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authorAnders Svensson <[email protected]>2015-05-17 15:18:04 +0200
committerAnders Svensson <[email protected]>2015-05-18 14:10:44 +0200
commit2bf7cc13f218ef30979eec81749b3e899d00ba7c (patch)
tree683f6b17ba52b9bad258dc7cd9880128e8147746 /lib
parent5350bf6cbd16a02ff4edea73f3285069221d3210 (diff)
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Rename dictionary-related functions/variables
To clarify what it is that's being computed, which isn't entirely obvious. No functional change, just renaming.
Diffstat (limited to 'lib')
-rw-r--r--lib/diameter/src/base/diameter_traffic.erl112
1 files changed, 57 insertions, 55 deletions
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index e13713d3c0..707f464eb0 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -131,11 +131,11 @@ peer_down(TPid) ->
%% incr/4
%% ---------------------------------------------------------------------------
-incr(Dir, #diameter_packet{header = H}, TPid, Dict) ->
- incr(Dir, H, TPid, Dict);
+incr(Dir, #diameter_packet{header = H}, TPid, AppDict) ->
+ incr(Dir, H, TPid, AppDict);
-incr(Dir, #diameter_header{} = H, TPid, Dict) ->
- incr(TPid, {msg_id(H, Dict), Dir}).
+incr(Dir, #diameter_header{} = H, TPid, AppDict) ->
+ incr(TPid, {msg_id(H, AppDict), Dir}).
%% ---------------------------------------------------------------------------
%% incr_error/4
@@ -143,26 +143,26 @@ incr(Dir, #diameter_header{} = H, TPid, Dict) ->
%% 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, {_MsgDict, AppDict}) ->
incr_error(Dir, T, Pid, AppDict);
%% Decoded message without errors.
incr_error(recv, #diameter_packet{errors = []}, _, _) ->
ok;
-incr_error(recv = D, #diameter_packet{header = H}, TPid, Dict) ->
- incr_error(D, H, TPid, Dict);
+incr_error(recv = D, #diameter_packet{header = H}, TPid, AppDict) ->
+ incr_error(D, H, TPid, AppDict);
%% Encoded message with errors and an identifiable header ...
-incr_error(send = D, {_, _, #diameter_header{} = H}, TPid, Dict) ->
- incr_error(D, H, TPid, Dict);
+incr_error(send = D, {_, _, #diameter_header{} = H}, TPid, AppDict) ->
+ incr_error(D, H, TPid, AppDict);
%% ... 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, #diameter_header{} = H, TPid, AppDict) ->
+ incr_error(Dir, msg_id(H, AppDict), TPid);
incr_error(Dir, Id, TPid, _) ->
incr_error(Dir, Id, TPid).
@@ -179,18 +179,20 @@ incr_error(Dir, Id, TPid) ->
| Reason
when Pkt :: #diameter_packet{},
TPid :: pid(),
- DictT :: module() | {module(), module(), module()},
+ DictT :: module() | {MsgDict :: module(),
+ AppDict :: module(),
+ CommonDict:: module()},
Counter :: {'Result-Code', integer()}
| {'Experimental-Result', integer(), integer()},
Reason :: atom().
-incr_rc(Dir, Pkt, TPid, {Dict, _, _} = DictT) ->
+incr_rc(Dir, Pkt, TPid, {MsgDict, _, _} = DictT) ->
try
incr_result(Dir, Pkt, TPid, DictT)
catch
exit: {E,_} when E == no_result_code;
E == invalid_error_bit ->
- incr(TPid, {msg_id(Pkt#diameter_packet.header, Dict), Dir, E}),
+ incr(TPid, {msg_id(Pkt#diameter_packet.header, MsgDict), Dir, E}),
E
end;
@@ -308,14 +310,14 @@ recv_request(TPid, Pkt, Dict0, RecvData) -> %% from old code
%% recv_R/5
-recv_R({#diameter_app{id = Id, dictionary = Dict} = App, Caps},
+recv_R({#diameter_app{id = Id, dictionary = AppDict} = App, Caps},
TPid,
Pkt0,
Dict0,
RecvData) ->
- incr(recv, Pkt0, TPid, Dict),
- Pkt = errors(Id, diameter_codec:decode(Id, Dict, Pkt0)),
- incr_error(recv, Pkt, TPid, Dict),
+ incr(recv, Pkt0, TPid, AppDict),
+ Pkt = errors(Id, diameter_codec:decode(Id, AppDict, Pkt0)),
+ incr_error(recv, Pkt, TPid, AppDict),
{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.
