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