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<?php |
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/** |
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* Copyright (c) 2017 - present |
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* LaravelGoogleRecaptcha - ReCaptchaBuilder.php |
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* author: Roberto Belotti - [email protected] |
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* web : robertobelotti.com, github.com/biscolab |
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* Initial version created on: 12/9/2018 |
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* MIT license: https://github.com/biscolab/laravel-recaptcha/blob/master/LICENSE |
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*/ |
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namespace Biscolab\ReCaptcha; |
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use Exception; |
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class ReCaptchaBuilder { |
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/** |
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* The Site key |
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* please visit https://developers.google.com/recaptcha/docs/start |
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* @var string |
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*/ |
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protected $api_site_key; |
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/** |
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* The Secret key |
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* please visit https://developers.google.com/recaptcha/docs/start |
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* @var string |
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*/ |
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protected $api_secret_key; |
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/** |
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* The chosen ReCAPTCHA version |
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* please visit https://developers.google.com/recaptcha/docs/start |
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* @var string |
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*/ |
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protected $version; |
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/** |
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* Whether is true the ReCAPTCHA is inactive |
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* @var boolean |
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*/ |
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protected $skip_by_ip = false; |
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/** |
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* The API request URI |
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*/ |
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protected $api_url = 'https://www.google.com/recaptcha/api/siteverify'; |
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public function __construct($api_site_key, $api_secret_key, $version = 'v2') { |
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$this->setApiSiteKey($api_site_key); |
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$this->setApiSecretKey($api_secret_key); |
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$this->setVersion($version); |
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$this->setSkipByIp($this->skipByIp()); |
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} |
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/** |
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* @param string $api_site_key |
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* |
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* @return ReCaptchaBuilder |
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*/ |
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public function setApiSiteKey(string $api_site_key): ReCaptchaBuilder { |
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$this->api_site_key = $api_site_key; |
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return $this; |
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} |
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/** |
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* @param string $api_secret_key |
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* |
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* @return ReCaptchaBuilder |
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*/ |
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public function setApiSecretKey(string $api_secret_key): ReCaptchaBuilder { |
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$this->api_secret_key = $api_secret_key; |
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return $this; |
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} |
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/** |
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* @param string $version |
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* |
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* @return ReCaptchaBuilder |
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*/ |
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public function setVersion(string $version): ReCaptchaBuilder { |
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$this->version = $version; |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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public function getVersion(): string { |
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return $this->version; |
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} |
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/** |
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* @param bool $skip_by_ip |
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* |
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* @return ReCaptchaBuilder |
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*/ |
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public function setSkipByIp(bool $skip_by_ip): ReCaptchaBuilder { |
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$this->skip_by_ip = $skip_by_ip; |
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return $this; |
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} |
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/** |
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* @return array|mixed |
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*/ |
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public function getIpWhitelist() { |
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$whitelist = config('recaptcha.skip_ip', []); |
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if(!is_array($whitelist)) { |
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$whitelist = explode(',', $whitelist); |
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} |
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return $whitelist; |
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} |
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/** |
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* Checks whether the user IP address is among IPs "to be skipped" |
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* |
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* @return boolean |
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*/ |
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public function skipByIp(): bool { |
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return (in_array(request()->ip(), $this->getIpWhitelist())); |
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} |
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/** |
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* Write script HTML tag in you HTML code |
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* Insert before </head> tag |
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* |
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* @param string|null $formId |
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* @param array|null $configuration |
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* |
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* @return string |
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* @throws Exception |
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*/ |
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public function htmlScriptTagJsApi(?string $formId = '', ?array $configuration = []): string { |
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if ($this->skip_by_ip) { |
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return ''; |
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} |
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switch ($this->version) { |
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case 'v3': |
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$html = "<script src=\"https://www.google.com/recaptcha/api.js?render={$this->api_site_key}\"></script>"; |
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break; |
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default: |
