feat(backup): Add backup/restore to the server

api/http/handler/backup/backup.go

@@ -0,0 +1,53 @@
+package backup
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	httperror "github.com/portainer/libhttp/error"
+	"github.com/portainer/libhttp/request"
+	operations "github.com/portainer/portainer/api/backup"
+)
+
+type (
+	backupPayload struct {
+		Password string
+	}
+)
+
+func (p *backupPayload) Validate(r *http.Request) error {
+	return nil
+}
+
+// @id Backup
+// @summary Creates an archive with a system data snapshot that could be used to restore the system.
+// @description  Creates an archive with a system data snapshot that could be used to restore the system.
+// @description **Access policy**: admin
+// @tags backup
+// @security jwt
+// @produce octet-stream
+// @param Password body string false "Password to encrypt the backup with"
+// @success 200 "Success"
+// @failure 400 "Invalid request"
+// @failure 500 "Server error"
+// @router /backup [post]
+func (h *Handler) backup(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
+	var payload backupPayload
+	err := request.DecodeAndValidateJSONPayload(r, &payload)
+	if err != nil {
+		return &httperror.HandlerError{StatusCode: http.StatusBadRequest, Message: "Invalid request payload", Err: err}
+	}
+
+	archivePath, err := operations.CreateBackupArchive(payload.Password, h.gate, h.dataStore, h.filestorePath)
+	if err != nil {
+		return &httperror.HandlerError{StatusCode: http.StatusInternalServerError, Message: "Failed to create backup", Err: err}
+	}
+	defer os.RemoveAll(filepath.Dir(archivePath))
+
+	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s", fmt.Sprintf("portainer-backup_%s", filepath.Base(archivePath))))
+	http.ServeFile(w, r, archivePath)
+
+	return nil
+}

api/http/handler/backup/backup_test.go

@@ -0,0 +1,121 @@
+package backup
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/portainer/portainer/api/adminmonitor"
+	"github.com/portainer/portainer/api/crypto"
+	"github.com/portainer/portainer/api/http/offlinegate"
+	i "github.com/portainer/portainer/api/internal/testhelpers"
+	"github.com/stretchr/testify/assert"
+)
+
+func listFiles(dir string) []string {
+	items := make([]string, 0)
+	filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		if path == dir {
+			return nil
+		}
+		items = append(items, path)
+		return nil
+	})
+
+	return items
+}
+
+func contains(t *testing.T, list []string, path string) {
+	assert.Contains(t, list, path)
+	copyContent, _ := ioutil.ReadFile(path)
+	assert.Equal(t, "content\n", string(copyContent))
+}
+
+func Test_backupHandlerWithoutPassword_shouldCreateATarballArchive(t *testing.T) {
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(`{"password":""}`))
+	w := httptest.NewRecorder()
+
+	gate := offlinegate.NewOfflineGate()
+	adminMonitor := adminmonitor.New(time.Hour, nil, context.Background())
+
+	handlerErr := NewHandler(nil, i.NewDatastore(), gate, "./test_assets/handler_test", func() {}, adminMonitor).backup(w, r)
+	assert.Nil(t, handlerErr, "Handler should not fail")
+
+	response := w.Result()
+	body, _ := io.ReadAll(response.Body)
+
+	tmpdir, _ := os.MkdirTemp("", "backup")
+	defer os.RemoveAll(tmpdir)
+
+	archivePath := filepath.Join(tmpdir, "archive.tar.gz")
+	err := ioutil.WriteFile(archivePath, body, 0600)
+	if err != nil {
+		t.Fatal("Failed to save downloaded .tar.gz archive: ", err)
+	}
+	cmd := exec.Command("tar", "-xzf", archivePath, "-C", tmpdir)
+	err = cmd.Run()
+	if err != nil {
+		t.Fatal("Failed to extract archive: ", err)
+	}
+
+	createdFiles := listFiles(tmpdir)
+
+	contains(t, createdFiles, path.Join(tmpdir, "portainer.key"))
+	contains(t, createdFiles, path.Join(tmpdir, "portainer.pub"))
+	contains(t, createdFiles, path.Join(tmpdir, "tls", "file1"))
+	contains(t, createdFiles, path.Join(tmpdir, "tls", "file2"))
+	assert.NotContains(t, createdFiles, path.Join(tmpdir, "extra_file"))
+	assert.NotContains(t, createdFiles, path.Join(tmpdir, "extra_folder", "file1"))
+}
+
+func Test_backupHandlerWithPassword_shouldCreateEncryptedATarballArchive(t *testing.T) {
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(`{"password":"secret"}`))
+	w := httptest.NewRecorder()
+
+	gate := offlinegate.NewOfflineGate()
+	adminMonitor := adminmonitor.New(time.Hour, nil, nil)
+
+	handlerErr := NewHandler(nil, i.NewDatastore(), gate, "./test_assets/handler_test", func() {}, adminMonitor).backup(w, r)
+	assert.Nil(t, handlerErr, "Handler should not fail")
+
+	response := w.Result()
+	body, _ := io.ReadAll(response.Body)
+
+	tmpdir, _ := os.MkdirTemp("", "backup")
+	defer os.RemoveAll(tmpdir)
+
+	dr, err := crypto.AesDecrypt(bytes.NewReader(body), []byte("secret"))
+	if err != nil {
+		t.Fatal("Failed to decrypt archive")
+	}
+
+	archivePath := filepath.Join(tmpdir, "archive.tag.gz")
+	archive, _ := os.Create(archivePath)
+	defer archive.Close()
+	io.Copy(archive, dr)
+
+	cmd := exec.Command("tar", "-xzf", archivePath, "-C", tmpdir)
+	err = cmd.Run()
+	if err != nil {
+		t.Fatal("Failed to extract archive: ", err)
+	}
+
+	createdFiles := listFiles(tmpdir)
+
+	contains(t, createdFiles, path.Join(tmpdir, "portainer.key"))
+	contains(t, createdFiles, path.Join(tmpdir, "portainer.pub"))
+	contains(t, createdFiles, path.Join(tmpdir, "tls", "file1"))
+	contains(t, createdFiles, path.Join(tmpdir, "tls", "file2"))
+	assert.NotContains(t, createdFiles, path.Join(tmpdir, "extra_file"))
+	assert.NotContains(t, createdFiles, path.Join(tmpdir, "extra_folder", "file1"))
+}

