refactor, initial work for ssh driver (still wip)

cmd/root.go

@@ -36,7 +36,6 @@ var rootCmd = &cobra.Command{
 		for id, item := range docker.Default.Containers() {
 			err := server.DefaultManager.ProcessEvent(dto.Event{
 				Type:      dto.EventStart,
-				ID:        id,
 				Container: item,
 			})
 			if err != nil {
@@ -54,7 +53,8 @@ var rootCmd = &cobra.Command{
 			for event := range events {
 				err := server.DefaultManager.ProcessEvent(event)
 				if err != nil {
-					logger.Sugar.Errorw("cannot expose container", "id", event.ID, "error", err)
+					logger.Sugar.Errorw("cannot expose container",
+						"id", event.Container.ID, "error", err)
 				}
 			}
 		}()

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/docker/docker v24.0.7+incompatible
 	github.com/docker/go-connections v0.4.0
 	github.com/go-playground/validator/v10 v10.16.0
+	github.com/kevinburke/ssh_config v1.2.0
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/spf13/cast v1.5.1
 	github.com/spf13/cobra v1.8.0

go.sum

@@ -162,6 +162,8 @@ github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
+github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=
+github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=

internal/api/server.go

@@ -10,7 +10,7 @@ import (
 	"github.com/Neur0toxine/sshpoke/internal/logger"
 	"github.com/Neur0toxine/sshpoke/internal/server"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/plugin"
-	"github.com/Neur0toxine/sshpoke/pkg/dto"
+	"github.com/Neur0toxine/sshpoke/pkg/convert"
 	plugin2 "github.com/Neur0toxine/sshpoke/pkg/plugin"
 	"github.com/Neur0toxine/sshpoke/pkg/plugin/pb"
 	"google.golang.org/grpc"
@@ -44,10 +44,7 @@ func (p *pluginAPI) EventStatus(ctx context.Context, msg *pb.EventStatusMessage)
 	if pl == nil {
 		return nil, ErrUnauthorized
 	}
-	pl.HandleStatus(dto.EventStatus{
+	pl.PushEventStatus(convert.MessageToAppEventStatus(msg))
-		ID:    msg.Id,
-		Error: msg.Error,
-	})
 	return &emptypb.Empty{}, nil
 }
 

internal/docker/api.go

@@ -50,6 +50,21 @@ func (d *Docker) Containers() map[string]dto.Container {
 	return containers
 }
 
+func (d *Docker) GetContainer(id string) (dto.Container, bool) {
+	container, err := d.cli.ContainerList(d.ctx, types.ContainerListOptions{
+		Filters: filters.NewArgs(filters.Arg("id", id)),
+		All:     true,
+	})
+	if err != nil || len(container) != 1 {
+		return dto.Container{}, false
+	}
+	converted, ok := dockerContainerToInternal(container[0])
+	if !ok {
+		return dto.Container{}, false
+	}
+	return converted, true
+}
+
 func (d *Docker) Listen() (chan dto.Event, error) {
 	cli, err := client.NewClientWithOpts(config.Default.Docker.Opts)
 	if err != nil {
@@ -83,7 +98,6 @@ func (d *Docker) Listen() (chan dto.Event, error) {
 				}
 				newEvent := dto.Event{
 					Type:      eventType,
-					ID:        event.Actor.ID,
 					Container: converted,
 				}
 				msg := "exposing container"

internal/docker/convert.go

@@ -77,6 +77,8 @@ func dockerContainerToInternal(container types.Container) (result dto.Container,
 	}
 
 	return dto.Container{
+		ID:     container.ID,
+		Names:  container.Names,
 		IP:     ip,
 		Port:   uint16(port),
 		Server: labels.Server,

