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# Copyright 2010 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
'''Test paramiko by doing an sftp copy from localhost.'''
import os
import paramiko
import pwd
import socket
import subprocess
import sys
import tempfile
import time
class SSHChannelAdapter(object):
'''Take an ssh subprocess and pretend it is a paramiko Channel.'''
def __init__(self, proc):
self.proc = proc
def send(self, data):
return os.write(self.proc.stdin.fileno(), data)
def recv(self, count):
try:
return os.read(self.proc.stdout.fileno(), count)
except socket.error, e:
if e.args[0] in (errno.EPIPE, errno.ECONNRESET, errno.ECONNABORTED,
errno.EBADF):
# Connection has closed. Paramiko expects an empty string in
# this case, not an exception.
return ''
raise
def get_name(self):
return 'obnam SSHChannelAdapter'
def close(self):
for func in [proc.stdin.close, proc.stdout.close, proc.wait]:
try:
func()
except OSError:
pass
username = pwd.getpwuid(os.getuid()).pw_name
host = 'localhost'
port = 22
path = '/tmp/zeroes'
subsystem = 'sftp'
args = ['ssh',
'-oForwardX11=no', '-oForwardAgent=no',
'-oClearAllForwardings=yes', '-oProtocol=2']
if port is not None:
args.extend(['-p', str(port)])
if username is not None:
args.extend(['-l', username])
args.extend(['-s', host, subsystem])
proc = transport = None
try:
raise OSError(None, None, None)
proc = subprocess.Popen(args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
close_fds=True)
except OSError:
transport = paramiko.Transport((host, port))
transport.connect()
agent = paramiko.Agent()
agent_keys = agent.get_keys()
for key in agent_keys:
try:
transport.auth_publickey(username, key)
break
except paramiko.SSHException:
pass
else:
raise Exception('no auth')
try:
keys = paramiko.util.load_host_keys(
os.path.expanduser('~/.ssh/known_hosts'))
except IOError:
print '*** Unable to open host keys file'
sys.exit(1)
t = transport
hostname = host
key = t.get_remote_server_key()
k = keys.lookup(hostname)
if k is None:
print 'unknown host %s (using it anyway)' % hostname
else:
key_type = key.get_name()
if not k.has_key(key_type):
print 'no key of type %s for %s' % (key_type, hostname)
print 'accepting host key anyway'
else:
host_key = k[key_type]
if host_key != key:
print 'wrong host key for %s' % hostname
sys.exit(1)
else:
print 'good host key for %s' % hostname
sftp = paramiko.SFTPClient.from_transport(transport)
else:
sftp = paramiko.SFTPClient(SSHChannelAdapter(proc))
n = 0
f = sftp.open(path)
start = time.time()
while True:
data = f.read(32*1024)
if not data:
break
n += len(data)
end = time.time()
f.close()
sftp.close()
if transport:
transport.close()
if proc:
proc.close()
duration = end - start
n = float(n)
print duration, n/1024/1024, 8 * n / duration / 1024 / 1024
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