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-rw-r--r--lib/diameter/src/base/diameter_capx.erl25
-rw-r--r--lib/diameter/src/base/diameter_codec.erl22
-rw-r--r--lib/diameter/src/base/diameter_peer_fsm.erl197
-rw-r--r--lib/diameter/src/base/diameter_service.erl42
4 files changed, 144 insertions, 142 deletions
diff --git a/lib/diameter/src/base/diameter_capx.erl b/lib/diameter/src/base/diameter_capx.erl
index 293eb0c196..842a9e6103 100644
--- a/lib/diameter/src/base/diameter_capx.erl
+++ b/lib/diameter/src/base/diameter_capx.erl
@@ -57,9 +57,9 @@
-include("diameter_types.hrl").
-include("diameter_gen_base_rfc3588.hrl").
--define(SUCCESS, ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_SUCCESS').
--define(NOAPP, ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_NO_COMMON_APPLICATION').
--define(NOSECURITY, ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_NO_COMMON_SECURITY').
+-define(SUCCESS, 2001). %% DIAMETER_SUCCESS
+-define(NOAPP, 5010). %% DIAMETER_NO_COMMON_APPLICATION
+-define(NOSECURITY, 5017). %% DIAMETER_NO_COMMON_SECURITY
-define(NO_INBAND_SECURITY, 0).
-define(TLS, 1).
@@ -96,7 +96,7 @@ try_it([Fun | Args]) ->
try apply(Fun, Args) of
T -> {ok, T}
catch
- throw: ?FAILURE(Reason) -> {error, {Reason, Args}}
+ throw: ?FAILURE(Reason) -> {error, Reason}
end.
%% mk_caps/2
@@ -288,25 +288,12 @@ to_cea(CER, Field, CEA) ->
%% rCEA/2
-rCEA(#diameter_base_CEA{'Result-Code' = RC}
- = CEA,
- #diameter_service{capabilities = LCaps}
- = Svc) ->
- RC == ?SUCCESS orelse ?THROW({'Result-Code', RC}),
-
+rCEA(CEA, #diameter_service{capabilities = LCaps} = Svc) ->
RCaps = capx_to_caps(CEA),
SApps = common_applications(LCaps, RCaps, Svc),
-
- [] == SApps andalso ?THROW(no_common_applications),
-
IS = common_security(LCaps, RCaps),
- [] == IS andalso ?THROW(no_common_security),
-
- {SApps, IS, RCaps};
-
-rCEA(CEA, _Svc) ->
- ?THROW({invalid, CEA}).
+ {SApps, IS, RCaps}.
%% capx_to_caps/1
diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl
index d88f42fb7c..fe1212b7e0 100644
--- a/lib/diameter/src/base/diameter_codec.erl
+++ b/lib/diameter/src/base/diameter_codec.erl
@@ -190,26 +190,13 @@ encode_avps(Avps) ->
%% msg_header/3
-msg_header(Mod, MsgName, Header) ->
- {Code, Flags, ApplId} = h(Mod, MsgName, Header),
- {Code, p(Flags, Header), ApplId}.
-
-%% 6.2 of 3588 requires the same 'P' bit on an answer as on the
-%% request.
-
-p(Flags, #diameter_header{is_request = true,
- is_proxiable = P}) ->
- Flags band (2#10110000 bor choose(P, 2#01000000, 0));
-p(Flags, _) ->
- Flags.
-
-h(Mod, 'answer-message' = MsgName, Header) ->
+msg_header(Mod, 'answer-message' = MsgName, Header) ->
?BASE = Mod,
#diameter_header{cmd_code = Code} = Header,
{_, Flags, ApplId} = ?BASE:msg_header(MsgName),
{Code, Flags, ApplId};
-h(Mod, MsgName, _) ->
+msg_header(Mod, MsgName, _) ->
Mod:msg_header(MsgName).
%% rec2msg/2
@@ -554,8 +541,3 @@ pack_avp(Code, Flags, Vid, Sz, Bin) ->
pack_avp(Code, Flags, Sz, Bin) ->
Length = Sz + 8,
<<Code:32, Flags:8, Length:24, Bin/binary>>.
