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