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|
# Copyright (C) 2008 Canonical Ltd.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3,
# as published by the Free Software Foundation.
#
# 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, see <http://www.gnu.org/licenses/>.
import os
import subprocess, sys
import stat
import shutil
import gobject
import dbus
from dbus.mainloop.glib import DBusGMainLoop
import time
import tempfile
class Logger:
def __init__ (self):
if 'SUDO_USER' in os.environ:
log_file = '%s/.usb-creator.log' % \
os.path.expanduser('~' + os.environ['SUDO_USER'])
else:
log_file = '%s/.usb-creator.log' % \
os.path.expanduser('~')
self.fp = open(log_file, 'a')
self.save = sys.stderr
sys.stderr = self.fp
self.new_line = 1
l = '\n-- Starting up at %s --\n' % time.strftime('%H:%M:%S')
self.fp.write(l)
self.fp.flush()
sys.stdout.write(l)
sys.stdout.flush()
self.pipe = None
def __del__(self):
self.fp.close()
self.stderr = self.save
def write(self, line):
if (self.new_line):
l = '[%s] ' % time.strftime('%H:%M:%S')
self.new_line = 0
l = l + line
else:
l = line
self.fp.write(l)
self.fp.flush()
sys.stdout.write(l)
sys.stdout.flush()
if (line[-1] == '\n'):
self.new_line = 1
def popen(cmd):
process = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, stdin=subprocess.PIPE)
res = process.communicate()
return process, res
def free_space(dev):
try:
stat = os.statvfs(dev)
except:
# This could get called in the event loop as we're shutting down, after
# we've unmounted filesystems.
return 0
return stat.f_bsize * stat.f_bavail
class Backend:
def __init__(self, frontend):
self.devices = {}
self.cds = {}
self.timeouts = {}
self.copy_timeout = None
self.original_size = 0
self.progress_description = ''
self.frontend = frontend
self.logger = Logger()
DBusGMainLoop(set_as_default=True)
self.bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
hal_obj = self.bus.get_object('org.freedesktop.Hal',
'/org/freedesktop/Hal/Manager')
self.hal = dbus.Interface(hal_obj, 'org.freedesktop.Hal.Manager')
def log(self, line):
# It might make more sense to just reassign stdout since we're logging
# everything anyway.
line = str(line) + '\n'
self.logger.write(line)
def set_install_source(self, source):
# TODO: Make more consistent with install_target
self.install_source = source
def set_install_target(self, target):
self.install_target = self.devices[target]
def set_persistence_size(self, persist):
self.persistence_size = persist
def format_device(self, device):
udi = self.hal.FindDeviceStringMatch('block.device', device)
udi = udi[0]
children = self.hal.FindDeviceStringMatch('info.parent', udi)
for child in children:
dev_obj = self.bus.get_object('org.freedesktop.Hal', child)
child = dbus.Interface(dev_obj, 'org.freedesktop.Hal.Device')
dev = str(child.GetProperty('block.device'))
popen(['umount', dev])
popen(['umount', device])
# TODO: This could really use a progress dialog.
res = popen(['parted', '-s', device, 'mklabel', 'msdos'])
if res[0].returncode:
message = 'Unable to create a partition table:\n' + str(res[1][0])
self.log(message)
self.frontend.notify(message)
return
res = popen(['parted', '-s', device, 'mkpartfs', 'primary', 'fat32', '0', '--', '-0'])
if res[0].returncode:
message = 'Unable to format device:\n' + str(res[1][0])
self.log(message)
self.frontend.notify(message)
else:
self.devices.pop(device)
self.frontend.device_removed(device, source=False)
def device_added(self, udi):
self.log('possibly adding: ' + str(udi))
dev_obj = self.bus.get_object("org.freedesktop.Hal", udi)
dev = dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
if dev.PropertyExists('volume.is_disc') and dev.GetProperty('volume.is_disc'):
if not dev.GetProperty('volume.disc.is_blank'):
self.log('got a disc: %s' % dev.GetProperty('volume.label'))
self.bus.add_signal_receiver(self.property_modified,
'PropertyModified', 'org.freedesktop.Hal.Device',
'org.freedesktop.Hal', udi, path_keyword='udi')