-
-%% ===========================================================================
-
-choose(true, X, _) -> X;
-choose(false, _, X) -> X.
diff --git a/lib/diameter/src/base/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index 3f1610b325..d754c1bcc8 100644
--- a/lib/diameter/src/base/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
@@ -325,9 +325,10 @@ send_CER(#state{mode = {connect, Remote},
service = #diameter_service{capabilities = Caps},
transport = TPid}
= S) ->
- req_send_CER(Caps#diameter_caps.origin_host, Remote)
+ OH = Caps#diameter_caps.origin_host,
+ req_send_CER(OH, Remote)
orelse
- close(connected, S),
+ close({already_connected, Remote, Caps}, S),
CER = build_CER(S),
?LOG(send, 'CER'),
send(TPid, encode(CER)),
@@ -469,19 +470,19 @@ handle_request(Type, #diameter_packet{} = Pkt, S) ->
%% send_answer/3
send_answer(Type, ReqPkt, #state{transport = TPid} = S) ->
- #diameter_packet{header = #diameter_header{version = V,
- end_to_end_id = Eid,
- hop_by_hop_id = Hid,
- is_proxiable = P},
+ #diameter_packet{header = H,
transport_data = TD}
= ReqPkt,
- {Msg, PostF} = build_answer(Type, V, ReqPkt, S),
+ {Msg, PostF} = build_answer(Type, ReqPkt, S),
- Pkt = #diameter_packet{header = #diameter_header{version = V,
- end_to_end_id = Eid,
- hop_by_hop_id = Hid,
- is_proxiable = P},
+ %% An answer message clears the R and T flags and retains the P
+ %% flag. The E flag is set at encode.
+ Pkt = #diameter_packet{header
+ = H#diameter_header{version = ?DIAMETER_VERSION,
+ is_request = false,
+ is_error = undefined,
+ is_retransmitted = false},
msg = Msg,
transport_data = TD},
@@ -493,57 +494,79 @@ eval([F|A], S) ->
eval(ok, S) ->
S.
-%% build_answer/4
+%% build_answer/3
build_answer('CER',
- ?DIAMETER_VERSION,
#diameter_packet{msg = CER,
- header = #diameter_header{is_error = false},
+ header = #diameter_header{version
+ = ?DIAMETER_VERSION,
+ is_error = false},
errors = []}
= Pkt,
- #state{service = Svc}
- = S) ->
+ S) ->
{SupportedApps, RCaps, #diameter_base_CEA{'Result-Code' = RC,
- 'Inband-Security-Id' = [IS]}
+ 'Inband-Security-Id' = IS}
= CEA}
= recv_CER(CER, S),
- #diameter_service{capabilities = LCaps}
- = Svc,
-
#diameter_caps{origin_host = {OH, DH}}
= Caps
- = capz(LCaps, RCaps),
+ = capz(caps(S), RCaps),
try
2001 == RC %% DIAMETER_SUCCESS
- orelse ?THROW({result_code, RC}),
+ orelse ?THROW(RC),
register_everywhere({?MODULE, connection, OH, DH})
- orelse ?THROW({result_code, 4003}), %% DIAMETER_ELECTION_LOST
+ orelse ?THROW(4003), %% DIAMETER_ELECTION_LOST
caps_cb(Caps)
of
- ok -> {CEA, [fun open/5, Pkt, SupportedApps, Caps, {accept, IS}]}
+ N -> {cea(CEA, N), [fun open/5, Pkt,
+ SupportedApps,
+ Caps,
+ {accept, hd([_] = IS)}]}
catch
- ?FAILURE(discard = T) ->
- close({'CER', T, DH}, S);
- ?FAILURE({result_code, N}) ->
- {answer_message(cea(S), N), [fun close/2, {'CER', N, DH}]}
+ ?FAILURE(Reason) ->
+ rejected(Reason, {'CER', Reason, Caps, Pkt}, S)
end;
%% The error checks below are similar to those in diameter_service for
%% other messages. Should factor out the commonality.
-build_answer(Type, V, #diameter_packet{header = H, errors = Es} = Pkt, S) ->
- FailedAvp = failed_avp([A || {_,A} <- Es]),
- Msg = answer_message(answer(Type, S), rc(V, H, Es)),
- {set(Msg, FailedAvp), if 'CER' == Type ->
- [fun close/2, {Type, V, Pkt}];
- true ->
- ok
- end}.
+build_answer(Type,
+ #diameter_packet{header = H,
+ errors = Es}
+ = Pkt,
+ S) ->
+ RC = rc(H, Es),
+ {answer(Type, RC, Es, S), post(Type, RC, Pkt, S)}.
+
+cea(CEA, ok) ->
+ CEA;
+cea(CEA, 2001) ->
+ CEA;
+cea(CEA, RC) ->
+ CEA#diameter_base_CEA{'Result-Code' = RC}.
+
+post('CER' = T, RC, Pkt, S) ->
+ [fun close/2, {T, caps(S), {RC, Pkt}}];
+post(_, _, _, _) ->
+ ok.
+
+rejected({capabilities_cb, _F, Reason}, T, S) ->
+ rejected(Reason, T, S);
-cea(S) ->
- answer('CER', S).
+rejected(discard, T, S) ->
+ close(T, S);
+rejected({N, Es}, T, S) ->
+ {answer('CER', N, Es, S), [fun close/2, T]};
+rejected(N, T, S) ->
+ rejected({N, []}, T, S).
