115 lines
3.5 KiB
PHP
115 lines
3.5 KiB
PHP
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<?php
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/**
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* 真实页 URL 解析（DB_FP 轮询 + KEEP_PARAMS）
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*/
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class FpUrlHelper
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{
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/**
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* 解析本次应跳转的真实页 URL（与 FpPageRenderer / f_check 逻辑一致）
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*
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* @param string $configName check_config 配置名（如 index）
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* @param bool $mutateNt 是否更新 nt.txt / nt Cookie（f_check 通过时为 true）
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* @return array{url:string,now_url:int}
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*/
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public static function resolve($configName, $mutateNt = true)
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{
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$all_fp_url = DB_FP;
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$num = is_array($all_fp_url) ? count($all_fp_url) : 1;
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$now_url = 0;
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if ($num < 1) {
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return ['url' => is_string($all_fp_url) ? (string) $all_fp_url : '', 'now_url' => 0];
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}
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if (isset($_COOKIE['nt']) && is_numeric($_COOKIE['nt'])) {
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$ntCookie = (int) $_COOKIE['nt'];
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if ($ntCookie >= 1 && $ntCookie <= $num) {
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$now_url = $ntCookie;
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}
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}
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if (!$now_url) {
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$match = false;
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$nt = 2;
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$ot = false;
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$handle = @fopen('nt.txt', 'r');
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if ($handle) {
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while (!feof($handle)) {
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$buffer = fgets($handle);
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$bb = explode('||||||', $buffer);
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if (trim($bb[0] ?? '') !== $configName) {
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continue;
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}
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if (!isset($bb[1]) || trim($bb[1]) === '') {
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continue;
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}
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$match = true;
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$ot = trim($bb[1]);
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$nt = trim($bb[1]);
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break;
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}
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fclose($handle);
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}
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if ($match) {
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if ((int) $nt <= $num) {
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$now_url = max(1, (int) $ot);
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$nt = (int) $nt + 1;
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} else {
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$now_url = 1;
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$nt = 2;
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}
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} else {
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$now_url = 1;
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$nt = 2;
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}
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if ($mutateNt) {
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write_nt_list($configName, $nt, $ot);
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}
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}
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if (is_array($all_fp_url)) {
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$idx = max(0, min(max(1, (int) $now_url) - 1, $num - 1));
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$fp_url = $all_fp_url[$idx];
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$now_url = $idx + 1;
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} else {
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$fp_url = (string) $all_fp_url;
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}
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if ($mutateNt) {
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setCrossDomainCookie('nt', $now_url, 3600 * 24 + time());
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}
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if (defined('KEEP_PARAMS') && KEEP_PARAMS === 'ON' && !empty($_GET) && $fp_url !== '') {
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$params = http_build_query($_GET);
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$urlParts = parse_url($fp_url);
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if (isset($urlParts['query'])) {
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$fp_url .= '&' . $params;
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} else {
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$fp_url .= '?' . $params;
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}
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}
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return ['url' => (string) $fp_url, 'now_url' => (int) $now_url];
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}
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/**
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* 真实页 / 安全页兜底 URL（DB_FP 首项，否则 DB_ZP）
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*/
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public static function fallbackUrl()
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{
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$all = DB_FP;
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if (is_array($all)) {
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foreach ($all as $u) {
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if (trim((string) $u) !== '') {
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return (string) $u;
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}
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}
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} elseif (is_string($all) && trim($all) !== '') {
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return $all;
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}
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return defined('DB_ZP') ? (string) DB_ZP : '';
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}
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}
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