[FIX] Links being embedded inside of blockquotes (#10496)

* Avoid embedding links inside blockquotes and remove doubles

packages/rocketchat-lib/server/functions/sendMessage.js

@@ -26,14 +26,30 @@ RocketChat.sendMessage = function(user, message, room, upsert = false) {
 	}
 
 	if (message.parseUrls !== false) {
-		const urls = message.msg.match(/([A-Za-z]{3,9}):\/\/([-;:&=\+\$,\w]+@{1})?([-A-Za-z0-9\.]+)+:?(\d+)?((\/[-\+=!:~%\/\.@\,\(\)\w]*)?\??([-\+=&!:;%@\/\.\,\w]+)?(?:#([^\s\)]+))?)?/g);
-
+		const urlRegex = /([A-Za-z]{3,9}):\/\/([-;:&=\+\$,\w]+@{1})?([-A-Za-z0-9\.]+)+:?(\d+)?((\/[-\+=!:~%\/\.@\,\(\)\w]*)?\??([-\+=&!:;%@\/\.\,\w]+)?(?:#([^\s\)]+))?)?/g;
+		const urls = message.msg.match(urlRegex);
 		if (urls) {
-			message.urls = urls.map(function(url) {
-				return {
-					url
-				};
-			});
+			// ignoredUrls contain blocks of quotes with urls inside
+			const ignoredUrls = message.msg.match(/(?:(?:\`{1,3})(?:[\n\r]*?.*?)*?)(([A-Za-z]{3,9}):\/\/([-;:&=\+\$,\w]+@{1})?([-A-Za-z0-9\.]+)+:?(\d+)?((\/[-\+=!:~%\/\.@\,\(\)\w]*)?\??([-\+=&!:;%@\/\.\,\w]+)?(?:#([^\s\)]+))?)?)(?:(?:[\n\r]*.*?)*?(?:\`{1,3}))/gm);
+			if (ignoredUrls) {
+				ignoredUrls.forEach((url) => {
+					const shouldBeIgnored = url.match(urlRegex);
+					if (shouldBeIgnored) {
+						shouldBeIgnored.forEach((match) => {
+							const matchIndex = urls.indexOf(match);
+							urls.splice(matchIndex, 1);
+						});
+					}
+				});
+			}
+			if (urls) {
+				// use the Set to remove duplicity, so it doesn't embed the same link twice
+				message.urls = [...new Set(urls)].map(function(url) {
+					return {
+						url
+					};
+				});
+			}
 		}
 	}