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67 lines
2.1 KiB
Bash
67 lines
2.1 KiB
Bash
# $OpenBSD: hostbased.sh,v 1.4 2022/12/07 11:45:43 dtucker Exp $
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# Placed in the Public Domain.
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# This test requires external setup and thus is skipped unless
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# TEST_SSH_HOSTBASED_AUTH and SUDO are set to "yes".
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# Since ssh-keysign has key paths hard coded, unlike the other tests it
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# needs to use the real host keys. It requires:
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# - ssh-keysign must be installed and setuid.
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# - "EnableSSHKeysign yes" must be in the system ssh_config.
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# - the system's own real FQDN the system-wide shosts.equiv.
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# - the system's real public key fingerprints must be in global ssh_known_hosts.
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#
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tid="hostbased"
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if [ -z "${TEST_SSH_HOSTBASED_AUTH}" ]; then
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skip "TEST_SSH_HOSTBASED_AUTH not set."
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elif [ -z "${SUDO}" ]; then
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skip "SUDO not set"
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fi
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# Enable all supported hostkey algos (but no others)
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hostkeyalgos=`${SSH} -Q HostKeyAlgorithms | tr '\n' , | sed 's/,$//'`
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cat >>$OBJ/sshd_proxy <<EOD
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HostbasedAuthentication yes
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HostbasedAcceptedAlgorithms $hostkeyalgos
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HostbasedUsesNameFromPacketOnly yes
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HostKeyAlgorithms $hostkeyalgos
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EOD
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cat >>$OBJ/ssh_proxy <<EOD
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HostbasedAuthentication yes
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HostKeyAlgorithms $hostkeyalgos
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HostbasedAcceptedAlgorithms $hostkeyalgos
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PreferredAuthentications hostbased
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EOD
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algos=""
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for key in `${SUDO} ${SSHD} -T | awk '$1=="hostkey"{print $2}'`; do
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case "`$SSHKEYGEN -l -f ${key}.pub`" in
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256*ECDSA*) algos="$algos ecdsa-sha2-nistp256" ;;
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384*ECDSA*) algos="$algos ecdsa-sha2-nistp384" ;;
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521*ECDSA*) algos="$algos ecdsa-sha2-nistp521" ;;
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*RSA*) algos="$algos ssh-rsa rsa-sha2-256 rsa-sha2-512" ;;
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*ED25519*) algos="$algos ssh-ed25519" ;;
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*DSA*) algos="$algos ssh-dss" ;;
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*) verbose "unknown host key type $key" ;;
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esac
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done
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for algo in $algos; do
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trace "hostbased algo $algo"
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opts="-F $OBJ/ssh_proxy"
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if [ "x$algo" != "xdefault" ]; then
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opts="$opts -oHostbasedAcceptedAlgorithms=$algo"
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fi
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SSH_CONNECTION=`${SSH} $opts localhost 'echo $SSH_CONNECTION'`
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if [ $? -ne 0 ]; then
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fail "connect failed, hostbased algo $algo"
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elif [ "$SSH_CONNECTION" != "UNKNOWN 65535 UNKNOWN 65535" ]; then
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fail "hostbased algo $algo bad SSH_CONNECTION" \
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"$SSH_CONNECTION"
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else
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verbose "ok hostbased algo $algo"
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fi
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done
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