Added code to redirect the user if the database query returns a URL

redirect.php

@@ -0,0 +1,36 @@
+<?php
+	use Cassandra;
+
+	$uri = $_SERVER['REQUEST_URI'];
+	$uri = substr($uri,1);
+
+	$matches_uri = preg_match('/^[a-zA-Z]+$/',$uri);
+
+	if (($matches_uri == 0) || ($matches_uri == false)) {
+		header("Location: http://glink.zip/");
+	        exit;
+	} else {
+
+		$cluster = Cassandra::cluster()->withPersistentSessions(true)->build();
+		$keyspace = 'glink';
+		$session = $cluster->connect($keyspace);
+
+		$statement = $session->prepare('SELECT url FROM data WHERE shortlink=? ALLOW FILTERING;');
+		$result = $session->execute($statement,array('arguments' => array($uri)));
+
+		if ($result->count() == 0) {
+			printf('The given GLink was invalid, and doesn\'t point to a specific web page.');
+			exit;
+		}
+
+		foreach($result as $row) {
+			if (is_null($row)) {
+				printf('The given GLink was invalid, and doesn\'t point to a specific web page.');
+				exit;
+			} else {
+				header("Location: " . $row['url']);
+			}
+		}
+	}
+
+?>

result.js

@@ -1,14 +0,0 @@
-console.log('Beginning database execution');
-
-const cassandra = require('cassandra-driver');
-
-const client = new cassandra.Client({
-	contactPoints: ['127.0.0.1:9042'],
-	keyspace: 'glink',
-});
-
-const query = 'SELECT name FROM data WHERE id = ?';
-
-console.log(query);
-
-client.execute(query, [5]).then(result => console.log('User name is %s',result.rows[0].name));

result.php

@@ -6,24 +6,30 @@ $cluster = Cassandra::cluster()->build();
 $keyspace = 'glink';
 
 $url = $_GET["url"];
+$matches = preg_match('/^http(s)*:\\/\\/[a-zA-Z0-9\\-]+(\\.[a-zA-Z0-9\\-]+)+$/',$url);
+if (($matches == 0) || ($matches == false)) {
+	printf("The URL entered was invalid. Please try again.");
+	return;
+}
+
 $shortlink = $_GET["glink"];
+$matches_shortlink = preg_match('/^[a-zA-Z]+$/',$shortlink);
+if (($matches_shortlink == 0) || ($matches_shortlink == false)) {
+        printf("The GLink entered was invalid. The GLink can only contain letters. Please try again.");
+        return;
+}
+
 
 $session = $cluster->connect($keyspace);
 
 //$statement = new Cassandra\SimpleStatement('SELECT name FROM data WHERE id=5');
 $rand_num = rand(0,99999999);
 
-$values = array(
-	'id' => $rand_num,
-	'url' => $url,
-	'shortlink' => $shortlink,
-);
-$statement = new Cassandra\SimpleStatement('INSERT INTO data (id, url, shortlink, when_created) VALUES (?,?,?,toTimestamp(now()))');
-$options = array('arguments' => $values);
-$result = $session->execute($statement,$options);
+$statement = $session->prepare('INSERT INTO data (id, url, shortlink, when_created) VALUES (?,?,?,toTimestamp(now()))');
+$result = $session->execute($statement,array('arguments' => array($rand_num,$url,$shortlink)));
 
-$statement = new Cassandra\SimpleStatement('SELECT url,shortlink FROM data WHERE id=?');
-$options = array('arguments' => array('id' => $rand_num));
+$statement = $session->prepare('SELECT url,shortlink FROM data WHERE id=?');
+$options = array('arguments' => array($rand_num));
 $result = $session->execute($statement,$options);
 
 //$stringRepresentation= json_encode($result[0]);