diff options
Diffstat (limited to 'lib/asn1')
| -rw-r--r-- | lib/asn1/src/asn1ct_imm.erl | 21 | ||||
| -rw-r--r-- | lib/asn1/test/asn1_SUITE_data/Constraints.py | 5 | ||||
| -rw-r--r-- | lib/asn1/test/testConstraints.erl | 64 |
3 files changed, 88 insertions, 2 deletions
diff --git a/lib/asn1/src/asn1ct_imm.erl b/lib/asn1/src/asn1ct_imm.erl index 892178f61b..7af7e192c3 100644 --- a/lib/asn1/src/asn1ct_imm.erl +++ b/lib/asn1/src/asn1ct_imm.erl @@ -994,6 +994,25 @@ mk_var(Base, V) -> per_enc_integer_1(Val, [], Aligned) -> [{'cond',[['_'|per_enc_unconstrained(Val, Aligned)]]}]; +per_enc_integer_1(Val, [{{'SingleValue',[_|_]=Svs}=Constr,[]}], Aligned) -> + %% An extensible constraint such as (1|17, ...). + %% + %% A subtle detail is that the extension root as described in the + %% ASN.1 spec should be used to determine whether a particular value + %% belongs to the extension root (as opposed to the effective + %% constraint, which will be used for the actual encoding). + %% + %% So for the example above, only the integers 1 and 17 should be + %% encoded as root values (extension bit = 0). + + [{'ValueRange',{Lb,Ub}}] = effective_constraint(integer, [Constr]), + Root = [begin + {[],_,Put} = per_enc_constrained(Sv, Lb, Ub, Aligned), + [{eq,Val,Sv},{put_bits,0,1,[1]}|Put] + end || Sv <- Svs], + Cs = Root ++ [['_',{put_bits,1,1,[1]}| + per_enc_unconstrained(Val, Aligned)]], + build_cond(Cs); per_enc_integer_1(Val0, [{{_,_}=Constr,[]}], Aligned) -> {Prefix,Check,Action} = per_enc_integer_2(Val0, Constr, Aligned), Prefix++build_cond([[Check,{put_bits,0,1,[1]}|Action], @@ -1004,7 +1023,7 @@ per_enc_integer_1(Val0, [Constr], Aligned) -> Prefix++build_cond([[Check|Action], ['_',{error,Val0}]]). -per_enc_integer_2(Val, {'SingleValue',Sv}, Aligned) -> +per_enc_integer_2(Val, {'SingleValue',Sv}, Aligned) when is_integer(Sv) -> per_enc_constrained(Val, Sv, Sv, Aligned); per_enc_integer_2(Val0, {'ValueRange',{Lb,'MAX'}}, Aligned) when is_integer(Lb) -> diff --git a/lib/asn1/test/asn1_SUITE_data/Constraints.py b/lib/asn1/test/asn1_SUITE_data/Constraints.py index e4bc987e4c..581ec2f467 100644 --- a/lib/asn1/test/asn1_SUITE_data/Constraints.py +++ b/lib/asn1/test/asn1_SUITE_data/Constraints.py @@ -17,6 +17,11 @@ NegSemiConstrained ::= INTEGER (-128..MAX) SemiConstrainedExt ::= INTEGER (42..MAX, ...) NegSemiConstrainedExt ::= INTEGER (-128..MAX, ...) +-- Union of single values +Sv1 ::= INTEGER (2|3|17) +Sv2 ::= INTEGER (2|3|17, ...) +Sv3 ::= INTEGER {a(2),b(3),z(17)} (2|3|17, ...) + -- Other constraints FixedSize ::= OCTET STRING (SIZE(10)) FixedSize2 ::= OCTET STRING (SIZE(10|20)) diff --git a/lib/asn1/test/testConstraints.erl b/lib/asn1/test/testConstraints.erl index 9a1d62993d..34fbbcf6cc 100644 --- a/lib/asn1/test/testConstraints.erl +++ b/lib/asn1/test/testConstraints.erl @@ -122,6 +122,42 @@ int_constraints(Rules) -> range_error(Rules, 'X1', 21), %%========================================================== + %% Union of single values + %% Sv1 ::= INTEGER (2|3|17) + %% Sv2 ::= INTEGER (2|3|17, ...) + %% Sv3 ::= INTEGER {a(2),b(3),z(17)} (2|3|17, ...) + %%========================================================== + + range_error(Rules, 'Sv1', 1), + range_error(Rules, 'Sv1', 18), + roundtrip('Sv1', 2), + roundtrip('Sv1', 3), + roundtrip('Sv1', 7), + + %% Encoded as root + v_roundtrip(Rules, 'Sv2', 2), + v_roundtrip(Rules, 'Sv2', 3), + v_roundtrip(Rules, 'Sv2', 17), + + %% Encoded as extension + v_roundtrip(Rules, 'Sv2', 1), + v_roundtrip(Rules, 'Sv2', 4), + v_roundtrip(Rules, 'Sv2', 18), + + %% Encoded as root + v_roundtrip(Rules, 'Sv3', a), + v_roundtrip(Rules, 'Sv3', b), + v_roundtrip(Rules, 'Sv3', z), + v_roundtrip(Rules, 'Sv3', 2, a), + v_roundtrip(Rules, 'Sv3', 3, b), + v_roundtrip(Rules, 'Sv3', 17, z), + + %% Encoded as extension + v_roundtrip(Rules, 'Sv3', 1), + v_roundtrip(Rules, 'Sv3', 4), + v_roundtrip(Rules, 'Sv3', 18), + + %%========================================================== %% SemiConstrained %%========================================================== @@ -197,7 +233,29 @@ v(per, 'SemiConstrainedExt', 42+128) -> "000180"; v(uper, 'SemiConstrainedExt', 42+128) -> "00C000"; v(ber, 'NegSemiConstrainedExt', 0) -> "020100"; v(per, 'NegSemiConstrainedExt', 0) -> "000180"; -v(uper, 'NegSemiConstrainedExt', 0) -> "00C000". +v(uper, 'NegSemiConstrainedExt', 0) -> "00C000"; +v(ber, 'Sv2', 1) -> "020101"; +v(per, 'Sv2', 1) -> "800101"; +v(uper, 'Sv2', 1) -> "808080"; +v(ber, 'Sv2', 2) -> "020102"; +v(per, 'Sv2', 2) -> "00"; +v(uper, 'Sv2', 2) -> "00"; +v(ber, 'Sv2', 3) -> "020103"; +v(per, 'Sv2', 3) -> "08"; +v(uper, 'Sv2', 3) -> "08"; +v(ber, 'Sv2', 4) -> "020104"; +v(per, 'Sv2', 4) -> "800104"; +v(uper, 'Sv2', 4) -> "808200"; +v(ber, 'Sv2', 17) -> "020111"; +v(per, 'Sv2', 17) -> "78"; +v(uper, 'Sv2', 17) -> "78"; +v(ber, 'Sv2', 18) -> "020112"; +v(per, 'Sv2', 18) -> "800112"; +v(uper, 'Sv2', 18) -> "808900"; +v(Rule, 'Sv3', a) -> v(Rule, 'Sv2', 2); +v(Rule, 'Sv3', b) -> v(Rule, 'Sv2', 3); +v(Rule, 'Sv3', z) -> v(Rule, 'Sv2', 17); +v(Rule, 'Sv3', Val) when is_integer(Val) -> v(Rule, 'Sv2', Val). shorter_ext(per, "a") -> <<16#80,16#01,16#61>>; shorter_ext(uper, "a") -> <<16#80,16#E1>>; @@ -211,6 +269,10 @@ v_roundtrip(Erule, Type, Value) -> Encoded = asn1_test_lib:hex_to_bin(v(Erule, Type, Value)), Encoded = roundtrip('Constraints', Type, Value). +v_roundtrip(Erule, Type, Value, Expected) -> + Encoded = asn1_test_lib:hex_to_bin(v(Erule, Type, Value)), + Encoded = asn1_test_lib:roundtrip_enc('Constraints', Type, Value, Expected). + roundtrip(Type, Value) -> roundtrip('Constraints', Type, Value). |