%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2004-2012. 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).
%%----------------------------------------------------------------------
%% This module contains the user interface to the snmp agent toolkit.
%%----------------------------------------------------------------------
-export([verbosity/2,
current_request_id/0, current_community/0, current_address/0,
current_context/0, current_net_if_data/0,
get_symbolic_store_db/0,
which_aliasnames/0,
which_tables/0,
which_variables/0,
which_notifications/0,
name_to_oid/1, name_to_oid/2,
oid_to_name/1, oid_to_name/2,
int_to_enum/2, int_to_enum/3,
enum_to_int/2, enum_to_int/3,
info/0, info/1, old_info_format/1,
load_mibs/1, load_mibs/2,
unload_mibs/1, unload_mibs/2,
which_mibs/0, which_mibs/1,
whereis_mib/1, whereis_mib/2,
dump_mibs/0, dump_mibs/1,
mib_of/1, mib_of/2,
me_of/1, me_of/2,
invalidate_mibs_cache/0, invalidate_mibs_cache/1,
which_mibs_cache_size/0, which_mibs_cache_size/1,
enable_mibs_cache/0, enable_mibs_cache/1,
disable_mibs_cache/0, disable_mibs_cache/1,
gc_mibs_cache/0, gc_mibs_cache/1, gc_mibs_cache/2, gc_mibs_cache/3,
enable_mibs_cache_autogc/0, enable_mibs_cache_autogc/1,
disable_mibs_cache_autogc/0, disable_mibs_cache_autogc/1,
update_mibs_cache_age/1, update_mibs_cache_age/2,
update_mibs_cache_gclimit/1, update_mibs_cache_gclimit/2,
get/2, get/3, get_next/2, get_next/3,
register_subagent/3, unregister_subagent/2,
send_notification/3, send_notification/4, send_notification/5,
send_notification/6, send_notification/7,
send_trap/3, send_trap/4,
discovery/2, discovery/3, discovery/4, discovery/5, discovery/6,
sys_up_time/0, system_start_time/0,
backup/1, backup/2,
convert_config/1,
restart_worker/0, restart_worker/1,
restart_set_worker/0, restart_set_worker/1]).
%% USM functions:
-export([passwd2localized_key/3, localize_key/3]).
%% Agent Capabilities functions
-export([add_agent_caps/2, del_agent_caps/1, get_agent_caps/0]).
%% Audit Trail Log functions
-export([log_to_txt/2, log_to_txt/3, log_to_txt/4,
log_to_txt/5, log_to_txt/6, log_to_txt/7,
log_info/0,
change_log_size/1,
get_log_type/0, get_log_type/1,
change_log_type/1, change_log_type/2,
set_log_type/1, set_log_type/2
]).
%% Message filter / load regulation functions
-export([
register_notification_filter/3,
register_notification_filter/4,
register_notification_filter/5,
unregister_notification_filter/1,
unregister_notification_filter/2,
which_notification_filter/0,
which_notification_filter/1,
get_request_limit/0, get_request_limit/1,
set_request_limit/1, set_request_limit/2
]).
-include("snmpa_atl.hrl").
-define(EXTRA_INFO, undefined).
%%-----------------------------------------------------------------
%% This utility function is used to convert an old SNMP application
%% config (prior to snmp-4.0) to a SNMP agent config (as of
%% snmp-4.0).
%% This is the config structure of the SNMP application as of
%% snmp-4.0:
%% {snmp, snmp_config()}
%% snmp_config() -> [snmp_config_item()]
%% snmp_config_item() -> {agent, agent_config()} |
%% {manager, manager_config()}
%%-----------------------------------------------------------------
convert_config(Opts) ->
snmpa_app:convert_config(Opts).
%%-----------------------------------------------------------------
%% Note that verbosity for the agents is actually only implemented
%% (properly) for the master agent.
%%-----------------------------------------------------------------
verbosity(all,Verbosity) ->
catch snmpa_agent:verbosity(sub_agents,Verbosity),
catch snmpa_agent:verbosity(master_agent,Verbosity),
catch snmpa_agent:verbosity(net_if,Verbosity),
catch snmpa_agent:verbosity(mib_server,Verbosity),
catch snmpa_agent:verbosity(note_store,Verbosity),
catch snmpa_symbolic_store:verbosity(Verbosity),
catch snmpa_local_db:verbosity(Verbosity);
verbosity(master_agent,Verbosity) ->
catch snmpa_agent:verbosity(master_agent,Verbosity);
verbosity(net_if,Verbosity) ->
catch snmpa_agent:verbosity(net_if,Verbosity);
verbosity(note_store,Verbosity) ->
catch snmpa_agent:verbosity(note_store, Verbosity);
verbosity(mib_server,Verbosity) ->
catch snmpa_agent:verbosity(mib_server,Verbosity);
verbosity(symbolic_store,Verbosity) ->
catch snmpa_symbolic_store:verbosity(Verbosity);
verbosity(local_db,Verbosity) ->
catch snmpa_local_db:verbosity(Verbosity);
verbosity(Agent,{subagents,Verbosity}) ->
catch snmpa_agent:verbosity(Agent,{sub_agents,Verbosity});
verbosity(Agent,Verbosity) ->
catch snmpa_agent:verbosity(Agent,Verbosity).
