feat: request registration process by prompt (#1798)

* feat: request registration process by prompt

* fix merge

* add prompt create to docs

docs/docs/apis/openidoauth/endpoints.md

@@ -39,7 +39,7 @@ Optional parameters
 | login_hint    | A valid logon name of a user. Will be used for username inputs or preselecting a user on `select_account`                                                                                                                                                                                                                                                                                                         |
 | max_age       | Seconds since the last active successful authentication of the user                                                                                                                                                                                                                                                                                                                                               |
 | nonce         | Random string value to associate the client session with the ID Token and for replay attacks mitigation.                                                                                                                                                                                                                                                                                                          |
-| prompt        | If the Auth Server prompts the user for (re)authentication. <br />no prompt: the user will have to choose a session if more than one session exists<br />`none`: user must be authenticated without interaction, an error is returned otherwise <br />`login`: user must reauthenticate / provide a user name <br />`select_account`: user is prompted to select one of the existing sessions or create a new one |
+| prompt        | If the Auth Server prompts the user for (re)authentication. <br />no prompt: the user will have to choose a session if more than one session exists<br />`none`: user must be authenticated without interaction, an error is returned otherwise <br />`login`: user must reauthenticate / provide a user name <br />`select_account`: user is prompted to select one of the existing sessions or create a new one <br />`create`: the registration form will be displayed to the user directly |
 | state         | Opaque value used to maintain state between the request and the callback. Used for Cross-Site Request Forgery (CSRF) mitigation as well.                                                                                                                                                                                                                                                                          |
 
 Successful Code Response

docs/docs/apis/proto/management.md

@@ -1794,7 +1794,7 @@ The Following Variables can be used:
 > **rpc** ResetCustomPasswordResetMessageTextToDefault([ResetCustomPasswordResetMessageTextToDefaultRequest](#resetcustompasswordresetmessagetexttodefaultrequest))
 [ResetCustomPasswordResetMessageTextToDefaultResponse](#resetcustompasswordresetmessagetexttodefaultresponse)
 
-Removes the custom init message text of the organisation
+Removes the custom password reset message text of the organisation
 The default text of the IAM will trigger after
 
 
@@ -1838,7 +1838,7 @@ The Following Variables can be used:
 > **rpc** ResetCustomVerifyEmailMessageTextToDefault([ResetCustomVerifyEmailMessageTextToDefaultRequest](#resetcustomverifyemailmessagetexttodefaultrequest))
 [ResetCustomVerifyEmailMessageTextToDefaultResponse](#resetcustomverifyemailmessagetexttodefaultresponse)
 
-Removes the custom init message text of the organisation
+Removes the custom verify email message text of the organisation
 The default text of the IAM will trigger after
 
 
@@ -1882,7 +1882,7 @@ The Following Variables can be used:
 > **rpc** ResetCustomVerifyPhoneMessageTextToDefault([ResetCustomVerifyPhoneMessageTextToDefaultRequest](#resetcustomverifyphonemessagetexttodefaultrequest))
 [ResetCustomVerifyPhoneMessageTextToDefaultResponse](#resetcustomverifyphonemessagetexttodefaultresponse)
 
-Removes the custom init message text of the organisation
+Removes the custom verify phone text of the organisation
 The default text of the IAM will trigger after
 
 

internal/api/oidc/auth_request_converter.go

@@ -171,6 +171,8 @@ func PromptToBusiness(prompt oidc.Prompt) domain.Prompt {
 		return domain.PromptConsent
 	case oidc.PromptSelectAccount:
 		return domain.PromptSelectAccount
+	case "create": //this prompt is not final yet, so not implemented in oidc lib
+		return domain.PromptCreate
 	default:
 		return domain.PromptUnspecified
 	}

internal/auth/repository/eventsourcing/eventstore/auth_request.go

@@ -532,6 +532,9 @@ func (repo *AuthRequestRepo) nextSteps(ctx context.Context, request *domain.Auth
 			return steps, nil
 		}
 		steps = append(steps, new(domain.LoginStep))
+		if request.Prompt == domain.PromptCreate {
+			return append(steps, &domain.RegistrationStep{}), nil
+		}
 		if request.Prompt == domain.PromptSelectAccount || request.Prompt == domain.PromptUnspecified {
 			users, err := repo.usersForUserSelection(request)
 			if err != nil {

