_,V}} -> - V - end. - -collect_parts(TlvList) -> - collect_parts(TlvList,[]). - -collect_parts([{_,L}|Rest],Acc) when is_list(L) -> - collect_parts(Rest,[collect_parts(L)|Acc]); -collect_parts([{?N_BIT_STRING,<<Unused,Bits/binary>>}|Rest],_Acc) -> - collect_parts_bit(Rest,[Bits],Unused); -collect_parts([{_T,V}|Rest],Acc) -> - collect_parts(Rest,[V|Acc]); -collect_parts([],Acc) -> - list_to_binary(lists:reverse(Acc)). - -collect_parts_bit([{?N_BIT_STRING,<<Unused,Bits/binary>>}|Rest],Acc,Uacc) -> - collect_parts_bit(Rest,[Bits|Acc],Unused+Uacc); -collect_parts_bit([],Acc,Uacc) -> - list_to_binary([Uacc|lists:reverse(Acc)]). - - - - - - - - - - - - - - - - - - - - diff --git a/lib/asn1/src/asn1rt_check.erl b/lib/asn1/src/asn1rt_check.erl deleted file mode 100644 index 35b993fc71..0000000000 --- a/lib/asn1/src/asn1rt_check.erl +++ /dev/null @@ -1,360 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2001-2011. All Rights Reserved. -%% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% -%% --module(asn1rt_check). - --export([check_bool/2, - check_int/3, - check_bitstring/3, - check_octetstring/2, - check_null/2, - check_objectidentifier/2, - check_objectdescriptor/2, - check_real/2, - check_enum/3, - check_restrictedstring/2]). - --export([transform_to_EXTERNAL1990/1, - transform_to_EXTERNAL1994/1]). - --export([dynamicsort_SET_components/1, - dynamicsort_SETOF/1]). - -check_bool(_Bool,asn1_DEFAULT) -> - true; -check_bool(Bool,Bool) when Bool == true; Bool == false -> - true; -check_bool(_Bool1,Bool2) -> - throw({error,Bool2}). - -check_int(_,asn1_DEFAULT,_) -> - true; -check_int(Value,Value,_) when is_integer(Value) -> - true; -check_int(DefValue,Value,NNL) when is_atom(Value) -> - case lists:keysearch(Value,1,NNL) of - {value,{_,DefValue}} -> - true; - _ -> - throw({error,DefValue}) - end; -check_int(DefaultValue,_Value,_) -> - throw({error,DefaultValue}). - -% check_bitstring([H|T],[H|T],_) when is_integer(H) -> -% true; -% check_bitstring(V,V,_) when is_integer(V) -> -% true; -%% Two equal lists or integers -check_bitstring(_,asn1_DEFAULT,_) -> - true; -check_bitstring(V,V,_) -> - true; -%% Default value as a list of 1 and 0 and user value as an integer -check_bitstring(L=[H|T],Int,_) when is_integer(Int),is_integer(H) -> - case bit_list_to_int(L,length(T)) of - Int -> true; - _ -> throw({error,L,Int}) - end; -%% Default value as an integer, val as list -check_bitstring(Int,Val,NBL) when is_integer(Int),is_list(Val) -> - BL = int_to_bit_list(Int,[],length(Val)), - check_bitstring(BL,Val,NBL); -%% Default value and user value as lists of ones and zeros -check_bitstring(L1=[H1|_T1],L2=[H2|_T2],NBL=[_H|_T]) when is_integer(H1),is_integer(H2) -> - L2new = remove_trailing_zeros(L2), - check_bitstring(L1,L2new,NBL); -%% Default value as a list of 1 and 0 and user value as a list of atoms -check_bitstring(L1=[H1|_T1],L2=[H2|_T2],NBL) when is_integer(H1),is_atom(H2) -> - L3 = bit_list_to_nbl(L1,NBL,0,[]), - check_bitstring(L3,L2,NBL); -%% Both default value and user value as a list of atoms -check_bitstring(L1=[H1|T1],L2=[H2|_T2],_) - when is_atom(H1),is_atom(H2),length(L1) == length(L2) -> - case lists:member(H1,L2) of - true -> - check_bitstring1(T1,L2); - false -> throw({error,L2}) - end; -%% Default value as a list of atoms and user value as a list of 1 and 0 -check_bitstring(L1=[H1|_T1],L2=[H2|_T2],NBL) when is_atom(H1),is_integer(H2) -> - L3 = bit_list_to_nbl(L2,NBL,0,[]), - check_bitstring(L1,L3,NBL); -%% User value in compact format -check_bitstring(DefVal,CBS={_,_},NBL) -> - NewVal = cbs_to_bit_list(CBS), - check_bitstring(DefVal,NewVal,NBL); -check_bitstring(DV,V,_) -> - throw({error,DV,V}). - - -bit_list_to_int([0|Bs],ShL)-> - bit_list_to_int(Bs,ShL-1) + 0; -bit_list_to_int([1|Bs],ShL) -> - bit_list_to_int(Bs,ShL-1) + (1 bsl ShL); -bit_list_to_int([],_) -> - 0. - -int_to_bit_list(0,Acc,0) -> - Acc; -int_to_bit_list(Int,Acc,Len) -> - int_to_bit_list(Int bsr 1,[Int band 1|Acc],Len - 1). - -bit_list_to_nbl([0|T],NBL,Pos,Acc) -> - bit_list_to_nbl(T,NBL,Pos+1,Acc); -bit_list_to_nbl([1|T],NBL,Pos,Acc) -> - case lists:keysearch(Pos,2,NBL) of - {value,{N,_}} -> - bit_list_to_nbl(T,NBL,Pos+1,[N|Acc]); - _ -> - throw({error,{no,named,element,at,pos,Pos}}) - end; -bit_list_to_nbl([],_,_,Acc) -> - Acc. - -remove_trailing_zeros(L2) -> - remove_trailing_zeros1(lists:reverse(L2)). -remove_trailing_zeros1(L) -> - lists:reverse(lists:dropwhile(fun(0)->true; - (_) ->false - end, - L)). - -check_bitstring1([H|T],NBL) -> - case lists:member(H,NBL) of - true -> - check_bitstring1(T,NBL); - V -> throw({error,V}) - end; -check_bitstring1([],_) -> - true. - -cbs_to_bit_list({Unused,<<B7:1,B6:1,B5:1,B4:1,B3:1,B2:1,B1:1,B0:1,Rest/binary>>}) when size(Rest) >= 1 -> - [B7,B6,B5,B4,B3,B2,B1,B0|cbs_to_bit_list({Unused,Rest})]; -cbs_to_bit_list({0,<<B7:1,B6:1,B5:1,B4:1,B3:1,B2:1,B1:1,B0:1>>}) -> - [B7,B6,B5,B4,B3,B2,B1,B0]; -cbs_to_bit_list({Unused,Bin}) when size(Bin) == 1 -> - Used = 8-Unused, - <<Int:Used,_:Unused>> = Bin, - int_to_bit_list(Int,[],Used). - - -check_octetstring(_,asn1_DEFAULT) -> - true; -check_octetstring(L,L) -> - true; -check_octetstring(L,Int) when is_list(L),is_integer(Int) -> - case integer_to_octetlist(Int) of - L -> true; - V -> throw({error,V}) - end; -check_octetstring(_,V) -> - throw({error,V}). - -integer_to_octetlist(Int) -> - integer_to_octetlist(Int,[]). -integer_to_octetlist(0,Acc) -> - Acc; -integer_to_octetlist(Int,Acc) -> - integer_to_octetlist(Int bsr 8,[(Int band 255)|Acc]). - -check_null(_,asn1_DEFAULT) -> - true; -check_null('NULL','NULL') -> - true; -check_null(_,V) -> - throw({error,V}). - -check_objectidentifier(_,asn1_DEFAULT) -> - true; -check_objectidentifier(OI,OI) -> - true; -check_objectidentifier(DOI,OI) when is_tuple(DOI),is_tuple(OI) -> - check_objectidentifier1(tuple_to_list(DOI),tuple_to_list(OI)); -check_objectidentifier(_,OI) -> - throw({error,OI}). - -check_objectidentifier1([V|Rest1],[V|Rest2]) -> - check_objectidentifier1(Rest1,Rest2,V); -check_objectidentifier1([V1|Rest1],[V2|Rest2]) -> - case reserved_objectid(V2,[]) of - V1 -> - check_objectidentifier1(Rest1,Rest2,[V1]); - V -> - throw({error,V}) - end. -check_objectidentifier1([V|Rest1],[V|Rest2],Above) -> - check_objectidentifier1(Rest1,Rest2,[V|Above]); -check_objectidentifier1([V1|Rest1],[V2|Rest2],Above) -> - case reserved_objectid(V2,Above) of - V1 -> - check_objectidentifier1(Rest1,Rest2,[V1|Above]); - V -> - throw({error,V}) - end; -check_objectidentifier1([],[],_) -> - true; -check_objectidentifier1(_,V,_) -> - throw({error,object,identifier,V}). - -%% ITU-T Rec. X.680 Annex B - D -reserved_objectid('itu-t',[]) -> 0; -reserved_objectid('ccitt',[]) -> 0; -%% arcs below "itu-t" -reserved_objectid('recommendation',[0]) -> 0; -reserved_objectid('question',[0]) -> 1; -reserved_objectid('administration',[0]) -> 2; -reserved_objectid('network-operator',[0]) -> 3; -reserved_objectid('identified-organization',[0]) -> 4; - -reserved_objectid(iso,[]) -> 1; -%% arcs below "iso", note that number 1 is not used -reserved_objectid('standard',[1]) -> 0; -reserved_objectid('member-body',[1]) -> 2; -reserved_objectid('identified-organization',[1]) -> 3; - -reserved_objectid('joint-iso-itu-t',[]) -> 2; -reserved_objectid('joint-iso-ccitt',[]) -> 2; - -reserved_objectid(_,_) -> false. - - -check_objectdescriptor(_,asn1_DEFAULT) -> - true; -check_objectdescriptor(OD,OD) -> - true; -check_objectdescriptor(OD,OD) -> - throw({error,{not_implemented_yet,check_objectdescriptor}}). - -check_real(_,asn1_DEFAULT) -> - true; -check_real(R,R) -> - true; -check_real(_,_) -> - throw({error,{not_implemented_yet,check_real}}). - -check_enum(_,asn1_DEFAULT,_) -> - true; -check_enum(Val,Val,_) -> - true; -check_enum(Int,Atom,Enumerations) when is_integer(Int),is_atom(Atom) -> - case lists:keysearch(Atom,1,Enumerations) of - {value,{_,Int}} -> true; - _ -> throw({error,{enumerated,Int,Atom}}) - end; -check_enum(DefVal,Val,_) -> - throw({error,{enumerated,DefVal,Val}}). - - -check_restrictedstring(_,asn1_DEFAULT) -> - true; -check_restrictedstring(Val,Val) -> - true; -check_restrictedstring([V|Rest1],[V|Rest2]) -> - check_restrictedstring(Rest1,Rest2); -check_restrictedstring([V1|Rest1],[V2|Rest2]) -> - check_restrictedstring(V1,V2), - check_restrictedstring(Rest1,Rest2); -%% tuple format of value -check_restrictedstring({V1,V2},[V1,V2]) -> - true; -check_restrictedstring([V1,V2],{V1,V2}) -> - true; -%% quadruple format of value -check_restrictedstring({V1,V2,V3,V4},[V1,V2,V3,V4]) -> - true; -check_restrictedstring([V1,V2,V3,V4],{V1,V2,V3,V4}) -> - true; -%% character string list -check_restrictedstring(V1,V2) when is_list(V1),is_tuple(V2) -> - check_restrictedstring(V1,tuple_to_list(V2)); -check_restrictedstring(V1,V2) -> - throw({error,{restricted,string,V1,V2}}). - -transform_to_EXTERNAL1990(Val) when is_tuple(Val),size(Val) == 4 -> - transform_to_EXTERNAL1990(tuple_to_list(Val),[]); -transform_to_EXTERNAL1990(Val) when is_tuple(Val) -> - %% Data already in ASN1 1990 format - Val. - -transform_to_EXTERNAL1990(['EXTERNAL'|Rest],Acc) -> - transform_to_EXTERNAL1990(Rest,['EXTERNAL'|Acc]); -transform_to_EXTERNAL1990([{syntax,Syntax}|Rest],Acc) -> - transform_to_EXTERNAL1990(Rest,[asn1_NOVALUE,Syntax|Acc]); -transform_to_EXTERNAL1990([{'presentation-context-id',PCid}|Rest],Acc) -> - transform_to_EXTERNAL1990(Rest,[PCid,asn1_NOVALUE|Acc]); -transform_to_EXTERNAL1990([{'context-negotiation',Context_negot}|Rest],Acc) -> - {_,Presentation_Cid,Transfer_syntax} = Context_negot, - transform_to_EXTERNAL1990(Rest,[Presentation_Cid,Transfer_syntax|Acc]); -transform_to_EXTERNAL1990([asn1_NOVALUE|Rest],Acc) -> - transform_to_EXTERNAL1990(Rest,[asn1_NOVALUE|Acc]); -transform_to_EXTERNAL1990([Data_val_desc,Data_value],Acc) when is_list(Data_value)-> - list_to_tuple(lists:reverse([{'octet-aligned',Data_value}, - Data_val_desc|Acc])); -transform_to_EXTERNAL1990([Data_val_desc,Data_value],Acc) - when is_binary(Data_value)-> - list_to_tuple(lists:reverse([{'single-ASN1-type',Data_value}, - Data_val_desc|Acc])); -transform_to_EXTERNAL1990([Data_value],Acc) - when is_list(Data_value); is_binary(Data_value) -> - list_to_tuple(lists:reverse([{'octet-aligned',Data_value}|Acc])). - - -transform_to_EXTERNAL1994(V={'EXTERNAL',DRef,IndRef,Data_v_desc,Encoding}) -> - Identification = - case {DRef,IndRef} of - {DRef,asn1_NOVALUE} -> - {syntax,DRef}; - {asn1_NOVALUE,IndRef} -> - {'presentation-context-id',IndRef}; - _ -> - {'context-negotiation', - {'EXTERNAL_identification_context-negotiation',IndRef,DRef}} - end, - case Encoding of - {_,Val} when is_list(Val);is_binary(Val) -> - {'EXTERNAL',Identification,Data_v_desc,Val}; - - _ -> - V - end. - - -%% dynamicsort_SET_components(Arg) -> -%% Res Arg -> list() -%% Res -> list() -%% Sorts the elements in Arg according to the encoded tag in -%% increasing order. -dynamicsort_SET_components(ListOfEncCs) -> - BinL = lists:map(fun(X) -> list_to_binary(X) end,ListOfEncCs), - TagBinL = lists:map(fun(X) -> - {{T,_,TN},_,_} = asn1rt_ber_bin:decode_tag(X), - {{T,TN},X} - end,BinL), - ClassTagNoSorted = lists:keysort(1,TagBinL), - lists:map(fun({_,El}) -> El end,ClassTagNoSorted). - -%% dynamicsort_SETOF(Arg) -> Res -%% Arg -> list() -%% Res -> list() -%% Sorts the elements in Arg in increasing size -dynamicsort_SETOF(ListOfEncVal) -> - BinL = lists:map(fun(L) when is_list(L) -> list_to_binary(L); - (B) -> B end,ListOfEncVal), - lists:sort(BinL). diff --git a/lib/asn1/src/asn1rt_per_bin_rt2ct.erl b/lib/asn1/src/asn1rt_per_bin_rt2ct.erl deleted file mode 100644 index 5997232f13..0000000000 --- a/lib/asn1/src/asn1rt_per_bin_rt2ct.erl +++ /dev/null @@ -1,1587 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2002-2012. All Rights Reserved. -%% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% -%% --module(asn1rt_per_bin_rt2ct). -%% encoding / decoding of PER aligned - --include("asn1_records.hrl"). - --export([decode_fragmented/3]). --export([setchoiceext/1, setext/1, fixoptionals/3, fixextensions/2, - skipextensions/3, getbit/1, getchoice/3 ]). --export([set_choice/3, encode_integer/2, encode_integer/3 ]). --export([encode_small_number/1, - encode_length/2, - encode_small_length/1, - decode_compact_bit_string/3]). --export([encode_bit_string/3, decode_bit_string/3 ]). --export([encode_octet_string/2, - encode_object_identifier/1, decode_object_identifier/1, - encode_real/1, decode_real/1, - encode_relative_oid/1, decode_relative_oid/1, - complete/1]). - --export([encode_open_type/2, decode_open_type/2]). - --export([encode_GeneralString/2, decode_GeneralString/2, - encode_GraphicString/2, decode_GraphicString/2, - encode_TeletexString/2, decode_TeletexString/2, - encode_VideotexString/2, decode_VideotexString/2, - encode_ObjectDescriptor/2, decode_ObjectDescriptor/1, - encode_UTF8String/1,decode_UTF8String/1 - ]). - --export([encode_unconstrained_number/1, - encode_octet_string/3, - encode_known_multiplier_string/5, - decode_known_multiplier_string/5]). - - --export([eint_positive/1]). --export([pre_complete_bits/2]). - --define('16K',16384). --define('32K',32768). --define('64K',65536). - -%%-------------------------------------------------------- -%% setchoiceext(InRootSet) -> [{bit,X}] -%% X is set to 1 when InRootSet==false -%% X is set to 0 when InRootSet==true -%% -setchoiceext(true) -> - [0]; -setchoiceext(false) -> - [1]. - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% setext(true|false) -> CompleteList -%% - -setext(false) -> -% [{debug,ext},{bits,1,0}]; - [0]; -setext(true) -> -% [{debug,ext},{bits,1,1}]; - [1]. - -fixoptionals(OptList,_OptLength,Val) when is_tuple(Val) -> -% Bits = fixoptionals(OptList,Val,0), -% {Val,{bits,OptLength,Bits}}; -% {Val,[10,OptLength,Bits]}; - {Val,fixoptionals(OptList,Val,[])}; - -fixoptionals([],_,Acc) -> - %% Optbits - lists:reverse(Acc); -fixoptionals([{Pos,DefVal}|Ot],Val,Acc) -> - case element(Pos,Val) of - asn1_DEFAULT -> fixoptionals(Ot,Val,[0|Acc]); - DefVal -> fixoptionals(Ot,Val,[0|Acc]); - _ -> fixoptionals(Ot,Val,[1|Acc]) - end; -fixoptionals([Pos|Ot],Val,Acc) -> - case element(Pos,Val) of - asn1_NOVALUE -> fixoptionals(Ot,Val,[0|Acc]); - asn1_DEFAULT -> fixoptionals(Ot,Val,[0|Acc]); - _ -> fixoptionals(Ot,Val,[1|Acc]) - end. - - -fixextensions({ext,ExtPos,ExtNum},Val) -> - case fixextensions(ExtPos,ExtNum+ExtPos,Val,0) of - 0 -> []; - ExtBits -> - [encode_small_length(ExtNum),pre_complete_bits(ExtNum,ExtBits)] - end. - -fixextensions(Pos,MaxPos,_,Acc) when Pos >= MaxPos -> - Acc; -fixextensions(Pos,ExtPos,Val,Acc) -> - Bit = case catch(element(Pos+1,Val)) of - asn1_NOVALUE -> - 0; - asn1_NOEXTVALUE -> - 0; - {'EXIT',_} -> - 0; - _ -> - 1 - end, - fixextensions(Pos+1,ExtPos,Val,(Acc bsl 1)+Bit). - -skipextensions(Bytes,Nr,ExtensionBitstr) when is_bitstring(ExtensionBitstr) -> - Prev = Nr - 1, - case ExtensionBitstr of - <<_:Prev,1:1,_/bitstring>> -> - {_,Bytes2} = decode_open_type(Bytes,[]), - skipextensions(Bytes2, Nr+1, ExtensionBitstr); - <<_:Prev,0:1,_/bitstring>> -> - skipextensions(Bytes, Nr+1, ExtensionBitstr); - _ -> - Bytes - 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}). - - -%% 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}. - - -getbits(Buffer,Num) when is_bitstring(Buffer) -> - <<Bs:Num,Rest/bitstring>> = Buffer, - {Bs,Rest}. - -align(Bin) when is_binary(Bin) -> - Bin; -align(BitStr) when is_bitstring(BitStr) -> - AlignBits = bit_size(BitStr) rem 8, - <<_:AlignBits,Rest/binary>> = BitStr, - Rest. - - -%% First align buffer, then pick the first Num octets. -%% Returns octets as an integer with bit significance as in buffer. -getoctets(Buffer,Num) when is_binary(Buffer) -> - <<Val:Num/integer-unit:8,RestBin/binary>> = Buffer, - {Val,RestBin}; -getoctets(Buffer,Num) when is_bitstring(Buffer) -> - AlignBits = bit_size(Buffer) rem 8, - <<_:AlignBits,Val:Num/integer-unit:8,RestBin/binary>> = Buffer, - {Val,RestBin}. - - -%% First align buffer, then pick the first Num octets. -%% Returns octets as a binary -getoctets_as_bin(Bin,Num) when is_binary(Bin) -> - <<Octets:Num/binary,RestBin/binary>> = Bin, - {Octets,RestBin}; -getoctets_as_bin(Bin,Num) when is_bitstring(Bin) -> - AlignBits = bit_size(Bin) rem 8, - <<_:AlignBits,Val:Num/binary,RestBin/binary>> = Bin, - {Val,RestBin}. - - -%% same as above but returns octets as a List -getoctets_as_list(Buffer,Num) -> - {Bin,Buffer2} = getoctets_as_bin(Buffer,Num), - {binary_to_list(Bin),Buffer2}. -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% set_choice(Alt,Choices,Altnum) -> ListofBitSettings -%% Alt = atom() -%% Altnum = integer() | {integer(),integer()}% number of alternatives -%% Choices = [atom()] | {[atom()],[atom()]} -%% When Choices is a tuple the first list is the Rootset and the -%% second is the Extensions and then Altnum must also be a tuple with the -%% lengths of the 2 lists -%% -set_choice(Alt,{L1,L2},{Len1,_Len2}) -> - case set_choice_tag(Alt,L1) of - N when is_integer(N), Len1 > 1 -> -% [{bits,1,0}, % the value is in the root set -% encode_constrained_number({0,Len1-1},N)]; - [0, % the value is in the root set - encode_constrained_number({0,Len1-1},N)]; - N when is_integer(N) -> -% [{bits,1,0}]; % no encoding if only 0 or 1 alternative - [0]; % no encoding if only 0 or 1 alternative - false -> -% [{bits,1,1}, % extension value - [1, % extension value - case set_choice_tag(Alt,L2) of - N2 when is_integer(N2) -> - encode_small_number(N2); - false -> - unknown_choice_alt - end] - end; -set_choice(Alt,L,Len) -> - case set_choice_tag(Alt,L) of - N when is_integer(N), Len > 1 -> - encode_constrained_number({0,Len-1},N); - N when is_integer(N) -> - []; % no encoding if only 0 or 1 alternative - false -> - [unknown_choice_alt] - end. - -set_choice_tag(Alt,Choices) -> - set_choice_tag(Alt,Choices,0). - -set_choice_tag(Alt,[Alt|_Rest],Tag) -> - Tag; -set_choice_tag(Alt,[_H|Rest],Tag) -> - set_choice_tag(Alt,Rest,Tag+1); -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) -%% | binary -%% Contraint = not used in this version -%% -encode_open_type(_Constraint, Val) when is_list(Val) -> - Bin = list_to_binary(Val), - case size(Bin) of - Size when Size>255 -> - [encode_length(undefined,Size),[21,<<Size:16>>,Bin]]; - Size -> - [encode_length(undefined,Size),[20,Size,Bin]] - end; -encode_open_type(_Constraint, Val) when is_binary(Val) -> - case size(Val) of - Size when Size>255 -> - [encode_length(undefined,size(Val)),[21,<<Size:16>>,Val]]; % octets implies align - Size -> - [encode_length(undefined,Size),[20,Size,Val]] - end. -%% the binary_to_list is not optimal but compatible with the current solution - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_open_type(Buffer,Constraint) -> Value -%% Constraint is not used in this version -%% Buffer = [byte] with PER encoded data -%% Value = [byte] with decoded data (which must be decoded again as some type) -%% -decode_open_type(Bytes, _Constraint) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - getoctets_as_bin(Bytes2,Len). - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_integer(Constraint,Value,NamedNumberList) -> CompleteList -%% encode_integer(Constraint,Value) -> CompleteList -%% encode_integer(Constraint,{Name,Value}) -> CompleteList -%% -%% -encode_integer(C,V,NamedNumberList) when is_atom(V) -> - case lists:keysearch(V,1,NamedNumberList) of - {value,{_,NewV}} -> - encode_integer(C,NewV); - _ -> - exit({error,{asn1,{namednumber,V}}}) - end; -encode_integer(C,V,_NamedNumberList) when is_integer(V) -> - encode_integer(C,V); -encode_integer(C,{Name,V},NamedNumberList) when is_atom(Name) -> - encode_integer(C,V,NamedNumberList). - -encode_integer(C,{Name,Val}) when is_atom(Name) -> - encode_integer(C,Val); - -encode_integer([{Rc,_Ec}],Val) when is_tuple(Rc) -> % XXX when is this invoked? First argument most often a list,...Ok this is the extension case...but it doesn't work. - case (catch encode_integer([Rc],Val)) of - {'EXIT',{error,{asn1,_}}} -> -% [{bits,1,1},encode_unconstrained_number(Val)]; - [1,encode_unconstrained_number(Val)]; - Encoded -> -% [{bits,1,0},Encoded] - [0,Encoded] - end; - -encode_integer([],Val) -> - encode_unconstrained_number(Val); -%% The constraint is the effective constraint, and in this case is a number -encode_integer([{'SingleValue',V}],V) -> - []; -encode_integer([{'ValueRange',VR={Lb,Ub},Range,PreEnc}],Val) when Val >= Lb, - Ub >= Val -> - %% this case when NamedNumberList - encode_constrained_number(VR,Range,PreEnc,Val); -encode_integer([{'ValueRange',{Lb,'MAX'}}],Val) -> - encode_semi_constrained_number(Lb,Val); -encode_integer([{'ValueRange',{'MIN',_}}],Val) -> - encode_unconstrained_number(Val); -encode_integer([{'ValueRange',VR={_Lb,_Ub}}],Val) -> - encode_constrained_number(VR,Val); -encode_integer(_,Val) -> - exit({error,{asn1,{illegal_value,Val}}}). - - -%% X.691:10.6 Encoding of a normally small non-negative whole number -%% Use this for encoding of CHOICE index if there is an extension marker in -%% the CHOICE -encode_small_number({Name,Val}) when is_atom(Name) -> - encode_small_number(Val); -encode_small_number(Val) when Val =< 63 -> -% [{bits,1,0},{bits,6,Val}]; -% [{bits,7,Val}]; % same as above but more efficient - [10,7,Val]; % same as above but more efficient -encode_small_number(Val) -> -% [{bits,1,1},encode_semi_constrained_number(0,Val)]. - [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 -%% might be an optimization encode_semi_constrained_number(0,Val) -> -encode_semi_constrained_number(C,{Name,Val}) when is_atom(Name) -> - encode_semi_constrained_number(C,Val); -encode_semi_constrained_number({Lb,'MAX'},Val) -> - encode_semi_constrained_number(Lb,Val); -encode_semi_constrained_number(Lb,Val) -> - Val2 = Val - Lb, - Oct = eint_positive(Val2), - Len = length(Oct), - if - Len < 128 -> - %{octets,[Len|Oct]}; % equiv with encode_length(undefined,Len) but faster - [20,Len+1,[Len|Oct]]; - Len < 256 -> - [encode_length(undefined,Len),[20,Len,Oct]]; - true -> - [encode_length(undefined,Len),[21,<<Len:16>>,Oct]] - end. - -decode_semi_constrained_number(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {V,Bytes3} = getoctets(Bytes2,Len), - {V,Bytes3}. - -encode_constrained_number({Lb,_Ub},_Range,{bits,N},Val) -> - Val2 = Val-Lb, -% {bits,N,Val2}; - [10,N,Val2]; -encode_constrained_number({Lb,_Ub},_Range,{octets,N},Val) when N < 256-> - %% N is 8 or 16 (1 or 2 octets) - Val2 = Val-Lb, -% {octets,<<Val2:N/unit:8>>}; - [20,N,Val2]; -encode_constrained_number({Lb,_Ub},_Range,{octets,N},Val) -> % N>255 - %% N is 8 or 16 (1 or 2 octets) - Val2 = Val-Lb, -% {octets,<<Val2:N/unit:8>>}; - [21,<<N:16>>,Val2]; -encode_constrained_number({Lb,_Ub},Range,_,Val) -> - Val2 = Val-Lb, - if - Range =< 16#1000000 -> % max 3 octets - Octs = eint_positive(Val2), -% [encode_length({1,3},size(Octs)),{octets,Octs}]; - L = length(Octs), - [encode_length({1,3},L),[20,L,Octs]]; - Range =< 16#100000000 -> % max 4 octets - Octs = eint_positive(Val2), -% [encode_length({1,4},size(Octs)),{octets,Octs}]; - L = length(Octs), - [encode_length({1,4},L),[20,L,Octs]]; - Range =< 16#10000000000 -> % max 5 octets - Octs = eint_positive(Val2), -% [encode_length({1,5},size(Octs)),{octets,Octs}]; - L = length(Octs), - [encode_length({1,5},L),[20,L,Octs]]; - true -> - exit({not_supported,{integer_range,Range}}) - end. - -encode_constrained_number(Range,{Name,Val}) when is_atom(Name) -> - encode_constrained_number(Range,Val); -encode_constrained_number({Lb,Ub},Val) when Val >= Lb, Ub >= Val -> - Range = Ub - Lb + 1, - Val2 = Val - Lb, - if - Range == 1 -> []; - Range == 2 -> -% Size = {bits,1,Val2}; - [Val2]; - Range =< 4 -> -% Size = {bits,2,Val2}; - [10,2,Val2]; - Range =< 8 -> - [10,3,Val2]; - Range =< 16 -> - [10,4,Val2]; - Range =< 32 -> - [10,5,Val2]; - Range =< 64 -> - [10,6,Val2]; - Range =< 128 -> - [10,7,Val2]; - Range =< 255 -> - [10,8,Val2]; - Range =< 256 -> -% Size = {octets,[Val2]}; - [20,1,Val2]; - Range =< 65536 -> -% Size = {octets,<<Val2:16>>}; - [20,2,<<Val2:16>>]; - Range =< (1 bsl (255*8)) -> - Octs = binary:encode_unsigned(Val2), - RangeOcts = binary:encode_unsigned(Range - 1), - OctsLen = erlang:byte_size(Octs), - RangeOctsLen = erlang:byte_size(RangeOcts), - LengthBitsNeeded = minimum_bits(RangeOctsLen - 1), - [10,LengthBitsNeeded,OctsLen-1,20,OctsLen,Octs]; - true -> - exit({not_supported,{integer_range,Range}}) - end; -encode_constrained_number({_,_},Val) -> - exit({error,{asn1,{illegal_value,Val}}}). - -decode_constrained_number(Buffer,VR={Lb,Ub}) -> - Range = Ub - Lb + 1, - decode_constrained_number(Buffer,VR,Range). - -decode_constrained_number(Buffer,{Lb,_Ub},Range) -> - % Val2 = Val - Lb, - {Val,Remain} = - if - Range == 1 -> - {0,Buffer}; - Range == 2 -> - getbits(Buffer,1); - Range =< 4 -> - getbits(Buffer,2); - Range =< 8 -> - getbits(Buffer,3); - Range =< 16 -> - getbits(Buffer,4); - Range =< 32 -> - getbits(Buffer,5); - Range =< 64 -> - getbits(Buffer,6); - Range =< 128 -> - getbits(Buffer,7); - Range =< 255 -> - getbits(Buffer,8); - Range =< 256 -> - getoctets(Buffer,1); - Range =< 65536 -> - getoctets(Buffer,2); - Range =< (1 bsl (255*8)) -> - OList = binary:bin_to_list(binary:encode_unsigned(Range - 1)), - RangeOctLen = length(OList), - {Len, Bytes} = decode_length(Buffer, {1, RangeOctLen}), - {Octs, RestBytes} = getoctets_as_bin(Bytes, Len), - {binary:decode_unsigned(Octs), RestBytes}; - true -> - exit({not_supported,{integer_range,Range}}) - end, - {Val+Lb,Remain}. - -%% For some reason the minimum bits needed in the length field in -%% the encoding of constrained whole numbers must always be at least 2? -minimum_bits(N) when N < 4 -> 2; -minimum_bits(N) when N < 8 -> 3; -minimum_bits(N) when N < 16 -> 4; -minimum_bits(N) when N < 32 -> 5; -minimum_bits(N) when N < 64 -> 6; -minimum_bits(N) when N < 128 -> 7; -minimum_bits(_N) -> 8. - -%% X.691:10.8 Encoding of an unconstrained whole number - -encode_unconstrained_number(Val) when Val >= 0 -> - Oct = eint(Val,[]), - Len = length(Oct), - if - Len < 128 -> - %{octets,[Len|Oct]}; % equiv with encode_length(undefined,Len) but faster - [20,Len+1,[Len|Oct]]; - Len < 256 -> -% [encode_length(undefined,Len),20,Len,Oct]; - [20,Len+2,<<2:2,Len:14>>,Oct];% equiv with encode_length(undefined,Len) but faster - true -> -% [encode_length(undefined,Len),{octets,Oct}] - [encode_length(undefined,Len),[21,<<Len:16>>,Oct]] - end; -encode_unconstrained_number(Val) -> % negative - Oct = enint(Val,[]), - Len = length(Oct), - if - Len < 128 -> -% {octets,[Len|Oct]}; % equiv with encode_length(undefined,Len) but faster - [20,Len+1,[Len|Oct]];% equiv with encode_length(undefined,Len) but faster - Len < 256 -> -% [encode_length(undefined,Len),20,Len,Oct]; - [20,Len+2,<<2:2,Len:14>>,Oct];% equiv with encode_length(undefined,Len) but faster - true -> - %[encode_length(undefined,Len),{octets,Oct}] - [encode_length(undefined,Len),[21,<<Len:16>>,Oct]] - end. - - -%% used for positive Values which don't need a sign bit -%% returns a list -eint_positive(Val) -> - case eint(Val,[]) of - [0,B1|T] -> - [B1|T]; - T -> - T - end. - - -eint(0, [B|Acc]) when B < 128 -> - [B|Acc]; -eint(N, Acc) -> - eint(N bsr 8, [N band 16#ff| Acc]). - -enint(-1, [B1|T]) when B1 > 127 -> - [B1|T]; -enint(N, Acc) -> - enint(N bsr 8, [N band 16#ff|Acc]). - -%% X.691:10.9 Encoding of a length determinant -%%encode_small_length(undefined,Len) -> % null means no UpperBound -%% encode_small_number(Len). - -%% X.691:10.9.3.5 -%% X.691:10.9.3.7 -encode_length(undefined,Len) -> % un-constrained - if - Len < 128 -> -% {octets,[Len]}; - [20,1,Len]; - Len < 16384 -> - %{octets,<<2:2,Len:14>>}; - [20,2,<<2:2,Len:14>>]; - true -> % should be able to endode length >= 16384 i.e. fragmented length - exit({error,{asn1,{encode_length,{nyi,above_16k}}}}) - end; - -encode_length({0,'MAX'},Len) -> - encode_length(undefined,Len); -encode_length(Vr={Lb,Ub},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(undefined,Len); -encode_length({Vr={Lb,Ub},Ext},Len) - when Ub =< 65535 ,Lb >= 0,Len=<Ub, is_list(Ext) -> - %% constrained extensible - [0,encode_constrained_number(Vr,Len)]; -encode_length({{Lb,_},Ext},Len) when is_list(Ext) -> - [1,encode_semi_constrained_number(Lb,Len)]; -encode_length(SingleValue,_Len) when is_integer(SingleValue) -> - []. - -%% X.691 10.9.3.4 (only used for length of bitmap that prefixes extension -%% additions in a sequence or set -encode_small_length(Len) when Len =< 64 -> -%% [{bits,1,0},{bits,6,Len-1}]; -% {bits,7,Len-1}; % the same as above but more efficient - [10,7,Len-1]; -encode_small_length(Len) -> -% [{bits,1,1},encode_length(undefined,Len)]. - [1,encode_length(undefined,Len)]. - - -decode_length(Buffer,undefined) -> % un-constrained - case align(Buffer) of - <<0:1,Oct:7,Rest/binary>> -> - {Oct,Rest}; - <<2:2,Val:14,Rest/binary>> -> - {Val,Rest}; - <<3:2,_Val:14,_Rest/binary>> -> - %% this case should be fixed - exit({error,{asn1,{decode_length,{nyi,above_16k}}}}) - end; - -decode_length(Buffer,{Lb,Ub}) when Ub =< 65535 ,Lb >= 0 -> % constrained - decode_constrained_number(Buffer,{Lb,Ub}); -decode_length(Buffer,{Lb,_Ub}) when is_integer(Lb), Lb >= 0 -> % Ub > 65535 - decode_length(Buffer,undefined); -decode_length(Buffer,{{Lb,Ub},Ext}) when is_list(Ext) -> - case getbit(Buffer) of - {0,Buffer2} -> - decode_length(Buffer2, {Lb,Ub}); - {1,Buffer2} -> - decode_length(Buffer2, undefined) - end; - - -%When does this case occur with {_,_Lb,Ub} ?? -% X.691:10.9.3.5 -decode_length(Bin,{_,_Lb,_Ub}) -> % Unconstrained or large Ub NOTE! this case does not cover case when Ub > 65535 - case Bin of - <<0:1,Val:7,Rest/bitstring>> -> - {Val,Rest}; - _ -> - case align(Bin) of - <<2:2,Val:14,Rest/binary>> -> - {Val,Rest}; - <<3:2,_:14,_Rest/binary>> -> - exit({error,{asn1,{decode_length,{nyi,length_above_64K}}}}) - end - end; -decode_length(Buffer,SingleValue) when is_integer(SingleValue) -> - {SingleValue,Buffer}. - - - -%%=============================================================================== -%%=============================================================================== -%%=============================================================================== -%% Bitstring value, ITU_T X.690 Chapter 8.5 -%%=============================================================================== -%%=============================================================================== -%%=============================================================================== - -%%=============================================================================== -%% encode bitstring value -%%=============================================================================== - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% bitstring NamedBitList -%% Val can be of: -%% - [identifiers] where only named identifers are set to one, -%% the Constraint must then have some information of the -%% bitlength. -%% - [list of ones and zeroes] all bits -%% - integer value representing the bitlist -%% C is constraint Len, only valid when identifiers - - -%% when the value is a list of {Unused,BinBits}, where -%% Unused = integer(), -%% BinBits = binary(). - -encode_bit_string(C,Bin={Unused,BinBits},NamedBitList) when is_integer(Unused), - is_binary(BinBits) -> - encode_bin_bit_string(C,Bin,NamedBitList); - -%% when the value is a list of named bits - -encode_bit_string(C, LoNB=[FirstVal | _RestVal], NamedBitList) when is_atom(FirstVal) -> - ToSetPos = get_all_bitposes(LoNB, NamedBitList, []), - BitList = make_and_set_list(ToSetPos,0), - encode_bit_string(C,BitList,NamedBitList);% consider the constraint - -encode_bit_string(C, BL=[{bit,_} | _RestVal], NamedBitList) -> - ToSetPos = get_all_bitposes(BL, NamedBitList, []), - BitList = make_and_set_list(ToSetPos,0), - encode_bit_string(C,BitList,NamedBitList); - -%% when the value is a list of ones and zeroes -encode_bit_string(Int, BitListValue, _) - when is_list(BitListValue),is_integer(Int),Int =< 16 -> - %% The type is constrained by a single value size constraint - %% range_check(Int,length(BitListValue)), - [40,Int,length(BitListValue),BitListValue]; -encode_bit_string(Int, BitListValue, _) - when is_list(BitListValue),is_integer(Int), Int =< 255 -> - %% The type is constrained by a single value size constraint - %% range_check(Int,length(BitListValue)), - [2,40,Int,length(BitListValue),BitListValue]; -encode_bit_string(Int, BitListValue, _) - when is_list(BitListValue),is_integer(Int), Int < ?'64K' -> - {Code,DesiredLength,Length} = - case length(BitListValue) of - B1 when B1 > Int -> - exit({error,{'BIT_STRING_length_greater_than_SIZE', - Int,BitListValue}}); - B1 when B1 =< 255,Int =< 255 -> - {40,Int,B1}; - B1 when B1 =< 255 -> - {42,<<Int:16>>,B1}; - B1 -> - {43,<<Int:16>>,<<B1:16>>} - end, - %% The type is constrained by a single value size constraint - [2,Code,DesiredLength,Length,BitListValue]; -encode_bit_string(no, BitListValue,[]) - when is_list(BitListValue) -> - [encode_length(undefined,length(BitListValue)), - 2,BitListValue]; -encode_bit_string({{Fix,Fix},Ext}, BitListValue,[]) - when is_integer(Fix), is_list(Ext) -> - case length(BitListValue) of - Len when Len =< Fix -> - [0,encode_bit_string(Fix,BitListValue,[])]; - _ -> - [1,encode_bit_string(no,BitListValue,[])] - end; -encode_bit_string(C, BitListValue,[]) - when is_list(BitListValue) -> - [encode_length(C,length(BitListValue)), - 2,BitListValue]; -encode_bit_string(no, BitListValue,_NamedBitList) - when is_list(BitListValue) -> - %% this case with an unconstrained BIT STRING can be made more efficient - %% if the complete driver can take a special code so the length field - %% is encoded there. - NewBitLVal = lists:reverse(lists:dropwhile(fun(0)->true;(1)->false end, - lists:reverse(BitListValue))), - [encode_length(undefined,length(NewBitLVal)), - 2,NewBitLVal]; -encode_bit_string({{Fix,Fix},Ext}, BitListValue,_NamedBitList) - when is_integer(Fix), is_list(Ext) -> - case length(BitListValue) of - Len when Len =< Fix -> - [0,encode_bit_string(Fix,BitListValue,_NamedBitList)]; - _ -> - [1,encode_bit_string(no,BitListValue,_NamedBitList)] - end; -encode_bit_string(C,BitListValue,_NamedBitList) - when is_list(BitListValue) ->% C = {_,'MAX'} -% NewBitLVal = lists:reverse(lists:dropwhile(fun(0)->true;(1)->false end, -% lists:reverse(BitListValue))), - NewBitLVal = bit_string_trailing_zeros(BitListValue,C), - [encode_length(C,length(NewBitLVal)), - 2,NewBitLVal]; - - -%% when the value is an integer -encode_bit_string(C, IntegerVal, NamedBitList) when is_integer(IntegerVal)-> - BitList = int_to_bitlist(IntegerVal), - encode_bit_string(C,BitList,NamedBitList); - -%% when the value is a tuple -encode_bit_string(C,{Name,Val}, NamedBitList) when is_atom(Name) -> - encode_bit_string(C,Val,NamedBitList). - -bit_string_trailing_zeros(BitList,C) when is_integer(C) -> - bit_string_trailing_zeros1(BitList,C,C); -bit_string_trailing_zeros(BitList,{Lb,Ub}) when is_integer(Lb) -> - bit_string_trailing_zeros1(BitList,Lb,Ub); -bit_string_trailing_zeros(BitList,{{Lb,Ub},_}) when is_integer(Lb) -> - bit_string_trailing_zeros1(BitList,Lb,Ub); -bit_string_trailing_zeros(BitList,_) -> - BitList. - -bit_string_trailing_zeros1(BitList,Lb,Ub) -> - case length(BitList) of - Lb -> BitList; - B when B<Lb -> BitList++lists:duplicate(Lb-B,0); - D -> F = fun(L,LB,LB,_,_)->lists:reverse(L); - ([0|R],L1,LB,UB,Fun)->Fun(R,L1-1,LB,UB,Fun); - (L,L1,_,UB,_)when L1 =< UB -> lists:reverse(L); - (_,_L1,_,_,_) ->exit({error,{list_length_BIT_STRING, - BitList}}) end, - F(lists:reverse(BitList),D,Lb,Ub,F) - end. - -%% encode_bin_bit_string/3, when value is a tuple of Unused and BinBits. -%% Unused = integer(),i.e. number unused bits in least sign. byte of -%% BinBits = binary(). -encode_bin_bit_string(C,{Unused,BinBits},_NamedBitList) - when is_integer(C),C=<16 -> - range_check(C,bit_size(BinBits) - Unused), - [45,C,size(BinBits),BinBits]; -encode_bin_bit_string(C,{Unused,BinBits},_NamedBitList) - when is_integer(C), C =< 255 -> - range_check(C,bit_size(BinBits) - Unused), - [2,45,C,size(BinBits),BinBits]; -encode_bin_bit_string(C,{Unused,BinBits},_NamedBitList) - when is_integer(C), C =< 65535 -> - range_check(C,bit_size(BinBits) - Unused), - case size(BinBits) of - Size when Size =< 255 -> - [2,46,<<C:16>>,Size,BinBits]; - Size -> - [2,47,<<C:16>>,<<Size:16>>,BinBits] - end; -%% encode_bin_bit_string(C,{_Unused,BinBits},_NamedBitList) -%% when is_integer(C) -> -%% exit({error,{asn1, {bitstring_size, not_supported, C}}}); -encode_bin_bit_string(C,UnusedAndBin={_,_},NamedBitList) -> -% UnusedAndBin1 = {Unused1,Bin1} = - {Unused1,Bin1} = - %% removes