bbffcc3aec
There are multiple places where Gitea does not properly escape URLs that it is building and there are multiple places where it builds urls when there is already a simpler function available to use this.
This is an extensive PR attempting to fix these issues.
1. The first commit in this PR looks through all href, src and links in the Gitea codebase and has attempted to catch all the places where there is potentially incomplete escaping.
2. Whilst doing this we will prefer to use functions that create URLs over recreating them by hand.
3. All uses of strings should be directly escaped - even if they are not currently expected to contain escaping characters. The main benefit to doing this will be that we can consider relaxing the constraints on user names and reponames in future.
4. The next commit looks at escaping in the wiki and re-considers the urls that are used there. Using the improved escaping here wiki files containing '/'. (This implementation will currently still place all of the wiki files the root directory of the repo but this would not be difficult to change.)
5. The title generation in feeds is now properly escaped.
6. EscapePound is no longer needed - urls should be PathEscaped / QueryEscaped as necessary but then re-escaped with Escape when creating html with locales Signed-off-by: Andrew Thornton <art27@cantab.net>
Signed-off-by: Andrew Thornton <art27@cantab.net>
538 lines
15 KiB
Go
538 lines
15 KiB
Go
// Copyright 2019 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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"bytes"
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"fmt"
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gotemplate "html/template"
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"io"
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"net/http"
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"net/url"
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"path"
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"strconv"
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"strings"
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"code.gitea.io/gitea/models"
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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/git/pipeline"
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"code.gitea.io/gitea/modules/lfs"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/storage"
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"code.gitea.io/gitea/modules/typesniffer"
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"code.gitea.io/gitea/modules/util"
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)
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const (
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tplSettingsLFS base.TplName = "repo/settings/lfs"
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tplSettingsLFSLocks base.TplName = "repo/settings/lfs_locks"
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tplSettingsLFSFile base.TplName = "repo/settings/lfs_file"
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tplSettingsLFSFileFind base.TplName = "repo/settings/lfs_file_find"
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tplSettingsLFSPointers base.TplName = "repo/settings/lfs_pointers"
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)
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// LFSFiles shows a repository's LFS files
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func LFSFiles(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSFiles", nil)
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return
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}
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page := ctx.FormInt("page")
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if page <= 1 {
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page = 1
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}
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total, err := ctx.Repo.Repository.CountLFSMetaObjects()
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if err != nil {
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ctx.ServerError("LFSFiles", err)
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return
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}
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ctx.Data["Total"] = total
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pager := context.NewPagination(int(total), setting.UI.ExplorePagingNum, page, 5)
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ctx.Data["Title"] = ctx.Tr("repo.settings.lfs")
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ctx.Data["PageIsSettingsLFS"] = true
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lfsMetaObjects, err := ctx.Repo.Repository.GetLFSMetaObjects(pager.Paginater.Current(), setting.UI.ExplorePagingNum)
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if err != nil {
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ctx.ServerError("LFSFiles", err)
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return
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}
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ctx.Data["LFSFiles"] = lfsMetaObjects
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ctx.Data["Page"] = pager
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ctx.HTML(http.StatusOK, tplSettingsLFS)
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}
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// LFSLocks shows a repository's LFS locks
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func LFSLocks(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSLocks", nil)
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return
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}
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ctx.Data["LFSFilesLink"] = ctx.Repo.RepoLink + "/settings/lfs"
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page := ctx.FormInt("page")
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if page <= 1 {
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page = 1
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}
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total, err := models.CountLFSLockByRepoID(ctx.Repo.Repository.ID)
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if err != nil {
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ctx.ServerError("LFSLocks", err)
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return
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}
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ctx.Data["Total"] = total
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pager := context.NewPagination(int(total), setting.UI.ExplorePagingNum, page, 5)
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ctx.Data["Title"] = ctx.Tr("repo.settings.lfs_locks")
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ctx.Data["PageIsSettingsLFS"] = true
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lfsLocks, err := models.GetLFSLockByRepoID(ctx.Repo.Repository.ID, pager.Paginater.Current(), setting.UI.ExplorePagingNum)
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if err != nil {
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ctx.ServerError("LFSLocks", err)
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return
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}
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ctx.Data["LFSLocks"] = lfsLocks
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if len(lfsLocks) == 0 {
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ctx.Data["Page"] = pager
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ctx.HTML(http.StatusOK, tplSettingsLFSLocks)
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return
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}
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// Clone base repo.
