1 files changed, 41 insertions, 1 deletions
diff --git a/lib/e2ee/qolmutils.h b/lib/e2ee/qolmutils.h
index f218e628..17eee7a3 100644
--- a/lib/e2ee/qolmutils.h
+++ b/lib/e2ee/qolmutils.h
@@ -9,7 +9,47 @@
 #include "e2ee/e2ee.h"
 
 namespace Quotient {
+
 // Convert PicklingMode to key
 QUOTIENT_API QByteArray toKey(const PicklingMode &mode);
-QUOTIENT_API QByteArray getRandom(size_t bufferSize);
+
+class QUOTIENT_API RandomBuffer : public QByteArray {
+public:
+    explicit RandomBuffer(size_t size);
+    ~RandomBuffer() { clear(); }
+
+    // NOLINTNEXTLINE(google-explicit-constructor)
+    QUO_IMPLICIT operator void*() { return data(); }
+    char* chars() { return data(); }
+    uint8_t* bytes() { return reinterpret_cast<uint8_t*>(data()); }
+
+    Q_DISABLE_COPY(RandomBuffer)
+    RandomBuffer(RandomBuffer&&) = default;
+    void operator=(RandomBuffer&&) = delete;
+};
+
+[[deprecated("Create RandomBuffer directly")]] inline auto getRandom(
+    size_t bufferSize)
+{
+    return RandomBuffer(bufferSize);
 }
+
+#define QOLM_INTERNAL_ERROR_X(Message_, LastError_) \
+    qFatal("%s, internal error: %s", Message_, LastError_)
+
+#define QOLM_INTERNAL_ERROR(Message_) \
+    QOLM_INTERNAL_ERROR_X(Message_, lastError())
+
+#define QOLM_FAIL_OR_LOG_X(InternalCondition_, Message_, LastErrorText_)   \
+    do {                                                                   \
+        const QString errorMsg{ (Message_) };                              \
+        if (InternalCondition_)                                            \
+            QOLM_INTERNAL_ERROR_X(qPrintable(errorMsg), (LastErrorText_)); \
+        qWarning(E2EE).nospace() << errorMsg << ": " << (LastErrorText_);  \
+    } while (false) /* End of macro */
+
+#define QOLM_FAIL_OR_LOG(InternalFailureValue_, Message_)                      \
+    QOLM_FAIL_OR_LOG_X(lastErrorCode() == (InternalFailureValue_), (Message_), \
+                       lastError())
+
+} // namespace Quotient