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<?php |
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/** |
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* Original class from msurguy/Honeypot. Licensed under the MIT License. Instead of using Laravel Crypt class, |
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* this implementation simply returns the decrypted value base64-encoded, as the encoded value. |
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* @see https://github.com/msurguy/Honeypot |
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*/ |
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class Honeypot |
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{ |
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protected $disabled = false; |
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/** |
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* Enable the Honeypot validation |
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*/ |
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public function enable(): void |
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{ |
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$this->disabled = false; |
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} |
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/** |
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* Disable the Honeypot validation |
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*/ |
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public function disable(): void |
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{ |
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$this->disabled = true; |
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} |
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/** |
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* Generate a new honeypot and return the form HTML |
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* @param string $honey_name |
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* @param string $honey_time |
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* @return string |
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*/ |
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public function generate($honey_name, $honey_time): string |
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{ |
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// Encrypt the current time |
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$honey_time_encrypted = $this->getEncryptedTime(); |
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return '<div id="' . $honey_name . '_wrap" style="display:none;">' . "\r\n" . |
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'<input name="' . $honey_name . '" type="text" value="" id="' . $honey_name . '"/>' . "\r\n" . |
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'<input name="' . $honey_time . '" type="text" value="' . $honey_time_encrypted . '"/>' . "\r\n" . |
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'</div>'; |
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} |
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/** |
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* Validate honeypot is empty |
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* |
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* @param mixed $value |
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* @return boolean |
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*/ |
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public function validateHoneypot($value): bool |
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{ |
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if ($this->disabled) { |
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return true; |
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} |
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return $value == ''; |
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} |
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/** |
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* Validate honey time was within the time limit |
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* |
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* @param string $value base64 encoded time value |
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* @param int $minDelta minimum time difference in seconds |
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* @return boolean |
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*/ |
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public function validateHoneytime($value, $minDelta): bool |
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{ |
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if ($this->disabled) { |
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return true; |
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} |
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// Get the decrypted time |
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$value = $this->decryptTime($value); |
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// The current time should be greater than the time the form was built + minimum |
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return (is_numeric($value) && time() > ($value + $minDelta)); |
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} |
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/** |
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* Get encrypted time |
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* @return string |
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*/ |
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public function getEncryptedTime(): string |
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{ |
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return base64_encode(time()); |
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} |
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/** |
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* Decrypt the given time |
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* |
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* @param mixed $time |
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* @return int|null |
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*/ |
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public function decryptTime($time): ?int |
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{ |
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try { |
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return intval(base64_decode($time)); |
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} catch (\Exception $exception) { |
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return null; |
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} |
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} |
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} |
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NatLibFi /
Skosmos
