[pitboss] phase 05: M5 — JS/TS, Go, Java, PHP harness emitters

tests/dynamic_fixtures/php/fileio_negative.php

@@ -0,0 +1,20 @@
+<?php
+// File I/O — negative fixture.
+// Safe: realpath + prefix validation prevents directory traversal.
+// Entry: readFile($userPath)  Cap: FILE_IO
+// Expected verdict: NotConfirmed
+
+function readFile($userPath) {
+    $baseDir = '/var/data';
+    $filePath = realpath($baseDir . '/' . $userPath);
+    if ($filePath === false || strpos($filePath, $baseDir . DIRECTORY_SEPARATOR) !== 0) {
+        echo "Access denied\n";
+        return;
+    }
+    $content = @file_get_contents($filePath);
+    if ($content !== false) {
+        echo substr($content, 0, 100);
+    } else {
+        echo "File not found\n";
+    }
+}