Use env GITEA_RUNNER_REGISTRATION_TOKEN as global runner token (go-gitea#32946)

Fix go-gitea#23703

When Gitea starts, it reads GITEA_RUNNER_REGISTRATION_TOKEN
or GITEA_RUNNER_REGISTRATION_TOKEN_FILE to add registration token.

Author: wxiaoguang

models/actions/runner_token.go

@@ -10,6 +10,7 @@ import (
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
 )
@@ -51,7 +52,7 @@ func GetRunnerToken(ctx context.Context, token string) (*ActionRunnerToken, erro
 	if err != nil {
 		return nil, err
 	} else if !has {
-		return nil, fmt.Errorf("runner token %q: %w", token, util.ErrNotExist)
+		return nil, fmt.Errorf(`runner token "%s...": %w`, base.TruncateString(token, 3), util.ErrNotExist)
 	}
 	return &runnerToken, nil
 }
@@ -68,19 +69,15 @@ func UpdateRunnerToken(ctx context.Context, r *ActionRunnerToken, cols ...string
 	return err
 }
 
-// NewRunnerToken creates a new active runner token and invalidate all old tokens
+// NewRunnerTokenWithValue creates a new active runner token and invalidate all old tokens
 // ownerID will be ignored and treated as 0 if repoID is non-zero.
-func NewRunnerToken(ctx context.Context, ownerID, repoID int64) (*ActionRunnerToken, error) {
+func NewRunnerTokenWithValue(ctx context.Context, ownerID, repoID int64, token string) (*ActionRunnerToken, error) {
 	if ownerID != 0 && repoID != 0 {
 		// It's trying to create a runner token that belongs to a repository, but OwnerID has been set accidentally.
 		// Remove OwnerID to avoid confusion; it's not worth returning an error here.
 		ownerID = 0
 	}
 
-	token, err := util.CryptoRandomString(40)
-	if err != nil {
-		return nil, err
-	}
 	runnerToken := &ActionRunnerToken{
 		OwnerID:  ownerID,
 		RepoID:   repoID,
@@ -95,11 +92,19 @@ func NewRunnerToken(ctx context.Context, ownerID, repoID int64) (*ActionRunnerTo
 			return err
 		}
 
-		_, err = db.GetEngine(ctx).Insert(runnerToken)
+		_, err := db.GetEngine(ctx).Insert(runnerToken)
 		return err
 	})
 }
 
+func NewRunnerToken(ctx context.Context, ownerID, repoID int64) (*ActionRunnerToken, error) {
+	token, err := util.CryptoRandomString(40)
+	if err != nil {
+		return nil, err
+	}
+	return NewRunnerTokenWithValue(ctx, ownerID, repoID, token)
+}
+
 // GetLatestRunnerToken returns the latest runner token
 func GetLatestRunnerToken(ctx context.Context, ownerID, repoID int64) (*ActionRunnerToken, error) {
 	if ownerID != 0 && repoID != 0 {

options/locale/locale_en-US.ini

@@ -3722,6 +3722,7 @@ runners.status.active = Active
 runners.status.offline = Offline
 runners.version = Version
 runners.reset_registration_token = Reset registration token
+runners.reset_registration_token_confirm = Would you like to invalidate the current token and generate a new one?
 runners.reset_registration_token_success = Runner registration token reset successfully
 
 runs.all_workflows = All Workflows

routers/init.go

@@ -171,7 +171,7 @@ func InitWebInstalled(ctx context.Context) {
 	auth.Init()
 	mustInit(svg.Init)
 
-	actions_service.Init()
+	mustInitCtx(ctx, actions_service.Init)
 
 	mustInit(repo_service.InitLicenseClassifier)
 

routers/web/shared/actions/runners.go

@@ -136,9 +136,8 @@ func RunnerResetRegistrationToken(ctx *context.Context, ownerID, repoID int64, r
 		ctx.ServerError("ResetRunnerRegistrationToken", err)
 		return
 	}
-
 	ctx.Flash.Success(ctx.Tr("actions.runners.reset_registration_token_success"))
-	ctx.Redirect(redirectTo)
+	ctx.JSONRedirect(redirectTo)
 }
 
