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-rw-r--r--lib/diameter/examples/code/client.erl3
-rw-r--r--lib/diameter/examples/code/client_cb.erl14
-rw-r--r--lib/diameter/examples/code/redirect_cb.erl8
-rw-r--r--lib/diameter/examples/code/relay_cb.erl8
-rw-r--r--lib/diameter/examples/code/server_cb.erl53
-rw-r--r--lib/diameter/include/diameter_gen.hrl117
-rw-r--r--lib/diameter/src/base/diameter_codec.erl109
-rw-r--r--lib/diameter/src/base/diameter_lib.erl56
-rw-r--r--lib/diameter/src/base/diameter_peer_fsm.erl127
-rw-r--r--lib/diameter/src/base/diameter_service.erl48
-rw-r--r--lib/diameter/src/base/diameter_traffic.erl130
-rw-r--r--lib/diameter/src/base/diameter_watchdog.erl19
-rw-r--r--lib/diameter/test/diameter_traffic_SUITE.erl85
13 files changed, 481 insertions, 296 deletions
diff --git a/lib/diameter/examples/code/client.erl b/lib/diameter/examples/code/client.erl
index bfe71b0e56..6606ac254d 100644
--- a/lib/diameter/examples/code/client.erl
+++ b/lib/diameter/examples/code/client.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -72,6 +72,7 @@
{'Product-Name', "Client"},
{'Auth-Application-Id', [?DIAMETER_APP_ID_COMMON]},
{application, [{alias, ?APP_ALIAS},
+ {answer_errors, discard},
{dictionary, ?DIAMETER_DICT_COMMON},
{module, ?CALLBACK_MOD}]}]).
diff --git a/lib/diameter/examples/code/client_cb.erl b/lib/diameter/examples/code/client_cb.erl
index ee3dcb2fec..843cdd9262 100644
--- a/lib/diameter/examples/code/client_cb.erl
+++ b/lib/diameter/examples/code/client_cb.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -77,23 +77,11 @@ prepare_retransmit(Packet, SvcName, Peer) ->
%% handle_answer/4
-%% Since client.erl has detached the call when using the list
-%% encoding and not otherwise, output to the terminal in the
-%% the former case, return in the latter.
-
-handle_answer(#diameter_packet{msg = Msg}, Request, _SvcName, _Peer)
- when is_list(Request) ->
- io:format("answer: ~p~n", [Msg]);
-
handle_answer(#diameter_packet{msg = Msg}, _Request, _SvcName, _Peer) ->
{ok, Msg}.
%% handle_error/4
-handle_error(Reason, Request, _SvcName, _Peer)
- when is_list(Request) ->
- io:format("error: ~p~n", [Reason]);
-
handle_error(Reason, _Request, _SvcName, _Peer) ->
{error, Reason}.
diff --git a/lib/diameter/examples/code/redirect_cb.erl b/lib/diameter/examples/code/redirect_cb.erl
index 69836774a1..8d98b0d2df 100644
--- a/lib/diameter/examples/code/redirect_cb.erl
+++ b/lib/diameter/examples/code/redirect_cb.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -34,12 +34,10 @@
-define(UNEXPECTED, erlang:error({unexpected, ?MODULE, ?LINE})).
-peer_up(_SvcName, {PeerRef, _}, State) ->
- io:format("up: ~p~n", [PeerRef]),
+peer_up(_SvcName, _Peer, State) ->
State.
-peer_down(_SvcName, {PeerRef, _}, State) ->
- io:format("down: ~p~n", [PeerRef]),
+peer_down(_SvcName, _Peer, State) ->
State.
pick_peer(_, _, _SvcName, _State) ->
diff --git a/lib/diameter/examples/code/relay_cb.erl b/lib/diameter/examples/code/relay_cb.erl
index 9f9cd8d5ae..68798014e6 100644
--- a/lib/diameter/examples/code/relay_cb.erl
+++ b/lib/diameter/examples/code/relay_cb.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -32,12 +32,10 @@
handle_error/5,
handle_request/3]).
-peer_up(_SvcName, {PeerRef, _}, State) ->
- io:format("up: ~p~n", [PeerRef]),
+peer_up(_SvcName, _Peer, State) ->
State.
-peer_down(_SvcName, {PeerRef, _}, State) ->
- io:format("down: ~p~n", [PeerRef]),
+peer_down(_SvcName, _Peer, State) ->
State.
%% Returning 'relay' from handle_request causes diameter to resend the
diff --git a/lib/diameter/examples/code/server_cb.erl b/lib/diameter/examples/code/server_cb.erl
index 0f6eb32ed6..9d8d395d06 100644
--- a/lib/diameter/examples/code/server_cb.erl
+++ b/lib/diameter/examples/code/server_cb.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -38,12 +38,10 @@
-define(UNEXPECTED, erlang:error({unexpected, ?MODULE, ?LINE})).
-peer_up(_SvcName, {PeerRef, _}, State) ->
- io:format("up: ~p~n", [PeerRef]),
+peer_up(_SvcName, _Peer, State) ->
State.
-peer_down(_SvcName, {PeerRef, _}, State) ->
- io:format("down: ~p~n", [PeerRef]),
+peer_down(_SvcName, _Peer, State) ->
State.
pick_peer(_, _, _SvcName, _State) ->
@@ -68,10 +66,13 @@ handle_request(#diameter_packet{msg = Req, errors = []}, _SvcName, {_, Caps})
origin_realm = {OR,_}}
= Caps,
#diameter_base_RAR{'Session-Id' = Id,
- 'Re-Auth-Request-Type' = RT}
+ 'Re-Auth-Request-Type' = Type}
= Req,
- {reply, answer(RT, Id, OH, OR)};
+ {reply, #diameter_base_RAA{'Result-Code' = rc(Type),
+ 'Origin-Host' = OH,
+ 'Origin-Realm' = OR,
+ 'Session-Id' = Id}};
%% ... or one that wasn't. 3xxx errors are answered by diameter itself
%% but these are 5xxx errors for which we must contruct a reply.
@@ -84,32 +85,18 @@ handle_request(#diameter_packet{msg = Req}, _SvcName, {_, Caps})
#diameter_base_RAR{'Session-Id' = Id}
= Req,
- Ans = #diameter_base_RAA{'Origin-Host' = OH,
- 'Origin-Realm' = OR,
- 'Session-Id' = Id},
+ {reply, #diameter_base_RAA{'Origin-Host' = OH,
+ 'Origin-Realm' = OR,
+ 'Session-Id' = Id}};
- {reply, Ans};
+%% Answer that any other message is unsupported.
+handle_request(#diameter_packet{}, _SvcName, _) ->
+ {answer_message, 3001}. %% DIAMETER_COMMAND_UNSUPPORTED
-%% Should really reply to other base messages that we don't support
-%% but simply discard them instead.
-handle_request(#diameter_packet{}, _SvcName, {_,_}) ->
- discard.
+%% Map Re-Auth-Request-Type to Result-Code just for the purpose of
+%% generating different answers.
-%% ---------------------------------------------------------------------------
-
-%% Answer using the record or list encoding depending on
-%% Re-Auth-Request-Type. This is just as an example. You would
-%% typically just choose one, and this has nothing to do with the how
-%% client.erl sends.
-
-answer(0, Id, OH, OR) ->
- #diameter_base_RAA{'Result-Code' = 2001, %% DIAMETER_SUCCESS
- 'Origin-Host' = OH,
- 'Origin-Realm' = OR,
- 'Session-Id' = Id};
-
-answer(_, Id, OH, OR) ->
- ['RAA', {'Result-Code', 5012}, %% DIAMETER_UNABLE_TO_COMPLY
- {'Origin-Host', OH},
- {'Origin-Realm', OR},
- {'Session-Id', Id}].
+rc(0) ->
+ 2001; %% DIAMETER_SUCCESS
+rc(_) ->
+ 5012. %% DIAMETER_UNABLE_TO_COMPLY
diff --git a/lib/diameter/include/diameter_gen.hrl b/lib/diameter/include/diameter_gen.hrl
index c8f706dc3e..7e91ce375f 100644
--- a/lib/diameter/include/diameter_gen.hrl
+++ b/lib/diameter/include/diameter_gen.hrl
@@ -30,6 +30,10 @@
%% error or not. See is_strict/0.
