Add and use asn1rtt_check

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}}).