+
+answer(Type, RC, Es, S) ->
+ set(answer(Type, RC, S), failed_avp([A || {_,A} <- Es])).
+
+answer(Type, RC, S) ->
+ answer_message(answer(Type, S), RC).
%% answer_message/2
@@ -576,19 +599,19 @@ set(['answer-message' | _] = Ans, FailedAvp) ->
set([_|_] = Ans, FailedAvp) ->
Ans ++ FailedAvp.
-%% rc/3
+%% rc/2
-rc(_, #diameter_header{is_error = true}, _) ->
+rc(#diameter_header{is_error = true}, _) ->
3008; %% DIAMETER_INVALID_HDR_BITS
-rc(_, _, [Bs|_])
+rc(_, [Bs|_])
when is_bitstring(Bs) ->
3009; %% DIAMETER_INVALID_HDR_BITS
-rc(?DIAMETER_VERSION, _, Es) ->
+rc(#diameter_header{version = ?DIAMETER_VERSION}, Es) ->
rc(Es);
-rc(_, _, _) ->
+rc(_, _) ->
5011. %% DIAMETER_UNSUPPORTED_VERSION
%% rc/1
@@ -656,58 +679,68 @@ recv_CER(CER, #state{service = Svc}) ->
%% handle_CEA/1
-handle_CEA(#diameter_packet{header = #diameter_header{version = V},
- bin = Bin}
+handle_CEA(#diameter_packet{bin = Bin}
= Pkt,
#state{service = #diameter_service{capabilities = LCaps}}
= S)
when is_binary(Bin) ->
?LOG(recv, 'CEA'),
- ?DIAMETER_VERSION == V orelse close({version, V}, S),
-
- #diameter_packet{msg = CEA, errors = Errors}
+ #diameter_packet{msg = CEA}
= DPkt
= diameter_codec:decode(?BASE, Pkt),
- [] == Errors orelse close({errors, Errors}, S),
-
- {SApps, [IS], RCaps} = recv_CEA(CEA, S),
+ {SApps, IS, RCaps} = recv_CEA(DPkt, S),
#diameter_caps{origin_host = {OH, DH}}
= Caps
= capz(LCaps, RCaps),
+ #diameter_base_CEA{'Result-Code' = RC}
+ = CEA,
+
%% Ensure that we don't already have a connection to the peer in
%% question. This isn't the peer election of 3588 except in the
%% sense that, since we don't know who we're talking to until we
%% receive a CER/CEA, the first that arrives wins the right to a
%% connection with the peer.
- register_everywhere({?MODULE, connection, OH, DH})
- orelse close({'CEA', DH}, S),
-
- try caps_cb(Caps) of
- ok -> open(DPkt, SApps, Caps, {connect, IS}, S)
+ try
+ 2001 == RC
+ orelse ?THROW(RC),
+ [] == SApps
+ andalso ?THROW(no_common_application),
+ [] == IS
+ andalso ?THROW(no_common_security),
+ register_everywhere({?MODULE, connection, OH, DH})
+ orelse ?THROW(election_lost),
+ caps_cb(Caps)
+ of
+ _ -> open(DPkt, SApps, Caps, {connect, hd([_] = IS)}, S)
catch
- ?FAILURE(Reason) -> close(Reason, S)
+ ?FAILURE(Reason) -> close({'CEA', Reason, Caps, DPkt}, S)
end.
+%% Check more than the result code since the peer could send 2001
+%% regardless.
%% recv_CEA/2
-recv_CEA(CEA, #state{service = Svc} = S) ->
- case diameter_capx:recv_CEA(CEA, Svc) of
- {ok, {_,_}} -> %% return from old code
- close({'CEA', update}, S);
- {ok, {[], _, _}} ->
- close({'CEA', no_common_application}, S);
- {ok, {_, [], _}} ->
- close({'CEA', no_common_security}, S);
- {ok, {_,_,_} = T} ->
- T;
- {error, Reason} ->
- close({'CEA', Reason}, S)
- end.
+recv_CEA(#diameter_packet{header = #diameter_header{version
+ = ?DIAMETER_VERSION,
+ is_error = false},
+ msg = CEA,
+ errors = []},
+ #state{service = Svc}) ->
+ {ok, T} = diameter_capx:recv_CEA(CEA, Svc),
+ T;
+
+recv_CEA(Pkt, S) ->
+ close({'CEA', caps(S), Pkt}, S).
+
+caps(#diameter_service{capabilities = Caps}) ->
+ Caps;
+caps(#state{service = Svc}) ->
+ caps(Svc).
%% caps_cb/1
@@ -721,17 +754,21 @@ ccb([F | Rest], T) ->
case diameter_lib:eval([F|T]) of
ok ->
ccb(Rest, T);
+ N when 2 == N div 1000 -> %% 2xxx Result-Code
+ N;
Res ->
- ?THROW({{capabilities_cb, F}, rejected(Res)})
+ ?THROW({capabilities_cb, F, rejected(Res)})
end.
