119 lines
2.5 KiB
Go
119 lines
2.5 KiB
Go
package lifecycle
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import (
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"errors"
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"io"
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"net"
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"time"
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portUtil "tunnel_pls/internal/port"
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"tunnel_pls/session/slug"
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"tunnel_pls/types"
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"golang.org/x/crypto/ssh"
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)
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type Forwarder interface {
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Close() error
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GetTunnelType() types.TunnelType
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GetForwardedPort() uint16
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}
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type Lifecycle struct {
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status types.Status
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conn ssh.Conn
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channel ssh.Channel
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forwarder Forwarder
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slugManager slug.Manager
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unregisterClient func(key types.SessionKey)
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startedAt time.Time
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}
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func NewLifecycle(conn ssh.Conn, forwarder Forwarder, slugManager slug.Manager) *Lifecycle {
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return &Lifecycle{
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status: types.INITIALIZING,
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conn: conn,
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channel: nil,
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forwarder: forwarder,
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slugManager: slugManager,
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unregisterClient: nil,
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startedAt: time.Now(),
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}
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}
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func (l *Lifecycle) SetUnregisterClient(unregisterClient func(key types.SessionKey)) {
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l.unregisterClient = unregisterClient
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}
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type SessionLifecycle interface {
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Close() error
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SetStatus(status types.Status)
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GetConnection() ssh.Conn
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GetChannel() ssh.Channel
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SetChannel(channel ssh.Channel)
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SetUnregisterClient(unregisterClient func(key types.SessionKey))
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IsActive() bool
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StartedAt() time.Time
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}
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func (l *Lifecycle) GetChannel() ssh.Channel {
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return l.channel
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}
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func (l *Lifecycle) SetChannel(channel ssh.Channel) {
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l.channel = channel
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}
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func (l *Lifecycle) GetConnection() ssh.Conn {
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return l.conn
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}
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func (l *Lifecycle) SetStatus(status types.Status) {
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l.status = status
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if status == types.RUNNING && l.startedAt.IsZero() {
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l.startedAt = time.Now()
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}
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}
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func (l *Lifecycle) Close() error {
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err := l.forwarder.Close()
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if err != nil && !errors.Is(err, net.ErrClosed) {
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return err
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}
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if l.channel != nil {
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err := l.channel.Close()
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if err != nil && !errors.Is(err, io.EOF) {
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return err
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}
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}
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if l.conn != nil {
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err := l.conn.Close()
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if err != nil && !errors.Is(err, net.ErrClosed) {
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return err
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}
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}
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clientSlug := l.slugManager.Get()
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if clientSlug != "" && l.unregisterClient != nil {
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key := types.SessionKey{Id: clientSlug, Type: l.forwarder.GetTunnelType()}
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l.unregisterClient(key)
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}
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if l.forwarder.GetTunnelType() == types.TCP {
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err := portUtil.Default.SetPortStatus(l.forwarder.GetForwardedPort(), false)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (l *Lifecycle) IsActive() bool {
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return l.status == types.RUNNING
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}
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func (l *Lifecycle) StartedAt() time.Time {
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return l.startedAt
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}
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