Nezha's authenticated agents can forge service-monitor results for other users' services

@@ -0,0 +1,335 @@
+package rpc
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"google.golang.org/grpc/metadata"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+
+	"github.com/nezhahq/nezha/model"
+	pb "github.com/nezhahq/nezha/proto"
+	"github.com/nezhahq/nezha/service/singleton"
+)
+
+type requestTaskSecurityStream struct {
+	ctx     context.Context
+	results []*pb.TaskResult
+	onSend  func(*pb.Task)
+	sendErr error
+}
+
+func (s *requestTaskSecurityStream) Send(task *pb.Task) error {
+	if s.onSend != nil {
+		s.onSend(task)
+	}
+	return s.sendErr
+}
+
+func (s *requestTaskSecurityStream) Recv() (*pb.TaskResult, error) {
+	if len(s.results) == 0 {
+		return nil, context.Canceled
+	}
+	result := s.results[0]
+	s.results = s.results[1:]
+	return result, nil
+}
+
+func (s *requestTaskSecurityStream) SetHeader(metadata.MD) error  { return nil }
+func (s *requestTaskSecurityStream) SendHeader(metadata.MD) error { return nil }
+func (s *requestTaskSecurityStream) SetTrailer(metadata.MD)       {}
+func (s *requestTaskSecurityStream) Context() context.Context     { return s.ctx }
+func (s *requestTaskSecurityStream) SendMsg(any) error            { return nil }
+func (s *requestTaskSecurityStream) RecvMsg(any) error            { return context.Canceled }
+
+func TestRequestTaskSkipsCronResultOwnedByAnotherUser(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "11111111-1111-1111-1111-111111111111")
+	victimCron := requestTaskSecurityCron(42, 100, model.CronCoverAll, nil)
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{victimCron}, map[uint64]model.UserInfo{
+		100: {Role: model.RoleMember},
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(victimCron.ID, true))
+
+	if cronLastResult(t, victimCron.ID) {
+		t.Fatal("foreign cron result must not update victim cron status")
+	}
+}
+
+func TestRequestTaskSkipsCronResultOutsideReporterCover(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "22222222-2222-2222-2222-222222222222")
+	coveredServerID := uint64(8)
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverIgnoreAll, []uint64{coveredServerID})
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if cronLastResult(t, cronTask.ID) {
+		t.Fatal("cron result from a server outside cron cover must not update cron status")
+	}
+}
+
+func TestRequestTaskSkipsCronCoverAllExcludedReporter(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "88888888-8888-8888-8888-888888888888")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverAll, []uint64{reporter.ID})
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if cronLastResult(t, cronTask.ID) {
+		t.Fatal("cron result from a server excluded by CronCoverAll must not update cron status")
+	}
+}
+
+func TestRequestTaskAllowsCronCoverAllReporter(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "99999999-9999-9999-9999-999999999999")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverAll, []uint64{8})
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if !cronLastResult(t, cronTask.ID) {
+		t.Fatal("CronCoverAll reporter not in the exclusion list must update cron status")
+	}
+}
+
+func TestRequestTaskAllowsCronResultForCoveredOwnerServer(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "33333333-3333-3333-3333-333333333333")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverIgnoreAll, []uint64{reporter.ID})
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if !cronLastResult(t, cronTask.ID) {
+		t.Fatal("covered owner cron result must update cron status")
+	}
+}
+
+func TestRequestTaskAllowsCronResultForCoveredAdminOwnedCron(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "44444444-4444-4444-4444-444444444444")
+	cronTask := requestTaskSecurityCron(42, 1, model.CronCoverIgnoreAll, []uint64{reporter.ID})
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		1:   {Role: model.RoleAdmin},
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if !cronLastResult(t, cronTask.ID) {
+		t.Fatal("covered admin-owned cron result must update cron status")
+	}
+}
+
+func TestRequestTaskSkipsAlertTriggerCronResultFromUntriggeredReporter(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "55555555-5555-5555-5555-555555555555")
+	triggerServer := requestTaskSecurityServer(8, 200, "66666666-6666-6666-6666-666666666666")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverAlertTrigger, nil)
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter, triggerServer}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200, "trigger-secret": 200})
+	connectRequestTaskSecurityTaskStream(t, triggerServer.ID)
+	singleton.CronTrigger(cronTask, triggerServer.ID)()
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if cronLastResult(t, cronTask.ID) {
+		t.Fatal("alert-trigger cron result from a non-triggered server must not update cron status")
+	}
+}
+
+func TestRequestTaskAllowsAlertTriggerCronResultForTriggeredReporter(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "77777777-7777-7777-7777-777777777777")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverAlertTrigger, nil)
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+	connectRequestTaskSecurityTaskStream(t, reporter.ID)
+	singleton.CronTrigger(cronTask, reporter.ID)()
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if !cronLastResult(t, cronTask.ID) {
+		t.Fatal("alert-trigger cron result from the triggered server must update cron status")
