fix: record-and-playback/core/Gemfile & record-and-playback/core/Gemfile.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-REXML-7814166

.github/ISSUE_TEMPLATE/docs-issue.md

@@ -13,7 +13,7 @@ This issue tracker is only for bbb development or docs related issues.-->
 **Link to the portion of the docs that is out of date**
 If applicable, link to the section of the docs that is out of date.
 
-**Describe what you belive the correct version should be**
+**Describe what you believe the correct version should be**
 
 **Screenshots**
 If applicable, add screenshots to help explain your concern.

.github/workflows/automated-tests.yml

@@ -52,7 +52,7 @@ jobs:
           - package: bbb-playback-record
             build-list: bbb-playback bbb-playback-notes bbb-playback-podcast bbb-playback-presentation bbb-playback-screenshare bbb-playback-video bbb-record-core
           - package: bbb-etherpad
-            cache-files-list: bbb-etherpad.placeholder.sh build/packages-template/bbb-etherpad
+            cache-files-list: bbb-etherpad.placeholder.sh
             cache-urls-list: https://api.github.com/repos/mconf/ep_pad_ttl/commits https://api.github.com/repos/alangecker/bbb-etherpad-plugin/commits https://api.github.com/repos/mconf/ep_redis_publisher/commits https://api.github.com/repos/alangecker/bbb-etherpad-skin/commits
           - package: bbb-web
             cache-files-list: bigbluebutton-web bbb-common-message bbb-common-web
@@ -63,11 +63,11 @@ jobs:
             cache-files-list: bigbluebutton-html5
           - package: bbb-freeswitch
             build-list: bbb-freeswitch-core bbb-freeswitch-sounds
-            cache-files-list: freeswitch.placeholder.sh build/packages-template/bbb-freeswitch-core build/packages-template/bbb-freeswitch-sounds
+            cache-files-list: freeswitch.placeholder.sh
             cache-urls-list: http://bigbluebutton.org/downloads/sounds.tar.gz
           - package: bbb-webrtc
             build-list: bbb-webrtc-sfu bbb-webrtc-recorder
-            cache-files-list: bbb-webrtc-sfu.placeholder.sh bbb-webrtc-recorder.placeholder.sh build/packages-template/bbb-webrtc-sfu build/packages-template/bbb-webrtc-recorder
+            cache-files-list: bbb-webrtc-sfu.placeholder.sh bbb-webrtc-recorder.placeholder.sh
           - package: others
             build-list: bbb-mkclean bbb-pads bbb-libreoffice-docker bbb-transcription-controller bigbluebutton
     steps:
@@ -76,7 +76,9 @@ jobs:
         uses: ./.github/actions/merge-branches
       - name: Set cache-key vars
         run: |
-          echo "CACHE_KEY_FILES=$(echo '${{ matrix.cache-files-list }} .gitlab-ci.yml build/deb-helper.sh' | xargs -n1 git log -1 --format=%h -- | tr '\n' '-' | sed 's/-$//')" >> $GITHUB_ENV
+          BUILD_DIRS="$(echo '${{ matrix.build-list || matrix.package }}' | sed 's/[^ ]\+/build\/packages-template\/&/g')"
+          echo "Including build dirs: $BUILD_DIRS"
+          echo "CACHE_KEY_FILES=$(echo '${{ matrix.cache-files-list }} '$BUILD_DIRS' .gitlab-ci.yml build/deb-helper.sh' | xargs -n1 git log -1 --format=%h -- | tr '\n' '-' | sed 's/-$//')" >> $GITHUB_ENV
           echo "CACHE_KEY_URLS=$(echo '${{ matrix.cache-urls-list }}' | xargs -r -n 1 curl -Is | grep -i 'Last-Modified' | md5sum | cut -c1-10)" >> $GITHUB_ENV
           cat bigbluebutton-config/bigbluebutton-release >> $GITHUB_ENV
           echo "FORCE_GIT_REV=0" >> $GITHUB_ENV #used by setup.sh

akka-bbb-apps/build.sbt

@@ -75,5 +75,6 @@ daemonUser in Linux := user
 daemonGroup in Linux := group
 
 javaOptions in Universal ++= Seq("-J-Xms130m", "-J-Xmx256m", "-Dconfig.file=/etc/bigbluebutton/bbb-apps-akka.conf", "-Dlogback.configurationFile=conf/logback.xml")
+javaOptions in reStart ++= Seq("-Dconfig.file=/etc/bigbluebutton/bbb-apps-akka.conf", "-Dlogback.configurationFile=conf/logback.xml")
 
 debianPackageDependencies in Debian ++= Seq("java17-runtime-headless", "bash")

akka-bbb-apps/project/Dependencies.scala

@@ -17,7 +17,7 @@ object Dependencies {
     val akkaHttpVersion = "10.2.7"
     val gson = "2.8.9"
     val jackson = "2.13.5"
-    val logback = "1.2.11"
+    val logback = "1.2.13"
     val quicklens = "1.7.5"
     val spray = "1.3.6"
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/LockSettingsUtil.scala

@@ -1,9 +1,10 @@
 package org.bigbluebutton
 
-import org.bigbluebutton.common2.msgs.{ BbbCommonEnvCoreMsg, BbbCoreEnvelope, BbbCoreHeaderWithMeetingId, MessageTypes, MuteUserInVoiceConfSysMsg, MuteUserInVoiceConfSysMsgBody, Routing }
+import org.bigbluebutton.common2.msgs.{ BbbCommonEnvCoreMsg, BbbCoreEnvelope, BbbCoreHeaderWithMeetingId, MessageTypes, Routing }
 import org.bigbluebutton.core.running.{ LiveMeeting, OutMsgRouter }
 import org.bigbluebutton.core2.{ MeetingStatus2x }
 import org.bigbluebutton.core.apps.webcam.CameraHdlrHelpers
+import org.bigbluebutton.core.apps.voice.VoiceApp
 import org.bigbluebutton.core.models.{
   Roles,
   Users2x,
@@ -16,19 +17,19 @@ import org.bigbluebutton.core.models.{
 
 object LockSettingsUtil {
 
-  private def muteUserInVoiceConf(liveMeeting: LiveMeeting, outGW: OutMsgRouter, vu: VoiceUserState, mute: Boolean): Unit = {
-    val routing = Routing.addMsgToClientRouting(MessageTypes.BROADCAST_TO_MEETING, liveMeeting.props.meetingProp.intId, vu.intId)
-    val envelope = BbbCoreEnvelope(MuteUserInVoiceConfSysMsg.NAME, routing)
-    val header = BbbCoreHeaderWithMeetingId(MuteUserInVoiceConfSysMsg.NAME, liveMeeting.props.meetingProp.intId)
-
-    val body = MuteUserInVoiceConfSysMsgBody(liveMeeting.props.voiceProp.voiceConf, vu.voiceUserId, mute)
-    val event = MuteUserInVoiceConfSysMsg(header, body)
-    val msgEvent = BbbCommonEnvCoreMsg(envelope, event)
-
-    outGW.send(msgEvent)
+  private def muteUserInVoiceConf(
+      liveMeeting: LiveMeeting,
+      outGW:       OutMsgRouter,
+      vu:          VoiceUserState, mute: Boolean
+  )(implicit context: akka.actor.ActorContext): Unit = {
+    VoiceApp.muteUserInVoiceConf(liveMeeting, outGW, vu.intId, mute)
   }
 
-  private def applyMutingOfUsers(disableMic: Boolean, liveMeeting: LiveMeeting, outGW: OutMsgRouter): Unit = {
+  private def applyMutingOfUsers(
+      disableMic:  Boolean,
+      liveMeeting: LiveMeeting,
+      outGW:       OutMsgRouter
+  )(implicit context: akka.actor.ActorContext): Unit = {
     VoiceUsers.findAll(liveMeeting.voiceUsers) foreach { vu =>
       Users2x.findWithIntId(liveMeeting.users2x, vu.intId).foreach { user =>
         if (user.role == Roles.VIEWER_ROLE && !vu.listenOnly && user.locked) {
@@ -44,12 +45,20 @@ object LockSettingsUtil {
     }
   }
 
-  def enforceLockSettingsForAllVoiceUsers(liveMeeting: LiveMeeting, outGW: OutMsgRouter): Unit = {
+  def enforceLockSettingsForAllVoiceUsers(
+      liveMeeting: LiveMeeting,
+      outGW:       OutMsgRouter
+  )(implicit context: akka.actor.ActorContext): Unit = {
     val permissions = MeetingStatus2x.getPermissions(liveMeeting.status)
     applyMutingOfUsers(permissions.disableMic, liveMeeting, outGW)
   }
 
-  def enforceLockSettingsForVoiceUser(voiceUser: VoiceUserState, liveMeeting: LiveMeeting, outGW: OutMsgRouter): Unit = {
+  def enforceLockSettingsForVoiceUser(
+      voiceUser:   VoiceUserState,
+      liveMeeting: LiveMeeting,
+      outGW:       OutMsgRouter
+  )(implicit context: akka.actor.ActorContext): Unit = {
+
     val permissions = MeetingStatus2x.getPermissions(liveMeeting.status)
     if (permissions.disableMic) {
       Users2x.findWithIntId(liveMeeting.users2x, voiceUser.intId).foreach { user =>
@@ -65,7 +74,11 @@ object LockSettingsUtil {
     }
   }
 
-  private def enforceListenOnlyUserIsMuted(intUserId: String, liveMeeting: LiveMeeting, outGW: OutMsgRouter): Unit = {
+  private def enforceListenOnlyUserIsMuted(
+      intUserId:   String,
+      liveMeeting: LiveMeeting,
+      outGW:       OutMsgRouter
+  )(implicit context: akka.actor.ActorContext): Unit = {
     val voiceUser = VoiceUsers.findWithIntId(liveMeeting.voiceUsers, intUserId)
     voiceUser.foreach { vu =>
       // Make sure that listen only user is muted. (ralam dec 6, 2019

akka-bbb-apps/src/main/scala/org/bigbluebutton/SystemConfiguration.scala

@@ -10,6 +10,7 @@ trait SystemConfiguration {
   lazy val bbbWebPort = Try(config.getInt("services.bbbWebPort")).getOrElse(8888)
   lazy val bbbWebAPI = Try(config.getString("services.bbbWebAPI")).getOrElse("localhost")
   lazy val bbbWebSharedSecret = Try(config.getString("services.sharedSecret")).getOrElse("changeme")
+  lazy val checkSumAlgorithmForBreakouts = Try(config.getString("services.checkSumAlgorithmForBreakouts")).getOrElse("sha256")
   lazy val bbbWebModeratorPassword = Try(config.getString("services.moderatorPassword")).getOrElse("changeme")
   lazy val bbbWebViewerPassword = Try(config.getString("services.viewerPassword")).getOrElse("changeme")
   lazy val keysExpiresInSec = Try(config.getInt("redis.keyExpiry")).getOrElse(14 * 86400) // 14 days
@@ -42,6 +43,7 @@ trait SystemConfiguration {
   lazy val ejectRogueVoiceUsers = Try(config.getBoolean("voiceConf.ejectRogueVoiceUsers")).getOrElse(true)
   lazy val dialInApprovalAudioPath = Try(config.getString("voiceConf.dialInApprovalAudioPath")).getOrElse("ivr/ivr-please_hold_while_party_contacted.wav")
   lazy val toggleListenOnlyAfterMuteTimer = Try(config.getInt("voiceConf.toggleListenOnlyAfterMuteTimer")).getOrElse(4)
+  lazy val transparentListenOnlyThreshold = Try(config.getInt("voiceConf.transparentListenOnlyThreshold")).getOrElse(0)
 
   lazy val recordingChapterBreakLengthInMinutes = Try(config.getInt("recording.chapterBreakLengthInMinutes")).getOrElse(0)
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/BreakoutModel.scala

@@ -18,8 +18,12 @@ object BreakoutModel {
       captureSlides: Boolean,
       captureNotesFilename: String,
       captureSlidesFilename: String,
+      allPages: Boolean,
+      presId: String,
+      sourcePresentationFilename: String,
   ): BreakoutRoom2x = {
-    new BreakoutRoom2x(id, externalId, name, parentId, sequence, shortName, isDefaultName, freeJoin, voiceConf, assignedUsers, Vector(), Vector(), None, false, captureNotes, captureSlides, captureNotesFilename, captureSlidesFilename)
+    new BreakoutRoom2x(id, externalId, name, parentId, sequence, shortName, isDefaultName, freeJoin, voiceConf, assignedUsers, Vector(), Vector(), None, false,
+      captureNotes, captureSlides, captureNotesFilename, captureSlidesFilename, allPages, presId, sourcePresentationFilename)
   }
 
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/audiocaptions/AudioCaptionsApp2x.scala

@@ -4,6 +4,7 @@ import akka.actor.ActorContext
 
 class AudioCaptionsApp2x(implicit val context: ActorContext)
   extends UpdateTranscriptPubMsgHdlr
+  with TranscriptionProviderErrorMsgHdlr
   with AudioFloorChangedVoiceConfEvtMsgHdlr {
 
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/audiocaptions/TranscriptionProviderErrorMsgHdlr.scala

@@ -0,0 +1,27 @@
+package org.bigbluebutton.core.apps.audiocaptions
+
+import org.bigbluebutton.common2.msgs._
+import org.bigbluebutton.core.bus.MessageBus
+import org.bigbluebutton.core.models.AudioCaptions
+import org.bigbluebutton.core.running.LiveMeeting
+
+trait TranscriptionProviderErrorMsgHdlr {
+  this: AudioCaptionsApp2x =>
+
+  def handleTranscriptionProviderErrorMsg(msg: TranscriptionProviderErrorMsg, liveMeeting: LiveMeeting, bus: MessageBus): Unit = {
+    val meetingId = liveMeeting.props.meetingProp.intId
+
+    def broadcastEvent(userId: String, errorCode: String, errorMessage: String): Unit = {
+      val routing = Routing.addMsgToClientRouting(MessageTypes.DIRECT, meetingId, "nodeJSapp")
+      val envelope = BbbCoreEnvelope(TranscriptionProviderErrorEvtMsg.NAME, routing)
+      val header = BbbClientMsgHeader(TranscriptionProviderErrorEvtMsg.NAME, meetingId, userId)
+      val body = TranscriptionProviderErrorEvtMsgBody(errorCode, errorMessage)
+      val event = TranscriptionProviderErrorEvtMsg(header, body)
+      val msgEvent = BbbCommonEnvCoreMsg(envelope, event)
+
+      bus.outGW.send(msgEvent)
+    }
+
+    broadcastEvent(msg.header.userId, msg.body.errorCode, msg.body.errorMessage)
+  }
+}

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/breakout/BreakoutApp2x.scala

@@ -4,6 +4,7 @@ import org.bigbluebutton.core.running.MeetingActor
 import java.net.URLEncoder
 import scala.collection.SortedSet
 import org.apache.commons.codec.digest.DigestUtils
+import org.bigbluebutton.SystemConfiguration
 
 trait BreakoutApp2x extends BreakoutRoomCreatedMsgHdlr
   with BreakoutRoomsListMsgHdlr
@@ -26,7 +27,7 @@ trait BreakoutApp2x extends BreakoutRoomCreatedMsgHdlr
 
 }
 
-object BreakoutRoomsUtil {
+object BreakoutRoomsUtil extends SystemConfiguration {
   def createMeetingIds(id: String, index: Int): (String, String) = {
     val timeStamp = System.currentTimeMillis()
     val externalHash = DigestUtils.sha1Hex(id.concat("-").concat(timeStamp.toString()).concat("-").concat(index.toString()))
@@ -48,7 +49,13 @@ object BreakoutRoomsUtil {
   //checksum() -- Return a checksum based on SHA-1 digest
   //
   def checksum(s: String): String = {
-    DigestUtils.sha256Hex(s);
+    checkSumAlgorithmForBreakouts match {
+      case "sha1"   => DigestUtils.sha1Hex(s);
+      case "sha256" => DigestUtils.sha256Hex(s);
+      case "sha384" => DigestUtils.sha384Hex(s);
+      case "sha512" => DigestUtils.sha512Hex(s);
+      case _        => DigestUtils.sha256Hex(s); // default
+    }
   }
 
   def calculateChecksum(apiCall: String, baseString: String, sharedSecret: String): String = {

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/breakout/CreateBreakoutRoomsCmdMsgHdlr.scala

@@ -40,26 +40,30 @@ trait CreateBreakoutRoomsCmdMsgHdlr extends RightsManagementTrait {
   }
 
   def processRequest(msg: CreateBreakoutRoomsCmdMsg, state: MeetingState2x): MeetingState2x = {
-
-    val presId = getPresentationId(state)
-    val presSlide = getPresentationSlide(state)
+    val presId = getPresentationId(state) // The current presentation
+    val presSlide = getPresentationSlide(state) // The current slide
     val parentId = liveMeeting.props.meetingProp.intId
     var rooms = new collection.immutable.HashMap[String, BreakoutRoom2x]
 
     var i = 0
     for (room <- msg.body.rooms) {
+      val roomPresId = if (room.presId.isEmpty) presId else room.presId;
+
       i += 1
       val (internalId, externalId) = BreakoutRoomsUtil.createMeetingIds(liveMeeting.props.meetingProp.intId, i)
       val voiceConf = BreakoutRoomsUtil.createVoiceConfId(liveMeeting.props.voiceProp.voiceConf, i)
 
       val breakout = BreakoutModel.create(parentId, internalId, externalId, room.name, room.sequence, room.shortName,
                                           room.isDefaultName, room.freeJoin, voiceConf, room.users, msg.body.captureNotes,
-                                          msg.body.captureSlides, room.captureNotesFilename, room.captureSlidesFilename)
+                                          msg.body.captureSlides, room.captureNotesFilename, room.captureSlidesFilename,
+                                          room.allPages, roomPresId, room.sourcePresentationFilename)
 
       rooms = rooms + (breakout.id -> breakout)
     }
 
     for (breakout <- rooms.values.toVector) {
+      val roomSlides = if (breakout.allPages) -1 else presSlide;
+
       val roomDetail = new BreakoutRoomDetail(
         breakout.id, breakout.name,
         liveMeeting.props.meetingProp.intId,
@@ -72,7 +76,10 @@ trait CreateBreakoutRoomsCmdMsgHdlr extends RightsManagementTrait {
         msg.body.durationInMinutes * 60,
         liveMeeting.props.password.moderatorPass,
         liveMeeting.props.password.viewerPass,
-        presId, presSlide, msg.body.record,
+        breakout.presId,
+        roomSlides,
+        breakout.sourcePresentationFilename,
+        msg.body.record,
         liveMeeting.props.breakoutProps.privateChatEnabled,
         breakout.captureNotes,
         breakout.captureSlides,

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/layout/BroadcastLayoutMsgHdlr.scala

@@ -5,6 +5,7 @@ import org.bigbluebutton.core.models.{ Layouts, LayoutsType }
 import org.bigbluebutton.core.running.OutMsgRouter
 import org.bigbluebutton.core2.MeetingStatus2x
 import org.bigbluebutton.core.apps.{ PermissionCheck, RightsManagementTrait }
+import org.bigbluebutton.core2.message.senders.{ MsgBuilder }
 
 trait BroadcastLayoutMsgHdlr extends RightsManagementTrait {
   this: LayoutApp2x =>
@@ -58,5 +59,18 @@ trait BroadcastLayoutMsgHdlr extends RightsManagementTrait {
     val msgEvent = BbbCommonEnvCoreMsg(envelope, event)
 
     outGW.send(msgEvent)
+
+    if (body.pushLayout) {
+      val notifyEvent = MsgBuilder.buildNotifyUserInMeetingEvtMsg(
+        fromUserId,
+        liveMeeting.props.meetingProp.intId,
+        "info",
+        "user",
+        "app.layoutUpdate.label",
+        "Notification to when the presenter changes size of cams",
+        Vector()
+      )
+      outGW.send(notifyEvent)
+    }
   }
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/pads/PadUpdatePubMsgHdlr.scala

