Configure Captcha';
$pro_link = 'Get PRO';
array_unshift($links, $settings_link);
array_unshift($links, $pro_link);
return $links;
} // plugin_action_links
static function admin_enqueue_scripts($hook)
{
if ('settings_page_captcha-code-authentication' == $hook) {
wp_enqueue_style('wp-jquery-ui-dialog');
wp_enqueue_style('wp-captcha-code-admin', WP_CAPTCHA_CODE_URL . 'css/wp-captcha-code.css', array(), self::$version);
wp_enqueue_script('jquery-ui-core');
wp_enqueue_script('jquery-ui-position');
wp_enqueue_script('jquery-effects-core');
wp_enqueue_script('jquery-effects-blind');
wp_enqueue_script('jquery-ui-dialog');
$js_localize = array(
'wp301_install_url' => add_query_arg(array('action' => 'wp_captcha_code_install_wp301', '_wpnonce' => wp_create_nonce('install_wp301'), 'rnd' => rand()), admin_url('admin.php'))
);
wp_enqueue_script('wp-captcha-code-admin', WP_CAPTCHA_CODE_URL . 'js/wp-captcha-code.js', array('jquery'), self::$version, true);
wp_localize_script('wp-captcha-code-admin', 'wp_captcha_code_vars', $js_localize);
}
} // admin_enqueue_scripts
static function is_plugin_page()
{
$current_screen = get_current_screen();
if ($current_screen->id == 'settings_page_captcha-code-authentication') {
return true;
} else {
return false;
}
} // is_plugin_page
static function admin_footer_text($text)
{
if (!self::is_plugin_page()) {
return $text;
}
$text = '';
return $text;
} // admin_footer_text
static function generate_web_link($placement = '', $page = '/', $params = array(), $anchor = '')
{
$base_url = 'https://getwpcaptcha.com';
if ('/' != $page) {
$page = '/' . trim($page, '/') . '/';
}
if ($page == '//') {
$page = '/';
}
$parts = array_merge(array('utm_source' => 'captcha-code-authentication', 'utm_content' => $placement), $params);
if (!empty($anchor)) {
$anchor = '#' . trim($anchor, '#');
}
$out = $base_url . $page . '?' . http_build_query($parts, '', '&') . $anchor;
return $out;
} // generate_web_link
static function load_options()
{
$options = get_option(WP_CAPTCHA_CODE_OPTIONS, array());
$change = false;
if (!isset($options['meta'])) {
$options['meta'] = array('first_version' => self::$version, 'first_install' => current_time('timestamp', true));
$change = true;
}
if (!isset($options['dismissed_notices'])) {
$options['dismissed_notices'] = array();
$change = true;
}
if (!isset($options['options'])) {
$options['options'] = array();
$options['options']['show_login'] = get_option('wpcaptcha_login') !== false ? get_option('wpcaptcha_login') : 'yes';
$options['options']['show_registration'] = get_option('wpcaptcha_register') !== false ? get_option('wpcaptcha_register') : 'yes';
$options['options']['show_lost_password'] = get_option('wpcaptcha_lost') !== false ? get_option('wpcaptcha_lost') : 'yes';
$options['options']['show_comments'] = get_option('wpcaptcha_comments') !== false ? get_option('wpcaptcha_comments') : 'yes';
$options['options']['show_logged_in'] = get_option('wpcaptcha_registered') !== false ? get_option('wpcaptcha_registered') : 'no';
$options['options']['captcha_type'] = get_option('wpcaptcha_type') !== false ? get_option('wpcaptcha_type') : 'alphanumeric';
$options['options']['captcha_letters'] = get_option('wpcaptcha_letters') !== false ? get_option('wpcaptcha_letters') : 'capital';
$options['options']['total_no_of_characters'] = get_option('wpcaptcha_total_no_of_characters') !== false ? get_option('wpcaptcha_total_no_of_characters') : 3;
$change = true;
}
if (isset($_POST['submit']) && isset($_POST['wpcatpcha_update_admin_options_nonce'])) {
if (!wp_verify_nonce($_POST['wpcatpcha_update_admin_options_nonce'], 'wpcatpcha_update_admin_options')) {
echo '
' . esc_html__('Sorry, your nonce did not verify.', 'captcha-code-authentication') . '
';
} else {
if (isset($_POST['captcha_show_login'])) {
