snipe-it/app/Console/Commands/RecryptFromMcrypt.php

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<?php
namespace App\Console\Commands;
use App\Models\CustomField;
use Illuminate\Console\Command;
use App\LegacyEncrypter\McryptEncrypter;
use App\Models\Setting;
use App\Models\Asset;
use Illuminate\Support\Facades\Storage;
class RecryptFromMcrypt extends Command
{
/**
* The name and signature of the console command.
*
* @var string
*/
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protected $signature = 'snipeit:legacy-recrypt
{--force : Force a re-crypt of encrypted data from MCRYPT.}';
/**
* The console command description.
*
* @var string
*/
protected $description = 'This command allows upgrading users to de-encrypt their deprecated mcrypt encrypted fields and re-encrypt them using the current OpenSSL encryption.';
/**
* Create a new command instance.
*
* @return void
*/
public function __construct()
{
parent::__construct();
}
/**
* Execute the console command.
*
* @return mixed
*/
public function handle()
{
// Check and see if they have a legacy app key listed in their .env
// If not, we can try to use the current APP_KEY if looks like it's old
$legacy_key = env('LEGACY_APP_KEY');
$key_parts = explode(':', $legacy_key);
$legacy_cipher = env('LEGACY_CIPHER', 'rijndael-256');
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$errors = array();
if (!$legacy_key) {
$this->error('ERROR: You do not have a LEGACY_APP_KEY set in your .env file. Please locate your old APP_KEY and ADD a line to your .env file like: LEGACY_APP_KEY=YOUR_OLD_APP_KEY');
return false;
}
// Do some basic legacy app key length checks
if (strlen($legacy_key) == 32) {
$legacy_length_check = true;
} elseif (array_key_exists('1', $key_parts) && (strlen($key_parts[1])==44)) {
$legacy_key = base64_decode($key_parts[1],true);
$legacy_length_check = true;
} else {
$legacy_length_check = false;
}
// Check that the app key is 32 characters
if ($legacy_length_check === true) {
$this->comment('INFO: Your LEGACY_APP_KEY looks correct. Okay to continue.');
} else {
$this->error('ERROR: Your LEGACY_APP_KEY is not the correct length (32 characters or base64 followed by 44 characters for later versions). Please locate your old APP_KEY and use that as your LEGACY_APP_KEY in your .env file to continue.');
return false;
}
$this->error('================================!!!! WARNING !!!!================================');
$this->error('================================!!!! WARNING !!!!================================');
$this->comment("This tool will attempt to decrypt your old Snipe-IT (mcrypt, now deprecated) encrypted data and re-encrypt it using OpenSSL. \n\nYou should only continue if you have backed up any and all old APP_KEYs and have backed up your data.");
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$force = ($this->option('force')) ? true : false;
if ($force || ($this->confirm("Are you SURE you wish to continue?"))) {
$backup_file = 'backups/env-backups/'.'app_key-'.date('Y-m-d-gis');
try {
Storage::disk('local')->put($backup_file, 'APP_KEY: '.config('app.key'));
Storage::disk('local')->append($backup_file, 'LEGACY_APP_KEY: '.$legacy_key);
} catch (\Exception $e) {
$this->info('WARNING: Could not backup app keys');
}
if ($legacy_cipher){
$mcrypter = new McryptEncrypter($legacy_key,$legacy_cipher);
}else{
$mcrypter = new McryptEncrypter($legacy_key);
}
$settings = Setting::getSettings();
if ($settings->ldap_pword=='') {
$this->comment('INFO: No LDAP password found. Skipping... ');
} else {
$decrypted_ldap_pword = $mcrypter->decrypt($settings->ldap_pword);
$settings->ldap_pword = \Crypt::encrypt($decrypted_ldap_pword);
$settings->save();
}
/** @var CustomField[] $custom_fields */
$custom_fields = CustomField::where('field_encrypted','=', 1)->get();
$this->comment('INFO: Retrieving encrypted custom fields...');
$query = Asset::withTrashed();
foreach ($custom_fields as $custom_field) {
$this->comment('FIELD TO RECRYPT: '.$custom_field->name .' ('.$custom_field->db_column.')');
$query->orWhereNotNull($custom_field->db_column);
}
// Get all assets with a value in any of the fields that were encrypted
/** @var Asset[] $assets */
$assets = $query->get();
$bar = $this->output->createProgressBar(count($assets));
foreach ($assets as $asset) {
foreach ($custom_fields as $encrypted_field) {
$columnName = $encrypted_field->db_column;
// Make sure the value isn't null
if ($asset->{$columnName}!='') {
// Try to decrypt the payload using the legacy app key
try {
$decrypted_field = $mcrypter->decrypt($asset->{$columnName});
$asset->{$columnName} = \Crypt::encrypt($decrypted_field);
$this->comment($decrypted_field);
} catch (\Exception $e) {
$errors[] = ' - ERROR: Could not decrypt field ['.$encrypted_field->name.']: '.$e->getMessage();
}
}
}
$asset->save();
$bar->advance();
}
$bar->finish();
if (count($errors) > 0) {
$this->comment("\n\n");
$this->error("The decrypter encountered some errors: \n");
foreach ($errors as $error) {
$this->error($error);
}
}
}
}
}