+	}
+}
+
+func TestRequestTaskAllowsAlertTriggerCronResultReportedDuringSend(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverAlertTrigger, nil)
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+	connectRequestTaskSecurityTaskStreamWithSendHook(t, reporter.ID, nil, func(task *pb.Task) {
+		if task.GetId() != cronTask.ID {
+			t.Fatalf("expected alert-trigger task %d, got %d", cronTask.ID, task.GetId())
+		}
+		runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+	})
+
+	singleton.CronTrigger(cronTask, reporter.ID)()
+
+	if !cronLastResult(t, cronTask.ID) {
+		t.Fatal("alert-trigger cron result reported during Send must update cron status")
+	}
+}
+
+func TestRequestTaskSkipsAlertTriggerCronResultAfterSendFailure(t *testing.T) {
+	reporter := requestTaskSecurityServer(7, 200, "bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb")
+	cronTask := requestTaskSecurityCron(42, 200, model.CronCoverAlertTrigger, nil)
+	setupRequestTaskSecurityFixture(t, []*model.Server{reporter}, []*model.Cron{cronTask}, map[uint64]model.UserInfo{
+		200: {Role: model.RoleMember},
+	}, map[string]uint64{"reporter-secret": 200})
+	connectRequestTaskSecurityTaskStreamWithSendHook(t, reporter.ID, errors.New("send failed"), nil)
+	singleton.CronTrigger(cronTask, reporter.ID)()
+
+	runRequestTaskSecurityResult(t, "reporter-secret", reporter.UUID, cronTaskResult(cronTask.ID, true))
+
+	if cronLastResult(t, cronTask.ID) {
+		t.Fatal("alert-trigger cron result after failed dispatch must not update cron status")
+	}
+}
+
+func setupRequestTaskSecurityFixture(t *testing.T, servers []*model.Server, crons []*model.Cron, users map[uint64]model.UserInfo, agentSecrets map[string]uint64) {
+	t.Helper()
+
+	originalDB := singleton.DB
+	originalConf := singleton.Conf
+	originalLoc := singleton.Loc
+	originalServerShared := singleton.ServerShared
+	originalCronShared := singleton.CronShared
+	originalUserInfoMap := singleton.UserInfoMap
+	originalAgentSecretToUserID := singleton.AgentSecretToUserId
+
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB, err := db.DB()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB.SetMaxOpenConns(1)
+
+	singleton.DB = db
+	singleton.Conf = &singleton.ConfigClass{Config: &model.Config{}}
+	singleton.Loc = time.UTC
+	if err := singleton.DB.AutoMigrate(model.Server{}, model.Cron{}); err != nil {
+		t.Fatal(err)
+	}
+	for _, server := range servers {
+		if err := singleton.DB.Create(server).Error; err != nil {
+			t.Fatal(err)
+		}
+	}
+	for _, cronTask := range crons {
+		if err := singleton.DB.Create(cronTask).Error; err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	singleton.UserLock.Lock()
+	singleton.UserInfoMap = users
+	singleton.AgentSecretToUserId = agentSecrets
+	singleton.UserLock.Unlock()
+	singleton.ServerShared = singleton.NewServerClass()
+	singleton.CronShared = singleton.NewCronClass()
+
+	t.Cleanup(func() {
+		if singleton.CronShared != nil && singleton.CronShared.Cron != nil {
+			singleton.CronShared.Stop()
+		}
+		sqlDB.Close()
+		singleton.DB = originalDB
+		singleton.Conf = originalConf
+		singleton.Loc = originalLoc
+		singleton.ServerShared = originalServerShared
+		singleton.CronShared = originalCronShared
+		singleton.UserLock.Lock()
+		singleton.UserInfoMap = originalUserInfoMap
+		singleton.AgentSecretToUserId = originalAgentSecretToUserID
+		singleton.UserLock.Unlock()
+	})
+}
+
+func requestTaskSecurityServer(id, userID uint64, uuid string) *model.Server {
+	return &model.Server{
+		Common: model.Common{ID: id, UserID: userID},
+		UUID:   uuid,
+		Name:   "request-task-security-server",
+	}
+}
+
+func requestTaskSecurityCron(id, userID uint64, cover uint8, servers []uint64) *model.Cron {
+	return &model.Cron{
+		Common:    model.Common{ID: id, UserID: userID},
+		Name:      "request-task-security-cron",
+		Command:   "id",
+		Scheduler: "@every 1h",
+		Cover:     cover,
+		Servers:   servers,
+	}
+}
+
+func cronTaskResult(cronID uint64, successful bool) *pb.TaskResult {
+	return &pb.TaskResult{
+		Id:         cronID,
+		Type:       model.TaskTypeCommand,
+		Delay:      1,
+		Data:       "cron result",
+		Successful: successful,
+	}
+}
+
+func connectRequestTaskSecurityTaskStream(t *testing.T, serverID uint64) {
+	t.Helper()
+
+	connectRequestTaskSecurityTaskStreamWithSendHook(t, serverID, nil, nil)
+}
+
+func connectRequestTaskSecurityTaskStreamWithSendHook(t *testing.T, serverID uint64, sendErr error, onSend func(*pb.Task)) {
+	t.Helper()
+
+	server, ok := singleton.ServerShared.Get(serverID)
+	if !ok {
+		t.Fatalf("server %d not found", serverID)
+	}
+	server.TaskStream = &requestTaskSecurityStream{ctx: context.Background(), sendErr: sendErr, onSend: onSend}
+}
+
+func runRequestTaskSecurityResult(t *testing.T, secret string, uuid string, result *pb.TaskResult) {
+	t.Helper()
+
+	stream := &requestTaskSecurityStream{
+		ctx: metadata.NewIncomingContext(context.Background(), metadata.Pairs(
+			"client_secret", secret,
+			"client_uuid", uuid,
+		)),
+		results: []*pb.TaskResult{result},
+	}
+	err := NewNezhaHandler().RequestTask(stream)
+	if !errors.Is(err, context.Canceled) {
+		t.Fatalf("expected RequestTask to finish after test result, got %v", err)
+	}
+}
+
+func cronLastResult(t *testing.T, cronID uint64) bool {
+	t.Helper()
+
+	var cronTask model.Cron
+	if err := singleton.DB.First(&cronTask, cronID).Error; err != nil {
+		t.Fatal(err)
+	}
+	return cronTask.LastResult
+}

