diff options
| -rw-r--r-- | lib/diameter/include/diameter_gen.hrl | 57 | ||||
| -rw-r--r-- | lib/diameter/src/base/diameter_codec.erl | 18 | ||||
| -rw-r--r-- | lib/diameter/src/base/diameter_types.erl | 2 | ||||
| -rw-r--r-- | lib/diameter/test/diameter_codec_SUITE.erl | 188 |
4 files changed, 243 insertions, 22 deletions
diff --git a/lib/diameter/include/diameter_gen.hrl b/lib/diameter/include/diameter_gen.hrl index bc25f7d472..8272904856 100644 --- a/lib/diameter/include/diameter_gen.hrl +++ b/lib/diameter/include/diameter_gen.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2010-2014. All Rights Reserved. +%% Copyright Ericsson AB 2010-2015. 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 @@ -25,6 +25,9 @@ -define(THROW(T), throw({?MODULE, T})). +%% Tag common to generated dictionaries. +-define(TAG, diameter_gen). + %% Key to a value in the process dictionary that determines whether or %% not an unrecognized AVP setting the M-bit should be regarded as an %% error or not. See is_strict/0. @@ -48,13 +51,20 @@ %% dictionary. putr(K,V) -> - put({?MODULE, K}, V). + put({?TAG, K}, V). getr(K) -> - get({?MODULE, K}). + case get({?TAG, K}) of + undefined -> + V = erase({?MODULE, K}), %% written in old code + V == undefined orelse putr(K,V), + V; + V -> + V + end. eraser(K) -> - erase({?MODULE, K}). + erase({?TAG, K}). %% --------------------------------------------------------------------------- %% # encode_avps/2 @@ -313,12 +323,20 @@ d(Name, Avp, Acc) -> %% decode is packed into 'AVP'. Mod = dict(Failed), %% Dictionary to decode in. + %% On decode, a Grouped AVP is represented as a #diameter_avp{} + %% list with AVP as head and component AVPs as tail. On encode, + %% data can be a list of component AVPs. + try Mod:avp(decode, Data, AvpName) of V -> {Avps, T} = Acc, {H, A} = ungroup(V, Avp), {[H | Avps], pack_avp(Name, A, T)} catch + throw: {?TAG, {grouped, RC, ComponentAvps}} -> + {Avps, {Rec, Errors}} = Acc, + A = trim(Avp), + {[[A | trim(ComponentAvps)] | Avps], {Rec, [{RC, A} | Errors]}}; error: Reason -> d(undefined == Failed orelse is_failed(), Reason, @@ -338,6 +356,10 @@ d(Name, Avp, Acc) -> trim(#diameter_avp{data = <<0:1, Bin/binary>>} = Avp) -> Avp#diameter_avp{data = Bin}; +trim(Avps) + when is_list(Avps) -> + lists:map(fun trim/1, Avps); + trim(Avp) -> Avp. @@ -582,22 +604,37 @@ value(_, Avp) -> %% # grouped_avp/3 %% --------------------------------------------------------------------------- --spec grouped_avp(decode, avp_name(), binary()) +-spec grouped_avp(decode, avp_name(), bitstring()) -> {avp_record(), [avp()]}; (encode, avp_name(), avp_record() | avp_values()) -> binary() | no_return(). +%% Length error induced by diameter_codec:collect_avps/1. +grouped_avp(decode, _Name, <<0:1, _/binary>>) -> + throw({?TAG, {grouped, 5014, []}}); + grouped_avp(decode, Name, Data) -> - {Rec, Avps, []} = decode_avps(Name, diameter_codec:collect_avps(Data)), - {Rec, Avps}; -%% A failed match here will result in 5004. Note that this is the only -%% AVP type that doesn't just return the decoded record, also -%% returning the list of component AVP's. + grouped_decode(Name, diameter_codec:collect_avps(Data)); grouped_avp(encode, Name, Data) -> encode_avps(Name, Data). +%% grouped_decode/2 +%% +%% Note that Grouped is the only AVP type that doesn't just return a +%% decoded value, also returning the list of component diameter_avp +%% records. + +grouped_decode(_Name, {Error, Acc}) -> + {RC, Avp} = Error, + throw({?TAG, {grouped, RC, [Avp | Acc]}}); + +grouped_decode(Name, ComponentAvps) -> + {Rec, Avps, Es} = decode_avps(Name, ComponentAvps), + [] == Es orelse throw({?TAG, {grouped, 5004, Avps}}), %% decode failure + {Rec, Avps}. + %% --------------------------------------------------------------------------- %% # empty_group/1 %% --------------------------------------------------------------------------- diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl index f9bc44cf61..b4ecb63961 100644 --- a/lib/diameter/src/base/diameter_codec.erl +++ b/lib/diameter/src/base/diameter_codec.erl @@ -564,14 +564,14 @@ split_data(Bin, Len) -> <<Data:Len/binary, _:Pad/binary, Rest/binary>> -> {Data, Rest}; _ -> - %% Header length points past the end of the message. As - %% stated in the 6733 text above, it's sufficient to - %% return a zero-filled minimal payload if this is a - %% request. Do this (in cases that we know the type) by - %% inducing a decode failure and letting the dictionary's - %% decode (in diameter_gen) deal with it. Here we don't - %% know type. If the type isn't known, then the decode - %% just strips the extra bit. + %% Header length points past the end of the message, or + %% doesn't span the header. As stated in the 6733 text + %% above, it's sufficient to return a zero-filled minimal + %% payload if this is a request. Do this (in cases that we + %% know the type) by inducing a decode failure and letting + %% the dictionary's decode (in diameter_gen) deal with it. + %% Here we don't know type. If the type isn't known, then + %% the decode just strips the extra bit. {<<0:1, Bin/binary>>, <<>>} end. @@ -585,6 +585,8 @@ split_data(Bin, Len) -> %% dictionary doesn't know about specific AVP's. %% Grouped AVP whose components need packing ... +pack_avp([#diameter_avp{} = A | Avps]) -> + pack_avp(A#diameter_avp{data = Avps}); pack_avp(#diameter_avp{data = [#diameter_avp{} | _] = Avps} = A) -> pack_avp(A#diameter_avp{data = encode_avps(Avps)}); diff --git a/lib/diameter/src/base/diameter_types.erl b/lib/diameter/src/base/diameter_types.erl index ca3338be5f..442d90c98b 100644 --- a/lib/diameter/src/base/diameter_types.erl +++ b/lib/diameter/src/base/diameter_types.erl @@ -75,7 +75,7 @@ %% message indicating this error MUST include the offending AVPs %% within a Failed-AVP AVP. %% --define(INVALID_LENGTH(Bin), erlang:error({'DIAMETER', 5014, Bin})). +-define(INVALID_LENGTH(Bitstr), erlang:error({'DIAMETER', 5014, Bitstr})). %% ------------------------------------------------------------------------- %% 3588, 4.2. Basic AVP Data Formats diff --git a/lib/diameter/test/diameter_codec_SUITE.erl b/lib/diameter/test/diameter_codec_SUITE.erl index cd8ca41f66..64ea90554d 100644 --- a/lib/diameter/test/diameter_codec_SUITE.erl +++ b/lib/diameter/test/diameter_codec_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2010-2013. All Rights Reserved. +%% Copyright Ericsson AB 2010-2015. 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 @@ -29,6 +29,9 @@ -export([suite/0, all/0, + groups/0, + init_per_group/2, + end_per_group/2, init_per_testcase/2, end_per_testcase/2]). @@ -36,9 +39,13 @@ -export([base/1, gen/1, lib/1, - unknown/1]). + unknown/1, + success/1, + grouped_error/1, + failed_error/1]). -include("diameter_ct.hrl"). +-include("diameter.hrl"). -define(L, atom_to_list). @@ -48,7 +55,19 @@ suite() -> [{timetrap, {seconds, 10}}]. all() -> - [base, gen, lib, unknown]. + [base, gen, lib, unknown, {group, recode}]. + +groups() -> + [{recode, [], [success, + grouped_error, + failed_error]}]. + +init_per_group(recode, Config) -> + ok = diameter:start(), + Config. + +end_per_group(_, _) -> + ok = diameter:stop(). init_per_testcase(gen, Config) -> [{application, ?APP, App}] = diameter_util:consult(?APP, app), @@ -98,3 +117,166 @@ compile(File) -> compile(File, Opts) -> compile:file(File, [return | Opts]). + +%% =========================================================================== + +%% Ensure a Grouped AVP is represented by a list in the avps field. +success(_) -> + Avps = [{295, <<1:32>>}, %% Termination-Cause + {284, [{280, "Proxy-Host"}, %% Proxy-Info + {33, "Proxy-State"}, %% + {295, <<2:32>>}]}], %% Termination-Cause + #diameter_packet{avps = [#diameter_avp{code = 295, + value = 1, + data = <<1:32>>}, + [#diameter_avp{code = 284}, + #diameter_avp{code = 280}, + #diameter_avp{code = 33}, + #diameter_avp{code = 295, + value = 2, + data = <<2:32>>}]], + errors = []} + = str(recode(str(Avps))). + +%% =========================================================================== + +%% Ensure a Grouped AVP is represented by a list in the avps field +%% even in the case of a decode error on a component AVP. +grouped_error(_) -> + Avps = [{295, <<1:32>>}, %% Termination-Cause + {284, [{295, <<0:32>>}, %% Proxy-Info, Termination-Cause + {280, "Proxy-Host"}, + {33, "Proxy-State"}]}], + #diameter_packet{avps = [#diameter_avp{code = 295, + value = 1, + data = <<1:32>>}, + [#diameter_avp{code = 284}, + #diameter_avp{code = 295, + value = undefined, + data = <<0:32>>}, + #diameter_avp{code = 280}, + #diameter_avp{code = 33}]], + errors = [{5004, #diameter_avp{code = 284}}]} + = str(recode(str(Avps))). + +%% =========================================================================== + +%% Ensure that a failed decode in Failed-AVP is acceptable, and that +%% the component AVPs are decoded if possible. +failed_error(_) -> + Avps = [{279, [{295, <<0:32>>}, %% Failed-AVP, Termination-Cause + {258, <<1:32>>}, %% Auth-Application-Id + {284, [{280, "Proxy-Host"}, %% Proxy-Info + {33, "Proxy-State"}, + {295, <<0:32>>}, %% Termination-Cause, invalid + {258, <<2:32>>}]}]}], %% Auth-Application-Id + #diameter_packet{avps = [[#diameter_avp{code = 279}, + #diameter_avp{code = 295, + value = undefined, + data = <<0:32>>}, + #diameter_avp{code = 258, + value = 1, + data = <<1:32>>}, + [#diameter_avp{code = 284}, + #diameter_avp{code = 280}, + #diameter_avp{code = 33}, + #diameter_avp{code = 295, + value = undefined}, + #diameter_avp{code = 258, + value = 2, + data = <<2:32>>}]]], + errors = []} + = sta(recode(sta(Avps))). + +%% =========================================================================== + +%% str/1 + +str(#diameter_packet{avps = [#diameter_avp{code = 263}, + #diameter_avp{code = 264}, + #diameter_avp{code = 296}, + #diameter_avp{code = 283}, + #diameter_avp{code = 258, + value = 0} + | T]} + = Pkt) -> + Pkt#diameter_packet{avps = T}; + +str(Avps) -> + OH = "diameter.erlang.org", + OR = "erlang.org", + DR = "example.com", + Sid = "diameter.erlang.org;123;456", + + [#diameter_header{version = 1, + cmd_code = 275, %% STR + is_request = true, + application_id = 0, + hop_by_hop_id = 17, + end_to_end_id = 42, + is_proxiable = false, + is_error = false, + is_retransmitted = false} + | avp([{263, Sid}, %% Session-Id + {264, OH}, %% Origin-Host + {296, OR}, %% Origin-Realm + {283, DR}, %% Destination-Realm + {258, <<0:32>>}] %% Auth-Application-Id + ++ Avps)]. + +%% sta/1 + +sta(#diameter_packet{avps = [#diameter_avp{code = 263}, + #diameter_avp{code = 268}, + #diameter_avp{code = 264}, + #diameter_avp{code = 296}, + #diameter_avp{code = 278, + value = 4} + | T]} + = Pkt) -> + Pkt#diameter_packet{avps = T}; + +sta(Avps) -> + OH = "diameter.erlang.org", + OR = "erlang.org", + Sid = "diameter.erlang.org;123;456", + + [#diameter_header{version = 1, + cmd_code = 275, %% STA + is_request = false, + application_id = 0, + hop_by_hop_id = 17, + end_to_end_id = 42, + is_proxiable = false, + is_error = false, + is_retransmitted = false} + | avp([{263, Sid}, %% Session-Id + {268, <<2002:32>>}, %% Result-Code + {264, OH}, %% Origin-Host + {296, OR}, %% Origin-Realm + {278, <<4:32>>}] %% Origin-State-Id + ++ Avps)]. + +avp({Code, Data}) -> + #diameter_avp{code = Code, + data = avp(Data)}; + +avp(#diameter_avp{} = A) -> + A; + +avp([{_,_} | _] = Avps) -> + lists:map(fun avp/1, Avps); + +avp(V) -> + V. + +%% recode/1 + +recode(Msg) -> + recode(Msg, diameter_gen_base_rfc6733). + +recode(#diameter_packet{} = Pkt, Dict) -> + diameter_codec:decode(Dict, diameter_codec:encode(Dict, Pkt)); + +recode(Msg, Dict) -> + recode(#diameter_packet{msg = Msg}, Dict). |