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#!/usr/bin/env python3

# converts 'set system syslog host <address>:<port>'
# to 'set system syslog host <address> port <port>'

import sys
import re

from vyos.configtree import ConfigTree

if (len(sys.argv) < 1):
  print("Must specify file name!")
  sys.exit(1)

file_name = sys.argv[1]

with open(file_name, 'r') as f:
  config_file = f.read()

config = ConfigTree(config_file)
cbase = ['system', 'syslog', 'host']

if not config.exists(cbase):
    sys.exit(0)

for host in config.list_nodes(cbase):
    if re.search(':[0-9]{1,5}$',host):
        h = re.search('^[a-zA-Z\-0-9\.]+', host).group(0)
        p = re.sub(':', '', re.search(':[0-9]+$', host).group(0))
        config.set(cbase + [h])        
        config.set(cbase + [h, 'port'], value=p)
        for fac in config.list_nodes(cbase + [host, 'facility']):
            config.set(cbase + [h, 'facility', fac])
            config.set_tag(cbase + [h, 'facility'])
            if config.exists(cbase + [host, 'facility', fac, 'protocol']):
                proto = config.return_value(cbase + [host, 'facility', fac, 'protocol'])
                config.set(cbase + [h, 'facility', fac, 'protocol'], value=proto)
            if config.exists(cbase + [host, 'facility', fac, 'level']):
                lvl = config.return_value(cbase + [host, 'facility', fac, 'level'])
                config.set(cbase + [h, 'facility', fac, 'level'], value=lvl)
        config.delete(cbase + [host])

    try:
        open(file_name,'w').write(config.to_string())
    except OSError as e:
        print("Failed to save the modified config: {}".format(e))
        sys.exit(1)