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116 lines
2.1 KiB
116 lines
2.1 KiB
package main
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import (
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"errors"
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"fmt"
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"io"
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"net/http"
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"os"
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"path"
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"regexp"
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"strings"
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"code.google.com/p/go-uuid/uuid"
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"github.com/zenazn/goji/web"
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)
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type UploadRequest struct {
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src io.Reader
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filename string
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expiry int
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randomBarename bool
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}
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type Upload struct {
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Filename string
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Size int64
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Expiry int
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}
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func uploadPostHandler(c web.C, w http.ResponseWriter, r *http.Request) {
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upReq := UploadRequest{}
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file, headers, err := r.FormFile("file")
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if err != nil {
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fmt.Fprintf(w, err.Error())
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return
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}
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defer file.Close()
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upReq.src = file
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upReq.filename = headers.Filename
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upload, err := processUpload(upReq)
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if err != nil {
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fmt.Fprintf(w, "Failed to upload: %v", err)
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return
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}
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http.Redirect(w, r, "/"+upload.Filename, 301)
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}
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func uploadPutHandler(c web.C, w http.ResponseWriter, r *http.Request) {
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upReq := UploadRequest{}
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defer r.Body.Close()
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upReq.src = r.Body
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upload, err := processUpload(upReq)
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if err != nil {
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fmt.Fprintf(w, "Failed to upload")
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return
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}
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fmt.Fprintf(w, "File %s uploaded successfully.", upload.Filename)
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}
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func processUpload(upReq UploadRequest) (upload Upload, err error) {
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barename, extension := barePlusExt(upReq.filename)
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if upReq.randomBarename || len(barename) == 0 {
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barename = generateBarename()
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}
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if len(extension) == 0 {
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extension = "ext"
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}
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upload.Filename = strings.Join([]string{barename, extension}, ".")
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dst, err := os.Create(path.Join("files/", upload.Filename))
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if err != nil {
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return
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}
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defer dst.Close()
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bytes, err := io.Copy(dst, upReq.src)
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if err != nil {
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return
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} else if bytes == 0 {
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err = errors.New("Empty file")
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return
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}
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upload.Size = bytes
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return
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}
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func generateBarename() string {
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return uuid.New()[:8]
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}
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func barePlusExt(filename string) (barename, extension string) {
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re := regexp.MustCompile(`[^A-Za-z0-9\-]`)
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filename = strings.TrimSpace(filename)
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filename = strings.ToLower(filename)
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extension = path.Ext(filename)
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barename = filename[:len(filename)-len(extension)]
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extension = re.ReplaceAllString(extension, "")
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barename = re.ReplaceAllString(barename, "")
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return
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}
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