887
# ------------- server test implementation --------------
890
from bzrlib.tests.stub_sftp import StubServer, StubSFTPServer
892
STUB_SERVER_KEY = """
893
-----BEGIN RSA PRIVATE KEY-----
894
MIICWgIBAAKBgQDTj1bqB4WmayWNPB+8jVSYpZYk80Ujvj680pOTh2bORBjbIAyz
895
oWGW+GUjzKxTiiPvVmxFgx5wdsFvF03v34lEVVhMpouqPAYQ15N37K/ir5XY+9m/
896
d8ufMCkjeXsQkKqFbAlQcnWMCRnOoPHS3I4vi6hmnDDeeYTSRvfLbW0fhwIBIwKB
897
gBIiOqZYaoqbeD9OS9z2K9KR2atlTxGxOJPXiP4ESqP3NVScWNwyZ3NXHpyrJLa0
898
EbVtzsQhLn6rF+TzXnOlcipFvjsem3iYzCpuChfGQ6SovTcOjHV9z+hnpXvQ/fon
899
soVRZY65wKnF7IAoUwTmJS9opqgrN6kRgCd3DASAMd1bAkEA96SBVWFt/fJBNJ9H
900
tYnBKZGw0VeHOYmVYbvMSstssn8un+pQpUm9vlG/bp7Oxd/m+b9KWEh2xPfv6zqU
901
avNwHwJBANqzGZa/EpzF4J8pGti7oIAPUIDGMtfIcmqNXVMckrmzQ2vTfqtkEZsA
902
4rE1IERRyiJQx6EJsz21wJmGV9WJQ5kCQQDwkS0uXqVdFzgHO6S++tjmjYcxwr3g
903
H0CoFYSgbddOT6miqRskOQF3DZVkJT3kyuBgU2zKygz52ukQZMqxCb1fAkASvuTv
904
qfpH87Qq5kQhNKdbbwbmd2NxlNabazPijWuphGTdW0VfJdWfklyS2Kr+iqrs/5wV
905
HhathJt636Eg7oIjAkA8ht3MQ+XSl9yIJIS8gVpbPxSw5OMfw0PjVE7tBdQruiSc
906
nvuQES5C9BMHjF39LZiGH1iLQy7FgdHyoP+eodI7
907
-----END RSA PRIVATE KEY-----
911
class SocketListener(threading.Thread):
913
def __init__(self, callback):
914
threading.Thread.__init__(self)
915
self._callback = callback
916
self._socket = socket.socket()
917
self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
918
self._socket.bind(('localhost', 0))
919
self._socket.listen(1)
920
self.port = self._socket.getsockname()[1]
921
self._stop_event = threading.Event()
924
# called from outside this thread
925
self._stop_event.set()
926
# use a timeout here, because if the test fails, the server thread may
927
# never notice the stop_event.
933
readable, writable_unused, exception_unused = \
934
select.select([self._socket], [], [], 0.1)
935
if self._stop_event.isSet():
937
if len(readable) == 0:
940
s, addr_unused = self._socket.accept()
941
# because the loopback socket is inline, and transports are
942
# never explicitly closed, best to launch a new thread.
943
threading.Thread(target=self._callback, args=(s,)).start()
944
except socket.error, x:
945
sys.excepthook(*sys.exc_info())
946
warning('Socket error during accept() within unit test server'
949
# probably a failed test; unit test thread will log the
951
sys.excepthook(*sys.exc_info())
952
warning('Exception from within unit test server thread: %r' %
956
class SocketDelay(object):
957
"""A socket decorator to make TCP appear slower.
959
This changes recv, send, and sendall to add a fixed latency to each python
960
call if a new roundtrip is detected. That is, when a recv is called and the
961
flag new_roundtrip is set, latency is charged. Every send and send_all
964
In addition every send, sendall and recv sleeps a bit per character send to
967
Not all methods are implemented, this is deliberate as this class is not a
968
replacement for the builtin sockets layer. fileno is not implemented to
969
prevent the proxy being bypassed.
973
_proxied_arguments = dict.fromkeys([
974
"close", "getpeername", "getsockname", "getsockopt", "gettimeout",
975
"setblocking", "setsockopt", "settimeout", "shutdown"])
977
def __init__(self, sock, latency, bandwidth=1.0,
980
:param bandwith: simulated bandwith (MegaBit)
981
:param really_sleep: If set to false, the SocketDelay will just
982
increase a counter, instead of calling time.sleep. This is useful for
983
unittesting the SocketDelay.
