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@@ -0,0 +1,326 @@
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+<?php
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+declare (strict_types=1);
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+
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+namespace app\service;
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+
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+class IpWhiteListService
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+{
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+ /**
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+ * 验证IP是否在白名单中
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+ *
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+ * @param string $clientIp 客户端IP
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+ * @param string $whiteListIp 白名单IP配置
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+ * @return bool
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+ */
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+ public static function checkIpWhiteList(string $clientIp, string $whiteListIp): bool
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+ {
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+ // 如果白名单为空,表示不限制IP
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+ if (empty($whiteListIp)) {
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+ return true;
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+ }
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+
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+ // 解析白名单IP配置
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+ $whiteList = self::parseWhiteListIp($whiteListIp);
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+
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+ foreach ($whiteList as $allowedIp) {
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+ if (self::matchIp($clientIp, $allowedIp)) {
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+ return true;
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+ }
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+ }
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+
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+ return false;
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+ }
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+
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+ /**
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+ * 解析白名单IP配置
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+ * 支持格式:
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+ * - 单个IP: 192.168.1.1
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+ * - IP段: 192.168.1.0/24
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+ * - IP范围: 192.168.1.1-192.168.1.100
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+ * - 多个配置用逗号分隔: 192.168.1.1,10.0.0.0/8,172.16.0.1-172.16.0.100
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+ *
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+ * @param string $whiteListIp
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+ * @return array
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+ */
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+ public static function parseWhiteListIp(string $whiteListIp): array
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+ {
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+ $whiteList = [];
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+ $items = array_filter(array_map('trim', explode(',', $whiteListIp)));
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+
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+ foreach ($items as $item) {
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+ if (!empty($item)) {
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+ $whiteList[] = $item;
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+ }
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+ }
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+
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+ return $whiteList;
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+ }
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+
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+ /**
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+ * 匹配IP地址
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+ *
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+ * @param string $clientIp 客户端IP
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+ * @param string $allowedIp 允许的IP配置
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+ * @return bool
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+ */
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+ private static function matchIp(string $clientIp, string $allowedIp): bool
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+ {
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+ // 精确匹配
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+ if ($clientIp === $allowedIp) {
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+ return true;
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+ }
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+
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+ // CIDR格式匹配 (例: 192.168.1.0/24)
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+ if (strpos($allowedIp, '/') !== false) {
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+ return self::matchCidr($clientIp, $allowedIp);
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+ }
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+
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+ // IP范围匹配 (例: 192.168.1.1-192.168.1.100)
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+ if (strpos($allowedIp, '-') !== false) {
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+ return self::matchRange($clientIp, $allowedIp);
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+ }
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+
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+ // 通配符匹配 (例: 192.168.1.*)
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+ if (strpos($allowedIp, '*') !== false) {
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+ return self::matchWildcard($clientIp, $allowedIp);
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+ }
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+
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+ return false;
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+ }
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+
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+ /**
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+ * CIDR格式IP匹配
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+ *
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+ * @param string $clientIp
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+ * @param string $cidr
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+ * @return bool
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+ */
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+ private static function matchCidr(string $clientIp, string $cidr): bool
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+ {
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+ list($subnet, $mask) = explode('/', $cidr);
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+
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+ if (!filter_var($subnet, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) ||
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+ !filter_var($clientIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
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+ return false;
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+ }
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+
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+ $mask = intval($mask);
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+ if ($mask < 0 || $mask > 32) {
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+ return false;
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+ }
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+
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+ $clientIpLong = ip2long($clientIp);
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+ $subnetLong = ip2long($subnet);
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+ $maskLong = (-1 << (32 - $mask));
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+
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+ return ($clientIpLong & $maskLong) === ($subnetLong & $maskLong);
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+ }
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+
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+ /**
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+ * IP范围匹配
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+ *
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+ * @param string $clientIp
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+ * @param string $range
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+ * @return bool
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+ */
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+ private static function matchRange(string $clientIp, string $range): bool
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+ {
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+ list($startIp, $endIp) = explode('-', $range, 2);
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+ $startIp = trim($startIp);
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+ $endIp = trim($endIp);
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+
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+ if (!filter_var($startIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) ||
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+ !filter_var($endIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) ||
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+ !filter_var($clientIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
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+ return false;
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+ }
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+
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+ $clientIpLong = ip2long($clientIp);
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+ $startIpLong = ip2long($startIp);
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+ $endIpLong = ip2long($endIp);
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+
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+ return $clientIpLong >= $startIpLong && $clientIpLong <= $endIpLong;
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+ }
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+
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+ /**
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+ * 通配符匹配
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+ *
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+ * @param string $clientIp
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+ * @param string $pattern
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+ * @return bool
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+ */
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+ private static function matchWildcard(string $clientIp, string $pattern): bool
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+ {
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+ $pattern = str_replace('.', '\.', $pattern);
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+ $pattern = str_replace('*', '[0-9]+', $pattern);
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+ $pattern = '/^' . $pattern . '$/';
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+
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+ return preg_match($pattern, $clientIp) === 1;
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+ }
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+
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+ /**
