mirror of
https://github.com/itflow-org/itflow
synced 2026-11-11 15:07:24 +00:00
513 lines
23 KiB
PHP
513 lines
23 KiB
PHP
<?php
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// Set working directory to the directory this cron script lives at.
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chdir(dirname(__FILE__));
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// Ensure we're running from command line
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if (php_sapi_name() !== 'cli') {
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die("This script must be run from the command line.\n");
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}
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// Prevent overlapping runs of this script
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$cron_lock_script = __FILE__;
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require_once "includes/cron_lock.php";
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require_once "../config.php";
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require_once "../includes/inc_set_timezone.php";
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require_once "../functions.php";
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require_once "../libs/vendor/autoload.php";
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// PHP Mailer Libs
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require_once "../libs/PHPMailer/src/Exception.php";
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require_once "../libs/PHPMailer/src/PHPMailer.php";
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require_once "../libs/PHPMailer/src/SMTP.php";
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require_once "../libs/PHPMailer/src/OAuthTokenProvider.php";
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require_once "../libs/PHPMailer/src/OAuth.php";
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use PHPMailer\PHPMailer\PHPMailer;
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use PHPMailer\PHPMailer\Exception;
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use PHPMailer\PHPMailer\OAuthTokenProvider;
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if (!defined('GOOGLE_OAUTH_TOKEN_URL')) {
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define('GOOGLE_OAUTH_TOKEN_URL', 'https://oauth2.googleapis.com/token');
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}
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if (!defined('MICROSOFT_OAUTH_BASE_URL')) {
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define('MICROSOFT_OAUTH_BASE_URL', 'https://login.microsoftonline.com/');
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}
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/** =======================================================================
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* XOAUTH2 Token Provider for PHPMailer (simple “static” provider)
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* ======================================================================= */
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class StaticTokenProvider implements OAuthTokenProvider {
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private string $email;
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private string $accessToken;
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public function __construct(string $email, string $accessToken) {
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$this->email = $email;
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$this->accessToken = $accessToken;
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}
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public function getOauth64(): string {
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$auth = "user={$this->email}\x01auth=Bearer {$this->accessToken}\x01\x01";
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return base64_encode($auth);
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}
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}
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/** =======================================================================
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* Load settings
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* ======================================================================= */
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$sql_settings = mysqli_query($mysqli, "SELECT config_enable_cron, config_mail_oauth_access_token,
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config_mail_oauth_access_token_expires_at, config_mail_oauth_client_id,
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config_mail_oauth_client_secret, config_mail_oauth_refresh_token,
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config_mail_oauth_tenant_id, config_smtp_encryption, config_smtp_host,
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config_smtp_password, config_smtp_port, config_smtp_provider, config_smtp_username FROM settings WHERE company_id = 1");
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$row = mysqli_fetch_assoc($sql_settings);
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$config_enable_cron = intval($row['config_enable_cron']);
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// SMTP baseline
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$config_smtp_host = $row['config_smtp_host'];
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$config_smtp_username = $row['config_smtp_username'];
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$config_smtp_password = $row['config_smtp_password'];
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$config_smtp_port = intval($row['config_smtp_port']);
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$config_smtp_encryption = $row['config_smtp_encryption'];
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// SMTP provider + shared OAuth fields
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$config_smtp_provider = $row['config_smtp_provider']; // 'standard_smtp' | 'google_oauth' | 'microsoft_oauth'
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$config_mail_oauth_client_id = $row['config_mail_oauth_client_id'] ?? '';
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$config_mail_oauth_client_secret = $row['config_mail_oauth_client_secret'] ?? '';
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$config_mail_oauth_tenant_id = $row['config_mail_oauth_tenant_id'] ?? '';
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$config_mail_oauth_refresh_token = $row['config_mail_oauth_refresh_token'] ?? '';
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$config_mail_oauth_access_token = $row['config_mail_oauth_access_token'] ?? '';
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$config_mail_oauth_access_token_expires_at = $row['config_mail_oauth_access_token_expires_at'] ?? '';
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if ($config_enable_cron == 0) {
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logApp("Cron-Mail-Queue", "error", "Cron Mail Queue unable to run - cron not enabled in admin settings.");
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cronJobStop("Cron: is not enabled -- Quitting..");
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}
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if (empty($config_smtp_provider)) {
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logApp("Cron-Mail-Queue", "info", "SMTP sending skipped: provider not configured.");
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cronJobStop();
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}
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/** =======================================================================
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* Mail OAuth helpers + sender function
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* ======================================================================= */
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function tokenIsExpired(?string $expires_at): bool {
