From 4270165f8c8eda32c0c886880d304f72bda643a0 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Tue, 12 Dec 2023 15:23:59 +0100 Subject: [PATCH] build(deps): bump github.com/go-git/go-git/v5 from 5.10.1 to 5.11.0 (#47) Bumps [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) from 5.10.1 to 5.11.0. - [Release notes](https://github.com/go-git/go-git/releases) - [Commits](https://github.com/go-git/go-git/compare/v5.10.1...v5.11.0) --- updated-dependencies: - dependency-name: github.com/go-git/go-git/v5 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> --- go.mod | 2 +- go.sum | 6 +- .../go-git/go-git/v5/config/branch.go | 2 +- .../go-git/go-git/v5/config/config.go | 3 +- .../go-git/go-git/v5/plumbing/object/patch.go | 4 +- .../go-git/go-git/v5/plumbing/reference.go | 89 +++++++++++++ vendor/github.com/go-git/go-git/v5/remote.go | 23 +++- .../github.com/go-git/go-git/v5/repository.go | 9 +- .../v5/storage/filesystem/dotgit/dotgit.go | 64 ++++++--- .../go-git/v5/storage/filesystem/storage.go | 5 + .../github.com/go-git/go-git/v5/worktree.go | 124 +++++++++++++++++- vendor/modules.txt | 2 +- 12 files changed, 300 insertions(+), 33 deletions(-) diff --git a/go.mod b/go.mod index 7de0c1f..237d3a1 100644 --- a/go.mod +++ b/go.mod @@ -3,7 +3,7 @@ module github.com/zimbatm/github-deploy go 1.19 require ( - github.com/go-git/go-git/v5 v5.10.1 + github.com/go-git/go-git/v5 v5.11.0 github.com/google/go-github v17.0.0+incompatible github.com/zimbatm/go-secretvalue v0.0.0-20190429145844-f5f44e7f9f16 golang.org/x/oauth2 v0.15.0 diff --git a/go.sum b/go.sum index 6c6d7a9..7ac19b4 100644 --- a/go.sum +++ b/go.sum @@ -26,8 +26,8 @@ github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376/go.mod h1:an3vInlBmS github.com/go-git/go-billy/v5 v5.5.0 h1:yEY4yhzCDuMGSv83oGxiBotRzhwhNr8VZyphhiu+mTU= github.com/go-git/go-billy/v5 v5.5.0/go.mod h1:hmexnoNsr2SJU1Ju67OaNz5ASJY3+sHgFRpCtpDCKow= github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMje31YglSBqCdIqdhKBW8lokaMrL3uTkpGYlE2OOT4= -github.com/go-git/go-git/v5 v5.10.1 h1:tu8/D8i+TWxgKpzQ3Vc43e+kkhXqtsZCKI/egajKnxk= -github.com/go-git/go-git/v5 v5.10.1/go.mod h1:uEuHjxkHap8kAl//V5F/nNWwqIYtP/402ddd05mp0wg= +github.com/go-git/go-git/v5 v5.11.0 h1:XIZc1p+8YzypNr34itUfSvYJcv+eYdTnTvOZ2vD3cA4= +github.com/go-git/go-git/v5 v5.11.0/go.mod h1:6GFcX2P3NM7FPBfpePbpLd21XxsgdAt+lKqXmCUiUCY= github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE= github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= @@ -66,8 +66,8 @@ github.com/skeema/knownhosts v1.2.1/go.mod h1:xYbVRSPxqBZFrdmDyMmsOs+uX1UZC3nTN3 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= -github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk= github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= +github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk= github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM= github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw= github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= diff --git a/vendor/github.com/go-git/go-git/v5/config/branch.go b/vendor/github.com/go-git/go-git/v5/config/branch.go index 652270a..db2cb49 100644 --- a/vendor/github.com/go-git/go-git/v5/config/branch.go +++ b/vendor/github.com/go-git/go-git/v5/config/branch.go @@ -54,7 +54,7 @@ func (b *Branch) Validate() error { return errBranchInvalidRebase } - return nil + return plumbing.NewBranchReferenceName(b.Name).Validate() } func (b *Branch) marshal() *format.Subsection { diff --git a/vendor/github.com/go-git/go-git/v5/config/config.go b/vendor/github.com/go-git/go-git/v5/config/config.go index da425a7..6d41c15 100644 --- a/vendor/github.com/go-git/go-git/v5/config/config.go +++ b/vendor/github.com/go-git/go-git/v5/config/config.go @@ -13,6 +13,7 @@ import ( "github.com/go-git/go-billy/v5/osfs" "github.com/go-git/go-git/v5/internal/url" + "github.com/go-git/go-git/v5/plumbing" format "github.com/go-git/go-git/v5/plumbing/format/config" ) @@ -614,7 +615,7 @@ func (c *RemoteConfig) Validate() error { c.Fetch = []RefSpec{RefSpec(fmt.Sprintf(DefaultFetchRefSpec, c.Name))} } - return nil + return plumbing.NewRemoteHEADReferenceName(c.Name).Validate() } func (c *RemoteConfig) unmarshal(s *format.Subsection) error { diff --git a/vendor/github.com/go-git/go-git/v5/plumbing/object/patch.go b/vendor/github.com/go-git/go-git/v5/plumbing/object/patch.go index 06bc35b..dd8fef4 100644 --- a/vendor/github.com/go-git/go-git/v5/plumbing/object/patch.go +++ b/vendor/github.com/go-git/go-git/v5/plumbing/object/patch.go @@ -317,8 +317,8 @@ func getFileStatsFromFilePatches(filePatches []fdiff.FilePatch) FileStats { // File is deleted. cs.Name = from.Path() } else if from.Path() != to.Path() { - // File is renamed. Not supported. - // cs.Name = fmt.Sprintf("%s => %s", from.Path(), to.Path()) + // File is renamed. + cs.Name = fmt.Sprintf("%s => %s", from.Path(), to.Path()) } else { cs.Name = from.Path() } diff --git a/vendor/github.com/go-git/go-git/v5/plumbing/reference.go b/vendor/github.com/go-git/go-git/v5/plumbing/reference.go index 5a67f69..ddba930 100644 --- a/vendor/github.com/go-git/go-git/v5/plumbing/reference.go +++ b/vendor/github.com/go-git/go-git/v5/plumbing/reference.go @@ -3,6 +3,7 @@ package plumbing import ( "errors" "fmt" + "regexp" "strings" ) @@ -29,6 +30,9 @@ var RefRevParseRules = []string{ var ( ErrReferenceNotFound = errors.New("reference not found") + + // ErrInvalidReferenceName is returned when a reference name is invalid. + ErrInvalidReferenceName = errors.New("invalid reference name") ) // ReferenceType reference type's @@ -124,6 +128,91 @@ func (r ReferenceName) Short() string { return res } +var ( + ctrlSeqs = regexp.MustCompile(`[\000-\037\177]`) +) + +// Validate validates a reference name. +// This follows the git-check-ref-format rules. +// See https://git-scm.com/docs/git-check-ref-format +// +// It is important to note that this function does not check if the reference +// exists in the repository. +// It only checks if the reference name is valid. +// This functions does not support the --refspec-pattern, --normalize, and +// --allow-onelevel options. +// +// Git imposes the following rules on how references are named: +// +// 1. They can include slash / for hierarchical (directory) grouping, but no +// slash-separated component can begin with a dot . or end with the +// sequence .lock. +// 2. They must contain at least one /. This enforces the presence of a +// category like heads/, tags/ etc. but the actual names are not +// restricted. If the --allow-onelevel option is used, this rule is +// waived. +// 3. They cannot have two consecutive dots .. anywhere. +// 4. They cannot have ASCII control characters (i.e. bytes whose values are +// lower than \040, or \177 DEL), space, tilde ~, caret ^, or colon : +// anywhere. +// 5. They cannot have question-mark ?, asterisk *, or open bracket [ +// anywhere. See the --refspec-pattern option below for an exception to this +// rule. +// 6. They cannot begin or end with a slash / or contain multiple consecutive +// slashes (see the --normalize option below for an exception to this rule). +// 7. They cannot end with a dot .. +// 8. They cannot contain a sequence @{. +// 9. They cannot be the single character @. +// 10. They cannot contain a \. +func (r ReferenceName) Validate() error { + s := string(r) + if len(s) == 0 { + return ErrInvalidReferenceName + } + + // HEAD is a special case + if r == HEAD { + return nil + } + + // rule 7 + if strings.HasSuffix(s, ".") { + return ErrInvalidReferenceName + } + + // rule 2 + parts := strings.Split(s, "/") + if len(parts) < 2 { + return ErrInvalidReferenceName + } + + isBranch := r.IsBranch() + isTag := r.IsTag() + for _, part := range parts { + // rule 6 + if len(part) == 0 { + return ErrInvalidReferenceName + } + + if strings.HasPrefix(part, ".") || // rule 1 + strings.Contains(part, "..") || // rule 3 + ctrlSeqs.MatchString(part) || // rule 4 + strings.ContainsAny(part, "~^:?