$options['options']['show_login'] = sanitize_text_field($_POST['captcha_show_login']);
}
if (isset($_POST['captcha_show_registration'])) {
$options['options']['show_registration'] = sanitize_text_field($_POST['captcha_show_registration']);
}
if (isset($_POST['captcha_show_lost_password'])) {
$options['options']['show_lost_password'] = sanitize_text_field($_POST['captcha_show_lost_password']);
}
if (isset($_POST['captcha_show_comments'])) {
$options['options']['show_comments'] = sanitize_text_field($_POST['captcha_show_comments']);
}
if (isset($_POST['captcha_show_logged_in'])) {
$options['options']['show_logged_in'] = sanitize_text_field($_POST['captcha_show_logged_in']);
}
if (isset($_POST['captcha_type'])) {
$options['options']['captcha_type'] = sanitize_text_field($_POST['captcha_type']);
}
if (isset($_POST['captcha_letters'])) {
$options['options']['captcha_letters'] = sanitize_text_field($_POST['captcha_letters']);
}
if (isset($_POST['total_no_of_characters'])) {
$options['options']['total_no_of_characters'] = sanitize_text_field($_POST['total_no_of_characters']);
}
$change = true;
echo '
' . esc_html__('Options saved.', 'captcha-code-authentication') . '
';
}
}
if ($change) {
update_option(WP_CAPTCHA_CODE_OPTIONS, $options, true);
}
self::$options = $options;
return $options['options'];
} // load_options
static function get_options()
{
return self::$options['options'];
} // get_options
static function update_options($key, $data)
{
if (false === in_array($key, array('meta', 'dismissed_notices', 'options'))) {
user_error('Unknown options key.', E_USER_ERROR);
return false;
}
self::$options[$key] = $data;
$tmp = update_option(WP_CAPTCHA_CODE_OPTIONS, self::$options);
return $tmp;
} // update_options
static function get_plugin_version()
{
$plugin_data = get_file_data(__FILE__, array('version' => 'Version'), 'plugin');
return $plugin_data['version'];
} // get_plugin_version
static function admin_menu()
{
add_options_page(
esc_html__('Captcha'),
esc_html__('Captcha'),
'manage_options',
'captcha-code-authentication',
array(__CLASS__, 'options_page')
);
} // admin_menu
static function captcha_for_login()
{
echo '
';
self::generate_captcha_image();
if (isset($_GET['captcha']) && $_GET['captcha'] == 'confirm_error') {
echo '';;
$_SESSION['captcha_error'] = '';
}
echo '
';
return true;
} // captcha_for_login
static function captcha_login_errors($errors)
{
if (isset($_REQUEST['action']) && 'register' == sanitize_text_field($_REQUEST['action'])) {
return ($errors);
}
if (esc_html($_SESSION['captcha_code']) != sanitize_text_field($_REQUEST['captcha_code'])) {
return $errors . '';
}
return $errors;
} // captcha_login_errors
static function captcha_login_redirect($url)
{
/* Captcha mismatch */
if (empty($_REQUEST['captcha_code']) || (isset($_SESSION['captcha_code']) && esc_html($_SESSION['captcha_code']) != sanitize_text_field($_REQUEST['captcha_code']))) {
$_SESSION['captcha_error'] = esc_html__('Incorrect captcha confirmation!', 'captcha-code-authentication');
wp_clear_auth_cookie();
return $_SERVER["REQUEST_URI"] . "/?captcha='confirm_error'";
}
/* Captcha match: take to the admin panel */ else {
return home_url('/wp-admin/');
}
} // captcha_login_redirect
static function captcha_comment_form()
{
$options = self::get_options();
if (is_user_logged_in() && $options['show_logged_in'] == 'yes') {
return true;
}
echo '';
self::generate_captcha_image();
echo '
';
remove_action('comment_form', 'captcha_comment_form');
return true;
} // captcha_comment_form
static function captcha_comment_post($comment)
{
$options = self::get_options();
if (is_user_logged_in() && $options['show_logged_in'] == 'yes') {
return $comment;
}
// skip captcha for comment replies from the admin menu
if (
isset($_REQUEST['action']) && $_REQUEST['action'] == 'replyto-comment' &&
