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venv/lib/python3.12/site-packages/asyncssh/gss.py

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+# Copyright (c) 2017-2023 by Ron Frederick <ronf@timeheart.net> and others.
+#
+# This program and the accompanying materials are made available under
+# the terms of the Eclipse Public License v2.0 which accompanies this
+# distribution and is available at:
+#
+#     http://www.eclipse.org/legal/epl-2.0/
+#
+# This program may also be made available under the following secondary
+# licenses when the conditions for such availability set forth in the
+# Eclipse Public License v2.0 are satisfied:
+#
+#    GNU General Public License, Version 2.0, or any later versions of
+#    that license
+#
+# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
+#
+# Contributors:
+#     Ron Frederick - initial implementation, API, and documentation
+
+"""GSSAPI wrapper"""
+
+import sys
+
+from typing import Optional
+
+try:
+    # pylint: disable=unused-import
+
+    if sys.platform == 'win32': # pragma: no cover
+        from .gss_win32 import GSSBase, GSSClient, GSSServer, GSSError
+    else:
+        from .gss_unix import GSSBase, GSSClient, GSSServer, GSSError
+
+    gss_available = True
+except ImportError: # pragma: no cover
+    gss_available = False
+
+    class GSSError(ValueError): # type: ignore
+        """Stub class for reporting that GSS is not available"""
+
+        def __init__(self, maj_code: int, min_code: int,
+                 token: Optional[bytes] = None):
+            super().__init__('GSS not available')
+
+            self.maj_code = maj_code
+            self.min_code = min_code
+            self.token = token
+
+    class GSSBase: # type: ignore
+        """Base class for reporting that GSS is not available"""
+
+    class GSSClient(GSSBase): # type: ignore
+        """Stub client class for reporting that GSS is not available"""
+
+        def __init__(self, _host: str, _delegate_creds: bool):
+            raise GSSError(0, 0)
+
+    class GSSServer(GSSBase): # type: ignore
+        """Stub client class for reporting that GSS is not available"""
+
+        def __init__(self, _host: str):
+            raise GSSError(0, 0)