diff options
Diffstat (limited to 'regress/principals-command.sh')
| -rw-r--r-- | regress/principals-command.sh | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/regress/principals-command.sh b/regress/principals-command.sh new file mode 100644 index 0000000..5e535c1 --- /dev/null +++ b/regress/principals-command.sh @@ -0,0 +1,174 @@ +# $OpenBSD: principals-command.sh,v 1.11 2019/12/16 02:39:05 djm Exp $ +# Placed in the Public Domain. + +tid="authorized principals command" + +rm -f $OBJ/user_ca_key* $OBJ/cert_user_key* +cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak + +if [ -z "$SUDO" -a ! -w /var/run ]; then + echo "skipped (SUDO not set)" + echo "need SUDO to create file in /var/run, test won't work without" + exit 0 +fi + +case "$SSH_KEYTYPES" in + *ssh-rsa*) userkeytype=rsa ;; + *) userkeytype=ed25519 ;; +esac + +SERIAL=$$ + +# Create a CA key and a user certificate. +${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_ca_key || \ + fatal "ssh-keygen of user_ca_key failed" +${SSHKEYGEN} -q -N '' -t ${userkeytype} -f $OBJ/cert_user_key || \ + fatal "ssh-keygen of cert_user_key failed" +${SSHKEYGEN} -q -s $OBJ/user_ca_key -I "Joanne User" \ + -z $$ -n ${USER},mekmitasdigoat $OBJ/cert_user_key || \ + fatal "couldn't sign cert_user_key" + +CERT_BODY=`cat $OBJ/cert_user_key-cert.pub | awk '{ print $2 }'` +CA_BODY=`cat $OBJ/user_ca_key.pub | awk '{ print $2 }'` +CERT_FP=`${SSHKEYGEN} -lf $OBJ/cert_user_key-cert.pub | awk '{ print $2 }'` +CA_FP=`${SSHKEYGEN} -lf $OBJ/user_ca_key.pub | awk '{ print $2 }'` + +# Establish a AuthorizedPrincipalsCommand in /var/run where it will have +# acceptable directory permissions. +PRINCIPALS_COMMAND="/var/run/principals_command_${LOGNAME}.$$" +trap "$SUDO rm -f ${PRINCIPALS_COMMAND}" 0 +cat << _EOF | $SUDO sh -c "cat > '$PRINCIPALS_COMMAND'" +#!/bin/sh +test "x\$1" != "x${LOGNAME}" && exit 1 +test "x\$2" != "xssh-${userkeytype}-cert-v01@openssh.com" && exit 1 +test "x\$3" != "xssh-ed25519" && exit 1 +test "x\$4" != "xJoanne User" && exit 1 +test "x\$5" != "x${SERIAL}" && exit 1 +test "x\$6" != "x${CA_FP}" && exit 1 +test "x\$7" != "x${CERT_FP}" && exit 1 +test "x\$8" != "x${CERT_BODY}" && exit 1 +test "x\$9" != "x${CA_BODY}" && exit 1 +test -f "$OBJ/authorized_principals_${LOGNAME}" && + exec cat "$OBJ/authorized_principals_${LOGNAME}" +_EOF +test $? -eq 0 || fatal "couldn't prepare principals command" +$SUDO chmod 0755 "$PRINCIPALS_COMMAND" + +if ! $OBJ/check-perm -m keys-command $PRINCIPALS_COMMAND ; then + echo "skipping: $PRINCIPALS_COMMAND is unsuitable as " \ + "AuthorizedPrincipalsCommand" + $SUDO rm -f $PRINCIPALS_COMMAND + exit 0 +fi + +if [ -x $PRINCIPALS_COMMAND ]; then + # Test explicitly-specified principals + for privsep in yes ; do + _prefix="privsep $privsep" + + # Setup for AuthorizedPrincipalsCommand + rm -f $OBJ/authorized_keys_$USER + ( + cat $OBJ/sshd_proxy_bak + echo "UsePrivilegeSeparation $privsep" + echo "AuthorizedKeysFile none" + echo "AuthorizedPrincipalsCommand $PRINCIPALS_COMMAND" \ + "%u %t %T %i %s %F %f %k %K" + echo "AuthorizedPrincipalsCommandUser ${LOGNAME}" + echo "TrustedUserCAKeys $OBJ/user_ca_key.pub" + ) > $OBJ/sshd_proxy + + # XXX test missing command + # XXX test failing command + + # Empty authorized_principals + verbose "$tid: ${_prefix} empty authorized_principals" + echo > $OBJ/authorized_principals_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -eq 0 ]; then + fail "ssh cert connect succeeded unexpectedly" + fi + + # Wrong authorized_principals + verbose "$tid: ${_prefix} wrong authorized_principals" + echo gregorsamsa > $OBJ/authorized_principals_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -eq 0 ]; then + fail "ssh cert connect succeeded unexpectedly" + fi + + # Correct authorized_principals + verbose "$tid: ${_prefix} correct authorized_principals" + echo mekmitasdigoat > $OBJ/authorized_principals_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -ne 0 ]; then + fail "ssh cert connect failed" + fi + + # authorized_principals with bad key option + verbose "$tid: ${_prefix} authorized_principals bad key opt" + echo 'blah mekmitasdigoat' > $OBJ/authorized_principals_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -eq 0 ]; then + fail "ssh cert connect succeeded unexpectedly" + fi + + # authorized_principals with command=false + verbose "$tid: ${_prefix} authorized_principals command=false" + echo 'command="false" mekmitasdigoat' > \ + $OBJ/authorized_principals_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -eq 0 ]; then + fail "ssh cert connect succeeded unexpectedly" + fi + + # authorized_principals with command=true + verbose "$tid: ${_prefix} authorized_principals command=true" + echo 'command="true" mekmitasdigoat' > \ + $OBJ/authorized_principals_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost false >/dev/null 2>&1 + if [ $? -ne 0 ]; then + fail "ssh cert connect failed" + fi + + # Setup for principals= key option + rm -f $OBJ/authorized_principals_$USER + ( + cat $OBJ/sshd_proxy_bak + echo "UsePrivilegeSeparation $privsep" + ) > $OBJ/sshd_proxy + + # Wrong principals list + verbose "$tid: ${_prefix} wrong principals key option" + ( + printf 'cert-authority,principals="gregorsamsa" ' + cat $OBJ/user_ca_key.pub + ) > $OBJ/authorized_keys_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -eq 0 ]; then + fail "ssh cert connect succeeded unexpectedly" + fi + + # Correct principals list + verbose "$tid: ${_prefix} correct principals key option" + ( + printf 'cert-authority,principals="mekmitasdigoat" ' + cat $OBJ/user_ca_key.pub + ) > $OBJ/authorized_keys_$USER + ${SSH} -i $OBJ/cert_user_key \ + -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 + if [ $? -ne 0 ]; then + fail "ssh cert connect failed" + fi + done +else + echo "SKIPPED: $PRINCIPALS_COMMAND not executable " \ + "(/var/run mounted noexec?)" +fi |