/usr/share/hplip/hpdio.py is in hplip-data 3.14.3-0ubuntu3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 | #! /usr/bin/python
# -*- coding: utf-8 -*-
#
# (c) Copyright 2003-2008 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
#
__version__ = '0.1'
__title__ = "Services and Status System Tray Device I/O Child Process"
__mod__ = 'hpdio'
__doc__ = "Provides device I/O process isolation for system tray application."
# StdLib
import sys
import struct
import os
import time
import Queue
import select
from cPickle import dumps, HIGHEST_PROTOCOL
# Local
from base.g import *
from base.codes import *
from base import utils, device, status, models
# dBus
try:
from dbus import lowlevel, SessionBus
except ImportError:
log.error("dbus failed to load (python-dbus ver. 0.80+ required). Exiting...")
sys.exit(1)
# Globals
PIPE_BUF = 4096
session_bus = None
r2, w3 = None, None
devices = {} # { 'device_uri' : device.Device(), ... }
def send_message(device_uri, event_code, bytes_written=0):
args = [device_uri, '', event_code, prop.username, 0, '', '', bytes_written]
msg = lowlevel.SignalMessage('/', 'com.hplip.StatusService', 'Event')
msg.append(signature='ssisissi', *args)
SessionBus().send_message(msg)
def run(read_pipe2=None, # pipe from hpssd
write_pipe3=None): # pipe to hpssd
global r2, w3
# tmp_dir = '/tmp'
os.umask(0111)
try:
log.set_module("hp-systray(hpdio)")
log.debug("PID=%d" % os.getpid())
r2, w3 = read_pipe2, write_pipe3
fmt = "80s80sI32sI80sf" # TODO: Move to Event class
fmt_size = struct.calcsize(fmt)
response = {}
dev = None
m = ''
while True:
try:
r, w, e = select.select([r2], [], [r2], 1.0)
except KeyboardInterrupt:
break
except select.error, e:
if e[0] == errno.EINTR:
continue
else:
break
if not r: continue
if e: break
m = ''.join([m, os.read(r2, fmt_size)])
if not m:
break
while len(m) >= fmt_size:
response.clear()
event = device.Event(*struct.unpack(fmt, m[:fmt_size]))
m = m[fmt_size:]
action = event.event_code
device_uri = event.device_uri
log.debug("Handling event...")
event.debug()
send_message(device_uri, EVENT_DEVICE_UPDATE_ACTIVE)
if action in (EVENT_DEVICE_UPDATE_REQUESTED, EVENT_POLLING_REQUEST):
#try:
if 1:
#log.debug("%s starting for %s" % (ACTION_NAMES[action], device_uri))
try:
dev = devices[device_uri]
except KeyError:
dev = devices[device_uri] = device.Device(device_uri, disable_dbus=True)
try:
#print "Device.open()"
dev.open()
except Error, e:
log.error(e.msg)
response = {'error-state': ERROR_STATE_ERROR,
'device-state': DEVICE_STATE_NOT_FOUND,
'status-code' : EVENT_ERROR_DEVICE_IO_ERROR}
if dev.device_state == DEVICE_STATE_NOT_FOUND:
dev.error_state = ERROR_STATE_ERROR
else:
if action == EVENT_DEVICE_UPDATE_REQUESTED:
try:
#print "Device.queryDevice()"
dev.queryDevice()
except Error, e:
log.error("Query device error (%s)." % e.msg)
dev.error_state = ERROR_STATE_ERROR
dev.status_code = EVENT_ERROR_DEVICE_IO_ERROR
response = dev.dq
#print response
log.debug("Device state = %d" % dev.device_state)
log.debug("Status code = %d" % dev.status_code)
log.debug("Error state = %d" % dev.error_state)
else: # EVENT_POLLING_REQUEST
try:
dev.pollDevice()
except Error, e:
log.error("Poll device error (%s)." % e.msg)
dev.error_state = ERROR_STATE_ERROR
else:
response = {'test' : 1}
#finally:
if 1:
if dev is not None:
dev.close()
#thread_activity_lock.release()
elif action == EVENT_USER_CONFIGURATION_CHANGED:
pass
elif action == EVENT_SYSTEMTRAY_EXIT:
log.debug("Exiting")
sys.exit(1)
send_message(device_uri, EVENT_DEVICE_UPDATE_INACTIVE)
if action == EVENT_DEVICE_UPDATE_REQUESTED:
#print response
data = dumps(response, HIGHEST_PROTOCOL)
log.debug("Sending data through pipe to hpssd...")
total_written = 0
while True:
total_written += os.write(w3, data[:PIPE_BUF])
data = data[PIPE_BUF:]
if not data:
break
log.debug("Wrote %d bytes" % total_written)
send_message(device_uri, EVENT_DEVICE_UPDATE_REPLY, total_written)
elif action == EVENT_POLLING_REQUEST:
# TODO: Translate into event: scan requested, copy requested, etc.. send as event
#try:
# os.write
pass
except KeyboardInterrupt:
log.debug("Ctrl-C: Exiting...")
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