root
45 lines
1.1 KiB
PHP
45 lines
1.1 KiB
PHP
<?php
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namespace App\Services\Auth;
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class RegistrationCaptchaService
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{
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private function cacheKey(): string
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{
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$ip = (string) (request()?->ip() ?? 'unknown');
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$ua = (string) (request()?->header('User-Agent') ?? '');
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$hash = substr(sha1($ua), 0, 12);
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return 'captcha:' . $ip . ':' . $hash;
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}
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public function generate(?int $length = null): string
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{
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$length = $length ?? random_int(4, 8);
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$characters = 'ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghjkmnopqrstuvwxyz0123456789';
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$captchaText = '';
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for ($i = 0; $i < $length; $i++) {
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$captchaText .= $characters[random_int(0, strlen($characters) - 1)];
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}
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cache()->put($this->cacheKey(), $captchaText, now()->addMinutes(10));
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return $captchaText;
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}
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public function verify(string $input): bool
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{
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$expected = (string) cache()->get($this->cacheKey(), '');
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if ($expected === '') {
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return false;
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}
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return hash_equals($expected, $input);
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}
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public function clear(): void
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{
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cache()->forget($this->cacheKey());
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}
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}
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