18
18
"""Implementation of Transport over SFTP, using paramiko."""
20
# TODO: Remove the transport-based lock_read and lock_write methods. They'll
21
# then raise TransportNotPossible, which will break remote access to any
22
# formats which rely on OS-level locks. That should be fine as those formats
23
# are pretty old, but these combinations may have to be removed from the test
24
# suite. Those formats all date back to 0.7; so we should be able to remove
25
# these methods when we officially drop support for those formats.
42
from bzrlib.errors import (FileExists,
43
NoSuchFile, PathNotChild,
36
from bzrlib.config import config_dir, ensure_config_dir_exists
37
from bzrlib.errors import (ConnectionError,
39
TransportNotPossible, NoSuchFile, PathNotChild,
47
43
ParamikoNotPresent,
49
45
from bzrlib.osutils import pathjoin, fancy_rename, getcwd
50
from bzrlib.symbol_versioning import (
54
from bzrlib.trace import mutter, warning
46
from bzrlib.trace import mutter, warning, error
55
47
from bzrlib.transport import (
57
48
register_urlparse_netloc_protocol,
54
import bzrlib.urlutils as urlutils
70
63
CMD_HANDLE, CMD_OPEN)
71
64
from paramiko.sftp_attr import SFTPAttributes
72
65
from paramiko.sftp_file import SFTPFile
66
from paramiko.sftp_client import SFTPClient
75
69
register_urlparse_netloc_protocol('sftp')
73
# TODO: This should possibly ignore SIGHUP as well, but bzr currently
74
# doesn't handle it itself.
75
# <https://launchpad.net/products/bzr/+bug/41433/+index>
77
signal.signal(signal.SIGINT, signal.SIG_IGN)
80
def os_specific_subprocess_params():
81
"""Get O/S specific subprocess parameters."""
82
if sys.platform == 'win32':
83
# setting the process group and closing fds is not supported on
87
# We close fds other than the pipes as the child process does not need
90
# We also set the child process to ignore SIGINT. Normally the signal
91
# would be sent to every process in the foreground process group, but
92
# this causes it to be seen only by bzr and not by ssh. Python will
93
# generate a KeyboardInterrupt in bzr, and we will then have a chance
94
# to release locks or do other cleanup over ssh before the connection
96
# <https://launchpad.net/products/bzr/+bug/5987>
98
# Running it in a separate process group is not good because then it
99
# can't get non-echoed input of a password or passphrase.
100
# <https://launchpad.net/products/bzr/+bug/40508>
101
return {'preexec_fn': _ignore_sigint,
78
106
_paramiko_version = getattr(paramiko, '__version_info__', (0, 0, 0))
79
107
# don't use prefetch unless paramiko version >= 1.5.5 (there were bugs earlier)
80
108
_default_do_prefetch = (_paramiko_version >= (1, 5, 5))
83
@deprecated_function(zero_nineteen)
110
# Paramiko 1.5 tries to open a socket.AF_UNIX in order to connect
111
# to ssh-agent. That attribute doesn't exist on win32 (it does in cygwin)
112
# so we get an AttributeError exception. So we will not try to
113
# connect to an agent if we are on win32 and using Paramiko older than 1.6
114
_use_ssh_agent = (sys.platform != 'win32' or _paramiko_version >= (1, 6, 0))
118
def _get_ssh_vendor():
119
"""Find out what version of SSH is on the system."""
121
if _ssh_vendor is not None:
126
if 'BZR_SSH' in os.environ:
127
_ssh_vendor = os.environ['BZR_SSH']
128
if _ssh_vendor == 'paramiko':
133
p = subprocess.Popen(['ssh', '-V'],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE,
136
stderr=subprocess.PIPE,
137
**os_specific_subprocess_params())
138
returncode = p.returncode
139
stdout, stderr = p.communicate()
143
if 'OpenSSH' in stderr:
144
mutter('ssh implementation is OpenSSH')
145
_ssh_vendor = 'openssh'
146
elif 'SSH Secure Shell' in stderr:
147
mutter('ssh implementation is SSH Corp.')
150
if _ssh_vendor != 'none':
153
# XXX: 20051123 jamesh
154
# A check for putty's plink or lsh would go here.
156
mutter('falling back to paramiko implementation')
160
class SFTPSubprocess:
161
"""A socket-like object that talks to an ssh subprocess via pipes."""