@@ -21,7 +21,7 @@ trait PadUpdatePubMsgHdlr {
       bus.outGW.send(msgEvent)
     }
 
-    if (Pads.hasAccess(liveMeeting, msg.body.externalId, msg.header.userId)) {
+    if (Pads.hasAccess(liveMeeting, msg.body.externalId, msg.header.userId) || msg.body.transcript == true) {
       Pads.getGroup(liveMeeting.pads, msg.body.externalId) match {
         case Some(group) => broadcastEvent(group.groupId, msg.body.externalId, msg.body.text)
         case _           =>

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/presentationpod/MakePresentationDownloadReqMsgHdlr.scala

@@ -143,7 +143,7 @@ trait MakePresentationDownloadReqMsgHdlr extends RightsManagementTrait {
       && m.body.fileStateType == "Converted") {
       val reason = "Converted presentation download disabled for this meeting. (PDF format)"
       PermissionCheck.ejectUserForFailedPermission(meetingId, userId, reason, bus.outGW, liveMeeting)
-    } else if (permissionFailed(PermissionCheck.MOD_LEVEL, PermissionCheck.VIEWER_LEVEL, liveMeeting.users2x, userId)) {
+    } else if (permissionFailed(PermissionCheck.GUEST_LEVEL, PermissionCheck.PRESENTER_LEVEL, liveMeeting.users2x, userId)) {
       val reason = "No permission to download presentation."
       PermissionCheck.ejectUserForFailedPermission(meetingId, userId, reason, bus.outGW, liveMeeting)
     } else if (currentPres.isEmpty) {

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/ChangeUserEmojiCmdMsgHdlr.scala

@@ -29,32 +29,36 @@ trait ChangeUserEmojiCmdMsgHdlr extends RightsManagementTrait {
       msg.header.userId
     )
 
-    val initialEmojiState = Users2x.findWithIntId(liveMeeting.users2x, msg.body.userId).get.emoji
-    val nextEmojiState = msg.body.emoji
+    for {
+      user <- Users2x.findWithIntId(liveMeeting.users2x, msg.body.userId)
+    } yield {
+      val initialEmojiState = user.emoji
+      val nextEmojiState = msg.body.emoji
 
-    if (isUserSettingOwnEmoji
-      || isUserModerator && nextEmojiState.equals("none")
-      || isUserPresenter && initialEmojiState.equals("raiseHand") && nextEmojiState.equals("none")) {
-      for {
-        uvo <- Users2x.setEmojiStatus(liveMeeting.users2x, msg.body.userId, msg.body.emoji)
-      } yield {
-        outGW.send(MsgBuilder.buildUserEmojiChangedEvtMsg(liveMeeting.props.meetingProp.intId, msg.body.userId, msg.body.emoji))
+      if (isUserSettingOwnEmoji
+        || isUserModerator && nextEmojiState.equals("none")
+        || isUserPresenter && initialEmojiState.equals("raiseHand") && nextEmojiState.equals("none")) {
+        for {
+          uvo <- Users2x.setEmojiStatus(liveMeeting.users2x, msg.body.userId, msg.body.emoji)
+        } yield {
+          outGW.send(MsgBuilder.buildUserEmojiChangedEvtMsg(liveMeeting.props.meetingProp.intId, msg.body.userId, msg.body.emoji))
+
+          if (initialEmojiState == "raiseHand" || nextEmojiState == "raiseHand") {
+            Users2x.setUserRaiseHand(liveMeeting.users2x, msg.body.userId, msg.body.emoji == "raiseHand")
+            outGW.send(MsgBuilder.buildUserRaiseHandChangedEvtMsg(liveMeeting.props.meetingProp.intId, msg.body.userId, msg.body.emoji == "raiseHand"))
+          }
+
+          if (initialEmojiState == "away" || nextEmojiState == "away") {
+            Users2x.setUserAway(liveMeeting.users2x, msg.body.userId, msg.body.emoji == "away")
+            outGW.send(MsgBuilder.buildUserAwayChangedEvtMsg(liveMeeting.props.meetingProp.intId, msg.body.userId, msg.body.emoji == "away"))
+          }
 
-        if (initialEmojiState == "raiseHand" || nextEmojiState == "raiseHand") {
-          Users2x.setUserRaiseHand(liveMeeting.users2x, msg.body.userId, msg.body.emoji == "raiseHand")
-          outGW.send(MsgBuilder.buildUserRaiseHandChangedEvtMsg(liveMeeting.props.meetingProp.intId, msg.body.userId, msg.body.emoji == "raiseHand"))
         }
-
-        if (initialEmojiState == "away" || nextEmojiState == "away") {
-          Users2x.setUserAway(liveMeeting.users2x, msg.body.userId, msg.body.emoji == "away")
-          outGW.send(MsgBuilder.buildUserAwayChangedEvtMsg(liveMeeting.props.meetingProp.intId, msg.body.userId, msg.body.emoji == "away"))
-        }
-
+      } else {
+        val meetingId = liveMeeting.props.meetingProp.intId
+        val reason = "No permission to clear change user emoji status."
+        PermissionCheck.ejectUserForFailedPermission(meetingId, msg.header.userId, reason, outGW, liveMeeting)
       }
-    } else {
-      val meetingId = liveMeeting.props.meetingProp.intId
-      val reason = "No permission to clear change user emoji status."
-      PermissionCheck.ejectUserForFailedPermission(meetingId, msg.header.userId, reason, outGW, liveMeeting)
     }
   }
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/ChangeUserRoleCmdMsgHdlr.scala

@@ -30,7 +30,7 @@ trait ChangeUserRoleCmdMsgHdlr extends RightsManagementTrait {
         } yield {
           RegisteredUsers.updateUserRole(liveMeeting.registeredUsers, u, userRole)
         }
-        val promoteGuest = !liveMeeting.props.usersProp.authenticatedGuest
+        val promoteGuest = !liveMeeting.props.usersProp.authenticatedGuest || liveMeeting.props.usersProp.allowPromoteGuestToModerator
         if (msg.body.role == Roles.MODERATOR_ROLE && (!uvo.guest || promoteGuest)) {
           // Promote non-guest users.
           val notifyEvent = MsgBuilder.buildNotifyUserInMeetingEvtMsg(

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/LockUserChatInMeetingCmdMsgHdlr.scala

@@ -0,0 +1,36 @@
+package org.bigbluebutton.core.apps.users
+
+import org.bigbluebutton.LockSettingsUtil
+import org.bigbluebutton.common2.msgs._
+import org.bigbluebutton.core.models.{ Users2x, VoiceUsers }
+import org.bigbluebutton.core.running.{ MeetingActor, OutMsgRouter }
+import org.bigbluebutton.core.apps.{ PermissionCheck, RightsManagementTrait }
+
+trait LockUserChatInMeetingCmdMsgHdlr extends RightsManagementTrait {
+  this: MeetingActor =>
+
+  val outGW: OutMsgRouter
+
+  def handleLockUserChatInMeetingCmdMsg(msg: LockUserChatInMeetingCmdMsg) {
+
+    def build(meetingId: String, userId: String, isLocked: Boolean): BbbCommonEnvCoreMsg = {
+      val routing = Routing.addMsgToClientRouting(MessageTypes.BROADCAST_TO_MEETING, meetingId, userId)
+      val envelope = BbbCoreEnvelope(LockUserChatInMeetingEvtMsg.NAME, routing)
+      val body = LockUserChatInMeetingEvtMsgBody(userId, isLocked)
+      val header = BbbClientMsgHeader(LockUserChatInMeetingEvtMsg.NAME, meetingId, userId)
+      val event = LockUserChatInMeetingEvtMsg(header, body)
+
+      BbbCommonEnvCoreMsg(envelope, event)
+    }
+
+    if (permissionFailed(PermissionCheck.MOD_LEVEL, PermissionCheck.VIEWER_LEVEL, liveMeeting.users2x, msg.header.userId)) {
+      val meetingId = liveMeeting.props.meetingProp.intId
+      val reason = "No permission to lock user chat in meeting."
+      PermissionCheck.ejectUserForFailedPermission(meetingId, msg.header.userId, reason, outGW, liveMeeting)
+    } else {
+      log.info("Lock user chat. meetingId=" + props.meetingProp.intId + " userId=" + msg.body.userId + " isLocked=" + msg.body.isLocked)
+      val event = build(props.meetingProp.intId, msg.body.userId, msg.body.isLocked)
+      outGW.send(event)
+    }
+  }
+}

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/MuteUserCmdMsgHdlr.scala

@@ -2,6 +2,7 @@ package org.bigbluebutton.core.apps.users
 
 import org.bigbluebutton.common2.msgs.MuteUserCmdMsg
 import org.bigbluebutton.core.apps.{ PermissionCheck, RightsManagementTrait }
+import org.bigbluebutton.core.apps.voice.VoiceApp
 import org.bigbluebutton.core.models.{ Roles, Users2x, VoiceUsers }
 import org.bigbluebutton.core.running.{ LiveMeeting, OutMsgRouter }
 import org.bigbluebutton.core2.MeetingStatus2x
@@ -51,13 +52,12 @@ trait MuteUserCmdMsgHdlr extends RightsManagementTrait {
         } else {
           if (u.muted != msg.body.mute) {
             log.info("Send mute user request. meetingId=" + meetingId + " userId=" + u.intId + " user=" + u)
-            val event = MsgBuilder.buildMuteUserInVoiceConfSysMsg(
-              meetingId,
-              voiceConf,
-              u.voiceUserId,
+            VoiceApp.muteUserInVoiceConf(
+              liveMeeting,
+              outGW,
+              u.intId,
               msg.body.mute
             )
-            outGW.send(event)
           }
         }
       }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/RegisterUserReqMsgHdlr.scala

@@ -57,12 +57,22 @@ trait RegisterUserReqMsgHdlr {
 
     val regUser = RegisteredUsers.create(msg.body.intUserId, msg.body.extUserId,
       msg.body.name, msg.body.role, msg.body.authToken,
-      msg.body.avatarURL, ColorPicker.nextColor(liveMeeting.props.meetingProp.intId), msg.body.guest, msg.body.authed, guestStatus, msg.body.excludeFromDashboard, false)
+      msg.body.avatarURL,
+      msg.body.webcamBackgroundURL,
+      ColorPicker.nextColor(liveMeeting.props.meetingProp.intId), msg.body.guest, msg.body.authed, guestStatus, msg.body.excludeFromDashboard, false)
 
     checkUserConcurrentAccesses(regUser)
 
     RegisteredUsers.add(liveMeeting.registeredUsers, regUser)
 
+    val userCustomData: Map[String, String] = msg.body.userCustomData.map {
+      case (k, v) => k -> v.toString
+    }
+
+    if (userCustomData.nonEmpty) {
+      RegisteredUsers.updateUserCustomData(liveMeeting.registeredUsers, regUser, userCustomData)
+    }
+
     log.info("Register user success. meetingId=" + liveMeeting.props.meetingProp.intId
       + " userId=" + msg.body.extUserId + " user=" + regUser)
 
@@ -90,7 +100,7 @@ trait RegisterUserReqMsgHdlr {
         val g = GuestApprovedVO(regUser.id, GuestStatus.ALLOW)
         UsersApp.approveOrRejectGuest(liveMeeting, outGW, g, SystemUser.ID)
       case GuestStatus.WAIT =>
-        val guest = GuestWaiting(regUser.id, regUser.name, regUser.role, regUser.guest, regUser.avatarURL, regUser.color, regUser.authed, regUser.registeredOn)
+        val guest = GuestWaiting(regUser.id, regUser.name, regUser.role, regUser.guest, regUser.avatarURL, regUser.webcamBackgroundURL, regUser.color, regUser.authed, regUser.registeredOn)
         addGuestToWaitingForApproval(guest, liveMeeting.guestsWaiting)
         notifyModeratorsOfGuestWaiting(Vector(guest), liveMeeting.users2x, liveMeeting.props.meetingProp.intId)
         val notifyEvent = MsgBuilder.buildNotifyRoleInMeetingEvtMsg(

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/SetUserSpeechOptionsMsgHdlr.scala

@@ -0,0 +1,41 @@
+package org.bigbluebutton.core.apps.users
+
+import org.bigbluebutton.common2.msgs._
+import org.bigbluebutton.core.models.{ UserState, Users2x }
+import org.bigbluebutton.core.running.{ LiveMeeting, OutMsgRouter }
+import org.bigbluebutton.core.apps.{ PermissionCheck, RightsManagementTrait }
+import org.bigbluebutton.core.domain.MeetingState2x
+
+trait SetUserSpeechOptionsMsgHdlr extends RightsManagementTrait {
+  this: UsersApp =>
+
+  val liveMeeting: LiveMeeting
+  val outGW: OutMsgRouter
+
+  def handleSetUserSpeechOptionsReqMsg(msg: SetUserSpeechOptionsReqMsg): Unit = {
+    log.info("handleSetUserSpeechOptionsReqMsg: partialUtterances={} minUtteranceLength={} userId={}", msg.body.partialUtterances, msg.body.minUtteranceLength, msg.header.userId)
+
+    def broadcastUserSpeechOptionsChanged(user: UserState, partialUtterances: Boolean, minUtteranceLength: Int): Unit = {
+      val routingChange = Routing.addMsgToClientRouting(
+        MessageTypes.BROADCAST_TO_MEETING,
+        liveMeeting.props.meetingProp.intId, user.intId
+      )
+      val envelopeChange = BbbCoreEnvelope(UserSpeechOptionsChangedEvtMsg.NAME, routingChange)
+      val headerChange = BbbClientMsgHeader(UserSpeechOptionsChangedEvtMsg.NAME, liveMeeting.props.meetingProp.intId, user.intId)
+
+      val bodyChange = UserSpeechOptionsChangedEvtMsgBody(partialUtterances, minUtteranceLength)
+      val eventChange = UserSpeechOptionsChangedEvtMsg(headerChange, bodyChange)
+      val msgEventChange = BbbCommonEnvCoreMsg(envelopeChange, eventChange)
+      outGW.send(msgEventChange)
+    }
+
+    for {
+      user <- Users2x.findWithIntId(liveMeeting.users2x, msg.header.userId)
+    } yield {
+      var changeLocale: Option[UserState] = None;
+      //changeLocale = Users2x.setUserSpeechLocale(liveMeeting.users2x, msg.header.userId, msg.body.locale)
+      broadcastUserSpeechOptionsChanged(user, msg.body.partialUtterances, msg.body.minUtteranceLength)
+    }
+
+  }
+}

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/UsersApp.scala

@@ -150,6 +150,7 @@ class UsersApp(
   with RegisterUserReqMsgHdlr
   with ChangeUserRoleCmdMsgHdlr
   with SetUserSpeechLocaleMsgHdlr
+  with SetUserSpeechOptionsMsgHdlr
   with SyncGetUsersMeetingRespMsgHdlr
   with LogoutAndEndMeetingCmdMsgHdlr
   with SetRecordingStatusCmdMsgHdlr

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/users/UsersApp2x.scala

@@ -5,6 +5,7 @@ import org.bigbluebutton.core.running.MeetingActor
 trait UsersApp2x
   extends UserLeaveReqMsgHdlr
   with LockUserInMeetingCmdMsgHdlr
+  with LockUserChatInMeetingCmdMsgHdlr
   with LockUsersInMeetingCmdMsgHdlr
   with GetLockSettingsReqMsgHdlr
   with ChangeUserEmojiCmdMsgHdlr

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/voice/ListenOnlyModeToggledInSfuEvtMsgHdlr.scala

@@ -12,11 +12,34 @@ trait ListenOnlyModeToggledInSfuEvtMsgHdlr {
 
   def handleListenOnlyModeToggledInSfuEvtMsg(msg: ListenOnlyModeToggledInSfuEvtMsg): Unit = {
     for {
-      vu <- VoiceUsers.findWithIntId(liveMeeting.voiceUsers, msg.body.userId)
+      vu <- VoiceUsers.findWithIntIdAndCallerNum(
+        liveMeeting.voiceUsers,
+        msg.body.userId,
+        msg.body.callerNum
+      )
     } yield {
-      VoiceApp.holdChannelInVoiceConf(
+      // Do not execute if the command is asking for the channel to be HELD
+      // and the channel is already HELD. This is an edge case with the uuid_hold
+      // command being used through FSESL or fsapi where holding only works via
+      // the uuid_hold <toggle> subcommand, which may cause the channel to be the
+      // opposite of what we want.
+      // The unhold (uuid_hold off) command is not affected by this, but we don't
+      // want to send it if the channel is already unheld.
+      if ((msg.body.enabled && !vu.hold) || !msg.body.enabled) {
+        VoiceApp.holdChannelInVoiceConf(
+          liveMeeting,
+          outGW,
+          vu.uuid,
+          msg.body.enabled
+        )
+      }
+
+      // If the channel is already in the desired state, just make sure
+      // any pending mute or unmute commands are sent.
+      VoiceApp.handleChannelHoldChanged(
         liveMeeting,
         outGW,
+        msg.body.userId,
         vu.uuid,
         msg.body.enabled
       )

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/voice/UserJoinedVoiceConfEvtMsgHdlr.scala

@@ -34,8 +34,8 @@ trait UserJoinedVoiceConfEvtMsgHdlr extends SystemConfiguration {
 
     def registerUserInRegisteredUsers() = {
       val regUser = RegisteredUsers.create(msg.body.intId, msg.body.voiceUserId,
-        msg.body.callerIdName, Roles.VIEWER_ROLE, "", userColor,
-        "", true, true, GuestStatus.WAIT, true, false)
+        msg.body.callerIdName, Roles.VIEWER_ROLE, msg.body.intId, "", "",
+        userColor, true, true, GuestStatus.WAIT, true, false)
       RegisteredUsers.add(liveMeeting.registeredUsers, regUser)
     }
 
@@ -57,6 +57,7 @@ trait UserJoinedVoiceConfEvtMsgHdlr extends SystemConfiguration {
         presenter = false,
         locked = MeetingStatus2x.getPermissions(liveMeeting.status).lockOnJoin,
         avatar = "",
+        webcamBackground = "",
         color = userColor,
         clientType = "",
         pickExempted = false,
@@ -67,7 +68,7 @@ trait UserJoinedVoiceConfEvtMsgHdlr extends SystemConfiguration {
 
     def registerUserAsGuest() = {
       if (GuestsWaiting.findWithIntId(liveMeeting.guestsWaiting, msg.body.intId) == None) {
-        val guest = GuestWaiting(msg.body.intId, msg.body.callerIdName, Roles.VIEWER_ROLE, true, "", userColor, true, System.currentTimeMillis())
+        val guest = GuestWaiting(msg.body.intId, msg.body.callerIdName, Roles.VIEWER_ROLE, true, "", "", userColor, true, System.currentTimeMillis())
         GuestsWaiting.add(liveMeeting.guestsWaiting, guest)
         notifyModeratorsOfGuestWaiting(guest, liveMeeting.users2x, liveMeeting.props.meetingProp.intId)
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/voice/UserJoinedVoiceConfMessageHdlr.scala