986
self.latency = latency
987
self.really_sleep = really_sleep
988
self.time_per_byte = 1 / (bandwidth / 8.0 * 1024 * 1024)
989
self.new_roundtrip = False
992
if self.really_sleep:
995
SocketDelay.simulated_time += s
997
def __getattr__(self, attr):
998
if attr in SocketDelay._proxied_arguments:
999
return getattr(self.sock, attr)
1000
raise AttributeError("'SocketDelay' object has no attribute %r" %
1004
return SocketDelay(self.sock.dup(), self.latency, self.time_per_byte,
1007
def recv(self, *args):
1008
data = self.sock.recv(*args)
1009
if data and self.new_roundtrip:
1010
self.new_roundtrip = False
1011
self.sleep(self.latency)
1012
self.sleep(len(data) * self.time_per_byte)
1015
def sendall(self, data, flags=0):
1016
if not self.new_roundtrip:
1017
self.new_roundtrip = True
1018
self.sleep(self.latency)
1019
self.sleep(len(data) * self.time_per_byte)
1020
return self.sock.sendall(data, flags)
1022
def send(self, data, flags=0):
1023
if not self.new_roundtrip:
1024
self.new_roundtrip = True
1025
self.sleep(self.latency)
1026
bytes_sent = self.sock.send(data, flags)
1027
self.sleep(bytes_sent * self.time_per_byte)
1031
class SFTPServer(Server):
1032
"""Common code for SFTP server facilities."""
1034
def __init__(self, server_interface=StubServer):
1035
self._original_vendor = None
1036
self._homedir = None
1037
self._server_homedir = None
1038
self._listener = None
1040
self._vendor = ssh.ParamikoVendor()
1041
self._server_interface = server_interface
1044
self.add_latency = 0
1046
def _get_sftp_url(self, path):
1047
"""Calculate an sftp url to this server for path."""
1048
return 'sftp://foo:bar@localhost:%d/%s' % (self._listener.port, path)
1050
def log(self, message):
1051
"""StubServer uses this to log when a new server is created."""
1052
self.logs.append(message)
1054
def _run_server_entry(self, sock):
1055
"""Entry point for all implementations of _run_server.
1057
If self.add_latency is > 0.000001 then sock is given a latency adding
1060
if self.add_latency > 0.000001:
1061
sock = SocketDelay(sock, self.add_latency)
1062
return self._run_server(sock)
1064
def _run_server(self, s):
1065
ssh_server = paramiko.Transport(s)
1066
key_file = pathjoin(self._homedir, 'test_rsa.key')
1067
f = open(key_file, 'w')
1068
f.write(STUB_SERVER_KEY)
1070
host_key = paramiko.RSAKey.from_private_key_file(key_file)
1071
ssh_server.add_server_key(host_key)
1072
server = self._server_interface(self)
1073
ssh_server.set_subsystem_handler('sftp', paramiko.SFTPServer,
1074
StubSFTPServer, root=self._root,
1075
home=self._server_homedir)
1076
event = threading.Event()
1077
ssh_server.start_server(event, server)
1080
def setUp(self, backing_server=None):
1081
# XXX: TODO: make sftpserver back onto backing_server rather than local
1083
if not (backing_server is None or
1084
isinstance(backing_server, local.LocalURLServer)):
1085
raise AssertionError(
1086
"backing_server should not be %r, because this can only serve the "
1087
"local current working directory." % (backing_server,))
1088
self._original_vendor = ssh._ssh_vendor_manager._cached_ssh_vendor
1089
ssh._ssh_vendor_manager._cached_ssh_vendor = self._vendor
1090
if sys.platform == 'win32':
1091
# Win32 needs to use the UNICODE api
1092
self._homedir = getcwd()
1094
# But Linux SFTP servers should just deal in bytestreams
1095
self._homedir = os.getcwd()
1096
if self._server_homedir is None:
1097
self._server_homedir = self._homedir
1099
if sys.platform == 'win32':
1101
self._listener = SocketListener(self._run_server_entry)
1102
self._listener.setDaemon(True)
1103
self._listener.start()
1106
"""See bzrlib.transport.Server.tearDown."""
