build: add `fingerprint' target

Makefile

@@ -24,11 +24,12 @@
 # SUCH DAMAGE.
 
 STEPS=		arm base boot chroot clean compress confirm core distfiles \
-		download dvd info kernel nano plugins ports prefetch print \
+		download dvd fingerprint info kernel nano plugins ports \
-		rebase release rename rewind serial sign skim test update \
+		prefetch print rebase release rename rewind serial sign \
-		upload verify vga vm xtools
+		skim test update upload verify vga vm xtools
 SCRIPTS=	batch hotfix nightly
-.PHONY:		${STEPS}
+
+.PHONY:		${STEPS} ${SCRIPTS}
 
 PAGER?=		less
 

README.md

@@ -370,6 +370,11 @@ out on the system can be printed using:
 
     # make info
 
+Repositories that have signing keys can show the current
+fingerprint using:
+
+    # make fingerprint
+
 Last but not least, in case build variables needs to be inspected,
 they can be printed selectively using:
 

build/common.sh

@@ -256,7 +256,7 @@ export PRODUCT_PLUGIN="os-*${PRODUCT_SUFFIX}"
 
 
 case "${SELF}" in
-confirm|info|print)
+confirm|fingerprint|info|print)
 	;;
 *)
 	if [ -z "${PRINT_ENV_SKIP}" ]; then

build/fingerprint.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+# Copyright (c) 2019 Franco Fichtner <franco@opnsense.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+set -e
+
+SELF=fingerprint
+
+. ./common.sh
+
+${PRODUCT_SIGNCHK}