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annotate newkey.py @ 41:900ff99ec749

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less noisy if success
author Henry S. Thompson <ht@inf.ed.ac.uk>
date Mon, 03 Jan 2022 19:26:11 +0000
parents f13017bb4502
children 59517f60826d
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Henry S. Thompson <ht@inf.ed.ac.uk>
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1 #!/usr/bin/python3
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2 '''Install a new ssh key on paul and in a list of hosts,
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3 confirm success, and if so comment out any older versions
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4 Usage: newkey.py [-v intermediary] keytype [-i] [-c client | client list filename]
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5 client list filename defaults to /etc/sshclients _on Paul_
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6 If -i, read tar with new key pair from stdin, otherwise from ~/.ssh/id_$keytype.pub
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7
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8 If run on a machine other than paul, will try to get it to Paul to distribute:
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9 1) Using ssh-copy-id directly;
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10 2) Using ssh-copy-id via intermediary (defaults to $DESKTOP)
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11 [change this to maritain once it's worked for everbody''' # '
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12
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13 import sys, os
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14 from socket import gethostname
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15 from subprocess import run, PIPE
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16
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17 hack=os.environ.copy()
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18 hack['SSH_AUTH_SOCK']='/home/ht/.gnupg/S.gpg-agent.ssh'
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19
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20 def ssh_copy_id(keyfile,client):
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21 print(["ssh-copy-id","-i",keyfile,client],'...',sep='',end='')
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22 res=run(["ssh-copy-id","-i",keyfile,client],env=hack,text=True,
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23 stdout=PIPE,stderr=PIPE)
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24 if res.returncode:
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25 print('failed %s'%res.returncode)
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26 outs,errs=res.communicate()
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27 print(errs)
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28 else:
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29 print('succeeded')
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30
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31 ihost=None
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32 if sys.argv[1]=='-v':
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33 sys.argv.pop(1)
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34 ihost=sys.argv.pop(1).lower()
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35
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36 keytype=sys.argv.pop(1)
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37
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38 if len(sys.argv)>1 and sys.argv[1]=='-i':
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39 # Working for some other client
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40 sys.argv.pop(1)
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41 res=os.system("cd /tmp ; rm -rf keys ; tar -xzf -")
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42 if res:
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43 print("untar failed",res)
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44 exit(res)
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45 keydir="/tmp/keys"
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46 else:
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47 keydir=os.path.expanduser("~/.ssh")
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48
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49 keyfile="%s/id_%s.pub"%(keydir,keytype)
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50
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51 try:
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52 clients=sys.argv.pop(1)
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53 if clients=='-c':
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54 clients="-c %s"%sys.argv.pop(1)
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55 except:
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56 clients='/etc/sshclients'
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57
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58 host=gethostname().lower()
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59
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60 print(keytype,keyfile,ihost,clients)
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61
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62 if host!='paul':
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63 if clients[0]!='-':
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64 print("Note, %s will be dereferenced on paul, not locally"%clients,
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65 file=sys.stderr)
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66 cmd="/home/ht/bin/newkey.py %s -i %s"%(keytype,
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67 '%s'%clients if clients is not None else '')
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68 print(cmd)
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69 res=os.system("mkdir -p /tmp/keys ; cd /tmp ; bash -c 'cp -a %s keys' ; tar -czf keys.tar.gz keys"%os.path.expanduser("~/.ssh/id_%s{,.pub}"%keytype))
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70 if res:
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71 print("tar failed",res)
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72 exit(res)
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73 with open("/tmp/keys.tar.gz","rb") as keytar:
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74 if ihost is None:
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75 res=run(['ssh','paul',cmd],stdin=keytar).returncode
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76 if res:
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77 print("paul failed",res)
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78 exit(res)
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79 else:
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80 res=run(['ssh',ihost,'/afs/inf.ed.ac.uk/user/h/ht/share/bin/goHome',cmd],stdin=keytar).returncode
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81 if res:
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82 print("going via %s failed"%ihost,res)
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83 exit(res)
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84
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85
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86 if clients[0]=='-':
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87 ssh_copy_id(keyfile,clients[3:])
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88 else:
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89 with open(clients) as cfile:
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90 for l in cfile:
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91 ssh_copy_id(keyfile,l.rstrip())
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92
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93