131 lines
4.2 KiB
Python
131 lines
4.2 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright Grégory Soutadé 2015
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# This file is part of iwla
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# iwla is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# iwla is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with iwla. If not, see <http://www.gnu.org/licenses/>.
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#
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import importlib
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import inspect
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import logging
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#
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# IWLA Plugin interface
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#
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class IPlugin(object):
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def __init__(self, iwla):
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self.iwla = iwla
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self.requires = []
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self.conf_requires = []
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self.API_VERSION = 1
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self.ANALYSIS_CLASS = 'HTTP'
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def isValid(self, analysis_class, api_version):
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if analysis_class != self.ANALYSIS_CLASS: return False
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# For now there is only version 1
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if self.API_VERSION != api_version:
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return False
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return True
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def getRequirements(self):
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return self.requires
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def getConfRequirements(self):
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return self.conf_requires
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def load(self):
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return True
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def hook(self):
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pass
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def validConfRequirements(conf_requirements, iwla, plugin_path):
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for r in conf_requirements:
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if iwla.getConfValue(r, None) is None:
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print '\'%s\' conf value required for %s' % (r, plugin_path)
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return False
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return True
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def preloadPlugins(plugins, iwla):
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cache_plugins = {}
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logger = logging.getLogger(__name__)
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logger.info("==> Preload plugins")
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for (root, plugins_filenames) in plugins:
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for plugin_filename in plugins_filenames:
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plugin_path = root + '.' + plugin_filename
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try:
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mod = importlib.import_module(plugin_path)
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classes = [c for _,c in inspect.getmembers(mod)\
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if inspect.isclass(c) and \
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issubclass(c, IPlugin) and \
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c.__name__ != 'IPlugin' and \
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not c.__subclasses__()
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]
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if not classes:
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logger.warning('No plugin defined in %s' % (plugin_path))
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continue
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if len(classes) > 1:
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logger.warning('More than one class found in %s, loading may fail. Selecting %s' % (plugin_path, classes[0]))
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print classes
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continue
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plugin = classes[0](iwla)
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plugin_name = plugin.__class__.__name__
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if not plugin.isValid(iwla.ANALYSIS_CLASS, iwla.API_VERSION):
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#print 'Plugin not valid %s' % (plugin_filename)
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continue
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#print 'Load plugin %s' % (plugin_name)
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conf_requirements = plugin.getConfRequirements()
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if not validConfRequirements(conf_requirements, iwla, plugin_path):
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continue
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requirements = plugin.getRequirements()
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requirement_validated = False
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for r in requirements:
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for p in cache_plugins.values():
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if p.__class__.__name__ == r:
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requirement_validated = True
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break
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if not requirement_validated:
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logger.error('Missing requirements \'%s\' for plugin %s' % (r, plugin_path))
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break
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if requirements and not requirement_validated: continue
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if not plugin.load():
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logger.error('Plugin %s load failed' % (plugin_path))
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continue
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logger.info('\tRegister %s' % (plugin_path))
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cache_plugins[plugin_path] = plugin
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except Exception as e:
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logger.exception('Error loading %s => %s' % (plugin_path, e))
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return cache_plugins
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