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$html = "<script src=\"https://www.google.com/recaptcha/api.js\" async defer></script>"; |
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} |
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if ($this->version == 'invisible') { |
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if (!$formId) { |
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throw new Exception("formId required", 1); |
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} |
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$html .= '<script> |
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function biscolabLaravelReCaptcha(token) { |
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document.getElementById("' . $formId . '").submit(); |
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} |
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</script>'; |
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} |
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elseif ($this->version == 'v3') { |
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$action = array_get($configuration, 'action', 'homepage'); |
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$js_custom_validation = array_get($configuration, 'custom_validation', ''); |
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// Check if set custom_validation. That function will override default fetch validation function |
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if ($js_custom_validation) { |
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$validate_function = ($js_custom_validation) ? "{$js_custom_validation}(token);" : ''; |
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} |
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else { |
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$js_then_callback = array_get($configuration, 'callback_then', ''); |
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$js_callback_catch = array_get($configuration, 'callback_catch', ''); |
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$js_then_callback = ($js_then_callback) ? "{$js_then_callback}(response)" : ''; |
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$js_callback_catch = ($js_callback_catch) ? "{$js_callback_catch}(err)" : ''; |
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$validate_function = " |
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fetch('/" . config('recaptcha.default_validation_route', 'biscolab-recaptcha/validate') . "?" . config('recaptcha.default_token_parameter_name', 'token') . "=' + token, { |
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headers: { |
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\"X-Requested-With\": \"XMLHttpRequest\", |
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\"X-CSRF-TOKEN\": csrfToken.content |
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} |
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}) |
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.then(function(response) { |
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{$js_then_callback} |
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}) |
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.catch(function(err) { |
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{$js_callback_catch} |
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});"; |
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} |
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$html .= "<script> |
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var csrfToken = document.head.querySelector('meta[name=\"csrf-token\"]'); |
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grecaptcha.ready(function() { |
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grecaptcha.execute('{$this->api_site_key}', {action: '{$action}'}).then(function(token) { |
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{$validate_function} |
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}); |
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}); |
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</script>"; |
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} |
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return $html; |
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} |
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/** |
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* @param array|null $configuration |
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* |
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* @return string |
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*/ |
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public function htmlScriptTagJsApiV3(?array $configuration = []): string { |
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return $this->htmlScriptTagJsApi('', $configuration); |
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} |
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/** |
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* Call out to reCAPTCHA and process the response |
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* |
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* @param string $response |
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* |
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* @return boolean|array |
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*/ |
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public function validate($response) { |
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if ($this->skip_by_ip) { |
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if ($this->returnArray()) { |
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// Add 'skip_by_ip' field to response |
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return [ |
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'skip_by_ip' => true, |
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'score' => 0.9, |
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'success' => true |
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]; |
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} |
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return true; |
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} |
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$params = http_build_query([ |
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'secret' => $this->api_secret_key, |
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'remoteip' => request()->getClientIp(), |
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'response' => $response, |
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]); |
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$url = $this->api_url . '?' . $params; |
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if (function_exists('curl_version')) { |
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$curl = curl_init($url); |
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curl_setopt($curl, CURLOPT_HEADER, false); |
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); |
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curl_setopt($curl, CURLOPT_TIMEOUT, 1); |
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); |
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$curl_response = curl_exec($curl); |
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} |
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else { |
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$curl_response = file_get_contents($url); |
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} |
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if (is_null($curl_response) || empty($curl_response)) { |
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if ($this->returnArray()) { |
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// Add 'error' field to response |
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return [ |
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'error' => 'cURL response empty', |
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'score' => 0.1, |
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'success' => false |
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]; |
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} |
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return false; |
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} |
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$response = json_decode(trim($curl_response), true); |
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if ($this->returnArray()) { |
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return $response; |
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} |
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return $response['success']; |
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} |
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/** |
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* @return bool |
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*/ |
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protected function returnArray(): bool { |
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return ($this->version == 'v3'); |
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} |
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} |