internal/server/container_list.go

@@ -0,0 +1,30 @@
+package server
+
+import (
+	"encoding/json"
+
+	"github.com/Neur0toxine/sshpoke/pkg/dto"
+)
+
+type Connections map[string]dto.Container
+
+func (c Connections) MarshalJSON() ([]byte, error) {
+	items := []dto.Container{}
+	for _, item := range c {
+		items = append(items, item)
+	}
+	return json.Marshal(items)
+}
+
+func (c *Connections) UnmarshalJSON(data []byte) error {
+	var items []dto.Container
+	if err := json.Unmarshal(data, &items); err != nil {
+		return err
+	}
+	m := make(map[string]dto.Container, len(items))
+	for _, item := range items {
+		m[item.ID] = item
+	}
+	*c = m
+	return nil
+}

internal/server/driver/base/base.go

@@ -0,0 +1,46 @@
+package base
+
+import (
+	"context"
+
+	"github.com/Neur0toxine/sshpoke/internal/logger"
+	"github.com/Neur0toxine/sshpoke/pkg/dto"
+	"go.uber.org/zap"
+)
+
+type Base struct {
+	ctx           context.Context
+	name          string
+	log           *zap.SugaredLogger
+	eventStatusCb EventStatusCallback
+}
+
+func New(ctx context.Context, name string) Base {
+	return Base{
+		ctx:  ctx,
+		name: name,
+		log:  logger.Default.With(zap.String("serverName", name)).Sugar(),
+	}
+}
+
+func (b *Base) SetEventStatusCallback(callback EventStatusCallback) {
+	b.eventStatusCb = callback
+}
+
+func (b *Base) PushEventStatus(status dto.EventStatus) {
+	if b.eventStatusCb != nil {
+		b.eventStatusCb(status)
+	}
+}
+
+func (b *Base) Context() context.Context {
+	return b.ctx
+}
+
+func (b *Base) Name() string {
+	return b.name
+}
+
+func (b *Base) Log() *zap.SugaredLogger {
+	return b.log
+}

internal/server/driver/base/iface.go

@@ -1,17 +1,22 @@
-package iface
+package base
 
 import (
 	"context"
 
 	"github.com/Neur0toxine/sshpoke/internal/config"
 	"github.com/Neur0toxine/sshpoke/pkg/dto"
+	"go.uber.org/zap"
 )
 
 type DriverConstructor func(ctx context.Context, name string, params config.DriverParams) (Driver, error)
+type EventStatusCallback func(status dto.EventStatus)
 
 type Driver interface {
 	Name() string
+	SetEventStatusCallback(callback EventStatusCallback)
+	PushEventStatus(status dto.EventStatus)
 	Handle(event dto.Event) error
 	Driver() config.DriverType
+	Log() *zap.SugaredLogger
 	WaitForShutdown()
 }

internal/server/driver/construct.go

@@ -4,13 +4,13 @@ import (
 	"context"
 
 	"github.com/Neur0toxine/sshpoke/internal/config"
-	"github.com/Neur0toxine/sshpoke/internal/server/driver/iface"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/base"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/null"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/plugin"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/ssh"
 )
 
-func New(ctx context.Context, name string, driver config.DriverType, params config.DriverParams) (iface.Driver, error) {
+func New(ctx context.Context, name string, driver config.DriverType, params config.DriverParams) (base.Driver, error) {
 	switch driver {
 	case config.DriverSSH:
 		return ssh.New(ctx, name, params)

internal/server/driver/null/driver.go

@@ -4,30 +4,40 @@ import (
 	"context"
 
 	"github.com/Neur0toxine/sshpoke/internal/config"
-	"github.com/Neur0toxine/sshpoke/internal/logger"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/base"
-	"github.com/Neur0toxine/sshpoke/internal/server/driver/iface"
 	"github.com/Neur0toxine/sshpoke/pkg/dto"
 )
 
 // Null driver only logs container events to debug log. It is used when user provides invalid driver type.
 // You can use it directly, but it won't do anything, so... why bother?
 type Null struct {
-	name string
+	base.Base
 }
 
