From 688f9810fde3947db66ff7e4c0ea21bf9708feec Mon Sep 17 00:00:00 2001 From: Christian Poessinger Date: Tue, 31 Aug 2021 12:20:05 +0200 Subject: ssh: T3789: add custom validator for base64 encoded CLI data SSH keys used for remote login are supplied as base64 encoded data on the CLI. The key is not validated, thus an invalid copy/pasted key will render the login useless. This commit adds a custom and re-usable validator which check if the data is properly base64 encoded. (cherry picked from commit 00efce716912680354d47a2dca9769cd8c5c89ae) --- src/validators/base64 | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100755 src/validators/base64 (limited to 'src/validators/base64') diff --git a/src/validators/base64 b/src/validators/base64 new file mode 100755 index 000000000..e2b1e730d --- /dev/null +++ b/src/validators/base64 @@ -0,0 +1,27 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2021 VyOS maintainers and contributors +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 or later as +# published by the Free Software Foundation. +# +# 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 for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +import base64 +from sys import argv + +if __name__ == '__main__': + if len(argv) != 2: + exit(1) + try: + base64.b64decode(argv[1]) + except: + exit(1) + exit(0) -- cgit v1.2.3