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<?php
namespace WPForms\Admin\Pages;
/**
* SMTP Sub-page.
*
* @since 1.5.7
*/
class SMTP {
/**
* Admin menu page slug.
*
* @since 1.5.7
*
* @var string
*/
const SLUG = 'wpforms-smtp';
/**
* Configuration.
*
* @since 1.5.7
*
* @var array
*/
private $config = [
'lite_plugin' => 'wp-mail-smtp/wp_mail_smtp.php',
'lite_wporg_url' => 'https://wordpress.org/plugins/wp-mail-smtp/',
'lite_download_url' => 'https://downloads.wordpress.org/plugin/wp-mail-smtp.zip',
'pro_plugin' => 'wp-mail-smtp-pro/wp_mail_smtp.php',
'smtp_settings_url' => 'admin.php?page=wp-mail-smtp',
'smtp_wizard_url' => 'admin.php?page=wp-mail-smtp-setup-wizard',
];
/**
* Runtime data used for generating page HTML.
*
* @since 1.5.7
*
* @var array
*/
private $output_data = [];
/**
* Constructor.
*
* @since 1.5.7
*/
public function __construct() {
if ( ! wpforms_current_user_can() ) {
return;
}
$this->hooks();
}
/**
* Hooks.
*
* @since 1.5.7
*/
public function hooks() {
if ( wp_doing_ajax() ) {
add_action( 'wp_ajax_wpforms_smtp_page_check_plugin_status', [ $this, 'ajax_check_plugin_status' ] );
}
// Check what page we are on.
$page = isset( $_GET['page'] ) ? sanitize_key( wp_unslash( $_GET['page'] ) ) : ''; // phpcs:ignore WordPress.CSRF.NonceVerification
// Only load if we are actually on the SMTP page.
if ( $page !== self::SLUG ) {
return;
}
add_action( 'admin_init', [ $this, 'redirect_to_smtp_settings' ] );
add_filter( 'wpforms_admin_header', '__return_false' );
add_action( 'wpforms_admin_page', [ $this, 'output' ] );
add_action( 'admin_enqueue_scripts', [ $this, 'enqueue_assets' ] );
// Hook for addons.
do_action( 'wpforms_admin_pages_smtp_hooks' );
}
/**
* Enqueue JS and CSS files.
*
* @since 1.5.7
*/
public function enqueue_assets() {
$min = wpforms_get_min_suffix();
// Lity.
wp_enqueue_style(
'wpforms-lity',
WPFORMS_PLUGIN_URL . 'assets/css/lity.min.css',
null,
'3.0.0'
);
wp_enqueue_script(
'wpforms-lity',
WPFORMS_PLUGIN_URL . 'assets/js/lity.min.js',
[ 'jquery' ],
'3.0.0',
true
);
wp_enqueue_script(
'wpforms-admin-page-smtp',
WPFORMS_PLUGIN_URL . "assets/js/components/admin/pages/smtp{$min}.js",
[ 'jquery' ],
WPFORMS_VERSION,
true
);
wp_localize_script(
'wpforms-admin-page-smtp',
'wpforms_pluginlanding',
$this->get_js_strings()
);
}
/**
* JS Strings.
*
* @since 1.5.7
*
* @return array Array of strings.
*/
protected function get_js_strings() {
$error_could_not_install = sprintf(
wp_kses( /* translators: %s - Lite plugin download URL. */
__( 'Could not install the plugin automatically. Please <a href="%s">download</a> it and install it manually.', 'wpforms-lite' ),
[
'a' => [
'href' => true,
],
]
),
esc_url( $this->config['lite_download_url'] )
);
$error_could_not_activate = sprintf(
wp_kses( /* translators: %s - Lite plugin download URL. */
__( 'Could not activate the plugin. Please activate it on the <a href="%s">Plugins page</a>.', 'wpforms-lite' ),
[
'a' => [
'href' => true,
],
]
),
esc_url( admin_url( 'plugins.php' ) )
);
return [
'installing' => esc_html__( 'Installing...', 'wpforms-lite' ),
'activating' => esc_html__( 'Activating...', 'wpforms-lite' ),
'activated' => esc_html__( 'WP Mail SMTP Installed & Activated', 'wpforms-lite' ),
'install_now' => esc_html__( 'Install Now', 'wpforms-lite' ),
'activate_now' => esc_html__( 'Activate Now', 'wpforms-lite' ),
'download_now' => esc_html__( 'Download Now', 'wpforms-lite' ),
'plugins_page' => esc_html__( 'Go to Plugins page', 'wpforms-lite' ),
'error_could_not_install' => $error_could_not_install,
'error_could_not_activate' => $error_could_not_activate,
'manual_install_url' => $this->config['lite_download_url'],
'manual_activate_url' => admin_url( 'plugins.php' ),
'smtp_settings' => esc_html__( 'Go to SMTP settings', 'wpforms-lite' ),
'smtp_wizard' => esc_html__( 'Open Setup Wizard', 'wpforms-lite' ),
'smtp_settings_url' => esc_url( $this->config['smtp_settings_url'] ),
'smtp_wizard_url' => esc_url( $this->config['smtp_wizard_url'] ),
];
}
/**
* Generate and output page HTML.
