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#!/usr/bin/env python
"""
Eric S. Raymond
Greatly modified by Nigel W. Moriarty
April 2003
PEXPECT LICENSE
This license is approved by the OSI and FSF as GPL-compatible.
http://opensource.org/licenses/isc-license.txt
Copyright (c) 2012, Noah Spurrier <noah@noah.org>
PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
"""
from pexpect import *
import os, sys
import getpass
import time
class ssh_session:
"Session with extra state including the password to be used."
def __init__(self, user, host, password=None, verbose=0):
self.user = user
self.host = host
self.verbose = verbose
self.password = password
self.keys = [
'authenticity',
'assword:',
'@@@@@@@@@@@@',
'Command not found.',
EOF,
]
self.f = open('ssh.out','w')
def __repr__(self):
outl = 'class :'+self.__class__.__name__
for attr in self.__dict__:
if attr == 'password':
outl += '\n\t'+attr+' : '+'*'*len(self.password)
else:
outl += '\n\t'+attr+' : '+str(getattr(self, attr))
return outl
def __exec(self, command):
"Execute a command on the remote host. Return the output."
child = spawn(command,
#timeout=10,
)
if self.verbose:
sys.stderr.write("-> " + command + "\n")
seen = child.expect(self.keys)
self.f.write(str(child.before) + str(child.after)+'\n')
if seen == 0:
child.sendline('yes')
seen = child.expect(self.keys)
if seen == 1:
if not self.password:
self.password = getpass.getpass('Remote password: ')
child.sendline(self.password)
child.readline()
time.sleep(5)
# Added to allow the background running of remote process
if not child.isalive():
seen = child.expect(self.keys)
if seen == 2:
lines = child.readlines()
self.f.write(lines)
if self.verbose:
sys.stderr.write("<- " + child.before + "|\n")
try:
self.f.write(str(child.before) + str(child.after)+'\n')
except:
pass
self.f.close()
return child.before
def ssh(self, command):
return self.__exec("ssh -l %s %s \"%s\"" \
% (self.user,self.host,command))
def scp(self, src, dst):
return self.__exec("scp %s %s@%s:%s" \
% (src, session.user, session.host, dst))
def exists(self, file):
"Retrieve file permissions of specified remote file."
seen = self.ssh("/bin/ls -ld %s" % file)
if string.find(seen, "No such file") > -1:
return None # File doesn't exist
else:
return seen.split()[0] # Return permission field of listing.
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