-define(STRICT_KEY, strict).
+%% Key that says whether or not we should do a best-effort decode
+%% within Failed-AVP.
+-define(FAILED_KEY, failed).
+
-type parent_name() :: atom(). %% parent = Message or AVP
-type parent_record() :: tuple(). %%
-type avp_name() :: atom().
@@ -286,15 +290,7 @@ decode(Name, 'AVP', Avp, Acc) ->
%% d/3
-%% Don't try to decode the value of a Failed-AVP component since it
-%% probably won't. Note that matching on 'Failed-AVP' assumes that
-%% this is the RFC AVP, with code 279. Strictly, this doesn't need to
-%% be the case, so we're assuming no one defines another Failed-AVP.
-d('Failed-AVP' = Name, Avp, Acc) ->
- decode_AVP(Name, Avp, Acc);
-
-%% Or try to decode.
-d(Name, Avp, {Avps, Acc}) ->
+d(Name, Avp, Acc) ->
#diameter_avp{name = AvpName,
data = Data,
type = Type,
@@ -307,51 +303,81 @@ d(Name, Avp, {Avps, Acc}) ->
%% value around through the entire decode. The solution here is
%% simple in comparison, both to implement and to understand.
- Reset = relax(Type, M),
+ Strict = relax(Type, M),
+ %% Use the process dictionary again to keep track of whether we're
+ %% decoding within Failed-AVP and should ignore decode errors
+ %% altogether.
+
+ Failed = relax(Name), %% Not AvpName or else a failed Failed-AVP
+ %% decode is packed into 'AVP'.
try avp(decode, Data, AvpName) of
V ->
+ {Avps, T} = Acc,
{H, A} = ungroup(V, Avp),
- {[H | Avps], pack_avp(Name, A, Acc)}
+ {[H | Avps], pack_avp(Name, A, T)}
catch
error: Reason ->
- %% Failures here won't be visible since they're a "normal"
- %% occurrence if the peer sends a faulty AVP that we need to
- %% respond sensibly to. Log the occurence for traceability,
- %% but the peer will also receive info in the resulting
- %% answer-message.
- diameter_lib:log({decode, failure},
- ?MODULE,
- ?LINE,
- {Reason, Avp, erlang:get_stacktrace()}),
- {Rec, Failed} = Acc,
- {[Avp|Avps], {Rec, [rc(Reason, Avp) | Failed]}}
+ d(undefined == Failed orelse is_failed(), Reason, Name, Avp, Acc)
after
- relax(Reset)
+ reset(?STRICT_KEY, Strict),
+ reset(?FAILED_KEY, Failed)
end.
+%% Ignore a decode error within Failed-AVP ...
+d(true, _, Name, Avp, Acc) ->
+ decode_AVP(Name, Avp, Acc);
+
+%% ... or not. Failures here won't be visible since they're a "normal"
+%% occurrence if the peer sends a faulty AVP that we need to respond
+%% sensibly to. Log the occurence for traceability, but the peer will
+%% also receive info in the resulting answer message.
+d(false, Reason, Name, Avp, {Avps, Acc}) ->
+ Stack = diameter_lib:get_stacktrace(),
+ diameter_lib:log(decode_error,
+ ?MODULE,
+ ?LINE,
+ {Reason, Name, Avp#diameter_avp.name, Stack}),
+ {Rec, Failed} = Acc,
+ {[Avp|Avps], {Rec, [rc(Reason, Avp) | Failed]}}.
+
%% Set false in the process dictionary as soon as we see a Grouped AVP
%% that doesn't set the M-bit, so that is_strict() can say whether or
%% not to ignore the M-bit on an encapsulated AVP.
relax('Grouped', M) ->
- V = getr(?STRICT_KEY),
- if V == undefined andalso not M ->
+ case getr(?STRICT_KEY) of
+ undefined when not M ->
putr(?STRICT_KEY, M);
- true ->
+ _ ->
false
end;
relax(_, _) ->
false.
-%% Reset strictness.
-relax(undefined) ->
- eraser(?STRICT_KEY);
-relax(false) ->
- ok.
-
is_strict() ->
false /= getr(?STRICT_KEY).
+%% Set true in the process dictionary as soon as we see Failed-AVP.
+%% Matching on 'Failed-AVP' assumes that this is the RFC AVP.
+%% Strictly, this doesn't need to be the case.
+relax('Failed-AVP') ->
+ case getr(?FAILED_KEY) of
+ undefined ->
+ putr(?FAILED_KEY, true);
+ true = Yes ->
+ Yes
+ end;
+relax(_) ->
+ is_failed().
+
+is_failed() ->
+ true == getr(?FAILED_KEY).
+
+reset(Key, undefined) ->
+ eraser(Key);
+reset(_, _) ->
+ ok.
+
%% decode_AVP/3
%%
%% Don't know this AVP: see if it can be packed in an 'AVP' field
@@ -410,6 +436,23 @@ pack_avp(_, Arity, Avp, Acc) ->
%% pack_AVP/3
+%% Length failure was induced because of a header/payload length
+%% mismatch. The AVP Length is reset to match the received data if
+%% this AVP is encoded in an answer message, since the length is
+%% computed.
+%%
+%% Data is a truncated header if command_code = undefined, otherwise
+%% payload bytes. The former is padded to the length of a header if
+%% the AVP reaches an outgoing encode in diameter_codec.
+%%
+%% RFC 6733 says that an AVP returned with 5014 can contain a minimal
+%% payload for the AVP's type, but in this case we don't know the
+%% type.
+
+pack_AVP(_, #diameter_avp{data = <<0:1, Data/binary>>} = Avp, Acc) ->
+ {Rec, Failed} = Acc,
+ {Rec, [{5014, Avp#diameter_avp{data = Data}} | Failed]};
+
pack_AVP(Name, #diameter_avp{is_mandatory = M} = Avp, Acc) ->
case pack_arity(Name, M) of
0 ->
@@ -422,7 +465,15 @@ pack_AVP(Name, #diameter_avp{is_mandatory = M} = Avp, Acc) ->
%% Give Failed-AVP special treatment since it'll contain any
%% unrecognized mandatory AVP's.
pack_arity(Name, M) ->
- case Name /= 'Failed-AVP' andalso M andalso is_strict() of
+ NF = Name /= 'Failed-AVP' andalso not is_failed(),
+ %% Not testing just Name /= 'Failed-AVP' means we're changing the
+ %% packing of AVPs nested within Failed-AVP, but the point of
+ %% ignoring errors within Failed-AVP is to decode as much as
+ %% possible, and failing because a mandatory AVP couldn't be
+ %% packed into a dedicated field defeats that point. Note that we
+ %% can't just test not is_failed() since this will be 'true' when
+ %% packing an unknown AVP directly within Failed-AVP.
+ case NF andalso M andalso is_strict() of
true ->
0;
false ->
diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl
index 9db3552286..06a4f5de64 100644
--- a/lib/diameter/src/base/diameter_codec.erl
+++ b/lib/diameter/src/base/diameter_codec.erl
@@ -70,18 +70,15 @@ encode(Mod, #diameter_packet{} = Pkt) ->
try
e(Mod, Pkt)
catch
- exit: {_, _, #diameter_header{}} = T ->
+ exit: {Reason, Stack, #diameter_header{} = H} = T ->
%% Exit with a header in the reason to let the caller
%% count encode errors.
- X = {?MODULE, encode, T},
- diameter_lib:error_report(X, {?MODULE, encode, [Mod, Pkt]}),
- exit(X);
+ ?LOG(encode_error, {Reason, Stack, H}),
+ exit({?MODULE, encode, T});
error: Reason ->
- %% Be verbose since a crash report may be truncated and
- %% encode errors are self-inflicted.