(check_ajax_referer('replyto-comment', '_ajax_nonce', false) || check_ajax_referer('replyto-comment', '_ajax_nonce-replyto-comment', false))
) {
// skip captcha
return $comment;
}
// Skip captcha for trackback or pingback
if ($comment['comment_type'] != '' && $comment['comment_type'] != 'comment') {
// skip captcha
return $comment;
}
// If captcha is empty
if (empty($_REQUEST['captcha_code']))
wp_die(esc_html__('CAPTCHA cannot be empty.', 'captcha-code-authentication'));
// captcha was matched
if ($_SESSION['captcha_code'] == $_REQUEST['captcha_code']) {
return ($comment);
} else {
wp_die(esc_html__('Error: Incorrect CAPTCHA. Press your browser\'s back button and try again.', 'captcha-code-authentication'));
}
} // captcha_comment_post
static function wp_captcha_register($default)
{
echo '
';
self::generate_captcha_image();
echo '
';
return true;
} // wp_captcha_register
static function captcha_register_post($login, $email, $errors)
{
// If captcha is blank - add error
if (isset($_REQUEST['captcha_code']) && "" == $_REQUEST['captcha_code']) {
$errors->add('captcha_blank', '' . esc_html__('ERROR', 'captcha-code-authentication') . ': ' . esc_html__('Please complete the CAPTCHA.', 'captcha-code-authentication'));
return $errors;
}
if (isset($_REQUEST['captcha_code']) && ($_SESSION['captcha_code'] == $_REQUEST['captcha_code'])) {
// captcha was matched
} else {
$errors->add('captcha_wrong', '' . esc_html__('ERROR', 'captcha-code-authentication') . ': ' . esc_html__('That CAPTCHA was incorrect.', 'captcha-code-authentication'));
}
return ($errors);
} // captcha_register_post
static function captcha_register_validate($results)
{
if (isset($_REQUEST['captcha_code']) && "" == $_REQUEST['captcha_code']) {
$results['errors']->add('captcha_blank', '' . esc_html__('ERROR', 'captcha-code-authentication') . ': ' . esc_html__('Please complete the CAPTCHA.', 'captcha-code-authentication'));
return $results;
}
if (isset($_REQUEST['captcha_code']) && ($_SESSION['captcha_code'] == $_REQUEST['captcha_code'])) {
// captcha was matched
} else {
$results['errors']->add('captcha_wrong', '' . esc_html__('ERROR', 'captcha-code-authentication') . ': ' . esc_html__('That CAPTCHA was incorrect.', 'captcha-code-authentication'));
}
return ($results);
} // captcha_register_validate
static function captcha_lostpassword($default)
{
echo '
';
self::generate_captcha_image();
echo '
';
} // captcha_lostpassword
static function captcha_lostpassword_post()
{
if (isset($_REQUEST['user_login']) && "" == $_REQUEST['user_login'])
return;
// If captcha doesn't entered
if (empty($_REQUEST['captcha_code'])) {
wp_die(esc_html__('Please complete the CAPTCHA.', 'captcha-code-authentication'));
}
// Check entered captcha
if (isset($_REQUEST['captcha_code']) && ($_SESSION['captcha_code'] == $_REQUEST['captcha_code'])) {
return;
} else {
wp_die(esc_html__('Error: Incorrect CAPTCHA. Press your browser\'s back button and try again.', 'captcha-code-authentication'));
}
} // captcha_lostpassword_post
static function generate_captcha_image()
{
$image_width = 120;
$image_height = 40;
$options = self::get_options();
$font = WP_CAPTCHA_CODE_DIR . '/css/monofont.ttf';
if (!empty($options['captcha_type']) && $options['captcha_type'] == 'alphanumeric') {
switch ($options['captcha_letters']) {
case 'capital':
$possible_letters = '23456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case 'small':
$possible_letters = '23456789bcdfghjkmnpqrstvwxyz';
break;
case 'capitalsmall':
$possible_letters = '23456789bcdfghjkmnpqrstvwxyzABCEFGHJKMNPRSTVWXYZ';
break;
default:
$possible_letters = '23456789bcdfghjkmnpqrstvwxyz';
break;
}
} elseif (!empty($options['captcha_type']) && $options['captcha_type'] == 'alphabets') {
switch ($options['captcha_letters']) {
