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-rw-r--r--lib/snmp/src/agent/snmpa.erl15
-rw-r--r--lib/snmp/src/agent/snmpa_agent.erl223
-rw-r--r--lib/snmp/src/agent/snmpa_internal.hrl12
-rw-r--r--lib/snmp/src/agent/snmpa_mpd.erl226
-rw-r--r--lib/snmp/src/agent/snmpa_trap.erl95
-rw-r--r--lib/snmp/src/agent/snmpa_usm.erl74
6 files changed, 440 insertions, 205 deletions
diff --git a/lib/snmp/src/agent/snmpa.erl b/lib/snmp/src/agent/snmpa.erl
index 1c37d76074..87b191caed 100644
--- a/lib/snmp/src/agent/snmpa.erl
+++ b/lib/snmp/src/agent/snmpa.erl
@@ -61,7 +61,7 @@
register_subagent/3, unregister_subagent/2,
send_notification/3, send_notification/4, send_notification/5,
- send_notification/6,
+ send_notification/6, send_notification/7,
send_trap/3, send_trap/4,
discovery/2, discovery/3, discovery/4, discovery/5, discovery/6,
@@ -423,14 +423,23 @@ send_notification(Agent, Notification, Recv, Varbinds) ->
send_notification(Agent, Notification, Recv, NotifyName, Varbinds) ->
send_notification(Agent, Notification, Recv, NotifyName, "", Varbinds).
-send_notification(Agent, Notification, Recv,
- NotifyName, ContextName, Varbinds)
+send_notification(Agent, Notification, Recv, NotifyName,
+ ContextName, Varbinds)
when (is_list(NotifyName) andalso
is_list(ContextName) andalso
is_list(Varbinds)) ->
snmpa_agent:send_trap(Agent, Notification, NotifyName,
ContextName, Recv, Varbinds).
+send_notification(Agent, Notification, Recv,
+ NotifyName, ContextName, Varbinds, LocalEngineID)
+ when (is_list(NotifyName) andalso
+ is_list(ContextName) andalso
+ is_list(Varbinds) andalso
+ is_list(LocalEngineID)) ->
+ snmpa_agent:send_trap(Agent, Notification, NotifyName,
+ ContextName, Recv, Varbinds, LocalEngineID).
+
%% Kept for backwards compatibility
send_trap(Agent, Trap, Community) ->
send_notification(Agent, Trap, no_receiver, Community, "", []).
diff --git a/lib/snmp/src/agent/snmpa_agent.erl b/lib/snmp/src/agent/snmpa_agent.erl
index 648f5b53fa..f70885b2ec 100644
--- a/lib/snmp/src/agent/snmpa_agent.erl
+++ b/lib/snmp/src/agent/snmpa_agent.erl
@@ -30,7 +30,7 @@
-export([subagent_set/2,
load_mibs/2, unload_mibs/2, which_mibs/1, whereis_mib/2, info/1,
register_subagent/3, unregister_subagent/2,
- send_trap/6,
+ send_trap/6, send_trap/7,
register_notification_filter/5,
unregister_notification_filter/2,
which_notification_filter/1,
@@ -65,7 +65,7 @@
%% Internal exports
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3, tr_var/2, tr_varbind/1,
- handle_pdu/7, worker/2, worker_loop/1, do_send_trap/6]).
+ handle_pdu/7, worker/2, worker_loop/1, do_send_trap/7]).
-ifndef(default_verbosity).
-define(default_verbosity,silence).
@@ -529,14 +529,15 @@ which_notification_filter(Agent) ->
send_trap(Agent, Trap, NotifyName, CtxName, Recv, Varbinds) ->
?d("send_trap -> entry with"
- "~n self(): ~p"
- "~n Agent: ~p [~p]"
- "~n Trap: ~p"
- "~n NotifyName: ~p"
- "~n CtxName: ~p"
- "~n Recv: ~p"
- "~n Varbinds: ~p",
- [self(), Agent, wis(Agent), Trap, NotifyName, CtxName, Recv, Varbinds]),
+ "~n self(): ~p"
+ "~n Agent: ~p [~p]"
+ "~n Trap: ~p"
+ "~n NotifyName: ~p"
+ "~n CtxName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p",
+ [self(), Agent, wis(Agent),
+ Trap, NotifyName, CtxName, Recv, Varbinds]),
Msg = {send_trap, Trap, NotifyName, CtxName, Recv, Varbinds},
case (wis(Agent) =:= self()) of
false ->
@@ -545,6 +546,27 @@ send_trap(Agent, Trap, NotifyName, CtxName, Recv, Varbinds) ->
Agent ! Msg
end.
+send_trap(Agent, Trap, NotifyName, CtxName, Recv, Varbinds, LocalEngineID) ->
+ ?d("send_trap -> entry with"
+ "~n self(): ~p"
+ "~n Agent: ~p [~p]"
+ "~n Trap: ~p"
+ "~n NotifyName: ~p"
+ "~n CtxName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p"
+ "~n LocalEngineID: ~p",
+ [self(), Agent, wis(Agent),
+ Trap, NotifyName, CtxName, Recv, Varbinds, LocalEngineID]),
+ Msg =
+ {send_trap, Trap, NotifyName, CtxName, Recv, Varbinds, LocalEngineID},
+ case (wis(Agent) =:= self()) of
+ false ->
+ call(Agent, Msg);
+ true ->
+ Agent ! Msg
+ end.
+
%% -- Discovery functions --
@@ -631,6 +653,7 @@ wis(Pid) when is_pid(Pid) ->
wis(Atom) when is_atom(Atom) ->
whereis(Atom).
+
forward_trap(Agent, TrapRecord, NotifyName, CtxName, Recv, Varbinds) ->
Agent ! {forward_trap, TrapRecord, NotifyName, CtxName, Recv, Varbinds}.
@@ -724,14 +747,36 @@ handle_info(worker_available, S) ->
handle_info({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds}, S) ->
?vlog("[handle_info] send trap request:"
- "~n Trap: ~p"
- "~n NotifyName: ~p"
- "~n ContextName: ~p"
- "~n Recv: ~p"
- "~n Varbinds: ~p",
- [Trap,NotifyName,ContextName,Recv,Varbinds]),
+ "~n Trap: ~p"
+ "~n NotifyName: ~p"
+ "~n ContextName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p",
+ [Trap, NotifyName, ContextName, Recv, Varbinds]),
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ case catch handle_send_trap(S, Trap, NotifyName, ContextName,
+ Recv, Varbinds, LocalEngineID) of
+ {ok, NewS} ->
+ {noreply, NewS};
+ {'EXIT', R} ->
+ ?vinfo("Trap not sent:~n ~p", [R]),
+ {noreply, S};
+ _ ->
+ {noreply, S}
+ end;
+
+handle_info({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds,
+ LocalEngineID}, S) ->
+ ?vlog("[handle_info] send trap request:"
+ "~n Trap: ~p"
+ "~n NotifyName: ~p"
+ "~n ContextName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p"
+ "~n LocalEngineID: ~p",
+ [Trap, NotifyName, ContextName, Recv, Varbinds, LocalEngineID]),
case catch handle_send_trap(S, Trap, NotifyName, ContextName,
- Recv, Varbinds) of
+ Recv, Varbinds, LocalEngineID) of
{ok, NewS} ->
{noreply, NewS};
{'EXIT', R} ->
@@ -741,17 +786,18 @@ handle_info({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds}, S) ->
{noreply, S}
end;
-handle_info({forward_trap, TrapRecord, NotifyName, ContextName,
- Recv, Varbinds},S) ->
+handle_info({forward_trap, TrapRecord, NotifyName, ContextName,
+ Recv, Varbinds}, S) ->
?vlog("[handle_info] forward trap request:"
- "~n TrapRecord: ~p"
- "~n NotifyName: ~p"
- "~n ContextName: ~p"
- "~n Recv: ~p"
- "~n Varbinds: ~p",
- [TrapRecord,NotifyName,ContextName,Recv,Varbinds]),
+ "~n TrapRecord: ~p"
+ "~n NotifyName: ~p"
+ "~n ContextName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p",
+ [TrapRecord, NotifyName, ContextName, Recv, Varbinds]),
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
case (catch maybe_send_trap(S, TrapRecord, NotifyName, ContextName,
- Recv, Varbinds)) of
+ Recv, Varbinds, LocalEngineID)) of
{ok, NewS} ->
{noreply, NewS};
{'EXIT', R} ->
@@ -861,17 +907,29 @@ handle_call(restart_set_worker, _From, #state{set_worker = Pid} = S) ->
ok
end,
{reply, ok, S};
+
handle_call({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds},
_From, S) ->
?vlog("[handle_call] send trap request:"
- "~n Trap: ~p"
- "~n NotifyName: ~p"
- "~n ContextName: ~p"
- "~n Recv: ~p"
- "~n Varbinds: ~p",
- [Trap,NotifyName,ContextName,Recv,Varbinds]),
+ "~n Trap: ~p"
+ "~n NotifyName: ~p"
+ "~n ContextName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p",
+ [Trap, NotifyName, ContextName, Recv, Varbinds]),
+ LocalEngineID =
+ case S#state.type of
+ master_agent ->
+ ?DEFAULT_LOCAL_ENGINE_ID;
+ _ ->
+ %% subagent -
+ %% we don't need this, eventually the trap sent request
+ %% will reach the master-agent and then it will look up
+ %% the proper engine id.
