mirror of https://github.com/Mikaela/Limnoria.git
90 lines
3.3 KiB
Python
90 lines
3.3 KiB
Python
###
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# Copyright (c) 2012, Valentin Lorentz
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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import os
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import supybot.log as log
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import supybot.conf as conf
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found_gnupg_lib = False
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found_gnupg_bin = False
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try:
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import gnupg
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except ImportError:
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# As we do not want Supybot to depend on GnuPG, we will use it only if
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# it is available. Otherwise, we just don't allow user auth through GPG.
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log.debug('Cannot import gnupg, using fallback.')
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gnupg = None
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try:
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if gnupg:
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gnupg.GPG(gnupghome=None)
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found_gnupg_lib = found_gnupg_bin = True
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except TypeError:
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# This is the 'gnupg' library, not 'python-gnupg'.
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gnupg = None
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log.error('Cannot use GPG. gnupg (a Python package) is installed, '
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'but python-gnupg (an other Python package) should be '
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'installed instead.')
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except OSError:
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gnupg = None
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found_gnupg_lib = True
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log.error('Cannot use GPG. python-gnupg is installed but cannot '
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'find the gnupg executable.')
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available = (gnupg is not None)
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def fallback(default_return=None):
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"""Decorator.
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Does nothing if gnupg is loaded. Otherwise, returns the supplied
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default value."""
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def decorator(f):
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if available:
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def newf(*args, **kwargs):
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return f(*args, **kwargs)
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else:
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def newf(*args, **kwargs):
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return default_return
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return newf
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return decorator
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@fallback()
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def loadKeyring():
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global keyring
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path = os.path.abspath(conf.supybot.directories.data.dirize('GPGkeyring'))
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if not os.path.isdir(path):
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log.info('Creating directory %s' % path)
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os.mkdir(path, 0o700)
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assert os.path.isdir(path)
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keyring = gnupg.GPG(gnupghome=path)
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loadKeyring()
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# Reload the keyring if path changed
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conf.supybot.directories.data.addCallback(loadKeyring)
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