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if (empty($expires_at)) {
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return true;
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}
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$ts = strtotime($expires_at);
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if ($ts === false) {
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return true;
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}
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return ($ts - 60) <= time();
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}
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function persistMailOauthTokens(string $access_token, string $expires_at, ?string $refresh_token = null): void {
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global $mysqli;
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$access_token_esc = mysqli_real_escape_string($mysqli, $access_token);
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$expires_at_esc = mysqli_real_escape_string($mysqli, $expires_at);
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$refresh_sql = '';
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if (!empty($refresh_token)) {
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$refresh_token_esc = mysqli_real_escape_string($mysqli, $refresh_token);
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$refresh_sql = ", config_mail_oauth_refresh_token = '{$refresh_token_esc}'";
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}
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mysqli_query($mysqli, "UPDATE settings SET config_mail_oauth_access_token = '{$access_token_esc}', config_mail_oauth_access_token_expires_at = '{$expires_at_esc}'{$refresh_sql} WHERE company_id = 1");
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}
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function refreshMailOauthAccessToken(string $provider, string $oauth_client_id, string $oauth_client_secret, string $oauth_tenant_id, string $oauth_refresh_token): ?array {
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$result = null;
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$response = null;
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if (!empty($oauth_client_id) && !empty($oauth_client_secret) && !empty($oauth_refresh_token)) {
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if ($provider === 'google_oauth') {
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$response = httpFormPost(GOOGLE_OAUTH_TOKEN_URL, [
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'client_id' => $oauth_client_id,
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'client_secret' => $oauth_client_secret,
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'refresh_token' => $oauth_refresh_token,
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'grant_type' => 'refresh_token',
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]);
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} elseif ($provider === 'microsoft_oauth' && !empty($oauth_tenant_id)) {
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$token_url = MICROSOFT_OAUTH_BASE_URL . rawurlencode($oauth_tenant_id) . "/oauth2/v2.0/token";
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$response = httpFormPost($token_url, [
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'client_id' => $oauth_client_id,
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'client_secret' => $oauth_client_secret,
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'refresh_token' => $oauth_refresh_token,
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'grant_type' => 'refresh_token',
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]);
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}
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}
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if (is_array($response) && !empty($response['ok'])) {
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$json = json_decode($response['body'], true);
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if (is_array($json) && !empty($json['access_token'])) {
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$expires_at = date('Y-m-d H:i:s', time() + (int)($json['expires_in'] ?? 3600));
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$result = [
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'access_token' => $json['access_token'],
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'expires_at' => $expires_at,
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'refresh_token' => $json['refresh_token'] ?? null,
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];
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}
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}
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return $result;
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}
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function resolveMailOauthAccessToken(string $provider, string $oauth_client_id, string $oauth_client_secret, string $oauth_tenant_id, string $oauth_refresh_token, string $oauth_access_token, string $oauth_access_token_expires_at): ?string {
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if (!empty($oauth_access_token) && !tokenIsExpired($oauth_access_token_expires_at)) {
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return $oauth_access_token;
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}
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$tokens = refreshMailOauthAccessToken($provider, $oauth_client_id, $oauth_client_secret, $oauth_tenant_id, $oauth_refresh_token);
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if (!is_array($tokens) || empty($tokens['access_token']) || empty($tokens['expires_at'])) {
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return null;
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}
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persistMailOauthTokens($tokens['access_token'], $tokens['expires_at'], $tokens['refresh_token'] ?? null);
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return $tokens['access_token'];
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}
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function sendQueueEmail(
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string $provider,
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string $host,
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int $port,
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string $encryption,
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string $username,
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string $password,
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string $from_email,
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string $from_name,
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string $to_email,
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string $to_name,
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string $subject,
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string $html_body,
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string $ics_str,
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string $attachments_json,
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string $oauth_client_id,
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string $oauth_client_secret,
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string $oauth_tenant_id,
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string $oauth_refresh_token,
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string $oauth_access_token,
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string $oauth_access_token_expires_at
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) {
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// Google and Microsoft each expose exactly one XOAUTH2 SMTP endpoint, so the
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// stored host/port/encryption are overridden rather than used as a fallback -
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// the same thing cron/ticket_email_parser.php already does on the IMAP side.