@@ -6,47 +6,4 @@ trait UserJoinedVoiceConfMessageHdlr {
   this: MeetingActor =>
 
   val outGW: OutMsgRouter
-
-  /*
-  def startRecordingVoiceConference() {
-    if (Users.numUsersInVoiceConference(liveMeeting.users) == 1 &&
-      props.recordProp.record &&
-      !MeetingStatus2x.isVoiceRecording(liveMeeting.status)) {
-      MeetingStatus2x.startRecordingVoice(liveMeeting.status)
-      log.info("Send START RECORDING voice conf. meetingId=" + props.meetingProp.intId + " voice conf=" + props.voiceProp.voiceConf)
-      outGW.send(new StartRecordingVoiceConf(props.meetingProp.intId, props.recordProp.record, props.voiceProp.voiceConf))
-    }
-  }
-
-
-
-  def handleUserJoinedVoiceConfMessage(msg: UserJoinedVoiceConfMessage) = {
-    log.info("Received user joined voice. meetingId=" + props.meetingProp.intId + " callername=" + msg.callerIdName
-      + " userId=" + msg.userId + " extUserId=" + msg.externUserId)
-
-    Users.findWithId(msg.userId, liveMeeting.users) match {
-      case Some(user) => {
-        // this is used to restore the mute state on reconnect
-        val previouslyMuted = user.voiceUser.muted
-
-        val nu = Users.restoreMuteState(user, liveMeeting.users, msg.voiceUserId, msg.userId, msg.callerIdName,
-          msg.callerIdNum, msg.muted, msg.talking, msg.avatarURL, msg.listenOnly)
-
-        log.info("User joined voice. meetingId=" + props.meetingProp.intId + " userId=" + user.id + " user=" + nu)
-        outGW.send(new UserJoinedVoice(props.meetingProp.intId, props.recordProp.record, props.voiceProp.voiceConf, nu))
-
-        if (MeetingStatus2x.isMeetingMuted(liveMeeting.status) || previouslyMuted) {
-          outGW.send(new MuteVoiceUser(props.meetingProp.intId, props.recordProp.record,
-            nu.id, nu.id, props.voiceProp.voiceConf,
-            nu.voiceUser.userId, true))
-        }
-
-        startRecordingVoiceConference()
-      }
-      case None => {
-        startRecordingVoiceConference()
-      }
-    }
-  }
-  */
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/voice/VoiceApp.scala

@@ -131,13 +131,14 @@ object VoiceApp extends SystemConfiguration {
         liveMeeting,
         outGW,
         mutedUser.intId,
+        mutedUser.callerNum,
         muted,
         toggleListenOnlyAfterMuteTimer
       )
 
       // If the user is muted or unmuted with an unheld channel, broadcast
       // the event right away.
-      // If the user is unmuted, but channel is held, we need to wait for the 
+      // If the user is unmuted, but channel is held, we need to wait for the
       // channel to be active again to broadcast the event. See
       // VoiceApp.handleChannelHoldChanged for this second case.
       if (muted || (!muted && !mutedUser.hold)) {
@@ -148,7 +149,6 @@ object VoiceApp extends SystemConfiguration {
           outGW
         )
       }
-
     }
   }
 
@@ -259,7 +259,7 @@ object VoiceApp extends SystemConfiguration {
       callingInto:  String,
       hold:         Boolean,
       uuid:         String  = "unused"
-  ): Unit = {
+  )(implicit context: akka.actor.ActorContext): Unit = {
 
     def broadcastEvent(voiceUserState: VoiceUserState): Unit = {
       val routing = Routing.addMsgToClientRouting(
@@ -322,8 +322,28 @@ object VoiceApp extends SystemConfiguration {
       hold,
       uuid
     )
+
+    val prevTransparentLOStatus = VoiceHdlrHelpers.transparentListenOnlyAllowed(
+      liveMeeting
+    )
+
     VoiceUsers.add(liveMeeting.voiceUsers, voiceUserState)
 
+    val newTransparentLOStatus = VoiceHdlrHelpers.transparentListenOnlyAllowed(
+      liveMeeting
+    )
+
+    if (prevTransparentLOStatus != newTransparentLOStatus) {
+      // If the transparent listen only mode was activated or deactivated
+      // we need to update the listen only mode for all users in the meeting
+      // that are not muted.
+      handleTransparentLOModeChange(
+        liveMeeting,
+        outGW,
+        newTransparentLOStatus
+      )
+    }
+
     broadcastEvent(voiceUserState)
 
     if (liveMeeting.props.meetingProp.isBreakout) {
@@ -472,27 +492,52 @@ object VoiceApp extends SystemConfiguration {
     }
   }
 
+  def handleTransparentLOModeChange(
+    liveMeeting: LiveMeeting,
+    outGW:       OutMsgRouter,
+    allowed:     Boolean,
+  )(implicit context: akka.actor.ActorContext): Unit = {
+    VoiceUsers.findAllMutedVoiceUsers(liveMeeting.voiceUsers) foreach { vu =>
+      toggleListenOnlyMode(
+        liveMeeting,
+        outGW,
+        vu.intId,
+        vu.callerNum,
+        allowed
+      )
+    }
+  }
+
   def toggleListenOnlyMode(
     liveMeeting:    LiveMeeting,
     outGW:          OutMsgRouter,
     userId:         String,
+    callerNum:      String,
     enabled:        Boolean,
     delay:          Int = 0
   )(implicit context: ActorContext): Unit = {
     implicit def executionContext = context.system.dispatcher
+    val allowed = VoiceHdlrHelpers.transparentListenOnlyAllowed(liveMeeting)
+    // Guarantee there are no other tasks for this channel
+    removeToggleListenOnlyTask(userId)
+
+    // If the meeting has not yet hit the minium amount of duplex channels
+    // for transparent listen only to be enabled, we don't need to do anything
+    if (!allowed && enabled) {
+      return
+    }
+
     def broacastEvent(): Unit = {
       val event = MsgBuilder.buildToggleListenOnlyModeSysMsg(
         liveMeeting.props.meetingProp.intId,
         liveMeeting.props.voiceProp.voiceConf,
         userId,
+        callerNum,
         enabled
       )
       outGW.send(event)
     }
 
-    // Guarantee there are no other tasks for this channel
-    removeToggleListenOnlyTask(userId)
-
     if (enabled && delay > 0) {
       // If we are enabling listen only mode, we wait a bit before actually
       // dispatching the command - the idea is that recently muted users
@@ -543,13 +588,15 @@ object VoiceApp extends SystemConfiguration {
       hold
     ) match {
       case Some(vu) =>
-        // Mute vs hold state mismatch, enforce hold state again. 
-        // Mute state is the predominant one here.
-        if (vu.muted != hold) {
+        // Mute vs hold state mismatch. Enforce it if the user is unmuted,
+        // but hold is active, to avoid the user being unable to talk when
+        // the channel is active again.
+        if (!vu.muted && vu.hold) {
           toggleListenOnlyMode(
             liveMeeting,
             outGW,
             intId,
+            vu.callerNum,
             vu.muted
           )
         }
@@ -566,4 +613,48 @@ object VoiceApp extends SystemConfiguration {
       case _ =>
     }
   }
+
+  def muteUserInVoiceConf(
+    liveMeeting:  LiveMeeting,
+    outGW:        OutMsgRouter,
+    userId:       String,
+    muted:         Boolean
+  )(implicit context: akka.actor.ActorContext): Unit = {
+    for {
+      u <- VoiceUsers.findWithIntId(
+        liveMeeting.voiceUsers,
+        userId
+      )
+      } yield {
+        if (u.muted != muted) {
+          val muteEvent = MsgBuilder.buildMuteUserInVoiceConfSysMsg(
+            liveMeeting.props.meetingProp.intId,
+            liveMeeting.props.voiceProp.voiceConf,
+            u.voiceUserId,
+            muted
+          )
+
+          // If we're unmuting, trigger a channel unhold -> toggle listen only
+          // mode -> unmute
+          if (!muted) {
+            holdChannelInVoiceConf(
+              liveMeeting,
+              outGW,
+              u.uuid,
+              muted
+            )
+            toggleListenOnlyMode(
+              liveMeeting,
+              outGW,
+              u.intId,
+              u.callerNum,
+              muted,
+              0
+            )
+          }
+
+          outGW.send(muteEvent)
+        }
+      }
+  }
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/voice/VoiceHdlrHelpers.scala

@@ -50,4 +50,14 @@ object VoiceHdlrHelpers extends SystemConfiguration {
       case _ => false
     }
   }
+
+  def transparentListenOnlyAllowed(liveMeeting: LiveMeeting): Boolean = {
+    // Transparent listen only meeting-wide activation threshold.
+    // Threshold is the number of muted duplex audio channels in a meeting.
+    // 0 means no threshold, all users are subject to it
+    val mutedDuplexChannels = VoiceUsers.findAllMutedVoiceUsers(liveMeeting.voiceUsers).length
+    val threshold = transparentListenOnlyThreshold
+
+    (threshold == 0) || (mutedDuplexChannels >= threshold)
+  }
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/whiteboard/SendWhiteboardAnnotationPubMsgHdlr.scala

@@ -52,11 +52,11 @@ trait SendWhiteboardAnnotationsPubMsgHdlr extends RightsManagementTrait {
     )
 
     if (isUserOneOfPermited || isUserAmongPresenters) {
-      println("============= Printing Sanitized annotations ============")
-      for (annotation <- msg.body.annotations) {
-        printAnnotationInfo(annotation)
-      }
-      println("============= Printed Sanitized annotations  ============")
+      // println("============= Printing Sanitized annotations ============")
+      // for (annotation <- msg.body.annotations) {
+      //   printAnnotationInfo(annotation)
+      // }
+      // println("============= Printed Sanitized annotations  ============")
       val annotations = sendWhiteboardAnnotations(msg.body.whiteboardId, msg.header.userId, msg.body.annotations, liveMeeting, isUserAmongPresenters, isUserModerator)
       broadcastEvent(msg, msg.body.whiteboardId, annotations, msg.body.html5InstanceId)
     } else {

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/domain/BreakoutRoom2x.scala

@@ -1,24 +1,27 @@
 package org.bigbluebutton.core.domain
 
 case class BreakoutRoom2x(
-    id:                    String,
-    externalId:            String,
-    name:                  String,
-    parentId:              String,
-    sequence:              Int,
-    shortName:             String,
-    isDefaultName:         Boolean,
-    freeJoin:              Boolean,
-    voiceConf:             String,
-    assignedUsers:         Vector[String],
-    users:                 Vector[BreakoutUser],
-    voiceUsers:            Vector[BreakoutVoiceUser],
-    startedOn:             Option[Long],
-    started:               Boolean,
-    captureNotes:          Boolean,
-    captureSlides:         Boolean,
-    captureNotesFilename:  String,
-    captureSlidesFilename: String,
+    id:                         String,
+    externalId:                 String,
+    name:                       String,
+    parentId:                   String,
+    sequence:                   Int,
+    shortName:                  String,
+    isDefaultName:              Boolean,
+    freeJoin:                   Boolean,
+    voiceConf:                  String,
+    assignedUsers:              Vector[String],
+    users:                      Vector[BreakoutUser],
+    voiceUsers:                 Vector[BreakoutVoiceUser],
+    startedOn:                  Option[Long],
+    started:                    Boolean,
+    captureNotes:               Boolean,
+    captureSlides:              Boolean,
+    captureNotesFilename:       String,
+    captureSlidesFilename:      String,
+    allPages:                   Boolean,
+    presId:                     String,
+    sourcePresentationFilename: String,
 ) {
 
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/models/AudioCaptions.scala

@@ -7,12 +7,10 @@ import org.bigbluebutton.SystemConfiguration
 object AudioCaptions extends SystemConfiguration {
   def setFloor(audioCaptions: AudioCaptions, userId: String) = audioCaptions.floor = userId
 
-  def isFloor(audioCaptions: AudioCaptions, userId: String) = audioCaptions.floor == userId
+  def isFloor(audioCaptions: AudioCaptions, userId: String) = true
 
   def parseTranscript(transcript: String): String = {
-    val words = transcript.split("\\s+") // Split on whitespaces
-    val lines = words.grouped(transcriptWords).toArray // Group each X words into lines
-    lines.takeRight(transcriptLines).map(l => l.mkString(" ")).mkString("\n") // Join the last X lines
+    transcript
   }
 
   /*

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/models/GuestsWaiting.scala

@@ -68,7 +68,7 @@ class GuestsWaiting {
   }
 }
 
-case class GuestWaiting(intId: String, name: String, role: String, guest: Boolean, avatar: String, color: String, authenticated: Boolean, registeredOn: Long)
+case class GuestWaiting(intId: String, name: String, role: String, guest: Boolean, avatar: String, webcamBackground: String, color: String, authenticated: Boolean, registeredOn: Long)
 case class GuestPolicy(policy: String, setBy: String)
 
 object GuestPolicyType {

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/models/RegisteredUsers.scala

@@ -5,7 +5,7 @@ import org.bigbluebutton.core.domain.BreakoutRoom2x
 
 object RegisteredUsers {
   def create(userId: String, extId: String, name: String, roles: String,
-             token: String, avatar: String, color: String, guest: Boolean, authenticated: Boolean,
+             token: String, avatar: String, webcamBackground: String, color: String, guest: Boolean, authenticated: Boolean,
              guestStatus: String, excludeFromDashboard: Boolean, loggedOut: Boolean): RegisteredUser = {
     new RegisteredUser(
       userId,
@@ -14,6 +14,7 @@ object RegisteredUsers {
       roles,
       token,
       avatar,
+      webcamBackground,
       color,
       guest,
       authenticated,
@@ -164,6 +165,12 @@ object RegisteredUsers {
     u
   }
 
+  def updateUserCustomData(users: RegisteredUsers, user: RegisteredUser, userCustomData: Map[String, String]): RegisteredUser = {
+    val u = user.modify(_.userCustomData).setTo(userCustomData)
+    users.save(u)
+    u
+  }
+
 }
 
 class RegisteredUsers {
@@ -192,6 +199,7 @@ case class RegisteredUser(
     role:                     String,
     authToken:                String,
     avatarURL:                String,
+    webcamBackgroundURL:      String,
     color:                    String,
     guest:                    Boolean,
     authed:                   Boolean,
@@ -202,6 +210,7 @@ case class RegisteredUser(
     joined:                   Boolean,
     banned:                   Boolean,
     loggedOut:                Boolean,
-    lastBreakoutRoom:         BreakoutRoom2x = null
+    lastBreakoutRoom:         BreakoutRoom2x = null,
+    userCustomData:           Map[String, String] = Map.empty
 )
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/models/Users2x.scala

@@ -407,20 +407,22 @@ case class UserState(
     guestStatus:           String,
     emoji:                 String,
     reactionEmoji:         String,
-    reactionChangedOn:     Long         = 0,
+    reactionChangedOn:     Long                = 0,
     raiseHand:             Boolean,
     away:                  Boolean,
     locked:                Boolean,
     presenter:             Boolean,
     avatar:                String,
+    webcamBackground:      String,
     color:                 String,
-    roleChangedOn:         Long         = System.currentTimeMillis(),
-    lastActivityTime:      Long         = System.currentTimeMillis(),
-    lastInactivityInspect: Long         = 0,
+    roleChangedOn:         Long                = System.currentTimeMillis(),
+    lastActivityTime:      Long                = System.currentTimeMillis(),
+    lastInactivityInspect: Long                = 0,
     clientType:            String,
     pickExempted:          Boolean,
     userLeftFlag:          UserLeftFlag,
-    speechLocale:          String       = ""
+    speechLocale:          String              = "",
+    userCustomData:        Map[String, String] = Map.empty
 )
 
 case class UserIdAndName(id: String, name: String)

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/models/VoiceUsers.scala

@@ -15,12 +15,25 @@ object VoiceUsers {
     users.toVector.find(u => u.uuid == uuid && u.intId == intId)
   }
 
+  def findWithIntIdAndCallerNum(users: VoiceUsers, intId: String, callerNum: String): Option[VoiceUserState] = {
+    // prlanzarin: This is a hack to allow for partial matching of callerNums.
+    // This is needed because the callerNums are incorrectly generated by
+    // FREESWITCH's ESL events when special characters are in place.
+    // e.g.: w_etc_0-bbbID-User;Semi (notice the semicolon) will be generated by
+    // FS as w_etc_0-bbbID-User (everything after the semicolon is ignored).
+    // We should review callerNum generation in the future as well as stop
+    // relying on it for session matching (use UUIDs or client session numbers instead).
+    users.toVector.find(u => u.intId == intId &&
+      (u.callerNum.startsWith(callerNum) || callerNum.startsWith(u.callerNum)))
+  }
+
   def findAll(users: VoiceUsers): Vector[VoiceUserState] = users.toVector
 
   def findAllNonListenOnlyVoiceUsers(users: VoiceUsers): Vector[VoiceUserState] = users.toVector.filter(u => u.listenOnly == false)
   def findAllListenOnlyVoiceUsers(users: VoiceUsers): Vector[VoiceUserState] = users.toVector.filter(u => u.listenOnly == true)
   def findAllFreeswitchCallers(users: VoiceUsers): Vector[VoiceUserState] = users.toVector.filter(u => u.calledInto == "freeswitch")
   def findAllKurentoCallers(users: VoiceUsers): Vector[VoiceUserState] = users.toVector.filter(u => u.calledInto == "kms")
+  def findAllMutedVoiceUsers(users: VoiceUsers): Vector[VoiceUserState] = users.toVector.filter(u => u.muted == true && u.listenOnly == false)
 
   def findAllBannedCallers(users: VoiceUsers): Vector[VoiceUserState] = users.bannedUsers.values.toVector
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/pubsub/senders/ReceivedJsonMsgHandlerActor.scala

@@ -113,6 +113,8 @@ class ReceivedJsonMsgHandlerActor(
         routeGenericMsg[ChangeUserMobileFlagReqMsg](envelope, jsonNode)
       case SetUserSpeechLocaleReqMsg.NAME =>
         routeGenericMsg[SetUserSpeechLocaleReqMsg](envelope, jsonNode)
+      case SetUserSpeechOptionsReqMsg.NAME =>
+        routeGenericMsg[SetUserSpeechOptionsReqMsg](envelope, jsonNode)
       case SelectRandomViewerReqMsg.NAME =>
         routeGenericMsg[SelectRandomViewerReqMsg](envelope, jsonNode)
 
@@ -384,6 +386,8 @@ class ReceivedJsonMsgHandlerActor(
       // Lock settings
       case LockUserInMeetingCmdMsg.NAME =>
         routeGenericMsg[LockUserInMeetingCmdMsg](envelope, jsonNode)
+      case LockUserChatInMeetingCmdMsg.NAME =>
+        routeGenericMsg[LockUserChatInMeetingCmdMsg](envelope, jsonNode)
       case ChangeLockSettingsInMeetingCmdMsg.NAME =>
         routeGenericMsg[ChangeLockSettingsInMeetingCmdMsg](envelope, jsonNode)
       case LockUsersInMeetingCmdMsg.NAME =>
@@ -404,6 +408,8 @@ class ReceivedJsonMsgHandlerActor(
       // AudioCaptions
       case UpdateTranscriptPubMsg.NAME =>
         routeGenericMsg[UpdateTranscriptPubMsg](envelope, jsonNode)
+      case TranscriptionProviderErrorMsg.NAME =>
+        routeGenericMsg[TranscriptionProviderErrorMsg](envelope, jsonNode)
 
       // GroupChats
       case GetGroupChatsReqMsg.NAME =>

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/record/events/ParticipantJoinRecordEvent.scala

@@ -19,8 +19,11 @@
 
 package org.bigbluebutton.core.record.events
 
+import spray.json._
+
 class ParticipantJoinRecordEvent extends AbstractParticipantRecordEvent {
   import ParticipantJoinRecordEvent._
+  import ParticipantJoinRecordEventJsonProtocol._
 
   setEvent("ParticipantJoinEvent")
 
@@ -43,6 +46,10 @@ class ParticipantJoinRecordEvent extends AbstractParticipantRecordEvent {
   def setRole(role: String) {
     eventMap.put(ROLE, role)
   }
+
+  def setUserdata(userCustomData: Map[String, String]): Unit = {
+    eventMap.put(USER_DATA, userCustomData.toJson.compactPrint)
+  }
 }
 
 object ParticipantJoinRecordEvent {
@@ -50,4 +57,9 @@ object ParticipantJoinRecordEvent {
   protected final val EXT_USER_ID = "externalUserId"
   protected final val NAME = "name"
   protected final val ROLE = "role"
+  protected final val USER_DATA = "userdata"
+}
+
+object ParticipantJoinRecordEventJsonProtocol extends DefaultJsonProtocol {
+
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/running/HandlerHelpers.scala