1107
self._listener.stop()
1108
ssh._ssh_vendor_manager._cached_ssh_vendor = self._original_vendor
1110
def get_bogus_url(self):
1111
"""See bzrlib.transport.Server.get_bogus_url."""
1112
# this is chosen to try to prevent trouble with proxies, wierd dns, etc
1113
# we bind a random socket, so that we get a guaranteed unused port
1114
# we just never listen on that port
1116
s.bind(('localhost', 0))
1117
return 'sftp://%s:%s/' % s.getsockname()
1120
class SFTPFullAbsoluteServer(SFTPServer):
1121
"""A test server for sftp transports, using absolute urls and ssh."""
1124
"""See bzrlib.transport.Server.get_url."""
1125
homedir = self._homedir
1126
if sys.platform != 'win32':
1127
# Remove the initial '/' on all platforms but win32
1128
homedir = homedir[1:]
1129
return self._get_sftp_url(urlutils.escape(homedir))
1132
class SFTPServerWithoutSSH(SFTPServer):
1133
"""An SFTP server that uses a simple TCP socket pair rather than SSH."""
1136
super(SFTPServerWithoutSSH, self).__init__()
1137
self._vendor = ssh.LoopbackVendor()
1139
def _run_server(self, sock):
1140
# Re-import these as locals, so that they're still accessible during
1141
# interpreter shutdown (when all module globals get set to None, leading
1142
# to confusing errors like "'NoneType' object has no attribute 'error'".
1143
class FakeChannel(object):
1144
def get_transport(self):
1146
def get_log_channel(self):
1150
def get_hexdump(self):
1155
server = paramiko.SFTPServer(
1156
FakeChannel(), 'sftp', StubServer(self), StubSFTPServer,
1157
root=self._root, home=self._server_homedir)
1159
server.start_subsystem(
1160
'sftp', None, ssh.SocketAsChannelAdapter(sock))
1161
except socket.error, e:
1162
if (len(e.args) > 0) and (e.args[0] == errno.EPIPE):
1163
# it's okay for the client to disconnect abruptly
1164
# (bug in paramiko 1.6: it should absorb this exception)
1168
except Exception, e:
1169
# This typically seems to happen during interpreter shutdown, so
1170
# most of the useful ways to report this error are won't work.
1171
# Writing the exception type, and then the text of the exception,
1172
# seems to be the best we can do.
1174
sys.stderr.write('\nEXCEPTION %r: ' % (e.__class__,))
1175
sys.stderr.write('%s\n\n' % (e,))
1176
server.finish_subsystem()
1179
class SFTPAbsoluteServer(SFTPServerWithoutSSH):
1180
"""A test server for sftp transports, using absolute urls."""
1183
"""See bzrlib.transport.Server.get_url."""
1184
homedir = self._homedir
1185
if sys.platform != 'win32':
1186
# Remove the initial '/' on all platforms but win32
1187
homedir = homedir[1:]
1188
return self._get_sftp_url(urlutils.escape(homedir))
1191
class SFTPHomeDirServer(SFTPServerWithoutSSH):
1192
"""A test server for sftp transports, using homedir relative urls."""
1195
"""See bzrlib.transport.Server.get_url."""
1196
return self._get_sftp_url("~/")
1199
class SFTPSiblingAbsoluteServer(SFTPAbsoluteServer):
1200
"""A test server for sftp transports where only absolute paths will work.
1202
It does this by serving from a deeply-nested directory that doesn't exist.
1205
def setUp(self, backing_server=None):
1206
self._server_homedir = '/dev/noone/runs/tests/here'
1207
super(SFTPSiblingAbsoluteServer, self).setUp(backing_server)
1210
895
def get_test_permutations():
1211
896
"""Return the permutations to be used in testing."""
1212
return [(SFTPTransport, SFTPAbsoluteServer),
1213
(SFTPTransport, SFTPHomeDirServer),
1214
(SFTPTransport, SFTPSiblingAbsoluteServer),
897
from bzrlib.tests import stub_sftp
898
return [(SFTPTransport, stub_sftp.SFTPAbsoluteServer),
899
(SFTPTransport, stub_sftp.SFTPHomeDirServer),
900
(SFTPTransport, stub_sftp.SFTPSiblingAbsoluteServer),
added
removed
bzrlib/transport/sftp.py
