diff options
Diffstat (limited to 'lib/diameter/src/base/diameter_traffic.erl')
| -rw-r--r-- | lib/diameter/src/base/diameter_traffic.erl | 93 |
1 files changed, 62 insertions, 31 deletions
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl index 5fac61f416..280d09d7e8 100644 --- a/lib/diameter/src/base/diameter_traffic.erl +++ b/lib/diameter/src/base/diameter_traffic.erl @@ -129,6 +129,11 @@ incr(Dir, #diameter_header{} = H, TPid, Dict) -> %% incr_error/4 %% --------------------------------------------------------------------------- +%% Identify messages using the application dictionary, not the encode +%% dictionary, which may differ in the case of answer-message. +incr_error(Dir, T, Pid, {_Dict, AppDict}) -> + incr_error(Dir, T, Pid, AppDict); + %% Decoded message without errors. incr_error(recv, #diameter_packet{errors = []}, _, _) -> ok; @@ -169,7 +174,7 @@ incr_error(Dir, Id, TPid) -> incr_rc(Dir, Pkt, TPid, Dict0) -> try - incr_rc(Dir, Pkt, Dict0, TPid, Dict0) + incr_result(Dir, Pkt, TPid, {Dict0, Dict0, Dict0}) catch exit: {E,_} when E == no_result_code; E == invalid_error_bit -> @@ -471,7 +476,7 @@ send_A({Caps, Pkt}, TPid, Dict0, _RecvData) -> %% unsupported application #diameter_packet{errors = [RC|_]} = Pkt, send_A(answer_message(RC, Caps, Dict0, Pkt), TPid, - Dict0, + {Dict0, Dict0}, Pkt, [], []); @@ -479,7 +484,7 @@ send_A({Caps, Pkt}, TPid, Dict0, _RecvData) -> %% unsupported application send_A({Caps, Pkt, App, {T, EvalPktFs, EvalFs}}, TPid, Dict0, RecvData) -> send_A(answer(T, Caps, Pkt, App, Dict0, RecvData), TPid, - Dict0, + {App#diameter_app.dictionary, Dict0}, Pkt, EvalPktFs, EvalFs); @@ -489,8 +494,8 @@ send_A(_, _, _, _) -> %% send_A/6 -send_A(T, TPid, Dict0, ReqPkt, EvalPktFs, EvalFs) -> - reply(T, TPid, Dict0, EvalPktFs, ReqPkt), +send_A(T, TPid, DictT, ReqPkt, EvalPktFs, EvalFs) -> + reply(T, TPid, DictT, EvalPktFs, ReqPkt), lists:foreach(fun diameter_lib:eval/1, EvalFs). %% answer/6 @@ -648,32 +653,32 @@ is_loop(Code, Vid, OH, Dict0, Avps) -> %% reply/5 %% Local answer ... -reply({Dict, Ans}, TPid, Dict0, Fs, ReqPkt) -> - reply(Ans, Dict, TPid, Dict0, Fs, ReqPkt); +reply({Dict, Ans}, TPid, {AppDict, Dict0}, Fs, ReqPkt) -> + local(Ans, TPid, {Dict, AppDict, Dict0}, Fs, ReqPkt); %% ... or relayed. reply(#diameter_packet{} = Pkt, TPid, _Dict0, Fs, _ReqPkt) -> eval_packet(Pkt, Fs), send(TPid, Pkt). -%% reply/6 +%% local/5 %% %% Send a locally originating reply. %% Skip the setting of Result-Code and Failed-AVP's below. This is %% undocumented and shouldn't be relied on. -reply([Msg], Dict, TPid, Dict0, Fs, ReqPkt) +local([Msg], TPid, DictT, Fs, ReqPkt) when is_list(Msg); is_tuple(Msg) -> - reply(Msg, Dict, TPid, Dict0, Fs, ReqPkt#diameter_packet{errors = []}); + local(Msg, TPid, DictT, Fs, ReqPkt#diameter_packet{errors = []}); -reply(Msg, Dict, TPid, Dict0, Fs, ReqPkt) -> - Pkt = encode(Dict, +local(Msg, TPid, {Dict, AppDict, Dict0} = DictT, Fs, ReqPkt) -> + Pkt = encode({Dict, AppDict}, TPid, reset(make_answer_packet(Msg, ReqPkt), Dict, Dict0), Fs), - incr(send, Pkt, TPid, Dict), - incr_rc(send, Pkt, Dict, TPid, Dict0), %% count outgoing + incr(send, Pkt, TPid, AppDict), + incr_result(send, Pkt, TPid, DictT), %% count outgoing send(TPid, Pkt). %% reset/3 @@ -1038,29 +1043,29 @@ find(Pred, [H|T]) -> %% code, the missing vendor id, and a zero filled payload of the minimum %% required length for the omitted AVP will be added. -%% incr_rc/5 +%% incr_result/5 %% %% Increment a stats counter for result codes in incoming and outgoing %% answers. %% Outgoing message as binary: don't count. (Sending binaries is only %% partially supported.) -incr_rc(_, #diameter_packet{msg = undefined = No}, _, _, _) -> +incr_result(_, #diameter_packet{msg = undefined = No}, _, _) -> No; %% Incoming or outgoing. Outgoing with encode errors never gets here %% since encode fails. -incr_rc(Dir, Pkt, Dict, TPid, Dict0) -> +incr_result(Dir, Pkt, TPid, {Dict, AppDict, Dict0}) -> #diameter_packet{header = #diameter_header{is_error = E} = Hdr, msg = Msg, errors = Es} = Pkt, - Id = msg_id(Hdr, Dict), + Id = msg_id(Hdr, AppDict), %% Count incoming decode errors. - recv /= Dir orelse [] == Es orelse incr_error(Dir, Id, TPid, Dict), + recv /= Dir orelse [] == Es orelse incr_error(Dir, Id, TPid, AppDict), %% Exit on a missing result code. T = rc_counter(Dict, Msg), @@ -1074,12 +1079,27 @@ incr_rc(Dir, Pkt, Dict, TPid, Dict0) -> incr(TPid, {Id, Dir, Ctr}), Ctr. -%% Only count on known keeps so as not to be vulnerable to attack: -%% there are 2^32 (application ids) * 2^24 (command codes) * 2 (R-bits) -%% = 2^57 Ids for an attacker to choose from. +%% msg_id/2 + +msg_id(#diameter_packet{header = H}, Dict) -> + msg_id(H, Dict); + +%% Only count on known keys so as not to be vulnerable to attack: +%% there are 2^32 (application ids) * 2^24 (command codes) = 2^56 +%% pairs for an attacker to choose from. msg_id(Hdr, Dict) -> {_ApplId, Code, R} = Id = diameter_codec:msg_id(Hdr), - choose('' == Dict:msg_name(Code, 0 == R), unknown, Id). + case Dict:msg_name(Code, 0 == R) of + '' -> + unknown(Dict:id(), R); + _ -> + Id + end. + +unknown(?APP_ID_RELAY, R) -> + {relay, R}; +unknown(_, _) -> + unknown. %% No E-bit: can't be 3xxx. is_result(RC, false, _Dict0) -> @@ -1396,6 +1416,7 @@ send_R(Pkt0, packet = Pkt0}, try + incr(send, Pkt, TPid, Dict), TRef = send_request(TPid, Pkt, Req, SvcName, Timeout), Pid ! Ref, %% tell caller a send has been attempted handle_answer(SvcName, @@ -1431,14 +1452,14 @@ handle_answer(SvcName, App, {error, Req, Reason}) -> handle_error(App, Req, Reason, SvcName); handle_answer(SvcName, - #diameter_app{dictionary = Dict, + #diameter_app{dictionary = AppDict, id = Id} = App, {answer, Req, Dict0, Pkt}) -> - Mod = dict(Dict, Dict0, Pkt), - handle_A(errors(Id, diameter_codec:decode(Mod, Pkt)), + Dict = dict(AppDict, Dict0, Pkt), + handle_A(errors(Id, diameter_codec:decode({Dict, AppDict}, Pkt)), SvcName, - Mod, + Dict, Dict0, App, Req). @@ -1448,10 +1469,12 @@ handle_answer(SvcName, %% want to examine the answer? handle_A(Pkt, SvcName, Dict, Dict0, App, #request{transport = TPid} = Req) -> - incr(recv, Pkt, TPid, Dict), + AppDict = App#diameter_app.dictionary, + + incr(recv, Pkt, TPid, AppDict), try - incr_rc(recv, Pkt, Dict, TPid, Dict0) %% count incoming + incr_result(recv, Pkt, TPid, {Dict, AppDict, Dict0}) %% count incoming of _ -> answer(Pkt, SvcName, App, Req) catch @@ -1468,6 +1491,8 @@ handle_A(Pkt, SvcName, Dict, Dict0, App, #request{transport = TPid} = Req) -> answer(Pkt#diameter_packet{errors = [E|Es]}, SvcName, App, Req) end. +%% answer/4 + answer(Pkt, SvcName, #diameter_app{module = ModX, @@ -1568,13 +1593,18 @@ encode(Dict, TPid, Pkt, Fs) -> %% an encoded binary. This isn't the usual case and doesn't properly %% support retransmission but is useful for test. +encode(Dict, TPid, Pkt) + when is_atom(Dict) -> + encode({Dict, Dict}, TPid, Pkt); + %% A message to be encoded. -encode(Dict, TPid, #diameter_packet{bin = undefined} = Pkt) -> +encode(DictT, TPid, #diameter_packet{bin = undefined} = Pkt) -> + {Dict, AppDict} = DictT, try diameter_codec:encode(Dict, Pkt) catch exit: {diameter_codec, encode, T} = Reason -> - incr_error(send, T, TPid, Dict), + incr_error(send, T, TPid, AppDict), exit(Reason) end; @@ -1683,6 +1713,7 @@ resend_request(Pkt0, caps = Caps}, ?LOG(retransmission, Pkt#diameter_packet.header), + incr(TPid, {msg_id(Pkt, Dict), send, retransmission}), TRef = send_request(TPid, Pkt, Req, SvcName, Tmo), {TRef, Req}. |