-func New(ctx context.Context, name string, params config.DriverParams) (iface.Driver, error) {
+func New(ctx context.Context, name string, params config.DriverParams) (base.Driver, error) {
-	return &Null{name: name}, nil
+	return &Null{
+		Base: base.New(ctx, name),
+	}, nil
 }
 
 func (d *Null) Handle(event dto.Event) error {
-	logger.Sugar.Debugw("handling event with null driver", "serverName", d.name, "event", event)
+	d.Log().Debugw("handling event with null driver", "serverName", d.Name(), "event", event)
+	switch event.Type {
+	case dto.EventStart:
+		d.PushEventStatus(dto.EventStatus{
+			Type:   dto.EventStart,
+			ID:     event.Container.ID,
+			Domain: "https://" + event.Container.ID + "null.dev",
+		})
+	case dto.EventStop, dto.EventShutdown:
+		d.PushEventStatus(dto.EventStatus{
+			Type: event.Type,
+			ID:   event.Container.ID,
+		})
+	}
 	return nil
 }
 
-func (d *Null) Name() string {
-	return d.name
-}
-
 func (d *Null) Driver() config.DriverType {
 	return config.DriverNull
 }

internal/server/driver/plugin/driver.go

@@ -7,8 +7,7 @@ import (
 	"sync/atomic"
 
 	"github.com/Neur0toxine/sshpoke/internal/config"
-	"github.com/Neur0toxine/sshpoke/internal/logger"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/base"
-	"github.com/Neur0toxine/sshpoke/internal/server/driver/iface"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/util"
 	"github.com/Neur0toxine/sshpoke/pkg/dto"
 )
@@ -17,8 +16,7 @@ var ErrAlreadyConnected = errors.New("already connected")
 
 // Driver plugin uses RPC to communicate with external plugin.
 type Driver struct {
-	ctx       context.Context
+	base.Base
-	name      string
 	params    Params
 	send      *Queue[dto.Event]
 	listening atomic.Bool
@@ -29,16 +27,14 @@ type EventStream interface {
 }
 
 type Plugin interface {
-	iface.Driver
+	base.Driver
 	Token() string
 	Listen(ctx context.Context, stream EventStream) error
-	HandleStatus(event dto.EventStatus)
 }
 
-func New(ctx context.Context, name string, params config.DriverParams) (iface.Driver, error) {
+func New(ctx context.Context, name string, params config.DriverParams) (base.Driver, error) {
 	drv := &Driver{
-		name: name,
+		Base: base.New(ctx, name),
-		ctx:  ctx,
 		send: NewQueue[dto.Event](),
 	}
 	if err := util.UnmarshalParams(params, &drv.params); err != nil {
@@ -56,10 +52,6 @@ func (d *Driver) Handle(event dto.Event) error {
 	return nil
 }
 
-func (d *Driver) Name() string {
-	return d.name
-}
-
 func (d *Driver) Driver() config.DriverType {
 	return config.DriverPlugin
 }
@@ -88,21 +80,17 @@ func (d *Driver) Listen(ctx context.Context, stream EventStream) error {
 				return nil
 			}
 			if err != nil {
-				logger.Sugar.Errorw("error writing event to plugin",
+				d.Log().Errorw("error writing event to plugin",
-					"server", d.name, "error", err)
+					"server", d.Name(), "error", err)
 				return err
 			}
 		}
 	}
 }
 
-func (d *Driver) HandleStatus(event dto.EventStatus) {
-	logger.Sugar.Errorw("plugin error", "serverName", d.name, "id", event.ID, "error", event.Error)
-}
-
 func (d *Driver) isDone() bool {
 	select {
-	case <-d.ctx.Done():
+	case <-d.Context().Done():
 		return true
 	default:
 		return false
@@ -110,6 +98,6 @@ func (d *Driver) isDone() bool {
 }
 
 func (d *Driver) WaitForShutdown() {
-	<-d.ctx.Done()
+	<-d.Context().Done()
 	return
 }

internal/server/driver/ssh/driver.go

@@ -3,20 +3,26 @@ package ssh
 import (
 	"context"
 	"errors"
+	"fmt"
+	"os"
+	"path"
+	"strings"
 	"sync"
 