all trailing bits if NamedBitList is not empty - remove_trailing_bin(NamedBitList,UnusedAndBin), - case C of - {Lb,Ub} when is_integer(Lb),is_integer(Ub) -> -% [encode_length({Lb,Ub},size(Bin1)*8 - Unused1), -% align,UnusedAndBin1]; - Size=size(Bin1), - [encode_length({Lb,Ub},Size*8 - Unused1), - 2,octets_unused_to_complete(Unused1,Size,Bin1)]; - no -> - Size=size(Bin1), - [encode_length(undefined,Size*8 - Unused1), - 2,octets_unused_to_complete(Unused1,Size,Bin1)]; - {{Fix,Fix},Ext} when is_integer(Fix),is_list(Ext) -> - %%[encode_length(Sc,size(Bin1)*8 - Unused1), - case size(Bin1)*8 - Unused1 of - Size when Size =< Fix -> - [0,encode_bin_bit_string(Fix,UnusedAndBin,NamedBitList)]; - _Size -> - [1,encode_bin_bit_string(no,UnusedAndBin,NamedBitList)] - end; - Sc -> - Size=size(Bin1), - [encode_length(Sc,Size*8 - Unused1), - 2,octets_unused_to_complete(Unused1,Size,Bin1)] - end. - -range_check(C,C) when is_integer(C) -> - ok; -range_check(C1,C2) when is_integer(C1) -> - exit({error,{asn1,{bit_string_out_of_range,{C1,C2}}}}). - -remove_trailing_bin([], {Unused,Bin}) -> - {Unused,Bin}; -remove_trailing_bin(_NamedNumberList,{_Unused,<<>>}) -> - {0,<<>>}; -remove_trailing_bin(NamedNumberList, {_Unused,Bin}) -> - Size = size(Bin)-1, - <<Bfront:Size/binary, LastByte:8>> = Bin, - %% clear the Unused bits to be sure -% LastByte1 = LastByte band (((1 bsl Unused) -1) bxor 255),% why this??? - Unused1 = trailingZeroesInNibble(LastByte band 15), - Unused2 = - case Unused1 of - 4 -> - 4 + trailingZeroesInNibble(LastByte bsr 4); - _ -> Unused1 - end, - case Unused2 of - 8 -> - remove_trailing_bin(NamedNumberList,{0,Bfront}); - _ -> - {Unused2,Bin} - end. - - -trailingZeroesInNibble(0) -> - 4; -trailingZeroesInNibble(1) -> - 0; -trailingZeroesInNibble(2) -> - 1; -trailingZeroesInNibble(3) -> - 0; -trailingZeroesInNibble(4) -> - 2; -trailingZeroesInNibble(5) -> - 0; -trailingZeroesInNibble(6) -> - 1; -trailingZeroesInNibble(7) -> - 0; -trailingZeroesInNibble(8) -> - 3; -trailingZeroesInNibble(9) -> - 0; -trailingZeroesInNibble(10) -> - 1; -trailingZeroesInNibble(11) -> - 0; -trailingZeroesInNibble(12) -> %#1100 - 2; -trailingZeroesInNibble(13) -> - 0; -trailingZeroesInNibble(14) -> - 1; -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:keysearch(Pos,2,Names) of - {value,{Name,_}} -> - bit_list_or_named1(Pos+1,Bt,Names,[Name|Acc]); - _ -> - bit_list_or_named1(Pos+1,Bt,Names,[{bit,Pos}|Acc]) - end; -bit_list_or_named1(_Pos,[],_Names,Acc) -> - lists:reverse(Acc). - - - -%%%%%%%%%%%%%%% -%% - -int_to_bitlist(Int) when is_integer(Int), Int > 0 -> - [Int band 1 | int_to_bitlist(Int bsr 1)]; -int_to_bitlist(0) -> - []. - - -%%%%%%%%%%%%%%%%%% -%% get_all_bitposes([list of named bits to set], named_bit_db, []) -> -%% [sorted_list_of_bitpositions_to_set] - -get_all_bitposes([{bit,ValPos}|Rest], NamedBitList, Ack) -> - get_all_bitposes(Rest, NamedBitList, [ValPos | Ack ]); - -get_all_bitposes([Val | Rest], NamedBitList, Ack) -> - case lists:keysearch(Val, 1, NamedBitList) of - {value, {_ValName, ValPos}} -> - get_all_bitposes(Rest, NamedBitList, [ValPos | Ack]); - _ -> - exit({error,{asn1, {bitstring_namedbit, Val}}}) - end; -get_all_bitposes([], _NamedBitList, Ack) -> - lists:sort(Ack). - -%%%%%%%%%%%%%%%%%% -%% make_and_set_list([list of positions to set to 1])-> -%% returns list with all in SetPos set. -%% in positioning in list the first element is 0, the second 1 etc.., but -%% - -make_and_set_list([XPos|SetPos], XPos) -> - [1 | make_and_set_list(SetPos, XPos + 1)]; -make_and_set_list([Pos|SetPos], XPos) -> - [0 | make_and_set_list([Pos | SetPos], XPos + 1)]; -make_and_set_list([], _) -> - []. - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% X.691:16 -%% encode_octet_string(Constraint,ExtensionMarker,Val) -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -encode_octet_string(C,Val) -> - encode_octet_string(C,false,Val). - -encode_octet_string(C,Bool,{_Name,Val}) -> - encode_octet_string(C,Bool,Val); -encode_octet_string(_C,true,_Val) -> - exit({error,{asn1,{'not_supported',extensionmarker}}}); -encode_octet_string(SZ={_,_},false,Val) -> -% [encode_length(SZ,length(Val)),align, -% {octets,Val}]; - Len = length(Val), - try - [encode_length(SZ,Len),2, - octets_to_complete(Len,Val)] - catch - exit:{error,{asn1,{encode_length,_}}} -> - encode_fragmented_octet_string(Val) - end; -encode_octet_string(SZ,false,Val) when is_list(SZ) -> - Len = length(Val), - try - [encode_length({hd(SZ),lists:max(SZ)},Len),2, - octets_to_complete(Len,Val)] - catch - exit:{error,{asn1,{encode_length,_}}} -> - encode_fragmented_octet_string(Val) - end; -encode_octet_string(Sv,false,Val) when is_integer(Sv) -> - encode_fragmented_octet_string(Val); -encode_octet_string(no,false,Val) -> - Len = length(Val), - try - [encode_length(undefined,Len),2, - octets_to_complete(Len,Val)] - catch - exit:{error,{asn1,{encode_length,_}}} -> - encode_fragmented_octet_string(Val) - end; -encode_octet_string(C,_,_) -> - exit({error,{not_implemented,C}}). - -encode_fragmented_octet_string(Val) -> - Bin = iolist_to_binary(Val), - efos_1(Bin). - -efos_1(<<B1:16#C000/binary,B2:16#4000/binary,T/binary>>) -> - [20,1,<<3:2,4:6>>, - octets_to_complete(16#C000, B1), - octets_to_complete(16#4000, B2)|efos_1(T)]; -efos_1(<<B:16#C000/binary,T/binary>>) -> - [20,1,<<3:2,3:6>>,octets_to_complete(16#C000, B)|efos_1(T)]; -efos_1(<<B:16#8000/binary,T/binary>>) -> - [20,1,<<3:2,2:6>>,octets_to_complete(16#8000, B)|efos_1(T)]; -efos_1(<<B:16#4000/binary,T/binary>>) -> - [20,1,<<3:2,1:6>>,octets_to_complete(16#4000, B)|efos_1(T)]; -efos_1(<<>>) -> - [20,1,0]; -efos_1(<<B/bitstring>>) -> - Len = byte_size(B), - [encode_length(undefined, Len),octets_to_complete(Len, B)]. - -decode_fragmented(SegSz0, Buf0, Unit) -> - SegSz = SegSz0 * Unit * ?'16K', - <<Res:SegSz/bitstring,Buf/bitstring>> = Buf0, - decode_fragmented_1(Buf, Unit, Res). - -decode_fragmented_1(<<0:1,N:7,Buf0/bitstring>>, Unit, Res) -> - Sz = N*Unit, - <<S:Sz/bitstring,Buf/bitstring>> = Buf0, - {<<Res/bitstring,S/bitstring>>,Buf}; -decode_fragmented_1(<<1:1,0:1,N:14,Buf0/bitstring>>, Unit, Res) -> - Sz = N*Unit, - <<S:Sz/bitstring,Buf/bitstring>> = Buf0, - {<<Res/bitstring,S/bitstring>>,Buf}; -decode_fragmented_1(<<1:1,1:1,SegSz0:6,Buf0/bitstring>>, Unit, Res0) -> - SegSz = SegSz0 * Unit * ?'16K', - <<Frag:SegSz/bitstring,Buf/bitstring>> = Buf0, - Res = <<Res0/bitstring,Frag/bitstring>>, - decode_fragmented_1(Buf, Unit, Res). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% Restricted char string types -%% (NumericString, PrintableString,VisibleString,IA5String,BMPString,UniversalString) -%% X.691:26 and X.680:34-36 -%%encode_restricted_string(aligned,'BMPString',Constraints,Extension,Val) - - -encode_restricted_string(aligned,{Name,Val}) when is_atom(Name) -> - encode_restricted_string(aligned,Val); - -encode_restricted_string(aligned,Val) when is_list(Val)-> - Len = length(Val), - [encode_length(undefined,Len),octets_to_complete(Len,Val)]. - - -encode_known_multiplier_string(StringType,SizeC,NumBits,CharOutTab,{Name,Val}) when is_atom(Name) -> - encode_known_multiplier_string(StringType,SizeC,NumBits,CharOutTab,Val); -encode_known_multiplier_string(_StringType,SizeC,NumBits,CharOutTab,Val) -> - Result = chars_encode2(Val,NumBits,CharOutTab), - case SizeC of - Ub when is_integer(Ub), Ub*NumBits =< 16 -> - Result; - Ub when is_integer(Ub),Ub =<65535 -> % fixed length - [2,Result]; - {Ub,Lb} -> - [encode_length({Ub,Lb},length(Val)),2,Result]; - no -> - [encode_length(undefined,length(Val)),2,Result] - end. - -decode_restricted_string(Bytes,aligned) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - getoctets_as_list(Bytes2,Len). - -decode_known_multiplier_string(StringType,SizeC,NumBits,CharInTab,Bytes) -> - case SizeC of - Ub when is_integer(Ub), Ub*NumBits =< 16 -> - chars_decode(Bytes,NumBits,StringType,CharInTab,Ub); - Ub when is_integer(Ub),Ub =<65535 -> % fixed length - Bytes1 = align(Bytes), - chars_decode(Bytes1,NumBits,StringType,CharInTab,Ub); - Vl when is_list(Vl) -> - {Len,Bytes1} = decode_length(Bytes,{hd(Vl),lists:max(Vl)}), - Bytes2 = align(Bytes1), - chars_decode(Bytes2,NumBits,StringType,CharInTab,Len); - no -> - {Len,Bytes1} = decode_length(Bytes,undefined), - Bytes2 = align(Bytes1), - chars_decode(Bytes2,NumBits,StringType,CharInTab,Len); - {Lb,Ub}-> - {Len,Bytes1} = decode_length(Bytes,{Lb,Ub}), - Bytes2 = align(Bytes1), - chars_decode(Bytes2,NumBits,StringType,CharInTab,Len) - end. - -encode_GeneralString(_C,Val) -> - encode_restricted_string(aligned,Val). -decode_GeneralString(Bytes,_C) -> - decode_restricted_string(Bytes,aligned). - -encode_GraphicString(_C,Val) -> - encode_restricted_string(aligned,Val). -decode_GraphicString(Bytes,_C) -> - decode_restricted_string(Bytes,aligned). - -encode_ObjectDescriptor(_C,Val) -> - encode_restricted_string(aligned,Val). -decode_ObjectDescriptor(Bytes) -> - decode_restricted_string(Bytes,aligned). - -encode_TeletexString(_C,Val) -> % equivalent with T61String - encode_restricted_string(aligned,Val). -decode_TeletexString(Bytes,_C) -> - decode_restricted_string(Bytes,aligned). - -encode_VideotexString(_C,Val) -> - encode_restricted_string(aligned,Val). -decode_VideotexString(Bytes,_C) -> - decode_restricted_string(Bytes,aligned). - - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% getBMPChars(Bytes,Len) ->{BMPcharList,RemainingBytes} -%% -getBMPChars(<<T/binary>>, 0, Acc) -> - {lists:reverse(Acc),T}; -getBMPChars(<<0,O2,Bytes1/bitstring>>, Len, Acc) -> - getBMPChars(Bytes1,Len-1,[O2|Acc]); -getBMPChars(<<O1,O2,Bytes1/bitstring>>, Len, Acc) -> - getBMPChars(Bytes1,Len-1,[{0,0,O1,O2}|Acc]). - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% chars_encode(C,StringType,Value) -> ValueList -%% -%% encodes chars according to the per rules taking the constraint PermittedAlphabet -%% 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 -% {'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)}, -% chars_encode2(Value,NumBits,CharOutTab) -% end. - - -chars_encode2([H|T],NumBits,T1={Min,Max,notab}) when H =< Max, H >= Min -> -% [[10,NumBits,H-Min]|chars_encode2(T,NumBits,T1)]; - [pre_complete_bits(NumBits,H-Min)|chars_encode2(T,NumBits,T1)]; -chars_encode2([H|T],NumBits,T1={Min,Max,Tab}) when H =< Max, H >= Min -> -% [[10,NumBits,element(H-Min+1,Tab)]|chars_encode2(T,NumBits,T1)]; - [pre_complete_bits(NumBits,exit_if_false(H,element(H-Min+1,Tab)))| - chars_encode2(T,NumBits,T1)]; -chars_encode2([{A,B,C,D}|T],NumBits,T1={Min,_Max,notab}) -> - %% no value range check here (ought to be, but very expensive) -% [{bits,NumBits,(A*B*C*D)-Min}|chars_encode2(T,NumBits,{Min,Max,notab})]; -% [[10,NumBits,((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min]|chars_encode2(T,NumBits,T1)]; - [pre_complete_bits(NumBits, - ((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min)| - chars_encode2(T,NumBits,T1)]; -chars_encode2([H={A,B,C,D}|T],NumBits,{Min,Max,Tab}) -> - %% no value range check here (ought to be, but very expensive) - [pre_complete_bits(NumBits,exit_if_false(H,element(((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min,Tab)))|chars_encode2(T,NumBits,{Min,Max,notab})]; -chars_encode2([H|_T],_NumBits,{_Min,_Max,_Tab}) -> - exit({error,{asn1,{illegal_char_value,H}}}); -chars_encode2([],_,_) -> - []. - -exit_if_false(V,false)-> - exit({error,{asn1,{"illegal value according to Permitted alphabet constraint",V}}}); -exit_if_false(_,V) ->V. - -pre_complete_bits(NumBits,Val) when NumBits =< 8 -> - [10,NumBits,Val]; -pre_complete_bits(NumBits,Val) when NumBits =< 16 -> - [10,NumBits-8,Val bsr 8,10,8,(Val band 255)]; -pre_complete_bits(NumBits,Val) when NumBits =< 2040 -> % 255 * 8 -% LBUsed = NumBits rem 8, -% {Unused,Len} = case (8 - LBUsed) of -% 8 -> {0,NumBits div 8}; -% U -> {U,(NumBits div 8) + 1} -% end, -% NewVal = Val bsr LBUsed, -% [30,Unused,Len,<<NewVal:Len/unit:8,Val:LBUsed,0:Unused>>]. - Unused = (8 - (NumBits rem 8)) rem 8, - Len = NumBits + Unused, - [30,Unused,Len div 8,<<(Val bsl Unused):Len>>]. - - -chars_decode(Bytes,_,'BMPString',_,Len) -> - getBMPChars(Bytes,Len,[]); -chars_decode(Bytes,NumBits,_StringType,CharInTab,Len) -> - chars_decode2(Bytes,CharInTab,NumBits,Len). - - -chars_decode2(Bytes,CharInTab,NumBits,Len) -> - chars_decode2(Bytes,CharInTab,NumBits,Len,[]). - -chars_decode2(Bytes,_CharInTab,_NumBits,0,Acc) -> - {lists:reverse(Acc),Bytes}; -chars_decode2(Bytes,{Min,Max,notab},NumBits,Len,Acc) when NumBits > 8 -> - {Char,Bytes2} = getbits(Bytes,NumBits), - Result = - if - Char < 256 -> Char; - true -> - list_to_tuple(binary_to_list(<<Char:32>>)) - end, - chars_decode2(Bytes2,{Min,Max,notab},NumBits,Len -1,[Result|Acc]); -chars_decode2(Bytes,{Min,Max,notab},NumBits,Len,Acc) -> - {Char,Bytes2} = getbits(Bytes,NumBits), - chars_decode2(Bytes2,{Min,Max,notab},NumBits,Len -1,[Char+Min|Acc]); - -%% BMPString and UniversalString with PermittedAlphabet is currently not supported -chars_decode2(Bytes,{Min,Max,CharInTab},NumBits,Len,Acc) -> - {Char,Bytes2} = getbits(Bytes,NumBits), - chars_decode2(Bytes2,{Min,Max,CharInTab},NumBits,Len -1,[element(Char+1,CharInTab)|Acc]). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_UTF8String(Val) -> CompleteList -%% Val -> <<utf8encoded binary>> -%% CompleteList -> [apropriate codes and values for driver complete] -%% -encode_UTF8String(Val) when is_binary(Val) -> - [encode_length(undefined,size(Val)), - octets_to_complete(size(Val),Val)]; -encode_UTF8String(Val) -> - encode_UTF8String(list_to_binary(Val)). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_UTF8String(Bytes) -> {Utf8Binary,RemainingBytes} -%% Utf8Binary -> <<utf8 encoded binary>> -%% RemainingBytes -> <<buffer>> -decode_UTF8String(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {_Bin,_Bytes3} = getoctets_as_bin(Bytes2,Len). - - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_object_identifier(Val) -> CompleteList -%% encode_object_identifier({Name,Val}) -> CompleteList -%% Val -> {Int1,Int2,...,IntN} % N >= 2 -%% Name -> atom() -%% Int1 -> integer(0..2) -%% Int2 -> integer(0..39) when Int1 (0..1) else integer() -%% Int3-N -> integer() -%% CompleteList -> [{bits,8,Val}|{octets,Ol}|align|...] -%% -encode_object_identifier({Name,Val}) when is_atom(Name) -> - encode_object_identifier(Val); -encode_object_identifier(Val) -> - OctetList = e_object_identifier(Val), - Octets = list_to_binary(OctetList), - [encode_length(undefined,size(Octets)), - octets_to_complete(size(Octets),Octets)]. - -e_object_identifier({'OBJECT IDENTIFIER',V}) -> - e_object_identifier(V); -e_object_identifier({Cname,V}) when is_atom(Cname),is_tuple(V) -> - e_object_identifier(tuple_to_list(V)); -e_object_identifier({Cname,V}) when is_atom(Cname),is_list(V) -> - e_object_identifier(V); -e_object_identifier(V) when is_tuple(V) -> - e_object_identifier(tuple_to_list(V)); - -%% E1 = 0|1|2 and (E2 < 40 when E1 = 0|1) -e_object_identifier([E1,E2|Tail]) when E1 >= 0, E1 < 2, E2 < 40 ; E1==2 -> - Head = 40*E1 + E2, % weird - e_object_elements([Head|Tail],[]); -e_object_identifier(Oid=[_,_|_Tail]) -> - exit({error,{asn1,{'illegal_value',Oid}}}). - -e_object_elements([],Acc) -> - lists:reverse(Acc); -e_object_elements([H|T],Acc) -> - e_object_elements(T,[e_object_element(H)|Acc]). - -e_object_element(Num) when Num < 128 -> - [Num]; -e_object_element(Num) -> - [e_o_e(Num bsr 7)|[Num band 2#1111111]]. -e_o_e(Num) when Num < 128 -> - Num bor 2#10000000; -e_o_e(Num) -> - [e_o_e(Num bsr 7)|[(Num band 2#1111111) bor 2#10000000]]. - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_object_identifier(Bytes) -> {ObjId,RemainingBytes} -%% ObjId -> {integer(),integer(),...} % at least 2 integers -%% RemainingBytes -> [integer()] when integer() (0..255) -decode_object_identifier(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {Octs,Bytes3} = getoctets_as_list(Bytes2,Len), - [First|Rest] = dec_subidentifiers(Octs,0,[]), - Idlist = if - First < 40 -> - [0,First|Rest]; - First < 80 -> - [1,First - 40|Rest]; - true -> - [2,First - 80|Rest] - end, - {list_to_tuple(Idlist),Bytes3}. - -dec_subidentifiers([H|T],Av,Al) when H >=16#80 -> - dec_subidentifiers(T,(Av bsl 7) + (H band 16#7F),Al); -dec_subidentifiers([H|T],Av,Al) -> - dec_subidentifiers(T,0,[(Av bsl 7) + H |Al]); -dec_subidentifiers([],_Av,Al) -> - lists:reverse(Al). - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_relative_oid(Val) -> CompleteList -%% encode_relative_oid({Name,Val}) -> CompleteList -encode_relative_oid({Name,Val}) when is_atom(Name) -> - encode_relative_oid(Val); -encode_relative_oid(Val) when is_tuple(Val) -> - encode_relative_oid(tuple_to_list(Val)); -encode_relative_oid(Val) when is_list(Val) -> - Octets = list_to_binary([e_object_element(X)||X <- Val]), - [encode_length(undefined,size(Octets)), - octets_to_complete(size(Octets),Octets)]. - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_relative_oid(Val) -> CompleteList -%% decode_relative_oid({Name,Val}) -> CompleteList -decode_relative_oid(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {Octs,Bytes3} = getoctets_as_list(Bytes2,Len), - ObjVals = dec_subidentifiers(Octs,0,[]), - {list_to_tuple(ObjVals),Bytes3}. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_real(Val) -> CompleteList -%% encode_real({Name,Val}) -> CompleteList -encode_real({Name,Val}) when is_atom(Name) -> - encode_real(Val); -encode_real(Real) -> - {EncVal,Len} = ?RT_COMMON:encode_real([],Real), - [encode_length(undefined,Len),octets_to_complete(size(EncVal),EncVal)]. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_real(Val) -> {REALvalue,Rest} -%% decode_real({Name,Val}) -> {REALvalue,Rest} -decode_real(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {RealVal,Rest,Len} = ?RT_COMMON:decode_real(Bytes2,Len), - {RealVal,Rest}. - - -get_constraint([{Key,V}],Key) -> - V; -get_constraint([],_) -> - no; -get_constraint(C,Key) -> - case lists:keysearch(Key,1,C) of - false -> - no; - {value,{_,V}} -> - V - end. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% complete(InList) -> ByteList -%% Takes a coded list with bits and bytes and converts it to a list of bytes -%% Should be applied as the last step at encode of a complete ASN.1 type -%% - --ifdef(nodriver). - -complete(L) -> - erlang_complete(L). - --else. - -%% asn1-1.7 -complete(L) -> - case asn1rt_nif:encode_per_complete(L) of - {error, Reason} -> handle_error(Reason, L); - Else when is_binary(Else) -> Else - end. - -handle_error([],_)-> - exit({error,{asn1,{"memory allocation problem in driver"}}}); -handle_error($1,L) -> % error in complete in driver - exit({error,{asn1,L}}); -handle_error(ErrL,L) -> - exit({error,{asn1,ErrL,L}}). - --endif. - - -octets_to_complete(Len,Val) when Len < 256 -> - [20,Len,Val]; -octets_to_complete(Len,Val) -> - [21,<<Len:16>>,Val]. - -octets_unused_to_complete(Unused,Len,Val) when Len < 256 -> - [30,Unused,Len,Val]; -octets_unused_to_complete(Unused,Len,Val) -> - [31,Unused,<<Len:16>>,Val]. diff --git a/lib/asn1/src/asn1rt_uper_bin.erl b/lib/asn1/src/asn1rt_uper_bin.erl deleted file mode 100644 index fc65d80245..0000000000 --- a/lib/asn1/src/asn1rt_uper_bin.erl +++ /dev/null @@ -1,1487 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2008-2010. All Rights Reserved. -%% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% -%% --module(asn1rt_uper_bin). - -%% encoding / decoding of PER unaligned - --include("asn1_records.hrl"). - -%%-compile(export_all). - --export([decode_fragmented/3]). --export([setext/1, fixoptionals/3, - fixextensions/2, - skipextensions/3, getbit/1, getchoice/3 ]). --export([set_choice/3, encode_integer/2, encode_integer/3]). --export([encode_small_number/1, encode_boolean/1, - encode_length/2, - encode_small_length/1, - decode_compact_bit_string/3]). --export([encode_bit_string/3, decode_bit_string/3 ]). --export([encode_octet_string/2, - encode_relative_oid/1, decode_relative_oid/1, - encode_object_identifier/1, decode_object_identifier/1, - encode_real/1, decode_real/1, - complete/1, complete_NFP/1]). - - - -export([encode_open_type/2, decode_open_type/2]). - - -export([encode_UniversalString/2, decode_UniversalString/2, - encode_PrintableString/2, decode_PrintableString/2, - encode_GeneralString/2, decode_GeneralString/2, - encode_GraphicString/2, decode_GraphicString/2, - encode_TeletexString/2, decode_TeletexString/2, - encode_VideotexString/2, decode_VideotexString/2, - encode_VisibleString/2, decode_VisibleString/2, - encode_UTF8String/1, decode_UTF8String/1, - encode_BMPString/2, decode_BMPString/2, - encode_IA5String/2, decode_IA5String/2, - encode_NumericString/2, decode_NumericString/2, - encode_ObjectDescriptor/2, decode_ObjectDescriptor/1 - ]). - --define('16K',16384). --define('32K',32768). --define('64K',65536). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% setext(true|false) -> CompleteList -%% - -setext(false) -> - <<0:1>>; -setext(true) -> - <<1:1>>. - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% This is the new fixoptionals/3 which is used by the new generates -%% -fixoptionals(OptList,OptLength,Val) when is_tuple(Val) -> - Bits = fixoptionals(OptList,Val,0), - {Val,<<Bits:OptLength>>}; - -fixoptionals([],_Val,Acc) -> - %% Optbits - Acc; -fixoptionals([{Pos,DefVal}|Ot],Val,Acc) -> - case element(Pos,Val) of - asn1_DEFAULT -> fixoptionals(Ot,Val,Acc bsl 1); - DefVal -> fixoptionals(Ot,Val,Acc bsl 1); - _ -> fixoptionals(Ot,Val,(Acc bsl 1) + 1) - end; -fixoptionals([Pos|Ot],Val,Acc) -> - case element(Pos,Val) of - asn1_NOVALUE -> fixoptionals(Ot,Val,Acc bsl 1); - asn1_DEFAULT -> fixoptionals(Ot,Val,Acc bsl 1); - _ -> fixoptionals(Ot,Val,(Acc bsl 1) + 1) - end. - - -fixextensions({ext,ExtPos,ExtNum},Val) -> - case fixextensions(ExtPos,ExtNum+ExtPos,Val,0) of - 0 -> []; - ExtBits -> - [encode_small_length(ExtNum),<<ExtBits:ExtNum>>] - end. - -fixextensions(Pos,MaxPos,_,Acc) when Pos >= MaxPos -> - Acc; -fixextensions(Pos,ExtPos,Val,Acc) -> - Bit = case catch(element(Pos+1,Val)) of - asn1_NOVALUE -> - 0; - asn1_NOEXTVALUE -> - 0; - {'EXIT',_} -> - 0; - _ -> - 1 - end, - fixextensions(Pos+1,ExtPos,Val,(Acc bsl 1)+Bit). - -skipextensions(Bytes,Nr,ExtensionBitstr) when is_bitstring(ExtensionBitstr) -> - Prev = Nr - 1, - case ExtensionBitstr of - <<_:Prev,1:1,_/bitstring>> -> - {_,Bytes2} = decode_open_type(Bytes,[]), - skipextensions(Bytes2, Nr+1, ExtensionBitstr); - <<_:Prev,0:1,_/bitstring>> -> - skipextensions(Bytes, Nr+1, ExtensionBitstr); - _ -> - Bytes - 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}). - - -%% getbits_as_binary(Num,Bytes) -> {{Unused,BinBits},RestBytes}, -%% Num = integer(), -%% Bytes = list() | tuple(), -%% Unused = integer(), -%% BinBits = binary(), -%% RestBytes = tuple() -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}. - - -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}. - -%% Pick the first Num octets. -%% Returns octets as a binary -getoctets_as_bin(Bin,Num) when is_bitstring(Bin) -> - <<Octets:Num/binary,RestBin/bitstring>> = Bin, - {Octets,RestBin}. - -%% same as above but returns octets as a List -getoctets_as_list(Buffer,Num) -> - {Bin,Buffer2} = getoctets_as_bin(Buffer,Num), - {binary_to_list(Bin),Buffer2}. -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% set_choice(Alt,Choices,Altnum) -> ListofBitSettings -%% Alt = atom() -%% Altnum = integer() | {integer(),integer()}% number of alternatives -%% Choices = [atom()] | {[atom()],[atom()]} -%% When Choices is a tuple the first list is the Rootset and the -%% second is the Extensions and then Altnum must also be a tuple with the -%% lengths of the 2 lists -%% -set_choice(Alt,{L1,L2},{Len1,_Len2}) -> - case set_choice_tag(Alt,L1) of - N when is_integer(N), Len1 > 1 -> - [<<0:1>>, % the value is in the root set - encode_integer([{'ValueRange',{0,Len1-1}}],N)]; - N when is_integer(N) -> - <<0:1>>; % no encoding if only 0 or 1 alternative - false -> - [<<1:1>>, % extension value - case set_choice_tag(Alt,L2) of - N2 when is_integer(N2) -> - encode_small_number(N2); - false -> - unknown_choice_alt - end] - end; -set_choice(Alt,L,Len) -> - case set_choice_tag(Alt,L) of - N when is_integer(N), Len > 1 -> - encode_integer([{'ValueRange',{0,Len-1}}],N); - N when is_integer(N) -> - []; % no encoding if only 0 or 1 alternative - false -> - [unknown_choice_alt] - end. - -set_choice_tag(Alt,Choices) -> - set_choice_tag(Alt,Choices,0). - -set_choice_tag(Alt,[Alt|_Rest],Tag) -> - Tag; -set_choice_tag(Alt,[_H|Rest],Tag) -> - set_choice_tag(Alt,Rest,Tag+1); -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 {Used, Bin}. -%% C is the constrained length. -%% If the buffer is not aligned, this function does that. -decode_fragmented_bits(Buffer,C) -> - decode_fragmented_bits(Buffer,C,[]). -decode_fragmented_bits(<<3:2,Len:6,BitStr/bitstring>>,C,Acc) -> -%% {Value,Bin2} = split_binary(Bin, Len * ?'16K'), - FragLen = (Len*?'16K') div 8, - <<Value:FragLen/binary,BitStr2/bitstring>> = BitStr, - decode_fragmented_bits(BitStr2,C,[Value|Acc]); -decode_fragmented_bits(<<0:1,0:7,BitStr/bitstring>>,C,Acc) -> - BinBits = list_to_binary(lists:reverse(Acc)), - case C of - Int when is_integer(Int),C == size(BinBits) -> - {BinBits,BitStr}; - Int when is_integer(Int) -> - exit({error,{asn1,{illegal_value,C,BinBits}}}) - end; -decode_fragmented_bits(<<0:1,Len:7,BitStr/bitstring>>,C,Acc) -> - <<Val:Len/bitstring,Rest/bitstring>> = BitStr, -%% <<Value:Len/binary-unit:1,Bin2/binary>> = Bin, - ResBitStr = list_to_bitstring(lists:reverse([Val|Acc])), - case C of - Int when is_integer(Int),C == bit_size(ResBitStr) -> - {ResBitStr,Rest}; - Int when is_integer(Int) -> - exit({error,{asn1,{illegal_value,C,ResBitStr}}}) - end. