4f52dfbb8d
This completely removes client-side support for the SSH 1 protocol, which was already disabled in 12 but is still enabled in 11. For that reason, we will not be able to merge 7.6p1 or newer back to 11.
54 lines
1.6 KiB
Bash
Executable File
54 lines
1.6 KiB
Bash
Executable File
# $OpenBSD: hostkey-agent.sh,v 1.7 2017/04/30 23:34:55 djm Exp $
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# Placed in the Public Domain.
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tid="hostkey agent"
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rm -f $OBJ/agent-key.* $OBJ/ssh_proxy.orig $OBJ/known_hosts.orig
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trace "start agent"
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eval `${SSHAGENT} -s` > /dev/null
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r=$?
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[ $r -ne 0 ] && fatal "could not start ssh-agent: exit code $r"
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grep -vi 'hostkey' $OBJ/sshd_proxy > $OBJ/sshd_proxy.orig
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echo "HostKeyAgent $SSH_AUTH_SOCK" >> $OBJ/sshd_proxy.orig
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trace "load hostkeys"
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for k in `${SSH} -Q key-plain` ; do
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${SSHKEYGEN} -qt $k -f $OBJ/agent-key.$k -N '' || fatal "ssh-keygen $k"
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(
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printf 'localhost-with-alias,127.0.0.1,::1 '
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cat $OBJ/agent-key.$k.pub
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) >> $OBJ/known_hosts.orig
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${SSHADD} $OBJ/agent-key.$k >/dev/null 2>&1 || \
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fatal "couldn't load key $OBJ/agent-key.$k"
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echo "Hostkey $OBJ/agent-key.${k}" >> $OBJ/sshd_proxy.orig
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# Remove private key so the server can't use it.
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rm $OBJ/agent-key.$k || fatal "couldn't rm $OBJ/agent-key.$k"
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done
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cp $OBJ/known_hosts.orig $OBJ/known_hosts
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unset SSH_AUTH_SOCK
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for ps in no yes; do
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for k in `${SSH} -Q key-plain` ; do
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verbose "key type $k privsep=$ps"
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cp $OBJ/sshd_proxy.orig $OBJ/sshd_proxy
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echo "UsePrivilegeSeparation $ps" >> $OBJ/sshd_proxy
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echo "HostKeyAlgorithms $k" >> $OBJ/sshd_proxy
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opts="-oHostKeyAlgorithms=$k -F $OBJ/ssh_proxy"
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cp $OBJ/known_hosts.orig $OBJ/known_hosts
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SSH_CONNECTION=`${SSH} $opts host 'echo $SSH_CONNECTION'`
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if [ $? -ne 0 ]; then
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fail "privsep=$ps failed"
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fi
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if [ "$SSH_CONNECTION" != "UNKNOWN 65535 UNKNOWN 65535" ]; then
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fail "bad SSH_CONNECTION key type $k privsep=$ps"
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fi
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done
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done
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trace "kill agent"
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${SSHAGENT} -k > /dev/null
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