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community.general/test/integration/targets/known_hosts/files/existing_known_hosts
Marius Gedminas 2efb692cc4 known_hosts: support --diff ()
* known_hosts: support --diff

* known_hosts: support --diff also without --check

* Add unit tests and fix incorrect diff in one corner case

Tests are good!

* Refactor for readability

* Python 3 compat

* More Python 3 compat

* Add an integration test for known_hosts

* Handle ssh-keygen -HF returning non-zero exit code

AFAICT this is a bug in ssh-keygen in some newer OpenSSH versions
(>= 6.4 probably; see commit dd9d5cc670):
when you invoke ssh-keygen with -H and -F <host> options, it always
returns exit code 1.  This is because in ssh-keygen.c there's a function
do_known_hosts() which calls

  exit (find_host && !ctx.found_key);

at the end, and find_host is 1 (because we passed -F on the command line),
but ctx.found_key is always 0.  Why is found_key always 0?  Because the
callback passed to hostkeys_foreach(), which is known_hosts_hash(),
never bothers to set found_key to 1.

* This test does not need root

* Avoid ssh-ed25519 keys in sample known_hosts file

Older versions of OpenSSH do not like them and ssh-keygen -HF
aborts with an error when it sees such keys:

  line 5 invalid key: example.net...
  /root/ansible_testing/known_hosts is not a valid known_hosts file.

* Fix Python 3 errors

Specifically, the default mode of tempfile.NamedTemporaryFile is 'w+b',
which means Python 3 wants us to write bytes objects to it -- but the
keys we have are all unicode strings.
2017-02-08 09:56:03 -05:00

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example.com ssh-dss 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 root@freezer
|1|d71/U7CbOH3Su+d2zxlbmiNfXtI=|g2YSPAVoK7bmg16FCOOPKTZe2BM= ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
|1|L0TqxOhAVh6mLZ2lbHdTv3owun0=|vn0La5pbHNxin3XzQQdvaOulvVU= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCNLCAA/SjVF3jkmlAlkgh+GtZdgxtusHaK66fcA7XSgCpQOdri1dGmND6pQDGwsxiKMy4Ou1GB2DR4N0G9T5E8=
|1|WPo7yAOdlQKLSuRatNJCmDoga0k=|D/QybGglKokWuEQUe9Okpy5uSh0= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCNLCAA/SjVF3jkmlAlkgh+GtZdgxtusHaK66fcA7XSgCpQOdri1dGmND6pQDGwsxiKMy4Ou1GB2DR4N0G9T5E8=
# example.net ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM6OSqweGdPdQ/metQaf738AdN3P+itYp1AypOTgXkyj root@localhost