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421 lines
15 KiB
Python
421 lines
15 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*
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# Name: gen.py
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# Purpose: This 'general' module contain many functions required to be called at many places
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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 logging
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import sys
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import os
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import platform
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import shutil
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import string
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import zipfile
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import re
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import ctypes
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from . import config
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from .osdriver import get_physical_disk_number, wmi_get_drive_info, \
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log, resource_path, multibootusb_host_dir
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def scripts_dir_path():
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return os.path.dirname(os.path.realpath(__file__))
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def print_version():
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"""
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Simple log the version number of the multibootusb application
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:return:
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"""
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log('multibootusb version: ' + mbusb_version())
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def quote(text):
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"""
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Function to quote the input word or sentence.
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:param text: Any word or sentence.
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:return: Quoted text or sentence. If already quoted the same text is returned.
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"""
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if not is_quoted(text):
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return '"' + text + '"'
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else:
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return text
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def is_quoted(text):
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"""
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Function to check if word is quoted.
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:param text: Any word or sentence with or without quote.
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:return: True if text is quoted else False.
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"""
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return bool(text.startswith("\"") and text.endswith("\""))
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def has_digit(word):
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"""
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Useful function to detect if input word contain digit.
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:param word: Any alphanumeric word.
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:return: True if the word has a digit else False.
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"""
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return any(char.isdigit() for char in word)
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def sys_64bits():
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"""
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Detect if the host system is 64 bit.
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:return: True if system is 64 bit.
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"""
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return sys.maxsize > 2**32
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def iso_cfg_ext_dir():
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"""
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Function to return the path to ISO configuration file extraction directory.
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:return: Path to directory where ISO config files will be extracted.
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"""
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return os.path.join(multibootusb_host_dir(), 'iso_cfg_ext_dir')
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def clean_iso_cfg_ext_dir(iso_cfg_ext_dir):
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"""
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Clean old ISO config files extracted by previous use of multibootusb.
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:param iso_cfg_ext_dir: Path to config extract directory.
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:return:
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"""
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if os.path.exists(iso_cfg_ext_dir):
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for f in os.listdir(iso_cfg_ext_dir):
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fullpath = os.path.join(iso_cfg_ext_dir, f)
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if os.path.isdir(fullpath):
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shutil.rmtree(fullpath)
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else:
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os.remove(fullpath)
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else:
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log('iso_cfg_ext_dir directory does not exist.')
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def copy_mbusb_dir_usb(usb_disk):
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"""
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Copy the multibootusb directory to USB mount path.
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:param usb_mount_path: Path to USB mount.
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:return:
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"""
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# from .iso import iso_size
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from .usb import details, PartitionNotMounted
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try:
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usb_details = details(usb_disk)
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except PartitionNotMounted as e:
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log(str(e))
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return False
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usb_mount_path = usb_details['mount_point']
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result = ''
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if not os.path.exists(os.path.join(usb_mount_path, "multibootusb")):
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try:
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log('Copying multibootusb directory to ' + usb_mount_path)
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shutil.copytree(resource_path(os.path.join("data", "multibootusb")), os.path.join(usb_mount_path, "multibootusb"))
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result = True
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except:
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log('multibootusb directory could not be copied to ' + usb_mount_path)
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result = False
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else:
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log('multibootusb directory already exists. Not copying.')
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if not os.path.exists(os.path.join(usb_mount_path, 'EFI', 'BOOT', 'multibootusb_grub2.txt')):
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if not os.path.exists(os.path.join(usb_mount_path, 'EFI', 'BOOT')):
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log('EFI/BOOT directory does not exist. Creating new.')
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os.makedirs(os.path.join(usb_mount_path, 'EFI', 'BOOT'), exist_ok=True)
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if os.path.exists(os.path.join(usb_mount_path, 'EFI')):
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shutil.rmtree(os.path.join(usb_mount_path, 'EFI'))
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try:
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log('Copying EFI directory to ' + usb_mount_path)
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shutil.copytree(resource_path(os.path.join("data", "EFI")), os.path.join(usb_mount_path, "EFI"))
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result = True
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except Exception as e:
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log(e)
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result = False
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else:
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log('EFI directory already exist. Not copying.')