@@ -70,10 +70,12 @@ trait HandlerHelpers extends SystemConfiguration {
         presenter = false,
         locked = MeetingStatus2x.getPermissions(liveMeeting.status).lockOnJoin,
         avatar = regUser.avatarURL,
+        webcamBackground = regUser.webcamBackgroundURL,
         color = regUser.color,
         clientType = clientType,
         pickExempted = false,
-        userLeftFlag = UserLeftFlag(false, 0)
+        userLeftFlag = UserLeftFlag(false, 0),
+        userCustomData = regUser.userCustomData
       )
     }
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core/running/MeetingActor.scala

@@ -399,6 +399,7 @@ class MeetingActor(
       case m: ChangeUserPinStateReqMsg      => usersApp.handleChangeUserPinStateReqMsg(m)
       case m: ChangeUserMobileFlagReqMsg    => usersApp.handleChangeUserMobileFlagReqMsg(m)
       case m: SetUserSpeechLocaleReqMsg     => usersApp.handleSetUserSpeechLocaleReqMsg(m)
+      case m: SetUserSpeechOptionsReqMsg    => usersApp.handleSetUserSpeechOptionsReqMsg(m)
 
       // Client requested to eject user
       case m: EjectUserFromMeetingCmdMsg =>
@@ -513,6 +514,7 @@ class MeetingActor(
         handleSetLockSettings(m)
         updateUserLastActivity(m.body.setBy)
       case m: LockUserInMeetingCmdMsg                        => handleLockUserInMeetingCmdMsg(m)
+      case m: LockUserChatInMeetingCmdMsg                    => handleLockUserChatInMeetingCmdMsg(m)
       case m: LockUsersInMeetingCmdMsg                       => handleLockUsersInMeetingCmdMsg(m)
       case m: GetLockSettingsReqMsg                          => handleGetLockSettingsReqMsg(m)
 
@@ -582,6 +584,7 @@ class MeetingActor(
 
       // AudioCaptions
       case m: UpdateTranscriptPubMsg                         => audioCaptionsApp2x.handle(m, liveMeeting, msgBus)
+      case m: TranscriptionProviderErrorMsg                  => audioCaptionsApp2x.handleTranscriptionProviderErrorMsg(m, liveMeeting, msgBus)
 
       // GroupChat
       case m: CreateGroupChatReqMsg =>
@@ -869,6 +872,7 @@ class MeetingActor(
       val hasModeratorLeftRecently = (TimeUtil.timeNowInMs() - state.expiryTracker.endWhenNoModeratorDelayInMs) < state.expiryTracker.lastModeratorLeftOnInMs
       if (!hasModeratorLeftRecently) {
         log.info("Meeting will end due option endWhenNoModerator is enabled and all moderators have left the meeting. meetingId=" + props.meetingProp.intId)
+        endAllBreakoutRooms(eventBus, liveMeeting, state, MeetingEndReason.ENDED_DUE_TO_NO_MODERATOR)
         sendEndMeetingDueToExpiry(
           MeetingEndReason.ENDED_DUE_TO_NO_MODERATOR,
           eventBus, outGW, liveMeeting,

akka-bbb-apps/src/main/scala/org/bigbluebutton/core2/message/handlers/MuteAllExceptPresentersCmdMsgHdlr.scala

@@ -6,6 +6,7 @@ import org.bigbluebutton.core.running.{ MeetingActor, OutMsgRouter }
 import org.bigbluebutton.core2.MeetingStatus2x
 import org.bigbluebutton.core.apps.{ PermissionCheck, RightsManagementTrait }
 import org.bigbluebutton.core2.message.senders.{ MsgBuilder }
+import org.bigbluebutton.core.apps.voice.VoiceApp
 
 trait MuteAllExceptPresentersCmdMsgHdlr extends RightsManagementTrait {
   this: MeetingActor =>
@@ -57,8 +58,8 @@ trait MuteAllExceptPresentersCmdMsgHdlr extends RightsManagementTrait {
           VoiceUsers.findAll(liveMeeting.voiceUsers) foreach { vu =>
             if (!vu.listenOnly) {
               Users2x.findWithIntId(liveMeeting.users2x, vu.intId) match {
-                case Some(u) => if (!u.presenter) muteUserInVoiceConf(vu, muted)
-                case None    => muteUserInVoiceConf(vu, muted)
+                case Some(u) => if (!u.presenter) VoiceApp.muteUserInVoiceConf(liveMeeting, outGW, vu.intId, muted)
+                case None    => VoiceApp.muteUserInVoiceConf(liveMeeting, outGW, vu.intId, muted)
               }
             }
           }
@@ -82,17 +83,4 @@ trait MuteAllExceptPresentersCmdMsgHdlr extends RightsManagementTrait {
     BbbCommonEnvCoreMsg(envelope, event)
   }
 
-  def muteUserInVoiceConf(vu: VoiceUserState, mute: Boolean): Unit = {
-    val routing = Routing.addMsgToClientRouting(MessageTypes.BROADCAST_TO_MEETING, props.meetingProp.intId, vu.intId)
-    val envelope = BbbCoreEnvelope(MuteUserInVoiceConfSysMsg.NAME, routing)
-    val header = BbbCoreHeaderWithMeetingId(MuteUserInVoiceConfSysMsg.NAME, props.meetingProp.intId)
-
-    val body = MuteUserInVoiceConfSysMsgBody(props.voiceProp.voiceConf, vu.voiceUserId, mute)
-    val event = MuteUserInVoiceConfSysMsg(header, body)
-    val msgEvent = BbbCommonEnvCoreMsg(envelope, event)
-
-    outGW.send(msgEvent)
-
-  }
-
 }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core2/message/handlers/MuteMeetingCmdMsgHdlr.scala

@@ -6,6 +6,7 @@ import org.bigbluebutton.core.models.{ VoiceUserState, VoiceUsers }
 import org.bigbluebutton.core.running.{ MeetingActor, OutMsgRouter }
 import org.bigbluebutton.core2.MeetingStatus2x
 import org.bigbluebutton.core2.message.senders.{ MsgBuilder }
+import org.bigbluebutton.core.apps.voice.VoiceApp
 
 trait MuteMeetingCmdMsgHdlr extends RightsManagementTrait {
   this: MeetingActor =>
@@ -30,19 +31,6 @@ trait MuteMeetingCmdMsgHdlr extends RightsManagementTrait {
         BbbCommonEnvCoreMsg(envelope, event)
       }
 
-      def muteUserInVoiceConf(vu: VoiceUserState, mute: Boolean): Unit = {
-        val routing = Routing.addMsgToClientRouting(MessageTypes.BROADCAST_TO_MEETING, props.meetingProp.intId, vu.intId)
-        val envelope = BbbCoreEnvelope(MuteUserInVoiceConfSysMsg.NAME, routing)
-        val header = BbbCoreHeaderWithMeetingId(MuteUserInVoiceConfSysMsg.NAME, props.meetingProp.intId)
-
-        val body = MuteUserInVoiceConfSysMsgBody(props.voiceProp.voiceConf, vu.voiceUserId, mute)
-        val event = MuteUserInVoiceConfSysMsg(header, body)
-        val msgEvent = BbbCommonEnvCoreMsg(envelope, event)
-
-        outGW.send(msgEvent)
-
-      }
-
       if (msg.body.mute != MeetingStatus2x.isMeetingMuted(liveMeeting.status)) {
         if (msg.body.mute) {
           val notifyEvent = MsgBuilder.buildNotifyAllInMeetingEvtMsg(
@@ -79,7 +67,7 @@ trait MuteMeetingCmdMsgHdlr extends RightsManagementTrait {
         if (muted) {
           VoiceUsers.findAll(liveMeeting.voiceUsers) foreach { vu =>
             if (!vu.listenOnly) {
-              muteUserInVoiceConf(vu, muted)
+              VoiceApp.muteUserInVoiceConf(liveMeeting, outGW, vu.intId, muted)
             }
           }
         }

akka-bbb-apps/src/main/scala/org/bigbluebutton/core2/message/senders/MsgBuilder.scala

@@ -637,11 +637,12 @@ object MsgBuilder {
       meetingId: String,
       voiceConf: String,
       userId:    String,
+      callerNum: String,
       enabled:   Boolean
   ): BbbCommonEnvCoreMsg = {
     val routing = collection.immutable.HashMap("sender" -> "bbb-apps-akka")
     val envelope = BbbCoreEnvelope(ToggleListenOnlyModeSysMsg.NAME, routing)
-    val body = ToggleListenOnlyModeSysMsgBody(voiceConf, userId, enabled)
+    val body = ToggleListenOnlyModeSysMsgBody(voiceConf, userId, callerNum, enabled)
     val header = BbbCoreHeaderWithMeetingId(ToggleListenOnlyModeSysMsg.NAME, meetingId)
     val event = ToggleListenOnlyModeSysMsg(header, body)
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core2/message/senders/UserJoinedMeetingEvtMsgBuilder.scala

@@ -16,8 +16,8 @@ object UserJoinedMeetingEvtMsgBuilder {
       raiseHand = userState.raiseHand,
       away = userState.away,
       pin = userState.pin,
-      presenter = userState.presenter, locked = userState.locked, avatar = userState.avatar, color = userState.color,
-      clientType = userState.clientType)
+      presenter = userState.presenter, locked = userState.locked, avatar = userState.avatar, webcamBackground = userState.webcamBackground, color = userState.color,
+      clientType = userState.clientType, userCustomData = userState.userCustomData)
 
     val event = UserJoinedMeetingEvtMsg(meetingId, userState.intId, body)
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core2/testdata/FakeTestData.scala

@@ -20,13 +20,13 @@ trait FakeTestData {
     val guest1 = createUserVoiceAndCam(liveMeeting, Roles.VIEWER_ROLE, guest = true, authed = true, CallingWith.WEBRTC, muted = false,
       talking = false, listenOnly = false)
     Users2x.add(liveMeeting.users2x, guest1)
-    val guestWait1 = GuestWaiting(guest1.intId, guest1.name, guest1.role, guest1.guest, "", "#ff6242", guest1.authed, System.currentTimeMillis())
+    val guestWait1 = GuestWaiting(guest1.intId, guest1.name, guest1.role, guest1.guest, "", "", "#ff6242", guest1.authed, System.currentTimeMillis())
     GuestsWaiting.add(liveMeeting.guestsWaiting, guestWait1)
 
     val guest2 = createUserVoiceAndCam(liveMeeting, Roles.VIEWER_ROLE, guest = true, authed = true, CallingWith.FLASH, muted = false,
       talking = false, listenOnly = false)
     Users2x.add(liveMeeting.users2x, guest2)
-    val guestWait2 = GuestWaiting(guest2.intId, guest2.name, guest2.role, guest2.guest, "", "#ff6242", guest2.authed, System.currentTimeMillis())
+    val guestWait2 = GuestWaiting(guest2.intId, guest2.name, guest2.role, guest2.guest, "", "", "#ff6242", guest2.authed, System.currentTimeMillis())
     GuestsWaiting.add(liveMeeting.guestsWaiting, guestWait2)
 
     val vu1 = FakeUserGenerator.createFakeVoiceOnlyUser(CallingWith.PHONE, muted = false, talking = false, listenOnly = false)
@@ -69,7 +69,8 @@ trait FakeTestData {
     UserState(intId = regUser.id, extId = regUser.externId, name = regUser.name, role = regUser.role, pin = false,
       mobile = false, guest = regUser.guest, authed = regUser.authed, guestStatus = regUser.guestStatus,
       emoji = "none", reactionEmoji = "none", raiseHand = false, away = false, locked = false, presenter = false,
-      avatar = regUser.avatarURL, color = "#ff6242", clientType = "unknown",
+      avatar = regUser.avatarURL, webcamBackground = regUser.webcamBackgroundURL,
+      color = "#ff6242", clientType = "unknown",
       pickExempted = false, userLeftFlag = UserLeftFlag(false, 0))
   }
 

akka-bbb-apps/src/main/scala/org/bigbluebutton/core2/testdata/FakeUserGenerator.scala

@@ -52,10 +52,12 @@ object FakeUserGenerator {
     val authToken = RandomStringGenerator.randomAlphanumericString(16)
     val avatarURL = "https://www." + RandomStringGenerator.randomAlphanumericString(32) + ".com/" +
       RandomStringGenerator.randomAlphanumericString(10) + ".png"
+    val webcamBackgroundURL = "https://www." + RandomStringGenerator.randomAlphanumericString(32) + ".com/" +
+      RandomStringGenerator.randomAlphanumericString(10) + ".jpg"
     val color = "#ff6242"
 
     val ru = RegisteredUsers.create(userId = id, extId, name, role,
-      authToken, avatarURL, color, guest, authed, guestStatus = GuestStatus.ALLOW, false, false)
+      authToken, avatarURL, webcamBackgroundURL, color, guest, authed, guestStatus = GuestStatus.ALLOW, false, false)
     RegisteredUsers.add(users, ru)
     ru
   }

akka-bbb-apps/src/main/scala/org/bigbluebutton/endpoint/redis/LearningDashboardActor.scala

@@ -20,6 +20,7 @@ case class Meeting(
   intId: String,
   extId: String,
   name:  String,
+  downloadSessionDataEnabled: Boolean,
   users: Map[String, User] = Map(),
   polls: Map[String, Poll] = Map(),
   screenshares: Vector[Screenshare] = Vector(),
@@ -397,10 +398,33 @@ class LearningDashboardActor(
       user <- findUserByIntId(meeting, msg.body.userId)
     } yield {
       if (msg.body.reactionEmoji != "none") {
-        val updatedUser = user.copy(reactions = user.reactions :+ Emoji(msg.body.reactionEmoji))
-        val updatedMeeting = meeting.copy(users = meeting.users + (updatedUser.userKey -> updatedUser))
+        //Ignore multiple Reactions to prevent flooding
+        val hasSameReactionInLast30Seconds = user.reactions.filter(r => {
+          System.currentTimeMillis() - r.sentOn < (30 * 1000) && r.name == msg.body.reactionEmoji
+        }).length > 0
 
-        meetings += (updatedMeeting.intId -> updatedMeeting)
+        if(!hasSameReactionInLast30Seconds) {
+          val updatedUser = user.copy(reactions = user.reactions :+ Emoji(msg.body.reactionEmoji))
+          val updatedMeeting = meeting.copy(users = meeting.users + (updatedUser.userKey -> updatedUser))
+          meetings += (updatedMeeting.intId -> updatedMeeting)
+
+          //Convert Reactions to legacy Emoji (while LearningDashboard doesn't support Reactions)
+          val emoji = msg.body.reactionEmoji.codePointAt(0) match {
+            case 128515 => "happy"
+            case 128528 => "neutral"
+            case 128577 => "sad"
+            case 128077 => "thumbsUp"
+            case 128078 => "thumbsDown"
+            case 128079 => "applause"
+            case _ => "none"
+          }
+
+          if (emoji != "none") {
+            val updatedUserWithEmoji = updatedUser.copy(emojis = user.emojis :+ Emoji(emoji))
+            val updatedMeetingWithEmoji = meeting.copy(users = meeting.users + (updatedUserWithEmoji.userKey -> updatedUserWithEmoji))
+            meetings += (updatedMeeting.intId -> updatedMeetingWithEmoji)
+          }
+        }
       }
     }
   }
@@ -562,6 +586,7 @@ class LearningDashboardActor(
         msg.body.props.meetingProp.intId,
         msg.body.props.meetingProp.extId,
         msg.body.props.meetingProp.name,
+        downloadSessionDataEnabled = !msg.body.props.meetingProp.disabledFeatures.contains("learningDashboardDownloadSessionData"),
       )
 
       meetings += (newMeeting.intId -> newMeeting)

akka-bbb-apps/src/main/scala/org/bigbluebutton/endpoint/redis/RedisRecorderActor.scala

@@ -85,6 +85,9 @@ class RedisRecorderActor(
       case m: UserLeftMeetingEvtMsg                 => handleUserLeftMeetingEvtMsg(m)
       case m: PresenterAssignedEvtMsg               => handlePresenterAssignedEvtMsg(m)
       case m: UserEmojiChangedEvtMsg                => handleUserEmojiChangedEvtMsg(m)
+      case m: UserAwayChangedEvtMsg                 => handleUserAwayChangedEvtMsg(m)
+      case m: UserRaiseHandChangedEvtMsg            => handleUserRaiseHandChangedEvtMsg(m)
+      case m: UserReactionEmojiChangedEvtMsg        => handleUserReactionEmojiChangedEvtMsg(m)
       case m: UserRoleChangedEvtMsg                 => handleUserRoleChangedEvtMsg(m)
       case m: UserBroadcastCamStartedEvtMsg         => handleUserBroadcastCamStartedEvtMsg(m)
       case m: UserBroadcastCamStoppedEvtMsg         => handleUserBroadcastCamStoppedEvtMsg(m)
@@ -112,7 +115,7 @@ class RedisRecorderActor(
       //case m: DeskShareNotifyViewersRTMP  => handleDeskShareNotifyViewersRTMP(m)
 
       // AudioCaptions
-      case m: TranscriptUpdatedEvtMsg               => handleTranscriptUpdatedEvtMsg(m)
+      //case m: TranscriptUpdatedEvtMsg               => handleTranscriptUpdatedEvtMsg(m) // temporarily disabling due to issue https://github.com/bigbluebutton/bigbluebutton/issues/19701
 
       // Meeting
       case m: RecordingStatusChangedEvtMsg          => handleRecordingStatusChangedEvtMsg(m)
@@ -354,6 +357,7 @@ class RedisRecorderActor(
     ev.setExternalUserId(msg.body.extId)
     ev.setName(msg.body.name)
     ev.setRole(msg.body.role)
+    ev.setUserdata(msg.body.userCustomData)
 
     record(msg.header.meetingId, ev.toMap.asJava)
   }
@@ -379,6 +383,18 @@ class RedisRecorderActor(
     handleUserStatusChange(msg.header.meetingId, msg.body.userId, "emojiStatus", msg.body.emoji)
   }
 
+  private def handleUserAwayChangedEvtMsg(msg: UserAwayChangedEvtMsg) {
+    handleUserStatusChange(msg.header.meetingId, msg.body.userId, "away", if (msg.body.away) "true" else "false")
+  }
+
+  private def handleUserRaiseHandChangedEvtMsg(msg: UserRaiseHandChangedEvtMsg) {
+    handleUserStatusChange(msg.header.meetingId, msg.body.userId, "raiseHand", if (msg.body.raiseHand) "true" else "false")
+  }
+
+  private def handleUserReactionEmojiChangedEvtMsg(msg: UserReactionEmojiChangedEvtMsg) {
+    handleUserStatusChange(msg.header.meetingId, msg.body.userId, "reactionEmoji", msg.body.reactionEmoji)
+  }
+
   private def handleUserRoleChangedEvtMsg(msg: UserRoleChangedEvtMsg) {
     handleUserStatusChange(msg.header.meetingId, msg.body.userId, "role", msg.body.role)
   }
@@ -521,6 +537,7 @@ class RedisRecorderActor(
   }
   */
 
