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#!/usr/bin/python
import subprocess
import os
import re
import sys
import json
TINC_NETWORK =os.environ.get("TINC_NETWORK","retiolum")
# is_legacy is the parameter which defines if the tinc config files are handled old fashioned (parse from syslog),
# or if the new and hip tincctl should be used
is_legacy= os.environ.get("TINC_LEGACY",False)
SYSLOG_FILE = os.environ.get("LOG_FILE","/var/log/everything.log")
# Tags and Delimiters
TINC_TAG="tinc.%s" % TINC_NETWORK
BEGIN_NODES = "Nodes:"
END_NODES = "End of nodes."
BEGIN_SUBNET = "Subnet list:"
END_SUBNET = "End of subnet list"
BEGIN_EDGES = "Edges:"
END_EDGES = "End of edges."
def get_tinc_block(log_file):
""" returns an iterateable block from the given log file (syslog)
This function became obsolete with the introduction of tincctl
"""
from BackwardsReader import BackwardsReader
tinc_block = []
in_block = False
bf = BackwardsReader(log_file)
BOL = re.compile(".*tinc.%s\[[0-9]+\]: " % TINC_NETWORK)
while True:
line = bf.readline()
if not line:
raise Exception("end of file at log file? This should not happen!")
line = BOL.sub('',line).strip()
if END_SUBNET in line:
in_block = True
if not in_block:
continue
tinc_block.append(line)
if BEGIN_NODES in line:
break
return reversed(tinc_block)
def parse_new_input():
nodes = {}
pnodes = subprocess.check_output(["tincctl","-n",TINC_NETWORK,"dump","reachable","nodes"])
for line in pnodes.split('\n'):
if not line: continue
l = line.split()
nodes[l[0]]= { 'external-ip': l[2], 'external-port' : l[4] }
psubnets = subprocess.check_output(["tincctl","-n",TINC_NETWORK,"dump","subnets"])
for line in psubnets.split('\n'):
if not line: continue
l = line.split()
try:
if not nodes[l[2]].get('internal-ip',False):
nodes[l[2]]['internal-ip'] = []
nodes[l[2]]['internal-ip'].append(l[0].split('#')[0])
except KeyError:
pass # node does not exist (presumably)
pedges = subprocess.check_output(["tincctl","-n",TINC_NETWORK,"dump","edges"])
for line in pedges.split('\n'):
if not line: continue
l = line.split()
try:
if not nodes[l[0]].has_key('to') :
nodes[l[0]]['to'] = []
nodes[l[0]]['to'].append(
{'name':l[2],'addr':l[4],'port':l[6],'weight' : l[10] })
except KeyError:
pass #node does not exist
return nodes
def parse_input(log_data):
nodes={}
for line in log_data:
if BEGIN_NODES in line :
nodes={}
for line in log_data:
if END_NODES in line :
break
l = line.replace('\n','').split() #TODO unhack me
nodes[l[0]]= { 'external-ip': l[2], 'external-port' : l[4] }
if BEGIN_SUBNET in line :
for line in log_data:
if END_SUBNET in line :
break
l = line.replace('\n','').split()
if not nodes[l[2]].get('internal-ip',False):
nodes[l[2]]['internal-ip'] = []
nodes[l[2]]['internal-ip'].append(l[0].split('#')[0])
if BEGIN_EDGES in line :
edges = {}
for line in log_data:
if END_EDGES in line :
break
l = line.replace('\n','').split()
if not nodes[l[0]].has_key('to') :
nodes[l[0]]['to'] = []
nodes[l[0]]['to'].append(
{'name':l[2],'addr':l[4],'port':l[6],'weight' : l[10] })
return nodes
if __name__ == '__main__':
import subprocess,time
if is_legacy:
subprocess.call(["pkill","-SIGUSR2", "tincd"])
time.sleep(1)
print json.dumps(parse_input((get_tinc_block(SYSLOG_FILE))))
else:
print json.dumps(parse_new_input())
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