30 lines
895 B
PHP
30 lines
895 B
PHP
<?php
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// Generates a token against CSRF
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// ==============================
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function generate_token($name = '') {
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if(session_id() == '')
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session_start();
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$token = uniqid(rand(), true);
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$_SESSION[$name.'_token'] = $token;
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$_SESSION[$name.'_token_time'] = time();
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return $token;
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}
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// Checks that the anti-CSRF token is correct
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// ==========================================
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function check_token($time, $name = '') {
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if(session_id() == '')
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session_start();
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if(isset($_SESSION[$name.'_token']) && isset($_SESSION[$name.'_token_time']) && isset($_POST['token'])) {
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if($_SESSION[$name.'_token'] == $_POST['token']) {
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if($_SESSION[$name.'_token_time'] >= (time() - (int) $time))
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return true;
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}
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}
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return false;
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}
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