Restructure inclusion of file/ftp protocol-specific content scripts.

manifest.js

@@ -46,8 +46,9 @@ if (MANIFEST_VER.includes(3)) {
       /^(?:<all_urls>|webRequestBlocking)$/
       .test(p)
     );
+  const excludedScriptsRx = /\bcontent\/(?:embeddingDocument|dirindex)\.js$/;
   for (const cs of json.content_scripts) {
-    cs.js = cs.js.filter(js => !js.includes("content/embeddingDocument.js"))
+    cs.js = cs.js.filter(path => !excludedScriptsRx.test(path));
   }
   delete json.browser_action;
   delete json.commands._execute_browser_action

src/content/dirindex.js

@@ -18,7 +18,7 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
-if (UA.isMozilla) (() => {
+if (FILE_OR_FTP && UA.isMozilla) (() => {
   // see https://searchfox.org/mozilla-central/rev/76c1ff5f0de23366fe952ab228610ee695a56e68/netwerk/streamconv/converters/nsIndexedToHTML.cpp#334
   'use strict';
   var gTable, gOrderBy, gTBody, gRows, gUI_showHidden;

src/content/staticNS.js

@@ -18,8 +18,9 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
+'use strict';
+const FILE_OR_FTP = /^(?:file|ftp):$/.test(location.protocol);
 {
-  'use strict';
   let listenersMap = new Map();
   let backlog = new Set();
 
@@ -155,7 +156,7 @@
         if (!(UA.isMozilla || perms.capabilities.includes("script")) &&
           /^file:\/\/\/(?:[^#?]+\/)?$/.test(document.URL)) {
           // Allow Chromium browser UI scripts for directory navigation
-          // (for Firefox we rely on emulation in content/ftp.js).
+          // (for Firefox we rely on emulation in content/dirindex.js).
           perms.capabilities.push("script");
         }
         this.capabilities = new Set(perms.capabilities);
@@ -177,6 +178,10 @@
   globalThis.ns_setupCallBack = ns.domPolicy
     ? () => {}
     : ({domPolicy}) => {
-
+      ns.domPolicy = domPolicy;
+      if (ns.setup) {
+        if (ns.syncSetup) ns.syncSetup(domPolicy);
+        else ns.setup(domPolicy);
+      }
     };
 }

src/content/syncFetchPolicy.js

@@ -22,7 +22,8 @@
 
 "use strict";
 
-(window.ns || (window.ns = {})).syncFetchPolicy = function() {
+if (FILE_OR_FTP) {
+  (globalThis.ns ||= {}).syncFetchPolicy = function() {
 
     ns.pendingSyncFetchPolicy = false;
     ns.syncFetchPolicy = () => {};
@@ -219,8 +220,9 @@
     }
 
     ns.fetchLikeNoTomorrow(url, syncSetup);
-};
+  };
 
-if (ns.pendingSyncFetchPolicy) {
+  if (ns.pendingSyncFetchPolicy) {
     ns.syncFetchPolicy();
+  }
 }

src/manifest.json

@@ -116,7 +116,10 @@
         "/nscl/content/WebGLHook.js",
         "/nscl/content/promptHook.js",
         "content/embeddingDocument.js",
-        "content/content.js"
+        "content/content.js",
+        "content/dirindex.js",
+        "/nscl/content/DocumentFreezer.js",
+        "content/syncFetchPolicy.js"
       ]
     },
     {
@@ -134,18 +137,6 @@
         "/nscl/main/WebGLHook.main.js",
         "/nscl/main/prefetchCSSResources.main.js"
       ]
-    },
-    {
-      "run_at": "document_start",
-      "matches": ["file://*/*", "ftp://*/*"],
-      "match_about_blank": true,
-      "match_origin_as_fallback": true,
-      "all_frames": true,
-      "js": [
-        "content/ftp.js",
-        "/nscl/content/DocumentFreezer.js",
-        "content/syncFetchPolicy.js"
-      ]
     }
   ],