Merge "Fix mSession NULL dereference" am: 64a5e99011 am: e1391b7d67

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2487975

Change-Id: Ia711b468b89063ba95be2dae39f10dcb2026b95f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/drm/mediadrm/plugins/clearkey/aidl/CryptoPlugin.cpp b/drm/mediadrm/plugins/clearkey/aidl/CryptoPlugin.cpp
index afc9b6a..a63471f 100644
--- a/drm/mediadrm/plugins/clearkey/aidl/CryptoPlugin.cpp
+++ b/drm/mediadrm/plugins/clearkey/aidl/CryptoPlugin.cpp
@@ -137,6 +137,8 @@
         *_aidl_return = static_cast<ssize_t>(offset);
         return toNdkScopedAStatus(Status::OK);
     } else if (in_args.mode == Mode::AES_CTR) {
+        if (!mSession) return toNdkScopedAStatus(Status::ERROR_DRM_CANNOT_HANDLE,
+                    "session not found");
         size_t bytesDecrypted{};
         std::vector<int32_t> clearDataLengths;
         std::vector<int32_t> encryptedDataLengths;
@@ -149,6 +151,7 @@
             detailedError = "invalid decrypt parameter size";
             return toNdkScopedAStatus(Status::ERROR_DRM_CANNOT_HANDLE, detailedError);
         }
+
         auto res =
                 mSession->decrypt(in_args.keyId.data(), in_args.iv.data(),
                                   srcPtr, static_cast<uint8_t*>(destPtr),
diff --git a/drm/mediadrm/plugins/clearkey/hidl/CryptoPlugin.cpp b/drm/mediadrm/plugins/clearkey/hidl/CryptoPlugin.cpp
index 7bc320d..64a43b0 100644
--- a/drm/mediadrm/plugins/clearkey/hidl/CryptoPlugin.cpp
+++ b/drm/mediadrm/plugins/clearkey/hidl/CryptoPlugin.cpp
@@ -211,6 +211,10 @@
             _hidl_cb(Status_V1_2::ERROR_DRM_CANNOT_HANDLE, 0, "invalid decrypt parameter size");
             return Void();
         }
+        if (!mSession) {
+            _hidl_cb(Status_V1_2::ERROR_DRM_CANNOT_HANDLE, 0, "session not found");
+            return Void();
+        }
         Status_V1_2 res = mSession->decrypt(keyId.data(), iv.data(), srcPtr,
                 static_cast<uint8_t*>(destPtr), toVector(subSamples), &bytesDecrypted);
         if (res == Status_V1_2::OK) {