%% ``Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
%% AB. All Rights Reserved.''
%%
%% $Id: asn1ct_gen_ber_bin_v2.erl,v 1.1 2008/12/17 09:53:29 mikpe Exp $
-module(asn1ct_gen_ber_bin_v2).
%% Generate erlang module which handles (PER) encode and decode for
%% all types in an ASN.1 module
-include("asn1_records.hrl").
-export([pgen/4]).
-export([decode_class/1, decode_type/1]).
-export([add_removed_bytes/0]).
-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_objectset_code/2, gen_obj_code/3]).
-export([encode_tag_val/3]).
-export([gen_inc_decode/2]).
-import(asn1ct_gen, [emit/1,demit/1]).
% the encoding of class of tag bits 8 and 7
-define(UNIVERSAL, 0).
-define(APPLICATION, 16#40).
-define(CONTEXT, 16#80).
-define(PRIVATE, 16#C0).
% primitive or constructed encoding % bit 6
-define(PRIMITIVE, 0).
-define(CONSTRUCTED, 2#00100000).
-define(T_ObjectDescriptor, ?UNIVERSAL bor ?PRIMITIVE bor 7).
% restricted character string types
-define(T_NumericString, ?UNIVERSAL bor ?PRIMITIVE bor 18). %can be constructed
-define(T_PrintableString, ?UNIVERSAL bor ?PRIMITIVE bor 19). %can be constructed
-define(T_TeletexString, ?UNIVERSAL bor ?PRIMITIVE bor 20). %can be constructed
-define(T_VideotexString, ?UNIVERSAL bor ?PRIMITIVE bor 21). %can be constructed
-define(T_IA5String, ?UNIVERSAL bor ?PRIMITIVE bor 22). %can be constructed
-define(T_GraphicString, ?UNIVERSAL bor ?PRIMITIVE bor 25). %can be constructed
-define(T_VisibleString, ?UNIVERSAL bor ?PRIMITIVE bor 26). %can be constructed
-define(T_GeneralString, ?UNIVERSAL bor ?PRIMITIVE bor 27). %can be constructed
%% pgen(Erules, Module, TypeOrVal)
%% Generate Erlang module (.erl) and (.hrl) file corresponding to an ASN.1 module
%% .hrl file is only generated if necessary
%% Erules = per | ber
%% Module = atom()
%% TypeOrVal = {TypeList,ValueList,PTypeList}
%% TypeList = ValueList = [atom()]
pgen(OutFile,Erules,Module,TypeOrVal) ->
asn1ct_gen:pgen_module(OutFile,Erules,Module,TypeOrVal,true).
%%===============================================================================
%%===============================================================================
%%===============================================================================
%% Generate ENCODING
%%===============================================================================
%%===============================================================================
%%===============================================================================
%%===============================================================================
%% encode #{typedef, {pos, name, typespec}}
%%===============================================================================
gen_encode(Erules,Type) when record(Type,typedef) ->
gen_encode_user(Erules,Type).
%%===============================================================================
%% encode #{type, {tag, def, constraint}}
%%===============================================================================
gen_encode(Erules,Typename,Type) when record(Type,type) ->
InnerType = asn1ct_gen:get_inner(Type#type.def),
ObjFun =
case lists:keysearch(objfun,1,Type#type.tablecinf) of
{value,{_,_Name}} ->
", ObjFun";
false ->
""
end,
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
emit([nl,nl,nl,"%%================================"]),
emit([nl,"%% ",asn1ct_gen:list2name(Typename)]),
emit([nl,"%%================================",nl]),
case length(Typename) of
1 -> % top level type
emit(["'enc_",asn1ct_gen:list2name(Typename),
"'(Val",ObjFun,") ->",nl]),
emit([" 'enc_",asn1ct_gen:list2name(Typename),
"'(Val, ", {asis,lists:reverse(Type#type.tag)},ObjFun,").",nl,nl]);
_ -> % embedded type with constructed name
true
end,
case lists:member(InnerType,['SET','SEQUENCE']) of
true ->
case get(asn_keyed_list) of
true ->
CompList =
case Type#type.def of
#'SEQUENCE'{components=Cl} -> Cl;
#'SET'{components=Cl} -> Cl
end,
emit([nl,"'enc_",asn1ct_gen:list2name(Typename),
"'(Val, TagIn",ObjFun,
") when list(Val) ->",nl]),
emit([" 'enc_",asn1ct_gen:list2name(Typename),
"'(?RT_BER:fixoptionals(",
{asis,optionals(CompList)},
",Val), TagIn",ObjFun,");",nl,nl]);
_ -> true
end;
_ ->
emit([nl,"'enc_",asn1ct_gen:list2name(Typename),
"'({'",asn1ct_gen:list2name(Typename),
"',Val}, TagIn",ObjFun,") ->",nl]),
emit([" 'enc_",asn1ct_gen:list2name(Typename),
"'(Val, TagIn",ObjFun,");",nl,nl])
end,
emit(["'enc_",asn1ct_gen:list2name(Typename),
"'(Val, TagIn",ObjFun,") ->",nl," "]),
asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type);
_ ->
true
end;
%%===============================================================================
%% encode ComponentType
%%===============================================================================
gen_encode(Erules,Tname,{'ComponentType',_Pos,Cname,Type,_Prop,_Tags}) ->
NewTname = [Cname|Tname],
%% The tag is set to [] to avoid that it is
%% taken into account twice, both as a component/alternative (passed as
%% argument to the encode decode function and within the encode decode
%% function it self.
NewType = Type#type{tag=[]},
gen_encode(Erules,NewTname,NewType).
gen_encode_user(Erules,D) when record(D,typedef) ->
Typename = [D#typedef.name],
Type = D#typedef.typespec,
InnerType = asn1ct_gen:get_inner(Type#type.def),
OTag = Type#type.tag,
Tag = [encode_tag_val(decode_class(X#tag.class),X#tag.form,X#tag.number)|| X <- OTag],
emit([nl,nl,"%%================================"]),
emit([nl,"%% ",Typename]),
emit([nl,"%%================================",nl]),
emit(["'enc_",asn1ct_gen:list2name(Typename),
"'(Val",") ->",nl]),
emit([" 'enc_",asn1ct_gen:list2name(Typename),
"'(Val, ", {asis,lists:reverse(Tag)},").",nl,nl]),
case lists:member(InnerType,['SET','SEQUENCE']) of
true ->
case get(asn_keyed_list) of
true ->
CompList =
case Type#type.def of
#'SEQUENCE'{components=Cl} -> Cl;
#'SET'{components=Cl} -> Cl
end,
emit([nl,"'enc_",asn1ct_gen:list2name(Typename),
"'(Val, TagIn) when list(Val) ->",nl]),
emit([" 'enc_",asn1ct_gen:list2name(Typename),
"'(?RT_BER:fixoptionals(",
{asis,optionals(CompList)},
",Val), TagIn);",nl,nl]);
_ -> true
end;
_ ->
emit({nl,"'enc_",asn1ct_gen:list2name(Typename),
"'({'",asn1ct_gen:list2name(Typename),"',Val}, TagIn) ->",nl}),
emit({" 'enc_",asn1ct_gen:list2name(Typename),"'(Val, TagIn);",nl,nl})
end,
emit({"'enc_",asn1ct_gen:list2name(Typename),"'(Val, TagIn) ->",nl}),
CurrentMod = get(currmod),
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,D);
{primitive,bif} ->
gen_encode_prim(ber,Type,"TagIn","Val"),
emit([".",nl]);
#typereference{val=Ename} ->
emit([" 'enc_",Ename,"'(Val, TagIn).",nl]);
#'Externaltypereference'{module=CurrentMod,type=Etype} ->
emit([" 'enc_",Etype,"'(Val, TagIn).",nl]);
#'Externaltypereference'{module=Emod,type=Etype} ->
emit([" '",Emod,"':'enc_",Etype,"'(Val, TagIn).",nl]);
'ASN1_OPEN_TYPE' ->
emit(["%% OPEN TYPE",nl]),
gen_encode_prim(ber,
Type#type{def='ASN1_OPEN_TYPE'},
"TagIn","Val"),
emit([".",nl])
end.