*[ \t\n") || // rule 4 & 5 + strings.Contains(part, "@{") || // rule 8 + part == "@" || // rule 9 + strings.Contains(part, "\\") || // rule 10 + strings.HasSuffix(part, ".lock") { // rule 1 + return ErrInvalidReferenceName + } + + if (isBranch || isTag) && strings.HasPrefix(part, "-") { // branches & tags can't start with - + return ErrInvalidReferenceName + } + } + + return nil +} + const ( HEAD ReferenceName = "HEAD" Master ReferenceName = "refs/heads/master" diff --git a/vendor/github.com/go-git/go-git/v5/remote.go b/vendor/github.com/go-git/go-git/v5/remote.go index 8ca9b10..0cb70bc 100644 --- a/vendor/github.com/go-git/go-git/v5/remote.go +++ b/vendor/github.com/go-git/go-git/v5/remote.go @@ -1070,7 +1070,7 @@ func checkFastForwardUpdate(s storer.EncodedObjectStorer, remoteRefs storer.Refe return fmt.Errorf("non-fast-forward update: %s", cmd.Name.String()) } - ff, err := isFastForward(s, cmd.Old, cmd.New) + ff, err := isFastForward(s, cmd.Old, cmd.New, nil) if err != nil { return err } @@ -1082,14 +1082,28 @@ func checkFastForwardUpdate(s storer.EncodedObjectStorer, remoteRefs storer.Refe return nil } -func isFastForward(s storer.EncodedObjectStorer, old, new plumbing.Hash) (bool, error) { +func isFastForward(s storer.EncodedObjectStorer, old, new plumbing.Hash, earliestShallow *plumbing.Hash) (bool, error) { c, err := object.GetCommit(s, new) if err != nil { return false, err } + parentsToIgnore := []plumbing.Hash{} + if earliestShallow != nil { + earliestCommit, err := object.GetCommit(s, *earliestShallow) + if err != nil { + return false, err + } + + parentsToIgnore = earliestCommit.ParentHashes + } + found := false - iter := object.NewCommitPreorderIter(c, nil, nil) + // stop iterating at the earlist shallow commit, ignoring its parents + // note: when pull depth is smaller than the number of new changes on the remote, this fails due to missing parents. + // as far as i can tell, without the commits in-between the shallow pull and the earliest shallow, there's no + // real way of telling whether it will be a fast-forward merge. + iter := object.NewCommitPreorderIter(c, nil, parentsToIgnore) err = iter.ForEach(func(c *object.Commit) error { if c.Hash != old { return nil @@ -1205,7 +1219,7 @@ func (r *Remote) updateLocalReferenceStorage( // If the ref exists locally as a non-tag and force is not // specified, only update if the new ref is an ancestor of the old if old != nil && !old.Name().IsTag() && !force && !spec.IsForceUpdate() { - ff, err := isFastForward(r.s, old.Hash(), new.Hash()) + ff, err := isFastForward(r.s, old.Hash(), new.Hash(), nil) if err != nil { return updated, err } @@ -1390,7 +1404,6 @@ func pushHashes( useRefDeltas bool, allDelete bool, ) (*packp.ReportStatus, error) { - rd, wr := io.Pipe() config, err := s.Config() diff --git a/vendor/github.com/go-git/go-git/v5/repository.go b/vendor/github.com/go-git/go-git/v5/repository.go index 4898838..1524a69 100644 --- a/vendor/github.com/go-git/go-git/v5/repository.go +++ b/vendor/github.com/go-git/go-git/v5/repository.go @@ -98,6 +98,10 @@ func InitWithOptions(s storage.Storer, worktree billy.Filesystem, options InitOp options.DefaultBranch = plumbing.Master } + if err := options.DefaultBranch.Validate(); err != nil { + return nil, err + } + r := newRepository(s, worktree) _, err := r.Reference(plumbing.HEAD, false) switch err { @@ -724,7 +728,10 @@ func (r *Repository) DeleteBranch(name string) error { // CreateTag creates a tag. If opts is included, the tag is