140 lines
4.8 KiB
Python
140 lines
4.8 KiB
Python
# Copyright (C) 2006 Gustavo J. A. M. Carneiro <gjcarneiro AT gmail.com>
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# Nikos Kouremenos <kourem AT gmail.com>
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# Copyright (C) 2006-2014 Yann Leboulanger <asterix AT lagaule.org>
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# Copyright (C) 2007 Jean-Marie Traissard <jim AT lapin.org>
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# Julien Pivotto <roidelapluie AT gmail.com>
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# Copyright (C) 2008 Stephan Erb <steve-e AT h3c.de>
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# Copyright (c) 2009 Thorsten Glaser <t.glaser AT tarent.de>
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#
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# This file is part of Gajim.
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#
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# Gajim 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
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# by the Free Software Foundation; version 3 only.
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#
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# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
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import logging
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from gajim.common import app
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__all__ = ['get_password', 'save_password']
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log = logging.getLogger('gajim.password')
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keyring = None
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try:
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import keyring
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except ImportError:
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log.debug('python-keyring missing, falling back to plaintext storage')
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class PasswordStorage:
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"""Interface for password stores"""
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def get_password(self, account_name):
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"""Return the password for account_name, or None if not found."""
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raise NotImplementedError
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def save_password(self, account_name, password):
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"""Save password for account_name. Return a bool indicating success."""
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raise NotImplementedError
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class SecretPasswordStorage(PasswordStorage):
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""" Store password using Keyring """
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identifier = 'keyring:'
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def __init__(self):
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self.keyring = keyring.get_keyring()
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def save_password(self, account_name, password):
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try:
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self.keyring.set_password('gajim', account_name, password)
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return True
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except Exception as error:
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log.warning('Save password failed')
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log.debug(error)
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return False
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def get_password(self, account_name):
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log.debug('getting password')
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return self.keyring.get_password('gajim', account_name)
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class PasswordStorageManager(PasswordStorage):
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"""Access all the implemented password storage backends, knowing which ones
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are available and which we prefer to use.
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Also implements storing directly in gajim config."""
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def __init__(self):
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self.preferred_backend = None
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self.secret = None
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self.connect_backends()
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self.set_preferred_backend()
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def connect_backends(self):
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"""Initialize backend connections, determining which ones are available.
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"""
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# TODO: handle disappearing backends
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if app.config.get('use_keyring') and keyring:
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self.secret = SecretPasswordStorage()
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def get_password(self, account_name):
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pw = app.config.get_per('accounts', account_name, 'password')
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if not pw:
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return pw
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if pw.startswith(SecretPasswordStorage.identifier) and self.secret:
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backend = self.secret
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else:
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backend = None
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if backend:
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pw = backend.get_password(account_name)
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if backend != self.preferred_backend:
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# migrate password to preferred_backend
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self.save_password(account_name, pw)
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# TODO: remove from old backend
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return pw
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def save_password(self, account_name, password):
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if self.preferred_backend:
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if self.preferred_backend.save_password(account_name, password):
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app.config.set_per('accounts', account_name, 'password',
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self.preferred_backend.identifier)
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if account_name in app.connections:
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app.connections[account_name].password = password
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return True
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app.config.set_per('accounts', account_name, 'password', password)
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if account_name in app.connections:
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app.connections[account_name].password = password
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return True
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def set_preferred_backend(self):
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if self.secret:
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self.preferred_backend = self.secret
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else:
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self.preferred_backend = None
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passwordStorageManager = None
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def get_storage():
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global passwordStorageManager
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if not passwordStorageManager:
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passwordStorageManager = PasswordStorageManager()
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return passwordStorageManager
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def get_password(account_name):
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return get_storage().get_password(account_name)
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def save_password(account_name, password):
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if account_name in app.connections:
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app.connections[account_name].set_password(password)
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return get_storage().save_password(account_name, password)
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