mirror of
https://github.com/Tygs/0bin.git
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108 lines
2.8 KiB
Python
108 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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import time
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import os
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import glob
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import tempfile
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import sys
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import default_settings
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sys.path.append(default_settings.LIBS_DIR)
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try:
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from privilege import drop_privileges_permanently, coerce_user, coerce_group
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except (AttributeError):
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pass # privilege does't work on several plateform
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def drop_privileges(user=None, group=None, wait=5):
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"""
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Try to set the process user and group to another one.
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If no group is provided, it's set to the same as the user.
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You can wait for a certain time before doing so.
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"""
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if wait:
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time.sleep(wait)
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if user:
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group = group or user
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try:
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user = coerce_user(user)
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group = coerce_group(group)
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lock_files = glob.glob(os.path.join(tempfile.gettempdir(),
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'bottle.*.lock'))
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for lock_file in lock_files:
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os.chown(lock_file, user, group)
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drop_privileges_permanently(user, group, ())
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except Exception:
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print "Failed to drop privileges. Running with current user."
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def dmerge(*args):
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"""
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Return new directionay being the sum of all merged dictionaries passed
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as arguments
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"""
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dictionary = {}
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for arg in args:
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dictionary.update(arg)
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return dictionary
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class SettingsValidationError(Exception): pass
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class SettingsContainer(object):
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"""
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Singleton containing the settings for the whole app
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"""
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_instance = None
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def __new__(cls, *args, **kwargs):
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if not cls._instance:
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cls._instance = super(SettingsContainer, cls).__new__(cls, *args,
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**kwargs)
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cls._instance.update_with_module(default_settings)
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return cls._instance
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def update_with_module(self, module):
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"""
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Update settings with values from the given module.
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(Taking only variable with uppercased name)
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"""
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for name, value in module.__dict__.iteritems():
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if name.isupper():
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setattr(self, name, value)
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return self
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@classmethod
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def from_module(cls, module):
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"""
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Create an instance of SettingsContainer with values based
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on the one in the passed module.
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"""
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settings = cls()
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settings.update_with_module(module)
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return settings
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def update_with_file(self, filepath):
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"""
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Update settings with values from the given module file.
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User update_with_module() behind the scene
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"""
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sys.path.insert(0, os.path.dirname(filepath))
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module_name = os.path.splitext(os.path.basename(filepath))[0]
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return self.update_with_module(__import__(module_name))
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settings = SettingsContainer()
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