gen_encode_prim(_Erules,D,DoTag,Value) when record(D,type) ->
%%% Constraint is currently not used for BER (except for BitString) and therefore replaced
%%% with [] as a placeholder
BitStringConstraint = D#type.constraint,
Constraint = [],
asn1ct_name:new(enumval),
case D#type.def of
'BOOLEAN' ->
emit_encode_func('boolean',Value,DoTag);
'INTEGER' ->
emit_encode_func('integer',Constraint,Value,DoTag);
{'INTEGER',NamedNumberList} ->
emit_encode_func('integer',Constraint,Value,
NamedNumberList,DoTag);
{'ENUMERATED',NamedNumberList={_,_}} ->
emit(["case (case ",Value," of {asn1_enum,_}->",Value,";{_,_}->element(2,",Value,");_->",
Value," end) of",nl]),
emit_enc_enumerated_cases(NamedNumberList,DoTag);
{'ENUMERATED',NamedNumberList} ->
emit(["case (case ",Value," of {_,_}->element(2,",Value,");_->",
Value," end) of",nl]),
emit_enc_enumerated_cases(NamedNumberList,DoTag);
{'BIT STRING',NamedNumberList} ->
emit_encode_func('bit_string',BitStringConstraint,Value,
NamedNumberList,DoTag);
'ANY' ->
emit_encode_func('open_type', Value,DoTag);
'NULL' ->
emit_encode_func('null',Value,DoTag);
'OBJECT IDENTIFIER' ->
emit_encode_func("object_identifier",Value,DoTag);
'ObjectDescriptor' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_ObjectDescriptor,DoTag);
'OCTET STRING' ->
emit_encode_func('octet_string',Constraint,Value,DoTag);
'NumericString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_NumericString,DoTag);
'TeletexString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_TeletexString,DoTag);
'VideotexString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_VideotexString,DoTag);
'GraphicString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_GraphicString,DoTag);
'VisibleString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_VisibleString,DoTag);
'GeneralString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_GeneralString,DoTag);
'PrintableString' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_PrintableString,DoTag);
'IA5String' ->
emit_encode_func('restricted_string',Constraint,Value,
?T_IA5String,DoTag);
'UniversalString' ->
emit_encode_func('universal_string',Constraint,Value,DoTag);
'BMPString' ->
emit_encode_func('BMP_string',Constraint,Value,DoTag);
'UTCTime' ->
emit_encode_func('utc_time',Constraint,Value,DoTag);
'GeneralizedTime' ->
emit_encode_func('generalized_time',Constraint,Value,DoTag);
'ASN1_OPEN_TYPE' ->
emit_encode_func('open_type', Value,DoTag);
XX ->
exit({'can not encode' ,XX})
end.
emit_encode_func(Name,Value,Tags) when atom(Name) ->
emit_encode_func(atom_to_list(Name),Value,Tags);
emit_encode_func(Name,Value,Tags) ->
Fname = "?RT_BER:encode_" ++ Name,
emit([Fname,"(",Value,", ",Tags,")"]).
emit_encode_func(Name,Constraint,Value,Tags) when atom(Name) ->
emit_encode_func(atom_to_list(Name),Constraint,Value,Tags);
emit_encode_func(Name,Constraint,Value,Tags) ->
Fname = "?RT_BER:encode_" ++ Name,
emit([Fname,"(",{asis,Constraint},", ",Value,", ",Tags,")"]).
emit_encode_func(Name,Constraint,Value,Asis,Tags) when atom(Name) ->
emit_encode_func(atom_to_list(Name),Constraint,Value,Asis,Tags);
emit_encode_func(Name,Constraint,Value,Asis,Tags) ->
Fname = "?RT_BER:encode_" ++ Name,
emit([Fname,"(",{asis,Constraint},", ",Value,
", ",{asis,Asis},
", ",Tags,")"]).
emit_enc_enumerated_cases({L1,L2}, Tags) ->
emit_enc_enumerated_cases(L1++L2, Tags, ext);
emit_enc_enumerated_cases(L, Tags) ->
emit_enc_enumerated_cases(L, Tags, noext).
emit_enc_enumerated_cases([{EnumName,EnumVal},H2|T], Tags, Ext) ->
emit([{asis,EnumName}," -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,");",nl]),
%% emit(["'",{asis,EnumName},"' -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,");",nl]),
emit_enc_enumerated_cases([H2|T], Tags, Ext);
emit_enc_enumerated_cases([{EnumName,EnumVal}], Tags, Ext) ->
emit([{asis,EnumName}," -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,")"]),
%% emit(["'",{asis,EnumName},"' -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,")"]),
case Ext of
noext -> emit([";",nl]);
ext ->
emit([";",nl,"{asn1_enum,",{curr,enumval},"} -> ",
"?RT_BER:encode_enumerated(",{curr,enumval},",",Tags,");",nl]),
asn1ct_name:new(enumval)
end,
emit([{curr,enumval}," -> exit({error,{asn1, {enumerated_not_in_range,",{curr, enumval},"}}})"]),
emit([nl,"end"]).
%%===============================================================================
%%===============================================================================
%%===============================================================================
%% Generate DECODING
%%===============================================================================
%%===============================================================================
%%===============================================================================
%%===============================================================================
%% decode #{typedef, {pos, name, typespec}}
%%===============================================================================
gen_decode(Erules,Type) when record(Type,typedef) ->
Def = Type#typedef.typespec,
InnerTag = Def#type.tag ,
Tag = [(decode_class(X#tag.class) bsl 10) + X#tag.number || X <- InnerTag],
Prefix =
case {asn1ct:get_gen_state_field(active),
asn1ct:get_gen_state_field(prefix)} of
{true,Pref} -> Pref;
_ -> "dec_"
end,
emit({nl,nl}),
emit(["'",Prefix,Type#typedef.name,"'(Tlv) ->",nl]),
emit([" '",Prefix,Type#typedef.name,"'(Tlv, ",{asis,Tag},").",nl,nl]),
emit(["'",Prefix,Type#typedef.name,"'(Tlv, TagIn) ->",nl]),
dbdec(Type#typedef.name),
gen_decode_user(Erules,Type).
gen_inc_decode(Erules,Type) when record(Type,typedef) ->
Prefix = asn1ct:get_gen_state_field(prefix),
emit({nl,nl}),
emit(["'",Prefix,Type#typedef.name,"'(Tlv, TagIn) ->",nl]),
gen_decode_user(Erules,Type).
