%% coding: utf-8 %% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2010-2013. 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(diameter_codec_test). -export([base/0, gen/1, lib/0]). %% %% Test encode/decode of dictionary-related modules. %% -include("diameter.hrl"). -define(RFC3588, diameter_gen_base_rfc3588). -define(RFC6733, diameter_gen_base_rfc6733). -define(BOOL, [true, false]). -define(A, list_to_atom). -define(S, atom_to_list). %% =========================================================================== %% Interface. base() -> [] = run([[fun base/1, T] || T <- [zero, decode]]). gen(Mod) -> Fs = [{Mod, F, []} || F <- [name, id, vendor_id, vendor_name]], [] = run(Fs ++ [[fun gen/2, Mod, T] || T <- [messages, command_codes, avp_types, grouped, enum, import_avps, import_groups, import_enums]]). lib() -> Vs = {_,_,_} = values('Address'), [] = run([[fun lib/2, N, Vs] || N <- [{1, true}, {3, false}]]). %% =========================================================================== %% Internal functions. lib({N,B}, {_,_,_} = T) -> [] = run([[fun lib/2, A, B] || A <- element(N,T)]); lib(IP, B) -> LA = tuple_to_list(IP), {SA,Fun} = ip(LA), [] = run([[fun lib/4, IP, B, Fun, A] || A <- [IP, SA]]). lib(IP, B, Fun, A) -> try Fun(A) of IP when B -> ok catch error:_ when not B -> ok end. ip([_,_,_,_] = A) -> [$.|S] = lists:append(["." ++ integer_to_list(N) || N <- A]), {S, fun diameter_lib:ipaddr/1}; ip([_,_,_,_,_,_,_,_] = A) -> [$:|S] = lists:flatten([":" ++ io_lib:format("~.16B", [N]) || N <- A]), {S, fun diameter_lib:ipaddr/1}. %% ------------------------------------------------------------------------ %% base/1 %% %% Test of diameter_types. %% ------------------------------------------------------------------------ base(T) -> [] = run([[fun base/2, T, F] || F <- types()]). %% Ensure that 'zero' values encode only zeros. base(zero = T, F) -> B = diameter_types:F(encode, T), B = z(B); %% Ensure that we can decode what we encode and vice-versa, and that %% we can't decode invalid values. base(decode, F) -> {Ts, Fs, Is} = values(F), [] = run([[fun base_decode/3, F, true, V] || V <- Ts]), [] = run([[fun base_decode/3, F, false, V] || V <- Fs]), [] = run([[fun base_invalid/2, F, V] || V <- Is]). base_decode(F, Eq, Value) -> d(fun(X,V) -> diameter_types:F(X,V) end, Eq, Value). base_invalid(F, Value) -> try base_decode(F, false, Value), exit(nok) catch error: _ -> ok end. types() -> [F || {F,2} <- diameter_types:module_info(exports)]. %% ------------------------------------------------------------------------ %% gen/2 %% %% Test of generated encode/decode module. %% ------------------------------------------------------------------------ gen(M, T) -> [] = run(lists:map(fun(X) -> [fun gen/3, M, T, X] end, fetch(T, dict(M)))). fetch(T, Spec) -> case orddict:find(T, Spec) of {ok, L} -> L; error -> [] end. gen(M, messages = T, {Name, Code, Flags, ApplId, Avps}) when is_list(Name) -> gen(M, T, {?A(Name), Code, Flags, ApplId, Avps}); gen(M, messages, {Name, Code, Flags, _, _}) -> Rname = M:msg2rec(Name), Name = M:rec2msg(Rname), {Code, F, _} = M:msg_header(Name), 0 = F band 2#00001111, Name = case M:msg_name(Code, lists:member('REQ', Flags)) of N when Name /= 'answer-message' -> N; '' when Name == 'answer-message', (M == ?RFC3588 orelse M == ?RFC6733) -> Name end, [] = arity(M, Name, Rname); gen(M, command_codes, {Code, Req, Ans}) -> Msgs = orddict:fetch(messages, dict(M)), {_, Code, _, _, _} = lists:keyfind(Req, 1, Msgs), {_, Code, _, _, _} = lists:keyfind(Ans, 1, Msgs); gen(M, avp_types = T, {Name, Code, Type, Flags}) when is_list(Name) -> gen(M, T, {?A(Name), Code, ?A(Type), Flags}); gen(M, avp_types, {Name, Code, Type, _Flags}) -> {Code, Flags, VendorId} = M:avp_header(Name), 0 = Flags band 2#00011111, V = undefined /= VendorId, V = 0 /= Flags band 2#10000000, {Name, Type} = M:avp_name(Code, VendorId), B = M:empty_value(Name), B = z(B), [] = avp_decode(M, Type, Name); gen(M, grouped = T, {Name, Code, Vid, Avps}) when is_list(Name) -> gen(M, T, {?A(Name), Code, Vid, Avps}); gen(M, grouped, {Name, _, _, _}) -> Rname = M:name2rec(Name), [] = arity(M, Name, Rname); gen(M, enum = T, {Name, ED}) when is_list(Name) -> gen(M, T, {?A(Name), lists:map(fun({E,D}) -> {?A(E), D} end, ED)}); gen(M, enum, {Name, ED}) -> [] = run([[fun enum/3, M, Name, T] || T <- ED]); gen(M, Tag, {_Mod, L}) -> T = retag(Tag), [] = run([[fun gen/3, M, T, I] || I <- L]). %% avp_decode/3 avp_decode(Mod, Type, Name) -> {Ts, Fs, _} = values(Type, Name, Mod), [] = run([[fun avp_decode/5, Mod, Name, Type, true, V] || V <- v(Ts)]), [] = run([[fun avp_decode/5, Mod, Name, Type, false, V] || V <- v(Fs)]). avp_decode(Mod, Name, Type, Eq, Value) -> d(fun(X,V) -> avp(Mod, X, V, Name, Type) end, Eq, Value). avp(Mod, decode = X, V, Name, 'Grouped') -> {Rec, _} = Mod:avp(X, V, Name), Rec; avp(Mod, X, V, Name, _) -> Mod:avp(X, V, Name). %% v/1 %% List of values ... v(Vs) when is_list(Vs) -> Vs; %% .. or enumeration for grouped avps. This could be quite large %% (millions of values) but since the avps are also tested %% individually don't bother trying everything. Instead, choose a %% reasonable number of values at random. v(E) -> v(2000, E(0), E). v(Max, Ord, E) when Ord =< Max -> diameter_enum:to_list(E); v(Max, Ord, E) -> {M,S,U} = now(), random:seed(M,S,U), v(Max, Ord, E, []). v(0, _, _, Acc) -> Acc; v(N, Ord, E, Acc) -> v(N-1, Ord, E, [E(random:uniform(Ord)) | Acc]). %% arity/3 arity(M, Name, Rname) -> Rec = M:'#new-'(Rname), [] = run([[fun arity/4, M, Name, F, Rec] || F <- M:'#info-'(Rname, fields)]). arity(M, Name, AvpName, Rec) -> Def = M:'#get-'(AvpName, Rec), Def = case M:avp_arity(Name, AvpName) of 1 -> undefined; A when 0 /= A -> [] end. %% enum/3 