Adding support for protocol handler

CHANGES.md

@@ -16,6 +16,7 @@
 - #3769: Various OMEMO fixes
 - #3791: Fetching pubsub node configuration fails
 - #3792: Node reconfiguration attempt uses incorrect field names
+- Adding support for protocol handler
 - Fix documentation formatting in security.rst
 - Add approval banner in chats with requesting contacts or unsaved contacts
 - Add mongolian as a language option

manifest.json

@@ -26,5 +26,11 @@
   "background_color": "#397491",
   "display": "standalone",
   "scope": "/",
-  "theme_color": "#397491"
+  "theme_color": "#397491",
+  "protocol_handlers": [
+    {
+      "protocol": "xmpp",
+      "url": "/dev?jid=%s"
+    }
+  ]
 }

src/headless/plugins/chat/utils.js

@@ -22,7 +22,16 @@ export function routeToChat (event) {
         return;
     }
     event?.preventDefault();
-    const jid = location.hash.split('=').pop();
+    let jid = location.hash.split('=').pop();
+    // decodeURIComponent is needed in case the JID contains special characters
+    // that were URL-encoded, e.g. `user%40domain` instead of `user@domain`.
+    jid = decodeURIComponent(jid);
+
+    // Remove xmpp: prefix if present
+    if (jid.startsWith('xmpp:')) {
+        jid = jid.slice(5);
+    }
+
     if (!u.isValidJID(jid)) {
         return log.warn(`Invalid JID "${jid}" provided in URL fragment`);
     }

src/plugins/chatview/index.js

@@ -65,6 +65,14 @@ converse.plugins.add('converse-chatview', {
         Object.assign(_converse, exports); // DEPRECATED
         Object.assign(_converse.exports, exports);
 
+        if ('registerProtocolHandler' in navigator) {
+        try {
+            const handlerUrl = `${window.location.origin}${window.location.pathname}#converse/chat?jid=%s`;
+            navigator.registerProtocolHandler('xmpp', handlerUrl);
+        } catch (error) {
+            console.warn('Failed to register protocol handler:', error);
+        }
+    }
         api.listen.on('connected', () => api.disco.own.features.add(Strophe.NS.SPOILER));
         api.listen.on('chatBoxClosed', (model) => clearHistory(model.get('jid')));
     }