an annotated tag, // otherwise a lightweight tag is created. func (r *Repository) CreateTag(name string, hash plumbing.Hash, opts *CreateTagOptions) (*plumbing.Reference, error) { - rname := plumbing.ReferenceName(path.Join("refs", "tags", name)) + rname := plumbing.NewTagReferenceName(name) + if err := rname.Validate(); err != nil { + return nil, err + } _, err := r.Storer.Reference(rname) switch err { diff --git a/vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/dotgit.go b/vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/dotgit.go index 3080e4a..31c4694 100644 --- a/vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/dotgit.go +++ b/vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/dotgit.go @@ -10,18 +10,19 @@ import ( "os" "path" "path/filepath" + "reflect" "runtime" "sort" "strings" "time" - "github.com/go-git/go-billy/v5/osfs" "github.com/go-git/go-git/v5/plumbing" "github.com/go-git/go-git/v5/plumbing/hash" "github.com/go-git/go-git/v5/storage" "github.com/go-git/go-git/v5/utils/ioutil" "github.com/go-git/go-billy/v5" + "github.com/go-git/go-billy/v5/helper/chroot" ) const ( @@ -81,6 +82,10 @@ type Options struct { // KeepDescriptors makes the file descriptors to be reused but they will // need to be manually closed calling Close(). KeepDescriptors bool + // AlternatesFS provides the billy filesystem to be used for Git Alternates. + // If none is provided, it falls back to using the underlying instance used for + // DotGit. + AlternatesFS billy.Filesystem } // The DotGit type represents a local git repository on disk. This @@ -1146,28 +1151,55 @@ func (d *DotGit) Alternates() ([]*DotGit, error) { } defer f.Close() + fs := d.options.AlternatesFS + if fs == nil { + fs = d.fs + } + var alternates []*DotGit + seen := make(map[string]struct{}) // Read alternate paths line-by-line and create DotGit objects. scanner := bufio.NewScanner(f) for scanner.Scan() { path := scanner.Text() - if !filepath.IsAbs(path) { - // For relative paths, we can perform an internal conversion to - // slash so that they work cross-platform. - slashPath := filepath.ToSlash(path) - // If the path is not absolute, it must be relative to object - // database (.git/objects/info). - // https://www.kernel.org/pub/software/scm/git/docs/gitrepository-layout.html - // Hence, derive a path relative to DotGit's root. - // "../../../reponame/.git/" -> "../../reponame/.git" - // Remove the first ../ - relpath := filepath.Join(strings.Split(slashPath, "/")[1:]...) - normalPath := filepath.FromSlash(relpath) - path = filepath.Join(d.fs.Root(), normalPath) + + // Avoid creating multiple dotgits for the same alternative path. + if _, ok := seen[path]; ok { + continue + } + + seen[path] = struct{}{} + + if filepath.IsAbs(path) { + // Handling absolute paths should be straight-forward. However, the default osfs (Chroot) + // tries to concatenate an abs path with the root path in some operations (e.g. Stat), + // which leads to unexpected errors. Therefore, make the path relative to the current FS instead. + if reflect.TypeOf(fs) == reflect.TypeOf(&chroot.ChrootHelper{}) { + path, err = filepath.Rel(fs.Root(), path) + if err != nil { + return nil, fmt.Errorf("cannot make path %q relative: %w", path, err) + } + } + } else { + // By Git conventions, relative paths should be based on the object database (.git/objects/info) + // location as per: https://www.kernel.org/pub/software/scm/git/docs/gitrepository-layout.html + // However, due to the nature of go-git and its filesystem handling via Billy, paths cannot + // cross its "chroot boundaries". Therefore, ignore any "../" and treat the path from the + // fs root. If this is not correct based on the dotgit fs, set a different one via AlternatesFS. + abs := filepath.Join(string(filepath.Separator), filepath.ToSlash(path)) + path = filepath.FromSlash(abs) + } + + // Aligns with upstream behavior: exit if target path is not a valid directory. + if fi, err := fs.Stat(path); err != nil || !fi.IsDir() { + return nil, fmt.Errorf("invalid object directory %q: %w", path, err) + } + afs, err := fs.Chroot(filepath.Dir(path)) + if err != nil { + return nil, fmt.Errorf("cannot chroot %q: %w", path, err) } - fs := osfs.New(filepath.Dir(path)) - alternates = append(alternates, New(fs)) + alternates = append(alternates, New(afs)) } if err = scanner.Err(); err != nil { diff --git a/vendor/github.com/go-git/go-git/v5/storage/filesystem/storage.go b/vendor/github.com/go-git/go-git/v5/storage/filesystem/storage.go index 2069d3a..951ea00 100644 --- a/vendor/github.com/go-git/go-git/v5/storage/filesystem/storage.go +++ b/vendor/github.com/go-git/go-git/v5/storage/filesystem/storage.go @@ -37,6 +37,10 @@ type Options struct { // LargeObjectThreshold maximum object size (in bytes) that will be read in to memory. // If left unset or set to 0 there is no limit LargeObjectThreshold int64 + // AlternatesFS provides the billy filesystem to be used for Git Alternates. + // If none is provided, it falls back to using the underlying instance used for + // DotGit. + AlternatesFS billy.Filesystem } // NewStorage returns a new Storage backed by a given `fs.Filesystem` and cache. @@ -49,6 +53,7 @@ func NewStorage(fs billy.Filesystem, cache cache.Object) *Storage { func NewStorageWithOptions(fs billy.Filesystem, cache cache.Object, ops Options) *Storage { dirOps := dotgit.Options{ ExclusiveAccess: ops.ExclusiveAccess, + AlternatesFS: ops.AlternatesFS, } dir := dotgit.NewWithOptions(fs, dirOps) diff --git a/vendor/github.com/go-git/go-git/v5/worktree.go b/vendor/github.com/go-git/go-git/v5/worktree.go index f8b854d..ad525c1 100644 --- a/vendor/github.com/go-git/go-git/v5/worktree.go +++ b/vendor/github.com/go-git/go-git/v5/worktree.go @@ -7,6 +7,7 @@ import ( "io" "os" "path/filepath" + "runtime" "strings" "github.com/go-git/go-billy/v5" @@ -95,7 +96,15 @@ func (w *Worktree) PullContext(ctx context.Context, o *PullOptions) error { head, err := w.r.Head() if err == nil { - headAheadOfRef, err := isFastForward(w.r.Storer, ref.Hash(), head.Hash()) + // if we don't have a shallows list, just ignore it + shallowList, _ := w.r.Storer.Shallow() + + var earliestShallow *plumbing.Hash + if len(shallowList) > 0 { + earliestShallow = &shallowList[0] + } + + headAheadOfRef, err := isFastForward(w.r.Storer, ref.Hash(), head.Hash(), earliestShallow) if err != nil { return err } @@ -104,7 +113,7 @@ func (w *Worktree) PullContext(ctx context.Context, o *PullOptions) error { return NoErrAlreadyUpToDate } - ff, err := isFastForward(w.r.Storer, head.Hash(), ref.Hash()) + ff, err := isFastForward(w.r.Storer, head.Hash(), ref.Hash(), earliestShallow) if err != nil { return err } @@ -188,7 +197,12 @@ func (w *Worktree) Checkout(opts *CheckoutOptions) error { return w.Reset(ro) } + func (w *Worktree) createBranch(opts *CheckoutOptions) error { + if err := opts.Branch.Validate(); err != nil { + return err + } + _, err := w.r.Storer.Reference(opts.Branch) if err == nil { return fmt.Errorf("a branch named %q already exists", opts.Branch) @@ -381,6 +395,9 @@ func (w *Worktree) resetWorktree(t *object.Tree) error { b := newIndexBuilder(idx) for _, ch := range changes { + if err := w.validChange(ch); err != nil { + return err + } if err := w.checkoutChange(ch, t, b); err != nil { return err } @@ -390,6 +407,104 @@ func (w *Worktree) resetWorktree(t *object.Tree) error { return w.r.Storer.SetIndex(idx) } +// worktreeDeny is a list of paths that are not allowed +// to be used when resetting the worktree. +var worktreeDeny = map[string]struct{}{ + // .git + GitDirName: {}, + + // For other historical reasons, file names that do not conform to the 8.3 + // format (up to eight characters for the basename, three for the file + // extension, certain characters not allowed such as `+`, etc) are associated + // with a so-called "short name", at least on the `C:` drive by default. + // Which means that `git~1/` is a valid way to refer to `.git/`. + "git~1": {}, +} + +// validPath checks whether paths are valid. +// The rules around invalid paths could differ from upstream based on how +// filesystems are managed within go-git, but they are largely the same. +// +// For upstream rules: +// https://github.com/git/git/blob/564d0252ca632e0264ed670534a51d18a689ef5d/read-cache.c#L946 +// https://github.com/git/git/blob/564d0252ca632e0264ed670534a51d18a689ef5d/path.c#L1383 +func validPath(paths ...string) error { + for _, p := range paths { + parts := strings.FieldsFunc(p, func(r rune) bool { return (r == '\\' || r == '/') }) + if _, denied := worktreeDeny[strings.ToLower(parts[0])]; denied { + return fmt.Errorf("invalid path prefix: %q", p) + } + + if runtime.GOOS == "windows" { + // Volume names are not supported, in both formats: \\ and :. + if vol := filepath.VolumeName(p); vol != "" { + return fmt.Errorf("invalid path: %q", p) + } + + if !windowsValidPath(parts[0]) { + return fmt.Errorf("invalid path: %q", p) + } + } + + for _, part := range parts { + if part == ".." { + return fmt.Errorf("invalid path %q: cannot use '..'", p) + } + } + } + return nil +} + +// windowsPathReplacer defines the chars that need to be replaced +// as part of windowsValidPath. +var windowsPathReplacer *strings.Replacer + +func init() { + windowsPathReplacer = strings.NewReplacer(" ", "", ".", "") +} + +func windowsValidPath(part string) bool { + if len(part) > 3 && strings.EqualFold(part[:4], GitDirName) { + // For historical reasons, file names that end in spaces or periods are + // automatically trimmed. Therefore, `.git . . ./` is a valid way to refer + // to `.git/`. + if windowsPathReplacer.Replace(part[4:]) == "" { + return false + } + + // For yet other historical reasons, NTFS supports so-called "Alternate Data + // Streams", i.e. metadata associated with a given file, referred to via + // `::`. There exists a default stream + // type for directories, allowing `.git/` to be accessed via + // `.git::$INDEX_ALLOCATION/`. + // + // For performance reasons, _all_ Alternate Data Streams of `.git/` are + // forbidden, not just `::$INDEX_ALLOCATION`. + if len(part) > 4 && part[4:5] == ":" { + return false + } + } + return true +} + +func (w *Worktree) validChange(ch merkletrie.Change) error { + action, err := ch.Action() + if err != nil { + return nil + } + + switch action { + case merkletrie.Delete: + return validPath(ch.From.String()) + case merkletrie.Insert: + return validPath(ch.To.String()) + case merkletrie.Modify: + return validPath(ch.From.String(), ch.To.String()) + } + + return nil +} + func (w *Worktree) checkoutChange(ch merkletrie.Change, t *object.Tree, idx *indexBuilder) error { a, err := ch.Action() if err != nil { @@ -562,6 +677,11 @@ func (w *Worktree) checkoutFile(f *object.File) (err error) { } func (w *Worktree) checkoutFileSymlink(f *object.File) (err error) { + // https://github.com/git/git/commit/10ecfa76491e4923988337b2e2243b05376b40de + if strings.EqualFold(f.Name, gitmodulesFile) { + return ErrGitModulesSymlink + } + from, err := f.Reader() if err != nil { return diff --git a/vendor/modules.txt b/vendor/modules.txt index 8bfc218..d550463 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -71,7 +71,7 @@ github.com/go-git/go-billy/v5/helper/polyfill github.com/go-git/go-billy/v5/memfs github.com/go-git/go-billy/v5/osfs github.com/go-git/go-billy/v5/util -# github.com/go-git/go-git/v5 v5.10.1 +# github.com/go-git/go-git/v5 v5.11.0 ## explicit; go 1.19 github.com/go-git/go-git/v5 github.com/go-git/go-git/v5/config