*
* @since 1.5.7
*/
public function output() {
echo '<div id="wpforms-admin-smtp" class="wrap wpforms-admin-wrap wpforms-admin-plugin-landing">';
$this->output_section_heading();
$this->output_section_screenshot();
$this->output_section_step_install();
$this->output_section_step_setup();
echo '</div>';
}
/**
* Generate and output heading section HTML.
*
* @since 1.5.7
*/
protected function output_section_heading() {
// Heading section.
printf(
'<section class="top">
<img class="img-top" src="%1$s" srcset="%2$s 2x" alt="%3$s"/>
<h1>%4$s</h1>
<p>%5$s</p>
</section>',
esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/wpforms-wpmailsmtp.png' ),
esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/wpforms-wpmailsmtp@2x.png' ),
esc_attr__( 'WPForms ♥ WP Mail SMTP', 'wpforms-lite' ),
esc_html__( 'Making Email Deliverability Easy for WordPress', 'wpforms-lite' ),
esc_html__( 'WP Mail SMTP fixes deliverability problems with your WordPress emails and form notifications. It\'s built by the same folks behind WPForms.', 'wpforms-lite' )
);
}
/**
* Generate and output screenshot section HTML.
*
* @since 1.5.7
*/
protected function output_section_screenshot() {
// Screenshot section.
printf(
'<section class="screenshot">
<div class="cont">
<img src="%1$s" alt="%2$s"/>
<a href="%3$s" class="hover" data-lity></a>
</div>
<ul>
<li>%4$s</li>
<li>%5$s</li>
<li>%6$s</li>
<li>%7$s</li>
</ul>
</section>',
esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/screenshot-tnail.png?ver=' . WPFORMS_VERSION ),
esc_attr__( 'WP Mail SMTP screenshot', 'wpforms-lite' ),
esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/screenshot-full.png?ver=' . WPFORMS_VERSION ),
esc_html__( 'Improves email deliverability in WordPress.', 'wpforms-lite' ),
esc_html__( 'Used by 2+ million websites.', 'wpforms-lite' ),
esc_html__( 'Free mailers: SendLayer, SMTP.com, Sendinblue, Google Workspace / Gmail, Mailgun, Postmark, SendGrid.', 'wpforms-lite' ),
esc_html__( 'Pro mailers: Amazon SES, Microsoft 365 / Outlook.com, Zoho Mail.', 'wpforms-lite' )
);
}
/**
* Generate and output step 'Install' section HTML.
*
* @since 1.5.7
*/
protected function output_section_step_install() {
$step = $this->get_data_step_install();
if ( empty( $step ) ) {
return;
}
$button_format = '<button class="button %3$s" data-plugin="%1$s" data-action="%4$s">%2$s</button>';
$button_allowed_html = [
'button' => [
'class' => true,
'data-plugin' => true,
'data-action' => true,
],
];
if (
! $this->output_data['plugin_installed'] &&
! $this->output_data['pro_plugin_installed'] &&
! wpforms_can_install( 'plugin' )
) {
$button_format = '<a class="link" href="%1$s" target="_blank" rel="nofollow noopener">%2$s <span aria-hidden="true" class="dashicons dashicons-external"></span></a>';
$button_allowed_html = [
'a' => [
'class' => true,
'href' => true,
'target' => true,
'rel' => true,
],
'span' => [
'class' => true,
'aria-hidden' => true,
],
];
}
$button = sprintf( $button_format, esc_attr( $step['plugin'] ), esc_html( $step['button_text'] ), esc_attr( $step['button_class'] ), esc_attr( $step['button_action'] ) );
printf(
'<section class="step step-install">
<aside class="num">
<img src="%1$s" alt="%2$s" />
<i class="loader hidden"></i>
</aside>
<div>
<h2>%3$s</h2>
<p>%4$s</p>
%5$s
</div>
</section>',
esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . $step['icon'] ),
esc_attr__( 'Step 1', 'wpforms-lite' ),
esc_html( $step['heading'] ),
esc_html( $step['description'] ),
wp_kses( $button, $button_allowed_html )
);
}
/**
* Generate and output step 'Setup' section HTML.