+ ignore
+ end,
case (catch handle_send_trap(S, Trap, NotifyName, ContextName,
- Recv, Varbinds)) of
+ Recv, Varbinds, LocalEngineID)) of
{ok, NewS} ->
{reply, ok, NewS};
{'EXIT', Reason} ->
@@ -881,8 +939,33 @@ handle_call({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds},
?vinfo("Trap not sent", []),
{reply, {error, send_failed}, S}
end;
+
+handle_call({send_trap, Trap, NotifyName,
+ ContextName, Recv, Varbinds, LocalEngineID},
+ _From, S) ->
+ ?vlog("[handle_call] send trap request:"
+ "~n Trap: ~p"
+ "~n NotifyName: ~p"
+ "~n ContextName: ~p"
+ "~n Recv: ~p"
+ "~n Varbinds: ~p"
+ "~n LocalEngineID: ~p",
+ [Trap, NotifyName, ContextName, Recv, Varbinds, LocalEngineID]),
+ case (catch handle_send_trap(S, Trap, NotifyName, ContextName,
+ Recv, Varbinds, LocalEngineID)) of
+ {ok, NewS} ->
+ {reply, ok, NewS};
+ {'EXIT', Reason} ->
+ ?vinfo("Trap not sent:~n ~p", [Reason]),
+ {reply, {error, {send_failed, Reason}}, S};
+ _ ->
+ ?vinfo("Trap not sent", []),
+ {reply, {error, send_failed}, S}
+ end;
+
handle_call({discovery,
- TargetName, Notification, ContextName, Vbs, DiscoHandler, ExtraInfo},
+ TargetName, Notification, ContextName, Vbs, DiscoHandler,
+ ExtraInfo},
From,
#state{disco = undefined} = S) ->
?vlog("[handle_call] initiate discovery process:"
@@ -1439,17 +1522,20 @@ spawn_thread(Vsn, Pdu, PduMS, ACMData, Address, Extra) ->
Args = [Vsn, Pdu, PduMS, ACMData, Address, Extra, Dict],
proc_lib:spawn_link(?MODULE, handle_pdu, Args).
-spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, V) ->
+spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID) ->
Dict = get(),
proc_lib:spawn_link(?MODULE, do_send_trap,
- [TrapRec, NotifyName, ContextName, Recv, V, Dict]).
+ [TrapRec, NotifyName, ContextName,
+ Recv, Vbs, LocalEngineID, Dict]).
-do_send_trap(TrapRec, NotifyName, ContextName, Recv, V, Dict) ->
+do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID, Dict) ->
lists:foreach(fun({Key, Val}) -> put(Key, Val) end, Dict),
put(sname,trap_sender_short_name(get(sname))),
?vlog("starting",[]),
- snmpa_trap:send_trap(TrapRec, NotifyName, ContextName, Recv, V,
- get(net_if)).
+ snmpa_trap:send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID, get(net_if)).
worker(Master, Dict) ->
lists:foreach(fun({Key, Val}) -> put(Key, Val) end, Dict),
@@ -1464,17 +1550,22 @@ worker_loop(Master) ->
handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra),
Master ! worker_available;
- %% Old style message
- {MibView, Vsn, Pdu, PduMS, ACMData, AgentData, Extra} ->
- ?vtrace("worker_loop -> received (old) request", []),
- do_handle_pdu(MibView, Vsn, Pdu, PduMS, ACMData, AgentData, Extra),
+ %% We don't trap exits!
+ {TrapRec, NotifyName, ContextName, Recv, Vbs} ->
+ ?vtrace("worker_loop -> send trap:"
+ "~n ~p", [TrapRec]),
+ snmpa_trap:send_trap(TrapRec, NotifyName,
+ ContextName, Recv, Vbs, get(net_if)),
Master ! worker_available;
- {TrapRec, NotifyName, ContextName, Recv, V} -> % We don't trap exits!
+ %% We don't trap exits!
+ {send_trap,
+ TrapRec, NotifyName, ContextName, Recv, Vbs, LocalEngineID} ->
?vtrace("worker_loop -> send trap:"
"~n ~p", [TrapRec]),
snmpa_trap:send_trap(TrapRec, NotifyName,
- ContextName, Recv, V, get(net_if)),
+ ContextName, Recv, Vbs, LocalEngineID,
+ get(net_if)),
Master ! worker_available;
{verbosity, Verbosity} ->
@@ -1623,13 +1714,15 @@ handle_acm_error(Vsn, Reason, Pdu, ACMData, Address, Extra) ->
end.
-handle_send_trap(S, TrapName, NotifyName, ContextName, Recv, Varbinds) ->
+handle_send_trap(S, TrapName, NotifyName, ContextName, Recv, Varbinds,
+ LocalEngineID) ->
?vtrace("handle_send_trap -> entry with"
- "~n S#state.type: ~p"
- "~n TrapName: ~p"
- "~n NotifyName: ~p"
- "~n ContextName: ~p",
- [S#state.type, TrapName, NotifyName, ContextName]),
+ "~n S#state.type: ~p"
+ "~n TrapName: ~p"
+ "~n NotifyName: ~p"
+ "~n ContextName: ~p"
+ "~n LocalEngineID: ~p",
+ [S#state.type, TrapName, NotifyName, ContextName, LocalEngineID]),
case snmpa_trap:construct_trap(TrapName, Varbinds) of
{ok, TrapRecord, VarList} ->
?vtrace("handle_send_trap -> construction complete: "
@@ -1646,7 +1739,8 @@ handle_send_trap(S, TrapName, NotifyName, ContextName, Recv, Varbinds) ->
?vtrace("handle_send_trap -> "
"[master] handle send trap",[]),
maybe_send_trap(S, TrapRecord, NotifyName,
- ContextName, Recv, VarList)
+ ContextName, Recv, VarList,
+ LocalEngineID)
end;
error ->
error
@@ -1683,7 +1777,8 @@ maybe_forward_trap(#state{parent = Parent, nfilters = NFs} = S,
maybe_send_trap(#state{nfilters = NFs} = S,
- TrapRec, NotifyName, ContextName, Recv, Varbinds) ->
+ TrapRec, NotifyName, ContextName, Recv, Varbinds,
+ LocalEngineID) ->
?vtrace("maybe_send_trap -> entry with"
"~n NFs: ~p", [NFs]),
case filter_notification(NFs, [], TrapRec) of
@@ -1700,39 +1795,45 @@ maybe_send_trap(#state{nfilters = NFs} = S,
?vtrace("maybe_send_trap -> send trap:"
"~n ~p", [TrapRec2]),
do_handle_send_trap(S, TrapRec2,
- NotifyName, ContextName, Recv, Varbinds);
+ NotifyName, ContextName, Recv, Varbinds,
+ LocalEngineID);
{send, Removed, TrapRec2} ->
?vtrace("maybe_send_trap -> send trap:"
"~n ~p", [TrapRec2]),
NFs2 = del_notification_filter(Removed, NFs),
do_handle_send_trap(S#state{nfilters = NFs2}, TrapRec2,
- NotifyName, ContextName, Recv, Varbinds)
+ NotifyName, ContextName, Recv, Varbinds,
+ LocalEngineID)
end.
