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Mini Shell
Mini Shell
<?php
/*
* @copyright 2023 Passwords App
*
* @author Marius David Wieschollek
* @license AGPL-3.0
*
* This file is part of the Passwords App
* created by Marius David Wieschollek.
*/
namespace OCA\Passwords\Services;
use OCA\Passwords\Exception\ApiException;
use OCA\Passwords\Provider\Words\WordsProviderInterface;
use OCP\AppFramework\Http;
use Throwable;
/**
* Class WordsService
*
* @package OCA\Passwords\Services
*/
class WordsService {
/**
* WordsService constructor.
*
* @param LoggingService $logger
* @param WordsProviderInterface $wordsProvider
* @param PasswordSecurityCheckService $securityHelper
*/
public function __construct(
protected LoggingService $logger,
protected WordsProviderInterface $wordsProvider,
protected PasswordSecurityCheckService $securityHelper
) {
}
/**
* @param int $strength
* @param bool $addNumbers
* @param bool $addSpecialCharacters
*
* @param int $attempts
*
* @return array
* @throws ApiException
*/
public function getPassword(
int $strength = 1,
bool $addNumbers = false,
bool $addSpecialCharacters = false,
int $attempts = 0
) {
$strength = $this->validateStrength($strength);
try {
$result = $this->wordsProvider->getWords($strength, $addNumbers, $addSpecialCharacters);
if($result !== null) {
if($this->isSecure($result['password'], $addNumbers, $addSpecialCharacters, $strength + 1)) {
return [$result['password'], $result['words'], $strength];
} else {
$this->logger->warning('Words service delivered low quality result');
}
} else {
$this->logger->warning('Words service delivered no result');
}
} catch(Throwable $e) {
$this->logger->logException($e);
}
if($attempts < 6) {
return $this->getPassword($strength, $addNumbers, $addSpecialCharacters, $attempts + 1);
}
$this->logger->error("Words service failed {$attempts} times. Returning error to client.");
throw new ApiException('Internal Words API Error', Http::STATUS_BAD_GATEWAY);
}
/**
* @param string $password
* @param bool $addNumbers
* @param bool $addSpecialCharacters
* @param int $charCount
*
* @return bool
*/
protected function isSecure(string $password, bool $addNumbers, bool $addSpecialCharacters, int $charCount): bool {
if(strlen($password) < 12) return false;
if($addNumbers) {
if(!preg_match_all('/[0-9]/', $password, $numbers) || count($numbers[0]) < $charCount) {
return false;
}
}
if($addSpecialCharacters) {
if(!preg_match_all('/\W/u', $password, $specials) || count($specials[0]) < $charCount) {
return false;
}
}
return $this->securityHelper->isPasswordSecure($password);
}
/**
* @param int $strength
*
* @return int
*/
protected function validateStrength(int $strength): int {
if($strength < 0) {
return 1;
} else if($strength > 4) {
return 4;
}
return $strength;
}
}
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