我有以下代码:

import paramiko
policy = paramiko.client.WarningPolicy()
client = paramiko.client.SSHClient()
client.set_missing_host_key_policy(policy)
username = '...'
password = '...'
file_path = '...'
pkey = paramiko.RSAKey.from_private_key_file(file_path)
client.connect('...', username=username, password=password, pkey=key)
sftp = client.open_sftp()

从文档来看,它似乎应该可以工作。一切正常,但是当代码命中 client.open_sftp 时,它​​会使用 SSHException: Unable to open channel. 进行轰炸,并且传输(来自 client.get_transport )处于事件状态但未经过身份验证。我也无法为此启用调试日志记录(我正在尝试 logging.getLogger('paramiko').setLevel(logging.DEBUG) 但没有成功。)

关于我可以从哪里开始调试这个非常模糊的错误消息的任何想法?

最佳答案

抱歉回复晚了,但这个问题真的很难找到任何信息,所以我想为其他陷入这个问题的人发布一个解决方案。
在试图解决这个问题之后,我找到了一个解决方案,这要归功于 Doug Ellwanger 和 Daniel Brownridge 发布的一些代码。问题似乎是由使用更多交互风格处理多因素身份验证的方式引起的。

import paramiko
import threading

...

username = '...'
password = '...'
file_path = '...'
pkey = paramiko.RSAKey.from_private_key_file(file_path)
sftpClient = multifactor_auth('...', 22, username, pkey, password)

...

def multifactor_auth_sftp_client(host, port, username, key, password):
    #Create an SSH transport configured to the host
    transport = paramiko.Transport((host, port))
    #Negotiate an SSH2 session
    transport.connect()
    #Attempt authenticating using a private key
    transport.auth_publickey(username, key)
    #Create an event for password auth
    password_auth_event = threading.Event()
    #Create password auth handler from transport
    password_auth_handler = paramiko.auth_handler.AuthHandler(transport)
    #Set transport auth_handler to password handler
    transport.auth_handler = password_auth_handler
    #Aquire lock on transport
    transport.lock.acquire()
    #Register the password auth event with handler
    password_auth_handler.auth_event = password_auth_event
    #Set the auth handler method to 'password'
    password_auth_handler.auth_method = 'password'
    #Set auth handler username
    password_auth_handler.username = username
    #Set auth handler password
    password_auth_handler.password = password
    #Create an SSH user auth message
    userauth_message = paramiko.message.Message()
    userauth_message.add_string('ssh-userauth')
    userauth_message.rewind()
    #Make the password auth attempt
    password_auth_handler._parse_service_accept(userauth_message)
    #Release lock on transport
    transport.lock.release()
    #Wait for password auth response
    password_auth_handler.wait_for_response(password_auth_event)
    #Create an open SFTP client channel
    return transport.open_sftp_client()
我希望这会有所帮助,它适用于我的项目。

关于python - 使用 Paramiko 进行多因素身份验证(密码和 key ),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/28837089/

10-15 10:26