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From b84a1e6d246bbb758f0530038612bd18eff71767 Mon Sep 17 00:00:00 2001
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From: Eduardo Otubo <otubo@redhat.com>
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Date: Tue, 8 Dec 2020 13:27:22 +0100
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Subject: [PATCH 4/4] ssh_util: handle non-default AuthorizedKeysFile config
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 (#586)
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RH-Author: Eduardo Terrell Ferrari Otubo (eterrell)
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RH-MergeRequest: 28: ssh_util: handle non-default AuthorizedKeysFile config (#586)
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RH-Commit: [1/1] f7ce396e3002c53a3504e653b58810efb956aa26 (eterrell/cloud-init)
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RH-Bugzilla: 1862967
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commit b0e73814db4027dba0b7dc0282e295b7f653325c
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Author: Eduardo Otubo <otubo@redhat.com>
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Date:   Tue Oct 20 18:04:59 2020 +0200
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    ssh_util: handle non-default AuthorizedKeysFile config (#586)
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    The following commit merged all ssh keys into a default user file
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    `~/.ssh/authorized_keys` in sshd_config had multiple files configured for
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    AuthorizedKeysFile:
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    commit f1094b1a539044c0193165a41501480de0f8df14
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    Author: Eduardo Otubo <otubo@redhat.com>
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    Date:   Thu Dec 5 17:37:35 2019 +0100
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        Multiple file fix for AuthorizedKeysFile config (#60)
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    This commit ignored the case when sshd_config would have a single file for
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    AuthorizedKeysFile, but a non default configuration, for example
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    `~/.ssh/authorized_keys_foobar`. In this case cloud-init would grab all keys
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    from this file and write a new one, the default `~/.ssh/authorized_keys`
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    causing the bug.
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    rhbz: #1862967
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    Signed-off-by: Eduardo Otubo <otubo@redhat.com>
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Signed-off-by: Eduardo Otubo <otubo@redhat.com>
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---
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 cloudinit/ssh_util.py           | 6 +++---
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 tests/unittests/test_sshutil.py | 6 +++---
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 2 files changed, 6 insertions(+), 6 deletions(-)
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diff --git a/cloudinit/ssh_util.py b/cloudinit/ssh_util.py
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index c08042d6..d5113996 100644
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--- a/cloudinit/ssh_util.py
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+++ b/cloudinit/ssh_util.py
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@@ -262,13 +262,13 @@ def extract_authorized_keys(username, sshd_cfg_file=DEF_SSHD_CFG):
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         except (IOError, OSError):
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             # Give up and use a default key filename
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-            auth_key_fns[0] = default_authorizedkeys_file
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+            auth_key_fns.append(default_authorizedkeys_file)
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             util.logexc(LOG, "Failed extracting 'AuthorizedKeysFile' in SSH "
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                         "config from %r, using 'AuthorizedKeysFile' file "
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                         "%r instead", DEF_SSHD_CFG, auth_key_fns[0])
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-    # always store all the keys in the user's private file
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-    return (default_authorizedkeys_file, parse_authorized_keys(auth_key_fns))
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+    # always store all the keys in the first file configured on sshd_config
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+    return (auth_key_fns[0], parse_authorized_keys(auth_key_fns))
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 def setup_user_keys(keys, username, options=None):
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diff --git a/tests/unittests/test_sshutil.py b/tests/unittests/test_sshutil.py
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index fd1d1bac..88a111e3 100644
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--- a/tests/unittests/test_sshutil.py
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+++ b/tests/unittests/test_sshutil.py
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@@ -593,7 +593,7 @@ class TestMultipleSshAuthorizedKeysFile(test_helpers.CiTestCase):
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             fpw.pw_name, sshd_config)
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         content = ssh_util.update_authorized_keys(auth_key_entries, [])
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-        self.assertEqual("%s/.ssh/authorized_keys" % fpw.pw_dir, auth_key_fn)
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+        self.assertEqual(authorized_keys, auth_key_fn)
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         self.assertTrue(VALID_CONTENT['rsa'] in content)
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         self.assertTrue(VALID_CONTENT['dsa'] in content)
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@@ -610,7 +610,7 @@ class TestMultipleSshAuthorizedKeysFile(test_helpers.CiTestCase):
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         sshd_config = self.tmp_path('sshd_config')
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         util.write_file(
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             sshd_config,
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-            "AuthorizedKeysFile %s %s" % (authorized_keys, user_keys)
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+            "AuthorizedKeysFile %s %s" % (user_keys, authorized_keys)
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         )
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         (auth_key_fn, auth_key_entries) = ssh_util.extract_authorized_keys(
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@@ -618,7 +618,7 @@ class TestMultipleSshAuthorizedKeysFile(test_helpers.CiTestCase):
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         )
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         content = ssh_util.update_authorized_keys(auth_key_entries, [])
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-        self.assertEqual("%s/.ssh/authorized_keys" % fpw.pw_dir, auth_key_fn)
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+        self.assertEqual(user_keys, auth_key_fn)
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         self.assertTrue(VALID_CONTENT['rsa'] in content)
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         self.assertTrue(VALID_CONTENT['dsa'] in content)
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-- 
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2.18.4
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