// HandleTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-6
func (c *RefreshTokenGrantHandler) HandleTokenEndpointRequest(ctx context.Context, req *http.Request, requester fosite.AccessRequester, responder fosite.AccessResponder, session interface{}) error {
if requester.GetGrantType() != "refresh_token" {
return nil
}
access, err := c.Enigma.GenerateChallenge(requester.GetClient().GetHashedSecret())
if err != nil {
return errors.New(fosite.ErrServerError)
} else if err := c.Store.CreateAccessTokenSession(access.Signature, requester, &core.TokenSession{Extra: session}); err != nil {
return errors.New(fosite.ErrServerError)
}
refresh, err := c.Enigma.GenerateChallenge(requester.GetClient().GetHashedSecret())
if err != nil {
return errors.New(fosite.ErrServerError)
} else if err := c.Store.CreateRefreshTokenSession(refresh.Signature, requester, &core.TokenSession{Extra: session}); err != nil {
return errors.New(fosite.ErrServerError)
}
challenge := new(enigma.Challenge)
challenge.FromString(req.Form.Get("refresh_token"))
if err := c.Store.DeleteRefreshTokenSession(challenge.Signature); err != nil {
return errors.New(fosite.ErrServerError)
}
responder.SetAccessToken(access.String())
responder.SetTokenType("bearer")
responder.SetExtra("expires_in", strconv.Itoa(int(c.AccessTokenLifespan/time.Second)))
responder.SetExtra("scope", strings.Join(requester.GetGrantedScopes(), " "))
responder.SetExtra("refresh_token", refresh.String())
return nil
}
// HandleTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-4.3.2
func (c *ResourceOwnerPasswordCredentialsGrantHandler) HandleTokenEndpointRequest(ctx context.Context, req *http.Request, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "password".
if !request.GetGrantTypes().Exact("password") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
if !request.GetClient().GetGrantTypes().Has("password") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use grant type password")
}
username := req.PostForm.Get("username")
password := req.PostForm.Get("password")
if username == "" || password == "" {
return errors.Wrap(fosite.ErrInvalidRequest, "Username or password missing")
} else if err := c.ResourceOwnerPasswordCredentialsGrantStorage.Authenticate(ctx, username, password); errors.Cause(err) == fosite.ErrNotFound {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
} else if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
client := request.GetClient()
for _, scope := range request.GetRequestedScopes() {
if !c.ScopeStrategy(client.GetScopes(), scope) {
return errors.Wrap(fosite.ErrInvalidScope, fmt.Sprintf("The client is not allowed to request scope %s", scope))
}
}
// Credentials must not be passed around, potentially leaking to the database!
delete(request.GetRequestForm(), "password")
return nil
}
// IntrospectTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-4.4.2
func (c *ClientCredentialsGrantHandler) HandleTokenEndpointRequest(_ context.Context, r *http.Request, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "client_credentials".
if !request.GetGrantTypes().Exact("client_credentials") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
client := request.GetClient()
for _, scope := range request.GetRequestedScopes() {
if !c.ScopeStrategy(client.GetScopes(), scope) {
return errors.Wrap(fosite.ErrInvalidScope, fmt.Sprintf("The client is not allowed to request scope %s", scope))
}
}
// The client MUST authenticate with the authorization server as described in Section 3.2.1.
// This requirement is already fulfilled because fosite requries all token requests to be authenticated as described
// in https://tools.ietf.org/html/rfc6749#section-3.2.1
if client.IsPublic() {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is public and thus not allowed to use grant type client_credentials")
}
// if the client is not public, he has already been authenticated by the access request handler.
request.GetSession().SetExpiresAt(fosite.AccessToken, time.Now().Add(c.AccessTokenLifespan))
return nil
}
// ValidateTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-6
func (c *RefreshTokenGrantHandler) ValidateTokenEndpointRequest(_ context.Context, req *http.Request, request fosite.AccessRequester, session interface{}) error {
// grant_type REQUIRED.
// Value MUST be set to "client_credentials".
if request.GetGrantType() != "refresh_token" {
return nil
}
// The authorization server MUST ... validate the refresh token.
