diff options
Diffstat (limited to 'lib/asn1/src/asn1ct_gen_ber_bin_v2.erl')
-rw-r--r-- | lib/asn1/src/asn1ct_gen_ber_bin_v2.erl | 338 |
1 files changed, 205 insertions, 133 deletions
diff --git a/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl b/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl index bea0ec8968..e51b0898be 100644 --- a/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl +++ b/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl @@ -27,11 +27,12 @@ -export([decode_class/1, decode_type/1]). -export([gen_encode/2,gen_encode/3,gen_decode/2,gen_decode/3]). -export([gen_encode_prim/4]). --export([gen_dec_prim/7]). +-export([gen_dec_prim/3]). -export([gen_objectset_code/2, gen_obj_code/3]). -export([encode_tag_val/3]). -export([gen_inc_decode/2,gen_decode_selected/3]). -export([extaddgroup2sequence/1]). +-export([dialyzer_suppressions/1]). -import(asn1ct_gen, [emit/1,demit/1]). @@ -65,6 +66,23 @@ %%=============================================================================== %%=============================================================================== +dialyzer_suppressions(_) -> + case asn1ct:use_legacy_types() of + false -> ok; + true -> suppress({ber,encode_bit_string,4}) + end, + suppress({ber,decode_selective,2}), + emit([" ok.",nl]). + +suppress({M,F,A}=MFA) -> + case asn1ct_func:is_used(MFA) of + false -> + ok; + true -> + Args = [lists:concat(["element(",I,", Arg)"]) || I <- lists:seq(1, A)], + emit([" ",{call,M,F,Args},com,nl]) + end. + %%=============================================================================== %% encode #{typedef, {pos, name, typespec}} %%=============================================================================== @@ -163,6 +181,12 @@ gen_encode_user(Erules, #typedef{}=D, Wrapper) -> gen_encode_prim(_Erules, #type{}=D, DoTag, Value) -> BitStringConstraint = get_size_constraint(D#type.constraint), + MaxBitStrSize = case BitStringConstraint of + [] -> none; + {_,'MAX'} -> none; + {_,Max} -> Max; + Max when is_integer(Max) -> Max + end, asn1ct_name:new(enumval), Type = case D#type.def of 'OCTET STRING' -> restricted_string; @@ -208,11 +232,11 @@ gen_encode_prim(_Erules, #type{}=D, DoTag, Value) -> "end"]); {'BIT STRING',[]} -> case asn1ct:use_legacy_types() of - false when BitStringConstraint =:= [] -> + false when MaxBitStrSize =:= none -> call(encode_unnamed_bit_string, [Value,DoTag]); false -> call(encode_unnamed_bit_string, - [{asis,BitStringConstraint},Value,DoTag]); + [{asis,MaxBitStrSize},Value,DoTag]); true -> call(encode_bit_string, [{asis,BitStringConstraint},Value, @@ -220,12 +244,12 @@ gen_encode_prim(_Erules, #type{}=D, DoTag, Value) -> end; {'BIT STRING',NamedNumberList} -> case asn1ct:use_legacy_types() of - false when BitStringConstraint =:= [] -> + false when MaxBitStrSize =:= none -> call(encode_named_bit_string, [Value,{asis,NamedNumberList},DoTag]); false -> call(encode_named_bit_string, - [{asis,BitStringConstraint},Value, + [{asis,MaxBitStrSize},Value, {asis,NamedNumberList},DoTag]); true -> call(encode_bit_string, @@ -254,14 +278,20 @@ emit_enc_enumerated_cases(L, Tags) -> emit_enc_enumerated_cases(L, Tags, noext). emit_enc_enumerated_cases([{EnumName,EnumVal}|T], Tags, Ext) -> + Bytes = encode_pos_integer(EnumVal, []), + Len = length(Bytes), emit([{asis,EnumName}," -> ", - {call,ber,encode_enumerated,[EnumVal,Tags]},";",nl]), + {call,ber,encode_tags,[Tags,{asis,Bytes},Len]},";",nl]), emit_enc_enumerated_cases(T, Tags, Ext); emit_enc_enumerated_cases([], _Tags, _Ext) -> %% FIXME: Should extension be handled? emit([{curr,enumval}," -> exit({error,{asn1, {enumerated_not_in_range,",{curr, enumval},"}}})"]), emit([nl,"end"]). +encode_pos_integer(0, [B|_Acc] = L) when B < 128 -> + L; +encode_pos_integer(N, Acc) -> + encode_pos_integer(N bsr 8, [N band 255|Acc]). %%=============================================================================== %%=============================================================================== @@ -339,15 +369,11 @@ gen_decode_selected_type(_Erules,TypeDef) -> case asn1ct_gen:type(InnerType) of 'ASN1_OPEN_TYPE' -> asn1ct_name:new(len), - gen_dec_prim(ber, Def#type{def='ASN1_OPEN_TYPE'}, - BytesVar,Tag, [] , - ?PRIMITIVE,"OptOrMand"); -% emit({";",nl}); + gen_dec_prim(Def#type{def='ASN1_OPEN_TYPE'}, + BytesVar, Tag); {primitive,bif} -> asn1ct_name:new(len), - gen_dec_prim(ber, Def, BytesVar,Tag,[] , - ?PRIMITIVE,"OptOrMand"); -% emit([";",nl]); + gen_dec_prim(Def, BytesVar, Tag); {constructed,bif} -> TopType = case TypeDef#typedef.name of A when is_atom(A) -> [A]; @@ -461,14 +487,12 @@ gen_decode_user(Erules,D) when is_record(D,typedef) -> case asn1ct_gen:type(InnerType) of 'ASN1_OPEN_TYPE' -> asn1ct_name:new(len), - gen_dec_prim(ber, Def#type{def='ASN1_OPEN_TYPE'}, - BytesVar,{string,"TagIn"}, [] , - ?PRIMITIVE,"OptOrMand"), + gen_dec_prim(Def#type{def='ASN1_OPEN_TYPE'}, + BytesVar, {string,"TagIn"}), emit({".",nl,nl}); {primitive,bif} -> asn1ct_name:new(len), - gen_dec_prim(ber, Def, BytesVar,{string,"TagIn"},[] , - ?PRIMITIVE,"OptOrMand"), + gen_dec_prim(Def, BytesVar, {string,"TagIn"}), emit([".",nl,nl]); {constructed,bif} -> asn1ct:update_namelist(D#typedef.name), @@ -481,17 +505,10 @@ gen_decode_user(Erules,D) when is_record(D,typedef) -> end. -gen_dec_prim(_Erules, Att, BytesVar, DoTag, _TagIn, _Form, _OptOrMand) -> +gen_dec_prim(Att, BytesVar, DoTag) -> Typename = Att#type.def, -%% Currently not used for BER replaced with [] as place holder -%% Constraint = Att#type.constraint, -%% Constraint = [], Constraint = get_size_constraint(Att#type.constraint), IntConstr = int_constr(Att#type.constraint), - AsBin = case get(binary_strings) of - true -> "_as_bin"; - _ -> "" - end, NewTypeName = case Typename of 'NumericString' -> restricted_string; 'TeletexString' -> restricted_string; @@ -505,107 +522,77 @@ gen_dec_prim(_Erules, Att, BytesVar, DoTag, _TagIn, _Form, _OptOrMand) -> 'ObjectDescriptor'-> restricted_string; 'UTCTime' -> restricted_string; 'GeneralizedTime' -> restricted_string; + 'OCTET STRING' -> + case asn1ct:use_legacy_types() of + true -> restricted_string; + false -> Typename + end; _ -> Typename end, + TagStr = case DoTag of + {string,Tag1} -> Tag1; + _ when is_list(DoTag) -> {asis,DoTag} + end, case NewTypeName of 'BOOLEAN'-> - emit(["decode_boolean(",BytesVar,","]), - need(decode_boolean, 