test postgres

Add automated zitadel configuration and netbird using a single script

run infra files test only when they change or when pushed to main

run releases only on changes to related files or when pushed to main

push install and automated getting started script to releases page

.github/workflows/release.yml

@@ -7,6 +7,16 @@ on:
     branches:
       - main
   pull_request:
+    paths:
+      - 'go.mod'
+      - 'go.sum'
+      - '.goreleaser.yml'
+      - '.goreleaser_ui.yaml'
+      - '.goreleaser_ui_darwin.yaml'
+      - '.github/workflows/release.yml'
+      - 'release_files/**'
+      - '**/Dockerfile'
+      - '**/Dockerfile.*'
 
 env:
   SIGN_PIPE_VER: "v0.0.8"

.github/workflows/test-infrastructure-files.yml

@@ -1,10 +1,13 @@
-name: Test Docker Compose Linux
+name: Test Infrastructure files
 
 on:
   push:
     branches:
       - main
   pull_request:
+    paths:
+      - 'infrastructure_files/**'
+      - '.github/workflows/test-infrastructure-files.yml'
 
 
 concurrency:
@@ -12,7 +15,7 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  test:
+  test-docker-compose:
     runs-on: ubuntu-latest
     steps:
       - name: Install jq
@@ -35,7 +38,7 @@ jobs:
             ${{ runner.os }}-go-
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: cp setup.env
         run: cp infrastructure_files/tests/setup.env infrastructure_files/
@@ -69,6 +72,7 @@ jobs:
           CI_NETBIRD_AUTH_JWT_CERTS: https://example.eu.auth0.com/.well-known/jwks.json
           CI_NETBIRD_AUTH_TOKEN_ENDPOINT: https://example.eu.auth0.com/oauth/token
           CI_NETBIRD_AUTH_DEVICE_AUTH_ENDPOINT: https://example.eu.auth0.com/oauth/device/code
+          CI_NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT: https://example.eu.auth0.com/authorize
           CI_NETBIRD_AUTH_REDIRECT_URI: "/peers"
           CI_NETBIRD_TOKEN_SOURCE: "idToken"
           CI_NETBIRD_AUTH_USER_ID_CLAIM: "email"
@@ -91,8 +95,8 @@ jobs:
           grep LETSENCRYPT_DOMAIN docker-compose.yml | egrep 'LETSENCRYPT_DOMAIN=$'
           grep NETBIRD_TOKEN_SOURCE docker-compose.yml | grep $CI_NETBIRD_TOKEN_SOURCE
           grep AuthUserIDClaim management.json | grep $CI_NETBIRD_AUTH_USER_ID_CLAIM
-          grep -A 1 ProviderConfig management.json | grep Audience | grep $CI_NETBIRD_AUTH_DEVICE_AUTH_AUDIENCE
-          grep Scope management.json | grep "$CI_NETBIRD_AUTH_DEVICE_AUTH_SCOPE"
+          grep -A 3 DeviceAuthorizationFlow management.json | grep -A 1 ProviderConfig | grep Audience | grep $CI_NETBIRD_AUTH_DEVICE_AUTH_AUDIENCE
+          grep -A 8 DeviceAuthorizationFlow management.json | grep -A 6 ProviderConfig | grep Scope | grep "$CI_NETBIRD_AUTH_DEVICE_AUTH_SCOPE"
           grep UseIDToken management.json | grep false
           grep -A 1 IdpManagerConfig management.json | grep ManagerType | grep $CI_NETBIRD_MGMT_IDP 
           grep -A 3 IdpManagerConfig management.json | grep -A 1 ClientConfig | grep Issuer | grep $CI_NETBIRD_AUTH_AUTHORITY
@@ -100,6 +104,12 @@ jobs:
           grep -A 5 IdpManagerConfig management.json | grep -A 3 ClientConfig | grep ClientID | grep $CI_NETBIRD_IDP_MGMT_CLIENT_ID
           grep -A 6 IdpManagerConfig management.json | grep -A 4 ClientConfig | grep ClientSecret | grep $CI_NETBIRD_IDP_MGMT_CLIENT_SECRET
           grep -A 7 IdpManagerConfig management.json | grep -A 5 ClientConfig | grep GrantType | grep client_credentials
+          grep -A 2 PKCEAuthorizationFlow management.json | grep -A 1 ProviderConfig | grep Audience | grep $CI_NETBIRD_AUTH_AUDIENCE
+          grep -A 3 PKCEAuthorizationFlow management.json | grep -A 2 ProviderConfig | grep ClientID | grep $CI_NETBIRD_AUTH_CLIENT_ID
+          grep -A 4 PKCEAuthorizationFlow management.json | grep -A 3 ProviderConfig | grep ClientSecret | grep $CI_NETBIRD_AUTH_CLIENT_SECRET
+          grep -A 5 PKCEAuthorizationFlow management.json | grep -A 4 ProviderConfig | grep AuthorizationEndpoint | grep $CI_NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT
+          grep -A 6 PKCEAuthorizationFlow management.json | grep -A 5 ProviderConfig | grep TokenEndpoint | grep $CI_NETBIRD_AUTH_TOKEN_ENDPOINT
+          grep -A 7 PKCEAuthorizationFlow management.json | grep -A 6 ProviderConfig | grep Scope | grep "$CI_NETBIRD_AUTH_SUPPORTED_SCOPES"
 
       - name: run docker compose up
         working-directory: infrastructure_files
@@ -114,3 +124,28 @@ jobs:
           count=$(docker compose ps --format json | jq '.[] | select(.Project | contains("infrastructure_files")) | .State' | grep -c running)
           test $count -eq 4
         working-directory: infrastructure_files
+
+  test-getting-started-script:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install jq
+        run: sudo apt-get install -y jq
+
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: run script
+        run: bash -x infrastructure_files/getting-started-with-zitadel.sh
+
+      - name: test Caddy file gen
+        run: test -f Caddyfile
+      - name: test docker-compose file gen
+        run: test -f docker-compose.yml
+      - name: test management.json file gen
+        run: test -f management.json
+      - name: test turnserver.conf file gen
+        run: test -f turnserver.conf
+      - name: test zitadel.env file gen
+        run: test -f zitadel.env
+      - name: test dashboard.env file gen
+        run: test -f dashboard.env

.goreleaser.yaml

@@ -377,3 +377,8 @@ uploads:
     target: https://pkgs.wiretrustee.com/yum/{{ .Arch }}{{ if .Arm }}{{ .Arm }}{{ end }}
     username: dev@wiretrustee.com
     method: PUT
+
+release:
+  extra_files:
+    - glob: ./infrastructure_files/getting-started-with-zitadel.sh
+    - glob: ./release_files/install.sh

README.md

@@ -57,9 +57,10 @@ NetBird uses [NAT traversal techniques](https://en.wikipedia.org/wiki/Interactiv
 - \[x] Network Routes.  
 - \[x] Private DNS.
 - \[x] Network Activity Monitoring.
-
+- \[x] Mobile clients (Android).
+- 
 **Coming soon:**
--  \[ ] Mobile clients.
+-  \[ ] Mobile clients (iOS).
 
 ### Secure peer-to-peer VPN with SSO and MFA in minutes
 

client/android/login.go

@@ -6,15 +6,14 @@ import (
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
-
 	log "github.com/sirupsen/logrus"
 	"google.golang.org/grpc/codes"
 	gstatus "google.golang.org/grpc/status"
 
 	"github.com/netbirdio/netbird/client/cmd"
-	"github.com/netbirdio/netbird/client/system"
-
 	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/auth"
+	"github.com/netbirdio/netbird/client/system"
 )
 
 // SSOListener is async listener for mobile framework
@@ -87,9 +86,15 @@ func (a *Auth) saveConfigIfSSOSupported() (bool, error) {
 	err := a.withBackOff(a.ctx, func() (err error) {
 		_, err = internal.GetDeviceAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
 		if s, ok := gstatus.FromError(err); ok && s.Code() == codes.NotFound {
-			supportsSSO = false
-			err = nil
+			_, err = internal.GetPKCEAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
+			if s, ok := gstatus.FromError(err); ok && s.Code() == codes.NotFound {
+				supportsSSO = false
+				err = nil
+			}
+
+			return err
 		}
+
 		return err
 	})
 
@@ -183,27 +188,15 @@ func (a *Auth) login(urlOpener URLOpener) error {
 	return nil
 }
 
-func (a *Auth) foregroundGetTokenInfo(urlOpener URLOpener) (*internal.TokenInfo, error) {
-	providerConfig, err := internal.GetDeviceAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
+func (a *Auth) foregroundGetTokenInfo(urlOpener URLOpener) (*auth.TokenInfo, error) {
+	oAuthFlow, err := auth.NewOAuthFlow(a.ctx, a.config)
 	if err != nil {
-		s, ok := gstatus.FromError(err)
-		if ok && s.Code() == codes.NotFound {
-			return nil, fmt.Errorf("no SSO provider returned from management. " +
-				"If you are using hosting Netbird see documentation at " +
-				"https://github.com/netbirdio/netbird/tree/main/management for details")
-		} else if ok && s.Code() == codes.Unimplemented {
-			return nil, fmt.Errorf("the management server, %s, does not support SSO providers, "+
-				"please update your servver or use Setup Keys to login", a.config.ManagementURL)
-		} else {
-			return nil, fmt.Errorf("getting device authorization flow info failed with error: %v", err)
-		}
+		return nil, err
 	}
 
-	hostedClient := internal.NewHostedDeviceFlow(providerConfig.ProviderConfig)
-
-	flowInfo, err := hostedClient.RequestDeviceCode(context.TODO())
+	flowInfo, err := oAuthFlow.RequestAuthInfo(context.TODO())
 	if err != nil {
-		return nil, fmt.Errorf("getting a request device code failed: %v", err)
+		return nil, fmt.Errorf("getting a request OAuth flow info failed: %v", err)
 	}
 
 	go urlOpener.Open(flowInfo.VerificationURIComplete)
@@ -211,7 +204,7 @@ func (a *Auth) foregroundGetTokenInfo(urlOpener URLOpener) (*internal.TokenInfo,
 	waitTimeout := time.Duration(flowInfo.ExpiresIn)
 	waitCTX, cancel := context.WithTimeout(a.ctx, waitTimeout*time.Second)
 	defer cancel()
-	tokenInfo, err := hostedClient.WaitToken(waitCTX, flowInfo)
+	tokenInfo, err := oAuthFlow.WaitToken(waitCTX, flowInfo)
 	if err != nil {
 		return nil, fmt.Errorf("waiting for browser login failed: %v", err)
 	}

client/cmd/login.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"context"
 	"fmt"
+	"github.com/netbirdio/netbird/client/internal/auth"
 	"strings"
 	"time"
 
@@ -163,31 +164,15 @@ func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *internal.C
 	return nil
 }
 
-func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *internal.Config) (*internal.TokenInfo, error) {
-	providerConfig, err := internal.GetDeviceAuthorizationFlowInfo(ctx, config.PrivateKey, config.ManagementURL)
+func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *internal.Config) (*auth.TokenInfo, error) {
+	oAuthFlow, err := auth.NewOAuthFlow(ctx, config)
 	if err != nil {
-		s, ok := gstatus.FromError(err)
-		if ok && s.Code() == codes.NotFound {
-			return nil, fmt.Errorf("no SSO provider returned from management. " +
-				"If you are using hosting Netbird see documentation at " +
-				"https://github.com/netbirdio/netbird/tree/main/management for details")
-		} else if ok && s.Code() == codes.Unimplemented {
-			mgmtURL := managementURL
-			if mgmtURL == "" {
-				mgmtURL = internal.DefaultManagementURL
-			}
-			return nil, fmt.Errorf("the management server, %s, does not support SSO providers, "+
-				"please update your servver or use Setup Keys to login", mgmtURL)
-		} else {
-			return nil, fmt.Errorf("getting device authorization flow info failed with error: %v", err)
-		}
+		return nil, err
 	}
 
-	hostedClient := internal.NewHostedDeviceFlow(providerConfig.ProviderConfig)
-
-	flowInfo, err := hostedClient.RequestDeviceCode(context.TODO())
+	flowInfo, err := oAuthFlow.RequestAuthInfo(context.TODO())
 	if err != nil {
-		return nil, fmt.Errorf("getting a request device code failed: %v", err)
+		return nil, fmt.Errorf("getting a request OAuth flow info failed: %v", err)
 	}
 
 	openURL(cmd, flowInfo.VerificationURIComplete, flowInfo.UserCode)
@@ -196,7 +181,7 @@ func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *int
 	waitCTX, c := context.WithTimeout(context.TODO(), waitTimeout*time.Second)
 	defer c()
 
-	tokenInfo, err := hostedClient.WaitToken(waitCTX, flowInfo)
+	tokenInfo, err := oAuthFlow.WaitToken(waitCTX, flowInfo)
 	if err != nil {
 		return nil, fmt.Errorf("waiting for browser login failed: %v", err)
 	}
@@ -206,8 +191,10 @@ func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *int
 
 func openURL(cmd *cobra.Command, verificationURIComplete, userCode string) {
 	var codeMsg string
-	if !strings.Contains(verificationURIComplete, userCode) {
-		codeMsg = fmt.Sprintf("and enter the code %s to authenticate.", userCode)
+	if userCode != "" {
+		if !strings.Contains(verificationURIComplete, userCode) {
+			codeMsg = fmt.Sprintf("and enter the code %s to authenticate.", userCode)
+		}
 	}
 
 	err := open.Run(verificationURIComplete)

client/internal/auth/device_flow.go

@@ -0,0 +1,202 @@
+package auth
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/netbirdio/netbird/client/internal"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// HostedGrantType grant type for device flow on Hosted
+const (
+	HostedGrantType = "urn:ietf:params:oauth:grant-type:device_code"
+)
+
+var _ OAuthFlow = &DeviceAuthorizationFlow{}
+
+// DeviceAuthorizationFlow implements the OAuthFlow interface,
+// for the Device Authorization Flow.
+type DeviceAuthorizationFlow struct {
+	providerConfig internal.DeviceAuthProviderConfig
+
+	HTTPClient HTTPClient
+}
+
+// RequestDeviceCodePayload used for request device code payload for auth0
+type RequestDeviceCodePayload struct {
+	Audience string `json:"audience"`
+	ClientID string `json:"client_id"`
+	Scope    string `json:"scope"`
+}
+
+// TokenRequestPayload used for requesting the auth0 token
+type TokenRequestPayload struct {
+	GrantType    string `json:"grant_type"`
+	DeviceCode   string `json:"device_code,omitempty"`
+	ClientID     string `json:"client_id"`
+	RefreshToken string `json:"refresh_token,omitempty"`
+}
+
+// TokenRequestResponse used for parsing Hosted token's response
+type TokenRequestResponse struct {
+	Error            string `json:"error"`
+	ErrorDescription string `json:"error_description"`
+	TokenInfo
+}
+
+// NewDeviceAuthorizationFlow returns device authorization flow client
+func NewDeviceAuthorizationFlow(config internal.DeviceAuthProviderConfig) (*DeviceAuthorizationFlow, error) {
+	httpTransport := http.DefaultTransport.(*http.Transport).Clone()
+	httpTransport.MaxIdleConns = 5
+
+	httpClient := &http.Client{
+		Timeout:   10 * time.Second,
+		Transport: httpTransport,
+	}
+
+	return &DeviceAuthorizationFlow{
+		providerConfig: config,
+		HTTPClient:     httpClient,
+	}, nil
+}
+
+// GetClientID returns the provider client id
+func (d *DeviceAuthorizationFlow) GetClientID(ctx context.Context) string {
+	return d.providerConfig.ClientID
+}
+
+// RequestAuthInfo requests a device code login flow information from Hosted
+func (d *DeviceAuthorizationFlow) RequestAuthInfo(ctx context.Context) (AuthFlowInfo, error) {
+	form := url.Values{}
+	form.Add("client_id", d.providerConfig.ClientID)
+	form.Add("audience", d.providerConfig.Audience)
+	form.Add("scope", d.providerConfig.Scope)
+	req, err := http.NewRequest("POST", d.providerConfig.DeviceAuthEndpoint,
+		strings.NewReader(form.Encode()))
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("creating request failed with error: %v", err)
+	}
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+
+	res, err := d.HTTPClient.Do(req)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("doing request failed with error: %v", err)
+	}
+
+	defer res.Body.Close()
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("reading body failed with error: %v", err)
+	}
+
+	if res.StatusCode != 200 {
+		return AuthFlowInfo{}, fmt.Errorf("request device code returned status %d error: %s", res.StatusCode, string(body))
+	}
+
+	deviceCode := AuthFlowInfo{}
+	err = json.Unmarshal(body, &deviceCode)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("unmarshaling response failed with error: %v", err)
+	}
+
+	// Fallback to the verification_uri if the IdP doesn't support verification_uri_complete
+	if deviceCode.VerificationURIComplete == "" {
+		deviceCode.VerificationURIComplete = deviceCode.VerificationURI
+	}
+
+	return deviceCode, err
+}
+
+func (d *DeviceAuthorizationFlow) requestToken(info AuthFlowInfo) (TokenRequestResponse, error) {
+	form := url.Values{}
+	form.Add("client_id", d.providerConfig.ClientID)
+	form.Add("grant_type", HostedGrantType)
+	form.Add("device_code", info.DeviceCode)
+
+	req, err := http.NewRequest("POST", d.providerConfig.TokenEndpoint, strings.NewReader(form.Encode()))
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("failed to create request access token: %v", err)
+	}
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+
+	res, err := d.HTTPClient.Do(req)
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("failed to request access token with error: %v", err)
+	}
+
+	defer func() {
+		err := res.Body.Close()
+		if err != nil {
+			return
+		}
+	}()
+
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("failed reading access token response body with error: %v", err)
+	}
+
+	if res.StatusCode > 499 {
+		return TokenRequestResponse{}, fmt.Errorf("access token response returned code: %s", string(body))
+	}
+
+	tokenResponse := TokenRequestResponse{}
+	err = json.Unmarshal(body, &tokenResponse)
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("parsing token response failed with error: %v", err)
+	}
+
+	return tokenResponse, nil
+}
+
+// WaitToken waits user's login and authorize the app. Once the user's authorize
+// it retrieves the access token from Hosted's endpoint and validates it before returning
+func (d *DeviceAuthorizationFlow) WaitToken(ctx context.Context, info AuthFlowInfo) (TokenInfo, error) {
+	interval := time.Duration(info.Interval) * time.Second
+	ticker := time.NewTicker(interval)
+	for {
+		select {
+		case <-ctx.Done():
+			return TokenInfo{}, ctx.Err()
+		case <-ticker.C:
+
+			tokenResponse, err := d.requestToken(info)
+			if err != nil {
+				return TokenInfo{}, fmt.Errorf("parsing token response failed with error: %v", err)
+			}
+
+			if tokenResponse.Error != "" {
+				if tokenResponse.Error == "authorization_pending" {
+					continue
+				} else if tokenResponse.Error == "slow_down" {
+					interval = interval + (3 * time.Second)
+					ticker.Reset(interval)
+					continue
+				}
+
+				return TokenInfo{}, fmt.Errorf(tokenResponse.ErrorDescription)
+			}
+
+			tokenInfo := TokenInfo{
+				AccessToken:  tokenResponse.AccessToken,
+				TokenType:    tokenResponse.TokenType,
+				RefreshToken: tokenResponse.RefreshToken,
+				IDToken:      tokenResponse.IDToken,
+				ExpiresIn:    tokenResponse.ExpiresIn,
+				UseIDToken:   d.providerConfig.UseIDToken,
+			}
+
+			err = isValidAccessToken(tokenInfo.GetTokenToUse(), d.providerConfig.Audience)
+			if err != nil {
+				return TokenInfo{}, fmt.Errorf("validate access token failed with error: %v", err)
+			}
+
+			return tokenInfo, err
+		}
+	}
+}

client/internal/auth/device_flow_test.go

@@ -1,17 +1,17 @@
-package internal
+package auth
 
 import (
 	"context"
 	"fmt"
+	"github.com/golang-jwt/jwt"
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/stretchr/testify/require"
 	"io"
 	"net/http"
 	"net/url"
 	"strings"
 	"testing"
 	"time"
-
-	"github.com/golang-jwt/jwt"
-	"github.com/stretchr/testify/require"
 )
 
 type mockHTTPClient struct {
@@ -53,7 +53,7 @@ func TestHosted_RequestDeviceCode(t *testing.T) {
 		testingErrFunc   require.ErrorAssertionFunc
 		expectedErrorMSG string
 		testingFunc      require.ComparisonAssertionFunc
-		expectedOut      DeviceAuthInfo
+		expectedOut      AuthFlowInfo
 		expectedMSG      string
 		expectPayload    string
 	}
@@ -92,7 +92,7 @@ func TestHosted_RequestDeviceCode(t *testing.T) {
 		testingFunc:      require.EqualValues,
 		expectPayload:    expectPayload,
 	}
-	testCase4Out := DeviceAuthInfo{ExpiresIn: 10}
+	testCase4Out := AuthFlowInfo{ExpiresIn: 10}
 	testCase4 := test{
 		name:           "Got Device Code",
 		inputResBody:   fmt.Sprintf("{\"expires_in\":%d}", testCase4Out.ExpiresIn),
@@ -113,8 +113,8 @@ func TestHosted_RequestDeviceCode(t *testing.T) {
 				err:     testCase.inputReqError,
 			}
 
-			hosted := Hosted{
-				providerConfig: ProviderConfig{
+			deviceFlow := &DeviceAuthorizationFlow{
+				providerConfig: internal.DeviceAuthProviderConfig{
 					Audience:           expectedAudience,
 					ClientID:           expectedClientID,
 					Scope:              expectedScope,
@@ -125,7 +125,7 @@ func TestHosted_RequestDeviceCode(t *testing.T) {
 				HTTPClient: &httpClient,
 			}
 
-			authInfo, err := hosted.RequestDeviceCode(context.TODO())
+			authInfo, err := deviceFlow.RequestAuthInfo(context.TODO())
 			testCase.testingErrFunc(t, err, testCase.expectedErrorMSG)
 
 			require.EqualValues(t, expectPayload, httpClient.reqBody, "payload should match")
@@ -145,7 +145,7 @@ func TestHosted_WaitToken(t *testing.T) {
 		inputMaxReqs      int
 		inputCountResBody string
 		inputTimeout      time.Duration
-		inputInfo         DeviceAuthInfo
+		inputInfo         AuthFlowInfo
 		inputAudience     string
 		testingErrFunc    require.ErrorAssertionFunc
 		expectedErrorMSG  string
@@ -155,7 +155,7 @@ func TestHosted_WaitToken(t *testing.T) {
 		expectPayload     string
 	}
 
-	defaultInfo := DeviceAuthInfo{
+	defaultInfo := AuthFlowInfo{
 		DeviceCode: "test",
 		ExpiresIn:  10,
 		Interval:   1,
@@ -278,8 +278,8 @@ func TestHosted_WaitToken(t *testing.T) {
 				countResBody: testCase.inputCountResBody,
 			}
 
