feat: add TLS support

http/http.go

@@ -127,15 +127,19 @@ func handleRequest(conn net.Conn) {
 		return
 	}
 
-	if r.Host == utils.Getenv("domain") {
-		writer := &tcpResponseWriter{
-			conn:   conn,
-			header: make(http.Header),
-			status: http.StatusOK,
-		}
-		fmt.Println(r.Pattern)
-		router.ServeHTTP(writer, r)
+	writer := &tcpResponseWriter{
+		conn:   conn,
+		header: make(http.Header),
+		status: http.StatusOK,
+	}
 
+	if r.Host == utils.Getenv("domain") {
+		router.ServeHTTP(writer, r)
+		return
+	}
+
+	if utils.Getenv("tls_enabled") == "false" {
+		http.Redirect(writer, r, fmt.Sprintf("https://%s%s", r.Host, r.URL.RequestURI()), http.StatusFound)
 		return
 	}
 

http/https.go

@@ -0,0 +1,95 @@
+package httpServer
+
+import (
+	"bufio"
+	"crypto/tls"
+	"fmt"
+	"io"
+	"log"
+	"net"
+	"net/http"
+	"strings"
+	"tunnel_pls/session"
+	"tunnel_pls/utils"
+)
+
+func ListenTLS(config *tls.Config) {
+	server, err := tls.Listen("tcp", ":443", config)
+	if err != nil {
+		return
+	}
+
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
+
+	defer server.Close()
+	log.Println("Listening on :443")
+	for {
+		conn, err := server.Accept()
+		if err != nil {
+			log.Fatal(err)
+			return
+		}
+
+		go handleRequestTLS(conn)
+	}
+}
+
+func handleRequestTLS(conn net.Conn) {
+	defer conn.Close()
+	var rawRequest string
+
+	reader := bufio.NewReader(conn)
+	r, err := http.ReadRequest(reader)
+	if err != nil {
+		fmt.Println("Error reading request:", err)
+		return
+	}
+
+	writer := &tcpResponseWriter{
+		conn:   conn,
+		header: make(http.Header),
+		status: http.StatusOK,
+	}
+
+	if r.Host == utils.Getenv("domain") {
+		router.ServeHTTP(writer, r)
+		return
+	}
+
+	slug := strings.Split(r.Host, ".")[0]
+	if slug == "" {
+		fmt.Println("Error parsing slug: ", r.Host)
+		return
+	}
+
+	sshSession, ok := session.Clients[slug]
+	if !ok {
+		fmt.Println("Error finding ssh session: ", slug)
+		return
+	}
+
+	rawRequest += fmt.Sprintf("%s %s %s\r\n", r.Method, r.URL.RequestURI(), r.Proto)
+	rawRequest += fmt.Sprintf("Host: %s\r\n", r.Host)
+
+	for k, v := range r.Header {
+		rawRequest += fmt.Sprintf("%s: %s\r\n", k, v[0])
+	}
+	rawRequest += "\r\n"
+
+	if r.Body != nil {
+		body, err := io.ReadAll(r.Body)
+		if err != nil {
+			log.Println("Error reading request body:", err)
+		} else {
+			rawRequest += string(body)
+		}
+	}
+
+	payload := []byte(rawRequest)
+
+	host, originPort := session.ParseAddr(conn.RemoteAddr().String())
+	sshSession.GetForwardedConnection(conn, host, sshSession.Connection, payload, originPort, 80, r.RequestURI, r.Method, r.Proto)
+}

server/server.go

@@ -1,12 +1,14 @@
 package server
 
 import (
+	"crypto/tls"
 	"fmt"
 	"golang.org/x/crypto/ssh"
 	"log"
 	"net"
 	"net/http"
 	httpServer "tunnel_pls/http"
+	"tunnel_pls/utils"
 )
 
 type Server struct {
@@ -22,6 +24,15 @@ func NewServer(config ssh.ServerConfig) *Server {
 		return nil
 	}
 	go httpServer.Listen()
+	if utils.Getenv("tls_enabled") == "true" {
+		cert, err := tls.LoadX509KeyPair(utils.Getenv("cert_loc"), utils.Getenv("key_loc"))
+		if err != nil {
+			log.Fatal("Failed to load key pair:", err)
+		}
+
+		tlsConfig := &tls.Config{Certificates: []tls.Certificate{cert}}
+		go httpServer.ListenTLS(tlsConfig)
+	}
 	return &Server{
 		Conn:   &listener,
 		Config: &config,

session/handler.go

@@ -45,6 +45,7 @@ func (s *Session) handleGlobalRequest() {
 
 				if portToBind == 80 || portToBind == 443 {
 					s.TunnelType = HTTP
+					s.ForwardedPort = uint16(portToBind)
 					var slug string
 					for {
 						slug = utils.GenerateRandomString(32)
@@ -57,7 +58,11 @@ func (s *Session) handleGlobalRequest() {
 					buf := new(bytes.Buffer)
 					binary.Write(buf, binary.BigEndian, uint32(portToBind))
 					log.Printf("Forwarding approved on port: %d", portToBind)
-					s.ConnChannels[0].Write([]byte(fmt.Sprintf("Forwarding your traffic to http://%s.%s \r\n", slug, utils.Getenv("domain"))))
+					if utils.Getenv("tls_enabled") == "true" {
+						s.ConnChannels[0].Write([]byte(fmt.Sprintf("Forwarding your traffic to https://%s.%s \r\n", slug, utils.Getenv("domain"))))
+					} else {
+						s.ConnChannels[0].Write([]byte(fmt.Sprintf("Forwarding your traffic to http://%s.%s \r\n", slug, utils.Getenv("domain"))))
+					}
 					req.Reply(true, buf.Bytes())
 				} else {
 					s.TunnelType = TCP

session/session.go

@@ -12,6 +12,7 @@ type Session struct {
 	GlobalRequest <-chan *ssh.Request
 	Listener      net.Listener
 	TunnelType    TunnelType
+	ForwardedPort uint16
 	Done          chan bool
 }