130 lines
4.5 KiB
Ruby
130 lines
4.5 KiB
Ruby
#
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# Copyright 2012 Wade Alcorn wade@bindshell.net
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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module BeEF
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module Core
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class Configuration
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include Singleton
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# Loads the default configuration system
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# @param [String] configuration_file Configuration file to be loaded, by default loads $root_dir/config.yaml
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def initialize(configuration_file="#{$root_dir}/config.yaml")
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# argument type checking
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raise Exception::TypeError, '"configuration_file" needs to be a string' if not configuration_file.string?
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# test to make sure file exists
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raise Exception::TypeError, 'Configuration yaml cannot be found' if not File.exist?(configuration_file)
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begin
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#open base config
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@config = self.load(configuration_file)
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# set default value if key? does not exist
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@config.default = nil
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rescue Exception => e
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print_error "Fatal Error: cannot load configuration file"
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print_debug e
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end
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end
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# Loads yaml file
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# @param [String] file YAML file to be loaded
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# @return [Hash] YAML formatted hash
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def load(file)
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begin
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return nil if not File.exists?(file)
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raw = File.read(file)
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return YAML.load(raw)
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rescue Exception => e
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print_debug "Unable to load '#{file}' #{e}"
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return nil
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end
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end
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# Returns the value of a selected key in the configuration file.
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# @param [String] key Key of configuration item
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# @return [Hash|String] The resulting value stored against the 'key'
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def get(key)
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subkeys = key.split('.')
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lastkey = subkeys.pop
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subhash = subkeys.inject(@config) do |hash, k|
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hash[k]
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end
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return (subhash != nil and subhash.has_key?(lastkey)) ? subhash[lastkey] : nil
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end
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# Sets the give key value pair to the config instance
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# @param [String] key The configuration key
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# @param value The value to be stored against the 'key'
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# @return [Boolean] If the store procedure was successful
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def set(key, value)
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subkeys = key.split('.').reverse
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return false if subkeys.length == 0
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hash = {subkeys.shift.to_s => value}
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subkeys.each{|v|
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hash = {v.to_s => hash}
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}
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@config = @config.deep_merge(hash)
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return true
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end
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# Clears the given key hash
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# @param [String] key Configuration key to be cleared
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# @return [Boolean] If the configuration key was cleared
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def clear(key)
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subkeys = key.split('.')
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return false if subkeys.length == 0
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lastkey = subkeys.pop
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hash = @config
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subkeys.each{|v|
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hash = hash[v]
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}
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return (hash.delete(lastkey) == nil) ? false : true
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end
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# Load extensions configurations
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def load_extensions_config
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self.set('beef.extension', {})
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Dir.glob("#{$root_dir}/extensions/*/config.yaml") do | cf |
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y = self.load(cf)
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if y != nil
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y['beef']['extension'][y['beef']['extension'].keys.first]['path'] = cf.gsub(/config\.yaml/, '').gsub(/#{$root_dir}\//, '')
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@config = y.deep_merge(@config)
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else
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print_error "Unable to load extension configuration '#{cf}'"
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end
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end
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end
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# Load module configurations
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def load_modules_config
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self.set('beef.module', {})
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Dir.glob("#{$root_dir}/modules/**/*/config.yaml") do | cf |
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y = self.load(cf)
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if y != nil
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y['beef']['module'][y['beef']['module'].keys.first]['path'] = cf.gsub(/config\.yaml/, '').gsub(/#{$root_dir}\//, '')
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@config = y.deep_merge(@config)
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# API call for post module config load
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BeEF::API::Registrar.instance.fire(BeEF::API::Configuration, 'module_configuration_load', y['beef']['module'].keys.first)
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else
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print_error "Unable to load module configuration '#{cf}'"
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end
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end
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end
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end
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end
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end
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