719 lines
22 KiB
Ruby
719 lines
22 KiB
Ruby
#
|
|
# Copyright (c) 2004 David R. Halliday
|
|
# All rights reserved.
|
|
#
|
|
# This SNMP library is free software. Redistribution is permitted under the
|
|
# same terms and conditions as the standard Ruby distribution. See the
|
|
# COPYING file in the Ruby distribution for details.
|
|
#
|
|
|
|
require 'snmp/pdu'
|
|
require 'snmp/mib'
|
|
require 'socket'
|
|
require 'timeout'
|
|
require 'thread'
|
|
|
|
module SNMP
|
|
|
|
class RequestTimeout < RuntimeError; end
|
|
|
|
##
|
|
# Wrap socket so that it can be easily substituted for testing or for
|
|
# using other transport types (e.g. TCP)
|
|
#
|
|
class UDPTransport
|
|
def initialize(socket = nil)
|
|
@socket = socket
|
|
|
|
if socket.nil?
|
|
@socket = UDPSocket.open
|
|
end
|
|
end
|
|
|
|
def close
|
|
@socket.close
|
|
end
|
|
|
|
def send(data, host, port)
|
|
@socket.send(data, 0, host, port)
|
|
end
|
|
|
|
def recv(max_bytes)
|
|
@socket.recv(max_bytes)
|
|
end
|
|
end
|
|
|
|
|
|
class RexUDPTransport
|
|
def initialize(socket = nil)
|
|
@socket = socket
|
|
|
|
if socket.nil?
|
|
@socket = UDPSocket.open
|
|
end
|
|
end
|
|
|
|
def close
|
|
@socket.close
|
|
end
|
|
|
|
def send(data, host, port, flags = 0)
|
|
begin
|
|
@socket.sendto(data, host, port, flags)
|
|
rescue NoMethodError
|
|
@socket.send(data, 0, host, port)
|
|
end
|
|
|
|
end
|
|
|
|
def recv(max_bytes)
|
|
@socket.recv(max_bytes)
|
|
end
|
|
end
|
|
|
|
|
|
##
|
|
# Manage a request-id in the range 1..2**31-1
|
|
#
|
|
class RequestId
|
|
MAX_REQUEST_ID = 2**31
|
|
|
|
def initialize
|
|
@lock = Mutex.new
|
|
@request_id = rand(MAX_REQUEST_ID)
|
|
end
|
|
|
|
def next
|
|
@lock.synchronize do
|
|
@request_id += 1
|
|
@request_id = 1 if @request_id == MAX_REQUEST_ID
|
|
return @request_id
|
|
end
|
|
end
|
|
|
|
def force_next(next_id)
|
|
new_request_id = next_id.to_i
|
|
if new_request_id < 1 || new_request_id >= MAX_REQUEST_ID
|
|
raise "Invalid request id: #{new_request_id}"
