Created
May 5, 2015 12:14
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Detectar y avisar de nuevas concesiones IP en nuestra red windows DHCP
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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
import poplib, smtplib, datetime, os | |
import locale, unicodedata | |
from email.Parser import Parser | |
from email.mime.text import MIMEText | |
from email.mime.image import MIMEImage | |
from email.mime.multipart import MIMEMultipart | |
from email.MIMEBase import MIMEBase | |
from email import Encoders | |
def mandaemail(user,passw,smtp,aquien,subject,texto,adjunto): | |
msg = MIMEMultipart() | |
textomsg=MIMEText(texto) | |
msg['Subject']=subject | |
msg['From']=user | |
msg['To']=aquien | |
msg.attach(textomsg) | |
if adjunto<>"": | |
part = MIMEBase('application', "octet-stream") | |
part.set_payload( open(adjunto,"rb").read() ) | |
Encoders.encode_base64(part) | |
(directorio, fichero) = os.path.split(adjunto) | |
part.add_header('Content-Disposition', 'attachment; filename="%s"' | |
% fichero) | |
msg.attach(part) | |
smtp=smtplib.SMTP(smtp) | |
smtp.login(user,passw) | |
smtp.sendmail(msg['From'],msg['To'],msg.as_string()) | |
smtp.close() | |
def dhcp_log(): | |
# el nombre del fichero log dhcp a pelo | |
locale.setlocale(locale.LC_TIME, '') | |
ruta = r'c:\windows\system32\dhcp' | |
dia = datetime.datetime.now().strftime('%a') | |
if datetime.datetime.now().isoweekday() == 3: | |
dia = 'Mier' | |
return ruta + '\DhcpSrvLog-' + dia + '.log' | |
# | |
fic_dhcp_hoy = dhcp_log() | |
#fic_dhcp_hoy = 'dhcpsrvlog-lun.log' | |
fic_fichados = 'dchp_fichados.txt' | |
dic={} | |
email=1 | |
haynuevo=0 | |
texnuevo='' | |
# Id., fecha, hora, descripción, dirección IP, nombre de host, dirección MAC | |
# cagemos id = 11 que tiene la mac | |
# leemos todos los pc que tenemos grabados | |
if os.path.exists(fic_fichados): | |
fic_abre_fichados = open(fic_fichados,"r") | |
lista=fic_abre_fichados.readlines() | |
for cada in lista: | |
cadena=cada.split(chr(9))[:-1] | |
if len(cadena)>0: | |
dic[cadena[0]]=cada[:-1] | |
fic_abre_fichados.close() | |
# vemos los pcs asignados del log dhcp | |
if os.path.exists(fic_dhcp_hoy): | |
fic_abre_dhcp_hoy = open(fic_dhcp_hoy,"r") | |
for row in fic_abre_dhcp_hoy.readlines(): | |
fila=row.split(",") | |
try: | |
pc = fila[5] | |
#print fila | |
mac = fila[6] | |
ip = fila[4] | |
fecha = fila[1] | |
hora = fila[2] | |
id = fila[0] | |
except: | |
continue | |
if pc=='' and mac<>'': | |
pc=mac | |
if pc <> '' and not pc in dic: | |
if id=='11' or id=='10': | |
dic[pc] = pc + chr(9) + ip + chr(9) + mac + chr(9) + fecha + chr(9) + hora | |
haynuevo += 1 | |
texnuevo = texnuevo + pc.split(".")[0] + '_' + mac + '+' | |
# grabamos nueva lista pcs grabados | |
if haynuevo>0: | |
fic_abre_fichados = open(fic_fichados,"w") | |
ordenado=sorted(dic.items()) | |
#print ordenado | |
for cada in ordenado: | |
#print dic[cada[0]] | |
fic_abre_fichados.write(dic[cada [0]] + '\n' ) | |
fic_abre_fichados.close() | |
# mandamos email de aviso | |
if email>0: | |
asunto = 'dhcp_nuevos_'+str(haynuevo) | |
texto = texnuevo | |
adjunto = fic_fichados | |
aquien='a@quienquieras.com' | |
mandaemail("remitente","passw","smtp",aquien,asunto,texto,adjunto) | |
exit() | |
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