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//
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// These used to apply only when the columns were blank, which quietly broke
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// every install that moved from Standard SMTP to OAuth: the old server is
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// still sitting in config_smtp_host/port/encryption, the settings page hides
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// those fields for OAuth providers so there is no way to clear them, and the
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// send then pointed an M365 bearer token at the previous mail host. Only a
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// fresh install, where the columns happened to be empty, ever worked.
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if ($provider === 'google_oauth') {
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$host = 'smtp.gmail.com';
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$port = 587;
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$encryption = 'tls';
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if (!$username) $username = $from_email;
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} elseif ($provider === 'microsoft_oauth') {
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$host = 'smtp.office365.com';
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$port = 587;
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$encryption = 'tls';
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if (!$username) $username = $from_email;
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}
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$mail = new PHPMailer(true);
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$mail->CharSet = "UTF-8";
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$mail->SMTPDebug = 0;
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$mail->isSMTP();
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$mail->Host = $host;
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$mail->Port = $port;
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// Bound the SMTP conversation. Without this an unresponsive mail server can
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// hold the cron lock open indefinitely and stall the whole queue.
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$mail->Timeout = 30;
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$enc = strtolower($encryption);
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if ($enc === '' || $enc === 'none') {
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$mail->SMTPAutoTLS = false;
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$mail->SMTPSecure = false;
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$mail->SMTPOptions = ['ssl' => ['verify_peer' => false, 'verify_peer_name' => false]];
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} else {
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$mail->SMTPSecure = $enc; // 'tls' | 'ssl'
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}
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if ($provider === 'google_oauth' || $provider === 'microsoft_oauth') {
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// XOAUTH2
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$mail->SMTPAuth = true;
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$mail->AuthType = 'XOAUTH2';
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$mail->Username = $username;
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$access_token = resolveMailOauthAccessToken(
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$provider,
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trim($oauth_client_id),
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trim($oauth_client_secret),
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trim($oauth_tenant_id),
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trim($oauth_refresh_token),
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trim($oauth_access_token),
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trim($oauth_access_token_expires_at)
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);
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if (empty($access_token)) {
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throw new Exception("Missing OAuth access token for XOAUTH2 SMTP.");
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}
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$mail->setOAuth(new StaticTokenProvider($username, $access_token));
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} else {
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// Standard SMTP (with or without auth)
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$mail->SMTPAuth = !empty($username);
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$mail->Username = $username ?: '';
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$mail->Password = $password ?: '';
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}
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// Recipients & content
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$mail->setFrom($from_email, $from_name);
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$mail->addAddress($to_email, $to_name);
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$mail->isHTML(true);
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$mail->Subject = $subject;
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$mail->Body = $html_body;
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// A calendar invitation or cancellation goes in as its own text/calendar part
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// beside the HTML - the way calendar apps send them, and the only way Outlook
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// shows one as a meeting rather than a file. PHPMailer only builds that part
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// when there are no file attachments, so anything else (and a published
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// event to add) travels as an attached invite.ics.
