mirror of https://github.com/ehang-io/nps
67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package conn
|
|
|
|
import (
|
|
"github.com/cnlh/nps/lib/crypt"
|
|
"github.com/cnlh/nps/lib/rate"
|
|
"net"
|
|
)
|
|
|
|
type CryptConn struct {
|
|
conn net.Conn
|
|
crypt bool
|
|
rate *rate.Rate
|
|
}
|
|
|
|
func NewCryptConn(conn net.Conn, crypt bool, rate *rate.Rate) *CryptConn {
|
|
c := new(CryptConn)
|
|
c.conn = conn
|
|
c.crypt = crypt
|
|
c.rate = rate
|
|
return c
|
|
}
|
|
|
|
//加密写
|
|
func (s *CryptConn) Write(b []byte) (n int, err error) {
|
|
n = len(b)
|
|
if s.crypt {
|
|
if b, err = crypt.AesEncrypt(b, []byte(cryptKey)); err != nil {
|
|
return
|
|
}
|
|
}
|
|
if b, err = GetLenBytes(b); err != nil {
|
|
return
|
|
}
|
|
_, err = s.conn.Write(b)
|
|
if s.rate != nil {
|
|
s.rate.Get(int64(n))
|
|
}
|
|
return
|
|
}
|
|
|
|
//解密读
|
|
func (s *CryptConn) Read(b []byte) (n int, err error) {
|
|
var lens int
|
|
var buf []byte
|
|
var rb []byte
|
|
c := NewConn(s.conn)
|
|
if lens, err = c.GetLen(); err != nil {
|
|
return
|
|
}
|
|
if buf, err = c.ReadLen(lens); err != nil {
|
|
return
|
|
}
|
|
if s.crypt {
|
|
if rb, err = crypt.AesDecrypt(buf, []byte(cryptKey)); err != nil {
|
|
return
|
|
}
|
|
} else {
|
|
rb = buf
|
|
}
|
|
copy(b, rb)
|
|
n = len(rb)
|
|
if s.rate != nil {
|
|
s.rate.Get(int64(n))
|
|
}
|
|
return
|
|
}
|