-			hosted := Hosted{
-				providerConfig: ProviderConfig{
+			deviceFlow := DeviceAuthorizationFlow{
+				providerConfig: internal.DeviceAuthProviderConfig{
 					Audience:           testCase.inputAudience,
 					ClientID:           clientID,
 					TokenEndpoint:      "test.hosted.com/token",
@@ -287,11 +287,12 @@ func TestHosted_WaitToken(t *testing.T) {
 					Scope:              "openid",
 					UseIDToken:         false,
 				},
-				HTTPClient: &httpClient}
+				HTTPClient: &httpClient,
+			}
 
 			ctx, cancel := context.WithTimeout(context.TODO(), testCase.inputTimeout)
 			defer cancel()
-			tokenInfo, err := hosted.WaitToken(ctx, testCase.inputInfo)
+			tokenInfo, err := deviceFlow.WaitToken(ctx, testCase.inputInfo)
 			testCase.testingErrFunc(t, err, testCase.expectedErrorMSG)
 
 			require.EqualValues(t, testCase.expectPayload, httpClient.reqBody, "payload should match")

client/internal/auth/oauth.go

@@ -0,0 +1,90 @@
+package auth
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+// OAuthFlow represents an interface for authorization using different OAuth 2.0 flows
+type OAuthFlow interface {
+	RequestAuthInfo(ctx context.Context) (AuthFlowInfo, error)
+	WaitToken(ctx context.Context, info AuthFlowInfo) (TokenInfo, error)
+	GetClientID(ctx context.Context) string
+}
+
+// HTTPClient http client interface for API calls
+type HTTPClient interface {
+	Do(req *http.Request) (*http.Response, error)
+}
+
+// AuthFlowInfo holds information for the OAuth 2.0  authorization flow
+type AuthFlowInfo struct {
+	DeviceCode              string `json:"device_code"`
+	UserCode                string `json:"user_code"`
+	VerificationURI         string `json:"verification_uri"`
+	VerificationURIComplete string `json:"verification_uri_complete"`
+	ExpiresIn               int    `json:"expires_in"`
+	Interval                int    `json:"interval"`
+}
+
+// Claims used when validating the access token
+type Claims struct {
+	Audience interface{} `json:"aud"`
+}
+
+// TokenInfo holds information of issued access token
+type TokenInfo struct {
+	AccessToken  string `json:"access_token"`
+	RefreshToken string `json:"refresh_token"`
+	IDToken      string `json:"id_token"`
+	TokenType    string `json:"token_type"`
+	ExpiresIn    int    `json:"expires_in"`
+	UseIDToken   bool   `json:"-"`
+}
+
+// GetTokenToUse returns either the access or id token based on UseIDToken field
+func (t TokenInfo) GetTokenToUse() string {
+	if t.UseIDToken {
+		return t.IDToken
+	}
+	return t.AccessToken
+}
+
+// NewOAuthFlow initializes and returns the appropriate OAuth flow based on the management configuration.
+func NewOAuthFlow(ctx context.Context, config *internal.Config) (OAuthFlow, error) {
+	log.Debug("getting device authorization flow info")
+
+	// Try to initialize the Device Authorization Flow
+	deviceFlowInfo, err := internal.GetDeviceAuthorizationFlowInfo(ctx, config.PrivateKey, config.ManagementURL)
+	if err == nil {
+		return NewDeviceAuthorizationFlow(deviceFlowInfo.ProviderConfig)
+	}
+
+	log.Debugf("getting device authorization flow info failed with error: %v", err)
+	log.Debugf("falling back to pkce authorization flow info")
+
+	// If Device Authorization Flow failed, try the PKCE Authorization Flow
+	pkceFlowInfo, err := internal.GetPKCEAuthorizationFlowInfo(ctx, config.PrivateKey, config.ManagementURL)
+	if err != nil {
+		s, ok := gstatus.FromError(err)
+		if ok && s.Code() == codes.NotFound {
+			return nil, fmt.Errorf("no SSO provider returned from management. " +
+				"If you are using hosting Netbird see documentation at " +
+				"https://github.com/netbirdio/netbird/tree/main/management for details")
+		} else if ok && s.Code() == codes.Unimplemented {
+			return nil, fmt.Errorf("the management server, %s, does not support SSO providers, "+
+				"please update your server or use Setup Keys to login", config.ManagementURL)
+		} else {
+			return nil, fmt.Errorf("getting pkce authorization flow info failed with error: %v", err)
+		}
+	}
+
+	return NewPKCEAuthorizationFlow(pkceFlowInfo.ProviderConfig)
+}

client/internal/auth/pkce_flow.go

@@ -0,0 +1,238 @@
+package auth
+
+import (
+	"context"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"fmt"
+	"html/template"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/oauth2"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/templates"
+)
+
+var _ OAuthFlow = &PKCEAuthorizationFlow{}
+
+const (
+	queryState                = "state"
+	queryCode                 = "code"
+	defaultPKCETimeoutSeconds = 300
+)
+
+// PKCEAuthorizationFlow implements the OAuthFlow interface for
+// the Authorization Code Flow with PKCE.
+type PKCEAuthorizationFlow struct {
+	providerConfig internal.PKCEAuthProviderConfig
+	state          string
+	codeVerifier   string
+	oAuthConfig    *oauth2.Config
+}
+
+// NewPKCEAuthorizationFlow returns new PKCE authorization code flow.
+func NewPKCEAuthorizationFlow(config internal.PKCEAuthProviderConfig) (*PKCEAuthorizationFlow, error) {
+	var availableRedirectURL string
+
+	// find the first available redirect URL
+	for _, redirectURL := range config.RedirectURLs {
+		if !isRedirectURLPortUsed(redirectURL) {
+			availableRedirectURL = redirectURL
+			break
+		}
+	}
+
+	if availableRedirectURL == "" {
+		return nil, fmt.Errorf("no available port found from configured redirect URLs: %q", config.RedirectURLs)
+	}
+
+	cfg := &oauth2.Config{
+		ClientID:     config.ClientID,
+		ClientSecret: config.ClientSecret,
+		Endpoint: oauth2.Endpoint{
+			AuthURL:  config.AuthorizationEndpoint,
+			TokenURL: config.TokenEndpoint,
+		},
+		RedirectURL: availableRedirectURL,
+		Scopes:      strings.Split(config.Scope, " "),
+	}
+
+	return &PKCEAuthorizationFlow{
+		providerConfig: config,
+		oAuthConfig:    cfg,
+	}, nil
+}
+
+// GetClientID returns the provider client id
+func (p *PKCEAuthorizationFlow) GetClientID(_ context.Context) string {
+	return p.providerConfig.ClientID
+}
+
+// RequestAuthInfo requests a authorization code login flow information.
+func (p *PKCEAuthorizationFlow) RequestAuthInfo(_ context.Context) (AuthFlowInfo, error) {
+	state, err := randomBytesInHex(24)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("could not generate random state: %v", err)
+	}
+	p.state = state
+
+	codeVerifier, err := randomBytesInHex(64)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("could not create a code verifier: %v", err)
+	}
+	p.codeVerifier = codeVerifier
+
+	codeChallenge := createCodeChallenge(codeVerifier)
+	authURL := p.oAuthConfig.AuthCodeURL(
+		state,
+		oauth2.SetAuthURLParam("code_challenge_method", "S256"),
+		oauth2.SetAuthURLParam("code_challenge", codeChallenge),
+		oauth2.SetAuthURLParam("audience", p.providerConfig.Audience),
+	)
+
+	return AuthFlowInfo{
+		VerificationURIComplete: authURL,
+		ExpiresIn:               defaultPKCETimeoutSeconds,
+	}, nil
+}
+
+// WaitToken waits for the OAuth token in the PKCE Authorization Flow.
+// It starts an HTTP server to receive the OAuth token callback and waits for the token or an error.
+// Once the token is received, it is converted to TokenInfo and validated before returning.
+func (p *PKCEAuthorizationFlow) WaitToken(ctx context.Context, _ AuthFlowInfo) (TokenInfo, error) {
+	tokenChan := make(chan *oauth2.Token, 1)
+	errChan := make(chan error, 1)
+
+	go p.startServer(tokenChan, errChan)
+
+	select {
+	case <-ctx.Done():
+		return TokenInfo{}, ctx.Err()
+	case token := <-tokenChan:
+		return p.handleOAuthToken(token)
+	case err := <-errChan:
+		return TokenInfo{}, err
+	}
+}
+
+func (p *PKCEAuthorizationFlow) startServer(tokenChan chan<- *oauth2.Token, errChan chan<- error) {
+	parsedURL, err := url.Parse(p.oAuthConfig.RedirectURL)
+	if err != nil {
+		errChan <- fmt.Errorf("failed to parse redirect URL: %v", err)
+		return
+	}
+	port := parsedURL.Port()
+
+	server := http.Server{Addr: fmt.Sprintf(":%s", port)}
+	defer func() {
+		if err := server.Shutdown(context.Background()); err != nil {
+			log.Errorf("error while shutting down pkce flow server: %v", err)
+		}
+	}()
+
+	http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
+		tokenValidatorFunc := func() (*oauth2.Token, error) {
+			query := req.URL.Query()
+
+			state := query.Get(queryState)
+			// Prevent timing attacks on state
+			if subtle.ConstantTimeCompare([]byte(p.state), []byte(state)) == 0 {
+				return nil, fmt.Errorf("invalid state")
+			}
+
+			code := query.Get(queryCode)
+			if code == "" {
+				return nil, fmt.Errorf("missing code")
+			}
+
+			return p.oAuthConfig.Exchange(
+				req.Context(),
+				code,
+				oauth2.SetAuthURLParam("code_verifier", p.codeVerifier),
+			)
+		}
+
+		token, err := tokenValidatorFunc()
+		if err != nil {
+			errChan <- fmt.Errorf("PKCE authorization flow failed: %v", err)
+			renderPKCEFlowTmpl(w, err)
+		}
+
+		tokenChan <- token
+		renderPKCEFlowTmpl(w, nil)
+	})
+
+	if err := server.ListenAndServe(); err != nil {
+		errChan <- err
+	}
+}
+
+func (p *PKCEAuthorizationFlow) handleOAuthToken(token *oauth2.Token) (TokenInfo, error) {
+	tokenInfo := TokenInfo{
+		AccessToken:  token.AccessToken,
+		RefreshToken: token.RefreshToken,
+		TokenType:    token.TokenType,
+		ExpiresIn:    token.Expiry.Second(),
+		UseIDToken:   p.providerConfig.UseIDToken,
+	}
+	if idToken, ok := token.Extra("id_token").(string); ok {
+		tokenInfo.IDToken = idToken
+	}
+
+	if err := isValidAccessToken(tokenInfo.GetTokenToUse(), p.providerConfig.Audience); err != nil {
+		return TokenInfo{}, fmt.Errorf("validate access token failed with error: %v", err)
+	}
+
+	return tokenInfo, nil
+}
+
+func createCodeChallenge(codeVerifier string) string {
+	sha2 := sha256.Sum256([]byte(codeVerifier))
+	return base64.RawURLEncoding.EncodeToString(sha2[:])
+}
+
+// isRedirectURLPortUsed checks if the port used in the redirect URL is in use.
+func isRedirectURLPortUsed(redirectURL string) bool {
+	parsedURL, err := url.Parse(redirectURL)
+	if err != nil {
+		log.Errorf("failed to parse redirect URL: %v", err)
+		return true
+	}
+
+	addr := fmt.Sprintf(":%s", parsedURL.Port())
+	conn, err := net.DialTimeout("tcp", addr, 3*time.Second)
+	if err != nil {
+		return false
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf("error while closing the connection: %v", err)
+		}
+	}()
+
+	return true
+}
+
+func renderPKCEFlowTmpl(w http.ResponseWriter, authError error) {
+	tmpl, err := template.New("pkce-auth-flow").Parse(templates.PKCEAuthMsgTmpl)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	data := make(map[string]string)
+	if authError != nil {
+		data["Error"] = authError.Error()
+	}
+
+	if err := tmpl.Execute(w, data); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+}

client/internal/auth/util.go

@@ -0,0 +1,62 @@
+package auth
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io"
+	"reflect"
+	"strings"
+)
+
+func randomBytesInHex(count int) (string, error) {
+	buf := make([]byte, count)
+	_, err := io.ReadFull(rand.Reader, buf)
+	if err != nil {
+		return "", fmt.Errorf("could not generate %d random bytes: %v", count, err)
+	}
+
+	return hex.EncodeToString(buf), nil
+}
+
+// isValidAccessToken is a simple validation of the access token
+func isValidAccessToken(token string, audience string) error {
+	if token == "" {
+		return fmt.Errorf("token received is empty")
+	}
+
+	encodedClaims := strings.Split(token, ".")[1]
+	claimsString, err := base64.RawURLEncoding.DecodeString(encodedClaims)
+	if err != nil {
+		return err
+	}
+
+	claims := Claims{}
+	err = json.Unmarshal(claimsString, &claims)
+	if err != nil {
+		return err
+	}
+
+	if claims.Audience == nil {
+		return fmt.Errorf("required token field audience is absent")
+	}
+
+	// Audience claim of JWT can be a string or an array of strings
+	typ := reflect.TypeOf(claims.Audience)
+	switch typ.Kind() {
+	case reflect.String:
+		if claims.Audience == audience {
+			return nil
+		}
+	case reflect.Slice:
+		for _, aud := range claims.Audience.([]interface{}) {
+			if audience == aud {
+				return nil
+			}
+		}
+	}
+
+	return fmt.Errorf("invalid JWT token audience field")
+}

client/internal/device_auth.go

@@ -16,11 +16,11 @@ import (
 // DeviceAuthorizationFlow represents Device Authorization Flow information
 type DeviceAuthorizationFlow struct {
 	Provider       string
-	ProviderConfig ProviderConfig
+	ProviderConfig DeviceAuthProviderConfig
 }
 
-// ProviderConfig has all attributes needed to initiate a device authorization flow
-type ProviderConfig struct {
+// DeviceAuthProviderConfig has all attributes needed to initiate a device authorization flow
+type DeviceAuthProviderConfig struct {
 	// ClientID An IDP application client id
 	ClientID string
 	// ClientSecret An IDP application client secret
@@ -88,7 +88,7 @@ func GetDeviceAuthorizationFlowInfo(ctx context.Context, privateKey string, mgmU
 	deviceAuthorizationFlow := DeviceAuthorizationFlow{
 		Provider: protoDeviceAuthorizationFlow.Provider.String(),
 
-		ProviderConfig: ProviderConfig{
+		ProviderConfig: DeviceAuthProviderConfig{
 			Audience:           protoDeviceAuthorizationFlow.GetProviderConfig().GetAudience(),
 			ClientID:           protoDeviceAuthorizationFlow.GetProviderConfig().GetClientID(),
 			ClientSecret:       protoDeviceAuthorizationFlow.GetProviderConfig().GetClientSecret(),
@@ -105,7 +105,7 @@ func GetDeviceAuthorizationFlowInfo(ctx context.Context, privateKey string, mgmU
 		deviceAuthorizationFlow.ProviderConfig.Scope = "openid"
 	}
 
-	err = isProviderConfigValid(deviceAuthorizationFlow.ProviderConfig)
+	err = isDeviceAuthProviderConfigValid(deviceAuthorizationFlow.ProviderConfig)
 	if err != nil {
 		return DeviceAuthorizationFlow{}, err
 	}
@@ -113,7 +113,7 @@ func GetDeviceAuthorizationFlowInfo(ctx context.Context, privateKey string, mgmU
 	return deviceAuthorizationFlow, nil
 }
 
-func isProviderConfigValid(config ProviderConfig) error {
+func isDeviceAuthProviderConfigValid(config DeviceAuthProviderConfig) error {
 	errorMSGFormat := "invalid provider configuration received from management: %s value is empty. Contact your NetBird administrator"
 	if config.Audience == "" {
 		return fmt.Errorf(errorMSGFormat, "Audience")

client/internal/engine.go

@@ -20,8 +20,8 @@ import (
 	"github.com/netbirdio/netbird/client/internal/acl"
 	"github.com/netbirdio/netbird/client/internal/dns"
 	"github.com/netbirdio/netbird/client/internal/peer"
-	"github.com/netbirdio/netbird/client/internal/proxy"
 	"github.com/netbirdio/netbird/client/internal/routemanager"
+	"github.com/netbirdio/netbird/client/internal/wgproxy"
 	nbssh "github.com/netbirdio/netbird/client/ssh"
 	nbdns "github.com/netbirdio/netbird/dns"
 	"github.com/netbirdio/netbird/iface"
@@ -101,7 +101,8 @@ type Engine struct {
 
 	ctx context.Context
 
-	wgInterface *iface.WGIface
+	wgInterface    *iface.WGIface
+	wgProxyFactory *wgproxy.Factory
 
 	udpMux     *bind.UniversalUDPMuxDefault
 	udpMuxConn io.Closer
@@ -132,6 +133,7 @@ func NewEngine(
 	signalClient signal.Client, mgmClient mgm.Client,
 	config *EngineConfig, mobileDep MobileDependency, statusRecorder *peer.Status,
 ) *Engine {
+
 	return &Engine{
 		ctx:            ctx,
 		cancel:         cancel,
@@ -146,6 +148,7 @@ func NewEngine(
 		networkSerial:  0,
 		sshServerFunc:  nbssh.DefaultSSHServer,
 		statusRecorder: statusRecorder,
+		wgProxyFactory: wgproxy.NewFactory(config.WgPort),
 	}
 }
 
@@ -282,7 +285,7 @@ func (e *Engine) modifyPeers(peersUpdate []*mgmProto.RemotePeerConfig) error {
 	for _, p := range peersUpdate {
 		peerPubKey := p.GetWgPubKey()
 		if peerConn, ok := e.peerConns[peerPubKey]; ok {
-			if peerConn.GetConf().ProxyConfig.AllowedIps != strings.Join(p.AllowedIps, ",") {
+			if peerConn.WgConfig().AllowedIps != strings.Join(p.AllowedIps, ",") {
 				modified = append(modified, p)
 				continue
 			}
@@ -795,9 +798,7 @@ func (e *Engine) connWorker(conn *peer.Conn, peerKey string) {
 
 		// we might have received new STUN and TURN servers meanwhile, so update them
 		e.syncMsgMux.Lock()
-		conf := conn.GetConf()
-		conf.StunTurn = append(e.STUNs, e.TURNs...)
-		conn.UpdateConf(conf)
+		conn.UpdateStunTurn(append(e.STUNs, e.TURNs...))
 		e.syncMsgMux.Unlock()
 
 		err := conn.Open()
@@ -826,9 +827,9 @@ func (e *Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, e
 	stunTurn = append(stunTurn, e.STUNs...)
 	stunTurn = append(stunTurn, e.TURNs...)
 
-	proxyConfig := proxy.Config{
+	wgConfig := peer.WgConfig{
 		RemoteKey:    pubKey,
-		WgListenAddr: fmt.Sprintf("127.0.0.1:%d", e.config.WgPort),
+		WgListenPort: e.config.WgPort,
 		WgInterface:  e.wgInterface,
 		AllowedIps:   allowedIPs,
 		PreSharedKey: e.config.PreSharedKey,
@@ -845,13 +846,13 @@ func (e *Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, e
 		Timeout:              timeout,
 		UDPMux:               e.udpMux.UDPMuxDefault,
 		UDPMuxSrflx:          e.udpMux,
-		ProxyConfig:          proxyConfig,
+		WgConfig:             wgConfig,
 		LocalWgPort:          e.config.WgPort,
 		NATExternalIPs:       e.parseNATExternalIPMappings(),
 		UserspaceBind:        e.wgInterface.IsUserspaceBind(),
 	}
 
-	peerConn, err := peer.NewConn(config, e.statusRecorder, e.mobileDep.TunAdapter, e.mobileDep.IFaceDiscover)
+	peerConn, err := peer.NewConn(config, e.statusRecorder, e.wgProxyFactory, e.mobileDep.TunAdapter, e.mobileDep.IFaceDiscover)
 	if err != nil {
 		return nil, err
 	}
@@ -1008,6 +1009,10 @@ func (e *Engine) parseNATExternalIPMappings() []string {
 }
 
 func (e *Engine) close() {
+	if err := e.wgProxyFactory.Free(); err != nil {
+		log.Errorf("failed closing ebpf proxy: %s", err)
+	}
+
 	log.Debugf("removing Netbird interface %s", e.config.WgIfaceName)
 	if e.wgInterface != nil {
 		if err := e.wgInterface.Close(); err != nil {

client/internal/engine_test.go

@@ -367,9 +367,9 @@ func TestEngine_UpdateNetworkMap(t *testing.T) {
 					t.Errorf("expecting Engine.peerConns to contain peer %s", p)
 				}
 				expectedAllowedIPs := strings.Join(p.AllowedIps, ",")
-				if conn.GetConf().ProxyConfig.AllowedIps != expectedAllowedIPs {
+				if conn.WgConfig().AllowedIps != expectedAllowedIPs {
 					t.Errorf("expecting peer %s to have AllowedIPs= %s, got %s", p.GetWgPubKey(),
-						expectedAllowedIPs, conn.GetConf().ProxyConfig.AllowedIps)
+						expectedAllowedIPs, conn.WgConfig().AllowedIps)
 				}
 			}
 		})

client/internal/oauth.go

@@ -1,286 +0,0 @@
-package internal
-
-import (
-	"context"
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"io"
-	"net/http"
-	"net/url"
-	"reflect"
-	"strings"
-	"time"
-)
-
-// OAuthClient is a OAuth client interface for various idp providers
-type OAuthClient interface {
-	RequestDeviceCode(ctx context.Context) (DeviceAuthInfo, error)
-	WaitToken(ctx context.Context, info DeviceAuthInfo) (TokenInfo, error)
-	GetClientID(ctx context.Context) string
-}
-
-// HTTPClient http client interface for API calls
-type HTTPClient interface {
-	Do(req *http.Request) (*http.Response, error)
-}
-
-// DeviceAuthInfo holds information for the OAuth device login flow
-type DeviceAuthInfo struct {
-	DeviceCode              string `json:"device_code"`
-	UserCode                string `json:"user_code"`
-	VerificationURI         string `json:"verification_uri"`
-	VerificationURIComplete string `json:"verification_uri_complete"`
-	ExpiresIn               int    `json:"expires_in"`
-	Interval                int    `json:"interval"`
-}
-
-// HostedGrantType grant type for device flow on Hosted
-const (
-	HostedGrantType    = "urn:ietf:params:oauth:grant-type:device_code"
-	HostedRefreshGrant = "refresh_token"
-)
-
-// Hosted client
-type Hosted struct {
-	providerConfig ProviderConfig
-
-	HTTPClient HTTPClient
-}
-
-// RequestDeviceCodePayload used for request device code payload for auth0
-type RequestDeviceCodePayload struct {
-	Audience string `json:"audience"`
-	ClientID string `json:"client_id"`
-	Scope    string `json:"scope"`
-}
-
-// TokenRequestPayload used for requesting the auth0 token
-type TokenRequestPayload struct {
-	GrantType    string `json:"grant_type"`
-	DeviceCode   string `json:"device_code,omitempty"`
-	ClientID     string `json:"client_id"`
-	RefreshToken string `json:"refresh_token,omitempty"`
-}
-
-// TokenRequestResponse used for parsing Hosted token's response
-type TokenRequestResponse struct {
-	Error            string `json:"error"`
-	ErrorDescription string `json:"error_description"`
-	TokenInfo
-}
-
-// Claims used when validating the access token
-type Claims struct {
-	Audience interface{} `json:"aud"`
-}
-
-// TokenInfo holds information of issued access token
-type TokenInfo struct {
-	AccessToken  string `json:"access_token"`
-	RefreshToken string `json:"refresh_token"`
-	IDToken      string `json:"id_token"`
-	TokenType    string `json:"token_type"`
-	ExpiresIn    int    `json:"expires_in"`
-	UseIDToken   bool   `json:"-"`
-}
-
-// GetTokenToUse returns either the access or id token based on UseIDToken field
-func (t TokenInfo) GetTokenToUse() string {
-	if t.UseIDToken {
-		return t.IDToken
-	}
-	return t.AccessToken
-}
-
-// NewHostedDeviceFlow returns an Hosted OAuth client
-func NewHostedDeviceFlow(config ProviderConfig) *Hosted {
-	httpTransport := http.DefaultTransport.(*http.Transport).Clone()
-	httpTransport.MaxIdleConns = 5
-
-	httpClient := &http.Client{
-		Timeout:   10 * time.Second,
-		Transport: httpTransport,
-	}
-
-	return &Hosted{
-		providerConfig: config,
-		HTTPClient:     httpClient,
-	}
-}
-
-// GetClientID returns the provider client id
-func (h *Hosted) GetClientID(ctx context.Context) string {
-	return h.providerConfig.ClientID
-}
-
-// RequestDeviceCode requests a device code login flow information from Hosted
-func (h *Hosted) RequestDeviceCode(ctx context.Context) (DeviceAuthInfo, error) {
-	form := url.Values{}
-	form.Add("client_id", h.providerConfig.ClientID)
-	form.Add("audience", h.providerConfig.Audience)
-	form.Add("scope", h.providerConfig.Scope)
-	req, err := http.NewRequest("POST", h.providerConfig.DeviceAuthEndpoint,
-		strings.NewReader(form.Encode()))
-	if err != nil {
-		return DeviceAuthInfo{}, fmt.Errorf("creating request failed with error: %v", err)
-	}
-	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
-
-	res, err := h.HTTPClient.Do(req)
-	if err != nil {
-		return DeviceAuthInfo{}, fmt.Errorf("doing request failed with error: %v", err)
-	}
-
-	defer res.Body.Close()
-	body, err := io.ReadAll(res.Body)
-	if err != nil {
-		return DeviceAuthInfo{}, fmt.Errorf("reading body failed with error: %v", err)
-	}
-
-	if res.StatusCode != 200 {
-		return DeviceAuthInfo{}, fmt.Errorf("request device code returned status %d error: %s", res.StatusCode, string(body))
-	}
-
-	deviceCode := DeviceAuthInfo{}
-	err = json.Unmarshal(body, &deviceCode)
-	if err != nil {
-		return DeviceAuthInfo{}, fmt.Errorf("unmarshaling response failed with error: %v", err)
-	}
-
-	// Fallback to the verification_uri if the IdP doesn't support verification_uri_complete
-	if deviceCode.VerificationURIComplete == "" {
-		deviceCode.VerificationURIComplete = deviceCode.VerificationURI
-	}
-
-	return deviceCode, err
-}
-
-func (h *Hosted) requestToken(info DeviceAuthInfo) (TokenRequestResponse, error) {
-	form := url.Values{}
-	form.Add("client_id", h.providerConfig.ClientID)
-	form.Add("grant_type", HostedGrantType)
-	form.Add("device_code", info.DeviceCode)
-	req, err := http.NewRequest("POST", h.providerConfig.TokenEndpoint, strings.NewReader(form.Encode()))
-	if err != nil {
-		return TokenRequestResponse{}, fmt.Errorf("failed to create request access token: %v", err)
-	}
-
-	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
-
-	res, err := h.HTTPClient.Do(req)
-	if err != nil {
-		return TokenRequestResponse{}, fmt.Errorf("failed to request access token with error: %v", err)
-	}
-
-	defer func() {
-		err := res.Body.Close()
-		if err != nil {
-			return
-		}
-	}()
-
-	body, err := io.ReadAll(res.Body)
-	if err != nil {
-		return TokenRequestResponse{}, fmt.Errorf("failed reading access token response body with error: %v", err)
-	}
-
-	if res.StatusCode > 499 {
-		return TokenRequestResponse{}, fmt.Errorf("access token response returned code: %s", string(body))
-	}
-
-	tokenResponse := TokenRequestResponse{}
-	err = json.Unmarshal(body, &tokenResponse)
-	if err != nil {
-		return TokenRequestResponse{}, fmt.Errorf("parsing token response failed with error: %v", err)
-	}
-
-	return tokenResponse, nil
-}
-
-// WaitToken waits user's login and authorize the app. Once the user's authorize
-// it retrieves the access token from Hosted's endpoint and validates it before returning
-func (h *Hosted) WaitToken(ctx context.Context, info DeviceAuthInfo) (TokenInfo, error) {
-	interval := time.Duration(info.Interval) * time.Second
-	ticker := time.NewTicker(interval)
-	for {
-		select {
-		case <-ctx.Done():
-			return TokenInfo{}, ctx.Err()
-		case <-ticker.C:
-
-			tokenResponse, err := h.requestToken(info)
-			if err != nil {
-				return TokenInfo{}, fmt.Errorf("parsing token response failed with error: %v", err)
-			}
-
-			if tokenResponse.Error != "" {
-				if tokenResponse.Error == "authorization_pending" {
-					continue
-				} else if tokenResponse.Error == "slow_down" {
-					interval = interval + (3 * time.Second)
-					ticker.Reset(interval)
-					continue
-				}
-
-				return TokenInfo{}, fmt.Errorf(tokenResponse.ErrorDescription)
-			}
-
-			tokenInfo := TokenInfo{
-				AccessToken:  tokenResponse.AccessToken,
-				TokenType:    tokenResponse.TokenType,
-				RefreshToken: tokenResponse.RefreshToken,
-				IDToken:      tokenResponse.IDToken,
-				ExpiresIn:    tokenResponse.ExpiresIn,
-				UseIDToken:   h.providerConfig.UseIDToken,
-			}
-
-			err = isValidAccessToken(tokenInfo.GetTokenToUse(), h.providerConfig.Audience)
-			if err != nil {
-				return TokenInfo{}, fmt.Errorf("validate access token failed with error: %v", err)
-			}
-
-			return tokenInfo, err
-		}
-	}
-}
-
-// isValidAccessToken is a simple validation of the access token
-func isValidAccessToken(token string, audience string) error {
-	if token == "" {
-		return fmt.Errorf("token received is empty")
-	}
-
-	encodedClaims := strings.Split(token, ".")[1]
-	claimsString, err := base64.RawURLEncoding.DecodeString(encodedClaims)
-	if err != nil {
-		return err
-	}
-
-	claims := Claims{}
-	err = json.Unmarshal(claimsString, &claims)
-	if err != nil {
-		return err
-	}
-
-	if claims.Audience == nil {
-		return fmt.Errorf("required token field audience is absent")
-	}
-
-	// Audience claim of JWT can be a string or an array of strings
-	typ := reflect.TypeOf(claims.Audience)
-	switch typ.Kind() {
-	case reflect.String:
-		if claims.Audience == audience {
-			return nil
-		}
-	case reflect.Slice:
-		for _, aud := range claims.Audience.([]interface{}) {
-			if audience == aud {
-				return nil
-			}
-		}
-	}
-
-	return fmt.Errorf("invalid JWT token audience field")
-}

client/internal/peer/conn.go

@@ -10,9 +10,10 @@ import (
 
 	"github.com/pion/ice/v2"
 	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
-	"github.com/netbirdio/netbird/client/internal/proxy"
 	"github.com/netbirdio/netbird/client/internal/stdnet"
+	"github.com/netbirdio/netbird/client/internal/wgproxy"
 	"github.com/netbirdio/netbird/iface"
 	"github.com/netbirdio/netbird/iface/bind"
 	signal "github.com/netbirdio/netbird/signal/client"
@@ -23,8 +24,18 @@ import (
 const (
 	iceKeepAliveDefault           = 4 * time.Second
 	iceDisconnectedTimeoutDefault = 6 * time.Second
+
+	defaultWgKeepAlive = 25 * time.Second
 )
 
