Merge lp:~vorlon/usb-creator/genisoimage-to-xorriso into lp:usb-creator

[Steve Langasek]

We want to migrate away from genisoimage to xorriso.

This should not be merged until 21.10 opens.

=== modified file 'debian/changelog'
--- debian/changelog	2021-04-02 15:52:52 +0000
+++ debian/changelog	2021-04-16 23:24:37 +0000
@@ -1,3 +1,9 @@
+usb-creator (0.3.10) UNRELEASED; urgency=medium
+
+  * Port from genisoimage (isoinfo) to xorriso (osirrox)
+
+ -- Steve Langasek <[e-mail]>  Fri, 16 Apr 2021 16:23:06 -0700
+
 usb-creator (0.3.9) hirsute; urgency=medium
 
   * debian/control: Add genisoimage to Depends as isoinfo is needed to look
 
=== modified file 'debian/control'
--- debian/control	2021-04-02 15:52:42 +0000
+++ debian/control	2021-04-16 23:24:37 +0000
@@ -17,7 +17,7 @@
 Package: usb-creator-common
 Architecture: all
 Depends: ${misc:Depends}, ${python3:Depends}, python3-dbus,
- gir1.2-udisks-2.0, udisks2, genisoimage, python3-debian
+ gir1.2-udisks-2.0, udisks2, xorriso, python3-debian
 Description: create a startup disk using a CD or disc image (common files)
  Startup Disk Creator converts a USB key or SD card into a volume from which you
  can start up and run Ubuntu. You can also store files and settings in any space
 
=== modified file 'usbcreator/backends/udisks/backend.py'
--- usbcreator/backends/udisks/backend.py	2019-06-30 14:23:02 +0000
+++ usbcreator/backends/udisks/backend.py	2021-04-16 23:24:37 +0000
@@ -1,5 +1,8 @@
 import dbus
 import logging
+import os
+import subprocess
+import tempfile
 from dbus.mainloop.glib import DBusGMainLoop, threads_init
 import gi
 gi.require_version('UDisks', '2.0')
@@ -145,15 +148,16 @@
 
     # Device manipulation functions.
     def _is_casper_cd(self, filename):
+        tmpfile = tempfile.mkstemp()[1]
         for search in ['/.disk/info', '/.disk/mini-info']:
-            cmd = ['isoinfo', '-J', '-i', filename, '-x', search]
-            try:
-                output = misc.popen(cmd, stderr=None)
-                if output:
-                    return output
-            except misc.USBCreatorProcessException:
-                # TODO evand 2009-07-26: Error dialog.
-                logging.error('Could not extract .disk/info.')
+            cmd = ['osirrox', '-dev', filename, '-extract', search, tmpfile]
+            subprocess.run(cmd, stderr=None, stdout=None)
+            if os.stat(tmpfile).st_size > 0:
+                f = open(tmpfile)
+                output = f.read()
+                f.close()
+                os.unlink(tmpfile)
+                return output
         return None
 
     def install(self, source, target, allow_system_internal=False):