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if (!empty($ics_str)) {
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if (preg_match('/^METHOD:(REQUEST|CANCEL)\r?$/m', $ics_str) && empty($attachments_json)) {
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$mail->Ical = $ics_str;
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$mail->AltBody = $mail->html2text($html_body);
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} else {
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$mail->addStringAttachment($ics_str, 'invite.ics', 'base64', 'text/calendar');
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}
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}
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// File attachments arrive as a manifest of app-root-relative paths. Each one is
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// resolved and confirmed to still be inside uploads/ before it is attached - the
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// same guard the ticket attachment download endpoints apply - and a file that
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// has been deleted since the message was queued is simply skipped.
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if (!empty($attachments_json)) {
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$attachment_manifest = json_decode($attachments_json, true);
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$uploads_base = realpath(__DIR__ . '/../uploads');
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if (is_array($attachment_manifest) && $uploads_base !== false) {
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foreach ($attachment_manifest as $attachment) {
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if (empty($attachment['path']) || empty($attachment['name'])) {
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continue;
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}
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$attachment_path = realpath(__DIR__ . '/../' . $attachment['path']);
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if ($attachment_path === false || strpos($attachment_path, $uploads_base) !== 0) {
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continue;
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}
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$mail->addAttachment($attachment_path, basename($attachment['name']));
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}
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}
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}
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$mail->send();
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return true;
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}
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/** =======================================================================
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* RECOVER: status = 1 (Sending) left behind by a run that died
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*
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* Nothing else in the codebase ever selects status 1, so without this a row
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* claimed by a run that was killed mid-send stays 'Sending' forever and is never
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* delivered. The cron lock above guarantees no other run of this script is in
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* progress, so any row still sitting at status 1 is by definition orphaned and
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* safe to reclaim. It is moved to failed rather than queued so it inherits the
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* retry pass's 30 minute backoff and attempt cap instead of retrying instantly.
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*
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* This can re-send a message that did go out but died before being marked sent.
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* That trade is deliberate: a duplicate is recoverable, an invoice that silently
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* never arrives is not.
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* ======================================================================= */
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mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_failed_at = NOW(), email_attempts = email_attempts + 1 WHERE email_status = 1");
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$orphaned_emails = mysqli_affected_rows($mysqli);
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if ($orphaned_emails > 0) {
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logApp("Cron-Mail-Queue", "warning", "Recovered $orphaned_emails email(s) left in a sending state by a previous run - queued for retry.");
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}
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/** =======================================================================
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* SEND: status = 0 (Queued)
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* ======================================================================= */
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$sql_queue = mysqli_query($mysqli, "SELECT email_attachments, email_cal_str, email_content, email_from, email_from_name, email_id,
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email_recipient, email_recipient_name, email_subject FROM email_queue WHERE email_status = 0 AND email_queued_at <= NOW()");
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if (mysqli_num_rows($sql_queue) > 0) {
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while ($rowq = mysqli_fetch_assoc($sql_queue)) {
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$email_id = (int)$rowq['email_id'];
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$email_from = $rowq['email_from'];
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$email_from_name = $rowq['email_from_name'];
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$email_recipient = $rowq['email_recipient'];
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$email_recipient_name = $rowq['email_recipient_name'];
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$email_subject = $rowq['email_subject'];
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$email_content = $rowq['email_content'];
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$email_ics_str = $rowq['email_cal_str'];
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$email_attachments = $rowq['email_attachments'];
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// Check sender
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if (!filter_var($email_from, FILTER_VALIDATE_EMAIL)) {
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$email_from_logging = escapeSql($rowq['email_from']);
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mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_attempts = 99 WHERE email_id = $email_id");
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logApp("Cron-Mail-Queue", "Error", "Failed to send email #$email_id due to invalid sender address: $email_from_logging - check configuration in settings.");
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appNotify("Mail", "Failed to send email #$email_id due to invalid sender address");
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continue;
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}
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// Claim the row - the conditional UPDATE is the lock. If another run already took
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// this email, skip it rather than sending the client a second copy.
