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// Copyright 2020 The Gogs 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 lfs
import (
"encoding/json"
"io"
"io/ioutil"
"net/http"
"os"
"strconv"
"gopkg.in/macaron.v1"
log "unknwon.dev/clog/v2"
"gogs.io/gogs/internal/conf"
"gogs.io/gogs/internal/db"
"gogs.io/gogs/internal/lfsutil"
"gogs.io/gogs/internal/strutil"
)
const transferBasic = "basic"
const (
basicOperationUpload = "upload"
basicOperationDownload = "download"
)
// GET /{owner}/{repo}.git/info/lfs/object/basic/{oid}
func serveBasicDownload(c *macaron.Context, repo *db.Repository, oid lfsutil.OID) {
object, err := db.LFS.GetObjectByOID(repo.ID, oid)
if err != nil {
if db.IsErrLFSObjectNotExist(err) {
responseJSON(c.Resp, http.StatusNotFound, responseError{
Message: "Object does not exist",
})
} else {
internalServerError(c.Resp)
log.Error("Failed to get object [repo_id: %d, oid: %s]: %v", repo.ID, oid, err)
}
return
}
fpath := lfsutil.StorageLocalPath(conf.LFS.ObjectsPath, object.OID)
r, err := os.Open(fpath)
if err != nil {
internalServerError(c.Resp)
log.Error("Failed to open object file [path: %s]: %v", fpath, err)
return
}
defer r.Close()
c.Header().Set("Content-Type", "application/octet-stream")
c.Header().Set("Content-Length", strconv.FormatInt(object.Size, 10))
c.Status(http.StatusOK)
_, err = io.Copy(c.Resp, r)
if err != nil {
log.Error("Failed to copy object file: %v", err)
return
}
}
// PUT /{owner}/{repo}.git/info/lfs/object/basic/{oid}
func serveBasicUpload(c *macaron.Context, repo *db.Repository, oid lfsutil.OID) {
// NOTE: LFS client will retry upload the same object if there was a partial failure,
// therefore we would like to skip ones that already exist.
_, err := db.LFS.GetObjectByOID(repo.ID, oid)
if err == nil {
// Object exists, drain the request body and we're good.
_, _ = io.Copy(ioutil.Discard, c.Req.Request.Body)
c.Req.Request.Body.Close()
c.Status(http.StatusOK)
return
} else if !db.IsErrLFSObjectNotExist(err) {
internalServerError(c.Resp)
log.Error("Failed to get object [repo_id: %d, oid: %s]: %v", repo.ID, oid, err)
return
}
err = db.LFS.CreateObject(repo.ID, oid, c.Req.Request.Body, lfsutil.StorageLocal)
if err != nil {
internalServerError(c.Resp)
log.Error("Failed to create object [repo_id: %d, oid: %s]: %v", repo.ID, oid, err)
return
}
c.Status(http.StatusOK)
log.Trace("[LFS] Object created %q", oid)
}
// POST /{owner}/{repo}.git/info/lfs/object/basic/verify
func serveBasicVerify(c *macaron.Context, repo *db.Repository) {
var request basicVerifyRequest
defer c.Req.Request.Body.Close()
err := json.NewDecoder(c.Req.Request.Body).Decode(&request)
if err != nil {
responseJSON(c.Resp, http.StatusBadRequest, responseError{
Message: strutil.ToUpperFirst(err.Error()),
})
return
}
if !lfsutil.ValidOID(request.Oid) {
responseJSON(c.Resp, http.StatusBadRequest, responseError{
Message: "Invalid oid",
})
return
}
object, err := db.LFS.GetObjectByOID(repo.ID, lfsutil.OID(request.Oid))
if err != nil {
if db.IsErrLFSObjectNotExist(err) {
responseJSON(c.Resp, http.StatusNotFound, responseError{
Message: "Object does not exist",
})
} else {
internalServerError(c.Resp)
log.Error("Failed to get object [repo_id: %d, oid: %s]: %v", repo.ID, request.Oid, err)
}
return
}
if object.Size != request.Size {
responseJSON(c.Resp, http.StatusNotFound, responseError{
Message: "Object size mismatch",
})
return
}
c.Status(http.StatusOK)
}
type basicVerifyRequest struct {
Oid lfsutil.OID `json:"oid"`
Size int64 `json:"size"`
}
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