- X = {?MODULE, encode, {Reason, ?STACK}},
- diameter_lib:error_report(X, {?MODULE, encode, [Mod, Pkt]}),
- exit(X)
+ T = {Reason, diameter_lib:get_stacktrace()},
+ ?LOG(encode_error, T),
+ exit({?MODULE, encode, T})
end;
encode(Mod, Msg) ->
@@ -115,7 +112,7 @@ e(_, #diameter_packet{msg = [#diameter_header{} = Hdr | As]} = Pkt) ->
Avps/binary>>}
catch
error: Reason ->
- exit({Reason, ?STACK, Hdr})
+ exit({Reason, diameter_lib:get_stacktrace(), Hdr})
end;
e(Mod, #diameter_packet{header = Hdr0, msg = Msg} = Pkt) ->
@@ -147,7 +144,7 @@ e(Mod, #diameter_packet{header = Hdr0, msg = Msg} = Pkt) ->
Avps/binary>>}
catch
error: Reason ->
- exit({Reason, ?STACK, Hdr})
+ exit({Reason, diameter_lib:get_stacktrace(), Hdr})
end.
%% make_flags/2
@@ -240,7 +237,7 @@ rec2msg(Mod, Rec) ->
%% Unsuccessfully decoded AVPs will be placed in #diameter_packet.errors.
--spec decode(module(), #diameter_packet{} | bitstring())
+-spec decode(module(), #diameter_packet{} | binary())
-> #diameter_packet{}.
decode(Mod, Pkt) ->
@@ -274,34 +271,34 @@ decode(_, Mod, #diameter_packet{header = Hdr} = Pkt) ->
decode_avps(MsgName, Mod, Pkt, collect_avps(Pkt));
decode(Id, Mod, Bin)
- when is_bitstring(Bin) ->
+ when is_binary(Bin) ->
decode(Id, Mod, #diameter_packet{header = decode_header(Bin), bin = Bin}).
decode_avps(MsgName, Mod, Pkt, {E, Avps}) ->
- ?LOG(invalid, Pkt#diameter_packet.bin),
+ ?LOG(invalid_avp_length, Pkt#diameter_packet.header),
#diameter_packet{errors = Failed}
= P
= decode_avps(MsgName, Mod, Pkt, Avps),
P#diameter_packet{errors = [E | Failed]};
-decode_avps('', Mod, Pkt, Avps) -> %% unknown message ...
- ?LOG(unknown, {Mod, Pkt#diameter_packet.header}),
+decode_avps('', _, Pkt, Avps) -> %% unknown message ...
+ ?LOG(unknown_message, Pkt#diameter_packet.header),
Pkt#diameter_packet{avps = lists:reverse(Avps),
errors = [3001]}; %% DIAMETER_COMMAND_UNSUPPORTED
%% msg = undefined identifies this case.
decode_avps(MsgName, Mod, Pkt, Avps) -> %% ... or not
- {Rec, As, Failed} = Mod:decode_avps(MsgName, Avps),
- ?LOGC([] /= Failed, failed, {Mod, Failed}),
+ {Rec, As, Errors} = Mod:decode_avps(MsgName, Avps),
+ ?LOGC([] /= Errors, decode_errors, Pkt#diameter_packet.header),
Pkt#diameter_packet{msg = Rec,
- errors = Failed,
+ errors = Errors,
avps = As}.
%%% ---------------------------------------------------------------------------
%%% # decode_header/1
%%% ---------------------------------------------------------------------------
--spec decode_header(bitstring())
+-spec decode_header(binary())
-> #diameter_header{}
| false.
@@ -312,7 +309,7 @@ decode_header(<<Version:8,
ApplicationId:32,
HopByHopId:32,
EndToEndId:32,
- _/bitstring>>) ->
+ _/binary>>) ->
<<R:1, P:1, E:1, T:1, _:4>>
= CmdFlags,
%% 3588 (ch 3) says that reserved bits MUST be set to 0 and ignored
@@ -425,7 +422,7 @@ msg_id(#diameter_header{application_id = A,
is_request = R}) ->
{A, C, if R -> 1; true -> 0 end};
-msg_id(<<_:32, Rbit:1, _:7, CmdCode:24, ApplId:32, _/bitstring>>) ->
+msg_id(<<_:32, Rbit:1, _:7, CmdCode:24, ApplId:32, _/binary>>) ->
{ApplId, CmdCode, Rbit}.
%%% ---------------------------------------------------------------------------
@@ -436,17 +433,18 @@ msg_id(<<_:32, Rbit:1, _:7, CmdCode:24, ApplId:32, _/bitstring>>) ->
%% order in the binary. Note also that grouped avp's aren't unraveled,
%% only those at the top level.
--spec collect_avps(#diameter_packet{} | bitstring())
+-spec collect_avps(#diameter_packet{} | binary())
-> [Avp]
| {Error, [Avp]}
when Avp :: #diameter_avp{},
Error :: {5014, #diameter_avp{}}.
collect_avps(#diameter_packet{bin = Bin}) ->
- <<_:20/binary, Avps/bitstring>> = Bin,
+ <<_:20/binary, Avps/binary>> = Bin,
collect_avps(Avps);
-collect_avps(Bin) ->
+collect_avps(Bin)
+ when is_binary(Bin) ->
collect_avps(Bin, 0, []).
collect_avps(<<>>, _, Acc) ->
@@ -476,7 +474,9 @@ collect_avps(Bin, N, Acc) ->
split_avp(Bin) ->
{Code, V, M, P, Len, HdrLen} = split_head(Bin),
- {Data, B} = split_data(Bin, HdrLen, Len - HdrLen),
+
+ <<_:HdrLen/binary, Rest/binary>> = Bin,
+ {Data, B} = split_data(Rest, Len - HdrLen),
{B, #diameter_avp{code = Code,
vendor_id = V,
@@ -486,17 +486,15 @@ split_avp(Bin) ->
%% split_head/1
-split_head(<<Code:32, 1:1, M:1, P:1, _:5, Len:24, V:32, _/bitstring>>) ->
+split_head(<<Code:32, 1:1, M:1, P:1, _:5, Len:24, V:32, _/binary>>) ->
{Code, V, M, P, Len, 12};
-split_head(<<Code:32, 0:1, M:1, P:1, _:5, Len:24, _/bitstring>>) ->
+split_head(<<Code:32, 0:1, M:1, P:1, _:5, Len:24, _/binary>>) ->
{Code, undefined, M, P, Len, 8};
-%% Header is truncated: pack_avp/1 will pad to the minimum header
-%% length.
-split_head(B)
- when is_bitstring(B) ->
- ?THROW({5014, #diameter_avp{data = B}}).
+%% Header is truncated.
+split_head(Bin) ->
+ ?THROW({5014, #diameter_avp{data = Bin}}).
%% 3588:
%%
@@ -531,34 +529,27 @@ split_head(B)
%% split_data/3
-split_data(Bin, HdrLen, Len)
- when 0 =< Len ->
- split_data(Bin, HdrLen, Len, (4 - (Len rem 4)) rem 4);
-
-split_data(_, _, _) ->
- invalid_avp_length().
+split_data(Bin, Len) ->
+ Pad = (4 - (Len rem 4)) rem 4,
-%% split_data/4
+ %% Len might be negative here, but that ensures the failure of the
+ %% binary match.
-split_data(Bin, HdrLen, Len, Pad) ->
case Bin of
- <<_:HdrLen/binary, Data:Len/binary, _:Pad/binary, Rest/bitstring>> ->
+ <<Data:Len/binary, _:Pad/binary, Rest/binary>> ->
{Data, Rest};
_ ->
- invalid_avp_length()
+ %% 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.
+ {<<0:1, Bin/binary>>, <<>>}
end.
-%% invalid_avp_length/0
-%%
-%% AVP Length doesn't mesh with payload. Induce a decode error by
-%% returning a payload that no valid Diameter type can have. This is
-%% so that a known AVP will result in 5014 error with a zero'd
-%% payload. Here we simply don't know how to construct this payload.
-%% (Yes, this solution is an afterthought.)
-
-invalid_avp_length() ->
- {<<0:1>>, <<>>}.