-do_handle_send_trap(S, TrapRec, NotifyName, ContextName, Recv, Varbinds) ->
- V = snmpa_trap:try_initialise_vars(get(mibserver), Varbinds),
+do_handle_send_trap(S, TrapRec, NotifyName, ContextName, Recv, Varbinds,
+ LocalEngineID) ->
+ Vbs = snmpa_trap:try_initialise_vars(get(mibserver), Varbinds),
case S#state.type of
subagent ->
forward_trap(S#state.parent, TrapRec, NotifyName, ContextName,
- Recv, V),
+ Recv, Vbs),
{ok, S};
master_agent when S#state.multi_threaded =:= false ->
?vtrace("do_handle_send_trap -> send trap:"
"~n ~p", [TrapRec]),
snmpa_trap:send_trap(TrapRec, NotifyName, ContextName,
- Recv, V, get(net_if)),
+ Recv, Vbs, LocalEngineID, get(net_if)),
{ok, S};
master_agent when S#state.worker_state =:= busy ->
%% Main worker busy => create new worker
?vtrace("do_handle_send_trap -> main worker busy: "
"spawn a trap sender", []),
- spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, V),
+ spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID),
{ok, S};
master_agent ->
%% Send to main worker
?vtrace("do_handle_send_trap -> send to main worker",[]),
- S#state.worker ! {TrapRec, NotifyName, ContextName, Recv, V},
+ S#state.worker ! {send_trap,
+ TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID},
{ok, S#state{worker_state = busy}}
end.
diff --git a/lib/snmp/src/agent/snmpa_internal.hrl b/lib/snmp/src/agent/snmpa_internal.hrl
index a33a6809dc..9fa874f119 100644
--- a/lib/snmp/src/agent/snmpa_internal.hrl
+++ b/lib/snmp/src/agent/snmpa_internal.hrl
@@ -1,19 +1,19 @@
%%
%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
-%%
+%%
+%% Copyright Ericsson AB 2006-2010. 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
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
-%%
+%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
-%%
+%%
%% %CopyrightEnd%
%%
@@ -22,6 +22,8 @@
-include_lib("snmp/src/app/snmp_internal.hrl").
+-define(DEFAULT_LOCAL_ENGINE_ID, snmp_framework_mib:get_engine_id()).
+
-define(snmpa_info(F, A), ?snmp_info("agent", F, A)).
-define(snmpa_warning(F, A), ?snmp_warning("agent", F, A)).
-define(snmpa_error(F, A), ?snmp_error("agent", F, A)).
diff --git a/lib/snmp/src/agent/snmpa_mpd.erl b/lib/snmp/src/agent/snmpa_mpd.erl
index 2e09286b87..fd75b98f84 100644
--- a/lib/snmp/src/agent/snmpa_mpd.erl
+++ b/lib/snmp/src/agent/snmpa_mpd.erl
@@ -1,27 +1,28 @@
%%
%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
-%%
+%%
+%% Copyright Ericsson AB 1997-2010. 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
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
-%%
+%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
-%%
+%%
%% %CopyrightEnd%
%%
-module(snmpa_mpd).
-export([init/1, reset/0, inc/1, counters/0,
discarded_pdu/1,
- process_packet/6,
- generate_response_msg/5, generate_msg/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,
process_taddrs/1,
generate_req_id/0]).
@@ -34,6 +35,7 @@
-define(VMODULE,"MPD").
-include("snmp_verbosity.hrl").
+-include("snmpa_internal.hrl").
-define(empty_msg_size, 24).
@@ -120,6 +122,12 @@ reset() ->
%% section 4.2.1 in rfc2272)
%%-----------------------------------------------------------------
process_packet(Packet, TDomain, TAddress, 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) ->
inc(snmpInPkts),
case catch snmp_pdus:dec_message_only(binary_to_list(Packet)) of
@@ -127,15 +135,17 @@ process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
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,
- Data, HS, Log, Packet);
+ v1_v2c_proc('version-1', NoteStore, Community,
+ TDomain, TAddress,
+ 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,
- Data, HS, Log, Packet);
+ v1_v2c_proc('version-2', NoteStore, Community,
+ TDomain, TAddress,
+ LocalEngineID, Data, HS, Log, Packet);
#message{version = 'version-3', vsn_hdr = V3Hdr, data = Data}
when State#state.v3 =:= true ->
@@ -143,7 +153,9 @@ process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
[V3Hdr#v3_hdr.msgID,
V3Hdr#v3_hdr.msgFlags,
V3Hdr#v3_hdr.msgSecurityModel]),
- v3_proc(NoteStore, Packet, TDomain, TAddress, V3Hdr, Data, Log);
+ v3_proc(NoteStore, Packet,
+ TDomain, TAddress,
+ LocalEngineID, V3Hdr, Data, Log);
{'EXIT', {bad_version, Vsn}} ->
?vtrace("exit: bad version: ~p",[Vsn]),
@@ -170,10 +182,11 @@ discarded_pdu(Variable) -> inc(Variable).
%%-----------------------------------------------------------------
%% Handles a Community based message (v1 or v2c).
%%-----------------------------------------------------------------
-v1_v2c_proc(Vsn, NoteStore, Community, snmpUDPDomain, {Ip, Udp},
+v1_v2c_proc(Vsn, NoteStore, Community, snmpUDPDomain,
+ {Ip, Udp}, LocalEngineID,
Data, HS, Log, Packet) ->
TAddress = tuple_to_list(Ip) ++ [Udp div 256, Udp rem 256],
- AgentMS = snmp_framework_mib:get_engine_max_message_size(),
+ AgentMS = get_engine_max_message_size(LocalEngineID),
MgrMS = snmp_community_mib:get_target_addr_ext_mms(?snmpUDPDomain,
TAddress),
PduMS = case MgrMS of
@@ -220,10 +233,10 @@ v1_v2c_proc(Vsn, NoteStore, Community, snmpUDPDomain, {Ip, Udp},
{discarded, trap_pdu}
end;
v1_v2c_proc(_Vsn, _NoteStore, _Community, snmpUDPDomain, TAddress,
- _Data, _HS, _Log, _Packet) ->
+ _LocalEngineID, _Data, _HS, _Log, _Packet) ->
{discarded, {badarg, TAddress}};
v1_v2c_proc(_Vsn, _NoteStore, _Community, TDomain, _TAddress,
- _Data, _HS, _Log, _Packet) ->
+ _LocalEngineID, _Data, _HS, _Log, _Packet) ->
{discarded, {badarg, TDomain}}.
sec_model('version-1') -> ?SEC_V1;
@@ -234,15 +247,19 @@ 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, V3Hdr, Data, Log) ->
- case (catch v3_proc(NoteStore, Packet, V3Hdr, Data, Log)) of
+v3_proc(NoteStore, Packet, _TDomain, _TAddress, LocalEngineID,
+ V3Hdr, Data, Log) ->
+ case (catch v3_proc(NoteStore, Packet, LocalEngineID, V3Hdr, Data, Log)) of
{'EXIT', Reason} ->
exit(Reason);
Result ->
Result
end.
