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add client hello chunks

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This commit is contained in:
xvzc 2022-01-03 17:12:51 +09:00
parent b54d28c5a7
commit b58ec8d6c4
2 changed files with 47 additions and 9 deletions
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42
proxy/https.go
View File

@ -2,11 +2,12 @@ package proxy
import (
"fmt"
"io"
"net"
"io"
// "time"
"github.com/xvzc/SpoofDPI/config"
"github.com/xvzc/SpoofDPI/util"
)
@ -16,15 +17,11 @@ func HandleHttps(clientConn net.Conn, ip string) {
util.Debug(err)
return
}
defer clientConn.Close()
defer remoteConn.Close()
util.Debug("Connected to the server.")
util.Debug("Sending 200 Connection Estabalished")
fmt.Fprintf(clientConn, "HTTP/1.1 200 Connection Established\r\n\r\n")
go func() {
for {
buf, err := util.ReadMessage(remoteConn)
@ -39,7 +36,7 @@ func HandleHttps(clientConn net.Conn, ip string) {
return
}
util.Debug(remoteConn.RemoteAddr(), "Server Sent Data", len(buf))
util.Debug(remoteConn.RemoteAddr(), "Server sent data", len(buf))
_, write_err := clientConn.Write(buf)
if write_err != nil {
@ -49,8 +46,35 @@ func HandleHttps(clientConn net.Conn, ip string) {
}
}()
util.Debug("Sending 200 Connection Estabalished")
fmt.Fprintf(clientConn, "HTTP/1.1 200 Connection Established\r\n\r\n")
clientHello, err := util.ReadMessage(clientConn)
if err != nil {
if err != io.EOF {
util.Debug("Error reading from the client:", err)
} else {
util.Debug("Client connection Closed: ", err)
}
util.Debug("Closing connection: ", clientConn.RemoteAddr())
}
util.Debug(clientConn.RemoteAddr(), "Client sent hello", len(clientHello))
chunks, err := util.SplitSliceInChunks(clientHello, config.GetConfig().MTU)
if err != nil {
util.Debug("Error chunking client hello: ", err)
}
for i := 0; i < len(chunks); i++ {
_, write_err := remoteConn.Write(chunks[i])
if write_err != nil {
util.Debug("Error writing to client:", write_err)
break
}
}
for {
defer clientConn.Close()
buf, err := util.ReadMessage(clientConn)
if err != nil {
if err != io.EOF {
@ -62,7 +86,7 @@ func HandleHttps(clientConn net.Conn, ip string) {
util.Debug("Closing connection: ", clientConn.RemoteAddr())
break
}
util.Debug(clientConn.RemoteAddr(), "Client Sent Data", len(buf))
util.Debug(clientConn.RemoteAddr(), "Client sent data", len(buf))
_, write_err := remoteConn.Write(buf)
if write_err != nil {

14
util/util.go
View File

@ -4,6 +4,7 @@ import (
"log"
"net"
"strings"
"errors"
"github.com/babolivier/go-doh-client"
"github.com/xvzc/SpoofDPI/config"
@ -108,6 +109,19 @@ func ExtractMethod(message *[]byte) (string) {
return strings.ToUpper(method)
}
func SplitSliceInChunks(a []byte, size int) ([][]byte, error) {
if size < 1 {
return nil, errors.New("chuckSize must be greater than zero")
}
chunks := make([][]byte, 0, (len(a)+size-1)/size)
for size < len(a) {
a, chunks = a[size:], append(chunks, a[0:size:size])
}
chunks = append(chunks, a)
return chunks, nil
}
func Debug(v ...interface{}) {
if config.GetConfig().Debug == false {
return