def _password_auth(cls, transport_key, username, passwd):
while True:
if cls.debug: dprint("username=%s, passwd=%s" % (username, passwd))
if not passwd:
if transport_key in cls.credentials:
username, passwd = cls.credentials[transport_key]
if cls.debug: dprint("Found cached credentials for %s" % str(transport_key))
else:
callback = utils.get_authentication_callback()
username, passwd = callback(transport_key[0], "sftp", None, username)
if cls.debug: dprint("User entered credentials: username=%s, passwd=%s" % (username, passwd))
if username and passwd:
try:
t = get_transport(transport_key)
t.auth_password(username=username, password=passwd)
if cls.debug: dprint("Authenticated for user %s" % username)
cls.credentials[transport_key] = (username, passwd)
return t
except paramiko.AuthenticationException:
import traceback
error = traceback.format_exc()
dprint(error)
pass
if cls.debug: dprint("Failed password for user %s" % username)
if transport_key in cls.credentials:
del cls.credentials[transport_key]
passwd = ""
def _private_key_auth(cls, transport_key, username):
"""Attempt to authenticate to the given transport using the private keys
available from the user's home directory
"""
callback = utils.get_authentication_callback()
t = get_transport(transport_key)
if not username:
username = getpass.getuser()
if not t.is_authenticated():
agent = paramiko.Agent()
agent_keys = agent.get_keys()
if len(agent_keys) > 0:
for key in agent_keys:
if cls.debug: dprint('Trying ssh-agent key %s' % hexlify(key.get_fingerprint()))
try:
t.auth_publickey(username, key)
if cls.debug: dprint('... success!')
break
except paramiko.SSHException:
if not t.is_active():
t = get_transport(transport_key)
if not t.is_authenticated():
path = os.path.join(os.environ['HOME'], '.ssh', 'id_rsa')
if os.path.exists(path):
if cls.debug: dprint("Trying RSA private key")
try:
key = paramiko.RSAKey.from_private_key_file(path)
except paramiko.PasswordRequiredException:
username, passwd = callback(transport_key[0], "sftp", "RSA key pass phrase", username)
key = paramiko.RSAKey.from_private_key_file(path, passwd)
try:
t.auth_publickey(username, key)
if cls.debug: dprint("RSA private key authorization successful.")
except paramiko.AuthenticationException:
dprint("RSA private key authorization failed.")
if not t.is_active():
t = get_transport(transport_key)
if not t.is_authenticated():
path = os.path.join(os.environ['HOME'], '.ssh', 'id_dsa')
if os.path.exists(path):
if cls.debug: dprint("Trying DSS private key")
try:
key = paramiko.DSSKey.from_private_key_file(path)
except paramiko.PasswordRequiredException:
username, passwd = callback(transport_key[0], "sftp", "DSS key pass phrase", username)
key = paramiko.DSSKey.from_private_key_file(path, password)
try:
t.auth_publickey(username, key)
if cls.debug: dprint("DSS private key authorization successful.")
except paramiko.AuthenticationException:
if cls.debug: dprint("DSS private key authorization failed.")
if not t.is_active():
t = get_transport(transport_key)
return t