+type WgConfig struct {
+	WgListenPort int
+	RemoteKey    string
+	WgInterface  *iface.WGIface
+	AllowedIps   string
+	PreSharedKey *wgtypes.Key
+}
+
 // ConnConfig is a peer Connection configuration
 type ConnConfig struct {
 
@@ -43,7 +54,7 @@ type ConnConfig struct {
 
 	Timeout time.Duration
 
-	ProxyConfig proxy.Config
+	WgConfig WgConfig
 
 	UDPMux      ice.UDPMux
 	UDPMuxSrflx ice.UniversalUDPMux
@@ -98,7 +109,9 @@ type Conn struct {
 
 	statusRecorder *Status
 
-	proxy        proxy.Proxy
+	wgProxyFactory *wgproxy.Factory
+	wgProxy        wgproxy.Proxy
+
 	remoteModeCh chan ModeMessage
 	meta         meta
 
@@ -122,14 +135,19 @@ func (conn *Conn) GetConf() ConnConfig {
 	return conn.config
 }
 
-// UpdateConf updates the connection config
-func (conn *Conn) UpdateConf(conf ConnConfig) {
-	conn.config = conf
+// WgConfig returns the WireGuard config
+func (conn *Conn) WgConfig() WgConfig {
+	return conn.config.WgConfig
+}
+
+// UpdateStunTurn update the turn and stun addresses
+func (conn *Conn) UpdateStunTurn(turnStun []*ice.URL) {
+	conn.config.StunTurn = turnStun
 }
 
 // NewConn creates a new not opened Conn to the remote peer.
 // To establish a connection run Conn.Open
-func NewConn(config ConnConfig, statusRecorder *Status, adapter iface.TunAdapter, iFaceDiscover stdnet.ExternalIFaceDiscover) (*Conn, error) {
+func NewConn(config ConnConfig, statusRecorder *Status, wgProxyFactory *wgproxy.Factory, adapter iface.TunAdapter, iFaceDiscover stdnet.ExternalIFaceDiscover) (*Conn, error) {
 	return &Conn{
 		config:         config,
 		mu:             sync.Mutex{},
@@ -139,6 +157,7 @@ func NewConn(config ConnConfig, statusRecorder *Status, adapter iface.TunAdapter
 		remoteAnswerCh: make(chan OfferAnswer),
 		statusRecorder: statusRecorder,
 		remoteModeCh:   make(chan ModeMessage, 1),
+		wgProxyFactory: wgProxyFactory,
 		adapter:        adapter,
 		iFaceDiscover:  iFaceDiscover,
 	}, nil
@@ -215,12 +234,12 @@ func (conn *Conn) candidateTypes() []ice.CandidateType {
 func (conn *Conn) Open() error {
 	log.Debugf("trying to connect to peer %s", conn.config.Key)
 
-	peerState := State{PubKey: conn.config.Key}
-
-	peerState.IP = strings.Split(conn.config.ProxyConfig.AllowedIps, "/")[0]
-	peerState.ConnStatusUpdate = time.Now()
-	peerState.ConnStatus = conn.status
-
+	peerState := State{
+		PubKey:           conn.config.Key,
+		IP:               strings.Split(conn.config.WgConfig.AllowedIps, "/")[0],
+		ConnStatusUpdate: time.Now(),
+		ConnStatus:       conn.status,
+	}
 	err := conn.statusRecorder.UpdatePeerState(peerState)
 	if err != nil {
 		log.Warnf("erro while updating the state of peer %s,err: %v", conn.config.Key, err)
@@ -275,10 +294,11 @@ func (conn *Conn) Open() error {
 	defer conn.notifyDisconnected()
 	conn.mu.Unlock()
 
-	peerState = State{PubKey: conn.config.Key}
-
-	peerState.ConnStatus = conn.status
-	peerState.ConnStatusUpdate = time.Now()
+	peerState = State{
+		PubKey:           conn.config.Key,
+		ConnStatus:       conn.status,
+		ConnStatusUpdate: time.Now(),
+	}
 	err = conn.statusRecorder.UpdatePeerState(peerState)
 	if err != nil {
 		log.Warnf("erro while updating the state of peer %s,err: %v", conn.config.Key, err)
@@ -309,19 +329,12 @@ func (conn *Conn) Open() error {
 		remoteWgPort = remoteOfferAnswer.WgListenPort
 	}
 	// the ice connection has been established successfully so we are ready to start the proxy
-	err = conn.startProxy(remoteConn, remoteWgPort)
+	remoteAddr, err := conn.configureConnection(remoteConn, remoteWgPort)
 	if err != nil {
 		return err
 	}
 
-	if conn.proxy.Type() == proxy.TypeDirectNoProxy {
-		host, _, _ := net.SplitHostPort(remoteConn.LocalAddr().String())
-		rhost, _, _ := net.SplitHostPort(remoteConn.RemoteAddr().String())
-		// direct Wireguard connection
-		log.Infof("directly connected to peer %s [laddr <-> raddr] [%s:%d <-> %s:%d]", conn.config.Key, host, conn.config.LocalWgPort, rhost, remoteWgPort)
-	} else {
-		log.Infof("connected to peer %s [laddr <-> raddr] [%s <-> %s]", conn.config.Key, remoteConn.LocalAddr().String(), remoteConn.RemoteAddr().String())
-	}
+	log.Infof("connected to peer %s, endpoint address: %s", conn.config.Key, remoteAddr.String())
 
 	// wait until connection disconnected or has been closed externally (upper layer, e.g. engine)
 	select {
@@ -338,54 +351,60 @@ func isRelayCandidate(candidate ice.Candidate) bool {
 	return candidate.Type() == ice.CandidateTypeRelay
 }
 
-// startProxy starts proxying traffic from/to local Wireguard and sets connection status to StatusConnected
-func (conn *Conn) startProxy(remoteConn net.Conn, remoteWgPort int) error {
+// configureConnection starts proxying traffic from/to local Wireguard and sets connection status to StatusConnected
+func (conn *Conn) configureConnection(remoteConn net.Conn, remoteWgPort int) (net.Addr, error) {
 	conn.mu.Lock()
 	defer conn.mu.Unlock()
 
-	var pair *ice.CandidatePair
 	pair, err := conn.agent.GetSelectedCandidatePair()
 	if err != nil {
-		return err
+		return nil, err
 	}
 
-	peerState := State{PubKey: conn.config.Key}
-	p := conn.getProxy(pair, remoteWgPort)
-	conn.proxy = p
-	err = p.Start(remoteConn)
+	var endpoint net.Addr
+	if isRelayCandidate(pair.Local) {
+		log.Debugf("setup relay connection")
+		conn.wgProxy = conn.wgProxyFactory.GetProxy()
+		endpoint, err = conn.wgProxy.AddTurnConn(remoteConn)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		// To support old version's with direct mode we attempt to punch an additional role with the remote wireguard port
+		go conn.punchRemoteWGPort(pair, remoteWgPort)
+		endpoint = remoteConn.RemoteAddr()
+	}
+
+	endpointUdpAddr, _ := net.ResolveUDPAddr(endpoint.Network(), endpoint.String())
+
+	err = conn.config.WgConfig.WgInterface.UpdatePeer(conn.config.WgConfig.RemoteKey, conn.config.WgConfig.AllowedIps, defaultWgKeepAlive, endpointUdpAddr, conn.config.WgConfig.PreSharedKey)
 	if err != nil {
-		return err
+		if conn.wgProxy != nil {
+			_ = conn.wgProxy.CloseConn()
+		}
+		return nil, err
 	}
 
 	conn.status = StatusConnected
 
-	peerState.ConnStatus = conn.status
-	peerState.ConnStatusUpdate = time.Now()
-	peerState.LocalIceCandidateType = pair.Local.Type().String()
-	peerState.RemoteIceCandidateType = pair.Remote.Type().String()
+	peerState := State{
+		PubKey:                 conn.config.Key,
+		ConnStatus:             conn.status,
+		ConnStatusUpdate:       time.Now(),
+		LocalIceCandidateType:  pair.Local.Type().String(),
+		RemoteIceCandidateType: pair.Remote.Type().String(),
+		Direct:                 !isRelayCandidate(pair.Local),
+	}
 	if pair.Local.Type() == ice.CandidateTypeRelay || pair.Remote.Type() == ice.CandidateTypeRelay {
 		peerState.Relayed = true
 	}
-	peerState.Direct = p.Type() == proxy.TypeDirectNoProxy || p.Type() == proxy.TypeNoProxy
 
 	err = conn.statusRecorder.UpdatePeerState(peerState)
 	if err != nil {
 		log.Warnf("unable to save peer's state, got error: %v", err)
 	}
 
-	return nil
-}
-
-// todo rename this method and the proxy package to something more appropriate
-func (conn *Conn) getProxy(pair *ice.CandidatePair, remoteWgPort int) proxy.Proxy {
-	if isRelayCandidate(pair.Local) {
-		return proxy.NewWireGuardProxy(conn.config.ProxyConfig)
-	}
-
-	// To support old version's with direct mode we attempt to punch an additional role with the remote wireguard port
-	go conn.punchRemoteWGPort(pair, remoteWgPort)
-
-	return proxy.NewNoProxy(conn.config.ProxyConfig)
+	return endpoint, nil
 }
 
 func (conn *Conn) punchRemoteWGPort(pair *ice.CandidatePair, remoteWgPort int) {
@@ -414,22 +433,22 @@ func (conn *Conn) cleanup() error {
 	conn.mu.Lock()
 	defer conn.mu.Unlock()
 
+	var err1, err2, err3 error
 	if conn.agent != nil {
-		err := conn.agent.Close()
-		if err != nil {
-			return err
+		err1 = conn.agent.Close()
+		if err1 == nil {
+			conn.agent = nil
 		}
-		conn.agent = nil
 	}
 
-	if conn.proxy != nil {
-		err := conn.proxy.Close()
-		if err != nil {
-			return err
-		}
-		conn.proxy = nil
+	if conn.wgProxy != nil {
+		err2 = conn.wgProxy.CloseConn()
+		conn.wgProxy = nil
 	}
 
+	// todo: is it problem if we try to remove a peer what is never existed?
+	err3 = conn.config.WgConfig.WgInterface.RemovePeer(conn.config.WgConfig.RemoteKey)
+
 	if conn.notifyDisconnected != nil {
 		conn.notifyDisconnected()
 		conn.notifyDisconnected = nil
@@ -437,10 +456,11 @@ func (conn *Conn) cleanup() error {
 
 	conn.status = StatusDisconnected
 
-	peerState := State{PubKey: conn.config.Key}
-	peerState.ConnStatus = conn.status
-	peerState.ConnStatusUpdate = time.Now()
-
+	peerState := State{
+		PubKey:           conn.config.Key,
+		ConnStatus:       conn.status,
+		ConnStatusUpdate: time.Now(),
+	}
 	err := conn.statusRecorder.UpdatePeerState(peerState)
 	if err != nil {
 		// pretty common error because by that time Engine can already remove the peer and status won't be available.
@@ -449,8 +469,13 @@ func (conn *Conn) cleanup() error {
 	}
 
 	log.Debugf("cleaned up connection to peer %s", conn.config.Key)
-
-	return nil
+	if err1 != nil {
+		return err1
+	}
+	if err2 != nil {
+		return err2
+	}
+	return err3
 }
 
 // SetSignalOffer sets a handler function to be triggered by Conn when a new connection offer has to be signalled to the remote peer

client/internal/peer/conn_test.go

@@ -5,12 +5,11 @@ import (
 	"testing"
 	"time"
 
-	"github.com/netbirdio/netbird/client/internal/stdnet"
-
 	"github.com/magiconair/properties/assert"
 	"github.com/pion/ice/v2"
 
-	"github.com/netbirdio/netbird/client/internal/proxy"
+	"github.com/netbirdio/netbird/client/internal/stdnet"
+	"github.com/netbirdio/netbird/client/internal/wgproxy"
 	"github.com/netbirdio/netbird/iface"
 )
 
@@ -20,7 +19,6 @@ var connConf = ConnConfig{
 	StunTurn:           []*ice.URL{},
 	InterfaceBlackList: nil,
 	Timeout:            time.Second,
-	ProxyConfig:        proxy.Config{},
 	LocalWgPort:        51820,
 }
 
@@ -37,7 +35,11 @@ func TestNewConn_interfaceFilter(t *testing.T) {
 }
 
 func TestConn_GetKey(t *testing.T) {
-	conn, err := NewConn(connConf, nil, nil, nil)
+	wgProxyFactory := wgproxy.NewFactory(connConf.LocalWgPort)
+	defer func() {
+		_ = wgProxyFactory.Free()
+	}()
+	conn, err := NewConn(connConf, nil, wgProxyFactory, nil, nil)
 	if err != nil {
 		return
 	}
@@ -48,8 +50,11 @@ func TestConn_GetKey(t *testing.T) {
 }
 
 func TestConn_OnRemoteOffer(t *testing.T) {
-
-	conn, err := NewConn(connConf, NewRecorder("https://mgm"), nil, nil)
+	wgProxyFactory := wgproxy.NewFactory(connConf.LocalWgPort)
+	defer func() {
+		_ = wgProxyFactory.Free()
+	}()
+	conn, err := NewConn(connConf, NewRecorder("https://mgm"), wgProxyFactory, nil, nil)
 	if err != nil {
 		return
 	}
@@ -82,8 +87,11 @@ func TestConn_OnRemoteOffer(t *testing.T) {
 }
 
 func TestConn_OnRemoteAnswer(t *testing.T) {
-
-	conn, err := NewConn(connConf, NewRecorder("https://mgm"), nil, nil)
+	wgProxyFactory := wgproxy.NewFactory(connConf.LocalWgPort)
+	defer func() {
+		_ = wgProxyFactory.Free()
+	}()
+	conn, err := NewConn(connConf, NewRecorder("https://mgm"), wgProxyFactory, nil, nil)
 	if err != nil {
 		return
 	}
@@ -115,8 +123,11 @@ func TestConn_OnRemoteAnswer(t *testing.T) {
 	wg.Wait()
 }
 func TestConn_Status(t *testing.T) {
-
-	conn, err := NewConn(connConf, NewRecorder("https://mgm"), nil, nil)
+	wgProxyFactory := wgproxy.NewFactory(connConf.LocalWgPort)
+	defer func() {
+		_ = wgProxyFactory.Free()
+	}()
+	conn, err := NewConn(connConf, NewRecorder("https://mgm"), wgProxyFactory, nil, nil)
 	if err != nil {
 		return
 	}
@@ -142,8 +153,11 @@ func TestConn_Status(t *testing.T) {
 }
 
 func TestConn_Close(t *testing.T) {
-
-	conn, err := NewConn(connConf, NewRecorder("https://mgm"), nil, nil)
+	wgProxyFactory := wgproxy.NewFactory(connConf.LocalWgPort)
+	defer func() {
+		_ = wgProxyFactory.Free()
+	}()
+	conn, err := NewConn(connConf, NewRecorder("https://mgm"), wgProxyFactory, nil, nil)
 	if err != nil {
 		return
 	}

client/internal/pkce_auth.go

@@ -0,0 +1,128 @@
+package internal
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	mgm "github.com/netbirdio/netbird/management/client"
+)
+
+// PKCEAuthorizationFlow represents PKCE Authorization Flow information
+type PKCEAuthorizationFlow struct {
+	ProviderConfig PKCEAuthProviderConfig
+}
+
+// PKCEAuthProviderConfig has all attributes needed to initiate pkce authorization flow
+type PKCEAuthProviderConfig struct {
+	// ClientID An IDP application client id
+	ClientID string
+	// ClientSecret An IDP application client secret
+	ClientSecret string
+	// Audience An Audience for to authorization validation
+	Audience string
+	// TokenEndpoint is the endpoint of an IDP manager where clients can obtain access token
+	TokenEndpoint string
+	// AuthorizationEndpoint is the endpoint of an IDP manager where clients can obtain authorization code
+	AuthorizationEndpoint string
+	// Scopes provides the scopes to be included in the token request
+	Scope string
+	// RedirectURL handles authorization code from IDP manager
+	RedirectURLs []string
+	// UseIDToken indicates if the id token should be used for authentication
+	UseIDToken bool
+}
+
+// GetPKCEAuthorizationFlowInfo initialize a PKCEAuthorizationFlow instance and return with it
+func GetPKCEAuthorizationFlowInfo(ctx context.Context, privateKey string, mgmURL *url.URL) (PKCEAuthorizationFlow, error) {
+	// validate our peer's Wireguard PRIVATE key
+	myPrivateKey, err := wgtypes.ParseKey(privateKey)
+	if err != nil {
+		log.Errorf("failed parsing Wireguard key %s: [%s]", privateKey, err.Error())
+		return PKCEAuthorizationFlow{}, err
+	}
+
+	var mgmTLSEnabled bool
+	if mgmURL.Scheme == "https" {
+		mgmTLSEnabled = true
+	}
+
+	log.Debugf("connecting to Management Service %s", mgmURL.String())
+	mgmClient, err := mgm.NewClient(ctx, mgmURL.Host, myPrivateKey, mgmTLSEnabled)
+	if err != nil {
+		log.Errorf("failed connecting to Management Service %s %v", mgmURL.String(), err)
+		return PKCEAuthorizationFlow{}, err
+	}
+	log.Debugf("connected to the Management service %s", mgmURL.String())
+
+	defer func() {
+		err = mgmClient.Close()
+		if err != nil {
+			log.Warnf("failed to close the Management service client %v", err)
+		}
+	}()
+
+	serverKey, err := mgmClient.GetServerPublicKey()
+	if err != nil {
+		log.Errorf("failed while getting Management Service public key: %v", err)
+		return PKCEAuthorizationFlow{}, err
+	}
+
+	protoPKCEAuthorizationFlow, err := mgmClient.GetPKCEAuthorizationFlow(*serverKey)
+	if err != nil {
+		if s, ok := status.FromError(err); ok && s.Code() == codes.NotFound {
+			log.Warnf("server couldn't find pkce flow, contact admin: %v", err)
+			return PKCEAuthorizationFlow{}, err
+		}
+		log.Errorf("failed to retrieve pkce flow: %v", err)
+		return PKCEAuthorizationFlow{}, err
+	}
+
+	authFlow := PKCEAuthorizationFlow{
+		ProviderConfig: PKCEAuthProviderConfig{
+			Audience:              protoPKCEAuthorizationFlow.GetProviderConfig().GetAudience(),
+			ClientID:              protoPKCEAuthorizationFlow.GetProviderConfig().GetClientID(),
+			ClientSecret:          protoPKCEAuthorizationFlow.GetProviderConfig().GetClientSecret(),
+			TokenEndpoint:         protoPKCEAuthorizationFlow.GetProviderConfig().GetTokenEndpoint(),
+			AuthorizationEndpoint: protoPKCEAuthorizationFlow.GetProviderConfig().GetAuthorizationEndpoint(),
+			Scope:                 protoPKCEAuthorizationFlow.GetProviderConfig().GetScope(),
+			RedirectURLs:          protoPKCEAuthorizationFlow.GetProviderConfig().GetRedirectURLs(),
+			UseIDToken:            protoPKCEAuthorizationFlow.GetProviderConfig().GetUseIDToken(),
+		},
+	}
+
+	err = isPKCEProviderConfigValid(authFlow.ProviderConfig)
+	if err != nil {
+		return PKCEAuthorizationFlow{}, err
+	}
+
+	return authFlow, nil
+}
+
+func isPKCEProviderConfigValid(config PKCEAuthProviderConfig) error {
+	errorMSGFormat := "invalid provider configuration received from management: %s value is empty. Contact your NetBird administrator"
+	if config.Audience == "" {
+		return fmt.Errorf(errorMSGFormat, "Audience")
+	}
+	if config.ClientID == "" {
+		return fmt.Errorf(errorMSGFormat, "Client ID")
+	}
+	if config.TokenEndpoint == "" {
+		return fmt.Errorf(errorMSGFormat, "Token Endpoint")
+	}
+	if config.AuthorizationEndpoint == "" {
+		return fmt.Errorf(errorMSGFormat, "Authorization Auth Endpoint")
+	}
+	if config.Scope == "" {
+		return fmt.Errorf(errorMSGFormat, "PKCE Auth Scopes")
+	}
+	if config.RedirectURLs == nil {
+		return fmt.Errorf(errorMSGFormat, "PKCE Redirect URLs")
+	}
+	return nil
+}

client/internal/proxy/dummy.go

@@ -1,72 +0,0 @@
-package proxy
-
-import (
-	"context"
-	log "github.com/sirupsen/logrus"
-	"net"
-	"time"
-)
-
-// DummyProxy just sends pings to the RemoteKey peer and reads responses
-type DummyProxy struct {
-	conn   net.Conn
-	remote string
-	ctx    context.Context
-	cancel context.CancelFunc
-}
-
-func NewDummyProxy(remote string) *DummyProxy {
-	p := &DummyProxy{remote: remote}
-	p.ctx, p.cancel = context.WithCancel(context.Background())
-	return p
-}
-
-func (p *DummyProxy) Close() error {
-	p.cancel()
-	return nil
-}
-
-func (p *DummyProxy) Start(remoteConn net.Conn) error {
-	p.conn = remoteConn
-	go func() {
-		buf := make([]byte, 1500)
-		for {
-			select {
-			case <-p.ctx.Done():
-				return
-			default:
-				_, err := p.conn.Read(buf)
-				if err != nil {
-					log.Errorf("error while reading RemoteKey %s proxy %v", p.remote, err)
-					return
-				}
-				//log.Debugf("received %s from %s", string(buf[:n]), p.remote)
-			}
-
-		}
-	}()
-
-	go func() {
-		for {
-			select {
-			case <-p.ctx.Done():
-				return
-			default:
-				_, err := p.conn.Write([]byte("hello"))
-				//log.Debugf("sent ping to %s", p.remote)
-				if err != nil {
-					log.Errorf("error while writing to RemoteKey %s proxy %v", p.remote, err)
-					return
-				}
-				time.Sleep(5 * time.Second)
-			}
-		}
-
-	}()
-
-	return nil
-}
-
-func (p *DummyProxy) Type() Type {
-	return TypeDummy
-}

client/internal/proxy/noproxy.go

@@ -1,42 +0,0 @@
-package proxy
-
-import (
-	log "github.com/sirupsen/logrus"
-	"net"
-)
-
-// NoProxy is used just to configure WireGuard without any local proxy in between.
-// Used when the WireGuard interface is userspace and uses bind.ICEBind
-type NoProxy struct {
-	config Config
-}
-
-// NewNoProxy creates a new NoProxy with a provided config
-func NewNoProxy(config Config) *NoProxy {
-	return &NoProxy{config: config}
-}
-
-// Close removes peer from the WireGuard interface
-func (p *NoProxy) Close() error {
-	err := p.config.WgInterface.RemovePeer(p.config.RemoteKey)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-// Start just updates WireGuard peer with the remote address
-func (p *NoProxy) Start(remoteConn net.Conn) error {
-
-	log.Debugf("using NoProxy to connect to peer %s at %s", p.config.RemoteKey, remoteConn.RemoteAddr().String())
-	addr, err := net.ResolveUDPAddr("udp", remoteConn.RemoteAddr().String())
-	if err != nil {
-		return err
-	}
-	return p.config.WgInterface.UpdatePeer(p.config.RemoteKey, p.config.AllowedIps, DefaultWgKeepAlive,
-		addr, p.config.PreSharedKey)
-}
-
-func (p *NoProxy) Type() Type {
-	return TypeNoProxy
-}

