feat: implement global autoresponder plugin

2026-06-02 19:19:00 +02:00
commit 6f989af278
62 changed files with 2018 additions and 0 deletions
@@ -0,0 +1,43 @@
+<?php
+declare(strict_types=1);
+
+final class MailSender
+{
+    public static function buildMessage(string $from, string $to, string $subject, string $body): string
+    {
+        foreach ([$from, $to, $subject] as $value) {
+            if (str_contains($value, "\r") || str_contains($value, "\n")) {
+                throw new InvalidArgumentException('Invalid subject or address header');
+            }
+        }
+        $encodedSubject = '=?UTF-8?B?' . base64_encode($subject) . '?=';
+        $headers = [
+            'From: ' . $from,
+            'To: ' . $to,
+            'Subject: ' . $encodedSubject,
+            'Auto-Submitted: auto-replied',
+            'Content-Type: text/plain; charset=UTF-8',
+            'Content-Transfer-Encoding: 8bit',
+        ];
+        return implode("\n", $headers) . "\n\n" . str_replace(["\r\n", "\r"], "\n", $body) . "\n";
+    }
+
+    public function send(string $sendmail, string $from, string $to, string $subject, string $body): bool
+    {
+        $message = self::buildMessage($from, $to, $subject, $body);
+        if (!is_file($sendmail) || !is_executable($sendmail)) {
+            return false;
+        }
+        $process = proc_open([$sendmail, '-t', '-i'], [['pipe', 'r'], ['pipe', 'w'], ['pipe', 'w']], $pipes);
+        if (!is_resource($process)) {
+            return false;
+        }
+        fwrite($pipes[0], $message);
+        fclose($pipes[0]);
+        stream_get_contents($pipes[1]);
+        stream_get_contents($pipes[2]);
+        fclose($pipes[1]);
+        fclose($pipes[2]);
+        return proc_close($process) === 0;
+    }
+}