# Look for the volume first as it may not have appeared yet when you
# check the parent.
success = False
if dev.PropertyExists('block.is_volume') and dev.GetProperty('block.is_volume'):
if (dev.PropertyExists('storage.bus') and
dev.GetProperty('storage.bus') == 'usb') and \
dev.GetProperty('storage.removable'):
if dev.GetProperty('volume.fstype') == 'vfat':
success = True
else:
self.log('didnt add because not vfat')
else:
p = dev.GetProperty('info.parent')
dev_obj = self.bus.get_object('org.freedesktop.Hal', p)
d = dbus.Interface(dev_obj, 'org.freedesktop.Hal.Device')
if (d.PropertyExists('storage.bus') and
d.GetProperty('storage.bus') == 'usb') and \
d.GetProperty('storage.removable'):
if dev.GetProperty('volume.fstype') == 'vfat':
success = True
if success:
self.add_device(dev)
return
# Look for empty devices.
if (dev.PropertyExists('storage.bus') and
dev.GetProperty('storage.bus') == 'usb') and \
dev.GetProperty('storage.removable'):
if dev.GetProperty('storage.drive_type') != 'disk':
return
children = self.hal.FindDeviceStringMatch('info.parent', udi)
c = False
for child in children:
dev_obj = self.bus.get_object('org.freedesktop.Hal', child)
child = dbus.Interface(dev_obj, 'org.freedesktop.Hal.Device')
if child.GetProperty('block.is_volume') and child.GetProperty('volume.fstype') == 'vfat':
c = True
self.log('children: ' + str(children))
if not c and dev.PropertyExists('storage.removable.media_size'):
self.log('no children or children not vfat')
device = str(dev.GetProperty('block.device'))
self.devices[device] = {
'label' : '',
'fstype' : '',
'uuid' : '',
'mountpoint' : '',
'udi' : udi,
'free' : dev.GetProperty('storage.removable.media_size'),
'capacity' : dev.GetProperty('storage.removable.media_size'),
'device' : device
}
self.frontend.add_dest(device)
def property_modified(self, num_changes, change_list, udi):
dev_obj = self.bus.get_object("org.freedesktop.Hal", udi)
dev = dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
if dev.PropertyExists('volume.is_disc') and dev.GetProperty('volume.is_disc'):
if not dev.GetProperty('volume.is_mounted'):
return
mountpoint = dev.GetProperty('volume.mount_point')
# TODO: Is the most appropriate check?
if mountpoint and os.path.exists('%s/.disk/info' % mountpoint):
add = False
if not self.cds.has_key(udi):
add = True
self.cds[udi] = {
'label' : str(dev.GetProperty('volume.label')),
'uuid' : str(dev.GetProperty('volume.uuid')),
'mountpoint' : mountpoint,
'udi' : udi,
'size' : dev.GetProperty('volume.size'),
'filename' : '',
}
if add:
self.frontend.add_source(udi)
self.frontend.update_all_rows(None)
else:
mountpoint = str(dev.GetProperty('volume.mount_point'))
device = str(dev.GetProperty('block.device'))
self.devices[device] = {
'label' : str(dev.GetProperty('volume.label')).replace(' ', '_'),
'fstype' : str(dev.GetProperty('volume.fstype')),
'uuid' : str(dev.GetProperty('volume.uuid')),
'mountpoint' : mountpoint,
'udi' : str(dev.GetProperty('info.udi')),
'free' : mountpoint and free_space(mountpoint) or 0,
'capacity' : dev.GetProperty('volume.size'),
'device' : device
}
self.frontend.update_dest_row(device)
self.log('prop modified')
self.log('device_udi: %s' % udi)
self.log('num_changes: %d' % num_changes)
for c in change_list:
self.log('change: %s' % str(c[0]))
def device_removed(self, udi):
d = None
for device in self.devices.itervalues():
if device['udi'] == udi:
self.log('removing %s' % udi)
d = device['device']
break
if d:
self.devices.pop(d)
self.frontend.device_removed(d, source=False)
gobject.source_remove(self.timeouts[d])
self.timeouts.pop(d)
else:
