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# Copyright (C) 2007 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
import gobject
import gtk
import sugar.env
import sugar.profile
import os
import popen2
import re
import signal
import sys
from threading import Thread
def start_backup(verbose):
backup_info = sugar.profile.get_trial2_backup()
if not backup_info:
raise RuntimeError("Backup key not defined in Sugar profile")
match = re.match(r'^([^@]*)@([^:]*):(.*)$', backup_info)
if not match:
raise RuntimeError("Backup key '%s' is not user@host:path" % backup_info)
remote_user = match.group(1)
server = match.group(2)
remote_path = match.group(3)
if sugar.env.is_emulator():
local_path = sugar.env.get_profile_path()
else:
local_path = os.path.expanduser('~')
privkey = sugar.env.get_profile_path('owner.key')
ssh_cmd = '/usr/bin/ssh -F /dev/null -o "PasswordAuthentication no" -i "%s" -l "%s"' % (privkey, remote_user)
rsync_cmd = '/usr/bin/rsync -az%s -e \'%s\' %s "%s:%s"' % (verbose and 'P' or '', ssh_cmd, local_path, server, remote_path)
pipe = popen2.Popen3(rsync_cmd, True)
if pipe.poll() != -1:
raise RuntimeError('rsync failed: %s' % pipe.childerr.read())
return pipe
class BackupThread(Thread):
def __init__(self, progress_cb, done_cb):
self._progress_cb = progress_cb
self._done_cb = done_cb
self._errmsg = None
self._pipe = start_backup(True)
Thread.__init__(self, target=self._backup_thread)
def _backup_thread(self):
for line in self._pipe.fromchild:
# After each file, rsync prints a line something like:
# 9350 100% 4.46MB/s 0:00:00 (xfer#9, to-check=7719/7769)
match = re.match(r'.*to-check=(\d+)/(\d+)', line)
if match:
try:
remaining = int(match.group(1))
total = int(match.group(2))
progress = (total - remaining) * 100 / total
gobject.idle_add(self._progress_cb, progress)
except:
pass
if self._pipe.poll() != 0:
self._errmsg = self._pipe.childerr.read()
gobject.idle_add(self._done_cb)
def errmsg(self):
return self._errmsg
def kill(self):
if self._pipe.poll() == -1:
os.kill(self._pipe.pid, signal.SIGINT)
class BackupDialog(gtk.Dialog):
def __init__(self):
gtk.Dialog.__init__(self, flags=gtk.DIALOG_MODAL)
self.set_title('Backup')
self.set_has_separator(False)
label = gtk.Label('Backing up data to school server...')
self.vbox.pack_start(label)
self._progress_bar = gtk.ProgressBar()
self.vbox.pack_start(self._progress_bar)
self.vbox.show_all()
self.add_button(gtk.STOCK_STOP, gtk.RESPONSE_CLOSE)
self._thread = BackupThread(self._progress_cb, self._done_cb)
self._thread.start()
self._timeout = gobject.timeout_add(100, self._timeout_cb)
self.connect('response', self._response_cb)
def _timeout_cb(self):
self._progress_bar.pulse()
return True
def _progress_cb(self, percent):
self._progress_bar.set_fraction(percent / 100.0)
if self._timeout:
gobject.source_remove(self._timeout)
self._timeout = None
return False
def _done_cb(self):
self.response(gtk.RESPONSE_CLOSE)
def _response_cb(self, widget, response):
if self._timeout:
gobject.source_remove(self._timeout)
if self._thread.errmsg():
dlg = gtk.MessageDialog(None, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR,
gtk.BUTTONS_OK,
"Backup failed:\n%s" % self._thread.errmsg())
dlg.run()
elif self._thread.isAlive():
self._thread.kill()
self.destroy()
def backup_gui():
try:
BackupDialog().run()
except RuntimeError, e:
dlg = gtk.MessageDialog(None, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, \
gtk.BUTTONS_OK, 'Backup failed: %s' % str(e))
dlg.run()
def backup_cron():
try:
pipe = start_backup(False)
sys.exit(pipe.wait())
except RuntimeError, e:
sys.stderr.write("Backup failed: %s\n" % str(e))
sys.exit(1)
if __name__ == "__main__":
if os.environ.has_key('DISPLAY'):
gobject.threads_init()
backup_gui()
else:
backup_cron()
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