mirror of
https://github.com/go-gitea/gitea.git
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Adds a feature [like GitHub has](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request-from-a-fork) (step 7). If you create a new PR from a forked repo, you can select (and change later, but only if you are the PR creator/poster) the "Allow edits from maintainers" option. Then users with write access to the base branch get more permissions on this branch: * use the update pull request button * push directly from the command line (`git push`) * edit/delete/upload files via web UI * use related API endpoints You can't merge PRs to this branch with this enabled, you'll need "full" code write permissions. This feature has a pretty big impact on the permission system. I might forgot changing some things or didn't find security vulnerabilities. In this case, please leave a review or comment on this PR. Closes #17728 Co-authored-by: 6543 <6543@obermui.de>
162 lines
4.4 KiB
Go
162 lines
4.4 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package pull
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import (
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"context"
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"fmt"
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"code.gitea.io/gitea/models"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/models/unit"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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)
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// Update updates pull request with base branch.
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func Update(ctx context.Context, pull *models.PullRequest, doer *user_model.User, message string, rebase bool) error {
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var (
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pr *models.PullRequest
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style repo_model.MergeStyle
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)
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if rebase {
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pr = pull
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style = repo_model.MergeStyleRebaseUpdate
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} else {
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// use merge functions but switch repo's and branch's
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pr = &models.PullRequest{
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HeadRepoID: pull.BaseRepoID,
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BaseRepoID: pull.HeadRepoID,
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HeadBranch: pull.BaseBranch,
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BaseBranch: pull.HeadBranch,
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}
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style = repo_model.MergeStyleMerge
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}
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if pull.Flow == models.PullRequestFlowAGit {
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// TODO: Not support update agit flow pull request's head branch
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return fmt.Errorf("Not support update agit flow pull request's head branch")
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}
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if err := pr.LoadHeadRepoCtx(ctx); err != nil {
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log.Error("LoadHeadRepo: %v", err)
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return fmt.Errorf("LoadHeadRepo: %v", err)
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} else if err = pr.LoadBaseRepoCtx(ctx); err != nil {
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log.Error("LoadBaseRepo: %v", err)
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return fmt.Errorf("LoadBaseRepo: %v", err)
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}
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diffCount, err := GetDiverging(ctx, pull)
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if err != nil {
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return err
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} else if diffCount.Behind == 0 {
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return fmt.Errorf("HeadBranch of PR %d is up to date", pull.Index)
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}
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_, err = rawMerge(ctx, pr, doer, style, "", message)
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defer func() {
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if rebase {
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go AddTestPullRequestTask(doer, pr.BaseRepo.ID, pr.BaseBranch, false, "", "")
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return
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}
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go AddTestPullRequestTask(doer, pr.HeadRepo.ID, pr.HeadBranch, false, "", "")
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}()
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return err
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}
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// IsUserAllowedToUpdate check if user is allowed to update PR with given permissions and branch protections
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func IsUserAllowedToUpdate(ctx context.Context, pull *models.PullRequest, user *user_model.User) (mergeAllowed, rebaseAllowed bool, err error) {
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if pull.Flow == models.PullRequestFlowAGit {
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return false, false, nil
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}
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if user == nil {
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return false, false, nil
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}
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headRepoPerm, err := models.GetUserRepoPermission(ctx, pull.HeadRepo, user)
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if err != nil {
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return false, false, err
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}
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pr := &models.PullRequest{
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HeadRepoID: pull.BaseRepoID,
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BaseRepoID: pull.HeadRepoID,
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HeadBranch: pull.BaseBranch,
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BaseBranch: pull.HeadBranch,
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}
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err = pr.LoadProtectedBranch()
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if err != nil {
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return false, false, err
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}
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// can't do rebase on protected branch because need force push
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if pr.ProtectedBranch == nil {
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prUnit, err := pr.BaseRepo.GetUnit(unit.TypePullRequests)
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if err != nil {
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log.Error("pr.BaseRepo.GetUnit(unit.TypePullRequests): %v", err)
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return false, false, err
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}
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rebaseAllowed = prUnit.PullRequestsConfig().AllowRebaseUpdate
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}
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// Update function need push permission
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if pr.ProtectedBranch != nil && !pr.ProtectedBranch.CanUserPush(user.ID) {
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return false, false, nil
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}
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baseRepoPerm, err := models.GetUserRepoPermission(ctx, pull.BaseRepo, user)
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if err != nil {
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return false, false, err
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}
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mergeAllowed, err = IsUserAllowedToMerge(pr, headRepoPerm, user)
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if err != nil {
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return false, false, err
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}
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if pull.AllowMaintainerEdit {
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mergeAllowedMaintainer, err := IsUserAllowedToMerge(pr, baseRepoPerm, user)
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if err != nil {
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return false, false, err
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}
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mergeAllowed = mergeAllowed || mergeAllowedMaintainer
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}
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return mergeAllowed, rebaseAllowed, nil
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}
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// GetDiverging determines how many commits a PR is ahead or behind the PR base branch
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func GetDiverging(ctx context.Context, pr *models.PullRequest) (*git.DivergeObject, error) {
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log.Trace("GetDiverging[%d]: compare commits", pr.ID)
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if err := pr.LoadBaseRepoCtx(ctx); err != nil {
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return nil, err
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}
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if err := pr.LoadHeadRepoCtx(ctx); err != nil {
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return nil, err
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}
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tmpRepo, err := createTemporaryRepo(ctx, pr)
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if err != nil {
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if !models.IsErrBranchDoesNotExist(err) {
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log.Error("CreateTemporaryRepo: %v", err)
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}
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return nil, err
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}
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defer func() {
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if err := models.RemoveTemporaryPath(tmpRepo); err != nil {
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log.Error("Merge: RemoveTemporaryPath: %s", err)
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}
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}()
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diff, err := git.GetDivergingCommits(ctx, tmpRepo, "base", "tracking")
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return &diff, err
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}
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