+%% Note that returning 2xxx causes the capabilities exchange to be
+%% accepted directly, without further callbacks.
-rejected({result_code, N} = T)
- when 1000 =< N, N < 6000 ->
- T;
rejected(discard = T) ->
T;
rejected(unknown) ->
- {result_code, 3010}. %% DIAMETER_UNKNOWN_PEER
+ 3010; %% DIAMETER_UNKNOWN_PEER
+rejected(N)
+ when is_integer(N) ->
+ N.
%% open/5
@@ -740,26 +777,26 @@ open(Pkt, SupportedApps, Caps, {Type, IS}, #state{parent = Pid} = S) ->
inband_security_id = {LS,_}}
= Caps,
- tls_ack(lists:member(?TLS, LS), Type, IS, S),
+ tls_ack(lists:member(?TLS, LS), Caps, Type, IS, S),
Pid ! {open, self(), H, {Caps, SupportedApps, Pkt}},
S#state{state = 'Open'}.
%% We've advertised TLS support: tell the transport the result
%% and expect a reply when the handshake is complete.
-tls_ack(true, Type, IS, #state{transport = TPid} = S) ->
+tls_ack(true, Caps, Type, IS, #state{transport = TPid} = S) ->
Ref = make_ref(),
TPid ! {diameter, {tls, Ref, Type, IS == ?TLS}},
receive
{diameter, {tls, Ref}} ->
ok;
- {'DOWN', _, process, TPid, _} = T ->
- close({tls_ack, T}, S)
+ {'DOWN', _, process, TPid, Reason} ->
+ close({tls_ack, Reason, Caps}, S)
end;
%% Or not. Don't send anything to the transport so that transports
%% not supporting TLS work as before without modification.
-tls_ack(false, _, _, _) ->
+tls_ack(false, _, _, _, _) ->
ok.
capz(#diameter_caps{} = L, #diameter_caps{} = R) ->
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 421e36ccf5..3ae6ed755f 100644
--- a/lib/diameter/src/base/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
@@ -983,7 +983,8 @@ peer_cb(MFA, Alias) ->
connection_down(Pid, #state{peerT = PeerT,
connT = ConnT}
= S) ->
- #peer{conn = TPid}
+ #peer{op_state = ?STATE_UP, %% assert
+ conn = TPid}
= P
= fetch(PeerT, Pid),
@@ -993,6 +994,9 @@ connection_down(Pid, #state{peerT = PeerT,
%% connection_down/3
+connection_down(#peer{op_state = ?STATE_DOWN}, _, S) ->
+ S;
+
connection_down(#peer{conn = TPid,
op_state = ?STATE_UP}
= P,
@@ -1034,13 +1038,23 @@ down_conn(Id, Alias, TC, {SvcName, Apps}) ->
%% Peer process has died.
-peer_down(Pid, _Reason, #state{peerT = PeerT} = S) ->
+peer_down(Pid, Reason, #state{peerT = PeerT} = S) ->
P = fetch(PeerT, Pid),
ets:delete_object(PeerT, P),
+ closed(Reason, P, S),
restart(P,S),
peer_down(P,S).
-%% peer_down/2
+%% Send an event at connection establishment failure.
+closed({shutdown, {close, _TPid, Reason}},
+ #peer{op_state = ?STATE_DOWN,
+ ref = Ref,
+ type = Type,
+ options = Opts},
+ #state{service_name = SvcName}) ->
+ send_event(SvcName, {closed, Ref, Reason, {type(Type), Opts}});
+closed(_, _, _) ->
+ ok.
%% The peer has never come up ...
peer_down(#peer{conn = B}, S)
@@ -1048,27 +1062,9 @@ peer_down(#peer{conn = B}, S)
S;
%% ... or it has.
-peer_down(#peer{ref = Ref,
- conn = TPid,
- type = Type,
- options = Opts}
- = P,
- #state{service_name = SvcName,
- connT = ConnT}
- = S) ->
- #conn{caps = Caps}
- = C
- = fetch(ConnT, TPid),
+peer_down(#peer{conn = TPid} = P, #state{connT = ConnT} = S) ->
+ #conn{} = C = fetch(ConnT, TPid),
ets:delete_object(ConnT, C),
- try
- pd(P,C,S)
- after
- send_event(SvcName, {closed, Ref, {TPid, Caps}, {type(Type), Opts}})
- end.
-
-pd(#peer{op_state = ?STATE_DOWN}, _, S) ->
- S;
-pd(#peer{op_state = ?STATE_UP} = P, C, S) ->
connection_down(P,C,S).
%% restart/2
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 22:22:21 +0000