+  /* temporarily disabling due to issue https://github.com/bigbluebutton/bigbluebutton/issues/19701
   private def handleTranscriptUpdatedEvtMsg(msg: TranscriptUpdatedEvtMsg) {
     val ev = new TranscriptUpdatedRecordEvent()
     ev.setMeetingId(msg.header.meetingId)
@@ -529,6 +546,7 @@ class RedisRecorderActor(
 
     record(msg.header.meetingId, ev.toMap.asJava)
   }
+  */
 
   private def handleStartExternalVideoEvtMsg(msg: StartExternalVideoEvtMsg) {
     val ev = new StartExternalVideoRecordEvent()

akka-bbb-apps/src/test/scala/org/bigbluebutton/core/AppsTestFixtures.scala

@@ -44,6 +44,7 @@ trait AppsTestFixtures {
   val allowModsToUnmuteUsers = false
   val allowModsToEjectCameras = false
   val authenticatedGuest = false
+  val allowPromoteGuestToModerator = false
   val meetingLayout = ""
   val captureNotesFilename = s"Room 0${sequence} (Notes)"
   val captureSlidesFilename = s"Room 0${sequence} (Whiteboard)"
@@ -70,7 +71,7 @@ trait AppsTestFixtures {
   val usersProp = UsersProp(maxUsers = maxUsers, webcamsOnlyForModerator = webcamsOnlyForModerator,
     userCameraCap = userCameraCap,
     guestPolicy = guestPolicy, allowModsToUnmuteUsers = allowModsToUnmuteUsers, allowModsToEjectCameras = allowModsToEjectCameras,
-    authenticatedGuest = authenticatedGuest, meetingLayout = meetingLayout)
+    authenticatedGuest = authenticatedGuest, allowPromoteGuestToModerator = allowPromoteGuestToModerator, meetingLayout = meetingLayout)
   val metadataProp = new MetadataProp(metadata)
 
   val defaultProps = DefaultProps(meetingProp, breakoutProps, durationProps, password, recordProp, welcomeProp, voiceProp,

akka-bbb-apps/src/test/scala/org/bigbluebutton/core2/testdata/TestDataGen.scala

@@ -12,9 +12,11 @@ object TestDataGen {
     val authToken = RandomStringGenerator.randomAlphanumericString(16)
     val avatarURL = "https://www." + RandomStringGenerator.randomAlphanumericString(32) + ".com/" +
       RandomStringGenerator.randomAlphanumericString(10) + ".png"
+    val webcamBackgroundURL = "https://www." + RandomStringGenerator.randomAlphanumericString(32) + ".com/" +
+      RandomStringGenerator.randomAlphanumericString(10) + ".jpg"
 
     val ru = RegisteredUsers.create(userId = id, extId, name, role,
-      authToken, avatarURL, guest, authed, GuestStatus.ALLOW, false)
+      authToken, avatarURL, webcamBackgroundURL, guest, authed, GuestStatus.ALLOW, false)
 
     RegisteredUsers.add(users, ru)
     ru
@@ -48,7 +50,7 @@ object TestDataGen {
     val u = UserState(intId = regUser.id, extId = regUser.externId, name = regUser.name, role = regUser.role,
       guest = regUser.guest, authed = regUser.authed, guestStatus = regUser.guestStatus,
       emoji = "none", reactionEmoji = "none", raiseHand = false, away = false, pin = false, mobile = false,
-      locked = false, presenter = false, avatar = regUser.avatarURL, color = "#ff6242",
+      locked = false, presenter = false, avatar = regUser.avatarURL, regUser.webcamBackgroundURL, color = "#ff6242",
       clientType = "unknown", pickExempted = false, userLeftFlag = UserLeftFlag(false, 0))
     Users2x.add(liveMeeting.users2x, u)
     u

akka-bbb-apps/src/universal/conf/application.conf

@@ -44,6 +44,7 @@ expire {
 services {
   bbbWebAPI = "https://192.168.23.33/bigbluebutton/api"
   sharedSecret = "changeme"
+  checkSumAlgorithmForBreakouts = "sha256"
 }
 
 eventBus {
@@ -96,6 +97,11 @@ voiceConf {
   # Time (seconds) to wait before requesting an audio channel hold after
   # muting a user. Used in the experimental, transparent listen only mode.
   toggleListenOnlyAfterMuteTimer = 4
+
+  # Transparent listen only meeting-wide activation threshold.
+  # Threshold is the number of muted duplex audio channels in a meeting.
+  # 0 = disabled
+  transparentListenOnlyThreshold = 0
 }
 
 recording {

akka-bbb-fsesl/project/Dependencies.scala

@@ -14,7 +14,7 @@ object Dependencies {
     // Libraries
     val akkaVersion = "2.6.17"
     val akkaHttpVersion = "10.2.7"
-    val logback = "1.2.10"
+    val logback = "1.2.13"
 
     // Apache Commons
     val lang = "3.12.0"

akka-bbb-fsesl/src/main/java/org/bigbluebutton/freeswitch/voice/FreeswitchConferenceEventListener.java

@@ -109,6 +109,7 @@ public class FreeswitchConferenceEventListener implements ConferenceEventListene
                   evt.callSession,
                   evt.clientSession,
                   evt.userId,
+                  evt.getVoiceUserId(),
                   evt.callerName,
                   evt.callState,
                   evt.origCallerIdName,

akka-bbb-fsesl/src/main/java/org/bigbluebutton/freeswitch/voice/IVoiceConferenceService.java

@@ -59,6 +59,7 @@ public interface IVoiceConferenceService {
                            String callSession,
                            String clientSession,
                            String userId,
+                           String voiceUserId,
                            String callerName,
                            String callState,
                            String origCallerIdName,

akka-bbb-fsesl/src/main/java/org/bigbluebutton/freeswitch/voice/events/VoiceCallStateEvent.java

@@ -4,6 +4,8 @@ public class VoiceCallStateEvent extends VoiceConferenceEvent {
     public final String callSession;
     public final String clientSession;
     public final String userId;
+    // AKA mod_conference memberId
+    public final String voiceUserId;
     public final String callerName;
     public final String callState;
     public final String origCallerIdName;
@@ -14,6 +16,7 @@ public class VoiceCallStateEvent extends VoiceConferenceEvent {
             String callSession,
             String clientSession,
             String userId,
+            String voiceUserId,
             String callerName,
             String callState,
             String origCallerIdName,
@@ -22,9 +25,14 @@ public class VoiceCallStateEvent extends VoiceConferenceEvent {
         this.callSession = callSession;
         this.clientSession = clientSession;
         this.userId = userId;
+        this.voiceUserId = voiceUserId;
         this.callerName = callerName;
         this.callState = callState;
         this.origCallerIdName = origCallerIdName;
         this.origCalledDest = origCalledDest;
     }
+
+    public String getVoiceUserId() {
+        return voiceUserId;
+    }
 }

akka-bbb-fsesl/src/main/java/org/bigbluebutton/freeswitch/voice/freeswitch/ESLEventListener.java

@@ -84,6 +84,7 @@ public class ESLEventListener implements IEslEventListener {
         String origCallerIdName = headers.get("Caller-Caller-ID-Name");
         String origCallerDestNumber = headers.get("Caller-Destination-Number");
         String clientSession = "0";
+        String memberIdStr = memberId != null ? memberId.toString() : "";
 
         Matcher matcher = CALLERNAME_PATTERN.matcher(callerIdName);
         Matcher callWithSess = CALLERNAME_WITH_SESS_INFO_PATTERN.matcher(callerIdName);
@@ -106,6 +107,7 @@ public class ESLEventListener implements IEslEventListener {
                 coreuuid,
                 clientSession,
                 voiceUserId,
+                memberIdStr,
                 callerIdName,
                 callState,
                 origCallerIdName,
@@ -281,6 +283,7 @@ public class ESLEventListener implements IEslEventListener {
             String varvBridge = (eventHeaders.get("variable_vbridge") == null) ? "" : eventHeaders.get("variable_vbridge");
 
             if ("echo".equalsIgnoreCase(application) && !varvBridge.isEmpty()) {
+                Integer memberId = this.getMemberId(eventHeaders);
                 String origCallerIdName = eventHeaders.get("Caller-Caller-ID-Name");
                 String origCallerDestNumber = eventHeaders.get("Caller-Destination-Number");
                 String coreuuid = eventHeaders.get("Core-UUID");
@@ -291,6 +294,7 @@ public class ESLEventListener implements IEslEventListener {
                 String callerName = origCallerIdName;
                 String clientSession = "0";
                 String callState = "IN_ECHO_TEST";
+                String memberIdStr = memberId != null ? memberId.toString() : "";
 
                 Matcher callerListenOnly = CALLERNAME_LISTENONLY_PATTERN.matcher(origCallerIdName);
                 Matcher callWithSess = CALLERNAME_WITH_SESS_INFO_PATTERN.matcher(origCallerIdName);
@@ -314,6 +318,7 @@ public class ESLEventListener implements IEslEventListener {
                         coreuuid,
                         clientSession,
                         voiceUserId,
+                        memberIdStr,
                         callerName,
                         callState,
                         origCallerIdName,
@@ -321,6 +326,7 @@ public class ESLEventListener implements IEslEventListener {
                 conferenceEventListener.handleConferenceEvent(csEvent);
 
             } else if ("RINGING".equalsIgnoreCase(channelCallState) && !varvBridge.isEmpty()) {
+                Integer memberId = this.getMemberId(eventHeaders);
                 String origCallerIdName = eventHeaders.get("Caller-Caller-ID-Name");
                 String origCallerDestNumber = eventHeaders.get("Caller-Destination-Number");
                 String coreuuid = eventHeaders.get("Core-UUID");
@@ -330,6 +336,7 @@ public class ESLEventListener implements IEslEventListener {
                 String callerName = origCallerIdName;
                 String clientSession = "0";
                 String callState = "CALL_STARTED";
+                String memberIdStr = memberId != null ? memberId.toString() : "";
 
                 Matcher callerListenOnly = CALLERNAME_LISTENONLY_PATTERN.matcher(origCallerIdName);
                 Matcher callWithSess = CALLERNAME_WITH_SESS_INFO_PATTERN.matcher(origCallerIdName);
@@ -353,6 +360,7 @@ public class ESLEventListener implements IEslEventListener {
                         coreuuid,
                         clientSession,
                         voiceUserId,
+                        memberIdStr,
                         callerName,
                         callState,
                         origCallerIdName,
@@ -365,6 +373,7 @@ public class ESLEventListener implements IEslEventListener {
             String channelState = (eventHeaders.get("Channel-State") == null) ? "" : eventHeaders.get("Channel-State");
 
             if ("HANGUP".equalsIgnoreCase(channelCallState) && "CS_DESTROY".equalsIgnoreCase(channelState)) {
+                Integer memberId = this.getMemberId(eventHeaders);
                 String origCallerIdName = eventHeaders.get("Caller-Caller-ID-Name");
                 String origCallerDestNumber = eventHeaders.get("Caller-Destination-Number");
                 String coreuuid = eventHeaders.get("Core-UUID");
@@ -374,6 +383,7 @@ public class ESLEventListener implements IEslEventListener {
                 String callerName = origCallerIdName;
                 String clientSession = "0";
                 String callState = "CALL_ENDED";
+                String memberIdStr = memberId != null ? memberId.toString() : "";
 
                 Matcher callerListenOnly = CALLERNAME_LISTENONLY_PATTERN.matcher(origCallerIdName);
                 Matcher callWithSess = CALLERNAME_WITH_SESS_INFO_PATTERN.matcher(origCallerIdName);
@@ -397,6 +407,7 @@ public class ESLEventListener implements IEslEventListener {
                         coreuuid,
                         clientSession,
                         voiceUserId,
+                        memberIdStr,
                         callerName,
                         callState,
                         origCallerIdName,
@@ -405,6 +416,7 @@ public class ESLEventListener implements IEslEventListener {
                 conferenceEventListener.handleConferenceEvent(csEvent);
 
             } else if ("RINGING".equalsIgnoreCase(channelCallState) && "CS_EXECUTE".equalsIgnoreCase(channelState)) {
+                Integer memberId = this.getMemberId(eventHeaders);
                 String origCallerIdName = eventHeaders.get("Caller-Caller-ID-Name");
                 String origCallerDestNumber = eventHeaders.get("Caller-Destination-Number");
                 String coreuuid = eventHeaders.get("Core-UUID");
@@ -414,6 +426,7 @@ public class ESLEventListener implements IEslEventListener {
                 String callerName = origCallerIdName;
                 String clientSession = "0";
                 String callState = "CALL_STARTED";
+                String memberIdStr = memberId != null ? memberId.toString() : "";
 
                 Matcher callerListenOnly = CALLERNAME_LISTENONLY_PATTERN.matcher(origCallerIdName);
                 Matcher callWithSess = CALLERNAME_WITH_SESS_INFO_PATTERN.matcher(origCallerIdName);
@@ -437,6 +450,7 @@ public class ESLEventListener implements IEslEventListener {
                         coreuuid,
                         clientSession,
                         voiceUserId,
+                        memberIdStr,
                         callerName,
                         callState,
                         origCallerIdName,

akka-bbb-fsesl/src/main/scala/org/bigbluebutton/freeswitch/VoiceConferenceService.scala

@@ -229,6 +229,7 @@ class VoiceConferenceService(healthz: HealthzService,
       callSession:      String,
       clientSession:    String,
       userId:           String,
+      voiceUserId:      String,
       callerName:       String,
       callState:        String,
       origCallerIdName: String,
@@ -240,6 +241,7 @@ class VoiceConferenceService(healthz: HealthzService,
       callSession = callSession,
       clientSession = clientSession,
       userId = userId,
+      voiceUserId = voiceUserId,
       callerName = callerName,
       callState = callState,
       origCallerIdName = origCallerIdName,

bbb-common-message/src/main/scala/org/bigbluebutton/common2/domain/Meeting2x.scala

@@ -41,15 +41,16 @@ case class WelcomeProp(welcomeMsgTemplate: String, welcomeMsg: String, modOnlyMe
 case class VoiceProp(telVoice: String, voiceConf: String, dialNumber: String, muteOnStart: Boolean)
 
 case class UsersProp(
-    maxUsers:                 Int,
-    maxUserConcurrentAccesses:Int,
-    webcamsOnlyForModerator:  Boolean,
-    userCameraCap:            Int,
-    guestPolicy:              String,
-    meetingLayout:            String,
-    allowModsToUnmuteUsers:   Boolean,
-    allowModsToEjectCameras:  Boolean,
-    authenticatedGuest:       Boolean
+    maxUsers:                     Int,
+    maxUserConcurrentAccesses:    Int,
+    webcamsOnlyForModerator:      Boolean,
+    userCameraCap:                Int,
+    guestPolicy:                  String,
+    meetingLayout:                String,
+    allowModsToUnmuteUsers:       Boolean,
+    allowModsToEjectCameras:      Boolean,
+    authenticatedGuest:           Boolean,
+    allowPromoteGuestToModerator: Boolean
 )
 
 case class MetadataProp(metadata: collection.immutable.Map[String, String])
@@ -114,8 +115,8 @@ case class UserVO(id: String, externalId: String, name: String, role: String,
                   guest: Boolean, authed: Boolean, guestStatus: String, emojiStatus: String,
                   presenter: Boolean, hasStream: Boolean, locked: Boolean, webcamStreams: Set[String],
                   phoneUser: Boolean, voiceUser: VoiceUserVO, listenOnly: Boolean, avatarURL: String,
-                  joinedWeb: Boolean)
+                  webcamBackgroundURL: String, joinedWeb: Boolean)
 
 case class VoiceUserVO(userId: String, webUserId: String, callerName: String,
                        callerNum: String, joined: Boolean, locked: Boolean, muted: Boolean,
-                       talking: Boolean, avatarURL: String, listenOnly: Boolean)
+                       talking: Boolean, avatarURL: String, webcamBackgroundURL: String, listenOnly: Boolean)

bbb-common-message/src/main/scala/org/bigbluebutton/common2/msgs/AudioCaptionsMsgs.scala

@@ -1,5 +1,12 @@
 package org.bigbluebutton.common2.msgs
 
+object TranscriptionProviderErrorMsg { val NAME = "TranscriptionProviderErrorMsg" }
+case class TranscriptionProviderErrorMsg(header: BbbClientMsgHeader, body: TranscriptionProviderErrorMsgBody) extends StandardMsg
+case class TranscriptionProviderErrorMsgBody(
+    errorCode:    String,
+    errorMessage: String,
+)
+
 // In messages
 object UpdateTranscriptPubMsg { val NAME = "UpdateTranscriptPubMsg" }
 case class UpdateTranscriptPubMsg(header: BbbClientMsgHeader, body: UpdateTranscriptPubMsgBody) extends StandardMsg
@@ -14,6 +21,10 @@ case class UpdateTranscriptPubMsgBody(
 )
 
 // Out messages
+object TranscriptionProviderErrorEvtMsg { val NAME = "TranscriptionProviderErrorEvtMsg" }
+case class TranscriptionProviderErrorEvtMsg(header: BbbClientMsgHeader, body: TranscriptionProviderErrorEvtMsgBody) extends BbbCoreMsg
+case class TranscriptionProviderErrorEvtMsgBody(errorCode: String, errorMessage: String)
+
 object TranscriptUpdatedEvtMsg { val NAME = "TranscriptUpdatedEvtMsg" }
 case class TranscriptUpdatedEvtMsg(header: BbbClientMsgHeader, body: TranscriptUpdatedEvtMsgBody) extends BbbCoreMsg
 case class TranscriptUpdatedEvtMsgBody(transcriptId: String, transcript: String, locale: String, result: Boolean)

bbb-common-message/src/main/scala/org/bigbluebutton/common2/msgs/BreakoutMsgs.scala

@@ -57,6 +57,7 @@ case class BreakoutRoomDetail(
     viewerPassword:          String,
     sourcePresentationId:    String,
     sourcePresentationSlide: Int,
+    sourcePresentationFilename: String,
     record:                  Boolean,
     privateChatEnabled:      Boolean,
     captureNotes:            Boolean,
@@ -71,7 +72,7 @@ case class BreakoutRoomDetail(
 object CreateBreakoutRoomsCmdMsg { val NAME = "CreateBreakoutRoomsCmdMsg" }
 case class CreateBreakoutRoomsCmdMsg(header: BbbClientMsgHeader, body: CreateBreakoutRoomsCmdMsgBody) extends StandardMsg
 case class CreateBreakoutRoomsCmdMsgBody(meetingId: String, durationInMinutes: Int, record: Boolean, captureNotes: Boolean, captureSlides: Boolean, rooms: Vector[BreakoutRoomMsgBody], sendInviteToModerators: Boolean)
-case class BreakoutRoomMsgBody(name: String, sequence: Int, shortName: String, captureNotesFilename: String, captureSlidesFilename: String, isDefaultName: Boolean, freeJoin: Boolean, users: Vector[String])
+case class BreakoutRoomMsgBody(name: String, sequence: Int, shortName: String, captureNotesFilename: String, captureSlidesFilename: String, isDefaultName: Boolean, freeJoin: Boolean, users: Vector[String], allPages: Boolean, presId: String, sourcePresentationFilename: String)
 
 // Sent by user to request ending all the breakout rooms
 object EndAllBreakoutRoomsMsg { val NAME = "EndAllBreakoutRoomsMsg" }

bbb-common-message/src/main/scala/org/bigbluebutton/common2/msgs/PadsMsgs.scala

@@ -107,7 +107,7 @@ case class PadTailEvtMsgBody(externalId: String, tail: String)
 // client -> apps
 object PadUpdatePubMsg { val NAME = "PadUpdatePubMsg" }
 case class PadUpdatePubMsg(header: BbbClientMsgHeader, body: PadUpdatePubMsgBody) extends StandardMsg
-case class PadUpdatePubMsgBody(externalId: String, text: String)
+case class PadUpdatePubMsgBody(externalId: String, text: String, transcript: Boolean)
 
 // apps -> pads
 object PadUpdateCmdMsg { val NAME = "PadUpdateCmdMsg" }

bbb-common-message/src/main/scala/org/bigbluebutton/common2/msgs/UsersMsgs.scala

@@ -6,8 +6,9 @@ case class RegisterUserReqMsg(
     body:   RegisterUserReqMsgBody
 ) extends BbbCoreMsg
 case class RegisterUserReqMsgBody(meetingId: String, intUserId: String, name: String, role: String,
-                                  extUserId: String, authToken: String, avatarURL: String,
-                                  guest: Boolean, authed: Boolean, guestStatus: String, excludeFromDashboard: Boolean)
+                                  extUserId: String, authToken: String, avatarURL: String, webcamBackgroundURL: String,
+                                  guest: Boolean, authed: Boolean, guestStatus: String, excludeFromDashboard: Boolean,
+                                  userCustomData: Map[String, AnyRef])
 
 object UserRegisteredRespMsg { val NAME = "UserRegisteredRespMsg" }
 case class UserRegisteredRespMsg(
@@ -89,23 +90,25 @@ case class UserJoinedMeetingEvtMsg(
     body:   UserJoinedMeetingEvtMsgBody
 ) extends BbbCoreMsg
 case class UserJoinedMeetingEvtMsgBody(
-    intId:         String,
-    extId:         String,
-    name:          String,
-    role:          String,
-    guest:         Boolean,
-    authed:        Boolean,
-    guestStatus:   String,
-    emoji:         String,
-    reactionEmoji: String,
-    raiseHand:     Boolean,
-    away:          Boolean,
-    pin:           Boolean,
-    presenter:     Boolean,
-    locked:        Boolean,
-    avatar:        String,
-    color:         String,
-    clientType:    String
+    intId:            String,
+    extId:            String,
+    name:             String,
+    role:             String,
+    guest:            Boolean,
+    authed:           Boolean,
+    guestStatus:      String,
+    emoji:            String,
+    reactionEmoji:    String,
+    raiseHand:        Boolean,
+    away:             Boolean,
+    pin:              Boolean,
+    presenter:        Boolean,
+    locked:           Boolean,
+    avatar:           String,
+    webcamBackground: String,
+    color:            String,
+    clientType:       String,
+    userCustomData:   Map[String, String]
 )
 
