113 lines
2.6 KiB
Go
113 lines
2.6 KiB
Go
package filemanager
|
|
|
|
import (
|
|
"io"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/hacdias/fileutils"
|
|
"github.com/mholt/archiver"
|
|
)
|
|
|
|
// downloadHandler creates an archive in one of the supported formats (zip, tar,
|
|
// tar.gz or tar.bz2) and sends it to be downloaded.
|
|
func downloadHandler(c *RequestContext, w http.ResponseWriter, r *http.Request) (int, error) {
|
|
query := r.URL.Query().Get("format")
|
|
|
|
// If the file isn't a directory, serve it using http.ServeFile. We display it
|
|
// inline if it is requested.
|
|
if !c.File.IsDir {
|
|
if r.URL.Query().Get("inline") == "true" {
|
|
w.Header().Set("Content-Disposition", "inline")
|
|
} else {
|
|
w.Header().Set("Content-Disposition", "attachment; filename="+c.File.Name)
|
|
}
|
|
|
|
http.ServeFile(w, r, c.File.Path)
|
|
return 0, nil
|
|
}
|
|
|
|
files := []string{}
|
|
names := strings.Split(r.URL.Query().Get("files"), ",")
|
|
|
|
// If there are files in the query, sanitize their names.
|
|
// Otherwise, just append the current path.
|
|
if len(names) != 0 {
|
|
for _, name := range names {
|
|
// Unescape the name.
|
|
name, err := url.QueryUnescape(name)
|
|
if err != nil {
|
|
return http.StatusInternalServerError, err
|
|
}
|
|
|
|
// Clean the slashes.
|
|
name = fileutils.SlashClean(name)
|
|
files = append(files, filepath.Join(c.File.Path, name))
|
|
}
|
|
} else {
|
|
files = append(files, c.File.Path)
|
|
}
|
|
|
|
// If the format is true, just set it to "zip".
|
|
if query == "true" || query == "" {
|
|
query = "zip"
|
|
}
|
|
|
|
var (
|
|
extension string
|
|
temp string
|
|
err error
|
|
tempfile string
|
|
)
|
|
|
|
// Create a temporary directory.
|
|
temp, err = ioutil.TempDir("", "")
|
|
if err != nil {
|
|
return http.StatusInternalServerError, err
|
|
}
|
|
defer os.RemoveAll(temp)
|
|
|
|
tempfile = filepath.Join(temp, "temp")
|
|
|
|
switch query {
|
|
case "zip":
|
|
extension, err = ".zip", archiver.Zip.Make(tempfile, files)
|
|
case "tar":
|
|
extension, err = ".tar", archiver.Tar.Make(tempfile, files)
|
|
case "targz":
|
|
extension, err = ".tar.gz", archiver.TarGz.Make(tempfile, files)
|
|
case "tarbz2":
|
|
extension, err = ".tar.bz2", archiver.TarBz2.Make(tempfile, files)
|
|
case "tarxz":
|
|
extension, err = ".tar.xz", archiver.TarXZ.Make(tempfile, files)
|
|
default:
|
|
return http.StatusNotImplemented, nil
|
|
}
|
|
|
|
if err != nil {
|
|
return http.StatusInternalServerError, err
|
|
}
|
|
|
|
// Defines the file name.
|
|
name := c.File.Name
|
|
if name == "." || name == "" {
|
|
name = "download"
|
|
}
|
|
name += extension
|
|
|
|
// Opens the file so it can be downloaded.
|
|
file, err := os.Open(temp + "/temp")
|
|
if err != nil {
|
|
return http.StatusInternalServerError, err
|
|
}
|
|
defer file.Close()
|
|
|
|
w.Header().Set("Content-Disposition", "attachment; filename="+name)
|
|
_, err = io.Copy(w, file)
|
|
return 0, err
|
|
}
|