commands to ban (and unban) events using the relay management api.

internal.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.34.2
-// 	protoc        v5.28.1
+// 	protoc        v5.28.2
 // source: internal.proto
 
 package main
@@ -185,7 +185,7 @@ func (x *PubKeyArchive) GetPubkey() string {
 	return ""
 }
 
-type EventInRelay struct {
+type ID struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
@@ -193,8 +193,8 @@ type EventInRelay struct {
 	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 }
 
-func (x *EventInRelay) Reset() {
+func (x *ID) Reset() {
-	*x = EventInRelay{}
+	*x = ID{}
 	if protoimpl.UnsafeEnabled {
 		mi := &file_internal_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -202,13 +202,13 @@ func (x *EventInRelay) Reset() {
 	}
 }
 
-func (x *EventInRelay) String() string {
+func (x *ID) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*EventInRelay) ProtoMessage() {}
+func (*ID) ProtoMessage() {}
 
-func (x *EventInRelay) ProtoReflect() protoreflect.Message {
+func (x *ID) ProtoReflect() protoreflect.Message {
 	mi := &file_internal_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -220,18 +220,73 @@ func (x *EventInRelay) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use EventInRelay.ProtoReflect.Descriptor instead.
+// Deprecated: Use ID.ProtoReflect.Descriptor instead.
-func (*EventInRelay) Descriptor() ([]byte, []int) {
+func (*ID) Descriptor() ([]byte, []int) {
 	return file_internal_proto_rawDescGZIP(), []int{3}
 }
 
-func (x *EventInRelay) GetId() string {
+func (x *ID) GetId() string {
 	if x != nil {
 		return x.Id
 	}
 	return ""
 }
 
+type BannedEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id     []byte `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Reason string `protobuf:"bytes,2,opt,name=reason,proto3" json:"reason,omitempty"`
+}
+
+func (x *BannedEvent) Reset() {
+	*x = BannedEvent{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *BannedEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BannedEvent) ProtoMessage() {}
+
+func (x *BannedEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BannedEvent.ProtoReflect.Descriptor instead.
+func (*BannedEvent) Descriptor() ([]byte, []int) {
+	return file_internal_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *BannedEvent) GetId() []byte {
+	if x != nil {
+		return x.Id
+	}
+	return nil
+}
+
+func (x *BannedEvent) GetReason() string {
+	if x != nil {
+		return x.Reason
+	}
+	return ""
+}
+
 var File_internal_proto protoreflect.FileDescriptor
 
 var file_internal_proto_rawDesc = []byte{
@@ -248,11 +303,14 @@ var file_internal_proto_rawDesc = []byte{
 	0x75, 0x62, 0x6b, 0x65, 0x79, 0x73, 0x22, 0x27, 0x0a, 0x0d, 0x50, 0x75, 0x62, 0x4b, 0x65, 0x79,
 	0x41, 0x72, 0x63, 0x68, 0x69, 0x76, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x70, 0x75, 0x62, 0x6b, 0x65,
 	0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x70, 0x75, 0x62, 0x6b, 0x65, 0x79, 0x22,
-	0x1e, 0x0a, 0x0c, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x49, 0x6e, 0x52, 0x65, 0x6c, 0x61, 0x79, 0x12,
+	0x14, 0x0a, 0x02, 0x49, 0x44, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x42,
+	0x09, 0x52, 0x02, 0x69, 0x64, 0x22, 0x35, 0x0a, 0x0b, 0x42, 0x61, 0x6e, 0x6e, 0x65, 0x64, 0x45,
-	0x1f, 0x5a, 0x1d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x66, 0x69,
+	0x76, 0x65, 0x6e, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c,
-	0x61, 0x74, 0x6a, 0x61, 0x66, 0x2f, 0x6e, 0x6a, 0x75, 0x6d, 0x70, 0x3b, 0x6d, 0x61, 0x69, 0x6e,
+	0x52, 0x02, 0x69, 0x64, 0x12, 0x16, 0x0a, 0x06, 0x72, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x18, 0x02,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x72, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x42, 0x1f, 0x5a, 0x1d,
+	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x66, 0x69, 0x61, 0x74, 0x6a,
+	0x61, 0x66, 0x2f, 0x6e, 0x6a, 0x75, 0x6d, 0x70, 0x3b, 0x6d, 0x61, 0x69, 0x6e, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -267,12 +325,13 @@ func file_internal_proto_rawDescGZIP() []byte {
 	return file_internal_proto_rawDescData
 }
 