 /**
@@ -345,6 +348,20 @@ object UserLockedInMeetingEvtMsg { val NAME = "UserLockedInMeetingEvtMsg" }
 case class UserLockedInMeetingEvtMsg(header: BbbClientMsgHeader, body: UserLockedInMeetingEvtMsgBody) extends BbbCoreMsg
 case class UserLockedInMeetingEvtMsgBody(userId: String, locked: Boolean, lockedBy: String)
 
+/**
+ * Sent from client to lock user in meeting.
+ */
+object LockUserChatInMeetingCmdMsg { val NAME = "LockUserChatInMeetingCmdMsg" }
+case class LockUserChatInMeetingCmdMsg(header: BbbClientMsgHeader, body: LockUserChatInMeetingCmdMsgBody) extends StandardMsg
+case class LockUserChatInMeetingCmdMsgBody(userId: String, isLocked: Boolean, lockedBy: String)
+
+/**
+ * Send to client that user has been locked.
+ */
+object LockUserChatInMeetingEvtMsg { val NAME = "LockUserChatInMeetingEvtMsg" }
+case class LockUserChatInMeetingEvtMsg(header: BbbClientMsgHeader, body: LockUserChatInMeetingEvtMsgBody) extends BbbCoreMsg
+case class LockUserChatInMeetingEvtMsgBody(userId: String, isLocked: Boolean)
+
 /**
  * Sent by client to lock users.
  */
@@ -531,3 +548,11 @@ case class SetUserSpeechLocaleReqMsgBody(locale: String, provider: String)
 object UserSpeechLocaleChangedEvtMsg { val NAME = "UserSpeechLocaleChangedEvtMsg" }
 case class UserSpeechLocaleChangedEvtMsg(header: BbbClientMsgHeader, body: UserSpeechLocaleChangedEvtMsgBody) extends BbbCoreMsg
 case class UserSpeechLocaleChangedEvtMsgBody(locale: String, provider: String)
+
+object SetUserSpeechOptionsReqMsg { val NAME = "SetUserSpeechOptionsReqMsg" }
+case class SetUserSpeechOptionsReqMsg(header: BbbClientMsgHeader, body: SetUserSpeechOptionsReqMsgBody) extends StandardMsg
+case class SetUserSpeechOptionsReqMsgBody(partialUtterances: Boolean, minUtteranceLength: Int)
+
+object UserSpeechOptionsChangedEvtMsg { val NAME = "UserSpeechOptionsChangedEvtMsg" }
+case class UserSpeechOptionsChangedEvtMsg(header: BbbClientMsgHeader, body: UserSpeechOptionsChangedEvtMsgBody) extends BbbCoreMsg
+case class UserSpeechOptionsChangedEvtMsgBody(partialUtterances: Boolean, minUtteranceLength: Int)

bbb-common-message/src/main/scala/org/bigbluebutton/common2/msgs/VoiceConfMsgs.scala

@@ -555,6 +555,7 @@ case class VoiceConfCallStateEvtMsgBody(
     callSession:      String,
     clientSession:    String,
     userId:           String,
+    voiceUserId:      String,
     callerName:       String,
     callState:        String,
     origCallerIdName: String,
@@ -685,6 +686,7 @@ case class ToggleListenOnlyModeSysMsg(
 case class ToggleListenOnlyModeSysMsgBody(
     voiceConf: String,
     userId:    String,
+    callerNum: String,
     enabled:   Boolean
 )
 
@@ -701,5 +703,6 @@ case class ListenOnlyModeToggledInSfuEvtMsgBody(
     meetingId: String,
     voiceConf: String,
     userId:    String,
+    callerNum: String,
     enabled:   Boolean
 )

bbb-common-message/src/test/scala/org/bigbluebutton/common2/TestFixtures.scala

@@ -44,6 +44,7 @@ trait TestFixtures {
   val keepEvents = false
   val guestPolicy = "ALWAYS_ASK"
   val authenticatedGuest = false
+  val allowPromoteGuestToModerator = false
   val metadata: collection.immutable.Map[String, String] = Map("foo" -> "bar", "bar" -> "baz", "baz" -> "foo")
   val captureNotesFilename = s"Room 0${sequence} (Notes)"
   val captureSlidesFilename = s"Room 0${sequence} (Whiteboard)"
@@ -71,7 +72,8 @@ trait TestFixtures {
   val voiceProp = VoiceProp(telVoice = voiceConfId, voiceConf = voiceConfId, dialNumber = dialNumber, muteOnStart = muteOnStart)
   val usersProp = UsersProp(maxUsers = maxUsers, webcamsOnlyForModerator = webcamsOnlyForModerator,
     userCameraCap = userCameraCap,
-    guestPolicy = guestPolicy, allowModsToUnmuteUsers = allowModsToUnmuteUsers, allowModsToEjectCameras = allowModsToEjectCameras, authenticatedGuest = authenticatedGuest)
+    guestPolicy = guestPolicy, allowModsToUnmuteUsers = allowModsToUnmuteUsers, allowModsToEjectCameras = allowModsToEjectCameras,
+    authenticatedGuest = authenticatedGuest, allowPromoteGuestToModerator = allowPromoteGuestToModerator)
   val metadataProp = new MetadataProp(metadata)
   val defaultProps = DefaultProps(meetingProp, breakoutProps, durationProps, password, recordProp, welcomeProp, voiceProp,
     usersProp, metadataProp)

bbb-common-web/build.sbt

@@ -103,14 +103,16 @@ homepage := Some(url("http://www.bigbluebutton.org"))
 
 libraryDependencies ++= Seq(
   "javax.validation" % "validation-api" % "2.0.1.Final",
-  "org.springframework.boot" % "spring-boot-starter-validation" % "2.7.12",
+  "org.springframework.boot" % "spring-boot-starter-validation" % "2.7.17",
   "org.springframework.data" % "spring-data-commons" % "2.7.6",
   "org.apache.httpcomponents" % "httpclient" % "4.5.13",
-  "org.postgresql" % "postgresql" % "42.4.3",
+  "org.postgresql" % "postgresql" % "42.7.2",
   "org.hibernate" % "hibernate-core" % "5.6.1.Final",
   "org.flywaydb" % "flyway-core" % "7.8.2",
   "com.zaxxer" % "HikariCP" % "4.0.3",
   "commons-validator" % "commons-validator" % "1.7",
   "org.apache.tika" % "tika-core" % "2.8.0",
-  "org.apache.tika" % "tika-parsers-standard-package" % "2.8.0"
+  "org.apache.tika" % "tika-parsers-standard-package" % "2.8.0",
+  "org.scala-lang.modules" %% "scala-xml" % "2.2.0",
+  "jakarta.ws.rs" % "jakarta.ws.rs-api" % "3.1.0"
 )

bbb-common-web/src/main/java/org/bigbluebutton/api/ApiParams.java

@@ -33,6 +33,7 @@ public class ApiParams {
     public static final String FREE_JOIN = "freeJoin";
     public static final String FULL_NAME = "fullName";
     public static final String GUEST_POLICY = "guestPolicy";
+    public static final String ALLOW_PROMOTE_GUEST_TO_MODERATOR = "allowPromoteGuestToModerator";
     public static final String MEETING_LAYOUT = "meetingLayout";
     public static final String IS_BREAKOUT = "isBreakout";
     public static final String LOGO = "logo";

bbb-common-web/src/main/java/org/bigbluebutton/api/MeetingService.java

@@ -126,10 +126,10 @@ public class MeetingService implements MessageListener {
 
   public void registerUser(String meetingID, String internalUserId,
                            String fullname, String role, String externUserID,
-                           String authToken, String avatarURL, Boolean guest,
+                           String authToken, String avatarURL, String webcamBackgroundURL, Boolean guest,
                            Boolean authed, String guestStatus, Boolean excludeFromDashboard, Boolean leftGuestLobby) {
     handle(new RegisterUser(meetingID, internalUserId, fullname, role,
-      externUserID, authToken, avatarURL, guest, authed, guestStatus, excludeFromDashboard, leftGuestLobby));
+      externUserID, authToken, avatarURL, webcamBackgroundURL, guest, authed, guestStatus, excludeFromDashboard, leftGuestLobby));
 
     Meeting m = getMeeting(meetingID);
     if (m != null) {
@@ -401,10 +401,12 @@ public class MeetingService implements MessageListener {
     gw.createMeeting(m.getInternalId(), m.getExternalId(), m.getParentMeetingId(), m.getName(), m.isRecord(),
             m.getTelVoice(), m.getDuration(), m.getAutoStartRecording(), m.getAllowStartStopRecording(),
             m.getRecordFullDurationMedia(),
-            m.getWebcamsOnlyForModerator(), m.getMeetingCameraCap(), m.getUserCameraCap(), m.getMaxPinnedCameras(), m.getModeratorPassword(), m.getViewerPassword(),
+            m.getWebcamsOnlyForModerator(), m.getMeetingCameraCap(), m.getUserCameraCap(), m.getMaxPinnedCameras(),
+            m.getModeratorPassword(), m.getViewerPassword(),
             m.getLearningDashboardAccessToken(), m.getCreateTime(),
             formatPrettyDate(m.getCreateTime()), m.isBreakout(), m.getSequence(), m.isFreeJoin(), m.getMetadata(),
-            m.getGuestPolicy(), m.getAuthenticatedGuest(), m.getMeetingLayout(), m.getWelcomeMessageTemplate(), m.getWelcomeMessage(), m.getModeratorOnlyMessage(),
+            m.getGuestPolicy(), m.getAuthenticatedGuest(), m.getAllowPromoteGuestToModerator(), m.getMeetingLayout(),
+            m.getWelcomeMessageTemplate(), m.getWelcomeMessage(), m.getModeratorOnlyMessage(),
             m.getDialNumber(), m.getMaxUsers(), m.getMaxUserConcurrentAccesses(),
             m.getMeetingExpireIfNoUserJoinedInMinutes(), m.getMeetingExpireWhenLastUserLeftInMinutes(),
             m.getUserInactivityInspectTimerInMinutes(), m.getUserInactivityThresholdInMinutes(),
@@ -424,10 +426,19 @@ public class MeetingService implements MessageListener {
   }
 
   private void processRegisterUser(RegisterUser message) {
+    Map<String, Object> userCustomData = null;
+    Meeting meeting = meetings.get(message.meetingID);
+    if (meeting != null) {
+      userCustomData = meeting.getUserCustomData(message.externUserID);
+    }
+    if (userCustomData == null) {
+      userCustomData = new HashMap<>();
+    }
+
     gw.registerUser(message.meetingID,
       message.internalUserId, message.fullname, message.role,
-      message.externUserID, message.authToken, message.avatarURL, message.guest,
-            message.authed, message.guestStatus, message.excludeFromDashboard);
+      message.externUserID, message.authToken, message.avatarURL, message.webcamBackgroundURL, message.guest,
+            message.authed, message.guestStatus, message.excludeFromDashboard, userCustomData);
   }
 
     public Meeting getMeeting(String meetingId) {
@@ -660,7 +671,9 @@ public class MeetingService implements MessageListener {
 
       presDownloadService.extractPresentationPage(message.parentMeetingId,
         message.sourcePresentationId,
-        message.sourcePresentationSlide, breakout.getInternalId());
+        message.sourcePresentationSlide,
+        breakout.getInternalId(),
+        message.sourcePresentationFilename);
     } else {
       Map<String, Object> logData = new HashMap<String, Object>();
       logData.put("meetingId", message.meetingId);
@@ -922,7 +935,7 @@ public class MeetingService implements MessageListener {
       }
 
       User user = new User(message.userId, message.externalUserId,
-        message.name, message.role, message.avatarURL, message.guest, message.guestStatus,
+        message.name, message.role, message.avatarURL, message.webcamBackgroundURL, message.guest, message.guestStatus,
               message.clientType);
 
       if(m.getMaxUsers() > 0 && m.countUniqueExtIds() >= m.getMaxUsers()) {
@@ -1042,8 +1055,8 @@ public class MeetingService implements MessageListener {
       } else {
         if (message.userId.startsWith("v_")) {
           // A dial-in user joined the meeting. Dial-in users by convention has userId that starts with "v_".
-                    User vuser = new User(message.userId, message.userId, message.name, "DIAL-IN-USER", "",
-                            true, GuestPolicy.ALLOW, "DIAL-IN");
+          User vuser = new User(message.userId, message.userId, message.name, "DIAL-IN-USER", "", "",
+                  true, GuestPolicy.ALLOW, "DIAL-IN");
           vuser.setVoiceJoined(true);
           m.userJoined(vuser);
         }

bbb-common-web/src/main/java/org/bigbluebutton/api/ParamsProcessorUtil.java

@@ -84,8 +84,11 @@ public class ParamsProcessorUtil {
     private Integer defaultHttpSessionTimeout = 14400;
     private Boolean useDefaultAvatar = false;
     private String defaultAvatarURL;
+    private Boolean useDefaultWebcamBackground = false;
+    private String defaultWebcamBackgroundURL;
     private String defaultGuestPolicy;
     private Boolean authenticatedGuest;
+    private Boolean defaultAllowPromoteGuestToModerator;
     private String defaultMeetingLayout;
     private int defaultMeetingDuration;
     private boolean disableRecordingDefault;
@@ -676,7 +679,12 @@ public class ParamsProcessorUtil {
         String guestPolicy = defaultGuestPolicy;
         if (!StringUtils.isEmpty(params.get(ApiParams.GUEST_POLICY))) {
         	guestPolicy = params.get(ApiParams.GUEST_POLICY);
-		    }
+		}
+
+        Boolean allowPromoteGuestToModerator = defaultAllowPromoteGuestToModerator;
+        if (!StringUtils.isEmpty(params.get(ApiParams.ALLOW_PROMOTE_GUEST_TO_MODERATOR))) {
+            allowPromoteGuestToModerator = Boolean.parseBoolean(params.get(ApiParams.ALLOW_PROMOTE_GUEST_TO_MODERATOR));
+        }
 
         String presentationUploadExternalDescription = defaultPresentationUploadExternalDescription;
         if (!StringUtils.isEmpty(params.get(ApiParams.PRESENTATION_UPLOAD_EXTERNAL_DESCRIPTION))) {
@@ -735,6 +743,7 @@ public class ParamsProcessorUtil {
         }
 
         String avatarURL = useDefaultAvatar ? defaultAvatarURL : "";
+        String webcamBackgroundURL = useDefaultWebcamBackground ? defaultWebcamBackgroundURL : "";
 
         int html5InstanceId = processHtml5InstanceId(params.get(ApiParams.HTML5_INSTANCE_ID));
 
@@ -754,6 +763,7 @@ public class ParamsProcessorUtil {
                 .withTelVoice(telVoice).withWebVoice(webVoice)
                 .withDialNumber(dialNumber)
                 .withDefaultAvatarURL(avatarURL)
+                .withDefaultWebcamBackgroundURL(webcamBackgroundURL)
                 .withAutoStartRecording(autoStartRec)
                 .withAllowStartStopRecording(allowStartStoptRec)
                 .withRecordFullDurationMedia(_recordFullDurationMedia)
@@ -766,6 +776,7 @@ public class ParamsProcessorUtil {
                 .withWelcomeMessage(welcomeMessage).isBreakout(isBreakout)
                 .withGuestPolicy(guestPolicy)
                 .withAuthenticatedGuest(authenticatedGuest)
+                .withAllowPromoteGuestToModerator(allowPromoteGuestToModerator)
                 .withAllowRequestsWithoutSession(allowRequestsWithoutSession)
                 .withMeetingLayout(meetingLayout)
 				.withBreakoutRoomsParams(breakoutParams)
@@ -1156,6 +1167,11 @@ public class ParamsProcessorUtil {
 		return true;
 	}
 
+	public boolean parentMeetingExists(String parentMeetingId) {
+        Meeting meeting = ServiceUtils.findMeetingFromMeetingID(parentMeetingId);
+        return meeting != null;
+    }
+
 	/*************************************************
 	 * Setters
 	 ************************************************/
@@ -1284,6 +1300,14 @@ public class ParamsProcessorUtil {
 		this.defaultAvatarURL = url;
 	}
 
+    public void setUseDefaultWebcamBackground(Boolean value) {
+        this.useDefaultWebcamBackground = value;
+    }
+
+    public void setDefaultWebcamBackgroundURL(String uri) {
+        this.defaultWebcamBackgroundURL = uri;
+    }
+
 	public void setDefaultGuestPolicy(String guestPolicy) {
 		this.defaultGuestPolicy =  guestPolicy;
 	}
@@ -1292,7 +1316,11 @@ public class ParamsProcessorUtil {
 		this.authenticatedGuest = value;
 	}
 
-  public void setDefaultMeetingLayout(String meetingLayout) {
+    public void setDefaultAllowPromoteGuestToModerator(Boolean value) {
+        this.defaultAllowPromoteGuestToModerator = value;
+    }
+
+	public void setDefaultMeetingLayout(String meetingLayout) {
 		this.defaultMeetingLayout =  meetingLayout;
 	}
 

bbb-common-web/src/main/java/org/bigbluebutton/api/Util.java

@@ -2,11 +2,14 @@ package org.bigbluebutton.api;
 
 import java.io.File;
 import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
 import java.util.UUID;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 
 public final class Util {
@@ -50,8 +53,19 @@ public final class Util {
 		return DigestUtils.sha1Hex(presFilename + uuid) + "-" + timestamp;
 	}
 
+	public static String extractFilenameFromUrl(String preUploadedPresentation) throws MalformedURLException {
+		URL url = new URL(preUploadedPresentation);
+		String filename = FilenameUtils.getName(url.getPath());
+		String extension = FilenameUtils.getExtension(url.getPath());
+		if (extension == null || extension.isEmpty()) return null;
+		return filename;
+	}
 	public static String createNewFilename(String presId, String fileExt) {
-		return presId + "." + fileExt;
+		if (!fileExt.isEmpty()) {
+			return presId + "." + fileExt;
+		} else {
+			return presId;
+		}
 	}
 	
 	public static File createPresentationDir(String meetingId, String presentationDir, String presentationId) {

bbb-common-web/src/main/java/org/bigbluebutton/api/domain/Meeting.java

@@ -79,10 +79,12 @@ public class Meeting {
 	private Integer maxPinnedCameras = 0;
 	private String dialNumber;
 	private String defaultAvatarURL;
+	private String defaultWebcamBackgroundURL;
 	private String guestPolicy = GuestPolicy.ASK_MODERATOR;
 	private String guestLobbyMessage = "";
 	private Map<String,String> usersWithGuestLobbyMessages;
 	private Boolean authenticatedGuest = false;
+	private Boolean allowPromoteGuestToModerator = false;
 	private String meetingLayout = MeetingLayout.SMART_LAYOUT;
 	private boolean userHasJoined = false;
 	private Map<String, String> guestUsersWithPositionInWaitingLine;
@@ -147,6 +149,7 @@ public class Meeting {
         logoutUrl = builder.logoutUrl;
         logoutTimer = builder.logoutTimer;
         defaultAvatarURL = builder.defaultAvatarURL;
+		defaultWebcamBackgroundURL = builder.defaultWebcamBackgroundURL;
         record = builder.record;
         autoStartRecording = builder.autoStartRecording;
         allowStartStopRecording = builder.allowStartStopRecording;
@@ -166,6 +169,7 @@ public class Meeting {
         isBreakout = builder.isBreakout;
         guestPolicy = builder.guestPolicy;
         authenticatedGuest = builder.authenticatedGuest;
+		allowPromoteGuestToModerator = builder.allowPromoteGuestToModerator;
 		meetingLayout = builder.meetingLayout;
         allowRequestsWithoutSession = builder.allowRequestsWithoutSession;
         breakoutRoomsParams = builder.breakoutRoomsParams;
@@ -460,6 +464,10 @@ public class Meeting {
 		return defaultAvatarURL;
 	}
 
