mirror of
https://github.com/kataras/iris.git
synced 2025-01-23 18:51:03 +01:00
117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
package main
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import (
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"crypto/md5"
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"fmt"
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"io"
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"mime/multipart"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/kataras/iris/v12"
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)
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func main() {
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app := newApp()
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// start the server at http://localhost:8080 with post limit at 32 MB.
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app.Listen(":8080", iris.WithPostMaxMemory(32<<20 /* same as 32 * iris.MB */))
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}
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func newApp() *iris.Application {
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app := iris.New()
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app.RegisterView(iris.HTML("./templates", ".html"))
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// Serve the upload_form.html to the client.
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app.Get("/upload", func(ctx iris.Context) {
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// create a token (optionally).
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now := time.Now().Unix()
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h := md5.New()
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io.WriteString(h, strconv.FormatInt(now, 10))
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token := fmt.Sprintf("%x", h.Sum(nil))
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// render the form with the token for any use you'd like.
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ctx.View("upload_form.html", token)
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})
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// Handle the post request from the upload_form.html to the server.
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app.Post("/upload", func(ctx iris.Context) {
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//
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// UploadFormFiles
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// uploads any number of incoming files ("multiple" property on the form input).
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//
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// second argument is optional,
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// it can be used to change a file's name based on the request,
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// at this example we will showcase how to use it
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// by prefixing the uploaded file with the current user's ip.
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ctx.UploadFormFiles("./uploads", beforeSave)
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})
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app.Post("/upload_manual", func(ctx iris.Context) {
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// Get the max post value size passed via iris.WithPostMaxMemory.
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maxSize := ctx.Application().ConfigurationReadOnly().GetPostMaxMemory()
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err := ctx.Request().ParseMultipartForm(maxSize)
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if err != nil {
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ctx.StopWithError(iris.StatusInternalServerError, err)
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return
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}
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form := ctx.Request().MultipartForm
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files := form.File["files[]"]
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failures := 0
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for _, file := range files {
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_, err = saveUploadedFile(file, "./uploads")
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if err != nil {
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failures++
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ctx.Writef("failed to upload: %s\n", file.Filename)
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}
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}
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ctx.Writef("%d files uploaded", len(files)-failures)
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})
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return app
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}
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func saveUploadedFile(fh *multipart.FileHeader, destDirectory string) (int64, error) {
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src, err := fh.Open()
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if err != nil {
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return 0, err
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}
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defer src.Close()
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out, err := os.OpenFile(filepath.Join(destDirectory, fh.Filename),
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os.O_WRONLY|os.O_CREATE, os.FileMode(0666))
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if err != nil {
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return 0, err
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}
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defer out.Close()
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return io.Copy(out, src)
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}
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func beforeSave(ctx iris.Context, file *multipart.FileHeader) {
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ip := ctx.RemoteAddr()
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// make sure you format the ip in a way
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// that can be used for a file name (simple case):
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ip = strings.Replace(ip, ".", "_", -1)
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ip = strings.Replace(ip, ":", "_", -1)
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// you can use the time.Now, to prefix or suffix the files
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// based on the current time as well, as an exercise.
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// i.e unixTime := time.Now().Unix()
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// prefix the Filename with the $IP-
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// no need for more actions, internal uploader will use this
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// name to save the file into the "./uploads" folder.
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if ip == "" {
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return
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}
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file.Filename = ip + "-" + file.Filename
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}
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