python: new example script

* Though Keybase really should not be encouraged due to
  disengenuosness and FUD emanating from that souce, this new script
  will obtain a key hosted on that site and import it when supplied
  with the keybase username.

Tested-by: Ben McGinnes <[email protected]>
Signed-off-by: Ben McGinnes <[email protected]>

1 files changed, 80 insertions, 0 deletions

diff --git a/lang/python/examples/howto/import-keybasekey.py b/lang/python/examples/howto/import-keybasekey.py
new file mode 100755
index 00000000..32900b70
--- /dev/null
+++ b/lang/python/examples/howto/import-keybasekey.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from __future__ import absolute_import, division, unicode_literals
+
+import gpg
+import requests
+import sys
+
+# Copyright (C) 2018 Ben McGinnes <[email protected]>
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License and the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License and the GNU
+# Lesser General Public along with this program; if not, see
+# <https://www.gnu.org/licenses/>.
+
+print("""
+This script imports one or more public keys from keybase.io with the username
+of a keybase.io user.
+
+Multiple usernames may be provided, separated by spaces.
+""")
+
+c = gpg.Context()
+# https://keybase.io/<user>/pgp_keys.asc
+results = []
+
+if len(sys.argv) >= 2:
+    keys = sys.argv[1:]
+else:
+    keys = input("Enter the username(s) to get keys for: ")
+
+for key in keys:
+    r = requests.get("https://keybase.io/{0}/pgp_keys.asc".format(key))
+    import_result = c.key_import(r.content)
+    results.append(import_result)
+
+for result in results:
+    if result is not None and hasattr(result, "considered") is False:
+        print(result)
+    elif result is not None and hasattr(result, "considered") is True:
+        num_keys = len(result.imports)
+        new_revs = result.new_revocations
+        new_sigs = result.new_signatures
+        new_subs = result.new_sub_keys
+        new_uids = result.new_user_ids
+        new_scrt = result.secret_imported
+        nochange = result.unchanged
+        print("""
+The total number of keys considered for import was:  {0}
+
+   Number of keys revoked:  {1}
+ Number of new signatures:  {2}
+    Number of new subkeys:  {3}
+   Number of new user IDs:  {4}
+Number of new secret keys:  {5}
+ Number of unchanged keys:  {6}
+
+The key IDs for all considered keys were:
+""".format(num_keys, new_revs, new_sigs, new_subs, new_uids, new_scrt,
+           nochange))
+        for i in range(num_keys):
+            print(result.imports[i].fpr)
+        print("")
+    else:
+        print("No keys were imported or found.")