mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-08-04 03:24:41 -04:00
40 lines
768 B
Go
40 lines
768 B
Go
package io
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import (
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"hash/fnv"
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"github.com/v2ray/v2ray-core/common/alloc"
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v2io "github.com/v2ray/v2ray-core/common/io"
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"github.com/v2ray/v2ray-core/common/serial"
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)
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type AuthChunkWriter struct {
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writer v2io.Writer
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}
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func NewAuthChunkWriter(writer v2io.Writer) *AuthChunkWriter {
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return &AuthChunkWriter{
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writer: writer,
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}
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}
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func (this *AuthChunkWriter) Write(buffer *alloc.Buffer) error {
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Authenticate(buffer)
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return this.writer.Write(buffer)
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}
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func (this *AuthChunkWriter) Release() {
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this.writer.Release()
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this.writer = nil
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}
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func Authenticate(buffer *alloc.Buffer) {
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fnvHash := fnv.New32a()
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fnvHash.Write(buffer.Value)
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buffer.SliceBack(4)
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fnvHash.Sum(buffer.Value[:0])
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buffer.Prepend(serial.Uint16Literal(uint16(buffer.Len())).Bytes())
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}
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