| 1 | #
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| 2 | # Eric S. Raymond
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| 3 | #
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| 4 | # Greatly modified by Nigel W. Moriarty
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| 5 | # April 2003
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| 6 | #
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| 7 | from pexpect import *
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| 8 | import os, sys
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| 9 | import getpass
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| 10 | import time, string
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| 11 |
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| 12 | class ssh_session:
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| 13 | "Session with extra state including the password to be used."
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| 14 | def __init__(self, user, host, password=None, verbose=0):
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| 15 | self.user = user
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| 16 | self.host = host
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| 17 | self.verbose = verbose
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| 18 | self.password = password
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| 19 | self.keys = [
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| 20 | 'authenticity',
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| 21 | ' password: ',
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| 22 | '@@@@@@@@@@@@',
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| 23 | 'Command not found.',
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| 24 | EOF,
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| 25 | ]
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| 26 | #self.f = open('ssh.out','w+')
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| 27 |
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| 28 | def __del__(self):
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| 29 | pass
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| 30 | #self.f.close()
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| 31 |
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| 32 | def __repr__(self):
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| 33 | outl = 'class :'+self.__class__.__name__
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| 34 | for attr in self.__dict__:
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| 35 | if attr == 'password':
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| 36 | outl += '\n\t'+attr+' : '+'*'*len(self.password)
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| 37 | else:
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| 38 | outl += '\n\t'+attr+' : '+str(getattr(self, attr))
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| 39 | return outl
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| 40 |
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| 41 | def __exec(self, command):
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| 42 | "Execute a command on the remote host. Return the output."
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| 43 | child = spawn(command, timeout=5000)
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| 44 | #child.timeout = 5000
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| 45 | if self.verbose:
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| 46 | print "-> " + command + "\n"
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| 47 | #sys.stderr.write("-> " + command + "\n")
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| 48 | seen = child.expect(self.keys)
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| 49 | #self.f.write(str(child.before) + str(child.after)+'\n')
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| 50 | if seen == 0:
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| 51 | child.sendline('yes')
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| 52 | seen = child.expect(self.keys)
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| 53 | if seen == 1:
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| 54 | if not self.password:
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| 55 | self.password = getpass.getpass(self.user+'@'+self.host+"'s password:")
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| 56 | child.sendline(self.password)
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| 57 | child.readline()
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| 58 | for line in child:
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| 59 | print string.replace(line, "\n", "")
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| 60 | time.sleep(5)
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| 61 | # Added to allow the background running of remote process
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| 62 | if not child.isalive():
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| 63 | seen = child.expect(self.keys)
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| 64 | if seen == 2:
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| 65 | lines = child.readlines()
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| 66 | #self.f.write(lines)
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| 67 | if self.verbose:
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| 68 | pass
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| 69 | print "<- " + child.before +"|\n"
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| 70 | try:
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| 71 | pass
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| 72 | #self.f.write(str(child.before) + str(child.after)+'\n')
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| 73 | except:
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| 74 | pass
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| 75 | return child.before
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| 76 |
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| 77 | def ssh(self, command):
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| 78 | return self.__exec("ssh -l %s %s \"%s\"" \
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| 79 | % (self.user,self.host,command))
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| 80 |
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| 81 | def scp(self, src, dst, option=None):
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| 82 | if option:
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| 83 | return self.__exec("scp -"+option+" %s %s@%s:%s" \
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| 84 | % (src, self.user, self.host, dst))
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| 85 |
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| 86 | return self.__exec("scp %s %s@%s:%s" \
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| 87 | % (src, self.user, self.host, dst))
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| 88 |
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| 89 | def scpget(self, src, dst, option=None):
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| 90 | if option:
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| 91 | return self.__exec("scp -"+option+" %s@%s:%s %s " \
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| 92 | % (self.user, self.host, src, dst))
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| 93 |
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| 94 | return self.__exec("scp %s@%s:%s %s " \
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| 95 | % (self.user, self.host, src, dst))
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| 96 |
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| 97 |
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| 98 | def exists(self, file):
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| 99 | "Retrieve file permissions of specified remote file."
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| 100 | seen = self.ssh("/bin/ls -ld %s" % file)
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| 101 | if string.find(seen, "No such file") > -1:
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| 102 | return None # File doesn't exist
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| 103 | else:
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| 104 | return seen.split()[0] # Return permission field of listing.
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