*
* @since 1.5.7
*/
protected function output_section_step_setup() {
$step = $this->get_data_step_setup();
if ( empty( $step ) ) {
return;
}
printf(
'<section class="step step-setup %1$s">
<aside class="num">
<img src="%2$s" alt="%3$s" />
<i class="loader hidden"></i>
</aside>
<div>
<h2>%4$s</h2>
<p>%5$s</p>
<button class="button %6$s" data-url="%7$s">%8$s</button>
</div>
</section>',
esc_attr( $step['section_class'] ),
esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . $step['icon'] ),
esc_attr__( 'Step 2', 'wpforms-lite' ),
esc_html__( 'Set Up WP Mail SMTP', 'wpforms-lite' ),
esc_html__( 'Select and configure your mailer.', 'wpforms-lite' ),
esc_attr( $step['button_class'] ),
esc_url( admin_url( $this->config['smtp_wizard_url'] ) ),
esc_html( $step['button_text'] )
);
}
/**
* Step 'Install' data.
*
* @since 1.5.7
*
* @return array Step data.
*/
protected function get_data_step_install() {
$step = [];
$step['heading'] = esc_html__( 'Install and Activate WP Mail SMTP', 'wpforms-lite' );
$step['description'] = esc_html__( 'Install WP Mail SMTP from the WordPress.org plugin repository.', 'wpforms-lite' );
$this->output_data['all_plugins'] = get_plugins();
$this->output_data['plugin_installed'] = array_key_exists( $this->config['lite_plugin'], $this->output_data['all_plugins'] );
$this->output_data['pro_plugin_installed'] = array_key_exists( $this->config['pro_plugin'], $this->output_data['all_plugins'] );
$this->output_data['plugin_activated'] = false;
$this->output_data['plugin_setup'] = false;
if ( ! $this->output_data['plugin_installed'] && ! $this->output_data['pro_plugin_installed'] ) {
$step['icon'] = 'step-1.svg';
$step['button_text'] = esc_html__( 'Install WP Mail SMTP', 'wpforms-lite' );
$step['button_class'] = 'button-primary';
$step['button_action'] = 'install';
$step['plugin'] = $this->config['lite_download_url'];
if ( ! wpforms_can_install( 'plugin' ) ) {
$step['heading'] = esc_html__( 'WP Mail SMTP', 'wpforms-lite' );
$step['description'] = '';
$step['button_text'] = esc_html__( 'WP Mail SMTP on WordPress.org', 'wpforms-lite' );
$step['plugin'] = $this->config['lite_wporg_url'];
}
} else {
$this->output_data['plugin_activated'] = $this->is_smtp_activated();
$this->output_data['plugin_setup'] = $this->is_smtp_configured();
$step['icon'] = $this->output_data['plugin_activated'] ? 'step-complete.svg' : 'step-1.svg';
$step['button_text'] = $this->output_data['plugin_activated'] ? esc_html__( 'WP Mail SMTP Installed & Activated', 'wpforms-lite' ) : esc_html__( 'Activate WP Mail SMTP', 'wpforms-lite' );
$step['button_class'] = $this->output_data['plugin_activated'] ? 'grey disabled' : 'button-primary';
$step['button_action'] = $this->output_data['plugin_activated'] ? '' : 'activate';
$step['plugin'] = $this->output_data['pro_plugin_installed'] ? $this->config['pro_plugin'] : $this->config['lite_plugin'];
}
return $step;
}
/**
* Step 'Setup' data.
*
* @since 1.5.7
*
* @return array Step data.
*/
protected function get_data_step_setup() {
$step = [
'icon' => 'step-2.svg',
];
if ( $this->output_data['plugin_activated'] ) {
$step['section_class'] = '';
$step['button_class'] = 'button-primary';
$step['button_text'] = esc_html__( 'Open Setup Wizard', 'wpforms-lite' );
} else {
$step['section_class'] = 'grey';
$step['button_class'] = 'grey disabled';
$step['button_text'] = esc_html__( 'Start Setup', 'wpforms-lite' );
}
if ( $this->output_data['plugin_setup'] ) {
$step['icon'] = 'step-complete.svg';
$step['button_text'] = esc_html__( 'Go to SMTP settings', 'wpforms-lite' );
}
return $step;
}
/**
* Ajax endpoint. Check plugin setup status.
