mirror of
https://github.com/IceWhaleTech/CasaOS.git
synced 2025-06-16 05:55:33 +00:00
298 lines
7.7 KiB
Go
298 lines
7.7 KiB
Go
package service
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import (
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"context"
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"crypto/md5"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net"
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"os"
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"strconv"
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"time"
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"github.com/IceWhaleTech/CasaOS/model"
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"github.com/IceWhaleTech/CasaOS/pkg/config"
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"github.com/IceWhaleTech/CasaOS/pkg/quic_helper"
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"github.com/IceWhaleTech/CasaOS/pkg/utils/file"
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model2 "github.com/IceWhaleTech/CasaOS/service/model"
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"github.com/IceWhaleTech/CasaOS/types"
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"github.com/lucas-clemente/quic-go"
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uuid "github.com/satori/go.uuid"
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)
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var UDPConn *net.UDPConn
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var PeopleMap map[string]quic.Stream
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var Message chan model.MessageModel
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var UDPAddressMap map[string]string
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func Dial(msg model.MessageModel, server bool) (m model.MessageModel, err error) {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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Message = make(chan model.MessageModel)
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srcAddr := &net.UDPAddr{
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IP: net.IPv4zero, Port: 9904} //注意端口必须固定
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addr := UDPAddressMap[msg.To]
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ticker := msg.To
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if server {
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addr = config.ServerInfo.Handshake + ":9527"
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ticker = "bench"
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}
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dstAddr, err := net.ResolveUDPAddr("udp", addr)
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//DialTCP在网络协议net上连接本地地址laddr和远端地址raddr。net必须是"udp"、"udp4"、"udp6"；如果laddr不是nil，将使用它作为本地地址，否则自动选择一个本地地址。
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//(conn)UDPConn代表一个UDP网络连接，实现了Conn和PacketConn接口
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session, err := quic.DialContext(ctx, UDPConn, dstAddr, srcAddr.String(), quic_helper.GetClientTlsConfig(ticker), quic_helper.GetQUICConfig())
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if err != nil {
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go MyService.Casa().PushConnectionStatus(m.UUId, err.Error(), m.From, m.To, m.Type)
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return m, err
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}
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stream, err := session.OpenStreamSync(ctx)
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if err != nil {
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go MyService.Casa().PushConnectionStatus(m.UUId, err.Error(), m.From, m.To, m.Type)
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session.CloseWithError(1, err.Error())
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return m, err
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}
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SayHello(stream, msg.To)
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SendData(stream, msg)
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go ReadContent(stream)
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result := <-Message
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stream.Close()
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go MyService.Casa().PushConnectionStatus(m.UUId, "OK", m.From, m.To, m.Type)
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return result, nil
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}
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func SayHello(stream quic.Stream, to string) {
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msg := model.MessageModel{}
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msg.Type = types.PERSONHELLO
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msg.Data = "hello"
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msg.To = to
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msg.From = config.ServerInfo.Token
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msg.UUId = uuid.NewV4().String()
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SendData(stream, msg)
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}
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//发送数据
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func SendData(stream quic.Stream, m model.MessageModel) {
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b, _ := json.Marshal(m)
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prefixLength := file.PrefixLength(len(b))
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data := append(prefixLength, b...)
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stream.Write(data)
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}
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var Summary map[string]model.FileSummaryModel
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//读取数据
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func ReadContent(stream quic.Stream) {
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for {
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prefixByte := make([]byte, 6)
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_, err := io.ReadFull(stream, prefixByte)
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if err != nil {
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fmt.Println(err)
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break
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}
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prefixLength, err := strconv.Atoi(string(prefixByte))
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if err != nil {
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fmt.Println(err)
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break
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}
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messageByte := make([]byte, prefixLength)
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_, err = io.ReadFull(stream, messageByte)
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if err != nil {
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fmt.Println(err)
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break
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}
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m := model.MessageModel{}
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err = json.Unmarshal(messageByte, &m)
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if err != nil {
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fmt.Println(err)
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break
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}
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if m.Type == types.PERSONDOWNLOAD {
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dataModelByte, _ := json.Marshal(m.Data)
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dataModel := model.TranFileModel{}
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err := json.Unmarshal(dataModelByte, &dataModel)
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if err != nil {
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fmt.Println(err)
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continue
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}
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dataLengthByte := make([]byte, 8)
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_, err = io.ReadFull(stream, dataLengthByte)
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if err != nil {
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fmt.Println(err)
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continue
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}
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dataLength, err := strconv.Atoi(string(dataLengthByte))
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if err != nil {
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fmt.Println(err)
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continue
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}
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dataByte := make([]byte, dataLength)
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_, err = io.ReadFull(stream, dataByte)
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if err != nil {
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fmt.Println(err)
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continue
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}
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sum := md5.Sum(dataByte)
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hash := hex.EncodeToString(sum[:])
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if dataModel.Hash != hash {
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fmt.Println("hash不匹配", hash, dataModel.Hash)
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continue
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}
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tempPath := config.AppInfo.RootPath + "/temp" + "/" + m.UUId
