refactor: rebuild the query section

backend/getIP.php

@@ -1,17 +0,0 @@
-<?php
-
-function getClientIp() {
-    if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
-        $ip = $_SERVER['HTTP_CLIENT_IP'];
-    } elseif (!empty($_SERVER['HTTP_X_REAL_IP'])) {
-        $ip = $_SERVER['HTTP_X_REAL_IP'];
-    } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
-        $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
-        $ip = preg_replace('/,.*/', '', $ip);
-    } else {
-        $ip = $_SERVER['REMOTE_ADDR'];
-    }
-    return preg_replace('/^::ffff:/', '', $ip);
-}
-
-?>

backend/getInfo.php

@@ -2,7 +2,7 @@
 
 include("getCountry.php");
 
-function getIPInfo($ip, $is_cli) {
+function getIPInfo($ip) {
     $specialIpInfo = getSpecialIpInfo($ip);
     if (is_string($specialIpInfo)) {
         $info['ip'] = $ip;
@@ -15,7 +15,6 @@ function getIPInfo($ip, $is_cli) {
         $info['isp'] = $specialIpInfo;
     } else {
         $rawIspInfo = getIspInfo($ip);
-
         $info['ip'] = $ip;
         $info['as'] = getAS($rawIspInfo);
         $info['city'] = $rawIspInfo['city'];
@@ -27,7 +26,7 @@ function getIPInfo($ip, $is_cli) {
         $info['country'] .= "（".get_country($rawIspInfo['country'])['cn']."）";
     }
 
-    if ($is_cli == true) {
+    if ($_GET['cli'] == "true") {
         $cli = "IP: ".$info['ip'].PHP_EOL;
         $cli = $cli."AS: ".$info['as'].PHP_EOL;
         $cli = $cli."City: ".$info['city'].PHP_EOL;
@@ -39,6 +38,7 @@ function getIPInfo($ip, $is_cli) {
         return $cli;
     }
 
+    header('Content-Type: application/json; charset=utf-8');
     return json_encode($info);
 }
 

backend/queryInfo.php

@@ -1,30 +1,14 @@
 <?php
 
 include("getInfo.php");
-include("getIP.php");
-
-function sendHeaders() {
-    header('Content-Type: application/json; charset=utf-8');
-    header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0, s-maxage=0');
-    header('Cache-Control: post-check=0, pre-check=0', false);
-    header('Pragma: no-cache');
-}
 
 $ip = $_GET['ip'];
-if ($ip) {
-    if (!filter_var($ip, \FILTER_VALIDATE_IP)) {
+
+if (!filter_var($ip, \FILTER_VALIDATE_IP)) {
     echo "Illegal IP format".PHP_EOL;
     exit;
-    }
-} else {
-    $ip = getClientIp();
 }
 
-if ($_GET['cli'] == "true") {
-    echo getIPInfo($ip, true);
-} else {
-    sendHeaders();
-    echo getIPInfo($ip, false);
-}
+echo getIPInfo($ip);
 
 ?>