56 lines
1.6 KiB
Bash
56 lines
1.6 KiB
Bash
# $OpenBSD: knownhosts-command.sh,v 1.3 2021/08/30 01:15:45 djm Exp $
|
|
# Placed in the Public Domain.
|
|
|
|
tid="known hosts command "
|
|
|
|
rm -f $OBJ/knownhosts_command $OBJ/ssh_proxy_khc
|
|
cp $OBJ/ssh_proxy $OBJ/ssh_proxy_orig
|
|
|
|
( grep -vi GlobalKnownHostsFile $OBJ/ssh_proxy_orig | \
|
|
grep -vi UserKnownHostsFile;
|
|
echo "GlobalKnownHostsFile none" ;
|
|
echo "UserKnownHostsFile none" ;
|
|
echo "KnownHostsCommand $OBJ/knownhosts_command '%t' '%K' '%u'" ;
|
|
) > $OBJ/ssh_proxy
|
|
|
|
verbose "simple connection"
|
|
cat > $OBJ/knownhosts_command << _EOF
|
|
#!/bin/sh
|
|
cat $OBJ/known_hosts
|
|
_EOF
|
|
chmod a+x $OBJ/knownhosts_command
|
|
${SSH} -F $OBJ/ssh_proxy x true || fail "ssh connect failed"
|
|
|
|
verbose "no keys"
|
|
cat > $OBJ/knownhosts_command << _EOF
|
|
#!/bin/sh
|
|
exit 0
|
|
_EOF
|
|
chmod a+x $OBJ/knownhosts_command
|
|
${SSH} -F $OBJ/ssh_proxy x true && fail "ssh connect succeeded with no keys"
|
|
|
|
verbose "bad exit status"
|
|
cat > $OBJ/knownhosts_command << _EOF
|
|
#!/bin/sh
|
|
cat $OBJ/known_hosts
|
|
exit 1
|
|
_EOF
|
|
chmod a+x $OBJ/knownhosts_command
|
|
${SSH} -F $OBJ/ssh_proxy x true && fail "ssh connect succeeded with bad exit"
|
|
|
|
for keytype in ${SSH_HOSTKEY_TYPES} ; do
|
|
algs=$keytype
|
|
test "x$keytype" = "xssh-dss" && continue
|
|
test "x$keytype" = "xssh-rsa" && algs=ssh-rsa,rsa-sha2-256,rsa-sha2-512
|
|
verbose "keytype $keytype"
|
|
cat > $OBJ/knownhosts_command << _EOF
|
|
#!/bin/sh
|
|
die() { echo "\$@" 1>&2 ; exit 1; }
|
|
test "x\$1" = "x$keytype" || die "wrong keytype \$1 (expected $keytype)"
|
|
test "x\$3" = "x$LOGNAME" || die "wrong username \$3 (expected $LOGNAME)"
|
|
grep -- "\$1.*\$2" $OBJ/known_hosts
|
|
_EOF
|
|
${SSH} -F $OBJ/ssh_proxy -oHostKeyAlgorithms=$algs x true ||
|
|
fail "ssh connect failed for keytype $x"
|
|
done
|