def format_openssh_pubkey(key: PKey) -> str:
"""Format the given ``key`` to an OpenSSH public key line, used by
:file:`authorized_keys`, :file:`id_rsa.pub`, etc.
:param key: the key object to format
:type key: :class:`paramiko.pkey.PKey`
:return: a formatted openssh public key line
:rtype: :class:`str`
"""
return '{} {} '.format(key.get_name(), key.get_base64())
def format_openssh_pubkey(key: PKey) -> str:
"""Format the given ``key`` to an OpenSSH public key line, used by
:file:`authorized_keys`, :file:`id_rsa.pub`, etc.
:param key: the key object to format
:type key: :class:`paramiko.pkey.PKey`
:return: a formatted openssh public key line
:rtype: :class:`str`
"""
return '{} {} '.format(key.get_name(), key.get_base64())
def check_auth_publickey(self, username: Text, key: PKey) -> int:
ssh_pub_key = SSHKey(f"{key.get_name()} {key.get_base64()}")
ssh_pub_key.parse()
logging.debug("check_auth_publickey: username=%s, key=%s %s %sbits",
username, key.get_name(), ssh_pub_key.hash_sha256(),
ssh_pub_key.bits)
if self.session.session_log_dir:
os.makedirs(self.session.session_log_dir, exist_ok=True)
pubkeyfile_path = os.path.join(self.session.session_log_dir,
'publickeys')
with open(pubkeyfile_path, 'a+') as pubkeyfile:
pubkeyfile.write(
f"{key.get_name()} {key.get_base64()} saved-from-auth-publickey\n"
)
if self.args.disable_pubkey_auth:
logging.debug(
"Publickey login attempt, but publickey auth was disabled!")
return paramiko.common.AUTH_FAILED
if self.args.accept_first_publickey:
logging.debug('host probing disabled - first key accepted')
if self.args.disallow_publickey_auth:
logging.debug(
'ignoring argument --disallow-publickey-auth, first key still accepted'
)
self.session.authenticator.authenticate(username, key=None)
self.session.accepted_key = key
return paramiko.common.AUTH_SUCCESSFUL
auth_result: int = self.session.authenticator.authenticate(username,
key=key)
if auth_result == paramiko.common.AUTH_SUCCESSFUL:
self.session.accepted_key = key
if self.session.accepted_key is not None and self.args.enable_trivial_auth:
logging.debug("found valid key for trivial authentication")
return paramiko.common.AUTH_FAILED
if self.args.disallow_publickey_auth:
return paramiko.common.AUTH_FAILED
return auth_result
def _get_key_params(self, public_key: PKey) -> Tuple[str, str]:
return public_key.get_name(), get_key_fingerprint(public_key, '')
