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#
# Eric S. Raymond
#
# Greatly modified by Nigel W. Moriarty
# April 2003
#
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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