-
%%% ---------------------------------------------------------------------------
%%% # pack_avp/1
%%% ---------------------------------------------------------------------------
@@ -590,17 +581,23 @@ pack_avp(#diameter_avp{data = {Dict, Name, Value}} = A) ->
{Name, Type} = Dict:avp_name(Code, Vid),
pack_avp(A#diameter_avp{data = {Hdr, {Type, Value}}});
+%% ... with a truncated header ...
pack_avp(#diameter_avp{code = undefined, data = B})
- when is_bitstring(B) ->
+ when is_binary(B) ->
%% Reset the AVP Length of an AVP Header resulting from a 5014
%% error. The RFC doesn't explicitly say to do this but the
%% receiver can't correctly extract this and following AVP's
%% without a correct length. On the downside, the header doesn't
%% reveal if the received header has been padded.
Pad = 8*header_length(B) - bit_size(B),
- Len = size(<<H:5/binary, _:24, T/binary>> = <<B/bitstring, 0:Pad>>),
+ Len = size(<<H:5/binary, _:24, T/binary>> = <<B/binary, 0:Pad>>),
<<H/binary, Len:24, T/binary>>;
+%% ... from a dictionary compiled against old code in diameter_gen ...
+%% ... when ignoring errors in Failed-AVP ...
+pack_avp(#diameter_avp{data = <<0:1, B/binary>>} = A) ->
+ pack_avp(A#diameter_avp{data = B});
+
%% ... or as an iolist.
pack_avp(#diameter_avp{code = Code,
vendor_id = V,
diff --git a/lib/diameter/src/base/diameter_lib.erl b/lib/diameter/src/base/diameter_lib.erl
index 44d81e2778..5b3a2063f8 100644
--- a/lib/diameter/src/base/diameter_lib.erl
+++ b/lib/diameter/src/base/diameter_lib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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 +25,8 @@
now_diff/1,
time/1,
eval/1,
+ eval_name/1,
+ get_stacktrace/0,
ipaddr/1,
spawn_opts/2,
wait/1,
@@ -32,6 +34,22 @@
log/4]).
%% ---------------------------------------------------------------------------
+%% # get_stacktrace/0
+%% ---------------------------------------------------------------------------
+
+%% Return a stacktrace with a leading, potentially large, argument
+%% list replaced by an arity. Trace on stacktrace/0 to see the
+%% original.
+
+get_stacktrace() ->
+ stacktrace(erlang:get_stacktrace()).
+
+stacktrace([{M,F,A,L} | T]) when is_list(A) ->
+ [{M, F, length(A), L} | T];
+stacktrace(L) ->
+ L.
+
+%% ---------------------------------------------------------------------------
%% # info_report/2
%% ---------------------------------------------------------------------------
@@ -60,9 +78,17 @@ warning_report(Reason, T) ->
report(fun error_logger:warning_report/1, Reason, T).
report(Fun, Reason, T) ->
- Fun([{why, Reason}, {who, self()}, {what, T}]),
+ Fun(io_lib:format("diameter: ~" ++ fmt(Reason) ++ "~n ~p~n",
+ [Reason, T])),
false.
+fmt(T) ->
+ if is_list(T) ->
+ "s";
+ true ->
+ "p"
+ end.
+
%% ---------------------------------------------------------------------------
%% # now_diff/1
%% ---------------------------------------------------------------------------
@@ -129,8 +155,8 @@ eval({M,F,A}) ->
eval([{M,F,A} | X]) ->
apply(M, F, X ++ A);
-eval([[F|A] | X]) ->
- eval([F | X ++ A]);
+eval([[F|X] | A]) ->
+ eval([F | A ++ X]);
eval([F|A]) ->
apply(F,A);
@@ -142,6 +168,28 @@ eval(F) ->
F().
%% ---------------------------------------------------------------------------
+%% eval_name/1
+%% ---------------------------------------------------------------------------
+
+eval_name({M,F,A}) ->
+ {M, F, length(A)};
+
+eval_name([{M,F,A} | X]) ->
+ {M, F, length(A) + length(X)};
+
+eval_name([[F|A] | X]) ->
+ eval_name([F | X ++ A]);
+
+eval_name([F|_]) ->
+ F;
+
+eval_name({F}) ->
+ eval_name(F);
+
+eval_name(F) ->
+ F.
+
+%% ---------------------------------------------------------------------------
%% # ipaddr/1
%%
%% Parse an IP address.
diff --git a/lib/diameter/src/base/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index 32e1b91966..31e570ae20 100644
--- a/lib/diameter/src/base/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
@@ -283,7 +283,7 @@ handle_info(T, #state{} = State) ->
ok ->
{noreply, State};
#state{state = X} = S ->
- ?LOGC(X =/= State#state.state, transition, X),
+ ?LOGC(X /= State#state.state, transition, X),
{noreply, S};
{stop, Reason} ->
?LOG(stop, Reason),
@@ -293,15 +293,11 @@ handle_info(T, #state{} = State) ->
{stop, {shutdown, T}, State}
catch
exit: {diameter_codec, encode, T} = Reason ->
- incr_error(send, T),
+ incr_error(send, T, State#state.dictionary),
?LOG(stop, Reason),
- %% diameter_codec:encode/2 emits an error report. Only
- %% indicate the probable reason here.
- diameter_lib:info_report(probable_configuration_error,
- insufficient_capabilities),
{stop, {shutdown, Reason}, State};
{?MODULE, Tag, Reason} ->
- ?LOG(Tag, {Reason, T}),
+ ?LOG(stop, Tag),
{stop, {shutdown, Reason}, State}
end.
%% The form of the throw caught here is historical. It's
@@ -477,12 +473,12 @@ send_CER(#state{state = {'Wait-Conn-Ack', Tmo},
orelse
close({already_connected, Remote, LCaps}),
CER = build_CER(S),
- ?LOG(send, 'CER'),
#diameter_packet{header = #diameter_header{end_to_end_id = Eid,
hop_by_hop_id = Hid}}
= Pkt
= encode(CER, Dict),
send(TPid, Pkt),
+ ?LOG(send, 'CER'),
start_timer(Tmo, S#state{state = {'Wait-CEA', Hid, Eid}}).
%% Register ourselves as connecting to the remote endpoint in
@@ -527,7 +523,6 @@ recv(#diameter_packet{header = #diameter_header{} = Hdr}
= S) ->
Name = diameter_codec:msg_name(Dict0, Hdr),
Pid ! {recv, self(), Name, Pkt},
- diameter_stats:incr({msg_id(Name, Hdr), recv}), %% count received
rcv(Name, Pkt, S);
recv(#diameter_packet{header = undefined,
@@ -554,42 +549,30 @@ recv(#diameter_header{length = Len}
recv(#diameter_header{}
= H,
#diameter_packet{bin = Bin},
- #state{length_errors = E}
- = S) ->
- invalid(E,
- invalid_message_length,
- recv,
- [size(Bin), bit_size(Bin) rem 8, H, S]);
+ #state{length_errors = E}) ->
+ T = {size(Bin), bit_size(Bin) rem 8, H},
+ invalid(E, message_length_mismatch, T);
-recv(false, Pkt, #state{length_errors = E} = S) ->
- invalid(E, truncated_header, recv, [Pkt, S]).
+recv(false, #diameter_packet{bin = Bin}, #state{length_errors = E}) ->
+ invalid(E, truncated_header, Bin).
%% Note that counters here only count discarded messages.
-invalid(E, Reason, F, A) ->
+invalid(E, Reason, T) ->
diameter_stats:incr(Reason),
- abort(E, Reason, F, A).
-
-abort(exit, Reason, F, A) ->
- diameter_lib:warning_report(Reason, {?MODULE, F, A}),
- throw({?MODULE, abort, Reason});
-
-abort(_, _, _, _) ->
+ E == exit andalso close({Reason, T}),
+ ?LOG(Reason, T),
ok.
-msg_id({_,_,_} = T, _) ->
- T;
-msg_id(_, Hdr) ->
- {_,_,_} = diameter_codec:msg_id(Hdr).
-
%% rcv/3
%% Incoming CEA.