%%===============================================================================
%% decode #{type, {tag, def, constraint}}
%%===============================================================================
%% This gen_decode is called by the gen_decode/3 that decodes
%% ComponentType and the type of a SEQUENCE OF/SET OF.
gen_decode(Erules,Tname,Type) when record(Type,type) ->
Typename = Tname,
InnerType = asn1ct_gen:get_inner(Type#type.def),
Prefix =
case asn1ct:get_gen_state_field(active) of
true -> "'dec-inc-";
_ -> "'dec_"
end,
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
ObjFun =
case Type#type.tablecinf of
[{objfun,_}|_R] ->
", ObjFun";
_ ->
""
end,
emit([Prefix,asn1ct_gen:list2name(Typename),"'(Tlv, TagIn",ObjFun,") ->",nl]),
dbdec(Typename),
asn1ct_gen:gen_decode_constructed(Erules,Typename,InnerType,Type);
Rec when record(Rec,'Externaltypereference') ->
case {Typename,asn1ct:get_gen_state_field(namelist)} of
{[Cname|_],[{Cname,_}|_]} -> %%
%% This referenced type must only be generated
%% once as incomplete partial decode. Therefore we
%% have to check whether this function already is
%% generated.
case asn1ct:is_function_generated(Typename) of
true ->
ok;
_ ->
asn1ct:generated_refed_func(Typename),
#'Externaltypereference'{module=M,type=Name}=Rec,
TypeDef = asn1_db:dbget(M,Name),
gen_decode(Erules,TypeDef)
end;
_ ->
true
end;
_ ->
true
end;
%%===============================================================================
%% decode ComponentType
%%===============================================================================
gen_decode(Erules,Tname,{'ComponentType',_Pos,Cname,Type,_Prop,_Tags}) ->
NewTname = [Cname|Tname],
%% The tag is set to [] to avoid that it is
%% taken into account twice, both as a component/alternative (passed as
%% argument to the encode decode function and within the encode decode
%% function it self.
NewType = Type#type{tag=[]},
case {asn1ct:get_gen_state_field(active),
asn1ct:get_tobe_refed_func(NewTname)} of
{true,{_,NameList}} ->
asn1ct:update_gen_state(namelist,NameList),
%% remove to gen_refed_funcs list from tobe_refed_funcs later
gen_decode(Erules,NewTname,NewType);
{No,_} when No == false; No == undefined ->
gen_decode(Erules,NewTname,NewType);
_ ->
ok
end.
gen_decode_user(Erules,D) when record(D,typedef) ->
Typename = [D#typedef.name],
Def = D#typedef.typespec,
InnerType = asn1ct_gen:get_inner(Def#type.def),
BytesVar = "Tlv",
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"),
emit({".",nl,nl});
{primitive,bif} ->
asn1ct_name:new(len),
gen_dec_prim(ber, Def, BytesVar,{string,"TagIn"},[] ,
?PRIMITIVE,"OptOrMand"),
emit([".",nl,nl]);
{constructed,bif} ->
asn1ct:update_namelist(D#typedef.name),
asn1ct_gen:gen_decode_constructed(Erules,Typename,InnerType,D);
TheType ->
DecFunName = mkfuncname(TheType,dec),
emit([DecFunName,"(",BytesVar,
", TagIn)"]),
emit([".",nl,nl])
end.
gen_dec_prim(_Erules,Att,BytesVar,DoTag,_TagIn,_Form,_OptOrMand) ->
Typename = Att#type.def,
%% Currently not used for BER replaced with [] as place holder
%% Constraint = Att#type.constraint,
%% Constraint = [],
Constraint =
case get_constraint(Att#type.constraint,'SizeConstraint') of
no -> [];
Tc -> Tc
end,
ValueRange =
case get_constraint(Att#type.constraint,'ValueRange') of
no -> [];
Tv -> Tv
end,
SingleValue =
case get_constraint(Att#type.constraint,'SingleValue') of
no -> [];
Sv -> Sv
end,
AsBin = case get(binary_strings) of
true -> "_as_bin";
_ -> ""
end,
NewTypeName = case Typename of
'ANY' -> 'ASN1_OPEN_TYPE';
_ -> Typename
end,
% DoLength =
case NewTypeName of
'BOOLEAN'->
emit({"?RT_BER:decode_boolean(",BytesVar,","}),
add_func({decode_boolean,2});
'INTEGER' ->
emit({"?RT_BER:decode_integer(",BytesVar,",",
{asis,int_constr(SingleValue,ValueRange)},","}),
add_func({decode_integer,3});
{'INTEGER',NamedNumberList} ->
emit({"?RT_BER:decode_integer(",BytesVar,",",
{asis,int_constr(SingleValue,ValueRange)},",",
{asis,NamedNumberList},","}),
add_func({decode_integer,4});
{'ENUMERATED',NamedNumberList} ->
emit({"?RT_BER:decode_enumerated(",BytesVar,",",
{asis,Constraint},",",
{asis,NamedNumberList},","}),
add_func({decode_enumerated,4});
{'BIT STRING',NamedNumberList} ->
case get(compact_bit_string) of
true ->
emit({"?RT_BER:decode_compact_bit_string(",
BytesVar,",",{asis,Constraint},",",
{asis,NamedNumberList},","}),
add_func({decode_compact_bit_string,4});
_ ->
emit({"?RT_BER:decode_bit_string(",BytesVar,",",
{asis,Constraint},",",
{asis,NamedNumberList},","}),
add_func({decode_bit_string,4})
end;
'NULL' ->
emit({"?RT_BER:decode_null(",BytesVar,","}),
add_func({decode_null,2});
'OBJECT IDENTIFIER' ->
emit({"?RT_BER:decode_object_identifier(",BytesVar,","}),
add_func({decode_object_identifier,2});
'ObjectDescriptor' ->
emit({"?RT_BER:decode_restricted_string(",
BytesVar,",",{asis,Constraint},",",{asis,?T_ObjectDescriptor},","}),
add_func({decode_restricted_string,4});
'OCTET STRING' ->
emit({"?RT_BER:decode_octet_string",AsBin,"(",BytesVar,",",{asis,Constraint},","}),
add_func({decode_octet_string,3});
'NumericString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_NumericString},","}),
add_func({decode_restricted_string,4});
'TeletexString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_TeletexString},","}),
add_func({decode_restricted_string,4});
'VideotexString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_VideotexString},","}),
add_func({decode_restricted_string,4});
'GraphicString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_GraphicString},","}),
add_func({decode_restricted_string,4});
'VisibleString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_VisibleString},","}),
add_func({decode_restricted_string,4});
'GeneralString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_GeneralString},","}),
add_func({decode_restricted_string,4});
'PrintableString' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_PrintableString},","}),
add_func({decode_restricted_string,4});
'IA5String' ->
emit({"?RT_BER:decode_restricted_string",AsBin,"(",
BytesVar,",",{asis,Constraint},",",{asis,?T_IA5String},","}),
add_func({decode_restricted_string,4}) ;
'UniversalString' ->
emit({"?RT_BER:decode_universal_string",AsBin,"(",
BytesVar,",",{asis,Constraint},","}),
add_func({decode_universal_string,3});
'BMPString' ->
emit({"?RT_BER:decode_BMP_string",AsBin,"(",
BytesVar,",",{asis,Constraint},","}),
add_func({decode_BMP_string,3});
'UTCTime' ->
emit({"?RT_BER:decode_utc_time",AsBin,"(",
BytesVar,",",{asis,Constraint},","}),
add_func({decode_utc_time,3});
'GeneralizedTime' ->
emit({"?RT_BER:decode_generalized_time",AsBin,"(",
BytesVar,",",{asis,Constraint},","}),
add_func({decode_generalized_time,3});
'ASN1_OPEN_TYPE' ->
emit(["?RT_BER:decode_open_type_as_binary(",
BytesVar,","]),
add_func({decode_open_type_as_binary,2});
Other ->
exit({'can not decode' ,Other})
end,
case {DoTag,NewTypeName} of
{{string,TagStr},'ASN1_OPEN_TYPE'} ->
emit([TagStr,")"]);
{_,'ASN1_OPEN_TYPE'} ->
emit([{asis,DoTag},")"]);
{{string,TagStr},_} ->
emit([TagStr,")"]);
_ when list(DoTag) ->
emit([{asis,DoTag},")"])
end.