api/http/handler/backup/handler.go

@@ -0,0 +1,65 @@
+package backup
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/gorilla/mux"
+	httperror "github.com/portainer/libhttp/error"
+	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/adminmonitor"
+	"github.com/portainer/portainer/api/http/offlinegate"
+	"github.com/portainer/portainer/api/http/security"
+)
+
+// Handler is an http handler responsible for backup and restore portainer state
+type Handler struct {
+	*mux.Router
+	bouncer         *security.RequestBouncer
+	dataStore       portainer.DataStore
+	gate            *offlinegate.OfflineGate
+	filestorePath   string
+	shutdownTrigger context.CancelFunc
+	adminMonitor    *adminmonitor.Monitor
+}
+
+// NewHandler creates an new instance of backup handler
+func NewHandler(bouncer *security.RequestBouncer, dataStore portainer.DataStore, gate *offlinegate.OfflineGate, filestorePath string, shutdownTrigger context.CancelFunc, adminMonitor *adminmonitor.Monitor) *Handler {
+	h := &Handler{
+		Router:          mux.NewRouter(),
+		bouncer:         bouncer,
+		dataStore:       dataStore,
+		gate:            gate,
+		filestorePath:   filestorePath,
+		shutdownTrigger: shutdownTrigger,
+		adminMonitor:    adminMonitor,
+	}
+
+	h.Handle("/backup", bouncer.RestrictedAccess(adminAccess(httperror.LoggerHandler(h.backup)))).Methods(http.MethodPost)
+	h.Handle("/restore", bouncer.PublicAccess(httperror.LoggerHandler(h.restore))).Methods(http.MethodPost)
+
+	return h
+}
+
+func adminAccess(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		securityContext, err := security.RetrieveRestrictedRequestContext(r)
+		if err != nil {
+			httperror.WriteError(w, http.StatusInternalServerError, "Unable to retrieve user info from request context", err)
+		}
+
+		if !securityContext.IsAdmin {
+			httperror.WriteError(w, http.StatusUnauthorized, "User is not authorized to perfom the action", nil)
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}
+
+func systemWasInitialized(dataStore portainer.DataStore) (bool, error) {
+	users, err := dataStore.User().UsersByRole(portainer.AdministratorRole)
+	if err != nil {
+		return false, err
+	}
+	return len(users) > 0, nil
+}

