From 2c60afae4373ee0cc0320e4036b63942f9f60760 Mon Sep 17 00:00:00 2001
From: ECHibiki <ecverniy@gmail.com>
Date: Wed, 27 Oct 2021 10:52:50 -0400
Subject: [PATCH] duplicate saftey

---
 package-lock.json            |  2 +-
 src/channel/anonymouspost.js | 92 ++++++++++++--------------------------------
 2 files changed, 26 insertions(+), 68 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c979190f..56dd711b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "CyTube",
-  "version": "3.82.6",
+  "version": "3.82.8",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/src/channel/anonymouspost.js b/src/channel/anonymouspost.js
index eead18c1..e7bb50c5 100755
--- a/src/channel/anonymouspost.js
+++ b/src/channel/anonymouspost.js
@@ -10,7 +10,7 @@ function makeIPHash(ip) {
 			numeric += ip.charAt(i);
 		}
 	}
-	numeric = parseInt(numeric); 	
+	numeric = parseInt(numeric);
 	return  makeID((numeric * 13) % 1000000);
 }
 
@@ -26,71 +26,14 @@ function makeID(id_number){
 	return processed_string;
 }
 
+// Xaekai on Jan 14, 2019
 function convertNumToIDChar(num){
-	switch(num){
-		case "0": return 'a';
-		case "1": return 'b';
-		case "2": return 'c';
-		case "3": return 'd';
-		case "4": return 'e';
-		case "5": return 'f';
-		case "6": return 'g';
-		case "7": return 'h';
-		case "8": return 'i';
-		case "9": return 'j';
-		case "10": return 'k';
-		case "11": return 'l';
-		case "12": return 'm';
-		case "13": return 'n';
-		case "14": return 'o';
-		case "15": return 'p';
-		case "16": return 'q';
-		case "17": return 'r';
-		case "18": return 's';
-		case "19": return 't';
-		case "20": return 'u';
-		case "21": return 'v';
-		case "22": return 'w';
-		case "23": return 'x';
-		case "24": return 'y';
-		case "25": return 'z';
-		case "26": return 'A';
-		case "27": return 'B';
-		case "28": return 'C';
-		case "29": return 'D';
-		case "30": return 'E';
-		case "31": return 'F';
-		case "32": return 'G';
-		case "33": return 'H';
-		case "34": return 'I';
-		case "35": return 'J';
-		case "36": return 'K';
-		case "37": return 'L';
-		case "38": return 'M';
-		case "39": return 'N';
-		case "40": return 'O';
-		case "41": return 'P';
-		case "42": return 'Q';
-		case "43": return 'R';
-		case "44": return 'S';
-		case "45": return 'T';
-		case "46": return 'U';
-		case "47": return 'V';
-		case "48": return 'W';
-		case "49": return 'X';
-		case "50": return 'Y';
-		case "51": return 'Z';
-		case "52": return '1';
-		case "53": return '2';
-		case "54": return '3';
-		case "55": return '4';
-		case "56": return '5';
-		case "57": return '6';
-		case "58": return '7';
-		case "59": return '8';
-		case "60": return '9';
-		case "61": return '0';
-
+	const i = parseInt(num, 10);
+	switch(true){
+		case i > -1 && i < 26: return String.fromCharCode(i+97);
+		case i > 25 && i < 52: return String.fromCharCode(i+39);
+		case i > 51 && i < 61: return String.fromCharCode(i-3);
+		case i === 61: return '0';
 	}
 	console.log('notret');
 }
@@ -105,13 +48,28 @@ AnonymousPost.prototype.onUserPreJoin = function (user, data, cb) {
     const opts = this.channel.modules.options;
     var anonymousPosting = opts.get("allow_anon_chat");
 	if(anonymousPosting && user.isAnonymous()){
-		user.guestLogin("Anonymous-" + makeIPHash(user.realip) +"");
+		var hash = makeIPHash(user.realip);
+		var anon_name = "Anonymous-" + hash;
+		var duplicate_solution = 0;
+		var duplicate_found = false;
+		do{
+			duplicate_found = false;
+			user.channel.users.forEach((user, i) => {
+				if (!duplicated_found && user.account.name == anon_name){
+					duplicate_solution++;
+					anon_name = "Anonymous-" + hash + duplicate_solution;
+					duplicate_found = true;
+				}
+			});
+		}
+		while(duplicated_found);
+		user.guestLogin(anon_name);
 		cb(null, ChannelModule.PASSTHROUGH);
 	}
 	else{
 		cb(null, ChannelModule.PASSTHROUGH);
 	}
-}; 
+};
 
 module.exports = AnonymousPost;
 //# sourceMappingURL=anonymouspost.js.map
\ No newline at end of file
-- 
2.11.4.GIT