// Copyright 2022 The Gitea Authors. All rights reserved. // SPDX-License-Identifier: MIT package actions import ( "bytes" "context" "fmt" "slices" "strings" actions_model "code.gitea.io/gitea/models/actions" "code.gitea.io/gitea/models/db" issues_model "code.gitea.io/gitea/models/issues" packages_model "code.gitea.io/gitea/models/packages" access_model "code.gitea.io/gitea/models/perm/access" repo_model "code.gitea.io/gitea/models/repo" unit_model "code.gitea.io/gitea/models/unit" user_model "code.gitea.io/gitea/models/user" actions_module "code.gitea.io/gitea/modules/actions" "code.gitea.io/gitea/modules/git" "code.gitea.io/gitea/modules/gitrepo" "code.gitea.io/gitea/modules/json" "code.gitea.io/gitea/modules/log" "code.gitea.io/gitea/modules/setting" api "code.gitea.io/gitea/modules/structs" webhook_module "code.gitea.io/gitea/modules/webhook" "code.gitea.io/gitea/services/convert" "github.com/nektos/act/pkg/jobparser" "github.com/nektos/act/pkg/model" ) var methodCtxKey struct{} // withMethod sets the notification method that this context currently executes. // Used for debugging/ troubleshooting purposes. func withMethod(ctx context.Context, method string) context.Context { // don't overwrite if v := ctx.Value(methodCtxKey); v != nil { if _, ok := v.(string); ok { return ctx } } return context.WithValue(ctx, methodCtxKey, method) } // getMethod gets the notification method that this context currently executes. // Default: "notify" // Used for debugging/ troubleshooting purposes. func getMethod(ctx context.Context) string { if v := ctx.Value(methodCtxKey); v != nil { if s, ok := v.(string); ok { return s } } return "notify" } type notifyInput struct { // required Repo *repo_model.Repository Doer *user_model.User Event webhook_module.HookEventType // optional Ref string Payload api.Payloader PullRequest *issues_model.PullRequest } func newNotifyInput(repo *repo_model.Repository, doer *user_model.User, event webhook_module.HookEventType) *notifyInput { return ¬ifyInput{ Repo: repo, Doer: doer, Event: event, } } func (input *notifyInput) WithDoer(doer *user_model.User) *notifyInput { input.Doer = doer return input } func (input *notifyInput) WithRef(ref string) *notifyInput { input.Ref = ref return input } func (input *notifyInput) WithPayload(payload api.Payloader) *notifyInput { input.Payload = payload return input } func (input *notifyInput) WithPullRequest(pr *issues_model.PullRequest) *notifyInput { input.PullRequest = pr if input.Ref == "" { input.Ref = pr.GetGitRefName() } return input } func (input *notifyInput) Notify(ctx context.Context) { log.Trace("execute %v for event %v whose doer is %v", getMethod(ctx), input.Event, input.Doer.Name) if err := notify(ctx, input); err != nil { log.Error("an error occurred while executing the %s actions method: %v", getMethod(ctx), err) } } func notify(ctx context.Context, input *notifyInput) error { if input.Doer.IsActions() { // avoiding triggering cyclically, for example: // a comment of an issue will trigger the runner to add a new comment as reply, // and the new comment will trigger the runner again. log.Debug("ignore executing %v for event %v whose doer is %v", getMethod(ctx), input.Event, input.Doer.Name) return nil } if input.Repo.IsEmpty { return nil } if unit_model.TypeActions.UnitGlobalDisabled() { return nil } if err := input.Repo.LoadUnits(ctx); err != nil { return fmt.Errorf("repo.LoadUnits: %w", err) } else if !input.Repo.UnitEnabled(ctx, unit_model.TypeActions) { return nil } gitRepo, err := gitrepo.OpenRepository(context.Background(), input.Repo) if err != nil { return fmt.Errorf("git.OpenRepository: %w", err) } defer gitRepo.Close() ref := input.Ref if ref != input.Repo.DefaultBranch && actions_module.IsDefaultBranchWorkflow(input.Event) { if