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_open_type(Constraint, Value) -> CompleteList -%% Value = list of bytes of an already encoded value (the list must be flat) -%% | binary -%% Contraint = not used in this version -%% -encode_open_type(C, Val) when is_list(Val) -> - encode_open_type(C, list_to_binary(Val)); -encode_open_type(_C, Val) when is_binary(Val) -> - [encode_length(undefined,size(Val)),Val]. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_open_type(Buffer,Constraint) -> Value -%% Constraint is not used in this version -%% Buffer = [byte] with PER encoded data -%% Value = [byte] with decoded data (which must be decoded again as some type) -%% -decode_open_type(Bytes, _C) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - getoctets_as_bin(Bytes2,Len). - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_integer(Constraint,Value,NamedNumberList) -> CompleteList -%% encode_integer(Constraint,Value) -> CompleteList -%% encode_integer(Constraint,{Name,Value}) -> CompleteList -%% -%% -encode_integer(C,V,NamedNumberList) when is_atom(V) -> - case lists:keysearch(V,1,NamedNumberList) of - {value,{_,NewV}} -> - encode_integer(C,NewV); - _ -> - exit({error,{asn1,{namednumber,V}}}) - end; -encode_integer(C,V,_NamedNumberList) when is_integer(V) -> - encode_integer(C,V); -encode_integer(C,{Name,V},NamedNumberList) when is_atom(Name) -> - encode_integer(C,V,NamedNumberList). - -encode_integer(C,{Name,Val}) when is_atom(Name) -> - encode_integer(C,Val); - -encode_integer([{Rc,_Ec}],Val) when is_tuple(Rc) -> % XXX when is this invoked? First argument most often a list,...Ok this is the extension case...but it doesn't work. - case (catch encode_integer([Rc],Val)) of - {'EXIT',{error,{asn1,_}}} -> - [<<1:1>>,encode_unconstrained_number(Val)]; - Encoded -> - [<<0:1>>,Encoded] - end; -encode_integer(C,Val ) when is_list(C) -> - case get_constraint(C,'SingleValue') of - no -> - encode_integer1(C,Val); - V when is_integer(V),V == Val -> - []; % a type restricted to a single value encodes to nothing - V when is_list(V) -> - case lists:member(Val,V) of - true -> - encode_integer1(C,Val); - _ -> - exit({error,{asn1,{illegal_value,Val}}}) - end; - _ -> - exit({error,{asn1,{illegal_value,Val}}}) - end. - -encode_integer1(C, Val) -> - case VR = get_constraint(C,'ValueRange') of - no -> - encode_unconstrained_number(Val); - {Lb,'MAX'} -> - encode_semi_constrained_number(Lb,Val); - %% positive with range - {Lb,Ub} when Val >= Lb, - Ub >= Val -> - encode_constrained_number(VR,Val); - _ -> - exit({error,{asn1,{illegal_value,VR,Val}}}) - end. - -%% X.691:10.6 Encoding of a normally small non-negative whole number -%% Use this for encoding of CHOICE index if there is an extension marker in -%% the CHOICE -encode_small_number({Name,Val}) when is_atom(Name) -> - encode_small_number(Val); -encode_small_number(Val) when Val =< 63 -> - <<Val:7>>; -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 -%% might be an optimization encode_semi_constrained_number(0,Val) -> -encode_semi_constrained_number(C,{Name,Val}) when is_atom(Name) -> - encode_semi_constrained_number(C,Val); -encode_semi_constrained_number({Lb,'MAX'},Val) -> - encode_semi_constrained_number(Lb,Val); -encode_semi_constrained_number(Lb,Val) -> - %% encoding in minimum no of octets preceeded by a length - Val2 = Val - Lb, -%% NumBits = num_bits(Val2), - Bin = eint_bin_positive(Val2), - Size = size(Bin), - if - Size < 128 -> - [<<Size>>,Bin]; % equiv with encode_length(undefined,Len) but faster - Size < 16384 -> - [<<2:2,Size:14>>,Bin]; - true -> - [encode_length(undefined,Size),Bin] - end. - -decode_semi_constrained_number(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {V,Bytes3} = getoctets(Bytes2,Len), - {V,Bytes3}. - -encode_constrained_number(Range,{Name,Val}) when is_atom(Name) -> - encode_constrained_number(Range,Val); -encode_constrained_number({Lb,Ub},Val) when Val >= Lb, Ub >= Val -> - Range = Ub - Lb + 1, - Val2 = Val - Lb, - NumBits = num_bits(Range), - <<Val2:NumBits>>; -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 -> - Oct = eint_bin_2Cs(Val), - Len = size(Oct), - if - Len < 128 -> - [<<Len>>,Oct]; % equiv with encode_length(undefined,Len) but faster - Len < 16384 -> - [<<2:2,Len:14>>,Oct]; - true -> - [encode_length(undefined,Len),<<Len:16>>,Oct] - end; -encode_unconstrained_number(Val) -> % negative - Oct = enint(Val,[]), - Len = size(Oct), - if - Len < 128 -> - [<<Len>>,Oct]; % equiv with encode_length(undefined,Len) but faster - Len < 16384 -> - [<<2:2,Len:14>>,Oct]; - true -> - [encode_length(undefined,Len),Oct] - end. - - -eint_bin_2Cs(Int) -> - case eint_bin_positive(Int) of - Bin = <<B,_/binary>> when B > 16#7f -> - <<0,Bin/binary>>; - Bin -> Bin - end. - -%% returns the integer as a binary -eint_bin_positive(Val) when Val < 16#100 -> - <<Val>>; -eint_bin_positive(Val) when Val < 16#10000 -> - <<Val:16>>; -eint_bin_positive(Val) when Val < 16#1000000 -> - <<Val:24>>; -eint_bin_positive(Val) when Val < 16#100000000 -> - <<Val:32>>; -eint_bin_positive(Val) -> - list_to_binary([eint_bin_positive2(Val bsr 32)|<<Val:32>>]). -eint_bin_positive2(Val) when Val < 16#100 -> - <<Val>>; -eint_bin_positive2(Val) when Val < 16#10000 -> - <<Val:16>>; -eint_bin_positive2(Val) when Val < 16#1000000 -> - <<Val:24>>; -eint_bin_positive2(Val) when Val < 16#100000000 -> - <<Val:32>>; -eint_bin_positive2(Val) -> - [eint_bin_positive2(Val bsr 32)|<<Val:32>>]. - - - - -enint(-1, [B1|T]) when B1 > 127 -> - list_to_binary([B1|T]); -enint(N, Acc) -> - enint(N bsr 8, [N band 16#ff|Acc]). - - -%% X.691:10.9 Encoding of a length determinant -%%encode_small_length(undefined,Len) -> % null means no UpperBound -%% encode_small_number(Len). - -%% X.691:10.9.3.5 -%% X.691:10.9.3.7 -encode_length(undefined,Len) -> % un-constrained - if - Len < 128 -> - <<Len>>; - Len < 16384 -> - <<2:2,Len:14>>; - true -> % should be able to endode length >= 16384 - error({error,{asn1,{encode_length,{nyi,above_16k}}}}) - end; - -encode_length({0,'MAX'},Len) -> - encode_length(undefined,Len); -encode_length(Vr={Lb,Ub},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(undefined,Len); -encode_length({Vr={Lb,Ub},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) -> - []. - -%% X.691 10.9.3.4 (only used for length of bitmap that prefixes extension -%% additions in a sequence or set -encode_small_length(Len) when Len =< 64 -> - <<(Len-1):7>>; -encode_small_length(Len) -> - [<<1:1>>,encode_length(undefined,Len)]. - - -%% un-constrained -decode_length(<<0:1,Oct:7,Rest/bitstring>>,undefined) -> - {Oct,Rest}; -decode_length(<<2:2,Val:14,Rest/bitstring>>,undefined) -> - {Val,Rest}; -decode_length(<<3:2,_:14,_Rest/bitstring>>,undefined) -> - exit({error,{asn1,{decode_length,{nyi,above_16k}}}}); - -decode_length(Buffer,{Lb,Ub}) when Ub =< 65535 ,Lb >= 0 -> % constrained - decode_constrained_number(Buffer,{Lb,Ub}); -decode_length(Buffer,{Lb,_}) when is_integer(Lb), Lb >= 0 -> % Ub > 65535 - decode_length(Buffer,undefined); -decode_length(Buffer,{VR={_Lb,_Ub},Ext}) when is_list(Ext) -> - {0,Buffer2} = getbit(Buffer), - decode_length(Buffer2, VR); - - -%When does this case occur with {_,_Lb,Ub} ?? -% X.691:10.9.3.5 -decode_length(Bin,{_,_Lb,_Ub}) -> %when Len =< 127 -> % Unconstrained or large Ub NOTE! this case does not cover case when Ub > 65535 - case Bin of - <<0:1,Val:7,Rest/bitstring>> -> - {Val,Rest}; - <<2:2,Val:14,Rest/bitstring>> -> - {Val,Rest}; - <<3:2,_:14,_Rest/bitstring>> -> - exit({error,{asn1,{decode_length,{nyi,length_above_64K}}}}) - end; -decode_length(Buffer,SingleValue) when is_integer(SingleValue) -> - {SingleValue,Buffer}. - - - % X.691:11 -encode_boolean(true) -> - <<1:1>>; -encode_boolean(false) -> - <<0:1>>; -encode_boolean({Name,Val}) when is_atom(Name) -> - encode_boolean(Val); -encode_boolean(Val) -> - exit({error,{asn1,{encode_boolean,Val}}}). - - -%%============================================================================ -%%============================================================================ -%% Bitstring value, ITU_T X.690 Chapter 8.5 -%%============================================================================ -%%============================================================================ - -%%============================================================================ -%% encode bitstring value -%%============================================================================ - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% bitstring NamedBitList -%% Val can be of: -%% - [identifiers] where only named identifers are set to one, -%% the Constraint must then have some information of the -%% bitlength. -%% - [list of ones and zeroes] all bits -%% - integer value representing the bitlist -%% C is constraint Len, only valid when identifiers - - -%% when the value is a list of {Unused,BinBits}, where -%% Unused = integer(), -%% BinBits = binary(). - -encode_bit_string(C,Bin={Unused,BinBits},NamedBitList) when is_integer(Unused), - is_binary(BinBits) -> - encode_bin_bit_string(get_constraint(C,'SizeConstraint'),Bin,NamedBitList); - -encode_bit_string(C, BitListVal, NamedBitList) -> - encode_bit_string1(get_constraint(C,'SizeConstraint'), BitListVal, NamedBitList). -%% when the value is a list of named bits -encode_bit_string1(C, LoNB=[FirstVal | _RestVal], NamedBitList) when is_atom(FirstVal) -> - ToSetPos = get_all_bitposes(LoNB, NamedBitList, []), - BitList = make_and_set_list(ToSetPos,0), - encode_bit_string1(C,BitList,NamedBitList); - -encode_bit_string1(C, BL=[{bit,_No} | _RestVal], NamedBitList) -> - ToSetPos = get_all_bitposes(BL, NamedBitList, []), - BitList = make_and_set_list(ToSetPos,0), - encode_bit_string1(C,BitList,NamedBitList); -%% when the value is a list of ones and zeroes -encode_bit_string1(Int, BitListValue, _) - when is_list(BitListValue),is_integer(Int) -> - %% The type is constrained by a single value size constraint - bit_list2bitstr(Int,BitListValue); -encode_bit_string1(no, BitListValue,[]) - when is_list(BitListValue) -> - Len = length(BitListValue), - [encode_length(undefined,Len),bit_list2bitstr(Len,BitListValue)]; -encode_bit_string1(C, BitListValue,[]) - when is_list(BitListValue) -> - Len = length(BitListValue), - [encode_length(C,Len),bit_list2bitstr(Len,BitListValue)]; -encode_bit_string1(no, BitListValue,_NamedBitList) - when is_list(BitListValue) -> - %% this case with an unconstrained BIT STRING can be made more efficient - %% if the complete driver can take a special code so the length field - %% is encoded there. - NewBitLVal = lists:reverse(lists:dropwhile(fun(0)->true;(1)->false end, - lists:reverse(BitListValue))), - Len = length(NewBitLVal), - [encode_length(undefined,Len),bit_list2bitstr(Len,NewBitLVal)]; -encode_bit_string1(C,BitListValue,_NamedBitList) - when is_list(BitListValue) ->% C = {_,'MAX'} - NewBitStr = bitstr_trailing_zeros(BitListValue,C), - [encode_length(C,bit_size(NewBitStr)),NewBitStr]; - - -%% when the value is an integer -encode_bit_string1(C, IntegerVal, NamedBitList) when is_integer(IntegerVal)-> - BitList = int_to_bitlist(IntegerVal), - encode_bit_string1(C,BitList,NamedBitList); - -%% when the value is a tuple -encode_bit_string1(C,{Name,Val}, NamedBitList) when is_atom(Name) -> - encode_bit_string1(C,Val,NamedBitList). - -bit_list2bitstr(Len,BitListValue) -> - case length(BitListValue) of - Len -> - << <<B:1>> ||B <- BitListValue>>; - L when L > Len -> % truncate - << << <<B:1>> ||B <- BitListValue>> :Len/bitstring>>; - L -> % Len > L -> pad - << << <<B:1>> ||B <- BitListValue>>/bitstring ,0:(Len-L)>> - end. - -adjust_trailing_zeros(Len,Bin) when Len == bit_size(Bin) -> - Bin; -adjust_trailing_zeros(Len,Bin) when Len > bit_size(Bin) -> - <<Bin/bitstring,0:(Len-bit_size(Bin))>>; -adjust_trailing_zeros(Len,Bin) -> - <<Bin:Len/bitstring>>. - -bitstr_trailing_zeros(BitList,C) when is_integer(C) -> - bitstr_trailing_zeros1(BitList,C,C); -bitstr_trailing_zeros(BitList,{Lb,Ub}) when is_integer(Lb) -> - bitstr_trailing_zeros1(BitList,Lb,Ub); -bitstr_trailing_zeros(BitList,{{Lb,Ub},_}) when is_integer(Lb) -> - bitstr_trailing_zeros1(BitList,Lb,Ub); -bitstr_trailing_zeros(BitList,_) -> - bit_list2bitstr(length(BitList),BitList). - -bitstr_trailing_zeros1(BitList,Lb,Ub) -> - case length(BitList) of - Lb -> bit_list2bitstr(Lb,BitList); - B when B<Lb -> bit_list2bitstr(Lb,BitList); - D -> F = fun(L,LB,LB,_,_)->bit_list2bitstr(LB,lists:reverse(L)); - ([0|R],L1,LB,UB,Fun)->Fun(R,L1-1,LB,UB,Fun); - (L,L1,_,UB,_)when L1 =< UB -> - bit_list2bitstr(L1,lists:reverse(L)); - (_,_L1,_,_,_) ->exit({error,{list_length_BIT_STRING, - BitList}}) end, - F(lists:reverse(BitList),D,Lb,Ub,F) - end. - -%% encode_bin_bit_string/3, when value is a tuple of Unused and BinBits. -%% Unused = integer(),i.e. number unused bits in least sign. byte of -%% BinBits = binary(). -encode_bin_bit_string(C,{_,BinBits},_NamedBitList) - when is_integer(C),C=<16 -> - adjust_trailing_zeros(C,BinBits); -encode_bin_bit_string(C,{_Unused,BinBits},_NamedBitList) - when is_integer(C) -> - adjust_trailing_zeros(C,BinBits); -encode_bin_bit_string(C,UnusedAndBin={_,_},NamedBitList) -> - %% removes all trailing bits if NamedBitList is not empty - BitStr = remove_trailing_bin(NamedBitList,UnusedAndBin), - case C of - {Lb,Ub} when is_integer(Lb),is_integer(Ub) -> - [encode_length({Lb,Ub},bit_size(BitStr)),BitStr]; - no -> - [encode_length(undefined,bit_size(BitStr)),BitStr]; - Sc -> - [encode_length(Sc,bit_size(BitStr)),BitStr] - end. - - -remove_trailing_bin([], {Unused,Bin}) -> - BS = bit_size(Bin)-Unused, - <<BitStr:BS/bitstring,_:Unused>> = Bin, - BitStr; -remove_trailing_bin(_NamedNumberList,{_Unused,<<>>}) -> - <<>>; -remove_trailing_bin(NamedNumberList, {_Unused,Bin}) -> - Size = size(Bin)-1, - <<Bfront:Size/binary, LastByte:8>> = Bin, - - %% clear the Unused bits to be sure - Unused1 = trailingZeroesInNibble(LastByte band 15), - Unused2 = - case Unused1 of - 4 -> - 4 + trailingZeroesInNibble(LastByte bsr 4); - _ -> Unused1 - end, - case Unused2 of - 8 -> - remove_trailing_bin(NamedNumberList,{0,Bfront}); - _ -> - BS = bit_size(Bin) - Unused2, - <<BitStr:BS/bitstring,_:Unused2>> = Bin, - BitStr - end. - -trailingZeroesInNibble(0) -> - 4; -trailingZeroesInNibble(1) -> - 0; -trailingZeroesInNibble(2) -> - 1; -trailingZeroesInNibble(3) -> - 0; -trailingZeroesInNibble(4) -> - 2; -trailingZeroesInNibble(5) -> - 0; -trailingZeroesInNibble(6) -> - 1; -trailingZeroesInNibble(7) -> - 0; -trailingZeroesInNibble(8) -> - 3; -trailingZeroesInNibble(9) -> - 0; -trailingZeroesInNibble(10) -> - 1; -trailingZeroesInNibble(11) -> - 0; -trailingZeroesInNibble(12) -> %#1100 - 2; -trailingZeroesInNibble(13) -> - 0; -trailingZeroesInNibble(14) -> - 1; -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 - compact_bit_string(Buffer,V,NamedNumberList); - V when is_integer(V) -> % V > 65536 => fragmented value - {Bin,Buffer2} = decode_fragmented_bits(Buffer,V), - PadLen = (8 - (bit_size(Bin) rem 8)) rem 8, - {{PadLen,<<Bin/bitstring,0:PadLen>>},Buffer2}; -%% {0,_} -> {{0,Bin},Buffer2}; -%% {U,_} -> {{8-U,Bin},Buffer2} - {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}), - compact_bit_string(Bytes2,Len,NamedNumberList); - no -> - %% This case may demand decoding of fragmented length/value - {Len,Bytes2} = decode_length(Buffer,undefined), - compact_bit_string(Bytes2,Len,NamedNumberList); - Sc -> - {Len,Bytes2} = decode_length(Buffer,Sc), - compact_bit_string(Bytes2,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}), - bit_list_or_named(Bytes2,Len,NamedNumberList); - no -> - {Len,Bytes2} = decode_length(Buffer,undefined), - bit_list_or_named(Bytes2,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 -> - bit_list_or_named(Buffer,V,NamedNumberList); - V when is_integer(V) -> - {BinBits,_} = decode_fragmented_bits(Buffer,V), - bit_list_or_named(BinBits,V,NamedNumberList); - Sc -> % extension marker - {Len,Bytes2} = decode_length(Buffer,Sc), - bit_list_or_named(Bytes2,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:keysearch(Pos,2,Names) of - {value,{Name,_}} -> - bit_list_or_named1(Pos+1,Bt,Names,[Name|Acc]); - _ -> - bit_list_or_named1(Pos+1,Bt,Names,[{bit,Pos}|Acc]) - end; -bit_list_or_named1(_,[],_,Acc) -> - lists:reverse(Acc). - - - -%%%%%%%%%%%%%%% -%% - -int_to_bitlist(Int) when is_integer(Int), Int > 0 -> - [Int band 1 | int_to_bitlist(Int bsr 1)]; -int_to_bitlist(0) -> - []. - - -%%%%%%%%%%%%%%%%%% -%% get_all_bitposes([list of named bits to set], named_bit_db, []) -> -%% [sorted_list_of_bitpositions_to_set] - -get_all_bitposes([{bit,ValPos}|Rest], NamedBitList, Ack) -> - get_all_bitposes(Rest, NamedBitList, [ValPos | Ack ]); - -get_all_bitposes([Val | Rest], NamedBitList, Ack) -> - case lists:keysearch(Val, 1, NamedBitList) of - {value, {_ValName, ValPos}} -> - get_all_bitposes(Rest, NamedBitList, [ValPos | Ack]); - _ -> - exit({error,{asn1, {bitstring_namedbit, Val}}}) - end; -get_all_bitposes([], _NamedBitList, Ack) -> - lists:sort(Ack). - -%%%%%%%%%%%%%%%%%% -%% make_and_set_list([list of positions to set to 1])-> -%% returns list with all in SetPos set. -%% in positioning in list the first element is 0, the second 1 etc.., but -%% - -make_and_set_list([XPos|SetPos], XPos) -> - [1 | make_and_set_list(SetPos, XPos + 1)]; -make_and_set_list([Pos|SetPos], XPos) -> - [0 | make_and_set_list([Pos | SetPos], XPos + 1)]; -make_and_set_list([], _) -> - []. - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% X.691:16 -%% encode_octet_string(Constraint,Val) -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -encode_octet_string(C,{_Name,Val}) -> - encode_octet_string(C,Val); -encode_octet_string(C,Val) -> - case get_constraint(C,'SizeConstraint') of - 0 -> - <<>>; - 1 -> - list_to_binary(Val); - 2 -> - list_to_binary(Val); - {_,_}=VR -> - try - [encode_length(VR, length(Val)),list_to_binary(Val)] - catch - error:{error,{asn1,{encode_length,_}}} -> - 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; - no -> - try - [encode_length(undefined, length(Val)),list_to_binary(Val)] - catch - error:{error,{asn1,{encode_length,_}}} -> - encode_fragmented_octet_string(Val) - end - end. - -encode_fragmented_octet_string(Val) -> - Bin = list_to_binary(Val), - efos_1(Bin). - -efos_1(<<B:16#10000/binary,T/binary>>) -> - [<<3:2,4:6>>,B|efos_1(T)]; -efos_1(<<B:16#C000/binary,T/binary>>) -> - [<<3:2,3:6>>,B|efos_1(T)]; -efos_1(<<B:16#8000/binary,T/binary>>) -> - [<<3:2,2:6>>,B|efos_1(T)]; -efos_1(<<B:16#4000/binary,T/binary>>) -> - [<<3:2,1:6>>,B|efos_1(T)]; -efos_1(<<B/bitstring>>) -> - Len = byte_size(B), - [encode_length(undefined, Len),B]. - -decode_fragmented(SegSz0, Buf0, Unit) -> - SegSz = SegSz0 * Unit * ?'16K', - <<Res:SegSz/bitstring,Buf/bitstring>> = Buf0, - decode_fragmented_1(Buf, Unit, Res). - -decode_fragmented_1(<<0:1,N:7,Buf0/bitstring>>, Unit, Res) -> - Sz = N*Unit, - <<S:Sz/bitstring,Buf/bitstring>> = Buf0, - {<<Res/bitstring,S/bitstring>>,Buf}; -decode_fragmented_1(<<1:1,0:1,N:14,Buf0/bitstring>>, Unit, Res) -> - Sz = N*Unit, - <<S:Sz/bitstring,Buf/bitstring>> = Buf0, - {<<Res/bitstring,S/bitstring>>,Buf}; -decode_fragmented_1(<<1:1,1:1,SegSz0:6,Buf0/bitstring>>, Unit, Res0) -> - SegSz = SegSz0 * Unit * ?'16K', - <<Frag:SegSz/bitstring,Buf/bitstring>> = Buf0, - Res = <<Res0/bitstring,Frag/bitstring>>, - decode_fragmented_1(Buf, Unit, Res). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% Restricted char string types -%% (NumericString, PrintableString,VisibleString,IA5String,BMPString,UniversalString) -%% X.691:26 and X.680:34-36 -%%encode_restricted_string('BMPString',Constraints,Extension,Val) - - -encode_restricted_string({Name,Val}) when is_atom(Name) -> - encode_restricted_string(Val); - -encode_restricted_string(Val) when is_list(Val)-> - [encode_length(undefined,length(Val)),list_to_binary(Val)]. - -encode_known_multiplier_string(StringType,C,{Name,Val}) when is_atom(Name) -> - encode_known_multiplier_string(StringType,C,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 - 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]; - no -> - [encode_length(undefined,length(Val)),Result] - end. - -decode_restricted_string(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - getoctets_as_list(Bytes2,Len). - -decode_known_multiplier_string(Bytes,StringType,C,_Ext) -> - NumBits = get_NumBits(C,StringType), - case get_constraint(C,'SizeConstraint') of - Ub when is_integer(Ub), Ub*NumBits =< 16 -> - chars_decode(Bytes,NumBits,StringType,C,Ub); - Ub when is_integer(Ub),Ub =<65535 -> % fixed length - chars_decode(Bytes,NumBits,StringType,C,Ub); - 0 -> - {[],Bytes}; - Vl when is_list(Vl) -> - {Len,Bytes1} = decode_length(Bytes,{hd(Vl),lists:max(Vl)}), - chars_decode(Bytes1,NumBits,StringType,C,Len); - no -> - {Len,Bytes1} = decode_length(Bytes,undefined), - chars_decode(Bytes1,NumBits,StringType,C,Len); - {Lb,Ub}-> - {Len,Bytes1} = decode_length(Bytes,{Lb,Ub}), - chars_decode(Bytes1,NumBits,StringType,C,Len) - end. - - -encode_NumericString(C,Val) -> - encode_known_multiplier_string('NumericString',C,Val). -decode_NumericString(Bytes,C) -> - decode_known_multiplier_string(Bytes,'NumericString',C,false). - -encode_PrintableString(C,Val) -> - encode_known_multiplier_string('PrintableString',C,Val). -decode_PrintableString(Bytes,C) -> - decode_known_multiplier_string(Bytes,'PrintableString',C,false). - -encode_VisibleString(C,Val) -> % equivalent with ISO646String - encode_known_multiplier_string('VisibleString',C,Val). -decode_VisibleString(Bytes,C) -> - decode_known_multiplier_string(Bytes,'VisibleString',C,false). - -encode_IA5String(C,Val) -> - encode_known_multiplier_string('IA5String',C,Val). -decode_IA5String(Bytes,C) -> - decode_known_multiplier_string(Bytes,'IA5String',C,false). - -encode_BMPString(C,Val) -> - encode_known_multiplier_string('BMPString',C,Val). -decode_BMPString(Bytes,C) -> - decode_known_multiplier_string(Bytes,'BMPString',C,false). - -encode_UniversalString(C,Val) -> - encode_known_multiplier_string('UniversalString',C,Val). -decode_UniversalString(Bytes,C) -> - decode_known_multiplier_string(Bytes,'UniversalString',C,false). - - -%% end of known-multiplier strings for which PER visible constraints are -%% applied - -encode_GeneralString(_C,Val) -> - encode_restricted_string(Val). -decode_GeneralString(Bytes,_C) -> - decode_restricted_string(Bytes). - -encode_GraphicString(_C,Val) -> - encode_restricted_string(Val). -decode_GraphicString(Bytes,_C) -> - decode_restricted_string(Bytes). - -encode_ObjectDescriptor(_C,Val) -> - encode_restricted_string(Val). -decode_ObjectDescriptor(Bytes) -> - decode_restricted_string(Bytes). - -encode_TeletexString(_C,Val) -> % equivalent with T61String - encode_restricted_string(Val). -decode_TeletexString(Bytes,_C) -> - decode_restricted_string(Bytes). - -encode_VideotexString(_C,Val) -> - encode_restricted_string(Val). -decode_VideotexString(Bytes,_C) -> - decode_restricted_string(Bytes). - - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% getBMPChars(Bytes,Len) ->{BMPcharList,RemainingBytes} -%% -getBMPChars(Bytes,1) -> - {O1,Bytes2} = getbits(Bytes,8), - {O2,Bytes3} = getbits(Bytes2,8), - if - O1 == 0 -> - {[O2],Bytes3}; - true -> - {[{0,0,O1,O2}],Bytes3} - end; -getBMPChars(Bytes,Len) -> - getBMPChars(Bytes,Len,[]). - -getBMPChars(Bytes,0,Acc) -> - {lists:reverse(Acc),Bytes}; -getBMPChars(Bytes,Len,Acc) -> - {Octs,Bytes1} = getoctets_as_list(Bytes,2), - case Octs of - [0,O2] -> - getBMPChars(Bytes1,Len-1,[O2|Acc]); - [O1,O2]-> - getBMPChars(Bytes1,Len-1,[{0,0,O1,O2}|Acc]) - end. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% chars_encode(C,StringType,Value) -> ValueList -%% -%% encodes chars according to the per rules taking the constraint PermittedAlphabet -%% 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 - {'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)}, - chars_encode2(Value,NumBits,CharOutTab) - end. - -chars_encode2([H|T],NumBits,{Min,Max,notab}) when H =< Max, H >= Min -> - %%[{bits,NumBits,H-Min}|chars_encode2(T,NumBits,{Min,Max,notab})]; - [<<(H-Min):NumBits>>|chars_encode2(T,NumBits,{Min,Max,notab})]; -chars_encode2([H|T],NumBits,{Min,Max,Tab}) when H =< Max, H >= Min -> -%% [{bits,NumBits,exit_if_false(H,element(H-Min+1,Tab))}|chars_encode2(T,NumBits,{Min,Max,Tab})]; - Ch = exit_if_false(H,element(H-Min+1,Tab)), - [<<Ch:NumBits>>|chars_encode2(T,NumBits,{Min,Max,Tab})]; -chars_encode2([{A,B,C,D}|T],NumBits,{Min,Max,notab}) -> - %% no value range check here (ought to be, but very expensive) -%% [{bits,NumBits,((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min}|chars_encode2(T,NumBits,{Min,Max,notab})]; - Ch = ((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min, - [<<Ch:NumBits>>|chars_encode2(T,NumBits,{Min,Max,notab})]; -chars_encode2([{A,B,C,D}|T],NumBits,{Min,Max,Tab}) -> - %% no value range check here (ought to be, but very expensive) -%% [{bits,NumBits,exit_if_false({A,B,C,D},element(((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min,Tab))}|chars_encode2(T,NumBits,{Min,Max,notab})]; - Ch = exit_if_false({A,B,C,D},element(((((((A bsl 8)+B) bsl 8)+C) bsl 8)+D)-Min,Tab)), - [<<Ch:NumBits>>|chars_encode2(T,NumBits,{Min,Max,notab})]; -chars_encode2([H|_T],_,{_,_,_}) -> - exit({error,{asn1,{illegal_char_value,H}}}); -chars_encode2([],_,_) -> - []. - -exit_if_false(V,false)-> - exit({error,{asn1,{"illegal value according to Permitted alphabet constraint",V}}}); -exit_if_false(_,V) ->V. - - -get_NumBits(C,StringType) -> - case get_constraint(C,'PermittedAlphabet') of - {'SingleValue',Sv} -> - charbits(length(Sv)); - no -> - case StringType of - 'IA5String' -> - charbits(128); % 16#00..16#7F - 'VisibleString' -> - charbits(95); % 16#20..16#7E - 'PrintableString' -> - charbits(74); % [$\s,$',$(,$),$+,$,,$-,$.,$/,"0123456789",$:,$=,$?,$A..$Z,$a..$z - 'NumericString' -> - charbits(11); % $ ,"0123456789" - 'UniversalString' -> - 32; - 'BMPString' -> - 16 - end - end. - -get_CharOutTab(C,StringType) -> - get_CharTab(C,StringType,out). - -get_CharInTab(C,StringType) -> - get_CharTab(C,StringType,in). - -get_CharTab(C,StringType,InOut) -> - case get_constraint(C,'PermittedAlphabet') of - {'SingleValue',Sv} -> - get_CharTab2(C,StringType,hd(Sv),lists:max(Sv),Sv,InOut); - no -> - case StringType of - 'IA5String' -> - {0,16#7F,notab}; - 'VisibleString' -> - get_CharTab2(C,StringType,16#20,16#7F,notab,InOut); - 'PrintableString' -> - Chars = lists:sort( - " '()+,-./0123456789:=?ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), - get_CharTab2(C,StringType,hd(Chars),lists:max(Chars),Chars,InOut); - 'NumericString' -> - get_CharTab2(C,StringType,16#20,$9," 0123456789",InOut); - 'UniversalString' -> - {0,16#FFFFFFFF,notab}; - 'BMPString' -> - {0,16#FFFF,notab} - end - end. - -get_CharTab2(C,StringType,Min,Max,Chars,InOut) -> - BitValMax = (1 bsl get_NumBits(C,StringType))-1, - if - Max =< BitValMax -> - {0,Max,notab}; - true -> - case InOut of - out -> - {Min,Max,create_char_tab(Min,Chars)}; - in -> - {Min,Max,list_to_tuple(Chars)} - end - end. - -create_char_tab(Min,L) -> - list_to_tuple(create_char_tab(Min,L,0)). -create_char_tab(Min,[Min|T],V) -> - [V|create_char_tab(Min+1,T,V+1)]; -create_char_tab(_Min,[],_V) -> - []; -create_char_tab(Min,L,V) -> - [false|create_char_tab(Min+1,L,V)]. - -%% See Table 20.3 in Dubuisson -charbits(NumOfChars) when NumOfChars =< 2 -> 1; -charbits(NumOfChars) when NumOfChars =< 4 -> 2; -charbits(NumOfChars) when NumOfChars =< 8 -> 3; -charbits(NumOfChars) when NumOfChars =< 16 -> 4; -charbits(NumOfChars) when NumOfChars =< 32 -> 5; -charbits(NumOfChars) when NumOfChars =< 64 -> 6; -charbits(NumOfChars) when NumOfChars =< 128 -> 7; -charbits(NumOfChars) when NumOfChars =< 256 -> 8; -charbits(NumOfChars) when NumOfChars =< 512 -> 9; -charbits(NumOfChars) when NumOfChars =< 1024 -> 10; -charbits(NumOfChars) when NumOfChars =< 2048 -> 11; -charbits(NumOfChars) when NumOfChars =< 4096 -> 12; -charbits(NumOfChars) when NumOfChars =< 8192 -> 13; -charbits(NumOfChars) when NumOfChars =< 16384 -> 14; -charbits(NumOfChars) when NumOfChars =< 32768 -> 15; -charbits(NumOfChars) when NumOfChars =< 65536 -> 16; -charbits(NumOfChars) when is_integer(NumOfChars) -> - 16 + charbits1(NumOfChars bsr 16). - -charbits1(0) -> - 0; -charbits1(NumOfChars) -> - 1 + charbits1(NumOfChars bsr 1). - - -chars_decode(Bytes,_,'BMPString',C,Len) -> - case get_constraint(C,'PermittedAlphabet') of - no -> - getBMPChars(Bytes,Len); - _ -> - exit({error,{asn1, - {'not implemented', - "BMPString with PermittedAlphabet constraint"}}}) - end; -chars_decode(Bytes,NumBits,StringType,C,Len) -> - CharInTab = get_CharInTab(C,StringType), - chars_decode2(Bytes,CharInTab,NumBits,Len). - - -chars_decode2(Bytes,CharInTab,NumBits,Len) -> - chars_decode2(Bytes,CharInTab,NumBits,Len,[]). - -chars_decode2(Bytes,_CharInTab,_NumBits,0,Acc) -> - {lists:reverse(Acc),Bytes}; -chars_decode2(Bytes,{Min,Max,notab},NumBits,Len,Acc) when NumBits > 8 -> - {Char,Bytes2} = getbits(Bytes,NumBits), - Result = - if - Char < 256 -> Char; - true -> - list_to_tuple(binary_to_list(<<Char:32>>)) - end, - chars_decode2(Bytes2,{Min,Max,notab},NumBits,Len -1,[Result|Acc]); -chars_decode2(Bytes,{Min,Max,notab},NumBits,Len,Acc) -> - {Char,Bytes2} = getbits(Bytes,NumBits), - chars_decode2(Bytes2,{Min,Max,notab},NumBits,Len -1,[Char+Min|Acc]); - -%% BMPString and UniversalString with PermittedAlphabet is currently not supported -chars_decode2(Bytes,{Min,Max,CharInTab},NumBits,Len,Acc) -> - {Char,Bytes2} = getbits(Bytes,NumBits), - chars_decode2(Bytes2,{Min,Max,CharInTab},NumBits,Len -1,[element(Char+1,CharInTab)|Acc]). - - -%% UTF8String -encode_UTF8String(Val) when is_binary(Val) -> - [encode_length(undefined,size(Val)),Val]; -encode_UTF8String(Val) -> - Bin = list_to_binary(Val), - encode_UTF8String(Bin). - -decode_UTF8String(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - getoctets_as_bin(Bytes2,Len). - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_object_identifier(Val) -> CompleteList -%% encode_object_identifier({Name,Val}) -> CompleteList -%% Val -> {Int1,Int2,...,IntN} % N >= 2 -%% Name -> atom() -%% Int1 -> integer(0..2) -%% Int2 -> integer(0..39) when Int1 (0..1) else integer() -%% Int3-N -> integer() -%% CompleteList -> [binary()|bitstring()|list()] -%% -encode_object_identifier({Name,Val}) when is_atom(Name) -> - encode_object_identifier(Val); -encode_object_identifier(Val) -> - OctetList = e_object_identifier(Val), - Octets = list_to_binary(OctetList), % performs a flatten at the same time - [encode_length(undefined,size(Octets)),Octets]. - -%% This code is copied from asn1_encode.erl (BER) and corrected and modified - -e_object_identifier({'OBJECT IDENTIFIER',V}) -> - e_object_identifier(V); -e_object_identifier({Cname,V}) when is_atom(Cname),is_tuple(V) -> - e_object_identifier(tuple_to_list(V)); -e_object_identifier({Cname,V}) when is_atom(Cname),is_list(V) -> - e_object_identifier(V); -e_object_identifier(V) when is_tuple(V) -> - e_object_identifier(tuple_to_list(V)); - -%% E1 = 0|1|2 and (E2 < 40 when E1 = 0|1) -e_object_identifier([E1,E2|Tail]) when E1 >= 0, E1 < 2, E2 < 40 ; E1==2 -> - Head = 40*E1 + E2, % weird - e_object_elements([Head|Tail],[]); -e_object_identifier(Oid=[_,_|_Tail]) -> - exit({error,{asn1,{'illegal_value',Oid}}}). - -e_object_elements([],Acc) -> - lists:reverse(Acc); -e_object_elements([H|T],Acc) -> - e_object_elements(T,[e_object_element(H)|Acc]). - -e_object_element(Num) when Num < 128 -> - [Num]; -e_object_element(Num) -> - [e_o_e(Num bsr 7)|[Num band 2#1111111]]. -e_o_e(Num) when Num < 128 -> - Num bor 2#10000000; -e_o_e(Num) -> - [e_o_e(Num bsr 7)|[(Num band 2#1111111) bor 2#10000000]]. - - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_object_identifier(Bytes) -> {ObjId,RemainingBytes} -%% ObjId -> {integer(),integer(),...} % at least 2 integers -%% RemainingBytes -> [integer()] when integer() (0..255) -decode_object_identifier(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {Octs,Bytes3} = getoctets_as_list(Bytes2,Len), - [First|Rest] = dec_subidentifiers(Octs,0,[]), - Idlist = if - First < 40 -> - [0,First|Rest]; - First < 80 -> - [1,First - 40|Rest]; - true -> - [2,First - 80|Rest] - end, - {list_to_tuple(Idlist),Bytes3}. - -dec_subidentifiers([H|T],Av,Al) when H >=16#80 -> - dec_subidentifiers(T,(Av bsl 7) + (H band 16#7F),Al); -dec_subidentifiers([H|T],Av,Al) -> - dec_subidentifiers(T,0,[(Av bsl 7) + H |Al]); -dec_subidentifiers([],_Av,Al) -> - lists:reverse(Al). - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_relative_oid(Val) -> CompleteList -%% encode_relative_oid({Name,Val}) -> CompleteList -encode_relative_oid({Name,Val}) when is_atom(Name) -> - encode_relative_oid(Val); -encode_relative_oid(Val) when is_tuple(Val) -> - encode_relative_oid(tuple_to_list(Val)); -encode_relative_oid(Val) when is_list(Val) -> - Octets = list_to_binary([e_object_element(X)||X <- Val]), - [encode_length(undefined,size(Octets)),Octets]. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_relative_oid(Val) -> CompleteList -%% decode_relative_oid({Name,Val}) -> CompleteList -decode_relative_oid(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {Octs,Bytes3} = getoctets_as_list(Bytes2,Len), - ObjVals = dec_subidentifiers(Octs,0,[]), - {list_to_tuple(ObjVals),Bytes3}. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% encode_real(Val) -> CompleteList -%% encode_real({Name,Val}) -> CompleteList -encode_real({Name,Val}) when is_atom(Name) -> - encode_real(Val); -encode_real(Real) -> - {EncVal,Len} = ?RT_COMMON:encode_real([],Real), - [encode_length(undefined,Len),EncVal]. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_real(Val) -> {REALvalue,Rest} -%% decode_real({Name,Val}) -> {REALvalue,Rest} -decode_real(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - <<Bytes3:Len/binary,Rest/bitstring>> = Bytes2, - {RealVal,Rest,Len} = ?RT_COMMON:decode_real(Bytes3,Len), - {RealVal,Rest}. - - -get_constraint([{Key,V}],Key) -> - V; -get_constraint([],_Key) -> - no; -get_constraint(C,Key) -> - case lists:keysearch(Key,1,C) of - false -> - no; - {value,{_,V}} -> - V - end. - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% complete(InList) -> ByteList -%% Takes a coded list with bits and bytes and converts it to a list of bytes -%% Should be applied as the last step at encode of a complete ASN.1 type -%% -complete(InList) when is_list(InList) -> - case complete1(InList) of - <<>> -> - <<0>>; - Res -> - case bit_size(Res) band 7 of - 0 -> Res; - Bits -> <<Res/bitstring,0:(8-Bits)>> - end - end; -complete(InList) when is_binary(InList) -> - InList; -complete(InList) when is_bitstring(InList) -> - PadLen = 8 - (bit_size(InList) band 7), - <<InList/bitstring,0:PadLen>>. - -complete1(L) when is_list(L) -> - list_to_bitstring(L). - -%% Special version of complete that does not align the completed message. -complete_NFP(InList) when is_list(InList) -> - list_to_bitstring(InList); -complete_NFP(InList) when is_bitstring(InList) -> - InList. - -%% unaligned helpers - -%% 10.5.6 NOTE: If "range" satisfies the inequality 2^m < "range" =< -%% 2^(m+1) then the number of bits = m + 1 - -num_bits(N) -> - num_bits(N,1,0). -num_bits(N,T,B) when N=<T->B; -num_bits(N,T,B) ->num_bits(N,T bsl 1, B+1). |