api/http/handler/backup/restore.go

@@ -0,0 +1,69 @@
+package backup
+
+import (
+	"bytes"
+	"io"
+	"net/http"
+
+	"github.com/pkg/errors"
+	httperror "github.com/portainer/libhttp/error"
+	"github.com/portainer/libhttp/request"
+	operations "github.com/portainer/portainer/api/backup"
+)
+
+type restorePayload struct {
+	FileContent []byte
+	FileName    string
+	Password    string
+}
+
+// @id Restore
+// @summary Triggers a system restore using provided backup file
+// @description Triggers a system restore using provided backup file
+// @description **Access policy**: public
+// @tags backup
+// @param FileContent body []byte true "Content of the backup"
+// @param FileName body string true "File name"
+// @param Password body string false "Password to decrypt the backup with"
+// @success 200  "Success"
+// @failure 400 "Invalid request"
+// @failure 500 "Server error"
+// @router /restore [post]
+func (h *Handler) restore(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
+	initialized, err := h.adminMonitor.WasInitialized()
+	if err != nil {
+		return &httperror.HandlerError{StatusCode: http.StatusInternalServerError, Message: "Failed to check system initialization", Err: err}
+	}
+	if initialized {
+		return &httperror.HandlerError{StatusCode: http.StatusBadRequest, Message: "Cannot restore already initialized instance", Err: errors.New("system already initialized")}
+	}
+	h.adminMonitor.Stop()
+	defer h.adminMonitor.Start()
+
+	var payload restorePayload
+	err = decodeForm(r, &payload)
+	if err != nil {
+		return &httperror.HandlerError{StatusCode: http.StatusBadRequest, Message: "Invalid request payload", Err: err}
+	}
+
+	var archiveReader io.Reader = bytes.NewReader(payload.FileContent)
+	err = operations.RestoreArchive(archiveReader, payload.Password, h.filestorePath, h.gate, h.dataStore, h.shutdownTrigger)
+	if err != nil {
+		return &httperror.HandlerError{StatusCode: http.StatusInternalServerError, Message: "Failed to restore the backup", Err: err}
+	}
+
+	return nil
+}
+
+func decodeForm(r *http.Request, p *restorePayload) error {
+	content, name, err := request.RetrieveMultiPartFormFile(r, "file")
+	if err != nil {
+		return err
+	}
+	p.FileContent = content
+	p.FileName = name
+
+	password, _ := request.RetrieveMultiPartFormValue(r, "password", true)
+	p.Password = password
+	return nil
+}

