diff options
Diffstat (limited to 'services/repository/files/patch.go')
| -rw-r--r-- | services/repository/files/patch.go | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/services/repository/files/patch.go b/services/repository/files/patch.go new file mode 100644 index 0000000..e5f7e2a --- /dev/null +++ b/services/repository/files/patch.go @@ -0,0 +1,199 @@ +// Copyright 2021 The Gitea Authors. All rights reserved. +// SPDX-License-Identifier: MIT + +package files + +import ( + "context" + "fmt" + "strings" + + "code.gitea.io/gitea/models" + git_model "code.gitea.io/gitea/models/git" + repo_model "code.gitea.io/gitea/models/repo" + user_model "code.gitea.io/gitea/models/user" + "code.gitea.io/gitea/modules/git" + "code.gitea.io/gitea/modules/gitrepo" + "code.gitea.io/gitea/modules/log" + "code.gitea.io/gitea/modules/structs" + asymkey_service "code.gitea.io/gitea/services/asymkey" +) + +// ApplyDiffPatchOptions holds the repository diff patch update options +type ApplyDiffPatchOptions struct { + LastCommitID string + OldBranch string + NewBranch string + Message string + Content string + SHA string + Author *IdentityOptions + Committer *IdentityOptions + Dates *CommitDateOptions + Signoff bool +} + +// Validate validates the provided options +func (opts *ApplyDiffPatchOptions) Validate(ctx context.Context, repo *repo_model.Repository, doer *user_model.User) error { + // If no branch name is set, assume master + if opts.OldBranch == "" { + opts.OldBranch = repo.DefaultBranch + } + if opts.NewBranch == "" { + opts.NewBranch = opts.OldBranch + } + + gitRepo, closer, err := gitrepo.RepositoryFromContextOrOpen(ctx, repo) + if err != nil { + return err + } + defer closer.Close() + + // oldBranch must exist for this operation + if _, err := gitRepo.GetBranch(opts.OldBranch); err != nil { + return err + } + // A NewBranch can be specified for the patch to be applied to. + // Check to make sure the branch does not already exist, otherwise we can't proceed. + // If we aren't branching to a new branch, make sure user can commit to the given branch + if opts.NewBranch != opts.OldBranch { + existingBranch, err := gitRepo.GetBranch(opts.NewBranch) + if existingBranch != nil { + return git_model.ErrBranchAlreadyExists{ + BranchName: opts.NewBranch, + } + } + if err != nil && !git.IsErrBranchNotExist(err) { + return err + } + } else { + protectedBranch, err := git_model.GetFirstMatchProtectedBranchRule(ctx, repo.ID, opts.OldBranch) + if err != nil { + return err + } + if protectedBranch != nil { + protectedBranch.Repo = repo + if !protectedBranch.CanUserPush(ctx, doer) { + return models.ErrUserCannotCommit{ + UserName: doer.LowerName, + } + } + } + if protectedBranch != nil && protectedBranch.RequireSignedCommits { + _, _, _, err := asymkey_service.SignCRUDAction(ctx, repo.RepoPath(), doer, repo.RepoPath(), opts.OldBranch) + if err != nil { + if !asymkey_service.IsErrWontSign(err) { + return err + } + return models.ErrUserCannotCommit{ + UserName: doer.LowerName, + } + } + } + } + return nil +} + +// ApplyDiffPatch applies a patch to the given repository +func ApplyDiffPatch(ctx context.Context, repo *repo_model.Repository, doer *user_model.User, opts *ApplyDiffPatchOptions) (*structs.FileResponse, error) { + err := repo.MustNotBeArchived() + if err != nil { + return nil, err + } + + if err := opts.Validate(ctx, repo, doer); err != nil { + return nil, err + } + + message := strings.TrimSpace(opts.Message) + + author, committer := GetAuthorAndCommitterUsers(opts.Author, opts.Committer, doer) + + t, err := NewTemporaryUploadRepository(ctx, repo) + if err != nil { + log.Error("NewTemporaryUploadRepository failed: %v", err) + } + defer t.Close() + if err := t.Clone(opts.OldBranch, true); err != nil { + return nil, err + } + if err := t.SetDefaultIndex(); err != nil { + return nil, err + } + + // Get the commit of the original branch + commit, err := t.GetBranchCommit(opts.OldBranch) + if err != nil { + return nil, err // Couldn't get a commit for the branch + } + + // Assigned LastCommitID in opts if it hasn't been set + if opts.LastCommitID == "" { + opts.LastCommitID = commit.ID.String() + } else { + lastCommitID, err := t.gitRepo.ConvertToGitID(opts.LastCommitID) + if err != nil { + return nil, fmt.Errorf("ApplyPatch: Invalid last commit ID: %w", err) + } + opts.LastCommitID = lastCommitID.String() + if commit.ID.String() != opts.LastCommitID { + return nil, models.ErrCommitIDDoesNotMatch{ + GivenCommitID: opts.LastCommitID, + CurrentCommitID: opts.LastCommitID, + } + } + } + + stdout := &strings.Builder{} + stderr := &strings.Builder{} + + cmdApply := git.NewCommand(ctx, "apply", "--index", "--recount", "--cached", "--ignore-whitespace", "--whitespace=fix", "--binary") + if git.CheckGitVersionAtLeast("2.32") == nil { + cmdApply.AddArguments("-3") + } + + if err := cmdApply.Run(&git.RunOpts{ + Dir: t.basePath, + Stdout: stdout, + Stderr: stderr, + Stdin: strings.NewReader(opts.Content), + }); err != nil { + return nil, fmt.Errorf("Error: Stdout: %s\nStderr: %s\nErr: %w", stdout.String(), stderr.String(), err) + } + + // Now write the tree + treeHash, err := t.WriteTree() + if err != nil { + return nil, err + } + + // Now commit the tree + var commitHash string + if opts.Dates != nil { + commitHash, err = t.CommitTreeWithDate("HEAD", author, committer, treeHash, message, opts.Signoff, opts.Dates.Author, opts.Dates.Committer) + } else { + commitHash, err = t.CommitTree("HEAD", author, committer, treeHash, message, opts.Signoff) + } + if err != nil { + return nil, err + } + + // Then push this tree to NewBranch + if err := t.Push(doer, commitHash, opts.NewBranch); err != nil { + return nil, err + } + + commit, err = t.GetCommit(commitHash) + if err != nil { + return nil, err + } + + fileCommitResponse, _ := GetFileCommitResponse(repo, commit) // ok if fails, then will be nil + verification := GetPayloadCommitVerification(ctx, commit) + fileResponse := &structs.FileResponse{ + Commit: fileCommitResponse, + Verification: verification, + } + + return fileResponse, nil +} |