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"slices"
 	"strings"
+	"sync"
+	"time"
 
 	"github.com/jinzhu/copier"
 
@@ -15,9 +17,13 @@ import (
 	pb "github.com/nezhahq/nezha/proto"
 )
 
+const alertTriggerCronResultAuthorizationTTL = 24 * time.Hour
+
 type CronClass struct {
 	class[uint64, *model.Cron]
 	*cron.Cron
+	pendingAlertTriggerTasksMu sync.Mutex
+	pendingAlertTriggerTasks   map[uint64]map[uint64][]time.Time
 }
 
 func NewCronClass() *CronClass {
@@ -64,7 +70,8 @@ func NewCronClass() *CronClass {
 			list:       list,
 			sortedList: sortedList,
 		},
-		Cron: cronx,
+		Cron:                     cronx,
+		pendingAlertTriggerTasks: make(map[uint64]map[uint64][]time.Time),
 	}
 }
 
@@ -78,6 +85,7 @@ func (c *CronClass) Update(cr *model.Cron) {
 	delete(c.list, cr.ID)
 	c.list[cr.ID] = cr
 	c.listMu.Unlock()
+	c.deleteAlertTriggerCronResultAuthorizations([]uint64{cr.ID})
 
 	c.sortList()
 }
@@ -92,6 +100,7 @@ func (c *CronClass) Delete(idList []uint64) {
 		delete(c.list, id)
 	}
 	c.listMu.Unlock()
+	c.deleteAlertTriggerCronResultAuthorizations(idList)
 
 	c.sortList()
 }
@@ -130,6 +139,113 @@ func cronCanBeTriggeredByOwner(cr *model.Cron, triggerOwner uint64) bool {
 	return cr.UserID == triggerOwner || userIsAdmin(triggerOwner)
 }
 
+func CanReportCronResult(cr *model.Cron, reporter *model.Server) bool {
+	if cr == nil || reporter == nil || !cronCanSendToServer(cr, reporter) {
+		return false
+	}
+	if cr.Cover == model.CronCoverAll {
+		return !slices.Contains(cr.Servers, reporter.ID)
+	}
+	if cr.Cover == model.CronCoverIgnoreAll {
+		return slices.Contains(cr.Servers, reporter.ID)
+	}
+	if cr.Cover == model.CronCoverAlertTrigger {
+		return CronShared != nil && CronShared.consumeAlertTriggerCronResult(cr.ID, reporter.ID)
+	}
+	return false
+}
+
+func (c *CronClass) reserveAlertTriggerCronResult(cronID uint64, serverID uint64) {
+	c.pendingAlertTriggerTasksMu.Lock()
+	defer c.pendingAlertTriggerTasksMu.Unlock()
+
+	now := time.Now()
+	c.pruneExpiredAlertTriggerCronResultsLocked(now)
+	if c.pendingAlertTriggerTasks == nil {
+		c.pendingAlertTriggerTasks = make(map[uint64]map[uint64][]time.Time)
+	}
+	if c.pendingAlertTriggerTasks[cronID] == nil {
+		c.pendingAlertTriggerTasks[cronID] = make(map[uint64][]time.Time)
+	}
+	c.pendingAlertTriggerTasks[cronID][serverID] = append(c.pendingAlertTriggerTasks[cronID][serverID], now.Add(alertTriggerCronResultAuthorizationTTL))
+}
+
+func (c *CronClass) revokeAlertTriggerCronResult(cronID uint64, serverID uint64) {
+	c.pendingAlertTriggerTasksMu.Lock()
+	defer c.pendingAlertTriggerTasksMu.Unlock()
+
+	serverTasks := c.pendingAlertTriggerTasks[cronID]
+	expiresAtList := serverTasks[serverID]
+	if len(expiresAtList) == 0 {
+		return
+	}
+	expiresAtList = expiresAtList[:len(expiresAtList)-1]
+	if len(expiresAtList) == 0 {
+		delete(serverTasks, serverID)
+	} else {
+		serverTasks[serverID] = expiresAtList
+	}
+	if len(serverTasks) == 0 {
+		delete(c.pendingAlertTriggerTasks, cronID)
+	}
+}
+
+func (c *CronClass) consumeAlertTriggerCronResult(cronID uint64, serverID uint64) bool {
+	c.pendingAlertTriggerTasksMu.Lock()
+	defer c.pendingAlertTriggerTasksMu.Unlock()
+
+	c.pruneExpiredAlertTriggerCronResultsLocked(time.Now())
+	return c.consumeAlertTriggerCronResultLocked(cronID, serverID)
+}
+
+func (c *CronClass) consumeAlertTriggerCronResultLocked(cronID uint64, serverID uint64) bool {
+	serverTasks := c.pendingAlertTriggerTasks[cronID]
+	expiresAtList := serverTasks[serverID]
+	if len(expiresAtList) == 0 {
+		return false
+	}
+	expiresAtList = expiresAtList[1:]
+	if len(expiresAtList) == 0 {
+		delete(serverTasks, serverID)
+	} else {
+		serverTasks[serverID] = expiresAtList
+	}
+	if len(serverTasks) == 0 {
+		delete(c.pendingAlertTriggerTasks, cronID)
+	}
+	return true
+}
+
+func (c *CronClass) pruneExpiredAlertTriggerCronResultsLocked(now time.Time) {
+	for cronID, serverTasks := range c.pendingAlertTriggerTasks {
+		for serverID, expiresAtList := range serverTasks {
+			validExpiresAtList := expiresAtList[:0]
+			for _, expiresAt := range expiresAtList {
+				if expiresAt.After(now) {
+					validExpiresAtList = append(validExpiresAtList, expiresAt)
+				}
+			}
+			if len(validExpiresAtList) == 0 {
+				delete(serverTasks, serverID)
+			} else {
+				serverTasks[serverID] = validExpiresAtList
+			}
+		}
+		if len(serverTasks) == 0 {
+			delete(c.pendingAlertTriggerTasks, cronID)
+		}
+	}
+}
+
+func (c *CronClass) deleteAlertTriggerCronResultAuthorizations(cronIDs []uint64) {
+	c.pendingAlertTriggerTasksMu.Lock()
+	defer c.pendingAlertTriggerTasksMu.Unlock()
+
+	for _, cronID := range cronIDs {
+		delete(c.pendingAlertTriggerTasks, cronID)
+	}
+}
+
 func ManualTrigger(cr *model.Cron) {
 	CronTrigger(cr)()
 }
@@ -149,11 +265,17 @@ func CronTrigger(cr *model.Cron, triggerServer ...uint64) func() {
 					return
 				}
 				if s.TaskStream != nil {
-					s.TaskStream.Send(&pb.Task{
+					cronShared := CronShared
+					if cronShared != nil {
+						cronShared.reserveAlertTriggerCronResult(cr.ID, s.ID)
+					}
+					if err := s.TaskStream.Send(&pb.Task{
 						Id:   cr.ID,
 						Data: cr.Command,
 						Type: model.TaskTypeCommand,
-					})
+					}); err != nil && cronShared != nil {
+						cronShared.revokeAlertTriggerCronResult(cr.ID, s.ID)
+					}
 				} else {
 					// 保存当前服务器状态信息
 					curServer := model.Server{}

