From 0b04eca16af8de94077ba28bcb9f2ec9c586fff2 Mon Sep 17 00:00:00 2001
From: XOF <xofine@noreply.localhost>
Date: Wed, 17 Dec 2025 01:50:06 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=20main.go?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 main.go | 89 +++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 70 insertions(+), 19 deletions(-)

diff --git a/main.go b/main.go
index 0774ddd..384fc8a 100644
--- a/main.go
+++ b/main.go
@@ -3,7 +3,7 @@ package main
 import (
 	"crypto/md5"
 	"crypto/subtle"
-	"encoding/json"
+	"encoding/xml"
 	"fmt"
 	"html/template"
 	"io"
@@ -22,8 +22,7 @@ const (
 	downloadDir   = "./chrome_versions"
 	checkInterval = 24 * time.Hour
 	maxRetries    = 3
-	versionAPI    = "https://versionhistory.googleapis.com/v1/chrome/platforms/win64/channels/stable/versions"
-	chromeURL     = "https://dl.google.com/tag/s/appguid%3D%7B8A69D345-D564-463C-AFF1-A69D9E530F96%7D%26iid%3D%7B00000000-0000-0000-0000-000000000000%7D%26lang%3Dzh-CN%26browser%3D4%26usagestats%3D0%26appname%3DGoogle%2520Chrome%26needsadmin%3Dprefers%26ap%3Dx64-stable-statsdef_1%26installdataindex%3Dempty/chrome/install/ChromeStandaloneSetup64.exe"
+	updateXMLURL  = "https://tools.google.com/service/update2"
 )
 
 var (
@@ -39,12 +38,43 @@ type Version struct {
 	Time     time.Time
 }
 
-type ChromeVersion struct {
-	Version string `json:"version"`
+type UpdateCheck struct {
+	XMLName xml.Name `xml:"request"`
+	OS      struct {
+		Platform string `xml:"platform,attr"`
+		Arch     string `xml:"arch,attr"`
+	} `xml:"os"`
+	App struct {
+		AppID   string `xml:"appid,attr"`
+		Version string `xml:"version,attr"`
+		Lang    string `xml:"lang,attr"`
+		UpdateCheck struct{} `xml:"updatecheck"`
+	} `xml:"app"`
 }
 
-type ChromeVersionResponse struct {
-	Versions []ChromeVersion `json:"versions"`
+type UpdateResponse struct {
+	XMLName xml.Name `xml:"response"`
+	App     struct {
+		UpdateCheck struct {
+			Status string `xml:"status,attr"`
+			URLs   struct {
+				URL []struct {
+					Codebase string `xml:"codebase,attr"`
+				} `xml:"url"`
+			} `xml:"urls"`
+			Manifest struct {
+				Version  string `xml:"version,attr"`
+				Packages struct {
+					Package struct {
+						Name     string `xml:"name,attr"`
+						Required bool   `xml:"required,attr"`
+						Size     int64  `xml:"size,attr"`
+						Hash     string `xml:"hash_sha256,attr"`
+					} `xml:"package"`
+				} `xml:"packages"`
+			} `xml:"manifest"`
+		} `xml:"updatecheck"`
+	} `xml:"app"`
 }
 
 func init() {
@@ -87,33 +117,54 @@ func monitor() {
 	}
 }
 
-func getLatestVersion() (string, error) {
-	resp, err := http.Get(versionAPI)
+func getLatestVersionInfo() (version, downloadURL string, err error) {
+	reqBody := `<?xml version="1.0" encoding="UTF-8"?>
+<request protocol="3.0" version="1.3.23.9" shell_version="1.3.21.103" ismachine="0" sessionid="{3597644B-2952-4F92-AE55-D315F45F80A5}" installsource="ondemandcheckforupdate" requestid="{CD7523AD-A40D-49F4-AEEF-8C114B804658}" dedup="cr" domainjoined="0">
+  <hw sse="1" sse2="1" sse3="1" ssse3="1" sse41="1" sse42="1" avx="1" physmemory="16" />
+  <os platform="win" version="10.0.19045.0" sp="" arch="x64"/>
+  <app appid="{8A69D345-D564-463C-AFF1-A69D9E530F96}" version="" nextversion="" lang="zh-CN" brand="GCEU" client="" installage="1">
+    <updatecheck/>
+  </app>
+</request>`
+
+	resp, err := http.Post(updateXMLURL, "application/xml", strings.NewReader(reqBody))
 	if err != nil {
-		return "", err
+		return "", "", err
 	}
 	defer resp.Body.Close()
 
-	var versionResp ChromeVersionResponse
-	if err := json.NewDecoder(resp.Body).Decode(&versionResp); err != nil {
-		return "", err
+	body, _ := io.ReadAll(resp.Body)
+	log.Printf("Update response: %s", string(body))
+
+	var updateResp UpdateResponse
+	if err := xml.Unmarshal(body, &updateResp); err != nil {
+		return "", "", err
 	}
 
-	if len(versionResp.Versions) == 0 {
-		return "", fmt.Errorf("no versions found")
+	version = updateResp.App.UpdateCheck.Manifest.Version
+	if len(updateResp.App.UpdateCheck.URLs.URL) > 0 {
+		codebase := updateResp.App.UpdateCheck.URLs.URL[0].Codebase
+		packageName := updateResp.App.UpdateCheck.Manifest.Packages.Package.Name
+		downloadURL = codebase + packageName
 	}
 
-	return versionResp.Versions[0].Version, nil
+	return version, downloadURL, nil
 }
 
 func checkAndDownload() {
-	version, err := getLatestVersion()
+	version, downloadURL, err := getLatestVersionInfo()
 	if err != nil {
-		log.Printf("Failed to get version: %v", err)
+		log.Printf("Failed to get version info: %v", err)
 		return
 	}
 
 	log.Printf("Latest Chrome version: %s", version)
+	log.Printf("Download URL: %s", downloadURL)
+
+	if downloadURL == "" {
+		log.Println("No download URL found")
+		return
+	}
 
 	// 检查是否已存在该版本
 	files, _ := os.ReadDir(downloadDir)
@@ -128,7 +179,7 @@ func checkAndDownload() {
 	client := &http.Client{}
 
 	for i := 0; i < maxRetries; i++ {
-		resp, err := client.Get(chromeURL)
+		resp, err := client.Get(downloadURL)
 		if err != nil {
 			log.Printf("Attempt %d failed: %v", i+1, err)
 			time.Sleep(time.Duration(i+1) * 10 * time.Second)