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3c754a0a89
shadowTls v2时客户端自动使用utls，且增强了探测防御 proxy.SetCommonReadTimeout -> netLayer.SetCommonReadTimeout tlsLayer 配置也使用Extra，目前用于 shadowTls
74 lines
1.3 KiB
Go
74 lines
1.3 KiB
Go
package utils
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import (
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"crypto/hmac"
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"crypto/sha1"
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"hash"
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"io"
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"runtime"
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)
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// 有些系统对aes支持不好，有些支持好。SystemAutoUseAes若为true，则说明支持很好，使用aes作为加密算法速度最佳。
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const SystemAutoUseAes = runtime.GOARCH == "amd64" || runtime.GOARCH == "s390x" || runtime.GOARCH == "arm64"
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type HashReader struct {
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io.Reader
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hmac hash.Hash
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}
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func NewHashReader(conn io.Reader, key []byte) *HashReader {
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return &HashReader{
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conn,
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hmac.New(sha1.New, key),
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}
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}
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func (c *HashReader) Read(b []byte) (n int, err error) {
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n, err = c.Reader.Read(b)
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if err != nil {
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return
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}
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_, err = c.hmac.Write(b[:n])
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return
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}
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func (c *HashReader) Sum() []byte {
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return c.hmac.Sum(nil)[:8]
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}
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type HashWriter struct {
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io.Writer
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hmac hash.Hash
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written bool
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}
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func NewHashWriter(conn io.Writer, key []byte) *HashWriter {
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return &HashWriter{
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Writer: conn,
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hmac: hmac.New(sha1.New, key),
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}
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}
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func (c *HashWriter) Write(p []byte) (n int, err error) {
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if c.hmac != nil {
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c.hmac.Write(p)
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c.written = true
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}
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return c.Writer.Write(p)
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}
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func (c *HashWriter) Sum() []byte {
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return c.hmac.Sum(nil)[:8]
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}
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func (c *HashWriter) StopHashing() {
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c.hmac = nil
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c.written = false
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}
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// Has the hash been written
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func (c *HashWriter) Written() bool {
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return c.written
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}
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