S2OJ/web/app/libs/uoj-validate-lib.php

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<?php
function validateUsername($username) {
return is_string($username) && preg_match('/^[a-zA-Z0-9_]{1,20}$/', $username);
}
function validatePassword($password) {
return is_string($password) && preg_match('/^[a-z0-9]{32}$/', $password);
}
function validateEmail($email) {
return is_string($email) && strlen($email) <= 50 && preg_match('/^(.+)@(.+)$/', $email);
}
function validateQQ($QQ) {
return is_string($QQ) && strlen($QQ) <= 15 && preg_match('/^[0-9]{5,15}$/', $QQ);
}
function validateMotto($motto) {
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return is_string($motto) && ($len = mb_strlen($motto, 'UTF-8')) !== false && $len <= 1024;
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}
function validateUInt($x, $len = 8) { // [0, 1000000000)
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if (!is_string($x)) {
return false;
}
if ($x === '0') {
return true;
}
return preg_match('/^[1-9][0-9]{0,'.$len.'}$/', $x);
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}
function validateInt($x) {
if (!is_string($x)) {
return false;
}
if ($x[0] == '-') {
$x = substr($x, 1);
}
return validateUInt($x);
}
function validateUploadedFile($name) {
return isset($_FILES[$name]) && is_uploaded_file($_FILES[$name]['tmp_name']);
}
function validateIP($ip) {
return filter_var($ip, FILTER_VALIDATE_IP) !== false;
}
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function validateURL($url) {
return filter_var($url, FILTER_VALIDATE_URL) !== false;
}
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function validateString($str) {
return preg_match('/[^0-9a-zA-Z]/', $str) !== true;
}
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function validateGitHubUsername($username) {
return is_string($username) && preg_match('/^[a-zA-Z0-9_-]{1,20}$/', $username);
}
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function validateUserAndStoreByUsername($username, &$vdata) {
if (!isset($vdata['user'])) {
$vdata['user'] = [];
}
$user = UOJUser::query($username);
if (!$user) {
return "不存在名为{$username}的用户";
}
$vdata['user'][$username] = $user;
return '';
}
function is_short_string($str) {
return is_string($str) && strlen($str) <= 256;
}
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function validateCodeforcesProblemId($str) {
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return preg_match('/^(|GYM)[1-9][0-9]{0,5}[A-Z][1-9]?$/', $str);
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}
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function validateLuoguProblemId($str) {
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return preg_match('/^P[1-9][0-9]{3,5}$/', $str);
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}