api/http/handler/backup/restore_test.go

@@ -0,0 +1,123 @@
+package backup
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/adminmonitor"
+	"github.com/portainer/portainer/api/http/offlinegate"
+	i "github.com/portainer/portainer/api/internal/testhelpers"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_restoreArchive_usingCombinationOfPasswords(t *testing.T) {
+	tests := []struct {
+		name            string
+		backupPassword  string
+		restorePassword string
+		fails           bool
+	}{
+		{
+			name:            "empty password to both encrypt and decrypt",
+			backupPassword:  "",
+			restorePassword: "",
+			fails:           false,
+		},
+		{
+			name:            "same password to encrypt and decrypt",
+			backupPassword:  "secret",
+			restorePassword: "secret",
+			fails:           false,
+		},
+		{
+			name:            "different passwords to encrypt and decrypt",
+			backupPassword:  "secret",
+			restorePassword: "terces",
+			fails:           true,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			datastore := i.NewDatastore(i.WithUsers([]portainer.User{}), i.WithEdgeJobs([]portainer.EdgeJob{}))
+			adminMonitor := adminmonitor.New(time.Hour, datastore, context.Background())
+
+			h := NewHandler(nil, datastore, offlinegate.NewOfflineGate(), "./test_assets/handler_test", func() {}, adminMonitor)
+
+			//backup
+			archive := backup(t, h, test.backupPassword)
+
+			//restore
+			w := httptest.NewRecorder()
+			r, err := prepareMultipartRequest(test.restorePassword, archive)
+			assert.Nil(t, err, "Shouldn't fail to write multipart form")
+
+			restoreErr := h.restore(w, r)
+			assert.Equal(t, test.fails, restoreErr != nil, "Didn't meet expectation of failing restore handler")
+		})
+	}
+}
+
+func Test_restoreArchive_shouldFailIfSystemWasAlreadyInitialized(t *testing.T) {
+	admin := portainer.User{
+		Role: portainer.AdministratorRole,
+	}
+	datastore := i.NewDatastore(i.WithUsers([]portainer.User{admin}), i.WithEdgeJobs([]portainer.EdgeJob{}))
+	adminMonitor := adminmonitor.New(time.Hour, datastore, context.Background())
+
+	h := NewHandler(nil, datastore, offlinegate.NewOfflineGate(), "./test_assets/handler_test", func() {}, adminMonitor)
+
+	//backup
+	archive := backup(t, h, "password")
+
+	//restore
+	w := httptest.NewRecorder()
+	r, err := prepareMultipartRequest("password", archive)
+	assert.Nil(t, err, "Shouldn't fail to write multipart form")
+
+	restoreErr := h.restore(w, r)
+	assert.NotNil(t, restoreErr, "Should fail, because system it already initialized")
+	assert.Equal(t, "Cannot restore already initialized instance", restoreErr.Message, "Should fail with certain error")
+}
+
+func backup(t *testing.T, h *Handler, password string) []byte {
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(fmt.Sprintf(`{"password":"%s"}`, password)))
+	w := httptest.NewRecorder()
+
+	backupErr := h.backup(w, r)
+	assert.Nil(t, backupErr, "Backup should not fail")
+
+	response := w.Result()
+	archive, _ := io.ReadAll(response.Body)
+	return archive
+}
+
+func prepareMultipartRequest(password string, file []byte) (*http.Request, error) {
+	var body bytes.Buffer
+	w := multipart.NewWriter(&body)
+	err := w.WriteField("password", password)
+	if err != nil {
+		return nil, err
+	}
+	fw, err := w.CreateFormFile("file", "filename")
+	if err != nil {
+		return nil, err
+	}
+	io.Copy(fw, bytes.NewReader(file))
+
+	r := httptest.NewRequest(http.MethodPost, "http://localhost/", &body)
+	r.Header.Set("Content-Type", w.FormDataContentType())
+
+	w.Close()
+
+	return r, nil
+}

api/http/handler/backup/test_assets/handler_test/extra_file

@@ -0,0 +1 @@
+content

api/http/handler/backup/test_assets/handler_test/extra_folder/file1

@@ -0,0 +1 @@
+content

api/http/handler/backup/test_assets/handler_test/portainer.key

@@ -0,0 +1 @@
+content

api/http/handler/backup/test_assets/handler_test/portainer.pub

@@ -0,0 +1 @@
+content

api/http/handler/backup/test_assets/handler_test/tls/file1

@@ -0,0 +1 @@
+content

api/http/handler/backup/test_assets/handler_test/tls/file2

@@ -0,0 +1 @@
+content

api/http/handler/handler.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 
 	"github.com/portainer/portainer/api/http/handler/auth"
+	"github.com/portainer/portainer/api/http/handler/backup"
 	"github.com/portainer/portainer/api/http/handler/customtemplates"
 	"github.com/portainer/portainer/api/http/handler/dockerhub"
 	"github.com/portainer/portainer/api/http/handler/edgegroups"
@@ -36,6 +37,7 @@ import (
 // Handler is a collection of all the service handlers.
 type Handler struct {
 	AuthHandler            *auth.Handler
+	BackupHandler          *backup.Handler
 	CustomTemplatesHandler *customtemplates.Handler
 	DockerHubHandler       *dockerhub.Handler
 	EdgeGroupsHandler      *edgegroups.Handler
@@ -140,6 +142,10 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	switch {
 	case strings.HasPrefix(r.URL.Path, "/api/auth"):
 		http.StripPrefix("/api", h.AuthHandler).ServeHTTP(w, r)
+	case strings.HasPrefix(r.URL.Path, "/api/backup"):
+		http.StripPrefix("/api", h.BackupHandler).ServeHTTP(w, r)
+	case strings.HasPrefix(r.URL.Path, "/api/restore"):
+		http.StripPrefix("/api", h.BackupHandler).ServeHTTP(w, r)
 	case strings.HasPrefix(r.URL.Path, "/api/dockerhub"):
 		http.StripPrefix("/api", h.DockerHubHandler).ServeHTTP(w, r)
 	case strings.HasPrefix(r.URL.Path, "/api/custom_templates"):