2); + call(decode_boolean, [BytesVar,TagStr]); 'INTEGER' -> - case IntConstr of - [] -> - emit(["decode_integer(",BytesVar,","]), - need(decode_integer, 2); - {_,_} -> - emit(["decode_integer(",BytesVar,",", - {asis,IntConstr},","]), - need(decode_integer, 3) - end; - {'INTEGER',NamedNumberList} -> - case IntConstr of - [] -> - emit(["decode_named_integer(",BytesVar,",", - {asis,NamedNumberList},","]), - need(decode_named_integer, 3); - {_,_} -> - emit(["decode_named_integer(",BytesVar,",", - {asis,IntConstr},",", - {asis,NamedNumberList},","]), - need(decode_named_integer, 4) - end; - {'ENUMERATED',NamedNumberList} -> - emit(["decode_enumerated(",BytesVar,",", - {asis,NamedNumberList},","]), - need(decode_enumerated, 3); + check_constraint(decode_integer, [BytesVar,TagStr], + IntConstr, + identity, + identity); + {'INTEGER',NNL} -> + check_constraint(decode_integer, + [BytesVar,TagStr], + IntConstr, + identity, + fun(Val) -> + asn1ct_name:new(val), + emit([{curr,val}," = "]), + Val(), + emit([com,nl, + {call,ber,number2name, + [{curr,val},{asis,NNL}]}]) + end); + {'ENUMERATED',NNL} -> + gen_dec_enumerated(BytesVar, NNL, TagStr); 'REAL' -> - ok; - {'BIT STRING',_NamedNumberList} -> - ok; + asn1ct_name:new(tmpbuf), + emit(["begin",nl, + {curr,tmpbuf}," = ", + {call,ber,match_tags,[BytesVar,TagStr]},com,nl, + {call,real_common,decode_real,[{curr,tmpbuf}]},nl, + "end",nl]); + {'BIT STRING',NNL} -> + gen_dec_bit_string(BytesVar, Constraint, NNL, TagStr); 'NULL' -> - emit(["decode_null(",BytesVar,","]), - need(decode_null, 2); + call(decode_null, [BytesVar,TagStr]); 'OBJECT IDENTIFIER' -> - emit(["decode_object_identifier(",BytesVar,","]), - need(decode_object_identifier, 2); + call(decode_object_identifier, [BytesVar,TagStr]); 'RELATIVE-OID' -> - emit(["decode_relative_oid(",BytesVar,","]), - need(decode_relative_oid, 2); + call(decode_relative_oid, [BytesVar,TagStr]); 'OCTET STRING' -> - F = case asn1ct:use_legacy_types() of - false -> decode_octet_string; - true -> decode_restricted_string - end, - emit([{asis,F},"(",BytesVar,","]), - case Constraint of - [] -> - need(F, 2); - _ -> - emit([{asis,Constraint},","]), - need(F, 3) - end; + check_constraint(decode_octet_string, [BytesVar,TagStr], + Constraint, {erlang,byte_size}, identity); restricted_string -> - emit(["decode_restricted_string",AsBin,"(",BytesVar,","]), - case Constraint of - [] -> - need(decode_restricted_string, 2); - _ -> - emit([{asis,Constraint},","]), - need(decode_restricted_string, 3) - end; + check_constraint(decode_restricted_string, [BytesVar,TagStr], + Constraint, + {erlang,byte_size}, + fun(Val) -> + emit("binary_to_list("), + Val(), + emit(")") + end); 'UniversalString' -> - emit(["decode_universal_string",AsBin,"(", - BytesVar,",",{asis,Constraint},","]), - need(decode_universal_string, 3); + check_constraint(decode_universal_string, [BytesVar,TagStr], + Constraint, {erlang,length}, identity); 'UTF8String' -> - emit(["decode_UTF8_string",AsBin,"(", - BytesVar,","]), - need(decode_UTF8_string, 2); + call(decode_UTF8_string, [BytesVar,TagStr]); 'BMPString' -> - emit(["decode_BMP_string",AsBin,"(", - BytesVar,",",{asis,Constraint},","]), - need(decode_BMP_string, 