 // RunnerDeletePost response for deleting a runner

routers/web/web.go

@@ -463,7 +463,7 @@ func registerRoutes(m *web.Router) {
 			m.Combo("/{runnerid}").Get(repo_setting.RunnersEdit).
 				Post(web.Bind(forms.EditRunnerForm{}), repo_setting.RunnersEditPost)
 			m.Post("/{runnerid}/delete", repo_setting.RunnerDeletePost)
-			m.Get("/reset_registration_token", repo_setting.ResetRunnerRegistrationToken)
+			m.Post("/reset_registration_token", repo_setting.ResetRunnerRegistrationToken)
 		})
 	}
 

services/actions/init.go

@@ -4,23 +4,68 @@
 package actions
 
 import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+
+	actions_model "code.gitea.io/gitea/models/actions"
 	"code.gitea.io/gitea/modules/graceful"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/queue"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
 	notify_service "code.gitea.io/gitea/services/notify"
 )
 
-func Init() {
+func initGlobalRunnerToken(ctx context.Context) error {
+	// use the same env name as the runner, for consistency
+	token := os.Getenv("GITEA_RUNNER_REGISTRATION_TOKEN")
+	tokenFile := os.Getenv("GITEA_RUNNER_REGISTRATION_TOKEN_FILE")
+	if token != "" && tokenFile != "" {
+		return errors.New("both GITEA_RUNNER_REGISTRATION_TOKEN and GITEA_RUNNER_REGISTRATION_TOKEN_FILE are set, only one can be used")
+	}
+	if tokenFile != "" {
+		file, err := os.ReadFile(tokenFile)
+		if err != nil {
+			return fmt.Errorf("unable to read GITEA_RUNNER_REGISTRATION_TOKEN_FILE: %w", err)
+		}
+		token = strings.TrimSpace(string(file))
+	}
+	if token == "" {
+		return nil
+	}
+
+	if len(token) < 32 {
+		return errors.New("GITEA_RUNNER_REGISTRATION_TOKEN must be at least 32 random characters")
+	}
+
+	existing, err := actions_model.GetRunnerToken(ctx, token)
+	if err != nil && !errors.Is(err, util.ErrNotExist) {
+		return fmt.Errorf("unable to check existing token: %w", err)
+	}
+	if existing != nil {
+		if !existing.IsActive {
+			log.Warn("The token defined by GITEA_RUNNER_REGISTRATION_TOKEN is already invalidated, please use the latest one from web UI")
+		}
+		return nil
+	}
+	_, err = actions_model.NewRunnerTokenWithValue(ctx, 0, 0, token)
+	return err
+}
+
+func Init(ctx context.Context) error {
 	if !setting.Actions.Enabled {
-		return
+		return nil
 	}
 
 	jobEmitterQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "actions_ready_job", jobEmitterQueueHandler)
 	if jobEmitterQueue == nil {
-		log.Fatal("Unable to create actions_ready_job queue")
+		return errors.New("unable to create actions_ready_job queue")
 	}
 	go graceful.GetManager().RunWithCancel(jobEmitterQueue)
 
 	notify_service.RegisterNotifier(NewNotifier())
+	return initGlobalRunnerToken(ctx)
 }