@@ -530,7 +532,7 @@ send_A(T, TPid, DictT, ReqPkt, EvalPktFs, EvalFs) ->
%% answer/6
answer({reply, Ans}, _Caps, _Pkt, App, Dict0, _RecvData) ->
- {dict(App#diameter_app.dictionary, Dict0, Ans), Ans};
+ {msg_dict(App#diameter_app.dictionary, Dict0, Ans), Ans};
answer({call, Opts}, Caps, Pkt, App, Dict0, RecvData) ->
#diameter_caps{origin_host = {OH,_}}
@@ -553,23 +555,23 @@ answer({answer_message, RC} = T, Caps, Pkt, App, Dict0, _RecvData) ->
orelse ?ERROR({invalid_return, T, handle_request, App}),
answer_message(RC, Caps, Dict0, Pkt).
-%% dict/3
+%% msg_dict/3
%% An incoming answer, not yet decoded.
-dict(Dict, Dict0, #diameter_packet{header
- = #diameter_header{is_request = false,
- is_error = E},
- msg = undefined}) ->
- if E -> Dict0; true -> Dict end;
+msg_dict(AppDict, Dict0, #diameter_packet{header
+ = #diameter_header{is_request = false,
+ is_error = E},
+ msg = undefined}) ->
+ if E -> Dict0; true -> AppDict end;
-dict(Dict, Dict0, [Msg]) ->
- dict(Dict, Dict0, Msg);
+msg_dict(AppDict, Dict0, [Msg]) ->
+ msg_dict(AppDict, Dict0, Msg);
-dict(Dict, Dict0, #diameter_packet{msg = Msg}) ->
- dict(Dict, Dict0, Msg);
+msg_dict(AppDict, Dict0, #diameter_packet{msg = Msg}) ->
+ msg_dict(AppDict, Dict0, Msg);
-dict(Dict, Dict0, Msg) ->
- choose(is_answer_message(Msg, Dict0), Dict0, Dict).
+msg_dict(AppDict, Dict0, Msg) ->
+ choose(is_answer_message(Msg, Dict0), Dict0, AppDict).
is_answer_message([Name | _], _) ->
Name == 'answer-message';
@@ -682,11 +684,11 @@ is_loop(Code, Vid, OH, Dict0, Avps) ->
%% reply/5
%% Local answer ...
-reply({Dict, Ans}, TPid, {AppDict, Dict0}, Fs, ReqPkt) ->
- local(Ans, TPid, {Dict, AppDict, Dict0}, Fs, ReqPkt);
+reply({MsgDict, Ans}, TPid, {AppDict, Dict0}, Fs, ReqPkt) ->
+ local(Ans, TPid, {MsgDict, AppDict, Dict0}, Fs, ReqPkt);
%% ... or relayed.
-reply(#diameter_packet{} = Pkt, _TPid, _Dict0, Fs, _ReqPkt) ->
+reply(#diameter_packet{} = Pkt, _TPid, _DictT, Fs, _ReqPkt) ->
eval_packet(Pkt, Fs),
Pkt.
@@ -701,10 +703,10 @@ local([Msg], TPid, DictT, Fs, ReqPkt)
is_tuple(Msg) ->
local(Msg, TPid, DictT, Fs, ReqPkt#diameter_packet{errors = []});
-local(Msg, TPid, {Dict, AppDict, Dict0} = DictT, Fs, ReqPkt) ->
- Pkt = encode({Dict, AppDict},
+local(Msg, TPid, {MsgDict, AppDict, Dict0} = DictT, Fs, ReqPkt) ->
+ Pkt = encode({MsgDict, AppDict},
TPid,
- reset(make_answer_packet(Msg, ReqPkt), Dict, Dict0),
+ reset(make_answer_packet(Msg, ReqPkt), MsgDict, Dict0),
Fs),
incr(send, Pkt, TPid, AppDict),
incr_rc(send, Pkt, TPid, DictT), %% count outgoing
@@ -1075,7 +1077,7 @@ incr_result(_, #diameter_packet{msg = undefined = No}, _, _) ->
%% Incoming or outgoing. Outgoing with encode errors never gets here
%% since encode fails.