 	"github.com/Neur0toxine/sshpoke/internal/config"
-	"github.com/Neur0toxine/sshpoke/internal/server/driver/iface"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/base"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/ssh/types"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/util"
 	"github.com/Neur0toxine/sshpoke/internal/server/proto/sshtun"
 	"github.com/Neur0toxine/sshpoke/pkg/dto"
+	"golang.org/x/crypto/ssh"
 )
 
 type SSH struct {
-	ctx      context.Context
+	base.Base
-	name     string
 	params   Params
 	sessions map[string]conn
+	keys     []ssh.Signer
 	wg       sync.WaitGroup
 }
 
@@ -25,21 +31,47 @@ type conn struct {
 	tun       *sshtun.Tunnel
 }
 
-func New(ctx context.Context, name string, params config.DriverParams) (iface.Driver, error) {
+func New(ctx context.Context, name string, params config.DriverParams) (base.Driver, error) {
-	drv := &SSH{ctx: ctx, name: name, sessions: make(map[string]conn)}
+	drv := &SSH{
+		Base:     base.New(ctx, name),
+		sessions: make(map[string]conn),
+	}
 	if err := util.UnmarshalParams(params, &drv.params); err != nil {
 		return nil, err
 	}
+	drv.populateFromSSHConfig()
+	if err := drv.parseKeys(); err != nil {
+		return nil, err
+	}
 	return drv, nil
 }
 
-func (d *SSH) Handle(event dto.Event) error {
+func (d *SSH) populateFromSSHConfig() {
-	// TODO: Implement event handling & connections management.
+	if d.params.Auth.Directory == "" {
-	return errors.New(d.name + " server handler is not implemented yet")
+		return
+	}
+	cfg, err := parseSSHConfig(types.SmartPath(path.Join(string(d.params.Auth.Directory), "config")))
+	if err != nil {
+		return
+	}
+	if user, err := cfg.Get(d.params.Address, "User"); err == nil && user != "" {
+		d.params.Auth.User = user
+	}
+	if usePass, err := cfg.Get(d.params.Address, "PasswordAuthentication"); err == nil && usePass == "yes" {
+		d.params.Auth.Type = types.AuthTypePassword
+	}
+	if keyfile, err := cfg.Get(d.params.Address, "IdentityFile"); err == nil && keyfile != "" {
+		resolvedKeyFile, err := types.SmartPath(keyfile).Resolve(false)
+		if err == nil {
+			d.params.Auth.Type = types.AuthTypeKey
+			d.params.Auth.Keyfile = resolvedKeyFile
+		}
+	}
 }
 
-func (d *SSH) Name() string {
+func (d *SSH) Handle(event dto.Event) error {
-	return d.name
+	// TODO: Implement event handling & connections management.
+	return errors.New("server handler is not implemented yet")
 }
 