-rcv('CEA',
+rcv('CEA' = N,
#diameter_packet{header = #diameter_header{end_to_end_id = Eid,
hop_by_hop_id = Hid}}
= Pkt,
#state{state = {'Wait-CEA', Hid, Eid}}
= S) ->
+ ?LOG(recv, N),
handle_CEA(Pkt, S);
%% Incoming CER
@@ -610,29 +593,46 @@ rcv('DPR' = N, Pkt, S) ->
%% DPA in response to DPR and with the expected identifiers.
rcv('DPA' = N,
#diameter_packet{header = #diameter_header{end_to_end_id = Eid,
- hop_by_hop_id = Hid}}
+ hop_by_hop_id = Hid}
+ = H}
= Pkt,
#state{dictionary = Dict0,
transport = TPid,
dpr = {Hid, Eid}}) ->
-
+ ?LOG(recv, N),
+ incr(recv, H, Dict0),
incr_rc(recv, diameter_codec:decode(Dict0, Pkt), Dict0),
diameter_peer:close(TPid),
{stop, N};
%% Ignore anything else, an unsolicited DPA in particular.
+rcv(N, #diameter_packet{header = H}, _)
+ when N == 'CER';
+ N == 'CEA';
+ N == 'DPR';
+ N == 'DPA' ->
+ ?LOG(ignored, N),
+ %% Note that these aren't counted in the normal recv counter.
+ diameter_stats:incr({diameter_codec:msg_id(H), recv, ignored}),
+ ok;
+
rcv(_, _, _) ->
ok.
+%% incr/3
+
+incr(Dir, Hdr, Dict0) ->
+ diameter_traffic:incr(Dir, Hdr, self(), Dict0).
+
%% incr_rc/3
incr_rc(Dir, Pkt, Dict0) ->
diameter_traffic:incr_rc(Dir, Pkt, self(), Dict0).
-%% incr_error/2
+%% incr_error/3
-incr_error(Dir, Pkt) ->
- diameter_traffic:incr_error(Dir, Pkt, self()).
+incr_error(Dir, Pkt, Dict0) ->
+ diameter_traffic:incr_error(Dir, Pkt, self(), Dict0).
%% send/2
@@ -640,19 +640,23 @@ incr_error(Dir, Pkt) ->
%% sending. In particular, the watchdog will send DWR as a binary
%% while messages coming from clients will be in a #diameter_packet.
send(Pid, Msg) ->
- diameter_stats:incr({diameter_codec:msg_id(Msg), send}),
diameter_peer:send(Pid, Msg).
%% handle_request/3
+%%
+%% Incoming CER or DPR.
-handle_request(Type, #diameter_packet{} = Pkt, #state{dictionary = D} = S) ->
- ?LOG(recv, Type),
- send_answer(Type, diameter_codec:decode(D, Pkt), S).
+handle_request(Name,
+ #diameter_packet{header = H} = Pkt,
+ #state{dictionary = Dict0} = S) ->
+ ?LOG(recv, Name),
+ incr(recv, H, Dict0),
+ send_answer(Name, diameter_codec:decode(Dict0, Pkt), S).
%% send_answer/3
send_answer(Type, ReqPkt, #state{transport = TPid, dictionary = Dict} = S) ->
- incr_error(recv, ReqPkt),
+ incr_error(recv, ReqPkt, Dict),
#diameter_packet{header = H,
transport_data = TD}
@@ -672,10 +676,15 @@ send_answer(Type, ReqPkt, #state{transport = TPid, dictionary = Dict} = S) ->
AnsPkt = diameter_codec:encode(Dict, Pkt),
+ incr(send, AnsPkt, Dict),
incr_rc(send, AnsPkt, Dict),
send(TPid, AnsPkt),
+ ?LOG(send, ans(Type)),
eval(PostF, S).
+ans('CER') -> 'CEA';
+ans('DPR') -> 'DPA'.
+
eval([F|A], S) ->
apply(F, A ++ [S]);
eval(T, _) ->
@@ -868,13 +877,12 @@ recv_CER(CER, #state{service = Svc, dictionary = Dict}) ->
%% handle_CEA/2
-handle_CEA(#diameter_packet{bin = Bin}
+handle_CEA(#diameter_packet{header = H}
= Pkt,
#state{dictionary = Dict0,
service = #diameter_service{capabilities = LCaps}}
- = S)
- when is_binary(Bin) ->
- ?LOG(recv, 'CEA'),
+ = S) ->
+ incr(recv, H, Dict0),
#diameter_packet{}
= DPkt
@@ -895,9 +903,7 @@ handle_CEA(#diameter_packet{bin = Bin}
%% connection with the peer.
try
- is_integer(RC)
- orelse ?THROW(no_result_code),
- ?IS_SUCCESS(RC)
+ is_integer(RC) andalso ?IS_SUCCESS(RC)
orelse ?THROW(RC),
[] == SApps
andalso ?THROW(no_common_application),
@@ -917,7 +923,7 @@ handle_CEA(#diameter_packet{bin = Bin}
%% capabilities exchange could send DIAMETER_LIMITED_SUCCESS = 2002,
%% even if this isn't required by RFC 3588.
-result_code({{'Result-Code', N}, _}) ->
+result_code({'Result-Code', N}) ->
N;
result_code(_) ->
undefined.
@@ -1013,19 +1019,13 @@ capz(#diameter_caps{} = L, #diameter_caps{} = R) ->
tl(tuple_to_list(R)))]).
%% close/1
+%%
+%% A good function to trace on in case of problems with capabilities
+%% exchange.
close(Reason) ->
- report(Reason),
throw({?MODULE, close, Reason}).
-%% Could possibly log more here.
-report({M, _, _, _, _} = T)
- when M == 'CER';
- M == 'CEA' ->
- diameter_lib:error_report(failure, T);
-report(_) ->
- ok.
-
%% dpr/2
%%
%% The RFC isn't clear on whether DPR should be send in a non-Open
@@ -1059,7 +1059,7 @@ dpr(_Reason, _S) ->
%% process and contact it. (eg. diameter:service_info/2)
dpr([CB|Rest], [Reason | _] = Args, S) ->
- try diameter_lib:eval([CB | Args]) of
+ case diameter_lib:eval([CB | Args]) of
{dpr, Opts} when is_list(Opts) ->
send_dpr(Reason, Opts, S);
dpr ->
@@ -1069,14 +1069,7 @@ dpr([CB|Rest], [Reason | _] = Args, S) ->
ignore ->
dpr(Rest, Args, S);
T ->
- No = {disconnect_cb, T},
- diameter_lib:error_report(invalid, No),
- {stop, No}
- catch
- E:R ->
- No = {disconnect_cb, E, R, ?STACK},
- diameter_lib:error_report(failure, No),
- {stop, No}
+ ?ERROR({disconnect_cb, CB, Args, T})
end;
dpr([], [Reason | _], S) ->
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 0dc3eb7123..b7cd311e02 100644
--- a/lib/diameter/src/base/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
@@ -731,14 +731,27 @@ remotes(F) ->
L when is_list(L) ->
L;
T ->
- diameter_lib:error_report({invalid_return, T}, F),
+ ?LOG(invalid_return, {F,T}),
+ error_report(invalid_return, share_peers, F),
[]
catch
E:R ->
- diameter_lib:error_report({failure, {E, R, ?STACK}}, F),
+ ?LOG(failure, {E, R, F, diameter_lib:get_stacktrace()}),
+ error_report(failure, share_peers, F),
[]
end.
+%% error_report/3
+
+error_report(T, What, F) ->
+ Reason = io_lib:format("~s from ~p callback", [reason(T), What]),
+ diameter_lib:error_report(Reason, diameter_lib:eval_name(F)).
+
+reason(invalid_return) ->
+ "invalid return";
+reason(failure) ->
+ "failure".
+
%% ---------------------------------------------------------------------------
%% # start/3
%% ---------------------------------------------------------------------------
@@ -1038,8 +1051,11 @@ peer_cb(App, F, A) ->
true
catch
E:R ->
- diameter_lib:error_report({failure, {E, R, ?STACK}},
- {App, F, A}),
+ %% Don't include arguments since a #diameter_caps{} strings
+ %% from the peer, which could be anything (especially, large).
