feat: initial commit

2026-06-14 14:00:24 +08:00
commit 72d388f642
118 changed files with 39015 additions and 0 deletions
@@ -0,0 +1,114 @@
+<?php
+/**
+ * 真实页 URL 解析（DB_FP 轮询 + KEEP_PARAMS）
+ */
+class FpUrlHelper
+{
+    /**
+     * 解析本次应跳转的真实页 URL（与 FpPageRenderer / f_check 逻辑一致）
+     *
+     * @param string $configName check_config 配置名（如 index）
+     * @param bool   $mutateNt   是否更新 nt.txt / nt Cookie（f_check 通过时为 true）
+     * @return array{url:string,now_url:int}
+     */
+    public static function resolve($configName, $mutateNt = true)
+    {
+        $all_fp_url = DB_FP;
+        $num        = is_array($all_fp_url) ? count($all_fp_url) : 1;
+        $now_url    = 0;
+
+        if ($num < 1) {
+            return ['url' => is_string($all_fp_url) ? (string) $all_fp_url : '', 'now_url' => 0];
+        }
+
+        if (isset($_COOKIE['nt']) && is_numeric($_COOKIE['nt'])) {
+            $ntCookie = (int) $_COOKIE['nt'];
+            if ($ntCookie >= 1 && $ntCookie <= $num) {
+                $now_url = $ntCookie;
+            }
+        }
+
+        if (!$now_url) {
+            $match = false;
+            $nt    = 2;
+            $ot    = false;
+            $handle = @fopen('nt.txt', 'r');
+            if ($handle) {
+                while (!feof($handle)) {
+                    $buffer = fgets($handle);
+                    $bb     = explode('||||||', $buffer);
+                    if (trim($bb[0] ?? '') !== $configName) {
+                        continue;
+                    }
+                    if (!isset($bb[1]) || trim($bb[1]) === '') {
+                        continue;
+                    }
+                    $match = true;
+                    $ot    = trim($bb[1]);
+                    $nt    = trim($bb[1]);
+                    break;
+                }
+                fclose($handle);
+            }
+
+            if ($match) {
+                if ((int) $nt <= $num) {
+                    $now_url = max(1, (int) $ot);
+                    $nt      = (int) $nt + 1;
+                } else {
+                    $now_url = 1;
+                    $nt      = 2;
+                }
+            } else {
+                $now_url = 1;
+                $nt      = 2;
+            }
+
+            if ($mutateNt) {
+                write_nt_list($configName, $nt, $ot);
+            }
+        }
+
+        if (is_array($all_fp_url)) {
+            $idx     = max(0, min(max(1, (int) $now_url) - 1, $num - 1));
+            $fp_url  = $all_fp_url[$idx];
+            $now_url = $idx + 1;
+        } else {
+            $fp_url = (string) $all_fp_url;
+        }
+
+        if ($mutateNt) {
+            setCrossDomainCookie('nt', $now_url, 3600 * 24 + time());
+        }
+
+        if (defined('KEEP_PARAMS') && KEEP_PARAMS === 'ON' && !empty($_GET) && $fp_url !== '') {
+            $params   = http_build_query($_GET);
+            $urlParts = parse_url($fp_url);
+            if (isset($urlParts['query'])) {
+                $fp_url .= '&' . $params;
+            } else {
+                $fp_url .= '?' . $params;
+            }
+        }
+
+        return ['url' => (string) $fp_url, 'now_url' => (int) $now_url];
+    }
+
+    /**
+     * 真实页 / 安全页兜底 URL（DB_FP 首项，否则 DB_ZP）
+     */
+    public static function fallbackUrl()
+    {
+        $all = DB_FP;
+        if (is_array($all)) {
+            foreach ($all as $u) {
+                if (trim((string) $u) !== '') {
+                    return (string) $u;
+                }
+            }
+        } elseif (is_string($all) && trim($all) !== '') {
+            return $all;
+        }
+        return defined('DB_ZP') ? (string) DB_ZP : '';
+    }
+}