api/http/offlinegate/offlinegate.go

@@ -0,0 +1,71 @@
+package offlinegate
+
+import (
+	"log"
+	"net/http"
+	"sync"
+	"time"
+
+	httperror "github.com/portainer/libhttp/error"
+)
+
+// OfflineGate is a entity that works similar to a mutex with a signaling
+// Only the caller that have Locked an gate can unlock it, otherw will be blocked with a call to Lock.
+// Gate provides a passthrough http middleware that will wait for a locked gate to be unlocked.
+// For a safety reasons, middleware will timeout
+type OfflineGate struct {
+	lock        *sync.Mutex
+	signalingCh chan interface{}
+}
+
+// NewOfflineGate creates a new gate
+func NewOfflineGate() *OfflineGate {
+	return &OfflineGate{
+		lock: &sync.Mutex{},
+	}
+}
+
+// Lock locks readonly gate and returns a function to unlock
+func (o *OfflineGate) Lock() func() {
+	o.lock.Lock()
+	o.signalingCh = make(chan interface{})
+	return o.unlock
+}
+
+func (o *OfflineGate) unlock() {
+	if o.signalingCh == nil {
+		return
+	}
+
+	close(o.signalingCh)
+	o.signalingCh = nil
+	o.lock.Unlock()
+}
+
+// Watch returns a signaling channel.
+// Unless channel is nil, client needs to watch for a signal on a channel to know when gate is unlocked.
+// Signal channel is disposable: onced signaled, has to be disposed and acquired again.
+func (o *OfflineGate) Watch() chan interface{} {
+	return o.signalingCh
+}
+
+// WaitingMiddleware returns an http handler that waits for the gate to be unlocked before continuing
+func (o *OfflineGate) WaitingMiddleware(timeout time.Duration, next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		signalingCh := o.Watch()
+
+		if signalingCh != nil {
+			if r.Method != "GET" && r.Method != "HEAD" && r.Method != "OPTIONS" {
+				select {
+				case <-signalingCh:
+				case <-time.After(timeout):
+					log.Println("error: Timeout waiting for the offline gate to signal")
+					httperror.WriteError(w, http.StatusRequestTimeout, "Timeout waiting for the offline gate to signal", http.ErrHandlerTimeout)
+				}
+			}
+		}
+
+		next.ServeHTTP(w, r)
+
+	})
+}