services/actions/init_test.go

@@ -0,0 +1,80 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package actions
+
+import (
+	"os"
+	"testing"
+
+	actions_model "code.gitea.io/gitea/models/actions"
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+	"code.gitea.io/gitea/modules/util"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMain(m *testing.M) {
+	unittest.MainTest(m, &unittest.TestOptions{
+		FixtureFiles: []string{"action_runner_token.yml"},
+	})
+	os.Exit(m.Run())
+}
+
+func TestInitToken(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	t.Run("NoToken", func(t *testing.T) {
+		_, _ = db.Exec(db.DefaultContext, "DELETE FROM action_runner_token")
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN", "")
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN_FILE", "")
+		err := initGlobalRunnerToken(db.DefaultContext)
+		require.NoError(t, err)
+		notEmpty, err := db.IsTableNotEmpty(&actions_model.ActionRunnerToken{})
+		require.NoError(t, err)
+		assert.False(t, notEmpty)
+	})
+
+	t.Run("EnvToken", func(t *testing.T) {
+		tokenValue, _ := util.CryptoRandomString(32)
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN", tokenValue)
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN_FILE", "")
+		err := initGlobalRunnerToken(db.DefaultContext)
+		require.NoError(t, err)
+		token := unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRunnerToken{Token: tokenValue})
+		assert.True(t, token.IsActive)
+
+		// init with the same token again, should not create a new token
+		err = initGlobalRunnerToken(db.DefaultContext)
+		require.NoError(t, err)
+		token2 := unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRunnerToken{Token: tokenValue})
+		assert.Equal(t, token.ID, token2.ID)
+		assert.True(t, token.IsActive)
+	})
+
+	t.Run("EnvFileToken", func(t *testing.T) {
+		tokenValue, _ := util.CryptoRandomString(32)
+		f := t.TempDir() + "/token"
+		_ = os.WriteFile(f, []byte(tokenValue), 0o644)
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN", "")
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN_FILE", f)
+		err := initGlobalRunnerToken(db.DefaultContext)
+		require.NoError(t, err)
+		token := unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRunnerToken{Token: tokenValue})
+		assert.True(t, token.IsActive)
+
+		// if the env token is invalidated by another new token, then it shouldn't be active anymore
+		_, err = actions_model.NewRunnerToken(db.DefaultContext, 0, 0)
+		require.NoError(t, err)
+		token = unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRunnerToken{Token: tokenValue})
+		assert.False(t, token.IsActive)
+	})
+
+	t.Run("InvalidToken", func(t *testing.T) {
+		t.Setenv("GITEA_RUNNER_REGISTRATION_TOKEN", "abc")
+		err := initGlobalRunnerToken(db.DefaultContext)
+		assert.ErrorContains(t, err, "must be at least")
+	})
+}

templates/shared/actions/runner_list.tmpl

@@ -3,7 +3,7 @@
 	<h4 class="ui top attached header">
 		{{ctx.Locale.Tr "actions.runners.runner_manage_panel"}} ({{ctx.Locale.Tr "admin.total" .Total}})
 		<div class="ui right">
-			<div class="ui top right pointing dropdown">
+			<div class="ui top right pointing dropdown jump">
 				<button class="ui primary tiny button">
 					{{ctx.Locale.Tr "actions.runners.new"}}
 					{{svg "octicon-triangle-down" 14 "dropdown icon"}}
@@ -17,14 +17,18 @@
 						Registration Token
 					</div>
 					<div class="ui input">
-						<input type="text" value="{{.RegistrationToken}}">
+						<input type="text" value="{{.RegistrationToken}}" readonly>
 						<button class="ui basic label button" aria-label="{{ctx.Locale.Tr "copy"}}" data-clipboard-text="{{.RegistrationToken}}">
 							{{svg "octicon-copy" 14}}
 						</button>
 					</div>
 					<div class="divider"></div>
 					<div class="item">
-						<a href="{{$.Link}}/reset_registration_token">{{ctx.Locale.Tr "actions.runners.reset_registration_token"}}</a>
+						<a class="link-action" data-url="{{$.Link}}/reset_registration_token"
+							data-modal-confirm="{{ctx.Locale.Tr "actions.runners.reset_registration_token_confirm"}}"
+						>
+							{{ctx.Locale.Tr "actions.runners.reset_registration_token"}}
+						</a>
 					</div>
 				</div>
 			</div>