-incr_result(Dir, Pkt, TPid, {Dict, AppDict, Dict0}) ->
+incr_result(Dir, Pkt, TPid, {MsgDict, AppDict, Dict0}) ->
#diameter_packet{header = #diameter_header{is_error = E}
= Hdr,
errors = Es}
@@ -1090,32 +1092,32 @@ incr_result(Dir, Pkt, TPid, {Dict, AppDict, Dict0}) ->
recv /= Dir orelse [] == Es orelse incr_error(Dir, Id, TPid, AppDict),
%% Exit on a missing result code.
- T = rc_counter(Dict, Dir, Pkt),
- T == false andalso ?LOGX(no_result_code, {Dict, Dir, Hdr}),
+ T = rc_counter(MsgDict, Dir, Pkt),
+ T == false andalso ?LOGX(no_result_code, {MsgDict, Dir, Hdr}),
{Ctr, RC, Avp} = T,
%% Or on an inappropriate value.
is_result(RC, E, Dict0)
- orelse ?LOGX(invalid_error_bit, {Dict, Dir, Hdr, Avp}),
+ orelse ?LOGX(invalid_error_bit, {MsgDict, Dir, Hdr, Avp}),
incr(TPid, {Id, Dir, Ctr}),
Ctr.
%% msg_id/2
-msg_id(#diameter_packet{header = H}, Dict) ->
- msg_id(H, Dict);
+msg_id(#diameter_packet{header = H}, AppDict) ->
+ msg_id(H, AppDict);
%% 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) ->
+msg_id(Hdr, AppDict) ->
{Aid, Code, R} = Id = diameter_codec:msg_id(Hdr),
- case Dict:id() of
+ case AppDict:id() of
?APP_ID_RELAY ->
{relay, R};
A ->
- unknown(A /= Aid orelse '' == Dict:msg_name(Code, 0 == R), Id)
+ unknown(A /= Aid orelse '' == AppDict:msg_name(Code, 0 == R), Id)
end.
unknown(true, {_, _, R}) ->
@@ -1442,12 +1444,12 @@ fold_record(Rec, R) ->
%% send_R/6
send_R(Pkt0,
- {TPid, Caps, #diameter_app{dictionary = Dict} = App},
+ {TPid, Caps, #diameter_app{dictionary = AppDict} = App},
Opts,
{Pid, Ref},
SvcName,
Fs) ->
- Pkt = encode(Dict, TPid, Pkt0, Fs),
+ Pkt = encode(AppDict, TPid, Pkt0, Fs),
#options{timeout = Timeout}
= Opts,
@@ -1460,7 +1462,7 @@ send_R(Pkt0,
packet = Pkt0},
try
- incr(send, Pkt, TPid, Dict),
+ incr(send, Pkt, TPid, AppDict),
TRef = send_request(TPid, Pkt, Req, SvcName, Timeout),
Pid ! Ref, %% tell caller a send has been attempted
handle_answer(SvcName,
@@ -1500,10 +1502,10 @@ handle_answer(SvcName,
id = Id}
= App,
{answer, Req, Dict0, Pkt}) ->
- Dict = dict(AppDict, Dict0, Pkt),
- handle_A(errors(Id, diameter_codec:decode({Dict, AppDict}, Pkt)),
+ MsgDict = msg_dict(AppDict, Dict0, Pkt),
+ handle_A(errors(Id, diameter_codec:decode({MsgDict, AppDict}, Pkt)),
SvcName,
- Dict,
+ MsgDict,
Dict0,
App,
Req).
@@ -1773,19 +1775,19 @@ retransmit(T, {_, _, App}, _, _, _, _) ->
?ERROR({invalid_return, T, prepare_retransmit, App}).
resend_request(Pkt0,
- {TPid, Caps, #diameter_app{dictionary = Dict}},
+ {TPid, Caps, #diameter_app{dictionary = AppDict}},
Req0,
SvcName,
Tmo,
Fs) ->
- Pkt = encode(Dict, TPid, Pkt0, Fs),
+ Pkt = encode(AppDict, TPid, Pkt0, Fs),
Req = Req0#request{transport = TPid,
packet = Pkt0,
caps = Caps},
?LOG(retransmission, Pkt#diameter_packet.header),
- incr(TPid, {msg_id(Pkt, Dict), send, retransmission}),
+ incr(TPid, {msg_id(Pkt, AppDict), send, retransmission}),
TRef = send_request(TPid, Pkt, Req, SvcName, Tmo),
{TRef, Req}.