574 lines
19 KiB
PHP
574 lines
19 KiB
PHP
<?php
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use EasyWPSMTP\Helpers\Helpers;
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use EasyWPSMTP\Migrations\DeprecatedOptionsMigration;
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use EasyWPSMTP\Options;
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use PHPMailer\PHPMailer\PHPMailer;
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class EasyWPSMTP {
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public $opts;
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public $plugin_file;
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public $plugin_url;
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public $plugin_path;
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protected static $instance = null;
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public static $reset_log_str = "Easy WP SMTP debug log file\r\n\r\n";
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public function __construct() {
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$this->opts = [];
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$this->plugin_file = EasyWPSMTP_PLUGIN_FILE;
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$this->plugin_url = rtrim( plugin_dir_url( $this->plugin_file ), '/\\' );
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$this->plugin_path = rtrim( plugin_dir_path( $this->plugin_file ), '/\\' );
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require_once $this->plugin_path . '/inc/deprecated/functions.php';
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require_once $this->plugin_path . '/inc/deprecated/class-easywpsmtp-utils.php';
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if ( is_admin() && ! ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {
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require_once $this->plugin_path . '/inc/deprecated/class-easywpsmtp-admin.php';
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}
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add_action( 'plugins_loaded', [ $this, 'init' ] );
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}
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public static function get_instance() {
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if ( null === self::$instance ) {
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self::$instance = new self();
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}
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return self::$instance;
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}
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public function init() {
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if ( Options::init()->get( 'deprecated', 'debug_log_enabled' ) ) {
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add_filter( 'wp_mail', array( $this, 'wp_mail' ), 2147483647 );
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add_action( 'wp_mail_failed', array( $this, 'wp_mail_failed' ) );
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add_action( 'admin_init', array( $this, 'admin_init' ) );
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}
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}
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public function wp_mail( $args ) {
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$options = Options::init();
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$is_domain_blocked = Helpers::is_domain_blocked();
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//Check if the "to" field has multiple emails in an array.
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$to_address = "";
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if ( ! empty( $args['to'] ) ) {
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$to_address = is_array( $args['to'] ) ? implode( ' ; ', $args['to'] ) : $args['to'];
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}
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if ( $is_domain_blocked && $options->get( 'general', 'domain_check_do_not_send' ) ) {
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$domain = wp_parse_url( get_site_url(), PHP_URL_HOST );
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$this->log(
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"\r\n------------------------------------------------------------------------------------------------------\r\n" .
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'Domain check failed: website domain (' . $domain . ") is not in allowed domains list.\r\n" .
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"Following email not sent (block all emails option is enabled):\r\n" .
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'To: ' . $to_address . '; Subject: ' . $args['subject'] . "\r\n" .
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"------------------------------------------------------------------------------------------------------\r\n\r\n"
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);
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} else if( $options->get( 'deprecated', 'debug_log_enabled' ) ) {
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//Prepare the debug logging line
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$line = sprintf(
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'Headers: %s, To: %s, Subject: %s',
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! empty( $args['headers'] && is_array( $args['headers'] ) ) ? implode( ' | ', $args['headers'] ) : '',
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! empty( $args['to'] ) ? $to_address : '',
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! empty( $args['subject'] ) ? $args['subject'] : ''
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);
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$this->log( $line . "\r\n" );
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}
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if ( $is_domain_blocked && ! $options->get( 'general', 'domain_check_do_not_send' ) ) {
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$domain = wp_parse_url( get_site_url(), PHP_URL_HOST );
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$this->log(
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"\r\n------------------------------------------------------------------------------------------------------\r\n" .
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'Domain check failed: website domain (' . $domain . ") is not in allowed domains list.\r\n" .
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"SMTP settings won't be used.\r\n" .
