From f2703f7f95743530cdf86dffd680b4ff834d4721 Mon Sep 17 00:00:00 2001
From: ownedbywuigi <ownedbywuigi@gmail.com>
Date: Tue, 31 Mar 2026 20:04:18 +0100
Subject: [PATCH] webRequest support

---
 .../webextensions/ext-webRequest.js           | 65 +++++++++++++++++++
 .../webextensions/schemas/manifest.json       | 20 +++++-
 2 files changed, 82 insertions(+), 3 deletions(-)

diff --git a/toolkit/components/webextensions/ext-webRequest.js b/toolkit/components/webextensions/ext-webRequest.js
index f92330131d..a1f38169ea 100644
--- a/toolkit/components/webextensions/ext-webRequest.js
+++ b/toolkit/components/webextensions/ext-webRequest.js
@@ -96,6 +96,42 @@ function WebRequestEventManager(context, eventName) {
 
 WebRequestEventManager.prototype = Object.create(SingletonEventManager.prototype);
 
+// StreamFilter stub for response data filtering
+// Modern extensions may use filterResponseData(), we provide a basic stub
+function StreamFilterStub(requestId) {
+  this.requestId = requestId;
+  this.status = "unattached";
+  this.onstart = null;
+  this.ondata = null;
+  this.onstop = null;
+  this.onerror = null;
+}
+
+StreamFilterStub.prototype = {
+  write: function(data) {
+    // Stub: no-op - just accept the data without modification
+  },
+  close: function() {
+    this.status = "closed";
+    if (this.onstop) {
+      try {
+        this.onstop();
+      } catch (e) {}
+    }
+  },
+  error: function(error) {
+    this.status = "errored";
+    if (this.onerror) {
+      try {
+        this.onerror(error);
+      } catch (e) {}
+    }
+  },
+  disconnect: function() {
+    this.status = "closed";
+  }
+};
+
 extensions.registerSchemaAPI("webRequest", "addon_parent", context => {
   return {
     webRequest: {
@@ -110,6 +146,35 @@ extensions.registerSchemaAPI("webRequest", "addon_parent", context => {
       handlerBehaviorChanged: function() {
         // TODO: Flush all caches.
       },
+      // Resource type constants for feature detection and filtering
+      ResourceType: Object.freeze({
+        MAIN_FRAME: "main_frame",
+        SUB_FRAME: "sub_frame",
+        STYLESHEET: "stylesheet",
+        SCRIPT: "script",
+        IMAGE: "image",
+        OBJECT: "object",
+        XMLHTTPREQUEST: "xmlhttprequest",
+        XBL: "xbl",
+        XSLT: "xslt",
+        PING: "ping",
+        BEACON: "beacon",
+        XML_DTD: "xml_dtd",
+        FONT: "font",
+        MEDIA: "media",
+        WEBSOCKET: "websocket",
+        CSP_REPORT: "csp_report",
+        IMAGESET: "imageset",
+        WEB_MANIFEST: "web_manifest",
+        OTHER: "other"
+      }),
+      // Stub implementation of filterResponseData for extensions that need it
+      // Returns a StreamFilter-like object that extensions can use to intercept responses
+      filterResponseData: function(requestId) {
+        return new StreamFilterStub(requestId);
+      },
+      // Maximum handler behavior change calls per 10 minutes (per MDN spec)
+      MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES: 20,
     },
   };
 });
diff --git a/toolkit/components/webextensions/schemas/manifest.json b/toolkit/components/webextensions/schemas/manifest.json
index 09e6b56fba..636575dc04 100644
--- a/toolkit/components/webextensions/schemas/manifest.json
+++ b/toolkit/components/webextensions/schemas/manifest.json
@@ -26,7 +26,8 @@
                 "$ref": "FirefoxSpecificProperties",
                 "optional": true
               }
-            }
+            },
+            "additionalProperties": { "$ref": "UnrecognizedProperty" }
           },
 
           "browser_specific_settings": {
@@ -36,8 +37,13 @@
               "gecko": {
                 "$ref": "FirefoxSpecificProperties",
                 "optional": true
+              },
+              "gecko_android": {
+                "$ref": "FirefoxSpecificProperties",
+                "optional": true
               }
-            }
+            },
+            "additionalProperties": { "$ref": "UnrecognizedProperty" }
           },
 
           "name": {
@@ -261,8 +267,16 @@
           "strict_max_version": {
             "type": "string",
             "optional": true
+          },
+
+          "data_collection_permissions": {
+            "type": "object",
+            "optional": true,
+            "onError": "warn",
+            "additionalProperties": { "type": "any" }
           }
-        }
+        },
+        "additionalProperties": { "$ref": "UnrecognizedProperty" }
       },
       {
         "id": "MatchPattern",