Use call through DBUS for operation needing root privileges

1 files changed, 140 insertions, 0 deletions

diff --git a/lib/raw_write.py b/lib/raw_write.py
new file mode 100755
index 0000000..92261f8
--- /dev/null
+++ b/lib/raw_write.py
@@ -0,0 +1,140 @@
+#coding:utf-8
+
+#!/usr/bin/python3
+#
+#  Copyright (c) 2007-2009 Canonical Ltd.
+#
+#  Author: Oliver Grawert <ogra@ubuntu.com>
+#
+#  Modifications 2013 from papoteur <papoteur@mageialinux-online.org>
+#  and Geiger David <david.david@mageialinux-online.org>
+#
+#  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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+
+###########
+# imports #
+###########
+#import locale
+import os
+import io
+import gettext
+from gettext import gettext as _
+import pydbus
+       
+class Dumper(object):
+
+    def do_write(self,source,dev):
+        target = dev.split('(')[1].split(')')[0]
+        self.do_umount(target)
+        # Writing step
+        #Dump mode
+        self.returncode=0
+        b=os.path.getsize(source)
+        self.operation=True
+        bs=4096*128
+        try:
+            ifc=io.open(source, "rb",1)
+        except:
+             message = _('Reading error.')+ source
+             self.logger(message)
+             return False,message
+        else:
+            try:
+                ofc= io.open(target, 'wb',0)
+            except:
+                 message = _("You don't have permission to write to the device {}").format(target)
+                 self.logger(message)
+                 return False,message
+            else:
+                self.progress.setLabel(_('Writing {source} to {target}').format(source=source.split('/')[-1],target=target.split('/')[-1])
+                self.logger(_('Executing copy from ')+source+_(' to ')+target)
+                steps=list(range(0, b+1, int(b/100)))
+                steps.append(b)
+                indice=1
+                written=0
+                ncuts=int(b/bs)
+                while ncuts <= 100:
+                    bs=int(bs/2)
+                    ncuts=int(b/bs)
+                for i in range(0,int(ncuts)+1):
+                    try:
+                        buf=ifc.read(bs)
+                    except:
+                        message = _("Reading error.")
+                        self.logger(message)
+                        return False, message
+                    try:
+                        ofc.write(buf)
+                    except:
+                        message = _("Writing error.")
+                        self.logger(message)
+                        return False, message
+                    written+=len(buf)
+                    if written > steps[indice]:
+                        if indice%1==0:
+                            self.logger(_('Wrote: ')+str(indice)+'% '+str(written)+' bytes')
+                        self.sendProgress(indice)
+                        self.dialog.pollEvent()
+                        indice +=1
+                        try:
+                            os.fsync(ofc)
+                        except:
+                           message = _("Writing error.")
+                           self.logger(message)
+                           return False,message
+                self.progress.setValue(100)
+                self.logger(_('Image ')+source.split('/')[-1]+_(' successfully written to ')+target)
+                self.logger(_('Bytes written: ')+str(written))
+                try:
+                    ofc.close()
+                except:
+                   message = _("Writing error.")
+                   self.logger(message)
+            ifc.close()
+            return True, _("Succes")
+
+    def do_umount(self, target):
+        try:
+            lines = [line.strip("\n").split(" ") for line in open ("/etc/mtab", "r").readlines()]
+            mounts = [mount for mount in lines if mount[0].startswith(target)]
+        except:
+             message = _('Could not read mtab !')
+             self.logger(message)
+             return False, message
+        if mounts:
+            self.logger(_('Unmounting all partitions of ')+target+':')
+        for mount in mounts:
+            self.logger(_('Trying to unmount ')+mount[0]+'...')
+            try:
+                retcode = call('umount '+mount[0], shell=True)
+                if retcode == 32:
+                    message = _('Partition %s is busy')%mount[0]
+               elif retcode< 0:
+                    message = _('Error, umount ')+mount[0]+_(' was terminated by signal ')+str(retcode)
+                elif retcode == 0:
+                        message=_('{} successfully unmounted').format(mount[0])
+                else:
+                        message = _('Error, umount {} returned ').format(str(retcode))
+            except OSError as e:
+                message = _('Execution failed: {}').format(str(e))
+            return retcode, message
+
+    def __init__(self):
+        gettext.bindtextdomain(APP, DIR)
+        gettext.textdomain(APP)
+
+        # Operation running
+        self.operation=False
+