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tmpBasePath, err := models.CreateTemporaryPath("locks")
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if err != nil {
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log.Error("Failed to create temporary path: %v", err)
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ctx.ServerError("LFSLocks", err)
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return
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}
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defer func() {
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if err := models.RemoveTemporaryPath(tmpBasePath); err != nil {
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log.Error("LFSLocks: RemoveTemporaryPath: %v", err)
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}
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}()
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if err := git.Clone(ctx.Repo.Repository.RepoPath(), tmpBasePath, git.CloneRepoOptions{
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Bare: true,
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Shared: true,
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}); err != nil {
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log.Error("Failed to clone repository: %s (%v)", ctx.Repo.Repository.FullName(), err)
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ctx.ServerError("LFSLocks", fmt.Errorf("Failed to clone repository: %s (%v)", ctx.Repo.Repository.FullName(), err))
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return
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}
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gitRepo, err := git.OpenRepository(tmpBasePath)
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if err != nil {
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log.Error("Unable to open temporary repository: %s (%v)", tmpBasePath, err)
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ctx.ServerError("LFSLocks", fmt.Errorf("Failed to open new temporary repository in: %s %v", tmpBasePath, err))
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return
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}
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defer gitRepo.Close()
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filenames := make([]string, len(lfsLocks))
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for i, lock := range lfsLocks {
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filenames[i] = lock.Path
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}
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if err := gitRepo.ReadTreeToIndex(ctx.Repo.Repository.DefaultBranch); err != nil {
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log.Error("Unable to read the default branch to the index: %s (%v)", ctx.Repo.Repository.DefaultBranch, err)
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ctx.ServerError("LFSLocks", fmt.Errorf("Unable to read the default branch to the index: %s (%v)", ctx.Repo.Repository.DefaultBranch, err))
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return
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}
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name2attribute2info, err := gitRepo.CheckAttribute(git.CheckAttributeOpts{
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Attributes: []string{"lockable"},
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Filenames: filenames,
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CachedOnly: true,
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})
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if err != nil {
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log.Error("Unable to check attributes in %s (%v)", tmpBasePath, err)
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ctx.ServerError("LFSLocks", err)
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return
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}
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lockables := make([]bool, len(lfsLocks))
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for i, lock := range lfsLocks {
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attribute2info, has := name2attribute2info[lock.Path]
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if !has {
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continue
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}
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if attribute2info["lockable"] != "set" {
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continue
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}
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lockables[i] = true
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}
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ctx.Data["Lockables"] = lockables
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filelist, err := gitRepo.LsFiles(filenames...)