int_constr([],[]) ->
[];
int_constr([],ValueRange) ->
ValueRange;
int_constr(SingleValue,[]) ->
SingleValue;
int_constr(SV,VR) ->
[SV,VR].
%% Object code generating for encoding and decoding
%% ------------------------------------------------
gen_obj_code(Erules,_Module,Obj) when record(Obj,typedef) ->
ObjName = Obj#typedef.name,
Def = Obj#typedef.typespec,
#'Externaltypereference'{module=M,type=ClName} = Def#'Object'.classname,
Class = asn1_db:dbget(M,ClName),
{object,_,Fields} = Def#'Object'.def,
emit({nl,nl,nl,"%%================================"}),
emit({nl,"%% ",ObjName}),
emit({nl,"%%================================",nl}),
EncConstructed =
gen_encode_objectfields(ClName,get_class_fields(Class),
ObjName,Fields,[]),
emit(nl),
gen_encode_constr_type(Erules,EncConstructed),
emit(nl),
DecConstructed =
gen_decode_objectfields(ClName,get_class_fields(Class),
ObjName,Fields,[]),
emit(nl),
gen_decode_constr_type(Erules,DecConstructed),
emit_tlv_format_function();
gen_obj_code(_Erules,_Module,Obj) when record(Obj,pobjectdef) ->
ok.
gen_encode_objectfields(ClassName,[{typefield,Name,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
EmitFuncClause =
fun(Arg) ->
emit(["'enc_",ObjName,"'(",{asis,Name},
", ",Arg,", _RestPrimFieldName) ->",nl])
end,
% emit(["'enc_",ObjName,"'(",{asis,Name},
% ", Val, RestPrimFieldName) ->",nl]),
MaybeConstr=
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} -> %% this case is illegal
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("_"),
emit([" {<<>>,0}"]),
[];
{false,{'DEFAULT',DefaultType}} ->
EmitFuncClause("Val"),
gen_encode_default_call(ClassName,Name,DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Val"),
gen_encode_field_call(ObjName,Name,TypeSpec)
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_encode_objectfields(ClassName,Rest,ObjName,ObjectFields,
MaybeConstr++ConstrAcc);
gen_encode_objectfields(ClassName,[{objectfield,Name,_,_,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
EmitFuncClause =
fun(Args) ->
emit(["'enc_",ObjName,"'(",{asis,Name},
", ",Args,") ->",nl])
end,
% emit(["'enc_",ObjName,"'(",{asis,Name},
% ", Val,[H|T]) ->",nl]),
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} ->
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("_,_"),
emit([" exit({error,{'use of missing field in object', ",Name,
"}})"]);
{false,{'DEFAULT',_DefaultObject}} ->
exit({error,{asn1,{"not implemented yet",Name}}});
{{Name,TypeSpec},_} ->
EmitFuncClause(" Val, [H|T]"),
case TypeSpec#typedef.name of
{ExtMod,TypeName} ->
emit({indent(3),"'",ExtMod,"':'enc_",TypeName,
"'(H, Val, T)"});
TypeName ->
emit({indent(3),"'enc_",TypeName,"'(H, Val, T)"})
end
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_encode_objectfields(ClassName,Rest,ObjName,ObjectFields,ConstrAcc);
% gen_encode_objectfields(Class,ObjName,[{FieldName,Type}|Rest],ConstrAcc) ->
% Fields = Class#objectclass.fields,
% MaybeConstr=
% case is_typefield(Fields,FieldName) of
% true ->
% Def = Type#typedef.typespec,
% emit({"'enc_",ObjName,"'(",{asis,FieldName},
% ", Val, RestPrimFieldName) ->",nl}),
% CAcc=
% case Type#typedef.name of
% {primitive,bif} -> %%tag should be the primitive tag
% OTag = Def#type.tag,
% Tag = [encode_tag_val(decode_class(X#tag.class),
% X#tag.form,X#tag.number)||
% X <- OTag],
% gen_encode_prim(ber,Def,{asis,lists:reverse(Tag)},
% "Val"),
% [];
% {constructed,bif} ->
% emit({" 'enc_",ObjName,'_',FieldName,
% "'(Val)"}),
% [Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}];
% {ExtMod,TypeName} ->
% emit({" '",ExtMod,"':'enc_",TypeName,
% "'(Val)"}),
% [];
% TypeName ->
% emit({" 'enc_",TypeName,"'(Val)"}),
% []
% end,
% case more_genfields(Fields,Rest) of
% true ->
% emit({";",nl});
% false ->
% emit({".",nl})
% end,
% CAcc;
% {false,objectfield} ->
% emit({"'enc_",ObjName,"'(",{asis,FieldName},
% ", Val,[H|T]) ->",nl}),
% case Type#typedef.name of
% {ExtMod,TypeName} ->
% emit({indent(3),"'",ExtMod,"':'enc_",TypeName,
% "'(H, Val, T)"});
% TypeName ->
% emit({indent(3),"'enc_",TypeName,"'(H, Val, T)"})
% end,
% case more_genfields(Fields,Rest) of
% true ->
% emit({";",nl});
% false ->
% emit({".",nl})
% end,
% [];
% {false,_} -> []
% end,
% gen_encode_objectfields(Class,ObjName,Rest,MaybeConstr ++ ConstrAcc);
gen_encode_objectfields(ClassName,[_C|Cs],O,OF,Acc) ->
gen_encode_objectfields(ClassName,Cs,O,OF,Acc);
gen_encode_objectfields(_,[],_,_,Acc) ->
Acc.