 func (d *SSH) Driver() config.DriverType {
@@ -49,3 +81,79 @@ func (d *SSH) Driver() config.DriverType {
 func (d *SSH) WaitForShutdown() {
 	d.wg.Wait()
 }
+
+func (d *SSH) parseKeys() error {
+	if d.params.Auth.Type != types.AuthTypeKey {
+		return nil
+	}
+	dir, err := d.params.Auth.Directory.Resolve(true)
+	if err != nil {
+		return fmt.Errorf("cannot parse keys: %s", err)
+	}
+	if d.params.Auth.Keyfile != "" {
+		key, err := parseKey(path.Join(dir, d.params.Auth.Keyfile))
+		if err != nil {
+			return err
+		}
+		d.keys = []ssh.Signer{key}
+		return nil
+	}
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return fmt.Errorf("cannot read key directory: %s", err)
+	}
+	keys := []ssh.Signer{}
+	for _, entry := range entries {
+		if entry.IsDir() {
+			d.Log().Debugf("skipping '%s' because it's a directory", entry.Name())
+			continue
+		}
+		info, err := entry.Info()
+		if err != nil {
+			d.Log().Debugf("skipping '%s' because stat failed: %s", entry.Name(), err)
+			continue
+		}
+		if strings.HasSuffix(entry.Name(), ".pub") {
+			d.Log().Debugf("skipping '%s' because it's probably a public key", entry.Name())
+			continue
+		}
+		if entry.Name() == "config" {
+			d.Log().Debugf("skipping '%s' because it's probably a ssh-config file", entry.Name())
+			continue
+		}
+		if entry.Name() == "known_hosts" {
+			d.Log().Debugf(
+				"skipping '%s' because it's probably a list of hosts generated by OpenSSH", entry.Name())
+			continue
+		}
+		// this file is too small to be a private key
+		if info.Size() < 256 {
+			d.Log().Debugf("skipping '%s' because the file is smaller than 256 bytes", entry.Name())
+			continue
+		}
+		key, err := parseKey(path.Join(dir, entry.Name()))
+		if err != nil {
+			d.Log().Debugf("skipping '%s' because it's probably not a key: %s", entry.Name(), err)
+			continue
+		}
+		d.Log().Debugf("loading key '%s', type: %s", entry.Name(), key.PublicKey().Type())
+		keys = append(keys, key)
+	}
+	if len(keys) == 0 {
+		return errors.New("no keys in the provided directory")
+	}
+	d.keys = keys
+	return nil
+}
+
+func parseKey(keyFile string) (ssh.Signer, error) {
+	keyData, err := os.ReadFile(keyFile)
+	if err != nil {
+		return nil, err
+	}
+	key, err := ssh.ParsePrivateKey(keyData)
+	if err != nil {
+		return nil, err
+	}
+	return key, nil
+}

internal/server/driver/ssh/params.go

@@ -1,63 +1,24 @@
 package ssh
 
 import (
-	"fmt"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/ssh/types"
-
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/util"
 )
 
 type Params struct {
-	Address            string     `mapstructure:"address" validate:"required"`
+	Address            string           `mapstructure:"address" validate:"required"`
-	Auth               Auth       `mapstructure:"auth"`
+	Auth               types.Auth       `mapstructure:"auth"`
-	KeepAlive          KeepAlive  `mapstructure:"keepalive"`
+	KeepAlive          types.KeepAlive  `mapstructure:"keepalive"`
-	Domain             string     `mapstructure:"domain"`
+	Domain             string           `mapstructure:"domain"`
-	DomainProto        string     `mapstructure:"domain_proto"`
+	DomainProto        string           `mapstructure:"domain_proto"`
-	DomainExtractRegex string     `mapstructure:"domain_extract_regex" validate:"validregexp"`
+	DomainExtractRegex string           `mapstructure:"domain_extract_regex" validate:"validregexp"`
-	Mode               DomainMode `mapstructure:"mode" validate:"required,oneof=single multi"`
+	Mode               types.DomainMode `mapstructure:"mode" validate:"required,oneof=single multi"`
-	Prefix             bool       `mapstructure:"prefix"`
+	Prefix             bool             `mapstructure:"prefix"`
-}
-
-type AuthType string
-
-const (
-	AuthTypePasswordless AuthType = "passwordless"
-	AuthTypePassword     AuthType = "password"
-	AuthTypeKey          AuthType = "key"
-)
-
-type DomainMode string
-
-const (
-	DomainModeSingle DomainMode = "single"
-	DomainModeMulti  DomainMode = "multi"
-)
-
-type Auth struct {
-	Type      AuthType `mapstructure:"type" validate:"required,oneof=passwordless password key"`
-	User      string   `mapstructure:"user"`
-	Password  string   `mapstructure:"password"`
-	Directory string   `mapstructure:"directory"`
-	Keyfile   string   `mapstructure:"keyfile"`
-}
-
-func (a Auth) validate() error {
-	if a.Type == AuthTypePassword && a.Password == "" {
-		return fmt.Errorf("password must be provided for authentication type '%s'", AuthTypePassword)
-	}
-	if a.Type == AuthTypeKey && a.Directory == "" {
-		return fmt.Errorf("password must be provided for authentication type '%s'", AuthTypePassword)
-	}
-	return nil
-}
-
-type KeepAlive struct {
-	Interval    int `mapstructure:"interval" validate:"gte=0"`
-	MaxAttempts int `mapstructure:"max_attempts" validate:"gte=1"`
 }
 