# TODO: Ick.
d = None
for device in self.cds.itervalues():
if device['udi'] == udi:
self.log('removing %s' % udi)
d = udi
break
if d:
self.cds.pop(d)
self.frontend.device_removed(d, source=True)
def add_device(self, dev):
# Remove parent device if present as this means there is not an empty
# partition table.
dev_obj = self.bus.get_object("org.freedesktop.Hal",
dev.GetProperty('info.parent'))
device = dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
d = device.GetProperty('block.device')
if self.devices.has_key(d):
self.devices.pop(d)
self.frontend.device_removed(d, source=False)
udi = dev.GetProperty('info.udi')
mountpoint = str(dev.GetProperty('volume.mount_point'))
device = str(dev.GetProperty('block.device'))
self.devices[device] = {
'label' : str(dev.GetProperty('volume.label')).replace(' ', '_'),
'fstype' : str(dev.GetProperty('volume.fstype')),
'uuid' : str(dev.GetProperty('volume.uuid')),
'mountpoint' : mountpoint,
'udi' : str(dev.GetProperty('info.udi')),
'free' : mountpoint and free_space(mountpoint) or 0,
'capacity' : dev.GetProperty('volume.size'),
'device' : device
}
self.bus.add_signal_receiver(self.property_modified,
'PropertyModified', 'org.freedesktop.Hal.Device',
'org.freedesktop.Hal', udi, path_keyword='udi')
self.log('new device:\n%s' % self.devices[device])
self.frontend.add_dest(device)
def update_free(device):
dev = self.devices[device]
mp = dev['mountpoint']
free = dev['free']
if mp:
dev['free'] = free_space(mp)
if free != dev['free']:
self.frontend.update_dest_row(device)
else:
# TODO: Is here really the best place for this?
fstype = dev['fstype']
if not fstype:
return True
dev_obj = self.bus.get_object("org.freedesktop.Hal", str(dev['udi']))
d = dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
if d.GetProperty('volume.mount_point'):
return True
tmpdir = tempfile.mkdtemp()
res = popen(['mount', '-t', fstype, device, tmpdir])
if res[0].returncode:
self.log('Error mounting %s: %s' % (device, res[1]))
popen(['rmdir', tmpdir])
else:
dev['mountpoint'] = tmpdir
return True
self.timeouts[device] = gobject.timeout_add(2000, update_free, device)
def detect_devices(self):
# TODO: Handle devices with empty partition tables.
# CDs
devices = self.hal.FindDeviceByCapability('volume')
for device in devices:
dev_obj = self.bus.get_object('org.freedesktop.Hal', device)
dev = dbus.Interface(dev_obj, 'org.freedesktop.Hal.Device')
if dev.PropertyExists('volume.is_disc') and dev.GetProperty('volume.is_disc'):
if not dev.GetProperty('volume.disc.is_blank'):
self.log('got a disc: %s' % dev.GetProperty('volume.label'))
udi = dev.GetProperty('info.udi')
if not dev.GetProperty('volume.is_mounted'):
self.bus.add_signal_receiver(self.property_modified,
'PropertyModified', 'org.freedesktop.Hal.Device',
'org.freedesktop.Hal', udi, path_keyword='udi')
else:
mountpoint = dev.GetProperty('volume.mount_point')