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if err != nil {
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log.Error("Unable to lsfiles in %s (%v)", tmpBasePath, err)
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ctx.ServerError("LFSLocks", err)
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return
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}
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filemap := make(map[string]bool, len(filelist))
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for _, name := range filelist {
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filemap[name] = true
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}
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linkable := make([]bool, len(lfsLocks))
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for i, lock := range lfsLocks {
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linkable[i] = filemap[lock.Path]
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}
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ctx.Data["Linkable"] = linkable
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ctx.Data["Page"] = pager
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ctx.HTML(http.StatusOK, tplSettingsLFSLocks)
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}
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// LFSLockFile locks a file
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func LFSLockFile(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSLocks", nil)
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return
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}
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originalPath := ctx.FormString("path")
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lockPath := originalPath
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if len(lockPath) == 0 {
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ctx.Flash.Error(ctx.Tr("repo.settings.lfs_invalid_locking_path", originalPath))
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs/locks")
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return
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}
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if lockPath[len(lockPath)-1] == '/' {
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ctx.Flash.Error(ctx.Tr("repo.settings.lfs_invalid_lock_directory", originalPath))
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs/locks")
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return
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}
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lockPath = path.Clean("/" + lockPath)[1:]
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if len(lockPath) == 0 {
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ctx.Flash.Error(ctx.Tr("repo.settings.lfs_invalid_locking_path", originalPath))
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs/locks")
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return
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}
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_, err := models.CreateLFSLock(&models.LFSLock{
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Repo: ctx.Repo.Repository,
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Path: lockPath,
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Owner: ctx.User,
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})
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if err != nil {
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if models.IsErrLFSLockAlreadyExist(err) {
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ctx.Flash.Error(ctx.Tr("repo.settings.lfs_lock_already_exists", originalPath))
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs/locks")
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return
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}
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ctx.ServerError("LFSLockFile", err)
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return
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}
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs/locks")
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}
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// LFSUnlock forcibly unlocks an LFS lock
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func LFSUnlock(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSUnlock", nil)
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return
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}
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_, err := models.DeleteLFSLockByID(ctx.ParamsInt64("lid"), ctx.User, true)
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if err != nil {
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ctx.ServerError("LFSUnlock", err)
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return
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}
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs/locks")
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}
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// LFSFileGet serves a single LFS file
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func LFSFileGet(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSFileGet", nil)
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return
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}
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ctx.Data["LFSFilesLink"] = ctx.Repo.RepoLink + "/settings/lfs"
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oid := ctx.Params("oid")
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ctx.Data["Title"] = oid
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ctx.Data["PageIsSettingsLFS"] = true
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meta, err := ctx.Repo.Repository.GetLFSMetaObjectByOid(oid)
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if err != nil {
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if err == models.ErrLFSObjectNotExist {
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ctx.NotFound("LFSFileGet", nil)
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return
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}
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ctx.ServerError("LFSFileGet", err)
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return
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}
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ctx.Data["LFSFile"] = meta
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dataRc, err := lfs.ReadMetaObject(meta.Pointer)
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if err != nil {
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ctx.ServerError("LFSFileGet", err)
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return
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}
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defer dataRc.Close()
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buf := make([]byte, 1024)
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n, err := util.ReadAtMost(dataRc, buf)
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if err != nil {
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ctx.ServerError("Data", err)
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return
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}
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buf = buf[:n]
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st := typesniffer.DetectContentType(buf)
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ctx.Data["IsTextFile"] = st.IsText()
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isRepresentableAsText := st.IsRepresentableAsText()
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fileSize := meta.Size
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ctx.Data["FileSize"] = meta.Size
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ctx.Data["RawFileLink"] = fmt.Sprintf("%s%s/%s.git/info/lfs/objects/%s/%s", setting.AppURL, url.PathEscape(ctx.Repo.Repository.OwnerName), url.PathEscape(ctx.Repo.Repository.Name), url.PathEscape(meta.Oid), "direct")
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switch {
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case isRepresentableAsText:
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if st.IsSvgImage() {
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ctx.Data["IsImageFile"] = true
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}
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if fileSize >= setting.UI.MaxDisplayFileSize {
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ctx.Data["IsFileTooLarge"] = true
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break
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}
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rd := charset.ToUTF8WithFallbackReader(io.MultiReader(bytes.NewReader(buf), dataRc))
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// Building code view blocks with line number on server side.
