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fix shadowsocks ota

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Darien Raymond 2016-11-19 10:57:00 +01:00
parent 5a32cd8602
commit 26aa48d4f9
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1 changed files with 5 additions and 0 deletions
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5
proxy/shadowsocks/ota.go
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@ -81,6 +81,11 @@ func (this *ChunkReader) Read() (*alloc.Buffer, error) {
// There is a potential buffer overflow here. Large buffer is 64K bytes,
// while uin16 + 10 will be more than that
length := serial.BytesToUint16(buffer.Value[:2]) + AuthSize
if length > alloc.BufferSize {
// Theoretically the size of a chunk is 64K, but most Shadowsocks implementations used <4K buffer.
buffer.Release()
buffer = alloc.NewLocalBuffer(int(length) + 128)
}
if _, err := io.ReadFull(this.reader, buffer.Value[:length]); err != nil {
buffer.Release()
return nil, err