Initial dev export (exclude uploads/runtime)
This commit is contained in:
AudioCore Bot
226
core/services/Mailer.php
Normal file
226
core/services/Mailer.php
Normal file
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<?php
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declare(strict_types=1);
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namespace Core\Services;
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class Mailer
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{
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public static function send(string $to, string $subject, string $html, array $settings): array
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{
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$host = (string)($settings['smtp_host'] ?? '');
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$port = (int)($settings['smtp_port'] ?? 587);
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$user = (string)($settings['smtp_user'] ?? '');
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$pass = (string)($settings['smtp_pass'] ?? '');
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$encryption = strtolower((string)($settings['smtp_encryption'] ?? 'tls'));
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$fromEmail = (string)($settings['smtp_from_email'] ?? '');
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$fromName = (string)($settings['smtp_from_name'] ?? '');
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if ($fromEmail === '') {
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$fromEmail = $user !== '' ? $user : 'no-reply@localhost';
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}
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$fromHeader = $fromName !== '' ? "{$fromName} <{$fromEmail}>" : $fromEmail;
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if ($host === '') {
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$headers = [
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'MIME-Version: 1.0',
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'Content-type: text/html; charset=utf-8',
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"From: {$fromHeader}",
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];
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$ok = mail($to, $subject, $html, implode("\r\n", $headers));
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return ['ok' => $ok, 'error' => $ok ? '' : 'mail() failed', 'debug' => 'transport=mail()'];
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}
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$remote = $encryption === 'ssl' ? "ssl://{$host}:{$port}" : "{$host}:{$port}";
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$socket = stream_socket_client($remote, $errno, $errstr, 10);
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if (!$socket) {
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return ['ok' => false, 'error' => "SMTP connect failed: {$errstr}", 'debug' => "connect={$remote} errno={$errno} err={$errstr}"];
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}
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$debug = [];
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$read = function () use ($socket): string {
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$data = '';
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while (!feof($socket)) {
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$line = fgets($socket, 515);
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if ($line === false) {
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break;
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}
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$data .= $line;
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if (isset($line[3]) && $line[3] === ' ') {
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break;
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}
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}
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return $data;
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};
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$send = function (string $command) use ($socket, $read): string {
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fwrite($socket, $command . "\r\n");
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return $read();
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};
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$resp = $read();
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$debug[] = 'S: ' . trim($resp);
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if (!self::isOkResponse($resp)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP greeting failed', 'debug' => implode("\n", $debug)];
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}
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$resp = $send("EHLO localhost");
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$debug[] = 'C: EHLO localhost';
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$debug[] = 'S: ' . trim($resp);
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if (!self::isOkResponse($resp)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP EHLO failed', 'debug' => implode("\n", $debug)];
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}
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$authCaps = self::parseAuthCapabilities($resp);
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if ($encryption === 'tls') {
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$resp = $send("STARTTLS");
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$debug[] = 'C: STARTTLS';
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$debug[] = 'S: ' . trim($resp);
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if (substr(trim($resp), 0, 3) !== '220') {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP STARTTLS failed', 'debug' => implode("\n", $debug)];
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}
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if (!stream_socket_enable_crypto($socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP TLS negotiation failed', 'debug' => implode("\n", $debug)];
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}
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$resp = $send("EHLO localhost");
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$debug[] = 'C: EHLO localhost';
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$debug[] = 'S: ' . trim($resp);
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if (!self::isOkResponse($resp)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP EHLO after TLS failed', 'debug' => implode("\n", $debug)];
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}
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$authCaps = self::parseAuthCapabilities($resp);
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}
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if ($user !== '' && $pass !== '') {
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$authOk = false;
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$authErrors = [];
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// Prefer advertised AUTH mechanisms when available.