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"------------------------------------------------------------------------------------------------------\r\n\r\n"
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);
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}
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return $args;
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}
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public function wp_mail_failed( $wp_error ) {
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if ( ! empty( $wp_error->errors ) && ! empty( $wp_error->errors['wp_mail_failed'] ) && is_array( $wp_error->errors['wp_mail_failed'] ) ) {
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$this->log( '*** ' . implode( ' | ', $wp_error->errors['wp_mail_failed'] ) . " ***\r\n" );
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}
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}
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public function init_smtp( &$phpmailer ) {
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//check if SMTP credentials have been configured.
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if ( ! $this->credentials_configured() ) {
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return;
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}
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//check if Domain Check enabled
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$domain = $this->is_domain_blocked();
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if ( false !== $domain ) {
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//domain check failed
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//let's check if we have block all emails option enabled
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if ( isset( $this->opts['block_all_emails'] ) && 1 === $this->opts['block_all_emails'] ) {
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// it's enabled. Let's use gag mailer class that would prevent emails from being sent out.
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require_once $this->plugin_path . '/inc/deprecated/class-easywpsmtp-gag-mailer.php';
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$phpmailer = new EasyWPSMTP_Gag_Mailer();
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}
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return;
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}
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/* Set the mailer type as per config above, this overrides the already called isMail method */
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$phpmailer->IsSMTP();
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if ( isset( $this->opts['force_from_name_replace'] ) && 1 === $this->opts['force_from_name_replace'] ) {
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$from_name = $this->opts['from_name_field'];
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} else {
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$from_name = ! empty( $phpmailer->FromName ) ? $phpmailer->FromName : $this->opts['from_name_field'];
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}
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$from_email = $this->opts['from_email_field'];
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//set ReplyTo option if needed
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//this should be set before SetFrom, otherwise might be ignored
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if ( ! empty( $this->opts['reply_to_email'] ) ) {
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if ( isset( $this->opts['sub_mode'] ) && 1 === $this->opts['sub_mode'] ) {
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if ( count( $phpmailer->getReplyToAddresses() ) >= 1 ) {
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// Substitute from_email_field with reply_to_email
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if ( array_key_exists( $this->opts['from_email_field'], $phpmailer->getReplyToAddresses() ) ) {
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$reply_to_emails = $phpmailer->getReplyToAddresses();
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unset( $reply_to_emails[ $this->opts['from_email_field'] ] );
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$phpmailer->clearReplyTos();
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foreach ( $reply_to_emails as $reply_to_email => $reply_to_name ) {
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$phpmailer->AddReplyTo( $reply_to_email, $reply_to_name );
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}
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$phpmailer->AddReplyTo( $this->opts['reply_to_email'], $from_name );
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}
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} else { // Reply-to array is empty so add reply_to_email
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$phpmailer->AddReplyTo( $this->opts['reply_to_email'], $from_name );
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}
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} else { // Default behaviour
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$phpmailer->AddReplyTo( $this->opts['reply_to_email'], $from_name );
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}
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}
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if ( ! empty( $this->opts['bcc_email'] ) ) {
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$bcc_emails = explode( ',', $this->opts['bcc_email'] );
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foreach ( $bcc_emails as $bcc_email ) {
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$bcc_email = trim( $bcc_email );
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$phpmailer->AddBcc( $bcc_email );
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}
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}
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// let's see if we have email ignore list populated
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if ( isset( $this->opts['email_ignore_list'] ) && ! empty( $this->opts['email_ignore_list'] ) ) {
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$emails_arr = explode( ',', $this->opts['email_ignore_list'] );
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$from = $phpmailer->From;
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$match_found = false;
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foreach ( $emails_arr as $email ) {
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if ( strtolower( trim( $email ) ) === strtolower( trim( $from ) ) ) {
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$match_found = true;
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break;
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}
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}
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if ( $match_found ) {
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//we should not override From and Fromname
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$from_email = $phpmailer->From;
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$from_name = $phpmailer->FromName;
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}
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}
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$phpmailer->From = $from_email;
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$phpmailer->FromName = $from_name;
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$phpmailer->SetFrom( $phpmailer->From, $phpmailer->FromName );
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//This should set Return-Path header for servers that are not properly handling it, but needs testing first
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//$phpmailer->Sender = $phpmailer->From;
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/* Set the SMTPSecure value */
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if ( 'none' !== $this->opts['smtp_settings']['type_encryption'] ) {
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$phpmailer->SMTPSecure = $this->opts['smtp_settings']['type_encryption'];
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}
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/* Set the other options */
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$phpmailer->Host = $this->opts['smtp_settings']['host'];
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$phpmailer->Port = $this->opts['smtp_settings']['port'];
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/* If we're using smtp auth, set the username & password */
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$phpmailer->SMTPAuth = false;
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if ( 'yes' === $this->opts['smtp_settings']['autentication'] ) {
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$phpmailer->SMTPAuth = true;
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$phpmailer->Username = $this->opts['smtp_settings']['username'];
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$phpmailer->Password = $this->get_password();
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}
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//PHPMailer 5.2.10 introduced this option. However, this might cause issues if the server is advertising TLS with an invalid certificate.