162
def __init__(self, hostname, vendor, port=None, user=None):
163
assert vendor in ['openssh', 'ssh']
164
if vendor == 'openssh':
166
'-oForwardX11=no', '-oForwardAgent=no',
167
'-oClearAllForwardings=yes', '-oProtocol=2',
168
'-oNoHostAuthenticationForLocalhost=yes']
170
args.extend(['-p', str(port)])
172
args.extend(['-l', user])
173
args.extend(['-s', hostname, 'sftp'])
174
elif vendor == 'ssh':
177
args.extend(['-p', str(port)])
179
args.extend(['-l', user])
180
args.extend(['-s', 'sftp', hostname])
182
self.proc = subprocess.Popen(args,
183
stdin=subprocess.PIPE,
184
stdout=subprocess.PIPE,
185
**os_specific_subprocess_params())
187
def send(self, data):
188
return os.write(self.proc.stdin.fileno(), data)
190
def recv_ready(self):
191
# TODO: jam 20051215 this function is necessary to support the
192
# pipelined() function. In reality, it probably should use
193
# poll() or select() to actually return if there is data
194
# available, otherwise we probably don't get any benefit
197
def recv(self, count):
198
return os.read(self.proc.stdout.fileno(), count)
201
self.proc.stdin.close()
202
self.proc.stdout.close()
206
class LoopbackSFTP(object):
207
"""Simple wrapper for a socket that pretends to be a paramiko Channel."""
209
def __init__(self, sock):
212
def send(self, data):
213
return self.__socket.send(data)
216
return self.__socket.recv(n)
218
def recv_ready(self):
222
self.__socket.close()
228
# This is a weakref dictionary, so that we can reuse connections
229
# that are still active. Long term, it might be nice to have some
230
# sort of expiration policy, such as disconnect if inactive for
231
# X seconds. But that requires a lot more fanciness.
232
_connected_hosts = weakref.WeakValueDictionary()
84
234
def clear_connection_cache():
85
235
"""Remove all hosts from the SFTP connection cache.
87
237
Primarily useful for test cases wanting to force garbage collection.
88
We don't have a global connection cache anymore.
239
_connected_hosts.clear()
242
def load_host_keys():
244
Load system host keys (probably doesn't work on windows) and any
245
"discovered" keys from previous sessions.
247
global SYSTEM_HOSTKEYS, BZR_HOSTKEYS
249
SYSTEM_HOSTKEYS = paramiko.util.load_host_keys(os.path.expanduser('~/.ssh/known_hosts'))
251
mutter('failed to load system host keys: ' + str(e))
252
bzr_hostkey_path = pathjoin(config_dir(), 'ssh_host_keys')
254
BZR_HOSTKEYS = paramiko.util.load_host_keys(bzr_hostkey_path)
256
mutter('failed to load bzr host keys: ' + str(e))
260
def save_host_keys():
262
Save "discovered" host keys in $(config)/ssh_host_keys/.
264
global SYSTEM_HOSTKEYS, BZR_HOSTKEYS
265
bzr_hostkey_path = pathjoin(config_dir(), 'ssh_host_keys')
266
ensure_config_dir_exists()
269
f = open(bzr_hostkey_path, 'w')
270
f.write('# SSH host keys collected by bzr\n')
271
for hostname, keys in BZR_HOSTKEYS.iteritems():
272
for keytype, key in keys.iteritems():
273
f.write('%s %s %s\n' % (hostname, keytype, key.get_base64()))
276
mutter('failed to save bzr host keys: ' + str(e))
91
279
class SFTPLock(object):
92
"""This fakes a lock in a remote location.
94
A present lock is indicated just by the existence of a file. This
95
doesn't work well on all transports and they are only used in
96
deprecated storage formats.
280
"""This fakes a lock in a remote location."""
99
281
__slots__ = ['path', 'lock_path', 'lock_file', 'transport']
101
282
def __init__(self, path, transport):
102
283
assert isinstance(transport, SFTPTransport)
151
332
# up the request itself, rather than us having to worry about it
152
333
_max_request_size = 32768
154
def __init__(self, base, _from_transport=None):
335
def __init__(self, base, clone_from=None):
155
336
assert base.startswith('sftp://')
156
super(SFTPTransport, self).__init__(base,
157
_from_transport=_from_transport)
337
self._parse_url(base)
338
base = self._unparse_url()
341
super(SFTPTransport, self).__init__(base)
342
if clone_from is None:
345
# use the same ssh connection, etc
346
self._sftp = clone_from._sftp
347
# super saves 'self.base'
349
def should_cache(self):
351
Return True if the data pulled across should be cached locally.
