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Use a sentinel error when blocking paths for RepositoriesServices.GetContents #2837

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merged 1 commit into from
Jul 21, 2023
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Use a sentinel error when blocking paths for RepositoriesServices.GetContents #2837

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4 changes: 3 additions & 1 deletion github/repos_contents.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@ import (
"strings"
)

var ErrPathForbidden = errors.New("path must not contain '..' due to auth vulnerability issue")

// RepositoryContent represents a file or directory in a github repository.
type RepositoryContent struct {
Type *string `json:"type,omitempty"`
Expand Down Expand Up @@ -198,7 +200,7 @@ func (s *RepositoriesService) DownloadContentsWithMeta(ctx context.Context, owne
// GitHub API docs: https://docs.github.com/en/rest/repos/contents#get-repository-content
func (s *RepositoriesService) GetContents(ctx context.Context, owner, repo, path string, opts *RepositoryContentGetOptions) (fileContent *RepositoryContent, directoryContent []*RepositoryContent, resp *Response, err error) {
if strings.Contains(path, "..") {
return nil, nil, nil, errors.New("path must not contain '..' due to auth vulnerability issue")
return nil, nil, nil, ErrPathForbidden
}

escapedPath := (&url.URL{Path: strings.TrimSuffix(path, "/")}).String()
Expand Down
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