challenge := new(enigma.Challenge)
challenge.FromString(req.Form.Get("refresh_token"))
if err := c.Enigma.ValidateChallenge(request.GetClient().GetHashedSecret(), challenge); err != nil {
return errors.New(fosite.ErrInvalidRequest)
}
ar, err := c.Store.GetRefreshTokenSession(challenge.Signature, &core.TokenSession{Extra: session})
if err == pkg.ErrNotFound {
return errors.New(fosite.ErrInvalidRequest)
} else if err != nil {
return errors.New(fosite.ErrServerError)
}
// The authorization server MUST ... and ensure that the refresh token was issued to the authenticated client
if ar.GetClient().GetID() != request.GetClient().GetID() {
return errors.New(fosite.ErrInvalidRequest)
}
request.SetGrantTypeHandled("refresh_token")
return nil
}
func (c *OpenIDConnectExplicitHandler) PopulateTokenEndpointResponse(ctx context.Context, req *http.Request, requester fosite.AccessRequester, responder fosite.AccessResponder) error {
if !requester.GetGrantTypes().Exact("authorization_code") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
authorize, err := c.OpenIDConnectRequestStorage.GetOpenIDConnectSession(ctx, requester.GetRequestForm().Get("code"), requester)
if errors.Cause(err) == ErrNoSessionFound {
return errors.Wrap(fosite.ErrUnknownRequest, err.Error())
} else if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
if !authorize.GetGrantedScopes().Has("openid") {
return errors.Wrap(fosite.ErrMisconfiguration, "The an openid connect session was found but the openid scope is missing in it")
}
if !requester.GetClient().GetGrantTypes().Has("authorization_code") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use the authorization_code grant type")
}
if !requester.GetClient().GetResponseTypes().Has("id_token") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use response type id_token")
}
return c.IssueExplicitIDToken(ctx, req, authorize, responder)
}
// ValidateTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-6
func (c *RefreshTokenGrantHandler) ValidateTokenEndpointRequest(ctx context.Context, req *http.Request, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "client_credentials".
if request.GetGrantType() != "refresh_token" {
return nil
}
// The authorization server MUST ... validate the refresh token.
signature, err := c.RefreshTokenStrategy.ValidateRefreshToken(req.Form.Get("refresh_token"), ctx, req, request)
if err != nil {
return errors.New(fosite.ErrInvalidRequest)
}
accessRequest, err := c.Store.GetRefreshTokenSession(signature, nil)
if err == pkg.ErrNotFound {
return errors.New(fosite.ErrInvalidRequest)
} else if err != nil {
return errors.New(fosite.ErrServerError)
}
// The authorization server MUST ... and ensure that the refresh token was issued to the authenticated client
if accessRequest.GetClient().GetID() != request.GetClient().GetID() {
return errors.New(fosite.ErrInvalidRequest)
}
request.SetGrantTypeHandled("refresh_token")
return nil
}
// PopulateTokenEndpointResponse implements https://tools.ietf.org/html/rfc6749#section-4.4.3
func (c *ClientCredentialsGrantHandler) PopulateTokenEndpointResponse(ctx context.Context, r *http.Request, request fosite.AccessRequester, response fosite.AccessResponder) error {
if !request.GetGrantTypes().Exact("client_credentials") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
if !request.GetClient().GetGrantTypes().Has("client_credentials") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use grant type client_credentials")
}
return c.IssueAccessToken(ctx, r, request, response)
}
// HandleTokenEndpointRequest implements
// * https://tools.ietf.org/html/rfc6749#section-4.1.3 (everything)
func (c *AuthorizeExplicitGrantHandler) HandleTokenEndpointRequest(ctx context.Context, r *http.Request, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "authorization_code".
if !request.GetGrantTypes().Exact("authorization_code") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
if !request.GetClient().GetGrantTypes().Has("authorization_code") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use grant type authorization_code")
}
code := r.PostForm.Get("code")
signature := c.AuthorizeCodeStrategy.AuthorizeCodeSignature(code)
authorizeRequest, err := c.AuthorizeCodeGrantStorage.GetAuthorizeCodeSession(ctx, signature, request.GetSession())
if errors.Cause(err) == fosite.ErrNotFound {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
} else if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
// The authorization server MUST verify that the authorization code is valid
if err := c.AuthorizeCodeStrategy.ValidateAuthorizeCode(ctx, request, code); err != nil {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
}
// Override scopes
request.SetRequestedScopes(authorizeRequest.GetRequestedScopes())
// The authorization server MUST ensure that the authorization code was issued to the authenticated
// confidential client, or if the client is public, ensure that the
// code was issued to "client_id" in the request,
if authorizeRequest.GetClient().GetID() != request.GetClient().GetID() {
return errors.Wrap(fosite.ErrInvalidRequest, "Client ID mismatch")
}
// ensure that the "redirect_uri" parameter is present if the
// "redirect_uri" parameter was included in the initial authorization
// request as described in Section 4.1.1, and if included ensure that
// their values are identical.
forcedRedirectURI := authorizeRequest.GetRequestForm().Get("redirect_uri")
if forcedRedirectURI != "" && forcedRedirectURI != r.PostForm.Get("redirect_uri") {
return errors.Wrap(fosite.ErrInvalidRequest, "Redirect URI mismatch")
}
// Checking of POST client_id skipped, because:
// If the client type is confidential or the client was issued client
// credentials (or assigned other authentication requirements), the
// client MUST authenticate with the authorization server as described
// in Section 3.2.1.
request.SetSession(authorizeRequest.GetSession())
request.GetSession().SetExpiresAt(fosite.AccessToken, time.Now().Add(c.AccessTokenLifespan))
return nil
}
// HandleTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-6
func (c *RefreshTokenGrantHandler) HandleTokenEndpointRequest(ctx context.Context, req *http.Request, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "refresh_token".