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file.IsNotExistMkDir(tempPath)
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filepath := tempPath + "/" + strconv.Itoa(dataModel.Index)
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tempFile, err := os.Stat(filepath)
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if os.IsNotExist(err) || tempFile.Size() == 0 {
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err = ioutil.WriteFile(filepath, dataByte, 0644)
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task := model2.PersionDownloadDBModel{}
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task.UUID = m.UUId
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task.Error = err.Error()
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task.State = types.DOWNLOADERROR
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MyService.Download().SetDownloadError(task)
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} else {
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if file.GetHashByPath(filepath) != dataModel.Hash {
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os.Remove(filepath)
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err = ioutil.WriteFile(filepath, dataByte, 0644)
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task := model2.PersionDownloadDBModel{}
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task.UUID = m.UUId
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task.Error = err.Error()
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task.State = types.DOWNLOADERROR
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MyService.Download().SetDownloadError(task)
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}
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}
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files, err := ioutil.ReadDir(tempPath)
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if err != nil {
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fmt.Println(err)
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continue
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}
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if len(files) >= dataModel.Length {
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summary := Summary[m.UUId]
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file.SpliceFiles(tempPath, config.FileSettingInfo.DownloadDir+"/"+summary.Name, dataModel.Length, 0)
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if file.GetHashByPath(config.FileSettingInfo.DownloadDir+"/"+summary.Name) == summary.Hash {
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file.RMDir(tempPath)
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task := model2.PersionDownloadDBModel{}
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task.UUID = m.UUId
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task.State = types.DOWNLOADFINISH
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MyService.Download().EditDownloadState(task)
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delete(Summary, m.UUId)
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} else {
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os.Remove(config.FileSettingInfo.DownloadDir + "/" + summary.Name)
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task := model2.PersionDownloadDBModel{}
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task.UUID = m.UUId
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task.State = types.DOWNLOADERROR
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MyService.Download().EditDownloadState(task)
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}
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break
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}
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} else if m.Type == types.PERSONSUMMARY {
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dataModel := model.FileSummaryModel{}
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dataModelByte, _ := json.Marshal(m.Data)
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err := json.Unmarshal(dataModelByte, &dataModel)
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fmt.Println(err)
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task := model2.PersionDownloadDBModel{}
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task.UUID = m.UUId
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task.Name = dataModel.Name
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task.Length = dataModel.Length
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task.Size = dataModel.Size
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task.State = types.DOWNLOADING
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task.BlockSize = dataModel.BlockSize
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task.Hash = dataModel.Hash
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task.Type = 0
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task.From = m.From
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if len(dataModel.Message) > 0 {
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task.State = types.DOWNLOADERROR
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task.Error = dataModel.Message
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}
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MyService.Download().SaveDownload(task)
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Summary[m.UUId] = dataModel
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} else if m.Type == types.PERSONCONNECTION {
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if len(m.Data.(string)) > 0 {
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UDPAddressMap[m.From] = m.Data.(string)
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} else {
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delete(UDPAddressMap, m.From)
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}
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mi := model2.FriendModel{}
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mi.Avatar = config.UserInfo.Avatar
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mi.Profile = config.UserInfo.Description
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mi.Name = config.UserInfo.NickName
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mi.Token = config.ServerInfo.Token
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msg := model.MessageModel{}
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msg.Type = types.PERSONADDFRIEND
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msg.Data = mi
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msg.To = m.From
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msg.From = config.ServerInfo.Token
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msg.UUId = m.UUId
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go Dial(msg, false)
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Message <- m
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break
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} else if m.Type == "get_ip" {
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if len(m.Data.(string)) == 0 {
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delete(UDPAddressMap, m.From)
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break
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}
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UDPAddressMap[m.From] = m.Data.(string)
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Message <- m
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break
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} else {
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Message <- m
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}
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}
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Message <- model.MessageModel{}
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}
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func SendIPToServer() {
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msg := model.MessageModel{}
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msg.Type = "hello"
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msg.Data = ""
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msg.From = config.ServerInfo.Token
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msg.To = config.ServerInfo.Token
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msg.UUId = uuid.NewV4().String()
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Dial(msg, true)
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}
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func LoopFriend() {
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list := MyService.Friend().GetFriendList()
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for i := 0; i < len(list); i++ {
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msg := model.MessageModel{}
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msg.Type = "get_ip"
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msg.Data = ""
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msg.From = config.ServerInfo.Token
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msg.To = list[i].Token
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msg.UUId = uuid.NewV4().String()
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Dial(msg, true)
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msg.Type = "hello"
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msg.Data = ""
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msg.From = config.ServerInfo.Token
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msg.To = list[i].Token
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msg.UUId = uuid.NewV4().String()
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if _, ok := UDPAddressMap[list[i].Token]; ok {
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go Dial(msg, false)
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}
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}
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}
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