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slp.py
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2008-10-13
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# -*- coding: utf-8 -*-
#
# (c) Copyright 2003-2007 Hewlett-Packard Development Company, L.P.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Author: Don Welch
#
# Std Lib
import sys
import time
import socket
import select
import struct
import random
import re
# Local
from g import *
import utils
prod_pat = re.compile(r"""\(\s*x-hp-prod_id\s*=\s*(.*?)\s*\)""", re.IGNORECASE)
mac_pat = re.compile(r"""\(\s*x-hp-mac\s*=\s*(.*?)\s*\)""", re.IGNORECASE)
num_port_pat = re.compile(r"""\(\s*x-hp-num_port\s*=\s*(.*?)\s*\)""", re.IGNORECASE)
ip_pat = re.compile(r"""\(\s*x-hp-ip\s*=\s*(.*?)\s*\)""", re.IGNORECASE)
p1_pat = re.compile(r"""\(\s*x-hp-p1\s*=(?:\d\)|\s*(.*?)\s*\))""", re.IGNORECASE)
p2_pat = re.compile(r"""\(\s*x-hp-p2\s*=(?:\d\)|\s*(.*?)\s*\))""", re.IGNORECASE)
p3_pat = re.compile(r"""\(\s*x-hp-p3\s*=(?:\d\)|\s*(.*?)\s*\))""", re.IGNORECASE)
hn_pat = re.compile(r"""\(\s*x-hp-hn\s*=\s*(.*?)\s*\)""", re.IGNORECASE)
def detectNetworkDevices(ttl=4, timeout=10): #, xid=None, qappobj = None):
mcast_addr, mcast_port ='224.0.1.60', 427
found_devices = {}
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
x = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
x.connect(('1.2.3.4', 56))
except socket.error:
log.error("Network is unreachable. Please check your network connection and try again.")
return {}
intf = x.getsockname()[0]
x.close()
s.setblocking(0)
ttl = struct.pack('B', ttl)
try:
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
except (AttributeError, socket.error):
pass
try:
s.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_TTL, ttl)
s.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_IF, socket.inet_aton(intf) + socket.inet_aton('0.0.0.0'))
s.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_LOOP ,1)
except Exception, e:
log.error("Unable to setup multicast socket for SLP: %s" % e)
return {}
packet = ''.join(['\x01\x06\x00\x2c\x00\x00\x65\x6e\x00\x03',
struct.pack('!H', random.randint(1, 65535)), '\x00\x00\x00\x18service:x-hpnp-discover:\x00\x00\x00\x00'])
try:
s.sendto(packet, 0, (mcast_addr, mcast_port))
except socket.error, e:
log.error("Unable to send broadcast SLP packet: %s" % e)
time_left = timeout
while time_left > 0:
start_time = time.time()
r, w, e = select.select([s], [], [s], time_left)
time_left -= (time.time() - start_time)
if not r: continue
data, addr = s.recvfrom(2048)
update_spinner()
log.log_data(data, width=32)
try:
ver, func, length, flags, dialect, lang_code, char_encode, recv_xid, status_code, attr_length = \
struct.unpack("!BBHBBHHHHH", data[:16])
x = struct.unpack("!%ds" % attr_length, data[16:])[0].strip()
except struct.error:
continue
try:
num_ports = int(num_port_pat.search(x).group(1))
except (AttributeError, ValueError):
num_ports = 1
if num_ports == 0: # Embedded devices
num_ports = 1
y = {'num_devices' : 0, 'num_ports': num_ports, 'product_id' : '',
'status_code': 0, 'device2': '0', 'device3': '0', 'note': '', 'device1': '0'}
# Check port 1
try:
y['device1'] = p1_pat.search(x).group(1)
except AttributeError:
y['device1'] = '0'
else:
y['num_devices'] += 1
if num_ports > 1: # Check port 2
try:
y['device2'] = p2_pat.search(x).group(1)
except AttributeError:
y['device2'] = '0'
else:
y['num_devices'] += 1
if num_ports > 2: # Check port 3
try:
y['device3'] = p3_pat.search(x).group(1)
except AttributeError:
y['device3'] = '0'
else:
y['num_devices'] += 1
if y['device1'] is None:
y['device1'] = '0'
if y['device2'] is None:
y['device2'] = '0'
if y['device3'] is None:
y['device3'] = '0'
try:
y['product_id'] = prod_pat.search(x).group(1)
except AttributeError:
y['product_id'] = ''
try:
y['mac'] = mac_pat.search(x).group(1)
except AttributeError:
y['mac'] = ''
try:
y['ip'] = ip_pat.search(x).group(1)
except AttributeError:
y['ip'] = ''
try:
y['hn'] = hn_pat.search(x).group(1)
except AttributeError:
y['hn'] = ''
y['status_code'] = status_code
found_devices[addr[0]] = y
log.debug("Found device: %s" % y)
return found_devices