# TODO: Is the most appropriate check?
if mountpoint and os.path.exists('%s/.disk/info' % mountpoint):
self.cds[udi] = {
'label' : str(dev.GetProperty('volume.label')),
'uuid' : str(dev.GetProperty('volume.uuid')),
'mountpoint' : mountpoint,
'udi' : udi,
'size' : dev.GetProperty('volume.size'),
'filename' : '',
}
self.frontend.add_source(udi)
# USB disks
devices = self.hal.FindDeviceByCapability('storage')
for device in devices:
dev_obj = self.bus.get_object('org.freedesktop.Hal', device)
d = dbus.Interface(dev_obj, 'org.freedesktop.Hal.Device')
if d.GetProperty('storage.drive_type') != 'disk':
continue
if d.GetProperty('storage.bus') == 'usb' and \
d.GetProperty('storage.removable'):
if d.GetProperty('block.is_volume'):
if d.GetProperty('volume.fstype') == 'vfat':
self.add_device(d)
else:
children = self.hal.FindDeviceStringMatch('info.parent', device)
c = False
for child in children:
dev_obj = self.bus.get_object('org.freedesktop.Hal', child)
child = dbus.Interface(dev_obj, 'org.freedesktop.Hal.Device')
if child.GetProperty('block.is_volume'):
if child.GetProperty('volume.fstype') == 'vfat':
c = True
self.add_device(child)
if not c and d.PropertyExists('storage.removable.media_size'):
# Empty partition table.
udi = d.GetProperty('info.udi')
device = str(d.GetProperty('block.device'))
self.devices[device] = {
'label' : '',
'fstype' : '',
'uuid' : '',
'mountpoint' : '',
'udi' : udi,
'free' : d.GetProperty('storage.removable.media_size'),
'capacity' : d.GetProperty('storage.removable.media_size'),
'device' : device
}
self.frontend.add_dest(device)
self.bus.add_signal_receiver(self.device_added,
"DeviceAdded",
"org.freedesktop.Hal.Manager",
"org.freedesktop.Hal",
"/org/freedesktop/Hal/Manager")
self.bus.add_signal_receiver(self.device_removed,
"DeviceRemoved",
"org.freedesktop.Hal.Manager",
"org.freedesktop.Hal",
"/org/freedesktop/Hal/Manager")
def mount_iso(self, filename):
# HAL doesn't support loop mounted filesystems and indeed when manually
# mounted, the device does not appear in d-feet (searching the
# mountpoint). So we have to just manually construct the addition to
# self.devices.
self.log('mounting %s' % filename)
tmpdir = tempfile.mkdtemp()
res = popen(['mount', '-o', 'loop,ro', filename, tmpdir])
if res[0].returncode:
self.log('unable to mount %s to %s' % (filename, tmpdir))
self.log(res[1])
fp = None
try:
fp = open('%s/.disk/info' % tmpdir)
line = fp.readline().strip('\0')
line = ' '.join(line.split(' ')[:2])
size = os.stat(filename).st_size
self.cds[filename] = { 'label' : line,
'uuid' : '',
'udi' : '',
'mountpoint' : '',
'filename' : filename,
'size' : size }
self.frontend.add_source(filename)
success = True
except Exception, e:
self.log('Unable to find %s/.disk/info, not using %s' %
(tmpdir, filename))
self.log(str(e))
success = False
finally:
if fp:
fp.close()
popen(['umount', tmpdir])
popen(['rmdir', tmpdir])
return success
def install_bootloader(self):
# TODO: Needs to be moved into the generic install routine.
# Ugly.
import re
device = self.install_target['device']
udi = self.install_target['udi']
dev_obj = self.bus.get_object("org.freedesktop.Hal", udi)
dev = dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
dev_obj = self.bus.get_object("org.freedesktop.Hal", dev.GetProperty('info.parent'))
dev = dbus.Interface(dev_obj, "org.freedesktop.Hal.Device")
rootdev = dev.GetProperty('block.device')
tmp = device.lstrip(rootdev)
num = re.match('.*([0-9]+)$', tmp).groups()[0]
self.log('Marking partition %s as active.' % num)
if not num:
self.frontend.failed('Unable to determine the partition number.')
self.log('installing the bootloader to %s.' % device)
args = ['syslinux']
if 'USBCREATOR_SAFE' in os.environ:
args.append('-s')
args.append(device)
process = popen(args)[0]
if process.returncode:
self.frontend.failed('Error installing the bootloader.')