%%-----------------------------------------------------------------
%%
%% Some symbolic store (internal database) utility functions
%%
%%-----------------------------------------------------------------
get_symbolic_store_db() ->
snmpa_symbolic_store:get_db().
which_aliasnames() ->
snmpa_symbolic_store:which_aliasnames().
which_tables() ->
snmpa_symbolic_store:which_tables().
which_variables() ->
snmpa_symbolic_store:which_variables().
which_notifications() ->
snmpa_symbolic_store:which_notifications().
%%-----------------------------------------------------------------
%% These 8 functions returns {value, Val} | false
%%-----------------------------------------------------------------
name_to_oid(Name) ->
snmpa_symbolic_store:aliasname_to_oid(Name).
name_to_oid(Db, Name) ->
snmpa_symbolic_store:aliasname_to_oid(Db, Name).
oid_to_name(OID) ->
snmpa_symbolic_store:oid_to_aliasname(OID).
oid_to_name(Db, OID) ->
snmpa_symbolic_store:oid_to_aliasname(Db, OID).
enum_to_int(Name, Enum) ->
snmpa_symbolic_store:enum_to_int(Name, Enum).
enum_to_int(Db, Name, Enum) ->
snmpa_symbolic_store:enum_to_int(Db, Name, Enum).
int_to_enum(Name, Int) ->
snmpa_symbolic_store:int_to_enum(Name, Int).
int_to_enum(Db, Name, Int) ->
snmpa_symbolic_store:int_to_enum(Db, Name, Int).
%%-----------------------------------------------------------------
%% These functions must only be called in the process context
%% where the instrumentation functions are called!
%%-----------------------------------------------------------------
current_request_id() -> current_get(snmp_request_id).
current_context() -> current_get(snmp_context).
current_community() -> current_get(snmp_community).
current_address() -> current_get(snmp_address).
current_net_if_data() -> current_get(net_if_data).
current_get(Tag) ->
case get(Tag) of
undefined -> false;
X -> {value, X}
end.
%% -
get(Agent, Vars) -> snmpa_agent:get(Agent, Vars).
get(Agent, Vars, Context) -> snmpa_agent:get(Agent, Vars, Context).
get_next(Agent, Vars) -> snmpa_agent:get_next(Agent, Vars).
get_next(Agent, Vars, Context) -> snmpa_agent:get_next(Agent, Vars, Context).
info() -> info(snmp_master_agent).
info(Agent) -> snmpa_agent:info(Agent).
old_info_format(Info) when is_list(Info) ->
{value, Vsns} = lists:keysearch(vsns, 1, Info),
{value, {_, MibInfo}} = lists:keysearch(mib_server, 1, Info),
{value, SAa} = lists:keysearch(subagents, 1, MibInfo),
{value, LoadedMibs} = lists:keysearch(loaded_mibs, 1, MibInfo),
{value, TreeSz} = lists:keysearch(tree_size_bytes, 1, MibInfo),
{value, ProcMem} = lists:keysearch(process_memory, 1, MibInfo),
{value, DbMem} = lists:keysearch(db_memory, 1, MibInfo),
[Vsns, SAa, LoadedMibs, TreeSz, ProcMem, DbMem].
%% -
backup(BackupDir) ->
backup(snmp_master_agent, BackupDir).
backup(Agent, BackupDir) ->
snmpa_agent:backup(Agent, BackupDir).
%% -
dump_mibs() -> snmpa_agent:dump_mibs(snmp_master_agent).
dump_mibs(File) -> snmpa_agent:dump_mibs(snmp_master_agent, File).
load_mibs(Mibs) ->
load_mibs(snmp_master_agent, Mibs).
load_mibs(Agent, Mibs) when is_list(Mibs) ->
snmpa_agent:load_mibs(Agent, Mibs).
unload_mibs(Mibs) ->
unload_mibs(snmp_master_agent, Mibs).
unload_mibs(Agent, Mibs) when is_list(Mibs) ->
snmpa_agent:unload_mibs(Agent, Mibs).
which_mibs() -> which_mibs(snmp_master_agent).
which_mibs(Agent) -> snmpa_agent:which_mibs(Agent).
whereis_mib(Mib) ->
whereis_mib(snmp_master_agent, Mib).
whereis_mib(Agent, Mib) when is_atom(Mib) ->
snmpa_agent:whereis_mib(Agent, Mib).