api/http/offlinegate/offlinegate_test.go

@@ -0,0 +1,217 @@
+package offlinegate
+
+import (
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_canLockAndUnlock(t *testing.T) {
+	o := NewOfflineGate()
+
+	unlock := o.Lock()
+	unlock()
+}
+
+func Test_hasToBeUnlockedToLockAgain(t *testing.T) {
+	// scenario:
+	// 1. first routine starts and locks the gate
+	// 2. first routine starts a second and wait for the second to start
+	// 3. second start but waits for the gate to be released
+	// 4. first continues and unlocks the gate, when done
+	// 5. second be able to continue
+	// 6. second lock the gate, does the job and unlocks it
+
+	o := NewOfflineGate()
+
+	wg := sync.WaitGroup{}
+	wg.Add(2)
+
+	result := make([]string, 0, 2)
+	go func() {
+		unlock := o.Lock()
+		defer unlock()
+		waitForSecondToStart := sync.WaitGroup{}
+		waitForSecondToStart.Add(1)
+		go func() {
+			waitForSecondToStart.Done()
+			unlock := o.Lock()
+			defer unlock()
+			result = append(result, "second")
+			wg.Done()
+		}()
+		waitForSecondToStart.Wait()
+		result = append(result, "first")
+		wg.Done()
+	}()
+
+	wg.Wait()
+
+	if len(result) != 2 || result[0] != "first" || result[1] != "second" {
+		t.Error("Second call have disresregarded a raised lock")
+	}
+
+}
+
+func Test_waitChannelWillBeEmpty_ifGateIsUnlocked(t *testing.T) {
+	o := NewOfflineGate()
+
+	signalingCh := o.Watch()
+	if signalingCh != nil {
+		t.Error("Signaling channel should be empty")
+	}
+}
+
+func Test_startWaitingForSignal_beforeGateGetsUnlocked(t *testing.T) {
+	// scenario:
+	// 1. main routing locks the gate and waits for a consumer to start up
+	// 2. consumer starts up, notifies main and begins waiting for the gate to be unlocked
+	// 3. main unlocks the gate
+	// 4. consumer be able to continue
+
+	o := NewOfflineGate()
+	unlock := o.Lock()
+
+	signalingCh := o.Watch()
+
+	wg := sync.WaitGroup{}
+	wg.Add(1)
+	readerIsReady := sync.WaitGroup{}
+	readerIsReady.Add(1)
+
+	go func(t *testing.T) {
+		readerIsReady.Done()
+
+		// either wait for a signal or timeout
+		select {
+		case <-signalingCh:
+		case <-time.After(10 * time.Second):
+			t.Error("Failed to wait for a signal, exit by timeout")
+		}
+		wg.Done()
+	}(t)
+
+	readerIsReady.Wait()
+	unlock()
+
+	wg.Wait()
+}
+
+func Test_startWaitingForSignal_afterGateGetsUnlocked(t *testing.T) {
+	// scenario:
+	// 1. main routing locks, gets waiting channel and unlocks
+	// 2. consumer starts up and begins waiting for the gate to be unlocked
+	// 3. consumer gets signal immediately and continues
+
+	o := NewOfflineGate()
+	unlock := o.Lock()
+	signalingCh := o.Watch()
+	unlock()
+
+	wg := sync.WaitGroup{}
+	wg.Add(1)
+
+	go func(t *testing.T) {
+		// either wait for a signal or timeout
+		select {
+		case <-signalingCh:
+		case <-time.After(10 * time.Second):
+			t.Error("Failed to wait for a signal, exit by timeout")
+		}
+		wg.Done()
+	}(t)
+
+	wg.Wait()
+}
+
+func Test_waitingMiddleware_executesImmediately_whenNotLocked(t *testing.T) {
+	// scenario:
+	// 1. create an gate
+	// 2. kick off a waiting middleware that will release immediately as gate wasn't locked
+	// 3. middleware shouldn't timeout
+
+	o := NewOfflineGate()
+
+	request := httptest.NewRequest(http.MethodPost, "/", nil)
+	response := httptest.NewRecorder()
+
+	timeout := 2 * time.Second
+	start := time.Now()
+	o.WaitingMiddleware(timeout, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		elapsed := time.Since(start)
+		if elapsed >= timeout {
+			t.Error("WaitingMiddleware had likely timeout, when it shouldn't")
+		}
+		w.Write([]byte("success"))
+	})).ServeHTTP(response, request)
+
+	body, _ := io.ReadAll(response.Body)
+	if string(body) != "success" {
+		t.Error("Didn't receive expected result from the hanlder")
+	}
+}
+
+func Test_waitingMiddleware_waitsForTheLockToBeReleased(t *testing.T) {
+	// scenario:
+	// 1. create an gate and lock it
+	// 2. kick off a routing that will unlock the gate after 1 second
+	// 3. kick off a waiting middleware that will wait for lock to be eventually released
+	// 4. middleware shouldn't timeout
+
+	o := NewOfflineGate()
+	unlock := o.Lock()
+
+	request := httptest.NewRequest(http.MethodPost, "/", nil)
+	response := httptest.NewRecorder()
+
+	go func() {
+		time.Sleep(1 * time.Second)
+		unlock()
+	}()
+
+	timeout := 10 * time.Second
+	start := time.Now()
+	o.WaitingMiddleware(timeout, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		elapsed := time.Since(start)
+		if elapsed >= timeout {
+			t.Error("WaitingMiddleware had likely timeout, when it shouldn't")
+		}
+		w.Write([]byte("success"))
+	})).ServeHTTP(response, request)
+
+	body, _ := io.ReadAll(response.Body)
+	if string(body) != "success" {
+		t.Error("Didn't receive expected result from the hanlder")
+	}
+}
+
+func Test_waitingMiddleware_mayTimeout_whenLockedForTooLong(t *testing.T) {
+	/*
+		scenario:
+		1. create an gate and lock it
+		2. kick off a waiting middleware that will wait for lock to be eventually released
+		3. because we never unlocked the gate, middleware suppose to timeout
+	*/
+	o := NewOfflineGate()
+	o.Lock()
+
+	request := httptest.NewRequest(http.MethodPost, "/", nil)
+	response := httptest.NewRecorder()
+
+	timeout := 1 * time.Second
+	start := time.Now()
+	o.WaitingMiddleware(timeout, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		elapsed := time.Since(start)
+		if elapsed < timeout {
+			t.Error("WaitingMiddleware suppose to timeout, but it didnt")
+		}
+		w.Write([]byte("success"))
+	})).ServeHTTP(response, request)
+
+	assert.Equal(t, http.StatusRequestTimeout, response.Result().StatusCode, "Request support to timeout waiting for the gate")
+}