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fileContent, _ := io.ReadAll(rd)
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var output bytes.Buffer
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lines := strings.Split(string(fileContent), "\n")
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//Remove blank line at the end of file
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if len(lines) > 0 && lines[len(lines)-1] == "" {
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lines = lines[:len(lines)-1]
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}
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for index, line := range lines {
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line = gotemplate.HTMLEscapeString(line)
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if index != len(lines)-1 {
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line += "\n"
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}
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output.WriteString(fmt.Sprintf(`<li class="L%d" rel="L%d">%s</li>`, index+1, index+1, line))
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}
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ctx.Data["FileContent"] = gotemplate.HTML(output.String())
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output.Reset()
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for i := 0; i < len(lines); i++ {
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output.WriteString(fmt.Sprintf(`<span id="L%d">%d</span>`, i+1, i+1))
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}
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ctx.Data["LineNums"] = gotemplate.HTML(output.String())
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case st.IsPDF():
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ctx.Data["IsPDFFile"] = true
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case st.IsVideo():
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ctx.Data["IsVideoFile"] = true
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case st.IsAudio():
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ctx.Data["IsAudioFile"] = true
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case st.IsImage() && (setting.UI.SVG.Enabled || !st.IsSvgImage()):
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ctx.Data["IsImageFile"] = true
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}
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ctx.HTML(http.StatusOK, tplSettingsLFSFile)
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}
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// LFSDelete disassociates the provided oid from the repository and if the lfs file is no longer associated with any repositories - deletes it
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func LFSDelete(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSDelete", nil)
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return
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}
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oid := ctx.Params("oid")
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count, err := ctx.Repo.Repository.RemoveLFSMetaObjectByOid(oid)
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if err != nil {
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ctx.ServerError("LFSDelete", err)
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return
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}
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// FIXME: Warning: the LFS store is not locked - and can't be locked - there could be a race condition here
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// Please note a similar condition happens in models/repo.go DeleteRepository
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if count == 0 {
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oidPath := path.Join(oid[0:2], oid[2:4], oid[4:])
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err = storage.LFS.Delete(oidPath)
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if err != nil {
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ctx.ServerError("LFSDelete", err)
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return
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}
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}
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ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs")
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}
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// LFSFileFind guesses a sha for the provided oid (or uses the provided sha) and then finds the commits that contain this sha
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func LFSFileFind(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSFind", nil)
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return
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}
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oid := ctx.FormString("oid")
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size := ctx.FormInt64("size")
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if len(oid) == 0 || size == 0 {
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ctx.NotFound("LFSFind", nil)
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return
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}
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sha := ctx.FormString("sha")
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ctx.Data["Title"] = oid
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ctx.Data["PageIsSettingsLFS"] = true
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var hash git.SHA1
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if len(sha) == 0 {
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pointer := lfs.Pointer{Oid: oid, Size: size}
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hash = git.ComputeBlobHash([]byte(pointer.StringContent()))
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sha = hash.String()
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} else {
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hash = git.MustIDFromString(sha)
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}
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ctx.Data["LFSFilesLink"] = ctx.Repo.RepoLink + "/settings/lfs"
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ctx.Data["Oid"] = oid
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ctx.Data["Size"] = size
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ctx.Data["SHA"] = sha
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results, err := pipeline.FindLFSFile(ctx.Repo.GitRepo, hash)
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if err != nil && err != io.EOF {
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log.Error("Failure in FindLFSFile: %v", err)
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ctx.ServerError("LFSFind: FindLFSFile.", err)
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return
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}
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ctx.Data["Results"] = results
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ctx.HTML(http.StatusOK, tplSettingsLFSFileFind)
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}
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// LFSPointerFiles will search the repository for pointer files and report which are missing LFS files in the content store
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func LFSPointerFiles(ctx *context.Context) {
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if !setting.LFS.StartServer {
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ctx.NotFound("LFSFileGet", nil)
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return
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}
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ctx.Data["PageIsSettingsLFS"] = true
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err := git.LoadGitVersion()
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if err != nil {
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log.Fatal("Error retrieving git version: %v", err)
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}
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ctx.Data["LFSFilesLink"] = ctx.Repo.RepoLink + "/settings/lfs"
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err = func() error {
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pointerChan := make(chan lfs.PointerBlob)
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errChan := make(chan error, 1)
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go lfs.SearchPointerBlobs(ctx, ctx.Repo.GitRepo, pointerChan, errChan)
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numPointers := 0
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var numAssociated, numNoExist, numAssociatable int
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type pointerResult struct {
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SHA string
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Oid string
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Size int64
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InRepo bool
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Exists bool
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Accessible bool
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}
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results := []pointerResult{}
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contentStore := lfs.NewContentStore()
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repo := ctx.Repo.Repository
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for pointerBlob := range pointerChan {
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numPointers++
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result := pointerResult{
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SHA: pointerBlob.Hash,
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Oid: pointerBlob.Oid,
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Size: pointerBlob.Size,
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}
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if _, err := repo.GetLFSMetaObjectByOid(pointerBlob.Oid); err != nil {
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if err != models.ErrLFSObjectNotExist {
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return err
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}
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} else {
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result.InRepo = true
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}
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result.Exists, err = contentStore.Exists(pointerBlob.Pointer)
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if err != nil {
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return err
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}
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if result.Exists {
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if !result.InRepo {
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// Can we fix?
