2014-07-30 15:07:53 +00:00
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# @note needs to use explicit nesting. so this file can be loaded directly without loading 'metasploit/framework', this
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# file can be used prior to Bundler.require.
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module Metasploit
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module Framework
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# Extension to `Kernel#require` behavior.
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module Require
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#
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# Module Methods
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#
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# Tries to require `name`. If a `LoadError` occurs, then `without_warning` is printed to standard error using
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# `Kernel#warn`, along with instructions for reinstalling the bundle. If a `LoadError` does not occur, then
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# `with_block` is called.
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#
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# @param name [String] the name of the library to `Kernel#require`.
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# @param without_warning [String] warning to print if `name` cannot be required.
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# @yield block to run when `name` requires successfully
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# @yieldreturn [void]
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# @return [void]
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def self.optionally(name, without_warning)
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begin
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require name
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rescue LoadError
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warn without_warning
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warn "Bundle installed '--without #{Bundler.settings.without.join(' ')}'"
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warn "To clear the without option do `bundle install --without ''` " \
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"(the --without flag with an empty string) or " \
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"`rm -rf .bundle` to remove the .bundle/config manually and " \
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"then `bundle install`"
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else
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if block_given?
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yield
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end
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end
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end
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# Tries to `require 'active_record/railtie'` to define the activerecord Rails initializers and rake tasks.
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#
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# @example Optionally requiring 'active_record/railtie'
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# require 'metasploit/framework/require'
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#
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# class MyClass
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# def setup
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# if database_enabled
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# Metasploit::Framework::Require.optionally_active_record_railtie
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# end
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# end
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# end
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#
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# @return [void]
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def self.optionally_active_record_railtie
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2014-08-22 15:33:50 +00:00
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if ::File.exist?(Rails.application.config.paths['config/database'].first)
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optionally(
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2014-07-30 15:07:53 +00:00
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'active_record/railtie',
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'activerecord not in the bundle, so database support will be disabled.'
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2014-08-22 15:33:50 +00:00
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)
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else
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warn 'Could not find database.yml, so database support will be disabled.'
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end
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2014-07-30 15:07:53 +00:00
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end
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# Tries to `require 'metasploit/credential/creation'` and include it in the `including_module`.
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#
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# @param including_module [Module] `Class` or `Module` that wants to `include Metasploit::Credential::Creation`.
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# @return [void]
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def self.optionally_include_metasploit_credential_creation(including_module)
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optionally(
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'metasploit/credential/creation',
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"metasploit-credential not in the bundle, so Metasploit::Credential creation will fail for #{including_module.name}",
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) do
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including_module.send(:include, Metasploit::Credential::Creation)
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end
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end
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2014-10-03 18:49:39 +00:00
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# Tries to require gems necessary for using a database with the framework.
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2014-10-02 19:46:56 +00:00
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#
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# @example
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2014-10-03 18:49:39 +00:00
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# Metasploit::Framework::Require.optionally_require_metasploit_db_gems
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2014-10-02 19:46:56 +00:00
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#
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# @return [void]
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2014-10-03 19:06:13 +00:00
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def self.optionally_require_metasploit_db_gem_engines
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2014-10-02 19:46:56 +00:00
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optionally(
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'metasploit/credential/engine',
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2014-10-03 18:49:39 +00:00
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'metasploit-credential not in the bundle',
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)
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optionally(
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'metasploit_data_models/engine',
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'metaspoit_data_models not in the bundle'
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2014-10-02 19:46:56 +00:00
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)
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end
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2014-07-30 15:07:53 +00:00
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#
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# Instance Methods
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#
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# Tries to `require 'metasploit/credential/creation'` and include it in this `Class` or `Module`.
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#
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# @example Using in a `Module`
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# require 'metasploit/framework/require'
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#
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# module MyModule
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# extend Metasploit::Framework::Require
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#
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# optionally_include_metasploit_credential_creation
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# end
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#
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# @return [void]
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def optionally_include_metasploit_credential_creation
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Metasploit::Framework::Require.optionally_include_metasploit_credential_creation(self)
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end
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end
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end
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2014-08-22 15:33:50 +00:00
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end
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