|
|
end
|
|
new_request_id = MAX_REQUEST_ID if new_request_id == 1
|
|
@lock.synchronize do
|
|
@request_id = new_request_id - 1
|
|
end
|
|
end
|
|
end
|
|
|
|
##
|
|
# == SNMP Manager
|
|
#
|
|
# This class provides a manager for interacting with a single SNMP agent.
|
|
#
|
|
# = Example
|
|
#
|
|
# require 'snmp'
|
|
#
|
|
# manager = SNMP::Manager.new(:Host => 'localhost', :Port => 1061)
|
|
# response = manager.get(["1.3.6.1.2.1.1.1.0", "1.3.6.1.2.1.1.2.0"])
|
|
# response.each_varbind {|vb| puts vb.inspect}
|
|
# manager.close
|
|
#
|
|
# == Symbolic Object Names
|
|
#
|
|
# Symbolic names for SNMP object IDs can be used as parameters to the
|
|
# APIs in this class if the MIB modules are imported and the names of the
|
|
# MIBs are included in the MibModules configuration parameter.
|
|
#
|
|
# See MIB.varbind_list for a description of valid parameter formats.
|
|
#
|
|
# The following modules are loaded by default: "SNMPv2-SMI", "SNMPv2-MIB",
|
|
# "IF-MIB", "IP-MIB", "TCP-MIB", "UDP-MIB". All of the current IETF MIBs
|
|
# have been imported and are available for loading.
|
|
#
|
|
# Additional modules may be imported using the MIB class. The
|
|
# current implementation of the importing code requires that the
|
|
# external 'smidump' tool is available in your PATH. This tool can be
|
|
# obtained from the libsmi website at
|
|
# http://www.ibr.cs.tu-bs.de/projects/libsmi/ .
|
|
#
|
|
# = Example
|
|
#
|
|
# Do this once:
|
|
#
|
|
# SNMP::MIB.import_module(MY_MODULE_FILENAME, MIB_OUTPUT_DIR)
|
|
#
|
|
# Include your module in MibModules each time you create a Manager:
|
|
#
|
|
# SNMP::Manager.new(:Host => 'localhost', :MibDir => MIB_OUTPUT_DIR,
|
|
# :MibModules => ["MY-MODULE-MIB", "SNMPv2-MIB", ...])
|
|
#
|
|
|
|
class Manager
|
|
|
|
##
|
|
# Default configuration. Individual options may be overridden when
|
|
# the Manager is created.
|
|
#
|
|
DefaultConfig = {
|
|
:Host => 'localhost',
|
|
:Port => 161,
|
|
:TrapPort => 162,
|
|
:Socket => nil,
|
|
:Community => 'public',
|
|
:WriteCommunity => nil,
|
|
:Version => :SNMPv2c,
|
|
:Timeout => 1,
|
|
:Retries => 5,
|
|
:Transport => UDPTransport,
|
|
:MaxReceiveBytes => 8000,
|
|
:MibDir => MIB::DEFAULT_MIB_PATH,
|
|
:MibModules => ["SNMPv2-SMI", "SNMPv2-MIB", "IF-MIB", "IP-MIB", "TCP-MIB", "UDP-MIB"]}
|
|
|
|
@@request_id = RequestId.new
|
|
|
|
##
|
|
# Retrieves the current configuration of this Manager.
|
|
#
|
|
attr_reader :config
|
|
|
|
##
|
|
# Retrieves the MIB for this Manager.
|
|
#
|
|
attr_reader :mib
|
|
|
|
def initialize(config = {})
|
|
if block_given?
|
|
warn "SNMP::Manager::new() does not take block; use SNMP::Manager::open() instead"
|
|
end
|
|
@config = DefaultConfig.merge(config)
|
|
@config[:WriteCommunity] = @config[:WriteCommunity] || @config[:Community]
|
|
@host = @config[:Host]
|
|
@port = @config[:Port]
|
|
@socket = @config[:Socket]
|
|
@trap_port = @config[:TrapPort]
|
|
@community = @config[:Community]
|
|
@write_community = @config[:WriteCommunity]
|
|
@snmp_version = @config[:Version]
|
|
@timeout = @config[:Timeout]
|
|
@retries = @config[:Retries]
|
|
@transport = @config[:Transport].new(@socket)
|
|
@max_bytes = @config[:MaxReceiveBytes]
|
|
@mib = MIB.new
|
|
load_modules(@config[:MibModules], @config[:MibDir])
|
|
end
|
|
|
|
##
|
|
# Creates a Manager but also takes an optional block and automatically
|
|
# closes the transport connection used by this manager after the block
|
|
# completes.
|
|
#
|
|
def self.open(config = {})
|
|
manager = Manager.new(config)
|
|
if block_given?
|
|
begin
|
|
yield manager
|
|
ensure
|
|
manager.close
|
|
end
|
|
end
|
|
end
|
|
|
|
##
|
|
# Close the transport connection for this manager.
|
|
#
|
|
def close
|
|
@transport.close
|
|
end
|
|
|
|
def load_module(name)
|
|
@mib.load_module(name)
|
|
end
|
|
|
|
##
|
|
# Sends a get request for the supplied list of ObjectId or VarBind
|
|
# objects.
|
|
#
|
|
# Returns a Response PDU with the results of the request.
|
|
#
|
|
def get(object_list)
|
|
varbind_list = @mib.varbind_list(object_list, :NullValue)
|
|
request = GetRequest.new(@@request_id.next, varbind_list)
|
|
try_request(request)
