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171 lines
4.4 KiB
171 lines
4.4 KiB
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2018 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package repo
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import (
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"fmt"
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"io"
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"path"
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"strings"
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"code.gitea.io/gitea/modules/base"
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"code.gitea.io/gitea/modules/charset"
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"code.gitea.io/gitea/modules/context"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/lfs"
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"code.gitea.io/gitea/modules/log"
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)
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// ServeData download file from io.Reader
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func ServeData(ctx *context.Context, name string, reader io.Reader) error {
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buf := make([]byte, 1024)
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n, err := reader.Read(buf)
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if err != nil && err != io.EOF {
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return err
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}
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if n >= 0 {
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buf = buf[:n]
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}
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ctx.Resp.Header().Set("Cache-Control", "public,max-age=86400")
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name = path.Base(name)
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// Google Chrome dislike commas in filenames, so let's change it to a space
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name = strings.Replace(name, ",", " ", -1)
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if base.IsTextFile(buf) || ctx.QueryBool("render") {
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cs, err := charset.DetectEncoding(buf)
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if err != nil {
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log.Error("Detect raw file %s charset failed: %v, using by default utf-8", name, err)
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cs = "utf-8"
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}
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ctx.Resp.Header().Set("Content-Type", "text/plain; charset="+strings.ToLower(cs))
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} else if base.IsImageFile(buf) || base.IsPDFFile(buf) {
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ctx.Resp.Header().Set("Content-Disposition", fmt.Sprintf(`inline; filename="%s"`, name))
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ctx.Resp.Header().Set("Access-Control-Expose-Headers", "Content-Disposition")
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} else {
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ctx.Resp.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, name))
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ctx.Resp.Header().Set("Access-Control-Expose-Headers", "Content-Disposition")
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}
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_, err = ctx.Resp.Write(buf)
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if err != nil {
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return err
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}
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_, err = io.Copy(ctx.Resp, reader)
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return err
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}
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// ServeBlob download a git.Blob
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func ServeBlob(ctx *context.Context, blob *git.Blob) error {
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dataRc, err := blob.DataAsync()
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if err != nil {
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return err
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}
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defer func() {
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if err = dataRc.Close(); err != nil {
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log.Error("ServeBlob: Close: %v", err)
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}
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}()
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return ServeData(ctx, ctx.Repo.TreePath, dataRc)
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}
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// ServeBlobOrLFS download a git.Blob redirecting to LFS if necessary
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func ServeBlobOrLFS(ctx *context.Context, blob *git.Blob) error {
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dataRc, err := blob.DataAsync()
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if err != nil {
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return err
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}
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defer func() {
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if err = dataRc.Close(); err != nil {
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log.Error("ServeBlobOrLFS: Close: %v", err)
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}
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}()
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if meta, _ := lfs.ReadPointerFile(dataRc); meta != nil {
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meta, _ = ctx.Repo.Repository.GetLFSMetaObjectByOid(meta.Oid)
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if meta == nil {
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return ServeBlob(ctx, blob)
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}
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lfsDataRc, err := lfs.ReadMetaObject(meta)
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if err != nil {
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return err
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}
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defer func() {
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if err = lfsDataRc.Close(); err != nil {
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log.Error("ServeBlobOrLFS: Close: %v", err)
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}
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}()
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return ServeData(ctx, ctx.Repo.TreePath, lfsDataRc)
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}
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return ServeBlob(ctx, blob)
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}
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// SingleDownload download a file by repos path
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func SingleDownload(ctx *context.Context) {
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blob, err := ctx.Repo.Commit.GetBlobByPath(ctx.Repo.TreePath)
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if err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound("GetBlobByPath", nil)
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} else {
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ctx.ServerError("GetBlobByPath", err)
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}
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return
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}
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if err = ServeBlob(ctx, blob); err != nil {
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ctx.ServerError("ServeBlob", err)
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}
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}
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// SingleDownloadOrLFS download a file by repos path redirecting to LFS if necessary
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func SingleDownloadOrLFS(ctx *context.Context) {
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blob, err := ctx.Repo.Commit.GetBlobByPath(ctx.Repo.TreePath)
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if err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound("GetBlobByPath", nil)
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} else {
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ctx.ServerError("GetBlobByPath", err)
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}
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return
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}
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if err = ServeBlobOrLFS(ctx, blob); err != nil {
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ctx.ServerError("ServeBlobOrLFS", err)
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}
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}
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// DownloadByID download a file by sha1 ID
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func DownloadByID(ctx *context.Context) {
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blob, err := ctx.Repo.GitRepo.GetBlob(ctx.Params("sha"))
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if err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound("GetBlob", nil)
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} else {
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ctx.ServerError("GetBlob", err)
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}
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return
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}
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if err = ServeBlob(ctx, blob); err != nil {
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ctx.ServerError("ServeBlob", err)
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}
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}
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// DownloadByIDOrLFS download a file by sha1 ID taking account of LFS
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func DownloadByIDOrLFS(ctx *context.Context) {
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blob, err := ctx.Repo.GitRepo.GetBlob(ctx.Params("sha"))
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if err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound("GetBlob", nil)
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} else {
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ctx.ServerError("GetBlob", err)
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}
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return
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}
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if err = ServeBlobOrLFS(ctx, blob); err != nil {
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ctx.ServerError("ServeBlob", err)
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}
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}
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