Harden security, modularize API bootstrap, and fix scale SSE auth.

Block web access to sensitive paths, require API_TOKEN for mutations, encrypt GitHub issue credentials in .env, auto-provision tokens for same-origin clients, and pass api_token in scale relay URLs since EventSource cannot send headers. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-06-03 18:04:19 +00:00
parent 7104483dac
commit d33b0ca2fe
34 changed files with 1619 additions and 277 deletions
@@ -0,0 +1,69 @@
+<?php
+/**
+ * EverShelf — GitHub issue reporting token (encrypted at rest in .env).
+ *
+ * Configure ONE of:
+ *   GH_ISSUE_TOKEN=ghp_...                    (plain, .env is gitignored)
+ *   GH_ISSUE_TOKEN_ENC=... + GH_ISSUE_TOKEN_KEY=...  (AES-256-GCM, preferred)
+ *
+ * Generate encrypted value: php scripts/encrypt-gh-token.php 'ghp_xxx' 'your-secret-key'
+ */
+
+require_once __DIR__ . '/env.php';
+
+function evershelfDecryptGhToken(string $encB64, string $key): string {
+    $raw = base64_decode($encB64, true);
+    if ($raw === false || strlen($raw) < 28) {
+        return '';
+    }
+    $iv     = substr($raw, 0, 12);
+    $tag    = substr($raw, 12, 16);
+    $cipher = substr($raw, 28);
+    $plain  = openssl_decrypt(
+        $cipher,
+        'aes-256-gcm',
+        hash('sha256', $key, true),
+        OPENSSL_RAW_DATA,
+        $iv,
+        $tag
+    );
+    return ($plain !== false) ? $plain : '';
+}
+
+function evershelfEncryptGhToken(string $plain, string $key): string {
+    $iv = random_bytes(12);
+    $tag = '';
+    $cipher = openssl_encrypt(
+        $plain,
+        'aes-256-gcm',
+        hash('sha256', $key, true),
+        OPENSSL_RAW_DATA,
+        $iv,
+        $tag
+    );
+    return base64_encode($iv . $tag . $cipher);
+}
+
+/** Decode GitHub Issues token at runtime — never stored in source code. */
+function _ghToken(): string {
+    static $token = null;
+    if ($token !== null) {
+        return $token;
+    }
+
+    $plain = env('GH_ISSUE_TOKEN');
+    if ($plain !== '') {
+        $token = $plain;
+        return $token;
+    }
+
+    $enc = env('GH_ISSUE_TOKEN_ENC');
+    $key = env('GH_ISSUE_TOKEN_KEY');
+    if ($enc !== '' && $key !== '') {
+        $token = evershelfDecryptGhToken($enc, $key);
+        return $token;
+    }
+
+    $token = '';
+    return $token;
+}