初始提交: Gitea 项目代码

2026-05-30 22:47:36 +08:00
commit f288f76350
6116 changed files with 776822 additions and 0 deletions
@@ -0,0 +1,165 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"time"
+
+	auth_model "gitea.dev/models/auth"
+	git_model "gitea.dev/models/git"
+	"gitea.dev/modules/git"
+	"gitea.dev/modules/httpcache"
+	"gitea.dev/modules/httplib"
+	"gitea.dev/modules/lfs"
+	"gitea.dev/modules/setting"
+	"gitea.dev/modules/storage"
+	"gitea.dev/routers/common"
+	"gitea.dev/services/context"
+)
+
+func checkDownloadTokenScope(ctx *context.Context) bool {
+	context.CheckRepoScopedToken(ctx, ctx.Repo.Repository, auth_model.Read)
+	return !ctx.Written()
+}
+
+// ServeBlobOrLFS download a git.Blob redirecting to LFS if necessary
+func ServeBlobOrLFS(ctx *context.Context, blob *git.Blob, lastModified *time.Time) error {
+	if httpcache.HandleGenericETagPrivateCache(ctx.Req, ctx.Resp, `"`+blob.ID.String()+`"`, lastModified) {
+		return nil
+	}
+
+	lfsPointerBuf, err := blob.GetBlobBytes(lfs.MetaFileMaxSize)
+	if err != nil {
+		return err
+	}
+
+	pointer, _ := lfs.ReadPointerFromBuffer(lfsPointerBuf)
+	if pointer.IsValid() {
+		meta, _ := git_model.GetLFSMetaObjectByOid(ctx, ctx.Repo.Repository.ID, pointer.Oid)
+		if meta == nil {
+			return common.ServeBlob(ctx.Base, ctx.Repo.Repository, ctx.Repo.TreePath, blob, lastModified)
+		}
+		if httpcache.HandleGenericETagPrivateCache(ctx.Req, ctx.Resp, `"`+pointer.Oid+`"`, meta.UpdatedUnix.AsTimePtr()) {
+			return nil
+		}
+
+		if setting.LFS.Storage.ServeDirect() {
+			// If we have a signed url (S3, object storage, blob storage), redirect to this directly.
+			u, err := storage.LFS.ServeDirectURL(pointer.RelativePath(), blob.Name(), ctx.Req.Method, nil)
+			if u != nil && err == nil {
+				ctx.Redirect(u.String())
+				return nil
+			}
+		}
+
+		lfsDataFile, err := lfs.ReadMetaObject(meta.Pointer)
+		if err != nil {
+			return err
+		}
+		defer lfsDataFile.Close()
+		httplib.ServeUserContentByFile(ctx.Req, ctx.Resp, lfsDataFile, httplib.ServeHeaderOptions{Filename: ctx.Repo.TreePath})
+		return nil
+	}
+
+	return common.ServeBlob(ctx.Base, ctx.Repo.Repository, ctx.Repo.TreePath, blob, lastModified)
+}
+
+func getBlobForEntry(ctx *context.Context) (*git.Blob, *time.Time) {
+	entry, err := ctx.Repo.Commit.GetTreeEntryByPath(ctx.Repo.TreePath)
+	if err != nil {
+		if git.IsErrNotExist(err) {
+			ctx.NotFound(err)
+		} else {
+			ctx.ServerError("GetTreeEntryByPath", err)
+		}
+		return nil, nil
+	}
+
+	if entry.IsDir() || entry.IsSubModule() {
+		ctx.NotFound(nil)
+		return nil, nil
+	}
+
+	latestCommit, err := ctx.Repo.GitRepo.GetTreePathLatestCommit(ctx.Repo.Commit.ID.String(), ctx.Repo.TreePath)
+	if err != nil {
+		ctx.ServerError("GetTreePathLatestCommit", err)
+		return nil, nil
+	}
+	lastModified := &latestCommit.Committer.When
+
+	return entry.Blob(), lastModified
+}
+
+// SingleDownload download a file by repos path
+func SingleDownload(ctx *context.Context) {
+	if !checkDownloadTokenScope(ctx) {
+		return
+	}
+
+	blob, lastModified := getBlobForEntry(ctx)
+	if blob == nil {
+		return
+	}
+
+	if err := common.ServeBlob(ctx.Base, ctx.Repo.Repository, ctx.Repo.TreePath, 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) {
+	if !checkDownloadTokenScope(ctx) {
+		return
+	}
+
+	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) {
+	if !checkDownloadTokenScope(ctx) {
+		return
+	}
+
+	blob, err := ctx.Repo.GitRepo.GetBlob(ctx.PathParam("sha"))
+	if err != nil {
+		if git.IsErrNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetBlob", err)
+		}
+		return
+	}
+	if err = common.ServeBlob(ctx.Base, ctx.Repo.Repository, ctx.Repo.TreePath, blob, nil); err != nil {
+		ctx.ServerError("ServeBlob", err)
+	}
+}
+
+// DownloadByIDOrLFS download a file by sha1 ID taking account of LFS
+func DownloadByIDOrLFS(ctx *context.Context) {
+	if !checkDownloadTokenScope(ctx) {
+		return
+	}
+
+	blob, err := ctx.Repo.GitRepo.GetBlob(ctx.PathParam("sha"))
+	if err != nil {
+		if git.IsErrNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetBlob", err)
+		}
+		return
+	}
+	if err = ServeBlobOrLFS(ctx, blob, nil); err != nil {
+		ctx.ServerError("ServeBlob", err)
+	}
+}