|
|
end
|
|
|
|
##
|
|
# Sends a get request for the supplied list of ObjectId or VarBind
|
|
# objects.
|
|
#
|
|
# Returns a list of the varbind values only, not the entire response,
|
|
# in the same order as the initial object_list. This method is
|
|
# useful for retrieving scalar values.
|
|
#
|
|
# For example:
|
|
#
|
|
# SNMP::Manager.open(:Host => "localhost") do |manager|
|
|
# puts manager.get_value("sysDescr.0")
|
|
# end
|
|
#
|
|
def get_value(object_list)
|
|
if object_list.respond_to? :to_ary
|
|
get(object_list).vb_list.collect { |vb| vb.value }
|
|
else
|
|
get(object_list).vb_list.first.value
|
|
end
|
|
end
|
|
|
|
##
|
|
# Sends a get-next request for the supplied list of ObjectId or VarBind
|
|
# objects.
|
|
#
|
|
# Returns a Response PDU with the results of the request.
|
|
#
|
|
def get_next(object_list)
|
|
varbind_list = @mib.varbind_list(object_list, :NullValue)
|
|
request = GetNextRequest.new(@@request_id.next, varbind_list)
|
|
try_request(request)
|
|
end
|
|
|
|
##
|
|
# Sends a get-bulk request. The non_repeaters parameter specifies
|
|
# the number of objects in the object_list to be retrieved once. The
|
|
# remaining objects in the list will be retrieved up to the number of
|
|
# times specified by max_repetitions.
|
|
#
|
|
def get_bulk(non_repeaters, max_repetitions, object_list)
|
|
varbind_list = @mib.varbind_list(object_list, :NullValue)
|
|
request = GetBulkRequest.new(
|
|
@@request_id.next,
|
|
varbind_list,
|
|
non_repeaters,
|
|
max_repetitions)
|
|
try_request(request)
|
|
end
|
|
|
|
##
|
|
# Sends a set request using the supplied list of VarBind objects.
|
|
#
|
|
# Returns a Response PDU with the results of the request.
|
|
#
|
|
def set(object_list)
|
|
varbind_list = @mib.varbind_list(object_list, :KeepValue)
|
|
request = SetRequest.new(@@request_id.next, varbind_list)
|
|
try_request(request, @write_community)
|
|
end
|
|
|
|
##
|
|
# Sends an SNMPv1 style trap.
|
|
#
|
|
# enterprise: The enterprise OID from the IANA assigned numbers
|
|
# (http://www.iana.org/assignments/enterprise-numbers) as a String or
|
|
# an ObjectId.
|
|
#
|
|
# agent_addr: The IP address of the SNMP agent as a String or IpAddress.
|
|
#
|
|
# generic_trap: The generic trap identifier. One of :coldStart,
|
|
# :warmStart, :linkDown, :linkUp, :authenticationFailure,
|
|
# :egpNeighborLoss, or :enterpriseSpecific
|
|
#
|
|
# specific_trap: An integer representing the specific trap type for
|
|
# an enterprise-specific trap.
|
|
#
|
|
# timestamp: An integer respresenting the number of hundredths of
|
|
# a second that this system has been up.
|
|
#
|
|
# object_list: A list of additional varbinds to send with the trap.
|
|
#
|
|
# For example:
|
|
#
|
|
# Manager.open(:Version => :SNMPv1) do |snmp|
|
|
# snmp.trap_v1(
|
|
# "enterprises.9",
|
|
# "10.1.2.3",
|
|
# :enterpriseSpecific,
|
|
# 42,
|
|
# 12345,
|
|
# [VarBind.new("1.3.6.1.2.3.4", Integer.new(1))])
|
|
# end
|
|
#
|
|
def trap_v1(enterprise, agent_addr, generic_trap, specific_trap, timestamp, object_list=[])
|
|
vb_list = @mib.varbind_list(object_list, :KeepValue)
|
|
ent_oid = @mib.oid(enterprise)
|
|
agent_ip = IpAddress.new(agent_addr)
|
|
specific_int = Integer(specific_trap)
|
|
ticks = TimeTicks.new(timestamp)
|
|
trap = SNMPv1_Trap.new(ent_oid, agent_ip, generic_trap, specific_int, ticks, vb_list)
|
|
send_request(trap, @community, @host, @trap_port)
|
|
end
|
|
|
|
##
|
|
# Sends an SNMPv2c style trap.
|
|
#
|
|
# sys_up_time: An integer respresenting the number of hundredths of
|
|
# a second that this system has been up.
|
|
#
|
|
# trap_oid: An ObjectId or String with the OID identifier for this
|
|
# trap.
|
|
#
|
|
# object_list: A list of additional varbinds to send with the trap.
|
|
#
|
|
def trap_v2(sys_up_time, trap_oid, object_list=[])
|
|
vb_list = create_trap_vb_list(sys_up_time, trap_oid, object_list)
|
|
trap = SNMPv2_Trap.new(@@request_id.next, vb_list)
|
|
send_request(trap, @community, @host, @trap_port)