if !request.GetGrantTypes().Exact("refresh_token") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
if !request.GetClient().GetGrantTypes().Has("refresh_token") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use grant type refresh_token")
}
refresh := req.PostForm.Get("refresh_token")
signature := c.RefreshTokenStrategy.RefreshTokenSignature(refresh)
originalRequest, err := c.RefreshTokenGrantStorage.GetRefreshTokenSession(ctx, signature, request.GetSession())
if errors.Cause(err) == fosite.ErrNotFound {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
} else if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
if !originalRequest.GetGrantedScopes().Has("offline") {
return errors.Wrap(fosite.ErrScopeNotGranted, "The client is not allowed to use grant type refresh_token")
}
// The authorization server MUST ... validate the refresh token.
if err := c.RefreshTokenStrategy.ValidateRefreshToken(ctx, request, refresh); err != nil {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
}
// The authorization server MUST ... and ensure that the refresh token was issued to the authenticated client
if originalRequest.GetClient().GetID() != request.GetClient().GetID() {
return errors.Wrap(fosite.ErrInvalidRequest, "Client ID mismatch")
}
request.SetSession(originalRequest.GetSession())
request.SetRequestedScopes(originalRequest.GetRequestedScopes())
for _, scope := range originalRequest.GetGrantedScopes() {
request.GrantScope(scope)
}
request.GetSession().SetExpiresAt(fosite.AccessToken, time.Now().Add(c.AccessTokenLifespan))
return nil
}
func (w *LocalWarden) actionAllowed(ctx context.Context, a *ladon.Request, scopes []string, oauthRequest fosite.AccessRequester, session *oauth2.Session) (*Context, error) {
session = oauthRequest.GetSession().(*oauth2.Session)
if a.Subject != "" && a.Subject != session.Subject {
return nil, errors.New("Subject mismatch " + a.Subject + " - " + session.Subject)
}
if !matchScopes(oauthRequest.GetGrantedScopes(), scopes, session, oauthRequest.GetClient()) {
return nil, errors.New(herodot.ErrForbidden)
}
a.Subject = session.Subject
if err := w.Warden.IsAllowed(a); err != nil {
return nil, err
}
logrus.WithFields(logrus.Fields{
"scopes": scopes,
"subject": a.Subject,
"audience": oauthRequest.GetClient().GetID(),
"request": a,
}).Infof("Access granted")
return &Context{
Subject: session.Subject,
GrantedScopes: oauthRequest.GetGrantedScopes(),
Issuer: w.Issuer,
Audience: oauthRequest.GetClient().GetID(),
IssuedAt: oauthRequest.GetRequestedAt(),
}, nil
}
// HandleTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-4.4.3
func (c *ClientCredentialsGrantHandler) HandleTokenEndpointRequest(ctx context.Context, req *http.Request, requester fosite.AccessRequester, responder fosite.AccessResponder, session interface{}) error {
if requester.GetGrantType() != "client_credentials" {
return nil
}
access, err := c.Enigma.GenerateChallenge(requester.GetClient().GetHashedSecret())
if err != nil {
return errors.New(fosite.ErrServerError)
} else if err := c.Store.CreateAccessTokenSession(access.Signature, requester, &core.TokenSession{Extra: session}); err != nil {
return errors.New(fosite.ErrServerError)
}
responder.SetAccessToken(access.String())
responder.SetTokenType("bearer")
responder.SetExtra("expires_in", strconv.Itoa(int(c.AccessTokenLifespan/time.Second)))
responder.SetExtra("scope", strings.Join(requester.GetGrantedScopes(), " "))
// "A refresh token SHOULD NOT be included."
// -> we won't issue one
return nil
}
// HandleTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-4.3.3
func (c *ResourceOwnerPasswordCredentialsGrantHandler) HandleTokenEndpointRequest(ctx context.Context, req *http.Request, requester fosite.AccessRequester, responder fosite.AccessResponder, session interface{}) error {
if requester.GetGrantType() != "password" {
return nil
}
access, err := c.Enigma.GenerateChallenge(requester.GetClient().GetHashedSecret())
if err != nil {
return errors.New(fosite.ErrServerError)
} else if err := c.Store.CreateAccessTokenSession(access.Signature, requester, &core.TokenSession{Extra: session}); err != nil {
return errors.New(fosite.ErrServerError)
}
responder.SetAccessToken(access.String())
responder.SetTokenType("bearer")
responder.SetExtra("expires_in", strconv.Itoa(int(c.AccessTokenLifespan/time.Second)))
responder.SetExtra("scope", strings.Join(requester.GetGrantedScopes(), " "))
// As of https://tools.ietf.org/html/rfc6819#section-5.2.2.1 and
// https://tools.ietf.org/html/rfc6819#section-4.4.3.3 we decided not to include refresh tokens
// as part of the resource owner grant
return nil
}
