diff options
| -rw-r--r-- | dom/indexedDB/ActorsParent.cpp | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/dom/indexedDB/ActorsParent.cpp b/dom/indexedDB/ActorsParent.cpp index a3dc710ed..58c113058 100644 --- a/dom/indexedDB/ActorsParent.cpp +++ b/dom/indexedDB/ActorsParent.cpp @@ -23,6 +23,7 @@ #include "mozilla/AppProcessChecker.h" #include "mozilla/AutoRestore.h" #include "mozilla/Casting.h" +#include "mozilla/CheckedInt.h" #include "mozilla/EndianUtils.h" #include "mozilla/ErrorNames.h" #include "mozilla/LazyIdleThread.h" @@ -782,29 +783,25 @@ MakeCompressedIndexDataValues( MOZ_ASSERT(!keyBuffer.IsEmpty()); - // Don't let |infoLength| overflow. - if (NS_WARN_IF(UINT32_MAX - keyBuffer.Length() < - CompressedByteCountForIndexId(info.mIndexId) + - CompressedByteCountForNumber(keyBufferLength) + - CompressedByteCountForNumber(sortKeyBufferLength))) { - IDB_REPORT_INTERNAL_ERR(); - return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR; - } - - const uint32_t infoLength = - CompressedByteCountForIndexId(info.mIndexId) + + const CheckedUint32 infoLength = + CheckedUint32(CompressedByteCountForIndexId(info.mIndexId)) + CompressedByteCountForNumber(keyBufferLength) + CompressedByteCountForNumber(sortKeyBufferLength) + keyBufferLength + sortKeyBufferLength; + // Don't let |infoLength| overflow. + if (NS_WARN_IF(!infoLength.isValid())) { + IDB_REPORT_INTERNAL_ERR(); + return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR; + } // Don't let |blobDataLength| overflow. - if (NS_WARN_IF(UINT32_MAX - infoLength < blobDataLength)) { + if (NS_WARN_IF(UINT32_MAX - infoLength.value() < blobDataLength)) { IDB_REPORT_INTERNAL_ERR(); return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR; } - blobDataLength += infoLength; + blobDataLength += infoLength.value(); } UniqueFreePtr<uint8_t> blobData( |