feat(server): add password generator

htdocs/luci-static/resources/homeproxy.js

@@ -169,11 +169,26 @@ return baseclass.extend({
 		return L.resolveDefault(callGetSingBoxFeatures(), {});
 	},
 
-	generateUUIDv4: function() {
-		/* Thanks to https://stackoverflow.com/a/2117523 */
-		return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, (c) =>
-			(c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16)
-		);
+	generateRand: function(type, length) {
+		var byteArr;
+		if (['base64', 'hex'].includes(type))
+			byteArr = crypto.getRandomValues(new Uint8Array(length));
+		switch (type) {
+			case 'base64':
+				/* Thanks to https://stackoverflow.com/questions/9267899 */
+				return btoa(String.fromCharCode.apply(null, byteArr));
+			case 'hex':
+				return Array.from(byteArr, (byte) =>
+					(byte & 255).toString(16).padStart(2, '0')
+				).join('');
+			case 'uuid':
+				/* Thanks to https://stackoverflow.com/a/2117523 */
+				return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, (c) =>
+					(c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16)
+				);
+			default:
+				return null;
+		};
 	},
 
 	loadDefaultLabel: function(uciconfig, ucisection) {

htdocs/luci-static/resources/view/homeproxy/server.js

@@ -9,6 +9,7 @@
 'require poll';
 'require rpc';
 'require uci';
+'require ui';
 'require view';
 
 'require homeproxy as hp';
@@ -41,6 +42,46 @@ function renderStatus(isRunning) {
 	return renderHTML;
 }
 
+function handleGenKey(option) {
+	var section_id = this.section.section;
+	var type = this.section.getOption('type').formvalue(section_id);
+	var widget = this.map.findElement('id', 'widget.cbid.homeproxy.%s.%s'.format(section_id, option));
+	var password, required_method;
+
+	if (option === 'uuid')
+		required_method = 'uuid';
+	else if (type === 'shadowsocks')
+		required_method = this.section.getOption('shadowsocks_encrypt_method')?.formvalue(section_id);
+
+	switch (required_method) {
+		case 'aes-128-gcm':
+		case '2022-blake3-aes-128-gcm':
+			password = hp.generateRand('base64', 16);
+			break;
+		case 'aes-192-gcm':
+			password = hp.generateRand('base64', 24);
+			break;
+		case 'aes-256-gcm':
+		case 'chacha20-ietf-poly1305':
+		case 'xchacha20-ietf-poly1305':
+		case '2022-blake3-aes-256-gcm':
+		case '2022-blake3-chacha20-poly1305':
+			password = hp.generateRand('base64', 32);
+			break;
+		case 'none':
+			password = '';
+			break;
+		case 'uuid':
+			password = hp.generateRand('uuid');
+			break;
+		default:
+			password = hp.generateRand('hex', 16);
+			break;
+	}
+
+	return widget.value = password;
+}
+
 return view.extend({
 	load: function() {
 		return Promise.all([
@@ -139,6 +180,17 @@ return view.extend({
 		o.depends('type', 'shadowsocks');
 		o.depends('type', 'trojan');
 		o.depends('type', 'tuic');
+		o.renderWidget = function() {
+			var node = form.Value.prototype.renderWidget.apply(this, arguments);
+
+			(node.querySelector('.control-group') || node).appendChild(E('button', {
+				'class': 'cbi-button cbi-button-apply',
+				'title': _('Generate'),
+				'click': ui.createHandlerFn(this, handleGenKey, this.option)
+			}, [ _('Generate') ]));
+
+			return node;
+		}
 		o.validate = function(section_id, value) {
 			if (section_id) {
 				var type = this.map.lookupOption('type', section_id)[0].formvalue(section_id);
@@ -265,6 +317,17 @@ return view.extend({
 		o.depends('type', 'tuic');
 		o.depends('type', 'vless');
 		o.depends('type', 'vmess');
+		o.renderWidget = function() {
+			var node = form.Value.prototype.renderWidget.apply(this, arguments);
+
+			(node.querySelector('.control-group') || node).appendChild(E('button', {
+				'class': 'cbi-button cbi-button-apply',
+				'title': _('Generate'),
+				'click': ui.createHandlerFn(this, handleGenKey, this.option)
+			}, [ _('Generate') ]));
+
+			return node;
+		}
 		o.validate = hp.validateUUID;
 		o.modalonly = true;