client/internal/proxy/proxy.go

@@ -1,35 +0,0 @@
-package proxy
-
-import (
-	"github.com/netbirdio/netbird/iface"
-	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
-	"io"
-	"net"
-	"time"
-)
-
-const DefaultWgKeepAlive = 25 * time.Second
-
-type Type string
-
-const (
-	TypeDirectNoProxy Type = "DirectNoProxy"
-	TypeWireGuard     Type = "WireGuard"
-	TypeDummy         Type = "Dummy"
-	TypeNoProxy       Type = "NoProxy"
-)
-
-type Config struct {
-	WgListenAddr string
-	RemoteKey    string
-	WgInterface  *iface.WGIface
-	AllowedIps   string
-	PreSharedKey *wgtypes.Key
-}
-
-type Proxy interface {
-	io.Closer
-	// Start creates a local remoteConn and starts proxying data from/to remoteConn
-	Start(remoteConn net.Conn) error
-	Type() Type
-}

client/internal/proxy/wireguard.go

@@ -1,128 +0,0 @@
-package proxy
-
-import (
-	"context"
-	log "github.com/sirupsen/logrus"
-	"net"
-)
-
-// WireGuardProxy proxies
-type WireGuardProxy struct {
-	ctx    context.Context
-	cancel context.CancelFunc
-
-	config Config
-
-	remoteConn net.Conn
-	localConn  net.Conn
-}
-
-func NewWireGuardProxy(config Config) *WireGuardProxy {
-	p := &WireGuardProxy{config: config}
-	p.ctx, p.cancel = context.WithCancel(context.Background())
-	return p
-}
-
-func (p *WireGuardProxy) updateEndpoint() error {
-	udpAddr, err := net.ResolveUDPAddr(p.localConn.LocalAddr().Network(), p.localConn.LocalAddr().String())
-	if err != nil {
-		return err
-	}
-	// add local proxy connection as a Wireguard peer
-	err = p.config.WgInterface.UpdatePeer(p.config.RemoteKey, p.config.AllowedIps, DefaultWgKeepAlive,
-		udpAddr, p.config.PreSharedKey)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (p *WireGuardProxy) Start(remoteConn net.Conn) error {
-	p.remoteConn = remoteConn
-
-	var err error
-	p.localConn, err = net.Dial("udp", p.config.WgListenAddr)
-	if err != nil {
-		log.Errorf("failed dialing to local Wireguard port %s", err)
-		return err
-	}
-
-	err = p.updateEndpoint()
-	if err != nil {
-		log.Errorf("error while updating Wireguard peer endpoint [%s] %v", p.config.RemoteKey, err)
-		return err
-	}
-
-	go p.proxyToRemote()
-	go p.proxyToLocal()
-
-	return nil
-}
-
-func (p *WireGuardProxy) Close() error {
-	p.cancel()
-	if c := p.localConn; c != nil {
-		err := p.localConn.Close()
-		if err != nil {
-			return err
-		}
-	}
-	err := p.config.WgInterface.RemovePeer(p.config.RemoteKey)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-// proxyToRemote proxies everything from Wireguard to the RemoteKey peer
-// blocks
-func (p *WireGuardProxy) proxyToRemote() {
-
-	buf := make([]byte, 1500)
-	for {
-		select {
-		case <-p.ctx.Done():
-			log.Debugf("stopped proxying to remote peer %s due to closed connection", p.config.RemoteKey)
-			return
-		default:
-			n, err := p.localConn.Read(buf)
-			if err != nil {
-				continue
-			}
-
-			_, err = p.remoteConn.Write(buf[:n])
-			if err != nil {
-				continue
-			}
-		}
-	}
-}
-
-// proxyToLocal proxies everything from the RemoteKey peer to local Wireguard
-// blocks
-func (p *WireGuardProxy) proxyToLocal() {
-
-	buf := make([]byte, 1500)
-	for {
-		select {
-		case <-p.ctx.Done():
-			log.Debugf("stopped proxying from remote peer %s due to closed connection", p.config.RemoteKey)
-			return
-		default:
-			n, err := p.remoteConn.Read(buf)
-			if err != nil {
-				continue
-			}
-
-			_, err = p.localConn.Write(buf[:n])
-			if err != nil {
-				continue
-			}
-		}
-	}
-}
-
-func (p *WireGuardProxy) Type() Type {
-	return TypeWireGuard
-}

client/internal/templates/embed.go

@@ -0,0 +1,8 @@
+package templates
+
+import (
+	_ "embed"
+)
+
+//go:embed pkce-auth-msg.html
+var PKCEAuthMsgTmpl string

client/internal/templates/pkce-auth-msg.html

@@ -0,0 +1,87 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1"/>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            min-height: 100vh;
+            margin: 0;
+            background: #f7f8f9;
+            font-family: sans-serif, Arial, Tahoma;
+        }
+
+        .container {
+            width: 100%;
+            background: white;
+            border: 1px solid #e8e9ea;
+            text-align: center;
+            padding: 20px;
+            padding-bottom: 50px;
+            max-width: 550px;
+            margin: 0 10px;
+        }
+
+        .logo {
+            height: 80px;
+            border-bottom: 1px solid #e8e9ea;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+        }
+
+        .logo img {
+            width: 130px;
+        }
+
+        .content {
+            font-size: 13px;
+            color: #525252;
+            line-height: 18px;
+            padding: 10px 0;
+        }
+
+        .content div {
+            font-size: 18px;
+            line-height: normal;
+            margin-bottom: 5px;
+            color: black;
+        }
+    </style>
+</head>
+<body>
+<div class="container">
+    <div class="logo">
+        <img src="https://img.mailinblue.com/6211297/images/content_library/original/64bd4ce82e1ea753e439b6a2.png">
+    </div>
+    <br>
+    {{ if .Error }}
+    <svg xmlns="http://www.w3.org/2000/svg" height="50" viewBox="0 0 100 100">
+        <circle cx="50" cy="50" r="45" fill="none" stroke="red" stroke-width="3"/>
+        <path d="M30 30 L70 70 M30 70 L70 30" fill="none" stroke="red" stroke-width="3"/>
+    </svg>
+    <div class="content">
+        <div>
+            Login failed
+        </div>
+        {{ .Error }}.
+    </div>
+    {{ else }}
+    <svg xmlns="http://www.w3.org/2000/svg" height="50" viewBox="0 0 100 100">
+        <circle cx="50" cy="50" r="45" fill="none" stroke="#5cb85c" stroke-width="3"/>
+        <path d="M30 50 L45 65 L70 35" fill="none" stroke="#5cb85c" stroke-width="5"/>
+    </svg>
+    <div class="content">
+        <div>
+            Login successful
+        </div>
+        Your device is now registered and logged in to NetBird.
+        <br>
+        You can now close this window.
+    </div>
+    {{ end }}
+</div>
+</body>
+</html>

client/internal/wgproxy/ebpf/bpf_bpfeb.go

@@ -0,0 +1,120 @@
+// Code generated by bpf2go; DO NOT EDIT.
+//go:build arm64be || armbe || mips || mips64 || mips64p32 || ppc64 || s390 || s390x || sparc || sparc64
+// +build arm64be armbe mips mips64 mips64p32 ppc64 s390 s390x sparc sparc64
+
+package ebpf
+
+import (
+	"bytes"
+	_ "embed"
+	"fmt"
+	"io"
+
+	"github.com/cilium/ebpf"
+)
+
+// loadBpf returns the embedded CollectionSpec for bpf.
+func loadBpf() (*ebpf.CollectionSpec, error) {
+	reader := bytes.NewReader(_BpfBytes)
+	spec, err := ebpf.LoadCollectionSpecFromReader(reader)
+	if err != nil {
+		return nil, fmt.Errorf("can't load bpf: %w", err)
+	}
+
+	return spec, err
+}
+
+// loadBpfObjects loads bpf and converts it into a struct.
+//
+// The following types are suitable as obj argument:
+//
+//	*bpfObjects
+//	*bpfPrograms
+//	*bpfMaps
+//
+// See ebpf.CollectionSpec.LoadAndAssign documentation for details.
+func loadBpfObjects(obj interface{}, opts *ebpf.CollectionOptions) error {
+	spec, err := loadBpf()
+	if err != nil {
+		return err
+	}
+
+	return spec.LoadAndAssign(obj, opts)
+}
+
+// bpfSpecs contains maps and programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfSpecs struct {
+	bpfProgramSpecs
+	bpfMapSpecs
+}
+
+// bpfSpecs contains programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfProgramSpecs struct {
+	XdpProgFunc *ebpf.ProgramSpec `ebpf:"xdp_prog_func"`
+}
+
+// bpfMapSpecs contains maps before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfMapSpecs struct {
+	XdpPortMap *ebpf.MapSpec `ebpf:"xdp_port_map"`
+}
+
+// bpfObjects contains all objects after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfObjects struct {
+	bpfPrograms
+	bpfMaps
+}
+
+func (o *bpfObjects) Close() error {
+	return _BpfClose(
+		&o.bpfPrograms,
+		&o.bpfMaps,
+	)
+}
+
+// bpfMaps contains all maps after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfMaps struct {
+	XdpPortMap *ebpf.Map `ebpf:"xdp_port_map"`
+}
+
+func (m *bpfMaps) Close() error {
+	return _BpfClose(
+		m.XdpPortMap,
+	)
+}
+
+// bpfPrograms contains all programs after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfPrograms struct {
+	XdpProgFunc *ebpf.Program `ebpf:"xdp_prog_func"`
+}
+
+func (p *bpfPrograms) Close() error {
+	return _BpfClose(
+		p.XdpProgFunc,
+	)
+}
+
+func _BpfClose(closers ...io.Closer) error {
+	for _, closer := range closers {
+		if err := closer.Close(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Do not access this directly.
+//
+//go:embed bpf_bpfeb.o
+var _BpfBytes []byte

client/internal/wgproxy/ebpf/bpf_bpfel.go

@@ -0,0 +1,120 @@
+// Code generated by bpf2go; DO NOT EDIT.
+//go:build 386 || amd64 || amd64p32 || arm || arm64 || mips64le || mips64p32le || mipsle || ppc64le || riscv64
+// +build 386 amd64 amd64p32 arm arm64 mips64le mips64p32le mipsle ppc64le riscv64
+
+package ebpf
+
+import (
+	"bytes"
+	_ "embed"
+	"fmt"
+	"io"
+
+	"github.com/cilium/ebpf"
+)
+
+// loadBpf returns the embedded CollectionSpec for bpf.
+func loadBpf() (*ebpf.CollectionSpec, error) {
+	reader := bytes.NewReader(_BpfBytes)
+	spec, err := ebpf.LoadCollectionSpecFromReader(reader)
+	if err != nil {
+		return nil, fmt.Errorf("can't load bpf: %w", err)
+	}
+
+	return spec, err
+}
+
+// loadBpfObjects loads bpf and converts it into a struct.
+//
+// The following types are suitable as obj argument:
+//
+//	*bpfObjects
+//	*bpfPrograms
+//	*bpfMaps
+//
+// See ebpf.CollectionSpec.LoadAndAssign documentation for details.
+func loadBpfObjects(obj interface{}, opts *ebpf.CollectionOptions) error {
+	spec, err := loadBpf()
+	if err != nil {
+		return err
+	}
+
+	return spec.LoadAndAssign(obj, opts)
+}
+
+// bpfSpecs contains maps and programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfSpecs struct {
+	bpfProgramSpecs
+	bpfMapSpecs
+}
+
+// bpfSpecs contains programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfProgramSpecs struct {
+	XdpProgFunc *ebpf.ProgramSpec `ebpf:"xdp_prog_func"`
+}
+
+// bpfMapSpecs contains maps before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfMapSpecs struct {
+	XdpPortMap *ebpf.MapSpec `ebpf:"xdp_port_map"`
+}
+
+// bpfObjects contains all objects after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfObjects struct {
+	bpfPrograms
+	bpfMaps
+}
+
+func (o *bpfObjects) Close() error {
+	return _BpfClose(
+		&o.bpfPrograms,
+		&o.bpfMaps,
+	)
+}
+
+// bpfMaps contains all maps after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfMaps struct {
+	XdpPortMap *ebpf.Map `ebpf:"xdp_port_map"`
+}
+
+func (m *bpfMaps) Close() error {
+	return _BpfClose(
+		m.XdpPortMap,
+	)
+}
+
+// bpfPrograms contains all programs after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfPrograms struct {
+	XdpProgFunc *ebpf.Program `ebpf:"xdp_prog_func"`
+}
+
+func (p *bpfPrograms) Close() error {
+	return _BpfClose(
+		p.XdpProgFunc,
+	)
+}
+
+func _BpfClose(closers ...io.Closer) error {
+	for _, closer := range closers {
+		if err := closer.Close(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Do not access this directly.
+//
+//go:embed bpf_bpfel.o
+var _BpfBytes []byte

client/internal/wgproxy/ebpf/loader.go

@@ -0,0 +1,84 @@
+//go:build linux && !android
+
+package ebpf
+
+import (
+	_ "embed"
+	"net"
+
+	"github.com/cilium/ebpf/link"
+	"github.com/cilium/ebpf/rlimit"
+)
+
+const (
+	mapKeyProxyPort uint32 = 0
+	mapKeyWgPort    uint32 = 1
+)
+
+//go:generate go run github.com/cilium/ebpf/cmd/bpf2go -cc clang-14 bpf src/portreplace.c --
+
+// EBPF is a wrapper for eBPF program
+type EBPF struct {
+	link link.Link
+}
+
+// NewEBPF create new EBPF instance
+func NewEBPF() *EBPF {
+	return &EBPF{}
+}
+
+// Load load ebpf program
+func (l *EBPF) Load(proxyPort, wgPort int) error {
+	// it required for Docker
+	err := rlimit.RemoveMemlock()
+	if err != nil {
+		return err
+	}
+
+	ifce, err := net.InterfaceByName("lo")
+	if err != nil {
+		return err
+	}
+
+	// Load pre-compiled programs into the kernel.
+	objs := bpfObjects{}
+	err = loadBpfObjects(&objs, nil)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = objs.Close()
+	}()
+
+	err = objs.XdpPortMap.Put(mapKeyProxyPort, uint16(proxyPort))
+	if err != nil {
+		return err
+	}
+
+	err = objs.XdpPortMap.Put(mapKeyWgPort, uint16(wgPort))
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		_ = objs.XdpPortMap.Close()
+	}()
+
+	l.link, err = link.AttachXDP(link.XDPOptions{
+		Program:   objs.XdpProgFunc,
+		Interface: ifce.Index,
+	})
+	if err != nil {
+		return err
+	}
+
+	return err
+}
+
+// Free free ebpf program
+func (l *EBPF) Free() error {
+	if l.link != nil {
+		return l.link.Close()
+	}
+	return nil
+}

client/internal/wgproxy/ebpf/loader_test.go

@@ -0,0 +1,18 @@
+//go:build linux
+
+package ebpf
+
+import (
+	"testing"
+)
+
+func Test_newEBPF(t *testing.T) {
+	ebpf := NewEBPF()
+	err := ebpf.Load(1234, 51892)
+	defer func() {
+		_ = ebpf.Free()
+	}()
+	if err != nil {
+		t.Errorf("%s", err)
+	}
+}

client/internal/wgproxy/ebpf/src/portreplace.c

@@ -0,0 +1,90 @@
+#include <stdbool.h>
+#include <linux/if_ether.h> // ETH_P_IP
+#include <linux/udp.h>
+#include <linux/ip.h>
+#include <netinet/in.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+#define bpf_printk(fmt, ...)                                                   \
+  ({                                                                           \
+    char ____fmt[] = fmt;                                                      \
+    bpf_trace_printk(____fmt, sizeof(____fmt), ##__VA_ARGS__);                 \
+  })
+
+const __u32 map_key_proxy_port = 0;
+const __u32 map_key_wg_port = 1;
+
+struct bpf_map_def SEC("maps") xdp_port_map = {
+	.type = BPF_MAP_TYPE_ARRAY,
+	.key_size = sizeof(__u32),
+	.value_size = sizeof(__u16),
+	.max_entries = 10,
+};
+
+__u16 proxy_port = 0;
+__u16 wg_port = 0;
+
+bool read_port_settings() {
+    __u16 *value;
+    value = bpf_map_lookup_elem(&xdp_port_map, &map_key_proxy_port);
+    if(!value) {
+        return false;
+    }
+
+    proxy_port = *value;
+
+    value = bpf_map_lookup_elem(&xdp_port_map, &map_key_wg_port);
+    if(!value) {
+        return false;
+    }
+    wg_port = *value;
+
+    return true;
+}
+
+SEC("xdp")
+int xdp_prog_func(struct xdp_md *ctx) {
+    if(proxy_port == 0 || wg_port == 0) {
+        if(!read_port_settings()){
+            return XDP_PASS;
+        }
+        bpf_printk("proxy port: %d, wg port: %d", proxy_port, wg_port);
+    }
+
+	void *data     = (void *)(long)ctx->data;
+	void *data_end = (void *)(long)ctx->data_end;
+	struct ethhdr *eth = data;
+    struct iphdr  *ip   = (data + sizeof(struct ethhdr));
+    struct udphdr *udp = (data + sizeof(struct ethhdr) + sizeof(struct iphdr));
+
+    // return early if not enough data
+    if (data + sizeof(struct ethhdr) + sizeof(struct iphdr) + sizeof(struct udphdr) > data_end){
+        return XDP_PASS;
+    }
+
+    // skip non IPv4 packages
+    if (eth->h_proto != htons(ETH_P_IP)) {
+       return XDP_PASS;
+    }
+
+    if (ip->protocol != IPPROTO_UDP) {
+       return XDP_PASS;
+    }
+
+    // 2130706433 = 127.0.0.1
+    if (ip->daddr != htonl(2130706433)) {
+        return XDP_PASS;
+    }
+
+    if (udp->source != htons(wg_port)){
+        return XDP_PASS;
+    }
+
+    __be16 new_src_port = udp->dest;
+    __be16 new_dst_port = htons(proxy_port);
+    udp->dest = new_dst_port;
+    udp->source = new_src_port;
+	return XDP_PASS;
+}
+char _license[] SEC("license") = "GPL";

client/internal/wgproxy/factory.go

@@ -0,0 +1,20 @@
+package wgproxy
+
+type Factory struct {
+	wgPort    int
+	ebpfProxy Proxy
+}
+
+func (w *Factory) GetProxy() Proxy {
+	if w.ebpfProxy != nil {
+		return w.ebpfProxy
+	}
+	return NewWGUserSpaceProxy(w.wgPort)
+}
+
+func (w *Factory) Free() error {
+	if w.ebpfProxy != nil {
+		return w.ebpfProxy.CloseConn()
+	}
+	return nil
+}

client/internal/wgproxy/factory_linux.go

@@ -0,0 +1,21 @@
+//go:build !android
+
+package wgproxy
+
+import (
+	log "github.com/sirupsen/logrus"
+)
+
+func NewFactory(wgPort int) *Factory {
+	f := &Factory{wgPort: wgPort}
+
+	ebpfProxy := NewWGEBPFProxy(wgPort)
+	err := ebpfProxy.Listen()
+	if err != nil {
+		log.Errorf("failed to initialize ebpf proxy: %s", err)
+		return f
+	}
+
+	f.ebpfProxy = ebpfProxy
+	return f
+}

client/internal/wgproxy/factory_nonlinux.go

@@ -0,0 +1,7 @@
+//go:build !linux || android
+
+package wgproxy
+
+func NewFactory(wgPort int) *Factory {
+	return &Factory{wgPort: wgPort}
+}

client/internal/wgproxy/portlookup.go

@@ -0,0 +1,32 @@
+package wgproxy
+
+import (
+	"fmt"
+	"net"
+)
+
+const (
+	portRangeStart = 3128
+	portRangeEnd   = 3228
+)
+
+type portLookup struct {
+}
+
+func (pl portLookup) searchFreePort() (int, error) {
+	for i := portRangeStart; i <= portRangeEnd; i++ {
+		if pl.tryToBind(i) == nil {
+			return i, nil
+		}
+	}
+	return 0, fmt.Errorf("failed to bind free port for eBPF proxy")
+}
+
+func (pl portLookup) tryToBind(port int) error {
+	l, err := net.ListenPacket("udp", fmt.Sprintf(":%d", port))
+	if err != nil {
+		return err
+	}
+	_ = l.Close()
+	return nil
+}

client/internal/wgproxy/portlookup_test.go

@@ -0,0 +1,42 @@
+package wgproxy
+
+import (
+	"fmt"
+	"net"
+	"testing"
+)
+
+func Test_portLookup_searchFreePort(t *testing.T) {
+	pl := portLookup{}
+	_, err := pl.searchFreePort()
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func Test_portLookup_on_allocated(t *testing.T) {
+	pl := portLookup{}
+
+	allocatedPort, err := allocatePort(portRangeStart)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer allocatedPort.Close()
+
+	fp, err := pl.searchFreePort()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if fp != (portRangeStart + 1) {
+		t.Errorf("invalid free port, expected: %d, got: %d", portRangeStart+1, fp)
+	}
+}
+
+func allocatePort(port int) (net.PacketConn, error) {
+	c, err := net.ListenPacket("udp", fmt.Sprintf(":%d", port))
+	if err != nil {
+		return nil, err
+	}
+	return c, err
+}

client/internal/wgproxy/proxy.go

@@ -0,0 +1,12 @@
+package wgproxy
+
+import (
+	"net"
+)
+
+// Proxy is a transfer layer between the Turn connection and the WireGuard
+type Proxy interface {
+	AddTurnConn(urnConn net.Conn) (net.Addr, error)
+	CloseConn() error
+	Free() error
+}