% gen_encode_constr_type(Erules,[{Name,Def}|Rest]) ->
% emit({Name,"(Val,TagIn) ->",nl}),
% InnerType = asn1ct_gen:get_inner(Def#type.def),
% asn1ct_gen:gen_encode_constructed(Erules,Name,InnerType,Def),
% gen_encode_constr_type(Erules,Rest);
gen_encode_constr_type(Erules,[TypeDef|Rest]) when record(TypeDef,typedef) ->
case is_already_generated(enc,TypeDef#typedef.name) of
true -> ok;
_ -> gen_encode_user(Erules,TypeDef)
end,
gen_encode_constr_type(Erules,Rest);
gen_encode_constr_type(_,[]) ->
ok.
gen_encode_field_call(ObjName,FieldName,Type) ->
Def = Type#typedef.typespec,
OTag = Def#type.tag,
Tag = [encode_tag_val(decode_class(X#tag.class),
X#tag.form,X#tag.number)||
X <- OTag],
case Type#typedef.name of
{primitive,bif} -> %%tag should be the primitive tag
% OTag = Def#type.tag,
% Tag = [encode_tag_val(decode_class(X#tag.class),
% X#tag.form,X#tag.number)||
% X <- OTag],
gen_encode_prim(ber,Def,{asis,lists:reverse(Tag)},
"Val"),
[];
{constructed,bif} ->
emit({" 'enc_",ObjName,'_',FieldName,
"'(Val,",{asis,Tag},")"}),
[Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}];
{ExtMod,TypeName} ->
emit({" '",ExtMod,"':'enc_",TypeName,
"'(Val,",{asis,Tag},")"}),
[];
TypeName ->
emit({" 'enc_",TypeName,"'(Val,",{asis,Tag},")"}),
[]
end.
gen_encode_default_call(ClassName,FieldName,Type) ->
CurrentMod = get(currmod),
InnerType = asn1ct_gen:get_inner(Type#type.def),
OTag = Type#type.tag,
Tag = [encode_tag_val(decode_class(X#tag.class),X#tag.form,X#tag.number)|| X <- OTag],
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
%% asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type);
emit([" 'enc_",ClassName,'_',FieldName,"'(Bytes)"]),
[#typedef{name=list_to_atom(lists:concat([ClassName,'_',FieldName])),
typespec=Type}];
{primitive,bif} ->
gen_encode_prim(ber,Type,{asis,lists:reverse(Tag)},"Val"),
[];
#'Externaltypereference'{module=CurrentMod,type=Etype} ->
emit([" 'enc_",Etype,"'(Val, ",{asis,Tag},")",nl]),
[];
#'Externaltypereference'{module=Emod,type=Etype} ->
emit([" '",Emod,"':'enc_",Etype,"'(Val, ",{asis,Tag},")",nl]),
[]
% 'ASN1_OPEN_TYPE' ->
% emit(["%% OPEN TYPE",nl]),
% gen_encode_prim(ber,
% Type#type{def='ASN1_OPEN_TYPE'},
% "TagIn","Val"),
% emit([".",nl])
end.
%%%%%%%%%%%%%%%%
gen_decode_objectfields(ClassName,[{typefield,Name,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
EmitFuncClause =
fun(Arg) ->
emit(["'dec_",ObjName,"'(",{asis,Name},
", ",Arg,",_) ->",nl])
end,
% emit(["'dec_",ObjName,"'(",{asis,Name},
% ", Bytes, RestPrimFieldName) ->",nl]),
MaybeConstr=
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} -> %% this case is illegal
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause(" _"),
emit([" asn1_NOVALUE"]),
[];
{false,{'DEFAULT',DefaultType}} ->
EmitFuncClause("Bytes"),
emit_tlv_format("Bytes"),
gen_decode_default_call(ClassName,Name,"Tlv",DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Bytes"),
emit_tlv_format("Bytes"),
gen_decode_field_call(ObjName,Name,"Tlv",TypeSpec)
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_decode_objectfields(ClassName,Rest,ObjName,ObjectFields,MaybeConstr++ConstrAcc);
gen_decode_objectfields(ClassName,[{objectfield,Name,_,_,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
EmitFuncClause =
fun(Args) ->
emit(["'dec_",ObjName,"'(",{asis,Name},
", ",Args,") ->",nl])
end,
% emit(["'dec_",ObjName,"'(",{asis,Name},
% ", Bytes,[H|T]) ->",nl]),
% emit_tlv_format("Bytes"),
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} ->
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("_,_"),
emit([" exit({error,{'illegal use of missing field in object', ",Name,
"}})"]);
{false,{'DEFAULT',_DefaultObject}} ->
exit({error,{asn1,{"not implemented yet",Name}}});
{{Name,TypeSpec},_} ->
EmitFuncClause("Bytes,[H|T]"),
% emit_tlv_format("Bytes"),
case TypeSpec#typedef.name of
{ExtMod,TypeName} ->
emit({indent(3),"'",ExtMod,"':'dec_",TypeName,
"'(H, Bytes, T)"});
TypeName ->
emit({indent(3),"'dec_",TypeName,"'(H, Bytes, T)"})
end
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_decode_objectfields(ClassName,Rest,ObjName,ObjectFields,ConstrAcc);
gen_decode_objectfields(CN,[_C|Cs],O,OF,CAcc) ->
gen_decode_objectfields(CN,Cs,O,OF,CAcc);
gen_decode_objectfields(_,[],_,_,CAcc) ->
CAcc.
emit_tlv_format(Bytes) ->
notice_tlv_format_gen(), % notice for generating of tlv_format/1
emit([" Tlv = tlv_format(",Bytes,"),",nl]).
notice_tlv_format_gen() ->
Module = get(currmod),
% io:format("Noticed: ~p~n",[Module]),
case get(tlv_format) of
{done,Module} ->
ok;
_ -> % true or undefined
put(tlv_format,true)
end.
emit_tlv_format_function() ->
Module = get(currmod),
% io:format("Tlv formated: ~p",[Module]),
case get(tlv_format) of
true ->
% io:format(" YES!~n"),
emit_tlv_format_function1(),
put(tlv_format,{done,Module});
_ ->
% io:format(" NO!~n"),
ok
end.
emit_tlv_format_function1() ->
emit(["tlv_format(Bytes) when binary(Bytes) ->",nl,
" {Tlv,_}=?RT_BER:decode(Bytes),",nl,
" Tlv;",nl,
"tlv_format(Bytes) ->",nl,
" Bytes.",nl]).
gen_decode_constr_type(Erules,[{Name,Def}|Rest]) ->
emit([Name,"(Tlv, TagIn) ->",nl]),
InnerType = asn1ct_gen:get_inner(Def#type.def),
asn1ct_gen:gen_decode_constructed(Erules,Name,InnerType,Def),
gen_decode_constr_type(Erules,Rest);
gen_decode_constr_type(Erules,[TypeDef|Rest]) when record(TypeDef,typedef) ->
case is_already_generated(dec,TypeDef#typedef.name) of
true -> ok;
_ ->
gen_decode(Erules,TypeDef)
end,
gen_decode_constr_type(Erules,Rest);
gen_decode_constr_type(_,[]) ->
ok.
