h00die
143 lines
4.0 KiB
Ruby
143 lines
4.0 KiB
Ruby
# -*- coding: binary -*-
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# Copyright (c) 2010, patrickHVE@googlemail.com
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * The names of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL patrickHVE@googlemail.com BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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require 'thread'
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module Rex
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module Post
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module Meterpreter
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module Extensions
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module Stdapi
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module Railgun
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#
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# A container holding useful API Constants.
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#
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class ApiConstants
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# This will be lazily loaded in self.manager
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@manager = nil
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# Mutex to ensure we don't add constants more than once via thread races.
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@manager_semaphore = Mutex.new
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class << self
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attr_accessor :manager_semaphore
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end
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def self.inherited(child_class)
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child_class.manager_semaphore = Mutex.new
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end
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#
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# Provides a frozen constant manager for the constants defined in
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# self.add_constants
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#
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def self.manager
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# The first check for nil is to potentially skip the need to synchronize
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if @manager.nil?
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# Looks like we MAY need to load manager
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@manager_semaphore.synchronize do
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# We check once more. Now our options are synchronized
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if @manager.nil?
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@manager = ConstManager.new
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self.add_constants(@manager)
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@manager.freeze
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end
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end
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end
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return @manager
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end
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end
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#
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# Manages our library of constants
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#
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class ConstManager
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attr_reader :consts
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def initialize(initial_consts = {})
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@consts = {}
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initial_consts.each_pair do |name, value|
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add_const(name, value)
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end
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end
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def add_const(name, value)
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consts[name] = value
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end
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# parses a string containing constants and returns an integer
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# the string can be either "CONST" or "CONST1 | CONST2"
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#
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# this function will NOT throw an exception but return "nil" if it can't parse a string
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def parse(s)
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if s.class != String
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return nil # it's not even a string'
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end
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return_value = 0
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for one_const in s.split('|')
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one_const = one_const.strip()
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if not consts.has_key? one_const
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return nil # at least one "Constant" is unknown to us
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end
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return_value |= consts[one_const]
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end
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return return_value
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end
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def is_parseable(s)
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return !parse(s).nil?
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end
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#
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# Returns an array of constant names that have a value matching "const"
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# and (optionally) a name that matches "filter_regex"
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#
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def select_const_names(const, filter_regex=nil)
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matches = []
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consts.each_pair do |name, value|
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matches << name if value == const
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end
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# Filter matches by name if a filter has been provided
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unless filter_regex.nil?
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matches.reject! do |name|
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name !~ filter_regex
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end
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end
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return matches
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end
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end
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end; end; end; end; end; end
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