client/internal/wgproxy/proxy_ebpf.go

@@ -0,0 +1,252 @@
+//go:build linux && !android
+
+package wgproxy
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"os"
+	"sync"
+	"syscall"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+
+	log "github.com/sirupsen/logrus"
+
+	ebpf2 "github.com/netbirdio/netbird/client/internal/wgproxy/ebpf"
+)
+
+// WGEBPFProxy definition for proxy with EBPF support
+type WGEBPFProxy struct {
+	ebpf              *ebpf2.EBPF
+	lastUsedPort      uint16
+	localWGListenPort int
+
+	turnConnStore map[uint16]net.Conn
+	turnConnMutex sync.Mutex
+
+	rawConn net.PacketConn
+	conn    *net.UDPConn
+}
+
+// NewWGEBPFProxy create new WGEBPFProxy instance
+func NewWGEBPFProxy(wgPort int) *WGEBPFProxy {
+	log.Debugf("instantiate ebpf proxy")
+	wgProxy := &WGEBPFProxy{
+		localWGListenPort: wgPort,
+		ebpf:              ebpf2.NewEBPF(),
+		lastUsedPort:      0,
+		turnConnStore:     make(map[uint16]net.Conn),
+	}
+	return wgProxy
+}
+
+// Listen load ebpf program and listen the proxy
+func (p *WGEBPFProxy) Listen() error {
+	pl := portLookup{}
+	wgPorxyPort, err := pl.searchFreePort()
+	if err != nil {
+		return err
+	}
+
+	p.rawConn, err = p.prepareSenderRawSocket()
+	if err != nil {
+		return err
+	}
+
+	err = p.ebpf.Load(wgPorxyPort, p.localWGListenPort)
+	if err != nil {
+		return err
+	}
+
+	addr := net.UDPAddr{
+		Port: wgPorxyPort,
+		IP:   net.ParseIP("127.0.0.1"),
+	}
+
+	p.conn, err = net.ListenUDP("udp", &addr)
+	if err != nil {
+		cErr := p.Free()
+		if err != nil {
+			log.Errorf("failed to close the wgproxy: %s", cErr)
+		}
+		return err
+	}
+
+	go p.proxyToRemote()
+	log.Infof("local wg proxy listening on: %d", wgPorxyPort)
+	return nil
+}
+
+// AddTurnConn add new turn connection for the proxy
+func (p *WGEBPFProxy) AddTurnConn(turnConn net.Conn) (net.Addr, error) {
+	wgEndpointPort, err := p.storeTurnConn(turnConn)
+	if err != nil {
+		return nil, err
+	}
+
+	go p.proxyToLocal(wgEndpointPort, turnConn)
+	log.Infof("turn conn added to wg proxy store: %s, endpoint port: :%d", turnConn.RemoteAddr(), wgEndpointPort)
+
+	wgEndpoint := &net.UDPAddr{
+		IP:   net.ParseIP("127.0.0.1"),
+		Port: int(wgEndpointPort),
+	}
+	return wgEndpoint, nil
+}
+
+// CloseConn doing nothing because this type of proxy implementation does not store the connection
+func (p *WGEBPFProxy) CloseConn() error {
+	return nil
+}
+
+// Free resources
+func (p *WGEBPFProxy) Free() error {
+	var err1, err2, err3 error
+	if p.conn != nil {
+		err1 = p.conn.Close()
+	}
+
+	err2 = p.ebpf.Free()
+	if p.rawConn != nil {
+		err3 = p.rawConn.Close()
+	}
+
+	if err1 != nil {
+		return err1
+	}
+
+	if err2 != nil {
+		return err2
+	}
+
+	return err3
+}
+
+func (p *WGEBPFProxy) proxyToLocal(endpointPort uint16, remoteConn net.Conn) {
+	buf := make([]byte, 1500)
+	for {
+		n, err := remoteConn.Read(buf)
+		if err != nil {
+			if err != io.EOF {
+				log.Errorf("failed to read from turn conn (endpoint: :%d): %s", endpointPort, err)
+			}
+			p.removeTurnConn(endpointPort)
+			return
+		}
+		err = p.sendPkg(buf[:n], endpointPort)
+		if err != nil {
+			log.Errorf("failed to write out turn pkg to local conn: %v", err)
+		}
+	}
+}
+
+// proxyToRemote read messages from local WireGuard interface and forward it to remote conn
+func (p *WGEBPFProxy) proxyToRemote() {
+	buf := make([]byte, 1500)
+	for {
+		n, addr, err := p.conn.ReadFromUDP(buf)
+		if err != nil {
+			log.Errorf("failed to read UDP pkg from WG: %s", err)
+			return
+		}
+
+		conn, ok := p.turnConnStore[uint16(addr.Port)]
+		if !ok {
+			log.Errorf("turn conn not found by port: %d", addr.Port)
+			continue
+		}
+
+		_, err = conn.Write(buf[:n])
+		if err != nil {
+			log.Debugf("failed to forward local wg pkg (%d) to remote turn conn: %s", addr.Port, err)
+		}
+	}
+}
+
+func (p *WGEBPFProxy) storeTurnConn(turnConn net.Conn) (uint16, error) {
+	p.turnConnMutex.Lock()
+	defer p.turnConnMutex.Unlock()
+
+	np, err := p.nextFreePort()
+	if err != nil {
+		return np, err
+	}
+	p.turnConnStore[np] = turnConn
+	return np, nil
+}
+
+func (p *WGEBPFProxy) removeTurnConn(turnConnID uint16) {
+	log.Tracef("remove turn conn from store by port: %d", turnConnID)
+	p.turnConnMutex.Lock()
+	defer p.turnConnMutex.Unlock()
+	delete(p.turnConnStore, turnConnID)
+
+}
+
+func (p *WGEBPFProxy) nextFreePort() (uint16, error) {
+	if len(p.turnConnStore) == 65535 {
+		return 0, fmt.Errorf("reached maximum turn connection numbers")
+	}
+generatePort:
+	if p.lastUsedPort == 65535 {
+		p.lastUsedPort = 1
+	} else {
+		p.lastUsedPort++
+	}
+
+	if _, ok := p.turnConnStore[p.lastUsedPort]; ok {
+		goto generatePort
+	}
+	return p.lastUsedPort, nil
+}
+
+func (p *WGEBPFProxy) prepareSenderRawSocket() (net.PacketConn, error) {
+	fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_RAW, syscall.IPPROTO_RAW)
+	if err != nil {
+		return nil, err
+	}
+	err = syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_HDRINCL, 1)
+	if err != nil {
+		return nil, err
+	}
+	err = syscall.SetsockoptString(fd, syscall.SOL_SOCKET, syscall.SO_BINDTODEVICE, "lo")
+	if err != nil {
+		return nil, err
+	}
+
+	return net.FilePacketConn(os.NewFile(uintptr(fd), fmt.Sprintf("fd %d", fd)))
+}
+
+func (p *WGEBPFProxy) sendPkg(data []byte, port uint16) error {
+	localhost := net.ParseIP("127.0.0.1")
+
+	payload := gopacket.Payload(data)
+	ipH := &layers.IPv4{
+		DstIP:    localhost,
+		SrcIP:    localhost,
+		Version:  4,
+		TTL:      64,
+		Protocol: layers.IPProtocolUDP,
+	}
+	udpH := &layers.UDP{
+		SrcPort: layers.UDPPort(port),
+		DstPort: layers.UDPPort(p.localWGListenPort),
+	}
+
+	err := udpH.SetNetworkLayerForChecksum(ipH)
+	if err != nil {
+		return err
+	}
+
+	layerBuffer := gopacket.NewSerializeBuffer()
+
+	err = gopacket.SerializeLayers(layerBuffer, gopacket.SerializeOptions{ComputeChecksums: true, FixLengths: true}, ipH, udpH, payload)
+	if err != nil {
+		return err
+	}
+	_, err = p.rawConn.WriteTo(layerBuffer.Bytes(), &net.IPAddr{IP: localhost})
+	return err
+}

client/internal/wgproxy/proxy_ebpf_test.go

@@ -0,0 +1,56 @@
+//go:build linux && !android
+
+package wgproxy
+
+import (
+	"testing"
+)
+
+func TestWGEBPFProxy_connStore(t *testing.T) {
+	wgProxy := NewWGEBPFProxy(1)
+
+	p, _ := wgProxy.storeTurnConn(nil)
+	if p != 1 {
+		t.Errorf("invalid initial port: %d", wgProxy.lastUsedPort)
+	}
+
+	numOfConns := 10
+	for i := 0; i < numOfConns; i++ {
+		p, _ = wgProxy.storeTurnConn(nil)
+	}
+	if p != uint16(numOfConns)+1 {
+		t.Errorf("invalid last used port: %d, expected: %d", p, numOfConns+1)
+	}
+	if len(wgProxy.turnConnStore) != numOfConns+1 {
+		t.Errorf("invalid store size: %d, expected: %d", len(wgProxy.turnConnStore), numOfConns+1)
+	}
+}
+
+func TestWGEBPFProxy_portCalculation_overflow(t *testing.T) {
+	wgProxy := NewWGEBPFProxy(1)
+
+	_, _ = wgProxy.storeTurnConn(nil)
+	wgProxy.lastUsedPort = 65535
+	p, _ := wgProxy.storeTurnConn(nil)
+
+	if len(wgProxy.turnConnStore) != 2 {
+		t.Errorf("invalid store size: %d, expected: %d", len(wgProxy.turnConnStore), 2)
+	}
+
+	if p != 2 {
+		t.Errorf("invalid last used port: %d, expected: %d", p, 2)
+	}
+}
+
+func TestWGEBPFProxy_portCalculation_maxConn(t *testing.T) {
+	wgProxy := NewWGEBPFProxy(1)
+
+	for i := 0; i < 65535; i++ {
+		_, _ = wgProxy.storeTurnConn(nil)
+	}
+
+	_, err := wgProxy.storeTurnConn(nil)
+	if err == nil {
+		t.Errorf("invalid turn conn store calculation")
+	}
+}

client/internal/wgproxy/proxy_userspace.go

@@ -0,0 +1,105 @@
+package wgproxy
+
+import (
+	"context"
+	"fmt"
+	"net"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// WGUserSpaceProxy proxies
+type WGUserSpaceProxy struct {
+	localWGListenPort int
+	ctx               context.Context
+	cancel            context.CancelFunc
+
+	remoteConn net.Conn
+	localConn  net.Conn
+}
+
+// NewWGUserSpaceProxy instantiate a user space WireGuard proxy
+func NewWGUserSpaceProxy(wgPort int) *WGUserSpaceProxy {
+	p := &WGUserSpaceProxy{
+		localWGListenPort: wgPort,
+	}
+	p.ctx, p.cancel = context.WithCancel(context.Background())
+	return p
+}
+
+// AddTurnConn start the proxy with the given remote conn
+func (p *WGUserSpaceProxy) AddTurnConn(remoteConn net.Conn) (net.Addr, error) {
+	p.remoteConn = remoteConn
+
+	var err error
+	p.localConn, err = net.Dial("udp", fmt.Sprintf(":%d", p.localWGListenPort))
+	if err != nil {
+		log.Errorf("failed dialing to local Wireguard port %s", err)
+		return nil, err
+	}
+
+	go p.proxyToRemote()
+	go p.proxyToLocal()
+
+	return p.localConn.LocalAddr(), err
+}
+
+// CloseConn close the localConn
+func (p *WGUserSpaceProxy) CloseConn() error {
+	p.cancel()
+	if p.localConn == nil {
+		return nil
+	}
+	return p.localConn.Close()
+}
+
+// Free doing nothing because this implementation of proxy does not have global state
+func (p *WGUserSpaceProxy) Free() error {
+	return nil
+}
+
+// proxyToRemote proxies everything from Wireguard to the RemoteKey peer
+// blocks
+func (p *WGUserSpaceProxy) proxyToRemote() {
+
+	buf := make([]byte, 1500)
+	for {
+		select {
+		case <-p.ctx.Done():
+			return
+		default:
+			n, err := p.localConn.Read(buf)
+			if err != nil {
+				continue
+			}
+
+			_, err = p.remoteConn.Write(buf[:n])
+			if err != nil {
+				continue
+			}
+		}
+	}
+}
+
+// proxyToLocal proxies everything from the RemoteKey peer to local Wireguard
+// blocks
+func (p *WGUserSpaceProxy) proxyToLocal() {
+
+	buf := make([]byte, 1500)
+	for {
+		select {
+		case <-p.ctx.Done():
+			return
+		default:
+			n, err := p.remoteConn.Read(buf)
+			if err != nil {
+				continue
+			}
+
+			_, err = p.localConn.Write(buf[:n])
+			if err != nil {
+				continue
+			}
+		}
+	}
+}

client/server/server.go

@@ -3,6 +3,7 @@ package server
 import (
 	"context"
 	"fmt"
+	"github.com/netbirdio/netbird/client/internal/auth"
 	"sync"
 	"time"
 
@@ -38,8 +39,8 @@ type Server struct {
 
 type oauthAuthFlow struct {
 	expiresAt  time.Time
-	client     internal.OAuthClient
-	info       internal.DeviceAuthInfo
+	flow       auth.OAuthFlow
+	info       auth.AuthFlowInfo
 	waitCancel context.CancelFunc
 }
 
@@ -206,28 +207,15 @@ func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*pro
 	state.Set(internal.StatusConnecting)
 
 	if msg.SetupKey == "" {
-		providerConfig, err := internal.GetDeviceAuthorizationFlowInfo(ctx, config.PrivateKey, config.ManagementURL)
+		oAuthFlow, err := auth.NewOAuthFlow(ctx, config)
 		if err != nil {
 			state.Set(internal.StatusLoginFailed)
-			s, ok := gstatus.FromError(err)
-			if ok && s.Code() == codes.NotFound {
-				return nil, gstatus.Errorf(codes.NotFound, "no SSO provider returned from management. "+
-					"If you are using hosting Netbird see documentation at "+
-					"https://github.com/netbirdio/netbird/tree/main/management for details")
-			} else if ok && s.Code() == codes.Unimplemented {
-				return nil, gstatus.Errorf(codes.Unimplemented, "the management server, %s, does not support SSO providers, "+
-					"please update your server or use Setup Keys to login", config.ManagementURL)
-			} else {
-				log.Errorf("getting device authorization flow info failed with error: %v", err)
-				return nil, err
-			}
+			return nil, err
 		}
 
-		hostedClient := internal.NewHostedDeviceFlow(providerConfig.ProviderConfig)
-
-		if s.oauthAuthFlow.client != nil && s.oauthAuthFlow.client.GetClientID(ctx) == hostedClient.GetClientID(context.TODO()) {
+		if s.oauthAuthFlow.flow != nil && s.oauthAuthFlow.flow.GetClientID(ctx) == oAuthFlow.GetClientID(context.TODO()) {
 			if s.oauthAuthFlow.expiresAt.After(time.Now().Add(90 * time.Second)) {
-				log.Debugf("using previous device flow info")
+				log.Debugf("using previous oauth flow info")
 				return &proto.LoginResponse{
 					NeedsSSOLogin:           true,
 					VerificationURI:         s.oauthAuthFlow.info.VerificationURI,
@@ -242,25 +230,25 @@ func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*pro
 			}
 		}
 
-		deviceAuthInfo, err := hostedClient.RequestDeviceCode(context.TODO())
+		authInfo, err := oAuthFlow.RequestAuthInfo(context.TODO())
 		if err != nil {
-			log.Errorf("getting a request device code failed: %v", err)
+			log.Errorf("getting a request OAuth flow failed: %v", err)
 			return nil, err
 		}
 
 		s.mutex.Lock()
-		s.oauthAuthFlow.client = hostedClient
-		s.oauthAuthFlow.info = deviceAuthInfo
-		s.oauthAuthFlow.expiresAt = time.Now().Add(time.Duration(deviceAuthInfo.ExpiresIn) * time.Second)
+		s.oauthAuthFlow.flow = oAuthFlow
+		s.oauthAuthFlow.info = authInfo
+		s.oauthAuthFlow.expiresAt = time.Now().Add(time.Duration(authInfo.ExpiresIn) * time.Second)
 		s.mutex.Unlock()
 
 		state.Set(internal.StatusNeedsLogin)
 
 		return &proto.LoginResponse{
 			NeedsSSOLogin:           true,
-			VerificationURI:         deviceAuthInfo.VerificationURI,
-			VerificationURIComplete: deviceAuthInfo.VerificationURIComplete,
-			UserCode:                deviceAuthInfo.UserCode,
+			VerificationURI:         authInfo.VerificationURI,
+			VerificationURIComplete: authInfo.VerificationURIComplete,
+			UserCode:                authInfo.UserCode,
 		}, nil
 	}
 
@@ -289,8 +277,8 @@ func (s *Server) WaitSSOLogin(callerCtx context.Context, msg *proto.WaitSSOLogin
 	s.actCancel = cancel
 	s.mutex.Unlock()
 
-	if s.oauthAuthFlow.client == nil {
-		return nil, gstatus.Errorf(codes.Internal, "oauth client is not initialized")
+	if s.oauthAuthFlow.flow == nil {
+		return nil, gstatus.Errorf(codes.Internal, "oauth flow is not initialized")
 	}
 
 	state := internal.CtxGetState(ctx)
@@ -304,10 +292,10 @@ func (s *Server) WaitSSOLogin(callerCtx context.Context, msg *proto.WaitSSOLogin
 	state.Set(internal.StatusConnecting)
 
 	s.mutex.Lock()
-	deviceAuthInfo := s.oauthAuthFlow.info
+	flowInfo := s.oauthAuthFlow.info
 	s.mutex.Unlock()
 
-	if deviceAuthInfo.UserCode != msg.UserCode {
+	if flowInfo.UserCode != msg.UserCode {
 		state.Set(internal.StatusLoginFailed)
 		return nil, gstatus.Errorf(codes.InvalidArgument, "sso user code is invalid")
 	}
@@ -324,7 +312,7 @@ func (s *Server) WaitSSOLogin(callerCtx context.Context, msg *proto.WaitSSOLogin
 	s.oauthAuthFlow.waitCancel = cancel
 	s.mutex.Unlock()
 
-	tokenInfo, err := s.oauthAuthFlow.client.WaitToken(waitCTX, deviceAuthInfo)
+	tokenInfo, err := s.oauthAuthFlow.flow.WaitToken(waitCTX, flowInfo)
 	if err != nil {
 		if err == context.Canceled {
 			return nil, nil

go.mod

@@ -30,6 +30,7 @@ require (
 require (
 	fyne.io/fyne/v2 v2.1.4
 	github.com/c-robinson/iplib v1.0.3
+	github.com/cilium/ebpf v0.10.0
 	github.com/coreos/go-iptables v0.6.0
 	github.com/creack/pty v1.1.18
 	github.com/eko/gocache/v3 v3.1.1
@@ -125,7 +126,6 @@ require (
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect
-	github.com/rogpeppe/go-internal v1.8.0 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/srwiley/oksvg v0.0.0-20200311192757-870daf9aa564 // indirect
 	github.com/srwiley/rasterx v0.0.0-20200120212402-85cb7272f5e9 // indirect

go.sum

@@ -101,6 +101,8 @@ github.com/cilium/ebpf v0.0.0-20200110133405-4032b1d8aae3/go.mod h1:MA5e5Lr8slmE
 github.com/cilium/ebpf v0.4.0/go.mod h1:4tRaxcgiL706VnOzHOdBlY8IEAIdxINsQBcU4xJJXRs=
 github.com/cilium/ebpf v0.5.0/go.mod h1:4tRaxcgiL706VnOzHOdBlY8IEAIdxINsQBcU4xJJXRs=
 github.com/cilium/ebpf v0.7.0/go.mod h1:/oI2+1shJiTGAMgl6/RgJr36Eo1jzrRcAWbcXO2usCA=
+github.com/cilium/ebpf v0.10.0 h1:nk5HPMeoBXtOzbkZBWym+ZWq1GIiHUsBFXxwewXAHLQ=
+github.com/cilium/ebpf v0.10.0/go.mod h1:DPiVdY/kT534dgc9ERmvP8mWA+9gvwgKfRvk4nNWnoE=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
@@ -177,7 +179,7 @@ github.com/evanphx/json-patch v4.12.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQL
 github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
 github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
 github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k=
-github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE=
+github.com/frankban/quicktest v1.14.4 h1:g2rn0vABPOOXmZUj+vbmUp0lPoXEMuhTpIluN0XL9UY=
 github.com/fredbi/uri v0.0.0-20181227131451-3dcfdacbaaf3 h1:FDqhDm7pcsLhhWl1QtD8vlzI4mm59llRvNzrFg6/LAA=
 github.com/fredbi/uri v0.0.0-20181227131451-3dcfdacbaaf3/go.mod h1:CzM2G82Q9BDUvMTGHnXf/6OExw/Dz2ivDj48nVg7Lg8=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
@@ -419,7 +421,7 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
-github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.4-0.20190131011033-7dc38fb350b1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
@@ -552,7 +554,6 @@ github.com/pion/turn/v2 v2.1.0 h1:5wGHSgGhJhP/RpabkUb/T9PdsAjkGLS6toYz5HNzoSI=
 github.com/pion/turn/v2 v2.1.0/go.mod h1:yrT5XbXSGX1VFSF31A3c1kCNB5bBZgk/uu5LET162qs=
 github.com/pion/udp/v2 v2.0.1 h1:xP0z6WNux1zWEjhC7onRA3EwwSliXqu1ElUZAQhUP54=
 github.com/pion/udp/v2 v2.0.1/go.mod h1:B7uvTMP00lzWdyMr/1PVZXtV3wpPIxBRd4Wl6AksXn8=
-github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -596,8 +597,7 @@ github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40T
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/rogpeppe/go-internal v1.8.0 h1:FCbCCtXNOY3UtUuHUYaghJg4y7Fd14rXifAYUAtL9R8=
-github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
 github.com/rs/cors v1.8.0 h1:P2KMzcFwrPoSjkF1WLRPsp3UMLyql8L4v9hQpVeK5so=
 github.com/rs/cors v1.8.0/go.mod h1:EBwu+T5AvHOcXwvZIkQFjUN6s8Czyqw12GL/Y0tUyRM=
 github.com/rs/xid v1.3.0 h1:6NjYksEUlhurdVehpc7S7dk6DAmcKv8V9gG0FsVN2U4=

iface/bind/udp_mux_universal.go

@@ -82,7 +82,7 @@ func (m *UniversalUDPMuxDefault) ReadFromConn(ctx context.Context) {
 		default:
 			_, a, err := m.params.UDPConn.ReadFrom(buf)
 			if err != nil {
-				log.Errorf("error while reading packet %s", err)
+				log.Errorf("error while reading packet: %s", err)
 				continue
 			}
 			msg := &stun.Message{

iface/iface.go

@@ -74,7 +74,7 @@ func (w *WGIface) UpdatePeer(peerKey string, allowedIps string, keepAlive time.D
 	w.mu.Lock()
 	defer w.mu.Unlock()
 
-	log.Debugf("updating interface %s peer %s: endpoint %s ", w.tun.DeviceName(), peerKey, endpoint)
+	log.Debugf("updating interface %s peer %s, endpoint %s ", w.tun.DeviceName(), peerKey, endpoint)
 	return w.configurer.updatePeer(peerKey, allowedIps, keepAlive, endpoint, preSharedKey)
 }
 

infrastructure_files/base.setup.env

@@ -43,6 +43,10 @@ NETBIRD_AUTH_DEVICE_AUTH_USE_ID_TOKEN=${NETBIRD_AUTH_DEVICE_AUTH_USE_ID_TOKEN:-f
 NETBIRD_DISABLE_ANONYMOUS_METRICS=${NETBIRD_DISABLE_ANONYMOUS_METRICS:-false}
 NETBIRD_TOKEN_SOURCE=${NETBIRD_TOKEN_SOURCE:-accessToken}
 
+# PKCE authorization flow
+NETBIRD_AUTH_PKCE_REDIRECT_URL_PORTS=${NETBIRD_AUTH_PKCE_REDIRECT_URL_PORTS:-"53000"}
+NETBIRD_AUTH_PKCE_USE_ID_TOKEN=${NETBIRD_AUTH_PKCE_USE_ID_TOKEN:-false}
+
 # exports
 export NETBIRD_DOMAIN
 export NETBIRD_AUTH_CLIENT_ID
@@ -80,4 +84,6 @@ export NETBIRD_AUTH_USER_ID_CLAIM
 export NETBIRD_AUTH_DEVICE_AUTH_AUDIENCE
 export NETBIRD_TOKEN_SOURCE
 export NETBIRD_AUTH_DEVICE_AUTH_SCOPE
-export NETBIRD_AUTH_DEVICE_AUTH_USE_ID_TOKEN
+export NETBIRD_AUTH_DEVICE_AUTH_USE_ID_TOKEN
+export NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT
+export NETBIRD_AUTH_PKCE_USE_ID_TOKEN

infrastructure_files/configure.sh

@@ -99,12 +99,17 @@ export NETBIRD_AUTH_AUTHORITY=$(jq -r '.issuer' openid-configuration.json)
 export NETBIRD_AUTH_JWT_CERTS=$(jq -r '.jwks_uri' openid-configuration.json)
 export NETBIRD_AUTH_TOKEN_ENDPOINT=$(jq -r '.token_endpoint' openid-configuration.json)
 export NETBIRD_AUTH_DEVICE_AUTH_ENDPOINT=$(jq -r '.device_authorization_endpoint' openid-configuration.json)
+export NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT=$(jq -r '.authorization_endpoint' openid-configuration.json)
 
 if [[ ! -z "${NETBIRD_AUTH_DEVICE_AUTH_CLIENT_ID}" ]]; then
   # user enabled Device Authorization Grant feature
   export NETBIRD_AUTH_DEVICE_AUTH_PROVIDER="hosted"
 fi
 
+if [ "$NETBIRD_TOKEN_SOURCE" = "idToken" ]; then
+    export NETBIRD_AUTH_PKCE_USE_ID_TOKEN=true
+fi
+
 # Check if letsencrypt was disabled
 if [[ "$NETBIRD_DISABLE_LETSENCRYPT" == "true" ]]; then
   export NETBIRD_DASHBOARD_ENDPOINT="https://$NETBIRD_DOMAIN:443"
@@ -151,6 +156,14 @@ if [ -n "$NETBIRD_MGMT_IDP" ]; then
   export NETBIRD_IDP_MGMT_EXTRA_CONFIG=$EXTRA_CONFIG
 fi
 
