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„ Í2ÏÀÖ ?÷ ]# Copyright (C) 2003-2007 Robey Pointer
#
# This file is part of paramiko.
#
# Paramiko 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.
#
# Paramiko 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 Paramiko; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
"""
Server-mode SFTP support.
"""
import os
import errno
import sys
from hashlib import md5, sha1
from paramiko import util
from paramiko.sftp import BaseSFTP, Message, SFTP_FAILURE, \
SFTP_PERMISSION_DENIED, SFTP_NO_SUCH_FILE
from paramiko.sftp_si import SFTPServerInterface
from paramiko.sftp_attr import SFTPAttributes
from paramiko.common import DEBUG
from paramiko.py3compat import long, string_types, bytes_types, b
from paramiko.server import SubsystemHandler
# known hash algorithms for the "check-file" extension
from paramiko.sftp import CMD_HANDLE, SFTP_DESC, CMD_STATUS, SFTP_EOF, CMD_NAME, \
SFTP_BAD_MESSAGE, CMD_EXTENDED_REPLY, SFTP_FLAG_READ, SFTP_FLAG_WRITE, \
SFTP_FLAG_APPEND, SFTP_FLAG_CREATE, SFTP_FLAG_TRUNC, SFTP_FLAG_EXCL, \
CMD_NAMES, CMD_OPEN, CMD_CLOSE, SFTP_OK, CMD_READ, CMD_DATA, CMD_WRITE, \
CMD_REMOVE, CMD_RENAME, CMD_MKDIR, CMD_RMDIR, CMD_OPENDIR, CMD_READDIR, \
CMD_STAT, CMD_ATTRS, CMD_LSTAT, CMD_FSTAT, CMD_SETSTAT, CMD_FSETSTAT, \
CMD_READLINK, CMD_SYMLINK, CMD_REALPATH, CMD_EXTENDED, SFTP_OP_UNSUPPORTED
_hash_class = {
'sha1': sha1,
'md5': md5,
}
class SFTPServer (BaseSFTP, SubsystemHandler):
"""
Server-side SFTP subsystem support. Since this is a `.SubsystemHandler`,
it can be (and is meant to be) set as the handler for ``"sftp"`` requests.
Use `.Transport.set_subsystem_handler` to activate this class.
"""
def __init__(self, channel, name, server, sftp_si=SFTPServerInterface, *largs, **kwargs):
"""
The constructor for SFTPServer is meant to be called from within the
`.Transport` as a subsystem handler. ``server`` and any additional
parameters or keyword parameters are passed from the original call to
`.Transport.set_subsystem_handler`.
:param .Channel channel: channel passed from the `.Transport`.
:param str name: name of the requested subsystem.
:param .ServerInterface server:
the server object associated with this channel and subsystem
:param class sftp_si:
a subclass of `.SFTPServerInterface` to use for handling individual
requests.
"""
BaseSFTP.__init__(self)
SubsystemHandler.__init__(self, channel, name, server)
transport = channel.get_transport()
self.logger = util.get_logger(transport.get_log_c