// 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
}
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-4.1.3 (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
}
func (c *CoreValidator) introspectAuthorizeCode(ctx context.Context, token string, accessRequest fosite.AccessRequester) error {
sig := c.CoreStrategy.AuthorizeCodeSignature(token)
if or, err := c.CoreStorage.GetAuthorizeCodeSession(ctx, sig, accessRequest.GetSession()); err != nil {
return errors.Wrap(err, fosite.ErrRequestUnauthorized.Error())
} else if err := c.CoreStrategy.ValidateAuthorizeCode(ctx, or, token); err != nil {
return err
} else {
accessRequest.Merge(or)
}
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 (c *CoreValidator) introspectAccessToken(ctx context.Context, token string, accessRequest fosite.AccessRequester, scopes []string) error {
sig := c.CoreStrategy.AccessTokenSignature(token)
or, err := c.CoreStorage.GetAccessTokenSession(ctx, sig, accessRequest.GetSession())
if err != nil {
return errors.Wrap(fosite.ErrRequestUnauthorized, err.Error())
} else if err := c.CoreStrategy.ValidateAccessToken(ctx, or, token); err != nil {
return err
}
for _, scope := range scopes {
if scope == "" {
continue
}
if !c.ScopeStrategy(or.GetGrantedScopes(), scope) {
return errors.Wrap(fosite.ErrInvalidScope, "")
}
}
accessRequest.Merge(or)
return nil
}
func (c *AuthorizeExplicitGrantHandler) PopulateTokenEndpointResponse(ctx context.Context, req *http.Request, requester fosite.AccessRequester, responder fosite.AccessResponder) error {
// grant_type REQUIRED.
// Value MUST be set to "authorization_code".
if !requester.GetGrantTypes().Exact("authorization_code") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
code := req.PostForm.Get("code")
signature := c.AuthorizeCodeStrategy.AuthorizeCodeSignature(code)
authorizeRequest, err := c.AuthorizeCodeGrantStorage.GetAuthorizeCodeSession(ctx, signature, requester.GetSession())
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
} else if err := c.AuthorizeCodeStrategy.ValidateAuthorizeCode(ctx, requester, code); err != nil {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
}
access, accessSignature, err := c.AccessTokenStrategy.GenerateAccessToken(ctx, requester)
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
for _, scope := range authorizeRequest.GetGrantedScopes() {
requester.GrantScope(scope)
}
var refresh, refreshSignature string
if authorizeRequest.GetGrantedScopes().Has("offline") {
refresh, refreshSignature, err = c.RefreshTokenStrategy.GenerateRefreshToken(ctx, requester)
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
}
if err := c.AuthorizeCodeGrantStorage.PersistAuthorizeCodeGrantSession(ctx, signature, accessSignature, refreshSignature, requester); err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
responder.SetAccessToken(access)
responder.SetTokenType("bearer")
responder.SetExpiresIn(getExpiresIn(requester, fosite.AccessToken, c.AccessTokenLifespan, time.Now()))
responder.SetScopes(requester.GetGrantedScopes())
if refresh != "" {
responder.SetExtra("refresh_token", refresh)
}
return nil
}