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authorBjörn Gustavsson <[email protected]>2014-02-25 09:04:47 +0100
committerBjörn Gustavsson <[email protected]>2014-02-28 11:57:05 +0100
commit7505ac9334c0e0a62dd81f9e0fdee8a1a5a7eb01 (patch)
tree27f95fc38661f7ad1346e75be0a94954fadcd4c0 /lib/asn1/src
parent0e3d94fef11e126b0d772134cd5b3582aa1169f3 (diff)
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asn1ct_check: Rewrite error checking for INTEGER and BIT STRING
The error checking code for INTEGER and BIT STRING was broken, since it built an error tuple that was never returned. Rewrite the error checking code, sharing most of the code between INTEGER and BIT STRING. Make sure that we test for both duplicated names and number, as well as for negative bit numbers for BIT STRING. This rewrite will eliminate two dialyzer warnings for unmatched returns.
Diffstat (limited to 'lib/asn1/src')
-rw-r--r--lib/asn1/src/asn1ct_check.erl101
1 files changed, 41 insertions, 60 deletions
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl
index 76166d4fd8..18275b57a4 100644
--- a/lib/asn1/src/asn1ct_check.erl
+++ b/lib/asn1/src/asn1ct_check.erl
@@ -3084,7 +3084,7 @@ check_type(S=#state{recordtopname=TopName},Type,Ts) when is_record(Ts,type) ->
merge_tags(Tag,?TAG_PRIMITIVE(?N_INTEGER))};
{'INTEGER',NamedNumberList} ->
- TempNewDef#newt{type={'INTEGER',check_integer(S,NamedNumberList,Constr)},
+ TempNewDef#newt{type={'INTEGER',check_integer(S,NamedNumberList)},
tag=
merge_tags(Tag,?TAG_PRIMITIVE(?N_INTEGER))};
'REAL' ->
@@ -3092,8 +3092,7 @@ check_type(S=#state{recordtopname=TopName},Type,Ts) when is_record(Ts,type) ->
TempNewDef#newt{tag=merge_tags(Tag,?TAG_PRIMITIVE(?N_REAL))};
{'BIT STRING',NamedNumberList} ->
- NewL = check_bitstring(S,NamedNumberList,Constr),
-%% erlang:display({asn1ct_check,NamedNumberList,NewL}),
+ NewL = check_bitstring(S, NamedNumberList),
TempNewDef#newt{type={'BIT STRING',NewL},
tag=
merge_tags(Tag,?TAG_PRIMITIVE(?N_BIT_STRING))};
@@ -4910,70 +4909,46 @@ imported1(Name,
end;
imported1(_Name,[]) ->
false.
-
-check_integer(_S,[],_C) ->
+%% Check the named number list for an INTEGER or a BIT STRING.
+check_named_number_list(_S, []) ->
[];
-check_integer(S,NamedNumberList,_C) ->
- case [X || X <- NamedNumberList, tuple_size(X) =:= 2] of
- NamedNumberList ->
- %% An already checked integer with NamedNumberList
- NamedNumberList;
- _ ->
- case check_unique(NamedNumberList,2) of
- [] ->
- check_int(S,NamedNumberList,[]);
- L when is_list(L) ->
- error({type,{duplicates,L},S}),
- unchanged
- end
+check_named_number_list(_S, [{_,_}|_]=NNL) ->
+ %% The named number list has already been checked.
+ NNL;
+check_named_number_list(S, NNL0) ->
+ %% Check that the names are unique.
+ T = S#state.type,
+ case check_unique(NNL0, 2) of
+ [] ->
+ NNL1 = [{Id,resolve_valueref(S, Val)} || {'NamedNumber',Id,Val} <- NNL0],
+ NNL = lists:keysort(2, NNL1),
+ case check_unique(NNL, 2) of
+ [] ->
+ NNL;
+ [Val|_] ->
+ asn1_error(S, T, {value_reused,Val})
+ end;
+ [H|_] ->
+ asn1_error(S, T, {namelist_redefinition,H})
end.