+ [Mod|X] = App#diameter_app.module,
+ ?LOG(failure, {E, R, Mod, F, diameter_lib:get_stacktrace()}),
+ error_report(failure, F, {Mod, F, A ++ X}),
false
end.
@@ -1262,13 +1278,14 @@ cm([#diameter_app{alias = Alias} = App], Req, From, Svc) ->
mod_state(Alias, ModS),
{T, RC};
T ->
- diameter_lib:error_report({invalid, T},
- {App, handle_call, Args}),
+ ModX = App#diameter_app.module,
+ ?LOG(invalid_return, {ModX, handle_call, Args, T}),
invalid
catch
E: Reason ->
- diameter_lib:error_report({failure, {E, Reason, ?STACK}},
- {App, handle_call, Args}),
+ ModX = App#diameter_app.module,
+ Stack = diameter_lib:get_stacktrace(),
+ ?LOG(failure, {E, Reason, ModX, handle_call, Stack}),
failure
end;
@@ -1426,13 +1443,16 @@ pick_peer(Local,
T; %% Accept returned state in the immutable
{false = No, S} -> %% case as long it isn't changed.
No;
- T ->
- diameter_lib:error_report({invalid, T, App},
- {App, pick_peer, Args})
+ T when M ->
+ ModX = App#diameter_app.module,
+ ?LOG(invalid_return, {ModX, pick_peer, T}),
+ false
catch
- E: Reason ->
- diameter_lib:error_report({failure, {E, Reason, ?STACK}},
- {App, pick_peer, Args})
+ E: Reason when M ->
+ ModX = App#diameter_app.module,
+ Stack = diameter_lib:get_stacktrace(),
+ ?LOG(failure, {E, Reason, ModX, pick_peer, Stack}),
+ false
end.
%% peers/4
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index f2ac745053..5fac61f416 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -32,7 +32,8 @@
-export([receive_message/4]).
%% towards diameter_peer_fsm and diameter_watchdog
--export([incr_error/3,
+-export([incr/4,
+ incr_error/4,
incr_rc/4]).
%% towards diameter_service
@@ -48,6 +49,8 @@
-include_lib("diameter/include/diameter.hrl").
-include("diameter_internal.hrl").
+-define(LOGX(Reason, T), begin ?LOG(Reason, T), x({Reason, T}) end).
+
-define(RELAY, ?DIAMETER_DICT_RELAY).
-define(BASE, ?DIAMETER_DICT_COMMON). %% Note: the RFC 3588 dictionary
@@ -113,38 +116,52 @@ peer_down(TPid) ->
failover(TPid).
%% ---------------------------------------------------------------------------
-%% incr_error/3
+%% incr/4
%% ---------------------------------------------------------------------------
-%% A decoded message with errors.
-incr_error(Dir, #diameter_packet{header = H, errors = [_|_]}, TPid) ->
- incr_error(Dir, H, TPid);
+incr(Dir, #diameter_packet{header = H}, TPid, Dict) ->
+ incr(Dir, H, TPid, Dict);
-%% An encoded message with errors and an identifiable header ...
-incr_error(Dir, {_, _, #diameter_header{} = H}, TPid) ->
- incr_error(Dir, H, TPid);
+incr(Dir, #diameter_header{} = H, TPid, Dict) ->
+ incr(TPid, {msg_id(H, Dict), Dir}).
-%% ... or not.
-incr_error(Dir, {_,_}, TPid) ->
- incr(TPid, {unknown, Dir, error});
+%% ---------------------------------------------------------------------------
+%% incr_error/4
+%% ---------------------------------------------------------------------------
-incr_error(Dir, #diameter_header{} = H, TPid) ->
- incr_error(Dir, diameter_codec:msg_id(H), TPid);
+%% Decoded message without errors.
+incr_error(recv, #diameter_packet{errors = []}, _, _) ->
+ ok;
-incr_error(Dir, {_,_,_} = Id, TPid) ->
- incr(TPid, {Id, Dir, error});
+incr_error(recv = D, #diameter_packet{header = H}, TPid, Dict) ->
+ incr_error(D, H, TPid, Dict);
-incr_error(_, _, _) ->
- false.
+%% Encoded message with errors and an identifiable header ...
+incr_error(send = D, {_, _, #diameter_header{} = H}, TPid, Dict) ->
+ incr_error(D, H, TPid, Dict);
+
+%% ... or not.
+incr_error(send = D, {_,_}, TPid, _) ->
+ incr_error(D, unknown, TPid);
+incr_error(Dir, #diameter_header{} = H, TPid, Dict) ->
+ incr_error(Dir, msg_id(H, Dict), TPid);
+
+incr_error(Dir, Id, TPid, _) ->
+ incr_error(Dir, Id, TPid).
+
+incr_error(Dir, Id, TPid) ->
+ incr(TPid, {Id, Dir, error}).
+
%% ---------------------------------------------------------------------------
%% incr_rc/4
%% ---------------------------------------------------------------------------
--spec incr_rc(send|recv, #diameter_packet{}, TPid, Dict0)
+-spec incr_rc(send|recv, Pkt, TPid, Dict0)
-> {Counter, non_neg_integer()}
| Reason
- when TPid :: pid(),
+ when Pkt :: #diameter_packet{},
+ TPid :: pid(),
Dict0 :: module(),
Counter :: {'Result-Code', integer()}
| {'Experimental-Result', integer(), integer()},
@@ -154,9 +171,8 @@ incr_rc(Dir, Pkt, TPid, Dict0) ->
try
incr_rc(Dir, Pkt, Dict0, TPid, Dict0)
catch
- exit: {invalid_error_bit = E, _} ->
- E;
- exit: no_result_code = E ->
+ exit: {E,_} when E == no_result_code;
+ E == invalid_error_bit ->
E
end.
@@ -234,7 +250,7 @@ spawn_request(TPid, Pkt, Dict0, Opts, RecvData) ->
spawn_opt(fun() -> recv_request(TPid, Pkt, Dict0, RecvData) end, Opts)
catch
error: system_limit = E -> %% discard
- ?LOG({error, E}, now())
+ ?LOG(error, E)
end.
%% ---------------------------------------------------------------------------
@@ -263,8 +279,9 @@ recv_R({#diameter_app{id = Id, dictionary = Dict} = App, Caps},
Pkt0,
Dict0,
RecvData) ->
+ incr(recv, Pkt0, TPid, Dict),
Pkt = errors(Id, diameter_codec:decode(Id, Dict, Pkt0)),
- incr_error(recv, Pkt, TPid),
+ incr_error(recv, Pkt, TPid, Dict),
{Caps, Pkt, App, recv_R(App, TPid, Dict0, Caps, RecvData, Pkt)};
%% Note that the decode is different depending on whether or not Id is
%% ?APP_ID_RELAY.
@@ -336,23 +353,25 @@ rc(N) ->
%% This error is returned when a request is received with an invalid
%% message length.
-errors(_, #diameter_packet{header = #diameter_header{length = Len},
+errors(_, #diameter_packet{header = #diameter_header{length = Len} = H,
bin = Bin,
errors = Es}
= Pkt)
when Len < 20;
0 /= Len rem 4;
8*Len /= bit_size(Bin) ->
+ ?LOG(invalid_message_length, {H, bit_size(Bin)}),
Pkt#diameter_packet{errors = [5015 | Es]};
%% DIAMETER_UNSUPPORTED_VERSION 5011
%% This error is returned when a request was received, whose version
%% number is unsupported.
-errors(_, #diameter_packet{header = #diameter_header{version = V},
+errors(_, #diameter_packet{header = #diameter_header{version = V} = H,
errors = Es}
= Pkt)
when V /= ?DIAMETER_VERSION ->
+ ?LOG(unsupported_version, H),
Pkt#diameter_packet{errors = [5011 | Es]};
%% DIAMETER_COMMAND_UNSUPPORTED 3001
@@ -360,12 +379,13 @@ errors(_, #diameter_packet{header = #diameter_header{version = V},
%% recognize or support. This MUST be used when a Diameter node
%% receives an experimental command that it does not understand.