355
def clone(self, offset=None):
357
Return a new SFTPTransport with root at self.base + offset.
358
We share the same SFTP session between such transports, because it's
359
fairly expensive to set them up.
362
return SFTPTransport(self.base, self)
364
return SFTPTransport(self.abspath(offset), self)
366
def abspath(self, relpath):
368
Return the full url to the given relative path.
370
@param relpath: the relative path or path components
371
@type relpath: str or list
373
return self._unparse_url(self._remote_path(relpath))
159
375
def _remote_path(self, relpath):
160
376
"""Return the path to be passed along the sftp protocol for relpath.
162
:param relpath: is a urlencoded string.
164
relative = urlutils.unescape(relpath).encode('utf-8')
165
remote_path = self._combine_paths(self._path, relative)
166
# the initial slash should be removed from the path, and treated as a
167
# homedir relative path (the path begins with a double slash if it is
168
# absolute). see draft-ietf-secsh-scp-sftp-ssh-uri-03.txt
169
# RBC 20060118 we are not using this as its too user hostile. instead
170
# we are following lftp and using /~/foo to mean '~/foo'
171
# vila--20070602 and leave absolute paths begin with a single slash.
172
if remote_path.startswith('/~/'):
173
remote_path = remote_path[3:]
174
elif remote_path == '/~':
178
def _create_connection(self, credentials=None):
179
"""Create a new connection with the provided credentials.
181
:param credentials: The credentials needed to establish the connection.
183
:return: The created connection and its associated credentials.
185
The credentials are only the password as it may have been entered
186
interactively by the user and may be different from the one provided
187
in base url at transport creation time.
189
if credentials is None:
190
password = self._password
192
password = credentials
194
vendor = ssh._get_ssh_vendor()
195
connection = vendor.connect_sftp(self._user, password,
196
self._host, self._port)
197
return connection, password
200
"""Ensures that a connection is established"""
201
connection = self._get_connection()
202
if connection is None:
203
# First connection ever
204
connection, credentials = self._create_connection()
205
self._set_connection(connection, credentials)
209
def should_cache(self):
211
Return True if the data pulled across should be cached locally.
378
relpath is a urlencoded string.
380
# FIXME: share the common code across transports
381
assert isinstance(relpath, basestring)
382
relpath = urlutils.unescape(relpath).split('/')
383
basepath = self._path.split('/')
384
if len(basepath) > 0 and basepath[-1] == '':
385
basepath = basepath[:-1]
389
if len(basepath) == 0:
390
# In most filesystems, a request for the parent
391
# of root, just returns root.
399
path = '/'.join(basepath)
400
# mutter('relpath => remotepath %s => %s', relpath, path)
403
def relpath(self, abspath):
404
username, password, host, port, path = self._split_url(abspath)
406
if (username != self._username):
407
error.append('username mismatch')
408
if (host != self._host):
409
error.append('host mismatch')
410
if (port != self._port):
411
error.append('port mismatch')
412
if (not path.startswith(self._path)):
413
error.append('path mismatch')
415
extra = ': ' + ', '.join(error)
416
raise PathNotChild(abspath, self.base, extra=extra)
418
return path[pl:].strip('/')
215
420
def has(self, relpath):
217
422
Does the target location exist?
220
self._get_sftp().stat(self._remote_path(relpath))
425
self._sftp.stat(self._remote_path(relpath))
415
self._get_sftp().remove(tmp_abspath)
600
self._sftp.remove(tmp_abspath)
417
602
# raise the saved except
419
604
# raise the original with its traceback if we can.
422
def _put_non_atomic_helper(self, relpath, writer, mode=None,
423
create_parent_dir=False,
425
abspath = self._remote_path(relpath)
