vacp2p
/
nim-libp2p-experimental
mirror of https://github.com/vacp2p/nim-libp2p-experimental.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

avoid buffer overflow on BE/LE conversions

This commit is contained in:
Dmitriy Ryajov 2019-10-29 10:10:19 -06:00
parent cc0d45c482
commit 541f0f2a41
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libp2p/protobuf/minprotobuf.nim
View File

@ -199,11 +199,11 @@ proc finish*(pb: var ProtoBuffer) =
pb.buffer[0] = byte(size shr 24)
pb.buffer[1] = byte(size shr 16)
pb.buffer[2] = byte(size shr 8)
pb.buffer[3] = byte(size)
pb.buffer[3] = byte(size and 0xFF)
pb.offset = 4
elif WithUint32LeLength in pb.options:
let size = uint(len(pb.buffer) - 4)
pb.buffer[0] = byte(size)
pb.buffer[0] = byte(size and 0xFF)
pb.buffer[1] = byte(size shr 8)
pb.buffer[2] = byte(size shr 16)
pb.buffer[3] = byte(size shr 24)