-v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
+v3_proc(NoteStore, Packet, LocalEngineID, V3Hdr, Data, Log) ->
+ ?vtrace("v3_proc -> entry with"
+ "~n LocalEngineID: ~p",
+ [LocalEngineID]),
%% 7.2.3
#v3_hdr{msgID = MsgID,
msgMaxSize = MMS,
@@ -250,7 +267,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
msgSecurityModel = MsgSecurityModel,
msgSecurityParameters = SecParams,
hdr_size = HdrSize} = V3Hdr,
- ?vdebug("v3_proc -> version 3 message header:"
+ ?vdebug("v3_proc -> version 3 message header [7.2.3]:"
"~n msgID = ~p"
"~n msgMaxSize = ~p"
"~n msgFlags = ~p"
@@ -263,17 +280,19 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
SecLevel = check_sec_level(MsgFlags),
IsReportable = snmp_misc:is_reportable(MsgFlags),
%% 7.2.6
- ?vtrace("v3_proc -> "
+ ?vtrace("v3_proc -> [7.2.6]"
"~n SecModule = ~p"
"~n SecLevel = ~p"
"~n IsReportable = ~p",
- [SecModule,SecLevel,IsReportable]),
+ [SecModule, SecLevel, IsReportable]),
SecRes = (catch SecModule:process_incoming_msg(Packet, Data,
- SecParams, SecLevel)),
+ SecParams, SecLevel,
+ LocalEngineID)),
?vtrace("v3_proc -> message processing result: "
"~n SecRes: ~p", [SecRes]),
{SecEngineID, SecName, ScopedPDUBytes, SecData, DiscoOrPlain} =
- check_sec_module_result(SecRes, V3Hdr, Data, IsReportable, Log),
+ check_sec_module_result(SecRes, V3Hdr, Data,
+ LocalEngineID, IsReportable, Log),
?vtrace("v3_proc -> "
"~n DiscoOrPlain: ~w"
"~n SecEngineID: ~w"
@@ -311,7 +330,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
Log(PDU#pdu.type, Packet)
end,
%% Make sure a get_bulk doesn't get too big.
- AgentMS = snmp_framework_mib:get_engine_max_message_size(),
+ AgentMS = get_engine_max_message_size(LocalEngineID),
%% PduMMS is supposed to be the maximum total length of the response
%% PDU we can send. From the MMS, we need to subtract everything before
%% the PDU, i.e. Message and ScopedPDU.
@@ -415,8 +434,8 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
throw({discarded, received_v2_trap});
Type ->
%% 7.2.13
- SnmpEngineID = snmp_framework_mib:get_engine_id(),
- ?vtrace("v3_proc -> SnmpEngineID = ~w", [SnmpEngineID]),
+ SnmpEngineID = LocalEngineID,
+ ?vtrace("v3_proc -> 7.2.13", []),
case SecEngineID of
SnmpEngineID when (DiscoOrPlain =:= discovery) ->
%% This is a discovery step 2 message!
@@ -429,6 +448,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
ContextName,
SecData,
PDU,
+ LocalEngineID,
Log);
SnmpEngineID when (DiscoOrPlain =:= plain) ->
@@ -444,17 +464,18 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
%% 4.2.2.1.2
NIsReportable = snmp_misc:is_reportable_pdu(Type),
Val = inc(snmpUnknownPDUHandlers),
- ErrorInfo = {#varbind{oid = ?snmpUnknownPDUHandlers,
- variabletype = 'Counter32',
- value = Val},
- SecName,
- [{securityLevel, SecLevel},
- {contextEngineID, ContextEngineID},
- {contextName, ContextName}]},
+ ErrorInfo =
+ {#varbind{oid = ?snmpUnknownPDUHandlers,
+ variabletype = 'Counter32',
+ value = Val},
+ SecName,
+ [{securityLevel, SecLevel},
+ {contextEngineID, ContextEngineID},
+ {contextName, ContextName}]},
case generate_v3_report_msg(MsgID,
MsgSecurityModel,
- Data, ErrorInfo,
- Log) of
+ Data, LocalEngineID,
+ ErrorInfo, Log) of
{ok, Report} when NIsReportable =:= true ->
{discarded, snmpUnknownPDUHandlers, Report};
_ ->
@@ -473,6 +494,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
ContextName,
SecData,
PDU,
+ LocalEngineID,
Log);
_ ->
@@ -501,7 +523,7 @@ check_sec_level(Unknown) ->
inc(snmpInvalidMsgs),
throw({discarded, snmpInvalidMsgs}).
-check_sec_module_result(Res, V3Hdr, Data, IsReportable, Log) ->
+check_sec_module_result(Res, V3Hdr, Data, LocalEngineID, IsReportable, Log) ->
case Res of
{ok, X} ->
X;
@@ -516,7 +538,7 @@ check_sec_module_result(Res, V3Hdr, Data, IsReportable, Log) ->
#v3_hdr{msgID = MsgID, msgSecurityModel = MsgSecModel} = V3Hdr,
Pdu = get_scoped_pdu(Data),
case generate_v3_report_msg(MsgID, MsgSecModel, Pdu,
- ErrorInfo, Log) of
+ LocalEngineID, ErrorInfo, Log) of
{ok, Report} ->
throw({discarded, {securityError, Reason}, Report});
{discarded, _SomeOtherReason} ->
@@ -545,8 +567,15 @@ get_scoped_pdu(D) ->
generate_response_msg(Vsn, RePdu, Type, ACMData, Log) ->
generate_response_msg(Vsn, RePdu, Type, ACMData, Log, 1).
+generate_response_msg(Vsn, RePdu, Type, ACMData, Log, N) when is_integer(N) ->
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log, N);
+generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log) ->
+ generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log, 1).
+
generate_response_msg(Vsn, RePdu, Type,
{community, _SecModel, Community, _IpUdp},
+ LocalEngineID,
Log, _) ->
case catch snmp_pdus:enc_pdu(RePdu) of
{'EXIT', Reason} ->
@@ -555,8 +584,9 @@ generate_response_msg(Vsn, RePdu, Type,
[RePdu, Community, Reason]),
{discarded, Reason};
PduBytes ->
- Message = #message{version = Vsn, vsn_hdr = Community,
- data = PduBytes},
+ Message = #message{version = Vsn,
+ vsn_hdr = Community,
+ data = PduBytes},
case catch list_to_binary(
snmp_pdus:enc_message_only(Message)) of
{'EXIT', Reason} ->
@@ -565,7 +595,7 @@ generate_response_msg(Vsn, RePdu, Type,
[RePdu, Community, Reason]),
{discarded, Reason};
Packet ->
- MMS = snmp_framework_mib:get_engine_max_message_size(),
+ MMS = get_engine_max_message_size(LocalEngineID),
case size(Packet) of
Len when Len =< MMS ->
Log(Type, Packet),
@@ -584,6 +614,7 @@ generate_response_msg(Vsn, RePdu, Type,
generate_response_msg(Vsn, RePdu, Type,
{v3, MsgID, MsgSecurityModel, SecName, SecLevel,
ContextEngineID, ContextName, SecData},
+ LocalEngineID,
Log, N) ->
%% rfc2272: 7.1 steps 6-8
ScopedPDU = #scopedPdu{contextEngineID = ContextEngineID,
@@ -596,7 +627,7 @@ generate_response_msg(Vsn, RePdu, Type,
[RePdu, ContextName, Reason]),
{discarded, Reason};
ScopedPDUBytes ->
- AgentMS = snmp_framework_mib:get_engine_max_message_size(),
+ AgentMS = get_engine_max_message_size(LocalEngineID),
V3Hdr = #v3_hdr{msgID = MsgID,
msgMaxSize = AgentMS,
msgFlags = snmp_misc:mk_msg_flags(Type, SecLevel),
@@ -611,13 +642,14 @@ generate_response_msg(Vsn, RePdu, Type,
?SEC_USM ->
snmpa_usm
end,
- SecEngineID = snmp_framework_mib:get_engine_id(),
+ SecEngineID = LocalEngineID,
?vtrace("generate_response_msg -> SecEngineID: ~w", [SecEngineID]),
case (catch SecModule:generate_outgoing_msg(Message,
SecEngineID,
SecName,
SecData,
- SecLevel)) of
+ SecLevel,
+ LocalEngineID)) of
{'EXIT', Reason} ->
config_err("~p (message: ~p)", [Reason, Message]),
{discarded, Reason};
@@ -668,12 +700,14 @@ generate_response_msg(Vsn, RePdu, Type,
SecName, SecLevel,
ContextEngineID,
ContextName,
- SecData}, Log, N+1)
+ SecData},
+ LocalEngineID, Log, N+1)
end
end
end.
