This file is indexed.

/usr/share/pyshared/paramiko/sftp.py is in python-paramiko 1.7.7.1-3.1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
# Copyright (C) 2003-2007  Robey Pointer <robeypointer@gmail.com>
#
# 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 select
import socket
import struct

from paramiko.common import *
from paramiko import util
from paramiko.channel import Channel
from paramiko.message import Message


CMD_INIT, CMD_VERSION, CMD_OPEN, CMD_CLOSE, CMD_READ, CMD_WRITE, CMD_LSTAT, CMD_FSTAT, \
           CMD_SETSTAT, CMD_FSETSTAT, CMD_OPENDIR, CMD_READDIR, CMD_REMOVE, CMD_MKDIR, \
           CMD_RMDIR, CMD_REALPATH, CMD_STAT, CMD_RENAME, CMD_READLINK, CMD_SYMLINK \
           = range(1, 21)
CMD_STATUS, CMD_HANDLE, CMD_DATA, CMD_NAME, CMD_ATTRS = range(101, 106)
CMD_EXTENDED, CMD_EXTENDED_REPLY = range(200, 202)

SFTP_OK = 0
SFTP_EOF, SFTP_NO_SUCH_FILE, SFTP_PERMISSION_DENIED, SFTP_FAILURE, SFTP_BAD_MESSAGE, \
         SFTP_NO_CONNECTION, SFTP_CONNECTION_LOST, SFTP_OP_UNSUPPORTED = range(1, 9)

SFTP_DESC = [ 'Success',
              'End of file',
              'No such file',
              'Permission denied',
              'Failure',
              'Bad message',
              'No connection',
              'Connection lost',
              'Operation unsupported' ]

SFTP_FLAG_READ = 0x1
SFTP_FLAG_WRITE = 0x2
SFTP_FLAG_APPEND = 0x4
SFTP_FLAG_CREATE = 0x8
SFTP_FLAG_TRUNC = 0x10
SFTP_FLAG_EXCL = 0x20

_VERSION = 3


# for debugging
CMD_NAMES = {
    CMD_INIT: 'init',
    CMD_VERSION: 'version',
    CMD_OPEN: 'open',
    CMD_CLOSE: 'close',
    CMD_READ: 'read',
    CMD_WRITE: 'write',
    CMD_LSTAT: 'lstat',
    CMD_FSTAT: 'fstat',
    CMD_SETSTAT: 'setstat',
    CMD_FSETSTAT: 'fsetstat',
    CMD_OPENDIR: 'opendir',
    CMD_READDIR: 'readdir',
    CMD_REMOVE: 'remove',
    CMD_MKDIR: 'mkdir',
    CMD_RMDIR: 'rmdir',
    CMD_REALPATH: 'realpath',
    CMD_STAT: 'stat',
    CMD_RENAME: 'rename',
    CMD_READLINK: 'readlink',
    CMD_SYMLINK: 'symlink',
    CMD_STATUS: 'status',
    CMD_HANDLE: 'handle',
    CMD_DATA: 'data',
    CMD_NAME: 'name',
    CMD_ATTRS: 'attrs',
    CMD_EXTENDED: 'extended',
    CMD_EXTENDED_REPLY: 'extended_reply'
    }


class SFTPError (Exception):
    pass


class BaseSFTP (object):
    def __init__(self):
        self.logger = util.get_logger('paramiko.sftp')
        self.sock = None
        self.ultra_debug = False


    ###  internals...


    def _send_version(self):
        self._send_packet(CMD_INIT, struct.pack('>I', _VERSION))
        t, data = self._read_packet()
        if t != CMD_VERSION:
            raise SFTPError('Incompatible sftp protocol')
        version = struct.unpack('>I', data[:4])[0]
        #        if version != _VERSION:
        #            raise SFTPError('Incompatible sftp protocol')
        return version

    def _send_server_version(self):
        # winscp will freak out if the server sends version info before the
        # client finishes sending INIT.
        t, data = self._read_packet()
        if t != CMD_INIT:
            raise SFTPError('Incompatible sftp protocol')
        version = struct.unpack('>I', data[:4])[0]
        # advertise that we support "check-file"
        extension_pairs = [ 'check-file', 'md5,sha1' ]
        msg = Message()
        msg.add_int(_VERSION)
        msg.add(*extension_pairs)
        self._send_packet(CMD_VERSION, str(msg))
        return version
        
    def _log(self, level, msg, *args):
        self.logger.log(level, msg, *args)

    def _write_all(self, out):
        while len(out) > 0:
            n = self.sock.send(out)
            if n <= 0:
                raise EOFError()
            if n == len(out):
                return
            out = out[n:]
        return

    def _read_all(self, n):
        out = ''
        while n > 0:
            if isinstance(self.sock, socket.socket):
                # sometimes sftp is used directly over a socket instead of
                # through a paramiko channel.  in this case, check periodically
                # if the socket is closed.  (for some reason, recv() won't ever
                # return or raise an exception, but calling select on a closed
                # socket will.)
                while True:
                    read, write, err = select.select([ self.sock ], [], [], 0.1)
                    if len(read) > 0:
                        x = self.sock.recv(n)
                        break
            else:
                x = self.sock.recv(n)
                
            if len(x) == 0:
                raise EOFError()
            out += x
            n -= len(x)
        return out

    def _send_packet(self, t, packet):
        #self._log(DEBUG2, 'write: %s (len=%d)' % (CMD_NAMES.get(t, '0x%02x' % t), len(packet)))
        out = struct.pack('>I', len(packet) + 1) + chr(t) + packet
        if self.ultra_debug:
            self._log(DEBUG, util.format_binary(out, 'OUT: '))
        self._write_all(out)

    def _read_packet(self):
        x = self._read_all(4)
        # most sftp servers won't accept packets larger than about 32k, so
        # anything with the high byte set (> 16MB) is just garbage.
        if x[0] != '\x00':
            raise SFTPError('Garbage packet received')
        size = struct.unpack('>I', x)[0]
        data = self._read_all(size)
        if self.ultra_debug:
            self._log(DEBUG, util.format_binary(data, 'IN: '));
        if size > 0:
            t = ord(data[0])
            #self._log(DEBUG2, 'read: %s (len=%d)' % (CMD_NAMES.get(t), '0x%02x' % t, len(data)-1))
            return t, data[1:]
        return 0, ''