352 lines
9.1 KiB
Python
352 lines
9.1 KiB
Python
# -*- coding: utf-8 -*-
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import os
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import json
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import uuid
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import hashlib
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import argparse
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import configparser
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import ntplib
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import requests
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from datetime import datetime
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## Utility Functions ##
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def logs(f):
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def wrapper(*args, **kwargs):
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try:
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return f(*args, **kwargs)
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except Exception as err:
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print(err)
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return ''
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return wrapper
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@logs
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def exec_cmd(cmd):
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return os.popen(cmd).read()
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@logs
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def exec_cmd_erase(cmd):
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print(cmd)
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return ''
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# return os.popen(cmd).read()
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def gen_code():
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uid = str(uuid.uuid4()).encode('utf-8')
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return hashlib.shake_256(uid).hexdigest(3)
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## End Utility functions ##
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SNAPSHOT_BASE = {
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'timestamp': str(datetime.now()),
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'type': 'Snapshot',
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'uuid': str(uuid.uuid4()),
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'code': gen_code(),
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'software': "EreuseWorkbench",
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'version': "0.0.1",
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'data': {},
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'erase': []
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}
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## Command Functions ##
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## Erase Functions ##
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## Xavier Functions ##
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def erase_basic(disk):
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"""
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Basic Erasure
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https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=917935
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Settings for basic data erasure using shred Linux command.
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A software-based fast non-100%-secured way of erasing data storage.
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Performs 1 pass overwriting one round using all zeros.
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Compliant with NIST SP-800-8y8.
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In settings appear:
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WB_ERASE = EraseBasic
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WB_ERASE_STEPS = 1
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WB_ERASE_LEADING_ZEROS = False
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"""
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cmd = f'shred -vn 1 /dev/{disk}'
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return [exec_cmd_erase(cmd)]
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def erase_baseline(disk):
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"""
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Baseline Secure Erasure
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Settings for advanced data erasure using badblocks Linux software.
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A secured-way of erasing data storages, erase hidden areas,
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checking the erase sector by sector.
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Performs 1 pass overwriting each sector with zeros and a final verification.
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Compliant with HMG Infosec Standard 5 Baseline.
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In settings appear:
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WB_ERASE = EraseSectors
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WB_ERASE_STEPS = 1
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WB_ERASE_LEADING_ZEROS = True
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WB_ERASE_1_METHOD = EraseBasic
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WB_ERASE_1_STEP_TYPE = 0
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WB_ERASE_2_METHOD = EraseSectors
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WB_ERASE_2_STEP_TYPE = 1
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"""
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result = []
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cmd = f'shred -zvn 0 /dev/{disk}'
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result.append(exec_cmd_erase(cmd))
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cmd = f'badblocks -st random -w /dev/{disk}'
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result.append(exec_cmd_erase(cmd))
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return result
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def erase_enhanced(disk):
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"""
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Enhanced Secure Erasure
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Settings for advanced data erasure using badblocks Linux software.
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A secured-way of erasing data storages, erase hidden areas,
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checking the erase sector by sector.
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Performs 3 passes overwriting every sector with zeros and ones,
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and final verification. Compliant with HMG Infosec Standard 5 Enhanced.
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In settings appear:
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WB_ERASE = EraseSectors
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WB_ERASE_LEADING_ZEROS = True
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WB_ERASE_1_METHOD = EraseBasic
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WB_ERASE_1_STEP_TYPE = 1
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WB_ERASE_2_METHOD = EraseBasic
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WB_ERASE_2_STEP_TYPE = 0
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WB_ERASE_3_METHOD = EraseSectors
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WB_ERASE_3_STEP_TYPE = 1
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"""
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result = []
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cmd = f'shred -vn 1 /dev/{disk}'
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result.append(exec_cmd_erase(cmd))
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cmd = f'shred -zvn 0 /dev/{disk}'
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result.append(exec_cmd_erase(cmd))
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## creo que realmente seria asi (3 pases y una extra poniendo a ceros):
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# shred -zvn 3 /def/{disk}
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# tampoco estoy seguro que el badblocks haga un proceso de verificacion.