|
|
end
|
|
|
|
##
|
|
# Sends an inform request using the supplied varbind list.
|
|
#
|
|
# sys_up_time: An integer respresenting the number of hundredths of
|
|
# a second that this system has been up.
|
|
#
|
|
# trap_oid: An ObjectId or String with the OID identifier for this
|
|
# inform request.
|
|
#
|
|
# object_list: A list of additional varbinds to send with the inform.
|
|
#
|
|
def inform(sys_up_time, trap_oid, object_list=[])
|
|
vb_list = create_trap_vb_list(sys_up_time, trap_oid, object_list)
|
|
request = InformRequest.new(@@request_id.next, vb_list)
|
|
try_request(request, @community, @host, @trap_port)
|
|
end
|
|
|
|
##
|
|
# Helper method for building VarBindList for trap and inform requests.
|
|
#
|
|
def create_trap_vb_list(sys_up_time, trap_oid, object_list)
|
|
vb_args = @mib.varbind_list(object_list, :KeepValue)
|
|
uptime_vb = VarBind.new(SNMP::SYS_UP_TIME_OID, TimeTicks.new(sys_up_time.to_int))
|
|
trap_vb = VarBind.new(SNMP::SNMP_TRAP_OID_OID, @mib.oid(trap_oid))
|
|
VarBindList.new([uptime_vb, trap_vb, *vb_args])
|
|
end
|
|
|
|
##
|
|
# Walks a list of ObjectId or VarBind objects using get_next until
|
|
# the response to the first OID in the list reaches the end of its
|
|
# MIB subtree.
|
|
#
|
|
# The varbinds from each get_next are yielded to the given block as
|
|
# they are retrieved. The result is yielded as a VarBind when walking
|
|
# a single object or as a VarBindList when walking a list of objects.
|
|
#
|
|
# Normally this method is used for walking tables by providing an
|
|
# ObjectId for each column of the table.
|
|
#
|
|
# For example:
|
|
#
|
|
# SNMP::Manager.open(:Host => "localhost") do |manager|
|
|
# manager.walk("ifTable") { |vb| puts vb }
|
|
# end
|
|
#
|
|
# SNMP::Manager.open(:Host => "localhost") do |manager|
|
|
# manager.walk(["ifIndex", "ifDescr"]) do |index, descr|
|
|
# puts "#{index.value} #{descr.value}"
|
|
# end
|
|
# end
|
|
#
|
|
# The index_column identifies the column that will provide the index
|
|
# for each row. This information is used to deal with "holes" in a
|
|
# table (when a row is missing a varbind for one column). A missing
|
|
# varbind is replaced with a varbind with the value NoSuchInstance.
|
|
#
|
|
# Note: If you are getting back rows where all columns have a value of
|
|
# NoSuchInstance then your index column is probably missing one of the
|
|
# rows. Choose an index column that includes all indexes for the table.
|
|
#
|
|
def walk(object_list, index_column=0)
|
|
raise ArgumentError, "expected a block to be given" unless block_given?
|
|
vb_list = @mib.varbind_list(object_list, :NullValue)
|
|
raise ArgumentError, "index_column is past end of varbind list" if index_column >= vb_list.length
|
|
is_single_vb = object_list.respond_to?(:to_str) ||
|
|
object_list.respond_to?(:to_varbind)
|
|
start_list = vb_list
|
|
start_oid = vb_list[index_column].name
|
|
last_oid = start_oid
|
|
loop do
|
|
vb_list = get_next(vb_list).vb_list
|
|
index_vb = vb_list[index_column]
|
|
break if EndOfMibView == index_vb.value
|
|
stop_oid = index_vb.name
|
|
if stop_oid <= last_oid
|
|
# warn "OIDs are not increasing, #{last_oid} followed by #{stop_oid}"
|
|
break
|
|
end
|
|
break unless stop_oid.subtree_of?(start_oid)
|
|
last_oid = stop_oid
|
|
if is_single_vb
|
|
yield index_vb
|
|
else
|
|
vb_list = validate_row(vb_list, start_list, index_column)