-generate_v3_report_msg(MsgID, MsgSecurityModel, Data, ErrorInfo, Log) ->
+generate_v3_report_msg(MsgID, MsgSecurityModel, Data, LocalEngineID,
+ ErrorInfo, Log) ->
{Varbind, SecName, Opts} = ErrorInfo,
ReqId =
if
@@ -689,7 +723,7 @@ generate_v3_report_msg(MsgID, MsgSecurityModel, Data, ErrorInfo, Log) ->
error_index = 0,
varbinds = [Varbind]},
SecLevel = snmp_misc:get_option(securityLevel, Opts, 0),
- SnmpEngineID = snmp_framework_mib:get_engine_id(),
+ SnmpEngineID = LocalEngineID,
ContextEngineID =
snmp_misc:get_option(contextEngineID, Opts, SnmpEngineID),
ContextName = snmp_misc:get_option(contextName, Opts, ""),
@@ -697,7 +731,8 @@ generate_v3_report_msg(MsgID, MsgSecurityModel, Data, ErrorInfo, Log) ->
generate_response_msg('version-3', Pdu, report,
{v3, MsgID, MsgSecurityModel, SecName, SecLevel,
- ContextEngineID, ContextName, SecData}, Log).
+ ContextEngineID, ContextName, SecData},
+ LocalEngineID, Log).
%% req_id(#scopedPdu{data = #pdu{request_id = ReqId}}) ->
%% ?vtrace("Report ReqId: ~p",[ReqId]),
@@ -719,7 +754,8 @@ generate_discovery1_report_msg(MsgID, MsgSecurityModel,
SecName, SecLevel,
ContextEngineID, ContextName,
{SecData, Oid, Value},
- #pdu{request_id = ReqId}, Log) ->
+ #pdu{request_id = ReqId},
+ LocalEngineID, Log) ->
?vtrace("generate_discovery1_report_msg -> entry with"
"~n ReqId: ~p"
"~n Value: ~p", [ReqId, Value]),
@@ -734,7 +770,8 @@ generate_discovery1_report_msg(MsgID, MsgSecurityModel,
varbinds = [Varbind]},
case generate_response_msg('version-3', PduOut, report,
{v3, MsgID, MsgSecurityModel, SecName, SecLevel,
- ContextEngineID, ContextName, SecData}, Log) of
+ ContextEngineID, ContextName, SecData},
+ LocalEngineID, Log) of
{ok, Packet} ->
{discovery, Packet};
Error ->
@@ -745,7 +782,8 @@ generate_discovery1_report_msg(MsgID, MsgSecurityModel,
generate_discovery2_report_msg(MsgID, MsgSecurityModel,
SecName, SecLevel,
ContextEngineID, ContextName,
- SecData, #pdu{request_id = ReqId}, Log) ->
+ SecData, #pdu{request_id = ReqId},
+ LocalEngineID, Log) ->
?vtrace("generate_discovery2_report_msg -> entry with"
"~n ReqId: ~p", [ReqId]),
SecModule = get_security_module(MsgSecurityModel),
@@ -757,7 +795,8 @@ generate_discovery2_report_msg(MsgID, MsgSecurityModel,
varbinds = [Vb]},
case generate_response_msg('version-3', PduOut, report,
{v3, MsgID, MsgSecurityModel, SecName, SecLevel,
- ContextEngineID, ContextName, SecData}, Log) of
+ ContextEngineID, ContextName, SecData},
+ LocalEngineID, Log) of
{ok, Packet} ->
{discovery, Packet};
Error ->
@@ -816,7 +855,11 @@ set_vb_null([]) ->
%% Executed when a message that isn't a response is generated, i.e.
%% a trap or an inform.
%%-----------------------------------------------------------------
-generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, To) ->
+generate_msg(Vsn, NoteStore, Pdu, ACMData, To) ->
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ generate_msg(Vsn, NoteStore, Pdu, ACMData, LocalEngineID, To).
+
+generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, LocalEngineID, To) ->
Message = #message{version = Vsn, vsn_hdr = Community, data = Pdu},
case catch list_to_binary(snmp_pdus:enc_message(Message)) of
{'EXIT', Reason} ->
@@ -825,7 +868,7 @@ generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, To) ->
[Pdu, Community, Reason]),
{discarded, Reason};
Packet ->
- AgentMax = snmp_framework_mib:get_engine_max_message_size(),
+ AgentMax = get_engine_max_message_size(LocalEngineID),
case size(Packet) of
Len when Len =< AgentMax ->
{ok, mk_v1_v2_packet_list(To, Packet, Len, Pdu)};
@@ -838,9 +881,9 @@ generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, To) ->
end
end;
generate_msg('version-3', NoteStore, Pdu,
- {v3, ContextEngineID, ContextName}, To) ->
- %% rfc2272: 7.1.6
- ScopedPDU = #scopedPdu{contextEngineID = ContextEngineID,
+ {v3, ContextEngineID, ContextName}, LocalEngineID, To) ->
+ %% rfc2272: 7.1 step 6
+ ScopedPDU = #scopedPdu{contextEngineID = LocalEngineID,
contextName = ContextName,
data = Pdu},
case (catch snmp_pdus:enc_scoped_pdu(ScopedPDU)) of
@@ -851,7 +894,8 @@ generate_msg('version-3', NoteStore, Pdu,
{discarded, Reason};
ScopedPDUBytes ->
{ok, mk_v3_packet_list(NoteStore, To, ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName)}
+ ContextEngineID, ContextName,
+ LocalEngineID)}
end.
@@ -1094,17 +1138,21 @@ mk_msg_flags(PduType, SecLevel) ->
mk_v3_packet_entry(NoteStore, Domain, Addr,
{SecModel, SecName, SecLevel, TargetAddrName},
- ScopedPDUBytes, Pdu, ContextEngineID, ContextName) ->
- %% 7.1.7
- ?vtrace("mk_v3_packet_entry -> entry - 7.1.7", []),
- MsgID = generate_msg_id(),
- PduType = Pdu#pdu.type,
- MsgFlags = mk_msg_flags(PduType, SecLevel),
+ ScopedPDUBytes, Pdu, _ContextEngineID, ContextName,
+ LocalEngineID) ->
+ %% rfc2272 7.1 step 77
+ ?vtrace("mk_v3_packet_entry -> entry - RFC2272-7.1:7", []),
+ MsgVersion = 'version-3', % 7.1:7a
+ MsgID = generate_msg_id(), % 7.1:7b
+ MaxMsgSz = get_max_message_size(), % 7.1:7c
+ PduType = Pdu#pdu.type,
+ MsgFlags = mk_msg_flags(PduType, SecLevel), % 7.1:7d
+ MsgSecModel = SecModel, % 7.1:7e
V3Hdr = #v3_hdr{msgID = MsgID,
- msgMaxSize = get_max_message_size(),
+ msgMaxSize = MaxMsgSz,
msgFlags = MsgFlags,
- msgSecurityModel = SecModel},
- Message = #message{version = 'version-3',
+ msgSecurityModel = MsgSecModel},
+ Message = #message{version = MsgVersion,
vsn_hdr = V3Hdr,
data = ScopedPDUBytes},
SecModule =
@@ -1113,12 +1161,21 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
snmpa_usm
end,
+ %%
+ %% 7.1:8 - If the PDU is from the Response Class or the Internal Class
+ %% securityEngineID = snmpEngineID (local/source)
+ %% 7.1:9 - If the PDU is from the Unconfirmed Class
+ %% securityEngineID = snmpEngineID (local/source)
+ %% else
+ %% securityEngineID = targetEngineID (remote/destination)
+ %%
+
%% 7.1.9a
?vtrace("mk_v3_packet_entry -> sec engine id - 7.1.9a", []),
SecEngineID =
case PduType of
'snmpv2-trap' ->
- snmp_framework_mib:get_engine_id();
+ LocalEngineID;
_ ->
%% This is the implementation dependent target engine id
%% procedure.
