PC Welt 2006 November (DVD)/PCWELT_11_2006.ISO/casper/filesystem.squashfs/usr/lib/hplip/base/slp.py

Python Source | 2006-08-30 | 5.4 KB | 176 lines

# -*- coding: utf-8 -*-
#
# (c) Copyright 2003-2006 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 *


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(mcast_addr='224.0.1.60', mcast_port=427, ttl=4, timeout=5, xid=None, qappobj = None):
    found_devices = {}

    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

    try:
        addr = socket.gethostname()
        intf = socket.gethostbyname(addr)
    except socket.error:
        x=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        x.connect(('1.2.3.4',56))
        intf = x.getsockname()[0]
        x.close()

    s.setblocking(0)
    ttl = struct.pack('b', ttl)

    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'))
    except:
        log.error("Unable to setup multicast socket for SLP.")
        return {}

    packet = ''.join(['\x01\x06\x00,\x00\x00en\x00\x03',
                        struct.pack('!H', xid or random.randint(1, 65535)),
                        '\x00\x00\x00\x18service:x-hpnp-discover:\x00\x00\x00\x00'])

    try:
        s.sendto(packet, (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:

        if qappobj is not None:
            qappobj.processEvents(0)

        start_time = time.time()
        r, w, e = select.select([s], [], [], time_left)
        time_left -= (time.time() - start_time)

        if qappobj is not None:
            qappobj.processEvents(0)

        if r == []: continue

        data, addr = s.recvfrom(1024)
        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()
        y = {}

        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_ports'] = num_ports
        y['num_devices'] = 0
        y['device1'] = '0'
        y['device2'] = '0'
        y['device3'] = '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


    return found_devices