| // Copyright 2021 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package worker |
| |
| import ( |
| "log" |
| |
| "github.com/go-git/go-git/v5" |
| "github.com/go-git/go-git/v5/plumbing" |
| "github.com/go-git/go-git/v5/plumbing/object" |
| "github.com/go-git/go-git/v5/storage/memory" |
| "golang.org/x/vuln/internal/derrors" |
| ) |
| |
| const cvelistRepoURL = "https://github.com/CVEProject/cvelist" |
| |
| // cloneRepo returns a repo and tree object for the repo at HEAD by |
| // cloning the repo at repoURL. |
| func cloneRepo(repoURL string) (repo *git.Repository, err error) { |
| defer derrors.Wrap(&err, "cloneRepo(%q)", repoURL) |
| log.Printf("Cloning %q...", cvelistRepoURL) |
| return git.Clone(memory.NewStorage(), nil, &git.CloneOptions{ |
| URL: repoURL, |
| ReferenceName: plumbing.HEAD, |
| SingleBranch: true, |
| Depth: 1, |
| Tags: git.NoTags, |
| }) |
| } |
| |
| func openRepo(dirpath string) (repo *git.Repository, err error) { |
| defer derrors.Wrap(&err, "openRepo(%q)", dirpath) |
| log.Printf("Opening %q...", dirpath) |
| repo, err = git.PlainOpen(dirpath) |
| if err != nil { |
| return nil, err |
| } |
| return repo, nil |
| } |
| |
| func getRepoRoot(repo *git.Repository) (root *object.Tree, err error) { |
| refName := plumbing.HEAD |
| ref, err := repo.Reference(refName, true) |
| if err != nil { |
| return nil, err |
| } |
| commit, err := repo.CommitObject(ref.Hash()) |
| if err != nil { |
| return nil, err |
| } |
| root, err = repo.TreeObject(commit.TreeHash) |
| if err != nil { |
| return nil, err |
| } |
| return root, nil |
| } |