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-rw-r--r--lib/snmp/src/agent/snmpa_mpd.erl57
1 files changed, 35 insertions, 22 deletions
diff --git a/lib/snmp/src/agent/snmpa_mpd.erl b/lib/snmp/src/agent/snmpa_mpd.erl
index c189a4eae2..3caed27c42 100644
--- a/lib/snmp/src/agent/snmpa_mpd.erl
+++ b/lib/snmp/src/agent/snmpa_mpd.erl
@@ -20,7 +20,7 @@
-export([init/1, reset/0, inc/1, counters/0,
discarded_pdu/1,
- process_packet/6, process_packet/7,
+ process_packet/5, process_packet/6, process_packet/7,
generate_response_msg/5, generate_response_msg/6,
generate_msg/5, generate_msg/6,
generate_discovery_msg/4,
@@ -113,22 +113,30 @@ reset() ->
% length(snmp_pdus:enc_message(M)) + 4.
%%-----------------------------------------------------------------
-%% Func: process_packet(Packet, TDomain, TAddress, State, Log) ->
+%% Func: process_packet(Packet, Domain, Address, State, Log) ->
%% {ok, SnmpVsn, Pdu, PduMS, ACMData} | {discarded, Reason}
%% Types: Packet = binary()
-%% TDomain = snmpUDPDomain | transportDomain()
-%% TAddress = {Ip, Udp} (*but* depends on TDomain)
+%% Domain = snmpUDPDomain | transportDomain()
+%% Address = {Ip, Udp} (*but* depends on Domain)
%% State = #state
%% Purpose: This is the main Message Dispatching function. (see
%% section 4.2.1 in rfc2272)
%%-----------------------------------------------------------------
-process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
+process_packet(Packet, From, State, NoteStore, Log) ->
LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
- process_packet(Packet, TDomain, TAddress, LocalEngineID,
- State, NoteStore, Log).
-
-process_packet(Packet, TDomain, TAddress, LocalEngineID,
- State, NoteStore, Log) ->
+ process_packet(Packet, From, LocalEngineID, State, NoteStore, Log).
+
+process_packet(
+ Packet, Domain, Address, LocalEngineID, State, NoteStore, Log) ->
+ From = {Domain, Address},
+ process_packet(Packet, From, LocalEngineID, State, NoteStore, Log).
+
+process_packet(Packet, Domain, Address, State, NoteStore, Log)
+ when is_atom(Domain) ->
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ From = {Domain, Address},
+ process_packet(Packet, From, LocalEngineID, State, NoteStore, Log);
+process_packet(Packet, From, LocalEngineID, State, NoteStore, Log) ->
inc(snmpInPkts),
case catch snmp_pdus:dec_message_only(binary_to_list(Packet)) of
@@ -136,17 +144,17 @@ process_packet(Packet, TDomain, TAddress, LocalEngineID,
when State#state.v1 =:= true ->
?vlog("v1, community: ~s", [Community]),
HS = ?empty_msg_size + length(Community),
- v1_v2c_proc('version-1', NoteStore, Community,
- TDomain, TAddress,
- LocalEngineID, Data, HS, Log, Packet);
+ v1_v2c_proc(
+ 'version-1', NoteStore, Community, From,
+ LocalEngineID, Data, HS, Log, Packet);
#message{version = 'version-2', vsn_hdr = Community, data = Data}
when State#state.v2c =:= true ->
?vlog("v2c, community: ~s", [Community]),
HS = ?empty_msg_size + length(Community),
- v1_v2c_proc('version-2', NoteStore, Community,
- TDomain, TAddress,
- LocalEngineID, Data, HS, Log, Packet);
+ v1_v2c_proc(
+ 'version-2', NoteStore, Community, From,
+ LocalEngineID, Data, HS, Log, Packet);
#message{version = 'version-3', vsn_hdr = V3Hdr, data = Data}
when State#state.v3 =:= true ->
@@ -154,9 +162,9 @@ process_packet(Packet, TDomain, TAddress, LocalEngineID,
[V3Hdr#v3_hdr.msgID,
V3Hdr#v3_hdr.msgFlags,
V3Hdr#v3_hdr.msgSecurityModel]),
- v3_proc(NoteStore, Packet,
- TDomain, TAddress,
- LocalEngineID, V3Hdr, Data, Log);
+ v3_proc(
+ NoteStore, Packet, From,
+ LocalEngineID, V3Hdr, Data, Log);
{'EXIT', {bad_version, Vsn}} ->
?vtrace("exit: bad version: ~p",[Vsn]),
@@ -184,7 +192,7 @@ discarded_pdu(Variable) -> inc(Variable).
%% Handles a Community based message (v1 or v2c).
%%-----------------------------------------------------------------
v1_v2c_proc(
- Vsn, NoteStore, Community, Domain, Address,
+ Vsn, NoteStore, Community, {Domain, Address},
LocalEngineID, Data, HS, Log, Packet) ->
try snmp_conf:mk_tdomain(Domain) of
TDomain ->
@@ -263,8 +271,7 @@ sec_model('version-2') -> ?SEC_V2C.
%% Handles a SNMPv3 Message, following the procedures in rfc2272,
%% section 4.2 and 7.2
%%-----------------------------------------------------------------
-v3_proc(NoteStore, Packet, _TDomain, _TAddress, LocalEngineID,
- V3Hdr, Data, Log) ->
+v3_proc(NoteStore, Packet, _From, LocalEngineID, V3Hdr, Data, Log) ->
case (catch v3_proc(NoteStore, Packet, LocalEngineID, V3Hdr, Data, Log)) of
{'EXIT', Reason} ->
exit(Reason);
@@ -1182,6 +1189,9 @@ mk_v1_v2_packet_list([{Domain, Addr} | T],
%% Sending from default UDP port
inc_snmp_out_vars(Pdu),
Entry = {Domain, Addr, Packet},
+ %% It would be cleaner to return {To, Packet} to not
+ %% break the abstraction for an address on the
+ %% {Domain, Address} format.
mk_v1_v2_packet_list(T, Packet, Len, Pdu, [Entry | Acc]).
@@ -1288,6 +1298,9 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
req_id = Pdu#pdu.request_id},
snmp_note_store:set_note(NoteStore, 1500, CacheKey, CacheVal),
inc_snmp_out_vars(Pdu),
+ %% It would be cleaner to return {To, Packet} to not
+ %% break the abstraction for an address on the
+ %% {Domain, Address} format.
{ok, {Domain, Addr, Data}}
end.