Add raw blob endpoint to get objects by SHA ID (#5334)

* Add raw blob endpoint

This should make it possible to download raw blobs directly from
/:repo/:username/raw/blob/:sha1 URLs.

* fix: Make it work

* As an SHA-ID is no path getRefNameFromPath can't be used to verify
file specifying parameter
* added relevant change in go-gitea/git #132

Signed-off-by: Berengar W. Lehr <[email protected]>

* Update Gopkg.lock

Can't update all vendors due to errors

Signed-off-by: Berengar W. Lehr <[email protected]>

* style: Add Gitea copyright header

* feat: Added integration test for /repo/u/r/raw/blob

* fix: correct year in copyright header

Author: HoffmannP

Gopkg.lock

@@ -0,0 +1,24 @@
+// 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 integrations
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDownloadByID(t *testing.T) {
+	prepareTestEnv(t)
+
+	session := loginUser(t, "user2")
+
+	// Request raw blob
+	req := NewRequest(t, "GET", "/user2/repo1/raw/blob/4b4851ad51df6a7d9f25c979345979eaeb5b349f")
+	resp := session.MakeRequest(t, req, http.StatusOK)
+
+	assert.Equal(t, "# repo1\n\nDescription for repo1", resp.Body.String())
+}

integrations/download_test.go

@@ -484,6 +484,8 @@ const (
 	RepoRefTag
 	// RepoRefCommit commit
 	RepoRefCommit
+	// RepoRefBlob blob
+	RepoRefBlob
 )
 
 // RepoRef handles repository reference names when the ref name is not
@@ -519,6 +521,9 @@ func getRefName(ctx *Context, pathType RepoRefType) string {
 		if refName := getRefName(ctx, RepoRefCommit); len(refName) > 0 {
 			return refName
 		}
+		if refName := getRefName(ctx, RepoRefBlob); len(refName) > 0 {
+			return refName
+		}
 		ctx.Repo.TreePath = path
 		return ctx.Repo.Repository.DefaultBranch
 	case RepoRefBranch:
@@ -531,6 +536,12 @@ func getRefName(ctx *Context, pathType RepoRefType) string {
 			ctx.Repo.TreePath = strings.Join(parts[1:], "/")
 			return parts[0]
 		}
+	case RepoRefBlob:
+		_, err := ctx.Repo.GitRepo.GetBlob(path)
+		if err != nil {
+			return ""
+		}
+		return path
 	default:
 		log.Error(4, "Unrecognized path type: %v", path)
 	}

modules/context/repo.go

@@ -1,4 +1,5 @@
 // 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.
 
@@ -69,3 +70,19 @@ func SingleDownload(ctx *context.Context) {
 		ctx.ServerError("ServeBlob", 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 = ServeBlob(ctx, blob); err != nil {
+		ctx.ServerError("ServeBlob", err)
+	}
+}

routers/repo/download.go

@@ -693,6 +693,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 			m.Get("/branch/*", context.RepoRefByType(context.RepoRefBranch), repo.SingleDownload)
 			m.Get("/tag/*", context.RepoRefByType(context.RepoRefTag), repo.SingleDownload)
 			m.Get("/commit/*", context.RepoRefByType(context.RepoRefCommit), repo.SingleDownload)
+			m.Get("/blob/:sha", context.RepoRefByType(context.RepoRefBlob), repo.DownloadByID)
 			// "/*" route is deprecated, and kept for backward compatibility
 			m.Get("/*", context.RepoRefByType(context.RepoRefLegacy), repo.SingleDownload)
 		}, repo.MustBeNotBare, context.CheckUnit(models.UnitTypeCode))