208 lines
7.3 KiB
Python
208 lines
7.3 KiB
Python
#!/usr/bin/python
|
|
|
|
# Copyright (C) 2003-2004 Robey Pointer <robey@lag.net>
|
|
#
|
|
# 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 distrubuted 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.
|
|
|
|
import stat, time
|
|
from common import *
|
|
from sftp import *
|
|
|
|
|
|
class SFTPAttributes (object):
|
|
"""
|
|
Representation of the attributes of a file (or proxied file) for SFTP in
|
|
client or server mode. It attemps to mirror the object returned by
|
|
C{os.stat} as closely as possible, so it may have the following fields,
|
|
with the same meanings as those returned by an C{os.stat} object:
|
|
- st_size
|
|
- st_uid
|
|
- st_gid
|
|
- st_mode
|
|
- st_atime
|
|
- st_mtime
|
|
|
|
Because SFTP allows flags to have other arbitrary named attributes, these
|
|
are stored in a dict named C{attr}. Occasionally, the filename is also
|
|
stored, in C{filename}.
|
|
"""
|
|
|
|
FLAG_SIZE = 1
|
|
FLAG_UIDGID = 2
|
|
FLAG_PERMISSIONS = 4
|
|
FLAG_AMTIME = 8
|
|
FLAG_EXTENDED = 0x80000000L
|
|
|
|
def __init__(self):
|
|
"""
|
|
Create a new (empty) SFTPAttributes object. All fields will be empty.
|
|
"""
|
|
self._flags = 0
|
|
self.attr = {}
|
|
|
|
def from_stat(cls, obj, filename=None):
|
|
"""
|
|
Create an SFTPAttributes object from an existing C{stat} object (an
|
|
object returned by C{os.stat}).
|
|
|
|
@param obj: an object returned by C{os.stat} (or equivalent).
|
|
@type obj: object
|
|
@param filename: the filename associated with this file.
|
|
@type filename: str
|
|
@return: new L{SFTPAttributes} object with the same attribute fields.
|
|
@rtype: L{SFTPAttributes}
|
|
"""
|
|
attr = cls()
|
|
attr.st_size = obj.st_size
|
|
attr.st_uid = obj.st_uid
|
|
attr.st_gid = obj.st_gid
|
|
attr.st_mode = obj.st_mode
|
|
attr.st_atime = obj.st_atime
|
|
attr.st_mtime = obj.st_mtime
|
|
if filename is not None:
|
|
attr.filename = filename
|
|
return attr
|
|
from_stat = classmethod(from_stat)
|
|
|
|
def __repr__(self):
|
|
return '<SFTPAttributes: %s>' % self._debug_str()
|
|
|
|
|
|
### internals...
|
|
|
|
|
|
def _from_msg(cls, msg, filename=None):
|
|
attr = cls()
|
|
attr._unpack(msg)
|
|
if filename is not None:
|
|
attr.filename = filename
|
|
return attr
|
|
_from_msg = classmethod(_from_msg)
|
|
|
|
def _unpack(self, msg):
|
|
self._flags = msg.get_int()
|
|
if self._flags & self.FLAG_SIZE:
|
|
self.st_size = msg.get_int64()
|
|
if self._flags & self.FLAG_UIDGID:
|
|
self.st_uid = msg.get_int()
|
|
self.st_gid = msg.get_int()
|
|
if self._flags & self.FLAG_PERMISSIONS:
|
|
self.st_mode = msg.get_int()
|
|
if self._flags & self.FLAG_AMTIME:
|
|
self.st_atime = msg.get_int()
|
|
self.st_mtime = msg.get_int()
|
|
if self._flags & self.FLAG_EXTENDED:
|
|
count = msg.get_int()
|
|
for i in range(count):
|
|
self.attr[msg.get_string()] = msg.get_string()
|
|
return msg.get_remainder()
|
|
|
|
def _pack(self, msg):
|
|
self._flags = 0
|
|
if hasattr(self, 'st_size'):
|
|
self._flags |= self.FLAG_SIZE
|
|
