156 lines
5.4 KiB
Python
156 lines
5.4 KiB
Python
# -*- coding:utf-8 -*-
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#
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# Copyright 2014 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import sys
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import yaml
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from bandit.core import constants
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class BanditConfig():
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_config = dict()
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_logger = None
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_settings = dict()
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def __init__(self, logger, config_file):
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'''Attempt to initialize a config dictionary from a yaml file.
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Error out if loading the yaml file fails for any reason.
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:param logger: Logger to be used in the case of errors
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:param config_file: The Bandit yaml config file
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:return: -
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'''
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self._logger = logger
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try:
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f = open(config_file, 'r')
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except IOError:
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logger.error("could not open config file: %s", config_file)
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sys.exit(2)
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else:
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try:
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self._config = yaml.safe_load(f)
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except yaml.YAMLError:
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logger.error("Invalid config file specified: %s", config_file)
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sys.exit(2)
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self._init_settings()
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def get_option(self, option_string):
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'''Returns the option from the config specified by the option_string.
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'.' can be used to denote levels, for example to retrieve the options
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from the 'a' profile you can use 'profiles.a'
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:param option_string: The string specifying the option to retrieve
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:return: The object specified by the option_string, or None if it can't
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be found.
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'''
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option_levels = option_string.split('.')
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cur_item = self._config
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for level in option_levels:
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if level in cur_item:
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try:
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cur_item = cur_item[level]
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except Exception:
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self._logger.error(
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"error while accessing config property: %s",
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option_string
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)
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return None
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else:
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return None
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return cur_item
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def get_setting(self, setting_name):
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if setting_name in self._settings:
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return self._settings[setting_name]
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else:
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return None
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@property
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def config(self):
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'''Property to return the config dictionary
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:return: Config dictionary
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'''
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return self._config
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def _init_settings(self):
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'''This function calls a set of other functions (one per setting)
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This function calls a set of other functions (one per setting) to build
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out the _settings dictionary. Each other function will set values from
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the config (if set), otherwise use defaults (from constants if
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possible).
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:return: -
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'''
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self._init_progress_increment()
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self._init_output_colors()
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self._init_plugin_name_pattern()
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def _init_progress_increment(self):
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'''Sets settings['progress'] from default or config file.'''
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progress = constants.progress_increment
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if self.get_option('show_progress_every'):
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progress = self.get_option('show_progress_every')
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self._settings['progress'] = progress
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def _init_output_colors(self):
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'''Sets the settings colors
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sets settings['color_xxx'] where xxx is DEFAULT, HEADER, LOW, MEDIUM,
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HIGH
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'''
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colors = ['HEADER', 'DEFAULT', 'LOW', 'MEDIUM', 'HIGH']
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color_settings = dict()
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isatty = hasattr(sys.stdout, "isatty") and sys.stdout.isatty()
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for color in colors:
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# if not a TTY, overwrite color codes in configuration
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if not isatty:
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color_settings[color] = ""
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# else read color codes in from the config
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else:
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# grab the default color from constant
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color_settings[color] = constants.color[color]
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# check if the option has been set in config file
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options_string = 'output_colors.' + color
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if self.get_option(options_string):
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color_string = self.get_option(options_string)
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# some manipulation is needed because escape string doesn't
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# come back from yaml correctly
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if color_string.find('['):
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right_half = color_string[color_string.find('['):]
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left_half = '\033'
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color_settings[color] = left_half + right_half
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# update the settings dict with the color value
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settings_string = 'color_' + color
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self._settings[settings_string] = color_settings[color]
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def _init_plugin_name_pattern(self):
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'''Sets settings['plugin_name_pattern'] from default or config file.'''
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plugin_name_pattern = constants.plugin_name_pattern
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if self.get_option('plugin_name_pattern'):
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plugin_name_pattern = self.get_option('plugin_name_pattern')
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self._settings['plugin_name_pattern'] = plugin_name_pattern
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