+IFS=',' read -r -a REDIRECT_URL_PORTS <<< "$NETBIRD_AUTH_PKCE_REDIRECT_URL_PORTS"
+REDIRECT_URLS=""
+for port in "${REDIRECT_URL_PORTS[@]}"; do
+    REDIRECT_URLS+="\"http://localhost:${port}\","
+done
+
+export NETBIRD_AUTH_PKCE_REDIRECT_URLS=${REDIRECT_URLS%,}
+
 env | grep NETBIRD
 
 envsubst <docker-compose.yml.tmpl >docker-compose.yml

infrastructure_files/getting-started-with-zitadel.sh

@@ -0,0 +1,735 @@
+#!/bin/bash
+
+set -e
+
+handle_request_command_status() {
+  PARSED_RESPONSE=$1
+  FUNCTION_NAME=$2
+  RESPONSE=$3
+  if [[ $PARSED_RESPONSE -ne 0 ]]; then
+    echo "ERROR calling $FUNCTION_NAME:" $(echo "$RESPONSE" | jq -r '.message') > /dev/stderr
+    exit 1
+  fi
+}
+
+handle_zitadel_request_response() {
+  PARSED_RESPONSE=$1
+  FUNCTION_NAME=$2
+  RESPONSE=$3
+  if [[ $PARSED_RESPONSE == "null" ]]; then
+    echo "ERROR calling $FUNCTION_NAME:" $(echo "$RESPONSE" | jq -r '.message') > /dev/stderr
+    exit 1
+  fi
+  sleep 1
+}
+
+check_docker_compose() {
+  if command -v docker-compose &> /dev/null
+  then
+      echo "docker-compose"
+      return
+  fi
+  if docker compose --help &> /dev/null
+  then
+      echo "docker compose"
+      return
+  fi
+
+  echo "docker-compose is not installed or not in PATH. Please follow the steps from the official guide: https://docs.docker.com/engine/install/" > /dev/stderr
+  exit 1
+}
+
+check_jq() {
+  if ! command -v jq &> /dev/null
+  then
+    echo "jq is not installed or not in PATH, please install with your package manager. e.g. sudo apt install jq" > /dev/stderr
+    exit 1
+  fi
+}
+
+wait_pgdb() {
+  set +e
+  while true; do
+    if $DOCKER_COMPOSE_COMMAND exec -T pgdb pg_isready -U postgres; then
+      break
+    fi
+    echo -n " ."
+    sleep 5
+  done
+  echo " done"
+  set -e
+}
+
+init_pgdb() {
+  echo -e "\nInitializing Zitadel's CockroachDB\n\n"
+  $DOCKER_COMPOSE_COMMAND up -d pgdb
+  echo ""
+  # shellcheck disable=SC2028
+  echo -n "Waiting cockroachDB  to become ready "
+  wait_pgdb
+  #$DOCKER_COMPOSE_COMMAND exec -T pgdb /bin/bash -c "cp /cockroach/certs/* /zitadel-certs/ && cockroach cert create-client --overwrite --certs-dir /zitadel-certs/ --ca-key /zitadel-certs/ca.key zitadel_user && chown -R 1000:1000 /zitadel-certs/"
+  handle_request_command_status $? "init_pgdb failed" ""
+}
+
+get_main_ip_address() {
+  if [[ "$OSTYPE" == "darwin"* ]]; then
+    interface=$(route -n get default | grep 'interface:' | awk '{print $2}')
+    ip_address=$(ifconfig "$interface" | grep 'inet ' | awk '{print $2}')
+  else
+    interface=$(ip route | grep default | awk '{print $5}' | head -n 1)
+    ip_address=$(ip addr show "$interface" | grep 'inet ' | awk '{print $2}' | cut -d'/' -f1)
+  fi
+
+  echo "$ip_address"
+}
+
+wait_pat() {
+  PAT_PATH=$1
+  set +e
+  while true; do
+    if [[ -f "$PAT_PATH" ]]; then
+      break
+    fi
+    echo -n " ."
+    sleep 1
+  done
+  echo " done"
+  set -e
+}
+
+wait_api() {
+    INSTANCE_URL=$1
+    PAT=$2
+    set +e
+    while true; do
+      curl -s --fail -o /dev/null "$INSTANCE_URL/auth/v1/users/me" -H "Authorization: Bearer $PAT"
+      if [[ $? -eq 0 ]]; then
+        break
+      fi
+      echo -n " ."
+      sleep 1
+    done
+    echo " done"
+    set -e
+}
+
+create_new_project() {
+  INSTANCE_URL=$1
+  PAT=$2
+  PROJECT_NAME="NETBIRD"
+
+  RESPONSE=$(
+    curl -sS -X POST "$INSTANCE_URL/management/v1/projects" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+      -d '{"name": "'"$PROJECT_NAME"'"}'
+  )
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.id')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "create_new_project" "$RESPONSE"
+  echo "$PARSED_RESPONSE"
+}
+
+create_new_application() {
+  INSTANCE_URL=$1
+  PAT=$2
+  APPLICATION_NAME=$3
+  BASE_REDIRECT_URL1=$4
+  BASE_REDIRECT_URL2=$5
+  ZITADEL_DEV_MODE=$6
+
+  RESPONSE=$(
+    curl -sS -X POST "$INSTANCE_URL/management/v1/projects/$PROJECT_ID/apps/oidc" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+      -d '{
+    "name": "'"$APPLICATION_NAME"'",
+    "redirectUris": [
+      "'"$BASE_REDIRECT_URL1"'",
+      "'"$BASE_REDIRECT_URL2"'"
+    ],
+    "postLogoutRedirectUris": [
+       "'"$BASE_REDIRECT_URL1"'"
+    ],
+    "RESPONSETypes": [
+      "OIDC_RESPONSE_TYPE_CODE"
+    ],
+    "grantTypes": [
+      "OIDC_GRANT_TYPE_AUTHORIZATION_CODE",
+      "OIDC_GRANT_TYPE_REFRESH_TOKEN"
+    ],
+    "appType": "OIDC_APP_TYPE_USER_AGENT",
+    "authMethodType": "OIDC_AUTH_METHOD_TYPE_NONE",
+    "version": "OIDC_VERSION_1_0",
+    "devMode": '"$ZITADEL_DEV_MODE"',
+    "accessTokenType": "OIDC_TOKEN_TYPE_JWT",
+    "accessTokenRoleAssertion": true,
+    "skipNativeAppSuccessPage": true
+  }'
+  )
+
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.clientId')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "create_new_application" "$RESPONSE"
+  echo "$PARSED_RESPONSE"
+}
+
+create_service_user() {
+  INSTANCE_URL=$1
+  PAT=$2
+
+  RESPONSE=$(
+    curl -sS -X POST "$INSTANCE_URL/management/v1/users/machine" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+      -d '{
+            "userName": "netbird-service-account",
+            "name": "Netbird Service Account",
+            "description": "Netbird Service Account for IDP management",
+            "accessTokenType": "ACCESS_TOKEN_TYPE_JWT"
+      }'
+  )
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.userId')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "create_service_user" "$RESPONSE"
+  echo "$PARSED_RESPONSE"
+}
+
+create_service_user_secret() {
+  INSTANCE_URL=$1
+  PAT=$2
+  USER_ID=$3
+
+  RESPONSE=$(
+    curl -sS -X PUT "$INSTANCE_URL/management/v1/users/$USER_ID/secret" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+      -d '{}'
+  )
+  SERVICE_USER_CLIENT_ID=$(echo "$RESPONSE" | jq -r '.clientId')
+  handle_zitadel_request_response "$SERVICE_USER_CLIENT_ID" "create_service_user_secret_id" "$RESPONSE"
+  SERVICE_USER_CLIENT_SECRET=$(echo "$RESPONSE" | jq -r '.clientSecret')
+  handle_zitadel_request_response "$SERVICE_USER_CLIENT_SECRET" "create_service_user_secret" "$RESPONSE"
+}
+
+add_organization_user_manager() {
+  INSTANCE_URL=$1
+  PAT=$2
+  USER_ID=$3
+
+  RESPONSE=$(
+    curl -sS -X POST "$INSTANCE_URL/management/v1/orgs/me/members" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+      -d '{
+            "userId": "'"$USER_ID"'",
+            "roles": [
+              "ORG_USER_MANAGER"
+            ]
+      }'
+  )
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.details.creationDate')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "add_organization_user_manager" "$RESPONSE"
+  echo "$PARSED_RESPONSE"
+}
+
+create_admin_user() {
+    INSTANCE_URL=$1
+    PAT=$2
+    USERNAME=$3
+    PASSWORD=$4
+    RESPONSE=$(
+        curl -sS -X POST "$INSTANCE_URL/management/v1/users/human/_import" \
+          -H "Authorization: Bearer $PAT" \
+          -H "Content-Type: application/json" \
+          -d '{
+                "userName": "'"$USERNAME"'",
+                "profile": {
+                  "firstName": "Zitadel",
+                  "lastName": "Admin"
+                },
+                "email": {
+                  "email": "'"$USERNAME"'",
+                  "isEmailVerified": true
+                },
+                "password": "'"$PASSWORD"'",
+                "passwordChangeRequired": true
+          }'
+      )
+      PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.userId')
+      handle_zitadel_request_response "$PARSED_RESPONSE" "create_admin_user" "$RESPONSE"
+      echo "$PARSED_RESPONSE"
+}
+
+add_instance_admin() {
+  INSTANCE_URL=$1
+  PAT=$2
+  USER_ID=$3
+
+  RESPONSE=$(
+    curl -sS -X POST "$INSTANCE_URL/admin/v1/members" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+      -d '{
+            "userId": "'"$USER_ID"'",
+            "roles": [
+              "IAM_OWNER"
+            ]
+      }'
+  )
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.details.creationDate')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "add_instance_admin" "$RESPONSE"
+  echo "$PARSED_RESPONSE"
+}
+
+delete_auto_service_user() {
+  INSTANCE_URL=$1
+  PAT=$2
+
+  RESPONSE=$(
+    curl -sS -X GET "$INSTANCE_URL/auth/v1/users/me" \
+      -H "Authorization: Bearer $PAT" \
+      -H "Content-Type: application/json" \
+  )
+  USER_ID=$(echo "$RESPONSE" | jq -r '.user.id')
+  handle_zitadel_request_response "$USER_ID" "delete_auto_service_user_get_user" "$RESPONSE"
+
+  RESPONSE=$(
+      curl -sS -X DELETE "$INSTANCE_URL/admin/v1/members/$USER_ID" \
+        -H "Authorization: Bearer $PAT" \
+        -H "Content-Type: application/json" \
+  )
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.details.changeDate')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "delete_auto_service_user_remove_instance_permissions" "$RESPONSE"
+
+  RESPONSE=$(
+      curl -sS -X DELETE "$INSTANCE_URL/management/v1/orgs/me/members/$USER_ID" \
+        -H "Authorization: Bearer $PAT" \
+        -H "Content-Type: application/json" \
+  )
+  PARSED_RESPONSE=$(echo "$RESPONSE" | jq -r '.details.changeDate')
+  handle_zitadel_request_response "$PARSED_RESPONSE" "delete_auto_service_user_remove_org_permissions" "$RESPONSE"
+  echo "$PARSED_RESPONSE"
+}
+
+init_zitadel() {
+  echo -e "\nInitializing Zitadel with NetBird's applications\n"
+  INSTANCE_URL="$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT"
+
+  TOKEN_PATH=./machinekey/zitadel-admin-sa.token
+
+  echo -n "Waiting for Zitadel's PAT to be created "
+  wait_pat "$TOKEN_PATH"
+  echo "Reading Zitadel PAT"
+  PAT=$(cat $TOKEN_PATH)
+  if [ "$PAT" = "null" ]; then
+    echo "Failed requesting getting Zitadel PAT"
+    exit 1
+  fi
+
+  echo -n "Waiting for Zitadel to become ready "
+  wait_api "$INSTANCE_URL" "$PAT"
+
+  #  create the zitadel project
+  echo "Creating new zitadel project"
+  PROJECT_ID=$(create_new_project "$INSTANCE_URL" "$PAT")
+
+  ZITADEL_DEV_MODE=false
+  BASE_REDIRECT_URL=$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN
+  if [[ $NETBIRD_HTTP_PROTOCOL == "http" ]]; then
+    ZITADEL_DEV_MODE=true
+  fi
+
+  # create zitadel spa applications
+  echo "Creating new Zitadel SPA Dashboard application"
+  DASHBOARD_APPLICATION_CLIENT_ID=$(create_new_application "$INSTANCE_URL" "$PAT" "Dashboard" "$BASE_REDIRECT_URL/nb-auth" "$BASE_REDIRECT_URL/nb-silent-auth" "$ZITADEL_DEV_MODE")
+
+  echo "Creating new Zitadel SPA Cli application"
+  CLI_APPLICATION_CLIENT_ID=$(create_new_application "$INSTANCE_URL" "$PAT" "Cli" "http://localhost:53000/" "http://localhost:54000/" "true")
+
+  MACHINE_USER_ID=$(create_service_user "$INSTANCE_URL" "$PAT")
+
+  SERVICE_USER_CLIENT_ID="null"
+  SERVICE_USER_CLIENT_SECRET="null"
+
+  create_service_user_secret "$INSTANCE_URL" "$PAT" "$MACHINE_USER_ID"
+
+  DATE=$(add_organization_user_manager "$INSTANCE_URL" "$PAT" "$MACHINE_USER_ID")
+
+  ZITADEL_ADMIN_USERNAME="admin@$NETBIRD_DOMAIN"
+  ZITADEL_ADMIN_PASSWORD="$(openssl rand -base64 32 | sed 's/=//g')@"
+
+  HUMAN_USER_ID=$(create_admin_user "$INSTANCE_URL" "$PAT" "$ZITADEL_ADMIN_USERNAME" "$ZITADEL_ADMIN_PASSWORD")
+
+  DATE="null"
+
+  DATE=$(add_instance_admin "$INSTANCE_URL" "$PAT" "$HUMAN_USER_ID")
+
+  DATE="null"
+  DATE=$(delete_auto_service_user "$INSTANCE_URL" "$PAT")
+  if [ "$DATE" = "null" ]; then
+      echo "Failed deleting auto service user"
+      echo "Please remove it manually"
+  fi
+
+  export NETBIRD_AUTH_CLIENT_ID=$DASHBOARD_APPLICATION_CLIENT_ID
+  export NETBIRD_AUTH_CLIENT_ID_CLI=$CLI_APPLICATION_CLIENT_ID
+  export NETBIRD_IDP_MGMT_CLIENT_ID=$SERVICE_USER_CLIENT_ID
+  export NETBIRD_IDP_MGMT_CLIENT_SECRET=$SERVICE_USER_CLIENT_SECRET
+  export ZITADEL_ADMIN_USERNAME
+  export ZITADEL_ADMIN_PASSWORD
+}
+
+initEnvironment() {
+  CADDY_SECURE_DOMAIN=""
+  ZITADEL_EXTERNALSECURE="false"
+  ZITADEL_TLS_MODE="disabled"
+  ZITADEL_MASTERKEY="$(openssl rand -base64 32 | head -c 32)"
+  USING_DOMAIN="true"
+  NETBIRD_PORT=80
+  NETBIRD_HTTP_PROTOCOL="http"
+  TURN_USER="self"
+  TURN_PASSWORD=$(openssl rand -base64 32 | sed 's/=//g')
+  TURN_MIN_PORT=49152
+  TURN_MAX_PORT=65535
+
+  NETBIRD_DOMAIN=$NETBIRD_DOMAIN
+  if [ "$NETBIRD_DOMAIN-x" == "-x" ] ; then
+    echo "NETBIRD_DOMAIN is not set, using the main IP address"
+    NETBIRD_DOMAIN=$(get_main_ip_address)
+    USING_DOMAIN="false"
+  fi
+
+  if [ "$NETBIRD_DOMAIN" == "localhost" ]; then
+    USING_DOMAIN="false"
+  fi
+
+  if [ $USING_DOMAIN == "true" ]; then
+    ZITADEL_EXTERNALSECURE="true"
+    ZITADEL_TLS_MODE="external"
+    NETBIRD_PORT=443
+    CADDY_SECURE_DOMAIN=", $NETBIRD_DOMAIN:$NETBIRD_PORT"
+    NETBIRD_HTTP_PROTOCOL="https"
+  fi
+
+  if [[ "$OSTYPE" == "darwin"* ]]; then
+      ZIDATE_TOKEN_EXPIRATION_DATE=$(date -u -v+30M "+%Y-%m-%dT%H:%M:%SZ")
+  else
+      ZIDATE_TOKEN_EXPIRATION_DATE=$(date -u -d "+30 minutes" "+%Y-%m-%dT%H:%M:%SZ")
+  fi
+
+  check_jq
+
+  DOCKER_COMPOSE_COMMAND=$(check_docker_compose)
+
+  if [ -f zitadel.env ]; then
+    echo "Generated files already exist, if you want to reinitialize the environment, please remove them first."
+    echo "You can use the following commands:"
+    echo "  $DOCKER_COMPOSE_COMMAND down --volumes # to remove all containers and volumes"
+    echo "  rm -f docker-compose.yml Caddyfile zitadel.env dashboard.env machinekey/zitadel-admin-sa.token turnserver.conf management.json"
+    echo "Be aware that this will remove all data from the database, and you will have to reconfigure the dashboard."
+    exit 1
+  fi
+
+  echo Rendering initial files...
+  renderDockerCompose > docker-compose.yml
+  renderCaddyfile > Caddyfile
+  renderZitadelEnv > zitadel.env
+  echo "" > dashboard.env
+  echo "" > turnserver.conf
+  echo "" > management.json
+
+  mkdir -p machinekey
+  chmod 777 machinekey
+
+  init_pgdb
+
+  echo -e "\nStarting Zidatel IDP for user management\n\n"
+  $DOCKER_COMPOSE_COMMAND up -d caddy zitadel
+  init_zitadel
+
+  echo -e "\nRendering NetBird files...\n"
+  renderTurnServerConf > turnserver.conf
+  renderManagementJson > management.json
+  renderDashboardEnv > dashboard.env
+
+  echo -e "\nStarting NetBird services\n"
+  $DOCKER_COMPOSE_COMMAND up -d
+  echo -e "\nDone!\n"
+  echo "You can access the NetBird dashboard at $NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT"
+  echo "Login with the following credentials:"
+  echo "Username: $ZITADEL_ADMIN_USERNAME" | tee .env
+  echo "Password: $ZITADEL_ADMIN_PASSWORD" | tee -a .env
+}
+
+renderCaddyfile() {
+  cat <<EOF
+{
+  debug
+	servers :80,:443 {
+    protocols h1 h2c
+  }
+}
+
+:80${CADDY_SECURE_DOMAIN} {
+    # Signal
+    reverse_proxy /signalexchange.SignalExchange/* h2c://signal:10000
+    # Management
+    reverse_proxy /api/* management:80
+    reverse_proxy /management.ManagementService/* h2c://management:80
+    # Zitadel
+    reverse_proxy /zitadel.admin.v1.AdminService/* h2c://zitadel:8080
+    reverse_proxy /admin/v1/* h2c://zitadel:8080
+    reverse_proxy /zitadel.auth.v1.AuthService/* h2c://zitadel:8080
+    reverse_proxy /auth/v1/* h2c://zitadel:8080
+    reverse_proxy /zitadel.management.v1.ManagementService/* h2c://zitadel:8080
+    reverse_proxy /management/v1/* h2c://zitadel:8080
+    reverse_proxy /zitadel.system.v1.SystemService/* h2c://zitadel:8080
+    reverse_proxy /system/v1/* h2c://zitadel:8080
+    reverse_proxy /assets/v1/* h2c://zitadel:8080
+    reverse_proxy /ui/* h2c://zitadel:8080
+    reverse_proxy /oidc/v1/* h2c://zitadel:8080
+    reverse_proxy /saml/v2/* h2c://zitadel:8080
+    reverse_proxy /oauth/v2/* h2c://zitadel:8080
+    reverse_proxy /.well-known/openid-configuration h2c://zitadel:8080
+    reverse_proxy /openapi/* h2c://zitadel:8080
+    reverse_proxy /debug/* h2c://zitadel:8080
+    # Dashboard
+    reverse_proxy /* dashboard:80
+}
+EOF
+}
+
+renderTurnServerConf() {
+  cat <<EOF
+listening-port=3478
+tls-listening-port=5349
+min-port=$TURN_MIN_PORT
+max-port=$TURN_MAX_PORT
+fingerprint
+lt-cred-mech
+user=$TURN_USER:$TURN_PASSWORD
+realm=wiretrustee.com
+cert=/etc/coturn/certs/cert.pem
+pkey=/etc/coturn/private/privkey.pem
+log-file=stdout
+no-software-attribute
+pidfile="/var/tmp/turnserver.pid"
+no-cli
+EOF
+}
+
+renderManagementJson() {
+  cat <<EOF
+{
+    "Stuns": [
+        {
+            "Proto": "udp",
+            "URI": "stun:$NETBIRD_DOMAIN:3478"
+        }
+    ],
+    "TURNConfig": {
+        "Turns": [
+            {
+                "Proto": "udp",
+                "URI": "turn:$NETBIRD_DOMAIN:3478",
+                "Username": "$TURN_USER",
+                "Password": "$TURN_PASSWORD"
+            }
+        ],
+        "TimeBasedCredentials": false
+    },
+    "Signal": {
+        "Proto": "$NETBIRD_HTTP_PROTOCOL",
+        "URI": "$NETBIRD_DOMAIN:$NETBIRD_PORT"
+    },
+    "HttpConfig": {
+        "AuthIssuer": "$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN",
+        "AuthAudience": "$NETBIRD_AUTH_CLIENT_ID",
+        "OIDCConfigEndpoint":"$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN/.well-known/openid-configuration"
+    },
+    "IdpManagerConfig": {
+        "ManagerType": "zitadel",
+        "ClientConfig": {
+            "Issuer": "$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT",
+            "TokenEndpoint": "$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT/oauth/v2/token",
+            "ClientID": "$NETBIRD_IDP_MGMT_CLIENT_ID",
+            "ClientSecret": "$NETBIRD_IDP_MGMT_CLIENT_SECRET",
+            "GrantType": "client_credentials"
+        },
+        "ExtraConfig": {
+            "ManagementEndpoint": "$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT/management/v1"
+        }
+     },
+    "PKCEAuthorizationFlow": {
+        "ProviderConfig": {
+            "Audience": "$NETBIRD_AUTH_CLIENT_ID_CLI",
+            "ClientID": "$NETBIRD_AUTH_CLIENT_ID_CLI",
+            "Scope": "openid profile email offline_access",
+            "RedirectURLs": ["http://localhost:53000/","http://localhost:54000/"]
+        }
+    }
+}
+EOF
+}
+
+renderDashboardEnv() {
+  cat <<EOF
+# Endpoints
+NETBIRD_MGMT_API_ENDPOINT=$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT
+NETBIRD_MGMT_GRPC_API_ENDPOINT=$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT
+# OIDC
+AUTH_AUDIENCE=$NETBIRD_AUTH_CLIENT_ID
+AUTH_CLIENT_ID=$NETBIRD_AUTH_CLIENT_ID
+AUTH_AUTHORITY=$NETBIRD_HTTP_PROTOCOL://$NETBIRD_DOMAIN:$NETBIRD_PORT
+USE_AUTH0=false
+AUTH_SUPPORTED_SCOPES="openid profile email offline_access"
+AUTH_REDIRECT_URI=/nb-auth
+AUTH_SILENT_REDIRECT_URI=/nb-silent-auth
+# SSL
+NGINX_SSL_PORT=443
+# Letsencrypt
+LETSENCRYPT_DOMAIN=none
+EOF
+}
+
+renderZitadelEnv() {
+  cat <<EOF
+ZITADEL_LOG_LEVEL=debug
+ZITADEL_MASTERKEY=$ZITADEL_MASTERKEY
+#ZITADEL_DATABASE_COCKROACH_HOST=pgdb
+#ZITADEL_DATABASE_COCKROACH_USER_USERNAME=zitadel_user
+#ZITADEL_DATABASE_COCKROACH_USER_SSL_MODE=verify-full
+#ZITADEL_DATABASE_COCKROACH_USER_SSL_ROOTCERT="/pgdb-certs/ca.crt"
+#ZITADEL_DATABASE_COCKROACH_USER_SSL_CERT="/pgdb-certs/client.zitadel_user.crt"
+#ZITADEL_DATABASE_COCKROACH_USER_SSL_KEY="/pgdb-certs/client.zitadel_user.key"
+#ZITADEL_DATABASE_COCKROACH_ADMIN_SSL_MODE=verify-full
+#ZITADEL_DATABASE_COCKROACH_ADMIN_SSL_ROOTCERT="/pgdb-certs/ca.crt"
+#ZITADEL_DATABASE_COCKROACH_ADMIN_SSL_CERT="/pgdb-certs/client.root.crt"
+#ZITADEL_DATABASE_COCKROACH_ADMIN_SSL_KEY="/pgdb-certs/client.root.key"
+ZITADEL_DATABASE_POSTGRES_HOST=pgdb
+ZITADEL_DATABASE_POSTGRES_PORT=5432
+ZITADEL_DATABASE_POSTGRES_DATABASE=zitadeldb
+ZITADEL_DATABASE_POSTGRES_ADMIN_USERNAME=zitadeladmin
+ZITADEL_DATABASE_POSTGRES_ADMIN_PASSWORD=zitadeladmin
+ZITADEL_DATABASE_POSTGRES_ADMIN_SSL_MODE=disable
+ZITADEL_DATABASE_POSTGRES_USER_USERNAME=zitadeluser
+ZITADEL_DATABASE_POSTGRES_USER_PASSWORD=zitadeluser
+ZITADEL_DATABASE_POSTGRES_USER_SSL_MODE=disable
+ZITADEL_EXTERNALSECURE=$ZITADEL_EXTERNALSECURE
+ZITADEL_TLS_ENABLED="false"
+ZITADEL_EXTERNALPORT=$NETBIRD_PORT
+ZITADEL_EXTERNALDOMAIN=$NETBIRD_DOMAIN
+ZITADEL_FIRSTINSTANCE_PATPATH=/machinekey/zitadel-admin-sa.token
+ZITADEL_FIRSTINSTANCE_ORG_MACHINE_MACHINE_USERNAME=zitadel-admin-sa
+ZITADEL_FIRSTINSTANCE_ORG_MACHINE_MACHINE_NAME=Admin
+ZITADEL_FIRSTINSTANCE_ORG_MACHINE_PAT_SCOPES=openid
+ZITADEL_FIRSTINSTANCE_ORG_MACHINE_PAT_EXPIRATIONDATE=$ZIDATE_TOKEN_EXPIRATION_DATE
+EOF
+}
+
+renderDockerCompose() {
+  cat <<EOF
+version: "3.4"
+services:
+  # Caddy reverse proxy
+  caddy:
+    image: caddy
+    restart: unless-stopped
+    networks: [ netbird ]
+    ports:
+      - '443:443'
+      - '80:80'
+      - '8080:8080'
+    volumes:
+      - netbird_caddy_data:/data
+      - ./Caddyfile:/etc/caddy/Caddyfile
+  #UI dashboard
+  dashboard:
+    image: wiretrustee/dashboard:latest
+    restart: unless-stopped
+    networks: [netbird]
+    env_file:
+      - ./dashboard.env
+  # Signal
+  signal:
+    image: netbirdio/signal:latest
+    restart: unless-stopped
+    networks: [netbird]
+  # Management
+  management:
+    image: netbirdio/management:latest
+    restart: unless-stopped
+    networks: [netbird]
+    volumes:
+      - netbird_management:/var/lib/netbird
+      - ./management.json:/etc/netbird/management.json
+    command: [
+      "--port", "80",
+      "--log-file", "console",
+      "--log-level", "debug",
+      "--disable-anonymous-metrics=false",
+      "--single-account-mode-domain=netbird.selfhosted",
+      "--dns-domain=netbird.selfhosted",
+    ]
+  # Coturn, AKA relay server
+  coturn:
+    image: coturn/coturn
+    restart: unless-stopped
+    domainname: netbird.relay.selfhosted
+    volumes:
+      - ./turnserver.conf:/etc/turnserver.conf:ro
+    network_mode: host
+    command:
+      - -c /etc/turnserver.conf
+  # Zitadel - identity provider
+  zitadel:
+    restart: 'always'
+    networks: [netbird]
+    image: 'ghcr.io/zitadel/zitadel:v2.31.3'
+    command: 'start-from-init --masterkeyFromEnv --tlsMode $ZITADEL_TLS_MODE'
+    env_file:
+      - ./zitadel.env
+    depends_on:
+      pgdb:
+        condition: 'service_healthy'
+    volumes:
+      - ./machinekey:/machinekey
+      - netbird_zitadel_certs:/pgdb-certs:ro
+    healthcheck:
+      test: [ "CMD", "curl", "-f", "http://localhost:8080/debug/healthz" ]
+      interval: '10s'
+      timeout: '30s'
+      retries: 5
+      start_period: '20s'
+  # CockroachDB for zitadel
+  pgdb:
+    restart: 'always'
+    networks: [netbird]
+    image: 'postgres:15'
+    environment:
+      - POSTGRES_USER=zitadeladmin
+      - POSTGRES_PASSWORD=zitadeladmin
+      - POSTGRES_DB=zitadeldb
+    #command: 'start-single-node --advertise-addr pgdb'
+    volumes:
+      - netbird_pgdb_data:/cockroach/cockroach-data
+      - netbird_pgdb_certs:/cockroach/certs
+      - netbird_zitadel_certs:/zitadel-certs
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: '10s'
+      timeout: '30s'
+      retries: 5
+      start_period: '20s'
+
+volumes:
+  netbird_management:
+  netbird_caddy_data:
+  netbird_pgdb_data:
+  netbird_pgdb_certs:
+  netbird_zitadel_certs:
+
+networks:
+  netbird:
+EOF
+}
+
+initEnvironment