@@ -8,6 +8,11 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
+	"github.com/patrickmn/go-cache"
+	"github.com/robfig/cron/v3"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+
 	"github.com/nezhahq/nezha/model"
 	pb "github.com/nezhahq/nezha/proto"
 	"google.golang.org/grpc/metadata"
@@ -335,6 +340,241 @@ func TestSendTriggerTasksMixedCronIDsOnlyFiresAllowed(t *testing.T) {
 	assertNoTask(t, stream)
 }
 
+func TestAlertTriggerCronResultAuthorizationConsumesOneDispatch(t *testing.T) {
+	cronClass := &CronClass{}
+	cronClass.reserveAlertTriggerCronResult(42, 7)
+	cronClass.reserveAlertTriggerCronResult(42, 7)
+
+	if !cronClass.consumeAlertTriggerCronResult(42, 7) {
+		t.Fatal("expected first alert-trigger authorization to be consumed")
+	}
+	if !cronClass.consumeAlertTriggerCronResult(42, 7) {
+		t.Fatal("expected second alert-trigger authorization to be consumed")
+	}
+	if cronClass.consumeAlertTriggerCronResult(42, 7) {
+		t.Fatal("expected alert-trigger authorization to be consumed only once per dispatch")
+	}
+}
+
+func TestAlertTriggerCronResultAuthorizationExpires(t *testing.T) {
+	cronClass := &CronClass{
+		pendingAlertTriggerTasks: map[uint64]map[uint64][]time.Time{
+			42: {7: {time.Now().Add(-time.Second)}},
+		},
+	}
+
+	if cronClass.consumeAlertTriggerCronResult(42, 7) {
+		t.Fatal("expired alert-trigger authorization must not be accepted")
+	}
+	if len(cronClass.pendingAlertTriggerTasks) != 0 {
+		t.Fatal("expired alert-trigger authorization must be pruned")
+	}
+}
+
+func TestAlertTriggerCronResultAuthorizationRevokeRemovesLatestDispatch(t *testing.T) {
+	existingAuthorizationExpiresAt := time.Now().Add(time.Hour)
+	cronClass := &CronClass{
+		pendingAlertTriggerTasks: map[uint64]map[uint64][]time.Time{
+			42: {7: {existingAuthorizationExpiresAt}},
+		},
+	}
+	cronClass.reserveAlertTriggerCronResult(42, 7)
+
+	cronClass.revokeAlertTriggerCronResult(42, 7)
+
+	authorizations := cronClass.pendingAlertTriggerTasks[42][7]
+	if len(authorizations) != 1 {
+		t.Fatalf("expected one previous alert-trigger authorization to remain, got %d", len(authorizations))
+	}
+	if !authorizations[0].Equal(existingAuthorizationExpiresAt) {
+		t.Fatal("send failure rollback must remove the newest reserved authorization")
+	}
+}
+
+func TestCronClassUpdatePrunesAlertTriggerCronResultAuthorization(t *testing.T) {
+	cronClass := &CronClass{
+		Cron: cron.New(cron.WithSeconds()),
+		class: class[uint64, *model.Cron]{
+			list: map[uint64]*model.Cron{42: {Common: model.Common{ID: 42}}},
+		},
+		pendingAlertTriggerTasks: map[uint64]map[uint64][]time.Time{
+			42: {7: {time.Now().Add(time.Hour)}},
+		},
+	}
+
+	cronClass.Update(&model.Cron{Common: model.Common{ID: 42}})
+
+	if len(cronClass.pendingAlertTriggerTasks) != 0 {
+		t.Fatal("cron update must prune old alert-trigger result authorizations")
+	}
+}
+
+func TestCronClassDeletePrunesAlertTriggerCronResultAuthorization(t *testing.T) {
+	cronClass := &CronClass{
+		Cron: cron.New(cron.WithSeconds()),
+		class: class[uint64, *model.Cron]{
+			list: map[uint64]*model.Cron{42: {Common: model.Common{ID: 42}}},
+		},
+		pendingAlertTriggerTasks: map[uint64]map[uint64][]time.Time{
+			42: {7: {time.Now().Add(time.Hour)}},
+		},
+	}
+
+	cronClass.Delete([]uint64{42})
+
+	if len(cronClass.pendingAlertTriggerTasks) != 0 {
+		t.Fatal("cron delete must prune alert-trigger result authorizations")
+	}
+}
+
+// CanReportCronResult is the cron-side dual of canReportServiceResult: it gates
+// agent-reported TaskTypeCommand results to only the cron/server pairs the
+// dashboard actually fanned the task out to. Without these inbound checks any
+// authenticated agent could fabricate a TaskResult for an arbitrary cron ID and
+// poison LastResult / fire success/failure notifications belonging to another
+// tenant. The tests below pin each Cover branch end-to-end against the dispatch
+// logic in CronTrigger so the two sides stay symmetric.
+
+func TestCanReportCronResultRejectsNilCronOrReporter(t *testing.T) {
+	cr := &model.Cron{Common: model.Common{ID: 7, UserID: 100}, Cover: model.CronCoverAll}
+	reporter := &model.Server{Common: model.Common{ID: 1, UserID: 100}}
+
+	if CanReportCronResult(nil, reporter) {
+		t.Fatal("nil cron must be rejected — would dereference inside cover branches")
+	}
+	if CanReportCronResult(cr, nil) {
+		t.Fatal("nil reporter must be rejected")
+	}
+}
+
+func TestCanReportCronResultRejectsForeignReporter(t *testing.T) {
+	replaceUserInfoMapForSecurityTest(t, map[uint64]model.UserInfo{
+		100: {Role: model.RoleMember},
+		200: {Role: model.RoleMember},
+	})
+
