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374 lines
15 KiB
Python
374 lines
15 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Name: usb.py
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# Purpose: Module to list USB devices and get details under Linux and Windows
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# Authors: Sundar
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# Licence: This file is a part of multibootusb package. You can redistribute it or modify
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# under the terms of GNU General Public License, v.2 or above
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import sys
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import platform
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import os
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import shutil
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import collections
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import ctypes
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def is_block(usb_disk):
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"""
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Function to detect if the USB is block device
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:param usb_disk: USB disk path
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:return: True is devie is block device else False
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"""
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import stat
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if platform.system() == 'Linux':
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if len(usb_disk) != 9:
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return False
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elif platform.system() == 'Windows':
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if len(usb_disk) != 2:
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return False
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else:
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return True
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try:
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mode = os.stat(usb_disk).st_mode
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print(mode)
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print(stat.S_ISBLK(mode))
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except:
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return False
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return stat.S_ISBLK(mode)
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def disk_usage(mount_path):
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"""
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Return disk usage statistics about the given path as a (total, used, free)
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namedtuple. Values are expressed in bytes.
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"""
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# Author: Giampaolo Rodola' <g.rodola [AT] gmail [DOT] com>
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# License: MIT
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_ntuple_diskusage = collections.namedtuple('usage', 'total used free')
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if platform.system() == "Linux":
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st = os.statvfs(mount_path)
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free = st.f_bavail * st.f_frsize
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total = st.f_blocks * st.f_frsize
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used = (st.f_blocks - st.f_bfree) * st.f_frsize
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return _ntuple_diskusage(total, used, free)
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elif platform.system() == "Windows":
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_, total, free = ctypes.c_ulonglong(), ctypes.c_ulonglong(), \
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ctypes.c_ulonglong()
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if sys.version_info >= (3,) or isinstance(mount_path, unicode):
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fun = ctypes.windll.kernel32.GetDiskFreeSpaceExW
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else:
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fun = ctypes.windll.kernel32.GetDiskFreeSpaceExA
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ret = fun(mount_path, ctypes.byref(_), ctypes.byref(total), ctypes.byref(free))
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if ret == 0:
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raise ctypes.WinError()
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used = total.value - free.value
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return _ntuple_diskusage(total.value, used, free.value)
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else:
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raise NotImplementedError("Platform not supported.")
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def list(partition=1):
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"""
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List inserted USB devices.
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:return: USB devices as list.
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"""
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devices = []
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if platform.system() == "Linux":
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from . import pyudev
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import dbus
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try:
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# pyudev is good enough to detect USB devices on modern Linux
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# machines.
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print("Using pyudev for detecting USB drives...")
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context = pyudev.Context()
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for device in context.list_devices(subsystem='block', DEVTYPE='partition',
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ID_FS_USAGE="filesystem", ID_TYPE="disk",
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ID_BUS="usb"):
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if device['ID_BUS'] == "usb" and device['DEVTYPE'] == "partition":
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# print(device['DEVNAME'])
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devices.append(str(device['DEVNAME']))
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except:
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bus = dbus.SystemBus()
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try:
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# You should come here only if your system does'nt have udev installed.
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# We will use udiskd2 for now.
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print("Falling back to Udisks2..")
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ud_manager_obj = bus.get_object(
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'org.freedesktop.UDisks2', '/org/freedesktop/UDisks2')
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ud_manager = dbus.Interface(
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ud_manager_obj, 'org.freedesktop.DBus.ObjectManager')
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for k, v in ud_manager.GetManagedObjects().iteritems():
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drive_info = v.get('org.freedesktop.UDisks2.Block', {})
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if drive_info.get('IdUsage') == "filesystem" and not drive_info.get(
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'HintSystem') and not drive_info.get('ReadOnly'):
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device = drive_info.get('Device')
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device = bytearray(device).replace(
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b'\x00', b'').decode('utf-8')
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devices.append(device)
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except:
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try:
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# You must be using really old distro. Otherwise, the code
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# should not reach here.
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print("Falling back to Udisks1...")
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ud_manager_obj = bus.get_object(
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"org.freedesktop.UDisks", "/org/freedesktop/UDisks")
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ud_manager = dbus.Interface(
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ud_manager_obj, 'org.freedesktop.UDisks')
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for dev in ud_manager.EnumerateDevices():
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device_obj = bus.get_object(
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"org.freedesktop.UDisks", dev)
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device_props = dbus.Interface(
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device_obj, dbus.PROPERTIES_IFACE)
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if device_props.Get('org.freedesktop.UDisks.Device',
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"DriveConnectionInterface") == "usb" and device_props.Get(
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'org.freedesktop.UDisks.Device', "DeviceIsPartition"):
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if device_props.Get('org.freedesktop.UDisks.Device', "DeviceIsMounted"):
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device_file = device_props.Get(
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'org.freedesktop.UDisks.Device', "DeviceFile")
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devices.append(device_file)
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except:
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print("No USB device found...")