@@ -1141,8 +1198,9 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
?vdebug("mk_v3_packet_entry -> secEngineID: ~p", [SecEngineID]),
%% 7.1.9b
- case catch SecModule:generate_outgoing_msg(Message, SecEngineID,
- SecName, [], SecLevel) of
+ case (catch SecModule:generate_outgoing_msg(Message, SecEngineID,
+ SecName, [], SecLevel,
+ LocalEngineID)) of
{'EXIT', Reason} ->
config_err("~p (message: ~p)", [Reason, Message]),
skip;
@@ -1169,7 +1227,7 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
sec_model = SecModel,
sec_name = SecName,
sec_level = SecLevel,
- ctx_engine_id = ContextEngineID,
+ ctx_engine_id = LocalEngineID,
ctx_name = ContextName,
disco = false,
req_id = Pdu#pdu.request_id},
@@ -1180,15 +1238,16 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
mk_v3_packet_list(NoteStore, To,
- ScopedPDUBytes, Pdu, ContextEngineID, ContextName) ->
+ ScopedPDUBytes, Pdu, ContextEngineID, ContextName,
+ LocalEngineID) ->
mk_v3_packet_list(NoteStore, To,
ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName, []).
+ ContextEngineID, ContextName, LocalEngineID, []).
mk_v3_packet_list(_, [],
_ScopedPDUBytes, _Pdu,
_ContextEngineID, _ContextName,
- Acc) ->
+ _LocalEngineID, Acc) ->
lists:reverse(Acc);
%% This clause is for backward compatibillity reasons
@@ -1196,20 +1255,21 @@ mk_v3_packet_list(_, [],
mk_v3_packet_list(NoteStore,
[{{?snmpUDPDomain, [A,B,C,D,U1,U2]}, SecData} | T],
ScopedPDUBytes, Pdu, ContextEngineID, ContextName,
- Acc) ->
+ LocalEngineID, Acc) ->
case mk_v3_packet_entry(NoteStore,
snmpUDPDomain, {{A,B,C,D}, U1 bsl 8 + U2}, SecData,
ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName) of
+ ContextEngineID, ContextName, LocalEngineID) of
skip ->
mk_v3_packet_list(NoteStore, T,
ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName,
+ ContextEngineID, ContextName, LocalEngineID,
Acc);
{ok, Entry} ->
mk_v3_packet_list(NoteStore, T,
ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName, [Entry | Acc])
+ ContextEngineID, ContextName, LocalEngineID,
+ [Entry | Acc])
end;
%% This is the new clause
@@ -1218,11 +1278,11 @@ mk_v3_packet_list(NoteStore,
mk_v3_packet_list(NoteStore,
[{{Domain, Addr}, SecData} | T],
ScopedPDUBytes, Pdu, ContextEngineID, ContextName,
- Acc) ->
+ LocalEngineID, Acc) ->
case mk_v3_packet_entry(NoteStore,
Domain, Addr, SecData,
ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName) of
+ ContextEngineID, ContextName, LocalEngineID) of
skip ->
mk_v3_packet_list(NoteStore, T,
ScopedPDUBytes, Pdu,
@@ -1230,7 +1290,8 @@ mk_v3_packet_list(NoteStore,
{ok, Entry} ->
mk_v3_packet_list(NoteStore, T,
ScopedPDUBytes, Pdu,
- ContextEngineID, ContextName, [Entry | Acc])
+ ContextEngineID, ContextName,
+ LocalEngineID, [Entry | Acc])
end.
@@ -1253,6 +1314,9 @@ gen(Id) ->
get_target_engine_id(TargetAddrName) ->
snmp_target_mib:get_target_engine_id(TargetAddrName).
+get_engine_max_message_size(_LocalEngineID) ->
+ snmp_framework_mib:get_engine_max_message_size().
+
sec_module(?SEC_USM) ->
snmpa_usm.
diff --git a/lib/snmp/src/agent/snmpa_trap.erl b/lib/snmp/src/agent/snmpa_trap.erl
index b1096b1135..450cb2e9f4 100644
--- a/lib/snmp/src/agent/snmpa_trap.erl
+++ b/lib/snmp/src/agent/snmpa_trap.erl
@@ -1,19 +1,19 @@
%%
%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
-%%
+%%
+%% Copyright Ericsson AB 1996-2010. 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
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
-%%
+%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
-%%
+%%
%% %CopyrightEnd%
%%
-module(snmpa_trap).
@@ -23,14 +23,18 @@
%%%-----------------------------------------------------------------
%% External exports
-export([construct_trap/2,
- try_initialise_vars/2, send_trap/6]).
+ try_initialise_vars/2,
+ send_trap/6, send_trap/7]).
-export([send_discovery/5]).
%% Internal exports
--export([init_v2_inform/9, init_v3_inform/9, send_inform/6]).
+-export([init_v2_inform/9,
+ init_v3_inform/9, init_v3_inform/10,
+ send_inform/6]).
-export([init_discovery_inform/12, send_discovery_inform/5]).
-include("snmp_types.hrl").
+-include("snmpa_internal.hrl").
-include("SNMPv2-MIB.hrl").
-include("SNMPv2-TM.hrl").
-include("SNMPv2-TC.hrl").
@@ -331,13 +335,20 @@ make_varbind_list(Varbinds) ->
%% SnmpTargetAddrTable (using the Tag).
%%-----------------------------------------------------------------
send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, NetIf) ->
- (catch do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, NetIf)).
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID, NetIf).
+
+send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, LocalEngineID, NetIf) ->
+ (catch do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID, NetIf)).
-do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, NetIf) ->
+do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
+ LocalEngineID, NetIf) ->
VarbindList = make_varbind_list(Vbs),
Dests = find_dests(NotifyName),
send_trap_pdus(Dests, ContextName, {TrapRec, VarbindList}, [], [], [],
- Recv, NetIf).
+ Recv, LocalEngineID, NetIf).
