109
114
stdout = stderr = ''
110
115
return stdout + stderr
112
def _get_vendor_by_version_string(self, version, args):
117
def _get_vendor_by_version_string(self, version):
113
118
"""Return the vendor or None based on output from the subprocess.
115
120
:param version: The output of 'ssh -V' like command.
116
:param args: Command line that was run.
119
123
if 'OpenSSH' in version:
120
trace.mutter('ssh implementation is OpenSSH')
124
mutter('ssh implementation is OpenSSH')
121
125
vendor = OpenSSHSubprocessVendor()
122
126
elif 'SSH Secure Shell' in version:
123
trace.mutter('ssh implementation is SSH Corp.')
127
mutter('ssh implementation is SSH Corp.')
124
128
vendor = SSHCorpSubprocessVendor()
125
elif 'plink' in version and args[0] == 'plink':
126
# Checking if "plink" was the executed argument as Windows
127
# sometimes reports 'ssh -V' incorrectly with 'plink' in it's
128
# version. See https://bugs.launchpad.net/bzr/+bug/107155
129
trace.mutter("ssh implementation is Putty's plink.")
129
elif 'plink' in version:
130
mutter("ssh implementation is Putty's plink.")
130
131
vendor = PLinkSubprocessVendor()
133
134
def _get_vendor_by_inspection(self):
134
135
"""Return the vendor or None by checking for known SSH implementations."""
135
for args in (['ssh', '-V'], ['plink', '-V']):
136
for args in [['ssh', '-V'], ['plink', '-V']]:
136
137
version = self._get_ssh_version_string(args)
137
vendor = self._get_vendor_by_version_string(version, args)
138
vendor = self._get_vendor_by_version_string(version)
138
139
if vendor is not None:
151
152
if vendor is None:
152
153
vendor = self._get_vendor_by_inspection()
153
154
if vendor is None:
154
trace.mutter('falling back to default implementation')
155
mutter('falling back to default implementation')
155
156
vendor = self._default_ssh_vendor
156
157
if vendor is None:
157
raise errors.SSHVendorNotFound()
158
raise SSHVendorNotFound()
158
159
self._cached_ssh_vendor = vendor
159
160
return self._cached_ssh_vendor
224
225
This just unifies all the locations that try to raise ConnectionError,
225
226
so that they format things properly.
227
raise errors.SocketConnectionError(host=host, port=port, msg=msg,
228
orig_error=orig_error)
228
raise SocketConnectionError(host=host, port=port, msg=msg,
229
orig_error=orig_error)
231
232
class LoopbackVendor(SSHVendor):
232
233
"""SSH "vendor" that connects over a plain TCP socket, not SSH."""
234
235
def connect_sftp(self, username, password, host, port):
235
236
sock = socket.socket()
268
269
except (paramiko.SSHException, socket.error), e:
269
270
self._raise_connection_error(host, port=port, orig_error=e)
271
272
server_key = t.get_remote_server_key()
272
273
server_key_hex = paramiko.util.hexify(server_key.get_fingerprint())
273
274
keytype = server_key.get_name()
274
275
if host in SYSTEM_HOSTKEYS and keytype in SYSTEM_HOSTKEYS[host]:
275
276
our_server_key = SYSTEM_HOSTKEYS[host][keytype]
276
our_server_key_hex = paramiko.util.hexify(
277
our_server_key.get_fingerprint())
277
our_server_key_hex = paramiko.util.hexify(our_server_key.get_fingerprint())
278
278
elif host in BZR_HOSTKEYS and keytype in BZR_HOSTKEYS[host]:
279
279
our_server_key = BZR_HOSTKEYS[host][keytype]
280
our_server_key_hex = paramiko.util.hexify(
281
our_server_key.get_fingerprint())
280
our_server_key_hex = paramiko.util.hexify(our_server_key.get_fingerprint())
283
trace.warning('Adding %s host key for %s: %s'
284
% (keytype, host, server_key_hex))
282
warning('Adding %s host key for %s: %s' % (keytype, host, server_key_hex))
285
283
add = getattr(BZR_HOSTKEYS, 'add', None)
286
284
if add is not None: # paramiko >= 1.X.X
287
285
BZR_HOSTKEYS.add(host, keytype, server_key)
289
287
BZR_HOSTKEYS.setdefault(host, {})[keytype] = server_key
290
288
our_server_key = server_key
291
our_server_key_hex = paramiko.util.hexify(
292
our_server_key.get_fingerprint())
289
our_server_key_hex = paramiko.util.hexify(our_server_key.get_fingerprint())
294
291
if server_key != our_server_key:
295
292
filename1 = os.path.expanduser('~/.ssh/known_hosts')
296
filename2 = osutils.pathjoin(config.config_dir(), 'ssh_host_keys')
297
raise errors.TransportError(
298
'Host keys for %s do not match! %s != %s' %
293
filename2 = pathjoin(config_dir(), 'ssh_host_keys')
294
raise TransportError('Host keys for %s do not match! %s != %s' % \
299
295
(host, our_server_key_hex, server_key_hex),
300
296
['Try editing %s or %s' % (filename1, filename2)])
302
_paramiko_auth(username, password, host, port, t)
298
_paramiko_auth(username, password, host, t)
305
301
def connect_sftp(self, username, password, host, port):
306
302
t = self._connect(username, password, host, port)
326
322
register_ssh_vendor('paramiko', vendor)
327
323
register_ssh_vendor('none', vendor)
328
324
register_default_ssh_vendor(vendor)
329
_sftp_connection_errors = (EOFError, paramiko.SSHException)
332
_sftp_connection_errors = (EOFError,)
335
328
class SubprocessVendor(SSHVendor):
336
329
"""Abstract base class for vendors that use pipes to a subprocess."""
