148 lines
3.0 KiB
Go
148 lines
3.0 KiB
Go
package lifecycle
|
|
|
|
import (
|
|
"errors"
|
|
"io"
|
|
"net"
|
|
"sync"
|
|
"time"
|
|
|
|
portUtil "tunnel_pls/internal/port"
|
|
"tunnel_pls/session/slug"
|
|
"tunnel_pls/types"
|
|
|
|
"golang.org/x/crypto/ssh"
|
|
)
|
|
|
|
type Forwarder interface {
|
|
Close() error
|
|
TunnelType() types.TunnelType
|
|
ForwardedPort() uint16
|
|
}
|
|
|
|
type SessionRegistry interface {
|
|
Remove(key types.SessionKey)
|
|
}
|
|
|
|
type lifecycle struct {
|
|
mu sync.Mutex
|
|
status types.SessionStatus
|
|
closeErr error
|
|
conn ssh.Conn
|
|
channel ssh.Channel
|
|
forwarder Forwarder
|
|
slug slug.Slug
|
|
startedAt time.Time
|
|
sessionRegistry SessionRegistry
|
|
portRegistry portUtil.Port
|
|
user string
|
|
}
|
|
|
|
func New(conn ssh.Conn, forwarder Forwarder, slugManager slug.Slug, port portUtil.Port, sessionRegistry SessionRegistry, user string) Lifecycle {
|
|
return &lifecycle{
|
|
status: types.SessionStatusINITIALIZING,
|
|
conn: conn,
|
|
channel: nil,
|
|
forwarder: forwarder,
|
|
slug: slugManager,
|
|
startedAt: time.Now(),
|
|
sessionRegistry: sessionRegistry,
|
|
portRegistry: port,
|
|
user: user,
|
|
}
|
|
}
|
|
|
|
type Lifecycle interface {
|
|
Connection() ssh.Conn
|
|
Channel() ssh.Channel
|
|
PortRegistry() portUtil.Port
|
|
User() string
|
|
SetChannel(channel ssh.Channel)
|
|
SetStatus(status types.SessionStatus)
|
|
IsActive() bool
|
|
StartedAt() time.Time
|
|
Close() error
|
|
}
|
|
|
|
func (l *lifecycle) PortRegistry() portUtil.Port {
|
|
return l.portRegistry
|
|
}
|
|
|
|
func (l *lifecycle) User() string {
|
|
return l.user
|
|
}
|
|
|
|
func (l *lifecycle) SetChannel(channel ssh.Channel) {
|
|
l.channel = channel
|
|
}
|
|
|
|
func (l *lifecycle) Channel() ssh.Channel {
|
|
return l.channel
|
|
}
|
|
|
|
func (l *lifecycle) Connection() ssh.Conn {
|
|
return l.conn
|
|
}
|
|
|
|
func (l *lifecycle) SetStatus(status types.SessionStatus) {
|
|
l.mu.Lock()
|
|
defer l.mu.Unlock()
|
|
l.status = status
|
|
}
|
|
|
|
func (l *lifecycle) IsActive() bool {
|
|
l.mu.Lock()
|
|
defer l.mu.Unlock()
|
|
return l.status == types.SessionStatusRUNNING
|
|
}
|
|
|
|
func (l *lifecycle) Close() error {
|
|
l.mu.Lock()
|
|
defer l.mu.Unlock()
|
|
if l.status == types.SessionStatusCLOSED {
|
|
return l.closeErr
|
|
}
|
|
l.status = types.SessionStatusCLOSED
|
|
|
|
var errs []error
|
|
tunnelType := l.forwarder.TunnelType()
|
|
|
|
if l.channel != nil {
|
|
if err := l.channel.Close(); err != nil && !isClosedError(err) {
|
|
errs = append(errs, err)
|
|
}
|
|
}
|
|
|
|
if l.conn != nil {
|
|
if err := l.conn.Close(); err != nil && !isClosedError(err) {
|
|
errs = append(errs, err)
|
|
}
|
|
}
|
|
|
|
clientSlug := l.slug.String()
|
|
key := types.SessionKey{
|
|
Id: clientSlug,
|
|
Type: tunnelType,
|
|
}
|
|
l.sessionRegistry.Remove(key)
|
|
|
|
if tunnelType == types.TunnelTypeTCP {
|
|
errs = append(errs, l.PortRegistry().SetStatus(l.forwarder.ForwardedPort(), false))
|
|
errs = append(errs, l.forwarder.Close())
|
|
}
|
|
|
|
l.closeErr = errors.Join(errs...)
|
|
return l.closeErr
|
|
}
|
|
|
|
func isClosedError(err error) bool {
|
|
if err == nil {
|
|
return false
|
|
}
|
|
return errors.Is(err, io.EOF) || errors.Is(err, net.ErrClosed) || err.Error() == "EOF"
|
|
}
|
|
|
|
func (l *lifecycle) StartedAt() time.Time {
|
|
return l.startedAt
|
|
}
|