send_discovery(TargetName, Record, ContextName, Vbs, NetIf) ->
case find_dest(TargetName) of
@@ -619,7 +630,9 @@ send_discovery_inform(Parent, Timeout, Retry, Msg, NetIf) ->
%%-----------------------------------------------------------------
send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
Type} | T],
- ContextName,{TrapRec, Vbs}, V1Res, V2Res, V3Res, Recv, NetIf) ->
+ ContextName,
+ {TrapRec, Vbs}, V1Res, V2Res, V3Res, Recv,
+ LocalEngineID, NetIf) ->
?vdebug("send trap pdus: "
"~n Destination address: ~p"
"~n Target name: ~p"
@@ -634,7 +647,7 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
case check_all_varbinds(TrapRec, Vbs, MibView) of
true when MpModel =:= ?MP_V1 ->
?vtrace("send_trap_pdus -> v1 mp model",[]),
- ContextEngineId = snmp_framework_mib:get_engine_id(),
+ ContextEngineId = LocalEngineID,
case snmp_community_mib:vacm2community({SecName,
ContextEngineId,
ContextName},
@@ -644,16 +657,18 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
[element(2, DestAddr)]),
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
[{DestAddr, Community} | V1Res],
- V2Res, V3Res, Recv, NetIf);
+ V2Res, V3Res, Recv,
+ LocalEngineID, NetIf);
undefined ->
?vdebug("No community found for v1 dest: ~p",
[element(2, DestAddr)]),
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
- V1Res, V2Res, V3Res, Recv, NetIf)
+ V1Res, V2Res, V3Res, Recv,
+ LocalEngineID, NetIf)
end;
true when MpModel =:= ?MP_V2C ->
?vtrace("send_trap_pdus -> v2c mp model",[]),
- ContextEngineId = snmp_framework_mib:get_engine_id(),
+ ContextEngineId = LocalEngineID,
case snmp_community_mib:vacm2community({SecName,
ContextEngineId,
ContextName},
@@ -664,12 +679,13 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
V1Res,
[{DestAddr, Community, Type}|V2Res],
- V3Res, Recv, NetIf);
+ V3Res, Recv, LocalEngineID, NetIf);
undefined ->
?vdebug("No community found for v2c dest: ~p",
[element(2, DestAddr)]),
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
- V1Res, V2Res, V3Res, Recv, NetIf)
+ V1Res, V2Res, V3Res, Recv,
+ LocalEngineID, NetIf)
end;
true when MpModel =:= ?MP_V3 ->
?vtrace("send_trap_pdus -> v3 mp model",[]),
@@ -678,18 +694,20 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
V1Res, V2Res,
[{DestAddr, MsgData, Type} | V3Res],
- Recv, NetIf);
+ Recv, LocalEngineID, NetIf);
true ->
?vlog("bad MpModel ~p for dest ~p",
[MpModel, element(2, DestAddr)]),
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
- V1Res, V2Res, V3Res, Recv, NetIf);
+ V1Res, V2Res, V3Res, Recv,
+ LocalEngineID, NetIf);
_ ->
?vlog("no access for dest: "
"~n ~p in target ~p",
[element(2, DestAddr), TargetName]),
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
- V1Res, V2Res, V3Res, Recv, NetIf)
+ V1Res, V2Res, V3Res, Recv,
+ LocalEngineID, NetIf)
end;
{discarded, Reason} ->
?vlog("mib view error ~p for"
@@ -697,10 +715,10 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
"~n SecName: ~w",
[Reason, element(2, DestAddr), SecName]),
send_trap_pdus(T, ContextName, {TrapRec, Vbs},
- V1Res, V2Res, V3Res, Recv, NetIf)
+ V1Res, V2Res, V3Res, Recv, LocalEngineID, NetIf)
end;
send_trap_pdus([], ContextName, {TrapRec, Vbs}, V1Res, V2Res, V3Res,
- Recv, NetIf) ->
+ Recv, LocalEngineID, NetIf) ->
SysUpTime = snmp_standard_mib:sys_up_time(),
?vdebug("send trap pdus with sysUpTime ~p", [SysUpTime]),
InformRecvs = get_inform_recvs(V2Res ++ V3Res),
@@ -708,7 +726,8 @@ send_trap_pdus([], ContextName, {TrapRec, Vbs}, V1Res, V2Res, V3Res,
deliver_recv(Recv, snmp_targets, InformTargets),
send_v1_trap(TrapRec, V1Res, Vbs, NetIf, SysUpTime),
send_v2_trap(TrapRec, V2Res, Vbs, Recv, NetIf, SysUpTime),
- send_v3_trap(TrapRec, V3Res, Vbs, Recv, NetIf, SysUpTime, ContextName).
+ send_v3_trap(TrapRec, V3Res, Vbs, Recv, LocalEngineID, NetIf,
+ SysUpTime, ContextName).
send_v1_trap(_TrapRec, [], _Vbs, _NetIf, _SysUpTime) ->
ok;
@@ -762,21 +781,25 @@ send_v2_trap(TrapRec, V2Res, Vbs, Recv, NetIf, SysUpTime) ->
do_send_v2_trap(TrapRecvs, IVbs, NetIf),
do_send_v2_inform(InformRecvs, IVbs, Recv, NetIf).
-send_v3_trap(_TrapRec, [], _Vbs, _Recv, _NetIf, _SysUpTime, _ContextName) ->
+send_v3_trap(_TrapRec, [], _Vbs, _Recv, _LocalEngineID,
+ _NetIf, _SysUpTime, _ContextName) ->
ok;
-send_v3_trap(TrapRec, V3Res, Vbs, Recv, NetIf, SysUpTime, ContextName) ->
+send_v3_trap(TrapRec, V3Res, Vbs, Recv, LocalEngineID,
+ NetIf, SysUpTime, ContextName) ->
?vdebug("prepare to send v3 trap",[]),
{_Oid, IVbs} = mk_v2_trap(TrapRec, Vbs, SysUpTime), % v2 refers to SMIv2;
- TrapRecvs = get_trap_recvs(V3Res), % same SMI for v3
+ TrapRecvs = get_trap_recvs(V3Res), % same SMI for v3
InformRecvs = get_inform_recvs(V3Res),
do_send_v3_trap(TrapRecvs, ContextName, IVbs, NetIf),
- do_send_v3_inform(InformRecvs, ContextName, IVbs, Recv, NetIf).
+ do_send_v3_inform(InformRecvs, ContextName, IVbs, Recv,
+ LocalEngineID, NetIf).
mk_v2_trap(#notification{oid = Oid}, Vbs, SysUpTime) ->
?vtrace("make v2 notification '~p'",[Oid]),
mk_v2_notif(Oid, Vbs, SysUpTime);
-mk_v2_trap(#trap{enterpriseoid = Enter, specificcode = Spec}, Vbs, SysUpTime) ->
+mk_v2_trap(#trap{enterpriseoid = Enter, specificcode = Spec},
+ Vbs, SysUpTime) ->
%% Use alg. in rfc1908 to map a v1 trap to a v2 trap
?vtrace("make v2 trap for '~p' with ~p",[Enter,Spec]),
{Oid,Enterp} =
@@ -845,16 +868,16 @@ do_send_v3_trap(Recvs, ContextName, Vbs, NetIf) ->
end, Recvs),
ok.
-do_send_v3_inform([], _ContextName, _Vbs, _Recv, _NetIf) ->
+do_send_v3_inform([], _ContextName, _Vbs, _Recv, _LocalEngineID, _NetIf) ->
ok;
-do_send_v3_inform(Recvs, ContextName, Vbs, Recv, NetIf) ->
+do_send_v3_inform(Recvs, ContextName, Vbs, Recv, LocalEngineID, NetIf) ->
lists:foreach(
fun({Addr, MsgData, Timeout, Retry}) ->
?vtrace("~n start inform sender to send v3 inform to ~p",
[Addr]),
proc_lib:spawn_link(?MODULE, init_v3_inform,
[{Addr, MsgData}, Timeout, Retry, Vbs,
- Recv, NetIf, ContextName,
+ Recv, LocalEngineID, NetIf, ContextName,
get(verbosity), get(sname)])
end,
Recvs).
@@ -874,7 +897,13 @@ init_v2_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, Community,V,S) ->
%% New process
-init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, ContextName,V,S) ->
+init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, ContextName, V, S) ->
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, LocalEngineID,
+ NetIf, ContextName, V, S).
+
+init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, LocalEngineID,
+ NetIf, ContextName, V, S) ->
%% Make a new Inform for each recipient; they need unique
%% request-ids!
put(verbosity,V),
@@ -882,7 +911,7 @@ init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, ContextName,V,S) ->
?vdebug("~n starting with timeout = ~p and retry = ~p",
[Timeout,Retry]),
InformPdu = make_v2_notif_pdu(Vbs, 'inform-request'), % Yes, v2
- ContextEngineId = snmp_framework_mib:get_engine_id(),
+ ContextEngineId = LocalEngineID,
Msg = {send_pdu_req, 'version-3', InformPdu,
{v3, ContextEngineId, ContextName}, [Addr], self()},
?MODULE:send_inform(Addr, Timeout*10, Retry, Msg, Recv, NetIf).
diff --git a/lib/snmp/src/agent/snmpa_usm.erl b/lib/snmp/src/agent/snmpa_usm.erl
index b94294844b..ae584bb3c1 100644
--- a/lib/snmp/src/agent/snmpa_usm.erl
+++ b/lib/snmp/src/agent/snmpa_usm.erl
@@ -19,8 +19,8 @@
-module(snmpa_usm).
-export([
- process_incoming_msg/4,
- generate_outgoing_msg/5,
+ process_incoming_msg/4, process_incoming_msg/5,
+ generate_outgoing_msg/5, generate_outgoing_msg/6,
generate_discovery_msg/4, generate_discovery_msg/5,
current_statsNotInTimeWindows_vb/0
]).
@@ -33,6 +33,7 @@
-define(VMODULE,"A-USM").
-include("snmp_verbosity.hrl").
+-include("snmpa_internal.hrl").