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// OK well that's "simple"
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// - we need to check whether current user has access to a repo that has access to the file
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result.Accessible, err = models.LFSObjectAccessible(ctx.User, pointerBlob.Oid)
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if err != nil {
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return err
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}
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} else {
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result.Accessible = true
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}
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}
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if result.InRepo {
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numAssociated++
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}
|
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if !result.Exists {
|
|
numNoExist++
|
|
}
|
|
if !result.InRepo && result.Accessible {
|
|
numAssociatable++
|
|
}
|
|
|
|
results = append(results, result)
|
|
}
|
|
|
|
err, has := <-errChan
|
|
if has {
|
|
return err
|
|
}
|
|
|
|
ctx.Data["Pointers"] = results
|
|
ctx.Data["NumPointers"] = numPointers
|
|
ctx.Data["NumAssociated"] = numAssociated
|
|
ctx.Data["NumAssociatable"] = numAssociatable
|
|
ctx.Data["NumNoExist"] = numNoExist
|
|
ctx.Data["NumNotAssociated"] = numPointers - numAssociated
|
|
|
|
return nil
|
|
}()
|
|
if err != nil {
|
|
ctx.ServerError("LFSPointerFiles", err)
|
|
return
|
|
}
|
|
|
|
ctx.HTML(http.StatusOK, tplSettingsLFSPointers)
|
|
}
|
|
|
|
// LFSAutoAssociate auto associates accessible lfs files
|
|
func LFSAutoAssociate(ctx *context.Context) {
|
|
if !setting.LFS.StartServer {
|
|
ctx.NotFound("LFSAutoAssociate", nil)
|
|
return
|
|
}
|
|
oids := ctx.FormStrings("oid")
|
|
metas := make([]*models.LFSMetaObject, len(oids))
|
|
for i, oid := range oids {
|
|
idx := strings.IndexRune(oid, ' ')
|
|
if idx < 0 || idx+1 > len(oid) {
|
|
ctx.ServerError("LFSAutoAssociate", fmt.Errorf("Illegal oid input: %s", oid))
|
|
return
|
|
}
|
|
var err error
|
|
metas[i] = &models.LFSMetaObject{}
|
|
metas[i].Size, err = strconv.ParseInt(oid[idx+1:], 10, 64)
|
|
if err != nil {
|
|
ctx.ServerError("LFSAutoAssociate", fmt.Errorf("Illegal oid input: %s %v", oid, err))
|
|
return
|
|
}
|
|
metas[i].Oid = oid[:idx]
|
|
//metas[i].RepositoryID = ctx.Repo.Repository.ID
|
|
}
|
|
if err := models.LFSAutoAssociate(metas, ctx.User, ctx.Repo.Repository.ID); err != nil {
|
|
ctx.ServerError("LFSAutoAssociate", err)
|
|
return
|
|
}
|
|
ctx.Redirect(ctx.Repo.RepoLink + "/settings/lfs")
|
|
}
|