ssb: Only admins are offered the option to enable peer exchange.

apps/ssb/app.js

@@ -112,6 +112,9 @@ tfrpc.register(async function globalSettingsGet(key) {
 tfrpc.register(async function globalSettingsSet(key, value) {
 	return core.globalSettingsSet(key, value);
 });
+tfrpc.register(function isAdministrator() {
+	return core.user?.credentials?.permissions?.administration;
+});
 
 core.register('onBroadcastsChanged', async function () {
 	await tfrpc.rpc.set('broadcasts', await ssb.getBroadcasts());

apps/ssb/tf-tab-news.js

@@ -49,9 +49,7 @@ class TfTabNewsElement extends LitElement {
 		tfrpc.rpc.localStorageGet('drafts').then(function (d) {
 			self.drafts = JSON.parse(d || '{}');
 		});
-		tfrpc.rpc.globalSettingsGet('peer_exchange').then(function (value) {
-			self.peer_exchange = value;
-		});
+		this.check_peer_exchange();
 	}
 
 	connectedCallback() {
@@ -64,6 +62,14 @@ class TfTabNewsElement extends LitElement {
 		document.body.removeEventListener('keypress', this.on_keypress.bind(this));
 	}
 
+	async check_peer_exchange() {
+		if (await tfrpc.rpc.isAdministrator()) {
+			this.peer_exchange = await tfrpc.rpc.globalSettingsGet('peer_exchange');
+		} else {
+			this.peer_exchange = undefined;
+		}
+	}
+
 	load_latest() {
 		let news = this.shadowRoot?.getElementById('news');
 		if (news) {
@@ -174,7 +180,7 @@ class TfTabNewsElement extends LitElement {
 
 	async enable_peer_exchange() {
 		await tfrpc.rpc.globalSettingsSet('peer_exchange', true);
-		this.peer_exchange = await tfrpc.rpc.globalSettingsGet('peer_exchange');
+		await this.check_peer_exchange();
 	}
 
 	render_sidebar() {
@@ -266,7 +272,7 @@ class TfTabNewsElement extends LitElement {
 							</button>
 							<button
 								class=${'w3-bar-item w3-button' +
-								(this.peer_exchange ? ' w3-hide' : '')}
+								(this.peer_exchange !== false ? ' w3-hide' : '')}
 								@click=${this.enable_peer_exchange}
 							>
 								Enable peer exchange