%%-----------------------------------------------------------------
@@ -58,7 +59,11 @@
%%-----------------------------------------------------------------
process_incoming_msg(Packet, Data, SecParams, SecLevel) ->
- TermDiscoEnabled = is_terminating_discovery_enabled(),
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ process_incoming_msg(Packet, Data, SecParams, SecLevel, LocalEngineID).
+
+process_incoming_msg(Packet, Data, SecParams, SecLevel, LocalEngineID) ->
+ TermDiscoEnabled = is_terminating_discovery_enabled(),
TermTriggerUsername = terminating_trigger_username(),
%% 3.2.1
?vtrace("process_incoming_msg -> check security parms: 3.2.1",[]),
@@ -124,7 +129,7 @@ process_incoming_msg(Packet, Data, SecParams, SecLevel) ->
"~n ~p",[UsmUser]),
DiscoOrPlain = authenticate_incoming(Packet,
UsmSecParams, UsmUser,
- SecLevel),
+ SecLevel, LocalEngineID),
%% 3.2.8
?vtrace("process_incoming_msg -> "
"decrypt scoped data: 3.2.8",[]),
@@ -166,7 +171,8 @@ process_discovery_msg(MsgAuthEngineID, Data, SecLevel) ->
end.
-authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel) ->
+authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel,
+ LocalEngineID) ->
%% 3.2.6
?vtrace("authenticate_incoming -> 3.2.6", []),
AuthProtocol = element(?usmUserAuthProtocol, UsmUser),
@@ -190,7 +196,8 @@ authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel) ->
SecName,
MsgAuthEngineID,
MsgAuthEngineBoots,
- MsgAuthEngineTime) of
+ MsgAuthEngineTime,
+ LocalEngineID) of
discovery ->
discovery;
true ->
@@ -205,15 +212,15 @@ authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel) ->
plain
end.
-authoritative(SecName, MsgAuthEngineBoots, MsgAuthEngineTime) ->
+authoritative(SecName, MsgAuthEngineBoots, MsgAuthEngineTime, LocalEngineID) ->
?vtrace("authoritative -> entry with"
"~n SecName: ~p"
"~n MsgAuthEngineBoots: ~p"
"~n MsgAuthEngineTime: ~p",
[SecName, MsgAuthEngineBoots, MsgAuthEngineTime]),
- SnmpEngineBoots = snmp_framework_mib:get_engine_boots(),
+ SnmpEngineBoots = get_local_engine_boots(LocalEngineID),
?vtrace("authoritative -> SnmpEngineBoots: ~p", [SnmpEngineBoots]),
- SnmpEngineTime = snmp_framework_mib:get_engine_time(),
+ SnmpEngineTime = get_local_engine_time(LocalEngineID),
?vtrace("authoritative -> SnmpEngineTime: ~p", [SnmpEngineTime]),
InTimeWindow =
if
@@ -320,11 +327,12 @@ non_authoritative(SecName,
end.
-is_auth(?usmNoAuthProtocol, _, _, _, SecName, _, _, _) -> % 3.2.5
+is_auth(?usmNoAuthProtocol, _, _, _, SecName, _, _, _, _) -> % 3.2.5
error(usmStatsUnsupportedSecLevels,
?usmStatsUnsupportedSecLevels_instance, SecName); % OTP-5464
is_auth(AuthProtocol, AuthKey, AuthParams, Packet, SecName,
- MsgAuthEngineID, MsgAuthEngineBoots, MsgAuthEngineTime) ->
+ MsgAuthEngineID, MsgAuthEngineBoots, MsgAuthEngineTime,
+ LocalEngineID) ->
TermDiscoEnabled = is_terminating_discovery_enabled(),
TermDiscoStage2 = terminating_discovery_stage2(),
IsAuth = auth_in(AuthProtocol, AuthKey, AuthParams, Packet),
@@ -334,7 +342,7 @@ is_auth(AuthProtocol, AuthKey, AuthParams, Packet, SecName,
%% 3.2.7
?vtrace("is_auth -> "
"retrieve EngineBoots and EngineTime: 3.2.7",[]),
- SnmpEngineID = snmp_framework_mib:get_engine_id(),
+ SnmpEngineID = LocalEngineID,
?vtrace("is_auth -> SnmpEngineID: ~p", [SnmpEngineID]),
case MsgAuthEngineID of
SnmpEngineID when ((MsgAuthEngineBoots =:= 0) andalso
@@ -351,12 +359,14 @@ is_auth(AuthProtocol, AuthKey, AuthParams, Packet, SecName,
%% This will *always* result in the manager *not*
%% beeing in timewindow
authoritative(SecName,
- MsgAuthEngineBoots, MsgAuthEngineTime);
+ MsgAuthEngineBoots, MsgAuthEngineTime,
+ LocalEngineID);
SnmpEngineID -> %% 3.2.7a
?vtrace("is_auth -> we are authoritative: 3.2.7a", []),
authoritative(SecName,
- MsgAuthEngineBoots, MsgAuthEngineTime);
+ MsgAuthEngineBoots, MsgAuthEngineTime,
+ LocalEngineID);
_ -> %% 3.2.7b - we're non-authoritative
?vtrace("is_auth -> we are non-authoritative: 3.2.7b",[]),
@@ -418,12 +428,19 @@ try_decrypt(?usmAesCfb128Protocol,
generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
+ LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel,
+ LocalEngineID).
+
+generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel,
+ LocalEngineID) ->
%% 3.1.1
?vtrace("generate_outgoing_msg -> [3.1.1] entry with"
- "~n SecEngineID: ~p"
- "~n SecName: ~p"
- "~n SecLevel: ~w",
- [SecEngineID, SecName, SecLevel]),
+ "~n SecEngineID: ~p"
+ "~n SecName: ~p"
+ "~n SecLevel: ~w"
+ "~n LocalEngineID: ~p",
+ [SecEngineID, SecName, SecLevel, LocalEngineID]),
{UserName, AuthProtocol, PrivProtocol, AuthKey, PrivKey} =
case SecData of
[] -> % 3.1.1b
@@ -439,7 +456,7 @@ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
element(?usmUserPrivKey, User)};
{_, Name,_,_,_,_,_,_,_,_,_,_,_, RowStatus,_,_} ->
?vdebug("generate_outgoing_msg -> "
- "found user ~p with wrong row status: ~p",
+ "found not active user ~p: ~p",
[Name, RowStatus]),
error(unknownSecurityName);
_ ->
@@ -460,7 +477,7 @@ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
ScopedPduBytes = Message#message.data,
{ScopedPduData, MsgPrivParams} =
encrypt(ScopedPduBytes, PrivProtocol, PrivKey, SecLevel),
- SnmpEngineID = snmp_framework_mib:get_engine_id(),
+ SnmpEngineID = LocalEngineID,
?vtrace("generate_outgoing_msg -> SnmpEngineID: ~p [3.1.6]",
[SnmpEngineID]),
%% 3.1.6
@@ -474,8 +491,8 @@ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
{get_engine_boots(SecEngineID),
get_engine_time(SecEngineID)};
_ ->
- {snmp_framework_mib:get_engine_boots(),
- snmp_framework_mib:get_engine_time()}
+ {get_local_engine_boots(SnmpEngineID),
+ get_local_engine_time(SnmpEngineID)}
end,
%% 3.1.5 - 3.1.7
?vtrace("generate_outgoing_msg -> [3.1.5 - 3.1.7]",[]),
@@ -681,6 +698,19 @@ current_statsNotInTimeWindows_vb() ->
value = get_counter(usmStatsNotInTimeWindows)}.
+
+%%-----------------------------------------------------------------
+%% Future profing...
+%%-----------------------------------------------------------------
+
+get_local_engine_boots(_LocalEngineID) ->
+ snmp_framework_mib:get_engine_boots().
+
+get_local_engine_time(_LocalEngineID) ->
+ snmp_framework_mib:get_engine_time().
+
+
+
%%-----------------------------------------------------------------
%% We cache the local values of all non-auth engines we know.
%% Keep the values in the snmp_agent_table.
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 17:00:04 +0000