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$phpmailer->SMTPAutoTLS = false;
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if ( isset( $this->opts['smtp_settings']['insecure_ssl'] ) && false !== $this->opts['smtp_settings']['insecure_ssl'] ) {
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// Insecure SSL option enabled
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$phpmailer->SMTPOptions = array(
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'ssl' => array(
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'verify_peer' => false,
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'verify_peer_name' => false,
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'allow_self_signed' => true,
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),
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);
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}
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//set reasonable timeout
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$phpmailer->Timeout = 10;
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}
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public function test_mail( $to_email, $subject, $message ) {
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$ret = array();
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if ( ! $this->credentials_configured() ) {
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return false;
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}
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global $wp_version;
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if ( version_compare( $wp_version, '5.4.99' ) > 0 ) {
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require_once ABSPATH . WPINC . '/PHPMailer/PHPMailer.php';
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require_once ABSPATH . WPINC . '/PHPMailer/SMTP.php';
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require_once ABSPATH . WPINC . '/PHPMailer/Exception.php';
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$mail = new PHPMailer( true );
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} else {
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require_once ABSPATH . WPINC . '/class-phpmailer.php';
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$mail = new \PHPMailer( true );
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}
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try {
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$charset = get_bloginfo( 'charset' );
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$mail->CharSet = $charset;
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$from_name = $this->opts['from_name_field'];
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$from_email = $this->opts['from_email_field'];
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$mail->IsSMTP();
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// send plain text test email
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$mail->ContentType = 'text/plain';
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$mail->IsHTML( false );
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/* If using smtp auth, set the username & password */
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if ( 'yes' === $this->opts['smtp_settings']['autentication'] ) {
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$mail->SMTPAuth = true;
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$mail->Username = $this->opts['smtp_settings']['username'];
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$mail->Password = $this->get_password();
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}
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/* Set the SMTPSecure value, if set to none, leave this blank */
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if ( 'none' !== $this->opts['smtp_settings']['type_encryption'] ) {
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$mail->SMTPSecure = $this->opts['smtp_settings']['type_encryption'];
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}
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/* PHPMailer 5.2.10 introduced this option. However, this might cause issues if the server is advertising TLS with an invalid certificate. */
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$mail->SMTPAutoTLS = false;
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if ( isset( $this->opts['smtp_settings']['insecure_ssl'] ) && false !== $this->opts['smtp_settings']['insecure_ssl'] ) {
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// Insecure SSL option enabled
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$mail->SMTPOptions = array(
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'ssl' => array(
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'verify_peer' => false,
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'verify_peer_name' => false,
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'allow_self_signed' => true,
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),
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);
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}
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/* Set the other options */
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$mail->Host = $this->opts['smtp_settings']['host'];
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$mail->Port = $this->opts['smtp_settings']['port'];
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//Add reply-to if set in settings.