-errors(Id, #diameter_packet{header = #diameter_header{is_proxiable = P},
+errors(Id, #diameter_packet{header = #diameter_header{is_proxiable = P} = H,
msg = M,
errors = Es}
= Pkt)
when ?APP_ID_RELAY /= Id, undefined == M; %% don't know the command
?APP_ID_RELAY == Id, not P -> %% command isn't proxiable
+ ?LOG(command_unsupported, H),
Pkt#diameter_packet{errors = [3001 | Es]};
%% DIAMETER_INVALID_HDR_BITS 3008
@@ -374,9 +394,11 @@ errors(Id, #diameter_packet{header = #diameter_header{is_proxiable = P},
%% inconsistent with the command code's definition.
errors(_, #diameter_packet{header = #diameter_header{is_request = true,
- is_error = true},
+ is_error = true}
+ = H,
errors = Es}
= Pkt) ->
+ ?LOG(invalid_hdr_bits, H),
Pkt#diameter_packet{errors = [3008 | Es]};
%% Green.
@@ -532,7 +554,6 @@ answer_message(RC,
origin_realm = {OR,_}},
Dict0,
Pkt) ->
- ?LOG({error, RC}, Pkt),
{Dict0, answer_message(OH, OR, RC, Dict0, Pkt)}.
%% resend/7
@@ -651,6 +672,7 @@ reply(Msg, Dict, TPid, Dict0, Fs, ReqPkt) ->
TPid,
reset(make_answer_packet(Msg, ReqPkt), Dict, Dict0),
Fs),
+ incr(send, Pkt, TPid, Dict),
incr_rc(send, Pkt, Dict, TPid, Dict0), %% count outgoing
send(TPid, Pkt).
@@ -1035,21 +1057,29 @@ incr_rc(Dir, Pkt, Dict, TPid, Dict0) ->
errors = Es}
= Pkt,
- Id = diameter_codec:msg_id(Hdr),
+ Id = msg_id(Hdr, Dict),
%% Count incoming decode errors.
- recv /= Dir orelse [] == Es orelse incr_error(Dir, Id, TPid),
+ recv /= Dir orelse [] == Es orelse incr_error(Dir, Id, TPid, Dict),
%% Exit on a missing result code.
T = rc_counter(Dict, Msg),
- T == false andalso x(no_result_code, answer, [Dir, Pkt]),
+ T == false andalso ?LOGX(no_result_code, {Dict, Dir, Hdr}),
{Ctr, RC} = T,
%% Or on an inappropriate value.
is_result(RC, E, Dict0)
- orelse x({invalid_error_bit, RC}, answer, [Dir, Pkt]),
+ orelse ?LOGX(invalid_error_bit, {Dict, Dir, Hdr, RC}),
- incr(TPid, {Id, Dir, Ctr}).
+ 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(Hdr, Dict) ->
+ {_ApplId, Code, R} = Id = diameter_codec:msg_id(Hdr),
+ choose('' == Dict:msg_name(Code, 0 == R), unknown, Id).
%% No E-bit: can't be 3xxx.
is_result(RC, false, _Dict0) ->
@@ -1067,8 +1097,8 @@ is_result(RC, true, _) ->
%% incr/2
-incr(TPid, {_, _, T} = Counter) ->
- {T, diameter_stats:incr(Counter, TPid, 1)}.
+incr(TPid, Counter) ->
+ diameter_stats:incr(Counter, TPid, 1).
%% rc_counter/2
@@ -1112,13 +1142,6 @@ int(N)
int(_) ->
undefined.
--spec x(any(), atom(), list()) -> no_return().
-
-%% Warn and exit request process on errors in an incoming answer.
-x(Reason, F, A) ->
- diameter_lib:warning_report(Reason, {?MODULE, F, A}),
- x(Reason).
-
x(T) ->
exit(T).
@@ -1425,12 +1448,14 @@ handle_answer(SvcName,
%% want to examine the answer?
handle_A(Pkt, SvcName, Dict, Dict0, App, #request{transport = TPid} = Req) ->
+ incr(recv, Pkt, TPid, Dict),
+
try
incr_rc(recv, Pkt, Dict, TPid, Dict0) %% count incoming
of
_ -> answer(Pkt, SvcName, App, Req)
catch
- exit: no_result_code ->
+ exit: {no_result_code, _} ->
%% RFC 6733 requires one of Result-Code or
%% Experimental-Result, but the decode will have detected
%% a missing AVP. If both are optional in the dictionary
@@ -1462,11 +1487,16 @@ a(#diameter_packet{errors = Es}
callback == AE ->
cb(ModX, handle_answer, [Pkt, msg(P), SvcName, {TPid, Caps}]);
-a(Pkt, SvcName, _, report, Req) ->
- x(errors, handle_answer, [SvcName, Req, Pkt]);
+a(Pkt, SvcName, _, AE, _) ->
+ a(Pkt#diameter_packet.header, SvcName, AE).
+
+a(Hdr, SvcName, report) ->
+ MFA = {?MODULE, handle_answer, [SvcName, Hdr]},
+ diameter_lib:warning_report(errors, MFA),
+ a(Hdr, SvcName, discard);
-a(Pkt, SvcName, _, discard, Req) ->
- x({errors, handle_answer, [SvcName, Req, Pkt]}).
+a(Hdr, SvcName, discard) ->
+ x({answer_errors, {SvcName, Hdr}}).
%% Note that we don't check that the application id in the answer's
%% header is what we expect. (TODO: Does the rfc says anything about
@@ -1544,7 +1574,7 @@ encode(Dict, TPid, #diameter_packet{bin = undefined} = Pkt) ->
diameter_codec:encode(Dict, Pkt)
catch
exit: {diameter_codec, encode, T} = Reason ->
- incr_error(send, T, TPid),
+ incr_error(send, T, TPid, Dict),
exit(Reason)
end;
@@ -1652,7 +1682,7 @@ resend_request(Pkt0,
packet = Pkt0,
caps = Caps},
- ?LOG(retransmission, Req),
+ ?LOG(retransmission, Pkt#diameter_packet.header),
TRef = send_request(TPid, Pkt, Req, SvcName, Tmo),
{TRef, Req}.
diff --git a/lib/diameter/src/base/diameter_watchdog.erl b/lib/diameter/src/base/diameter_watchdog.erl
index e89b1394ee..eff5096745 100644
--- a/lib/diameter/src/base/diameter_watchdog.erl
+++ b/lib/diameter/src/base/diameter_watchdog.erl
@@ -219,7 +219,6 @@ dict0(_, _, Acc) ->
Acc.
config_error(T) ->
- diameter_lib:error_report(configuration_error, T),
exit({shutdown, {configuration_error, T}}).
%% handle_call/3
@@ -268,7 +267,7 @@ event(Msg,
TPid = tpid(F,T),
E = {[TPid | data(Msg, TPid, From, To)], From, To},
send(Pid, {watchdog, self(), E}),
- ?LOG(transition, {self(), E}).
+ ?LOG(transition, {From, To}).
data(Msg, TPid, reopen, okay) ->
{recv, TPid, 'DWA', _Pkt} = Msg, %% assert
@@ -477,8 +476,7 @@ encode(dwr = M, Dict0, Mask) ->
hop_by_hop_id = Seq},
Pkt = #diameter_packet{header = Hdr,
msg = Msg},
- #diameter_packet{bin = Bin} = diameter_codec:encode(Dict0, Pkt),
- Bin;
+ diameter_codec:encode(Dict0, Pkt);
encode(dwa, Dict0, #diameter_packet{header = H, transport_data = TD}
= ReqPkt) ->
@@ -547,10 +545,14 @@ send_watchdog(#watchdog{pending = false,
dictionary = Dict0,
sequence = Mask}
= S) ->
- send(TPid, {send, encode(dwr, Dict0, Mask)}),
+ #diameter_packet{bin = Bin} = EPkt = encode(dwr, Dict0, Mask),
+ diameter_traffic:incr(send, EPkt, TPid, Dict0),
+ send(TPid, {send, Bin}),
?LOG(send, 'DWR'),
S#watchdog{pending = true}.
+%% Dont' count encode errors since we don't expect any on DWR/DWA.