|
|
yield vb_list
|
|
end
|
|
end
|
|
end
|
|
|
|
##
|
|
# Helper method for walk. Checks all of the VarBinds in vb_list to
|
|
# make sure that the row indices match. If the row index does not
|
|
# match the index column, then that varbind is replaced with a varbind
|
|
# with a value of NoSuchInstance.
|
|
#
|
|
def validate_row(vb_list, start_list, index_column)
|
|
start_vb = start_list[index_column]
|
|
index_vb = vb_list[index_column]
|
|
row_index = index_vb.name.index(start_vb.name)
|
|
vb_list.each_index do |i|
|
|
if i != index_column
|
|
expected_oid = start_list[i].name + row_index
|
|
if vb_list[i].name != expected_oid
|
|
vb_list[i] = VarBind.new(expected_oid, NoSuchInstance)
|
|
end
|
|
end
|
|
end
|
|
vb_list
|
|
end
|
|
private :validate_row
|
|
|
|
##
|
|
# Set the next request-id instead of letting it be generated
|
|
# automatically. This method is useful for testing and debugging.
|
|
#
|
|
def next_request_id=(request_id)
|
|
@@request_id.force_next(request_id)
|
|
end
|
|
|
|
private
|
|
|
|
def warn(message)
|
|
trace = caller(2)
|
|
location = trace[0].sub(/:in.*/,'')
|
|
Kernel::warn "#{location}: warning: #{message}"
|
|
end
|
|
|
|
def load_modules(module_list, mib_dir)
|
|
module_list.each { |m| @mib.load_module(m, mib_dir) }
|
|
end
|
|
|
|
def try_request(request, community=@community, host=@host, port=@port)
|
|
(@retries.to_i + 1).times do |n|
|
|
send_request(request, community, host, port)
|
|
begin
|
|
Timeout.timeout(@timeout) do
|
|
return get_response(request)
|
|
end
|
|
rescue Timeout::Error
|
|
# no action - try again
|
|
end
|
|
end
|
|
raise RequestTimeout, "host #{@config[:Host]} not responding", caller
|
|
end
|
|
|
|
def send_request(request, community, host, port)
|
|
message = Message.new(@snmp_version, community, request)
|
|
@transport.send(message.encode, host, port)
|
|
end
|
|
|
|
##
|
|
# Wait until response arrives. Ignore responses with mismatched IDs;
|
|
# these responses are typically from previous requests that timed out
|
|
# or almost timed out.
|
|
#
|
|
def get_response(request)
|
|
begin
|
|
data = @transport.recv(@max_bytes)
|
|
message = Message.decode(data)
|
|
response = message.pdu
|
|
end until request.request_id == response.request_id
|
|
response
|
|
end
|
|
end
|
|
|
|
class UDPServerTransport
|
|
def initialize(host, port)
|
|
@socket = UDPSocket.open
|
|
@socket.bind(host, port)
|
|
end
|
|
|
|
def close
|
|
@socket.close
|
|
end
|
|
|
|
def send(data, host, port)
|
|
@socket.send(data, 0, host, port)
|
|
end
|
|
|
|
def recvfrom(max_bytes)
|
|
data, host_info = @socket.recvfrom(max_bytes)
