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EDIT :: 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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