+
%% recv/3
recv(Name, Pkt, S) ->
@@ -567,9 +569,12 @@ recv(Name, Pkt, S) ->
rcv('DWR', Pkt, #watchdog{transport = TPid,
dictionary = Dict0}) ->
+ ?LOG(recv, 'DWR'),
DPkt = diameter_codec:decode(Dict0, Pkt),
- diameter_traffic:incr_error(recv, DPkt, TPid),
+ diameter_traffic:incr(recv, DPkt, TPid, Dict0),
+ diameter_traffic:incr_error(recv, DPkt, TPid, Dict0),
EPkt = encode(dwa, Dict0, Pkt),
+ diameter_traffic:incr(send, EPkt, TPid, Dict0),
diameter_traffic:incr_rc(send, EPkt, TPid, Dict0),
send(TPid, {send, EPkt}),
@@ -577,6 +582,8 @@ rcv('DWR', Pkt, #watchdog{transport = TPid,
rcv('DWA', Pkt, #watchdog{transport = TPid,
dictionary = Dict0}) ->
+ ?LOG(recv, 'DWA'),
+ diameter_traffic:incr(recv, Pkt, TPid, Dict0),
diameter_traffic:incr_rc(recv,
diameter_codec:decode(Dict0, Pkt),
TPid,
diff --git a/lib/diameter/test/diameter_traffic_SUITE.erl b/lib/diameter/test/diameter_traffic_SUITE.erl
index a97c54fc04..4b67372016 100644
--- a/lib/diameter/test/diameter_traffic_SUITE.erl
+++ b/lib/diameter/test/diameter_traffic_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2014. 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
@@ -43,7 +43,9 @@
send_protocol_error/1,
send_arbitrary/1,
send_unknown/1,
+ send_unknown_short/1,
send_unknown_mandatory/1,
+ send_unknown_short_mandatory/1,
send_noreply/1,
send_unsupported/1,
send_unsupported_app/1,
@@ -54,7 +56,8 @@
send_zero_avp_length/1,
send_invalid_avp_length/1,
send_invalid_reject/1,
- send_unrecognized_mandatory/1,
+ send_unexpected_mandatory_decode/1,
+ send_unexpected_mandatory/1,
send_long/1,
send_nopeer/1,
send_noapp/1,
@@ -266,7 +269,9 @@ tc() ->
send_protocol_error,
send_arbitrary,
send_unknown,
+ send_unknown_short,
send_unknown_mandatory,
+ send_unknown_short_mandatory,
send_noreply,
send_unsupported,
send_unsupported_app,
@@ -277,7 +282,8 @@ tc() ->
send_zero_avp_length,
send_invalid_avp_length,
send_invalid_reject,
- send_unrecognized_mandatory,
+ send_unexpected_mandatory_decode,
+ send_unexpected_mandatory,
send_long,
send_nopeer,
send_noapp,
@@ -447,6 +453,24 @@ send_unknown(Config) ->
data = <<17>>}]}
= lists:last(Avps).
+%% Ditto, and point the AVP length past the end of the message. Expect
+%% 5014.
+send_unknown_short(Config) ->
+ send_unknown_short(Config, false, ?INVALID_AVP_LENGTH).
+
+send_unknown_short(Config, M, RC) ->
+ Req = ['ASR', {'AVP', [#diameter_avp{code = 999,
+ is_mandatory = M,
+ data = <<17>>}]}],
+ ['ASA', _SessionId, {'Result-Code', RC} | Avps]
+ = call(Config, Req),
+ [#'diameter_base_Failed-AVP'{'AVP' = As}]
+ = proplists:get_value('Failed-AVP', Avps),
+ [#diameter_avp{code = 999,
+ is_mandatory = M,
+ data = <<17, _/binary>>}] %% extra bits from padding
+ = As.
+
%% Ditto but set the M flag.
send_unknown_mandatory(Config) ->
Req = ['ASR', {'AVP', [#diameter_avp{code = 999,
@@ -461,6 +485,27 @@ send_unknown_mandatory(Config) ->
data = <<17>>}]
= As.
+%% Ditto, and point the AVP length past the end of the message. Expect
+%% 5014 instead of 5001.
+send_unknown_short_mandatory(Config) ->
+ send_unknown_short(Config, true, ?INVALID_AVP_LENGTH).
+
+%% Send an ACR containing an unexpected mandatory Session-Timeout.
+%% Expect 5001, and check that the value in Failed-AVP was decoded.
+send_unexpected_mandatory_decode(Config) ->
+ Req = ['ASR', {'AVP', [#diameter_avp{code = 27, %% Session-Timeout
+ is_mandatory = true,
+ data = <<12:32>>}]}],
+ ['ASA', _SessionId, {'Result-Code', ?AVP_UNSUPPORTED} | Avps]
+ = call(Config, Req),
+ [#'diameter_base_Failed-AVP'{'AVP' = As}]
+ = proplists:get_value('Failed-AVP', Avps),
+ [#diameter_avp{code = 27,
+ is_mandatory = true,
+ value = 12,
+ data = <<12:32>>}]
+ = As.
+
%% Send an STR that the server ignores.
send_noreply(Config) ->
Req = ['STR', {'Termination-Cause', ?BAD_ANSWER}],
@@ -527,9 +572,9 @@ send_invalid_reject(Config) ->
?answer_message(?TOO_BUSY)
= call(Config, Req).
-%% Send an STR containing a known AVP, but one that's not allowed and
-%% sets the M-bit.
-send_unrecognized_mandatory(Config) ->
+%% Send an STR containing a known AVP, but one that's not expected and
+%% that sets the M-bit.
+send_unexpected_mandatory(Config) ->
Req = ['STR', {'Termination-Cause', ?LOGOUT}],
['STA', _SessionId, {'Result-Code', ?AVP_UNSUPPORTED} | _]
@@ -836,6 +881,26 @@ log(#diameter_packet{bin = Bin} = P, T)
%% prepare/4
prepare(Pkt, Caps, N, #group{client_dict0 = Dict0} = Group)
+ when N == send_unknown_short_mandatory;
+ N == send_unknown_short ->
+ Req = prepare(Pkt, Caps, Group),
+
+ #diameter_packet{header = #diameter_header{length = L},
+ bin = Bin}
+ = E
+ = diameter_codec:encode(Dict0, Pkt#diameter_packet{msg = Req}),
+
+ %% Find the unknown AVP data at the end of the message and alter
+ %% its length header.
+
+ {Padding, [17|_]} = lists:splitwith(fun(C) -> C == 0 end,
+ lists:reverse(binary_to_list(Bin))),
+
+ Offset = L - length(Padding) - 4,
+ <<H:Offset/binary, Len:24, T/binary>> = Bin,
+ E#diameter_packet{bin = <<H/binary, (Len+9):24, T/binary>>};
+
+prepare(Pkt, Caps, N, #group{client_dict0 = Dict0} = Group)
when N == send_long_avp_length;
N == send_short_avp_length;
N == send_zero_avp_length ->
@@ -876,8 +941,8 @@ prepare(Pkt, Caps, N, #group{client_dict0 = Dict0} = Group)
<<V, L:24, H/binary>> = H0, %% assert
E#diameter_packet{bin = <<V, (L+4):24, H/binary, 16:24, 0:32, T/binary>>};
-prepare(Pkt, Caps, send_unrecognized_mandatory, #group{client_dict0 = Dict0}
- = Group) ->
+prepare(Pkt, Caps, send_unexpected_mandatory, #group{client_dict0 = Dict0}
+ = Group) ->
Req = prepare(Pkt, Caps, Group),
#diameter_packet{bin = <<V, Len:24, T/binary>>}
= E
@@ -997,7 +1062,9 @@ answer(Rec, [_|_], N)
N == send_short_avp_length;
N == send_zero_avp_length;
N == send_invalid_avp_length;
- N == send_invalid_reject ->
+ N == send_invalid_reject;
+ N == send_unknown_short_mandatory;
+ N == send_unexpected_mandatory_decode ->
Rec;
answer(Rec, [], _) ->
Rec.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 10:19:30 +0000