app-admin/cancd: modernize the service script and ebuild.

This commit creates a new revision (-r4) that replaces the earlier
unstable -r3. The ebuild itself includes an update to EAPI=6 and the
associated simplifications, as well as the addition of a new user
named "cancd" that is used by the init script.

The service script was completely rewritten and simplified, and now
uses more modern features of OpenRC. The original motivation for
that was bug 603208.

This is a non-maintainer commit, but robbat2 (the maintainer on file)
recently made a post to gentoo-dev, "Packages up for grabs: robbat2
edition," stating that this package was up for grabs.

Closes: https://bugs.gentoo.org/603208
Package-Manager: Portage-2.3.13, Repoman-2.3.3

app-admin/cancd/cancd-0.1.0-r4.ebuild

@@ -1,11 +1,11 @@
 # Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=5
+EAPI=6
 
-inherit eutils
+inherit user
 
-DESCRIPTION="the CA NetConsole Daemon receives output from the Linux netconsole driver"
+DESCRIPTION="CA NetConsole Daemon receives output from the Linux netconsole driver"
 HOMEPAGE="http://oss.oracle.com/projects/cancd/"
 SRC_URI="http://oss.oracle.com/projects/cancd/dist/files/source/${P}.tar.gz"
 
@@ -14,9 +14,14 @@ SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE=""
 
+PATCHES=(
+	"${FILESDIR}/${P}-build-r1.patch"
+	"${FILESDIR}/${P}-c-cleanup.patch"
+)
+
 src_prepare() {
-	epatch "${FILESDIR}"/${P}-build.patch #246734
-	epatch "${FILESDIR}"/${P}-c-cleanup.patch
+	default
+
 	# slight makefile cleanup
 	sed -i \
 		-e '/^CFLAGS/s,-g,,' \
@@ -27,11 +32,12 @@ src_prepare() {
 
 src_install() {
 	dosbin cancd
-	newinitd "${FILESDIR}"/cancd-init.d cancd
-	newconfd "${FILESDIR}"/cancd-conf.d cancd
+	newinitd "${FILESDIR}"/cancd-init.d-r1 cancd
+	newconfd "${FILESDIR}"/cancd-conf.d-r1 cancd
 	newinitd "${FILESDIR}"/netconsole-init.d netconsole
 	newconfd "${FILESDIR}"/netconsole-conf.d netconsole
-	keepdir /var/crash
-	fowners adm:nobody /var/crash
-	fperms 700 /var/crash
+}
+
+pkg_preinst() {
+	enewuser cancd
 }

app-admin/cancd/files/cancd-0.1.0-build-r1.patch

@@ -2,8 +2,8 @@ fix building with newer glibc
 
 http://bugs.gentoo.org/246734
 
---- cancd.c
-+++ cancd.c
+--- a/cancd.c
++++ b/cancd.c
 @@ -36,6 +36,7 @@
  #include <libgen.h>
  #include <getopt.h>

app-admin/cancd/files/cancd-conf.d

@@ -1,19 +0,0 @@
-#!/sbin/openrc-run
-# Copyright 1999-2005 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-
-# user to run as, root strongly discouraged
-# user should have /bin/false for a shell
-# but file access into /var
-CHUID='adm:nobody'
-
-# port to listen on
-CANCD_PORT=6667
-
-# directory to output to
-CRASH_DIR=/var/crash
-
-# one file per minute, one dir per host/date
-#CRASH_FORMAT="%Q/%Y-%m-%d/%H:%M.log"
-# one file per day, one dir per host
-CRASH_FORMAT="%Q/%Y-%m-%d.log"

app-admin/cancd/files/cancd-conf.d-r1

@@ -0,0 +1,14 @@
+#!/sbin/openrc-run
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# port to listen on
+CANCD_PORT=6667
+
+# directory to output to
+CANCD_LOG_DIR=/var/log/cancd
+
+# one file per minute, one dir per host/date
+#CANCD_LOG_FORMAT="%Q/%Y-%m-%d/%H:%M.log"
+# one file per day, one dir per host
+CANCD_LOG_FORMAT="%Q/%Y-%m-%d.log"

app-admin/cancd/files/cancd-init.d

@@ -1,22 +0,0 @@
-#!/sbin/openrc-run
-# Copyright 1999-2011 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-
-depend() {
-	need net
-}
-
-start() {
-	mkdir -p ${CRASH_DIR}
-	chown ${CHUID} ${CRASH_DIR}
-	chmod 700 ${CRASH_DIR}
-	ebegin "Starting cancd"
-	start-stop-daemon --start --quiet --user ${CHUID} --exec /usr/sbin/cancd  -- -p ${CANCD_PORT} -l "${CRASH_DIR}" -o "${CRASH_FORMAT}"
-	eend ${?}
-}
-
-stop() {
-	ebegin "Stopping cancd"
-	start-stop-daemon --stop --quiet --exec /usr/sbin/cancd
-	eend ${?}
-}

app-admin/cancd/files/cancd-init.d-r1

@@ -0,0 +1,22 @@
+#!/sbin/openrc-run
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+command="/usr/sbin/cancd"
+command_args="-p ${CANCD_PORT}
+              -l ${CANCD_LOG_DIR}
+              -o ${CANCD_LOG_FORMAT}"
+command_user="cancd"
+
+# cancd daemonizes itself, but doesn't write a PID file and doesn't
+# have an option to run in the foreground. So the best we can do
+# is try to match the process name when stopping it.
+procname="cancd"
+
+depend() {
+    need net
+}
+
+start_pre() {
+    checkpath --directory --owner cancd --mode 0700 "${CANCD_LOG_DIR}"
+}