fix: answer 404 for WordPress content directories

public/.htaccess

@@ -13,6 +13,17 @@
     RewriteCond %{HTTP:x-xsrf-token} .
     RewriteRule .* - [E=HTTP_X_XSRF_TOKEN:%{HTTP:X-XSRF-Token}]
 
+    # WordPress Content Directories Are Not Pages...
+    #
+    # A directory, or the empty index.php WordPress ships in some of them
+    # ("Silence is golden"), answered a blank 200 or a 403: either way it told
+    # a visitor the directory exists. The front controller answers instead,
+    # with the site's own 404. Files in them (CSS, JS, images) are served as
+    # before.
+    RewriteCond %{REQUEST_FILENAME} -d [OR]
+    RewriteCond %{REQUEST_FILENAME} /index\.php$
+    RewriteRule ^(cms/wp-content|content)(/|$) index.php [L]
+
     # Redirect Trailing Slashes If Not A Folder...
     #
     # Only GET and HEAD: a redirected POST or OPTIONS is lost. The REST API is

tests/install/checks.php

@@ -691,3 +691,64 @@ function checkViewPathPrecedence(): void
             : "the archive answered 200 with {$bytes} bytes — the theme root's index.php stub rendered";
     });
 }
+
+// ─────────────────────────────────────────────────────────────────────────────
+// 1.9 — WordPress content directories answer 404 (Pollora/framework#294)
+// ─────────────────────────────────────────────────────────────────────────────
+
+/**
+ * A directory under the content paths is not a page.
+ *
+ * WordPress ships an empty index.php ("Silence is golden") in wp-content,
+ * wp-content/plugins and wp-content/themes. Apache served it directly: a blank
+ * 200, which told anyone probing that the directory exists. A directory without
+ * one answered 403, which said the same. The skeleton's .htaccess now sends
+ * both to the front controller, so the site's own 404 answers — and a file in
+ * those directories must still be served, or every plugin's CSS would break.
+ */
+function checkContentDirectories(): void
+{
+    section('1.9 — Content directories answer 404');
+
+    $directories = [
+        '/cms/wp-content/',
+        '/cms/wp-content/index.php',
+        '/cms/wp-content/plugins/',
+        '/cms/wp-content/themes/',
+        '/content/',
+        '/content/plugins/',
+        '/content/uploads/',
+    ];
+
+    foreach ($directories as $path) {
+        test("{$path} answers the site's 404", function () use ($path) {
+            $response = http(siteUrl($path));
+
+            if ($response['status'] === 200 && trim($response['body']) === '') {
+                return "a blank 200 — WordPress's empty index.php was served directly";
+            }
+
+            return rendersHtml($response, 404);
+        });
+    }
+
+    test('A file in a content directory is still served', function () {
+        $response = http(siteUrl('/cms/wp-includes/css/dashicons.min.css'));
+
+        if ($response['status'] !== 200) {
+            return "a core stylesheet answered {$response['status']}";
+        }
+
+        // The rule is scoped to the content directories; a stylesheet in one of
+        // them must not be caught either.
+        $plugin = wpEval('$p = glob(WP_PLUGIN_DIR . "/*/*.css") ?: glob(WP_PLUGIN_DIR . "/*/*/*.css") ?: glob(WP_PLUGIN_DIR . "/*/*/*/*.css"); echo $p ? plugins_url(basename($p[0]), $p[0]) : "";');
+
+        if ($plugin === '') {
+            return true;
+        }
+
+        $status = http($plugin)['status'];
+
+        return $status === 200 ? true : "a plugin stylesheet ({$plugin}) answered {$status}";
+    });
+}

tests/install/run.php

@@ -19,7 +19,7 @@
  *   checks    run the checks against the site as it stands, without
  *             reinstalling; seeds install-test* fixtures, drops nothing.
  *             Takes an optional group — rendering, rewrites, theme,
- *             updates or views — to run just that one
+ *             updates, views or directories — to run just that one
  *
  * Every scenario but `checks` drops the database. POLLORA_INSTALL_TESTS=1 is
  * required to confirm the site is disposable.
@@ -67,6 +67,7 @@
             checkThemeResolution();
             checkThemeUpdateGuard();
             checkViewPathPrecedence();
+            checkContentDirectories();
             break;
 
         case 'no-theme':
@@ -112,6 +113,7 @@
             checkThemeResolution();
             checkThemeUpdateGuard();
             checkViewPathPrecedence();
+            checkContentDirectories();
             break;
 
         case 'checks':
@@ -124,8 +126,8 @@
             // per fix, and the full pass is far too slow for that.
             $only = $argv[2] ?? null;
 
-            if ($only !== null && ! in_array($only, ['rendering', 'rewrites', 'theme', 'updates', 'views'], true)) {
-                fwrite(STDERR, "\nUnknown group '{$only}': expected rendering, rewrites, theme, updates or views\n\n");
+            if ($only !== null && ! in_array($only, ['rendering', 'rewrites', 'theme', 'updates', 'views', 'directories'], true)) {
+                fwrite(STDERR, "\nUnknown group '{$only}': expected rendering, rewrites, theme, updates, views or directories\n\n");
                 exit(2);
             }
 
@@ -148,6 +150,10 @@
             if ($only === null || $only === 'views') {
                 checkViewPathPrecedence();
             }
+
+            if ($only === null || $only === 'directories') {
+                checkContentDirectories();
+            }
             break;
     }
 } catch (\Throwable $e) {