-var file_internal_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_internal_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_internal_proto_goTypes = []any{
 	(*CachedEvent)(nil),       // 0: CachedEvent
 	(*FollowListArchive)(nil), // 1: FollowListArchive
 	(*PubKeyArchive)(nil),     // 2: PubKeyArchive
-	(*EventInRelay)(nil),      // 3: EventInRelay
+	(*ID)(nil),                // 3: ID
+	(*BannedEvent)(nil),       // 4: BannedEvent
 }
 var file_internal_proto_depIdxs = []int32{
 	0, // [0:0] is the sub-list for method output_type
@@ -325,7 +384,19 @@ func file_internal_proto_init() {
 			}
 		}
 		file_internal_proto_msgTypes[3].Exporter = func(v any, i int) any {
-			switch v := v.(*EventInRelay); i {
+			switch v := v.(*ID); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_proto_msgTypes[4].Exporter = func(v any, i int) any {
+			switch v := v.(*BannedEvent); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -343,7 +414,7 @@ func file_internal_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_internal_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   4,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

internal.proto

@@ -17,6 +17,11 @@ message PubKeyArchive {
   string pubkey = 1;
 }
 
-message EventInRelay {
+message ID {
   string id = 1;
 }
+
+message BannedEvent {
+  bytes id = 1;
+  string reason = 2;
+}

internaldb.go

@@ -19,6 +19,7 @@ const (
 	TypeFollowListArchive leafdb.DataType = 3
 	TypePubKeyArchive     leafdb.DataType = 4
 	TypeEventInRelay      leafdb.DataType = 5
+	TypeBannedEvent       leafdb.DataType = 6
 )
 
 func NewInternalDB(path string) (*InternalDB, error) {
@@ -36,7 +37,9 @@ func NewInternalDB(path string) (*InternalDB, error) {
 			case TypePubKeyArchive:
 				v = &PubKeyArchive{}
 			case TypeEventInRelay:
-				v = &EventInRelay{}
+				v = &ID{}
+			case TypeBannedEvent:
+				v = &BannedEvent{}
 			default:
 				return nil, fmt.Errorf("what is this? %v", t)
 			}
@@ -74,6 +77,14 @@ func NewInternalDB(path string) (*InternalDB, error) {
 					emit(pkb)
 				},
 			},
+			"banned-event": {
+				Version: 1,
+				Types:   []leafdb.DataType{TypeBannedEvent},
+				Emit: func(t leafdb.DataType, value proto.Message, emit func([]byte)) {
+					ban := value.(*BannedEvent)
+					emit(ban.Id[0:8])
+				},
+			},
 		},
 		Views: map[string]leafdb.ViewDefinition[proto.Message]{
 			"pubkey-archive": {
@@ -92,7 +103,7 @@ func NewInternalDB(path string) (*InternalDB, error) {
 				Emit: func(t leafdb.DataType, value proto.Message, emit func(idxkey []byte, t leafdb.DataType, value proto.Message)) {
 					ee := value.(*CachedEvent)
 					for _, r := range ee.Relays {
-						emit([]byte(trimProtocolAndEndingSlash(r)), TypeEventInRelay, &EventInRelay{Id: ee.Id})
+						emit([]byte(trimProtocolAndEndingSlash(r)), TypeEventInRelay, &ID{Id: ee.Id})
 					}
 				},
 			},
@@ -194,10 +205,46 @@ func (internal *InternalDB) getRelaysForEvent(eventId string) []string {
 func (internal *InternalDB) getEventsInRelay(hostname string) iter.Seq[string] {
 	return func(yield func(string) bool) {
 		for value := range internal.DB.View(leafdb.ExactQuery("events-in-relay", []byte(hostname))) {
-			evtid := value.(*EventInRelay)
+			evtid := value.(*ID)
 			if !yield(evtid.Id) {
 				break
 			}
 		}
 	}
 }
+
+func (internal *InternalDB) banEvent(id, reason string) error {
+	idb, err := hex.DecodeString(id)
+	if err != nil {
+		return err
+	}
+
+	_, err = internal.DB.AddOrReplace("banned-event", TypeBannedEvent, &BannedEvent{
+		Id:     idb,
+		Reason: reason,
+	})
+
+	return err
+}
+
+func (internal *InternalDB) unbanEvent(id string) error {
+	idb, err := hex.DecodeString(id)
+	if err != nil {
+		return err
+	}
+	_, err = internal.DB.DeleteQuery(leafdb.ExactQuery("banned-event", idb[0:8]))
+	return err
+}
+
+func (internal *InternalDB) isBanned(id string) (bool, string) {
+	idb, err := hex.DecodeString(id)
+	if err != nil {
+		return false, ""
+	}
+
+	for record := range internal.DB.Query(leafdb.ExactQuery("banned-event", idb[0:8])) {
+		return true, record.(*BannedEvent).Reason
+	}
+
+	return false, ""
+}

