From 8804952612609239040025330591356571302187 Mon Sep 17 00:00:00 2001
From: Glenn Smith <glenn@vector35.com>
Date: Wed, 31 May 2023 20:55:14 -0400
Subject: API to read raw undo buffer (for DHView)

---
 binaryninjaapi.h  |  1 +
 binaryninjacore.h |  1 +
 database.cpp      | 11 +++++++++++
 3 files changed, 13 insertions(+)

diff --git a/binaryninjaapi.h b/binaryninjaapi.h
index 5f4f6d16..63293812 100644
--- a/binaryninjaapi.h
+++ b/binaryninjaapi.h
@@ -1909,6 +1909,7 @@ namespace BinaryNinja {
 		std::vector<Ref<Snapshot>> GetChildren();
 		DataBuffer GetFileContents();
 		DataBuffer GetFileContentsHash();
+		DataBuffer GetUndoData();
 		std::vector<UndoEntry> GetUndoEntries();
 		std::vector<UndoEntry> GetUndoEntries(const std::function<bool(size_t, size_t)>& progress);
 		Ref<KeyValueStore> ReadData();
diff --git a/binaryninjacore.h b/binaryninjacore.h
index 210a4322..e1e9a830 100644
--- a/binaryninjacore.h
+++ b/binaryninjacore.h
@@ -3244,6 +3244,7 @@ extern "C"
 	BINARYNINJACOREAPI BNKeyValueStore* BNReadSnapshotData(BNSnapshot* snapshot);
 	BINARYNINJACOREAPI BNKeyValueStore* BNReadSnapshotDataWithProgress(
 	    BNSnapshot* snapshot, void* ctxt, bool (*progress)(void* ctxt, size_t progress, size_t total));
+	BINARYNINJACOREAPI BNDataBuffer* BNGetSnapshotUndoData(BNSnapshot* snapshot);
 	BINARYNINJACOREAPI BNUndoEntry* BNGetSnapshotUndoEntries(BNSnapshot* snapshot, size_t* count);
 	BINARYNINJACOREAPI BNUndoEntry* BNGetSnapshotUndoEntriesWithProgress(
 	    BNSnapshot* snapshot, void* ctxt, bool (*progress)(void* ctxt, size_t progress, size_t total), size_t* count);
diff --git a/database.cpp b/database.cpp
index 887cdea7..dd258967 100644
--- a/database.cpp
+++ b/database.cpp
@@ -276,6 +276,17 @@ DataBuffer Snapshot::GetFileContentsHash()
 }
 
 
+DataBuffer Snapshot::GetUndoData()
+{
+	BNDataBuffer* buffer = BNGetSnapshotUndoData(m_object);
+	if (buffer == nullptr)
+	{
+		throw DatabaseException("BNGetSnapshotUndoData");
+	}
+	return DataBuffer(buffer);
+}
+
+
 vector<UndoEntry> Snapshot::GetUndoEntries()
 {
 	return GetUndoEntries([](size_t, size_t) { return true; });
-- 
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