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Do not "guess" the file encoding/BOM when using API to upload files (#25828)
Related issue: #18368 It doesn't seem right to "guess" the file encoding/BOM when using API to upload files. The API should save the uploaded content as-is.
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parent
d1e066f5d6
commit
22eeede885
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@ -4,7 +4,6 @@
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package files
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import (
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"bytes"
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"context"
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"fmt"
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"path"
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@ -12,21 +11,15 @@ import (
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"time"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/models/db"
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git_model "code.gitea.io/gitea/models/git"
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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/charset"
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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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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/util"
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asymkey_service "code.gitea.io/gitea/services/asymkey"
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stdcharset "golang.org/x/net/html/charset"
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"golang.org/x/text/transform"
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)
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// IdentityOptions for a person's identity like an author or committer
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@ -66,78 +59,9 @@ type ChangeRepoFilesOptions struct {
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type RepoFileOptions struct {
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treePath string
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fromTreePath string
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encoding string
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bom bool
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executable bool
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}
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func detectEncodingAndBOM(entry *git.TreeEntry, repo *repo_model.Repository) (string, bool) {
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reader, err := entry.Blob().DataAsync()
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if err != nil {
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// return default
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return "UTF-8", false
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}
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defer reader.Close()
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buf := make([]byte, 1024)
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n, err := util.ReadAtMost(reader, buf)
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if err != nil {
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// return default
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return "UTF-8", false
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}
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buf = buf[:n]
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if setting.LFS.StartServer {
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pointer, _ := lfs.ReadPointerFromBuffer(buf)
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if pointer.IsValid() {
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meta, err := git_model.GetLFSMetaObjectByOid(db.DefaultContext, repo.ID, pointer.Oid)
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if err != nil && err != git_model.ErrLFSObjectNotExist {
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// return default
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return "UTF-8", false
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}
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if meta != nil {
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dataRc, err := lfs.ReadMetaObject(pointer)
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if err != nil {
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// return default
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return "UTF-8", false
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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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// return default
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return "UTF-8", false
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}
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buf = buf[:n]
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}
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}
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}
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encoding, err := charset.DetectEncoding(buf)
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if err != nil {
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// just default to utf-8 and no bom
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return "UTF-8", false
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}
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if encoding == "UTF-8" {
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return encoding, bytes.Equal(buf[0:3], charset.UTF8BOM)
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}
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charsetEncoding, _ := stdcharset.Lookup(encoding)
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if charsetEncoding == nil {
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return "UTF-8", false
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}
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result, n, err := transform.String(charsetEncoding.NewDecoder(), string(buf))
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if err != nil {
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// return default
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return "UTF-8", false
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}
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if n > 2 {
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return encoding, bytes.Equal([]byte(result)[0:3], charset.UTF8BOM)
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}
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return encoding, false
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}
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// ChangeRepoFiles adds, updates or removes multiple files in the given repository
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func ChangeRepoFiles(ctx context.Context, repo *repo_model.Repository, doer *user_model.User, opts *ChangeRepoFilesOptions) (*structs.FilesResponse, error) {
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// If no branch name is set, assume default branch
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@ -184,8 +108,6 @@ func ChangeRepoFiles(ctx context.Context, repo *repo_model.Repository, doer *use
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file.Options = &RepoFileOptions{
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treePath: treePath,
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fromTreePath: fromTreePath,
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encoding: "UTF-8",
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bom: false,
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executable: false,
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}
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treePaths = append(treePaths, treePath)
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@ -381,7 +303,6 @@ func handleCheckErrors(file *ChangeRepoFile, commit *git.Commit, opts *ChangeRep
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// haven't been made. We throw an error if one wasn't provided.
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return models.ErrSHAOrCommitIDNotProvided{}
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}
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file.Options.encoding, file.Options.bom = detectEncodingAndBOM(fromEntry, repo)
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file.Options.executable = fromEntry.IsExecutable()
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}
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if file.Operation == "create" || file.Operation == "update" {
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@ -466,28 +387,8 @@ func CreateOrUpdateFile(ctx context.Context, t *TemporaryUploadRepository, file
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}
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}
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content := file.Content
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if file.Options.bom {
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content = string(charset.UTF8BOM) + content
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}
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if file.Options.encoding != "UTF-8" {
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charsetEncoding, _ := stdcharset.Lookup(file.Options.encoding)
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if charsetEncoding != nil {
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result, _, err := transform.String(charsetEncoding.NewEncoder(), content)
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if err != nil {
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// Look if we can't encode back in to the original we should just stick with utf-8
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log.Error("Error re-encoding %s (%s) as %s - will stay as UTF-8: %v", file.TreePath, file.FromTreePath, file.Options.encoding, err)
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result = content
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}
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content = result
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} else {
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log.Error("Unknown encoding: %s", file.Options.encoding)
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}
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}
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// Reset the opts.Content to our adjusted content to ensure that LFS gets the correct content
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file.Content = content
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treeObjectContent := file.Content
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var lfsMetaObject *git_model.LFSMetaObject
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if setting.LFS.StartServer && hasOldBranch {
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// Check there is no way this can return multiple infos
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filename2attribute2info, err := t.gitRepo.CheckAttribute(git.CheckAttributeOpts{
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@ -506,12 +407,12 @@ func CreateOrUpdateFile(ctx context.Context, t *TemporaryUploadRepository, file
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return err
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}
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lfsMetaObject = &git_model.LFSMetaObject{Pointer: pointer, RepositoryID: repoID}
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content = pointer.StringContent()
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treeObjectContent = pointer.StringContent()
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}
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}
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// Add the object to the database
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objectHash, err := t.HashObject(strings.NewReader(content))
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objectHash, err := t.HashObject(strings.NewReader(treeObjectContent))
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if err != nil {
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return err
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}
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