main.go

@@ -129,6 +129,9 @@ func main() {
 		},
 	)
 
+	// admin
+	setupRelayManagement(relay)
+
 	// routes
 	mux := relay.Router()
 	mux.Handle("/njump/static/", http.StripPrefix("/njump/", http.FileServer(http.FS(static))))

management.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"context"
+	"slices"
+
+	"github.com/fiatjaf/khatru"
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/nip86"
+)
+
+func setupRelayManagement(relay *khatru.Relay) {
+	relay.ManagementAPI.RejectAPICall = append(relay.ManagementAPI.RejectAPICall,
+		func(ctx context.Context, mp nip86.MethodParams) (reject bool, msg string) {
+			if slices.Contains(s.TrustedPubKeys, khatru.GetAuthed(ctx)) {
+				return false, ""
+			}
+			return true, "you are not a trusted pubkey"
+		},
+	)
+	relay.ManagementAPI.BanEvent = func(ctx context.Context, id, reason string) error {
+		log.Info().Str("id", id).Str("reason", reason).Msg("banning event")
+		ch, err := sys.Store.QueryEvents(ctx, nostr.Filter{IDs: []string{id}})
+		if err != nil {
+			return err
+		}
+
+		for evt := range ch {
+			sys.Store.DeleteEvent(ctx, evt)
+		}
+
+		if err := internal.banEvent(id, reason); err != nil {
+			return err
+		}
+
+		return nil
+	}
+	relay.ManagementAPI.AllowEvent = func(ctx context.Context, id, reason string) error {
+		log.Info().Str("id", id).Str("reason", reason).Msg("unbanning event")
+		if err := internal.unbanEvent(id); err != nil {
+			return err
+		}
+		return nil
+	}
+}

render_event.go

@@ -72,6 +72,14 @@ func renderEvent(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if banned, reason := internal.isBanned(data.event.ID); banned {
+		w.Header().Set("Cache-Control", "max-age=60")
+		log.Warn().Err(err).Str("code", code).Str("reason", reason).Msg("event banned")
+		w.WriteHeader(http.StatusNotFound)
+		errorTemplate(ErrorPageParams{Errors: "event banned"}).Render(ctx, w)
+		return
+	}
+
 	// if we originally got a note code or an nevent with no hints
 	// augment the URL to point to an nevent with hints -- redirect
 	if p, ok := decoded.(nostr.EventPointer); (ok && p.Author == "" && len(p.Relays) == 0) || prefix == "note" {