rc: let opnsense-version -c check package file existence

src/man/man8/opnsense-version.8

@@ -1,5 +1,5 @@
 .\"
-.\" Copyright (c) 2018 Franco Fichtner <franco@opnsense.org>
+.\" Copyright (c) 2018-2021 Franco Fichtner <franco@opnsense.org>
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
@@ -24,7 +24,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd December 11, 2018
+.Dd February 5, 2021
 .Dt OPNSENSE-VERSION 8
 .Os
 .Sh NAME
@@ -34,6 +34,9 @@
 .Nm
 .Op Fl AaefHNnsvw
 .Op Ar package
+.Nm
+.Fl c
+.Op Ar package
 .Sh DESCRIPTION
 The
 .Nm
@@ -64,6 +67,9 @@ The options are as follows:
 Return the system architecture string.
 .It Fl a
 Return the firmware ABI string.
+.It Fl c
+Exit successfully if the package exists.
+Otherwise, exit with an error.
 .It Fl e
 Return the product contact e-mail address.
 .It Fl f

src/opnsense/scripts/firmware/plugin.sh

@@ -29,7 +29,7 @@ PLUGIN=${1}
 RETURN="0"
 
 # Return "1" if the plugin is installed (stable or development).
-if [ -f "/usr/local/opnsense/version/${PLUGIN}" ]; then
+if opnsense-version -c "${PLUGIN}"; then
 	RETURN="1"
 fi
 

src/sbin/opnsense-version

@@ -30,7 +30,9 @@ PKG="/usr/local/sbin/pkg-static"
 TARGET="core"
 OUTPUT=
 
-while getopts AaefHNnsvw OPT; do
+DO_CHECK=
+
+while getopts AacefHNnsvw OPT; do
 	case ${OPT} in
 	A)
 		OUTPUT="${OUTPUT} \${product_arch}"
@@ -38,6 +40,9 @@ while getopts AaefHNnsvw OPT; do
 	a)
 		OUTPUT="${OUTPUT} \${product_abi}"
 		;;
+	c)
+		DO_CHECK="-c"
+		;;
 	e)
 		OUTPUT="${OUTPUT} \${product_email}"
 		;;
@@ -76,13 +81,21 @@ if [ -n "${1}" ]; then
 	shift
 fi
 
+VERSION="${VERSIONDIR}/${TARGET}"
+
+if [ -n "${DO_CHECK}" ]; then
+        RET=0
+	if [ ! -f ${VERSION} ]; then
+		RET=1
+	fi
+	exit ${RET}
+fi
+
 if [ -n "${*}" ]; then
 	echo "Additional arguments are not supported" >&2
 	exit 1
 fi
 
-VERSION="${VERSIONDIR}/${TARGET}"
-
 if [ ! -f ${VERSION} ]; then
 	echo "Missing ${VERSION}" >&2
 	exit 1