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Fix vision padding overflow

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世界 2023-03-19 10:25:26 +08:00
parent 0558b3fc5c
commit 46040a71c3
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GPG key ID: CD109927C34A63C4
1 changed files with 13 additions and 4 deletions
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17
transport/vless/vision.go
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@ -286,14 +286,23 @@ func (c *VisionConn) padding(buffer *buf.Buffer, command byte) *buf.Buffer {
l, _ := rand.Int(rand.Reader, big.NewInt(256)) l, _ := rand.Int(rand.Reader, big.NewInt(256))
paddingLen = int(l.Int64()) paddingLen = int(l.Int64())
} }
newBuffer := buf.New() var bufferLen int
if c.writeUUID { if c.writeUUID {
newBuffer.Write(c.userUUID[:]) bufferLen += 16
}
bufferLen += 5
if buffer != nil {
bufferLen += buffer.Len()
}
bufferLen += paddingLen
newBuffer := buf.NewSize(bufferLen)
if c.writeUUID {
common.Must1(newBuffer.Write(c.userUUID[:]))
c.writeUUID = false c.writeUUID = false
} }
newBuffer.Write([]byte{command, byte(contentLen >> 8), byte(contentLen), byte(paddingLen >> 8), byte(paddingLen)}) common.Must1(newBuffer.Write([]byte{command, byte(contentLen >> 8), byte(contentLen), byte(paddingLen >> 8), byte(paddingLen)}))
if buffer != nil { if buffer != nil {
newBuffer.Write(buffer.Bytes()) common.Must1(newBuffer.Write(buffer.Bytes()))
buffer.Release() buffer.Release()
} }
newBuffer.Extend(paddingLen) newBuffer.Extend(paddingLen)