Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /lib/python3/dist-packages/twisted/plugins/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

# -*- test-case-name: twisted.test.test_strcred -*-
#
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Cred plugin for ssh key login.
"""

from __future__ import absolute_import, division

from zope.interface import implementer

from twisted import plugin
from twisted.cred.strcred import ICheckerFactory


sshKeyCheckerFactoryHelp = """
This allows SSH public key authentication, based on public keys listed in
authorized_keys and authorized_keys2 files in user .ssh/ directories.
"""


try:
    from twisted.conch.checkers import (
        SSHPublicKeyChecker, UNIXAuthorizedKeysFiles)

    @implementer(ICheckerFactory, plugin.IPlugin)
    class SSHKeyCheckerFactory(object):
        """
        Generates checkers that will authenticate a SSH public key
        """
        authType = 'sshkey'
        authHelp = sshKeyCheckerFactoryHelp
        argStringFormat = 'No argstring required.'
        credentialInterfaces = SSHPublicKeyChecker.credentialInterfaces


        def generateChecker(self, argstring=''):
            """
            This checker factory ignores the argument string. Everything
            needed to authenticate users is pulled out of the public keys
            listed in user .ssh/ directories.
            """
            return SSHPublicKeyChecker(UNIXAuthorizedKeysFiles())



    theSSHKeyCheckerFactory = SSHKeyCheckerFactory()

except ImportError:
    # if checkers can't be imported, then there should be no SSH cred plugin
    pass