96 lines
2.0 KiB
Go
96 lines
2.0 KiB
Go
package filemanager
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import (
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"os"
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"path/filepath"
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"strings"
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"github.com/mholt/archiver"
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)
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// downloadHandler creates an archive in one of the supported formats (zip, tar,
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// tar.gz or tar.bz2) and sends it to be downloaded.
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func downloadHandler(c *requestContext, w http.ResponseWriter, r *http.Request) (int, error) {
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query := r.URL.Query().Get("format")
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if !c.fi.IsDir {
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w.Header().Set("Content-Disposition", "attachment; filename="+c.fi.Name)
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http.ServeFile(w, r, c.fi.Path)
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return 0, nil
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}
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files := []string{}
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names := strings.Split(r.URL.Query().Get("files"), ",")
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if len(names) != 0 {
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for _, name := range names {
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name, err := url.QueryUnescape(name)
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if err != nil {
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return http.StatusInternalServerError, err
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}
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files = append(files, filepath.Join(c.fi.Path, name))
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}
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} else {
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files = append(files, c.fi.Path)
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}
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if query == "true" {
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query = "zip"
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}
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var (
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extension string
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temp string
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err error
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tempfile string
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)
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temp, err = ioutil.TempDir("", "")
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if err != nil {
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return http.StatusInternalServerError, err
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}
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defer os.RemoveAll(temp)
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tempfile = filepath.Join(temp, "temp")
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switch query {
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case "zip":
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extension, err = ".zip", archiver.Zip.Make(tempfile, files)
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case "tar":
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extension, err = ".tar", archiver.Tar.Make(tempfile, files)
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case "targz":
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extension, err = ".tar.gz", archiver.TarGz.Make(tempfile, files)
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case "tarbz2":
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extension, err = ".tar.bz2", archiver.TarBz2.Make(tempfile, files)
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case "tarxz":
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extension, err = ".tar.xz", archiver.TarXZ.Make(tempfile, files)
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default:
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return http.StatusNotImplemented, nil
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}
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if err != nil {
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return http.StatusInternalServerError, err
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}
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file, err := os.Open(temp + "/temp")
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if err != nil {
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return http.StatusInternalServerError, err
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}
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name := c.fi.Name
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if name == "." || name == "" {
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name = "download"
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}
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w.Header().Set("Content-Disposition", "attachment; filename="+name+extension)
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io.Copy(w, file)
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return 0, nil
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}
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