so I have this php code for my website I'm working on, it's a messaging site, it was working earlier today, but then I tried adding a new password feature, which wasn't working so I restored what I thought was a working version. On the earlier version if I hit the the enter button on the login page and it'd take me straight to the website, now it's giving me this weird issue where when I enter the site for the "first time" it gives me a 500 error, and it's telling me the url is: http://3.99.183.22/index.php, I then have to hit the back button and then it works, and the chat screen loads, with the url: http://3.99.183.22/#, I can then edit the url to be: http://3.99.183.22/index.php and it works still. It's also not working on mobile because of this issue now. Any ideas?
<?php
session_start();
if(isset($_GET['logout'])){
//Simple exit message
$logout_message = "<div class='msgln'><span class='left-info'>User <b class='user-name-left'>". $_SESSION['name'] ."</b> has left the chat session.</span><br></div>";
file_put_contents("log.html", $logout_message, FILE_APPEND | LOCK_EX);
session_destroy();
header("Location: index.php"); //Redirect the user
}
if(isset($_POST['enter'])){
if($_POST['name'] != ""){
$username=$_SESSION['name'] = stripslashes(htmlspecialchars($_POST['name']));
// echo $username;
// $password = $_SESSION['password'] = stripslashes(htmlspecialchars($_POST['password']));
// echo $password;
$dbname = 'Hermes_Global';
$dbuser = 'dbmasteruser';
$dbpass = 'youdonthavetoseemypassword';
$dbhost = 'someawsconnectionthatsworking';
$link = mysqli_connect($dbhost, $dbuser, $dbpass) or die("Unable to Connect to '$dbhost'");
mysqli_select_db($link, $dbname) or die("Could not open the db '$dbname'");
$sql = "INSERT INTO user_test (username) VALUES(?)";
$stmt = $link->prepare($sql);
$stmt->bind_param("s", $username);
$stmt->execute();
// if($stmt->execute()) {
// echo "New record entered successfully";
// }
// else {
// echo $stmt->error;
// }
mysqli_close($link);
}
else{
echo '<span class="error">Please type in a name</span>';
}
}
function loginForm(){
echo
'<div id="loginform">
<p>Please enter your a username</p>
<form action="index.php" method="post">
<label for="name">Username</label>
<input type="text" name="name" id="name" />
<input type="submit" name="enter" id="enter" value="Enter" />
</form>
</div>';
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Hermes Chat Application</title>
<meta name="description" content="Hermes Chat Application" />
<link rel="stylesheet" href="style.css" />
</head>
<body>
<?php
if(!isset($_SESSION['name'])){
loginForm();
}
else {
?>
<div id="wrapper">
<div id="menu">
<p class="welcome">Welcome, <b><?php echo $_SESSION['name']; ?></b></p>
<p class="logout"><a id="exit" href="#">Exit Chat</a></p>
</div>
<div id="chatbox">
<?php
if(file_exists("log.html") && filesize("log.html") > 0){
$contents = file_get_contents("log.html");
echo $contents;
}
?>
</div>
<form name="message" action="">
<input name="usermsg" type="text" id="usermsg" />
<input name="submitmsg" type="submit" id="submitmsg" value="Send" />
</form>
</div>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script type="text/javascript">
// jQuery Document
$(document).ready(function () {
$("#submitmsg").click(function () {
var clientmsg = $("#usermsg").val();
// console.log(clientmsg);
$.post("post.php", { text: clientmsg });
$("#usermsg").val("");
return false;
});
function loadLog() {
var oldscrollHeight = $("#chatbox")[0].scrollHeight - 20; //Scroll height before the request
$.ajax({
url: "log.html",
cache: false,
success: function (html) {
$("#chatbox").html(html); //Insert chat log into the #chatbox div
//Auto-scroll
var newscrollHeight = $("#chatbox")[0].scrollHeight - 20; //Scroll height after the request
if(newscrollHeight > oldscrollHeight){
$("#chatbox").animate({ scrollTop: newscrollHeight }, 'normal'); //Autoscroll to bottom of div
}
}
});
}
setInterval (loadLog, 2500);
$("#exit").click(function () {
var exit = confirm("Are you sure you want to end the session?");
if (exit == true) {
window.location = "index.php?logout=true";
}
});
});
</script>
</body>
</html>
<?php
}
?>
Note that I also have a file called post.php, which looks like this:
<?php
session_start();
if(isset($_SESSION['name'])){
$text = $_POST['text'];
$dbname = 'Hermes_Global';
$dbuser = 'dbmasteruser';
$dbpass = 'mypassword'; //i'm not publicly sharing the passwords
$dbhost = 'theawsdatabase';
$link = mysqli_connect($dbhost, $dbuser, $dbpass) or die("Unable to Connect to '$dbhost'");
echo $text;
$text_message = "<div class='msgln'><span class='chat-time'>".date("g:i A")."</span> <b class='user-name'>".$_SESSION['name']."</b> ".stripslashes(htmlspecialchars($text))."<br></div>";
file_put_contents("log.html", $text_message, FILE_APPEND | LOCK_EX);
}
?>
