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# -*- coding: utf-8 -*-
#
# Copyright © 2008 Red Hat, Inc. All rights reserved.
# Copyright © 2009 Mandriva. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the GNU
# General Public License v.2. This program is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY expressed or implied, including the
# implied warranties 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., 51 Franklin Street, Fifth
# Floor, Boston, MA 02110-1301, USA. Any Red Hat trademarks that are
# incorporated in the source code or documentation are not subject to the GNU
# General Public License and may only be used or replicated with the express
# permission of Red Hat, Inc.
#
# Author(s): Luke Macken <lmacken@redhat.com>
# Aurelien Lefebvre <alefebvre@mandriva.com>
# Luis Medinas <luis.medinas@caixamagica.pt>
import subprocess
import logging
import os
import re
import signal
from datetime import datetime
from stat import ST_SIZE
from threading import Thread
from time import sleep
from liveusb import _
class LiveUSBError(Exception):
_message = ""
def __init__(self, message): self._message = message
def _get_message(self): return self._message
def _set_message(self, message): self._message = message
message = property(_get_message, _set_message)
class LiveUSBCreator(object):
""" An OS-independent parent class for Live USB Creators """
iso = None
drives = {}
pids = []
isosize = 0
log = None
drive = None
def __init__(self, opts):
self.opts = opts
self._setup_logger()
def _setup_logger(self):
self.log = logging.getLogger(__name__)
level = logging.INFO
if self.opts.verbose:
level = logging.DEBUG
self.log.setLevel(level)
self.handler = logging.StreamHandler()
self.handler.setLevel(level)
formatter = logging.Formatter("[%(module)s:%(lineno)s] %(message)s")
self.handler.setFormatter(formatter)
self.log.addHandler(self.handler)
def detect_removable_drives(self):
""" This method should populate self.drives with removable devices """
raise NotImplementedError
def terminate(self):
""" Terminate any subprocesses that we have spawned """
raise NotImplementedError
def set_iso(self, iso):
""" Select the given ISO """
self.iso = self._to_unicode(iso)
self.isosize = os.stat(self.iso)[ST_SIZE]
def _to_unicode(self, obj, encoding='utf-8'):
if hasattr(obj, 'toUtf8'): # PyQt4.QtCore.QString
obj = str(obj.toUtf8())
#if isinstance(obj, basestring):
# if not isinstance(obj, unicode):
# obj = unicode(obj, encoding, 'replace')
return obj
def _test_hybrid_1(self, iso):
hybrid = False
for i in range(0,512):
if not iso.read(1) == '\x00':
hybrid = True
if hybrid:
break
return hybrid
def _test_hybrid_2(self, iso):
hybrid = False
iso.seek(0x1fe)
if iso.read(1) == '\x55':
iso.seek(0x1ff)
if iso.read(1) == '\xaa':
hybrid = True
return hybrid
def _test_hybrid_3(self, iso):
hybrid = True
iso.seek(0x200)
for i in range(0x200,0x8000):
if iso.read(1) != '\x00':
hybrid = False
break
return hybrid
def is_hybrid(self, iso):
isofile = open(iso, "rb")
hybrid = self._test_hybrid_1(isofile) and self._test_hybrid_2(isofile) and self._test_hybrid_3(isofile)
isofile.close()
return hybrid
class LinuxLiveUSBCreator(LiveUSBCreator):
bus = None # the dbus.SystemBus
hal = None # the org.freedesktop.Hal.Manager dbus.Interface
def detect_removable_drives(self):
""" Detect all removable USB storage devices using HAL via D-Bus """
import dbus
self.drives = {}
self.bus = dbus.SystemBus()
hal_obj = self.bus.get_object("org.freedesktop.Hal",
"/org/freedesktop/Hal/Manager")
self.hal = dbus.Interface(hal_obj, "org.freedesktop.Hal.Manager")
devices = []
devices = self.hal.FindDeviceByCapability("storage")
for device in devices:
try:
dev = self._get_device(device)
if dev.GetProperty("storage.bus") == "usb":
self._add_device(dev)
except dbus.exceptions.DBusException:
pass
if not len(self.drives):
raise LiveUSBError(_("Unable to find any USB drives"))
def _add_device(self, dev, parent=None):