+	cr := &model.Cron{
+		Common: model.Common{ID: 7, UserID: 100},
+		Cover:  model.CronCoverAll,
+	}
+	foreign := &model.Server{Common: model.Common{ID: 1, UserID: 200}}
+
+	if CanReportCronResult(cr, foreign) {
+		t.Fatal("foreign-user reporter must be rejected: CronTrigger never dispatched to it")
+	}
+}
+
+func TestCanReportCronResultCronCoverAllRejectsReporterInDenyList(t *testing.T) {
+	cr := &model.Cron{
+		Common:  model.Common{ID: 7, UserID: 100},
+		Cover:   model.CronCoverAll,
+		Servers: []uint64{1},
+	}
+	reporter := &model.Server{Common: model.Common{ID: 1, UserID: 100}}
+
+	if CanReportCronResult(cr, reporter) {
+		t.Fatal("CronCoverAll treats Servers as deny-list; reporter in the list must be rejected")
+	}
+}
+
+func TestCanReportCronResultCronCoverAllAcceptsReporterNotInDenyList(t *testing.T) {
+	cr := &model.Cron{
+		Common:  model.Common{ID: 7, UserID: 100},
+		Cover:   model.CronCoverAll,
+		Servers: []uint64{99},
+	}
+	reporter := &model.Server{Common: model.Common{ID: 1, UserID: 100}}
+
+	if !CanReportCronResult(cr, reporter) {
+		t.Fatal("CronCoverAll with reporter NOT in Servers must accept — CronTrigger dispatches to it")
+	}
+}
+
+func TestCanReportCronResultCronCoverIgnoreAllAcceptsReporterInAllowList(t *testing.T) {
+	cr := &model.Cron{
+		Common:  model.Common{ID: 7, UserID: 100},
+		Cover:   model.CronCoverIgnoreAll,
+		Servers: []uint64{1},
+	}
+	reporter := &model.Server{Common: model.Common{ID: 1, UserID: 100}}
+
+	if !CanReportCronResult(cr, reporter) {
+		t.Fatal("CronCoverIgnoreAll treats Servers as allow-list; reporter in the list must be accepted")
+	}
+}
+
+func TestCanReportCronResultCronCoverIgnoreAllRejectsReporterOutsideAllowList(t *testing.T) {
+	cr := &model.Cron{
+		Common:  model.Common{ID: 7, UserID: 100},
+		Cover:   model.CronCoverIgnoreAll,
+		Servers: []uint64{99},
+	}
+	reporter := &model.Server{Common: model.Common{ID: 1, UserID: 100}}
+
+	if CanReportCronResult(cr, reporter) {
+		t.Fatal("CronCoverIgnoreAll with reporter NOT in Servers must reject — CronTrigger never dispatched to it")
+	}
+}
+
+// failingTaskStream simulates a TaskStream whose Send always errors. CronTrigger
+// uses this signal to revoke a reserved alert-trigger authorization, so the
+// agent can't later attach to the cron via CanReportCronResult based on a
+// dispatch that never actually reached the wire.
+type failingTaskStream struct {
+	capturedTaskStream
+	sendErr error
+}
+
+func newFailingTaskStream(err error) *failingTaskStream {
+	return &failingTaskStream{
+		capturedTaskStream: capturedTaskStream{tasks: make(chan *pb.Task, 4)},
+		sendErr:            err,
+	}
+}
+
+func (s *failingTaskStream) Send(task *pb.Task) error {
+	s.tasks <- task
+	return s.sendErr
+}
+
+func TestCronTriggerRevokesAlertTriggerAuthorizationOnSendFailure(t *testing.T) {
+	failing := newFailingTaskStream(context.Canceled)
+	replaceServerSharedForSecurityTest(t,
+		&model.Server{Common: model.Common{ID: 7, UserID: 100}, Name: "broken-server", TaskStream: failing},
+	)
+	replaceUserInfoMapForSecurityTest(t, map[uint64]model.UserInfo{
+		100: {Role: model.RoleMember},
+	})
+
+	originalCronShared := CronShared
+	t.Cleanup(func() { CronShared = originalCronShared })
+	CronShared = &CronClass{
+		class:                    class[uint64, *model.Cron]{list: map[uint64]*model.Cron{}},
+		pendingAlertTriggerTasks: map[uint64]map[uint64][]time.Time{},
+	}
+
+	cr := &model.Cron{
+		Common: model.Common{ID: 42, UserID: 100},
+		Cover:  model.CronCoverAlertTrigger,
+	}
+
+	CronTrigger(cr, 7)()
+
+	// drain the dispatched task — Send error is what we care about, not the payload
+	select {
+	case <-failing.tasks:
+	case <-time.After(time.Second):
+		t.Fatal("expected CronTrigger to call Send before reacting to the error")
+	}
+
+	if CronShared.consumeAlertTriggerCronResult(42, 7) {
+		t.Fatal("Send failure must revoke the reserved alert-trigger authorization; otherwise a foreign agent could later report a result for a dispatch that never reached the wire")
+	}
+	if len(CronShared.pendingAlertTriggerTasks) != 0 {
+		t.Fatalf("expected pendingAlertTriggerTasks to be empty after revoke, got %d entries", len(CronShared.pendingAlertTriggerTasks))
+	}
+}
+
 func TestClassCheckPermission(t *testing.T) {
 	replaceUserInfoMapForSecurityTest(t, map[uint64]model.UserInfo{
 		1:   {Role: model.RoleAdmin},
@@ -377,3 +617,308 @@ func TestClassCheckPermission(t *testing.T) {
 		t.Fatal("expected admin to access any resource")
 	}
 }
+
+func TestServiceMonitorResultSkipsReporterOutsideServiceCover(t *testing.T) {
+	ss := newServiceMonitorSecurityHarness(t,
