1 files changed, 66 insertions, 0 deletions
diff --git a/src/renderer/gameserver/TOSCheck.ts b/src/renderer/gameserver/TOSCheck.ts
new file mode 100644
index 0000000..8dc29f2
--- /dev/null
+++ b/src/renderer/gameserver/TOSCheck.ts
@@ -0,0 +1,66 @@
+import GameServer from './server';
+import { ipcRenderer } from 'electron';
+
+let LAST_TOS = "";
+
+export default async function CheckNAcceptTOS(server:GameServer):Promise<boolean>{
+  try{
+    let thisVersion = await getTOSVersion(server.TOSLink);
+    console.log(server.TOSLink,thisVersion);
+    LAST_TOS=thisVersion;
+    return (localStorage.getItem(server.TOSLink) == thisVersion);
+
+  } catch (err) {
+    console.log("TOS check Error",err);
+    return true
+  }
+
+}
+
+async function getTOSVersion(address:string):Promise<string>{
+  // Returns date or if not found the hash of the whole page
+  const PageContent = await request(address);
+  const date = PageContent.match(/Last Update: \d\d\d\d-\d\d-\d\d/g);
+  let hash:string;
+  if(!date || date.length > 1){
+    hash = HashString(PageContent.replace(/ |\t|\n/g,"").replace(/<.+?>/g, "r")).toString(16);
+  } else {
+    hash = date[0].replace(/ /g,"");
+  }
+
+  return hash;
+}
+
+function request(url:string):Promise<string>{
+  return new Promise((res, rej)=>{
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', url);
+      xhr.onload = function() {
+        if (xhr.status === 200) {
+          res(xhr.responseText);
+        }
+        else {
+          rej(new Error(`xhr.status: ${xhr.status} != 200`));
+        }
+      };
+      xhr.send();
+  });
+}
+
+
+
+// Hash function from http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
+function HashString (s:string){
+	let hash = 0;
+	if (s.length == 0) return hash;
+	for (let i = 0; i < s.length; i++) {
+		let char = s.charCodeAt(i);
+		hash = ((hash<<5)-hash)+char;
+		hash = hash & hash; // Convert to 32bit integer
+	}
+	return hash;
+}
+
+export function acceptLastTOS(server:GameServer){
+  localStorage.setItem(server.TOSLink, LAST_TOS);
+}