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if (in_array('PLAIN', $authCaps, true)) {
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$authResp = $send("AUTH PLAIN " . base64_encode("\0{$user}\0{$pass}"));
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$debug[] = 'C: AUTH PLAIN [credentials]';
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$debug[] = 'S: ' . trim($authResp);
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if (substr(trim($authResp), 0, 3) === '235') {
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$authOk = true;
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} else {
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$authErrors[] = 'PLAIN rejected';
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}
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}
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if (!$authOk && (in_array('LOGIN', $authCaps, true) || !$authCaps)) {
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$resp = $send("AUTH LOGIN");
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$debug[] = 'C: AUTH LOGIN';
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$debug[] = 'S: ' . trim($resp);
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if (substr(trim($resp), 0, 3) === '334') {
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$resp = $send(base64_encode($user));
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$debug[] = 'C: [username]';
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$debug[] = 'S: ' . trim($resp);
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if (substr(trim($resp), 0, 3) === '334') {
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$resp = $send(base64_encode($pass));
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$debug[] = 'C: [password]';
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$debug[] = 'S: ' . trim($resp);
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if (substr(trim($resp), 0, 3) === '235') {
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$authOk = true;
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} else {
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$authErrors[] = 'LOGIN password rejected';
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}
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} else {
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$authErrors[] = 'LOGIN username rejected';
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}
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} else {
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$authErrors[] = 'LOGIN command rejected';
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}
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}
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if (!$authOk) {
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fclose($socket);
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$err = $authErrors ? implode(', ', $authErrors) : 'No supported AUTH method';
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return ['ok' => false, 'error' => 'SMTP authentication failed: ' . $err, 'debug' => implode("\n", $debug)];
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}
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}
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$resp = $send("MAIL FROM:<{$fromEmail}>");
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$debug[] = "C: MAIL FROM:<{$fromEmail}>";
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$debug[] = 'S: ' . trim($resp);
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if (!self::isOkResponse($resp)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP MAIL FROM failed', 'debug' => implode("\n", $debug)];
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}
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$resp = $send("RCPT TO:<{$to}>");
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$debug[] = "C: RCPT TO:<{$to}>";
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$debug[] = 'S: ' . trim($resp);
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if (!self::isOkResponse($resp)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP RCPT TO failed', 'debug' => implode("\n", $debug)];
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}
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$resp = $send("DATA");
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$debug[] = 'C: DATA';
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$debug[] = 'S: ' . trim($resp);
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if (substr(trim($resp), 0, 3) !== '354') {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP DATA failed', 'debug' => implode("\n", $debug)];
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}
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$headers = [
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"From: {$fromHeader}",
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"To: {$to}",
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"Subject: {$subject}",
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"MIME-Version: 1.0",
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"Content-Type: text/html; charset=utf-8",
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];
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$message = implode("\r\n", $headers) . "\r\n\r\n" . $html . "\r\n.";
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fwrite($socket, $message . "\r\n");
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$resp = $read();
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$debug[] = 'C: [message body]';
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$debug[] = 'S: ' . trim($resp);
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if (!self::isOkResponse($resp)) {
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fclose($socket);
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return ['ok' => false, 'error' => 'SMTP message rejected', 'debug' => implode("\n", $debug)];
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}
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$resp = $send("QUIT");
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$debug[] = 'C: QUIT';
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$debug[] = 'S: ' . trim($resp);
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fclose($socket);
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return ['ok' => true, 'error' => '', 'debug' => implode("\n", $debug)];
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}
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private static function isOkResponse(string $response): bool
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{
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$code = substr(trim($response), 0, 3);
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if ($code === '') {
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return false;
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}
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return $code[0] === '2' || $code[0] === '3';
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}
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/**
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* @return string[]
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*/
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private static function parseAuthCapabilities(string $ehloResponse): array
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{
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$caps = [];
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foreach (preg_split('/\r?\n/', $ehloResponse) as $line) {
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$line = trim($line);
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if ($line === '') {
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continue;
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}
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$line = preg_replace('/^\d{3}[ -]/', '', $line) ?? $line;
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if (stripos($line, 'AUTH ') === 0) {
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$parts = preg_split('/\s+/', substr($line, 5)) ?: [];
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foreach ($parts as $p) {
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$p = strtoupper(trim($p));
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if ($p !== '') {
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$caps[] = $p;
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}
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}
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}
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}
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return array_values(array_unique($caps));
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}
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}
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