前端分流页功能

2026-06-05 04:22:29 +08:00
parent 8afe25a960
commit 34d76cce74
120 changed files with 10782 additions and 284 deletions
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\common\service;
+
+/**
+ * 分流链接 IP 防护：开启时校验访客 IP 国家是否在链接投放国家列表内
+ */
+class SplitIpProtectService
+{
+    /**
+     * 是否允许继续轮转跳转
+     *
+     * @param int|string $ipProtect       链接 ip_protect：0=关闭，1=开启
+     * @param string     $countriesStorage 链接 countries 字段（ISO2 逗号分隔）
+     * @param string     $clientIp        访客 IP
+     */
+    public static function isAllowed($ipProtect, string $countriesStorage, string $clientIp): bool
+    {
+        if ((int) $ipProtect !== 1) {
+            return true;
+        }
+
+        $allowed = self::parseAllowedCountries($countriesStorage);
+        if ($allowed === []) {
+            return false;
+        }
+
+        if (!SplitGeoIpService::isDatabaseAvailable()) {
+            return false;
+        }
+
+        $visitorCountry = SplitGeoIpService::getCountryIso2($clientIp);
+        if ($visitorCountry === null || $visitorCountry === '') {
+            return false;
+        }
+
+        return in_array($visitorCountry, $allowed, true);
+    }
+
+    /**
+     * @return array<int, string> 大写 ISO2 列表
+     */
+    public static function parseAllowedCountries(string $storage): array
+    {
+        if (trim($storage) === '') {
+            return [];
+        }
+        $result = [];
+        foreach (explode(',', $storage) as $code) {
+            $code = strtoupper(trim($code));
+            if ($code !== '' && !in_array($code, $result, true)) {
+                $result[] = $code;
+            }
+        }
+
+        return $result;
+    }
+}