diff options
Diffstat (limited to 'lib/asn1/src/asn1rtt_check.erl')
| -rw-r--r-- | lib/asn1/src/asn1rtt_check.erl | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/lib/asn1/src/asn1rtt_check.erl b/lib/asn1/src/asn1rtt_check.erl new file mode 100644 index 0000000000..e78b65a8fb --- /dev/null +++ b/lib/asn1/src/asn1rtt_check.erl @@ -0,0 +1,276 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 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(asn1rtt_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]). + +check_bool(_Bool, asn1_DEFAULT) -> + true; +check_bool(Bool, Bool) when is_boolean(Bool) -> + 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:keyfind(Value, 1, NNL) of + {_,DefValue} -> + true; + _ -> + throw({error,DefValue}) + end; +check_int(DefaultValue, _Value, _) -> + throw({error,DefaultValue}). + +%% 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:keyfind(Pos, 2, NBL) of + {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 byte_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 byte_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:keyfind(Atom, 1, Enumerations) of + {_,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}}). |