+		&model.Server{Common: model.Common{ID: 1, UserID: 100}, Name: "covered-server"},
+		&model.Server{Common: model.Common{ID: 2, UserID: 100}, Name: "uncovered-server"},
+	)
+	addServiceMonitorSecurityService(t, ss, &model.Service{
+		Common:      model.Common{ID: 10, UserID: 100},
+		Name:        "selected-only-service",
+		Type:        model.TaskTypeTCPPing,
+		Target:      "example.invalid:443",
+		Duration:    3600,
+		Cover:       model.ServiceCoverIgnoreAll,
+		SkipServers: map[uint64]bool{1: true},
+	})
+
+	ss.Dispatch(serviceMonitorResult(2, 10, model.TaskTypeTCPPing, true))
+	ss.Dispatch(serviceMonitorResult(1, 10, model.TaskTypeTCPPing, true))
+
+	waitForServiceHistory(t, 10, 1)
+	assertNoServiceHistory(t, 10, 2)
+}
+
+func TestServiceMonitorResultSkipsCoveredReporterOwnedByAnotherUser(t *testing.T) {
+	ss := newServiceMonitorSecurityHarness(t,
+		&model.Server{Common: model.Common{ID: 1, UserID: 100}, Name: "owner-server"},
+		&model.Server{Common: model.Common{ID: 2, UserID: 200}, Name: "foreign-server"},
+	)
+	addServiceMonitorSecurityService(t, ss, &model.Service{
+		Common:      model.Common{ID: 10, UserID: 100},
+		Name:        "owner-only-service",
+		Type:        model.TaskTypeTCPPing,
+		Target:      "example.invalid:443",
+		Duration:    3600,
+		Cover:       model.ServiceCoverIgnoreAll,
+		SkipServers: map[uint64]bool{1: true, 2: true},
+	})
+
+	ss.Dispatch(serviceMonitorResult(2, 10, model.TaskTypeTCPPing, true))
+	ss.Dispatch(serviceMonitorResult(1, 10, model.TaskTypeTCPPing, true))
+
+	waitForServiceHistory(t, 10, 1)
+	assertNoServiceHistory(t, 10, 2)
+}
+
+func TestServiceMonitorResultSkipsMismatchedTaskType(t *testing.T) {
+	ss := newServiceMonitorSecurityHarness(t,
+		&model.Server{Common: model.Common{ID: 1, UserID: 100}, Name: "owner-server"},
+	)
+	addServiceMonitorSecurityService(t, ss, &model.Service{
+		Common:      model.Common{ID: 10, UserID: 100},
+		Name:        "http-service",
+		Type:        model.TaskTypeHTTPGet,
+		Target:      "https://example.invalid",
+		Duration:    3600,
+		Cover:       model.ServiceCoverIgnoreAll,
+		SkipServers: map[uint64]bool{1: true},
+	})
+
+	ss.Dispatch(serviceMonitorResult(1, 10, model.TaskTypeTCPPing, false))
+	ss.Dispatch(serviceMonitorResult(1, 10, model.TaskTypeHTTPGet, true))
+
+	waitForTodayStats(t, ss, 10, 1, 0)
+}
+
+func TestServiceMonitorResultSkipsUnknownReporter(t *testing.T) {
+	ss := newServiceMonitorSecurityHarness(t,
+		&model.Server{Common: model.Common{ID: 1, UserID: 100}, Name: "owner-server"},
+	)
+	addServiceMonitorSecurityService(t, ss, &model.Service{
+		Common:      model.Common{ID: 10, UserID: 100},
+		Name:        "known-reporter-service",
+		Type:        model.TaskTypeTCPPing,
+		Target:      "example.invalid:443",
+		Duration:    3600,
+		Cover:       model.ServiceCoverIgnoreAll,
+		SkipServers: map[uint64]bool{1: true},
+	})
+
+	ss.Dispatch(serviceMonitorResult(999, 10, model.TaskTypeTCPPing, true))
+	ss.Dispatch(serviceMonitorResult(1, 10, model.TaskTypeTCPPing, true))
+
+	waitForServiceHistory(t, 10, 1)
+	assertNoServiceHistory(t, 10, 999)
+}
+
+func TestServiceMonitorResultAllowsCoveredReporterOwnedByServiceOwner(t *testing.T) {
+	ss := newServiceMonitorSecurityHarness(t,
+		&model.Server{Common: model.Common{ID: 1, UserID: 100}, Name: "owner-server"},
+	)
+	addServiceMonitorSecurityService(t, ss, &model.Service{
+		Common:      model.Common{ID: 10, UserID: 100},
+		Name:        "owner-service",
+		Type:        model.TaskTypeTCPPing,
+		Target:      "example.invalid:443",
+		Duration:    3600,
+		Cover:       model.ServiceCoverIgnoreAll,
+		SkipServers: map[uint64]bool{1: true},
+	})
+
+	ss.Dispatch(serviceMonitorResult(1, 10, model.TaskTypeTCPPing, true))
+
+	waitForServiceHistory(t, 10, 1)
+}
+
+func TestServiceMonitorResultAllowsCoveredReporterForAdminOwnedService(t *testing.T) {
+	replaceUserInfoMapForSecurityTest(t, map[uint64]model.UserInfo{
+		1:   {Role: model.RoleAdmin},
+		200: {Role: model.RoleMember},
+	})
+	ss := newServiceMonitorSecurityHarness(t,
+		&model.Server{Common: model.Common{ID: 2, UserID: 200}, Name: "member-server"},
+	)
+	addServiceMonitorSecurityService(t, ss, &model.Service{
+		Common:      model.Common{ID: 10, UserID: 1},
+		Name:        "admin-service",
+		Type:        model.TaskTypeTCPPing,
+		Target:      "example.invalid:443",
+		Duration:    3600,
+		Cover:       model.ServiceCoverIgnoreAll,
+		SkipServers: map[uint64]bool{2: true},
+	})
+
+	ss.Dispatch(serviceMonitorResult(2, 10, model.TaskTypeTCPPing, true))
+
+	waitForServiceHistory(t, 10, 2)
+}
+
