git_clone/thorvg
1
0
Fork 0
mirror of https://github.com/thorvg/thorvg.git synced 2025-06-08 13:43:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

tvg_loader: make sure the pointer does not exceed the size

Browse source
This commit is contained in:
Michal Maciola 2021-08-24 14:59:54 +02:00 • committed by Hermet Park
parent d599f744c8
commit fe474856b9
2 changed files with 5 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
src/lib/tvgBinaryDesc.h
View file

@ -35,6 +35,7 @@ using TvgBinFlag = TvgBinByte;
//Header
#define TVG_HEADER_SIZE 33 //TVG_HEADER_SIGNATURE_LENGTH + TVG_HEADER_VERSION_LENGTH + 2*SIZE(float) + TVG_HEADER_RESERVED_LENGTH + TVG_HEADER_COMPRESS_SIZE
#define TVG_HEADER_SIGNATURE "ThorVG"
#define TVG_HEADER_SIGNATURE_LENGTH 6
#define TVG_HEADER_VERSION "000400" //Major 00, Minor 04, Micro 00

5
src/loaders/tvg/tvgTvgLoader.cpp
View file

@ -50,6 +50,9 @@ bool TvgLoader::readHeader()
{
if (!ptr) return false;
//Make sure the size is large enough to hold the header
if (size < TVG_HEADER_SIZE) return false;
//1. Signature
if (memcmp(ptr, TVG_HEADER_SIGNATURE, TVG_HEADER_SIGNATURE_LENGTH)) return false;
ptr += TVG_HEADER_SIGNATURE_LENGTH;
@ -225,4 +228,4 @@ unique_ptr<Paint> TvgLoader::paint()
this->done();
if (root) return move(root);
return nullptr;
}
}