3); + check_constraint(decode_BMP_string, [BytesVar,TagStr], + Constraint, {erlang,length}, identity); 'ASN1_OPEN_TYPE' -> - emit(["decode_open_type_as_binary(", - BytesVar,","]), - need(decode_open_type_as_binary, 2) - end, - - TagStr = case DoTag of - {string,Tag1} -> Tag1; - _ when is_list(DoTag) -> {asis,DoTag} - end, - case NewTypeName of - {'BIT STRING',NNL} -> - gen_dec_bit_string(BytesVar, Constraint, NNL, TagStr); - 'REAL' -> - asn1ct_name:new(tmpbuf), - emit(["begin",nl, - {curr,tmpbuf}," = ", - {call,ber,match_tags,[BytesVar,TagStr]},com,nl, - {call,real_common,decode_real,[{curr,tmpbuf}]},nl, - "end",nl]); - _ -> - emit([TagStr,")"]) + call(decode_open_type_as_binary, [BytesVar,TagStr]) end. %% Simplify an integer constraint so that we can efficiently test it. @@ -621,7 +608,7 @@ int_constr(C) -> [{'ValueRange',{_,_}=Range}] -> Range; [{'SingleValue',Sv}] -> - {Sv,Sv}; + Sv; [] -> [] end. @@ -632,16 +619,108 @@ gen_dec_bit_string(BytesVar, _Constraint, [_|_]=NNL, TagStr) -> gen_dec_bit_string(BytesVar, Constraint, [], TagStr) -> case asn1ct:get_bit_string_format() of compact -> - call(decode_compact_bit_string, - [BytesVar,{asis,Constraint},TagStr]); + check_constraint(decode_compact_bit_string, + [BytesVar,TagStr], + Constraint, + {ber,compact_bit_string_size}, + identity); legacy -> - call(decode_legacy_bit_string, - [BytesVar,{asis,Constraint},TagStr]); + check_constraint(decode_native_bit_string, + [BytesVar,TagStr], + Constraint, + {erlang,bit_size}, + fun(Val) -> + asn1ct_name:new(val), + emit([{curr,val}," = "]), + Val(), + emit([com,nl, + {call,ber,native_to_legacy_bit_string, + [{curr,val}]}]) + end); bitstring -> - call(decode_native_bit_string, - [BytesVar,{asis,Constraint},TagStr]) + check_constraint(decode_native_bit_string, + [BytesVar,TagStr], + Constraint, + {erlang,bit_size}, + identity) + end. + +check_constraint(F, Args, Constr, PreConstr0, ReturnVal0) -> + PreConstr = case PreConstr0 of + identity -> + fun(V) -> V end; + {Mod,Name} -> + fun(V) -> + asn1ct_name:new(c), + emit([{curr,c}," = ", + {call,Mod,Name,[V]},com,nl]), + {curr,c} + end + end, + ReturnVal = case ReturnVal0 of + identity -> fun(Val) -> Val() end; + _ -> ReturnVal0 + end, + case Constr of + [] when ReturnVal0 =:= identity -> + %% No constraint, no complications. + call(F, Args); + [] -> + %% No constraint, but the return value could consist + %% of more than one statement. + emit(["begin",nl]), + ReturnVal(fun() -> call(F, Args) end), + emit([nl, + "end",nl]); + _ -> + %% There is a constraint. + asn1ct_name:new(val), + emit(["begin",nl, + {curr,val}," = ",{call,ber,F,Args},com,nl]), + PreVal0 = asn1ct_gen:mk_var(asn1ct_name:curr(val)), + PreVal = PreConstr(PreVal0), + emit("if "), + case Constr of + {Min,Max} -> + emit([{asis,Min}," =< ",PreVal,", ", + PreVal," =< ",{asis,Max}]); + Sv when is_integer(Sv) -> + emit([PreVal," =:= ",{asis,Sv}]) + end, + emit([" ->",nl]), + ReturnVal(fun() -> emit(PreVal0) end), + emit([";",nl, + "true ->",nl, + "exit({error,{asn1,bad_range}})",nl, + "end",nl, + "end"]) end. +gen_dec_enumerated(BytesVar, NNL0, TagStr) -> + asn1ct_name:new(enum), + emit(["case ", + {call,ber,decode_integer,[BytesVar,TagStr]}, + " of",nl]), + NNL = case NNL0 of + {L1,L2} -> + L1 ++ L2 ++ [accept]; + [_|_] -> + NNL0 ++ [error] + end, + gen_dec_enumerated_1(NNL), + emit("end"). + +gen_dec_enumerated_1([accept]) -> + asn1ct_name:new(default), + emit([{curr,default}," -> {asn1_enum,",{curr,default},"}",nl]); +gen_dec_enumerated_1([error]) -> + asn1ct_name:new(default), + emit([{curr,default}," -> exit({error,{asn1,{illegal_enumerated,", + {curr,default},"}}})",nl]); +gen_dec_enumerated_1([{V,K}|T]) -> + emit([{asis,K}," -> ",{asis,V},";",nl]), + gen_dec_enumerated_1(T). + %% Object code generating for encoding and decoding %% ------------------------------------------------ @@ -986,9 +1065,8 @@ gen_decode_field_call(ObjName,FieldName,Bytes,Type) -> Tag = [(decode_class(X#tag.class) bsl 10) + X#tag.number || X <- OTag], case Type#typedef.name of - {primitive,bif} -> %%tag should be the primitive tag - gen_dec_prim(ber,Def,Bytes,Tag,"TagIn",?PRIMITIVE, - opt_or_default), + {primitive,bif} -> + gen_dec_prim(Def, Bytes, Tag), []; {constructed,bif} -> emit({" 'dec_",ObjName,'_',FieldName, @@ -1016,8 +1094,7 @@ gen_decode_default_call(ClassName,FieldName,Bytes,Type) -> FieldName])), typespec=Type}]; {primitive,bif} -> - gen_dec_prim(ber,Type,Bytes,Tag,"TagIn", - ?PRIMITIVE,opt_or_default), + gen_dec_prim(Type, Bytes, Tag), []; #'Externaltypereference'{module=CurrentMod,type=Etype} -> emit([" 'dec_",Etype,"'(",Bytes, " ,",{asis,Tag},")",nl]), @@ -1386,7 +1463,7 @@ emit_dec_open_type(I) -> end, emit(S). -emit_inner_of_decfun(#typedef{name={ExtName,Name},typespec=Type},Prop, +emit_inner_of_decfun(#typedef{name={ExtName,Name},typespec=Type}, _Prop, InternalDefFunName) -> OTag = Type#type.tag, %% Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], @@ -1394,8 +1471,7 @@ emit_inner_of_decfun(#typedef{name={ExtName,Name},typespec=Type},Prop, case {ExtName,Name} of {primitive,bif} -> emit(indent(12)), - gen_dec_prim(ber,Type,"Bytes",Tag,"TagIn", - ?PRIMITIVE,Prop), + gen_dec_prim(Type, "Bytes", Tag), 0; {constructed,bif} -> emit([indent(12),"'dec_", @@ -1412,7 +1488,7 @@ emit_inner_of_decfun(#typedef{name={ExtName,Name},typespec=Type},Prop, emit_inner_of_decfun(#typedef{name=Name},_Prop,_) -> emit([indent(12),"'dec_",Name,"'(Bytes)"]), 0; -emit_inner_of_decfun(Type,Prop,_) when is_record(Type,type) -> +emit_inner_of_decfun(#type{}=Type, _Prop, _) -> OTag = Type#type.tag, %% Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], Tag = [(decode_class(X#tag.class) bsl 10) + X#tag.number || X <- OTag], @@ -1423,8 +1499,7 @@ emit_inner_of_decfun(Type,Prop,_) when is_record(Type,type) -> case WhatKind of {primitive,bif} -> emit([indent(9),Def," ->",nl,indent(12)]), - gen_dec_prim(ber,Type,"Bytes",Tag,"TagIn", - ?PRIMITIVE,Prop); + gen_dec_prim(Type, "Bytes", Tag); #'Externaltypereference'{module=CurrMod,type=T} -> emit([indent(9),T," ->",nl,indent(12),"'dec_",T, % "'(Bytes, ",Prop,")"]); @@ -1561,6 +1636,3 @@ extaddgroup2sequence(ExtList) when is_list(ExtList) -> call(F, Args) -> asn1ct_func:call(ber, F, Args). - -need(F, Arity) -> - asn1ct_func:need({ber,F,Arity}). |