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regress test for AuthorizedKeysCommand arguments

Upstream-Regress-ID: bbd65c13c6b3be9a442ec115800bff9625898f12
This commit is contained in:
djm@openbsd.org 2015-05-21 06:40:02 +00:00 committed by Damien Miller
parent bcc50d8161
commit 84452c5d03
1 changed files with 48 additions and 11 deletions
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59
regress/keys-command.sh
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@ -1,4 +1,4 @@
# $OpenBSD: keys-command.sh,v 1.2 2012/12/06 06:06:54 dtucker Exp $
# $OpenBSD: keys-command.sh,v 1.3 2015/05/21 06:40:02 djm Exp $
# Placed in the Public Domain.
tid="authorized keys from command"
@ -9,26 +9,63 @@ if test -z "$SUDO" ; then
exit 0
fi
rm -f $OBJ/keys-command-args
touch $OBJ/keys-command-args
chmod a+rw $OBJ/keys-command-args
expected_key_text=`awk '{ print $2 }' < $OBJ/rsa.pub`
expected_key_fp=`$SSHKEYGEN -lf $OBJ/rsa.pub | awk '{ print $2 }'`
# Establish a AuthorizedKeysCommand in /var/run where it will have
# acceptable directory permissions.
KEY_COMMAND="/var/run/keycommand_${LOGNAME}"
cat << _EOF | $SUDO sh -c "cat > '$KEY_COMMAND'"
cat << _EOF | $SUDO sh -c "rm -f '$KEY_COMMAND' ; cat > '$KEY_COMMAND'"
#!/bin/sh
echo args: "\$@" >> $OBJ/keys-command-args
echo "$PATH" | grep -q mekmitasdigoat && exit 7
test "x\$1" != "x${LOGNAME}" && exit 1
if test $# -eq 6 ; then
test "x\$2" != "xblah" && exit 2
test "x\$3" != "x${expected_key_text}" && exit 3
test "x\$4" != "xssh-rsa" && exit 4
test "x\$5" != "x${expected_key_fp}" && exit 5
test "x\$6" != "xblah" && exit 6
fi
exec cat "$OBJ/authorized_keys_${LOGNAME}"
_EOF
$SUDO chmod 0755 "$KEY_COMMAND"
cp $OBJ/sshd_proxy $OBJ/sshd_proxy.bak
(
grep -vi AuthorizedKeysFile $OBJ/sshd_proxy.bak
echo AuthorizedKeysFile none
echo AuthorizedKeysCommand $KEY_COMMAND
echo AuthorizedKeysCommandUser ${LOGNAME}
) > $OBJ/sshd_proxy
if [ -x $KEY_COMMAND ]; then
${SSH} -F $OBJ/ssh_proxy somehost true
cp $OBJ/sshd_proxy $OBJ/sshd_proxy.bak
verbose "AuthorizedKeysCommand with arguments"
(
grep -vi AuthorizedKeysFile $OBJ/sshd_proxy.bak
echo AuthorizedKeysFile none
echo AuthorizedKeysCommand $KEY_COMMAND %u blah %k %t %f blah
echo AuthorizedKeysCommandUser ${LOGNAME}
) > $OBJ/sshd_proxy
# Ensure that $PATH is sanitised in sshd
env PATH=$PATH:/sbin/mekmitasdigoat \
${SSH} -F $OBJ/ssh_proxy somehost true
if [ $? -ne 0 ]; then
fail "connect failed"
fi
verbose "AuthorizedKeysCommand without arguments"
# Check legacy behavior of no-args resulting in username being passed.
(
grep -vi AuthorizedKeysFile $OBJ/sshd_proxy.bak
echo AuthorizedKeysFile none
echo AuthorizedKeysCommand $KEY_COMMAND
echo AuthorizedKeysCommandUser ${LOGNAME}
) > $OBJ/sshd_proxy
# Ensure that $PATH is sanitised in sshd
env PATH=$PATH:/sbin/mekmitasdigoat \
${SSH} -F $OBJ/ssh_proxy somehost true
if [ $? -ne 0 ]; then
fail "connect failed"
fi