91 lines
2.6 KiB
Go
91 lines
2.6 KiB
Go
|
package upload
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"io/ioutil"
|
||
|
|
"net/http"
|
||
|
|
"net/url"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"gitlab.com/gitlab-org/gitlab-workhorse/internal/api"
|
||
|
|
"gitlab.com/gitlab-org/gitlab-workhorse/internal/filestore"
|
||
|
|
"gitlab.com/gitlab-org/gitlab-workhorse/internal/helper"
|
||
|
|
)
|
||
|
|
|
||
|
|
type PreAuthorizer interface {
|
||
|
|
PreAuthorizeHandler(next api.HandleFunc, suffix string) http.Handler
|
||
|
|
}
|
||
|
|
|
||
|
|
// Verifier allows to check an upload before sending it to rails
|
||
|
|
type Verifier interface {
|
||
|
|
// Verify can abort the upload returning an error
|
||
|
|
Verify(handler *filestore.FileHandler) error
|
||
|
|
}
|
||
|
|
|
||
|
|
// Preparer allows to customize BodyUploader configuration
|
||
|
|
type Preparer interface {
|
||
|
|
// Prepare converts api.Response into a *SaveFileOpts, it can optionally return an Verifier that will be
|
||
|
|
// invoked after the real upload, before the finalization with rails
|
||
|
|
Prepare(a *api.Response) (*filestore.SaveFileOpts, Verifier, error)
|
||
|
|
}
|
||
|
|
|
||
|
|
type DefaultPreparer struct{}
|
||
|
|
|
||
|
|
func (s *DefaultPreparer) Prepare(a *api.Response) (*filestore.SaveFileOpts, Verifier, error) {
|
||
|
|
opts, err := filestore.GetOpts(a)
|
||
|
|
return opts, nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
// BodyUploader is an http.Handler that perform a pre authorization call to rails before hijacking the request body and
|
||
|
|
// uploading it.
|
||
|
|
// Providing an Preparer allows to customize the upload process
|
||
|
|
func BodyUploader(rails PreAuthorizer, h http.Handler, p Preparer) http.Handler {
|
||
|
|
return rails.PreAuthorizeHandler(func(w http.ResponseWriter, r *http.Request, a *api.Response) {
|
||
|
|
opts, verifier, err := p.Prepare(a)
|
||
|
|
if err != nil {
|
||
|
|
helper.Fail500(w, r, fmt.Errorf("BodyUploader: preparation failed: %v", err))
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
fh, err := filestore.SaveFileFromReader(r.Context(), r.Body, r.ContentLength, opts)
|
||
|
|
if err != nil {
|
||
|
|
helper.Fail500(w, r, fmt.Errorf("BodyUploader: upload failed: %v", err))
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
if verifier != nil {
|
||
|
|
if err := verifier.Verify(fh); err != nil {
|
||
|
|
helper.Fail500(w, r, fmt.Errorf("BodyUploader: verification failed: %v", err))
|
||
|
|
return
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
data := url.Values{}
|
||
|
|
fields, err := fh.GitLabFinalizeFields("file")
|
||
|
|
if err != nil {
|
||
|
|
helper.Fail500(w, r, fmt.Errorf("BodyUploader: finalize fields failed: %v", err))
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
for k, v := range fields {
|
||
|
|
data.Set(k, v)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Hijack body
|
||
|
|
body := data.Encode()
|
||
|
|
r.Body = ioutil.NopCloser(strings.NewReader(body))
|
||
|
|
r.ContentLength = int64(len(body))
|
||
|
|
r.Header.Set("Content-Type", "application/x-www-form-urlencoded")
|
||
|
|
|
||
|
|
sft := SavedFileTracker{Request: r}
|
||
|
|
sft.Track("file", fh.LocalPath)
|
||
|
|
if err := sft.Finalize(r.Context()); err != nil {
|
||
|
|
helper.Fail500(w, r, fmt.Errorf("BodyUploader: finalize failed: %v", err))
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// And proxy the request
|
||
|
|
h.ServeHTTP(w, r)
|
||
|
|
}, "/authorize")
|
||
|
|
}
|