Untitled

Assignment 4.html

<!DOCTYPE html>
<HTML>

	<HEAD>

		<TITLE>3η εργαστηριακή άσκηση</TITLE>
		<style>
			h1 {color: #0000ff;}
		</style>

		<script language="Javascript">

			var counter=0;

			function setCookie(name, value)	{
				document.cookie= name + "=" + value;
			}

			function getCookie(name)	{
				var nameEQ = name + "=";
				var ca = document.cookie.split(';');

				for(var i=0;i < ca.length;i++)
				{
					var c = ca[i];
					while (c.charAt(0)==' ')
						c = c.substring(1);

					if (c.indexOf(nameEQ) != -1)
						return c.substring(nameEQ.length);
				}

				return null;
			}

			function showCookies()	{
				var name = getCookie("UsernameField");
				var prop = getCookie("PropertyField");
				var visits = getCookie("Visits");
				if (visits!=null)	{
					visits=parseInt(visits)+1;
					alert ("Hello " + name +", you are a " +prop +" and this is your visit no. "+visits);
					setCookie("Visits", visits);
				}
			}

			function FormVal()	{

				var usernameValue = document.Login.UsernameField.value;
				var passwordValue = document.Login.PasswordField.value;
				var propertyValue = document.Login.PropertyField.value;
				var visits= getCookie("Visits");

				//document.cookie= "Visits=" + counter;
				//document.cookie='Visits='+counter+'; expires=Fri, 3 Aug 2020 20:47:11 UTC';
				//counter++;

				if ( usernameValue == '' || passwordValue == '' )	{
					alert ("Error! No username or password provided");
					return(false);
				}
				else	{
					setCookie('UsernameField', usernameValue);
					setCookie('PasswordField', passwordValue);
					setCookie('PropertyField', propertyValue);
					if (visits!=null)	{
						visits=parseInt(visits)+1;
						setCookie("Visits", visits);
					}
					else {
						visits=1;
					}
					setCookie("Visits", visits);


					return(true);
				}
			}

			</script>
	</HEAD>

	<BODY>

		<h1>My first page
		</h1>

		<br /> <br />
		Homepage: <a href="http://www.cs.teikal.gr">http://www.cs.teikal.gr</a>
		<br />
		<br />

		My personal data: <br />

		<ul>
		<li><b>Dimitris Lilis Kokkoris</b></li>
		<li><i>AM: 2015072</i></li>
		<li><u>Tmima Mixanikwn Pliroforikis</u></li>
		</ul>

		<br /><br />
		<p> Please log in</p>
		<form name= "Login" method="post" action="http://localhost/readCookies.php"  onsubmit="return FormVal()">

			<input type="text" name= "UsernameField" placeholder= "username">
			<input type="password" name= "PasswordField" placeholder= "password">
			<br />

			<input type="radio" name="PropertyField" value="Student" checked>Student
			<input type="radio" name="PropertyField" value="Professor">Professor <br />

			<input type="submit"  value="Login"></input>
		</form>


	</BODY>


</HTML>
----------------------------------------------------------------------------------------------------------------------------------
showCookies.php

<HTML>

	<BODY>
		<?php

		echo "Read input parameter Username: " . $_POST["UsernameField"];
		echo "<br>";
		echo "Read input parameter Password: " . $_POST["PasswordField"];
		echo "<br>";
		echo "Read input parameter Property: " . $_POST["PropertyField"];
		echo "<br>";

		print "<br>";
		print "<br>";

		print "Read cookies: <br>";
		foreach ($_COOKIE as $key=>$val)
			{
					print ($key . " => " . $val . "<br/>");
			}
		?>

	</BODY>

</HTML>

----------------------------------------------------------------------------------------------------------------------------------
Assignment 5.html

<!DOCTYPE html>
<HTML>

	<HEAD>

		<TITLE>5η εργαστηριακή άσκηση</TITLE>
		<style>
			h1 {color: #0000ff;}
		</style>

		<script language="Javascript">

			var counter=0;

			function setCookie(name, value)	{
				document.cookie= name + "=" + value;
			}

			function getCookie(name)	{
				var nameEQ = name + "=";
				var ca = document.cookie.split(';');

				for(var i=0;i < ca.length;i++)
				{
					var c = ca[i];
					while (c.charAt(0)==' ')
						c = c.substring(1);

					if (c.indexOf(nameEQ) != -1)
						return c.substring(nameEQ.length);
				}

				return null;
			}

			function showCookies()	{
				var name = getCookie("UsernameField");
				var prop = getCookie("PropertyField");
				var visits = getCookie("Visits");
				if (visits!=null)	{
					visits=parseInt(visits)+1;
					alert ("Hello " + name +", you are a " +prop +" and this is your visit no. "+visits);
					setCookie("Visits", visits);
				}
			}

			function FormVal()	{

				var usernameValue = document.Login.UsernameField.value;
				var passwordValue = document.Login.PasswordField.value;
				var propertyValue = document.Login.PropertyField.value;
				var visits = getCookie("Visits");

				//document.cookie= "Visits=" + counter;
				//document.cookie='Visits='+counter+'; expires=Fri, 3 Aug 2020 20:47:11 UTC';
				//counter++;

				if ( usernameValue == '' || passwordValue == '' )	{
					alert ("Error! No username or password provided");
					return(false);
				}
				else	{
					setCookie('UsernameField', usernameValue);
					setCookie('PasswordField', passwordValue);
					setCookie('PropertyField', propertyValue);
					if (visits!=null)	{
						visits=parseInt(visits)+1;
						setCookie("Visits", visits);
					}
					else {
						visits=1;
					}
					setCookie("Visits", visits);

					return(true);
				}
			}

			</script>
	</HEAD>

	<BODY>

		<h1>My first page
		</h1>

		<br /> <br />
		Homepage: <a href="http://www.cs.teikal.gr">http://www.cs.teikal.gr</a>
		<br />
		<br />

		My personal data: <br />

		<ul>
		<li><b>Dimitris Lilis Kokkoris</b></li>
		<li><i>AM: 2015072</i></li>
		<li><u>Tmima Mixanikwn Pliroforikis</u></li>
		</ul>

		<br /><br />
		<p> Please log in</p>
		<form name= "Login" method="post" action="http://localhost/login.php"  onsubmit="return FormVal()">

			<input type="text" name= "UsernameField" placeholder= "username">
			<input type="password" name= "PasswordField" placeholder= "password">
			<br />

			<input type="radio" name="PropertyField" value="Student" checked>Student
			<input type="radio" name="PropertyField" value="Professor">Professor <br />

			<input type="submit"  value="Login"></input>
		</form>


	</BODY>


</HTML>

----------------------------------------------------------------------------------------------------------------------------------
login.php

<HTML>

	<BODY>

		<?php

			$username = $_POST["UsernameField"];
			$password = $_POST["PasswordField"];
			$database = "labusers";
			$DBusername = "root";
			$DBpassword = "";

			$conn = mysqli_connect("localhost", $DBusername, $DBpassword, $database);/* "root" , '' ,"labusers"); */
			if (!$conn) {
				die("Connection failed: " . mysqli_connect_error());
			}

			$query = mysqli_query($conn, "SELECT * FROM users WHERE username='" . $username . "' AND password= '" . $password . "'" );
			$rows = mysqli_num_rows($query);
			if ($rows!=0) {
				print ("User: " . $username . " successfully logged in!");
			}
			else {
				print ("Wrong credentials, login failed!");
			}


		?>

	</BODY>

</HTML>