popen(['parted', '-s', rootdev, 'set', num, 'boot', 'on'])
def copy_files(self):
tmpdir = ''
def _copy_files(source, target, persist):
# TODO: debate pulling the total_size bit in from ubiquity for more
# accurate progress.
# TODO: Fedora's program shells out to cp and uses another thread that
# checks the free space on the drive and updates the UI accordingly.
# Is this worth replicating?
#cmd = ['cp', '-rav', '%s/.' % source, '%s' % target]
cmd = ['/usr/share/usb-creator/install.py', '-s', '%s/.' % source,
'-t', '%s' % target, '-p', '%d' % persist]
self.log(cmd)
self.pipe = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, universal_newlines=True)
self.watch = gobject.io_add_watch(self.pipe.stdout,
gobject.IO_IN | gobject.IO_HUP,
self.data_available)
#gobject.io_add_watch(self.pipe.stderr,
# gobject.IO_IN | gobject.IO_HUP,
# self.data_available)
# Wait for the process to complete
gobject.child_watch_add(self.pipe.pid, self.on_end)
source = self.cds[self.install_source]
if not source['udi']:
tmpdir = tempfile.mkdtemp()
popen(['mount', '-o', 'loop,ro', self.install_source, tmpdir])
source['mountpoint'] = tmpdir
elif not source['mountpoint']:
tmpdir = tempfile.mkdtemp()
popen(['mount', '-o', 'ro', self.install_source, tmpdir])
source['mountpoint'] = tmpdir
if not self.install_target['mountpoint']:
tmpdir = tempfile.mkdtemp()
popen(['mount', self.install_target['device'], tmpdir])
self.install_target['mountpoint'] = tmpdir
# We don't care about updating the main window anymore.
for timeout in self.timeouts.itervalues():
gobject.source_remove(timeout)
self.timeouts = {}
self.bus.remove_signal_receiver(self.property_modified)
# Remove files we're going to copy.
t = self.install_target['mountpoint']
for obj in os.listdir(self.cds[self.install_source]['mountpoint']):
obj = os.path.join(t, obj)
popen(['rm', '-rf', obj])
popen(['rm', os.path.join(t, 'casper-rw')])
self.original_size = free_space(self.install_target['mountpoint'])
_copy_files(source['mountpoint'], self.install_target['mountpoint'],
self.persistence_size)
def shutdown(self):
self.log('Forcing shutdown of the install process.')
import signal
try:
if self.pipe:
os.kill(self.pipe.pid, signal.SIGTERM)
except OSError:
pass
source = self.cds[self.install_source]
if source['mountpoint'].startswith('/tmp'):
self.log('Unmounting source volume.')
popen(['umount', source['mountpoint']])
popen(['rmdir', source['mountpoint']])
if self.install_target['mountpoint'].startswith('/tmp'):
self.log('Unmounting target volume.')
popen(['umount', self.install_target['mountpoint']])
popen(['rmdir', self.install_target['mountpoint']])
def quit(self):
for dev in self.devices:
mp = self.devices[dev]['mountpoint']
if mp and mp.startswith('/tmp'):
popen(['umount', mp])
popen(['rmdir', mp])
def on_end(self, pid, error_code):
source = self.cds[self.install_source]
if source['mountpoint'].startswith('/tmp'):
self.log('Unmounting source volume.')
popen(['umount', source['mountpoint']])
popen(['rmdir', source['mountpoint']])
if self.install_target['mountpoint'].startswith('/tmp'):
self.log('Unmounting target volume.')
popen(['umount', self.install_target['mountpoint']])
popen(['rmdir', self.install_target['mountpoint']])
self.log('Install command exited with code: %d' % error_code)
if error_code != 0:
self.frontend.failed()
# TODO: Needed?
#gobject.source_remove(self.watch)
self.frontend.finished()
def copy_progress(self):
now = free_space(self.install_target['mountpoint'])
source = float(self.cds[self.install_source]['size'])
source = source + (self.persistence_size * 1024 * 1024)
per = ((self.original_size - now) / source) * 100
self.frontend.progress(per, self.progress_description)
return True
def data_available(self, source, condition):
text = source.readline()
if len(text) > 0:
self.progress_description = text.strip('\n')
if not self.copy_timeout:
self.copy_timeout = gobject.timeout_add(2000, self.copy_progress)
return True
else:
gobject.source_remove(self.copy_timeout)
return False
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