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if ( ! empty( $this->opts['reply_to_email'] ) ) {
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$mail->AddReplyTo( $this->opts['reply_to_email'], $from_name );
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}
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//Add BCC if set in settings.
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if ( ! empty( $this->opts['bcc_email'] ) ) {
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$bcc_emails = explode( ',', $this->opts['bcc_email'] );
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foreach ( $bcc_emails as $bcc_email ) {
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$bcc_email = trim( $bcc_email );
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$mail->AddBcc( $bcc_email );
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}
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}
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$mail->SetFrom( $from_email, $from_name );
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//This should set Return-Path header for servers that are not properly handling it, but needs testing first
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//$mail->Sender = $mail->From;
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$mail->Subject = $subject;
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$mail->Body = $message;
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$mail->AddAddress( $to_email );
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global $debug_msg;
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$debug_msg = '';
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$mail->Debugoutput = function ( $str, $level ) {
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global $debug_msg;
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$debug_msg .= $str;
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};
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$mail->SMTPDebug = 1;
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//set reasonable timeout
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$mail->Timeout = 10;
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/* Send mail and return result */
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$mail->Send();
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$mail->ClearAddresses();
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$mail->ClearAllRecipients();
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} catch ( \Exception $e ) {
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$ret['error'] = $mail->ErrorInfo;
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} catch ( \Throwable $e ) {
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$ret['error'] = $mail->ErrorInfo;
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}
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$ret['debug_log'] = $debug_msg;
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return $ret;
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}
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public function admin_init() {
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if ( current_user_can( 'manage_options' ) ) {
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if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
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add_action( 'wp_ajax_swpsmtp_clear_log', array( $this, 'clear_log' ) );
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}
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//view log file
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if ( isset( $_GET['swpsmtp_action'] ) ) {
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$options = Options::init();
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if ( 'view_log' === $_GET['swpsmtp_action'] ) {
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$log_file_root_path = $this->get_log_file_root_path();
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$log_file_name = $options->get('deprecated', 'debug_log_file_name');
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if ( empty( $log_file_name ) ) {
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//Nothing in the log file yet so nothing to show.
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wp_die( 'Nothing in the log file yet.' );
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}
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if ( ! file_exists( $log_file_root_path . $log_file_name ) ) {
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if ( $this->log( self::$reset_log_str ) === false ) {
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wp_die( esc_html( sprintf( 'Can\'t write to log file. Check if plugin directory (%s) is writeable.', $log_file_root_path ) ) );
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};
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}
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$logfile = fopen( $log_file_root_path . $log_file_name, 'rb' ); //phpcs:ignore
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if ( ! $logfile ) {
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wp_die( 'Can\'t open log file.' );
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}
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header( 'Content-Type: text/plain' );
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fpassthru( $logfile );
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die;
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}
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}
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}
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}
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public function admin_notices() {
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if ( ! $this->credentials_configured() ) {
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$settings_url = admin_url() . 'options-general.php?page=swpsmtp_settings';
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?>
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<div class="error">
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<p>
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<?php // translators: %s URL to the plugin's settings page.
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printf( __( 'Please configure your SMTP credentials in the <a href="%s">settings menu</a> in order to send email using Easy WP SMTP plugin.', 'easy-wp-smtp' ), esc_url( $settings_url ) );
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?>
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</p>
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</div>
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<?php
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}
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}
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public function get_log_file_path() {
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$log_file_name = 'logs' . DIRECTORY_SEPARATOR . '.' . uniqid( '', true ) . '.txt';
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$log_file_name = apply_filters( 'swpsmtp_log_file_path_override', $log_file_name );
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return $log_file_name;
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}
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private function get_log_file_root_path() {
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return apply_filters( 'easy_wp_mail_get_log_file_root_path', $this->plugin_path . '/' );
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}
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public function clear_log() {
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if ( ! check_ajax_referer( 'easy-wp-smtp-admin', 'nonce', false ) ) {
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echo esc_html( __( 'Nonce check failed.', 'easy-wp-smtp' ) );
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exit;
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};
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if ( ! current_user_can( 'manage_options' ) ) {
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echo esc_html( __( 'You are not allowed to do that.', 'easy-wp-smtp' ) );
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exit;
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};
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if ( $this->log( self::$reset_log_str, true ) !== false ) {
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echo '1';
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} else {
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echo esc_html( __( "Can't clear log - file is not writeable.", 'easy-wp-smtp' ) );
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}
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die;
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}
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public function log( $str, $overwrite = false ) {
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// Skip logging if deprecated options migration was not performed to prevent `easy_wp_smtp` option creation in DB.