enum(M, Name, {_,E}) -> B = <>, B = M:avp(encode, E, Name), E = M:avp(decode, B, Name). retag(import_avps) -> avp_types; retag(import_groups) -> grouped; retag(import_enums) -> enum; retag(avp_types) -> import_avps; retag(enum) -> import_enums. %% =========================================================================== d(F, Eq, V) -> B = F(encode, V), D = F(decode, B), V = if Eq -> %% test for value equality ... D; true -> %% ... or that encode/decode is idempotent D = F(decode, F(encode, D)), V end. z(B) -> << <<0>> || <<_>> <= B >>. %% values/1 %% %% Return a list of base type values. Can also be wrapped in a tuple %% with 'false' to indicate that encode followed by decode may not be %% the identity map. (Although that this composition is idempotent is %% tested.) values('OctetString' = T) -> {["", atom_to_list(T)], [], [-1, 256]}; values('Integer32') -> Mx = (1 bsl 31) - 1, Mn = -1*Mx, {[Mn, 0, random(Mn,Mx), Mx], [], [Mn - 1, Mx + 1]}; values('Integer64') -> Mx = (1 bsl 63) - 1, Mn = -1*Mx, {[Mn, 0, random(Mn,Mx), Mx], [], [Mn - 1, Mx + 1]}; values('Unsigned32') -> M = (1 bsl 32) - 1, {[0, random(M), M], [], [-1, M + 1]}; values('Unsigned64') -> M = (1 bsl 64) - 1, {[0, random(M), M], [], [-1, M + 1]}; values('Float32') -> E = (1 bsl 8) - 2, F = (1 bsl 23) - 1, <> = <<0:1, E:8, F:23>>, <> = <<1:1, E:8, F:23>>, {[0.0, infinity, '-infinity', Mx, Mn], [], [0]}; values('Float64') -> E = (1 bsl 11) - 2, F = (1 bsl 52) - 1, <> = <<0:1, E:11, F:52>>, <> = <<1:1, E:11, F:52>>, {[0.0, infinity, '-infinity', Mx, Mn], [], [0]}; values('Address') -> {[{255,0,random(16#FF),1}, {65535,0,0,random(16#FFFF),0,0,0,1}], [], [{256,0,0,1}, {65536,0,0,0,0,0,0,1}]}; values('DiameterIdentity') -> {["x", "diameter.com"], [], [""]}; values('DiameterURI') -> {[], ["aaa" ++ S ++ "://diameter.se" ++ P ++ Tr ++ Pr || S <- ["", "s"], P <- ["", ":1234"], Tr <- ["" | [";transport=" ++ X || X <- ["tcp", "sctp", "udp"]]], Pr <- ["" | [";protocol=" ++ X || X <- ["diameter","radius","tacacs+"]]]], []}; values(T) when T == 'IPFilterRule'; T == 'QoSFilterRule' -> {["deny in 0 from 127.0.0.1 to 10.0.0.1"], [], []}; %% RFC 3629 defines the UTF-8 encoding of U+0000 through U+10FFFF with the %% exception of U+D800 through U+DFFF. values('UTF8String') -> S = "ᚠᚢᚦᚨᚱᚲ", B = unicode:characters_to_binary(S), {[[], S, lists:seq(0,16#1FF), [0,16#D7FF,16#E000,16#10FFFF], [random(16#D7FF), random(16#E000,16#10FFFF)]], [B, [B, S, hd(S)], [S, B]], [[-1], [16#D800], [16#DFFF], [16#110000]]}; values('Time') -> {[{{1968,1,20},{3,14,8}}, %% 19000101T000000 + 1 bsl 31 {date(), time()}, {{2036,2,7},{6,28,15}}, {{2036,2,7},{6,28,16}}, %% 19000101T000000 + 2 bsl 31 {{2104,2,26},{9,42,23}}], [], [{{1968,1,20},{3,14,7}}, {{2104,2,26},{9,42,24}}]}. %% 19000101T000000 + 3 bsl 31 %% values/3 %% %% Return list or enumerations of values for a given AVP. Can be %% wrapped