+	public String getDefaultWebcamBackgroundURL() {
+		return defaultWebcamBackgroundURL;
+	}
+
 	public void setWaitingPositionsInWaitingQueue(HashMap<String, String> guestUsersWithPositionInWaitingLine) {
 		this.guestUsersWithPositionInWaitingLine = guestUsersWithPositionInWaitingLine;
 	}
@@ -499,6 +507,14 @@ public class Meeting {
 		return authenticatedGuest;
 	}
 
+	public void setAllowPromoteGuestToModerator(Boolean value) {
+		allowPromoteGuestToModerator = value;
+	}
+
+	public Boolean getAllowPromoteGuestToModerator() {
+		return allowPromoteGuestToModerator;
+	}
+
 	public void setMeetingLayout(String layout) {
 		meetingLayout = layout;
 	}
@@ -899,10 +915,12 @@ public class Meeting {
     	private Map<String, String> metadata;
     	private String dialNumber;
     	private String defaultAvatarURL;
+		private String defaultWebcamBackgroundURL;
     	private long createdTime;
     	private boolean isBreakout;
     	private String guestPolicy;
     	private Boolean authenticatedGuest;
+		private Boolean allowPromoteGuestToModerator;
     	private Boolean allowRequestsWithoutSession;
 		private String meetingLayout;
     	private BreakoutRoomsParams breakoutRoomsParams;
@@ -1045,6 +1063,11 @@ public class Meeting {
     		return this;
     	}
 
+		public Builder withDefaultWebcamBackgroundURL(String w) {
+    		defaultWebcamBackgroundURL = w;
+    		return this;
+    	}
+
     	public Builder isBreakout(Boolean b) {
     	  isBreakout = b;
     	  return this;
@@ -1085,15 +1108,20 @@ public class Meeting {
     		return this;
     	}
 
-    	public Builder withAllowRequestsWithoutSession(Boolean value) {
+		public Builder withAllowPromoteGuestToModerator(Boolean value) {
+			allowPromoteGuestToModerator = value;
+			return this;
+		}
+
+		public Builder withAllowRequestsWithoutSession(Boolean value) {
     		allowRequestsWithoutSession = value;
     		return this;
     	}
 
-			public Builder withMeetingLayout(String layout) {
-				meetingLayout = layout;
-				return this;
-			}
+		public Builder withMeetingLayout(String layout) {
+			meetingLayout = layout;
+			return this;
+		}
 
 		public Builder withBreakoutRoomsParams(BreakoutRoomsParams params) {
     		breakoutRoomsParams = params;

bbb-common-web/src/main/java/org/bigbluebutton/api/domain/User.java

@@ -31,6 +31,7 @@ public class User {
 	private String fullname;
 	private String role;
 	private String avatarURL;
+	private String webcamBackgroundURL;
 	private Map<String,String> status;
 	private Boolean guest;
 	private String  guestStatus;
@@ -45,6 +46,7 @@ public class User {
 							String fullname,
 							String role,
 							String avatarURL,
+							String webcamBackgroundURL,
 							Boolean guest,
 							String  guestStatus,
 							String clientType) {
@@ -53,6 +55,7 @@ public class User {
 		this.fullname = fullname;
 		this.role = role;
 		this.avatarURL = avatarURL;
+		this.webcamBackgroundURL = webcamBackgroundURL;
 		this.guest = guest;
 		this.guestStatus = guestStatus;
 		this.status = new ConcurrentHashMap<>();
@@ -128,6 +131,14 @@ public class User {
 		this.avatarURL = avatarURL;
 	}
 
+	public String getWebcamBackgroundUrl() {
+		return webcamBackgroundURL;
+	}
+
+	public void setWebcamBackgroundUrl(String webcamBackgroundURL) {
+		this.webcamBackgroundURL = webcamBackgroundURL;
+	}
+
 	public boolean isModerator() {
 		return "MODERATOR".equalsIgnoreCase(this.role);
 	}

bbb-common-web/src/main/java/org/bigbluebutton/api/domain/UserSession.java

@@ -42,6 +42,7 @@ public class UserSession {
   public String logoutUrl = null;
   public String defaultLayout = "NOLAYOUT";
   public String avatarURL;
+  public String webcamBackgroundURL;
   public String guestStatus = GuestPolicy.ALLOW;
   public String clientUrl = null;
   public Boolean excludeFromDashboard = false;
@@ -134,6 +135,10 @@ public class UserSession {
     return avatarURL;
   }
 
+  public String getWebcamBackgroundURL() {
+    return webcamBackgroundURL;
+  }
+
   public String getGuestStatus() {
     return guestStatus;
   }

bbb-common-web/src/main/java/org/bigbluebutton/api/messaging/messages/CreateBreakoutRoom.java

@@ -17,6 +17,7 @@ public class CreateBreakoutRoom implements IMessage {
     public final Integer durationInMinutes; // The duration of the breakout room
     public final String sourcePresentationId;
     public final Integer sourcePresentationSlide;
+    public final String sourcePresentationFilename;
     public final Boolean record;
     public final Boolean privateChatEnabled;
     public final Boolean captureNotes; // Upload shared notes to main room after breakout room end
@@ -38,6 +39,7 @@ public class CreateBreakoutRoom implements IMessage {
 															Integer duration,
 															String sourcePresentationId,
 															Integer sourcePresentationSlide,
+                                                            String sourcePresentationFilename,
 															Boolean record,
 															Boolean privateChatEnabled,
                                                             Boolean captureNotes,
@@ -58,6 +60,7 @@ public class CreateBreakoutRoom implements IMessage {
         this.durationInMinutes = duration;
         this.sourcePresentationId = sourcePresentationId;
         this.sourcePresentationSlide = sourcePresentationSlide;
+        this.sourcePresentationFilename  = sourcePresentationFilename;
         this.record = record;
         this.privateChatEnabled = privateChatEnabled;
         this.captureNotes = captureNotes;

bbb-common-web/src/main/java/org/bigbluebutton/api/messaging/messages/RegisterUser.java

@@ -10,6 +10,7 @@ public class RegisterUser implements IMessage {
 	public final String externUserID;
 	public final String authToken;
 	public final String avatarURL;
+	public final String webcamBackgroundURL;
 	public final Boolean guest;
 	public final Boolean authed;
 	public final String guestStatus;
@@ -17,7 +18,7 @@ public class RegisterUser implements IMessage {
 	public final Boolean leftGuestLobby;
 
 	public RegisterUser(String meetingID, String internalUserId, String fullname, String role, String externUserID,
-						String authToken, String avatarURL, Boolean guest,
+						String authToken, String avatarURL, String webcamBackgroundURL, Boolean guest,
 						Boolean authed, String guestStatus, Boolean excludeFromDashboard, Boolean leftGuestLobby) {
 		this.meetingID = meetingID;
 		this.internalUserId = internalUserId;
@@ -25,7 +26,8 @@ public class RegisterUser implements IMessage {
 		this.role = role;
 		this.externUserID = externUserID;
 		this.authToken = authToken;		
-		this.avatarURL = avatarURL;		
+		this.avatarURL = avatarURL;
+		this.webcamBackgroundURL = webcamBackgroundURL;
 		this.guest = guest;
 		this.authed = authed;
 		this.guestStatus = guestStatus;

bbb-common-web/src/main/java/org/bigbluebutton/api/messaging/messages/UserJoined.java

@@ -7,6 +7,7 @@ public class UserJoined implements IMessage {
   public final String name;
   public final String role;
   public final String avatarURL;
+  public final String webcamBackgroundURL;
   public final Boolean guest;
   public final String guestStatus;
 	public final String clientType;
@@ -18,6 +19,7 @@ public class UserJoined implements IMessage {
 										String name,
 										String role,
 										String avatarURL,
+										String webcamBackgroundURL,
 										Boolean guest,
 										String guestStatus,
 										String clientType) {
@@ -27,6 +29,7 @@ public class UserJoined implements IMessage {
   	this.name = name;
   	this.role = role;
   	this.avatarURL = avatarURL;
+	this.webcamBackgroundURL = webcamBackgroundURL;
   	this.guest = guest;
   	this.guestStatus = guestStatus;
   	this.clientType = clientType;

bbb-common-web/src/main/java/org/bigbluebutton/api/model/constraint/ContentTypeConstraint.java

@@ -1,22 +1,22 @@
-package org.bigbluebutton.api.model.constraint;
-
-import org.bigbluebutton.api.model.validator.PostChecksumValidator;
-
-import javax.validation.Constraint;
-import javax.validation.Payload;
-import java.lang.annotation.Retention;
-import java.lang.annotation.Target;
-
-import static java.lang.annotation.ElementType.TYPE;
-import static java.lang.annotation.RetentionPolicy.RUNTIME;
-
-@Constraint(validatedBy = PostChecksumValidator.class)
-@Target(TYPE)
-@Retention(RUNTIME)
-public @interface PostChecksumConstraint {
-
-    String key() default "checksumError";
-    String message() default "Checksums do not match";
-    Class<?>[] groups() default {};
-    Class<? extends Payload>[] payload() default {};
-}
+package org.bigbluebutton.api.model.constraint;
+
+import org.bigbluebutton.api.model.validator.ContentTypeValidator;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Constraint(validatedBy = ContentTypeValidator.class)
+@Target(TYPE)
+@Retention(RUNTIME)
+public @interface ContentTypeConstraint {
+
+    String key() default "unsupportedContentType";
+    String message() default "POST request Content-Type is missing or unsupported";
+    Class<?>[] groups() default {};
+    Class<? extends Payload>[] payload() default {};
+}

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/CreateMeeting.java

@@ -1,12 +1,16 @@
 package org.bigbluebutton.api.model.request;
 
+import jakarta.ws.rs.core.MediaType;
 import org.bigbluebutton.api.model.constraint.*;
 import org.bigbluebutton.api.model.shared.Checksum;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.constraints.NotEmpty;
 import javax.validation.constraints.NotNull;
 import java.util.Map;
+import java.util.Set;
 
+@ContentTypeConstraint
 public class CreateMeeting extends RequestWithChecksum<CreateMeeting.Params> {
 
     public enum Params implements RequestParameters {
@@ -51,8 +55,8 @@ public class CreateMeeting extends RequestWithChecksum<CreateMeeting.Params> {
     private String recordString;
     private Boolean record;
 
-    public CreateMeeting(Checksum checksum) {
-        super(checksum);
+    public CreateMeeting(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
     }
 
     public String getName() {
@@ -138,4 +142,9 @@ public class CreateMeeting extends RequestWithChecksum<CreateMeeting.Params> {
         isBreakoutRoom = Boolean.parseBoolean(isBreakoutRoomString);
         record = Boolean.parseBoolean(recordString);
     }
+
+    @Override
+    public Set<String> getSupportedContentTypes() {
+        return Set.of(MediaType.APPLICATION_FORM_URLENCODED, MediaType.MULTIPART_FORM_DATA, MediaType.APPLICATION_XML, MediaType.TEXT_XML);
+    }
 }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/EndMeeting.java

@@ -1,16 +1,16 @@
 package org.bigbluebutton.api.model.request;
 
-import org.bigbluebutton.api.model.constraint.MeetingExistsConstraint;
-import org.bigbluebutton.api.model.constraint.MeetingIDConstraint;
-import org.bigbluebutton.api.model.constraint.NotEmpty;
-import org.bigbluebutton.api.model.constraint.PasswordConstraint;
+import org.bigbluebutton.api.model.constraint.*;
 import org.bigbluebutton.api.model.shared.Checksum;
 import org.bigbluebutton.api.model.shared.ModeratorPassword;
 import org.bigbluebutton.api.model.shared.Password;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.Valid;
 import java.util.Map;
+import java.util.Set;
 
+@ContentTypeConstraint
 public class EndMeeting extends RequestWithChecksum<EndMeeting.Params> {
 
     public enum Params implements RequestParameters {
@@ -34,8 +34,8 @@ public class EndMeeting extends RequestWithChecksum<EndMeeting.Params> {
     @Valid
     private Password moderatorPassword;
 
-    public EndMeeting(Checksum checksum) {
-        super(checksum);
+    public EndMeeting(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
         moderatorPassword = new ModeratorPassword();
     }
 

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/Enter.java

@@ -1,11 +1,16 @@
 package org.bigbluebutton.api.model.request;
 
+import jakarta.ws.rs.core.MediaType;
 import org.bigbluebutton.api.model.constraint.*;
 import org.bigbluebutton.api.service.SessionService;
+
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.constraints.NotNull;
 import java.util.Map;
+import java.util.Set;
 
-public class Enter implements Request<Enter.Params> {
+@ContentTypeConstraint
+public class Enter extends RequestWithSession<Enter.Params>{
 
     public enum Params implements RequestParameters {
         SESSION_TOKEN("sessionToken");
@@ -27,7 +32,8 @@ public class Enter implements Request<Enter.Params> {
 
     private SessionService sessionService;
 
-    public Enter() {
+    public Enter(HttpServletRequest servletRequest) {
+        super(servletRequest);
         sessionService = new SessionService();
     }
 

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/GetJoinUrl.java

@@ -2,9 +2,10 @@ package org.bigbluebutton.api.model.request;
 
 import org.bigbluebutton.api.model.constraint.UserSessionConstraint;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
 
-public class GetJoinUrl implements Request<GetJoinUrl.Params> {
+public class GetJoinUrl extends RequestWithSession<GetJoinUrl.Params> {
 
     public enum Params implements RequestParameters {
         SESSION_TOKEN("sessionToken");
@@ -19,6 +20,10 @@ public class GetJoinUrl implements Request<GetJoinUrl.Params> {
     @UserSessionConstraint
     private String sessionToken;
 
+    public GetJoinUrl(HttpServletRequest servletRequest) {
+        super(servletRequest);
+    }
+
     public String getSessionToken() {
         return sessionToken;
     }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/GuestWait.java

@@ -1,14 +1,17 @@
 package org.bigbluebutton.api.model.request;
 
+import org.bigbluebutton.api.model.constraint.ContentTypeConstraint;
 import org.bigbluebutton.api.model.constraint.MeetingEndedConstraint;
 import org.bigbluebutton.api.model.constraint.MeetingExistsConstraint;
 import org.bigbluebutton.api.model.constraint.UserSessionConstraint;
 import org.bigbluebutton.api.service.SessionService;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.constraints.NotNull;
 import java.util.Map;
 
-public class GuestWait implements Request<GuestWait.Params> {
+@ContentTypeConstraint
+public class GuestWait extends RequestWithSession<GuestWait.Params>{
 
     public enum Params implements RequestParameters {
         SESSION_TOKEN("sessionToken");
@@ -29,7 +32,8 @@ public class GuestWait implements Request<GuestWait.Params> {
 
     private SessionService sessionService;
 
-    public GuestWait() {
+    public GuestWait(HttpServletRequest servletRequest) {
+        super(servletRequest);
         sessionService = new SessionService();
     }
 

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/InsertDocument.java

@@ -1,11 +1,14 @@
 package org.bigbluebutton.api.model.request;
 
+import jakarta.ws.rs.core.MediaType;
 import org.bigbluebutton.api.model.constraint.*;
 import org.bigbluebutton.api.model.shared.Checksum;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
+import java.util.Set;
 
-
+@ContentTypeConstraint
 public class InsertDocument extends RequestWithChecksum<InsertDocument.Params> {
 
     public enum Params implements RequestParameters {
@@ -21,8 +24,8 @@ public class InsertDocument extends RequestWithChecksum<InsertDocument.Params> {
     @MeetingIDConstraint
     private String meetingID;
 
-    public InsertDocument(Checksum checksum) {
-        super(checksum);
+    public InsertDocument(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
     }
 
     public String getMeetingID() {
@@ -37,4 +40,9 @@ public class InsertDocument extends RequestWithChecksum<InsertDocument.Params> {
     public void populateFromParamsMap(Map<String, String[]> params) {
         if(params.containsKey(Params.MEETING_ID.getValue())) setMeetingID(params.get(Params.MEETING_ID.getValue())[0]);
     }
+
+    @Override
+    public Set<String> getSupportedContentTypes() {
+        return Set.of(MediaType.APPLICATION_XML, MediaType.TEXT_XML);
+    }
 }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/JoinMeeting.java

@@ -5,9 +5,11 @@ import org.bigbluebutton.api.model.shared.Checksum;
 import org.bigbluebutton.api.model.shared.JoinPassword;
 import org.bigbluebutton.api.model.shared.Password;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.Valid;
 import java.util.Map;
 
+@ContentTypeConstraint
 public class JoinMeeting extends RequestWithChecksum<JoinMeeting.Params> {
 
     public enum Params implements RequestParameters {
@@ -57,8 +59,8 @@ public class JoinMeeting extends RequestWithChecksum<JoinMeeting.Params> {
     @Valid
     private Password joinPassword;
 
-    public JoinMeeting(Checksum checksum) {
-        super(checksum);
+    public JoinMeeting(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
         joinPassword = new JoinPassword();
     }
 

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/LearningDashboard.java

@@ -2,10 +2,11 @@ package org.bigbluebutton.api.model.request;
 
 import org.bigbluebutton.api.model.constraint.UserSessionConstraint;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.constraints.NotNull;
 import java.util.Map;
 
-public class LearningDashboard implements Request<LearningDashboard.Params> {
+public class LearningDashboard extends RequestWithSession<LearningDashboard.Params> {
 
     public enum Params implements RequestParameters {
         SESSION_TOKEN("sessionToken");
@@ -20,6 +21,10 @@ public class LearningDashboard implements Request<LearningDashboard.Params> {
     @UserSessionConstraint
     private String sessionToken;
 
+    public LearningDashboard(HttpServletRequest servletRequest) {
+        super(servletRequest);
+    }
+
     public String getSessionToken() {
         return sessionToken;
     }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/MeetingInfo.java

@@ -1,11 +1,14 @@
 package org.bigbluebutton.api.model.request;
 
+import org.bigbluebutton.api.model.constraint.ContentTypeConstraint;
 import org.bigbluebutton.api.model.constraint.MeetingExistsConstraint;
 import org.bigbluebutton.api.model.constraint.MeetingIDConstraint;
 import org.bigbluebutton.api.model.shared.Checksum;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
 
+@ContentTypeConstraint
 public class MeetingInfo extends RequestWithChecksum<MeetingInfo.Params> {
 
     public enum Params implements RequestParameters {
@@ -22,8 +25,8 @@ public class MeetingInfo extends RequestWithChecksum<MeetingInfo.Params> {
     @MeetingExistsConstraint
     private String meetingID;
 
-    public MeetingInfo(Checksum checksum) {
-        super(checksum);
+    public MeetingInfo(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
     }
 
     public String getMeetingID() {

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/MeetingRunning.java

@@ -1,10 +1,13 @@
 package org.bigbluebutton.api.model.request;
 
+import org.bigbluebutton.api.model.constraint.ContentTypeConstraint;
 import org.bigbluebutton.api.model.constraint.MeetingIDConstraint;
 import org.bigbluebutton.api.model.shared.Checksum;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
 