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+ * 获取客户端真实IP
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+ *
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+ * @return string
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+ */
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+ public static function getRealIp(): string
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+ {
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+ $headers = [
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+ 'HTTP_X_FORWARDED_FOR',
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+ 'HTTP_X_REAL_IP',
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+ 'HTTP_CLIENT_IP',
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+ 'HTTP_CF_CONNECTING_IP',
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+ 'HTTP_X_CLUSTER_CLIENT_IP',
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+ 'REMOTE_ADDR'
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+ ];
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+
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+ foreach ($headers as $header) {
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+ if (!empty($_SERVER[$header])) {
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+ $ips = explode(',', $_SERVER[$header]);
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+ $ip = trim($ips[0]);
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+
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+ if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
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+ return $ip;
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+ }
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+ }
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+ }
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+
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+ return $_SERVER['REMOTE_ADDR'] ?? '0.0.0.0';
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+ }
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+
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+ /**
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+ * 验证IP白名单格式
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+ *
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+ * @param string $whiteListIp
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+ * @return array [bool $isValid, string $message, array $parsedList]
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+ */
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+ public static function validateWhiteListFormat(string $whiteListIp): array
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+ {
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+ if (empty($whiteListIp)) {
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+ return [true, '白名单为空,表示不限制IP访问', []];
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+ }
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+
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+ $items = self::parseWhiteListIp($whiteListIp);
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+ $validItems = [];
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+ $errors = [];
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+
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+ foreach ($items as $item) {
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+ $validation = self::validateSingleIpFormat($item);
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+ if ($validation['valid']) {
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+ $validItems[] = [
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+ 'input' => $item,
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+ 'type' => $validation['type'],
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+ 'description' => $validation['description']
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+ ];
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+ } else {
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+ $errors[] = "'{$item}': " . $validation['message'];
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+ }
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+ }
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+
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+ $isValid = empty($errors);
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+ $message = $isValid ? '白名单格式正确' : '白名单格式错误: ' . implode(', ', $errors);
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+
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+ return [$isValid, $message, $validItems];
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+ }
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+
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+ /**
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+ * 验证单个IP配置格式
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+ *
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+ * @param string $ipConfig
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+ * @return array
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+ */
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+ private static function validateSingleIpFormat(string $ipConfig): array
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+ {
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+ // 精确IP
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+ if (filter_var($ipConfig, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
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+ return [
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+ 'valid' => true,
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+ 'type' => 'exact',
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+ 'description' => "精确IP: {$ipConfig}"
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+ ];
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+ }
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+
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+ // CIDR格式
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+ if (strpos($ipConfig, '/') !== false) {
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+ list($subnet, $mask) = explode('/', $ipConfig);
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+ if (filter_var($subnet, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) &&
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+ is_numeric($mask) && $mask >= 0 && $mask <= 32) {
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+ return [
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+ 'valid' => true,
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+ 'type' => 'cidr',
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+ 'description' => "CIDR网段: {$ipConfig}"
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+ ];
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+ }
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+ }
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+
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+ // IP范围
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+ if (strpos($ipConfig, '-') !== false) {
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+ list($startIp, $endIp) = explode('-', $ipConfig, 2);
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+ $startIp = trim($startIp);
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+ $endIp = trim($endIp);
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+
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+ if (filter_var($startIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) &&
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+ filter_var($endIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
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+ return [
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+ 'valid' => true,
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+ 'type' => 'range',
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+ 'description' => "IP范围: {$startIp} 到 {$endIp}"
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+ ];
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+ }
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+ }
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+
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+ // 通配符
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+ if (strpos($ipConfig, '*') !== false) {
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+ $parts = explode('.', $ipConfig);
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+ if (count($parts) === 4) {
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+ $valid = true;
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+ foreach ($parts as $part) {
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+ if ($part !== '*' && (!is_numeric($part) || $part < 0 || $part > 255)) {
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+ $valid = false;
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+ break;
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+ }
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+ }
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+ if ($valid) {
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+ return [
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+ 'valid' => true,
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+ 'type' => 'wildcard',
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+ 'description' => "通配符IP: {$ipConfig}"
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+ ];
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+ }
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+ }
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+ }
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+
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+ return [
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+ 'valid' => false,
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+ 'message' => '不支持的IP格式'
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+ ];
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+ }
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+
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+ /**
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+ * 获取IP地理位置信息(简单实现)
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+ *
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+ * @param string $ip
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+ * @return array
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+ */
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+ public static function getIpInfo(string $ip): array
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+ {
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+ // 内网IP检测
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+ if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) {
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+ return [
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+ 'ip' => $ip,
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+ 'type' => 'private',
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+ 'location' => '内网IP',
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+ 'isp' => '内网'
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+ ];
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+ }
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+
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+ // 这里可以集成第三方IP地理位置服务
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+ // 如:百度、腾讯、阿里云等IP查询API
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+ return [
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+ 'ip' => $ip,
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+ 'type' => 'public',
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+ 'location' => '未知',
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+ 'isp' => '未知'
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+ ];
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+ }
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+}
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