* Used to properly init step 'Setup' section after completing step 'Install'.
*
* @since 1.5.7
*/
public function ajax_check_plugin_status() {
// Security checks.
if (
! check_ajax_referer( 'wpforms-admin', 'nonce', false ) ||
! wpforms_current_user_can()
) {
wp_send_json_error(
[
'error' => esc_html__( 'You do not have permission.', 'wpforms-lite' ),
]
);
}
$result = [];
if ( ! $this->is_smtp_activated() ) {
wp_send_json_error(
[
'error' => esc_html__( 'Plugin unavailable.', 'wpforms-lite' ),
]
);
}
$result['setup_status'] = (int) $this->is_smtp_configured();
$result['license_level'] = wp_mail_smtp()->get_license_type();
// Prevent redirect to the WP Mail SMTP Setup Wizard on the fresh installs.
// We need this workaround since WP Mail SMTP doesn't check whether the mailer is already configured when redirecting to the Setup Wizard on the first run.
if ( $result['setup_status'] > 0 ) {
update_option( 'wp_mail_smtp_activation_prevent_redirect', true );
}
wp_send_json_success( $result );
}
/**
* Get $phpmailer instance.
*
* @since 1.5.7
* @since 1.6.1.2 Conditionally returns $phpmailer v5 or v6.
*
* @return \PHPMailer|\PHPMailer\PHPMailer\PHPMailer Instance of PHPMailer.
*/
protected function get_phpmailer() {
if ( version_compare( get_bloginfo( 'version' ), '5.5-alpha', '<' ) ) {
$phpmailer = $this->get_phpmailer_v5();
} else {
$phpmailer = $this->get_phpmailer_v6();
}
return $phpmailer;
}
/**
* Get $phpmailer v5 instance.
*
* @since 1.6.1.2
*
* @return \PHPMailer Instance of PHPMailer.
*/
private function get_phpmailer_v5() {
global $phpmailer;
if ( ! ( $phpmailer instanceof \PHPMailer ) ) {
require_once ABSPATH . WPINC . '/class-phpmailer.php';
require_once ABSPATH . WPINC . '/class-smtp.php';
$phpmailer = new \PHPMailer( true ); // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
}
return $phpmailer;
}
/**
* Get $phpmailer v6 instance.
*
* @since 1.6.1.2
*
* @return \PHPMailer\PHPMailer\PHPMailer Instance of PHPMailer.
*/
private function get_phpmailer_v6() {
global $phpmailer;
if ( ! ( $phpmailer instanceof \PHPMailer\PHPMailer\PHPMailer ) ) {
require_once ABSPATH . WPINC . '/PHPMailer/PHPMailer.php';
require_once ABSPATH . WPINC . '/PHPMailer/SMTP.php';
require_once ABSPATH . WPINC . '/PHPMailer/Exception.php';
$phpmailer = new \PHPMailer\PHPMailer\PHPMailer( true ); // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
}
return $phpmailer;
}
/**
* Whether WP Mail SMTP plugin configured or not.
*
* @since 1.5.7
*
* @return bool True if some mailer is selected and configured properly.
*/
protected function is_smtp_configured() {
if ( ! $this->is_smtp_activated() ) {
return false;
}
$phpmailer = $this->get_phpmailer();
$mailer = \WPMailSMTP\Options::init()->get( 'mail', 'mailer' );
return ! empty( $mailer ) &&
$mailer !== 'mail' &&
wp_mail_smtp()->get_providers()->get_mailer( $mailer, $phpmailer )->is_mailer_complete();
}
/**
* Whether WP Mail SMTP plugin active or not.
*
* @since 1.5.7
*
* @return bool True if SMTP plugin is active.
*/
protected function is_smtp_activated() {
return function_exists( 'wp_mail_smtp' ) && ( is_plugin_active( $this->config['lite_plugin'] ) || is_plugin_active( $this->config['pro_plugin'] ) );
}
/**
* Redirect to SMTP settings page.
*
* @since 1.5.7
*/
public function redirect_to_smtp_settings() {
// Redirect to SMTP plugin if it is activated.
if ( $this->is_smtp_configured() ) {
wp_safe_redirect( admin_url( $this->config['smtp_settings_url'] ) );
exit;
}
}
}