mirror of
https://github.com/AuthMe/AuthMeReloaded.git
synced 2024-09-18 18:01:22 +02:00
68 lines
2.6 KiB
PHP
68 lines
2.6 KiB
PHP
<?php
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/*****************************************************************************
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* AuthMe website integration logic *
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* -------------------------------- *
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* Check with authme_check_password() whether the received username and *
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* password match the AuthMe MySQL database. Don't forget to adjust the *
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* database info in authme_get_hash(). *
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* *
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* Source: https://github.com/AuthMe-Team/AuthMeReloaded/ *
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*****************************************************************************/
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/**
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* Entry point function to check supplied credentials against the AuthMe database.
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*
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* @param string $username the username
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* @param string $password the password
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* @return bool true iff the data is correct, false otherwise
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*/
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function authme_check_password($username, $password) {
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if (is_scalar($username) && is_scalar($password)) {
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$hash = authme_get_hash($username);
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if ($hash) {
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return authme_check_hash($password, $hash);
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}
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}
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return false;
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}
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/**
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* Retrieves the hash associated with the given user from the database.
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*
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* @param string $username the username whose hash should be retrieved
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* @return string|null the hash, or null if unavailable (e.g. username doesn't exist)
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*/
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function authme_get_hash($username) {
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// Add here your database host, username, password and database name
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$mysqli = new mysqli('HOST', 'USER', 'PWD', 'DB');
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$authme_table = 'authme';
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if (mysqli_connect_error()) {
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printf('Could not connect to AuthMe database. Errno: %d, error: "%s"',
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mysqli_connect_errno(), mysqli_connect_error());
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} else {
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$stmt = $mysqli->prepare("SELECT password FROM $authme_table WHERE username = ?");
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$stmt->bind_param('s', $username);
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$stmt->execute();
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$stmt->bind_result($password);
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if ($stmt->fetch()) {
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return $password;
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}
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}
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return null;
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}
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/**
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* Checks the given clear-text password against the hash.
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*
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* @param string $password the clear-text password to check
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* @param string $hash the hash to check the password against
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* @return bool true iff the password matches the hash, false otherwise
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*/
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function authme_check_hash($password, $hash) {
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// $SHA$salt$hash, where hash := sha256(sha256(password) . salt)
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$parts = explode('$', $hash);
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return count($parts) === 4
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&& $parts[3] === hash('sha256', hash('sha256', $password) . $parts[2]);
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}
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