internal/domain/auth_request.go

@@ -72,6 +72,7 @@ const (
 	PromptLogin
 	PromptConsent
 	PromptSelectAccount
+	PromptCreate
 )
 
 type LevelOfAssurance int

internal/domain/next_step.go

@@ -24,6 +24,7 @@ const (
 	NextStepExternalLogin
 	NextStepGrantRequired
 	NextStepPasswordless
+	NextStepRegistration
 )
 
 type LoginStep struct{}
@@ -32,6 +33,12 @@ func (s *LoginStep) Type() NextStepType {
 	return NextStepLogin
 }
 
+type RegistrationStep struct{}
+
+func (s *RegistrationStep) Type() NextStepType {
+	return NextStepRegistration
+}
+
 type SelectUserStep struct {
 	Users []UserSelection
 }

internal/ui/login/handler/register_handler.go

@@ -3,10 +3,10 @@ package handler
 import (
 	"net/http"
 
-	"github.com/caos/zitadel/internal/domain"
-
 	"golang.org/x/text/language"
 
+	http_mw "github.com/caos/zitadel/internal/api/http/middleware"
+	"github.com/caos/zitadel/internal/domain"
 	caos_errs "github.com/caos/zitadel/internal/errors"
 )
 
@@ -82,7 +82,12 @@ func (l *Login) handleRegisterCheck(w http.ResponseWriter, r *http.Request) {
 		http.Redirect(w, r, l.zitadelURL, http.StatusFound)
 		return
 	}
-	authRequest.LoginName = user.PreferredLoginName
+	userAgentID, _ := http_mw.UserAgentIDFromCtx(r.Context())
+	err = l.authRepo.SelectUser(r.Context(), authRequest.ID, user.AggregateID, userAgentID)
+	if err != nil {
+		l.renderRegister(w, r, authRequest, data, err)
+		return
+	}
 	l.renderNextStep(w, r, authRequest)
 }
 

internal/ui/login/handler/renderer.go

@@ -8,18 +8,17 @@ import (
 	"path"
 	"strings"
 
-	"github.com/caos/zitadel/internal/domain"
-	"github.com/caos/zitadel/internal/static"
-
 	"github.com/caos/logging"
 	"github.com/gorilla/csrf"
 	"golang.org/x/text/language"
 
 	http_mw "github.com/caos/zitadel/internal/api/http/middleware"
 	"github.com/caos/zitadel/internal/auth_request/model"
+	"github.com/caos/zitadel/internal/domain"
 	caos_errs "github.com/caos/zitadel/internal/errors"
 	"github.com/caos/zitadel/internal/i18n"
 	"github.com/caos/zitadel/internal/renderer"
+	"github.com/caos/zitadel/internal/static"
 )
 
 const (
@@ -238,6 +237,8 @@ func (l *Login) chooseNextStep(w http.ResponseWriter, r *http.Request, authReq *
 			return
 		}
 		l.renderLogin(w, r, authReq, err)
+	case *domain.RegistrationStep:
+		l.renderRegisterOption(w, r, authReq, nil)
 	case *domain.SelectUserStep:
 		l.renderUserSelection(w, r, authReq, step)
 	case *domain.InitPasswordStep:

internal/ui/login/static/templates/register_option.html

@@ -22,9 +22,8 @@
             formnovalidate>{{t "RegisterOption.RegisterUsernamePassword"}}</button>
         {{end}}
 
+        {{if hasExternalLogin}}
             <p>{{t "Registration.ExternalLogin"}}</p>
-
-        {{if .LoginPolicy.AllowExternalIDP}}
             {{ $reqid := .AuthReqID}}
             {{range $provider := .IDPProviders}}
                 <a href="{{ externalIDPRegisterURL $reqid $provider.IDPConfigID}}"