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// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2018 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repo
import (
"path"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/httpcache"
"code.gitea.io/gitea/modules/lfs"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/storage"
"code.gitea.io/gitea/routers/common"
)
// ServeBlobOrLFS download a git.Blob redirecting to LFS if necessary
func ServeBlobOrLFS(ctx *context.Context, blob *git.Blob, lastModified time.Time) error {
if httpcache.HandleGenericETagTimeCache(ctx.Req, ctx.Resp, `"`+blob.ID.String()+`"`, lastModified) {
return nil
}
dataRc, err := blob.DataAsync()
if err != nil {
return err
}
closed := false
defer func() {
if closed {
return
}
if err = dataRc.Close(); err != nil {
log.Error("ServeBlobOrLFS: Close: %v", err)
}
}()
pointer, _ := lfs.ReadPointer(dataRc)
if pointer.IsValid() {
meta, _ := models.GetLFSMetaObjectByOid(ctx.Repo.Repository.ID, pointer.Oid)
if meta == nil {
if err = dataRc.Close(); err != nil {
log.Error("ServeBlobOrLFS: Close: %v", err)
}
closed = true
return common.ServeBlob(ctx, blob, lastModified)
}
if httpcache.HandleGenericETagCache(ctx.Req, ctx.Resp, `"`+pointer.Oid+`"`) {
return nil
}
if setting.LFS.ServeDirect {
// If we have a signed url (S3, object storage), redirect to this directly.
u, err := storage.LFS.URL(pointer.RelativePath(), blob.Name())
if u != nil && err == nil {
ctx.Redirect(u.String())
return nil
}
}
lfsDataRc, err := lfs.ReadMetaObject(meta.Pointer)
if err != nil {
return err
}
defer func() {
if err = lfsDataRc.Close(); err != nil {
log.Error("ServeBlobOrLFS: Close: %v", err)
}
}()
return common.ServeData(ctx, ctx.Repo.TreePath, meta.Size, lfsDataRc)
}
if err = dataRc.Close(); err != nil {
log.Error("ServeBlobOrLFS: Close: %v", err)
}
closed = true
return common.ServeBlob(ctx, blob, lastModified)
}
func getBlobForEntry(ctx *context.Context) (blob *git.Blob, lastModified time.Time) {
entry, err := ctx.Repo.Commit.GetTreeEntryByPath(ctx.Repo.TreePath)
if err != nil {
if git.IsErrNotExist(err) {
ctx.NotFound("GetTreeEntryByPath", err)
} else {
ctx.ServerError("GetTreeEntryByPath", err)
}
return
}
if entry.IsDir() || entry.IsSubModule() {
ctx.NotFound("getBlobForEntry", nil)
return
}
var c *git.LastCommitCache
if setting.CacheService.LastCommit.Enabled && ctx.Repo.CommitsCount >= setting.CacheService.LastCommit.CommitsCount {
c = git.NewLastCommitCache(ctx.Repo.Repository.FullName(), ctx.Repo.GitRepo, setting.LastCommitCacheTTLSeconds, cache.GetCache())
}
info, _, err := git.Entries([]*git.TreeEntry{entry}).GetCommitsInfo(ctx, ctx.Repo.Commit, path.Dir("/" + ctx.Repo.TreePath)[1:], c)
if err != nil {
ctx.ServerError("GetCommitsInfo", err)
return
}
if len(info) == 1 {
// Not Modified
lastModified = info[0].Commit.Committer.When
}
blob = entry.Blob()
return
}
// SingleDownload download a file by repos path
func SingleDownload(ctx *context.Context) {
blob, lastModified := getBlobForEntry(ctx)
if blob == nil {
return
}
if err := common.ServeBlob(ctx, blob, lastModified); err != nil {
ctx.ServerError("ServeBlob", err)
}
}
// SingleDownloadOrLFS download a file by repos path redirecting to LFS if necessary
func SingleDownloadOrLFS(ctx *context.Context) {
blob, lastModified := getBlobForEntry(ctx)
if blob == nil {
return
}
if err := ServeBlobOrLFS(ctx, blob, lastModified); err != nil {
ctx.ServerError("ServeBlobOrLFS", err)
}
}
// DownloadByID download a file by sha1 ID
func DownloadByID(ctx *context.Context) {
blob, err := ctx.Repo.GitRepo.GetBlob(ctx.Params("sha"))
if err != nil {
if git.IsErrNotExist(err) {
ctx.NotFound("GetBlob", nil)
} else {
ctx.ServerError("GetBlob", err)
}
return
}
if err = common.ServeBlob(ctx, blob, time.Time{}); err != nil {
ctx.ServerError("ServeBlob", err)
}
}
// DownloadByIDOrLFS download a file by sha1 ID taking account of LFS
func DownloadByIDOrLFS(ctx *context.Context) {
blob, err := ctx.Repo.GitRepo.GetBlob(ctx.Params("sha"))
if err != nil {
if git.IsErrNotExist(err) {
ctx.NotFound("GetBlob", nil)
} else {
ctx.ServerError("GetBlob", err)
}
return
}
if err = ServeBlobOrLFS(ctx, blob, time.Time{}); err != nil {
ctx.ServerError("ServeBlob", err)
}
}
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