function captcha($profile = 'default')
{
$captcha = Captcha::findWithSession();
if ($captcha instanceof Captcha) {
return $captcha->getAsHtml($profile);
}
return app('captcha')->getAsHtml($profile);
}
public function canPostWithoutCaptcha(PermissionUser $user)
{
// Check if site requires captchas.
if (!site_setting('captchaEnabled')) {
return true;
}
if (!$user->isAccountable()) {
return false;
}
// Check if this user can bypass captchas.
if ($user->canPostWithoutCaptcha($this)) {
return true;
}
// Begin to check captchas for last answers.
$ip = new IP();
$session_id = Session::getId();
$lastCaptcha = Captcha::select('created_at', 'cracked_at')->where(function ($query) use($ip, $session_id) {
// Find captchas answered by this user.
$query->where('client_session_id', hex2bin($session_id));
// Pull the lifespan of a captcha.
// This is the number of minutes between successful entries.
$captchaLifespan = (int) site_setting('captchaLifespanTime', 0);
if ($captchaLifespan > 0) {
$query->whereNotNull('cracked_at');
$query->where('cracked_at', '>=', \Carbon\Carbon::now()->subMinutes($captchaLifespan));
}
})->orderBy('cracked_at', 'desc')->first();
$requireCaptcha = !$lastCaptcha instanceof Captcha;
if (!$requireCaptcha) {
$captchaLifespan = (int) site_setting('captchaLifespanPosts');
if ($captchaLifespan > 0) {
$postsWithCaptcha = Post::select('created_at')->where('author_ip', $ip->toText())->where('created_at', '>=', $lastCaptcha->created_at)->count();
$requireCaptcha = $postsWithCaptcha >= $captchaLifespan;
}
}
return !$requireCaptcha;
}
/**
* Boot the service provider.
*
* @return null
*/
public function boot(Router $router)
{
$this->publishes([__DIR__ . '/config/captcha.php' => config_path('captcha.php')]);
$this->mergeConfigFrom(__DIR__ . '/config/captcha.php', 'captcha');
$this->registerValidationRules($this->app['validator']);
$this->app->singleton('captcha', function ($app) {
return new Captcha();
});
include realpath(dirname(__FILE__)) . "/helpers/captcha.php";
$router->pattern('sha1', '[0-9a-f]{5,40}');
$router->pattern('alphanumeric', '[0-9a-z]{1,32}');
$router->group(['middleware' => config('captcha.middleware', 'api')], function () use($router) {
/**
* Destroys an existing captcha and returns a new one.
*
* @return Response A redirect
*/
$router->get(config('captcha.route') . '/replace', function () {
$captcha = Captcha::replace(Request::get('hash', null));
return redirect(config('captcha.route') . '/' . $captcha->profile . '/' . $captcha->getHash() . '.png');
});
/**
* Destroys an existing captcha and returns a new one using JSON.
*
* @return \Intervention\Image\ImageManager
*/
$router->get(config('captcha.route') . '/replace.json', function () {
return Captcha::replace(Request::get('hash', null));
});
/**
* Redirects the user to a default profile captcha.
*
* @return Response A redirect
*/
$router->get(config('captcha.route'), function () {
$captcha = Captcha::findOrCreateCaptcha();
return redirect(config('captcha.route') . '/' . $captcha->getHash() . '.png');
});
/**
* Redirects the user to a specific profile captcha.
*
* @param string $profile
* @return Response A redirect
*/
$router->get(config('captcha.route') . '/{alphanumeric}', function ($profile) {
$captcha = Captcha::findOrCreateCaptcha($profile);
return redirect(config('captcha.route') . '/' . $profile . '/' . $captcha->getHash() . '.png');
});
/**
* Returns a JSON response with a new captcha hash.
*
* @return \Intervention\Image\ImageManager
*/
$router->get(config('captcha.route') . '.json', function () {
return Captcha::findOrCreateCaptcha();
});
/**
* Returns a JSON response with a new captcha hash.
*
* @param string $profile
* @return response Redirect
*/
$router->get(config('captcha.route') . '/{alphanumeric}.json', function ($profile) {
return Captcha::findOrCreateCaptcha($profile);
});
/**
* Displays a default profile captcha.
*
* @param string $hash
* @return Response Image with headers
*/
$router->get(config('captcha.route') . '/{sha1}.png', function ($sha1) {
$captcha = Captcha::findWithHex($sha1);
if ($captcha instanceof Captcha) {
return $captcha->getAsResponse();
}
return abort(404);
});
/**
* Displays a specific profile captcha.
*
* @param string $profile
* @param string $config
* @return Response Image with headers
*/
$router->get(config('captcha.route') . '/{alphanumeric}/{sha1}.png', function ($profile, $sha1) {
$captcha = Captcha::findWithHex($sha1);
if ($captcha instanceof Captcha) {
return $captcha->getAsResponse();
}
return abort(404);
});
});
}
public function validateCaptcha($attribute, $value, $parameters)
{
$captcha = Request::input("{$attribute}_hash");
$answered = !!Captcha::answerCaptcha($captcha, $value);
return $answered;
}
/**
* Retrieves the datum for the captcha sibling.
*
* @return \App\Captcha|boolean False if no captcha required.
*/
protected function buildSiblingCaptcha()
{
$needCaptcha = !App::make('App\\Board')->canPostWithoutCaptcha(App::make('App\\Services\\UserManager')->user);
return $needCaptcha ? Captcha::findOrCreateCaptcha() : false;
}