 func (p *Params) Validate() error {
 	if err := util.Validator.Struct(p); err != nil {
 		return err
 	}
-	return p.Auth.validate()
+	return p.Auth.Validate()
 }

internal/server/driver/ssh/sshconfig.go

@@ -0,0 +1,21 @@
+package ssh
+
+import (
+	"bytes"
+	"os"
+
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/ssh/types"
+	"github.com/kevinburke/ssh_config"
+)
+
+func parseSSHConfig(filePath types.SmartPath) (*ssh_config.Config, error) {
+	fileName, err := filePath.Resolve(false)
+	if err != nil {
+		return nil, err
+	}
+	file, err := os.ReadFile(fileName)
+	if err != nil {
+		return nil, err
+	}
+	return ssh_config.Decode(bytes.NewReader(file))
+}

internal/server/driver/ssh/types/auth.go

@@ -0,0 +1,73 @@
+package types
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+var envMatcherRegExp = regexp.MustCompile(`\$[\w\d\_]`)
+
+type (
+	AuthType  string
+	SmartPath string
+)
+
+const (
+	AuthTypePasswordless AuthType = "passwordless"
+	AuthTypePassword     AuthType = "password"
+	AuthTypeKey          AuthType = "key"
+)
+
+type Auth struct {
+	Type      AuthType  `mapstructure:"type" validate:"required,oneof=passwordless password key"`
+	User      string    `mapstructure:"user"`
+	Password  string    `mapstructure:"password"`
+	Directory SmartPath `mapstructure:"directory"`
+	Keyfile   string    `mapstructure:"keyfile"`
+}
+
+func (k SmartPath) Resolve(shouldBeDirectory bool) (result string, err error) {
+	result = strings.TrimSpace(string(k))
+	if strings.HasPrefix(result, "~/") {
+		homeDir, err := os.UserHomeDir()
+		if err != nil {
+			return "", err
+		}
+		result = path.Join(homeDir, result[2:])
+	}
+	for _, match := range envMatcherRegExp.FindAllString(string(k), -1) {
+		envVar := match[1:]
+		if envVar == "" {
+			continue
+		}
+		envVar = os.Getenv(envVar)
+		result = strings.ReplaceAll(result, match, envVar)
+	}
+	result, err = filepath.Abs(result)
+	if err != nil {
+		return
+	}
+	stat, err := os.Stat(result)
+	if err != nil {
+		return
+	}
+	if !stat.IsDir() && shouldBeDirectory {
+		err = errors.New("is not a directory")
+	}
+	return
+}
+
+func (a Auth) Validate() error {
+	if a.Type == AuthTypePassword && a.Password == "" {
+		return fmt.Errorf("password must be provided for authentication type '%s'", AuthTypePassword)
+	}
+	if a.Type == AuthTypeKey && a.Directory == "" {
+		return fmt.Errorf("password must be provided for authentication type '%s'", AuthTypePassword)
+	}
+	return nil
+}

internal/server/driver/ssh/types/domain_mode.go

@@ -0,0 +1,8 @@
+package types
+
+type DomainMode string
+
+const (
+	DomainModeSingle DomainMode = "single"
+	DomainModeMulti  DomainMode = "multi"
+)

internal/server/driver/ssh/types/keep_alive.go

@@ -0,0 +1,6 @@
+package types
+
+type KeepAlive struct {
+	Interval    int `mapstructure:"interval" validate:"gte=0"`
+	MaxAttempts int `mapstructure:"max_attempts" validate:"gte=1"`
+}

internal/server/manager.go

@@ -6,20 +6,28 @@ import (
 	"sync"
 