+func newServiceMonitorSecurityHarness(t *testing.T, servers ...*model.Server) *ServiceSentinel {
+	t.Helper()
+
+	originalDB := DB
+	originalConf := Conf
+	originalCache := Cache
+	originalCronShared := CronShared
+	originalServerShared := ServerShared
+	originalServiceSentinelShared := ServiceSentinelShared
+	originalNotificationShared := NotificationShared
+	originalTSDBShared := TSDBShared
+	originalLoc := Loc
+	var sqlDBClose func() error
+
+	t.Cleanup(func() {
+		DB = originalDB
+		Conf = originalConf
+		Cache = originalCache
+		CronShared = originalCronShared
+		ServerShared = originalServerShared
+		ServiceSentinelShared = originalServiceSentinelShared
+		NotificationShared = originalNotificationShared
+		TSDBShared = originalTSDBShared
+		Loc = originalLoc
+		if sqlDBClose != nil {
+			_ = sqlDBClose()
+		}
+	})
+
+	db, err := gorm.Open(sqlite.Open("file:"+t.Name()+"?mode=memory&cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB, err := db.DB()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB.SetMaxOpenConns(1)
+	sqlDBClose = sqlDB.Close
+	DB = db
+	if err := DB.AutoMigrate(
+		model.Server{},
+		model.Service{},
+		model.ServiceHistory{},
+		model.Notification{},
+		model.NotificationGroup{},
+		model.NotificationGroupNotification{},
+	); err != nil {
+		t.Fatal(err)
+	}
+
+	Conf = &ConfigClass{Config: &model.Config{AvgPingCount: 1}}
+	Cache = cache.New(time.Minute, time.Minute)
+	CronShared = &CronClass{
+		Cron:  cron.New(cron.WithSeconds()),
+		class: class[uint64, *model.Cron]{list: map[uint64]*model.Cron{}},
+	}
+	NotificationShared = &NotificationClass{
+		class:         class[uint64, *model.Notification]{list: map[uint64]*model.Notification{}},
+		groupToIDList: map[uint64]map[uint64]*model.Notification{},
+		idToGroupList: map[uint64]map[uint64]struct{}{},
+		groupList:     map[uint64]string{},
+	}
+	TSDBShared = nil
+	Loc = time.UTC
+
+	serverClass := &ServerClass{
+		class: class[uint64, *model.Server]{
+			list: make(map[uint64]*model.Server),
+		},
+		uuidToID: make(map[string]uint64),
+	}
+	for _, server := range servers {
+		serverClass.list[server.ID] = server
+	}
+	ServerShared = serverClass
+
+	bus := make(chan *model.Service, 1)
+	ss, err := NewServiceSentinel(bus)
+	if err != nil {
+		t.Fatal(err)
+	}
+	ServiceSentinelShared = ss
+	return ss
+}
+
+func addServiceMonitorSecurityService(t *testing.T, ss *ServiceSentinel, service *model.Service) {
+	t.Helper()
+
+	if err := DB.Create(service).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := ss.Update(service); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func serviceMonitorResult(reporter, serviceID uint64, taskType uint8, successful bool) ReportData {
+	return ReportData{
+		Reporter: reporter,
+		Data: &pb.TaskResult{
+			Id:         serviceID,
+			Type:       uint64(taskType),
+			Delay:      12,
+			Data:       "service monitor result",
+			Successful: successful,
+		},
+	}
+}
+
+func waitForServiceHistory(t *testing.T, serviceID, serverID uint64) {
+	t.Helper()
+
+	deadline := time.After(time.Second)
+	for {
+		var count int64
+		if err := DB.Model(&model.ServiceHistory{}).
+			Where("service_id = ? AND server_id = ?", serviceID, serverID).
+			Count(&count).Error; err != nil {
+			t.Fatal(err)
+		}
+		if count > 0 {
+			return
+		}
+
+		select {
+		case <-deadline:
+			t.Fatalf("expected service history for service %d from server %d", serviceID, serverID)
+		default:
+			time.Sleep(10 * time.Millisecond)
+		}
+	}
+}
+
+func assertNoServiceHistory(t *testing.T, serviceID, serverID uint64) {
+	t.Helper()
+
+	var count int64
+	if err := DB.Model(&model.ServiceHistory{}).
+		Where("service_id = ? AND server_id = ?", serviceID, serverID).
+		Count(&count).Error; err != nil {
+		t.Fatal(err)
+	}
+	if count != 0 {
+		t.Fatalf("expected no service history for service %d from server %d, got %d", serviceID, serverID, count)
+	}
+}
+
+func waitForTodayStats(t *testing.T, ss *ServiceSentinel, serviceID uint64, wantUp, wantDown uint64) {
+	t.Helper()
+
+	deadline := time.After(time.Second)
+	for {
+		ss.serviceResponseDataStoreLock.RLock()
+		stats := ss.serviceStatusToday[serviceID]
+		var up, down uint64
+		if stats != nil {
+			up = stats.Up
+			down = stats.Down
+		}
+		ss.serviceResponseDataStoreLock.RUnlock()
+
+		if up == wantUp && down == wantDown {
+			return
+		}
+		if down > wantDown {
+			t.Fatalf("expected service %d down count %d, got %d", serviceID, wantDown, down)
+		}
+
+		select {
+		case <-deadline:
+			t.Fatalf("expected service %d stats up=%d down=%d", serviceID, wantUp, wantDown)
+		default:
+			time.Sleep(10 * time.Millisecond)
+		}
+	}
+}

