feat: admin APIs for token authenticated registration (#3101)

### Pull Request Checklist

<!-- Please read
https://matrix-org.github.io/dendrite/development/contributing before
submitting your pull request -->

* [x] I have added Go unit tests or [Complement integration
tests](https://github.com/matrix-org/complement) for this PR _or_ I have
justified why this PR doesn't need tests
* [x] Pull request includes a [sign off below using a legally
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_or_ I have already signed off privately

Signed-off-by: `Santhoshivan Amudhan santhoshivan23@gmail.com`

1 files changed, 32 insertions, 0 deletions

diff --git a/userapi/internal/user_api.go b/userapi/internal/user_api.go
index 32f3d84b..4305c13a 100644
--- a/userapi/internal/user_api.go
+++ b/userapi/internal/user_api.go
@@ -33,6 +33,7 @@ import (
 	"github.com/sirupsen/logrus"
 	"golang.org/x/crypto/bcrypt"
 
+	clientapi "github.com/matrix-org/dendrite/clientapi/api"
 	"github.com/matrix-org/dendrite/clientapi/userutil"
 	"github.com/matrix-org/dendrite/internal/eventutil"
 	"github.com/matrix-org/dendrite/internal/pushgateway"
@@ -63,6 +64,37 @@ type UserInternalAPI struct {
 	Updater     *DeviceListUpdater
 }
 
+func (a *UserInternalAPI) PerformAdminCreateRegistrationToken(ctx context.Context, registrationToken *clientapi.RegistrationToken) (bool, error) {
+	exists, err := a.DB.RegistrationTokenExists(ctx, *registrationToken.Token)
+	if err != nil {
+		return false, err
+	}
+	if exists {
+		return false, fmt.Errorf("token: %s already exists", *registrationToken.Token)
+	}
+	_, err = a.DB.InsertRegistrationToken(ctx, registrationToken)
+	if err != nil {
+		return false, fmt.Errorf("Error creating token: %s"+err.Error(), *registrationToken.Token)
+	}
+	return true, nil
+}
+
+func (a *UserInternalAPI) PerformAdminListRegistrationTokens(ctx context.Context, returnAll bool, valid bool) ([]clientapi.RegistrationToken, error) {
+	return a.DB.ListRegistrationTokens(ctx, returnAll, valid)
+}
+
+func (a *UserInternalAPI) PerformAdminGetRegistrationToken(ctx context.Context, tokenString string) (*clientapi.RegistrationToken, error) {
+	return a.DB.GetRegistrationToken(ctx, tokenString)
+}
+
+func (a *UserInternalAPI) PerformAdminDeleteRegistrationToken(ctx context.Context, tokenString string) error {
+	return a.DB.DeleteRegistrationToken(ctx, tokenString)
+}
+
+func (a *UserInternalAPI) PerformAdminUpdateRegistrationToken(ctx context.Context, tokenString string, newAttributes map[string]interface{}) (*clientapi.RegistrationToken, error) {
+	return a.DB.UpdateRegistrationToken(ctx, tokenString, newAttributes)
+}
+
 func (a *UserInternalAPI) InputAccountData(ctx context.Context, req *api.InputAccountDataRequest, res *api.InputAccountDataResponse) error {
 	local, domain, err := gomatrixserverlib.SplitID('@', req.UserID)
 	if err != nil {