%%%%%%%%%%%
gen_decode_field_call(ObjName,FieldName,Bytes,Type) ->
Def = Type#typedef.typespec,
OTag = Def#type.tag,
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),
[];
{constructed,bif} ->
emit({" 'dec_",ObjName,'_',FieldName,
"'(",Bytes,",",{asis,Tag},")"}),
[Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}];
{ExtMod,TypeName} ->
emit({" '",ExtMod,"':'dec_",TypeName,
"'(",Bytes,",",{asis,Tag},")"}),
[];
TypeName ->
emit({" 'dec_",TypeName,"'(",Bytes,",",{asis,Tag},")"}),
[]
end.
gen_decode_default_call(ClassName,FieldName,Bytes,Type) ->
CurrentMod = get(currmod),
InnerType = asn1ct_gen:get_inner(Type#type.def),
OTag = Type#type.tag,
Tag = [(decode_class(X#tag.class) bsl 10) + X#tag.number || X <- OTag],
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
emit([" 'dec_",ClassName,'_',FieldName,"'(",Bytes,",",
{asis,Tag},")"]),
[#typedef{name=list_to_atom(lists:concat([ClassName,'_',
FieldName])),
typespec=Type}];
{primitive,bif} ->
gen_dec_prim(ber,Type,Bytes,Tag,"TagIn",
?PRIMITIVE,opt_or_default),
[];
#'Externaltypereference'{module=CurrentMod,type=Etype} ->
emit([" 'dec_",Etype,"'(",Bytes, " ,",{asis,Tag},")",nl]),
[];
#'Externaltypereference'{module=Emod,type=Etype} ->
emit([" '",Emod,"':'dec_",Etype,"'(",Bytes,", ",
{asis,Tag},")",nl]),
[]
% 'ASN1_OPEN_TYPE' ->
% emit(["%% OPEN TYPE",nl]),
% gen_encode_prim(ber,
% Type#type{def='ASN1_OPEN_TYPE'},
% "TagIn","Val"),
% emit([".",nl])
end.
%%%%%%%%%%%
is_already_generated(Operation,Name) ->
case get(class_default_type) of
undefined ->
put(class_default_type,[{Operation,Name}]),
false;
GeneratedList ->
case lists:member({Operation,Name},GeneratedList) of
true ->
true;
false ->
put(class_default_type,[{Operation,Name}|GeneratedList]),
false
end
end.
more_genfields([]) ->
false;
more_genfields([Field|Fields]) ->
case element(1,Field) of
typefield ->
true;
objectfield ->
true;
_ ->
more_genfields(Fields)
end.
%% Object Set code generating for encoding and decoding
%% ----------------------------------------------------
gen_objectset_code(Erules,ObjSet) ->
ObjSetName = ObjSet#typedef.name,
Def = ObjSet#typedef.typespec,
% {ClassName,ClassDef} = Def#'ObjectSet'.class,
#'Externaltypereference'{module=ClassModule,
type=ClassName} = Def#'ObjectSet'.class,
ClassDef = asn1_db:dbget(ClassModule,ClassName),
UniqueFName = Def#'ObjectSet'.uniquefname,
Set = Def#'ObjectSet'.set,
emit({nl,nl,nl,"%%================================"}),
emit({nl,"%% ",ObjSetName}),
emit({nl,"%%================================",nl}),
case ClassName of
{_Module,ExtClassName} ->
gen_objset_code(Erules,ObjSetName,UniqueFName,Set,ExtClassName,ClassDef);
_ ->
gen_objset_code(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassDef)
end,
emit(nl).
gen_objset_code(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassDef)->
ClassFields = get_class_fields(ClassDef),
InternalFuncs=gen_objset_enc(Erules,ObjSetName,UniqueFName,Set,
ClassName,ClassFields,1,[]),
gen_objset_dec(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassFields,1),
gen_internal_funcs(Erules,InternalFuncs).
%% gen_objset_enc iterates over the objects of the object set
gen_objset_enc(_,_,{unique,undefined},_,_,_,_,_) ->
%% There is no unique field in the class of this object set
%% don't bother about the constraint
[];
gen_objset_enc(Erules,ObjSName,UniqueName,
[{ObjName,Val,Fields},T|Rest],ClName,ClFields,
NthObj,Acc)->
emit({"'getenc_",ObjSName,"'(",{asis,UniqueName},",",{asis,Val},
") ->",nl}),
{InternalFunc,NewNthObj}=
case ObjName of
no_name ->
gen_inlined_enc_funs(Fields,ClFields,ObjSName,NthObj);
_ ->
emit({" fun 'enc_",ObjName,"'/3"}),
{[],NthObj}
end,
emit({";",nl}),
gen_objset_enc(Erules,ObjSName,UniqueName,[T|Rest],ClName,ClFields,
NewNthObj,InternalFunc ++ Acc);
gen_objset_enc(_,ObjSetName,UniqueName,
[{ObjName,Val,Fields}],_ClName,ClFields,NthObj,Acc) ->
emit({"'getenc_",ObjSetName,"'(",{asis,UniqueName},",",
{asis,Val},") ->",nl}),
{InternalFunc,_} =
case ObjName of
no_name ->
gen_inlined_enc_funs(Fields,ClFields,ObjSetName,NthObj);
_ ->
emit({" fun 'enc_",ObjName,"'/3"}),
{[],NthObj}
end,
emit({".",nl,nl}),
InternalFunc ++ Acc;
%% See X.681 Annex E for the following case
gen_objset_enc(_,ObjSetName,_UniqueName,['EXTENSIONMARK'],_ClName,
_ClFields,_NthObj,Acc) ->
emit({"'getenc_",ObjSetName,"'(_, _) ->",nl}),
emit({indent(3),"fun(_, Val, _RestPrimFieldName) ->",nl}),
emit({indent(6),"Len = case Val of",nl,indent(9),
"Bin when binary(Bin) -> size(Bin);",nl,indent(9),
"_ -> length(Val)",nl,indent(6),"end,"}),
emit({indent(6),"{Val,Len}",nl}),
emit({indent(3),"end.",nl,nl}),
Acc;
gen_objset_enc(_,_,_,[],_,_,_,Acc) ->
Acc.
%% gen_inlined_enc_funs for each object iterates over all fields of a
%% class, and for each typefield it checks if the object has that
%% field and emits the proper code.
gen_inlined_enc_funs(Fields,[{typefield,Name,_}|Rest],
ObjSetName,NthObj) ->
InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]),
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when record(Type,type) ->
emit({indent(3),"fun(Type, Val, _RestPrimFieldName) ->",nl,
indent(6),"case Type of",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj+N,Ret);
{value,{_,Type}} when record(Type,typedef) ->
emit({indent(3),"fun(Type, Val, _RestPrimFieldName) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj+N,Ret);
false ->
gen_inlined_enc_funs(Fields,Rest,ObjSetName,NthObj)
end;
gen_inlined_enc_funs(Fields,[_|Rest],ObjSetName,NthObj) ->
gen_inlined_enc_funs(Fields,Rest,ObjSetName,NthObj);
gen_inlined_enc_funs(_,[],_,NthObj) ->
{[],NthObj}.
gen_inlined_enc_funs1(Fields,[{typefield,Name,_}|Rest],ObjSetName,
NthObj,Acc) ->
InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]),
{Acc2,NAdd}=
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when record(Type,type) ->
emit({";",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
{Ret++Acc,N};
{value,{_,Type}} when record(Type,typedef) ->
emit({";",nl,indent(9),{asis,Name}," ->",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
{Ret++Acc,N};
false ->
{Acc,0}
end,
gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj+NAdd,Acc2);
gen_inlined_enc_funs1(Fields,[_|Rest],ObjSetName,NthObj,Acc)->
gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj,Acc);
gen_inlined_enc_funs1(_,[],_,NthObj,Acc) ->
emit({nl,indent(6),"end",nl}),
emit({indent(3),"end"}),
{Acc,NthObj}.
