Altri file necessari per mac2hostname.

This commit is contained in:
Emiliano Vavassori 2015-06-15 03:32:57 +02:00
parent 61ef012bfc
commit fa81433ef1
2 changed files with 89 additions and 0 deletions

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#!/usr/bin/env python
"""API to map MAC addresses to hostnames"""
from contextlib import contextmanager, closing
from sqlite3 import connect
from bottle import route, run, request
from json import dumps
import os
__author__ = "Enrico Bacis"
__email__ = "enrico.bacis@gmail.com"
# Aggiunta di Emiliano Vavassori <syntaxerrormmm-AT-gmail.com>
# Configuring default directories for the program
dbdir = '/var/lib/mac2hostname'
logdir = '/var/log/mac2hostname'
piddir = '/var/run/mac2hostname'
# Will create a PID file to be used with init.d script
pid = os.getpid()
op = open(piddir + '/service.pid', 'w')
op.write("%s" % pid)
op.close()
@contextmanager
def getcursor(db = dbdir + 'mac2hostname.db'):
with connect(db) as connection:
with closing(connection.cursor()) as cursor:
yield cursor
def init_tables():
with getcursor() as cursor:
cursor.execute('CREATE TABLE IF NOT EXISTS client (id INT PRIMARY KEY,'
'hostname TEXT NOT NULL UNIQUE, mac TEXT UNIQUE)')
cursor.execute('CREATE INDEX IF NOT EXISTS idxmac ON client(mac)')
@route('/hosts')
def hosts():
with getcursor() as cursor:
return dumps([dict((meta[0], data)
for meta, data in zip(cursor.description, row))
for row in cursor.execute('SELECT hostname, mac FROM client ORDER BY id')], indent=4)
def normalizemac(mac):
return ':'.join(x.zfill(2) for x in mac.split(':')).upper()
def gethostname(mac, base=None):
mac, base = normalizemac(mac), base or 'lab'
with getcursor() as cursor:
(newid,) = cursor.execute('SELECT COALESCE(MAX(id)+1, 1) FROM client').fetchone()
cursor.execute('INSERT OR IGNORE INTO client VALUES (%s, "%s-%s", "%s")' % (newid, base, newid, mac))
(hostname,) = cursor.execute('SELECT hostname FROM client WHERE mac = "%s"' % mac)
return hostname
@route('/mac2hostname')
def mac2hostname():
mac = request.query.mac
if not mac:
return 'Usage: GET /mac2hostname?mac=XX_XX_XX_XX_XX_XX[&base=YYY]'
return gethostname(mac, base)
if __name__ == '__main__':
init_tables()
run(host='0.0.0.0', port=3000)

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---
# Installa e configura il servizio per rinominare il client
# Grazie per il servizio a Enrico Bacis
- name: Installazione dipendenze Python
yum: pkg=python-bottle state=present
sudo: yes
- name: Creazione directory necessarie
file: path={{ item }} state=directory
with_items:
- /var/lib/mac2hostname
- /var/run/mac2hostname
- /var/log/mac2hostname
- /usr/share/mac2hostname
sudo: yes
- name: Copia dello script
copy: src=mac2hostname.py dest=/usr/share/mac2hostname/mac2hostname.py mode=0755
sudo: yes
- name: Finalizzazione della copia
file: src=/usr/share/mac2hostname/mac2hostname.py dest=/usr/bin/mac2hostname state=link
sudo: yes