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'''
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# For backward compatibility
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if not os.path.exists(os.path.join(usb_mount_path, 'EFI', 'BOOT', 'bootx64-gpt.efi')):
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shutil.copy(resource_path(os.path.join('data', 'EFI', 'BOOT', 'bootx64-gpt.efi')),
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os.path.join(usb_mount_path, 'EFI', 'BOOT', 'bootx64-gpt.efi'))
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if not os.path.exists(os.path.join(usb_mount_path, 'EFI', 'BOOT', 'bootx64-msdos.efi')):
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shutil.copy(resource_path(os.path.join('data', 'EFI', 'BOOT', 'bootx64-msdos.efi')),
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os.path.join(usb_mount_path, 'EFI', 'BOOT', 'bootx64-msdos.efi'))
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if not os.path.exists(os.path.join(usb_mount_path, 'multibootusb', 'grub', 'core-gpt.img')):
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shutil.copy(resource_path(os.path.join('data', 'multibootusb', 'grub', 'core-gpt.img')),
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os.path.join(usb_mount_path, 'multibootusb', 'grub', 'core-gpt.img'))
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if not os.path.exists(os.path.join(usb_mount_path, 'multibootusb', 'grub', 'core-msdos.img')):
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shutil.copy(resource_path(os.path.join('data', 'multibootusb', 'grub', 'core-msdos.img')),
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os.path.join(usb_mount_path, 'multibootusb', 'grub', 'core-msdos.img'))
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if not os.path.exists(os.path.join(usb_mount_path, 'multibootusb', 'grub', 'x86_64-efi')):
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log("New EFI modules does not exist. Copying now.")
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shutil.copytree(resource_path(os.path.join('data', 'multibootusb', 'grub', 'x86_64-efi')),
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os.path.join(usb_mount_path, 'multibootusb', 'grub', 'x86_64-efi'))
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log("Replacing gpt efi binary with latest one.")
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os.remove(os.path.join(usb_mount_path, 'EFI', 'BOOT', 'bootx64-gpt.efi'))
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shutil.copy(resource_path(os.path.join('data', 'EFI', 'BOOT', 'bootx64-gpt.efi')),
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os.path.join(usb_mount_path, 'EFI', 'BOOT', 'bootx64-gpt.efi'))
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'''
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# Warn users about older version
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if not os.path.exists(os.path.join(usb_mount_path, 'multibootusb', 'grub', 'x86_64-efi')):
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log("You have created live usb using old version of multibootusb.")
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log("Please remove EFI and multibootusb directory and reinstall distros again.")
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# Ensue that we have iso directory. Implemented from version 9.0.1
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if not os.path.exists(os.path.join(usb_mount_path, 'multibootusb', 'iso')):
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os.makedirs(os.path.join(usb_mount_path, 'multibootusb', 'iso'))
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# Update the menu files from resource path to USB directory.
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try:
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with zipfile.ZipFile(resource_path(os.path.join('data', 'multibootusb', 'grub', 'menus.zip')), "r") as z:
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z.extractall(os.path.join(usb_mount_path, 'multibootusb', 'grub', 'menus'))
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except:
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log('Unable to extract menu files to USB disk.')
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return result
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def read_input_yes():
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"""
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List option and read user input
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:return: True if user selected yes or else false
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"""
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yes_list = ['Y', 'y', 'Yes', 'yes', 'YES']
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no_list = ['N', 'n', 'No', 'no', 'NO']
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response = input("Please enter the option listed above : ")
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if response in yes_list:
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return True
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elif response in no_list:
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return False
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def strings(filename, _min=4):
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with open(filename, errors="ignore") as f:
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result = ""
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for c in f.read():
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if c in string.printable:
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result += c
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continue
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if len(result) >= _min:
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yield result
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result = ""
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if len(result) >= _min: # catch result at EOF
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yield result
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def size_not_enough(iso_link, usb_disk):
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from .iso import iso_size
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from .usb import details, PartitionNotMounted
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isoSize = iso_size(iso_link)
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try:
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usb_details = details(usb_disk)
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except PartitionNotMounted as e:
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log(str(e))
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return False
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usb_size = usb_details['size_free']
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return bool(isoSize > usb_size)
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def mbusb_version():
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version = open(resource_path(os.path.join("data", "version.txt")), 'r').read().strip()
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return version
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def check_text_in_file(file_path, text):
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"""
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Helper function to check if a text exist in a file.
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:param file_path: Path to file
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:param text: Text to be searched
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:return: True if found else False
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"""
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if not os.path.exists(file_path):
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return False
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else:
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with open(file_path) as data_file:
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return any(text in line for line in data_file)
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def prepare_mbusb_host_dir():
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"""
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Prepare multibootusb host directory and extract data files for use.
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:return:
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"""
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home = multibootusb_host_dir()
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if not os.path.exists(home):
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os.makedirs(home)
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else:
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log("Cleaning old multibootusb directory...")
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clean_iso_cfg_ext_dir(os.path.join(home, "iso_cfg_ext_dir"))
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#shutil.rmtree(home)
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#os.makedirs(home)
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if not os.path.exists(os.path.join(home, "preference")):
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os.makedirs(os.path.join(home, "preference"))
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if not os.path.exists(os.path.join(home, "iso_cfg_ext_dir")):
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os.makedirs(os.path.join(home, "iso_cfg_ext_dir"))
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if os.path.exists(os.path.join(home, "syslinux", "bin", "syslinux4")):
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log("Syslinux exist in multibootusb directory...")
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else:
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log("Extracting syslinux to multibootusb directory...")
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if platform.system() == "Linux":
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if sys_64bits() is True:
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log('Host OS is 64 bit...')
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log("Extracting syslinux 64 bit...")