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cmd = f'badblocks -st random -w /dev/{disk}'
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result.append(exec_cmd_erase(cmd))
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return result
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## End Xavier Functions ##
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def ata_secure_erase_null(disk):
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cmd_baseline = f'hdparm --user-master u --security-erase NULL /dev/{disk}'
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return [exec_cmd_erase(cmd_baseline)]
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def ata_secure_erase_enhanced(disk):
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cmd_enhanced = f'hdparm --user-master u --security-erase-enhanced /dev/{disk}'
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return [exec_cmd_erase(cmd_enhanced)]
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def nvme_secure_erase(disk):
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cmd_encrypted = f'nvme format /dev/{disk} --ses=1'
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return [exec_cmd_erase(cmd_encrypted)]
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## End Erase Functions ##
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@logs
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def get_disks():
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disks = json.loads(
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exec_cmd('lsblk -Jdo NAME,TYPE,MOUNTPOINTS,ROTA,TRAN')
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)
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return disks.get('blockdevices', [])
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@logs
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def gen_erase(all_disks, type_erase, user_disk=None):
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erase = []
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for disk in all_disks:
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if user_disk and disk['name'] not in user_disk:
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continue
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if disk['type'] != 'disk':
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continue
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if 'boot' in disk['mountpoints']:
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continue
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if not disk['rota']:
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# if soport nvme erase
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erase.append(nvme_secure_erase(disk['name']))
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elif disk['tran'] in ['ata', 'sata']:
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# if soport ata erase
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if type_erase == 'basic':
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erase.append(ata_secure_erase_null(disk['name']))
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elif type_erase == 'baseline':
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erase.append(ata_secure_erase_null(disk['name']))
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elif type_erase == 'enhanced':
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erase.append(ata_secure_erase_enhanced(disk['name']))
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else:
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# For old disks
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if type_erase == 'basic':
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erase.append(erase_basic(disk['name']))
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elif type_erase == 'baseline':
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erase.append(erase_baseline(disk['name']))
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elif type_erase == 'enhanced':
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erase.append(erase_enhanced(disk['name']))
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return erase
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@logs
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def exec_smart(disk):
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cmd = f'smartctl -x --json=cosviu /dev/{disk}'
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return json.loads(exec_cmd(cmd))
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@logs
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def smartctl(all_disks, disk=None):
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if disk:
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return exec_smart(disk)
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data_list = []
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for disk in all_disks:
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if disk['type'] == 'disk':
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data = exec_smart(disk['name'])
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data_list.append(data)
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return data_list
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## End Command Functions ##
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def get_data(all_disks):
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lshw = 'sudo lshw -json'
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hwinfo = 'sudo hwinfo --reallyall'
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dmidecode = 'sudo dmidecode'
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data = {
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'lshw': exec_cmd(lshw),
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'disks': smartctl(all_disks),
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'hwinfo': exec_cmd(hwinfo),
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'dmidecode': exec_cmd(dmidecode)
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}
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return data
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def gen_snapshot(all_disks):
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snapshot = SNAPSHOT_BASE.copy()
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snapshot['data'] = get_data(all_disks)
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return snapshot
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def save_snapshot_in_disk(snapshot, path):
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filename = "{}/{}_{}.json".format(
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path,
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datetime.now().strftime("%Y%m%d-%H_%M_%S"),
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snapshot['uuid']
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)
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print(f"workbench: Snapshot written in path '{filename}'")
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with open(filename, "w") as f:
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f.write(json.dumps(snapshot))
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# TODO sanitize url, if url is like this, it fails
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# url = 'http://127.0.0.1:8000/api/snapshot/'
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def send_snapshot_to_devicehub(snapshot, token, url):
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headers = {
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f"Authorization": "Basic {token}",
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"Content-Type": "application/json"
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}
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return requests.post(url, data=json.dumps(snapshot), headers=headers)
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@logs
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def sync_time():
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# is neccessary?
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ntplib.NTPClient()
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response = client.request('pool.ntp.org')
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def load_config(config_file="settings.ini"):
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"""
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Tries to load configuration from a config file.
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"""
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config = configparser.ConfigParser()
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if os.path.exists(config_file):
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# If config file exists, read from it
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print(f"workbench: Found config file in path: '{config_file}'.")
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config.read(config_file)
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path = config.get('settings', 'path', fallback=os.getcwd())
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# TODO validate that has http:// start
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url = config.get('settings', 'url', fallback=None)
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token = config.get('settings', 'token', fallback=None)
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# TODO validate that the device exists?
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device = config.get('settings', 'device', fallback=None)
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erase = config.get('settings', 'erase', fallback=None)
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else:
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print(f"workbench: Config file '{config_file}' not found. Using default values.")
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path = os.path.join(os.getcwd())
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url, token, device, erase = None, None, None, None
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return {
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'path': path,
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'url': url,
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'token': token,
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'device': device,
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'erase': erase
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}
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def parse_args():
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"""
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Parse config argument, if available
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"""
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parser = argparse.ArgumentParser(description="Optional config loader for workbench.")
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parser.add_argument(
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'--config',
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help="Path to the config file. Defaults to 'settings.ini' in the current directory.",
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default="settings.ini" # Fallback to 'settings.ini' by default
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)
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return parser.parse_args()
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def main():
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vline='\n___________\n\n'
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print(f"{vline}workbench: START\n")
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# Parse the command-line arguments
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args = parse_args()
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# Load the config file, either specified via --config or the default 'settings.ini'
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config_file = args.config
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config = load_config(config_file)
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all_disks = get_disks()
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snapshot = gen_snapshot(all_disks)
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if config['erase'] and config['device']:
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snapshot['erase'] = gen_erase(all_disks, config['erase'], user_disk=config['device'])
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elif config['erase']:
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snapshot['erase'] = gen_erase(all_disks, config['erase'])
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save_snapshot_in_disk(snapshot, config['path'])
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if config['url']:
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send_snapshot_to_devicehub(snapshot, config['token'], config['url'])
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print(f"\nworkbench: END{vline}")
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if __name__ == '__main__':
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main()
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