@@ -472,16 +472,37 @@ func (ss *ServiceSentinel) CheckPermission(c *gin.Context, idList iter.Seq[uint6
 	return true
 }
 
+func canReportServiceResult(service *model.Service, reporter *model.Server, taskType uint64) bool {
+	if service == nil || reporter == nil || uint64(service.Type) != taskType {
+		return false
+	}
+	switch service.Cover {
+	case model.ServiceCoverAll:
+		if service.SkipServers[reporter.ID] {
+			return false
+		}
+	case model.ServiceCoverIgnoreAll:
+		if !service.SkipServers[reporter.ID] {
+			return false
+		}
+	default:
+		return false
+	}
+
+	return service.UserID == reporter.UserID || userIsAdmin(service.UserID)
+}
+
 // worker 服务监控的实际工作流程
 func (ss *ServiceSentinel) worker() {
 	// 从服务状态汇报管道获取汇报的服务数据
 	for r := range ss.serviceReportChannel {
-		css, _ := ss.Get(r.Data.GetId())
-		if css == nil || css.ID == 0 {
+		cs, _ := ss.Get(r.Data.GetId())
+		reporter, _ := ServerShared.Get(r.Reporter)
+		// 入站结果必须匹配出站任务派发边界，避免 agent 伪造其他服务 ID 写入监控状态。
+		if !canReportServiceResult(cs, reporter, r.Data.GetType()) {
 			log.Printf("NEZHA>> Incorrect service monitor report %+v", r)
 			continue
 		}
-		css = nil
 
 		mh := r.Data
 		if mh.Type == model.TaskTypeTCPPing || mh.Type == model.TaskTypeICMPPing {
@@ -607,7 +628,7 @@ func (ss *ServiceSentinel) worker() {
 			ss.serviceCurrentStatusData[mh.GetId()].result = ss.serviceCurrentStatusData[mh.GetId()].result[:0]
 		}
 
-		cs, _ := ss.Get(mh.GetId())
+		cs, _ = ss.Get(mh.GetId())
 		m := ServerShared.GetList()
 		// 延迟报警
 		if mh.Delay > 0 {