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124 lines
4.3 KiB
124 lines
4.3 KiB
<?php
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// Initialize the session
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session_start();
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// Check if the user is already logged in, if yes then redirect him to frequency page
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if(isset($_SESSION["loggedin"]) && $_SESSION["loggedin"] === true){
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header("location: frequency.php");
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exit;
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}
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// Include config file
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require_once "configure.php";
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// Define variables and initialize with empty values
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$callsign = $password = "";
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$callsign_err = $password_err = "";
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// Processing form data when form is submitted
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if ($_SERVER["REQUEST_METHOD"] == "POST") {
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// Check if callsign is empty
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if (empty(trim($_POST["callsign"]))) {
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$callsign_err = "Please enter your callsign.";
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} else {
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$callsign = strtoupper(trim($_POST["callsign"]));
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}
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// Check if password is empty
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if (empty(trim($_POST["password"]))) {
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$password_err = "Please enter your password.";
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} else {
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$password = trim($_POST["password"]);
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}
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// Validate credentials
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if (empty($callsign_err) && empty($password_err)) {
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// Prepare a select statement
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$sql = "SELECT callsign, password FROM users WHERE callsign = ?";
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if ($stmt = mysqli_prepare($link, $sql)) {
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "s", $param_callsign);
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// Set parameters
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$param_callsign = $callsign;
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// Attempt to execute the prepared statement
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if (mysqli_stmt_execute($stmt)) {
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// Store result
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mysqli_stmt_store_result($stmt);
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// Check if callsign exists, if yes then verify password
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if (mysqli_stmt_num_rows($stmt) == 1) {
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// Bind result variables
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mysqli_stmt_bind_result($stmt, $callsign, $hashed_password);
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if (mysqli_stmt_fetch($stmt)) {
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if (password_verify($password, $hashed_password)) {
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// Password is correct, so start a new session
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session_start();
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// Store data in session variables
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$_SESSION["loggedin"] = true;
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$_SESSION["callsign"] = $callsign;
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// Redirect user to frequency page
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header("location: frequency.php");
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} else {
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// Display an error message if password is not valid
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$password_err = "The password you entered was not valid.";
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}
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}
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} else {
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// Display an error message if callsign doesn't exist
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$callsign_err = "No account found with that callsign.";
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}
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} else {
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echo "Oops! Something went wrong. Please try again later.";
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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}
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// Close connection
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mysqli_close($link);
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}
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Login</title>
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<link rel="stylesheet" href="bootstrap.css">
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<style type="text/css">
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body{ font: 14px sans-serif; }
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.wrapper{ width: 350px; padding: 20px; }
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</style>
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</head>
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<body>
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<div class="wrapper">
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<h2>Login</h2>
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<p>Login with your hot-spot callsign.</p>
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<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
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<div class="form-group <?php echo (!empty($callsign_err)) ? 'has-error' : ''; ?>">
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<label>Username</label>
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<input type="text" name="callsign" class="form-control" value="<?php echo $callsign; ?>">
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<span class="help-block"><?php echo $callsign_err; ?></span>
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</div>
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<div class="form-group <?php echo (!empty($password_err)) ? 'has-error' : ''; ?>">
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<label>Password</label>
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<input type="password" name="password" class="form-control">
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<span class="help-block"><?php echo $password_err; ?></span>
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</div>
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<div class="form-group">
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<input type="submit" class="btn btn-primary" value="Login">
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</div>
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<p>Don't have an account? <a href="register.php">Sign up now</a>.</p>
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</form>
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</div>
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</body>
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</html>
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