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# log(resource_path(os.path.join("data", "tools", "syslinux", "syslinux_linux_64.zip")))
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with zipfile.ZipFile(resource_path(os.path.join("data", "tools", "syslinux", "syslinux_linux_64.zip")), "r") as z:
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z.extractall(home)
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else:
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log("Extracting syslinux 32 bit...")
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with zipfile.ZipFile(resource_path(os.path.join("data", "tools", "syslinux", "syslinux_linux.zip")), "r") as z:
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z.extractall(home)
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else:
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with zipfile.ZipFile(resource_path(os.path.join("data", "tools", "syslinux", "syslinux_windows.zip")), "r") as z:
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z.extractall(home)
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log("Extracting syslinux modules to multibootusb directory...")
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with zipfile.ZipFile(resource_path(os.path.join("data", "tools", "syslinux", "syslinux_modules.zip")), "r") as z:
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z.extractall(os.path.join(home, "syslinux"))
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if os.listdir(os.path.join(home, "iso_cfg_ext_dir")):
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log(os.listdir(os.path.join(home, "iso_cfg_ext_dir")))
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log("iso extract directory is not empty.")
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log("Removing junk files...")
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for files in os.listdir(os.path.join(home, "iso_cfg_ext_dir")):
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if os.path.isdir(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files))):
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log(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)))
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os.chmod(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)), 0o777)
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shutil.rmtree(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)))
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else:
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try:
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log(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)))
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os.chmod(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)), 0o777)
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os.unlink(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)))
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os.remove(os.path.join(os.path.join(home, "iso_cfg_ext_dir", files)))
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except OSError:
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log("Can't remove the file. Skipping it.")
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def grub_efi_exist(grub_efi_path):
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"""
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Detect efi present in USB disk is copied by multibootusb.
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:param isolinux_path: Path to "grub efi image"
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:return: True if yes else False
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"""
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from . import iso
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if grub_efi_path is not None:
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sl = list(iso.strings(grub_efi_path))
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for strin in sl:
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if re.search(r'multibootusb', strin, re.I):
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return True
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return False
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def process_exist(process_name):
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"""
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Detect if process exist/ running and kill it.
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:param process_name: process name to check
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:return: True if processis killed else False
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"""
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if platform.system() == 'Windows':
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import signal
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import wmi
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c = wmi.WMI()
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for process in c.Win32_Process():
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if process_name in process.Name:
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log(process_name + ' exist...')
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log(str(process.ProcessId) + ' ' + str(process.Name))
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log("Having Windows explorer won't allow dd.exe to write ISO image properly."
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"\nKilling the process..")
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try:
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os.kill(process.ProcessId, signal.SIGTERM)
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return True
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except:
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log('Unable to kill process ' + str(process.ProcessId))
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return False
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def write_to_file(filepath, text):
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"""
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Simple function to write a text file
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:param filepath: Path to file
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:param text: Text to be written on to file
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:return:
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"""
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with open(filepath, 'w') as f:
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f.write(text.strip())
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class MemoryCheck():
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"""
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Cross platform way to checks memory of a given system. Works on Linux and Windows.
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psutil is a good option to get memory info. But version 5.0 and only will work.
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Source: https://doeidoei.wordpress.com/2009/03/22/python-tip-3-checking-available-ram-with-python/
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Call this class like this:
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mem_info = memoryCheck()
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print(mem_info.value)
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"""
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def __init__(self):
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if platform.system() == 'Linux':
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self.value = self.linuxRam()
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elif platform.system() == 'Windows':
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self.value = self.windowsRam()
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else:
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log("MemoryCheck Class will only work on Linux and Windows.")
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def windowsRam(self):
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"""
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Uses Windows API to check RAM
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"""
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kernel32 = ctypes.windll.kernel32
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c_ulong = ctypes.c_ulong
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class MEMORYSTATUS(ctypes.Structure):
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_fields_ = [
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("dwLength", c_ulong),
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("dwMemoryLoad", c_ulong),
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("dwTotalPhys", c_ulong),
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("dwAvailPhys", c_ulong),
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("dwTotalPageFile", c_ulong),
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("dwAvailPageFile", c_ulong),
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("dwTotalVirtual", c_ulong),
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("dwAvailVirtual", c_ulong)
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]
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memoryStatus = MEMORYSTATUS()
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memoryStatus.dwLength = ctypes.sizeof(MEMORYSTATUS)
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kernel32.GlobalMemoryStatus(ctypes.byref(memoryStatus))
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return int(memoryStatus.dwTotalPhys / 1024 ** 2)
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def linuxRam(self):
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"""
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Returns the RAM of a Linux system
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"""
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totalMemory = os.popen("free -m").readlines()[1].split()[1]
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return int(totalMemory)
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if __name__ == '__main__':
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log(quote("""Test-string"""))
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log(has_digit("test-string-with-01-digit"))
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log(sys_64bits())
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log(multibootusb_host_dir())
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log(iso_cfg_ext_dir())
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strings_test = strings('../../text-stings.bin')
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log(strings_test)
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