###################################################################
#
#       This script is a part of the pam_script_ses_open script
#       and is not stand-alone!
#
#       It will try to mount the home directories of students
#       under /home/<user>/PERSISTENT using kerberos.
#

# Only run this if the user is a student
# These have a gid > 1000
if ! grep -q "^${PAM_USER}:" "/etc/passwd"; then

    VOLUME=$(getent passwd ${PAM_USER} |cut -d ':' -f6)
	FILESERVER="urquell"

	# now we can mount the home directory!

	MOUNT_OPTS="-t nfs4 -o rw,nosuid,nodev,nolock,intr,hard,sloppy,sec=krb5p"

	SIGNAL=$(mktemp)
	MOUNT_OUTPUT=$(mktemp)
	rm -f -- "${SIGNAL}"
	( mount ${MOUNT_OPTS} "${FILESERVER}:${VOLUME}" "${PERSISTENT_HOME_DIR}" > "$MOUNT_OUTPUT" 2>&1 || touch "${SIGNAL}" ) &
	MOUNT_PID=$!
	for COUNTER in 1 2 4 4; do
		kill -0 "${MOUNT_PID}" 2>/dev/null || break
		sleep "${COUNTER}"
	done

	if [ -e "${SIGNAL}" ]; then
	     slxlog "pam-curitiba" "Mount of '${FILESERVER}:${VOLUME}' to '${PERSISTENT_HOME_DIR}' failed. (Args: ${MOUNT_OPTS})" "$MOUNT_OUTPUT"
		rm -f -- "${SIGNAL}"
	elif kill -9 "${MOUNT_PID}" 2>/dev/null; then
		slxlog "pam-curitiba" "Mount of '${FILESERVER}:${VOLUME}' to '${PERSISTENT_HOME_DIR}' timed out. (Args: ${MOUNT_OPTS})" "$MOUNT_OUTPUT"
	else
		PERSISTENT_OK=yes
	fi
	( sleep 2; rm -f -- "$MOUNT_OUTPUT" ) &

fi