201 lines
7.1 KiB
PHP
201 lines
7.1 KiB
PHP
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<?php
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include("header.php");
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// Define variables and initialize with empty values
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$email = "";
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$email_err = "";
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function query_user($email, $link)
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{
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// Prepare a select statement
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$sql = "SELECT username, id FROM users WHERE email = ?";
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$username = "";
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$user_id = "";
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if($stmt = mysqli_prepare($link, $sql))
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{
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "s", $param_email);
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// Set parameters
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$param_email = $email;
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// Attempt to execute the prepared statement
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if(mysqli_stmt_execute($stmt))
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{
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// Store result
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mysqli_stmt_store_result($stmt);
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if(mysqli_stmt_num_rows($stmt) == 1)
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{
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mysqli_stmt_bind_result($stmt, $username, $user_id);
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mysqli_stmt_fetch($stmt);
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}
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}
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else
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{
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printf("Error: %s.\n", mysqli_stmt_error($stmt));
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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return [$username, $user_id];
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}
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function is_login_request_active($user_id, $link)
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{
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// Prepare a select statement
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$sql = "SELECT * FROM user_one_time_access_token WHERE user_id = ?";
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$result;
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if($stmt = mysqli_prepare($link, $sql))
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{
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "s", $param_id);
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// Set parameters
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$param_id = $user_id;
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// Attempt to execute the prepared statement
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if(mysqli_stmt_execute($stmt))
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{
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// Store result
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mysqli_stmt_store_result($stmt);
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if(mysqli_stmt_num_rows($stmt) == 1)
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{
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$result = true;
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}
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else
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{
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$result = false;
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}
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}
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else
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{
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printf("Error: %s.\n", mysqli_stmt_error($stmt));
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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return $result;
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}
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// Processing form data when form is submitted
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if(isset($_SERVER["REQUEST_METHOD"]) && $_SERVER["REQUEST_METHOD"] == "POST")
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{
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// Check if email is empty
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if(empty(trim($_POST["email"])))
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{
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$email_err = "Prosím zadejte váš email.";
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}
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else
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{
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$email = trim($_POST["email"]);
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}
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// Validate credentials
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if(empty($email_err))
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{
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[$username, $user_id] = query_user($email, $link);
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if(empty($user_id))
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{
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$email_err = "Tento email u nás není zaregistrovaný.";
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}
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else if(is_login_request_active($user_id, $link))
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{
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$email_err = "Pro tuto adresu již je aktivní token. Zkontrolujte svou e-mailovou schránku.";
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}
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else
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{
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// Add the user to awaiting approval list
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$sql = "INSERT INTO user_one_time_access_token (user_id , expires_on, access_key) VALUES (?, ?, ?)";
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if($stmt = mysqli_prepare($link, $sql))
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{
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "sss", $param_id, $param_expiry_date, $param_key);
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$param_id = $user_id;
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$param_expiry_date = date("Y-m-d H:i:s", strtotime('+15 minutes'));
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$param_key = GenerateUUID();
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// redirect to the page that tells you to verify your email
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if(mysqli_stmt_execute($stmt))
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{
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$to = $email;
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$subject = "Obnovení hesla";
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$message = "
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<html>
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<head>
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<title>Obnovení hesla</title>
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</head>
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<body style=\"font-family: 'Times New Roman', Times, serif; font-size: large;\">
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<h1>Někdo požádal o obnovení hesla tohoto účtu</h1>
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<p>
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Právě jsme přijali tvou žádost o obnovení hesla pro účet".$username." na <a href=\"https://pastafarianstvi.cz\" style=\"text-decoration: none; border-bottom: dotted black thin;\">pastafariánství webstránky</a>. Pro jednorázové přihlášení do svého účtu a následnou změnu hesla klikni na tlačítko níže nebo jdi na odkaz pod ním.
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</p>
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<form action=\"https://pastafarianstvi.cz/oneTimeEmailLogin.php\" method=\"get\">
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<input type=\"hidden\" id=\"user_id\" name=\"user_id\" value=\"".bin_to_uuid($param_id)."\">
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<input type=\"hidden\" id=\"access_key\" name=\"access_key\" value=\"".bin_to_uuid($param_key)."\">
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<input type=\"submit\" value=\"Klikni sem pro potvrzení registrace\" />
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</form>
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<a href=\"https://pastafarianstvi.cz/oneTimeEmailLogin.php/_?user_id=".bin_to_uuid($param_id)."&access_key=".bin_to_uuid($param_key)."\" style=\"text-decoration: none; border-bottom: dotted black thin;\">https://pastafarianstvi.cz/oneTimeEmailLogin.php/_?user_id=".bin_to_uuid($param_id)."&access_key=".bin_to_uuid($param_key)."</a>
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<hr>
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<p>
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Nebyl jsi to vy? Nevadí, stačí tento e-mail ignorovat, bez tvojí akce nebudeme nic měnit.
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</p>
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</body>
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</html>
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";
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$headers = array(
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"MIME-Version" => "1.0",
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"Content-type" => "text/html; charset=UTF-8",
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"from" => "Pastafariánství noreply <noreply@pastafarianstvi.cz>",
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"X-mailer" => "phpWebmail"
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);
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mail($to, $subject, $message, $headers);
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echo("
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<h3>Úspěch! Zaslali jsme odkaz pro jednorázové přihlášení na váš e-mail.</h3>
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<p>
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Nečekejte s tím! Token po 15 minutách vyprchá.
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</p>
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");
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}
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else
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{
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printf("Error: %s.\n", mysqli_stmt_error($stmt));
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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else
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{
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printf("Error: %s.\n", mysqli_stmt_error($stmt));
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}
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}
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}
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}
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?>
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<article>
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<h2>Zapomenuté heslo</h2>
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<p>
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Zadejte svůj e-mail, zašleme vám jednorázový odkaz pro přihlášení se do svého účtu.
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</p>
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<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
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<table>
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<tr>
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<td><label>E-mail: </label></td>
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<td><input type="text" name="email" class="form-control <?php echo (!empty($email_err)) ? 'is-invalid' : ''; ?>" value="<?php echo $email; ?>"/></td>
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<td><span class="invalid-feedback"><?php echo $email_err; ?></span></td>
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</tr>
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</table>
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<input type="submit" class="btn btn-primary" value="Obnovit heslo"/>
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</form>
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</article>
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<?php include("footer.php");?>
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