as for values/1. values('Enumerated', Name, Mod) -> {_Name, Vals} = lists:keyfind(?S(Name), 1, types(enum, Mod)), {lists:map(fun({_,N}) -> N end, Vals), [], []}; values('Grouped', Name, Mod) -> Rname = Mod:name2rec(Name), Rec = Mod:'#new-'(Rname), Avps = Mod:'#info-'(Rname, fields), Enum = diameter_enum:combine(lists:map(fun({Vs,_,_}) -> to_enum(Vs) end, [values(F, Mod) || F <- Avps])), {[], diameter_enum:append(group(Mod, Name, Rec, Avps, Enum)), []}; values(_, 'Framed-IP-Address', _) -> {[{127,0,0,1}], [], []}; values(Type, _, _) -> values(Type). to_enum(Vs) when is_list(Vs) -> diameter_enum:new(Vs); to_enum(E) -> E. %% values/2 values('AVP', _) -> {[#diameter_avp{code = 0, data = <<0>>}], [], []}; values(Name, Mod) -> Avps = types(avp_types, Mod), {_Name, _Code, Type, _Flags} = lists:keyfind(?S(Name), 1, Avps), values(?A(Type), Name, Mod). %% group/5 %% %% Pack four variants of group values: tagged list containing all %% values, the corresponding record, a minimal tagged list and the %% coresponding record. group(Mod, Name, Rec, Avps, Enum) -> lists:map(fun(B) -> group(Mod, Name, Rec, Avps, Enum, B) end, [{A,R} || A <- ?BOOL, R <- ?BOOL]). group(Mod, Name, Rec, Avps, Enum, B) -> diameter_enum:map(fun(Vs) -> g(Mod, Name, Rec, Avps, Vs, B) end, Enum). g(Mod, Name, Rec, Avps, Values, {All, AsRec}) -> {Tagged, []} = lists:foldl(fun(N, {A, [V|Vs]}) -> {pack(All, Mod:avp_arity(Name, N), N, V, A), Vs} end, {[], Values}, Avps), g(AsRec, Mod, Tagged, Rec). g(true, Mod, Vals, Rec) -> Mod:'#set-'(Vals, Rec); g(false, _, Vals, _) -> Vals. pack(true, Arity, Avp, Value, Acc) -> [all(Arity, Avp, Value) | Acc]; pack(false, Arity, Avp, Value, Acc) -> min(Arity, Avp, Value, Acc). all(Mod, Name, Avp, V) -> all(Mod:avp_arity(Name, Avp), Avp, V). all(1, Avp, V) -> {Avp, V}; all({0,'*'}, Avp, V) -> a(1, Avp, V); all({N,'*'}, Avp, V) -> a(N, Avp, V); all({_,N}, Avp, V) -> a(N, Avp, V). a(N, Avp, V) when N /= 0 -> {Avp, lists:duplicate(N,V)}. min(Mod, Name, Avp, V, Acc) -> min(Mod:avp_arity(Name, Avp), Avp, V, Acc). min(1, Avp, V, Acc) -> [{Avp, V} | Acc]; min({0,_}, _, _, Acc) -> Acc; min({N,_}, Avp, V, Acc) -> [{Avp, lists:duplicate(N,V)} | Acc]. %% types/2 types(T, Mod) -> types(T, retag(T), Mod). types(T, IT, Mod) -> Dict = dict(Mod), fetch(T, Dict) ++ lists:flatmap(fun({_,As}) -> As end, fetch(IT, Dict)). %% random/[12] random(M) -> random(0,M). random(Mn,Mx) -> seed(get({?MODULE, seed})), Mn + random:uniform(Mx - Mn + 1) - 1. seed(undefined) -> put({?MODULE, seed}, true), random:seed(now()); seed(true) -> ok. %% run/1 %% %% Unravel nested badmatches resulting from [] matches on calls to %% run/1 to make for more readable failures. run(L) -> lists:flatmap(fun flatten/1, diameter_util:run(L)). flatten({_, {{badmatch, [{_, {{badmatch, _}, _}} | _] = L}, _}}) -> L; flatten(T) -> [T]. %% dict/1 dict(Mod) -> tl(Mod:dict()).