diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/zstd/framedec.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/zstd/framedec.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/vendor/github.com/klauspost/compress/zstd/framedec.go b/vendor/github.com/klauspost/compress/zstd/framedec.go index 11089d223..509d5cece 100644 --- a/vendor/github.com/klauspost/compress/zstd/framedec.go +++ b/vendor/github.com/klauspost/compress/zstd/framedec.go @@ -326,6 +326,19 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) { d.history.ignoreBuffer = len(dst) // Store input length, so we only check new data. crcStart := len(dst) + d.history.decoders.maxSyncLen = 0 + if d.FrameContentSize != fcsUnknown { + d.history.decoders.maxSyncLen = d.FrameContentSize + uint64(len(dst)) + if d.history.decoders.maxSyncLen > d.o.maxDecodedSize { + return dst, ErrDecoderSizeExceeded + } + if uint64(cap(dst)) < d.history.decoders.maxSyncLen { + // Alloc for output + dst2 := make([]byte, len(dst), d.history.decoders.maxSyncLen+compressedBlockOverAlloc) + copy(dst2, dst) + dst = dst2 + } + } var err error for { err = dec.reset(d.rawInput, d.WindowSize) |