emit_inner_of_fun(TDef=#typedef{name={ExtMod,Name},typespec=Type},
InternalDefFunName) ->
OTag = Type#type.tag,
Tag = [encode_tag_val(decode_class(X#tag.class),X#tag.form,X#tag.number)|| X <- OTag],
% remove Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag],
case {ExtMod,Name} of
{primitive,bif} ->
emit(indent(12)),
gen_encode_prim(ber,Type,[{asis,lists:reverse(Tag)}],"Val"),
{[],0};
{constructed,bif} ->
emit([indent(12),"'enc_",
InternalDefFunName,"'(Val)"]),
{[TDef#typedef{name=InternalDefFunName}],1};
_ ->
emit({indent(12),"'",ExtMod,"':'enc_",Name,"'(Val)"}),
{[],0}
end;
emit_inner_of_fun(#typedef{name=Name},_) ->
% OTag = Type#type.tag,
% remove Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag],
% Tag = [encode_tag_val(decode_class(X#tag.class),X#tag.form,X#tag.number)|| X <- OTag],
emit({indent(12),"'enc_",Name,"'(Val)"}),
{[],0};
emit_inner_of_fun(Type,_) when record(Type,type) ->
CurrMod = get(currmod),
% OTag = Type#type.tag,
% remove Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag],
% Tag = [encode_tag_val(decode_class(X#tag.class),X#tag.form,X#tag.number)|| X <- OTag],
case Type#type.def of
Def when atom(Def) ->
OTag = Type#type.tag,
Tag = [encode_tag_val(decode_class(X#tag.class),
X#tag.form,X#tag.number)||X <- OTag],
emit([indent(9),Def," ->",nl,indent(12)]),
gen_encode_prim(ber,Type,{asis,lists:reverse(Tag)},"Val");
TRef when record(TRef,typereference) ->
T = TRef#typereference.val,
emit([indent(9),T," ->",nl,indent(12),"'enc_",T,
"'(Val)"]);
#'Externaltypereference'{module=CurrMod,type=T} ->
emit([indent(9),T," ->",nl,indent(12),"'enc_",T,
"'(Val)"]);
#'Externaltypereference'{module=ExtMod,type=T} ->
emit([indent(9),T," ->",nl,indent(12),ExtMod,":'enc_",
T,"'(Val)"])
end,
{[],0}.
indent(N) ->
lists:duplicate(N,32). % 32 = space
gen_objset_dec(_,_,{unique,undefined},_,_,_,_) ->
%% There is no unique field in the class of this object set
%% don't bother about the constraint
ok;
gen_objset_dec(Erules,ObjSName,UniqueName,[{ObjName,Val,Fields},T|Rest],
ClName,ClFields,NthObj)->
emit(["'getdec_",ObjSName,"'(",{asis,UniqueName},",",
{asis,Val},") ->",nl]),
NewNthObj=
case ObjName of
no_name ->
gen_inlined_dec_funs(Fields,ClFields,ObjSName,NthObj);
_ ->
emit([" fun 'dec_",ObjName,"'/3"]),
NthObj
end,
emit([";",nl]),
gen_objset_dec(Erules,ObjSName,UniqueName,[T|Rest],ClName,
ClFields,NewNthObj);
gen_objset_dec(_,ObjSetName,UniqueName,[{ObjName,Val,Fields}],
_ClName,ClFields,NthObj) ->
emit(["'getdec_",ObjSetName,"'(",{asis,UniqueName},",",
{asis,Val},") ->",nl]),
case ObjName of
no_name ->
gen_inlined_dec_funs(Fields,ClFields,ObjSetName,NthObj);
_ ->
emit([" fun 'dec_",ObjName,"'/3"])
end,
emit([".",nl,nl]),
ok;
gen_objset_dec(Erules,ObjSetName,_UniqueName,['EXTENSIONMARK'],_ClName,
_ClFields,_NthObj) ->
emit(["'getdec_",ObjSetName,"'(_, _) ->",nl]),
emit([indent(2),"fun(_,Bytes, _RestPrimFieldName) ->",nl]),
case Erules of
ber_bin_v2 ->
emit([indent(4),"case Bytes of",nl,
indent(6),"Bin when binary(Bin) -> ",nl,
indent(8),"Bin;",nl,
indent(6),"_ ->",nl,
indent(8),"?RT_BER:encode(Bytes)",nl,
indent(4),"end",nl]);
_ ->
emit([indent(6),"Len = case Bytes of",nl,indent(9),
"Bin when binary(Bin) -> size(Bin);",nl,indent(9),
"_ -> length(Bytes)",nl,indent(6),"end,"]),
emit([indent(4),"{Bytes,[],Len}",nl])
end,
emit([indent(2),"end.",nl,nl]),
ok;
gen_objset_dec(_,_,_,[],_,_,_) ->
ok.
gen_inlined_dec_funs(Fields,[{typefield,Name,Prop}|Rest],
ObjSetName,NthObj) ->
DecProp = case Prop of
'OPTIONAL' -> opt_or_default;
{'DEFAULT',_} -> opt_or_default;
_ -> mandatory
end,
InternalDefFunName = [NthObj,Name,ObjSetName],
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when record(Type,type) ->
emit([indent(3),"fun(Type, Bytes, _RestPrimFieldName) ->",
nl,indent(6),"case Type of",nl]),
N=emit_inner_of_decfun(Type,DecProp,InternalDefFunName),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj+N);
{value,{_,Type}} when record(Type,typedef) ->
emit([indent(3),"fun(Type, Bytes, _RestPrimFieldName) ->",
nl,indent(6),"case Type of",nl]),
emit([indent(9),{asis,Name}," ->",nl]),
N=emit_inner_of_decfun(Type,DecProp,InternalDefFunName),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj+N);
false ->
gen_inlined_dec_funs(Fields,Rest,ObjSetName,NthObj)
end;
gen_inlined_dec_funs(Fields,[_H|Rest],ObjSetName,NthObj) ->
gen_inlined_dec_funs(Fields,Rest,ObjSetName,NthObj);
gen_inlined_dec_funs(_,[],_,NthObj) ->
NthObj.
gen_inlined_dec_funs1(Fields,[{typefield,Name,Prop}|Rest],
ObjSetName,NthObj) ->
DecProp = case Prop of
'OPTIONAL' -> opt_or_default;
{'DEFAULT',_} -> opt_or_default;
_ -> mandatory
end,
InternalDefFunName = [NthObj,Name,ObjSetName],
N=
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when record(Type,type) ->
emit([";",nl]),
emit_inner_of_decfun(Type,DecProp,InternalDefFunName);
{value,{_,Type}} when record(Type,typedef) ->
emit([";",nl,indent(9),{asis,Name}," ->",nl]),
emit_inner_of_decfun(Type,DecProp,InternalDefFunName);
false ->
0
end,
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj+N);
gen_inlined_dec_funs1(Fields,[_|Rest],ObjSetName,NthObj)->
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj);
gen_inlined_dec_funs1(_,[],_,NthObj) ->
emit([nl,indent(6),"end",nl]),
emit([indent(3),"end"]),
NthObj.