model = None
capacity = None
try:
model = dev.GetProperty('storage.model')
capacity = str(dev.GetProperty('storage.removable.media_size'))
except Exception:
pass
self.drives[dev.GetProperty('block.device')] = {
'name' : dev.GetProperty('block.device'),
'model' : model,
'capacity' : capacity
}
def _get_device(self, udi):
""" Return a dbus Interface to a specific HAL device UDI """
import dbus
dev_obj = self.bus.get_object("org.freedesktop.Hal", udi)
return dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
def build_disk(self, progress_thread):
isosize = float(self.isosize)
pattern = "^([0-9]+) bytes .*"
patternCompiled = re.compile(pattern)
pidPattern = "^DDPID=([0-9]+).*"
pidPatternCompiled = re.compile(pidPattern)
drive_infos = self.drives[self.drive]
if drive_infos.has_key("capacity") and drive_infos["capacity"]:
self.log.debug("Iso size = %s" % str(isosize))
self.log.debug("Device capacity = %s " % str(drive_infos['capacity']))
if int(drive_infos['capacity']) < int(isosize):
raise LiveUSBError(_("Selected iso is too large for the selected device"))
dd = '/usr/sbin/liveusb-dd.sh "' + self.iso + '" "' + self.drive + '"'
self.log.debug(dd)
p = subprocess.Popen(dd,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
env={"LC_ALL": "C"})
ppid = p.pid
ddpid = None
self.pids.append(ppid)
# Updating progress bar by parsing /bin/dd output
while True:
line = p.stdout.readline()
if not line:
break
if not ddpid:
pidm = re.findall(pidPatternCompiled, line)
if len(pidm) > 0:
ddpid = int(pidm[0])
self.pids.append(ddpid)
m = re.findall(patternCompiled, line)
if len(m) > 0:
current = float(m[0])
progress = (current/isosize)*100
progress = round(progress, 2)
progress_thread.update(progress)
self.pids.remove(ppid)
self.pids.remove(ddpid)
def terminate(self):
for pid in self.pids:
try:
os.kill(pid, signal.SIGHUP)
self.log.debug("Killed process %d" % pid)
except OSError:
pass
class WindowsLiveUSBCreator(LiveUSBCreator):
def detect_removable_drives(self):
import win32file, win32api, pywintypes, wmi
self.drives = {}
c = wmi.WMI()
for physical_disk in c.Win32_DiskDrive ():
if physical_disk.InterfaceType == "USB":
if len(physical_disk.Capabilities):
for objElem in physical_disk.Capabilities:
if objElem == 7:
self.drives[physical_disk.DeviceID] = {
'name' : physical_disk.DeviceID,
'model' : physical_disk.Model,
'device' : physical_disk.DeviceID,
'capacity': physical_disk.Size
}
break
if not len(self.drives):
raise LiveUSBError(_("There isn't any removable drive available"))
def _get_device(self, drive):
if not self.drives[drive]:
return None
return self.drives[drive]['device']
def build_disk(self, progress_thread):
isosize = float(self.isosize)
pattern = "^([0-9,]+).*"
patternCompiled = re.compile(pattern)
# f = subprocess.Popen(['format', self.drive, '/q', '/y', '/fs:fat32'], shell=True)
# self.log.debug("Formating %s" % self.drive)
# f.wait()
# self.log.debug("Done, exit code: %d" % f.wait())
dd = os.path.join("tools", "dd.exe")
dd += " bs=8M" + " if=\"%s\" of=%s --progress" % (self.iso, self._get_device(self.drive))
self.log.debug(dd)
p = subprocess.Popen(dd,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
ppid = p.pid
self.pids.append(ppid)
# Updating progress bar by parsing /bin/dd output
while True:
line = p.stdout.readline()
if not line:
break
m = re.findall(patternCompiled, line)
if len(m) > 0:
current = float(re.sub(",", "", m[0]))
progress = (current/isosize)*100
progress = round(progress, 2)
progress_thread.update(progress)
self.pids.remove(ppid)
def terminate(self):
""" Terminate any subprocesses that we have spawned """
import win32api, win32con, pywintypes
for pid in self.pids:
try:
handle = win32api.OpenProcess(win32con.PROCESS_TERMINATE,
False, pid)
self.log.debug("Terminating process %s" % pid)
win32api.TerminateProcess(handle, -2)
win32api.CloseHandle(handle)
except pywintypes.error:
pass
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