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mysqli_query($mysqli, "UPDATE email_queue SET email_status = 1 WHERE email_id = $email_id AND email_status = 0");
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if (mysqli_affected_rows($mysqli) !== 1) {
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continue;
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}
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// Basic recipient syntax check
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if (!filter_var($email_recipient, FILTER_VALIDATE_EMAIL)) {
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mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_attempts = 99 WHERE email_id = $email_id");
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$email_to_logging = escapeSql($email_recipient);
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$email_subject_logging = escapeSql($rowq['email_subject']);
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logApp("Cron-Mail-Queue", "Error", "Failed to send email: $email_id to $email_to_logging due to invalid recipient address. Email subject was: $email_subject_logging");
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appNotify("Mail", "Failed to send email #$email_id to $email_to_logging due to invalid recipient address: Email subject was: $email_subject_logging");
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continue;
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}
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// More intelligent recipient MX check (if not disabled with --no-mx-validation)
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$domain = escapeSql(substr($email_recipient, strpos($email_recipient, '@') + 1));
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if (!in_array('--no-mx-validation', $argv) && !checkdnsrr($domain, 'MX')) {
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mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_attempts = 99 WHERE email_id = $email_id");
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$email_to_logging = escapeSql($email_recipient);
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$email_subject_logging = escapeSql($rowq['email_subject']);
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logApp("Cron-Mail-Queue", "Error", "Failed to send email: $email_id to $email_to_logging due to invalid recipient domain (no MX). Email subject was: $email_subject_logging");
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appNotify("Mail", "Failed to send email #$email_id to $email_to_logging due to invalid recipient domain (no MX): Email subject was: $email_subject_logging");
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continue;
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}
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try {
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sendQueueEmail(
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($config_smtp_provider ?: 'standard_smtp'),
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$config_smtp_host,
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(int)$config_smtp_port,
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(string)$config_smtp_encryption,
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(string)$config_smtp_username,
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(string)$config_smtp_password,
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(string)$email_from,
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(string)$email_from_name,
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(string)$email_recipient,
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(string)$email_recipient_name,
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(string)$email_subject,
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(string)$email_content,
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(string)$email_ics_str,
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(string)$email_attachments,
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(string)$config_mail_oauth_client_id,
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(string)$config_mail_oauth_client_secret,
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(string)$config_mail_oauth_tenant_id,
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(string)$config_mail_oauth_refresh_token,
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(string)$config_mail_oauth_access_token,