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],
Tag = [(decode_class(X#tag.class) bsl 10) + X#tag.number || X <- OTag],
case {ExtName,Name} of
{primitive,bif} ->
emit(indent(12)),
gen_dec_prim(ber,Type,"Bytes",Tag,"TagIn",
?PRIMITIVE,Prop),
0;
{constructed,bif} ->
emit([indent(12),"'dec_",
% asn1ct_gen:list2name(InternalDefFunName),"'(Bytes, ",Prop,
% ", ",{asis,Tag},")"]),
asn1ct_gen:list2name(InternalDefFunName),"'(Bytes, ",
{asis,Tag},")"]),
1;
_ ->
emit([indent(12),"'",ExtName,"':'dec_",Name,"'(Bytes)"]),
0
end;
emit_inner_of_decfun(#typedef{name=Name},_Prop,_) ->
emit([indent(12),"'dec_",Name,"'(Bytes)"]),
0;
emit_inner_of_decfun(Type,Prop,_) when record(Type,type) ->
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],
CurrMod = get(currmod),
Def = Type#type.def,
InnerType = asn1ct_gen:get_inner(Def),
WhatKind = asn1ct_gen:type(InnerType),
case WhatKind of
{primitive,bif} ->
emit([indent(9),Def," ->",nl,indent(12)]),
gen_dec_prim(ber,Type,"Bytes",Tag,"TagIn",
?PRIMITIVE,Prop);
#'Externaltypereference'{module=CurrMod,type=T} ->
emit([indent(9),T," ->",nl,indent(12),"'dec_",T,
% "'(Bytes, ",Prop,")"]);
"'(Bytes)"]);
#'Externaltypereference'{module=ExtMod,type=T} ->
emit([indent(9),T," ->",nl,indent(12),ExtMod,":'dec_",
% T,"'(Bytes, ",Prop,")"])
T,"'(Bytes)"])
end,
0.
gen_internal_funcs(_,[]) ->
ok;
gen_internal_funcs(Erules,[TypeDef|Rest]) ->
gen_encode_user(Erules,TypeDef),
emit([nl,nl,"'dec_",TypeDef#typedef.name,
% "'(Tlv, OptOrMand, TagIn) ->",nl]),
"'(Tlv, TagIn) ->",nl]),
gen_decode_user(Erules,TypeDef),
gen_internal_funcs(Erules,Rest).
dbdec(Type) ->
demit({"io:format(\"decoding: ",{asis,Type},"~w~n\",[Bytes]),",nl}).
decode_class('UNIVERSAL') ->
?UNIVERSAL;
decode_class('APPLICATION') ->
?APPLICATION;
decode_class('CONTEXT') ->
?CONTEXT;
decode_class('PRIVATE') ->
?PRIVATE.
decode_type('BOOLEAN') -> 1;
decode_type('INTEGER') -> 2;
decode_type('BIT STRING') -> 3;
decode_type('OCTET STRING') -> 4;
decode_type('NULL') -> 5;
decode_type('OBJECT IDENTIFIER') -> 6;
decode_type('OBJECT DESCRIPTOR') -> 7;
decode_type('EXTERNAL') -> 8;
decode_type('REAL') -> 9;
decode_type('ENUMERATED') -> 10;
decode_type('EMBEDDED_PDV') -> 11;
decode_type('SEQUENCE') -> 16;
decode_type('SEQUENCE OF') -> 16;
decode_type('SET') -> 17;
decode_type('SET OF') -> 17;
decode_type('NumericString') -> 18;
decode_type('PrintableString') -> 19;
decode_type('TeletexString') -> 20;
decode_type('VideotexString') -> 21;
decode_type('IA5String') -> 22;
decode_type('UTCTime') -> 23;
decode_type('GeneralizedTime') -> 24;
decode_type('GraphicString') -> 25;
decode_type('VisibleString') -> 26;
decode_type('GeneralString') -> 27;
decode_type('UniversalString') -> 28;
decode_type('BMPString') -> 30;
decode_type('CHOICE') -> 'CHOICE'; % choice gets the tag from the actual alternative
decode_type(Else) -> exit({error,{asn1,{unrecognized_type,Else}}}).
add_removed_bytes() ->
asn1ct_name:delete(rb),
add_removed_bytes(asn1ct_name:all(rb)).
add_removed_bytes([H,T1|T]) ->
emit({{var,H},"+"}),
add_removed_bytes([T1|T]);
add_removed_bytes([H|T]) ->
emit({{var,H}}),
add_removed_bytes(T);
add_removed_bytes([]) ->
true.
mkfuncname(WhatKind,DecOrEnc) ->
case WhatKind of
#'Externaltypereference'{module=Mod,type=EType} ->
CurrMod = get(currmod),
case CurrMod of
Mod ->
lists:concat(["'",DecOrEnc,"_",EType,"'"]);
_ ->
% io:format("CurrMod: ~p, Mod: ~p~n",[CurrMod,Mod]),
lists:concat(["'",Mod,"':'",DecOrEnc,"_",EType,"'"])
end;
#'typereference'{val=EType} ->
lists:concat(["'",DecOrEnc,"_",EType,"'"]);
'ASN1_OPEN_TYPE' ->
lists:concat(["'",DecOrEnc,"_",WhatKind,"'"])
end.
optionals(L) -> optionals(L,[],1).
optionals([{'EXTENSIONMARK',_,_}|Rest],Acc,Pos) ->
optionals(Rest,Acc,Pos); % optionals in extension are currently not handled
optionals([#'ComponentType'{name=Name,prop='OPTIONAL'}|Rest],Acc,Pos) ->
optionals(Rest,[{Name,Pos}|Acc],Pos+1);
optionals([#'ComponentType'{name=Name,prop={'DEFAULT',_}}|Rest],Acc,Pos) ->
optionals(Rest,[{Name,Pos}|Acc],Pos+1);
optionals([#'ComponentType'{}|Rest],Acc,Pos) ->
optionals(Rest,Acc,Pos+1);
optionals([],Acc,_) ->
lists:reverse(Acc).
get_constraint(C,Key) ->
case lists:keysearch(Key,1,C) of
false ->
no;
{value,{_,V}} ->
V
end.
get_class_fields(#classdef{typespec=ObjClass}) ->
ObjClass#objectclass.fields;
get_class_fields(#objectclass{fields=Fields}) ->
Fields;
get_class_fields(_) ->
[].
get_object_field(Name,ObjectFields) ->
case lists:keysearch(Name,1,ObjectFields) of
{value,Field} -> Field;
false -> false
end.
%%encode_tag(TagClass(?UNI, APP etc), Form (?PRIM etx), TagInteger) ->
%% 8bit Int | binary
encode_tag_val(Class, Form, TagNo) when (TagNo =< 30) ->
<<(Class bsr 6):2,(Form bsr 5):1,TagNo:5>>;
encode_tag_val(Class, Form, TagNo) ->
{Octets,_Len} = mk_object_val(TagNo),
BinOct = list_to_binary(Octets),
<<(Class bsr 6):2, (Form bsr 5):1, 31:5,BinOct/binary>>.
%%%%%%%%%%%
%% mk_object_val(Value) -> {OctetList, Len}
%% returns a Val as a list of octets, the 8 bit is allways set to one except
%% for the last octet, where its 0
%%
mk_object_val(Val) when Val =< 127 ->
{[255 band Val], 1};
mk_object_val(Val) ->
mk_object_val(Val bsr 7, [Val band 127], 1).
mk_object_val(0, Ack, Len) ->
{Ack, Len};
mk_object_val(Val, Ack, Len) ->
mk_object_val(Val bsr 7, [((Val band 127) bor 128) | Ack], Len + 1).
add_func(F={_Func,_Arity}) ->
ets:insert(asn1_functab,{F}).
