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#!/usr/bin/env python
from glob import glob
from os import rename, stat
from socket import gethostbyname
from Types import ConfigFile
from Generator import Generator
from GeneratorUtils import DirectoryBacked
class sshbase(Generator):
__name__ = 'sshbase'
__version__ = '$Id$'
__author__ = 'bcfg-dev@mcs.anl.gov'
__provides__ = {'ConfigFile':{'/etc/ssh/ssh_known_hosts':'build_skn',
'/etc/ssh/ssh_host_dsa_key':'build_hk',
'/etc/ssh/ssh_host_rsa_key':'build_hk',
'/etc/ssh/ssh_host_dsa_key.pub':'build_hk',
'/etc/ssh/ssh_host_rsa_key.pub':'build_hk'}}
def __setup__(self):
self.repository = DirectoryBacked(self.data, self.core.fam)
def build_skn(self,name,client):
filedata = self.repository.entries['ssh_known_hosts'].data
ip=gethostbyname(client)
keylist = map(lambda x:x%client, ["ssh_host_dsa_key.pub.H_%s","ssh_host_rsa_key.pub.H_%s","ssh_host_key.pub.H_%s"])
for hostkey in keylist:
filedata += "%s,%s,%s %s"%(client,"%s.mcs.anl.gov"%(client),ip,self.repository.entries[hostkey].data)
return ConfigFile(name,'root','root','0644',filedata)
def build_hk(self,name,client):
filename = "%s.H_%s"%(name.split('/')[-1],client)
if filename not in self.repository.entries.keys():
self.GenerateHostKeys(client)
self.GenerateKnownHosts()
keydata = self.repository.entries[filename].data
if "ssh_host_key.H_" in filename:
return ConfigFile(name,'root','root','0600',keydata,'base64')
return ConfigFile(name,'root','root','0600',keydata)
def GenerateKnownHosts(self):
output = ''
for f in self.repository.entries.keys():
if ".pub.H_" in f:
h = f.split('_')[-1]
output += "%s,%s.mcs.anl.gov,%s %s"%(h, h, gethostbyname(h), self.repository.entries[f].data)
self.repository.entries['ssh_known_hosts'].data = output
def GenerateHostKeys(self,client):
keylist = map(lambda x:x%client, ["ssh_host_dsa_key.H_%s","ssh_host_rsa_key.H_%s","ssh_host_key.H_%s"])
for hostkey in keylist:
if 'ssh_host_rsa_key.H_' in hostkey:
keytype = 'rsa'
elif 'ssh_host_dsa_key.H_' in hostkey:
keytype = 'dsa'
else:
keytype = 'rsa1'
if hostkey not in self.repository.entries.keys():
system('ssh-keygen -f %s/%s -N "" -t %s -C root@%s'%(self.data,hostkey,keytype,client))
rename("%s/%s.pub"%(self.data,hostkey),"%s/"%(self.data)+".".join(hostkey.split('.')[:-1]+['pub']+hostkey.split('.')[-1]))
# call the notifier for global
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