api/http/security/bouncer.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 
 	httperror "github.com/portainer/libhttp/error"
-	"github.com/portainer/portainer/api"
+	portainer "github.com/portainer/portainer/api"
 	bolterrors "github.com/portainer/portainer/api/bolt/errors"
 	httperrors "github.com/portainer/portainer/api/http/errors"
 )
@@ -153,6 +153,9 @@ func (bouncer *RequestBouncer) RegistryAccess(r *http.Request, registry *portain
 	return nil
 }
 
+// handlers are applied backwards to the incoming request:
+// - add secure handlers to the response
+// - parse the JWT token and put it into the http context.
 func (bouncer *RequestBouncer) mwAuthenticatedUser(h http.Handler) http.Handler {
 	h = bouncer.mwCheckAuthentication(h)
 	h = mwSecureHeaders(h)
@@ -216,6 +219,8 @@ func (bouncer *RequestBouncer) mwUpgradeToRestrictedRequest(next http.Handler) h
 }
 
 // mwCheckAuthentication provides Authentication middleware for handlers
+//
+// It parses the JWT token and adds the parsed token data to the http context
 func (bouncer *RequestBouncer) mwCheckAuthentication(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		var tokenData *portainer.TokenData
@@ -269,30 +274,31 @@ func mwSecureHeaders(next http.Handler) http.Handler {
 }
 
 func (bouncer *RequestBouncer) newRestrictedContextRequest(userID portainer.UserID, userRole portainer.UserRole) (*RestrictedRequestContext, error) {
-	requestContext := &RestrictedRequestContext{
-		IsAdmin: true,
-		UserID:  userID,
+	if userRole == portainer.AdministratorRole {
+		return &RestrictedRequestContext{
+			IsAdmin: true,
+			UserID:  userID,
+		}, nil
 	}
 
-	if userRole != portainer.AdministratorRole {
-		requestContext.IsAdmin = false
-		memberships, err := bouncer.dataStore.TeamMembership().TeamMembershipsByUserID(userID)
-		if err != nil {
-			return nil, err
-		}
-
-		isTeamLeader := false
-		for _, membership := range memberships {
-			if membership.Role == portainer.TeamLeader {
-				isTeamLeader = true
-			}
-		}
-
-		requestContext.IsTeamLeader = isTeamLeader
-		requestContext.UserMemberships = memberships
+	memberships, err := bouncer.dataStore.TeamMembership().TeamMembershipsByUserID(userID)
+	if err != nil {
+		return nil, err
 	}
 
-	return requestContext, nil
+	isTeamLeader := false
+	for _, membership := range memberships {
+		if membership.Role == portainer.TeamLeader {
+			isTeamLeader = true
+		}
+	}
+
+	return &RestrictedRequestContext{
+		IsAdmin:         false,
+		UserID:          userID,
+		IsTeamLeader:    isTeamLeader,
+		UserMemberships: memberships,
+	}, nil
 }
 
 // EdgeComputeOperation defines a restriced edge compute operation.