if hasattr(self, 'st_uid') or hasattr(self, 'st_gid'):
|
|
self._flags |= self.FLAG_UIDGID
|
|
if hasattr(self, 'st_mode'):
|
|
self._flags |= self.FLAG_PERMISSIONS
|
|
if hasattr(self, 'st_atime') or hasattr(self, 'st_mtime'):
|
|
self._flags |= self.FLAG_AMTIME
|
|
if len(self.attr) > 0:
|
|
self._flags |= self.FLAG_EXTENDED
|
|
msg.add_int(self._flags)
|
|
if self._flags & self.FLAG_SIZE:
|
|
msg.add_int64(self.st_size)
|
|
if self._flags & self.FLAG_UIDGID:
|
|
msg.add_int(getattr(self, 'st_uid', 0))
|
|
msg.add_int(getattr(self, 'st_gid', 0))
|
|
if self._flags & self.FLAG_PERMISSIONS:
|
|
msg.add_int(self.st_mode)
|
|
if self._flags & self.FLAG_AMTIME:
|
|
msg.add_int(getattr(self, 'st_atime', 0))
|
|
msg.add_int(getattr(self, 'st_mtime', 0))
|
|
if self._flags & self.FLAG_EXTENDED:
|
|
msg.add_int(len(self.attr))
|
|
for key, val in self.attr.iteritems():
|
|
msg.add_string(key)
|
|
msg.add_string(val)
|
|
return
|
|
|
|
def _debug_str(self):
|
|
out = '[ '
|
|
if hasattr(self, 'st_size'):
|
|
out += 'size=%d ' % self.st_size
|
|
if hasattr(self, 'st_uid') or hasattr(self, 'st_gid'):
|
|
out += 'uid=%d gid=%d ' % (getattr(self, 'st_uid', 0), getattr(self, 'st_gid', 0))
|
|
if hasattr(self, 'st_mode'):
|
|
out += 'mode=' + oct(self.st_mode)
|
|
if hasattr(self, 'st_atime') or hasattr(self, 'st_mtime'):
|
|
out += 'atime=%d mtime=%d ' % (getattr(self, 'st_atime', 0),
|
|
getattr(self, 'st_mtime', 0))
|
|
for k, v in self.attr.iteritems():
|
|
out += '"%s"=%s ' % (str(k), repr(v))
|
|
out += ']'
|
|
return out
|
|
|
|
def _rwx(n, suid, sticky=False):
|
|
if suid:
|
|
suid = 2
|
|
out = '-r'[n >> 2] + '-w'[(n >> 1) & 1]
|
|
if sticky:
|
|
out += '-xTt'[suid + (n & 1)]
|
|
else:
|
|
out += '-xSs'[suid + (n & 1)]
|
|
return out
|
|
_rwx = staticmethod(_rwx)
|
|
|
|
def __str__(self):
|
|
"create a unix-style long description of the file (like ls -l)"
|
|
if hasattr(self, 'permissions'):
|
|
kind = self.permissions & stat.S_IFMT
|
|
if kind == stat.S_IFIFO:
|
|
ks = 'p'
|
|
elif kind == stat.S_IFCHR:
|
|
ks = 'c'
|
|
elif kind == stat.S_IFDIR:
|
|
ks = 'd'
|
|
elif kind == stat.S_IFBLK:
|
|
ks = 'b'
|
|
elif kind == stat.S_IFREG:
|
|
ks = '-'
|
|
elif kind == stat.S_IFLNK:
|
|
ks = 'l'
|
|
elif kind == stat.S_IFSOCK:
|
|
ks = 's'
|
|
else:
|
|
ks = '?'
|
|
ks += _rwx((self.permissions & 0700) >> 6, self.permissions & stat.S_ISUID)
|
|
ks += _rwx((self.permissions & 070) >> 3, self.permissions & stat.S_ISGID)
|
|
ks += _rwx(self.permissions & 7, self.permissions & stat.S_ISVTX, True)
|
|
else:
|
|
ks = '?---------'
|
|
uid = getattr(self, 'uid', -1)
|
|
gid = getattr(self, 'gid', -1)
|
|
size = getattr(self, 'size', -1)
|
|
mtime = getattr(self, 'mtime', 0)
|
|
# compute display date
|
|
if abs(time.time() - mtime) > 15552000:
|
|
# (15552000 = 6 months)
|
|
datestr = time.strftime('%d %b %Y', time.localtime(mtime))
|
|
else:
|
|
datestr = time.strftime('%d %b %H:%M', time.localtime(mtime))
|
|
filename = getattr(self, 'filename', '?')
|
|
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, size, datestr, filename)
|