Handle 404 redirect

StillFantastic · StillFantastic · commit f699759dedad · 2019-11-17T03:26:45.000+08:00
diff --git a/public/404.html b/public/404.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Cypherpunks CTF</title>
+    <script type="text/javascript">
+      // Single Page Apps for GitHub Pages
+      // https://github.com/rafrex/spa-github-pages
+      // Copyright (c) 2016 Rafael Pedicini, licensed under the MIT License
+      // ----------------------------------------------------------------------
+      // This script takes the current url and converts the path and query
+      // string into just a query string, and then redirects the browser
+      // to the new url with only a query string and hash fragment,
+      // e.g. http://www.foo.tld/one/two?a=b&c=d#qwe, becomes
+      // http://www.foo.tld/?p=/one/two&q=a=b~and~c=d#qwe
+      // Note: this 404.html file must be at least 512 bytes for it to work
+      // with Internet Explorer (it is currently > 512 bytes)
+      // If you're creating a Project Pages site and NOT using a custom domain,
+      // then set segmentCount to 1 (enterprise users may need to set it to > 1).
+      // This way the code will only replace the route part of the path, and not
+      // the real directory in which the app resides, for example:
+      // https://username.github.io/repo-name/one/two?a=b&c=d#qwe becomes
+      // https://username.github.io/repo-name/?p=/one/two&q=a=b~and~c=d#qwe
+      // Otherwise, leave segmentCount as 0.
+      var segmentCount = 1;
+      var l = window.location;
+      l.replace(
+        l.protocol + '//' + l.hostname + (l.port ? ':' + l.port : '') +
+        l.pathname.split('/').slice(0, 1 + segmentCount).join('/') + '/?p=/' +
+        l.pathname.slice(1).split('/').slice(segmentCount).join('/').replace(/&/g, '~and~') +
+        (l.search ? '&q=' + l.search.slice(1).replace(/&/g, '~and~') : '') +
+        l.hash
+      );
+    </script>
+  </head>
+  <body>
+  </body>
+</html>
diff --git a/public/index.html b/public/index.html
@@ -7,6 +7,35 @@
     <link rel="shortcut icon" href="%PUBLIC_URL%/imgs/favicon.ico">
     <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
     <title>Cypherpunks CTF</title>
+    <script type="text/javascript">
+      // Single Page Apps for GitHub Pages
+      // https://github.com/rafrex/spa-github-pages
+      // Copyright (c) 2016 Rafael Pedicini, licensed under the MIT License
+      // ----------------------------------------------------------------------
+      // This script checks to see if a redirect is present in the query string
+      // and converts it back into the correct url and adds it to the
+      // browser's history using window.history.replaceState(...),
+      // which won't cause the browser to attempt to load the new url.
+      // When the single page app is loaded further down in this file,
+      // the correct url will be waiting in the browser's history for
+      // the single page app to route accordingly.
+      (function(l) {
+        if (l.search) {
+          var q = {};
+          l.search.slice(1).split('&').forEach(function(v) {
+            var a = v.split('=');
+            q[a[0]] = a.slice(1).join('=').replace(/~and~/g, '&');
+          });
+          if (q.p !== undefined) {
+            window.history.replaceState(null, null,
+              l.pathname.slice(0, -1) + (q.p || '') +
+              (q.q ? ('?' + q.q) : '') +
+              l.hash
+            );
+          }
+        }
+      }(window.location))
+    </script>
 </head>
 
 <body>