427
# TODO: jam 20060816 paramiko doesn't publicly expose a way to
428
# set the file mode at create time. If it does, use it.
429
# But for now, we just chmod later anyway.
431
def _open_and_write_file():
432
"""Try to open the target file, raise error on failure"""
436
fout = self._get_sftp().file(abspath, mode='wb')
437
fout.set_pipelined(True)
439
except (paramiko.SSHException, IOError), e:
440
self._translate_io_exception(e, abspath,
443
# This is designed to chmod() right before we close.
444
# Because we set_pipelined() earlier, theoretically we might
445
# avoid the round trip for fout.close()
447
self._get_sftp().chmod(abspath, mode)
452
if not create_parent_dir:
453
_open_and_write_file()
456
# Try error handling to create the parent directory if we need to
458
_open_and_write_file()
460
# Try to create the parent directory, and then go back to
462
parent_dir = os.path.dirname(abspath)
463
self._mkdir(parent_dir, dir_mode)
464
_open_and_write_file()
466
def put_file_non_atomic(self, relpath, f, mode=None,
467
create_parent_dir=False,
469
"""Copy the file-like object into the target location.
471
This function is not strictly safe to use. It is only meant to
472
be used when you already know that the target does not exist.
473
It is not safe, because it will open and truncate the remote
474
file. So there may be a time when the file has invalid contents.
476
:param relpath: The remote location to put the contents.
477
:param f: File-like object.
478
:param mode: Possible access permissions for new file.
479
None means do not set remote permissions.
480
:param create_parent_dir: If we cannot create the target file because
481
the parent directory does not exist, go ahead and
482
create it, and then try again.
486
self._put_non_atomic_helper(relpath, writer, mode=mode,
487
create_parent_dir=create_parent_dir,
490
def put_bytes_non_atomic(self, relpath, bytes, mode=None,
491
create_parent_dir=False,
495
self._put_non_atomic_helper(relpath, writer, mode=mode,
496
create_parent_dir=create_parent_dir,
499
607
def iter_files_recursive(self):
500
608
"""Walk the relative paths of all files in this transport."""
501
609
queue = list(self.list_dir('.'))
503
relpath = queue.pop(0)
611
relpath = urllib.quote(queue.pop(0))
504
612
st = self.stat(relpath)
505
613
if stat.S_ISDIR(st.st_mode):
506
614
for i, basename in enumerate(self.list_dir(relpath)):
511
def _mkdir(self, abspath, mode=None):
517
self._get_sftp().mkdir(abspath, local_mode)
519
self._get_sftp().chmod(abspath, mode=mode)
520
except (paramiko.SSHException, IOError), e:
521
self._translate_io_exception(e, abspath, ': unable to mkdir',
522
failure_exc=FileExists)
524
619
def mkdir(self, relpath, mode=None):
525
620
"""Create a directory at the given path."""
526
self._mkdir(self._remote_path(relpath), mode=mode)
621
path = self._remote_path(relpath)
623
# In the paramiko documentation, it says that passing a mode flag
624
# will filtered against the server umask.
625
# StubSFTPServer does not do this, which would be nice, because it is
626
# what we really want :)
627
# However, real servers do use umask, so we really should do it that way
628
self._sftp.mkdir(path)
630
self._sftp.chmod(path, mode=mode)
631
except (paramiko.SSHException, IOError), e:
632
self._translate_io_exception(e, path, ': unable to mkdir',
633
failure_exc=FileExists)
528
def _translate_io_exception(self, e, path, more_info='',
635
def _translate_io_exception(self, e, path, more_info='',
529
636
failure_exc=PathError):
530
637
"""Translate a paramiko or IOError into a friendlier exception.
674
770
# that we have taken the lock.
675
771
return SFTPLock(relpath, self)
773
def _unparse_url(self, path=None):
776
path = urllib.quote(path)
777
# handle homedir paths
778
if not path.startswith('/'):
780
netloc = urllib.quote(self._host)
781
if self._username is not None:
782
netloc = '%s@%s' % (urllib.quote(self._username), netloc)
783
if self._port is not None:
784
netloc = '%s:%d' % (netloc, self._port)
785
return urlparse.urlunparse(('sftp', netloc, path, '', '', ''))
787
def _split_url(self, url):
788
(scheme, username, password, host, port, path) = split_url(url)
789
assert scheme == 'sftp'
791
# the initial slash should be removed from the path, and treated
792
# as a homedir relative path (the path begins with a double slash
793
# if it is absolute).
794
# see draft-ietf-secsh-scp-sftp-ssh-uri-03.txt
795
# RBC 20060118 we are not using this as its too user hostile. instead
796
# we are following lftp and using /~/foo to mean '~/foo'.
797
# handle homedir paths
798
if path.startswith('/~/'):
802
return (username, password, host, port, path)
804
def _parse_url(self, url):
805
(self._username, self._password,
806
self._host, self._port, self._path) = self._split_url(url)
808
def _sftp_connect(self):
809
"""Connect to the remote sftp server.
