mirror of https://gitee.com/godoos/godoos.git
52 changed files with 1515 additions and 44 deletions
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// MIT License
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//
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// Copyright (c) 2024 godoos.com
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// Email: xpbb@qq.com
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// GitHub: github.com/phpk/godoos
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package localchat |
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import ( |
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"bytes" |
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"encoding/json" |
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"fmt" |
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"godo/libs" |
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"image" |
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"io" |
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"log" |
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"net" |
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"net/http" |
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"os" |
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"path/filepath" |
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"time" |
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) |
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func HandlerSendImg(w http.ResponseWriter, r *http.Request) { |
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var msg UdpMessage |
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decoder := json.NewDecoder(r.Body) |
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if err := decoder.Decode(&msg); err != nil { |
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http.Error(w, "Invalid request body", http.StatusBadRequest) |
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return |
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} |
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defer r.Body.Close() |
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hostname, err := os.Hostname() |
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if err != nil { |
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libs.ErrorMsg(w, "HandleMessage error") |
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return |
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} |
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msg.Hostname = hostname |
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msg.Time = time.Now() |
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msg.Type = "image" |
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toIp := msg.IP |
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basePath, err := libs.GetOsDir() |
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if err != nil { |
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log.Printf("GetOsDir error: %v", err) |
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return |
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} |
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paths, ok := msg.Message.([]string) |
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if !ok { |
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log.Printf("invalid message type") |
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return |
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} |
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for _, p := range paths { |
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filePath := filepath.Join(basePath, p) |
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// 处理多张图片
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if fileInfo, err := os.Stat(filePath); err == nil { |
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if !fileInfo.IsDir() { |
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if isImage(filePath) { // 检查是否为图片
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sendImage(filePath, toIp, msg) |
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} else { |
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log.Printf("文件 %s 不是图片", filePath) |
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} |
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} |
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} else { |
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continue |
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} |
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} |
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libs.SuccessMsg(w, nil, "图片发送成功") |
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} |
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func isImage(filePath string) bool { |
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data, err := os.ReadFile(filePath) |
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if err != nil { |
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return false |
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} |
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img, _, err := image.DecodeConfig(bytes.NewReader(data)) |
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return err == nil && img.Width > 0 && img.Height > 0 |
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} |
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func sendImage(filePath string, toIp string, message UdpMessage) { |
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// 打开文件
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file, err := os.Open(filePath) |
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if err != nil { |
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log.Fatalf("Failed to open file: %v", err) |
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} |
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defer file.Close() |
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// 获取文件大小
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fileInfo, err := file.Stat() |
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if err != nil { |
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log.Fatalf("Failed to get file info: %v", err) |
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} |
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fileSize := fileInfo.Size() |
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// 读取整个文件
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data := make([]byte, fileSize) |
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_, err = file.Read(data) |
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if err != nil { |
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log.Fatalf("Failed to read file: %v", err) |
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} |
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// 创建文件块
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chunk := FileChunk{ |
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Data: data, |
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Checksum: calculateChecksum(data), |
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Timestamp: time.Now(), |
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Filename: filepath.Base(file.Name()), |
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} |
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message.Message = chunk |
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// 将文件块转换为 JSON 格式
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data, err = json.Marshal(message) |
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if err != nil { |
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log.Fatalf("Failed to marshal chunk: %v", err) |
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} |
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// 发送文件块
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port := "56780" |
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addr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf("%s:%s", toIp, port)) |
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if err != nil { |
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log.Fatalf("Failed to resolve UDP address: %v", err) |
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} |
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conn, err := net.DialUDP("udp4", nil, addr) |
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if err != nil { |
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log.Fatalf("Failed to dial UDP address: %v", err) |
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} |
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defer conn.Close() |
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_, err = conn.Write(data) |
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if err != nil { |
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log.Printf("Failed to write data: %v", err) |
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} |
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fmt.Printf("发送图片 %s 到 %s 成功\n", filePath, toIp) |
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} |
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func ReceiveImg(msg UdpMessage) (string, error) { |
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chunk := msg.Message.(FileChunk) |
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// 验证校验和
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calculatedChecksum := calculateChecksum(chunk.Data) |
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if calculatedChecksum != chunk.Checksum { |
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fmt.Printf("Checksum mismatch for image from %s\n", msg.IP) |
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return "", fmt.Errorf("checksum mismatch") |
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} |
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baseDir, err := libs.GetOsDir() |
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if err != nil { |
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log.Printf("Failed to get OS directory: %v", err) |
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return "", err |
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} |
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// 创建接收文件的目录
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resPath := filepath.Join("C", "Users", "Reciv", time.Now().Format("2006-01-02")) |
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receiveDir := filepath.Join(baseDir, resPath) |
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if !libs.PathExists(receiveDir) { |
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err := os.MkdirAll(receiveDir, 0755) |
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if err != nil { |
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log.Printf("Failed to create receive directory: %v", err) |
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return "", err |
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} |
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} |
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// 确定文件路径
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filePath := filepath.Join(receiveDir, chunk.Filename) |
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// 如果文件不存在,则创建新文件
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if _, err := os.Stat(filePath); os.IsNotExist(err) { |
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file, err := os.Create(filePath) |
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if err != nil { |
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log.Printf("Failed to create file: %v", err) |
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return "", err |
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} |
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defer file.Close() |
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} |
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// 打开或追加到现有文件
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file, err := os.OpenFile(filePath, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0644) |
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if err != nil { |
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log.Printf("Failed to open file: %v", err) |
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return "", err |
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} |
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defer file.Close() |
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// 写入数据
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_, err = file.Write(chunk.Data) |
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if err != nil { |
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log.Printf("Failed to write data to file: %v", err) |
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return "", err |
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} |
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fmt.Printf("接收到图片 %s 从 %s 成功\n", filePath, msg.IP) |
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resFilePath := filepath.Join(resPath, chunk.Filename) |
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return resFilePath, nil |
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} |
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func HandleViewImg(w http.ResponseWriter, r *http.Request) { |
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img := r.URL.Query().Get("img") |
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if img == "" { |
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libs.ErrorMsg(w, "img is empty") |
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return |
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} |
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basePath, err := libs.GetOsDir() |
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if err != nil { |
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log.Printf("GetOsDir error: %v", err) |
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return |
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} |
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filePath := filepath.Join(basePath, img) |
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// 检查文件是否存在
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if _, err := os.Stat(filePath); os.IsNotExist(err) { |
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http.NotFound(w, r) |
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return |
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} |
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// 设置正确的 MIME 类型
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mimeType, err := GetMimeType(filePath) |
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if err != nil { |
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http.Error(w, "Failed to determine MIME type", http.StatusInternalServerError) |
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return |
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} |
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// 设置响应头
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w.Header().Set("Content-Type", mimeType) |
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// 读取文件并写入响应体
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file, err := os.Open(filePath) |
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if err != nil { |
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http.Error(w, "Failed to open file", http.StatusInternalServerError) |
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return |
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} |
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defer file.Close() |
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_, err = io.Copy(w, file) |
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if err != nil { |
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http.Error(w, "Failed to write file content", http.StatusInternalServerError) |
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return |
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} |
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} |
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func GetMimeType(filePath string) (string, error) { |
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f, err := os.Open(filePath) |
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if err != nil { |
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return "", err |
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} |
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defer f.Close() |
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// 读取前 512 字节以确定 MIME 类型
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buffer := make([]byte, 512) |
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_, err = f.Read(buffer) |
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if err != nil { |
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return "", err |
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} |
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mimeType := http.DetectContentType(buffer) |
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return mimeType, nil |
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} |
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