support sso only in QGIS 3.40 and never

Author: JanCaha

Mergin/configuration_dialog.py

@@ -7,7 +7,7 @@
 from qgis.PyQt import uic
 from qgis.PyQt.QtCore import Qt, QSettings, QTimer
 from qgis.PyQt.QtGui import QPixmap
-from qgis.core import QgsApplication
+from qgis.core import QgsApplication, Qgis
 from urllib.error import URLError
 
 
@@ -25,6 +25,7 @@
     sso_ask_for_email,
     mergin_server_deprecated_version,
     url_reachable,
+    qgis_support_sso,
 )
 from .utils import (
     MERGIN_URL,
@@ -90,6 +91,11 @@ def __init__(self):
         self.check_credentials()
         self.check_sso_availability()
 
+        if not qgis_support_sso():
+            self.ui.button_sign_sso.setVisible(False)
+            self.ui.stacked_widget_login.setCurrentIndex(0)
+            self.ui.sso_email.setVisible(False)
+
     def accept(self):
         if not self.test_connection():
             return
@@ -181,6 +187,9 @@ def test_connection(self):
     def allow_sso_login(self) -> None:
         self.ui.button_sign_sso.setVisible(False)
 
+        if not qgis_support_sso():
+            return
+
         allowed, msg = sso_login_allowed(self.server_url())
         if msg:
             QMessageBox.critical(self, "SSO allowed check", msg)

Mergin/utils_auth.py

@@ -13,6 +13,7 @@
     QgsBlockingNetworkRequest,
     QgsNetworkAccessManager,
     QgsExpressionContextUtils,
+    Qgis,
 )
 from qgis.PyQt.QtCore import QSettings, QUrl
 from qgis.PyQt.QtNetwork import QNetworkRequest
@@ -523,3 +524,12 @@ def url_reachable(url: str) -> bool:
     except (requests.RequestException, urllib3.exceptions.LocationParseError):
         return False
     return True
+
+
+def qgis_support_sso() -> bool:
+    """
+    Check if the current QGIS version supports SSO login.
+    Returns True if SSO is supported, False otherwise.
+    """
+    # QGIS 3.40+ supports SSO
+    return Qgis.versionInt() >= 34000