tv-casting-app: fix TargetVideoPlayerInfo mem corruption (#257)

Author: sharadb-amazon

examples/tv-casting-app/android/App/app/src/main/jni/com/chip/casting/TvCastingApp.java

@@ -140,7 +140,20 @@ public void discoverVideoPlayerCommissioners(
       }
 
       List<VideoPlayer> preCommissionedVideoPlayers = readCachedVideoPlayers();
-
+      if (preCommissionedVideoPlayers != null) {
+        for (VideoPlayer videoPlayer : preCommissionedVideoPlayers) {
+          Log.d(
+              TAG,
+              "preCommissionedVideoPlayer hostName: "
+                  + videoPlayer.getHostName()
+                  + " MACAddress: "
+                  + videoPlayer.getMACAddress()
+                  + " numIPs: "
+                  + videoPlayer.getNumIPs()
+                  + " IP Addresses: "
+                  + videoPlayer.getIpAddresses());
+        }
+      }
       WifiManager wifiManager =
           (WifiManager) applicationContext.getSystemService(Context.WIFI_SERVICE);
       multicastLock = wifiManager.createMulticastLock("multicastLock");

examples/tv-casting-app/tv-casting-common/include/CastingServer.h

@@ -446,6 +446,7 @@ class CastingServer : public AppDelegate
 
     static void VerifyOrEstablishConnectionTask(chip::System::Layer * aSystemLayer, void * context);
     CHIP_ERROR ReadMACAddress(TargetEndpointInfo * endpoint);
+    int GetCachedVideoPlayerIndex(TargetVideoPlayerInfo * targetVideoPlayerInfo);
 
     /**
      * @brief Retrieve the IP Address to use for the UDC request.

examples/tv-casting-app/tv-casting-common/src/CastingServer.cpp

@@ -481,6 +481,9 @@ CHIP_ERROR CastingServer::VerifyOrEstablishConnection(TargetVideoPlayerInfo & ta
     {
         return CHIP_ERROR_INVALID_ARGUMENT;
     }
+    int cacheIndex = GetCachedVideoPlayerIndex(&targetVideoPlayerInfo);
+    VerifyOrReturnError(cacheIndex >= 0, CHIP_ERROR_INVALID_ARGUMENT);
+
     mOnConnectionSuccessClientCallback = onConnectionSuccess;
     mOnConnectionFailureClientCallback = onConnectionFailure;
     mOnNewOrUpdatedEndpoint            = onNewOrUpdatedEndpoint;
@@ -493,12 +496,13 @@ CHIP_ERROR CastingServer::VerifyOrEstablishConnection(TargetVideoPlayerInfo & ta
         prevDeviceProxy->Disconnect();
     }
 
-    CastingServer::GetInstance()->mActiveTargetVideoPlayerInfo = targetVideoPlayerInfo;
+    CastingServer::GetInstance()->mActiveTargetVideoPlayerInfo = mCachedTargetVideoPlayerInfo[cacheIndex];
     uint32_t delay                                             = 0;
-    if (targetVideoPlayerInfo.IsAsleep())
+    if (CastingServer::GetInstance()->mActiveTargetVideoPlayerInfo.IsAsleep())
     {
         ChipLogProgress(AppServer, "CastingServer::VerifyOrEstablishConnection(): Sending WoL to sleeping VideoPlayer and waiting");
-        ReturnErrorOnFailure(CastingServer::GetInstance()->SendWakeOnLan(targetVideoPlayerInfo));
+        ReturnErrorOnFailure(
+            CastingServer::GetInstance()->SendWakeOnLan(CastingServer::GetInstance()->mActiveTargetVideoPlayerInfo));
 
 #ifdef CHIP_DEVICE_CONFIG_STR_WAKE_UP_DELAY_SEC
         delay = CHIP_DEVICE_CONFIG_STR_WAKE_UP_DELAY_SEC * 1000;
@@ -511,6 +515,21 @@ CHIP_ERROR CastingServer::VerifyOrEstablishConnection(TargetVideoPlayerInfo & ta
                                                        nullptr);
 }
 
+int CastingServer::GetCachedVideoPlayerIndex(TargetVideoPlayerInfo * targetVideoPlayerInfo)
+{
+    if (targetVideoPlayerInfo != nullptr)
+    {
+        for (size_t i = 0; i < kMaxCachedVideoPlayers && mCachedTargetVideoPlayerInfo[i].IsInitialized(); i++)
+        {
+            if (mCachedTargetVideoPlayerInfo[i] == *targetVideoPlayerInfo)
+            {
+                return static_cast<int>(i);
+            }
+        }
+    }
+    return -1;
+}
+
 void CastingServer::VerifyOrEstablishConnectionTask(chip::System::Layer * aSystemLayer, void * context)
 {
     ChipLogProgress(AppServer, "CastingServer::VerifyOrEstablishConnectionTask called");