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
# Which Problems Are Solved Some OAuth2 and OIDC providers require the use of PKCE for all their clients. While ZITADEL already recommended the same for its clients, it did not yet support the option on the IdP configuration. # How the Problems Are Solved - A new boolean `use_pkce` is added to the add/update generic OAuth/OIDC endpoints. - A new checkbox is added to the generic OAuth and OIDC provider templates. - The `rp.WithPKCE` option is added to the provider if the use of PKCE has been set. - The `rp.WithCodeChallenge` and `rp.WithCodeVerifier` options are added to the OIDC/Auth BeginAuth and CodeExchange function. - Store verifier or any other persistent argument in the intent or auth request. - Create corresponding session object before creating the intent, to be able to store the information. - (refactored session structs to use a constructor for unified creation and better overview of actual usage) Here's a screenshot showing the URI including the PKCE params:  # Additional Changes None. # Additional Context - Closes #6449 - This PR replaces the existing PR (#8228) of @doncicuto. The base he did was cherry picked. Thank you very much for that! --------- Co-authored-by: Miguel Cabrerizo <doncicuto@gmail.com> Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>
69 lines
2.0 KiB
Go
69 lines
2.0 KiB
Go
package apple
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import (
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"context"
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"encoding/json"
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openid "github.com/zitadel/oidc/v3/pkg/oidc"
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"github.com/zitadel/zitadel/internal/idp"
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"github.com/zitadel/zitadel/internal/idp/providers/oidc"
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)
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// Session extends the [oidc.Session] with the formValues returned from the callback.
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// This enables to parse the user (name and email), which Apple only returns as form params on registration
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type Session struct {
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*oidc.Session
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UserFormValue string
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}
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func NewSession(provider *Provider, code, userFormValue string) *Session {
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return &Session{Session: oidc.NewSession(provider.Provider, code, nil), UserFormValue: userFormValue}
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}
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type userFormValue struct {
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Name userNamesFormValue `json:"name,omitempty" schema:"name"`
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}
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type userNamesFormValue struct {
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FirstName string `json:"firstName,omitempty" schema:"firstName"`
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LastName string `json:"lastName,omitempty" schema:"lastName"`
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}
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// FetchUser implements the [idp.Session] interface.
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// It will execute an OIDC code exchange if needed to retrieve the tokens,
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// extract the information from the id_token and if available also from the `user` form value.
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// The information will be mapped into an [idp.User].
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func (s *Session) FetchUser(ctx context.Context) (user idp.User, err error) {
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if s.Tokens == nil {
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if err = s.Authorize(ctx); err != nil {
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return nil, err
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}
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}
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info := s.Tokens.IDTokenClaims.GetUserInfo()
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userName := userFormValue{}
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if s.UserFormValue != "" {
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if err = json.Unmarshal([]byte(s.UserFormValue), &userName); err != nil {
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return nil, err
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}
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}
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return NewUser(info, userName.Name), nil
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}
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func NewUser(info *openid.UserInfo, names userNamesFormValue) *User {
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user := oidc.NewUser(info)
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user.GivenName = names.FirstName
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user.FamilyName = names.LastName
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return &User{User: user}
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}
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// User extends the [oidc.User] by returning the email as preferred_username, since Apple does not return the latter.
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type User struct {
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*oidc.User
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}
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func (u *User) GetPreferredUsername() string {
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return u.Email
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}
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