Stopped working in Firefox for Android 142

[koalatux]

IPvFoo does not work anymore since Firefox for Android Version 142.

I first observed it in Firefox, then I used Fennec for testing, because I could easily downgrade it using F-Droid.

Screenshot of Fennec 141.0.2 with IPvFoo:

Screenshot after upgrading to Fennec 142.0.0 with IPvFoo menu item missing:

[pmarks-net]

Thanks for reporting. I got a new phone a couple months ago, and hadn't installed IPvFoo since then.

I see the same problem here, so I'll investigate this week.

[pmarks-net]

This is working for me:

$ cp manifest/firefox-manifest.json manifest.json 
$ sed -i 's/page_action/action/g' manifest.json
$ web-ext run --target=firefox-android --android-device=XXX

So the problem is that Firefox for Android dropped support for "page_action" in favor of "action".

The difference is that "page_action" appears in the address bar, while "action" appears as a toolbar button. Chrome killed "page_action" years ago, but I prefer to keep using it on desktop Firefox for as long as it works. So I'll have to figure out how to use "action" on Android but "page_action" on desktop.

[pmarks-net]

So I'll have to figure out how to use "action" on Android but "page_action" on desktop.

My solution was to implement both action and page_action, and let Firefox choose which to use. So on desktop Firefox, the 4/6 icon now appears both in the address bar and the puzzle piece menu. Redundant but harmless, given that IPvFoo was already occupying space in the puzzle piece menu with a greyed-out icon.

[koalatux]

That was fast. Thanks a lot 🙂

[pmarks-net]

Side effect: Firefox <= 141 now shows duplicate icons on Android.

I want to leave the code as-is for now, so we can see if Firefox ever fixes the bug. If the duplicate icons return, then I can just skip pageAction on Android:

diff --git a/src/background.js b/src/background.js
index 7812f5a..559acd4 100644
--- a/src/background.js
+++ b/src/background.js
@@ -148,7 +148,10 @@ function reformatForNAT64(addr, doLookup=true) {
 // when browsers forget to implement pageAction (e.g. Firefox 142 for Android).
 const actions = new Proxy({}, {
   get(target, prop) {
-    const apis = [chrome.action, chrome.pageAction].filter(Boolean);
+    const apis = [chrome.action];
+    if (chrome.pageAction && !IS_MOBILE) {
+      apis.push(chrome.pageAction);
+    }
     return (...args) => {
       for (const api of apis) {
         if (typeof api[prop] === 'function') {

Or I could revert 4d84dbb, but that would leave a range of Firefox versions (142..???) where IPvFoo doesn't work.

[pmarks-net]

https://bugzilla.mozilla.org/show_bug.cgi?id=1984835

[pmarks-net]

Firefox Nightly 144 (2025-09-05) with IPvFoo v2.25 shows duplicate icons:

Rolling back isn't an option, because pageAction will be broken for ~2 months, so I will disable pageAction on Android.

[pmarks-net]

Actually, I can't skip pageAction on Android, because the pageAction is visible even if I don't call show():

[pmarks-net]

Filed https://bugzilla.mozilla.org/show_bug.cgi?id=1987309, because pageAction being visible without show() seems like another bug.

[pmarks-net]

c91f02a

I'm reverting the change and closing this issue, because Firefox 144 has rolled out.

Unfortunately IPvFoo is broken again on Firefox 145, but that bug seems unrelated: #72