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if ( DeprecatedOptionsMigration::get_current_version() < 1 ) {
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return true;
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}
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try {
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$options = Options::init();
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$log_file_root_path = $this->get_log_file_root_path();
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$log_file_name = '';
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if ( ! empty( $options->get( 'deprecated', 'debug_log_file_name' ) ) ) {
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$log_file_name = $options->get( 'deprecated', 'debug_log_file_name' );
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}
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if ( empty( $log_file_name ) || $overwrite ) {
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if ( ! empty( $log_file_name ) && file_exists( $log_file_root_path . $log_file_name ) ) {
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unlink( $log_file_root_path . $log_file_name );
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}
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$log_file_name = $this->get_log_file_path();
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$options->set(
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[
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'deprecated' => [
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'debug_log_file_name' => $log_file_name
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]
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],
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false,
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false
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);
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file_put_contents( $log_file_root_path . $log_file_name, self::$reset_log_str ); //phpcs:ignore
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}
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//Timestamp the log output
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$str = '[' . date( 'm/d/Y g:i:s A' ) . '] - ' . $str;
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//Write to the log file
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return ( file_put_contents( $log_file_root_path . $log_file_name, $str, ( ! $overwrite ? FILE_APPEND : 0 ) ) ); //phpcs:ignore
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} catch ( \Exception $e ) {
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return false;
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}
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}
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public function plugin_action_links( $links, $file ) {
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if ( plugin_basename( $this->plugin_file ) === $file ) {
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$settings_link = '<a href="options-general.php?page=swpsmtp_settings">' . __( 'Settings', 'easy-wp-smtp' ) . '</a>';
|
|
array_unshift( $links, $settings_link );
|
|
}
|
|
return $links;
|
|
}
|
|
|
|
public function register_plugin_links( $links, $file ) {
|
|
if ( plugin_basename( $this->plugin_file ) === $file ) {
|
|
$links[] = '<a href="options-general.php?page=swpsmtp_settings">' . __( 'Settings', 'easy-wp-smtp' ) . '</a>';
|
|
}
|
|
return $links;
|
|
}
|
|
|
|
public function plugins_loaded_handler() {
|
|
load_plugin_textdomain( 'easy-wp-smtp', false, dirname( plugin_basename( $this->plugin_file ) ) . '/languages/' );