infrastructure_files/management.json.tmpl

@@ -59,5 +59,17 @@
           "Scope": "$NETBIRD_AUTH_DEVICE_AUTH_SCOPE",
           "UseIDToken": $NETBIRD_AUTH_DEVICE_AUTH_USE_ID_TOKEN
          }
+    },
+    "PKCEAuthorizationFlow": {
+        "ProviderConfig": {
+            "Audience": "$NETBIRD_AUTH_AUDIENCE",
+            "ClientID": "$NETBIRD_AUTH_CLIENT_ID",
+            "ClientSecret": "$NETBIRD_AUTH_CLIENT_SECRET",
+            "AuthorizationEndpoint": "$NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT",
+            "TokenEndpoint": "$NETBIRD_AUTH_TOKEN_ENDPOINT",
+            "Scope": "$NETBIRD_AUTH_SUPPORTED_SCOPES",
+            "RedirectURLs": [$NETBIRD_AUTH_PKCE_REDIRECT_URLS],
+            "UseIDToken": $NETBIRD_AUTH_PKCE_USE_ID_TOKEN
+        }
     }
 }

infrastructure_files/setup.env.example

@@ -37,6 +37,12 @@ NETBIRD_AUTH_DEVICE_AUTH_AUDIENCE=$NETBIRD_AUTH_AUDIENCE
 NETBIRD_AUTH_DEVICE_AUTH_SCOPE="openid"
 NETBIRD_AUTH_DEVICE_AUTH_USE_ID_TOKEN=false
 # -------------------------------------------
+# OIDC PKCE Authorization Flow
+# -------------------------------------------
+# Comma separated port numbers. if already in use, PKCE flow will choose an available port from the list as an alternative
+# eg. 53000,54000
+NETBIRD_AUTH_PKCE_REDIRECT_URL_PORTS="53000"
+# -------------------------------------------
 # IDP Management
 # -------------------------------------------
 # eg. zitadel, auth0, azure, keycloak

infrastructure_files/zitadel.sh

@@ -1,122 +0,0 @@
-#!/bin/bash
-
-set -e
-
-request_jwt_token() {
-  INSTANCE_URL=$1
-  BODY="grant_type=client_credentials&scope=urn:zitadel:iam:org:project:id:zitadel:aud&client_id=$ZITADEL_CLIENT_ID&client_secret=$ZITADEL_CLIENT_SECRET"
-
-  RESPONSE=$(
-    curl -X POST "$INSTANCE_URL/oauth/v2/token" \
-      -H "Content-Type: application/x-www-form-urlencoded" \
-      -d "$BODY"
-  )
-  echo "$RESPONSE" | jq -r '.access_token'
-}
-
-create_new_project() {
-  INSTANCE_URL=$1
-  ACCESS_TOKEN=$2
-  PROJECT_NAME="NETBIRD"
-
-  RESPONSE=$(
-    curl -X POST "$INSTANCE_URL/management/v1/projects" \
-      -H "Authorization: Bearer $ACCESS_TOKEN" \
-      -H "Content-Type: application/json" \
-      -d '{"name": "'"$PROJECT_NAME"'"}'
-  )
-  echo "$RESPONSE" | jq -r '.id'
-}
-
-create_new_application() {
-  INSTANCE_URL=$1
-  ACCESS_TOKEN=$2
-  APPLICATION_NAME="netbird"
-
-  RESPONSE=$(
-    curl -X POST "$INSTANCE_URL/management/v1/projects/$PROJECT_ID/apps/oidc" \
-      -H "Authorization: Bearer $ACCESS_TOKEN" \
-      -H "Content-Type: application/json" \
-      -d '{
-    "name": "'"$APPLICATION_NAME"'",
-    "redirectUris": [
-      "'"$BASE_REDIRECT_URL"'/auth"
-    ],
-    "RESPONSETypes": [
-      "OIDC_RESPONSE_TYPE_CODE"
-    ],
-    "grantTypes": [
-      "OIDC_GRANT_TYPE_AUTHORIZATION_CODE",
-      "OIDC_GRANT_TYPE_REFRESH_TOKEN"
-    ],
-    "appType": "OIDC_APP_TYPE_USER_AGENT",
-    "authMethodType": "OIDC_AUTH_METHOD_TYPE_NONE",
-    "postLogoutRedirectUris": [
-      "'"$BASE_REDIRECT_URL"'/silent-auth"
-    ],
-    "version": "OIDC_VERSION_1_0",
-    "devMode": '"$ZITADEL_DEV_MODE"',
-    "accessTokenType": "OIDC_TOKEN_TYPE_JWT",
-    "accessTokenRoleAssertion": true,
-    "skipNativeAppSuccessPage": true
-  }'
-  )
-  echo "$RESPONSE" | jq -r '.clientId'
-}
-
-configure_zitadel_instance() {
-  # extract zitadel instance url
-  INSTANCE_URL=$(echo "$NETBIRD_AUTH_OIDC_CONFIGURATION_ENDPOINT" | sed 's/\/\.well-known\/openid-configuration//')
-  DOC_URL="https://netbird.io/docs/integrations/identity-providers/self-hosted/using-netbird-with-zitadel#step-4-create-a-service-user"
-
-  echo ""
-  printf "configuring zitadel instance: $INSTANCE_URL \n \
-  before proceeding, please create a new service account for authorization by following the instructions (step 4 and 5
-  ) in the documentation at %s\n" "$DOC_URL"
-  echo "Please ensure that the new service account has 'Org Owner' permission in order for this to work."
-  echo ""
-
-  read -n 1 -s -r -p "press any key to continue..."
-  echo ""
-
-  # prompt the user to enter service account clientID
-  echo ""
-  read -r -p "enter service account ClientId: " ZITADEL_CLIENT_ID
-  echo ""
-
-  # Prompt the user to enter service account clientSecret
-  read -r -p "enter service account ClientSecret: " ZITADEL_CLIENT_SECRET
-  echo ""
-
-  # get an access token from zitadel
-  echo "retrieving access token from zitadel"
-  ACCESS_TOKEN=$(request_jwt_token "$INSTANCE_URL")
-  if [ "$ACCESS_TOKEN" = "null" ]; then
-    echo "failed requesting access token"
-    exit 1
-  fi
-
-  #  create the zitadel project
-  echo "creating new zitadel project"
-  PROJECT_ID=$(create_new_project "$INSTANCE_URL" "$ACCESS_TOKEN")
-  if [ "$PROJECT_ID" = "null" ]; then
-    echo "failed creating new zitadel project"
-    exit 1
-  fi
-
-  ZITADEL_DEV_MODE=false
-  if [[ $NETBIRD_DOMAIN == *"localhost"* ]]; then
-    BASE_REDIRECT_URL="http://$NETBIRD_DOMAIN"
-    ZITADEL_DEV_MODE=true
-  else
-    BASE_REDIRECT_URL="https://$NETBIRD_DOMAIN"
-  fi
-
-  # create zitadel spa application
-  echo "creating new zitadel spa application"
-  APPLICATION_CLIENT_ID=$(create_new_application "$INSTANCE_URL" "$ACCESS_TOKEN")
-  if [ "$APPLICATION_CLIENT_ID" = "null" ]; then
-    echo "failed creating new zitadel spa application"
-    exit 1
-  fi
-}

management/client/client.go

@@ -15,5 +15,6 @@ type Client interface {
 	Register(serverKey wgtypes.Key, setupKey string, jwtToken string, sysInfo *system.Info, sshKey []byte) (*proto.LoginResponse, error)
 	Login(serverKey wgtypes.Key, sysInfo *system.Info, sshKey []byte) (*proto.LoginResponse, error)
 	GetDeviceAuthorizationFlow(serverKey wgtypes.Key) (*proto.DeviceAuthorizationFlow, error)
+	GetPKCEAuthorizationFlow(serverKey wgtypes.Key) (*proto.PKCEAuthorizationFlow, error)
 	GetNetworkMap() (*proto.NetworkMap, error)
 }

management/client/client_test.go

@@ -400,3 +400,49 @@ func Test_GetDeviceAuthorizationFlow(t *testing.T) {
 	assert.Equal(t, expectedFlowInfo.Provider, flowInfo.Provider, "provider should match")
 	assert.Equal(t, expectedFlowInfo.ProviderConfig.ClientID, flowInfo.ProviderConfig.ClientID, "provider configured client ID should match")
 }
+
+func Test_GetPKCEAuthorizationFlow(t *testing.T) {
+	s, lis, mgmtMockServer, serverKey := startMockManagement(t)
+	defer s.GracefulStop()
+
+	testKey, err := wgtypes.GenerateKey()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	serverAddr := lis.Addr().String()
+	ctx := context.Background()
+
+	client, err := NewClient(ctx, serverAddr, testKey, false)
+	if err != nil {
+		log.Fatalf("error while creating testClient: %v", err)
+	}
+
+	expectedFlowInfo := &proto.PKCEAuthorizationFlow{
+		ProviderConfig: &proto.ProviderConfig{
+			ClientID:     "client",
+			ClientSecret: "secret",
+		},
+	}
+
+	mgmtMockServer.GetPKCEAuthorizationFlowFunc = func(ctx context.Context, req *mgmtProto.EncryptedMessage) (*proto.EncryptedMessage, error) {
+		encryptedResp, err := encryption.EncryptMessage(serverKey, client.key, expectedFlowInfo)
+		if err != nil {
+			return nil, err
+		}
+
+		return &mgmtProto.EncryptedMessage{
+			WgPubKey: serverKey.PublicKey().String(),
+			Body:     encryptedResp,
+			Version:  0,
+		}, nil
+	}
+
+	flowInfo, err := client.GetPKCEAuthorizationFlow(serverKey)
+	if err != nil {
+		t.Error("error while retrieving pkce auth flow information")
+	}
+
+	assert.Equal(t, expectedFlowInfo.ProviderConfig.ClientID, flowInfo.ProviderConfig.ClientID, "provider configured client ID should match")
+	assert.Equal(t, expectedFlowInfo.ProviderConfig.ClientSecret, flowInfo.ProviderConfig.ClientSecret, "provider configured client secret should match")
+}

management/client/grpc.go

@@ -366,6 +366,40 @@ func (c *GrpcClient) GetDeviceAuthorizationFlow(serverKey wgtypes.Key) (*proto.D
 	return flowInfoResp, nil
 }
 
+// GetPKCEAuthorizationFlow returns a pkce authorization flow information.
+// It also takes care of encrypting and decrypting messages.
+func (c *GrpcClient) GetPKCEAuthorizationFlow(serverKey wgtypes.Key) (*proto.PKCEAuthorizationFlow, error) {
+	if !c.ready() {
+		return nil, fmt.Errorf("no connection to management in order to get pkce authorization flow")
+	}
+	mgmCtx, cancel := context.WithTimeout(c.ctx, time.Second*2)
+	defer cancel()
+
+	message := &proto.PKCEAuthorizationFlowRequest{}
+	encryptedMSG, err := encryption.EncryptMessage(serverKey, c.key, message)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := c.realClient.GetPKCEAuthorizationFlow(mgmCtx, &proto.EncryptedMessage{
+		WgPubKey: c.key.PublicKey().String(),
+		Body:     encryptedMSG,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	flowInfoResp := &proto.PKCEAuthorizationFlow{}
+	err = encryption.DecryptMessage(serverKey, c.key, resp.Body, flowInfoResp)
+	if err != nil {
+		errWithMSG := fmt.Errorf("failed to decrypt pkce authorization flow message: %s", err)
+		log.Error(errWithMSG)
+		return nil, errWithMSG
+	}
+
+	return flowInfoResp, nil
+}
+
 func (c *GrpcClient) notifyDisconnected() {
 	c.connStateCallbackLock.RLock()
 	defer c.connStateCallbackLock.RUnlock()

management/client/mock.go

@@ -13,6 +13,7 @@ type MockClient struct {
 	RegisterFunc                   func(serverKey wgtypes.Key, setupKey string, jwtToken string, info *system.Info, sshKey []byte) (*proto.LoginResponse, error)
 	LoginFunc                      func(serverKey wgtypes.Key, info *system.Info, sshKey []byte) (*proto.LoginResponse, error)
 	GetDeviceAuthorizationFlowFunc func(serverKey wgtypes.Key) (*proto.DeviceAuthorizationFlow, error)
+	GetPKCEAuthorizationFlowFunc   func(serverKey wgtypes.Key) (*proto.PKCEAuthorizationFlow, error)
 }
 
 func (m *MockClient) Close() error {
@@ -57,6 +58,13 @@ func (m *MockClient) GetDeviceAuthorizationFlow(serverKey wgtypes.Key) (*proto.D
 	return m.GetDeviceAuthorizationFlowFunc(serverKey)
 }
 
+func (m *MockClient) GetPKCEAuthorizationFlow(serverKey wgtypes.Key) (*proto.PKCEAuthorizationFlow, error) {
+	if m.GetPKCEAuthorizationFlowFunc == nil {
+		return nil, nil
+	}
+	return m.GetPKCEAuthorizationFlow(serverKey)
+}
+
 // GetNetworkMap mock implementation of GetNetworkMap from mgm.Client interface
 func (m *MockClient) GetNetworkMap() (*proto.NetworkMap, error) {
 	return nil, nil

management/cmd/management.go

@@ -426,6 +426,15 @@ func loadMgmtConfig(mgmtConfigPath string) (*server.Config, error) {
 				config.DeviceAuthorizationFlow.ProviderConfig.Scope = server.DefaultDeviceAuthFlowScope
 			}
 		}
+
+		if config.PKCEAuthorizationFlow != nil {
+			log.Infof("overriding PKCEAuthorizationFlow.TokenEndpoint with a new value: %s, previously configured value: %s",
+				oidcConfig.TokenEndpoint, config.PKCEAuthorizationFlow.ProviderConfig.TokenEndpoint)
+			config.DeviceAuthorizationFlow.ProviderConfig.TokenEndpoint = oidcConfig.TokenEndpoint
+			log.Infof("overriding PKCEAuthorizationFlow.AuthorizationEndpoint with a new value: %s, previously configured value: %s",
+				oidcConfig.AuthorizationEndpoint, config.PKCEAuthorizationFlow.ProviderConfig.AuthorizationEndpoint)
+			config.PKCEAuthorizationFlow.ProviderConfig.AuthorizationEndpoint = oidcConfig.AuthorizationEndpoint
+		}
 	}
 
 	return config, err
@@ -433,10 +442,11 @@ func loadMgmtConfig(mgmtConfigPath string) (*server.Config, error) {
 
 // OIDCConfigResponse used for parsing OIDC config response
 type OIDCConfigResponse struct {
-	Issuer             string `json:"issuer"`
-	TokenEndpoint      string `json:"token_endpoint"`
-	DeviceAuthEndpoint string `json:"device_authorization_endpoint"`
-	JwksURI            string `json:"jwks_uri"`
+	Issuer                string `json:"issuer"`
+	TokenEndpoint         string `json:"token_endpoint"`
+	DeviceAuthEndpoint    string `json:"device_authorization_endpoint"`
+	JwksURI               string `json:"jwks_uri"`
+	AuthorizationEndpoint string `json:"authorization_endpoint"`
 }
 
 // fetchOIDCConfig fetches OIDC configuration from the IDP

management/proto/management.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.26.0
-// 	protoc        v3.21.9
+// 	protoc        v3.21.12
 // source: management.proto
 
 package proto
@@ -162,7 +162,7 @@ func (x FirewallRuleDirection) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use FirewallRuleDirection.Descriptor instead.
 func (FirewallRuleDirection) EnumDescriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{25, 0}
+	return file_management_proto_rawDescGZIP(), []int{27, 0}
 }
 
 type FirewallRuleAction int32
@@ -208,7 +208,7 @@ func (x FirewallRuleAction) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use FirewallRuleAction.Descriptor instead.
 func (FirewallRuleAction) EnumDescriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{25, 1}
+	return file_management_proto_rawDescGZIP(), []int{27, 1}
 }
 
 type FirewallRuleProtocol int32
@@ -263,7 +263,7 @@ func (x FirewallRuleProtocol) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use FirewallRuleProtocol.Descriptor instead.
 func (FirewallRuleProtocol) EnumDescriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{25, 2}
+	return file_management_proto_rawDescGZIP(), []int{27, 2}
 }
 
 type EncryptedMessage struct {
@@ -1477,7 +1477,96 @@ func (x *DeviceAuthorizationFlow) GetProviderConfig() *ProviderConfig {
 	return nil
 }
 
-// ProviderConfig has all attributes needed to initiate a device authorization flow
+// PKCEAuthorizationFlowRequest empty struct for future expansion
+type PKCEAuthorizationFlowRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *PKCEAuthorizationFlowRequest) Reset() {
+	*x = PKCEAuthorizationFlowRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_management_proto_msgTypes[18]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PKCEAuthorizationFlowRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PKCEAuthorizationFlowRequest) ProtoMessage() {}
+
+func (x *PKCEAuthorizationFlowRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_management_proto_msgTypes[18]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PKCEAuthorizationFlowRequest.ProtoReflect.Descriptor instead.
+func (*PKCEAuthorizationFlowRequest) Descriptor() ([]byte, []int) {
+	return file_management_proto_rawDescGZIP(), []int{18}
+}
+
+// PKCEAuthorizationFlow represents Authorization Code Flow information
+// that can be used by the client to login initiate a Oauth 2.0 authorization code grant flow
+// with Proof Key for Code Exchange (PKCE). See https://datatracker.ietf.org/doc/html/rfc7636
+type PKCEAuthorizationFlow struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ProviderConfig *ProviderConfig `protobuf:"bytes,1,opt,name=ProviderConfig,proto3" json:"ProviderConfig,omitempty"`
+}
+
+func (x *PKCEAuthorizationFlow) Reset() {
+	*x = PKCEAuthorizationFlow{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_management_proto_msgTypes[19]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PKCEAuthorizationFlow) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PKCEAuthorizationFlow) ProtoMessage() {}
+
+func (x *PKCEAuthorizationFlow) ProtoReflect() protoreflect.Message {
+	mi := &file_management_proto_msgTypes[19]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PKCEAuthorizationFlow.ProtoReflect.Descriptor instead.
+func (*PKCEAuthorizationFlow) Descriptor() ([]byte, []int) {
+	return file_management_proto_rawDescGZIP(), []int{19}
+}
+
+func (x *PKCEAuthorizationFlow) GetProviderConfig() *ProviderConfig {
+	if x != nil {
+		return x.ProviderConfig
+	}
+	return nil
+}
+
+// ProviderConfig has all attributes needed to initiate a device/pkce authorization flow
 type ProviderConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1500,12 +1589,16 @@ type ProviderConfig struct {
 	Scope string `protobuf:"bytes,7,opt,name=Scope,proto3" json:"Scope,omitempty"`
 	// UseIDToken indicates if the id token should be used for authentication
 	UseIDToken bool `protobuf:"varint,8,opt,name=UseIDToken,proto3" json:"UseIDToken,omitempty"`
+	// AuthorizationEndpoint is the endpoint of an IDP manager where clients can obtain authorization code.
+	AuthorizationEndpoint string `protobuf:"bytes,9,opt,name=AuthorizationEndpoint,proto3" json:"AuthorizationEndpoint,omitempty"`
+	// RedirectURLs handles authorization code from IDP manager
+	RedirectURLs []string `protobuf:"bytes,10,rep,name=RedirectURLs,proto3" json:"RedirectURLs,omitempty"`
 }
 
 func (x *ProviderConfig) Reset() {
 	*x = ProviderConfig{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[18]
+		mi := &file_management_proto_msgTypes[20]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1518,7 +1611,7 @@ func (x *ProviderConfig) String() string {
 func (*ProviderConfig) ProtoMessage() {}
 
 func (x *ProviderConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[18]
+	mi := &file_management_proto_msgTypes[20]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1531,7 +1624,7 @@ func (x *ProviderConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ProviderConfig.ProtoReflect.Descriptor instead.
 func (*ProviderConfig) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{18}
+	return file_management_proto_rawDescGZIP(), []int{20}
 }
 
 func (x *ProviderConfig) GetClientID() string {
@@ -1590,6 +1683,20 @@ func (x *ProviderConfig) GetUseIDToken() bool {
 	return false
 }
 
+func (x *ProviderConfig) GetAuthorizationEndpoint() string {
+	if x != nil {
+		return x.AuthorizationEndpoint
+	}
+	return ""
+}
+
+func (x *ProviderConfig) GetRedirectURLs() []string {
+	if x != nil {
+		return x.RedirectURLs
+	}
+	return nil
+}
+
 // Route represents a route.Route object
 type Route struct {
 	state         protoimpl.MessageState
@@ -1608,7 +1715,7 @@ type Route struct {
 func (x *Route) Reset() {
 	*x = Route{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[19]
+		mi := &file_management_proto_msgTypes[21]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1621,7 +1728,7 @@ func (x *Route) String() string {
 func (*Route) ProtoMessage() {}
 
 func (x *Route) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[19]
+	mi := &file_management_proto_msgTypes[21]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1634,7 +1741,7 @@ func (x *Route) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Route.ProtoReflect.Descriptor instead.
 func (*Route) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{19}
+	return file_management_proto_rawDescGZIP(), []int{21}
 }
 
 func (x *Route) GetID() string {
@@ -1700,7 +1807,7 @@ type DNSConfig struct {
 func (x *DNSConfig) Reset() {
 	*x = DNSConfig{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[20]
+		mi := &file_management_proto_msgTypes[22]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1713,7 +1820,7 @@ func (x *DNSConfig) String() string {
 func (*DNSConfig) ProtoMessage() {}
 
 func (x *DNSConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[20]
+	mi := &file_management_proto_msgTypes[22]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1726,7 +1833,7 @@ func (x *DNSConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DNSConfig.ProtoReflect.Descriptor instead.
 func (*DNSConfig) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{20}
+	return file_management_proto_rawDescGZIP(), []int{22}
 }
 
 func (x *DNSConfig) GetServiceEnable() bool {
@@ -1763,7 +1870,7 @@ type CustomZone struct {
 func (x *CustomZone) Reset() {
 	*x = CustomZone{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[21]
+		mi := &file_management_proto_msgTypes[23]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1776,7 +1883,7 @@ func (x *CustomZone) String() string {
 func (*CustomZone) ProtoMessage() {}
 
 func (x *CustomZone) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[21]
+	mi := &file_management_proto_msgTypes[23]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1789,7 +1896,7 @@ func (x *CustomZone) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CustomZone.ProtoReflect.Descriptor instead.
 func (*CustomZone) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{21}
+	return file_management_proto_rawDescGZIP(), []int{23}
 }
 
 func (x *CustomZone) GetDomain() string {
@@ -1822,7 +1929,7 @@ type SimpleRecord struct {
 func (x *SimpleRecord) Reset() {
 	*x = SimpleRecord{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[22]
+		mi := &file_management_proto_msgTypes[24]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1835,7 +1942,7 @@ func (x *SimpleRecord) String() string {
 func (*SimpleRecord) ProtoMessage() {}
 
 func (x *SimpleRecord) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[22]
+	mi := &file_management_proto_msgTypes[24]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1848,7 +1955,7 @@ func (x *SimpleRecord) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SimpleRecord.ProtoReflect.Descriptor instead.
 func (*SimpleRecord) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{22}
+	return file_management_proto_rawDescGZIP(), []int{24}
 }
 
 func (x *SimpleRecord) GetName() string {
@@ -1900,7 +2007,7 @@ type NameServerGroup struct {
 func (x *NameServerGroup) Reset() {
 	*x = NameServerGroup{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[23]
+		mi := &file_management_proto_msgTypes[25]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1913,7 +2020,7 @@ func (x *NameServerGroup) String() string {
 func (*NameServerGroup) ProtoMessage() {}
 
 func (x *NameServerGroup) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[23]
+	mi := &file_management_proto_msgTypes[25]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1926,7 +2033,7 @@ func (x *NameServerGroup) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use NameServerGroup.ProtoReflect.Descriptor instead.
 func (*NameServerGroup) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{23}
+	return file_management_proto_rawDescGZIP(), []int{25}
 }
 
 func (x *NameServerGroup) GetNameServers() []*NameServer {
@@ -1964,7 +2071,7 @@ type NameServer struct {
 func (x *NameServer) Reset() {
 	*x = NameServer{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[24]
+		mi := &file_management_proto_msgTypes[26]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1977,7 +2084,7 @@ func (x *NameServer) String() string {
 func (*NameServer) ProtoMessage() {}
 
 func (x *NameServer) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[24]
+	mi := &file_management_proto_msgTypes[26]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1990,7 +2097,7 @@ func (x *NameServer) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use NameServer.ProtoReflect.Descriptor instead.
 func (*NameServer) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{24}
+	return file_management_proto_rawDescGZIP(), []int{26}
 }
 