 	"github.com/Neur0toxine/sshpoke/internal/config"
+	"github.com/Neur0toxine/sshpoke/internal/docker"
 	"github.com/Neur0toxine/sshpoke/internal/logger"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver"
-	"github.com/Neur0toxine/sshpoke/internal/server/driver/iface"
+	"github.com/Neur0toxine/sshpoke/internal/server/driver/base"
 	"github.com/Neur0toxine/sshpoke/internal/server/driver/plugin"
 	"github.com/Neur0toxine/sshpoke/pkg/dto"
 )
 
 type Manager struct {
 	rw            sync.RWMutex
-	servers       map[string]iface.Driver
+	servers       map[string]base.Driver
 	plugins       map[string]plugin.Plugin
+	statusMap     map[string]serverStatus
+	statusLock    sync.RWMutex
 	defaultServer string
 }
 
+type serverStatus struct {
+	Name        string      `json:"name"`
+	Connections Connections `json:"connections"`
+}
+
 var DefaultManager *Manager
 var (
 	ErrNoServer     = errors.New("server is not specified")
@@ -28,7 +36,7 @@ var (
 
 func NewManager(ctx context.Context, servers []config.Server, defaultServer string) *Manager {
 	m := &Manager{
-		servers:       make(map[string]iface.Driver),
+		servers:       make(map[string]base.Driver),
 		plugins:       make(map[string]plugin.Plugin),
 		defaultServer: defaultServer,
 	}
@@ -38,6 +46,7 @@ func NewManager(ctx context.Context, servers []config.Server, defaultServer stri
 			logger.Sugar.Errorf("cannot initialize server '%s': %s", serverConfig.Name, err)
 			continue
 		}
+		server.SetEventStatusCallback(m.eventStatusCallback(server.Name()))
 		if server.Driver() == config.DriverPlugin {
 			pl := server.(plugin.Plugin)
 			if pl.Token() == "" {
@@ -73,6 +82,37 @@ func (m *Manager) ProcessEvent(event dto.Event) error {
 	return srv.Handle(event)
 }
 
+func (m *Manager) eventStatusCallback(serverName string) base.EventStatusCallback {
+	return func(status dto.EventStatus) {
+		m.processEventStatus(serverName, status)
+	}
+}
+
+func (m *Manager) processEventStatus(serverName string, event dto.EventStatus) {
+	m.statusLock.RLock()
+	_, exists := m.statusMap[serverName]
+	if !exists {
+		return
+	}
+	m.statusLock.RUnlock()
+	defer m.statusLock.Unlock()
+	m.statusLock.Lock()
+	item, found := docker.Default.GetContainer(event.ID)
+	if !found {
+		return
+	}
+	switch event.Type {
+	case dto.EventStart:
+		item.Domain = event.Domain
+	case dto.EventStop, dto.EventShutdown, dto.EventError:
+		item.Domain = ""
+
+	default:
+		return
+	}
+	m.statusMap[serverName].Connections[item.ID] = item
+}
+
 func (m *Manager) PluginByToken(token string) plugin.Plugin {
 	server, ok := m.plugins[token]
 	if !ok {

