Current File : //lib/python3/dist-packages/gpg/callbacks.py
# Copyright (C) 2004 Igor Belyi <belyi@users.sourceforge.net>
# Copyright (C) 2002 John Goerzen <jgoerzen@complete.org>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from __future__ import absolute_import, print_function, unicode_literals
from getpass import getpass
del absolute_import, print_function, unicode_literals
def passphrase_stdin(hint, desc, prev_bad, hook=None):
"""This is a sample callback that will read a passphrase from
the terminal. The hook here, if present, will be used to describe
why the passphrase is needed."""
why = ''
if hook is not None:
why = ' ' + hook
if prev_bad:
why += ' (again)'
print("Please supply %s' password%s:" % (hint, why))
return getpass()
def progress_stdout(what, type, current, total, hook=None):
print("PROGRESS UPDATE: what = %s, type = %d, current = %d, total = %d" %
(what, type, current, total))
def readcb_fh(count, hook):
"""A callback for data. hook should be a Python file-like object."""
if count:
# Should return '' on EOF
return hook.read(count)
else:
# Wants to rewind.
if not hasattr(hook, 'seek'):
return None
hook.seek(0, 0)
return None
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