 func (x *NameServer) GetIP() string {
@@ -2030,7 +2137,7 @@ type FirewallRule struct {
 func (x *FirewallRule) Reset() {
 	*x = FirewallRule{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_management_proto_msgTypes[25]
+		mi := &file_management_proto_msgTypes[27]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2043,7 +2150,7 @@ func (x *FirewallRule) String() string {
 func (*FirewallRule) ProtoMessage() {}
 
 func (x *FirewallRule) ProtoReflect() protoreflect.Message {
-	mi := &file_management_proto_msgTypes[25]
+	mi := &file_management_proto_msgTypes[27]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2056,7 +2163,7 @@ func (x *FirewallRule) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FirewallRule.ProtoReflect.Descriptor instead.
 func (*FirewallRule) Descriptor() ([]byte, []int) {
-	return file_management_proto_rawDescGZIP(), []int{25}
+	return file_management_proto_rawDescGZIP(), []int{27}
 }
 
 func (x *FirewallRule) GetPeerIP() string {
@@ -2270,121 +2377,140 @@ var file_management_proto_rawDesc = []byte{
 	0x50, 0x72, 0x6f, 0x76, 0x69, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0e,
 	0x50, 0x72, 0x6f, 0x76, 0x69, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0x16,
 	0x0a, 0x08, 0x70, 0x72, 0x6f, 0x76, 0x69, 0x64, 0x65, 0x72, 0x12, 0x0a, 0x0a, 0x06, 0x48, 0x4f,
-	0x53, 0x54, 0x45, 0x44, 0x10, 0x00, 0x22, 0x90, 0x02, 0x0a, 0x0e, 0x50, 0x72, 0x6f, 0x76, 0x69,
-	0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x1a, 0x0a, 0x08, 0x43, 0x6c, 0x69,
-	0x65, 0x6e, 0x74, 0x49, 0x44, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x43, 0x6c, 0x69,
-	0x65, 0x6e, 0x74, 0x49, 0x44, 0x12, 0x22, 0x0a, 0x0c, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x53,
-	0x65, 0x63, 0x72, 0x65, 0x74, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x43, 0x6c, 0x69,
-	0x65, 0x6e, 0x74, 0x53, 0x65, 0x63, 0x72, 0x65, 0x74, 0x12, 0x16, 0x0a, 0x06, 0x44, 0x6f, 0x6d,
-	0x61, 0x69, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x44, 0x6f, 0x6d, 0x61, 0x69,
-	0x6e, 0x12, 0x1a, 0x0a, 0x08, 0x41, 0x75, 0x64, 0x69, 0x65, 0x6e, 0x63, 0x65, 0x18, 0x04, 0x20,
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+	0x65, 0x74, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a,
+	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x46, 0x6c, 0x6f, 0x77, 0x12, 0x1c, 0x2e, 0x6d, 0x61, 0x6e, 0x61,
+	0x67, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x45, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x65, 0x64,
+	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x1a, 0x1c, 0x2e, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65,
+	0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x45, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x65, 0x64, 0x4d, 0x65,
+	0x73, 0x73, 0x61, 0x67, 0x65, 0x22, 0x00, 0x12, 0x58, 0x0a, 0x18, 0x47, 0x65, 0x74, 0x50, 0x4b,
+	0x43, 0x45, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x46,
+	0x6c, 0x6f, 0x77, 0x12, 0x1c, 0x2e, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x6d, 0x65, 0x6e, 0x74,
+	0x2e, 0x45, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67,
+	0x65, 0x1a, 0x1c, 0x2e, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x45,
+	0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x22,
+	0x00, 0x42, 0x08, 0x5a, 0x06, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x33,
 }
 
 var (
@@ -2400,7 +2526,7 @@ func file_management_proto_rawDescGZIP() []byte {
 }
 
 var file_management_proto_enumTypes = make([]protoimpl.EnumInfo, 5)
-var file_management_proto_msgTypes = make([]protoimpl.MessageInfo, 26)
+var file_management_proto_msgTypes = make([]protoimpl.MessageInfo, 28)
 var file_management_proto_goTypes = []interface{}{
 	(HostConfig_Protocol)(0),               // 0: management.HostConfig.Protocol
 	(DeviceAuthorizationFlowProvider)(0),   // 1: management.DeviceAuthorizationFlow.provider
@@ -2425,15 +2551,17 @@ var file_management_proto_goTypes = []interface{}{
 	(*SSHConfig)(nil),                      // 20: management.SSHConfig
 	(*DeviceAuthorizationFlowRequest)(nil), // 21: management.DeviceAuthorizationFlowRequest
 	(*DeviceAuthorizationFlow)(nil),        // 22: management.DeviceAuthorizationFlow
-	(*ProviderConfig)(nil),                 // 23: management.ProviderConfig
-	(*Route)(nil),                          // 24: management.Route
-	(*DNSConfig)(nil),                      // 25: management.DNSConfig
-	(*CustomZone)(nil),                     // 26: management.CustomZone
-	(*SimpleRecord)(nil),                   // 27: management.SimpleRecord
-	(*NameServerGroup)(nil),                // 28: management.NameServerGroup
-	(*NameServer)(nil),                     // 29: management.NameServer
-	(*FirewallRule)(nil),                   // 30: management.FirewallRule
-	(*timestamppb.Timestamp)(nil),          // 31: google.protobuf.Timestamp
+	(*PKCEAuthorizationFlowRequest)(nil),   // 23: management.PKCEAuthorizationFlowRequest
+	(*PKCEAuthorizationFlow)(nil),          // 24: management.PKCEAuthorizationFlow
+	(*ProviderConfig)(nil),                 // 25: management.ProviderConfig
+	(*Route)(nil),                          // 26: management.Route
+	(*DNSConfig)(nil),                      // 27: management.DNSConfig
+	(*CustomZone)(nil),                     // 28: management.CustomZone
+	(*SimpleRecord)(nil),                   // 29: management.SimpleRecord
+	(*NameServerGroup)(nil),                // 30: management.NameServerGroup
+	(*NameServer)(nil),                     // 31: management.NameServer
+	(*FirewallRule)(nil),                   // 32: management.FirewallRule
+	(*timestamppb.Timestamp)(nil),          // 33: google.protobuf.Timestamp
 }
 var file_management_proto_depIdxs = []int32{
 	14, // 0: management.SyncResponse.wiretrusteeConfig:type_name -> management.WiretrusteeConfig
@@ -2444,7 +2572,7 @@ var file_management_proto_depIdxs = []int32{
 	9,  // 5: management.LoginRequest.peerKeys:type_name -> management.PeerKeys
 	14, // 6: management.LoginResponse.wiretrusteeConfig:type_name -> management.WiretrusteeConfig
 	17, // 7: management.LoginResponse.peerConfig:type_name -> management.PeerConfig
-	31, // 8: management.ServerKeyResponse.expiresAt:type_name -> google.protobuf.Timestamp
+	33, // 8: management.ServerKeyResponse.expiresAt:type_name -> google.protobuf.Timestamp
 	15, // 9: management.WiretrusteeConfig.stuns:type_name -> management.HostConfig
 	16, // 10: management.WiretrusteeConfig.turns:type_name -> management.ProtectedHostConfig
 	15, // 11: management.WiretrusteeConfig.signal:type_name -> management.HostConfig
@@ -2453,35 +2581,38 @@ var file_management_proto_depIdxs = []int32{
 	20, // 14: management.PeerConfig.sshConfig:type_name -> management.SSHConfig
 	17, // 15: management.NetworkMap.peerConfig:type_name -> management.PeerConfig
 	19, // 16: management.NetworkMap.remotePeers:type_name -> management.RemotePeerConfig
-	24, // 17: management.NetworkMap.Routes:type_name -> management.Route
-	25, // 18: management.NetworkMap.DNSConfig:type_name -> management.DNSConfig
+	26, // 17: management.NetworkMap.Routes:type_name -> management.Route
+	27, // 18: management.NetworkMap.DNSConfig:type_name -> management.DNSConfig
 	19, // 19: management.NetworkMap.offlinePeers:type_name -> management.RemotePeerConfig
-	30, // 20: management.NetworkMap.FirewallRules:type_name -> management.FirewallRule
+	32, // 20: management.NetworkMap.FirewallRules:type_name -> management.FirewallRule
 	20, // 21: management.RemotePeerConfig.sshConfig:type_name -> management.SSHConfig
 	1,  // 22: management.DeviceAuthorizationFlow.Provider:type_name -> management.DeviceAuthorizationFlow.provider
-	23, // 23: management.DeviceAuthorizationFlow.ProviderConfig:type_name -> management.ProviderConfig
-	28, // 24: management.DNSConfig.NameServerGroups:type_name -> management.NameServerGroup
-	26, // 25: management.DNSConfig.CustomZones:type_name -> management.CustomZone
-	27, // 26: management.CustomZone.Records:type_name -> management.SimpleRecord
-	29, // 27: management.NameServerGroup.NameServers:type_name -> management.NameServer
-	2,  // 28: management.FirewallRule.Direction:type_name -> management.FirewallRule.direction
-	3,  // 29: management.FirewallRule.Action:type_name -> management.FirewallRule.action
-	4,  // 30: management.FirewallRule.Protocol:type_name -> management.FirewallRule.protocol
-	5,  // 31: management.ManagementService.Login:input_type -> management.EncryptedMessage
-	5,  // 32: management.ManagementService.Sync:input_type -> management.EncryptedMessage
-	13, // 33: management.ManagementService.GetServerKey:input_type -> management.Empty
-	13, // 34: management.ManagementService.isHealthy:input_type -> management.Empty
-	5,  // 35: management.ManagementService.GetDeviceAuthorizationFlow:input_type -> management.EncryptedMessage
-	5,  // 36: management.ManagementService.Login:output_type -> management.EncryptedMessage
-	5,  // 37: management.ManagementService.Sync:output_type -> management.EncryptedMessage
-	12, // 38: management.ManagementService.GetServerKey:output_type -> management.ServerKeyResponse
-	13, // 39: management.ManagementService.isHealthy:output_type -> management.Empty
-	5,  // 40: management.ManagementService.GetDeviceAuthorizationFlow:output_type -> management.EncryptedMessage
-	36, // [36:41] is the sub-list for method output_type
-	31, // [31:36] is the sub-list for method input_type
-	31, // [31:31] is the sub-list for extension type_name
-	31, // [31:31] is the sub-list for extension extendee
-	0,  // [0:31] is the sub-list for field type_name
+	25, // 23: management.DeviceAuthorizationFlow.ProviderConfig:type_name -> management.ProviderConfig
+	25, // 24: management.PKCEAuthorizationFlow.ProviderConfig:type_name -> management.ProviderConfig
+	30, // 25: management.DNSConfig.NameServerGroups:type_name -> management.NameServerGroup
+	28, // 26: management.DNSConfig.CustomZones:type_name -> management.CustomZone
+	29, // 27: management.CustomZone.Records:type_name -> management.SimpleRecord
+	31, // 28: management.NameServerGroup.NameServers:type_name -> management.NameServer
+	2,  // 29: management.FirewallRule.Direction:type_name -> management.FirewallRule.direction
+	3,  // 30: management.FirewallRule.Action:type_name -> management.FirewallRule.action
+	4,  // 31: management.FirewallRule.Protocol:type_name -> management.FirewallRule.protocol
+	5,  // 32: management.ManagementService.Login:input_type -> management.EncryptedMessage
+	5,  // 33: management.ManagementService.Sync:input_type -> management.EncryptedMessage
+	13, // 34: management.ManagementService.GetServerKey:input_type -> management.Empty
+	13, // 35: management.ManagementService.isHealthy:input_type -> management.Empty
+	5,  // 36: management.ManagementService.GetDeviceAuthorizationFlow:input_type -> management.EncryptedMessage
+	5,  // 37: management.ManagementService.GetPKCEAuthorizationFlow:input_type -> management.EncryptedMessage
+	5,  // 38: management.ManagementService.Login:output_type -> management.EncryptedMessage
+	5,  // 39: management.ManagementService.Sync:output_type -> management.EncryptedMessage
+	12, // 40: management.ManagementService.GetServerKey:output_type -> management.ServerKeyResponse
+	13, // 41: management.ManagementService.isHealthy:output_type -> management.Empty
+	5,  // 42: management.ManagementService.GetDeviceAuthorizationFlow:output_type -> management.EncryptedMessage
+	5,  // 43: management.ManagementService.GetPKCEAuthorizationFlow:output_type -> management.EncryptedMessage
+	38, // [38:44] is the sub-list for method output_type
+	32, // [32:38] is the sub-list for method input_type
+	32, // [32:32] is the sub-list for extension type_name
+	32, // [32:32] is the sub-list for extension extendee
+	0,  // [0:32] is the sub-list for field type_name
 }
 
 func init() { file_management_proto_init() }
@@ -2707,7 +2838,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ProviderConfig); i {
+			switch v := v.(*PKCEAuthorizationFlowRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2719,7 +2850,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Route); i {
+			switch v := v.(*PKCEAuthorizationFlow); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2731,7 +2862,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DNSConfig); i {
+			switch v := v.(*ProviderConfig); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2743,7 +2874,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CustomZone); i {
+			switch v := v.(*Route); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2755,7 +2886,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SimpleRecord); i {
+			switch v := v.(*DNSConfig); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2767,7 +2898,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServerGroup); i {
+			switch v := v.(*CustomZone); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2779,7 +2910,7 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer); i {
+			switch v := v.(*SimpleRecord); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2791,6 +2922,30 @@ func file_management_proto_init() {
 			}
 		}
 		file_management_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*NameServerGroup); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_management_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*NameServer); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_management_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*FirewallRule); i {
 			case 0:
 				return &v.state
@@ -2809,7 +2964,7 @@ func file_management_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_management_proto_rawDesc,
 			NumEnums:      5,
-			NumMessages:   26,
+			NumMessages:   28,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

management/proto/management.proto

@@ -31,6 +31,13 @@ service ManagementService {
   // EncryptedMessage of the request has a body of DeviceAuthorizationFlowRequest.
   // EncryptedMessage of the response has a body of DeviceAuthorizationFlow.
   rpc GetDeviceAuthorizationFlow(EncryptedMessage) returns (EncryptedMessage) {}
+
+  // Exposes a PKCE authorization code flow information
+  // This is used for initiating a Oauth 2 authorization grant flow
+  // with Proof Key for Code Exchange (PKCE) which will be used by our clients to Login.
+  // EncryptedMessage of the request has a body of PKCEAuthorizationFlowRequest.
+  // EncryptedMessage of the response has a body of PKCEAuthorizationFlow.
+  rpc GetPKCEAuthorizationFlow(EncryptedMessage) returns (EncryptedMessage) {}
 }
 
 message EncryptedMessage {
@@ -237,7 +244,17 @@ message DeviceAuthorizationFlow {
   }
 }
 
-// ProviderConfig has all attributes needed to initiate a device authorization flow
+// PKCEAuthorizationFlowRequest empty struct for future expansion
+message PKCEAuthorizationFlowRequest {}
+
+// PKCEAuthorizationFlow represents Authorization Code Flow information
+// that can be used by the client to login initiate a Oauth 2.0 authorization code grant flow
+// with Proof Key for Code Exchange (PKCE). See https://datatracker.ietf.org/doc/html/rfc7636
+message PKCEAuthorizationFlow {
+  ProviderConfig ProviderConfig = 1;
+}
+
+// ProviderConfig has all attributes needed to initiate a device/pkce authorization flow
 message ProviderConfig {
   // An IDP application client id
   string ClientID = 1;
@@ -256,6 +273,10 @@ message ProviderConfig {
   string Scope = 7;
   // UseIDToken indicates if the id token should be used for authentication
   bool UseIDToken = 8;
+  // AuthorizationEndpoint is the endpoint of an IDP manager where clients can obtain authorization code.
+  string AuthorizationEndpoint = 9;
+  // RedirectURLs handles authorization code from IDP manager
+  repeated string RedirectURLs = 10;
 }
 
 // Route represents a route.Route object

management/proto/management_grpc.pb.go

@@ -37,6 +37,12 @@ type ManagementServiceClient interface {
 	// EncryptedMessage of the request has a body of DeviceAuthorizationFlowRequest.
 	// EncryptedMessage of the response has a body of DeviceAuthorizationFlow.
 	GetDeviceAuthorizationFlow(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error)
+	// Exposes a PKCE authorization code flow information
+	// This is used for initiating a Oauth 2 authorization grant flow
+	// with Proof Key for Code Exchange (PKCE) which will be used by our clients to Login.
+	// EncryptedMessage of the request has a body of PKCEAuthorizationFlowRequest.
+	// EncryptedMessage of the response has a body of PKCEAuthorizationFlow.
+	GetPKCEAuthorizationFlow(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error)
 }
 
 type managementServiceClient struct {
@@ -115,6 +121,15 @@ func (c *managementServiceClient) GetDeviceAuthorizationFlow(ctx context.Context
 	return out, nil
 }
 
+func (c *managementServiceClient) GetPKCEAuthorizationFlow(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error) {
+	out := new(EncryptedMessage)
+	err := c.cc.Invoke(ctx, "/management.ManagementService/GetPKCEAuthorizationFlow", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // ManagementServiceServer is the server API for ManagementService service.
 // All implementations must embed UnimplementedManagementServiceServer
 // for forward compatibility
@@ -138,6 +153,12 @@ type ManagementServiceServer interface {
 	// EncryptedMessage of the request has a body of DeviceAuthorizationFlowRequest.
 	// EncryptedMessage of the response has a body of DeviceAuthorizationFlow.
 	GetDeviceAuthorizationFlow(context.Context, *EncryptedMessage) (*EncryptedMessage, error)
+	// Exposes a PKCE authorization code flow information
+	// This is used for initiating a Oauth 2 authorization grant flow
+	// with Proof Key for Code Exchange (PKCE) which will be used by our clients to Login.
+	// EncryptedMessage of the request has a body of PKCEAuthorizationFlowRequest.
+	// EncryptedMessage of the response has a body of PKCEAuthorizationFlow.
+	GetPKCEAuthorizationFlow(context.Context, *EncryptedMessage) (*EncryptedMessage, error)
 	mustEmbedUnimplementedManagementServiceServer()
 }
 
@@ -160,6 +181,9 @@ func (UnimplementedManagementServiceServer) IsHealthy(context.Context, *Empty) (
 func (UnimplementedManagementServiceServer) GetDeviceAuthorizationFlow(context.Context, *EncryptedMessage) (*EncryptedMessage, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetDeviceAuthorizationFlow not implemented")
 }
+func (UnimplementedManagementServiceServer) GetPKCEAuthorizationFlow(context.Context, *EncryptedMessage) (*EncryptedMessage, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetPKCEAuthorizationFlow not implemented")
+}
 func (UnimplementedManagementServiceServer) mustEmbedUnimplementedManagementServiceServer() {}
 
 // UnsafeManagementServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -266,6 +290,24 @@ func _ManagementService_GetDeviceAuthorizationFlow_Handler(srv interface{}, ctx
 	return interceptor(ctx, in, info, handler)
 }
 
+func _ManagementService_GetPKCEAuthorizationFlow_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(EncryptedMessage)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ManagementServiceServer).GetPKCEAuthorizationFlow(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/management.ManagementService/GetPKCEAuthorizationFlow",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ManagementServiceServer).GetPKCEAuthorizationFlow(ctx, req.(*EncryptedMessage))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // ManagementService_ServiceDesc is the grpc.ServiceDesc for ManagementService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -289,6 +331,10 @@ var ManagementService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "GetDeviceAuthorizationFlow",
 			Handler:    _ManagementService_GetDeviceAuthorizationFlow_Handler,
 		},
+		{
+			MethodName: "GetPKCEAuthorizationFlow",
+			Handler:    _ManagementService_GetPKCEAuthorizationFlow_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{

management/server/config.go

@@ -42,6 +42,8 @@ type Config struct {
 	IdpManagerConfig *idp.Config
 
 	DeviceAuthorizationFlow *DeviceAuthorizationFlow
+
+	PKCEAuthorizationFlow *PKCEAuthorizationFlow
 }
 
 // GetAuthAudiences returns the audience from the http config and device authorization flow config
@@ -101,7 +103,14 @@ type DeviceAuthorizationFlow struct {
 	ProviderConfig ProviderConfig
 }
 
-// ProviderConfig has all attributes needed to initiate a device authorization flow
+// PKCEAuthorizationFlow represents Authorization Code Flow information
+// that can be used by the client to login initiate a Oauth 2.0 authorization code grant flow
+// with Proof Key for Code Exchange (PKCE). See https://datatracker.ietf.org/doc/html/rfc7636
+type PKCEAuthorizationFlow struct {
+	ProviderConfig ProviderConfig
+}
+
+// ProviderConfig has all attributes needed to initiate a device/pkce authorization flow
 type ProviderConfig struct {
 	// ClientID An IDP application client id
 	ClientID string
@@ -116,10 +125,14 @@ type ProviderConfig struct {
 	TokenEndpoint string
 	// DeviceAuthEndpoint is the endpoint of an IDP manager where clients can obtain device authorization code
 	DeviceAuthEndpoint string
+	// AuthorizationEndpoint is the endpoint of an IDP manager where clients can obtain authorization code
+	AuthorizationEndpoint string
 	// Scopes provides the scopes to be included in the token request
 	Scope string
 	// UseIDToken indicates if the id token should be used for authentication
 	UseIDToken bool
+	// RedirectURL handles authorization code from IDP manager
+	RedirectURLs []string
 }
 
 // validateURL validates input http url

management/server/grpcserver.go

@@ -543,3 +543,49 @@ func (s *GRPCServer) GetDeviceAuthorizationFlow(ctx context.Context, req *proto.
 		Body:     encryptedResp,
 	}, nil
 }
+
+// GetPKCEAuthorizationFlow returns a pkce authorization flow information
+// This is used for initiating an Oauth 2 pkce authorization grant flow
+// which will be used by our clients to Login
+func (s *GRPCServer) GetPKCEAuthorizationFlow(_ context.Context, req *proto.EncryptedMessage) (*proto.EncryptedMessage, error) {
+	peerKey, err := wgtypes.ParseKey(req.GetWgPubKey())
+	if err != nil {
+		errMSG := fmt.Sprintf("error while parsing peer's Wireguard public key %s on GetPKCEAuthorizationFlow request.", req.WgPubKey)
+		log.Warn(errMSG)
+		return nil, status.Error(codes.InvalidArgument, errMSG)
+	}
+
+	err = encryption.DecryptMessage(peerKey, s.wgKey, req.Body, &proto.PKCEAuthorizationFlowRequest{})
+	if err != nil {
+		errMSG := fmt.Sprintf("error while decrypting peer's message with Wireguard public key %s.", req.WgPubKey)
+		log.Warn(errMSG)
+		return nil, status.Error(codes.InvalidArgument, errMSG)
+	}
+
+	if s.config.PKCEAuthorizationFlow == nil {
+		return nil, status.Error(codes.NotFound, "no pkce authorization flow information available")
+	}
+
+	flowInfoResp := &proto.PKCEAuthorizationFlow{
+		ProviderConfig: &proto.ProviderConfig{
+			Audience:              s.config.PKCEAuthorizationFlow.ProviderConfig.Audience,
+			ClientID:              s.config.PKCEAuthorizationFlow.ProviderConfig.ClientID,
+			ClientSecret:          s.config.PKCEAuthorizationFlow.ProviderConfig.ClientSecret,
+			TokenEndpoint:         s.config.PKCEAuthorizationFlow.ProviderConfig.TokenEndpoint,
+			AuthorizationEndpoint: s.config.PKCEAuthorizationFlow.ProviderConfig.AuthorizationEndpoint,
+			Scope:                 s.config.PKCEAuthorizationFlow.ProviderConfig.Scope,
+			RedirectURLs:          s.config.PKCEAuthorizationFlow.ProviderConfig.RedirectURLs,
+			UseIDToken:            s.config.PKCEAuthorizationFlow.ProviderConfig.UseIDToken,
+		},
+	}
+
+	encryptedResp, err := encryption.EncryptMessage(peerKey, s.wgKey, flowInfoResp)
+	if err != nil {
+		return nil, status.Error(codes.Internal, "failed to encrypt no pkce authorization flow information")
+	}
+
+	return &proto.EncryptedMessage{
+		WgPubKey: s.wgKey.PublicKey().String(),
+		Body:     encryptedResp,
+	}, nil
+}

management/server/mock_server/management_server_mock.go

@@ -16,6 +16,7 @@ type ManagementServiceServerMock struct {
 	GetServerKeyFunc               func(context.Context, *proto.Empty) (*proto.ServerKeyResponse, error)
 	IsHealthyFunc                  func(context.Context, *proto.Empty) (*proto.Empty, error)
 	GetDeviceAuthorizationFlowFunc func(ctx context.Context, req *proto.EncryptedMessage) (*proto.EncryptedMessage, error)
+	GetPKCEAuthorizationFlowFunc   func(ctx context.Context, req *proto.EncryptedMessage) (*proto.EncryptedMessage, error)
 }
 
 func (m ManagementServiceServerMock) Login(ctx context.Context, req *proto.EncryptedMessage) (*proto.EncryptedMessage, error) {
@@ -52,3 +53,10 @@ func (m ManagementServiceServerMock) GetDeviceAuthorizationFlow(ctx context.Cont
 	}
 	return nil, status.Errorf(codes.Unimplemented, "method GetDeviceAuthorizationFlow not implemented")
 }
+
+func (m ManagementServiceServerMock) GetPKCEAuthorizationFlow(ctx context.Context, req *proto.EncryptedMessage) (*proto.EncryptedMessage, error) {
+	if m.GetPKCEAuthorizationFlowFunc != nil {
+		return m.GetPKCEAuthorizationFlowFunc(ctx, req)
+	}
+	return nil, status.Errorf(codes.Unimplemented, "method GetPKCEAuthorizationFlow not implemented")
+}