ref != "" { log.Warn("Event %q should only trigger workflows on the default branch, but its ref is %q. Will fall back to the default branch", input.Event, ref) } ref = input.Repo.DefaultBranch } if ref == "" { log.Warn("Ref of event %q is empty, will fall back to the default branch", input.Event) ref = input.Repo.DefaultBranch } // Get the commit object for the ref commit, err := gitRepo.GetCommit(ref) if err != nil { return fmt.Errorf("gitRepo.GetCommit: %w", err) } if skipWorkflowsForCommit(input, commit) { return nil } if SkipPullRequestEvent(ctx, input.Event, input.Repo.ID, commit.ID.String()) { log.Trace("repo %s with commit %s skip event %v", input.Repo.RepoPath(), commit.ID, input.Event) return nil } var detectedWorkflows []*actions_module.DetectedWorkflow actionsConfig := input.Repo.MustGetUnit(ctx, unit_model.TypeActions).ActionsConfig() workflows, schedules, err := actions_module.DetectWorkflows(gitRepo, commit, input.Event, input.Payload) if err != nil { return fmt.Errorf("DetectWorkflows: %w", err) } if len(workflows) == 0 { log.Trace("repo %s with commit %s couldn't find workflows", input.Repo.RepoPath(), commit.ID) } else { for _, wf := range workflows { if actionsConfig.IsWorkflowDisabled(wf.EntryName) { log.Trace("repo %s has disable workflows %s", input.Repo.RepoPath(), wf.EntryName) continue } if wf.TriggerEvent != actions_module.GithubEventPullRequestTarget { detectedWorkflows = append(detectedWorkflows, wf) } } } if input.PullRequest != nil { // detect pull_request_target workflows baseRef := git.BranchPrefix + input.PullRequest.BaseBranch baseCommit, err := gitRepo.GetCommit(baseRef) if err != nil { return fmt.Errorf("gitRepo.GetCommit: %w", err) } baseWorkflows, _, err := actions_module.DetectWorkflows(gitRepo, baseCommit, input.Event, input.Payload) if err != nil { return fmt.Errorf("DetectWorkflows: %w", err) } if len(baseWorkflows) == 0 { log.Trace("repo %s with commit %s couldn't find pull_request_target workflows", input.Repo.RepoPath(), baseCommit.ID) } else { for _, wf := range baseWorkflows { if wf.TriggerEvent == actions_module.GithubEventPullRequestTarget { detectedWorkflows = append(detectedWorkflows, wf) } } } } if err := handleSchedules(ctx, schedules, commit, input, ref); err != nil { return err } return handleWorkflows(ctx, detectedWorkflows, commit, input, ref) } func SkipPullRequestEvent(ctx context.Context, event webhook_module.HookEventType, repoID int64, commitSHA string) bool { if event != webhook_module.HookEventPullRequestSync { return false } run := actions_model.ActionRun{ Event: webhook_module.HookEventPullRequest, RepoID: repoID, CommitSHA: commitSHA, } exist, err := db.GetEngine(ctx).Exist(&run) if err != nil { log.Error("Exist ActionRun %v: %v", run, err) return false } return exist } func skipWorkflowsForCommit(input *notifyInput, commit *git.Commit) bool { // skip workflow runs with a configured skip-ci string in commit message if the event is push or pull_request(_sync) // https://docs.github.com/en/actions/managing-workflow-runs/skipping-workflow-runs skipWorkflowEvents := []webhook_module.HookEventType{ webhook_module.HookEventPush, webhook_module.HookEventPullRequest, webhook_module.HookEventPullRequestSync, } if slices.Contains(skipWorkflowEvents, input.Event) { for _, s := range setting.Actions.SkipWorkflowStrings { if strings.Contains(commit.CommitMessage, s) { log.Debug("repo %s with commit %s: skipped run because of %s string", input.Repo.RepoPath(), commit.ID, s) return true } } } return false } func handleWorkflows( ctx context.Context, detectedWorkflows []*actions_module.DetectedWorkflow, commit *git.Commit, input *notifyInput, ref string, ) error { if len(detectedWorkflows) == 0 { log.Trace("repo %s with commit %s