+@ContentTypeConstraint
 public class MeetingRunning extends RequestWithChecksum<MeetingRunning.Params> {
 
     public enum Params implements RequestParameters {
@@ -20,8 +23,8 @@ public class MeetingRunning extends RequestWithChecksum<MeetingRunning.Params> {
     @MeetingIDConstraint
     private String meetingID;
 
-    public MeetingRunning(Checksum checksum) {
-        super(checksum);
+    public MeetingRunning(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
     }
 
     public String getMeetingID() {

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/Request.java

@@ -1,9 +1,13 @@
 package org.bigbluebutton.api.model.request;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
+import java.util.Set;
 
 public interface Request<P extends Enum<P> & RequestParameters> {
 
     void populateFromParamsMap(Map<String, String[]> params);
     void convertParamsFromString();
+    Set<String> getSupportedContentTypes();
+    HttpServletRequest getServletRequest();
 }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/RequestWithChecksum.java

@@ -1,17 +1,23 @@
 package org.bigbluebutton.api.model.request;
 
+import jakarta.ws.rs.core.MediaType;
 import org.bigbluebutton.api.model.shared.Checksum;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.Valid;
 import java.util.Map;
+import java.util.Set;
 
 public abstract class RequestWithChecksum<P extends Enum<P> & RequestParameters> implements Request<P> {
 
     @Valid
     protected Checksum checksum;
 
-    protected RequestWithChecksum(Checksum checksum) {
+    protected HttpServletRequest servletRequest;
+
+    protected RequestWithChecksum(Checksum checksum, HttpServletRequest servletRequest) {
         this.checksum = checksum;
+        this.servletRequest = servletRequest;
     }
 
     public Checksum getChecksum() {
@@ -27,4 +33,14 @@ public abstract class RequestWithChecksum<P extends Enum<P> & RequestParameters>
     public void convertParamsFromString() {
 
     }
+
+    @Override
+    public Set<String> getSupportedContentTypes() {
+        return Set.of(MediaType.APPLICATION_FORM_URLENCODED, MediaType.MULTIPART_FORM_DATA);
+    }
+
+    @Override
+    public HttpServletRequest getServletRequest() {
+        return servletRequest;
+    }
 }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/RequestWithSession.java

@@ -0,0 +1,25 @@
+package org.bigbluebutton.api.model.request;
+
+import jakarta.ws.rs.core.MediaType;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Set;
+
+public abstract class RequestWithSession<P extends Enum<P> & RequestParameters> implements Request<P> {
+
+    protected HttpServletRequest servletRequest;
+
+    protected RequestWithSession(HttpServletRequest servletRequest) {
+        this.servletRequest = servletRequest;
+    }
+
+    @Override
+    public Set<String> getSupportedContentTypes() {
+        return Set.of(MediaType.APPLICATION_FORM_URLENCODED, MediaType.MULTIPART_FORM_DATA);
+    }
+
+    @Override
+    public HttpServletRequest getServletRequest() {
+        return servletRequest;
+    }
+}

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/SignOut.java

@@ -2,10 +2,11 @@ package org.bigbluebutton.api.model.request;
 
 import org.bigbluebutton.api.model.constraint.UserSessionConstraint;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.constraints.NotNull;
 import java.util.Map;
 
-public class SignOut implements Request<SignOut.Params> {
+public class SignOut extends RequestWithSession<SignOut.Params> {
 
     public enum Params implements RequestParameters {
         SESSION_TOKEN("sessionToken");
@@ -20,6 +21,10 @@ public class SignOut implements Request<SignOut.Params> {
     @UserSessionConstraint
     private String sessionToken;
 
+    public SignOut(HttpServletRequest servletRequest) {
+        super(servletRequest);
+    }
+
     public String getSessionToken() {
         return sessionToken;
     }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/SimpleRequest.java

@@ -1,9 +1,12 @@
 package org.bigbluebutton.api.model.request;
 
+import org.bigbluebutton.api.model.constraint.ContentTypeConstraint;
 import org.bigbluebutton.api.model.shared.Checksum;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
 
+@ContentTypeConstraint
 public class SimpleRequest extends RequestWithChecksum<SimpleRequest.Params> {
 
     public enum Params implements RequestParameters {
@@ -16,8 +19,8 @@ public class SimpleRequest extends RequestWithChecksum<SimpleRequest.Params> {
         public String getValue() { return value; }
     }
 
-    public SimpleRequest(Checksum checksum) {
-        super(checksum);
+    public SimpleRequest(Checksum checksum, HttpServletRequest servletRequest) {
+        super(checksum, servletRequest);
     }
 
     @Override

bbb-common-web/src/main/java/org/bigbluebutton/api/model/request/Stuns.java

@@ -3,9 +3,11 @@ package org.bigbluebutton.api.model.request;
 import org.bigbluebutton.api.model.constraint.*;
 import org.bigbluebutton.api.service.SessionService;
 
+import javax.servlet.http.HttpServletRequest;
 import java.util.Map;
 
-public class Stuns implements Request<Stuns.Params> {
+@ContentTypeConstraint
+public class Stuns extends RequestWithSession<Stuns.Params> {
 
     public enum Params implements RequestParameters {
         SESSION_TOKEN("sessionToken");
@@ -26,7 +28,10 @@ public class Stuns implements Request<Stuns.Params> {
 
     private SessionService sessionService;
 
-    public Stuns() { sessionService = new SessionService(); }
+    public Stuns(HttpServletRequest servletRequest) {
+        super(servletRequest);
+        sessionService = new SessionService();
+    }
 
     public String getSessionToken() {
         return sessionToken;

bbb-common-web/src/main/java/org/bigbluebutton/api/model/shared/Checksum.java

@@ -1,8 +1,11 @@
 package org.bigbluebutton.api.model.shared;
 
+import org.bigbluebutton.api.model.constraint.ContentTypeConstraint;
 import org.bigbluebutton.api.model.constraint.NotEmpty;
 import org.bigbluebutton.api.util.ParamsUtil;
 
+import javax.servlet.http.HttpServletRequest;
+
 public abstract class Checksum {
 
     @NotEmpty(message = "You must provide the API call", groups = ChecksumValidationGroup.class)
@@ -13,9 +16,12 @@ public abstract class Checksum {
 
     protected String queryStringWithoutChecksum;
 
-    public Checksum(String apiCall, String checksum) {
+    protected HttpServletRequest request;
+
+    public Checksum(String apiCall, String checksum, HttpServletRequest request) {
         this.apiCall = ParamsUtil.sanitizeString(apiCall);
         this.checksum = ParamsUtil.sanitizeString(checksum);
+        this.request = request;
     }
 
     public String getApiCall() {
@@ -41,4 +47,12 @@ public abstract class Checksum {
     public void setQueryStringWithoutChecksum(String queryStringWithoutChecksum) {
         this.queryStringWithoutChecksum = queryStringWithoutChecksum;
     }
+
+    public void setRequest(HttpServletRequest request) {
+        this.request = request;
+    }
+
+    public HttpServletRequest getRequest() {
+        return request;
+    }
 }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/shared/GetChecksum.java

@@ -3,16 +3,16 @@ package org.bigbluebutton.api.model.shared;
 import org.bigbluebutton.api.model.constraint.GetChecksumConstraint;
 import org.bigbluebutton.api.util.ParamsUtil;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.constraints.NotEmpty;
 
 @GetChecksumConstraint(groups = ChecksumValidationGroup.class)
 public class GetChecksum extends Checksum {
-
-    @NotEmpty(message = "You must provide the query string")
+    
     private String queryString;
 
-    public GetChecksum(String apiCall, String checksum, String queryString) {
-        super(apiCall, checksum);
+    public GetChecksum(String apiCall, String checksum, String queryString, HttpServletRequest request) {
+        super(apiCall, checksum, request);
         this.queryString = ParamsUtil.sanitizeString(queryString);
         removeChecksumFromQueryString();
     }

bbb-common-web/src/main/java/org/bigbluebutton/api/model/shared/PostChecksum.java

@@ -1,22 +0,0 @@
-package org.bigbluebutton.api.model.shared;
-
-import org.bigbluebutton.api.model.constraint.PostChecksumConstraint;
-import org.bigbluebutton.api.service.ValidationService;
-
-import java.util.Map;
-
-@PostChecksumConstraint(groups = ChecksumValidationGroup.class)
-public class PostChecksum extends Checksum {
-
-    Map<String, String[]> params;
-
-    public PostChecksum(String apiCall, String checksum, Map<String, String[]> params) {
-        super(apiCall, checksum);
-        this.params = params;
-        queryStringWithoutChecksum = ValidationService.buildQueryStringFromParamsMap(params);
-    }
-
-    public Map<String, String[]> getParams() { return params; }
-
-    public void setParams(Map<String, String[]> params) { this.params = params; }
-}

bbb-common-web/src/main/java/org/bigbluebutton/api/model/validator/ContentTypeValidator.java

@@ -0,0 +1,48 @@
+package org.bigbluebutton.api.model.validator;
+
+import org.apache.http.entity.ContentType;
+import org.bigbluebutton.api.model.constraint.ContentTypeConstraint;
+import org.bigbluebutton.api.model.request.Request;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+public class ContentTypeValidator implements ConstraintValidator<ContentTypeConstraint, Request> {
+
+    private static final Logger log = LoggerFactory.getLogger(ContentTypeValidator.class);
+
+    @Override
+    public void initialize(ContentTypeConstraint constraintAnnotation) {}
+
+    @Override
+    public boolean isValid(Request request, ConstraintValidatorContext context) {
+        HttpServletRequest servletRequest = request.getServletRequest();
+        String requestMethod = servletRequest.getMethod();
+        String contentType = servletRequest.getContentType();
+        String contentTypeHeader = servletRequest.getHeader("Content-Type");
+        log.info("Validating {} request with content type {}", requestMethod, contentType);
+
+        boolean requestBodyPresent = servletRequest.getContentLength() > 0;
+        if (requestBodyPresent) {
+            if (contentType == null || contentTypeHeader == null) return false;
+            else {
+                try {
+                    ContentType c = ContentType.parse(contentType);
+                    String mimeType = c.getMimeType();
+                    for (Object o: request.getSupportedContentTypes()) {
+                        String supportedContentType = (String) o;
+                        if (mimeType.equalsIgnoreCase(supportedContentType)) return true;
+                    }
+                } catch (Exception e) {
+                    return false;
+                }
+                return false;
+            }
+        }
+
+        return true;
+    }
+}

bbb-common-web/src/main/java/org/bigbluebutton/api/model/validator/GetChecksumValidator.java

@@ -1,8 +1,10 @@
 package org.bigbluebutton.api.model.validator;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.ConstraintValidator;
 import javax.validation.ConstraintValidatorContext;
 
+import jakarta.ws.rs.core.MediaType;
 import org.apache.commons.codec.digest.DigestUtils;
 import org.bigbluebutton.api.model.constraint.GetChecksumConstraint;
 import org.bigbluebutton.api.model.shared.GetChecksum;

bbb-common-web/src/main/java/org/bigbluebutton/api/model/validator/PostChecksumValidator.java

@@ -1,53 +0,0 @@
-package org.bigbluebutton.api.model.validator;
-
-import org.apache.commons.codec.digest.DigestUtils;
-import org.bigbluebutton.api.model.constraint.PostChecksumConstraint;
-import org.bigbluebutton.api.model.shared.PostChecksum;
-import org.bigbluebutton.api.service.ServiceUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import javax.validation.ConstraintValidator;
-import javax.validation.ConstraintValidatorContext;
-
-public class PostChecksumValidator implements ConstraintValidator<PostChecksumConstraint, PostChecksum> {
-
-    private static Logger log = LoggerFactory.getLogger(PostChecksumValidator.class);
-
-    @Override
-    public void initialize(PostChecksumConstraint constraintAnnotation) {}
-
-    @Override
-    public boolean isValid(PostChecksum checksum, ConstraintValidatorContext context) {
-        String securitySalt = ServiceUtils.getValidationService().getSecuritySalt();
-
-        if (securitySalt.isEmpty()) {
-            log.warn("Security is disabled in this service. Make sure this is intentional.");
-            return true;
-        }
-
-        String queryStringWithoutChecksum = checksum.getQueryStringWithoutChecksum();
-        log.info("query string after checksum removed: [{}]", queryStringWithoutChecksum);
-
-        if(queryStringWithoutChecksum == null) {
-            return false;
-        }
-
-        String providedChecksum = checksum.getChecksum();
-        log.info("CHECKSUM={} length={}", providedChecksum, providedChecksum.length());
-
-        if(providedChecksum == null) {
-            return false;
-        }
-
-        String data = checksum.getApiCall() + queryStringWithoutChecksum + securitySalt;
-        String createdCheckSum = DigestUtils.sha1Hex(data);
-
-        if (createdCheckSum == null || !createdCheckSum.equalsIgnoreCase(providedChecksum)) {
-            log.info("checksumError: failed checksum. our checksum: [{}], client: [{}]", createdCheckSum, providedChecksum);
-            return false;
-        }
-
-        return true;
-    }
-}

bbb-common-web/src/main/java/org/bigbluebutton/api/pub/IPublisherService.java

@@ -22,7 +22,7 @@ public interface IPublisherService {
     void endMeeting(String meetingId);
     void send(String channel, String message);
     void registerUser(String meetingID, String internalUserId, String fullname, String role, String externUserID,
-                      String authToken, String avatarURL, Boolean guest, Boolean excludeFromDashboard, Boolean authed);
+                      String authToken, String avatarURL, String webcamBackgroundURL, Boolean guest, Boolean excludeFromDashboard, Boolean authed);
     void sendKeepAlive(String system, Long bbbWebTimestamp, Long akkaAppsTimestamp);
     void sendStunTurnInfo(String meetingId, String internalUserId, Set<StunServer> stuns, Set<TurnEntry> turns);
 }

bbb-common-web/src/main/java/org/bigbluebutton/api/service/ValidationService.java

@@ -4,16 +4,19 @@ import org.bigbluebutton.api.model.request.*;
 import org.bigbluebutton.api.model.shared.Checksum;
 import org.bigbluebutton.api.model.shared.ChecksumValidationGroup;
 import org.bigbluebutton.api.model.shared.GetChecksum;
-import org.bigbluebutton.api.model.shared.PostChecksum;
 import org.bigbluebutton.api.util.ParamsUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.ConstraintViolation;
 import javax.validation.Validation;
 import javax.validation.Validator;
 import javax.validation.ValidatorFactory;
 import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+import java.net.URL;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
@@ -67,15 +70,22 @@ public class ValidationService {
         validator = validatorFactory.getValidator();
     }
 
-    public Map<String, String> validate(ApiCall apiCall, Map<String, String[]> params, String queryString) {
+    public Map<String, String> validate(ApiCall apiCall, HttpServletRequest servletRequest) {
+        String queryString = servletRequest.getQueryString();
+        Map<String, String[]> params = servletRequest.getParameterMap();
         log.info("Validating {} request with query string {}", apiCall.getName(), queryString);
         params = sanitizeParams(params);
 
-        Request request = initializeRequest(apiCall, params, queryString);
+        Request request = initializeRequest(apiCall, params, queryString, servletRequest);
         Map<String,String> violations = new HashMap<>();
 
         if(request == null) {
             violations.put("validationError", "Request not recognized");
+        } else if(params.containsKey("presentationUploadExternalUrl")) {
+            String urlToValidate = params.get("presentationUploadExternalUrl")[0];
+            if(!this.isValidURL(urlToValidate)) {
+                violations.put("validationError", "Param 'presentationUploadExternalUrl' is not a valid URL");
+            }
         } else {
             request.populateFromParamsMap(params);
             violations = performValidation(request);
@@ -84,7 +94,16 @@ public class ValidationService {
         return violations;
     }
 
-    private Request initializeRequest(ApiCall apiCall, Map<String, String[]> params, String queryString) {
+    boolean isValidURL(String url) {
+        try {
+            new URL(url).toURI();
+            return true;
+        } catch (MalformedURLException | URISyntaxException e) {
+            return false;
+        }
+    }
+
+    private Request initializeRequest(ApiCall apiCall, Map<String, String[]> params, String queryString, HttpServletRequest servletRequest) {
         Request request = null;
         Checksum checksum;
 
@@ -93,55 +112,23 @@ public class ValidationService {
             checksumValue = params.get("checksum")[0];
         }
 
-        if(queryString == null || queryString.isEmpty()) {
-            queryString = buildQueryStringFromParamsMap(params);
-        }
-
-        switch(apiCall.requestType) {
-            case GET:
-                checksum = new GetChecksum(apiCall.getName(), checksumValue, queryString);
-                switch(apiCall) {
-                    case CREATE:
-                        request = new CreateMeeting(checksum);
-                        break;
-                    case JOIN:
-                        request = new JoinMeeting(checksum);
-                        break;
-                    case MEETING_RUNNING:
-                        request = new MeetingRunning(checksum);
-                        break;
-                    case END:
-                        request = new EndMeeting(checksum);
-                        break;
-                    case GET_MEETING_INFO:
-                        request = new MeetingInfo(checksum);
-                        break;
-                    case GET_MEETINGS:
-                    case GET_SESSIONS:
-                        request = new SimpleRequest(checksum);
-                        break;
-                    case INSERT_DOCUMENT:
-                        request = new InsertDocument(checksum);
-                        break;
-                    case GUEST_WAIT:
-                        request = new GuestWait();
-                        break;
-                    case ENTER:
-                        request = new Enter();
-                        break;
-                    case STUNS:
-                        request = new Stuns();
-                        break;
-                    case SIGN_OUT:
-                        request = new SignOut();
-                        break;
-                    case LEARNING_DASHBOARD:
-                        request = new LearningDashboard();
-                        break;
-                    case GET_JOIN_URL:
-                        request = new GetJoinUrl();
-                        break;
-                }
+        if (Objects.requireNonNull(apiCall.requestType) == RequestType.GET) {
+            checksum = new GetChecksum(apiCall.getName(), checksumValue, queryString, servletRequest);
+            request = switch (apiCall) {
+                case CREATE -> new CreateMeeting(checksum, servletRequest);
+                case JOIN -> new JoinMeeting(checksum, servletRequest);
+                case MEETING_RUNNING -> new MeetingRunning(checksum, servletRequest);
+                case END -> new EndMeeting(checksum, servletRequest);
+                case GET_MEETING_INFO -> new MeetingInfo(checksum, servletRequest);
+                case GET_MEETINGS, GET_SESSIONS -> new SimpleRequest(checksum, servletRequest);
+                case INSERT_DOCUMENT -> new InsertDocument(checksum, servletRequest);
+                case GUEST_WAIT -> new GuestWait(servletRequest);
+                case ENTER -> new Enter(servletRequest);
+                case STUNS -> new Stuns(servletRequest);
+                case SIGN_OUT -> new SignOut(servletRequest);
+                case LEARNING_DASHBOARD -> new LearningDashboard(servletRequest);
+                case GET_JOIN_URL -> new GetJoinUrl(servletRequest);
+            };
         }
 
         return request;

bbb-common-web/src/main/java/org/bigbluebutton/api/util/ParamsUtil.java

@@ -21,6 +21,10 @@ public class ParamsUtil {
     return text.replaceAll("\\p{Cc}", "").trim();
   }
 
+  public static String stripTags(String text) {
+    return text.replaceAll("<[^>]*>", "");
+}
+
   public static String escapeHTMLTags(String value) {
     return StringEscapeUtils.escapeHtml4(value);
   }

bbb-common-web/src/main/java/org/bigbluebutton/api/util/ResponseBuilder.java

@@ -218,12 +218,13 @@ public class ResponseBuilder {
         return xmlText.toString();
     }
 
-    public String buildInsertDocumentResponse(String message, String returnCode) {
+    public String buildInsertDocumentResponse(String messageKey, String message, String returnCode) {
 
         StringWriter xmlText = new StringWriter();
 
         Map<String, Object> data = new HashMap<String, Object>();
         data.put("returnCode", returnCode);
+        data.put("messageKey", messageKey);
         data.put("message", message);
 
         processData(getTemplate("insert-document.ftlx"), data, xmlText);