%% -
mib_of(Oid) ->
snmpa_agent:mib_of(Oid).
mib_of(Agent, Oid) ->
snmpa_agent:mib_of(Agent, Oid).
me_of(Oid) ->
snmpa_agent:me_of(Oid).
me_of(Agent, Oid) ->
snmpa_agent:me_of(Agent, Oid).
invalidate_mibs_cache() ->
invalidate_mibs_cache(snmp_master_agent).
invalidate_mibs_cache(Agent) ->
snmpa_agent:invalidate_mibs_cache(Agent).
which_mibs_cache_size() ->
which_mibs_cache_size(snmp_master_agent).
which_mibs_cache_size(Agent) ->
snmpa_agent:which_mibs_cache_size(Agent).
enable_mibs_cache() ->
enable_mibs_cache(snmp_master_agent).
enable_mibs_cache(Agent) ->
snmpa_agent:enable_mibs_cache(Agent).
disable_mibs_cache() ->
disable_mibs_cache(snmp_master_agent).
disable_mibs_cache(Agent) ->
snmpa_agent:disable_mibs_cache(Agent).
gc_mibs_cache() ->
gc_mibs_cache(snmp_master_agent).
gc_mibs_cache(Agent) when is_atom(Agent) orelse is_pid(Agent) ->
snmpa_agent:gc_mibs_cache(Agent);
gc_mibs_cache(Age) ->
gc_mibs_cache(snmp_master_agent, Age).
gc_mibs_cache(Agent, Age) when is_atom(Agent) orelse is_pid(Agent) ->
snmpa_agent:gc_mibs_cache(Agent, Age);
gc_mibs_cache(Age, GcLimit) ->
gc_mibs_cache(snmp_master_agent, Age, GcLimit).
gc_mibs_cache(Agent, Age, GcLimit) when is_atom(Agent) orelse is_pid(Agent) ->
snmpa_agent:gc_mibs_cache(Agent, Age, GcLimit).
enable_mibs_cache_autogc() ->
enable_mibs_cache_autogc(snmp_master_agent).
enable_mibs_cache_autogc(Agent) ->
snmpa_agent:enable_mibs_cache_autogc(Agent).
disable_mibs_cache_autogc() ->
disable_mibs_cache_autogc(snmp_master_agent).
disable_mibs_cache_autogc(Agent) ->
snmpa_agent:disable_mibs_cache_autogc(Agent).
update_mibs_cache_age(Age) ->
update_mibs_cache_age(snmp_master_agent, Age).
update_mibs_cache_age(Agent, Age) ->
snmpa_agent:update_mibs_cache_age(Agent, Age).
update_mibs_cache_gclimit(GcLimit) ->
update_mibs_cache_gclimit(snmp_master_agent, GcLimit).
update_mibs_cache_gclimit(Agent, GcLimit) ->
snmpa_agent:update_mibs_cache_gclimit(Agent, GcLimit).
%% - message filter / load regulation
register_notification_filter(Id, Mod, Data) when is_atom(Mod) ->
register_notification_filter(snmp_master_agent, Id, Mod, Data, last).
register_notification_filter(Agent, Id, Mod, Data)
when is_atom(Agent) andalso is_atom(Mod) ->
register_notification_filter(Agent, Id, Mod, Data, last);
register_notification_filter(Agent, Id, Mod, Data)
when is_pid(Agent) andalso is_atom(Mod) ->
register_notification_filter(Agent, Id, Mod, Data, last);
register_notification_filter(Id, Mod, Data, Where) when is_atom(Mod) ->
register_notification_filter(snmp_master_agent, Id, Mod, Data, Where).
register_notification_filter(Agent, Id, Mod, Data, Where) ->
snmpa_agent:register_notification_filter(Agent, Id, Mod, Data, Where).
unregister_notification_filter(Id) ->
unregister_notification_filter(snmp_master_agent, Id).
unregister_notification_filter(Agent, Id) ->
snmpa_agent:unregister_notification_filter(Agent, Id).
which_notification_filter() ->
which_notification_filter(snmp_master_agent).
which_notification_filter(Agent) ->
snmpa_agent:which_notification_filter(Agent).
get_request_limit() ->
get_request_limit(snmp_master_agent).
get_request_limit(Agent) ->
snmpa_agent:get_request_limit(Agent).
set_request_limit(NewLimit) ->
set_request_limit(snmp_master_agent, NewLimit).
set_request_limit(Agent, NewLimit) ->
snmpa_agent:set_request_limit(Agent, NewLimit).
%% -
send_notification(Agent, Notification, Recv) ->
send_notification(Agent, Notification, Recv, "", "", []).
send_notification(Agent, Notification, Recv, Varbinds) ->
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)
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, "", []).
send_trap(Agent, Trap, Community, Varbinds) ->
send_notification(Agent, Trap, no_receiver, Community, "", Varbinds).
