init

auth/logger.php

@@ -0,0 +1,30 @@
+<?php
+
+function auth_log_event(array $entry): void
+{
+    $config = require __DIR__ . "/config.php";
+    $dir = $config["logging"]["dir"];
+    $file = $config["logging"]["file"];
+
+    if (!is_dir($dir)) {
+        @mkdir($dir, 0755, true);
+    }
+
+    $entry["ts"] = $entry["ts"] ?? gmdate("c");
+    $line = json_encode($entry, JSON_UNESCAPED_UNICODE);
+    if ($line === false) {
+        return;
+    }
+
+    $fh = @fopen($file, "ab");
+    if ($fh === false) {
+        return;
+    }
+
+    if (flock($fh, LOCK_EX)) {
+        fwrite($fh, $line . PHP_EOL);
+        flock($fh, LOCK_UN);
+    }
+
+    fclose($fh);
+}