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Diffstat (limited to 'lib/asn1/src/asn1rt_check.erl')
| -rw-r--r-- | lib/asn1/src/asn1rt_check.erl | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/lib/asn1/src/asn1rt_check.erl b/lib/asn1/src/asn1rt_check.erl new file mode 100644 index 0000000000..59a74a7078 --- /dev/null +++ b/lib/asn1/src/asn1rt_check.erl @@ -0,0 +1,361 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2001-2009. 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). + +-include("asn1_records.hrl"). + +-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([{'octet-aligned',binary_to_list(Data_value)}, + Data_val_desc|Acc])); +transform_to_EXTERNAL1990([Data_value],Acc) when is_list(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). |