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Remove use of && in fetch-ssh-keys service.

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Scripts are run with -e so will abort when a command fails.
This commit is contained in:
Russell O'Connor 2015-04-28 21:28:16 +00:00
parent 4744e3541a
commit 29b7d76ec8
1 changed files with 31 additions and 29 deletions
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60
nixos/modules/virtualisation/google-compute-image.nix
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@ -143,42 +143,44 @@ in
# When dealing with cryptographic keys, we want to keep things private.
umask 077
# Don't download the SSH key if it has already been downloaded
if ! [ -e /root/.ssh/authorized_keys ]; then
if ! [ -s /root/.ssh/authorized_keys ]; then
echo "obtaining SSH key..."
mkdir -m 0700 -p /root/.ssh
AUTH_KEYS=$(${mktemp}) && {
${wget} -O $AUTH_KEYS http://metadata.google.internal/0.1/meta-data/authorized-keys
if [ $? -eq 0 -a -e $AUTH_KEYS ]; then
KEY_PUB=$(${mktemp}) && {
cat $AUTH_KEYS | cut -d: -f2- > $KEY_PUB
if ! grep -q -f $KEY_PUB /root/.ssh/authorized_keys; then
cat $KEY_PUB >> /root/.ssh/authorized_keys
echo "new key added to authorized_keys"
fi
chmod 600 /root/.ssh/authorized_keys
rm -f $KEY_PUB
}
fi
rm -f $AUTH_KEYS
}
AUTH_KEYS=$(${mktemp})
${wget} -O $AUTH_KEYS http://metadata.google.internal/0.1/meta-data/authorized-keys
if [ -s $AUTH_KEYS ]; then
KEY_PUB=$(${mktemp})
cat $AUTH_KEYS | cut -d: -f2- > $KEY_PUB
if ! grep -q -f $KEY_PUB /root/.ssh/authorized_keys; then
cat $KEY_PUB >> /root/.ssh/authorized_keys
echo "New key added to authorized_keys."
fi
chmod 600 /root/.ssh/authorized_keys
rm -f $KEY_PUB
else
echo "Downloading http://metadata.google.internal/0.1/meta-data/authorized-keys failed."
false
fi
rm -f $AUTH_KEYS
fi
countKeys=0
${flip concatMapStrings config.services.openssh.hostKeys (k :
let kName = baseNameOf k.path; in ''
PRIV_KEY=$(${mktemp}) && {
echo "trying to obtain SSH private host key ${kName}"
${wget} -O $PRIV_KEY http://metadata.google.internal/0.1/meta-data/attributes/${kName} && :
if [ $? -eq 0 -a -e $PRIV_KEY ]; then
countKeys=$((countKeys+1))
mv -f $PRIV_KEY ${k.path}
echo "downloaded ${k.path}"
chmod 600 ${k.path}
${config.programs.ssh.package}/bin/ssh-keygen -y -f ${k.path} > ${k.path}.pub
chmod 644 ${k.path}.pub
fi
rm -f $PRIV_KEY
}
PRIV_KEY=$(${mktemp})
echo "trying to obtain SSH private host key ${kName}"
${wget} -O $PRIV_KEY http://metadata.google.internal/0.1/meta-data/attributes/${kName} && :
if [ $? -eq 0 -a -s $PRIV_KEY ]; then
countKeys=$((countKeys+1))
mv -f $PRIV_KEY ${k.path}
echo "Downloaded ${k.path}"
chmod 600 ${k.path}
${config.programs.ssh.package}/bin/ssh-keygen -y -f ${k.path} > ${k.path}.pub
chmod 644 ${k.path}.pub
else
echo "Downloading http://metadata.google.internal/0.1/meta-data/attributes/${kName} failed."
fi
rm -f $PRIV_KEY
''
)}