api/http/server.go

@@ -1,15 +1,20 @@
 package http
 
 import (
+	"context"
+	"fmt"
+	"log"
 	"net/http"
 	"path/filepath"
 	"time"
 
 	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/adminmonitor"
 	"github.com/portainer/portainer/api/crypto"
 	"github.com/portainer/portainer/api/docker"
 	"github.com/portainer/portainer/api/http/handler"
 	"github.com/portainer/portainer/api/http/handler/auth"
+	"github.com/portainer/portainer/api/http/handler/backup"
 	"github.com/portainer/portainer/api/http/handler/customtemplates"
 	"github.com/portainer/portainer/api/http/handler/dockerhub"
 	"github.com/portainer/portainer/api/http/handler/edgegroups"
@@ -36,10 +41,10 @@ import (
 	"github.com/portainer/portainer/api/http/handler/users"
 	"github.com/portainer/portainer/api/http/handler/webhooks"
 	"github.com/portainer/portainer/api/http/handler/websocket"
+	"github.com/portainer/portainer/api/http/offlinegate"
 	"github.com/portainer/portainer/api/http/proxy"
 	"github.com/portainer/portainer/api/http/proxy/factory/kubernetes"
 	"github.com/portainer/portainer/api/http/security"
-
 	"github.com/portainer/portainer/api/kubernetes/cli"
 )
 
@@ -69,6 +74,8 @@ type Server struct {
 	DockerClientFactory         *docker.ClientFactory
 	KubernetesClientFactory     *cli.ClientFactory
 	KubernetesDeployer          portainer.KubernetesDeployer
+	ShutdownCtx                 context.Context
+	ShutdownTrigger             context.CancelFunc
 }
 
 // Start starts the HTTP server
@@ -78,6 +85,7 @@ func (server *Server) Start() error {
 	requestBouncer := security.NewRequestBouncer(server.DataStore, server.JWTService)
 
 	rateLimiter := security.NewRateLimiter(10, 1*time.Second, 1*time.Hour)
+	offlineGate := offlinegate.NewOfflineGate()
 
 	var authHandler = auth.NewHandler(requestBouncer, rateLimiter)
 	authHandler.DataStore = server.DataStore
@@ -88,6 +96,11 @@ func (server *Server) Start() error {
 	authHandler.KubernetesTokenCacheManager = kubernetesTokenCacheManager
 	authHandler.OAuthService = server.OAuthService
 
+	adminMonitor := adminmonitor.New(5*time.Minute, server.DataStore, server.ShutdownCtx)
+	adminMonitor.Start()
+
+	var backupHandler = backup.NewHandler(requestBouncer, server.DataStore, offlineGate, server.FileService.GetDatastorePath(), server.ShutdownTrigger, adminMonitor)
+
 	var roleHandler = roles.NewHandler(requestBouncer)
 	roleHandler.DataStore = server.DataStore
 
@@ -200,6 +213,7 @@ func (server *Server) Start() error {
 	server.Handler = &handler.Handler{
 		RoleHandler:            roleHandler,
 		AuthHandler:            authHandler,
+		BackupHandler:          backupHandler,
 		CustomTemplatesHandler: customTemplatesHandler,
 		DockerHubHandler:       dockerHubHandler,
 		EdgeGroupsHandler:      edgeGroupsHandler,
@@ -231,10 +245,27 @@ func (server *Server) Start() error {
 		Addr:    server.BindAddress,
 		Handler: server.Handler,
 	}
+	httpServer.Handler = offlineGate.WaitingMiddleware(time.Minute, httpServer.Handler)
 
 	if server.SSL {
 		httpServer.TLSConfig = crypto.CreateServerTLSConfiguration()
 		return httpServer.ListenAndServeTLS(server.SSLCert, server.SSLKey)
 	}
+
+	go server.shutdown(httpServer)
+
 	return httpServer.ListenAndServe()
 }
+
+func (server *Server) shutdown(httpServer *http.Server) {
+	<-server.ShutdownCtx.Done()
+
+	log.Println("[DEBUG] Shutting down http server")
+	shutdownTimeout, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	err := httpServer.Shutdown(shutdownTimeout)
+	if err != nil {
+		fmt.Printf("Failed shutdown http server: %s \n", err)
+	}
+}