|
|
}
|
|
|
|
public function is_domain_blocked() {
|
|
|
|
return Helpers::is_domain_blocked();
|
|
}
|
|
|
|
public function get_password() {
|
|
|
|
return Options::init()->get( 'smtp', 'pass' );
|
|
}
|
|
|
|
public function encrypt_password( $pass ) {
|
|
if ( '' === $pass ) {
|
|
return '';
|
|
}
|
|
|
|
return $this->get_password();
|
|
}
|
|
|
|
public function credentials_configured() {
|
|
$credentials_configured = true;
|
|
if ( empty( Options::init()->get( 'mail', 'from_email' ) ) ) {
|
|
$credentials_configured = false;
|
|
}
|
|
if ( empty( Options::init()->get( 'mail', 'from_name' ) ) ) {
|
|
$credentials_configured = false;
|
|
}
|
|
return $credentials_configured;
|
|
}
|
|
|
|
public function activate() {
|
|
$swpsmtp_options_default = array(
|
|
'from_email_field' => '',
|
|
'from_name_field' => '',
|
|
'force_from_name_replace' => 0,
|
|
'sub_mode' => 0,
|
|
'smtp_settings' => array(
|
|
'host' => 'smtp.example.com',
|
|
'type_encryption' => 'none',
|
|
'port' => 25,
|
|
'autentication' => 'yes',
|
|
'username' => '',
|
|
'password' => '',
|
|
),
|
|
);
|
|
|
|
/* install the default plugin options if needed */
|
|
if ( empty( $this->opts ) ) {
|
|
$this->opts = $swpsmtp_options_default;
|
|
}
|
|
$this->opts = array_merge( $swpsmtp_options_default, $this->opts );
|
|
// reset log file
|
|
$this->log( self::$reset_log_str, true );
|
|
update_option( 'swpsmtp_options', $this->opts, 'yes' );
|
|
//add current domain to allowed domains list
|
|
if ( ! isset( $this->opts['allowed_domains'] ) ) {
|
|
//TODO: Change parse_url() to wp_parse_url() and bump required WP version to 4.4.0
|
|
$domain = parse_url( get_site_url(), PHP_URL_HOST ); //phpcs:ignore
|
|
if ( $domain ) {
|
|
$this->opts['allowed_domains'] = base64_encode( $domain ); //phpcs:ignore
|
|
update_option( 'swpsmtp_options', $this->opts );
|
|
}
|
|
} else { // let's check if existing value should be base64 encoded
|
|
if ( ! empty( $this->opts['allowed_domains'] ) ) {
|
|
if ( EasyWPSMTP_Utils::base64_decode_maybe( $this->opts['allowed_domains'] ) === $this->opts['allowed_domains'] ) {
|
|
$this->opts['allowed_domains'] = base64_encode( $this->opts['allowed_domains'] ); //phpcs:ignore
|
|
update_option( 'swpsmtp_options', $this->opts );
|
|
}
|
|
}
|
|
}
|
|
// Encrypt password if needed
|
|
if ( ! get_option( 'swpsmtp_pass_encrypted' ) ) {
|
|
if ( extension_loaded( 'openssl' ) ) {
|
|
if ( '' !== $this->opts['smtp_settings']['password'] ) {
|
|
$this->opts['smtp_settings']['password'] = $this->encrypt_password( $this->get_password() );
|
|
update_option( 'swpsmtp_options', $this->opts );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function deactivate() {
|
|
// reset log file
|
|
$this->log( self::$reset_log_str, true );
|
|
}
|
|
|
|
public function self_destruct_handler() {
|
|
$err_msg = __( 'Please refresh the page and try again.', 'easy-wp-smtp' );
|
|
$trans = get_transient( 'easy_wp_smtp_sd_code' );
|
|
if ( empty( $trans ) ) {
|
|
echo esc_html( $err_msg );
|
|
exit;
|
|
}
|
|
$sd_code = isset( $_POST['sd_code'] ) ? sanitize_text_field( stripslashes ( $_POST['sd_code'] ) ) : '';
|
|
if ( $trans !== $sd_code ) {
|
|
echo esc_html( $err_msg );
|
|
exit;
|
|
}
|
|
$this->log( self::$reset_log_str, true );
|
|
delete_site_option( 'swpsmtp_options' );
|
|
delete_option( 'swpsmtp_options' );
|
|
delete_site_option( 'smtp_test_mail' );
|
|
delete_option( 'smtp_test_mail' );
|
|
delete_site_option( 'swpsmtp_pass_encrypted' );
|
|
delete_option( 'swpsmtp_pass_encrypted' );
|
|
delete_option( 'swpsmtp_enc_key' );
|
|
echo 1;
|
|
deactivate_plugins( __FILE__ );
|
|
exit;
|
|
}
|
|
}
|
|
|
|
// Init.
|
|
EasyWPSMTP::get_instance();
|