|
|
flags, host_port, host_name, host_ip = host_info
|
|
return data, host_ip, host_port
|
|
end
|
|
end
|
|
|
|
##
|
|
# == SNMP Trap Listener
|
|
#
|
|
# Listens to a socket and processes received traps and informs in a separate
|
|
# thread.
|
|
#
|
|
# === Example
|
|
#
|
|
# require 'snmp'
|
|
#
|
|
# m = SNMP::TrapListener.new(:Port => 1062, :Community => 'public') do |manager|
|
|
# manager.on_trap_default { |trap| p trap }
|
|
# end
|
|
# m.join
|
|
#
|
|
class TrapListener
|
|
DefaultConfig = {
|
|
:Host => 'localhost',
|
|
:Port => 162,
|
|
:Community => 'public',
|
|
:ServerTransport => UDPServerTransport,
|
|
:MaxReceiveBytes => 8000}
|
|
|
|
NULL_HANDLER = Proc.new {}
|
|
|
|
##
|
|
# Start a trap handler thread. If a block is provided then the block
|
|
# is executed before trap handling begins. This block is typically used
|
|
# to define the trap handler blocks.
|
|
#
|
|
# The trap handler blocks execute in the context of the trap handler thread.
|
|
#
|
|
# The most specific trap handler is executed when a trap arrives. Only one
|
|
# handler is executed. The handlers are checked in the following order:
|
|
#
|
|
# 1. handler for a specific OID
|
|
# 2. handler for a specific SNMP version
|
|
# 3. default handler
|
|
#
|
|
def initialize(config={}, &block)
|
|
@config = DefaultConfig.dup.update(config)
|
|
@transport = @config[:ServerTransport].new(@config[:Host], @config[:Port])
|
|
@max_bytes = @config[:MaxReceiveBytes]
|
|
@handler_init = block
|
|
@oid_handler = {}
|
|
@v1_handler = nil
|
|
@v2c_handler = nil
|
|
@default_handler = nil
|
|
@lock = Mutex.new
|
|
@handler_thread = Thread.new(self) { |m| process_traps(m) }
|
|
end
|
|
|
|
##
|
|
# Define the default trap handler. The default trap handler block is
|
|
# executed only if no other block is applicable. This handler should
|
|
# expect to receive both SNMPv1_Trap and SNMPv2_Trap objects.
|
|
#
|
|
def on_trap_default(&block)
|
|
raise ArgumentError, "a block must be provided" unless block
|
|
@lock.synchronize { @default_handler = block }
|
|
end
|
|
|
|
##
|
|
# Define a trap handler block for a specific trap ObjectId. This handler
|
|
# only applies to SNMPv2 traps. Note that symbolic OIDs are not
|
|
# supported by this method (like in the SNMP.Manager class).
|
|
#
|
|
def on_trap(object_id, &block)
|
|
raise ArgumentError, "a block must be provided" unless block
|
|
@lock.synchronize { @oid_handler[ObjectId.new(object_id)] = block }
|
|
end
|
|
|
|
##
|
|
# Define a trap handler block for all SNMPv1 traps. The trap yielded
|
|
# to the block will always be an SNMPv1_Trap.
|
|
#
|
|
def on_trap_v1(&block)
|
|
raise ArgumentError, "a block must be provided" unless block
|
|
@lock.synchronize { @v1_handler = block }
|
|
end
|
|
|
|
##
|
|
# Define a trap handler block for all SNMPv2c traps. The trap yielded
|
|
# to the block will always be an SNMPv2_Trap. Note that InformRequest
|
|
# is a subclass of SNMPv2_Trap, so inform PDUs are also received by
|
|
# this handler.
|
|
#
|
|
def on_trap_v2c(&block)
|
|
raise ArgumentError, "a block must be provided" unless block
|
|
@lock.synchronize { @v2c_handler = block }
|
|
end
|
|
|
|
##
|
|
# Joins the current thread to the trap handler thread.
|
|
#
|
|
# See also Thread#join.
|
|
#
|
|
def join
|
|
@handler_thread.join
|
|
end
|
|
|
|
##
|
|
# Stops the trap handler thread and releases the socket.
|
|
#
|
|
# See also Thread#exit.
|
|
#
|
|
def exit
|
|
@handler_thread.exit
|
|
@transport.close
|
|
end
|
|
|
|
alias kill exit
|
|
alias terminate exit
|
|
|
|
private
|
|
|
|
def process_traps(trap_listener)
|
|
@handler_init.call(trap_listener) if @handler_init
|
|
loop do
|
|
data, source_ip, source_port = @transport.recvfrom(@max_bytes)
|
|
begin
|
|
message = Message.decode(data)
|
|
if @config[:Community] == message.community
|
|
trap = message.pdu
|
|
if trap.kind_of?(InformRequest)
|
|
@transport.send(message.response.encode, source_ip, source_port)
|
|
end
|
|
trap.source_ip = source_ip
|
|
select_handler(trap).call(trap)
|
|
end
|
|
rescue => e
|
|
puts "Error handling trap: #{e}"
|
|
puts e.backtrace.join("\n")
|
|
puts "Received data:"
|
|
p data
|
|
end
|
|
end
|
|
end
|
|
|
|
def select_handler(trap)
|
|
@lock.synchronize do
|
|
if trap.kind_of?(SNMPv2_Trap)
|
|
oid = trap.trap_oid
|
|
if @oid_handler[oid]
|
|
return @oid_handler[oid]
|
|
elsif @v2c_handler
|
|
return @v2c_handler
|
|
elsif @default_handler
|
|
return @default_handler
|
|
else
|
|
return NULL_HANDLER
|
|
end
|
|
elsif trap.kind_of?(SNMPv1_Trap)
|
|
if @v1_handler
|
|
return @v1_handler
|
|
elsif @default_handler
|
|
return @default_handler
|
|
else
|
|
return NULL_HANDLER
|
|
end
|
|
else
|
|
return NULL_HANDLER
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
end
|
|
|