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sshd: Warn about missing ssh-keygen only when necessary

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The sshd service is using ssh-keygen to generate missing SSH keys.
If ssh-keygen is missing, it prints the following message:

> /etc/rc.d/sshd: WARNING: /usr/bin/ssh-keygen does not exist.

It makes sense when the key is not generated yet and
cannot be created because ssh-keygen is missing.

The problem is that even if the key is present on the host,
the sshd service would still warn about missing ssh-keygen
(even though it does not need it).

Reviewed by:	emaste
Approved by:	emaste (src)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D23911
This commit is contained in:
Mateusz Piotrowski 2020-04-15 14:07:33 +00:00
parent e3637e41e3
commit 3e58608634
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=359973
1 changed files with 8 additions and 7 deletions
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15
libexec/rc/rc.d/sshd
View file

@ -45,18 +45,19 @@ sshd_keygen_alg()
;;
esac
if [ -f "${keyfile}" ] ; then
info "$ALG host key exists."
return 0
fi
if [ ! -x /usr/bin/ssh-keygen ] ; then
warn "/usr/bin/ssh-keygen does not exist."
return 1
fi
if [ -f "${keyfile}" ] ; then
info "$ALG host key exists."
else
echo "Generating $ALG host key."
/usr/bin/ssh-keygen -q -t $alg -f "$keyfile" -N ""
/usr/bin/ssh-keygen -l -f "$keyfile.pub"
fi
echo "Generating $ALG host key."
/usr/bin/ssh-keygen -q -t $alg -f "$keyfile" -N ""
/usr/bin/ssh-keygen -l -f "$keyfile.pub"
}
sshd_keygen()