bagas
1e12373359
- Reorganize internal packages and overall project structure - Update imports and wiring to match the new layout - Separate HTTP parsing and streaming from the server package - Separate middleware from the server package - Separate session registry from the session package - Move HTTP, HTTPS, and TCP servers to the transport package - Session package no longer starts the TCP server directly - Server package no longer starts HTTP/HTTPS servers on initialization - Forwarder no longer handles accepting TCP requests - Move session details to the types package - HTTP/HTTPS initialization is now the responsibility of main
103 lines
2.3 KiB
Go
103 lines
2.3 KiB
Go
package server
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"net"
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"time"
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"tunnel_pls/internal/grpc/client"
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"tunnel_pls/internal/port"
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"tunnel_pls/internal/registry"
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"tunnel_pls/session"
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"golang.org/x/crypto/ssh"
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)
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type Server interface {
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Start()
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Close() error
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}
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type server struct {
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sshPort string
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sshListener net.Listener
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config *ssh.ServerConfig
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grpcClient client.Client
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sessionRegistry registry.Registry
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portRegistry port.Port
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}
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func New(sshConfig *ssh.ServerConfig, sessionRegistry registry.Registry, grpcClient client.Client, portRegistry port.Port, sshPort string) (Server, error) {
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listener, err := net.Listen("tcp", fmt.Sprintf(":%s", sshPort))
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if err != nil {
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return nil, err
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}
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return &server{
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sshPort: sshPort,
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sshListener: listener,
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config: sshConfig,
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grpcClient: grpcClient,
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sessionRegistry: sessionRegistry,
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portRegistry: portRegistry,
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}, nil
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}
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func (s *server) Start() {
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log.Printf("SSH server is starting on port %s", s.sshPort)
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for {
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conn, err := s.sshListener.Accept()
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if err != nil {
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if errors.Is(err, net.ErrClosed) {
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log.Println("listener closed, stopping server")
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return
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}
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log.Printf("failed to accept connection: %v", err)
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continue
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}
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go s.handleConnection(conn)
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}
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}
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func (s *server) Close() error {
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return s.sshListener.Close()
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}
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func (s *server) handleConnection(conn net.Conn) {
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sshConn, chans, forwardingReqs, err := ssh.NewServerConn(conn, s.config)
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if err != nil {
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log.Printf("failed to establish SSH connection: %v", err)
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err = conn.Close()
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if err != nil {
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log.Printf("failed to close SSH connection: %v", err)
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return
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}
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return
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}
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defer func(sshConn *ssh.ServerConn) {
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err = sshConn.Close()
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if err != nil && !errors.Is(err, net.ErrClosed) {
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log.Printf("failed to close SSH server: %v", err)
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}
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}(sshConn)
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user := "UNAUTHORIZED"
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if s.grpcClient != nil {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
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_, u, _ := s.grpcClient.AuthorizeConn(ctx, sshConn.User())
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user = u
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cancel()
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}
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log.Println("SSH connection established:", sshConn.User())
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sshSession := session.New(sshConn, forwardingReqs, chans, s.sessionRegistry, s.portRegistry, user)
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err = sshSession.Start()
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if err != nil {
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log.Printf("SSH session ended with error: %v", err)
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return
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}
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return
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}
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