RAHHH

backend/lib/python3.12/site-packages/twisted/plugins/cred_sshkeys.py

@@ -0,0 +1,48 @@
+# -*- test-case-name: twisted.test.test_strcred -*-
+#
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+"""
+Cred plugin for ssh key login.
+"""
+
+
+from zope.interface import implementer
+
+from twisted import plugin
+from twisted.cred.strcred import ICheckerFactory
+
+sshKeyCheckerFactoryHelp = """
+This allows SSH public key authentication, based on public keys listed in
+authorized_keys and authorized_keys2 files in user .ssh/ directories.
+"""
+
+
+try:
+    from twisted.conch.checkers import SSHPublicKeyChecker, UNIXAuthorizedKeysFiles
+
+    @implementer(ICheckerFactory, plugin.IPlugin)
+    class SSHKeyCheckerFactory:
+        """
+        Generates checkers that will authenticate a SSH public key
+        """
+
+        authType = "sshkey"
+        authHelp = sshKeyCheckerFactoryHelp
+        argStringFormat = "No argstring required."
+        credentialInterfaces = SSHPublicKeyChecker.credentialInterfaces
+
+        def generateChecker(self, argstring=""):
+            """
+            This checker factory ignores the argument string. Everything
+            needed to authenticate users is pulled out of the public keys
+            listed in user .ssh/ directories.
+            """
+            return SSHPublicKeyChecker(UNIXAuthorizedKeysFiles())
+
+    theSSHKeyCheckerFactory = SSHKeyCheckerFactory()
+
+except ImportError:
+    # if checkers can't be imported, then there should be no SSH cred plugin
+    pass