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fileserver.go
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package main
import (
"flag"
"fmt"
"net/url"
"os"
"path"
"strings"
"github.com/gin-gonic/gin"
)
var (
port string
username string
password string
dir string
head = `<html>
<form action="/newdir/" method="POST">
<input type="text" name="dirname">
<input type="submit" value="新建目录">
</form>
<form action="/" enctype="multipart/form-data" method="POST">
<input type="file" name="files" multiple="multiple" />
<input type="submit" value="上传" />
</form>
<script>
window.onload = function() {
var prelist = document.getElementsByTagName("pre");
if (prelist.length > 0) {
var pre = prelist[0];
var alist = pre.getElementsByTagName("a");
if (alist.length > 0) {
for (var i = 0; i < alist.length; i++) {
var a = alist[i];
var input = document.createElement("input");
input.type = "checkbox";
input.name = "list[]";
input.value = a.text;
pre.insertBefore(input, a);
}
var input = document.createElement("input");
input.type = "submit";
input.value = "删除选中";
pre.parentNode.append(input);
}
}
}
</script>
<form action="/del/" method="POST">
`
errFmt = `<font color="red">%s</font><br />
<input type="button" value="返回" onclick="history.back()">`
)
type Files struct {
List []string `form:"list[]"`
}
func init() {
flag.StringVar(&port, "port", "80", "http port")
flag.StringVar(&username, "user", "", "username")
flag.StringVar(&password, "pass", "", "password")
flag.StringVar(&dir, "dir", "./", "file dir")
flag.Parse()
}
func uploadFile(c *gin.Context) {
form, err := c.MultipartForm()
if err != nil {
c.Header("Content-Type", "text/html; charset=utf-8")
c.String(200, fmt.Sprintf(errFmt, "Error: "+err.Error()))
return
}
p := getPath(c.GetHeader("referer"))
files := form.File["files"]
for _, file := range files {
err = c.SaveUploadedFile(file, path.Join(dir, p, path.Clean("/"+file.Filename)))
if err != nil {
c.Header("Content-Type", "text/html; charset=utf-8")
c.String(200, fmt.Sprintf(errFmt, file.Filename+" 上传失败<br />Error: "+err.Error()))
return
}
}
c.Redirect(302, p)
}
func delFile(c *gin.Context) {
var files Files
err := c.ShouldBind(&files)
if err != nil {
c.Header("Content-Type", "text/html; charset=utf-8")
c.String(200, fmt.Sprintf(errFmt, "Error: "+err.Error()))
return
}
p := getPath(c.GetHeader("referer"))
for _, file := range files.List {
err = os.RemoveAll(path.Join(dir, p, path.Clean("/"+file)))
if err != nil {
c.Header("Content-Type", "text/html; charset=utf-8")
c.String(200, fmt.Sprintf(errFmt, file+" 删除失败<br />Error: "+err.Error()))
return
}
}
c.Redirect(302, p)
}
func newDir(c *gin.Context) {
p := getPath(c.GetHeader("referer"))
dirname := c.PostForm("dirname")
if dirname != "" {
err := os.MkdirAll(path.Join(dir, p, path.Clean("/"+dirname)), os.ModeDir)
if err != nil {
c.Header("Content-Type", "text/html; charset=utf-8")
c.String(200, fmt.Sprintf(errFmt, "Error: "+err.Error()))
return
}
}
c.Redirect(302, p)
}
func getPath(referer string) string {
var p = "/"
u, err := url.ParseRequestURI(referer)
if err == nil {
// remove ../
p = path.Clean("/" + u.Path)
if p != "/" {
p += "/"
}
}
return p
}
func writeHead(c *gin.Context) {
if strings.HasSuffix(c.Request.URL.Path, "/") {
c.Writer.WriteString(head)
}
}
func main() {
gin.SetMode(gin.ReleaseMode)
r := gin.Default()
var authGroup *gin.RouterGroup
if username != "" {
authGroup = r.Group("/", gin.BasicAuth(gin.Accounts{
username: password,
}))
} else {
authGroup = r.Group("/")
}
getGroup := authGroup.Group("/", writeHead)
getGroup.StaticFS("/", gin.Dir(dir, true))
authGroup.POST("/", uploadFile)
authGroup.POST("/del/", delFile)
authGroup.POST("/newdir/", newDir)
err := r.Run(":" + port)
if err != nil {
fmt.Println(err)
}
}