IAM: Use SessionDatabase in OpenID4VP

auth/api/iam/api.go

@@ -28,13 +28,13 @@ import (
 	"github.com/nuts-foundation/nuts-node/auth"
 	"github.com/nuts-foundation/nuts-node/auth/log"
 	"github.com/nuts-foundation/nuts-node/core"
+	"github.com/nuts-foundation/nuts-node/storage"
 	"github.com/nuts-foundation/nuts-node/vcr"
 	"github.com/nuts-foundation/nuts-node/vdr"
 	"github.com/nuts-foundation/nuts-node/vdr/resolver"
 	"html/template"
 	"net/http"
 	"strings"
-	"sync"
 )
 
 var _ core.Routable = &Wrapper{}
@@ -49,25 +49,25 @@ var assets embed.FS
 
 // Wrapper handles OAuth2 flows.
 type Wrapper struct {
-	vcr       vcr.VCR
-	vdr       vdr.VDR
-	auth      auth.AuthenticationServices
-	sessions  *SessionManager
-	templates *template.Template
+	vcr           vcr.VCR
+	vdr           vdr.VDR
+	auth          auth.AuthenticationServices
+	templates     *template.Template
+	storageEngine storage.Engine
 }
 
-func New(authInstance auth.AuthenticationServices, vcrInstance vcr.VCR, vdrInstance vdr.VDR) *Wrapper {
+func New(authInstance auth.AuthenticationServices, vcrInstance vcr.VCR, vdrInstance vdr.VDR, storageEngine storage.Engine) *Wrapper {
 	templates := template.New("oauth2 templates")
 	_, err := templates.ParseFS(assets, "assets/*.html")
 	if err != nil {
 		panic(err)
 	}
 	return &Wrapper{
-		sessions:  &SessionManager{sessions: new(sync.Map)},
-		auth:      authInstance,
-		vcr:       vcrInstance,
-		vdr:       vdrInstance,
-		templates: templates,
+		storageEngine: storageEngine,
+		auth:          authInstance,
+		vcr:           vcrInstance,
+		vdr:           vdrInstance,
+		templates:     templates,
 	}
 }
 

auth/api/iam/openid4vp.go

@@ -24,6 +24,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"github.com/google/uuid"
 	"github.com/labstack/echo/v4"
 	ssi "github.com/nuts-foundation/go-did"
 	"github.com/nuts-foundation/go-did/did"
@@ -33,8 +34,11 @@ import (
 	"net/http"
 	"net/url"
 	"strings"
+	"time"
 )
 
+const sessionExpiry = 5 * time.Minute
+
 // createPresentationRequest creates a new Authorization Request as specified by OpenID4VP: https://openid.net/specs/openid-4-verifiable-presentations-1_0.html.
 // It is sent by a verifier to a wallet, to request one or more verifiable credentials as verifiable presentation from the wallet.
 func (r *Wrapper) sendPresentationRequest(ctx context.Context, response http.ResponseWriter, scope string,
@@ -145,7 +149,12 @@ func (r *Wrapper) handlePresentationRequest(params map[string]string, session *S
 	}
 	session.ServerState["openid4vp_credentials"] = credentialIDs
 
-	templateParams.SessionID = r.sessions.Create(*session)
+	sessionID := uuid.NewString()
+	err = r.storageEngine.GetSessionDatabase().GetStore(sessionExpiry, session.OwnDID.String(), "session").Put(sessionID, *session)
+	if err != nil {
+		return nil, err
+	}
+	templateParams.SessionID = sessionID
 
 	// TODO: Support multiple languages
 	buf := new(bytes.Buffer)
@@ -162,12 +171,16 @@ func (r *Wrapper) handlePresentationRequest(params map[string]string, session *S
 // handleAuthConsent handles the authorization consent form submission.
 func (r *Wrapper) handlePresentationRequestAccept(c echo.Context) error {
 	// TODO: Needs authentication?
-	var session *Session
-	if sessionID := c.FormValue("sessionID"); sessionID != "" {
-		session = r.sessions.Get(sessionID)
+	sessionID := c.FormValue("sessionID")
+	if sessionID == "" {
+		return errors.New("missing sessionID parameter")
 	}
-	if session == nil {
-		return errors.New("invalid session")
+
+	var session Session
+	sessionStore := r.storageEngine.GetSessionDatabase().GetStore(sessionExpiry, session.OwnDID.String(), "session")
+	err := sessionStore.Get(sessionID, &session)
+	if err != nil {
+		return fmt.Errorf("invalid session: %w", err)
 	}
 
 	// TODO: Change to loading from wallet

auth/api/iam/session.go

@@ -19,34 +19,10 @@
 package iam
 
 import (
-	"github.com/google/uuid"
 	"github.com/nuts-foundation/go-did/did"
 	"net/url"
-	"sync"
 )
 
-type SessionManager struct {
-	sessions *sync.Map
-}
-
-func (s *SessionManager) Create(session Session) string {
-	// TODO: Session expiration
-	// TODO: Session storage
-	// TODO: Session pinning and other safety measures (see OAuth2 Threat Model)
-	id := uuid.NewString()
-	s.sessions.Store(id, session)
-	return id
-}
-
-func (s *SessionManager) Get(id string) *Session {
-	session, ok := s.sessions.Load(id)
-	if !ok {
-		return nil
-	}
-	result := session.(Session)
-	return &result
-}
-
 type Session struct {
 	ClientID     string
 	Scope        string

cmd/root.go

@@ -214,7 +214,7 @@ func CreateSystem(shutdownCallback context.CancelFunc) *core.System {
 	system.RegisterRoutes(statusEngine.(core.Routable))
 	system.RegisterRoutes(metricsEngine.(core.Routable))
 	system.RegisterRoutes(&authAPIv1.Wrapper{Auth: authInstance, CredentialResolver: credentialInstance})
-	system.RegisterRoutes(authIAMAPI.New(authInstance, credentialInstance, vdrInstance))
+	system.RegisterRoutes(authIAMAPI.New(authInstance, credentialInstance, vdrInstance, storageInstance))
 	system.RegisterRoutes(&authMeansAPI.Wrapper{Auth: authInstance})
 	system.RegisterRoutes(&didmanAPI.Wrapper{Didman: didmanInstance})