810
After this, self._sftp should have a valid connection (or
811
we raise an TransportError 'could not connect').
813
TODO: Raise a more reasonable ConnectionFailed exception
815
global _connected_hosts
817
idx = (self._host, self._port, self._username)
819
self._sftp = _connected_hosts[idx]
824
vendor = _get_ssh_vendor()
825
if vendor == 'loopback':
826
sock = socket.socket()
828
sock.connect((self._host, self._port))
829
except socket.error, e:
830
raise ConnectionError('Unable to connect to SSH host %s:%s: %s'
831
% (self._host, self._port, e))
832
self._sftp = SFTPClient(LoopbackSFTP(sock))
833
elif vendor != 'none':
834
sock = SFTPSubprocess(self._host, vendor, self._port,
836
self._sftp = SFTPClient(sock)
838
self._paramiko_connect()
840
_connected_hosts[idx] = self._sftp
842
def _paramiko_connect(self):
843
global SYSTEM_HOSTKEYS, BZR_HOSTKEYS
848
t = paramiko.Transport((self._host, self._port or 22))
849
t.set_log_channel('bzr.paramiko')
851
except paramiko.SSHException, e:
852
raise ConnectionError('Unable to reach SSH host %s:%s: %s'
853
% (self._host, self._port, e))
855
server_key = t.get_remote_server_key()
856
server_key_hex = paramiko.util.hexify(server_key.get_fingerprint())
857
keytype = server_key.get_name()
858
if SYSTEM_HOSTKEYS.has_key(self._host) and SYSTEM_HOSTKEYS[self._host].has_key(keytype):
859
our_server_key = SYSTEM_HOSTKEYS[self._host][keytype]
860
our_server_key_hex = paramiko.util.hexify(our_server_key.get_fingerprint())
861
elif BZR_HOSTKEYS.has_key(self._host) and BZR_HOSTKEYS[self._host].has_key(keytype):
862
our_server_key = BZR_HOSTKEYS[self._host][keytype]
863
our_server_key_hex = paramiko.util.hexify(our_server_key.get_fingerprint())
865
warning('Adding %s host key for %s: %s' % (keytype, self._host, server_key_hex))
866
if not BZR_HOSTKEYS.has_key(self._host):
867
BZR_HOSTKEYS[self._host] = {}
868
BZR_HOSTKEYS[self._host][keytype] = server_key
869
our_server_key = server_key
870
our_server_key_hex = paramiko.util.hexify(our_server_key.get_fingerprint())
872
if server_key != our_server_key:
873
filename1 = os.path.expanduser('~/.ssh/known_hosts')
874
filename2 = pathjoin(config_dir(), 'ssh_host_keys')
875
raise TransportError('Host keys for %s do not match! %s != %s' % \
876
(self._host, our_server_key_hex, server_key_hex),
877
['Try editing %s or %s' % (filename1, filename2)])
882
self._sftp = t.open_sftp_client()
883
except paramiko.SSHException, e:
884
raise ConnectionError('Unable to start sftp client %s:%d' %
885
(self._host, self._port), e)
887
def _sftp_auth(self, transport):
