mirror of
https://github.com/FloatTech/ZeroBot-Plugin.git
synced 2025-12-19 22:00:11 +08:00
106 lines
2.6 KiB
Go
106 lines
2.6 KiB
Go
package file
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import (
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"crypto/md5"
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"encoding/hex"
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"errors"
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"io"
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"net/http"
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"os"
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"sync"
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"unsafe"
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reg "github.com/fumiama/go-registry"
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"github.com/sirupsen/logrus"
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)
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const (
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dataurl = "https://codechina.csdn.net/u011570312/ZeroBot-Plugin/-/raw/master/"
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)
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var (
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registry = reg.NewRegReader("reilia.eastasia.azurecontainer.io:32664", "fumiama")
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lzmu sync.Mutex
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)
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func GetLazyData(path string, isReturnDataBytes, isDataMustEqual bool) ([]byte, error) {
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var data []byte
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var resp *http.Response
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var filemd5 *[16]byte
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var ms string
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u := dataurl + path
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lzmu.Lock()
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logrus.Infoln("[file]检查懒加载文件:", path)
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err := registry.Connect()
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if err != nil {
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logrus.Errorln("[file]无法连接到md5验证服务器，请自行确保下载文件的正确性:", err)
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} else {
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ms, err = registry.Get(path)
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if err != nil || len(ms) != 16 {
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logrus.Errorln("[file]获取md5失败，请自行确保下载文件 %s 的正确性:", path, err)
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} else {
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filemd5 = (*[16]byte)(*(*unsafe.Pointer)(unsafe.Pointer(&ms)))
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logrus.Infoln("[file]从验证服务器获得文件md5:", hex.EncodeToString(filemd5[:]))
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}
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}
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_ = registry.Close()
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lzmu.Unlock()
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if IsExist(path) {
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data, err = os.ReadFile(path)
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if err != nil {
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return nil, err
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}
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if filemd5 != nil {
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if md5.Sum(data) == *filemd5 {
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logrus.Infoln("[file]文件md5匹配，文件已存在且为最新")
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goto ret
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} else if !isDataMustEqual {
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logrus.Warnln("[file]文件", path, "md5不匹配，但不主动更新")
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goto ret
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}
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logrus.Infoln("[file]文件md5不匹配，开始更新文件")
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} else {
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logrus.Warnln("[file]文件", path, "存在，已跳过md5检查")
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goto ret
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}
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}
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// 下载
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resp, err = http.Get(u)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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if resp.ContentLength <= 0 {
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return nil, errors.New("resp body len <= 0")
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}
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logrus.Printf("[file]从镜像下载数据%d字节...", resp.ContentLength)
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// 读取数据
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data, err = io.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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if len(data) <= 0 {
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return nil, errors.New("read body len <= 0")
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}
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if filemd5 != nil {
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if md5.Sum(data) == *filemd5 {
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logrus.Infoln("[file]文件下载完成，md5匹配，开始保存")
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} else {
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logrus.Errorln("[file]文件", path, "md5不匹配，下载失败")
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return nil, errors.New("file md5 mismatch")
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}
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} else {
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logrus.Warnln("[file]文件", path, "下载完成，已跳过md5检查，开始保存")
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}
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// 写入数据
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err = os.WriteFile(path, data, 0644)
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ret:
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if isReturnDataBytes {
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return data, err
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}
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return nil, err
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}
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