63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
package oidc
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import (
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"context"
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"github.com/ory/fosite/handler/oauth2"
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"github.com/ory/fosite/handler/openid"
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"github.com/pkg/errors"
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"github.com/ory/fosite"
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"github.com/ory/fosite/compose"
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)
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func TokenExchangeFactory(config *compose.Config, storage interface{}, strategy interface{}) interface{} {
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return &TokenExchangeHandler{
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strategy.(openid.OpenIDConnectTokenStrategy),
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strategy.(oauth2.AccessTokenStrategy),
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storage.(oauth2.AccessTokenStorage),
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}
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}
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type TokenExchangeHandler struct {
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idTokenStrategy openid.OpenIDConnectTokenStrategy
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accessTokenStrategy oauth2.AccessTokenStrategy
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accessTokenStorage oauth2.AccessTokenStorage
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}
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func (t *TokenExchangeHandler) HandleTokenEndpointRequest(ctx context.Context, requester fosite.AccessRequester) error {
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if !(requester.GetGrantTypes().ExactOne("urn:ietf:params:oauth:grant-type:token-exchange")) {
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return errors.WithStack(fosite.ErrUnknownRequest)
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}
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return nil
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}
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func (t *TokenExchangeHandler) PopulateTokenEndpointResponse(ctx context.Context, requester fosite.AccessRequester, responder fosite.AccessResponder) error {
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params := requester.GetRequestForm()
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accessToken := params.Get("subject_token")
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if err := t.accessTokenStrategy.ValidateAccessToken(ctx, requester, accessToken); err != nil {
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return errors.WithStack(err)
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}
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signature := t.accessTokenStrategy.AccessTokenSignature(accessToken)
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accessTokenSession, err := t.accessTokenStorage.GetAccessTokenSession(ctx, signature, requester.GetSession())
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if err != nil {
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return errors.WithStack(err)
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}
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if !accessTokenSession.GetGrantedScopes().Has("pinniped.sts.unrestricted") {
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return errors.WithStack(fosite.ErrScopeNotGranted)
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}
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// TODO check the other requester fields
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scopedDownRequester := fosite.NewAccessRequest(requester.GetSession())
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scopedDownRequester.GrantedAudience = []string{params.Get("audience")}
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newToken, err := t.idTokenStrategy.GenerateIDToken(ctx, scopedDownRequester)
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if err != nil {
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return errors.WithStack(err)
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}
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responder.SetAccessToken(newToken)
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responder.SetTokenType("N_A")
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responder.SetExtra("issued_token_type", "urn:ietf:params:oauth:token-type:jwt")
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return nil
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}
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