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(string)$config_mail_oauth_access_token_expires_at
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);
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// Scrub the body on delivery - it can carry share decryption keys and temporary passwords
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|
mysqli_query($mysqli, "UPDATE email_queue SET email_status = 3, email_sent_at = NOW(), email_attempts = 1, email_content = '', email_cal_str = '', email_attachments = '' WHERE email_id = $email_id");
|
|
|
|
} catch (Exception $e) {
|
|
mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_failed_at = NOW(), email_attempts = 1 WHERE email_id = $email_id");
|
|
|
|
$email_recipient_logging = escapeSql($rowq['email_recipient']);
|
|
$email_subject_logging = escapeSql($rowq['email_subject']);
|
|
$err = substr("Mailer Error: " . $e->getMessage(), 0, 100) . "...";
|
|
|
|
appNotify("Cron-Mail-Queue", "Failed to send email #$email_id to $email_recipient_logging");
|
|
logApp("Cron-Mail-Queue", "Error", "Failed to send email: $email_id to $email_recipient_logging regarding $email_subject_logging. $err");
|
|
}
|
|
}
|
|
}
|
|
|
|
/** =======================================================================
|
|
* RETRIES: status = 2 (Failed), attempts < 4, wait 30 min
|
|
* NOTE: Backoff is `email_failed_at <= NOW() - INTERVAL 30 MINUTE`
|
|
* =======================================================================
|
|
*/
|
|
$sql_failed_queue = mysqli_query(
|
|
$mysqli,
|
|
"SELECT email_attachments, email_attempts, email_cal_str, email_content, email_from,
|
|
email_from_name, email_id, email_recipient, email_recipient_name, email_subject FROM email_queue
|
|
WHERE email_status = 2
|
|
AND email_attempts < 4
|
|
AND email_failed_at <= NOW() - INTERVAL 30 MINUTE"
|
|
);
|
|
|
|
if (mysqli_num_rows($sql_failed_queue) > 0) {
|
|
while ($rowf = mysqli_fetch_assoc($sql_failed_queue)) {
|
|
$email_id = (int)$rowf['email_id'];
|
|
$email_from = $rowf['email_from'];
|
|
$email_from_name = $rowf['email_from_name'];
|
|
$email_recipient = $rowf['email_recipient'];
|
|
$email_recipient_name = $rowf['email_recipient_name'];
|
|
$email_subject = $rowf['email_subject'];
|
|
$email_content = $rowf['email_content'];
|
|
$email_ics_str = $rowf['email_cal_str'];
|
|
$email_attachments = $rowf['email_attachments'];
|
|
$email_attempts = (int)$rowf['email_attempts'] + 1;
|
|
|
|
// Claim the row - same lock as the send path, from the failed state this time.
|
|
mysqli_query($mysqli, "UPDATE email_queue SET email_status = 1 WHERE email_id = $email_id AND email_status = 2");
|
|
if (mysqli_affected_rows($mysqli) !== 1) {
|
|
continue;
|
|
}
|
|
|
|
if (!filter_var($email_recipient, FILTER_VALIDATE_EMAIL)) {
|
|
mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_attempts = $email_attempts WHERE email_id = $email_id");
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
sendQueueEmail(
|
|
($config_smtp_provider ?: 'standard_smtp'),
|
|
$config_smtp_host,
|
|
(int)$config_smtp_port,
|
|
(string)$config_smtp_encryption,
|
|
(string)$config_smtp_username,
|
|
(string)$config_smtp_password,
|
|
(string)$email_from,
|
|
(string)$email_from_name,
|
|
(string)$email_recipient,
|
|
(string)$email_recipient_name,
|
|
(string)$email_subject,
|
|
(string)$email_content,
|
|
(string)$email_ics_str,
|
|
(string)$email_attachments,
|
|
(string)$config_mail_oauth_client_id,
|
|
(string)$config_mail_oauth_client_secret,
|
|
(string)$config_mail_oauth_tenant_id,
|
|
(string)$config_mail_oauth_refresh_token,
|
|
(string)$config_mail_oauth_access_token,
|
|
(string)$config_mail_oauth_access_token_expires_at
|
|
);
|
|
|
|
// Scrub the body on delivery - it can carry share decryption keys and temporary passwords
|
|
mysqli_query($mysqli, "UPDATE email_queue SET email_status = 3, email_sent_at = NOW(), email_attempts = $email_attempts, email_content = '', email_cal_str = '', email_attachments = '' WHERE email_id = $email_id");
|
|
|
|
} catch (Exception $e) {
|
|
mysqli_query($mysqli, "UPDATE email_queue SET email_status = 2, email_failed_at = NOW(), email_attempts = $email_attempts WHERE email_id = $email_id");
|
|
|
|
$email_recipient_logging = escapeSql($rowf['email_recipient']);
|
|
$email_subject_logging = escapeSql($rowf['email_subject']);
|
|
$err = substr("Mailer Error: " . $e->getMessage(), 0, 100) . "...";
|
|
|
|
logApp("Cron-Mail-Queue", "Error", "Failed to re-send email #$email_id to $email_recipient_logging regarding $email_subject_logging. $err");
|
|
}
|
|
}
|
|
}
|