add PKCE support to device code flow (#2575)

Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com>

storage/ent/client/devicetoken.go

@@ -17,6 +17,8 @@ func (d *Database) CreateDeviceToken(token storage.DeviceToken) error {
 		SetExpiry(token.Expiry.UTC()).
 		SetLastRequest(token.LastRequestTime.UTC()).
 		SetStatus(token.Status).
+		SetCodeChallenge(token.PKCE.CodeChallenge).
+		SetCodeChallengeMethod(token.PKCE.CodeChallengeMethod).
 		Save(context.TODO())
 	if err != nil {
 		return convertDBError("create device token: %w", err)
@@ -63,6 +65,8 @@ func (d *Database) UpdateDeviceToken(deviceCode string, updater func(old storage
 		SetExpiry(newToken.Expiry.UTC()).
 		SetLastRequest(newToken.LastRequestTime.UTC()).
 		SetStatus(newToken.Status).
+		SetCodeChallenge(newToken.PKCE.CodeChallenge).
+		SetCodeChallengeMethod(newToken.PKCE.CodeChallengeMethod).
 		Save(context.TODO())
 	if err != nil {
 		return rollback(tx, "update device token uploading: %w", err)

storage/ent/client/types.go

@@ -164,5 +164,9 @@ func toStorageDeviceToken(t *db.DeviceToken) storage.DeviceToken {
 		Expiry:              t.Expiry,
 		LastRequestTime:     t.LastRequest,
 		PollIntervalSeconds: t.PollInterval,
+		PKCE: storage.PKCE{
+			CodeChallenge:       t.CodeChallenge,
+			CodeChallengeMethod: t.CodeChallengeMethod,
+		},
 	}
 }