| 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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