%%%-----------------------------------------------------------------
discovery(TargetName, Notification) ->
Varbinds = [],
discovery(TargetName, Notification, Varbinds).
discovery(TargetName, Notification, Varbinds) when is_list(Varbinds) ->
ContextName = "",
discovery(TargetName, Notification, ContextName, Varbinds);
discovery(TargetName, Notification, DiscoHandler)
when is_atom(DiscoHandler) ->
Varbinds = [],
discovery(TargetName, Notification, Varbinds, DiscoHandler).
discovery(TargetName, Notification, ContextName, Varbinds)
when is_list(Varbinds) ->
DiscoHandler = snmpa_discovery_handler_default,
discovery(TargetName, Notification, ContextName, Varbinds,
DiscoHandler);
discovery(TargetName, Notification, Varbinds, DiscoHandler)
when is_atom(DiscoHandler) ->
ContextName = "",
discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler).
discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler) ->
ExtraInfo = ?EXTRA_INFO,
discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler,
ExtraInfo).
discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler,
ExtraInfo)
when (is_list(TargetName) andalso (length(TargetName) > 0) andalso
is_atom(Notification) andalso
is_list(ContextName) andalso
is_list(Varbinds) andalso
is_atom(DiscoHandler)) ->
case (catch snmpa_discovery_handler:verify(DiscoHandler)) of
ok ->
snmpa_agent:discovery(TargetName, Notification, ContextName,
Varbinds, DiscoHandler, ExtraInfo);
Error ->
Error
end.
%%%-----------------------------------------------------------------
register_subagent(Agent, SubTree, SubAgent) ->
snmpa_agent:register_subagent(Agent, SubTree, SubAgent).
unregister_subagent(Agent, SubOidOrPid) ->
snmpa_agent:unregister_subagent(Agent, SubOidOrPid).
system_start_time() ->
[{_, Time}] = ets:lookup(snmp_agent_table, system_start_time),
Time.
sys_up_time() ->
% time in 0.01 seconds.
StartTime = system_start_time(),
(snmp_misc:now(cs) - StartTime) rem (2 bsl 31).
%%%-----------------------------------------------------------------
restart_worker() ->
restart_worker(snmp_master_agent).
restart_worker(Agent) ->
snmpa_agent:restart_worker(Agent).
restart_set_worker() ->
restart_set_worker(snmp_master_agent).
restart_set_worker(Agent) ->
snmpa_agent:restart_set_worker(Agent).
%%%-----------------------------------------------------------------
%%% USM functions
%%%-----------------------------------------------------------------
passwd2localized_key(Alg, Passwd, EngineID) ->
snmp_usm:passwd2localized_key(Alg, Passwd, EngineID).
localize_key(Alg, Key, EngineID) ->
snmp_usm:localize_key(Alg, Key, EngineID).
%%%-----------------------------------------------------------------
%%% Agent Capabilities functions
%%%-----------------------------------------------------------------
add_agent_caps(Oid, Descr) ->
snmp_standard_mib:add_agent_caps(Oid, Descr).
del_agent_caps(Index) ->
snmp_standard_mib:del_agent_caps(Index).
get_agent_caps() ->
snmp_standard_mib:get_agent_caps().
%%%-----------------------------------------------------------------
%%% Audit Trail Log functions
%%%-----------------------------------------------------------------
log_to_txt(LogDir, Mibs) ->
OutFile = "snmpa_log.txt",
LogName = ?audit_trail_log_name,
LogFile = ?audit_trail_log_file,
snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
log_to_txt(LogDir, Mibs, OutFile) ->
LogName = ?audit_trail_log_name,
LogFile = ?audit_trail_log_file,
snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
log_to_txt(LogDir, Mibs, OutFile, LogName) ->
LogFile = ?audit_trail_log_file,
snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) ->
snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start) ->
snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start).
log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop) ->
snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop).
log_info() ->
LogName = ?audit_trail_log_name,
snmp_log:info(LogName).
change_log_size(NewSize) ->
LogName = ?audit_trail_log_name, % The old (agent) default
snmp:change_log_size(LogName, NewSize).
get_log_type() ->
get_log_type(snmp_master_agent).
get_log_type(Agent) ->
snmpa_agent:get_log_type(Agent).
%% NewType -> atl_type()
change_log_type(NewType) ->
set_log_type(NewType).
change_log_type(Agent, NewType) ->
set_log_type(Agent, NewType).
set_log_type(NewType) ->
set_log_type(snmp_master_agent, NewType).
set_log_type(Agent, NewType) ->
snmpa_agent:set_log_type(Agent, NewType).