case 'capital':
$possible_letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case 'small':
$possible_letters = 'bcdfghjkmnpqrstvwxyz';
break;
case 'capitalsmall':
$possible_letters = 'bcdfghjkmnpqrstvwxyzABCEFGHJKMNPRSTVWXYZ';
break;
default:
$possible_letters = 'abcdefghijklmnopqrstuvwxyz';
break;
}
} elseif (!empty($options['captcha_type']) && $options['captcha_type'] == 'numbers') {
$possible_letters = '0123456789';
} else {
$possible_letters = '0123456789';
}
$random_dots = 0;
$random_lines = 20;
$captcha_text_color = "0x142864";
$captcha_noice_color = "0x142864";
$code = '';
$i = 0;
while ($i < $options['total_no_of_characters']) {
$code .= substr($possible_letters, mt_rand(0, strlen($possible_letters) - 1), 1);
$i++;
}
$font_size = $image_height * 0.75;
$image = @imagecreate($image_width, $image_height);
/* setting the background, text and noise colours here */
imagecolorallocate($image, 255, 255, 255);
$arr_text_color = self::captcha_hexrgb($captcha_text_color);
$text_color = imagecolorallocate(
$image,
$arr_text_color['red'],
$arr_text_color['green'],
$arr_text_color['blue']
);
$arr_noice_color = self::captcha_hexrgb($captcha_noice_color);
$image_noise_color = imagecolorallocate(
$image,
$arr_noice_color['red'],
$arr_noice_color['green'],
$arr_noice_color['blue']
);
/* generating the dots randomly in background */
for ($i = 0; $i < $random_dots; $i++) {
imagefilledellipse($image, mt_rand(0, $image_width), mt_rand(0, $image_height), 2, 3, $image_noise_color);
}
/* generating lines randomly in background of image */
for ($i = 0; $i < $random_lines; $i++) {
imageline($image, mt_rand(0, $image_width), mt_rand(0, $image_height), mt_rand(0, $image_width), mt_rand(0, $image_height), $image_noise_color);
}
/* create a text box and add 6 letters code in it */
$textbox = imagettfbbox($font_size, 0, $font, $code);
$x = ($image_width - $textbox[4]) / 2;
$y = ($image_height - $textbox[5]) / 2;
imagettftext($image, $font_size, 0, (int)$x, (int)$y, $text_color, $font, $code);
ob_start();
imagejpeg($image); //showing the image
echo ')) . ')
';
imagedestroy($image); //destroying the image instance
$_SESSION['captcha_code'] = $code;
} // generate_captcha_image
static function captcha_hexrgb($hexstr)
{
$int = hexdec($hexstr);
return array(
"red" => 0xFF & ($int >> 0x10),
"green" => 0xFF & ($int >> 0x8),
"blue" => 0xFF & $int
);
} // captcha_hexrgb
static function create_select_options($options, $selected = null, $output = true)
{
$out = "\n";
foreach ($options as $tmp) {
if ((is_array($selected) && in_array($tmp['val'], $selected)) || $selected == $tmp['val']) {
$out .= "\n";
} else {
$out .= "\n";
}
}
if ($output) {
self::wp_kses_wf($out);
} else {
return $out;
}
} // create_select_options
static function options_page()
{
$options = self::get_options();
echo '';
echo '
 . ' "WP Captcha PRO")
';
echo '
';
echo '
';
echo '
';
echo 'If things are not done in a minute
install the plugin manually via Plugins page';
echo 'Starting ...
';
wp_cache_flush();
$upgrader = new Plugin_Upgrader();
echo 'Check if WP 301 Redirects is already installed ...
';
if (self::is_plugin_installed($plugin_slug)) {
echo 'WP 301 Redirects is already installed!
Making sure it\'s the latest version.
';
$upgrader->upgrade($plugin_slug);
$installed = true;
} else {
echo 'Installing WP 301 Redirects.
';
$installed = $upgrader->install($plugin_zip);
}
wp_cache_flush();
if (!is_wp_error($installed) && $installed) {
echo 'Activating WP 301 Redirects.
';
$activate = activate_plugin($plugin_slug);
if (is_null($activate)) {
echo 'WP 301 Redirects Activated.
';
echo '';
echo '
If you are not redirected in a few seconds -
click here.';
}
} else {
echo 'Could not install WP 301 Redirects. You\'ll have to
download and install manually.';
}
echo '