#!/usr/bin/python
# -*- coding: iso-8859-1 -*-

# iso_mount - Roger Heathcote - iso_mount@technicalbloke.com 2009
# Released under GPL3 - http://www.gnu.org/licenses/gpl.txt
# Primarily for use with nautilus actions on Ubuntu 9.04, takes absolute path to ISO file and mounts as loopback device
# Default mountpoint folder specified here...

default_mount_folder = "/media"

# How to manually configure Nautilus actions...
    # Make sure file is executable
    # Create link to file in /usr/local/bin
    # System/Preferences/Nautilus Actions/Add
    # Label: Mount
    # Tooltip: Mount this ISO
    # Add
    # Action, Path: gksudo iso_mount
    # Action, Parameter: %M
    # Condition: Appear if file matches: *.iso   [ ] Match Case   i.e. case insensitive
    # Condition: Only files

import os, os.path, sys


if False: # Log stdout to file, false by default

    so = se = open("/var/log/iso_mount.log", 'w', 0)

    # re-open stdout without buffering
    sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)

    # redirect stdout and stderr to the log file opened above
    os.dup2(so.fileno(), sys.stdout.fileno())
    os.dup2(se.fileno(), sys.stderr.fileno())



if os.geteuid() != 0:                                                              # Ensure user is root
    sys.exit( "Only root can do that..." )

source_file_folder, source_file_name = os.path.split( sys.argv[1] )
assert source_file_name, source_file_folder
mount_folder_name = default_mount_folder + os.sep + source_file_name

if os.path.exists( mount_folder_name ):                                            # If mountpoint already exists... 
    assert( os.path.isdir( mount_folder_name ) )                                   # Ensure it is a folder
    if os.listdir (mount_folder_name):                                             # Ensure it is empty
        sys.exit( "Fail: Mountpoint folder not empty!" )

else:
    if not os.mkdir( mount_folder_name ):                                          # Create mountpoint...
        sys.exit( "Failed to create mountpoint:", mount_folder_name )

print "Issuing command:", 'mount -o loop "%s" "%s"' % (sys.argv[1], mount_folder_name)
if os.system( 'mount -o loop "%s" "%s"' % (sys.argv[1], mount_folder_name) ):      # Attempt mount, fail if err code non zero
    sys.exit( "Fail: mount command failed" )