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elif platform.system() == "Windows":
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import win32com.client
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oFS = win32com.client.Dispatch("Scripting.FileSystemObject")
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oDrives = oFS.Drives
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for drive in oDrives:
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if drive.DriveType == 1 and drive.IsReady:
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devices.append(drive)
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if devices:
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return devices
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else:
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print("No USB device found...")
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return None
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def details_udev(usb_disk_part):
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"""
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Get details of USB partition using udev
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"""
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if platform.system() == "Linux":
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from . import pyudev
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"""
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Try with PyUdev to get the details of USB disks.
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This is the easiest and reliable method to find USB details.
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Also, it is a standalone package and no dependencies are required.
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"""
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# print "Using PyUdev for detecting USB details..."
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context = pyudev.Context()
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for device in context.list_devices(subsystem='block', DEVTYPE='partition',
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ID_FS_USAGE="filesystem", ID_TYPE="disk",
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ID_BUS="usb"):
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if device['ID_BUS'] == "usb" and device['DEVTYPE'] == "partition":
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if (device['DEVNAME']) == usb_disk_part:
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uuid = str(device['ID_FS_UUID'])
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file_system = str(device['ID_FS_TYPE'])
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try:
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label = str(device['ID_FS_LABEL'])
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except:
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label = "No_Label"
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mount_point = os.popen('findmnt -nr -o target -S %s'
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% usb_disk_part).read().strip()
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# Convert the hex string of space to empty space.
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mount_point = mount_point.replace('\\x20', ' ')
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try:
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vendor = str(device['ID_VENDOR'])
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except:
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vendor = str('No_Vendor')
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try:
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model = str(device['ID_MODEL'])
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except:
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model = str('No_Model')
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if not mount_point == '':
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size_total = shutil.disk_usage(mount_point)[0]
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size_used = shutil.disk_usage(mount_point)[1]
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size_free = shutil.disk_usage(mount_point)[2]
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else:
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size_total = str('No_Mount')
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size_used = str('No_Mount')
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size_free = str('No_Mount')
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mount_point = str('No_Mount')
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return {'uuid': uuid, 'file_system': file_system, 'label': label, 'mount_point': mount_point,
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'size_total': size_total, 'size_used': size_used, 'size_free': size_free,
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'vendor': vendor, 'model': model}
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def details_udisks2(usb_disk_part):
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"""
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Get details of USB disk detail.
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usb_disk_part: It is the partition of an USB removable disk.
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"""
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import dbus
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bus = dbus.SystemBus()
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bd = bus.get_object('org.freedesktop.UDisks2', '/org/freedesktop/UDisks2/block_devices%s'%usb_disk_part[4:])
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device = bd.Get('org.freedesktop.UDisks2.Block', 'Device', dbus_interface='org.freedesktop.DBus.Properties')
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device = bytearray(device).replace(b'\x00', b'').decode('utf-8')
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uuid = bd.Get('org.freedesktop.UDisks2.Block', 'IdUUID', dbus_interface='org.freedesktop.DBus.Properties')
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file_system = bd.Get('org.freedesktop.UDisks2.Block', 'IdType', dbus_interface='org.freedesktop.DBus.Properties')
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mount_point = bd.Get('org.freedesktop.UDisks2.Filesystem', 'MountPoints', dbus_interface='org.freedesktop.DBus.Properties')
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if mount_point:
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# mount_point = str(bytearray(mount_point[0]).decode('utf-8').replace(b'\x00', b''))
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mount_point = bytearray(mount_point[0]).replace(b'\x00', b'').decode('utf-8')
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else:
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mount_point = "No_Mount"
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try:
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label = bd.Get('org.freedesktop.UDisks2.Block', 'IdLabel', dbus_interface='org.freedesktop.DBus.Properties')
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except:
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label = "No_Label"
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usb_drive_id = (bd.Get('org.freedesktop.UDisks2.Block', 'Drive', dbus_interface='org.freedesktop.DBus.Properties'))
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bd1 = bus.get_object('org.freedesktop.UDisks2', usb_drive_id)
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try:
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vendor = bd1.Get('org.freedesktop.UDisks2.Drive', 'Vendor', dbus_interface='org.freedesktop.DBus.Properties')
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except:
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vendor = str('No_Vendor')
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try:
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model = bd1.Get('org.freedesktop.UDisks2.Drive', 'Model', dbus_interface='org.freedesktop.DBus.Properties')
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except:
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model = str('No_Model')
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if not mount_point == "No_Mount":
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size_total = shutil.disk_usage(mount_point)[0]
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size_used = shutil.disk_usage(mount_point)[1]
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size_free = shutil.disk_usage(mount_point)[2]
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else:
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size_total = str('No_Mount')
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size_used = str('No_Mount')
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size_free = str('No_Mount')
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return {'uuid': uuid, 'file_system': file_system, 'label': label, 'mount_point': mount_point,
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'size_total': size_total, 'size_used': size_used, 'size_free': size_free,
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'vendor': vendor, 'model': model}
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def bytes2human(n):
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"""
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Convert the size to human readable format
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Authored by 'Giampaolo Rodolà' and original link is:-
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http://code.activestate.com/recipes/577972-disk-usage/
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"""
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try:
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n = int(n)
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except:
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return 'Unknown'
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symbols = ('K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y')
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prefix = {}
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for i, s in enumerate(symbols):
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prefix[s] = 1 << (i + 1) * 10
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for s in reversed(symbols):
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if n >= prefix[s]:
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value = float(n) / prefix[s]
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return '%.1f%s' % (value, s)
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return "%sB" % n
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def win_disk_details(disk_drive):
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"""
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Populate and get details of an USB disk under windows. Minimum required windows version is Vista.