-
-check_int(S,[{'NamedNumber',Id,Num}|T],Acc) when is_integer(Num) ->
- check_int(S,T,[{Id,Num}|Acc]);
-check_int(S,[{'NamedNumber',Id,{'Externalvaluereference',_,Mod,Name}}|T],Acc) ->
- Val = dbget_ex(S,Mod,Name),
- check_int(S,[{'NamedNumber',Id,Val#valuedef.value}|T],Acc);
-check_int(_S,[],Acc) ->
- lists:keysort(2,Acc).
+resolve_valueref(S, #'Externalvaluereference'{module=Mod,value=Name}) ->
+ dbget_ex(S, Mod, Name);
+resolve_valueref(_, Val) when is_integer(Val) ->
+ Val.
-check_real(_S,_Constr) ->
- ok.
+check_integer(S, NNL) ->
+ check_named_number_list(S, NNL).
-check_bitstring(_S,[],_Constr) ->
- [];
-check_bitstring(S,NamedNumberList,_Constr) ->
- case check_unique(NamedNumberList,2) of
- [] ->
- check_bitstr(S,NamedNumberList,[]);
- L when is_list(L) ->
- error({type,{duplicates,L},S}),
- unchanged
- end.
+check_bitstring(S, NNL0) ->
+ NNL = check_named_number_list(S, NNL0),
+ _ = [asn1_error(S, S#state.type, {invalid_bit_number,Bit}) ||
+ {_,Bit} <- NNL, Bit < 0],
+ NNL.
-check_bitstr(S,[{'NamedNumber',Id,Num}|T],Acc)when is_integer(Num) ->
- check_bitstr(S,T,[{Id,Num}|Acc]);
-check_bitstr(S,[{'NamedNumber',Id,Name}|T],Acc) when is_atom(Name) ->
-%%check_bitstr(S,[{'NamedNumber',Id,{identifier,_,Name}}|T],Acc) ->
-%% io:format("asn1ct_check:check_bitstr/3 hej hop ~w~n",[Name]),
- Val = dbget_ex(S,S#state.mname,Name),
-%% io:format("asn1ct_check:check_bitstr/3: ~w~n",[Val]),
- check_bitstr(S,[{'NamedNumber',Id,Val#valuedef.value}|T],Acc);
-check_bitstr(S,[],Acc) ->
- case check_unique(Acc,2) of
- [] ->
- lists:keysort(2,Acc);
- L when is_list(L) ->
- error({type,{duplicate_values,L},S}),
- unchanged
- end;
-%% When a BIT STRING already is checked, for instance a COMPONENTS OF S
-%% where S is a sequence that has a component that is a checked BS, the
-%% NamedNumber list is a list of {atom(),integer()} elements.
-check_bitstr(S,[El={Id,Num}|Rest],Acc) when is_atom(Id),is_integer(Num) ->
- check_bitstr(S,Rest,[El|Acc]).
-
+check_real(_S,_Constr) ->
+ ok.
%% Check INSTANCE OF
%% check that DefinedObjectClass is of TYPE-IDENTIFIER class
@@ -6803,11 +6778,17 @@ format_error(illegal_octet_string_value) ->
"expecting a bstring or an hstring as value for an OCTET STRING";
format_error({invalid_fields,Fields,Obj}) ->
io_lib:format("invalid ~s in ~p", [format_fields(Fields),Obj]);
+format_error({invalid_bit_number,Bit}) ->
+ io_lib:format("the bit number '~p' is invalid", [Bit]);
format_error({missing_mandatory_fields,Fields,Obj}) ->
io_lib:format("missing mandatory ~s in ~p",
[format_fields(Fields),Obj]);
+format_error({namelist_redefinition,Name}) ->
+ io_lib:format("the name '~s' can not be redefined", [Name]);
format_error({undefined,Name}) ->
io_lib:format("'~s' is referenced, but is not defined", [Name]);
+format_error({value_reused,Val}) ->
+ io_lib:format("the value '~p' is used more than once", [Val]);
format_error(Other) ->
io_lib:format("~p", [Other]).