Nasty hack against https://github.com/matrix-org/dendrite/issues/2983

[xonotic/xonotic.git] / misc / infrastructure / powerbot / powerlevels.go

diff --git a/misc/infrastructure/powerbot/powerlevels.go b/misc/infrastructure/powerbot/powerlevels.go
index 53398da73615a9eac9d8b3748f6de1a5c204659b..7e480eb4f54b7fa60f099b885b992a9e230848db 100644 (file)
--- a/misc/infrastructure/powerbot/powerlevels.go
+++ b/misc/infrastructure/powerbot/powerlevels.go
@@ -7,6 +7,7 @@ import (
        "maunium.net/go/mautrix"
        "maunium.net/go/mautrix/event"
        "maunium.net/go/mautrix/id"
+       "reflect"
        "time"
 )
 
@@ -173,7 +174,7 @@ func syncPowerLevels(client *mautrix.Client, room id.RoomID, roomGroup []id.Room
        if dirty {
                diff := cmp.Diff(roomLevels.Users, newRoomLevels.Users)
                log.Printf("room %v power level update:\n%v", room, diff)
-               _, err := client.SendStateEvent(room, event.StatePowerLevels, "", newRoomLevels)
+               _, err := client.SendStateEvent(room, event.StatePowerLevels, "", makeDefaultsExplicit(&newRoomLevels))
                if err != nil {
                        log.Printf("Failed to update power levels: %v", err)
                }
@@ -181,3 +182,36 @@ func syncPowerLevels(client *mautrix.Client, room id.RoomID, roomGroup []id.Room
                log.Printf("room %v nothing to update", room)
        }
 }
+
+type powerLevelsWithDefaults struct {
+       // This struct is a copy of the public stuff in event.PowerLevelsEventContent,
+       // but with omitempty removed on users_default and events_default to work around
+       // https://github.com/matrix-org/dendrite/issues/2983
+       Users           map[id.UserID]int              `json:"users"`
+       UsersDefault    int                            `json:"users_default,omitempty"`
+       Events          map[string]int                 `json:"events"`
+       EventsDefault   int                            `json:"events_default,omitempty"`
+       Notifications   *event.NotificationPowerLevels `json:"notifications,omitempty"`
+       StateDefaultPtr *int                           `json:"state_default,omitempty"`
+       InvitePtr       *int                           `json:"invite,omitempty"`
+       KickPtr         *int                           `json:"kick,omitempty"`
+       BanPtr          *int                           `json:"ban,omitempty"`
+       RedactPtr       *int                           `json:"redact,omitempty"`
+       HistoricalPtr   *int                           `json:"historical,omitempty"`
+}
+
+func makeDefaultsExplicit(roomLevels *event.PowerLevelsEventContent) *powerLevelsWithDefaults {
+       // Copying over all exported fields using reflect.
+       // Doing it this way so if a new field is added to event.PowerLevelsEventContent, this code panics.
+       var withDefaults powerLevelsWithDefaults
+       src := reflect.ValueOf(roomLevels).Elem()
+       dst := reflect.ValueOf(&withDefaults).Elem()
+       for i := 0; i < src.Type().NumField(); i++ {
+               srcField := src.Type().Field(i)
+               if !srcField.IsExported() {
+                       continue
+               }
+               dst.FieldByName(srcField.Name).Set(src.Field(i))
+       }
+       return &withDefaults
+}