https://github.com/RainLoop/rainloop-webmail/pull/2054

plugins/hcaptcha/js/hcaptcha.js

@@ -0,0 +1,88 @@
+(rl => {
+	if (rl) {
+		var
+			nId = null,
+			bStarted = false
+		;
+
+		function ShowHcaptcha()
+		{
+			if (window.hcaptcha && null === nId)
+			{
+				var
+					oEl = null,
+					oLink = document.getElementById('plugin-Login-BottomControlGroup')
+				;
+
+				if (oLink)
+				{
+					oEl = document.createElement('div');
+					oEl.className = 'controls';
+
+					oLink.append(oEl);
+
+					nId = hcaptcha.render(oEl, {
+						'sitekey': rl.pluginSettingsGet('hcaptcha', 'site_key'),
+						'theme': rl.pluginSettingsGet('hcaptcha', 'theme')
+					});
+				}
+			}
+		}
+
+		window.__globalShowHcaptcha = ShowHcaptcha;
+
+		function StartHcaptcha()
+		{
+			if (window.hcaptcha)
+			{
+				ShowHcaptcha();
+			}
+			else
+			{
+				const script = document.createElement('script');
+				script.src = 'https://hcaptcha.com/1/api.js?onload=__globalShowHcaptcha&render=explicit';
+				document.head.append(script);
+			}
+		}
+
+		rl.addHook('user-login-submit', fSubmitResult => {
+			if (null !== nId && !window.hcaptcha.getResponse(nId))
+			{
+				fSubmitResult(105);
+			}
+		});
+
+		rl.addHook('view-model-on-show', (sName, oViewModel) => {
+			if (!bStarted && oViewModel && 'LoginUserView' === sName
+			 && rl.pluginSettingsGet('hcaptcha', 'show_captcha_on_login'))
+			{
+				bStarted = true;
+				StartHcaptcha();
+			}
+		});
+
+		rl.addHook('json-default-request', (sAction, oParameters) => {
+			if ('Login' === sAction && oParameters && null !== nId && window.hcaptcha)
+			{
+				oParameters['h-captcha-response'] = hcaptcha.getResponse(nId);
+			}
+		});
+
+		rl.addHook('json-default-response', (sAction, oData, sType) => {
+			if ('Login' === sAction)
+			{
+				if (!oData || 'success' !== sType || !oData['Result'])
+				{
+					if (null !== nId && window.hcaptcha)
+					{
+						hcaptcha.reset(nId);
+					}
+					else if (oData && oData['Captcha'])
+					{
+						StartHcaptcha();
+					}
+				}
+			}
+		});
+	}
+})(window.rl);