98 lines
2.1 KiB
Ruby
98 lines
2.1 KiB
Ruby
require 'msf/core/plugin'
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module Msf
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###
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#
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# This class manages the loading and unloading plugins. All plugins must
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# implement the Plugin base class interface.
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#
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###
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class PluginManager < Array
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include Framework::Offspring
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#
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# The hash of path names to classes that is used during load.
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#
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@@path_hash = {}
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#
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# Check the hash using the supplied path name to see if there is already a
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# class association.
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#
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def self.check_path_hash(path)
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@@path_hash[path]
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end
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#
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# Set the class that's associated with the supplied hash.
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#
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def self.set_path_hash(path, klass)
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@@path_hash[path] = klass
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end
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#
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# Initializes the plugin manager.
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#
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def initialize(framework)
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self.framework = framework
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end
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#
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# Loads a plugin from the supplied path and returns the instance that is
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# created as a result.
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#
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def load(path, opts = {})
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# Check to see if a plugin from this path has already been loaded
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# before.
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if ((klass = self.class.check_path_hash(path)) == nil)
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old = Msf::Plugin.constants
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require(path)
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new = Msf::Plugin.constants
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# No new classes added?
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if ((diff = new - old).empty?)
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raise RuntimeError, "No classes were loaded from #{path} in the Msf::Plugin namespace."
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end
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# Grab the class
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klass = Msf::Plugin.const_get(diff[0])
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# Cache the path to class association for future reference
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self.class.set_path_hash(path, klass)
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# If it's already been loaded, go ahead and try to re-load it in case
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# the contents have changed.
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else
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Kernel.load(path + ".rb")
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end
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# Create an instance of the plugin and let it initialize
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instance = klass.create(framework, opts)
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# Add it to the list of plugins
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if (self.member?(instance) == false)
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self.unshift(instance)
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end
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# Return the instance to the caller
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instance
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end
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#
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# Unloads a plugin using the instance that was returned from a previous
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# call to load.
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#
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def unload(inst)
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# If the reference count drops to zero, remove it from the list of
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# loaded plugins. This will indirectly call the cleanup method on the
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# plugin.
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if (inst.deref == true)
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delete(inst)
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end
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end
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end
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end
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