888
# paramiko requires a username, but it might be none if nothing was supplied
889
# use the local username, just in case.
890
# We don't override self._username, because if we aren't using paramiko,
891
# the username might be specified in ~/.ssh/config and we don't want to
892
# force it to something else
893
# Also, it would mess up the self.relpath() functionality
894
username = self._username or getpass.getuser()
897
agent = paramiko.Agent()
898
for key in agent.get_keys():
899
mutter('Trying SSH agent key %s' % paramiko.util.hexify(key.get_fingerprint()))
901
transport.auth_publickey(username, key)
903
except paramiko.SSHException, e:
906
# okay, try finding id_rsa or id_dss? (posix only)
907
if self._try_pkey_auth(transport, paramiko.RSAKey, username, 'id_rsa'):
909
if self._try_pkey_auth(transport, paramiko.DSSKey, username, 'id_dsa'):
914
transport.auth_password(username, self._password)
916
except paramiko.SSHException, e:
919
# FIXME: Don't keep a password held in memory if you can help it
920
#self._password = None
922
# give up and ask for a password
923
password = bzrlib.ui.ui_factory.get_password(
924
prompt='SSH %(user)s@%(host)s password',
925
user=username, host=self._host)
927
transport.auth_password(username, password)
928
except paramiko.SSHException, e:
929
raise ConnectionError('Unable to authenticate to SSH host as %s@%s' %
930
(username, self._host), e)
932
def _try_pkey_auth(self, transport, pkey_class, username, filename):
933
filename = os.path.expanduser('~/.ssh/' + filename)
935
key = pkey_class.from_private_key_file(filename)
936
transport.auth_publickey(username, key)
938
except paramiko.PasswordRequiredException:
939
password = bzrlib.ui.ui_factory.get_password(
940
prompt='SSH %(filename)s password',
943
key = pkey_class.from_private_key_file(filename, password)
944
transport.auth_publickey(username, key)
946
except paramiko.SSHException:
947
mutter('SSH authentication via %s key failed.' % (os.path.basename(filename),))
948
except paramiko.SSHException:
949
mutter('SSH authentication via %s key failed.' % (os.path.basename(filename),))
677
954
def _sftp_open_exclusive(self, abspath, mode=None):
678
955
"""Open a remote path exclusively.
788
class SocketDelay(object):
789
"""A socket decorator to make TCP appear slower.
791
This changes recv, send, and sendall to add a fixed latency to each python
792
call if a new roundtrip is detected. That is, when a recv is called and the
793
flag new_roundtrip is set, latency is charged. Every send and send_all
796
In addition every send, sendall and recv sleeps a bit per character send to
799
Not all methods are implemented, this is deliberate as this class is not a
800
replacement for the builtin sockets layer. fileno is not implemented to
801
prevent the proxy being bypassed.
805
_proxied_arguments = dict.fromkeys([
806
"close", "getpeername", "getsockname", "getsockopt", "gettimeout",
807
"setblocking", "setsockopt", "settimeout", "shutdown"])
809
def __init__(self, sock, latency, bandwidth=1.0,
812
:param bandwith: simulated bandwith (MegaBit)
813
:param really_sleep: If set to false, the SocketDelay will just
814
increase a counter, instead of calling time.sleep. This is useful for
815
unittesting the SocketDelay.
818
self.latency = latency
819
self.really_sleep = really_sleep
820
self.time_per_byte = 1 / (bandwidth / 8.0 * 1024 * 1024)
821
self.new_roundtrip = False
824
if self.really_sleep:
827
SocketDelay.simulated_time += s
829
def __getattr__(self, attr):
830
if attr in SocketDelay._proxied_arguments:
831
return getattr(self.sock, attr)
832
raise AttributeError("'SocketDelay' object has no attribute %r" %
836
return SocketDelay(self.sock.dup(), self.latency, self.time_per_byte,
839
def recv(self, *args):
840
data = self.sock.recv(*args)
841
if data and self.new_roundtrip:
842
self.new_roundtrip = False
843
self.sleep(self.latency)
844
self.sleep(len(data) * self.time_per_byte)
847
def sendall(self, data, flags=0):
848
if not self.new_roundtrip:
849
self.new_roundtrip = True
850
self.sleep(self.latency)
851
self.sleep(len(data) * self.time_per_byte)
852
return self.sock.sendall(data, flags)
854
def send(self, data, flags=0):
855
if not self.new_roundtrip:
856
self.new_roundtrip = True
857
self.sleep(self.latency)
858
bytes_sent = self.sock.send(data, flags)
859
self.sleep(bytes_sent * self.time_per_byte)
863
1056
class SFTPServer(Server):
864
1057
"""Common code for SFTP server facilities."""
866
def __init__(self, server_interface=StubServer):
867
1060
self._original_vendor = None
868
1061
self._homedir = None
869
1062
self._server_homedir = None
870
1063
self._listener = None
871
1064
self._root = None
872
self._vendor = ssh.ParamikoVendor()
873
self._server_interface = server_interface
1065
self._vendor = 'none'
874
1066
# sftp server logs
878
1069
def _get_sftp_url(self, path):
879
1070
"""Calculate an sftp url to this server for path."""
added
removed
bzrlib/transport/sftp.py