pkg/convert/convert.go

@@ -9,14 +9,15 @@ import (
 
 func MessageToAppEvent(event *pb.EventMessage) dto.Event {
 	return dto.Event{
-		Type: MessageEventTypeToApp(event.Type),
+		Type: MessageEventTypeToApp(event.GetType()),
-		ID:   event.Id,
 		Container: dto.Container{
-			IP:     net.ParseIP(event.Container.Ip),
+			ID:     event.GetContainer().GetId(),
-			Port:   uint16(event.Container.Port),
+			Names:  event.GetContainer().GetNames(),
-			Server: event.Container.Server,
+			IP:     net.ParseIP(event.GetContainer().GetIp()),
-			Prefix: event.Container.Prefix,
+			Port:   uint16(event.GetContainer().GetPort()),
-			Domain: event.Container.Domain,
+			Server: event.GetContainer().GetServer(),
+			Prefix: event.GetContainer().GetPrefix(),
+			Domain: event.GetContainer().GetDomain(),
 		},
 	}
 }
@@ -24,8 +25,9 @@ func MessageToAppEvent(event *pb.EventMessage) dto.Event {
 func AppEventToMessage(event dto.Event) *pb.EventMessage {
 	return &pb.EventMessage{
 		Type: AppEventTypeToMessage(event.Type),
-		Id:   event.ID,
 		Container: &pb.Container{
+			Id:     event.Container.ID,
+			Names:  event.Container.Names,
 			Ip:     event.Container.IP.String(),
 			Port:   uint32(event.Container.Port),
 			Server: event.Container.Server,
@@ -35,8 +37,18 @@ func AppEventToMessage(event dto.Event) *pb.EventMessage {
 	}
 }
 
+func MessageToAppEventStatus(val *pb.EventStatusMessage) dto.EventStatus {
+	return dto.EventStatus{
+		Type:   MessageEventTypeToApp(val.GetType()),
+		ID:     val.GetId(),
+		Error:  val.GetError(),
+		Domain: val.GetDomain(),
+	}
+}
+
 func AppEventStatusToMessage(status dto.EventStatus) *pb.EventStatusMessage {
 	return &pb.EventStatusMessage{
+		Type:   AppEventTypeToMessage(status.Type),
 		Id:     status.ID,
 		Error:  status.Error,
 		Domain: status.Domain,
@@ -58,7 +70,9 @@ func AppEventTypeToMessage(typ dto.EventType) pb.EventType {
 	case 1:
 		return pb.EventType_EVENT_STOP
 	case 2:
-		fallthrough
+		return pb.EventType_EVENT_SHUTDOWN
+	case 3:
+		return pb.EventType_EVENT_ERROR
 	default:
 		return pb.EventType_EVENT_UNKNOWN
 	}

pkg/dto/models.go

@@ -8,6 +8,7 @@ const (
 	EventStart EventType = iota
 	EventStop
 	EventShutdown
+	EventError
 	EventUnknown
 )
 
@@ -24,20 +25,22 @@ func TypeFromAction(action string) EventType {
 
 type Event struct {
 	Type      EventType
-	ID        string
 	Container Container
 }
 
 type EventStatus struct {
+	Type   EventType
 	ID     string
 	Error  string
 	Domain string
 }
 
 type Container struct {
-	IP     net.IP
+	ID     string   `json:"id"`
-	Port   uint16
+	Names  []string `json:"names"`
-	Server string
+	IP     net.IP   `json:"ip"`
-	Prefix string
+	Port   uint16   `json:"port"`
-	Domain string
+	Server string   `json:"-"`
+	Prefix string   `json:"prefix"`
+	Domain string   `json:"domain"`
 }

pkg/plugin/pb/pb.proto

@@ -13,15 +13,18 @@ enum EventType {
     EVENT_START = 0;
     EVENT_STOP = 1;
     EVENT_SHUTDOWN = 2;
-    EVENT_UNKNOWN = 3;
+    EVENT_ERROR = 3;
+    EVENT_UNKNOWN = 4;
 }
 
 message Container {
-    string ip = 1;
+    string id = 1;
-    uint32 port = 2;
+    repeated string names = 2;
-    string server = 3;
+    string ip = 3;
-    string prefix = 4;
+    uint32 port = 4;
-    string domain = 5;
+    string server = 5;
+    string prefix = 6;
+    string domain = 7;
 }
 
 message EventMessage {
@@ -31,7 +34,8 @@ message EventMessage {
 }
 
 message EventStatusMessage {
-    string id = 1;
+    EventType type = 1;
-    string error = 2;
+    string id = 2;
-    string domain = 3;
+    string error = 3;
+    string domain = 4;
 }