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:param disk_drive: USB disk like 'G:'
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:return: See the details(usb_disk_part) function for return values.
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"""
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import win32com.client
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import wmi
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import pythoncom
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pythoncom.CoInitialize()
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vendor = 'Not_Found'
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model = 'Not_Found'
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c = wmi.WMI()
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selected_usb_part = str(disk_drive)
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oFS = win32com.client.Dispatch("Scripting.FileSystemObject")
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d = oFS.GetDrive(oFS.GetDriveName(oFS.GetAbsolutePathName(selected_usb_part)))
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selected_usb_device = d.DriveLetter
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label = (d.VolumeName).strip()
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if not label.strip():
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label = "No_label"
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mount_point = selected_usb_device + ":\\"
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serno = "%X" % (int(d.SerialNumber) & 0xFFFFFFFF)
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uuid = serno[:4] + '-' + serno[4:]
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file_system = (d.FileSystem).strip()
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size_total = shutil.disk_usage(mount_point)[0]
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size_used = shutil.disk_usage(mount_point)[1]
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size_free = shutil.disk_usage(mount_point)[2]
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for physical_disk in c.Win32_DiskDrive(InterfaceType="USB"):
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for partition in physical_disk.associators("Win32_DiskDriveToDiskPartition"):
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for logical_disk in partition.associators("Win32_LogicalDiskToPartition"):
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if logical_disk.Caption == disk_drive:
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vendor = (physical_disk.PNPDeviceID.split('&VEN_'))[1].split('&PROD_')[0]
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model = (physical_disk.PNPDeviceID.split('&PROD_'))[1].split('&REV_')[0]
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return {'uuid': uuid, 'file_system': file_system, 'label': label, 'mount_point': mount_point,
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'size_total': size_total, 'size_used': size_used, 'size_free': size_free,
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'vendor': vendor, 'model': model}
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def details(usb_disk_part):
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"""
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Populate and get details of an USB disk.
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:param usb_disk_part: USB disk. Example.. "/dev/sdb1" on Linux and "D:\" on Windows.
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:return: label == > returns name/label of an inserted USB device.
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mount_point == > returns mount path of an inserted USB device.
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uuid == > returns uuid of an inserted USB device.
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file_system == > returns type of filesystem of an inserted USB device.
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device == > returns device path of an inserted USB device.
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size_total == > returns total size in MB/GB of an inserted USB device.
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size_free == > returns free size in MB/GB of an inserted USB device.
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size_used == > returns used size in MB/GB of an inserted USB device.
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vendor == > returns the name of the manufacturer.
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model == > returns the model name of the USB.
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"""
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if platform.system() == 'Linux':
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try:
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udev = details_udev(usb_disk_part)
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uuid = udev['uuid']
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file_system = udev['file_system']
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label = udev['label']
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mount_point = udev['mount_point']
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size_total = udev['size_total']
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size_used = udev['size_used']
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size_free = udev['size_free']
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vendor = udev['vendor']
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model = udev['model']
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except:
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udisks2 = details_udisks2(usb_disk_part)
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uuid = udisks2['uuid']
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file_system = udisks2['file_system']
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label = udisks2['label']
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mount_point = udisks2['mount_point']
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size_total = udisks2['size_total']
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size_used = udisks2['size_used']
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size_free = udisks2['size_free']
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vendor = udisks2['vendor']
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model = udisks2['model']
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elif platform.system() == 'Windows':
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win_details = win_disk_details(usb_disk_part)
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uuid = win_details['uuid']
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file_system = win_details['file_system']
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label = win_details['label']
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mount_point = win_details['mount_point']
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size_total = win_details['size_total']
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size_used = win_details['size_used']
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size_free = win_details['size_free']
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vendor = win_details['vendor']
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model = win_details['model']
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return {'uuid': uuid, 'file_system': file_system, 'label': label, 'mount_point': mount_point,
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'size_total': size_total, 'size_used': size_used, 'size_free': size_free,
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'vendor': vendor, 'model': model}
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if __name__ == '__main__':
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usb_devices = list()
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if usb_devices is not None:
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for dev in usb_devices:
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print(details(dev))
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