338
331
def _connect(self, argv):
339
332
proc = subprocess.Popen(argv,
340
333
stdin=subprocess.PIPE,
348
341
subsystem='sftp')
349
342
sock = self._connect(argv)
350
343
return SFTPClient(sock)
351
except _sftp_connection_errors, e:
344
except (EOFError, paramiko.SSHException), e:
352
345
self._raise_connection_error(host, port=port, orig_error=e)
353
346
except (OSError, IOError), e:
354
347
# If the machine is fast enough, ssh can actually exit
443
436
if subsystem is not None:
444
437
assert command is None, (
445
438
'subsystem and command are mutually exclusive')
446
args = ['plink', '-x', '-a', '-ssh', '-2', '-batch']
439
args = ['plink', '-x', '-a', '-ssh', '-2']
447
440
if port is not None:
448
441
args.extend(['-P', str(port)])
449
442
if username is not None:
457
450
register_ssh_vendor('plink', PLinkSubprocessVendor())
460
def _paramiko_auth(username, password, host, port, paramiko_transport):
453
def _paramiko_auth(username, password, host, paramiko_transport):
461
454
# paramiko requires a username, but it might be none if nothing was supplied
462
455
# use the local username, just in case.
463
456
# We don't override username, because if we aren't using paramiko,
464
457
# the username might be specified in ~/.ssh/config and we don't want to
465
458
# force it to something else
466
459
# Also, it would mess up the self.relpath() functionality
467
auth = config.AuthenticationConfig()
469
username = auth.get_user('ssh', host, port=port)
471
# Default to local user
472
username = getpass.getuser()
460
username = username or getpass.getuser()
474
462
if _use_ssh_agent:
475
463
agent = paramiko.Agent()
476
464
for key in agent.get_keys():
477
trace.mutter('Trying SSH agent key %s'
478
% paramiko.util.hexify(key.get_fingerprint()))
465
mutter('Trying SSH agent key %s' % paramiko.util.hexify(key.get_fingerprint()))
480
467
paramiko_transport.auth_publickey(username, key)
482
469
except paramiko.SSHException, e:
485
472
# okay, try finding id_rsa or id_dss? (posix only)
486
473
if _try_pkey_auth(paramiko_transport, paramiko.RSAKey, username, 'id_rsa'):
498
485
# give up and ask for a password
499
password = auth.get_password('ssh', host, username, port=port)
486
password = bzrlib.ui.ui_factory.get_password(
487
prompt='SSH %(user)s@%(host)s password',
488
user=username, host=host)
501
490
paramiko_transport.auth_password(username, password)
502
491
except paramiko.SSHException, e:
503
raise errors.ConnectionError(
504
'Unable to authenticate to SSH host as %s@%s' % (username, host), e)
492
raise ConnectionError('Unable to authenticate to SSH host as %s@%s' %
507
496
def _try_pkey_auth(paramiko_transport, pkey_class, username, filename):
511
500
paramiko_transport.auth_publickey(username, key)
513
502
except paramiko.PasswordRequiredException:
514
password = ui.ui_factory.get_password(
515
prompt='SSH %(filename)s password', filename=filename)
503
password = bzrlib.ui.ui_factory.get_password(
504
prompt='SSH %(filename)s password',
517
507
key = pkey_class.from_private_key_file(filename, password)
518
508
paramiko_transport.auth_publickey(username, key)
520
510
except paramiko.SSHException:
521
trace.mutter('SSH authentication via %s key failed.'
522
% (os.path.basename(filename),))
511
mutter('SSH authentication via %s key failed.' % (os.path.basename(filename),))
523
512
except paramiko.SSHException:
524
trace.mutter('SSH authentication via %s key failed.'
525
% (os.path.basename(filename),))
513
mutter('SSH authentication via %s key failed.' % (os.path.basename(filename),))
536
524
global SYSTEM_HOSTKEYS, BZR_HOSTKEYS
538
SYSTEM_HOSTKEYS = paramiko.util.load_host_keys(
539
os.path.expanduser('~/.ssh/known_hosts'))
541
trace.mutter('failed to load system host keys: ' + str(e))
542
bzr_hostkey_path = osutils.pathjoin(config.config_dir(), 'ssh_host_keys')
526
SYSTEM_HOSTKEYS = paramiko.util.load_host_keys(os.path.expanduser('~/.ssh/known_hosts'))
528
mutter('failed to load system host keys: ' + str(e))
529
bzr_hostkey_path = pathjoin(config_dir(), 'ssh_host_keys')
544
531
BZR_HOSTKEYS = paramiko.util.load_host_keys(bzr_hostkey_path)
546
trace.mutter('failed to load bzr host keys: ' + str(e))
533
mutter('failed to load bzr host keys: ' + str(e))
552
539
Save "discovered" host keys in $(config)/ssh_host_keys/.
554
541
global SYSTEM_HOSTKEYS, BZR_HOSTKEYS
555
bzr_hostkey_path = osutils.pathjoin(config.config_dir(), 'ssh_host_keys')
556
config.ensure_config_dir_exists()
542
bzr_hostkey_path = pathjoin(config_dir(), 'ssh_host_keys')
543
ensure_config_dir_exists()
559
546
f = open(bzr_hostkey_path, 'w')