couldn't find workflows", input.Repo.RepoPath(), commit.ID) return nil } p, err := json.Marshal(input.Payload) if err != nil { return fmt.Errorf("json.Marshal: %w", err) } isForkPullRequest := false if pr := input.PullRequest; pr != nil { switch pr.Flow { case issues_model.PullRequestFlowGithub: isForkPullRequest = pr.IsFromFork() case issues_model.PullRequestFlowAGit: // There is no fork concept in agit flow, anyone with read permission can push refs/for/<target-branch>/<topic-branch> to the repo. // So we can treat it as a fork pull request because it may be from an untrusted user isForkPullRequest = true default: // unknown flow, assume it's a fork pull request to be safe isForkPullRequest = true } } for _, dwf := range detectedWorkflows { run := &actions_model.ActionRun{ Title: strings.SplitN(commit.CommitMessage, "\n", 2)[0], RepoID: input.Repo.ID, OwnerID: input.Repo.OwnerID, WorkflowID: dwf.EntryName, TriggerUserID: input.Doer.ID, Ref: ref, CommitSHA: commit.ID.String(), IsForkPullRequest: isForkPullRequest, Event: input.Event, EventPayload: string(p), TriggerEvent: dwf.TriggerEvent, Status: actions_model.StatusWaiting, } if need, err := ifNeedApproval(ctx, run, input.Repo, input.Doer); err != nil { log.Error("check if need approval for repo %d with user %d: %v", input.Repo.ID, input.Doer.ID, err) continue } else { run.NeedApproval = need } if err := run.LoadAttributes(ctx); err != nil { log.Error("LoadAttributes: %v", err) continue } vars, err := actions_model.GetVariablesOfRun(ctx, run) if err != nil { log.Error("GetVariablesOfRun: %v", err) continue } jobs, err := jobparser.Parse(dwf.Content, jobparser.WithVars(vars)) if err != nil { log.Error("jobparser.Parse: %v", err) continue } // cancel running jobs if the event is push if run.Event == webhook_module.HookEventPush { // cancel running jobs of the same workflow if err := actions_model.CancelRunningJobs( ctx, run.RepoID, run.Ref, run.WorkflowID, ); err != nil { log.Error("CancelRunningJobs: %v", err) } } if err := actions_model.InsertRun(ctx, run, jobs); err != nil { log.Error("InsertRun: %v", err) continue } alljobs, err := db.Find[actions_model.ActionRunJob](ctx, actions_model.FindRunJobOptions{RunID: run.ID}) if err != nil { log.Error("FindRunJobs: %v", err) continue } CreateCommitStatus(ctx, alljobs...) } return nil } func newNotifyInputFromIssue(issue *issues_model.Issue, event webhook_module.HookEventType) *notifyInput { return newNotifyInput(issue.Repo, issue.Poster, event) } func notifyRelease(ctx context.Context, doer *user_model.User, rel *repo_model.Release, action api.HookReleaseAction) { if err := rel.LoadAttributes(ctx); err != nil { log.Error("LoadAttributes: %v", err) return } permission, _ := access_model.GetUserRepoPermission(ctx, rel.Repo, doer) newNotifyInput(rel.Repo, doer, webhook_module.HookEventRelease). WithRef(git.RefNameFromTag(rel.TagName).String()). WithPayload(&api.ReleasePayload{ Action: action, Release: convert.ToAPIRelease(ctx, rel.Repo, rel), Repository: convert.ToRepo(ctx, rel.Repo, permission), Sender: convert.ToUser(ctx, doer, nil), }). Notify(ctx) } func notifyPackage(ctx context.Context, sender *user_model.User, pd *packages_model.PackageDescriptor, action api.HookPackageAction) { if pd.Repository == nil { // When a package is uploaded to an organization, it could trigger an event to notify. // So the repository could be nil, however, actions can't support that yet. // See https://github.com/go-gitea/gitea/pull/17940 return } apiPackage, err := convert.ToPackage(ctx, pd, sender) if err != nil { log.Error("Error converting package: %v", err) return } newNotifyInput(pd.Repository, sender, webhook_module.HookEventPackage). WithPayload(&api.PackagePayload{ Action: action, Package: apiPackage, Sender: convert.ToUser(ctx, sender, nil), }). Notify(ctx) } func ifNeedApproval(ctx context.Context, run *actions_model.ActionRun, repo *repo_model.Repository, user *user_model.User) (bool, error) { // 1. don't need approval if it's not a fork PR // 2. don't need approval if the event is `pull_request_target` since the workflow will run in the context of base branch // see https://docs.github.com/en/actions/managing-workflow-runs/approving-workflow-runs-from-public-forks#about-workflow-runs-from-public-forks if !run.IsForkPullRequest || run.TriggerEvent == actions_module.GithubEventPullRequestTarget { return false, nil } // always need approval if the user is restricted if user.IsRestricted { log.Trace("need approval because user %d is restricted", user.ID) return true, nil } // don't need approval if the user can write if perm, err := access_model.GetUserRepoPermission(ctx, repo, user); err != nil { return false, fmt.Errorf("GetUserRepoPermission: %w", err) } else if perm.CanWrite(unit_model.TypeActions) { log.Trace("do not need approval because user %d can write", user.ID) return false, nil } // don't need approval if the user has been approved before if count, err := db.Count[actions_model.ActionRun](ctx, actions_model.FindRunOptions{ RepoID: repo.ID, TriggerUserID: user.ID, Approved: true, }); err != nil { return false, fmt.Errorf("CountRuns: %w", err) } else if count > 0 { log.Trace("do not need approval because user %d has been approved before", user.ID) return false, nil } // otherwise, need approval log.Trace("need approval because it's the first time user %d triggered actions", user.ID) return true, nil } func handleSchedules( ctx context.Context, detectedWorkflows []*actions_module.DetectedWorkflow, commit *git.Commit, input *notifyInput, ref string, ) error { branch, err := commit.GetBranchName() if err != nil { return err } if branch != input.Repo.DefaultBranch { log.Trace("commit branch is not default branch in repo") return nil } if count, err := db.Count[actions_model.ActionSchedule](ctx, actions_model.FindScheduleOptions{RepoID: input.Repo.ID}); err != nil { log.Error("CountSchedules: %v", err) return err } else if count > 0 { if err := actions_model.DeleteScheduleTaskByRepo(ctx, input.Repo.ID); err != nil { log.Error("DeleteCronTaskByRepo: %v", err) } } if len(detectedWorkflows) == 0 { log.Trace("repo %s with commit %s couldn't find schedules", input.Repo.RepoPath(), commit.ID) return nil } payload := &api.SchedulePayload{ Action: api.HookScheduleCreated, } p, err := json.Marshal(payload) if err != nil { return fmt.Errorf("json.Marshal: %w", err) } crons := make([]*actions_model.ActionSchedule, 0, len(detectedWorkflows)) for _, dwf := range detectedWorkflows { // Check cron job condition. Only working in default branch workflow, err := model.ReadWorkflow(bytes.NewReader(dwf.Content)) if err != nil { log.Error("ReadWorkflow: %v", err) continue } schedules := workflow.OnSchedule() if len(schedules) == 0 { log.Warn("no schedule event") continue } run := &actions_model.ActionSchedule{ Title: strings.SplitN(commit.CommitMessage, "\n", 2)[0], RepoID: input.Repo.ID, OwnerID: input.Repo.OwnerID, WorkflowID: dwf.EntryName, TriggerUserID: input.Doer.ID, Ref: input.Repo.DefaultBranch, CommitSHA: commit.ID.String(), Event: webhook_module.HookEventType(api.HookScheduleCreated), EventPayload: string(p), Specs: schedules, Content: dwf.Content, } // cancel running jobs if the event is push if run.Event == webhook_module.HookEventPush { // cancel running jobs of the same workflow if err := actions_model.CancelRunningJobs( ctx, run.RepoID, run.Ref, run.WorkflowID, ); err != nil { log.Error("CancelRunningJobs: %v", err) } } crons = append(crons, run) } return actions_model.CreateScheduleTask(ctx, crons) }