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Test if LFS object is accessible (#16865) (#16904)

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* Test if object is accessible.

* Added more logging.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
This commit is contained in:
6543 2021-08-31 17:58:39 +02:00 committed by GitHub
parent 3ac1f35349
commit cbe3ca5d0b
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 60 additions and 19 deletions
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14
integrations/api_repo_lfs_test.go
View file

@ -254,6 +254,10 @@ func TestAPILFSBatch(t *testing.T) {
assert.NoError(t, err)
assert.True(t, exist)
repo2 := createLFSTestRepository(t, "batch2")
content := []byte("dummy0")
storeObjectInRepo(t, repo2.ID, &content)
meta, err := repo.GetLFSMetaObjectByOid(p.Oid)
assert.Nil(t, meta)
assert.Equal(t, models.ErrLFSObjectNotExist, err)
@ -359,14 +363,20 @@ func TestAPILFSUpload(t *testing.T) {
assert.Nil(t, meta)
assert.Equal(t, models.ErrLFSObjectNotExist, err)
req := newRequest(t, p, "")
t.Run("InvalidAccess", func(t *testing.T) {
req := newRequest(t, p, "invalid")
session.MakeRequest(t, req, http.StatusUnprocessableEntity)
})
t.Run("ValidAccess", func(t *testing.T) {
req := newRequest(t, p, "dummy5")
session.MakeRequest(t, req, http.StatusOK)
meta, err = repo.GetLFSMetaObjectByOid(p.Oid)
assert.NoError(t, err)
assert.NotNil(t, meta)
})
})
t.Run("MetaAlreadyExists", func(t *testing.T) {
defer PrintCurrentTest(t)()

59
services/lfs/server.go
View file

@ -5,7 +5,9 @@
package lfs
import (
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"errors"
"fmt"
"io"
@ -213,14 +215,22 @@ func BatchHandler(ctx *context.Context) {
}
}
if exists {
if meta == nil {
if exists && meta == nil {
accessible, err := models.LFSObjectAccessible(ctx.User, p.Oid)
if err != nil {
log.Error("Unable to check if LFS MetaObject [%s] is accessible. Error: %v", p.Oid, err)
writeStatus(ctx, http.StatusInternalServerError)
return
}
if accessible {
_, err := models.NewLFSMetaObject(&models.LFSMetaObject{Pointer: p, RepositoryID: repository.ID})
if err != nil {
log.Error("Unable to create LFS MetaObject [%s] for %s/%s. Error: %v", p.Oid, rc.User, rc.Repo, err)
writeStatus(ctx, http.StatusInternalServerError)
return
}
} else {
exists = false
}
}
@ -270,29 +280,50 @@ func UploadHandler(ctx *context.Context) {
return
}
meta, err := models.NewLFSMetaObject(&models.LFSMetaObject{Pointer: p, RepositoryID: repository.ID})
if err != nil {
log.Error("Unable to create LFS MetaObject [%s] for %s/%s. Error: %v", p.Oid, rc.User, rc.Repo, err)
writeStatus(ctx, http.StatusInternalServerError)
return
}
contentStore := lfs_module.NewContentStore()
exists, err := contentStore.Exists(p)
if err != nil {
log.Error("Unable to check if LFS OID[%s] exist. Error: %v", p.Oid, err)
writeStatus(ctx, http.StatusInternalServerError)
return
}
if meta.Existing || exists {
ctx.Resp.WriteHeader(http.StatusOK)
return
uploadOrVerify := func() error {
if exists {
accessible, err := models.LFSObjectAccessible(ctx.User, p.Oid)
if err != nil {
log.Error("Unable to check if LFS MetaObject [%s] is accessible. Error: %v", p.Oid, err)
return err
}
if !accessible {
// The file exists but the user has no access to it.
// The upload gets verified by hashing and size comparison to prove access to it.
hash := sha256.New()
written, err := io.Copy(hash, ctx.Req.Body)
if err != nil {
log.Error("Error creating hash. Error: %v", err)
return err
}
if written != p.Size {
return lfs_module.ErrSizeMismatch
}
if hex.EncodeToString(hash.Sum(nil)) != p.Oid {
return lfs_module.ErrHashMismatch
}
}
} else if err := contentStore.Put(p, ctx.Req.Body); err != nil {
log.Error("Error putting LFS MetaObject [%s] into content store. Error: %v", p.Oid, err)
return err
}
_, err := models.NewLFSMetaObject(&models.LFSMetaObject{Pointer: p, RepositoryID: repository.ID})
return err
}
defer ctx.Req.Body.Close()
if err := contentStore.Put(meta.Pointer, ctx.Req.Body); err != nil {
if err := uploadOrVerify(); err != nil {
if errors.Is(err, lfs_module.ErrSizeMismatch) || errors.Is(err, lfs_module.ErrHashMismatch) {
log.Error("Upload does not match LFS MetaObject [%s]. Error: %v", p.Oid, err)
writeStatusMessage(ctx, http.StatusUnprocessableEntity, err.Error())
} else {
writeStatus(ctx, http.StatusInternalServerError)