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# frozen_string_literal: true
#
# Copyright (c) 2004-2014 David R. Halliday
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
module SNMP
##
# Helper class for processing options Hash.
#
class Options #:nodoc:
class << self
attr_reader :alternates
def option(symbol, alternate, defaulter=nil)
@alternates ||= {}
@alternates[symbol] = alternate
define_method(symbol) do
alternate_symbol = self.class.alternates[symbol]
option_value = @config[symbol] || @config[alternate_symbol] ||
(defaulter.kind_of?(Proc) ? defaulter.call(self) : defaulter)
@applied_config[symbol] = @applied_config[alternate_symbol] = option_value
end
end
def default_modules
["SNMPv2-SMI", "SNMPv2-MIB", "IF-MIB", "IP-MIB", "TCP-MIB", "UDP-MIB"]
end
def choose_transport(klass, config)
address_family = config.use_IPv6 ? Socket::AF_INET6 : Socket::AF_INET
klass.new(address_family)
end
def ipv6_address?(config)
hostname = config.host.to_s
hostname.include?("::") || hostname.split(":").size == 8
end
end
attr_reader :applied_config
def initialize(config)
@config = validate_keys(config)
@applied_config = {}
end
def validate_keys(config)
valid_symbols = self.class.alternates.keys + self.class.alternates.values
config.each_key { |k| raise "Invalid option: #{k}" unless valid_symbols.include? k }
config
end
def socket_address_family
use_IPv6 ? Socket::AF_INET6 : Socket::AF_INET
end
end
end
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